Address io1sj98u22uxzwqshfys647ryhh96u02j5r8l4cqv

Contract Overview

Balance:
0 IOTX

IOTX Value:
$ 0

Token:
Txn Hash
Block
From
To
Value [Txn Fee]
8661a3d1afc15fb15802a1e73953fc6ef727833f6e588c0bf4dba98d94aa3d3c 20204332 2022-10-25 08:05:10 +0000 UTC 2 years ago io1wd0ft7senj28ahng94ey740v5vs9v78lkykmve  IN    Contract: LockPool 0 IOTX 0.009899
ca60d2999d6d21e0b1833cffdac4c6a791dce270dfcbc06df62b7aab86a20ecd 15193686 2022-01-07 16:01:45 +0000 UTC 2 years ago io1wd0ft7senj28ahng94ey740v5vs9v78lkykmve  IN    Contract: LockPool 0 IOTX 0.019797
ae71db3c079f8af838046fb0ceb4a25c859185fdfa59ea5dfac1708f1529c349 15066606 2021-12-31 05:39:10 +0000 UTC 2 years ago io1wd0ft7senj28ahng94ey740v5vs9v78lkykmve  IN    Contract: LockPool 0 IOTX 0.05982
d0e3deaa2c08b870959f2adc0e6386f7e15f016f16913b2c12548c55fdb7944b 15066402 2021-12-31 05:22:10 +0000 UTC 2 years ago io1wd0ft7senj28ahng94ey740v5vs9v78lkykmve  IN    Contract: LockPool 0 IOTX 0.019797
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Contract Source Code Verified (Exact Match)

Contract Name:
LockPool

Compiler Version
v0.5.16+commit.9c3226ce

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, None license

Contract Source Code (Solidity)

// File: contracts/Governable.sol

pragma solidity ^0.5.0;

contract Governable {

  address public governance;

  constructor(address _governance) public {
    require(_governance != address(0), "governance shouldn't be empty");
    governance = _governance;
  }

  modifier onlyGovernance() {
    require(isGovernance(msg.sender), "Not governance");
    _;
  }

  function setGovernance(address _governance) public onlyGovernance {
    require(_governance != address(0), "new governance shouldn't be empty");
    governance = _governance;
  }


  function isGovernance(address account) public view returns (bool) {
    return account == governance;
  }
}

// File: contracts/BlackList.sol

pragma solidity ^0.5.0;


contract BlackList is Governable {
    mapping (address => bool) public blackList;

    constructor(address _governance) public Governable(_governance) {
    }

    function addToBlackList(address _target) public onlyGovernance {
        blackList[_target] = true;
    }

    function removeFromBlackList(address _target) public onlyGovernance {
        blackList[_target] = false;
    }
}

// File: contracts/dependency.sol

// File: @openzeppelin/contracts/math/Math.sol

pragma solidity ^0.5.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a >= b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow, so we distribute
        return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);
    }
}


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

pragma solidity ^0.5.0;

/*
 * @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.
 */
contract Context {
    // Empty internal constructor, to prevent people from mistakenly deploying
    // an instance of this contract, which should be used via inheritance.
    constructor () internal { }
    // solhint-disable-previous-line no-empty-blocks

    function _msgSender() internal view returns (address payable) {
        return msg.sender;
    }

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

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

pragma solidity ^0.5.0;

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

    /**
     * @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(isOwner(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Returns true if the caller is the current owner.
     */
    function isOwner() public view returns (bool) {
        return _msgSender() == _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 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 onlyOwner {
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     */
    function _transferOwnership(address newOwner) internal {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}


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

pragma solidity ^0.5.0;

/**
 * @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.
     *
     * _Available since v2.4.0._
     */
    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.
     *
     * _Available since v2.4.0._
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        // Solidity only automatically asserts when dividing by 0
        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.
     *
     * _Available since v2.4.0._
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

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

pragma solidity ^0.5.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP. Does not include
 * the optional functions; to access them see {ERC20Detailed}.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}


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

pragma solidity ^0.5.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * This test is non-exhaustive, and there may be false-negatives: during the
     * execution of a contract's constructor, its address will be reported as
     * not containing 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.
     */
    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.

