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/*
File: file_steuer2014.c
Copyright (C) 2016 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.
*/
#if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_steuer2014)
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#include <stdio.h>
#include <time.h>
#include "types.h"
#include "filegen.h"
#include "common.h"
#if defined(DISABLED_FOR_FRAMAC)
#undef HAVE_STRPTIME
#endif
/*@ requires valid_register_header_check(file_stat); */
static void register_header_check_steuer(file_stat_t *file_stat);
static const char *extension_steuer2014="steuer2014";
static const char *extension_steuer2015="steuer2015";
static const char *extension_steuer2016="steuer2016";
static const char *extension_steuer2017="steuer2017";
static const char *extension_steuer2018="steuer2018";
static const char *extension_steuer2019="steuer2019";
static const char *extension_steuer2020="steuer2020";
const file_hint_t file_hint_steuer2014= {
.extension="steuer2014",
.description="Steuer 2014/...",
.max_filesize=100*1024*1024,
.recover=1,
.enable_by_default=1,
.register_header_check=®ister_header_check_steuer
};
struct steuer_header
{
uint8_t magic[8];
uint32_t version1;
uint32_t version2;
char date_string[0x18];
} __attribute__ ((gcc_struct, __packed__));
/*@
@ requires buffer_size >= sizeof(struct steuer_header);
@ requires separation: \separated(&file_hint_steuer2014, 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_steuer(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)
{
const struct steuer_header *h=(const struct steuer_header *)buffer;
struct tm tm_time;
if(h->version1!=h->version2)
return 0;
reset_file_recovery(file_recovery_new);
switch(le32(h->version1))
{
case 0x00 ... 0x12:
file_recovery_new->extension=extension_steuer2014;
break;
case 0x13:
file_recovery_new->extension=extension_steuer2015;
break;
case 0x14:
file_recovery_new->extension=extension_steuer2016;
break;
case 0x15:
file_recovery_new->extension=extension_steuer2017;
break;
case 0x16:
file_recovery_new->extension=extension_steuer2018;
break;
case 0x17:
file_recovery_new->extension=extension_steuer2019;
break;
default:
file_recovery_new->extension=extension_steuer2020;
break;
}
#ifdef HAVE_STRPTIME
strptime(h->date_string, "%b %d %Y %H:%M:%S", &tm_time);
file_recovery_new->time=mktime(&tm_time);
#endif
return 1;
}
static void register_header_check_steuer(file_stat_t *file_stat)
{
static const unsigned char steuer_header[8]= {
'R' , 0x26, 'S' , 0x1a, 0x11, 0x01, 0x01, 0x00
};
register_header_check(0, steuer_header, sizeof(steuer_header), &header_check_steuer, file_stat);
}
#endif
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