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0x6440d634465aec26513a328d4a88868c76c7ccc044103adfde63c241790410d2 | Wrap And Relay T... | (pending) | 3 mins ago | IN | 0.002 ETH | (Pending) | |||
Wrap And Relay T... | 20180836 | 44 hrs ago | IN | 0.001 ETH | 0.00165118 | ||||
Wrap And Relay T... | 20180779 | 44 hrs ago | IN | 0.102 ETH | 0.00151634 | ||||
Register | 20180756 | 44 hrs ago | IN | 0 ETH | 0.0001552 | ||||
Wrap And Relay T... | 20151490 | 5 days ago | IN | 0.00876897 ETH | 0.0011864 | ||||
Wrap And Relay T... | 20151360 | 5 days ago | IN | 0.0040014 ETH | 0.00125882 | ||||
Register | 20151285 | 5 days ago | IN | 0 ETH | 0.00011637 | ||||
Wrap And Relay T... | 20133667 | 8 days ago | IN | 0.1 ETH | 0.00367625 | ||||
Wrap And Relay T... | 20120056 | 10 days ago | IN | 0.13 ETH | 0.00273697 | ||||
Wrap And Relay T... | 20106891 | 12 days ago | IN | 1.58379634 ETH | 0.00161063 | ||||
Wrap And Relay T... | 20105330 | 12 days ago | IN | 0.0028 ETH | 0.00137633 | ||||
Wrap And Relay T... | 20098874 | 13 days ago | IN | 2 ETH | 0.00177759 | ||||
Register | 20098856 | 13 days ago | IN | 0 ETH | 0.00020719 | ||||
Register | 20090671 | 14 days ago | IN | 0 ETH | 0.0006605 | ||||
Wrap And Relay T... | 20090326 | 14 days ago | IN | 3.28 ETH | 0.00281392 | ||||
Register | 20090188 | 14 days ago | IN | 0 ETH | 0.00025255 | ||||
Register | 20090171 | 14 days ago | IN | 0 ETH | 0.00025181 | ||||
Wrap And Relay T... | 20086889 | 14 days ago | IN | 1.07522415 ETH | 0.00254289 | ||||
Register | 20086875 | 14 days ago | IN | 0 ETH | 0.00027169 | ||||
Register | 20078645 | 16 days ago | IN | 0 ETH | 0.00032811 | ||||
Wrap And Relay T... | 20078614 | 16 days ago | IN | 0.1 ETH | 0.00380758 | ||||
Wrap And Relay T... | 20076624 | 16 days ago | IN | 0.14 ETH | 0.00654747 | ||||
Wrap And Relay T... | 20052491 | 19 days ago | IN | 0.20322803 ETH | 0.00188173 | ||||
Wrap And Relay T... | 20051020 | 19 days ago | IN | 0.1 ETH | 0.00187727 | ||||
Register | 20044133 | 20 days ago | IN | 0 ETH | 0.0002423 |
Latest 25 internal transactions (View All)
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20180836 | 44 hrs ago | 0.001 ETH | ||||
20180779 | 44 hrs ago | 0.102 ETH | ||||
20151490 | 5 days ago | 0.00876897 ETH | ||||
20151360 | 5 days ago | 0.0040014 ETH | ||||
20133667 | 8 days ago | 0.1 ETH | ||||
20120056 | 10 days ago | 0.13 ETH | ||||
20106891 | 12 days ago | 1.58379634 ETH | ||||
20105330 | 12 days ago | 0.0028 ETH | ||||
20098874 | 13 days ago | 2 ETH | ||||
20090326 | 14 days ago | 3.28 ETH | ||||
20086889 | 14 days ago | 1.07522415 ETH | ||||
20078614 | 16 days ago | 0.1 ETH | ||||
20076624 | 16 days ago | 0.14 ETH | ||||
20052491 | 19 days ago | 0.20322803 ETH | ||||
20051020 | 19 days ago | 0.1 ETH | ||||
20036743 | 21 days ago | 0.02098881 ETH | ||||
19984716 | 29 days ago | 0.35438319 ETH | ||||
19970450 | 31 days ago | 0.68628428 ETH | ||||
19949506 | 34 days ago | 0.095 ETH | ||||
19939019 | 35 days ago | 0.3 ETH | ||||
19935773 | 36 days ago | 0.5138174 ETH | ||||
19927993 | 37 days ago | 0.60990729 ETH | ||||
19907456 | 40 days ago | 0.48 ETH | ||||
19886376 | 42 days ago | 0.1 ETH | ||||
19883462 | 43 days ago | 0.005 ETH |
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Contract Name:
L1Helper
Compiler Version
v0.7.5+commit.eb77ed08
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT // https://tornado.cash /* * d888888P dP a88888b. dP * 88 88 d8' `88 88 * 88 .d8888b. 88d888b. 88d888b. .d8888b. .d888b88 .d8888b. 88 .d8888b. .d8888b. 88d888b. * 88 88' `88 88' `88 88' `88 88' `88 88' `88 88' `88 88 88' `88 Y8ooooo. 