mariadb/include/sql_common.h
Georgi Kodinov 428ff7f8a0 Bug #13708485: malformed resultset packet crashes client
Several fixes :

* sql-common/client.c
Added a validity check of the fields metadata packet sent 
by the server.
Now libmysql will check if the length of the data sent by
the server matches what's expected by the protocol before
using the data.

* client/mysqltest.cc
Fixed the error handling code in mysqltest to avoid sending
new commands when the reading the result set failed (and 
there are unread data in the pipe).

* sql_common.h + libmysql/libmysql.c + sql-common/client.c
unpack_fields() now generates a proper error when it fails.
Added a new argument to this function to support the error 
generation.

* sql/protocol.cc
Added a debug trigger to cause the server to send a NULL
insted of the packet expected by the client for testing 
purposes.
2012-06-28 18:38:55 +03:00

52 lines
2 KiB
C

/*
Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
extern const char *unknown_sqlstate;
extern const char *cant_connect_sqlstate;
extern const char *not_error_sqlstate;
#ifdef __cplusplus
extern "C" {
#endif
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);
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);
#ifdef __cplusplus
}
#endif
#define protocol_41(A) ((A)->server_capabilities & CLIENT_PROTOCOL_41)