ControllerV3

{{
  "language": "Solidity",
  "sources": {
    "src/core/ControllerV3.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

import "../interfaces/IController.sol";
import "../interfaces/IStrategyAdapter.sol";
import "../interfaces/IRegistry.sol";
import "../interfaces/IAPYOracle.sol";
// import "../security/TimelockController.sol"; // No longer needed after security fix
import {IERC20 as IERC20OZ} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC20} from "lib/forge-std/src/interfaces/IERC20.sol";
import {ReentrancyGuard} from "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

/**
 * @title ControllerV3
 * @notice Enhanced Controller with keeper role for automated operations
 * @dev Adds keeper management for off-chain agents while maintaining security
 */
contract ControllerV3 is IController, IRegistry, ReentrancyGuard {
    using SafeERC20 for IERC20OZ;
    
    // ============ State Variables ============
    
    address public owner;
    address public pendingOwner;
    address public vault;
    address public apyOracle;
    address public emergencyReceiver;
    bool public paused;
    uint256 public rebalanceThreshold;
    
    // Keeper management (NEW)
    mapping(address => bool) public keepers;
    uint256 public keeperCount;
    
    // Guardian for emergency actions (SECURITY FIX: explicit storage)
    address public guardian;
    
    // Strategy management
    mapping(string => address) private strategies;
    string[] private strategyNames;
    mapping(string => bool) private strategyExists;
    
    IERC20OZ public immutable token;
    
    // ============ Events ============
    
    event OwnershipTransferInitiated(address indexed currentOwner, address indexed pendingOwner);
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    event APYOracleUpdated(address indexed oracle);
    event KeeperAdded(address indexed keeper);
    event KeeperRemoved(address indexed keeper);
    event EmergencyKeeperRemoval(address indexed keeper, address indexed remover);
    event RebalanceExecuted(address indexed executor, string fromStrategy, string toStrategy, uint256 amount);
    event GuardianUpdated(address indexed oldGuardian, address indexed newGuardian);
    
    // ============ Modifiers ============
    
    modifier onlyOwner() {
        require(msg.sender == owner, "Controller: not owner");
        _;
    }
    
    modifier onlyOwnerOrVault() {
        require(msg.sender == owner || msg.sender == vault, "Controller: not authorized");
        _;
    }
    
    modifier onlyOwnerOrKeeper() {
        require(msg.sender == owner || keepers[msg.sender], "Controller: not owner or keeper");
        _;
    }
    
    modifier whenNotPaused() {
        require(!paused, "Controller: paused");
        _;
    }
    
    // ============ Constructor ============
    
    constructor(address _token) {
        owner = msg.sender;
        token = IERC20OZ(_token);
        rebalanceThreshold = 100; // Default 1% threshold
    }
    
    // ============ Keeper Management Functions (NEW) ============
    
    /**
     * @notice Add a keeper address that can call rebalance
     * @param keeper The address to add as keeper
     */
    function addKeeper(address keeper) external onlyOwner {
        require(keeper != address(0), "Controller: invalid keeper address");
        require(!keepers[keeper], "Controller: keeper already added");
        
        keepers[keeper] = true;
        keeperCount++;
        
        emit KeeperAdded(keeper);
    }
    
    /**
     * @notice Remove a keeper address
     * @param keeper The address to remove as keeper
     */
    function removeKeeper(address keeper) external onlyOwner {
        require(keepers[keeper], "Controller: not a keeper");
        
        keepers[keeper] = false;
        keeperCount--;
        
        emit KeeperRemoved(keeper);
    }
    
    /**
     * @notice Emergency remove a keeper (can be called by owner or guardian)
     * @param keeper The address to emergency remove as keeper
     * @dev Guardian can only remove, not add keepers for security
     * @dev SECURITY FIX: Now uses explicit guardian storage instead of dynamic lookup
     */
    function emergencyRemoveKeeper(address keeper) external {
        // SECURITY FIX: Use explicit guardian from state variable
        // This prevents any contract with guardian() function from gaining access
        require(
            msg.sender == owner || msg.sender == guardian,
            "Controller: not owner or guardian"
        );
        
        require(keepers[keeper], "Controller: not a keeper");
        
        keepers[keeper] = false;
        keeperCount--;
        
        emit KeeperRemoved(keeper);
        emit EmergencyKeeperRemoval(keeper, msg.sender);
    }
    
    /**
     * @notice Check if an address is a keeper
     * @param account The address to check
     * @return Whether the address is a keeper
     */
    function isKeeper(address account) external view returns (bool) {
        return keepers[account];
    }
    
