Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta

More Options

• Similar
• Submit Audit
• Compare

// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.24;

import { Ownable2Step } from "@openzeppelin/contracts/access/Ownable2Step.sol";
import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

/// @title RetroRouter
/// @notice This contract allows to transfer tokens and ether to a target address only by allowed callers and emit events.
contract RetroRouter is Ownable2Step {
    using SafeERC20 for IERC20;

    /// @notice The target address to transfer tokens and ether.
    address public target;

    /// @notice The mapping of allowed tokens.
    mapping(IERC20 => bool) public isAllowedToken;

    /// @notice The mapping of allowed callers.
    mapping(address => bool) public isAllowedCaller;

    /// @notice The error message for unaceptable value.
    error UnacceptableValue();

    /// @notice The error message for caller not allowed.
    error CallerNotAllowed(address caller);

    /// @notice The error message for token not allowed.
    error TokenNotAllowed(address token);

    /// @notice The error message for ether transfer failed.
    error EtherTransferFailed();

    /// @notice The event emitted when a token is allowed or disallowed.
    /// @param token The address of the token.
    /// @param allowed The boolean value of the token.
    event AllowableTokenSet(IERC20 token, bool allowed);

    /// @notice The event emitted when a caller is allowed or disallowed.
    /// @param caller The address of the caller.
    /// @param allowed The boolean value of the caller.
    event AllowableCallerSet(address caller, bool allowed);

    /// @notice The event emitted when a token or ether is transferred.
    /// @param sender The address of the sender.
    /// @param target The address of the target.
    /// @param token The address of the token. Equals address zero if ether.
    /// @param amount The amount of the token or ether in wei.
    event Transferred(address sender, address target, address token, uint256 amount);

    /// @notice The event emitted when the target address is updated.
    /// @param newTarget The new target address.
    event TargetUpdated(address newTarget);

    /// @notice The modifier to allow only allowed callers.
    modifier onlyAllowedCaller() {
        if (!isAllowedCaller[msg.sender]) {
            revert CallerNotAllowed(msg.sender);
        }

        _;
    }

    /// @param initialOwner The initial owner of the contract.
    /// @param target_ The target address to transfer tokens and ether.
    constructor(address initialOwner, address target_) Ownable(initialOwner) {
        if (target_ == address(0)) {
            revert UnacceptableValue();
        }

        target = target_;
    }

    /// @notice Transfers the token to the target address.
    /// @param sender The address of the sender.
    /// @param token The address of the token.
    /// @param amount The amount of the token in wei.
    /// @dev The caller must be allowed. The token must be allowed.
    /// @dev The `amount` must be greater than zero.
    function transferToken(address sender, IERC20 token, uint256 amount) external onlyAllowedCaller {
        if (!isAllowedToken[token]) {
            revert TokenNotAllowed(address(token));
        }

        if (amount == 0) {
            revert UnacceptableValue();
        }

        token.safeTransferFrom(_msgSender(), target, amount);

        emit Transferred(sender, target, address(token), amount);
    }

    /// @notice Transfers the ether to the target address.
    /// @param sender The address of the sender.
    /// @dev The caller must be allowed.
    /// @dev The `msg.value` must be greater than zero.
    function transferEther(address sender) external payable onlyAllowedCaller {
        if (msg.value == 0) {
            revert UnacceptableValue();
        }

        (bool success,) = target.call{ value: msg.value }("");
        if (!success) {
            revert EtherTransferFailed();
        }

        emit Transferred(sender, target, address(0), msg.value);
    }

    /// @notice Sets the allowed tokens.
    /// @param tokens The array of the token addresses.
    /// @param allowed The boolean value of the token.
    function setAllowedTokens(IERC20[] calldata tokens, bool allowed) external onlyOwner {
        uint256 length = tokens.length;
        for (uint256 i = 0; i < length; i++) {
            if (isAllowedToken[tokens[i]] == allowed) {
                revert UnacceptableValue();
            }

            isAllowedToken[tokens[i]] = allowed;

            emit AllowableTokenSet(tokens[i], allowed);
        }
    }

    /// @notice Sets the allowed callers.
    /// @param caller The array of the caller addresses.
    /// @param allowed The boolean value of the caller.
    function setAllowedCallers(address[] calldata caller, bool allowed) external onlyOwner {
        uint256 length = caller.length;

