From be67c25b0a3dcf2eaf91c39e4d8a8cdb1215bbe0 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Tue, 14 Aug 2018 15:39:10 -0700 Subject: Add OrderValidator contract --- .../src/2.0.0/extensions/Forwarder/Forwarder.sol | 51 ++++ .../src/2.0.0/extensions/Forwarder/MixinAssets.sol | 144 +++++++++++ .../extensions/Forwarder/MixinExchangeWrapper.sol | 263 +++++++++++++++++++++ .../extensions/Forwarder/MixinForwarderCore.sol | 213 +++++++++++++++++ .../src/2.0.0/extensions/Forwarder/MixinWeth.sol | 114 +++++++++ .../extensions/Forwarder/interfaces/IAssets.sol | 34 +++ .../extensions/Forwarder/interfaces/IForwarder.sol | 30 +++ .../Forwarder/interfaces/IForwarderCore.sol | 80 +++++++ .../extensions/Forwarder/libs/LibConstants.sol | 62 +++++ .../Forwarder/libs/LibForwarderErrors.sol | 34 +++ .../2.0.0/extensions/Forwarder/mixins/MAssets.sol | 54 +++++ .../Forwarder/mixins/MExchangeWrapper.sol | 87 +++++++ .../2.0.0/extensions/Forwarder/mixins/MWeth.sol | 41 ++++ .../extensions/OrderValidator/OrderValidator.sol | 140 +++++++++++ .../contracts/src/2.0.0/forwarder/Forwarder.sol | 51 ---- .../contracts/src/2.0.0/forwarder/MixinAssets.sol | 144 ----------- .../src/2.0.0/forwarder/MixinExchangeWrapper.sol | 263 --------------------- .../src/2.0.0/forwarder/MixinForwarderCore.sol | 213 ----------------- .../contracts/src/2.0.0/forwarder/MixinWeth.sol | 114 --------- .../src/2.0.0/forwarder/interfaces/IAssets.sol | 34 --- .../src/2.0.0/forwarder/interfaces/IForwarder.sol | 30 --- .../2.0.0/forwarder/interfaces/IForwarderCore.sol | 80 ------- .../src/2.0.0/forwarder/libs/LibConstants.sol | 62 ----- .../2.0.0/forwarder/libs/LibForwarderErrors.sol | 34 --- .../src/2.0.0/forwarder/mixins/MAssets.sol | 54 ----- .../2.0.0/forwarder/mixins/MExchangeWrapper.sol | 87 ------- .../contracts/src/2.0.0/forwarder/mixins/MWeth.sol | 41 ---- 27 files changed, 1347 insertions(+), 1207 deletions(-) create mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/Forwarder.sol create mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/MixinAssets.sol create mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol create mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol create mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/MixinWeth.sol create mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IAssets.sol create mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IForwarder.sol create mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IForwarderCore.sol create mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/libs/LibConstants.sol create mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/libs/LibForwarderErrors.sol create mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MAssets.sol create mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MExchangeWrapper.sol create mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MWeth.sol create mode 100644 packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol delete mode 100644 packages/contracts/src/2.0.0/forwarder/Forwarder.sol delete mode 100644 packages/contracts/src/2.0.0/forwarder/MixinAssets.sol delete mode 100644 packages/contracts/src/2.0.0/forwarder/MixinExchangeWrapper.sol delete mode 100644 packages/contracts/src/2.0.0/forwarder/MixinForwarderCore.sol delete mode 100644 packages/contracts/src/2.0.0/forwarder/MixinWeth.sol delete mode 100644 packages/contracts/src/2.0.0/forwarder/interfaces/IAssets.sol delete mode 100644 packages/contracts/src/2.0.0/forwarder/interfaces/IForwarder.sol delete mode 100644 packages/contracts/src/2.0.0/forwarder/interfaces/IForwarderCore.sol delete mode 100644 packages/contracts/src/2.0.0/forwarder/libs/LibConstants.sol delete mode 100644 packages/contracts/src/2.0.0/forwarder/libs/LibForwarderErrors.sol delete mode 100644 packages/contracts/src/2.0.0/forwarder/mixins/MAssets.sol delete mode 100644 packages/contracts/src/2.0.0/forwarder/mixins/MExchangeWrapper.sol delete mode 100644 packages/contracts/src/2.0.0/forwarder/mixins/MWeth.sol (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/Forwarder.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/Forwarder.sol new file mode 100644 index 000000000..6b17bb29b --- /dev/null +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/Forwarder.sol @@ -0,0 +1,51 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.24; +pragma experimental ABIEncoderV2; + +import "./MixinWeth.sol"; +import "./MixinForwarderCore.sol"; +import "./libs/LibConstants.sol"; +import "./MixinAssets.sol"; +import "./MixinExchangeWrapper.sol"; + + +// solhint-disable no-empty-blocks +contract Forwarder is + LibConstants, + MixinWeth, + MixinAssets, + MixinExchangeWrapper, + MixinForwarderCore +{ + + constructor ( + address _exchange, + bytes memory _zrxAssetData, + bytes memory _wethAssetData + ) + public + LibConstants( + _exchange, + _zrxAssetData, + _wethAssetData + ) + MixinForwarderCore() + {} +} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinAssets.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinAssets.sol new file mode 100644 index 000000000..d6a38aa6e --- /dev/null +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinAssets.sol @@ -0,0 +1,144 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.24; + +import "../../utils/LibBytes/LibBytes.sol"; +import "../../utils/Ownable/Ownable.sol"; +import "../../tokens/ERC20Token/IERC20Token.sol"; +import "../../tokens/ERC721Token/IERC721Token.sol"; +import "./libs/LibConstants.sol"; +import "./mixins/MAssets.sol"; + + +contract MixinAssets is + Ownable, + LibConstants, + MAssets +{ + + using LibBytes for bytes; + + bytes4 constant internal ERC20_TRANSFER_SELECTOR = bytes4(keccak256("transfer(address,uint256)")); + + /// @dev Withdraws assets from this contract. The contract requires a ZRX balance in order to + /// function optimally, and this function allows the ZRX to be withdrawn by owner. It may also be + /// used to withdraw assets that were accidentally sent to this contract. + /// @param assetData Byte array encoded for the respective asset proxy. + /// @param amount Amount of ERC20 token to withdraw. + function withdrawAsset( + bytes assetData, + uint256 amount + ) + external + onlyOwner + { + transferAssetToSender(assetData, amount); + } + + /// @dev Transfers given amount of asset to sender. + /// @param assetData Byte array encoded for the respective asset proxy. + /// @param amount Amount of asset to transfer to sender. + function transferAssetToSender( + bytes memory assetData, + uint256 amount + ) + internal + { + bytes4 proxyId = assetData.readBytes4(0); + + if (proxyId == ERC20_DATA_ID) { + transferERC20Token(assetData, amount); + } else if (proxyId == ERC721_DATA_ID) { + transferERC721Token(assetData, amount); + } else { + revert("UNSUPPORTED_ASSET_PROXY"); + } + } + + /// @dev Decodes ERC20 assetData and transfers given amount to sender. + /// @param assetData Byte array encoded for the respective asset proxy. + /// @param amount Amount of asset to transfer to sender. + function transferERC20Token( + bytes memory assetData, + uint256 amount + ) + internal + { + address token = assetData.readAddress(16); + + // Transfer tokens. + // We do a raw call so we can check the success separate + // from the return data. + bool success = token.call(abi.encodeWithSelector( + ERC20_TRANSFER_SELECTOR, + msg.sender, + amount + )); + require( + success, + "TRANSFER_FAILED" + ); + + // Check return data. + // If there is no return data, we assume the token incorrectly + // does not return a bool. In this case we expect it to revert + // on failure, which was handled above. + // If the token does return data, we require that it is a single + // value that evaluates to true. + assembly { + if returndatasize { + success := 0 + if eq(returndatasize, 32) { + // First 64 bytes of memory are reserved scratch space + returndatacopy(0, 0, 32) + success := mload(0) + } + } + } + require( + success, + "TRANSFER_FAILED" + ); + } + + /// @dev Decodes ERC721 assetData and transfers given amount to sender. + /// @param assetData Byte array encoded for the respective asset proxy. + /// @param amount Amount of asset to transfer to sender. + function transferERC721Token( + bytes memory assetData, + uint256 amount + ) + internal + { + require( + amount == 1, + "INVALID_AMOUNT" + ); + // Decode asset data. + address token = assetData.readAddress(16); + uint256 tokenId = assetData.readUint256(36); + + // Perform transfer. + IERC721Token(token).transferFrom( + address(this), + msg.sender, + tokenId + ); + } +} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol new file mode 100644 index 000000000..218713d3c --- /dev/null +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol @@ -0,0 +1,263 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.24; +pragma experimental ABIEncoderV2; + +import "./libs/LibConstants.sol"; +import "./mixins/MExchangeWrapper.sol"; +import "../../protocol/Exchange/libs/LibAbiEncoder.sol"; +import "../../protocol/Exchange/libs/LibOrder.sol"; +import "../../protocol/Exchange/libs/LibFillResults.sol"; +import "../../protocol/Exchange/libs/LibMath.sol"; + + +contract MixinExchangeWrapper is + LibAbiEncoder, + LibFillResults, + LibMath, + LibConstants, + MExchangeWrapper +{ + + /// @dev Fills the input order. + /// Returns false if the transaction would otherwise revert. + /// @param order Order struct containing order specifications. + /// @param takerAssetFillAmount Desired amount of takerAsset to sell. + /// @param signature Proof that order has been created by maker. + /// @return Amounts filled and fees paid by maker and taker. + function fillOrderNoThrow( + LibOrder.Order memory order, + uint256 takerAssetFillAmount, + bytes memory signature + ) + internal + returns (FillResults memory fillResults) + { + // ABI encode calldata for `fillOrder` + bytes memory fillOrderCalldata = abiEncodeFillOrder( + order, + takerAssetFillAmount, + signature + ); + + address exchange = address(EXCHANGE); + + // Call `fillOrder` and handle any exceptions gracefully + assembly { + let success := call( + gas, // forward all gas, TODO: look into gas consumption of assert/throw + exchange, // call address of Exchange contract + 0, // transfer 0 wei + add(fillOrderCalldata, 32), // pointer to start of input (skip array length in first 32 bytes) + mload(fillOrderCalldata), // length of input + fillOrderCalldata, // write output over input + 128 // output size is 128 bytes + ) + switch success + case 0 { + mstore(fillResults, 0) + mstore(add(fillResults, 32), 0) + mstore(add(fillResults, 64), 0) + mstore(add(fillResults, 96), 0) + } + case 1 { + mstore(fillResults, mload(fillOrderCalldata)) + mstore(add(fillResults, 32), mload(add(fillOrderCalldata, 32))) + mstore(add(fillResults, 64), mload(add(fillOrderCalldata, 64))) + mstore(add(fillResults, 96), mload(add(fillOrderCalldata, 96))) + } + } + return fillResults; + } + + /// @dev Synchronously executes multiple calls of fillOrder until total amount of WETH has been sold by taker. + /// Returns false if the transaction would otherwise revert. + /// @param orders Array of order specifications. + /// @param wethSellAmount Desired amount of WETH to sell. + /// @param signatures Proofs that orders have been signed by makers. + /// @return Amounts filled and fees paid by makers and taker. + function marketSellWeth( + LibOrder.Order[] memory orders, + uint256 wethSellAmount, + bytes[] memory signatures + ) + internal + returns (FillResults memory totalFillResults) + { + bytes memory makerAssetData = orders[0].makerAssetData; + bytes memory wethAssetData = WETH_ASSET_DATA; + + uint256 ordersLength = orders.length; + for (uint256 i = 0; i != ordersLength; i++) { + + // We assume that asset being bought by taker is the same for each order. + // We assume that asset being sold by taker is WETH for each order. + orders[i].makerAssetData = makerAssetData; + orders[i].takerAssetData = wethAssetData; + + // Calculate the remaining amount of WETH to sell + uint256 remainingTakerAssetFillAmount = safeSub(wethSellAmount, totalFillResults.takerAssetFilledAmount); + + // Attempt to sell the remaining amount of WETH + FillResults memory singleFillResults = fillOrderNoThrow( + orders[i], + remainingTakerAssetFillAmount, + signatures[i] + ); + + // Update amounts filled and fees paid by maker and taker + addFillResults(totalFillResults, singleFillResults); + + // Stop execution if the entire amount of takerAsset has been sold + if (totalFillResults.takerAssetFilledAmount >= wethSellAmount) { + break; + } + } + return totalFillResults; + } + + /// @dev Synchronously executes multiple fill orders in a single transaction until total amount is bought by taker. + /// Returns false if the transaction would otherwise revert. + /// The asset being sold by taker must always be WETH. + /// @param orders Array of order specifications. + /// @param makerAssetFillAmount Desired amount of makerAsset to buy. + /// @param signatures Proofs that orders have been signed by makers. + /// @return Amounts filled and fees paid by makers and taker. + function marketBuyExactAmountWithWeth( + LibOrder.Order[] memory orders, + uint256 makerAssetFillAmount, + bytes[] memory signatures + ) + internal + returns (FillResults memory totalFillResults) + { + bytes memory makerAssetData = orders[0].makerAssetData; + bytes memory wethAssetData = WETH_ASSET_DATA; + + uint256 ordersLength = orders.length; + for (uint256 i = 0; i != ordersLength; i++) { + + // We assume that asset being bought by taker is the same for each order. + // We assume that asset being sold by taker is WETH for each order. + orders[i].makerAssetData = makerAssetData; + orders[i].takerAssetData = wethAssetData; + + // Calculate the remaining amount of makerAsset to buy + uint256 remainingMakerAssetFillAmount = safeSub(makerAssetFillAmount, totalFillResults.makerAssetFilledAmount); + + // Convert the remaining amount of makerAsset to buy into remaining amount + // of takerAsset to sell, assuming entire amount can be sold in the current order + uint256 remainingTakerAssetFillAmount = getPartialAmount( + orders[i].takerAssetAmount, + orders[i].makerAssetAmount, + remainingMakerAssetFillAmount + ); + + // Attempt to sell the remaining amount of takerAsset + FillResults memory singleFillResults = fillOrderNoThrow( + orders[i], + remainingTakerAssetFillAmount, + signatures[i] + ); + + // Update amounts filled and fees paid by maker and taker + addFillResults(totalFillResults, singleFillResults); + + // Stop execution if the entire amount of makerAsset has been bought + uint256 makerAssetFilledAmount = totalFillResults.makerAssetFilledAmount; + if (makerAssetFilledAmount >= makerAssetFillAmount) { + break; + } + } + + require( + makerAssetFilledAmount >= makerAssetFillAmount, + "COMPLETE_FILL_FAILED" + ); + return totalFillResults; + } + + /// @dev Buys zrxBuyAmount of ZRX fee tokens, taking into account ZRX fees for each order. This will guarantee + /// that at least zrxBuyAmount of ZRX is purchased (sometimes slightly over due to rounding issues). + /// It is possible that a request to buy 200 ZRX will require purchasing 202 ZRX + /// as 2 ZRX is required to purchase the 200 ZRX fee tokens. This guarantees at least 200 ZRX for future purchases. + /// The asset being sold by taker must always be WETH. + /// @param orders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. + /// @param zrxBuyAmount Desired amount of ZRX to buy. + /// @param signatures Proofs that orders have been created by makers. + /// @return totalFillResults Amounts filled and fees paid by maker and taker. + function marketBuyExactZrxWithWeth( + LibOrder.Order[] memory orders, + uint256 zrxBuyAmount, + bytes[] memory signatures + ) + internal + returns (FillResults memory totalFillResults) + { + // Do nothing if zrxBuyAmount == 0 + if (zrxBuyAmount == 0) { + return totalFillResults; + } + + bytes memory zrxAssetData = ZRX_ASSET_DATA; + bytes memory wethAssetData = WETH_ASSET_DATA; + uint256 zrxPurchased = 0; + + uint256 ordersLength = orders.length; + for (uint256 i = 0; i != ordersLength; i++) { + + // All of these are ZRX/WETH, so we can drop the respective assetData from calldata. + orders[i].makerAssetData = zrxAssetData; + orders[i].takerAssetData = wethAssetData; + + // Calculate the remaining amount of ZRX to buy. + uint256 remainingZrxBuyAmount = safeSub(zrxBuyAmount, zrxPurchased); + + // Convert the remaining amount of ZRX to buy into remaining amount + // of WETH to sell, assuming entire amount can be sold in the current order. + uint256 remainingWethSellAmount = getPartialAmount( + orders[i].takerAssetAmount, + safeSub(orders[i].makerAssetAmount, orders[i].takerFee), // our exchange rate after fees + remainingZrxBuyAmount + ); + + // Attempt to sell the remaining amount of WETH. + FillResults memory singleFillResult = fillOrderNoThrow( + orders[i], + safeAdd(remainingWethSellAmount, 1), // we add 1 wei to the fill amount to make up for rounding errors + signatures[i] + ); + + // Update amounts filled and fees paid by maker and taker. + addFillResults(totalFillResults, singleFillResult); + zrxPurchased = safeSub(totalFillResults.makerAssetFilledAmount, totalFillResults.takerFeePaid); + + // Stop execution if the entire amount of ZRX has been bought. + if (zrxPurchased >= zrxBuyAmount) { + break; + } + } + + require( + zrxPurchased >= zrxBuyAmount, + "COMPLETE_FILL_FAILED" + ); + return totalFillResults; + } +} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol new file mode 100644 index 000000000..42cec4d36 --- /dev/null +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol @@ -0,0 +1,213 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.24; +pragma experimental ABIEncoderV2; + +import "./libs/LibConstants.sol"; +import "./mixins/MWeth.sol"; +import "./mixins/MAssets.sol"; +import "./mixins/MExchangeWrapper.sol"; +import "./interfaces/IForwarderCore.sol"; +import "../../utils/LibBytes/LibBytes.sol"; +import "../../protocol/Exchange/libs/LibOrder.sol"; +import "../../protocol/Exchange/libs/LibFillResults.sol"; +import "../../protocol/Exchange/libs/LibMath.sol"; + + +contract MixinForwarderCore is + LibFillResults, + LibMath, + LibConstants, + MWeth, + MAssets, + MExchangeWrapper, + IForwarderCore +{ + + using LibBytes for bytes; + + /// @dev Constructor approves ERC20 proxy to transfer ZRX and WETH on this contract's behalf. + constructor () + public + { + address proxyAddress = EXCHANGE.getAssetProxy(ERC20_DATA_ID); + if (proxyAddress != address(0)) { + ETHER_TOKEN.approve(proxyAddress, MAX_UINT); + ZRX_TOKEN.approve(proxyAddress, MAX_UINT); + } + } + + /// @dev Purchases as much of orders' makerAssets as possible by selling up to 95% of transaction's ETH value. + /// Any ZRX required to pay fees for primary orders will automatically be purchased by this contract. + /// 5% of ETH value is reserved for paying fees to order feeRecipients (in ZRX) and forwarding contract feeRecipient (in ETH). + /// Any ETH not spent will be refunded to sender. + /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset. + /// @param signatures Proofs that orders have been created by makers. + /// @param feeOrders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. Used to purchase ZRX for primary order fees. + /// @param feeSignatures Proofs that feeOrders have been created by makers. + /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient. + /// @param feeRecipient Address that will receive ETH when orders are filled. + /// @return Amounts filled and fees paid by maker and taker for both sets of orders. + function marketSellOrdersWithEth( + LibOrder.Order[] memory orders, + bytes[] memory signatures, + LibOrder.Order[] memory feeOrders, + bytes[] memory feeSignatures, + uint256 feePercentage, + address feeRecipient + ) + public + payable + returns ( + FillResults memory orderFillResults, + FillResults memory feeOrderFillResults + ) + { + // Convert ETH to WETH. + convertEthToWeth(); + + uint256 wethSellAmount; + uint256 zrxBuyAmount; + uint256 makerAssetAmountPurchased; + if (orders[0].makerAssetData.equals(ZRX_ASSET_DATA)) { + // Calculate amount of WETH that won't be spent on ETH fees. + wethSellAmount = getPartialAmount( + PERCENTAGE_DENOMINATOR, + safeAdd(PERCENTAGE_DENOMINATOR, feePercentage), + msg.value + ); + // Market sell available WETH. + // ZRX fees are paid with this contract's balance. + orderFillResults = marketSellWeth( + orders, + wethSellAmount, + signatures + ); + // The fee amount must be deducted from the amount transfered back to sender. + makerAssetAmountPurchased = safeSub(orderFillResults.makerAssetFilledAmount, orderFillResults.takerFeePaid); + } else { + // 5% of WETH is reserved for filling feeOrders and paying feeRecipient. + wethSellAmount = getPartialAmount( + MAX_WETH_FILL_PERCENTAGE, + PERCENTAGE_DENOMINATOR, + msg.value + ); + // Market sell 95% of WETH. + // ZRX fees are payed with this contract's balance. + orderFillResults = marketSellWeth( + orders, + wethSellAmount, + signatures + ); + // Buy back all ZRX spent on fees. + zrxBuyAmount = orderFillResults.takerFeePaid; + feeOrderFillResults = marketBuyExactZrxWithWeth( + feeOrders, + zrxBuyAmount, + feeSignatures + ); + makerAssetAmountPurchased = orderFillResults.makerAssetFilledAmount; + } + + // Transfer feePercentage of total ETH spent on primary orders to feeRecipient. + // Refund remaining ETH to msg.sender. + transferEthFeeAndRefund( + orderFillResults.takerAssetFilledAmount, + feeOrderFillResults.takerAssetFilledAmount, + feePercentage, + feeRecipient + ); + + // Transfer purchased assets to msg.sender. + transferAssetToSender(orders[0].makerAssetData, makerAssetAmountPurchased); + } + + /// @dev Attempt to purchase makerAssetFillAmount of makerAsset by selling ETH provided with transaction. + /// Any ZRX required to pay fees for primary orders will automatically be purchased by this contract. + /// Any ETH not spent will be refunded to sender. + /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset. + /// @param makerAssetFillAmount Desired amount of makerAsset to purchase. + /// @param signatures Proofs that orders have been created by makers. + /// @param feeOrders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. Used to purchase ZRX for primary order fees. + /// @param feeSignatures Proofs that feeOrders have been created by makers. + /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient. + /// @param feeRecipient Address that will receive ETH when orders are filled. + /// @return Amounts filled and fees paid by maker and taker for both sets of orders. + function marketBuyOrdersWithEth( + LibOrder.Order[] memory orders, + uint256 makerAssetFillAmount, + bytes[] memory signatures, + LibOrder.Order[] memory feeOrders, + bytes[] memory feeSignatures, + uint256 feePercentage, + address feeRecipient + ) + public + payable + returns ( + FillResults memory orderFillResults, + FillResults memory feeOrderFillResults + ) + { + // Convert ETH to WETH. + convertEthToWeth(); + + uint256 zrxBuyAmount; + uint256 makerAssetAmountPurchased; + if (orders[0].makerAssetData.equals(ZRX_ASSET_DATA)) { + // If the makerAsset is ZRX, it is not necessary to pay fees out of this + // contracts's ZRX balance because fees are factored into the price of the order. + orderFillResults = marketBuyExactZrxWithWeth( + orders, + makerAssetFillAmount, + signatures + ); + // The fee amount must be deducted from the amount transfered back to sender. + makerAssetAmountPurchased = safeSub(orderFillResults.makerAssetFilledAmount, orderFillResults.takerFeePaid); + } else { + // Attemp to purchase desired amount of makerAsset. + // ZRX fees are payed with this contract's balance. + orderFillResults = marketBuyExactAmountWithWeth( + orders, + makerAssetFillAmount, + signatures + ); + // Buy back all ZRX spent on fees. + zrxBuyAmount = orderFillResults.takerFeePaid; + feeOrderFillResults = marketBuyExactZrxWithWeth( + feeOrders, + zrxBuyAmount, + feeSignatures + ); + makerAssetAmountPurchased = orderFillResults.makerAssetFilledAmount; + } + + // Transfer feePercentage of total ETH spent on primary orders to feeRecipient. + // Refund remaining ETH to msg.sender. + transferEthFeeAndRefund( + orderFillResults.takerAssetFilledAmount, + feeOrderFillResults.takerAssetFilledAmount, + feePercentage, + feeRecipient + ); + + // Transfer purchased assets to msg.sender. + transferAssetToSender(orders[0].makerAssetData, makerAssetAmountPurchased); + } +} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinWeth.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinWeth.sol new file mode 100644 index 000000000..93e85e599 --- /dev/null +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinWeth.sol @@ -0,0 +1,114 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.24; + +import "../../protocol/Exchange/libs/LibMath.sol"; +import "./libs/LibConstants.sol"; +import "./mixins/MWeth.sol"; + + +contract MixinWeth is + LibMath, + LibConstants, + MWeth +{ + + /// @dev Default payabale function, this allows us to withdraw WETH + function () + public + payable + { + require( + msg.sender == address(ETHER_TOKEN), + "DEFAULT_FUNCTION_WETH_CONTRACT_ONLY" + ); + } + + /// @dev Converts message call's ETH value into WETH. + function convertEthToWeth() + internal + { + require( + msg.value > 0, + "INVALID_MSG_VALUE" + ); + ETHER_TOKEN.deposit.value(msg.value)(); + } + + /// @dev Transfers feePercentage of WETH spent on primary orders to feeRecipient. + /// Refunds any excess ETH to msg.sender. + /// @param wethSoldExcludingFeeOrders Amount of WETH sold when filling primary orders. + /// @param wethSoldForZrx Amount of WETH sold when purchasing ZRX required for primary order fees. + /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient. + /// @param feeRecipient Address that will receive ETH when orders are filled. + function transferEthFeeAndRefund( + uint256 wethSoldExcludingFeeOrders, + uint256 wethSoldForZrx, + uint256 feePercentage, + address feeRecipient + ) + internal + { + // Ensure feePercentage is less than 5%. + require( + feePercentage <= MAX_FEE_PERCENTAGE, + "FEE_PERCENTAGE_TOO_LARGE" + ); + + // Ensure that no extra WETH owned by this contract has been sold. + uint256 wethSold = safeAdd(wethSoldExcludingFeeOrders, wethSoldForZrx); + require( + wethSold <= msg.value, + "OVERSOLD_WETH" + ); + + // Calculate amount of WETH that hasn't been sold. + uint256 wethRemaining = safeSub(msg.value, wethSold); + + // Calculate ETH fee to pay to feeRecipient. + uint256 ethFee = getPartialAmount( + feePercentage, + PERCENTAGE_DENOMINATOR, + wethSoldExcludingFeeOrders + ); + + // Ensure fee is less than amount of WETH remaining. + require( + ethFee <= wethRemaining, + "INSUFFICIENT_ETH_REMAINING" + ); + + // Do nothing if no WETH remaining + if (wethRemaining > 0) { + // Convert remaining WETH to ETH + ETHER_TOKEN.withdraw(wethRemaining); + + // Pay ETH to feeRecipient + if (ethFee > 0) { + feeRecipient.transfer(ethFee); + } + + // Refund remaining ETH to msg.sender. + uint256 ethRefund = safeSub(wethRemaining, ethFee); + if (ethRefund > 0) { + msg.sender.transfer(ethRefund); + } + } + } +} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IAssets.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IAssets.sol new file mode 100644 index 000000000..1e034c003 --- /dev/null +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IAssets.sol @@ -0,0 +1,34 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.24; + + +contract IAssets { + + /// @dev Withdraws assets from this contract. The contract requires a ZRX balance in order to + /// function optimally, and this function allows the ZRX to be withdrawn by owner. It may also be + /// used to withdraw assets that were accidentally sent to this contract. + /// @param assetData Byte array encoded for the respective asset proxy. + /// @param amount Amount of ERC20 token to withdraw. + function withdrawAsset( + bytes assetData, + uint256 amount + ) + external; +} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IForwarder.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IForwarder.sol new file mode 100644 index 000000000..f5a26e2ba --- /dev/null +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IForwarder.sol @@ -0,0 +1,30 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.24; +pragma experimental ABIEncoderV2; + +import "./IForwarderCore.sol"; +import "./IAssets.sol"; + + +// solhint-disable no-empty-blocks +contract IForwarder is + IForwarderCore, + IAssets +{} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IForwarderCore.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IForwarderCore.sol new file mode 100644 index 000000000..74c7da01d --- /dev/null +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IForwarderCore.sol @@ -0,0 +1,80 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.24; +pragma experimental ABIEncoderV2; + +import "../../../protocol/Exchange/libs/LibOrder.sol"; +import "../../../protocol/Exchange/libs/LibFillResults.sol"; + + +contract IForwarderCore { + + /// @dev Purchases as much of orders' makerAssets as possible by selling up to 95% of transaction's ETH value. + /// Any ZRX required to pay fees for primary orders will automatically be purchased by this contract. + /// 5% of ETH value is reserved for paying fees to order feeRecipients (in ZRX) and forwarding contract feeRecipient (in ETH). + /// Any ETH not spent will be refunded to sender. + /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset. + /// @param signatures Proofs that orders have been created by makers. + /// @param feeOrders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. Used to purchase ZRX for primary order fees. + /// @param feeSignatures Proofs that feeOrders have been created by makers. + /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient. + /// @param feeRecipient Address that will receive ETH when orders are filled. + /// @return Amounts filled and fees paid by maker and taker for both sets of orders. + function marketSellOrdersWithEth( + LibOrder.Order[] memory orders, + bytes[] memory signatures, + LibOrder.Order[] memory feeOrders, + bytes[] memory feeSignatures, + uint256 feePercentage, + address feeRecipient + ) + public + payable + returns ( + LibFillResults.FillResults memory orderFillResults, + LibFillResults.FillResults memory feeOrderFillResults + ); + + /// @dev Attempt to purchase makerAssetFillAmount of makerAsset by selling ETH provided with transaction. + /// Any ZRX required to pay fees for primary orders will automatically be purchased by this contract. + /// Any ETH not spent will be refunded to sender. + /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset. + /// @param makerAssetFillAmount Desired amount of makerAsset to purchase. + /// @param signatures Proofs that orders have been created by makers. + /// @param feeOrders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. Used to purchase ZRX for primary order fees. + /// @param feeSignatures Proofs that feeOrders have been created by makers. + /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient. + /// @param feeRecipient Address that will receive ETH when orders are filled. + /// @return Amounts filled and fees paid by maker and taker for both sets of orders. + function marketBuyOrdersWithEth( + LibOrder.Order[] memory orders, + uint256 makerAssetFillAmount, + bytes[] memory signatures, + LibOrder.Order[] memory feeOrders, + bytes[] memory feeSignatures, + uint256 feePercentage, + address feeRecipient + ) + public + payable + returns ( + LibFillResults.FillResults memory orderFillResults, + LibFillResults.FillResults memory feeOrderFillResults + ); +} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/libs/LibConstants.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/libs/LibConstants.sol new file mode 100644 index 000000000..704e42ce3 --- /dev/null +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/libs/LibConstants.sol @@ -0,0 +1,62 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.24; + +import "../../../utils/LibBytes/LibBytes.sol"; +import "../../../protocol/Exchange/interfaces/IExchange.sol"; +import "../../../tokens/EtherToken/IEtherToken.sol"; +import "../../../tokens/ERC20Token/IERC20Token.sol"; + + +contract LibConstants { + + using LibBytes for bytes; + + bytes4 constant internal ERC20_DATA_ID = bytes4(keccak256("ERC20Token(address)")); + bytes4 constant internal ERC721_DATA_ID = bytes4(keccak256("ERC721Token(address,uint256)")); + uint256 constant internal MAX_UINT = 2**256 - 1; + uint256 constant internal PERCENTAGE_DENOMINATOR = 10**18; + uint256 constant internal MAX_FEE_PERCENTAGE = 5 * PERCENTAGE_DENOMINATOR / 100; // 5% + uint256 constant internal MAX_WETH_FILL_PERCENTAGE = 95 * PERCENTAGE_DENOMINATOR / 100; // 95% + + // solhint-disable var-name-mixedcase + IExchange internal EXCHANGE; + IEtherToken internal ETHER_TOKEN; + IERC20Token internal ZRX_TOKEN; + bytes internal ZRX_ASSET_DATA; + bytes internal WETH_ASSET_DATA; + // solhint-enable var-name-mixedcase + + constructor ( + address _exchange, + bytes memory _zrxAssetData, + bytes memory _wethAssetData + ) + public + { + EXCHANGE = IExchange(_exchange); + ZRX_ASSET_DATA = _zrxAssetData; + WETH_ASSET_DATA = _wethAssetData; + + address etherToken = _wethAssetData.readAddress(16); + address zrxToken = _zrxAssetData.readAddress(16); + ETHER_TOKEN = IEtherToken(etherToken); + ZRX_TOKEN = IERC20Token(zrxToken); + } +} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/libs/LibForwarderErrors.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/libs/LibForwarderErrors.sol new file mode 100644 index 000000000..fb3ade1db --- /dev/null +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/libs/LibForwarderErrors.sol @@ -0,0 +1,34 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +// solhint-disable +pragma solidity 0.4.24; + + +/// This contract is intended to serve as a reference, but is not actually used for efficiency reasons. +contract LibForwarderErrors { + string constant FEE_PERCENTAGE_TOO_LARGE = "FEE_PROPORTION_TOO_LARGE"; // Provided fee percentage greater than 5%. + string constant INSUFFICIENT_ETH_REMAINING = "INSUFFICIENT_ETH_REMAINING"; // Not enough ETH remaining to pay feeRecipient. + string constant OVERSOLD_WETH = "OVERSOLD_WETH"; // More WETH sold than provided with current message call. + string constant COMPLETE_FILL_FAILED = "COMPLETE_FILL_FAILED"; // Desired purchase amount not completely filled (required for ZRX fees only). + string constant TRANSFER_FAILED = "TRANSFER_FAILED"; // Asset transfer failed. + string constant UNSUPPORTED_ASSET_PROXY = "UNSUPPORTED_ASSET_PROXY"; // Proxy in assetData not supported. + string constant DEFAULT_FUNCTION_WETH_CONTRACT_ONLY = "DEFAULT_FUNCTION_WETH_CONTRACT_ONLY"; // Fallback function may only be used for WETH withdrawals. + string constant INVALID_MSG_VALUE = "INVALID_MSG_VALUE"; // msg.value must be greater than 0. + string constant INVALID_AMOUNT = "INVALID_AMOUNT"; // Amount must equal 1. +} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MAssets.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MAssets.sol new file mode 100644 index 000000000..83636432a --- /dev/null +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MAssets.sol @@ -0,0 +1,54 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.24; + +import "../interfaces/IAssets.sol"; + + +contract MAssets is + IAssets +{ + + /// @dev Transfers given amount of asset to sender. + /// @param assetData Byte array encoded for the respective asset proxy. + /// @param amount Amount of asset to transfer to sender. + function transferAssetToSender( + bytes memory assetData, + uint256 amount + ) + internal; + + /// @dev Decodes ERC20 assetData and transfers given amount to sender. + /// @param assetData Byte array encoded for the respective asset proxy. + /// @param amount Amount of asset to transfer to sender. + function transferERC20Token( + bytes memory assetData, + uint256 amount + ) + internal; + + /// @dev Decodes ERC721 assetData and transfers given amount to sender. + /// @param assetData Byte array encoded for the respective asset proxy. + /// @param amount Amount of asset to transfer to sender. + function transferERC721Token( + bytes memory assetData, + uint256 amount + ) + internal; +} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MExchangeWrapper.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MExchangeWrapper.sol new file mode 100644 index 000000000..13c26b03a --- /dev/null +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MExchangeWrapper.sol @@ -0,0 +1,87 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.24; +pragma experimental ABIEncoderV2; + +import "../../../protocol/Exchange/libs/LibOrder.sol"; +import "../../../protocol/Exchange/libs/LibFillResults.sol"; + + +contract MExchangeWrapper { + + /// @dev Fills the input order. + /// Returns false if the transaction would otherwise revert. + /// @param order Order struct containing order specifications. + /// @param takerAssetFillAmount Desired amount of takerAsset to sell. + /// @param signature Proof that order has been created by maker. + /// @return Amounts filled and fees paid by maker and taker. + function fillOrderNoThrow( + LibOrder.Order memory order, + uint256 takerAssetFillAmount, + bytes memory signature + ) + internal + returns (LibFillResults.FillResults memory fillResults); + + /// @dev Synchronously executes multiple calls of fillOrder until total amount of WETH has been sold by taker. + /// Returns false if the transaction would otherwise revert. + /// @param orders Array of order specifications. + /// @param wethSellAmount Desired amount of WETH to sell. + /// @param signatures Proofs that orders have been signed by makers. + /// @return Amounts filled and fees paid by makers and taker. + function marketSellWeth( + LibOrder.Order[] memory orders, + uint256 wethSellAmount, + bytes[] memory signatures + ) + internal + returns (LibFillResults.FillResults memory totalFillResults); + + /// @dev Synchronously executes multiple fill orders in a single transaction until total amount is bought by taker. + /// Returns false if the transaction would otherwise revert. + /// The asset being sold by taker must always be WETH. + /// @param orders Array of order specifications. + /// @param makerAssetFillAmount Desired amount of makerAsset to buy. + /// @param signatures Proofs that orders have been signed by makers. + /// @return Amounts filled and fees paid by makers and taker. + function marketBuyExactAmountWithWeth( + LibOrder.Order[] memory orders, + uint256 makerAssetFillAmount, + bytes[] memory signatures + ) + internal + returns (LibFillResults.FillResults memory totalFillResults); + + /// @dev Buys zrxBuyAmount of ZRX fee tokens, taking into account ZRX fees for each order. This will guarantee + /// that at least zrxBuyAmount of ZRX is purchased (sometimes slightly over due to rounding issues). + /// It is possible that a request to buy 200 ZRX will require purchasing 202 ZRX + /// as 2 ZRX is required to purchase the 200 ZRX fee tokens. This guarantees at least 200 ZRX for future purchases. + /// The asset being sold by taker must always be WETH. + /// @param orders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. + /// @param zrxBuyAmount Desired amount of ZRX to buy. + /// @param signatures Proofs that orders have been created by makers. + /// @return totalFillResults Amounts filled and fees paid by maker and taker. + function marketBuyExactZrxWithWeth( + LibOrder.Order[] memory orders, + uint256 zrxBuyAmount, + bytes[] memory signatures + ) + internal + returns (LibFillResults.FillResults memory totalFillResults); +} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MWeth.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MWeth.sol new file mode 100644 index 000000000..88e77be4e --- /dev/null +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MWeth.sol @@ -0,0 +1,41 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.24; + + +contract MWeth { + + /// @dev Converts message call's ETH value into WETH. + function convertEthToWeth() + internal; + + /// @dev Transfers feePercentage of WETH spent on primary orders to feeRecipient. + /// Refunds any excess ETH to msg.sender. + /// @param wethSoldExcludingFeeOrders Amount of WETH sold when filling primary orders. + /// @param wethSoldForZrx Amount of WETH sold when purchasing ZRX required for primary order fees. + /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient. + /// @param feeRecipient Address that will receive ETH when orders are filled. + function transferEthFeeAndRefund( + uint256 wethSoldExcludingFeeOrders, + uint256 wethSoldForZrx, + uint256 feePercentage, + address feeRecipient + ) + internal; +} diff --git a/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol b/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol new file mode 100644 index 000000000..dcbbd7fa5 --- /dev/null +++ b/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol @@ -0,0 +1,140 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.24; +pragma experimental ABIEncoderV2; + +import "../../protocol/Exchange/interfaces/IExchange.sol"; +import "../../protocol/Exchange/libs/LibOrder.sol"; +import "../../tokens/ERC20Token/IERC20Token.sol"; +import "../../tokens/ERC721Token/IERC721Token.sol"; +import "../../utils/LibBytes/LibBytes.sol"; + + +contract OrderValidator { + + bytes4 constant internal ERC20_DATA_ID = bytes4(keccak256("ERC20Token(address)")); + bytes4 constant internal ERC721_DATA_ID = bytes4(keccak256("ERC721Token(address,uint256)")); + + using LibBytes for bytes; + + struct TraderInfo { + uint256 makerBalance; // Maker's balance of makerAsset + uint256 makerAllowance; // Maker's allowance to corresponding AssetProxy + uint256 takerBalance; // Taker's balance of takerAsset + uint256 takerAllowance; // Taker's allowance to corresponding AssetProxy + } + + // Exchange contract. + // solhint-disable-next-line var-name-mixedcase + IExchange internal EXCHANGE; + + constructor (address _exchange) + public + { + EXCHANGE = IExchange(_exchange); + } + + /// @dev Fetches information for order and maker/taker of order. + /// @param order The order structure. + /// @param takerAddress Address that will be filling the order. + /// @return OrderInfo and TraderInfo instances for given order. + function getOrderAndTraderInfo(LibOrder.Order memory order, address takerAddress) + public + view + returns (LibOrder.OrderInfo memory orderInfo, TraderInfo memory traderInfo) + { + orderInfo = EXCHANGE.getOrderInfo(order); + traderInfo = getTraderInfo(order, takerAddress); + return (orderInfo, traderInfo); + } + + /// @dev Fetches information for all passed in orders and the makers/takers of each order. + /// @param orders Array of order specifications. + /// @param takerAddresses Array of taker addresses corresponding to each order. + /// @return Arrays of OrderInfo and TraderInfo instances that correspond to each order. + function getOrdersAndTradersInfo(LibOrder.Order[] memory orders, address[] memory takerAddresses) + public + view + returns (LibOrder.OrderInfo[] memory ordersInfo, TraderInfo[] memory tradersInfo) + { + ordersInfo = EXCHANGE.getOrdersInfo(orders); + tradersInfo = getTradersInfo(orders, takerAddresses); + return (ordersInfo, tradersInfo); + } + + /// @dev Fetches balance and allowances for maker and taker of order. + /// @param order The order structure. + /// @param takerAddress Address that will be filling the order. + /// @return Balances and allowances of maker and taker of order. + function getTraderInfo(LibOrder.Order memory order, address takerAddress) + public + view + returns (TraderInfo memory traderInfo) + { + (traderInfo.makerBalance, traderInfo.makerAllowance) = getBalanceAndAllowance(order.makerAddress, order.makerAssetData); + (traderInfo.takerBalance, traderInfo.takerAllowance) = getBalanceAndAllowance(takerAddress, order.takerAssetData); + return traderInfo; + } + + /// @dev Fetches balances and allowances of maker and taker for each provided order. + /// @param orders Array of order specifications. + /// @param takerAddresses Array of taker addresses corresponding to each order. + /// @return Array of balances and allowances for maker and taker of each order. + function getTradersInfo(LibOrder.Order[] memory orders, address[] memory takerAddresses) + public + view + returns (TraderInfo[] memory) + { + uint256 ordersLength = orders.length; + TraderInfo[] memory tradersInfo = new TraderInfo[](ordersLength); + for (uint256 i = 0; i != ordersLength; i++) { + tradersInfo[i] = getTraderInfo(orders[i], takerAddresses[i]); + } + return tradersInfo; + } + + /// @dev Fetches token balances and allowances of an address to given assetProxy. Supports ERC20 and ERC721. + /// @param target Address to fetch balances and allowances of. + /// @param assetData Encoded data that can be decoded by a specified proxy contract when transferring asset. + /// @return Balance of asset and allowance set to given proxy of asset. + /// For ERC721 tokens, these values will always be 1 or 0. + function getBalanceAndAllowance(address target, bytes memory assetData) + public + view + returns (uint256 balance, uint256 allowance) + { + bytes4 assetProxyId = assetData.readBytes4(0); + address token = assetData.readAddress(16); + address assetProxy = EXCHANGE.getAssetProxy(assetProxyId); + + if (assetProxyId == ERC20_DATA_ID) { + balance = IERC20Token(token).balanceOf(target); + allowance = IERC20Token(token).allowance(target, assetProxy); + } else if (assetProxyId == ERC721_DATA_ID) { + uint256 tokenId = assetData.readUint256(36); + address owner = IERC721Token(token).ownerOf(tokenId); + balance = target == owner ? 1 : 0; + bool isApproved = IERC721Token(token).isApprovedForAll(target, assetProxy) || IERC721Token(token).getApproved(tokenId) == assetProxy; + allowance = isApproved ? 1 : 0; + } else { + revert("UNSUPPORTED_ASSET_PROXY"); + } + return (balance, allowance); + } +} diff --git a/packages/contracts/src/2.0.0/forwarder/Forwarder.sol b/packages/contracts/src/2.0.0/forwarder/Forwarder.sol deleted file mode 100644 index 6b17bb29b..000000000 --- a/packages/contracts/src/2.0.0/forwarder/Forwarder.sol +++ /dev/null @@ -1,51 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "./MixinWeth.sol"; -import "./MixinForwarderCore.sol"; -import "./libs/LibConstants.sol"; -import "./MixinAssets.sol"; -import "./MixinExchangeWrapper.sol"; - - -// solhint-disable no-empty-blocks -contract Forwarder is - LibConstants, - MixinWeth, - MixinAssets, - MixinExchangeWrapper, - MixinForwarderCore -{ - - constructor ( - address _exchange, - bytes memory _zrxAssetData, - bytes memory _wethAssetData - ) - public - LibConstants( - _exchange, - _zrxAssetData, - _wethAssetData - ) - MixinForwarderCore() - {} -} diff --git a/packages/contracts/src/2.0.0/forwarder/MixinAssets.sol b/packages/contracts/src/2.0.0/forwarder/MixinAssets.sol deleted file mode 100644 index e06f9a8e3..000000000 --- a/packages/contracts/src/2.0.0/forwarder/MixinAssets.sol +++ /dev/null @@ -1,144 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../utils/LibBytes/LibBytes.sol"; -import "../utils/Ownable/Ownable.sol"; -import "../tokens/ERC20Token/IERC20Token.sol"; -import "../tokens/ERC721Token/IERC721Token.sol"; -import "./libs/LibConstants.sol"; -import "./mixins/MAssets.sol"; - - -contract MixinAssets is - Ownable, - LibConstants, - MAssets -{ - - using LibBytes for bytes; - - bytes4 constant internal ERC20_TRANSFER_SELECTOR = bytes4(keccak256("transfer(address,uint256)")); - - /// @dev Withdraws assets from this contract. The contract requires a ZRX balance in order to - /// function optimally, and this function allows the ZRX to be withdrawn by owner. It may also be - /// used to withdraw assets that were accidentally sent to this contract. - /// @param assetData Byte array encoded for the respective asset proxy. - /// @param amount Amount of ERC20 token to withdraw. - function withdrawAsset( - bytes assetData, - uint256 amount - ) - external - onlyOwner - { - transferAssetToSender(assetData, amount); - } - - /// @dev Transfers given amount of asset to sender. - /// @param assetData Byte array encoded for the respective asset proxy. - /// @param amount Amount of asset to transfer to sender. - function transferAssetToSender( - bytes memory assetData, - uint256 amount - ) - internal - { - bytes4 proxyId = assetData.readBytes4(0); - - if (proxyId == ERC20_DATA_ID) { - transferERC20Token(assetData, amount); - } else if (proxyId == ERC721_DATA_ID) { - transferERC721Token(assetData, amount); - } else { - revert("UNSUPPORTED_TOKEN_PROXY"); - } - } - - /// @dev Decodes ERC20 assetData and transfers given amount to sender. - /// @param assetData Byte array encoded for the respective asset proxy. - /// @param amount Amount of asset to transfer to sender. - function transferERC20Token( - bytes memory assetData, - uint256 amount - ) - internal - { - address token = assetData.readAddress(16); - - // Transfer tokens. - // We do a raw call so we can check the success separate - // from the return data. - bool success = token.call(abi.encodeWithSelector( - ERC20_TRANSFER_SELECTOR, - msg.sender, - amount - )); - require( - success, - "TRANSFER_FAILED" - ); - - // Check return data. - // If there is no return data, we assume the token incorrectly - // does not return a bool. In this case we expect it to revert - // on failure, which was handled above. - // If the token does return data, we require that it is a single - // value that evaluates to true. - assembly { - if returndatasize { - success := 0 - if eq(returndatasize, 32) { - // First 64 bytes of memory are reserved scratch space - returndatacopy(0, 0, 32) - success := mload(0) - } - } - } - require( - success, - "TRANSFER_FAILED" - ); - } - - /// @dev Decodes ERC721 assetData and transfers given amount to sender. - /// @param assetData Byte array encoded for the respective asset proxy. - /// @param amount Amount of asset to transfer to sender. - function transferERC721Token( - bytes memory assetData, - uint256 amount - ) - internal - { - require( - amount == 1, - "INVALID_AMOUNT" - ); - // Decode asset data. - address token = assetData.readAddress(16); - uint256 tokenId = assetData.readUint256(36); - - // Perform transfer. - IERC721Token(token).transferFrom( - address(this), - msg.sender, - tokenId - ); - } -} diff --git a/packages/contracts/src/2.0.0/forwarder/MixinExchangeWrapper.sol b/packages/contracts/src/2.0.0/forwarder/MixinExchangeWrapper.sol deleted file mode 100644 index 4584bb840..000000000 --- a/packages/contracts/src/2.0.0/forwarder/MixinExchangeWrapper.sol +++ /dev/null @@ -1,263 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "./libs/LibConstants.sol"; -import "./mixins/MExchangeWrapper.sol"; -import "../protocol/Exchange/libs/LibAbiEncoder.sol"; -import "../protocol/Exchange/libs/LibOrder.sol"; -import "../protocol/Exchange/libs/LibFillResults.sol"; -import "../protocol/Exchange/libs/LibMath.sol"; - - -contract MixinExchangeWrapper is - LibAbiEncoder, - LibFillResults, - LibMath, - LibConstants, - MExchangeWrapper -{ - - /// @dev Fills the input order. - /// Returns false if the transaction would otherwise revert. - /// @param order Order struct containing order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param signature Proof that order has been created by maker. - /// @return Amounts filled and fees paid by maker and taker. - function fillOrderNoThrow( - LibOrder.Order memory order, - uint256 takerAssetFillAmount, - bytes memory signature - ) - internal - returns (FillResults memory fillResults) - { - // ABI encode calldata for `fillOrder` - bytes memory fillOrderCalldata = abiEncodeFillOrder( - order, - takerAssetFillAmount, - signature - ); - - address exchange = address(EXCHANGE); - - // Call `fillOrder` and handle any exceptions gracefully - assembly { - let success := call( - gas, // forward all gas, TODO: look into gas consumption of assert/throw - exchange, // call address of Exchange contract - 0, // transfer 0 wei - add(fillOrderCalldata, 32), // pointer to start of input (skip array length in first 32 bytes) - mload(fillOrderCalldata), // length of input - fillOrderCalldata, // write output over input - 128 // output size is 128 bytes - ) - switch success - case 0 { - mstore(fillResults, 0) - mstore(add(fillResults, 32), 0) - mstore(add(fillResults, 64), 0) - mstore(add(fillResults, 96), 0) - } - case 1 { - mstore(fillResults, mload(fillOrderCalldata)) - mstore(add(fillResults, 32), mload(add(fillOrderCalldata, 32))) - mstore(add(fillResults, 64), mload(add(fillOrderCalldata, 64))) - mstore(add(fillResults, 96), mload(add(fillOrderCalldata, 96))) - } - } - return fillResults; - } - - /// @dev Synchronously executes multiple calls of fillOrder until total amount of WETH has been sold by taker. - /// Returns false if the transaction would otherwise revert. - /// @param orders Array of order specifications. - /// @param wethSellAmount Desired amount of WETH to sell. - /// @param signatures Proofs that orders have been signed by makers. - /// @return Amounts filled and fees paid by makers and taker. - function marketSellWeth( - LibOrder.Order[] memory orders, - uint256 wethSellAmount, - bytes[] memory signatures - ) - internal - returns (FillResults memory totalFillResults) - { - bytes memory makerAssetData = orders[0].makerAssetData; - bytes memory wethAssetData = WETH_ASSET_DATA; - - uint256 ordersLength = orders.length; - for (uint256 i = 0; i != ordersLength; i++) { - - // We assume that asset being bought by taker is the same for each order. - // We assume that asset being sold by taker is WETH for each order. - orders[i].makerAssetData = makerAssetData; - orders[i].takerAssetData = wethAssetData; - - // Calculate the remaining amount of WETH to sell - uint256 remainingTakerAssetFillAmount = safeSub(wethSellAmount, totalFillResults.takerAssetFilledAmount); - - // Attempt to sell the remaining amount of WETH - FillResults memory singleFillResults = fillOrderNoThrow( - orders[i], - remainingTakerAssetFillAmount, - signatures[i] - ); - - // Update amounts filled and fees paid by maker and taker - addFillResults(totalFillResults, singleFillResults); - - // Stop execution if the entire amount of takerAsset has been sold - if (totalFillResults.takerAssetFilledAmount >= wethSellAmount) { - break; - } - } - return totalFillResults; - } - - /// @dev Synchronously executes multiple fill orders in a single transaction until total amount is bought by taker. - /// Returns false if the transaction would otherwise revert. - /// The asset being sold by taker must always be WETH. - /// @param orders Array of order specifications. - /// @param makerAssetFillAmount Desired amount of makerAsset to buy. - /// @param signatures Proofs that orders have been signed by makers. - /// @return Amounts filled and fees paid by makers and taker. - function marketBuyExactAmountWithWeth( - LibOrder.Order[] memory orders, - uint256 makerAssetFillAmount, - bytes[] memory signatures - ) - internal - returns (FillResults memory totalFillResults) - { - bytes memory makerAssetData = orders[0].makerAssetData; - bytes memory wethAssetData = WETH_ASSET_DATA; - - uint256 ordersLength = orders.length; - for (uint256 i = 0; i != ordersLength; i++) { - - // We assume that asset being bought by taker is the same for each order. - // We assume that asset being sold by taker is WETH for each order. - orders[i].makerAssetData = makerAssetData; - orders[i].takerAssetData = wethAssetData; - - // Calculate the remaining amount of makerAsset to buy - uint256 remainingMakerAssetFillAmount = safeSub(makerAssetFillAmount, totalFillResults.makerAssetFilledAmount); - - // Convert the remaining amount of makerAsset to buy into remaining amount - // of takerAsset to sell, assuming entire amount can be sold in the current order - uint256 remainingTakerAssetFillAmount = getPartialAmount( - orders[i].takerAssetAmount, - orders[i].makerAssetAmount, - remainingMakerAssetFillAmount - ); - - // Attempt to sell the remaining amount of takerAsset - FillResults memory singleFillResults = fillOrderNoThrow( - orders[i], - remainingTakerAssetFillAmount, - signatures[i] - ); - - // Update amounts filled and fees paid by maker and taker - addFillResults(totalFillResults, singleFillResults); - - // Stop execution if the entire amount of makerAsset has been bought - uint256 makerAssetFilledAmount = totalFillResults.makerAssetFilledAmount; - if (makerAssetFilledAmount >= makerAssetFillAmount) { - break; - } - } - - require( - makerAssetFilledAmount >= makerAssetFillAmount, - "COMPLETE_FILL_FAILED" - ); - return totalFillResults; - } - - /// @dev Buys zrxBuyAmount of ZRX fee tokens, taking into account ZRX fees for each order. This will guarantee - /// that at least zrxBuyAmount of ZRX is purchased (sometimes slightly over due to rounding issues). - /// It is possible that a request to buy 200 ZRX will require purchasing 202 ZRX - /// as 2 ZRX is required to purchase the 200 ZRX fee tokens. This guarantees at least 200 ZRX for future purchases. - /// The asset being sold by taker must always be WETH. - /// @param orders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. - /// @param zrxBuyAmount Desired amount of ZRX to buy. - /// @param signatures Proofs that orders have been created by makers. - /// @return totalFillResults Amounts filled and fees paid by maker and taker. - function marketBuyExactZrxWithWeth( - LibOrder.Order[] memory orders, - uint256 zrxBuyAmount, - bytes[] memory signatures - ) - internal - returns (FillResults memory totalFillResults) - { - // Do nothing if zrxBuyAmount == 0 - if (zrxBuyAmount == 0) { - return totalFillResults; - } - - bytes memory zrxAssetData = ZRX_ASSET_DATA; - bytes memory wethAssetData = WETH_ASSET_DATA; - uint256 zrxPurchased = 0; - - uint256 ordersLength = orders.length; - for (uint256 i = 0; i != ordersLength; i++) { - - // All of these are ZRX/WETH, so we can drop the respective assetData from calldata. - orders[i].makerAssetData = zrxAssetData; - orders[i].takerAssetData = wethAssetData; - - // Calculate the remaining amount of ZRX to buy. - uint256 remainingZrxBuyAmount = safeSub(zrxBuyAmount, zrxPurchased); - - // Convert the remaining amount of ZRX to buy into remaining amount - // of WETH to sell, assuming entire amount can be sold in the current order. - uint256 remainingWethSellAmount = getPartialAmount( - orders[i].takerAssetAmount, - safeSub(orders[i].makerAssetAmount, orders[i].takerFee), // our exchange rate after fees - remainingZrxBuyAmount - ); - - // Attempt to sell the remaining amount of WETH. - FillResults memory singleFillResult = fillOrderNoThrow( - orders[i], - safeAdd(remainingWethSellAmount, 1), // we add 1 wei to the fill amount to make up for rounding errors - signatures[i] - ); - - // Update amounts filled and fees paid by maker and taker. - addFillResults(totalFillResults, singleFillResult); - zrxPurchased = safeSub(totalFillResults.makerAssetFilledAmount, totalFillResults.takerFeePaid); - - // Stop execution if the entire amount of ZRX has been bought. - if (zrxPurchased >= zrxBuyAmount) { - break; - } - } - - require( - zrxPurchased >= zrxBuyAmount, - "COMPLETE_FILL_FAILED" - ); - return totalFillResults; - } -} diff --git a/packages/contracts/src/2.0.0/forwarder/MixinForwarderCore.sol b/packages/contracts/src/2.0.0/forwarder/MixinForwarderCore.sol deleted file mode 100644 index 93cbf79be..000000000 --- a/packages/contracts/src/2.0.0/forwarder/MixinForwarderCore.sol +++ /dev/null @@ -1,213 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "./libs/LibConstants.sol"; -import "./mixins/MWeth.sol"; -import "./mixins/MAssets.sol"; -import "./mixins/MExchangeWrapper.sol"; -import "./interfaces/IForwarderCore.sol"; -import "../utils/LibBytes/LibBytes.sol"; -import "../protocol/Exchange/libs/LibOrder.sol"; -import "../protocol/Exchange/libs/LibFillResults.sol"; -import "../protocol/Exchange/libs/LibMath.sol"; - - -contract MixinForwarderCore is - LibFillResults, - LibMath, - LibConstants, - MWeth, - MAssets, - MExchangeWrapper, - IForwarderCore -{ - - using LibBytes for bytes; - - /// @dev Constructor approves ERC20 proxy to transfer ZRX and WETH on this contract's behalf. - constructor () - public - { - address proxyAddress = EXCHANGE.getAssetProxy(ERC20_DATA_ID); - if (proxyAddress != address(0)) { - ETHER_TOKEN.approve(proxyAddress, MAX_UINT); - ZRX_TOKEN.approve(proxyAddress, MAX_UINT); - } - } - - /// @dev Purchases as much of orders' makerAssets as possible by selling up to 95% of transaction's ETH value. - /// Any ZRX required to pay fees for primary orders will automatically be purchased by this contract. - /// 5% of ETH value is reserved for paying fees to order feeRecipients (in ZRX) and forwarding contract feeRecipient (in ETH). - /// Any ETH not spent will be refunded to sender. - /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset. - /// @param signatures Proofs that orders have been created by makers. - /// @param feeOrders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. Used to purchase ZRX for primary order fees. - /// @param feeSignatures Proofs that feeOrders have been created by makers. - /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient. - /// @param feeRecipient Address that will receive ETH when orders are filled. - /// @return Amounts filled and fees paid by maker and taker for both sets of orders. - function marketSellOrdersWithEth( - LibOrder.Order[] memory orders, - bytes[] memory signatures, - LibOrder.Order[] memory feeOrders, - bytes[] memory feeSignatures, - uint256 feePercentage, - address feeRecipient - ) - public - payable - returns ( - FillResults memory orderFillResults, - FillResults memory feeOrderFillResults - ) - { - // Convert ETH to WETH. - convertEthToWeth(); - - uint256 wethSellAmount; - uint256 zrxBuyAmount; - uint256 makerAssetAmountPurchased; - if (orders[0].makerAssetData.equals(ZRX_ASSET_DATA)) { - // Calculate amount of WETH that won't be spent on ETH fees. - wethSellAmount = getPartialAmount( - PERCENTAGE_DENOMINATOR, - safeAdd(PERCENTAGE_DENOMINATOR, feePercentage), - msg.value - ); - // Market sell available WETH. - // ZRX fees are paid with this contract's balance. - orderFillResults = marketSellWeth( - orders, - wethSellAmount, - signatures - ); - // The fee amount must be deducted from the amount transfered back to sender. - makerAssetAmountPurchased = safeSub(orderFillResults.makerAssetFilledAmount, orderFillResults.takerFeePaid); - } else { - // 5% of WETH is reserved for filling feeOrders and paying feeRecipient. - wethSellAmount = getPartialAmount( - MAX_WETH_FILL_PERCENTAGE, - PERCENTAGE_DENOMINATOR, - msg.value - ); - // Market sell 95% of WETH. - // ZRX fees are payed with this contract's balance. - orderFillResults = marketSellWeth( - orders, - wethSellAmount, - signatures - ); - // Buy back all ZRX spent on fees. - zrxBuyAmount = orderFillResults.takerFeePaid; - feeOrderFillResults = marketBuyExactZrxWithWeth( - feeOrders, - zrxBuyAmount, - feeSignatures - ); - makerAssetAmountPurchased = orderFillResults.makerAssetFilledAmount; - } - - // Transfer feePercentage of total ETH spent on primary orders to feeRecipient. - // Refund remaining ETH to msg.sender. - transferEthFeeAndRefund( - orderFillResults.takerAssetFilledAmount, - feeOrderFillResults.takerAssetFilledAmount, - feePercentage, - feeRecipient - ); - - // Transfer purchased assets to msg.sender. - transferAssetToSender(orders[0].makerAssetData, makerAssetAmountPurchased); - } - - /// @dev Attempt to purchase makerAssetFillAmount of makerAsset by selling ETH provided with transaction. - /// Any ZRX required to pay fees for primary orders will automatically be purchased by this contract. - /// Any ETH not spent will be refunded to sender. - /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset. - /// @param makerAssetFillAmount Desired amount of makerAsset to purchase. - /// @param signatures Proofs that orders have been created by makers. - /// @param feeOrders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. Used to purchase ZRX for primary order fees. - /// @param feeSignatures Proofs that feeOrders have been created by makers. - /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient. - /// @param feeRecipient Address that will receive ETH when orders are filled. - /// @return Amounts filled and fees paid by maker and taker for both sets of orders. - function marketBuyOrdersWithEth( - LibOrder.Order[] memory orders, - uint256 makerAssetFillAmount, - bytes[] memory signatures, - LibOrder.Order[] memory feeOrders, - bytes[] memory feeSignatures, - uint256 feePercentage, - address feeRecipient - ) - public - payable - returns ( - FillResults memory orderFillResults, - FillResults memory feeOrderFillResults - ) - { - // Convert ETH to WETH. - convertEthToWeth(); - - uint256 zrxBuyAmount; - uint256 makerAssetAmountPurchased; - if (orders[0].makerAssetData.equals(ZRX_ASSET_DATA)) { - // If the makerAsset is ZRX, it is not necessary to pay fees out of this - // contracts's ZRX balance because fees are factored into the price of the order. - orderFillResults = marketBuyExactZrxWithWeth( - orders, - makerAssetFillAmount, - signatures - ); - // The fee amount must be deducted from the amount transfered back to sender. - makerAssetAmountPurchased = safeSub(orderFillResults.makerAssetFilledAmount, orderFillResults.takerFeePaid); - } else { - // Attemp to purchase desired amount of makerAsset. - // ZRX fees are payed with this contract's balance. - orderFillResults = marketBuyExactAmountWithWeth( - orders, - makerAssetFillAmount, - signatures - ); - // Buy back all ZRX spent on fees. - zrxBuyAmount = orderFillResults.takerFeePaid; - feeOrderFillResults = marketBuyExactZrxWithWeth( - feeOrders, - zrxBuyAmount, - feeSignatures - ); - makerAssetAmountPurchased = orderFillResults.makerAssetFilledAmount; - } - - // Transfer feePercentage of total ETH spent on primary orders to feeRecipient. - // Refund remaining ETH to msg.sender. - transferEthFeeAndRefund( - orderFillResults.takerAssetFilledAmount, - feeOrderFillResults.takerAssetFilledAmount, - feePercentage, - feeRecipient - ); - - // Transfer purchased assets to msg.sender. - transferAssetToSender(orders[0].makerAssetData, makerAssetAmountPurchased); - } -} diff --git a/packages/contracts/src/2.0.0/forwarder/MixinWeth.sol b/packages/contracts/src/2.0.0/forwarder/MixinWeth.sol deleted file mode 100644 index e07940776..000000000 --- a/packages/contracts/src/2.0.0/forwarder/MixinWeth.sol +++ /dev/null @@ -1,114 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../protocol/Exchange/libs/LibMath.sol"; -import "./libs/LibConstants.sol"; -import "./mixins/MWeth.sol"; - - -contract MixinWeth is - LibMath, - LibConstants, - MWeth -{ - - /// @dev Default payabale function, this allows us to withdraw WETH - function () - public - payable - { - require( - msg.sender == address(ETHER_TOKEN), - "DEFAULT_FUNCTION_WETH_CONTRACT_ONLY" - ); - } - - /// @dev Converts message call's ETH value into WETH. - function convertEthToWeth() - internal - { - require( - msg.value > 0, - "INVALID_MSG_VALUE" - ); - ETHER_TOKEN.deposit.value(msg.value)(); - } - - /// @dev Transfers feePercentage of WETH spent on primary orders to feeRecipient. - /// Refunds any excess ETH to msg.sender. - /// @param wethSoldExcludingFeeOrders Amount of WETH sold when filling primary orders. - /// @param wethSoldForZrx Amount of WETH sold when purchasing ZRX required for primary order fees. - /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient. - /// @param feeRecipient Address that will receive ETH when orders are filled. - function transferEthFeeAndRefund( - uint256 wethSoldExcludingFeeOrders, - uint256 wethSoldForZrx, - uint256 feePercentage, - address feeRecipient - ) - internal - { - // Ensure feePercentage is less than 5%. - require( - feePercentage <= MAX_FEE_PERCENTAGE, - "FEE_PERCENTAGE_TOO_LARGE" - ); - - // Ensure that no extra WETH owned by this contract has been sold. - uint256 wethSold = safeAdd(wethSoldExcludingFeeOrders, wethSoldForZrx); - require( - wethSold <= msg.value, - "OVERSOLD_WETH" - ); - - // Calculate amount of WETH that hasn't been sold. - uint256 wethRemaining = safeSub(msg.value, wethSold); - - // Calculate ETH fee to pay to feeRecipient. - uint256 ethFee = getPartialAmount( - feePercentage, - PERCENTAGE_DENOMINATOR, - wethSoldExcludingFeeOrders - ); - - // Ensure fee is less than amount of WETH remaining. - require( - ethFee <= wethRemaining, - "INSUFFICIENT_ETH_REMAINING" - ); - - // Do nothing if no WETH remaining - if (wethRemaining > 0) { - // Convert remaining WETH to ETH - ETHER_TOKEN.withdraw(wethRemaining); - - // Pay ETH to feeRecipient - if (ethFee > 0) { - feeRecipient.transfer(ethFee); - } - - // Refund remaining ETH to msg.sender. - uint256 ethRefund = safeSub(wethRemaining, ethFee); - if (ethRefund > 0) { - msg.sender.transfer(ethRefund); - } - } - } -} diff --git a/packages/contracts/src/2.0.0/forwarder/interfaces/IAssets.sol b/packages/contracts/src/2.0.0/forwarder/interfaces/IAssets.sol deleted file mode 100644 index 1e034c003..000000000 --- a/packages/contracts/src/2.0.0/forwarder/interfaces/IAssets.sol +++ /dev/null @@ -1,34 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - - -contract IAssets { - - /// @dev Withdraws assets from this contract. The contract requires a ZRX balance in order to - /// function optimally, and this function allows the ZRX to be withdrawn by owner. It may also be - /// used to withdraw assets that were accidentally sent to this contract. - /// @param assetData Byte array encoded for the respective asset proxy. - /// @param amount Amount of ERC20 token to withdraw. - function withdrawAsset( - bytes assetData, - uint256 amount - ) - external; -} diff --git a/packages/contracts/src/2.0.0/forwarder/interfaces/IForwarder.sol b/packages/contracts/src/2.0.0/forwarder/interfaces/IForwarder.sol deleted file mode 100644 index f5a26e2ba..000000000 --- a/packages/contracts/src/2.0.0/forwarder/interfaces/IForwarder.sol +++ /dev/null @@ -1,30 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "./IForwarderCore.sol"; -import "./IAssets.sol"; - - -// solhint-disable no-empty-blocks -contract IForwarder is - IForwarderCore, - IAssets -{} diff --git a/packages/contracts/src/2.0.0/forwarder/interfaces/IForwarderCore.sol b/packages/contracts/src/2.0.0/forwarder/interfaces/IForwarderCore.sol deleted file mode 100644 index 3ecbb133b..000000000 --- a/packages/contracts/src/2.0.0/forwarder/interfaces/IForwarderCore.sol +++ /dev/null @@ -1,80 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "../../protocol/Exchange/libs/LibOrder.sol"; -import "../../protocol/Exchange/libs/LibFillResults.sol"; - - -contract IForwarderCore { - - /// @dev Purchases as much of orders' makerAssets as possible by selling up to 95% of transaction's ETH value. - /// Any ZRX required to pay fees for primary orders will automatically be purchased by this contract. - /// 5% of ETH value is reserved for paying fees to order feeRecipients (in ZRX) and forwarding contract feeRecipient (in ETH). - /// Any ETH not spent will be refunded to sender. - /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset. - /// @param signatures Proofs that orders have been created by makers. - /// @param feeOrders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. Used to purchase ZRX for primary order fees. - /// @param feeSignatures Proofs that feeOrders have been created by makers. - /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient. - /// @param feeRecipient Address that will receive ETH when orders are filled. - /// @return Amounts filled and fees paid by maker and taker for both sets of orders. - function marketSellOrdersWithEth( - LibOrder.Order[] memory orders, - bytes[] memory signatures, - LibOrder.Order[] memory feeOrders, - bytes[] memory feeSignatures, - uint256 feePercentage, - address feeRecipient - ) - public - payable - returns ( - LibFillResults.FillResults memory orderFillResults, - LibFillResults.FillResults memory feeOrderFillResults - ); - - /// @dev Attempt to purchase makerAssetFillAmount of makerAsset by selling ETH provided with transaction. - /// Any ZRX required to pay fees for primary orders will automatically be purchased by this contract. - /// Any ETH not spent will be refunded to sender. - /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset. - /// @param makerAssetFillAmount Desired amount of makerAsset to purchase. - /// @param signatures Proofs that orders have been created by makers. - /// @param feeOrders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. Used to purchase ZRX for primary order fees. - /// @param feeSignatures Proofs that feeOrders have been created by makers. - /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient. - /// @param feeRecipient Address that will receive ETH when orders are filled. - /// @return Amounts filled and fees paid by maker and taker for both sets of orders. - function marketBuyOrdersWithEth( - LibOrder.Order[] memory orders, - uint256 makerAssetFillAmount, - bytes[] memory signatures, - LibOrder.Order[] memory feeOrders, - bytes[] memory feeSignatures, - uint256 feePercentage, - address feeRecipient - ) - public - payable - returns ( - LibFillResults.FillResults memory orderFillResults, - LibFillResults.FillResults memory feeOrderFillResults - ); -} diff --git a/packages/contracts/src/2.0.0/forwarder/libs/LibConstants.sol b/packages/contracts/src/2.0.0/forwarder/libs/LibConstants.sol deleted file mode 100644 index fb9691fe8..000000000 --- a/packages/contracts/src/2.0.0/forwarder/libs/LibConstants.sol +++ /dev/null @@ -1,62 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../utils/LibBytes/LibBytes.sol"; -import "../../protocol/Exchange/interfaces/IExchange.sol"; -import "../../tokens/EtherToken/IEtherToken.sol"; -import "../../tokens/ERC20Token/IERC20Token.sol"; - - -contract LibConstants { - - using LibBytes for bytes; - - bytes4 constant internal ERC20_DATA_ID = bytes4(keccak256("ERC20Token(address)")); - bytes4 constant internal ERC721_DATA_ID = bytes4(keccak256("ERC721Token(address,uint256)")); - uint256 constant internal MAX_UINT = 2**256 - 1; - uint256 constant internal PERCENTAGE_DENOMINATOR = 10**18; - uint256 constant internal MAX_FEE_PERCENTAGE = 5 * PERCENTAGE_DENOMINATOR / 100; // 5% - uint256 constant internal MAX_WETH_FILL_PERCENTAGE = 95 * PERCENTAGE_DENOMINATOR / 100; // 95% - - // solhint-disable var-name-mixedcase - IExchange internal EXCHANGE; - IEtherToken internal ETHER_TOKEN; - IERC20Token internal ZRX_TOKEN; - bytes internal ZRX_ASSET_DATA; - bytes internal WETH_ASSET_DATA; - // solhint-enable var-name-mixedcase - - constructor ( - address _exchange, - bytes memory _zrxAssetData, - bytes memory _wethAssetData - ) - public - { - EXCHANGE = IExchange(_exchange); - ZRX_ASSET_DATA = _zrxAssetData; - WETH_ASSET_DATA = _wethAssetData; - - address etherToken = _wethAssetData.readAddress(16); - address zrxToken = _zrxAssetData.readAddress(16); - ETHER_TOKEN = IEtherToken(etherToken); - ZRX_TOKEN = IERC20Token(zrxToken); - } -} diff --git a/packages/contracts/src/2.0.0/forwarder/libs/LibForwarderErrors.sol b/packages/contracts/src/2.0.0/forwarder/libs/LibForwarderErrors.sol deleted file mode 100644 index cdfb77a0b..000000000 --- a/packages/contracts/src/2.0.0/forwarder/libs/LibForwarderErrors.sol +++ /dev/null @@ -1,34 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -// solhint-disable -pragma solidity 0.4.24; - - -/// This contract is intended to serve as a reference, but is not actually used for efficiency reasons. -contract LibForwarderErrors { - string constant FEE_PERCENTAGE_TOO_LARGE = "FEE_PROPORTION_TOO_LARGE"; // Provided fee percentage greater than 5%. - string constant INSUFFICIENT_ETH_REMAINING = "INSUFFICIENT_ETH_REMAINING"; // Not enough ETH remaining to pay feeRecipient. - string constant OVERSOLD_WETH = "OVERSOLD_WETH"; // More WETH sold than provided with current message call. - string constant COMPLETE_FILL_FAILED = "COMPLETE_FILL_FAILED"; // Desired purchase amount not completely filled (required for ZRX fees only). - string constant TRANSFER_FAILED = "TRANSFER_FAILED"; // Asset transfer failed. - string constant UNSUPPORTED_TOKEN_PROXY = "UNSUPPORTED_TOKEN_PROXY"; // Proxy in assetData not supported. - string constant DEFAULT_FUNCTION_WETH_CONTRACT_ONLY = "DEFAULT_FUNCTION_WETH_CONTRACT_ONLY"; // Fallback function may only be used for WETH withdrawals. - string constant INVALID_MSG_VALUE = "INVALID_MSG_VALUE"; // msg.value must be greater than 0. - string constant INVALID_AMOUNT = "INVALID_AMOUNT"; // Amount must equal 1. -} diff --git a/packages/contracts/src/2.0.0/forwarder/mixins/MAssets.sol b/packages/contracts/src/2.0.0/forwarder/mixins/MAssets.sol deleted file mode 100644 index 83636432a..000000000 --- a/packages/contracts/src/2.0.0/forwarder/mixins/MAssets.sol +++ /dev/null @@ -1,54 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../interfaces/IAssets.sol"; - - -contract MAssets is - IAssets -{ - - /// @dev Transfers given amount of asset to sender. - /// @param assetData Byte array encoded for the respective asset proxy. - /// @param amount Amount of asset to transfer to sender. - function transferAssetToSender( - bytes memory assetData, - uint256 amount - ) - internal; - - /// @dev Decodes ERC20 assetData and transfers given amount to sender. - /// @param assetData Byte array encoded for the respective asset proxy. - /// @param amount Amount of asset to transfer to sender. - function transferERC20Token( - bytes memory assetData, - uint256 amount - ) - internal; - - /// @dev Decodes ERC721 assetData and transfers given amount to sender. - /// @param assetData Byte array encoded for the respective asset proxy. - /// @param amount Amount of asset to transfer to sender. - function transferERC721Token( - bytes memory assetData, - uint256 amount - ) - internal; -} diff --git a/packages/contracts/src/2.0.0/forwarder/mixins/MExchangeWrapper.sol b/packages/contracts/src/2.0.0/forwarder/mixins/MExchangeWrapper.sol deleted file mode 100644 index 360dea0e4..000000000 --- a/packages/contracts/src/2.0.0/forwarder/mixins/MExchangeWrapper.sol +++ /dev/null @@ -1,87 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "../../protocol/Exchange/libs/LibOrder.sol"; -import "../../protocol/Exchange/libs/LibFillResults.sol"; - - -contract MExchangeWrapper { - - /// @dev Fills the input order. - /// Returns false if the transaction would otherwise revert. - /// @param order Order struct containing order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param signature Proof that order has been created by maker. - /// @return Amounts filled and fees paid by maker and taker. - function fillOrderNoThrow( - LibOrder.Order memory order, - uint256 takerAssetFillAmount, - bytes memory signature - ) - internal - returns (LibFillResults.FillResults memory fillResults); - - /// @dev Synchronously executes multiple calls of fillOrder until total amount of WETH has been sold by taker. - /// Returns false if the transaction would otherwise revert. - /// @param orders Array of order specifications. - /// @param wethSellAmount Desired amount of WETH to sell. - /// @param signatures Proofs that orders have been signed by makers. - /// @return Amounts filled and fees paid by makers and taker. - function marketSellWeth( - LibOrder.Order[] memory orders, - uint256 wethSellAmount, - bytes[] memory signatures - ) - internal - returns (LibFillResults.FillResults memory totalFillResults); - - /// @dev Synchronously executes multiple fill orders in a single transaction until total amount is bought by taker. - /// Returns false if the transaction would otherwise revert. - /// The asset being sold by taker must always be WETH. - /// @param orders Array of order specifications. - /// @param makerAssetFillAmount Desired amount of makerAsset to buy. - /// @param signatures Proofs that orders have been signed by makers. - /// @return Amounts filled and fees paid by makers and taker. - function marketBuyExactAmountWithWeth( - LibOrder.Order[] memory orders, - uint256 makerAssetFillAmount, - bytes[] memory signatures - ) - internal - returns (LibFillResults.FillResults memory totalFillResults); - - /// @dev Buys zrxBuyAmount of ZRX fee tokens, taking into account ZRX fees for each order. This will guarantee - /// that at least zrxBuyAmount of ZRX is purchased (sometimes slightly over due to rounding issues). - /// It is possible that a request to buy 200 ZRX will require purchasing 202 ZRX - /// as 2 ZRX is required to purchase the 200 ZRX fee tokens. This guarantees at least 200 ZRX for future purchases. - /// The asset being sold by taker must always be WETH. - /// @param orders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. - /// @param zrxBuyAmount Desired amount of ZRX to buy. - /// @param signatures Proofs that orders have been created by makers. - /// @return totalFillResults Amounts filled and fees paid by maker and taker. - function marketBuyExactZrxWithWeth( - LibOrder.Order[] memory orders, - uint256 zrxBuyAmount, - bytes[] memory signatures - ) - internal - returns (LibFillResults.FillResults memory totalFillResults); -} diff --git a/packages/contracts/src/2.0.0/forwarder/mixins/MWeth.sol b/packages/contracts/src/2.0.0/forwarder/mixins/MWeth.sol deleted file mode 100644 index 88e77be4e..000000000 --- a/packages/contracts/src/2.0.0/forwarder/mixins/MWeth.sol +++ /dev/null @@ -1,41 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - - -contract MWeth { - - /// @dev Converts message call's ETH value into WETH. - function convertEthToWeth() - internal; - - /// @dev Transfers feePercentage of WETH spent on primary orders to feeRecipient. - /// Refunds any excess ETH to msg.sender. - /// @param wethSoldExcludingFeeOrders Amount of WETH sold when filling primary orders. - /// @param wethSoldForZrx Amount of WETH sold when purchasing ZRX required for primary order fees. - /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient. - /// @param feeRecipient Address that will receive ETH when orders are filled. - function transferEthFeeAndRefund( - uint256 wethSoldExcludingFeeOrders, - uint256 wethSoldForZrx, - uint256 feePercentage, - address feeRecipient - ) - internal; -} -- cgit v1.2.3 From 0918f954219199cb6ee5efd29a296c1f412b2888 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Sun, 19 Aug 2018 20:03:59 -0700 Subject: Don't throw if ERC721 token isn't owned --- .../extensions/OrderValidator/OrderValidator.sol | 52 +++++++++++++++++++++- 1 file changed, 51 insertions(+), 1 deletion(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol b/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol index dcbbd7fa5..1c9cc6978 100644 --- a/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol +++ b/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol @@ -124,17 +124,67 @@ contract OrderValidator { address assetProxy = EXCHANGE.getAssetProxy(assetProxyId); if (assetProxyId == ERC20_DATA_ID) { + // Query balance balance = IERC20Token(token).balanceOf(target); + + // Query allowance allowance = IERC20Token(token).allowance(target, assetProxy); } else if (assetProxyId == ERC721_DATA_ID) { uint256 tokenId = assetData.readUint256(36); - address owner = IERC721Token(token).ownerOf(tokenId); + + // Query owner of tokenId + address owner = getERC721TokenOwner(token, tokenId); + + // Set balance to 1 if tokenId is owned by target balance = target == owner ? 