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Contract

0x3067F32B868a3E59958f0d8C598B69016ADB328f
 

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0 ETH

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$0.00
Transaction Hash
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Block
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0x60806040197255902024-04-24 13:40:11126 days ago1713966011IN
 Create: EETHDepositHelper
0 ETH0.0500134826.21840085

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Contract Source Code Verified (Exact Match)

Contract Name:
EETHDepositHelper

Compiler Version
v0.8.23+commit.f704f362

Optimization Enabled:
Yes with 9999 runs

Other Settings:
paris EvmVersion
File 1 of 14 : EETHDepositHelper.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
pragma abicoder v2;

import {SafeERC20, IERC20, IERC20Permit} from "@oz/token/ERC20/utils/SafeERC20.sol";
import {IERC20Upgradeable} from "@ozu/token/ERC20/IERC20Upgradeable.sol";
import {ContextUpgradeable} from "@ozu/utils/ContextUpgradeable.sol";

import {LibPermit} from "@src/lib/Permit.sol";
import {Error} from "@src/lib/Error.sol";
import {IeETH, IweETH} from "@src/interfaces/EtherFi.sol";
import {ICCDMHost} from "@src/interfaces/ICCDMHost.sol";
import {IVault} from "@src/interfaces/vault/IVault.sol";

enum RemoteChainType {
    /// @dev 421_614
    ArbitrumSepolia,
    /// @dev 111_55_420
    OptimismSepolia,
    /// @dev 2_442
    PolygonZkEvmCardona,
    /// @dev 919
    ModeSepolia,
    /// @dev 3_441_006
    MantaPacificSepolia,
    /// @dev 42_161
    ArbitrumMainnet,
    /// @dev 10
    OptimismMainnet,
    /// @dev 1_101
    PolygonZkEvmMainnet,
    /// @dev 34_443
    ModeMainnet,
    /// @dev 169
    MantaPacificMainnet
}

/// @title EtherFi eETH Deposit / Redeem Helper
/// @author Eddy <[email protected]>
/// @notice implements deposit and redeem for eETH, This includes auto conversion between eETH <-> weETH
/// @dev If you want to use permit, you need to load the permit argument in the function
contract EETHDepositHelper is ContextUpgradeable {
    using LibPermit for bytes;
    using LibPermit for IERC20Permit;
    using SafeERC20 for IERC20;
    using SafeERC20 for IERC20Permit;

    IeETH private _eETH;
    IweETH private _weETH;

    constructor() initializer {}

    function initialize(IeETH eETH_, IweETH weETH_) public initializer {
        if (address(eETH_) == address(0)) revert Error.InvalidAddress("eETH");
        if (address(weETH_) == address(0)) revert Error.InvalidAddress("weETH");

        _eETH = eETH_;
        _weETH = weETH_;
    }

    // Modifiers

    modifier nonZero(uint256 amount) {
        if (amount <= 0) {
            revert Error.ZeroAmount();
        }
        _;
    }

    // View functions

    function eETH() external view returns (IeETH) {
        return _eETH;
    }

    function weETH() external view returns (IweETH) {
        return _weETH;
    }

    function previewDepositTo(
        RemoteChainType chainType,
        address ccdm,
        address receiver,
        address refundTo,
        uint256 amount,
        uint256 baseFee
    ) public view nonZero(amount) returns (uint256) {
        return ICCDMHost(ccdm).previewDeposit(
            _convertChainToDomain(chainType), address(_eETH), receiver, refundTo, _weETH.getWeETHByeETH(amount), baseFee
        );
    }

    function previewDepositWeEthTo(
        RemoteChainType chainType,
        address ccdm,
        address receiver,
        address refundTo,
        uint256 amount,
        uint256 baseFee
    ) public view nonZero(amount) returns (uint256) {
        return ICCDMHost(ccdm).previewDeposit(
            _convertChainToDomain(chainType), address(_weETH), receiver, refundTo, amount, baseFee
        );
    }

