diff options
Diffstat (limited to 'packages/contracts/src')
83 files changed, 1190 insertions, 683 deletions
diff --git a/packages/contracts/src/2.0.0/forwarder/Forwarder.sol b/packages/contracts/src/2.0.0/forwarder/Forwarder.sol index 71a4aff13..fc17a4c72 100644 --- a/packages/contracts/src/2.0.0/forwarder/Forwarder.sol +++ b/packages/contracts/src/2.0.0/forwarder/Forwarder.sol @@ -16,24 +16,25 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; pragma experimental ABIEncoderV2; -import "./MixinWethFees.sol"; -import "./MixinMarketSellTokens.sol"; -import "./MixinMarketBuyTokens.sol"; +import "./MixinFees.sol"; +import "./MixinForwarderCore.sol"; import "./MixinConstants.sol"; -import "../utils/Ownable/Ownable.sol"; +import "./MixinMarketBuyZrx.sol"; +import "./MixinExpectedResults.sol"; +import "./MixinTransfer.sol"; + contract Forwarder is - Ownable, MixinConstants, - MixinWethFees, + MixinExpectedResults, + MixinFees, MixinMarketBuyZrx, - MixinMarketBuyTokens, - MixinMarketSellTokens + MixinTransfer, + MixinForwarderCore { - uint256 MAX_UINT = 2**256 - 1; constructor ( address _exchange, @@ -44,7 +45,6 @@ contract Forwarder is bytes memory _wethAssetData ) public - Ownable() MixinConstants( _exchange, _etherToken, @@ -52,30 +52,6 @@ contract Forwarder is _zrxAssetData, _wethAssetData ) - { - setERC20ProxyApproval(_erc20AssetProxyId); - } - - /// @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 Sets the allowances to the proxy for this contract - function setERC20ProxyApproval(bytes4 erc20AssetProxyId) - public - onlyOwner - { - address proxyAddress = EXCHANGE.getAssetProxy(erc20AssetProxyId); - if (proxyAddress != address(0)) { - ETHER_TOKEN.approve(proxyAddress, MAX_UINT); - ZRX_TOKEN.approve(proxyAddress, MAX_UINT); - } - } + MixinForwarderCore() + {} } diff --git a/packages/contracts/src/2.0.0/forwarder/MixinConstants.sol b/packages/contracts/src/2.0.0/forwarder/MixinConstants.sol index 18f2ba3bc..2b064d579 100644 --- a/packages/contracts/src/2.0.0/forwarder/MixinConstants.sol +++ b/packages/contracts/src/2.0.0/forwarder/MixinConstants.sol @@ -16,19 +16,14 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; -import "../protocol/Exchange/Exchange.sol"; -import { WETH9 as EtherToken } from "../tokens/WETH9/WETH9.sol"; -import "../tokens/ERC20Token/IERC20Token.sol"; +import "./mixins/MConstants.sol"; -contract MixinConstants { - Exchange EXCHANGE; - EtherToken ETHER_TOKEN; - IERC20Token ZRX_TOKEN; - bytes ZRX_ASSET_DATA; - bytes WETH_ASSET_DATA; +contract MixinConstants is + MConstants +{ constructor ( address _exchange, @@ -39,11 +34,10 @@ contract MixinConstants { ) public { - EXCHANGE = Exchange(_exchange); - ETHER_TOKEN = EtherToken(_etherToken); + EXCHANGE = IExchange(_exchange); + ETHER_TOKEN = IEtherToken(_etherToken); ZRX_TOKEN = IERC20Token(_zrxToken); ZRX_ASSET_DATA = _zrxAssetData; WETH_ASSET_DATA = _wethAssetData; } - -}
\ No newline at end of file +} diff --git a/packages/contracts/src/2.0.0/forwarder/MixinERC721.sol b/packages/contracts/src/2.0.0/forwarder/MixinERC721.sol deleted file mode 100644 index b2e8803a9..000000000 --- a/packages/contracts/src/2.0.0/forwarder/MixinERC721.sol +++ /dev/null @@ -1,64 +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/ERC721Token/IERC721Token.sol"; - -contract MixinERC721 { - - using LibBytes for bytes; - bytes4 constant ERC721_RECEIVED = bytes4(keccak256("onERC721Received(address,uint256,bytes)")); - bytes4 constant ERC721_RECEIVED_OPERATOR = bytes4(keccak256("onERC721Received(address,address,uint256,bytes)")); - - function onERC721Received(address, uint256, bytes memory) - public - pure - returns(bytes4) - { - return ERC721_RECEIVED; - } - - function onERC721Received(address, address, uint256, bytes memory) - public - pure - returns(bytes4) - { - return ERC721_RECEIVED_OPERATOR; - } - - function transferERC721Token( - bytes memory assetData, - address to - ) - internal - { - // Decode asset data. - address token = assetData.readAddress(16); - uint256 tokenId = assetData.readUint256(36); - bytes memory receiverData = assetData.readBytesWithLength(100); - IERC721Token(token).safeTransferFrom( - address(this), - to, - tokenId, - receiverData - ); - } -} diff --git a/packages/contracts/src/2.0.0/forwarder/MixinErrorMessages.sol b/packages/contracts/src/2.0.0/forwarder/MixinErrorMessages.sol index c2a6ea0a4..1b3e3f488 100644 --- a/packages/contracts/src/2.0.0/forwarder/MixinErrorMessages.sol +++ b/packages/contracts/src/2.0.0/forwarder/MixinErrorMessages.sol @@ -16,7 +16,9 @@ */ -pragma solidity ^0.4.24; +// 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 MixinErrorMessages { diff --git a/packages/contracts/src/2.0.0/forwarder/MixinExpectedResults.sol b/packages/contracts/src/2.0.0/forwarder/MixinExpectedResults.sol index 0bca7dc80..a575c9675 100644 --- a/packages/contracts/src/2.0.0/forwarder/MixinExpectedResults.sol +++ b/packages/contracts/src/2.0.0/forwarder/MixinExpectedResults.sol @@ -16,106 +16,71 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; pragma experimental ABIEncoderV2; import "../utils/LibBytes/LibBytes.sol"; import "../protocol/Exchange/libs/LibFillResults.sol"; import "../protocol/Exchange/libs/LibMath.sol"; import "../protocol/Exchange/libs/LibOrder.sol"; -import "./MixinConstants.sol"; +import "./mixins/MConstants.sol"; +import "./mixins/MExpectedResults.sol"; + contract MixinExpectedResults is LibMath, LibFillResults, - MixinConstants + MConstants, + MExpectedResults { - /// @dev Simulates the 0x Exchange fillOrder validation and calculations, without performing any state changes. - /// @param order An Order struct containing order specifications. - /// @param takerAssetFillAmount A number representing the amount of this order to fill. - /// @return fillResults Amounts filled and fees paid by maker and taker. - function calculateFillResults( - LibOrder.Order memory order, - uint256 takerAssetFillAmount - ) - internal - view - returns (FillResults memory fillResults) - { - LibOrder.OrderInfo memory orderInfo = EXCHANGE.getOrderInfo(order); - if (orderInfo.orderStatus != uint8(LibOrder.OrderStatus.FILLABLE)) { - return fillResults; - } - uint256 remainingTakerAssetAmount = safeSub(order.takerAssetAmount, orderInfo.orderTakerAssetFilledAmount); - uint256 takerAssetFilledAmount = min256(takerAssetFillAmount, remainingTakerAssetAmount); - - fillResults.takerAssetFilledAmount = takerAssetFilledAmount; - fillResults.makerAssetFilledAmount = getPartialAmount( - takerAssetFilledAmount, - order.takerAssetAmount, - order.makerAssetAmount - ); - fillResults.makerFeePaid = getPartialAmount( - takerAssetFilledAmount, - order.takerAssetAmount, - order.makerFee - ); - fillResults.takerFeePaid = getPartialAmount( - takerAssetFilledAmount, - order.takerAssetAmount, - order.takerFee - ); - return fillResults; - } - - /// @dev Calculates a FillResults total for selling takerAssetFillAmount over all orders. + /// @dev Calculates a total FillResults for buying makerAssetFillAmount over all orders. /// Including the fees required to be paid. /// @param orders An array of Order struct containing order specifications. - /// @param takerAssetFillAmount A number representing the amount of this order to fill. + /// @param makerAssetFillAmount A number representing the amount of this order to fill. /// @return totalFillResults Amounts filled and fees paid by maker and taker. - function calculateMarketSellResults( + function calculateMarketBuyResults( LibOrder.Order[] memory orders, - uint256 takerAssetFillAmount + uint256 makerAssetFillAmount ) - internal + public view returns (FillResults memory totalFillResults) { for (uint256 i = 0; i < orders.length; i++) { - uint256 remainingTakerAssetFillAmount = safeSub(takerAssetFillAmount, totalFillResults.takerAssetFilledAmount); + uint256 remainingMakerAssetFillAmount = safeSub(makerAssetFillAmount, totalFillResults.makerAssetFilledAmount); + uint256 remainingTakerAssetFillAmount = getPartialAmount( + orders[i].takerAssetAmount, + orders[i].makerAssetAmount, + remainingMakerAssetFillAmount + ); FillResults memory singleFillResult = calculateFillResults(orders[i], remainingTakerAssetFillAmount); addFillResults(totalFillResults, singleFillResult); - if (totalFillResults.takerAssetFilledAmount == takerAssetFillAmount) { + if (totalFillResults.makerAssetFilledAmount == makerAssetFillAmount) { break; } } return totalFillResults; } - /// @dev Calculates a total FillResults for buying makerAssetFillAmount over all orders. + /// @dev Calculates a FillResults total for selling takerAssetFillAmount over all orders. /// Including the fees required to be paid. /// @param orders An array of Order struct containing order specifications. - /// @param makerAssetFillAmount A number representing the amount of this order to fill. + /// @param takerAssetFillAmount A number representing the amount of this order to fill. /// @return totalFillResults Amounts filled and fees paid by maker and taker. - function calculateMarketBuyResults( + function calculateMarketSellResults( LibOrder.Order[] memory orders, - uint256 makerAssetFillAmount + uint256 takerAssetFillAmount ) public view returns (FillResults memory totalFillResults) { for (uint256 i = 0; i < orders.length; i++) { - uint256 remainingMakerAssetFillAmount = safeSub(makerAssetFillAmount, totalFillResults.makerAssetFilledAmount); - uint256 remainingTakerAssetFillAmount = getPartialAmount( - orders[i].takerAssetAmount, - orders[i].makerAssetAmount, - remainingMakerAssetFillAmount - ); + uint256 remainingTakerAssetFillAmount = safeSub(takerAssetFillAmount, totalFillResults.takerAssetFilledAmount); FillResults memory singleFillResult = calculateFillResults(orders[i], remainingTakerAssetFillAmount); addFillResults(totalFillResults, singleFillResult); - if (totalFillResults.makerAssetFilledAmount == makerAssetFillAmount) { + if (totalFillResults.takerAssetFilledAmount == takerAssetFillAmount) { break; } } @@ -155,4 +120,42 @@ contract MixinExpectedResults is } return totalFillResults; } + + /// @dev Simulates the 0x Exchange fillOrder validation and calculations, without performing any state changes. + /// @param order An Order struct containing order specifications. + /// @param takerAssetFillAmount A number representing the amount of this order to fill. + /// @return fillResults Amounts filled and fees paid by maker and taker. + function calculateFillResults( + LibOrder.Order memory order, + uint256 takerAssetFillAmount + ) + internal + view + returns (FillResults memory fillResults) + { + LibOrder.OrderInfo memory orderInfo = EXCHANGE.getOrderInfo(order); + if (orderInfo.orderStatus != uint8(LibOrder.OrderStatus.FILLABLE)) { + return fillResults; + } + uint256 remainingTakerAssetAmount = safeSub(order.takerAssetAmount, orderInfo.orderTakerAssetFilledAmount); + uint256 takerAssetFilledAmount = min256(takerAssetFillAmount, remainingTakerAssetAmount); + + fillResults.takerAssetFilledAmount = takerAssetFilledAmount; + fillResults.makerAssetFilledAmount = getPartialAmount( + takerAssetFilledAmount, + order.takerAssetAmount, + order.makerAssetAmount + ); + fillResults.makerFeePaid = getPartialAmount( + takerAssetFilledAmount, + order.takerAssetAmount, + order.makerFee + ); + fillResults.takerFeePaid = getPartialAmount( + takerAssetFilledAmount, + order.takerAssetAmount, + order.takerFee + ); + return