1 : 0; + + // Check if ERC721Proxy is approved to spend tokenId bool isApproved = IERC721Token(token).isApprovedForAll(target, assetProxy) || IERC721Token(token).getApproved(tokenId) == assetProxy; + + // Set alowance to 1 if ERC721Proxy is approved to spend tokenId allowance = isApproved ? 1 : 0; } else { revert("UNSUPPORTED_ASSET_PROXY"); } return (balance, allowance); } + + /// @dev Calls `token.ownerOf(tokenId)`, but returns a null owner instead of reverting on an unowned token. + /// @param token Address of ERC721 token. + /// @param tokenId The identifier for the specific NFT. + /// @return Owner of tokenId or null address if unowned. + function getERC721TokenOwner(address token, uint256 tokenId) + public + view + returns (address owner) + { + assembly { + // load free memory pointer + let cdStart := mload(64) + + // bytes4(keccak256(ownerOf(uint256))) = 0x6352211e + mstore(cdStart, 0x6352211e00000000000000000000000000000000000000000000000000000000) + mstore(add(cdStart, 4), tokenId) + + // staticcall `ownerOf(tokenId)` + // `ownerOf` will revert if tokenId is not owned + let success := staticcall( + gas, // forward all gas + token, // call token contract + cdStart, // start of calldata + 36, // length of input is 36 bytes + cdStart, // write output over input + 32 // size of output is 32 bytes + ) + + // Success implies that tokenId is owned + // Copy owner from return data if successful + if success { + owner := mload(cdStart) + } + } + + // Owner initialized to address(0), no need to modify if call is unsuccessful + return owner; + } } -- cgit v1.2.3 From 7fa5b474ebac649b6a23c8b9108e07c117dcc00b Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Tue, 21 Aug 2018 10:15:45 -0700 Subject: Add ZRX balances and allowances to TraderInfo --- .../extensions/OrderValidator/OrderValidator.sol | 23 +++++++++++++++------- 1 file changed, 16 insertions(+), 7 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol b/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol index 1c9cc6978..8f4ce9ccc 100644 --- a/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol +++ b/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol @@ -34,20 +34,26 @@ contract OrderValidator { using LibBytes for bytes; struct TraderInfo { - uint256 makerBalance; // Maker's balance of makerAsset - uint256 makerAllowance; // Maker's allowance to corresponding AssetProxy - uint256 takerBalance; // Taker's balance of takerAsset - uint256 takerAllowance; // Taker's allowance to corresponding AssetProxy + uint256 makerBalance; // Maker's balance of makerAsset + uint256 makerAllowance; // Maker's allowance to corresponding AssetProxy + uint256 takerBalance; // Taker's balance of takerAsset + uint256 takerAllowance; // Taker's allowance to corresponding AssetProxy + uint256 makerZrxBalance; // Maker's balance of ZRX + uint256 makerZrxAllowance; // Maker's allowance of ZRX to ERC20Proxy + uint256 takerZrxBalance; // Taker's balance of ZRX + uint256 takerZrxAllowance; // Taker's allowance of ZRX to ERC20Proxy } - // Exchange contract. - // solhint-disable-next-line var-name-mixedcase + // solhint-disable var-name-mixedcase IExchange internal EXCHANGE; + bytes internal ZRX_ASSET_DATA; + // solhint-enable var-name-mixedcase - constructor (address _exchange) + constructor (address _exchange, bytes memory _zrxAssetData) public { EXCHANGE = IExchange(_exchange); + ZRX_ASSET_DATA = _zrxAssetData; } /// @dev Fetches information for order and maker/taker of order. @@ -89,6 +95,9 @@ contract OrderValidator { { (traderInfo.makerBalance, traderInfo.makerAllowance) = getBalanceAndAllowance(order.makerAddress, order.makerAssetData); (traderInfo.takerBalance, traderInfo.takerAllowance) = getBalanceAndAllowance(takerAddress, order.takerAssetData); + bytes memory zrxAssetData = ZRX_ASSET_DATA; + (traderInfo.makerZrxBalance, traderInfo.makerZrxAllowance) = getBalanceAndAllowance(order.makerAddress, zrxAssetData); + (traderInfo.takerZrxBalance, traderInfo.takerZrxAllowance) = getBalanceAndAllowance(takerAddress, zrxAssetData); return traderInfo; } -- cgit v1.2.3 From 3760eb5bafcc0980b3a42dd5f10e745390702b16 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Tue, 21 Aug 2018 18:14:22 -0700 Subject: Add getBalancesAndAllowances --- .../extensions/OrderValidator/OrderValidator.sol | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol b/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol index 8f4ce9ccc..a18345245 100644 --- a/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol +++ b/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol @@ -158,6 +158,25 @@ contract OrderValidator { return (balance, allowance); } + /// @dev Fetches token balances and allowances of an address for each given assetProxy. Supports ERC20 and ERC721. + /// @param target Address to fetch balances and allowances of. + /// @param assetData Array of encoded byte arrays that can be decoded by a specified proxy contract when transferring asset. + /// @return Balances and allowances of assets. + /// For ERC721 tokens, these values will always be 1 or 0. + function getBalancesAndAllowances(address target, bytes[] memory assetData) + public + view + returns (uint256[] memory, uint256[] memory) + { + uint256 length = assetData.length; + uint256[] memory balances = new uint256[](length); + uint256[] memory allowances = new uint256[](length); + for (uint256 i = 0; i != length; i++) { + (balances[i], allowances[i]) = getBalanceAndAllowance(target, assetData[i]); + } + return (balances, allowances); + } + /// @dev Calls `token.ownerOf(tokenId)`, but returns a null owner instead of reverting on an unowned token. /// @param token Address of ERC721 token. /// @param tokenId The identifier for the specific NFT. -- cgit v1.2.3 From c5f8b9c2d2b1eed5789b40c4df07e98afe0431ab Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Thu, 23 Aug 2018 17:25:22 -0700 Subject: Add pragma experimental v0.5.0 to SignatureValidator and add tests --- .../protocol/Exchange/MixinSignatureValidator.sol | 1 + .../TestSignatureValidator.sol | 1 + .../2.0.0/test/TestStaticCall/TestStaticCall.sol | 64 ++++++++++++++++++++++ 3 files changed, 66 insertions(+) create mode 100644 packages/contracts/src/2.0.0/test/TestStaticCall/TestStaticCall.sol (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol index 44de54817..fd655e757 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol @@ -17,6 +17,7 @@ */ pragma solidity 0.4.24; +pragma experimental "v0.5.0"; import "../../utils/LibBytes/LibBytes.sol"; import "./mixins/MSignatureValidator.sol"; diff --git a/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol b/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol index e1a610469..3845b7b9e 100644 --- a/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol +++ b/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol @@ -17,6 +17,7 @@ */ pragma solidity 0.4.24; +pragma experimental "v0.5.0"; import "../../protocol/Exchange/MixinSignatureValidator.sol"; import "../../protocol/Exchange/MixinTransactions.sol"; diff --git a/packages/contracts/src/2.0.0/test/TestStaticCall/TestStaticCall.sol b/packages/contracts/src/2.0.0/test/TestStaticCall/TestStaticCall.sol new file mode 100644 index 000000000..be24e2f37 --- /dev/null +++ b/packages/contracts/src/2.0.0/test/TestStaticCall/TestStaticCall.sol @@ -0,0 +1,64 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.24; + + +contract TestStaticCall { + + uint256 internal state = 1; + + /// @dev Updates state and returns true. Intended to be used with `Validator` signature type. + /// @param hash Message hash that is signed. + /// @param signerAddress Address that should have signed the given hash. + /// @param signature Proof of signing. + /// @return Validity of order signature. + function isValidSignature( + bytes32 hash, + address signerAddress, + bytes signature + ) + external + returns (bool isValid) + { + updateState(); + return true; + } + + /// @dev Updates state and returns true. Intended to be used with `Wallet` signature type. + /// @param hash Message hash that is signed. + /// @param signature Proof of signing. + /// @return Validity of order signature. + function isValidSignature( + bytes32 hash, + bytes signature + ) + external + returns (bool isValid) + { + updateState(); + return true; + } + + /// @dev Increments state variable. + function updateState() + internal + { + state++; + } +} -- cgit v1.2.3 From 0a1ae2c31139e446b2fb3b7f03caf371c6668ae2 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Fri, 24 Aug 2018 00:19:06 -0700 Subject: Remove pragma experimental v0.5.0 and use staticcall is assembly --- .../protocol/Exchange/MixinSignatureValidator.sol | 84 +++++++++++++++++++++- .../Exchange/mixins/MSignatureValidator.sol | 31 ++++++++ .../TestSignatureValidator.sol | 1 - .../2.0.0/test/TestStaticCall/TestStaticCall.sol | 16 +++++ 4 files changed, 128 insertions(+), 4 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol index fd655e757..6bfbb5107 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol @@ -17,7 +17,6 @@ */ pragma solidity 0.4.24; -pragma experimental "v0.5.0"; import "../../utils/LibBytes/LibBytes.sol"; import "./mixins/MSignatureValidator.sol"; @@ -192,7 +191,11 @@ contract MixinSignatureValidator is // Signature verified by wallet contract. // If used with an order, the maker of the order is the wallet contract. } else if (signatureType == SignatureType.Wallet) { - isValid = IWallet(signerAddress).isValidSignature(hash, signature); + isValid = isValidWalletSignature( + hash, + signerAddress, + signature + ); return isValid; // Signature verified by validator contract. @@ -210,7 +213,8 @@ contract MixinSignatureValidator is if (!allowedValidators[signerAddress][validatorAddress]) { return false; } - isValid = IValidator(validatorAddress).isValidSignature( + isValid = isValidValidatorSignature( + validatorAddress, hash, signerAddress, signature @@ -258,4 +262,78 @@ contract MixinSignatureValidator is // signature was invalid.) revert("SIGNATURE_UNSUPPORTED"); } + + /// @dev Verifies signature using logic defined by Wallet contract. + /// @param hash Any 32 byte hash. + /// @param walletAddress Address that should have signed the given hash + /// and defines its own signature verification method. + /// @param signature Proof that the hash has been signed by signer. + /// @return True if signature is valid for given wallet.. + function isValidWalletSignature( + bytes32 hash, + address walletAddress, + bytes signature + ) + internal + view + returns (bool isValid) + { + bytes memory calldata = abi.encodeWithSelector( + IWallet(walletAddress).isValidSignature.selector, + hash, + signature + ); + assembly { + let cdStart := add(calldata, 32) + let success := staticcall( + gas, // forward all gas + walletAddress, // address of Wallet contract + cdStart, // pointer to start of input + mload(calldata), // length of input + cdStart, // write input over output + 32 // output size is 32 bytes + ) + // Signature is valid if call did not revert and returned true + isValid := and(success, mload(cdStart)) + } + return isValid; + } + + /// @dev Verifies signature using logic defined by Validator contract. + /// @param validatorAddress Address of validator contract. + /// @param hash Any 32 byte hash. + /// @param signerAddress Address that should have signed the given hash. + /// @param signature Proof that the hash has been signed by signer. + /// @return True if the address recovered from the provided signature matches the input signer address. + function isValidValidatorSignature( + address validatorAddress, + bytes32 hash, + address signerAddress, + bytes signature + ) + internal + view + returns (bool isValid) + { + bytes memory calldata = abi.encodeWithSelector( + IValidator(signerAddress).isValidSignature.selector, + hash, + signerAddress, + signature + ); + assembly { + let cdStart := add(calldata, 32) + let success := staticcall( + gas, // forward all gas + validatorAddress, // address of Validator contract + cdStart, // pointer to start of input + mload(calldata), // length of input + cdStart, // write input over output + 32 // output size is 32 bytes + ) + // Signature is valid if call did not revert and returned true + isValid := and(success, mload(cdStart)) + } + return isValid; + } } diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol index f14f2ba00..75fe9ec46 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol @@ -43,4 +43,35 @@ contract MSignatureValidator is Trezor, // 0x08 NSignatureTypes // 0x09, number of signature types. Always leave at end. } + + /// @dev Verifies signature using logic defined by Wallet contract. + /// @param hash Any 32 byte hash. + /// @param walletAddress Address that should have signed the given hash + /// and defines its own signature verification method. + /// @param signature Proof that the hash has been signed by signer. + /// @return True if the address recovered from the provided signature matches the input signer address. + function isValidWalletSignature( + bytes32 hash, + address walletAddress, + bytes signature + ) + internal + view + returns (bool isValid); + + /// @dev Verifies signature using logic defined by Validator contract. + /// @param validatorAddress Address of validator contract. + /// @param hash Any 32 byte hash. + /// @param signerAddress Address that should have signed the given hash. + /// @param signature Proof that the hash has been signed by signer. + /// @return True if the address recovered from the provided signature matches the input signer address. + function isValidValidatorSignature( + address validatorAddress, + bytes32 hash, + address signerAddress, + bytes signature + ) + internal + view + returns (bool isValid); } diff --git a/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol b/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol index 3845b7b9e..e1a610469 100644 --- a/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol +++ b/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol @@ -17,7 +17,6 @@ */ pragma solidity 0.4.24; -pragma experimental "v0.5.0"; import "../../protocol/Exchange/MixinSignatureValidator.sol"; import "../../protocol/Exchange/MixinTransactions.sol"; diff --git a/packages/contracts/src/2.0.0/test/TestStaticCall/TestStaticCall.sol b/packages/contracts/src/2.0.0/test/TestStaticCall/TestStaticCall.sol index be24e2f37..5a9581f51 100644 --- a/packages/contracts/src/2.0.0/test/TestStaticCall/TestStaticCall.sol +++ b/packages/contracts/src/2.0.0/test/TestStaticCall/TestStaticCall.sol @@ -18,6 +18,8 @@ pragma solidity 0.4.24; +import "../../tokens/ERC20Token/IERC20Token.sol"; + contract TestStaticCall { @@ -55,6 +57,20 @@ contract TestStaticCall { return true; } + /// @dev Approves an ERC20 token to spend tokens from this address. + /// @param token Address of ERC20 token. + /// @param spender Address that will spend tokens. + /// @param value Amount of tokens spender is approved to spend. + function approveERC20( + address token, + address spender, + uint256 value + ) + external + { + IERC20Token(token).approve(spender, value); + } + /// @dev Increments state variable. function updateState() internal -- cgit v1.2.3 From 681ed822eca91085300e85e136ddcf4abd90495c Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Fri, 24 Aug 2018 09:24:33 -0700 Subject: Revert if undefined function called in AssetProxies --- packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol | 3 +++ packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol | 3 +++ 2 files changed, 6 insertions(+) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol b/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol index b5cec6b64..004c3892d 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol @@ -118,6 +118,9 @@ contract ERC20Proxy is mstore(96, 0) revert(0, 100) } + + // Revert if undefined function is called + revert(0, 0) } } diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol b/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol index 6a70c9f60..9d0bc0f74 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol @@ -152,6 +152,9 @@ contract ERC721Proxy is mstore(96, 0) revert(0, 100) } + + // Revert if undefined function is called + revert(0, 0) } } -- cgit v1.2.3 From 070eff6f3a2f3775ef72248c3f345c05cd833798 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Fri, 24 Aug 2018 09:27:29 -0700 Subject: Rename TestStaticCall => TestStaticCallReceiver --- .../2.0.0/test/TestStaticCall/TestStaticCall.sol | 80 --------------------- .../TestStaticCallReceiver.sol | 81 ++++++++++++++++++++++ 2 files changed, 81 insertions(+), 80 deletions(-) delete mode 100644 packages/contracts/src/2.0.0/test/TestStaticCall/TestStaticCall.sol create mode 100644 packages/contracts/src/2.0.0/test/TestStaticCallReceiver/TestStaticCallReceiver.sol (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/test/TestStaticCall/TestStaticCall.sol b/packages/contracts/src/2.0.0/test/TestStaticCall/TestStaticCall.sol deleted file mode 100644 index 5a9581f51..000000000 --- a/packages/contracts/src/2.0.0/test/TestStaticCall/TestStaticCall.sol +++ /dev/null @@ -1,80 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../tokens/ERC20Token/IERC20Token.sol"; - - -contract TestStaticCall { - - uint256 internal state = 1; - - /// @dev Updates state and returns true. Intended to be used with `Validator` signature type. - /// @param hash Message hash that is signed. - /// @param signerAddress Address that should have signed the given hash. - /// @param signature Proof of signing. - /// @return Validity of order signature. - function isValidSignature( - bytes32 hash, - address signerAddress, - bytes signature - ) - external - returns (bool isValid) - { - updateState(); - return true; - } - - /// @dev Updates state and returns true. Intended to be used with `Wallet` signature type. - /// @param hash Message hash that is signed. - /// @param signature Proof of signing. - /// @return Validity of order signature. - function isValidSignature( - bytes32 hash, - bytes signature - ) - external - returns (bool isValid) - { - updateState(); - return true; - } - - /// @dev Approves an ERC20 token to spend tokens from this address. - /// @param token Address of ERC20 token. - /// @param spender Address that will spend tokens. - /// @param value Amount of tokens spender is approved to spend. - function approveERC20( - address token, - address spender, - uint256 value - ) - external - { - IERC20Token(token).approve(spender, value); - } - - /// @dev Increments state variable. - function updateState() - internal - { - state++; - } -} diff --git a/packages/contracts/src/2.0.0/test/TestStaticCallReceiver/TestStaticCallReceiver.sol b/packages/contracts/src/2.0.0/test/TestStaticCallReceiver/TestStaticCallReceiver.sol new file mode 100644 index 000000000..41aab01c8 --- /dev/null +++ b/packages/contracts/src/2.0.0/test/TestStaticCallReceiver/TestStaticCallReceiver.sol @@ -0,0 +1,81 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.24; + +import "../../tokens/ERC20Token/IERC20Token.sol"; + + +// solhint-disable no-unused-vars +contract TestStaticCallReceiver { + + uint256 internal state = 1; + + /// @dev Updates state and returns true. Intended to be used with `Validator` signature type. + /// @param hash Message hash that is signed. + /// @param signerAddress Address that should have signed the given hash. + /// @param signature Proof of signing. + /// @return Validity of order signature. + function isValidSignature( + bytes32 hash, + address signerAddress, + bytes signature + ) + external + returns (bool isValid) + { + updateState(); + return true; + } + + /// @dev Updates state and returns true. Intended to be used with `Wallet` signature type. + /// @param hash Message hash that is signed. + /// @param signature Proof of signing. + /// @return Validity of order signature. + function isValidSignature( + bytes32 hash, + bytes signature + ) + external + returns (bool isValid) + { + updateState(); + return true; + } + + /// @dev Approves an ERC20 token to spend tokens from this address. + /// @param token Address of ERC20 token. + /// @param spender Address that will spend tokens. + /// @param value Amount of tokens spender is approved to spend. + function approveERC20( + address token, + address spender, + uint256 value + ) + external + { + IERC20Token(token).approve(spender, value); + } + + /// @dev Increments state variable. + function updateState() + internal + { + state++; + } +} -- cgit v1.2.3 From 92497d7df4b61ee62acfdd58bfb98569ff67214e Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Thu, 23 Aug 2018 11:01:52 -0700 Subject: Fix isRoundingError --- .../src/2.0.0/protocol/Exchange/libs/LibMath.sol | 27 ++++++++++++++-------- 1 file changed, 17 insertions(+), 10 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol index fa09da6ac..146bb9943 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol @@ -46,7 +46,7 @@ contract LibMath is return partialAmount; } - /// @dev Checks if rounding error > 0.1%. + /// @dev Checks if rounding error >= 0.1%. /// @param numerator Numerator. /// @param denominator Denominator. /// @param target Value to multiply with numerator/denominator. @@ -60,16 +60,23 @@ contract LibMath is pure returns (bool isError) { + // The absolute rounding error is the difference between the rounded + // value and the ideal value. The relative rounding error is the + // absolute rounding error divided by the absolute value of the + // ideal value. We want the relative rounding error to be strictly less + // than 0.1%. + // Let's call `numerator * target % denominator` the remainder. + // The ideal value is `numerator * target / denominator`. + // The absolute error is `remainder / denominator`. + // The relative error is `remainder / numerator * target`. + // We want the relative error less than 1 / 1000: + // remainder / numerator * denominator < 1 / 1000 + // or equivalently: + // 1000 * remainder < numerator * target + // so we have a rounding error iff: + // 1000 * remainder >= numerator * target uint256 remainder = mulmod(target, numerator, denominator); - if (remainder == 0) { - return false; // No rounding error. - } - - uint256 errPercentageTimes1000000 = safeDiv( - safeMul(remainder, 1000000), - safeMul(numerator, target) - ); - isError = errPercentageTimes1000000 > 1000; + isError = safeMul(1000, remainder) >= safeMul(numerator, target); return isError; } } -- cgit v1.2.3 From e68942ee78eb19c27a96fb0b6b8b05c83b647bcc Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Thu, 23 Aug 2018 12:54:39 -0700 Subject: Handle zero case --- .../src/2.0.0/protocol/Exchange/libs/LibMath.sol | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol index 146bb9943..758b7ec90 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol @@ -60,14 +60,26 @@ contract LibMath is pure returns (bool isError) { + require(denominator > 0, "DIVISION_BY_ZERO"); + // The absolute rounding error is the difference between the rounded // value and the ideal value. The relative rounding error is the // absolute rounding error divided by the absolute value of the - // ideal value. We want the relative rounding error to be strictly less - // than 0.1%. - // Let's call `numerator * target % denominator` the remainder. + // ideal value. This is undefined when the ideal value is zero. + // // The ideal value is `numerator * target / denominator`. + // Let's call `numerator * target % denominator` the remainder. // The absolute error is `remainder / denominator`. + // + // When the ideal value is zero, we require the absolute error to + // be zero. Fortunately, this is always the case. The ideal value is + // zero iff `numerator == 0` and/or `target == 0`. In this case the + // remainder and absolute error are also zero. + if (target == 0 || numerator == 0) { + return false; + } + // Otherwise, we want the relative rounding error to be strictly + // less than 0.1%. // The relative error is `remainder / numerator * target`. // We want the relative error less than 1 / 1000: // remainder / numerator * denominator < 1 / 1000 -- cgit v1.2.3 From 6a9669a409a61c4645af43f39a4e4a0761354e32 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Fri, 24 Aug 2018 14:06:46 -0700 Subject: Rethrow Wallet and Validator errors --- .../protocol/Exchange/MixinSignatureValidator.sol | 32 +++++++++++++++++++--- 1 file changed, 28 insertions(+), 4 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol index 6bfbb5107..017da742e 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol @@ -293,8 +293,20 @@ contract MixinSignatureValidator is cdStart, // write input over output 32 // output size is 32 bytes ) - // Signature is valid if call did not revert and returned true - isValid := and(success, mload(cdStart)) + + switch success + case 0 { + // Revert with `Error("WALLET_ERROR")` + mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000) + mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000) + mstore(64, 0x0000000c57414c4c45545f4552524f5200000000000000000000000000000000) + mstore(96, 0) + revert(0, 100) + } + case 1 { + // Signature is valid if call did not revert and returned true + isValid := mload(cdStart) + } } return isValid; } @@ -331,8 +343,20 @@ contract MixinSignatureValidator is cdStart, // write input over output 32 // output size is 32 bytes ) - // Signature is valid if call did not revert and returned true - isValid := and(success, mload(cdStart)) + + switch success + case 0 { + // Revert with `Error("VALIDATOR_ERROR")` + mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000) + mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000) + mstore(64, 0x0000000f56414c494441544f525f4552524f5200000000000000000000000000) + mstore(96, 0) + revert(0, 100) + } + case 1 { + // Signature is valid if call did not revert and returned true + isValid := mload(cdStart) + } } return isValid; } -- cgit v1.2.3 From ab5df342e1dc4add20223fab7128f9323a114b8e Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Wed, 22 Aug 2018 12:22:49 -0700 Subject: Add getPartialAmountCeil --- .../src/2.0.0/protocol/Exchange/libs/LibMath.sol | 35 ++++++++++++++++++++-- 1 file changed, 32 insertions(+), 3 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol index 758b7ec90..3e70d1b60 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol @@ -29,7 +29,7 @@ contract LibMath is /// @param numerator Numerator. /// @param denominator Denominator. /// @param target Value to calculate partial of. - /// @return Partial value of target. + /// @return Partial value of target rounded down. function getPartialAmount( uint256 numerator, uint256 denominator, @@ -45,8 +45,37 @@ contract LibMath is ); return partialAmount; } - - /// @dev Checks if rounding error >= 0.1%. + + /// @dev Calculates partial value given a numerator and denominator. + /// @param numerator Numerator. + /// @param denominator Denominator. + /// @param target Value to calculate partial of. + /// @return Partial value of target rounded up. + function getPartialAmountCeil( + uint256 numerator, + uint256 denominator, + uint256 target + ) + internal + pure + returns (uint256 partialAmount) + { + require( + denominator > 0, + "DIVISION_BY_ZERO" + ); + + // SafeDiv rounds down. To use it to round up we need to add + // denominator - 1. This causes anything less than an exact multiple + // of denominator to be rounded up. + partialAmount = safeDiv( + safeAdd(safeMul(numerator, target), safeSub(denominator, 1)), + denominator + ); + return partialAmount; + } + + /// @dev Checks if rounding error > 0.1%. /// @param numerator Numerator. /// @param denominator Denominator. /// @param target Value to multiply with numerator/denominator. -- cgit v1.2.3 From 5d70df771b151800b8a04b5569529843701c9fbd Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Wed, 22 Aug 2018 12:22:58 -0700 Subject: Add isRoundingErrorCeil --- .../src/2.0.0/protocol/Exchange/libs/LibMath.sol | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol index 3e70d1b60..c4aa2abb5 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol @@ -107,6 +107,7 @@ contract LibMath is if (target == 0 || numerator == 0) { return false; } + // Otherwise, we want the relative rounding error to be strictly // less than 0.1%. // The relative error is `remainder / numerator * target`. @@ -120,4 +121,32 @@ contract LibMath is isError = safeMul(1000, remainder) >= safeMul(numerator, target); return isError; } + + /// @dev Checks if rounding error > 0.1%. + /// @param numerator Numerator. + /// @param denominator Denominator. + /// @param target Value to multiply with numerator/denominator. + /// @return Rounding error is present. + function isRoundingErrorCeil( + uint256 numerator, + uint256 denominator, + uint256 target + ) + internal + pure + returns (bool isError) + { + require(denominator > 0, "DIVISION_BY_ZERO"); + + if (target == 0 || numerator == 0) { + return false; + } + uint256 remainder = mulmod(target, numerator, denominator); + if (remainder == 0) { + return false; + } + remainder = safeSub(denominator, remainder); + isError = safeMul(1000, remainder) >= safeMul(numerator, target); + return isError; + } } -- cgit v1.2.3 From 3dad6ee55e9f51daa66cfe3c83dd17abc31f23f5 Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Wed, 22 Aug 2018 12:23:32 -0700 Subject: Add tests for getPartialAmountCeil --- .../TestExchangeInternals/TestExchangeInternals.sol | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol b/packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol index d9cec9edc..239dd10a8 100644 --- a/packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol +++ b/packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol @@ -79,6 +79,23 @@ contract TestExchangeInternals is return getPartialAmount(numerator, denominator, target); } + /// @dev Calculates partial value given a numerator and denominator. + /// @param numerator Numerator. + /// @param denominator Denominator. + /// @param target Value to calculate partial of. + /// @return Partial value of target. + function publicGetPartialAmountCeil( + uint256 numerator, + uint256 denominator, + uint256 target + ) + public + pure + returns (uint256 partialAmount) + { + return getPartialAmountCeil(numerator, denominator, target); + } + /// @dev Checks if rounding error > 0.1%. /// @param numerator Numerator. /// @param denominator Denominator. -- cgit v1.2.3 From 50fab9feb3b80b7d5ac1e94df9af68cad4aaabe0 Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Wed, 22 Aug 2018 12:22:58 -0700 Subject: Improve getPartialAmountCeil docs --- packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol index c4aa2abb5..d123c55a1 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol @@ -65,9 +65,9 @@ contract LibMath is "DIVISION_BY_ZERO" ); - // SafeDiv rounds down. To use it to round up we need to add - // denominator - 1. This causes anything less than an exact multiple - // of denominator to be rounded up. + // safeDiv computes `floor(a / b)`. We use the identity (a, b integer): + // ceil(a / b) = floor((a + b - 1) / b) + // To implement `ceil(a / b)` using safeDiv. partialAmount = safeDiv( safeAdd(safeMul(numerator, target), safeSub(denominator, 1)), denominator -- cgit v1.2.3 From 4219af1430f1cfc105d3521616941b7947fde4e3 Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Thu, 23 Aug 2018 14:22:59 -0700 Subject: Add DIVISION_BY_ZERO to getPartialAmount for consistency --- packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol index d123c55a1..f4e2f1958 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol @@ -39,6 +39,8 @@ contract LibMath is pure returns (uint256 partialAmount) { + require(denominator > 0, "DIVISION_BY_ZERO"); + partialAmount = safeDiv( safeMul(numerator, target), denominator @@ -60,10 +62,7 @@ contract LibMath is pure returns (uint256 partialAmount) { - require( - denominator > 0, - "DIVISION_BY_ZERO" - ); + require(denominator > 0, "DIVISION_BY_ZERO"); // safeDiv computes `floor(a / b)`. We use the identity (a, b integer): // ceil(a / b) = floor((a + b - 1) / b) -- cgit v1.2.3 From 0fb7617a785b765415cb7f43448c9b8ea905963f Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Thu, 23 Aug 2018 15:18:45 -0700 Subject: Fix incorect modulus --- packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol index f4e2f1958..1c14dbcae 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol @@ -141,10 +141,8 @@ contract LibMath is return false; } uint256 remainder = mulmod(target, numerator, denominator); - if (remainder == 0) { - return false; - } - remainder = safeSub(denominator, remainder); + // TODO: safeMod + remainder = safeSub(denominator, remainder) % denominator; isError = safeMul(1000, remainder) >= safeMul(numerator, target); return isError; } -- cgit v1.2.3 From 6734f2f1bcdab8f0d50524a26195707da00bd8ed Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Thu, 23 Aug 2018 15:18:55 -0700 Subject: Add docs --- packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol index 1c14dbcae..8a1444af1 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol @@ -74,7 +74,7 @@ contract LibMath is return partialAmount; } - /// @dev Checks if rounding error > 0.1%. + /// @dev Checks if rounding error >= 0.1% when rounding down. /// @param numerator Numerator. /// @param denominator Denominator. /// @param target Value to multiply with numerator/denominator. @@ -121,7 +121,7 @@ contract LibMath is return isError; } - /// @dev Checks if rounding error > 0.1%. + /// @dev Checks if rounding error >= 0.1% when rounding up. /// @param numerator Numerator. /// @param denominator Denominator. /// @param target Value to multiply with numerator/denominator. @@ -137,9 +137,14 @@ contract LibMath is { require(denominator > 0, "DIVISION_BY_ZERO"); + // See the comments in `isRoundingError`. if (target == 0 || numerator == 0) { + // When either is zero, the ideal value and rounded value are zero + // and there is no rounding error. (Although the relative error + // is undefined.) return false; } + // Compute remainder as before uint256 remainder = mulmod(target, numerator, denominator); // TODO: safeMod remainder = safeSub(denominator, remainder) % denominator; -- cgit v1.2.3 From 7f78d7da9dd13d1f0068a292bcd1ee3c5439d5a8 Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Thu, 23 Aug 2018 15:19:29 -0700 Subject: Add tests --- .../TestExchangeInternals.sol | 19 +++++++++++- .../contracts/src/2.0.0/test/TestLibs/TestLibs.sol | 34 ++++++++++++++++++++++ 2 files changed, 52 insertions(+), 1 deletion(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol b/packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol index 239dd10a8..5e2ae2f0e 100644 --- a/packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol +++ b/packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol @@ -96,7 +96,7 @@ contract TestExchangeInternals is return getPartialAmountCeil(numerator, denominator, target); } - /// @dev Checks if rounding error > 0.1%. + /// @dev Checks if rounding error >= 0.1%. /// @param numerator Numerator. /// @param denominator Denominator. /// @param target Value to multiply with numerator/denominator. @@ -112,6 +112,23 @@ contract TestExchangeInternals is { return isRoundingError(numerator, denominator, target); } + + /// @dev Checks if rounding error >= 0.1%. + /// @param numerator Numerator. + /// @param denominator Denominator. + /// @param target Value to multiply with numerator/denominator. + /// @return Rounding error is present. + function publicIsRoundingErrorCeil( + uint256 numerator, + uint256 denominator, + uint256 target + ) + public + pure + returns (bool isError) + { + return isRoundingErrorCeil(numerator, denominator, target); + } /// @dev Updates state with results of a fill order. /// @param order that was filled. diff --git a/packages/contracts/src/2.0.0/test/TestLibs/TestLibs.sol b/packages/contracts/src/2.0.0/test/TestLibs/TestLibs.sol index 4a99dd9c1..8c3d12226 100644 --- a/packages/contracts/src/2.0.0/test/TestLibs/TestLibs.sol +++ b/packages/contracts/src/2.0.0/test/TestLibs/TestLibs.sol @@ -66,6 +66,23 @@ contract TestLibs is return partialAmount; } + function publicGetPartialAmountCeil( + uint256 numerator, + uint256 denominator, + uint256 target + ) + public + pure + returns (uint256 partialAmount) + { + partialAmount = getPartialAmountCeil( + numerator, + denominator, + target + ); + return partialAmount; + } + function publicIsRoundingError( uint256 numerator, uint256 denominator, @@ -83,6 +100,23 @@ contract TestLibs is return isError; } + function publicIsRoundingErrorCeil( + uint256 numerator, + uint256 denominator, + uint256 target + ) + public + pure + returns (bool isError) + { + isError = isRoundingErrorCeil( + numerator, + denominator, + target + ); + return isError; + } + function publicGetOrderHash(Order memory order) public view -- cgit v1.2.3 From f6080367fe3a90762afea76a653c5df1315c45fa Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Fri, 24 Aug 2018 14:11:45 -0700 Subject: Disambiguate the operator precedence --- packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol index 8a1444af1..90ec9e2b6 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol @@ -109,9 +109,9 @@ contract LibMath is // Otherwise, we want the relative rounding error to be strictly // less than 0.1%. - // The relative error is `remainder / numerator * target`. + // The relative error is `remainder / (numerator * target)`. // We want the relative error less than 1 / 1000: - // remainder / numerator * denominator < 1 / 1000 + // remainder / (numerator * denominator) < 1 / 1000 // or equivalently: // 1000 * remainder < numerator * target // so we have a rounding error iff: -- cgit v1.2.3 From 8ce4f9c784556e93bde2c58b670bf6efd5d3b7fd Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Fri, 24 Aug 2018 10:01:24 -0700 Subject: Remove SignatureType.Caller --- .../src/2.0.0/examples/Whitelist/Whitelist.sol | 2 +- .../protocol/Exchange/MixinSignatureValidator.sol | 34 +++++++--------------- .../Exchange/mixins/MSignatureValidator.sol | 11 ++++--- 3 files changed, 16 insertions(+), 31 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/examples/Whitelist/Whitelist.sol b/packages/contracts/src/2.0.0/examples/Whitelist/Whitelist.sol index 60cac26ea..e4e25038c 100644 --- a/packages/contracts/src/2.0.0/examples/Whitelist/Whitelist.sol +++ b/packages/contracts/src/2.0.0/examples/Whitelist/Whitelist.sol @@ -37,7 +37,7 @@ contract Whitelist is bytes internal TX_ORIGIN_SIGNATURE; // solhint-enable var-name-mixedcase - byte constant internal VALIDATOR_SIGNATURE_BYTE = "\x06"; + byte constant internal VALIDATOR_SIGNATURE_BYTE = "\x05"; constructor (address _exchange) public diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol index 017da742e..401fdd377 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol @@ -48,14 +48,16 @@ contract MixinSignatureValidator is ) external { - require( - isValidSignature( - hash, - signerAddress, - signature - ), - "INVALID_SIGNATURE" - ); + if (signerAddress != msg.sender) { + require( + isValidSignature( + hash, + signerAddress, + signature + ), + "INVALID_SIGNATURE" + ); + } preSigned[hash][signerAddress] = true; } @@ -172,22 +174,6 @@ contract MixinSignatureValidator is isValid = signerAddress == recovered; return isValid; - // Implicitly signed by caller. - // The signer has initiated the call. In the case of non-contract - // accounts it means the transaction itself was signed. - // Example: let's say for a particular operation three signatures - // A, B and C are required. To submit the transaction, A and B can - // give a signature to C, who can then submit the transaction using - // `Caller` for his own signature. Or A and C can sign and B can - // submit using `Caller`. Having `Caller` allows this flexibility. - } else if (signatureType == SignatureType.Caller) { - require( - signature.length == 0, - "LENGTH_0_REQUIRED" - ); - isValid = signerAddress == msg.sender; - return isValid; - // Signature verified by wallet contract. // If used with an order, the maker of the order is the wallet contract. } else if (signatureType == SignatureType.Wallet) { diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol index 75fe9ec46..b00c5e8da 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol @@ -36,12 +36,11 @@ contract MSignatureValidator is Invalid, // 0x01 EIP712, // 0x02 EthSign, // 0x03 - Caller, // 0x04 - Wallet, // 0x05 - Validator, // 0x06 - PreSigned, // 0x07 - Trezor, // 0x08 - NSignatureTypes // 0x09, number of signature types. Always leave at end. + Wallet, // 0x04 + Validator, // 0x05 + PreSigned, // 0x06 + Trezor, // 0x07 + NSignatureTypes // 0x08, number of signature types. Always leave at end. } /// @dev Verifies signature using logic defined by Wallet contract. -- cgit v1.2.3 From 1932aff35c6b07093534cde66dec63c5f919fcf0 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Fri, 24 Aug 2018 13:11:17 -0700 Subject: Remove Trezor SignatureType --- .../protocol/Exchange/MixinSignatureValidator.sol | 28 ---------------------- .../Exchange/mixins/MSignatureValidator.sol | 3 +-- 2 files changed, 1 insertion(+), 30 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol index 401fdd377..f30adcdb8 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol @@ -211,34 +211,6 @@ contract MixinSignatureValidator is } else if (signatureType == SignatureType.PreSigned) { isValid = preSigned[hash][signerAddress]; return isValid; - - // Signature from Trezor hardware wallet. - // It differs from web3.eth_sign in the encoding of message length - // (Bitcoin varint encoding vs ascii-decimal, the latter is not - // self-terminating which leads to ambiguities). - // See also: - // https://en.bitcoin.it/wiki/Protocol_documentation#Variable_length_integer - // https://github.com/trezor/trezor-mcu/blob/master/firmware/ethereum.c#L602 - // https://github.com/trezor/trezor-mcu/blob/master/firmware/crypto.c#L36 - } else if (signatureType == SignatureType.Trezor) { - require( - signature.length == 65, - "LENGTH_65_REQUIRED" - ); - v = uint8(signature[0]); - r = signature.readBytes32(1); - s = signature.readBytes32(33); - recovered = ecrecover( - keccak256(abi.encodePacked( - "\x19Ethereum Signed Message:\n\x20", - hash - )), - v, - r, - s - ); - isValid = signerAddress == recovered; - return isValid; } // Anything else is illegal (We do not return false because diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol index b00c5e8da..1fe88b908 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol @@ -39,8 +39,7 @@ contract MSignatureValidator is Wallet, // 0x04 Validator, // 0x05 PreSigned, // 0x06 - Trezor, // 0x07 - NSignatureTypes // 0x08, number of signature types. Always leave at end. + NSignatureTypes // 0x07, number of signature types. Always leave at end. } /// @dev Verifies signature using logic defined by Wallet contract. -- cgit v1.2.3 From 80291caf7cef16f0b300484755960d92d6750a6a Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Fri, 24 Aug 2018 16:16:44 -0700 Subject: Append -Floor to getPartialAmount and isRoundingError --- .../src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol | 4 ++-- .../src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol | 4 ++-- packages/contracts/src/2.0.0/extensions/Forwarder/MixinWeth.sol | 2 +- .../contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol | 8 ++++---- .../contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol | 4 ++-- .../src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol | 4 ++-- packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol | 8 ++++---- .../2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol | 8 ++++---- packages/contracts/src/2.0.0/test/TestLibs/TestLibs.sol | 8 ++++---- 9 files changed, 25 insertions(+), 25 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol index 218713d3c..a7ff400b9 100644 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol @@ -163,7 +163,7 @@ contract MixinExchangeWrapper is // Convert the remaining amount of makerAsset to buy into remaining amount // of takerAsset to sell, assuming entire amount can be sold in the current order - uint256 remainingTakerAssetFillAmount = getPartialAmount( + uint256 remainingTakerAssetFillAmount = getPartialAmountFloor( orders[i].takerAssetAmount, orders[i].makerAssetAmount, remainingMakerAssetFillAmount @@ -231,7 +231,7 @@ contract MixinExchangeWrapper is // Convert the remaining amount of ZRX to buy into remaining amount // of WETH to sell, assuming entire amount can be sold in the current order. - uint256 remainingWethSellAmount = getPartialAmount( + uint256 remainingWethSellAmount = getPartialAmountFloor( orders[i].takerAssetAmount, safeSub(orders[i].makerAssetAmount, orders[i].takerFee), // our exchange rate after fees remainingZrxBuyAmount diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol index 42cec4d36..14f191879 100644 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol @@ -87,7 +87,7 @@ contract MixinForwarderCore is uint256 makerAssetAmountPurchased; if (orders[0].makerAssetData.equals(ZRX_ASSET_DATA)) { // Calculate amount of WETH that won't be spent on ETH fees. - wethSellAmount = getPartialAmount( + wethSellAmount = getPartialAmountFloor( PERCENTAGE_DENOMINATOR, safeAdd(PERCENTAGE_DENOMINATOR, feePercentage), msg.value @@ -103,7 +103,7 @@ contract MixinForwarderCore is makerAssetAmountPurchased = safeSub(orderFillResults.makerAssetFilledAmount, orderFillResults.takerFeePaid); } else { // 5% of WETH is reserved for filling feeOrders and paying feeRecipient. - wethSellAmount = getPartialAmount( + wethSellAmount = getPartialAmountFloor( MAX_WETH_FILL_PERCENTAGE, PERCENTAGE_DENOMINATOR, msg.value diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinWeth.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinWeth.sol index 93e85e599..5863b522d 100644 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinWeth.sol +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinWeth.sol @@ -82,7 +82,7 @@ contract MixinWeth is uint256 wethRemaining = safeSub(msg.value, wethSold); // Calculate ETH fee to pay to feeRecipient. - uint256 ethFee = getPartialAmount( + uint256 ethFee = getPartialAmountFloor( feePercentage, PERCENTAGE_DENOMINATOR, wethSoldExcludingFeeOrders diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol index ab5c6e507..f3a0591b2 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -320,7 +320,7 @@ contract MixinExchangeCore is // Validate fill order rounding require( - !isRoundingError( + !isRoundingErrorFloor( takerAssetFilledAmount, order.takerAssetAmount, order.makerAssetAmount @@ -376,17 +376,17 @@ contract MixinExchangeCore is { // Compute proportional transfer amounts fillResults.takerAssetFilledAmount = takerAssetFilledAmount; - fillResults.makerAssetFilledAmount = getPartialAmount( + fillResults.makerAssetFilledAmount = getPartialAmountFloor( takerAssetFilledAmount, order.takerAssetAmount, order.makerAssetAmount ); - fillResults.makerFeePaid = getPartialAmount( + fillResults.makerFeePaid = getPartialAmountFloor( takerAssetFilledAmount, order.takerAssetAmount, order.makerFee ); - fillResults.takerFeePaid = getPartialAmount( + fillResults.takerFeePaid = getPartialAmountFloor( takerAssetFilledAmount, order.takerAssetAmount, order.takerFee diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol index 56b309a1b..20f4b1c33 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol @@ -183,7 +183,7 @@ contract MixinMatchOrders is leftTakerAssetFilledAmount = leftTakerAssetAmountRemaining; // The right order receives an amount proportional to how much was spent. - rightTakerAssetFilledAmount = getPartialAmount( + rightTakerAssetFilledAmount = getPartialAmountFloor( rightOrder.takerAssetAmount, rightOrder.makerAssetAmount, leftTakerAssetFilledAmount @@ -193,7 +193,7 @@ contract MixinMatchOrders is rightTakerAssetFilledAmount = rightTakerAssetAmountRemaining; // The left order receives an amount proportional to how much was spent. - leftTakerAssetFilledAmount = getPartialAmount( + leftTakerAssetFilledAmount = getPartialAmountFloor( rightOrder.makerAssetAmount, rightOrder.takerAssetAmount, rightTakerAssetFilledAmount diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol index 86194f461..1b77cfbcb 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol @@ -298,7 +298,7 @@ contract MixinWrapperFunctions is // Convert the remaining amount of makerAsset to buy into remaining amount // of takerAsset to sell, assuming entire amount can be sold in the current order - uint256 remainingTakerAssetFillAmount = getPartialAmount( + uint256 remainingTakerAssetFillAmount = getPartialAmountFloor( orders[i].takerAssetAmount, orders[i].makerAssetAmount, remainingMakerAssetFillAmount @@ -350,7 +350,7 @@ contract MixinWrapperFunctions is // Convert the remaining amount of makerAsset to buy into remaining amount // of takerAsset to sell, assuming entire amount can be sold in the current order - uint256 remainingTakerAssetFillAmount = getPartialAmount( + uint256 remainingTakerAssetFillAmount = getPartialAmountFloor( orders[i].takerAssetAmount, orders[i].makerAssetAmount, remainingMakerAssetFillAmount diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol index 90ec9e2b6..7d58f70ce 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol @@ -25,12 +25,12 @@ contract LibMath is SafeMath { - /// @dev Calculates partial value given a numerator and denominator. + /// @dev Calculates partial value given a numerator and denominator rounded down. /// @param numerator Numerator. /// @param denominator Denominator. /// @param target Value to calculate partial of. /// @return Partial value of target rounded down. - function getPartialAmount( + function getPartialAmountFloor( uint256 numerator, uint256 denominator, uint256 target @@ -48,7 +48,7 @@ contract LibMath is return partialAmount; } - /// @dev Calculates partial value given a numerator and denominator. + /// @dev Calculates partial value given a numerator and denominator rounded down. /// @param numerator Numerator. /// @param denominator Denominator. /// @param target Value to calculate partial of. @@ -79,7 +79,7 @@ contract LibMath is /// @param denominator Denominator. /// @param target Value to multiply with numerator/denominator. /// @return Rounding error is present. - function isRoundingError( + function isRoundingErrorFloor( uint256 numerator, uint256 denominator, uint256 target diff --git a/packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol b/packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol index 5e2ae2f0e..da9313e02 100644 --- a/packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol +++ b/packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol @@ -67,7 +67,7 @@ contract TestExchangeInternals is /// @param denominator Denominator. /// @param target Value to calculate partial of. /// @return Partial value of target. - function publicGetPartialAmount( + function publicGetPartialAmountFloor( uint256 numerator, uint256 denominator, uint256 target @@ -76,7 +76,7 @@ contract TestExchangeInternals is pure returns (uint256 partialAmount) { - return getPartialAmount(numerator, denominator, target); + return getPartialAmountFloor(numerator, denominator, target); } /// @dev Calculates partial value given a numerator and denominator. @@ -101,7 +101,7 @@ contract TestExchangeInternals is /// @param denominator Denominator. /// @param target Value to multiply with numerator/denominator. /// @return Rounding error is present. - function publicIsRoundingError( + function publicIsRoundingErrorFloor( uint256 numerator, uint256 denominator, uint256 target @@ -110,7 +110,7 @@ contract TestExchangeInternals is pure returns (bool isError) { - return isRoundingError(numerator, denominator, target); + return isRoundingErrorFloor(numerator, denominator, target); } /// @dev Checks if rounding error >= 0.1%. diff --git a/packages/contracts/src/2.0.0/test/TestLibs/TestLibs.sol b/packages/contracts/src/2.0.0/test/TestLibs/TestLibs.sol index 8c3d12226..c8c58545f 100644 --- a/packages/contracts/src/2.0.0/test/TestLibs/TestLibs.sol +++ b/packages/contracts/src/2.0.0/test/TestLibs/TestLibs.sol @@ -49,7 +49,7 @@ contract TestLibs is return fillOrderCalldata; } - function publicGetPartialAmount( + function publicGetPartialAmountFloor( uint256 numerator, uint256 denominator, uint256 target @@ -58,7 +58,7 @@ contract TestLibs is pure returns (uint256 partialAmount) { - partialAmount = getPartialAmount( + partialAmount = getPartialAmountFloor( numerator, denominator, target @@ -83,7 +83,7 @@ contract TestLibs is return partialAmount; } - function publicIsRoundingError( + function publicIsRoundingErrorFloor( uint256 numerator, uint256 denominator, uint256 target @@ -92,7 +92,7 @@ contract TestLibs is pure returns (bool isError) { - isError = isRoundingError( + isError = isRoundingErrorFloor( numerator, denominator, target -- cgit v1.2.3 From bc686fcbf3a0f9eea0c96107b9880314027f2d02 Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Fri, 24 Aug 2018 16:17:02 -0700 Subject: Stylistic fixes --- .../src/2.0.0/protocol/Exchange/libs/LibMath.sol | 25 +++++++++++++++++----- 1 file changed, 20 insertions(+), 5 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol index 7d58f70ce..0e0fba5d2 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol @@ -39,7 +39,10 @@ contract LibMath is pure returns (uint256 partialAmount) { - require(denominator > 0, "DIVISION_BY_ZERO"); + require( + denominator > 0, + "DIVISION_BY_ZERO" + ); partialAmount = safeDiv( safeMul(numerator, target), @@ -62,13 +65,19 @@ contract LibMath is pure returns (uint256 partialAmount) { - require(denominator > 0, "DIVISION_BY_ZERO"); + require( + denominator > 0, + "DIVISION_BY_ZERO" + ); // safeDiv computes `floor(a / b)`. We use the identity (a, b integer): // ceil(a / b) = floor((a + b - 1) / b) // To implement `ceil(a / b)` using safeDiv. partialAmount = safeDiv( - safeAdd(safeMul(numerator, target), safeSub(denominator, 1)), + safeAdd( + safeMul(numerator, target), + safeSub(denominator, 1) + ), denominator ); return partialAmount; @@ -88,7 +97,10 @@ contract LibMath is pure returns (bool isError) { - require(denominator > 0, "DIVISION_BY_ZERO"); + require( + denominator > 0, + "DIVISION_BY_ZERO" + ); // The absolute rounding error is the difference between the rounded // value and the ideal value. The relative rounding error is the @@ -135,7 +147,10 @@ contract LibMath is pure returns (bool isError) { - require(denominator > 0, "DIVISION_BY_ZERO"); + require( + denominator > 0, + "DIVISION_BY_ZERO" + ); // See the comments in `isRoundingError`. if (target == 0 || numerator == 0) { -- cgit v1.2.3 From 11328bd93d498abfcfbfa38ed69db8cb268f12be Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Fri, 24 Aug 2018 16:26:48 -0700 Subject: Skip self-transfers --- .../contracts/src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol index e9f882194..80475e6e3 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol @@ -83,7 +83,7 @@ contract MixinAssetProxyDispatcher is internal { // Do nothing if no amount should be transferred. - if (amount > 0) { + if (amount > 0 && from != to) { // Ensure assetData length is valid require( assetData.length > 3, -- cgit v1.2.3 From e706fa76acfbf933479f767749755446cdaf438a Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Fri, 17 Aug 2018 12:11:51 -0700 Subject: Add overfill and price assertion to assertValidFill --- .../2.0.0/protocol/Exchange/MixinExchangeCore.sol | 32 ++++++++++++++++++++-- .../protocol/Exchange/mixins/MExchangeCore.sol | 2 ++ 2 files changed, 32 insertions(+), 2 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol index ab5c6e507..e6b2ddf3d 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -266,6 +266,7 @@ contract MixinExchangeCore is /// @param takerAddress Address of order taker. /// @param takerAssetFillAmount Desired amount of order to fill by taker. /// @param takerAssetFilledAmount Amount of takerAsset that will be filled. + /// @param makerAssetFilledAmount Amount of makerAsset that will be transfered. /// @param signature Proof that the orders was created by its maker. function assertValidFill( Order memory order, @@ -273,6 +274,7 @@ contract MixinExchangeCore is address takerAddress, uint256 takerAssetFillAmount, uint256 takerAssetFilledAmount, + uint256 makerAssetFilledAmount, bytes memory signature ) internal @@ -297,7 +299,7 @@ contract MixinExchangeCore is "INVALID_SENDER" ); } - + // Validate taker is allowed to fill this order if (order.takerAddress != address(0)) { require( @@ -317,7 +319,33 @@ contract MixinExchangeCore is "INVALID_ORDER_SIGNATURE" ); } - + + // Make sure taker does not pay more than desired amount + // NOTE: This assertion should never fail, it is here + // as an extra defence against potential bugs. + require( + takerAssetFilledAmount <= takerAssetFilledAmount, + "BUG_TAKER_OVERPAY" + ); + + // Make sure order is not overfilled + // NOTE: This assertion should never fail, it is here + // as an extra defence against potential bugs. + require( + safeAdd(orderInfo.orderTakerAssetFilledAmount, takerAssetFilledAmount) <= order.takerAssetAmount, + "BUG_ORDER_OVERFILL" + ); + + // Make sure order is filled at acceptable price + // NOTE: This assertion should never fail, it is here + // as an extra defence against potential bugs. + require( + safeMul(makerAssetFilledAmount, order.takerAssetAmount) + <= + safeMul(takerAssetFilledAmount, order.makerAssetAmount), + "BUG_ORDER_FILL_PRICING" + ); + // Validate fill order rounding require( !isRoundingError( diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol index c165b647c..eccb6a29d 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol @@ -90,6 +90,7 @@ contract MExchangeCore is /// @param takerAddress Address of order taker. /// @param takerAssetFillAmount Desired amount of order to fill by taker. /// @param takerAssetFilledAmount Amount of takerAsset that will be filled. + /// @param makerAssetFilledAmount Amount of makerAsset that will be transfered. /// @param signature Proof that the orders was created by its maker. function assertValidFill( LibOrder.Order memory order, @@ -97,6 +98,7 @@ contract MExchangeCore is address takerAddress, uint256 takerAssetFillAmount, uint256 takerAssetFilledAmount, + uint256 makerAssetFilledAmount, bytes memory signature ) internal -- cgit v1.2.3 From d92fd437911a5b9c0af15322e39dd4c2a1f4ab60 Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Fri, 17 Aug 2018 12:12:27 -0700 Subject: Update for new assertValidFill signature --- .../contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol | 9 +++++---- .../contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol | 4 +++- 2 files changed, 8 insertions(+), 5 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol index e6b2ddf3d..36060a1b6 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -98,6 +98,9 @@ contract MixinExchangeCore is uint256 remainingTakerAssetAmount = safeSub(order.takerAssetAmount, orderInfo.orderTakerAssetFilledAmount); uint256 takerAssetFilledAmount = min256(takerAssetFillAmount, remainingTakerAssetAmount); + // Compute proportional fill amounts + fillResults = calculateFillResults(order, takerAssetFilledAmount); + // Validate context assertValidFill( order, @@ -105,12 +108,10 @@ contract MixinExchangeCore is takerAddress, takerAssetFillAmount, takerAssetFilledAmount, + fillResults.makerAssetFilledAmount, signature ); - - // Compute proportional fill amounts - fillResults = calculateFillResults(order, takerAssetFilledAmount); - + // Update exchange internal state updateFilledState( order, diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol index 56b309a1b..4d0411a63 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol @@ -80,6 +80,7 @@ contract MixinMatchOrders is takerAddress, matchedFillResults.left.takerAssetFilledAmount, matchedFillResults.left.takerAssetFilledAmount, + matchedFillResults.left.makerAssetFilledAmount, leftSignature ); assertValidFill( @@ -88,9 +89,10 @@ contract MixinMatchOrders is takerAddress, matchedFillResults.right.takerAssetFilledAmount, matchedFillResults.right.takerAssetFilledAmount, + matchedFillResults.right.makerAssetFilledAmount, rightSignature ); - + // Update exchange state updateFilledState( leftOrder, -- cgit v1.2.3 From b16f5f55fb66aac624dfb82b881026b588f66b79 Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Fri, 17 Aug 2018 14:19:19 -0700 Subject: Check fillable early --- .../contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol index 36060a1b6..e281de264 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -90,6 +90,12 @@ contract MixinExchangeCore is { // Fetch order info OrderInfo memory orderInfo = getOrderInfo(order); + + // An order can only be filled if its status is FILLABLE. + require( + orderInfo.orderStatus == uint8(OrderStatus.FILLABLE), + "ORDER_UNFILLABLE" + ); // Fetch taker address address takerAddress = getCurrentContextAddress(); -- cgit v1.2.3 From 07e56b3cc7f1171cb199b5f0e286971d0704adb6 Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Thu, 23 Aug 2018 15:33:46 -0700 Subject: Fix taker overpay check --- packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol index e281de264..b3671e7e8 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -331,7 +331,7 @@ contract MixinExchangeCore is // NOTE: This assertion should never fail, it is here // as an extra defence against potential bugs. require( - takerAssetFilledAmount <= takerAssetFilledAmount, + takerAssetFilledAmount <= takerAssetFillAmount, "BUG_TAKER_OVERPAY" ); -- cgit v1.2.3 From a1d89435525795f6f412a823241740f10cbdf1d8 Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Thu, 23 Aug 2018 16:00:01 -0700 Subject: Document accetable price check --- .../src/2.0.0/protocol/Exchange/MixinExchangeCore.sol | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol index b3671e7e8..e5bd306dd 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -343,13 +343,27 @@ contract MixinExchangeCore is "BUG_ORDER_OVERFILL" ); - // Make sure order is filled at acceptable price + // Make sure order is filled at acceptable price. + // The order has an implied price from the makers perspective: + // order price = order.makerAssetAmount / order.takerAssetAmount + // i.e. the number of makerAsset maker is paying per takerAsset. The + // maker is guaranteed to get this price or a better (lower) one. The + // actual price maker is getting in this fill is: + // fill price = makerAssetFilledAmount / takerAssetFilledAmount + // We need `fill price <= order price` for the fill to be fair to maker. + // This amounts to: + // makerAssetFilledAmount order.makerAssetAmount + // ------------------------ <= ----------------------- + // takerAssetFilledAmount order.takerAssetAmount + // or, equivalently: + // makerAssetFilledAmount * order.takerAssetAmount <= + // order.makerAssetAmount * takerAssetFilledAmount // NOTE: This assertion should never fail, it is here // as an extra defence against potential bugs. require( safeMul(makerAssetFilledAmount, order.takerAssetAmount) <= - safeMul(takerAssetFilledAmount, order.makerAssetAmount), + safeMul(order.makerAssetAmount, takerAssetFilledAmount), "BUG_ORDER_FILL_PRICING" ); -- cgit v1.2.3 From e6e7bae4459595343e07c26891577a004b0062eb Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Thu, 23 Aug 2018 16:51:31 -0700 Subject: Remove BUG_ from revert reasons --- .../contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol index e5bd306dd..1a0a1a135 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -332,7 +332,7 @@ contract MixinExchangeCore is // as an extra defence against potential bugs. require( takerAssetFilledAmount <= takerAssetFillAmount, - "BUG_TAKER_OVERPAY" + "TAKER_OVERPAY" ); // Make sure order is not overfilled @@ -340,7 +340,7 @@ contract MixinExchangeCore is // as an extra defence against potential bugs. require( safeAdd(orderInfo.orderTakerAssetFilledAmount, takerAssetFilledAmount) <= order.takerAssetAmount, - "BUG_ORDER_OVERFILL" + "ORDER_OVERFILL" ); // Make sure order is filled at acceptable price. @@ -364,7 +364,7 @@ contract MixinExchangeCore is safeMul(makerAssetFilledAmount, order.takerAssetAmount) <= safeMul(order.makerAssetAmount, takerAssetFilledAmount), - "BUG_ORDER_FILL_PRICING" + "INVALID_FILL_PRICE" ); // Validate fill order rounding -- cgit v1.2.3 From 3e4493b389334fa28ae0f0043e4dbda23f21adec Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Fri, 24 Aug 2018 10:49:05 -0700 Subject: Disallow self filling --- .../contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol index 1a0a1a135..b8b3899e8 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -314,7 +314,13 @@ contract MixinExchangeCore is "INVALID_TAKER" ); } - + + // Orders can not be self-filled (use cancel instead) + require( + order.makerAddress != takerAddress, + "INVALID_TAKER" + ); + // Validate Maker signature (check only if first time seen) if (orderInfo.orderTakerAssetFilledAmount == 0) { require( -- cgit v1.2.3 From 29971f36cf5c0096dfd3b52c014c52b812a9e9ac Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Fri, 24 Aug 2018 13:41:56 -0700 Subject: Split into assertFillable and assertValidFill --- .../2.0.0/protocol/Exchange/MixinExchangeCore.sol | 54 ++++++++++++---------- .../2.0.0/protocol/Exchange/MixinMatchOrders.sol | 18 ++++++-- 2 files changed, 43 insertions(+), 29 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol index b8b3899e8..4fd71092c 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -91,14 +91,11 @@ contract MixinExchangeCore is // Fetch order info OrderInfo memory orderInfo = getOrderInfo(order); - // An order can only be filled if its status is FILLABLE. - require( - orderInfo.orderStatus == uint8(OrderStatus.FILLABLE), - "ORDER_UNFILLABLE" - ); - // Fetch taker address address takerAddress = getCurrentContextAddress(); + + // Assert that the order is fillable by taker + assertFillableOrder(order, orderInfo, taker, signature); // Get amount of takerAsset to fill uint256 remainingTakerAssetAmount = safeSub(order.takerAssetAmount, orderInfo.orderTakerAssetFilledAmount); @@ -110,8 +107,6 @@ contract MixinExchangeCore is // Validate context assertValidFill( order, - orderInfo, - takerAddress, takerAssetFillAmount, takerAssetFilledAmount, fillResults.makerAssetFilledAmount, @@ -266,22 +261,16 @@ contract MixinExchangeCore is order.takerAssetData ); } - + /// @dev Validates context for fillOrder. Succeeds or throws. /// @param order to be filled. /// @param orderInfo OrderStatus, orderHash, and amount already filled of order. /// @param takerAddress Address of order taker. - /// @param takerAssetFillAmount Desired amount of order to fill by taker. - /// @param takerAssetFilledAmount Amount of takerAsset that will be filled. - /// @param makerAssetFilledAmount Amount of makerAsset that will be transfered. /// @param signature Proof that the orders was created by its maker. - function assertValidFill( + function assertFillableOrder( Order memory order, OrderInfo memory orderInfo, - address takerAddress, - uint256 takerAssetFillAmount, - uint256 takerAssetFilledAmount, - uint256 makerAssetFilledAmount, + address taker, bytes memory signature ) internal @@ -292,13 +281,7 @@ contract MixinExchangeCore is orderInfo.orderStatus == uint8(OrderStatus.FILLABLE), "ORDER_UNFILLABLE" ); - - // Revert if fill amount is invalid - require( - takerAssetFillAmount != 0, - "INVALID_TAKER_AMOUNT" - ); - + // Validate sender is allowed to fill this order if (order.senderAddress != address(0)) { require( @@ -332,6 +315,29 @@ contract MixinExchangeCore is "INVALID_ORDER_SIGNATURE" ); } + } + + /// @dev Validates context for fillOrder. Succeeds or throws. + /// @param order to be filled. + /// @param takerAssetFillAmount Desired amount of order to fill by taker. + /// @param takerAssetFilledAmount Amount of takerAsset that will be filled. + /// @param makerAssetFilledAmount Amount of makerAsset that will be transfered. + /// @param signature Proof that the orders was created by its maker. + function assertValidFill( + Order memory order, + uint256 takerAssetFillAmount, + uint256 takerAssetFilledAmount, + uint256 makerAssetFilledAmount, + bytes memory signature + ) + internal + view + { + // Revert if fill amount is invalid + require( + takerAssetFillAmount != 0, + "INVALID_TAKER_AMOUNT" + ); // Make sure taker does not pay more than desired amount // NOTE: This assertion should never fail, it is here diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol index 4d0411a63..5a5b0376e 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol @@ -61,8 +61,20 @@ contract MixinMatchOrders is // Fetch taker address address takerAddress = getCurrentContextAddress(); - + // Either our context is valid or we revert + assertFillableOrder( + leftOrder, + leftOrderInfo, + takerAddress, + leftSignature + ); + assertFillableOrder( + righttOrder, + righttOrderInfo, + takerAddress, + leftSignature + ); assertValidMatch(leftOrder, rightOrder); // Compute proportional fill amounts @@ -76,8 +88,6 @@ contract MixinMatchOrders is // Validate fill contexts assertValidFill( leftOrder, - leftOrderInfo, - takerAddress, matchedFillResults.left.takerAssetFilledAmount, matchedFillResults.left.takerAssetFilledAmount, matchedFillResults.left.makerAssetFilledAmount, @@ -85,8 +95,6 @@ contract MixinMatchOrders is ); assertValidFill( rightOrder, - rightOrderInfo, - takerAddress, matchedFillResults.right.takerAssetFilledAmount, matchedFillResults.right.takerAssetFilledAmount, matchedFillResults.right.makerAssetFilledAmount, -- cgit v1.2.3 From e21599285941a092a6c6f2dbf58f14f467dcca85 Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Fri, 24 Aug 2018 16:13:17 -0700 Subject: Fix mixin api --- .../2.0.0/protocol/Exchange/MixinExchangeCore.sol | 21 +++++++++++++-------- .../2.0.0/protocol/Exchange/MixinMatchOrders.sol | 14 +++++++------- .../protocol/Exchange/mixins/MExchangeCore.sol | 22 ++++++++++++++++------ 3 files changed, 36 insertions(+), 21 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol index 4fd71092c..dc62db448 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -95,7 +95,12 @@ contract MixinExchangeCore is address takerAddress = getCurrentContextAddress(); // Assert that the order is fillable by taker - assertFillableOrder(order, orderInfo, taker, signature); + assertFillableOrder( + order, + orderInfo, + takerAddress, + signature + ); // Get amount of takerAsset to fill uint256 remainingTakerAssetAmount = safeSub(order.takerAssetAmount, orderInfo.orderTakerAssetFilledAmount); @@ -107,10 +112,10 @@ contract MixinExchangeCore is // Validate context assertValidFill( order, + orderInfo, takerAssetFillAmount, takerAssetFilledAmount, - fillResults.makerAssetFilledAmount, - signature + fillResults.makerAssetFilledAmount ); // Update exchange internal state @@ -270,7 +275,7 @@ contract MixinExchangeCore is function assertFillableOrder( Order memory order, OrderInfo memory orderInfo, - address taker, + address takerAddress, bytes memory signature ) internal @@ -319,16 +324,16 @@ contract MixinExchangeCore is /// @dev Validates context for fillOrder. Succeeds or throws. /// @param order to be filled. + /// @param orderInfo OrderStatus, orderHash, and amount already filled of order. /// @param takerAssetFillAmount Desired amount of order to fill by taker. /// @param takerAssetFilledAmount Amount of takerAsset that will be filled. /// @param makerAssetFilledAmount Amount of makerAsset that will be transfered. - /// @param signature Proof that the orders was created by its maker. function assertValidFill( Order memory order, - uint256 takerAssetFillAmount, + OrderInfo memory orderInfo, + uint256 takerAssetFillAmount, // TODO: use FillResults uint256 takerAssetFilledAmount, - uint256 makerAssetFilledAmount, - bytes memory signature + uint256 makerAssetFilledAmount ) internal view diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol index 5a5b0376e..c860640c4 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol @@ -70,10 +70,10 @@ contract MixinMatchOrders is leftSignature ); assertFillableOrder( - righttOrder, - righttOrderInfo, + rightOrder, + rightOrderInfo, takerAddress, - leftSignature + rightSignature ); assertValidMatch(leftOrder, rightOrder); @@ -88,17 +88,17 @@ contract MixinMatchOrders is // Validate fill contexts assertValidFill( leftOrder, + leftOrderInfo, matchedFillResults.left.takerAssetFilledAmount, matchedFillResults.left.takerAssetFilledAmount, - matchedFillResults.left.makerAssetFilledAmount, - leftSignature + matchedFillResults.left.makerAssetFilledAmount ); assertValidFill( rightOrder, + rightOrderInfo, matchedFillResults.right.takerAssetFilledAmount, matchedFillResults.right.takerAssetFilledAmount, - matchedFillResults.right.makerAssetFilledAmount, - rightSignature + matchedFillResults.right.makerAssetFilledAmount ); // Update exchange state diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol index eccb6a29d..708cb329e 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol @@ -83,23 +83,33 @@ contract MExchangeCore is bytes32 orderHash ) internal; - + /// @dev Validates context for fillOrder. Succeeds or throws. /// @param order to be filled. - /// @param orderInfo Status, orderHash, and amount already filled of order. + /// @param orderInfo OrderStatus, orderHash, and amount already filled of order. /// @param takerAddress Address of order taker. + /// @param signature Proof that the orders was created by its maker. + function assertFillableOrder( + LibOrder.Order memory order, + LibOrder.OrderInfo memory orderInfo, + address takerAddress, + bytes memory signature + ) + internal + view; + + /// @dev Validates context for fillOrder. Succeeds or throws. + /// @param order to be filled. + /// @param orderInfo Status, orderHash, and amount already filled of order. /// @param takerAssetFillAmount Desired amount of order to fill by taker. /// @param takerAssetFilledAmount Amount of takerAsset that will be filled. /// @param makerAssetFilledAmount Amount of makerAsset that will be transfered. - /// @param signature Proof that the orders was created by its maker. function assertValidFill( LibOrder.Order memory order, LibOrder.OrderInfo memory orderInfo, - address takerAddress, uint256 takerAssetFillAmount, uint256 takerAssetFilledAmount, - uint256 makerAssetFilledAmount, - bytes memory signature + uint256 makerAssetFilledAmount ) internal view; -- cgit v1.2.3 From 6b866d60533c7e46446bfb69639b07affd1aeb17 Mon Sep 17 00:00:00 2001 From: Remco Bloemen Date: Fri, 24 Aug 2018 17:29:52 -0700 Subject: Revert maker not equal taker check --- .../contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol index dc62db448..515606cb9 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -303,12 +303,6 @@ contract MixinExchangeCore is ); } - // Orders can not be self-filled (use cancel instead) - require( - order.makerAddress != takerAddress, - "INVALID_TAKER" - ); - // Validate Maker signature (check only if first time seen) if (orderInfo.orderTakerAssetFilledAmount == 0) { require( @@ -339,6 +333,7 @@ contract MixinExchangeCore is view { // Revert if fill amount is invalid + // TODO: reconsider necessity for v2.1 require( takerAssetFillAmount != 0, "INVALID_TAKER_AMOUNT" -- cgit v1.2.3 From 044415e23d3a079e6301d8fb838da60456794c4f Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Mon, 20 Aug 2018 17:37:23 -0700 Subject: Remove redundant sload from getCurrentContextAddress --- packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol index 821d30279..4a59b6c0f 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol @@ -155,7 +155,8 @@ contract MixinTransactions is view returns (address) { - address contextAddress = currentContextAddress == address(0) ? msg.sender : currentContextAddress; + address currentContextAddress_ = currentContextAddress; + address contextAddress = currentContextAddress_ == address(0) ? msg.sender : currentContextAddress_; return contextAddress; } } -- cgit v1.2.3 From d8cb56caa33885397f557afac5a4ccb24efb47d0 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Mon, 20 Aug 2018 17:38:25 -0700 Subject: Add ReentrancyGuard contract --- .../utils/ReentrancyGuard/ReentrancyGuard.sol | 44 ++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol b/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol new file mode 100644 index 000000000..70fc4ca6b --- /dev/null +++ b/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol @@ -0,0 +1,44 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ +pragma solidity 0.4.24; + + +contract ReentrancyGuard { + + // Locked state of mutex + bool private locked = false; + + /// @dev Functions with this modifier cannot be reentered. + modifier nonReentrant() { + // Ensure mutex is unlocked + require( + !locked, + "REENTRANCY_ILLEGAL" + ); + + // Lock mutex before function call + locked = true; + + // Perform function call + _; + + // Unlock mutex after function call + locked = false; + } + +} -- cgit v1.2.3 From 6f88e9bdbdd8f44c45053b8c17c84411f9499084 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Tue, 21 Aug 2018 16:06:21 -0700 Subject: Add internal fill functions, add reentrancy guard to public functions that make external calls --- .../2.0.0/protocol/Exchange/MixinExchangeCore.sol | 86 ++++++++++++++-------- .../2.0.0/protocol/Exchange/MixinMatchOrders.sol | 3 + .../protocol/Exchange/MixinWrapperFunctions.sol | 46 +++++++++--- .../protocol/Exchange/mixins/MExchangeCore.sol | 13 ++++ .../protocol/Exchange/mixins/MWrapperFunctions.sol | 40 ++++++++++ .../utils/ReentrancyGuard/ReentrancyGuard.sol | 1 - 6 files changed, 148 insertions(+), 41 deletions(-) create mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/mixins/MWrapperFunctions.sol (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol index f3a0591b2..d00323b15 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -19,6 +19,7 @@ pragma solidity 0.4.24; pragma experimental ABIEncoderV2; +import "../../utils/ReentrancyGuard/ReentrancyGuard.sol"; import "./libs/LibConstants.sol"; import "./libs/LibFillResults.sol"; import "./libs/LibOrder.sol"; @@ -30,6 +31,7 @@ import "./mixins/MAssetProxyDispatcher.sol"; contract MixinExchangeCore is + ReentrancyGuard, LibConstants, LibMath, LibOrder, @@ -86,43 +88,14 @@ contract MixinExchangeCore is bytes memory signature ) public + nonReentrant returns (FillResults memory fillResults) { - // Fetch order info - OrderInfo memory orderInfo = getOrderInfo(order); - - // Fetch taker address - address takerAddress = getCurrentContextAddress(); - - // Get amount of takerAsset to fill - uint256 remainingTakerAssetAmount = safeSub(order.takerAssetAmount, orderInfo.orderTakerAssetFilledAmount); - uint256 takerAssetFilledAmount = min256(takerAssetFillAmount, remainingTakerAssetAmount); - - // Validate context - assertValidFill( + fillResults = fillOrderInternal( order, - orderInfo, - takerAddress, takerAssetFillAmount, - takerAssetFilledAmount, signature ); - - // Compute proportional fill amounts - fillResults = calculateFillResults(order, takerAssetFilledAmount); - - // Update exchange internal state - updateFilledState( - order, - takerAddress, - orderInfo.orderHash, - orderInfo.orderTakerAssetFilledAmount, - fillResults - ); - - // Settle order - settleOrder(order, takerAddress, fillResults); - return fillResults; } @@ -203,6 +176,57 @@ contract MixinExchangeCore is return orderInfo; } + /// @dev Fills the input order. + /// @param order Order struct containing order specifications. + /// @param takerAssetFillAmount Desired amount of takerAsset to sell. + /// @param signature Proof that order has been created by maker. + /// @return Amounts filled and fees paid by maker and taker. + function fillOrderInternal( + Order memory order, + uint256 takerAssetFillAmount, + bytes memory signature + ) + internal + returns (FillResults memory fillResults) + { + // Fetch order info + OrderInfo memory orderInfo = getOrderInfo(order); + + // Fetch taker address + address takerAddress = getCurrentContextAddress(); + + // Get amount of takerAsset to fill + uint256 remainingTakerAssetAmount = safeSub(order.takerAssetAmount, orderInfo.orderTakerAssetFilledAmount); + uint256 takerAssetFilledAmount = min256(takerAssetFillAmount, remainingTakerAssetAmount); + + // Validate context + assertValidFill( + order, + orderInfo, + takerAddress, + takerAssetFillAmount, + takerAssetFilledAmount, + signature + ); + + // Compute proportional fill amounts + fillResults = calculateFillResults(order, takerAssetFilledAmount); + + // Update exchange internal state + updateFilledState( + order, + takerAddress, + orderInfo.orderHash, + orderInfo.orderTakerAssetFilledAmount, + fillResults + ); + + // Settle order + settleOrder(order, takerAddress, fillResults); + + return fillResults; + } + /// @dev Updates state with results of a fill order. /// @param order that was filled. /// @param takerAddress Address of taker who filled the order. diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol index 20f4b1c33..25220a673 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol @@ -14,6 +14,7 @@ pragma solidity 0.4.24; pragma experimental ABIEncoderV2; +import "../../utils/ReentrancyGuard/ReentrancyGuard.sol"; import "./libs/LibConstants.sol"; import "./libs/LibMath.sol"; import "./libs/LibOrder.sol"; @@ -25,6 +26,7 @@ import "./mixins/MAssetProxyDispatcher.sol"; contract MixinMatchOrders is + ReentrancyGuard, LibConstants, LibMath, MAssetProxyDispatcher, @@ -48,6 +50,7 @@ contract MixinMatchOrders is bytes memory rightSignature ) public + nonReentrant returns (LibFillResults.MatchedFillResults memory matchedFillResults) { // We assume that rightOrder.takerAssetData == leftOrder.makerAssetData and rightOrder.makerAssetData == leftOrder.takerAssetData. diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol index 1b77cfbcb..ff1cb6995 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol @@ -19,14 +19,17 @@ pragma solidity 0.4.24; pragma experimental ABIEncoderV2; +import "../../utils/ReentrancyGuard/ReentrancyGuard.sol"; import "./libs/LibMath.sol"; import "./libs/LibOrder.sol"; import "./libs/LibFillResults.sol"; import "./libs/LibAbiEncoder.sol"; import "./mixins/MExchangeCore.sol"; +import "./mixins/MWrapperFunctions.sol"; contract MixinWrapperFunctions is + ReentrancyGuard, LibMath, LibFillResults, LibAbiEncoder, @@ -43,17 +46,14 @@ contract MixinWrapperFunctions is bytes memory signature ) public + nonReentrant returns (FillResults memory fillResults) { - fillResults = fillOrder( + fillResults = fillOrKillOrderInternal( order, takerAssetFillAmount, signature ); - require( - fillResults.takerAssetFilledAmount == takerAssetFillAmount, - "COMPLETE_FILL_FAILED" - ); return fillResults; } @@ -117,11 +117,12 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public + nonReentrant returns (FillResults memory totalFillResults) { uint256 ordersLength = orders.length; for (uint256 i = 0; i != ordersLength; i++) { - FillResults memory singleFillResults = fillOrder( + FillResults memory singleFillResults = fillOrderInternal( orders[i], takerAssetFillAmounts[i], signatures[i] @@ -143,11 +144,12 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public + nonReentrant returns (FillResults memory totalFillResults) { uint256 ordersLength = orders.length; for (uint256 i = 0; i != ordersLength; i++) { - FillResults memory singleFillResults = fillOrKillOrder( + FillResults memory singleFillResults = fillOrKillOrderInternal( orders[i], takerAssetFillAmounts[i], signatures[i] @@ -195,6 +197,7 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public + nonReentrant returns (FillResults memory totalFillResults) { bytes memory takerAssetData = orders[0].takerAssetData; @@ -210,7 +213,7 @@ contract MixinWrapperFunctions is uint256 remainingTakerAssetFillAmount = safeSub(takerAssetFillAmount, totalFillResults.takerAssetFilledAmount); // Attempt to sell the remaining amount of takerAsset - FillResults memory singleFillResults = fillOrder( + FillResults memory singleFillResults = fillOrderInternal( orders[i], remainingTakerAssetFillAmount, signatures[i] @@ -282,6 +285,7 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public + nonReentrant returns (FillResults memory totalFillResults) { bytes memory makerAssetData = orders[0].makerAssetData; @@ -305,7 +309,7 @@ contract MixinWrapperFunctions is ); // Attempt to sell the remaining amount of takerAsset - FillResults memory singleFillResults = fillOrder( + FillResults memory singleFillResults = fillOrderInternal( orders[i], remainingTakerAssetFillAmount, signatures[i] @@ -400,4 +404,28 @@ contract MixinWrapperFunctions is } return ordersInfo; } + + /// @dev Fills the input order. Reverts if exact takerAssetFillAmount not filled. + /// @param order Order struct containing order specifications. + /// @param takerAssetFillAmount Desired amount of takerAsset to sell. + /// @param signature Proof that order has been created by maker. + function fillOrKillOrderInternal( + LibOrder.Order memory order, + uint256 takerAssetFillAmount, + bytes memory signature + ) + internal + returns (FillResults memory fillResults) + { + fillResults = fillOrderInternal( + order, + takerAssetFillAmount, + signature + ); + require( + fillResults.takerAssetFilledAmount == takerAssetFillAmount, + "COMPLETE_FILL_FAILED" + ); + return fillResults; + } } diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol index c165b647c..41832fe4b 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol @@ -59,6 +59,19 @@ contract MExchangeCore is uint256 orderEpoch // Orders with specified makerAddress and senderAddress with a salt less than this value are considered cancelled. ); + /// @dev Fills the input order. + /// @param order Order struct containing order specifications. + /// @param takerAssetFillAmount Desired amount of takerAsset to sell. + /// @param signature Proof that order has been created by maker. + /// @return Amounts filled and fees paid by maker and taker. + function fillOrderInternal( + LibOrder.Order memory order, + uint256 takerAssetFillAmount, + bytes memory signature + ) + internal + returns (LibFillResults.FillResults memory fillResults); + /// @dev Updates state with results of a fill order. /// @param order that was filled. /// @param takerAddress Address of taker who filled the order. diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MWrapperFunctions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MWrapperFunctions.sol new file mode 100644 index 000000000..e04d4a429 --- /dev/null +++ b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MWrapperFunctions.sol @@ -0,0 +1,40 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.24; +pragma experimental ABIEncoderV2; + +import "../libs/LibOrder.sol"; +import "../libs/LibFillResults.sol"; +import "../interfaces/IWrapperFunctions.sol"; + + +contract MWrapperFunctions { + + /// @dev Fills the input order. Reverts if exact takerAssetFillAmount not filled. + /// @param order LibOrder.Order struct containing order specifications. + /// @param takerAssetFillAmount Desired amount of takerAsset to sell. + /// @param signature Proof that order has been created by maker. + function fillOrKillOrderInternal( + LibOrder.Order memory order, + uint256 takerAssetFillAmount, + bytes memory signature + ) + internal + returns (LibFillResults.FillResults memory fillResults); +} diff --git a/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol b/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol index 70fc4ca6b..5d6f6970d 100644 --- a/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol +++ b/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol @@ -40,5 +40,4 @@ contract ReentrancyGuard { // Unlock mutex after function call locked = false; } - } -- cgit v1.2.3 From cf12daea2f3a907f6a111c12d1e67c2e8b0a8797 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Tue, 21 Aug 2018 17:53:40 -0700 Subject: Add ReentrantToken --- .../ReentrantERC20Token/ReentrantERC20Token.sol | 173 +++++++++++++++++++++ 1 file changed, 173 insertions(+) create mode 100644 packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol b/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol new file mode 100644 index 000000000..f5c98177f --- /dev/null +++ b/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol @@ -0,0 +1,173 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.24; +pragma experimental ABIEncoderV2; + +import "../../tokens/ERC20Token/ERC20Token.sol"; +import "../../protocol/Exchange/interfaces/IExchange.sol"; +import "../../protocol/Exchange/libs/LibOrder.sol"; + + +contract ReentrantERC20Token is + ERC20Token +{ + // solhint-disable-next-line var-name-mixedcase + IExchange internal EXCHANGE; + + // All of these functions are potentially vulnerable to reentrancy + enum ExchangeFunction { + FILL_ORDER, + FILL_OR_KILL_ORDER, + FILL_ORDER_NO_THROW, + BATCH_FILL_ORDERS, + BATCH_FILL_OR_KILL_ORDERS, + BATCH_FILL_ORDERS_NO_THROW, + MARKET_BUY_ORDERS, + MARKET_BUY_ORDERS_NO_THROW, + MARKET_SELL_ORDERS, + MARKET_SELL_ORDERS_NO_THROW, + MATCH_ORDERS + } + + uint8 internal currentFunctionId = 0; + + constructor (address _exchange) + public + { + EXCHANGE = IExchange(_exchange); + } + + /// @dev Set the current function that will be called when `transferFrom` is called. + /// @param _currentFunctionId Id that corresponds to function name. + function setCurrentFunction(uint8 _currentFunctionId) + external + { + currentFunctionId = _currentFunctionId; + } + + /// @dev A version of `transferFrom` that attempts to reenter the Exchange contract. + /// @param _from The address of the sender + /// @param _to The address of the recipient + /// @param _value The amount of token to be transferred + function transferFrom( + address _from, + address _to, + uint256 _value + ) + external + returns (bool) + { + // This order would normally be invalid, but it will be used strictly for testing reentrnacy. + // Any reentrancy checks will happen before any other checks that invalidate the order. + LibOrder.Order memory order = LibOrder.Order({ + makerAddress: address(0), + takerAddress: address(0), + feeRecipientAddress: address(0), + senderAddress: address(0), + makerAssetAmount: 0, + takerAssetAmount: 0, + makerFee: 0, + takerFee: 0, + expirationTimeSeconds: 0, + salt: 0, + makerAssetData: "", + takerAssetData: "" + }); + + // Initialize remaining null parameters + bytes memory signature = ""; + LibOrder.Order[] memory orders = new LibOrder.Order[](1); + orders[0] = order; + uint256[] memory takerAssetFillAmounts = new uint256[](1); + takerAssetFillAmounts[0] = 0; + bytes[] memory signatures = new bytes[](1); + signatures[0] = signature; + + // Attempt to reenter Exchange by calling function with currentFunctionId + if (currentFunctionId == uint8(ExchangeFunction.FILL_ORDER)) { + EXCHANGE.fillOrder( + order, + 0, + signature + ); + } else if (currentFunctionId == uint8(ExchangeFunction.FILL_OR_KILL_ORDER)) { + EXCHANGE.fillOrKillOrder( + order, + 0, + signature + ); + } else if (currentFunctionId == uint8(ExchangeFunction.FILL_ORDER_NO_THROW)) { + EXCHANGE.fillOrderNoThrow( + order, + 0, + signature + ); + } else if (currentFunctionId == uint8(ExchangeFunction.BATCH_FILL_ORDERS)) { + EXCHANGE.batchFillOrders( + orders, + takerAssetFillAmounts, + signatures + ); + } else if (currentFunctionId == uint8(ExchangeFunction.BATCH_FILL_OR_KILL_ORDERS)) { + EXCHANGE.batchFillOrKillOrders( + orders, + takerAssetFillAmounts, + signatures + ); + } else if (currentFunctionId == uint8(ExchangeFunction.BATCH_FILL_ORDERS_NO_THROW)) { + EXCHANGE.batchFillOrdersNoThrow( + orders, + takerAssetFillAmounts, + signatures + ); + } else if (currentFunctionId == uint8(ExchangeFunction.MARKET_BUY_ORDERS)) { + EXCHANGE.marketBuyOrders( + orders, + 0, + signatures + ); + } else if (currentFunctionId == uint8(ExchangeFunction.MARKET_BUY_ORDERS_NO_THROW)) { + EXCHANGE.marketBuyOrdersNoThrow( + orders, + 0, + signatures + ); + } else if (currentFunctionId == uint8(ExchangeFunction.MARKET_SELL_ORDERS)) { + EXCHANGE.marketSellOrders( + orders, + 0, + signatures + ); + } else if (currentFunctionId == uint8(ExchangeFunction.MARKET_SELL_ORDERS_NO_THROW)) { + EXCHANGE.marketSellOrdersNoThrow( + orders, + 0, + signatures + ); + } else if (currentFunctionId == uint8(ExchangeFunction.MATCH_ORDERS)) { + EXCHANGE.matchOrders( + order, + order, + signature, + signature + ); + } + return true; + } +} \ No newline at end of file -- cgit v1.2.3 From 6d0dedc62cb1be54dbdd287fd59d7b568a199007 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Wed, 22 Aug 2018 17:57:57 -0700 Subject: Split modifiers into check only and check, lock, unlock --- .../src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol b/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol index 5d6f6970d..2b980c7ca 100644 --- a/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol +++ b/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol @@ -31,6 +31,19 @@ contract ReentrancyGuard { "REENTRANCY_ILLEGAL" ); + // Perform function call + _; + } + + /// @dev Functions with this modifer cannot be reentered. The mutex will be locked + /// before function execution and unlocked after. + modifier lockMutex() { + // Ensure mutex is unlocked + require( + !locked, + "REENTRANCY_ILLEGAL" + ); + // Lock mutex before function call locked = true; -- cgit v1.2.3 From c75212bef0b3801ecda09a89d5e30e359dcf1b63 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Wed, 22 Aug 2018 17:58:47 -0700 Subject: Add nonReentrant modifiers on functions that use getCurrentContextAddress only, add lockMutex modifier on functions that make external calls --- .../2.0.0/protocol/Exchange/MixinExchangeCore.sol | 4 +++- .../2.0.0/protocol/Exchange/MixinMatchOrders.sol | 2 +- .../protocol/Exchange/MixinSignatureValidator.sol | 3 +++ .../protocol/Exchange/MixinWrapperFunctions.sol | 23 ++++++++++------------ 4 files changed, 17 insertions(+), 15 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol index d00323b15..f02514fc6 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -56,6 +56,7 @@ contract MixinExchangeCore is /// @param targetOrderEpoch Orders created with a salt less or equal to this value will be cancelled. function cancelOrdersUpTo(uint256 targetOrderEpoch) external + nonReentrant { address makerAddress = getCurrentContextAddress(); // If this function is called via `executeTransaction`, we only update the orderEpoch for the makerAddress/msg.sender combination. @@ -88,7 +89,7 @@ contract MixinExchangeCore is bytes memory signature ) public - nonReentrant + lockMutex returns (FillResults memory fillResults) { fillResults = fillOrderInternal( @@ -104,6 +105,7 @@ contract MixinExchangeCore is /// @param order Order to cancel. Order must be OrderStatus.FILLABLE. function cancelOrder(Order memory order) public + nonReentrant { // Fetch current order status OrderInfo memory orderInfo = getOrderInfo(order); diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol index 25220a673..39c47e6f9 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol @@ -50,7 +50,7 @@ contract MixinMatchOrders is bytes memory rightSignature ) public - nonReentrant + lockMutex returns (LibFillResults.MatchedFillResults memory matchedFillResults) { // We assume that rightOrder.takerAssetData == leftOrder.makerAssetData and rightOrder.makerAssetData == leftOrder.takerAssetData. diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol index f30adcdb8..4eb6a2fa6 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol @@ -19,6 +19,7 @@ pragma solidity 0.4.24; import "../../utils/LibBytes/LibBytes.sol"; +import "../../utils/ReentrancyGuard/ReentrancyGuard.sol"; import "./mixins/MSignatureValidator.sol"; import "./mixins/MTransactions.sol"; import "./interfaces/IWallet.sol"; @@ -26,6 +27,7 @@ import "./interfaces/IValidator.sol"; contract MixinSignatureValidator is + ReentrancyGuard, MSignatureValidator, MTransactions { @@ -69,6 +71,7 @@ contract MixinSignatureValidator is bool approval ) external + nonReentrant { address signerAddress = getCurrentContextAddress(); allowedValidators[signerAddress][validatorAddress] = approval; diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol index ff1cb6995..b0474b110 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol @@ -46,7 +46,7 @@ contract MixinWrapperFunctions is bytes memory signature ) public - nonReentrant + lockMutex returns (FillResults memory fillResults) { fillResults = fillOrKillOrderInternal( @@ -69,6 +69,7 @@ contract MixinWrapperFunctions is bytes memory signature ) public + nonReentrant returns (FillResults memory fillResults) { // ABI encode calldata for `fillOrder` @@ -88,14 +89,7 @@ contract MixinWrapperFunctions is fillOrderCalldata, // write output over input 128 // output size is 128 bytes ) - switch success - case 0 { - mstore(fillResults, 0) - mstore(add(fillResults, 32), 0) - mstore(add(fillResults, 64), 0) - mstore(add(fillResults, 96), 0) - } - case 1 { + if success { mstore(fillResults, mload(fillOrderCalldata)) mstore(add(fillResults, 32), mload(add(fillOrderCalldata, 32))) mstore(add(fillResults, 64), mload(add(fillOrderCalldata, 64))) @@ -117,7 +111,7 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public - nonReentrant + lockMutex returns (FillResults memory totalFillResults) { uint256 ordersLength = orders.length; @@ -144,7 +138,7 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public - nonReentrant + lockMutex returns (FillResults memory totalFillResults) { uint256 ordersLength = orders.length; @@ -172,6 +166,7 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public + nonReentrant returns (FillResults memory totalFillResults) { uint256 ordersLength = orders.length; @@ -197,7 +192,7 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public - nonReentrant + lockMutex returns (FillResults memory totalFillResults) { bytes memory takerAssetData = orders[0].takerAssetData; @@ -242,6 +237,7 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public + nonReentrant returns (FillResults memory totalFillResults) { bytes memory takerAssetData = orders[0].takerAssetData; @@ -285,7 +281,7 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public - nonReentrant + lockMutex returns (FillResults memory totalFillResults) { bytes memory makerAssetData = orders[0].makerAssetData; @@ -338,6 +334,7 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public + nonReentrant returns (FillResults memory totalFillResults) { bytes memory makerAssetData = orders[0].makerAssetData; -- cgit v1.2.3 From 56c3c29febe6264eee7f1c3f1ed8f1dc7c4685c6 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Wed, 22 Aug 2018 18:00:01 -0700 Subject: Update ReentrantERC20Token with new functions and check that revert is occuring for correct reason --- .../ReentrantERC20Token/ReentrantERC20Token.sol | 110 ++++++++++++++------- 1 file changed, 75 insertions(+), 35 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol b/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol index f5c98177f..8d575d09a 100644 --- a/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol +++ b/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol @@ -19,6 +19,7 @@ pragma solidity 0.4.24; pragma experimental ABIEncoderV2; +import "../../utils/LibBytes/LibBytes.sol"; import "../../tokens/ERC20Token/ERC20Token.sol"; import "../../protocol/Exchange/interfaces/IExchange.sol"; import "../../protocol/Exchange/libs/LibOrder.sol"; @@ -27,9 +28,17 @@ import "../../protocol/Exchange/libs/LibOrder.sol"; contract ReentrantERC20Token is ERC20Token { + + using LibBytes for bytes; + // solhint-disable-next-line var-name-mixedcase IExchange internal EXCHANGE; + bytes internal constant REENTRANCY_ILLEGAL_REVERT_REASON = abi.encodeWithSelector( + bytes4(keccak256("Error(string)")), + "REENTRANCY_ILLEGAL" + ); + // All of these functions are potentially vulnerable to reentrancy enum ExchangeFunction { FILL_ORDER, @@ -42,7 +51,10 @@ contract ReentrantERC20Token is MARKET_BUY_ORDERS_NO_THROW, MARKET_SELL_ORDERS, MARKET_SELL_ORDERS_NO_THROW, - MATCH_ORDERS + MATCH_ORDERS, + CANCEL_ORDER, + CANCEL_ORDERS_UP_TO, + SET_SIGNATURE_VALIDATOR_APPROVAL } uint8 internal currentFunctionId = 0; @@ -75,99 +87,127 @@ contract ReentrantERC20Token is { // This order would normally be invalid, but it will be used strictly for testing reentrnacy. // Any reentrancy checks will happen before any other checks that invalidate the order. - LibOrder.Order memory order = LibOrder.Order({ - makerAddress: address(0), - takerAddress: address(0), - feeRecipientAddress: address(0), - senderAddress: address(0), - makerAssetAmount: 0, - takerAssetAmount: 0, - makerFee: 0, - takerFee: 0, - expirationTimeSeconds: 0, - salt: 0, - makerAssetData: "", - takerAssetData: "" - }); + LibOrder.Order memory order; // Initialize remaining null parameters - bytes memory signature = ""; - LibOrder.Order[] memory orders = new LibOrder.Order[](1); - orders[0] = order; - uint256[] memory takerAssetFillAmounts = new uint256[](1); - takerAssetFillAmounts[0] = 0; - bytes[] memory signatures = new bytes[](1); - signatures[0] = signature; - - // Attempt to reenter Exchange by calling function with currentFunctionId + bytes memory signature; + LibOrder.Order[] memory orders; + uint256[] memory takerAssetFillAmounts; + bytes[] memory signatures; + bytes memory calldata; + + // Create calldata for function that corresponds to currentFunctionId if (currentFunctionId == uint8(ExchangeFunction.FILL_ORDER)) { - EXCHANGE.fillOrder( + calldata = abi.encodeWithSelector( + EXCHANGE.fillOrder.selector, order, 0, signature ); } else if (currentFunctionId == uint8(ExchangeFunction.FILL_OR_KILL_ORDER)) { - EXCHANGE.fillOrKillOrder( + calldata = abi.encodeWithSelector( + EXCHANGE.fillOrKillOrder.selector, order, 0, signature ); } else if (currentFunctionId == uint8(ExchangeFunction.FILL_ORDER_NO_THROW)) { - EXCHANGE.fillOrderNoThrow( + calldata = abi.encodeWithSelector( + EXCHANGE.fillOrderNoThrow.selector, order, 0, signature ); } else if (currentFunctionId == uint8(ExchangeFunction.BATCH_FILL_ORDERS)) { - EXCHANGE.batchFillOrders( + calldata = abi.encodeWithSelector( + EXCHANGE.batchFillOrders.selector, orders, takerAssetFillAmounts, signatures ); } else if (currentFunctionId == uint8(ExchangeFunction.BATCH_FILL_OR_KILL_ORDERS)) { - EXCHANGE.batchFillOrKillOrders( + calldata = abi.encodeWithSelector( + EXCHANGE.batchFillOrKillOrders.selector, orders, takerAssetFillAmounts, signatures ); } else if (currentFunctionId == uint8(ExchangeFunction.BATCH_FILL_ORDERS_NO_THROW)) { - EXCHANGE.batchFillOrdersNoThrow( + calldata = abi.encodeWithSelector( + EXCHANGE.batchFillOrdersNoThrow.selector, orders, takerAssetFillAmounts, signatures ); } else if (currentFunctionId == uint8(ExchangeFunction.MARKET_BUY_ORDERS)) { - EXCHANGE.marketBuyOrders( + calldata = abi.encodeWithSelector( + EXCHANGE.marketBuyOrders.selector, orders, 0, signatures ); } else if (currentFunctionId == uint8(ExchangeFunction.MARKET_BUY_ORDERS_NO_THROW)) { - EXCHANGE.marketBuyOrdersNoThrow( + calldata = abi.encodeWithSelector( + EXCHANGE.marketBuyOrdersNoThrow.selector, orders, 0, signatures ); } else if (currentFunctionId == uint8(ExchangeFunction.MARKET_SELL_ORDERS)) { - EXCHANGE.marketSellOrders( + calldata = abi.encodeWithSelector( + EXCHANGE.marketSellOrders.selector, orders, 0, signatures ); } else if (currentFunctionId == uint8(ExchangeFunction.MARKET_SELL_ORDERS_NO_THROW)) { - EXCHANGE.marketSellOrdersNoThrow( + calldata = abi.encodeWithSelector( + EXCHANGE.marketSellOrdersNoThrow.selector, orders, 0, signatures ); } else if (currentFunctionId == uint8(ExchangeFunction.MATCH_ORDERS)) { - EXCHANGE.matchOrders( + calldata = abi.encodeWithSelector( + EXCHANGE.matchOrders.selector, order, order, signature, signature ); + } else if (currentFunctionId == uint8(ExchangeFunction.CANCEL_ORDER)) { + calldata = abi.encodeWithSelector( + EXCHANGE.cancelOrder.selector, + order + ); + } else if (currentFunctionId == uint8(ExchangeFunction.CANCEL_ORDERS_UP_TO)) { + calldata = abi.encodeWithSelector( + EXCHANGE.cancelOrdersUpTo.selector, + 0 + ); + } else if (currentFunctionId == uint8(ExchangeFunction.SET_SIGNATURE_VALIDATOR_APPROVAL)) { + calldata = abi.encodeWithSelector( + EXCHANGE.setSignatureValidatorApproval.selector, + address(0), + false + ); } + + // Call Exchange function, swallow error + address(EXCHANGE).call(calldata); + + // Revert reason is 100 bytes + bytes memory returnData = new bytes(100); + + // Copy return data + assembly { + returndatacopy(add(returnData, 32), 0, 100) + } + + // Revert if function reverted with REENTRANCY_ILLEGAL error + require(!REENTRANCY_ILLEGAL_REVERT_REASON.equals(returnData)); + + // Transfer will return true if function failed for any other reason return true; } } \ No newline at end of file -- cgit v1.2.3 From c28c3db63fb80d5d5e82ccd3b327cb8c408cc6fa Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Thu, 23 Aug 2018 16:43:46 -0700 Subject: Only use one nonReentrant modifier, remove modifier from fillOrderNoThrow variations --- .../2.0.0/protocol/Exchange/MixinExchangeCore.sol | 2 +- .../2.0.0/protocol/Exchange/MixinMatchOrders.sol | 2 +- .../protocol/Exchange/MixinWrapperFunctions.sol | 17 +++++------ .../ReentrantERC20Token/ReentrantERC20Token.sol | 33 +--------------------- .../utils/ReentrancyGuard/ReentrancyGuard.sol | 14 +-------- 5 files changed, 11 insertions(+), 57 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol index f02514fc6..291af3792 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -89,7 +89,7 @@ contract MixinExchangeCore is bytes memory signature ) public - lockMutex + nonReentrant returns (FillResults memory fillResults) { fillResults = fillOrderInternal( diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol index 39c47e6f9..25220a673 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol @@ -50,7 +50,7 @@ contract MixinMatchOrders is bytes memory rightSignature ) public - lockMutex + nonReentrant returns (LibFillResults.MatchedFillResults memory matchedFillResults) { // We assume that rightOrder.takerAssetData == leftOrder.makerAssetData and rightOrder.makerAssetData == leftOrder.takerAssetData. diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol index b0474b110..39fa724cc 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol @@ -33,7 +33,8 @@ contract MixinWrapperFunctions is LibMath, LibFillResults, LibAbiEncoder, - MExchangeCore + MExchangeCore, + MWrapperFunctions { /// @dev Fills the input order. Reverts if exact takerAssetFillAmount not filled. @@ -46,7 +47,7 @@ contract MixinWrapperFunctions is bytes memory signature ) public - lockMutex + nonReentrant returns (FillResults memory fillResults) { fillResults = fillOrKillOrderInternal( @@ -69,7 +70,6 @@ contract MixinWrapperFunctions is bytes memory signature ) public - nonReentrant returns (FillResults memory fillResults) { // ABI encode calldata for `fillOrder` @@ -111,7 +111,7 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public - lockMutex + nonReentrant returns (FillResults memory totalFillResults) { uint256 ordersLength = orders.length; @@ -138,7 +138,7 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public - lockMutex + nonReentrant returns (FillResults memory totalFillResults) { uint256 ordersLength = orders.length; @@ -166,7 +166,6 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public - nonReentrant returns (FillResults memory totalFillResults) { uint256 ordersLength = orders.length; @@ -192,7 +191,7 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public - lockMutex + nonReentrant returns (FillResults memory totalFillResults) { bytes memory takerAssetData = orders[0].takerAssetData; @@ -237,7 +236,6 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public - nonReentrant returns (FillResults memory totalFillResults) { bytes memory takerAssetData = orders[0].takerAssetData; @@ -281,7 +279,7 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public - lockMutex + nonReentrant returns (FillResults memory totalFillResults) { bytes memory makerAssetData = orders[0].makerAssetData; @@ -334,7 +332,6 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public - nonReentrant returns (FillResults memory totalFillResults) { bytes memory makerAssetData = orders[0].makerAssetData; diff --git a/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol b/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol index 8d575d09a..8bfdd2e66 100644 --- a/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol +++ b/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol @@ -40,17 +40,14 @@ contract ReentrantERC20Token is ); // All of these functions are potentially vulnerable to reentrancy + // We do not test any "noThrow" functions because `fillOrderNoThrow` makes a delegatecall to `fillOrder` enum ExchangeFunction { FILL_ORDER, FILL_OR_KILL_ORDER, - FILL_ORDER_NO_THROW, BATCH_FILL_ORDERS, BATCH_FILL_OR_KILL_ORDERS, - BATCH_FILL_ORDERS_NO_THROW, MARKET_BUY_ORDERS, - MARKET_BUY_ORDERS_NO_THROW, MARKET_SELL_ORDERS, - MARKET_SELL_ORDERS_NO_THROW, MATCH_ORDERS, CANCEL_ORDER, CANCEL_ORDERS_UP_TO, @@ -111,13 +108,6 @@ contract ReentrantERC20Token is 0, signature ); - } else if (currentFunctionId == uint8(ExchangeFunction.FILL_ORDER_NO_THROW)) { - calldata = abi.encodeWithSelector( - EXCHANGE.fillOrderNoThrow.selector, - order, - 0, - signature - ); } else if (currentFunctionId == uint8(ExchangeFunction.BATCH_FILL_ORDERS)) { calldata = abi.encodeWithSelector( EXCHANGE.batchFillOrders.selector, @@ -132,13 +122,6 @@ contract ReentrantERC20Token is takerAssetFillAmounts, signatures ); - } else if (currentFunctionId == uint8(ExchangeFunction.BATCH_FILL_ORDERS_NO_THROW)) { - calldata = abi.encodeWithSelector( - EXCHANGE.batchFillOrdersNoThrow.selector, - orders, - takerAssetFillAmounts, - signatures - ); } else if (currentFunctionId == uint8(ExchangeFunction.MARKET_BUY_ORDERS)) { calldata = abi.encodeWithSelector( EXCHANGE.marketBuyOrders.selector, @@ -146,13 +129,6 @@ contract ReentrantERC20Token is 0, signatures ); - } else if (currentFunctionId == uint8(ExchangeFunction.MARKET_BUY_ORDERS_NO_THROW)) { - calldata = abi.encodeWithSelector( - EXCHANGE.marketBuyOrdersNoThrow.selector, - orders, - 0, - signatures - ); } else if (currentFunctionId == uint8(ExchangeFunction.MARKET_SELL_ORDERS)) { calldata = abi.encodeWithSelector( EXCHANGE.marketSellOrders.selector, @@ -160,13 +136,6 @@ contract ReentrantERC20Token is 0, signatures ); - } else if (currentFunctionId == uint8(ExchangeFunction.MARKET_SELL_ORDERS_NO_THROW)) { - calldata = abi.encodeWithSelector( - EXCHANGE.marketSellOrdersNoThrow.selector, - orders, - 0, - signatures - ); } else if (currentFunctionId == uint8(ExchangeFunction.MATCH_ORDERS)) { calldata = abi.encodeWithSelector( EXCHANGE.matchOrders.selector, diff --git a/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol b/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol index 2b980c7ca..1dee512d4 100644 --- a/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol +++ b/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol @@ -23,21 +23,9 @@ contract ReentrancyGuard { // Locked state of mutex bool private locked = false; - /// @dev Functions with this modifier cannot be reentered. - modifier nonReentrant() { - // Ensure mutex is unlocked - require( - !locked, - "REENTRANCY_ILLEGAL" - ); - - // Perform function call - _; - } - /// @dev Functions with this modifer cannot be reentered. The mutex will be locked /// before function execution and unlocked after. - modifier lockMutex() { + modifier nonReentrant() { // Ensure mutex is unlocked require( !locked, -- cgit v1.2.3 From 407f63ef2055e8cd01af010a2e6d3a6c548c9793 Mon Sep 17 00:00:00 2001 From: Greg Hysen Date: Mon, 20 Aug 2018 13:13:38 -0700 Subject: Removed calculateFillResults from matchOrders workflow. Eliminates compounded rounding errors. --- .../2.0.0/protocol/Exchange/MixinMatchOrders.sol | 67 ++++++++++------------ 1 file changed, 29 insertions(+), 38 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol index 25220a673..2012aa6db 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol @@ -109,7 +109,7 @@ contract MixinMatchOrders is rightOrderInfo.orderTakerAssetFilledAmount, matchedFillResults.right ); - + // Settle matched orders. Succeeds or throws. settleMatchedOrders( leftOrder, @@ -169,52 +169,43 @@ contract MixinMatchOrders is // The amount saved by the left maker goes to the taker. // Either the left or right order will be fully filled; possibly both. // The left order is fully filled iff the right order can sell more than left can buy. - // That is: the amount required to fill the left order is less than or equal to - // the amount we can spend from the right order: - // <= * - // <= * / - // * <= * + + // Derive maker asset amounts for left & right orders, given store taker assert amounts uint256 leftTakerAssetAmountRemaining = safeSub(leftOrder.takerAssetAmount, leftOrderTakerAssetFilledAmount); + uint256 leftMakerAssetAmountRemaining = getPartialAmountFloor( + leftOrder.makerAssetAmount, + leftOrder.takerAssetAmount, + leftTakerAssetAmountRemaining + ); uint256 rightTakerAssetAmountRemaining = safeSub(rightOrder.takerAssetAmount, rightOrderTakerAssetFilledAmount); - uint256 leftTakerAssetFilledAmount; - uint256 rightTakerAssetFilledAmount; - if ( - safeMul(leftTakerAssetAmountRemaining, rightOrder.takerAssetAmount) <= - safeMul(rightTakerAssetAmountRemaining, rightOrder.makerAssetAmount) - ) { - // Left order will be fully filled: maximally fill left - leftTakerAssetFilledAmount = leftTakerAssetAmountRemaining; + uint256 rightMakerAssetAmountRemaining = getPartialAmountFloor( + rightOrder.makerAssetAmount, + rightOrder.takerAssetAmount, + rightTakerAssetAmountRemaining + ); - // The right order receives an amount proportional to how much was spent. - rightTakerAssetFilledAmount = getPartialAmountFloor( - rightOrder.takerAssetAmount, - rightOrder.makerAssetAmount, - leftTakerAssetFilledAmount + if (leftTakerAssetAmountRemaining >= rightMakerAssetAmountRemaining) { + // Case 1: Right order is fully filled: maximally fill right + matchedFillResults.right.makerAssetFilledAmount = rightMakerAssetAmountRemaining; + matchedFillResults.right.takerAssetFilledAmount = rightTakerAssetAmountRemaining; + matchedFillResults.left.makerAssetFilledAmount = getPartialAmountFloor( + leftOrder.makerAssetAmount, + leftOrder.takerAssetAmount, + matchedFillResults.right.makerAssetFilledAmount ); + matchedFillResults.left.takerAssetFilledAmount = matchedFillResults.right.makerAssetFilledAmount; } else { - // Right order will be fully filled: maximally fill right - rightTakerAssetFilledAmount = rightTakerAssetAmountRemaining; - - // The left order receives an amount proportional to how much was spent. - leftTakerAssetFilledAmount = getPartialAmountFloor( - rightOrder.makerAssetAmount, + // Case 2: Left order is fully filled: maximall fill left + matchedFillResults.left.makerAssetFilledAmount = leftMakerAssetAmountRemaining; + matchedFillResults.left.takerAssetFilledAmount = leftTakerAssetAmountRemaining; + matchedFillResults.right.makerAssetFilledAmount = matchedFillResults.left.takerAssetFilledAmount; + matchedFillResults.right.takerAssetFilledAmount = getPartialAmountCeil( rightOrder.takerAssetAmount, - rightTakerAssetFilledAmount + rightOrder.makerAssetAmount, + matchedFillResults.left.takerAssetFilledAmount ); } - // Calculate fill results for left order - matchedFillResults.left = calculateFillResults( - leftOrder, - leftTakerAssetFilledAmount - ); - - // Calculate fill results for right order - matchedFillResults.right = calculateFillResults( - rightOrder, - rightTakerAssetFilledAmount - ); - // Calculate amount given to taker matchedFillResults.leftMakerAssetSpreadAmount = safeSub( matchedFillResults.left.makerAssetFilledAmount, -- cgit v1.2.3 From 057891b342cf639b493adcf0a136f7ee421aaaf9 Mon Sep 17 00:00:00 2001 From: Greg Hysen Date: Mon, 20 Aug 2018 13:22:21 -0700 Subject: Added fees to matchOrders (previously in calculateFillResults --- .../2.0.0/protocol/Exchange/MixinMatchOrders.sol | 24 ++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol index 2012aa6db..58f131819 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol @@ -212,6 +212,30 @@ contract MixinMatchOrders is matchedFillResults.right.takerAssetFilledAmount ); + // Compute fees for left order + matchedFillResults.left.makerFeePaid = getPartialAmount( + matchedFillResults.left.takerAssetFilledAmount, + leftOrder.takerAssetAmount, + leftOrder.makerFee + ); + matchedFillResults.left.takerFeePaid = getPartialAmount( + matchedFillResults.left.takerAssetFilledAmount, + leftOrder.takerAssetAmount, + leftOrder.takerFee + ); + + // Compute fees for right order + matchedFillResults.right.makerFeePaid = getPartialAmount( + matchedFillResults.right.takerAssetFilledAmount, + rightOrder.takerAssetAmount, + rightOrder.makerFee + ); + matchedFillResults.right.takerFeePaid = getPartialAmount( + matchedFillResults.right.takerAssetFilledAmount, + rightOrder.takerAssetAmount, + rightOrder.takerFee + ); + // Return fill results return matchedFillResults; } -- cgit v1.2.3 From a32b201afe6c90a6bd06b88a5d512408cd3cb032 Mon Sep 17 00:00:00 2001 From: Greg Hysen Date: Mon, 20 Aug 2018 17:00:08 -0700 Subject: Rounding for fees in match orders addressed, plus example --- .../contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol index 58f131819..b3f376eb8 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol @@ -214,8 +214,8 @@ contract MixinMatchOrders is // Compute fees for left order matchedFillResults.left.makerFeePaid = getPartialAmount( - matchedFillResults.left.takerAssetFilledAmount, - leftOrder.takerAssetAmount, + matchedFillResults.left.makerAssetFilledAmount, + leftOrder.makerAssetAmount, leftOrder.makerFee ); matchedFillResults.left.takerFeePaid = getPartialAmount( @@ -226,8 +226,8 @@ contract MixinMatchOrders is // Compute fees for right order matchedFillResults.right.makerFeePaid = getPartialAmount( - matchedFillResults.right.takerAssetFilledAmount, - rightOrder.takerAssetAmount, + matchedFillResults.right.makerAssetFilledAmount, + rightOrder.makerAssetAmount, rightOrder.makerFee ); matchedFillResults.right.takerFeePaid = getPartialAmount( -- cgit v1.2.3 From 81dc893d1d07e5a8485fb40aa247428cda79d788 Mon Sep 17 00:00:00 2001 From: Greg Hysen Date: Thu, 23 Aug 2018 16:07:39 -0700 Subject: Removed a redundant comment from matchOrders --- packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol index b3f376eb8..d932c743f 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol @@ -165,11 +165,6 @@ contract MixinMatchOrders is pure returns (LibFillResults.MatchedFillResults memory matchedFillResults) { - // We settle orders at the exchange rate of the right order. - // The amount saved by the left maker goes to the taker. - // Either the left or right order will be fully filled; possibly both. - // The left order is fully filled iff the right order can sell more than left can buy. - // Derive maker asset amounts for left & right orders, given store taker assert amounts uint256 leftTakerAssetAmountRemaining = safeSub(leftOrder.takerAssetAmount, leftOrderTakerAssetFilledAmount); uint256 leftMakerAssetAmountRemaining = getPartialAmountFloor( @@ -184,6 +179,7 @@ contract MixinMatchOrders is rightTakerAssetAmountRemaining ); + // Calculate fill results for maker and taker assets if (leftTakerAssetAmountRemaining >= rightMakerAssetAmountRemaining) { // Case 1: Right order is fully filled: maximally fill right matchedFillResults.right.makerAssetFilledAmount = rightMakerAssetAmountRemaining; -- cgit v1.2.3 From a93f95c55ea43bc89d0633190590865d9723b2f9 Mon Sep 17 00:00:00 2001 From: Greg Hysen Date: Thu, 23 Aug 2018 16:16:01 -0700 Subject: Wording in MixinMatchOrders --- packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol index d932c743f..a0696c616 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol @@ -181,7 +181,7 @@ contract MixinMatchOrders is // Calculate fill results for maker and taker assets if (leftTakerAssetAmountRemaining >= rightMakerAssetAmountRemaining) { - // Case 1: Right order is fully filled: maximally fill right + // Case 1: Right order is fully filled matchedFillResults.right.makerAssetFilledAmount = rightMakerAssetAmountRemaining; matchedFillResults.right.takerAssetFilledAmount = rightTakerAssetAmountRemaining; matchedFillResults.left.makerAssetFilledAmount = getPartialAmountFloor( @@ -191,7 +191,7 @@ contract MixinMatchOrders is ); matchedFillResults.left.takerAssetFilledAmount = matchedFillResults.right.makerAssetFilledAmount; } else { - // Case 2: Left order is fully filled: maximall fill left + // Case 2: Left order is fully filled matchedFillResults.left.makerAssetFilledAmount = leftMakerAssetAmountRemaining; matchedFillResults.left.takerAssetFilledAmount = leftTakerAssetAmountRemaining; matchedFillResults.right.makerAssetFilledAmount = matchedFillResults.left.takerAssetFilledAmount; -- cgit v1.2.3 From 0a6f107243eb7df309766cc83942e667ce28e858 Mon Sep 17 00:00:00 2001 From: Greg Hysen Date: Thu, 23 Aug 2018 16:28:03 -0700 Subject: Added temporary @todo to MixinMatchOrders --- .../contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol index a0696c616..8f289ee85 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol @@ -209,24 +209,24 @@ contract MixinMatchOrders is ); // Compute fees for left order - matchedFillResults.left.makerFeePaid = getPartialAmount( + matchedFillResults.left.makerFeePaid = getPartialAmountFloor( matchedFillResults.left.makerAssetFilledAmount, leftOrder.makerAssetAmount, leftOrder.makerFee ); - matchedFillResults.left.takerFeePaid = getPartialAmount( + matchedFillResults.left.takerFeePaid = getPartialAmountFloor( matchedFillResults.left.takerAssetFilledAmount, leftOrder.takerAssetAmount, leftOrder.takerFee ); // Compute fees for right order - matchedFillResults.right.makerFeePaid = getPartialAmount( + matchedFillResults.right.makerFeePaid = getPartialAmountFloor( matchedFillResults.right.makerAssetFilledAmount, rightOrder.makerAssetAmount, rightOrder.makerFee ); - matchedFillResults.right.takerFeePaid = getPartialAmount( + matchedFillResults.right.takerFeePaid = getPartialAmountFloor( matchedFillResults.right.takerAssetFilledAmount, rightOrder.takerAssetAmount, rightOrder.takerFee -- cgit v1.2.3 From ec2e726be0a653465d3c83e640aa4c1556a0f10f Mon Sep 17 00:00:00 2001 From: Greg Hysen Date: Fri, 24 Aug 2018 18:09:32 -0700 Subject: Rephrased some of the math in MixinMatchOrders to improve readability --- packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol index 8f289ee85..226a1bfb6 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol @@ -184,12 +184,12 @@ contract MixinMatchOrders is // Case 1: Right order is fully filled matchedFillResults.right.makerAssetFilledAmount = rightMakerAssetAmountRemaining; matchedFillResults.right.takerAssetFilledAmount = rightTakerAssetAmountRemaining; + matchedFillResults.left.takerAssetFilledAmount = matchedFillResults.right.makerAssetFilledAmount; matchedFillResults.left.makerAssetFilledAmount = getPartialAmountFloor( leftOrder.makerAssetAmount, leftOrder.takerAssetAmount, - matchedFillResults.right.makerAssetFilledAmount + matchedFillResults.left.takerAssetFilledAmount ); - matchedFillResults.left.takerAssetFilledAmount = matchedFillResults.right.makerAssetFilledAmount; } else { // Case 2: Left order is fully filled matchedFillResults.left.makerAssetFilledAmount = leftMakerAssetAmountRemaining; @@ -198,7 +198,7 @@ contract MixinMatchOrders is matchedFillResults.right.takerAssetFilledAmount = getPartialAmountCeil( rightOrder.takerAssetAmount, rightOrder.makerAssetAmount, - matchedFillResults.left.takerAssetFilledAmount + matchedFillResults.right.makerAssetFilledAmount ); } -- cgit v1.2.3 From 878db3b84993d7c9724c0ed8591493a4e2b6cc94 Mon Sep 17 00:00:00 2001 From: Greg Hysen Date: Fri, 24 Aug 2018 18:48:29 -0700 Subject: Added comments to order matching --- .../src/2.0.0/protocol/Exchange/MixinMatchOrders.sol | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol index 226a1bfb6..4b8360c23 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol @@ -179,12 +179,22 @@ contract MixinMatchOrders is rightTakerAssetAmountRemaining ); - // Calculate fill results for maker and taker assets + // Calculate fill results for maker and taker assets: at least one order will be fully filled. + // The maximum amount the left maker can buy is `leftTakerAssetAmountRemaining` + // The maximum amount the right maker can sell is `rightMakerAssetAmountRemaining` + // We have two distinct cases for calculating the fill results: + // Case 1. + // If the left maker can buy more than the right maker can sell, then only the right order is fully filled. + // If the left maker can buy exactly what the right maker can sell, then both orders are fully filled. + // Case 2. + // If the left maker cannot buy more than the right maker can sell, then only the left order is fully filled. if (leftTakerAssetAmountRemaining >= rightMakerAssetAmountRemaining) { // Case 1: Right order is fully filled matchedFillResults.right.makerAssetFilledAmount = rightMakerAssetAmountRemaining; matchedFillResults.right.takerAssetFilledAmount = rightTakerAssetAmountRemaining; matchedFillResults.left.takerAssetFilledAmount = matchedFillResults.right.makerAssetFilledAmount; + // Round down to ensure the maker's exchange rate does not exceed the price specified by the order. + // We favor the maker when the exchange rate must be rounded. matchedFillResults.left.makerAssetFilledAmount = getPartialAmountFloor( leftOrder.makerAssetAmount, leftOrder.takerAssetAmount, @@ -195,6 +205,8 @@ contract MixinMatchOrders is matchedFillResults.left.makerAssetFilledAmount = leftMakerAssetAmountRemaining; matchedFillResults.left.takerAssetFilledAmount = leftTakerAssetAmountRemaining; matchedFillResults.right.makerAssetFilledAmount = matchedFillResults.left.takerAssetFilledAmount; + // Round up to ensure the maker's exchange rate does not exceed the price specified by the order. + // We favor the maker when the exchange rate must be rounded. matchedFillResults.right.takerAssetFilledAmount = getPartialAmountCeil( rightOrder.takerAssetAmount, rightOrder.makerAssetAmount, -- cgit v1.2.3 From f60adbdd723dcf1e5c980c357a8c2c4c337d3a87 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Mon, 27 Aug 2018 10:30:37 -0700 Subject: Remove redundant mstores from fillOrderNoThrow --- .../src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol index a7ff400b9..b5b8fc3e0 100644 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol @@ -69,14 +69,7 @@ contract MixinExchangeWrapper is fillOrderCalldata, // write output over input 128 // output size is 128 bytes ) - switch success - case 0 { - mstore(fillResults, 0) - mstore(add(fillResults, 32), 0) - mstore(add(fillResults, 64), 0) - mstore(add(fillResults, 96), 0) - } - case 1 { + if success { mstore(fillResults, mload(fillOrderCalldata)) mstore(add(fillResults, 32), mload(add(fillOrderCalldata, 32))) mstore(add(fillResults, 64), mload(add(fillOrderCalldata, 64))) -- cgit v1.2.3 From 6a99bfa68ebaf43feed2961401fb89fa4eba9cf3 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Mon, 27 Aug 2018 12:01:58 -0700 Subject: Add clarifying comments --- .../contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol | 1 + packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol | 1 + 2 files changed, 2 insertions(+) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol index b5b8fc3e0..9e816716c 100644 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol @@ -76,6 +76,7 @@ contract MixinExchangeWrapper is mstore(add(fillResults, 96), mload(add(fillOrderCalldata, 96))) } } + // fillResults values will be 0 by default if call was unsuccessful return fillResults; } diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol index 39fa724cc..a5459a21e 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol @@ -96,6 +96,7 @@ contract MixinWrapperFunctions is mstore(add(fillResults, 96), mload(add(fillOrderCalldata, 96))) } } + // fillResults values will be 0 by default if call was unsuccessful return fillResults; } -- cgit v1.2.3 From 14fdb71a716cb95bc1f6933db9057d23f3c41909 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Tue, 28 Aug 2018 13:00:49 -0700 Subject: safeGetPartialAmount (#1035) * Added Test "Should transfer correct amounts when left order is fully filled and values pass isRoundingErrorCeil but fail isRoundingErrorFloor" * Added RoundingError exception to reference function for getPartialAmount * Added RoundingError exception to reference function for getPartialAmount * Added isRoundingErrorCeil to getPartialAmountCeil reference funtion * Computed new values for "Should give right maker a better buy price when correct price is not integral" that does not have a rounding error * Almost all tests for match orders are passing after adding isRoundingErrorCeil check * WIP commit: Added rounding error checks to getPartialAmount * WIP commit: Added rounding error checks to getPartialAmount * Use safe versions of getPartialAmount * Update Exchange internals tests * Run linter * Found new values for "Should transfer correct amounts when right order fill amount deviates from amount derived by `Exchange.fillOrder`" * Fixed merge conflicts * Run all tests * Cleaned up some comments on match Orders tests * Fix tests for geth --- .../2.0.0/protocol/Exchange/MixinExchangeCore.sol | 16 +---- .../2.0.0/protocol/Exchange/MixinMatchOrders.sol | 16 ++--- .../src/2.0.0/protocol/Exchange/libs/LibMath.sol | 82 +++++++++++++++++++++- .../ReentrantERC20Token/ReentrantERC20Token.sol | 1 + .../TestExchangeInternals.sol | 36 ++++++++++ 5 files changed, 128 insertions(+), 23 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol index be163ec97..64b1f7665 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -404,16 +404,6 @@ contract MixinExchangeCore is safeMul(order.makerAssetAmount, takerAssetFilledAmount), "INVALID_FILL_PRICE" ); - - // Validate fill order rounding - require( - !isRoundingErrorFloor( - takerAssetFilledAmount, - order.takerAssetAmount, - order.makerAssetAmount - ), - "ROUNDING_ERROR" - ); } /// @dev Validates context for cancelOrder. Succeeds or throws. @@ -463,17 +453,17 @@ contract MixinExchangeCore is { // Compute proportional transfer amounts fillResults.takerAssetFilledAmount = takerAssetFilledAmount; - fillResults.makerAssetFilledAmount = getPartialAmountFloor( + fillResults.makerAssetFilledAmount = safeGetPartialAmountFloor( takerAssetFilledAmount, order.takerAssetAmount, order.makerAssetAmount ); - fillResults.makerFeePaid = getPartialAmountFloor( + fillResults.makerFeePaid = safeGetPartialAmountFloor( takerAssetFilledAmount, order.takerAssetAmount, order.makerFee ); - fillResults.takerFeePaid = getPartialAmountFloor( + fillResults.takerFeePaid = safeGetPartialAmountFloor( takerAssetFilledAmount, order.takerAssetAmount, order.takerFee diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol index 075a610b5..b4f6bdb26 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol @@ -177,13 +177,13 @@ contract MixinMatchOrders is { // Derive maker asset amounts for left & right orders, given store taker assert amounts uint256 leftTakerAssetAmountRemaining = safeSub(leftOrder.takerAssetAmount, leftOrderTakerAssetFilledAmount); - uint256 leftMakerAssetAmountRemaining = getPartialAmountFloor( + uint256 leftMakerAssetAmountRemaining = safeGetPartialAmountFloor( leftOrder.makerAssetAmount, leftOrder.takerAssetAmount, leftTakerAssetAmountRemaining ); uint256 rightTakerAssetAmountRemaining = safeSub(rightOrder.takerAssetAmount, rightOrderTakerAssetFilledAmount); - uint256 rightMakerAssetAmountRemaining = getPartialAmountFloor( + uint256 rightMakerAssetAmountRemaining = safeGetPartialAmountFloor( rightOrder.makerAssetAmount, rightOrder.takerAssetAmount, rightTakerAssetAmountRemaining @@ -205,7 +205,7 @@ contract MixinMatchOrders is matchedFillResults.left.takerAssetFilledAmount = matchedFillResults.right.makerAssetFilledAmount; // Round down to ensure the maker's exchange rate does not exceed the price specified by the order. // We favor the maker when the exchange rate must be rounded. - matchedFillResults.left.makerAssetFilledAmount = getPartialAmountFloor( + matchedFillResults.left.makerAssetFilledAmount = safeGetPartialAmountFloor( leftOrder.makerAssetAmount, leftOrder.takerAssetAmount, matchedFillResults.left.takerAssetFilledAmount @@ -217,7 +217,7 @@ contract MixinMatchOrders is matchedFillResults.right.makerAssetFilledAmount = matchedFillResults.left.takerAssetFilledAmount; // Round up to ensure the maker's exchange rate does not exceed the price specified by the order. // We favor the maker when the exchange rate must be rounded. - matchedFillResults.right.takerAssetFilledAmount = getPartialAmountCeil( + matchedFillResults.right.takerAssetFilledAmount = safeGetPartialAmountCeil( rightOrder.takerAssetAmount, rightOrder.makerAssetAmount, matchedFillResults.right.makerAssetFilledAmount @@ -231,24 +231,24 @@ contract MixinMatchOrders is ); // Compute fees for left order - matchedFillResults.left.makerFeePaid = getPartialAmountFloor( + matchedFillResults.left.makerFeePaid = safeGetPartialAmountFloor( matchedFillResults.left.makerAssetFilledAmount, leftOrder.makerAssetAmount, leftOrder.makerFee ); - matchedFillResults.left.takerFeePaid = getPartialAmountFloor( + matchedFillResults.left.takerFeePaid = safeGetPartialAmountFloor( matchedFillResults.left.takerAssetFilledAmount, leftOrder.takerAssetAmount, leftOrder.takerFee ); // Compute fees for right order - matchedFillResults.right.makerFeePaid = getPartialAmountFloor( + matchedFillResults.right.makerFeePaid = safeGetPartialAmountFloor( matchedFillResults.right.makerAssetFilledAmount, rightOrder.makerAssetAmount, rightOrder.makerFee ); - matchedFillResults.right.takerFeePaid = getPartialAmountFloor( + matchedFillResults.right.takerFeePaid = safeGetPartialAmountFloor( matchedFillResults.right.takerAssetFilledAmount, rightOrder.takerAssetAmount, rightOrder.takerFee diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol index 0e0fba5d2..57fd53f29 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol @@ -26,11 +26,48 @@ contract LibMath is { /// @dev Calculates partial value given a numerator and denominator rounded down. + /// Reverts if rounding error is >= 0.1% /// @param numerator Numerator. /// @param denominator Denominator. /// @param target Value to calculate partial of. /// @return Partial value of target rounded down. - function getPartialAmountFloor( + function safeGetPartialAmountFloor( + uint256 numerator, + uint256 denominator, + uint256 target + ) + internal + pure + returns (uint256 partialAmount) + { + require( + denominator > 0, + "DIVISION_BY_ZERO" + ); + + require( + !isRoundingErrorFloor( + numerator, + denominator, + target + ), + "ROUNDING_ERROR" + ); + + partialAmount = safeDiv( + safeMul(numerator, target), + denominator + ); + return partialAmount; + } + + /// @dev Calculates partial value given a numerator and denominator rounded down. + /// Reverts if rounding error is >= 0.1% + /// @param numerator Numerator. + /// @param denominator Denominator. + /// @param target Value to calculate partial of. + /// @return Partial value of target rounded up. + function safeGetPartialAmountCeil( uint256 numerator, uint256 denominator, uint256 target @@ -43,7 +80,48 @@ contract LibMath is denominator > 0, "DIVISION_BY_ZERO" ); + + require( + !isRoundingErrorCeil( + numerator, + denominator, + target + ), + "ROUNDING_ERROR" + ); + // safeDiv computes `floor(a / b)`. We use the identity (a, b integer): + // ceil(a / b) = floor((a + b - 1) / b) + // To implement `ceil(a / b)` using safeDiv. + partialAmount = safeDiv( + safeAdd( + safeMul(numerator, target), + safeSub(denominator, 1) + ), + denominator + ); + return partialAmount; + } + + /// @dev Calculates partial value given a numerator and denominator rounded down. + /// @param numerator Numerator. + /// @param denominator Denominator. + /// @param target Value to calculate partial of. + /// @return Partial value of target rounded down. + function getPartialAmountFloor( + uint256 numerator, + uint256 denominator, + uint256 target + ) + internal + pure + returns (uint256 partialAmount) + { + require( + denominator > 0, + "DIVISION_BY_ZERO" + ); + partialAmount = safeDiv( safeMul(numerator, target), denominator @@ -69,7 +147,7 @@ contract LibMath is denominator > 0, "DIVISION_BY_ZERO" ); - + // safeDiv computes `floor(a / b)`. We use the identity (a, b integer): // ceil(a / b) = floor((a + b - 1) / b) // To implement `ceil(a / b)` using safeDiv. diff --git a/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol b/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol index 8bfdd2e66..4f4e28302 100644 --- a/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol +++ b/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol @@ -25,6 +25,7 @@ import "../../protocol/Exchange/interfaces/IExchange.sol"; import "../../protocol/Exchange/libs/LibOrder.sol"; +// solhint-disable no-unused-vars contract ReentrantERC20Token is ERC20Token { diff --git a/packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol b/packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol index da9313e02..27187f8f8 100644 --- a/packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol +++ b/packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol @@ -62,6 +62,42 @@ contract TestExchangeInternals is return calculateFillResults(order, takerAssetFilledAmount); } + /// @dev Calculates partial value given a numerator and denominator. + /// Reverts if rounding error is >= 0.1% + /// @param numerator Numerator. + /// @param denominator Denominator. + /// @param target Value to calculate partial of. + /// @return Partial value of target. + function publicSafeGetPartialAmountFloor( + uint256 numerator, + uint256 denominator, + uint256 target + ) + public + pure + returns (uint256 partialAmount) + { + return safeGetPartialAmountFloor(numerator, denominator, target); + } + + /// @dev Calculates partial value given a numerator and denominator. + /// Reverts if rounding error is >= 0.1% + /// @param numerator Numerator. + /// @param denominator Denominator. + /// @param target Value to calculate partial of. + /// @return Partial value of target. + function publicSafeGetPartialAmountCeil( + uint256 numerator, + uint256 denominator, + uint256 target + ) + public + pure + returns (uint256 partialAmount) + { + return safeGetPartialAmountCeil(numerator, denominator, target); + } + /// @dev Calculates partial value given a numerator and denominator. /// @param numerator Numerator. /// @param denominator Denominator. -- cgit v1.2.3 From f225f9e7c8f59a0ea04f6c9b07493a0458c4f502 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Tue, 28 Aug 2018 13:25:05 -0700 Subject: Making rounding consistent in calculateFillResults --- packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol index 64b1f7665..ff908917d 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -459,8 +459,8 @@ contract MixinExchangeCore is order.makerAssetAmount ); fillResults.makerFeePaid = safeGetPartialAmountFloor( - takerAssetFilledAmount, - order.takerAssetAmount, + fillResults.makerAssetFilledAmount, + order.makerAssetAmount, order.makerFee ); fillResults.takerFeePaid = safeGetPartialAmountFloor( -- cgit v1.2.3 From 1c3b2b7141138f8da82197dfbdbdbfd76e7780b7 Mon Sep 17 00:00:00 2001 From: Greg Hysen Date: Wed, 29 Aug 2018 11:39:52 -0700 Subject: Updated readBytes4 to match spec + added unit tests. These are 3.5/3.6 from audit --- .../src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol | 13 +++++++++++-- packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol | 7 ++++++- 2 files changed, 17 insertions(+), 3 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol b/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol index 8b7333646..e661f2427 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol @@ -105,11 +105,20 @@ contract AssetProxyOwner is uint256 index ) internal + pure returns (bytes4 result) { - require(b.length >= index + 4); + require( + b.length >= index + 4, + "GREATER_OR_EQUAL_TO_4_LENGTH_REQUIRED" + ); + + // Arrays are prefixed by a 32 byte length field + index += 32; + + // Read the bytes4 from array memory assembly { - result := mload(add(b, 32)) + result := mload(add(b, index)) // Solidity does not require us to clean the trailing bytes. // We do it anyway result := and(result, 0xFFFFFFFF00000000000000000000000000000000000000000000000000000000) diff --git a/packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol b/packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol index 504e950a8..93873cbcc 100644 --- a/packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol +++ b/packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol @@ -467,8 +467,13 @@ library LibBytes { b.length >= index + 4, "GREATER_OR_EQUAL_TO_4_LENGTH_REQUIRED" ); + + // Arrays are prefixed by a 32 byte length field + index += 32; + + // Read the bytes4 from array memory assembly { - result := mload(add(b, 32)) + result := mload(add(b, index)) // Solidity does not require us to clean the trailing bytes. // We do it anyway result := and(result, 0xFFFFFFFF00000000000000000000000000000000000000000000000000000000) -- cgit v1.2.3 From 8c803ab232d094c2f69d3b2d44cae11f153d2d5f Mon Sep 17 00:00:00 2001 From: Greg Hysen Date: Wed, 29 Aug 2018 12:25:06 -0700 Subject: Updated comments for ERC20 proxy to clarify how we load the token address from calldata (3.18 from audit) --- .../src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol | 67 +++++++++++++++++++--- .../src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol | 2 + 2 files changed, 60 insertions(+), 9 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol b/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol index 004c3892d..785f3aba9 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol @@ -59,15 +59,64 @@ contract ERC20Proxy is mstore(96, 0) revert(0, 100) } - - /////// Token contract address /////// - // The token address is found as follows: - // * It is stored at offset 4 in `assetData` contents. - // * This is stored at offset 32 from `assetData`. - // * The offset to `assetData` from Params is stored at offset - // 4 in calldata. - // * The offset of Params in calldata is 4. - // So we read location 4 and add 32 + 4 + 4 to it. + + // `transferFrom`. + // The function is marked `external`, so no abi decodeding is done for + // us. Instead, we expect the `calldata` memory to contain the + // following: + // + // | Area | Offset | Length | Contents | + // |----------|--------|---------|-------------------------------------| + // | Header | 0 | 4 | function selector | + // | Params | | 4 * 32 | function parameters: | + // | | 4 | | 1. offset to assetData (*) | + // | | 36 | | 2. from | + // | | 68 | | 3. to | + // | | 100 | | 4. amount | + // | Data | | | assetData: | + // | | 132 | 32 | assetData Length | + // | | 164 | ** | assetData Contents | + // + // (*): offset is computed from start of function parameters, so offset + // by an additional 4 bytes in the calldata. + // + // (**): see table below to compute length of assetData Contents + // + // WARNING: The ABIv2 specification allows additional padding between + // the Params and Data section. This will result in a larger + // offset to assetData. + + // Asset data itself is encoded as follows: + // + // | Area | Offset | Length | Contents | + // |----------|--------|---------|-------------------------------------| + // | Header | 0 | 4 | function selector | + // | Params | | 1 * 32 | function parameters: | + // | | 4 | 12 + 20 | 1. token address | + + // We construct calldata for the `token.transferFrom` ABI. + // The layout of this calldata is in the table below. + // + // | Area | Offset | Length | Contents | + // |----------|--------|---------|-------------------------------------| + // | Header | 0 | 4 | function selector | + // | Params | | 3 * 32 | function parameters: | + // | | 4 | | 1. from | + // | | 36 | | 2. to | + // | | 68 | | 3. amount | + + /////// Read token address from calldata /////// + // * The token address is stored in `assetData`. + // + // * The "offset to assetData" is stored at offset 4 in the calldata (table 1). + // [assetDataOffsetFromParams = calldataload(4)] + // + // * Notes that the "offset to assetData" is relative to the "Params" area of calldata; + // add 4 bytes to account for the length of the "Header" area (table 1). + // [assetDataOffsetFromHeader = assetDataOffsetFromParams + 4] + // + // * The "token address" is offset 32+4=36 bytes into "assetData" (tables 1 & 2). + // [tokenOffset = assetDataOffsetFromHeader + 36 = calldataload(4) + 4 + 36] let token := calldataload(add(calldataload(4), 40)) /////// Setup Header Area /////// diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol b/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol index 9d0bc0f74..caf05b0dd 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol @@ -80,6 +80,8 @@ contract ERC721Proxy is // (*): offset is computed from start of function parameters, so offset // by an additional 4 bytes in the calldata. // + // (**): see table below to compute length of assetData Contents + // // WARNING: The ABIv2 specification allows additional padding between // the Params and Data section. This will result in a larger // offset to assetData. -- cgit v1.2.3 From 5f1c9cfee503bd3fb53fe12bb21f42f3f7981dc7 Mon Sep 17 00:00:00 2001 From: Greg Hysen Date: Wed, 29 Aug 2018 13:15:40 -0700 Subject: Reverted syntax used by readBytes4 in AssetProxyOwner to be compatible with Solidity v0.4.10 --- .../src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol b/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol index e661f2427..7da3d87e2 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol @@ -105,13 +105,9 @@ contract AssetProxyOwner is uint256 index ) internal - pure returns (bytes4 result) { - require( - b.length >= index + 4, - "GREATER_OR_EQUAL_TO_4_LENGTH_REQUIRED" - ); + require(b.length >= index + 4); // Arrays are prefixed by a 32 byte length field index += 32; -- cgit v1.2.3 From dcb12b6ad6485f987d574ee3b20bf24aaf7a7d40 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Wed, 29 Aug 2018 14:05:28 -0700 Subject: Update AssetProxyOwner to 0.4.24 --- .../protocol/AssetProxyOwner/AssetProxyOwner.sol | 49 +++++++--------------- .../TestAssetProxyOwner/TestAssetProxyOwner.sol | 23 +++------- 2 files changed, 21 insertions(+), 51 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol b/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol index 7da3d87e2..bb02d8489 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol @@ -16,15 +16,18 @@ */ -pragma solidity 0.4.10; +pragma solidity 0.4.24; import "../../multisig/MultiSigWalletWithTimeLock.sol"; +import "../../utils/LibBytes/LibBytes.sol"; contract AssetProxyOwner is MultiSigWalletWithTimeLock { + using LibBytes for bytes; + event AssetProxyRegistration(address assetProxyContract, bool isRegistered); // Mapping of AssetProxy contract address => @@ -37,8 +40,14 @@ contract AssetProxyOwner is /// on an approved AssetProxy contract. modifier validRemoveAuthorizedAddressAtIndexTx(uint256 transactionId) { Transaction storage tx = transactions[transactionId]; - require(isAssetProxyRegistered[tx.destination]); - require(readBytes4(tx.data, 0) == REMOVE_AUTHORIZED_ADDRESS_AT_INDEX_SELECTOR); + require( + isAssetProxyRegistered[tx.destination], + "UNREGISTERED_ASSET_PROXY" + ); + require( + tx.data.readBytes4(0) == REMOVE_AUTHORIZED_ADDRESS_AT_INDEX_SELECTOR, + "INVALID_FUNCTION_SELECTOR" + ); _; } @@ -48,7 +57,7 @@ contract AssetProxyOwner is /// @param _assetProxyContracts Array of AssetProxy contract addresses. /// @param _required Number of required confirmations. /// @param _secondsTimeLocked Duration needed after a transaction is confirmed and before it becomes executable, in seconds. - function AssetProxyOwner( + constructor ( address[] memory _owners, address[] memory _assetProxyContracts, uint256 _required, @@ -74,7 +83,7 @@ contract AssetProxyOwner is notNull(assetProxyContract) { isAssetProxyRegistered[assetProxyContract] = isRegistered; - AssetProxyRegistration(assetProxyContract, isRegistered); + emit AssetProxyRegistration(assetProxyContract, isRegistered); } /// @dev Allows execution of `removeAuthorizedAddressAtIndex` without time lock. @@ -89,36 +98,10 @@ contract AssetProxyOwner is tx.executed = true; // solhint-disable-next-line avoid-call-value if (tx.destination.call.value(tx.value)(tx.data)) - Execution(transactionId); + emit Execution(transactionId); else { - ExecutionFailure(transactionId); + emit ExecutionFailure(transactionId); tx.executed = false; } } - - /// @dev Reads an unpadded bytes4 value from a position in a byte array. - /// @param b Byte array containing a bytes4 value. - /// @param index Index in byte array of bytes4 value. - /// @return bytes4 value from byte array. - function readBytes4( - bytes memory b, - uint256 index - ) - internal - returns (bytes4 result) - { - require(b.length >= index + 4); - - // Arrays are prefixed by a 32 byte length field - index += 32; - - // Read the bytes4 from array memory - assembly { - result := mload(add(b, index)) - // Solidity does not require us to clean the trailing bytes. - // We do it anyway - result := and(result, 0xFFFFFFFF00000000000000000000000000000000000000000000000000000000) - } - return result; - } } diff --git a/packages/contracts/src/2.0.0/test/TestAssetProxyOwner/TestAssetProxyOwner.sol b/packages/contracts/src/2.0.0/test/TestAssetProxyOwner/TestAssetProxyOwner.sol index 75e782d43..38ec42a72 100644 --- a/packages/contracts/src/2.0.0/test/TestAssetProxyOwner/TestAssetProxyOwner.sol +++ b/packages/contracts/src/2.0.0/test/TestAssetProxyOwner/TestAssetProxyOwner.sol @@ -16,7 +16,7 @@ */ -pragma solidity 0.4.10; +pragma solidity 0.4.24; import "../../protocol/AssetProxyOwner/AssetProxyOwner.sol"; @@ -26,7 +26,7 @@ contract TestAssetProxyOwner is AssetProxyOwner { - function TestAssetProxyOwner( + constructor ( address[] memory _owners, address[] memory _assetProxyContracts, uint256 _required, @@ -38,6 +38,7 @@ contract TestAssetProxyOwner is function testValidRemoveAuthorizedAddressAtIndexTx(uint256 id) public + view validRemoveAuthorizedAddressAtIndexTx(id) returns (bool) { @@ -50,23 +51,9 @@ contract TestAssetProxyOwner is /// @return Successful if data is a call to `removeAuthorizedAddressAtIndex`. function isFunctionRemoveAuthorizedAddressAtIndex(bytes memory data) public + pure returns (bool) { - return readBytes4(data, 0) == REMOVE_AUTHORIZED_ADDRESS_AT_INDEX_SELECTOR; - } - - /// @dev Reads an unpadded bytes4 value from a position in a byte array. - /// @param b Byte array containing a bytes4 value. - /// @param index Index in byte array of bytes4 value. - /// @return bytes4 value from byte array. - function publicReadBytes4( - bytes memory b, - uint256 index - ) - public - returns (bytes4 result) - { - result = readBytes4(b, index); - return result; + return data.readBytes4(0) == REMOVE_AUTHORIZED_ADDRESS_AT_INDEX_SELECTOR; } } -- cgit v1.2.3 From bf3ab1127d11a7530c1abe8236e149d3d96fd35b Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Wed, 29 Aug 2018 14:42:42 -0700 Subject: Remove unused imports --- packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol | 1 - packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol | 1 - .../src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol | 4 +--- 3 files changed, 1 insertion(+), 5 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol b/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol index 785f3aba9..258443bca 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol @@ -18,7 +18,6 @@ pragma solidity 0.4.24; -import "../../utils/LibBytes/LibBytes.sol"; import "./MixinAuthorizable.sol"; diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol b/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol index caf05b0dd..65b664b8b 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol @@ -18,7 +18,6 @@ pragma solidity 0.4.24; -import "../../utils/LibBytes/LibBytes.sol"; import "./MixinAuthorizable.sol"; diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol index 80475e6e3..e90b62f19 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol @@ -19,7 +19,6 @@ pragma solidity 0.4.24; import "../../utils/Ownable/Ownable.sol"; -import "../../utils/LibBytes/LibBytes.sol"; import "./mixins/MAssetProxyDispatcher.sol"; import "../AssetProxy/interfaces/IAssetProxy.sol"; @@ -28,7 +27,6 @@ contract MixinAssetProxyDispatcher is Ownable, MAssetProxyDispatcher { - using LibBytes for bytes; // Mapping from Asset Proxy Id's to their respective Asset Proxy mapping (bytes4 => IAssetProxy) public assetProxies; @@ -90,7 +88,7 @@ contract MixinAssetProxyDispatcher is "LENGTH_GREATER_THAN_3_REQUIRED" ); - // Lookup assetProxy + // Lookup assetProxy. We do not use `LibBytes.readBytes4` for gas efficiency reasons. bytes4 assetProxyId; assembly { assetProxyId := and(mload( -- cgit v1.2.3 From d80701c2779512324c7a9bef2a87b6f63239d281 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Wed, 29 Aug 2018 15:35:09 -0700 Subject: Fix geth tests --- .../contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol b/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol index bb02d8489..4d00e92d3 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol @@ -68,7 +68,10 @@ contract AssetProxyOwner is { for (uint256 i = 0; i < _assetProxyContracts.length; i++) { address assetProxy = _assetProxyContracts[i]; - require(assetProxy != address(0)); + require( + assetProxy != address(0), + "INVALID_ASSET_PROXY" + ); isAssetProxyRegistered[assetProxy] = true; } } -- cgit v1.2.3 From d0f693398074eaa8b08f76d18a594e86ad81b0ae Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Wed, 29 Aug 2018 17:21:20 -0700 Subject: Add tests for token that returns >32 bytes --- .../DummyMultipleReturnERC20Token.sol | 70 ++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 packages/contracts/src/2.0.0/test/DummyERC20Token/DummyMultipleReturnERC20Token.sol (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyMultipleReturnERC20Token.sol b/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyMultipleReturnERC20Token.sol new file mode 100644 index 000000000..8a8aecae8 --- /dev/null +++ b/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyMultipleReturnERC20Token.sol @@ -0,0 +1,70 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.24; + +import "./DummyERC20Token.sol"; + + +// solhint-disable no-empty-blocks +contract DummyMultipleReturnERC20Token is + DummyERC20Token +{ + + constructor ( + string _name, + string _symbol, + uint256 _decimals, + uint256 _totalSupply + ) + public + DummyERC20Token( + _name, + _symbol, + _decimals, + _totalSupply + ) + {} + + /// @dev send `value` token to `to` from `from` on the condition it is approved by `from` + /// @param _from The address of the sender + /// @param _to The address of the recipient + /// @param _value The amount of token to be transferred + function transferFrom( + address _from, + address _to, + uint256 _value + ) + external + returns (bool) + { + emit Transfer( + _from, + _to, + _value + ); + + // HACK: This contract will not compile if we remove `returns (bool)`, so we manually return 64 bytes (equiavalent to true, true) + assembly { + mstore(0, 1) + mstore(32, 1) + return(0, 64) + } + } +} + -- cgit v1.2.3 From 09b4d5e0e4a7100ab591a8711c10a173fb6ea16c Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Thu, 30 Aug 2018 12:10:24 -0700 Subject: Add cancelOrderInternal, use within batchCancelOrders --- .../2.0.0/protocol/Exchange/MixinExchangeCore.sol | 25 +++++++++++++++------- .../protocol/Exchange/MixinWrapperFunctions.sol | 3 ++- .../protocol/Exchange/mixins/MExchangeCore.sol | 5 +++++ .../ReentrantERC20Token/ReentrantERC20Token.sol | 6 ++++++ 4 files changed, 30 insertions(+), 9 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol index ff908917d..11bbe40fb 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -107,14 +107,7 @@ contract MixinExchangeCore is public nonReentrant { - // Fetch current order status - OrderInfo memory orderInfo = getOrderInfo(order); - - // Validate context - assertValidCancel(order, orderInfo); - - // Perform cancel - updateCancelledState(order, orderInfo.orderHash); + cancelOrderInternal(order); } /// @dev Gets information about an order: status, hash, and amount filled. @@ -236,6 +229,22 @@ contract MixinExchangeCore is return fillResults; } + /// @dev After calling, the order can not be filled anymore. + /// Throws if order is invalid or sender does not have permission to cancel. + /// @param order Order to cancel. Order must be OrderStatus.FILLABLE. + function cancelOrderInternal(Order memory order) + internal + { + // Fetch current order status + OrderInfo memory orderInfo = getOrderInfo(order); + + // Validate context + assertValidCancel(order, orderInfo); + + // Perform cancel + updateCancelledState(order, orderInfo.orderHash); + } + /// @dev Updates state with results of a fill order. /// @param order that was filled. /// @param takerAddress Address of taker who filled the order. diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol index a5459a21e..a149f95c9 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol @@ -377,10 +377,11 @@ contract MixinWrapperFunctions is /// @param orders Array of order specifications. function batchCancelOrders(LibOrder.Order[] memory orders) public + nonReentrant { uint256 ordersLength = orders.length; for (uint256 i = 0; i != ordersLength; i++) { - cancelOrder(orders[i]); + cancelOrderInternal(orders[i]); } } diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol index d85913e0f..742499568 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol @@ -72,6 +72,11 @@ contract MExchangeCore is internal returns (LibFillResults.FillResults memory fillResults); + /// @dev After calling, the order can not be filled anymore. + /// @param order Order struct containing order specifications. + function cancelOrderInternal(LibOrder.Order memory order) + internal; + /// @dev Updates state with results of a fill order. /// @param order that was filled. /// @param takerAddress Address of taker who filled the order. diff --git a/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol b/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol index 4f4e28302..e3311c703 100644 --- a/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol +++ b/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol @@ -51,6 +51,7 @@ contract ReentrantERC20Token is MARKET_SELL_ORDERS, MATCH_ORDERS, CANCEL_ORDER, + BATCH_CANCEL_ORDERS, CANCEL_ORDERS_UP_TO, SET_SIGNATURE_VALIDATOR_APPROVAL } @@ -150,6 +151,11 @@ contract ReentrantERC20Token is EXCHANGE.cancelOrder.selector, order ); + } else if (currentFunctionId == uint8(ExchangeFunction.BATCH_CANCEL_ORDERS)) { + calldata = abi.encodeWithSelector( + EXCHANGE.batchCancelOrders.selector, + orders + ); } else if (currentFunctionId == uint8(ExchangeFunction.CANCEL_ORDERS_UP_TO)) { calldata = abi.encodeWithSelector( EXCHANGE.cancelOrdersUpTo.selector, -- cgit v1.2.3 From cb4fcf4de7b9decad05536f2edf1c1ffd8666a72 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Mon, 3 Sep 2018 20:35:00 -0700 Subject: Revert in Forwarder constructor if ERC20 proxy isn't registered --- .../src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol index 14f191879..54487f726 100644 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol @@ -39,7 +39,6 @@ contract MixinForwarderCore is MExchangeWrapper, IForwarderCore { - using LibBytes for bytes; /// @dev Constructor approves ERC20 proxy to transfer ZRX and WETH on this contract's behalf. @@ -47,10 +46,12 @@ contract MixinForwarderCore is public { address proxyAddress = EXCHANGE.getAssetProxy(ERC20_DATA_ID); - if (proxyAddress != address(0)) { - ETHER_TOKEN.approve(proxyAddress, MAX_UINT); - ZRX_TOKEN.approve(proxyAddress, MAX_UINT); - } + require( + proxyAddress != address(0), + "UNREGISTERED_ASSET_PROXY" + ); + ETHER_TOKEN.approve(proxyAddress, MAX_UINT); + ZRX_TOKEN.approve(proxyAddress, MAX_UINT); } /// @dev Purchases as much of orders' makerAssets as possible by selling up to 95% of transaction's ETH value. -- cgit v1.2.3 From 99fbf384fdcae26eb608f9e0c95a852b7cb7bd99 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Mon, 3 Sep 2018 20:55:37 -0700 Subject: Apply styling fixes --- .../src/2.0.0/extensions/Forwarder/Forwarder.sol | 1 - .../src/2.0.0/extensions/Forwarder/MixinAssets.sol | 1 - .../extensions/Forwarder/MixinExchangeWrapper.sol | 1 - .../src/2.0.0/extensions/Forwarder/MixinWeth.sol | 1 - .../2.0.0/extensions/Forwarder/mixins/MAssets.sol | 1 - .../extensions/OrderValidator/OrderValidator.sol | 4 ++-- .../protocol/AssetProxy/MixinAuthorizable.sol | 1 - .../protocol/AssetProxy/interfaces/IAssetProxy.sol | 1 - .../AssetProxy/interfaces/IAuthorizable.sol | 1 - .../protocol/AssetProxy/mixins/MAuthorizable.sol | 1 - .../protocol/AssetProxyOwner/AssetProxyOwner.sol | 1 - .../src/2.0.0/protocol/Exchange/Exchange.sol | 1 - .../Exchange/MixinAssetProxyDispatcher.sol | 1 - .../2.0.0/protocol/Exchange/MixinExchangeCore.sol | 12 ++++++++++-- .../protocol/Exchange/MixinSignatureValidator.sol | 4 ++-- .../2.0.0/protocol/Exchange/MixinTransactions.sol | 10 ---------- .../protocol/Exchange/MixinWrapperFunctions.sol | 1 - .../src/2.0.0/protocol/Exchange/libs/LibEIP712.sol | 1 + .../protocol/Exchange/libs/LibFillResults.sol | 1 - .../src/2.0.0/protocol/Exchange/libs/LibMath.sol | 13 ++++++++++--- .../src/2.0.0/protocol/Exchange/libs/LibOrder.sol | 1 - .../Exchange/mixins/MAssetProxyDispatcher.sol | 1 - .../protocol/Exchange/mixins/MMatchOrders.sol | 1 - .../protocol/Exchange/mixins/MTransactions.sol | 22 ++++++++++++++++++++++ .../protocol/Exchange/mixins/MWrapperFunctions.sol | 5 +++-- .../DummyMultipleReturnERC20Token.sol | 1 - .../DummyERC20Token/DummyNoReturnERC20Token.sol | 1 - .../DummyERC721Receiver/DummyERC721Receiver.sol | 1 - .../ReentrantERC20Token/ReentrantERC20Token.sol | 1 - .../TestAssetProxyOwner/TestAssetProxyOwner.sol | 1 - .../contracts/src/2.0.0/test/TestLibs/TestLibs.sol | 1 - .../TestSignatureValidator.sol | 1 - .../src/2.0.0/tokens/ERC20Token/ERC20Token.sol | 1 - .../2.0.0/tokens/ERC20Token/MintableERC20Token.sol | 1 - .../ERC20Token/UnlimitedAllowanceERC20Token.sol | 1 - .../tokens/ERC721Token/MintableERC721Token.sol | 1 - .../src/2.0.0/tokens/ZRXToken/ZRXToken.sol | 6 ++++-- .../src/2.0.0/utils/LibBytes/LibBytes.sol | 6 ++++-- .../contracts/src/2.0.0/utils/Ownable/IOwnable.sol | 7 +------ .../contracts/src/2.0.0/utils/Ownable/Ownable.sol | 11 +++-------- .../utils/ReentrancyGuard/ReentrancyGuard.sol | 1 + .../src/2.0.0/utils/SafeMath/SafeMath.sol | 1 + 42 files changed, 64 insertions(+), 67 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/Forwarder.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/Forwarder.sol index 6b17bb29b..94dec40ed 100644 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/Forwarder.sol +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/Forwarder.sol @@ -34,7 +34,6 @@ contract Forwarder is MixinExchangeWrapper, MixinForwarderCore { - constructor ( address _exchange, bytes memory _zrxAssetData, diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinAssets.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinAssets.sol index d6a38aa6e..43efb5ff3 100644 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinAssets.sol +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinAssets.sol @@ -31,7 +31,6 @@ contract MixinAssets is LibConstants, MAssets { - using LibBytes for bytes; bytes4 constant internal ERC20_TRANSFER_SELECTOR = bytes4(keccak256("transfer(address,uint256)")); diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol index 9e816716c..33326c2ab 100644 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol @@ -34,7 +34,6 @@ contract MixinExchangeWrapper is LibConstants, MExchangeWrapper { - /// @dev Fills the input order. /// Returns false if the transaction would otherwise revert. /// @param order Order struct containing order specifications. diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinWeth.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinWeth.sol index 5863b522d..d2814a49b 100644 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinWeth.sol +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinWeth.sol @@ -28,7 +28,6 @@ contract MixinWeth is LibConstants, MWeth { - /// @dev Default payabale function, this allows us to withdraw WETH function () public diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MAssets.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MAssets.sol index 83636432a..9e7f80d97 100644 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MAssets.sol +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MAssets.sol @@ -24,7 +24,6 @@ import "../interfaces/IAssets.sol"; contract MAssets is IAssets { - /// @dev Transfers given amount of asset to sender. /// @param assetData Byte array encoded for the respective asset proxy. /// @param amount Amount of asset to transfer to sender. diff --git a/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol b/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol index a18345245..8bfde3847 100644 --- a/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol +++ b/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol @@ -28,11 +28,11 @@ import "../../utils/LibBytes/LibBytes.sol"; contract OrderValidator { + using LibBytes for bytes; + bytes4 constant internal ERC20_DATA_ID = bytes4(keccak256("ERC20Token(address)")); bytes4 constant internal ERC721_DATA_ID = bytes4(keccak256("ERC721Token(address,uint256)")); - using LibBytes for bytes; - struct TraderInfo { uint256 makerBalance; // Maker's balance of makerAsset uint256 makerAllowance; // Maker's allowance to corresponding AssetProxy diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxy/MixinAuthorizable.sol b/packages/contracts/src/2.0.0/protocol/AssetProxy/MixinAuthorizable.sol index ff4660a31..fe9bbf848 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/MixinAuthorizable.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxy/MixinAuthorizable.sol @@ -26,7 +26,6 @@ contract MixinAuthorizable is Ownable, MAuthorizable { - /// @dev Only authorized addresses can invoke functions with this modifier. modifier onlyAuthorized { require( diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAssetProxy.sol b/packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAssetProxy.sol index 3651dd694..b25d2d75a 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAssetProxy.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAssetProxy.sol @@ -24,7 +24,6 @@ import "./IAuthorizable.sol"; contract IAssetProxy is IAuthorizable { - /// @dev Transfers assets. Either succeeds or throws. /// @param assetData Byte array encoded for the respective asset proxy. /// @param from Address to transfer asset from. diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAuthorizable.sol b/packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAuthorizable.sol index 8fac43a47..ba1d4aa77 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAuthorizable.