ETH Price: $3,285.88 (+1.22%)
Gas: 5 Gwei

Contract

0x8EA90Ef07f37c77137453C7A1B72B7886d51eCFb
 

Overview

ETH Balance

11.602381128011803938 ETH

Eth Value

$38,124.08 (@ $3,285.88/ETH)

Token Holdings

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Transfer Ownersh...157221802022-10-11 3:28:11655 days ago1665458891IN
0x8EA90Ef0...86d51eCFb
0 ETH0.0007700426.93684482
Set Gaslimits157221362022-10-11 3:19:23655 days ago1665458363IN
0x8EA90Ef0...86d51eCFb
0 ETH0.0006661323.48941387
Set Gaslimits157100942022-10-09 10:58:47657 days ago1665313127IN
0x8EA90Ef0...86d51eCFb
0 ETH0.0008396917.39553336
Set Gaslimits157100902022-10-09 10:57:59657 days ago1665313079IN
0x8EA90Ef0...86d51eCFb
0 ETH0.0008533317.67794867
Set Gaslimits157100852022-10-09 10:56:59657 days ago1665313019IN
0x8EA90Ef0...86d51eCFb
0 ETH0.0007487215.51480032
Set Gaslimits157100792022-10-09 10:55:47657 days ago1665312947IN
0x8EA90Ef0...86d51eCFb
0 ETH0.0008203416.99888858
Set Gaslimits157100762022-10-09 10:55:11657 days ago1665312911IN
0x8EA90Ef0...86d51eCFb
0 ETH0.000773516.02825011
Set Compensation...157100682022-10-09 10:53:35657 days ago1665312815IN
0x8EA90Ef0...86d51eCFb
0 ETH0.0005574618.67606627
Set Create Proxy...157100592022-10-09 10:51:47657 days ago1665312707IN
0x8EA90Ef0...86d51eCFb
0 ETH0.0008570518.30797961
Set Vault157100542022-10-09 10:50:47657 days ago1665312647IN
0x8EA90Ef0...86d51eCFb
0 ETH0.0008922318.856979
Set Receiver157100512022-10-09 10:50:11657 days ago1665312611IN
0x8EA90Ef0...86d51eCFb
0 ETH0.0007683516.23115952
0x60a06040157098972022-10-09 10:18:59657 days ago1665310739IN
 Contract Creation
0 ETH0.0684048122.471756

Latest 25 internal transactions (View All)

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202595722024-07-08 5:01:3519 days ago1720414895
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202595722024-07-08 5:01:3519 days ago1720414895
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202595722024-07-08 5:01:3519 days ago1720414895
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0.00078525 ETH
202580612024-07-07 23:57:3519 days ago1720396655
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202580612024-07-07 23:57:3519 days ago1720396655
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202580612024-07-07 23:57:3519 days ago1720396655
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201601812024-06-24 7:53:5933 days ago1719215639
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201601642024-06-24 7:50:3533 days ago1719215435
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195883452024-04-05 8:26:59113 days ago1712305619
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195883452024-04-05 8:26:59113 days ago1712305619
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195883452024-04-05 8:26:59113 days ago1712305619
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194333342024-03-14 12:45:47135 days ago1710420347
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194333342024-03-14 12:45:47135 days ago1710420347
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194333342024-03-14 12:45:47135 days ago1710420347
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192648292024-02-19 22:45:11158 days ago1708382711
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192648292024-02-19 22:45:11158 days ago1708382711
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192648292024-02-19 22:45:11158 days ago1708382711
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192003812024-02-10 21:30:11167 days ago1707600611
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192003812024-02-10 21:30:11167 days ago1707600611
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191457482024-02-03 5:28:11175 days ago1706938091
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190641662024-01-22 18:53:35186 days ago1705949615
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190641662024-01-22 18:53:35186 days ago1705949615
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x95eFeF30...b6CE69027
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
CrossFarmingSender

Compiler Version
v0.8.9+commit.e5eed63a

Optimization Enabled:
Yes with 99999 runs

Other Settings:
default evmVersion
File 1 of 14 : CrossFarmingSender.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "sgn-v2-contracts/contracts/message/framework/MessageReceiverApp.sol";
import "sgn-v2-contracts/contracts/message/interfaces/IMessageBus.sol";
import {AggregatorV3Interface} from "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";
import "./libraries/DataTypes.sol";
import "./interfaces/IVault.sol";

/// @title A cross chain sender contract for send message to receiver contract on BSC chain.
// It's for users from other EVM chain can participate Pancakeswap MCV2 farm pool CAKE reward in BSC chain.
contract CrossFarmingSender is MessageReceiverApp {
    using SafeERC20 for IERC20;

