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/*
File: file_tiff.c
Copyright (C) 1998-2005,2007-2009 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_tiff) || defined(SINGLE_FORMAT_jpg) || defined(SINGLE_FORMAT_rw2) || defined(SINGLE_FORMAT_orf) || defined(SINGLE_FORMAT_wdp)
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <stdio.h>
#include "types.h"
#include "filegen.h"
#include "common.h"
#include "file_tiff.h"
#include "log.h"
#if defined(__FRAMAC__)
#include "__fc_builtin.h"
#endif
/*@ requires valid_register_header_check(file_stat); */
static void register_header_check_tiff(file_stat_t *file_stat);
const file_hint_t file_hint_tiff= {
.extension="tif",
.description="Tag Image File Format and some raw file formats (pef/nef/dcr/sr2/cr2)",
.max_filesize=1024*1024*1024,
.recover=1,
.enable_by_default=1,
.register_header_check=®ister_header_check_tiff
};
unsigned int tiff_type2size(const unsigned int type)
{
switch(type)
{
case 1: /* TIFF_BYTE */
case 2: /* TIFF_ASCII */
case 6: /* TIFF_SBYTE */
case 7: /* TIFF_UNDEFINED */
return 1;
case 3: /* TIFF_SHORT */
case 8: /* TIFF_SSHORT */
return 2;
case 4: /* TIFF_LONG */
case 9: /* TIFF_SLONG */
case 11: /* TIFF_FLOAT */
case 13: /* TIFF_IFD */
return 4;
case 5: /* TIFF_RATIONAL */
case 10: /* TIFF_SRATIONAL */
case 12: /* TIFF_DOUBLE */
case 16: /* TIFF_LONG8 */
case 17: /* TIFF_SLONG8 */
case 18: /* TIFF_IFD8 */
return 8;
#if 0
case 14: /* TIFF_UNICODE */
case 15: /* TIFF_COMPLEX */
#endif
default:
return 1;
}
}
#ifdef DEBUG_TIFF
const char *tag_name(unsigned int tag)
{
switch(tag)
{
case TIFFTAG_IMAGEDESCRIPTION:
return "IMAGEDESCRIPTION";
case TIFFTAG_MAKE:
return "MAKE";
case TIFFTAG_MODEL:
return "TIFFTAG_MODEL";
case TIFFTAG_SUBIFD:
return "SUBIFD";
case TIFFTAG_EXIFIFD:
return "EXIFIFD";
case TIFFTAG_STRIPOFFSETS:
return "STRIPOFFSETS";
case TIFFTAG_STRIPBYTECOUNTS:
return "STRIPBYTECOUNTS";
case TIFFTAG_KODAKIFD:
return "KODAKIFD";
case TIFFTAG_JPEGIFOFFSET:
return "JPEGIFOFFSET";
case TIFFTAG_JPEGIFBYTECOUNT:
return "JPEGIFBYTECOUNT";
case TIFFTAG_DNGPRIVATEDATA:
return "DNGPRIVATEDATA";
case EXIFTAG_MAKERNOTE:
return "EXIFTAG_MAKERNOTE";
case TIFFTAG_PRINTIM:
return "PrintIM";
case TIFFTAG_IMAGEOFFSET:
return "IMAGEOFFSET";
case TIFFTAG_IMAGEBYTECOUNT:
return "IMAGEBYTECOUNT";
case TIFFTAG_ALPHAOFFSET:
return "ALPHAOFFSET";
case TIFFTAG_ALPHABYTECOUNT:
return "ALPHABYTECOUNT";
case TIFFTAG_TILEOFFSETS:
return "TileOffsets";
case TIFFTAG_TILEBYTECOUNTS:
return "TileByteCounts";
default:
return "";
}
}
#endif
unsigned int find_tag_from_tiff_header(const unsigned char*buffer, const unsigned int buffer_size, const unsigned int tag, const unsigned char **potential_error)
{
const TIFFHeader *tiff=(const TIFFHeader *)buffer;
/*@ assert sizeof(TIFFHeader) <= sizeof(struct ifd_header); */
if(buffer_size < sizeof(struct ifd_header))
return 0;
/*@ assert buffer_size >= sizeof(TIFFHeader); */
/*@ assert buffer_size >= sizeof(struct ifd_header); */
/*@ assert \valid_read(tiff); */
#ifndef MAIN_tiff_le
if(tiff->tiff_magic==TIFF_BIGENDIAN)
return find_tag_from_tiff_header_be(buffer, buffer_size, tag, potential_error);
#endif
#ifndef MAIN_tiff_be
if(tiff->tiff_magic==TIFF_LITTLEENDIAN)
return find_tag_from_tiff_header_le(buffer, buffer_size, tag, potential_error);
#endif
return 0;
}
time_t get_date_from_tiff_header(const unsigned char *buffer, const unsigned int buffer_size)
{
const unsigned char *potential_error=NULL;
unsigned int date_asc=0;
time_t tmp;
/*@ assert \valid_read(buffer+(0..buffer_size-1)); */
/*@ assert sizeof(TIFFHeader) <= sizeof(struct ifd_header); */
if(buffer_size < sizeof(struct ifd_header) || buffer_size < 19)
return (time_t)0;
/*@ assert buffer_size >= sizeof(TIFFHeader); */
/*@ assert buffer_size >= sizeof(struct ifd_header); */
/* DateTimeOriginal */
date_asc=find_tag_from_tiff_header(buffer, buffer_size, 0x9003, &potential_error);
/* DateTimeDigitalized*/
if(date_asc==0 || date_asc > buffer_size - 19)
date_asc=find_tag_from_tiff_header(buffer, buffer_size, 0x9004, &potential_error);
if(date_asc==0 || date_asc > buffer_size - 19)
date_asc=find_tag_from_tiff_header(buffer, buffer_size, 0x132, &potential_error);
if(date_asc==0 || date_asc > buffer_size - 19)
return (time_t)0;
tmp=get_time_from_YYYY_MM_DD_HH_MM_SS(&buffer[date_asc]);
/*@ assert \valid_read(buffer+(0..buffer_size-1)); */
return tmp;
}
static void register_header_check_tiff(file_stat_t *file_stat)
{
static const unsigned char tiff_header_be[4]= { 'M','M',0x00, 0x2a};
static const unsigned char tiff_header_le[4]= { 'I','I',0x2a, 0x00};
#if !defined(SINGLE_FORMAT_jpg) && !defined(SINGLE_FORMAT_rw2) && !defined(SINGLE_FORMAT_orf) && !defined(SINGLE_FORMAT_wdp)
#if !defined(MAIN_tiff_le) && !defined(MAIN_jpg)
register_header_check(0, tiff_header_be, sizeof(tiff_header_be), &header_check_tiff_be, file_stat);
#endif
#if !defined(MAIN_tiff_be) && !defined(MAIN_jpg)
register_header_check(0, tiff_header_le, sizeof(tiff_header_le), &header_check_tiff_le, file_stat);
#endif
#endif
}
#endif
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