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAuthorizable.sol @@ -24,7 +24,6 @@ import "../../../utils/Ownable/IOwnable.sol"; contract IAuthorizable is IOwnable { - /// @dev Authorizes an address. /// @param target Address to authorize. function addAuthorizedAddress(address target) diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxy/mixins/MAuthorizable.sol b/packages/contracts/src/2.0.0/protocol/AssetProxy/mixins/MAuthorizable.sol index 8afc8c8d8..d63fb7f6d 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/mixins/MAuthorizable.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxy/mixins/MAuthorizable.sol @@ -24,7 +24,6 @@ import "../interfaces/IAuthorizable.sol"; contract MAuthorizable is IAuthorizable { - // Event logged when a new address is authorized. event AuthorizedAddressAdded( address indexed target, diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol b/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol index 4d00e92d3..5f69198e9 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol @@ -25,7 +25,6 @@ import "../../utils/LibBytes/LibBytes.sol"; contract AssetProxyOwner is MultiSigWalletWithTimeLock { - using LibBytes for bytes; event AssetProxyRegistration(address assetProxyContract, bool isRegistered); diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/Exchange.sol b/packages/contracts/src/2.0.0/protocol/Exchange/Exchange.sol index 7507d3da1..ead36009f 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/Exchange.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/Exchange.sol @@ -37,7 +37,6 @@ contract Exchange is MixinAssetProxyDispatcher, MixinWrapperFunctions { - string constant public VERSION = "2.0.1-alpha"; // Mixins are instantiated in the order they are inherited diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol index e90b62f19..87b09b6b3 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol @@ -27,7 +27,6 @@ contract MixinAssetProxyDispatcher is Ownable, MAssetProxyDispatcher { - // Mapping from Asset Proxy Id's to their respective Asset Proxy mapping (bytes4 => IAssetProxy) public assetProxies; diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol index 11bbe40fb..736dcd0b1 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -75,7 +75,11 @@ contract MixinExchangeCore is // Update orderEpoch orderEpoch[makerAddress][senderAddress] = newOrderEpoch; - emit CancelUpTo(makerAddress, senderAddress, newOrderEpoch); + emit CancelUpTo( + makerAddress, + senderAddress, + newOrderEpoch + ); } /// @dev Fills the input order. @@ -224,7 +228,11 @@ contract MixinExchangeCore is ); // Settle order - settleOrder(order, takerAddress, fillResults); + settleOrder( + order, + takerAddress, + fillResults + ); return fillResults; } diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol index 4eb6a2fa6..176e28351 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol @@ -251,7 +251,7 @@ contract MixinSignatureValidator is walletAddress, // address of Wallet contract cdStart, // pointer to start of input mload(calldata), // length of input - cdStart, // write input over output + cdStart, // write output over input 32 // output size is 32 bytes ) @@ -301,7 +301,7 @@ contract MixinSignatureValidator is validatorAddress, // address of Validator contract cdStart, // pointer to start of input mload(calldata), // length of input - cdStart, // write input over output + cdStart, // write output over input 32 // output size is 32 bytes ) diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol index 4a59b6c0f..3a76ca202 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol @@ -28,7 +28,6 @@ contract MixinTransactions is MSignatureValidator, MTransactions { - // Mapping of transaction hash => executed // This prevents transactions from being executed more than once. mapping (bytes32 => bool) public transactions; @@ -36,15 +35,6 @@ contract MixinTransactions is // Address of current transaction signer address public currentContextAddress; - // Hash for the EIP712 ZeroEx Transaction Schema - bytes32 constant internal EIP712_ZEROEX_TRANSACTION_SCHEMA_HASH = keccak256(abi.encodePacked( - "ZeroExTransaction(", - "uint256 salt,", - "address signerAddress,", - "bytes data", - ")" - )); - /// @dev Executes an exchange method call in the context of signer. /// @param salt Arbitrary number to ensure uniqueness of transaction hash. /// @param signerAddress Address of transaction signer. diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol index a149f95c9..fc3210d90 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol @@ -36,7 +36,6 @@ contract MixinWrapperFunctions is MExchangeCore, MWrapperFunctions { - /// @dev Fills the input order. Reverts if exact takerAssetFillAmount not filled. /// @param order Order struct containing order specifications. /// @param takerAssetFillAmount Desired amount of takerAsset to sell. diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibEIP712.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibEIP712.sol index b02f7632e..203edc1fd 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibEIP712.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibEIP712.sol @@ -20,6 +20,7 @@ pragma solidity 0.4.24; contract LibEIP712 { + // EIP191 header for EIP712 prefix string constant internal EIP191_HEADER = "\x19\x01"; diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibFillResults.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibFillResults.sol index 1b4181d94..659ae9a69 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibFillResults.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibFillResults.sol @@ -24,7 +24,6 @@ import "../../../utils/SafeMath/SafeMath.sol"; contract LibFillResults is SafeMath { - struct FillResults { uint256 makerAssetFilledAmount; // Total amount of makerAsset(s) filled. uint256 takerAssetFilledAmount; // Total amount of takerAsset(s) filled. diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol index 57fd53f29..d8fed176c 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol @@ -24,7 +24,6 @@ import "../../../utils/SafeMath/SafeMath.sol"; contract LibMath is SafeMath { - /// @dev Calculates partial value given a numerator and denominator rounded down. /// Reverts if rounding error is >= 0.1% /// @param numerator Numerator. @@ -206,7 +205,11 @@ contract LibMath is // 1000 * remainder < numerator * target // so we have a rounding error iff: // 1000 * remainder >= numerator * target - uint256 remainder = mulmod(target, numerator, denominator); + uint256 remainder = mulmod( + target, + numerator, + denominator + ); isError = safeMul(1000, remainder) >= safeMul(numerator, target); return isError; } @@ -238,7 +241,11 @@ contract LibMath is return false; } // Compute remainder as before - uint256 remainder = mulmod(target, numerator, denominator); + uint256 remainder = mulmod( + target, + numerator, + denominator + ); // TODO: safeMod remainder = safeSub(denominator, remainder) % denominator; isError = safeMul(1000, remainder) >= safeMul(numerator, target); diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibOrder.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibOrder.sol index 68f4f5f1b..0fe7c2161 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibOrder.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibOrder.sol @@ -24,7 +24,6 @@ import "./LibEIP712.sol"; contract LibOrder is LibEIP712 { - // Hash for the EIP712 Order Schema bytes32 constant internal EIP712_ORDER_SCHEMA_HASH = keccak256(abi.encodePacked( "Order(", diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MAssetProxyDispatcher.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MAssetProxyDispatcher.sol index c6904300a..0ddfca270 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MAssetProxyDispatcher.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MAssetProxyDispatcher.sol @@ -24,7 +24,6 @@ import "../interfaces/IAssetProxyDispatcher.sol"; contract MAssetProxyDispatcher is IAssetProxyDispatcher { - // Logs registration of new asset proxy event AssetProxyRegistered( bytes4 id, // Id of new registered AssetProxy. diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MMatchOrders.sol index a31ec1585..96fa34bc0 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MMatchOrders.sol @@ -26,7 +26,6 @@ import "../interfaces/IMatchOrders.sol"; contract MMatchOrders is IMatchOrders { - /// @dev Validates context for matchOrders. Succeeds or throws. /// @param leftOrder First order to match. /// @param rightOrder Second order to match. diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MTransactions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MTransactions.sol index f2b5e4b16..4f61a4945 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MTransactions.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MTransactions.sol @@ -23,6 +23,28 @@ import "../interfaces/ITransactions.sol"; contract MTransactions is ITransactions { + // Hash for the EIP712 ZeroEx Transaction Schema + bytes32 constant internal EIP712_ZEROEX_TRANSACTION_SCHEMA_HASH = keccak256(abi.encodePacked( + "ZeroExTransaction(", + "uint256 salt,", + "address signerAddress,", + "bytes data", + ")" + )); + + /// @dev Calculates EIP712 hash of the Transaction. + /// @param salt Arbitrary number to ensure uniqueness of transaction hash. + /// @param signerAddress Address of transaction signer. + /// @param data AbiV2 encoded calldata. + /// @return EIP712 hash of the Transaction. + function hashZeroExTransaction( + uint256 salt, + address signerAddress, + bytes memory data + ) + internal + pure + returns (bytes32 result); /// @dev The current function will be called in the context of this address (either 0x transaction signer or `msg.sender`). /// If calling a fill function, this address will represent the taker. diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MWrapperFunctions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MWrapperFunctions.sol index e04d4a429..4adfbde01 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MWrapperFunctions.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MWrapperFunctions.sol @@ -24,8 +24,9 @@ import "../libs/LibFillResults.sol"; import "../interfaces/IWrapperFunctions.sol"; -contract MWrapperFunctions { - +contract MWrapperFunctions is + IWrapperFunctions +{ /// @dev Fills the input order. Reverts if exact takerAssetFillAmount not filled. /// @param order LibOrder.Order struct containing order specifications. /// @param takerAssetFillAmount Desired amount of takerAsset to sell. diff --git a/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyMultipleReturnERC20Token.sol b/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyMultipleReturnERC20Token.sol index 8a8aecae8..733d4437e 100644 --- a/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyMultipleReturnERC20Token.sol +++ b/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyMultipleReturnERC20Token.sol @@ -25,7 +25,6 @@ import "./DummyERC20Token.sol"; contract DummyMultipleReturnERC20Token is DummyERC20Token { - constructor ( string _name, string _symbol, diff --git a/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyNoReturnERC20Token.sol b/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyNoReturnERC20Token.sol index 79156d3dd..e16825a16 100644 --- a/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyNoReturnERC20Token.sol +++ b/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyNoReturnERC20Token.sol @@ -25,7 +25,6 @@ import "./DummyERC20Token.sol"; contract DummyNoReturnERC20Token is DummyERC20Token { - constructor ( string _name, string _symbol, diff --git a/packages/contracts/src/2.0.0/test/DummyERC721Receiver/DummyERC721Receiver.sol b/packages/contracts/src/2.0.0/test/DummyERC721Receiver/DummyERC721Receiver.sol index ac95e47bd..6c8371559 100644 --- a/packages/contracts/src/2.0.0/test/DummyERC721Receiver/DummyERC721Receiver.sol +++ b/packages/contracts/src/2.0.0/test/DummyERC721Receiver/DummyERC721Receiver.sol @@ -24,7 +24,6 @@ import "../../tokens/ERC721Token/IERC721Receiver.sol"; contract DummyERC721Receiver is IERC721Receiver { - // Function selector for ERC721Receiver.onERC721Received // 0x150b7a02 bytes4 constant internal ERC721_RECEIVED = bytes4(keccak256("onERC721Received(address,address,uint256,bytes)")); diff --git a/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol b/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol index e3311c703..99dd47a78 100644 --- a/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol +++ b/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol @@ -29,7 +29,6 @@ import "../../protocol/Exchange/libs/LibOrder.sol"; contract ReentrantERC20Token is ERC20Token { - using LibBytes for bytes; // solhint-disable-next-line var-name-mixedcase diff --git a/packages/contracts/src/2.0.0/test/TestAssetProxyOwner/TestAssetProxyOwner.sol b/packages/contracts/src/2.0.0/test/TestAssetProxyOwner/TestAssetProxyOwner.sol index 38ec42a72..52c66cb56 100644 --- a/packages/contracts/src/2.0.0/test/TestAssetProxyOwner/TestAssetProxyOwner.sol +++ b/packages/contracts/src/2.0.0/test/TestAssetProxyOwner/TestAssetProxyOwner.sol @@ -25,7 +25,6 @@ import "../../protocol/AssetProxyOwner/AssetProxyOwner.sol"; contract TestAssetProxyOwner is AssetProxyOwner { - constructor ( address[] memory _owners, address[] memory _assetProxyContracts, diff --git a/packages/contracts/src/2.0.0/test/TestLibs/TestLibs.sol b/packages/contracts/src/2.0.0/test/TestLibs/TestLibs.sol index c8c58545f..a10f981fc 100644 --- a/packages/contracts/src/2.0.0/test/TestLibs/TestLibs.sol +++ b/packages/contracts/src/2.0.0/test/TestLibs/TestLibs.sol @@ -31,7 +31,6 @@ contract TestLibs is LibFillResults, LibAbiEncoder { - function publicAbiEncodeFillOrder( Order memory order, uint256 takerAssetFillAmount, diff --git a/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol b/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol index e1a610469..ea3e2de59 100644 --- a/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol +++ b/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol @@ -26,7 +26,6 @@ contract TestSignatureValidator is MixinSignatureValidator, MixinTransactions { - function publicIsValidSignature( bytes32 hash, address signer, diff --git a/packages/contracts/src/2.0.0/tokens/ERC20Token/ERC20Token.sol b/packages/contracts/src/2.0.0/tokens/ERC20Token/ERC20Token.sol index 5ef5ee7ce..725d304df 100644 --- a/packages/contracts/src/2.0.0/tokens/ERC20Token/ERC20Token.sol +++ b/packages/contracts/src/2.0.0/tokens/ERC20Token/ERC20Token.sol @@ -24,7 +24,6 @@ import "./IERC20Token.sol"; contract ERC20Token is IERC20Token { - mapping (address => uint256) internal balances; mapping (address => mapping (address => uint256)) internal allowed; diff --git a/packages/contracts/src/2.0.0/tokens/ERC20Token/MintableERC20Token.sol b/packages/contracts/src/2.0.0/tokens/ERC20Token/MintableERC20Token.sol index cd1c7b4bb..9dc924422 100644 --- a/packages/contracts/src/2.0.0/tokens/ERC20Token/MintableERC20Token.sol +++ b/packages/contracts/src/2.0.0/tokens/ERC20Token/MintableERC20Token.sol @@ -26,7 +26,6 @@ contract MintableERC20Token is SafeMath, UnlimitedAllowanceERC20Token { - /// @dev Mints new tokens /// @param _to Address of the beneficiary that will own the minted token /// @param _value Amount of tokens to mint diff --git a/packages/contracts/src/2.0.0/tokens/ERC20Token/UnlimitedAllowanceERC20Token.sol b/packages/contracts/src/2.0.0/tokens/ERC20Token/UnlimitedAllowanceERC20Token.sol index e6f7c063e..2e5bd4348 100644 --- a/packages/contracts/src/2.0.0/tokens/ERC20Token/UnlimitedAllowanceERC20Token.sol +++ b/packages/contracts/src/2.0.0/tokens/ERC20Token/UnlimitedAllowanceERC20Token.sol @@ -24,7 +24,6 @@ import "../ERC20Token/ERC20Token.sol"; contract UnlimitedAllowanceERC20Token is ERC20Token { - uint256 constant internal MAX_UINT = 2**256 - 1; /// @dev ERC20 transferFrom, modified such that an allowance of MAX_UINT represents an unlimited allowance. See https://github.com/ethereum/EIPs/issues/717 diff --git a/packages/contracts/src/2.0.0/tokens/ERC721Token/MintableERC721Token.sol b/packages/contracts/src/2.0.0/tokens/ERC721Token/MintableERC721Token.sol index 85d192779..bc5cd2cc2 100644 --- a/packages/contracts/src/2.0.0/tokens/ERC721Token/MintableERC721Token.sol +++ b/packages/contracts/src/2.0.0/tokens/ERC721Token/MintableERC721Token.sol @@ -24,7 +24,6 @@ import "./ERC721Token.sol"; contract MintableERC721Token is ERC721Token { - /// @dev Function to mint a new token /// Reverts if the given token ID already exists /// @param _to Address of the beneficiary that will own the minted token diff --git a/packages/contracts/src/2.0.0/tokens/ZRXToken/ZRXToken.sol b/packages/contracts/src/2.0.0/tokens/ZRXToken/ZRXToken.sol index 28c0b2fb3..f4855759c 100644 --- a/packages/contracts/src/2.0.0/tokens/ZRXToken/ZRXToken.sol +++ b/packages/contracts/src/2.0.0/tokens/ZRXToken/ZRXToken.sol @@ -22,11 +22,13 @@ pragma solidity 0.4.11; import { UnlimitedAllowanceToken_v1 as UnlimitedAllowanceToken } from "../../../1.0.0/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol"; -contract ZRXToken is UnlimitedAllowanceToken { +contract ZRXToken is + UnlimitedAllowanceToken +{ // solhint-disable const-name-snakecase uint8 constant public decimals = 18; - uint public totalSupply = 10**27; // 1 billion tokens, 18 decimal places + uint256 public totalSupply = 10**27; // 1 billion tokens, 18 decimal places string constant public name = "0x Protocol Token"; string constant public symbol = "ZRX"; // solhint-enableconst-name-snakecase diff --git a/packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol b/packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol index 93873cbcc..369f588ad 100644 --- a/packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol +++ b/packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol @@ -188,7 +188,8 @@ library LibBytes { memCopy( result.contentAddress(), b.contentAddress() + from, - result.length); + result.length + ); return result; } @@ -433,7 +434,8 @@ library LibBytes { pure returns (uint256 result) { - return uint256(readBytes32(b, index)); + result = uint256(readBytes32(b, index)); + return result; } /// @dev Writes a uint256 into a specific position in a byte array. diff --git a/packages/contracts/src/2.0.0/utils/Ownable/IOwnable.sol b/packages/contracts/src/2.0.0/utils/Ownable/IOwnable.sol index 116b8dc89..5deb13497 100644 --- a/packages/contracts/src/2.0.0/utils/Ownable/IOwnable.sol +++ b/packages/contracts/src/2.0.0/utils/Ownable/IOwnable.sol @@ -1,13 +1,8 @@ pragma solidity 0.4.24; -/* - * Ownable - * - * Base contract with an owner. - * Provides onlyOwner modifier, which prevents function from running if it is called by anyone other than the owner. - */ contract IOwnable { + function transferOwnership(address newOwner) public; } diff --git a/packages/contracts/src/2.0.0/utils/Ownable/Ownable.sol b/packages/contracts/src/2.0.0/utils/Ownable/Ownable.sol index aca65aad2..0c830be68 100644 --- a/packages/contracts/src/2.0.0/utils/Ownable/Ownable.sol +++ b/packages/contracts/src/2.0.0/utils/Ownable/Ownable.sol @@ -1,16 +1,11 @@ pragma solidity 0.4.24; -/* - * Ownable - * - * Base contract with an owner. - * Provides onlyOwner modifier, which prevents function from running if it is called by anyone other than the owner. - */ - import "./IOwnable.sol"; -contract Ownable is IOwnable { +contract Ownable is + IOwnable +{ address public owner; constructor () diff --git a/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol b/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol index 1dee512d4..9f98a7a16 100644 --- a/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol +++ b/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol @@ -15,6 +15,7 @@ limitations under the License. */ + pragma solidity 0.4.24; diff --git a/packages/contracts/src/2.0.0/utils/SafeMath/SafeMath.sol b/packages/contracts/src/2.0.0/utils/SafeMath/SafeMath.sol index 63a2a085f..2855edb9d 100644 --- a/packages/contracts/src/2.0.0/utils/SafeMath/SafeMath.sol +++ b/packages/contracts/src/2.0.0/utils/SafeMath/SafeMath.sol @@ -2,6 +2,7 @@ pragma solidity 0.4.24; contract SafeMath { + function safeMul(uint256 a, uint256 b) internal pure -- cgit v1.2.3 From ada5563b1fd2024ef310786eb8b1f32f3ecee4f0 Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Fri, 31 Aug 2018 15:20:58 -0700 Subject: Update to most recent multisig --- .../src/2.0.0/multisig/MultiSigWallet.sol | 90 ++++++++++++++-------- .../2.0.0/multisig/MultiSigWalletWithTimeLock.sol | 55 ++++++------- .../protocol/AssetProxyOwner/AssetProxyOwner.sol | 15 ++-- 3 files changed, 89 insertions(+), 71 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/multisig/MultiSigWallet.sol b/packages/contracts/src/2.0.0/multisig/MultiSigWallet.sol index eb54fe047..516e7391c 100644 --- a/packages/contracts/src/2.0.0/multisig/MultiSigWallet.sol +++ b/packages/contracts/src/2.0.0/multisig/MultiSigWallet.sol @@ -1,13 +1,14 @@ // solhint-disable -pragma solidity ^0.4.10; +pragma solidity ^0.4.15; /// @title Multisignature wallet - Allows multiple parties to agree on transactions before execution. /// @author Stefan George - contract MultiSigWallet { - uint constant public MAX_OWNER_COUNT = 50; - + /* + * Events + */ event Confirmation(address indexed sender, uint indexed transactionId); event Revocation(address indexed sender, uint indexed transactionId); event Submission(uint indexed transactionId); @@ -18,6 +19,14 @@ contract MultiSigWallet { event OwnerRemoval(address indexed owner); event RequirementChange(uint required); + /* + * Constants + */ + uint constant public MAX_OWNER_COUNT = 50; + + /* + * Storage + */ mapping (uint => Transaction) public transactions; mapping (uint => mapping (address => bool)) public confirmations; mapping (address => bool) public isOwner; @@ -32,60 +41,54 @@ contract MultiSigWallet { bool executed; } + /* + * Modifiers + */ modifier onlyWallet() { - if (msg.sender != address(this)) - throw; + require(msg.sender == address(this)); _; } modifier ownerDoesNotExist(address owner) { - if (isOwner[owner]) - throw; + require(!isOwner[owner]); _; } modifier ownerExists(address owner) { - if (!isOwner[owner]) - throw; + require(isOwner[owner]); _; } modifier transactionExists(uint transactionId) { - if (transactions[transactionId].destination == 0) - throw; + require(transactions[transactionId].destination != 0); _; } modifier confirmed(uint transactionId, address owner) { - if (!confirmations[transactionId][owner]) - throw; + require(confirmations[transactionId][owner]); _; } modifier notConfirmed(uint transactionId, address owner) { - if (confirmations[transactionId][owner]) - throw; + require(!confirmations[transactionId][owner]); _; } modifier notExecuted(uint transactionId) { - if (transactions[transactionId].executed) - throw; + require(!transactions[transactionId].executed); _; } modifier notNull(address _address) { - if (_address == 0) - throw; + require(_address != 0); _; } modifier validRequirement(uint ownerCount, uint _required) { - if ( ownerCount > MAX_OWNER_COUNT - || _required > ownerCount - || _required == 0 - || ownerCount == 0) - throw; + require(ownerCount <= MAX_OWNER_COUNT + && _required <= ownerCount + && _required != 0 + && ownerCount != 0); _; } @@ -108,8 +111,7 @@ contract MultiSigWallet { validRequirement(_owners.length, _required) { for (uint i=0; i<_owners.length; i++) { - if (isOwner[_owners[i]] || _owners[i] == 0) - throw; + require(!isOwner[_owners[i]] && _owners[i] != 0); isOwner[_owners[i]] = true; } owners = _owners; @@ -151,7 +153,7 @@ contract MultiSigWallet { /// @dev Allows to replace an owner with a new owner. Transaction has to be sent by wallet. /// @param owner Address of owner to be replaced. - /// @param owner Address of new owner. + /// @param newOwner Address of new owner. function replaceOwner(address owner, address newOwner) public onlyWallet @@ -222,20 +224,44 @@ contract MultiSigWallet { /// @param transactionId Transaction ID. function executeTransaction(uint transactionId) public + ownerExists(msg.sender) + confirmed(transactionId, msg.sender) notExecuted(transactionId) { if (isConfirmed(transactionId)) { - Transaction tx = transactions[transactionId]; - tx.executed = true; - if (tx.destination.call.value(tx.value)(tx.data)) + Transaction storage txn = transactions[transactionId]; + txn.executed = true; + if (external_call(txn.destination, txn.value, txn.data.length, txn.data)) Execution(transactionId); else { ExecutionFailure(transactionId); - tx.executed = false; + txn.executed = false; } } } + // call has been separated into its own function in order to take advantage + // of the Solidity's code generator to produce a loop that copies tx.data into memory. + function external_call(address destination, uint value, uint dataLength, bytes data) internal returns (bool) { + bool result; + assembly { + let x := mload(0x40) // "Allocate" memory for output (0x40 is where "free memory" pointer is stored by convention) + let d := add(data, 32) // First 32 bytes are the padded length of data, so exclude that + result := call( + sub(gas, 34710), // 34710 is the value that solidity is currently emitting + // It includes callGas (700) + callVeryLow (3, to pay for SUB) + callValueTransferGas (9000) + + // callNewAccountGas (25000, in case the destination address does not exist and needs creating) + destination, + value, + d, + dataLength, // Size of the input (in bytes) - this is what fixes the padding problem + x, + 0 // Output is ignored, therefore the output size is zero + ) + } + return result; + } + /// @dev Returns the confirmation status of a transaction. /// @param transactionId Transaction ID. /// @return Confirmation status. @@ -364,4 +390,4 @@ contract MultiSigWallet { for (i=from; i -contract MultiSigWalletWithTimeLock is MultiSigWallet { +contract MultiSigWalletWithTimeLock is + MultiSigWallet +{ - event ConfirmationTimeSet(uint indexed transactionId, uint confirmationTime); - event TimeLockChange(uint secondsTimeLocked); + event ConfirmationTimeSet(uint256 indexed transactionId, uint256 confirmationTime); + event TimeLockChange(uint256 secondsTimeLocked); - uint public secondsTimeLocked; + uint256 public secondsTimeLocked; - mapping (uint => uint) public confirmationTimes; + mapping (uint256 => uint256) public confirmationTimes; - modifier notFullyConfirmed(uint transactionId) { + modifier notFullyConfirmed(uint256 transactionId) { require(!isConfirmed(transactionId)); _; } - modifier fullyConfirmed(uint transactionId) { + modifier fullyConfirmed(uint256 transactionId) { require(isConfirmed(transactionId)); _; } - modifier pastTimeLock(uint transactionId) { + modifier pastTimeLock(uint256 transactionId) { require(block.timestamp >= confirmationTimes[transactionId] + secondsTimeLocked); _; } @@ -56,7 +58,11 @@ contract MultiSigWalletWithTimeLock is MultiSigWallet { /// @param _owners List of initial owners. /// @param _required Number of required confirmations. /// @param _secondsTimeLocked Duration needed after a transaction is confirmed and before it becomes executable, in seconds. - function MultiSigWalletWithTimeLock(address[] _owners, uint _required, uint _secondsTimeLocked) + function MultiSigWalletWithTimeLock( + address[] _owners, + uint256 _required, + uint256 _secondsTimeLocked + ) public MultiSigWallet(_owners, _required) { @@ -65,7 +71,7 @@ contract MultiSigWalletWithTimeLock is MultiSigWallet { /// @dev Changes the duration of the time lock for transactions. /// @param _secondsTimeLocked Duration needed after a transaction is confirmed and before it becomes executable, in seconds. - function changeTimeLock(uint _secondsTimeLocked) + function changeTimeLock(uint256 _secondsTimeLocked) public onlyWallet { @@ -75,7 +81,7 @@ contract MultiSigWalletWithTimeLock is MultiSigWallet { /// @dev Allows an owner to confirm a transaction. /// @param transactionId Transaction ID. - function confirmTransaction(uint transactionId) + function confirmTransaction(uint256 transactionId) public ownerExists(msg.sender) transactionExists(transactionId) @@ -89,34 +95,21 @@ contract MultiSigWalletWithTimeLock is MultiSigWallet { } } - /// @dev Allows an owner to revoke a confirmation for a transaction. - /// @param transactionId Transaction ID. - function revokeConfirmation(uint transactionId) - public - ownerExists(msg.sender) - confirmed(transactionId, msg.sender) - notExecuted(transactionId) - notFullyConfirmed(transactionId) - { - confirmations[transactionId][msg.sender] = false; - Revocation(msg.sender, transactionId); - } - /// @dev Allows anyone to execute a confirmed transaction. /// @param transactionId Transaction ID. - function executeTransaction(uint transactionId) + function executeTransaction(uint256 transactionId) public notExecuted(transactionId) fullyConfirmed(transactionId) pastTimeLock(transactionId) { - Transaction storage tx = transactions[transactionId]; - tx.executed = true; - if (tx.destination.call.value(tx.value)(tx.data)) + Transaction storage txn = transactions[transactionId]; + txn.executed = true; + if (external_call(txn.destination, txn.value, txn.data.length, txn.data)) Execution(transactionId); else { ExecutionFailure(transactionId); - tx.executed = false; + txn.executed = false; } } @@ -125,7 +118,7 @@ contract MultiSigWalletWithTimeLock is MultiSigWallet { */ /// @dev Sets the time of when a submission first passed. - function setConfirmationTime(uint transactionId, uint confirmationTime) + function setConfirmationTime(uint256 transactionId, uint256 confirmationTime) internal { confirmationTimes[transactionId] = confirmationTime; diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol b/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol index 5f69198e9..6ec710f25 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol @@ -38,13 +38,13 @@ contract AssetProxyOwner is /// @dev Function will revert if the transaction does not call `removeAuthorizedAddressAtIndex` /// on an approved AssetProxy contract. modifier validRemoveAuthorizedAddressAtIndexTx(uint256 transactionId) { - Transaction storage tx = transactions[transactionId]; + Transaction storage txn = transactions[transactionId]; require( - isAssetProxyRegistered[tx.destination], + isAssetProxyRegistered[txn.destination], "UNREGISTERED_ASSET_PROXY" ); require( - tx.data.readBytes4(0) == REMOVE_AUTHORIZED_ADDRESS_AT_INDEX_SELECTOR, + txn.data.readBytes4(0) == REMOVE_AUTHORIZED_ADDRESS_AT_INDEX_SELECTOR, "INVALID_FUNCTION_SELECTOR" ); _; @@ -96,14 +96,13 @@ contract AssetProxyOwner is fullyConfirmed(transactionId) validRemoveAuthorizedAddressAtIndexTx(transactionId) { - Transaction storage tx = transactions[transactionId]; - tx.executed = true; - // solhint-disable-next-line avoid-call-value - if (tx.destination.call.value(tx.value)(tx.data)) + Transaction storage txn = transactions[transactionId]; + txn.executed = true; + if (external_call(txn.destination, txn.value, txn.data.length, txn.data)) emit Execution(transactionId); else { emit ExecutionFailure(transactionId); - tx.executed = false; + txn.executed = false; } } } -- cgit v1.2.3 From 7a8ab6fbe806970176364b914790f2ce348194ff Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Sat, 1 Sep 2018 19:11:00 -0700 Subject: Update MultiSigWalletWithTimeLock to 0.4.24 --- .../2.0.0/multisig/MultiSigWalletWithTimeLock.sol | 44 +++++++++++----------- .../protocol/AssetProxyOwner/AssetProxyOwner.sol | 4 +- 2 files changed, 24 insertions(+), 24 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/multisig/MultiSigWalletWithTimeLock.sol b/packages/contracts/src/2.0.0/multisig/MultiSigWalletWithTimeLock.sol index cb86f2cad..9513d3b30 100644 --- a/packages/contracts/src/2.0.0/multisig/MultiSigWalletWithTimeLock.sol +++ b/packages/contracts/src/2.0.0/multisig/MultiSigWalletWithTimeLock.sol @@ -16,18 +16,17 @@ */ -// solhint-disable -pragma solidity ^0.4.15; +pragma solidity 0.4.24; import "./MultiSigWallet.sol"; /// @title Multisignature wallet with time lock- Allows multiple parties to execute a transaction after a time lock has passed. /// @author Amir Bandeali - +// solhint-disable not-rely-on-time contract MultiSigWalletWithTimeLock is MultiSigWallet { - event ConfirmationTimeSet(uint256 indexed transactionId, uint256 confirmationTime); event TimeLockChange(uint256 secondsTimeLocked); @@ -36,29 +35,34 @@ contract MultiSigWalletWithTimeLock is mapping (uint256 => uint256) public confirmationTimes; modifier notFullyConfirmed(uint256 transactionId) { - require(!isConfirmed(transactionId)); + require( + !isConfirmed(transactionId), + "TX_FULLY_CONFIRMED" + ); _; } modifier fullyConfirmed(uint256 transactionId) { - require(isConfirmed(transactionId)); + require( + isConfirmed(transactionId), + "TX_NOT_FULLY_CONFIRMED" + ); _; } modifier pastTimeLock(uint256 transactionId) { - require(block.timestamp >= confirmationTimes[transactionId] + secondsTimeLocked); + require( + block.timestamp >= confirmationTimes[transactionId] + secondsTimeLocked, + "TIME_LOCK_INCOMPLETE" + ); _; } - /* - * Public functions - */ - /// @dev Contract constructor sets initial owners, required number of confirmations, and time lock. /// @param _owners List of initial owners. /// @param _required Number of required confirmations. /// @param _secondsTimeLocked Duration needed after a transaction is confirmed and before it becomes executable, in seconds. - function MultiSigWalletWithTimeLock( + constructor ( address[] _owners, uint256 _required, uint256 _secondsTimeLocked @@ -76,7 +80,7 @@ contract MultiSigWalletWithTimeLock is onlyWallet { secondsTimeLocked = _secondsTimeLocked; - TimeLockChange(_secondsTimeLocked); + emit TimeLockChange(_secondsTimeLocked); } /// @dev Allows an owner to confirm a transaction. @@ -89,7 +93,7 @@ contract MultiSigWalletWithTimeLock is notFullyConfirmed(transactionId) { confirmations[transactionId][msg.sender] = true; - Confirmation(msg.sender, transactionId); + emit Confirmation(msg.sender, transactionId); if (isConfirmed(transactionId)) { setConfirmationTime(transactionId, block.timestamp); } @@ -105,23 +109,19 @@ contract MultiSigWalletWithTimeLock is { Transaction storage txn = transactions[transactionId]; txn.executed = true; - if (external_call(txn.destination, txn.value, txn.data.length, txn.data)) - Execution(transactionId); - else { - ExecutionFailure(transactionId); + if (external_call(txn.destination, txn.value, txn.data.length, txn.data)) { + emit Execution(transactionId); + } else { + emit ExecutionFailure(transactionId); txn.executed = false; } } - /* - * Internal functions - */ - /// @dev Sets the time of when a submission first passed. function setConfirmationTime(uint256 transactionId, uint256 confirmationTime) internal { confirmationTimes[transactionId] = confirmationTime; - ConfirmationTimeSet(transactionId, confirmationTime); + emit ConfirmationTimeSet(transactionId, confirmationTime); } } diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol b/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol index 6ec710f25..edb788fab 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol @@ -98,9 +98,9 @@ contract AssetProxyOwner is { Transaction storage txn = transactions[transactionId]; txn.executed = true; - if (external_call(txn.destination, txn.value, txn.data.length, txn.data)) + if (external_call(txn.destination, txn.value, txn.data.length, txn.data)) { emit Execution(transactionId); - else { + } else { emit ExecutionFailure(transactionId); txn.executed = false; } -- cgit v1.2.3 From e34b1f2f8b0aa32c95192c5c7fbbdecef2b3953a Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Sun, 2 Sep 2018 10:39:22 -0700 Subject: Remove TODOs that will not be addressed --- .../contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol | 2 +- .../contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol | 2 +- packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol | 1 - 3 files changed, 2 insertions(+), 3 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol index 33326c2ab..fea9a53c2 100644 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol +++ b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol @@ -60,7 +60,7 @@ contract MixinExchangeWrapper is // Call `fillOrder` and handle any exceptions gracefully assembly { let success := call( - gas, // forward all gas, TODO: look into gas consumption of assert/throw + gas, // forward all gas exchange, // call address of Exchange contract 0, // transfer 0 wei add(fillOrderCalldata, 32), // pointer to start of input (skip array length in first 32 bytes) diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol index fc3210d90..cddff0e5f 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol @@ -81,7 +81,7 @@ contract MixinWrapperFunctions is // Delegate to `fillOrder` and handle any exceptions gracefully assembly { let success := delegatecall( - gas, // forward all gas, TODO: look into gas consumption of assert/throw + gas, // forward all gas address, // call address of this contract add(fillOrderCalldata, 32), // pointer to start of input (skip array length in first 32 bytes) mload(fillOrderCalldata), // length of input diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol index d8fed176c..c0b85ea10 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol @@ -246,7 +246,6 @@ contract LibMath is numerator, denominator ); - // TODO: safeMod remainder = safeSub(denominator, remainder) % denominator; isError = safeMul(1000, remainder) >= safeMul(numerator, target); return isError; -- cgit v1.2.3 From 81c48872415998e53ad653aabf183e18257ec327 Mon Sep 17 00:00:00 2001 From: Alex Browne Date: Mon, 1 Oct 2018 16:44:13 -0700 Subject: Move generated contract wrappers and artifacts into contracts package --- .../contracts/src/1.0.0/Arbitrage/Arbitrage.sol | 114 ---- .../src/1.0.0/ERC20Token/ERC20Token_v1.sol | 44 -- .../src/1.0.0/EtherDelta/AccountLevels.sol | 11 - .../contracts/src/1.0.0/EtherDelta/EtherDelta.sol | 168 ----- .../contracts/src/1.0.0/Exchange/Exchange_v1.sol | 602 ---------------- .../contracts/src/1.0.0/Exchange/IExchange_v1.sol | 226 ------ ...etWithTimeLockExceptRemoveAuthorizedAddress.sol | 82 --- .../contracts/src/1.0.0/Ownable/IOwnable_v1.sol | 18 - .../contracts/src/1.0.0/Ownable/Ownable_v1.sol | 27 - .../contracts/src/1.0.0/SafeMath/SafeMath_v1.sol | 73 -- packages/contracts/src/1.0.0/Token/Token_v1.sol | 39 -- .../src/1.0.0/TokenRegistry/ITokenRegistery.sol | 195 ------ .../src/1.0.0/TokenRegistry/TokenRegistry.sol | 308 --------- .../TokenTransferProxy/TokenTransferProxy_v1.sol | 115 ---- .../UnlimitedAllowanceToken_v1.sol | 52 -- .../examples/ExchangeWrapper/ExchangeWrapper.sol | 100 --- .../src/2.0.0/examples/Validator/Validator.sol | 56 -- .../contracts/src/2.0.0/examples/Wallet/Wallet.sol | 65 -- .../src/2.0.0/examples/Whitelist/Whitelist.sol | 136 ---- .../src/2.0.0/extensions/Forwarder/Forwarder.sol | 50 -- .../src/2.0.0/extensions/Forwarder/MixinAssets.sol | 143 ---- .../extensions/Forwarder/MixinExchangeWrapper.sol | 256 ------- .../extensions/Forwarder/MixinForwarderCore.sol | 214 ------ .../src/2.0.0/extensions/Forwarder/MixinWeth.sol | 113 --- .../extensions/Forwarder/interfaces/IAssets.sol | 34 - .../extensions/Forwarder/interfaces/IForwarder.sol | 30 - .../Forwarder/interfaces/IForwarderCore.sol | 80 --- .../extensions/Forwarder/libs/LibConstants.sol | 62 -- .../Forwarder/libs/LibForwarderErrors.sol | 34 - .../2.0.0/extensions/Forwarder/mixins/MAssets.sol | 53 -- .../Forwarder/mixins/MExchangeWrapper.sol | 87 --- .../2.0.0/extensions/Forwarder/mixins/MWeth.sol | 41 -- .../extensions/OrderValidator/OrderValidator.sol | 218 ------ .../src/2.0.0/multisig/MultiSigWallet.sol | 393 ----------- .../2.0.0/multisig/MultiSigWalletWithTimeLock.sol | 127 ---- .../src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol | 184 ----- .../src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol | 171 ----- .../protocol/AssetProxy/MixinAuthorizable.sol | 117 ---- .../protocol/AssetProxy/interfaces/IAssetData.sol | 40 -- .../protocol/AssetProxy/interfaces/IAssetProxy.sol | 46 -- .../AssetProxy/interfaces/IAuthorizable.sol | 52 -- .../AssetProxy/libs/LibAssetProxyErrors.sol | 38 -- .../protocol/AssetProxy/mixins/MAuthorizable.sol | 41 -- .../protocol/AssetProxyOwner/AssetProxyOwner.sol | 108 --- .../src/2.0.0/protocol/Exchange/Exchange.sol | 53 -- .../Exchange/MixinAssetProxyDispatcher.sol | 174 ----- .../2.0.0/protocol/Exchange/MixinExchangeCore.sol | 529 -------------- .../2.0.0/protocol/Exchange/MixinMatchOrders.sol | 335 --------- .../protocol/Exchange/MixinSignatureValidator.sol | 324 --------- .../2.0.0/protocol/Exchange/MixinTransactions.sol | 152 ----- .../protocol/Exchange/MixinWrapperFunctions.sol | 426 ------------ .../Exchange/interfaces/IAssetProxyDispatcher.sol | 37 - .../protocol/Exchange/interfaces/IExchange.sol | 38 -- .../protocol/Exchange/interfaces/IExchangeCore.sol | 60 -- .../protocol/Exchange/interfaces/IMatchOrders.sol | 44 -- .../Exchange/interfaces/ISignatureValidator.sol | 57 -- .../protocol/Exchange/interfaces/ITransactions.sol | 35 - .../protocol/Exchange/interfaces/IValidator.sol | 37 - .../2.0.0/protocol/Exchange/interfaces/IWallet.sol | 35 - .../Exchange/interfaces/IWrapperFunctions.sol | 160 ----- .../2.0.0/protocol/Exchange/libs/LibAbiEncoder.sol | 215 ------ .../2.0.0/protocol/Exchange/libs/LibConstants.sol | 49 -- .../src/2.0.0/protocol/Exchange/libs/LibEIP712.sol | 87 --- .../protocol/Exchange/libs/LibExchangeErrors.sol | 70 -- .../protocol/Exchange/libs/LibFillResults.sol | 53 -- .../src/2.0.0/protocol/Exchange/libs/LibMath.sol | 253 ------- .../src/2.0.0/protocol/Exchange/libs/LibOrder.sol | 145 ---- .../Exchange/mixins/MAssetProxyDispatcher.sol | 45 -- .../protocol/Exchange/mixins/MExchangeCore.sol | 157 ----- .../protocol/Exchange/mixins/MMatchOrders.sol | 58 -- .../Exchange/mixins/MSignatureValidator.sol | 75 -- .../protocol/Exchange/mixins/MTransactions.sol | 58 -- .../protocol/Exchange/mixins/MWrapperFunctions.sol | 41 -- .../2.0.0/test/DummyERC20Token/DummyERC20Token.sol | 77 --- .../DummyMultipleReturnERC20Token.sol | 69 -- .../DummyERC20Token/DummyNoReturnERC20Token.sol | 115 ---- .../DummyERC721Receiver/DummyERC721Receiver.sol | 67 -- .../DummyERC721Receiver/InvalidERC721Receiver.sol | 66 -- .../test/DummyERC721Token/DummyERC721Token.sol | 63 -- .../ReentrantERC20Token/ReentrantERC20Token.sol | 188 ----- .../TestAssetProxyDispatcher.sol | 37 - .../TestAssetProxyOwner/TestAssetProxyOwner.sol | 58 -- .../src/2.0.0/test/TestConstants/TestConstants.sol | 57 -- .../TestExchangeInternals.sol | 191 ------ .../src/2.0.0/test/TestLibBytes/TestLibBytes.sol | 269 -------- .../contracts/src/2.0.0/test/TestLibs/TestLibs.sol | 152 ----- .../TestSignatureValidator.sol | 45 -- .../TestStaticCallReceiver.sol | 81 --- .../src/2.0.0/tokens/ERC20Token/ERC20Token.sol | 148 ---- .../src/2.0.0/tokens/ERC20Token/IERC20Token.sol | 87 --- .../2.0.0/tokens/ERC20Token/MintableERC20Token.sol | 60 -- .../ERC20Token/UnlimitedAllowanceERC20Token.sol | 70 -- .../src/2.0.0/tokens/ERC721Token/ERC721Token.sol | 277 -------- .../2.0.0/tokens/ERC721Token/IERC721Receiver.sol | 44 -- .../src/2.0.0/tokens/ERC721Token/IERC721Token.sol | 158 ----- .../tokens/ERC721Token/MintableERC721Token.sol | 82 --- .../src/2.0.0/tokens/EtherToken/IEtherToken.sol | 33 - .../src/2.0.0/tokens/EtherToken/WETH9.sol | 758 --------------------- .../src/2.0.0/tokens/ZRXToken/ZRXToken.sol | 41 -- .../src/2.0.0/utils/LibBytes/LibBytes.sol | 567 --------------- .../contracts/src/2.0.0/utils/Ownable/IOwnable.sol | 8 - .../contracts/src/2.0.0/utils/Ownable/Ownable.sol | 33 - .../utils/ReentrancyGuard/ReentrancyGuard.sol | 45 -- .../src/2.0.0/utils/SafeMath/SafeMath.sol | 87 --- packages/contracts/src/artifacts/index.ts | 78 +++ packages/contracts/src/index.ts | 4 + packages/contracts/src/wrappers/index.ts | 33 + 107 files changed, 115 insertions(+), 12998 deletions(-) delete mode 100644 packages/contracts/src/1.0.0/Arbitrage/Arbitrage.sol delete mode 100644 packages/contracts/src/1.0.0/ERC20Token/ERC20Token_v1.sol delete mode 100644 packages/contracts/src/1.0.0/EtherDelta/AccountLevels.sol delete mode 100644 packages/contracts/src/1.0.0/EtherDelta/EtherDelta.sol delete mode 100644 packages/contracts/src/1.0.0/Exchange/Exchange_v1.sol delete mode 100644 packages/contracts/src/1.0.0/Exchange/IExchange_v1.sol delete mode 100644 packages/contracts/src/1.0.0/MultiSigWalletWithTImeLockExceptRemoveAuthorizedAddress/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol delete mode 100644 packages/contracts/src/1.0.0/Ownable/IOwnable_v1.sol delete mode 100644 packages/contracts/src/1.0.0/Ownable/Ownable_v1.sol delete mode 100644 packages/contracts/src/1.0.0/SafeMath/SafeMath_v1.sol delete mode 100644 packages/contracts/src/1.0.0/Token/Token_v1.sol delete mode 100644 packages/contracts/src/1.0.0/TokenRegistry/ITokenRegistery.sol delete mode 100644 packages/contracts/src/1.0.0/TokenRegistry/TokenRegistry.sol delete mode 100644 packages/contracts/src/1.0.0/TokenTransferProxy/TokenTransferProxy_v1.sol delete mode 100644 packages/contracts/src/1.0.0/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol delete mode 100644 packages/contracts/src/2.0.0/examples/ExchangeWrapper/ExchangeWrapper.sol delete mode 100644 packages/contracts/src/2.0.0/examples/Validator/Validator.sol delete mode 100644 packages/contracts/src/2.0.0/examples/Wallet/Wallet.sol delete mode 100644 packages/contracts/src/2.0.0/examples/Whitelist/Whitelist.sol delete mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/Forwarder.sol delete mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/MixinAssets.sol delete mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol delete mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol delete mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/MixinWeth.sol delete mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IAssets.sol delete mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IForwarder.sol delete mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IForwarderCore.sol delete mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/libs/LibConstants.sol delete mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/libs/LibForwarderErrors.sol delete mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MAssets.sol delete mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MExchangeWrapper.sol delete mode 100644 packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MWeth.sol delete mode 100644 packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol delete mode 100644 packages/contracts/src/2.0.0/multisig/MultiSigWallet.sol delete mode 100644 packages/contracts/src/2.0.0/multisig/MultiSigWalletWithTimeLock.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/AssetProxy/MixinAuthorizable.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAssetData.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAssetProxy.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAuthorizable.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/AssetProxy/libs/LibAssetProxyErrors.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/AssetProxy/mixins/MAuthorizable.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/Exchange.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IAssetProxyDispatcher.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IExchange.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IExchangeCore.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IMatchOrders.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/interfaces/ISignatureValidator.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/interfaces/ITransactions.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IValidator.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IWallet.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IWrapperFunctions.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/libs/LibAbiEncoder.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/libs/LibConstants.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/libs/LibEIP712.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/libs/LibExchangeErrors.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/libs/LibFillResults.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/libs/LibOrder.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/mixins/MAssetProxyDispatcher.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/mixins/MMatchOrders.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/mixins/MTransactions.sol delete mode 100644 packages/contracts/src/2.0.0/protocol/Exchange/mixins/MWrapperFunctions.sol delete mode 100644 packages/contracts/src/2.0.0/test/DummyERC20Token/DummyERC20Token.sol delete mode 100644 packages/contracts/src/2.0.0/test/DummyERC20Token/DummyMultipleReturnERC20Token.sol delete mode 100644 packages/contracts/src/2.0.0/test/DummyERC20Token/DummyNoReturnERC20Token.sol delete mode 100644 packages/contracts/src/2.0.0/test/DummyERC721Receiver/DummyERC721Receiver.sol delete mode 100644 packages/contracts/src/2.0.0/test/DummyERC721Receiver/InvalidERC721Receiver.sol delete mode 100644 packages/contracts/src/2.0.0/test/DummyERC721Token/DummyERC721Token.sol delete mode 100644 packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol delete mode 100644 packages/contracts/src/2.0.0/test/TestAssetProxyDispatcher/TestAssetProxyDispatcher.sol delete mode 100644 packages/contracts/src/2.0.0/test/TestAssetProxyOwner/TestAssetProxyOwner.sol delete mode 100644 packages/contracts/src/2.0.0/test/TestConstants/TestConstants.sol delete mode 100644 packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol delete mode 100644 packages/contracts/src/2.0.0/test/TestLibBytes/TestLibBytes.sol delete mode 100644 packages/contracts/src/2.0.0/test/TestLibs/TestLibs.sol delete mode 100644 packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol delete mode 100644 packages/contracts/src/2.0.0/test/TestStaticCallReceiver/TestStaticCallReceiver.sol delete mode 100644 packages/contracts/src/2.0.0/tokens/ERC20Token/ERC20Token.sol delete mode 100644 packages/contracts/src/2.0.0/tokens/ERC20Token/IERC20Token.sol delete mode 100644 packages/contracts/src/2.0.0/tokens/ERC20Token/MintableERC20Token.sol delete mode 100644 packages/contracts/src/2.0.0/tokens/ERC20Token/UnlimitedAllowanceERC20Token.sol delete mode 100644 packages/contracts/src/2.0.0/tokens/ERC721Token/ERC721Token.sol delete mode 100644 packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Receiver.sol delete mode 100644 packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Token.sol delete mode 100644 packages/contracts/src/2.0.0/tokens/ERC721Token/MintableERC721Token.sol delete mode 100644 packages/contracts/src/2.0.0/tokens/EtherToken/IEtherToken.sol delete mode 100644 packages/contracts/src/2.0.0/tokens/EtherToken/WETH9.sol delete mode 100644 packages/contracts/src/2.0.0/tokens/ZRXToken/ZRXToken.sol delete mode 100644 packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol delete mode 100644 packages/contracts/src/2.0.0/utils/Ownable/IOwnable.sol delete mode 100644 packages/contracts/src/2.0.0/utils/Ownable/Ownable.sol delete mode 100644 packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol delete mode 100644 packages/contracts/src/2.0.0/utils/SafeMath/SafeMath.sol create mode 100644 packages/contracts/src/artifacts/index.ts create mode 100644 packages/contracts/src/index.ts create mode 100644 packages/contracts/src/wrappers/index.ts (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/1.0.0/Arbitrage/Arbitrage.sol b/packages/contracts/src/1.0.0/Arbitrage/Arbitrage.sol deleted file mode 100644 index 5054afc2f..000000000 --- a/packages/contracts/src/1.0.0/Arbitrage/Arbitrage.sol +++ /dev/null @@ -1,114 +0,0 @@ -pragma solidity ^0.4.19; - -import { IExchange_v1 as Exchange } from "../Exchange/IExchange_v1.sol"; -import { EtherDelta } from "../EtherDelta/EtherDelta.sol"; -import { Ownable_v1 as Ownable } from "../Ownable/Ownable_v1.sol"; -import { IToken_v1 as Token } from "../Token/IToken_v1.sol"; - -/// @title Arbitrage - Facilitates atomic arbitrage of ERC20 tokens between EtherDelta and 0x Exchange contract. -/// @author Leonid Logvinov - -contract Arbitrage is Ownable { - - Exchange exchange; - EtherDelta etherDelta; - address proxyAddress; - - uint256 constant MAX_UINT = 2**256 - 1; - - function Arbitrage(address _exchangeAddress, address _etherDeltaAddress, address _proxyAddress) { - exchange = Exchange(_exchangeAddress); - etherDelta = EtherDelta(_etherDeltaAddress); - proxyAddress = _proxyAddress; - } - - /* - * Makes token tradeable by setting an allowance for etherDelta and 0x proxy contract. - * Also sets an allowance for the owner of the contracts therefore allowing to withdraw tokens. - */ - function setAllowances(address tokenAddress) external onlyOwner { - Token token = Token(tokenAddress); - token.approve(address(etherDelta), MAX_UINT); - token.approve(proxyAddress, MAX_UINT); - token.approve(owner, MAX_UINT); - } - - /* - * Because of the limits on the number of local variables in Solidity we need to compress parameters while loosing - * readability. Scheme of the parameter layout: - * - * addresses - * 0..4 orderAddresses - * 5 user - * - * values - * 0..5 orderValues - * 6 fillTakerTokenAmount - * 7 amountGet - * 8 amountGive - * 9 expires - * 10 nonce - * 11 amount - - * signature - * exchange then etherDelta - */ - function makeAtomicTrade( - address[6] addresses, uint[12] values, - uint8[2] v, bytes32[2] r, bytes32[2] s - ) external onlyOwner { - makeExchangeTrade(addresses, values, v, r, s); - makeEtherDeltaTrade(addresses, values, v, r, s); - } - - function makeEtherDeltaTrade( - address[6] addresses, uint[12] values, - uint8[2] v, bytes32[2] r, bytes32[2] s - ) internal { - uint amount = values[11]; - etherDelta.depositToken( - addresses[2], // tokenGet === makerToken - values[7] // amountGet - ); - etherDelta.trade( - addresses[2], // tokenGet === makerToken - values[7], // amountGet - addresses[3], // tokenGive === takerToken - values[8], // amountGive - values[9], // expires - values[10], // nonce - addresses[5], // user - v[1], - r[1], - s[1], - amount - ); - etherDelta.withdrawToken( - addresses[3], // tokenGive === tokenToken - values[8] // amountGive - ); - } - - function makeExchangeTrade( - address[6] addresses, uint[12] values, - uint8[2] v, bytes32[2] r, bytes32[2] s - ) internal { - address[5] memory orderAddresses = [ - addresses[0], // maker - addresses[1], // taker - addresses[2], // makerToken - addresses[3], // takerToken - addresses[4] // feeRecepient - ]; - uint[6] memory orderValues = [ - values[0], // makerTokenAmount - values[1], // takerTokenAmount - values[2], // makerFee - values[3], // takerFee - values[4], // expirationTimestampInSec - values[5] // salt - ]; - uint fillTakerTokenAmount = values[6]; // fillTakerTokenAmount - // Execute Exchange trade. It either succeeds in full or fails and reverts all the changes. - exchange.fillOrKillOrder(orderAddresses, orderValues, fillTakerTokenAmount, v[0], r[0], s[0]); - } -} diff --git a/packages/contracts/src/1.0.0/ERC20Token/ERC20Token_v1.sol b/packages/contracts/src/1.0.0/ERC20Token/ERC20Token_v1.sol deleted file mode 100644 index e05ee2d5e..000000000 --- a/packages/contracts/src/1.0.0/ERC20Token/ERC20Token_v1.sol +++ /dev/null @@ -1,44 +0,0 @@ -pragma solidity ^0.4.11; - -import { Token_v1 as Token } from "../Token/Token_v1.sol"; - -contract ERC20Token_v1 is Token { - - function transfer(address _to, uint _value) returns (bool) { - //Default assumes totalSupply can't be over max (2^256 - 1). - if (balances[msg.sender] >= _value && balances[_to] + _value >= balances[_to]) { - balances[msg.sender] -= _value; - balances[_to] += _value; - Transfer(msg.sender, _to, _value); - return true; - } else { return false; } - } - - function transferFrom(address _from, address _to, uint _value) returns (bool) { - if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value >= balances[_to]) { - balances[_to] += _value; - balances[_from] -= _value; - allowed[_from][msg.sender] -= _value; - Transfer(_from, _to, _value); - return true; - } else { return false; } - } - - function balanceOf(address _owner) constant returns (uint) { - return balances[_owner]; - } - - function approve(address _spender, uint _value) returns (bool) { - allowed[msg.sender][_spender] = _value; - Approval(msg.sender, _spender, _value); - return true; - } - - function allowance(address _owner, address _spender) constant returns (uint) { - return allowed[_owner][_spender]; - } - - mapping (address => uint) balances; - mapping (address => mapping (address => uint)) allowed; - uint public totalSupply; -} diff --git a/packages/contracts/src/1.0.0/EtherDelta/AccountLevels.sol b/packages/contracts/src/1.0.0/EtherDelta/AccountLevels.sol deleted file mode 100644 index 8d7a930d3..000000000 --- a/packages/contracts/src/1.0.0/EtherDelta/AccountLevels.sol +++ /dev/null @@ -1,11 +0,0 @@ -pragma solidity ^0.4.19; - -contract AccountLevels { - //given a user, returns an account level - //0 = regular user (pays take fee and make fee) - //1 = market maker silver (pays take fee, no make fee, gets rebate) - //2 = market maker gold (pays take fee, no make fee, gets entire counterparty's take fee as rebate) - function accountLevel(address user) constant returns(uint) { - return 0; - } -} diff --git a/packages/contracts/src/1.0.0/EtherDelta/EtherDelta.sol b/packages/contracts/src/1.0.0/EtherDelta/EtherDelta.sol deleted file mode 100644 index fe599ca0a..000000000 --- a/packages/contracts/src/1.0.0/EtherDelta/EtherDelta.sol +++ /dev/null @@ -1,168 +0,0 @@ -pragma solidity ^0.4.19; - -import { SafeMath } from "../SafeMath/SafeMath_v1.sol"; -import { AccountLevels } from "./AccountLevels.sol"; -import { Token } from "../Token/Token_v1.sol"; - -contract EtherDelta is SafeMath { - address public admin; //the admin address - address public feeAccount; //the account that will receive fees - address public accountLevelsAddr; //the address of the AccountLevels contract - uint public feeMake; //percentage times (1 ether) - uint public feeTake; //percentage times (1 ether) - uint public feeRebate; //percentage times (1 ether) - mapping (address => mapping (address => uint)) public tokens; //mapping of token addresses to mapping of account balances (token=0 means Ether) - mapping (address => mapping (bytes32 => bool)) public orders; //mapping of user accounts to mapping of order hashes to booleans (true = submitted by user, equivalent to offchain signature) - mapping (address => mapping (bytes32 => uint)) public orderFills; //mapping of user accounts to mapping of order hashes to uints (amount of order that has been filled) - - event Order(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, address user); - event Cancel(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, address user, uint8 v, bytes32 r, bytes32 s); - event Trade(address tokenGet, uint amountGet, address tokenGive, uint amountGive, address get, address give); - event Deposit(address token, address user, uint amount, uint balance); - event Withdraw(address token, address user, uint amount, uint balance); - - function EtherDelta(address admin_, address feeAccount_, address accountLevelsAddr_, uint feeMake_, uint feeTake_, uint feeRebate_) { - admin = admin_; - feeAccount = feeAccount_; - accountLevelsAddr = accountLevelsAddr_; - feeMake = feeMake_; - feeTake = feeTake_; - feeRebate = feeRebate_; - } - - function() { - throw; - } - - function changeAdmin(address admin_) { - if (msg.sender != admin) throw; - admin = admin_; - } - - function changeAccountLevelsAddr(address accountLevelsAddr_) { - if (msg.sender != admin) throw; - accountLevelsAddr = accountLevelsAddr_; - } - - function changeFeeAccount(address feeAccount_) { - if (msg.sender != admin) throw; - feeAccount = feeAccount_; - } - - function changeFeeMake(uint feeMake_) { - if (msg.sender != admin) throw; - if (feeMake_ > feeMake) throw; - feeMake = feeMake_; - } - - function changeFeeTake(uint feeTake_) { - if (msg.sender != admin) throw; - if (feeTake_ > feeTake || feeTake_ < feeRebate) throw; - feeTake = feeTake_; - } - - function changeFeeRebate(uint feeRebate_) { - if (msg.sender != admin) throw; - if (feeRebate_ < feeRebate || feeRebate_ > feeTake) throw; - feeRebate = feeRebate_; - } - - function deposit() payable { - tokens[0][msg.sender] = safeAdd(tokens[0][msg.sender], msg.value); - Deposit(0, msg.sender, msg.value, tokens[0][msg.sender]); - } - - function withdraw(uint amount) { - if (tokens[0][msg.sender] < amount) throw; - tokens[0][msg.sender] = safeSub(tokens[0][msg.sender], amount); - if (!msg.sender.call.value(amount)()) throw; - Withdraw(0, msg.sender, amount, tokens[0][msg.sender]); - } - - function depositToken(address token, uint amount) { - //remember to call Token(address).approve(this, amount) or this contract will not be able to do the transfer on your behalf. - if (token==0) throw; - if (!Token(token).transferFrom(msg.sender, this, amount)) throw; - tokens[token][msg.sender] = safeAdd(tokens[token][msg.sender], amount); - Deposit(token, msg.sender, amount, tokens[token][msg.sender]); - } - - function withdrawToken(address token, uint amount) { - if (token==0) throw; - if (tokens[token][msg.sender] < amount) throw; - tokens[token][msg.sender] = safeSub(tokens[token][msg.sender], amount); - if (!Token(token).transfer(msg.sender, amount)) throw; - Withdraw(token, msg.sender, amount, tokens[token][msg.sender]); - } - - function balanceOf(address token, address user) constant returns (uint) { - return tokens[token][user]; - } - - function order(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce) { - bytes32 hash = sha256(this, tokenGet, amountGet, tokenGive, amountGive, expires, nonce); - orders[msg.sender][hash] = true; - Order(tokenGet, amountGet, tokenGive, amountGive, expires, nonce, msg.sender); - } - - function trade(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, address user, uint8 v, bytes32 r, bytes32 s, uint amount) { - //amount is in amountGet terms - bytes32 hash = sha256(this, tokenGet, amountGet, tokenGive, amountGive, expires, nonce); - if (!( - (orders[user][hash] || ecrecover(sha3("\x19Ethereum Signed Message:\n32", hash),v,r,s) == user) && - block.number <= expires && - safeAdd(orderFills[user][hash], amount) <= amountGet - )) throw; - tradeBalances(tokenGet, amountGet, tokenGive, amountGive, user, amount); - orderFills[user][hash] = safeAdd(orderFills[user][hash], amount); - Trade(tokenGet, amount, tokenGive, amountGive * amount / amountGet, user, msg.sender); - } - - function tradeBalances(address tokenGet, uint amountGet, address tokenGive, uint amountGive, address user, uint amount) private { - uint feeMakeXfer = safeMul(amount, feeMake) / (1 ether); - uint feeTakeXfer = safeMul(amount, feeTake) / (1 ether); - uint feeRebateXfer = 0; - if (accountLevelsAddr != 0x0) { - uint accountLevel = AccountLevels(accountLevelsAddr).accountLevel(user); - if (accountLevel==1) feeRebateXfer = safeMul(amount, feeRebate) / (1 ether); - if (accountLevel==2) feeRebateXfer = feeTakeXfer; - } - tokens[tokenGet][msg.sender] = safeSub(tokens[tokenGet][msg.sender], safeAdd(amount, feeTakeXfer)); - tokens[tokenGet][user] = safeAdd(tokens[tokenGet][user], safeSub(safeAdd(amount, feeRebateXfer), feeMakeXfer)); - tokens[tokenGet][feeAccount] = safeAdd(tokens[tokenGet][feeAccount], safeSub(safeAdd(feeMakeXfer, feeTakeXfer), feeRebateXfer)); - tokens[tokenGive][user] = safeSub(tokens[tokenGive][user], safeMul(amountGive, amount) / amountGet); - tokens[tokenGive][msg.sender] = safeAdd(tokens[tokenGive][msg.sender], safeMul(amountGive, amount) / amountGet); - } - - function testTrade(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, address user, uint8 v, bytes32 r, bytes32 s, uint amount, address sender) constant returns(bool) { - if (!( - tokens[tokenGet][sender] >= amount && - availableVolume(tokenGet, amountGet, tokenGive, amountGive, expires, nonce, user, v, r, s) >= amount - )) return false; - return true; - } - - function availableVolume(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, address user, uint8 v, bytes32 r, bytes32 s) constant returns(uint) { - bytes32 hash = sha256(this, tokenGet, amountGet, tokenGive, amountGive, expires, nonce); - if (!( - (orders[user][hash] || ecrecover(sha3("\x19Ethereum Signed Message:\n32", hash),v,r,s) == user) && - block.number <= expires - )) return 0; - uint available1 = safeSub(amountGet, orderFills[user][hash]); - uint available2 = safeMul(tokens[tokenGive][user], amountGet) / amountGive; - if (available1, Will Warren - -contract Exchange_v1 is SafeMath { - - // Error Codes - enum Errors { - ORDER_EXPIRED, // Order has already expired - ORDER_FULLY_FILLED_OR_CANCELLED, // Order has already been fully filled or cancelled - ROUNDING_ERROR_TOO_LARGE, // Rounding error too large - INSUFFICIENT_BALANCE_OR_ALLOWANCE // Insufficient balance or allowance for token transfer - } - - string constant public VERSION = "1.0.0"; - uint16 constant public EXTERNAL_QUERY_GAS_LIMIT = 4999; // Changes to state require at least 5000 gas - - address public ZRX_TOKEN_CONTRACT; - address public TOKEN_TRANSFER_PROXY_CONTRACT; - - // Mappings of orderHash => amounts of takerTokenAmount filled or cancelled. - mapping (bytes32 => uint) public filled; - mapping (bytes32 => uint) public cancelled; - - event LogFill( - address indexed maker, - address taker, - address indexed feeRecipient, - address makerToken, - address takerToken, - uint filledMakerTokenAmount, - uint filledTakerTokenAmount, - uint paidMakerFee, - uint paidTakerFee, - bytes32 indexed tokens, // keccak256(makerToken, takerToken), allows subscribing to a token pair - bytes32 orderHash - ); - - event LogCancel( - address indexed maker, - address indexed feeRecipient, - address makerToken, - address takerToken, - uint cancelledMakerTokenAmount, - uint cancelledTakerTokenAmount, - bytes32 indexed tokens, - bytes32 orderHash - ); - - event LogError(uint8 indexed errorId, bytes32 indexed orderHash); - - struct Order { - address maker; - address taker; - address makerToken; - address takerToken; - address feeRecipient; - uint makerTokenAmount; - uint takerTokenAmount; - uint makerFee; - uint takerFee; - uint expirationTimestampInSec; - bytes32 orderHash; - } - - function Exchange_v1(address _zrxToken, address _tokenTransferProxy) { - ZRX_TOKEN_CONTRACT = _zrxToken; - TOKEN_TRANSFER_PROXY_CONTRACT = _tokenTransferProxy; - } - - /* - * Core exchange functions - */ - - /// @dev Fills the input order. - /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient. - /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt. - /// @param fillTakerTokenAmount Desired amount of takerToken to fill. - /// @param shouldThrowOnInsufficientBalanceOrAllowance Test if transfer will fail before attempting. - /// @param v ECDSA signature parameter v. - /// @param r ECDSA signature parameters r. - /// @param s ECDSA signature parameters s. - /// @return Total amount of takerToken filled in trade. - function fillOrder( - address[5] orderAddresses, - uint[6] orderValues, - uint fillTakerTokenAmount, - bool shouldThrowOnInsufficientBalanceOrAllowance, - uint8 v, - bytes32 r, - bytes32 s) - public - returns (uint filledTakerTokenAmount) - { - Order memory order = Order({ - maker: orderAddresses[0], - taker: orderAddresses[1], - makerToken: orderAddresses[2], - takerToken: orderAddresses[3], - feeRecipient: orderAddresses[4], - makerTokenAmount: orderValues[0], - takerTokenAmount: orderValues[1], - makerFee: orderValues[2], - takerFee: orderValues[3], - expirationTimestampInSec: orderValues[4], - orderHash: getOrderHash(orderAddresses, orderValues) - }); - - require(order.taker == address(0) || order.taker == msg.sender); - require(order.makerTokenAmount > 0 && order.takerTokenAmount > 0 && fillTakerTokenAmount > 0); - require(isValidSignature( - order.maker, - order.orderHash, - v, - r, - s - )); - - if (block.timestamp >= order.expirationTimestampInSec) { - LogError(uint8(Errors.ORDER_EXPIRED), order.orderHash); - return 0; - } - - uint remainingTakerTokenAmount = safeSub(order.takerTokenAmount, getUnavailableTakerTokenAmount(order.orderHash)); - filledTakerTokenAmount = min256(fillTakerTokenAmount, remainingTakerTokenAmount); - if (filledTakerTokenAmount == 0) { - LogError(uint8(Errors.ORDER_FULLY_FILLED_OR_CANCELLED), order.orderHash); - return 0; - } - - if (isRoundingError(filledTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount)) { - LogError(uint8(Errors.ROUNDING_ERROR_TOO_LARGE), order.orderHash); - return 0; - } - - if (!shouldThrowOnInsufficientBalanceOrAllowance && !isTransferable(order, filledTakerTokenAmount)) { - LogError(uint8(Errors.INSUFFICIENT_BALANCE_OR_ALLOWANCE), order.orderHash); - return 0; - } - - uint filledMakerTokenAmount = getPartialAmount(filledTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount); - uint paidMakerFee; - uint paidTakerFee; - filled[order.orderHash] = safeAdd(filled[order.orderHash], filledTakerTokenAmount); - require(transferViaTokenTransferProxy( - order.makerToken, - order.maker, - msg.sender, - filledMakerTokenAmount - )); - require(transferViaTokenTransferProxy( - order.takerToken, - msg.sender, - order.maker, - filledTakerTokenAmount - )); - if (order.feeRecipient != address(0)) { - if (order.makerFee > 0) { - paidMakerFee = getPartialAmount(filledTakerTokenAmount, order.takerTokenAmount, order.makerFee); - require(transferViaTokenTransferProxy( - ZRX_TOKEN_CONTRACT, - order.maker, - order.feeRecipient, - paidMakerFee - )); - } - if (order.takerFee > 0) { - paidTakerFee = getPartialAmount(filledTakerTokenAmount, order.takerTokenAmount, order.takerFee); - require(transferViaTokenTransferProxy( - ZRX_TOKEN_CONTRACT, - msg.sender, - order.feeRecipient, - paidTakerFee - )); - } - } - - LogFill( - order.maker, - msg.sender, - order.feeRecipient, - order.makerToken, - order.takerToken, - filledMakerTokenAmount, - filledTakerTokenAmount, - paidMakerFee, - paidTakerFee, - keccak256(order.makerToken, order.takerToken), - order.orderHash - ); - return filledTakerTokenAmount; - } - - /// @dev Cancels the input order. - /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient. - /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt. - /// @param cancelTakerTokenAmount Desired amount of takerToken to cancel in order. - /// @return Amount of takerToken cancelled. - function cancelOrder( - address[5] orderAddresses, - uint[6] orderValues, - uint cancelTakerTokenAmount) - public - returns (uint) - { - Order memory order = Order({ - maker: orderAddresses[0], - taker: orderAddresses[1], - makerToken: orderAddresses[2], - takerToken: orderAddresses[3], - feeRecipient: orderAddresses[4], - makerTokenAmount: orderValues[0], - takerTokenAmount: orderValues[1], - makerFee: orderValues[2], - takerFee: orderValues[3], - expirationTimestampInSec: orderValues[4], - orderHash: getOrderHash(orderAddresses, orderValues) - }); - - require(order.maker == msg.sender); - require(order.makerTokenAmount > 0 && order.takerTokenAmount > 0 && cancelTakerTokenAmount > 0); - - if (block.timestamp >= order.expirationTimestampInSec) { - LogError(uint8(Errors.ORDER_EXPIRED), order.orderHash); - return 0; - } - - uint remainingTakerTokenAmount = safeSub(order.takerTokenAmount, getUnavailableTakerTokenAmount(order.orderHash)); - uint cancelledTakerTokenAmount = min256(cancelTakerTokenAmount, remainingTakerTokenAmount); - if (cancelledTakerTokenAmount == 0) { - LogError(uint8(Errors.ORDER_FULLY_FILLED_OR_CANCELLED), order.orderHash); - return 0; - } - - cancelled[order.orderHash] = safeAdd(cancelled[order.orderHash], cancelledTakerTokenAmount); - - LogCancel( - order.maker, - order.feeRecipient, - order.makerToken, - order.takerToken, - getPartialAmount(cancelledTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount), - cancelledTakerTokenAmount, - keccak256(order.makerToken, order.takerToken), - order.orderHash - ); - return cancelledTakerTokenAmount; - } - - /* - * Wrapper functions - */ - - /// @dev Fills an order with specified parameters and ECDSA signature, throws if specified amount not filled entirely. - /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient. - /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt. - /// @param fillTakerTokenAmount Desired amount of takerToken to fill. - /// @param v ECDSA signature parameter v. - /// @param r ECDSA signature parameters r. - /// @param s ECDSA signature parameters s. - function fillOrKillOrder( - address[5] orderAddresses, - uint[6] orderValues, - uint fillTakerTokenAmount, - uint8 v, - bytes32 r, - bytes32 s) - public - { - require(fillOrder( - orderAddresses, - orderValues, - fillTakerTokenAmount, - false, - v, - r, - s - ) == fillTakerTokenAmount); - } - - /// @dev Synchronously executes multiple fill orders in a single transaction. - /// @param orderAddresses Array of address arrays containing individual order addresses. - /// @param orderValues Array of uint arrays containing individual order values. - /// @param fillTakerTokenAmounts Array of desired amounts of takerToken to fill in orders. - /// @param shouldThrowOnInsufficientBalanceOrAllowance Test if transfers will fail before attempting. - /// @param v Array ECDSA signature v parameters. - /// @param r Array of ECDSA signature r parameters. - /// @param s Array of ECDSA signature s parameters. - function batchFillOrders( - address[5][] orderAddresses, - uint[6][] orderValues, - uint[] fillTakerTokenAmounts, - bool shouldThrowOnInsufficientBalanceOrAllowance, - uint8[] v, - bytes32[] r, - bytes32[] s) - public - { - for (uint i = 0; i < orderAddresses.length; i++) { - fillOrder( - orderAddresses[i], - orderValues[i], - fillTakerTokenAmounts[i], - shouldThrowOnInsufficientBalanceOrAllowance, - v[i], - r[i], - s[i] - ); - } - } - - /// @dev Synchronously executes multiple fillOrKill orders in a single transaction. - /// @param orderAddresses Array of address arrays containing individual order addresses. - /// @param orderValues Array of uint arrays containing individual order values. - /// @param fillTakerTokenAmounts Array of desired amounts of takerToken to fill in orders. - /// @param v Array ECDSA signature v parameters. - /// @param r Array of ECDSA signature r parameters. - /// @param s Array of ECDSA signature s parameters. - function batchFillOrKillOrders( - address[5][] orderAddresses, - uint[6][] orderValues, - uint[] fillTakerTokenAmounts, - uint8[] v, - bytes32[] r, - bytes32[] s) - public - { - for (uint i = 0; i < orderAddresses.length; i++) { - fillOrKillOrder( - orderAddresses[i], - orderValues[i], - fillTakerTokenAmounts[i], - v[i], - r[i], - s[i] - ); - } - } - - /// @dev Synchronously executes multiple fill orders in a single transaction until total fillTakerTokenAmount filled. - /// @param orderAddresses Array of address arrays containing individual order addresses. - /// @param orderValues Array of uint arrays containing individual order values. - /// @param fillTakerTokenAmount Desired total amount of takerToken to fill in orders. - /// @param shouldThrowOnInsufficientBalanceOrAllowance Test if transfers will fail before attempting. - /// @param v Array ECDSA signature v parameters. - /// @param r Array of ECDSA signature r parameters. - /// @param s Array of ECDSA signature s parameters. - /// @return Total amount of fillTakerTokenAmount filled in orders. - function fillOrdersUpTo( - address[5][] orderAddresses, - uint[6][] orderValues, - uint fillTakerTokenAmount, - bool shouldThrowOnInsufficientBalanceOrAllowance, - uint8[] v, - bytes32[] r, - bytes32[] s) - public - returns (uint) - { - uint filledTakerTokenAmount = 0; - for (uint i = 0; i < orderAddresses.length; i++) { - require(orderAddresses[i][3] == orderAddresses[0][3]); // takerToken must be the same for each order - filledTakerTokenAmount = safeAdd(filledTakerTokenAmount, fillOrder( - orderAddresses[i], - orderValues[i], - safeSub(fillTakerTokenAmount, filledTakerTokenAmount), - shouldThrowOnInsufficientBalanceOrAllowance, - v[i], - r[i], - s[i] - )); - if (filledTakerTokenAmount == fillTakerTokenAmount) break; - } - return filledTakerTokenAmount; - } - - /// @dev Synchronously cancels multiple orders in a single transaction. - /// @param orderAddresses Array of address arrays containing individual order addresses. - /// @param orderValues Array of uint arrays containing individual order values. - /// @param cancelTakerTokenAmounts Array of desired amounts of takerToken to cancel in orders. - function batchCancelOrders( - address[5][] orderAddresses, - uint[6][] orderValues, - uint[] cancelTakerTokenAmounts) - public - { - for (uint i = 0; i < orderAddresses.length; i++) { - cancelOrder( - orderAddresses[i], - orderValues[i], - cancelTakerTokenAmounts[i] - ); - } - } - - /* - * Constant public functions - */ - - /// @dev Calculates Keccak-256 hash of order with specified parameters. - /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient. - /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt. - /// @return Keccak-256 hash of order. - function getOrderHash(address[5] orderAddresses, uint[6] orderValues) - public - constant - returns (bytes32) - { - return keccak256( - address(this), - orderAddresses[0], // maker - orderAddresses[1], // taker - orderAddresses[2], // makerToken - orderAddresses[3], // takerToken - orderAddresses[4], // feeRecipient - orderValues[0], // makerTokenAmount - orderValues[1], // takerTokenAmount - orderValues[2], // makerFee - orderValues[3], // takerFee - orderValues[4], // expirationTimestampInSec - orderValues[5] // salt - ); - } - - /// @dev Verifies that an order signature is valid. - /// @param signer address of signer. - /// @param hash Signed Keccak-256 hash. - /// @param v ECDSA signature parameter v. - /// @param r ECDSA signature parameters r. - /// @param s ECDSA signature parameters s. - /// @return Validity of order signature. - function isValidSignature( - address signer, - bytes32 hash, - uint8 v, - bytes32 r, - bytes32 s) - public - constant - returns (bool) - { - return signer == ecrecover( - keccak256("\x19Ethereum Signed Message:\n32", hash), - v, - r, - s - ); - } - - /// @dev Checks if rounding error > 0.1%. - /// @param numerator Numerator. - /// @param denominator Denominator. - /// @param target Value to multiply with numerator/denominator. - /// @return Rounding error is present. - function isRoundingError(uint numerator, uint denominator, uint target) - public - constant - returns (bool) - { - uint remainder = mulmod(target, numerator, denominator); - if (remainder == 0) return false; // No rounding error. - - uint errPercentageTimes1000000 = safeDiv( - safeMul(remainder, 1000000), - safeMul(numerator, target) - ); - return errPercentageTimes1000000 > 1000; - } - - /// @dev Calculates partial value given a numerator and denominator. - /// @param numerator Numerator. - /// @param denominator Denominator. - /// @param target Value to calculate partial of. - /// @return Partial value of target. - function getPartialAmount(uint numerator, uint denominator, uint target) - public - constant - returns (uint) - { - return safeDiv(safeMul(numerator, target), denominator); - } - - /// @dev Calculates the sum of values already filled and cancelled for a given order. - /// @param orderHash The Keccak-256 hash of the given order. - /// @return Sum of values already filled and cancelled. - function getUnavailableTakerTokenAmount(bytes32 orderHash) - public - constant - returns (uint) - { - return safeAdd(filled[orderHash], cancelled[orderHash]); - } - - - /* - * Internal functions - */ - - /// @dev Transfers a token using TokenTransferProxy transferFrom function. - /// @param token Address of token to transferFrom. - /// @param from Address transfering token. - /// @param to Address receiving token. - /// @param value Amount of token to transfer. - /// @return Success of token transfer. - function transferViaTokenTransferProxy( - address token, - address from, - address to, - uint value) - internal - returns (bool) - { - return TokenTransferProxy(TOKEN_TRANSFER_PROXY_CONTRACT).transferFrom(token, from, to, value); - } - - /// @dev Checks if any order transfers will fail. - /// @param order Order struct of params that will be checked. - /// @param fillTakerTokenAmount Desired amount of takerToken to fill. - /// @return Predicted result of transfers. - function isTransferable(Order order, uint fillTakerTokenAmount) - internal - constant // The called token contracts may attempt to change state, but will not be able to due to gas limits on getBalance and getAllowance. - returns (bool) - { - address taker = msg.sender; - uint fillMakerTokenAmount = getPartialAmount(fillTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount); - - if (order.feeRecipient != address(0)) { - bool isMakerTokenZRX = order.makerToken == ZRX_TOKEN_CONTRACT; - bool isTakerTokenZRX = order.takerToken == ZRX_TOKEN_CONTRACT; - uint paidMakerFee = getPartialAmount(fillTakerTokenAmount, order.takerTokenAmount, order.makerFee); - uint paidTakerFee = getPartialAmount(fillTakerTokenAmount, order.takerTokenAmount, order.takerFee); - uint requiredMakerZRX = isMakerTokenZRX ? safeAdd(fillMakerTokenAmount, paidMakerFee) : paidMakerFee; - uint requiredTakerZRX = isTakerTokenZRX ? safeAdd(fillTakerTokenAmount, paidTakerFee) : paidTakerFee; - - if ( getBalance(ZRX_TOKEN_CONTRACT, order.maker) < requiredMakerZRX - || getAllowance(ZRX_TOKEN_CONTRACT, order.maker) < requiredMakerZRX - || getBalance(ZRX_TOKEN_CONTRACT, taker) < requiredTakerZRX - || getAllowance(ZRX_TOKEN_CONTRACT, taker) < requiredTakerZRX - ) return false; - - if (!isMakerTokenZRX && ( getBalance(order.makerToken, order.maker) < fillMakerTokenAmount // Don't double check makerToken if ZRX - || getAllowance(order.makerToken, order.maker) < fillMakerTokenAmount) - ) return false; - if (!isTakerTokenZRX && ( getBalance(order.takerToken, taker) < fillTakerTokenAmount // Don't double check takerToken if ZRX - || getAllowance(order.takerToken, taker) < fillTakerTokenAmount) - ) return false; - } else if ( getBalance(order.makerToken, order.maker) < fillMakerTokenAmount - || getAllowance(order.makerToken, order.maker) < fillMakerTokenAmount - || getBalance(order.takerToken, taker) < fillTakerTokenAmount - || getAllowance(order.takerToken, taker) < fillTakerTokenAmount - ) return false; - - return true; - } - - /// @dev Get token balance of an address. - /// @param token Address of token. - /// @param owner Address of owner. - /// @return Token balance of owner. - function getBalance(address token, address owner) - internal - constant // The called token contract may attempt to change state, but will not be able to due to an added gas limit. - returns (uint) - { - return Token(token).balanceOf.gas(EXTERNAL_QUERY_GAS_LIMIT)(owner); // Limit gas to prevent reentrancy - } - - /// @dev Get allowance of token given to TokenTransferProxy by an address. - /// @param token Address of token. - /// @param owner Address of owner. - /// @return Allowance of token given to TokenTransferProxy by owner. - function getAllowance(address token, address owner) - internal - constant // The called token contract may attempt to change state, but will not be able to due to an added gas limit. - returns (uint) - { - return Token(token).allowance.gas(EXTERNAL_QUERY_GAS_LIMIT)(owner, TOKEN_TRANSFER_PROXY_CONTRACT); // Limit gas to prevent reentrancy - } -} diff --git a/packages/contracts/src/1.0.0/Exchange/IExchange_v1.sol b/packages/contracts/src/1.0.0/Exchange/IExchange_v1.sol deleted file mode 100644 index ec4bce7b0..000000000 --- a/packages/contracts/src/1.0.0/Exchange/IExchange_v1.sol +++ /dev/null @@ -1,226 +0,0 @@ -pragma solidity ^0.4.19; - -contract IExchange_v1 { - - // Error Codes - enum Errors { - ORDER_EXPIRED, // Order has already expired - ORDER_FULLY_FILLED_OR_CANCELLED, // Order has already been fully filled or cancelled - ROUNDING_ERROR_TOO_LARGE, // Rounding error too large - INSUFFICIENT_BALANCE_OR_ALLOWANCE // Insufficient balance or allowance for token transfer - } - - event LogError(uint8 indexed errorId, bytes32 indexed orderHash); - - event LogFill( - address indexed maker, - address taker, - address indexed feeRecipient, - address makerToken, - address takerToken, - uint filledMakerTokenAmount, - uint filledTakerTokenAmount, - uint paidMakerFee, - uint paidTakerFee, - bytes32 indexed tokens, // keccak256(makerToken, takerToken), allows subscribing to a token pair - bytes32 orderHash - ); - - event LogCancel( - address indexed maker, - address indexed feeRecipient, - address makerToken, - address takerToken, - uint cancelledMakerTokenAmount, - uint cancelledTakerTokenAmount, - bytes32 indexed tokens, - bytes32 orderHash - ); - - function ZRX_TOKEN_CONTRACT() - public view - returns (address); - - function TOKEN_TRANSFER_PROXY_CONTRACT() - public view - returns (address); - - function EXTERNAL_QUERY_GAS_LIMIT() - public view - returns (uint16); - - function VERSION() - public view - returns (string); - - function filled(bytes32) - public view - returns (uint256); - - function cancelled(bytes32) - public view - returns (uint256); - - /// @dev Calculates the sum of values already filled and cancelled for a given order. - /// @param orderHash The Keccak-256 hash of the given order. - /// @return Sum of values already filled and cancelled. - function getUnavailableTakerTokenAmount(bytes32 orderHash) - public constant - returns (uint); - - /// @dev Calculates partial value given a numerator and denominator. - /// @param numerator Numerator. - /// @param denominator Denominator. - /// @param target Value to calculate partial of. - /// @return Partial value of target. - function getPartialAmount(uint numerator, uint denominator, uint target) - public constant - returns (uint); - - /// @dev Checks if rounding error > 0.1%. - /// @param numerator Numerator. - /// @param denominator Denominator. - /// @param target Value to multiply with numerator/denominator. - /// @return Rounding error is present. - function isRoundingError(uint numerator, uint denominator, uint target) - public constant - returns (bool); - - /// @dev Calculates Keccak-256 hash of order with specified parameters. - /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient. - /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt. - /// @return Keccak-256 hash of order. - function getOrderHash(address[5] orderAddresses, uint[6] orderValues) - public - constant - returns (bytes32); - - /// @dev Verifies that an order signature is valid. - /// @param signer address of signer. - /// @param hash Signed Keccak-256 hash. - /// @param v ECDSA signature parameter v. - /// @param r ECDSA signature parameters r. - /// @param s ECDSA signature parameters s. - /// @return Validity of order signature. - function isValidSignature( - address signer, - bytes32 hash, - uint8 v, - bytes32 r, - bytes32 s) - public constant - returns (bool); - - /// @dev Fills the input order. - /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient. - /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt. - /// @param fillTakerTokenAmount Desired amount of takerToken to fill. - /// @param shouldThrowOnInsufficientBalanceOrAllowance Test if transfer will fail before attempting. - /// @param v ECDSA signature parameter v. - /// @param r ECDSA signature parameters r. - /// @param s ECDSA signature parameters s. - /// @return Total amount of takerToken filled in trade. - function fillOrder( - address[5] orderAddresses, - uint[6] orderValues, - uint fillTakerTokenAmount, - bool shouldThrowOnInsufficientBalanceOrAllowance, - uint8 v, - bytes32 r, - bytes32 s) - public - returns (uint filledTakerTokenAmount); - - /// @dev Cancels the input order. - /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient. - /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt. - /// @param cancelTakerTokenAmount Desired amount of takerToken to cancel in order. - /// @return Amount of takerToken cancelled. - function cancelOrder( - address[5] orderAddresses, - uint[6] orderValues, - uint cancelTakerTokenAmount) - public - returns (uint); - - - /// @dev Fills an order with specified parameters and ECDSA signature, throws if specified amount not filled entirely. - /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient. - /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt. - /// @param fillTakerTokenAmount Desired amount of takerToken to fill. - /// @param v ECDSA signature parameter v. - /// @param r ECDSA signature parameters r. - /// @param s ECDSA signature parameters s. - function fillOrKillOrder( - address[5] orderAddresses, - uint[6] orderValues, - uint fillTakerTokenAmount, - uint8 v, - bytes32 r, - bytes32 s) - public; - - /// @dev Synchronously executes multiple fill orders in a single transaction. - /// @param orderAddresses Array of address arrays containing individual order addresses. - /// @param orderValues Array of uint arrays containing individual order values. - /// @param fillTakerTokenAmounts Array of desired amounts of takerToken to fill in orders. - /// @param shouldThrowOnInsufficientBalanceOrAllowance Test if transfers will fail before attempting. - /// @param v Array ECDSA signature v parameters. - /// @param r Array of ECDSA signature r parameters. - /// @param s Array of ECDSA signature s parameters. - function batchFillOrders( - address[5][] orderAddresses, - uint[6][] orderValues, - uint[] fillTakerTokenAmounts, - bool shouldThrowOnInsufficientBalanceOrAllowance, - uint8[] v, - bytes32[] r, - bytes32[] s) - public; - - /// @dev Synchronously executes multiple fillOrKill orders in a single transaction. - /// @param orderAddresses Array of address arrays containing individual order addresses. - /// @param orderValues Array of uint arrays containing individual order values. - /// @param fillTakerTokenAmounts Array of desired amounts of takerToken to fill in orders. - /// @param v Array ECDSA signature v parameters. - /// @param r Array of ECDSA signature r parameters. - /// @param s Array of ECDSA signature s parameters. - function batchFillOrKillOrders( - address[5][] orderAddresses, - uint[6][] orderValues, - uint[] fillTakerTokenAmounts, - uint8[] v, - bytes32[] r, - bytes32[] s) - public; - - /// @dev Synchronously executes multiple fill orders in a single transaction until total fillTakerTokenAmount filled. - /// @param orderAddresses Array of address arrays containing individual order addresses. - /// @param orderValues Array of uint arrays containing individual order values. - /// @param fillTakerTokenAmount Desired total amount of takerToken to fill in orders. - /// @param shouldThrowOnInsufficientBalanceOrAllowance Test if transfers will fail before attempting. - /// @param v Array ECDSA signature v parameters. - /// @param r Array of ECDSA signature r parameters. - /// @param s Array of ECDSA signature s parameters. - /// @return Total amount of fillTakerTokenAmount filled in orders. - function fillOrdersUpTo( - address[5][] orderAddresses, - uint[6][] orderValues, - uint fillTakerTokenAmount, - bool shouldThrowOnInsufficientBalanceOrAllowance, - uint8[] v, - bytes32[] r, - bytes32[] s) - public - returns (uint); - - /// @dev Synchronously cancels multiple orders in a single transaction. - /// @param orderAddresses Array of address arrays containing individual order addresses. - /// @param orderValues Array of uint arrays containing individual order values. - /// @param cancelTakerTokenAmounts Array of desired amounts of takerToken to cancel in orders. - function batchCancelOrders( - address[5][] orderAddresses, - uint[6][] orderValues, - uint[] cancelTakerTokenAmounts) - public; -} diff --git a/packages/contracts/src/1.0.0/MultiSigWalletWithTImeLockExceptRemoveAuthorizedAddress/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol b/packages/contracts/src/1.0.0/MultiSigWalletWithTImeLockExceptRemoveAuthorizedAddress/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol deleted file mode 100644 index aee722c53..000000000 --- a/packages/contracts/src/1.0.0/MultiSigWalletWithTImeLockExceptRemoveAuthorizedAddress/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol +++ /dev/null @@ -1,82 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity ^0.4.10; - -import "../../2.0.0/multisig/MultiSigWalletWithTimeLock.sol"; - -contract MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress is MultiSigWalletWithTimeLock { - - address public TOKEN_TRANSFER_PROXY_CONTRACT; - - modifier validRemoveAuthorizedAddressTx(uint transactionId) { - Transaction storage tx = transactions[transactionId]; - require(tx.destination == TOKEN_TRANSFER_PROXY_CONTRACT); - require(isFunctionRemoveAuthorizedAddress(tx.data)); - _; - } - - /// @dev Contract constructor sets initial owners, required number of confirmations, time lock, and tokenTransferProxy address. - /// @param _owners List of initial owners. - /// @param _required Number of required confirmations. - /// @param _secondsTimeLocked Duration needed after a transaction is confirmed and before it becomes executable, in seconds. - /// @param _tokenTransferProxy Address of TokenTransferProxy contract. - function MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress( - address[] _owners, - uint _required, - uint _secondsTimeLocked, - address _tokenTransferProxy) - public - MultiSigWalletWithTimeLock(_owners, _required, _secondsTimeLocked) - { - TOKEN_TRANSFER_PROXY_CONTRACT = _tokenTransferProxy; - } - - /// @dev Allows execution of removeAuthorizedAddress without time lock. - /// @param transactionId Transaction ID. - function executeRemoveAuthorizedAddress(uint transactionId) - public - notExecuted(transactionId) - fullyConfirmed(transactionId) - validRemoveAuthorizedAddressTx(transactionId) - { - Transaction storage tx = transactions[transactionId]; - tx.executed = true; - if (tx.destination.call.value(tx.value)(tx.data)) - Execution(transactionId); - else { - ExecutionFailure(transactionId); - tx.executed = false; - } - } - - /// @dev Compares first 4 bytes of byte array to removeAuthorizedAddress function signature. - /// @param data Transaction data. - /// @return Successful if data is a call to removeAuthorizedAddress. - function isFunctionRemoveAuthorizedAddress(bytes data) - public - constant - returns (bool) - { - bytes4 removeAuthorizedAddressSignature = bytes4(sha3("removeAuthorizedAddress(address)")); - for (uint i = 0; i < 4; i++) { - require(data[i] == removeAuthorizedAddressSignature[i]); - } - return true; - } -} diff --git a/packages/contracts/src/1.0.0/Ownable/IOwnable_v1.sol b/packages/contracts/src/1.0.0/Ownable/IOwnable_v1.sol deleted file mode 100644 index 7e22d544d..000000000 --- a/packages/contracts/src/1.0.0/Ownable/IOwnable_v1.sol +++ /dev/null @@ -1,18 +0,0 @@ -pragma solidity ^0.4.19; - -/* - * Ownable - * - * Base contract with an owner. - * Provides onlyOwner modifier, which prevents function from running if it is called by anyone other than the owner. - */ - -contract IOwnable_v1 { - - function owner() - public view - returns (address); - - function transferOwnership(address newOwner) - public; -} diff --git a/packages/contracts/src/1.0.0/Ownable/Ownable_v1.sol b/packages/contracts/src/1.0.0/Ownable/Ownable_v1.sol deleted file mode 100644 index c87438fa4..000000000 --- a/packages/contracts/src/1.0.0/Ownable/Ownable_v1.sol +++ /dev/null @@ -1,27 +0,0 @@ -pragma solidity ^0.4.11; - -/* - * Ownable - * - * Base contract with an owner. - * Provides onlyOwner modifier, which prevents function from running if it is called by anyone other than the owner. - */ - -contract Ownable_v1 { - address public owner; - - function Ownable_v1() { - owner = msg.sender; - } - - modifier onlyOwner() { - require(msg.sender == owner); - _; - } - - function transferOwnership(address newOwner) onlyOwner { - if (newOwner != address(0)) { - owner = newOwner; - } - } -} diff --git a/packages/contracts/src/1.0.0/SafeMath/SafeMath_v1.sol b/packages/contracts/src/1.0.0/SafeMath/SafeMath_v1.sol deleted file mode 100644 index 341d611ec..000000000 --- a/packages/contracts/src/1.0.0/SafeMath/SafeMath_v1.sol +++ /dev/null @@ -1,73 +0,0 @@ -pragma solidity ^0.4.11; - -contract SafeMath_v1 { - function safeMul(uint a, uint b) - internal - constant - returns (uint256) - { - uint c = a * b; - assert(a == 0 || c / a == b); - return c; - } - - function safeDiv(uint a, uint b) - internal - constant - returns (uint256) - { - uint c = a / b; - return c; - } - - function safeSub(uint a, uint b) - internal - constant - returns (uint256) - { - assert(b <= a); - return a - b; - } - - function safeAdd(uint a, uint b) - internal - constant - returns (uint256) - { - uint c = a + b; - assert(c >= a); - return c; - } - - function max64(uint64 a, uint64 b) - internal - constant - returns (uint64) - { - return a >= b ? a : b; - } - - function min64(uint64 a, uint64 b) - internal - constant - returns (uint64) - { - return a < b ? a : b; - } - - function max256(uint256 a, uint256 b) - internal - constant - returns (uint256) - { - return a >= b ? a : b; - } - - function min256(uint256 a, uint256 b) - internal - constant - returns (uint256) - { - return a < b ? a : b; - } -} diff --git a/packages/contracts/src/1.0.0/Token/Token_v1.sol b/packages/contracts/src/1.0.0/Token/Token_v1.sol deleted file mode 100644 index de619fb7e..000000000 --- a/packages/contracts/src/1.0.0/Token/Token_v1.sol +++ /dev/null @@ -1,39 +0,0 @@ -pragma solidity ^0.4.11; - -contract Token_v1 { - - /// @return total amount of tokens - function totalSupply() constant returns (uint supply) {} - - /// @param _owner The address from which the balance will be retrieved - /// @return The balance - function balanceOf(address _owner) constant returns (uint balance) {} - - /// @notice send `_value` token to `_to` from `msg.sender` - /// @param _to The address of the recipient - /// @param _value The amount of token to be transferred - /// @return Whether the transfer was successful or not - function transfer(address _to, uint _value) returns (bool success) {} - - /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from` - /// @param _from The address of the sender - /// @param _to The address of the recipient - /// @param _value The amount of token to be transferred - /// @return Whether the transfer was successful or not - function transferFrom(address _from, address _to, uint _value) returns (bool success) {} - - /// @notice `msg.sender` approves `_addr` to spend `_value` tokens - /// @param _spender The address of the account able to transfer the tokens - /// @param _value The amount of wei to be approved for transfer - /// @return Whether the approval was successful or not - function approve(address _spender, uint _value) returns (bool success) {} - - /// @param _owner The address of the account owning tokens - /// @param _spender The address of the account able to transfer the tokens - /// @return Amount of remaining tokens allowed to spent - function allowance(address _owner, address _spender) constant returns (uint remaining) {} - - event Transfer(address indexed _from, address indexed _to, uint _value); - event Approval(address indexed _owner, address indexed _spender, uint _value); -} - diff --git a/packages/contracts/src/1.0.0/TokenRegistry/ITokenRegistery.sol b/packages/contracts/src/1.0.0/TokenRegistry/ITokenRegistery.sol deleted file mode 100644 index b8bdaf3b9..000000000 --- a/packages/contracts/src/1.0.0/TokenRegistry/ITokenRegistery.sol +++ /dev/null @@ -1,195 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity ^0.4.21; - -import { IOwnable_v1 as IOwnable } from "../Ownable/IOwnable_v1.sol"; - -/// @title Token Registry - Stores metadata associated with ERC20 tokens. See ERC22 https://github.com/ethereum/EIPs/issues/22 -/// @author Amir Bandeali - , Will Warren - -contract ITokenRegistery is IOwnable { - - event LogAddToken( - address indexed token, - string name, - string symbol, - uint8 decimals, - bytes ipfsHash, - bytes swarmHash - ); - - event LogRemoveToken( - address indexed token, - string name, - string symbol, - uint8 decimals, - bytes ipfsHash, - bytes swarmHash - ); - - event LogTokenNameChange( - address indexed token, - string oldName, - string newName - ); - - event LogTokenSymbolChange( - address indexed token, - string oldSymbol, - string newSymbol - ); - - event LogTokenIpfsHashChange( - address indexed token, - bytes oldIpfsHash, - bytes newIpfsHash - ); - - event LogTokenSwarmHashChange( - address indexed token, - bytes oldSwarmHash, - bytes newSwarmHash - ); - - function tokens(address tokenAddress) - public view - returns ( - address token, - string name, - string symbol, - uint8 decimals, - bytes ipfsHash, - bytes swarmHash - ); - - function tokenAddresses(uint256 index) - public view - returns (address); - - - /// @dev Allows owner to add a new token to the registry. - /// @param _token Address of new token. - /// @param _name Name of new token. - /// @param _symbol Symbol for new token. - /// @param _decimals Number of decimals, divisibility of new token. - /// @param _ipfsHash IPFS hash of token icon. - /// @param _swarmHash Swarm hash of token icon. - function addToken( - address _token, - string _name, - string _symbol, - uint8 _decimals, - bytes _ipfsHash, - bytes _swarmHash) - public; - - /// @dev Allows owner to remove an existing token from the registry. - /// @param _token Address of existing token. - function removeToken(address _token, uint _index) - public; - - /// @dev Allows owner to modify an existing token's name. - /// @param _token Address of existing token. - /// @param _name New name. - function setTokenName(address _token, string _name) - public; - - /// @dev Allows owner to modify an existing token's symbol. - /// @param _token Address of existing token. - /// @param _symbol New symbol. - function setTokenSymbol(address _token, string _symbol) - public; - - /// @dev Allows owner to modify an existing token's IPFS hash. - /// @param _token Address of existing token. - /// @param _ipfsHash New IPFS hash. - function setTokenIpfsHash(address _token, bytes _ipfsHash) - public; - - /// @dev Allows owner to modify an existing token's Swarm hash. - /// @param _token Address of existing token. - /// @param _swarmHash New Swarm hash. - function setTokenSwarmHash(address _token, bytes _swarmHash) - public; - - /* - * Web3 call functions - */ - - /// @dev Provides a registered token's address when given the token symbol. - /// @param _symbol Symbol of registered token. - /// @return Token's address. - function getTokenAddressBySymbol(string _symbol) - public constant - returns (address); - - /// @dev Provides a registered token's address when given the token name. - /// @param _name Name of registered token. - /// @return Token's address. - function getTokenAddressByName(string _name) - public constant - returns (address); - - /// @dev Provides a registered token's metadata, looked up by address. - /// @param _token Address of registered token. - /// @return Token metadata. - function getTokenMetaData(address _token) - public constant - returns ( - address, //tokenAddress - string, //name - string, //symbol - uint8, //decimals - bytes, //ipfsHash - bytes //swarmHash - ); - - /// @dev Provides a registered token's metadata, looked up by name. - /// @param _name Name of registered token. - /// @return Token metadata. - function getTokenByName(string _name) - public constant - returns ( - address, //tokenAddress - string, //name - string, //symbol - uint8, //decimals - bytes, //ipfsHash - bytes //swarmHash - ); - - /// @dev Provides a registered token's metadata, looked up by symbol. - /// @param _symbol Symbol of registered token. - /// @return Token metadata. - function getTokenBySymbol(string _symbol) - public constant - returns ( - address, //tokenAddress - string, //name - string, //symbol - uint8, //decimals - bytes, //ipfsHash - bytes //swarmHash - ); - - /// @dev Returns an array containing all token addresses. - /// @return Array of token addresses. - function getTokenAddresses() - public constant - returns (address[]); -} diff --git a/packages/contracts/src/1.0.0/TokenRegistry/TokenRegistry.sol b/packages/contracts/src/1.0.0/TokenRegistry/TokenRegistry.sol deleted file mode 100644 index 7417a10a3..000000000 --- a/packages/contracts/src/1.0.0/TokenRegistry/TokenRegistry.sol +++ /dev/null @@ -1,308 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity ^0.4.11; - -import { Ownable_v1 as Ownable } from "../Ownable/Ownable_v1.sol"; - -/// @title Token Registry - Stores metadata associated with ERC20 tokens. See ERC22 https://github.com/ethereum/EIPs/issues/22 -/// @author Amir Bandeali - , Will Warren - -contract TokenRegistry is Ownable { - - event LogAddToken( - address indexed token, - string name, - string symbol, - uint8 decimals, - bytes ipfsHash, - bytes swarmHash - ); - - event LogRemoveToken( - address indexed token, - string name, - string symbol, - uint8 decimals, - bytes ipfsHash, - bytes swarmHash - ); - - event LogTokenNameChange(address indexed token, string oldName, string newName); - event LogTokenSymbolChange(address indexed token, string oldSymbol, string newSymbol); - event LogTokenIpfsHashChange(address indexed token, bytes oldIpfsHash, bytes newIpfsHash); - event LogTokenSwarmHashChange(address indexed token, bytes oldSwarmHash, bytes newSwarmHash); - - mapping (address => TokenMetadata) public tokens; - mapping (string => address) tokenBySymbol; - mapping (string => address) tokenByName; - - address[] public tokenAddresses; - - struct TokenMetadata { - address token; - string name; - string symbol; - uint8 decimals; - bytes ipfsHash; - bytes swarmHash; - } - - modifier tokenExists(address _token) { - require(tokens[_token].token != address(0)); - _; - } - - modifier tokenDoesNotExist(address _token) { - require(tokens[_token].token == address(0)); - _; - } - - modifier nameDoesNotExist(string _name) { - require(tokenByName[_name] == address(0)); - _; - } - - modifier symbolDoesNotExist(string _symbol) { - require(tokenBySymbol[_symbol] == address(0)); - _; - } - - modifier addressNotNull(address _address) { - require(_address != address(0)); - _; - } - - - /// @dev Allows owner to add a new token to the registry. - /// @param _token Address of new token. - /// @param _name Name of new token. - /// @param _symbol Symbol for new token. - /// @param _decimals Number of decimals, divisibility of new token. - /// @param _ipfsHash IPFS hash of token icon. - /// @param _swarmHash Swarm hash of token icon. - function addToken( - address _token, - string _name, - string _symbol, - uint8 _decimals, - bytes _ipfsHash, - bytes _swarmHash) - public - onlyOwner - tokenDoesNotExist(_token) - addressNotNull(_token) - symbolDoesNotExist(_symbol) - nameDoesNotExist(_name) - { - tokens[_token] = TokenMetadata({ - token: _token, - name: _name, - symbol: _symbol, - decimals: _decimals, - ipfsHash: _ipfsHash, - swarmHash: _swarmHash - }); - tokenAddresses.push(_token); - tokenBySymbol[_symbol] = _token; - tokenByName[_name] = _token; - LogAddToken( - _token, - _name, - _symbol, - _decimals, - _ipfsHash, - _swarmHash - ); - } - - /// @dev Allows owner to remove an existing token from the registry. - /// @param _token Address of existing token. - function removeToken(address _token, uint _index) - public - onlyOwner - tokenExists(_token) - { - require(tokenAddresses[_index] == _token); - - tokenAddresses[_index] = tokenAddresses[tokenAddresses.length - 1]; - tokenAddresses.length -= 1; - - TokenMetadata storage token = tokens[_token]; - LogRemoveToken( - token.token, - token.name, - token.symbol, - token.decimals, - token.ipfsHash, - token.swarmHash - ); - delete tokenBySymbol[token.symbol]; - delete tokenByName[token.name]; - delete tokens[_token]; - } - - /// @dev Allows owner to modify an existing token's name. - /// @param _token Address of existing token. - /// @param _name New name. - function setTokenName(address _token, string _name) - public - onlyOwner - tokenExists(_token) - nameDoesNotExist(_name) - { - TokenMetadata storage token = tokens[_token]; - LogTokenNameChange(_token, token.name, _name); - delete tokenByName[token.name]; - tokenByName[_name] = _token; - token.name = _name; - } - - /// @dev Allows owner to modify an existing token's symbol. - /// @param _token Address of existing token. - /// @param _symbol New symbol. - function setTokenSymbol(address _token, string _symbol) - public - onlyOwner - tokenExists(_token) - symbolDoesNotExist(_symbol) - { - TokenMetadata storage token = tokens[_token]; - LogTokenSymbolChange(_token, token.symbol, _symbol); - delete tokenBySymbol[token.symbol]; - tokenBySymbol[_symbol] = _token; - token.symbol = _symbol; - } - - /// @dev Allows owner to modify an existing token's IPFS hash. - /// @param _token Address of existing token. - /// @param _ipfsHash New IPFS hash. - function setTokenIpfsHash(address _token, bytes _ipfsHash) - public - onlyOwner - tokenExists(_token) - { - TokenMetadata storage token = tokens[_token]; - LogTokenIpfsHashChange(_token, token.ipfsHash, _ipfsHash); - token.ipfsHash = _ipfsHash; - } - - /// @dev Allows owner to modify an existing token's Swarm hash. - /// @param _token Address of existing token. - /// @param _swarmHash New Swarm hash. - function setTokenSwarmHash(address _token, bytes _swarmHash) - public - onlyOwner - tokenExists(_token) - { - TokenMetadata storage token = tokens[_token]; - LogTokenSwarmHashChange(_token, token.swarmHash, _swarmHash); - token.swarmHash = _swarmHash; - } - - /* - * Web3 call functions - */ - - /// @dev Provides a registered token's address when given the token symbol. - /// @param _symbol Symbol of registered token. - /// @return Token's address. - function getTokenAddressBySymbol(string _symbol) constant returns (address) { - return tokenBySymbol[_symbol]; - } - - /// @dev Provides a registered token's address when given the token name. - /// @param _name Name of registered token. - /// @return Token's address. - function getTokenAddressByName(string _name) constant returns (address) { - return tokenByName[_name]; - } - - /// @dev Provides a registered token's metadata, looked up by address. - /// @param _token Address of registered token. - /// @return Token metadata. - function getTokenMetaData(address _token) - public - constant - returns ( - address, //tokenAddress - string, //name - string, //symbol - uint8, //decimals - bytes, //ipfsHash - bytes //swarmHash - ) - { - TokenMetadata memory token = tokens[_token]; - return ( - token.token, - token.name, - token.symbol, - token.decimals, - token.ipfsHash, - token.swarmHash - ); - } - - /// @dev Provides a registered token's metadata, looked up by name. - /// @param _name Name of registered token. - /// @return Token metadata. - function getTokenByName(string _name) - public - constant - returns ( - address, //tokenAddress - string, //name - string, //symbol - uint8, //decimals - bytes, //ipfsHash - bytes //swarmHash - ) - { - address _token = tokenByName[_name]; - return getTokenMetaData(_token); - } - - /// @dev Provides a registered token's metadata, looked up by symbol. - /// @param _symbol Symbol of registered token. - /// @return Token metadata. - function getTokenBySymbol(string _symbol) - public - constant - returns ( - address, //tokenAddress - string, //name - string, //symbol - uint8, //decimals - bytes, //ipfsHash - bytes //swarmHash - ) - { - address _token = tokenBySymbol[_symbol]; - return getTokenMetaData(_token); - } - - /// @dev Returns an array containing all token addresses. - /// @return Array of token addresses. - function getTokenAddresses() - public - constant - returns (address[]) - { - return tokenAddresses; - } -} diff --git a/packages/contracts/src/1.0.0/TokenTransferProxy/TokenTransferProxy_v1.sol b/packages/contracts/src/1.0.0/TokenTransferProxy/TokenTransferProxy_v1.sol deleted file mode 100644 index e3659d8ba..000000000 --- a/packages/contracts/src/1.0.0/TokenTransferProxy/TokenTransferProxy_v1.sol +++ /dev/null @@ -1,115 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity ^0.4.11; - -import { Token_v1 as Token } from "../Token/Token_v1.sol"; -import { Ownable_v1 as Ownable } from "../Ownable/Ownable_v1.sol"; - -/// @title TokenTransferProxy - Transfers tokens on behalf of contracts that have been approved via decentralized governance. -/// @author Amir Bandeali - , Will Warren - -contract TokenTransferProxy_v1 is Ownable { - - /// @dev Only authorized addresses can invoke functions with this modifier. - modifier onlyAuthorized { - require(authorized[msg.sender]); - _; - } - - modifier targetAuthorized(address target) { - require(authorized[target]); - _; - } - - modifier targetNotAuthorized(address target) { - require(!authorized[target]); - _; - } - - mapping (address => bool) public authorized; - address[] public authorities; - - event LogAuthorizedAddressAdded(address indexed target, address indexed caller); - event LogAuthorizedAddressRemoved(address indexed target, address indexed caller); - - /* - * Public functions - */ - - /// @dev Authorizes an address. - /// @param target Address to authorize. - function addAuthorizedAddress(address target) - public - onlyOwner - targetNotAuthorized(target) - { - authorized[target] = true; - authorities.push(target); - LogAuthorizedAddressAdded(target, msg.sender); - } - - /// @dev Removes authorizion of an address. - /// @param target Address to remove authorization from. - function removeAuthorizedAddress(address target) - public - onlyOwner - targetAuthorized(target) - { - delete authorized[target]; - for (uint i = 0; i < authorities.length; i++) { - if (authorities[i] == target) { - authorities[i] = authorities[authorities.length - 1]; - authorities.length -= 1; - break; - } - } - LogAuthorizedAddressRemoved(target, msg.sender); - } - - /// @dev Calls into ERC20 Token contract, invoking transferFrom. - /// @param token Address of token to transfer. - /// @param from Address to transfer token from. - /// @param to Address to transfer token to. - /// @param value Amount of token to transfer. - /// @return Success of transfer. - function transferFrom( - address token, - address from, - address to, - uint value) - public - onlyAuthorized - returns (bool) - { - return Token(token).transferFrom(from, to, value); - } - - /* - * Public constant functions - */ - - /// @dev Gets all authorized addresses. - /// @return Array of authorized addresses. - function getAuthorizedAddresses() - public - constant - returns (address[]) - { - return authorities; - } -} diff --git a/packages/contracts/src/1.0.0/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol b/packages/contracts/src/1.0.0/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol deleted file mode 100644 index 46379c43d..000000000 --- a/packages/contracts/src/1.0.0/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol +++ /dev/null @@ -1,52 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity ^0.4.11; - -import { ERC20Token_v1 as ERC20Token } from "../ERC20Token/ERC20Token_v1.sol"; - -contract UnlimitedAllowanceToken_v1 is ERC20Token { - - uint constant MAX_UINT = 2**256 - 1; - - /// @dev ERC20 transferFrom, modified such that an allowance of MAX_UINT represents an unlimited allowance. - /// @param _from Address to transfer from. - /// @param _to Address to transfer to. - /// @param _value Amount to transfer. - /// @return Success of transfer. - function transferFrom(address _from, address _to, uint _value) - public - returns (bool) - { - uint allowance = allowed[_from][msg.sender]; - if (balances[_from] >= _value - && allowance >= _value - && balances[_to] + _value >= balances[_to] - ) { - balances[_to] += _value; - balances[_from] -= _value; - if (allowance < MAX_UINT) { - allowed[_from][msg.sender] -= _value; - } - Transfer(_from, _to, _value); - return true; - } else { - return false; - } - } -} diff --git a/packages/contracts/src/2.0.0/examples/ExchangeWrapper/ExchangeWrapper.sol b/packages/contracts/src/2.0.0/examples/ExchangeWrapper/ExchangeWrapper.sol deleted file mode 100644 index 2fa0e3c5e..000000000 --- a/packages/contracts/src/2.0.0/examples/ExchangeWrapper/ExchangeWrapper.sol +++ /dev/null @@ -1,100 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "../../protocol/Exchange/interfaces/IExchange.sol"; -import "../../protocol/Exchange/libs/LibOrder.sol"; - - -contract ExchangeWrapper { - - // Exchange contract. - // solhint-disable-next-line var-name-mixedcase - IExchange internal EXCHANGE; - - constructor (address _exchange) - public - { - EXCHANGE = IExchange(_exchange); - } - - /// @dev Cancels all orders created by sender with a salt less than or equal to the targetOrderEpoch - /// and senderAddress equal to this contract. - /// @param targetOrderEpoch Orders created with a salt less or equal to this value will be cancelled. - /// @param salt Arbitrary value to gaurantee uniqueness of 0x transaction hash. - /// @param makerSignature Proof that maker wishes to call this function with given params. - function cancelOrdersUpTo( - uint256 targetOrderEpoch, - uint256 salt, - bytes makerSignature - ) - external - { - address makerAddress = msg.sender; - - // Encode arguments into byte array. - bytes memory data = abi.encodeWithSelector( - EXCHANGE.cancelOrdersUpTo.selector, - targetOrderEpoch - ); - - // Call `cancelOrdersUpTo` via `executeTransaction`. - EXCHANGE.executeTransaction( - salt, - makerAddress, - data, - makerSignature - ); - } - - /// @dev Fills an order using `msg.sender` as the taker. - /// @param order Order struct containing order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param salt Arbitrary value to gaurantee uniqueness of 0x transaction hash. - /// @param orderSignature Proof that order has been created by maker. - /// @param takerSignature Proof that taker wishes to call this function with given params. - function fillOrder( - LibOrder.Order memory order, - uint256 takerAssetFillAmount, - uint256 salt, - bytes memory orderSignature, - bytes memory takerSignature - ) - public - { - address takerAddress = msg.sender; - - // Encode arguments into byte array. - bytes memory data = abi.encodeWithSelector( - EXCHANGE.fillOrder.selector, - order, - takerAssetFillAmount, - orderSignature - ); - - // Call `fillOrder` via `executeTransaction`. - EXCHANGE.executeTransaction( - salt, - takerAddress, - data, - takerSignature - ); - } -} diff --git a/packages/contracts/src/2.0.0/examples/Validator/Validator.sol b/packages/contracts/src/2.0.0/examples/Validator/Validator.sol deleted file mode 100644 index 72ed528ba..000000000 --- a/packages/contracts/src/2.0.0/examples/Validator/Validator.sol +++ /dev/null @@ -1,56 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../protocol/Exchange/interfaces/IValidator.sol"; - - -contract Validator is - IValidator -{ - - // The single valid signer for this wallet. - // solhint-disable-next-line var-name-mixedcase - address internal VALID_SIGNER; - - /// @dev constructs a new `Validator` with a single valid signer. - /// @param validSigner The sole, valid signer. - constructor (address validSigner) public { - VALID_SIGNER = validSigner; - } - - /// @dev Verifies that a signature is valid. `signer` must match `VALID_SIGNER`. - /// @param hash Message hash that is signed. - /// @param signerAddress Address that should have signed the given hash. - /// @param signature Proof of signing. - /// @return Validity of signature. - // solhint-disable no-unused-vars - function isValidSignature( - bytes32 hash, - address signerAddress, - bytes signature - ) - external - view - returns (bool isValid) - { - return (signerAddress == VALID_SIGNER); - } - // solhint-enable no-unused-vars -} diff --git a/packages/contracts/src/2.0.0/examples/Wallet/Wallet.sol b/packages/contracts/src/2.0.0/examples/Wallet/Wallet.sol deleted file mode 100644 index b75021a31..000000000 --- a/packages/contracts/src/2.0.0/examples/Wallet/Wallet.sol +++ /dev/null @@ -1,65 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../protocol/Exchange/interfaces/IWallet.sol"; -import "../../utils/LibBytes/LibBytes.sol"; - - -contract Wallet is - IWallet -{ - using LibBytes for bytes; - - // The owner of this wallet. - // solhint-disable-next-line var-name-mixedcase - address internal WALLET_OWNER; - - /// @dev constructs a new `Wallet` with a single owner. - /// @param walletOwner The owner of this wallet. - constructor (address walletOwner) public { - WALLET_OWNER = walletOwner; - } - - /// @dev Validates an EIP712 signature. - /// The signer must match the owner of this wallet. - /// @param hash Message hash that is signed. - /// @param eip712Signature Proof of signing. - /// @return Validity of signature. - function isValidSignature( - bytes32 hash, - bytes eip712Signature - ) - external - view - returns (bool isValid) - { - require( - eip712Signature.length == 65, - "LENGTH_65_REQUIRED" - ); - - uint8 v = uint8(eip712Signature[0]); - bytes32 r = eip712Signature.readBytes32(1); - bytes32 s = eip712Signature.readBytes32(33); - address recoveredAddress = ecrecover(hash, v, r, s); - isValid = WALLET_OWNER == recoveredAddress; - return isValid; - } -} diff --git a/packages/contracts/src/2.0.0/examples/Whitelist/Whitelist.sol b/packages/contracts/src/2.0.0/examples/Whitelist/Whitelist.sol deleted file mode 100644 index e4e25038c..000000000 --- a/packages/contracts/src/2.0.0/examples/Whitelist/Whitelist.sol +++ /dev/null @@ -1,136 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "../../protocol/Exchange/interfaces/IExchange.sol"; -import "../../protocol/Exchange/libs/LibOrder.sol"; -import "../../utils/Ownable/Ownable.sol"; - - -contract Whitelist is - Ownable -{ - - // Mapping of address => whitelist status. - mapping (address => bool) public isWhitelisted; - - // Exchange contract. - // solhint-disable var-name-mixedcase - IExchange internal EXCHANGE; - bytes internal TX_ORIGIN_SIGNATURE; - // solhint-enable var-name-mixedcase - - byte constant internal VALIDATOR_SIGNATURE_BYTE = "\x05"; - - constructor (address _exchange) - public - { - EXCHANGE = IExchange(_exchange); - TX_ORIGIN_SIGNATURE = abi.encodePacked(address(this), VALIDATOR_SIGNATURE_BYTE); - } - - /// @dev Adds or removes an address from the whitelist. - /// @param target Address to add or remove from whitelist. - /// @param isApproved Whitelist status to assign to address. - function updateWhitelistStatus( - address target, - bool isApproved - ) - external - onlyOwner - { - isWhitelisted[target] = isApproved; - } - - /// @dev Verifies signer is same as signer of current Ethereum transaction. - /// NOTE: This function can currently be used to validate signatures coming from outside of this contract. - /// Extra safety checks can be added for a production contract. - /// @param signerAddress Address that should have signed the given hash. - /// @param signature Proof of signing. - /// @return Validity of order signature. - // solhint-disable no-unused-vars - function isValidSignature( - bytes32 hash, - address signerAddress, - bytes signature - ) - external - view - returns (bool isValid) - { - // solhint-disable-next-line avoid-tx-origin - return signerAddress == tx.origin; - } - // solhint-enable no-unused-vars - - /// @dev Fills an order using `msg.sender` as the taker. - /// The transaction will revert if both the maker and taker are not whitelisted. - /// Orders should specify this contract as the `senderAddress` in order to gaurantee - /// that both maker and taker have been whitelisted. - /// @param order Order struct containing order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param salt Arbitrary value to gaurantee uniqueness of 0x transaction hash. - /// @param orderSignature Proof that order has been created by maker. - function fillOrderIfWhitelisted( - LibOrder.Order memory order, - uint256 takerAssetFillAmount, - uint256 salt, - bytes memory orderSignature - ) - public - { - address takerAddress = msg.sender; - - // This contract must be the entry point for the transaction. - require( - // solhint-disable-next-line avoid-tx-origin - takerAddress == tx.origin, - "INVALID_SENDER" - ); - - // Check if maker is on the whitelist. - require( - isWhitelisted[order.makerAddress], - "MAKER_NOT_WHITELISTED" - ); - - // Check if taker is on the whitelist. - require( - isWhitelisted[takerAddress], - "TAKER_NOT_WHITELISTED" - ); - - // Encode arguments into byte array. - bytes memory data = abi.encodeWithSelector( - EXCHANGE.fillOrder.selector, - order, - takerAssetFillAmount, - orderSignature - ); - - // Call `fillOrder` via `executeTransaction`. - EXCHANGE.executeTransaction( - salt, - takerAddress, - data, - TX_ORIGIN_SIGNATURE - ); - } -} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/Forwarder.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/Forwarder.sol deleted file mode 100644 index 94dec40ed..000000000 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/Forwarder.sol +++ /dev/null @@ -1,50 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "./MixinWeth.sol"; -import "./MixinForwarderCore.sol"; -import "./libs/LibConstants.sol"; -import "./MixinAssets.sol"; -import "./MixinExchangeWrapper.sol"; - - -// solhint-disable no-empty-blocks -contract Forwarder is - LibConstants, - MixinWeth, - MixinAssets, - MixinExchangeWrapper, - MixinForwarderCore -{ - constructor ( - address _exchange, - bytes memory _zrxAssetData, - bytes memory _wethAssetData - ) - public - LibConstants( - _exchange, - _zrxAssetData, - _wethAssetData - ) - MixinForwarderCore() - {} -} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinAssets.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinAssets.sol deleted file mode 100644 index 43efb5ff3..000000000 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinAssets.sol +++ /dev/null @@ -1,143 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../utils/LibBytes/LibBytes.sol"; -import "../../utils/Ownable/Ownable.sol"; -import "../../tokens/ERC20Token/IERC20Token.sol"; -import "../../tokens/ERC721Token/IERC721Token.sol"; -import "./libs/LibConstants.sol"; -import "./mixins/MAssets.sol"; - - -contract MixinAssets is - Ownable, - LibConstants, - MAssets -{ - using LibBytes for bytes; - - bytes4 constant internal ERC20_TRANSFER_SELECTOR = bytes4(keccak256("transfer(address,uint256)")); - - /// @dev Withdraws assets from this contract. The contract requires a ZRX balance in order to - /// function optimally, and this function allows the ZRX to be withdrawn by owner. It may also be - /// used to withdraw assets that were accidentally sent to this contract. - /// @param assetData Byte array encoded for the respective asset proxy. - /// @param amount Amount of ERC20 token to withdraw. - function withdrawAsset( - bytes assetData, - uint256 amount - ) - external - onlyOwner - { - transferAssetToSender(assetData, amount); - } - - /// @dev Transfers given amount of asset to sender. - /// @param assetData Byte array encoded for the respective asset proxy. - /// @param amount Amount of asset to transfer to sender. - function transferAssetToSender( - bytes memory assetData, - uint256 amount - ) - internal - { - bytes4 proxyId = assetData.readBytes4(0); - - if (proxyId == ERC20_DATA_ID) { - transferERC20Token(assetData, amount); - } else if (proxyId == ERC721_DATA_ID) { - transferERC721Token(assetData, amount); - } else { - revert("UNSUPPORTED_ASSET_PROXY"); - } - } - - /// @dev Decodes ERC20 assetData and transfers given amount to sender. - /// @param assetData Byte array encoded for the respective asset proxy. - /// @param amount Amount of asset to transfer to sender. - function transferERC20Token( - bytes memory assetData, - uint256 amount - ) - internal - { - address token = assetData.readAddress(16); - - // Transfer tokens. - // We do a raw call so we can check the success separate - // from the return data. - bool success = token.call(abi.encodeWithSelector( - ERC20_TRANSFER_SELECTOR, - msg.sender, - amount - )); - require( - success, - "TRANSFER_FAILED" - ); - - // Check return data. - // If there is no return data, we assume the token incorrectly - // does not return a bool. In this case we expect it to revert - // on failure, which was handled above. - // If the token does return data, we require that it is a single - // value that evaluates to true. - assembly { - if returndatasize { - success := 0 - if eq(returndatasize, 32) { - // First 64 bytes of memory are reserved scratch space - returndatacopy(0, 0, 32) - success := mload(0) - } - } - } - require( - success, - "TRANSFER_FAILED" - ); - } - - /// @dev Decodes ERC721 assetData and transfers given amount to sender. - /// @param assetData Byte array encoded for the respective asset proxy. - /// @param amount Amount of asset to transfer to sender. - function transferERC721Token( - bytes memory assetData, - uint256 amount - ) - internal - { - require( - amount == 1, - "INVALID_AMOUNT" - ); - // Decode asset data. - address token = assetData.readAddress(16); - uint256 tokenId = assetData.readUint256(36); - - // Perform transfer. - IERC721Token(token).transferFrom( - address(this), - msg.sender, - tokenId - ); - } -} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol deleted file mode 100644 index fea9a53c2..000000000 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinExchangeWrapper.sol +++ /dev/null @@ -1,256 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "./libs/LibConstants.sol"; -import "./mixins/MExchangeWrapper.sol"; -import "../../protocol/Exchange/libs/LibAbiEncoder.sol"; -import "../../protocol/Exchange/libs/LibOrder.sol"; -import "../../protocol/Exchange/libs/LibFillResults.sol"; -import "../../protocol/Exchange/libs/LibMath.sol"; - - -contract MixinExchangeWrapper is - LibAbiEncoder, - LibFillResults, - LibMath, - LibConstants, - MExchangeWrapper -{ - /// @dev Fills the input order. - /// Returns false if the transaction would otherwise revert. - /// @param order Order struct containing order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param signature Proof that order has been created by maker. - /// @return Amounts filled and fees paid by maker and taker. - function fillOrderNoThrow( - LibOrder.Order memory order, - uint256 takerAssetFillAmount, - bytes memory signature - ) - internal - returns (FillResults memory fillResults) - { - // ABI encode calldata for `fillOrder` - bytes memory fillOrderCalldata = abiEncodeFillOrder( - order, - takerAssetFillAmount, - signature - ); - - address exchange = address(EXCHANGE); - - // Call `fillOrder` and handle any exceptions gracefully - assembly { - let success := call( - gas, // forward all gas - exchange, // call address of Exchange contract - 0, // transfer 0 wei - add(fillOrderCalldata, 32), // pointer to start of input (skip array length in first 32 bytes) - mload(fillOrderCalldata), // length of input - fillOrderCalldata, // write output over input - 128 // output size is 128 bytes - ) - if success { - mstore(fillResults, mload(fillOrderCalldata)) - mstore(add(fillResults, 32), mload(add(fillOrderCalldata, 32))) - mstore(add(fillResults, 64), mload(add(fillOrderCalldata, 64))) - mstore(add(fillResults, 96), mload(add(fillOrderCalldata, 96))) - } - } - // fillResults values will be 0 by default if call was unsuccessful - return fillResults; - } - - /// @dev Synchronously executes multiple calls of fillOrder until total amount of WETH has been sold by taker. - /// Returns false if the transaction would otherwise revert. - /// @param orders Array of order specifications. - /// @param wethSellAmount Desired amount of WETH to sell. - /// @param signatures Proofs that orders have been signed by makers. - /// @return Amounts filled and fees paid by makers and taker. - function marketSellWeth( - LibOrder.Order[] memory orders, - uint256 wethSellAmount, - bytes[] memory signatures - ) - internal - returns (FillResults memory totalFillResults) - { - bytes memory makerAssetData = orders[0].makerAssetData; - bytes memory wethAssetData = WETH_ASSET_DATA; - - uint256 ordersLength = orders.length; - for (uint256 i = 0; i != ordersLength; i++) { - - // We assume that asset being bought by taker is the same for each order. - // We assume that asset being sold by taker is WETH for each order. - orders[i].makerAssetData = makerAssetData; - orders[i].takerAssetData = wethAssetData; - - // Calculate the remaining amount of WETH to sell - uint256 remainingTakerAssetFillAmount = safeSub(wethSellAmount, totalFillResults.takerAssetFilledAmount); - - // Attempt to sell the remaining amount of WETH - FillResults memory singleFillResults = fillOrderNoThrow( - orders[i], - remainingTakerAssetFillAmount, - signatures[i] - ); - - // Update amounts filled and fees paid by maker and taker - addFillResults(totalFillResults, singleFillResults); - - // Stop execution if the entire amount of takerAsset has been sold - if (totalFillResults.takerAssetFilledAmount >= wethSellAmount) { - break; - } - } - return totalFillResults; - } - - /// @dev Synchronously executes multiple fill orders in a single transaction until total amount is bought by taker. - /// Returns false if the transaction would otherwise revert. - /// The asset being sold by taker must always be WETH. - /// @param orders Array of order specifications. - /// @param makerAssetFillAmount Desired amount of makerAsset to buy. - /// @param signatures Proofs that orders have been signed by makers. - /// @return Amounts filled and fees paid by makers and taker. - function marketBuyExactAmountWithWeth( - LibOrder.Order[] memory orders, - uint256 makerAssetFillAmount, - bytes[] memory signatures - ) - internal - returns (FillResults memory totalFillResults) - { - bytes memory makerAssetData = orders[0].makerAssetData; - bytes memory wethAssetData = WETH_ASSET_DATA; - - uint256 ordersLength = orders.length; - for (uint256 i = 0; i != ordersLength; i++) { - - // We assume that asset being bought by taker is the same for each order. - // We assume that asset being sold by taker is WETH for each order. - orders[i].makerAssetData = makerAssetData; - orders[i].takerAssetData = wethAssetData; - - // Calculate the remaining amount of makerAsset to buy - uint256 remainingMakerAssetFillAmount = safeSub(makerAssetFillAmount, totalFillResults.makerAssetFilledAmount); - - // Convert the remaining amount of makerAsset to buy into remaining amount - // of takerAsset to sell, assuming entire amount can be sold in the current order - uint256 remainingTakerAssetFillAmount = getPartialAmountFloor( - orders[i].takerAssetAmount, - orders[i].makerAssetAmount, - remainingMakerAssetFillAmount - ); - - // Attempt to sell the remaining amount of takerAsset - FillResults memory singleFillResults = fillOrderNoThrow( - orders[i], - remainingTakerAssetFillAmount, - signatures[i] - ); - - // Update amounts filled and fees paid by maker and taker - addFillResults(totalFillResults, singleFillResults); - - // Stop execution if the entire amount of makerAsset has been bought - uint256 makerAssetFilledAmount = totalFillResults.makerAssetFilledAmount; - if (makerAssetFilledAmount >= makerAssetFillAmount) { - break; - } - } - - require( - makerAssetFilledAmount >= makerAssetFillAmount, - "COMPLETE_FILL_FAILED" - ); - return totalFillResults; - } - - /// @dev Buys zrxBuyAmount of ZRX fee tokens, taking into account ZRX fees for each order. This will guarantee - /// that at least zrxBuyAmount of ZRX is purchased (sometimes slightly over due to rounding issues). - /// It is possible that a request to buy 200 ZRX will require purchasing 202 ZRX - /// as 2 ZRX is required to purchase the 200 ZRX fee tokens. This guarantees at least 200 ZRX for future purchases. - /// The asset being sold by taker must always be WETH. - /// @param orders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. - /// @param zrxBuyAmount Desired amount of ZRX to buy. - /// @param signatures Proofs that orders have been created by makers. - /// @return totalFillResults Amounts filled and fees paid by maker and taker. - function marketBuyExactZrxWithWeth( - LibOrder.Order[] memory orders, - uint256 zrxBuyAmount, - bytes[] memory signatures - ) - internal - returns (FillResults memory totalFillResults) - { - // Do nothing if zrxBuyAmount == 0 - if (zrxBuyAmount == 0) { - return totalFillResults; - } - - bytes memory zrxAssetData = ZRX_ASSET_DATA; - bytes memory wethAssetData = WETH_ASSET_DATA; - uint256 zrxPurchased = 0; - - uint256 ordersLength = orders.length; - for (uint256 i = 0; i != ordersLength; i++) { - - // All of these are ZRX/WETH, so we can drop the respective assetData from calldata. - orders[i].makerAssetData = zrxAssetData; - orders[i].takerAssetData = wethAssetData; - - // Calculate the remaining amount of ZRX to buy. - uint256 remainingZrxBuyAmount = safeSub(zrxBuyAmount, zrxPurchased); - - // Convert the remaining amount of ZRX to buy into remaining amount - // of WETH to sell, assuming entire amount can be sold in the current order. - uint256 remainingWethSellAmount = getPartialAmountFloor( - orders[i].takerAssetAmount, - safeSub(orders[i].makerAssetAmount, orders[i].takerFee), // our exchange rate after fees - remainingZrxBuyAmount - ); - - // Attempt to sell the remaining amount of WETH. - FillResults memory singleFillResult = fillOrderNoThrow( - orders[i], - safeAdd(remainingWethSellAmount, 1), // we add 1 wei to the fill amount to make up for rounding errors - signatures[i] - ); - - // Update amounts filled and fees paid by maker and taker. - addFillResults(totalFillResults, singleFillResult); - zrxPurchased = safeSub(totalFillResults.makerAssetFilledAmount, totalFillResults.takerFeePaid); - - // Stop execution if the entire amount of ZRX has been bought. - if (zrxPurchased >= zrxBuyAmount) { - break; - } - } - - require( - zrxPurchased >= zrxBuyAmount, - "COMPLETE_FILL_FAILED" - ); - return totalFillResults; - } -} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol deleted file mode 100644 index 54487f726..000000000 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol +++ /dev/null @@ -1,214 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "./libs/LibConstants.sol"; -import "./mixins/MWeth.sol"; -import "./mixins/MAssets.sol"; -import "./mixins/MExchangeWrapper.sol"; -import "./interfaces/IForwarderCore.sol"; -import "../../utils/LibBytes/LibBytes.sol"; -import "../../protocol/Exchange/libs/LibOrder.sol"; -import "../../protocol/Exchange/libs/LibFillResults.sol"; -import "../../protocol/Exchange/libs/LibMath.sol"; - - -contract MixinForwarderCore is - LibFillResults, - LibMath, - LibConstants, - MWeth, - MAssets, - MExchangeWrapper, - IForwarderCore -{ - using LibBytes for bytes; - - /// @dev Constructor approves ERC20 proxy to transfer ZRX and WETH on this contract's behalf. - constructor () - public - { - address proxyAddress = EXCHANGE.getAssetProxy(ERC20_DATA_ID); - require( - proxyAddress != address(0), - "UNREGISTERED_ASSET_PROXY" - ); - ETHER_TOKEN.approve(proxyAddress, MAX_UINT); - ZRX_TOKEN.approve(proxyAddress, MAX_UINT); - } - - /// @dev Purchases as much of orders' makerAssets as possible by selling up to 95% of transaction's ETH value. - /// Any ZRX required to pay fees for primary orders will automatically be purchased by this contract. - /// 5% of ETH value is reserved for paying fees to order feeRecipients (in ZRX) and forwarding contract feeRecipient (in ETH). - /// Any ETH not spent will be refunded to sender. - /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset. - /// @param signatures Proofs that orders have been created by makers. - /// @param feeOrders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. Used to purchase ZRX for primary order fees. - /// @param feeSignatures Proofs that feeOrders have been created by makers. - /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient. - /// @param feeRecipient Address that will receive ETH when orders are filled. - /// @return Amounts filled and fees paid by maker and taker for both sets of orders. - function marketSellOrdersWithEth( - LibOrder.Order[] memory orders, - bytes[] memory signatures, - LibOrder.Order[] memory feeOrders, - bytes[] memory feeSignatures, - uint256 feePercentage, - address feeRecipient - ) - public - payable - returns ( - FillResults memory orderFillResults, - FillResults memory feeOrderFillResults - ) - { - // Convert ETH to WETH. - convertEthToWeth(); - - uint256 wethSellAmount; - uint256 zrxBuyAmount; - uint256 makerAssetAmountPurchased; - if (orders[0].makerAssetData.equals(ZRX_ASSET_DATA)) { - // Calculate amount of WETH that won't be spent on ETH fees. - wethSellAmount = getPartialAmountFloor( - PERCENTAGE_DENOMINATOR, - safeAdd(PERCENTAGE_DENOMINATOR, feePercentage), - msg.value - ); - // Market sell available WETH. - // ZRX fees are paid with this contract's balance. - orderFillResults = marketSellWeth( - orders, - wethSellAmount, - signatures - ); - // The fee amount must be deducted from the amount transfered back to sender. - makerAssetAmountPurchased = safeSub(orderFillResults.makerAssetFilledAmount, orderFillResults.takerFeePaid); - } else { - // 5% of WETH is reserved for filling feeOrders and paying feeRecipient. - wethSellAmount = getPartialAmountFloor( - MAX_WETH_FILL_PERCENTAGE, - PERCENTAGE_DENOMINATOR, - msg.value - ); - // Market sell 95% of WETH. - // ZRX fees are payed with this contract's balance. - orderFillResults = marketSellWeth( - orders, - wethSellAmount, - signatures - ); - // Buy back all ZRX spent on fees. - zrxBuyAmount = orderFillResults.takerFeePaid; - feeOrderFillResults = marketBuyExactZrxWithWeth( - feeOrders, - zrxBuyAmount, - feeSignatures - ); - makerAssetAmountPurchased = orderFillResults.makerAssetFilledAmount; - } - - // Transfer feePercentage of total ETH spent on primary orders to feeRecipient. - // Refund remaining ETH to msg.sender. - transferEthFeeAndRefund( - orderFillResults.takerAssetFilledAmount, - feeOrderFillResults.takerAssetFilledAmount, - feePercentage, - feeRecipient - ); - - // Transfer purchased assets to msg.sender. - transferAssetToSender(orders[0].makerAssetData, makerAssetAmountPurchased); - } - - /// @dev Attempt to purchase makerAssetFillAmount of makerAsset by selling ETH provided with transaction. - /// Any ZRX required to pay fees for primary orders will automatically be purchased by this contract. - /// Any ETH not spent will be refunded to sender. - /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset. - /// @param makerAssetFillAmount Desired amount of makerAsset to purchase. - /// @param signatures Proofs that orders have been created by makers. - /// @param feeOrders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. Used to purchase ZRX for primary order fees. - /// @param feeSignatures Proofs that feeOrders have been created by makers. - /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient. - /// @param feeRecipient Address that will receive ETH when orders are filled. - /// @return Amounts filled and fees paid by maker and taker for both sets of orders. - function marketBuyOrdersWithEth( - LibOrder.Order[] memory orders, - uint256 makerAssetFillAmount, - bytes[] memory signatures, - LibOrder.Order[] memory feeOrders, - bytes[] memory feeSignatures, - uint256 feePercentage, - address feeRecipient - ) - public - payable - returns ( - FillResults memory orderFillResults, - FillResults memory feeOrderFillResults - ) - { - // Convert ETH to WETH. - convertEthToWeth(); - - uint256 zrxBuyAmount; - uint256 makerAssetAmountPurchased; - if (orders[0].makerAssetData.equals(ZRX_ASSET_DATA)) { - // If the makerAsset is ZRX, it is not necessary to pay fees out of this - // contracts's ZRX balance because fees are factored into the price of the order. - orderFillResults = marketBuyExactZrxWithWeth( - orders, - makerAssetFillAmount, - signatures - ); - // The fee amount must be deducted from the amount transfered back to sender. - makerAssetAmountPurchased = safeSub(orderFillResults.makerAssetFilledAmount, orderFillResults.takerFeePaid); - } else { - // Attemp to purchase desired amount of makerAsset. - // ZRX fees are payed with this contract's balance. - orderFillResults = marketBuyExactAmountWithWeth( - orders, - makerAssetFillAmount, - signatures - ); - // Buy back all ZRX spent on fees. - zrxBuyAmount = orderFillResults.takerFeePaid; - feeOrderFillResults = marketBuyExactZrxWithWeth( - feeOrders, - zrxBuyAmount, - feeSignatures - ); - makerAssetAmountPurchased = orderFillResults.makerAssetFilledAmount; - } - - // Transfer feePercentage of total ETH spent on primary orders to feeRecipient. - // Refund remaining ETH to msg.sender. - transferEthFeeAndRefund( - orderFillResults.takerAssetFilledAmount, - feeOrderFillResults.takerAssetFilledAmount, - feePercentage, - feeRecipient - ); - - // Transfer purchased assets to msg.sender. - transferAssetToSender(orders[0].makerAssetData, makerAssetAmountPurchased); - } -} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinWeth.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinWeth.sol deleted file mode 100644 index d2814a49b..000000000 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinWeth.sol +++ /dev/null @@ -1,113 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../protocol/Exchange/libs/LibMath.sol"; -import "./libs/LibConstants.sol"; -import "./mixins/MWeth.sol"; - - -contract MixinWeth is - LibMath, - LibConstants, - MWeth -{ - /// @dev Default payabale function, this allows us to withdraw WETH - function () - public - payable - { - require( - msg.sender == address(ETHER_TOKEN), - "DEFAULT_FUNCTION_WETH_CONTRACT_ONLY" - ); - } - - /// @dev Converts message call's ETH value into WETH. - function convertEthToWeth() - internal - { - require( - msg.value > 0, - "INVALID_MSG_VALUE" - ); - ETHER_TOKEN.deposit.value(msg.value)(); - } - - /// @dev Transfers feePercentage of WETH spent on primary orders to feeRecipient. - /// Refunds any excess ETH to msg.sender. - /// @param wethSoldExcludingFeeOrders Amount of WETH sold when filling primary orders. - /// @param wethSoldForZrx Amount of WETH sold when purchasing ZRX required for primary order fees. - /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient. - /// @param feeRecipient Address that will receive ETH when orders are filled. - function transferEthFeeAndRefund( - uint256 wethSoldExcludingFeeOrders, - uint256 wethSoldForZrx, - uint256 feePercentage, - address feeRecipient - ) - internal - { - // Ensure feePercentage is less than 5%. - require( - feePercentage <= MAX_FEE_PERCENTAGE, - "FEE_PERCENTAGE_TOO_LARGE" - ); - - // Ensure that no extra WETH owned by this contract has been sold. - uint256 wethSold = safeAdd(wethSoldExcludingFeeOrders, wethSoldForZrx); - require( - wethSold <= msg.value, - "OVERSOLD_WETH" - ); - - // Calculate amount of WETH that hasn't been sold. - uint256 wethRemaining = safeSub(msg.value, wethSold); - - // Calculate ETH fee to pay to feeRecipient. - uint256 ethFee = getPartialAmountFloor( - feePercentage, - PERCENTAGE_DENOMINATOR, - wethSoldExcludingFeeOrders - ); - - // Ensure fee is less than amount of WETH remaining. - require( - ethFee <= wethRemaining, - "INSUFFICIENT_ETH_REMAINING" - ); - - // Do nothing if no WETH remaining - if (wethRemaining > 0) { - // Convert remaining WETH to ETH - ETHER_TOKEN.withdraw(wethRemaining); - - // Pay ETH to feeRecipient - if (ethFee > 0) { - feeRecipient.transfer(ethFee); - } - - // Refund remaining ETH to msg.sender. - uint256 ethRefund = safeSub(wethRemaining, ethFee); - if (ethRefund > 0) { - msg.sender.transfer(ethRefund); - } - } - } -} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IAssets.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IAssets.sol deleted file mode 100644 index 1e034c003..000000000 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IAssets.sol +++ /dev/null @@ -1,34 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - - -contract IAssets { - - /// @dev Withdraws assets from this contract. The contract requires a ZRX balance in order to - /// function optimally, and this function allows the ZRX to be withdrawn by owner. It may also be - /// used to withdraw assets that were accidentally sent to this contract. - /// @param assetData Byte array encoded for the respective asset proxy. - /// @param amount Amount of ERC20 token to withdraw. - function withdrawAsset( - bytes assetData, - uint256 amount - ) - external; -} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IForwarder.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IForwarder.sol deleted file mode 100644 index f5a26e2ba..000000000 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IForwarder.sol +++ /dev/null @@ -1,30 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "./IForwarderCore.sol"; -import "./IAssets.sol"; - - -// solhint-disable no-empty-blocks -contract IForwarder is - IForwarderCore, - IAssets -{} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IForwarderCore.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IForwarderCore.sol deleted file mode 100644 index 74c7da01d..000000000 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/interfaces/IForwarderCore.sol +++ /dev/null @@ -1,80 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "../../../protocol/Exchange/libs/LibOrder.sol"; -import "../../../protocol/Exchange/libs/LibFillResults.sol"; - - -contract IForwarderCore { - - /// @dev Purchases as much of orders' makerAssets as possible by selling up to 95% of transaction's ETH value. - /// Any ZRX required to pay fees for primary orders will automatically be purchased by this contract. - /// 5% of ETH value is reserved for paying fees to order feeRecipients (in ZRX) and forwarding contract feeRecipient (in ETH). - /// Any ETH not spent will be refunded to sender. - /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset. - /// @param signatures Proofs that orders have been created by makers. - /// @param feeOrders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. Used to purchase ZRX for primary order fees. - /// @param feeSignatures Proofs that feeOrders have been created by makers. - /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient. - /// @param feeRecipient Address that will receive ETH when orders are filled. - /// @return Amounts filled and fees paid by maker and taker for both sets of orders. - function marketSellOrdersWithEth( - LibOrder.Order[] memory orders, - bytes[] memory signatures, - LibOrder.Order[] memory feeOrders, - bytes[] memory feeSignatures, - uint256 feePercentage, - address feeRecipient - ) - public - payable - returns ( - LibFillResults.FillResults memory orderFillResults, - LibFillResults.FillResults memory feeOrderFillResults - ); - - /// @dev Attempt to purchase makerAssetFillAmount of makerAsset by selling ETH provided with transaction. - /// Any ZRX required to pay fees for primary orders will automatically be purchased by this contract. - /// Any ETH not spent will be refunded to sender. - /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset. - /// @param makerAssetFillAmount Desired amount of makerAsset to purchase. - /// @param signatures Proofs that orders have been created by makers. - /// @param feeOrders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. Used to purchase ZRX for primary order fees. - /// @param feeSignatures Proofs that feeOrders have been created by makers. - /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient. - /// @param feeRecipient Address that will receive ETH when orders are filled. - /// @return Amounts filled and fees paid by maker and taker for both sets of orders. - function marketBuyOrdersWithEth( - LibOrder.Order[] memory orders, - uint256 makerAssetFillAmount, - bytes[] memory signatures, - LibOrder.Order[] memory feeOrders, - bytes[] memory feeSignatures, - uint256 feePercentage, - address feeRecipient - ) - public - payable - returns ( - LibFillResults.FillResults memory orderFillResults, - LibFillResults.FillResults memory feeOrderFillResults - ); -} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/libs/LibConstants.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/libs/LibConstants.sol deleted file mode 100644 index 704e42ce3..000000000 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/libs/LibConstants.sol +++ /dev/null @@ -1,62 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../../utils/LibBytes/LibBytes.sol"; -import "../../../protocol/Exchange/interfaces/IExchange.sol"; -import "../../../tokens/EtherToken/IEtherToken.sol"; -import "../../../tokens/ERC20Token/IERC20Token.sol"; - - -contract LibConstants { - - using LibBytes for bytes; - - bytes4 constant internal ERC20_DATA_ID = bytes4(keccak256("ERC20Token(address)")); - bytes4 constant internal ERC721_DATA_ID = bytes4(keccak256("ERC721Token(address,uint256)")); - uint256 constant internal MAX_UINT = 2**256 - 1; - uint256 constant internal PERCENTAGE_DENOMINATOR = 10**18; - uint256 constant internal MAX_FEE_PERCENTAGE = 5 * PERCENTAGE_DENOMINATOR / 100; // 5% - uint256 constant internal MAX_WETH_FILL_PERCENTAGE = 95 * PERCENTAGE_DENOMINATOR / 100; // 95% - - // solhint-disable var-name-mixedcase - IExchange internal EXCHANGE; - IEtherToken internal ETHER_TOKEN; - IERC20Token internal ZRX_TOKEN; - bytes internal ZRX_ASSET_DATA; - bytes internal WETH_ASSET_DATA; - // solhint-enable var-name-mixedcase - - constructor ( - address _exchange, - bytes memory _zrxAssetData, - bytes memory _wethAssetData - ) - public - { - EXCHANGE = IExchange(_exchange); - ZRX_ASSET_DATA = _zrxAssetData; - WETH_ASSET_DATA = _wethAssetData; - - address etherToken = _wethAssetData.readAddress(16); - address zrxToken = _zrxAssetData.readAddress(16); - ETHER_TOKEN = IEtherToken(etherToken); - ZRX_TOKEN = IERC20Token(zrxToken); - } -} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/libs/LibForwarderErrors.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/libs/LibForwarderErrors.sol deleted file mode 100644 index fb3ade1db..000000000 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/libs/LibForwarderErrors.sol +++ /dev/null @@ -1,34 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -// solhint-disable -pragma solidity 0.4.24; - - -/// This contract is intended to serve as a reference, but is not actually used for efficiency reasons. -contract LibForwarderErrors { - string constant FEE_PERCENTAGE_TOO_LARGE = "FEE_PROPORTION_TOO_LARGE"; // Provided fee percentage greater than 5%. - string constant INSUFFICIENT_ETH_REMAINING = "INSUFFICIENT_ETH_REMAINING"; // Not enough ETH remaining to pay feeRecipient. - string constant OVERSOLD_WETH = "OVERSOLD_WETH"; // More WETH sold than provided with current message call. - string constant COMPLETE_FILL_FAILED = "COMPLETE_FILL_FAILED"; // Desired purchase amount not completely filled (required for ZRX fees only). - string constant TRANSFER_FAILED = "TRANSFER_FAILED"; // Asset transfer failed. - string constant UNSUPPORTED_ASSET_PROXY = "UNSUPPORTED_ASSET_PROXY"; // Proxy in assetData not supported. - string constant DEFAULT_FUNCTION_WETH_CONTRACT_ONLY = "DEFAULT_FUNCTION_WETH_CONTRACT_ONLY"; // Fallback function may only be used for WETH withdrawals. - string constant INVALID_MSG_VALUE = "INVALID_MSG_VALUE"; // msg.value must be greater than 0. - string constant INVALID_AMOUNT = "INVALID_AMOUNT"; // Amount must equal 1. -} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MAssets.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MAssets.sol deleted file mode 100644 index 9e7f80d97..000000000 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MAssets.sol +++ /dev/null @@ -1,53 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../interfaces/IAssets.sol"; - - -contract MAssets is - IAssets -{ - /// @dev Transfers given amount of asset to sender. - /// @param assetData Byte array encoded for the respective asset proxy. - /// @param amount Amount of asset to transfer to sender. - function transferAssetToSender( - bytes memory assetData, - uint256 amount - ) - internal; - - /// @dev Decodes ERC20 assetData and transfers given amount to sender. - /// @param assetData Byte array encoded for the respective asset proxy. - /// @param amount Amount of asset to transfer to sender. - function transferERC20Token( - bytes memory assetData, - uint256 amount - ) - internal; - - /// @dev Decodes ERC721 assetData and transfers given amount to sender. - /// @param assetData Byte array encoded for the respective asset proxy. - /// @param amount Amount of asset to transfer to sender. - function transferERC721Token( - bytes memory assetData, - uint256 amount - ) - internal; -} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MExchangeWrapper.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MExchangeWrapper.sol deleted file mode 100644 index 13c26b03a..000000000 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MExchangeWrapper.sol +++ /dev/null @@ -1,87 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "../../../protocol/Exchange/libs/LibOrder.sol"; -import "../../../protocol/Exchange/libs/LibFillResults.sol"; - - -contract MExchangeWrapper { - - /// @dev Fills the input order. - /// Returns false if the transaction would otherwise revert. - /// @param order Order struct containing order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param signature Proof that order has been created by maker. - /// @return Amounts filled and fees paid by maker and taker. - function fillOrderNoThrow( - LibOrder.Order memory order, - uint256 takerAssetFillAmount, - bytes memory signature - ) - internal - returns (LibFillResults.FillResults memory fillResults); - - /// @dev Synchronously executes multiple calls of fillOrder until total amount of WETH has been sold by taker. - /// Returns false if the transaction would otherwise revert. - /// @param orders Array of order specifications. - /// @param wethSellAmount Desired amount of WETH to sell. - /// @param signatures Proofs that orders have been signed by makers. - /// @return Amounts filled and fees paid by makers and taker. - function marketSellWeth( - LibOrder.Order[] memory orders, - uint256 wethSellAmount, - bytes[] memory signatures - ) - internal - returns (LibFillResults.FillResults memory totalFillResults); - - /// @dev Synchronously executes multiple fill orders in a single transaction until total amount is bought by taker. - /// Returns false if the transaction would otherwise revert. - /// The asset being sold by taker must always be WETH. - /// @param orders Array of order specifications. - /// @param makerAssetFillAmount Desired amount of makerAsset to buy. - /// @param signatures Proofs that orders have been signed by makers. - /// @return Amounts filled and fees paid by makers and taker. - function marketBuyExactAmountWithWeth( - LibOrder.Order[] memory orders, - uint256 makerAssetFillAmount, - bytes[] memory signatures - ) - internal - returns (LibFillResults.FillResults memory totalFillResults); - - /// @dev Buys zrxBuyAmount of ZRX fee tokens, taking into account ZRX fees for each order. This will guarantee - /// that at least zrxBuyAmount of ZRX is purchased (sometimes slightly over due to rounding issues). - /// It is possible that a request to buy 200 ZRX will require purchasing 202 ZRX - /// as 2 ZRX is required to purchase the 200 ZRX fee tokens. This guarantees at least 200 ZRX for future purchases. - /// The asset being sold by taker must always be WETH. - /// @param orders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. - /// @param zrxBuyAmount Desired amount of ZRX to buy. - /// @param signatures Proofs that orders have been created by makers. - /// @return totalFillResults Amounts filled and fees paid by maker and taker. - function marketBuyExactZrxWithWeth( - LibOrder.Order[] memory orders, - uint256 zrxBuyAmount, - bytes[] memory signatures - ) - internal - returns (LibFillResults.FillResults memory totalFillResults); -} diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MWeth.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MWeth.sol deleted file mode 100644 index 88e77be4e..000000000 --- a/packages/contracts/src/2.0.0/extensions/Forwarder/mixins/MWeth.sol +++ /dev/null @@ -1,41 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - - -contract MWeth { - - /// @dev Converts message call's ETH value into WETH. - function convertEthToWeth() - internal; - - /// @dev Transfers feePercentage of WETH spent on primary orders to feeRecipient. - /// Refunds any excess ETH to msg.sender. - /// @param wethSoldExcludingFeeOrders Amount of WETH sold when filling primary orders. - /// @param wethSoldForZrx Amount of WETH sold when purchasing ZRX required for primary order fees. - /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient. - /// @param feeRecipient Address that will receive ETH when orders are filled. - function transferEthFeeAndRefund( - uint256 wethSoldExcludingFeeOrders, - uint256 wethSoldForZrx, - uint256 feePercentage, - address feeRecipient - ) - internal; -} diff --git a/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol b/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol deleted file mode 100644 index 8bfde3847..000000000 --- a/packages/contracts/src/2.0.0/extensions/OrderValidator/OrderValidator.sol +++ /dev/null @@ -1,218 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "../../protocol/Exchange/interfaces/IExchange.sol"; -import "../../protocol/Exchange/libs/LibOrder.sol"; -import "../../tokens/ERC20Token/IERC20Token.sol"; -import "../../tokens/ERC721Token/IERC721Token.sol"; -import "../../utils/LibBytes/LibBytes.sol"; - - -contract OrderValidator { - - using LibBytes for bytes; - - bytes4 constant internal ERC20_DATA_ID = bytes4(keccak256("ERC20Token(address)")); - bytes4 constant internal ERC721_DATA_ID = bytes4(keccak256("ERC721Token(address,uint256)")); - - struct TraderInfo { - uint256 makerBalance; // Maker's balance of makerAsset - uint256 makerAllowance; // Maker's allowance to corresponding AssetProxy - uint256 takerBalance; // Taker's balance of takerAsset - uint256 takerAllowance; // Taker's allowance to corresponding AssetProxy - uint256 makerZrxBalance; // Maker's balance of ZRX - uint256 makerZrxAllowance; // Maker's allowance of ZRX to ERC20Proxy - uint256 takerZrxBalance; // Taker's balance of ZRX - uint256 takerZrxAllowance; // Taker's allowance of ZRX to ERC20Proxy - } - - // solhint-disable var-name-mixedcase - IExchange internal EXCHANGE; - bytes internal ZRX_ASSET_DATA; - // solhint-enable var-name-mixedcase - - constructor (address _exchange, bytes memory _zrxAssetData) - public - { - EXCHANGE = IExchange(_exchange); - ZRX_ASSET_DATA = _zrxAssetData; - } - - /// @dev Fetches information for order and maker/taker of order. - /// @param order The order structure. - /// @param takerAddress Address that will be filling the order. - /// @return OrderInfo and TraderInfo instances for given order. - function getOrderAndTraderInfo(LibOrder.Order memory order, address takerAddress) - public - view - returns (LibOrder.OrderInfo memory orderInfo, TraderInfo memory traderInfo) - { - orderInfo = EXCHANGE.getOrderInfo(order); - traderInfo = getTraderInfo(order, takerAddress); - return (orderInfo, traderInfo); - } - - /// @dev Fetches information for all passed in orders and the makers/takers of each order. - /// @param orders Array of order specifications. - /// @param takerAddresses Array of taker addresses corresponding to each order. - /// @return Arrays of OrderInfo and TraderInfo instances that correspond to each order. - function getOrdersAndTradersInfo(LibOrder.Order[] memory orders, address[] memory takerAddresses) - public - view - returns (LibOrder.OrderInfo[] memory ordersInfo, TraderInfo[] memory tradersInfo) - { - ordersInfo = EXCHANGE.getOrdersInfo(orders); - tradersInfo = getTradersInfo(orders, takerAddresses); - return (ordersInfo, tradersInfo); - } - - /// @dev Fetches balance and allowances for maker and taker of order. - /// @param order The order structure. - /// @param takerAddress Address that will be filling the order. - /// @return Balances and allowances of maker and taker of order. - function getTraderInfo(LibOrder.Order memory order, address takerAddress) - public - view - returns (TraderInfo memory traderInfo) - { - (traderInfo.makerBalance, traderInfo.makerAllowance) = getBalanceAndAllowance(order.makerAddress, order.makerAssetData); - (traderInfo.takerBalance, traderInfo.takerAllowance) = getBalanceAndAllowance(takerAddress, order.takerAssetData); - bytes memory zrxAssetData = ZRX_ASSET_DATA; - (traderInfo.makerZrxBalance, traderInfo.makerZrxAllowance) = getBalanceAndAllowance(order.makerAddress, zrxAssetData); - (traderInfo.takerZrxBalance, traderInfo.takerZrxAllowance) = getBalanceAndAllowance(takerAddress, zrxAssetData); - return traderInfo; - } - - /// @dev Fetches balances and allowances of maker and taker for each provided order. - /// @param orders Array of order specifications. - /// @param takerAddresses Array of taker addresses corresponding to each order. - /// @return Array of balances and allowances for maker and taker of each order. - function getTradersInfo(LibOrder.Order[] memory orders, address[] memory takerAddresses) - public - view - returns (TraderInfo[] memory) - { - uint256 ordersLength = orders.length; - TraderInfo[] memory tradersInfo = new TraderInfo[](ordersLength); - for (uint256 i = 0; i != ordersLength; i++) { - tradersInfo[i] = getTraderInfo(orders[i], takerAddresses[i]); - } - return tradersInfo; - } - - /// @dev Fetches token balances and allowances of an address to given assetProxy. Supports ERC20 and ERC721. - /// @param target Address to fetch balances and allowances of. - /// @param assetData Encoded data that can be decoded by a specified proxy contract when transferring asset. - /// @return Balance of asset and allowance set to given proxy of asset. - /// For ERC721 tokens, these values will always be 1 or 0. - function getBalanceAndAllowance(address target, bytes memory assetData) - public - view - returns (uint256 balance, uint256 allowance) - { - bytes4 assetProxyId = assetData.readBytes4(0); - address token = assetData.readAddress(16); - address assetProxy = EXCHANGE.getAssetProxy(assetProxyId); - - if (assetProxyId == ERC20_DATA_ID) { - // Query balance - balance = IERC20Token(token).balanceOf(target); - - // Query allowance - allowance = IERC20Token(token).allowance(target, assetProxy); - } else if (assetProxyId == ERC721_DATA_ID) { - uint256 tokenId = assetData.readUint256(36); - - // Query owner of tokenId - address owner = getERC721TokenOwner(token, tokenId); - - // Set balance to 1 if tokenId is owned by target - balance = target == owner ? 1 : 0; - - // Check if ERC721Proxy is approved to spend tokenId - bool isApproved = IERC721Token(token).isApprovedForAll(target, assetProxy) || IERC721Token(token).getApproved(tokenId) == assetProxy; - - // Set alowance to 1 if ERC721Proxy is approved to spend tokenId - allowance = isApproved ? 