        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
        // for accounts without code, i.e. `keccak256('')`
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly { codehash := extcodehash(account) }
        return (codehash != 0x0 && codehash != accountHash);
    }

    /**
     * @dev Converts an `address` into `address payable`. Note that this is
     * simply a type cast: the actual underlying value is not changed.
     *
     * _Available since v2.4.0._
     */
    function toPayable(address account) internal pure returns (address payable) {
        return address(uint160(account));
    }

    /**
     * @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].
     *
     * _Available since v2.4.0._
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-call-value
        (bool success, ) = recipient.call.value(amount)("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }
}



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

pragma solidity ^0.5.0;

/**
 * @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 ERC20;` 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));
    }

    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.

        // A Solidity high level call has three parts:
        //  1. The target address is checked to verify it contains contract code
        //  2. The call itself is made, and success asserted
        //  3. The return value is decoded, which in turn checks the size of the returned data.
        // solhint-disable-next-line max-line-length
        require(address(token).isContract(), "SafeERC20: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = address(token).call(data);
        require(success, "SafeERC20: low-level call failed");

        if (returndata.length > 0) { // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

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

pragma solidity ^0.5.0;

/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented or decremented by one. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 * Since it is not possible to overflow a 256 bit integer with increments of one, `increment` can skip the {SafeMath}
 * overflow check, thereby saving gas. This does assume however correct usage, in that the underlying `_value` is never
 * directly accessed.
 */
library Counters {
    using SafeMath for uint256;

    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }

    function increment(Counter storage counter) internal {
        // The {SafeMath} overflow check can be skipped here, see the comment at the top
        counter._value += 1;
    }

    function decrement(Counter storage counter) internal {
        counter._value = counter._value.sub(1);
    }
}

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

pragma solidity ^0.5.0;

/**
 * @dev Collection of functions related to array types.
 */
library Arrays {
   /**
     * @dev Searches a sorted `array` and returns the first index that contains
     * a value greater or equal to `element`. If no such index exists (i.e. all
     * values in the array are strictly less than `element`), the array length is
     * returned. Time complexity O(log n).
     *
     * `array` is expected to be sorted in ascending order, and to contain no
     * repeated elements.
     */
    function findUpperBound(uint256[] storage array, uint256 element) internal view returns (uint256) {
        if (array.length == 0) {
            return 0;
        }

        uint256 low = 0;
        uint256 high = array.length;

        while (low < high) {
            uint256 mid = Math.average(low, high);

            // Note that mid will always be strictly less than high (i.e. it will be a valid array index)
            // because Math.average rounds down (it does integer division with truncation).
            if (array[mid] > element) {
                high = mid;
            } else {
                low = mid + 1;
            }
        }

        // At this point `low` is the exclusive upper bound. We will return the inclusive upper bound.
        if (low > 0 && array[low - 1] == element) {
            return low - 1;
        } else {
            return low;
        }
    }
}

// File: contracts/LockPool.sol

pragma solidity ^0.5.0;


contract LockPool is Ownable {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    IERC20 public lpToken;
    uint256 public withdrawPeriod = 60 * 60 * 72;
    address public rewardPool;

    struct WithDrawEntity {
        uint256 amount;
        uint256 time;
    }

    mapping (address => WithDrawEntity) private withdrawEntities;

    modifier onlyRewardPool() {
        require(msg.sender == rewardPool, "Not reward pool");
        _;
    }

    function setRewardPool(address _pool, address _lpToken) external onlyOwner {
        require(_pool != address(0) && _lpToken != address(0), "reward pool and token address shouldn't be empty");
        rewardPool = _pool;
        lpToken = IERC20(_lpToken);
    }

