Contract Source Code:

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (interfaces/draft-IERC1822.sol)

pragma solidity ^0.8.0;

/**
 * @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
 * proxy whose upgrades are fully controlled by the current implementation.
 */
interface IERC1822Proxiable {
    /**
     * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
     * address.
     *
     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
     * function revert if invoked through a proxy.
     */
    function proxiableUUID() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC1271.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC1271 standard signature validation method for
 * contracts as defined in https://eips.ethereum.org/EIPS/eip-1271[ERC-1271].
 *
 * _Available since v4.1._
 */
interface IERC1271 {
    /**
     * @dev Should return whether the signature provided is valid for the provided data
     * @param hash      Hash of the data to be signed
     * @param signature Signature byte array associated with _data
     */
    function isValidSignature(bytes32 hash, bytes memory signature) external view returns (bytes4 magicValue);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC1967.sol)

pragma solidity ^0.8.0;

/**
 * @dev ERC-1967: Proxy Storage Slots. This interface contains the events defined in the ERC.
 *
 * _Available since v4.8.3._
 */
interface IERC1967 {
    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @dev Emitted when the beacon is changed.
     */
    event BeaconUpgraded(address indexed beacon);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC5267.sol)

pragma solidity ^0.8.0;

interface IERC5267 {
    /**
     * @dev MAY be emitted to signal that the domain could have changed.
     */
    event EIP712DomainChanged();

    /**
     * @dev returns the fields and values that describe the domain separator used by this contract for EIP-712
     * signature.
     */
    function eip712Domain()
        external
        view
        returns (
            bytes1 fields,
            string memory name,
            string memory version,
            uint256 chainId,
            address verifyingContract,
            bytes32 salt,
            uint256[] memory extensions
        );
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol)

pragma solidity ^0.8.0;

/**
 * @dev This is the interface that {BeaconProxy} expects of its beacon.
 */
interface IBeacon {
    /**
     * @dev Must return an address that can be used as a delegate call target.
     *
     * {BeaconProxy} will check that this address is a contract.
     */
    function implementation() external view returns (address);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/ERC1967/ERC1967Upgrade.sol)

pragma solidity ^0.8.2;

import "../beacon/IBeacon.sol";
import "../../interfaces/IERC1967.sol";
import "../../interfaces/draft-IERC1822.sol";
import "../../utils/Address.sol";
import "../../utils/StorageSlot.sol";

/**
 * @dev This abstract contract provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
 *
 * _Available since v4.1._
 */
abstract contract ERC1967Upgrade is IERC1967 {
    // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
    bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;

    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Returns the current implementation address.
     */
    function _getImplementation() internal view returns (address) {
        return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
        StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
    }

    /**
     * @dev Perform implementation upgrade
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Perform implementation upgrade with additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCall(address newImplementation, bytes memory data, bool forceCall) internal {
        _upgradeTo(newImplementation);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(newImplementation, data);
        }
    }

    /**
     * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCallUUPS(address newImplementation, bytes memory data, bool forceCall) internal {
        // Upgrades from old implementations will perform a rollback test. This test requires the new
        // implementation to upgrade back to the old, non-ERC1822 compliant, implementation. Removing
        // this special case will break upgrade paths from old UUPS implementation to new ones.
        if (StorageSlot.getBooleanSlot(_ROLLBACK_SLOT).value) {
            _setImplementation(newImplementation);
        } else {
            try IERC1822Proxiable(newImplementation).proxiableUUID() returns (bytes32 slot) {
                require(slot == _IMPLEMENTATION_SLOT, "ERC1967Upgrade: unsupported proxiableUUID");
            } catch {
                revert("ERC1967Upgrade: new implementation is not UUPS");
            }
            _upgradeToAndCall(newImplementation, data, forceCall);
        }
    }

    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /**
     * @dev Returns the current admin.
     */
    function _getAdmin() internal view returns (address) {
        return StorageSlot.getAddressSlot(_ADMIN_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        require(newAdmin != address(0), "ERC1967: new admin is the zero address");
        StorageSlot.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     */
    function _changeAdmin(address newAdmin) internal {
        emit AdminChanged(_getAdmin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
     * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
     */
    bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;

    /**
     * @dev Returns the current beacon.
     */
    function _getBeacon() internal view returns (address) {
        return StorageSlot.getAddressSlot(_BEACON_SLOT).value;
    }

    /**
     * @dev Stores a new beacon in the EIP1967 beacon slot.
     */
    function _setBeacon(address newBeacon) private {
        require(Address.isContract(newBeacon), "ERC1967: new beacon is not a contract");
        require(
            Address.isContract(IBeacon(newBeacon).implementation()),
            "ERC1967: beacon implementation is not a contract"
        );
        StorageSlot.getAddressSlot(_BEACON_SLOT).value = newBeacon;
    }

    /**
     * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
     * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
     *
     * Emits a {BeaconUpgraded} event.
     */
    function _upgradeBeaconToAndCall(address newBeacon, bytes memory data, bool forceCall) internal {
        _setBeacon(newBeacon);
        emit BeaconUpgraded(newBeacon);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/UUPSUpgradeable.sol)

pragma solidity ^0.8.0;

import "../../interfaces/draft-IERC1822.sol";
import "../ERC1967/ERC1967Upgrade.sol";

/**
 * @dev An upgradeability mechanism designed for UUPS proxies. The functions included here can perform an upgrade of an
 * {ERC1967Proxy}, when this contract is set as the implementation behind such a proxy.
 *
 * A security mechanism ensures that an upgrade does not turn off upgradeability accidentally, although this risk is
 * reinstated if the upgrade retains upgradeability but removes the security mechanism, e.g. by replacing
 * `UUPSUpgradeable` with a custom implementation of upgrades.
 *
 * The {_authorizeUpgrade} function must be overridden to include access restriction to the upgrade mechanism.
 *
 * _Available since v4.1._
 */
abstract contract UUPSUpgradeable is IERC1822Proxiable, ERC1967Upgrade {
    /// @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment
    address private immutable __self = address(this);

    /**
     * @dev Check that the execution is being performed through a delegatecall call and that the execution context is
     * a proxy contract with an implementation (as defined in ERC1967) pointing to self. This should only be the case
     * for UUPS and transparent proxies that are using the current contract as their implementation. Execution of a
     * function through ERC1167 minimal proxies (clones) would not normally pass this test, but is not guaranteed to
     * fail.
     */
    modifier onlyProxy() {
        require(address(this) != __self, "Function must be called through delegatecall");
        require(_getImplementation() == __self, "Function must be called through active proxy");
        _;
    }

    /**
     * @dev Check that the execution is not being performed through a delegate call. This allows a function to be
     * callable on the implementing contract but not through proxies.
     */
    modifier notDelegated() {
        require(address(this) == __self, "UUPSUpgradeable: must not be called through delegatecall");
        _;
    }

    /**
     * @dev Implementation of the ERC1822 {proxiableUUID} function. This returns the storage slot used by the
     * implementation. It is used to validate the implementation's compatibility when performing an upgrade.
     *
     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
     * function revert if invoked through a proxy. This is guaranteed by the `notDelegated` modifier.
     */
    function proxiableUUID() external view virtual override notDelegated returns (bytes32) {
        return _IMPLEMENTATION_SLOT;
    }

    /**
     * @dev Upgrade the implementation of the proxy to `newImplementation`.
     *
     * Calls {_authorizeUpgrade}.
     *
     * Emits an {Upgraded} event.
     *
     * @custom:oz-upgrades-unsafe-allow-reachable delegatecall
     */
    function upgradeTo(address newImplementation) public virtual onlyProxy {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallUUPS(newImplementation, new bytes(0), false);
    }

    /**
     * @dev Upgrade the implementation of the proxy to `newImplementation`, and subsequently execute the function call
     * encoded in `data`.
     *
     * Calls {_authorizeUpgrade}.
     *
     * Emits an {Upgraded} event.
     *
     * @custom:oz-upgrades-unsafe-allow-reachable delegatecall
     */
    function upgradeToAndCall(address newImplementation, bytes memory data) public payable virtual onlyProxy {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallUUPS(newImplementation, data, true);
    }

    /**
     * @dev Function that should revert when `msg.sender` is not authorized to upgrade the contract. Called by
     * {upgradeTo} and {upgradeToAndCall}.
     *
     * Normally, this function will use an xref:access.adoc[access control] modifier such as {Ownable-onlyOwner}.
     *
     * ```solidity
     * function _authorizeUpgrade(address) internal override onlyOwner {}
     * ```
     */
    function _authorizeUpgrade(address newImplementation) internal virtual;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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 v4.9.0) (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
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [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://consensys.net/diligence/blog/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/v0.8.0/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 functionCallWithValue(target, data, 0, "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");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or 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 {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // 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 v4.4.1 (utils/Counters.sol)

pragma solidity ^0.8.0;

/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 */
library Counters {
    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }

    function increment(Counter storage counter) internal {
        unchecked {
            counter._value += 1;
        }
    }

    function decrement(Counter storage counter) internal {
        uint256 value = counter._value;
        require(value > 0, "Counter: decrement overflow");
        unchecked {
            counter._value = value - 1;
        }
    }

    function reset(Counter storage counter) internal {
        counter._value = 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/cryptography/ECDSA.sol)

pragma solidity ^0.8.0;

import "../Strings.sol";

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV // Deprecated in v4.8
    }

    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            /// @solidity memory-safe-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address, RecoverError) {
        bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
        uint8 v = uint8((uint256(vs) >> 255) + 27);
        return tryRecover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     *
     * _Available since v4.2._
     */
    function recover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address, RecoverError) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature);
        }

        return (signer, RecoverError.NoError);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32 message) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, "\x19Ethereum Signed Message:\n32")
            mstore(0x1c, hash)
            message := keccak256(0x00, 0x3c)
        }
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from `s`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32 data) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, "\x19\x01")
            mstore(add(ptr, 0x02), domainSeparator)
            mstore(add(ptr, 0x22), structHash)
            data := keccak256(ptr, 0x42)
        }
    }

    /**
     * @dev Returns an Ethereum Signed Data with intended validator, created from a
     * `validator` and `data` according to the version 0 of EIP-191.
     *
     * See {recover}.
     */
    function toDataWithIntendedValidatorHash(address validator, bytes memory data) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x00", validator, data));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/cryptography/EIP712.sol)

pragma solidity ^0.8.8;

import "./ECDSA.sol";
import "../ShortStrings.sol";
import "../../interfaces/IERC5267.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * NOTE: In the upgradeable version of this contract, the cached values will correspond to the address, and the domain
 * separator of the implementation contract. This will cause the `_domainSeparatorV4` function to always rebuild the
 * separator from the immutable values, which is cheaper than accessing a cached version in cold storage.
 *
 * _Available since v3.4._
 *
 * @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment
 */
abstract contract EIP712 is IERC5267 {
    using ShortStrings for *;

    bytes32 private constant _TYPE_HASH =
        keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)");

    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
    // invalidate the cached domain separator if the chain id changes.
    bytes32 private immutable _cachedDomainSeparator;
    uint256 private immutable _cachedChainId;
    address private immutable _cachedThis;

    bytes32 private immutable _hashedName;
    bytes32 private immutable _hashedVersion;

    ShortString private immutable _name;
    ShortString private immutable _version;
    string private _nameFallback;
    string private _versionFallback;

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    constructor(string memory name, string memory version) {
        _name = name.toShortStringWithFallback(_nameFallback);
        _version = version.toShortStringWithFallback(_versionFallback);
        _hashedName = keccak256(bytes(name));
        _hashedVersion = keccak256(bytes(version));

        _cachedChainId = block.chainid;
        _cachedDomainSeparator = _buildDomainSeparator();
        _cachedThis = address(this);
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        if (address(this) == _cachedThis && block.chainid == _cachedChainId) {
            return _cachedDomainSeparator;
        } else {
            return _buildDomainSeparator();
        }
    }

    function _buildDomainSeparator() private view returns (bytes32) {
        return keccak256(abi.encode(_TYPE_HASH, _hashedName, _hashedVersion, block.chainid, address(this)));
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
    }

    /**
     * @dev See {EIP-5267}.
     *
     * _Available since v4.9._
     */
    function eip712Domain()
        public
        view
        virtual
        override
        returns (
            bytes1 fields,
            string memory name,
            string memory version,
            uint256 chainId,
            address verifyingContract,
            bytes32 salt,
            uint256[] memory extensions
        )
    {
        return (
            hex"0f", // 01111
            _name.toStringWithFallback(_nameFallback),
            _version.toStringWithFallback(_versionFallback),
            block.chainid,
            address(this),
            bytes32(0),
            new uint256[](0)
        );
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/cryptography/SignatureChecker.sol)

pragma solidity ^0.8.0;

import "./ECDSA.sol";
import "../../interfaces/IERC1271.sol";

