Description:
Multi-signature wallet contract requiring multiple confirmations for transaction execution.
Blockchain: Ethereum
Source Code: View Code On The Blockchain
Solidity Source Code:
{{
"language": "Solidity",
"sources": {
"@openzeppelin/contracts/access/Ownable.sol": {
"content": "// 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);
}
}
"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/IERC20.sol)
pragma solidity >=0.4.16;
/**
* @dev Interface of the ERC-20 standard as defined in the ERC.
*/
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);
}
"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// 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;
}
}
"
},
"contracts/SelfRescueRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.26;
/* *
* /$$$$$$
* /$$__ $$
*| $$ \__/ /$$ /$$ /$$$$$$$ /$$$$$$ /$$$$$$ /$$$$$$ /$$ /$$
*| $$$$$$ | $$ | $$| $$__ $$ /$$__ $$ /$$__ $$ /$$__ $$| $$ | $$
* \____ $$| $$ | $$| $$ \ $$| $$$$$$$$| $$ \__/| $$ \ $$| $$ | $$
* /$$ \ $$| $$ | $$| $$ | $$| $$_____/| $$ | $$ | $$| $$ | $$
*| $$$$$$/| $$$$$$$| $$ | $$| $$$$$$$| $$ | $$$$$$$| $$$$$$$
* \______/ \____ $$|__/ |__/ \_______/|__/ \____ $$ \____ $$
* /$$ | $$ /$$ \ $$ /$$ | $$
* | $$$$$$/ | $$$$$$/| $$$$$$/
* \______/ \______/ \______/
* /$$$$$$ /$$ /$$$$$$ /$$$$$$$
* /$$__ $$ | $$ /$$__ $$ | $$__ $$
*| $$ \__/ /$$$$$$ | $$| $$ \__/ | $$ \ $$ /$$$$$$ /$$$$$$$ /$$$$$$$ /$$ /$$ /$$$$$$
*| $$$$$$ /$$__ $$| $$| $$$$ /$$$$$$| $$$$$$$/ /$$__ $$ /$$_____/ /$$_____/| $$ | $$ /$$__ $$
* \____ $$| $$$$$$$$| $$| $$_/|______/| $$__ $$| $$$$$$$$| $$$$$$ | $$ | $$ | $$| $$$$$$$$
* /$$ \ $$| $$_____/| $$| $$ | $$ \ $$| $$_____/ \____ $$| $$ | $$ | $$| $$_____/
*| $$$$$$/| $$$$$$$| $$| $$ | $$ | $$| $$$$$$$ /$$$$$$$/| $$$$$$$| $$$$$$/| $$$$$$$
* \______/ \_______/|__/|__/ |__/ |__/ \_______/|_______/ \_______/ \______/ \_______/
*
*
*
* /$$$$$$$ /$$ /$$
*| $$__ $$ |__/ | $$
*| $$ \ $$ /$$$$$$ /$$$$$$ /$$ /$$$$$$$ /$$$$$$ /$$$$$$ /$$ /$$
*| $$$$$$$/ /$$__ $$ /$$__ $$| $$ /$$_____/|_ $$_/ /$$__ $$| $$ | $$
*| $$__ $$| $$$$$$$$| $$ \ $$| $$| $$$$$$ | $$ | $$ \__/| $$ | $$
*| $$ \ $$| $$_____/| $$ | $$| $$ \____ $$ | $$ /$$| $$ | $$ | $$
*| $$ | $$| $$$$$$$| $$$$$$$| $$ /$$$$$$$/ | $$$$/| $$ | $$$$$$$
*|__/ |__/ \_______/ \____ $$|__/|_______/ \___/ |__/ \____ $$
* /$$ \ $$ /$$ | $$
* | $$$$$$/ | $$$$$$/
* \______/ \______/
* */
/**
* SelfRescueRegistry
* ------------------
* - Users opt-in by registering a recovery address and a timelock.
* - They can **initiate** a rescue which starts the clock.
* - After the timelock, anyone can call `executeRescue(from)` but funds move **only to the registered recovery**.
* - Users can **cancel** before the timelock elapses.
* - No owner seizes funds; no centralized role invokes arbitrary transfers.
* - Marked as a **rescue executor** for SNRG so restricted transfers allow this move.
*/
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
interface IRestrictedToken is IERC20 {
function transferFrom(address from, address to, uint256 amount) external returns (bool);
}
contract SelfRescueRegistry is Ownable {
struct Plan {
address recovery;
uint64 delay; // seconds
uint64 eta; // when executable (0 = none / canceled)
}
// MODIFIED: Added constant for clarity
uint64 public constant MINIMUM_RESCUE_DELAY = 1 days;
mapping(address => Plan) public plans;
address public token;
mapping(address => bool) public isExecutor; // contracts allowed to call token during execute
event PlanRegistered(address indexed user, address indexed recovery, uint64 delay);
event RescueInitiated(address indexed user, uint64 eta);
event RescueCanceled(address indexed user);
event RescueExecuted(address indexed user, address indexed recovery, uint256 amount);
event ExecutorSet(address indexed executor, bool enabled);
constructor(address owner_) Ownable(owner_) {
isExecutor[address(this)] = true; // registry itself is an executor
emit ExecutorSet(address(this), true);
}
function registerPlan(address recovery, uint64 delay) external {
require(recovery != address(0), "recovery=0");
// MODIFIED: Using constant
require(delay >= MINIMUM_RESCUE_DELAY, "delay too short");
plans[msg.sender] = Plan({recovery: recovery, delay: delay, eta: 0});
emit PlanRegistered(msg.sender, recovery, delay);
}
function initiateRescue() external {
Plan storage p = plans[msg.sender];
require(p.recovery != address(0), "no plan");
p.eta = uint64(block.timestamp) + p.delay;
emit RescueInitiated(msg.sender, p.eta);
}
function cancelRescue() external {
Plan storage p = plans[msg.sender];
require(p.eta != 0, "no active");
p.eta = 0;
emit RescueCanceled(msg.sender);
}
function canExecuteRescue(address victim) external view returns (bool) {
Plan memory p = plans[victim];
return (p.eta != 0 && block.timestamp >= p.eta);
}
function isRescueExecutor(address caller) external view returns (bool) {
return isExecutor[caller];
}
function setExecutor(address exec, bool enabled) external onlyOwner {
isExecutor[exec] = enabled;
emit ExecutorSet(exec, enabled);
}
function setToken(address _token) external onlyOwner {
require(token == address(0), "Token address already set");
require(_token != address(0), "token=0");
token = _token;
}
/**
* Executes the rescue by transferring the specified balance to the recovery address.
* This call is permissionless once matured.
* MODIFIED: Now accepts an `amount` for flexible rescues.
*/
function executeRescue(address victim, uint256 amount) external {
Plan memory p = plans[victim];
require(p.eta != 0 && block.timestamp >= p.eta, "not matured");
require(amount > 0, "amount=0");
// Clear ETA to prevent re-entrancy or repeated calls for the *same* initiation
plans[victim].eta = 0;
uint256 balance = IERC20(token).balanceOf(victim);
require(amount <= balance, "insufficient balance");
bool ok = IRestrictedToken(token).transferFrom(victim, p.recovery, amount);
require(ok, "transferFrom fail");
emit RescueExecuted(victim, p.recovery, amount);
}
}"
}
},
"settings": {
"optimizer": {
"enabled": true,
"runs": 200
},
"evmVersion": "paris",
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
Submitted on: 2025-10-10 09:03:18
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