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Diffstat (limited to 'mariadb-connector-c-v_2.3.7/include/mysql/client_plugin.h')
| -rw-r--r-- | mariadb-connector-c-v_2.3.7/include/mysql/client_plugin.h | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/mariadb-connector-c-v_2.3.7/include/mysql/client_plugin.h b/mariadb-connector-c-v_2.3.7/include/mysql/client_plugin.h new file mode 100644 index 0000000..7d4fb55 --- /dev/null +++ b/mariadb-connector-c-v_2.3.7/include/mysql/client_plugin.h @@ -0,0 +1,206 @@ +/* Copyright (C) 2010 - 2012 Sergei Golubchik and Monty Program Ab + 2014 MariaDB Corporation 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 see <http://www.gnu.org/licenses> + or write to the Free Software Foundation, Inc., + 51 Franklin St., Fifth Floor, Boston, MA 02110, USA */ + +/** + @file + + MySQL Client Plugin API + + This file defines the API for plugins that work on the client side +*/ +#ifndef MYSQL_CLIENT_PLUGIN_INCLUDED +#define MYSQL_CLIENT_PLUGIN_INCLUDED + +#ifndef MYSQL_ABI_CHECK +#include <stdarg.h> +#include <stdlib.h> +#endif + +#ifndef PLUGINDIR +#define PLUGINDIR "lib/plugin" +#endif + +/* known plugin types */ +#define MYSQL_CLIENT_DB_PLUGIN 0 +#define MYSQL_CLIENT_reserved 1 +#define MYSQL_CLIENT_AUTHENTICATION_PLUGIN 2 + +#define MYSQL_CLIENT_AUTHENTICATION_PLUGIN_INTERFACE_VERSION 0x0100 +#define MYSQL_CLIENT_DB_PLUGIN_INTERFACE_VERSION 0x0100 + +#define MYSQL_CLIENT_MAX_PLUGINS 3 + +#define mysql_declare_client_plugin(X) \ + struct st_mysql_client_plugin_ ## X \ + _mysql_client_plugin_declaration_ = { \ + MYSQL_CLIENT_ ## X ## _PLUGIN, \ + MYSQL_CLIENT_ ## X ## _PLUGIN_INTERFACE_VERSION, +#define mysql_end_client_plugin } + +/* generic plugin header structure */ +#define MYSQL_CLIENT_PLUGIN_HEADER \ + int type; \ + unsigned int interface_version; \ + const char *name; \ + const char *author; \ + const char *desc; \ + unsigned int version[3]; \ + const char *license; \ + void *mysql_api; \ + int (*init)(char *, size_t, int, va_list); \ + int (*deinit)(); \ + int (*options)(const char *option, const void *); + +struct st_mysql_client_plugin +{ + MYSQL_CLIENT_PLUGIN_HEADER +}; + +struct st_mysql; + +/********* database api plugin specific declarations **********/ +typedef struct st_mariadb_client_plugin_DB +{ + MYSQL_CLIENT_PLUGIN_HEADER + /* functions */ + struct st_mysql_methods *methods; + /* + MYSQL * (*db_connect)(MYSQL *mysql,const char *host, const char *user, + const char *passwd, const char *db, uint port, + const char *unix_socket,unsigned long client_flag); + void (*db_close)(MYSQL *mysql); + int (*db_query)(MYSQL *mysql, const char *query, size_t query_len); + int (*db_read_one_row)(MYSQL *mysql, uint fields, MYSQL_ROW row, + ulong *lengths); + MYSQL_DATA *(*db_read_all_rows)(MYSQL *mysql, + MYSQL_FIELD *mysql_fields, uint fields); + void (*db_query_end)(MYSQL *mysql); + int (*db_stmt_prepare)(MYSQL_STMT *stmt, const char *stmt_str, ulong length); + my_bool (*db_stmt_close)(MYSQL_STMT *stmt); + my_bool (*is_supported_buffer_type)(enum enum_field_types type); + int (*db_stmt_fetch)(MYSQL_STMT *stmt); + int (*db_stmt_execute)(MYSQL_STMT *stmt); */ +} MARIADB_DB_PLUGIN; + +#define MARIADB_DB_DRIVER(a) ((a)->ext_db) + +/******** authentication plugin specific declarations *********/ +#include <mysql/plugin_auth_common.h> + +struct st_mysql_client_plugin_AUTHENTICATION +{ + MYSQL_CLIENT_PLUGIN_HEADER + int (*authenticate_user)(MYSQL_PLUGIN_VIO *vio, struct st_mysql *mysql); +}; + +/** + type of the mysql_authentication_dialog_ask function + + @param mysql mysql + @param type type of the input + 1 - ordinary string input + 2 - password string + @param prompt prompt + @param buf a buffer to store the use input + @param buf_len the length of the buffer + + @retval a pointer to the user input string. + It may be equal to 'buf' or to 'mysql->password'. + In all other cases it is assumed to be an allocated + string, and the "dialog" plugin will free() it. +*/ +typedef char *(*mysql_authentication_dialog_ask_t)(struct st_mysql *mysql, + int type, const char *prompt, char *buf, int buf_len); +/******** using plugins ************/ + +/** + loads a plugin and initializes it + + @param mysql MYSQL structure. only MYSQL_PLUGIN_DIR option value is used, + and last_errno/last_error, for error reporting + @param name a name of the plugin to load + @param type type of plugin that should be loaded, -1 to disable type check + @param argc number of arguments to pass to the plugin initialization + function + @param ... arguments for the plugin initialization function + + @retval + a pointer to the loaded plugin, or NULL in case of a failure +*/ +struct st_mysql_client_plugin * STDCALL +mysql_load_plugin(struct st_mysql *mysql, const char *name, int type, + int argc, ...); + +/** + loads a plugin and initializes it, taking va_list as an argument + + This is the same as mysql_load_plugin, but take va_list instead of + a list of arguments. + + @param mysql MYSQL structure. only MYSQL_PLUGIN_DIR option value is used, + and last_errno/last_error, for error reporting + @param name a name of the plugin to load + @param type type of plugin that should be loaded, -1 to disable type check + @param argc number of arguments to pass to the plugin initialization + function + @param args arguments for the plugin initialization function + + @retval + a pointer to the loaded plugin, or NULL in case of a failure +*/ +struct st_mysql_client_plugin * STDCALL +mysql_load_plugin_v(struct st_mysql *mysql, const char *name, int type, + int argc, va_list args); + +/** + finds an already loaded plugin by name, or loads it, if necessary + + @param mysql MYSQL structure. only MYSQL_PLUGIN_DIR option value is used, + and last_errno/last_error, for error reporting + @param name a name of the plugin to load + @param type type of plugin that should be loaded + + @retval + a pointer to the plugin, or NULL in case of a failure +*/ +struct st_mysql_client_plugin * STDCALL +mysql_client_find_plugin(struct st_mysql *mysql, const char *name, int type); + +/** + adds a plugin structure to the list of loaded plugins + + This is useful if an application has the necessary functionality + (for example, a special load data handler) statically linked into + the application binary. It can use this function to register the plugin + directly, avoiding the need to factor it out into a shared object. + + @param mysql MYSQL structure. It is only used for error reporting + @param plugin an st_mysql_client_plugin structure to register + + @retval + a pointer to the plugin, or NULL in case of a failure +*/ +struct st_mysql_client_plugin * STDCALL +mysql_client_register_plugin(struct st_mysql *mysql, + struct st_mysql_client_plugin *plugin); + +extern struct st_mysql_client_plugin *mysql_client_builtins[]; + +#endif + + |