Contract 0x3b3fdc40582a957206aed119842f2313de9ee21b

// SPDX-License-Identifier: MIT

// P1 - P3: OK
pragma solidity 0.8.13;

import '@openzeppelin/contracts/access/Ownable.sol';
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "./interfaces/IUniswapV2Pair.sol";
import "./interfaces/IUniswapV2Factory.sol";
import "./Swapper.sol";

// BrewBoo is MasterChef's left hand and kinda a wizard. He can brew Boo from pretty much anything!
// This contract handles "serving up" rewards for xBoo holders by trading tokens collected from fees for Boo.
// The caller of convertMultiple, the function responsible for converting fees to BOO earns a 0.1% reward for calling.
contract BrewBooV3 is Ownable, ReentrancyGuard {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    IUniswapV2Factory public immutable factory;
    ISwapper public immutable swapper;

    address public immutable xboo;
    address private immutable boo;
    address private immutable wftm;
    uint public devCut;  // in basis points aka parts per 10,000 so 5000 is 50%, cap of 50%, default is 0
    uint public constant BOUNTY_FEE = 10;
    address public devAddr;
    //uint public slippage = 9;

    // set of addresses that can perform certain functions
    mapping(address => bool) public isAuth;
    address[] public authorized;

    modifier onlyAuth() {
        require(isAuth[_msgSender()], "BrewBoo: FORBIDDEN");
        _;
    }

    // C6: It's not a fool proof solution, but it prevents flash loans, so here it's ok to use tx.origin
    modifier onlyEOA() {
        // Try to make flash-loan exploit harder to do by only allowing externally owned addresses.
        require(msg.sender == tx.origin, "BrewBoo: must use EOA");
        _;
    }

    mapping(address => uint) internal converted;
    mapping(address => bool) public overrode;
    mapping(address => bool) public swapperApproved;

    //token bridges to try in order when swapping, first three are immutably wftm, usdc, dai
    mapping(uint => address) public bridgeRoute;
    uint public bridgeRouteAmount = 3; // "array" size aka next free slot in the mapping
    mapping(address => address) public lastRoute; //tokens last succesful route, will be tried first

    mapping(address => mapping(address => address)) public pairOf;

    event SetDevAddr(address _addr);
    event SetDevCut(uint _amount);
    event LogBridgeSet(address indexed token, address indexed bridge);
    event LogConvert(
        address indexed server,
        address indexed token0,
        uint256 amount0,
        uint256 amountBOO
    );
    event LogToggleOverrode(address _adr);
    event LogSlippageOverrode(address _adr);

    constructor(
        address _factory,
        address _xboo,
        address _boo,
        address _wftm,
        address route1,
        address route2
    ) {
        factory = IUniswapV2Factory(_factory);
        xboo = _xboo;
        boo = _boo;
        wftm = _wftm;
        devAddr = msg.sender;
        isAuth[msg.sender] = true;
        authorized.push(msg.sender);
        bridgeRoute[0] = _wftm;
        bridgeRoute[1] = route1;
        bridgeRoute[2] = route2;
        swapper = new Swapper();
    }

    function setBridgeRoute(uint index, address token) external onlyAuth {
        require(index > 2, "first 3 bridge tokens are immutable");
        require(index <= bridgeRouteAmount, "index too large, use next free slot");

        bridgeRoute[index] = token;
        if(index == bridgeRouteAmount)
            bridgeRouteAmount += 1;
    }

    function setBridgeRouteAmount(uint amount) external onlyAuth {
        require(amount > 2);
        bridgeRouteAmount = amount;
    }

    function isLpToken(address _adr) internal returns (bool) {
        if (overrode[_adr]) return false;
        IUniswapV2Pair pair = IUniswapV2Pair(_adr);
        try pair.token0() returns (address token0) {
            address token1 = pair.token1();
            address realPair = _getPair(token0, token1);
            // check if newly derived pair is the same as the address passed in
            if (_adr != realPair) {
                overrode[_adr] = true;
                emit LogToggleOverrode(_adr);
                return false;
            }
            return true;
        } catch {
            overrode[_adr] = true;
            return false;
        }
    }