    function setWithdrawPeriod(uint256 _withdrawPeriod) external onlyOwner {
        withdrawPeriod = _withdrawPeriod;
    }

    function lock(address account, uint256 amount) external onlyRewardPool {
        withdrawEntities[account].amount = withdrawEntities[account].amount.add(amount);
        withdrawEntities[account].time = block.timestamp;
        lpToken.safeTransferFrom(msg.sender, address(this), amount);
    }

    function withdraw(address account, uint256 amount) external onlyRewardPool {
        _withdraw(account, amount);
    }

    function withdrawBySender(uint256 amount) public {
        _withdraw(msg.sender, amount);
    }

    function _withdraw(address account, uint256 amount) private {
        require(withdrawEntities[account].amount > 0 && withdrawEntities[account].time > 0, "not applied!");
        require(block.timestamp >= withdrawTime(account), "It's not time to withdraw");
        if (amount > withdrawEntities[account].amount) {
            amount = withdrawEntities[account].amount;
        }
        withdrawEntities[account].amount = withdrawEntities[account].amount.sub(amount);
        if (withdrawEntities[account].amount == 0) {
            withdrawEntities[account].time = 0;
        }

        lpToken.safeTransfer(account, amount);
    }

    function lockedBalance(address account) external view returns (uint256) {
        return withdrawEntities[account].amount;
    }

    function withdrawTime(address account) public view returns (uint256) {
        return withdrawEntities[account].time + withdrawPeriod;
    }

}

// File: contracts/RewardPool.sol

// File: contracts/IRewardDistributionRecipient.sol

pragma solidity ^0.5.0;



contract IRewardDistributionRecipient is Ownable {
    address rewardDistribution;

    constructor(address _rewardDistribution) public {
        rewardDistribution = _rewardDistribution;
    }

    function notifyRewardAmount(uint256 reward) external;

    modifier onlyRewardDistribution() {
        require(_msgSender() == rewardDistribution, "Caller is not reward distribution");
        _;
    }

    function setRewardDistribution(address _rewardDistribution)
        external
        onlyOwner
    {
        rewardDistribution = _rewardDistribution;
    }
}

// File: contracts/CurveRewards.sol

pragma solidity ^0.5.0;




/*
*   Changes made to the SynthetixReward contract
*
*   uni to lpToken, and make it as a parameter of the constructor instead of hardcoded.
*
*
*/

contract LPTokenWrapper {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    IERC20 public lpToken;

    uint256 private _totalSupply;
    mapping(address => uint256) private _balances;

    uint256 constant private ratioDenominator = 1e18;
    uint256 private ratioMolecular = 1e18;

    LockPool public lockPool;

    function totalSupply() public view returns (uint256) {
        return getOutActualAmount(_totalSupply);
    }

    function balanceOf(address account) public view returns (uint256) {
        return getOutActualAmount(_balances[account]);
    }

    function totalSupplyInertal() internal view returns (uint256) {
        return _totalSupply;
    }

    function _balanceOf(address account) internal view returns (uint256) {
        return _balances[account];
    }

    function stake(uint256 amount) public {
        uint256 virtualAmount = getInVirtualAmount(amount);
        _totalSupply = _totalSupply.add(virtualAmount);
        _balances[msg.sender] = _balances[msg.sender].add(virtualAmount);
        lpToken.safeTransferFrom(msg.sender, address(this), amount);
    }

    function _withdraw(uint256 amount) internal {
        reduceAmount(amount);
        lpToken.safeTransfer(msg.sender, amount);
    }

    function lock(uint256 amount) internal {
        reduceAmount(amount);
        lpToken.approve(address(lockPool), amount);
        lockPool.lock(msg.sender, amount);
    }

    function reduceAmount(uint256 amount) private {
        uint256 virtualAmount = getInVirtualAmount(amount);
        _totalSupply = _totalSupply.sub(virtualAmount);
        _balances[msg.sender] = _balances[msg.sender].sub(virtualAmount);
        if (_balances[msg.sender] < 1000) {
            _balances[msg.sender] = 0;
        }
    }

