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// SPDX-License-Identifier: BUSL-1.1
pragma solidity =0.8.12;

import "./StrategyBase.sol";

/**
 * @title A Strategy implementation inheriting from `StrategyBase` that limits the total amount of deposits it will accept.
 * @dev Note that this implementation still converts between any amount of shares or underlying tokens in its view functions;
 * these functions purposefully do not take the TVL limit into account.
 * @author Layr Labs, Inc.
 * @notice Terms of Service: https://docs.eigenlayer.xyz/overview/terms-of-service
 */
contract StrategyBaseTVLLimits is StrategyBase {
    /// The maximum deposit (in underlyingToken) that this strategy will accept per deposit
    uint256 public maxPerDeposit;

    /// The maximum deposits (in underlyingToken) that this strategy will hold
    uint256 public maxTotalDeposits;

    /// @notice Emitted when `maxPerDeposit` value is updated from `previousValue` to `newValue`
    event MaxPerDepositUpdated(uint256 previousValue, uint256 newValue);

    /// @notice Emitted when `maxTotalDeposits` value is updated from `previousValue` to `newValue`
    event MaxTotalDepositsUpdated(uint256 previousValue, uint256 newValue);


    constructor(IStrategyManager _strategyManager) StrategyBase(_strategyManager) {}

    function initialize(uint256 _maxPerDeposit, uint256 _maxTotalDeposits, IERC20 _underlyingToken, IPauserRegistry _pauserRegistry)
        public virtual initializer
    {
        _setTVLLimits(_maxPerDeposit, _maxTotalDeposits);
        _initializeStrategyBase(_underlyingToken, _pauserRegistry);
    }

    /**
     * @notice Sets the maximum deposits (in underlyingToken) that this strategy will hold and accept per deposit
     * @param newMaxTotalDeposits The new maximum deposits
     * @dev Callable only by the unpauser of this contract
     * @dev We note that there is a potential race condition between a call to this function that lowers either or both of these limits and call(s)
     * to `deposit`, that may result in some calls to `deposit` reverting.
     */
    function setTVLLimits(uint256 newMaxPerDeposit, uint256 newMaxTotalDeposits) external onlyUnpauser {
        _setTVLLimits(newMaxPerDeposit, newMaxTotalDeposits);
    }

    /// @notice Simple getter function that returns the current values of `maxPerDeposit` and `maxTotalDeposits`.
    function getTVLLimits() external view returns (uint256, uint256) {
        return (maxPerDeposit, maxTotalDeposits);
    }

    /// @notice Internal setter for TVL limits
    function _setTVLLimits(uint256 newMaxPerDeposit, uint256 newMaxTotalDeposits) internal {
        emit MaxPerDepositUpdated(maxPerDeposit, newMaxPerDeposit);
        emit MaxTotalDepositsUpdated(maxTotalDeposits, newMaxTotalDeposits);
        require(newMaxPerDeposit <= newMaxTotalDeposits, "StrategyBaseTVLLimits._setTVLLimits: maxPerDeposit exceeds maxTotalDeposits");
        maxPerDeposit = newMaxPerDeposit;
        maxTotalDeposits = newMaxTotalDeposits;
    }

    /**
     * @notice Called in the external `deposit` function, before any logic is executed. Makes sure that deposits don't exceed configured maximum.
     * @dev Unused token param is the token being deposited. This is already checked in the `deposit` function.
     * @dev Note that the `maxTotalDeposits` is purely checked against the current `_tokenBalance()`, since by this point in the deposit flow, the
     * tokens should have already been transferred to this Strategy by the StrategyManager
     * @dev We note as well that this makes it possible for various race conditions to occur:
     * a) multiple simultaneous calls to `deposit` may result in some of these calls reverting due to `maxTotalDeposits` being reached.
     * b) transferring funds directly to this Strategy (although not generally in someone's economic self interest) in order to reach `maxTotalDeposits`
     * is a route by which someone can cause calls to `deposit` to revert.
     * c) increases in the token balance of this contract through other effects – including token rebasing – may cause similar issues to (a) and (b).
     * @param amount The amount of `token` being deposited
     */
    function _beforeDeposit(IERC20 /*token*/, uint256 amount) internal virtual override {
        require(amount <= maxPerDeposit, "StrategyBaseTVLLimits: max per deposit exceeded");
        require(_tokenBalance() <= maxTotalDeposits, "StrategyBaseTVLLimits: max deposits exceeded");
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[48] private __gap;
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity =0.8.12;

import "../interfaces/IStrategyManager.sol";
import "../permissions/Pausable.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin-upgrades/contracts/proxy/utils/Initializable.sol";

/**
 * @title Base implementation of `IStrategy` interface, designed to be inherited from by more complex strategies.
 * @author Layr Labs, Inc.
 * @notice Terms of Service: https://docs.eigenlayer.xyz/overview/terms-of-service
 * @notice Simple, basic, "do-nothing" Strategy that holds a single underlying token and returns it on withdrawals.
 * Implements minimal versions of the IStrategy functions, this contract is designed to be inherited by
 * more complex strategies, which can then override its functions as necessary.
 * @dev Note that some functions have their mutability restricted; developers inheriting from this contract cannot broaden
 * the mutability without modifying this contract itself.
 * @dev This contract is expressly *not* intended for use with 'fee-on-transfer'-type tokens.
 * Setting the `underlyingToken` to be a fee-on-transfer token may result in improper accounting.
 * @notice This contract functions similarly to an ERC4626 vault, only without issuing a token.
 * To mitigate against the common "inflation attack" vector, we have chosen to use the 'virtual shares' mitigation route,
 * similar to [OpenZeppelin](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/extensions/ERC4626.sol).
 * We acknowledge that this mitigation has the known downside of the virtual shares causing some losses to users, which are pronounced
 * particularly in the case of the share exchange rate changing signficantly, either positively or negatively.
 * For a fairly thorough discussion of this issue and our chosen mitigation strategy, we recommend reading through
 * [this thread](https://github.com/OpenZeppelin/openzeppelin-contracts/issues/3706) on the OpenZeppelin repo.
 * We specifically use a share offset of `SHARES_OFFSET` and a balance offset of `BALANCE_OFFSET`.
 */
contract StrategyBase is Initializable, Pausable, IStrategy {
    using SafeERC20 for IERC20;

    uint8 internal constant PAUSED_DEPOSITS = 0;
    uint8 internal constant PAUSED_WITHDRAWALS = 1;

    /**
     * @notice virtual shares used as part of the mitigation of the common 'share inflation' attack vector.
     * Constant value chosen to reasonably reduce attempted share inflation by the first depositor, while still
     * incurring reasonably small losses to depositors
     */
    uint256 internal constant SHARES_OFFSET = 1e3;
    /** 
     * @notice virtual balance used as part of the mitigation of the common 'share inflation' attack vector
     * Constant value chosen to reasonably reduce attempted share inflation by the first depositor, while still
     * incurring reasonably small losses to depositors
     */
    uint256 internal constant BALANCE_OFFSET = 1e3;

    /// @notice EigenLayer's StrategyManager contract
    IStrategyManager public immutable strategyManager;

    /// @notice The underlying token for shares in this Strategy
    IERC20 public underlyingToken;

    /// @notice The total number of extant shares in this Strategy
    uint256 public totalShares;

    /// @notice Simply checks that the `msg.sender` is the `strategyManager`, which is an address stored immutably at construction.
    modifier onlyStrategyManager() {
        require(msg.sender == address(strategyManager), "StrategyBase.onlyStrategyManager");
        _;
    }

    /// @notice Since this contract is designed to be initializable, the constructor simply sets `strategyManager`, the only immutable variable.
    constructor(IStrategyManager _strategyManager) {
        strategyManager = _strategyManager;
        _disableInitializers();
    }

    function initialize(IERC20 _underlyingToken, IPauserRegistry _pauserRegistry) public virtual initializer {
        _initializeStrategyBase(_underlyingToken, _pauserRegistry);
    }

