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/*
File: file_xv.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_xv)
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#include <stdio.h>
#include <ctype.h>
#include "types.h"
#include "common.h"
#include "filegen.h"
/*@ requires valid_register_header_check(file_stat); */
static void register_header_check_xv(file_stat_t *file_stat);
const file_hint_t file_hint_xv = {
.extension = "xv",
.description = "XV thumbnail image",
.max_filesize = PHOTOREC_MAX_FILE_SIZE,
.recover = 1,
.enable_by_default = 1,
.register_header_check = ®ister_header_check_xv
};
/*@
@ requires buffer_size >= 10;
@ requires separation: \separated(&file_hint_xv, 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_xv(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(!isprint(buffer[7]) || !isprint(buffer[8]) || !isprint(buffer[9]))
return 0;
reset_file_recovery(file_recovery_new);
file_recovery_new->extension = file_hint_xv.extension;
return 1;
}
static void register_header_check_xv(file_stat_t *file_stat)
{
static const unsigned char xv_header[7] = { 'P', '7', ' ', '3', '3', '2', '\n' };
register_header_check(0, xv_header, sizeof(xv_header), &header_check_xv, file_stat);
}
#endif
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