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Latest 6 from a total of 6 transactions
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Send To Aptos | 19683451 | 93 days ago | IN | 0.00042539 ETH | 0.00470191 | ||||
Send To Aptos | 19680559 | 94 days ago | IN | 0.00042539 ETH | 0.00350439 | ||||
Approve Max | 19675321 | 94 days ago | IN | 0 ETH | 0.00212937 | ||||
Approve Max | 19675320 | 94 days ago | IN | 0 ETH | 0.00220312 | ||||
Approve Max | 19675319 | 94 days ago | IN | 0 ETH | 0.0023581 | ||||
Initialize | 19675318 | 94 days ago | IN | 0 ETH | 0.00207431 |
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Contract Source Code Verified (Exact Match)
Contract Name:
SwapBridge
Compiler Version
v0.8.25+commit.b61c2a91
Optimization Enabled:
Yes with 200 runs
Other Settings:
paris EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.21; import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol"; import {Address} from "@openzeppelin/contracts/utils/Address.sol"; import {ITokenBridge} from "LayerZero-Aptos-Contract/apps/bridge-evm/contracts/interfaces/ITokenBridge.sol"; import {LzLib} from "@layerzerolabs/solidity-examples/contracts/libraries/LzLib.sol"; contract SwapBridge is Ownable { uint256 constant APT_AIRDROP_AMOUNT = 9904; bool isInit; ITokenBridge tokenBridge; constructor(address _owner) Ownable(_owner) {} function initialize(address _tokenBridgeAddress) public onlyOwner { require(!isInit, "Already init"); isInit = true; tokenBridge = ITokenBridge(_tokenBridgeAddress); } function approveMax(IERC20 _token, address _spender) public { SafeERC20.forceApprove(_token, _spender, type(uint256).max); } function quoteForSend() public view returns (uint256 nativeFee, uint256 zroFee) { (LzLib.CallParams memory callParams, bytes memory adapterParams) = _lzParams(hex"01"); (nativeFee, zroFee) = tokenBridge.quoteForSend(callParams, adapterParams); } function swapAndSendToAptos( IERC20 _fromToken, uint256 _fromAmount, IERC20 _toToken, uint256 _toAmount, bytes32 _aptosAddress, address _swapTarget, bytes calldata _swapBytes ) public payable { uint256 fromTokenOrgBalance = _fromToken.balanceOf(address(this)); uint256 toTokenOrgBalance = _toToken.balanceOf(address(this)); SafeERC20.safeTransferFrom(_fromToken, msg.sender, address(this), _fromAmount); Address.functionCall(_swapTarget, _swapBytes); uint256 actualToAmount = _toToken.balanceOf(address(this)) - toTokenOrgBalance; require(actualToAmount >= _toAmount, "toAmount"); uint256 residue = _fromToken.balanceOf(address(this)) - fromTokenOrgBalance; if (residue > 0) { SafeERC20.safeTransfer(_fromToken, msg.sender, residue); } _sendToAptos(address(_toToken), actualToAmount, _aptosAddress); if (_toToken.balanceOf(address(this)) > toTokenOrgBalance) { SafeERC20.safeTransfer(_toToken, msg.sender, _toToken.balanceOf(address(this)) - toTokenOrgBalance); } } function sendToAptos(IERC20 _token, uint256 _amount, bytes32 _aptosAddress) public payable { uint256 tokenOrgBalance = _token.balanceOf(address(this)); SafeERC20.safeTransferFrom(_token, msg.sender, address(this), _amount); _sendToAptos(address(_token), _amount, _aptosAddress); if (_token.balanceOf(address(this)) > tokenOrgBalance) { SafeERC20.safeTransfer(_token, msg.sender, _token.balanceOf(address(this)) - tokenOrgBalance); } } function _sendToAptos(address _tokenAddress, uint256 _amount, bytes32 _aptosAddress) private { (LzLib.CallParams memory callParams, bytes memory adapterParams) = _lzParams(_aptosAddress); tokenBridge.sendToAptos{value: msg.value}(_tokenAddress, _aptosAddress, _amount, callParams, adapterParams); } function rescueToken(IERC20 _token, address _recipient) external onlyOwner { uint256 tokenBalance = _token.balanceOf(address(this)); require(tokenBalance > 0, "Nothing to rescue"); SafeERC20.safeTransfer(_token, _recipient, tokenBalance); } function _lzParams(bytes32 _aptosAddress) private view returns (LzLib.CallParams memory callParams, bytes memory adapterParams) { callParams = LzLib.CallParams({refundAddress: payable(msg.sender), zroPaymentAddress: address(0x0)}); adapterParams = LzLib.buildAirdropAdapterParams( 10000, // uaGas LzLib.AirdropParams({airdropAmount: APT_AIRDROP_AMOUNT, airdropAddress: _aptosAddress}) ); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.20; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the value of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the value of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves a `value` amount of tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 value) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets a `value` amount of tokens as the allowance of `spender` over the * caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 value) external returns (bool); /** * @dev Moves a `value` amount of tokens from `from` to `to` using the * allowance mechanism. `value` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address from, address to, uint256 value) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.20; import {IERC20} from "../IERC20.sol"; import {IERC20Permit} from "../extensions/IERC20Permit.sol"; import {Address} from "../../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; /** * @dev An operation with an ERC20 token failed. */ error SafeERC20FailedOperation(address token); /** * @dev Indicates a failed `decreaseAllowance` request. */ error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease); /** * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value))); } /** * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful. */ function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value))); } /** * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 oldAllowance = token.allowance(address(this), spender); forceApprove(token, spender, oldAllowance + value); } /** * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no * value, non-reverting calls are assumed to be successful. */ function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal { unchecked { uint256 currentAllowance = token.allowance(address(this), spender); if (currentAllowance < requestedDecrease) { revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease); } forceApprove(token, spender, currentAllowance - requestedDecrease); } } /** * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval * to be set to zero before setting it to a non-zero value, such as USDT. */ function forceApprove(IERC20 token, address spender, uint256 value) internal { bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value)); if (!