1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/*
File: file_dst.c
Copyright (C) 2016 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_dst)
#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_dst(file_stat_t *file_stat);
const file_hint_t file_hint_dst= {
.extension="dst",
.description="Tajima",
.max_filesize=PHOTOREC_MAX_FILE_SIZE,
.recover=1,
.enable_by_default=1,
.register_header_check=®ister_header_check_dst
};
/*@
@ requires buffer_size >= 512;
@ requires separation: \separated(&file_hint_dst, 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_dst(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)
{
unsigned int stitch_count=0;
char buf[8];
memcpy(&buf, &buffer[23], 7);
buf[7]='\0';
if(memcmp(buffer, "LA:",3)!=0 || memcmp(&buffer[30], "\rCO:", 4)!=0)
return 0;
if(sscanf(&buf[0], "%u", &stitch_count) < 0)
return 0;
reset_file_recovery(file_recovery_new);
file_recovery_new->extension=file_hint_dst.extension;
/* https://community.kde.org/Projects/Liberty/File_Formats/Tajima_Ternary */
/* The header is 512 bytes */
file_recovery_new->calculated_file_size=(uint64_t)512 + (uint64_t)3*stitch_count;
file_recovery_new->data_check=&data_check_size;
file_recovery_new->file_check=&file_check_size;
return 1;
}
static void register_header_check_dst(file_stat_t *file_stat)
{
register_header_check(0x13, "\rST:", 4, &header_check_dst, file_stat);
}
#endif
|