    // External functions

    //=========== deposit eETH

    function deposit(uint256 amount, address vault) external nonZero(amount) {
        IERC20(_eETH).safeTransferFrom(_msgSender(), address(this), amount);

        _deposit(_wrap(amount), vault);
    }

    /// @dev deposit with permit
    function deposit(uint256 amount, address vault, bytes calldata permitData) external nonZero(amount) {
        {
            (uint256 deadline, uint8 v, bytes32 r, bytes32 s) = permitData.decodeData();

            IERC20Permit(_eETH).trustlessPermit(_msgSender(), address(this), amount, deadline, v, r, s);
            IERC20(_eETH).safeTransferFrom(_msgSender(), address(this), amount);
        }

        _deposit(_wrap(amount), vault);
    }

    function depositTo(RemoteChainType remoteChain, address ccdm, uint256 amount) external payable nonZero(amount) {
        IERC20(_eETH).safeTransferFrom(_msgSender(), address(this), amount);

        _depositTo(remoteChain, ccdm, _wrap(amount), _msgSender(), _msgSender());
    }

    /// @dev deposit with permit
    function depositTo(RemoteChainType remoteChain, address ccdm, uint256 amount, bytes calldata permitData)
        external
        payable
        nonZero(amount)
    {
        {
            (uint256 deadline, uint8 v, bytes32 r, bytes32 s) = permitData.decodeData();

            IERC20Permit(_eETH).trustlessPermit(_msgSender(), address(this), amount, deadline, v, r, s);
            IERC20(_eETH).safeTransferFrom(_msgSender(), address(this), amount);
        }

        _depositTo(remoteChain, ccdm, _wrap(amount), _msgSender(), _msgSender());
    }

    function depositTo(RemoteChainType remoteChain, address ccdm, uint256 amount, address receiver, address refundTo)
        external
        payable
        nonZero(amount)
    {
        IERC20(_eETH).safeTransferFrom(_msgSender(), address(this), amount);

        _depositTo(remoteChain, ccdm, _wrap(amount), receiver, refundTo);
    }

    /// @dev deposit with permit
    function depositTo(
        RemoteChainType remoteChain,
        address ccdm,
        uint256 amount,
        address receiver,
        address refundTo,
        bytes calldata permitData
    ) external payable nonZero(amount) {
        {
            (uint256 deadline, uint8 v, bytes32 r, bytes32 s) = permitData.decodeData();

            IERC20Permit(_eETH).trustlessPermit(_msgSender(), address(this), amount, deadline, v, r, s);
            IERC20(_eETH).safeTransferFrom(_msgSender(), address(this), amount);
        }

        _depositTo(remoteChain, ccdm, _wrap(amount), receiver, refundTo);
    }

    //=========== deposit weETH

    function depositWeEth(uint256 amount, address vault) external nonZero(amount) {
        IERC20(_weETH).safeTransferFrom(_msgSender(), address(this), amount);

        _deposit(amount, vault);
    }

    /// @dev deposit with permit
    function depositWeEth(uint256 amount, address vault, bytes calldata permitData) external nonZero(amount) {
        {
            (uint256 deadline, uint8 v, bytes32 r, bytes32 s) = permitData.decodeData();

            IERC20Permit(_weETH).trustlessPermit(_msgSender(), address(this), amount, deadline, v, r, s);
            IERC20(_weETH).safeTransferFrom(_msgSender(), address(this), amount);
        }

        _deposit(amount, vault);
    }

    function depositWeEthTo(RemoteChainType remoteChain, address ccdm, uint256 amount)
        external
        payable
        nonZero(amount)
    {
        IERC20(_weETH).safeTransferFrom(_msgSender(), address(this), amount);

        _depositTo(remoteChain, ccdm, amount, _msgSender(), _msgSender());
    }

    function depositWeEthTo(
        RemoteChainType remoteChain,
        address ccdm,
        uint256 amount,
        address receiver,
        address refundTo
    ) external payable nonZero(amount) {
        IERC20(_weETH).safeTransferFrom(_msgSender(), address(this), amount);

