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8694eb14f4
php-src/ext/exif/exif.c
Nikita Popov 8694eb14f4 Merge branch 'PHP-7.4' 
* PHP-7.4:
  Fix bug #75785 by attempt switching endianness on Maker's Note
2020-08-11 16:29:01 +02:00

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/*
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Rasmus Lerdorf <rasmus@php.net> |
| Marcus Boerger <helly@php.net> |
+----------------------------------------------------------------------+
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#include "ext/standard/file.h"
#ifdef HAVE_EXIF
/* When EXIF_DEBUG is defined the module generates a lot of debug messages
* that help understanding what is going on. This can and should be used
* while extending the module as it shows if you are at the right position.
* You are always considered to have a copy of TIFF6.0 and EXIF2.10 standard.
*/
#undef EXIF_DEBUG
#ifdef EXIF_DEBUG
#define EXIFERR_DC , const char *_file, size_t _line
#define EXIFERR_CC , __FILE__, __LINE__
#else
#define EXIFERR_DC
#define EXIFERR_CC
#endif
#include "php_exif.h"
#include "exif_arginfo.h"
#include <math.h>
#include "php_ini.h"
#include "ext/standard/php_string.h"
#include "ext/standard/php_image.h"
#include "ext/standard/info.h"
/* needed for ssize_t definition */
#include <sys/types.h>
#ifdef __SANITIZE_ADDRESS__
# include <sanitizer/asan_interface.h>
#endif
typedef unsigned char uchar;
#ifndef max
# define max(a,b) ((a)>(b) ? (a) : (b))
#endif
#define EFREE_IF(ptr) if (ptr) efree(ptr)
#define MAX_IFD_NESTING_LEVEL 200
/* {{{ PHP_MINFO_FUNCTION */
PHP_MINFO_FUNCTION(exif)
{
php_info_print_table_start();
php_info_print_table_row(2, "EXIF Support", "enabled");
php_info_print_table_row(2, "Supported EXIF Version", "0220");
php_info_print_table_row(2, "Supported filetypes", "JPEG, TIFF");
if (zend_hash_str_exists(&module_registry, "mbstring", sizeof("mbstring")-1)) {
php_info_print_table_row(2, "Multibyte decoding support using mbstring", "enabled");
} else {
php_info_print_table_row(2, "Multibyte decoding support using mbstring", "disabled");
}
php_info_print_table_row(2, "Extended EXIF tag formats", "Canon, Casio, Fujifilm, Nikon, Olympus, Samsung, Panasonic, DJI, Sony, Pentax, Minolta, Sigma, Foveon, Kyocera, Ricoh, AGFA, Epson");
php_info_print_table_end();
DISPLAY_INI_ENTRIES();
}
/* }}} */
ZEND_BEGIN_MODULE_GLOBALS(exif)
char * encode_unicode;
char * decode_unicode_be;
char * decode_unicode_le;
char * encode_jis;
char * decode_jis_be;
char * decode_jis_le;
HashTable *tag_table_cache;
ZEND_END_MODULE_GLOBALS(exif)
ZEND_DECLARE_MODULE_GLOBALS(exif)
#define EXIF_G(v) ZEND_MODULE_GLOBALS_ACCESSOR(exif, v)
#if defined(ZTS) && defined(COMPILE_DL_EXIF)
ZEND_TSRMLS_CACHE_DEFINE()
#endif
/* {{{ PHP_INI */
ZEND_INI_MH(OnUpdateEncode)
{
if (new_value && ZSTR_LEN(new_value)) {
const zend_encoding **return_list;
size_t return_size;
if (FAILURE == zend_multibyte_parse_encoding_list(ZSTR_VAL(new_value), ZSTR_LEN(new_value),
&return_list, &return_size, 0)) {
php_error_docref(NULL, E_WARNING, "Illegal encoding ignored: '%s'", ZSTR_VAL(new_value));
return FAILURE;
}
pefree((void *) return_list, 0);
}
return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
}
ZEND_INI_MH(OnUpdateDecode)
{
if (new_value) {
const zend_encoding **return_list;
size_t return_size;
if (FAILURE == zend_multibyte_parse_encoding_list(ZSTR_VAL(new_value), ZSTR_LEN(new_value),
&return_list, &return_size, 0)) {
php_error_docref(NULL, E_WARNING, "Illegal encoding ignored: '%s'", ZSTR_VAL(new_value));
return FAILURE;
}
pefree((void *) return_list, 0);
}
return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
}
PHP_INI_BEGIN()
STD_PHP_INI_ENTRY("exif.encode_unicode", "ISO-8859-15", PHP_INI_ALL, OnUpdateEncode, encode_unicode, zend_exif_globals, exif_globals)
STD_PHP_INI_ENTRY("exif.decode_unicode_motorola", "UCS-2BE", PHP_INI_ALL, OnUpdateDecode, decode_unicode_be, zend_exif_globals, exif_globals)
STD_PHP_INI_ENTRY("exif.decode_unicode_intel", "UCS-2LE", PHP_INI_ALL, OnUpdateDecode, decode_unicode_le, zend_exif_globals, exif_globals)
STD_PHP_INI_ENTRY("exif.encode_jis", "", PHP_INI_ALL, OnUpdateEncode, encode_jis, zend_exif_globals, exif_globals)
STD_PHP_INI_ENTRY("exif.decode_jis_motorola", "JIS", PHP_INI_ALL, OnUpdateDecode, decode_jis_be, zend_exif_globals, exif_globals)
STD_PHP_INI_ENTRY("exif.decode_jis_intel", "JIS", PHP_INI_ALL, OnUpdateDecode, decode_jis_le, zend_exif_globals, exif_globals)
PHP_INI_END()
/* }}} */
/* {{{ PHP_GINIT_FUNCTION */
static PHP_GINIT_FUNCTION(exif)
{
#if defined(COMPILE_DL_EXIF) && defined(ZTS)
ZEND_TSRMLS_CACHE_UPDATE();
#endif
exif_globals->encode_unicode = NULL;
exif_globals->decode_unicode_be = NULL;
exif_globals->decode_unicode_le = NULL;
exif_globals->encode_jis = NULL;
exif_globals->decode_jis_be = NULL;
exif_globals->decode_jis_le = NULL;
exif_globals->tag_table_cache = NULL;
}
/* }}} */
/* {{{ PHP_MINIT_FUNCTION(exif) */
PHP_MINIT_FUNCTION(exif)
{
REGISTER_INI_ENTRIES();
if (zend_hash_str_exists(&module_registry, "mbstring", sizeof("mbstring")-1)) {
REGISTER_LONG_CONSTANT("EXIF_USE_MBSTRING", 1, CONST_CS | CONST_PERSISTENT);
} else {
REGISTER_LONG_CONSTANT("EXIF_USE_MBSTRING", 0, CONST_CS | CONST_PERSISTENT);
}
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MSHUTDOWN_FUNCTION */
PHP_MSHUTDOWN_FUNCTION(exif)
{
UNREGISTER_INI_ENTRIES();
if (EXIF_G(tag_table_cache)) {
zend_hash_destroy(EXIF_G(tag_table_cache));
free(EXIF_G(tag_table_cache));
}
return SUCCESS;
}
/* }}} */
/* {{{ exif dependencies */
static const zend_module_dep exif_module_deps[] = {
ZEND_MOD_REQUIRED("standard")
ZEND_MOD_OPTIONAL("mbstring")
ZEND_MOD_END
};
/* }}} */
/* {{{ exif_module_entry */
zend_module_entry exif_module_entry = {
STANDARD_MODULE_HEADER_EX, NULL,
exif_module_deps,
"exif",
ext_functions,
PHP_MINIT(exif),
PHP_MSHUTDOWN(exif),
NULL, NULL,
PHP_MINFO(exif),
PHP_EXIF_VERSION,
PHP_MODULE_GLOBALS(exif),