    /// @notice Sets the `underlyingToken` and `pauserRegistry` for the strategy.
    function _initializeStrategyBase(IERC20 _underlyingToken, IPauserRegistry _pauserRegistry) internal onlyInitializing {
        underlyingToken = _underlyingToken;
        _initializePauser(_pauserRegistry, UNPAUSE_ALL);
    }

    /**
     * @notice Used to deposit tokens into this Strategy
     * @param token is the ERC20 token being deposited
     * @param amount is the amount of token being deposited
     * @dev This function is only callable by the strategyManager contract. It is invoked inside of the strategyManager's
     * `depositIntoStrategy` function, and individual share balances are recorded in the strategyManager as well.
     * @dev Note that the assumption is made that `amount` of `token` has already been transferred directly to this contract
     * (as performed in the StrategyManager's deposit functions). In particular, setting the `underlyingToken` of this contract
     * to be a fee-on-transfer token will break the assumption that the amount this contract *received* of the token is equal to
     * the amount that was input when the transfer was performed (i.e. the amount transferred 'out' of the depositor's balance).
     * @return newShares is the number of new shares issued at the current exchange ratio.
     */
    function deposit(IERC20 token, uint256 amount)
        external
        virtual
        override
        onlyWhenNotPaused(PAUSED_DEPOSITS)
        onlyStrategyManager
        returns (uint256 newShares)
    {
        // call hook to allow for any pre-deposit logic
        _beforeDeposit(token, amount);

        require(token == underlyingToken, "StrategyBase.deposit: Can only deposit underlyingToken");

        // copy `totalShares` value to memory, prior to any change
        uint256 priorTotalShares = totalShares;

        /**
         * @notice calculation of newShares *mirrors* `underlyingToShares(amount)`, but is different since the balance of `underlyingToken`
         * has already been increased due to the `strategyManager` transferring tokens to this strategy prior to calling this function
         */
        // account for virtual shares and balance
        uint256 virtualShareAmount = priorTotalShares + SHARES_OFFSET;
        uint256 virtualTokenBalance = _tokenBalance() + BALANCE_OFFSET;
        // calculate the prior virtual balance to account for the tokens that were already transferred to this contract
        uint256 virtualPriorTokenBalance = virtualTokenBalance - amount;
        newShares = (amount * virtualShareAmount) / virtualPriorTokenBalance;

        // extra check for correctness / against edge case where share rate can be massively inflated as a 'griefing' sort of attack
        require(newShares != 0, "StrategyBase.deposit: newShares cannot be zero");

        // update total share amount to account for deposit
        totalShares = (priorTotalShares + newShares);
        return newShares;
    }

    /**
     * @notice Used to withdraw tokens from this Strategy, to the `depositor`'s address
     * @param depositor is the address to receive the withdrawn funds
     * @param token is the ERC20 token being transferred out
     * @param amountShares is the amount of shares being withdrawn
     * @dev This function is only callable by the strategyManager contract. It is invoked inside of the strategyManager's
     * other functions, and individual share balances are recorded in the strategyManager as well.
     */
    function withdraw(address depositor, IERC20 token, uint256 amountShares)
        external
        virtual
        override
        onlyWhenNotPaused(PAUSED_WITHDRAWALS)
        onlyStrategyManager
    {
        // call hook to allow for any pre-withdrawal logic
        _beforeWithdrawal(depositor, token, amountShares);
        
        require(token == underlyingToken, "StrategyBase.withdraw: Can only withdraw the strategy token");

        // copy `totalShares` value to memory, prior to any change
        uint256 priorTotalShares = totalShares;

        require(
            amountShares <= priorTotalShares,
            "StrategyBase.withdraw: amountShares must be less than or equal to totalShares"
        );

        /**
         * @notice calculation of amountToSend *mirrors* `sharesToUnderlying(amountShares)`, but is different since the `totalShares` has already
         * been decremented. Specifically, notice how we use `priorTotalShares` here instead of `totalShares`.
         */
        // account for virtual shares and balance
        uint256 virtualPriorTotalShares = priorTotalShares + SHARES_OFFSET;
        uint256 virtualTokenBalance = _tokenBalance() + BALANCE_OFFSET;
        // calculate ratio based on virtual shares and balance, being careful to multiply before dividing
        uint256 amountToSend = (virtualTokenBalance * amountShares) / virtualPriorTotalShares;

        // Decrease the `totalShares` value to reflect the withdrawal
        totalShares = priorTotalShares - amountShares;

        underlyingToken.safeTransfer(depositor, amountToSend);
    }


    /**
     * @notice Called in the external `deposit` function, before any logic is executed. Expected to be overridden if strategies want such logic.
     * @param token The token being deposited
     * @param amount The amount of `token` being deposited
     */
    function _beforeDeposit(IERC20 token, uint256 amount)  internal virtual {}

    /**
     * @notice Called in the external `withdraw` function, before any logic is executed.  Expected to be overridden if strategies want such logic.
     * @param depositor The address that will receive the withdrawn tokens
     * @param token The token being withdrawn
     * @param amountShares The amount of shares being withdrawn
     */
    function _beforeWithdrawal(address depositor, IERC20 token, uint256 amountShares) internal virtual {}

    /**
     * @notice Currently returns a brief string explaining the strategy's goal & purpose, but for more complex
     * strategies, may be a link to metadata that explains in more detail.
     */
    function explanation() external pure virtual override returns (string memory) {
        return "Base Strategy implementation to inherit from for more complex implementations";
    }

    /**
     * @notice Used to convert a number of shares to the equivalent amount of underlying tokens for this strategy.
     * @notice In contrast to `sharesToUnderlying`, this function guarantees no state modifications
     * @param amountShares is the amount of shares to calculate its conversion into the underlying token
     * @return The amount of underlying tokens corresponding to the input `amountShares`
     * @dev Implementation for these functions in particular may vary significantly for different strategies
     */
    function sharesToUnderlyingView(uint256 amountShares) public view virtual override returns (uint256) {
        // account for virtual shares and balance
        uint256 virtualTotalShares = totalShares + SHARES_OFFSET;
        uint256 virtualTokenBalance = _tokenBalance() + BALANCE_OFFSET;
        // calculate ratio based on virtual shares and balance, being careful to multiply before dividing
        return (virtualTokenBalance * amountShares) / virtualTotalShares;
    }

    /**
     * @notice Used to convert a number of shares to the equivalent amount of underlying tokens for this strategy.
     * @notice In contrast to `sharesToUnderlyingView`, this function **may** make state modifications
     * @param amountShares is the amount of shares to calculate its conversion into the underlying token
     * @return The amount of underlying tokens corresponding to the input `amountShares`
     * @dev Implementation for these functions in particular may vary significantly for different strategies
     */
    function sharesToUnderlying(uint256 amountShares) public view virtual override returns (uint256) {
        return sharesToUnderlyingView(amountShares);
    }

    /**
     * @notice Used to convert an amount of underlying tokens to the equivalent amount of shares in this strategy.
     * @notice In contrast to `underlyingToShares`, this function guarantees no state modifications
     * @param amountUnderlying is the amount of `underlyingToken` to calculate its conversion into strategy shares
     * @return The amount of shares corresponding to the input `amountUnderlying`
     * @dev Implementation for these functions in particular may vary significantly for different strategies
     */
    function underlyingToSharesView(uint256 amountUnderlying) public view virtual returns (uint256) {
        // account for virtual shares and balance
        uint256 virtualTotalShares = totalShares + SHARES_OFFSET;
        uint256 virtualTokenBalance = _tokenBalance() + BALANCE_OFFSET;
        // calculate ratio based on virtual shares and balance, being careful to multiply before dividing
        return (amountUnderlying * virtualTotalShares) / virtualTokenBalance;
    }