    // oracle data feeds
    enum Feeds {
        BNBUSD,
        ETHUSD
    }

    enum Chains {
        EVM,
        BSC
    }

    // cross farming vault contract on EVM chain.
    // Only Vault contract can send farming message to receiver contract.
    address public Vault;
    // cross farming receiver contract on BSC chain.
    address public CROSS_FARMING_RECEIVER;

    // create proxy contract on dest chain(BSC) gas limit.
    uint256 public createProxyGasLimit;
    // gas fee = gaslimit * gasprice, different EVM chain transaction have different average gas price
    // compensation rate in the range [0.1,10], for converting gas fee from dest chain to source chain.
    // for example, source chain gas price is 1/2 dest chain gas price, so the user paid for dest chain transaction
    // fee in sourcechain should base on 2x gas fee in source chain.
    uint256 public compensationRate;
    // Gas fee compensation rate precision.(100%)
    uint256 public constant COMPENSATION_PRECISION = 1e5;
    // Max compensation rate(1000%)
    uint256 public constant MAX_COMPENSATION_RATE = 10e5;
    // Minimize compensation rate(10%)
    uint256 public constant MIN_COMPENSATION_RATE = 1e4;
    // Small BNB change for the new user in BSC chain.
    uint256 public BNB_CHANGE = 0.005 ether;
    // ETH/BNB price exchange rate precison
    uint256 public constant EXCHANGE_RATE_PRECISION = 1e12;
    // BSC chain ID (Dest chainId)
    uint64 public immutable BSC_CHAIN_ID;

    // oracle data feeds
    mapping(Feeds => AggregatorV3Interface) public oracle;
    // oracle data feeds update time buffer
    mapping(Feeds => uint256) public oracleUpdateBuffer;
    // user pool nonce info(account => (pid => nonce))
    mapping(address => mapping(uint256 => uint64)) public nonces;
    // whether user send 1st cross-chain tx.
    mapping(address => bool) public is1st;
    // different message(operation) type have different estimate gas limit on EVM chain.
    mapping(Chains => mapping(DataTypes.MessageTypes => uint256)) public gaslimits;

    event NewOracle(address oracle);
    event VaultUpdated(address vault);
    event ReceiverUpdated(address receiver);
    event BnbChangeUpdated(uint256 amount);
    event CompensationRateUpdated(uint256 rate);
    event FeeClaimed(uint256 amount, bool success);
    event CreateProxyGasLimitUpdated(uint256 gaslimit);
    event OracleBufferUpdated(Feeds feed, uint256 oracleUpdateBuffer);
    event GasLimitUpdated(Chains chain, DataTypes.MessageTypes msgtype, uint256 gaslimit);
    event FarmingMessageReceived(
        address sender,
        uint64 srcChainId,
        uint64 nonce,
        DataTypes.MessageTypes msgType,
        address acount,
        uint256 pid,
        uint256 amount
    );

    constructor(
        address _messageBus,
        address _oracle_bnb,
        address _oracle_eth,
        uint256 _oracle_bnb_update_buffer,
        uint256 _oracle_eth_update_buffer,
        uint64 _chainId
    ) {
        // Dummy check oracle
        AggregatorV3Interface(_oracle_bnb).latestRoundData();
        AggregatorV3Interface(_oracle_eth).latestRoundData();

        messageBus = _messageBus;

        oracle[Feeds.BNBUSD] = AggregatorV3Interface(_oracle_bnb);
        oracle[Feeds.ETHUSD] = AggregatorV3Interface(_oracle_eth);

        oracleUpdateBuffer[Feeds.BNBUSD] = _oracle_bnb_update_buffer;
        oracleUpdateBuffer[Feeds.ETHUSD] = _oracle_eth_update_buffer;
        // initially, compensation rate is 100%
        compensationRate = COMPENSATION_PRECISION;
        BSC_CHAIN_ID = _chainId;
    }

    modifier onlyVault() {
        require(msg.sender == Vault, "Only vault contract");
        _;
    }

    /**
     * @notice Only called by Vault contract.
     * @param _message Encoded CrossFarmingRequest message bytes.
     */
    function sendFarmMessage(bytes calldata _message) external payable onlyVault {
        // decode the message
        DataTypes.CrossFarmRequest memory request = abi.decode((_message), (DataTypes.CrossFarmRequest));

        // ETH/USD price
        int256 ethPrice = _getPriceFromOracle(Feeds.ETHUSD);
        // BNB/USD price
        int256 bnbPrice = _getPriceFromOracle(Feeds.BNBUSD);

        require(bnbPrice > 0 && ethPrice > 0, "Abnormal prices");

        uint256 exchangeRate = (uint256(bnbPrice) * EXCHANGE_RATE_PRECISION) / uint256(ethPrice);
        // msgbus fee price by native token
        uint256 msgBusFee = IMessageBus(messageBus).calcFee(_message);

        uint256 totalFee = msgBusFee +
            // destTxFee
            (tx.gasprice *
                estimateGaslimit(Chains.BSC, request.account, request.msgType) *
                exchangeRate *
                compensationRate) /
            (EXCHANGE_RATE_PRECISION * COMPENSATION_PRECISION);