        _depositTo(remoteChain, ccdm, amount, receiver, refundTo);
    }

    function depositWeEthTo(RemoteChainType remoteChain, address ccdm, uint256 amount, bytes calldata permitData)
        external
        payable
        nonZero(amount)
    {
        {
            (uint256 deadline, uint8 v, bytes32 r, bytes32 s) = permitData.decodeData();

            IERC20Permit(_weETH).trustlessPermit(_msgSender(), address(this), amount, deadline, v, r, s);
            IERC20(_weETH).safeTransferFrom(_msgSender(), address(this), amount);
        }

        _depositTo(remoteChain, ccdm, amount, _msgSender(), _msgSender());
    }

    function depositWeEthTo(
        RemoteChainType remoteChain,
        address ccdm,
        uint256 amount,
        address receiver,
        address refundTo,
        bytes calldata permitData
    ) external payable nonZero(amount) {
        {
            (uint256 deadline, uint8 v, bytes32 r, bytes32 s) = permitData.decodeData();

            IERC20Permit(_weETH).trustlessPermit(_msgSender(), address(this), amount, deadline, v, r, s);
            IERC20(_weETH).safeTransferFrom(_msgSender(), address(this), amount);
        }

        _depositTo(remoteChain, ccdm, amount, receiver, refundTo);
    }

    //=========== redeem

    function redeem(uint256 amount, address vault) external nonZero(amount) {
        IERC20(vault).safeTransferFrom(_msgSender(), address(this), amount);

        _redeem(amount, vault);
    }

    /// @dev redeem with permit
    function redeem(uint256 amount, address vault, bytes calldata permitData) external nonZero(amount) {
        (uint256 deadline, uint8 v, bytes32 r, bytes32 s) = permitData.decodeData();

        IERC20Permit(vault).trustlessPermit(_msgSender(), address(this), amount, deadline, v, r, s);
        IERC20(vault).safeTransferFrom(_msgSender(), address(this), amount);

        _redeem(amount, vault);
    }

    // Internal functions

    function _wrap(uint256 amount) internal returns (uint256) {
        IERC20(_eETH).forceApprove(address(_weETH), amount);
        uint256 weETHAmount = _weETH.wrap(amount);

        return weETHAmount;
    }

    function _convertChainToDomain(RemoteChainType remoteChain) internal pure returns (uint32) {
        if (remoteChain == RemoteChainType.ArbitrumMainnet) return 42_161;
        if (remoteChain == RemoteChainType.OptimismMainnet) return 10;
        if (remoteChain == RemoteChainType.PolygonZkEvmMainnet) return 1_101;
        if (remoteChain == RemoteChainType.ModeMainnet) return 34_443;
        if (remoteChain == RemoteChainType.MantaPacificMainnet) return 169;

        if (remoteChain == RemoteChainType.ArbitrumSepolia) return 421_614;
        if (remoteChain == RemoteChainType.OptimismSepolia) return 111_55_420;
        if (remoteChain == RemoteChainType.PolygonZkEvmCardona) return 2_442;
        if (remoteChain == RemoteChainType.ModeSepolia) return 919;
        if (remoteChain == RemoteChainType.MantaPacificSepolia) return 3_441_006;

        revert("EETHDepositHelper: invalid remote chain");
    }

    function _deposit(uint256 amount, address vault) internal {
        uint256 aboutToSpend = IVault(vault).previewDeposit(amount);
        IERC20(_weETH).forceApprove(address(vault), aboutToSpend);
        IVault(vault).deposit(aboutToSpend, _msgSender());
    }

    function _depositTo(RemoteChainType remoteChain, address ccdm, uint256 amount, address receiver, address refundTo)
        internal
    {
        IERC20(_weETH).forceApprove(ccdm, amount);

        uint32 domain = _convertChainToDomain(remoteChain);

