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

import { ReentrancyV2 } from "./ReentrancyV2.sol";

import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import { IBasicAMBMediator } from "../interfaces/IBasicAMBMediator.sol";
import { IBasicForeignAMB } from "../interfaces/IBasicForeignAMB.sol";
import { IBridgeValidators } from "../interfaces/IBridgeValidators.sol";
import { IOmnibridge } from "../interfaces/IOmnibridge.sol";
import { IWETH as IWNative } from "../interfaces/IWETH.sol";

import { AddressHelper } from "../libraries/AddressHelper.sol";
import { Bytes } from "../libraries/Bytes.sol";

import { OwnableModule } from "../upgradeable_contracts/modules/OwnableModule.sol";
import { Claimable } from "../upgradeable_contracts/Claimable.sol";
import { StorageSlot } from "@openzeppelin/contracts/utils/StorageSlot.sol";

/**
 * @title TokenOmnibridgeRouter
 * @dev Omnibridge extension for processing tokens that are not otherwise
 * delivered automatically because of foreign omnibridge settings
 */
contract TokenOmnibridgeRouter is OwnableModule, Claimable, ReentrancyV2 {
    using SafeERC20 for IERC20;
    bool public immutable EIP1559_ENABLED;
    IOmnibridge public immutable bridge;
    IWNative public immutable WNative;
    address public validatorsFilter;
    mapping(address => bool) public isValidator;

    error NotPayable();

    bytes32 public constant RUNNER_SLOT = keccak256(abi.encode("omnibridgerouter.runner"));

    /**
     * @dev Initializes this contract.
     * @param _bridge address of the HomeOmnibridge/ForeignOmnibridge contract.
     * @param _wNative address of the WNative token used for wrapping/unwrapping native coins (e.g. WETH/WBNB/WXDAI).
     * @param _owner address of the contract owner.
     */
    constructor(
        IOmnibridge _bridge,
        IWNative _wNative,
        address _owner,
        bool _EIP1559_ENABLED
    ) OwnableModule(_owner) {
        bridge = _bridge;
        WNative = _wNative;
        _wNative.approve(address(_bridge), type(uint256).max);
        validatorsFilter = address(this);
        EIP1559_ENABLED = _EIP1559_ENABLED;
    }

    /**
     * @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 {
        _relayTokensAndCall(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) external payable {
        _relayTokensAndCall(_receiver, "");
    }
    /**
     * a convenience method for relaying tokens to a corresponding network
     * @param _receiver the receiving contract on the other network
     * @param _data the encoded data that should be passed to `onTokenBridged` on the other network
     */
    function relayTokensAndCall(address _receiver, bytes calldata _data) external payable {
        _relayTokensAndCall(_receiver, _data);
    }
    function _relayTokensAndCall(address _receiver, bytes memory _data) internal {
        WNative.deposit{ value: msg.value }();
        bridge.relayTokensAndCall(address(WNative), _receiver, msg.value, _data);
    }

    struct FeeDirector {
        address recipient;
        // a list of up to 256 flags for modifying how the contract handles tokens
        // 0th index is to use the limit as the fee amount
        // 1st index is to unwrap the tokens
        // 2nd is to ask the system to not include the priority fee
        // 3rd is to use the multiplier as a factor of total tokens
        // if a base fee is available it will only use that
        uint256 settings;
        uint256 limit;
        uint256 multiplier;
    }