PHP_GINIT(exif),
NULL,
NULL,
STANDARD_MODULE_PROPERTIES_EX
};
/* }}} */
#ifdef COMPILE_DL_EXIF
ZEND_GET_MODULE(exif)
#endif
/* {{{ php_strnlen
* get length of string if buffer if less than buffer size or buffer size */
static size_t php_strnlen(char* str, size_t maxlen) {
size_t len = 0;
if (str && maxlen && *str) {
do {
len++;
} while (--maxlen && *(++str));
}
return len;
}
/* }}} */
/* {{{ error messages */
static const char * EXIF_ERROR_FILEEOF = "Unexpected end of file reached";
static const char * EXIF_ERROR_CORRUPT = "File structure corrupted";
static const char * EXIF_ERROR_THUMBEOF = "Thumbnail goes IFD boundary or end of file reached";
static const char * EXIF_ERROR_FSREALLOC = "Illegal reallocating of undefined file section";
#define EXIF_ERRLOG_FILEEOF(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_FILEEOF);
#define EXIF_ERRLOG_CORRUPT(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_CORRUPT);
#define EXIF_ERRLOG_THUMBEOF(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_THUMBEOF);
#define EXIF_ERRLOG_FSREALLOC(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_FSREALLOC);
/* }}} */
/* {{{ format description defines
Describes format descriptor
*/
static int php_tiff_bytes_per_format[] = {0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8, 1};
#define NUM_FORMATS 13
#define TAG_FMT_BYTE 1
#define TAG_FMT_STRING 2
#define TAG_FMT_USHORT 3
#define TAG_FMT_ULONG 4
#define TAG_FMT_URATIONAL 5
#define TAG_FMT_SBYTE 6
#define TAG_FMT_UNDEFINED 7
#define TAG_FMT_SSHORT 8
#define TAG_FMT_SLONG 9
#define TAG_FMT_SRATIONAL 10
#define TAG_FMT_SINGLE 11
#define TAG_FMT_DOUBLE 12
#define TAG_FMT_IFD 13
#ifdef EXIF_DEBUG
static char *exif_get_tagformat(int format)
{
switch(format) {
case TAG_FMT_BYTE: return "BYTE";
case TAG_FMT_STRING: return "STRING";
case TAG_FMT_USHORT: return "USHORT";
case TAG_FMT_ULONG: return "ULONG";
case TAG_FMT_URATIONAL: return "URATIONAL";
case TAG_FMT_SBYTE: return "SBYTE";
case TAG_FMT_UNDEFINED: return "UNDEFINED";
case TAG_FMT_SSHORT: return "SSHORT";
case TAG_FMT_SLONG: return "SLONG";
case TAG_FMT_SRATIONAL: return "SRATIONAL";
case TAG_FMT_SINGLE: return "SINGLE";
case TAG_FMT_DOUBLE: return "DOUBLE";
case TAG_FMT_IFD: return "IFD";
}
return "*Illegal";
}
#endif
/* Describes tag values */
#define TAG_GPS_VERSION_ID 0x0000
#define TAG_GPS_LATITUDE_REF 0x0001
#define TAG_GPS_LATITUDE 0x0002
#define TAG_GPS_LONGITUDE_REF 0x0003
#define TAG_GPS_LONGITUDE 0x0004
#define TAG_GPS_ALTITUDE_REF 0x0005
#define TAG_GPS_ALTITUDE 0x0006
#define TAG_GPS_TIME_STAMP 0x0007
#define TAG_GPS_SATELLITES 0x0008
#define TAG_GPS_STATUS 0x0009
#define TAG_GPS_MEASURE_MODE 0x000A
#define TAG_GPS_DOP 0x000B
#define TAG_GPS_SPEED_REF 0x000C
#define TAG_GPS_SPEED 0x000D
#define TAG_GPS_TRACK_REF 0x000E
#define TAG_GPS_TRACK 0x000F
#define TAG_GPS_IMG_DIRECTION_REF 0x0010
#define TAG_GPS_IMG_DIRECTION 0x0011
#define TAG_GPS_MAP_DATUM 0x0012
#define TAG_GPS_DEST_LATITUDE_REF 0x0013
#define TAG_GPS_DEST_LATITUDE 0x0014
#define TAG_GPS_DEST_LONGITUDE_REF 0x0015
#define TAG_GPS_DEST_LONGITUDE 0x0016
#define TAG_GPS_DEST_BEARING_REF 0x0017
#define TAG_GPS_DEST_BEARING 0x0018
#define TAG_GPS_DEST_DISTANCE_REF 0x0019
#define TAG_GPS_DEST_DISTANCE 0x001A
#define TAG_GPS_PROCESSING_METHOD 0x001B
#define TAG_GPS_AREA_INFORMATION 0x001C
#define TAG_GPS_DATE_STAMP 0x001D
#define TAG_GPS_DIFFERENTIAL 0x001E
#define TAG_TIFF_COMMENT 0x00FE /* SHOULDN'T HAPPEN */
#define TAG_NEW_SUBFILE 0x00FE /* New version of subfile tag */
#define TAG_SUBFILE_TYPE 0x00FF /* Old version of subfile tag */
#define TAG_IMAGEWIDTH 0x0100
#define TAG_IMAGEHEIGHT 0x0101
#define TAG_BITS_PER_SAMPLE 0x0102
#define TAG_COMPRESSION 0x0103
#define TAG_PHOTOMETRIC_INTERPRETATION 0x0106
#define TAG_TRESHHOLDING 0x0107
#define TAG_CELL_WIDTH 0x0108
#define TAG_CELL_HEIGHT 0x0109
#define TAG_FILL_ORDER 0x010A
#define TAG_DOCUMENT_NAME 0x010D
#define TAG_IMAGE_DESCRIPTION 0x010E
#define TAG_MAKE 0x010F
#define TAG_MODEL 0x0110
#define TAG_STRIP_OFFSETS 0x0111
#define TAG_ORIENTATION 0x0112
#define TAG_SAMPLES_PER_PIXEL 0x0115
#define TAG_ROWS_PER_STRIP 0x0116
#define TAG_STRIP_BYTE_COUNTS 0x0117
#define TAG_MIN_SAMPPLE_VALUE 0x0118
#define TAG_MAX_SAMPLE_VALUE 0x0119
#define TAG_X_RESOLUTION 0x011A
#define TAG_Y_RESOLUTION 0x011B
#define TAG_PLANAR_CONFIGURATION 0x011C
#define TAG_PAGE_NAME 0x011D
#define TAG_X_POSITION 0x011E
#define TAG_Y_POSITION 0x011F
#define TAG_FREE_OFFSETS 0x0120
#define TAG_FREE_BYTE_COUNTS 0x0121
#define TAG_GRAY_RESPONSE_UNIT 0x0122
#define TAG_GRAY_RESPONSE_CURVE 0x0123
#define TAG_RESOLUTION_UNIT 0x0128
#define TAG_PAGE_NUMBER 0x0129
#define TAG_TRANSFER_FUNCTION 0x012D
#define TAG_SOFTWARE 0x0131
#define TAG_DATETIME 0x0132
#define TAG_ARTIST 0x013B
#define TAG_HOST_COMPUTER 0x013C
#define TAG_PREDICTOR 0x013D
#define TAG_WHITE_POINT 0x013E
#define TAG_PRIMARY_CHROMATICITIES 0x013F
#define TAG_COLOR_MAP 0x0140
#define TAG_HALFTONE_HINTS 0x0141
#define TAG_TILE_WIDTH 0x0142
#define TAG_TILE_LENGTH 0x0143
#define TAG_TILE_OFFSETS 0x0144
#define TAG_TILE_BYTE_COUNTS 0x0145
#define TAG_SUB_IFD 0x014A
#define TAG_INK_SETMPUTER 0x014C
#define TAG_INK_NAMES 0x014D
#define TAG_NUMBER_OF_INKS 0x014E
#define TAG_DOT_RANGE 0x0150
#define TAG_TARGET_PRINTER 0x0151
#define TAG_EXTRA_SAMPLE 0x0152
#define TAG_SAMPLE_FORMAT 0x0153
#define TAG_S_MIN_SAMPLE_VALUE 0x0154
#define TAG_S_MAX_SAMPLE_VALUE 0x0155
#define TAG_TRANSFER_RANGE 0x0156
#define TAG_JPEG_TABLES 0x015B
#define TAG_JPEG_PROC 0x0200
#define TAG_JPEG_INTERCHANGE_FORMAT 0x0201
#define TAG_JPEG_INTERCHANGE_FORMAT_LEN 0x0202
#define TAG_JPEG_RESTART_INTERVAL 0x0203
#define TAG_JPEG_LOSSLESS_PREDICTOR 0x0205
#define TAG_JPEG_POINT_TRANSFORMS 0x0206
#define TAG_JPEG_Q_TABLES 0x0207
#define TAG_JPEG_DC_TABLES 0x0208
#define TAG_JPEG_AC_TABLES 0x0209
#define TAG_YCC_COEFFICIENTS 0x0211
#define TAG_YCC_SUB_SAMPLING 0x0212