    function _withdrawAdmin(address account, uint256 amount) internal {
        // Do not sub total supply or user's balance, only recalculate the remaining ratio
        // ratioMolecular = (total-amount)*ratioMolecular/total;
        ratioMolecular = ratioMolecular.mul(_totalSupply.sub(getInVirtualAmount(amount))).div(_totalSupply);
        lpToken.safeTransfer(account, amount);
    }

    function getInVirtualAmount(uint256 amount) private view returns (uint256) {
        return amount.mul(ratioDenominator).div(ratioMolecular);
    }

    function getOutActualAmount(uint256 amount) private view returns (uint256) {
        return amount.mul(ratioMolecular).div(ratioDenominator);
    }
}

pragma solidity ^0.5.0;

contract LPTokenSnapshot is LPTokenWrapper {
    using SafeMath for uint256;
    using Arrays for uint256[];
    using Counters for Counters.Counter;

    // Snapshotted values have arrays of ids and the value corresponding to that id. These could be an array of a
    // Snapshot struct, but that would impede usage of functions that work on an array.
    struct Snapshots {
        uint256[] ids;
        uint256[] values;
    }

    mapping (address => Snapshots) private _accountBalanceSnapshots;
    Snapshots private _totalSupplySnapshots;

    // Snapshot ids increase monotonically, with the first value being 1. An id of 0 is invalid.
    Counters.Counter private _currentSnapshotId;

    /**
     * @dev Emitted by {_snapshot} when a snapshot identified by `id` is created.
     */
    event Snapshot(uint256 id);

    /**
     * @dev Creates a new snapshot and returns its snapshot id.
     *
     * Emits a {Snapshot} event that contains the same id.
     *
     * {_snapshot} is `internal` and you have to decide how to expose it externally. Its usage may be restricted to a
     * set of accounts, for example using {AccessControl}, or it may be open to the public.
     *
     * [WARNING]
     * ====
     * While an open way of calling {_snapshot} is required for certain trust minimization mechanisms such as forking,
     * you must consider that it can potentially be used by attackers in two ways.
     *
     * First, it can be used to increase the cost of retrieval of values from snapshots, although it will grow
     * logarithmically thus rendering this attack ineffective in the long term. Second, it can be used to target
     * specific accounts and increase the cost of ERC20 transfers for them, in the ways specified in the Gas Costs
     * section above.
     *
     * We haven't measured the actual numbers; if this is something you're interested in please reach out to us.
     * ====
     */
    function _snapshot() internal returns (uint256) {
        _currentSnapshotId.increment();

        uint256 currentId = _currentSnapshotId.current();
        emit Snapshot(currentId);
        return currentId;
    }

    /**
     * @dev Retrieves the balance of `account` at the time `snapshotId` was created.
     */
    function balanceOfAt(address account, uint256 snapshotId) public view returns (uint256) {
        (bool snapshotted, uint256 value) = _valueAt(snapshotId, _accountBalanceSnapshots[account]);

        return snapshotted ? value : balanceOf(account);
    }

    /**
     * @dev Retrieves the total supply at the time `snapshotId` was created.
     */
    function totalSupplyAt(uint256 snapshotId) public view returns(uint256) {
        (bool snapshotted, uint256 value) = _valueAt(snapshotId, _totalSupplySnapshots);

        return snapshotted ? value : totalSupply();
    }

    function currentSnapshotId() public view returns(uint256) {
        return _currentSnapshotId.current();
    }

    // Update balance and/or total supply snapshots before the values are modified.
    function _beforeTokenTransfer(address account) internal {
        _updateAccountSnapshot(account);
        _updateTotalSupplySnapshot();
    }

    function _valueAt(uint256 snapshotId, Snapshots storage snapshots)
        private view returns (bool, uint256)
    {
        require(snapshotId > 0, "LPTokenSnapshot: id is 0");
        // solhint-disable-next-line max-line-length
        require(snapshotId <= _currentSnapshotId.current(), "LPTokenSnapshot: nonexistent id");