        // BNB change fee for new BNB user
        if (!is1st[request.account]) {
            totalFee += (BNB_CHANGE * exchangeRate) / EXCHANGE_RATE_PRECISION;
            is1st[request.account] = true;
        }

        if (request.msgType >= DataTypes.MessageTypes.Withdraw) {
            totalFee += (// executor call fee(Ack call on this contract 'executeMessage' interface)
            tx.gasprice *
                estimateGaslimit(Chains.EVM, request.account, request.msgType) +
                // withdraw ack msg messageBus fee on BSC chain
                ((msgBusFee * exchangeRate) / EXCHANGE_RATE_PRECISION));
        }

        require(msg.value >= totalFee, "Insufficient fee");

        IMessageBus(messageBus).sendMessage{value: msgBusFee}(request.receiver, request.dstChainId, _message);

        // increase nonce
        ++nonces[request.account][request.pid];

        if (msg.value > totalFee) {
            //send back to the user
            payable(request.account).transfer(msg.value - totalFee);
        }
    }

    /**
     * @notice Only called by MessageBus
     * @param _sender The address of the source app contract
     * @param _srcChainId The source chain ID where the transfer is originated from
     * @param _message Encoded CrossFarmingRequest message bytes.
     */
    function executeMessage(
        address _sender,
        uint64 _srcChainId,
        bytes calldata _message,
        address // executor who called the MessageBus execution function
    ) external payable override onlyMessageBus returns (ExecutionStatus) {
        require(_srcChainId == BSC_CHAIN_ID && _sender == CROSS_FARMING_RECEIVER, "Invalid receiver contract");
        // decode the message
        DataTypes.CrossFarmRequest memory request = abi.decode((_message), (DataTypes.CrossFarmRequest));

        if (request.msgType == DataTypes.MessageTypes.Withdraw) {
            IVault(Vault).ackWithdraw(request.account, request.pid, request.amount, request.nonce);
        } else if (request.msgType == DataTypes.MessageTypes.EmergencyWithdraw) {
            IVault(Vault).ackEmergencyWithdraw(request.account, request.pid, request.nonce);
        }

        emit FarmingMessageReceived(
            _sender,
            _srcChainId,
            request.nonce,
            request.msgType,
            request.account,
            request.pid,
            request.amount
        );

        return ExecutionStatus.Success;
    }

    /// set cross farming vault contract on source chain.
    /// @notice only be set once.
    function setVault(address _vault) external onlyOwner {
        require(_vault != address(0), "Vault contract can't be zero address");
        require(Vault == address(0), "Already set vault contract");
        Vault = _vault;

        emit VaultUpdated(Vault);
    }

    /// set cross farming receiver contract on dest chain(BSC chain).
    /// @notice only be set once.
    function setReceiver(address _receiver) external onlyOwner {
        require(_receiver != address(0), "Receiver contract can't be zero address");
        require(CROSS_FARMING_RECEIVER == address(0), "Already set receiver contract");
        CROSS_FARMING_RECEIVER = _receiver;

        emit ReceiverUpdated(_receiver);
    }

    /// set oracle data feeds.
    function setOracle(Feeds _feed, address _oracle) external onlyOwner {
        require(_oracle != address(0), "Oracle feed can't be zero address");
        oracle[_feed] = AggregatorV3Interface(_oracle);

        // Dummy check to make sure the interface implements this function properly
        oracle[_feed].latestRoundData();

        emit NewOracle(_oracle);
    }

    /// set oracle update buffer, different oracle feeds have different update frequency,
    /// so the buffer should also change accordingly
    function setOracleUpdateBuffer(Feeds _feed, uint256 _oracleUpdateBuffer) external onlyOwner {
        require(_oracleUpdateBuffer > 0, "oracle update time buffer should > 0");
        oracleUpdateBuffer[_feed] = _oracleUpdateBuffer;
        emit OracleBufferUpdated(_feed, _oracleUpdateBuffer);
    }

    /// set gas cost for specific operation in different chain.
    function setGaslimits(
        Chains _chain,
        DataTypes.MessageTypes _type,
        uint256 _gaslimit
    ) external onlyOwner {
        require(_gaslimit > 0, "Gaslimit should be > zero");
        gaslimits[_chain][_type] = _gaslimit;
        emit GasLimitUpdated(_chain, _type, _gaslimit);
    }

