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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import {LikwidSlaveChannel} from "./lib/LikwidSlaveChannel.sol";

contract ChannelSlave is LikwidSlaveChannel {
    constructor(
        uint64 _masterChainId,
        address _masterAddress,
        address _vizingPad,
        address _managerAddress
    ) LikwidSlaveChannel(_masterChainId, _masterAddress, _vizingPad) {
        minArrivalTime = 1 minutes;
        maxArrivalTime = 1 days;
        minGasLimit = 100000;
        maxGasLimit = 1000000;
        selectedRelayer = address(0);
        transferOwnership(_managerAddress);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// 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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

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

interface IMessageChannel is IMessageStruct {
    /*
        /// @notice LaunchPad is the function that user or DApps send omni-chain message to other chain
        ///         Once the message is sent, the Relay will validate the message and send it to the target chain
        /// @dev 1. we will call the LaunchPad.Launch function to emit the message
        /// @dev 2. the message will be sent to the destination chain
        /// @param earliestArrivalTimestamp The earliest arrival time for the message
        ///        set to 0, vizing will forward the information ASAP.
        /// @param latestArrivalTimestamp The latest arrival time for the message
        ///        set to 0, vizing will forward the information ASAP.
        /// @param relayer the specify relayer for your message
        ///        set to 0, all the relayers will be able to forward the message
        /// @param sender The sender address for the message
        ///        most likely the address of the EOA, the user of some DApps
        /// @param value native token amount, will be sent to the target contract
        /// @param destChainid The destination chain id for the message
        /// @param additionParams The addition params for the message
        ///        if not in expert mode, set to 0 (`new bytes(0)`)
        /// @param message Arbitrary information
        ///
        ///    bytes                         
        ///   message  = abi.encodePacked(
        ///         byte1           uint256         uint24        uint64        bytes
        ///     messageType, activateContract, executeGasLimit, maxFeePerGas, signature
        ///   )
        ///        
    */
    function Launch(
        uint64 earliestArrivalTimestamp,
        uint64 latestArrivalTimestamp,
        address relayer,
        address sender,
        uint256 value,
        uint64 destChainid,
        bytes calldata additionParams,
        bytes calldata message
    ) external payable;

    ///
    ///    bytes                          byte1           uint256         uint24        uint64        bytes
    ///   message  = abi.encodePacked(messageType, activateContract, executeGasLimit, maxFeePerGas, signature)
    ///
    function launchMultiChain(
        launchEnhanceParams calldata params
    ) external payable;

    /// @notice batch landing message to the chain, execute the landing message
    /// @dev trusted relayer will call this function to send omni-chain message to the Station
    /// @param params the landing message params
    /// @param proofs the  proof of the validated message
    function Landing(
        landingParams[] calldata params,
        bytes[][] calldata proofs
    ) external payable;

    /// @notice similar to the Landing function, but with gasLimit
    function LandingSpecifiedGas(
        landingParams[] calldata params,
        uint24 gasLimit,
        bytes[][] calldata proofs
    ) external payable;

    /// @dev feel free to call this function before pass message to the Station,
    ///      this method will return the protocol fee that the message need to pay, longer message will pay more
    function estimateGas(
        uint256[] calldata value,
        uint64[] calldata destChainid,
        bytes[] calldata additionParams,
        bytes[] calldata message
    ) external view returns (uint256);

    function estimateGas(
        uint256 value,
        uint64 destChainid,
        bytes calldata additionParams,
        bytes calldata message
    ) external view returns (uint256);

    function estimatePrice(
        address sender,
        uint64 destChainid
    ) external view returns (uint64);

    function gasSystemAddr() external view returns (address);

    /// @dev get the message launch nonce of the sender on the specific chain
    /// @param chainId the chain id of the sender
    /// @param sender the address of the sender
    function GetNonceLaunch(
        uint64 chainId,
        address sender
    ) external view returns (uint32);

    /// @dev get the message landing nonce of the sender on the specific chain
    /// @param chainId the chain id of the sender
    /// @param sender the address of the sender
    function GetNonceLanding(
        uint64 chainId,
        address sender
    ) external view returns (uint32);

    /// @dev get the version of the Station
    /// @return the version of the Station, like "v1.0.0"
    function Version() external view returns (string memory);

    /// @dev get the chainId of current Station
    /// @return chainId, defined in the L2SupportLib.sol
    function Chainid() external view returns (uint64);

    function minArrivalTime() external view returns (uint64);

    function maxArrivalTime() external view returns (uint64);

    function expertLandingHook(bytes1 hook) external view returns (address);

    function expertLaunchHook(bytes1 hook) external view returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

