Contract 0xff38b741762220ec785b1037700228d547455c3b

 
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0x2ba944130babfcb42800efce0ccb99054ac66a89060fd5ecd495b640cb6e9e77Harvest218833092021-11-28 2:48:433 days 34 mins ago0xb5780767c87cbd07f86f6e9174795966ea4c3766 IN  0xff38b741762220ec785b1037700228d547455c3b0 MATIC0.013173534
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0x1b8274f2315803a37ee09daa03b76a33399aa700003f493c32a8cd1c0e36628cHarvest218509972021-11-27 6:48:583 days 20 hrs ago0xb5780767c87cbd07f86f6e9174795966ea4c3766 IN  0xff38b741762220ec785b1037700228d547455c3b0 MATIC0.013173534
0x363c692a8299c319774dad292c350f2744d90f1cd164d4eaed2e1e850618cd08Harvest218455962021-11-27 3:30:323 days 23 hrs ago0xb5780767c87cbd07f86f6e9174795966ea4c3766 IN  0xff38b741762220ec785b1037700228d547455c3b0 MATIC0.013173534
0x30b5063f2629db41f95afca2c23c270c34724a7e61ce0e151011285fb5429c16Harvest218392872021-11-26 23:50:014 days 3 hrs ago0xb5780767c87cbd07f86f6e9174795966ea4c3766 IN  0xff38b741762220ec785b1037700228d547455c3b0 MATIC0.0064670076
0x7503185ed1e9bee7314f7db4c8c51d2a6613d49920ed315debb4d1a12ab77cffHarvest218357852021-11-26 21:44:404 days 5 hrs ago0xb5780767c87cbd07f86f6e9174795966ea4c3766 IN  0xff38b741762220ec785b1037700228d547455c3b0 MATIC0.025149474493
0xb3ec9a69dad6954293fbc2d189f5423acc6822a912d8ce3758ab488559fb323dHarvest218283032021-11-26 16:48:314 days 10 hrs ago0xb5780767c87cbd07f86f6e9174795966ea4c3766 IN  0xff38b741762220ec785b1037700228d547455c3b0 MATIC0.013173534
0x634ecd456747e433d12a1b8aabcdc000fcc23b3beac2683e09f2e2faf2ff33c3Harvest218207422021-11-26 11:53:194 days 15 hrs ago0xb5780767c87cbd07f86f6e9174795966ea4c3766 IN  0xff38b741762220ec785b1037700228d547455c3b0 MATIC0.013173534
0xbe4b0aa1e0b8cfa8bd037967e930dc3efe2f8ccb6b1d04bfaebb89422da300dcHarvest218126672021-11-26 6:47:294 days 20 hrs ago0xb5780767c87cbd07f86f6e9174795966ea4c3766 IN  0xff38b741762220ec785b1037700228d547455c3b0 MATIC0.013173534
0x20003632bad4af42a2b51a90f950eeacffa0587c8e77dbdc8d7ece84f3fa9f01Harvest218102092021-11-26 5:08:174 days 22 hrs ago0xb5780767c87cbd07f86f6e9174795966ea4c3766 IN  0xff38b741762220ec785b1037700228d547455c3b0 MATIC0.013173534
0x733b3528438f7c9c4bc0daacfafa3f6fe08f4908643c177a5ca1c1bac295aa5bHarvest218062502021-11-26 2:30:165 days 53 mins ago0xb5780767c87cbd07f86f6e9174795966ea4c3766 IN  0xff38b741762220ec785b1037700228d547455c3b0 MATIC0.013173534
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Contract Source Code Verified (Exact Match)

Contract Name:
IronStrat

Compiler Version
v0.6.12+commit.27d51765

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion, None license

Contract Source Code (Solidity)

/**
 *Submitted for verification at polygonscan.com on 2021-06-30
*/

// SPDX-License-Identifier: MIT
// File: @openzeppelin/contracts/GSN/Context.sol
// Eleven Finance strategy

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;
    }
}

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;
    }
}


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);



    function burn(uint) external;
    
    /**
     * @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);
}

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;
    }
}

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);
            }
        }
    }
}


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");
        }
    }
}

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());
    }
}


pragma solidity ^0.6.0;

interface IPanwexRouter {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB, uint liquidity);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);
    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETHWithPermit(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountToken, uint amountETH);
    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapTokensForExactTokens(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);
    function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);

    function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
    function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
    function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
    
    
    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;

}

pragma solidity ^0.6.0;

interface IPanwexPair {
    function token0() external view returns (address);
    function token1() external view returns (address);
}

pragma solidity ^0.6.0;

interface IMasterChef {
    function deposit(uint256 _pid, uint256 _amount) external;
    function withdraw(uint256 _pid, uint256 _amount) external;
    function claim(uint256 _pid) external;
    function pendingReward(uint256 _pid, address _user) external view returns (uint256);
    function userInfo(uint256 _pid, address _user) external view returns (uint256, uint256);
    function emergencyWithdraw(uint256 _pid) external;
}

pragma solidity ^0.6.0;

interface Buybackstrat{
    function chargeFees(address, address) external;
    function defaultFeeBps() external view returns(uint);
}

pragma solidity ^0.6.0;