fillResults; + } } diff --git a/packages/contracts/src/2.0.0/forwarder/MixinWethFees.sol b/packages/contracts/src/2.0.0/forwarder/MixinFees.sol index 9206c5fe0..8ea00a1d5 100644 --- a/packages/contracts/src/2.0.0/forwarder/MixinWethFees.sol +++ b/packages/contracts/src/2.0.0/forwarder/MixinFees.sol @@ -16,21 +16,33 @@ */ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; -import { WETH9 as EtherToken } from "../tokens/WETH9/WETH9.sol"; import "../protocol/Exchange/libs/LibMath.sol"; -import "./MixinConstants.sol"; +import "./mixins/MConstants.sol"; +import "./mixins/MFees.sol"; -contract MixinWethFees is + +contract MixinFees is LibMath, - MixinConstants + MConstants, + MFees { - uint16 constant public PERCENTAGE_DENOMINATOR = 10000; // 9800 == 98%, 10000 == 100% - uint16 constant public MAX_FEE = 1000; // 10% - uint16 constant public ALLOWABLE_EXCHANGE_PERCENTAGE = 9500; // 95% + uint16 constant public PERCENTAGE_DENOMINATOR = 10000; // 9800 == 98%, 10000 == 100% + uint16 constant public MAX_FEE = 1000; // 10% + uint16 constant public ALLOWABLE_EXCHANGE_PERCENTAGE = 9500; // 95% + + /// @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 Pays the feeRecipient feeProportion of the total takerEthAmount, denominated in ETH /// @param takerEthAmount The total amount that was transacted in WETH, fees are calculated from this value. diff --git a/packages/contracts/src/2.0.0/forwarder/MixinMarketBuyTokens.sol b/packages/contracts/src/2.0.0/forwarder/MixinForwarderCore.sol index ef06fe519..eadeaf5ba 100644 --- a/packages/contracts/src/2.0.0/forwarder/MixinMarketBuyTokens.sol +++ b/packages/contracts/src/2.0.0/forwarder/MixinForwarderCore.sol @@ -16,28 +16,122 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; pragma experimental ABIEncoderV2; import "../utils/LibBytes/LibBytes.sol"; -import "./MixinWethFees.sol"; -import "./MixinMarketBuyZrx.sol"; -import "./MixinExpectedResults.sol"; -import "./MixinERC20.sol"; -import "./MixinERC721.sol"; -import "./MixinConstants.sol"; +import "./mixins/MFees.sol"; +import "./mixins/MMarketBuyZrx.sol"; +import "./mixins/MExpectedResults.sol"; +import "./mixins/MTransfer.sol"; +import "./mixins/MConstants.sol"; +import "./mixins/MForwarderCore.sol"; import "../protocol/Exchange/libs/LibOrder.sol"; +import "../protocol/Exchange/libs/LibFillResults.sol"; -contract MixinMarketBuyTokens is - MixinConstants, - MixinWethFees, - MixinMarketBuyZrx, - MixinExpectedResults, - MixinERC20, - MixinERC721 + +contract MixinForwarderCore is + LibFillResults, + MConstants, + MExpectedResults, + MFees, + MMarketBuyZrx, + MTransfer, + MForwarderCore { - bytes4 public constant ERC20_DATA_ID = bytes4(keccak256("ERC20Token(address)")); - bytes4 public constant ERC721_DATA_ID = bytes4(keccak256("ERC721Token(address,uint256,bytes)")); + bytes4 constant internal ERC20_DATA_ID = bytes4(keccak256("ERC20Token(address)")); + bytes4 constant internal ERC721_DATA_ID = bytes4(keccak256("ERC721Token(address,uint256,bytes)")); + uint256 constant internal MAX_UINT = 2**256 - 1; + + 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 Market sells ETH for ERC20 tokens, performing fee abstraction if required. This does not support ERC721 tokens. This function is payable + /// and will convert all incoming ETH into WETH and perform the trade on behalf of the caller. + /// This function allows for a deduction of a proportion of incoming ETH sent to the feeRecipient. + /// The caller is sent all tokens from the operation. + /// If the purchased token amount does not meet an acceptable threshold then this function reverts. + /// @param orders An array of Order struct containing order specifications. + /// @param signatures An array of Proof that order has been created by maker. + /// @param feeOrders An array of Order struct containing order specifications for fees. + /// @param feeSignatures An array of Proof that order has been created by maker for the fee orders. + /// @param feeProportion A proportion deducted off the incoming ETH and sent to feeRecipient. The maximum value for this + /// is 1000, aka 10%. Supports up to 2 decimal places. I.e 0.59% is 59. + /// @param feeRecipient An address of the fee recipient whom receives feeProportion of ETH. + /// @return FillResults amounts filled and fees paid by maker and taker. + function marketSellEthForERC20( + LibOrder.Order[] memory orders, + bytes[] memory signatures, + LibOrder.Order[] memory feeOrders, + bytes[] memory feeSignatures, + uint16 feeProportion, + address feeRecipient + ) + public + payable + returns (FillResults memory totalFillResults) + { + uint256 takerEthAmount = msg.value; + require( + takerEthAmount > 0, + "VALUE_GREATER_THAN_ZERO" + ); + // Deduct the fee from the total amount of ETH sent in + uint256 ethFeeAmount = payEthFee( + takerEthAmount, + feeProportion, + feeRecipient + ); + uint256 wethSellAmount = safeSub(takerEthAmount, ethFeeAmount); + + // Deposit the remaining to be used for trading + ETHER_TOKEN.deposit.value(wethSellAmount)(); + // Populate the known assetData, as it is always WETH the caller can provide null bytes to save gas + // marketSellOrders fills the remaining + address makerTokenAddress = LibBytes.readAddress(orders[0].makerAssetData, 16); + orders[0].takerAssetData = WETH_ASSET_DATA; + if (makerTokenAddress == address(ZRX_TOKEN)) { + // If this is ZRX then we market sell from the orders, rather than a 2 step of buying ZRX fees from feeOrders + // then buying ZRX from orders + totalFillResults = marketSellEthForZRXInternal( + orders, + signatures, + wethSellAmount + ); + } else { + totalFillResults = marketSellEthForERC20Internal( + orders, + signatures, + feeOrders, + feeSignatures, + wethSellAmount + ); + } + // Prevent accidental WETH owned by this contract and it being spent + require( + takerEthAmount >= totalFillResults.takerAssetFilledAmount, + "INVALID_MSG_VALUE" + ); + // Ensure no WETH is left in this contract + require( + wethSellAmount == totalFillResults.takerAssetFilledAmount, + "UNACCEPTABLE_THRESHOLD" + ); + // Transfer all tokens to msg.sender + transferERC20Token( + makerTokenAddress, + msg.sender, + totalFillResults.makerAssetFilledAmount + ); + return totalFillResults; + } /// @dev Buys the exact amount of assets (ERC20 and ERC721), performing fee abstraction if required. /// All order assets must be of the same type. Deducts a proportional fee to fee recipient. @@ -62,8 +156,8 @@ contract MixinMarketBuyTokens is uint16 feeProportion, address feeRecipient ) - payable public + payable returns (FillResults memory totalFillResults) { uint256 takerEthAmount = msg.value; @@ -112,6 +206,85 @@ contract MixinMarketBuyTokens is return totalFillResults; } + /// @dev Market sells WETH for ERC20 tokens. + /// @param orders An array of Order struct containing order specifications. + /// @param signatures An array of Proof that order has been created by maker. + /// @param feeOrders An array of Order struct containing order specifications for fees. + /// @param feeSignatures An array of Proof that order has been created by maker for the fee orders. + /// @param wethSellAmount The amount of WETH to sell. + /// @return FillResults amounts filled and fees paid by maker and taker. + function marketSellEthForERC20Internal( + LibOrder.Order[] memory orders, + bytes[] memory signatures, + LibOrder.Order[] memory feeOrders, + bytes[] memory feeSignatures, + uint256 wethSellAmount + ) + internal + returns (FillResults memory totalFillResults) + { + uint256 remainingWethSellAmount = wethSellAmount; + FillResults memory calculatedMarketSellResults = calculateMarketSellResults(orders, wethSellAmount); + if (calculatedMarketSellResults.takerFeePaid > 0) { + // Fees are required for these orders. Buy enough ZRX to cover the future market buy + FillResults memory feeTokensResults = marketBuyZrxInternal( + feeOrders, + feeSignatures, + calculatedMarketSellResults.takerFeePaid + ); + // Ensure the token abstraction was fair if fees were proportionally too high, we fail + require( + isAcceptableThreshold( + wethSellAmount, + safeSub(wethSellAmount, feeTokensResults.takerAssetFilledAmount) + ), + "UNACCEPTABLE_THRESHOLD" + ); + remainingWethSellAmount = safeSub(remainingWethSellAmount, feeTokensResults.takerAssetFilledAmount); + totalFillResults.takerFeePaid = feeTokensResults.takerFeePaid; + totalFillResults.takerAssetFilledAmount = feeTokensResults.takerAssetFilledAmount; + } + // Make our market sell to buy the requested tokens with the remaining balance + FillResults memory requestedTokensResults = EXCHANGE.marketSellOrders( + orders, + remainingWethSellAmount, + signatures + ); + // Update our return FillResult with the market sell + addFillResults(totalFillResults, requestedTokensResults); + return totalFillResults; + } + + /// @dev Market sells WETH for ZRX tokens. + /// @param orders An array of Order struct containing order specifications. + /// @param signatures An array of Proof that order has been created by maker. + /// @param wethSellAmount The amount of WETH to sell. + /// @return FillResults amounts filled and fees paid by maker and taker. + function marketSellEthForZRXInternal( + LibOrder.Order[] memory orders, + bytes[] memory signatures, + uint256 wethSellAmount + ) + internal + returns (FillResults memory totalFillResults) + { + // Make our market sell to buy the requested tokens with the remaining balance + totalFillResults = EXCHANGE.marketSellOrders( + orders, + wethSellAmount, + signatures + ); + // Exchange does not special case ZRX in the makerAssetFilledAmount, if fees were deducted then using this amount + // for future transfers is invalid. + uint256 zrxAmountBought = safeSub(totalFillResults.makerAssetFilledAmount, totalFillResults.takerFeePaid); + require( + isAcceptableThreshold(totalFillResults.makerAssetFilledAmount, zrxAmountBought), + "UNACCEPTABLE_THRESHOLD" + ); + totalFillResults.makerAssetFilledAmount = zrxAmountBought; + return totalFillResults; + } + /// @dev Buys an exact amount of an ERC20 token using WETH. /// @param orders Orders to fill. The maker asset is the ERC20 token to buy. The taker asset is WETH. /// @param signatures Proof that the orders were created by their respective makers. @@ -126,8 +299,8 @@ contract MixinMarketBuyTokens is bytes[] memory feeSignatures, uint256 makerTokenFillAmount ) - private - returns (FillResults memory totalFillResults) + internal + returns (LibFillResults.FillResults memory totalFillResults) { // We read the maker token address to check if it is ZRX and later use it for transfer address makerTokenAddress = LibBytes.readAddress(orders[0].makerAssetData, 16); @@ -188,7 +361,7 @@ contract MixinMarketBuyTokens is ); } // Transfer all purchased tokens to msg.sender - transferToken( + transferERC20Token( makerTokenAddress, msg.sender, marketBuyResults.makerAssetFilledAmount @@ -208,8 +381,8 @@ contract MixinMarketBuyTokens is LibOrder.Order[] memory feeOrders, bytes[] memory feeSignatures ) - private - returns (FillResults memory totalFillResults) + internal + returns (LibFillResults.FillResults memory totalFillResults) { uint256 totalZrxFeeAmount; uint256 ordersLength = orders.length; diff --git a/packages/contracts/src/2.0.0/forwarder/MixinMarketBuyZrx.sol b/packages/contracts/src/2.0.0/forwarder/MixinMarketBuyZrx.sol index 4dbb34de3..e272f8aad 100644 --- a/packages/contracts/src/2.0.0/forwarder/MixinMarketBuyZrx.sol +++ b/packages/contracts/src/2.0.0/forwarder/MixinMarketBuyZrx.sol @@ -16,20 +16,23 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; pragma experimental ABIEncoderV2; -import "../protocol/Exchange/Exchange.sol"; import "../protocol/Exchange/libs/LibFillResults.sol"; import "../protocol/Exchange/libs/LibOrder.sol"; import "../protocol/Exchange/libs/LibMath.sol"; -import "./MixinConstants.sol"; +import "./mixins/MConstants.sol"; +import "./mixins/MMarketBuyZrx.sol"; + contract MixinMarketBuyZrx is LibMath, LibFillResults, - MixinConstants + MConstants, + MMarketBuyZrx { + /// @dev Buys zrxBuyAmount of ZRX fee tokens, taking into account the fees on buying fee tokens. This will guarantee /// At least zrxBuyAmount of ZRX fee tokens are purchased (sometimes slightly over due to rounding issues). /// It is possible that a request to buy 200 ZRX fee tokens will require purchasing 202 ZRX tokens diff --git a/packages/contracts/src/2.0.0/forwarder/MixinMarketSellTokens.sol b/packages/contracts/src/2.0.0/forwarder/MixinMarketSellTokens.sol deleted file mode 100644 index 8c9cdb8d5..000000000 --- a/packages/contracts/src/2.0.0/forwarder/MixinMarketSellTokens.sol +++ /dev/null @@ -1,196 +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 "../utils/LibBytes/LibBytes.sol"; -import "./MixinWethFees.sol"; -import "./MixinExpectedResults.sol"; -import "./MixinERC20.sol"; -import "./MixinConstants.sol"; -import "./MixinMarketBuyZrx.sol"; - -contract MixinMarketSellTokens is - MixinConstants, - MixinWethFees, - MixinMarketBuyZrx, - MixinExpectedResults, - MixinERC20 -{ - /// @dev Market sells ETH for ERC20 tokens, performing fee abstraction if required. This does not support ERC721 tokens. This function is payable - /// and will convert all incoming ETH into WETH and perform the trade on behalf of the caller. - /// This function allows for a deduction of a proportion of incoming ETH sent to the feeRecipient. - /// The caller is sent all tokens from the operation. - /// If the purchased token amount does not meet an acceptable threshold then this function reverts. - /// @param orders An array of Order struct containing order specifications. - /// @param signatures An array of Proof that order has been created by maker. - /// @param feeOrders An array of Order struct containing order specifications for fees. - /// @param feeSignatures An array of Proof that order has been created by maker for the fee orders. - /// @param feeProportion A proportion deducted off the incoming ETH and sent to feeRecipient. The maximum value for this - /// is 1000, aka 10%. Supports up to 2 decimal places. I.e 0.59% is 59. - /// @param feeRecipient An address of the fee recipient whom receives feeProportion of ETH. - /// @return FillResults amounts filled and fees paid by maker and taker. - function marketSellEthForERC20( - LibOrder.Order[] memory orders, - bytes[] memory signatures, - LibOrder.Order[] memory feeOrders, - bytes[] memory feeSignatures, - uint16 feeProportion, - address feeRecipient - ) - payable - public - returns (FillResults memory totalFillResults) - { - uint256 takerEthAmount = msg.value; - require( - takerEthAmount > 0, - "VALUE_GREATER_THAN_ZERO" - ); - // Deduct the fee from the total amount of ETH sent in - uint256 ethFeeAmount = payEthFee( - takerEthAmount, - feeProportion, - feeRecipient - ); - uint256 wethSellAmount = safeSub(takerEthAmount, ethFeeAmount); - - // Deposit the remaining to be used for trading - ETHER_TOKEN.deposit.value(wethSellAmount)(); - // Populate the known assetData, as it is always WETH the caller can provide null bytes to save gas - // marketSellOrders fills the remaining - address makerTokenAddress = LibBytes.readAddress(orders[0].makerAssetData, 16); - orders[0].takerAssetData = WETH_ASSET_DATA; - if (makerTokenAddress == address(ZRX_TOKEN)) { - // If this is ZRX then we market sell from the orders, rather than a 2 step of buying ZRX fees from feeOrders - // then buying ZRX from orders - totalFillResults = marketSellEthForZRXInternal( - orders, - signatures, - wethSellAmount - ); - } else { - totalFillResults = marketSellEthForERC20Internal( - orders, - signatures, - feeOrders, - feeSignatures, - wethSellAmount - ); - } - // Prevent accidental WETH owned by this contract and it being spent - require( - takerEthAmount >= totalFillResults.takerAssetFilledAmount, - "INVALID_MSG_VALUE" - ); - // Ensure no WETH is left in this contract - require( - wethSellAmount == totalFillResults.takerAssetFilledAmount, - "UNACCEPTABLE_THRESHOLD" - ); - // Transfer all tokens to msg.sender - transferToken( - makerTokenAddress, - msg.sender, - totalFillResults.makerAssetFilledAmount - ); - return totalFillResults; - } - - /// @dev Market sells WETH for ERC20 tokens. - /// @param orders An array of Order struct containing order specifications. - /// @param signatures An array of Proof that order has been created by maker. - /// @param feeOrders An array of Order struct containing order specifications for fees. - /// @param feeSignatures An array of Proof that order has been created by maker for the fee orders. - /// @param wethSellAmount The amount of WETH to sell. - /// @return FillResults amounts filled and fees paid by maker and taker. - function marketSellEthForERC20Internal( - LibOrder.Order[] memory orders, - bytes[] memory signatures, - LibOrder.Order[] memory feeOrders, - bytes[] memory feeSignatures, - uint256 wethSellAmount - ) - internal - returns (FillResults memory totalFillResults) - { - uint256 remainingWethSellAmount = wethSellAmount; - FillResults memory calculatedMarketSellResults = calculateMarketSellResults(orders, wethSellAmount); - if (calculatedMarketSellResults.takerFeePaid > 0) { - // Fees are required for these orders. Buy enough ZRX to cover the future market buy - FillResults memory feeTokensResults = marketBuyZrxInternal( - feeOrders, - feeSignatures, - calculatedMarketSellResults.takerFeePaid - ); - // Ensure the token abstraction was fair if fees were proportionally too high, we fail - require( - isAcceptableThreshold( - wethSellAmount, - safeSub(wethSellAmount, feeTokensResults.takerAssetFilledAmount) - ), - "UNACCEPTABLE_THRESHOLD" - ); - remainingWethSellAmount = safeSub(remainingWethSellAmount, feeTokensResults.takerAssetFilledAmount); - totalFillResults.takerFeePaid = feeTokensResults.takerFeePaid; - totalFillResults.takerAssetFilledAmount = feeTokensResults.takerAssetFilledAmount; - } - // Make our market sell to buy the requested tokens with the remaining balance - FillResults memory requestedTokensResults = EXCHANGE.marketSellOrders( - orders, - remainingWethSellAmount, - signatures - ); - // Update our return FillResult with the market sell - addFillResults(totalFillResults, requestedTokensResults); - return totalFillResults; - } - - /// @dev Market sells WETH for ZRX tokens. - /// @param orders An array of Order struct containing order specifications. - /// @param signatures An array of Proof that order has been created by maker. - /// @param wethSellAmount The amount of WETH to sell. - /// @return FillResults amounts filled and fees paid by maker and taker. - function marketSellEthForZRXInternal( - LibOrder.Order[] memory orders, - bytes[] memory signatures, - uint256 wethSellAmount - ) - internal - returns (FillResults memory totalFillResults) - { - // Make our market sell to buy the requested tokens with the remaining balance - totalFillResults = EXCHANGE.marketSellOrders( - orders, - wethSellAmount, - signatures - ); - // Exchange does not special case ZRX in the makerAssetFilledAmount, if fees were deducted then using this amount - // for future transfers is invalid. - uint256 zrxAmountBought = safeSub(totalFillResults.makerAssetFilledAmount, totalFillResults.takerFeePaid); - require( - isAcceptableThreshold(totalFillResults.makerAssetFilledAmount, zrxAmountBought), - "UNACCEPTABLE_THRESHOLD" - ); - totalFillResults.makerAssetFilledAmount = zrxAmountBought; - return totalFillResults; - } - -} diff --git a/packages/contracts/src/2.0.0/forwarder/MixinERC20.sol b/packages/contracts/src/2.0.0/forwarder/MixinTransfer.sol index 53d4116d7..6c49330f2 100644 --- a/packages/contracts/src/2.0.0/forwarder/MixinERC20.sol +++ b/packages/contracts/src/2.0.0/forwarder/MixinTransfer.sol @@ -16,15 +16,49 @@ */ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; -contract MixinERC20 { +import "../utils/LibBytes/LibBytes.sol"; +import "../tokens/ERC721Token/IERC721Token.sol"; +import "./mixins/MTransfer.sol"; - string constant ERROR_TRANSFER_FAILED = "TRANSFER_FAILED"; - bytes4 constant ERC20_TRANSFER_SELECTOR = bytes4(keccak256("transfer(address,uint256)")); - function transferToken( +contract MixinTransfer is + MTransfer +{ + + using LibBytes for bytes; + + bytes4 constant internal ERC20_TRANSFER_SELECTOR = bytes4(keccak256("transfer(address,uint256)")); + bytes4 constant internal ERC721_RECEIVED = bytes4(keccak256("onERC721Received(address,uint256,bytes)")); + bytes4 constant internal ERC721_RECEIVED_OPERATOR = bytes4(keccak256("onERC721Received(address,address,uint256,bytes)")); + + function onERC721Received( + address, + uint256, + bytes memory + ) + public + pure + returns(bytes4) + { + return ERC721_RECEIVED; + } + + function onERC721Received( + address, + address, + uint256, + bytes memory + ) + public + pure + returns(bytes4) + { + return ERC721_RECEIVED_OPERATOR; + } + + function transferERC20Token( address token, address to, uint256 amount @@ -65,4 +99,22 @@ contract MixinERC20 { "TRANSFER_FAILED" ); } + + function transferERC721Token( + bytes memory assetData, + address to + ) + internal + { + // Decode asset data. + address token = assetData.readAddress(16); + uint256 tokenId = assetData.readUint256(36); + bytes memory receiverData = assetData.readBytesWithLength(100); + IERC721Token(token).safeTransferFrom( + address(this), + to, + tokenId, + receiverData + ); + } } diff --git a/packages/contracts/src/2.0.0/forwarder/interfaces/IExpectedResults.sol b/packages/contracts/src/2.0.0/forwarder/interfaces/IExpectedResults.sol new file mode 100644 index 000000000..89187b750 --- /dev/null +++ b/packages/contracts/src/2.0.0/forwarder/interfaces/IExpectedResults.sol @@ -0,0 +1,66 @@ +/* + + 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/LibFillResults.sol"; +import "../../protocol/Exchange/libs/LibOrder.sol"; + + +contract IExpectedResults { + + /// @dev Calculates a total FillResults for buying makerAssetFillAmount over all orders. + /// Including the fees required to be paid. + /// @param orders An array of Order struct containing order specifications. + /// @param makerAssetFillAmount A number representing the amount of this order to fill. + /// @return totalFillResults Amounts filled and fees paid by maker and taker. + function calculateMarketBuyResults( + LibOrder.Order[] memory orders, + uint256 makerAssetFillAmount + ) + public + view + returns (LibFillResults.FillResults memory totalFillResults); + + /// @dev Calculates a FillResults total for selling takerAssetFillAmount over all orders. + /// Including the fees required to be paid. + /// @param orders An array of Order struct containing order specifications. + /// @param takerAssetFillAmount A number representing the amount of this order to fill. + /// @return totalFillResults Amounts filled and fees paid by maker and