1 /*
2
3 File: file_wks.c
4
5 Copyright (C) 2008 Christophe GRENIER <grenier@cgsecurity.org>
6
7 This software is free software; you can redistribute it and/or modify
8 it under the teras 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_wks(file_stat_t *file_stat);
34
35 const file_hint_t file_hint_wks= {
36 .extension="wks",
37 .description="Lotus 1-2-3",
38 .max_filesize=PHOTOREC_MAX_FILE_SIZE,
39 .recover=1,
40 .enable_by_default=1,
41 .register_header_check=®ister_header_check_wks
42 };
43
44 /*
45 * record type=0 BOF=Beginning of file
46 * record length=2
47 * 0x0404 = 1-2-3
48 * 0x0405 = Symphony
49 *
50 * record type=6 RANGE=Active worksheet range
51 * See
52 * http://www.schnarff.com/file-formats/lotus-1-2-3/WSFF1.TXT
53 * http://www.schnarff.com/file-formats/lotus-1-2-3/WSFF2.TXT
54 */
header_check_wk4(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)55 static int header_check_wk4(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)
56 {
57 reset_file_recovery(file_recovery_new);
58 file_recovery_new->extension="wk4";
59 return 1;
60 }
61
header_check_wks(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)62 static int header_check_wks(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 {
64 reset_file_recovery(file_recovery_new);
65 file_recovery_new->extension=file_hint_wks.extension;
66 return 1;
67 }
68
register_header_check_wks(file_stat_t * file_stat)69 static void register_header_check_wks(file_stat_t *file_stat)
70 {
71 static const unsigned char wks_header[10] = { 0x00, 0x00, 0x02, 0x00, 0x04, 0x04,
72 0x06, 0x00, 0x08, 0x00};
73 static const unsigned char wk4_header[8] = { 0x00, 0x00, 0x1a, 0x00, 0x02, 0x10, 0x04, 0x00};
74 register_header_check(0, wks_header,sizeof(wks_header), &header_check_wks, file_stat);
75 register_header_check(0, wk4_header,sizeof(wk4_header), &header_check_wk4, file_stat);
76 }
77