Contract Address Details

0x7548279357C88574451742A1d40683051888c623

Contract Name
Lockup
Creator
0x4afd6d–e2c840 at 0x2a2645–3659f7
Balance
0.4 GDCC ( )
Tokens
Fetching tokens...
Transactions
4 Transactions
Transfers
4 Transfers
Gas Used
612,351
Last Balance Update
6357663
Contract name:
Lockup




Optimization enabled
false
Compiler version
v0.8.13+commit.abaa5c0e




EVM Version
default




Verified at
2022-06-13T07:51:14.193006Z

Contract source code

// File: @openzeppelin/contracts/utils/math/SafeMath.sol


// 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;
        }
    }
}

// File: @openzeppelin/contracts/security/ReentrancyGuard.sol


// 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;
    }
}

// File: @openzeppelin/contracts/utils/Context.sol


// 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;
    }
}

// File: @openzeppelin/contracts/access/Ownable.sol


// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

pragma solidity ^0.8.0;


/**
 * @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.
 */
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);
    }
}

// File: @openzeppelin/contracts/utils/Address.sol


// 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);
            }
        }
    }
}

// File: @openzeppelin/contracts/token/ERC20/IERC20.sol


// 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);
}

// File: @openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol


// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;



/**
 * @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 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");
        }
    }
}

// File: lp1.sol

//SPDX-License-Identifier: Unlicense
pragma solidity ^0.8.0;





contract Lockup is ReentrancyGuard, Ownable {
    using Address for address;
    using SafeERC20 for IERC20;
    using SafeMath for uint256;

    struct LOCKER {
        uint256 id;
        address token;
        address owner;
        uint256 amount;
        uint256 unlockTime;
    }
    uint256 private lockerCount = 0;
    LOCKER[] private lockers;

    uint256 public lockFee = 100000000000000000; //0.1 BNB
    uint public lockFeeLp = 50; // 0.5% = 50/10000

    event Locking(address, address, uint256, uint256);
    event Unlocking(uint, address, uint256);
    event Extending(uint, address, uint256);
	event Increasing(uint, address, uint256);
	event OwnershipTransfering(uint, address, address);

    function lockByLp(address _token, uint256 _amount, uint256 _unlockTime) public {
        require(_token != address(0), "Zero address");
        require(_unlockTime >= block.timestamp, "Invalid unlock time");
        require(_amount > 0, "Invalid token amount");
        IERC20 tokenContract = IERC20(address(_token));
        tokenContract.transferFrom(msg.sender, address(this), _amount.add(_amount.mul(lockFeeLp).div(10000)));
        lockers.push(LOCKER(lockerCount, _token, msg.sender, _amount, _unlockTime));
        lockerCount ++;
        emit Locking(_token, msg.sender, _amount, _unlockTime);
    }

    function lockByNative(address _token, uint256 _amount, uint256 _unlockTime) public payable {
        require(_token != address(0), "Zero address");
        require(_unlockTime >= block.timestamp, "Invalid unlock time");
        require(_amount > 0, "Invalid token amount");
        require(lockFee <= msg.value, "Native token is not correct");
        IERC20 tokenContract = IERC20(address(_token));
        tokenContract.transferFrom(msg.sender, address(this), _amount);
        lockers.push(LOCKER(lockerCount, _token, msg.sender, _amount, _unlockTime));
        lockerCount ++;
        emit Locking(_token, msg.sender, _amount, _unlockTime);
    }

    function unlock(uint256 _id, uint256 _amount) public {
        require(_id < lockerCount, "Invalid locker id");
        uint _idx = 0;
        for(_idx = 0;_idx < lockers.length;_idx ++){
            if(lockers[_idx].id == _id){
                require(lockers[_idx].unlockTime <= block.timestamp, "Invalid unlock time");
                require(lockers[_idx].owner == msg.sender, "Invalid Owner");
                IERC20 tokenContract = IERC20(address(lockers[_idx].token));
                lockers[_idx].amount -= _amount;
                tokenContract.transfer(msg.sender, _amount);
                emit Unlocking(_id, msg.sender, _amount);
                if(lockers[_idx].amount == 0) {
                    lockers[_idx] = lockers[lockers.length - 1];
                    lockers.pop();
                }
				break;
            }
        }
    }

    function extend(uint256 _id, uint256 _unlockTime) public {
        require(_id < lockerCount, "Invalid locker id");
        require(_unlockTime >= block.timestamp, "Invalid unlock time");
        uint _idx = 0;
        for(_idx = 0;_idx < lockers.length;_idx ++){
            if(lockers[_idx].id == _id){
                require(lockers[_idx].owner == msg.sender, "Invalid owner");
                require(lockers[_idx].unlockTime <= _unlockTime, "Invalid unlock time");
                lockers[_idx].unlockTime = _unlockTime;
                emit Extending(_id, msg.sender, _unlockTime);
                break;
            }
        }
    }
	
