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225291112021-11-19 17:27:42860 days ago1637342862  Contract Creation0 FTM
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Contract Source Code Verified (Exact Match)

Contract Name:
MatrixLpAutoCompound

Compiler Version
v0.6.12+commit.27d51765

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, None license

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 8 : MatrixLpAutoCompound.sol
// File: @openzeppelin/contracts/utils/Pausable.sol
import "Ownable.sol";
import "Pausable.sol";
import "SafeERC20.sol";

pragma solidity ^0.6.0;

interface IUniswapRouterETH {
    function addLiquidity(
        address tokenA,
        address tokenB,
        uint256 amountADesired,
        uint256 amountBDesired,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    )
        external
        returns (
            uint256 amountA,
            uint256 amountB,
            uint256 liquidity
        );

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (
            uint256 amountToken,
            uint256 amountETH,
            uint256 liquidity
        );

    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETH(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountToken, uint256 amountETH);

    function swapExactTokensForTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapExactETHForTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable returns (uint256[] memory amounts);

    function swapExactTokensForETH(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;
}

pragma solidity ^0.6.0;

interface IUniswapV2Pair {
    function token0() external view returns (address);

    function token1() external view returns (address);
}

pragma solidity ^0.6.0;

interface IMasterChef {
    function pendingShare(uint256 _pid, address _user)
        external
        view
        returns (uint256);

    function deposit(uint256 _pid, uint256 _amount) external;

    function withdraw(uint256 _pid, uint256 _amount) external;

    function userInfo(uint256 _pid, address _user)
        external
        view
        returns (uint256, uint256);

    function emergencyWithdraw(uint256 _pid) external;
}

pragma solidity ^0.6.0;

contract MatrixLpAutoCompound is Ownable, Pausable {
    using SafeERC20 for IERC20;
    using Address for address;
    using SafeMath for uint256;

    // Matrix contracts
    address public vault;
    address public treasury;

    // Tokens used
    address public wrapped =
        address(0x21be370D5312f44cB42ce377BC9b8a0cEF1A4C83);
    address public output;
    address public want;
    address public lpToken0;
    address public lpToken1;

    /**
     * @dev Distribution of fees earned. This allocations relative to the % implemented on
     * Current implementation separates 5% for fees. Can be changed through the constructor
     * Inputs in constructor should be ratios between the Fee and Max Fee, divisble into percents by 10000
     *
     * {callFee} - Percent of the totalFee reserved for the harvester (1000 = 10% of total fee: 0.5% by default)
     * {treasuryFee} - Percent of the totalFee taken by maintainers of the software (9000 = 90% of total fee: 4.5% by default)
     * {securityFee} - Fee taxed when a user withdraws funds. Taken to prevent flash deposit/harvest attacks.
     * These funds are redistributed to stakers in the pool.
     *
     * {totalFee} - divided by 10,000 to determine the % fee. Set to 5% by default and
     * lowered as necessary to provide users with the most competitive APY.
     *
     * {MAX_FEE} - Maximum fee allowed by the strategy. Hard-capped at 5%.
     * {PERCENT_DIVISOR} - Constant used to safely calculate the correct percentages.
     */

    uint256 public callFee = 1000;
    uint256 public treasuryFee = 9000;
    uint256 public securityFee = 10;
    uint256 public totalFee = 450;
    uint256 public constant MAX_FEE = 500;
    uint256 public constant PERCENT_DIVISOR = 10000;

    // Third party contracts
    address public unirouter;
    address public masterchef;
    uint256 public poolId;

    // Routes
    address[] public outputToWrappedRoute;
    address[] public outputToLp0Route;
    address[] public outputToLp1Route;
    address[] customPath;

    // Controllers
    bool public wrappedRoute = true;

    /**
     * {StratHarvest} Event that is fired each time someone harvests the strat.
     * {TotalFeeUpdated} Event that is fired each time the total fee is updated.
     * {CallFeeUpdated} Event that is fired each time the call fee is updated.
     */
    event StratHarvest(address indexed harvester);
    event TotalFeeUpdated(uint256 newFee);
    event CallFeeUpdated(uint256 newCallFee, uint256 newTreasuryFee);

    constructor(
        address _want,
        uint256 _poolId,
        address _masterChef,
        address _output,
        address _uniRouter,
        address _vault,
        address _treasury
    ) public {
        masterchef = _masterChef;
        unirouter = _uniRouter;
        want = _want;
        vault = _vault;
        treasury = _treasury;

        output = _output;
        outputToWrappedRoute = [output, wrapped];

        lpToken0 = IUniswapV2Pair(want).token0();
        lpToken1 = IUniswapV2Pair(want).token1();
        poolId = _poolId;

        if (lpToken0 == wrapped) {
            outputToLp0Route = [output, wrapped];
        } else if (lpToken0 != output) {
            outputToLp0Route = [output, wrapped, lpToken0];
        }

        if (lpToken1 == wrapped) {
            outputToLp1Route = [output, wrapped];
        } else if (lpToken1 != output) {
            outputToLp1Route = [output, wrapped, lpToken1];
        }