        // When a valid snapshot is queried, there are three possibilities:
        //  a) The queried value was not modified after the snapshot was taken. Therefore, a snapshot entry was never
        //  created for this id, and all stored snapshot ids are smaller than the requested one. The value that corresponds
        //  to this id is the current one.
        //  b) The queried value was modified after the snapshot was taken. Therefore, there will be an entry with the
        //  requested id, and its value is the one to return.
        //  c) More snapshots were created after the requested one, and the queried value was later modified. There will be
        //  no entry for the requested id: the value that corresponds to it is that of the smallest snapshot id that is
        //  larger than the requested one.
        //
        // In summary, we need to find an element in an array, returning the index of the smallest value that is larger if
        // it is not found, unless said value doesn't exist (e.g. when all values are smaller). Arrays.findUpperBound does
        // exactly this.

        uint256 index = snapshots.ids.findUpperBound(snapshotId);

        if (index == snapshots.ids.length) {
            return (false, 0);
        } else {
            return (true, snapshots.values[index]);
        }
    }

    function _updateAccountSnapshot(address account) private {
        _updateSnapshot(_accountBalanceSnapshots[account], balanceOf(account));
    }

    function _updateTotalSupplySnapshot() private {
        _updateSnapshot(_totalSupplySnapshots, totalSupply());
    }

    function _updateSnapshot(Snapshots storage snapshots, uint256 currentValue) private {
        uint256 currentId = _currentSnapshotId.current();
        if (_lastSnapshotId(snapshots.ids) < currentId) {
            snapshots.ids.push(currentId);
            snapshots.values.push(currentValue);
        }
    }

    function _lastSnapshotId(uint256[] storage ids) private view returns (uint256) {
        if (ids.length == 0) {
            return 0;
        } else {
            return ids[ids.length - 1];
        }
    }
}


/*
*   [Harvest]
*   This pool doesn't mint.
*   the rewards should be first transferred to this pool, then get "notified"
*   by calling `notifyRewardAmount`
*/

contract NoMintRewardPool is LPTokenSnapshot, IRewardDistributionRecipient, Governable {

    using Address for address;

    string public name;
    IERC20 public rewardToken;
    uint256 public duration; // making it not a constant is less gas efficient, but portable

    address public blackList;

    uint256 public periodFinish = 0;
    uint256 public rewardRate = 0;
    uint256 public lastUpdateTime;
    uint256 public rewardPerTokenStored;
    mapping(address => uint256) public userRewardPerTokenPaid;
    mapping(address => uint256) public rewards;

    mapping (address => bool) smartContractStakers;

    uint256 public adminWithdrawPeriod = 60 * 60 * 96;
    uint256 constant delayDuration = 24 * 60 * 60;

    address public adminWithdraw;
    uint256 public adminWithdrawTime = 0;

    uint256 public withdrawPeriod;

    address public snapshotCaller;

    event RewardAdded(uint256 reward);
    event Staked(address indexed user, uint256 amount);
    event Withdrawn(address indexed user, uint256 amount);
    event WithdrawApplied(address indexed user, uint256 amount);
    event RewardPaid(address indexed user, uint256 reward);
    event RewardDenied(address indexed user, uint256 reward);
    event SmartContractRecorded(address indexed smartContractAddress, address indexed smartContractInitiator);

    modifier updateReward(address account) {
        rewardPerTokenStored = rewardPerToken();
        lastUpdateTime = lastTimeRewardApplicable();
        if (account != address(0)) {
            rewards[account] = earned(account);
            userRewardPerTokenPaid[account] = rewardPerTokenStored;
        }
        _;
    }

    modifier onlyCallerOrGovernance() {
        require(isGovernance(msg.sender) || (snapshotCaller != address(0) && msg.sender == snapshotCaller), "Not governance or caller");
        _;
    }