#define TAG_YCC_POSITIONING 0x0213
#define TAG_REFERENCE_BLACK_WHITE 0x0214
/* 0x0301 - 0x0302 */
/* 0x0320 */
/* 0x0343 */
/* 0x5001 - 0x501B */
/* 0x5021 - 0x503B */
/* 0x5090 - 0x5091 */
/* 0x5100 - 0x5101 */
/* 0x5110 - 0x5113 */
/* 0x80E3 - 0x80E6 */
/* 0x828d - 0x828F */
#define TAG_COPYRIGHT 0x8298
#define TAG_EXPOSURETIME 0x829A
#define TAG_FNUMBER 0x829D
#define TAG_EXIF_IFD_POINTER 0x8769
#define TAG_ICC_PROFILE 0x8773
#define TAG_EXPOSURE_PROGRAM 0x8822
#define TAG_SPECTRAL_SENSITY 0x8824
#define TAG_GPS_IFD_POINTER 0x8825
#define TAG_ISOSPEED 0x8827
#define TAG_OPTOELECTRIC_CONVERSION_F 0x8828
/* 0x8829 - 0x882b */
#define TAG_EXIFVERSION 0x9000
#define TAG_DATE_TIME_ORIGINAL 0x9003
#define TAG_DATE_TIME_DIGITIZED 0x9004
#define TAG_COMPONENT_CONFIG 0x9101
#define TAG_COMPRESSED_BITS_PER_PIXEL 0x9102
#define TAG_SHUTTERSPEED 0x9201
#define TAG_APERTURE 0x9202
#define TAG_BRIGHTNESS_VALUE 0x9203
#define TAG_EXPOSURE_BIAS_VALUE 0x9204
#define TAG_MAX_APERTURE 0x9205
#define TAG_SUBJECT_DISTANCE 0x9206
#define TAG_METRIC_MODULE 0x9207
#define TAG_LIGHT_SOURCE 0x9208
#define TAG_FLASH 0x9209
#define TAG_FOCAL_LENGTH 0x920A
/* 0x920B - 0x920D */
/* 0x9211 - 0x9216 */
#define TAG_SUBJECT_AREA 0x9214
#define TAG_MAKER_NOTE 0x927C
#define TAG_USERCOMMENT 0x9286
#define TAG_SUB_SEC_TIME 0x9290
#define TAG_SUB_SEC_TIME_ORIGINAL 0x9291
#define TAG_SUB_SEC_TIME_DIGITIZED 0x9292
/* 0x923F */
/* 0x935C */
#define TAG_XP_TITLE 0x9C9B
#define TAG_XP_COMMENTS 0x9C9C
#define TAG_XP_AUTHOR 0x9C9D
#define TAG_XP_KEYWORDS 0x9C9E
#define TAG_XP_SUBJECT 0x9C9F
#define TAG_FLASH_PIX_VERSION 0xA000
#define TAG_COLOR_SPACE 0xA001
#define TAG_COMP_IMAGE_WIDTH 0xA002 /* compressed images only */
#define TAG_COMP_IMAGE_HEIGHT 0xA003
#define TAG_RELATED_SOUND_FILE 0xA004
#define TAG_INTEROP_IFD_POINTER 0xA005 /* IFD pointer */
#define TAG_FLASH_ENERGY 0xA20B
#define TAG_SPATIAL_FREQUENCY_RESPONSE 0xA20C
#define TAG_FOCALPLANE_X_RES 0xA20E
#define TAG_FOCALPLANE_Y_RES 0xA20F
#define TAG_FOCALPLANE_RESOLUTION_UNIT 0xA210
#define TAG_SUBJECT_LOCATION 0xA214
#define TAG_EXPOSURE_INDEX 0xA215
#define TAG_SENSING_METHOD 0xA217
#define TAG_FILE_SOURCE 0xA300
#define TAG_SCENE_TYPE 0xA301
#define TAG_CFA_PATTERN 0xA302
#define TAG_CUSTOM_RENDERED 0xA401
#define TAG_EXPOSURE_MODE 0xA402
#define TAG_WHITE_BALANCE 0xA403
#define TAG_DIGITAL_ZOOM_RATIO 0xA404
#define TAG_FOCAL_LENGTH_IN_35_MM_FILM 0xA405
#define TAG_SCENE_CAPTURE_TYPE 0xA406
#define TAG_GAIN_CONTROL 0xA407
#define TAG_CONTRAST 0xA408
#define TAG_SATURATION 0xA409
#define TAG_SHARPNESS 0xA40A
#define TAG_DEVICE_SETTING_DESCRIPTION 0xA40B
#define TAG_SUBJECT_DISTANCE_RANGE 0xA40C
#define TAG_IMAGE_UNIQUE_ID 0xA420
/* Olympus specific tags */
#define TAG_OLYMPUS_SPECIALMODE 0x0200
#define TAG_OLYMPUS_JPEGQUAL 0x0201
#define TAG_OLYMPUS_MACRO 0x0202
#define TAG_OLYMPUS_DIGIZOOM 0x0204
#define TAG_OLYMPUS_SOFTWARERELEASE 0x0207
#define TAG_OLYMPUS_PICTINFO 0x0208
#define TAG_OLYMPUS_CAMERAID 0x0209
/* end Olympus specific tags */
/* Internal */
#define TAG_NONE -1 /* note that -1 <> 0xFFFF */
#define TAG_COMPUTED_VALUE -2
#define TAG_END_OF_LIST 0xFFFD
/* Values for TAG_PHOTOMETRIC_INTERPRETATION */
#define PMI_BLACK_IS_ZERO 0
#define PMI_WHITE_IS_ZERO 1
#define PMI_RGB 2
#define PMI_PALETTE_COLOR 3
#define PMI_TRANSPARENCY_MASK 4
#define PMI_SEPARATED 5
#define PMI_YCBCR 6
#define PMI_CIELAB 8
/* }}} */
/* {{{ TabTable[] */
typedef const struct {
unsigned short Tag;
char *Desc;
} tag_info_type;
typedef tag_info_type tag_info_array[];
typedef tag_info_type *tag_table_type;
#define TAG_TABLE_END \
{TAG_NONE, "No tag value"},\
{TAG_COMPUTED_VALUE, "Computed value"},\
{TAG_END_OF_LIST, ""} /* Important for exif_get_tagname() IF value != "" function result is != false */
static tag_info_array tag_table_IFD = {
{ 0x000B, "ACDComment"},
{ 0x00FE, "NewSubFile"}, /* better name it 'ImageType' ? */
{ 0x00FF, "SubFile"},
{ 0x0100, "ImageWidth"},
{ 0x0101, "ImageLength"},
{ 0x0102, "BitsPerSample"},
{ 0x0103, "Compression"},
{ 0x0106, "PhotometricInterpretation"},
{ 0x010A, "FillOrder"},
{ 0x010D, "DocumentName"},
{ 0x010E, "ImageDescription"},
{ 0x010F, "Make"},
{ 0x0110, "Model"},
{ 0x0111, "StripOffsets"},
{ 0x0112, "Orientation"},
{ 0x0115, "SamplesPerPixel"},
{ 0x0116, "RowsPerStrip"},
{ 0x0117, "StripByteCounts"},
{ 0x0118, "MinSampleValue"},
{ 0x0119, "MaxSampleValue"},
{ 0x011A, "XResolution"},
{ 0x011B, "YResolution"},
{ 0x011C, "PlanarConfiguration"},
{ 0x011D, "PageName"},
{ 0x011E, "XPosition"},
{ 0x011F, "YPosition"},
{ 0x0120, "FreeOffsets"},
{ 0x0121, "FreeByteCounts"},
{ 0x0122, "GrayResponseUnit"},
{ 0x0123, "GrayResponseCurve"},
{ 0x0124, "T4Options"},
{ 0x0125, "T6Options"},
{ 0x0128, "ResolutionUnit"},
{ 0x0129, "PageNumber"},
{ 0x012D, "TransferFunction"},
{ 0x0131, "Software"},
{ 0x0132, "DateTime"},
{ 0x013B, "Artist"},
{ 0x013C, "HostComputer"},
{ 0x013D, "Predictor"},
{ 0x013E, "WhitePoint"},
{ 0x013F, "PrimaryChromaticities"},
{ 0x0140, "ColorMap"},
{ 0x0141, "HalfToneHints"},
{ 0x0142, "TileWidth"},
{ 0x0143, "TileLength"},
{ 0x0144, "TileOffsets"},
{ 0x0145, "TileByteCounts"},
{ 0x014A, "SubIFD"},
{ 0x014C, "InkSet"},
{ 0x014D, "InkNames"},
{ 0x014E, "NumberOfInks"},
{ 0x0150, "DotRange"},
{ 0x0151, "TargetPrinter"},
{ 0x0152, "ExtraSample"},
{ 0x0153, "SampleFormat"},
{ 0x0154, "SMinSampleValue"},
{ 0x0155, "SMaxSampleValue"},
{ 0x0156, "TransferRange"},
{ 0x0157, "ClipPath"},
{ 0x0158, "XClipPathUnits"},
{ 0x0159, "YClipPathUnits"},
{ 0x015A, "Indexed"},
{ 0x015B, "JPEGTables"},
{ 0x015F, "OPIProxy"},
{ 0x0200, "JPEGProc"},
{ 0x0201, "JPEGInterchangeFormat"},
{ 0x0202, "JPEGInterchangeFormatLength"},
{ 0x0203, "JPEGRestartInterval"},
{ 0x0205, "JPEGLosslessPredictors"},
{ 0x0206, "JPEGPointTransforms"},
{ 0x0207, "JPEGQTables"},
{ 0x0208, "JPEGDCTables"},
{ 0x0209, "JPEGACTables"},
{ 0x0211, "YCbCrCoefficients"},
{ 0x0212, "YCbCrSubSampling"},
