Contract 0x67fa408a4cd3f23d1f14414e6292a01bb451c117 1

/**
 *Submitted for verification at polygonscan.com on 2022-05-27
*/

// This License is not an Open Source license. Copyright 2022. Ozys Co. Ltd. All rights reserved.
pragma solidity 0.5.6;

library SafeMath {
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;

        return c;
    }

    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }

    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a / b + (a % b == 0 ? 0 : 1);
    }
}

interface IERC20 {
    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function transfer(address to, uint256 amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint256);
    function approve(address spender, uint256 amount) external returns (bool);
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
    function burn(uint amount) external;
}

interface IFactoryImpl {
    function getExchangeImplementation() external view returns (address);
    function WETH() external view returns (address payable);
    function mesh() external view returns (address);
    function router() external view returns (address);
}

contract Exchange {
    // ======== ERC20 =========
    event Transfer(address indexed from, address indexed to, uint amount);
    event Approval(address indexed holder, address indexed spender, uint amount);

    string public name = "Meshswap LP";
    string public constant symbol = "MSLP";
    uint8 public decimals = 18;

    uint public totalSupply;

    mapping(address => uint) public balanceOf;
    mapping(address => mapping(address => uint)) public allowance;

    address public factory;
    address public mesh;
    address public router;
    address payable public WETH;
    address public token0;
    address public token1;

    uint112 public reserve0;
    uint112 public reserve1;
    uint32 public blockTimestampLast;

    uint public price0CumulativeLast;
    uint public price1CumulativeLast;
    uint public kLast; 
    uint balance0;
    uint balance1;

    uint public fee;

    uint public mining;

    uint public lastMined;
    uint public miningIndex;

    mapping(address => uint) public userLastIndex;
    mapping(address => uint) public userRewardSum;
    
    bool public entered;    

    // ======== Uniswap V2 Compatible ========
    bytes32 public DOMAIN_SEPARATOR;
    bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
    mapping(address => uint) public nonces;

    // ======== Construction & Init ========
    constructor(address _token0, address _token1, uint _fee) public {
        factory = msg.sender;
        
        if (_token0 != address(0)) {
            mesh = IFactoryImpl(msg.sender).mesh();
            router = IFactoryImpl(msg.sender).router();
        }
        
        require(_token0 != _token1);

        token0 = _token0;
        token1 = _token1;

        require(_fee <= 100);
        fee = _fee;
    }

    function () payable external {
        address impl = IFactoryImpl(factory).getExchangeImplementation();
        require(impl != address(0));
        assembly {
            let ptr := mload(0x40)
            calldatacopy(ptr, 0, calldatasize)
            let result := delegatecall(gas, impl, ptr, calldatasize, 0, 0)
            let size := returndatasize
            returndatacopy(ptr, 0, size)

            switch result
            case 0 { revert(ptr, size) }
            default { return(ptr, size) }
        }
    }

}

• No Contract Security Audit Submitted- Submit Audit Here

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ype":"event"}]

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