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

interface IMessageDashboard is IMessageStruct {
    /// @dev Only owner can call this function to stop or restart the engine
    /// @param stop true is stop, false is start
    function PauseEngine(bool stop) external;

    /// @notice return the states of the engine
    /// @return 0x01 is stop, 0x02 is start
    function engineState() external view returns (uint8);

    /// @notice return the states of the engine & Landing Pad
    function padState() external view returns (uint8, uint8);

    // function mptRoot() external view returns (bytes32);

    /// @dev withdraw the protocol fee from the contract, only owner can call this function
    /// @param amount the amount of the withdraw protocol fee
    function Withdraw(uint256 amount, address to) external;

    /// @dev set the payment system address, only owner can call this function
    /// @param gasSystemAddress the address of the payment system
    function setGasSystem(address gasSystemAddress) external;

    function setExpertLaunchHooks(
        bytes1[] calldata ids,
        address[] calldata hooks
    ) external;

    function setExpertLandingHooks(
        bytes1[] calldata ids,
        address[] calldata hooks
    ) external;

    /// notice reset the permission of the contract, only owner can call this function
    function roleConfiguration(
        bytes32 role,
        address[] calldata accounts,
        bool[] calldata states
    ) external;

    function stationAdminSetRole(
        bytes32 role,
        address[] calldata accounts,
        bool[] calldata states
    ) external;

    /// @notice transfer the ownership of the contract, only owner can call this function
    function transferOwnership(address newOwner) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

import "./IMessageSpaceStation.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface IMessageEmitter {
    function minArrivalTime() external view returns (uint64);

    function maxArrivalTime() external view returns (uint64);

    function minGasLimit() external view returns (uint24);

    function maxGasLimit() external view returns (uint24);

    function defaultBridgeMode() external view returns (bytes1);

    function selectedRelayer() external view returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

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

interface IMessageEvent is IMessageStruct {
    /// @notice Throws event after a  message which attempts to omni-chain is submitted to LaunchPad contract
    event SuccessfulLaunchMessage(
        uint32 indexed nonce,
        uint64 earliestArrivalTimestamp,
        uint64 latestArrivalTimestamp,
        address relayer,
        address sender,
        address srcContract,
        uint256 value,
        uint64 destChainid,
        bytes additionParams,
        bytes message
    );

    /// @notice Throws event after a  message which attempts to omni-chain is submitted to LaunchPad contract
    event SuccessfulLaunchMultiMessages(
        uint32[] indexed nonce,
        uint64 earliestArrivalTimestamp,
        uint64 latestArrivalTimestamp,
        address relayer,
        address sender,
        address srcContract,
        uint256[] value,
        uint64[] destChainid,
        bytes[] additionParams,
        bytes[] message
    );

    /// @notice Throws event after a omni-chain message is submitted from source chain to target chain
    event SuccessfulLanding(bytes32 indexed messageId, landingParams params);

    /// @notice Throws event after protocol state is changed, such as pause or resume
    event EngineStateRefreshing(bool indexed isPause);

    /// @notice Throws event after protocol fee calculation is changed
    event PaymentSystemChanging(address indexed gasSystemAddress);

    /// @notice Throws event after successful withdrawa
    event WithdrawRequest(address indexed to, uint256 amount);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

interface IMessageReceiver {
    function receiveStandardMessage(
        uint64 srcChainId,
        uint256 srcContract,
        bytes calldata message
    ) external payable;

    function receiveExtraMessage(
        bytes32 messageId,
        uint64 srcChainId,
        uint256 srcContract,
        bytes calldata message
    ) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

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

interface IMessageSimulation is IMessageStruct {
    /// @dev for sequencer to simulate the landing message, call this function before call Landing
    /// @param params the landing message params
    /// check the revert message "SimulateResult" to get the result of the simulation
    /// for example, if the result is [true, false, true], it means the first and third message is valid, the second message is invalid
    function SimulateLanding(landingParams[] calldata params) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

import {IMessageStruct} from "./IMessageStruct.sol";
import {IMessageDashboard} from "./IMessageDashboard.sol";
import {IMessageEvent} from "../interface/IMessageEvent.sol";
import {IMessageChannel} from "../interface/IMessageChannel.sol";
import {IMessageSimulation} from "../interface/IMessageSimulation.sol";

interface IMessageSpaceStation is
    IMessageStruct,
    IMessageDashboard,
    IMessageEvent,
    IMessageChannel,
    IMessageSimulation
{}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

