81 lines
2.6 KiB
C
81 lines
2.6 KiB
C
/*
|
|
|
|
File: file_rm.c
|
|
|
|
Copyright (C) 2007 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_rm)
|
|
#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"
|
|
#include "common.h"
|
|
|
|
/*@ requires \valid(file_stat); */
|
|
static void register_header_check_rm(file_stat_t *file_stat);
|
|
|
|
const file_hint_t file_hint_rm= {
|
|
.extension="rm",
|
|
.description="Real Audio",
|
|
.max_filesize=PHOTOREC_MAX_FILE_SIZE,
|
|
.recover=1,
|
|
.enable_by_default=1,
|
|
.register_header_check=®ister_header_check_rm
|
|
};
|
|
|
|
struct rm_header
|
|
{
|
|
uint32_t type;
|
|
uint32_t size;
|
|
uint16_t version;
|
|
uint32_t file_version;
|
|
uint32_t header_nbr;
|
|
} __attribute__ ((gcc_struct, __packed__));
|
|
|
|
/*@
|
|
@ requires buffer_size >= sizeof(struct rm_header);
|
|
@ requires \valid_read(buffer+(0..buffer_size-1));
|
|
@ requires valid_file_recovery(file_recovery);
|
|
@ requires \valid(file_recovery_new);
|
|
@ requires file_recovery_new->blocksize > 0;
|
|
@ requires separation: \separated(&file_hint_rm, buffer+(..), file_recovery, file_recovery_new);
|
|
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
|
|
@ assigns *file_recovery_new;
|
|
@*/
|
|
static int header_check_rm(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 rm_header *hdr=(const struct rm_header *)buffer;
|
|
if(be32(hdr->header_nbr) < 3)
|
|
return 0;
|
|
reset_file_recovery(file_recovery_new);
|
|
file_recovery_new->extension=file_hint_rm.extension;
|
|
return 1;
|
|
}
|
|
|
|
static void register_header_check_rm(file_stat_t *file_stat)
|
|
{
|
|
static const unsigned char rm_header[9] = { '.', 'R', 'M', 'F', 0x00, 0x00, 0x00, 0x12, 0x00};
|
|
register_header_check(0, rm_header,sizeof(rm_header), &header_check_rm, file_stat);
|
|
}
|
|
#endif
|