{ 0x0213, "YCbCrPositioning"},
{ 0x0214, "ReferenceBlackWhite"},
{ 0x02BC, "ExtensibleMetadataPlatform"}, /* XAP: Extensible Authoring Publishing, obsoleted by XMP: Extensible Metadata Platform */
{ 0x0301, "Gamma"},
{ 0x0302, "ICCProfileDescriptor"},
{ 0x0303, "SRGBRenderingIntent"},
{ 0x0320, "ImageTitle"},
{ 0x5001, "ResolutionXUnit"},
{ 0x5002, "ResolutionYUnit"},
{ 0x5003, "ResolutionXLengthUnit"},
{ 0x5004, "ResolutionYLengthUnit"},
{ 0x5005, "PrintFlags"},
{ 0x5006, "PrintFlagsVersion"},
{ 0x5007, "PrintFlagsCrop"},
{ 0x5008, "PrintFlagsBleedWidth"},
{ 0x5009, "PrintFlagsBleedWidthScale"},
{ 0x500A, "HalftoneLPI"},
{ 0x500B, "HalftoneLPIUnit"},
{ 0x500C, "HalftoneDegree"},
{ 0x500D, "HalftoneShape"},
{ 0x500E, "HalftoneMisc"},
{ 0x500F, "HalftoneScreen"},
{ 0x5010, "JPEGQuality"},
{ 0x5011, "GridSize"},
{ 0x5012, "ThumbnailFormat"},
{ 0x5013, "ThumbnailWidth"},
{ 0x5014, "ThumbnailHeight"},
{ 0x5015, "ThumbnailColorDepth"},
{ 0x5016, "ThumbnailPlanes"},
{ 0x5017, "ThumbnailRawBytes"},
{ 0x5018, "ThumbnailSize"},
{ 0x5019, "ThumbnailCompressedSize"},
{ 0x501A, "ColorTransferFunction"},
{ 0x501B, "ThumbnailData"},
{ 0x5020, "ThumbnailImageWidth"},
{ 0x5021, "ThumbnailImageHeight"},
{ 0x5022, "ThumbnailBitsPerSample"},
{ 0x5023, "ThumbnailCompression"},
{ 0x5024, "ThumbnailPhotometricInterp"},
{ 0x5025, "ThumbnailImageDescription"},
{ 0x5026, "ThumbnailEquipMake"},
{ 0x5027, "ThumbnailEquipModel"},
{ 0x5028, "ThumbnailStripOffsets"},
{ 0x5029, "ThumbnailOrientation"},
{ 0x502A, "ThumbnailSamplesPerPixel"},
{ 0x502B, "ThumbnailRowsPerStrip"},
{ 0x502C, "ThumbnailStripBytesCount"},
{ 0x502D, "ThumbnailResolutionX"},
{ 0x502E, "ThumbnailResolutionY"},
{ 0x502F, "ThumbnailPlanarConfig"},
{ 0x5030, "ThumbnailResolutionUnit"},
{ 0x5031, "ThumbnailTransferFunction"},
{ 0x5032, "ThumbnailSoftwareUsed"},
{ 0x5033, "ThumbnailDateTime"},
{ 0x5034, "ThumbnailArtist"},
{ 0x5035, "ThumbnailWhitePoint"},
{ 0x5036, "ThumbnailPrimaryChromaticities"},
{ 0x5037, "ThumbnailYCbCrCoefficients"},
{ 0x5038, "ThumbnailYCbCrSubsampling"},
{ 0x5039, "ThumbnailYCbCrPositioning"},
{ 0x503A, "ThumbnailRefBlackWhite"},
{ 0x503B, "ThumbnailCopyRight"},
{ 0x5090, "LuminanceTable"},
{ 0x5091, "ChrominanceTable"},
{ 0x5100, "FrameDelay"},
{ 0x5101, "LoopCount"},
{ 0x5110, "PixelUnit"},
{ 0x5111, "PixelPerUnitX"},
{ 0x5112, "PixelPerUnitY"},
{ 0x5113, "PaletteHistogram"},
{ 0x1000, "RelatedImageFileFormat"},
{ 0x800D, "ImageID"},
{ 0x80E3, "Matteing"}, /* obsoleted by ExtraSamples */
{ 0x80E4, "DataType"}, /* obsoleted by SampleFormat */
{ 0x80E5, "ImageDepth"},
{ 0x80E6, "TileDepth"},
{ 0x828D, "CFARepeatPatternDim"},
{ 0x828E, "CFAPattern"},
{ 0x828F, "BatteryLevel"},
{ 0x8298, "Copyright"},
{ 0x829A, "ExposureTime"},
{ 0x829D, "FNumber"},
{ 0x83BB, "IPTC/NAA"},
{ 0x84E3, "IT8RasterPadding"},
{ 0x84E5, "IT8ColorTable"},
{ 0x8649, "ImageResourceInformation"}, /* PhotoShop */
{ 0x8769, "Exif_IFD_Pointer"},
{ 0x8773, "ICC_Profile"},
{ 0x8822, "ExposureProgram"},
{ 0x8824, "SpectralSensity"},
{ 0x8825, "GPS_IFD_Pointer"},
{ 0x8827, "ISOSpeedRatings"},
{ 0x8828, "OECF"},
{ 0x9000, "ExifVersion"},
{ 0x9003, "DateTimeOriginal"},
{ 0x9004, "DateTimeDigitized"},
{ 0x9101, "ComponentsConfiguration"},
{ 0x9102, "CompressedBitsPerPixel"},
{ 0x9201, "ShutterSpeedValue"},
{ 0x9202, "ApertureValue"},
{ 0x9203, "BrightnessValue"},
{ 0x9204, "ExposureBiasValue"},
{ 0x9205, "MaxApertureValue"},
{ 0x9206, "SubjectDistance"},
{ 0x9207, "MeteringMode"},
{ 0x9208, "LightSource"},
{ 0x9209, "Flash"},
{ 0x920A, "FocalLength"},
{ 0x920B, "FlashEnergy"}, /* 0xA20B in JPEG */
{ 0x920C, "SpatialFrequencyResponse"}, /* 0xA20C - - */
{ 0x920D, "Noise"},
{ 0x920E, "FocalPlaneXResolution"}, /* 0xA20E - - */
{ 0x920F, "FocalPlaneYResolution"}, /* 0xA20F - - */
{ 0x9210, "FocalPlaneResolutionUnit"}, /* 0xA210 - - */
{ 0x9211, "ImageNumber"},
{ 0x9212, "SecurityClassification"},
{ 0x9213, "ImageHistory"},
{ 0x9214, "SubjectLocation"}, /* 0xA214 - - */
{ 0x9215, "ExposureIndex"}, /* 0xA215 - - */
{ 0x9216, "TIFF/EPStandardID"},
{ 0x9217, "SensingMethod"}, /* 0xA217 - - */
{ 0x923F, "StoNits"},
{ 0x927C, "MakerNote"},
{ 0x9286, "UserComment"},
{ 0x9290, "SubSecTime"},
{ 0x9291, "SubSecTimeOriginal"},
{ 0x9292, "SubSecTimeDigitized"},
{ 0x935C, "ImageSourceData"}, /* "Adobe Photoshop Document Data Block": 8BIM... */
{ 0x9c9b, "Title" }, /* Win XP specific, Unicode */
{ 0x9c9c, "Comments" }, /* Win XP specific, Unicode */
{ 0x9c9d, "Author" }, /* Win XP specific, Unicode */
{ 0x9c9e, "Keywords" }, /* Win XP specific, Unicode */
{ 0x9c9f, "Subject" }, /* Win XP specific, Unicode, not to be confused with SubjectDistance and SubjectLocation */
{ 0xA000, "FlashPixVersion"},
{ 0xA001, "ColorSpace"},
{ 0xA002, "ExifImageWidth"},
{ 0xA003, "ExifImageLength"},
{ 0xA004, "RelatedSoundFile"},
{ 0xA005, "InteroperabilityOffset"},
{ 0xA20B, "FlashEnergy"}, /* 0x920B in TIFF/EP */
{ 0xA20C, "SpatialFrequencyResponse"}, /* 0x920C - - */
{ 0xA20D, "Noise"},
{ 0xA20E, "FocalPlaneXResolution"}, /* 0x920E - - */
{ 0xA20F, "FocalPlaneYResolution"}, /* 0x920F - - */
{ 0xA210, "FocalPlaneResolutionUnit"}, /* 0x9210 - - */
{ 0xA211, "ImageNumber"},
{ 0xA212, "SecurityClassification"},
{ 0xA213, "ImageHistory"},
{ 0xA214, "SubjectLocation"}, /* 0x9214 - - */
{ 0xA215, "ExposureIndex"}, /* 0x9215 - - */
{ 0xA216, "TIFF/EPStandardID"},
{ 0xA217, "SensingMethod"}, /* 0x9217 - - */
{ 0xA300, "FileSource"},
{ 0xA301, "SceneType"},
{ 0xA302, "CFAPattern"},
{ 0xA401, "CustomRendered"},
{ 0xA402, "ExposureMode"},
{ 0xA403, "WhiteBalance"},
{ 0xA404, "DigitalZoomRatio"},
{ 0xA405, "FocalLengthIn35mmFilm"},
{ 0xA406, "SceneCaptureType"},
{ 0xA407, "GainControl"},
{ 0xA408, "Contrast"},
{ 0xA409, "Saturation"},
{ 0xA40A, "Sharpness"},
{ 0xA40B, "DeviceSettingDescription"},
{ 0xA40C, "SubjectDistanceRange"},
{ 0xA420, "ImageUniqueID"},
TAG_TABLE_END
} ;
static tag_info_array tag_table_GPS = {