interface IMessageStruct {
    struct launchParams {
        uint64 earliestArrivalTimestamp;
        uint64 latestArrivalTimestamp;
        address relayer;
        address sender;
        uint256 value;
        uint64 destChainid;
        bytes additionParams;
        bytes message;
    }

    struct landingParams {
        bytes32 messageId;
        uint64 earliestArrivalTimestamp;
        uint64 latestArrivalTimestamp;
        uint64 srcChainid;
        bytes32 srcTxHash;
        uint256 srcContract;
        uint32 srcChainNonce;
        uint256 sender;
        uint256 value;
        bytes additionParams;
        bytes message;
    }

    struct launchEnhanceParams {
        uint64 earliestArrivalTimestamp;
        uint64 latestArrivalTimestamp;
        address relayer;
        address sender;
        uint256[] value;
        uint64[] destChainid;
        bytes[] additionParams;
        bytes[] message;
    }

    struct RollupMessageStruct {
        SignedMessageBase base;
        IMessageStruct.launchParams params;
    }

    struct SignedMessageBase {
        uint64 srcChainId;
        uint24 nonceLaunch;
        bytes32 srcTxHash;
        bytes32 destTxHash;
        uint64 srcTxTimestamp;
        uint64 destTxTimestamp;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

interface IVizingGasSystemChannel {
    /*
        /// @notice Estimate how many native token we should spend to exchange the amountOut in the destChainid
        /// @param destChainid The chain id of the destination chain
        /// @param amountOut The value we want to receive in the destination chain
        /// @return amountIn the native token amount on the source chain we should spend
    */
    function exactOutput(
        uint64 destChainid,
        uint256 amountOut
    ) external view returns (uint256 amountIn);

    /*
        /// @notice Estimate how many native token we could get in the destChainid if we input the amountIn
        /// @param destChainid The chain id of the destination chain
        /// @param amountIn The value we spent in the source chain
        /// @return amountOut the native token amount the destination chain will receive
    */
    function exactInput(
        uint64 destChainid,
        uint256 amountIn
    ) external view returns (uint256 amountOut);

    /*
        /// @notice Estimate the gas fee we should pay to vizing
        /// @param destChainid The chain id of the destination chain
        /// @param message The message we want to send to the destination chain
    */
    function estimateGas(
        uint256 amountOut,
        uint64 destChainid,
        bytes calldata message
    ) external view returns (uint256);

    /*
        /// @notice Estimate the gas fee & native token we should pay to vizing
        /// @param amountOut amountOut in the destination chain
        /// @param destChainid The chain id of the destination chain
        /// @param message The message we want to send to the destination chain
    */
    function batchEstimateTotalFee(
        uint256[] calldata amountOut,
        uint64[] calldata destChainid,
        bytes[] calldata message
    ) external view returns (uint256 totalFee);

    /*
        /// @notice Estimate the total fee we should pay to vizing
        /// @param value The value we spent in the source chain
        /// @param destChainid The chain id of the destination chain
        /// @param message The message we want to send to the destination chain
    */
    function estimateTotalFee(
        uint256 value,
        uint64 destChainid,
        bytes calldata message
    ) external view returns (uint256 totalFee);

    /*
        /// @notice Estimate the gas price we need to encode in message
        /// @param sender most likely the address of the DApp, which forward the message from user
        /// @param destChainid The chain id of the destination chain
    */
    function estimatePrice(
        address targetContract,
        uint64 destChainid
    ) external view returns (uint64);

    /*
        /// @notice Estimate the gas price we need to encode in message
        /// @param destChainid The chain id of the destination chain
    */
    function estimatePrice(uint64 destChainid) external view returns (uint64);

    /*
        /// @notice Calculate the fee for the native token transfer
        /// @param amount The value we spent in the source chain
    */
    function computeTradeFee(
        uint64 destChainid,
        uint256 amountOut
    ) external view returns (uint256 fee);

    /*
        /// @notice Calculate the fee for the native token transfer
        /// @param amount The value we spent in the source chain
    */
    function computeTradeFee(
        address targetContract,
        uint64 destChainid,
        uint256 amountOut
    ) external view returns (uint256 fee);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

library MessageTypeLib {
    bytes1 constant DEFAULT = 0x00;

    /* ********************* message type **********************/
    bytes1 constant STANDARD_ACTIVATE = 0x01;
    bytes1 constant ARBITRARY_ACTIVATE = 0x02;
    bytes1 constant MESSAGE_POST = 0x03;
    bytes1 constant NATIVE_TOKEN_SEND = 0x04;