88' `88 * 88 88. .88 88 88 88 88. .88 88. .88 88. .88 dP Y8. .88 88. .88 88 88 88 * dP `88888P' dP dP dP `88888P8 `88888P8 `88888P' 88 Y88888P' `88888P8 `88888P' dP dP * ooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo */ pragma solidity ^0.7.0; pragma abicoder v2; import "omnibridge/contracts/helpers/WETHOmnibridgeRouter.sol"; /// @dev Extension for original WETHOmnibridgeRouter that stores TornadoPool account registrations. contract L1Helper is WETHOmnibridgeRouter { event PublicKey(address indexed owner, bytes key); struct Account { address owner; bytes publicKey; } constructor( IOmnibridge _bridge, IWETH _weth, address _owner ) WETHOmnibridgeRouter(_bridge, _weth, _owner) {} /** @dev Registers provided public key and its owner in pool * @param _account pair of address and key */ function register(Account memory _account) public { require(_account.owner == msg.sender, "only owner can be registered"); _register(_account); } /** * @dev Wraps native assets and relays wrapped ERC20 tokens to the other chain. * It also calls receiver on other side with the _data provided. * @param _receiver bridged assets receiver on the other side of the bridge. * @param _data data for the call of receiver on other side. * @param _account tornadoPool account data */ function wrapAndRelayTokens( address _receiver, bytes memory _data, Account memory _account ) public payable { WETH.deposit{ value: msg.value }(); bridge.relayTokensAndCall(address(WETH), _receiver, msg.value, _data); if (_account.owner == msg.sender) { _register(_account); } } function _register(Account memory _account) internal { emit PublicKey(_account.owner, _account.publicKey); } }
pragma solidity 0.7.5; import "../interfaces/IOmnibridge.sol"; import "../interfaces/IWETH.sol"; import "../libraries/AddressHelper.sol"; import "../libraries/Bytes.sol"; import "../upgradeable_contracts/modules/OwnableModule.sol"; import "../upgradeable_contracts/Claimable.sol"; /** * @title WETHOmnibridgeRouter * @dev Omnibridge extension for processing native and wrapped native assets. * Intended to work with WETH/WBNB/WXDAI tokens, see: * https://etherscan.io/address/0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2 * https://bscscan.com/address/0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c * https://blockscout.com/poa/xdai/address/0xe91D153E0b41518A2Ce8Dd3D7944Fa863463a97d */ contract WETHOmnibridgeRouter is OwnableModule, Claimable { IOmnibridge public immutable bridge; IWETH public immutable WETH; /** * @dev Initializes this contract. * @param _bridge address of the HomeOmnibridge/ForeignOmnibridge contract. * @param _weth address of the WETH token used for wrapping/unwrapping native coins (e.g. WETH/WBNB/WXDAI). * @param _owner address of the contract owner. */ constructor( IOmnibridge _bridge, IWETH _weth, address _owner ) OwnableModule(_owner) { bridge = _bridge; WETH = _weth; _weth.approve(address(_bridge), uint256(-1)); } /** * @dev Wraps native assets and relays wrapped ERC20 tokens to the other chain. * Call msg.sender will receive assets on the other side of the bridge. */ function wrapAndRelayTokens() external payable { wrapAndRelayTokens(msg.sender); } /** * @dev Wraps native assets and relays wrapped ERC20 tokens to the other chain. * @param _receiver bridged assets receiver on the other side of the bridge. */ function wrapAndRelayTokens(address _receiver) public payable { WETH.deposit{ value: msg.value }(); bridge.relayTokens(address(WETH), _receiver, msg.value); } /** * @dev Wraps native assets and relays wrapped ERC20 tokens to the other chain. * It also calls receiver on other side with the _data provided. * @param _receiver bridged assets receiver on the other side of the bridge. * @param _data data for the call of receiver on other side. */ function wrapAndRelayTokens(address _receiver, bytes memory _data) public payable { WETH.deposit{ value: msg.value }(); bridge.relayTokensAndCall(address(WETH), _receiver, msg.value, _data); } /** * @dev Bridged callback function used for unwrapping received tokens. * Can only be called by the associated Omnibridge contract. * @param _token bridged token contract address, should be WETH. * @param _value amount of bridged/received tokens. * @param _data extra data passed alongside with relayTokensAndCall on the other side of the bridge. * Should contain coins receiver address. */ function onTokenBridged( address _token, uint256 _value, bytes memory _data ) external { require(_token == address(WETH)); require(msg.sender == address(bridge)); require(_data.length == 20); WETH.withdraw(_value); AddressHelper.safeSendValue(payable(Bytes.bytesToAddress(_data)), _value); } /** * @dev Claims stuck coins/tokens. * Only contract owner can call this method. * @param _token address of claimed token contract, address(0) for native coins. * @param _to address of tokens receiver */ function claimTokens(address _token, address _to) external onlyOwner { claimValues(_token, _to); } /** * @dev Ether receive function. * Should be only called from the WETH contract when withdrawing native coins. Will revert otherwise. */ receive() external payable { require(msg.sender == address(WETH)); } }
