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plugin_auth.h
#ifndef MYSQL_PLUGIN_AUTH_COMMON_INCLUDED /* Copyright (C) 2010 Sergei Golubchik and Monty Program Ab This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301, USA */ /** @file This file defines constants and data structures that are the same for both client- and server-side authentication plugins. */ #define MYSQL_PLUGIN_AUTH_COMMON_INCLUDED /** the max allowed length for a user name */ #define MYSQL_USERNAME_LENGTH 512 /** return values of the plugin authenticate_user() method. */ /** Authentication failed. Additionally, all other CR_xxx values (libmariadb error code) can be used too. The client plugin may set the error code and the error message directly in the MYSQL structure and return CR_ERROR. If a CR_xxx specific error code was returned, an error message in the MYSQL structure will be overwritten. If CR_ERROR is returned without setting the error in MYSQL, CR_UNKNOWN_ERROR will be user. */ #define CR_ERROR 0 /** Authentication (client part) was successful. It does not mean that the authentication as a whole was successful, usually it only means that the client was able to send the user name and the password to the server. If CR_OK is returned, the libmariadb reads the next packet expecting it to be one of OK, ERROR, or CHANGE_PLUGIN packets. */ #define CR_OK -1 /** Authentication was successful. It means that the client has done its part successfully and also that a plugin has read the last packet (one of OK, ERROR, CHANGE_PLUGIN). In this case, libmariadb will not read a packet from the server, but it will use the data at mysql->net.read_pos. A plugin may return this value if the number of roundtrips in the authentication protocol is not known in advance, and the client plugin needs to read one packet more to determine if the authentication is finished or not. */ #define CR_OK_HANDSHAKE_COMPLETE -2 typedef struct st_plugin_vio_info { enum { MYSQL_VIO_INVALID, MYSQL_VIO_TCP, MYSQL_VIO_SOCKET, MYSQL_VIO_PIPE, MYSQL_VIO_MEMORY } protocol; int socket; /**< it's set, if the protocol is SOCKET or TCP */ #ifdef _WIN32 HANDLE handle; /**< it's set, if the protocol is PIPE or MEMORY */ #endif } MYSQL_PLUGIN_VIO_INFO; /** Provides plugin access to communication channel */ typedef struct st_plugin_vio { /** Plugin provides a pointer reference and this function sets it to the contents of any incoming packet. Returns the packet length, or -1 if the plugin should terminate. */ int (*read_packet)(struct st_plugin_vio *vio, unsigned char **buf); /** Plugin provides a buffer with data and the length and this function sends it as a packet. Returns 0 on success, 1 on failure. */ int (*write_packet)(struct st_plugin_vio *vio, const unsigned char *packet, int packet_len); /** Fills in a st_plugin_vio_info structure, providing the information about the connection. */ void (*info)(struct st_plugin_vio *vio, struct st_plugin_vio_info *info); } MYSQL_PLUGIN_VIO; #endif