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// SPDX-License-Identifier: MIT

pragma solidity >=0.8.0 <0.9.0;

import {UserOperation} from "@account-abstraction/contracts/interfaces/UserOperation.sol";
import {BaseAuthorizationModule} from "./BaseAuthorizationModule.sol";
import {CommonSignatureChecker} from "./CommonSignatureChecker.sol";

/**
 * @title MultiSigModule - EIP-4337 compatible multi sig module. Contract signatures are not covered.
 * @author Akash Mishra - <[email protected]>
 */

contract CommonMultiECDSA is BaseAuthorizationModule, CommonSignatureChecker {
    /**
     * @notice The EIP-712 type-hash for the domain separator used for verifying Safe operation signatures.
     */
    bytes32 private constant DOMAIN_SEPARATOR_TYPEHASH =
        keccak256("EIP712Domain(uint256 chainId,address verifyingContract)");

    /**
     * @notice The EIP-712 type-hash for a SafeOp, representing the structure of a User Operation for the Safe.
     *  {address} safe - The address of the safe on which the operation is performed.
     *  {uint256} nonce - A unique number associated with the user operation, preventing replay attacks by ensuring each operation is unique.
     *  {bytes} initCode - The packed encoding of a factory address and its factory-specific data for creating a new Safe account.
     *  {bytes} callData - The bytes representing the data of the function call to be executed.
     *  {uint256} callGasLimit - The maximum amount of gas allowed for executing the function call.
     *  {uint256} verificationGasLimit - The maximum amount of gas allowed for the verification process.
     *  {uint256} preVerificationGas - The amount of gas allocated for pre-verification steps before executing the main operation.
     *  {uint256} maxFeePerGas - The maximum fee per gas that the user is willing to pay for the transaction.
     *  {uint256} maxPriorityFeePerGas - The maximum priority fee per gas that the user is willing to pay for the transaction.
     *  {bytes} paymasterAndData - The packed encoding of a paymaster address and its paymaster-specific data for sponsoring the user operation.
     *  {uint48} validAfter - A timestamp representing from when the user operation is valid.
     *  {uint48} validUntil - A timestamp representing until when the user operation is valid, or 0 to indicated "forever".
     *  {address} entryPoint - The address of the entry point that will execute the user operation.
     * @dev When validating the user operation, the signature timestamps are pre-pended to the signature bytes.
     */
    bytes32 private constant SAFE_OP_TYPEHASH =
        keccak256(
            "SafeOp(address safe,uint256 nonce,bytes initCode,bytes callData,uint256 callGasLimit,uint256 verificationGasLimit,uint256 preVerificationGas,uint256 maxFeePerGas,uint256 maxPriorityFeePerGas,bytes paymasterAndData,uint48 validAfter,uint48 validUntil,address entryPoint)"
        );

    /**
     * @dev A structure used internally for manually encoding a Safe operation for when computing the EIP-712 struct hash.
     */
    struct EncodedSafeOpStruct {
        bytes32 typeHash;
        address safe;
        uint256 nonce;
        bytes32 initCodeHash;
        bytes32 callDataHash;
        uint256 callGasLimit;
        uint256 verificationGasLimit;
        uint256 preVerificationGas;
        uint256 maxFeePerGas;
        uint256 maxPriorityFeePerGas;
        bytes32 paymasterAndDataHash;
        uint48 validAfter;
        uint48 validUntil;
        address entryPoint;
    }

    address public immutable SUPPORTED_ENTRYPOINT;

    constructor(address entryPoint) {
        require(entryPoint != address(0), "Invalid entry point");
        SUPPORTED_ENTRYPOINT = entryPoint;
    }

    /**
     * @notice Validates a user operation provided by the entry point.
     */
    function validateUserOp(
        UserOperation calldata userOp,
        bytes32 userOpHash
    ) external view returns (uint256 validationData) {
        isSmartAccount(msg.sender);