    /**
     * @notice Used to convert an amount of underlying tokens to the equivalent amount of shares in this strategy.
     * @notice In contrast to `underlyingToSharesView`, this function **may** make state modifications
     * @param amountUnderlying is the amount of `underlyingToken` to calculate its conversion into strategy shares
     * @return The amount of shares corresponding to the input `amountUnderlying`
     * @dev Implementation for these functions in particular may vary significantly for different strategies
     */
    function underlyingToShares(uint256 amountUnderlying) external view virtual returns (uint256) {
        return underlyingToSharesView(amountUnderlying);
    }

    /**
     * @notice convenience function for fetching the current underlying value of all of the `user`'s shares in
     * this strategy. In contrast to `userUnderlying`, this function guarantees no state modifications
     */
    function userUnderlyingView(address user) external view virtual returns (uint256) {
        return sharesToUnderlyingView(shares(user));
    }

    /**
     * @notice convenience function for fetching the current underlying value of all of the `user`'s shares in
     * this strategy. In contrast to `userUnderlyingView`, this function **may** make state modifications
     */
    function userUnderlying(address user) external virtual returns (uint256) {
        return sharesToUnderlying(shares(user));
    }

    /**
     * @notice convenience function for fetching the current total shares of `user` in this strategy, by
     * querying the `strategyManager` contract
     */
    function shares(address user) public view virtual returns (uint256) {
        return strategyManager.stakerStrategyShares(user, IStrategy(address(this)));
    }

    /// @notice Internal function used to fetch this contract's current balance of `underlyingToken`.
    // slither-disable-next-line dead-code
    function _tokenBalance() internal view virtual returns (uint256) {
        return underlyingToken.balanceOf(address(this));
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[48] private __gap;
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity =0.8.12;

import "./IStrategy.sol";
import "./ISlasher.sol";
import "./IDelegationManager.sol";

/**
 * @title Interface for the primary entrypoint for funds into EigenLayer.
 * @author Layr Labs, Inc.
 * @notice Terms of Service: https://docs.eigenlayer.xyz/overview/terms-of-service
 * @notice See the `StrategyManager` contract itself for implementation details.
 */
interface IStrategyManager {
    // packed struct for queued withdrawals; helps deal with stack-too-deep errors
    struct WithdrawerAndNonce {
        address withdrawer;
        uint96 nonce;
    }

    /**
     * Struct type used to specify an existing queued withdrawal. Rather than storing the entire struct, only a hash is stored.
     * In functions that operate on existing queued withdrawals -- e.g. `startQueuedWithdrawalWaitingPeriod` or `completeQueuedWithdrawal`,
     * the data is resubmitted and the hash of the submitted data is computed by `calculateWithdrawalRoot` and checked against the
     * stored hash in order to confirm the integrity of the submitted data.
     */
    struct QueuedWithdrawal {
        IStrategy[] strategies;
        uint256[] shares;
        address depositor;
        WithdrawerAndNonce withdrawerAndNonce;
        uint32 withdrawalStartBlock;
        address delegatedAddress;
    }

    /**
     * @notice Deposits `amount` of `token` into the specified `strategy`, with the resultant shares credited to `msg.sender`
     * @param strategy is the specified strategy where deposit is to be made,
     * @param token is the denomination in which the deposit is to be made,
     * @param amount is the amount of token to be deposited in the strategy by the depositor
     * @return shares The amount of new shares in the `strategy` created as part of the action.
     * @dev The `msg.sender` must have previously approved this contract to transfer at least `amount` of `token` on their behalf.
     * @dev Cannot be called by an address that is 'frozen' (this function will revert if the `msg.sender` is frozen).
     * 
     * WARNING: Depositing tokens that allow reentrancy (eg. ERC-777) into a strategy is not recommended.  This can lead to attack vectors
     *          where the token balance and corresponding strategy shares are not in sync upon reentrancy.
     */
    function depositIntoStrategy(IStrategy strategy, IERC20 token, uint256 amount)
        external
        returns (uint256 shares);


    /**
     * @notice Deposits `amount` of beaconchain ETH into this contract on behalf of `staker`
     * @param staker is the entity that is restaking in eigenlayer,
     * @param amount is the amount of beaconchain ETH being restaked,
     * @dev Only callable by EigenPodManager.
     */
    function depositBeaconChainETH(address staker, uint256 amount) external;

    /**
     * @notice Records an overcommitment event on behalf of a staker. The staker's beaconChainETH shares are decremented by `amount`.
     * @param overcommittedPodOwner is the pod owner to be slashed
     * @param beaconChainETHStrategyIndex is the index of the beaconChainETHStrategy in case it must be removed,
     * @param amount is the amount to decrement the slashedAddress's beaconChainETHStrategy shares
     * @dev Only callable by EigenPodManager.
     */
    function recordOvercommittedBeaconChainETH(address overcommittedPodOwner, uint256 beaconChainETHStrategyIndex, uint256 amount)
        external;

    /**
     * @notice Used for depositing an asset into the specified strategy with the resultant shares credited to `staker`,
     * who must sign off on the action.
     * Note that the assets are transferred out/from the `msg.sender`, not from the `staker`; this function is explicitly designed 
     * purely to help one address deposit 'for' another.
     * @param strategy is the specified strategy where deposit is to be made,
     * @param token is the denomination in which the deposit is to be made,
     * @param amount is the amount of token to be deposited in the strategy by the depositor
     * @param staker the staker that the deposited assets will be credited to
     * @param expiry the timestamp at which the signature expires
     * @param signature is a valid signature from the `staker`. either an ECDSA signature if the `staker` is an EOA, or data to forward
     * following EIP-1271 if the `staker` is a contract
     * @return shares The amount of new shares in the `strategy` created as part of the action.
     * @dev The `msg.sender` must have previously approved this contract to transfer at least `amount` of `token` on their behalf.
     * @dev A signature is required for this function to eliminate the possibility of griefing attacks, specifically those
     * targeting stakers who may be attempting to undelegate.
     * @dev Cannot be called on behalf of a staker that is 'frozen' (this function will revert if the `staker` is frozen).
     * 
     *  WARNING: Depositing tokens that allow reentrancy (eg. ERC-777) into a strategy is not recommended.  This can lead to attack vectors
     *          where the token balance and corresponding strategy shares are not in sync upon reentrancy
     */
    function depositIntoStrategyWithSignature(
        IStrategy strategy,
        IERC20 token,
        uint256 amount,
        address staker,
        uint256 expiry,
        bytes memory signature
    )
        external
        returns (uint256 shares);

    /// @notice Returns the current shares of `user` in `strategy`
    function stakerStrategyShares(address user, IStrategy strategy) external view returns (uint256 shares);

    /**
     * @notice Get all details on the depositor's deposits and corresponding shares
     * @return (depositor's strategies, shares in these strategies)
     */
    function getDeposits(address depositor) external view returns (IStrategy[] memory, uint256[] memory);

    /// @notice Simple getter function that returns `stakerStrategyList[staker].length`.
    function stakerStrategyListLength(address staker) external view returns (uint256);

