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Diffstat (limited to 'packages/contracts/contracts/extensions/Forwarder/MixinWeth.sol')
-rw-r--r-- | packages/contracts/contracts/extensions/Forwarder/MixinWeth.sol | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/packages/contracts/contracts/extensions/Forwarder/MixinWeth.sol b/packages/contracts/contracts/extensions/Forwarder/MixinWeth.sol deleted file mode 100644 index d2814a49b..000000000 --- a/packages/contracts/contracts/extensions/Forwarder/MixinWeth.sol +++ /dev/null @@ -1,113 +0,0 @@ -/* - - Copyright 2018 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.24; - -import "../../protocol/Exchange/libs/LibMath.sol"; -import "./libs/LibConstants.sol"; -import "./mixins/MWeth.sol"; - - -contract MixinWeth is - LibMath, - LibConstants, - MWeth -{ - /// @dev Default payabale function, this allows us to withdraw WETH - function () - public - payable - { - require( - msg.sender == address(ETHER_TOKEN), - "DEFAULT_FUNCTION_WETH_CONTRACT_ONLY" - ); - } - - /// @dev Converts message call's ETH value into WETH. - function convertEthToWeth() - internal - { - require( - msg.value > 0, - "INVALID_MSG_VALUE" - ); - ETHER_TOKEN.deposit.value(msg.value)(); - } - - /// @dev Transfers feePercentage of WETH spent on primary orders to feeRecipient. - /// Refunds any excess ETH to msg.sender. - /// @param wethSoldExcludingFeeOrders Amount of WETH sold when filling primary orders. - /// @param wethSoldForZrx Amount of WETH sold when purchasing ZRX required for primary order fees. - /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient. - /// @param feeRecipient Address that will receive ETH when orders are filled. - function transferEthFeeAndRefund( - uint256 wethSoldExcludingFeeOrders, - uint256 wethSoldForZrx, - uint256 feePercentage, - address feeRecipient - ) - internal - { - // Ensure feePercentage is less than 5%. - require( - feePercentage <= MAX_FEE_PERCENTAGE, - "FEE_PERCENTAGE_TOO_LARGE" - ); - - // Ensure that no extra WETH owned by this contract has been sold. - uint256 wethSold = safeAdd(wethSoldExcludingFeeOrders, wethSoldForZrx); - require( - wethSold <= msg.value, - "OVERSOLD_WETH" - ); - - // Calculate amount of WETH that hasn't been sold. - uint256 wethRemaining = safeSub(msg.value, wethSold); - - // Calculate ETH fee to pay to feeRecipient. - uint256 ethFee = getPartialAmountFloor( - feePercentage, - PERCENTAGE_DENOMINATOR, - wethSoldExcludingFeeOrders - ); - - // Ensure fee is less than amount of WETH remaining. - require( - ethFee <= wethRemaining, - "INSUFFICIENT_ETH_REMAINING" - ); - - // Do nothing if no WETH remaining - if (wethRemaining > 0) { - // Convert remaining WETH to ETH - ETHER_TOKEN.withdraw(wethRemaining); - - // Pay ETH to feeRecipient - if (ethFee > 0) { - feeRecipient.transfer(ethFee); - } - - // Refund remaining ETH to msg.sender. - uint256 ethRefund = safeSub(wethRemaining, ethFee); - if (ethRefund > 0) { - msg.sender.transfer(ethRefund); - } - } - } -} |