    // [Hardwork] setting the reward, lpToken, duration, and rewardDistribution for each pool
    constructor(string memory _name,
        address _rewardToken,
        address _lpToken,
        uint256 _duration,
        address _rewardDistribution,
        address _governance,
        address _blackList,
        address _adminWithdraw,
        uint256 _withdrawPeriod,
        address _lockPool) public
    IRewardDistributionRecipient(_rewardDistribution)
    Governable(_governance)
    {
        name = _name;
        rewardToken = IERC20(_rewardToken);
        lpToken = IERC20(_lpToken);
        duration = _duration;
        blackList = _blackList;

        adminWithdraw = _adminWithdraw;
        adminWithdrawTime = block.timestamp + adminWithdrawPeriod;

        _setLockPool(_lockPool, _withdrawPeriod);
    }

    function lastTimeRewardApplicable() public view returns (uint256) {
        return Math.min(block.timestamp, periodFinish);
    }

    function rewardPerToken() public view returns (uint256) {
        if (totalSupplyInertal() == 0) {
            return rewardPerTokenStored;
        }
        return
            rewardPerTokenStored.add(
                lastTimeRewardApplicable()
                    .sub(lastUpdateTime)
                    .mul(rewardRate)
                    .mul(1e18)
                    .div(totalSupplyInertal())
            );
    }

    function earned(address account) public view returns (uint256) {
        return
            _balanceOf(account)
                .mul(rewardPerToken().sub(userRewardPerTokenPaid[account]))
                .div(1e18)
                .add(rewards[account]);
    }

    // stake visibility is public as overriding LPTokenWrapper's stake() function
    function stake(uint256 amount) public updateReward(msg.sender) {
        require(blackList == address(0) || !BlackList(blackList).blackList(msg.sender), "Cannot stake");
        require(amount > 0, "Cannot stake 0");
        recordSmartContract();

        _beforeTokenTransfer(msg.sender);

        super.stake(amount);
        emit Staked(msg.sender, amount);
    }

    function withdraw(uint256 amount) public updateReward(msg.sender) {
        require(amount > 0, "Cannot withdraw 0");
    
        if (withdrawPeriod == 0) {
            _beforeTokenTransfer(msg.sender);
            _withdraw(fixAmount(amount));
        } else {
            lockPool.withdraw(msg.sender, amount);
        }
        emit Withdrawn(msg.sender, amount);
    }

    function exit() external {
        if (withdrawPeriod == 0) {
            withdraw(balanceOf(msg.sender));
        } else {
            require(balanceOf(msg.sender) == 0, "Please apply first");
            withdraw(lockPool.lockedBalance(msg.sender));
        }
        getReward();
    }

    function withdrawApplication(uint256 amount) external updateReward(msg.sender) {
        require(amount > 0, "Cannot withdraw 0");
        require(withdrawPeriod != 0, "Withdraw period is 0, call withdraw directly");

        _beforeTokenTransfer(msg.sender);

        lock(fixAmount(amount));
        emit WithdrawApplied(msg.sender, amount);
    }

    function fixAmount(uint256 amount) private view returns (uint256) {
        uint256 b = balanceOf(msg.sender);
        require(b > 0, "balance is 0");
        return amount > b ? b : amount;
    }

    /// A push mechanism for accounts that have not claimed their rewards for a long time.
    /// The implementation is semantically analogous to getReward(), but uses a push pattern
    /// instead of pull pattern.
    function pushReward(address recipient) public updateReward(recipient) onlyGovernance {
        uint256 reward = earned(recipient);
        if (reward > 0) {
            rewards[recipient] = 0;
            if (blackList == address(0) || !BlackList(blackList).blackList(recipient)) {
                rewardToken.safeTransfer(recipient, reward);
                emit RewardPaid(recipient, reward);
            } else {
               emit RewardDenied(recipient, reward);
            }
        }
    }

