diff options
Diffstat (limited to 'packages/contracts')
6 files changed, 148 insertions, 41 deletions
diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol index f3a0591b2..d00323b15 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinExchangeCore.sol @@ -19,6 +19,7 @@ pragma solidity 0.4.24; pragma experimental ABIEncoderV2; +import "../../utils/ReentrancyGuard/ReentrancyGuard.sol"; import "./libs/LibConstants.sol"; import "./libs/LibFillResults.sol"; import "./libs/LibOrder.sol"; @@ -30,6 +31,7 @@ import "./mixins/MAssetProxyDispatcher.sol"; contract MixinExchangeCore is + ReentrancyGuard, LibConstants, LibMath, LibOrder, @@ -86,43 +88,14 @@ contract MixinExchangeCore is bytes memory signature ) public + nonReentrant returns (FillResults memory fillResults) { - // Fetch order info - OrderInfo memory orderInfo = getOrderInfo(order); - - // Fetch taker address - address takerAddress = getCurrentContextAddress(); - - // Get amount of takerAsset to fill - uint256 remainingTakerAssetAmount = safeSub(order.takerAssetAmount, orderInfo.orderTakerAssetFilledAmount); - uint256 takerAssetFilledAmount = min256(takerAssetFillAmount, remainingTakerAssetAmount); - - // Validate context - assertValidFill( + fillResults = fillOrderInternal( order, - orderInfo, - takerAddress, takerAssetFillAmount, - takerAssetFilledAmount, signature ); - - // Compute proportional fill amounts - fillResults = calculateFillResults(order, takerAssetFilledAmount); - - // Update exchange internal state - updateFilledState( - order, - takerAddress, - orderInfo.orderHash, - orderInfo.orderTakerAssetFilledAmount, - fillResults - ); - - // Settle order - settleOrder(order, takerAddress, fillResults); - return fillResults; } @@ -203,6 +176,57 @@ contract MixinExchangeCore is return orderInfo; } + /// @dev Fills the input order. + /// @param order Order struct containing order specifications. + /// @param takerAssetFillAmount Desired amount of takerAsset to sell. + /// @param signature Proof that order has been created by maker. + /// @return Amounts filled and fees paid by maker and taker. + function fillOrderInternal( + Order memory order, + uint256 takerAssetFillAmount, + bytes memory signature + ) + internal + returns (FillResults memory fillResults) + { + // Fetch order info + OrderInfo memory orderInfo = getOrderInfo(order); + + // Fetch taker address + address takerAddress = getCurrentContextAddress(); + + // Get amount of takerAsset to fill + uint256 remainingTakerAssetAmount = safeSub(order.takerAssetAmount, orderInfo.orderTakerAssetFilledAmount); + uint256 takerAssetFilledAmount = min256(takerAssetFillAmount, remainingTakerAssetAmount); + + // Validate context + assertValidFill( + order, + orderInfo, + takerAddress, + takerAssetFillAmount, + takerAssetFilledAmount, + signature + ); + + // Compute proportional fill amounts + fillResults = calculateFillResults(order, takerAssetFilledAmount); + + // Update exchange internal state + updateFilledState( + order, + takerAddress, + orderInfo.orderHash, + orderInfo.orderTakerAssetFilledAmount, + fillResults + ); + + // Settle order + settleOrder(order, takerAddress, fillResults); + + return fillResults; + } + /// @dev Updates state with results of a fill order. /// @param order that was filled. /// @param takerAddress Address of taker who filled the order. diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol index 20f4b1c33..25220a673 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinMatchOrders.sol @@ -14,6 +14,7 @@ pragma solidity 0.4.24; pragma experimental ABIEncoderV2; +import "../../utils/ReentrancyGuard/ReentrancyGuard.sol"; import "./libs/LibConstants.sol"; import "./libs/LibMath.sol"; import "./libs/LibOrder.sol"; @@ -25,6 +26,7 @@ import "./mixins/MAssetProxyDispatcher.sol"; contract MixinMatchOrders is + ReentrancyGuard, LibConstants, LibMath, MAssetProxyDispatcher, @@ -48,6 +50,7 @@ contract MixinMatchOrders is bytes memory rightSignature ) public + nonReentrant returns (LibFillResults.MatchedFillResults memory matchedFillResults) { // We assume that rightOrder.takerAssetData == leftOrder.makerAssetData and rightOrder.makerAssetData == leftOrder.takerAssetData. diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol index 1b77cfbcb..ff1cb6995 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol @@ -19,14 +19,17 @@ pragma solidity 0.4.24; pragma experimental ABIEncoderV2; +import "../../utils/ReentrancyGuard/ReentrancyGuard.sol"; import "./libs/LibMath.sol"; import "./libs/LibOrder.sol"; import "./libs/LibFillResults.sol"; import "./libs/LibAbiEncoder.sol"; import "./mixins/MExchangeCore.sol"; +import "./mixins/MWrapperFunctions.sol"; contract MixinWrapperFunctions is + ReentrancyGuard, LibMath, LibFillResults, LibAbiEncoder, @@ -43,17 +46,14 @@ contract MixinWrapperFunctions is bytes memory signature ) public + nonReentrant returns (FillResults memory fillResults) { - fillResults = fillOrder( + fillResults = fillOrKillOrderInternal( order, takerAssetFillAmount, signature ); - require( - fillResults.takerAssetFilledAmount == takerAssetFillAmount, - "COMPLETE_FILL_FAILED" - ); return