    // Begin Owner functions
    function addAuth(address _auth) external onlyOwner {
        isAuth[_auth] = true;
        authorized.push(_auth);
    }

    function revokeAuth(address _auth) external onlyOwner {
        isAuth[_auth] = false;
    }


    function setDevCut(uint _amount) external onlyOwner {
        require(_amount <= 5000, "setDevCut: cut too high");
        devCut = _amount;

        emit SetDevCut(_amount);
    }

    function setDevAddr(address _addr) external {
        require(owner() == _msgSender() || devAddr == _msgSender(), "not allowed");
        require(_addr != address(0), "setDevAddr, address cannot be zero address");
        devAddr = _addr;

        emit SetDevAddr(_addr);
    }
    // End owner functions

    // onlyAuth type functions

    function overrideSlippage(address _token) external onlyAuth {
        swapper.overrideSlippage(_token);
        emit LogSlippageOverrode(_token);
    }

    function setSlippage(uint _amt) external onlyAuth {
        swapper.setSlippage(_amt);
    }

    function setBridge(address token, address bridge) external onlyAuth {
        // Checks
        require(
            token != boo && token != wftm && token != bridge,
            "BrewBoo: Invalid bridge"
        );

        // Effects
        lastRoute[token] = bridge;
        emit LogBridgeSet(token, bridge);
    }

    function convertMultiple(
        address[] calldata token0,
        address[] calldata token1,
        uint[] calldata LPamounts
    ) external onlyEOA() nonReentrant() {
        uint i;
        IUniswapV2Pair pair;
        for (i = 0; i < token0.length;) {
            if (token0[i] == token1[i]) {
                require(!isLpToken(token0[i]), "no LP allowed");
                unchecked {++i;}
                continue;
            }
            require(!isLpToken(token0[i]) && !isLpToken(token1[i]), "no LP allowed");
            pair = IUniswapV2Pair(_getPair(token0[i], token1[i]));
            require(address(pair) != address(0), "BrewBoo: Invalid pair");

            IERC20(address(pair)).safeTransfer(address(pair), LPamounts.length == 0 ? pair.balanceOf(address(this)) : LPamounts[i]);
            pair.burn(address(this));
            unchecked {++i;}
        }

        converted[wftm] = block.number; // wftm is done last
        for (i = 0; i < token0.length;) {
            if(block.number > converted[token0[i]]) {
                _convertStep(token0[i], IERC20(token0[i]).balanceOf(address(this)));
                converted[token0[i]] = block.number;
            }
            if(block.number > converted[token1[i]]) {
                _convertStep(token1[i], IERC20(token1[i]).balanceOf(address(this)));
                converted[token1[i]] = block.number;
            }
            unchecked {++i;}
        }
        // final step is to swap all wFTM to BOO and disperse it
        i = IERC20(wftm).balanceOf(address(this)); //reuse i for amount to save gas
        bool success;
        if (devCut > 0) {
            uint cut = i.mul(devCut).div(10000);
            IERC20(wftm).safeTransfer(devAddr, cut);
            i = i.sub(cut);
        }
        (, success) = _swap(wftm, boo, i);
        if(!success)
            revert("BrewBooV3: swap failure in toBOO");

        //disperse
        uint _amt = IERC20(boo).balanceOf(address(this));
        uint bounty = _amt.mul(BOUNTY_FEE).div(10000);
        i = _amt.sub(bounty); //reuse i for amount to save gas
        IERC20(boo).safeTransfer(xboo, i); // send xboo its share
        IERC20(boo).safeTransfer(_msgSender(), bounty); // send message sender their share of 0.1%
        emit LogConvert(_msgSender(), boo, _amt, i);
    }