    /**
     * @notice Called by a staker to queue a withdrawal of the given amount of `shares` from each of the respective given `strategies`.
     * @dev Stakers will complete their withdrawal by calling the 'completeQueuedWithdrawal' function.
     * User shares are decreased in this function, but the total number of shares in each strategy remains the same.
     * The total number of shares is decremented in the 'completeQueuedWithdrawal' function instead, which is where
     * the funds are actually sent to the user through use of the strategies' 'withdrawal' function. This ensures
     * that the value per share reported by each strategy will remain consistent, and that the shares will continue
     * to accrue gains during the enforced withdrawal waiting period.
     * @param strategyIndexes is a list of the indices in `stakerStrategyList[msg.sender]` that correspond to the strategies
     * for which `msg.sender` is withdrawing 100% of their shares
     * @param strategies The Strategies to withdraw from
     * @param shares The amount of shares to withdraw from each of the respective Strategies in the `strategies` array
     * @param withdrawer The address that can complete the withdrawal and will receive any withdrawn funds or shares upon completing the withdrawal
     * @param undelegateIfPossible If this param is marked as 'true' *and the withdrawal will result in `msg.sender` having no shares in any Strategy,*
     * then this function will also make an internal call to `undelegate(msg.sender)` to undelegate the `msg.sender`.
     * @return The 'withdrawalRoot' of the newly created Queued Withdrawal
     * @dev Strategies are removed from `stakerStrategyList` by swapping the last entry with the entry to be removed, then
     * popping off the last entry in `stakerStrategyList`. The simplest way to calculate the correct `strategyIndexes` to input
     * is to order the strategies *for which `msg.sender` is withdrawing 100% of their shares* from highest index in
     * `stakerStrategyList` to lowest index
     * @dev Note that if the withdrawal includes shares in the enshrined 'beaconChainETH' strategy, then it must *only* include shares in this strategy, and
     * `withdrawer` must match the caller's address. The first condition is because slashing of queued withdrawals cannot be guaranteed 
     * for Beacon Chain ETH (since we cannot trigger a withdrawal from the beacon chain through a smart contract) and the second condition is because shares in
     * the enshrined 'beaconChainETH' strategy technically represent non-fungible positions (deposits to the Beacon Chain, each pointed at a specific EigenPod).
     */
    function queueWithdrawal(
        uint256[] calldata strategyIndexes,
        IStrategy[] calldata strategies,
        uint256[] calldata shares,
        address withdrawer,
        bool undelegateIfPossible
    )
        external returns(bytes32);
        
    /**
     * @notice Used to complete the specified `queuedWithdrawal`. The function caller must match `queuedWithdrawal.withdrawer`
     * @param queuedWithdrawal The QueuedWithdrawal to complete.
     * @param tokens Array in which the i-th entry specifies the `token` input to the 'withdraw' function of the i-th Strategy in the `strategies` array
     * of the `queuedWithdrawal`. This input can be provided with zero length if `receiveAsTokens` is set to 'false' (since in that case, this input will be unused)
     * @param middlewareTimesIndex is the index in the operator that the staker who triggered the withdrawal was delegated to's middleware times array
     * @param receiveAsTokens If true, the shares specified in the queued withdrawal will be withdrawn from the specified strategies themselves
     * and sent to the caller, through calls to `queuedWithdrawal.strategies[i].withdraw`. If false, then the shares in the specified strategies
     * will simply be transferred to the caller directly.
     * @dev middlewareTimesIndex should be calculated off chain before calling this function by finding the first index that satisfies `slasher.canWithdraw`
     */
    function completeQueuedWithdrawal(
        QueuedWithdrawal calldata queuedWithdrawal,
        IERC20[] calldata tokens,
        uint256 middlewareTimesIndex,
        bool receiveAsTokens
    )
        external;
    
    /**
     * @notice Used to complete the specified `queuedWithdrawals`. The function caller must match `queuedWithdrawals[...].withdrawer`
     * @param queuedWithdrawals The QueuedWithdrawals to complete.
     * @param tokens Array of tokens for each QueuedWithdrawal. See `completeQueuedWithdrawal` for the usage of a single array.
     * @param middlewareTimesIndexes One index to reference per QueuedWithdrawal. See `completeQueuedWithdrawal` for the usage of a single index.
     * @param receiveAsTokens If true, the shares specified in the queued withdrawal will be withdrawn from the specified strategies themselves
     * and sent to the caller, through calls to `queuedWithdrawal.strategies[i].withdraw`. If false, then the shares in the specified strategies
     * will simply be transferred to the caller directly.
     * @dev Array-ified version of `completeQueuedWithdrawal`
     * @dev middlewareTimesIndex should be calculated off chain before calling this function by finding the first index that satisfies `slasher.canWithdraw`
     */
    function completeQueuedWithdrawals(
        QueuedWithdrawal[] calldata queuedWithdrawals,
        IERC20[][] calldata tokens,
        uint256[] calldata middlewareTimesIndexes,
        bool[] calldata receiveAsTokens
    )
        external;

    /**
     * @notice Slashes the shares of a 'frozen' operator (or a staker delegated to one)
     * @param slashedAddress is the frozen address that is having its shares slashed
     * @param recipient is the address that will receive the slashed funds, which could e.g. be a harmed party themself,
     * or a MerkleDistributor-type contract that further sub-divides the slashed funds.
     * @param strategies Strategies to slash
     * @param shareAmounts The amount of shares to slash in each of the provided `strategies`
     * @param tokens The tokens to use as input to the `withdraw` function of each of the provided `strategies`
     * @param strategyIndexes is a list of the indices in `stakerStrategyList[msg.sender]` that correspond to the strategies
     * for which `msg.sender` is withdrawing 100% of their shares
     * @param recipient The slashed funds are withdrawn as tokens to this address.
     * @dev strategies are removed from `stakerStrategyList` by swapping the last entry with the entry to be removed, then
     * popping off the last entry in `stakerStrategyList`. The simplest way to calculate the correct `strategyIndexes` to input
     * is to order the strategies *for which `msg.sender` is withdrawing 100% of their shares* from highest index in
     * `stakerStrategyList` to lowest index
     */
    function slashShares(
        address slashedAddress,
        address recipient,
        IStrategy[] calldata strategies,
        IERC20[] calldata tokens,
        uint256[] calldata strategyIndexes,
        uint256[] calldata shareAmounts
    )
        external;

    /**
     * @notice Slashes an existing queued withdrawal that was created by a 'frozen' operator (or a staker delegated to one)
     * @param recipient The funds in the slashed withdrawal are withdrawn as tokens to this address.
     * @param queuedWithdrawal The previously queued withdrawal to be slashed
     * @param tokens Array in which the i-th entry specifies the `token` input to the 'withdraw' function of the i-th Strategy in the `strategies`
     * array of the `queuedWithdrawal`.
     * @param indicesToSkip Optional input parameter -- indices in the `strategies` array to skip (i.e. not call the 'withdraw' function on). This input exists
     * so that, e.g., if the slashed QueuedWithdrawal contains a malicious strategy in the `strategies` array which always reverts on calls to its 'withdraw' function,
     * then the malicious strategy can be skipped (with the shares in effect "burned"), while the non-malicious strategies are still called as normal.
     */
    function slashQueuedWithdrawal(address recipient, QueuedWithdrawal calldata queuedWithdrawal, IERC20[] calldata tokens, uint256[] calldata indicesToSkip)
        external;

    /// @notice Returns the keccak256 hash of `queuedWithdrawal`.
    function calculateWithdrawalRoot(
        QueuedWithdrawal memory queuedWithdrawal
    )
        external
        pure
        returns (bytes32);

    /**
     * @notice Owner-only function that adds the provided Strategies to the 'whitelist' of strategies that stakers can deposit into
     * @param strategiesToWhitelist Strategies that will be added to the `strategyIsWhitelistedForDeposit` mapping (if they aren't in it already)
    */
    function addStrategiesToDepositWhitelist(IStrategy[] calldata strategiesToWhitelist) external;

    /**
     * @notice Owner-only function that removes the provided Strategies from the 'whitelist' of strategies that stakers can deposit into
     * @param strategiesToRemoveFromWhitelist Strategies that will be removed to the `strategyIsWhitelistedForDeposit` mapping (if they are in it)
    */
    function removeStrategiesFromDepositWhitelist(IStrategy[] calldata strategiesToRemoveFromWhitelist) external;