/**
 * @dev Implementation of a strategy to get yields from farming LP Pools in PanwexSwap.
 * PanwexSwap is an automated market maker (“AMM”) that allows two tokens to be exchanged on the Binance Smart Chain.
 * It is fast, cheap, and allows anyone to participate. PanwexSwap is aiming to be the #1 liquidity provider on BSC.
 *
 * This strategy simply deposits whatever funds it receives from the vault into the selected MasterChef pool.
 * CAKE rewards from providing liquidity are farmed every few minutes, sold and split 50/50. 
 * The corresponding pair of assets are bought and more liquidity is added to the MasterChef pool.
 * 
 * This strat is currently compatible with all LP pools.
 */
contract IronStrat is Ownable, Pausable {
    using SafeERC20 for IERC20;
    using Address for address;
    using SafeMath for uint256;

    /**
     * @dev Tokens Used:
     * {wmatic} - Required for liquidity routing when doing swaps.
     * {wex} - Token generated by staking our funds. In this case it's the CAKEs token.
     * {eleven} - ElevenFinance token, used to send funds to the treasury.
     * {lpPair} - Token that the strategy maximizes. The same token that users deposit in the vault.
     * {lpToken0, lpToken1} - Tokens that the strategy maximizes. IPanwexPair tokens
     */
    address constant public iron = address(0xD86b5923F3AD7b585eD81B448170ae026c65ae9a);
    address constant public titan = address(0xaAa5B9e6c589642f98a1cDA99B9D024B8407285A);
    address constant public usdc = address(0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174);
    
    address constant public unirouter = address(0x1b02dA8Cb0d097eB8D57A175b88c7D8b47997506);
    
    address[] public titanToIron = [titan, iron];
    address[] public ironToUsdc = [iron, usdc];
    
    address public buybackstrat;


    /**
     * @dev Third Party Contracts:
     * {unirouter} - PanwexSwap unirouter
     * {masterchef} - MasterChef contract
     * {poolId} - MasterChef pool id
     */

    address constant public masterchef = address(0x65430393358e55A658BcdE6FF69AB28cF1CbB77a);
    uint constant public pid = 1;

    /**
     * @dev Eleven Contracts:
     * {rewards} - Reward pool where the strategy fee earnings will go.
     * {treasury} - Address of the ElevenFinance treasury
     * {vault} - Address of the vault that controls the strategy's funds.
     */
    address public vault;
    address public lpPair;

    /**
     * @dev Distribution of fees earned. This allocations relative to the % implemented on doSplit().
     * Current implementation separates 1.5% for fees.
     *
     * {REWARDS_FEE} - 0.625% goes to ELEVEN holders through the {rewards} pool.
     * {CALL_FEE} - 0.25% goes to whoever executes the harvest function as gas subsidy.
     * {TREASURY_FEE} - 0.25% goes to the treasury.
     * {MAX_FEE} - Aux const used to safely calc the correct amounts.
     *
     * {WITHDRAWAL_FEE} - Fee taxed when a user withdraws funds. 10 === 0.1% fee.
     * {WITHDRAWAL_MAX} - Aux const used to safely calc the correct amounts.
     */

    uint constant public WITHDRAWAL_FEE = 10;
    uint constant public WITHDRAWAL_MAX = 10000;

    /**
     * @dev Event that is fired each time someone harvests the strat.
     */
    event StratHarvest(address indexed harvester);

    /**
     * @dev Initializes the strategy with the token to maximize.
     */
    constructor() public {
        lpPair = 0x85dE135fF062Df790A5f20B79120f17D3da63b2d;
        vault = 0x198265Ff748DaE52a6c58ceE1a91E1457eF957eF;

        IERC20(lpPair).safeApprove(masterchef, 0);
        IERC20(lpPair).safeApprove(masterchef, uint(-1));
        IERC20(iron).safeApprove(unirouter, 0);
        IERC20(iron).safeApprove(unirouter, uint(-1));
        IERC20(usdc).safeApprove(unirouter, 0);
        IERC20(usdc).safeApprove(unirouter, uint(-1));
        IERC20(titan).safeApprove(unirouter, 0);
        IERC20(titan).safeApprove(unirouter, uint(-1));
        
        setBuybackStrat(0x4eeaA7E075E001F14A2C0856115836384af690c7);
    }

    function setBuybackStrat(address _address) public onlyOwner{
        buybackstrat = _address;
    }

    /**
     * @dev Function that puts the funds to work.
     * It gets called whenever someone deposits in the strategy's vault contract.
     * It deposits {lpPair} in the MasterChef to farm {wex}
     */
    function deposit() public {
        uint256 pairBal = IERC20(lpPair).balanceOf(address(this));

        if (pairBal > 0) {
            IMasterChef(masterchef).deposit(pid,pairBal);
        }
    }
    
