Contract 0x042F9F08A3B7aB93a4008927CbEcBC3a32c962d3

//SPDX-License-Identifier: MIT
pragma solidity 0.5.17;

import "./LendingDistributionRewards.sol";

contract LendingDistributionFactory is Ownable {
	// immutables
	address public rewardsToken;
	uint256 public stakingRewardsGenesis;
	address public registry;

	// the staking tokens for which the rewards contract has been deployed
	address[] public stakingTokens;

	// info about rewards for a particular staking token
	struct StakingRewardsInfo {
		address stakingRewards;
		uint256 rewardAmount;
		uint256 endTime;
	}

	// rewards info by staking token
	mapping(address => StakingRewardsInfo)
		public stakingRewardsInfoByStakingToken;

	constructor(
		address _rewardsToken,
		uint256 _stakingRewardsGenesis,
		address _registry
	) public Ownable() {
		require(
			_stakingRewardsGenesis >= block.timestamp,
			"StakingRewardsFactory::constructor: genesis too soon"
		);
		require(
			_rewardsToken != address(0),
			"rewards tokend cannot be zero address"
		);
		rewardsToken = _rewardsToken;
		stakingRewardsGenesis = _stakingRewardsGenesis;
		registry = _registry;
	}

	///// permissioned functions

	// deploy a staking reward contract for the staking token, and store the reward amount
	// the reward will be distributed to the staking reward contract no sooner than the genesis
	function deploy(
		address stakingToken,
		uint256 rewardAmount,
		uint256 endTime
	) public onlyOwner {
		StakingRewardsInfo storage info = stakingRewardsInfoByStakingToken[
			stakingToken
		];
		require(
			info.stakingRewards == address(0),
			"StakingRewardsFactory::deploy: already deployed"
		);

		info.stakingRewards = address(
			new LendingDistributionRewards(
				/*_rewardsDistribution=*/
				address(this),
				rewardsToken,
				registry,
				owner()
			)
		);
		info.rewardAmount = rewardAmount;
		info.endTime = endTime;
		stakingTokens.push(stakingToken);
	}

	///// permissionless functions

	// updates the rerward amount and endTime for the distribution contract
	function updateRewards(
		address stakingToken,
		uint256 rewardAmount,
		uint256 endTime
	) public onlyOwner {
		require(
			stakingToken != address(0),
			"staking tokend cannot be zero address"
		);
		StakingRewardsInfo storage info = stakingRewardsInfoByStakingToken[
			stakingToken
		];
		info.rewardAmount = rewardAmount;
		info.endTime = endTime;
	}

	// call notifyRewardAmount for all staking tokens.
	function notifyRewardAmounts() public {
		require(
			stakingTokens.length > 0,
			"StakingRewardsFactory::notifyRewardAmounts: called before any deploys"
		);
		for (uint256 i = 0; i < stakingTokens.length; i++) {
			notifyRewardAmount(stakingTokens[i]);
		}
	}

	// notify reward amount for an individual staking token.
	// this is a fallback in case the notifyRewardAmounts costs too much gas to call for all contracts
	function notifyRewardAmount(address stakingToken) public {
		require(
			block.timestamp >= stakingRewardsGenesis,
			"StakingRewardsFactory::notifyRewardAmount: not ready"
		);

		StakingRewardsInfo storage info = stakingRewardsInfoByStakingToken[
			stakingToken
		];
		require(
			info.stakingRewards != address(0),
			"StakingRewardsFactory::notifyRewardAmount: not deployed"
		);

		if (info.rewardAmount > 0) {
			uint256 rewardAmount = info.rewardAmount;
			info.rewardAmount = 0;

			require(
				IERC20(rewardsToken).transfer(
					info.stakingRewards,
					rewardAmount
				),
				"StakingRewardsFactory::notifyRewardAmount: transfer failed"
			);
			LendingDistributionRewards(info.stakingRewards).notifyRewardAmount(
				rewardAmount,
				info.endTime
			);
		}
	}

	function sweep(
		address recipient,
		address erc20,
		uint256 transferAmount
	) public onlyOwner {
		require(recipient != address(0), "CANNOT TRANSFER TO ZERO ADDRESS");
		require(transferAmount > 0, "TRANSFER AMOUNT 0");
		require(
			IERC20(erc20).transfer(recipient, transferAmount),
			"StakingRewardsFactory::sweep: transfer failed"
		);
	}
}

//SPDX-License-Identifier: MIT
pragma solidity 0.5.17;

interface IRegistry {
	function logic(address logicAddr) external view returns (bool);

	function implementation(bytes32 key) external view returns (address);

	function notAllowed(address erc20) external view returns (bool);

	function deployWallet() external returns (address);

	function wallets(address user) external view returns (address);

	function walletRegistered(address wallet) external view returns (bool);

	function distributionContract(address token)
		external
		view
		returns (address);
}