        for (uint256 i = 0; i < length; i++) {
            if (isAllowedCaller[caller[i]] == allowed) {
                revert UnacceptableValue();
            }

            isAllowedCaller[caller[i]] = allowed;

            emit AllowableCallerSet(caller[i], allowed);
        }
    }

    /// @notice Updates the target address.
    /// @param newTarget The new target address.
    function updateTarget(address newTarget) external onlyOwner {
        if (newTarget == address(0)) {
            revert UnacceptableValue();
        }

        target = newTarget;

        emit TargetUpdated(newTarget);
    }

    /// @notice The function to renounce the ownership overriden to revert.
    function renounceOwnership() public view override onlyOwner {
        revert UnacceptableValue();
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable2Step.sol)

pragma solidity ^0.8.20;

import {Ownable} from "./Ownable.sol";

/**
 * @dev Contract module which provides access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is specified at deployment time in the constructor for `Ownable`. This
 * can later be changed with {transferOwnership} and {acceptOwnership}.
 *
 * This module is used through inheritance. It will make available all functions
 * from parent (Ownable).
 */
abstract contract Ownable2Step is Ownable {
    address private _pendingOwner;

    event OwnershipTransferStarted(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Returns the address of the pending owner.
     */
    function pendingOwner() public view virtual returns (address) {
        return _pendingOwner;
    }

    /**
     * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual override onlyOwner {
        _pendingOwner = newOwner;
        emit OwnershipTransferStarted(owner(), newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner.
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual override {
        delete _pendingOwner;
        super._transferOwnership(newOwner);
    }

    /**
     * @dev The new owner accepts the ownership transfer.
     */
    function acceptOwnership() public virtual {
        address sender = _msgSender();
        if (pendingOwner() != sender) {
            revert OwnableUnauthorizedAccount(sender);
        }
        _transferOwnership(sender);
    }
}

// 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) (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 v5.0.1) (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;
    }
}

// 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 v5.0.0) (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();
        }
    }
}

{
  "remappings": [
    "forge-std/=lib/forge-std/src/",
    "@openzeppelin/=node_modules/@openzeppelin/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "viaIR": false,
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"initialOwner","type":"address"},{"internalType":"address","name":"target_","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":[{"internalType":"address","name":"caller","type":"address"}],"name":"CallerNotAllowed","type":"error"},{"inputs":[],"name":"EtherTransferFailed","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"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"TokenNotAllowed","type":"error"},{"inputs":[],"name":"UnacceptableValue","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"caller","type":"address"},{"indexed":false,"internalType":"bool","name":"allowed","type":"bool"}],"name":"AllowableCallerSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"contract IERC20","name":"token","type":"address"},{"indexed":false,"internalType":"bool","name":"allowed","type":"bool"}],"name":"AllowableTokenSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferStarted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"newTarget","type":"address"}],"name":"TargetUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"address","name":"target","type":"address"},{"indexed":false,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Transferred","type":"event"},{"inputs":[],"name":"acceptOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"isAllowedCaller","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"name":"isAllowedToken","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pendingOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"caller","type":"address[]"},{"internalType":"bool","name":"allowed","type":"bool"}],"name":"setAllowedCallers","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20[]","name":"tokens","type":"address[]"},{"internalType":"bool","name":"allowed","type":"bool"}],"name":"setAllowedTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"target","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"}],"name":"transferEther","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newTarget","type":"address"}],"name":"updateTarget","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

000000000000000000000000385b1b18dee2322078f8022cbafb8505e6a9b3b9000000000000000000000000009905bf008cca637185eeafe8f51bb56dd2aca7

-----Decoded View---------------
Arg [0] : initialOwner (address): 0x385B1b18dEE2322078f8022cBaFB8505E6A9B3b9
Arg [1] : target_ (address): 0x009905bf008CcA637185EEaFE8F51BB56dD2ACa7

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000385b1b18dee2322078f8022cbafb8505e6a9b3b9
Arg [1] : 000000000000000000000000009905bf008cca637185eeafe8f51bb56dd2aca7