    /// @notice Returns the single, central Delegation contract of EigenLayer
    function delegation() external view returns (IDelegationManager);

    /// @notice Returns the single, central Slasher contract of EigenLayer
    function slasher() external view returns (ISlasher);

    /// @notice returns the enshrined, virtual 'beaconChainETH' Strategy
    function beaconChainETHStrategy() external view returns (IStrategy);

    /// @notice Returns the number of blocks that must pass between the time a withdrawal is queued and the time it can be completed
    function withdrawalDelayBlocks() external view returns (uint256);
}

// SPDX-License-Identifier: BUSL-1.1

pragma solidity =0.8.12;

import "../interfaces/IPausable.sol";

/**
 * @title Adds pausability to a contract, with pausing & unpausing controlled by the `pauser` and `unpauser` of a PauserRegistry contract.
 * @author Layr Labs, Inc.
 * @notice Terms of Service: https://docs.eigenlayer.xyz/overview/terms-of-service
 * @notice Contracts that inherit from this contract may define their own `pause` and `unpause` (and/or related) functions.
 * These functions should be permissioned as "onlyPauser" which defers to a `PauserRegistry` for determining access control.
 * @dev Pausability is implemented using a uint256, which allows up to 256 different single bit-flags; each bit can potentially pause different functionality.
 * Inspiration for this was taken from the NearBridge design here https://etherscan.io/address/0x3FEFc5A4B1c02f21cBc8D3613643ba0635b9a873#code.
 * For the `pause` and `unpause` functions we've implemented, if you pause, you can only flip (any number of) switches to on/1 (aka "paused"), and if you unpause,
 * you can only flip (any number of) switches to off/0 (aka "paused").
 * If you want a pauseXYZ function that just flips a single bit / "pausing flag", it will:
 * 1) 'bit-wise and' (aka `&`) a flag with the current paused state (as a uint256)
 * 2) update the paused state to this new value
 * @dev We note as well that we have chosen to identify flags by their *bit index* as opposed to their numerical value, so, e.g. defining `DEPOSITS_PAUSED = 3`
 * indicates specifically that if the *third bit* of `_paused` is flipped -- i.e. it is a '1' -- then deposits should be paused
 */
contract Pausable is IPausable {
    /// @notice Address of the `PauserRegistry` contract that this contract defers to for determining access control (for pausing).
    IPauserRegistry public pauserRegistry;

    /// @dev whether or not the contract is currently paused
    uint256 private _paused;

    uint256 constant internal UNPAUSE_ALL = 0;
    uint256 constant internal PAUSE_ALL = type(uint256).max;

    /// @notice Emitted when the `pauserRegistry` is set to `newPauserRegistry`.
    event PauserRegistrySet(IPauserRegistry pauserRegistry, IPauserRegistry newPauserRegistry);

    /// @notice Emitted when the pause is triggered by `account`, and changed to `newPausedStatus`.
    event Paused(address indexed account, uint256 newPausedStatus);

    /// @notice Emitted when the pause is lifted by `account`, and changed to `newPausedStatus`.
    event Unpaused(address indexed account, uint256 newPausedStatus);

    /// @notice
    modifier onlyPauser() {
        require(pauserRegistry.isPauser(msg.sender), "msg.sender is not permissioned as pauser");
        _;
    }

    modifier onlyUnpauser() {
        require(msg.sender == pauserRegistry.unpauser(), "msg.sender is not permissioned as unpauser");
        _;
    }

    /// @notice Throws if the contract is paused, i.e. if any of the bits in `_paused` is flipped to 1.
    modifier whenNotPaused() {
        require(_paused == 0, "Pausable: contract is paused");
        _;
    }

    /// @notice Throws if the `indexed`th bit of `_paused` is 1, i.e. if the `index`th pause switch is flipped.
    modifier onlyWhenNotPaused(uint8 index) {
        require(!paused(index), "Pausable: index is paused");
        _;
    }

    /// @notice One-time function for setting the `pauserRegistry` and initializing the value of `_paused`.
    function _initializePauser(IPauserRegistry _pauserRegistry, uint256 initPausedStatus) internal {
        require(
            address(pauserRegistry) == address(0) && address(_pauserRegistry) != address(0),
            "Pausable._initializePauser: _initializePauser() can only be called once"
        );
        _paused = initPausedStatus;
        emit Paused(msg.sender, initPausedStatus);
        _setPauserRegistry(_pauserRegistry);
    }

    /**
     * @notice This function is used to pause an EigenLayer contract's functionality.
     * It is permissioned to the `pauser` address, which is expected to be a low threshold multisig.
     * @param newPausedStatus represents the new value for `_paused` to take, which means it may flip several bits at once.
     * @dev This function can only pause functionality, and thus cannot 'unflip' any bit in `_paused` from 1 to 0.
     */
    function pause(uint256 newPausedStatus) external onlyPauser {
        // verify that the `newPausedStatus` does not *unflip* any bits (i.e. doesn't unpause anything, all 1 bits remain)
        require((_paused & newPausedStatus) == _paused, "Pausable.pause: invalid attempt to unpause functionality");
        _paused = newPausedStatus;
        emit Paused(msg.sender, newPausedStatus);
    }

    /**
     * @notice Alias for `pause(type(uint256).max)`.
     */
    function pauseAll() external onlyPauser {
        _paused = type(uint256).max;
        emit Paused(msg.sender, type(uint256).max);
    }

    /**
     * @notice This function is used to unpause an EigenLayer contract's functionality.
     * It is permissioned to the `unpauser` address, which is expected to be a high threshold multisig or governance contract.
     * @param newPausedStatus represents the new value for `_paused` to take, which means it may flip several bits at once.
     * @dev This function can only unpause functionality, and thus cannot 'flip' any bit in `_paused` from 0 to 1.
     */
    function unpause(uint256 newPausedStatus) external onlyUnpauser {
        // verify that the `newPausedStatus` does not *flip* any bits (i.e. doesn't pause anything, all 0 bits remain)
        require(((~_paused) & (~newPausedStatus)) == (~_paused), "Pausable.unpause: invalid attempt to pause functionality");
        _paused = newPausedStatus;
        emit Unpaused(msg.sender, newPausedStatus);
    }

    /// @notice Returns the current paused status as a uint256.
    function paused() public view virtual returns (uint256) {
        return _paused;
    }

    /// @notice Returns 'true' if the `indexed`th bit of `_paused` is 1, and 'false' otherwise
    function paused(uint8 index) public view virtual returns (bool) {
        uint256 mask = 1 << index;
        return ((_paused & mask) == mask);
    }

    /// @notice Allows the unpauser to set a new pauser registry
    function setPauserRegistry(IPauserRegistry newPauserRegistry) external onlyUnpauser {
        _setPauserRegistry(newPauserRegistry);
    }

    /// internal function for setting pauser registry
    function _setPauserRegistry(IPauserRegistry newPauserRegistry) internal {
        require(address(newPauserRegistry) != address(0), "Pausable._setPauserRegistry: newPauserRegistry cannot be the zero address");
        emit PauserRegistrySet(pauserRegistry, newPauserRegistry);
        pauserRegistry = newPauserRegistry;
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[48] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/draft-IERC20Permit.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));
        }
    }

    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @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 (last updated v4.7.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.2;

import "../../utils/AddressUpgradeable.sol";