    /**
     * @dev Withdraws funds and sents them back to the vault.
     * It withdraws {lpPair} from the MasterChef.
     * The available {lpPair} minus fees is returned to the vault.
     */
    function withdraw(uint256 _amount) external {
        require(msg.sender == vault, "!vault");

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

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

        
        uint256 withdrawalFee = _amount.mul(WITHDRAWAL_FEE).div(WITHDRAWAL_MAX);
        IERC20(lpPair).safeTransfer(vault, _amount.sub(withdrawalFee));
    }
    
    
    function addLiquidity() internal{
        uint amount = IERC20(titan).balanceOf(address(this));
        IPanwexRouter(unirouter).swapExactTokensForTokens(amount, 0, titanToIron, address(this), now + 600);
        uint amountHalf = IERC20(iron).balanceOf(address(this)).div(2);
        IPanwexRouter(unirouter).swapExactTokensForTokens(amountHalf, 0, ironToUsdc, address(this), now + 600);
        IPanwexRouter(unirouter).addLiquidity(iron, usdc, IERC20(iron).balanceOf(address(this)), IERC20(usdc).balanceOf(address(this)), 1, 1, address(this), now + 600);
    }

    /**
     * @dev Core function of the strat, in charge of collecting and re-investing rewards.
     * 1. It claims rewards from the MasterChef.
     * 2. It charges the system fees to simplify the split.
     * 3. It swaps the {wex} token for {lpToken0} & {lpToken1}
     * 4. Adds more liquidity to the pool.
     * 5. It deposits the new LP tokens.
     */
    function harvest() external whenNotPaused {
        require(!Address.isContract(msg.sender), "!contract");
        IMasterChef(masterchef).deposit(pid,0);
        chargeFees();
        addLiquidity();
        deposit();
    }
    
    function getBPSFee() public view returns (uint) {
        return Buybackstrat(buybackstrat).defaultFeeBps();
    }

    function chargeFees() internal {
        if(buybackstrat!=address(0)){
            uint toSell = IERC20(titan).balanceOf(address(this)).mul(getBPSFee()).div(10000);
            IERC20(titan).transfer(buybackstrat, toSell);
        }
    }


    /**
     * @dev Function to calculate the total underlaying {lpPair} held by the strat.
     * It takes into account both the funds in hand, as the funds allocated in the MasterChef.
     */
    function balanceOf() public view returns (uint256) {
        return balanceOfLpPair().add(balanceOfPool());
    }

    /**
     * @dev It calculates how much {lpPair} the contract holds.
     */
    function balanceOfLpPair() public view returns (uint256) {
        return IERC20(lpPair).balanceOf(address(this));
    }

    /**
     * @dev It calculates how much {lpPair} the strategy has allocated in the MasterChef
     */
    function balanceOfPool() public view returns (uint256) {
        (uint256 _amount, ) = IMasterChef(masterchef).userInfo(pid, address(this));
        return _amount;
    }

    /**
     * @dev Function that has to be called as part of strat migration. It sends all the available funds back to the 
     * vault, ready to be migrated to the new strat.
     */ 
    function retireStrat() external onlyOwner {
        panic();

        uint256 pairBal = IERC20(lpPair).balanceOf(address(this));
        IERC20(lpPair).transfer(vault, pairBal);
    }

    /**
     * @dev Pauses deposits. Withdraws all funds from the MasterChef, leaving rewards behind
     */
    function panic() public onlyOwner {
        pause();
        IMasterChef(masterchef).emergencyWithdraw(pid);
    }

    /**
     * @dev Pauses the strat.
     */
    function pause() public onlyOwner {
        _pause();
        IERC20(lpPair).safeApprove(masterchef, 0);
        IERC20(iron).safeApprove(unirouter, 0);
        IERC20(usdc).safeApprove(unirouter, 0);
        IERC20(titan).safeApprove(unirouter, 0);
    }

    /**
     * @dev Unpauses the strat.
     */
    function unpause() external onlyOwner {
        _unpause();

        IERC20(lpPair).safeApprove(masterchef, 0);
        IERC20(lpPair).safeApprove(masterchef, uint(-1));
        IERC20(iron).safeApprove(unirouter, 0);
        IERC20(iron).safeApprove(unirouter, uint(-1));
        IERC20(usdc).safeApprove(unirouter, 0);
        IERC20(usdc).safeApprove(unirouter, uint(-1));
        IERC20(titan).safeApprove(unirouter, 0);
        IERC20(titan).safeApprove(unirouter, uint(-1));
        IERC20(lpPair).safeApprove(masterchef, uint(-1));
    }
}

Contract Security Audit

Contract ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"harvester","type":"address"}],"name":"StratHarvest","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"inputs":[],"name":"WITHDRAWAL_FEE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"WITHDRAWAL_MAX","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"balanceOfLpPair","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"balanceOfPool","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"buybackstrat","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"deposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getBPSFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"harvest","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"iron","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"ironToUsdc","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lpPair","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"masterchef","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"panic","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pid","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"retireStrat","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"setBuybackStrat","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"titan","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"titanToIron","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unirouter","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"usdc","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"vault","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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