        // The userOp nonce is validated in the entry point (for 0.6.0+), therefore we will not check it again
        // validationData = _validateSignatures(userOp);
        // if (_validateSignatures(userOp) == VALIDATION_SUCCESS) {
        //     return VALIDATION_SUCCESS;
        // }
        return _validateSignatures(userOp);
    }

    /**
     * @dev Validates a signature for a message signed by address.
     * @dev Also try dataHash.toEthSignedMessageHash()
     * @param operationDataHash hash of the data
     * @param operationDataPack abi.encode(operationData,validAfter, validUntil, signatures)
     * @return EIP1271_MAGIC_VALUE if signature is valid, 0xffffffff otherwise.
     */
    function isValidSignature(
        bytes32 operationDataHash,
        bytes memory operationDataPack
    ) public view virtual override returns (bytes4) {
        return
            isValidSignatureForAddress(operationDataHash, operationDataPack, msg.sender);
    }

    /**
     * @dev Validates a signature for a message signed by address.
     * @dev Also try dataHash.toEthSignedMessageHash()
     * @param operationDataHash hash of the data
     * @param operationDataPack abi.encode(operationData,validAfter, validUntil, signatures)
     * @param smartAccount expected signer Smart Account address.
     * @return EIP1271_MAGIC_VALUE if signature is valid, 0xffffffff otherwise.
     */
    function isValidSignatureForAddress(
        bytes32 operationDataHash,
        bytes memory operationDataPack,
        address smartAccount
    ) public view virtual returns (bytes4) {
        if (_validateSignatures(operationDataPack) == VALIDATION_SUCCESS) {
            return EIP1271_MAGIC_VALUE;
        }
        return bytes4(0xffffffff);
    }

    /**
     * @notice Computes the 32-byte domain separator used in EIP-712 signature verification for Safe operations.
     * @return The EIP-712 domain separator hash for this contract.
     */
    function domainSeparator() public view returns (bytes32) {
        return
            keccak256(
                abi.encode(DOMAIN_SEPARATOR_TYPEHASH, block.chainid, this)
            );
    }

    /**
     * @notice Returns the 32-byte Safe operation hash to be signed by owners for the specified ERC-4337 user operation.
     * @dev The Safe operation timestamps are pre-pended to the signature bytes as `abi.encodePacked(validAfter, validUntil, signatures)`.
     * @param userOp The ERC-4337 user operation.
     * @return operationHash Operation hash.
     */
    function getOperationHash(
        UserOperation calldata userOp
    ) external view returns (bytes32 operationHash) {
        (bytes memory operationData, , , ) = _getSafeOp(userOp);
        operationHash = keccak256(operationData);
    }

    /**
     * @dev Validates that the user operation is correctly signed and returns an ERC-4337 packed validation data
     * of `validAfter || validUntil || authorizer`:
     *  - `authorizer`: 20-byte address, 0 for valid signature or 1 to mark signature failure (this module does not make use of signature aggregators).
     *  - `validUntil`: 6-byte timestamp value, or zero for "infinite". The user operation is valid only up to this time.
     *  - `validAfter`: 6-byte timestamp. The user operation is valid only after this time.
     * @param userOp User operation struct.
     * @return validationData An integer indicating the result of the validation.
     */
    function _validateSignatures(
        UserOperation calldata userOp
    ) internal view returns (uint256 validationData) {
        
        (
            bytes memory operationData,
            uint48 validAfter,
            uint48 validUntil,
            bytes calldata signatures
        ) = _getSafeOp(userOp);
        bool success = checkSignatures(
            keccak256(operationData),
            operationData,
            signatures
        );
        // The timestamps are validated by the entry point, therefore we will not check them again
        if (success) validationData = _packValidationData(false, validUntil, validAfter);
        else validationData = _packValidationData(true, validUntil, validAfter);
    }