/**
 * @dev Signature verification helper that can be used instead of `ECDSA.recover` to seamlessly support both ECDSA
 * signatures from externally owned accounts (EOAs) as well as ERC1271 signatures from smart contract wallets like
 * Argent and Gnosis Safe.
 *
 * _Available since v4.1._
 */
library SignatureChecker {
    /**
     * @dev Checks if a signature is valid for a given signer and data hash. If the signer is a smart contract, the
     * signature is validated against that smart contract using ERC1271, otherwise it's validated using `ECDSA.recover`.
     *
     * NOTE: Unlike ECDSA signatures, contract signatures are revocable, and the outcome of this function can thus
     * change through time. It could return true at block N and false at block N+1 (or the opposite).
     */
    function isValidSignatureNow(address signer, bytes32 hash, bytes memory signature) internal view returns (bool) {
        (address recovered, ECDSA.RecoverError error) = ECDSA.tryRecover(hash, signature);
        return
            (error == ECDSA.RecoverError.NoError && recovered == signer) ||
            isValidERC1271SignatureNow(signer, hash, signature);
    }

    /**
     * @dev Checks if a signature is valid for a given signer and data hash. The signature is validated
     * against the signer smart contract using ERC1271.
     *
     * NOTE: Unlike ECDSA signatures, contract signatures are revocable, and the outcome of this function can thus
     * change through time. It could return true at block N and false at block N+1 (or the opposite).
     */
    function isValidERC1271SignatureNow(
        address signer,
        bytes32 hash,
        bytes memory signature
    ) internal view returns (bool) {
        (bool success, bytes memory result) = signer.staticcall(
            abi.encodeWithSelector(IERC1271.isValidSignature.selector, hash, signature)
        );
        return (success &&
            result.length >= 32 &&
            abi.decode(result, (bytes32)) == bytes32(IERC1271.isValidSignature.selector));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1, "Math: mulDiv overflow");

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SafeCast.sol)
// This file was procedurally generated from scripts/generate/templates/SafeCast.js.

pragma solidity ^0.8.0;

/**
 * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow
 * checks.
 *
 * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
 * easily result in undesired exploitation or bugs, since developers usually
 * assume that overflows raise errors. `SafeCast` restores this intuition by
 * reverting the transaction when such an operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 *
 * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing
 * all math on `uint256` and `int256` and then downcasting.
 */
library SafeCast {
    /**
     * @dev Returns the downcasted uint248 from uint256, reverting on
     * overflow (when the input is greater than largest uint248).
     *
     * Counterpart to Solidity's `uint248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     *
     * _Available since v4.7._
     */
    function toUint248(uint256 value) internal pure returns (uint248) {
        require(value <= type(uint248).max, "SafeCast: value doesn't fit in 248 bits");
        return uint248(value);
    }

    /**
     * @dev Returns the downcasted uint240 from uint256, reverting on
     * overflow (when the input is greater than largest uint240).
     *
     * Counterpart to Solidity's `uint240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     *
     * _Available since v4.7._
     */
    function toUint240(uint256 value) internal pure returns (uint240) {
        require(value <= type(uint240).max, "SafeCast: value doesn't fit in 240 bits");
        return uint240(value);
    }

    /**
     * @dev Returns the downcasted uint232 from uint256, reverting on
     * overflow (when the input is greater than largest uint232).
     *
     * Counterpart to Solidity's `uint232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     *
     * _Available since v4.7._
     */
    function toUint232(uint256 value) internal pure returns (uint232) {
        require(value <= type(uint232).max, "SafeCast: value doesn't fit in 232 bits");
        return uint232(value);
    }

    /**
     * @dev Returns the downcasted uint224 from uint256, reverting on
     * overflow (when the input is greater than largest uint224).
     *
     * Counterpart to Solidity's `uint224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     *
     * _Available since v4.2._
     */
    function toUint224(uint256 value) internal pure returns (uint224) {
        require(value <= type(uint224).max, "SafeCast: value doesn't fit in 224 bits");
        return uint224(value);
    }

    /**
     * @dev Returns the downcasted uint216 from uint256, reverting on
     * overflow (when the input is greater than largest uint216).
     *
     * Counterpart to Solidity's `uint216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     *
     * _Available since v4.7._
     */
    function toUint216(uint256 value) internal pure returns (uint216) {
        require(value <= type(uint216).max, "SafeCast: value doesn't fit in 216 bits");
        return uint216(value);
    }

    /**
     * @dev Returns the downcasted uint208 from uint256, reverting on
     * overflow (when the input is greater than largest uint208).
     *
     * Counterpart to Solidity's `uint208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     *
     * _Available since v4.7._
     */
    function toUint208(uint256 value) internal pure returns (uint208) {
        require(value <= type(uint208).max, "SafeCast: value doesn't fit in 208 bits");
        return uint208(value);
    }

    /**
     * @dev Returns the downcasted uint200 from uint256, reverting on
     * overflow (when the input is greater than largest uint200).
     *
     * Counterpart to Solidity's `uint200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     *
     * _Available since v4.7._
     */
    function toUint200(uint256 value) internal pure returns (uint200) {
        require(value <= type(uint200).max, "SafeCast: value doesn't fit in 200 bits");
        return uint200(value);
    }

    /**
     * @dev Returns the downcasted uint192 from uint256, reverting on
     * overflow (when the input is greater than largest uint192).
     *
     * Counterpart to Solidity's `uint192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     *
     * _Available since v4.7._
     */
    function toUint192(uint256 value) internal pure returns (uint192) {
        require(value <= type(uint192).max, "SafeCast: value doesn't fit in 192 bits");
        return uint192(value);
    }

    /**
     * @dev Returns the downcasted uint184 from uint256, reverting on
     * overflow (when the input is greater than largest uint184).
     *
     * Counterpart to Solidity's `uint184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     *
     * _Available since v4.7._
     */
    function toUint184(uint256 value) internal pure returns (uint184) {
        require(value <= type(uint184).max, "SafeCast: value doesn't fit in 184 bits");
        return uint184(value);
    }

    /**
     * @dev Returns the downcasted uint176 from uint256, reverting on
     * overflow (when the input is greater than largest uint176).
     *
     * Counterpart to Solidity's `uint176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     *
     * _Available since v4.7._
     */
    function toUint176(uint256 value) internal pure returns (uint176) {
        require(value <= type(uint176).max, "SafeCast: value doesn't fit in 176 bits");
        return uint176(value);
    }

    /**
     * @dev Returns the downcasted uint168 from uint256, reverting on
     * overflow (when the input is greater than largest uint168).
     *
     * Counterpart to Solidity's `uint168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     *
     * _Available since v4.7._
     */
    function toUint168(uint256 value) internal pure returns (uint168) {
        require(value <= type(uint168).max, "SafeCast: value doesn't fit in 168 bits");
        return uint168(value);
    }

    /**
     * @dev Returns the downcasted uint160 from uint256, reverting on
     * overflow (when the input is greater than largest uint160).
     *
     * Counterpart to Solidity's `uint160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     *
     * _Available since v4.7._
     */
    function toUint160(uint256 value) internal pure returns (uint160) {
        require(value <= type(uint160).max, "SafeCast: value doesn't fit in 160 bits");
        return uint160(value);
    }

    /**
     * @dev Returns the downcasted uint152 from uint256, reverting on
     * overflow (when the input is greater than largest uint152).
     *
     * Counterpart to Solidity's `uint152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     *
     * _Available since v4.7._
     */
    function toUint152(uint256 value) internal pure returns (uint152) {
        require(value <= type(uint152).max, "SafeCast: value doesn't fit in 152 bits");
        return uint152(value);
    }

    /**
     * @dev Returns the downcasted uint144 from uint256, reverting on
     * overflow (when the input is greater than largest uint144).
     *
     * Counterpart to Solidity's `uint144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     *
     * _Available since v4.7._
     */
    function toUint144(uint256 value) internal pure returns (uint144) {
        require(value <= type(uint144).max, "SafeCast: value doesn't fit in 144 bits");
        return uint144(value);
    }

    /**
     * @dev Returns the downcasted uint136 from uint256, reverting on
     * overflow (when the input is greater than largest uint136).
     *
     * Counterpart to Solidity's `uint136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     *
     * _Available since v4.7._
     */
    function toUint136(uint256 value) internal pure returns (uint136) {
        require(value <= type(uint136).max, "SafeCast: value doesn't fit in 136 bits");
        return uint136(value);
    }

    /**
     * @dev Returns the downcasted uint128 from uint256, reverting on
     * overflow (when the input is greater than largest uint128).
     *
     * Counterpart to Solidity's `uint128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     *
     * _Available since v2.5._
     */
    function toUint128(uint256 value) internal pure returns (uint128) {
        require(value <= type(uint128).max, "SafeCast: value doesn't fit in 128 bits");
        return uint128(value);
    }

    /**
     * @dev Returns the downcasted uint120 from uint256, reverting on
     * overflow (when the input is greater than largest uint120).
     *
     * Counterpart to Solidity's `uint120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     *
     * _Available since v4.7._
     */
    function toUint120(uint256 value) internal pure returns (uint120) {
        require(value <= type(uint120).max, "SafeCast: value doesn't fit in 120 bits");
        return uint120(value);
    }

    /**
     * @dev Returns the downcasted uint112 from uint256, reverting on
     * overflow (when the input is greater than largest uint112).
     *
     * Counterpart to Solidity's `uint112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     *
     * _Available since v4.7._
     */
    function toUint112(uint256 value) internal pure returns (uint112) {
        require(value <= type(uint112).max, "SafeCast: value doesn't fit in 112 bits");
        return uint112(value);
    }

    /**
     * @dev Returns the downcasted uint104 from uint256, reverting on
     * overflow (when the input is greater than largest uint104).
     *
     * Counterpart to Solidity's `uint104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     *
     * _Available since v4.7._
     */
    function toUint104(uint256 value) internal pure returns (uint104) {
        require(value <= type(uint104).max, "SafeCast: value doesn't fit in 104 bits");
        return uint104(value);
    }

    /**
     * @dev Returns the downcasted uint96 from uint256, reverting on
     * overflow (when the input is greater than largest uint96).
     *
     * Counterpart to Solidity's `uint96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     *
     * _Available since v4.2._
     */
    function toUint96(uint256 value) internal pure returns (uint96) {
        require(value <= type(uint96).max, "SafeCast: value doesn't fit in 96 bits");
        return uint96(value);
    }

    /**
     * @dev Returns the downcasted uint88 from uint256, reverting on
     * overflow (when the input is greater than largest uint88).
     *
     * Counterpart to Solidity's `uint88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     *
     * _Available since v4.7._
     */
    function toUint88(uint256 value) internal pure returns (uint88) {
        require(value <= type(uint88).max, "SafeCast: value doesn't fit in 88 bits");
        return uint88(value);
    }

    /**
     * @dev Returns the downcasted uint80 from uint256, reverting on
     * overflow (when the input is greater than largest uint80).
     *
     * Counterpart to Solidity's `uint80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     *
     * _Available since v4.7._
     */
    function toUint80(uint256 value) internal pure returns (uint80) {
        require(value <= type(uint80).max, "SafeCast: value doesn't fit in 80 bits");
        return uint80(value);
    }

    /**
     * @dev Returns the downcasted uint72 from uint256, reverting on
     * overflow (when the input is greater than largest uint72).
     *
     * Counterpart to Solidity's `uint72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     *
     * _Available since v4.7._
     */
    function toUint72(uint256 value) internal pure returns (uint72) {
        require(value <= type(uint72).max, "SafeCast: value doesn't fit in 72 bits");
        return uint72(value);
    }

    /**
     * @dev Returns the downcasted uint64 from uint256, reverting on
     * overflow (when the input is greater than largest uint64).
     *
     * Counterpart to Solidity's `uint64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     *
     * _Available since v2.5._
     */
    function toUint64(uint256 value) internal pure returns (uint64) {
        require(value <= type(uint64).max, "SafeCast: value doesn't fit in 64 bits");
        return uint64(value);
    }

    /**
     * @dev Returns the downcasted uint56 from uint256, reverting on
     * overflow (when the input is greater than largest uint56).
     *
     * Counterpart to Solidity's `uint56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     *
     * _Available since v4.7._
     */
    function toUint56(uint256 value) internal pure returns (uint56) {
        require(value <= type(uint56).max, "SafeCast: value doesn't fit in 56 bits");
        return uint56(value);
    }

    /**
     * @dev Returns the downcasted uint48 from uint256, reverting on
     * overflow (when the input is greater than largest uint48).
     *
     * Counterpart to Solidity's `uint48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     *
     * _Available since v4.7._
     */
    function toUint48(uint256 value) internal pure returns (uint48) {
        require(value <= type(uint48).max, "SafeCast: value doesn't fit in 48 bits");
        return uint48(value);
    }

    /**
     * @dev Returns the downcasted uint40 from uint256, reverting on
     * overflow (when the input is greater than largest uint40).
     *
     * Counterpart to Solidity's `uint40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     *
     * _Available since v4.7._
     */
    function toUint40(uint256 value) internal pure returns (uint40) {
        require(value <= type(uint40).max, "SafeCast: value doesn't fit in 40 bits");
        return uint40(value);
    }

