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Added 1inch swap function sig check

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This commit is contained in:
Thrilok Kumar 2020-05-10 01:58:08 +05:30
parent aca6cad4d4
commit 05eacbce94
1 changed files with 24 additions and 2 deletions
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26
contracts/connectors/1inch.sol
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@ -64,6 +64,13 @@ contract OneHelpers is Stores, DSMath {
return 0xC586BeF4a0992C495Cf22e1aeEE4E446CECDee0E;
}
/**
* @dev Return 1Split swap function sig
*/
function getOneSplitSig() internal pure returns (bytes4) {
return 0xf88309d7;
}
function convert18ToDec(uint _dec, uint256 _amt) internal pure returns (uint256 amt) {
amt = (_amt / 10 ** (18 - _dec));
}
@ -84,6 +91,16 @@ contract OneHelpers is Stores, DSMath {
contract Resolver is OneHelpers {
function checkOneInchSig(bytes memory callData) internal pure returns(bool isOk) {
bytes memory _data = callData;
bytes4 sig;
// solium-disable-next-line security/no-inline-assembly
assembly {
sig := mload(add(_data, 32))
}
isOk = sig == getOneSplitSig();
}
function oneSplitSwap(
OneSplitInterface oneSplitContract,
TokenInterface _sellAddr,
@ -180,7 +197,7 @@ contract BasicResolver is Resolver {
uint unitAmt,
uint getId,
uint setId
) public payable {
) external payable {
uint _sellAmt = getUint(getId, sellAmt);
TokenInterface _buyAddr = TokenInterface(buyAddr);
@ -195,7 +212,7 @@ contract BasicResolver is Resolver {
_buyAddr,
_sellAmt,
3, // TODO - shall we hardcode?
0 // TODO - do we need to disable anything?
0
);
uint _buyAmt = oneSplitSwap(
@ -209,6 +226,7 @@ contract BasicResolver is Resolver {
);
setUint(setId, _buyAmt);
emit LogSell(address(_buyAddr), address(_sellAddr), _buyAmt, _sellAmt, getId, setId);
bytes32 _eventCode = keccak256("LogSell(address,address,uint256,uint256,uint256,uint256)");
bytes memory _eventParam = abi.encode(address(_buyAddr), address(_sellAddr), _buyAmt, _sellAmt, getId, setId);
@ -243,6 +261,7 @@ contract BasicResolver is Resolver {
);
setUint(setId, _buyAmt);
emit LogSellTwo(address(_buyAddr), address(_sellAddr), _buyAmt, _sellAmt, getId, setId);
bytes32 _eventCode = keccak256("LogSellTwo(address,address,uint256,uint256,uint256,uint256)");
bytes memory _eventParam = abi.encode(address(_buyAddr), address(_sellAddr), _buyAmt, _sellAmt, getId, setId);
@ -267,9 +286,12 @@ contract BasicResolver is Resolver {
TokenInterface(_sellAddr).approve(getOneInchAddress(), sellAmt);
}
require(checkOneInchSig(callData), "Not-swap-function");
uint buyAmt = oneInchSwap(_buyAddr, _sellAddr, callData, sellAmt, unitAmt, sellAmt);
setUint(setId, buyAmt);
emit LogSellThree(address(_buyAddr), address(_sellAddr), buyAmt, sellAmt, 0, setId);
bytes32 _eventCode = keccak256("LogSellThree(address,address,uint256,uint256,uint256,uint256)");
bytes memory _eventParam = abi.encode(address(_buyAddr), address(_sellAddr), buyAmt, sellAmt, 0, setId);