    /**
     * additionParams type *********************
     */
    // Single-Send mode
    bytes1 constant SINGLE_SEND = 0x01;
    bytes1 constant MULTI_UNIVERSAL = 0x03;
    bytes1 constant ERC20_HANDLER = 0x04;

    bytes1 constant MAX_MODE = 0xFF;

    function fetchMsgMode(
        bytes calldata message
    ) internal pure returns (bytes1) {
        if (message.length < 1) {
            return DEFAULT;
        }
        bytes1 messageSlice = bytes1(message[0:1]);
        return messageSlice;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

import {IMessageStruct} from "./interface/IMessageStruct.sol";
import {IMessageChannel} from "./interface/IMessageChannel.sol";
import {IMessageEmitter} from "./interface/IMessageEmitter.sol";
import {IMessageReceiver} from "./interface/IMessageReceiver.sol";
import {IVizingGasSystemChannel} from "./interface/IVizingGasSystemChannel.sol";

abstract contract MessageEmitterUpgradeable is IMessageEmitter {
    /// @dev bellow are the default parameters for the OmniToken,
    ///      we **Highly recommended** to use immutable variables to store these parameters
    /// @notice minArrivalTime the minimal arrival timestamp for the omni-chain message
    /// @notice maxArrivalTime the maximal arrival timestamp for the omni-chain message
    /// @notice minGasLimit the minimal gas limit for target chain execute omni-chain message
    /// @notice maxGasLimit the maximal gas limit for target chain execute omni-chain message
    /// @notice defaultBridgeMode the default mode for the omni-chain message,
    ///        in OmniToken, we use MessageTypeLib.ARBITRARY_ACTIVATE (0x02), target chain will **ACTIVATE** the message
    /// @notice selectedRelayer the specify relayer for your message
    ///        set to 0, all the relayers will be able to forward the message
    /// see https://docs.vizing.com/docs/BuildOnVizing/Contract

    function minArrivalTime() external view virtual override returns (uint64) {}

    function maxArrivalTime() external view virtual override returns (uint64) {}

    function minGasLimit() external view virtual override returns (uint24) {}

    function maxGasLimit() external view virtual override returns (uint24) {}

    function defaultBridgeMode()
        external
        view
        virtual
        override
        returns (bytes1)
    {}

    function selectedRelayer()
        external
        view
        virtual
        override
        returns (address)
    {}

    IMessageChannel public LaunchPad;

    /*
        /// rewrite set LaunchPad address function
        /// @notice call this function to reset the LaunchPad contract address
        /// @param _LaunchPad The new LaunchPad contract address
    */
    function __LaunchPadInit(address _LaunchPad) internal virtual {
        LaunchPad = IMessageChannel(_LaunchPad);
    }

    /*
        /// @notice call this function to packet the message before sending it to the LandingPad contract
        /// @param mode the emitter mode, check MessageTypeLib.sol for more details
        ///        eg: 0x02 for ARBITRARY_ACTIVATE, your message will be activated on the target chain
        /// @param gasLimit the gas limit for executing the specific function on the target contract
        /// @param targetContract the target contract address on the destination chain
        /// @param message the message to be sent to the target contract
        /// @return the packed message
        /// see https://docs.vizing.com/docs/BuildOnVizing/Contract
    */
    function _packetMessage(
        bytes1 mode,
        address targetContract,
        uint24 gasLimit,
        uint64 price,
        bytes memory message
    ) internal pure returns (bytes memory) {
        return
            abi.encodePacked(
                mode,
                uint256(uint160(targetContract)),
                gasLimit,
                price,
                message
            );
    }

    /*
        /// @notice Calculate the amount of native tokens obtained on the target chain
        /// @param value The value we send to vizing on the source chain
    */
    function _computeTradeFee(
        uint64 destChainid,
        uint256 value
    ) internal view returns (uint256 amountIn) {
        return
            IVizingGasSystemChannel(LaunchPad.gasSystemAddr()).computeTradeFee(
                destChainid,
                value
            );
    }

    /*
        /// @notice Fetch the nonce of the user with specific destination chain
        /// @param destChainid The chain id of the destination chain
        /// see https://docs.vizing.com/docs/BuildOnVizing/Contract
    */
    function _fetchNonce(
        uint64 destChainid
    ) internal view virtual returns (uint32 nonce) {
        nonce = LaunchPad.GetNonceLaunch(destChainid, msg.sender);
    }

