Contract 0xC3524bDB38CA27fc3F1c74D2E502e12392D82c3A

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @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);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @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, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        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) {
        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) {
        // 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) {
        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) {
        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) {
        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");
        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) {
        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, reverting 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) {
        require(b > 0, "SafeMath: division by zero");
        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) {
        require(b > 0, "SafeMath: modulo by zero");
        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) {
        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.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        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) {
        require(b > 0, errorMessage);
        return a % b;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <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 `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);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "./IERC20.sol";
import "../../math/SafeMath.sol";
import "../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using SafeMath for uint256;
    using Address for address;

    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        // solhint-disable-next-line max-line-length
        require((value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(value);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) { // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

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

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private 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

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <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 () internal {
        _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 make 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;
    }
}

pragma solidity ^0.6.2;

import "./Owned.sol";

abstract contract Failsafe is Owned {
    bool public failsafeModeActive = false;

    constructor() internal {
        require(owner != address(0), "Owner must be set");
    }

    function enableFailsafeMode() public virtual onlyOwner {
        failsafeModeActive = true;
        emit FailsafeModeEnabled();
    }

    event FailsafeModeEnabled();

    modifier normalMode {
        require(
            !failsafeModeActive,
            "This action cannot be performed while the contract is in Failsafe Mode"
        );
        _;
    }

    modifier failsafeMode {
        require(
            failsafeModeActive,
            "This action can only be performed while the contract is in Failsafe Mode"
        );
        _;
    }
}

pragma solidity ^0.6.2;

// https://docs.synthetix.io/contracts/source/contracts/owned
contract Owned {
    address public owner;
    address public nominatedOwner;

    constructor(address _owner) public {
        require(_owner != address(0), "Owner address cannot be 0");
        owner = _owner;
        emit OwnerChanged(address(0), _owner);
    }

    function nominateNewOwner(address _owner) external onlyOwner {
        nominatedOwner = _owner;
        emit OwnerNominated(_owner);
    }

    function acceptOwnership() external {
        require(
            msg.sender == nominatedOwner,
            "You must be nominated before you can accept ownership"
        );
        emit OwnerChanged(owner, nominatedOwner);
        owner = nominatedOwner;
        nominatedOwner = address(0);
    }

    modifier onlyOwner {
        _onlyOwner();
        _;
    }

    function _onlyOwner() private view {
        require(
            msg.sender == owner,
            "Only the contract owner may perform this action"
        );
    }

    event OwnerNominated(address newOwner);
    event OwnerChanged(address oldOwner, address newOwner);
}

pragma solidity ^0.6.2;

// Inheritance
import "./Owned.sol";

// https://docs.synthetix.io/contracts/source/contracts/rewardsdistributionrecipient
abstract contract RewardsDistributionRecipient is Owned {
    address public rewardsDistribution;

    function notifyRewardAmount(uint256 reward) external virtual;

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

    function setRewardsDistribution(address _rewardsDistribution)
        external
        onlyOwner
    {
        rewardsDistribution = _rewardsDistribution;
    }
}

pragma solidity ^0.6.2;

import "@openzeppelin/contracts/math/Math.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";
import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";
import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";

// Inheritance
import "./interfaces/IStakingRewards.sol";
import "./RewardsDistributionRecipient.sol";
import "./SynthetixPausable.sol";
import "./Failsafe.sol";

// https://docs.synthetix.io/contracts/source/contracts/stakingrewards
contract StakingRewards is
    IStakingRewards,
    RewardsDistributionRecipient,
    ReentrancyGuard,
    Failsafe,
    SynthetixPausable
{
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

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

    IERC20 public rewardsToken;
    IERC20 public stakingToken;
    uint256 public periodFinish = 0;
    uint256 public override rewardRate = 0;
    uint256 public override rewardsDuration = 180 days;
    uint256 public override minimumStakeAmount;
    uint256 public override minimumStakeTime;
    uint256 public lastUpdateTime;
    uint256 public rewardPerTokenStored;

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

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

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

    constructor(
        address _owner,
        address _rewardsDistribution,
        address _rewardsToken,
        address _stakingToken,
        uint256 _minimumStakeAmount,
        uint256 _minimumStakeTime
    ) public Owned(_owner) {
        rewardsToken = IERC20(_rewardsToken);
        stakingToken = IERC20(_stakingToken);
        rewardsDistribution = _rewardsDistribution;
        minimumStakeAmount = _minimumStakeAmount;
        minimumStakeTime = _minimumStakeTime;
    }

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

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

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

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

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

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

    function getStakeRewardDistributionTimeLeft()
        external
        override
        view
        returns (uint256)
    {
        (bool success, uint256 diff) = periodFinish.trySub(block.timestamp);
        return success ? diff : 0;
    }

    function getStakeUnlockTimeLeft() external override view returns (uint256) {
        (bool success, uint256 diff) =
            _stakeTimestamp[msg.sender].add(minimumStakeTime).trySub(
                block.timestamp
            );
        return success ? diff : 0;
    }

