Discover more of Etherscan's tools and services in one place.
Sponsored
Contract Source Code:
File 1 of 2 : Deposit.sol
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "IERC20Lite.sol"; /** * @title Deposit contract * @notice Creates a contract with a known address and withdraws tokens from it. * After deployment, the Vault will call fetch() to withdraw tokens. * @dev Any change in this contract, including comments, will affect the final * bytecode and therefore will affect the create2 derived addresses. * Do NOT modify unless the consequences of doing so are fully understood. */ contract Deposit { address payable private immutable vault; /** * @notice Upon deployment it fetches the tokens (native or ERC20) to the Vault. * @param token The address of the token to fetch */ constructor(address token) { vault = payable(msg.sender); // Slightly cheaper to use msg.sender instead of Vault. if (token == 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) { // solhint-disable-next-line avoid-low-level-calls (bool success, ) = msg.sender.call{value: address(this).balance}(""); require(success); } else { // IERC20Lite.transfer doesn't have a return bool to avoid reverts on non-standard ERC20s IERC20Lite(token).transfer(msg.sender, IERC20Lite(token).balanceOf(address(this))); } } /** * @notice Allows the Vault to fetch ERC20 tokens from this contract. * @param token The address of the token to fetch */ function fetch(address token) external { require(msg.sender == vault); // IERC20Lite.transfer doesn't have a return bool to avoid reverts on non-standard ERC20s IERC20Lite(token).transfer(msg.sender, IERC20Lite(token).balanceOf(address(this))); } /// @notice Receives native tokens, emits an event and sends them to the Vault. Note that this // requires the sender to forward some more gas than for a simple transfer. receive() external payable { // solhint-disable-next-line avoid-low-level-calls (bool success, ) = vault.call{value: address(this).balance}(""); require(success); } }
File 2 of 2 : IERC20Lite.sol
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @title ERC20 Lite Interface * @notice The interface for functions ERC20Lite implements. This is intended to * be used only in the Deposit contract. * @dev Any change in this contract, including comments, will affect the final * bytecode and therefore will affect the create2 derived addresses. * Do NOT modify unless the consequences of doing so are fully understood. */ interface IERC20Lite { /// @dev Removed the return bool to avoid reverts on non-standard ERC20s. function transfer(address, uint256) external; function balanceOf(address) external view returns (uint256); }
This website uses cookies to improve your experience. By continuing to use this website, you agree to its Terms and Privacy Policy.