    /// @notice gas price and gas limit is different in differenct EVM chain, compensation rate
    /// is for hedging the risk of this difference caused the executor signer lose gas fee in execution
    function setCompensationRate(uint256 _rate) external onlyOwner {
        require(_rate >= MIN_COMPENSATION_RATE && _rate <= MAX_COMPENSATION_RATE, "Invalid compensation rate");
        compensationRate = _rate;
        emit CompensationRateUpdated(compensationRate);
    }

    /// set BNB change amount for new BSC chain user.
    function setBnbChange(uint256 _change) external onlyOwner {
        require(_change > 0, "BNB change for new user should greater than zero");
        BNB_CHANGE = _change;
        emit BnbChangeUpdated(_change);
    }

    /// create farming-proxy contract gas limit cost in BSC chain.
    function setCreateProxyGasLimit(uint256 _gaslimit) external onlyOwner {
        createProxyGasLimit = _gaslimit;
        emit CreateProxyGasLimitUpdated(_gaslimit);
    }

    /// estimate different operation consume gas limit in BSC chain.
    function estimateGaslimit(
        Chains _chain,
        address _account,
        DataTypes.MessageTypes _msgType
    ) public view returns (uint256 gaslimit) {
        gaslimit = gaslimits[_chain][_msgType];
        // 1st cross-chain tx should add create proxy gaslimit.
        if (!is1st[_account] && _chain == Chains.BSC) gaslimit += createProxyGasLimit;
    }

    /// transfer any ERC20 token of current contract to owner.
    function drainToken(address _token, uint256 _amount) external onlyOwner {
        IERC20(_token).safeTransfer(msg.sender, _amount);
    }

    /// send cross-chain sender contract all gas token to owner
    function claimFee(uint256 _gas) external onlyOwner {
        require(_gas >= 2300, "claimFee gaslimit should exceed 2300 ");

        uint256 amount = address(this).balance;
        (bool success, ) = msg.sender.call{value: amount, gas: _gas}("");

        emit FeeClaimed(amount, success);
    }

    /// @notice Get latest oracle price from chainlink.
    function _getPriceFromOracle(Feeds _feed) internal view returns (int256) {
        (, int256 price, , uint256 timestamp, ) = oracle[_feed].latestRoundData();
        require(timestamp + oracleUpdateBuffer[_feed] >= block.timestamp, "out of date oracle data");
        return price;
    }
}

File 2 of 14 : DataTypes.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

library DataTypes {
    enum MessageTypes {
        Deposit,
        Withdraw,
        EmergencyWithdraw
    }

    struct CrossFarmRequest {
        address receiver;
        uint64 dstChainId;
        uint64 nonce;
        address account;
        uint256 pid;
        uint256 amount;
        MessageTypes msgType;
    }
}

File 3 of 14 : IVault.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

interface IVault {
    function ackWithdraw(
        address _user,
        uint256 _pid,
        uint256 _amount,
        uint64 _nonce
    ) external;

    function ackEmergencyWithdraw(
        address _user,
        uint256 _pid,
        uint64 _nonce
    ) external;
}

File 4 of 14 : SafeERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/draft-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;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    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));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    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");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    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");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

File 5 of 14 : AggregatorV3Interface.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface AggregatorV3Interface {

  function decimals()
    external
    view
    returns (
      uint8
    );

  function description()
    external
    view
    returns (
      string memory
    );

  function version()
    external
    view
    returns (
      uint256
    );

  // getRoundData and latestRoundData should both raise "No data present"
  // if they do not have data to report, instead of returning unset values
  // which could be misinterpreted as actual reported values.
  function getRoundData(
    uint80 _roundId
  )
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );

  function latestRoundData()
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );

}

File 6 of 14 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (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 7 of 14 : IMessageBus.sol
// SPDX-License-Identifier: GPL-3.0-only

pragma solidity >=0.8.0;

import "../libraries/MsgDataTypes.sol";

interface IMessageBus {
    function liquidityBridge() external view returns (address);

    function pegBridge() external view returns (address);

    function pegBridgeV2() external view returns (address);

    function pegVault() external view returns (address);

    function pegVaultV2() external view returns (address);

    /**
     * @notice Calculates the required fee for the message.
     * @param _message Arbitrary message bytes to be decoded by the destination app contract.
     @ @return The required fee.
     */
    function calcFee(bytes calldata _message) external view returns (uint256);

    /**
     * @notice Sends a message to an app on another chain via MessageBus without an associated transfer.
     * A fee is charged in the native gas token.
     * @param _receiver The address of the destination app contract.
     * @param _dstChainId The destination chain ID.
     * @param _message Arbitrary message bytes to be decoded by the destination app contract.
     */
    function sendMessage(
        address _receiver,
        uint256 _dstChainId,
        bytes calldata _message
    ) external payable;

