Adding upstream version 1:10.11.6.upstream/1%10.11.6upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

3 files changed, 475 insertions, 0 deletions

diff --git a/libmariadb/include/mysql/client_plugin.h b/libmariadb/include/mysql/client_plugin.h
new file mode 100644
index 00000000..262fd4a0
--- /dev/null
+++ b/libmariadb/include/mysql/client_plugin.h
@@ -0,0 +1,258 @@
+/* Copyright (C) 2010 - 2012 Sergei Golubchik and Monty Program Ab
+                 2014, 2022 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
+
+#define plugin_declarations_sym "_mysql_client_plugin_declaration_"
+
+/* known plugin types */
+#define MYSQL_CLIENT_PLUGIN_RESERVED         0 
+#define MYSQL_CLIENT_PLUGIN_RESERVED2        1
+#define MYSQL_CLIENT_AUTHENTICATION_PLUGIN   2 /* authentication   */
+
+#define MYSQL_CLIENT_AUTHENTICATION_PLUGIN_INTERFACE_VERSION  0x0100
+#define MYSQL_CLIENT_MAX_PLUGINS             3
+
+/* Connector/C specific plugin types */
+#define MARIADB_CLIENT_REMOTEIO_PLUGIN       100 /* communication IO */
+#define MARIADB_CLIENT_PVIO_PLUGIN           101
+#define MARIADB_CLIENT_TRACE_PLUGIN          102
+#define MARIADB_CLIENT_CONNECTION_PLUGIN     103
+#define MARIADB_CLIENT_COMPRESSION_PLUGIN    104
+
+#define MARIADB_CLIENT_REMOTEIO_PLUGIN_INTERFACE_VERSION 0x0100
+#define MARIADB_CLIENT_PVIO_PLUGIN_INTERFACE_VERSION 0x0100
+#define MARIADB_CLIENT_TRACE_PLUGIN_INTERFACE_VERSION 0x0100
+#define MARIADB_CLIENT_CONNECTION_PLUGIN_INTERFACE_VERSION 0x0100
+#define MARIADB_CLIENT_COMPRESSION_PLUGIN_INTERFACE_VERSION 0x0100
+
+#define MARIADB_CLIENT_MAX_PLUGINS             5
+
+#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 */
+#ifndef MYSQL_CLIENT_PLUGIN_HEADER
+#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)(void);                                  \
+  int (*options)(const char *option, const void *);
+
+struct st_mysql_client_plugin
+{
+  MYSQL_CLIENT_PLUGIN_HEADER
+};
+#endif
+
+struct st_mysql;
+
+/********* connection handler plugin specific declarations **********/
+
+typedef struct st_ma_connection_plugin
+{
+  MYSQL_CLIENT_PLUGIN_HEADER
+  /* functions */
+  MYSQL *(*connect)(MYSQL *mysql, const char *host,
+                    const char *user, const char *passwd,
+		                const char *db, unsigned int port,
+                    const char *unix_socket, unsigned long clientflag);
+  void (*close)(MYSQL *mysql);
+  int (*set_optionsv)(MYSQL *mysql, unsigned int option, ...);
+  int (*set_connection)(MYSQL *mysql,enum enum_server_command command,
+                        const char *arg,
+                        size_t length, my_bool skipp_check, void *opt_arg);
+  my_bool (*reconnect)(MYSQL *mysql);
+  int (*reset)(MYSQL *mysql);
+} MARIADB_CONNECTION_PLUGIN;
+
+#define MARIADB_DB_DRIVER(a) ((a)->ext_db)
+
+/*******************  Communication IO plugin *****************/
+#include <ma_pvio.h>
+
+typedef struct st_mariadb_client_plugin_PVIO
+{
+  MYSQL_CLIENT_PLUGIN_HEADER
+  struct st_ma_pvio_methods *methods;
+} MARIADB_PVIO_PLUGIN;
+
+/******** 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);
+};
+
+/******** trace plugin *******/
+struct st_mysql_client_plugin_TRACE
+{
+  MYSQL_CLIENT_PLUGIN_HEADER
+};
+
+#include <ma_compress.h>
+
+typedef struct st_mariadb_client_plugin_COMPRESS
+{
+  MYSQL_CLIENT_PLUGIN_HEADER
+  ma_compress_ctx *(*init_ctx)(int compression_level);
+  void (*free_ctx)(ma_compress_ctx *ctx);
+  my_bool (*compress)(ma_compress_ctx *ctx, void *dst, size_t *dst_len, void *source, size_t source_len);
+  my_bool (*decompress)(ma_compress_ctx *ctx, void *dst, size_t *dst_len, void *source, size_t *source_len);
+} MARIADB_COMPRESSION_PLUGIN;
+
+/**
+  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);
+
+/********************** remote IO plugin **********************/
+#ifdef HAVE_REMOTEIO
+#include <mariadb/ma_io.h>
+
+/* Remote IO plugin */
+typedef struct st_mysql_client_plugin_REMOTEIO
+{
+  MYSQL_CLIENT_PLUGIN_HEADER
+  struct st_rio_methods *methods;
+} MARIADB_REMOTEIO_PLUGIN;
+#endif
+
+/******** 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 *
+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
+
+
diff --git a/libmariadb/include/mysql/plugin_auth.h b/libmariadb/include/mysql/plugin_auth.h
new file mode 100644
index 00000000..2be64a6b
--- /dev/null
+++ b/libmariadb/include/mysql/plugin_auth.h
@@ -0,0 +1,107 @@
+#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
+
diff --git a/libmariadb/include/mysql/plugin_auth_common.h b/libmariadb/include/mysql/plugin_auth_common.h
new file mode 100644
index 00000000..ee4b8b9c
--- /dev/null
+++ b/libmariadb/include/mysql/plugin_auth_common.h
@@ -0,0 +1,110 @@
+/* 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 */
+
+
+#ifndef MYSQL_PLUGIN_AUTH_COMMON_INCLUDED
+/**
+  @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;
+#ifndef _WIN32
+  int socket;     /**< it's set, if the protocol is SOCKET or TCP */
+#else
+  SOCKET socket;     /**< it's set, if the protocol is SOCKET or TCP */
+  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
+