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dydx flash loan almost done

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This commit is contained in:
Samyak Jain 2020-09-15 02:34:51 +10:00
parent 231e775389
commit 70f097571c
2 changed files with 24 additions and 14 deletions
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6
contracts/connectors/dydxFlash.sol
View File

@ -51,12 +51,6 @@ contract BasicResolver is Stores {
DydxFlashInterface(getDydxLoanAddr()).initiateFlashLoan(_token, tokenAmt, data);
if (token == getEthAddr()) {
payable(getDydxLoanAddr()).transfer(tokenAmt);
} else {
IERC20(token).transfer(getDydxLoanAddr(), tokenAmt);
}
AccountInterface(address(this)).disable(getDydxLoanAddr());
}

32
contracts/flashloan/dydx.sol
View File

@ -13,8 +13,13 @@ interface DSAInterface {
contract DydxFlashloaner is ICallee, DydxFlashloanBase {
address public constant soloAddr = 0x1E0447b19BB6EcFdAe1e4AE1694b0C3659614e4e;
address public constant wethAddr = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
address public constant ethAddr = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
struct CastData {
address dsa;
address token;
uint amount;
address[] targets;
bytes[] data;
}
@ -27,17 +32,28 @@ contract DydxFlashloaner is ICallee, DydxFlashloanBase {
) public {
CastData memory cd = abi.decode(data, (CastData));
// check9898 - change to DSA address & origin address too
DSAInterface(address(0)).cast(cd.targets, cd.data, address(0));
IERC20 tokenContract;
if (cd.token == ethAddr) {
tokenContract = IERC20(wethAddr);
tokenContract.approve(getAddressWETH(), cd.amount);
tokenContract.withdraw(cd.amount);
payable(cd.dsa).transfer(cd.amount);
} else {
tokenContract = IERC20(cd.token);
tokenContract.transfer(cd.dsa, cd.amount);
}
DSAInterface(cd.dsa).cast(cd.targets, cd.data, 0xB7fA44c2E964B6EB24893f7082Ecc08c8d0c0F87);
if (cd.token == ethAddr) {
tokenContract.deposit.value(cd.amount)();
}
}
// check9898 - if ETH then change 0xeeeee into WETH address and change the token into ETH before sending
function initiateFlashLoan(address _token, uint256 _amount, bytes calldata data)
external
{
function initiateFlashLoan(address _token, uint256 _amount, bytes calldata data) external {
ISoloMargin solo = ISoloMargin(soloAddr);
// Get marketId from token address
uint256 marketId = _getMarketIdFromTokenAddress(soloAddr, _token);
IERC20(_token).approve(soloAddr, _amount + 2);
@ -46,7 +62,7 @@ contract DydxFlashloaner is ICallee, DydxFlashloanBase {
operations[0] = _getWithdrawAction(marketId, _amount);
operations[1] = _getCallAction(data);
operations[2] = _getDepositAction(marketId, repayAmount);
operations[2] = _getDepositAction(marketId, _amount + 2);
Account.Info[] memory accountInfos = new Account.Info[](1);
accountInfos[0] = _getAccountInfo();