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     * @custom:oz-retyped-from bool
     */
    uint8 private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint8 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`.
     */
    modifier initializer() {
        bool isTopLevelCall = !_initializing;
        require(
            (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
            "Initializable: contract is already initialized"
        );
        _initialized = 1;
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original
     * initialization step. This is essential to configure modules that are added through upgrades and that require
     * initialization.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     */
    modifier reinitializer(uint8 version) {
        require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
        _initialized = version;
        _initializing = true;
        _;
        _initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     */
    function _disableInitializers() internal virtual {
        require(!_initializing, "Initializable: contract is initializing");
        if (_initialized < type(uint8).max) {
            _initialized = type(uint8).max;
            emit Initialized(type(uint8).max);
        }
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity =0.8.12;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

/**
 * @title Minimal interface for an `Strategy` contract.
 * @author Layr Labs, Inc.
 * @notice Terms of Service: https://docs.eigenlayer.xyz/overview/terms-of-service
 * @notice Custom `Strategy` implementations may expand extensively on this interface.
 */
interface IStrategy {
    /**
     * @notice Used to deposit tokens into this Strategy
     * @param token is the ERC20 token being deposited
     * @param amount is the amount of token being deposited
     * @dev This function is only callable by the strategyManager contract. It is invoked inside of the strategyManager's
     * `depositIntoStrategy` function, and individual share balances are recorded in the strategyManager as well.
     * @return newShares is the number of new shares issued at the current exchange ratio.
     */
    function deposit(IERC20 token, uint256 amount) external returns (uint256);

    /**
     * @notice Used to withdraw tokens from this Strategy, to the `depositor`'s address
     * @param depositor is the address to receive the withdrawn funds
     * @param token is the ERC20 token being transferred out
     * @param amountShares is the amount of shares being withdrawn
     * @dev This function is only callable by the strategyManager contract. It is invoked inside of the strategyManager's
     * other functions, and individual share balances are recorded in the strategyManager as well.
     */
    function withdraw(address depositor, IERC20 token, uint256 amountShares) external;

    /**
     * @notice Used to convert a number of shares to the equivalent amount of underlying tokens for this strategy.
     * @notice In contrast to `sharesToUnderlyingView`, this function **may** make state modifications
     * @param amountShares is the amount of shares to calculate its conversion into the underlying token
     * @return The amount of underlying tokens corresponding to the input `amountShares`
     * @dev Implementation for these functions in particular may vary significantly for different strategies
     */
    function sharesToUnderlying(uint256 amountShares) external returns (uint256);

    /**
     * @notice Used to convert an amount of underlying tokens to the equivalent amount of shares in this strategy.
     * @notice In contrast to `underlyingToSharesView`, this function **may** make state modifications
     * @param amountUnderlying is the amount of `underlyingToken` to calculate its conversion into strategy shares
     * @return The amount of underlying tokens corresponding to the input `amountShares`
     * @dev Implementation for these functions in particular may vary significantly for different strategies
     */
    function underlyingToShares(uint256 amountUnderlying) external returns (uint256);

    /**
     * @notice convenience function for fetching the current underlying value of all of the `user`'s shares in
     * this strategy. In contrast to `userUnderlyingView`, this function **may** make state modifications
     */
    function userUnderlying(address user) external returns (uint256);

     /**
     * @notice Used to convert a number of shares to the equivalent amount of underlying tokens for this strategy.
     * @notice In contrast to `sharesToUnderlying`, this function guarantees no state modifications
     * @param amountShares is the amount of shares to calculate its conversion into the underlying token
     * @return The amount of shares corresponding to the input `amountUnderlying`
     * @dev Implementation for these functions in particular may vary significantly for different strategies
     */
    function sharesToUnderlyingView(uint256 amountShares) external view returns (uint256);

    /**
     * @notice Used to convert an amount of underlying tokens to the equivalent amount of shares in this strategy.
     * @notice In contrast to `underlyingToShares`, this function guarantees no state modifications
     * @param amountUnderlying is the amount of `underlyingToken` to calculate its conversion into strategy shares
     * @return The amount of shares corresponding to the input `amountUnderlying`
     * @dev Implementation for these functions in particular may vary significantly for different strategies
     */
    function underlyingToSharesView(uint256 amountUnderlying) external view returns (uint256);

    /**
     * @notice convenience function for fetching the current underlying value of all of the `user`'s shares in
     * this strategy. In contrast to `userUnderlying`, this function guarantees no state modifications
     */
    function userUnderlyingView(address user) external view returns (uint256);

    /// @notice The underlying token for shares in this Strategy
    function underlyingToken() external view returns (IERC20);

    /// @notice The total number of extant shares in this Strategy
    function totalShares() external view returns (uint256);

    /// @notice Returns either a brief string explaining the strategy's goal & purpose, or a link to metadata that explains in more detail.
    function explanation() external view returns (string memory);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity =0.8.12;

/**
 * @title Interface for the primary 'slashing' contract for EigenLayer.
 * @author Layr Labs, Inc.
 * @notice Terms of Service: https://docs.eigenlayer.xyz/overview/terms-of-service
 * @notice See the `Slasher` contract itself for implementation details.
 */
interface ISlasher {
    // struct used to store information about the current state of an operator's obligations to middlewares they are serving
    struct MiddlewareTimes {
        // The update block for the middleware whose most recent update was earliest, i.e. the 'stalest' update out of all middlewares the operator is serving
        uint32 stalestUpdateBlock;
        // The latest 'serveUntilBlock' from all of the middleware that the operator is serving
        uint32 latestServeUntilBlock;
    }

    // struct used to store details relevant to a single middleware that an operator has opted-in to serving
    struct MiddlewareDetails {
        // the block before which the contract is allowed to slash the user
        uint32 contractCanSlashOperatorUntilBlock;
        // the block at which the middleware's view of the operator's stake was most recently updated
        uint32 latestUpdateBlock;
    }

    /**
     * @notice Gives the `contractAddress` permission to slash the funds of the caller.
     * @dev Typically, this function must be called prior to registering for a middleware.
     */
    function optIntoSlashing(address contractAddress) external;

    /**
     * @notice Used for 'slashing' a certain operator.
     * @param toBeFrozen The operator to be frozen.
     * @dev Technically the operator is 'frozen' (hence the name of this function), and then subject to slashing pending a decision by a human-in-the-loop.
     * @dev The operator must have previously given the caller (which should be a contract) the ability to slash them, through a call to `optIntoSlashing`.
     */
    function freezeOperator(address toBeFrozen) external;
    
    /**
     * @notice Removes the 'frozen' status from each of the `frozenAddresses`
     * @dev Callable only by the contract owner (i.e. governance).
     */
    function resetFrozenStatus(address[] calldata frozenAddresses) external;

    /**
     * @notice this function is a called by middlewares during an operator's registration to make sure the operator's stake at registration 
     *         is slashable until serveUntil
     * @param operator the operator whose stake update is being recorded
     * @param serveUntilBlock the block until which the operator's stake at the current block is slashable
     * @dev adds the middleware's slashing contract to the operator's linked list
     */
    function recordFirstStakeUpdate(address operator, uint32 serveUntilBlock) external;

    /**
     * @notice this function is a called by middlewares during a stake update for an operator (perhaps to free pending withdrawals)
     *         to make sure the operator's stake at updateBlock is slashable until serveUntil
     * @param operator the operator whose stake update is being recorded
     * @param updateBlock the block for which the stake update is being recorded
     * @param serveUntilBlock the block until which the operator's stake at updateBlock is slashable
     * @param insertAfter the element of the operators linked list that the currently updating middleware should be inserted after
     * @dev insertAfter should be calculated offchain before making the transaction that calls this. this is subject to race conditions, 
     *      but it is anticipated to be rare and not detrimental.
     */
    function recordStakeUpdate(address operator, uint32 updateBlock, uint32 serveUntilBlock, uint256 insertAfter) external;