taker. + function calculateMarketSellResults( + LibOrder.Order[] memory orders, + uint256 takerAssetFillAmount + ) + public + view + returns (LibFillResults.FillResults memory totalFillResults); + + /// @dev Calculates fill results for buyFeeTokens. This handles fees on buying ZRX + /// so the end result is the expected amount of ZRX (not less after fees). + /// @param orders An array of Order struct containing order specifications. + /// @param zrxFillAmount A number representing the amount zrx to buy + /// @return totalFillResults Expected fill result amounts from buying fees + function calculateMarketBuyZrxResults( + LibOrder.Order[] memory orders, + uint256 zrxFillAmount + ) + public + view + returns (LibFillResults.FillResults memory totalFillResults); +} diff --git a/packages/contracts/src/2.0.0/forwarder/interfaces/IForwarder.sol b/packages/contracts/src/2.0.0/forwarder/interfaces/IForwarder.sol new file mode 100644 index 000000000..745dd29a9 --- /dev/null +++ b/packages/contracts/src/2.0.0/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 "./IExpectedResults.sol"; + + +// solhint-disable no-empty-blocks +contract IForwarder is + IForwarderCore, + IExpectedResults +{} diff --git a/packages/contracts/src/2.0.0/forwarder/interfaces/IForwarderCore.sol b/packages/contracts/src/2.0.0/forwarder/interfaces/IForwarderCore.sol new file mode 100644 index 000000000..7ac2a8af3 --- /dev/null +++ b/packages/contracts/src/2.0.0/forwarder/interfaces/IForwarderCore.sol @@ -0,0 +1,79 @@ +/* + + 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 Market sells ETH for ERC20 tokens, performing fee abstraction if required. This does not support ERC721 tokens. This function is payable + /// and will convert all incoming ETH into WETH and perform the trade on behalf of the caller. + /// This function allows for a deduction of a proportion of incoming ETH sent to the feeRecipient. + /// The caller is sent all tokens from the operation. + /// If the purchased token amount does not meet an acceptable threshold then this function reverts. + /// @param orders An array of Order struct containing order specifications. + /// @param signatures An array of Proof that order has been created by maker. + /// @param feeOrders An array of Order struct containing order specifications for fees. + /// @param feeSignatures An array of Proof that order has been created by maker for the fee orders. + /// @param feeProportion A proportion deducted off the incoming ETH and sent to feeRecipient. The maximum value for this + /// is 1000, aka 10%. Supports up to 2 decimal places. I.e 0.59% is 59. + /// @param feeRecipient An address of the fee recipient whom receives feeProportion of ETH. + /// @return FillResults amounts filled and fees paid by maker and taker. + function marketSellEthForERC20( + LibOrder.Order[] memory orders, + bytes[] memory signatures, + LibOrder.Order[] memory feeOrders, + bytes[] memory feeSignatures, + uint16 feeProportion, + address feeRecipient + ) + public + payable + returns (LibFillResults.FillResults memory totalFillResults); + + /// @dev Buys the exact amount of assets (ERC20 and ERC721), performing fee abstraction if required. + /// All order assets must be of the same type. Deducts a proportional fee to fee recipient. + /// This function is payable and will convert all incoming ETH into WETH and perform the trade on behalf of the caller. + /// The caller is sent all assets from the fill of orders. This function will revert unless the requested amount of assets are purchased. + /// Any excess ETH sent will be returned to the caller + /// @param orders An array of Order struct containing order specifications. + /// @param signatures An array of Proof that order has been created by maker. + /// @param feeOrders An array of Order struct containing order specifications for fees. + /// @param makerTokenFillAmount The amount of maker asset to buy. + /// @param feeSignatures An array of Proof that order has been created by maker for the fee orders. + /// @param feeProportion A proportion deducted off the ETH spent and sent to feeRecipient. The maximum value for this + /// is 1000, aka 10%. Supports up to 2 decimal places. I.e 0.59% is 59. + /// @param feeRecipient An address of the fee recipient whom receives feeProportion of ETH. + /// @return FillResults amounts filled and fees paid by maker and taker. + function marketBuyTokensWithEth( + LibOrder.Order[] memory orders, + bytes[] memory signatures, + LibOrder.Order[] memory feeOrders, + bytes[] memory feeSignatures, + uint256 makerTokenFillAmount, + uint16 feeProportion, + address feeRecipient + ) + public + payable + returns (LibFillResults.FillResults memory totalFillResults); +} diff --git a/packages/contracts/src/2.0.0/forwarder/mixins/MConstants.sol b/packages/contracts/src/2.0.0/forwarder/mixins/MConstants.sol new file mode 100644 index 000000000..348bf169e --- /dev/null +++ b/packages/contracts/src/2.0.0/forwarder/mixins/MConstants.sol @@ -0,0 +1,35 @@ +/* + + 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/IExchange.sol"; +import "../../tokens/EtherToken/IEtherToken.sol"; +import "../../tokens/ERC20Token/IERC20Token.sol"; + + +contract MConstants { + + // 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 +} diff --git a/packages/contracts/src/2.0.0/forwarder/mixins/MExpectedResults.sol b/packages/contracts/src/2.0.0/forwarder/mixins/MExpectedResults.sol new file mode 100644 index 000000000..cf03bb32e --- /dev/null +++ b/packages/contracts/src/2.0.0/forwarder/mixins/MExpectedResults.sol @@ -0,0 +1,42 @@ +/* + + 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/LibFillResults.sol"; +import "../../protocol/Exchange/libs/LibOrder.sol"; +import "../interfaces/IExpectedResults.sol"; + + +contract MExpectedResults is + IExpectedResults +{ + + /// @dev Simulates the 0x Exchange fillOrder validation and calculations, without performing any state changes. + /// @param order An Order struct containing order specifications. + /// @param takerAssetFillAmount A number representing the amount of this order to fill. + /// @return fillResults Amounts filled and fees paid by maker and taker. + function calculateFillResults( + LibOrder.Order memory order, + uint256 takerAssetFillAmount + ) + internal + view + returns (LibFillResults.FillResults memory fillResults); +} diff --git a/packages/contracts/src/2.0.0/forwarder/mixins/MFees.sol b/packages/contracts/src/2.0.0/forwarder/mixins/MFees.sol new file mode 100644 index 000000000..f332637ea --- /dev/null +++ b/packages/contracts/src/2.0.0/forwarder/mixins/MFees.sol @@ -0,0 +1,63 @@ +/* + + 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 MFees { + + /// @dev Pays the feeRecipient feeProportion of the total takerEthAmount, denominated in ETH + /// @param takerEthAmount The total amount that was transacted in WETH, fees are calculated from this value. + /// @param feeProportion The proportion of fees + /// @param feeRecipient The recipient of the fees + /// @return ethFeeAmount Amount of ETH paid to feeRecipient as fee. + function payEthFee( + uint256 takerEthAmount, + uint16 feeProportion, + address feeRecipient + ) + internal + returns (uint256 ethFeeAmount); + + /// @dev Withdraws the remaining WETH, deduct and pay fees from this amount based on the takerTokenAmount to the feeRecipient. + /// If a user overpaid ETH initially, the fees are calculated from the amount traded and deducted from withdrawAmount. + /// Any remaining ETH is sent back to the user. + /// @param ethWithdrawAmount The amount to withdraw from the WETH contract. + /// @param wethAmountSold The total amount that was transacted in WETH, fees are calculated from this value. + /// @param feeProportion The proportion of fees + /// @param feeRecipient The recipient of the fees + function withdrawPayAndDeductEthFee( + uint256 ethWithdrawAmount, + uint256 wethAmountSold, + uint16 feeProportion, + address feeRecipient + ) + internal; + + /// @dev Checks whether the amount of tokens sold against the amount of tokens requested + /// is within a certain threshold. This ensures the caller gets a fair deal when + /// performing any token fee abstraction. Threshold is 95%. If fee abstraction costs more than + /// 5% of the total transaction, we return false. + /// @param requestedSellAmount The amount the user requested, or sent in to a payable function + /// @param tokenAmountSold The amount of the token that was sold after fee abstraction + /// @return bool of whether this is within an acceptable threshold + function isAcceptableThreshold(uint256 requestedSellAmount, uint256 tokenAmountSold) + internal + pure + returns (bool); +} diff --git a/packages/contracts/src/2.0.0/forwarder/mixins/MForwarderCore.sol b/packages/contracts/src/2.0.0/forwarder/mixins/MForwarderCore.sol new file mode 100644 index 000000000..4a54e76b1 --- /dev/null +++ b/packages/contracts/src/2.0.0/forwarder/mixins/MForwarderCore.sol @@ -0,0 +1,92 @@ +/* + + 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"; +import "../interfaces/IForwarderCore.sol"; + + +contract MForwarderCore is + IForwarderCore +{ + + /// @dev Market sells WETH for ERC20 tokens. + /// @param orders An array of Order struct containing order specifications. + /// @param signatures An array of Proof that order has been created by maker. + /// @param feeOrders An array of Order struct containing order specifications for fees. + /// @param feeSignatures An array of Proof that order has been created by maker for the fee orders. + /// @param wethSellAmount The amount of WETH to sell. + /// @return FillResults amounts filled and fees paid by maker and taker. + function marketSellEthForERC20Internal( + LibOrder.Order[] memory orders, + bytes[] memory signatures, + LibOrder.Order[] memory feeOrders, + bytes[] memory feeSignatures, + uint256 wethSellAmount + ) + internal + returns (LibFillResults.FillResults memory totalFillResults); + + /// @dev Market sells WETH for ZRX tokens. + /// @param orders An array of Order struct containing order specifications. + /// @param signatures An array of Proof that order has been created by maker. + /// @param wethSellAmount The amount of WETH to sell. + /// @return FillResults amounts filled and fees paid by maker and taker. + function marketSellEthForZRXInternal( + LibOrder.Order[] memory orders, + bytes[] memory signatures, + uint256 wethSellAmount + ) + internal + returns (LibFillResults.FillResults memory totalFillResults); + + /// @dev Buys an exact amount of an ERC20 token using WETH. + /// @param orders Orders to fill. The maker asset is the ERC20 token to buy. The taker asset is WETH. + /// @param signatures Proof that the orders were created by their respective makers. + /// @param feeOrders to fill. The maker asset is ZRX and the taker asset is WETH. + /// @param feeSignatures Proof that the feeOrders were created by their respective makers. + /// @param makerTokenFillAmount Amount of the ERC20 token to buy. + /// @return totalFillResults Aggregated fill results of buying the ERC20 and ZRX tokens. + function marketBuyERC20TokensInternal( + LibOrder.Order[] memory orders, + bytes[] memory signatures, + LibOrder.Order[] memory feeOrders, + bytes[] memory feeSignatures, + uint256 makerTokenFillAmount + ) + internal + returns (LibFillResults.FillResults memory totalFillResults); + + /// @dev Buys an all of the