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/*
File: file_ds2.c
Copyright (C) 2008 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.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#include <stdio.h>
#include <ctype.h>
#include "types.h"
#include "filegen.h"
static void register_header_check_ds2(file_stat_t *file_stat);
const file_hint_t file_hint_ds2= {
.extension="ds2",
.description="Digital Speech Standard v2",
.max_filesize=PHOTOREC_MAX_FILE_SIZE,
.recover=1,
.enable_by_default=1,
.register_header_check=®ister_header_check_ds2
};
/*
Digital Speech Standard (.ds2) is a digital speech recording format
that is an evolution from dss standard which was jointly developed
and introduced by Olympus, Grundig and Phillips in 1994.
0x00 char magic[4];
0x26 char create_date[12];
0x32 char complete_date[12];
Filesize is always a multiple of 512
*/
static int header_check_ds2(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)
{
struct tm tm_time;
const unsigned char *date_asc=&buffer[0x26];
unsigned int i;
for(i=0; i<24; i++)
if(!isdigit(date_asc[i]))
return 0;
reset_file_recovery(file_recovery_new);
file_recovery_new->extension=file_hint_ds2.extension;
file_recovery_new->min_filesize=0x200;
memset(&tm_time, 0, sizeof(tm_time));
tm_time.tm_sec=(date_asc[10]-'0')*10+(date_asc[11]-'0'); /* seconds 0-59 */
tm_time.tm_min=(date_asc[8]-'0')*10+(date_asc[9]-'0'); /* minutes 0-59 */
tm_time.tm_hour=(date_asc[6]-'0')*10+(date_asc[7]-'0'); /* hours 0-23*/
tm_time.tm_mday=(date_asc[4]-'0')*10+(date_asc[5]-'0'); /* day of the month 1-31 */
tm_time.tm_mon=(date_asc[2]-'0')*10+(date_asc[3]-'0')-1; /* month 1-12 */
tm_time.tm_year=(date_asc[0]-'0')*10+(date_asc[1]-'0'); /* year */
if(tm_time.tm_year<80)
tm_time.tm_year+=100; /* year 2000 - 2079 */
tm_time.tm_isdst = -1; /* unknown daylight saving time */
file_recovery_new->time=mktime(&tm_time);
return 1;
}
static void register_header_check_ds2(file_stat_t *file_stat)
{
static const unsigned char ds2_header[4]= { 0x03, 'd','s','2'};
register_header_check(0, ds2_header,sizeof(ds2_header), &header_check_ds2, file_stat);
}
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