    /**
     * @notice Sends a message associated with a transfer to an app on another chain via MessageBus without an associated transfer.
     * A fee is charged in the native token.
     * @param _receiver The address of the destination app contract.
     * @param _dstChainId The destination chain ID.
     * @param _srcBridge The bridge contract to send the transfer with.
     * @param _srcTransferId The transfer ID.
     * @param _dstChainId The destination chain ID.
     * @param _message Arbitrary message bytes to be decoded by the destination app contract.
     */
    function sendMessageWithTransfer(
        address _receiver,
        uint256 _dstChainId,
        address _srcBridge,
        bytes32 _srcTransferId,
        bytes calldata _message
    ) external payable;

    /**
     * @notice Withdraws message fee in the form of native gas token.
     * @param _account The address receiving the fee.
     * @param _cumulativeFee The cumulative fee credited to the account. Tracked by SGN.
     * @param _sigs The list of signatures sorted by signing addresses in ascending order. A withdrawal must be
     * signed-off by +2/3 of the sigsVerifier's current signing power to be delivered.
     * @param _signers The sorted list of signers.
     * @param _powers The signing powers of the signers.
     */
    function withdrawFee(
        address _account,
        uint256 _cumulativeFee,
        bytes[] calldata _sigs,
        address[] calldata _signers,
        uint256[] calldata _powers
    ) external;

    /**
     * @notice Execute a message with a successful transfer.
     * @param _message Arbitrary message bytes originated from and encoded by the source app contract
     * @param _transfer The transfer info.
     * @param _sigs The list of signatures sorted by signing addresses in ascending order. A relay must be signed-off by
     * +2/3 of the sigsVerifier's current signing power to be delivered.
     * @param _signers The sorted list of signers.
     * @param _powers The signing powers of the signers.
     */
    function executeMessageWithTransfer(
        bytes calldata _message,
        MsgDataTypes.TransferInfo calldata _transfer,
        bytes[] calldata _sigs,
        address[] calldata _signers,
        uint256[] calldata _powers
    ) external payable;

    /**
     * @notice Execute a message with a refunded transfer.
     * @param _message Arbitrary message bytes originated from and encoded by the source app contract
     * @param _transfer The transfer info.
     * @param _sigs The list of signatures sorted by signing addresses in ascending order. A relay must be signed-off by
     * +2/3 of the sigsVerifier's current signing power to be delivered.
     * @param _signers The sorted list of signers.
     * @param _powers The signing powers of the signers.
     */
    function executeMessageWithTransferRefund(
        bytes calldata _message, // the same message associated with the original transfer
        MsgDataTypes.TransferInfo calldata _transfer,
        bytes[] calldata _sigs,
        address[] calldata _signers,
        uint256[] calldata _powers
    ) external payable;

    /**
     * @notice Execute a message not associated with a transfer.
     * @param _message Arbitrary message bytes originated from and encoded by the source app contract
     * @param _sigs The list of signatures sorted by signing addresses in ascending order. A relay must be signed-off by
     * +2/3 of the sigsVerifier's current signing power to be delivered.
     * @param _signers The sorted list of signers.
     * @param _powers The signing powers of the signers.
     */
    function executeMessage(
        bytes calldata _message,
        MsgDataTypes.RouteInfo calldata _route,
        bytes[] calldata _sigs,
        address[] calldata _signers,
        uint256[] calldata _powers
    ) external payable;
}

File 8 of 14 : MessageReceiverApp.sol
// SPDX-License-Identifier: GPL-3.0-only

pragma solidity 0.8.9;

import "../interfaces/IMessageReceiverApp.sol";
import "./MessageBusAddress.sol";

abstract contract MessageReceiverApp is IMessageReceiverApp, MessageBusAddress {
    modifier onlyMessageBus() {
        require(msg.sender == messageBus, "caller is not message bus");
        _;
    }

    /**
     * @notice Called by MessageBus (MessageBusReceiver) if the process is originated from MessageBus (MessageBusSender)'s
     *         sendMessageWithTransfer it is only called when the tokens are checked to be arrived at this contract's address.
     * @param _sender The address of the source app contract
     * @param _token The address of the token that comes out of the bridge
     * @param _amount The amount of tokens received at this contract through the cross-chain bridge.
     *        the contract that implements this contract can safely assume that the tokens will arrive before this
     *        function is called.
     * @param _srcChainId The source chain ID where the transfer is originated from
     * @param _message Arbitrary message bytes originated from and encoded by the source app contract
     * @param _executor Address who called the MessageBus execution function
     */
    function executeMessageWithTransfer(
        address _sender,
        address _token,
        uint256 _amount,
        uint64 _srcChainId,
        bytes calldata _message,
        address _executor
    ) external payable virtual override onlyMessageBus returns (ExecutionStatus) {}