ERC721 tokens in the orders. + /// @param orders Orders to fill. The maker asset is the ERC721 token to buy. The taker asset is WETH. + /// @param signatures Proof that the orders were created by their respective makers. + /// @param feeOrders to fill. The maker asset is ZRX and the taker asset is WETH. + /// @param feeSignatures Proof that the feeOrders were created by their respective makers. + /// @return totalFillResults Aggregated fill results of buying the ERC721 tokens and ZRX tokens. + function batchBuyERC721TokensInternal( + LibOrder.Order[] memory orders, + bytes[] memory signatures, + LibOrder.Order[] memory feeOrders, + bytes[] memory feeSignatures + ) + internal + returns (LibFillResults.FillResults memory totalFillResults); +} diff --git a/packages/contracts/src/2.0.0/forwarder/mixins/MMarketBuyZrx.sol b/packages/contracts/src/2.0.0/forwarder/mixins/MMarketBuyZrx.sol new file mode 100644 index 000000000..3501ef001 --- /dev/null +++ b/packages/contracts/src/2.0.0/forwarder/mixins/MMarketBuyZrx.sol @@ -0,0 +1,42 @@ +/* + + 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/LibFillResults.sol"; +import "../../protocol/Exchange/libs/LibOrder.sol"; + + +contract MMarketBuyZrx { + + /// @dev Buys zrxBuyAmount of ZRX fee tokens, taking into account the fees on buying fee tokens. This will guarantee + /// At least zrxBuyAmount of ZRX fee tokens are purchased (sometimes slightly over due to rounding issues). + /// It is possible that a request to buy 200 ZRX fee tokens will require purchasing 202 ZRX tokens + /// As 2 ZRX is required to purchase the 200 ZRX fee tokens. This guarantees at least 200 ZRX for future purchases. + /// @param orders An array of Order struct containing order specifications for fees. + /// @param signatures An array of Proof that order has been created by maker for the fee orders. + /// @param zrxBuyAmount The number of requested ZRX fee tokens. + /// @return totalFillResults Amounts filled and fees paid by maker and taker. makerTokenAmount is the zrx amount deducted of fees + function marketBuyZrxInternal( + LibOrder.Order[] memory orders, + bytes[] memory signatures, + uint256 zrxBuyAmount + ) + internal + returns (LibFillResults.FillResults memory totalFillResults); +} diff --git a/packages/contracts/src/2.0.0/forwarder/mixins/MTransfer.sol b/packages/contracts/src/2.0.0/forwarder/mixins/MTransfer.sol new file mode 100644 index 000000000..418a6288b --- /dev/null +++ b/packages/contracts/src/2.0.0/forwarder/mixins/MTransfer.sol @@ -0,0 +1,46 @@ +/* + + 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 MTransfer { + + function onERC721Received(address, uint256, bytes memory) + public + pure + returns(bytes4); + + function onERC721Received(address, address, uint256, bytes memory) + public + pure + returns(bytes4); + + function transferERC20Token( + address token, + address to, + uint256 amount + ) + internal; + + function transferERC721Token( + bytes memory assetData, + address to + ) + internal; +} diff --git a/packages/contracts/src/2.0.0/multisig/MultiSigWallet.sol b/packages/contracts/src/2.0.0/multisig/MultiSigWallet.sol index 1ceecd907..eb54fe047 100644 --- a/packages/contracts/src/2.0.0/multisig/MultiSigWallet.sol +++ b/packages/contracts/src/2.0.0/multisig/MultiSigWallet.sol @@ -1,6 +1,6 @@ +// solhint-disable pragma solidity ^0.4.10; -// solhint-disable /// @title Multisignature wallet - Allows multiple parties to agree on transactions before execution. /// @author Stefan George - <stefan.george@consensys.net> diff --git a/packages/contracts/src/2.0.0/multisig/MultiSigWalletWithTimeLock.sol b/packages/contracts/src/2.0.0/multisig/MultiSigWalletWithTimeLock.sol index d714b661d..8c5e6e1e6 100644 --- a/packages/contracts/src/2.0.0/multisig/MultiSigWalletWithTimeLock.sol +++ b/packages/contracts/src/2.0.0/multisig/MultiSigWalletWithTimeLock.sol @@ -16,11 +16,11 @@ */ +// solhint-disable pragma solidity ^0.4.10; import "./MultiSigWallet.sol"; -// solhint-disable /// @title Multisignature wallet with time lock- Allows multiple parties to execute a transaction after a time lock has passed. /// @author Amir Bandeali - <amir@0xProject.com> 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 aed62f54f..b5cec6b64 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC20Proxy.sol @@ -16,18 +16,19 @@ */ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; import "../../utils/LibBytes/LibBytes.sol"; import "./MixinAuthorizable.sol"; + contract ERC20Proxy is MixinAuthorizable { // Id of this proxy. - bytes4 constant PROXY_ID = bytes4(keccak256("ERC20Token(address)")); + bytes4 constant internal PROXY_ID = bytes4(keccak256("ERC20Token(address)")); + // solhint-disable-next-line payable-fallback function () external { 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 b73dc36cc..1f9958b43 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol @@ -16,18 +16,19 @@ */ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; import "../../utils/LibBytes/LibBytes.sol"; import "./MixinAuthorizable.sol"; + contract ERC721Proxy is MixinAuthorizable { // Id of this proxy. - bytes4 constant PROXY_ID = bytes4(keccak256("ERC721Token(address,uint256,bytes)")); + bytes4 constant internal PROXY_ID = bytes4(keccak256("ERC721Token(address,uint256,bytes)")); + // solhint-disable-next-line payable-fallback function () external { 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 5bc5f3a47..ff4660a31 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/MixinAuthorizable.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxy/MixinAuthorizable.sol @@ -16,8 +16,7 @@ */ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; import "../../utils/Ownable/Ownable.sol"; import "./mixins/MAuthorizable.sol"; 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 index b4ff2d900..3e76e38dd 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAssetData.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxy/interfaces/IAssetData.sol @@ -16,7 +16,8 @@ */ -pragma solidity ^0.4.23; +// solhint-disable +pragma solidity 0.4.24; // @dev Interface of the asset proxy's assetData. @@ -24,12 +25,10 @@ pragma solidity ^0.4.23; // This argument is ABI encoded as one of the methods of this interface. interface IAssetData { - // solhint-disable-next-line func-name-mixedcase function ERC20Token(address tokenContract) external pure; - // solhint-disable-next-line func-name-mixedcase function ERC721Token( address tokenContract, uint256 tokenId, 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 0ef1ed2e0..3651dd694 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 @@ -16,8 +16,7 @@ */ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; import "./IAuthorizable.sol"; 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 286db74aa..8fac43a47 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 @@ -16,8 +16,7 @@ */ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; import "../../../utils/Ownable/IOwnable.sol"; @@ -26,13 +25,6 @@ contract IAuthorizable is IOwnable { - /// @dev Gets all authorized addresses. - /// @return Array of authorized addresses. - function getAuthorizedAddresses() - external - view - returns (address[]); - /// @dev Authorizes an address. /// @param target Address to authorize. function addAuthorizedAddress(address target) @@ -51,4 +43,11 @@ contract IAuthorizable is 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 index 4b460ea9a..1d9a70cc1 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxy/libs/LibAssetProxyErrors.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxy/libs/LibAssetProxyErrors.sol @@ -16,7 +16,8 @@ */ -pragma solidity ^0.4.24; +// solhint-disable +pragma solidity 0.4.24; /// @dev This contract documents the revert reasons used in the AssetProxy contracts. 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 66c259a23..8afc8c8d8 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 @@ -16,8 +16,7 @@ */ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; import "../interfaces/IAuthorizable.sol"; 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 232155a6b..e7cf4ab5c 100644 --- a/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol +++ b/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol @@ -33,7 +33,7 @@ contract AssetProxyOwner is // if this contract is allowed to call the AssetProxy's `removeAuthorizedAddressAtIndex` method without a time lock. mapping (address => bool) public isAssetProxyRegistered; - bytes4 constant REMOVE_AUTHORIZED_ADDRESS_AT_INDEX_SELECTOR = bytes4(keccak256("removeAuthorizedAddressAtIndex(address,uint256)")); + 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. @@ -89,6 +89,7 @@ contract AssetProxyOwner is { Transaction storage tx = transactions[transactionId]; tx.executed = true; + // solhint-disable-next-line avoid-call-value if (tx.destination.call.value(tx.value)(tx.data)) Execution(transactionId); else { 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 effff82e0..7507d3da1 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/Exchange.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/Exchange.sol @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; pragma experimental ABIEncoderV2; import "./libs/LibConstants.sol"; @@ -28,6 +28,7 @@ import "./MixinTransactions.sol"; import "./MixinMatchOrders.sol"; +// solhint-disable no-empty-blocks contract Exchange is MixinExchangeCore, MixinMatchOrders, 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 dcfe9e1de..e9f882194 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinAssetProxyDispatcher.sol @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; import "../../utils/Ownable/Ownable.sol"; import "../../utils/LibBytes/LibBytes.sol"; @@ -151,6 +151,7 @@ contract MixinAssetProxyDispatcher is /////// 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) 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 9e63dc1c0..ec84b1e19 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; pragma experimental ABIEncoderV2; import "./libs/LibConstants.sol"; @@ -49,8 +49,6 @@ contract MixinExchangeCore is // Orders with specified senderAddress and with a salt less than their epoch to are considered cancelled mapping (address => mapping (address => uint256)) public orderEpoch; - ////// Core exchange functions ////// - /// @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. @@ -175,6 +173,7 @@ contract MixinExchangeCore is } // Validate order expiration + // solhint-disable-next-line not-rely-on-time if (block.timestamp >= order.expirationTimeSeconds) { orderInfo.orderStatus = uint8(OrderStatus.EXPIRED); return orderInfo; @@ -375,21 +374,19 @@ contract MixinExchangeCore is returns (FillResults memory fillResults) { // Compute proportional transfer amounts - // TODO: All three are multiplied by the same fraction. This can - // potentially be optimized. fillResults.takerAssetFilledAmount = takerAssetFilledAmount; fillResults.makerAssetFilledAmount = getPartialAmount( - fillResults.takerAssetFilledAmount, + takerAssetFilledAmount, order.takerAssetAmount, order.makerAssetAmount ); fillResults.makerFeePaid = getPartialAmount( - fillResults.takerAssetFilledAmount, + takerAssetFilledAmount, order.takerAssetAmount, order.makerFee ); fillResults.takerFeePaid = getPartialAmount( - fillResults.takerAssetFilledAmount, + 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 bfe838837..56b309a1b 