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/*
File: file_ddf.c
Copyright (C) 2011 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
#include <stdio.h>
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#include "types.h"
#include "filegen.h"
static void register_header_check_ddf(file_stat_t *file_stat);
const file_hint_t file_hint_ddf= {
.extension="ddf",
.description="Didson Data File",
.min_header_distance=0,
.max_filesize=PHOTOREC_MAX_FILE_SIZE,
.recover=1,
.enable_by_default=1,
.register_header_check=®ister_header_check_ddf
};
static const unsigned char ddf3_header[4]= {
'D' , 'D' , 'F' , 0x03
};
static const unsigned char ddf4_header[4]= {
'D' , 'D' , 'F' , 0x04
};
static int header_check_ddf(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)
{
if(memcmp(buffer, ddf3_header, sizeof(ddf3_header))==0 ||
memcmp(buffer, ddf4_header, sizeof(ddf4_header))==0)
{
reset_file_recovery(file_recovery_new);
file_recovery_new->extension=file_hint_ddf.extension;
if(buffer[0x43]=='-' && buffer[0x46]=='-' && buffer[0x49]=='_')
{
struct tm tm_time;
memset(&tm_time, 0, sizeof(tm_time));
tm_time.tm_sec=(buffer[0x4e]-'0')*10+(buffer[0x4f]-'0'); /* seconds 0-59 */
tm_time.tm_min=(buffer[0x4c]-'0')*10+(buffer[0x4d]-'0'); /* minutes 0-59 */
tm_time.tm_hour=(buffer[0x4a]-'0')*10+(buffer[0x4b]-'0'); /* hours 0-23*/
tm_time.tm_mday=(buffer[0x47]-'0')*10+(buffer[0x48]-'0'); /* day of the month 1-31 */
tm_time.tm_mon=(buffer[0x44]-'0')*10+(buffer[0x45]-'0')-1; /* month 0-11 */
tm_time.tm_year=(buffer[0x3f]-'0')*1000+(buffer[0x40]-'0')*100+
(buffer[0x41]-'0')*10+(buffer[0x42]-'0')-1900; /* year */
tm_time.tm_isdst = -1; /* unknown daylight saving time */
file_recovery_new->time=mktime(&tm_time);
}
return 1;
}
return 0;
}
static void register_header_check_ddf(file_stat_t *file_stat)
{
register_header_check(0, ddf3_header, sizeof(ddf3_header), &header_check_ddf, file_stat);
register_header_check(0, ddf4_header, sizeof(ddf4_header), &header_check_ddf, file_stat);
}
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