    /**
     * @dev Returns the downcasted uint32 from uint256, reverting on
     * overflow (when the input is greater than largest uint32).
     *
     * Counterpart to Solidity's `uint32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     *
     * _Available since v2.5._
     */
    function toUint32(uint256 value) internal pure returns (uint32) {
        require(value <= type(uint32).max, "SafeCast: value doesn't fit in 32 bits");
        return uint32(value);
    }

    /**
     * @dev Returns the downcasted uint24 from uint256, reverting on
     * overflow (when the input is greater than largest uint24).
     *
     * Counterpart to Solidity's `uint24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     *
     * _Available since v4.7._
     */
    function toUint24(uint256 value) internal pure returns (uint24) {
        require(value <= type(uint24).max, "SafeCast: value doesn't fit in 24 bits");
        return uint24(value);
    }

    /**
     * @dev Returns the downcasted uint16 from uint256, reverting on
     * overflow (when the input is greater than largest uint16).
     *
     * Counterpart to Solidity's `uint16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     *
     * _Available since v2.5._
     */
    function toUint16(uint256 value) internal pure returns (uint16) {
        require(value <= type(uint16).max, "SafeCast: value doesn't fit in 16 bits");
        return uint16(value);
    }

    /**
     * @dev Returns the downcasted uint8 from uint256, reverting on
     * overflow (when the input is greater than largest uint8).
     *
     * Counterpart to Solidity's `uint8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     *
     * _Available since v2.5._
     */
    function toUint8(uint256 value) internal pure returns (uint8) {
        require(value <= type(uint8).max, "SafeCast: value doesn't fit in 8 bits");
        return uint8(value);
    }

    /**
     * @dev Converts a signed int256 into an unsigned uint256.
     *
     * Requirements:
     *
     * - input must be greater than or equal to 0.
     *
     * _Available since v3.0._
     */
    function toUint256(int256 value) internal pure returns (uint256) {
        require(value >= 0, "SafeCast: value must be positive");
        return uint256(value);
    }

    /**
     * @dev Returns the downcasted int248 from int256, reverting on
     * overflow (when the input is less than smallest int248 or
     * greater than largest int248).
     *
     * Counterpart to Solidity's `int248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     *
     * _Available since v4.7._
     */
    function toInt248(int256 value) internal pure returns (int248 downcasted) {
        downcasted = int248(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 248 bits");
    }

    /**
     * @dev Returns the downcasted int240 from int256, reverting on
     * overflow (when the input is less than smallest int240 or
     * greater than largest int240).
     *
     * Counterpart to Solidity's `int240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     *
     * _Available since v4.7._
     */
    function toInt240(int256 value) internal pure returns (int240 downcasted) {
        downcasted = int240(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 240 bits");
    }

    /**
     * @dev Returns the downcasted int232 from int256, reverting on
     * overflow (when the input is less than smallest int232 or
     * greater than largest int232).
     *
     * Counterpart to Solidity's `int232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     *
     * _Available since v4.7._
     */
    function toInt232(int256 value) internal pure returns (int232 downcasted) {
        downcasted = int232(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 232 bits");
    }

    /**
     * @dev Returns the downcasted int224 from int256, reverting on
     * overflow (when the input is less than smallest int224 or
     * greater than largest int224).
     *
     * Counterpart to Solidity's `int224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     *
     * _Available since v4.7._
     */
    function toInt224(int256 value) internal pure returns (int224 downcasted) {
        downcasted = int224(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 224 bits");
    }

    /**
     * @dev Returns the downcasted int216 from int256, reverting on
     * overflow (when the input is less than smallest int216 or
     * greater than largest int216).
     *
     * Counterpart to Solidity's `int216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     *
     * _Available since v4.7._
     */
    function toInt216(int256 value) internal pure returns (int216 downcasted) {
        downcasted = int216(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 216 bits");
    }

    /**
     * @dev Returns the downcasted int208 from int256, reverting on
     * overflow (when the input is less than smallest int208 or
     * greater than largest int208).
     *
     * Counterpart to Solidity's `int208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     *
     * _Available since v4.7._
     */
    function toInt208(int256 value) internal pure returns (int208 downcasted) {
        downcasted = int208(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 208 bits");
    }

    /**
     * @dev Returns the downcasted int200 from int256, reverting on
     * overflow (when the input is less than smallest int200 or
     * greater than largest int200).
     *
     * Counterpart to Solidity's `int200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     *
     * _Available since v4.7._
     */
    function toInt200(int256 value) internal pure returns (int200 downcasted) {
        downcasted = int200(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 200 bits");
    }

    /**
     * @dev Returns the downcasted int192 from int256, reverting on
     * overflow (when the input is less than smallest int192 or
     * greater than largest int192).
     *
     * Counterpart to Solidity's `int192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     *
     * _Available since v4.7._
     */
    function toInt192(int256 value) internal pure returns (int192 downcasted) {
        downcasted = int192(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 192 bits");
    }

    /**
     * @dev Returns the downcasted int184 from int256, reverting on
     * overflow (when the input is less than smallest int184 or
     * greater than largest int184).
     *
     * Counterpart to Solidity's `int184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     *
     * _Available since v4.7._
     */
    function toInt184(int256 value) internal pure returns (int184 downcasted) {
        downcasted = int184(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 184 bits");
    }

    /**
     * @dev Returns the downcasted int176 from int256, reverting on
     * overflow (when the input is less than smallest int176 or
     * greater than largest int176).
     *
     * Counterpart to Solidity's `int176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     *
     * _Available since v4.7._
     */
    function toInt176(int256 value) internal pure returns (int176 downcasted) {
        downcasted = int176(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 176 bits");
    }

    /**
     * @dev Returns the downcasted int168 from int256, reverting on
     * overflow (when the input is less than smallest int168 or
     * greater than largest int168).
     *
     * Counterpart to Solidity's `int168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     *
     * _Available since v4.7._
     */
    function toInt168(int256 value) internal pure returns (int168 downcasted) {
        downcasted = int168(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 168 bits");
    }

    /**
     * @dev Returns the downcasted int160 from int256, reverting on
     * overflow (when the input is less than smallest int160 or
     * greater than largest int160).
     *
     * Counterpart to Solidity's `int160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     *
     * _Available since v4.7._
     */
    function toInt160(int256 value) internal pure returns (int160 downcasted) {
        downcasted = int160(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 160 bits");
    }

    /**
     * @dev Returns the downcasted int152 from int256, reverting on
     * overflow (when the input is less than smallest int152 or
     * greater than largest int152).
     *
     * Counterpart to Solidity's `int152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     *
     * _Available since v4.7._
     */
    function toInt152(int256 value) internal pure returns (int152 downcasted) {
        downcasted = int152(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 152 bits");
    }

    /**
     * @dev Returns the downcasted int144 from int256, reverting on
     * overflow (when the input is less than smallest int144 or
     * greater than largest int144).
     *
     * Counterpart to Solidity's `int144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     *
     * _Available since v4.7._
     */
    function toInt144(int256 value) internal pure returns (int144 downcasted) {
        downcasted = int144(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 144 bits");
    }

    /**
     * @dev Returns the downcasted int136 from int256, reverting on
     * overflow (when the input is less than smallest int136 or
     * greater than largest int136).
     *
     * Counterpart to Solidity's `int136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     *
     * _Available since v4.7._
     */
    function toInt136(int256 value) internal pure returns (int136 downcasted) {
        downcasted = int136(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 136 bits");
    }

    /**
     * @dev Returns the downcasted int128 from int256, reverting on
     * overflow (when the input is less than smallest int128 or
     * greater than largest int128).
     *
     * Counterpart to Solidity's `int128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     *
     * _Available since v3.1._
     */
    function toInt128(int256 value) internal pure returns (int128 downcasted) {
        downcasted = int128(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 128 bits");
    }

    /**
     * @dev Returns the downcasted int120 from int256, reverting on
     * overflow (when the input is less than smallest int120 or
     * greater than largest int120).
     *
     * Counterpart to Solidity's `int120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     *
     * _Available since v4.7._
     */
    function toInt120(int256 value) internal pure returns (int120 downcasted) {
        downcasted = int120(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 120 bits");
    }

    /**
     * @dev Returns the downcasted int112 from int256, reverting on
     * overflow (when the input is less than smallest int112 or
     * greater than largest int112).
     *
     * Counterpart to Solidity's `int112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     *
     * _Available since v4.7._
     */
    function toInt112(int256 value) internal pure returns (int112 downcasted) {
        downcasted = int112(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 112 bits");
    }

    /**
     * @dev Returns the downcasted int104 from int256, reverting on
     * overflow (when the input is less than smallest int104 or
     * greater than largest int104).
     *
     * Counterpart to Solidity's `int104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     *
     * _Available since v4.7._
     */
    function toInt104(int256 value) internal pure returns (int104 downcasted) {
        downcasted = int104(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 104 bits");
    }

    /**
     * @dev Returns the downcasted int96 from int256, reverting on
     * overflow (when the input is less than smallest int96 or
     * greater than largest int96).
     *
     * Counterpart to Solidity's `int96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     *
     * _Available since v4.7._
     */
    function toInt96(int256 value) internal pure returns (int96 downcasted) {
        downcasted = int96(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 96 bits");
    }

    /**
     * @dev Returns the downcasted int88 from int256, reverting on
     * overflow (when the input is less than smallest int88 or
     * greater than largest int88).
     *
     * Counterpart to Solidity's `int88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     *
     * _Available since v4.7._
     */
    function toInt88(int256 value) internal pure returns (int88 downcasted) {
        downcasted = int88(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 88 bits");
    }

    /**
     * @dev Returns the downcasted int80 from int256, reverting on
     * overflow (when the input is less than smallest int80 or
     * greater than largest int80).
     *
     * Counterpart to Solidity's `int80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     *
     * _Available since v4.7._
     */
    function toInt80(int256 value) internal pure returns (int80 downcasted) {
        downcasted = int80(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 80 bits");
    }

    /**
     * @dev Returns the downcasted int72 from int256, reverting on
     * overflow (when the input is less than smallest int72 or
     * greater than largest int72).
     *
     * Counterpart to Solidity's `int72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     *
     * _Available since v4.7._
     */
    function toInt72(int256 value) internal pure returns (int72 downcasted) {
        downcasted = int72(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 72 bits");
    }

    /**
     * @dev Returns the downcasted int64 from int256, reverting on
     * overflow (when the input is less than smallest int64 or
     * greater than largest int64).
     *
     * Counterpart to Solidity's `int64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     *
     * _Available since v3.1._
     */
    function toInt64(int256 value) internal pure returns (int64 downcasted) {
        downcasted = int64(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 64 bits");
    }

    /**
     * @dev Returns the downcasted int56 from int256, reverting on
     * overflow (when the input is less than smallest int56 or
     * greater than largest int56).
     *
     * Counterpart to Solidity's `int56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     *
     * _Available since v4.7._
     */
    function toInt56(int256 value) internal pure returns (int56 downcasted) {
        downcasted = int56(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 56 bits");
    }

    /**
     * @dev Returns the downcasted int48 from int256, reverting on
     * overflow (when the input is less than smallest int48 or
     * greater than largest int48).
     *
     * Counterpart to Solidity's `int48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     *
     * _Available since v4.7._
     */
    function toInt48(int256 value) internal pure returns (int48 downcasted) {
        downcasted = int48(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 48 bits");
    }

    /**
     * @dev Returns the downcasted int40 from int256, reverting on
     * overflow (when the input is less than smallest int40 or
     * greater than largest int40).
     *
     * Counterpart to Solidity's `int40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     *
     * _Available since v4.7._
     */
    function toInt40(int256 value) internal pure returns (int40 downcasted) {
        downcasted = int40(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 40 bits");
    }

    /**
     * @dev Returns the downcasted int32 from int256, reverting on
     * overflow (when the input is less than smallest int32 or
     * greater than largest int32).
     *
     * Counterpart to Solidity's `int32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     *
     * _Available since v3.1._
     */
    function toInt32(int256 value) internal pure returns (int32 downcasted) {
        downcasted = int32(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 32 bits");
    }

    /**
     * @dev Returns the downcasted int24 from int256, reverting on
     * overflow (when the input is less than smallest int24 or
     * greater than largest int24).
     *
     * Counterpart to Solidity's `int24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     *
     * _Available since v4.7._
     */
    function toInt24(int256 value) internal pure returns (int24 downcasted) {
        downcasted = int24(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 24 bits");
    }

    /**
     * @dev Returns the downcasted int16 from int256, reverting on
     * overflow (when the input is less than smallest int16 or
     * greater than largest int16).
     *
     * Counterpart to Solidity's `int16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     *
     * _Available since v3.1._
     */
    function toInt16(int256 value) internal pure returns (int16 downcasted) {
        downcasted = int16(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 16 bits");
    }

    /**
     * @dev Returns the downcasted int8 from int256, reverting on
     * overflow (when the input is less than smallest int8 or
     * greater than largest int8).
     *
     * Counterpart to Solidity's `int8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     *
     * _Available since v3.1._
     */
    function toInt8(int256 value) internal pure returns (int8 downcasted) {
        downcasted = int8(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 8 bits");
    }