    /**
     * @notice Only called by MessageBus (MessageBusReceiver) if
     *         1. executeMessageWithTransfer reverts, or
     *         2. executeMessageWithTransfer returns ExecutionStatus.Fail
     * @param _sender The address of the source app contract
     * @param _token The address of the token that comes out of the bridge
     * @param _amount The amount of tokens received at this contract through the cross-chain bridge.
     *        the contract that implements this contract can safely assume that the tokens will arrive before this
     *        function is called.
     * @param _srcChainId The source chain ID where the transfer is originated from
     * @param _message Arbitrary message bytes originated from and encoded by the source app contract
     * @param _executor Address who called the MessageBus execution function
     */
    function executeMessageWithTransferFallback(
        address _sender,
        address _token,
        uint256 _amount,
        uint64 _srcChainId,
        bytes calldata _message,
        address _executor
    ) external payable virtual override onlyMessageBus returns (ExecutionStatus) {}

    /**
     * @notice Called by MessageBus (MessageBusReceiver) to process refund of the original transfer from this contract
     * @param _token The token address of the original transfer
     * @param _amount The amount of the original transfer
     * @param _message The same message associated with the original transfer
     * @param _executor Address who called the MessageBus execution function
     */
    function executeMessageWithTransferRefund(
        address _token,
        uint256 _amount,
        bytes calldata _message,
        address _executor
    ) external payable virtual override onlyMessageBus returns (ExecutionStatus) {}

    /**
     * @notice Called by MessageBus (MessageBusReceiver)
     * @param _sender The address of the source app contract
     * @param _srcChainId The source chain ID where the transfer is originated from
     * @param _message Arbitrary message bytes originated from and encoded by the source app contract
     * @param _executor Address who called the MessageBus execution function
     */
    function executeMessage(
        address _sender,
        uint64 _srcChainId,
        bytes calldata _message,
        address _executor
    ) external payable virtual override onlyMessageBus returns (ExecutionStatus) {}
}

File 9 of 14 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (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
     * ====
     *
     * [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://diligence.consensys.net/posts/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/v0.5.11/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 functionCall(target, data, "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");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason 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 {
            // 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 10 of 14 : draft-IERC20Permit.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-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 11 of 14 : MsgDataTypes.sol
// SPDX-License-Identifier: GPL-3.0-only

pragma solidity 0.8.9;

library MsgDataTypes {
    // bridge operation type at the sender side (src chain)
    enum BridgeSendType {
        Null,
        Liquidity,
        PegDeposit,
        PegBurn,
        PegV2Deposit,
        PegV2Burn,
        PegV2BurnFrom
    }

    // bridge operation type at the receiver side (dst chain)
    enum TransferType {
        Null,
        LqRelay, // relay through liquidity bridge
        LqWithdraw, // withdraw from liquidity bridge
        PegMint, // mint through pegged token bridge
        PegWithdraw, // withdraw from original token vault
        PegV2Mint, // mint through pegged token bridge v2
        PegV2Withdraw // withdraw from original token vault v2
    }

    enum MsgType {
        MessageWithTransfer,
        MessageOnly
    }

    enum TxStatus {
        Null,
        Success,
        Fail,
        Fallback,
        Pending // transient state within a transaction
    }

    struct TransferInfo {
        TransferType t;
        address sender;
        address receiver;
        address token;
        uint256 amount;
        uint64 wdseq; // only needed for LqWithdraw (refund)
        uint64 srcChainId;
        bytes32 refId;
        bytes32 srcTxHash; // src chain msg tx hash
    }

    struct RouteInfo {
        address sender;
        address receiver;
        uint64 srcChainId;
        bytes32 srcTxHash; // src chain msg tx hash
    }

    struct MsgWithTransferExecutionParams {
        bytes message;
        TransferInfo transfer;
        bytes[] sigs;
        address[] signers;
        uint256[] powers;
    }

    struct BridgeTransferParams {
        bytes request;
        bytes[] sigs;
        address[] signers;
        uint256[] powers;
    }
}

File 12 of 14 : IMessageReceiverApp.sol
// SPDX-License-Identifier: GPL-3.0-only

pragma solidity >=0.8.0;

interface IMessageReceiverApp {
    enum ExecutionStatus {
        Fail, // execution failed, finalized
        Success, // execution succeeded, finalized
        Retry // execution rejected, can retry later
    }

