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