    /**
     * @dev Converts an unsigned uint256 into a signed int256.
     *
     * Requirements:
     *
     * - input must be less than or equal to maxInt256.
     *
     * _Available since v3.0._
     */
    function toInt256(uint256 value) internal pure returns (int256) {
        // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive
        require(value <= uint256(type(int256).max), "SafeCast: value doesn't fit in an int256");
        return int256(value);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/ShortStrings.sol)

pragma solidity ^0.8.8;

import "./StorageSlot.sol";

// | string  | 0xAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA   |
// | length  | 0x                                                              BB |
type ShortString is bytes32;

/**
 * @dev This library provides functions to convert short memory strings
 * into a `ShortString` type that can be used as an immutable variable.
 *
 * Strings of arbitrary length can be optimized using this library if
 * they are short enough (up to 31 bytes) by packing them with their
 * length (1 byte) in a single EVM word (32 bytes). Additionally, a
 * fallback mechanism can be used for every other case.
 *
 * Usage example:
 *
 * ```solidity
 * contract Named {
 *     using ShortStrings for *;
 *
 *     ShortString private immutable _name;
 *     string private _nameFallback;
 *
 *     constructor(string memory contractName) {
 *         _name = contractName.toShortStringWithFallback(_nameFallback);
 *     }
 *
 *     function name() external view returns (string memory) {
 *         return _name.toStringWithFallback(_nameFallback);
 *     }
 * }
 * ```
 */
library ShortStrings {
    // Used as an identifier for strings longer than 31 bytes.
    bytes32 private constant _FALLBACK_SENTINEL = 0x00000000000000000000000000000000000000000000000000000000000000FF;

    error StringTooLong(string str);
    error InvalidShortString();

    /**
     * @dev Encode a string of at most 31 chars into a `ShortString`.
     *
     * This will trigger a `StringTooLong` error is the input string is too long.
     */
    function toShortString(string memory str) internal pure returns (ShortString) {
        bytes memory bstr = bytes(str);
        if (bstr.length > 31) {
            revert StringTooLong(str);
        }
        return ShortString.wrap(bytes32(uint256(bytes32(bstr)) | bstr.length));
    }

    /**
     * @dev Decode a `ShortString` back to a "normal" string.
     */
    function toString(ShortString sstr) internal pure returns (string memory) {
        uint256 len = byteLength(sstr);
        // using `new string(len)` would work locally but is not memory safe.
        string memory str = new string(32);
        /// @solidity memory-safe-assembly
        assembly {
            mstore(str, len)
            mstore(add(str, 0x20), sstr)
        }
        return str;
    }

    /**
     * @dev Return the length of a `ShortString`.
     */
    function byteLength(ShortString sstr) internal pure returns (uint256) {
        uint256 result = uint256(ShortString.unwrap(sstr)) & 0xFF;
        if (result > 31) {
            revert InvalidShortString();
        }
        return result;
    }

    /**
     * @dev Encode a string into a `ShortString`, or write it to storage if it is too long.
     */
    function toShortStringWithFallback(string memory value, string storage store) internal returns (ShortString) {
        if (bytes(value).length < 32) {
            return toShortString(value);
        } else {
            StorageSlot.getStringSlot(store).value = value;
            return ShortString.wrap(_FALLBACK_SENTINEL);
        }
    }

    /**
     * @dev Decode a string that was encoded to `ShortString` or written to storage using {setWithFallback}.
     */
    function toStringWithFallback(ShortString value, string storage store) internal pure returns (string memory) {
        if (ShortString.unwrap(value) != _FALLBACK_SENTINEL) {
            return toString(value);
        } else {
            return store;
        }
    }

    /**
     * @dev Return the length of a string that was encoded to `ShortString` or written to storage using {setWithFallback}.
     *
     * WARNING: This will return the "byte length" of the string. This may not reflect the actual length in terms of
     * actual characters as the UTF-8 encoding of a single character can span over multiple bytes.
     */
    function byteLengthWithFallback(ShortString value, string storage store) internal view returns (uint256) {
        if (ShortString.unwrap(value) != _FALLBACK_SENTINEL) {
            return byteLength(value);
        } else {
            return bytes(store).length;
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/StorageSlot.sol)
// This file was procedurally generated from scripts/generate/templates/StorageSlot.js.

pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```solidity
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, `uint256`._
 * _Available since v4.9 for `string`, `bytes`._
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    struct StringSlot {
        string value;
    }

    struct BytesSlot {
        bytes value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` with member `value` located at `slot`.
     */
    function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` representation of the string storage pointer `store`.
     */
    function getStringSlot(string storage store) internal pure returns (StringSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` with member `value` located at `slot`.
     */
    function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`.
     */
    function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/Math.sol";
import "./math/SignedMath.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toString(int256 value) internal pure returns (string memory) {
        return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMath.abs(value))));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

// Copyright (C) 2018  Argent Labs Ltd. <https://argent.xyz>

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.5.4 <0.9.0;

/**
 * @title IWallet
 * @notice Interface for the BaseWallet
 */
interface IWallet {
    /**
     * @notice Returns the wallet owner.
     * @return The wallet owner address.
     */
    function owner() external view returns (address);

    /**
     * @notice Returns the number of authorised modules.
     * @return The number of authorised modules.
     */
    function modules() external view returns (uint);

    /**
     * @notice Sets a new owner for the wallet.
     * @param _newOwner The new owner.
     */
    function setOwner(address _newOwner) external;

    /**
     * @notice Checks if a module is authorised on the wallet.
     * @param _module The module address to check.
     * @return `true` if the module is authorised, otherwise `false`.
     */
    function authorised(address _module) external view returns (bool);

    /**
     * @notice Returns the module responsible for a static call redirection.
     * @param _sig The signature of the static call.
     * @return the module doing the redirection
     */
    function enabled(bytes4 _sig) external view returns (address);

    /**
     * @notice Enables/Disables a module.
     * @param _module The target module.
     * @param _value Set to `true` to authorise the module.
     */
    function authoriseModule(address _module, bool _value) external;

    /**
    * @notice Enables a static method by specifying the target module to which the call must be delegated.
    * @param _module The target module.
    * @param _method The static method signature.
    */
    function enableStaticCall(address _module, bytes4 _method) external;
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.18;

/* solhint-disable no-inline-assembly */

/**
 * returned data from validateUserOp.
 * validateUserOp returns a uint256, with is created by `_packedValidationData` and parsed by `_parseValidationData`
 * @param aggregator - address(0) - the account validated the signature by itself.
 *              address(1) - the account failed to validate the signature.
 *              otherwise - this is an address of a signature aggregator that must be used to validate the signature.
 * @param validAfter - this UserOp is valid only after this timestamp.
 * @param validaUntil - this UserOp is valid only up to this timestamp.
 */
    struct ValidationData {
        address aggregator;
        uint48 validAfter;
        uint48 validUntil;
    }

//extract sigFailed, validAfter, validUntil.
// also convert zero validUntil to type(uint48).max
    function _parseValidationData(uint validationData) pure returns (ValidationData memory data) {
        address aggregator = address(uint160(validationData));
        uint48 validUntil = uint48(validationData >> 160);
        if (validUntil == 0) {
            validUntil = type(uint48).max;
        }
        uint48 validAfter = uint48(validationData >> (48 + 160));
        return ValidationData(aggregator, validAfter, validUntil);
    }

// intersect account and paymaster ranges.
    function _intersectTimeRange(uint256 validationData, uint256 paymasterValidationData) pure returns (ValidationData memory) {
        ValidationData memory accountValidationData = _parseValidationData(validationData);
        ValidationData memory pmValidationData = _parseValidationData(paymasterValidationData);
        address aggregator = accountValidationData.aggregator;
        if (aggregator == address(0)) {
            aggregator = pmValidationData.aggregator;
        }
        uint48 validAfter = accountValidationData.validAfter;
        uint48 validUntil = accountValidationData.validUntil;
        uint48 pmValidAfter = pmValidationData.validAfter;
        uint48 pmValidUntil = pmValidationData.validUntil;

        if (validAfter < pmValidAfter) validAfter = pmValidAfter;
        if (validUntil > pmValidUntil) validUntil = pmValidUntil;
        return ValidationData(aggregator, validAfter, validUntil);
    }

/**
 * helper to pack the return value for validateUserOp
 * @param data - the ValidationData to pack
 */
    function _packValidationData(ValidationData memory data) pure returns (uint256) {
        return uint160(data.aggregator) | (uint256(data.validUntil) << 160) | (uint256(data.validAfter) << (160 + 48));
    }

/**
 * helper to pack the return value for validateUserOp, when not using an aggregator
 * @param sigFailed - true for signature failure, false for success
 * @param validUntil last timestamp this UserOperation is valid (or zero for infinite)
 * @param validAfter first timestamp this UserOperation is valid
 */
    function _packValidationData(bool sigFailed, uint48 validUntil, uint48 validAfter) pure returns (uint256) {
        return (sigFailed ? 1 : 0) | (uint256(validUntil) << 160) | (uint256(validAfter) << (160 + 48));
    }

/**
 * keccak function over calldata.
 * @dev copy calldata into memory, do keccak and drop allocated memory. Strangely, this is more efficient than letting solidity do it.
 */
    function calldataKeccak(bytes calldata data) pure returns (bytes32 ret) {
        assembly {
            let mem := mload(0x40)
            let len := data.length
            calldatacopy(mem, data.offset, len)
            ret := keccak256(mem, len)
        }
    }

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.18;

/* solhint-disable no-inline-assembly */

import {calldataKeccak} from "../Helpers.sol";

/**
 * User Operation struct
 * @param sender the sender account of this request.
     * @param nonce unique value the sender uses to verify it is not a replay.
     * @param initCode if set, the account contract will be created by this constructor/
     * @param callData the method call to execute on this account.
     * @param callGasLimit the gas limit passed to the callData method call.
     * @param verificationGasLimit gas used for validateUserOp and validatePaymasterUserOp.
     * @param preVerificationGas gas not calculated by the handleOps method, but added to the gas paid. Covers batch overhead.
     * @param maxFeePerGas same as EIP-1559 gas parameter.
     * @param maxPriorityFeePerGas same as EIP-1559 gas parameter.
     * @param paymasterAndData if set, this field holds the paymaster address and paymaster-specific data. the paymaster will pay for the transaction instead of the sender.
     * @param signature sender-verified signature over the entire request, the EntryPoint address and the chain ID.
     */
    struct UserOperation {

        address sender;
        uint256 nonce;
        bytes initCode;
        bytes callData;
        uint256 callGasLimit;
        uint256 verificationGasLimit;
        uint256 preVerificationGas;
        uint256 maxFeePerGas;
        uint256 maxPriorityFeePerGas;
        bytes paymasterAndData;
        bytes signature;
    }

/**
 * Utility functions helpful when working with UserOperation structs.
 */
library UserOperationLib {

    function getSender(UserOperation calldata userOp) internal pure returns (address) {
        address data;
        //read sender from userOp, which is first userOp member (saves 800 gas...)
        assembly {data := calldataload(userOp)}
        return address(uint160(data));
    }

    //relayer/block builder might submit the TX with higher priorityFee, but the user should not
    // pay above what he signed for.
    function gasPrice(UserOperation calldata userOp) internal view returns (uint256) {
    unchecked {
        uint256 maxFeePerGas = userOp.maxFeePerGas;
        uint256 maxPriorityFeePerGas = userOp.maxPriorityFeePerGas;
        if (maxFeePerGas == maxPriorityFeePerGas) {
            //legacy mode (for networks that don't support basefee opcode)
            return maxFeePerGas;
        }
        return min(maxFeePerGas, maxPriorityFeePerGas + block.basefee);
    }
    }

    function pack(UserOperation calldata userOp) internal pure returns (bytes memory ret) {
        address sender = getSender(userOp);
        uint256 nonce = userOp.nonce;
        bytes32 hashInitCode = calldataKeccak(userOp.initCode);
        bytes32 hashCallData = calldataKeccak(userOp.callData);
        uint256 callGasLimit = userOp.callGasLimit;
        uint256 verificationGasLimit = userOp.verificationGasLimit;
        uint256 preVerificationGas = userOp.preVerificationGas;
        uint256 maxFeePerGas = userOp.maxFeePerGas;
        uint256 maxPriorityFeePerGas = userOp.maxPriorityFeePerGas;
        bytes32 hashPaymasterAndData = calldataKeccak(userOp.paymasterAndData);

        return abi.encode(
            sender, nonce,
            hashInitCode, hashCallData,
            callGasLimit, verificationGasLimit, preVerificationGas,
            maxFeePerGas, maxPriorityFeePerGas,
            hashPaymasterAndData
        );
    }

    function hash(UserOperation calldata userOp) internal pure returns (bytes32) {
        return keccak256(pack(userOp));
    }

    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.18;

import "../../account/interfaces/IWallet.sol";
import "../module-registry/interfaces/IModuleRegistry.sol";
import "../../storage/interfaces/IGuardianStorage.sol";
import "../../storage/interfaces/ITransferStorage.sol";
import "../interfaces/IModule.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/utils/Strings.sol";

