1 /*
2
3 File: file_itu.c
4
5 Copyright (C) 2006-2007 Christophe GRENIER <grenier@cgsecurity.org>
6
7 This software is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License along
18 with this program; if not, write the Free Software Foundation, Inc., 51
19 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20
21 */
22
23 #ifdef HAVE_CONFIG_H
24 #include <config.h>
25 #endif
26 #ifdef HAVE_STRING_H
27 #include <string.h>
28 #endif
29 #include <stdio.h>
30 #include "types.h"
31 #include "filegen.h"
32
33 static void register_header_check_itunes(file_stat_t *file_stat);
34
35 const file_hint_t file_hint_itunes= {
36 .extension="itu",
37 .description="iTunes",
38 .max_filesize=PHOTOREC_MAX_FILE_SIZE,
39 .recover=1,
40 .enable_by_default=1,
41 .register_header_check=®ister_header_check_itunes
42 };
43
44
header_check_itunes(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)45 static int header_check_itunes(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)
46 {
47 const uint64_t size= (uint64_t)buffer[8] +
48 (((uint64_t)buffer[9])<<8) + (((uint64_t)buffer[10])<<16) + (((uint64_t)buffer[11])<<24);
49 if(size < 12)
50 return 0;
51 /* mhbd */
52 reset_file_recovery(file_recovery_new);
53 file_recovery_new->extension=file_hint_itunes.extension;
54 file_recovery_new->min_filesize=0x68;
55 file_recovery_new->calculated_file_size=size;
56 file_recovery_new->data_check=&data_check_size;
57 file_recovery_new->file_check=&file_check_size;
58 return 1;
59 }
60
register_header_check_itunes(file_stat_t * file_stat)61 static void register_header_check_itunes(file_stat_t *file_stat)
62 {
63 static const unsigned char itunes_header[8]= {'m', 'h', 'b', 'd', 0x68, 0x00, 0x00, 0x00};
64 register_header_check(0, itunes_header,sizeof(itunes_header), &header_check_itunes, file_stat);
65 }
66