1 /*
2
3 File: file_afdesign.c
4
5 Copyright (C) 2017 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 #include "common.h"
33 #include "log.h"
34
35 static void register_header_check_afdesign(file_stat_t *file_stat);
36
37 const file_hint_t file_hint_afdesign= {
38 .extension="afdesign",
39 .description="afdesign",
40 .max_filesize=PHOTOREC_MAX_FILE_SIZE,
41 .recover=1,
42 .enable_by_default=1,
43 .register_header_check=®ister_header_check_afdesign
44 };
45
46 /* http://nickbeeuwsaert.github.io/AFDesignLoad/file_format.html */
47 struct afdesign_header
48 {
49 uint32_t signature;
50 uint32_t version;
51 char prsn[4];
52 char info[4];
53 uint64_t fat_offset;
54 uint64_t fat_length;
55 uint64_t zlib_length;
56 uint64_t unused1;
57 uint32_t creation;
58 uint32_t unused2;
59 uint64_t fat_entries;
60 uint64_t fil_entries;
61 };
62
header_check_afdesign(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)63 static int header_check_afdesign(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)
64 {
65 const struct afdesign_header *hdr=(const struct afdesign_header*)buffer;
66 if(memcmp(hdr->prsn, "nsrP", 4)!=0)
67 return 0;
68 reset_file_recovery(file_recovery_new);
69 file_recovery_new->extension=file_hint_afdesign.extension;
70 file_recovery_new->min_filesize=le64(hdr->zlib_length);
71 return 1;
72 }
73
register_header_check_afdesign(file_stat_t * file_stat)74 static void register_header_check_afdesign(file_stat_t *file_stat)
75 {
76 static const unsigned char afdesign_header[4]= { 0x00, 0xff, 'K' , 'A' };
77 register_header_check(0, afdesign_header, sizeof(afdesign_header), &header_check_afdesign, file_stat);
78 }
79