    // internal functions

    function _convertStep(
        address token0,
        uint256 amount
    ) internal returns (bool) {
        // Interactions
        if (token0 == wftm || token0 == boo) {
            return true;
        } else {
            address bridge = lastRoute[token0];
            bool success = false;
            if(bridge != address(0))
                (amount, success) = _swap(token0, bridge, amount);

            if(success)
                _convertStep(bridge, amount);
            else for(uint i = 0; i < bridgeRouteAmount;) {
                bridge = bridgeRoute[i];
                if(bridge == address(0)) {
                    unchecked {++i;}
                    continue;
                }
                (amount, success) = _swap(token0, bridge, amount);
                if(!success)
                    if(i == bridgeRouteAmount - 1)
                        revert("BrewBooV3: bridge route failure - all options exhausted");
                    else {
                        unchecked {++i;}
                        continue;
                    }
                lastRoute[token0] = bridge;
                _convertStep(bridge, amount);
                break;
            }
        }
        return true;
    }

    function _swap(
        address fromToken,
        address toToken,
        uint256 amountIn
    ) internal returns (uint256 amountOut, bool success) {
        if(fromToken == toToken)
            return (amountIn, false);

        if(!swapperApproved[fromToken]) {
            IERC20(fromToken).approve(address(swapper), 2**256 - 1);
            swapperApproved[fromToken] = true;
        }

        try swapper.swap(fromToken, IUniswapV2Pair(_getPair(fromToken, toToken)), amountIn) returns (uint amount) {
            return (amount, true);
        } catch {
            return (amountIn, false);
        }
    }

    function _getPair(address tokenA, address tokenB) internal returns (address pair) {
        (tokenA, tokenB) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
        pair = pairOf[tokenA][tokenB];
        if(pair == address(0)) {
            pair = factory.getPair(tokenA, tokenB);
            pairOf[tokenA][tokenB] = pair;
        }
    }

    //allows migration of lp tokens balance ONLY to the new(current) brewboo
    function migrate(address[] calldata tokens) external {
        address feToo = factory.feeTo();
        for(uint i = 0; i < tokens.length; ++i)
            IERC20(tokens[i]).transfer(feToo, IERC20(tokens[i]).balanceOf(address(this)));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

pragma solidity ^0.8.0;

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

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

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

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

    /**
     * @dev 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() == _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 {
        _transferOwnership(address(0));
    }

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/math/SafeMath.sol)

pragma solidity ^0.8.0;

// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.

/**
 * @dev Wrappers over Solidity's arithmetic operations.
 *
 * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler
 * now has built in overflow checking.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // 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 (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @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) {
        return a + b;
    }

    /**
     * @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 a - b;
    }

    /**
     * @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) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting 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 a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting 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) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * 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) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.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));
        }
    }

    /**
     * @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");
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;

interface IUniswapV2Pair {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    function name() external pure returns (string memory);
    function symbol() external pure returns (string memory);
    function decimals() external pure returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(address owner, address spender) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(address from, address to, uint value) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function PERMIT_TYPEHASH() external pure returns (bytes32);
    function nonces(address owner) external view returns (uint);

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;

    event Mint(address indexed sender, uint amount0, uint amount1);
    event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
    event Swap(
        address indexed sender,
        uint amount0In,
        uint amount1In,
        uint amount0Out,
        uint amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint);
    function factory() external view returns (address);
    function token0() external view returns (address);
    function token1() external view returns (address);
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
    function price0CumulativeLast() external view returns (uint);
    function price1CumulativeLast() external view returns (uint);
    function kLast() external view returns (uint);

    function mint(address to) external returns (uint liquidity);
    function burn(address to) external returns (uint amount0, uint amount1);
    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
    function skim(address to) external;
    function sync() external;

    function initialize(address, address) external;
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;

interface IUniswapV2Factory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint);

    function feeTo() external view returns (address);
    function feeToSetter() external view returns (address);

    function getPair(address tokenA, address tokenB) external view returns (address pair);
    function allPairs(uint) external view returns (address pair);
    function allPairsLength() external view returns (uint);

    function createPair(address tokenA, address tokenB) external returns (address pair);

    function setFeeTo(address) external;
    function setFeeToSetter(address) external;
}

// SPDX-License-Identifier: GPL-3.0

pragma solidity 0.8.13;

import '@openzeppelin/contracts/access/Ownable.sol';
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "./interfaces/IUniswapV2Pair.sol";
import "./interfaces/ISwapper.sol";


contract Swapper is ISwapper, Ownable {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;


    uint public slippage = 9;
    mapping(address => bool) public slippageOverrode;


