Utilities and Advanced Features

def intread(buf: bytes) -> int:
    """
    Read integer from buffer using MySQL protocol format.
    
    Args:
        buf: Bytes buffer containing integer
        
    Returns:
        Integer value read from buffer
    """
    pass

def int1store(value: int) -> bytes:
    """
    Pack integer into 1-byte buffer.
    
    Args:
        value: Integer value (0-255)
        
    Returns:
        1-byte buffer containing packed integer
    """
    pass

def int2store(value: int) -> bytes:
    """
    Pack integer into 2-byte buffer (little-endian).
    
    Args:
        value: Integer value (0-65535)
        
    Returns:
        2-byte buffer containing packed integer
    """
    pass

def int3store(value: int) -> bytes:
    """
    Pack integer into 3-byte buffer (little-endian).
    
    Args:
        value: Integer value (0-16777215)
        
    Returns:
        3-byte buffer containing packed integer
    """
    pass

def int4store(value: int) -> bytes:
    """
    Pack integer into 4-byte buffer (little-endian).
    
    Args:
        value: Integer value (0-4294967295)
        
    Returns:
        4-byte buffer containing packed integer
    """
    pass

def int8store(value: int) -> bytes:
    """
    Pack integer into 8-byte buffer (little-endian).
    
    Args:
        value: Integer value (0-18446744073709551615)
        
    Returns:
        8-byte buffer containing packed integer
    """
    pass

def intstore(value: int) -> bytes:
    """
    Pack integer into variable-length buffer.
    
    Args:
        value: Integer value
        
    Returns:
        Variable-length buffer containing packed integer
    """
    pass

def lc_int(value: int) -> bytes:
    """
    Pack integer using length-coded format.
    
    Args:
        value: Integer value
        
    Returns:
        Length-coded buffer containing integer
    """
    pass

def read_bytes(buf: bytes, size: int) -> Tuple[bytes, int]:
    """
    Read specified number of bytes from buffer.
    
    Args:
        buf: Source buffer
        size: Number of bytes to read
        
    Returns:
        Tuple of (read_bytes, new_position)
    """
    pass

def read_lc_string(buf: bytes) -> Tuple[bytes, int]:
    """
    Read length-coded string from buffer.
    
    Args:
        buf: Buffer containing length-coded string
        
    Returns:
        Tuple of (string_bytes, new_position)
    """
    pass

def read_string(buf: bytes, end: bytes, charset: str = 'utf8') -> str:
    """
    Read string from buffer until end marker.
    
    Args:
        buf: Buffer containing string data
        end: End marker bytes
        charset: Character encoding (default: 'utf8')
        
    Returns:
        Decoded string
    """
    pass

def read_int(buf: bytes, size: int) -> Tuple[int, int]:
    """
    Read integer from buffer.
    
    Args:
        buf: Buffer containing integer data
        size: Size of integer in bytes (1, 2, 3, 4, or 8)
        
    Returns:
        Tuple of (integer_value, new_position)
    """
    pass

def read_lc_int(buf: bytes) -> Tuple[int, int]:
    """
    Read length-coded integer from buffer.
    
    Args:
        buf: Buffer containing length-coded integer
        
    Returns:
        Tuple of (integer_value, new_position)
    """
    pass

def get_platform() -> str:
    """
    Get platform information string.
    
    Returns:
        Platform identifier string (e.g., 'Linux-x86_64', 'Windows-AMD64')
    """
    pass

def linux_distribution() -> Tuple[str, str, str]:
    """
    Get Linux distribution information.
    
    Returns:
        Tuple of (distribution_name, version, codename)
        Returns empty tuple on non-Linux platforms
    """
    pass

def import_object(fullpath: str) -> Any:
    """
    Import object from module path.
    
    Args:
        fullpath: Full module path (e.g., 'package.module.ClassName')
        
    Returns:
        Imported object (class, function, etc.)
        
    Raises:
        ImportError: If module or object cannot be imported
    """
    pass

def normalize_unicode_string(string: str) -> str:
    """
    Normalize Unicode string for security and consistency.
    
    Args:
        string: Input Unicode string
        
    Returns:
        Normalized Unicode string
    """
    pass

def validate_normalized_unicode_string(string: str) -> bool:
    """
    Validate that Unicode string is properly normalized.
    
