diff options
Diffstat (limited to 'packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol')
| -rw-r--r-- | packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol | 75 |
1 files changed, 38 insertions, 37 deletions
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 31f7f2847..823e14316 100644 --- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol +++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol @@ -15,13 +15,14 @@ limitations under the License. */ -pragma solidity ^0.4.24; +pragma solidity 0.4.24; import "./libs/LibExchangeErrors.sol"; import "./mixins/MSignatureValidator.sol"; import "./mixins/MTransactions.sol"; import "./libs/LibEIP712.sol"; + contract MixinTransactions is LibEIP712, MSignatureValidator, @@ -36,7 +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,", @@ -44,41 +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. @@ -138,6 +104,41 @@ contract MixinTransactions is 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`). /// If calling a fill function, this address will represent the taker. /// If calling a cancel function, this address will represent the maker. |