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# Copyright (c) 2023, 2024, 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 """Clear Password Authentication Plugin.""" from typing import TYPE_CHECKING, Any, Optional from mysql.connector import errors from mysql.connector.logger import logger from . import MySQLAuthPlugin if TYPE_CHECKING: from ..network import MySQLSocket AUTHENTICATION_PLUGIN_CLASS = "MySQLClearPasswordAuthPlugin" class MySQLClearPasswordAuthPlugin(MySQLAuthPlugin): """Class implementing the MySQL Clear Password authentication plugin""" def _prepare_password(self) -> bytes: """Prepare and return password as as clear text. Returns: bytes: Prepared password. """ return self._password.encode() + b"\x00" @property def name(self) -> str: """Plugin official name.""" return "mysql_clear_password" @property def requires_ssl(self) -> bool: """Signals whether or not SSL is required.""" return False def auth_response(self, auth_data: bytes, **kwargs: Any) -> Optional[bytes]: """Return the prepared password to send to MySQL. Raises: InterfaceError: When SSL is required by not enabled. Returns: str: The prepared password. """ if self.requires_ssl and not self._ssl_enabled: raise errors.InterfaceError(f"{self.name} requires SSL") return self._prepare_password() async def auth_switch_response( self, sock: "MySQLSocket", auth_data: bytes, **kwargs: Any ) -> bytes: """Handles server's `auth switch request` response. Args: sock: Pointer to the socket connection. auth_data: Plugin provided data (extracted from a packet representing an `auth switch request` response). kwargs: 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: packet: Last server's response after back-and-forth communication. """ response = self.auth_response(auth_data, **kwargs) if response is None: raise errors.InterfaceError("Got a NULL auth response") logger.debug("# request: %s size: %s", response, len(response)) await sock.write(response) pkt = bytes(await sock.read()) logger.debug("# server response packet: %s", pkt) return pkt