    /*
        /// @notice Estimate the gas price we need to encode in message
        /// @param destChainid The chain id of the destination chain
        /// see https://docs.vizing.com/docs/BuildOnVizing/Contract
    */
    function _fetchPrice(
        uint64 destChainid
    ) internal view virtual returns (uint64) {
        return
            IVizingGasSystemChannel(LaunchPad.gasSystemAddr()).estimatePrice(
                destChainid
            );
    }

    /*
        /// @notice Estimate the gas price we need to encode in message
        /// @param targetContract The target contract address on the destination chain
        /// @param destChainid The chain id of the destination chain
        /// see https://docs.vizing.com/docs/BuildOnVizing/Contract
    */
    function _fetchPrice(
        address targetContract,
        uint64 destChainid
    ) internal view virtual returns (uint64) {
        return
            IVizingGasSystemChannel(LaunchPad.gasSystemAddr()).estimatePrice(
                targetContract,
                destChainid
            );
    }

    /*
        /// @notice similar to uniswap Swap Router
        /// @notice Estimate how many native token we should spend to exchange the amountOut in the destChainid
        /// @param destChainid The chain id of the destination chain
        /// @param amountOut The value we want to exchange in the destination chain
        /// @return amountIn the native token amount on the source chain we should spend
        /// see https://docs.vizing.com/docs/BuildOnVizing/Contract
    */
    function _exactOutput(
        uint64 destChainid,
        uint256 amountOut
    ) internal view returns (uint256 amountIn) {
        return
            IVizingGasSystemChannel(LaunchPad.gasSystemAddr()).exactOutput(
                destChainid,
                amountOut
            );
    }

    /*
        /// @notice similar to uniswap Swap Router
        /// @notice Estimate how many native token we could get in the destChainid if we input the amountIn
        /// @param destChainid The chain id of the destination chain
        /// @param amountIn The value we spent in the source chain
        /// @return amountOut the native token amount the destination chain will receive
        /// see https://docs.vizing.com/docs/BuildOnVizing/Contract
    */
    function _exactInput(
        uint64 destChainid,
        uint256 amountIn
    ) internal view returns (uint256 amountOut) {
        return
            IVizingGasSystemChannel(LaunchPad.gasSystemAddr()).exactInput(
                destChainid,
                amountIn
            );
    }

    /*
        /// @notice Estimate the gas price we need to encode in message
        /// @param value The native token that value target address will receive in the destination chain
        /// @param destChainid The chain id of the destination chain
        /// @param additionParams The addition params for the message
        ///        if not in expert mode, set to 0 (`new bytes(0)`)
        /// @param message The message we want to send to the destination chain
        /// see https://docs.vizing.com/docs/BuildOnVizing/Contract
    */
    function _estimateVizingGasFee(
        uint256 value,
        uint64 destChainid,
        bytes memory additionParams,
        bytes memory message
    ) internal view returns (uint256 vizingGasFee) {
        return
            LaunchPad.estimateGas(value, destChainid, additionParams, message);
    }

    /*  
        /// @notice **Highly recommend** to call this function in your frontend program
        /// @notice Estimate the gas price we need to encode in message
        /// @param value The native token that value target address will receive in the destination chain
        /// @param destChainid The chain id of the destination chain
        /// @param additionParams The addition params for the message
        ///        if not in expert mode, set to 0 (`new bytes(0)`)
        /// @param message The message we want to send to the destination chain
        /// see https://docs.vizing.com/docs/BuildOnVizing/Contract
    */
    function estimateVizingGasFee(
        uint256 value,
        uint64 destChainid,
        bytes calldata additionParams,
        bytes calldata message
    ) external view returns (uint256 vizingGasFee) {
        return
            _estimateVizingGasFee(value, destChainid, additionParams, message);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;
import {MessageEmitterUpgradeable} from "./MessageEmitter-upgradeable.sol";
abstract contract MessageEmitter is MessageEmitterUpgradeable {
    constructor(address _LaunchPad) {
        __LaunchPadInit(_LaunchPad);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

import {IMessageChannel} from "./interface/IMessageChannel.sol";
import {IMessageReceiver} from "./interface/IMessageReceiver.sol";

abstract contract MessageReceiverUpgradeable is IMessageReceiver {
    error LandingPadAccessDenied();
    error NotImplement();
    IMessageChannel public LandingPad;

    modifier onlyVizingPad() {
        if (msg.sender != address(LandingPad)) revert LandingPadAccessDenied();
        _;
    }