    /**
     * @notice this function is a called by middlewares during an operator's deregistration to make sure the operator's stake at deregistration 
     *         is slashable until serveUntil
     * @param operator the operator whose stake update is being recorded
     * @param serveUntilBlock the block until which the operator's stake at the current block is slashable
     * @dev removes the middleware's slashing contract to the operator's linked list and revokes the middleware's (i.e. caller's) ability to
     * slash `operator` once `serveUntil` is reached
     */
    function recordLastStakeUpdateAndRevokeSlashingAbility(address operator, uint32 serveUntilBlock) external;

    /**
     * @notice Used to determine whether `staker` is actively 'frozen'. If a staker is frozen, then they are potentially subject to
     * slashing of their funds, and cannot cannot deposit or withdraw from the strategyManager until the slashing process is completed
     * and the staker's status is reset (to 'unfrozen').
     * @param staker The staker of interest.
     * @return Returns 'true' if `staker` themselves has their status set to frozen, OR if the staker is delegated
     * to an operator who has their status set to frozen. Otherwise returns 'false'.
     */
    function isFrozen(address staker) external view returns (bool);

    /// @notice Returns true if `slashingContract` is currently allowed to slash `toBeSlashed`.
    function canSlash(address toBeSlashed, address slashingContract) external view returns (bool);

    /// @notice Returns the block until which `serviceContract` is allowed to slash the `operator`.
    function contractCanSlashOperatorUntilBlock(address operator, address serviceContract) external view returns (uint32);

    /// @notice Returns the block at which the `serviceContract` last updated its view of the `operator`'s stake
    function latestUpdateBlock(address operator, address serviceContract) external view returns (uint32);

    /// @notice A search routine for finding the correct input value of `insertAfter` to `recordStakeUpdate` / `_updateMiddlewareList`.
    function getCorrectValueForInsertAfter(address operator, uint32 updateBlock) external view returns (uint256);

    /**
     * @notice Returns 'true' if `operator` can currently complete a withdrawal started at the `withdrawalStartBlock`, with `middlewareTimesIndex` used
     * to specify the index of a `MiddlewareTimes` struct in the operator's list (i.e. an index in `operatorToMiddlewareTimes[operator]`). The specified
     * struct is consulted as proof of the `operator`'s ability (or lack thereof) to complete the withdrawal.
     * This function will return 'false' if the operator cannot currently complete a withdrawal started at the `withdrawalStartBlock`, *or* in the event
     * that an incorrect `middlewareTimesIndex` is supplied, even if one or more correct inputs exist.
     * @param operator Either the operator who queued the withdrawal themselves, or if the withdrawing party is a staker who delegated to an operator,
     * this address is the operator *who the staker was delegated to* at the time of the `withdrawalStartBlock`.
     * @param withdrawalStartBlock The block number at which the withdrawal was initiated.
     * @param middlewareTimesIndex Indicates an index in `operatorToMiddlewareTimes[operator]` to consult as proof of the `operator`'s ability to withdraw
     * @dev The correct `middlewareTimesIndex` input should be computable off-chain.
     */
    function canWithdraw(address operator, uint32 withdrawalStartBlock, uint256 middlewareTimesIndex) external returns(bool);

    /**
     * operator => 
     *  [
     *      (
     *          the least recent update block of all of the middlewares it's serving/served, 
     *          latest time that the stake bonded at that update needed to serve until
     *      )
     *  ]
     */
    function operatorToMiddlewareTimes(address operator, uint256 arrayIndex) external view returns (MiddlewareTimes memory);

    /// @notice Getter function for fetching `operatorToMiddlewareTimes[operator].length`
    function middlewareTimesLength(address operator) external view returns (uint256);

    /// @notice Getter function for fetching `operatorToMiddlewareTimes[operator][index].stalestUpdateBlock`.
    function getMiddlewareTimesIndexBlock(address operator, uint32 index) external view returns(uint32);

    /// @notice Getter function for fetching `operatorToMiddlewareTimes[operator][index].latestServeUntil`.
    function getMiddlewareTimesIndexServeUntilBlock(address operator, uint32 index) external view returns(uint32);

    /// @notice Getter function for fetching `_operatorToWhitelistedContractsByUpdate[operator].size`.
    function operatorWhitelistedContractsLinkedListSize(address operator) external view returns (uint256);

    /// @notice Getter function for fetching a single node in the operator's linked list (`_operatorToWhitelistedContractsByUpdate[operator]`).
    function operatorWhitelistedContractsLinkedListEntry(address operator, address node) external view returns (bool, uint256, uint256);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity =0.8.12;

import "./IDelegationTerms.sol";

/**
 * @title The interface for the primary delegation contract for EigenLayer.
 * @author Layr Labs, Inc.
 * @notice Terms of Service: https://docs.eigenlayer.xyz/overview/terms-of-service
 * @notice  This is the contract for delegation in EigenLayer. The main functionalities of this contract are
 * - enabling anyone to register as an operator in EigenLayer
 * - allowing new operators to provide a DelegationTerms-type contract, which may mediate their interactions with stakers who delegate to them
 * - enabling any staker to delegate its stake to the operator of its choice
 * - enabling a staker to undelegate its assets from an operator (performed as part of the withdrawal process, initiated through the StrategyManager)
 */
interface IDelegationManager {

    /**
     * @notice This will be called by an operator to register itself as an operator that stakers can choose to delegate to.
     * @param dt is the `DelegationTerms` contract that the operator has for those who delegate to them.
     * @dev An operator can set `dt` equal to their own address (or another EOA address), in the event that they want to split payments
     * in a more 'trustful' manner.
     * @dev In the present design, once set, there is no way for an operator to ever modify the address of their DelegationTerms contract.
     */
    function registerAsOperator(IDelegationTerms dt) external;

    /**
     *  @notice This will be called by a staker to delegate its assets to some operator.
     *  @param operator is the operator to whom staker (msg.sender) is delegating its assets
     */
    function delegateTo(address operator) external;

    /**
     * @notice Delegates from `staker` to `operator`.
     * @dev requires that:
     * 1) if `staker` is an EOA, then `signature` is valid ECDSA signature from `staker`, indicating their intention for this action
     * 2) if `staker` is a contract, then `signature` must will be checked according to EIP-1271
     */
    function delegateToBySignature(address staker, address operator, uint256 expiry, bytes memory signature) external;

    /**
     * @notice Undelegates `staker` from the operator who they are delegated to.
     * @notice Callable only by the StrategyManager
     * @dev Should only ever be called in the event that the `staker` has no active deposits in EigenLayer.
     */
    function undelegate(address staker) external;

    /// @notice returns the address of the operator that `staker` is delegated to.
    function delegatedTo(address staker) external view returns (address);

    /// @notice returns the DelegationTerms of the `operator`, which may mediate their interactions with stakers who delegate to them.
    function delegationTerms(address operator) external view returns (IDelegationTerms);

    /// @notice returns the total number of shares in `strategy` that are delegated to `operator`.
    function operatorShares(address operator, IStrategy strategy) external view returns (uint256);

    /**
     * @notice Increases the `staker`'s delegated shares in `strategy` by `shares, typically called when the staker has further deposits into EigenLayer
     * @dev Callable only by the StrategyManager
     */
    function increaseDelegatedShares(address staker, IStrategy strategy, uint256 shares) external;

    /**
     * @notice Decreases the `staker`'s delegated shares in each entry of `strategies` by its respective `shares[i]`, typically called when the staker withdraws from EigenLayer
     * @dev Callable only by the StrategyManager
     */
    function decreaseDelegatedShares(
        address staker,
        IStrategy[] calldata strategies,
        uint256[] calldata shares
    ) external;

    /// @notice Returns 'true' if `staker` *is* actively delegated, and 'false' otherwise.
    function isDelegated(address staker) external view returns (bool);

    /// @notice Returns 'true' if `staker` is *not* actively delegated, and 'false' otherwise.
    function isNotDelegated(address staker) external view returns (bool);

