1 /*
2
3 File: file_dta.c
4
5 Copyright (C) 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_dta(file_stat_t *file_stat);
34 static int header_check_dta(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);
35
36 const file_hint_t file_hint_dta= {
37 .extension="dta",
38 .description="SPSS",
39 .max_filesize=PHOTOREC_MAX_FILE_SIZE,
40 .recover=1,
41 .enable_by_default=0,
42 .register_header_check=®ister_header_check_dta
43 };
44
header_check_dta(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_dta(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 /*
48 ds_format 1 byte 0x71 or 0x72
49 byteorder 1 byte 0x01 -> HILO, 0x02 -> LOHI
50 filetype 1 byte 0x01
51 unused 1 byte ?
52 nvar (number of vars) 2 int encoded per byteorder
53 nobs (number of obs) 4 int encoded per byteorder
54 data_label 81 char dataset label, \0 terminated
55 time_stamp 18 char date/time saved, \0 terminated
56 */
57 reset_file_recovery(file_recovery_new);
58 file_recovery_new->extension=file_hint_dta.extension;
59 return 1;
60 }
61
register_header_check_dta(file_stat_t * file_stat)62 static void register_header_check_dta(file_stat_t *file_stat)
63 {
64 static const unsigned char dta_header_71le[3]= {0x71, 0x02, 0x01};
65 static const unsigned char dta_header_72le[3]= {0x72, 0x02, 0x01};
66 register_header_check(0, dta_header_71le,sizeof(dta_header_71le), &header_check_dta, file_stat);
67 register_header_check(0, dta_header_72le,sizeof(dta_header_72le), &header_check_dta, file_stat);
68 }
69