1 : 0; - } else { - revert("UNSUPPORTED_ASSET_PROXY"); - } - return (balance, allowance); - } - - /// @dev Fetches token balances and allowances of an address for each given assetProxy. Supports ERC20 and ERC721. - /// @param target Address to fetch balances and allowances of. - /// @param assetData Array of encoded byte arrays that can be decoded by a specified proxy contract when transferring asset. - /// @return Balances and allowances of assets. - /// For ERC721 tokens, these values will always be 1 or 0. - function getBalancesAndAllowances(address target, bytes[] memory assetData) - public - view - returns (uint256[] memory, uint256[] memory) - { - uint256 length = assetData.length; - uint256[] memory balances = new uint256[](length); - uint256[] memory allowances = new uint256[](length); - for (uint256 i = 0; i != length; i++) { - (balances[i], allowances[i]) = getBalanceAndAllowance(target, assetData[i]); - } - return (balances, allowances); - } - - /// @dev Calls `token.ownerOf(tokenId)`, but returns a null owner instead of reverting on an unowned token. - /// @param token Address of ERC721 token. - /// @param tokenId The identifier for the specific NFT. - /// @return Owner of tokenId or null address if unowned. - function getERC721TokenOwner(address token, uint256 tokenId) - public - view - returns (address owner) - { - assembly { - // load free memory pointer - let cdStart := mload(64) - - // bytes4(keccak256(ownerOf(uint256))) = 0x6352211e - mstore(cdStart, 0x6352211e00000000000000000000000000000000000000000000000000000000) - mstore(add(cdStart, 4), tokenId) - - // staticcall `ownerOf(tokenId)` - // `ownerOf` will revert if tokenId is not owned - let success := staticcall( - gas, // forward all gas - token, // call token contract - cdStart, // start of calldata - 36, // length of input is 36 bytes - cdStart, // write output over input - 32 // size of output is 32 bytes - ) - - // Success implies that tokenId is owned - // Copy owner from return data if successful - if success { - owner := mload(cdStart) - } - } - - // Owner initialized to address(0), no need to modify if call is unsuccessful - return owner; - } -} diff --git a/packages/contracts/src/2.0.0/multisig/MultiSigWallet.sol b/packages/contracts/src/2.0.0/multisig/MultiSigWallet.sol deleted file mode 100644 index 516e7391c..000000000 --- a/packages/contracts/src/2.0.0/multisig/MultiSigWallet.sol +++ /dev/null @@ -1,393 +0,0 @@ -// solhint-disable -pragma solidity ^0.4.15; - - -/// @title Multisignature wallet - Allows multiple parties to agree on transactions before execution. -/// @author Stefan George - -contract MultiSigWallet { - - /* - * Events - */ - event Confirmation(address indexed sender, uint indexed transactionId); - event Revocation(address indexed sender, uint indexed transactionId); - event Submission(uint indexed transactionId); - event Execution(uint indexed transactionId); - event ExecutionFailure(uint indexed transactionId); - event Deposit(address indexed sender, uint value); - event OwnerAddition(address indexed owner); - event OwnerRemoval(address indexed owner); - event RequirementChange(uint required); - - /* - * Constants - */ - uint constant public MAX_OWNER_COUNT = 50; - - /* - * Storage - */ - mapping (uint => Transaction) public transactions; - mapping (uint => mapping (address => bool)) public confirmations; - mapping (address => bool) public isOwner; - address[] public owners; - uint public required; - uint public transactionCount; - - struct Transaction { - address destination; - uint value; - bytes data; - bool executed; - } - - /* - * Modifiers - */ - modifier onlyWallet() { - require(msg.sender == address(this)); - _; - } - - modifier ownerDoesNotExist(address owner) { - require(!isOwner[owner]); - _; - } - - modifier ownerExists(address owner) { - require(isOwner[owner]); - _; - } - - modifier transactionExists(uint transactionId) { - require(transactions[transactionId].destination != 0); - _; - } - - modifier confirmed(uint transactionId, address owner) { - require(confirmations[transactionId][owner]); - _; - } - - modifier notConfirmed(uint transactionId, address owner) { - require(!confirmations[transactionId][owner]); - _; - } - - modifier notExecuted(uint transactionId) { - require(!transactions[transactionId].executed); - _; - } - - modifier notNull(address _address) { - require(_address != 0); - _; - } - - modifier validRequirement(uint ownerCount, uint _required) { - require(ownerCount <= MAX_OWNER_COUNT - && _required <= ownerCount - && _required != 0 - && ownerCount != 0); - _; - } - - /// @dev Fallback function allows to deposit ether. - function() - payable - { - if (msg.value > 0) - Deposit(msg.sender, msg.value); - } - - /* - * Public functions - */ - /// @dev Contract constructor sets initial owners and required number of confirmations. - /// @param _owners List of initial owners. - /// @param _required Number of required confirmations. - function MultiSigWallet(address[] _owners, uint _required) - public - validRequirement(_owners.length, _required) - { - for (uint i=0; i<_owners.length; i++) { - require(!isOwner[_owners[i]] && _owners[i] != 0); - isOwner[_owners[i]] = true; - } - owners = _owners; - required = _required; - } - - /// @dev Allows to add a new owner. Transaction has to be sent by wallet. - /// @param owner Address of new owner. - function addOwner(address owner) - public - onlyWallet - ownerDoesNotExist(owner) - notNull(owner) - validRequirement(owners.length + 1, required) - { - isOwner[owner] = true; - owners.push(owner); - OwnerAddition(owner); - } - - /// @dev Allows to remove an owner. Transaction has to be sent by wallet. - /// @param owner Address of owner. - function removeOwner(address owner) - public - onlyWallet - ownerExists(owner) - { - isOwner[owner] = false; - for (uint i=0; i owners.length) - changeRequirement(owners.length); - OwnerRemoval(owner); - } - - /// @dev Allows to replace an owner with a new owner. Transaction has to be sent by wallet. - /// @param owner Address of owner to be replaced. - /// @param newOwner Address of new owner. - function replaceOwner(address owner, address newOwner) - public - onlyWallet - ownerExists(owner) - ownerDoesNotExist(newOwner) - { - for (uint i=0; i -// solhint-disable not-rely-on-time -contract MultiSigWalletWithTimeLock is - MultiSigWallet -{ - event ConfirmationTimeSet(uint256 indexed transactionId, uint256 confirmationTime); - event TimeLockChange(uint256 secondsTimeLocked); - - uint256 public secondsTimeLocked; - - mapping (uint256 => uint256) public confirmationTimes; - - modifier notFullyConfirmed(uint256 transactionId) { - require( - !isConfirmed(transactionId), - "TX_FULLY_CONFIRMED" - ); - _; - } - - modifier fullyConfirmed(uint256 transactionId) { - require( - isConfirmed(transactionId), - "TX_NOT_FULLY_CONFIRMED" - ); - _; - } - - modifier pastTimeLock(uint256 transactionId) { - require( - block.timestamp >= confirmationTimes[transactionId] + secondsTimeLocked, - "TIME_LOCK_INCOMPLETE" - ); - _; - } - - /// @dev Contract constructor sets initial owners, required number of confirmations, and time lock. - /// @param _owners List of initial owners. - /// @param _required Number of required confirmations. - /// @param _secondsTimeLocked Duration needed after a transaction is confirmed and before it becomes executable, in seconds. - constructor ( - address[] _owners, - uint256 _required, - uint256 _secondsTimeLocked - ) - public - MultiSigWallet(_owners, _required) - { - secondsTimeLocked = _secondsTimeLocked; - } - - /// @dev Changes the duration of the time lock for transactions. - /// @param _secondsTimeLocked Duration needed after a transaction is confirmed and before it becomes executable, in seconds. - function changeTimeLock(uint256 _secondsTimeLocked) - public - onlyWallet - { - secondsTimeLocked = _secondsTimeLocked; - emit TimeLockChange(_secondsTimeLocked); - } - - /// @dev Allows an owner to confirm a transaction. - /// @param transactionId Transaction ID. - function confirmTransaction(uint256 transactionId) - public - ownerExists(msg.sender) - transactionExists(transactionId) - notConfirmed(transactionId, msg.sender) - notFullyConfirmed(transactionId) - { - confirmations[transactionId][msg.sender] = true; - emit Confirmation(msg.sender, transactionId); - if (isConfirmed(transactionId)) { - setConfirmationTime(transactionId, block.timestamp); - } - } - - /// @dev Allows anyone to execute a confirmed transaction. - /// @param transactionId Transaction ID. - function executeTransaction(uint256 transactionId) - public - notExecuted(transactionId) - fullyConfirmed(transactionId) - pastTimeLock(transactionId) - { - Transaction storage txn = transactions[transactionId]; - txn.executed = true; - if (external_call(txn.destination, txn.value, txn.data.length, txn.data)) { - emit Execution(transactionId); - } else { - emit ExecutionFailure(transactionId); - txn.executed = false; - } - } - - /// @dev Sets the time of when a submission first passed. - function setConfirmationTime(uint256 transactionId, uint256 confirmationTime) - internal - { - confirmationTimes[transactionId] = confirmationTime; - emit ConfirmationTimeSet(transactionId, confirmationTime); - } -} diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol b/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol deleted file mode 100644 index 258443bca..000000000 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol +++ /dev/null @@ -1,184 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "./MixinAuthorizable.sol"; - - -contract ERC20Proxy is - MixinAuthorizable -{ - // Id of this proxy. - bytes4 constant internal PROXY_ID = bytes4(keccak256("ERC20Token(address)")); - - // solhint-disable-next-line payable-fallback - function () - external - { - assembly { - // The first 4 bytes of calldata holds the function selector - let selector := and(calldataload(0), 0xffffffff00000000000000000000000000000000000000000000000000000000) - - // `transferFrom` will be called with the following parameters: - // assetData Encoded byte array. - // from Address to transfer asset from. - // to Address to transfer asset to. - // amount Amount of asset to transfer. - // bytes4(keccak256("transferFrom(bytes,address,address,uint256)")) = 0xa85e59e4 - if eq(selector, 0xa85e59e400000000000000000000000000000000000000000000000000000000) { - - // To lookup a value in a mapping, we load from the storage location keccak256(k, p), - // where k is the key left padded to 32 bytes and p is the storage slot - let start := mload(64) - mstore(start, and(caller, 0xffffffffffffffffffffffffffffffffffffffff)) - mstore(add(start, 32), authorized_slot) - - // Revert if authorized[msg.sender] == false - if iszero(sload(keccak256(start, 64))) { - // Revert with `Error("SENDER_NOT_AUTHORIZED")` - mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000) - mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000) - mstore(64, 0x0000001553454e4445525f4e4f545f415554484f52495a454400000000000000) - mstore(96, 0) - revert(0, 100) - } - - // `transferFrom`. - // The function is marked `external`, so no abi decodeding is done for - // us. Instead, we expect the `calldata` memory to contain the - // following: - // - // | Area | Offset | Length | Contents | - // |----------|--------|---------|-------------------------------------| - // | Header | 0 | 4 | function selector | - // | Params | | 4 * 32 | function parameters: | - // | | 4 | | 1. offset to assetData (*) | - // | | 36 | | 2. from | - // | | 68 | | 3. to | - // | | 100 | | 4. amount | - // | Data | | | assetData: | - // | | 132 | 32 | assetData Length | - // | | 164 | ** | assetData Contents | - // - // (*): offset is computed from start of function parameters, so offset - // by an additional 4 bytes in the calldata. - // - // (**): see table below to compute length of assetData Contents - // - // WARNING: The ABIv2 specification allows additional padding between - // the Params and Data section. This will result in a larger - // offset to assetData. - - // Asset data itself is encoded as follows: - // - // | Area | Offset | Length | Contents | - // |----------|--------|---------|-------------------------------------| - // | Header | 0 | 4 | function selector | - // | Params | | 1 * 32 | function parameters: | - // | | 4 | 12 + 20 | 1. token address | - - // We construct calldata for the `token.transferFrom` ABI. - // The layout of this calldata is in the table below. - // - // | Area | Offset | Length | Contents | - // |----------|--------|---------|-------------------------------------| - // | Header | 0 | 4 | function selector | - // | Params | | 3 * 32 | function parameters: | - // | | 4 | | 1. from | - // | | 36 | | 2. to | - // | | 68 | | 3. amount | - - /////// Read token address from calldata /////// - // * The token address is stored in `assetData`. - // - // * The "offset to assetData" is stored at offset 4 in the calldata (table 1). - // [assetDataOffsetFromParams = calldataload(4)] - // - // * Notes that the "offset to assetData" is relative to the "Params" area of calldata; - // add 4 bytes to account for the length of the "Header" area (table 1). - // [assetDataOffsetFromHeader = assetDataOffsetFromParams + 4] - // - // * The "token address" is offset 32+4=36 bytes into "assetData" (tables 1 & 2). - // [tokenOffset = assetDataOffsetFromHeader + 36 = calldataload(4) + 4 + 36] - let token := calldataload(add(calldataload(4), 40)) - - /////// Setup Header Area /////// - // This area holds the 4-byte `transferFrom` selector. - // Any trailing data in transferFromSelector will be - // overwritten in the next `mstore` call. - mstore(0, 0x23b872dd00000000000000000000000000000000000000000000000000000000) - - /////// Setup Params Area /////// - // We copy the fields `from`, `to` and `amount` in bulk - // from our own calldata to the new calldata. - calldatacopy(4, 36, 96) - - /////// Call `token.transferFrom` using the calldata /////// - let success := call( - gas, // forward all gas - token, // call address of token contract - 0, // don't send any ETH - 0, // pointer to start of input - 100, // length of input - 0, // write output over input - 32 // output size should be 32 bytes - ) - - /////// Check return data. /////// - // If there is no return data, we assume the token incorrectly - // does not return a bool. In this case we expect it to revert - // on failure, which was handled above. - // If the token does return data, we require that it is a single - // nonzero 32 bytes value. - // So the transfer succeeded if the call succeeded and either - // returned nothing, or returned a non-zero 32 byte value. - success := and(success, or( - iszero(returndatasize), - and( - eq(returndatasize, 32), - gt(mload(0), 0) - ) - )) - if success { - return(0, 0) - } - - // Revert with `Error("TRANSFER_FAILED")` - mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000) - mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000) - mstore(64, 0x0000000f5452414e534645525f4641494c454400000000000000000000000000) - mstore(96, 0) - revert(0, 100) - } - - // Revert if undefined function is called - revert(0, 0) - } - } - - /// @dev Gets the proxy id associated with the proxy address. - /// @return Proxy id. - function getProxyId() - external - pure - returns (bytes4) - { - return PROXY_ID; - } -} diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol b/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol deleted file mode 100644 index 65b664b8b..000000000 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol +++ /dev/null @@ -1,171 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "./MixinAuthorizable.sol"; - - -contract ERC721Proxy is - MixinAuthorizable -{ - // Id of this proxy. - bytes4 constant internal PROXY_ID = bytes4(keccak256("ERC721Token(address,uint256)")); - - // solhint-disable-next-line payable-fallback - function () - external - { - assembly { - // The first 4 bytes of calldata holds the function selector - let selector := and(calldataload(0), 0xffffffff00000000000000000000000000000000000000000000000000000000) - - // `transferFrom` will be called with the following parameters: - // assetData Encoded byte array. - // from Address to transfer asset from. - // to Address to transfer asset to. - // amount Amount of asset to transfer. - // bytes4(keccak256("transferFrom(bytes,address,address,uint256)")) = 0xa85e59e4 - if eq(selector, 0xa85e59e400000000000000000000000000000000000000000000000000000000) { - - // To lookup a value in a mapping, we load from the storage location keccak256(k, p), - // where k is the key left padded to 32 bytes and p is the storage slot - let start := mload(64) - mstore(start, and(caller, 0xffffffffffffffffffffffffffffffffffffffff)) - mstore(add(start, 32), authorized_slot) - - // Revert if authorized[msg.sender] == false - if iszero(sload(keccak256(start, 64))) { - // Revert with `Error("SENDER_NOT_AUTHORIZED")` - mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000) - mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000) - mstore(64, 0x0000001553454e4445525f4e4f545f415554484f52495a454400000000000000) - mstore(96, 0) - revert(0, 100) - } - - // `transferFrom`. - // The function is marked `external`, so no abi decodeding is done for - // us. Instead, we expect the `calldata` memory to contain the - // following: - // - // | Area | Offset | Length | Contents | - // |----------|--------|---------|-------------------------------------| - // | Header | 0 | 4 | function selector | - // | Params | | 4 * 32 | function parameters: | - // | | 4 | | 1. offset to assetData (*) | - // | | 36 | | 2. from | - // | | 68 | | 3. to | - // | | 100 | | 4. amount | - // | Data | | | assetData: | - // | | 132 | 32 | assetData Length | - // | | 164 | ** | assetData Contents | - // - // (*): offset is computed from start of function parameters, so offset - // by an additional 4 bytes in the calldata. - // - // (**): see table below to compute length of assetData Contents - // - // WARNING: The ABIv2 specification allows additional padding between - // the Params and Data section. This will result in a larger - // offset to assetData. - - // Asset data itself is encoded as follows: - // - // | Area | Offset | Length | Contents | - // |----------|--------|---------|-------------------------------------| - // | Header | 0 | 4 | function selector | - // | Params | | 2 * 32 | function parameters: | - // | | 4 | 12 + 20 | 1. token address | - // | | 36 | | 2. tokenId | - - // We construct calldata for the `token.transferFrom` ABI. - // The layout of this calldata is in the table below. - // - // | Area | Offset | Length | Contents | - // |----------|--------|---------|-------------------------------------| - // | Header | 0 | 4 | function selector | - // | Params | | 3 * 32 | function parameters: | - // | | 4 | | 1. from | - // | | 36 | | 2. to | - // | | 68 | | 3. tokenId | - - // There exists only 1 of each token. - // require(amount == 1, "INVALID_AMOUNT") - if sub(calldataload(100), 1) { - // Revert with `Error("INVALID_AMOUNT")` - mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000) - mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000) - mstore(64, 0x0000000e494e56414c49445f414d4f554e540000000000000000000000000000) - mstore(96, 0) - revert(0, 100) - } - - /////// Setup Header Area /////// - // This area holds the 4-byte `transferFrom` selector. - // Any trailing data in transferFromSelector will be - // overwritten in the next `mstore` call. - mstore(0, 0x23b872dd00000000000000000000000000000000000000000000000000000000) - - /////// Setup Params Area /////// - // We copy the fields `from` and `to` in bulk - // from our own calldata to the new calldata. - calldatacopy(4, 36, 64) - - // Copy `tokenId` field from our own calldata to the new calldata. - let assetDataOffset := calldataload(4) - calldatacopy(68, add(assetDataOffset, 72), 32) - - /////// Call `token.transferFrom` using the calldata /////// - let token := calldataload(add(assetDataOffset, 40)) - let success := call( - gas, // forward all gas - token, // call address of token contract - 0, // don't send any ETH - 0, // pointer to start of input - 100, // length of input - 0, // write output to null - 0 // output size is 0 bytes - ) - if success { - return(0, 0) - } - - // Revert with `Error("TRANSFER_FAILED")` - mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000) - mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000) - mstore(64, 0x0000000f5452414e534645525f4641494c454400000000000000000000000000) - mstore(96, 0) - revert(0, 100) - } - - // Revert if undefined function is called - revert(0, 0) - } - } - - /// @dev Gets the proxy id associated with the proxy address. - /// @return Proxy id. - function getProxyId() - external - pure - returns (bytes4) - { - return PROXY_ID; - } -} diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxy/MixinAuthorizable.sol b/packages/contracts/src/2.0.0/protocol/AssetProxy/MixinAuthorizable.sol deleted file mode 100644 index fe9bbf848..000000000 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/MixinAuthorizable.sol +++ /dev/null @@ -1,117 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../utils/Ownable/Ownable.sol"; -import "./mixins/MAuthorizable.sol"; - - -contract MixinAuthorizable is - Ownable, - MAuthorizable -{ - /// @dev Only authorized addresses can invoke functions with this modifier. - modifier onlyAuthorized { - require( - authorized[msg.sender], - "SENDER_NOT_AUTHORIZED" - ); - _; - } - - mapping (address => bool) public authorized; - address[] public authorities; - - /// @dev Authorizes an address. - /// @param target Address to authorize. - function addAuthorizedAddress(address target) - external - onlyOwner - { - require( - !authorized[target], - "TARGET_ALREADY_AUTHORIZED" - ); - - authorized[target] = true; - authorities.push(target); - emit AuthorizedAddressAdded(target, msg.sender); - } - - /// @dev Removes authorizion of an address. - /// @param target Address to remove authorization from. - function removeAuthorizedAddress(address target) - external - onlyOwner - { - require( - authorized[target], - "TARGET_NOT_AUTHORIZED" - ); - - delete authorized[target]; - for (uint256 i = 0; i < authorities.length; i++) { - if (authorities[i] == target) { - authorities[i] = authorities[authorities.length - 1]; - authorities.length -= 1; - break; - } - } - emit AuthorizedAddressRemoved(target, msg.sender); - } - - /// @dev Removes authorizion of an address. - /// @param target Address to remove authorization from. - /// @param index Index of target in authorities array. - function removeAuthorizedAddressAtIndex( - address target, - uint256 index - ) - external - onlyOwner - { - require( - authorized[target], - "TARGET_NOT_AUTHORIZED" - ); - require( - index < authorities.length, - "INDEX_OUT_OF_BOUNDS" - ); - require( - authorities[index] == target, - "AUTHORIZED_ADDRESS_MISMATCH" - ); - - delete authorized[target]; - authorities[index] = authorities[authorities.length - 1]; - authorities.length -= 1; - emit AuthorizedAddressRemoved(target, msg.sender); - } - - /// @dev Gets all authorized addresses. - /// @return Array of authorized addresses. - function getAuthorizedAddresses() - external - view - returns (address[] memory) - { - return authorities; - } -} diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAssetData.sol b/packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAssetData.sol deleted file mode 100644 index 3e76e38dd..000000000 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAssetData.sol +++ /dev/null @@ -1,40 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -// solhint-disable -pragma solidity 0.4.24; - - -// @dev Interface of the asset proxy's assetData. -// The asset proxies take an ABI encoded `bytes assetData` as argument. -// This argument is ABI encoded as one of the methods of this interface. -interface IAssetData { - - function ERC20Token(address tokenContract) - external - pure; - - function ERC721Token( - address tokenContract, - uint256 tokenId, - bytes receiverData - ) - external - pure; - -} diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAssetProxy.sol b/packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAssetProxy.sol deleted file mode 100644 index b25d2d75a..000000000 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAssetProxy.sol +++ /dev/null @@ -1,46 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "./IAuthorizable.sol"; - - -contract IAssetProxy is - IAuthorizable -{ - /// @dev Transfers assets. Either succeeds or throws. - /// @param assetData Byte array encoded for the respective asset proxy. - /// @param from Address to transfer asset from. - /// @param to Address to transfer asset to. - /// @param amount Amount of asset to transfer. - function transferFrom( - bytes assetData, - address from, - address to, - uint256 amount - ) - external; - - /// @dev Gets the proxy id associated with the proxy address. - /// @return Proxy id. - function getProxyId() - external - pure - returns (bytes4); -} diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAuthorizable.sol b/packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAuthorizable.sol deleted file mode 100644 index ba1d4aa77..000000000 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAuthorizable.sol +++ /dev/null @@ -1,52 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../../utils/Ownable/IOwnable.sol"; - - -contract IAuthorizable is - IOwnable -{ - /// @dev Authorizes an address. - /// @param target Address to authorize. - function addAuthorizedAddress(address target) - external; - - /// @dev Removes authorizion of an address. - /// @param target Address to remove authorization from. - function removeAuthorizedAddress(address target) - external; - - /// @dev Removes authorizion of an address. - /// @param target Address to remove authorization from. - /// @param index Index of target in authorities array. - function removeAuthorizedAddressAtIndex( - address target, - uint256 index - ) - external; - - /// @dev Gets all authorized addresses. - /// @return Array of authorized addresses. - function getAuthorizedAddresses() - external - view - returns (address[] memory); -} diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxy/libs/LibAssetProxyErrors.sol b/packages/contracts/src/2.0.0/protocol/AssetProxy/libs/LibAssetProxyErrors.sol deleted file mode 100644 index 1d9a70cc1..000000000 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/libs/LibAssetProxyErrors.sol +++ /dev/null @@ -1,38 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -// solhint-disable -pragma solidity 0.4.24; - - -/// @dev This contract documents the revert reasons used in the AssetProxy contracts. -/// This contract is intended to serve as a reference, but is not actually used for efficiency reasons. -contract LibAssetProxyErrors { - - /// Authorizable errors /// - string constant SENDER_NOT_AUTHORIZED = "SENDER_NOT_AUTHORIZED"; // Sender not authorized to call this method. - string constant TARGET_NOT_AUTHORIZED = "TARGET_NOT_AUTHORIZED"; // Target address not authorized to call this method. - string constant TARGET_ALREADY_AUTHORIZED = "TARGET_ALREADY_AUTHORIZED"; // Target address must not already be authorized. - string constant INDEX_OUT_OF_BOUNDS = "INDEX_OUT_OF_BOUNDS"; // Specified array index is out of bounds. - string constant AUTHORIZED_ADDRESS_MISMATCH = "AUTHORIZED_ADDRESS_MISMATCH"; // Address at index does not match given target address. - - /// Transfer errors /// - string constant INVALID_AMOUNT = "INVALID_AMOUNT"; // Transfer amount must equal 1. - string constant TRANSFER_FAILED = "TRANSFER_FAILED"; // Transfer failed. - string constant LENGTH_GREATER_THAN_131_REQUIRED = "LENGTH_GREATER_THAN_131_REQUIRED"; // Byte array must have a length greater than 0. -} diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxy/mixins/MAuthorizable.sol b/packages/contracts/src/2.0.0/protocol/AssetProxy/mixins/MAuthorizable.sol deleted file mode 100644 index d63fb7f6d..000000000 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/mixins/MAuthorizable.sol +++ /dev/null @@ -1,41 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../interfaces/IAuthorizable.sol"; - - -contract MAuthorizable is - IAuthorizable -{ - // Event logged when a new address is authorized. - event AuthorizedAddressAdded( - address indexed target, - address indexed caller - ); - - // Event logged when a currently authorized address is unauthorized. - event AuthorizedAddressRemoved( - address indexed target, - address indexed caller - ); - - /// @dev Only authorized addresses can invoke functions with this modifier. - modifier onlyAuthorized { revert(); _; } -} diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol b/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol deleted file mode 100644 index edb788fab..000000000 --- a/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol +++ /dev/null @@ -1,108 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../multisig/MultiSigWalletWithTimeLock.sol"; -import "../../utils/LibBytes/LibBytes.sol"; - - -contract AssetProxyOwner is - MultiSigWalletWithTimeLock -{ - using LibBytes for bytes; - - event AssetProxyRegistration(address assetProxyContract, bool isRegistered); - - // Mapping of AssetProxy contract address => - // if this contract is allowed to call the AssetProxy's `removeAuthorizedAddressAtIndex` method without a time lock. - mapping (address => bool) public isAssetProxyRegistered; - - bytes4 constant internal REMOVE_AUTHORIZED_ADDRESS_AT_INDEX_SELECTOR = bytes4(keccak256("removeAuthorizedAddressAtIndex(address,uint256)")); - - /// @dev Function will revert if the transaction does not call `removeAuthorizedAddressAtIndex` - /// on an approved AssetProxy contract. - modifier validRemoveAuthorizedAddressAtIndexTx(uint256 transactionId) { - Transaction storage txn = transactions[transactionId]; - require( - isAssetProxyRegistered[txn.destination], - "UNREGISTERED_ASSET_PROXY" - ); - require( - txn.data.readBytes4(0) == REMOVE_AUTHORIZED_ADDRESS_AT_INDEX_SELECTOR, - "INVALID_FUNCTION_SELECTOR" - ); - _; - } - - /// @dev Contract constructor sets initial owners, required number of confirmations, - /// time lock, and list of AssetProxy addresses. - /// @param _owners List of initial owners. - /// @param _assetProxyContracts Array of AssetProxy contract addresses. - /// @param _required Number of required confirmations. - /// @param _secondsTimeLocked Duration needed after a transaction is confirmed and before it becomes executable, in seconds. - constructor ( - address[] memory _owners, - address[] memory _assetProxyContracts, - uint256 _required, - uint256 _secondsTimeLocked - ) - public - MultiSigWalletWithTimeLock(_owners, _required, _secondsTimeLocked) - { - for (uint256 i = 0; i < _assetProxyContracts.length; i++) { - address assetProxy = _assetProxyContracts[i]; - require( - assetProxy != address(0), - "INVALID_ASSET_PROXY" - ); - isAssetProxyRegistered[assetProxy] = true; - } - } - - /// @dev Registers or deregisters an AssetProxy to be able to execute - /// `removeAuthorizedAddressAtIndex` without a timelock. - /// @param assetProxyContract Address of AssetProxy contract. - /// @param isRegistered Status of approval for AssetProxy contract. - function registerAssetProxy(address assetProxyContract, bool isRegistered) - public - onlyWallet - notNull(assetProxyContract) - { - isAssetProxyRegistered[assetProxyContract] = isRegistered; - emit AssetProxyRegistration(assetProxyContract, isRegistered); - } - - /// @dev Allows execution of `removeAuthorizedAddressAtIndex` without time lock. - /// @param transactionId Transaction ID. - function executeRemoveAuthorizedAddressAtIndex(uint256 transactionId) - public - notExecuted(transactionId) - fullyConfirmed(transactionId) - validRemoveAuthorizedAddressAtIndexTx(transactionId) - { - Transaction storage txn = transactions[transactionId]; - txn.executed = true; - if (external_call(txn.destination, txn.value, txn.data.length, txn.data)) { - emit Execution(transactionId); - } else { - emit ExecutionFailure(transactionId); - txn.executed = false; - } - } -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/Exchange.sol b/packages/contracts/src/2.0.0/protocol/Exchange/Exchange.sol deleted file mode 100644 index ead36009f..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/Exchange.sol +++ /dev/null @@ -1,53 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "./libs/LibConstants.sol"; -import "./MixinExchangeCore.sol"; -import "./MixinSignatureValidator.sol"; -import "./MixinWrapperFunctions.sol"; -import "./MixinAssetProxyDispatcher.sol"; -import "./MixinTransactions.sol"; -import "./MixinMatchOrders.sol"; - - -// solhint-disable no-empty-blocks -contract Exchange is - MixinExchangeCore, - MixinMatchOrders, - MixinSignatureValidator, - MixinTransactions, - MixinAssetProxyDispatcher, - MixinWrapperFunctions -{ - string constant public VERSION = "2.0.1-alpha"; - - // Mixins are instantiated in the order they are inherited - constructor (bytes memory _zrxAssetData) - public - LibConstants(_zrxAssetData) // @TODO: Remove when we deploy. - MixinExchangeCore() - MixinMatchOrders() - MixinSignatureValidator() - MixinTransactions() - MixinAssetProxyDispatcher() - MixinWrapperFunctions() - {} -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol deleted file mode 100644 index 87b09b6b3..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol +++ /dev/null @@ -1,174 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../utils/Ownable/Ownable.sol"; -import "./mixins/MAssetProxyDispatcher.sol"; -import "../AssetProxy/interfaces/IAssetProxy.sol"; - - -contract MixinAssetProxyDispatcher is - Ownable, - MAssetProxyDispatcher -{ - // Mapping from Asset Proxy Id's to their respective Asset Proxy - mapping (bytes4 => IAssetProxy) public assetProxies; - - /// @dev Registers an asset proxy to its asset proxy id. - /// Once an asset proxy is registered, it cannot be unregistered. - /// @param assetProxy Address of new asset proxy to register. - function registerAssetProxy(address assetProxy) - external - onlyOwner - { - IAssetProxy assetProxyContract = IAssetProxy(assetProxy); - - // Ensure that no asset proxy exists with current id. - bytes4 assetProxyId = assetProxyContract.getProxyId(); - address currentAssetProxy = assetProxies[assetProxyId]; - require( - currentAssetProxy == address(0), - "ASSET_PROXY_ALREADY_EXISTS" - ); - - // Add asset proxy and log registration. - assetProxies[assetProxyId] = assetProxyContract; - emit AssetProxyRegistered( - assetProxyId, - assetProxy - ); - } - - /// @dev Gets an asset proxy. - /// @param assetProxyId Id of the asset proxy. - /// @return The asset proxy registered to assetProxyId. Returns 0x0 if no proxy is registered. - function getAssetProxy(bytes4 assetProxyId) - external - view - returns (address) - { - return assetProxies[assetProxyId]; - } - - /// @dev Forwards arguments to assetProxy and calls `transferFrom`. Either succeeds or throws. - /// @param assetData Byte array encoded for the asset. - /// @param from Address to transfer token from. - /// @param to Address to transfer token to. - /// @param amount Amount of token to transfer. - function dispatchTransferFrom( - bytes memory assetData, - address from, - address to, - uint256 amount - ) - internal - { - // Do nothing if no amount should be transferred. - if (amount > 0 && from != to) { - // Ensure assetData length is valid - require( - assetData.length > 3, - "LENGTH_GREATER_THAN_3_REQUIRED" - ); - - // Lookup assetProxy. We do not use `LibBytes.readBytes4` for gas efficiency reasons. - bytes4 assetProxyId; - assembly { - assetProxyId := and(mload( - add(assetData, 32)), - 0xFFFFFFFF00000000000000000000000000000000000000000000000000000000 - ) - } - address assetProxy = assetProxies[assetProxyId]; - - // Ensure that assetProxy exists - require( - assetProxy != address(0), - "ASSET_PROXY_DOES_NOT_EXIST" - ); - - // We construct calldata for the `assetProxy.transferFrom` ABI. - // The layout of this calldata is in the table below. - // - // | Area | Offset | Length | Contents | - // | -------- |--------|---------|-------------------------------------------- | - // | Header | 0 | 4 | function selector | - // | Params | | 4 * 32 | function parameters: | - // | | 4 | | 1. offset to assetData (*) | - // | | 36 | | 2. from | - // | | 68 | | 3. to | - // | | 100 | | 4. amount | - // | Data | | | assetData: | - // | | 132 | 32 | assetData Length | - // | | 164 | ** | assetData Contents | - - assembly { - /////// Setup State /////// - // `cdStart` is the start of the calldata for `assetProxy.transferFrom` (equal to free memory ptr). - let cdStart := mload(64) - // `dataAreaLength` is the total number of words needed to store `assetData` - // As-per the ABI spec, this value is padded up to the nearest multiple of 32, - // and includes 32-bytes for length. - let dataAreaLength := and(add(mload(assetData), 63), 0xFFFFFFFFFFFE0) - // `cdEnd` is the end of the calldata for `assetProxy.transferFrom`. - let cdEnd := add(cdStart, add(132, dataAreaLength)) - - - /////// Setup Header Area /////// - // This area holds the 4-byte `transferFromSelector`. - // bytes4(keccak256("transferFrom(bytes,address,address,uint256)")) = 0xa85e59e4 - mstore(cdStart, 0xa85e59e400000000000000000000000000000000000000000000000000000000) - - /////// Setup Params Area /////// - // Each parameter is padded to 32-bytes. The entire Params Area is 128 bytes. - // Notes: - // 1. The offset to `assetData` is the length of the Params Area (128 bytes). - // 2. A 20-byte mask is applied to addresses to zero-out the unused bytes. - mstore(add(cdStart, 4), 128) - mstore(add(cdStart, 36), and(from, 0xffffffffffffffffffffffffffffffffffffffff)) - mstore(add(cdStart, 68), and(to, 0xffffffffffffffffffffffffffffffffffffffff)) - mstore(add(cdStart, 100), amount) - - /////// Setup Data Area /////// - // This area holds `assetData`. - let dataArea := add(cdStart, 132) - // solhint-disable-next-line no-empty-blocks - for {} lt(dataArea, cdEnd) {} { - mstore(dataArea, mload(assetData)) - dataArea := add(dataArea, 32) - assetData := add(assetData, 32) - } - - /////// Call `assetProxy.transferFrom` using the constructed calldata /////// - let success := call( - gas, // forward all gas - assetProxy, // call address of asset proxy - 0, // don't send any ETH - cdStart, // pointer to start of input - sub(cdEnd, cdStart), // length of input - cdStart, // write output over input - 512 // reserve 512 bytes for output - ) - if iszero(success) { - revert(cdStart, returndatasize()) - } - } - } - } -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol deleted file mode 100644 index 736dcd0b1..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ /dev/null @@ -1,529 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "../../utils/ReentrancyGuard/ReentrancyGuard.sol"; -import "./libs/LibConstants.sol"; -import "./libs/LibFillResults.sol"; -import "./libs/LibOrder.sol"; -import "./libs/LibMath.sol"; -import "./mixins/MExchangeCore.sol"; -import "./mixins/MSignatureValidator.sol"; -import "./mixins/MTransactions.sol"; -import "./mixins/MAssetProxyDispatcher.sol"; - - -contract MixinExchangeCore is - ReentrancyGuard, - LibConstants, - LibMath, - LibOrder, - LibFillResults, - MAssetProxyDispatcher, - MExchangeCore, - MSignatureValidator, - MTransactions -{ - // Mapping of orderHash => amount of takerAsset already bought by maker - mapping (bytes32 => uint256) public filled; - - // Mapping of orderHash => cancelled - mapping (bytes32 => bool) public cancelled; - - // Mapping of makerAddress => senderAddress => lowest salt an order can have in order to be fillable - // Orders with specified senderAddress and with a salt less than their epoch are considered cancelled - mapping (address => mapping (address => uint256)) public orderEpoch; - - /// @dev Cancels all orders created by makerAddress with a salt less than or equal to the targetOrderEpoch - /// and senderAddress equal to msg.sender (or null address if msg.sender == makerAddress). - /// @param targetOrderEpoch Orders created with a salt less or equal to this value will be cancelled. - function cancelOrdersUpTo(uint256 targetOrderEpoch) - external - nonReentrant - { - address makerAddress = getCurrentContextAddress(); - // If this function is called via `executeTransaction`, we only update the orderEpoch for the makerAddress/msg.sender combination. - // This allows external filter contracts to add rules to how orders are cancelled via this function. - address senderAddress = makerAddress == msg.sender ? address(0) : msg.sender; - - // orderEpoch is initialized to 0, so to cancelUpTo we need salt + 1 - uint256 newOrderEpoch = targetOrderEpoch + 1; - uint256 oldOrderEpoch = orderEpoch[makerAddress][senderAddress]; - - // Ensure orderEpoch is monotonically increasing - require( - newOrderEpoch > oldOrderEpoch, - "INVALID_NEW_ORDER_EPOCH" - ); - - // Update orderEpoch - orderEpoch[makerAddress][senderAddress] = newOrderEpoch; - emit CancelUpTo( - makerAddress, - senderAddress, - newOrderEpoch - ); - } - - /// @dev Fills the input order. - /// @param order Order struct containing order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param signature Proof that order has been created by maker. - /// @return Amounts filled and fees paid by maker and taker. - function fillOrder( - Order memory order, - uint256 takerAssetFillAmount, - bytes memory signature - ) - public - nonReentrant - returns (FillResults memory fillResults) - { - fillResults = fillOrderInternal( - order, - takerAssetFillAmount, - signature - ); - return fillResults; - } - - /// @dev After calling, the order can not be filled anymore. - /// Throws if order is invalid or sender does not have permission to cancel. - /// @param order Order to cancel. Order must be OrderStatus.FILLABLE. - function cancelOrder(Order memory order) - public - nonReentrant - { - cancelOrderInternal(order); - } - - /// @dev Gets information about an order: status, hash, and amount filled. - /// @param order Order to gather information on. - /// @return OrderInfo Information about the order and its state. - /// See LibOrder.OrderInfo for a complete description. - function getOrderInfo(Order memory order) - public - view - returns (OrderInfo memory orderInfo) - { - // Compute the order hash - orderInfo.orderHash = getOrderHash(order); - - // Fetch filled amount - orderInfo.orderTakerAssetFilledAmount = filled[orderInfo.orderHash]; - - // If order.makerAssetAmount is zero, we also reject the order. - // While the Exchange contract handles them correctly, they create - // edge cases in the supporting infrastructure because they have - // an 'infinite' price when computed by a simple division. - if (order.makerAssetAmount == 0) { - orderInfo.orderStatus = uint8(OrderStatus.INVALID_MAKER_ASSET_AMOUNT); - return orderInfo; - } - - // If order.takerAssetAmount is zero, then the order will always - // be considered filled because 0 == takerAssetAmount == orderTakerAssetFilledAmount - // Instead of distinguishing between unfilled and filled zero taker - // amount orders, we choose not to support them. - if (order.takerAssetAmount == 0) { - orderInfo.orderStatus = uint8(OrderStatus.INVALID_TAKER_ASSET_AMOUNT); - return orderInfo; - } - - // Validate order availability - if (orderInfo.orderTakerAssetFilledAmount >= order.takerAssetAmount) { - orderInfo.orderStatus = uint8(OrderStatus.FULLY_FILLED); - return orderInfo; - } - - // Validate order expiration - // solhint-disable-next-line not-rely-on-time - if (block.timestamp >= order.expirationTimeSeconds) { - orderInfo.orderStatus = uint8(OrderStatus.EXPIRED); - return orderInfo; - } - - // Check if order has been cancelled - if (cancelled[orderInfo.orderHash]) { - orderInfo.orderStatus = uint8(OrderStatus.CANCELLED); - return orderInfo; - } - if (orderEpoch[order.makerAddress][order.senderAddress] > order.salt) { - orderInfo.orderStatus = uint8(OrderStatus.CANCELLED); - return orderInfo; - } - - // All other statuses are ruled out: order is Fillable - orderInfo.orderStatus = uint8(OrderStatus.FILLABLE); - return orderInfo; - } - - /// @dev Fills the input order. - /// @param order Order struct containing order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param signature Proof that order has been created by maker. - /// @return Amounts filled and fees paid by maker and taker. - function fillOrderInternal( - Order memory order, - uint256 takerAssetFillAmount, - bytes memory signature - ) - internal - returns (FillResults memory fillResults) - { - // Fetch order info - OrderInfo memory orderInfo = getOrderInfo(order); - - // Fetch taker address - address takerAddress = getCurrentContextAddress(); - - // Assert that the order is fillable by taker - assertFillableOrder( - order, - orderInfo, - takerAddress, - signature - ); - - // Get amount of takerAsset to fill - uint256 remainingTakerAssetAmount = safeSub(order.takerAssetAmount, orderInfo.orderTakerAssetFilledAmount); - uint256 takerAssetFilledAmount = min256(takerAssetFillAmount, remainingTakerAssetAmount); - - // Validate context - assertValidFill( - order, - orderInfo, - takerAssetFillAmount, - takerAssetFilledAmount, - fillResults.makerAssetFilledAmount - ); - - // Compute proportional fill amounts - fillResults = calculateFillResults(order, takerAssetFilledAmount); - - // Update exchange internal state - updateFilledState( - order, - takerAddress, - orderInfo.orderHash, - orderInfo.orderTakerAssetFilledAmount, - fillResults - ); - - // Settle order - settleOrder( - order, - takerAddress, - fillResults - ); - - return fillResults; - } - - /// @dev After calling, the order can not be filled anymore. - /// Throws if order is invalid or sender does not have permission to cancel. - /// @param order Order to cancel. Order must be OrderStatus.FILLABLE. - function cancelOrderInternal(Order memory order) - internal - { - // Fetch current order status - OrderInfo memory orderInfo = getOrderInfo(order); - - // Validate context - assertValidCancel(order, orderInfo); - - // Perform cancel - updateCancelledState(order, orderInfo.orderHash); - } - - /// @dev Updates state with results of a fill order. - /// @param order that was filled. - /// @param takerAddress Address of taker who filled the order. - /// @param orderTakerAssetFilledAmount Amount of order already filled. - function updateFilledState( - Order memory order, - address takerAddress, - bytes32 orderHash, - uint256 orderTakerAssetFilledAmount, - FillResults memory fillResults - ) - internal - { - // Update state - filled[orderHash] = safeAdd(orderTakerAssetFilledAmount, fillResults.takerAssetFilledAmount); - - // Log order - emit Fill( - order.makerAddress, - order.feeRecipientAddress, - takerAddress, - msg.sender, - fillResults.makerAssetFilledAmount, - fillResults.takerAssetFilledAmount, - fillResults.makerFeePaid, - fillResults.takerFeePaid, - orderHash, - order.makerAssetData, - order.takerAssetData - ); - } - - /// @dev Updates state with results of cancelling an order. - /// State is only updated if the order is currently fillable. - /// Otherwise, updating state would have no effect. - /// @param order that was cancelled. - /// @param orderHash Hash of order that was cancelled. - function updateCancelledState( - Order memory order, - bytes32 orderHash - ) - internal - { - // Perform cancel - cancelled[orderHash] = true; - - // Log cancel - emit Cancel( - order.makerAddress, - order.feeRecipientAddress, - msg.sender, - orderHash, - order.makerAssetData, - order.takerAssetData - ); - } - - /// @dev Validates context for fillOrder. Succeeds or throws. - /// @param order to be filled. - /// @param orderInfo OrderStatus, orderHash, and amount already filled of order. - /// @param takerAddress Address of order taker. - /// @param signature Proof that the orders was created by its maker. - function assertFillableOrder( - Order memory order, - OrderInfo memory orderInfo, - address takerAddress, - bytes memory signature - ) - internal - view - { - // An order can only be filled if its status is FILLABLE. - require( - orderInfo.orderStatus == uint8(OrderStatus.FILLABLE), - "ORDER_UNFILLABLE" - ); - - // Validate sender is allowed to fill this order - if (order.senderAddress != address(0)) { - require( - order.senderAddress == msg.sender, - "INVALID_SENDER" - ); - } - - // Validate taker is allowed to fill this order - if (order.takerAddress != address(0)) { - require( - order.takerAddress == takerAddress, - "INVALID_TAKER" - ); - } - - // Validate Maker signature (check only if first time seen) - if (orderInfo.orderTakerAssetFilledAmount == 0) { - require( - isValidSignature( - orderInfo.orderHash, - order.makerAddress, - signature - ), - "INVALID_ORDER_SIGNATURE" - ); - } - } - - /// @dev Validates context for fillOrder. Succeeds or throws. - /// @param order to be filled. - /// @param orderInfo OrderStatus, orderHash, and amount already filled of order. - /// @param takerAssetFillAmount Desired amount of order to fill by taker. - /// @param takerAssetFilledAmount Amount of takerAsset that will be filled. - /// @param makerAssetFilledAmount Amount of makerAsset that will be transfered. - function assertValidFill( - Order memory order, - OrderInfo memory orderInfo, - uint256 takerAssetFillAmount, // TODO: use FillResults - uint256 takerAssetFilledAmount, - uint256 makerAssetFilledAmount - ) - internal - view - { - // Revert if fill amount is invalid - // TODO: reconsider necessity for v2.1 - require( - takerAssetFillAmount != 0, - "INVALID_TAKER_AMOUNT" - ); - - // Make sure taker does not pay more than desired amount - // NOTE: This assertion should never fail, it is here - // as an extra defence against potential bugs. - require( - takerAssetFilledAmount <= takerAssetFillAmount, - "TAKER_OVERPAY" - ); - - // Make sure order is not overfilled - // NOTE: This assertion should never fail, it is here - // as an extra defence against potential bugs. - require( - safeAdd(orderInfo.orderTakerAssetFilledAmount, takerAssetFilledAmount) <= order.takerAssetAmount, - "ORDER_OVERFILL" - ); - - // Make sure order is filled at acceptable price. - // The order has an implied price from the makers perspective: - // order price = order.makerAssetAmount / order.takerAssetAmount - // i.e. the number of makerAsset maker is paying per takerAsset. The - // maker is guaranteed to get this price or a better (lower) one. The - // actual price maker is getting in this fill is: - // fill price = makerAssetFilledAmount / takerAssetFilledAmount - // We need `fill price <= order price` for the fill to be fair to maker. - // This amounts to: - // makerAssetFilledAmount order.makerAssetAmount - // ------------------------ <= ----------------------- - // takerAssetFilledAmount order.takerAssetAmount - // or, equivalently: - // makerAssetFilledAmount * order.takerAssetAmount <= - // order.makerAssetAmount * takerAssetFilledAmount - // NOTE: This assertion should never fail, it is here - // as an extra defence against potential bugs. - require( - safeMul(makerAssetFilledAmount, order.takerAssetAmount) - <= - safeMul(order.makerAssetAmount, takerAssetFilledAmount), - "INVALID_FILL_PRICE" - ); - } - - /// @dev Validates context for cancelOrder. Succeeds or throws. - /// @param order to be cancelled. - /// @param orderInfo OrderStatus, orderHash, and amount already filled of order. - function assertValidCancel( - Order memory order, - OrderInfo memory orderInfo - ) - internal - view - { - // Ensure order is valid - // An order can only be cancelled if its status is FILLABLE. - require( - orderInfo.orderStatus == uint8(OrderStatus.FILLABLE), - "ORDER_UNFILLABLE" - ); - - // Validate sender is allowed to cancel this order - if (order.senderAddress != address(0)) { - require( - order.senderAddress == msg.sender, - "INVALID_SENDER" - ); - } - - // Validate transaction signed by maker - address makerAddress = getCurrentContextAddress(); - require( - order.makerAddress == makerAddress, - "INVALID_MAKER" - ); - } - - /// @dev Calculates amounts filled and fees paid by maker and taker. - /// @param order to be filled. - /// @param takerAssetFilledAmount Amount of takerAsset that will be filled. - /// @return fillResults Amounts filled and fees paid by maker and taker. - function calculateFillResults( - Order memory order, - uint256 takerAssetFilledAmount - ) - internal - pure - returns (FillResults memory fillResults) - { - // Compute proportional transfer amounts - fillResults.takerAssetFilledAmount = takerAssetFilledAmount; - fillResults.makerAssetFilledAmount = safeGetPartialAmountFloor( - takerAssetFilledAmount, - order.takerAssetAmount, - order.makerAssetAmount - ); - fillResults.makerFeePaid = safeGetPartialAmountFloor( - fillResults.makerAssetFilledAmount, - order.makerAssetAmount, - order.makerFee - ); - fillResults.takerFeePaid = safeGetPartialAmountFloor( - takerAssetFilledAmount, - order.takerAssetAmount, - order.takerFee - ); - - return fillResults; - } - - /// @dev Settles an order by transferring assets between counterparties. - /// @param order Order struct containing order specifications. - /// @param takerAddress Address selling takerAsset and buying makerAsset. - /// @param fillResults Amounts to be filled and fees paid by maker and taker. - function settleOrder( - LibOrder.Order memory order, - address takerAddress, - LibFillResults.FillResults memory fillResults - ) - private - { - bytes memory zrxAssetData = ZRX_ASSET_DATA; - dispatchTransferFrom( - order.makerAssetData, - order.makerAddress, - takerAddress, - fillResults.makerAssetFilledAmount - ); - dispatchTransferFrom( - order.takerAssetData, - takerAddress, - order.makerAddress, - fillResults.takerAssetFilledAmount - ); - dispatchTransferFrom( - zrxAssetData, - order.makerAddress, - order.feeRecipientAddress, - fillResults.makerFeePaid - ); - dispatchTransferFrom( - zrxAssetData, - takerAddress, - order.feeRecipientAddress, - fillResults.takerFeePaid - ); - } -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol deleted file mode 100644 index b4f6bdb26..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol +++ /dev/null @@ -1,335 +0,0 @@ -/* - Copyright 2018 ZeroEx Intl. - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - http://www.apache.org/licenses/LICENSE-2.0 - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "../../utils/ReentrancyGuard/ReentrancyGuard.sol"; -import "./libs/LibConstants.sol"; -import "./libs/LibMath.sol"; -import "./libs/LibOrder.sol"; -import "./libs/LibFillResults.sol"; -import "./mixins/MExchangeCore.sol"; -import "./mixins/MMatchOrders.sol"; -import "./mixins/MTransactions.sol"; -import "./mixins/MAssetProxyDispatcher.sol"; - - -contract MixinMatchOrders is - ReentrancyGuard, - LibConstants, - LibMath, - MAssetProxyDispatcher, - MExchangeCore, - MMatchOrders, - MTransactions -{ - /// @dev Match two complementary orders that have a profitable spread. - /// Each order is filled at their respective price point. However, the calculations are - /// carried out as though the orders are both being filled at the right order's price point. - /// The profit made by the left order goes to the taker (who matched the two orders). - /// @param leftOrder First order to match. - /// @param rightOrder Second order to match. - /// @param leftSignature Proof that order was created by the left maker. - /// @param rightSignature Proof that order was created by the right maker. - /// @return matchedFillResults Amounts filled and fees paid by maker and taker of matched orders. - function matchOrders( - LibOrder.Order memory leftOrder, - LibOrder.Order memory rightOrder, - bytes memory leftSignature, - bytes memory rightSignature - ) - public - nonReentrant - returns (LibFillResults.MatchedFillResults memory matchedFillResults) - { - // We assume that rightOrder.takerAssetData == leftOrder.makerAssetData and rightOrder.makerAssetData == leftOrder.takerAssetData. - // If this assumption isn't true, the match will fail at signature validation. - rightOrder.makerAssetData = leftOrder.takerAssetData; - rightOrder.takerAssetData = leftOrder.makerAssetData; - - // Get left & right order info - LibOrder.OrderInfo memory leftOrderInfo = getOrderInfo(leftOrder); - LibOrder.OrderInfo memory rightOrderInfo = getOrderInfo(rightOrder); - - // Fetch taker address - address takerAddress = getCurrentContextAddress(); - - // Either our context is valid or we revert - assertFillableOrder( - leftOrder, - leftOrderInfo, - takerAddress, - leftSignature - ); - assertFillableOrder( - rightOrder, - rightOrderInfo, - takerAddress, - rightSignature - ); - assertValidMatch(leftOrder, rightOrder); - - // Compute proportional fill amounts - matchedFillResults = calculateMatchedFillResults( - leftOrder, - rightOrder, - leftOrderInfo.orderTakerAssetFilledAmount, - rightOrderInfo.orderTakerAssetFilledAmount - ); - - // Validate fill contexts - assertValidFill( - leftOrder, - leftOrderInfo, - matchedFillResults.left.takerAssetFilledAmount, - matchedFillResults.left.takerAssetFilledAmount, - matchedFillResults.left.makerAssetFilledAmount - ); - assertValidFill( - rightOrder, - rightOrderInfo, - matchedFillResults.right.takerAssetFilledAmount, - matchedFillResults.right.takerAssetFilledAmount, - matchedFillResults.right.makerAssetFilledAmount - ); - - // Update exchange state - updateFilledState( - leftOrder, - takerAddress, - leftOrderInfo.orderHash, - leftOrderInfo.orderTakerAssetFilledAmount, - matchedFillResults.left - ); - updateFilledState( - rightOrder, - takerAddress, - rightOrderInfo.orderHash, - rightOrderInfo.orderTakerAssetFilledAmount, - matchedFillResults.right - ); - - // Settle matched orders. Succeeds or throws. - settleMatchedOrders( - leftOrder, - rightOrder, - takerAddress, - matchedFillResults - ); - - return matchedFillResults; - } - - /// @dev Validates context for matchOrders. Succeeds or throws. - /// @param leftOrder First order to match. - /// @param rightOrder Second order to match. - function assertValidMatch( - LibOrder.Order memory leftOrder, - LibOrder.Order memory rightOrder - ) - internal - pure - { - // Make sure there is a profitable spread. - // There is a profitable spread iff the cost per unit bought (OrderA.MakerAmount/OrderA.TakerAmount) for each order is greater - // than the profit per unit sold of the matched order (OrderB.TakerAmount/OrderB.MakerAmount). - // This is satisfied by the equations below: - // / >= / - // AND - // / >= / - // These equations can be combined to get the following: - require( - safeMul(leftOrder.makerAssetAmount, rightOrder.makerAssetAmount) >= - safeMul(leftOrder.takerAssetAmount, rightOrder.takerAssetAmount), - "NEGATIVE_SPREAD_REQUIRED" - ); - } - - /// @dev Calculates fill amounts for the matched orders. - /// Each order is filled at their respective price point. However, the calculations are - /// carried out as though the orders are both being filled at the right order's price point. - /// The profit made by the leftOrder order goes to the taker (who matched the two orders). - /// @param leftOrder First order to match. - /// @param rightOrder Second order to match. - /// @param leftOrderTakerAssetFilledAmount Amount of left order already filled. - /// @param rightOrderTakerAssetFilledAmount Amount of right order already filled. - /// @param matchedFillResults Amounts to fill and fees to pay by maker and taker of matched orders. - function calculateMatchedFillResults( - LibOrder.Order memory leftOrder, - LibOrder.Order memory rightOrder, - uint256 leftOrderTakerAssetFilledAmount, - uint256 rightOrderTakerAssetFilledAmount - ) - internal - pure - returns (LibFillResults.MatchedFillResults memory matchedFillResults) - { - // Derive maker asset amounts for left & right orders, given store taker assert amounts - uint256 leftTakerAssetAmountRemaining = safeSub(leftOrder.takerAssetAmount, leftOrderTakerAssetFilledAmount); - uint256 leftMakerAssetAmountRemaining = safeGetPartialAmountFloor( - leftOrder.makerAssetAmount, - leftOrder.takerAssetAmount, - leftTakerAssetAmountRemaining - ); - uint256 rightTakerAssetAmountRemaining = safeSub(rightOrder.takerAssetAmount, rightOrderTakerAssetFilledAmount); - uint256 rightMakerAssetAmountRemaining = safeGetPartialAmountFloor( - rightOrder.makerAssetAmount, - rightOrder.takerAssetAmount, - rightTakerAssetAmountRemaining - ); - - // Calculate fill results for maker and taker assets: at least one order will be fully filled. - // The maximum amount the left maker can buy is `leftTakerAssetAmountRemaining` - // The maximum amount the right maker can sell is `rightMakerAssetAmountRemaining` - // We have two distinct cases for calculating the fill results: - // Case 1. - // If the left maker can buy more than the right maker can sell, then only the right order is fully filled. - // If the left maker can buy exactly what the right maker can sell, then both orders are fully filled. - // Case 2. - // If the left maker cannot buy more than the right maker can sell, then only the left order is fully filled. - if (leftTakerAssetAmountRemaining >= rightMakerAssetAmountRemaining) { - // Case 1: Right order is fully filled - matchedFillResults.right.makerAssetFilledAmount = rightMakerAssetAmountRemaining; - matchedFillResults.right.takerAssetFilledAmount = rightTakerAssetAmountRemaining; - matchedFillResults.left.takerAssetFilledAmount = matchedFillResults.right.makerAssetFilledAmount; - // Round down to ensure the maker's exchange rate does not exceed the price specified by the order. - // We favor the maker when the exchange rate must be rounded. - matchedFillResults.left.makerAssetFilledAmount = safeGetPartialAmountFloor( - leftOrder.makerAssetAmount, - leftOrder.takerAssetAmount, - matchedFillResults.left.takerAssetFilledAmount - ); - } else { - // Case 2: Left order is fully filled - matchedFillResults.left.makerAssetFilledAmount = leftMakerAssetAmountRemaining; - matchedFillResults.left.takerAssetFilledAmount = leftTakerAssetAmountRemaining; - matchedFillResults.right.makerAssetFilledAmount = matchedFillResults.left.takerAssetFilledAmount; - // Round up to ensure the maker's exchange rate does not exceed the price specified by the order. - // We favor the maker when the exchange rate must be rounded. - matchedFillResults.right.takerAssetFilledAmount = safeGetPartialAmountCeil( - rightOrder.takerAssetAmount, - rightOrder.makerAssetAmount, - matchedFillResults.right.makerAssetFilledAmount - ); - } - - // Calculate amount given to taker - matchedFillResults.leftMakerAssetSpreadAmount = safeSub( - matchedFillResults.left.makerAssetFilledAmount, - matchedFillResults.right.takerAssetFilledAmount - ); - - // Compute fees for left order - matchedFillResults.left.makerFeePaid = safeGetPartialAmountFloor( - matchedFillResults.left.makerAssetFilledAmount, - leftOrder.makerAssetAmount, - leftOrder.makerFee - ); - matchedFillResults.left.takerFeePaid = safeGetPartialAmountFloor( - matchedFillResults.left.takerAssetFilledAmount, - leftOrder.takerAssetAmount, - leftOrder.takerFee - ); - - // Compute fees for right order - matchedFillResults.right.makerFeePaid = safeGetPartialAmountFloor( - matchedFillResults.right.makerAssetFilledAmount, - rightOrder.makerAssetAmount, - rightOrder.makerFee - ); - matchedFillResults.right.takerFeePaid = safeGetPartialAmountFloor( - matchedFillResults.right.takerAssetFilledAmount, - rightOrder.takerAssetAmount, - rightOrder.takerFee - ); - - // Return fill results - return matchedFillResults; - } - - /// @dev Settles matched order by transferring appropriate funds between order makers, taker, and fee recipient. - /// @param leftOrder First matched order. - /// @param rightOrder Second matched order. - /// @param takerAddress Address that matched the orders. The taker receives the spread between orders as profit. - /// @param matchedFillResults Struct holding amounts to transfer between makers, taker, and fee recipients. - function settleMatchedOrders( - LibOrder.Order memory leftOrder, - LibOrder.Order memory rightOrder, - address takerAddress, - LibFillResults.MatchedFillResults memory matchedFillResults - ) - private - { - bytes memory zrxAssetData = ZRX_ASSET_DATA; - // Order makers and taker - dispatchTransferFrom( - leftOrder.makerAssetData, - leftOrder.makerAddress, - rightOrder.makerAddress, - matchedFillResults.right.takerAssetFilledAmount - ); - dispatchTransferFrom( - rightOrder.makerAssetData, - rightOrder.makerAddress, - leftOrder.makerAddress, - matchedFillResults.left.takerAssetFilledAmount - ); - dispatchTransferFrom( - leftOrder.makerAssetData, - leftOrder.makerAddress, - takerAddress, - matchedFillResults.leftMakerAssetSpreadAmount - ); - - // Maker fees - dispatchTransferFrom( - zrxAssetData, - leftOrder.makerAddress, - leftOrder.feeRecipientAddress, - matchedFillResults.left.makerFeePaid - ); - dispatchTransferFrom( - zrxAssetData, - rightOrder.makerAddress, - rightOrder.feeRecipientAddress, - matchedFillResults.right.makerFeePaid - ); - - // Taker fees - if (leftOrder.feeRecipientAddress == rightOrder.feeRecipientAddress) { - dispatchTransferFrom( - zrxAssetData, - takerAddress, - leftOrder.feeRecipientAddress, - safeAdd( - matchedFillResults.left.takerFeePaid, - matchedFillResults.right.takerFeePaid - ) - ); - } else { - dispatchTransferFrom( - zrxAssetData, - takerAddress, - leftOrder.feeRecipientAddress, - matchedFillResults.left.takerFeePaid - ); - dispatchTransferFrom( - zrxAssetData, - takerAddress, - rightOrder.feeRecipientAddress, - matchedFillResults.right.takerFeePaid - ); - } - } -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol deleted file mode 100644 index 176e28351..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol +++ /dev/null @@ -1,324 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../utils/LibBytes/LibBytes.sol"; -import "../../utils/ReentrancyGuard/ReentrancyGuard.sol"; -import "./mixins/MSignatureValidator.sol"; -import "./mixins/MTransactions.sol"; -import "./interfaces/IWallet.sol"; -import "./interfaces/IValidator.sol"; - - -contract MixinSignatureValidator is - ReentrancyGuard, - MSignatureValidator, - MTransactions -{ - using LibBytes for bytes; - - // Mapping of hash => signer => signed - mapping (bytes32 => mapping (address => bool)) public preSigned; - - // Mapping of signer => validator => approved - mapping (address => mapping (address => bool)) public allowedValidators; - - /// @dev Approves a hash on-chain using any valid signature type. - /// After presigning a hash, the preSign signature type will become valid for that hash and signer. - /// @param signerAddress Address that should have signed the given hash. - /// @param signature Proof that the hash has been signed by signer. - function preSign( - bytes32 hash, - address signerAddress, - bytes signature - ) - external - { - if (signerAddress != msg.sender) { - require( - isValidSignature( - hash, - signerAddress, - signature - ), - "INVALID_SIGNATURE" - ); - } - preSigned[hash][signerAddress] = true; - } - - /// @dev Approves/unnapproves a Validator contract to verify signatures on signer's behalf. - /// @param validatorAddress Address of Validator contract. - /// @param approval Approval or disapproval of Validator contract. - function setSignatureValidatorApproval( - address validatorAddress, - bool approval - ) - external - nonReentrant - { - address signerAddress = getCurrentContextAddress(); - allowedValidators[signerAddress][validatorAddress] = approval; - emit SignatureValidatorApproval( - signerAddress, - validatorAddress, - approval - ); - } - - /// @dev Verifies that a hash has been signed by the given signer. - /// @param hash Any 32 byte hash. - /// @param signerAddress Address that should have signed the given hash. - /// @param signature Proof that the hash has been signed by signer. - /// @return True if the address recovered from the provided signature matches the input signer address. - function isValidSignature( - bytes32 hash, - address signerAddress, - bytes memory signature - ) - public - view - returns (bool isValid) - { - require( - signature.length > 0, - "LENGTH_GREATER_THAN_0_REQUIRED" - ); - - // Pop last byte off of signature byte array. - uint8 signatureTypeRaw = uint8(signature.popLastByte()); - - // Ensure signature is supported - require( - signatureTypeRaw < uint8(SignatureType.NSignatureTypes), - "SIGNATURE_UNSUPPORTED" - ); - - SignatureType signatureType = SignatureType(signatureTypeRaw); - - // Variables are not scoped in Solidity. - uint8 v; - bytes32 r; - bytes32 s; - address recovered; - - // Always illegal signature. - // This is always an implicit option since a signer can create a - // signature array with invalid type or length. We may as well make - // it an explicit option. This aids testing and analysis. It is - // also the initialization value for the enum type. - if (signatureType == SignatureType.Illegal) { - revert("SIGNATURE_ILLEGAL"); - - // Always invalid signature. - // Like Illegal, this is always implicitly available and therefore - // offered explicitly. It can be implicitly created by providing - // a correctly formatted but incorrect signature. - } else if (signatureType == SignatureType.Invalid) { - require( - signature.length == 0, - "LENGTH_0_REQUIRED" - ); - isValid = false; - return isValid; - - // Signature using EIP712 - } else if (signatureType == SignatureType.EIP712) { - require( - signature.length == 65, - "LENGTH_65_REQUIRED" - ); - v = uint8(signature[0]); - r = signature.readBytes32(1); - s = signature.readBytes32(33); - recovered = ecrecover( - hash, - v, - r, - s - ); - isValid = signerAddress == recovered; - return isValid; - - // Signed using web3.eth_sign - } else if (signatureType == SignatureType.EthSign) { - require( - signature.length == 65, - "LENGTH_65_REQUIRED" - ); - v = uint8(signature[0]); - r = signature.readBytes32(1); - s = signature.readBytes32(33); - recovered = ecrecover( - keccak256(abi.encodePacked( - "\x19Ethereum Signed Message:\n32", - hash - )), - v, - r, - s - ); - isValid = signerAddress == recovered; - return isValid; - - // Signature verified by wallet contract. - // If used with an order, the maker of the order is the wallet contract. - } else if (signatureType == SignatureType.Wallet) { - isValid = isValidWalletSignature( - hash, - signerAddress, - signature - ); - return isValid; - - // Signature verified by validator contract. - // If used with an order, the maker of the order can still be an EOA. - // A signature using this type should be encoded as: - // | Offset | Length | Contents | - // | 0x00 | x | Signature to validate | - // | 0x00 + x | 20 | Address of validator contract | - // | 0x14 + x | 1 | Signature type is always "\x06" | - } else if (signatureType == SignatureType.Validator) { - // Pop last 20 bytes off of signature byte array. - address validatorAddress = signature.popLast20Bytes(); - - // Ensure signer has approved validator. - if (!allowedValidators[signerAddress][validatorAddress]) { - return false; - } - isValid = isValidValidatorSignature( - validatorAddress, - hash, - signerAddress, - signature - ); - return isValid; - - // Signer signed hash previously using the preSign function. - } else if (signatureType == SignatureType.PreSigned) { - isValid = preSigned[hash][signerAddress]; - return isValid; - } - - // Anything else is illegal (We do not return false because - // the signature may actually be valid, just not in a format - // that we currently support. In this case returning false - // may lead the caller to incorrectly believe that the - // signature was invalid.) - revert("SIGNATURE_UNSUPPORTED"); - } - - /// @dev Verifies signature using logic defined by Wallet contract. - /// @param hash Any 32 byte hash. - /// @param walletAddress Address that should have signed the given hash - /// and defines its own signature verification method. - /// @param signature Proof that the hash has been signed by signer. - /// @return True if signature is valid for given wallet.. - function isValidWalletSignature( - bytes32 hash, - address walletAddress, - bytes signature - ) - internal - view - returns (bool isValid) - { - bytes memory calldata = abi.encodeWithSelector( - IWallet(walletAddress).isValidSignature.selector, - hash, - signature - ); - assembly { - let cdStart := add(calldata, 32) - let success := staticcall( - gas, // forward all gas - walletAddress, // address of Wallet contract - cdStart, // pointer to start of input - mload(calldata), // length of input - cdStart, // write output over input - 32 // output size is 32 bytes - ) - - switch success - case 0 { - // Revert with `Error("WALLET_ERROR")` - mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000) - mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000) - mstore(64, 0x0000000c57414c4c45545f4552524f5200000000000000000000000000000000) - mstore(96, 0) - revert(0, 100) - } - case 1 { - // Signature is valid if call did not revert and returned true - isValid := mload(cdStart) - } - } - return isValid; - } - - /// @dev Verifies signature using logic defined by Validator contract. - /// @param validatorAddress Address of validator contract. - /// @param hash Any 32 byte hash. - /// @param signerAddress Address that should have signed the given hash. - /// @param signature Proof that the hash has been signed by signer. - /// @return True if the address recovered from the provided signature matches the input signer address. - function isValidValidatorSignature( - address validatorAddress, - bytes32 hash, - address signerAddress, - bytes signature - ) - internal - view - returns (bool isValid) - { - bytes memory calldata = abi.encodeWithSelector( - IValidator(signerAddress).isValidSignature.selector, - hash, - signerAddress, - signature - ); - assembly { - let cdStart := add(calldata, 32) - let success := staticcall( - gas, // forward all gas - validatorAddress, // address of Validator contract - cdStart, // pointer to start of input - mload(calldata), // length of input - cdStart, // write output over input - 32 // output size is 32 bytes - ) - - switch success - case 0 { - // Revert with `Error("VALIDATOR_ERROR")` - mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000) - mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000) - mstore(64, 0x0000000f56414c494441544f525f4552524f5200000000000000000000000000) - mstore(96, 0) - revert(0, 100) - } - case 1 { - // Signature is valid if call did not revert and returned true - isValid := mload(cdStart) - } - } - return isValid; - } -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol deleted file mode 100644 index 3a76ca202..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol +++ /dev/null @@ -1,152 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ -pragma solidity 0.4.24; - -import "./libs/LibExchangeErrors.sol"; -import "./mixins/MSignatureValidator.sol"; -import "./mixins/MTransactions.sol"; -import "./libs/LibEIP712.sol"; - - -contract MixinTransactions is - LibEIP712, - MSignatureValidator, - MTransactions -{ - // Mapping of transaction hash => executed - // This prevents transactions from being executed more than once. - mapping (bytes32 => bool) public transactions; - - // Address of current transaction signer - address public currentContextAddress; - - /// @dev Executes an exchange method call in the context of signer. - /// @param salt Arbitrary number to ensure uniqueness of transaction hash. - /// @param signerAddress Address of transaction signer. - /// @param data AbiV2 encoded calldata. - /// @param signature Proof of signer transaction by signer. - function executeTransaction( - uint256 salt, - address signerAddress, - bytes data, - bytes signature - ) - external - { - // Prevent reentrancy - require( - currentContextAddress == address(0), - "REENTRANCY_ILLEGAL" - ); - - bytes32 transactionHash = hashEIP712Message(hashZeroExTransaction( - salt, - signerAddress, - data - )); - - // Validate transaction has not been executed - require( - !transactions[transactionHash], - "INVALID_TX_HASH" - ); - - // Transaction always valid if signer is sender of transaction - if (signerAddress != msg.sender) { - // Validate signature - require( - isValidSignature( - transactionHash, - signerAddress, - signature - ), - "INVALID_TX_SIGNATURE" - ); - - // Set the current transaction signer - currentContextAddress = signerAddress; - } - - // Execute transaction - transactions[transactionHash] = true; - require( - address(this).delegatecall(data), - "FAILED_EXECUTION" - ); - - // Reset current transaction signer if it was previously updated - if (signerAddress != msg.sender) { - currentContextAddress = address(0); - } - } - - /// @dev Calculates EIP712 hash of the Transaction. - /// @param salt Arbitrary number to ensure uniqueness of transaction hash. - /// @param signerAddress Address of transaction signer. - /// @param data AbiV2 encoded calldata. - /// @return EIP712 hash of the Transaction. - function hashZeroExTransaction( - uint256 salt, - address signerAddress, - bytes memory data - ) - internal - pure - returns (bytes32 result) - { - bytes32 schemaHash = EIP712_ZEROEX_TRANSACTION_SCHEMA_HASH; - bytes32 dataHash = keccak256(data); - - // Assembly for more efficiently computing: - // keccak256(abi.encodePacked( - // EIP712_ZEROEX_TRANSACTION_SCHEMA_HASH, - // salt, - // bytes32(signerAddress), - // keccak256(data) - // )); - - assembly { - // Load free memory pointer - let memPtr := mload(64) - - mstore(memPtr, schemaHash) // hash of schema - mstore(add(memPtr, 32), salt) // salt - mstore(add(memPtr, 64), and(signerAddress, 0xffffffffffffffffffffffffffffffffffffffff)) // signerAddress - mstore(add(memPtr, 96), dataHash) // hash of data - - // Compute hash - result := keccak256(memPtr, 128) - } - return result; - } - - /// @dev The current function will be called in the context of this address (either 0x transaction signer or `msg.sender`). - /// If calling a fill function, this address will represent the taker. - /// If calling a cancel function, this address will represent the maker. - /// @return Signer of 0x transaction if entry point is `executeTransaction`. - /// `msg.sender` if entry point is any other function. - function getCurrentContextAddress() - internal - view - returns (address) - { - address currentContextAddress_ = currentContextAddress; - address contextAddress = currentContextAddress_ == address(0) ? msg.sender : currentContextAddress_; - return contextAddress; - } -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol deleted file mode 100644 index cddff0e5f..