    /// @notice Returns if an operator can be delegated to, i.e. it has called `registerAsOperator`.
    function isOperator(address operator) external view returns (bool);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity =0.8.12;

import "../interfaces/IPauserRegistry.sol";

/**
 * @title Adds pausability to a contract, with pausing & unpausing controlled by the `pauser` and `unpauser` of a PauserRegistry contract.
 * @author Layr Labs, Inc.
 * @notice Terms of Service: https://docs.eigenlayer.xyz/overview/terms-of-service
 * @notice Contracts that inherit from this contract may define their own `pause` and `unpause` (and/or related) functions.
 * These functions should be permissioned as "onlyPauser" which defers to a `PauserRegistry` for determining access control.
 * @dev Pausability is implemented using a uint256, which allows up to 256 different single bit-flags; each bit can potentially pause different functionality.
 * Inspiration for this was taken from the NearBridge design here https://etherscan.io/address/0x3FEFc5A4B1c02f21cBc8D3613643ba0635b9a873#code.
 * For the `pause` and `unpause` functions we've implemented, if you pause, you can only flip (any number of) switches to on/1 (aka "paused"), and if you unpause,
 * you can only flip (any number of) switches to off/0 (aka "paused").
 * If you want a pauseXYZ function that just flips a single bit / "pausing flag", it will:
 * 1) 'bit-wise and' (aka `&`) a flag with the current paused state (as a uint256)
 * 2) update the paused state to this new value
 * @dev We note as well that we have chosen to identify flags by their *bit index* as opposed to their numerical value, so, e.g. defining `DEPOSITS_PAUSED = 3`
 * indicates specifically that if the *third bit* of `_paused` is flipped -- i.e. it is a '1' -- then deposits should be paused
 */

interface IPausable {
    /// @notice Address of the `PauserRegistry` contract that this contract defers to for determining access control (for pausing).
    function pauserRegistry() external view returns (IPauserRegistry); 

    /**
     * @notice This function is used to pause an EigenLayer contract's functionality.
     * It is permissioned to the `pauser` address, which is expected to be a low threshold multisig.
     * @param newPausedStatus represents the new value for `_paused` to take, which means it may flip several bits at once.
     * @dev This function can only pause functionality, and thus cannot 'unflip' any bit in `_paused` from 1 to 0.
     */
    function pause(uint256 newPausedStatus) external;

    /**
     * @notice Alias for `pause(type(uint256).max)`.
     */
    function pauseAll() external;

    /**
     * @notice This function is used to unpause an EigenLayer contract's functionality.
     * It is permissioned to the `unpauser` address, which is expected to be a high threshold multisig or governance contract.
     * @param newPausedStatus represents the new value for `_paused` to take, which means it may flip several bits at once.
     * @dev This function can only unpause functionality, and thus cannot 'flip' any bit in `_paused` from 0 to 1.
     */
    function unpause(uint256 newPausedStatus) external;

    /// @notice Returns the current paused status as a uint256.
    function paused() external view returns (uint256);

    /// @notice Returns 'true' if the `indexed`th bit of `_paused` is 1, and 'false' otherwise
    function paused(uint8 index) external view returns (bool);

    /// @notice Allows the unpauser to set a new pauser registry
    function setPauserRegistry(IPauserRegistry newPauserRegistry) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

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

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

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

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

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

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

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

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

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

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

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

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

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

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly
                /// @solidity memory-safe-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

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

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

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

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

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

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

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

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

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

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

    /**
     * @dev 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
                /// @solidity memory-safe-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity =0.8.12;

import "./IStrategy.sol";

/**
 * @title Abstract interface for a contract that helps structure the delegation relationship.
 * @author Layr Labs, Inc.
 * @notice Terms of Service: https://docs.eigenlayer.xyz/overview/terms-of-service
 * @notice The gas budget provided to this contract in calls from EigenLayer contracts is limited.
 */
interface IDelegationTerms {
    function payForService(IERC20 token, uint256 amount) external payable;

    function onDelegationWithdrawn(
        address delegator,
        IStrategy[] memory stakerStrategyList,
        uint256[] memory stakerShares
    ) external returns(bytes memory);

    function onDelegationReceived(
        address delegator,
        IStrategy[] memory stakerStrategyList,
        uint256[] memory stakerShares
    ) external returns(bytes memory);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity =0.8.12;

/**
 * @title Interface for the `PauserRegistry` contract.
 * @author Layr Labs, Inc.
 * @notice Terms of Service: https://docs.eigenlayer.xyz/overview/terms-of-service
 */
interface IPauserRegistry {
    /// @notice Mapping of addresses to whether they hold the pauser role.
    function isPauser(address pauser) external view returns (bool);

    /// @notice Unique address that holds the unpauser role. Capable of changing *both* the pauser and unpauser addresses.
    function unpauser() external view returns (address);
}

{
  "remappings": [
    "@openzeppelin-upgrades/=lib/openzeppelin-contracts-upgradeable/",
    "@openzeppelin/=lib/openzeppelin-contracts/",
    "ds-test/=lib/ds-test/src/",
    "forge-std/=lib/forge-std/src/",
    "openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract IStrategyManager","name":"_strategyManager","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"version","type":"uint8"}],"name":"Initialized","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"previousValue","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newValue","type":"uint256"}],"name":"MaxPerDepositUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"previousValue","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newValue","type":"uint256"}],"name":"MaxTotalDepositsUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":false,"internalType":"uint256","name":"newPausedStatus","type":"uint256"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"contract IPauserRegistry","name":"pauserRegistry","type":"address"},{"indexed":false,"internalType":"contract IPauserRegistry","name":"newPauserRegistry","type":"address"}],"name":"PauserRegistrySet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":false,"internalType":"uint256","name":"newPausedStatus","type":"uint256"}],"name":"Unpaused","type":"event"},{"inputs":[{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"deposit","outputs":[{"internalType":"uint256","name":"newShares","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"explanation","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"getTVLLimits","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_maxPerDeposit","type":"uint256"},{"internalType":"uint256","name":"_maxTotalDeposits","type":"uint256"},{"internalType":"contract IERC20","name":"_underlyingToken","type":"address"},{"internalType":"contract IPauserRegistry","name":"_pauserRegistry","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"_underlyingToken","type":"address"},{"internalType":"contract IPauserRegistry","name":"_pauserRegistry","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"maxPerDeposit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxTotalDeposits","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"newPausedStatus","type":"uint256"}],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"pauseAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint8","name":"index","type":"uint8"}],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pauserRegistry","outputs":[{"internalType":"contract IPauserRegistry","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IPauserRegistry","name":"newPauserRegistry","type":"address"}],"name":"setPauserRegistry","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"newMaxPerDeposit","type":"uint256"},{"internalType":"uint256","name":"newMaxTotalDeposits","type":"uint256"}],"name":"setTVLLimits","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"shares","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountShares","type":"uint256"}],"name":"sharesToUnderlying","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountShares","type":"uint256"}],"name":"sharesToUnderlyingView","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"strategyManager","outputs":[{"internalType":"contract IStrategyManager","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalShares","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountUnderlying","type":"uint256"}],"name":"underlyingToShares","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountUnderlying","type":"uint256"}],"name":"underlyingToSharesView","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"underlyingToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"newPausedStatus","type":"uint256"}],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"userUnderlying","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"userUnderlyingView","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"depositor","type":"address"},{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"uint256","name":"amountShares","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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000000000000000000000000858646372cc42e1a627fce94aa7a7033e7cf075a

-----Decoded View---------------
Arg [0] : _strategyManager (address): 0x858646372CC42E1A627fcE94aa7A7033e7CF075A

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000858646372cc42e1a627fce94aa7a7033e7cf075a