        // precalculate gas needed
        uint256 gas = ICCDMHost(ccdm).previewDeposit(domain, address(_weETH), receiver, refundTo, amount, block.basefee);
        if (msg.value < gas) {
            unchecked {
                revert Error.InsufficientFee(gas - msg.value);
            }
        }

        // call ccdm.deposit
        ICCDMHost(ccdm).deposit{value: gas}(domain, address(_weETH), receiver, refundTo, amount);

        // refund remaining gas
        unchecked {
            uint256 refund = msg.value - gas;
            if (refund > 0) {
                (bool ok, bytes memory ret) = payable(_msgSender()).call{value: refund}("");
                if (!ok) {
                    revert Error.EthTransferFailed(refund, ret);
                }
            }
        }
    }

    function _redeem(uint256 amount, address vault) internal {
        IVault(vault).redeem(amount, _msgSender());
    }
}

File 2 of 14 : SafeERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/IERC20Permit.sol";
import "../../../utils/Address.sol";

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

    /**
     * @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.encodeWithSelector(token.transfer.selector, 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.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    /**
     * @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);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
        }
    }

    /**
     * @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.encodeWithSelector(token.approve.selector, spender, value);

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

    /**
     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
     * Revert on invalid signature.
     */
    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

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

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
    }

    /**
     * @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.isContract(address(token));
    }
}

File 3 of 14 : IERC20Upgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20Upgradeable {
    /**
     * @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 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 `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, 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 `from` to `to` 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 from, address to, uint256 amount) external returns (bool);
}

File 4 of 14 : ContextUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

/**
 * @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 ContextUpgradeable is Initializable {
    function __Context_init() internal onlyInitializing {
    }

    function __Context_init_unchained() internal onlyInitializing {
    }
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

File 5 of 14 : Permit.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
pragma abicoder v2;

import {IERC20} from "@oz/token/ERC20/IERC20.sol";
import {IERC20Permit} from "@oz/token/ERC20/extensions/IERC20Permit.sol";

library LibPermit {
    bytes32 private constant PERMIT_TYPEHASH =
        keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");

    bytes32 internal constant EIP712_DOMAIN_TYPE_HASH =
        keccak256("EIP712Domain(string name,string version,uint256 domain,address verifyingContract)");

    function decodeData(bytes calldata data) internal pure returns (uint256 deadline, uint8 v, bytes32 r, bytes32 s) {
        deadline = uint256(bytes32(data[0:32]));
        v = uint8(data[32]);
        r = bytes32(data[33:65]);
        s = bytes32(data[65:97]);

        return (deadline, v, r, s);
    }

    function encodeData(uint256 deadline, uint8 v, bytes32 r, bytes32 s) internal pure returns (bytes memory) {
        return abi.encodePacked(deadline, v, r, s);
    }

    function trustlessPermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        // Try permit() before allowance check to advance nonce if possible
        try token.permit(owner, spender, value, deadline, v, r, s) {
            return;
        } catch {
            // Permit potentially got frontran. Continue anyways if allowance is sufficient.
            if (IERC20(address(token)).allowance(owner, spender) >= value) {
                return;
            }
        }
        revert("Permit failure");
    }

    function makeDomainSeparator(string memory name, string memory version, uint256 _domain, address _contract)
        internal
        pure
        returns (bytes32)
    {
        return keccak256(abi.encode(EIP712_DOMAIN_TYPE_HASH, name, version, _domain, _contract));
    }

    function makeStructHash(address _owner, address _spender, uint256 _value, uint256 _nonce, uint256 _deadline)
        internal
        pure
        returns (bytes32)
    {
        return keccak256(abi.encode(PERMIT_TYPEHASH, _owner, _spender, _value, _nonce, _deadline));
    }

    function toTypedDataHashByAssembly(bytes32 _domainSeparator, bytes32 structHash)
        internal
        pure
        returns (bytes32 data)
    {
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, "\x19\x01")
            mstore(add(ptr, 0x02), _domainSeparator)
            mstore(add(ptr, 0x22), structHash)
            data := keccak256(ptr, 0x42)
        }
    }

    function toTypedDataHash(bytes32 _domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", _domainSeparator, structHash));
    }
}

