Liquidity.Party/tycho-execution
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Merge pull request #88 from propeller-heads/router/hr/ENG-4279-check-leftover

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refactor: check if amountIn was fully consumed based on balance changes
This commit is contained in:
Harsh Vardhan Roy
2025-02-26 23:29:24 +05:30
committed by GitHub
parent 09354b501a 5e175e295f
commit 4e5776133b
1 changed files with 15 additions and 11 deletions
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26
foundry/src/TychoRouter.sol
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@@ -150,8 +150,23 @@ contract TychoRouter is AccessControl, Dispatcher, Pausable, ReentrancyGuard {
tokenIn = address(_weth);
}
uint256 initialBalance = tokenIn == address(0)
? address(this).balance
: IERC20(tokenIn).balanceOf(address(this));
amountOut = _swap(amountIn, nTokens, swaps);
uint256 currentBalance = tokenIn == address(0)
? address(this).balance
: IERC20(tokenIn).balanceOf(address(this));
uint256 amountConsumed = initialBalance - currentBalance;
if (amountConsumed < amountIn) {
uint256 leftoverAmount = amountIn - amountConsumed;
revert TychoRouter__AmountInNotFullySpent(leftoverAmount);
}
if (fee > 0) {
uint256 feeAmount = (amountOut * fee) / 10000;
amountOut -= feeAmount;
@@ -162,17 +177,6 @@ contract TychoRouter is AccessControl, Dispatcher, Pausable, ReentrancyGuard {
revert TychoRouter__NegativeSlippage(amountOut, minAmountOut);
}
uint256 leftoverAmountIn;
if (tokenIn == address(0)) {
leftoverAmountIn = address(this).balance;
} else {
leftoverAmountIn = IERC20(tokenIn).balanceOf(address(this));
}
if (leftoverAmountIn > 0) {
revert TychoRouter__AmountInNotFullySpent(leftoverAmountIn);
}
if (unwrapEth) {
_unwrapETH(amountOut);
}