/**
 * @title BaseModule
 * @notice Base Module contract that contains methods common to all Modules.
 */
abstract contract BaseModule is IModule {
    // Empty calldata
    bytes internal constant EMPTY_BYTES = "";
    // Mock token address for ETH
    address internal constant ETH_TOKEN = address(0);

    // The module registry
    IModuleRegistry internal immutable registry;
    // The guardians storage
    IGuardianStorage internal immutable guardianStorage;
    // The trusted contacts storage
    ITransferStorage internal immutable userWhitelist;

    event ModuleCreated(bytes32 name);

    event InvokeWalletResult(
        address indexed wallet,
        bytes32 indexed hash,
        bool success,
        uint value,
        string reason,
        uint256 gasUsed
    );

    enum OwnerSignature {
        Anyone, // Anyone
        Required, // Owner required
        Optional, // Owner and/or guardians
        Disallowed, // Guardians only
        Session // Session only
    }

    struct Session {
        address key;
        uint64 expires;
    }

    // Maps wallet to session
    mapping(address => Session) internal sessions;

    struct Lock {
        // the lock's release timestamp
        uint64 release;
        // the signature of the method that set the last lock
        bytes4 locker;
    }

    // Wallet specific lock storage
    mapping(address => Lock) internal locks;

    /**
     * @notice Throws if the wallet is not locked.
     */
    modifier onlyWhenLocked(address _wallet) {
        require(_isLocked(_wallet), "BM: wallet must be locked");
        _;
    }

    /**
     * @notice Throws if the wallet is locked.
     */
    modifier onlyWhenUnlocked(address _wallet) {
        require(!_isLocked(_wallet), "BM: wallet locked");
        _;
    }

    /**
     * @notice Throws if the sender is not the module itself.
     */
    modifier onlySelf() {
        require(_isSelf(msg.sender), "BM: must be module");
        _;
    }

    /**
     * @notice Throws if the sender is not the module itself or the owner of the target wallet.
     */
    modifier onlyWalletOwnerOrSelf(address _wallet) {
        require(
            _isSelf(msg.sender) || _isOwner(_wallet, msg.sender),
            "BM: must be wallet owner/self"
        );
        _;
    }

    modifier onlyWalletOrSelf(address _wallet) {
        require(
            _isSelf(msg.sender) || msg.sender == _wallet,
            "BM: must be wallet/self"
        );
        _;
    }

    /**
     * @dev Throws if the sender is not the target wallet of the call.
     */
    modifier onlyWallet(address _wallet) {
        require(msg.sender == _wallet, "BM: caller must be wallet");
        _;
    }

    constructor(
        IModuleRegistry _registry,
        IGuardianStorage _guardianStorage,
        ITransferStorage _userWhitelist,
        bytes32 _name
    ) {
        registry = _registry;
        guardianStorage = _guardianStorage;
        userWhitelist = _userWhitelist;
        emit ModuleCreated(_name);
    }

    /**
     * @notice Moves tokens that have been sent to the module by mistake.
     * @param _token The target token.
     */
    function recoverToken(address _token) external {
        uint total = IERC20(_token).balanceOf(address(this));
        IERC20(_token).transfer(address(registry), total);
    }

    function _clearSession(address _wallet) internal {
        delete sessions[_wallet];
    }

    /**
     * @notice Helper method to check if an address is the owner of a target wallet.
     * @param _wallet The target wallet.
     * @param _addr The address.
     */
    function _isOwner(
        address _wallet,
        address _addr
    ) internal view returns (bool) {
        return IWallet(_wallet).owner() == _addr;
    }

    /**
     * @notice Helper method to check if a wallet is locked.
     * @param _wallet The target wallet.
     */
    function _isLocked(address _wallet) internal view returns (bool) {
        return locks[_wallet].release > uint64(block.timestamp);
    }

    /**
     * @notice Helper method to check if an address is the module itself.
     * @param _addr The target address.
     */
    function _isSelf(address _addr) internal view returns (bool) {
        return _addr == address(this);
    }

    /**
     * @notice Helper method to invoke a wallet.
     * @param _wallet The target wallet.
     * @param _to The target address for the transaction.
     * @param _value The value of the transaction.
     * @param _data The data of the transaction.
     */
    function invokeWallet(
        address _wallet,
        address _to,
        uint256 _value,
        bytes memory _data
    ) internal returns (bytes memory _res) {
        bool success;
        (success, _res) = _wallet.call(
            abi.encodeWithSignature(
                "invoke(address,uint256,bytes)",
                _to,
                _value,
                _data
            )
        );
        if (success && _res.length > 0) {
            //_res is empty if _wallet is an "old" BaseWallet that can't return output values
            (_res) = abi.decode(_res, (bytes));
        } else if (_res.length > 0) {
            // solhint-disable-next-line no-inline-assembly
            assembly {
                returndatacopy(0, 0, returndatasize())
                revert(0, returndatasize())
            }
        } else if (!success) {
            revert("BM: wallet invoke reverted");
        }
    }

    function Error(string memory text) public pure returns (string memory) {
        return text;
    }

    function Panic(uint256 code) public pure returns (uint256) {
        return code;
    }

    function invokeWalletNoRevert(
        address _wallet,
        address _to,
        uint256 _value,
        bytes memory _data
    ) internal returns (bytes memory _res) {
        uint256 initialGas = gasleft(); // Capture initial gas


        bytes32 hash = keccak256(_data);
        bool success;
        (success, _res) = _wallet.call(
            abi.encodeWithSignature(
                "invoke(address,uint256,bytes)",
                _to,
                _value,
                _data
            )
        );

        uint256 gasUsed = initialGas - gasleft(); // Calculate gas used

        /// Signature for "Error(string)"
        bytes4 errorSignature = 0x08c379a0;
        /// Signature for "Panic(uint256)"
        bytes4 panicSignature = 0x4e487b71;

        if (success && _res.length > 0) {
            (_res) = abi.decode(_res, (bytes));
            emit InvokeWalletResult(
                _wallet,
                hash,
                true,
                _value,
                "BM: wallet invoke success",
                gasUsed
            );
        } else if (_res.length > 0) {
            string memory errorText;
            if (bytes4(_res) == errorSignature) {
                (, bytes memory response) = address(this).call(_res);
                errorText = string(
                    abi.encodePacked(
                        "revert reason: ",
                        abi.decode(response, (string))
                    )
                );
            } else if (bytes4(_res) == panicSignature) {
                (, bytes memory response) = address(this).call(_res);
                uint code = abi.decode(response, (uint));
                errorText = string(
                    abi.encodePacked("panic code: ", Strings.toHexString(code))
                );
            } else {
                errorText = "Unable to decode revert reason";
            }

            emit InvokeWalletResult(
                _wallet,
                hash,
                false,
                _value,
                string(
                    abi.encodePacked(
                        "BM: wallet invoke failed with ",
                        errorText
                    )
                ),
                gasUsed
            );
        } else if (!success) {
            emit InvokeWalletResult(
                _wallet,
                hash,
                false,
                _value,
                "BM: wallet invoke failed without revert reason",
                gasUsed
            );
        }
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.18;

import "@openzeppelin/contracts/utils/math/SafeCast.sol";
import "../common/Utils.sol";
import "./BaseModule.sol";

/**
 * @title EnterpriseTransactionManager
 * @notice Module to execute transactions in sequence to e.g. transfer tokens (ETH, ERC20, ERC721, ERC1155) or call third-party contracts.
 */

abstract contract EnterpriseTransactionManager is BaseModule {
    // Static calls
    bytes4 private constant ERC1271_IS_VALID_SIGNATURE =
        bytes4(keccak256("isValidSignature(bytes32,bytes)"));
    bytes4 private constant ERC721_RECEIVED =
        bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"));
    bytes4 private constant ERC1155_RECEIVED =
        bytes4(
            keccak256(
                "onERC1155Received(address,address,uint256,uint256,bytes)"
            )
        );
    bytes4 private constant ERC1155_BATCH_RECEIVED =
        bytes4(
            keccak256(
                "onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"
            )
        );
    bytes4 private constant ERC165_INTERFACE =
        bytes4(keccak256("supportsInterface(bytes4)"));

    struct Call {
        address to;
        uint256 value;
        bytes data;
    }

    // The time delay for adding a trusted contact
    uint256 internal immutable whitelistPeriod;

    // *************** Events *************************** //

    event AddedToWhitelist(
        address indexed wallet,
        address indexed target,
        uint64 whitelistAfter
    );
    event RemovedFromWhitelist(address indexed wallet, address indexed target);
    event SessionCreated(
        address indexed wallet,
        address sessionKey,
        uint64 expires
    );
    event SessionCleared(address indexed wallet, address sessionKey);

    // *************** Constructor ************************ //

    constructor(uint256 _whitelistPeriod) {
        whitelistPeriod = _whitelistPeriod;
    }

    // *************** External functions ************************ //

    /**
     * @notice Makes the target wallet execute a sequence of transactions authorised by the wallet owner.
     * The method doesn't revert if any of the inner transactions reverts.
     * @param _wallet The target wallet.
     * @param _transactions The sequence of transactions.
     */
    function multiCallNoRevert(
        address _wallet,
        Call[] calldata _transactions
    ) external onlySelf onlyWhenUnlocked(_wallet) returns (bytes[] memory) {
        bytes[] memory results = new bytes[](_transactions.length);
        for (uint i = 0; i < _transactions.length; i++) {
            require(
                _transactions[i].to != address(this) ||
                    //allow calls to address(this) only if the function signature matches that of the execute function in RelayerManager
                    (bytes4(_transactions[i].data[:4]) == 0x7d1c2e78),
                "TM: call not authorised"
            );
            results[i] = invokeWalletNoRevert(
                _wallet,
                _transactions[i].to,
                _transactions[i].value,
                _transactions[i].data
            );
        }
        return results;
    }

    /**
     * @notice Makes the target wallet execute a sequence of transactions authorised by the wallet owner.
     * The method reverts if any of the inner transactions reverts.
     * @param _wallet The target wallet.
     * @param _transactions The sequence of transactions.
     */
    function multiCall(
        address _wallet,
        Call[] calldata _transactions
    ) external onlySelf onlyWhenUnlocked(_wallet) returns (bytes[] memory) {
        bytes[] memory results = new bytes[](_transactions.length);

        for (uint i = 0; i < _transactions.length; i++) {
            // Check if the call is to address(this) and if the function selector matches the execute function
            require(
                _transactions[i].to != address(this) ||
                    //allow calls to address(this) only if the function signature matches that of the execute function in RelayerManager
                    (bytes4(_transactions[i].data[:4]) == 0x7d1c2e78),
                "TM: call not authorised"
            );
            results[i] = invokeWallet(
                _wallet,
                _transactions[i].to,
                _transactions[i].value,
                _transactions[i].data
            );
        }
        return results;
    }

    /**
     * @inheritdoc IModule
     */
    function supportsStaticCall(
        bytes4 _methodId
    ) external pure override returns (bool _isSupported) {
        return
            _methodId == ERC1271_IS_VALID_SIGNATURE ||
            _methodId == ERC721_RECEIVED ||
            _methodId == ERC165_INTERFACE ||
            _methodId == ERC1155_RECEIVED ||
            _methodId == ERC1155_BATCH_RECEIVED;
    }

    /** ******************* Callbacks ************************** */

    /**
     * @notice Returns true if this contract implements the interface defined by
     * `interfaceId` (see https://eips.ethereum.org/EIPS/eip-165).
     */

    function supportsInterface(
        bytes4 _interfaceID
    ) external pure returns (bool) {
        return
            _interfaceID == ERC165_INTERFACE ||
            _interfaceID == (ERC1155_RECEIVED ^ ERC1155_BATCH_RECEIVED);
    }

    /**
     * @notice Implementation of EIP 1271.
     * Should return whether the signature provided is valid for the provided data.
     * @param _msgHash Hash of a message signed on the behalf of address(this)
     * @param _signature Signature byte array associated with _msgHash
     */

    function isValidSignature(
        bytes32 _msgHash,
        bytes memory _signature
    ) external view returns (bytes4) {
        require(_signature.length == 65, "TM: invalid signature length");

        address signer = Utils.recoverSigner(_msgHash, _signature, 0);
        require(_isOwner(msg.sender, signer), "TM: Invalid signer");
        return ERC1271_IS_VALID_SIGNATURE;
    }

    fallback() external {
        bytes4 methodId = Utils.functionPrefix(msg.data);
        if (
            methodId == ERC721_RECEIVED ||
            methodId == ERC1155_RECEIVED ||
            methodId == ERC1155_BATCH_RECEIVED
        ) {
            // solhint-disable-next-line no-inline-assembly
            assembly {
                calldatacopy(0, 0, 0x04)
                return(0, 0x20)
            }
        }
    }