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol +++ /dev/null @@ -1,426 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "../../utils/ReentrancyGuard/ReentrancyGuard.sol"; -import "./libs/LibMath.sol"; -import "./libs/LibOrder.sol"; -import "./libs/LibFillResults.sol"; -import "./libs/LibAbiEncoder.sol"; -import "./mixins/MExchangeCore.sol"; -import "./mixins/MWrapperFunctions.sol"; - - -contract MixinWrapperFunctions is - ReentrancyGuard, - LibMath, - LibFillResults, - LibAbiEncoder, - MExchangeCore, - MWrapperFunctions -{ - /// @dev Fills the input order. Reverts if exact takerAssetFillAmount not filled. - /// @param order Order struct containing order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param signature Proof that order has been created by maker. - function fillOrKillOrder( - LibOrder.Order memory order, - uint256 takerAssetFillAmount, - bytes memory signature - ) - public - nonReentrant - returns (FillResults memory fillResults) - { - fillResults = fillOrKillOrderInternal( - order, - takerAssetFillAmount, - signature - ); - return fillResults; - } - - /// @dev Fills the input order. - /// Returns false if the transaction would otherwise revert. - /// @param order Order struct containing order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param signature Proof that order has been created by maker. - /// @return Amounts filled and fees paid by maker and taker. - function fillOrderNoThrow( - LibOrder.Order memory order, - uint256 takerAssetFillAmount, - bytes memory signature - ) - public - returns (FillResults memory fillResults) - { - // ABI encode calldata for `fillOrder` - bytes memory fillOrderCalldata = abiEncodeFillOrder( - order, - takerAssetFillAmount, - signature - ); - - // Delegate to `fillOrder` and handle any exceptions gracefully - assembly { - let success := delegatecall( - gas, // forward all gas - address, // call address of this contract - add(fillOrderCalldata, 32), // pointer to start of input (skip array length in first 32 bytes) - mload(fillOrderCalldata), // length of input - fillOrderCalldata, // write output over input - 128 // output size is 128 bytes - ) - if success { - mstore(fillResults, mload(fillOrderCalldata)) - mstore(add(fillResults, 32), mload(add(fillOrderCalldata, 32))) - mstore(add(fillResults, 64), mload(add(fillOrderCalldata, 64))) - mstore(add(fillResults, 96), mload(add(fillOrderCalldata, 96))) - } - } - // fillResults values will be 0 by default if call was unsuccessful - return fillResults; - } - - /// @dev Synchronously executes multiple calls of fillOrder. - /// @param orders Array of order specifications. - /// @param takerAssetFillAmounts Array of desired amounts of takerAsset to sell in orders. - /// @param signatures Proofs that orders have been created by makers. - /// @return Amounts filled and fees paid by makers and taker. - /// NOTE: makerAssetFilledAmount and takerAssetFilledAmount may include amounts filled of different assets. - function batchFillOrders( - LibOrder.Order[] memory orders, - uint256[] memory takerAssetFillAmounts, - bytes[] memory signatures - ) - public - nonReentrant - returns (FillResults memory totalFillResults) - { - uint256 ordersLength = orders.length; - for (uint256 i = 0; i != ordersLength; i++) { - FillResults memory singleFillResults = fillOrderInternal( - orders[i], - takerAssetFillAmounts[i], - signatures[i] - ); - addFillResults(totalFillResults, singleFillResults); - } - return totalFillResults; - } - - /// @dev Synchronously executes multiple calls of fillOrKill. - /// @param orders Array of order specifications. - /// @param takerAssetFillAmounts Array of desired amounts of takerAsset to sell in orders. - /// @param signatures Proofs that orders have been created by makers. - /// @return Amounts filled and fees paid by makers and taker. - /// NOTE: makerAssetFilledAmount and takerAssetFilledAmount may include amounts filled of different assets. - function batchFillOrKillOrders( - LibOrder.Order[] memory orders, - uint256[] memory takerAssetFillAmounts, - bytes[] memory signatures - ) - public - nonReentrant - returns (FillResults memory totalFillResults) - { - uint256 ordersLength = orders.length; - for (uint256 i = 0; i != ordersLength; i++) { - FillResults memory singleFillResults = fillOrKillOrderInternal( - orders[i], - takerAssetFillAmounts[i], - signatures[i] - ); - addFillResults(totalFillResults, singleFillResults); - } - return totalFillResults; - } - - /// @dev Fills an order with specified parameters and ECDSA signature. - /// Returns false if the transaction would otherwise revert. - /// @param orders Array of order specifications. - /// @param takerAssetFillAmounts Array of desired amounts of takerAsset to sell in orders. - /// @param signatures Proofs that orders have been created by makers. - /// @return Amounts filled and fees paid by makers and taker. - /// NOTE: makerAssetFilledAmount and takerAssetFilledAmount may include amounts filled of different assets. - function batchFillOrdersNoThrow( - LibOrder.Order[] memory orders, - uint256[] memory takerAssetFillAmounts, - bytes[] memory signatures - ) - public - returns (FillResults memory totalFillResults) - { - uint256 ordersLength = orders.length; - for (uint256 i = 0; i != ordersLength; i++) { - FillResults memory singleFillResults = fillOrderNoThrow( - orders[i], - takerAssetFillAmounts[i], - signatures[i] - ); - addFillResults(totalFillResults, singleFillResults); - } - return totalFillResults; - } - - /// @dev Synchronously executes multiple calls of fillOrder until total amount of takerAsset is sold by taker. - /// @param orders Array of order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param signatures Proofs that orders have been created by makers. - /// @return Amounts filled and fees paid by makers and taker. - function marketSellOrders( - LibOrder.Order[] memory orders, - uint256 takerAssetFillAmount, - bytes[] memory signatures - ) - public - nonReentrant - returns (FillResults memory totalFillResults) - { - bytes memory takerAssetData = orders[0].takerAssetData; - - uint256 ordersLength = orders.length; - for (uint256 i = 0; i != ordersLength; i++) { - - // We assume that asset being sold by taker is the same for each order. - // Rather than passing this in as calldata, we use the takerAssetData from the first order in all later orders. - orders[i].takerAssetData = takerAssetData; - - // Calculate the remaining amount of takerAsset to sell - uint256 remainingTakerAssetFillAmount = safeSub(takerAssetFillAmount, totalFillResults.takerAssetFilledAmount); - - // Attempt to sell the remaining amount of takerAsset - FillResults memory singleFillResults = fillOrderInternal( - orders[i], - remainingTakerAssetFillAmount, - signatures[i] - ); - - // Update amounts filled and fees paid by maker and taker - addFillResults(totalFillResults, singleFillResults); - - // Stop execution if the entire amount of takerAsset has been sold - if (totalFillResults.takerAssetFilledAmount >= takerAssetFillAmount) { - break; - } - } - return totalFillResults; - } - - /// @dev Synchronously executes multiple calls of fillOrder until total amount of takerAsset is sold by taker. - /// Returns false if the transaction would otherwise revert. - /// @param orders Array of order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param signatures Proofs that orders have been signed by makers. - /// @return Amounts filled and fees paid by makers and taker. - function marketSellOrdersNoThrow( - LibOrder.Order[] memory orders, - uint256 takerAssetFillAmount, - bytes[] memory signatures - ) - public - returns (FillResults memory totalFillResults) - { - bytes memory takerAssetData = orders[0].takerAssetData; - - uint256 ordersLength = orders.length; - for (uint256 i = 0; i != ordersLength; i++) { - - // We assume that asset being sold by taker is the same for each order. - // Rather than passing this in as calldata, we use the takerAssetData from the first order in all later orders. - orders[i].takerAssetData = takerAssetData; - - // Calculate the remaining amount of takerAsset to sell - uint256 remainingTakerAssetFillAmount = safeSub(takerAssetFillAmount, totalFillResults.takerAssetFilledAmount); - - // Attempt to sell the remaining amount of takerAsset - FillResults memory singleFillResults = fillOrderNoThrow( - orders[i], - remainingTakerAssetFillAmount, - signatures[i] - ); - - // Update amounts filled and fees paid by maker and taker - addFillResults(totalFillResults, singleFillResults); - - // Stop execution if the entire amount of takerAsset has been sold - if (totalFillResults.takerAssetFilledAmount >= takerAssetFillAmount) { - break; - } - } - return totalFillResults; - } - - /// @dev Synchronously executes multiple calls of fillOrder until total amount of makerAsset is bought by taker. - /// @param orders Array of order specifications. - /// @param makerAssetFillAmount Desired amount of makerAsset to buy. - /// @param signatures Proofs that orders have been signed by makers. - /// @return Amounts filled and fees paid by makers and taker. - function marketBuyOrders( - LibOrder.Order[] memory orders, - uint256 makerAssetFillAmount, - bytes[] memory signatures - ) - public - nonReentrant - returns (FillResults memory totalFillResults) - { - bytes memory makerAssetData = orders[0].makerAssetData; - - uint256 ordersLength = orders.length; - for (uint256 i = 0; i != ordersLength; i++) { - - // We assume that asset being bought by taker is the same for each order. - // Rather than passing this in as calldata, we copy the makerAssetData from the first order onto all later orders. - orders[i].makerAssetData = makerAssetData; - - // Calculate the remaining amount of makerAsset to buy - uint256 remainingMakerAssetFillAmount = safeSub(makerAssetFillAmount, totalFillResults.makerAssetFilledAmount); - - // Convert the remaining amount of makerAsset to buy into remaining amount - // of takerAsset to sell, assuming entire amount can be sold in the current order - uint256 remainingTakerAssetFillAmount = getPartialAmountFloor( - orders[i].takerAssetAmount, - orders[i].makerAssetAmount, - remainingMakerAssetFillAmount - ); - - // Attempt to sell the remaining amount of takerAsset - FillResults memory singleFillResults = fillOrderInternal( - orders[i], - remainingTakerAssetFillAmount, - signatures[i] - ); - - // Update amounts filled and fees paid by maker and taker - addFillResults(totalFillResults, singleFillResults); - - // Stop execution if the entire amount of makerAsset has been bought - if (totalFillResults.makerAssetFilledAmount >= makerAssetFillAmount) { - break; - } - } - return totalFillResults; - } - - /// @dev Synchronously executes multiple fill orders in a single transaction until total amount is bought by taker. - /// Returns false if the transaction would otherwise revert. - /// @param orders Array of order specifications. - /// @param makerAssetFillAmount Desired amount of makerAsset to buy. - /// @param signatures Proofs that orders have been signed by makers. - /// @return Amounts filled and fees paid by makers and taker. - function marketBuyOrdersNoThrow( - LibOrder.Order[] memory orders, - uint256 makerAssetFillAmount, - bytes[] memory signatures - ) - public - returns (FillResults memory totalFillResults) - { - bytes memory makerAssetData = orders[0].makerAssetData; - - uint256 ordersLength = orders.length; - for (uint256 i = 0; i != ordersLength; i++) { - - // We assume that asset being bought by taker is the same for each order. - // Rather than passing this in as calldata, we copy the makerAssetData from the first order onto all later orders. - orders[i].makerAssetData = makerAssetData; - - // Calculate the remaining amount of makerAsset to buy - uint256 remainingMakerAssetFillAmount = safeSub(makerAssetFillAmount, totalFillResults.makerAssetFilledAmount); - - // Convert the remaining amount of makerAsset to buy into remaining amount - // of takerAsset to sell, assuming entire amount can be sold in the current order - uint256 remainingTakerAssetFillAmount = getPartialAmountFloor( - orders[i].takerAssetAmount, - orders[i].makerAssetAmount, - remainingMakerAssetFillAmount - ); - - // Attempt to sell the remaining amount of takerAsset - FillResults memory singleFillResults = fillOrderNoThrow( - orders[i], - remainingTakerAssetFillAmount, - signatures[i] - ); - - // Update amounts filled and fees paid by maker and taker - addFillResults(totalFillResults, singleFillResults); - - // Stop execution if the entire amount of makerAsset has been bought - if (totalFillResults.makerAssetFilledAmount >= makerAssetFillAmount) { - break; - } - } - return totalFillResults; - } - - /// @dev Synchronously cancels multiple orders in a single transaction. - /// @param orders Array of order specifications. - function batchCancelOrders(LibOrder.Order[] memory orders) - public - nonReentrant - { - uint256 ordersLength = orders.length; - for (uint256 i = 0; i != ordersLength; i++) { - cancelOrderInternal(orders[i]); - } - } - - /// @dev Fetches information for all passed in orders. - /// @param orders Array of order specifications. - /// @return Array of OrderInfo instances that correspond to each order. - function getOrdersInfo(LibOrder.Order[] memory orders) - public - view - returns (LibOrder.OrderInfo[] memory) - { - uint256 ordersLength = orders.length; - LibOrder.OrderInfo[] memory ordersInfo = new LibOrder.OrderInfo[](ordersLength); - for (uint256 i = 0; i != ordersLength; i++) { - ordersInfo[i] = getOrderInfo(orders[i]); - } - return ordersInfo; - } - - /// @dev Fills the input order. Reverts if exact takerAssetFillAmount not filled. - /// @param order Order struct containing order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param signature Proof that order has been created by maker. - function fillOrKillOrderInternal( - LibOrder.Order memory order, - uint256 takerAssetFillAmount, - bytes memory signature - ) - internal - returns (FillResults memory fillResults) - { - fillResults = fillOrderInternal( - order, - takerAssetFillAmount, - signature - ); - require( - fillResults.takerAssetFilledAmount == takerAssetFillAmount, - "COMPLETE_FILL_FAILED" - ); - return fillResults; - } -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IAssetProxyDispatcher.sol b/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IAssetProxyDispatcher.sol deleted file mode 100644 index 8db8d6f6c..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IAssetProxyDispatcher.sol +++ /dev/null @@ -1,37 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - - -contract IAssetProxyDispatcher { - - /// @dev Registers an asset proxy to its asset proxy id. - /// Once an asset proxy is registered, it cannot be unregistered. - /// @param assetProxy Address of new asset proxy to register. - function registerAssetProxy(address assetProxy) - external; - - /// @dev Gets an asset proxy. - /// @param assetProxyId Id of the asset proxy. - /// @return The asset proxy registered to assetProxyId. Returns 0x0 if no proxy is registered. - function getAssetProxy(bytes4 assetProxyId) - external - view - returns (address); -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IExchange.sol b/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IExchange.sol deleted file mode 100644 index b92abba04..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IExchange.sol +++ /dev/null @@ -1,38 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "./IExchangeCore.sol"; -import "./IMatchOrders.sol"; -import "./ISignatureValidator.sol"; -import "./ITransactions.sol"; -import "./IAssetProxyDispatcher.sol"; -import "./IWrapperFunctions.sol"; - - -// solhint-disable no-empty-blocks -contract IExchange is - IExchangeCore, - IMatchOrders, - ISignatureValidator, - ITransactions, - IAssetProxyDispatcher, - IWrapperFunctions -{} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IExchangeCore.sol deleted file mode 100644 index 9995e0385..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IExchangeCore.sol +++ /dev/null @@ -1,60 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "../libs/LibOrder.sol"; -import "../libs/LibFillResults.sol"; - - -contract IExchangeCore { - - /// @dev Cancels all orders created by makerAddress with a salt less than or equal to the targetOrderEpoch - /// and senderAddress equal to msg.sender (or null address if msg.sender == makerAddress). - /// @param targetOrderEpoch Orders created with a salt less or equal to this value will be cancelled. - function cancelOrdersUpTo(uint256 targetOrderEpoch) - external; - - /// @dev Fills the input order. - /// @param order Order struct containing order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param signature Proof that order has been created by maker. - /// @return Amounts filled and fees paid by maker and taker. - function fillOrder( - LibOrder.Order memory order, - uint256 takerAssetFillAmount, - bytes memory signature - ) - public - returns (LibFillResults.FillResults memory fillResults); - - /// @dev After calling, the order can not be filled anymore. - /// @param order Order struct containing order specifications. - function cancelOrder(LibOrder.Order memory order) - public; - - /// @dev Gets information about an order: status, hash, and amount filled. - /// @param order Order to gather information on. - /// @return OrderInfo Information about the order and its state. - /// See LibOrder.OrderInfo for a complete description. - function getOrderInfo(LibOrder.Order memory order) - public - view - returns (LibOrder.OrderInfo memory orderInfo); -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IMatchOrders.sol deleted file mode 100644 index 73447f3ae..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IMatchOrders.sol +++ /dev/null @@ -1,44 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "../libs/LibOrder.sol"; -import "../libs/LibFillResults.sol"; - - -contract IMatchOrders { - - /// @dev Match two complementary orders that have a profitable spread. - /// Each order is filled at their respective price point. However, the calculations are - /// carried out as though the orders are both being filled at the right order's price point. - /// The profit made by the left order goes to the taker (who matched the two orders). - /// @param leftOrder First order to match. - /// @param rightOrder Second order to match. - /// @param leftSignature Proof that order was created by the left maker. - /// @param rightSignature Proof that order was created by the right maker. - /// @return matchedFillResults Amounts filled and fees paid by maker and taker of matched orders. - function matchOrders( - LibOrder.Order memory leftOrder, - LibOrder.Order memory rightOrder, - bytes memory leftSignature, - bytes memory rightSignature - ) - public - returns (LibFillResults.MatchedFillResults memory matchedFillResults); -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/ISignatureValidator.sol b/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/ISignatureValidator.sol deleted file mode 100644 index 1fd0eccf0..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/ISignatureValidator.sol +++ /dev/null @@ -1,57 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - - -contract ISignatureValidator { - - /// @dev Approves a hash on-chain using any valid signature type. - /// After presigning a hash, the preSign signature type will become valid for that hash and signer. - /// @param signerAddress Address that should have signed the given hash. - /// @param signature Proof that the hash has been signed by signer. - function preSign( - bytes32 hash, - address signerAddress, - bytes signature - ) - external; - - /// @dev Approves/unnapproves a Validator contract to verify signatures on signer's behalf. - /// @param validatorAddress Address of Validator contract. - /// @param approval Approval or disapproval of Validator contract. - function setSignatureValidatorApproval( - address validatorAddress, - bool approval - ) - external; - - /// @dev Verifies that a signature is valid. - /// @param hash Message hash that is signed. - /// @param signerAddress Address of signer. - /// @param signature Proof of signing. - /// @return Validity of order signature. - function isValidSignature( - bytes32 hash, - address signerAddress, - bytes memory signature - ) - public - view - returns (bool isValid); -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/ITransactions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/ITransactions.sol deleted file mode 100644 index 4446c55ce..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/ITransactions.sol +++ /dev/null @@ -1,35 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ -pragma solidity 0.4.24; - - -contract ITransactions { - - /// @dev Executes an exchange method call in the context of signer. - /// @param salt Arbitrary number to ensure uniqueness of transaction hash. - /// @param signerAddress Address of transaction signer. - /// @param data AbiV2 encoded calldata. - /// @param signature Proof of signer transaction by signer. - function executeTransaction( - uint256 salt, - address signerAddress, - bytes data, - bytes signature - ) - external; -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IValidator.sol b/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IValidator.sol deleted file mode 100644 index 2dd69100c..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IValidator.sol +++ /dev/null @@ -1,37 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - - -contract IValidator { - - /// @dev Verifies that a signature is valid. - /// @param hash Message hash that is signed. - /// @param signerAddress Address that should have signed the given hash. - /// @param signature Proof of signing. - /// @return Validity of order signature. - function isValidSignature( - bytes32 hash, - address signerAddress, - bytes signature - ) - external - view - returns (bool isValid); -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IWallet.sol b/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IWallet.sol deleted file mode 100644 index c97161ca6..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IWallet.sol +++ /dev/null @@ -1,35 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - - -contract IWallet { - - /// @dev Verifies that a signature is valid. - /// @param hash Message hash that is signed. - /// @param signature Proof of signing. - /// @return Validity of order signature. - function isValidSignature( - bytes32 hash, - bytes signature - ) - external - view - returns (bool isValid); -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IWrapperFunctions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IWrapperFunctions.sol deleted file mode 100644 index 56a533646..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IWrapperFunctions.sol +++ /dev/null @@ -1,160 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "../libs/LibOrder.sol"; -import "../libs/LibFillResults.sol"; - - -contract IWrapperFunctions { - - /// @dev Fills the input order. Reverts if exact takerAssetFillAmount not filled. - /// @param order LibOrder.Order struct containing order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param signature Proof that order has been created by maker. - function fillOrKillOrder( - LibOrder.Order memory order, - uint256 takerAssetFillAmount, - bytes memory signature - ) - public - returns (LibFillResults.FillResults memory fillResults); - - /// @dev Fills an order with specified parameters and ECDSA signature. - /// Returns false if the transaction would otherwise revert. - /// @param order LibOrder.Order struct containing order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param signature Proof that order has been created by maker. - /// @return Amounts filled and fees paid by maker and taker. - function fillOrderNoThrow( - LibOrder.Order memory order, - uint256 takerAssetFillAmount, - bytes memory signature - ) - public - returns (LibFillResults.FillResults memory fillResults); - - /// @dev Synchronously executes multiple calls of fillOrder. - /// @param orders Array of order specifications. - /// @param takerAssetFillAmounts Array of desired amounts of takerAsset to sell in orders. - /// @param signatures Proofs that orders have been created by makers. - /// @return Amounts filled and fees paid by makers and taker. - function batchFillOrders( - LibOrder.Order[] memory orders, - uint256[] memory takerAssetFillAmounts, - bytes[] memory signatures - ) - public - returns (LibFillResults.FillResults memory totalFillResults); - - /// @dev Synchronously executes multiple calls of fillOrKill. - /// @param orders Array of order specifications. - /// @param takerAssetFillAmounts Array of desired amounts of takerAsset to sell in orders. - /// @param signatures Proofs that orders have been created by makers. - /// @return Amounts filled and fees paid by makers and taker. - function batchFillOrKillOrders( - LibOrder.Order[] memory orders, - uint256[] memory takerAssetFillAmounts, - bytes[] memory signatures - ) - public - returns (LibFillResults.FillResults memory totalFillResults); - - /// @dev Fills an order with specified parameters and ECDSA signature. - /// Returns false if the transaction would otherwise revert. - /// @param orders Array of order specifications. - /// @param takerAssetFillAmounts Array of desired amounts of takerAsset to sell in orders. - /// @param signatures Proofs that orders have been created by makers. - /// @return Amounts filled and fees paid by makers and taker. - function batchFillOrdersNoThrow( - LibOrder.Order[] memory orders, - uint256[] memory takerAssetFillAmounts, - bytes[] memory signatures - ) - public - returns (LibFillResults.FillResults memory totalFillResults); - - /// @dev Synchronously executes multiple calls of fillOrder until total amount of takerAsset is sold by taker. - /// @param orders Array of order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param signatures Proofs that orders have been created by makers. - /// @return Amounts filled and fees paid by makers and taker. - function marketSellOrders( - LibOrder.Order[] memory orders, - uint256 takerAssetFillAmount, - bytes[] memory signatures - ) - public - returns (LibFillResults.FillResults memory totalFillResults); - - /// @dev Synchronously executes multiple calls of fillOrder until total amount of takerAsset is sold by taker. - /// Returns false if the transaction would otherwise revert. - /// @param orders Array of order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param signatures Proofs that orders have been signed by makers. - /// @return Amounts filled and fees paid by makers and taker. - function marketSellOrdersNoThrow( - LibOrder.Order[] memory orders, - uint256 takerAssetFillAmount, - bytes[] memory signatures - ) - public - returns (LibFillResults.FillResults memory totalFillResults); - - /// @dev Synchronously executes multiple calls of fillOrder until total amount of makerAsset is bought by taker. - /// @param orders Array of order specifications. - /// @param makerAssetFillAmount Desired amount of makerAsset to buy. - /// @param signatures Proofs that orders have been signed by makers. - /// @return Amounts filled and fees paid by makers and taker. - function marketBuyOrders( - LibOrder.Order[] memory orders, - uint256 makerAssetFillAmount, - bytes[] memory signatures - ) - public - returns (LibFillResults.FillResults memory totalFillResults); - - /// @dev Synchronously executes multiple fill orders in a single transaction until total amount is bought by taker. - /// Returns false if the transaction would otherwise revert. - /// @param orders Array of order specifications. - /// @param makerAssetFillAmount Desired amount of makerAsset to buy. - /// @param signatures Proofs that orders have been signed by makers. - /// @return Amounts filled and fees paid by makers and taker. - function marketBuyOrdersNoThrow( - LibOrder.Order[] memory orders, - uint256 makerAssetFillAmount, - bytes[] memory signatures - ) - public - returns (LibFillResults.FillResults memory totalFillResults); - - /// @dev Synchronously cancels multiple orders in a single transaction. - /// @param orders Array of order specifications. - function batchCancelOrders(LibOrder.Order[] memory orders) - public; - - /// @dev Fetches information for all passed in orders - /// @param orders Array of order specifications. - /// @return Array of OrderInfo instances that correspond to each order. - function getOrdersInfo(LibOrder.Order[] memory orders) - public - view - returns (LibOrder.OrderInfo[] memory); -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibAbiEncoder.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibAbiEncoder.sol deleted file mode 100644 index 4aad37709..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibAbiEncoder.sol +++ /dev/null @@ -1,215 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "./LibOrder.sol"; - - -contract LibAbiEncoder { - - /// @dev ABI encodes calldata for `fillOrder`. - /// @param order Order struct containing order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param signature Proof that order has been created by maker. - /// @return ABI encoded calldata for `fillOrder`. - function abiEncodeFillOrder( - LibOrder.Order memory order, - uint256 takerAssetFillAmount, - bytes memory signature - ) - internal - pure - returns (bytes memory fillOrderCalldata) - { - // We need to call MExchangeCore.fillOrder using a delegatecall in - // assembly so that we can intercept a call that throws. For this, we - // need the input encoded in memory in the Ethereum ABIv2 format [1]. - - // | Area | Offset | Length | Contents | - // | -------- |--------|---------|-------------------------------------------- | - // | Header | 0x00 | 4 | function selector | - // | Params | | 3 * 32 | function parameters: | - // | | 0x00 | | 1. offset to order (*) | - // | | 0x20 | | 2. takerAssetFillAmount | - // | | 0x40 | | 3. offset to signature (*) | - // | Data | | 12 * 32 | order: | - // | | 0x000 | | 1. senderAddress | - // | | 0x020 | | 2. makerAddress | - // | | 0x040 | | 3. takerAddress | - // | | 0x060 | | 4. feeRecipientAddress | - // | | 0x080 | | 5. makerAssetAmount | - // | | 0x0A0 | | 6. takerAssetAmount | - // | | 0x0C0 | | 7. makerFeeAmount | - // | | 0x0E0 | | 8. takerFeeAmount | - // | | 0x100 | | 9. expirationTimeSeconds | - // | | 0x120 | | 10. salt | - // | | 0x140 | | 11. Offset to makerAssetData (*) | - // | | 0x160 | | 12. Offset to takerAssetData (*) | - // | | 0x180 | 32 | makerAssetData Length | - // | | 0x1A0 | ** | makerAssetData Contents | - // | | 0x1C0 | 32 | takerAssetData Length | - // | | 0x1E0 | ** | takerAssetData Contents | - // | | 0x200 | 32 | signature Length | - // | | 0x220 | ** | signature Contents | - - // * Offsets are calculated from the beginning of the current area: Header, Params, Data: - // An offset stored in the Params area is calculated from the beginning of the Params section. - // An offset stored in the Data area is calculated from the beginning of the Data section. - - // ** The length of dynamic array contents are stored in the field immediately preceeding the contents. - - // [1]: https://solidity.readthedocs.io/en/develop/abi-spec.html - - assembly { - - // Areas below may use the following variables: - // 1. Start -- Start of this area in memory - // 2. End -- End of this area in memory. This value may - // be precomputed (before writing contents), - // or it may be computed as contents are written. - // 3. Offset -- Current offset into area. If an area's End - // is precomputed, this variable tracks the - // offsets of contents as they are written. - - /////// Setup Header Area /////// - // Load free memory pointer - fillOrderCalldata := mload(0x40) - // bytes4(keccak256("fillOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)")) - // = 0xb4be83d5 - // Leave 0x20 bytes to store the length - mstore(add(fillOrderCalldata, 0x20), 0xb4be83d500000000000000000000000000000000000000000000000000000000) - let headerAreaEnd := add(fillOrderCalldata, 0x24) - - /////// Setup Params Area /////// - // This area is preallocated and written to later. - // This is because we need to fill in offsets that have not yet been calculated. - let paramsAreaStart := headerAreaEnd - let paramsAreaEnd := add(paramsAreaStart, 0x60) - let paramsAreaOffset := paramsAreaStart - - /////// Setup Data Area /////// - let dataAreaStart := paramsAreaEnd - let dataAreaEnd := dataAreaStart - - // Offset from the source data we're reading from - let sourceOffset := order - // arrayLenBytes and arrayLenWords track the length of a dynamically-allocated bytes array. - let arrayLenBytes := 0 - let arrayLenWords := 0 - - /////// Write order Struct /////// - // Write memory location of Order, relative to the start of the - // parameter list, then increment the paramsAreaOffset respectively. - mstore(paramsAreaOffset, sub(dataAreaEnd, paramsAreaStart)) - paramsAreaOffset := add(paramsAreaOffset, 0x20) - - // Write values for each field in the order - // It would be nice to use a loop, but we save on gas by writing - // the stores sequentially. - mstore(dataAreaEnd, mload(sourceOffset)) // makerAddress - mstore(add(dataAreaEnd, 0x20), mload(add(sourceOffset, 0x20))) // takerAddress - mstore(add(dataAreaEnd, 0x40), mload(add(sourceOffset, 0x40))) // feeRecipientAddress - mstore(add(dataAreaEnd, 0x60), mload(add(sourceOffset, 0x60))) // senderAddress - mstore(add(dataAreaEnd, 0x80), mload(add(sourceOffset, 0x80))) // makerAssetAmount - mstore(add(dataAreaEnd, 0xA0), mload(add(sourceOffset, 0xA0))) // takerAssetAmount - mstore(add(dataAreaEnd, 0xC0), mload(add(sourceOffset, 0xC0))) // makerFeeAmount - mstore(add(dataAreaEnd, 0xE0), mload(add(sourceOffset, 0xE0))) // takerFeeAmount - mstore(add(dataAreaEnd, 0x100), mload(add(sourceOffset, 0x100))) // expirationTimeSeconds - mstore(add(dataAreaEnd, 0x120), mload(add(sourceOffset, 0x120))) // salt - mstore(add(dataAreaEnd, 0x140), mload(add(sourceOffset, 0x140))) // Offset to makerAssetData - mstore(add(dataAreaEnd, 0x160), mload(add(sourceOffset, 0x160))) // Offset to takerAssetData - dataAreaEnd := add(dataAreaEnd, 0x180) - sourceOffset := add(sourceOffset, 0x180) - - // Write offset to - mstore(add(dataAreaStart, mul(10, 0x20)), sub(dataAreaEnd, dataAreaStart)) - - // Calculate length of - sourceOffset := mload(add(order, 0x140)) // makerAssetData - arrayLenBytes := mload(sourceOffset) - sourceOffset := add(sourceOffset, 0x20) - arrayLenWords := div(add(arrayLenBytes, 0x1F), 0x20) - - // Write length of - mstore(dataAreaEnd, arrayLenBytes) - dataAreaEnd := add(dataAreaEnd, 0x20) - - // Write contents of - for {let i := 0} lt(i, arrayLenWords) {i := add(i, 1)} { - mstore(dataAreaEnd, mload(sourceOffset)) - dataAreaEnd := add(dataAreaEnd, 0x20) - sourceOffset := add(sourceOffset, 0x20) - } - - // Write offset to - mstore(add(dataAreaStart, mul(11, 0x20)), sub(dataAreaEnd, dataAreaStart)) - - // Calculate length of - sourceOffset := mload(add(order, 0x160)) // takerAssetData - arrayLenBytes := mload(sourceOffset) - sourceOffset := add(sourceOffset, 0x20) - arrayLenWords := div(add(arrayLenBytes, 0x1F), 0x20) - - // Write length of - mstore(dataAreaEnd, arrayLenBytes) - dataAreaEnd := add(dataAreaEnd, 0x20) - - // Write contents of - for {let i := 0} lt(i, arrayLenWords) {i := add(i, 1)} { - mstore(dataAreaEnd, mload(sourceOffset)) - dataAreaEnd := add(dataAreaEnd, 0x20) - sourceOffset := add(sourceOffset, 0x20) - } - - /////// Write takerAssetFillAmount /////// - mstore(paramsAreaOffset, takerAssetFillAmount) - paramsAreaOffset := add(paramsAreaOffset, 0x20) - - /////// Write signature /////// - // Write offset to paramsArea - mstore(paramsAreaOffset, sub(dataAreaEnd, paramsAreaStart)) - - // Calculate length of signature - sourceOffset := signature - arrayLenBytes := mload(sourceOffset) - sourceOffset := add(sourceOffset, 0x20) - arrayLenWords := div(add(arrayLenBytes, 0x1F), 0x20) - - // Write length of signature - mstore(dataAreaEnd, arrayLenBytes) - dataAreaEnd := add(dataAreaEnd, 0x20) - - // Write contents of signature - for {let i := 0} lt(i, arrayLenWords) {i := add(i, 1)} { - mstore(dataAreaEnd, mload(sourceOffset)) - dataAreaEnd := add(dataAreaEnd, 0x20) - sourceOffset := add(sourceOffset, 0x20) - } - - // Set length of calldata - mstore(fillOrderCalldata, sub(dataAreaEnd, add(fillOrderCalldata, 0x20))) - - // Increment free memory pointer - mstore(0x40, dataAreaEnd) - } - - return fillOrderCalldata; - } -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibConstants.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibConstants.sol deleted file mode 100644 index 8d2732cd3..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibConstants.sol +++ /dev/null @@ -1,49 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - - -// solhint-disable max-line-length -contract LibConstants { - - // Asset data for ZRX token. Used for fee transfers. - // @TODO: Hardcode constant when we deploy. Currently - // not constant to make testing easier. - - // The proxyId for ZRX_ASSET_DATA is bytes4(keccak256("ERC20Token(address)")) = 0xf47261b0 - - // Kovan ZRX address is 0x6ff6c0ff1d68b964901f986d4c9fa3ac68346570. - // The ABI encoded proxyId and address is 0xf47261b00000000000000000000000006ff6c0ff1d68b964901f986d4c9fa3ac68346570 - // bytes constant public ZRX_ASSET_DATA = "\xf4\x72\x61\xb0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x6f\xf6\xc0\xff\x1d\x68\xb9\x64\x90\x1f\x98\x6d\x4c\x9f\xa3\xac\x68\x34\x65\x70"; - - // Mainnet ZRX address is 0xe41d2489571d322189246dafa5ebde1f4699f498. - // The ABI encoded proxyId and address is 0xf47261b0000000000000000000000000e41d2489571d322189246dafa5ebde1f4699f498 - // bytes constant public ZRX_ASSET_DATA = "\xf4\x72\x61\xb0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xe4\x1d\x24\x89\x57\x1d\x32\x21\x89\x24\x6d\xaf\xa5\xeb\xde\x1f\x46\x99\xf4\x98"; - - // solhint-disable-next-line var-name-mixedcase - bytes public ZRX_ASSET_DATA; - - // @TODO: Remove when we deploy. - constructor (bytes memory zrxAssetData) - public - { - ZRX_ASSET_DATA = zrxAssetData; - } -} -// solhint-enable max-line-length diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibEIP712.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibEIP712.sol deleted file mode 100644 index 203edc1fd..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibEIP712.sol +++ /dev/null @@ -1,87 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - - -contract LibEIP712 { - - // EIP191 header for EIP712 prefix - string constant internal EIP191_HEADER = "\x19\x01"; - - // EIP712 Domain Name value - string constant internal EIP712_DOMAIN_NAME = "0x Protocol"; - - // EIP712 Domain Version value - string constant internal EIP712_DOMAIN_VERSION = "2"; - - // Hash of the EIP712 Domain Separator Schema - bytes32 constant internal EIP712_DOMAIN_SEPARATOR_SCHEMA_HASH = keccak256(abi.encodePacked( - "EIP712Domain(", - "string name,", - "string version,", - "address verifyingContract", - ")" - )); - - // Hash of the EIP712 Domain Separator data - // solhint-disable-next-line var-name-mixedcase - bytes32 public EIP712_DOMAIN_HASH; - - constructor () - public - { - EIP712_DOMAIN_HASH = keccak256(abi.encodePacked( - EIP712_DOMAIN_SEPARATOR_SCHEMA_HASH, - keccak256(bytes(EIP712_DOMAIN_NAME)), - keccak256(bytes(EIP712_DOMAIN_VERSION)), - bytes32(address(this)) - )); - } - - /// @dev Calculates EIP712 encoding for a hash struct in this EIP712 Domain. - /// @param hashStruct The EIP712 hash struct. - /// @return EIP712 hash applied to this EIP712 Domain. - function hashEIP712Message(bytes32 hashStruct) - internal - view - returns (bytes32 result) - { - bytes32 eip712DomainHash = EIP712_DOMAIN_HASH; - - // Assembly for more efficient computing: - // keccak256(abi.encodePacked( - // EIP191_HEADER, - // EIP712_DOMAIN_HASH, - // hashStruct - // )); - - assembly { - // Load free memory pointer - let memPtr := mload(64) - - mstore(memPtr, 0x1901000000000000000000000000000000000000000000000000000000000000) // EIP191 header - mstore(add(memPtr, 2), eip712DomainHash) // EIP712 domain hash - mstore(add(memPtr, 34), hashStruct) // Hash of struct - - // Compute hash - result := keccak256(memPtr, 66) - } - return result; - } -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibExchangeErrors.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibExchangeErrors.sol deleted file mode 100644 index a0f75bc06..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibExchangeErrors.sol +++ /dev/null @@ -1,70 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -// solhint-disable -pragma solidity 0.4.24; - - -/// @dev This contract documents the revert reasons used in the Exchange contract. -/// This contract is intended to serve as a reference, but is not actually used for efficiency reasons. -contract LibExchangeErrors { - - /// Order validation errors /// - string constant ORDER_UNFILLABLE = "ORDER_UNFILLABLE"; // Order cannot be filled. - string constant INVALID_MAKER = "INVALID_MAKER"; // Invalid makerAddress. - string constant INVALID_TAKER = "INVALID_TAKER"; // Invalid takerAddress. - string constant INVALID_SENDER = "INVALID_SENDER"; // Invalid `msg.sender`. - string constant INVALID_ORDER_SIGNATURE = "INVALID_ORDER_SIGNATURE"; // Signature validation failed. - - /// fillOrder validation errors /// - string constant INVALID_TAKER_AMOUNT = "INVALID_TAKER_AMOUNT"; // takerAssetFillAmount cannot equal 0. - string constant ROUNDING_ERROR = "ROUNDING_ERROR"; // Rounding error greater than 0.1% of takerAssetFillAmount. - - /// Signature validation errors /// - string constant INVALID_SIGNATURE = "INVALID_SIGNATURE"; // Signature validation failed. - string constant SIGNATURE_ILLEGAL = "SIGNATURE_ILLEGAL"; // Signature type is illegal. - string constant SIGNATURE_UNSUPPORTED = "SIGNATURE_UNSUPPORTED"; // Signature type unsupported. - - /// cancelOrdersUptTo errors /// - string constant INVALID_NEW_ORDER_EPOCH = "INVALID_NEW_ORDER_EPOCH"; // Specified salt must be greater than or equal to existing orderEpoch. - - /// fillOrKillOrder errors /// - string constant COMPLETE_FILL_FAILED = "COMPLETE_FILL_FAILED"; // Desired takerAssetFillAmount could not be completely filled. - - /// matchOrders errors /// - string constant NEGATIVE_SPREAD_REQUIRED = "NEGATIVE_SPREAD_REQUIRED"; // Matched orders must have a negative spread. - - /// Transaction errors /// - string constant REENTRANCY_ILLEGAL = "REENTRANCY_ILLEGAL"; // Recursive reentrancy is not allowed. - string constant INVALID_TX_HASH = "INVALID_TX_HASH"; // Transaction has already been executed. - string constant INVALID_TX_SIGNATURE = "INVALID_TX_SIGNATURE"; // Signature validation failed. - string constant FAILED_EXECUTION = "FAILED_EXECUTION"; // Transaction execution failed. - - /// registerAssetProxy errors /// - string constant ASSET_PROXY_ALREADY_EXISTS = "ASSET_PROXY_ALREADY_EXISTS"; // AssetProxy with same id already exists. - - /// dispatchTransferFrom errors /// - string constant ASSET_PROXY_DOES_NOT_EXIST = "ASSET_PROXY_DOES_NOT_EXIST"; // No assetProxy registered at given id. - string constant TRANSFER_FAILED = "TRANSFER_FAILED"; // Asset transfer unsuccesful. - - /// Length validation errors /// - string constant LENGTH_GREATER_THAN_0_REQUIRED = "LENGTH_GREATER_THAN_0_REQUIRED"; // Byte array must have a length greater than 0. - string constant LENGTH_GREATER_THAN_3_REQUIRED = "LENGTH_GREATER_THAN_3_REQUIRED"; // Byte array must have a length greater than 3. - string constant LENGTH_0_REQUIRED = "LENGTH_0_REQUIRED"; // Byte array must have a length of 0. - string constant LENGTH_65_REQUIRED = "LENGTH_65_REQUIRED"; // Byte array must have a length of 65. -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibFillResults.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibFillResults.sol deleted file mode 100644 index 659ae9a69..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibFillResults.sol +++ /dev/null @@ -1,53 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../../utils/SafeMath/SafeMath.sol"; - - -contract LibFillResults is - SafeMath -{ - struct FillResults { - uint256 makerAssetFilledAmount; // Total amount of makerAsset(s) filled. - uint256 takerAssetFilledAmount; // Total amount of takerAsset(s) filled. - uint256 makerFeePaid; // Total amount of ZRX paid by maker(s) to feeRecipient(s). - uint256 takerFeePaid; // Total amount of ZRX paid by taker to feeRecipients(s). - } - - struct MatchedFillResults { - FillResults left; // Amounts filled and fees paid of left order. - FillResults right; // Amounts filled and fees paid of right order. - uint256 leftMakerAssetSpreadAmount; // Spread between price of left and right order, denominated in the left order's makerAsset, paid to taker. - } - - /// @dev Adds properties of both FillResults instances. - /// Modifies the first FillResults instance specified. - /// @param totalFillResults Fill results instance that will be added onto. - /// @param singleFillResults Fill results instance that will be added to totalFillResults. - function addFillResults(FillResults memory totalFillResults, FillResults memory singleFillResults) - internal - pure - { - totalFillResults.makerAssetFilledAmount = safeAdd(totalFillResults.makerAssetFilledAmount, singleFillResults.makerAssetFilledAmount); - totalFillResults.takerAssetFilledAmount = safeAdd(totalFillResults.takerAssetFilledAmount, singleFillResults.takerAssetFilledAmount); - totalFillResults.makerFeePaid = safeAdd(totalFillResults.makerFeePaid, singleFillResults.makerFeePaid); - totalFillResults.takerFeePaid = safeAdd(totalFillResults.takerFeePaid, singleFillResults.takerFeePaid); - } -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol deleted file mode 100644 index c0b85ea10..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol +++ /dev/null @@ -1,253 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../../utils/SafeMath/SafeMath.sol"; - - -contract LibMath is - SafeMath -{ - /// @dev Calculates partial value given a numerator and denominator rounded down. - /// Reverts if rounding error is >= 0.1% - /// @param numerator Numerator. - /// @param denominator Denominator. - /// @param target Value to calculate partial of. - /// @return Partial value of target rounded down. - function safeGetPartialAmountFloor( - uint256 numerator, - uint256 denominator, - uint256 target - ) - internal - pure - returns (uint256 partialAmount) - { - require( - denominator > 0, - "DIVISION_BY_ZERO" - ); - - require( - !isRoundingErrorFloor( - numerator, - denominator, - target - ), - "ROUNDING_ERROR" - ); - - partialAmount = safeDiv( - safeMul(numerator, target), - denominator - ); - return partialAmount; - } - - /// @dev Calculates partial value given a numerator and denominator rounded down. - /// Reverts if rounding error is >= 0.1% - /// @param numerator Numerator. - /// @param denominator Denominator. - /// @param target Value to calculate partial of. - /// @return Partial value of target rounded up. - function safeGetPartialAmountCeil( - uint256 numerator, - uint256 denominator, - uint256 target - ) - internal - pure - returns (uint256 partialAmount) - { - require( - denominator > 0, - "DIVISION_BY_ZERO" - ); - - require( - !isRoundingErrorCeil( - numerator, - denominator, - target - ), - "ROUNDING_ERROR" - ); - - // safeDiv computes `floor(a / b)`. We use the identity (a, b integer): - // ceil(a / b) = floor((a + b - 1) / b) - // To implement `ceil(a / b)` using safeDiv. - partialAmount = safeDiv( - safeAdd( - safeMul(numerator, target), - safeSub(denominator, 1) - ), - denominator - ); - return partialAmount; - } - - /// @dev Calculates partial value given a numerator and denominator rounded down. - /// @param numerator Numerator. - /// @param denominator Denominator. - /// @param target Value to calculate partial of. - /// @return Partial value of target rounded down. - function getPartialAmountFloor( - uint256 numerator, - uint256 denominator, - uint256 target - ) - internal - pure - returns (uint256 partialAmount) - { - require( - denominator > 0, - "DIVISION_BY_ZERO" - ); - - partialAmount = safeDiv( - safeMul(numerator, target), - denominator - ); - return partialAmount; - } - - /// @dev Calculates partial value given a numerator and denominator rounded down. - /// @param numerator Numerator. - /// @param denominator Denominator. - /// @param target Value to calculate partial of. - /// @return Partial value of target rounded up. - function getPartialAmountCeil( - uint256 numerator, - uint256 denominator, - uint256 target - ) - internal - pure - returns (uint256 partialAmount) - { - require( - denominator > 0, - "DIVISION_BY_ZERO" - ); - - // safeDiv computes `floor(a / b)`. We use the identity (a, b integer): - // ceil(a / b) = floor((a + b - 1) / b) - // To implement `ceil(a / b)` using safeDiv. - partialAmount = safeDiv( - safeAdd( - safeMul(numerator, target), - safeSub(denominator, 1) - ), - denominator - ); - return partialAmount; - } - - /// @dev Checks if rounding error >= 0.1% when rounding down. - /// @param numerator Numerator. - /// @param denominator Denominator. - /// @param target Value to multiply with numerator/denominator. - /// @return Rounding error is present. - function isRoundingErrorFloor( - uint256 numerator, - uint256 denominator, - uint256 target - ) - internal - pure - returns (bool isError) - { - require( - denominator > 0, - "DIVISION_BY_ZERO" - ); - - // The absolute rounding error is the difference between the rounded - // value and the ideal value. The relative rounding error is the - // absolute rounding error divided by the absolute value of the - // ideal value. This is undefined when the ideal value is zero. - // - // The ideal value is `numerator * target / denominator`. - // Let's call `numerator * target % denominator` the remainder. - // The absolute error is `remainder / denominator`. - // - // When the ideal value is zero, we require the absolute error to - // be zero. Fortunately, this is always the case. The ideal value is - // zero iff `numerator == 0` and/or `target == 0`. In this case the - // remainder and absolute error are also zero. - if (target == 0 || numerator == 0) { - return false; - } - - // Otherwise, we want the relative rounding error to be strictly - // less than 0.1%. - // The relative error is `remainder / (numerator * target)`. - // We want the relative error less than 1 / 1000: - // remainder / (numerator * denominator) < 1 / 1000 - // or equivalently: - // 1000 * remainder < numerator * target - // so we have a rounding error iff: - // 1000 * remainder >= numerator * target - uint256 remainder = mulmod( - target, - numerator, - denominator - ); - isError = safeMul(1000, remainder) >= safeMul(numerator, target); - return isError; - } - - /// @dev Checks if rounding error >= 0.1% when rounding up. - /// @param numerator Numerator. - /// @param denominator Denominator. - /// @param target Value to multiply with numerator/denominator. - /// @return Rounding error is present. - function isRoundingErrorCeil( - uint256 numerator, - uint256 denominator, - uint256 target - ) - internal - pure - returns (bool isError) - { - require( - denominator > 0, - "DIVISION_BY_ZERO" - ); - - // See the comments in `isRoundingError`. - if (target == 0 || numerator == 0) { - // When either is zero, the ideal value and rounded value are zero - // and there is no rounding error. (Although the relative error - // is undefined.) - return false; - } - // Compute remainder as before - uint256 remainder = mulmod( - target, - numerator, - denominator - ); - remainder = safeSub(denominator, remainder) % denominator; - isError = safeMul(1000, remainder) >= safeMul(numerator, target); - return isError; - } -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibOrder.sol b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibOrder.sol deleted file mode 100644 index 0fe7c2161..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibOrder.sol +++ /dev/null @@ -1,145 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "./LibEIP712.sol"; - - -contract LibOrder is - LibEIP712 -{ - // Hash for the EIP712 Order Schema - bytes32 constant internal EIP712_ORDER_SCHEMA_HASH = keccak256(abi.encodePacked( - "Order(", - "address makerAddress,", - "address takerAddress,", - "address feeRecipientAddress,", - "address senderAddress,", - "uint256 makerAssetAmount,", - "uint256 takerAssetAmount,", - "uint256 makerFee,", - "uint256 takerFee,", - "uint256 expirationTimeSeconds,", - "uint256 salt,", - "bytes makerAssetData,", - "bytes takerAssetData", - ")" - )); - - // A valid order remains fillable until it is expired, fully filled, or cancelled. - // An order's state is unaffected by external factors, like account balances. - enum OrderStatus { - INVALID, // Default value - INVALID_MAKER_ASSET_AMOUNT, // Order does not have a valid maker asset amount - INVALID_TAKER_ASSET_AMOUNT, // Order does not have a valid taker asset amount - FILLABLE, // Order is fillable - EXPIRED, // Order has already expired - FULLY_FILLED, // Order is fully filled - CANCELLED // Order has been cancelled - } - - // solhint-disable max-line-length - struct Order { - address makerAddress; // Address that created the order. - address takerAddress; // Address that is allowed to fill the order. If set to 0, any address is allowed to fill the order. - address feeRecipientAddress; // Address that will recieve fees when order is filled. - address senderAddress; // Address that is allowed to call Exchange contract methods that affect this order. If set to 0, any address is allowed to call these methods. - uint256 makerAssetAmount; // Amount of makerAsset being offered by maker. Must be greater than 0. - uint256 takerAssetAmount; // Amount of takerAsset being bid on by maker. Must be greater than 0. - uint256 makerFee; // Amount of ZRX paid to feeRecipient by maker when order is filled. If set to 0, no transfer of ZRX from maker to feeRecipient will be attempted. - uint256 takerFee; // Amount of ZRX paid to feeRecipient by taker when order is filled. If set to 0, no transfer of ZRX from taker to feeRecipient will be attempted. - uint256 expirationTimeSeconds; // Timestamp in seconds at which order expires. - uint256 salt; // Arbitrary number to facilitate uniqueness of the order's hash. - bytes makerAssetData; // Encoded data that can be decoded by a specified proxy contract when transferring makerAsset. The last byte references the id of this proxy. - bytes takerAssetData; // Encoded data that can be decoded by a specified proxy contract when transferring takerAsset. The last byte references the id of this proxy. - } - // solhint-enable max-line-length - - struct OrderInfo { - uint8 orderStatus; // Status that describes order's validity and fillability. - bytes32 orderHash; // EIP712 hash of the order (see LibOrder.getOrderHash). - uint256 orderTakerAssetFilledAmount; // Amount of order that has already been filled. - } - - /// @dev Calculates Keccak-256 hash of the order. - /// @param order The order structure. - /// @return Keccak-256 EIP712 hash of the order. - function getOrderHash(Order memory order) - internal - view - returns (bytes32 orderHash) - { - orderHash = hashEIP712Message(hashOrder(order)); - return orderHash; - } - - /// @dev Calculates EIP712 hash of the order. - /// @param order The order structure. - /// @return EIP712 hash of the order. - function hashOrder(Order memory order) - internal - pure - returns (bytes32 result) - { - bytes32 schemaHash = EIP712_ORDER_SCHEMA_HASH; - bytes32 makerAssetDataHash = keccak256(order.makerAssetData); - bytes32 takerAssetDataHash = keccak256(order.takerAssetData); - - // Assembly for more efficiently computing: - // keccak256(abi.encodePacked( - // EIP712_ORDER_SCHEMA_HASH, - // bytes32(order.makerAddress), - // bytes32(order.takerAddress), - // bytes32(order.feeRecipientAddress), - // bytes32(order.senderAddress), - // order.makerAssetAmount, - // order.takerAssetAmount, - // order.makerFee, - // order.takerFee, - // order.expirationTimeSeconds, - // order.salt, - // keccak256(order.makerAssetData), - // keccak256(order.takerAssetData) - // )); - - assembly { - // Calculate memory addresses that will be swapped out before hashing - let pos1 := sub(order, 32) - let pos2 := add(order, 320) - let pos3 := add(order, 352) - - // Backup - let temp1 := mload(pos1) - let temp2 := mload(pos2) - let temp3 := mload(pos3) - - // Hash in place - mstore(pos1, schemaHash) - mstore(pos2, makerAssetDataHash) - mstore(pos3, takerAssetDataHash) - result := keccak256(pos1, 416) - - // Restore - mstore(pos1, temp1) - mstore(pos2, temp2) - mstore(pos3, temp3) - } - return result; - } -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MAssetProxyDispatcher.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MAssetProxyDispatcher.sol deleted file mode 100644 index 0ddfca270..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MAssetProxyDispatcher.sol +++ /dev/null @@ -1,45 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../interfaces/IAssetProxyDispatcher.sol"; - - -contract MAssetProxyDispatcher is - IAssetProxyDispatcher -{ - // Logs registration of new asset proxy - event AssetProxyRegistered( - bytes4 id, // Id of new registered AssetProxy. - address assetProxy // Address of new registered AssetProxy. - ); - - /// @dev Forwards arguments to assetProxy and calls `transferFrom`. Either succeeds or throws. - /// @param assetData Byte array encoded for the asset. - /// @param from Address to transfer token from. - /// @param to Address to transfer token to. - /// @param amount Amount of token to transfer. - function dispatchTransferFrom( - bytes memory assetData, - address from, - address to, - uint256 amount - ) - internal; -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol deleted file mode 100644 index 742499568..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol +++ /dev/null @@ -1,157 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "../libs/LibOrder.sol"; -import "../libs/LibFillResults.sol"; -import "../interfaces/IExchangeCore.sol"; - - -contract MExchangeCore is - IExchangeCore -{ - // Fill event is emitted whenever an order is filled. - event Fill( - address indexed makerAddress, // Address that created the order. - address indexed feeRecipientAddress, // Address that received fees. - address takerAddress, // Address that filled the order. - address senderAddress, // Address that called the Exchange contract (msg.sender). - uint256 makerAssetFilledAmount, // Amount of makerAsset sold by maker and bought by taker. - uint256 takerAssetFilledAmount, // Amount of takerAsset sold by taker and bought by maker. - uint256 makerFeePaid, // Amount of ZRX paid to feeRecipient by maker. - uint256 takerFeePaid, // Amount of ZRX paid to feeRecipient by taker. - bytes32 indexed orderHash, // EIP712 hash of order (see LibOrder.getOrderHash). - bytes makerAssetData, // Encoded data specific to makerAsset. - bytes takerAssetData // Encoded data specific to takerAsset. - ); - - // Cancel event is emitted whenever an individual order is cancelled. - event Cancel( - address indexed makerAddress, // Address that created the order. - address indexed feeRecipientAddress, // Address that would have recieved fees if order was filled. - address senderAddress, // Address that called the Exchange contract (msg.sender). - bytes32 indexed orderHash, // EIP712 hash of order (see LibOrder.getOrderHash). - bytes makerAssetData, // Encoded data specific to makerAsset. - bytes takerAssetData // Encoded data specific to takerAsset. - ); - - // CancelUpTo event is emitted whenever `cancelOrdersUpTo` is executed succesfully. - event CancelUpTo( - address indexed makerAddress, // Orders cancelled must have been created by this address. - address indexed senderAddress, // Orders cancelled must have a `senderAddress` equal to this address. - uint256 orderEpoch // Orders with specified makerAddress and senderAddress with a salt less than this value are considered cancelled. - ); - - /// @dev Fills the input order. - /// @param order Order struct containing order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param signature Proof that order has been created by maker. - /// @return Amounts filled and fees paid by maker and taker. - function fillOrderInternal( - LibOrder.Order memory order, - uint256 takerAssetFillAmount, - bytes memory signature - ) - internal - returns (LibFillResults.FillResults memory fillResults); - - /// @dev After calling, the order can not be filled anymore. - /// @param order Order struct containing order specifications. - function cancelOrderInternal(LibOrder.Order memory order) - internal; - - /// @dev Updates state with results of a fill order. - /// @param order that was filled. - /// @param takerAddress Address of taker who filled the order. - /// @param orderTakerAssetFilledAmount Amount of order already filled. - /// @return fillResults Amounts filled and fees paid by maker and taker. - function updateFilledState( - LibOrder.Order memory order, - address takerAddress, - bytes32 orderHash, - uint256 orderTakerAssetFilledAmount, - LibFillResults.FillResults memory fillResults - ) - internal; - - /// @dev Updates state with results of cancelling an order. - /// State is only updated if the order is currently fillable. - /// Otherwise, updating state would have no effect. - /// @param order that was cancelled. - /// @param orderHash Hash of order that was cancelled. - function updateCancelledState( - LibOrder.Order memory order, - bytes32 orderHash - ) - internal; - - /// @dev Validates context for fillOrder. Succeeds or throws. - /// @param order to be filled. - /// @param orderInfo OrderStatus, orderHash, and amount already filled of order. - /// @param takerAddress Address of order taker. - /// @param signature Proof that the orders was created by its maker. - function assertFillableOrder( - LibOrder.Order memory order, - LibOrder.OrderInfo memory orderInfo, - address takerAddress, - bytes memory signature - ) - internal - view; - - /// @dev Validates context for fillOrder. Succeeds or throws. - /// @param order to be filled. - /// @param orderInfo Status, orderHash, and amount already filled of order. - /// @param takerAssetFillAmount Desired amount of order to fill by taker. - /// @param takerAssetFilledAmount Amount of takerAsset that will be filled. - /// @param makerAssetFilledAmount Amount of makerAsset that will be transfered. - function assertValidFill( - LibOrder.Order memory order, - LibOrder.OrderInfo memory orderInfo, - uint256 takerAssetFillAmount, - uint256 takerAssetFilledAmount, - uint256 makerAssetFilledAmount - ) - internal - view; - - /// @dev Validates context for cancelOrder. Succeeds or throws. - /// @param order to be cancelled. - /// @param orderInfo OrderStatus, orderHash, and amount already filled of order. - function assertValidCancel( - LibOrder.Order memory order, - LibOrder.OrderInfo memory orderInfo - ) - internal - view; - - /// @dev Calculates amounts filled and fees paid by maker and taker. - /// @param order to be filled. - /// @param takerAssetFilledAmount Amount of takerAsset that will be filled. - /// @return fillResults Amounts filled and fees paid by maker and taker. - function calculateFillResults( - LibOrder.Order memory order, - uint256 takerAssetFilledAmount - ) - internal - pure - returns (LibFillResults.FillResults memory fillResults); - -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MMatchOrders.sol deleted file mode 100644 index 96fa34bc0..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MMatchOrders.sol +++ /dev/null @@ -1,58 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "../libs/LibOrder.sol"; -import "../libs/LibFillResults.sol"; -import "../interfaces/IMatchOrders.sol"; - - -contract MMatchOrders is - IMatchOrders -{ - /// @dev Validates context for matchOrders. Succeeds or throws. - /// @param leftOrder First order to match. - /// @param rightOrder Second order to match. - function assertValidMatch( - LibOrder.Order memory leftOrder, - LibOrder.Order memory rightOrder - ) - internal - pure; - - /// @dev Calculates fill amounts for the matched orders. - /// Each order is filled at their respective price point. However, the calculations are - /// carried out as though the orders are both being filled at the right order's price point. - /// The profit made by the leftOrder order goes to the taker (who matched the two orders). - /// @param leftOrder First order to match. - /// @param rightOrder Second order to match. - /// @param leftOrderTakerAssetFilledAmount Amount of left order already filled. - /// @param rightOrderTakerAssetFilledAmount Amount of right order already filled. - /// @param matchedFillResults Amounts to fill and fees to pay by maker and taker of matched orders. - function calculateMatchedFillResults( - LibOrder.Order memory leftOrder, - LibOrder.Order memory rightOrder, - uint256 leftOrderTakerAssetFilledAmount, - uint256 rightOrderTakerAssetFilledAmount - ) - internal - pure - returns (LibFillResults.MatchedFillResults memory matchedFillResults); - -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol deleted file mode 100644 index 1fe88b908..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol +++ /dev/null @@ -1,75 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../interfaces/ISignatureValidator.sol"; - - -contract MSignatureValidator is - ISignatureValidator -{ - event SignatureValidatorApproval( - address indexed signerAddress, // Address that approves or disapproves a contract to verify signatures. - address indexed validatorAddress, // Address of signature validator contract. - bool approved // Approval or disapproval of validator contract. - ); - - // Allowed signature types. - enum SignatureType { - Illegal, // 0x00, default value - Invalid, // 0x01 - EIP712, // 0x02 - EthSign, // 0x03 - Wallet, // 0x04 - Validator, // 0x05 - PreSigned, // 0x06 - NSignatureTypes // 0x07, number of signature types. Always leave at end. - } - - /// @dev Verifies signature using logic defined by Wallet contract. - /// @param hash Any 32 byte hash. - /// @param walletAddress Address that should have signed the given hash - /// and defines its own signature verification method. - /// @param signature Proof that the hash has been signed by signer. - /// @return True if the address recovered from the provided signature matches the input signer address. - function isValidWalletSignature( - bytes32 hash, - address walletAddress, - bytes signature - ) - internal - view - returns (bool isValid); - - /// @dev Verifies signature using logic defined by Validator contract. - /// @param validatorAddress Address of validator contract. - /// @param hash Any 32 byte hash. - /// @param signerAddress Address that should have signed the given hash. - /// @param signature Proof that the hash has been signed by signer. - /// @return True if the address recovered from the provided signature matches the input signer address. - function isValidValidatorSignature( - address validatorAddress, - bytes32 hash, - address signerAddress, - bytes signature - ) - internal - view - returns (bool isValid); -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MTransactions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MTransactions.sol deleted file mode 100644 index 4f61a4945..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MTransactions.sol +++ /dev/null @@ -1,58 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ -pragma solidity 0.4.24; - -import "../interfaces/ITransactions.sol"; - - -contract MTransactions is - ITransactions -{ - // Hash for the EIP712 ZeroEx Transaction Schema - bytes32 constant internal EIP712_ZEROEX_TRANSACTION_SCHEMA_HASH = keccak256(abi.encodePacked( - "ZeroExTransaction(", - "uint256 salt,", - "address signerAddress,", - "bytes data", - ")" - )); - - /// @dev Calculates EIP712 hash of the Transaction. - /// @param salt Arbitrary number to ensure uniqueness of transaction hash. - /// @param signerAddress Address of transaction signer. - /// @param data AbiV2 encoded calldata. - /// @return EIP712 hash of the Transaction. - function hashZeroExTransaction( - uint256 salt, - address signerAddress, - bytes memory data - ) - internal - pure - returns (bytes32 result); - - /// @dev The current function will be called in the context of this address (either 0x transaction signer or `msg.sender`). - /// If calling a fill function, this address will represent the taker. - /// If calling a cancel function, this address will represent the maker. - /// @return Signer of 0x transaction if entry point is `executeTransaction`. - /// `msg.sender` if entry point is any other function. - function getCurrentContextAddress() - internal - view - returns (address); -} diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MWrapperFunctions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MWrapperFunctions.sol deleted file mode 100644 index 4adfbde01..000000000 --- a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MWrapperFunctions.sol +++ /dev/null @@ -1,41 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "../libs/LibOrder.sol"; -import "../libs/LibFillResults.sol"; -import "../interfaces/IWrapperFunctions.sol"; - - -contract MWrapperFunctions is - IWrapperFunctions -{ - /// @dev Fills the input order. Reverts if exact takerAssetFillAmount not filled. - /// @param order LibOrder.Order struct containing order specifications. - /// @param takerAssetFillAmount Desired amount of takerAsset to sell. - /// @param signature Proof that order has been created by maker. - function fillOrKillOrderInternal( - LibOrder.Order memory order, - uint256 takerAssetFillAmount, - bytes memory signature - ) - internal - returns (LibFillResults.FillResults memory fillResults); -} diff --git a/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyERC20Token.sol b/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyERC20Token.sol deleted file mode 100644 index 412c5d1ad..000000000 --- a/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyERC20Token.sol +++ /dev/null @@ -1,77 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../utils/Ownable/Ownable.sol"; -import "../../tokens/ERC20Token/MintableERC20Token.sol"; - - -contract DummyERC20Token is - Ownable, - MintableERC20Token -{ - string public name; - string public symbol; - uint256 public decimals; - uint256 public constant MAX_MINT_AMOUNT = 10000000000000000000000; - - constructor ( - string _name, - string _symbol, - uint256 _decimals, - uint256 _totalSupply - ) - public - { - name = _name; - symbol = _symbol; - decimals = _decimals; - _totalSupply = _totalSupply; - balances[msg.sender] = _totalSupply; - } - - /// @dev Sets the balance of target address - /// @param _target Address or which balance will be updated - /// @param _value New balance of target address - function setBalance(address _target, uint256 _value) - external - onlyOwner - { - uint256 currBalance = balances[_target]; - if (_value < currBalance) { - _totalSupply = safeSub(_totalSupply, safeSub(currBalance, _value)); - } else { - _totalSupply = safeAdd(_totalSupply, safeSub(_value, currBalance)); - } - balances[_target] = _value; - } - - /// @dev Mints new tokens for sender - /// @param _value Amount of tokens to mint - function mint(uint256 _value) - external - { - require( - _value <= MAX_MINT_AMOUNT, - "VALUE_TOO_LARGE" - ); - - _mint(msg.sender, _value); - } -} diff --git a/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyMultipleReturnERC20Token.sol b/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyMultipleReturnERC20Token.sol deleted file mode 100644 index 733d4437e..000000000 --- a/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyMultipleReturnERC20Token.sol +++ /dev/null @@ -1,69 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "./DummyERC20Token.sol"; - - -// solhint-disable no-empty-blocks -contract DummyMultipleReturnERC20Token is - DummyERC20Token -{ - constructor ( - string _name, - string _symbol, - uint256 _decimals, - uint256 _totalSupply - ) - public - DummyERC20Token( - _name, - _symbol, - _decimals, - _totalSupply - ) - {} - - /// @dev send `value` token to `to` from `from` on the condition it is approved by `from` - /// @param _from The address of the sender - /// @param _to The address of the recipient - /// @param _value The amount of token to be transferred - function transferFrom( - address _from, - address _to, - uint256 _value - ) - external - returns (bool) - { - emit Transfer( - _from, - _to, - _value - ); - - // HACK: This contract will not compile if we remove `returns (bool)`, so we manually return 64 bytes (equiavalent to true, true) - assembly { - mstore(0, 1) - mstore(32, 1) - return(0, 64) - } - } -} - diff --git a/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyNoReturnERC20Token.sol b/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyNoReturnERC20Token.sol deleted file mode 100644 index e16825a16..000000000 --- a/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyNoReturnERC20Token.sol +++ /dev/null @@ -1,115 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "./DummyERC20Token.sol"; - - -// solhint-disable no-empty-blocks -contract DummyNoReturnERC20Token is - DummyERC20Token -{ - constructor ( - string _name, - string _symbol, - uint256 _decimals, - uint256 _totalSupply - ) - public - DummyERC20Token( - _name, - _symbol, - _decimals, - _totalSupply - ) - {} - - /// @dev send `value` token to `to` from `msg.sender` - /// @param _to The address of the recipient - /// @param _value The amount of token to be transferred - function transfer(address _to, uint256 _value) - external - returns (bool) - { - require( - balances[msg.sender] >= _value, - "ERC20_INSUFFICIENT_BALANCE" - ); - require( - balances[_to] + _value >= balances[_to], - "UINT256_OVERFLOW" - ); - - balances[msg.sender] -= _value; - balances[_to] += _value; - - emit Transfer( - msg.sender, - _to, - _value - ); - - // HACK: This contract will not compile if we remove `returns (bool)`, so we manually return no data - assembly { - return(0, 0) - } - } - - /// @dev send `value` token to `to` from `from` on the condition it is approved by `from` - /// @param _from The address of the sender - /// @param _to The address of the recipient - /// @param _value The amount of token to be transferred - function transferFrom( - address _from, - address _to, - uint256 _value - ) - external - returns (bool) - { - require( - balances[_from] >= _value, - "ERC20_INSUFFICIENT_BALANCE" - ); - require( - allowed[_from][msg.sender] >= _value, - "ERC20_INSUFFICIENT_ALLOWANCE" - ); - require( - balances[_to] + _value >= balances[_to], - "UINT256_OVERFLOW" - ); - - balances[_to] += _value; - balances[_from] -= _value; - allowed[_from][msg.sender] -= _value; - - emit Transfer( - _from, - _to, - _value - ); - - // HACK: This contract will not compile if we remove `returns (bool)`, so we manually return no data - assembly { - return(0, 0) - } - } -} - diff --git a/packages/contracts/src/2.0.0/test/DummyERC721Receiver/DummyERC721Receiver.sol b/packages/contracts/src/2.0.0/test/DummyERC721Receiver/DummyERC721Receiver.sol deleted file mode 100644 index 6c8371559..000000000 --- a/packages/contracts/src/2.0.0/test/DummyERC721Receiver/DummyERC721Receiver.sol +++ /dev/null @@ -1,67 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../tokens/ERC721Token/IERC721Receiver.sol"; - - -contract DummyERC721Receiver is - IERC721Receiver -{ - // Function selector for ERC721Receiver.onERC721Received - // 0x150b7a02 - bytes4 constant internal ERC721_RECEIVED = bytes4(keccak256("onERC721Received(address,address,uint256,bytes)")); - - event TokenReceived( - address operator, - address from, - uint256 tokenId, - bytes data - ); - - /// @notice Handle the receipt of an NFT - /// @dev The ERC721 smart contract calls this function on the recipient - /// after a `transfer`. This function MAY throw to revert and reject the - /// transfer. Return of other than the magic value MUST result in the - /// transaction being reverted. - /// Note: the contract address is always the message sender. - /// @param _operator The address which called `safeTransferFrom` function - /// @param _from The address which previously owned the token - /// @param _tokenId The NFT identifier which is being transferred - /// @param _data Additional data with no specified format - /// @return `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))` - /// unless throwing - function onERC721Received( - address _operator, - address _from, - uint256 _tokenId, - bytes _data - ) - external - returns (bytes4) - { - emit TokenReceived( - _operator, - _from, - _tokenId, - _data - ); - return ERC721_RECEIVED; - } -} diff --git a/packages/contracts/src/2.0.0/test/DummyERC721Receiver/InvalidERC721Receiver.sol b/packages/contracts/src/2.0.0/test/DummyERC721Receiver/InvalidERC721Receiver.sol deleted file mode 100644 index 309633bf5..000000000 --- a/packages/contracts/src/2.0.0/test/DummyERC721Receiver/InvalidERC721Receiver.sol +++ /dev/null @@ -1,66 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../tokens/ERC721Token/IERC721Receiver.sol"; - - -contract InvalidERC721Receiver is - IERC721Receiver -{ - // Actual function signature is `onERC721Received(address,address,uint256,bytes)` - bytes4 constant internal INVALID_ERC721_RECEIVED = bytes4(keccak256("onERC721Received(address,uint256,bytes)")); - - event TokenReceived( - address operator, - address from, - uint256 tokenId, - bytes data - ); - - /// @notice Handle the receipt of an NFT - /// @dev The ERC721 smart contract calls this function on the recipient - /// after a `transfer`. This function MAY throw to revert and reject the - /// transfer. Return of other than the magic value MUST result in the - /// transaction being reverted. - /// Note: the contract address is always the message sender. - /// @param _operator The address which called `safeTransferFrom` function - /// @param _from The address which previously owned the token - /// @param _tokenId The NFT identifier which is being transferred - /// @param _data Additional data with no specified format - /// @return `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))` - /// unless throwing - function onERC721Received( - address _operator, - address _from, - uint256 _tokenId, - bytes _data - ) - external - returns (bytes4) - { - emit TokenReceived( - _operator, - _from, - _tokenId, - _data - ); - return INVALID_ERC721_RECEIVED; - } -} diff --git a/packages/contracts/src/2.0.0/test/DummyERC721Token/DummyERC721Token.sol b/packages/contracts/src/2.0.0/test/DummyERC721Token/DummyERC721Token.sol deleted file mode 100644 index ac9068d1d..000000000 --- a/packages/contracts/src/2.0.0/test/DummyERC721Token/DummyERC721Token.sol +++ /dev/null @@ -1,63 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../tokens/ERC721Token/MintableERC721Token.sol"; -import "../../utils/Ownable/Ownable.sol"; - - -// solhint-disable no-empty-blocks -contract DummyERC721Token is - Ownable, - MintableERC721Token -{ - string public name; - string public symbol; - - constructor ( - string _name, - string _symbol - ) - public - { - name = _name; - symbol = _symbol; - } - - /// @dev Function to mint a new token - /// Reverts if the given token ID already exists - /// @param _to Address of the beneficiary that will own the minted token - /// @param _tokenId ID of the token to be minted by the msg.sender - function mint(address _to, uint256 _tokenId) - external - { - _mint(_to, _tokenId); - } - - /// @dev Function to burn a token - /// Reverts if the given token ID doesn't exist or not called by contract owner - /// @param _owner Owner of token with given token ID - /// @param _tokenId ID of the token to be burned by the msg.sender - function burn(address _owner, uint256 _tokenId) - external - onlyOwner - { - _burn(_owner, _tokenId); - } -} diff --git a/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol b/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol deleted file mode 100644 index 99dd47a78..000000000 --- a/packages/contracts/src/2.0.0/test/ReentrantERC20Token/ReentrantERC20Token.sol +++ /dev/null @@ -1,188 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "../../utils/LibBytes/LibBytes.sol"; -import "../../tokens/ERC20Token/ERC20Token.sol"; -import "../../protocol/Exchange/interfaces/IExchange.sol"; -import "../../protocol/Exchange/libs/LibOrder.sol"; - - -// solhint-disable no-unused-vars -contract ReentrantERC20Token is - ERC20Token -{ - using LibBytes for bytes; - - // solhint-disable-next-line var-name-mixedcase - IExchange internal EXCHANGE; - - bytes internal constant REENTRANCY_ILLEGAL_REVERT_REASON = abi.encodeWithSelector( - bytes4(keccak256("Error(string)")), - "REENTRANCY_ILLEGAL" - ); - - // All of these functions are potentially vulnerable to reentrancy - // We do not test any "noThrow" functions because `fillOrderNoThrow` makes a delegatecall to `fillOrder` - enum ExchangeFunction { - FILL_ORDER, - FILL_OR_KILL_ORDER, - BATCH_FILL_ORDERS, - BATCH_FILL_OR_KILL_ORDERS, - MARKET_BUY_ORDERS, - MARKET_SELL_ORDERS, - MATCH_ORDERS, - CANCEL_ORDER, - BATCH_CANCEL_ORDERS, - CANCEL_ORDERS_UP_TO, - SET_SIGNATURE_VALIDATOR_APPROVAL - } - - uint8 internal currentFunctionId = 0; - - constructor (address _exchange) - public - { - EXCHANGE = IExchange(_exchange); - } - - /// @dev Set the current function that will be called when `transferFrom` is called. - /// @param _currentFunctionId Id that corresponds to function name. - function setCurrentFunction(uint8 _currentFunctionId) - external - { - currentFunctionId = _currentFunctionId; - } - - /// @dev A version of `transferFrom` that attempts to reenter the Exchange contract. - /// @param _from The address of the sender - /// @param _to The address of the recipient - /// @param _value The amount of token to be transferred - function transferFrom( - address _from, - address _to, - uint256 _value - ) - external - returns (bool) - { - // This order would normally be invalid, but it will be used strictly for testing reentrnacy. - // Any reentrancy checks will happen before any other checks that invalidate the order. - LibOrder.Order memory order; - - // Initialize remaining null parameters - bytes memory signature; - LibOrder.Order[] memory orders; - uint256[] memory takerAssetFillAmounts; - bytes[] memory signatures; - bytes memory calldata; - - // Create calldata for function that corresponds to currentFunctionId - if (currentFunctionId == uint8(ExchangeFunction.FILL_ORDER)) { - calldata = abi.encodeWithSelector( - EXCHANGE.fillOrder.selector, - order, - 0, - signature - ); - } else if (currentFunctionId == uint8(ExchangeFunction.FILL_OR_KILL_ORDER)) { - calldata = abi.encodeWithSelector( - EXCHANGE.fillOrKillOrder.selector, - order, - 0, - signature - ); - } else if (currentFunctionId == uint8(ExchangeFunction.BATCH_FILL_ORDERS)) { - calldata = abi.encodeWithSelector( - EXCHANGE.batchFillOrders.selector, - orders, - takerAssetFillAmounts, - signatures - ); - } else if (currentFunctionId == uint8(ExchangeFunction.BATCH_FILL_OR_KILL_ORDERS)) { - calldata = abi.encodeWithSelector( - EXCHANGE.batchFillOrKillOrders.selector, - orders, - takerAssetFillAmounts, - signatures - ); - } else if (currentFunctionId == uint8(ExchangeFunction.MARKET_BUY_ORDERS)) { - calldata = abi.encodeWithSelector( - EXCHANGE.marketBuyOrders.selector, - orders, - 0, - signatures - ); - } else if (currentFunctionId == uint8(ExchangeFunction.MARKET_SELL_ORDERS)) { - calldata = abi.encodeWithSelector( - EXCHANGE.marketSellOrders.selector, - orders, - 0, - signatures - ); - } else if (currentFunctionId == uint8(ExchangeFunction.MATCH_ORDERS)) { - calldata = abi.encodeWithSelector( - EXCHANGE.matchOrders.selector, - order, - order, - signature, - signature - ); - } else if (currentFunctionId == uint8(ExchangeFunction.CANCEL_ORDER)) { - calldata = abi.encodeWithSelector( - EXCHANGE.cancelOrder.selector, - order - ); - } else if (currentFunctionId == uint8(ExchangeFunction.BATCH_CANCEL_ORDERS)) { - calldata = abi.encodeWithSelector( - EXCHANGE.batchCancelOrders.selector, - orders - ); - } else if (currentFunctionId == uint8(ExchangeFunction.CANCEL_ORDERS_UP_TO)) { - calldata = abi.encodeWithSelector( - EXCHANGE.cancelOrdersUpTo.selector, - 0 - ); - } else if (currentFunctionId == uint8(ExchangeFunction.SET_SIGNATURE_VALIDATOR_APPROVAL)) { - calldata = abi.encodeWithSelector( - EXCHANGE.setSignatureValidatorApproval.selector, - address(0), - false - ); - } - - // Call Exchange function, swallow error - address(EXCHANGE).call(calldata); - - // Revert reason is 100 bytes - bytes memory returnData = new bytes(100); - - // Copy return data - assembly { - returndatacopy(add(returnData, 32), 0, 100) - } - - // Revert if function reverted with REENTRANCY_ILLEGAL error - require(!REENTRANCY_ILLEGAL_REVERT_REASON.equals(returnData)); - - // Transfer will return true if function failed for any other reason - return true; - } -} \ No newline at end of file diff --git a/packages/contracts/src/2.0.0/test/TestAssetProxyDispatcher/TestAssetProxyDispatcher.sol b/packages/contracts/src/2.0.0/test/TestAssetProxyDispatcher/TestAssetProxyDispatcher.sol deleted file mode 100644 index ad71fc9a1..000000000 --- a/packages/contracts/src/2.0.0/test/TestAssetProxyDispatcher/TestAssetProxyDispatcher.sol +++ /dev/null @@ -1,37 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../protocol/Exchange/MixinAssetProxyDispatcher.sol"; - - -contract TestAssetProxyDispatcher is - MixinAssetProxyDispatcher -{ - function publicDispatchTransferFrom( - bytes memory assetData, - address from, - address to, - uint256 amount - ) - public - { - dispatchTransferFrom(assetData, from, to, amount); - } -} diff --git a/packages/contracts/src/2.0.0/test/TestAssetProxyOwner/TestAssetProxyOwner.sol b/packages/contracts/src/2.0.0/test/TestAssetProxyOwner/TestAssetProxyOwner.sol deleted file mode 100644 index 52c66cb56..000000000 --- a/packages/contracts/src/2.0.0/test/TestAssetProxyOwner/TestAssetProxyOwner.sol +++ /dev/null @@ -1,58 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../protocol/AssetProxyOwner/AssetProxyOwner.sol"; - - -// solhint-disable no-empty-blocks -contract TestAssetProxyOwner is - AssetProxyOwner -{ - constructor ( - address[] memory _owners, - address[] memory _assetProxyContracts, - uint256 _required, - uint256 _secondsTimeLocked - ) - public - AssetProxyOwner(_owners, _assetProxyContracts, _required, _secondsTimeLocked) - {} - - function testValidRemoveAuthorizedAddressAtIndexTx(uint256 id) - public - view - validRemoveAuthorizedAddressAtIndexTx(id) - returns (bool) - { - // Do nothing. We expect reverts through the modifier - return true; - } - - /// @dev Compares first 4 bytes of byte array to `removeAuthorizedAddressAtIndex` function selector. - /// @param data Transaction data. - /// @return Successful if data is a call to `removeAuthorizedAddressAtIndex`. - function isFunctionRemoveAuthorizedAddressAtIndex(bytes memory data) - public - pure - returns (bool) - { - return data.readBytes4(0) == REMOVE_AUTHORIZED_ADDRESS_AT_INDEX_SELECTOR; - } -} diff --git a/packages/contracts/src/2.0.0/test/TestConstants/TestConstants.sol b/packages/contracts/src/2.0.0/test/TestConstants/TestConstants.sol deleted file mode 100644 index 1275d007b..000000000 --- a/packages/contracts/src/2.0.0/test/TestConstants/TestConstants.sol +++ /dev/null @@ -1,57 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../utils/LibBytes/LibBytes.sol"; - - -// solhint-disable max-line-length -contract TestConstants { - - using LibBytes for bytes; - - bytes4 constant internal ERC20_PROXY_ID = bytes4(keccak256("ERC20Token(address)")); - - address constant internal KOVAN_ZRX_ADDRESS = 0x6Ff6C0Ff1d68b964901F986d4C9FA3ac68346570; - bytes constant internal KOVAN_ZRX_ASSET_DATA = "\xf4\x72\x61\xb0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x6f\xf6\xc0\xff\x1d\x68\xb9\x64\x90\x1f\x98\x6d\x4c\x9f\xa3\xac\x68\x34\x65\x70"; - - address constant internal MAINNET_ZRX_ADDRESS = 0xE41d2489571d322189246DaFA5ebDe1F4699F498; - bytes constant public MAINNET_ZRX_ASSET_DATA = "\xf4\x72\x61\xb0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xe4\x1d\x24\x89\x57\x1d\x32\x21\x89\x24\x6d\xaf\xa5\xeb\xde\x1f\x46\x99\xf4\x98"; - - function