    Args:
        string: Unicode string to validate
        
    Returns:
        True if string is normalized, False otherwise
    """
    pass

class MySQLOptionsParser:
    """
    MySQL option file parser for my.cnf files.
    Handles MySQL configuration file parsing and option extraction.
    """
    
    def __init__(self) -> None:
        """Initialize option file parser."""
        pass
    
    def read_option_files(self, files: List[str]) -> Dict[str, Dict[str, str]]:
        """
        Read MySQL option files and extract configuration.
        
        Args:
            files: List of option file paths to read
            
        Returns:
            Dictionary with sections and their options
        """
        pass
    
    def read_groups(self, groups: List[str]) -> Dict[str, str]:
        """
        Read specific option groups from files.
        
        Args:
            groups: List of option group names to read
            
        Returns:
            Dictionary with merged options from specified groups
        """
        pass
    
    def get_groups(self) -> List[str]:
        """
        Get list of available option groups.
        
        Returns:
            List of option group names found in files
        """
        pass

def read_option_files(files: List[str]) -> Dict[str, Dict[str, str]]:
    """
    Convenience function to read MySQL option files.
    
    Args:
        files: List of option file paths
        
    Returns:
        Dictionary with parsed options organized by section
    """
    pass

class MySQLSocket:
    """
    Base socket class for MySQL connections.
    Provides common socket functionality for different connection types.
    """
    
    def __init__(self) -> None:
        """Initialize base socket."""
        pass
    
    def open_connection(self) -> None:
        """Open socket connection."""
        pass
    
    def close_connection(self) -> None:
        """Close socket connection."""
        pass
    
    def send(self, data: bytes) -> int:
        """Send data through socket."""
        pass
    
    def recv(self, size: int) -> bytes:
        """Receive data from socket."""
        pass
    
    def set_connection_timeout(self, timeout: int) -> None:
        """Set connection timeout in seconds."""
        pass

class MySQLTCPSocket(MySQLSocket):
    """
    TCP socket implementation for MySQL connections.
    Handles TCP/IP connections to MySQL server.
    """
    
    def __init__(self, host: str = 'localhost', port: int = 3306) -> None:
        """
        Initialize TCP socket.
        
        Args:
            host: MySQL server hostname
            port: MySQL server port number
        """
        pass

class MySQLUnixSocket(MySQLSocket):
    """
    Unix socket implementation for MySQL connections.
    Handles Unix domain socket connections to local MySQL server.
    """
    
    def __init__(self, unix_socket: str) -> None:
        """
        Initialize Unix socket.
        
        Args:
            unix_socket: Path to MySQL Unix socket file
        """
        pass

class MySQLLogger:
    """
    MySQL Connector logging utilities.
    Provides structured logging for MySQL operations.
    """
    
    def __init__(self, name: str = 'mysql.connector') -> None:
        """
        Initialize MySQL logger.
        
        Args:
            name: Logger name
        """
        pass
    
    def log_connection(self, host: str, user: str, database: str) -> None:
        """Log connection attempt."""
        pass
    
    def log_query(self, query: str, params: Optional[Tuple] = None) -> None:
        """Log SQL query execution."""
        pass
    
    def log_error(self, error: Exception, context: str = '') -> None:
        """Log error with context."""
        pass

class MySQLProtocol:
    """
    MySQL client/server protocol implementation.
    Handles low-level MySQL protocol communication.
    """
    
    def __init__(self) -> None:
        """Initialize protocol handler."""
        pass
    
    def parse_handshake(self, packet: bytes) -> Dict[str, Any]:
        """
        Parse MySQL handshake packet.
        
        Args:
            packet: Handshake packet bytes
            
        Returns:
            Dictionary with handshake information
        """
        pass
    
    def make_auth_response(self, handshake: Dict[str, Any], user: str, password: str, database: str) -> bytes:
        """
        Create authentication response packet.
        
        Args:
            handshake: Handshake information
            user: Username
            password: Password
            database: Database name
            
        Returns:
            Authentication response packet bytes
        """
        pass
    
    def parse_ok_packet(self, packet: bytes) -> Dict[str, Any]:
        """
        Parse MySQL OK packet.
        
        Args:
            packet: OK packet bytes
            
        Returns:
            Dictionary with OK packet information
        """
        pass
    
    def parse_error_packet(self, packet: bytes) -> Dict[str, Any]:
        """
        Parse MySQL error packet.
        
