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-rw-r--r--libmariadb/include/mysql/plugin_auth.h107
1 files changed, 107 insertions, 0 deletions
diff --git a/libmariadb/include/mysql/plugin_auth.h b/libmariadb/include/mysql/plugin_auth.h
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+#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
+