    /**
     * @notice Set the guardian address for emergency actions
     * @param _guardian The address to set as guardian (can be address(0) to remove)
     * @dev Only owner can set guardian. Guardian can only remove keepers, not add them.
     */
    function setGuardian(address _guardian) external onlyOwner {
        address oldGuardian = guardian;
        guardian = _guardian;
        emit GuardianUpdated(oldGuardian, _guardian);
    }
    
    // ============ Ownership Functions ============
    
    /**
     * @notice Initiate ownership transfer (2-step process for safety)
     * @param newOwner The address of the new owner
     */
    function transferOwnership(address newOwner) external onlyOwner {
        require(newOwner != address(0), "Controller: new owner is zero address");
        require(newOwner != owner, "Controller: new owner is current owner");
        
        pendingOwner = newOwner;
        emit OwnershipTransferInitiated(owner, newOwner);
    }
    
    /**
     * @notice Accept ownership transfer (must be called by pending owner)
     */
    function acceptOwnership() external {
        require(msg.sender == pendingOwner, "Controller: not pending owner");
        
        address oldOwner = owner;
        owner = pendingOwner;
        pendingOwner = address(0);
        
        emit OwnershipTransferred(oldOwner, owner);
    }
    
    /**
     * @notice Cancel pending ownership transfer
     */
    function cancelOwnershipTransfer() external onlyOwner {
        require(pendingOwner != address(0), "Controller: no pending owner");
        
        pendingOwner = address(0);
        emit OwnershipTransferInitiated(owner, address(0));
    }
    
    // ============ Core Functions (Modified for Keeper) ============
    
    /**
     * @notice Rebalance funds between strategies (can be called by owner or keeper)
     * @dev Moves funds from lowest APY to highest APY strategy if threshold is met
     */
    function rebalance() external override onlyOwnerOrKeeper whenNotPaused nonReentrant {
        require(strategyNames.length >= 2, "Controller: need at least 2 strategies");
        
        // Update metrics for all strategies before rebalancing
        for (uint256 i = 0; i < strategyNames.length; i++) {
            address strategy = strategies[strategyNames[i]];
            
            // Try to update metrics, but don't fail if too soon or if it reverts
            try IStrategyAdapter(strategy).updateMetrics() {} catch {}
        }
        
        uint256 highestAPY = 0;
        uint256 lowestAPY = type(uint256).max;
        string memory highestStrategy;
        string memory lowestStrategy;
        
        // Find highest and lowest APY strategies
        for (uint256 i = 0; i < strategyNames.length; i++) {
            string memory name = strategyNames[i];
            address strategyAddress = strategies[name];
            uint256 apy;
            
            // Use APY Oracle if available, otherwise fall back to adapter's getCurrentAPY
            if (apyOracle != address(0)) {
                apy = IAPYOracle(apyOracle).getAPY(strategyAddress);
            } else {
                apy = IStrategyAdapter(strategyAddress).getCurrentAPY();
            }
            
            if (apy > highestAPY) {
                highestAPY = apy;
                highestStrategy = name;
            }
            if (apy < lowestAPY) {
                lowestAPY = apy;
                lowestStrategy = name;
            }
        }
        
        // Rebalance if threshold is met
        if (highestAPY > lowestAPY + rebalanceThreshold) {
            IStrategyAdapter lowStrategy = IStrategyAdapter(strategies[lowestStrategy]);
            IStrategyAdapter highStrategy = IStrategyAdapter(strategies[highestStrategy]);
            
            uint256 balance = lowStrategy.balanceOf(address(this));
            if (balance > 0) {
                // Withdraw from low APY strategy
                lowStrategy.withdraw(balance);
                
                // Deposit to high APY strategy
                SafeERC20.forceApprove(token, address(highStrategy), balance);
                highStrategy.deposit(balance);
                SafeERC20.forceApprove(token, address(highStrategy), 0); // Clear residual allowance

                emit RebalanceExecuted(msg.sender, lowestStrategy, highestStrategy, balance);
            }
        }
    }
    