    /*
        /// rewrite set LandingPad address function
        /// @notice call this function to reset the LaunchPad contract address
        /// @param _LaunchPad The new LaunchPad contract address
    */
    function __LandingPadInit(address _LandingPad) internal virtual {
        LandingPad = IMessageChannel(_LandingPad);
    }

    /// @notice the standard function to receive the omni-chain message
    function receiveStandardMessage(
        uint64 srcChainId,
        uint256 srcContract,
        bytes calldata message
    ) external payable virtual override onlyVizingPad {
        _receiveMessage(srcChainId, srcContract, message);
    }

    function receiveExtraMessage(
        bytes32 messageId,
        uint64 srcChainId,
        uint256 srcContract,
        bytes calldata message
    ) external payable virtual override onlyVizingPad {
        _receiveMessage(messageId, srcChainId, srcContract, message);
    }

    /// @dev override this function to handle the omni-chain message
    /// @param srcChainId the source chain id
    /// @param srcContract the source contract address
    /// @param message the message from the source chain
    function _receiveMessage(
        uint64 srcChainId,
        uint256 srcContract,
        bytes calldata message
    ) internal virtual {
        (srcChainId, srcContract, message);
        revert NotImplement();
    }

    /// @dev override this function to handle the omni-chain message
    /// @param srcChainId the source chain id
    /// @param srcContract the source contract address
    /// @param message the message from the source chain
    function _receiveMessage(
        bytes32 messageId,
        uint64 srcChainId,
        uint256 srcContract,
        bytes calldata message
    ) internal virtual {
        (messageId, srcChainId, srcContract, message);
        revert NotImplement();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

import {MessageReceiverUpgradeable} from "./MessageReceiver-upgradeable.sol";

abstract contract MessageReceiver is MessageReceiverUpgradeable {
    constructor(address _LandingPad) {
        __LandingPadInit(_LandingPad);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

import {MessageEmitter} from "./MessageEmitter.sol";
import {MessageReceiver} from "./MessageReceiver.sol";

abstract contract VizingOmni is MessageEmitter, MessageReceiver {
    constructor(
        address _vizingPad
    ) MessageEmitter(_vizingPad) MessageReceiver(_vizingPad) {}
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

enum ActionType {
    buyPing,
    buyPong,
    sellPing,
    sellPong,
    crossPing,
    stakePing,
    unStakePing,
    unStakePong
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

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

interface IChannelSlave is IChannelSlaveBase {
    function paramsEstimateGas(uint value, bytes memory params) external view returns (uint);

    function paramsEmit2LaunchPad(uint bridgeFee, uint value, bytes memory params, address sender) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface IChannelSlaveBase {
    function getHash(
        string memory biz,
        string memory symbol,
        uint amount,
        address sender
    ) external pure returns (bytes32);

    function buyPingEstimateGas(
        uint pongFee,
        string memory _symbol,
        address target,
        uint amountIn,
        uint amountOutMinimum,
        uint nonce
    ) external view returns (uint pingFee);

    function buyPing(
        uint pingFee,
        uint pongFee,
        address sender,
        string memory _symbol,
        address target,
        uint amountInETH,
        uint amountOutMinimum,
        uint nonce
    ) external payable;

    function sellPingEstimateGas(
        uint pongFee,
        string memory _symbol,
        address target,
        uint amountIn,
        uint amountOutMinimum,
        uint nonce
    ) external view returns (uint pingFee);

    function sellPing(
        uint pingFee,
        uint pongFee,
        address sender,
        string memory _symbol,
        address target,
        uint amountIn,
        uint amountOutMinimum,
        uint nonce
    ) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

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

interface IFactoryBase {
    function getChannelAddress() external view returns (address);

    function getProduct(string memory symbol_) external view returns (IProductBase);

    function getSymbol(address _addr) external view returns (string memory);

    function existProduct(address _addr) external view returns (bool);

    function getShortByLong(address longAddr) external view returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface IProductBase {
    function actionCall(
        bytes32 messageId,
        uint64 srcChainId,
        address sender,
        uint8 action,
        uint pongFee,
        bytes memory params
    ) external payable;

    function getFactoryAddress() external view returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