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

/**
 * @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 aplied to your functions to restrict their use to
 * the owner.
 */
contract Ownable {
	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 = msg.sender;
		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 msg.sender == _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;
	}
}

/**
 * @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) {
		require(b <= a, "SafeMath: subtraction overflow");
		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-solidity/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) {
		// Solidity only automatically asserts when dividing by 0
		require(b > 0, "SafeMath: division by zero");
		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) {
		require(b != 0, "SafeMath: modulo by zero");
		return a % b;
	}
}

/**
 * @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);
	}
}

/**
 * @dev Optional functions from the ERC20 standard.
 */
contract ERC20Detailed is IERC20 {
	string private _name;
	string private _symbol;
	uint8 private _decimals;

	/**
	 * @dev Sets the values for `name`, `symbol`, and `decimals`. All three of
	 * these values are immutable: they can only be set once during
	 * construction.
	 */
	constructor(
		string memory name,
		string memory symbol,
		uint8 decimals
	) public {
		_name = name;
		_symbol = symbol;
		_decimals = decimals;
	}

	/**
	 * @dev Returns the name of the token.
	 */
	function name() public view returns (string memory) {
		return _name;
	}

	/**
	 * @dev Returns the symbol of the token, usually a shorter version of the
	 * name.
	 */
	function symbol() public view returns (string memory) {
		return _symbol;
	}

	/**
	 * @dev Returns the number of decimals used to get its user representation.
	 * For example, if `decimals` equals `2`, a balance of `505` tokens should
	 * be displayed to a user as `5,05` (`505 / 10 ** 2`).
	 *
	 * Tokens usually opt for a value of 18, imitating the relationship between
	 * Ether and Wei.
	 *
	 * > Note that this information is only used for _display_ purposes: it in
	 * no way affects any of the arithmetic of the contract, including
	 * `IERC20.balanceOf` and `IERC20.transfer`.
	 */
	function decimals() public view returns (uint8) {
		return _decimals;
	}
}

/**
 * @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.
	 *
	 * > 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.

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

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the `nonReentrant` modifier
 * available, which can be aplied 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.
 */
contract ReentrancyGuard {
	/// @dev counter to allow mutex lock with only one SSTORE operation
	uint256 private _guardCounter;

	constructor() internal {
		// The counter starts at one to prevent changing it from zero to a non-zero
		// value, which is a more expensive operation.
		_guardCounter = 1;
	}

	/**
	 * @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 make it call a
	 * `private` function that does the actual work.
	 */
	modifier nonReentrant() {
		_guardCounter += 1;
		uint256 localCounter = _guardCounter;
		_;
		require(
			localCounter == _guardCounter,
			"ReentrancyGuard: reentrant call"
		);
	}
}

// Inheritance
interface IStakingRewards {
	// Views
	function lastTimeRewardApplicable() external view returns (uint256);

	function rewardPerToken() external view returns (uint256);

	function earned(address account) external view returns (uint256);

	function getRewardForDuration() external view returns (uint256);

	function totalSupply() external view returns (uint256);

	function balanceOf(address account) external view returns (uint256);

	// Mutative

	function stake(uint256 amount) external;

	function withdraw(uint256 amount) external;

	function getReward(address user) external;

	// function exit(address user) external;
}

contract RewardsDistributionRecipient {
	address public rewardsDistribution;

	function notifyRewardAmount(uint256 reward, uint256 endTime) external;

	modifier onlyRewardsDistribution() {
		require(
			msg.sender == rewardsDistribution,
			"Caller is not RewardsDistribution contract"
		);
		_;
	}
}

contract LendingDistributionRewards is
	IStakingRewards,
	RewardsDistributionRecipient,
	ReentrancyGuard
{
	using SafeMath for uint256;
	using SafeERC20 for IERC20;

	/* ========== STATE VARIABLES ========== */

	IERC20 public rewardsToken;
	uint256 public periodFinish = 0;
	uint256 public rewardRate = 0;
	uint256 public rewardsDuration = 0;
	uint256 public lastUpdateTime;
	uint256 public rewardPerTokenStored;

	mapping(address => uint256) public userRewardPerTokenPaid;
	mapping(address => uint256) public rewards;

	uint256 private _totalSupply;
	mapping(address => uint256) private _balances;
	address public registry;
	address public owner;

	/* ========== CONSTRUCTOR ========== */

	constructor(
		address _rewardsDistribution,
		address _rewardsToken,
		address _registry,
		address _owner
	) public {
		rewardsToken = IERC20(_rewardsToken);
		rewardsDistribution = _rewardsDistribution;
		registry = _registry;
		owner = _owner;
	}