    /**
     * @dev Validates a signature for a message signed by address.
     * @dev Also try dataHash.toEthSignedMessageHash()
     * @param operationDataPack abi.encode(operationData,validAfter, validUntil, signatures)
     * @return validationData EIP1271_MAGIC_VALUE if signature is valid, 0xffffffff otherwise.
     */
    function _validateSignatures(
        bytes memory operationDataPack
    ) internal view returns (uint256 validationData)    {
        // (bytes memory operationData, uint48 validAfter, uint48 validUntil, bytes calldata signatures) = _getSafeOp(userOp);
        (
            bytes memory operationData,
            uint48 validAfter,
            uint48 validUntil,
            bytes memory signatures
        ) = abi.decode(operationDataPack, (bytes, uint48, uint48, bytes));
        bool success = checkSignatures(
            keccak256(operationData),
            operationData,
            signatures
        );
        // The timestamps are validated by the entry point, therefore we will not check them again
        // if (success)
        //     validationData = _packValidationData(false, validUntil, validAfter);
        // else validationData = _packValidationData(true, validUntil, validAfter);

        if (success) validationData = VALIDATION_SUCCESS;
        else validationData = SIG_VALIDATION_FAILED;
    }

    /**
     * @dev Decodes an ERC-4337 user operation into a Safe operation.
     * @param userOp The ERC-4337 user operation.
     * @return operationData Encoded EIP-712 Safe operation data bytes used for signature verification.
     * @return validAfter The timestamp the user operation is valid from.
     * @return validUntil The timestamp the user operation is valid until.
     * @return signatures The Safe owner signatures extracted from the user operation.
     */
    function _getSafeOp(
        UserOperation calldata userOp
    )
        internal
        view
        returns (
            bytes memory operationData,
            uint48 validAfter,
            uint48 validUntil,
            bytes calldata signatures
        )   
    {
        // Extract additional Safe operation fields from the user operation signature which is encoded as:
        // `abi.encodePacked(validAfter, validUntil, signatures)`
        {

            bytes calldata sig = userOp.signature;

            validAfter = uint48(bytes6(sig[0:6]));
            validUntil = uint48(bytes6(sig[6:12]));
            bytes calldata signaturesWithModule = sig[12:];
            signatures = signaturesWithModule[:signaturesWithModule.length-20];

        }

        // It is important that **all** user operation fields are represented in the `SafeOp` data somehow, to prevent
        // user operations from being submitted that do not fully respect the user preferences. The only exception is
        // the `signature` bytes. Note that even `initCode` needs to be represented in the operation data, otherwise
        // it can be replaced with a more expensive initialization that would charge the user additional fees.
        {
            // In order to work around Solidity "stack too deep" errors related to too many stack variables, manually
            // encode the `SafeOp` fields into a memory `struct` for computing the EIP-712 struct-hash. This works
            // because the `EncodedSafeOpStruct` struct has no "dynamic" fields so its memory layout is identical to the
            // result of `abi.encode`-ing the individual fields.
            EncodedSafeOpStruct memory encodedSafeOp = EncodedSafeOpStruct({
                typeHash: SAFE_OP_TYPEHASH,
                safe: userOp.sender,
                nonce: userOp.nonce,
                initCodeHash: keccak256(userOp.initCode),
                callDataHash: keccak256(userOp.callData),
                callGasLimit: userOp.callGasLimit,
                verificationGasLimit: userOp.verificationGasLimit,
                preVerificationGas: userOp.preVerificationGas,
                maxFeePerGas: userOp.maxFeePerGas,
                maxPriorityFeePerGas: userOp.maxPriorityFeePerGas,
                paymasterAndDataHash: keccak256(userOp.paymasterAndData),
                validAfter: validAfter,
                validUntil: validUntil,
                entryPoint: SUPPORTED_ENTRYPOINT
            });

            bytes32 safeOpStructHash;
            // solhint-disable-next-line no-inline-assembly
            assembly ("memory-safe") {
                // Since the `encodedSafeOp` value's memory layout is identical to the result of `abi.encode`-ing the
                // individual `SafeOp` fields, we can pass it directly to `keccak256`. Additionally, there are 14
                // 32-byte fields to hash, for a length of `14 * 32 = 448` bytes.
                safeOpStructHash := keccak256(encodedSafeOp, 448)
            }

            operationData = abi.encodePacked(
                bytes1(0x19),
                bytes1(0x01),
                domainSeparator(),
                safeOpStructHash
            );
        }
    }

    function _packValidationData(
        bool sigFailed,
        uint48 validUntil,
        uint48 validAfter
    ) internal pure returns (uint256) {
        return
            (sigFailed ? 1 : 0) |
            (uint256(validUntil) << 160) |
            (uint256(validAfter) << (160 + 48));
    }
}

