Address Contract Partially Verified
Address
0x99AF554d6D9bAF9d4056122e42f18Cf28951eEE4
Balance
0 ETH
Nonce
1
Code Size
8088 bytes
Creator
0xfc05C211...233C at tx 0x1a90ef8b...839d4f
Indexed Transactions
0
Contract Bytecode
8088 bytes
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Verified Source Code Partial Match
Compiler: v0.8.7+commit.e28d00a7
EVM: london
Optimization: No
Withdrawal.sol 132 lines
// SPDX-License-Identifier: MIT
pragma solidity =0.8.7;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/security/Pausable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
contract Withdrawal is Pausable, Ownable {
event WithdrawalEvent(uint256 indexed key, address signer, address to, address indexed token, uint256 amount);
event CancelEvent(uint256 indexed key, address signer, address to, address indexed token, uint256 amount);
event UpdateSigner(address signer, bool value);
event UpdatePauseOperator(address oldOperator, address newOperator);
enum OrderStatus {
None,
Processed,
Cancelled
}
/* An ECDSA signature. */
struct Sig {
uint8 v;
bytes32 r;
bytes32 s;
}
struct Order {
address signer;
address holder;
address to;
address token;
uint256 amount;
uint256 expiration;
uint256 key;
}
mapping(uint256 => OrderStatus) private _status;
mapping(uint256 => Order) public orders;
mapping(address => bool) public allowedSigners;
address public pauseOperator;
error ExpiredOrder();
error ProcessedOrder();
error CancelledOrder();
error InvalidOrder();
error InvalidCaller();
error InvalidSigner();
modifier onlyPauseOperator() {
if (msg.sender != pauseOperator) revert InvalidCaller();
_;
}
constructor(address pauseOperator_) {
pauseOperator = pauseOperator_;
}
function pause() external onlyPauseOperator {
_pause();
}
function unpause() external onlyPauseOperator {
_unpause();
}
function setAllowedSigner(address signer, bool value) external onlyOwner {
allowedSigners[signer] = value;
emit UpdateSigner(signer, value);
}
function setPauseOperator(address pauseOperator_) external onlyOwner {
address oldpauseOperator = pauseOperator;
pauseOperator = pauseOperator_;
emit UpdatePauseOperator(oldpauseOperator, pauseOperator_);
}
function _getCompletedKey(Order memory order) internal pure returns (uint256) {
return order.key;
}
function withdrawal(Order calldata order, Sig calldata sig) external whenNotPaused {
validateOrder(order, sig);
if (order.expiration <= block.timestamp) revert ExpiredOrder();
uint256 key = _getCompletedKey(order);
if (_status[key] == OrderStatus.Processed) revert ProcessedOrder();
if (_status[key] == OrderStatus.Cancelled) revert CancelledOrder();
_status[key] = OrderStatus.Processed;
IERC20(order.token).transferFrom(order.holder, order.to, order.amount);
emit WithdrawalEvent(order.key, order.signer, order.to, order.token, order.amount);
}
function cancel(Order calldata order, Sig calldata sig) external whenNotPaused {
validateOrder(order, sig);
uint256 key = _getCompletedKey(order);
if (_status[key] == OrderStatus.Processed) revert ProcessedOrder();
if (_status[key] == OrderStatus.Cancelled) revert CancelledOrder();
_status[key] = OrderStatus.Cancelled;
emit CancelEvent(order.key, order.signer, order.to, order.token, order.amount);
}
///@dev This function will be used in the future
// function multipleWithdrawal(Order[] calldata order, Sig[] calldata sig) external {
// for (uint256 i = 0; i < order.length; i++) {
// withdrawal(order[i], sig[i]);
// }
// }
function validateOrder(Order calldata order, Sig calldata sig) private view {
bytes32 payloadHash = keccak256(
abi.encode(order.signer, order.holder, order.to, order.token, order.amount, order.expiration, order.key)
);
bytes32 messageHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", payloadHash));
address actualSigner = ecrecover(messageHash, sig.v, sig.r, sig.s);
if (order.signer != actualSigner) revert InvalidOrder();
if (!allowedSigners[actualSigner]) revert InvalidSigner();
}
function getCompletedKey(Order calldata order) external pure returns (uint256) {
return _getCompletedKey(order);
}
function getStatus(uint256 key) external view returns (OrderStatus) {
return _status[key];
}
function getOrder(uint256 key) external view returns (Order memory) {
return orders[key];
}
}
Context.sol 24 lines
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @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;
}
}
Ownable.sol 76 lines
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../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.
*
* By default, the owner account will be the one that deploys the contract. 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;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing 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 {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_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);
}
}
Pausable.sol 91 lines
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/Pausable.sol)
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which allows children to implement an emergency stop
* mechanism that can be triggered by an authorized account.
*
* This module is used through inheritance. It will make available the
* modifiers `whenNotPaused` and `whenPaused`, which can be applied to
* the functions of your contract. Note that they will not be pausable by
* simply including this module, only once the modifiers are put in place.
*/
abstract contract Pausable is Context {
/**
* @dev Emitted when the pause is triggered by `account`.
*/
event Paused(address account);
/**
* @dev Emitted when the pause is lifted by `account`.
*/
event Unpaused(address account);
bool private _paused;
/**
* @dev Initializes the contract in unpaused state.
*/
constructor() {
_paused = false;
}
/**
* @dev Returns true if the contract is paused, and false otherwise.
*/
function paused() public view virtual returns (bool) {
return _paused;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*
* Requirements:
*
* - The contract must not be paused.
*/
modifier whenNotPaused() {
require(!paused(), "Pausable: paused");
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*
* Requirements:
*
* - The contract must be paused.
*/
modifier whenPaused() {
require(paused(), "Pausable: not paused");
_;
}
/**
* @dev Triggers stopped state.
*
* Requirements:
*
* - The contract must not be paused.
*/
function _pause() internal virtual whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/
function _unpause() internal virtual whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
}
IERC20.sol 82 lines
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @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);
}
Read Contract
allowedSigners 0xf8b4d864 → bool
getCompletedKey 0x1fe511cb → uint256
getOrder 0xd09ef241 → tuple
getStatus 0x5c622a0e → uint8
orders 0xa85c38ef → address, address, address, address, uint256, uint256, uint256
owner 0x8da5cb5b → address
pauseOperator 0x4afdcbde → address
paused 0x5c975abb → bool
Write Contract 8 functions
These functions modify contract state and require a wallet transaction to execute.
cancel 0x235cd1c3
tuple order
tuple sig
pause 0x8456cb59
No parameters
renounceOwnership 0x715018a6
No parameters
setAllowedSigner 0xf9213fc8
address signer
bool value
setPauseOperator 0x1ad4aa42
address pauseOperator_
transferOwnership 0xf2fde38b
address newOwner
unpause 0x3f4ba83a
No parameters
withdrawal 0xc87618d7
tuple order
tuple sig
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