        Args:
            packet: Error packet bytes
            
        Returns:
            Dictionary with error information
        """
        pass
    
    def parse_result_set_header(self, packet: bytes) -> int:
        """
        Parse result set header packet.
        
        Args:
            packet: Result set header packet bytes
            
        Returns:
            Number of columns in result set
        """
        pass
    
    def parse_column_definition(self, packet: bytes) -> Dict[str, Any]:
        """
        Parse column definition packet.
        
        Args:
            packet: Column definition packet bytes
            
        Returns:
            Dictionary with column information
        """
        pass
    
    def parse_row_data(self, packet: bytes, columns: int) -> List[bytes]:
        """
        Parse row data packet.
        
        Args:
            packet: Row data packet bytes
            columns: Number of columns
            
        Returns:
            List of column values as bytes
        """
        pass

from mysql.connector.utils import int1store, int2store, int4store, intread

# Pack integers for protocol communication
one_byte = int1store(255)        # b'\xff'
two_bytes = int2store(65535)     # b'\xff\xff' (little-endian)
four_bytes = int4store(4294967295)  # b'\xff\xff\xff\xff'

print(f"1-byte: {one_byte.hex()}")
print(f"2-byte: {two_bytes.hex()}")
print(f"4-byte: {four_bytes.hex()}")

# Read integer from buffer
buffer = b'\x42\x00\x00\x00'  # 66 in little-endian 4-byte format
value = intread(buffer)
print(f"Read value: {value}")

from mysql.connector.utils import read_lc_string, read_string

# Example MySQL protocol buffer with length-coded string
# Format: [length][string_data]
buffer = b'\x0bHello World'  # Length 11, followed by "Hello World"

string_data, new_pos = read_lc_string(buffer)
print(f"Read string: {string_data.decode('utf-8')}")
print(f"New position: {new_pos}")

# Read null-terminated string
null_term_buffer = b'Hello World\x00more data'
string_value = read_string(null_term_buffer, b'\x00', 'utf-8')
print(f"Null-terminated string: {string_value}")

from mysql.connector.utils import get_platform, linux_distribution

# Get platform information
platform = get_platform()
print(f"Platform: {platform}")

# Get Linux distribution info (if on Linux)
try:
    dist_info = linux_distribution()
    if dist_info:
        name, version, codename = dist_info
        print(f"Linux Distribution: {name} {version} ({codename})")
except:
    print("Not running on Linux or distribution info unavailable")

from mysql.connector.utils import import_object

# Import specific class or function
try:
    MySQLConnection = import_object('mysql.connector.connection.MySQLConnection')
    print(f"Imported class: {MySQLConnection}")
    
    # Import authentication plugin
    sha2_plugin = import_object('mysql.connector.plugins.caching_sha2_password')
    print(f"Imported plugin: {sha2_plugin}")
    
except ImportError as err:
    print(f"Import failed: {err}")

from mysql.connector.optionfiles import MySQLOptionsParser, read_option_files

# Read MySQL configuration files
option_files = [
    '/etc/mysql/my.cnf',
    '/etc/my.cnf',
    '~/.my.cnf'
]

try:
    # Using parser class
    parser = MySQLOptionsParser()
    options = parser.read_option_files([f for f in option_files if os.path.exists(f)])
    
    print("MySQL Configuration:")
    for section, section_options in options.items():
        print(f"[{section}]")
        for key, value in section_options.items():
            print(f"  {key} = {value}")
        print()
    
    # Read specific groups
    client_options = parser.read_groups(['client', 'mysql_connector_python'])
    print(f"Client options: {client_options}")
    
except Exception as err:
    print(f"Failed to read option files: {err}")

from mysql.connector.utils import normalize_unicode_string, validate_normalized_unicode_string

# Unicode normalization for security
user_input = "café"  # May contain different Unicode representations
normalized = normalize_unicode_string(user_input)

print(f"Original: {user_input}")
print(f"Normalized: {normalized}")
print(f"Is normalized: {validate_normalized_unicode_string(normalized)}")

# Validate user input before database operations
def safe_insert_user(name: str, email: str):
    """Safely insert user with Unicode normalization."""
    if not validate_normalized_unicode_string(name):
        name = normalize_unicode_string(name)
    
    if not validate_normalized_unicode_string(email):
        email = normalize_unicode_string(email)
    
