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0x84Df326E6B809810386B2560BAe2c8400E5e29e9

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Process Idle Rew...219923062025-06-24 20:02:03217 days ago1750795323IN
Aura Finance: Booster Helper
0 FRAX0.000549461.50000025
Process Idle Rew...216539062025-06-17 0:02:03225 days ago1750118523IN
Aura Finance: Booster Helper
0 FRAX0.000213821.50000027
Process Idle Rew...216035062025-06-15 20:02:03226 days ago1750017723IN
Aura Finance: Booster Helper
0 FRAX0.000136371.50000025
Process Idle Rew...214019062025-06-11 4:02:03231 days ago1749614523IN
Aura Finance: Booster Helper
0 FRAX0.00024271.50000025
Process Idle Rew...213371062025-06-09 16:02:03232 days ago1749484923IN
Aura Finance: Booster Helper
0 FRAX0.000680861.50000025
Process Idle Rew...202427062025-05-15 8:02:03257 days ago1747296123IN
Aura Finance: Booster Helper
0 FRAX0.000097321.50000111
Process Idle Rew...199763062025-05-09 4:02:03264 days ago1746763323IN
Aura Finance: Booster Helper
0 FRAX0.000084581.50000112
Process Idle Rew...199475062025-05-08 12:02:03264 days ago1746705723IN
Aura Finance: Booster Helper
0 FRAX0.000088921.50000051
Process Idle Rew...196667072025-05-02 0:02:05271 days ago1746144125IN
Aura Finance: Booster Helper
0 FRAX0.000092981.50000025
Process Idle Rew...196379062025-05-01 8:02:03271 days ago1746086523IN
Aura Finance: Booster Helper
0 FRAX0.000097321.50000025
Process Idle Rew...196235072025-05-01 0:02:05272 days ago1746057725IN
Aura Finance: Booster Helper
0 FRAX0.000091681.50000025
Process Idle Rew...193931062025-04-25 16:02:03277 days ago1745596923IN
Aura Finance: Booster Helper
0 FRAX0.000097561.50000025
Process Idle Rew...193571062025-04-24 20:02:03278 days ago1745524923IN
Aura Finance: Booster Helper
0 FRAX0.000136251.50000025
Process Idle Rew...190475062025-04-17 16:02:03285 days ago1744905723IN
Aura Finance: Booster Helper
0 FRAX0.000161681.50000025
Process Idle Rew...189899062025-04-16 8:02:03286 days ago1744790523IN
Aura Finance: Booster Helper
0 FRAX0.000097351.50000111
Process Idle Rew...187379062025-04-10 12:02:03292 days ago1744286523IN
Aura Finance: Booster Helper
0 FRAX0.000140561.50000111
Process Idle Rew...184283062025-04-03 8:02:03299 days ago1743667323IN
Aura Finance: Booster Helper
0 FRAX0.000161681.5000011
Process Idle Rew...177154472025-03-17 20:00:05316 days ago1742241605IN
Aura Finance: Booster Helper
0 FRAX0.000093021.50000025
Process Idle Rew...175498472025-03-14 0:00:05320 days ago1741910405IN
Aura Finance: Booster Helper
0 FRAX0.000088961.50000025
Process Idle Rew...175210472025-03-13 8:00:05320 days ago1741852805IN
Aura Finance: Booster Helper
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Process Idle Rew...172402482025-03-06 20:00:07327 days ago1741291207IN
Aura Finance: Booster Helper
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Process Idle Rew...169306462025-02-27 16:00:03334 days ago1740672003IN
Aura Finance: Booster Helper
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Process Idle Rew...166066472025-02-20 4:00:05342 days ago1740024005IN
Aura Finance: Booster Helper
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Process Idle Rew...164986472025-02-17 16:00:05344 days ago1739808005IN
Aura Finance: Booster Helper
0 FRAX0.000095931.50000025
Process Idle Rew...160954462025-02-08 8:00:03353 days ago1739001603IN
Aura Finance: Booster Helper
0 FRAX0.000097391.50000025
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59546152024-06-18 14:12:21588 days ago1718719941  Contract Creation0 FRAX

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Contract Name:
BoosterHelper

