diff options
| -rw-r--r-- | packages/contracts/src/contracts/current/protocol/Exchange/MixinWrapperFunctions.sol | 44 |
1 files changed, 15 insertions, 29 deletions
diff --git a/packages/contracts/src/contracts/current/protocol/Exchange/MixinWrapperFunctions.sol b/packages/contracts/src/contracts/current/protocol/Exchange/MixinWrapperFunctions.sol index ed7c67709..96ebee45d 100644 --- a/packages/contracts/src/contracts/current/protocol/Exchange/MixinWrapperFunctions.sol +++ b/packages/contracts/src/contracts/current/protocol/Exchange/MixinWrapperFunctions.sol @@ -57,24 +57,10 @@ contract MixinWrapperFunctions is public returns (uint256 takerTokenFilledAmount) { - // bool success = address(this).delegatecall( - // this.fillOrder.selector, - // order, - // takerTokenFillAmount, - // signature - // ); - // if (success) { - // assembly { - // returndatacopy(0, 0, 32) - // return (0, 32) - // } - // } - // return 0; - // We need to call MExchangeCore.fillOrder using a delegatecall in // assembly so that we can intercept a call that throws. For this, we // need the input encoded in memory in the Ethereum ABIv2 format [1]. - // + // | Offset | Length | Contents | // |--------|---------|------------------------------| // | 0 | 4 | function selector | @@ -85,12 +71,12 @@ contract MixinWrapperFunctions is // | 452 | (1) | signature | // | (2) | (3) | padding (zero) | // | (4) | | end of input | - // + // (1): len(signature) // (2): 452 + len(signature) // (3): 32 - (len(signature) mod 32) // (4): 452 + len(signature) + 32 - (len(signature) mod 32) - // + // [1]: https://solidity.readthedocs.io/en/develop/abi-spec.html bytes4 fillOrderSelector = this.fillOrder.selector; @@ -103,17 +89,17 @@ contract MixinWrapperFunctions is mstore(start, fillOrderSelector) // Write order struct - mstore(add(start, 4), order) // makerAddress - mstore(add(start, 36), add(order, 32)) // takerAddress - mstore(add(start, 68), add(order, 64)) // makerTokenAddress - mstore(add(start, 100), add(order, 96)) // takerTokenAddress - mstore(add(start, 132), add(order, 128)) // feeRecipientAddress - mstore(add(start, 164), add(order, 160)) // makerTokenAmount - mstore(add(start, 196), add(order, 192)) // takerTokenAmount - mstore(add(start, 228), add(order, 224)) // makerFeeAmount - mstore(add(start, 260), add(order, 256)) // takerFeeAmount - mstore(add(start, 292), add(order, 288)) // expirationTimeSeconds - mstore(add(start, 324), add(order, 320)) // salt + mstore(add(start, 4), mload(order)) // makerAddress + mstore(add(start, 36), mload(add(order, 32))) // takerAddress + mstore(add(start, 68), mload(add(order, 64))) // makerTokenAddress + mstore(add(start, 100), mload(add(order, 96))) // takerTokenAddress + mstore(add(start, 132), mload(add(order, 128))) // feeRecipientAddress + mstore(add(start, 164), mload(add(order, 160))) // makerTokenAmount + mstore(add(start, 196), mload(add(order, 192))) // takerTokenAmount + mstore(add(start, 228), mload(add(order, 224))) // makerFeeAmount + mstore(add(start, 260), mload(add(order, 256))) // takerFeeAmount + mstore(add(start, 292), mload(add(order, 288))) // expirationTimeSeconds + mstore(add(start, 324), mload(add(order, 320))) // salt // Write takerTokenFillAmount mstore(add(start, 356), takerTokenFillAmount) @@ -134,7 +120,7 @@ contract MixinWrapperFunctions is for { let curr := 0 } lt(curr, sigLenWithPadding) { curr := add(curr, 32) } - { mstore(add(start, add(452, curr)), add(sigStart, curr)) } + { mstore(add(start, add(452, curr)), mload(add(sigStart, curr))) } // Execute delegatecall let success := delegatecall( |