        _giveAllowances();
    }

    /**
     * @dev Function to synchronize balances before new user deposit.
     * Can be overridden in the strategy.
     */
    function beforeDeposit() external virtual {}

    // puts the funds to work
    function deposit() public whenNotPaused {
        uint256 wantBal = IERC20(want).balanceOf(address(this));

        IMasterChef(masterchef).deposit(poolId, wantBal);
    }

    function withdraw(uint256 _amount) external {
        require(msg.sender == vault, "!vault");

        uint256 pairBal = IERC20(want).balanceOf(address(this));

        if (pairBal < _amount) {
            IMasterChef(masterchef).withdraw(poolId, _amount.sub(pairBal));
            pairBal = IERC20(want).balanceOf(address(this));
        }

        if (pairBal > _amount) {
            pairBal = _amount;
        }
        uint256 withdrawFee = pairBal.mul(securityFee).div(PERCENT_DIVISOR);
        IERC20(want).safeTransfer(vault, pairBal.sub(withdrawFee));
    }

    // compounds earnings and charges performance fee
    function harvest() external whenNotPaused {
        require(!Address.isContract(msg.sender), "!contract");

        IMasterChef(masterchef).deposit(poolId, 0);
        chargeFees();
        addLiquidity();
        deposit();

        emit StratHarvest(msg.sender);
    }

    /**
     * @dev Takes out fees from the rewards. Set by constructor
     * callFeeToUser is set as a percentage of the fee,
     * as is treasuryFeeToVault
     */
    function chargeFees() internal {
        uint256 toWftm = IERC20(output)
            .balanceOf(address(this))
            .mul(totalFee)
            .div(PERCENT_DIVISOR);
        IUniswapRouterETH(unirouter)
            .swapExactTokensForTokensSupportingFeeOnTransferTokens(
                toWftm,
                0,
                outputToWrappedRoute,
                address(this),
                now.add(600)
            );

        uint256 wftmBal = IERC20(wrapped).balanceOf(address(this));

        uint256 callFeeToUser = wftmBal.mul(callFee).div(PERCENT_DIVISOR);
        IERC20(wrapped).safeTransfer(msg.sender, callFeeToUser);

        uint256 treasuryFeeToVault = wftmBal.mul(treasuryFee).div(
            PERCENT_DIVISOR
        );
        IERC20(wrapped).safeTransfer(treasury, treasuryFeeToVault);
    }

    // Adds liquidity to AMM and gets more LP tokens.
    function addLiquidity() internal {
        uint256 outputHalf = IERC20(output).balanceOf(address(this)).div(2);

        if (lpToken0 != output) {
            if (wrappedRoute && lpToken0 != wrapped) {
                outputToLp0Route = [output, wrapped, lpToken0];
            } else {
                outputToLp0Route = [output, lpToken0];
            }

            IUniswapRouterETH(unirouter).swapExactTokensForTokensSupportingFeeOnTransferTokens(
                outputHalf,
                0,
                outputToLp0Route,
                address(this),
                now.add(600)
            );
        }

        if (lpToken1 != output) {
            if (wrappedRoute && lpToken1 != wrapped) {
                outputToLp1Route = [output, wrapped, lpToken1];
            } else {
                outputToLp1Route = [output, lpToken1];
            }

            IUniswapRouterETH(unirouter).swapExactTokensForTokensSupportingFeeOnTransferTokens(
                outputHalf,
                0,
                outputToLp1Route,
                address(this),
                now.add(600)
            );
        }

        uint256 lp0Bal = IERC20(lpToken0).balanceOf(address(this));
        uint256 lp1Bal = IERC20(lpToken1).balanceOf(address(this));
        IUniswapRouterETH(unirouter).addLiquidity(
            lpToken0,
            lpToken1,
            lp0Bal,
            lp1Bal,
            1,
            1,
            address(this),
            now.add(600)
        );
    }

    // calculate the total underlaying 'want' held by the strat.
    function balanceOf() public view returns (uint256) {
        return balanceOfWant().add(balanceOfPool());
    }