    # Proceed with database insert
    print(f"Inserting user: {name}, {email}")

safe_insert_user("José", "josé@example.com")

import mysql.connector
from mysql.connector.network import MySQLTCPSocket

# Custom socket configuration
class CustomMySQLSocket(MySQLTCPSocket):
    """Custom socket with additional logging."""
    
    def send(self, data: bytes) -> int:
        print(f"Sending {len(data)} bytes")
        return super().send(data)
    
    def recv(self, size: int) -> bytes:
        data = super().recv(size)
        print(f"Received {len(data)} bytes")
        return data

# Use custom socket (conceptual - actual integration may vary)
# This demonstrates how you might extend socket functionality

from mysql.connector.protocol import MySQLProtocol

# Analyze MySQL protocol packets (conceptual example)
protocol = MySQLProtocol()

# Example handshake packet (would come from actual MySQL server)
handshake_packet = b'\x0a8.0.32\x00...'  # Truncated for example

try:
    handshake_info = protocol.parse_handshake(handshake_packet)
    print(f"Server version: {handshake_info.get('server_version')}")
    print(f"Thread ID: {handshake_info.get('thread_id')}")
    print(f"Server capabilities: {handshake_info.get('server_capabilities')}")
except Exception as err:
    print(f"Failed to parse handshake: {err}")

import mysql.connector
from mysql.connector.utils import get_platform
import logging

# Configure detailed debugging
logging.basicConfig(level=logging.DEBUG)
logger = logging.getLogger('mysql.connector')

def debug_connection(config: dict):
    """Create connection with detailed debugging information."""
    
    print(f"Platform: {get_platform()}")
    print(f"MySQL Connector version: {mysql.connector.__version__}")
    
    try:
        connection = mysql.connector.connect(**config)
        
        # Connection details
        print(f"Connected to: {connection.server_host}:{connection.server_port}")
        print(f"Server version: {connection.server_version}")
        print(f"Connection ID: {connection.connection_id}")
        print(f"Character set: {connection.charset}")
        print(f"Collation: {connection.collation}")
        print(f"SQL mode: {connection.sql_mode}")
        print(f"Autocommit: {connection.autocommit}")
        print(f"In transaction: {connection.in_transaction}")
        
        # Server status
        cursor = connection.cursor()
        cursor.execute("SHOW STATUS LIKE 'Threads_connected'")
        result = cursor.fetchone()
        print(f"Server threads connected: {result[1]}")
        
        # SSL information if enabled
        cursor.execute("SHOW STATUS LIKE 'Ssl_cipher'")
        result = cursor.fetchone()  
        if result and result[1]:
            print(f"SSL cipher: {result[1]}")
        
        cursor.close()
        connection.close()
        
    except mysql.connector.Error as err:
        print(f"Connection debug failed: {err}")
        logger.error(f"Connection error details: {err}")

# Debug connection
config = {
    'host': 'localhost',
    'user': 'myuser',
    'password': 'mypassword',
    'database': 'mydatabase'
}

debug_connection(config)

import time
import mysql.connector
from mysql.connector.utils import get_platform

def benchmark_connection_methods():
    """Compare performance of different connection methods."""
    
    config = {
        'host': 'localhost',
        'user': 'myuser',
        'password': 'mypassword',
        'database': 'mydatabase'
    }
    
    methods = [
        ('Pure Python', {'use_pure': True}),
        ('C Extension', {'use_pure': False}),
        ('Compressed', {'compress': True, 'use_pure': False}),
        ('Buffered', {'buffered': True, 'use_pure': False})
    ]
    
    for method_name, method_config in methods:
        test_config = {**config, **method_config}
        
        try:
            start_time = time.time()
            
            connection = mysql.connector.connect(**test_config)
            cursor = connection.cursor()
            
            # Perform test operations
            for i in range(100):
                cursor.execute("SELECT %s", (i,))
                cursor.fetchone()
            
            cursor.close()
            connection.close()
            
            end_time = time.time()
            duration = end_time - start_time
            
            print(f"{method_name}: {duration:.3f} seconds")
            
        except mysql.connector.Error as err:
            print(f"{method_name}: Failed - {err}")

print(f"Running benchmarks on {get_platform()}")
benchmark_connection_methods()