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.12;

/* 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: GPL-3.0
pragma solidity ^0.8.12;

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

import {calldataKeccak} from "../core/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: MIT
pragma solidity >=0.8.0 <0.9.0;

/* solhint-disable no-empty-blocks */

import {IAuthorizationModule} from "./interfaces/IAuthorizationModule.sol";
import {ISignatureValidator} from "./interfaces/ISignatureValidator.sol";

contract AuthorizationModulesConstants {
    uint256 internal constant VALIDATION_SUCCESS = 0;
    uint256 internal constant SIG_VALIDATION_FAILED = 1;
}

abstract contract BaseAuthorizationModule is
    IAuthorizationModule,
    ISignatureValidator,
    AuthorizationModulesConstants
{}

// SPDX-License-Identifier: MIT
pragma solidity >=0.7.0 <0.9.0;

import "./MultiSig/CommonOwnerManager.sol";
import "./MultiSig/SignatureDecoder.sol";
import "./MultiSig/GnosisSafeMath.sol";


contract CommonSignatureChecker is CommonOwnerManager, SignatureDecoder
{
    using GnosisSafeMath for uint256;

    event SafeSetup(address indexed initiator, address[] owners, uint256 threshold);
    
    /// @dev Setup function sets initial storage of contract.
    /// @param _owners List of Safe owners.
    /// @param _threshold Number of required confirmations for a Safe transaction.
    function setup(
        address[] calldata _owners,
        uint256 _threshold
    ) external returns(address) {
        // setupOwners checks if the Threshold is already set, therefore preventing that this method is called twice
        setupOwners(_owners, _threshold);
        // As setupOwners can only be called if the contract has not been initialized we don't need a check for setupModules
        accountSupported[msg.sender] =true;
        emit SafeSetup(msg.sender, _owners, _threshold);
        return address(this);
    }

    function checkSignatures(
        bytes32 dataHash,
        bytes memory data,
        bytes memory signatures
    ) public view returns(bool) {
        // Load threshold to avoid multiple storage loads
        uint256 _threshold = smartAccountToOwners[msg.sender].threshold;
        // Check that a threshold is set
        require(_threshold > 0, "Threshold is zero");
        checkNSignatures(dataHash, data, signatures, _threshold);
        return true;
    }

    /**
     * @dev Checks whether the signature provided is valid for the provided data, hash. Will revert otherwise.
     * @param dataHash Hash of the data (could be either a message hash or transaction hash)
     * @param signatures Signature data that should be verified. Can be ECDSA signature, contract signature (EIP-1271) or approved hash.
     * @param requiredSignatures Amount of required valid signatures.
     */
    function checkNSignatures(
        bytes32 dataHash,bytes memory,
        bytes memory signatures,
        uint256 requiredSignatures
    ) public view {
        // Check that the provided signature data is not too short
        require(signatures.length >= requiredSignatures.mul(65), "Invalid inputs");
        // There cannot be an owner with address 0.
        address lastOwner = address(0);
        address currentOwner;
        uint8 v;
        bytes32 r;
        bytes32 s;
        uint256 i;
        for (i = 0; i < requiredSignatures; i++) {
            (v, r, s) = signatureSplit(signatures, i);
           if (v > 30) {
                // If v > 30 then default va (27,28) has been adjusted for eth_sign flow
                // To support eth_sign and similar we adjust v and hash the messageHash with the Ethereum message prefix before applying ecrecover
                currentOwner = ecrecover(keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", dataHash)), v - 4, r, s);
            } else {
                // Default is the ecrecover flow with the provided data hash
                // Use ecrecover with the messageHash for EOA signatures
                currentOwner = ecrecover(dataHash, v, r, s);
            }
            require(currentOwner > lastOwner && smartAccountToOwners[msg.sender].owners[currentOwner] != address(0) && currentOwner != SENTINEL_OWNERS, "Not a owner");
            lastOwner = currentOwner;
        }
    }
    