Compiler Version
v0.8.11+commit.d7f03943

Optimization Enabled:
Yes with 800 runs

Other Settings:
default evmVersion
// SPDX-License-Identifier: MIT
pragma solidity 0.8.11;

import { IERC20 } from "@openzeppelin/contracts-0.8/token/ERC20/IERC20.sol";
import { SafeERC20 } from "@openzeppelin/contracts-0.8/token/ERC20/utils/SafeERC20.sol";
import { IBooster } from "../interfaces/IBooster.sol";
import { IRewardStaking } from "../interfaces/IRewardStaking.sol";

interface IBaseRewardPool {
    function lastTimeRewardApplicable() external view returns (uint256);

    function periodFinish() external view returns (uint256);

    function queuedRewards() external view returns (uint256);

    function extraRewards(uint256) external view returns (address);

    function extraRewardsLength() external view returns (uint256);
}

/**
 * @title   BoosterHelper
 * @author  AuraFinance
 * @notice  Invokes booster.earmarkRewards for multiple pools.
 * @dev     Allows anyone to call `earmarkRewards`  via the booster.
 */
contract BoosterHelper {
    using SafeERC20 for IERC20;
    struct PoolInfo {
        uint256 pid;
        address lptoken;
        address token;
        address gauge;
        address crvRewards;
        address stash;
        bool shutdown;
    }

    IBooster public immutable booster;
    address public immutable crv;

    /**
     * @param _booster      Booster.sol, e.g. 0xF403C135812408BFbE8713b5A23a04b3D48AAE31
     * @param _crv          Crv  e.g. 0xba100000625a3754423978a60c9317c58a424e3D
     */
    constructor(address _booster, address _crv) {
        booster = IBooster(_booster);
        crv = _crv;
    }

    /**
     * @notice Invoke earmarkRewards for each pool id.
     * @param _pids Array of pool ids
     * @return amount of crv received as incentive
     */
    function earmarkRewards(uint256[] memory _pids) external returns (uint256) {
        uint256 len = _pids.length;
        require(len > 0, "!pids");

        for (uint256 i = 0; i < len; i++) {
            require(booster.earmarkRewards(_pids[i]), "!earmark reward");
        }
        // Return all incentives to the sender
        uint256 crvBal = IERC20(crv).balanceOf(address(this));
        IERC20(crv).safeTransfer(msg.sender, crvBal);
        return crvBal;
    }

    /**
     * @notice Invoke processIdleRewards for each pool id.
     * @param _pids Array of pool ids
     */
    function processIdleRewards(uint256[] memory _pids) external {
        uint256 len = _pids.length;
        require(len > 0, "!pids");

        for (uint256 i = 0; i < len; i++) {
            IBooster.PoolInfo memory poolInfo = booster.poolInfo(_pids[i]);
            IRewardStaking baseRewardPool = IRewardStaking(poolInfo.crvRewards);
            baseRewardPool.processIdleRewards();
        }
    }

    /**
     * @notice Invoke processIdleRewards for each pool address.
     * It is useful to process base pools and virtual pools.
     * @param _pools Array of pool addresses
     */
    function processIdleRewardsByAddress(address[] memory _pools) external {
        uint256 len = _pools.length;
        require(len > 0, "!pools");

        for (uint256 i = 0; i < len; i++) {
            IRewardStaking baseRewardPool = IRewardStaking(_pools[i]);
            baseRewardPool.processIdleRewards();
        }
    }

    // ----------------------------------------------------------------
    // External  Views
    // ----------------------------------------------------------------

    /**
     * @dev Loop through the booster pools and retrieve expired pools.
     * @param start The start pid to look up
     * @param daysToExpiration Number of days before period ends to be considred expired.
     * @return expired poolIds.
     */
    function getExpiredPools(uint256 start, uint256 daysToExpiration) external view returns (PoolInfo[] memory) {
        uint256 end = booster.poolLength();
        PoolInfo[] memory pids = new PoolInfo[](end - start);
        uint256 idx = 0;
        for (uint256 i = start; i < end; i++) {
            IBooster.PoolInfo memory poolInfo = booster.poolInfo(i);
            if (_isExpiredWithoutQueuedRewards(poolInfo, daysToExpiration)) {
                pids[idx++] = PoolInfo({
                    pid: i,
                    lptoken: poolInfo.lptoken,
                    token: poolInfo.token,
                    gauge: poolInfo.gauge,
                    crvRewards: poolInfo.crvRewards,
                    stash: poolInfo.stash,
                    shutdown: poolInfo.shutdown
                });
            }
        }
        return _sliceArray(pids, idx);
    }