    // ============ Strategy Management Functions ============
    
    function addStrategy(string memory name, address adapter) external override onlyOwner {
        registerStrategy(name, adapter);
    }
    
    function removeStrategy(string memory name) external override onlyOwner {
        unregisterStrategy(name);
    }
    
    function getStrategy(string memory name) external view override returns (address) {
        return getStrategyAddress(name);
    }
    
    function registerStrategy(string memory name, address adapter) public override onlyOwner {
        require(adapter != address(0), "Controller: invalid adapter");
        require(!strategyExists[name], "Controller: strategy already exists");
        
        strategies[name] = adapter;
        strategyNames.push(name);
        strategyExists[name] = true;
        
        emit StrategyAdded(name, adapter);
    }
    
    function unregisterStrategy(string memory name) public override onlyOwner {
        require(strategyExists[name], "Controller: strategy not found");
        
        address adapter = strategies[name];
        delete strategies[name];
        strategyExists[name] = false;
        
        // Remove from array
        for (uint256 i = 0; i < strategyNames.length; i++) {
            if (keccak256(bytes(strategyNames[i])) == keccak256(bytes(name))) {
                strategyNames[i] = strategyNames[strategyNames.length - 1];
                strategyNames.pop();
                break;
            }
        }
        
        emit StrategyRemoved(name, adapter);
    }
    
    function getStrategyAddress(string memory name) public view override returns (address) {
        return strategies[name];
    }
    
    function isRegisteredStrategy(string memory name) external view override returns (bool) {
        return strategyExists[name];
    }
    
    function getAllStrategies() external view override(IController, IRegistry) returns (string[] memory names, address[] memory adapters) {
        names = new string[](strategyNames.length);
        adapters = new address[](strategyNames.length);
        
        for (uint256 i = 0; i < strategyNames.length; i++) {
            names[i] = strategyNames[i];
            adapters[i] = strategies[strategyNames[i]];
        }
    }
    
    function strategyCount() external view override returns (uint256) {
        return strategyNames.length;
    }
    
    // ============ Configuration Functions ============
    
    function pause() external override onlyOwner {
        paused = true;
    }
    
    function unpause() external override onlyOwner {
        paused = false;
    }
    
    function setRebalanceThreshold(uint256 _threshold) external onlyOwner {
        require(_threshold <= 10000, "Controller: threshold too high");
        rebalanceThreshold = _threshold;
    }
    
    function setVault(address _vault) external onlyOwner {
        require(_vault != address(0), "Controller: invalid vault");
        vault = _vault;
    }
    
    function setAPYOracle(address _oracle) external onlyOwner {
        apyOracle = _oracle;
        emit APYOracleUpdated(_oracle);
    }
    
    function setEmergencyReceiver(address _receiver) external onlyOwner {
        require(_receiver != address(0), "Controller: invalid receiver");
        emergencyReceiver = _receiver;
    }
    
    // ============ Emergency & Operational Functions ============
    
    function emergencyWithdraw(string memory strategyName) external override onlyOwner nonReentrant {
        require(strategyExists[strategyName], "Controller: strategy not found");
        require(emergencyReceiver != address(0), "Controller: emergency receiver not set");
        
        IStrategyAdapter strategy = IStrategyAdapter(strategies[strategyName]);
        uint256 balance = strategy.balanceOf(address(this));
        
        if (balance > 0) {
            strategy.withdraw(balance);
            // Emergency withdrawal sends everything to the designated Safe address
            uint256 withdrawnAmount = token.balanceOf(address(this));
            if (withdrawnAmount > 0) {
                token.safeTransfer(emergencyReceiver, withdrawnAmount);
            }
        }
    }
    
    function withdrawFromStrategy(string memory strategyName, uint256 amount) external nonReentrant {
        require(msg.sender == vault, "Controller: only vault");
        
        // Special case: empty string means withdraw idle funds from controller
        if (bytes(strategyName).length == 0) {
            uint256 balance = token.balanceOf(address(this));
            uint256 toTransfer = balance >= amount ? amount : balance;
            if (toTransfer > 0) {
                token.safeTransfer(vault, toTransfer);
            }
            return;
        }
        
        require(strategyExists[strategyName], "Controller: strategy not found");
        
        IStrategyAdapter strategy = IStrategyAdapter(strategies[strategyName]);
        uint256 strategyBalance = strategy.balanceOf(address(this));
        
        // Allow for 1 wei rounding error
        require(strategyBalance + 1 >= amount, "Controller: insufficient balance");
        
        // If we're off by just 1 wei due to rounding, withdraw what's available
        uint256 toWithdraw = strategyBalance < amount ? strategyBalance : amount;
        
        uint256 withdrawn = strategy.withdraw(toWithdraw);
        token.safeTransfer(vault, withdrawn);
    }
    
