MATIC Price: $1.00 (-1.66%)
Gas: 318 GWei
 

Overview

MATIC Balance

Polygon PoS Chain LogoPolygon PoS Chain LogoPolygon PoS Chain Logo0 MATIC

MATIC Value

$0.00

Sponsored

Transaction Hash
Method
Block
From
To
Value
0x60806040253278822022-02-25 16:58:11762 days ago1645808291IN
 Contract Creation
0 MATIC0.0716193150

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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x0833f5bD...cE6b1a963
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
FxStateChildTunnel

Compiler Version
v0.8.7+commit.e28d00a7

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 2 : FxStateChildTunnel.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;

import {FxBaseChildTunnel} from "../tunnel/FxBaseChildTunnel.sol";

/**
 * @title FxStateChildTunnel
 */
contract FxStateChildTunnel is FxBaseChildTunnel {
    uint256 public latestStateId;
    address public latestRootMessageSender;
    bytes public latestData;

    constructor(address _fxChild, address _fxRoot) FxBaseChildTunnel(_fxChild) {
        setFxRootTunnel(_fxRoot);
    }

    function _processMessageFromRoot(
        uint256 stateId,
        address sender,
        bytes memory data
    ) internal override validateSender(sender) {
        latestStateId = stateId;
        latestRootMessageSender = sender;
        latestData = data;
    }

    /**
     * @dev Function that returns the amount of stMATIC and MATIC in the PoLido protocol
     * @return First return value is the number of stMATIC present, second value is MATIC
     */
    function getReserves() public view returns (uint256, uint256) {
        (uint256 stMATIC, uint256 MATIC) = abi.decode(
            latestData,
            (uint256, uint256)
        );

        return (stMATIC, MATIC);
    }
}

File 2 of 2 : FxBaseChildTunnel.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

// IFxMessageProcessor represents interface to process message
interface IFxMessageProcessor {
    function processMessageFromRoot(
        uint256 stateId,
        address rootMessageSender,
        bytes calldata data
    ) external;
}

/**
 * @notice Mock child tunnel contract to receive and send message from L2
 */
abstract contract FxBaseChildTunnel is IFxMessageProcessor {
    // MessageTunnel on L1 will get data from this event
    event MessageSent(bytes message);

    // fx child
    address public fxChild;

    // fx root tunnel
    address public fxRootTunnel;

    constructor(address _fxChild) {
        fxChild = _fxChild;
    }

    // Sender must be fxRootTunnel in case of ERC20 tunnel
    modifier validateSender(address sender) {
        require(sender == fxRootTunnel, "FxBaseChildTunnel: INVALID_SENDER_FROM_ROOT");
        _;
    }

    // set fxRootTunnel if not set already
    function setFxRootTunnel(address _fxRootTunnel) public {
        require(fxRootTunnel == address(0x0), "FxBaseChildTunnel: ROOT_TUNNEL_ALREADY_SET");
        fxRootTunnel = _fxRootTunnel;
    }

    function processMessageFromRoot(
        uint256 stateId,
        address rootMessageSender,
        bytes calldata data
    ) external override {
        require(msg.sender == fxChild, "FxBaseChildTunnel: INVALID_SENDER");
        _processMessageFromRoot(stateId, rootMessageSender, data);
    }

    /**
     * @notice Emit message that can be received on Root Tunnel
     * @dev Call the internal function when need to emit message
     * @param message bytes message that will be sent to Root Tunnel
     * some message examples -
     *   abi.encode(tokenId);
     *   abi.encode(tokenId, tokenMetadata);
     *   abi.encode(messageType, messageData);
     */
    function _sendMessageToRoot(bytes memory message) internal {
        emit MessageSent(message);
    }

    /**
     * @notice Process message received from Root Tunnel
     * @dev function needs to be implemented to handle message as per requirement
     * This is called by onStateReceive function.
     * Since it is called via a system call, any event will not be emitted during its execution.
     * @param stateId unique state id
     * @param sender root message sender
     * @param message bytes message that was sent from Root Tunnel
     */
    function _processMessageFromRoot(
        uint256 stateId,
        address sender,
        bytes memory message
    ) internal virtual;
}

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

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_fxChild","type":"address"},{"internalType":"address","name":"_fxRoot","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes","name":"message","type":"bytes"}],"name":"MessageSent","type":"event"},{"inputs":[],"name":"fxChild","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"fxRootTunnel","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getReserves","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestData","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestRootMessageSender","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestStateId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"stateId","type":"uint256"},{"internalType":"address","name":"rootMessageSender","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"processMessageFromRoot","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_fxRootTunnel","type":"address"}],"name":"setFxRootTunnel","outputs":[],"stateMutability":"nonpayable","type":"function"}]

Deployed Bytecode

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