    // *************** Internal Functions ********************* //

    function enableDefaultStaticCalls(address _wallet) internal {
        // setup this module as static call executor
        IWallet(_wallet).enableStaticCall(
            address(this),
            ERC1271_IS_VALID_SIGNATURE
        );
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.18;

import "@openzeppelin/contracts/utils/math/Math.sol";
import "../common/Utils.sol";
import "./BaseModule.sol";
import "../../storage/interfaces/IGuardianStorage.sol";

import "@openzeppelin/contracts/utils/cryptography/EIP712.sol";
import "@openzeppelin/contracts/utils/Counters.sol";

import "@openzeppelin/contracts/utils/cryptography/SignatureChecker.sol";

/**
 * @title RelayerManager
 * @notice Abstract Module to execute transactions signed by ETH-less accounts and sent by a relayer.
 */

abstract contract RelayerManager is BaseModule, EIP712 {
    // solhint-disable-next-line var-name-mixedcase
    bytes32 private constant _TRANSACTION_TYPEHASH =
        keccak256(
            "Transaction(address wallet,bytes data,uint256 nonce,uint256 deadline)"
        );

    mapping(address => mapping(bytes32 => bool)) private _usedSignHashes;

    event TransactionExecuted(
        address indexed wallet,
        bool indexed success,
        bytes returnData,
        bytes32 signedHash
    );
    event Refund(
        address indexed wallet,
        address indexed refundAddress,
        address refundToken,
        uint256 refundAmount
    );

    // *************** Constructor ************************ //

    /**
     * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `"1"`.
     *
     *
     */
    constructor(string memory name) EIP712(name, "1") {}

    /* ***************** External methods ************************* */

    /**
     * @notice Gets the number of valid signatures that must be provided to execute a
     * specific relayed transaction.
     * @param _wallet The target wallet.
     * @param _data The data of the relayed transaction.
     * @return The number of required signatures and the wallet owner signature requirement.
     */
    function getRequiredSignatures(
        address _wallet,
        bytes calldata _data
    ) public view virtual returns (uint256, OwnerSignature);

    /**
     * @notice Executes a relayed transaction.
     * @param _wallet The target wallet.
     * @param _data The data for the relayed transaction
     * @param _nonce The nonce used to prevent replay attacks.
     * @param _deadline The deadline for the relayed transaction.
     * @param _signatures The signatures as a concatenated byte array.
     */
    function execute(
        address _wallet,
        bytes calldata _data,
        uint256 _nonce,
        uint256 _deadline,
        bytes calldata _signatures
    ) external returns (bool) {
        require(_deadline >= block.timestamp, "RM: deadline passed");
        require(verifyData(_wallet, _data), "RM: Target of _data != _wallet");
        require(!_isLocked(_wallet), "RM: Locked wallet refund");

        uint256 requiredSignatures;
        OwnerSignature ownerSignatureRequirement;
        bool success;
        bytes memory returnData;

        (requiredSignatures, ownerSignatureRequirement) = getRequiredSignatures(
            _wallet,
            _data
        );

        require(
            requiredSignatures > 0 ||
                ownerSignatureRequirement == OwnerSignature.Anyone,
            "RM: Wrong signature requirement"
        );
        require(
            requiredSignatures * 65 == _signatures.length,
            "RM: Wrong number of signatures"
        );

        bytes32 hash = getSignHash(_wallet, _deadline, _data, _nonce);

        if (ownerSignatureRequirement == OwnerSignature.Session) {
            require(validateSession(_wallet), "RM: Invalid session");
        } else {
            require(
                validateSignatures(
                    _wallet,
                    hash,
                    _signatures,
                    ownerSignatureRequirement
                ),
                "RM: Invalid signatures"
            );
        }

        require(
            checkAndUpdateUniqueness(_wallet, hash),
            "RM: Relayed tx already executed"
        );

        (success, returnData) = address(this).call(_data);

        emit TransactionExecuted(_wallet, success, returnData, hash);
        return success;
    }

    /**
     * @notice Checks if a transaction identified by its sign hash has already been executed.
     * @param _wallet The target wallet.
     * @param _signHash The sign hash of the transaction.
     */
    function isExecutedTx(
        address _wallet,
        bytes32 _signHash
    ) public view returns (bool executed) {
        return _usedSignHashes[_wallet][_signHash];
    }

    /**
     * @notice Gets the last stored session for a wallet.
     * @param _wallet The target wallet.
     */
    function getSession(
        address _wallet
    ) external view returns (address key, uint64 expires) {
        return (sessions[_wallet].key, sessions[_wallet].expires);
    }

    /**
     * @notice Validates the signatures provided with a relayed transaction.
     * @param _wallet The target wallet.
     * @param _signHash The sign hash of the transaction.
     * @param _signatures The signatures as a concatenated bytes array.
     * @param _option An OwnerSignature enum indicating whether the owner is required, optional or disallowed.
     * @return A boolean indicating whether the signatures are valid.
     */
    function validateSignatures(
        address _wallet,
        bytes32 _signHash,
        bytes calldata _signatures,
        OwnerSignature _option
    ) internal view returns (bool) {
        if (_signatures.length == 0) {
            return true;
        }
        address lastSigner = address(0);
        address[] memory guardians;
        if (_option != OwnerSignature.Required || _signatures.length > 65) {
            guardians = guardianStorage.getGuardians(_wallet); // guardians are only read if they may be needed
        }

        for (uint256 i = 0; i < _signatures.length / 65; i++) {
            bytes memory signature = new bytes(65);

            assembly {
                // Calculate the offset for the signature based on the index
                let offset := add(mul(i, 65), _signatures.offset)

                // Copy 65 bytes from the calculated offset in calldata to the memory location of the signature array
                calldatacopy(add(signature, 32), offset, 65)
            }
            if (i == 0) {
                bool ownerFound;
                ownerFound = SignatureChecker.isValidSignatureNow(
                    IWallet(_wallet).owner(),
                    _signHash,
                    signature
                );
                if (_option == OwnerSignature.Required) {
                    // First signer must be owner
                    if (ownerFound) {
                        continue;
                    }
                    return false;
                } else if (_option == OwnerSignature.Optional) {
                    // First signer can be owner
                    if (ownerFound) {
                        continue;
                    }
                }
            }

            bool guardianFound;
            for (uint256 j = 0; j < guardians.length; j++) {
                if (
                    SignatureChecker.isValidSignatureNow(
                        guardians[j],
                        _signHash,
                        signature
                    )
                ) {
                    if (guardians[j] <= lastSigner) {
                        return false; // Signers must be different
                    }
                    lastSigner = guardians[j];
                    guardianFound = true;
                    break;
                }
            }

            if (!guardianFound) {
                return false;
            }
        }
        return true;
    }

    /**
     * @notice Validates the signature provided when a session key was used.
     * @param _wallet The target wallet.
     * @return A boolean indicating whether the signature is valid.
     */
    function validateSession(address _wallet) internal view returns (bool) {
        Session memory session = sessions[_wallet];
        return (msg.sender == _wallet && session.expires >= block.timestamp);
    }

    /**
     * @notice Checks that the wallet address provided as the first parameter of _data matches _wallet
     * @return false if the addresses are different.
     */
    function verifyData(
        address _wallet,
        bytes calldata _data
    ) internal pure returns (bool) {
        require(_data.length >= 36, "RM: Invalid dataWallet");
        address dataWallet = abi.decode(_data[4:], (address));
        return dataWallet == _wallet;
    }

    /**
     * @notice Checks if the relayed transaction is unique. If yes the state is updated.
     * @param _wallet The target wallet.
     * @param _signHash The signed hash of the transaction.
     * @return true if the transaction is unique.
     */
    function checkAndUpdateUniqueness(
        address _wallet,
        bytes32 _signHash
    ) internal returns (bool) {
        if (_usedSignHashes[_wallet][_signHash]) {
            return false;
        } else {
            _usedSignHashes[_wallet][_signHash] = true;
            return true;
        }
    }

    /**
     * @notice Generates the signed hash of a relayed transaction.
     * @param _wallet The starting address for the relayed transaction (should be the relayer module)
     * @param _deadline The value for the relayed transaction.
     * @param _data The data for the relayed transaction which includes the wallet address.
     * @param _nonce The nonce used to prevent replay attacks.
     */
    function getSignHash(
        address _wallet,
        uint256 _deadline,
        bytes memory _data,
        uint256 _nonce
    ) internal view returns (bytes32) {
        bytes32 structHash = keccak256(
            abi.encode(
                _TRANSACTION_TYPEHASH,
                _wallet,
                keccak256(_data),
                _nonce,
                _deadline
            )
        );
        return _hashTypedDataV4(structHash);

    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.18;

import "@openzeppelin/contracts/utils/math/SafeCast.sol";
import "../common/Utils.sol";
import "./BaseModule.sol";
import "../../account/interfaces/IWallet.sol";
import "@openzeppelin/contracts/proxy/utils/UUPSUpgradeable.sol";

/**
 * @title SecurityManager
 * @notice Abstract module implementing the key security features of the wallet: guardians, lock and recovery.
 */
abstract contract SecurityManager is BaseModule {

    struct RecoveryConfig {
        address recovery;
        uint64 executeAfter;
        uint32 guardianCount;
    }

    struct GuardianManagerConfig {
        // The time at which a guardian addition or revokation will be confirmable by the owner
        mapping (bytes32 => uint256) pending;
    }

    // Wallet specific storage for recovery
    mapping (address => RecoveryConfig) internal recoveryConfigs;
    // Wallet specific storage for pending guardian addition/revokation
    mapping (address => GuardianManagerConfig) internal guardianConfigs;


    // Recovery period
    uint256 internal immutable recoveryPeriod;
    // Lock period
    uint256 internal immutable lockPeriod;
    // The security period to add/remove guardians
    uint256 internal immutable securityPeriod;
    // The security window
    uint256 internal immutable securityWindow;

    // *************** Events *************************** //

    event RecoveryExecuted(address indexed wallet, address indexed _recovery, uint64 executeAfter);
    event RecoveryFinalized(address indexed wallet, address indexed _recovery);
    event RecoveryCanceled(address indexed wallet, address indexed _recovery);
    event OwnershipTransfered(address indexed wallet, address indexed _newOwner);
    event WalletUpgraded(address indexed wallet, address indexed _newImplementation);
    event Locked(address indexed wallet, uint64 releaseAfter);
    event Unlocked(address indexed wallet);
    event GuardianAdditionRequested(address indexed wallet, address indexed guardian, uint256 executeAfter);
    event GuardianRevokationRequested(address indexed wallet, address indexed guardian, uint256 executeAfter);
    event GuardianAdditionCancelled(address indexed wallet, address indexed guardian);
    event GuardianRevokationCancelled(address indexed wallet, address indexed guardian);
    event GuardianAdded(address indexed wallet, address indexed guardian);
    event GuardianRevoked(address indexed wallet, address indexed guardian);
    // *************** Modifiers ************************ //

    /**
     * @notice Throws if there is no ongoing recovery procedure.
     */
    modifier onlyWhenRecovery(address _wallet) {
        require(recoveryConfigs[_wallet].executeAfter > 0, "SM: no ongoing recovery");
        _;
    }

    /**
     * @notice Throws if there is an ongoing recovery procedure.
     */
    modifier notWhenRecovery(address _wallet) {
        require(recoveryConfigs[_wallet].executeAfter == 0, "SM: ongoing recovery");
        _;
    }

    /**
     * @notice Throws if the caller is not a guardian for the wallet or the module itself.
     */
    modifier onlyGuardianOrSelf(address _wallet) {
        require(_isSelf(msg.sender) || isGuardian(_wallet, msg.sender), "SM: must be guardian/self");
        _;
    }

    // *************** Constructor ************************ //

    constructor(
        uint256 _recoveryPeriod,
        uint256 _securityPeriod,
        uint256 _securityWindow,
        uint256 _lockPeriod
    ) {
        // For the wallet to be secure we must have recoveryPeriod >= securityPeriod + securityWindow
        // where securityPeriod and securityWindow are the security parameters of adding/removing guardians.
        require(_lockPeriod >= _recoveryPeriod, "SM: insecure lock period");
        require(_recoveryPeriod >= _securityPeriod + _securityWindow, "SM: insecure security periods");
        recoveryPeriod = _recoveryPeriod;
        lockPeriod = _lockPeriod;
        securityWindow = _securityWindow;
        securityPeriod = _securityPeriod;
    }

    // *************** External functions ************************ //

    // *************** Recovery functions ************************ //

    /**
     * @notice Lets the guardians start the execution of the recovery procedure.
     * Once triggered the recovery is pending for the security period before it can be finalized.
     * Must be confirmed by N guardians, where N = ceil(Nb Guardians / 2).
     * @param _wallet The target wallet.
     * @param _recovery The address to which ownership should be transferred.
     */
    function executeRecovery(address _wallet, address _recovery) external onlySelf() notWhenRecovery(_wallet) {
        validateNewOwner(_wallet, _recovery);
        uint64 executeAfter = uint64(block.timestamp + recoveryPeriod);
        recoveryConfigs[_wallet] = RecoveryConfig(_recovery, executeAfter, uint32(guardianStorage.guardianCount(_wallet)));
        _setLock(_wallet, block.timestamp + lockPeriod, SecurityManager.executeRecovery.selector);
        emit RecoveryExecuted(_wallet, _recovery, executeAfter);
    }