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

interface IProductInfo is IProductBase {
    function symbol() external view returns (string memory);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {IProductInfo} from "../interface/IProductInfo.sol";
import {IFactoryBase} from "../interface/IFactoryBase.sol";

contract ChannelBase is Ownable {
    mapping(address => bool) public factories;
    mapping(string => address) public products;

    function setFactory(address addr) public onlyOwner {
        factories[addr] = true;
    }

    function removeFactory(address addr) public onlyOwner {
        delete factories[addr];
    }

    function addProduct(string memory _symbol, address addr) public onlyFactory {
        products[_symbol] = addr;
    }

    modifier onlyFactory() {
        require(factories[_msgSender()] || owner() == _msgSender(), "LikwidChannel: onlyFactory");
        _;
    }

    modifier onlyProduct() {
        IProductInfo product = IProductInfo(_msgSender());
        require(factories[product.getFactoryAddress()], "LikwidChannel: factory error");
        IFactoryBase _factory = IFactoryBase(product.getFactoryAddress());
        require(_factory.existProduct(_msgSender()), "LikwidChannel: caller must be product");
        require(products[product.symbol()] == _msgSender(), "LikwidChannel: error caller");
        _;
    }

    function getProduct(string memory symbol_) public view returns (IProductInfo product) {
        require(products[symbol_] != address(0), "product err");
        product = IProductInfo(products[symbol_]);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {VizingOmni} from "@vizing/contracts/VizingOmni.sol";
import {MessageTypeLib} from "@vizing/contracts/library/MessageTypeLib.sol";
import {ActionType} from "../constants/ActionType.sol";
import {ChannelBase} from "./ChannelBase.sol";

import {IFactoryBase} from "../interface/IFactoryBase.sol";
import {IProductInfo} from "../interface/IProductInfo.sol";
import {IChannelSlave} from "../interface/IChannelSlave.sol";

abstract contract LikwidSlaveChannel is ChannelBase, VizingOmni, IChannelSlave {
    event MessageReceived(uint64 _srcChainId, address _srcAddress, uint value, bytes _payload, bytes32 messageId);
    event MessageFailed(uint64 _srcChainId, address _srcAddress, bytes _payload, bytes _reason, uint _value);
    uint64 public immutable override minArrivalTime;
    uint64 public immutable override maxArrivalTime;
    uint24 public immutable override minGasLimit;
    uint24 public immutable override maxGasLimit;
    bytes1 public immutable override defaultBridgeMode;
    address public immutable override selectedRelayer;

    uint public messageFailed;
    uint public messageReceived;

    uint64 masterChainId;
    address masterContract;

    constructor(uint64 _masterChainId, address _masterAddress, address _vizingPad) VizingOmni(_vizingPad) {
        require(_masterChainId != 0, "In contract deployment ...");
        require(_masterAddress != address(0), "In contract deployment ...");
        masterChainId = _masterChainId;
        masterContract = _masterAddress;
        defaultBridgeMode = MessageTypeLib.STANDARD_ACTIVATE;
    }

    //----vizing bridge common----
    function paramsEstimateGas(uint value, bytes memory params) public view virtual returns (uint) {
        bytes memory message = _packetMessage(
            defaultBridgeMode,
            masterContract,
            maxGasLimit,
            _fetchPrice(masterContract, masterChainId),
            abi.encode(address(0), params)
        );
        return LaunchPad.estimateGas(value, masterChainId, new bytes(0), message);
    }

    function _paramsEmit2LaunchPad(uint bridgeFee, uint value, bytes memory params, address sender) internal {
        bytes memory message = _packetMessage(
            defaultBridgeMode,
            masterContract,
            maxGasLimit,
            _fetchPrice(masterContract, masterChainId),
            abi.encode(sender, params)
        );

        uint bridgeValue = value + bridgeFee;
        require(msg.value >= bridgeValue, "bridgeFee err.");
        LaunchPad.Launch{value: bridgeValue}(
            0,
            0,
            selectedRelayer,
            sender,
            value,
            masterChainId,
            new bytes(0),
            message
        );
    }

    function paramsEmit2LaunchPad(
        uint bridgeFee,
        uint value,
        bytes memory params,
        address sender
    ) external payable onlyProduct {
        _paramsEmit2LaunchPad(bridgeFee, value, params, sender);
    }

    // Signature

    function getHash(
        string memory biz,
        string memory symbol,
        uint amount,
        address sender
    ) public pure returns (bytes32) {
        return keccak256(abi.encodePacked(biz, symbol, amount, sender));
    }

    function _buyPingSignature(
        uint pongFee,
        string memory _symbol,
        address target,
        uint amountIn,
        uint amountOutMinimum,
        uint nonce
    ) internal view virtual returns (bytes memory) {
        return
            abi.encode(
                uint8(ActionType.buyPing),
                _symbol,
                pongFee,
                abi.encode(nonce, target, amountIn, amountOutMinimum)
            );
    }