_callOptionalReturnBool(token, approvalCall)) { _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0))); _callOptionalReturn(token, approvalCall); } } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data); if (returndata.length != 0 && !abi.decode(returndata, (bool))) { revert SafeERC20FailedOperation(address(token)); } } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). * * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead. */ function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false // and not revert is the subcall reverts. (bool success, bytes memory returndata) = address(token).call(data); return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && address(token).code.length > 0; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol) pragma solidity ^0.8.20; import {Context} from "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * The initial owner is set to the address provided by the deployer. This can * later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; /** * @dev The caller account is not authorized to perform an operation. */ error OwnableUnauthorizedAccount(address account); /** * @dev The owner is not a valid owner account. (eg. `address(0)`) */ error OwnableInvalidOwner(address owner); event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the address provided by the deployer as the initial owner. */ constructor(address initialOwner) { if (initialOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _transferOwnership(initialOwner); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { if (owner() != _msgSender()) { revert OwnableUnauthorizedAccount(_msgSender()); } } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { if (newOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol) pragma solidity ^0.8.20; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev The ETH balance of the account is not enough to perform the operation. */ error AddressInsufficientBalance(address account); /** * @dev There's no code at `target` (it is not a contract). */ error AddressEmptyCode(address target); /** * @dev A call to an address target failed. The target may have reverted. */ error FailedInnerCall(); /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { if (address(this).balance < amount) { revert AddressInsufficientBalance(address(this)); } (bool success, ) = recipient.call{value: amount}(""); if (!success) { revert FailedInnerCall(); } } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason or custom error, it is bubbled * up by this function (like regular Solidity function calls). However, if * the call reverted with no returned reason, this function reverts with a * {FailedInnerCall} error. * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { if (address(this).balance < value) { revert AddressInsufficientBalance(address(this)); } (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an * unsuccessful call. */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata ) internal view returns (bytes memory) { if (!success) { _revert(returndata); } else { // only check if target is a contract if the call was successful and the return data is empty // otherwise we already know that it was a contract if (returndata.length == 0 && target.code.length == 0) { revert AddressEmptyCode(target); } return returndata; } } /** * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the * revert reason or with a default {FailedInnerCall} error. */ function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) { if (!success) { _revert(returndata); } else { return returndata; } } /** * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}. */ function _revert(bytes memory returndata) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert FailedInnerCall(); } } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.6.0; pragma experimental ABIEncoderV2; import "@layerzerolabs/solidity-examples/contracts/libraries/LzLib.sol"; interface ITokenBridge { enum PacketType { SEND_TO_APTOS, RECEIVE_FROM_APTOS } function sendToAptos( address _token, bytes32 _toAddress, uint _amountLD, LzLib.CallParams calldata _callParams, bytes calldata _adapterParams ) external payable; function sendETHToAptos( bytes32 _toAddress, uint _amountLD, LzLib.CallParams calldata _callParams, bytes calldata _adapterParams ) external payable; function quoteForSend(LzLib.CallParams calldata _callParams, bytes calldata _adapterParams) external view returns (uint nativeFee, uint zroFee); event Send(address indexed token, address indexed from, bytes32 indexed to, uint amountLD); event Receive(address indexed token, address indexed to, uint amountLD); event RegisterToken(address token); event SetBridgeBP(uint bridgeFeeBP); event SetWETH(address weth); event SetGlobalPause(bool paused); event SetTokenPause(address token, bool paused); event SetLocalChainId(uint16 localChainId); event SetAptosChainId(uint16 aptosChainId); event SetUseCustomAdapterParams(bool useCustomAdapterParams); event WithdrawFee(address indexed token, address to, uint amountLD); event WithdrawTVL(address indexed token, address to, uint amountLD); event EnableEmergencyWithdraw(bool enabled, uint unlockTime); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.6.0; pragma experimental ABIEncoderV2; library LzLib { // LayerZero communication struct CallParams { address payable refundAddress; address zroPaymentAddress; } //--------------------------------------------------------------------------- // Address