	function increaseByLp(uint256 _id, uint256 _amount) public {
        require(_id < lockerCount, "Invalid locker id");
        require(_amount > 0, "Invalid token amount");
        uint _idx = 0;
        for(_idx = 0;_idx < lockers.length;_idx ++){
            if(lockers[_idx].id == _id){
                    require(lockers[_idx].owner == msg.sender, "Invalid owner");
					IERC20 tokenContract = IERC20(address(lockers[_idx].token));
					tokenContract.transferFrom(msg.sender, address(this), _amount.add(_amount.div(200)));
					lockers[_idx].amount += _amount;
                    emit Increasing(_id, msg.sender, _amount);
					break;
            }
        }
    }
	
	function increaseByNative(uint _id, uint256 _amount) public payable {
        require(_id < lockerCount, "Invalid locker id");
        require(_amount > 0, "Invalid token amount");
		require(lockFee <= msg.value, "Native token is not correct");
        uint _idx = 0;
        for(_idx = 0;_idx < lockers.length;_idx ++){
            if(lockers[_idx].id == _id){
                require(lockers[_idx].owner == msg.sender, "Invalid owner");
                IERC20 tokenContract = IERC20(address(lockers[_idx].token));
                tokenContract.transferFrom(msg.sender, address(this), _amount);
                lockers[_idx].amount += _amount;
                emit Increasing(_id, msg.sender, _amount);
                break;
            }
        }
    }

    function changeOwner(uint256 _id, address _newOwner) public {
        require(_id < lockerCount, "Invalid locker id");
        require(_newOwner != address(0), "Must be non-zero address");
        uint _idx = 0;
        for(_idx = 0;_idx < lockers.length;_idx ++){
            if(lockers[_idx].id == _id){
                require(lockers[_idx].owner == msg.sender, "Invalid owner");
                lockers[_idx].owner = _newOwner;
				emit OwnershipTransfering(_id, msg.sender, _newOwner);
				break;
            }
        }
    }
	
	function isExistence(uint _id) public view returns (bool) {
		for(uint i = 0;i < lockers.length;i ++){
            if(lockers[i].id == _id){
                return true;
            }
        }
		return false;
	}

    function getUnlockTime(uint _id) private view returns (uint256) {
        for(uint i = 0;i < lockers.length;i ++){
            if(lockers[i].id == _id){
                return lockers[i].unlockTime;
            }
        }
        return 0;
    }

    function lockerCountOf(address _owner) public view returns (uint) {
        uint _count = 0;
        for(uint i = 0;i < lockers.length;i ++){
            if(lockers[i].owner == _owner){
                _count ++;
            }
        }
        return _count;
    }

    function lockersOf(address _owner) public view returns (LOCKER[] memory) {
        uint _count = lockerCountOf(_owner);
        LOCKER[] memory _lockers = new LOCKER[](_count);
        _count = 0;
        for(uint i = 0;i < lockers.length;i ++){
            if(lockers[i].owner == _owner){
                LOCKER storage _tmp = lockers[i];
                _lockers[_count] = _tmp;
                _count ++;
            }
        }
        return _lockers;
    }
	
	function allLockers() public view returns (LOCKER[] memory) {
        uint _count = lockers.length;
        LOCKER[] memory _lockers = new LOCKER[](_count);
        for(uint i = 0;i < lockers.length;i ++){
                LOCKER storage _tmp = lockers[i];
                _lockers[i] = _tmp;
        }
        return _lockers;
    }
	
    function withdraw() external onlyOwner{
        payable(msg.sender).transfer(address(this).balance);
    }

    function setLockFeeLp(uint _lockFeeLp) external onlyOwner {
        require(_lockFeeLp >= 0, "Invalid fee percentage");
        require(_lockFeeLp <= 10000, "Invalid fee percentage");
        lockFeeLp = _lockFeeLp;
    }

    function setLockFee(uint256 _lockFee) external onlyOwner {
        require(_lockFee >= 0, "Invalid fee percentage");
        lockFee = _lockFee;
    }

    function withdrawLp(address _tokenAddr) external onlyOwner {
        require(_tokenAddr != address(0), "Invalid token address");
        uint256 _lockedAmount = 0;
        for(uint _idx = 0;_idx < lockers.length;_idx ++){
            if(lockers[_idx].token == _tokenAddr){
                _lockedAmount = _lockedAmount + lockers[_idx].amount;
            }
        }
        IERC20 _tokenContract = IERC20(address(_tokenAddr));
        uint256 _tokenBalance = _tokenContract.balanceOf(address(this));
        uint _tokenAmountToWithdraw = _tokenBalance.sub(_lockedAmount);
        if(_tokenAmountToWithdraw > 0){
            _tokenContract.transfer(msg.sender, _tokenAmountToWithdraw);
        }
    }
}
        