    /* ========== MUTATIVE FUNCTIONS ========== */

    function stake(uint256 amount)
        external
        override
        normalMode
        nonReentrant
        notPaused
        updateReward(msg.sender)
    {
        require(amount >= minimumStakeAmount, "Minimum stake amount required");
        _totalSupply = _totalSupply.add(amount);
        _balances[msg.sender] = _balances[msg.sender].add(amount);
        if (_stakeTimestamp[msg.sender] == 0) {
            _stakeTimestamp[msg.sender] = block.timestamp;
        }
        stakingToken.safeTransferFrom(msg.sender, address(this), amount);
        emit Staked(msg.sender, amount);
    }

    function withdraw(uint256 amount)
        public
        override
        normalMode
        nonReentrant
        updateReward(msg.sender)
    {
        require(amount > 0, "Cannot withdraw 0");
        require(
            minimumStakeTime == 0 ||
                block.timestamp.sub(_stakeTimestamp[msg.sender]) >=
                minimumStakeTime,
            "Cannot withdraw until minimum staking time has passed"
        );
        _totalSupply = _totalSupply.sub(amount);
        _balances[msg.sender] = _balances[msg.sender].sub(amount);
        if (_balances[msg.sender] == 0) {
            _stakeTimestamp[msg.sender] = 0;
        }
        stakingToken.safeTransfer(msg.sender, amount);
        emit Withdrawn(msg.sender, amount);
    }

    function getReward()
        public
        override
        normalMode
        nonReentrant
        updateReward(msg.sender)
    {
        require(
            minimumStakeTime == 0 ||
                block.timestamp.sub(_stakeTimestamp[msg.sender]) >=
                minimumStakeTime,
            "Cannot get reward until minimum staking time has passed"
        );
        uint256 reward = rewards[msg.sender];
        if (reward > 0) {
            rewards[msg.sender] = 0;
            rewardsToken.safeTransfer(msg.sender, reward);
            emit RewardPaid(msg.sender, reward);
        }
    }

    function exit() external override normalMode {
        withdraw(_balances[msg.sender]);
        getReward();
    }

    function recoverOwnStake() external failsafeMode {
        uint256 amount = _balances[msg.sender];
        if (amount > 0) {
            _totalSupply = _totalSupply.sub(amount);
            _balances[msg.sender] = _balances[msg.sender].sub(amount);
            stakingToken.safeTransfer(msg.sender, amount);
        }
    }

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

    function notifyRewardAmount(uint256 reward)
        external
        override
        normalMode
        onlyRewardsDistribution
        updateReward(address(0))
    {
        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 = block.timestamp.add(rewardsDuration);
        emit RewardAdded(reward);
    }

    // End rewards emission earlier
    function updatePeriodFinish(uint256 timestamp)
        external
        normalMode
        onlyOwner
        updateReward(address(0))
    {
        require(
            timestamp > lastUpdateTime,
            "Timestamp must be after lastUpdateTime"
        );
        periodFinish = timestamp;
    }

    // Added to support recovering LP Rewards from other systems such as BAL to be distributed to holders
    function recoverERC20(address tokenAddress, uint256 tokenAmount)
        external
        onlyOwner
    {
        require(
            tokenAddress != address(stakingToken),
            "Cannot withdraw the staking token"
        );
        IERC20(tokenAddress).safeTransfer(owner, tokenAmount);
        emit Recovered(tokenAddress, tokenAmount);
    }

    function setRewardsDuration(uint256 _rewardsDuration)
        external
        normalMode
        onlyOwner
    {
        require(
            block.timestamp > periodFinish,
            "Previous rewards period must be complete before changing the duration for the new period"
        );
        rewardsDuration = _rewardsDuration;
        emit RewardsDurationUpdated(rewardsDuration);
    }

    function setMinimumStakeAmount(uint256 _minimumStakeAmount)
        external
        normalMode
        onlyOwner
    {
        minimumStakeAmount = _minimumStakeAmount;
        emit MinimumStakeAmountUpdated(_minimumStakeAmount);
    }

    function setMinimumStakeTime(uint256 _minimumStakeTime)
        external
        normalMode
        onlyOwner
    {
        minimumStakeTime = _minimumStakeTime;
        emit MinimumStakeTimeUpdated(_minimumStakeTime);
    }

    function enableFailsafeMode() public override normalMode onlyOwner {
        minimumStakeAmount = 0;
        minimumStakeTime = 0;
        periodFinish = 0;
        rewardRate = 0;
        rewardPerTokenStored = 0;

        super.enableFailsafeMode();
    }

    function recoverExtraStakingTokensToOwner() external onlyOwner {
        // stake() and withdraw() should guarantee that
        // _totalSupply <= stakingToken.balanceOf(this)
        uint256 stakingTokenAmountBelongingToOwner =
            stakingToken.balanceOf(address(this)).sub(_totalSupply);

        if (stakingTokenAmountBelongingToOwner > 0) {
            stakingToken.safeTransfer(
                owner,
                stakingTokenAmountBelongingToOwner
            );
        }
    }