    /**
     * @notice Deploy funds to a specific strategy (owner or keeper)
     * @param strategyName The name of the strategy to deploy to
     * @param amount The amount of tokens to deploy
     */
    function deployToStrategy(string memory strategyName, uint256 amount) external onlyOwnerOrKeeper {
        require(strategyExists[strategyName], "Controller: strategy not found");
        require(token.balanceOf(address(this)) >= amount, "Controller: insufficient balance");
        
        address strategy = strategies[strategyName];
        SafeERC20.forceApprove(token, strategy, amount);
        IStrategyAdapter(strategy).deposit(amount);
        SafeERC20.forceApprove(token, strategy, 0); // Clear residual allowance
    }
    
    // ============ View Functions ============
    
    /**
     * @notice Get the total number of keepers
     * @return The number of keeper addresses
     */
    function getKeeperCount() external view returns (uint256) {
        return keeperCount;
    }
    
    /**
     * @notice Check if the controller is paused
     * @return Whether the controller is paused
     */
    function isPaused() external view returns (bool) {
        return paused;
    }
    
    /**
     * @notice Get the current rebalance threshold
     * @return The threshold in basis points
     */
    function getRebalanceThreshold() external view returns (uint256) {
        return rebalanceThreshold;
    }
}"
    },
    "src/interfaces/IController.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

interface IController {
    function rebalance() external;
    
    function addStrategy(string memory name, address adapter) external;
    
    function removeStrategy(string memory name) external;
    
    function getStrategy(string memory name) external view returns (address);
    
    function getAllStrategies() external view returns (string[] memory names, address[] memory adapters);
    
    function pause() external;
    
    function unpause() external;
    
    function emergencyWithdraw(string memory strategyName) external;
    
    function withdrawFromStrategy(string memory strategyName, uint256 amount) external;
    
    function deployToStrategy(string memory strategyName, uint256 amount) external;
}"
    },
    "src/interfaces/IStrategyAdapter.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

interface IStrategyAdapter {
    function deposit(uint256 amount) external returns (uint256 shares);
    
    function withdraw(uint256 amount) external returns (uint256 withdrawn);
    
    function balanceOf(address account) external view returns (uint256);
    
    function getCurrentAPY() external view returns (uint256);
    
    // APY tracking functions
    function updateMetrics() external;
    
    function getLastUpdateTime() external view returns (uint256);
    
    function isAPYStale() external view returns (bool);
}"
    },
    "src/interfaces/IRegistry.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

interface IRegistry {
    event StrategyAdded(string indexed name, address indexed adapter);
    event StrategyRemoved(string indexed name, address indexed adapter);
    
    function registerStrategy(string memory name, address adapter) external;
    
    function unregisterStrategy(string memory name) external;
    
    function getStrategyAddress(string memory name) external view returns (address);
    
    function isRegisteredStrategy(string memory name) external view returns (bool);
    
    function getAllStrategies() external view returns (string[] memory names, address[] memory adapters);
    
    function strategyCount() external view returns (uint256);
}"
    },
    "src/interfaces/IAPYOracle.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

/**
 * @title IAPYOracle
 * @notice Interface for the APY Oracle contract that provides APY data for all adapters
 * @dev Supports both direct protocol queries and historical price-based calculations
 */
interface IAPYOracle {
    // Events
    event APYOracleInitialized(address indexed oracle);
    event PriceUpdated(address indexed protocol, uint256 price, uint256 timestamp);
    event ManualAPYSet(address indexed adapter, uint256 apy);
    event ManualAPYToggled(address indexed adapter, bool useManual);
    event HistoricalDataLoaded(address indexed protocol, uint256[7] prices);
    event ProtocolInitialized(address indexed protocol);

    // Errors
    error InvalidAddress();
    error NotInitialized();
    error AlreadyInitialized();
    error UpdateTooSoon();
    error InvalidPrice();
    error InvalidAPY();
    error InvalidProtocol();

    /**
     * @notice Get the current APY for a given adapter
     * @param adapter The adapter address to get APY for
     * @return apy The current APY in basis points (100 = 1%)
     */
    function getAPY(address adapter) external view returns (uint256 apy);

    /**
     * @notice Get Aave protocol APY directly from the pool
     * @return apy The current Aave supply APY in basis points
     */
    function getAaveAPY() external view returns (uint256 apy);

    /**
     * @notice Get Compound protocol APY directly from the comet
     * @return apy The current Compound supply APY in basis points
     */
    function getCompoundAPY() external view returns (uint256 apy);

