119 lines
3.8 KiB
C
119 lines
3.8 KiB
C
/*
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File: file_steuer2014.c
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Copyright (C) 2016 Christophe GRENIER <grenier@cgsecurity.org>
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This software is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write the Free Software Foundation, Inc., 51
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Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_steuer2014)
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#include <stdio.h>
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#include <time.h>
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#include "types.h"
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#include "filegen.h"
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#include "common.h"
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#if defined(DISABLED_FOR_FRAMAC)
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#undef HAVE_STRPTIME
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#endif
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/*@ requires valid_register_header_check(file_stat); */
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static void register_header_check_steuer(file_stat_t *file_stat);
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static const char *extension_steuer2014="steuer2014";
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static const char *extension_steuer2015="steuer2015";
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static const char *extension_steuer2016="steuer2016";
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static const char *extension_steuer2017="steuer2017";
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static const char *extension_steuer2018="steuer2018";
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static const char *extension_steuer2019="steuer2019";
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static const char *extension_steuer2020="steuer2020";
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const file_hint_t file_hint_steuer2014= {
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.extension="steuer2014",
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.description="Steuer 2014/...",
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.max_filesize=100*1024*1024,
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.recover=1,
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.enable_by_default=1,
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.register_header_check=®ister_header_check_steuer
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};
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struct steuer_header
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{
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uint8_t magic[8];
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uint32_t version1;
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uint32_t version2;
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char date_string[0x18];
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} __attribute__ ((gcc_struct, __packed__));
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/*@
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@ requires buffer_size >= sizeof(struct steuer_header);
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@ requires separation: \separated(&file_hint_steuer2014, buffer+(..), file_recovery, file_recovery_new);
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@ requires valid_header_check_param(buffer, buffer_size, safe_header_only, file_recovery, file_recovery_new);
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@ ensures valid_header_check_result(\result, file_recovery_new);
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@ assigns *file_recovery_new;
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@*/
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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)
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{
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const struct steuer_header *h=(const struct steuer_header *)buffer;
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struct tm tm_time;
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if(h->version1!=h->version2)
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return 0;
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reset_file_recovery(file_recovery_new);
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switch(le32(h->version1))
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{
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case 0x00 ... 0x12:
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file_recovery_new->extension=extension_steuer2014;
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break;
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case 0x13:
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file_recovery_new->extension=extension_steuer2015;
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break;
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case 0x14:
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file_recovery_new->extension=extension_steuer2016;
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break;
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case 0x15:
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file_recovery_new->extension=extension_steuer2017;
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break;
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case 0x16:
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file_recovery_new->extension=extension_steuer2018;
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break;
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case 0x17:
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file_recovery_new->extension=extension_steuer2019;
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break;
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default:
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file_recovery_new->extension=extension_steuer2020;
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break;
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}
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#ifdef HAVE_STRPTIME
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strptime(h->date_string, "%b %d %Y %H:%M:%S", &tm_time);
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file_recovery_new->time=mktime(&tm_time);
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#endif
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return 1;
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}
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static void register_header_check_steuer(file_stat_t *file_stat)
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{
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static const unsigned char steuer_header[8]= {
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'R' , 0x26, 'S' , 0x1a, 0x11, 0x01, 0x01, 0x00
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};
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register_header_check(0, steuer_header, sizeof(steuer_header), &header_check_steuer, file_stat);
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}
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#endif
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