    /**
     * @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 WNative.
     * @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 payable virtual nonReentrant {
        require(msg.sender == address(bridge));

        if (_data.length == 20) {
            // handling legacy WNative -> Native
            require(_token == address(WNative));
            WNative.withdraw(_value);
            AddressHelper.safeSendValue(payable(Bytes.bytesToAddress(_data)), _value);
        } else {
            FeeDirector memory feeDirector = abi.decode(_data, (FeeDirector));
            // setting at the 0th slot from the right is a signal to unwrap the tokens
            bool toNative = feeDirector.settings << 254 >> 255 == 1 && address(WNative) == _token;
            // handling WNative -> Native
            if (toNative && _token == address(WNative)) {
                WNative.withdraw(_value);
            }
            uint256 runner = StorageSlot.getUint256Slot(RUNNER_SLOT).value;
            uint256 fees;
            uint256 toRecipient = _value;
            if (runner > 1) {
                // setting at the 1st slot from the right is a signal to use the limit as the fixed fee
                (fees, toRecipient) = _feeInfo(toNative, _value, runner, feeDirector);
            }
            if (toRecipient > 0) {
                _distribute(toNative, _token, feeDirector.recipient, toRecipient);
            }
            if (fees > 0) {
                _distribute(toNative, _token, address(uint160(runner >> 96)), fees);
            }
        }
    }

    function _distribute(bool native, address token, address recipient, uint256 amount) internal {
        if (native) {
            (bool success, ) = recipient.call{value: amount}("");
            if (!success) {
                revert NotPayable();
            }
        } else {
            IERC20(token).safeTransfer(recipient, amount);
        }
    }

    function _feeInfo(
        bool toNative, uint256 _value, uint256 runner,
        FeeDirector memory feeDirector
    ) internal view returns(uint256 fees, uint256 toRecipient) {
        // use the limit as the fee
        if (feeDirector.settings << 255 >> 255 == 1) {
            fees = feeDirector.limit;
        } else if (feeDirector.settings << 252 >> 255 == 1) {
            fees = (_value * feeDirector.multiplier) / 1 ether;
        } else {
            // a runner has been named (does not have to match sender)
            uint256 gasUsed = uint256(uint96(runner)) - gasleft();
            // extra 50k added for 2x transfer handling + 10%
            // to cover profit motive + risk compensation
            uint256 baselineFee = _baseFee((feeDirector.settings << 253 >> 255) == 1);
            fees = ((gasUsed + (
                // this is an unwrap, different costs for tokens vs native
                toNative ? 50_000 : 100_000
            )) * feeDirector.multiplier * baselineFee) / 1 ether;
            // fees must not be greater than limit
            fees = fees > feeDirector.limit ? feeDirector.limit : fees;
        }
        // fees must not be greater than value
        fees = fees > _value ? _value : fees;
        toRecipient = _value - fees;
    }

    function feeInfo(
        bool toNative, uint256 _value, uint256 runner,
        FeeDirector calldata feeDirector
    ) external view returns(uint256, uint256) {
        return _feeInfo(toNative, _value, runner, feeDirector);
    }

    function baseFee(bool excludePriority) external view returns(uint256) {
        return _baseFee(excludePriority);
    }

    function _baseFee(bool excludePriority) internal view returns(uint256) {
        return EIP1559_ENABLED && excludePriority ? block.basefee : tx.gasprice;
    }

    /**
     * @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 WNative contract when withdrawing native coins. Will revert otherwise.
     */
    receive() external payable {
        require(msg.sender == address(WNative));
    }
    /**
     * @dev Validates provided signatures and relays a given message. Passes all available gas for the execution.
     * The message is not allowed to fail. The whole tx will be revered if message fails.
     * @param runner the validator you would like to attribute this method call to
     * @param _data bytes to be relayed
     * @param _signatures bytes blob with signatures to be validated
     * @notice that the sender does not matter, so this method could be called via
     * multicall for more efficient gas savings and still attribute tokens to the validator appropriately
     */
    function safeExecuteSignaturesWithAutoGasLimit(
        address runner,
        bytes calldata _data,
        bytes calldata _signatures
    ) external payable nonReentrantUint256(RUNNER_SLOT, uint256(uint96(gasleft())) | (uint256(uint160(runner)) << 96)) {
        if (!IBridgeValidators(validatorsFilter).isValidator(runner)) {
            revert NotPayable();
        }
        IBasicForeignAMB(address(IBasicAMBMediator(address(bridge)).bridgeContract()))
            .safeExecuteSignaturesWithAutoGasLimit(_data, _signatures);
    }
    /**
     * updates the filter to any contract.
     * for future use case, this is the bridge's validator contract
     */
    function setValidatorsFilter(address _validatorsFilter) external payable onlyOwner {
        // if this doesn't fail we are at least guaranteed that it has the method
        IBridgeValidators(_validatorsFilter).isValidator(address(0));
        validatorsFilter = _validatorsFilter;
    }
    /** mev protection management */
    function setValidatorStatus(address _validator, bool _isValidator) external payable onlyOwner {
        isValidator[_validator] = _isValidator;
    }
}