    /**
     * @notice Calculate APY from historical price data
     * @param protocol The protocol address to calculate APY for
     * @return apy The calculated APY based on 7-day price history
     */
    function getHistoricalAPY(address protocol) external view returns (uint256 apy);

    /**
     * @notice Update price for a protocol (keeper function)
     * @param protocol The protocol address to update price for
     */
    function updateProtocolPrice(address protocol) external;

    /**
     * @notice Manually update price for testing
     * @param protocol The protocol address
     * @param price The new price to set
     */
    function updatePriceManual(address protocol, uint256 price) external;

    /**
     * @notice Load historical prices for initialization
     * @param protocol The protocol address
     * @param prices Array of 7 historical prices (oldest to newest)
     */
    function loadHistoricalPrices(address protocol, uint256[7] memory prices) external;

    /**
     * @notice Set manual APY override for testing
     * @param adapter The adapter address
     * @param apy The manual APY to set
     */
    function setManualAPY(address adapter, uint256 apy) external;

    /**
     * @notice Toggle manual APY override
     * @param adapter The adapter address
     * @param useManual Whether to use manual APY
     */
    function setUseManualAPY(address adapter, bool useManual) external;

    /**
     * @notice Check if a protocol is initialized with price history
     * @param protocol The protocol address to check
     * @return initialized Whether the protocol has been initialized
     */
    function isInitialized(address protocol) external view returns (bool initialized);

    /**
     * @notice Get the last update timestamp for a protocol
     * @param protocol The protocol address
     * @return timestamp The last update timestamp
     */
    function getLastUpdateTime(address protocol) external view returns (uint256 timestamp);

    /**
     * @notice Get the current price history for a protocol
     * @param protocol The protocol address
     * @return prices The 7-day price history array
     */
    function getPriceHistory(address protocol) external view returns (uint256[7] memory prices);

    /**
     * @notice Update prices for all protocols (keeper batch function)
     */
    function updateDailyPrices() external;
}"
    },
    "lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/IERC20.sol)

pragma solidity >=0.4.16;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
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 value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` 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 value) external returns (bool);
}
"
    },
    "lib/forge-std/src/interfaces/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2;

/// @dev Interface of the ERC20 standard as defined in the EIP.
/// @dev This includes the optional name, symbol, and decimals metadata.
interface IERC20 {
    /// @dev Emitted when `value` tokens are moved from one account (`from`) to another (`to`).
    event Transfer(address indexed from, address indexed to, uint256 value);

    /// @dev Emitted when the allowance of a `spender` for an `owner` is set, where `value`
    /// is the new allowance.
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /// @notice Returns the amount of tokens in existence.
    function totalSupply() external view returns (uint256);

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

    /// @notice Moves `amount` tokens from the caller's account to `to`.
    function transfer(address to, uint256 amount) external returns (bool);

    /// @notice Returns the remaining number of tokens that `spender` is allowed
    /// to spend on behalf of `owner`
    function allowance(address owner, address spender) external view returns (uint256);

    /// @notice Sets `amount` as the allowance of `spender` over the caller's tokens.
    /// @dev Be aware of front-running risks: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
    function approve(address spender, uint256 amount) external returns (bool);

    /// @notice Moves `amount` tokens from `from` to `to` using the allowance mechanism.
    /// `amount` is then deducted from the caller's allowance.
    function transferFrom(address from, address to, uint256 amount) external returns (bool);

    /// @notice Returns the name of the token.
    function name() external view returns (string memory);

    /// @notice Returns the symbol of the token.
    function symbol() external view returns (string memory);

    /// @notice Returns the decimals places of the token.
    function decimals() external view returns (uint8);
}
"
    },
    "lib/openzeppelin-contracts/contracts/utils/ReentrancyGuard.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/ReentrancyGuard.sol)

pragma solidity ^0.8.20;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If EIP-1153 (transient storage) is available on the chain you're deploying at,
 * consider using {ReentrancyGuardTransient} instead.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant NOT_ENTERED = 1;
    uint256 private constant ENTERED = 2;

    uint256 private _status;

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    constructor() {
        _status = NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be NOT_ENTERED
        if (_status == ENTERED) {
            revert ReentrancyGuardReentrantCall();
        }