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.0 <0.9.0;
import {UserOperation} from "@account-abstraction/contracts/interfaces/UserOperation.sol";

// interface for modules to verify singatures signed over userOpHash
interface IAuthorizationModule {
    function validateUserOp(
        UserOperation calldata userOp,
        bytes32 userOpHash
    ) external returns (uint256 validationData);
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.8.0 <0.9.0;

contract ISignatureValidatorConstants {
    // bytes4(keccak256("isValidSignature(bytes32,bytes)")
    bytes4 internal constant EIP1271_MAGIC_VALUE = 0x1626ba7e;
}

abstract contract ISignatureValidator is ISignatureValidatorConstants {
    /**
     * @dev Should return whether the signature provided is valid for the provided data
     * @param _dataHash Arbitrary length data signed on behalf of address(this)
     * @param _signature Signature byte array associated with _data
     *
     * MUST return the bytes4 magic value 0x1626ba7e when function passes.
     * MUST NOT modify state (using STATICCALL for solc < 0.5, view modifier for solc > 0.5)
     * MUST allow external calls
     */
    function isValidSignature(
        bytes32 _dataHash,
        bytes memory _signature
    ) public view virtual returns (bytes4);
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;

/// @title OwnerManager - Manages a set of owners and a threshold to perform actions.

contract CommonOwnerManager {
    event AddedOwner(address owner);
    event RemovedOwner(address owner);
    event ChangedThreshold(uint256 threshold);
    event SmartAcountAdded(address _account);

    address internal constant SENTINEL_OWNERS = address(0x1);
    
    struct Details {
        mapping(address => address) owners;
        uint256 threshold;
        uint256 ownerCount;
    }

    // mapping(address => address) internal owners;
    mapping(address => bool) public accountSupported;

    mapping(address => Details) public smartAccountToOwners;    

    // uint256 internal ownerCount;
    // uint256 internal threshold;

    function isSmartAccount(address _account) internal view {
        require(accountSupported[_account], "Smart account not supported");
    }

    /// @dev Setup function sets initial storage of contract.
    /// @param _owners List of Safe owners.
    /// @param _threshold Number of required confirmations for a Safe transaction.
    function setupOwners(address[] memory _owners, uint256 _threshold) internal {
        // Threshold can only be 0 at initialization.
        // Check ensures that setup function can only be called once.
        require(smartAccountToOwners[msg.sender].threshold == 0, "Already initialized");
        // Validate that threshold is smaller than number of added owners.
        require(_threshold <= _owners.length, "Decrease threshold");
        // There has to be at least one Safe owner.
        require(_threshold >= 1, "Threshold should be one atleast");
        // Initializing Safe owners.
        address currentOwner = SENTINEL_OWNERS;
        for (uint256 i = 0; i < _owners.length; i++) {
            // Owner address cannot be null.
            address owner = _owners[i];
            require(owner != address(0) && owner != SENTINEL_OWNERS && owner != address(this) && currentOwner != owner, "Invalid owner");
            // No duplicate owners allowed.
            require(smartAccountToOwners[msg.sender].owners[owner] == address(0), "Owner already present");
            smartAccountToOwners[msg.sender].owners[currentOwner] = owner;
            currentOwner = owner;
        }
        smartAccountToOwners[msg.sender].owners[currentOwner] = SENTINEL_OWNERS;
        smartAccountToOwners[msg.sender].ownerCount = _owners.length;
        smartAccountToOwners[msg.sender].threshold = _threshold;
    }

