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feat: Support USDT by using safeTransfer in EthereumSpokePool #211

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Merged
merged 1 commit into from
Dec 20, 2022
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feat: Support USDT by using safeTransfer in EthereumSpokePool #211

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6 changes: 5 additions & 1 deletion contracts/Ethereum_SpokePool.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -3,11 +3,15 @@ pragma solidity ^0.8.0;

import "./SpokePool.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

/**
* @notice Ethereum L1 specific SpokePool. Used on Ethereum L1 to facilitate L2->L1 transfers.
*/
contract Ethereum_SpokePool is SpokePool, Ownable {
using SafeERC20 for IERC20;

/**
* @notice Construct the Ethereum SpokePool.
* @param _hubPool Hub pool address to set. Can be changed by admin.
Expand All @@ -25,7 +29,7 @@ contract Ethereum_SpokePool is SpokePool, Ownable {
**************************************/

function _bridgeTokensToHubPool(RelayerRefundLeaf memory relayerRefundLeaf) internal override {
IERC20(relayerRefundLeaf.l2TokenAddress).transfer(hubPool, relayerRefundLeaf.amountToReturn);
IERC20(relayerRefundLeaf.l2TokenAddress).safeTransfer(hubPool, relayerRefundLeaf.amountToReturn);
}

// Admin is simply owner which should be same account that owns the HubPool deployed on this network. A core
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