type handling struct AirdropParams { uint airdropAmount; bytes32 airdropAddress; } function buildAdapterParams(LzLib.AirdropParams memory _airdropParams, uint _uaGasLimit) internal pure returns (bytes memory adapterParams) { if (_airdropParams.airdropAmount == 0 && _airdropParams.airdropAddress == bytes32(0x0)) { adapterParams = buildDefaultAdapterParams(_uaGasLimit); } else { adapterParams = buildAirdropAdapterParams(_uaGasLimit, _airdropParams); } } // Build Adapter Params function buildDefaultAdapterParams(uint _uaGas) internal pure returns (bytes memory) { // txType 1 // bytes [2 32 ] // fields [txType extraGas] return abi.encodePacked(uint16(1), _uaGas); } function buildAirdropAdapterParams(uint _uaGas, AirdropParams memory _params) internal pure returns (bytes memory) { require(_params.airdropAmount > 0, "Airdrop amount must be greater than 0"); require(_params.airdropAddress != bytes32(0x0), "Airdrop address must be set"); // txType 2 // bytes [2 32 32 bytes[] ] // fields [txType extraGas dstNativeAmt dstNativeAddress] return abi.encodePacked(uint16(2), _uaGas, _params.airdropAmount, _params.airdropAddress); } function getGasLimit(bytes memory _adapterParams) internal pure returns (uint gasLimit) { require(_adapterParams.length == 34 || _adapterParams.length > 66, "Invalid adapterParams"); assembly { gasLimit := mload(add(_adapterParams, 34)) } } // Decode Adapter Params function decodeAdapterParams(bytes memory _adapterParams) internal pure returns ( uint16 txType, uint uaGas, uint airdropAmount, address payable airdropAddress ) { require(_adapterParams.length == 34 || _adapterParams.length > 66, "Invalid adapterParams"); assembly { txType := mload(add(_adapterParams, 2)) uaGas := mload(add(_adapterParams, 34)) } require(txType == 1 || txType == 2, "Unsupported txType"); require(uaGas > 0, "Gas too low"); if (txType == 2) { assembly { airdropAmount := mload(add(_adapterParams, 66)) airdropAddress := mload(add(_adapterParams, 86)) } } } //--------------------------------------------------------------------------- // Address type handling function bytes32ToAddress(bytes32 _bytes32Address) internal pure returns (address _address) { return address(uint160(uint(_bytes32Address))); } function addressToBytes32(address _address) internal pure returns (bytes32 _bytes32Address) { return bytes32(uint(uint160(_address))); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol) pragma solidity ^0.8.20; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. * * ==== Security Considerations * * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be * considered as an intention to spend the allowance in any specific way. The second is that because permits have * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be * generally recommended is: * * ```solidity * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public { * try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {} * doThing(..., value); * } * * function doThing(..., uint256 value) public { * token.safeTransferFrom(msg.sender, address(this), value); * ... * } * ``` * * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also * {SafeERC20-safeTransferFrom}). * * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so * contracts should have entry points that don't rely on permit. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. * * CAUTION: See Security Considerations above. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol) pragma solidity ^0.8.20; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } function _contextSuffixLength() internal view virtual returns (uint256) { return 0; } }
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Contract Security Audit
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[{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"target","type":"address"}],"name":"AddressEmptyCode","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"AddressInsufficientBalance","type":"error"},{"inputs":[],"name":"FailedInnerCall","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"OwnableInvalidOwner","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"OwnableUnauthorizedAccount","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperation","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[{"internalType":"contract IERC20","name":"_token","type":"address"},{"internalType":"address","name":"_spender","type":"address"}],"name":"approveMax","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_tokenBridgeAddress","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"quoteForSend","outputs":[{"internalType":"uint256","name":"nativeFee","type":"uint256"},{"internalType":"uint256","name":"zroFee","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"_token","type":"address"},{"internalType":"address","name":"_recipient","type":"address"}],"name":"rescueToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"_token","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"bytes32","name":"_aptosAddress","type":"bytes32"}],"name":"sendToAptos","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"_fromToken","type":"address"},{"internalType":"uint256","name":"_fromAmount","type":"uint256"},{"internalType":"contract IERC20","name":"_toToken","type":"address"},{"internalType":"uint256","name":"_toAmount","type":"uint256"},{"internalType":"bytes32","name":"_aptosAddress","type":"bytes32"},{"internalType":"address","name":"_swapTarget","type":"address"},{"internalType":"bytes","name":"_swapBytes","type":"bytes"}],"name":"swapAndSendToAptos","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Deployed Bytecode
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000e0d2d6956c1d9fa49c29a69f2e49f5f176aa27fd
-----Decoded View---------------
Arg [0] : _owner (address): 0xe0D2d6956c1D9fa49c29A69F2E49f5f176aa27fd
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000e0d2d6956c1d9fa49c29a69f2e49f5f176aa27fd
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.