    /// @dev Allows to add a new owner to the Safe and update the threshold at the same time.
    ///      This can only be done via a Safe transaction.
    /// @notice Adds the owner `owner` to the Safe and updates the threshold to `_threshold`.
    /// @param owner New owner address.
    /// @param _threshold New threshold.
    function addOwnerWithThreshold(address owner, uint256 _threshold) public {
        isSmartAccount(msg.sender);
        // Owner address cannot be null, the sentinel or the Safe itself.
        require(owner != address(0) && owner != SENTINEL_OWNERS && owner != address(this), "Invalid owner");
        // No duplicate owners allowed.
        require(smartAccountToOwners[msg.sender].owners[owner] == address(0), "Duplicate owner");
        smartAccountToOwners[msg.sender].owners[owner] = smartAccountToOwners[msg.sender].owners[SENTINEL_OWNERS];
        smartAccountToOwners[msg.sender].owners[SENTINEL_OWNERS] = owner;
        smartAccountToOwners[msg.sender].ownerCount++;
        emit AddedOwner(owner);
        // Change threshold if threshold was changed.
        if (smartAccountToOwners[msg.sender].threshold != _threshold) changeThreshold(_threshold);
    }

    /// @dev Allows to remove an owner from the Safe and update the threshold at the same time.
    ///      This can only be done via a Safe transaction.
    /// @notice Removes the owner `owner` from the Safe and updates the threshold to `_threshold`.
    /// @param prevOwner Owner that pointed to the owner to be removed in the linked list
    /// @param owner Owner address to be removed.
    /// @param _threshold New threshold.
    function removeOwner(
        address prevOwner,
        address owner,
        uint256 _threshold
    ) public {
        isSmartAccount(msg.sender);
        // Only allow to remove an owner, if threshold can still be reached.
        require(smartAccountToOwners[msg.sender].ownerCount - 1 >= _threshold, "Violating owner");
        // Validate owner address and check that it corresponds to owner index.
        require(owner != address(0) && owner != SENTINEL_OWNERS, "Owner invalid");
        require(smartAccountToOwners[msg.sender].owners[prevOwner] == owner, "Invalid previous owner");
        smartAccountToOwners[msg.sender].owners[prevOwner] = smartAccountToOwners[msg.sender].owners[owner];
        smartAccountToOwners[msg.sender].owners[owner] = address(0);
        smartAccountToOwners[msg.sender].ownerCount--;
        emit RemovedOwner(owner);
        // Change threshold if threshold was changed.
        if (smartAccountToOwners[msg.sender].threshold != _threshold) changeThreshold(_threshold);
    }

    /// @dev Allows to swap/replace an owner from the Safe with another address.
    ///      This can only be done via a Safe transaction.
    /// @notice Replaces the owner `oldOwner` in the Safe with `newOwner`.
    /// @param prevOwner Owner that pointed to the owner to be replaced in the linked list
    /// @param oldOwner Owner address to be replaced.
    /// @param newOwner New owner address.
    function swapOwner(
        address prevOwner,
        address oldOwner,
        address newOwner
    ) public {
        isSmartAccount(msg.sender);
        // Owner address cannot be null, the sentinel or the Safe itself.
        require(newOwner != address(0) && newOwner != SENTINEL_OWNERS && newOwner != address(this), "Invalid address");
        // No duplicate owners allowed.
        require(smartAccountToOwners[msg.sender].owners[newOwner] == address(0), "Already a owner");
        // Validate oldOwner address and check that it corresponds to owner index.
        require(oldOwner != address(0) && oldOwner != SENTINEL_OWNERS, "Invalid address");
        require(smartAccountToOwners[msg.sender].owners[prevOwner] == oldOwner, "Invalid pointer address");
        smartAccountToOwners[msg.sender].owners[newOwner] = smartAccountToOwners[msg.sender].owners[oldOwner];
        smartAccountToOwners[msg.sender].owners[prevOwner] = newOwner;
        smartAccountToOwners[msg.sender].owners[oldOwner] = address(0);
        emit RemovedOwner(oldOwner);
        emit AddedOwner(newOwner);
    }

