1 /*
2
3 File: file_win.c
4
5 Copyright (C) 2009 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_STDLIB_H
27 #include <stdlib.h>
28 #endif
29 #ifdef HAVE_STRING_H
30 #include <string.h>
31 #endif
32 #include <stdio.h>
33 #include "types.h"
34 #include "filegen.h"
35 #include "file_txt.h"
36 #include "common.h"
37
38 static void register_header_check_win(file_stat_t *file_stat);
39
40 const file_hint_t file_hint_win= {
41 .extension="win",
42 .description="Opera preferences",
43 .max_filesize=PHOTOREC_MAX_FILE_SIZE,
44 .recover=1,
45 .enable_by_default=1,
46 .register_header_check=®ister_header_check_win
47 };
48
data_check_win(const unsigned char * buffer,const unsigned int buffer_size,file_recovery_t * file_recovery)49 static data_check_t data_check_win(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery)
50 {
51 unsigned int i;
52 char *buffer_lower=(char *)MALLOC(buffer_size+16);
53 unsigned int offset=0;
54 if(file_recovery->calculated_file_size==0)
55 offset=3;
56 i=UTF2Lat((unsigned char*)buffer_lower, &buffer[buffer_size/2+offset], buffer_size/2-offset);
57 if(i<buffer_size/2-offset)
58 {
59 if(i>=10)
60 file_recovery->calculated_file_size=file_recovery->file_size+offset+i;
61 free(buffer_lower);
62 return DC_STOP;
63 }
64 free(buffer_lower);
65 file_recovery->calculated_file_size=file_recovery->file_size+(buffer_size/2);
66 return DC_CONTINUE;
67 }
68
header_check_win(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)69 static int header_check_win(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)
70 {
71 reset_file_recovery(file_recovery_new);
72 file_recovery_new->extension=file_hint_win.extension;
73 file_recovery_new->data_check=&data_check_win;
74 file_recovery_new->file_check=&file_check_size;
75 return 1;
76 }
77
register_header_check_win(file_stat_t * file_stat)78 static void register_header_check_win(file_stat_t *file_stat)
79 {
80 static const unsigned char win_header[31]= {
81 0xef, 0xbb, 0xbf, 'O' , 'p' , 'e' , 'r' , 'a' ,
82 ' ' , 'P' , 'r' , 'e' , 'f' , 'e' , 'r' , 'e' ,
83 'n' , 'c' , 'e' , 's' , ' ' , 'v' , 'e' , 'r' ,
84 's' , 'i' , 'o' , 'n' , ' ' , '2' , '.'
85 };
86 register_header_check(0, win_header, sizeof(win_header), &header_check_win, file_stat);
87 }
88