    /**
     * @notice Finalizes an ongoing recovery procedure if the security period is over.
     * The method is public and callable by anyone to enable orchestration.
     * @param _wallet The target wallet.
     */
    function finalizeRecovery(address _wallet) external onlyWhenRecovery(_wallet) {
        RecoveryConfig storage config = recoveryConfigs[_wallet];
        require(uint64(block.timestamp) > config.executeAfter, "SM: ongoing recovery period");
        address recoveryOwner = config.recovery;
        delete recoveryConfigs[_wallet];

        _clearSession(_wallet);

        IWallet(_wallet).setOwner(recoveryOwner);
        _setLock(_wallet, 0, bytes4(0));

        emit RecoveryFinalized(_wallet, recoveryOwner);
    }

    /**
     * @notice Lets the owner cancel an ongoing recovery procedure.
     * Must be confirmed by N guardians, where N = ceil(Nb Guardian at executeRecovery + 1) / 2) - 1.
     * @param _wallet The target wallet.
     */
    function cancelRecovery(address _wallet) external onlySelf() onlyWhenRecovery(_wallet) {
        address recoveryOwner = recoveryConfigs[_wallet].recovery;
        delete recoveryConfigs[_wallet];
        _setLock(_wallet, 0, bytes4(0));

        emit RecoveryCanceled(_wallet, recoveryOwner);
    }

    /**
     * @notice Lets the owner transfer the wallet ownership. This is executed immediately.
     * @param _wallet The target wallet.
     * @param _newOwner The address to which ownership should be transferred.
     */
    function transferOwnership(address _wallet, address _newOwner) external onlySelf() onlyWhenUnlocked(_wallet) {
        validateNewOwner(_wallet, _newOwner);
        IWallet(_wallet).setOwner(_newOwner);

        emit OwnershipTransfered(_wallet, _newOwner);
    }

    /**
     * @notice Lets the owner upgrade the wallet. This is executed immediately.
     * @param _wallet The target wallet.
     * @param _newImplementation The address of the new implementation.
     */
    function upgradeWallet(address _wallet, address _newImplementation) external onlySelf() onlyWhenUnlocked(_wallet) {
        //TODO: validate new implementation
        UUPSUpgradeable(_wallet).upgradeTo(_newImplementation);

        emit WalletUpgraded(_wallet, _newImplementation);
    }

    /**
    * @notice Gets the details of the ongoing recovery procedure if any.
    * @param _wallet The target wallet.
    */
    function getRecovery(address _wallet) external view returns(address _address, uint64 _executeAfter, uint32 _guardianCount) {
        RecoveryConfig storage config = recoveryConfigs[_wallet];
        return (config.recovery, config.executeAfter, config.guardianCount);
    }

    // *************** Lock functions ************************ //

    /**
     * @notice Lets a guardian lock a wallet.
     * @param _wallet The target wallet.
     */
    function lock(address _wallet) external onlyGuardianOrSelf(_wallet) onlyWhenUnlocked(_wallet) {
        _setLock(_wallet, block.timestamp + lockPeriod, SecurityManager.lock.selector);
        emit Locked(_wallet, uint64(block.timestamp + lockPeriod));
    }

    /**
     * @notice Lets a guardian unlock a locked wallet.
     * @param _wallet The target wallet.
     */
    function unlock(address _wallet) external onlyGuardianOrSelf(_wallet) onlyWhenLocked(_wallet) {
        require(locks[_wallet].locker == SecurityManager.lock.selector, "SM: cannot unlock");
        _setLock(_wallet, 0, bytes4(0));
        emit Unlocked(_wallet);
    }

    /**
     * @notice Returns the release time of a wallet lock or 0 if the wallet is unlocked.
     * @param _wallet The target wallet.
     * @return _releaseAfter The epoch time at which the lock will release (in seconds).
     */
    function getLock(address _wallet) external view returns(uint64 _releaseAfter) {
        return _isLocked(_wallet) ? locks[_wallet].release : 0;
    }

    /**
     * @notice Checks if a wallet is locked.
     * @param _wallet The target wallet.
     * @return _isLocked `true` if the wallet is locked otherwise `false`.
     */
    function isLocked(address _wallet) external view returns (bool) {
        return _isLocked(_wallet);
    }

    // *************** Guardian functions ************************ //

    /**
     * @notice Lets the owner add a guardian to its wallet.
     * The first guardian is added immediately. All following additions must be confirmed
     * by calling the confirmGuardianAddition() method.
     * @param _wallet The target wallet.
     * @param _guardian The guardian to add.
     */
    function addGuardian(address _wallet, address _guardian) external onlyWalletOrSelf(_wallet) onlyWhenUnlocked(_wallet) {
        require(!_isOwner(_wallet, _guardian), "SM: guardian cannot be owner");
        require(!isGuardian(_wallet, _guardian), "SM: duplicate guardian");
        // Guardians must either be an EOA or a contract with an owner()
        // method that returns an address with a 25000 gas stipend.
        // Note that this test is not meant to be strict and can be bypassed by custom malicious contracts.
        (bool success,) = _guardian.call{gas: 25000}(abi.encodeWithSignature("owner()"));
        require(success, "SM: must be EOA/Indid wallet");

        bytes32 id = keccak256(abi.encodePacked(_wallet, _guardian, "addition"));
        GuardianManagerConfig storage config = guardianConfigs[_wallet];
        require(
            config.pending[id] == 0 || block.timestamp > config.pending[id] + securityWindow,
            "SM: duplicate pending addition");
        config.pending[id] = block.timestamp + securityPeriod;
        emit GuardianAdditionRequested(_wallet, _guardian, block.timestamp + securityPeriod);
    }

    /**
     * @notice Confirms the pending addition of a guardian to a wallet.
     * The method must be called during the confirmation window and can be called by anyone to enable orchestration.
     * @param _wallet The target wallet.
     * @param _guardian The guardian.
     */
    function confirmGuardianAddition(address _wallet, address _guardian) external onlyWhenUnlocked(_wallet) {
        bytes32 id = keccak256(abi.encodePacked(_wallet, _guardian, "addition"));
        GuardianManagerConfig storage config = guardianConfigs[_wallet];
        require(config.pending[id] > 0, "SM: unknown pending addition");
        require(config.pending[id] < block.timestamp, "SM: pending addition not over");
        require(block.timestamp < config.pending[id] + securityWindow, "SM: pending addition expired");
        guardianStorage.addGuardian(_wallet, _guardian);
        emit GuardianAdded(_wallet, _guardian);
        delete config.pending[id];
    }

    /**
     * @notice Lets the owner cancel a pending guardian addition.
     * @param _wallet The target wallet.
     * @param _guardian The guardian.
     */
    function cancelGuardianAddition(address _wallet, address _guardian) external onlyWalletOrSelf(_wallet) onlyWhenUnlocked(_wallet) {
        bytes32 id = keccak256(abi.encodePacked(_wallet, _guardian, "addition"));
        GuardianManagerConfig storage config = guardianConfigs[_wallet];
        require(config.pending[id] > 0, "SM: unknown pending addition");
        delete config.pending[id];
        emit GuardianAdditionCancelled(_wallet, _guardian);
    }

    /**
     * @notice Lets the owner revoke a guardian from its wallet.
     * @dev Revokation must be confirmed by calling the confirmGuardianRevokation() method.
     * @param _wallet The target wallet.
     * @param _guardian The guardian to revoke.
     */
    function revokeGuardian(address _wallet, address _guardian) external onlyWalletOrSelf(_wallet) {
        require(isGuardian(_wallet, _guardian), "SM: must be existing guardian");
        bytes32 id = keccak256(abi.encodePacked(_wallet, _guardian, "revokation"));
        GuardianManagerConfig storage config = guardianConfigs[_wallet];
        require(
            config.pending[id] == 0 || block.timestamp > config.pending[id] + securityWindow,
            "SM: duplicate pending revoke"); // TODO need to allow if confirmation window passed
        config.pending[id] = block.timestamp + securityPeriod;
        emit GuardianRevokationRequested(_wallet, _guardian, block.timestamp + securityPeriod);
    }

    /**
     * @notice Confirms the pending revokation of a guardian to a wallet.
     * The method must be called during the confirmation window and can be called by anyone to enable orchestration.
     * @param _wallet The target wallet.
     * @param _guardian The guardian.
     */
    function confirmGuardianRevokation(address _wallet, address _guardian) external {
        bytes32 id = keccak256(abi.encodePacked(_wallet, _guardian, "revokation"));
        GuardianManagerConfig storage config = guardianConfigs[_wallet];
        require(config.pending[id] > 0, "SM: unknown pending revoke");
        require(config.pending[id] < block.timestamp, "SM: pending revoke not over");
        require(block.timestamp < config.pending[id] + securityWindow, "SM: pending revoke expired");
        guardianStorage.revokeGuardian(_wallet, _guardian);
        emit GuardianRevoked(_wallet, _guardian);
        delete config.pending[id];
    }

    /**
     * @notice Lets the owner cancel a pending guardian revokation.
     * @param _wallet The target wallet.
     * @param _guardian The guardian.
     */
    function cancelGuardianRevokation(address _wallet, address _guardian) external onlyWalletOrSelf(_wallet) onlyWhenUnlocked(_wallet) {
        bytes32 id = keccak256(abi.encodePacked(_wallet, _guardian, "revokation"));
        GuardianManagerConfig storage config = guardianConfigs[_wallet];
        require(config.pending[id] > 0, "SM: unknown pending revoke");
        delete config.pending[id];
        emit GuardianRevokationCancelled(_wallet, _guardian);
    }

    /**
     * @notice Checks if an address is a guardian for a wallet.
     * @param _wallet The target wallet.
     * @param _guardian The address to check.
     * @return _isGuardian `true` if the address is a guardian for the wallet otherwise `false`.
     */
    function isGuardian(address _wallet, address _guardian) public view returns (bool _isGuardian) {
        return guardianStorage.isGuardian(_wallet, _guardian);
    }

    /**
     * @notice Counts the number of active guardians for a wallet.
     * @param _wallet The target wallet.
     * @return _count The number of active guardians for a wallet.
     */
    function guardianCount(address _wallet) external view returns (uint256 _count) {
        return guardianStorage.guardianCount(_wallet);
    }

    /**
     * @notice Get the active guardians for a wallet.
     * @param _wallet The target wallet.
     * @return _guardians the active guardians for a wallet.
     */
    function getGuardians(address _wallet) external view returns (address[] memory _guardians) {
        return guardianStorage.getGuardians(_wallet);
    }

    // *************** Internal Functions ********************* //

    function validateNewOwner(address _wallet, address _newOwner) internal view {
        require(_newOwner != address(0), "SM: new owner cannot be null");
        require(!isGuardian(_wallet, _newOwner), "SM: new owner cannot be guardian");
    }

    function _setLock(address _wallet, uint256 _releaseAfter, bytes4 _locker) internal {
        locks[_wallet] = Lock(SafeCast.toUint64(_releaseAfter), _locker);
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.18;

import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
import "../../base/interfaces/UserOperation.sol";
import "../../account/interfaces/IWallet.sol";
import "../interfaces/ISignatureModule.sol";

abstract contract SignatureModule is ISignatureModule{
    //is ISignatureModule {
    using ECDSA for bytes32;
    //return value in case of signature failure, with no time-range.
    // equivalent to _packValidationData(true,0,0);
    uint256 internal constant SIG_VALIDATION_FAILED = 1;

    constructor() {}

    function isValidSignature(
        UserOperation calldata _userOp,
        bytes32 _userOpHash
    ) public view override returns (uint256 validationData) {
        bytes32 hash = _userOpHash.toEthSignedMessageHash();
        address _owner = IWallet(msg.sender).owner();
        if (_owner != hash.recover(_userOp.signature))
            return SIG_VALIDATION_FAILED;
        return 0;
    }

    function isSignatureModule() external pure override returns (bool) {
        return true;
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.18;

/**
 * @title Utils
 * @notice Common utility methods used by modules.
 */
library Utils {