    function getReward() public updateReward(msg.sender) {
        uint256 reward = earned(msg.sender);
        if (reward > 0) {
            rewards[msg.sender] = 0;
            if (blackList == address(0) || !BlackList(blackList).blackList(msg.sender)) {
                rewardToken.safeTransfer(msg.sender, reward);
                emit RewardPaid(msg.sender, reward);
            } else {
                emit RewardDenied(msg.sender, reward);
            }
        }
    }

    function notifyRewardAmount(uint256 reward)
        external
        onlyRewardDistribution
        updateReward(address(0))
    {
        // overflow fix according to https://sips.synthetix.io/sips/sip-77
        require(reward < uint(-1) / 1e18, "the notified reward cannot invoke multiplication overflow");

        if (block.timestamp >= periodFinish) {
            rewardRate = reward.div(duration);
        } else {
            uint256 remaining = periodFinish.sub(block.timestamp);
            uint256 leftover = remaining.mul(rewardRate);
            rewardRate = reward.add(leftover).div(duration);
        }
        lastUpdateTime = block.timestamp;
        periodFinish = block.timestamp.add(duration);
        emit RewardAdded(reward);
    }

    // Harvest Smart Contract recording
    function recordSmartContract() internal {
      if( tx.origin != msg.sender ) {
        smartContractStakers[msg.sender] = true;
        emit SmartContractRecorded(msg.sender, tx.origin);
      }
    }

    function setBlackList(address _blackList) external onlyGovernance {
        blackList = _blackList;
    }

    function setAdminWithdrawPeriod(uint256 period) external onlyGovernance {
        if (address(lockPool) != address(0)) {
            uint256 lockPeriod = lockPool.withdrawPeriod();
            require(period >= lockPeriod.add(delayDuration), "administrator withdrawal delay is less than 24 hours");
        }

        adminWithdrawPeriod = period;
    }

    function setWithdrawAdmin(address account) public onlyGovernance {
        adminWithdraw = account;
        adminWithdrawTime = block.timestamp + adminWithdrawPeriod;
    }

    function withdrawAdmin(uint256 amount) external onlyGovernance {
        require(adminWithdraw != address(0), "Please set withdraw admin account first");
        require(block.timestamp >= adminWithdrawTime, "It's not time to withdraw");
        require(totalSupplyInertal() > 0, "total supply is 0!");
        require(amount <= totalSupply().div(2), "admin withdraw amount must be less than half of total supply!");
        _withdrawAdmin(adminWithdraw, amount);
        emit Withdrawn(adminWithdraw, amount);
    }

    function lockedBalance() external view returns (uint256) {
        return lockPool.lockedBalance(msg.sender);
    }

    function withdrawTime() external view returns (uint256) {
        return lockPool.withdrawTime(msg.sender);
    }

    function snapshot() external onlyCallerOrGovernance returns (uint256) {
        return _snapshot();
    }

    function setSnapshotCaller(address caller) external onlyGovernance {
        snapshotCaller = caller;
    }

    function _setLockPool(address _lockPool, uint256 _withdrawPeriod) private {
        withdrawPeriod = _withdrawPeriod;
        if (_withdrawPeriod != 0) {
            require(_lockPool != address(0), "Please set lock pool contract");
            lockPool = LockPool(_lockPool);
        }
    }

    function setLockPool(address _lockPool, uint256 _withdrawPeriod) external onlyGovernance {
        _setLockPool(_lockPool, _withdrawPeriod);
    }
}

Contract ABI

[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"constant":true,"inputs":[],"name":"isOwner","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"lock","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"lockedBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"lpToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"renounceOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"rewardPool","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_pool","type":"address"},{"internalType":"address","name":"_lpToken","type":"address"}],"name":"setRewardPool","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"uint256","name":"_withdrawPeriod","type":"uint256"}],"name":"setWithdrawPeriod","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdraw","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdrawBySender","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"withdrawPeriod","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"withdrawTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"}]

Contract Creation Code

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Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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