    // it calculates how much 'want' this contract holds.
    function balanceOfWant() public view returns (uint256) {
        return IERC20(want).balanceOf(address(this));
    }

    // it calculates how much 'want' the strategy has working in the farm.
    function balanceOfPool() public view returns (uint256) {
        (uint256 _amount, ) = IMasterChef(masterchef).userInfo(
            poolId,
            address(this)
        );
        return _amount;
    }

    // called as part of strat migration. Sends all the available funds back to the vault.
    function retireStrat() external {
        require(msg.sender == vault, "!vault");

        IMasterChef(masterchef).emergencyWithdraw(poolId);

        uint256 wantBal = IERC20(want).balanceOf(address(this));
        IERC20(want).transfer(vault, wantBal);
    }

    // pauses deposits and withdraws all funds from third party systems.
    function panic() public onlyOwner {
        pause();
        IMasterChef(masterchef).emergencyWithdraw(poolId);
    }

    function pause() public onlyOwner {
        _pause();

        _removeAllowances();
    }

    function unpause() external onlyOwner {
        _unpause();

        _giveAllowances();

        deposit();
    }

    function _giveAllowances() internal {
        IERC20(want).safeApprove(masterchef, uint256(-1));
        IERC20(output).safeApprove(unirouter, uint256(-1));

        IERC20(lpToken0).safeApprove(unirouter, 0);
        IERC20(lpToken0).safeApprove(unirouter, uint256(-1));

        IERC20(lpToken1).safeApprove(unirouter, 0);
        IERC20(lpToken1).safeApprove(unirouter, uint256(-1));
    }

    function _removeAllowances() internal {
        IERC20(want).safeApprove(masterchef, 0);
        IERC20(output).safeApprove(unirouter, 0);
        IERC20(lpToken0).safeApprove(unirouter, 0);
        IERC20(lpToken1).safeApprove(unirouter, 0);
    }

    function setWrappedRoute(bool _bool) external onlyOwner {
        wrappedRoute = _bool;
    }

    // This function exists incase tokens that do not match the want of this strategy accrue.  For example: an amount of
    // tokens sent to this address in the form of an airdrop of a different token type.  This will allow us to convert
    // this token to the want-token of the strategy, allowing the amount to be paid out to stakers in the matching vault.
    function makeCustomTxn(
        address _fromToken,
        address _toToken,
        address _unirouter,
        uint256 _amount
    ) external onlyOwner {
        require(_fromToken != want, "cannot swap want token");
        approveTxnIfNeeded(_fromToken, _unirouter, _amount);

        customPath = [_fromToken, _toToken];

        IUniswapRouterETH(_unirouter).swapExactTokensForTokens(
            _amount,
            0,
            customPath,
            address(this),
            now.add(600)
        );
    }

    function approveTxnIfNeeded(
        address _token,
        address _unirouter,
        uint256 _amount
    ) internal {
        if (IERC20(_token).allowance(address(this), _unirouter) < _amount) {
            IERC20(_token).safeApprove(_unirouter, uint256(0));
            IERC20(_token).safeApprove(_unirouter, uint256(-1));
        }
    }

    /**
     * @dev updates the total fee, capped at 5%
     */
    function updateTotalFee(uint256 _totalFee)
        external
        onlyOwner
        returns (bool)
    {
        require(_totalFee <= MAX_FEE, "Fee Too High");
        totalFee = _totalFee;
        emit TotalFeeUpdated(totalFee);
        return true;
    }

    /**
     * @dev updates the call fee and adjusts the treasury fee to cover the difference
     */
    function updateCallFee(uint256 _callFee) external onlyOwner returns (bool) {
        callFee = _callFee;
        treasuryFee = PERCENT_DIVISOR.sub(callFee);
        emit CallFeeUpdated(callFee, treasuryFee);
        return true;
    }

    function updateTreasury(address newTreasury)
        external
        onlyOwner
        returns (bool)
    {
        treasury = newTreasury;
        return true;
    }
}

File 2 of 8 : Ownable.sol
import "Context.sol";

pragma solidity ^0.6.0;

/**
 * @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.
 */
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() internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

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

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

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

File 3 of 8 : Context.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

/*
 * @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 GSN 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 payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

File 4 of 8 : Pausable.sol
import "Context.sol";

pragma solidity ^0.6.0;

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */

contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() internal {
        _paused = false;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view returns (bool) {
        return _paused;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        require(!_paused, "Pausable: paused");
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        require(_paused, "Pausable: not paused");
        _;
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