    /**
     * @notice Called by MessageBus (MessageBusReceiver) if the process is originated from MessageBus (MessageBusSender)'s
     *         sendMessageWithTransfer it is only called when the tokens are checked to be arrived at this contract's address.
     * @param _sender The address of the source app contract
     * @param _token The address of the token that comes out of the bridge
     * @param _amount The amount of tokens received at this contract through the cross-chain bridge.
     *        the contract that implements this contract can safely assume that the tokens will arrive before this
     *        function is called.
     * @param _srcChainId The source chain ID where the transfer is originated from
     * @param _message Arbitrary message bytes originated from and encoded by the source app contract
     * @param _executor Address who called the MessageBus execution function
     */
    function executeMessageWithTransfer(
        address _sender,
        address _token,
        uint256 _amount,
        uint64 _srcChainId,
        bytes calldata _message,
        address _executor
    ) external payable returns (ExecutionStatus);

    /**
     * @notice Only called by MessageBus (MessageBusReceiver) if
     *         1. executeMessageWithTransfer reverts, or
     *         2. executeMessageWithTransfer returns ExecutionStatus.Fail
     * @param _sender The address of the source app contract
     * @param _token The address of the token that comes out of the bridge
     * @param _amount The amount of tokens received at this contract through the cross-chain bridge.
     *        the contract that implements this contract can safely assume that the tokens will arrive before this
     *        function is called.
     * @param _srcChainId The source chain ID where the transfer is originated from
     * @param _message Arbitrary message bytes originated from and encoded by the source app contract
     * @param _executor Address who called the MessageBus execution function
     */
    function executeMessageWithTransferFallback(
        address _sender,
        address _token,
        uint256 _amount,
        uint64 _srcChainId,
        bytes calldata _message,
        address _executor
    ) external payable returns (ExecutionStatus);

    /**
     * @notice Called by MessageBus (MessageBusReceiver) to process refund of the original transfer from this contract
     * @param _token The token address of the original transfer
     * @param _amount The amount of the original transfer
     * @param _message The same message associated with the original transfer
     * @param _executor Address who called the MessageBus execution function
     */
    function executeMessageWithTransferRefund(
        address _token,
        uint256 _amount,
        bytes calldata _message,
        address _executor
    ) external payable returns (ExecutionStatus);

    /**
     * @notice Called by MessageBus (MessageBusReceiver)
     * @param _sender The address of the source app contract
     * @param _srcChainId The source chain ID where the transfer is originated from
     * @param _message Arbitrary message bytes originated from and encoded by the source app contract
     * @param _executor Address who called the MessageBus execution function
     */
    function executeMessage(
        address _sender,
        uint64 _srcChainId,
        bytes calldata _message,
        address _executor
    ) external payable returns (ExecutionStatus);
}

File 13 of 14 : MessageBusAddress.sol
// SPDX-License-Identifier: GPL-3.0-only

pragma solidity 0.8.9;

import "../../safeguard/Ownable.sol";

abstract contract MessageBusAddress is Ownable {
    event MessageBusUpdated(address messageBus);

    address public messageBus;

    function setMessageBus(address _messageBus) public onlyOwner {
        messageBus = _messageBus;
        emit MessageBusUpdated(messageBus);
    }
}

File 14 of 14 : Ownable.sol
// SPDX-License-Identifier: GPL-3.0-only

pragma solidity ^0.8.0;

/**
 * @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.
 *
 * This adds a normal func that setOwner if _owner is address(0). So we can't allow
 * renounceOwnership. So we can support Proxy based upgradable contract
 */
abstract contract Ownable {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _setOwner(msg.sender);
    }

    /**
     * @dev Only to be called by inherit contracts, in their init func called by Proxy
     * we require _owner == address(0), which is only possible when it's a delegateCall
     * because constructor sets _owner in contract state.
     */
    function initOwner() internal {
        require(_owner == address(0), "owner already set");
        _setOwner(msg.sender);
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == msg.sender, "Ownable: caller is not the owner");
        _;
    }

