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/*
File: file_pzh.c
Copyright (C) 2009 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_pzh)
#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_pzh(file_stat_t *file_stat);
/* Presto http://www.soft.es/ */
const file_hint_t file_hint_pzh= {
.extension="pzh",
.description="Presto",
.max_filesize=PHOTOREC_MAX_FILE_SIZE,
.recover=1,
.enable_by_default=1,
.register_header_check=®ister_header_check_pzh
};
static const unsigned char pzh_header[10]= {
0x00, 0x00, 0x01, '8', '.', '0', 0x00, 0x02,
0x05, 0x03
};
/*@
@ requires file_recovery->file_rename==&file_rename_pzh;
@ requires valid_file_rename_param(file_recovery);
@ ensures valid_file_rename_result(file_recovery);
@*/
static void file_rename_pzh(file_recovery_t *file_recovery)
{
unsigned char buffer[512];
FILE *file;
int buffer_size;
if((file=fopen(file_recovery->filename, "rb"))==NULL)
return;
if(fseek(file, 0x9ce, SEEK_SET)<0)
{
fclose(file);
return ;
}
buffer_size=fread(buffer, 1, sizeof(buffer), file);
fclose(file);
if(buffer_size > 0)
file_rename(file_recovery, buffer, buffer_size, 0, "pzh", 0);
}
/*@
@ requires separation: \separated(&file_hint_pzh, 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_pzh(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_pzh.extension;
file_recovery_new->file_rename=&file_rename_pzh;
file_recovery_new->min_filesize=0x9c4 + sizeof(pzh_header);
return 1;
}
static void register_header_check_pzh(file_stat_t *file_stat)
{
register_header_check(0x9c4, pzh_header, sizeof(pzh_header), &header_check_pzh, file_stat);
}
#endif
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