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

    modifier updateReward(address account) {
        if (!failsafeModeActive) {
            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);
    event RewardsDurationUpdated(uint256 newDuration);
    event MinimumStakeAmountUpdated(uint256 newMinimumStakeAmount);
    event MinimumStakeTimeUpdated(uint256 newMinimumStakeTime);
    event Recovered(address token, uint256 amount);
}

pragma solidity ^0.6.2;

// Inheritance
import "./Owned.sol";

// https://docs.synthetix.io/contracts/source/contracts/pausable
abstract contract SynthetixPausable is Owned {
    uint256 public lastPauseTime;
    bool public paused;

    constructor() internal {
        // This contract is abstract, and thus cannot be instantiated directly
        require(owner != address(0), "Owner must be set");
        // Paused will be false, and lastPauseTime will be 0 upon initialisation
    }

    /**
     * @notice Change the paused state of the contract
     * @dev Only the contract owner may call this.
     */
    function setPaused(bool _paused) external onlyOwner {
        // Ensure we're actually changing the state before we do anything
        if (_paused == paused) {
            return;
        }

        // Set our paused state.
        paused = _paused;

        // If applicable, set the last pause time.
        if (paused) {
            lastPauseTime = now;
        }

        // Let everyone know that our pause state has changed.
        emit PauseChanged(paused);
    }

    event PauseChanged(bool isPaused);

    modifier notPaused {
        require(
            !paused,
            "This action cannot be performed while the contract is paused"
        );
        _;
    }
}

pragma solidity >=0.4.24;

// https://docs.synthetix.io/contracts/source/interfaces/istakingrewards
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);

    function minimumStakeAmount() external view returns (uint256);

    function minimumStakeTime() external view returns (uint256);

    function getStakeRewardDistributionTimeLeft() external view returns (uint256);

    function getStakeUnlockTimeLeft() external view returns (uint256);

    function rewardRate() external view returns (uint256);

    function rewardsDuration() external view returns (uint256);

    // Mutative
    function stake(uint256 amount) external;

    function withdraw(uint256 amount) external;

    function getReward() external;

    function exit() external;

    // 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);

    event RewardsDurationUpdated(uint256 newDuration);

    event MinimumStakeTimeUpdated(uint256 newMinimumStakeTime);
}

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

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_owner","type":"address"},{"internalType":"address","name":"_rewardsDistribution","type":"address"},{"internalType":"address","name":"_rewardsToken","type":"address"},{"internalType":"address","name":"_stakingToken","type":"address"},{"internalType":"uint256","name":"_minimumStakeAmount","type":"uint256"},{"internalType":"uint256","name":"_minimumStakeTime","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[],"name":"FailsafeModeEnabled","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"newMinimumStakeAmount","type":"uint256"}],"name":"MinimumStakeAmountUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"newMinimumStakeTime","type":"uint256"}],"name":"MinimumStakeTimeUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldOwner","type":"address"},{"indexed":false,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnerChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnerNominated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bool","name":"isPaused","type":"bool"}],"name":"PauseChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Recovered","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"reward","type":"uint256"}],"name":"RewardAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"reward","type":"uint256"}],"name":"RewardPaid","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"newDuration","type":"uint256"}],"name":"RewardsDurationUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Staked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Withdrawn","type":"event"},{"inputs":[],"name":"acceptOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"earned","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"enableFailsafeMode","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"exit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"failsafeModeActive","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getReward","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getRewardForDuration","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getStakeRewardDistributionTimeLeft","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getStakeUnlockTimeLeft","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastPauseTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastTimeRewardApplicable","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastUpdateTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"minimumStakeAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"minimumStakeTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"name":"nominateNewOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"nominatedOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"reward","type":"uint256"}],"name":"notifyRewardAmount","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"periodFinish","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"tokenAddress","type":"address"},{"internalType":"uint256","name":"tokenAmount","type":"uint256"}],"name":"recoverERC20","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"recoverExtraStakingTokensToOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"recoverOwnStake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rewardPerToken","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardPerTokenStored","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardRate","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"rewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardsDistribution","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardsDuration","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardsToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_minimumStakeAmount","type":"uint256"}],"name":"setMinimumStakeAmount","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_minimumStakeTime","type":"uint256"}],"name":"setMinimumStakeTime","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_paused","type":"bool"}],"name":"setPaused","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_rewardsDistribution","type":"address"}],"name":"setRewardsDistribution","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_rewardsDuration","type":"uint256"}],"name":"setRewardsDuration","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"stake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"stakingToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"timestamp","type":"uint256"}],"name":"updatePeriodFinish","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"userRewardPerTokenPaid","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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