    /// @dev Allows to update the number of required confirmations by Safe owners.
    ///      This can only be done via a Safe transaction.
    /// @notice Changes the threshold of the Safe to `_threshold`.
    /// @param _threshold New threshold.
    function changeThreshold(uint256 _threshold) public {
        isSmartAccount(msg.sender);
        // Validate that threshold is smaller than number of owners.
        require(_threshold <= smartAccountToOwners[msg.sender].ownerCount, "Threshold should be less than owners count");
        // There has to be at least one Safe owner.
        require(_threshold >= 1, "Threshold should be atleast one");
        smartAccountToOwners[msg.sender].threshold = _threshold;
        emit ChangedThreshold(smartAccountToOwners[msg.sender].threshold);
    }

    function getThreshold(address _account) public view returns (uint256) {
        return smartAccountToOwners[_account].threshold;
    }

    function isOwner(address _account, address owner) public view returns (bool) {
        return owner != SENTINEL_OWNERS && smartAccountToOwners[_account].owners[owner] != address(0);
    }

    /// @dev Returns array of owners.
    /// @return Array of Safe owners.
    function getOwners(address _account) public view returns (address[] memory) {
        address[] memory array = new address[](smartAccountToOwners[_account].ownerCount);

        // populate return array
        uint256 index = 0;
        address currentOwner = smartAccountToOwners[_account].owners[SENTINEL_OWNERS];
        while (currentOwner != SENTINEL_OWNERS) {
            array[index] = currentOwner;
            currentOwner = smartAccountToOwners[_account].owners[currentOwner];
            index++;
        }
        return array;
    }

    function addAccount(address _account) public {
        isSmartAccount(msg.sender);
        require(_account != address(0), "Zero address");
        require(_account.code.length > 0, "Not a contract");
        accountSupported[_account] = true;

        emit SmartAcountAdded(_account);
    }

}

// SPDX-License-Identifier: MIT
pragma solidity >=0.7.0 <0.9.0;

/**
 * @title GnosisSafeMath
 * @dev Math operations with safety checks that revert on error
 * Renamed from SafeMath to GnosisSafeMath to avoid conflicts
 * TODO: remove once open zeppelin update to solc 0.5.0
 */
library GnosisSafeMath {
    /**
     * @dev Multiplies two numbers, reverts on overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b);

        return c;
    }

    /**
     * @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Adds two numbers, reverts on overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a);

        return c;
    }

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

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;

/// @title SignatureDecoder - Decodes signatures that a encoded as bytes
contract SignatureDecoder {
    /// @dev divides bytes signature into `uint8 v, bytes32 r, bytes32 s`.
    /// @notice Make sure to peform a bounds check for @param pos, to avoid out of bounds access on @param signatures
    /// @param pos which signature to read. A prior bounds check of this parameter should be performed, to avoid out of bounds access
    /// @param signatures concatenated rsv signatures
    function signatureSplit(bytes memory signatures, uint256 pos)
        internal
        pure
        returns (
            uint8 v,
            bytes32 r,
            bytes32 s
        )
    {
        // The signature format is a compact form of:
        //   {bytes32 r}{bytes32 s}{uint8 v}
        // Compact means, uint8 is not padded to 32 bytes.
        // solhint-disable-next-line no-inline-assembly
        assembly {
            let signaturePos := mul(0x41, pos)
            r := mload(add(signatures, add(signaturePos, 0x20)))
            s := mload(add(signatures, add(signaturePos, 0x40)))
            // Here we are loading the last 32 bytes, including 31 bytes
            // of 's'. There is no 'mload8' to do this.
            //
            // 'byte' is not working due to the Solidity parser, so lets
            // use the second best option, 'and'
            v := and(mload(add(signatures, add(signaturePos, 0x41))), 0xff)
        }
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 10000000
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