assertValidZrxAssetData() - public - pure - returns (bool) - { - bytes memory kovanZrxAssetData = abi.encodeWithSelector(ERC20_PROXY_ID, KOVAN_ZRX_ADDRESS); - require( - kovanZrxAssetData.equals(KOVAN_ZRX_ASSET_DATA), - "INVALID_KOVAN_ZRX_ASSET_DATA" - ); - - bytes memory mainetZrxAssetData = abi.encodeWithSelector(ERC20_PROXY_ID, MAINNET_ZRX_ADDRESS); - require( - mainetZrxAssetData.equals(MAINNET_ZRX_ASSET_DATA), - "INVALID_MAINNET_ZRX_ASSET_DATA" - ); - - return true; - } -} -// solhint-enable max-line-length \ No newline at end of file diff --git a/packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol b/packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol deleted file mode 100644 index 27187f8f8..000000000 --- a/packages/contracts/src/2.0.0/test/TestExchangeInternals/TestExchangeInternals.sol +++ /dev/null @@ -1,191 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "../../protocol/Exchange/Exchange.sol"; - - -// solhint-disable no-empty-blocks -contract TestExchangeInternals is - Exchange -{ - constructor () - public - Exchange("") - {} - - /// @dev Adds properties of both FillResults instances. - /// Modifies the first FillResults instance specified. - /// Note that this function has been modified from the original - // internal version to return the FillResults. - /// @param totalFillResults Fill results instance that will be added onto. - /// @param singleFillResults Fill results instance that will be added to totalFillResults. - /// @return newTotalFillResults The result of adding singleFillResults to totalFilResults. - function publicAddFillResults(FillResults memory totalFillResults, FillResults memory singleFillResults) - public - pure - returns (FillResults memory) - { - addFillResults(totalFillResults, singleFillResults); - return totalFillResults; - } - - /// @dev Calculates amounts filled and fees paid by maker and taker. - /// @param order to be filled. - /// @param takerAssetFilledAmount Amount of takerAsset that will be filled. - /// @return fillResults Amounts filled and fees paid by maker and taker. - function publicCalculateFillResults( - Order memory order, - uint256 takerAssetFilledAmount - ) - public - pure - returns (FillResults memory fillResults) - { - return calculateFillResults(order, takerAssetFilledAmount); - } - - /// @dev Calculates partial value given a numerator and denominator. - /// Reverts if rounding error is >= 0.1% - /// @param numerator Numerator. - /// @param denominator Denominator. - /// @param target Value to calculate partial of. - /// @return Partial value of target. - function publicSafeGetPartialAmountFloor( - uint256 numerator, - uint256 denominator, - uint256 target - ) - public - pure - returns (uint256 partialAmount) - { - return safeGetPartialAmountFloor(numerator, denominator, target); - } - - /// @dev Calculates partial value given a numerator and denominator. - /// Reverts if rounding error is >= 0.1% - /// @param numerator Numerator. - /// @param denominator Denominator. - /// @param target Value to calculate partial of. - /// @return Partial value of target. - function publicSafeGetPartialAmountCeil( - uint256 numerator, - uint256 denominator, - uint256 target - ) - public - pure - returns (uint256 partialAmount) - { - return safeGetPartialAmountCeil(numerator, denominator, target); - } - - /// @dev Calculates partial value given a numerator and denominator. - /// @param numerator Numerator. - /// @param denominator Denominator. - /// @param target Value to calculate partial of. - /// @return Partial value of target. - function publicGetPartialAmountFloor( - uint256 numerator, - uint256 denominator, - uint256 target - ) - public - pure - returns (uint256 partialAmount) - { - return getPartialAmountFloor(numerator, denominator, target); - } - - /// @dev Calculates partial value given a numerator and denominator. - /// @param numerator Numerator. - /// @param denominator Denominator. - /// @param target Value to calculate partial of. - /// @return Partial value of target. - function publicGetPartialAmountCeil( - uint256 numerator, - uint256 denominator, - uint256 target - ) - public - pure - returns (uint256 partialAmount) - { - return getPartialAmountCeil(numerator, denominator, target); - } - - /// @dev Checks if rounding error >= 0.1%. - /// @param numerator Numerator. - /// @param denominator Denominator. - /// @param target Value to multiply with numerator/denominator. - /// @return Rounding error is present. - function publicIsRoundingErrorFloor( - uint256 numerator, - uint256 denominator, - uint256 target - ) - public - pure - returns (bool isError) - { - return isRoundingErrorFloor(numerator, denominator, target); - } - - /// @dev Checks if rounding error >= 0.1%. - /// @param numerator Numerator. - /// @param denominator Denominator. - /// @param target Value to multiply with numerator/denominator. - /// @return Rounding error is present. - function publicIsRoundingErrorCeil( - uint256 numerator, - uint256 denominator, - uint256 target - ) - public - pure - returns (bool isError) - { - return isRoundingErrorCeil(numerator, denominator, target); - } - - /// @dev Updates state with results of a fill order. - /// @param order that was filled. - /// @param takerAddress Address of taker who filled the order. - /// @param orderTakerAssetFilledAmount Amount of order already filled. - /// @return fillResults Amounts filled and fees paid by maker and taker. - function publicUpdateFilledState( - Order memory order, - address takerAddress, - bytes32 orderHash, - uint256 orderTakerAssetFilledAmount, - FillResults memory fillResults - ) - public - { - updateFilledState( - order, - takerAddress, - orderHash, - orderTakerAssetFilledAmount, - fillResults - ); - } -} diff --git a/packages/contracts/src/2.0.0/test/TestLibBytes/TestLibBytes.sol b/packages/contracts/src/2.0.0/test/TestLibBytes/TestLibBytes.sol deleted file mode 100644 index 00d861e61..000000000 --- a/packages/contracts/src/2.0.0/test/TestLibBytes/TestLibBytes.sol +++ /dev/null @@ -1,269 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../utils/LibBytes/LibBytes.sol"; - - -contract TestLibBytes { - - using LibBytes for bytes; - - /// @dev Pops the last byte off of a byte array by modifying its length. - /// @param b Byte array that will be modified. - /// @return The byte that was popped off. - function publicPopLastByte(bytes memory b) - public - pure - returns (bytes memory, bytes1 result) - { - result = b.popLastByte(); - return (b, result); - } - - /// @dev Pops the last 20 bytes off of a byte array by modifying its length. - /// @param b Byte array that will be modified. - /// @return The 20 byte address that was popped off. - function publicPopLast20Bytes(bytes memory b) - public - pure - returns (bytes memory, address result) - { - result = b.popLast20Bytes(); - return (b, result); - } - - /// @dev Tests equality of two byte arrays. - /// @param lhs First byte array to compare. - /// @param rhs Second byte array to compare. - /// @return True if arrays are the same. False otherwise. - function publicEquals(bytes memory lhs, bytes memory rhs) - public - pure - returns (bool equal) - { - equal = lhs.equals(rhs); - return equal; - } - - function publicEqualsPop1(bytes memory lhs, bytes memory rhs) - public - pure - returns (bool equal) - { - lhs.popLastByte(); - rhs.popLastByte(); - equal = lhs.equals(rhs); - return equal; - } - - /// @dev Performs a deep copy of a byte array onto another byte array of greater than or equal length. - /// @param dest Byte array that will be overwritten with source bytes. - /// @param source Byte array to copy onto dest bytes. - function publicDeepCopyBytes( - bytes memory dest, - bytes memory source - ) - public - pure - returns (bytes memory) - { - LibBytes.deepCopyBytes(dest, source); - return dest; - } - - /// @dev Reads an address from a position in a byte array. - /// @param b Byte array containing an address. - /// @param index Index in byte array of address. - /// @return address from byte array. - function publicReadAddress( - bytes memory b, - uint256 index - ) - public - pure - returns (address result) - { - result = b.readAddress(index); - return result; - } - - /// @dev Writes an address into a specific position in a byte array. - /// @param b Byte array to insert address into. - /// @param index Index in byte array of address. - /// @param input Address to put into byte array. - function publicWriteAddress( - bytes memory b, - uint256 index, - address input - ) - public - pure - returns (bytes memory) - { - b.writeAddress(index, input); - return b; - } - - /// @dev Reads a bytes32 value from a position in a byte array. - /// @param b Byte array containing a bytes32 value. - /// @param index Index in byte array of bytes32 value. - /// @return bytes32 value from byte array. - function publicReadBytes32( - bytes memory b, - uint256 index - ) - public - pure - returns (bytes32 result) - { - result = b.readBytes32(index); - return result; - } - - /// @dev Writes a bytes32 into a specific position in a byte array. - /// @param b Byte array to insert into. - /// @param index Index in byte array of . - /// @param input bytes32 to put into byte array. - function publicWriteBytes32( - bytes memory b, - uint256 index, - bytes32 input - ) - public - pure - returns (bytes memory) - { - b.writeBytes32(index, input); - return b; - } - - /// @dev Reads a uint256 value from a position in a byte array. - /// @param b Byte array containing a uint256 value. - /// @param index Index in byte array of uint256 value. - /// @return uint256 value from byte array. - function publicReadUint256( - bytes memory b, - uint256 index - ) - public - pure - returns (uint256 result) - { - result = b.readUint256(index); - return result; - } - - /// @dev Writes a uint256 into a specific position in a byte array. - /// @param b Byte array to insert into. - /// @param index Index in byte array of . - /// @param input uint256 to put into byte array. - function publicWriteUint256( - bytes memory b, - uint256 index, - uint256 input - ) - public - pure - returns (bytes memory) - { - b.writeUint256(index, input); - return b; - } - - /// @dev Reads an unpadded bytes4 value from a position in a byte array. - /// @param b Byte array containing a bytes4 value. - /// @param index Index in byte array of bytes4 value. - /// @return bytes4 value from byte array. - function publicReadBytes4( - bytes memory b, - uint256 index - ) - public - pure - returns (bytes4 result) - { - result = b.readBytes4(index); - return result; - } - - /// @dev Reads nested bytes from a specific position. - /// @param b Byte array containing nested bytes. - /// @param index Index of nested bytes. - /// @return result Nested bytes. - function publicReadBytesWithLength( - bytes memory b, - uint256 index - ) - public - pure - returns (bytes memory result) - { - result = b.readBytesWithLength(index); - return result; - } - - /// @dev Inserts bytes at a specific position in a byte array. - /// @param b Byte array to insert into. - /// @param index Index in byte array of . - /// @param input bytes to insert. - /// @return b Updated input byte array - function publicWriteBytesWithLength( - bytes memory b, - uint256 index, - bytes memory input - ) - public - pure - returns (bytes memory) - { - b.writeBytesWithLength(index, input); - return b; - } - - /// @dev Copies a block of memory from one location to another. - /// @param mem Memory contents we want to apply memCopy to - /// @param dest Destination offset into . - /// @param source Source offset into . - /// @param length Length of bytes to copy from to - /// @return mem Memory contents after calling memCopy. - function testMemcpy( - bytes mem, - uint256 dest, - uint256 source, - uint256 length - ) - public // not external, we need input in memory - pure - returns (bytes) - { - // Sanity check. Overflows are not checked. - require(source + length <= mem.length); - require(dest + length <= mem.length); - - // Get pointer to memory contents - uint256 offset = mem.contentAddress(); - - // Execute memCopy adjusted for memory array location - LibBytes.memCopy(offset + dest, offset + source, length); - - // Return modified memory contents - return mem; - } -} diff --git a/packages/contracts/src/2.0.0/test/TestLibs/TestLibs.sol b/packages/contracts/src/2.0.0/test/TestLibs/TestLibs.sol deleted file mode 100644 index a10f981fc..000000000 --- a/packages/contracts/src/2.0.0/test/TestLibs/TestLibs.sol +++ /dev/null @@ -1,152 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; -pragma experimental ABIEncoderV2; - -import "../../protocol/Exchange/libs/LibMath.sol"; -import "../../protocol/Exchange/libs/LibOrder.sol"; -import "../../protocol/Exchange/libs/LibFillResults.sol"; -import "../../protocol/Exchange/libs/LibAbiEncoder.sol"; - - -contract TestLibs is - LibMath, - LibOrder, - LibFillResults, - LibAbiEncoder -{ - function publicAbiEncodeFillOrder( - Order memory order, - uint256 takerAssetFillAmount, - bytes memory signature - ) - public - pure - returns (bytes memory fillOrderCalldata) - { - fillOrderCalldata = abiEncodeFillOrder( - order, - takerAssetFillAmount, - signature - ); - return fillOrderCalldata; - } - - function publicGetPartialAmountFloor( - uint256 numerator, - uint256 denominator, - uint256 target - ) - public - pure - returns (uint256 partialAmount) - { - partialAmount = getPartialAmountFloor( - numerator, - denominator, - target - ); - return partialAmount; - } - - function publicGetPartialAmountCeil( - uint256 numerator, - uint256 denominator, - uint256 target - ) - public - pure - returns (uint256 partialAmount) - { - partialAmount = getPartialAmountCeil( - numerator, - denominator, - target - ); - return partialAmount; - } - - function publicIsRoundingErrorFloor( - uint256 numerator, - uint256 denominator, - uint256 target - ) - public - pure - returns (bool isError) - { - isError = isRoundingErrorFloor( - numerator, - denominator, - target - ); - return isError; - } - - function publicIsRoundingErrorCeil( - uint256 numerator, - uint256 denominator, - uint256 target - ) - public - pure - returns (bool isError) - { - isError = isRoundingErrorCeil( - numerator, - denominator, - target - ); - return isError; - } - - function publicGetOrderHash(Order memory order) - public - view - returns (bytes32 orderHash) - { - orderHash = getOrderHash(order); - return orderHash; - } - - function getOrderSchemaHash() - public - pure - returns (bytes32) - { - return EIP712_ORDER_SCHEMA_HASH; - } - - function getDomainSeparatorSchemaHash() - public - pure - returns (bytes32) - { - return EIP712_DOMAIN_SEPARATOR_SCHEMA_HASH; - } - - function publicAddFillResults(FillResults memory totalFillResults, FillResults memory singleFillResults) - public - pure - returns (FillResults memory) - { - addFillResults(totalFillResults, singleFillResults); - return totalFillResults; - } -} diff --git a/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol b/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol deleted file mode 100644 index ea3e2de59..000000000 --- a/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol +++ /dev/null @@ -1,45 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../protocol/Exchange/MixinSignatureValidator.sol"; -import "../../protocol/Exchange/MixinTransactions.sol"; - - -contract TestSignatureValidator is - MixinSignatureValidator, - MixinTransactions -{ - function publicIsValidSignature( - bytes32 hash, - address signer, - bytes memory signature - ) - public - view - returns (bool isValid) - { - isValid = isValidSignature( - hash, - signer, - signature - ); - return isValid; - } -} diff --git a/packages/contracts/src/2.0.0/test/TestStaticCallReceiver/TestStaticCallReceiver.sol b/packages/contracts/src/2.0.0/test/TestStaticCallReceiver/TestStaticCallReceiver.sol deleted file mode 100644 index 41aab01c8..000000000 --- a/packages/contracts/src/2.0.0/test/TestStaticCallReceiver/TestStaticCallReceiver.sol +++ /dev/null @@ -1,81 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../tokens/ERC20Token/IERC20Token.sol"; - - -// solhint-disable no-unused-vars -contract TestStaticCallReceiver { - - uint256 internal state = 1; - - /// @dev Updates state and returns true. Intended to be used with `Validator` signature type. - /// @param hash Message hash that is signed. - /// @param signerAddress Address that should have signed the given hash. - /// @param signature Proof of signing. - /// @return Validity of order signature. - function isValidSignature( - bytes32 hash, - address signerAddress, - bytes signature - ) - external - returns (bool isValid) - { - updateState(); - return true; - } - - /// @dev Updates state and returns true. Intended to be used with `Wallet` signature type. - /// @param hash Message hash that is signed. - /// @param signature Proof of signing. - /// @return Validity of order signature. - function isValidSignature( - bytes32 hash, - bytes signature - ) - external - returns (bool isValid) - { - updateState(); - return true; - } - - /// @dev Approves an ERC20 token to spend tokens from this address. - /// @param token Address of ERC20 token. - /// @param spender Address that will spend tokens. - /// @param value Amount of tokens spender is approved to spend. - function approveERC20( - address token, - address spender, - uint256 value - ) - external - { - IERC20Token(token).approve(spender, value); - } - - /// @dev Increments state variable. - function updateState() - internal - { - state++; - } -} diff --git a/packages/contracts/src/2.0.0/tokens/ERC20Token/ERC20Token.sol b/packages/contracts/src/2.0.0/tokens/ERC20Token/ERC20Token.sol deleted file mode 100644 index 725d304df..000000000 --- a/packages/contracts/src/2.0.0/tokens/ERC20Token/ERC20Token.sol +++ /dev/null @@ -1,148 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "./IERC20Token.sol"; - - -contract ERC20Token is - IERC20Token -{ - mapping (address => uint256) internal balances; - mapping (address => mapping (address => uint256)) internal allowed; - - uint256 internal _totalSupply; - - /// @dev send `value` token to `to` from `msg.sender` - /// @param _to The address of the recipient - /// @param _value The amount of token to be transferred - /// @return True if transfer was successful - function transfer(address _to, uint256 _value) - external - returns (bool) - { - require( - balances[msg.sender] >= _value, - "ERC20_INSUFFICIENT_BALANCE" - ); - require( - balances[_to] + _value >= balances[_to], - "UINT256_OVERFLOW" - ); - - balances[msg.sender] -= _value; - balances[_to] += _value; - - emit Transfer( - msg.sender, - _to, - _value - ); - - return true; - } - - /// @dev send `value` token to `to` from `from` on the condition it is approved by `from` - /// @param _from The address of the sender - /// @param _to The address of the recipient - /// @param _value The amount of token to be transferred - /// @return True if transfer was successful - function transferFrom( - address _from, - address _to, - uint256 _value - ) - external - returns (bool) - { - require( - balances[_from] >= _value, - "ERC20_INSUFFICIENT_BALANCE" - ); - require( - allowed[_from][msg.sender] >= _value, - "ERC20_INSUFFICIENT_ALLOWANCE" - ); - require( - balances[_to] + _value >= balances[_to], - "UINT256_OVERFLOW" - ); - - balances[_to] += _value; - balances[_from] -= _value; - allowed[_from][msg.sender] -= _value; - - emit Transfer( - _from, - _to, - _value - ); - - return true; - } - - /// @dev `msg.sender` approves `_spender` to spend `_value` tokens - /// @param _spender The address of the account able to transfer the tokens - /// @param _value The amount of wei to be approved for transfer - /// @return Always true if the call has enough gas to complete execution - function approve(address _spender, uint256 _value) - external - returns (bool) - { - allowed[msg.sender][_spender] = _value; - emit Approval( - msg.sender, - _spender, - _value - ); - return true; - } - - /// @dev Query total supply of token - /// @return Total supply of token - function totalSupply() - external - view - returns (uint256) - { - return _totalSupply; - } - - /// @dev Query the balance of owner - /// @param _owner The address from which the balance will be retrieved - /// @return Balance of owner - function balanceOf(address _owner) - external - view - returns (uint256) - { - return balances[_owner]; - } - - /// @param _owner The address of the account owning tokens - /// @param _spender The address of the account able to transfer the tokens - /// @return Amount of remaining tokens allowed to spent - function allowance(address _owner, address _spender) - external - view - returns (uint256) - { - return allowed[_owner][_spender]; - } -} diff --git a/packages/contracts/src/2.0.0/tokens/ERC20Token/IERC20Token.sol b/packages/contracts/src/2.0.0/tokens/ERC20Token/IERC20Token.sol deleted file mode 100644 index 258d47393..000000000 --- a/packages/contracts/src/2.0.0/tokens/ERC20Token/IERC20Token.sol +++ /dev/null @@ -1,87 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - - -contract IERC20Token { - - // solhint-disable no-simple-event-func-name - event Transfer( - address indexed _from, - address indexed _to, - uint256 _value - ); - - event Approval( - address indexed _owner, - address indexed _spender, - uint256 _value - ); - - /// @dev send `value` token to `to` from `msg.sender` - /// @param _to The address of the recipient - /// @param _value The amount of token to be transferred - /// @return True if transfer was successful - function transfer(address _to, uint256 _value) - external - returns (bool); - - /// @dev send `value` token to `to` from `from` on the condition it is approved by `from` - /// @param _from The address of the sender - /// @param _to The address of the recipient - /// @param _value The amount of token to be transferred - /// @return True if transfer was successful - function transferFrom( - address _from, - address _to, - uint256 _value - ) - external - returns (bool); - - /// @dev `msg.sender` approves `_spender` to spend `_value` tokens - /// @param _spender The address of the account able to transfer the tokens - /// @param _value The amount of wei to be approved for transfer - /// @return Always true if the call has enough gas to complete execution - function approve(address _spender, uint256 _value) - external - returns (bool); - - /// @dev Query total supply of token - /// @return Total supply of token - function totalSupply() - external - view - returns (uint256); - - /// @param _owner The address from which the balance will be retrieved - /// @return Balance of owner - function balanceOf(address _owner) - external - view - returns (uint256); - - /// @param _owner The address of the account owning tokens - /// @param _spender The address of the account able to transfer the tokens - /// @return Amount of remaining tokens allowed to spent - function allowance(address _owner, address _spender) - external - view - returns (uint256); -} diff --git a/packages/contracts/src/2.0.0/tokens/ERC20Token/MintableERC20Token.sol b/packages/contracts/src/2.0.0/tokens/ERC20Token/MintableERC20Token.sol deleted file mode 100644 index 9dc924422..000000000 --- a/packages/contracts/src/2.0.0/tokens/ERC20Token/MintableERC20Token.sol +++ /dev/null @@ -1,60 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../utils/SafeMath/SafeMath.sol"; -import "./UnlimitedAllowanceERC20Token.sol"; - - -contract MintableERC20Token is - SafeMath, - UnlimitedAllowanceERC20Token -{ - /// @dev Mints new tokens - /// @param _to Address of the beneficiary that will own the minted token - /// @param _value Amount of tokens to mint - function _mint(address _to, uint256 _value) - internal - { - balances[_to] = safeAdd(_value, balances[_to]); - _totalSupply = safeAdd(_totalSupply, _value); - - emit Transfer( - address(0), - _to, - _value - ); - } - - /// @dev Mints new tokens - /// @param _owner Owner of tokens that will be burned - /// @param _value Amount of tokens to burn - function _burn(address _owner, uint256 _value) - internal - { - balances[_owner] = safeSub(balances[_owner], _value); - _totalSupply = safeSub(_totalSupply, _value); - - emit Transfer( - _owner, - address(0), - _value - ); - } -} diff --git a/packages/contracts/src/2.0.0/tokens/ERC20Token/UnlimitedAllowanceERC20Token.sol b/packages/contracts/src/2.0.0/tokens/ERC20Token/UnlimitedAllowanceERC20Token.sol deleted file mode 100644 index 2e5bd4348..000000000 --- a/packages/contracts/src/2.0.0/tokens/ERC20Token/UnlimitedAllowanceERC20Token.sol +++ /dev/null @@ -1,70 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../ERC20Token/ERC20Token.sol"; - - -contract UnlimitedAllowanceERC20Token is - ERC20Token -{ - uint256 constant internal MAX_UINT = 2**256 - 1; - - /// @dev ERC20 transferFrom, modified such that an allowance of MAX_UINT represents an unlimited allowance. See https://github.com/ethereum/EIPs/issues/717 - /// @param _from Address to transfer from. - /// @param _to Address to transfer to. - /// @param _value Amount to transfer. - /// @return Success of transfer. - function transferFrom( - address _from, - address _to, - uint256 _value - ) - external - returns (bool) - { - uint256 allowance = allowed[_from][msg.sender]; - require( - balances[_from] >= _value, - "ERC20_INSUFFICIENT_BALANCE" - ); - require( - allowance >= _value, - "ERC20_INSUFFICIENT_ALLOWANCE" - ); - require( - balances[_to] + _value >= balances[_to], - "UINT256_OVERFLOW" - ); - - balances[_to] += _value; - balances[_from] -= _value; - if (allowance < MAX_UINT) { - allowed[_from][msg.sender] -= _value; - } - - emit Transfer( - _from, - _to, - _value - ); - - return true; - } -} diff --git a/packages/contracts/src/2.0.0/tokens/ERC721Token/ERC721Token.sol b/packages/contracts/src/2.0.0/tokens/ERC721Token/ERC721Token.sol deleted file mode 100644 index 530f080c0..000000000 --- a/packages/contracts/src/2.0.0/tokens/ERC721Token/ERC721Token.sol +++ /dev/null @@ -1,277 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "./IERC721Token.sol"; -import "./IERC721Receiver.sol"; -import "../../utils/SafeMath/SafeMath.sol"; - - -contract ERC721Token is - IERC721Token, - SafeMath -{ - // Function selector for ERC721Receiver.onERC721Received - // 0x150b7a02 - bytes4 constant internal ERC721_RECEIVED = bytes4(keccak256("onERC721Received(address,address,uint256,bytes)")); - - // Mapping of tokenId => owner - mapping (uint256 => address) internal owners; - - // Mapping of tokenId => approved address - mapping (uint256 => address) internal approvals; - - // Mapping of owner => number of tokens owned - mapping (address => uint256) internal balances; - - // Mapping of owner => operator => approved - mapping (address => mapping (address => bool)) internal operatorApprovals; - - /// @notice Transfers the ownership of an NFT from one address to another address - /// @dev Throws unless `msg.sender` is the current owner, an authorized - /// operator, or the approved address for this NFT. Throws if `_from` is - /// not the current owner. Throws if `_to` is the zero address. Throws if - /// `_tokenId` is not a valid NFT. When transfer is complete, this function - /// checks if `_to` is a smart contract (code size > 0). If so, it calls - /// `onERC721Received` on `_to` and throws if the return value is not - /// `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`. - /// @param _from The current owner of the NFT - /// @param _to The new owner - /// @param _tokenId The NFT to transfer - /// @param _data Additional data with no specified format, sent in call to `_to` - function safeTransferFrom( - address _from, - address _to, - uint256 _tokenId, - bytes _data - ) - external - { - transferFrom( - _from, - _to, - _tokenId - ); - - uint256 receiverCodeSize; - assembly { - receiverCodeSize := extcodesize(_to) - } - if (receiverCodeSize > 0) { - bytes4 selector = IERC721Receiver(_to).onERC721Received( - msg.sender, - _from, - _tokenId, - _data - ); - require( - selector == ERC721_RECEIVED, - "ERC721_INVALID_SELECTOR" - ); - } - } - - /// @notice Transfers the ownership of an NFT from one address to another address - /// @dev This works identically to the other function with an extra data parameter, - /// except this function just sets data to "". - /// @param _from The current owner of the NFT - /// @param _to The new owner - /// @param _tokenId The NFT to transfer - function safeTransferFrom( - address _from, - address _to, - uint256 _tokenId - ) - external - { - transferFrom( - _from, - _to, - _tokenId - ); - - uint256 receiverCodeSize; - assembly { - receiverCodeSize := extcodesize(_to) - } - if (receiverCodeSize > 0) { - bytes4 selector = IERC721Receiver(_to).onERC721Received( - msg.sender, - _from, - _tokenId, - "" - ); - require( - selector == ERC721_RECEIVED, - "ERC721_INVALID_SELECTOR" - ); - } - } - - /// @notice Change or reaffirm the approved address for an NFT - /// @dev The zero address indicates there is no approved address. - /// Throws unless `msg.sender` is the current NFT owner, or an authorized - /// operator of the current owner. - /// @param _approved The new approved NFT controller - /// @param _tokenId The NFT to approve - function approve(address _approved, uint256 _tokenId) - external - { - address owner = ownerOf(_tokenId); - require( - msg.sender == owner || isApprovedForAll(owner, msg.sender), - "ERC721_INVALID_SENDER" - ); - - approvals[_tokenId] = _approved; - emit Approval( - owner, - _approved, - _tokenId - ); - } - - /// @notice Enable or disable approval for a third party ("operator") to manage - /// all of `msg.sender`'s assets - /// @dev Emits the ApprovalForAll event. The contract MUST allow - /// multiple operators per owner. - /// @param _operator Address to add to the set of authorized operators - /// @param _approved True if the operator is approved, false to revoke approval - function setApprovalForAll(address _operator, bool _approved) - external - { - operatorApprovals[msg.sender][_operator] = _approved; - emit ApprovalForAll( - msg.sender, - _operator, - _approved - ); - } - - /// @notice Count all NFTs assigned to an owner - /// @dev NFTs assigned to the zero address are considered invalid, and this - /// function throws for queries about the zero address. - /// @param _owner An address for whom to query the balance - /// @return The number of NFTs owned by `_owner`, possibly zero - function balanceOf(address _owner) - external - view - returns (uint256) - { - require( - _owner != address(0), - "ERC721_ZERO_OWNER" - ); - return balances[_owner]; - } - - /// @notice Transfer ownership of an NFT -- THE CALLER IS RESPONSIBLE - /// TO CONFIRM THAT `_to` IS CAPABLE OF RECEIVING NFTS OR ELSE - /// THEY MAY BE PERMANENTLY LOST - /// @dev Throws unless `msg.sender` is the current owner, an authorized - /// operator, or the approved address for this NFT. Throws if `_from` is - /// not the current owner. Throws if `_to` is the zero address. Throws if - /// `_tokenId` is not a valid NFT. - /// @param _from The current owner of the NFT - /// @param _to The new owner - /// @param _tokenId The NFT to transfer - function transferFrom( - address _from, - address _to, - uint256 _tokenId - ) - public - { - require( - _to != address(0), - "ERC721_ZERO_TO_ADDRESS" - ); - - address owner = ownerOf(_tokenId); - require( - _from == owner, - "ERC721_OWNER_MISMATCH" - ); - - address spender = msg.sender; - address approvedAddress = getApproved(_tokenId); - require( - spender == owner || - isApprovedForAll(owner, spender) || - approvedAddress == spender, - "ERC721_INVALID_SPENDER" - ); - - if (approvedAddress != address(0)) { - approvals[_tokenId] = address(0); - } - - owners[_tokenId] = _to; - balances[_from] = safeSub(balances[_from], 1); - balances[_to] = safeAdd(balances[_to], 1); - - emit Transfer( - _from, - _to, - _tokenId - ); - } - - /// @notice Find the owner of an NFT - /// @dev NFTs assigned to zero address are considered invalid, and queries - /// about them do throw. - /// @param _tokenId The identifier for an NFT - /// @return The address of the owner of the NFT - function ownerOf(uint256 _tokenId) - public - view - returns (address) - { - address owner = owners[_tokenId]; - require( - owner != address(0), - "ERC721_ZERO_OWNER" - ); - return owner; - } - - /// @notice Get the approved address for a single NFT - /// @dev Throws if `_tokenId` is not a valid NFT. - /// @param _tokenId The NFT to find the approved address for - /// @return The approved address for this NFT, or the zero address if there is none - function getApproved(uint256 _tokenId) - public - view - returns (address) - { - return approvals[_tokenId]; - } - - /// @notice Query if an address is an authorized operator for another address - /// @param _owner The address that owns the NFTs - /// @param _operator The address that acts on behalf of the owner - /// @return True if `_operator` is an approved operator for `_owner`, false otherwise - function isApprovedForAll(address _owner, address _operator) - public - view - returns (bool) - { - return operatorApprovals[_owner][_operator]; - } -} diff --git a/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Receiver.sol b/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Receiver.sol deleted file mode 100644 index 8e0e32ab2..000000000 --- a/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Receiver.sol +++ /dev/null @@ -1,44 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - - -contract IERC721Receiver { - - /// @notice Handle the receipt of an NFT - /// @dev The ERC721 smart contract calls this function on the recipient - /// after a `transfer`. This function MAY throw to revert and reject the - /// transfer. Return of other than the magic value MUST result in the - /// transaction being reverted. - /// Note: the contract address is always the message sender. - /// @param _operator The address which called `safeTransferFrom` function - /// @param _from The address which previously owned the token - /// @param _tokenId The NFT identifier which is being transferred - /// @param _data Additional data with no specified format - /// @return `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))` - /// unless throwing - function onERC721Received( - address _operator, - address _from, - uint256 _tokenId, - bytes _data - ) - external - returns (bytes4); -} diff --git a/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Token.sol b/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Token.sol deleted file mode 100644 index ac992c80d..000000000 --- a/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Token.sol +++ /dev/null @@ -1,158 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - - -contract IERC721Token { - - /// @dev This emits when ownership of any NFT changes by any mechanism. - /// This event emits when NFTs are created (`from` == 0) and destroyed - /// (`to` == 0). Exception: during contract creation, any number of NFTs - /// may be created and assigned without emitting Transfer. At the time of - /// any transfer, the approved address for that NFT (if any) is reset to none. - event Transfer( - address indexed _from, - address indexed _to, - uint256 indexed _tokenId - ); - - /// @dev This emits when the approved address for an NFT is changed or - /// reaffirmed. The zero address indicates there is no approved address. - /// When a Transfer event emits, this also indicates that the approved - /// address for that NFT (if any) is reset to none. - event Approval( - address indexed _owner, - address indexed _approved, - uint256 indexed _tokenId - ); - - /// @dev This emits when an operator is enabled or disabled for an owner. - /// The operator can manage all NFTs of the owner. - event ApprovalForAll( - address indexed _owner, - address indexed _operator, - bool _approved - ); - - /// @notice Transfers the ownership of an NFT from one address to another address - /// @dev Throws unless `msg.sender` is the current owner, an authorized - /// perator, or the approved address for this NFT. Throws if `_from` is - /// not the current owner. Throws if `_to` is the zero address. Throws if - /// `_tokenId` is not a valid NFT. When transfer is complete, this function - /// checks if `_to` is a smart contract (code size > 0). If so, it calls - /// `onERC721Received` on `_to` and throws if the return value is not - /// `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`. - /// @param _from The current owner of the NFT - /// @param _to The new owner - /// @param _tokenId The NFT to transfer - /// @param _data Additional data with no specified format, sent in call to `_to` - function safeTransferFrom( - address _from, - address _to, - uint256 _tokenId, - bytes _data - ) - external; - - /// @notice Transfers the ownership of an NFT from one address to another address - /// @dev This works identically to the other function with an extra data parameter, - /// except this function just sets data to "". - /// @param _from The current owner of the NFT - /// @param _to The new owner - /// @param _tokenId The NFT to transfer - function safeTransferFrom( - address _from, - address _to, - uint256 _tokenId - ) - external; - - /// @notice Change or reaffirm the approved address for an NFT - /// @dev The zero address indicates there is no approved address. - /// Throws unless `msg.sender` is the current NFT owner, or an authorized - /// operator of the current owner. - /// @param _approved The new approved NFT controller - /// @param _tokenId The NFT to approve - function approve(address _approved, uint256 _tokenId) - external; - - /// @notice Enable or disable approval for a third party ("operator") to manage - /// all of `msg.sender`'s assets - /// @dev Emits the ApprovalForAll event. The contract MUST allow - /// multiple operators per owner. - /// @param _operator Address to add to the set of authorized operators - /// @param _approved True if the operator is approved, false to revoke approval - function setApprovalForAll(address _operator, bool _approved) - external; - - /// @notice Count all NFTs assigned to an owner - /// @dev NFTs assigned to the zero address are considered invalid, and this - /// function throws for queries about the zero address. - /// @param _owner An address for whom to query the balance - /// @return The number of NFTs owned by `_owner`, possibly zero - function balanceOf(address _owner) - external - view - returns (uint256); - - /// @notice Transfer ownership of an NFT -- THE CALLER IS RESPONSIBLE - /// TO CONFIRM THAT `_to` IS CAPABLE OF RECEIVING NFTS OR ELSE - /// THEY MAY BE PERMANENTLY LOST - /// @dev Throws unless `msg.sender` is the current owner, an authorized - /// operator, or the approved address for this NFT. Throws if `_from` is - /// not the current owner. Throws if `_to` is the zero address. Throws if - /// `_tokenId` is not a valid NFT. - /// @param _from The current owner of the NFT - /// @param _to The new owner - /// @param _tokenId The NFT to transfer - function transferFrom( - address _from, - address _to, - uint256 _tokenId - ) - public; - - /// @notice Find the owner of an NFT - /// @dev NFTs assigned to zero address are considered invalid, and queries - /// about them do throw. - /// @param _tokenId The identifier for an NFT - /// @return The address of the owner of the NFT - function ownerOf(uint256 _tokenId) - public - view - returns (address); - - /// @notice Get the approved address for a single NFT - /// @dev Throws if `_tokenId` is not a valid NFT. - /// @param _tokenId The NFT to find the approved address for - /// @return The approved address for this NFT, or the zero address if there is none - function getApproved(uint256 _tokenId) - public - view - returns (address); - - /// @notice Query if an address is an authorized operator for another address - /// @param _owner The address that owns the NFTs - /// @param _operator The address that acts on behalf of the owner - /// @return True if `_operator` is an approved operator for `_owner`, false otherwise - function isApprovedForAll(address _owner, address _operator) - public - view - returns (bool); -} diff --git a/packages/contracts/src/2.0.0/tokens/ERC721Token/MintableERC721Token.sol b/packages/contracts/src/2.0.0/tokens/ERC721Token/MintableERC721Token.sol deleted file mode 100644 index bc5cd2cc2..000000000 --- a/packages/contracts/src/2.0.0/tokens/ERC721Token/MintableERC721Token.sol +++ /dev/null @@ -1,82 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "./ERC721Token.sol"; - - -contract MintableERC721Token is - ERC721Token -{ - /// @dev Function to mint a new token - /// Reverts if the given token ID already exists - /// @param _to Address of the beneficiary that will own the minted token - /// @param _tokenId ID of the token to be minted by the msg.sender - function _mint(address _to, uint256 _tokenId) - internal - { - require( - _to != address(0), - "ERC721_ZERO_TO_ADDRESS" - ); - - address owner = owners[_tokenId]; - require( - owner == address(0), - "ERC721_OWNER_ALREADY_EXISTS" - ); - - owners[_tokenId] = _to; - balances[_to] = safeAdd(balances[_to], 1); - - emit Transfer( - address(0), - _to, - _tokenId - ); - } - - /// @dev Function to burn a token - /// Reverts if the given token ID doesn't exist - /// @param _owner Owner of token with given token ID - /// @param _tokenId ID of the token to be burned by the msg.sender - function _burn(address _owner, uint256 _tokenId) - internal - { - require( - _owner != address(0), - "ERC721_ZERO_OWNER_ADDRESS" - ); - - address owner = owners[_tokenId]; - require( - owner == _owner, - "ERC721_OWNER_MISMATCH" - ); - - owners[_tokenId] = address(0); - balances[_owner] = safeSub(balances[_owner], 1); - - emit Transfer( - _owner, - address(0), - _tokenId - ); - } -} diff --git a/packages/contracts/src/2.0.0/tokens/EtherToken/IEtherToken.sol b/packages/contracts/src/2.0.0/tokens/EtherToken/IEtherToken.sol deleted file mode 100644 index 9e2e68766..000000000 --- a/packages/contracts/src/2.0.0/tokens/EtherToken/IEtherToken.sol +++ /dev/null @@ -1,33 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../ERC20Token/IERC20Token.sol"; - - -contract IEtherToken is - IERC20Token -{ - function deposit() - public - payable; - - function withdraw(uint256 amount) - public; -} diff --git a/packages/contracts/src/2.0.0/tokens/EtherToken/WETH9.sol b/packages/contracts/src/2.0.0/tokens/EtherToken/WETH9.sol deleted file mode 100644 index 17876b86d..000000000 --- a/packages/contracts/src/2.0.0/tokens/EtherToken/WETH9.sol +++ /dev/null @@ -1,758 +0,0 @@ -// Copyright (C) 2015, 2016, 2017 Dapphub - -// This program is free software: you can redistribute it and/or modify -// it under the terms of the GNU General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. - -// This program is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License for more details. - -// You should have received a copy of the GNU General Public License -// along with this program. If not, see . - -// solhint-disable -pragma solidity ^0.4.18; - - -contract WETH9 { - string public name = "Wrapped Ether"; - string public symbol = "WETH"; - uint8 public decimals = 18; - - event Approval(address indexed _owner, address indexed _spender, uint _value); - event Transfer(address indexed _from, address indexed _to, uint _value); - event Deposit(address indexed _owner, uint _value); - event Withdrawal(address indexed _owner, uint _value); - - mapping (address => uint) public balanceOf; - mapping (address => mapping (address => uint)) public allowance; - - function() public payable { - deposit(); - } - function deposit() public payable { - balanceOf[msg.sender] += msg.value; - Deposit(msg.sender, msg.value); - } - function withdraw(uint wad) public { - require(balanceOf[msg.sender] >= wad); - balanceOf[msg.sender] -= wad; - msg.sender.transfer(wad); - Withdrawal(msg.sender, wad); - } - - function totalSupply() public view returns (uint) { - return this.balance; - } - - function approve(address guy, uint wad) public returns (bool) { - allowance[msg.sender][guy] = wad; - Approval(msg.sender, guy, wad); - return true; - } - - function transfer(address dst, uint wad) public returns (bool) { - return transferFrom(msg.sender, dst, wad); - } - - function transferFrom(address src, address dst, uint wad) - public - returns (bool) - { - require(balanceOf[src] >= wad); - - if (src != msg.sender && allowance[src][msg.sender] != uint(-1)) { - require(allowance[src][msg.sender] >= wad); - allowance[src][msg.sender] -= wad; - } - - balanceOf[src] -= wad; - balanceOf[dst] += wad; - - Transfer(src, dst, wad); - - return true; - } -} - - -/* - GNU GENERAL PUBLIC LICENSE - Version 3, 29 June 2007 - - Copyright (C) 2007 Free Software Foundation, Inc. - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. - - Preamble - - The GNU General Public License is a free, copyleft license for -software and other kinds of works. - - The licenses for most software and other practical works are designed -to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. - - If the disclaimer of warranty and limitation of liability provided -above cannot be given local legal effect according to their terms, -reviewing courts shall apply local law that most closely approximates -an absolute waiver of all civil liability in connection with the -Program, unless a warranty or assumption of liability accompanies a -copy of the Program in return for a fee. - - END OF TERMS AND CONDITIONS - - How to Apply These Terms to Your New Programs - - If you develop a new program, and you want it to be of the greatest -possible use to the public, the best way to achieve this is to make it -free software which everyone can redistribute and change under these terms. - - To do so, attach the following notices to the program. It is safest -to attach them to the start of each source file to most effectively -state the exclusion of warranty; and each file should have at least -the "copyright" line and a pointer to where the full notice is found. - - - Copyright (C) - - This program is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see . - -Also add information on how to contact you by electronic and paper mail. - - If the program does terminal interaction, make it output a short -notice like this when it starts in an interactive mode: - - Copyright (C) - This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. - This is free software, and you are welcome to redistribute it - under certain conditions; type `show c' for details. - -The hypothetical commands `show w' and `show c' should show the appropriate -parts of the General Public License. Of course, your program's commands -might be different; for a GUI interface, you would use an "about box". - - You should also get your employer (if you work as a programmer) or school, -if any, to sign a "copyright disclaimer" for the program, if necessary. -For more information on this, and how to apply and follow the GNU GPL, see -. - - The GNU General Public License does not permit incorporating your program -into proprietary programs. If your program is a subroutine library, you -may consider it more useful to permit linking proprietary applications with -the library. If this is what you want to do, use the GNU Lesser General -Public License instead of this License. But first, please read -. - -*/ diff --git a/packages/contracts/src/2.0.0/tokens/ZRXToken/ZRXToken.sol b/packages/contracts/src/2.0.0/tokens/ZRXToken/ZRXToken.sol deleted file mode 100644 index f4855759c..000000000 --- a/packages/contracts/src/2.0.0/tokens/ZRXToken/ZRXToken.sol +++ /dev/null @@ -1,41 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.11; - -// solhint-disable-next-line max-line-length -import { UnlimitedAllowanceToken_v1 as UnlimitedAllowanceToken } from "../../../1.0.0/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol"; - - -contract ZRXToken is - UnlimitedAllowanceToken -{ - - // solhint-disable const-name-snakecase - uint8 constant public decimals = 18; - uint256 public totalSupply = 10**27; // 1 billion tokens, 18 decimal places - string constant public name = "0x Protocol Token"; - string constant public symbol = "ZRX"; - // solhint-enableconst-name-snakecase - - function ZRXToken() - public - { - balances[msg.sender] = totalSupply; - } -} diff --git a/packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol b/packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol deleted file mode 100644 index 369f588ad..000000000 --- a/packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol +++ /dev/null @@ -1,567 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - - -library LibBytes { - - using LibBytes for bytes; - - /// @dev Gets the memory address for a byte array. - /// @param input Byte array to lookup. - /// @return memoryAddress Memory address of byte array. This - /// points to the header of the byte array which contains - /// the length. - function rawAddress(bytes memory input) - internal - pure - returns (uint256 memoryAddress) - { - assembly { - memoryAddress := input - } - return memoryAddress; - } - - /// @dev Gets the memory address for the contents of a byte array. - /// @param input Byte array to lookup. - /// @return memoryAddress Memory address of the contents of the byte array. - function contentAddress(bytes memory input) - internal - pure - returns (uint256 memoryAddress) - { - assembly { - memoryAddress := add(input, 32) - } - return memoryAddress; - } - - /// @dev Copies `length` bytes from memory location `source` to `dest`. - /// @param dest memory address to copy bytes to. - /// @param source memory address to copy bytes from. - /// @param length number of bytes to copy. - function memCopy( - uint256 dest, - uint256 source, - uint256 length - ) - internal - pure - { - if (length < 32) { - // Handle a partial word by reading destination and masking - // off the bits we are interested in. - // This correctly handles overlap, zero lengths and source == dest - assembly { - let mask := sub(exp(256, sub(32, length)), 1) - let s := and(mload(source), not(mask)) - let d := and(mload(dest), mask) - mstore(dest, or(s, d)) - } - } else { - // Skip the O(length) loop when source == dest. - if (source == dest) { - return; - } - - // For large copies we copy whole words at a time. The final - // word is aligned to the end of the range (instead of after the - // previous) to handle partial words. So a copy will look like this: - // - // #### - // #### - // #### - // #### - // - // We handle overlap in the source and destination range by - // changing the copying direction. This prevents us from - // overwriting parts of source that we still need to copy. - // - // This correctly handles source == dest - // - if (source > dest) { - assembly { - // We subtract 32 from `sEnd` and `dEnd` because it - // is easier to compare with in the loop, and these - // are also the addresses we need for copying the - // last bytes. - length := sub(length, 32) - let sEnd := add(source, length) - let dEnd := add(dest, length) - - // Remember the last 32 bytes of source - // This needs to be done here and not after the loop - // because we may have overwritten the last bytes in - // source already due to overlap. - let last := mload(sEnd) - - // Copy whole words front to back - // Note: the first check is always true, - // this could have been a do-while loop. - // solhint-disable-next-line no-empty-blocks - for {} lt(source, sEnd) {} { - mstore(dest, mload(source)) - source := add(source, 32) - dest := add(dest, 32) - } - - // Write the last 32 bytes - mstore(dEnd, last) - } - } else { - assembly { - // We subtract 32 from `sEnd` and `dEnd` because those - // are the starting points when copying a word at the end. - length := sub(length, 32) - let sEnd := add(source, length) - let dEnd := add(dest, length) - - // Remember the first 32 bytes of source - // This needs to be done here and not after the loop - // because we may have overwritten the first bytes in - // source already due to overlap. - let first := mload(source) - - // Copy whole words back to front - // We use a signed comparisson here to allow dEnd to become - // negative (happens when source and dest < 32). Valid - // addresses in local memory will never be larger than - // 2**255, so they can be safely re-interpreted as signed. - // Note: the first check is always true, - // this could have been a do-while loop. - // solhint-disable-next-line no-empty-blocks - for {} slt(dest, dEnd) {} { - mstore(dEnd, mload(sEnd)) - sEnd := sub(sEnd, 32) - dEnd := sub(dEnd, 32) - } - - // Write the first 32 bytes - mstore(dest, first) - } - } - } - } - - /// @dev Returns a slices from a byte array. - /// @param b The byte array to take a slice from. - /// @param from The starting index for the slice (inclusive). - /// @param to The final index for the slice (exclusive). - /// @return result The slice containing bytes at indices [from, to) - function slice( - bytes memory b, - uint256 from, - uint256 to - ) - internal - pure - returns (bytes memory result) - { - require( - from <= to, - "FROM_LESS_THAN_TO_REQUIRED" - ); - require( - to < b.length, - "TO_LESS_THAN_LENGTH_REQUIRED" - ); - - // Create a new bytes structure and copy contents - result = new bytes(to - from); - memCopy( - result.contentAddress(), - b.contentAddress() + from, - result.length - ); - return result; - } - - /// @dev Returns a slice from a byte array without preserving the input. - /// @param b The byte array to take a slice from. Will be destroyed in the process. - /// @param from The starting index for the slice (inclusive). - /// @param to The final index for the slice (exclusive). - /// @return result The slice containing bytes at indices [from, to) - /// @dev When `from == 0`, the original array will match the slice. In other cases its state will be corrupted. - function sliceDestructive( - bytes memory b, - uint256 from, - uint256 to - ) - internal - pure - returns (bytes memory result) - { - require( - from <= to, - "FROM_LESS_THAN_TO_REQUIRED" - ); - require( - to < b.length, - "TO_LESS_THAN_LENGTH_REQUIRED" - ); - - // Create a new bytes structure around [from, to) in-place. - assembly { - result := add(b, from) - mstore(result, sub(to, from)) - } - return result; - } - - /// @dev Pops the last byte off of a byte array by modifying its length. - /// @param b Byte array that will be modified. - /// @return The byte that was popped off. - function popLastByte(bytes memory b) - internal - pure - returns (bytes1 result) - { - require( - b.length > 0, - "GREATER_THAN_ZERO_LENGTH_REQUIRED" - ); - - // Store last byte. - result = b[b.length - 1]; - - assembly { - // Decrement length of byte array. - let newLen := sub(mload(b), 1) - mstore(b, newLen) - } - return result; - } - - /// @dev Pops the last 20 bytes off of a byte array by modifying its length. - /// @param b Byte array that will be modified. - /// @return The 20 byte address that was popped off. - function popLast20Bytes(bytes memory b) - internal - pure - returns (address result) - { - require( - b.length >= 20, - "GREATER_OR_EQUAL_TO_20_LENGTH_REQUIRED" - ); - - // Store last 20 bytes. - result = readAddress(b, b.length - 20); - - assembly { - // Subtract 20 from byte array length. - let newLen := sub(mload(b), 20) - mstore(b, newLen) - } - return result; - } - - /// @dev Tests equality of two byte arrays. - /// @param lhs First byte array to compare. - /// @param rhs Second byte array to compare. - /// @return True if arrays are the same. False otherwise. - function equals( - bytes memory lhs, - bytes memory rhs - ) - internal - pure - returns (bool equal) - { - // Keccak gas cost is 30 + numWords * 6. This is a cheap way to compare. - // We early exit on unequal lengths, but keccak would also correctly - // handle this. - return lhs.length == rhs.length && keccak256(lhs) == keccak256(rhs); - } - - /// @dev Reads an address from a position in a byte array. - /// @param b Byte array containing an address. - /// @param index Index in byte array of address. - /// @return address from byte array. - function readAddress( - bytes memory b, - uint256 index - ) - internal - pure - returns (address result) - { - require( - b.length >= index + 20, // 20 is length of address - "GREATER_OR_EQUAL_TO_20_LENGTH_REQUIRED" - ); - - // Add offset to index: - // 1. Arrays are prefixed by 32-byte length parameter (add 32 to index) - // 2. Account for size difference between address length and 32-byte storage word (subtract 12 from index) - index += 20; - - // Read address from array memory - assembly { - // 1. Add index to address of bytes array - // 2. Load 32-byte word from memory - // 3. Apply 20-byte mask to obtain address - result := and(mload(add(b, index)), 0xffffffffffffffffffffffffffffffffffffffff) - } - return result; - } - - /// @dev Writes an address into a specific position in a byte array. - /// @param b Byte array to insert address into. - /// @param index Index in byte array of address. - /// @param input Address to put into byte array. - function writeAddress( - bytes memory b, - uint256 index, - address input - ) - internal - pure - { - require( - b.length >= index + 20, // 20 is length of address - "GREATER_OR_EQUAL_TO_20_LENGTH_REQUIRED" - ); - - // Add offset to index: - // 1. Arrays are prefixed by 32-byte length parameter (add 32 to index) - // 2. Account for size difference between address length and 32-byte storage word (subtract 12 from index) - index += 20; - - // Store address into array memory - assembly { - // The address occupies 20 bytes and mstore stores 32 bytes. - // First fetch the 32-byte word where we'll be storing the address, then - // apply a mask so we have only the bytes in the word that the address will not occupy. - // Then combine these bytes with the address and store the 32 bytes back to memory with mstore. - - // 1. Add index to address of bytes array - // 2. Load 32-byte word from memory - // 3. Apply 12-byte mask to obtain extra bytes occupying word of memory where we'll store the address - let neighbors := and( - mload(add(b, index)), - 0xffffffffffffffffffffffff0000000000000000000000000000000000000000 - ) - - // Make sure input address is clean. - // (Solidity does not guarantee this) - input := and(input, 0xffffffffffffffffffffffffffffffffffffffff) - - // Store the neighbors and address into memory - mstore(add(b, index), xor(input, neighbors)) - } - } - - /// @dev Reads a bytes32 value from a position in a byte array. - /// @param b Byte array containing a bytes32 value. - /// @param index Index in byte array of bytes32 value. - /// @return bytes32 value from byte array. - function readBytes32( - bytes memory b, - uint256 index - ) - internal - pure - returns (bytes32 result) - { - require( - b.length >= index + 32, - "GREATER_OR_EQUAL_TO_32_LENGTH_REQUIRED" - ); - - // Arrays are prefixed by a 256 bit length parameter - index += 32; - - // Read the bytes32 from array memory - assembly { - result := mload(add(b, index)) - } - return result; - } - - /// @dev Writes a bytes32 into a specific position in a byte array. - /// @param b Byte array to insert into. - /// @param index Index in byte array of . - /// @param input bytes32 to put into byte array. - function writeBytes32( - bytes memory b, - uint256 index, - bytes32 input - ) - internal - pure - { - require( - b.length >= index + 32, - "GREATER_OR_EQUAL_TO_32_LENGTH_REQUIRED" - ); - - // Arrays are prefixed by a 256 bit length parameter - index += 32; - - // Read the bytes32 from array memory - assembly { - mstore(add(b, index), input) - } - } - - /// @dev Reads a uint256 value from a position in a byte array. - /// @param b Byte array containing a uint256 value. - /// @param index Index in byte array of uint256 value. - /// @return uint256 value from byte array. - function readUint256( - bytes memory b, - uint256 index - ) - internal - pure - returns (uint256 result) - { - result = uint256(readBytes32(b, index)); - return result; - } - - /// @dev Writes a uint256 into a specific position in a byte array. - /// @param b Byte array to insert into. - /// @param index Index in byte array of . - /// @param input uint256 to put into byte array. - function writeUint256( - bytes memory b, - uint256 index, - uint256 input - ) - internal - pure - { - writeBytes32(b, index, bytes32(input)); - } - - /// @dev Reads an unpadded bytes4 value from a position in a byte array. - /// @param b Byte array containing a bytes4 value. - /// @param index Index in byte array of bytes4 value. - /// @return bytes4 value from byte array. - function readBytes4( - bytes memory b, - uint256 index - ) - internal - pure - returns (bytes4 result) - { - require( - b.length >= index + 4, - "GREATER_OR_EQUAL_TO_4_LENGTH_REQUIRED" - ); - - // Arrays are prefixed by a 32 byte length field - index += 32; - - // Read the bytes4 from array memory - assembly { - result := mload(add(b, index)) - // Solidity does not require us to clean the trailing bytes. - // We do it anyway - result := and(result, 0xFFFFFFFF00000000000000000000000000000000000000000000000000000000) - } - return result; - } - - /// @dev Reads nested bytes from a specific position. - /// @dev NOTE: the returned value overlaps with the input value. - /// Both should be treated as immutable. - /// @param b Byte array containing nested bytes. - /// @param index Index of nested bytes. - /// @return result Nested bytes. - function readBytesWithLength( - bytes memory b, - uint256 index - ) - internal - pure - returns (bytes memory result) - { - // Read length of nested bytes - uint256 nestedBytesLength = readUint256(b, index); - index += 32; - - // Assert length of is valid, given - // length of nested bytes - require( - b.length >= index + nestedBytesLength, - "GREATER_OR_EQUAL_TO_NESTED_BYTES_LENGTH_REQUIRED" - ); - - // Return a pointer to the byte array as it exists inside `b` - assembly { - result := add(b, index) - } - return result; - } - - /// @dev Inserts bytes at a specific position in a byte array. - /// @param b Byte array to insert into. - /// @param index Index in byte array of . - /// @param input bytes to insert. - function writeBytesWithLength( - bytes memory b, - uint256 index, - bytes memory input - ) - internal - pure - { - // Assert length of is valid, given - // length of input - require( - b.length >= index + 32 + input.length, // 32 bytes to store length - "GREATER_OR_EQUAL_TO_NESTED_BYTES_LENGTH_REQUIRED" - ); - - // Copy into - memCopy( - b.contentAddress() + index, - input.rawAddress(), // includes length of - input.length + 32 // +32 bytes to store length - ); - } - - /// @dev Performs a deep copy of a byte array onto another byte array of greater than or equal length. - /// @param dest Byte array that will be overwritten with source bytes. - /// @param source Byte array to copy onto dest bytes. - function deepCopyBytes( - bytes memory dest, - bytes memory source - ) - internal - pure - { - uint256 sourceLen = source.length; - // Dest length must be >= source length, or some bytes would not be copied. - require( - dest.length >= sourceLen, - "GREATER_OR_EQUAL_TO_SOURCE_BYTES_LENGTH_REQUIRED" - ); - memCopy( - dest.contentAddress(), - source.contentAddress(), - sourceLen - ); - } -} diff --git a/packages/contracts/src/2.0.0/utils/Ownable/IOwnable.sol b/packages/contracts/src/2.0.0/utils/Ownable/IOwnable.sol deleted file mode 100644 index 5deb13497..000000000 --- a/packages/contracts/src/2.0.0/utils/Ownable/IOwnable.sol +++ /dev/null @@ -1,8 +0,0 @@ -pragma solidity 0.4.24; - - -contract IOwnable { - - function transferOwnership(address newOwner) - public; -} diff --git a/packages/contracts/src/2.0.0/utils/Ownable/Ownable.sol b/packages/contracts/src/2.0.0/utils/Ownable/Ownable.sol deleted file mode 100644 index 0c830be68..000000000 --- a/packages/contracts/src/2.0.0/utils/Ownable/Ownable.sol +++ /dev/null @@ -1,33 +0,0 @@ -pragma solidity 0.4.24; - -import "./IOwnable.sol"; - - -contract Ownable is - IOwnable -{ - address public owner; - - constructor () - public - { - owner = msg.sender; - } - - modifier onlyOwner() { - require( - msg.sender == owner, - "ONLY_CONTRACT_OWNER" - ); - _; - } - - function transferOwnership(address newOwner) - public - onlyOwner - { - if (newOwner != address(0)) { - owner = newOwner; - } - } -} diff --git a/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol b/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol deleted file mode 100644 index 9f98a7a16..000000000 --- a/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol +++ /dev/null @@ -1,45 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - - -contract ReentrancyGuard { - - // Locked state of mutex - bool private locked = false; - - /// @dev Functions with this modifer cannot be reentered. The mutex will be locked - /// before function execution and unlocked after. - modifier nonReentrant() { - // Ensure mutex is unlocked - require( - !locked, - "REENTRANCY_ILLEGAL" - ); - - // Lock mutex before function call - locked = true; - - // Perform function call - _; - - // Unlock mutex after function call - locked = false; - } -} diff --git a/packages/contracts/src/2.0.0/utils/SafeMath/SafeMath.sol b/packages/contracts/src/2.0.0/utils/SafeMath/SafeMath.sol deleted file mode 100644 index 2855edb9d..000000000 --- a/packages/contracts/src/2.0.0/utils/SafeMath/SafeMath.sol +++ /dev/null @@ -1,87 +0,0 @@ -pragma solidity 0.4.24; - - -contract SafeMath { - - function safeMul(uint256 a, uint256 b) - internal - pure - returns (uint256) - { - if (a == 0) { - return 0; - } - uint256 c = a * b; - require( - c / a == b, - "UINT256_OVERFLOW" - ); - return c; - } - - function safeDiv(uint256 a, uint256 b) - internal - pure - returns (uint256) - { - uint256 c = a / b; - return c; - } - - function safeSub(uint256 a, uint256 b) - internal - pure - returns (uint256) - { - require( - b <= a, - "UINT256_UNDERFLOW" - ); - return a - b; - } - - function safeAdd(uint256 a, uint256 b) - internal - pure - returns (uint256) - { - uint256 c = a + b; - require( - c >= a, - "UINT256_OVERFLOW" - ); - return c; - } - - function max64(uint64 a, uint64 b) - internal - pure - returns (uint256) - { - return a >= b ? a : b; - } - - function min64(uint64 a, uint64 b) - internal - pure - returns (uint256) - { - return a < b ? a : b; - } - - function max256(uint256 a, uint256 b) - internal - pure - returns (uint256) - { - return a >= b ? a : b; - } - - function min256(uint256 a, uint256 b) - internal - pure - returns (uint256) - { - return a < b ? a : b; - } -} diff --git a/packages/contracts/src/artifacts/index.ts b/packages/contracts/src/artifacts/index.ts new file mode 100644 index 000000000..1522ba77a --- /dev/null +++ b/packages/contracts/src/artifacts/index.ts @@ -0,0 +1,78 @@ +import { ContractArtifact } from 'ethereum-types'; + +import * as AssetProxyOwner from '../../generated-artifacts/AssetProxyOwner.json'; +import * as DummyERC20Token from '../../generated-artifacts/DummyERC20Token.json'; +import * as DummyERC721Receiver from '../../generated-artifacts/DummyERC721Receiver.json'; +import * as DummyERC721Token from '../../generated-artifacts/DummyERC721Token.json'; +import * as DummyMultipleReturnERC20Token from '../../generated-artifacts/DummyMultipleReturnERC20Token.json'; +import * as DummyNoReturnERC20Token from '../../generated-artifacts/DummyNoReturnERC20Token.json'; +import * as ERC20Proxy from '../../generated-artifacts/ERC20Proxy.json'; +import * as ERC20Token from '../../generated-artifacts/ERC20Token.json'; +import * as ERC721Proxy from '../../generated-artifacts/ERC721Proxy.json'; +import * as ERC721Token from '../../generated-artifacts/ERC721Token.json'; +import * as Exchange from '../../generated-artifacts/Exchange.json'; +import * as ExchangeWrapper from '../../generated-artifacts/ExchangeWrapper.json'; +import * as Forwarder from '../../generated-artifacts/Forwarder.json'; +import * as IAssetData from '../../generated-artifacts/IAssetData.json'; +import * as IAssetProxy from '../../generated-artifacts/IAssetProxy.json'; +import * as InvalidERC721Receiver from '../../generated-artifacts/InvalidERC721Receiver.json'; +import * as IValidator from '../../generated-artifacts/IValidator.json'; +import * as IWallet from '../../generated-artifacts/IWallet.json'; +import * as MixinAuthorizable from '../../generated-artifacts/MixinAuthorizable.json'; +import * as MultiSigWallet from '../../generated-artifacts/MultiSigWallet.json'; +import * as MultiSigWalletWithTimeLock from '../../generated-artifacts/MultiSigWalletWithTimeLock.json'; +import * as OrderValidator from '../../generated-artifacts/OrderValidator.json'; +import * as ReentrantERC20Token from '../../generated-artifacts/ReentrantERC20Token.json'; +import * as TestAssetProxyDispatcher from '../../generated-artifacts/TestAssetProxyDispatcher.json'; +import * as TestAssetProxyOwner from '../../generated-artifacts/TestAssetProxyOwner.json'; +import * as TestConstants from '../../generated-artifacts/TestConstants.json'; +import * as TestExchangeInternals from '../../generated-artifacts/TestExchangeInternals.json'; +import * as TestLibBytes from '../../generated-artifacts/TestLibBytes.json'; +import * as TestLibs from '../../generated-artifacts/TestLibs.json'; +import * as TestSignatureValidator from '../../generated-artifacts/TestSignatureValidator.json'; +import * as TestStaticCallReceiver from '../../generated-artifacts/TestStaticCallReceiver.json'; +import * as Validator from '../../generated-artifacts/Validator.json'; +import * as Wallet from '../../generated-artifacts/Wallet.json'; +import * as WETH9 from '../../generated-artifacts/WETH9.json'; +import * as Whitelist from '../../generated-artifacts/Whitelist.json'; +import * as ZRXToken from '../../generated-artifacts/ZRXToken.json'; + +// TODO(albrow): Do we need to export all of these? +export const artifacts = { + AssetProxyOwner: (AssetProxyOwner as any) as ContractArtifact, + DummyERC20Token: (DummyERC20Token as any) as ContractArtifact, + DummyERC721Receiver: (DummyERC721Receiver as any) as ContractArtifact, + DummyERC721Token: (DummyERC721Token as any) as ContractArtifact, + DummyMultipleReturnERC20Token: (DummyMultipleReturnERC20Token as any) as ContractArtifact, + DummyNoReturnERC20Token: (DummyNoReturnERC20Token as any) as ContractArtifact, + ERC20Proxy: (ERC20Proxy as any) as ContractArtifact, + ERC20Token: (ERC20Token as any) as ContractArtifact, + ERC721Proxy: (ERC721Proxy as any) as ContractArtifact, + ERC721Token: (ERC721Token as any) as ContractArtifact, + Exchange: (Exchange as any) as ContractArtifact, + ExchangeWrapper: (ExchangeWrapper as any) as ContractArtifact, + Forwarder: (Forwarder as any) as ContractArtifact, + IAssetData: (IAssetData as any) as ContractArtifact, + IAssetProxy: (IAssetProxy as any) as ContractArtifact, + IValidator: (IValidator as any) as ContractArtifact, + IWallet: (IWallet as any) as ContractArtifact, + InvalidERC721Receiver: (InvalidERC721Receiver as any) as ContractArtifact, + MixinAuthorizable: (MixinAuthorizable as any) as ContractArtifact, + MultiSigWallet: (MultiSigWallet as any) as ContractArtifact, + MultiSigWalletWithTimeLock: (MultiSigWalletWithTimeLock as any) as ContractArtifact, + OrderValidator: (OrderValidator as any) as ContractArtifact, + ReentrantERC20Token: (ReentrantERC20Token as any) as ContractArtifact, + TestAssetProxyDispatcher: (TestAssetProxyDispatcher as any) as ContractArtifact, + TestAssetProxyOwner: (TestAssetProxyOwner as any) as ContractArtifact, + TestConstants: (TestConstants as any) as ContractArtifact, + TestExchangeInternals: (TestExchangeInternals as any) as ContractArtifact, + TestLibBytes: (TestLibBytes as any) as ContractArtifact, + TestLibs: (TestLibs as any) as ContractArtifact, + TestSignatureValidator: (TestSignatureValidator as any) as ContractArtifact, + TestStaticCallReceiver: (TestStaticCallReceiver as any) as ContractArtifact, + Validator: (Validator as any) as ContractArtifact, + WETH9: (WETH9 as any) as ContractArtifact, + Wallet: (Wallet as any) as ContractArtifact, + Whitelist: (Whitelist as any) as ContractArtifact, + ZRXToken: (ZRXToken as any) as ContractArtifact, +}; diff --git a/packages/contracts/src/index.ts b/packages/contracts/src/index.ts new file mode 100644 index 000000000..714259158 --- /dev/null +++ b/packages/contracts/src/index.ts @@ -0,0 +1,4 @@ +import * as artifacts from './artifacts'; +import * as wrappers from './wrappers'; + +export { wrappers, artifacts }; diff --git a/packages/contracts/src/wrappers/index.ts b/packages/contracts/src/wrappers/index.ts new file mode 100644 index 000000000..89c398424 --- /dev/null +++ b/packages/contracts/src/wrappers/index.ts @@ -0,0 +1,33 @@ +// TODO(albrow): Do we need to export all of these? +export * from '../../generated-wrappers/asset_proxy_owner'; +export * from '../../generated-wrappers/dummy_erc20_token'; +export * from '../../generated-wrappers/dummy_erc721_receiver'; +export * from '../../generated-wrappers/dummy_erc721_token'; +export * from '../../generated-wrappers/dummy_multiple_return_erc20_token'; +export * from '../../generated-wrappers/dummy_no_return_erc20_token'; +export * from '../../generated-wrappers/erc20_proxy'; +export * from '../../generated-wrappers/erc721_proxy'; +export * from '../../generated-wrappers/exchange'; +export * from '../../generated-wrappers/exchange_wrapper'; +export * from '../../generated-wrappers/forwarder'; +export * from '../../generated-wrappers/i_asset_data'; +export * from '../../generated-wrappers/i_asset_proxy'; +export * from '../../generated-wrappers/invalid_erc721_receiver'; +export * from '../../generated-wrappers/mixin_authorizable'; +export * from '../../generated-wrappers/multi_sig_wallet'; +export * from '../../generated-wrappers/multi_sig_wallet_with_time_lock'; +export * from '../../generated-wrappers/order_validator'; +export * from '../../generated-wrappers/reentrant_erc20_token'; +export * from '../../generated-wrappers/test_asset_proxy_dispatcher'; +export * from '../../generated-wrappers/test_asset_proxy_owner'; +export * from '../../generated-wrappers/test_constants'; +export * from '../../generated-wrappers/test_exchange_internals'; +export * from '../../generated-wrappers/test_lib_bytes'; +export * from '../../generated-wrappers/test_libs'; +export * from '../../generated-wrappers/test_signature_validator'; +export * from '../../generated-wrappers/test_static_call_receiver'; +export * from '../../generated-wrappers/validator'; +export * from '../../generated-wrappers/wallet'; +export * from '../../generated-wrappers/weth9'; +export * from '../../generated-wrappers/whitelist'; +export * from '../../generated-wrappers/zrx_token'; -- cgit v1.2.3 From 026ad1f9a10359723eed54f37c067ee2a61d8fcd Mon Sep 17 00:00:00 2001 From: Alex Browne Date: Mon, 1 Oct 2018 18:22:42 -0700 Subject: Update contract-wrappers package to use new contracts package for generated files --- packages/contracts/src/index.ts | 5 ++--- packages/contracts/src/wrappers/index.ts | 2 ++ 2 files changed, 4 insertions(+), 3 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/index.ts b/packages/contracts/src/index.ts index 714259158..72f75c594 100644 --- a/packages/contracts/src/index.ts +++ b/packages/contracts/src/index.ts @@ -1,4 +1,3 @@ -import * as artifacts from './artifacts'; +export * from './artifacts'; import * as wrappers from './wrappers'; - -export { wrappers, artifacts }; +export { wrappers }; diff --git a/packages/contracts/src/wrappers/index.ts b/packages/contracts/src/wrappers/index.ts index 89c398424..64f1dc6a3 100644 --- a/packages/contracts/src/wrappers/index.ts +++ b/packages/contracts/src/wrappers/index.ts @@ -7,6 +7,8 @@ export * from '../../generated-wrappers/dummy_multiple_return_erc20_token'; export * from '../../generated-wrappers/dummy_no_return_erc20_token'; export * from '../../generated-wrappers/erc20_proxy'; export * from '../../generated-wrappers/erc721_proxy'; +export * from '../../generated-wrappers/erc20_token'; +export * from '../../generated-wrappers/erc721_token'; export * from '../../generated-wrappers/exchange'; export * from '../../generated-wrappers/exchange_wrapper'; export * from '../../generated-wrappers/forwarder'; -- cgit v1.2.3 From 17c6661e2d3adf115cdc39371ec33bee1e8cd108 Mon Sep 17 00:00:00 2001 From: Alex Browne Date: Thu, 4 Oct 2018 17:35:57 -0700 Subject: Cleanup migrations and contracts package. Make contracts private again. --- packages/contracts/src/index.ts | 3 --- 1 file changed, 3 deletions(-) delete mode 100644 packages/contracts/src/index.ts (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/index.ts b/packages/contracts/src/index.ts deleted file mode 100644 index 72f75c594..000000000 --- a/packages/contracts/src/index.ts +++ /dev/null @@ -1,3 +0,0 @@ -export * from './artifacts'; -import * as wrappers from './wrappers'; -export { wrappers }; -- cgit v1.2.3 From 1e9ea09f087c7b3120e758d931a88812b655da08 Mon Sep 17 00:00:00 2001 From: Alex Browne Date: Tue, 9 Oct 2018 23:10:33 -0700 Subject: Introduce new contract-addresses package and use it everywhere --- packages/contracts/src/artifacts/index.ts | 1 - packages/contracts/src/wrappers/index.ts | 1 - 2 files changed, 2 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/artifacts/index.ts b/packages/contracts/src/artifacts/index.ts index 1522ba77a..a9cd31ea2 100644 --- a/packages/contracts/src/artifacts/index.ts +++ b/packages/contracts/src/artifacts/index.ts @@ -37,7 +37,6 @@ import * as WETH9 from '../../generated-artifacts/WETH9.json'; import * as Whitelist from '../../generated-artifacts/Whitelist.json'; import * as ZRXToken from '../../generated-artifacts/ZRXToken.json'; -// TODO(albrow): Do we need to export all of these? export const artifacts = { AssetProxyOwner: (AssetProxyOwner as any) as ContractArtifact, DummyERC20Token: (DummyERC20Token as any) as ContractArtifact, diff --git a/packages/contracts/src/wrappers/index.ts b/packages/contracts/src/wrappers/index.ts index 64f1dc6a3..9ca676b56 100644 --- a/packages/contracts/src/wrappers/index.ts +++ b/packages/contracts/src/wrappers/index.ts @@ -1,4 +1,3 @@ -// TODO(albrow): Do we need to export all of these? export * from '../../generated-wrappers/asset_proxy_owner'; export * from '../../generated-wrappers/dummy_erc20_token'; export * from '../../generated-wrappers/dummy_erc721_receiver'; -- cgit v1.2.3 From 68f150eff2c4afeccf7eee43e9f40297f88fc8dd Mon Sep 17 00:00:00 2001 From: Alex Browne Date: Tue, 9 Oct 2018 23:42:12 -0700 Subject: Remove as any hack from artifacts in contracts package --- packages/contracts/src/artifacts/index.ts | 72 ++++++++++++++++--------------- 1 file changed, 37 insertions(+), 35 deletions(-) (limited to 'packages/contracts/src') diff --git a/packages/contracts/src/artifacts/index.ts b/packages/contracts/src/artifacts/index.ts index a9cd31ea2..c30972a91 100644 --- a/packages/contracts/src/artifacts/index.ts +++ b/packages/contracts/src/artifacts/index.ts @@ -38,40 +38,42 @@ import * as Whitelist from '../../generated-artifacts/Whitelist.json'; import * as ZRXToken from '../../generated-artifacts/ZRXToken.json'; export const artifacts = { - AssetProxyOwner: (AssetProxyOwner as any) as ContractArtifact, - DummyERC20Token: (DummyERC20Token as any) as ContractArtifact, - DummyERC721Receiver: (DummyERC721Receiver as any) as ContractArtifact, - DummyERC721Token: (DummyERC721Token as any) as ContractArtifact, - DummyMultipleReturnERC20Token: (DummyMultipleReturnERC20Token as any) as ContractArtifact, - DummyNoReturnERC20Token: (DummyNoReturnERC20Token as any) as ContractArtifact, - ERC20Proxy: (ERC20Proxy as any) as ContractArtifact, - ERC20Token: (ERC20Token as any) as ContractArtifact, - ERC721Proxy: (ERC721Proxy as any) as ContractArtifact, - ERC721Token: (ERC721Token as any) as ContractArtifact, - Exchange: (Exchange as any) as ContractArtifact, - ExchangeWrapper: (ExchangeWrapper as any) as ContractArtifact, - Forwarder: (Forwarder as any) as ContractArtifact, - IAssetData: (IAssetData as any) as ContractArtifact, - IAssetProxy: (IAssetProxy as any) as ContractArtifact, - IValidator: (IValidator as any) as ContractArtifact, - IWallet: (IWallet as any) as ContractArtifact, - InvalidERC721Receiver: (InvalidERC721Receiver as any) as ContractArtifact, - MixinAuthorizable: (MixinAuthorizable as any) as ContractArtifact, - MultiSigWallet: (MultiSigWallet as any) as ContractArtifact, - MultiSigWalletWithTimeLock: (MultiSigWalletWithTimeLock as any) as ContractArtifact, - OrderValidator: (OrderValidator as any) as ContractArtifact, - ReentrantERC20Token: (ReentrantERC20Token as any) as ContractArtifact, - TestAssetProxyDispatcher: (TestAssetProxyDispatcher as any) as ContractArtifact, - TestAssetProxyOwner: (TestAssetProxyOwner as any) as ContractArtifact, - TestConstants: (TestConstants as any) as ContractArtifact, - TestExchangeInternals: (TestExchangeInternals as any) as ContractArtifact, - TestLibBytes: (TestLibBytes as any) as ContractArtifact, - TestLibs: (TestLibs as any) as ContractArtifact, - TestSignatureValidator: (TestSignatureValidator as any) as ContractArtifact, - TestStaticCallReceiver: (TestStaticCallReceiver as any) as ContractArtifact, - Validator: (Validator as any) as ContractArtifact, - WETH9: (WETH9 as any) as ContractArtifact, - Wallet: (Wallet as any) as ContractArtifact, - Whitelist: (Whitelist as any) as ContractArtifact, + AssetProxyOwner: AssetProxyOwner as ContractArtifact, + DummyERC20Token: DummyERC20Token as ContractArtifact, + DummyERC721Receiver: DummyERC721Receiver as ContractArtifact, + DummyERC721Token: DummyERC721Token as ContractArtifact, + DummyMultipleReturnERC20Token: DummyMultipleReturnERC20Token as ContractArtifact, + DummyNoReturnERC20Token: DummyNoReturnERC20Token as ContractArtifact, + ERC20Proxy: ERC20Proxy as ContractArtifact, + ERC20Token: ERC20Token as ContractArtifact, + ERC721Proxy: ERC721Proxy as ContractArtifact, + ERC721Token: ERC721Token as ContractArtifact, + Exchange: Exchange as ContractArtifact, + ExchangeWrapper: ExchangeWrapper as ContractArtifact, + Forwarder: Forwarder as ContractArtifact, + IAssetData: IAssetData as ContractArtifact, + IAssetProxy: IAssetProxy as ContractArtifact, + IValidator: IValidator as ContractArtifact, + IWallet: IWallet as ContractArtifact, + InvalidERC721Receiver: InvalidERC721Receiver as ContractArtifact, + MixinAuthorizable: MixinAuthorizable as ContractArtifact, + MultiSigWallet: MultiSigWallet as ContractArtifact, + MultiSigWalletWithTimeLock: MultiSigWalletWithTimeLock as ContractArtifact, + OrderValidator: OrderValidator as ContractArtifact, + ReentrantERC20Token: ReentrantERC20Token as ContractArtifact, + TestAssetProxyDispatcher: TestAssetProxyDispatcher as ContractArtifact, + TestAssetProxyOwner: TestAssetProxyOwner as ContractArtifact, + TestConstants: TestConstants as ContractArtifact, + TestExchangeInternals: TestExchangeInternals as ContractArtifact, + TestLibBytes: TestLibBytes as ContractArtifact, + TestLibs: TestLibs as ContractArtifact, + TestSignatureValidator: TestSignatureValidator as ContractArtifact, + TestStaticCallReceiver: TestStaticCallReceiver as ContractArtifact, + Validator: Validator as ContractArtifact, + WETH9: WETH9 as ContractArtifact, + Wallet: Wallet as ContractArtifact, + Whitelist: Whitelist as ContractArtifact, + // Note(albrow): "as any" hack still required here because ZRXToken does not + // conform to the v2 artifact type. ZRXToken: (ZRXToken as any) as ContractArtifact, }; -- cgit v1.2.3