File 6 of 14 : Error.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
pragma abicoder v2;

library Error {
    error Halted();
    error Unauthorized();
    error AssetNotSupportedForCrossChainDeposit(uint32 domain, address asset);

    error InsufficientCap();
    error InsufficientFee(uint256 lack);
    error InsufficientLoad();
    error InsufficientResolvedRedeem(uint256 left);
    error InsufficientBalance(uint256 left);

    error InvalidDomain(uint32 domain);
    error InvalidEpoch(string reason);
    error InvalidDepositRequest(string reason);

    error InvalidMsgLength(uint256 expected, uint256 actual);
    error InvalidMsgType(uint8 msgType);
    error InvalidVaultType(uint8 vaultType);
    error InvalidAddress(string typ);
    error InvalidThreshold(string typ);

    error VaultAlreadyDisconnected(address vault);
    error VaultAlreadyExists(address vault);
    error DeploymentFailed(string reason);
    error EthTransferFailed(uint256 amount, bytes ret);
    error BridgeNotOperational(uint32 domain);
    error ZeroAmount();
}

File 7 of 14 : EtherFi.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
pragma abicoder v2;

import {IERC20} from "@oz/token/ERC20/IERC20.sol";
import {IERC20Permit} from "@oz/token/ERC20/extensions/IERC20Permit.sol";

interface ILiquidityPool {
    struct PermitInput {
        uint256 value;
        uint256 deadline;
        uint8 v;
        bytes32 r;
        bytes32 s;
    }
}

interface IRateProvider {
    function getRate() external view returns (uint256);
}

interface IeETH is IERC20, IERC20Permit {
    function name() external pure returns (string memory);
    function symbol() external pure returns (string memory);
    function decimals() external pure returns (uint8);
    function totalShares() external view returns (uint256);

    function shares(address _user) external view returns (uint256);
    function balanceOf(address _user) external view returns (uint256);

    function initialize(address _liquidityPool) external;
    function mintShares(address _user, uint256 _share) external;
    function burnShares(address _user, uint256 _share) external;
    function transferFrom(address _sender, address _recipient, uint256 _amount) external returns (bool);
    function transfer(address _recipient, uint256 _amount) external returns (bool);
    function approve(address _spender, uint256 _amount) external returns (bool);
    function increaseAllowance(address _spender, uint256 _increaseAmount) external returns (bool);
    function decreaseAllowance(address _spender, uint256 _decreaseAmount) external returns (bool);
}

interface IweETH is IRateProvider, IERC20, IERC20Permit {
    /// @notice Wraps eEth
    /// @param _eETHAmount the amount of eEth to wrap
    /// @return returns the amount of weEth the user receives
    function wrap(uint256 _eETHAmount) external returns (uint256);

    /// @notice Wraps eEth with PermitInput struct so user does not have to call approve on eeth contract
    /// @param _eETHAmount the amount of eEth to wrap
    /// @return returns the amount of weEth the user receives
    function wrapWithPermit(uint256 _eETHAmount, ILiquidityPool.PermitInput calldata _permit)
        external
        returns (uint256);

    /// @notice Unwraps weETH
    /// @param _weETHAmount the amount of weETH to unwrap
    /// @return returns the amount of eEth the user receives
    function unwrap(uint256 _weETHAmount) external returns (uint256);

    /// @notice Fetches the amount of weEth respective to the amount of eEth sent in
    /// @param _eETHAmount amount sent in
    /// @return The total number of shares for the specified amount
    function getWeETHByeETH(uint256 _eETHAmount) external view returns (uint256);