	/* ========== VIEWS ========== */

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

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

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

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

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

	function getRewardForDuration() external view returns (uint256) {
		return rewardRate.mul(rewardsDuration);
	}

	function stake(uint256 amount)
		external
		nonReentrant
		updateReward(msg.sender)
	{
		require(amount > 0, "Cannot stake 0");
		require(
			IRegistry(registry).walletRegistered(msg.sender) == true,
			"Invalid Access: Can only be accessed by ETHA wallets"
		);
		_totalSupply = _totalSupply.add(amount);
		_balances[msg.sender] = _balances[msg.sender].add(amount);
		emit Staked(msg.sender, amount);
	}

	function withdraw(uint256 amount)
		public
		nonReentrant
		updateReward(msg.sender)
	{
		require(amount > 0, "Cannot withdraw 0");
		require(
			IRegistry(registry).walletRegistered(msg.sender) == true,
			"Invalid Access: Can only be accessed by ETHA wallets"
		);
		_totalSupply = _totalSupply.sub(amount);
		_balances[msg.sender] = _balances[msg.sender].sub(amount);
		emit Withdrawn(msg.sender, amount);
	}

	function getReward(address user) public nonReentrant updateReward(user) {
		uint256 reward = rewards[user];
		if (reward > 0) {
			rewards[user] = 0;
			rewardsToken.safeTransfer(user, reward);
			emit RewardPaid(user, reward);
		}
	}

	/* ========== RESTRICTED FUNCTIONS ========== */

	function notifyRewardAmount(uint256 reward, uint256 endTime)
		external
		onlyRewardsDistribution
		updateReward(address(0))
	{
		rewardsDuration = endTime.sub(block.timestamp);
		if (block.timestamp >= periodFinish) {
			rewardRate = reward.div(rewardsDuration);
		} else {
			uint256 remaining = periodFinish.sub(block.timestamp);
			uint256 leftover = remaining.mul(rewardRate);
			rewardRate = reward.add(leftover).div(rewardsDuration);
		}

		// Ensure the provided reward amount is not more than the balance in the contract.
		// This keeps the reward rate in the right range, preventing overflows due to
		// very high values of rewardRate in the earned and rewardsPerToken functions;
		// Reward + leftover must be less than 2^256 / 10^18 to avoid overflow.
		uint256 balance = rewardsToken.balanceOf(address(this));
		require(
			rewardRate <= balance.div(rewardsDuration),
			"Provided reward too high"
		);

		lastUpdateTime = block.timestamp;
		periodFinish = endTime;
		emit RewardAdded(reward);
	}

	function sweep(
		address recipient,
		address erc20,
		uint256 transferAmount
	) public {
		require(msg.sender == owner, "INVALID ACCESS");
		require(recipient != address(0), "CANNOT TRANSFER TO ZERO ADDRESS");
		require(transferAmount > 0, "TRANSFER AMOUNT 0");
		require(
			IERC20(erc20).transfer(recipient, transferAmount),
			"LendingDistrubution::sweep: transfer failed"
		);
	}

	/* ========== MODIFIERS ========== */

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

	/* ========== EVENTS ========== */

	event RewardAdded(uint256 reward);
	event Staked(address indexed user, uint256 amount);
	event Withdrawn(address indexed user, uint256 amount);
	event RewardPaid(address indexed user, uint256 reward);
}

{
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_rewardsToken","type":"address"},{"internalType":"uint256","name":"_stakingRewardsGenesis","type":"uint256"},{"internalType":"address","name":"_registry","type":"address"}],"payable":false,"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"},{"constant":false,"inputs":[{"internalType":"address","name":"stakingToken","type":"address"},{"internalType":"uint256","name":"rewardAmount","type":"uint256"},{"internalType":"uint256","name":"endTime","type":"uint256"}],"name":"deploy","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"isOwner","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"stakingToken","type":"address"}],"name":"notifyRewardAmount","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"notifyRewardAmounts","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"registry","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":"rewardsToken","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"stakingRewardsGenesis","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"stakingRewardsInfoByStakingToken","outputs":[{"internalType":"address","name":"stakingRewards","type":"address"},{"internalType":"uint256","name":"rewardAmount","type":"uint256"},{"internalType":"uint256","name":"endTime","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"stakingTokens","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"address","name":"erc20","type":"address"},{"internalType":"uint256","name":"transferAmount","type":"uint256"}],"name":"sweep","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":"stakingToken","type":"address"},{"internalType":"uint256","name":"rewardAmount","type":"uint256"},{"internalType":"uint256","name":"endTime","type":"uint256"}],"name":"updateRewards","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}]

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