// 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) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the value of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 value) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 value) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC20Permit} from "../extensions/IERC20Permit.sol";
import {Address} from "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    /**
     * @dev An operation with an ERC20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data);
        if (returndata.length != 0 && !abi.decode(returndata, (bool))) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && address(token).code.length > 0;
    }
}

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

pragma solidity ^0.8.20;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev The ETH balance of the account is not enough to perform the operation.
     */
    error AddressInsufficientBalance(address account);

    /**
     * @dev There's no code at `target` (it is not a contract).
     */
    error AddressEmptyCode(address target);

    /**
     * @dev A call to an address target failed. The target may have reverted.
     */
    error FailedInnerCall();

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        if (address(this).balance < amount) {
            revert AddressInsufficientBalance(address(this));
        }

        (bool success, ) = recipient.call{value: amount}("");
        if (!success) {
            revert FailedInnerCall();
        }
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason or custom error, it is bubbled
     * up by this function (like regular Solidity function calls). However, if
     * the call reverted with no returned reason, this function reverts with a
     * {FailedInnerCall} error.
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        if (address(this).balance < value) {
            revert AddressInsufficientBalance(address(this));
        }
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target
     * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an
     * unsuccessful call.
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata
    ) internal view returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            // only check if target is a contract if the call was successful and the return data is empty
            // otherwise we already know that it was a contract
            if (returndata.length == 0 && target.code.length == 0) {
                revert AddressEmptyCode(target);
            }
            return returndata;
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the
     * revert reason or with a default {FailedInnerCall} error.
     */
    function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            return returndata;
        }
    }

    /**
     * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}.
     */
    function _revert(bytes memory returndata) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert FailedInnerCall();
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/StorageSlot.sol)
// This file was procedurally generated from scripts/generate/templates/StorageSlot.js.

pragma solidity ^0.8.20;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```solidity
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(newImplementation.code.length > 0);
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    struct StringSlot {
        string value;
    }

    struct BytesSlot {
        bytes value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` with member `value` located at `slot`.
     */
    function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` representation of the string storage pointer `store`.
     */
    function getStringSlot(string storage store) internal pure returns (StringSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` with member `value` located at `slot`.
     */
    function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`.
     */
    function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }
}

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

import { StorageSlot } from "@openzeppelin/contracts/utils/StorageSlot.sol";

abstract contract ReentrancyV2 {
  error ReentrancyGuard();
  error InvalidValue();
  uint256 private constant _ENTERED = 2;
  uint256 private constant _NOT_ENTERED = 1;
  // global reentrant
  uint256 internal reentrant;

  modifier nonReentrant() {
    if (uint256(reentrant) > _NOT_ENTERED) {
      revert ReentrancyGuard();
    }
    reentrant = _ENTERED;
    _;
    reentrant = _NOT_ENTERED;
  }
  modifier nonReentrantUint256(bytes32 key, uint256 value) {
    if (value < _ENTERED) {
      revert InvalidValue();
    }
    StorageSlot.Uint256Slot storage slot = StorageSlot.getUint256Slot(key);
    if (slot.value > _NOT_ENTERED) {
      revert ReentrancyGuard();
    }
    slot.value = value;
    _;
    slot.value = _NOT_ENTERED;
  }
}