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol @@ -11,7 +11,7 @@ limitations under the License. */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; pragma experimental ABIEncoderV2; import "./libs/LibConstants.sol"; @@ -41,7 +41,6 @@ contract MixinMatchOrders is /// @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. - /// TODO: Make this function external once supported by Solidity (See Solidity Issues #3199, #1603) function matchOrders( LibOrder.Order memory leftOrder, LibOrder.Order memory rightOrder, @@ -184,7 +183,6 @@ contract MixinMatchOrders is leftTakerAssetFilledAmount = leftTakerAssetAmountRemaining; // The right order receives an amount proportional to how much was spent. - // TODO: Can we ensure rounding error is in the correct direction? rightTakerAssetFilledAmount = getPartialAmount( rightOrder.takerAssetAmount, rightOrder.makerAssetAmount, @@ -195,7 +193,6 @@ contract MixinMatchOrders is rightTakerAssetFilledAmount = rightTakerAssetAmountRemaining; // The left order receives an amount proportional to how much was spent. - // TODO: Can we ensure rounding error is in the correct direction? leftTakerAssetFilledAmount = getPartialAmount( rightOrder.makerAssetAmount, rightOrder.takerAssetAmount, 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 78f13286f..ac7382715 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; import "../../utils/LibBytes/LibBytes.sol"; import "./mixins/MSignatureValidator.sol"; @@ -91,7 +91,6 @@ contract MixinSignatureValidator is view returns (bool isValid) { - // TODO: Domain separation: make hash depend on role. (Taker sig should not be valid as maker sig, etc.) require( signature.length > 0, "LENGTH_GREATER_THAN_0_REQUIRED" 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 3b18ac733..88d2da7d7 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol @@ -15,7 +15,7 @@ limitations under the License. */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; import "./libs/LibExchangeErrors.sol"; import "./mixins/MSignatureValidator.sol"; @@ -37,7 +37,7 @@ contract MixinTransactions is address public currentContextAddress; // Hash for the EIP712 ZeroEx Transaction Schema - bytes32 constant EIP712_ZEROEX_TRANSACTION_SCHEMA_HASH = keccak256(abi.encodePacked( + bytes32 constant internal EIP712_ZEROEX_TRANSACTION_SCHEMA_HASH = keccak256(abi.encodePacked( "ZeroExTransaction(", "uint256 salt,", "address signerAddress,", @@ -45,41 +45,6 @@ contract MixinTransactions is ")" )); - /// @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.encode( - // EIP712_ZEROEX_TRANSACTION_SCHEMA_HASH, - // salt, - // signerAddress, - // keccak256(data) - // )); - assembly { - let memPtr := mload(64) - mstore(memPtr, schemaHash) - mstore(add(memPtr, 32), salt) - mstore(add(memPtr, 64), and(signerAddress, 0xffffffffffffffffffffffffffffffffffffffff)) - mstore(add(memPtr, 96), dataHash) - result := keccak256(memPtr, 128) - } - - return result; - } - /// @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. @@ -134,9 +99,47 @@ contract MixinTransactions is "FAILED_EXECUTION" ); - // Reset current transaction signer - // TODO: Check if gas is paid when currentContextAddress is already 0. - currentContextAddress = address(0); + // 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.encode( + // EIP712_ZEROEX_TRANSACTION_SCHEMA_HASH, + // salt, + // signerAddress, + // keccak256(data) + // )); + + assembly { + let memPtr := mload(64) + mstore(memPtr, schemaHash) + mstore(add(memPtr, 32), salt) + mstore(add(memPtr, 64), and(signerAddress, 0xffffffffffffffffffffffffffffffffffffffff)) + mstore(add(memPtr, 96), dataHash) + 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`). 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 678d0252a..a16d2f897 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; pragma experimental ABIEncoderV2; import "./libs/LibMath.sol"; 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 index b73881c07..8db8d6f6c 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IAssetProxyDispatcher.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IAssetProxyDispatcher.sol @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; contract IAssetProxyDispatcher { 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 index 05e5dedf4..b92abba04 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IExchange.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IExchange.sol @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; pragma experimental ABIEncoderV2; import "./IExchangeCore.sol"; @@ -27,6 +27,7 @@ import "./IAssetProxyDispatcher.sol"; import "./IWrapperFunctions.sol"; +// solhint-disable no-empty-blocks contract IExchange is IExchangeCore, IMatchOrders, 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 index 2b573eb1a..9995e0385 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IExchangeCore.sol @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; pragma experimental ABIEncoderV2; import "../libs/LibOrder.sol"; 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 index d44116474..73447f3ae 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IMatchOrders.sol @@ -15,7 +15,7 @@ limitations under the License. */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; pragma experimental ABIEncoderV2; import "../libs/LibOrder.sol"; @@ -33,7 +33,6 @@ contract IMatchOrders { /// @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. - /// TODO: Make this function external once supported by Solidity (See Solidity Issues #3199, #1603) function matchOrders( LibOrder.Order memory leftOrder, LibOrder.Order memory rightOrder, 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 index c5a4a57e1..1fd0eccf0 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/ISignatureValidator.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/ISignatureValidator.sol @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; contract ISignatureValidator { 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 index aaaee389f..4446c55ce 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/ITransactions.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/ITransactions.sol @@ -15,7 +15,7 @@ limitations under the License. */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; contract ITransactions { 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 index 2c0a5dbe2..2dd69100c 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IValidator.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IValidator.sol @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.23; +pragma solidity 0.4.24; contract IValidator { 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 index c2db4a5b1..c97161ca6 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IWallet.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IWallet.sol @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; contract IWallet { 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 index 04257b883..ad7a56a06 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IWrapperFunctions.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/interfaces/IWrapperFunctions.sol @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; pragma experimental ABIEncoderV2; import "../libs/LibOrder.sol"; @@ -24,6 +24,7 @@ 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. 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 index 76200ec44..6918d755e 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibConstants.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibConstants.sol @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; contract LibConstants { 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 2bd7b60d4..1fc41dafd 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 @@ -16,18 +16,18 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; contract LibEIP712 { // EIP191 header for EIP712 prefix - string constant EIP191_HEADER = "\x19\x01"; + string constant internal EIP191_HEADER = "\x19\x01"; // EIP712 Domain Name value - string constant EIP712_DOMAIN_NAME = "0x Protocol"; + string constant internal EIP712_DOMAIN_NAME = "0x Protocol"; // EIP712 Domain Version value - string constant EIP712_DOMAIN_VERSION = "2"; + string constant internal EIP712_DOMAIN_VERSION = "2"; // Hash of the EIP712 Domain Separator Schema bytes32 public constant EIP712_DOMAIN_SEPARATOR_SCHEMA_HASH = keccak256(abi.encodePacked( 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 index 99f683e1a..a0f75bc06 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibExchangeErrors.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibExchangeErrors.sol @@ -16,7 +16,8 @@ */ -pragma solidity ^0.4.24; +// solhint-disable +pragma solidity 0.4.24; /// @dev This contract documents the revert reasons used in the Exchange contract. 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 35fa9ac0f..1b4181d94 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 @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; import "../../../utils/SafeMath/SafeMath.sol"; 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 9da784854..46c13d390 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 @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; import "../../../utils/SafeMath/SafeMath.sol"; 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 dda581d9f..68f2c8aed 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 @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; import "./LibEIP712.sol"; @@ -26,7 +26,7 @@ contract LibOrder is { // Hash for the EIP712 Order Schema - bytes32 constant EIP712_ORDER_SCHEMA_HASH = keccak256(abi.encodePacked( + bytes32 constant internal EIP712_ORDER_SCHEMA_HASH = keccak256(abi.encodePacked( "Order(", "address makerAddress,", "address takerAddress,", @@ -55,6 +55,7 @@ contract LibOrder is 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. @@ -69,6 +70,7 @@ contract LibOrder is 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. @@ -99,21 +101,23 @@ contract LibOrder is bytes32 schemaHash = EIP712_ORDER_SCHEMA_HASH; bytes32 makerAssetDataHash = keccak256(order.makerAssetData); bytes32 takerAssetDataHash = keccak256(order.takerAssetData); + // Assembly for more efficiently computing: - // keccak256(abi.encode( - // order.makerAddress, - // order.takerAddress, - // order.feeRecipientAddress, - // order.senderAddress, - // order.makerAssetAmount, - // order.takerAssetAmount, - // order.makerFee, - // order.takerFee, - // order.expirationTimeSeconds, - // order.salt, - // keccak256(order.makerAssetData), - // keccak256(order.takerAssetData) - // )); + // keccak256(abi.encode( + // order.makerAddress, + // order.takerAddress, + // order.feeRecipientAddress, + // order.senderAddress, + // order.makerAssetAmount, + // order.takerAssetAmount, + // order.makerFee, + // order.takerFee, + // order.expirationTimeSeconds, + // order.salt, + // keccak256(order.makerAssetData), + // keccak256(order.takerAssetData) + // )); + assembly { // Backup // solhint-disable-next-line space-after-comma 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 367b37e80..c6904300a 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 @@ -16,8 +16,7 @@ */ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; import "../interfaces/IAssetProxyDispatcher.sol"; 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 e28d9d25b..9e3b5a2e2 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 @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; pragma experimental ABIEncoderV2; import "../libs/LibOrder.sol"; @@ -102,7 +102,6 @@ contract MExchangeCore is 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. 