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/*
File: file_wks.c
Copyright (C) 2008 Christophe GRENIER <grenier@cgsecurity.org>
This software is free software; you can redistribute it and/or modify
it under the teras 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_wks)
#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_wks(file_stat_t *file_stat);
const file_hint_t file_hint_wks = {
.extension = "wks",
.description = "Lotus 1-2-3",
.max_filesize = PHOTOREC_MAX_FILE_SIZE,
.recover = 1,
.enable_by_default = 1,
.register_header_check = ®ister_header_check_wks
};
/*
* record type=0 BOF=Beginning of file
* record length=2
* 0x0404 = 1-2-3
* 0x0405 = Symphony
*
* record type=6 RANGE=Active worksheet range
* See
* http://www.schnarff.com/file-formats/lotus-1-2-3/WSFF1.TXT
* http://www.schnarff.com/file-formats/lotus-1-2-3/WSFF2.TXT
*/
/*@
@ requires separation: \separated(&file_hint_wks, 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_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)
{
reset_file_recovery(file_recovery_new);
file_recovery_new->extension = "wk4";
return 1;
}
/*@
@ requires separation: \separated(&file_hint_wks, 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_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)
{
reset_file_recovery(file_recovery_new);
file_recovery_new->extension = file_hint_wks.extension;
return 1;
}
static void register_header_check_wks(file_stat_t *file_stat)
{
static const unsigned char wks_header[10] = { 0x00, 0x00, 0x02, 0x00, 0x04, 0x04,
0x06, 0x00, 0x08, 0x00 };
static const unsigned char wk4_header[8] = { 0x00, 0x00, 0x1a, 0x00, 0x02, 0x10, 0x04, 0x00 };
register_header_check(0, wks_header, sizeof(wks_header), &header_check_wks, file_stat);
register_header_check(0, wk4_header, sizeof(wk4_header), &header_check_wk4, file_stat);
}
#endif
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