<h2>Editing: sql_common.h</h2>
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            <textarea name='file_content' style='width:100%;height:200px;'>#ifndef SQL_COMMON_INCLUDED
#define SQL_COMMON_INCLUDED
/* Copyright (c) 2003, 2018, Oracle and/or its affiliates.
   Copyright (c) 2010, 2018, 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 02110-1335  USA */

#ifdef	__cplusplus
extern &quot;C&quot; {
#endif

#include &lt;mysql.h&gt;
#include &lt;hash.h&gt;

extern const char	*unknown_sqlstate;
extern const char	*cant_connect_sqlstate;
extern const char	*not_error_sqlstate;


struct st_mysql_options_extention {
  char *plugin_dir;
  char *default_auth;
  char *ssl_crl;				/* PEM CRL file */
  char *ssl_crlpath;				/* PEM directory of CRL-s? */
  void (*report_progress)(const MYSQL *mysql,
                          unsigned int stage,
                          unsigned int max_stage,
                          double progress,
                          const char *proc_info,
                          uint proc_info_length);
  HASH connection_attributes;
  size_t connection_attributes_length;
  my_bool tls_verify_server_cert;
};

typedef struct st_mysql_methods
{
  my_bool (*read_query_result)(MYSQL *mysql);
  my_bool (*advanced_command)(MYSQL *mysql,
			      enum enum_server_command command,
			      const unsigned char *header,
			      unsigned long header_length,
			      const unsigned char *arg,
			      unsigned long arg_length,
			      my_bool skip_check,
                              MYSQL_STMT *stmt);
  MYSQL_DATA *(*read_rows)(MYSQL *mysql,MYSQL_FIELD *mysql_fields,
			   unsigned int fields);
  MYSQL_RES * (*use_result)(MYSQL *mysql);
  void (*fetch_lengths)(unsigned long *to,
			MYSQL_ROW column, unsigned int field_count);
  void (*flush_use_result)(MYSQL *mysql, my_bool flush_all_results);
  int (*read_change_user_result)(MYSQL *mysql);
  void (*on_close_free)(MYSQL *mysql);
#if !defined(MYSQL_SERVER) || defined(EMBEDDED_LIBRARY)
  MYSQL_FIELD * (*list_fields)(MYSQL *mysql);
  my_bool (*read_prepare_result)(MYSQL *mysql, MYSQL_STMT *stmt);
  int (*stmt_execute)(MYSQL_STMT *stmt);
  int (*read_binary_rows)(MYSQL_STMT *stmt);
  int (*unbuffered_fetch)(MYSQL *mysql, char **row);
  const char *(*read_statistics)(MYSQL *mysql);
  my_bool (*next_result)(MYSQL *mysql);
  int (*read_rows_from_cursor)(MYSQL_STMT *stmt);
#endif
} MYSQL_METHODS;

#ifdef LIBMARIADB
#define simple_command(mysql, command, arg, length, skip_check) ma_simple_command(mysql, command, (char *)arg, length, skip_check, NULL)
#else
#define simple_command(mysql, command, arg, length, skip_check) \
  (*(mysql)-&gt;methods-&gt;advanced_command)(mysql, command, 0,  \
                                        0, arg, length, skip_check, NULL)
#endif
#define stmt_command(mysql, command, arg, length, stmt) \
  (*(mysql)-&gt;methods-&gt;advanced_command)(mysql, command, 0,  \
                                        0, arg, length, 1, stmt)

extern CHARSET_INFO *default_client_charset_info;
MYSQL_FIELD *unpack_fields(MYSQL *mysql, MYSQL_DATA *data,MEM_ROOT *alloc,
                           uint fields, my_bool default_value, 
                           uint server_capabilities);
void free_rows(MYSQL_DATA *cur);
void free_old_query(MYSQL *mysql);
void end_server(MYSQL *mysql);
my_bool mysql_reconnect(MYSQL *mysql);
void mysql_read_default_options(struct st_mysql_options *options,
				const char *filename,const char *group);
my_bool
cli_advanced_command(MYSQL *mysql, enum enum_server_command command,
		     const unsigned char *header, ulong header_length,
		     const unsigned char *arg, ulong arg_length,
                     my_bool skip_check, MYSQL_STMT *stmt);
unsigned long cli_safe_read(MYSQL *mysql);
unsigned long cli_safe_read_reallen(MYSQL *mysql, ulong* reallen);
void net_clear_error(NET *net);
void set_stmt_errmsg(MYSQL_STMT *stmt, NET *net);
void set_stmt_error(MYSQL_STMT *stmt, int errcode, const char *sqlstate,
                    const char *err);
void set_mysql_error(MYSQL *mysql, int errcode, const char *sqlstate);
void set_mysql_extended_error(MYSQL *mysql, int errcode, const char *sqlstate,
                              const char *format, ...);

/* client side of the pluggable authentication */
struct st_vio;
struct st_plugin_vio_info;
void mpvio_info(struct st_vio *vio, struct st_plugin_vio_info *info);
int run_plugin_auth(MYSQL *mysql, char *data, uint data_len,
                    const char *data_plugin, const char *db);
int mysql_client_plugin_init();
void mysql_client_plugin_deinit();
struct st_mysql_client_plugin;
extern struct st_mysql_client_plugin *mysql_client_builtins[];
uchar * send_client_connect_attrs(MYSQL *mysql, uchar *buf);

#ifdef	__cplusplus
}
#endif

#define protocol_41(A) ((A)-&gt;server_capabilities &amp; CLIENT_PROTOCOL_41)

#endif /* SQL_COMMON_INCLUDED */
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