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

interface IAMB {
    event UserRequestForAffirmation(bytes32 indexed messageId, bytes encodedData);
    event UserRequestForSignature(bytes32 indexed messageId, bytes encodedData);
    event AffirmationCompleted(
        address indexed sender,
        address indexed executor,
        bytes32 indexed messageId,
        bool status
    );
    event RelayedMessage(address indexed sender, address indexed executor, bytes32 indexed messageId, bool status);

    function messageSender() external view returns (address);

    function maxGasPerTx() external view returns (uint256);

    function transactionHash() external view returns (bytes32);

    function messageId() external view returns (bytes32);

    function messageSourceChainId() external view returns (bytes32);

    function messageCallStatus(bytes32 _messageId) external view returns (bool);

    function failedMessageDataHash(bytes32 _messageId) external view returns (bytes32);

    function failedMessageReceiver(bytes32 _messageId) external view returns (address);

    function failedMessageSender(bytes32 _messageId) external view returns (address);

    function requireToPassMessage(
        address _contract,
        bytes calldata _data,
        uint256 _gas
    ) external returns (bytes32);

    function requireToConfirmMessage(
        address _contract,
        bytes calldata _data,
        uint256 _gas
    ) external returns (bytes32);

    function sourceChainId() external view returns (uint256);

    function destinationChainId() external view returns (uint256);
}

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

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

interface IBasicAMBMediator {
  function bridgeContract() external view returns (IAMB);
}

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

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

interface IBasicForeignAMB {
    function safeExecuteSignaturesWithAutoGasLimit(bytes calldata _data, bytes calldata _signatures) external;

    function validatorContract() external view returns (IBridgeValidators);

    function relayTokens(address _receiver, uint256 _amount) external;
}

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

interface IBridgeValidators {
    function isValidator(address _validator) external view returns (bool);

    function F_ADDR() external view returns (address);

    function getNextValidator(address _address) external view returns (address);

    function validatorCount() external view returns (uint256);

    function validatorList() external view returns(address[] memory);
}

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

interface IOmnibridge {
    function relayTokens(
        address _token,
        address _receiver,
        uint256 _value
    ) external;
    function relayTokensAndCall(
        address _token,
        address _receiver,
        uint256 _value,
        bytes calldata _data
    ) external;
}

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

interface IWETH {
    function deposit() external payable;

    function withdraw(uint256 _value) external;

    function approve(address _to, uint256 _value) external;
}

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

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);
        }
    }
}

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

/**
 * @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))
        }
    }
}

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

import "@openzeppelin/contracts/token/ERC20/utils/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 virtual {
        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 virtual {
        IERC20 token = IERC20(_token);
        uint256 balance = token.balanceOf(address(this));
        token.safeTransfer(_to, balance);
    }
}

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

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;
    }
}

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

contract Sacrifice {
    constructor(address payable _recipient) payable {
        selfdestruct(_recipient);
    }
}

{
  "evmVersion": "paris",
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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0000000000000000000000001715a3e4a142d8b698131108995174f37aeba10d000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2000000000000000000000000af2ce0189f46f5663715b0b9ed2a10ea924ab9b00000000000000000000000000000000000000000000000000000000000000001

-----Decoded View---------------
Arg [0] : _bridge (address): 0x1715a3E4A142d8b698131108995174F37aEBA10D
Arg [1] : _wNative (address): 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2
Arg [2] : _owner (address): 0xAF2ce0189f46f5663715b0b9ED2a10eA924AB9B0
Arg [3] : _EIP1559_ENABLED (bool): True

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 0000000000000000000000001715a3e4a142d8b698131108995174f37aeba10d
Arg [1] : 000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2
Arg [2] : 000000000000000000000000af2ce0189f46f5663715b0b9ed2a10ea924ab9b0
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000001