    // ERC20, ERC721 & ERC1155 transfers & approvals
    bytes4 private constant ERC20_TRANSFER = bytes4(keccak256("transfer(address,uint256)"));
    bytes4 private constant ERC20_APPROVE = bytes4(keccak256("approve(address,uint256)"));
    bytes4 private constant ERC721_SET_APPROVAL_FOR_ALL = bytes4(keccak256("setApprovalForAll(address,bool)"));
    bytes4 private constant ERC721_TRANSFER_FROM = bytes4(keccak256("transferFrom(address,address,uint256)"));
    bytes4 private constant ERC721_SAFE_TRANSFER_FROM = bytes4(keccak256("safeTransferFrom(address,address,uint256)"));
    bytes4 private constant ERC721_SAFE_TRANSFER_FROM_BYTES = bytes4(keccak256("safeTransferFrom(address,address,uint256,bytes)"));
    bytes4 private constant ERC1155_SAFE_TRANSFER_FROM = bytes4(keccak256("safeTransferFrom(address,address,uint256,uint256,bytes)"));

    bytes4 private constant OWNER_SIG = 0x8da5cb5b;
    /**
    * @notice Helper method to recover the signer at a given position from a list of concatenated signatures.
    * @param _signedHash The signed hash
    * @param _signatures The concatenated signatures.
    * @param _index The index of the signature to recover.
    */
    function recoverSigner(bytes32 _signedHash, bytes memory _signatures, uint _index) internal pure returns (address) {
        uint8 v;
        bytes32 r;
        bytes32 s;
        // we jump 32 (0x20) as the first slot of bytes contains the length
        // we jump 65 (0x41) per signature
        // for v we load 32 bytes ending with v (the first 31 come from s) then apply a mask
        // solhint-disable-next-line no-inline-assembly
        assembly {
            r := mload(add(_signatures, add(0x20,mul(0x41,_index))))
            s := mload(add(_signatures, add(0x40,mul(0x41,_index))))
            v := and(mload(add(_signatures, add(0x41,mul(0x41,_index)))), 0xff)
        }
        require(v == 27 || v == 28, "Utils: bad v value in signature");

        address recoveredAddress = ecrecover(_signedHash, v, r, s);
        require(recoveredAddress != address(0), "Utils: ecrecover returned 0");
        return recoveredAddress;
    }

    /**
    * @notice Helper method to recover the spender from a contract call. 
    * The method returns the contract unless the call is to a standard method of a ERC20/ERC721/ERC1155 token
    * in which case the spender is recovered from the data.
    * @param _to The target contract.
    * @param _data The data payload.
    */
    function recoverSpender(address _to, bytes memory _data) internal pure returns (address spender) {
        if(_data.length >= 68) {
            bytes4 methodId;
            // solhint-disable-next-line no-inline-assembly
            assembly {
                methodId := mload(add(_data, 0x20))
            }
            if(
                methodId == ERC20_TRANSFER ||
                methodId == ERC20_APPROVE ||
                methodId == ERC721_SET_APPROVAL_FOR_ALL) 
            {
                // solhint-disable-next-line no-inline-assembly
                assembly {
                    spender := mload(add(_data, 0x24))
                }
                return spender;
            }
            if(
                methodId == ERC721_TRANSFER_FROM ||
                methodId == ERC721_SAFE_TRANSFER_FROM ||
                methodId == ERC721_SAFE_TRANSFER_FROM_BYTES ||
                methodId == ERC1155_SAFE_TRANSFER_FROM)
            {
                // solhint-disable-next-line no-inline-assembly
                assembly {
                    spender := mload(add(_data, 0x44))
                }
                return spender;
            }
        }

        spender = _to;
    }

    /**
    * @notice Helper method to parse data and extract the method signature.
    */
    function functionPrefix(bytes memory _data) internal pure returns (bytes4 prefix) {
        require(_data.length >= 4, "Utils: Invalid functionPrefix");
        // solhint-disable-next-line no-inline-assembly
        assembly {
            prefix := mload(add(_data, 0x20))
        }
    }

    /**
    * @notice Checks if an address is a contract.
    * @param _addr The address.
    */
    function isContract(address _addr) internal view returns (bool) {
        uint32 size;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            size := extcodesize(_addr)
        }
        return (size > 0);
    }

    /**
    * @notice Checks if an address is a guardian or an account authorised to sign on behalf of a smart-contract guardian
    * given a list of guardians.
    * @param _guardians the list of guardians
    * @param _guardian the address to test
    * @return true and the list of guardians minus the found guardian upon success, false and the original list of guardians if not found.
    */
    function isGuardianOrGuardianSigner(address[] memory _guardians, address _guardian) internal view returns (bool, address[] memory) {
        if (_guardians.length == 0 || _guardian == address(0)) {
            return (false, _guardians);
        }
        bool isFound = false;
        address[] memory updatedGuardians = new address[](_guardians.length - 1);
        uint256 index = 0;
        for (uint256 i = 0; i < _guardians.length; i++) {
            if (!isFound) {
                // check if _guardian is an account guardian
                if (_guardian == _guardians[i]) {
                    isFound = true;
                    continue;
                }
                // check if _guardian is the owner of a smart contract guardian
                if (isContract(_guardians[i]) && isGuardianOwner(_guardians[i], _guardian)) {
                    isFound = true;
                    continue;
                }
            }
            if (index < updatedGuardians.length) {
                updatedGuardians[index] = _guardians[i];
                index++;
            }
        }
        return isFound ? (true, updatedGuardians) : (false, _guardians);
    }

    /**
    * @notice Checks if an address is the owner of a guardian contract.
    * The method does not revert if the call to the owner() method consumes more then 25000 gas.
    * @param _guardian The guardian contract
    * @param _owner The owner to verify.
    */
    function isGuardianOwner(address _guardian, address _owner) internal view returns (bool) {
        address owner = address(0);

        // solhint-disable-next-line no-inline-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr,OWNER_SIG)
            let result := staticcall(25000, _guardian, ptr, 0x20, ptr, 0x20)
            if eq(result, 1) {
                owner := mload(ptr)
            }
        }
        return owner == _owner;
    }

    /**
    * @notice Returns ceil(a / b).
    */
    function ceil(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a / b;
        if (a % b == 0) {
            return c;
        } else {
            return c + 1;
        }
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.18;

import "./common/Utils.sol";
import "./abstract/BaseModule.sol";
import "./abstract/RelayerManager.sol";
import "./abstract/SecurityManager.sol";
import "./abstract/EnterpriseTransactionManager.sol";
import "./abstract/SignatureModule.sol";


/**
 * @title EnterpriseModule
  * @notice Concrete module to manage wallet users and guardians, the difference between this module and the UsersModule 
 * is that in this module only the guardians can add and remove guardians.
 */

contract EnterpriseModule is SignatureModule, BaseModule, RelayerManager, SecurityManager, EnterpriseTransactionManager {

    bytes32 constant public NAME = "EnterpriseModule";

    constructor (
        IModuleRegistry _registry,
        IGuardianStorage _guardianStorage,
        ITransferStorage _userWhitelist,
        uint256 _securityPeriod,
        uint256 _securityWindow,
        uint256 _recoveryPeriod,
        uint256 _lockPeriod
    )
        BaseModule(_registry, _guardianStorage, _userWhitelist, NAME)
        SecurityManager(_recoveryPeriod, _securityPeriod, _securityWindow, _lockPeriod)
        EnterpriseTransactionManager(_securityPeriod)
        RelayerManager("RelayerKnobs")
    {
    }

    /**
     * @inheritdoc IModule
     */
    function init(address _wallet) external override onlyWallet(_wallet) {
        enableDefaultStaticCalls(_wallet); 
    }

    /**
    * @inheritdoc IModule
    */
    function addModule(address _wallet, address _module) external override onlyWalletOwnerOrSelf(_wallet) onlyWhenUnlocked(_wallet) {
        require(registry.isRegisteredModule(_module), "EM: module is not registered");
        IWallet(_wallet).authoriseModule(_module, true);
    }
    
    /**
     * @inheritdoc RelayerManager
     */
    function getRequiredSignatures(address _wallet, bytes calldata _data) public view override returns (uint256, OwnerSignature) {
        bytes4 methodId = Utils.functionPrefix(_data);

        if (methodId == EnterpriseTransactionManager.multiCall.selector ||
            methodId == EnterpriseTransactionManager.multiCallNoRevert.selector
        )
        {
            if(msg.sender == _wallet) {
                return (0, OwnerSignature.Anyone);
            }
            // owner
            return (1, OwnerSignature.Required);
        }
        if (methodId == SecurityManager.executeRecovery.selector) {
            // majority of guardians
            uint numberOfSignaturesRequired = _majorityOfGuardians(_wallet);
            require(numberOfSignaturesRequired > 0, "EM: no guardians set on wallet");
            return (numberOfSignaturesRequired, OwnerSignature.Disallowed);
        }
        if (methodId == SecurityManager.cancelRecovery.selector) {
            // majority of (owner + guardians)
            uint numberOfSignaturesRequired = Utils.ceil(recoveryConfigs[_wallet].guardianCount + 1, 2);
            if(msg.sender == _wallet) {
                return (numberOfSignaturesRequired - 1, OwnerSignature.Disallowed);      
            } 
            return (numberOfSignaturesRequired, OwnerSignature.Optional);
        }
        if (
            methodId == SecurityManager.addGuardian.selector ||
            methodId == SecurityManager.revokeGuardian.selector ||
            methodId == SecurityManager.cancelGuardianAddition.selector ||
            methodId == SecurityManager.cancelGuardianRevokation.selector ||
            methodId == SecurityManager.transferOwnership.selector ||
            methodId == EnterpriseModule.addModule.selector ||
            methodId == SecurityManager.upgradeWallet.selector
        )
        {
            // owner + majority of guardians
            uint majorityGuardians = _majorityOfGuardians(_wallet);
            // uint numberOfSignaturesRequired = majorityGuardians + 1;
            return (majorityGuardians, OwnerSignature.Disallowed);
        }
        if (methodId == SecurityManager.finalizeRecovery.selector ||
            methodId == SecurityManager.confirmGuardianAddition.selector ||
            methodId == SecurityManager.confirmGuardianRevokation.selector)
        {
            // anyone
            return (0, OwnerSignature.Anyone);
        }
        if (methodId == SecurityManager.lock.selector || methodId == SecurityManager.unlock.selector) {
            // any guardian
            return (1, OwnerSignature.Disallowed);
        }
        revert("EM: unknown method");
    }

    function _majorityOfGuardians(address _wallet) internal view returns (uint) {
        return Utils.ceil(guardianStorage.guardianCount(_wallet), 2);
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.18;

/**
 * @title IModule
 * @notice Interface for a Module.
 */
interface IModule {

    /**	
     * @notice Adds a module to a wallet. Cannot execute when wallet is locked (or under recovery)	
     * @param _wallet The target wallet.	
     * @param _module The modules to authorise.	
     */	
    function addModule(address _wallet, address _module) external;

    /**
     * @notice Inits a Module for a wallet by e.g. setting some wallet specific parameters in storage.
     * @param _wallet The wallet.
     */
    function init(address _wallet) external;


    /**
     * @notice Returns whether the module implements a callback for a given static call method.
     * @param _methodId The method id.
     */
    function supportsStaticCall(bytes4 _methodId) external view returns (bool _isSupported);


}

// SPDX-License-Identifier: AGPL-3.0-only-or-later

import "../../base/interfaces/UserOperation.sol";

pragma solidity ^0.8.18;

interface ISignatureModule {
     function isValidSignature(
        UserOperation calldata _userOp,
        bytes32 _userOpHash
    ) external view returns (uint256);

    function isSignatureModule() external pure returns (bool);
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.5.4 <0.9.0;

/**
 * @title IModuleRegistry
 * @notice Interface for the registry of authorised modules.
 */
interface IModuleRegistry {
    function registerModule(address _module, bytes32 _name) external;

    function deregisterModule(address _module) external;

    function registerUpgrader(address _upgrader, bytes32 _name) external;

    function deregisterUpgrader(address _upgrader) external;

    function recoverToken(address _token) external;

    function moduleInfo(address _module) external view returns (bytes32);

    function upgraderInfo(address _upgrader) external view returns (bytes32);

    function isRegisteredModule(address _module) external view returns (bool);

    function isRegisteredModule(address[] calldata _modules) external view returns (bool);

    function isRegisteredUpgrader(address _upgrader) external view returns (bool);
}

// Copyright (C) 2018  Argent Labs Ltd. <https://argent.xyz>

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.5.4 <0.9.0;

interface IGuardianStorage {

    /**
     * @notice Lets an authorised module add a guardian to a wallet.
     * @param _wallet The target wallet.
     * @param _guardian The guardian to add.
     */
    function addGuardian(address _wallet, address _guardian) external;

    /**
     * @notice Lets an authorised module revoke a guardian from a wallet.
     * @param _wallet The target wallet.
     * @param _guardian The guardian to revoke.
     */
    function revokeGuardian(address _wallet, address _guardian) external;

    /**
     * @notice Checks if an account is a guardian for a wallet.
     * @param _wallet The target wallet.
     * @param _guardian The account.
     * @return true if the account is a guardian for a wallet.
     */
    function isGuardian(address _wallet, address _guardian) external view returns (bool);

    function isLocked(address _wallet) external view returns (bool);

    function getLock(address _wallet) external view returns (uint256);

    function getLocker(address _wallet) external view returns (address);

    function setLock(address _wallet, uint256 _releaseAfter) external;

    function getGuardians(address _wallet) external view returns (address[] memory);

    function guardianCount(address _wallet) external view returns (uint256);
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.5.4 <0.9.0;

/**
 * @title ITransferStorage
 * @notice TransferStorage interface
 */
interface ITransferStorage {
    function setWhitelist(address _wallet, address _target, uint256 _value) external;

    function getWhitelist(address _wallet, address _target) external view returns (uint256);
}