password validation plugin type and a simple plugin

Author: vuvova

cmake/abi_check.cmake

@@ -43,6 +43,7 @@ IF(CMAKE_COMPILER_IS_GNUCC AND RUN_ABI_CHECK)
     ${CMAKE_SOURCE_DIR}/include/mysql/psi/psi_abi_v2.h
     ${CMAKE_SOURCE_DIR}/include/mysql/client_plugin.h
     ${CMAKE_SOURCE_DIR}/include/mysql/plugin_auth.h
+    ${CMAKE_SOURCE_DIR}/include/mysql/plugin_password_validation.h
   )
 
   ADD_CUSTOM_TARGET(abi_check ALL

include/mysql/plugin.h

@@ -80,17 +80,19 @@ typedef struct st_mysql_xid MYSQL_XID;
 /*
   The allowable types of plugins
 */
-#define MYSQL_UDF_PLUGIN             0  /* User-defined function        */
-#define MYSQL_STORAGE_ENGINE_PLUGIN  1  /* Storage Engine               */
+#define MYSQL_UDF_PLUGIN             0  /* not implemented              */
+#define MYSQL_STORAGE_ENGINE_PLUGIN  1
 #define MYSQL_FTPARSER_PLUGIN        2  /* Full-text parser plugin      */
-#define MYSQL_DAEMON_PLUGIN          3  /* The daemon/raw plugin type */
-#define MYSQL_INFORMATION_SCHEMA_PLUGIN  4  /* The I_S plugin type */
-#define MYSQL_AUDIT_PLUGIN           5  /* The Audit plugin type        */
-#define MYSQL_REPLICATION_PLUGIN     6	/* The replication plugin type */
-#define MYSQL_AUTHENTICATION_PLUGIN  7  /* The authentication plugin type */
-#define MYSQL_VALIDATE_PASSWORD_PLUGIN  8   /* validate password plugin type */
+#define MYSQL_DAEMON_PLUGIN          3
+#define MYSQL_INFORMATION_SCHEMA_PLUGIN  4
+#define MYSQL_AUDIT_PLUGIN           5
+#define MYSQL_REPLICATION_PLUGIN     6
+#define MYSQL_AUTHENTICATION_PLUGIN  7
 #define MYSQL_MAX_PLUGIN_TYPE_NUM    9  /* The number of plugin types   */
 
+/* MariaDB plugin types */
+#define MariaDB_PASSWORD_VALIDATION_PLUGIN 8
+
 /* We use the following strings to define licenses for plugins */
 #define PLUGIN_LICENSE_PROPRIETARY 0
 #define PLUGIN_LICENSE_GPL 1

include/mysql/plugin_password_validation.h

@@ -0,0 +1,45 @@
+#ifndef MYSQL_PLUGIN_PASSWORD_VALIDATION_INCLUDED
+/* Copyright (C) 2014 Sergei Golubchik and MariaDB
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   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 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 */
+
+/**
+  @file
+
+  Authentication Plugin API.
+
+  This file defines the API for server authentication plugins.
+*/
+
+#define MYSQL_PLUGIN_PASSWORD_VALIDATION_INCLUDED
+
+#include <mysql/plugin.h>
+
+#define MariaDB_PASSWORD_VALIDATION_INTERFACE_VERSION 0x0100
+
+/**
+  Password validation plugin descriptor
+*/
+struct st_mysql_password_validation
+{
+  int interface_version;                        /**< version plugin uses */
+  /**
+    Function provided by the plugin which should perform password validation
+    and return 0 if the password has passed the validation.
+  */
+  int (*validate_password)(MYSQL_LEX_STRING *username,
+                           MYSQL_LEX_STRING *password);
+};
+#endif
+