    /// @notice Fetches the amount of eEth respective to the amount of weEth sent in
    /// @param _weETHAmount amount sent in
    /// @return The total amount for the number of shares sent in
    function getEETHByWeETH(uint256 _weETHAmount) external view returns (uint256);

    function increaseAllowance(address _spender, uint256 _increaseAmount) external returns (bool);
    function decreaseAllowance(address _spender, uint256 _decreaseAmount) external returns (bool);
}

File 8 of 14 : ICCDMHost.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
pragma abicoder v2;

interface ICCDMHost {
    function previewDeposit(
        uint32 domain,
        address token,
        address receiver,
        address refundTo,
        uint256 amount,
        uint256 baseFee
    ) external view returns (uint256);

    function deposit(uint32 domain, address token, address receiver, address refundTo, uint256 amount)
        external
        payable;

    function deposit(
        uint32 domain,
        address token,
        address receiver,
        address refundTo,
        uint256 amount,
        bytes calldata permitData
    ) external payable;
}

File 9 of 14 : IVault.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;
pragma abicoder v2;

import {IERC20Upgradeable} from "@ozu/token/ERC20/IERC20Upgradeable.sol";

enum Action {
    Deposit,
    Redeem,
    Mint,
    Burn,
    Transfer
}

enum VaultType {
    Basic,
    Rebased
}

interface IVault is IERC20Upgradeable {
    function vaultType() external view returns (VaultType);
    function isHalted(Action action) external view returns (bool);

    function previewDeposit(uint256 amount) external view returns (uint256);
    function previewRedeem(uint256 amount) external view returns (uint256);

    function deposit(uint256 amount, address receiver) external;
    function redeem(uint256 amount, address receiver) external;

    function halt(Action action) external;
    function resume(Action action) external;
}

interface ISudoVault is IVault {
    function manualDeposit(uint256 amount, address receiver) external returns (uint256);
    function manualRedeem(uint256 amount, address receiver) external returns (uint256);
}

File 10 of 14 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

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

File 11 of 14 : IERC20Permit.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @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.
 */
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].
     */
    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);
}

File 12 of 14 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://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/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) 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(errorMessage);
        }
    }
}

File 13 of 14 : Initializable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.2;

import "../../utils/AddressUpgradeable.sol";

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```solidity
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 *
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     * @custom:oz-retyped-from bool
     */
    uint8 private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint8 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts.
     *
     * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a
     * constructor.
     *
     * Emits an {Initialized} event.
     */
    modifier initializer() {
        bool isTopLevelCall = !_initializing;
        require(
            (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
            "Initializable: contract is already initialized"
        );
        _initialized = 1;
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * A reinitializer may be used after the original initialization step. This is essential to configure modules that
     * are added through upgrades and that require initialization.
     *
     * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
     * cannot be nested. If one is invoked in the context of another, execution will revert.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     *
     * WARNING: setting the version to 255 will prevent any future reinitialization.
     *
     * Emits an {Initialized} event.
     */
    modifier reinitializer(uint8 version) {
        require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
        _initialized = version;
        _initializing = true;
        _;
        _initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     *
     * Emits an {Initialized} event the first time it is successfully executed.
     */
    function _disableInitializers() internal virtual {
        require(!_initializing, "Initializable: contract is initializing");
        if (_initialized != type(uint8).max) {
            _initialized = type(uint8).max;
            emit Initialized(type(uint8).max);
        }
    }

    /**
     * @dev Returns the highest version that has been initialized. See {reinitializer}.
     */
    function _getInitializedVersion() internal view returns (uint8) {
        return _initialized;
    }

    /**
     * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
     */
    function _isInitializing() internal view returns (bool) {
        return _initializing;
    }
}

File 14 of 14 : AddressUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://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/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) 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(errorMessage);
        }
    }
}