    /**
     * @dev Loop through the booster pools and retrieve the expired pools with idle rewards.
     * @param start The start pid
     * @return idle poolIds.
     */
    function getIdlePoolIds(uint256 start) external view returns (uint256[] memory) {
        uint256 end = booster.poolLength();
        uint256[] memory pids = new uint256[](end - start);
        uint256 idx = 0;
        for (uint256 i = start; i < end; i++) {
            if (_isExpiredWithQueuedRewards(i)) {
                pids[idx++] = i;
            }
        }
        return _sliceArray(pids, idx);
    }

    /**
     * @dev Loop through the booster pools (base and virtual) and retrieve the expired ones with idle rewards.
     * @param start The start pid
     * @return idle pool addresses.
     */
    function getIdleBaseAndVirtualPools(uint256 start) external view returns (address[] memory) {
        uint256 end = booster.poolLength();
        // Create array with extra room for virtual pools
        address[] memory idlePools = new address[]((end - start) * 2);
        uint256 idx = 0;
        for (uint256 i = start; i < end; i++) {
            IBooster.PoolInfo memory poolInfo = booster.poolInfo(i);
            address[] memory virtualRewardPools = _getVirtualRewardPools(poolInfo.crvRewards);
            uint256 virtualRewardPoolsLength = virtualRewardPools.length;
            for (uint256 j = 0; j < virtualRewardPoolsLength; j++) {
                address virtualRewardPool = virtualRewardPools[j];
                if (_isExpiredWithQueuedRewards(virtualRewardPool)) {
                    idlePools[idx++] = virtualRewardPool;
                }
            }
            // Evaluate base reward pools
            if (_isExpiredWithQueuedRewards(poolInfo.crvRewards)) {
                idlePools[idx++] = poolInfo.crvRewards;
            }
        }
        return _sliceArray(idlePools, idx);
    }

    // ----------------------------------------------------------------
    // Internal
    // ----------------------------------------------------------------

    /// @dev evaluates if a given pool (by pid) is expired or about to expired if daysToExpiration > 0
    function _isExpiredWithoutQueuedRewards(IBooster.PoolInfo memory poolInfo, uint256 daysToExpiration)
        internal
        view
        returns (bool)
    {
        // Ignore shutdown pools early
        if (poolInfo.shutdown) return false;

        IBaseRewardPool baseRewardPool = IBaseRewardPool(poolInfo.crvRewards);
        if (baseRewardPool.queuedRewards() > 0) return false;

        // If it is expired return the value
        uint256 periodFinish = baseRewardPool.periodFinish();
        if (block.timestamp > periodFinish) return true;

        //If it is not expired yet, evaluate if it is about to expire
        uint256 lastTimeRewardApplicable = baseRewardPool.lastTimeRewardApplicable();
        uint256 daysToNextEarmark = (periodFinish - lastTimeRewardApplicable) / 86400;

        return daysToNextEarmark <= daysToExpiration;
    }

    /// @dev evaluates if a given pool (by pid) is expired with queued rewards.
    function _isExpiredWithQueuedRewards(uint256 pid) internal view returns (bool) {
        IBooster.PoolInfo memory poolInfo = booster.poolInfo(pid);
        // Ignore shutdown pools early
        if (poolInfo.shutdown) return false;

        return _isExpiredWithQueuedRewards(poolInfo.crvRewards);
    }

    /// @dev evaluates if a given pool (by address) is expired with queued rewards.
    function _isExpiredWithQueuedRewards(address crvRewards) internal view returns (bool) {
        IBaseRewardPool baseRewardPool = IBaseRewardPool(crvRewards);
        if (baseRewardPool.queuedRewards() == 0) return false;

        return (block.timestamp > baseRewardPool.periodFinish());
    }

    /// @dev gets all virtual pools linked to a base reward pool.
    function _getVirtualRewardPools(address crvRewards) internal view returns (address[] memory) {
        IBaseRewardPool baseRewardPool = IBaseRewardPool(crvRewards);

        uint256 extraRewardsLength = baseRewardPool.extraRewardsLength();
        address[] memory virtualBalanceRewardPools = new address[](extraRewardsLength);
        for (uint256 i = 0; i < extraRewardsLength; i++) {
            virtualBalanceRewardPools[i] = baseRewardPool.extraRewards(i);
        }
        return virtualBalanceRewardPools;
    }