pragma solidity 0.7.5; interface IOmnibridge { function relayTokens( address _token, address _receiver, uint256 _value ) external; function relayTokensAndCall( address token, address _receiver, uint256 _value, bytes memory _data ) external; }
pragma solidity 0.7.5; interface IWETH { function deposit() external payable; function withdraw(uint256 _value) external; function approve(address _to, uint256 _value) external; }
pragma solidity 0.7.5; import "../upgradeable_contracts/Sacrifice.sol"; /** * @title AddressHelper * @dev Helper methods for Address type. */ library AddressHelper { /** * @dev Try to send native tokens to the address. If it fails, it will force the transfer by creating a selfdestruct contract * @param _receiver address that will receive the native tokens * @param _value the amount of native tokens to send */ function safeSendValue(address payable _receiver, uint256 _value) internal { if (!(_receiver).send(_value)) { new Sacrifice{ value: _value }(_receiver); } } }
pragma solidity 0.7.5; /** * @title Bytes * @dev Helper methods to transform bytes to other solidity types. */ library Bytes { /** * @dev Truncate bytes array if its size is more than 20 bytes. * NOTE: This function does not perform any checks on the received parameter. * Make sure that the _bytes argument has a correct length, not less than 20 bytes. * A case when _bytes has length less than 20 will lead to the undefined behaviour, * since assembly will read data from memory that is not related to the _bytes argument. * @param _bytes to be converted to address type * @return addr address included in the firsts 20 bytes of the bytes array in parameter. */ function bytesToAddress(bytes memory _bytes) internal pure returns (address addr) { assembly { addr := mload(add(_bytes, 20)) } } }
pragma solidity 0.7.5; import "@openzeppelin/contracts/utils/Address.sol"; /** * @title OwnableModule * @dev Common functionality for multi-token extension non-upgradeable module. */ contract OwnableModule { address public owner; /** * @dev Initializes this contract. * @param _owner address of the owner that is allowed to perform additional actions on the particular module. */ constructor(address _owner) { owner = _owner; } /** * @dev Throws if sender is not the owner of this contract. */ modifier onlyOwner { require(msg.sender == owner); _; } /** * @dev Changes the owner of this contract. * @param _newOwner address of the new owner. */ function transferOwnership(address _newOwner) external onlyOwner { owner = _newOwner; } }
pragma solidity 0.7.5; import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol"; import "../libraries/AddressHelper.sol"; /** * @title Claimable * @dev Implementation of the claiming utils that can be useful for withdrawing accidentally sent tokens that are not used in bridge operations. */ contract Claimable { using SafeERC20 for IERC20; /** * Throws if a given address is equal to address(0) */ modifier validAddress(address _to) { require(_to != address(0)); _; } /** * @dev Withdraws the erc20 tokens or native coins from this contract. * Caller should additionally check that the claimed token is not a part of bridge operations (i.e. that token != erc20token()). * @param _token address of the claimed token or address(0) for native coins. * @param _to address of the tokens/coins receiver. */ function claimValues(address _token, address _to) internal validAddress(_to) { if (_token == address(0)) { claimNativeCoins(_to); } else { claimErc20Tokens(_token, _to); } } /** * @dev Internal function for withdrawing all native coins from the contract. * @param _to address of the coins receiver. */ function claimNativeCoins(address _to) internal { uint256 value = address(this).balance; AddressHelper.safeSendValue(payable(_to), value); } /** * @dev Internal function for withdrawing all tokens of some particular ERC20 contract from this contract. * @param _token address of the claimed ERC20 token. * @param _to address of the tokens receiver. */ function claimErc20Tokens(address _token, address _to) internal { IERC20 token = IERC20(_token); uint256 balance = token.balanceOf(address(this)); token.safeTransfer(_to, balance); } }