{ 0x0000, "GPSVersion"},
{ 0x0001, "GPSLatitudeRef"},
{ 0x0002, "GPSLatitude"},
{ 0x0003, "GPSLongitudeRef"},
{ 0x0004, "GPSLongitude"},
{ 0x0005, "GPSAltitudeRef"},
{ 0x0006, "GPSAltitude"},
{ 0x0007, "GPSTimeStamp"},
{ 0x0008, "GPSSatellites"},
{ 0x0009, "GPSStatus"},
{ 0x000A, "GPSMeasureMode"},
{ 0x000B, "GPSDOP"},
{ 0x000C, "GPSSpeedRef"},
{ 0x000D, "GPSSpeed"},
{ 0x000E, "GPSTrackRef"},
{ 0x000F, "GPSTrack"},
{ 0x0010, "GPSImgDirectionRef"},
{ 0x0011, "GPSImgDirection"},
{ 0x0012, "GPSMapDatum"},
{ 0x0013, "GPSDestLatitudeRef"},
{ 0x0014, "GPSDestLatitude"},
{ 0x0015, "GPSDestLongitudeRef"},
{ 0x0016, "GPSDestLongitude"},
{ 0x0017, "GPSDestBearingRef"},
{ 0x0018, "GPSDestBearing"},
{ 0x0019, "GPSDestDistanceRef"},
{ 0x001A, "GPSDestDistance"},
{ 0x001B, "GPSProcessingMode"},
{ 0x001C, "GPSAreaInformation"},
{ 0x001D, "GPSDateStamp"},
{ 0x001E, "GPSDifferential"},
TAG_TABLE_END
};
static tag_info_array tag_table_IOP = {
{ 0x0001, "InterOperabilityIndex"}, /* should be 'R98' or 'THM' */
{ 0x0002, "InterOperabilityVersion"},
{ 0x1000, "RelatedFileFormat"},
{ 0x1001, "RelatedImageWidth"},
{ 0x1002, "RelatedImageHeight"},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_CANON = {
{ 0x0001, "ModeArray"}, /* guess */
{ 0x0004, "ImageInfo"}, /* guess */
{ 0x0006, "ImageType"},
{ 0x0007, "FirmwareVersion"},
{ 0x0008, "ImageNumber"},
{ 0x0009, "OwnerName"},
{ 0x000C, "Camera"},
{ 0x000F, "CustomFunctions"},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_CASIO = {
{ 0x0001, "RecordingMode"},
{ 0x0002, "Quality"},
{ 0x0003, "FocusingMode"},
{ 0x0004, "FlashMode"},
{ 0x0005, "FlashIntensity"},
{ 0x0006, "ObjectDistance"},
{ 0x0007, "WhiteBalance"},
{ 0x000A, "DigitalZoom"},
{ 0x000B, "Sharpness"},
{ 0x000C, "Contrast"},
{ 0x000D, "Saturation"},
{ 0x0014, "CCDSensitivity"},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_FUJI = {
{ 0x0000, "Version"},
{ 0x1000, "Quality"},
{ 0x1001, "Sharpness"},
{ 0x1002, "WhiteBalance"},
{ 0x1003, "Color"},
{ 0x1004, "Tone"},
{ 0x1010, "FlashMode"},
{ 0x1011, "FlashStrength"},
{ 0x1020, "Macro"},
{ 0x1021, "FocusMode"},
{ 0x1030, "SlowSync"},
{ 0x1031, "PictureMode"},
{ 0x1100, "ContTake"},
{ 0x1300, "BlurWarning"},
{ 0x1301, "FocusWarning"},
{ 0x1302, "AEWarning "},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_NIKON = {
{ 0x0003, "Quality"},
{ 0x0004, "ColorMode"},
{ 0x0005, "ImageAdjustment"},
{ 0x0006, "CCDSensitivity"},
{ 0x0007, "WhiteBalance"},
{ 0x0008, "Focus"},
{ 0x000a, "DigitalZoom"},
{ 0x000b, "Converter"},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_NIKON_990 = {
{ 0x0001, "Version"},
{ 0x0002, "ISOSetting"},
{ 0x0003, "ColorMode"},
{ 0x0004, "Quality"},
{ 0x0005, "WhiteBalance"},
{ 0x0006, "ImageSharpening"},
{ 0x0007, "FocusMode"},
{ 0x0008, "FlashSetting"},
{ 0x000F, "ISOSelection"},
{ 0x0080, "ImageAdjustment"},
{ 0x0082, "AuxiliaryLens"},
{ 0x0085, "ManualFocusDistance"},
{ 0x0086, "DigitalZoom"},
{ 0x0088, "AFFocusPosition"},
{ 0x0010, "DataDump"},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_OLYMPUS = {
{ 0x0200, "SpecialMode"},
{ 0x0201, "JPEGQuality"},
{ 0x0202, "Macro"},
{ 0x0204, "DigitalZoom"},
{ 0x0207, "SoftwareRelease"},
{ 0x0208, "PictureInfo"},
{ 0x0209, "CameraId"},
{ 0x0F00, "DataDump"},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_SAMSUNG = {
{ 0x0001, "Version"},
{ 0x0021, "PictureWizard"},
{ 0x0030, "LocalLocationName"},
{ 0x0031, "LocationName"},
{ 0x0035, "Preview"},
{ 0x0043, "CameraTemperature"},
{ 0xa001, "FirmwareName"},
{ 0xa003, "LensType"},
{ 0xa004, "LensFirmware"},
{ 0xa010, "SensorAreas"},
{ 0xa011, "ColorSpace"},
{ 0xa012, "SmartRange"},
{ 0xa013, "ExposureBiasValue"},
{ 0xa014, "ISO"},
{ 0xa018, "ExposureTime"},
{ 0xa019, "FNumber"},
{ 0xa01a, "FocalLengthIn35mmFormat"},
{ 0xa020, "EncryptionKey"},
{ 0xa021, "WB_RGGBLevelsUncorrected"},
{ 0xa022, "WB_RGGBLevelsAuto"},
{ 0xa023, "WB_RGGBLevelsIlluminator1"},
{ 0xa024, "WB_RGGBLevelsIlluminator2"},
{ 0xa028, "WB_RGGBLevelsBlack"},
{ 0xa030, "ColorMatrix"},
{ 0xa031, "ColorMatrixSRGB"},
{ 0xa032, "ColorMatrixAdobeRGB"},
{ 0xa040, "ToneCurve1"},
{ 0xa041, "ToneCurve2"},
{ 0xa042, "ToneCurve3"},
{ 0xa043, "ToneCurve4"},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_PANASONIC = {
{ 0x0001, "Quality"},
{ 0x0002, "FirmwareVersion"},
{ 0x0003, "WhiteBalance"},
{ 0x0007, "FocusMode"},
{ 0x000f, "AFMode"},
{ 0x001a, "ImageStabilization"},
{ 0x001c, "Macro"},
{ 0x001f, "ShootingMode"},
{ 0x0020, "Audio"},
{ 0x0021, "DataDump"},
{ 0x0023, "WhiteBalanceBias"},
{ 0x0024, "FlashBias"},
{ 0x0025, "InternalSerialNumber"},
{ 0x0026, "ExifVersion"},
{ 0x0028, "ColorEffect"},
{ 0x0029, "TimeSincePowerOn"},
{ 0x002a, "BurstMode"},
{ 0x002b, "SequenceNumber"},
{ 0x002c, "Contrast"},
{ 0x002d, "NoiseReduction"},
{ 0x002e, "SelfTimer"},
{ 0x0030, "Rotation"},
{ 0x0031, "AFAssistLamp"},
{ 0x0032, "ColorMode"},
{ 0x0033, "BabyAge1"},
{ 0x0034, "OpticalZoomMode"},
{ 0x0035, "ConversionLens"},
{ 0x0036, "TravelDay"},
{ 0x0039, "Contrast"},
{ 0x003a, "WorldTimeLocation"},
{ 0x003b, "TextStamp1"},
{ 0x003c, "ProgramISO"},
{ 0x003d, "AdvancedSceneType"},
{ 0x003e, "TextStamp2"},
{ 0x003f, "FacesDetected"},
{ 0x0040, "Saturation"},
{ 0x0041, "Sharpness"},
{ 0x0042, "FilmMode"},
{ 0x0044, "ColorTempKelvin"},
{ 0x0045, "BracketSettings"},
{ 0x0046, "WBAdjustAB"},
{ 0x0047, "WBAdjustGM"},
{ 0x0048, "FlashCurtain"},
{ 0x0049, "LongShutterNoiseReduction"},
{ 0x004b, "ImageWidth"},
{ 0x004c, "ImageHeight"},
{ 0x004d, "AFPointPosition"},
{ 0x004e, "FaceDetInfo"},
{ 0x0051, "LensType"},
{ 0x0052, "LensSerialNumber"},
{ 0x0053, "AccessoryType"},
{ 0x0054, "AccessorySerialNumber"},
{ 0x0059, "Transform1"},
{ 0x005d, "IntelligentExposure"},
{ 0x0060, "LensFirmwareVersion"},
{ 0x0061, "FaceRecInfo"},
{ 0x0062, "FlashWarning"},
{ 0x0065, "Title"},
{ 0x0066, "BabyName"},
{ 0x0067, "Location"},
{ 0x0069, "Country"},
{ 0x006b, "State"},
{ 0x006d, "City"},
{ 0x006f, "Landmark"},
