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/*
File: file_mat.c
Copyright (C) 2009 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_mat)
#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_mat(file_stat_t *file_stat);
const file_hint_t file_hint_mat= {
.extension="mat",
.description="Matlab",
.max_filesize=10*1024*1024,
.recover=1,
.enable_by_default=1,
.register_header_check=®ister_header_check_mat
};
/*@
@ requires buffer_size >= 0x80;
@ requires separation: \separated(&file_hint_mat, 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_mat(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)
{
const unsigned char mat_le[4]={0x00, 0x01, 'I', 'M'};
const unsigned char mat_be[4]={0x01, 0x00, 'M', 'I'};
if(memcmp(&buffer[0x7c], mat_le, sizeof(mat_le))==0 ||
memcmp(&buffer[0x7c], mat_be, sizeof(mat_be))==0)
{
reset_file_recovery(file_recovery_new);
file_recovery_new->extension=file_hint_mat.extension;
return 1;
}
return 0;
}
static void register_header_check_mat(file_stat_t *file_stat)
{
static const unsigned char mat_header[7]= {'M', 'A', 'T', 'L', 'A', 'B', ' '};
register_header_check(0, mat_header,sizeof(mat_header), &header_check_mat, file_stat);
}
#endif
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