Contract ABI

[{"type":"event","name":"Extending","inputs":[{"type":"uint256","name":"","internalType":"uint256","indexed":false},{"type":"address","name":"","internalType":"address","indexed":false},{"type":"uint256","name":"","internalType":"uint256","indexed":false}],"anonymous":false},{"type":"event","name":"Increasing","inputs":[{"type":"uint256","name":"","internalType":"uint256","indexed":false},{"type":"address","name":"","internalType":"address","indexed":false},{"type":"uint256","name":"","internalType":"uint256","indexed":false}],"anonymous":false},{"type":"event","name":"Locking","inputs":[{"type":"address","name":"","internalType":"address","indexed":false},{"type":"address","name":"","internalType":"address","indexed":false},{"type":"uint256","name":"","internalType":"uint256","indexed":false},{"type":"uint256","name":"","internalType":"uint256","indexed":false}],"anonymous":false},{"type":"event","name":"OwnershipTransfering","inputs":[{"type":"uint256","name":"","internalType":"uint256","indexed":false},{"type":"address","name":"","internalType":"address","indexed":false},{"type":"address","name":"","internalType":"address","indexed":false}],"anonymous":false},{"type":"event","name":"OwnershipTransferred","inputs":[{"type":"address","name":"previousOwner","internalType":"address","indexed":true},{"type":"address","name":"newOwner","internalType":"address","indexed":true}],"anonymous":false},{"type":"event","name":"Unlocking","inputs":[{"type":"uint256","name":"","internalType":"uint256","indexed":false},{"type":"address","name":"","internalType":"address","indexed":false},{"type":"uint256","name":"","internalType":"uint256","indexed":false}],"anonymous":false},{"type":"function","stateMutability":"view","outputs":[{"type":"tuple[]","name":"","internalType":"struct Lockup.LOCKER[]","components":[{"type":"uint256","name":"id","internalType":"uint256"},{"type":"address","name":"token","internalType":"address"},{"type":"address","name":"owner","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"},{"type":"uint256","name":"unlockTime","internalType":"uint256"}]}],"name":"allLockers","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"changeOwner","inputs":[{"type":"uint256","name":"_id","internalType":"uint256"},{"type":"address","name":"_newOwner","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"extend","inputs":[{"type":"uint256","name":"_id","internalType":"uint256"},{"type":"uint256","name":"_unlockTime","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"increaseByLp","inputs":[{"type":"uint256","name":"_id","internalType":"uint256"},{"type":"uint256","name":"_amount","internalType":"uint256"}]},{"type":"function","stateMutability":"payable","outputs":[],"name":"increaseByNative","inputs":[{"type":"uint256","name":"_id","internalType":"uint256"},{"type":"uint256","name":"_amount","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"isExistence","inputs":[{"type":"uint256","name":"_id","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"lockByLp","inputs":[{"type":"address","name":"_token","internalType":"address"},{"type":"uint256","name":"_amount","internalType":"uint256"},{"type":"uint256","name":"_unlockTime","internalType":"uint256"}]},{"type":"function","stateMutability":"payable","outputs":[],"name":"lockByNative","inputs":[{"type":"address","name":"_token","internalType":"address"},{"type":"uint256","name":"_amount","internalType":"uint256"},{"type":"uint256","name":"_unlockTime","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"lockFee","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"lockFeeLp","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"lockerCountOf","inputs":[{"type":"address","name":"_owner","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"tuple[]","name":"","internalType":"struct Lockup.LOCKER[]","components":[{"type":"uint256","name":"id","internalType":"uint256"},{"type":"address","name":"token","internalType":"address"},{"type":"address","name":"owner","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"},{"type":"uint256","name":"unlockTime","internalType":"uint256"}]}],"name":"lockersOf","inputs":[{"type":"address","name":"_owner","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"owner","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"renounceOwnership","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"setLockFee","inputs":[{"type":"uint256","name":"_lockFee","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"setLockFeeLp","inputs":[{"type":"uint256","name":"_lockFeeLp","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"transferOwnership","inputs":[{"type":"address","name":"newOwner","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"unlock","inputs":[{"type":"uint256","name":"_id","internalType":"uint256"},{"type":"uint256","name":"_amount","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"withdraw","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"withdrawLp","inputs":[{"type":"address","name":"_tokenAddr","internalType":"address"}]}]
            

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