{ 0x0070, "IntelligentResolution"},
{ 0x0077, "BurstSheed"},
{ 0x0079, "IntelligentDRange"},
{ 0x007c, "ClearRetouch"},
{ 0x0080, "City2"},
{ 0x0086, "ManometerPressure"},
{ 0x0089, "PhotoStyle"},
{ 0x008a, "ShadingCompensation"},
{ 0x008c, "AccelerometerZ"},
{ 0x008d, "AccelerometerX"},
{ 0x008e, "AccelerometerY"},
{ 0x008f, "CameraOrientation"},
{ 0x0090, "RollAngle"},
{ 0x0091, "PitchAngle"},
{ 0x0093, "SweepPanoramaDirection"},
{ 0x0094, "PanoramaFieldOfView"},
{ 0x0096, "TimerRecording"},
{ 0x009d, "InternalNDFilter"},
{ 0x009e, "HDR"},
{ 0x009f, "ShutterType"},
{ 0x00a3, "ClearRetouchValue"},
{ 0x00ab, "TouchAE"},
{ 0x0e00, "PrintIM"},
{ 0x8000, "MakerNoteVersion"},
{ 0x8001, "SceneMode"},
{ 0x8004, "WBRedLevel"},
{ 0x8005, "WBGreenLevel"},
{ 0x8006, "WBBlueLevel"},
{ 0x8007, "FlashFired"},
{ 0x8008, "TextStamp3"},
{ 0x8009, "TextStamp4"},
{ 0x8010, "BabyAge2"},
{ 0x8012, "Transform2"},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_DJI = {
{ 0x0001, "Make"},
{ 0x0003, "SpeedX"},
{ 0x0004, "SpeedY"},
{ 0x0005, "SpeedZ"},
{ 0x0006, "Pitch"},
{ 0x0007, "Yaw"},
{ 0x0008, "Roll"},
{ 0x0009, "CameraPitch"},
{ 0x000a, "CameraYaw"},
{ 0x000b, "CameraRoll"},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_SONY = {
{ 0x0102, "Quality"},
{ 0x0104, "FlashExposureComp"},
{ 0x0105, "Teleconverter"},
{ 0x0112, "WhiteBalanceFineTune"},
{ 0x0114, "CameraSettings"},
{ 0x0115, "WhiteBalance"},
{ 0x0116, "ExtraInfo"},
{ 0x0e00, "PrintIM"},
{ 0x1000, "MultiBurstMode"},
{ 0x1001, "MultiBurstImageWidth"},
{ 0x1002, "MultiBurstImageHeight"},
{ 0x1003, "Panorama"},
{ 0x2001, "PreviewImage"},
{ 0x2002, "Rating"},
{ 0x2004, "Contrast"},
{ 0x2005, "Saturation"},
{ 0x2006, "Sharpness"},
{ 0x2007, "Brightness"},
{ 0x2008, "LongExposureNoiseReduction"},
{ 0x2009, "HighISONoiseReduction"},
{ 0x200a, "AutoHDR"},
{ 0x3000, "ShotInfo"},
{ 0xb000, "FileFormat"},
{ 0xb001, "SonyModelID"},
{ 0xb020, "ColorReproduction"},
{ 0xb021, "ColorTemperature"},
{ 0xb022, "ColorCompensationFilter"},
{ 0xb023, "SceneMode"},
{ 0xb024, "ZoneMatching"},
{ 0xb025, "DynamicRangeOptimizer"},
{ 0xb026, "ImageStabilization"},
{ 0xb027, "LensID"},
{ 0xb028, "MinoltaMakerNote"},
{ 0xb029, "ColorMode"},
{ 0xb02b, "FullImageSize"},
{ 0xb02c, "PreviewImageSize"},
{ 0xb040, "Macro"},
{ 0xb041, "ExposureMode"},
{ 0xb042, "FocusMode"},
{ 0xb043, "AFMode"},
{ 0xb044, "AFIlluminator"},
{ 0xb047, "JPEGQuality"},
{ 0xb048, "FlashLevel"},
{ 0xb049, "ReleaseMode"},
{ 0xb04a, "SequenceNumber"},
{ 0xb04b, "AntiBlur"},
{ 0xb04e, "FocusMode"},
{ 0xb04f, "DynamicRangeOptimizer"},
{ 0xb050, "HighISONoiseReduction2"},
{ 0xb052, "IntelligentAuto"},
{ 0xb054, "WhiteBalance2"},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_PENTAX = {
{ 0x0000, "Version"},
{ 0x0001, "Mode"},
{ 0x0002, "PreviewResolution"},
{ 0x0003, "PreviewLength"},
{ 0x0004, "PreviewOffset"},
{ 0x0005, "ModelID"},
{ 0x0006, "Date"},
{ 0x0007, "Time"},
{ 0x0008, "Quality"},
{ 0x0009, "Size"},
{ 0x000c, "Flash"},
{ 0x000d, "Focus"},
{ 0x000e, "AFPoint"},
{ 0x000f, "AFPointInFocus"},
{ 0x0012, "ExposureTime"},
{ 0x0013, "FNumber"},
{ 0x0014, "ISO"},
{ 0x0016, "ExposureCompensation"},
{ 0x0017, "MeteringMode"},
{ 0x0018, "AutoBracketing"},
{ 0x0019, "WhiteBalance"},
{ 0x001a, "WhiteBalanceMode"},
{ 0x001b, "BlueBalance"},
{ 0x001c, "RedBalance"},
{ 0x001d, "FocalLength"},
{ 0x001e, "DigitalZoom"},
{ 0x001f, "Saturation"},
{ 0x0020, "Contrast"},
{ 0x0021, "Sharpness"},
{ 0x0022, "Location"},
{ 0x0023, "Hometown"},
{ 0x0024, "Destination"},
{ 0x0025, "HometownDST"},
{ 0x0026, "DestinationDST"},
{ 0x0027, "DSPFirmwareVersion"},
{ 0x0028, "CPUFirmwareVersion"},
{ 0x0029, "FrameNumber"},
{ 0x002d, "EffectiveLV"},
{ 0x0032, "ImageProcessing"},
{ 0x0033, "PictureMode"},
{ 0x0034, "DriveMode"},
{ 0x0037, "ColorSpace"},
{ 0x0038, "ImageAreaOffset"},
{ 0x0039, "RawImageSize"},
{ 0x003e, "PreviewImageBorders"},
{ 0x003f, "LensType"},
{ 0x0040, "SensitivityAdjust"},
{ 0x0041, "DigitalFilter"},
{ 0x0047, "Temperature"},
{ 0x0048, "AELock"},
{ 0x0049, "NoiseReduction"},
{ 0x004d, "FlashExposureCompensation"},
{ 0x004f, "ImageTone"},
{ 0x0050, "ColorTemperature"},
{ 0x005c, "ShakeReduction"},
{ 0x005d, "ShutterCount"},
{ 0x0069, "DynamicRangeExpansion"},
{ 0x0071, "HighISONoiseReduction"},
{ 0x0072, "AFAdjustment"},
{ 0x0200, "BlackPoint"},
{ 0x0201, "WhitePoint"},
{ 0x0205, "ShotInfo"},
{ 0x0206, "AEInfo"},
{ 0x0207, "LensInfo"},
{ 0x0208, "FlashInfo"},
{ 0x0209, "AEMeteringSegments"},
{ 0x020a, "FlashADump"},
{ 0x020b, "FlashBDump"},
{ 0x020d, "WB_RGGBLevelsDaylight"},
{ 0x020e, "WB_RGGBLevelsShade"},
{ 0x020f, "WB_RGGBLevelsCloudy"},
{ 0x0210, "WB_RGGBLevelsTungsten"},
{ 0x0211, "WB_RGGBLevelsFluorescentD"},
{ 0x0212, "WB_RGGBLevelsFluorescentN"},
{ 0x0213, "WB_RGGBLevelsFluorescentW"},
{ 0x0214, "WB_RGGBLevelsFlash"},
{ 0x0215, "CameraInfo"},
{ 0x0216, "BatteryInfo"},
{ 0x021f, "AFInfo"},
{ 0x0222, "ColorInfo"},
{ 0x0229, "SerialNumber"},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_MINOLTA = {
{ 0x0000, "Version"},
{ 0x0001, "CameraSettingsStdOld"},
{ 0x0003, "CameraSettingsStdNew"},
{ 0x0004, "CameraSettings7D"},
{ 0x0018, "ImageStabilizationData"},
{ 0x0020, "WBInfoA100"},
{ 0x0040, "CompressedImageSize"},
{ 0x0081, "Thumbnail"},
{ 0x0088, "ThumbnailOffset"},
{ 0x0089, "ThumbnailLength"},
{ 0x0100, "SceneMode"},
{ 0x0101, "ColorMode"},
{ 0x0102, "Quality"},
{ 0x0104, "FlashExposureComp"},
{ 0x0105, "Teleconverter"},
{ 0x0107, "ImageStabilization"},
{ 0x0109, "RawAndJpgRecording"},
{ 0x010a, "ZoneMatching"},
{ 0x010b, "ColorTemperature"},
{ 0x010c, "LensID"},
{ 0x0111, "ColorCompensationFilter"},
{ 0x0112, "WhiteBalanceFineTune"},
{ 0x0113, "ImageStabilizationA100"},
{ 0x0114, "CameraSettings5D"},
{ 0x0115, "WhiteBalance"},
{ 0x0e00, "PrintIM"},
{ 0x0f00, "CameraSettingsZ1"},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_SIGMA = {
{ 0x0002, "SerialNumber"},