fillResults; } @@ -117,11 +117,12 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public + nonReentrant returns (FillResults memory totalFillResults) { uint256 ordersLength = orders.length; for (uint256 i = 0; i != ordersLength; i++) { - FillResults memory singleFillResults = fillOrder( + FillResults memory singleFillResults = fillOrderInternal( orders[i], takerAssetFillAmounts[i], signatures[i] @@ -143,11 +144,12 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public + nonReentrant returns (FillResults memory totalFillResults) { uint256 ordersLength = orders.length; for (uint256 i = 0; i != ordersLength; i++) { - FillResults memory singleFillResults = fillOrKillOrder( + FillResults memory singleFillResults = fillOrKillOrderInternal( orders[i], takerAssetFillAmounts[i], signatures[i] @@ -195,6 +197,7 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public + nonReentrant returns (FillResults memory totalFillResults) { bytes memory takerAssetData = orders[0].takerAssetData; @@ -210,7 +213,7 @@ contract MixinWrapperFunctions is uint256 remainingTakerAssetFillAmount = safeSub(takerAssetFillAmount, totalFillResults.takerAssetFilledAmount); // Attempt to sell the remaining amount of takerAsset - FillResults memory singleFillResults = fillOrder( + FillResults memory singleFillResults = fillOrderInternal( orders[i], remainingTakerAssetFillAmount, signatures[i] @@ -282,6 +285,7 @@ contract MixinWrapperFunctions is bytes[] memory signatures ) public + nonReentrant returns (FillResults memory totalFillResults) { bytes memory makerAssetData = orders[0].makerAssetData; @@ -305,7 +309,7 @@ contract MixinWrapperFunctions is ); // Attempt to sell the remaining amount of takerAsset - FillResults memory singleFillResults = fillOrder( + FillResults memory singleFillResults = fillOrderInternal( orders[i], remainingTakerAssetFillAmount, signatures[i] @@ -400,4 +404,28 @@ contract MixinWrapperFunctions is } return ordersInfo; } + + /// @dev Fills the input order. Reverts if exact takerAssetFillAmount not filled. + /// @param order Order struct containing order specifications. + /// @param takerAssetFillAmount Desired amount of takerAsset to sell. + /// @param signature Proof that order has been created by maker. + function fillOrKillOrderInternal( + LibOrder.Order memory order, + uint256 takerAssetFillAmount, + bytes memory signature + ) + internal + returns (FillResults memory fillResults) + { + fillResults = fillOrderInternal( + order, + takerAssetFillAmount, + signature + ); + require( + fillResults.takerAssetFilledAmount == takerAssetFillAmount, + "COMPLETE_FILL_FAILED" + ); + return fillResults; + } } diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol index c165b647c..41832fe4b 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MExchangeCore.sol @@ -59,6 +59,19 @@ contract MExchangeCore is uint256 orderEpoch // Orders with specified makerAddress and senderAddress with a salt less than this value are considered cancelled. ); + /// @dev Fills the input order. + /// @param order Order struct containing order specifications. + /// @param takerAssetFillAmount Desired amount of takerAsset to sell. + /// @param signature Proof that order has been created by maker. + /// @return Amounts filled and fees paid by maker and taker. + function fillOrderInternal( + LibOrder.Order memory order, + uint256 takerAssetFillAmount, + bytes memory signature + ) + internal + returns (LibFillResults.FillResults memory fillResults); + /// @dev Updates state with results of a fill order. /// @param order that was filled. /// @param takerAddress Address of taker who filled the order. diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MWrapperFunctions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MWrapperFunctions.sol new file mode 100644 index 000000000..e04d4a429 --- /dev/null +++ b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MWrapperFunctions.sol @@ -0,0 +1,40 @@ +/* + + Copyright 2018 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.24; +pragma experimental ABIEncoderV2; + +import "../libs/LibOrder.sol"; +import "../libs/LibFillResults.sol"; +import "../interfaces/IWrapperFunctions.sol"; + + +contract MWrapperFunctions { + + /// @dev Fills the input order. Reverts if exact takerAssetFillAmount not filled. + /// @param order LibOrder.Order struct containing order specifications. + /// @param takerAssetFillAmount Desired amount of takerAsset to sell. + /// @param signature Proof that order has been created by maker. + function fillOrKillOrderInternal( + LibOrder.Order memory order, + uint256 takerAssetFillAmount, + bytes memory signature + ) + internal + returns (LibFillResults.FillResults memory fillResults); +} diff --git a/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol b/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol index 70fc4ca6b..5d6f6970d 100644 --- a/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol +++ b/packages/contracts/src/2.0.0/utils/ReentrancyGuard/ReentrancyGuard.sol @@ -40,5 +40,4 @@ contract ReentrancyGuard { // Unlock mutex after function call locked = false; } - } |