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 289514b24..a31ec1585 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 @@ -15,7 +15,7 @@ limitations under the License. */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; pragma experimental ABIEncoderV2; import "../libs/LibOrder.sol"; 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 83650b4aa..f14f2ba00 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 @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; import "../interfaces/ISignatureValidator.sol"; 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 a9fa6d4e2..f2b5e4b16 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 @@ -15,7 +15,7 @@ limitations under the License. */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; import "../interfaces/ITransactions.sol"; diff --git a/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyERC20Token.sol b/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyERC20Token.sol index 7a2702449..97801166a 100644 --- a/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyERC20Token.sol +++ b/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyERC20Token.sol @@ -16,8 +16,7 @@ */ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; import "../Mintable/Mintable.sol"; import "../../utils/Ownable/Ownable.sol"; 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 b027ac960..5dce74a14 100644 --- a/packages/contracts/src/2.0.0/test/DummyERC721Receiver/DummyERC721Receiver.sol +++ b/packages/contracts/src/2.0.0/test/DummyERC721Receiver/DummyERC721Receiver.sol @@ -23,7 +23,7 @@ TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; import "../../tokens/ERC721Token/IERC721Receiver.sol"; diff --git a/packages/contracts/src/2.0.0/test/DummyERC721Token/DummyERC721Token.sol b/packages/contracts/src/2.0.0/test/DummyERC721Token/DummyERC721Token.sol index de76f10c5..627746a52 100644 --- a/packages/contracts/src/2.0.0/test/DummyERC721Token/DummyERC721Token.sol +++ b/packages/contracts/src/2.0.0/test/DummyERC721Token/DummyERC721Token.sol @@ -16,13 +16,13 @@ */ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; import "../../tokens/ERC721Token/ERC721Token.sol"; import "../../utils/Ownable/Ownable.sol"; +// solhint-disable no-empty-blocks contract DummyERC721Token is Ownable, ERC721Token diff --git a/packages/contracts/src/2.0.0/test/ExchangeWrapper/ExchangeWrapper.sol b/packages/contracts/src/2.0.0/test/ExchangeWrapper/ExchangeWrapper.sol index f20e2a944..2fa0e3c5e 100644 --- a/packages/contracts/src/2.0.0/test/ExchangeWrapper/ExchangeWrapper.sol +++ b/packages/contracts/src/2.0.0/test/ExchangeWrapper/ExchangeWrapper.sol @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; pragma experimental ABIEncoderV2; import "../../protocol/Exchange/interfaces/IExchange.sol"; @@ -27,7 +27,7 @@ contract ExchangeWrapper { // Exchange contract. // solhint-disable-next-line var-name-mixedcase - IExchange EXCHANGE; + IExchange internal EXCHANGE; constructor (address _exchange) public @@ -35,6 +35,35 @@ contract ExchangeWrapper { 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. @@ -68,33 +97,4 @@ contract ExchangeWrapper { takerSignature ); } - - /// @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 - ); - } } diff --git a/packages/contracts/src/2.0.0/test/Mintable/Mintable.sol b/packages/contracts/src/2.0.0/test/Mintable/Mintable.sol index bccb74ce8..767cc8d25 100644 --- a/packages/contracts/src/2.0.0/test/Mintable/Mintable.sol +++ b/packages/contracts/src/2.0.0/test/Mintable/Mintable.sol @@ -16,8 +16,7 @@ */ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; import "../../tokens/UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol"; import "../../utils/SafeMath/SafeMath.sol"; @@ -27,7 +26,10 @@ import "../../utils/SafeMath/SafeMath.sol"; * Mintable * Base contract that creates a mintable UnlimitedAllowanceToken */ -contract Mintable is UnlimitedAllowanceToken, SafeMath { +contract Mintable is + UnlimitedAllowanceToken, + SafeMath +{ function mint(uint256 _value) public { diff --git a/packages/contracts/src/2.0.0/test/TestAssetProxyDispatcher/TestAssetProxyDispatcher.sol b/packages/contracts/src/2.0.0/test/TestAssetProxyDispatcher/TestAssetProxyDispatcher.sol index be7fea7d3..07986f4bb 100644 --- a/packages/contracts/src/2.0.0/test/TestAssetProxyDispatcher/TestAssetProxyDispatcher.sol +++ b/packages/contracts/src/2.0.0/test/TestAssetProxyDispatcher/TestAssetProxyDispatcher.sol @@ -16,8 +16,7 @@ */ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; import "../../protocol/Exchange/MixinAssetProxyDispatcher.sol"; @@ -27,7 +26,8 @@ contract TestAssetProxyDispatcher is MixinAssetProxyDispatcher { bytes memory assetData, address from, address to, - uint256 amount) + 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 index ddcc62f35..d6b6b29f2 100644 --- a/packages/contracts/src/2.0.0/test/TestAssetProxyOwner/TestAssetProxyOwner.sol +++ b/packages/contracts/src/2.0.0/test/TestAssetProxyOwner/TestAssetProxyOwner.sol @@ -16,14 +16,16 @@ */ -pragma solidity ^0.4.24; +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, @@ -32,11 +34,11 @@ contract TestAssetProxyOwner is ) public AssetProxyOwner(_owners, _assetProxyContracts, _required, _secondsTimeLocked) - { - } + {} function testValidRemoveAuthorizedAddressAtIndexTx(uint256 id) public + view validRemoveAuthorizedAddressAtIndexTx(id) returns (bool) { diff --git a/packages/contracts/src/2.0.0/test/TestLibBytes/TestLibBytes.sol b/packages/contracts/src/2.0.0/test/TestLibBytes/TestLibBytes.sol index f52f635e1..00d861e61 100644 --- a/packages/contracts/src/2.0.0/test/TestLibBytes/TestLibBytes.sol +++ b/packages/contracts/src/2.0.0/test/TestLibBytes/TestLibBytes.sol @@ -16,8 +16,7 @@ */ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; import "../../utils/LibBytes/LibBytes.sol"; 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 df8eb55ce..5a349527b 100644 --- a/packages/contracts/src/2.0.0/test/TestLibs/TestLibs.sol +++ b/packages/contracts/src/2.0.0/test/TestLibs/TestLibs.sol @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; pragma experimental ABIEncoderV2; import "../../protocol/Exchange/libs/LibMath.sol"; @@ -32,7 +32,8 @@ contract TestLibs is function publicGetPartialAmount( uint256 numerator, uint256 denominator, - uint256 target) + uint256 target + ) public pure returns (uint256 partialAmount) @@ -48,7 +49,8 @@ contract TestLibs is function publicIsRoundingError( uint256 numerator, uint256 denominator, - uint256 target) + uint256 target + ) public pure returns (bool isError) 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 591ae3378..e1a610469 100644 --- a/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol +++ b/packages/contracts/src/2.0.0/test/TestSignatureValidator/TestSignatureValidator.sol @@ -16,8 +16,7 @@ */ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; import "../../protocol/Exchange/MixinSignatureValidator.sol"; import "../../protocol/Exchange/MixinTransactions.sol"; diff --git a/packages/contracts/src/2.0.0/test/TestValidator/TestValidator.sol b/packages/contracts/src/2.0.0/test/TestValidator/TestValidator.sol index 5076dedc9..6278aede0 100644 --- a/packages/contracts/src/2.0.0/test/TestValidator/TestValidator.sol +++ b/packages/contracts/src/2.0.0/test/TestValidator/TestValidator.sol @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; import "../../protocol/Exchange/interfaces/IValidator.sol"; @@ -27,7 +27,7 @@ contract TestValidator is // The single valid signer for this wallet. // solhint-disable-next-line var-name-mixedcase - address VALID_SIGNER; + address internal VALID_SIGNER; /// @dev constructs a new `TestValidator` with a single valid signer. /// @param validSigner The sole, valid signer. @@ -40,6 +40,7 @@ contract TestValidator is /// @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, @@ -51,4 +52,5 @@ contract TestValidator is { return (signerAddress == VALID_SIGNER); } + // solhint-enable no-unused-vars } diff --git a/packages/contracts/src/2.0.0/test/TestWallet/TestWallet.sol b/packages/contracts/src/2.0.0/test/TestWallet/TestWallet.sol index 07dfac588..0415823e3 100644 --- a/packages/contracts/src/2.0.0/test/TestWallet/TestWallet.sol +++ b/packages/contracts/src/2.0.0/test/TestWallet/TestWallet.sol @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; import "../../protocol/Exchange/interfaces/IWallet.sol"; import "../../utils/LibBytes/LibBytes.sol"; @@ -27,11 +27,9 @@ contract TestWallet is { using LibBytes for bytes; - string constant LENGTH_65_REQUIRED = "LENGTH_65_REQUIRED"; - // The owner of this wallet. // solhint-disable-next-line var-name-mixedcase - address WALLET_OWNER; + address internal WALLET_OWNER; /// @dev constructs a new `TestWallet` with a single owner. /// @param walletOwner The owner of this wallet. @@ -54,7 +52,7 @@ contract TestWallet is { require( eip712Signature.length == 65, - LENGTH_65_REQUIRED + "LENGTH_65_REQUIRED" ); uint8 v = uint8(eip712Signature[0]); diff --git a/packages/contracts/src/2.0.0/test/Whitelist/Whitelist.sol b/packages/contracts/src/2.0.0/test/Whitelist/Whitelist.sol index 07bd7d531..60cac26ea 100644 --- a/packages/contracts/src/2.0.0/test/Whitelist/Whitelist.sol +++ b/packages/contracts/src/2.0.0/test/Whitelist/Whitelist.sol @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; pragma experimental ABIEncoderV2; import "../../protocol/Exchange/interfaces/IExchange.sol"; @@ -27,28 +27,22 @@ import "../../utils/Ownable/Ownable.sol"; contract Whitelist is Ownable { - // Revert reasons - string constant MAKER_NOT_WHITELISTED = "MAKER_NOT_WHITELISTED"; // Maker address not whitelisted. - string constant TAKER_NOT_WHITELISTED = "TAKER_NOT_WHITELISTED"; // Taker address not whitelisted. - string constant INVALID_SENDER = "INVALID_SENDER"; // Sender must equal transaction origin. // Mapping of address => whitelist status. mapping (address => bool) public isWhitelisted; // Exchange contract. - // solhint-disable-next-line var-name-mixedcase - IExchange EXCHANGE; + // solhint-disable var-name-mixedcase + IExchange internal EXCHANGE; + bytes internal TX_ORIGIN_SIGNATURE; + // solhint-enable var-name-mixedcase - byte constant VALIDATOR_SIGNATURE_BYTE = "\x06"; - // solhint-disable-next-line var-name-mixedcase - bytes TX_ORIGIN_SIGNATURE; + byte constant internal VALIDATOR_SIGNATURE_BYTE = "\x06"; constructor (address _exchange) public { - // solhint-disable-next-line var-name-mixedcase EXCHANGE = IExchange(_exchange); - // solhint-disable-next-line var-name-mixedcase TX_ORIGIN_SIGNATURE = abi.encodePacked(address(this), VALIDATOR_SIGNATURE_BYTE); } @@ -65,6 +59,27 @@ contract Whitelist is 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 @@ -85,20 +100,21 @@ contract Whitelist is // This contract must be the entry point for the transaction. require( + // solhint-disable-next-line avoid-tx-origin takerAddress == tx.origin, - INVALID_SENDER + "INVALID_SENDER" ); // Check if maker is on the whitelist. require( isWhitelisted[order.makerAddress], - MAKER_NOT_WHITELISTED + "MAKER_NOT_WHITELISTED" ); // Check if taker is on the whitelist. require( isWhitelisted[takerAddress], - TAKER_NOT_WHITELISTED + "TAKER_NOT_WHITELISTED" ); // Encode