    /**
     * @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");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 99999
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_messageBus","type":"address"},{"internalType":"address","name":"_oracle_bnb","type":"address"},{"internalType":"address","name":"_oracle_eth","type":"address"},{"internalType":"uint256","name":"_oracle_bnb_update_buffer","type":"uint256"},{"internalType":"uint256","name":"_oracle_eth_update_buffer","type":"uint256"},{"internalType":"uint64","name":"_chainId","type":"uint64"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"BnbChangeUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"rate","type":"uint256"}],"name":"CompensationRateUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"gaslimit","type":"uint256"}],"name":"CreateProxyGasLimitUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint64","name":"srcChainId","type":"uint64"},{"indexed":false,"internalType":"uint64","name":"nonce","type":"uint64"},{"indexed":false,"internalType":"enum DataTypes.MessageTypes","name":"msgType","type":"uint8"},{"indexed":false,"internalType":"address","name":"acount","type":"address"},{"indexed":false,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"FarmingMessageReceived","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"bool","name":"success","type":"bool"}],"name":"FeeClaimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"enum CrossFarmingSender.Chains","name":"chain","type":"uint8"},{"indexed":false,"internalType":"enum DataTypes.MessageTypes","name":"msgtype","type":"uint8"},{"indexed":false,"internalType":"uint256","name":"gaslimit","type":"uint256"}],"name":"GasLimitUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"messageBus","type":"address"}],"name":"MessageBusUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oracle","type":"address"}],"name":"NewOracle","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"enum CrossFarmingSender.Feeds","name":"feed","type":"uint8"},{"indexed":false,"internalType":"uint256","name":"oracleUpdateBuffer","type":"uint256"}],"name":"OracleBufferUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"receiver","type":"address"}],"name":"ReceiverUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"vault","type":"address"}],"name":"VaultUpdated","type":"event"},{"inputs":[],"name":"BNB_CHANGE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"BSC_CHAIN_ID","outputs":[{"internalType":"uint64","name":"","type":"uint64"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"COMPENSATION_PRECISION","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"CROSS_FARMING_RECEIVER","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"EXCHANGE_RATE_PRECISION","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_COMPENSATION_RATE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MIN_COMPENSATION_RATE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"Vault","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_gas","type":"uint256"}],"name":"claimFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"compensationRate","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"createProxyGasLimit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"drainToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"enum CrossFarmingSender.Chains","name":"_chain","type":"uint8"},{"internalType":"address","name":"_account","type":"address"},{"internalType":"enum DataTypes.MessageTypes","name":"_msgType","type":"uint8"}],"name":"estimateGaslimit","outputs":[{"internalType":"uint256","name":"gaslimit","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_sender","type":"address"},{"internalType":"uint64","name":"_srcChainId","type":"uint64"},{"internalType":"bytes","name":"_message","type":"bytes"},{"internalType":"address","name":"","type":"address"}],"name":"executeMessage","outputs":[{"internalType":"enum IMessageReceiverApp.ExecutionStatus","name":"","type":"uint8"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_sender","type":"address"},{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint64","name":"_srcChainId","type":"uint64"},{"internalType":"bytes","name":"_message","type":"bytes"},{"internalType":"address","name":"_executor","type":"address"}],"name":"executeMessageWithTransfer","outputs":[{"internalType":"enum IMessageReceiverApp.ExecutionStatus","name":"","type":"uint8"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_sender","type":"address"},{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint64","name":"_srcChainId","type":"uint64"},{"internalType":"bytes","name":"_message","type":"bytes"},{"internalType":"address","name":"_executor","type":"address"}],"name":"executeMessageWithTransferFallback","outputs":[{"internalType":"enum IMessageReceiverApp.ExecutionStatus","name":"","type":"uint8"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"bytes","name":"_message","type":"bytes"},{"internalType":"address","name":"_executor","type":"address"}],"name":"executeMessageWithTransferRefund","outputs":[{"internalType":"enum IMessageReceiverApp.ExecutionStatus","name":"","type":"uint8"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"enum CrossFarmingSender.Chains","name":"","type":"uint8"},{"internalType":"enum DataTypes.MessageTypes","name":"","type":"uint8"}],"name":"gaslimits","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"is1st","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"messageBus","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"nonces","outputs":[{"internalType":"uint64","name":"","type":"uint64"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"enum CrossFarmingSender.Feeds","name":"","type":"uint8"}],"name":"oracle","outputs":[{"internalType":"contract AggregatorV3Interface","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"enum CrossFarmingSender.Feeds","name":"","type":"uint8"}],"name":"oracleUpdateBuffer","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"_message","type":"bytes"}],"name":"sendFarmMessage","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_change","type":"uint256"}],"name":"setBnbChange","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_rate","type":"uint256"}],"name":"setCompensationRate","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_gaslimit","type":"uint256"}],"name":"setCreateProxyGasLimit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"enum CrossFarmingSender.Chains","name":"_chain","type":"uint8"},{"internalType":"enum DataTypes.MessageTypes","name":"_type","type":"uint8"},{"internalType":"uint256","name":"_gaslimit","type":"uint256"}],"name":"setGaslimits","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_messageBus","type":"address"}],"name":"setMessageBus","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"enum CrossFarmingSender.Feeds","name":"_feed","type":"uint8"},{"internalType":"address","name":"_oracle","type":"address"}],"name":"setOracle","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"enum CrossFarmingSender.Feeds","name":"_feed","type":"uint8"},{"internalType":"uint256","name":"_oracleUpdateBuffer","type":"uint256"}],"name":"setOracleUpdateBuffer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_receiver","type":"address"}],"name":"setReceiver","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_vault","type":"address"}],"name":"setVault","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

Deployed Bytecode

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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.