    // onlyAuth type functions

    function overrideSlippage(address _token) external onlyOwner {
        slippageOverrode[_token] = !slippageOverrode[_token];
    }

    function setSlippage(uint _amt) external onlyOwner {
        require(_amt < 20, "slippage setting too high"); // the higher this setting, the lower the slippage tolerance, too high and buybacks would never work
        slippage = _amt;
    }

    function swap(
        address fromToken,
        IUniswapV2Pair pair,
        uint256 amountIn
    ) external returns (uint256 amountOut) {
        require(address(pair) != address(0), "BrewBoo: Cannot convert");

        (uint256 ui1, uint256 ui2, ) = pair.getReserves();
        bool isToken0 = fromToken == pair.token0();
        (ui1, ui2) = isToken0 ? (ui1, ui2) : (ui2, ui1);
        
        IERC20(fromToken).safeTransferFrom(msg.sender, address(pair), amountIn);
        amountIn = IERC20(fromToken).balanceOf(address(pair)).sub(ui1); // calculate amount that was transferred, this accounts for transfer taxes
        require(ui1.div(amountIn) > slippage || slippageOverrode[fromToken], "slippage too high");

        require(amountIn > 0, 'BrewBoo: INSUFFICIENT_INPUT_AMOUNT');
        require(ui1 > 0 && ui2 > 0, 'BrewBoo: INSUFFICIENT_LIQUIDITY');
        amountIn = amountIn.mul(998);
        amountOut = amountIn.mul(ui2) / ui1.mul(1000).add(amountIn);

        (ui1, ui2) = isToken0 ? (uint(0), amountOut) : (amountOut, uint(0));
        pair.swap(ui1, ui2, msg.sender, new bytes(0));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @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 `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);

    /**
     * @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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.8.0;

import "./IUniswapV2Pair.sol";

interface ISwapper {
    function swap(
        address fromToken,
        IUniswapV2Pair pair,
        uint256 amountIn
    ) external returns (uint256 amountOut);
    function overrideSlippage(address _token) external;
    function setSlippage(uint _amt) external;

}

{
  "optimizer": {
    "enabled": true,
    "runs": 999999
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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000000000000000000000000152ee697f2e276fa89e96742e9bb9ab1f2e61be3000000000000000000000000a48d959ae2e88f1daa7d5f611e01908106de7598000000000000000000000000841fad6eae12c286d1fd18d1d525dffa75c7effe00000000000000000000000021be370d5312f44cb42ce377bc9b8a0cef1a4c8300000000000000000000000004068da6c83afcfa0e13ba15a6696662335d5b750000000000000000000000008d11ec38a3eb5e956b052f67da8bdc9bef8abf3e

-----Decoded View---------------
Arg [0] : _factory (address): 0x152ee697f2e276fa89e96742e9bb9ab1f2e61be3
Arg [1] : _xboo (address): 0xa48d959ae2e88f1daa7d5f611e01908106de7598
Arg [2] : _boo (address): 0x841fad6eae12c286d1fd18d1d525dffa75c7effe
Arg [3] : _wftm (address): 0x21be370d5312f44cb42ce377bc9b8a0cef1a4c83
Arg [4] : route1 (address): 0x04068da6c83afcfa0e13ba15a6696662335d5b75
Arg [5] : route2 (address): 0x8d11ec38a3eb5e956b052f67da8bdc9bef8abf3e

-----Encoded View---------------
6 Constructor Arguments found :
Arg [0] : 000000000000000000000000152ee697f2e276fa89e96742e9bb9ab1f2e61be3
Arg [1] : 000000000000000000000000a48d959ae2e88f1daa7d5f611e01908106de7598
Arg [2] : 000000000000000000000000841fad6eae12c286d1fd18d1d525dffa75c7effe
Arg [3] : 00000000000000000000000021be370d5312f44cb42ce377bc9b8a0cef1a4c83
Arg [4] : 00000000000000000000000004068da6c83afcfa0e13ba15a6696662335d5b75
Arg [5] : 0000000000000000000000008d11ec38a3eb5e956b052f67da8bdc9bef8abf3e