pragma solidity 0.7.5; contract Sacrifice { constructor(address payable _recipient) payable { selfdestruct(_recipient); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @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://diligence.consensys.net/posts/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/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @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, it is bubbled up by this * function (like regular Solidity function calls). * * 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. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @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`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // 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 // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import "./IERC20.sol"; import "../../math/SafeMath.sol"; import "../../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 SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @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, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) 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 `amount` 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 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @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); }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"contract IOmnibridge","name":"_bridge","type":"address"},{"internalType":"contract IWETH","name":"_weth","type":"address"},{"internalType":"address","name":"_owner","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":false,"internalType":"bytes","name":"key","type":"bytes"}],"name":"PublicKey","type":"event"},{"inputs":[],"name":"WETH","outputs":[{"internalType":"contract IWETH","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"bridge","outputs":[{"internalType":"contract IOmnibridge","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"address","name":"_to","type":"address"}],"name":"claimTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"onTokenBridged","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"bytes","name":"publicKey","type":"bytes"}],"internalType":"struct L1Helper.Account","name":"_account","type":"tuple"}],"name":"register","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"wrapAndRelayTokens","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_receiver","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"wrapAndRelayTokens","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_receiver","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"},{"components":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"bytes","name":"publicKey","type":"bytes"}],"internalType":"struct L1Helper.Account","name":"_account","type":"tuple"}],"name":"wrapAndRelayTokens","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_receiver","type":"address"}],"name":"wrapAndRelayTokens","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]
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)
00000000000000000000000088ad09518695c6c3712ac10a214be5109a655671000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc20000000000000000000000005efda50f22d34f262c29268506c5fa42cb56a1ce
-----Decoded View---------------
Arg [0] : _bridge (address): 0x88ad09518695c6c3712AC10a214bE5109a655671
Arg [1] : _weth (address): 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2
Arg [2] : _owner (address): 0x5efda50f22d34F262c29268506C5Fa42cB56A1Ce
-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 00000000000000000000000088ad09518695c6c3712ac10a214be5109a655671
Arg [1] : 000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2
Arg [2] : 0000000000000000000000005efda50f22d34f262c29268506c5fa42cb56a1ce
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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.