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/*
File: file_mysql.c
Copyright (C) 2006-2007 Christophe GRENIER <grenier@cgsecurity.org>
This software 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; either version 2 of the License, or
(at your option) any later version.
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 the Free Software Foundation, Inc., 51
Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_mysql)
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#include <stdio.h>
#include "types.h"
#include "filegen.h"
/*@
@ requires valid_register_header_check(file_stat);
@*/
static void register_header_check_mysql(file_stat_t *file_stat);
const file_hint_t file_hint_mysql= {
.extension="MYI",
.description="MySQL (myi/frm)",
.max_filesize=0,
.recover=1,
.enable_by_default=1,
.register_header_check=®ister_header_check_mysql
};
/*@
@ requires separation: \separated(&file_hint_mysql, buffer+(..), file_recovery, file_recovery_new);
@ requires valid_header_check_param(buffer, buffer_size, safe_header_only, file_recovery, file_recovery_new);
@ ensures valid_header_check_result(\result, file_recovery_new);
@ assigns *file_recovery_new;
@*/
static int header_check_myisam(const unsigned char *buffer, const unsigned int buffer_size, const unsigned int safe_header_only, const file_recovery_t *file_recovery, file_recovery_t *file_recovery_new)
{
/* MySQL MYISAM compressed data file Version 1 */
reset_file_recovery(file_recovery_new);
file_recovery_new->extension="MYI";
return 1;
}
/*@
@ requires buffer_size >= 6;
@ requires separation: \separated(&file_hint_mysql, buffer+(..), file_recovery, file_recovery_new);
@ requires valid_header_check_param(buffer, buffer_size, safe_header_only, file_recovery, file_recovery_new);
@ ensures valid_header_check_result(\result, file_recovery_new);
@ assigns *file_recovery_new;
@*/
static int header_check_mysql(const unsigned char *buffer, const unsigned int buffer_size, const unsigned int safe_header_only, const file_recovery_t *file_recovery, file_recovery_t *file_recovery_new)
{
/* MySQL table definition file Version 7 up to 10 */
if(buffer[0]==0xfe && buffer[1]==0x01 && (buffer[2]>=0x07 && buffer[2]<=0x0A) && buffer[3]==0x09 && buffer[5]==0)
{
reset_file_recovery(file_recovery_new);
file_recovery_new->extension="frm";
return 1;
}
return 0;
}
static void register_header_check_mysql(file_stat_t *file_stat)
{
static const unsigned char mysql_header[4]= {0xfe, 0xfe, 0x07, 0x01};
static const unsigned char mysql_header_def[2]= {0xfe, 0x01};
register_header_check(0, mysql_header,sizeof(mysql_header), &header_check_myisam, file_stat);
register_header_check(0, mysql_header_def,sizeof(mysql_header_def), &header_check_mysql, file_stat);
}
#endif
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