    function _sliceArray(PoolInfo[] memory _arr, uint256 length) internal pure returns (PoolInfo[] memory) {
        PoolInfo[] memory arr = new PoolInfo[](length);
        for (uint256 i = 0; i < length; i++) {
            arr[i] = _arr[i];
        }
        return arr;
    }

    function _sliceArray(uint256[] memory _arr, uint256 length) internal pure returns (uint256[] memory) {
        uint256[] memory arr = new uint256[](length);
        for (uint256 i = 0; i < length; i++) {
            arr[i] = _arr[i];
        }
        return arr;
    }

    function _sliceArray(address[] memory _arr, uint256 length) internal pure returns (address[] memory) {
        address[] memory arr = new address[](length);
        for (uint256 i = 0; i < length; i++) {
            arr[i] = _arr[i];
        }
        return arr;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Moves `amount` tokens from the caller's account to `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
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.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 Address for address;

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Address.sol)

pragma solidity ^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;
        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");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

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

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

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

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

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.11;

interface IBooster {
    struct FeeDistro {
        address distro;
        address rewards;
        bool active;
    }

    function feeTokens(address _token) external returns (FeeDistro memory);

    function earmarkFees(address _feeToken) external returns (bool);

    struct PoolInfo {
        address lptoken;
        address token;
        address gauge;
        address crvRewards;
        address stash;
        bool shutdown;
    }

    function earmarkRewards(uint256 _pid) external returns (bool);

    function poolLength() external view returns (uint256);

    function lockRewards() external view returns (address);

    function poolInfo(uint256 _pid) external view returns (PoolInfo memory poolInfo);

    function distributeL2Fees(uint256 _amount) external;

    function lockIncentive() external view returns (uint256);

    function stakerIncentive() external view returns (uint256);

    function earmarkIncentive() external view returns (uint256);

    function platformFee() external view returns (uint256);

    function FEE_DENOMINATOR() external view returns (uint256);

    function voteGaugeWeight(address[] calldata _gauge, uint256[] calldata _weight) external returns (bool);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.11;

interface IRewardStaking {
    function getReward(address _account, bool _claimExtras) external;

    function getReward(address _account) external;

    function getReward(address _account, address _token) external;

    function stakeFor(address, uint256) external;

    function processIdleRewards() external;
}

Settings
{
  "metadata": {
    "bytecodeHash": "none"
  },
  "optimizer": {
    "enabled": true,
    "runs": 800
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

API
[{"inputs":[{"internalType":"address","name":"_booster","type":"address"},{"internalType":"address","name":"_crv","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"booster","outputs":[{"internalType":"contract IBooster","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"crv","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"_pids","type":"uint256[]"}],"name":"earmarkRewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"start","type":"uint256"},{"internalType":"uint256","name":"daysToExpiration","type":"uint256"}],"name":"getExpiredPools","outputs":[{"components":[{"internalType":"uint256","name":"pid","type":"uint256"},{"internalType":"address","name":"lptoken","type":"address"},{"internalType":"address","name":"token","type":"address"},{"internalType":"address","name":"gauge","type":"address"},{"internalType":"address","name":"crvRewards","type":"address"},{"internalType":"address","name":"stash","type":"address"},{"internalType":"bool","name":"shutdown","type":"bool"}],"internalType":"struct BoosterHelper.PoolInfo[]","name":"","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"start","type":"uint256"}],"name":"getIdleBaseAndVirtualPools","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"start","type":"uint256"}],"name":"getIdlePoolIds","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"_pids","type":"uint256[]"}],"name":"processIdleRewards","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_pools","type":"address[]"}],"name":"processIdleRewardsByAddress","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

00000000000000000000000098ef32edd24e2c92525e59afc4475c1242a301840000000000000000000000002fc7447f6cf71f9aa9e7ff8814b37e55b268ec91

-----Decoded View---------------
Arg [0] : _booster (address): 0x98Ef32edd24e2c92525E59afc4475C1242a30184
Arg [1] : _crv (address): 0x2FC7447F6cF71f9aa9E7FF8814B37E55b268Ec91

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 00000000000000000000000098ef32edd24e2c92525e59afc4475c1242a30184
Arg [1] : 0000000000000000000000002fc7447f6cf71f9aa9e7ff8814b37e55b268ec91


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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.