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/*
File: file_raf.c
Copyright (C) 1998-2005,2007-2011 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_raf)
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#include <stdio.h>
#include "types.h"
#include "common.h"
#include "filegen.h"
/*@ requires valid_register_header_check(file_stat); */
static void register_header_check_raf(file_stat_t *file_stat);
const file_hint_t file_hint_raf= {
.extension="raf",
.description="Raw Fujifilm picture",
.max_filesize=PHOTOREC_MAX_FILE_SIZE,
.recover=1,
.enable_by_default=1,
.register_header_check=®ister_header_check_raf
};
/* Documentation source: https://libopenraw.pages.freedesktop.org/formats/raf/ */
struct header_raf
{
char magic[16];
char unk1[4]; /* 0201 */
char unk2[8]; /* FF393103 */
char model[32]; /* ie. FinePix E900 */
char dir_version[4]; /* 0100 or 0159 */
char unk3[20];
uint32_t jpg_offset;
uint32_t jpg_size;
uint32_t cfa_header_offset;
uint32_t cfa_header_size;
uint32_t cfa_offset;
uint32_t cfa_size;
} __attribute__ ((gcc_struct, __packed__));
/*@
@ requires buffer_size >= sizeof(struct header_raf);
@ requires separation: \separated(&file_hint_raf, 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_raf(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 header_raf *raf=(const struct header_raf *)buffer;
/*@ assert \valid_read(raf); */
/* Fuji */
const unsigned int cfa_header_offset=be32(raf->cfa_header_offset);
const unsigned int cfa_header_size=be32(raf->cfa_header_size);
const unsigned int cfa_offset=be32(raf->cfa_offset);
const unsigned int cfa_size=be32(raf->cfa_size);
const unsigned int jpg_offset=be32(raf->jpg_offset);
const unsigned int jpg_size=be32(raf->jpg_size);
uint64_t size=0;
if(jpg_size > 0)
{
const uint64_t tmp=(uint64_t)jpg_offset + jpg_size;
if(jpg_offset<sizeof(struct header_raf))
return 0;
if(tmp > size)
size=tmp;
}
if(cfa_size > 0)
{
const uint64_t tmp=(uint64_t)cfa_offset + cfa_size;
if(cfa_offset<sizeof(struct header_raf))
return 0;
if(size < tmp)
size=tmp;
}
if(cfa_header_size > 0)
{
const uint64_t tmp=(uint64_t)cfa_header_offset + cfa_header_size;
if(cfa_header_offset<sizeof(struct header_raf))
return 0;
if(size < tmp)
size=tmp;
}
if(size < sizeof(struct header_raf))
return 0;
reset_file_recovery(file_recovery_new);
file_recovery_new->extension=file_hint_raf.extension;
file_recovery_new->calculated_file_size=size;
/* The size is bigger than calculated_file_size */
file_recovery_new->file_check=&file_check_size_min;
return 1;
}
static void register_header_check_raf(file_stat_t *file_stat)
{
register_header_check(0, "FUJIFILMCCD-RAW ", 16, &header_check_raf, file_stat);
}
#endif
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