File 5 of 8 : SafeERC20.sol
import "SafeMath.sol";
import "Address.sol";
import "IERC20.sol";

pragma solidity ^0.6.0;

/**
 * @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 SafeMath for uint256;
    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'
        // solhint-disable-next-line max-line-length
        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).add(
            value
        );
        _callOptionalReturn(
            token,
            abi.encodeWithSelector(
                token.approve.selector,
                spender,
                newAllowance
            )
        );
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(
            value,
            "SafeERC20: decreased allowance below zero"
        );
        _callOptionalReturn(
            token,
            abi.encodeWithSelector(
                token.approve.selector,
                spender,
                newAllowance
            )
        );
    }

    /**
     * @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
            // solhint-disable-next-line max-line-length
            require(
                abi.decode(returndata, (bool)),
                "SafeERC20: ERC20 operation did not succeed"
            );
        }
    }
}

File 6 of 8 : SafeMath.sol
pragma solidity ^0.6.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

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

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

File 7 of 8 : Address.sol
pragma solidity ^0.6.2;

/**
 * @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
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies in extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            size := extcodesize(account)
        }
        return size > 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"
        );

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (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"
        );
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(
        address target,
        bytes memory data,
        uint256 weiValue,
        string memory errorMessage
    ) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{value: weiValue}(
            data
        );
        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

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 8 of 8 : IERC20.sol
pragma solidity ^0.6.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, 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 `sender` to `recipient` 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 sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @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
    );
}

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

Contract Security Audit

Contract ABI

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"},{"inputs":[],"name":"securityFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bool","name":"_bool","type":"bool"}],"name":"setWrappedRoute","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"totalFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"treasury","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"treasuryFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unirouter","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_callFee","type":"uint256"}],"name":"updateCallFee","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_totalFee","type":"uint256"}],"name":"updateTotalFee","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newTreasury","type":"address"}],"name":"updateTreasury","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"vault","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"want","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"wrapped","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"wrappedRoute","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}]

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626c653a206e6577206f776e657220697320746865207a65726f2061646472657373536166654d6174683a206d756c7469706c69636174696f6e206f766572666c6f774f776e61626c653a2063616c6c6572206973206e6f7420746865206f776e65725361666545524332303a204552433230206f7065726174696f6e20646964206e6f7420737563636565645361666545524332303a20617070726f76652066726f6d206e6f6e2d7a65726f20746f206e6f6e2d7a65726f20616c6c6f77616e6365a2646970667358221220cc59b185f8ab73e0a1a984a9ff389851b64d465d2ca62513a741d51a10a5a0d464736f6c634300060c0033

Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000002a651563c9d3af67ae0388a5c8f89b867038089e0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000cc0a87f7e7c693042a9cc703661f5060c80acb430000000000000000000000004cdf39285d7ca8eb3f090fda0c069ba5f4145b37000000000000000000000000f491e7b69e4244ad4002bc14e878a34207e38c29000000000000000000000000a40c6c2b91683a57d9c9bace7b3df85e503ff0eb0000000000000000000000008317b428082802c8aa84d670e495a0003d11368a

-----Decoded View---------------
Arg [0] : _want (address): 0x2A651563C9d3Af67aE0388a5c8F89b867038089e
Arg [1] : _poolId (uint256): 0
Arg [2] : _masterChef (address): 0xcc0a87F7e7c693042a9Cc703661F5060c80ACb43
Arg [3] : _output (address): 0x4cdF39285D7Ca8eB3f090fDA0C069ba5F4145B37
Arg [4] : _uniRouter (address): 0xF491e7B69E4244ad4002BC14e878a34207E38c29
Arg [5] : _vault (address): 0xA40c6c2B91683a57d9c9bACe7B3df85E503ff0Eb
Arg [6] : _treasury (address): 0x8317b428082802C8AA84D670E495a0003D11368a

-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 0000000000000000000000002a651563c9d3af67ae0388a5c8f89b867038089e
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [2] : 000000000000000000000000cc0a87f7e7c693042a9cc703661f5060c80acb43
Arg [3] : 0000000000000000000000004cdf39285d7ca8eb3f090fda0c069ba5f4145b37
Arg [4] : 000000000000000000000000f491e7b69e4244ad4002bc14e878a34207e38c29
Arg [5] : 000000000000000000000000a40c6c2b91683a57d9c9bace7b3df85e503ff0eb
Arg [6] : 0000000000000000000000008317b428082802c8aa84d670e495a0003d11368a


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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.