        // Any calls to nonReentrant after this point will fail
        _status = ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == ENTERED;
    }
}
"
    },
    "lib/openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC1363} from "../../../interfaces/IERC1363.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC-20 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 {
    /**
     * @dev An operation with an ERC-20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Variant of {safeTransfer} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransfer(IERC20 token, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Variant of {safeTransferFrom} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransferFrom(IERC20 token, address from, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     *
     * NOTE: If the token implements ERC-7674, this function will not modify any temporary allowance. This function
     * only sets the "standard" allowance. Any temporary allowance will remain active, in addition to the value being
     * set here.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Performs an {ERC1363} transferAndCall, with a fallback to the simple {ERC20} transfer if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            safeTransfer(token, to, value);
        } else if (!token.transferAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} transferFromAndCall, with a fallback to the simple {ERC20} transferFrom if the target
     * has no code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferFromAndCallRelaxed(
        IERC1363 token,
        address from,
        address to,
        uint256 value,
        bytes memory data
    ) internal {
        if (to.code.length == 0) {
            safeTransferFrom(token, from, to, value);
        } else if (!token.transferFromAndCall(from, to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} approveAndCall, with a fallback to the simple {ERC20} approve if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * NOTE: When the recipient address (`to`) has no code (i.e. is an EOA), this function behaves as {forceApprove}.
     * Opposedly, when the recipient address (`to`) has code, this function only attempts to call {ERC1363-approveAndCall}
     * once without retrying, and relies on the returned value to be true.
     *
     * Reverts if the returned value is other than `true`.
     */
    function approveAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            forceApprove(token, to, value);
        } else if (!token.approveAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @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).
     *
     * This is a variant of {_callOptionalReturnBool} that reverts if call fails to meet the requirements.
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            let success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            // bubble errors
            if iszero(success) {
                let ptr := mload(0x40)
                returndatacopy(ptr, 0, returndatasize())
                revert(ptr, returndatasize())
            }
            returnSize := returndatasize()
            returnValue := mload(0)
        }

        if (returnSize == 0 ? address(token).code.length == 0 : returnValue != 1) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @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).
     *
     * This is a variant of {_callOptionalReturn} that silently catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        bool success;
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            returnSize := returndatasize()
            returnValue := mload(0)
        }
        return success && (returnSize == 0 ? address(token).code.length > 0 : returnValue == 1);
    }
}
"
    },
    "lib/openzeppelin-contracts/contracts/interfaces/IERC1363.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC1363.sol)

pragma solidity >=0.6.2;

import {IERC20} from "./IERC20.sol";
import {IERC165} from "./IERC165.sol";

/**
 * @title IERC1363
 * @dev Interface of the ERC-1363 standard as defined in the https://eips.ethereum.org/EIPS/eip-1363[ERC-1363].
 *
 * Defines an extension interface for ERC-20 tokens that supports executing code on a recipient contract
 * after `transfer` or `transferFrom`, or code on a spender contract after `approve`, in a single transaction.
 */
interface IERC1363 is IERC20, IERC165 {
    /*
     * Note: the ERC-165 identifier for this interface is 0xb0202a11.
     * 0xb0202a11 ===
     *   bytes4(keccak256('transferAndCall(address,uint256)')) ^
     *   bytes4(keccak256('transferAndCall(address,uint256,bytes)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256,bytes)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256,bytes)'))
     */

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @param data Additional data with no specified format, sent in call to `spender`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
}
"
    },
    "lib/openzeppelin-contracts/contracts/interfaces/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC20.sol)

pragma solidity >=0.4.16;

import {IERC20} from "../token/ERC20/IERC20.sol";
"
    },
    "lib/openzeppelin-contracts/contracts/interfaces/IERC165.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC165.sol)

pragma solidity >=0.4.16;

import {IERC165} from "../utils/introspection/IERC165.sol";
"
    },
    "lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (utils/introspection/IERC165.sol)

pragma solidity >=0.4.16;

/**
 * @dev Interface of the ERC-165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[ERC].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[ERC section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
"
    }
  },
  "settings": {
    "remappings": [
      "forge-std/=lib/forge-std/src/",
      "@openzeppelin/=lib/openzeppelin-contracts/",
      "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
      "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
      "halmos-cheatcodes/=lib/openzeppelin-contracts/lib/halmos-cheatcodes/src/",
      "openzeppelin-contracts/=lib/openzeppelin-contracts/"
    ],
    "optimizer": {
      "enabled": true,
      "runs": 200
    },
    "metadata": {
      "useLiteralContent": false,
      "bytecodeHash": "ipfs",
      "appendCBOR": true
    },
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    },
    "evmVersion": "cancun",
    "viaIR": true
  }
}}