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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙ# Copyright (c) 2023, 2026, Oracle and/or its affiliates. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License, version 2.0, as # published by the Free Software Foundation. # # This program is designed to work with certain software (including # but not limited to OpenSSL) that is licensed under separate terms, # as designated in a particular file or component or in included license # documentation. The authors of MySQL hereby grant you an # additional permission to link the program and your derivative works # with the separately licensed software that they have either included with # the program or referenced in the documentation. # # Without limiting anything contained in the foregoing, this file, # which is part of MySQL Connector/Python, is also subject to the # Universal FOSS Exception, version 1.0, a copy of which can be found at # http://oss.oracle.com/licenses/universal-foss-exception. # # 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, version 2.0, for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software Foundation, Inc., # 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA """Implements the MySQL Client/Server protocol.""" __all__ = ["MySQLProtocol"] import struct from typing import Any, Dict, List, Optional, Tuple from ..constants import ClientFlag, ServerCmd from ..errors import InterfaceError, ProgrammingError, get_exception from ..logger import logger from ..protocol import ( DEFAULT_CHARSET_ID, DEFAULT_MAX_ALLOWED_PACKET, MySQLProtocol as _MySQLProtocol, ) from ..types import BinaryProtocolType, DescriptionType, EofPacketType, HandShakeType from ..utils import lc_int, read_lc_string_list from .network import MySQLSocket from .plugins import MySQLAuthPlugin, get_auth_plugin from .plugins.caching_sha2_password import MySQLCachingSHA2PasswordAuthPlugin class MySQLProtocol(_MySQLProtocol): """Implements MySQL client/server protocol. Create and parses MySQL packets. """ @staticmethod def auth_plugin_first_response( # type: ignore[override] auth_data: bytes, username: str, password: str, auth_plugin: str, auth_plugin_class: Optional[str] = None, ssl_enabled: bool = False, plugin_config: Optional[Dict[str, Any]] = None, ) -> Tuple[bytes, MySQLAuthPlugin]: """Prepare the first authentication response. Args: auth_data: Authorization data from initial handshake. username: Account's username. password: Account's password. client_flags: Integer representing client capabilities flags. auth_plugin: Authorization plugin name. auth_plugin_class: Authorization plugin class (has higher precedence than the authorization plugin name). ssl_enabled: Whether SSL is enabled or not. plugin_config: Custom configuration to be passed to the auth plugin when invoked. The parameters defined here will override the ones defined in the auth plugin itself. Returns: auth_response: Authorization plugin response. auth_strategy: Authorization plugin instance created based on the provided `auth_plugin` and `auth_plugin_class` parameters. Raises: InterfaceError: If authentication fails or when got a NULL auth response. """ if not password and auth_plugin == "": # return auth response and an arbitrary auth strategy return b"\x00", MySQLCachingSHA2PasswordAuthPlugin( username, password, ssl_enabled=ssl_enabled ) if plugin_config is None: plugin_config = {} try: auth_strategy = get_auth_plugin(auth_plugin, auth_plugin_class)( username, password, ssl_enabled=ssl_enabled ) auth_response = auth_strategy.auth_response(auth_data, **plugin_config) except (TypeError, InterfaceError) as err: raise InterfaceError(f"Failed authentication: {err}") from err if auth_response is None: raise InterfaceError( "Got NULL auth response while authenticating with " f"plugin {auth_strategy.name}" ) auth_response = lc_int(len(auth_response)) + auth_response return auth_response, auth_strategy @staticmethod def make_auth( # type: ignore[override] handshake: HandShakeType, username: str, password: str, database: Optional[str] = None, charset: int = DEFAULT_CHARSET_ID, client_flags: int = 0, max_allowed_packet: int = DEFAULT_MAX_ALLOWED_PACKET, auth_plugin: Optional[str] = None, auth_plugin_class: Optional[str] = None, conn_attrs: Optional[Dict[str, str]] = None, is_change_user_request: bool = False, ssl_enabled: bool = False, plugin_config: Optional[Dict[str, Any]] = None, ) -> Tuple[bytes, MySQLAuthPlugin]: """Make a MySQL Authentication packet. Args: handshake: Initial handshake. username: Account's username. password: Account's password. database: Initial database name for the connection charset: Client charset (see [2]), only the lower 8-bits. client_flags: Integer representing client capabilities flags. max_allowed_packet: Maximum packet size. auth_plugin: Authorization plugin name. auth_plugin_class: Authorization plugin class (has higher precedence than the authorization plugin name). conn_attrs: Connection attributes. is_change_user_request: Whether is a `change user request` operation or not. ssl_enabled: Whether SSL is enabled or not. plugin_config: Custom configuration to be passed to the auth plugin when invoked. The parameters defined here will override the one defined in the auth plugin itself. Returns: handshake_response: Handshake response as per [1]. auth_strategy: Authorization plugin instance created based on the provided `auth_plugin` and `auth_plugin_class`. Raises: ProgrammingError: Handshake misses authentication info. References: [1]: https://dev.mysql.com/doc/dev/mysql-server/latest/\ page_protocol_connection_phase_packets_protocol_handshake_response.html [2]: https://dev.mysql.com/doc/dev/mysql-server/latest/\ page_protocol_basic_character_set.html#a_protocol_character_set """ b_username = username.encode() response_payload = [] if is_change_user_request: logger.debug("Got a `change user` request") logger.debug("Starting authorization phase") if handshake is None: raise ProgrammingError("Got a NULL handshake") from None if handshake.get("auth_data") is None: raise ProgrammingError("Handshake misses authentication info") from None try: auth_plugin = auth_plugin or handshake["auth_plugin"] # type: ignore[assignment] except (TypeError, KeyError) as err: raise ProgrammingError( f"Handshake misses authentication plugin info ({err})" ) from None logger.debug("The provided initial strategy is %s", auth_plugin) if is_change_user_request: response_payload.append( struct.pack( f" Tuple[ List[Tuple[BinaryProtocolType, ...]], Optional[EofPacketType], ]: """Read MySQL binary protocol result. Reads all or given number of binary resultset rows from the socket. """ rows = [] eof = None values = None i = 0 while True: if eof or i == count: break packet = await sock.read(read_timeout) if packet[4] == 254: eof = self.parse_eof(packet) values = None elif packet[4] == 0: eof = None values = self._parse_binary_values(columns, packet[5:], charset) if eof is None and values is not None: rows.append(values) elif eof is None and values is None: raise get_exception(packet) i += 1 return (rows, eof) # pylint: disable=invalid-overridden-method async def read_text_result( # type: ignore[override] self, sock: MySQLSocket, version: Tuple[int, ...], count: int = 1, read_timeout: Optional[int] = None, ) -> Tuple[ List[Tuple[Optional[bytes], ...]], Optional[EofPacketType], ]: """Read MySQL text result. Reads all or given number of rows from the socket. Returns a tuple with 2 elements: a list with all rows and the EOF packet. """ # Keep unused 'version' for API backward compatibility _ = version rows = [] eof = None rowdata = None i = 0 while True: if eof or i == count: break packet = await sock.read(read_timeout) if packet.startswith(b"\xff\xff\xff"): datas = [packet[4:]] packet = await sock.read(read_timeout) while packet.startswith(b"\xff\xff\xff"): datas.append(packet[4:]) packet = await sock.read(read_timeout) datas.append(packet[4:]) rowdata = read_lc_string_list(b"".join(datas)) elif packet[4] == 254 and packet[0] < 7: eof = self.parse_eof(packet) rowdata = None else: eof = None rowdata = read_lc_string_list(bytes(packet[4:])) if eof is None and rowdata is not None: rows.append(rowdata) elif eof is None and rowdata is None: raise get_exception(packet) i += 1 return rows, eof