{ 0x0003, "DriveMode"},
{ 0x0004, "ResolutionMode"},
{ 0x0005, "AutofocusMode"},
{ 0x0006, "FocusSetting"},
{ 0x0007, "WhiteBalance"},
{ 0x0008, "ExposureMode"},
{ 0x0009, "MeteringMode"},
{ 0x000a, "LensRange"},
{ 0x000b, "ColorSpace"},
{ 0x000c, "Exposure"},
{ 0x000d, "Contrast"},
{ 0x000e, "Shadow"},
{ 0x000f, "Highlight"},
{ 0x0010, "Saturation"},
{ 0x0011, "Sharpness"},
{ 0x0012, "FillLight"},
{ 0x0014, "ColorAdjustment"},
{ 0x0015, "AdjustmentMode"},
{ 0x0016, "Quality"},
{ 0x0017, "Firmware"},
{ 0x0018, "Software"},
{ 0x0019, "AutoBracket"},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_KYOCERA = {
{ 0x0001, "FormatThumbnail"},
{ 0x0E00, "PrintImageMatchingInfo"},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_RICOH = {
{ 0x0001, "MakerNoteDataType"},
{ 0x0002, "Version"},
{ 0x0E00, "PrintImageMatchingInfo"},
{ 0x2001, "RicohCameraInfoMakerNoteSubIFD"},
TAG_TABLE_END
};
typedef enum mn_byte_order_t {
MN_ORDER_INTEL = 0,
MN_ORDER_MOTOROLA = 1,
MN_ORDER_NORMAL
} mn_byte_order_t;
typedef enum mn_offset_mode_t {
MN_OFFSET_NORMAL,
MN_OFFSET_MAKER
} mn_offset_mode_t;
typedef struct {
tag_table_type tag_table;
char * make;
char * id_string;
int id_string_len;
int offset;
mn_byte_order_t byte_order;
mn_offset_mode_t offset_mode;
} maker_note_type;
/* Remember to update PHP_MINFO if updated */
static const maker_note_type maker_note_array[] = {
{ tag_table_VND_CANON, "Canon", NULL, 0, 0, MN_ORDER_INTEL, MN_OFFSET_NORMAL},
{ tag_table_VND_CASIO, "CASIO", NULL, 0, 0, MN_ORDER_MOTOROLA, MN_OFFSET_NORMAL},
{ tag_table_VND_FUJI, "FUJIFILM", "FUJIFILM\x0C\x00\x00\x00", 12, 12, MN_ORDER_INTEL, MN_OFFSET_MAKER},
{ tag_table_VND_NIKON, "NIKON", "Nikon\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
{ tag_table_VND_NIKON_990, "NIKON", NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
{ tag_table_VND_OLYMPUS, "OLYMPUS OPTICAL CO.,LTD", "OLYMP\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
{ tag_table_VND_SAMSUNG, "SAMSUNG", NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
{ tag_table_VND_PANASONIC, "Panasonic", "Panasonic\x00\x00\x00", 12, 12, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
{ tag_table_VND_DJI, "DJI", NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
{ tag_table_VND_SONY, "SONY", "SONY DSC \x00\x00\x00", 12, 12, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
{ tag_table_VND_SONY, "SONY", NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
{ tag_table_VND_PENTAX, "PENTAX", "AOC\x00", 6, 6, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
{ tag_table_VND_MINOLTA, "Minolta, KONICA MINOLTA", NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
{ tag_table_VND_SIGMA, "SIGMA, FOVEON", "SIGMA\x00\x00\x00", 10, 10, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
{ tag_table_VND_SIGMA, "SIGMA, FOVEON", "FOVEON\x00\x00\x00", 10, 10, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
{ tag_table_VND_KYOCERA, "KYOCERA, CONTAX", "KYOCERA \x00\x00\x00", 22, 22, MN_ORDER_NORMAL, MN_OFFSET_MAKER},
{ tag_table_VND_RICOH, "RICOH", "Ricoh", 5, 5, MN_ORDER_MOTOROLA, MN_OFFSET_NORMAL},
{ tag_table_VND_RICOH, "RICOH", "RICOH", 5, 5, MN_ORDER_MOTOROLA, MN_OFFSET_NORMAL},
/* These re-uses existing formats */
{ tag_table_VND_OLYMPUS, "AGFA", "AGFA \x00\x01", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
{ tag_table_VND_OLYMPUS, "EPSON", "EPSON\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL}
};
/* }}} */
static HashTable *exif_make_tag_ht(tag_info_type *tag_table)
{
HashTable *ht = malloc(sizeof(HashTable));
zend_hash_init(ht, 0, NULL, NULL, 1);
while (tag_table->Tag != TAG_END_OF_LIST) {
if (!zend_hash_index_add_ptr(ht, tag_table->Tag, tag_table->Desc)) {
zend_error(E_CORE_ERROR, "Duplicate tag %x", tag_table->Tag);
}
tag_table++;
}
return ht;
}
static void exif_tag_ht_dtor(zval *zv)
{
HashTable *ht = Z_PTR_P(zv);
zend_hash_destroy(ht);
free(ht);
}
static HashTable *exif_get_tag_ht(tag_info_type *tag_table)
{
HashTable *ht;
if (!EXIF_G(tag_table_cache)) {
EXIF_G(tag_table_cache) = malloc(sizeof(HashTable));
zend_hash_init(EXIF_G(tag_table_cache), 0, NULL, exif_tag_ht_dtor, 1);
}
ht = zend_hash_index_find_ptr(EXIF_G(tag_table_cache), (uintptr_t) tag_table);
if (ht) {
return ht;
}
ht = exif_make_tag_ht(tag_table);
zend_hash_index_add_new_ptr(EXIF_G(tag_table_cache), (uintptr_t) tag_table, ht);
return ht;
}
/* {{{ exif_get_tagname
Get headername for tag_num or NULL if not defined */
static char *exif_get_tagname(int tag_num, tag_table_type tag_table)
{
return zend_hash_index_find_ptr(exif_get_tag_ht(tag_table), tag_num);
}
/* }}} */
static char *exif_get_tagname_debug(int tag_num, tag_table_type tag_table)
{
char *desc = zend_hash_index_find_ptr(exif_get_tag_ht(tag_table), tag_num);
if (desc) {
return desc;
}
return "UndefinedTag";
}
static char *exif_get_tagname_key(int tag_num, char *buf, size_t buf_size, tag_table_type tag_table)
{
char *desc = zend_hash_index_find_ptr(exif_get_tag_ht(tag_table), tag_num);
if (desc) {
return desc;
}
snprintf(buf, buf_size, "UndefinedTag:0x%04X", tag_num);
return buf;
}
/* {{{ exif_char_dump
* Do not use! This is a debug function... */
#ifdef EXIF_DEBUG
static char* exif_char_dump(char * addr, int len, int offset)
{
static char buf[4096+1];
static char tmp[20];
int c, i, p=0, n = 5+31;
p += slprintf(buf+p, sizeof(buf)-p, "\nDump Len: %08X (%d)", len, len);
if (len) {
for(i=0; i<len+15 && p+n<=sizeof(buf); i++) {
if (i%16==0) {
p += slprintf(buf+p, sizeof(buf)-p, "\n%08X: ", i+offset);
}
if (i<len) {
c = *((unsigned char *)addr++);
p += slprintf(buf+p, sizeof(buf)-p, "%02X ", c);
tmp[i%16] = c>=32 ? c : '.';
tmp[(i%16)+1] = '\0';
} else {
p += slprintf(buf+p, sizeof(buf)-p, " ");
}
if (i%16==15) {
p += slprintf(buf+p, sizeof(buf)-p, " %s", tmp);
if (i>=len) {
break;
}
}
}
}
buf[sizeof(buf)-1] = '\0';
return buf;
}
#endif
/* }}} */
/* {{{ php_jpg_get16
Get 16 bits motorola order (always) for jpeg header stuff.