arguments into byte array. @@ -117,22 +133,4 @@ contract Whitelist is TX_ORIGIN_SIGNATURE ); } - - /// @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. - function isValidSignature( - bytes32 hash, - address signerAddress, - bytes signature - ) - external - view - returns (bool isValid) - { - return signerAddress == tx.origin; - } } 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 59dc7d7bf..d9950145d 100644 --- a/packages/contracts/src/2.0.0/tokens/ERC20Token/ERC20Token.sol +++ b/packages/contracts/src/2.0.0/tokens/ERC20Token/ERC20Token.sol @@ -16,20 +16,15 @@ */ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; import "./IERC20Token.sol"; contract ERC20Token is IERC20Token { - string constant INSUFFICIENT_BALANCE = "ERC20_INSUFFICIENT_BALANCE"; - string constant INSUFFICIENT_ALLOWANCE = "ERC20_INSUFFICIENT_ALLOWANCE"; - string constant OVERFLOW = "Transfer would result in an overflow."; - - mapping (address => uint256) balances; - mapping (address => mapping (address => uint256)) allowed; + mapping (address => uint256) internal balances; + mapping (address => mapping (address => uint256)) internal allowed; uint256 public totalSupply; @@ -39,11 +34,11 @@ contract ERC20Token is IERC20Token { { require( balances[msg.sender] >= _value, - INSUFFICIENT_BALANCE + "ERC20_INSUFFICIENT_BALANCE" ); require( balances[_to] + _value >= balances[_to], - OVERFLOW + "OVERFLOW" ); balances[msg.sender] -= _value; balances[_to] += _value; @@ -57,15 +52,15 @@ contract ERC20Token is IERC20Token { { require( balances[_from] >= _value, - INSUFFICIENT_BALANCE + "ERC20_INSUFFICIENT_BALANCE" ); require( allowed[_from][msg.sender] >= _value, - INSUFFICIENT_ALLOWANCE + "ERC20_INSUFFICIENT_ALLOWANCE" ); require( balances[_to] + _value >= balances[_to], - OVERFLOW + "OVERFLOW" ); balances[_to] += _value; balances[_from] -= _value; @@ -84,7 +79,8 @@ contract ERC20Token is IERC20Token { } function balanceOf(address _owner) - public view + public + view returns (uint256) { return balances[_owner]; diff --git a/packages/contracts/src/2.0.0/tokens/ERC20Token/IERC20Token.sol b/packages/contracts/src/2.0.0/tokens/ERC20Token/IERC20Token.sol index de4ed2af9..5ee5e1011 100644 --- a/packages/contracts/src/2.0.0/tokens/ERC20Token/IERC20Token.sol +++ b/packages/contracts/src/2.0.0/tokens/ERC20Token/IERC20Token.sol @@ -16,8 +16,7 @@ */ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; contract IERC20Token { @@ -60,6 +59,7 @@ contract IERC20Token { public view returns (uint256); + // solhint-disable-next-line no-simple-event-func-name event Transfer( address indexed _from, address indexed _to, diff --git a/packages/contracts/src/2.0.0/tokens/ERC721Token/ERC721Token.sol b/packages/contracts/src/2.0.0/tokens/ERC721Token/ERC721Token.sol index defb506a8..60603aa19 100644 --- a/packages/contracts/src/2.0.0/tokens/ERC721Token/ERC721Token.sol +++ b/packages/contracts/src/2.0.0/tokens/ERC721Token/ERC721Token.sol @@ -23,7 +23,7 @@ TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; import "./IERC721Token.sol"; import "./IERC721Receiver.sol"; @@ -41,7 +41,7 @@ contract ERC721Token is { // Equals to `bytes4(keccak256("onERC721Received(address,uint256,bytes)"))` // which can be also obtained as `ERC721Receiver(0).onERC721Received.selector` - bytes4 constant ERC721_RECEIVED = 0xf0b9e5ba; + bytes4 constant internal ERC721_RECEIVED = 0xf0b9e5ba; // Mapping from token ID to owner mapping (uint256 => address) internal tokenOwner; @@ -73,7 +73,7 @@ contract ERC721Token is _; } - function ERC721Token( + constructor ( string _name, string _symbol) public diff --git a/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Receiver.sol b/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Receiver.sol index f72c75638..f2e8f3c88 100644 --- a/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Receiver.sol +++ b/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Receiver.sol @@ -23,7 +23,7 @@ TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; /** @@ -38,7 +38,7 @@ contract IERC721Receiver { * Equals to `bytes4(keccak256("onERC721Received(address,uint256,bytes)"))`, * which can be also obtained as `ERC721Receiver(0).onERC721Received.selector` */ - bytes4 constant ERC721_RECEIVED = 0xf0b9e5ba; + bytes4 constant internal ERC721_RECEIVED = 0xf0b9e5ba; /** * @notice Handle the receipt of an NFT diff --git a/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Token.sol b/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Token.sol index 0d64ee861..4d57ece38 100644 --- a/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Token.sol +++ b/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Token.sol @@ -23,7 +23,7 @@ TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; /** @@ -40,11 +40,13 @@ contract IERC721Token { address indexed _to, uint256 _tokenId ); + event Approval( address indexed _owner, address indexed _approved, uint256 _tokenId ); + event ApprovalForAll( address indexed _owner, address indexed _operator, @@ -55,6 +57,7 @@ contract IERC721Token { public view returns (string); + function symbol() public view @@ -64,10 +67,12 @@ contract IERC721Token { public view returns (uint256 _balance); + function ownerOf(uint256 _tokenId) public view returns (address _owner); + function exists(uint256 _tokenId) public view @@ -75,6 +80,7 @@ contract IERC721Token { function approve(address _to, uint256 _tokenId) public; + function getApproved(uint256 _tokenId) public view @@ -82,6 +88,7 @@ contract IERC721Token { function setApprovalForAll(address _operator, bool _approved) public; + function isApprovedForAll(address _owner, address _operator) public view @@ -90,17 +97,22 @@ contract IERC721Token { function transferFrom( address _from, address _to, - uint256 _tokenId) + uint256 _tokenId + ) public; + function safeTransferFrom( address _from, address _to, - uint256 _tokenId) + uint256 _tokenId + ) public; + function safeTransferFrom( address _from, address _to, uint256 _tokenId, - bytes _data) + bytes _data + ) public; } diff --git a/packages/contracts/src/2.0.0/tokens/EtherToken/IEtherToken.sol b/packages/contracts/src/2.0.0/tokens/EtherToken/IEtherToken.sol new file mode 100644 index 000000000..9e2e68766 --- /dev/null +++ b/packages/contracts/src/2.0.0/tokens/EtherToken/IEtherToken.sol @@ -0,0 +1,33 @@ +/* + + 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/WETH9/WETH9.sol b/packages/contracts/src/2.0.0/tokens/EtherToken/WETH9.sol index 378a507b9..1fdb04de5 100644 --- a/packages/contracts/src/2.0.0/tokens/WETH9/WETH9.sol +++ b/packages/contracts/src/2.0.0/tokens/EtherToken/WETH9.sol @@ -13,6 +13,7 @@ // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. +// solhint-disable pragma solidity ^0.4.18; diff --git a/packages/contracts/src/2.0.0/tokens/UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol b/packages/contracts/src/2.0.0/tokens/UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol index 845324e4e..9feb5c914 100644 --- a/packages/contracts/src/2.0.0/tokens/UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol +++ b/packages/contracts/src/2.0.0/tokens/UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol @@ -16,15 +16,14 @@ */ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; import "../ERC20Token/ERC20Token.sol"; contract UnlimitedAllowanceToken is ERC20Token { - uint256 constant MAX_UINT = 2**256 - 1; + 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. @@ -38,15 +37,15 @@ contract UnlimitedAllowanceToken is ERC20Token { uint256 allowance = allowed[_from][msg.sender]; require( balances[_from] >= _value, - INSUFFICIENT_BALANCE + "ERC20_INSUFFICIENT_BALANCE" ); require( allowance >= _value, - INSUFFICIENT_ALLOWANCE + "ERC20_INSUFFICIENT_ALLOWANCE" ); require( balances[_to] + _value >= balances[_to], - OVERFLOW + "OVERFLOW" ); balances[_to] += _value; balances[_from] -= _value; 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 ed0670072..28c0b2fb3 100644 --- a/packages/contracts/src/2.0.0/tokens/ZRXToken/ZRXToken.sol +++ b/packages/contracts/src/2.0.0/tokens/ZRXToken/ZRXToken.sol @@ -16,20 +16,24 @@ */ -pragma solidity ^0.4.11; +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; uint 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() { + 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 index c2fff5efb..01d34fa8f 100644 --- a/packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol +++ b/packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol @@ -16,7 +16,7 @@ */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; library LibBytes { @@ -115,6 +115,7 @@ library LibBytes { // 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) @@ -145,6 +146,7 @@ library LibBytes { // 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) @@ -157,13 +159,17 @@ library LibBytes { } } } - + /// @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) + function slice( + bytes memory b, + uint256 from, + uint256 to + ) internal pure returns (bytes memory result) @@ -192,7 +198,11 @@ library LibBytes { /// @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) + function sliceDestructive( + bytes memory b, + uint256 from, + uint256 to + ) internal pure returns (bytes memory result) @@ -344,7 +354,10 @@ library LibBytes { // 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) + let neighbors := and( + mload(add(b, index)), + 0xffffffffffffffffffffffff0000000000000000000000000000000000000000 + ) // Make sure input address is clean. // (Solidity does not guarantee this) @@ -509,7 +522,7 @@ library LibBytes { // Assert length of <b> is valid, given // length of input require( - b.length >= index + 32 /* 32 bytes to store length */ + input.length, + b.length >= index + 32 + input.length, // 32 bytes to store length "GREATER_OR_EQUAL_TO_NESTED_BYTES_LENGTH_REQUIRED" ); 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 e77680903..116b8dc89 100644 --- a/packages/contracts/src/2.0.0/utils/Ownable/IOwnable.sol +++ b/packages/contracts/src/2.0.0/utils/Ownable/IOwnable.sol @@ -1,5 +1,4 @@ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; /* * Ownable 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 489793a95..aca65aad2 100644 --- a/packages/contracts/src/2.0.0/utils/Ownable/Ownable.sol +++ b/packages/contracts/src/2.0.0/utils/Ownable/Ownable.sol @@ -1,5 +1,4 @@ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; /* * Ownable 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 ec0a3fe76..4413244db 100644 --- a/packages/contracts/src/2.0.0/utils/SafeMath/SafeMath.sol +++ b/packages/contracts/src/2.0.0/utils/SafeMath/SafeMath.sol @@ -1,28 +1,27 @@ -pragma solidity ^0.4.24; -pragma experimental ABIEncoderV2; +pragma solidity 0.4.24; contract SafeMath { - function safeMul(uint a, uint b) + function safeMul(uint256 a, uint256 b) internal pure returns (uint256) { - uint c = a * b; + uint256 c = a * b; assert(a == 0 || c / a == b); return c; } - function safeDiv(uint a, uint b) + function safeDiv(uint256 a, uint256 b) internal pure returns (uint256) { - uint c = a / b; + uint256 c = a / b; return c; } - function safeSub(uint a, uint b) + function safeSub(uint256 a, uint256 b) internal pure returns (uint256) @@ -31,12 +30,12 @@ contract SafeMath { return a - b; } - function safeAdd(uint a, uint b) + function safeAdd(uint256 a, uint256 b) internal pure returns (uint256) { - uint c = a + b; + uint256 c = a + b; assert(c >= a); return c; } |