[{"inputs":[{"internalType":"address","name":"entryPoint","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"owner","type":"address"}],"name":"AddedOwner","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"threshold","type":"uint256"}],"name":"ChangedThreshold","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"owner","type":"address"}],"name":"RemovedOwner","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"initiator","type":"address"},{"indexed":false,"internalType":"address[]","name":"owners","type":"address[]"},{"indexed":false,"internalType":"uint256","name":"threshold","type":"uint256"}],"name":"SafeSetup","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"_account","type":"address"}],"name":"SmartAcountAdded","type":"event"},{"inputs":[],"name":"SUPPORTED_ENTRYPOINT","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"accountSupported","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_account","type":"address"}],"name":"addAccount","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"_threshold","type":"uint256"}],"name":"addOwnerWithThreshold","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_threshold","type":"uint256"}],"name":"changeThreshold","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"dataHash","type":"bytes32"},{"internalType":"bytes","name":"","type":"bytes"},{"internalType":"bytes","name":"signatures","type":"bytes"},{"internalType":"uint256","name":"requiredSignatures","type":"uint256"}],"name":"checkNSignatures","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"dataHash","type":"bytes32"},{"internalType":"bytes","name":"data","type":"bytes"},{"internalType":"bytes","name":"signatures","type":"bytes"}],"name":"checkSignatures","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"domainSeparator","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"bytes","name":"initCode","type":"bytes"},{"internalType":"bytes","name":"callData","type":"bytes"},{"internalType":"uint256","name":"callGasLimit","type":"uint256"},{"internalType":"uint256","name":"verificationGasLimit","type":"uint256"},{"internalType":"uint256","name":"preVerificationGas","type":"uint256"},{"internalType":"uint256","name":"maxFeePerGas","type":"uint256"},{"internalType":"uint256","name":"maxPriorityFeePerGas","type":"uint256"},{"internalType":"bytes","name":"paymasterAndData","type":"bytes"},{"internalType":"bytes","name":"signature","type":"bytes"}],"internalType":"struct UserOperation","name":"userOp","type":"tuple"}],"name":"getOperationHash","outputs":[{"internalType":"bytes32","name":"operationHash","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_account","type":"address"}],"name":"getOwners","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_account","type":"address"}],"name":"getThreshold","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_account","type":"address"},{"internalType":"address","name":"owner","type":"address"}],"name":"isOwner","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"operationDataHash","type":"bytes32"},{"internalType":"bytes","name":"operationDataPack","type":"bytes"}],"name":"isValidSignature","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"operationDataHash","type":"bytes32"},{"internalType":"bytes","name":"operationDataPack","type":"bytes"},{"internalType":"address","name":"smartAccount","type":"address"}],"name":"isValidSignatureForAddress","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"prevOwner","type":"address"},{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"_threshold","type":"uint256"}],"name":"removeOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_owners","type":"address[]"},{"internalType":"uint256","name":"_threshold","type":"uint256"}],"name":"setup","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"smartAccountToOwners","outputs":[{"internalType":"uint256","name":"threshold","type":"uint256"},{"internalType":"uint256","name":"ownerCount","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"prevOwner","type":"address"},{"internalType":"address","name":"oldOwner","type":"address"},{"internalType":"address","name":"newOwner","type":"address"}],"name":"swapOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"bytes","name":"initCode","type":"bytes"},{"internalType":"bytes","name":"callData","type":"bytes"},{"internalType":"uint256","name":"callGasLimit","type":"uint256"},{"internalType":"uint256","name":"verificationGasLimit","type":"uint256"},{"internalType":"uint256","name":"preVerificationGas","type":"uint256"},{"internalType":"uint256","name":"maxFeePerGas","type":"uint256"},{"internalType":"uint256","name":"maxPriorityFeePerGas","type":"uint256"},{"internalType":"bytes","name":"paymasterAndData","type":"bytes"},{"internalType":"bytes","name":"signature","type":"bytes"}],"internalType":"struct UserOperation","name":"userOp","type":"tuple"},{"internalType":"bytes32","name":"userOpHash","type":"bytes32"}],"name":"validateUserOp","outputs":[{"internalType":"uint256","name":"validationData","type":"uint256"}],"stateMutability":"view","type":"function"}]

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0000000000000000000000005ff137d4b0fdcd49dca30c7cf57e578a026d2789

-----Decoded View---------------
Arg [0] : entryPoint (address): 0x5FF137D4b0FDCD49DcA30c7CF57E578a026d2789

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000005ff137d4b0fdcd49dca30c7cf57e578a026d2789