Settings
{
  "remappings": [
    "@src/=src/",
    "@script/=script/",
    "@test/=test/",
    "@std/=lib/forge-std/src/",
    "@solmate/=lib/solmate/src/",
    "@hpl/=node_modules/@hyperlane-xyz/core/contracts/",
    "@openzeppelin/=node_modules/@openzeppelin/",
    "@oz/=node_modules/@openzeppelin/contracts/",
    "@ozu/=node_modules/@openzeppelin/contracts-upgradeable/",
    "@eth-optimism/=node_modules/@eth-optimism/",
    "@hyperlane-xyz/=node_modules/@hyperlane-xyz/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "eth-gas-reporter/=node_modules/eth-gas-reporter/",
    "forge-std/=lib/forge-std/src/",
    "hardhat/=node_modules/hardhat/",
    "solmate/=lib/solmate/src/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 9999
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "viaIR": false,
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes","name":"ret","type":"bytes"}],"name":"EthTransferFailed","type":"error"},{"inputs":[{"internalType":"uint256","name":"lack","type":"uint256"}],"name":"InsufficientFee","type":"error"},{"inputs":[{"internalType":"string","name":"typ","type":"string"}],"name":"InvalidAddress","type":"error"},{"inputs":[],"name":"ZeroAmount","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"version","type":"uint8"}],"name":"Initialized","type":"event"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"vault","type":"address"}],"name":"deposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"vault","type":"address"},{"internalType":"bytes","name":"permitData","type":"bytes"}],"name":"deposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"enum RemoteChainType","name":"remoteChain","type":"uint8"},{"internalType":"address","name":"ccdm","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"address","name":"refundTo","type":"address"},{"internalType":"bytes","name":"permitData","type":"bytes"}],"name":"depositTo","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"enum RemoteChainType","name":"remoteChain","type":"uint8"},{"internalType":"address","name":"ccdm","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes","name":"permitData","type":"bytes"}],"name":"depositTo","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"enum RemoteChainType","name":"remoteChain","type":"uint8"},{"internalType":"address","name":"ccdm","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"depositTo","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"enum RemoteChainType","name":"remoteChain","type":"uint8"},{"internalType":"address","name":"ccdm","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"address","name":"refundTo","type":"address"}],"name":"depositTo","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"vault","type":"address"}],"name":"depositWeEth","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"vault","type":"address"},{"internalType":"bytes","name":"permitData","type":"bytes"}],"name":"depositWeEth","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"enum RemoteChainType","name":"remoteChain","type":"uint8"},{"internalType":"address","name":"ccdm","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"address","name":"refundTo","type":"address"},{"internalType":"bytes","name":"permitData","type":"bytes"}],"name":"depositWeEthTo","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"enum RemoteChainType","name":"remoteChain","type":"uint8"},{"internalType":"address","name":"ccdm","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"depositWeEthTo","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"enum RemoteChainType","name":"remoteChain","type":"uint8"},{"internalType":"address","name":"ccdm","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes","name":"permitData","type":"bytes"}],"name":"depositWeEthTo","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"enum RemoteChainType","name":"remoteChain","type":"uint8"},{"internalType":"address","name":"ccdm","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"address","name":"refundTo","type":"address"}],"name":"depositWeEthTo","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"eETH","outputs":[{"internalType":"contract IeETH","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IeETH","name":"eETH_","type":"address"},{"internalType":"contract IweETH","name":"weETH_","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"enum RemoteChainType","name":"chainType","type":"uint8"},{"internalType":"address","name":"ccdm","type":"address"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"address","name":"refundTo","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"baseFee","type":"uint256"}],"name":"previewDepositTo","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"enum RemoteChainType","name":"chainType","type":"uint8"},{"internalType":"address","name":"ccdm","type":"address"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"address","name":"refundTo","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"baseFee","type":"uint256"}],"name":"previewDepositWeEthTo","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"vault","type":"address"}],"name":"redeem","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"vault","type":"address"},{"internalType":"bytes","name":"permitData","type":"bytes"}],"name":"redeem","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"weETH","outputs":[{"internalType":"contract IweETH","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.