    function buyPingEstimateGas(
        uint pongFee,
        string memory _symbol,
        address target,
        uint amountIn,
        uint amountOutMinimum,
        uint nonce
    ) public view virtual returns (uint pingFee) {
        pingFee = paramsEstimateGas(
            pongFee,
            _buyPingSignature(pongFee, _symbol, target, amountIn, amountOutMinimum, nonce)
        );
    }

    function buyPing(
        uint pingFee,
        uint pongFee,
        address sender,
        string memory _symbol,
        address target,
        uint amountIn,
        uint amountOutMinimum,
        uint nonce
    ) external payable virtual onlyProduct {
        bytes memory parmas = _buyPingSignature(pongFee, _symbol, target, amountIn, amountOutMinimum, nonce);
        _paramsEmit2LaunchPad(pingFee, amountIn + pongFee, parmas, sender);
    }

    function _sellPingSignature(
        uint pongFee,
        string memory _symbol,
        address target,
        uint amountIn,
        uint amountOutMinimum,
        uint nonce
    ) internal view virtual returns (bytes memory) {
        return
            abi.encode(
                uint8(ActionType.sellPing),
                _symbol,
                pongFee,
                abi.encode(nonce, target, amountIn, amountOutMinimum)
            );
    }

    function sellPingEstimateGas(
        uint pongFee,
        string memory _symbol,
        address target,
        uint amountIn,
        uint amountOutMinimum,
        uint nonce
    ) public view virtual returns (uint pingFee) {
        pingFee = paramsEstimateGas(
            pongFee,
            _sellPingSignature(pongFee, _symbol, target, amountIn, amountOutMinimum, nonce)
        );
    }

    function sellPing(
        uint pingFee,
        uint pongFee,
        address sender,
        string memory _symbol,
        address target,
        uint amountIn,
        uint amountOutMinimum,
        uint nonce
    ) external payable virtual onlyProduct {
        bytes memory params = _sellPingSignature(pongFee, _symbol, target, amountIn, amountOutMinimum, nonce);
        _paramsEmit2LaunchPad(pingFee, pongFee, params, sender);
    }

    function verifySource(uint64 srcChainId, address srcContract) internal view virtual returns (bool authorized) {
        return srcChainId == masterChainId && srcContract == masterContract;
    }

    function _receiveMessage(
        bytes32 messageId,
        uint64 srcChainId,
        uint256 srcContract,
        bytes calldata _payload
    ) internal virtual override {
        require(verifySource(srcChainId, address(uint160(srcContract))), "unauthorized.");
        (address sender, bytes memory message) = abi.decode(_payload, (address, bytes));
        messageReceived += 1;
        emit MessageReceived(srcChainId, sender, msg.value, message, messageId);

        _consumeMessage(srcChainId, sender, messageId, message);
    }

    function _consumeMessage(uint64 srcChainId, address sender, bytes32 messageId, bytes memory message) internal {
        (uint8 action, string memory symbol_, uint pongFee, bytes memory params) = abi.decode(
            message,
            (uint8, string, uint, bytes)
        );
        IProductInfo product = getProduct(symbol_);
        product.actionCall{value: msg.value}(messageId, srcChainId, sender, action, pongFee, params);
    }

    function withdrawFee(address to, uint amount) public onlyOwner {
        transferNative(to, amount);
    }

    function transferNative(address to, uint amount) internal {
        (bool success, ) = to.call{value: amount}("");
        require(success, "Transfer failed.");
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 100
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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0000000000000000000000000000000000000000000000000000000000006f66000000000000000000000000fe91217dbb4e6bf98e3070fa2fd64f839ca3b31d0000000000000000000000005d77b0c9855f44a8fbef34e670e243e988682a82000000000000000000000000ea7744c4fa1101f9e6df5688fc19e3ee94106439

-----Decoded View---------------
Arg [0] : _masterChainId (uint64): 28518
Arg [1] : _masterAddress (address): 0xfE91217Dbb4e6bf98E3070Fa2fD64F839CA3b31D
Arg [2] : _vizingPad (address): 0x5D77b0c9855F44a8fbEf34E670e243E988682a82
Arg [3] : _managerAddress (address): 0xEA7744c4FA1101f9E6dF5688fc19e3EE94106439

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000006f66
Arg [1] : 000000000000000000000000fe91217dbb4e6bf98e3070fa2fd64f839ca3b31d
Arg [2] : 0000000000000000000000005d77b0c9855f44a8fbef34e670e243e988682a82
Arg [3] : 000000000000000000000000ea7744c4fa1101f9e6df5688fc19e3ee94106439