*/
static int php_jpg_get16(void *value)
{
return (((uchar *)value)[0] << 8) | ((uchar *)value)[1];
}
/* }}} */
/* {{{ php_ifd_get16u
* Convert a 16 bit unsigned value from file's native byte order */
static int php_ifd_get16u(void *value, int motorola_intel)
{
if (motorola_intel) {
return (((uchar *)value)[0] << 8) | ((uchar *)value)[1];
} else {
return (((uchar *)value)[1] << 8) | ((uchar *)value)[0];
}
}
/* }}} */
/* {{{ php_ifd_get16s
* Convert a 16 bit signed value from file's native byte order */
static signed short php_ifd_get16s(void *value, int motorola_intel)
{
return (signed short)php_ifd_get16u(value, motorola_intel);
}
/* }}} */
/* {{{ php_ifd_get32u
* Convert a 32 bit unsigned value from file's native byte order */
static unsigned php_ifd_get32u(void *void_value, int motorola_intel)
{
uchar *value = (uchar *) void_value;
if (motorola_intel) {
return ((unsigned)value[0] << 24)
| ((unsigned)value[1] << 16)
| ((unsigned)value[2] << 8 )
| ((unsigned)value[3] );
} else {
return ((unsigned)value[3] << 24)
| ((unsigned)value[2] << 16)
| ((unsigned)value[1] << 8 )
| ((unsigned)value[0] );
}
}
/* }}} */
/* {{{ php_ifd_get64u
* Convert a 64 bit unsigned value from file's native byte order */
static uint64_t php_ifd_get64u(void *void_value, int motorola_intel)
{
uchar *value = (uchar *) void_value;
if (motorola_intel) {
return ((uint64_t)value[0] << 56)
| ((uint64_t)value[1] << 48)
| ((uint64_t)value[2] << 40)
| ((uint64_t)value[3] << 32)
| ((uint64_t)value[4] << 24)
| ((uint64_t)value[5] << 16)
| ((uint64_t)value[6] << 8 )
| ((uint64_t)value[7] );
} else {
return ((uint64_t)value[7] << 56)
| ((uint64_t)value[6] << 48)
| ((uint64_t)value[5] << 40)
| ((uint64_t)value[4] << 32)
| ((uint64_t)value[3] << 24)
| ((uint64_t)value[2] << 16)
| ((uint64_t)value[1] << 8 )
| ((uint64_t)value[0] );
}
}
/* }}} */
/* {{{ php_ifd_get32u
* Convert a 32 bit signed value from file's native byte order */
static unsigned php_ifd_get32s(void *value, int motorola_intel)
{
return (int) php_ifd_get32u(value, motorola_intel);
}
/* }}} */
/* {{{ php_ifd_set16u
* Write 16 bit unsigned value to data */
static void php_ifd_set16u(char *data, unsigned int value, int motorola_intel)
{
if (motorola_intel) {
data[0] = (value & 0xFF00) >> 8;
data[1] = (value & 0x00FF);
} else {
data[1] = (value & 0xFF00) >> 8;
data[0] = (value & 0x00FF);
}
}
/* }}} */
/* {{{ php_ifd_set32u
* Convert a 32 bit unsigned value from file's native byte order */
static void php_ifd_set32u(char *data, size_t value, int motorola_intel)
{
if (motorola_intel) {
data[0] = (value & 0xFF000000) >> 24;
data[1] = (char) ((value & 0x00FF0000) >> 16);
data[2] = (value & 0x0000FF00) >> 8;
data[3] = (value & 0x000000FF);
} else {
data[3] = (value & 0xFF000000) >> 24;
data[2] = (char) ((value & 0x00FF0000) >> 16);
data[1] = (value & 0x0000FF00) >> 8;
data[0] = (value & 0x000000FF);
}
}
/* }}} */
static float php_ifd_get_float(char *data) {
union { uint32_t i; float f; } u;
u.i = php_ifd_get32u(data, 0);
return u.f;
}
static double php_ifd_get_double(char *data) {
union { uint64_t i; double f; } u;
u.i = php_ifd_get64u(data, 0);
return u.f;
}
#ifdef EXIF_DEBUG
char * exif_dump_data(int *dump_free, int format, int components, int motorola_intel, char *value_ptr) /* {{{ */
{
char *dump;
int len;
*dump_free = 0;
if (format == TAG_FMT_STRING) {
return value_ptr ? value_ptr : "<no data>";
}
if (format == TAG_FMT_UNDEFINED) {
return "<undefined>";
}
if (format == TAG_FMT_IFD) {
return "";
}
if (format == TAG_FMT_SINGLE || format == TAG_FMT_DOUBLE) {
return "<not implemented>";
}
*dump_free = 1;
if (components > 1) {
len = spprintf(&dump, 0, "(%d) {", components);
} else {
len = spprintf(&dump, 0, "{");
}
while(components > 0) {
switch(format) {
case TAG_FMT_BYTE:
case TAG_FMT_UNDEFINED:
case TAG_FMT_STRING:
case TAG_FMT_SBYTE:
dump = erealloc(dump, len + 4 + 1);
snprintf(dump + len, 4 + 1, "0x%02X", *value_ptr);
len += 4;
value_ptr++;
break;
case TAG_FMT_USHORT:
case TAG_FMT_SSHORT:
dump = erealloc(dump, len + 6 + 1);
snprintf(dump + len, 6 + 1, "0x%04X", php_ifd_get16s(value_ptr, motorola_intel));
len += 6;
value_ptr += 2;
break;
case TAG_FMT_ULONG:
case TAG_FMT_SLONG:
dump = erealloc(dump, len + 6 + 1);
snprintf(dump + len, 6 + 1, "0x%04X", php_ifd_get32s(value_ptr, motorola_intel));
len += 6;
value_ptr += 4;
break;
case TAG_FMT_URATIONAL:
case TAG_FMT_SRATIONAL:
dump = erealloc(dump, len + 13 + 1);
snprintf(dump + len, 13 + 1, "0x%04X/0x%04X", php_ifd_get32s(value_ptr, motorola_intel), php_ifd_get32s(value_ptr+4, motorola_intel));
len += 13;
value_ptr += 8;
break;
}
if (components > 0) {
dump = erealloc(dump, len + 2 + 1);
snprintf(dump + len, 2 + 1, ", ");
len += 2;
components--;
} else{
break;
}
}
dump = erealloc(dump, len + 1 + 1);
snprintf(dump + len, 1 + 1, "}");
return dump;
}
/* }}} */
#endif
/* {{{ exif_convert_any_format
* Evaluate number, be it int, rational, or float from directory. */
static double exif_convert_any_format(void *value, int format, int motorola_intel)
{
int s_den;
unsigned u_den;
switch(format) {
case TAG_FMT_SBYTE: return *(signed char *)value;
case TAG_FMT_BYTE: return *(uchar *)value;
case TAG_FMT_USHORT: return php_ifd_get16u(value, motorola_intel);
case TAG_FMT_ULONG: return php_ifd_get32u(value, motorola_intel);
case TAG_FMT_URATIONAL:
u_den = php_ifd_get32u(4+(char *)value, motorola_intel);
if (u_den == 0) {
return 0;
} else {
return (double)php_ifd_get32u(value, motorola_intel) / u_den;
}
case TAG_FMT_SRATIONAL:
s_den = php_ifd_get32s(4+(char *)value, motorola_intel);
if (s_den == 0) {
return 0;
} else {
return (double)php_ifd_get32s(value, motorola_intel) / s_den;
}
case TAG_FMT_SSHORT: return (signed short)php_ifd_get16u(value, motorola_intel);
case TAG_FMT_SLONG: return php_ifd_get32s(value, motorola_intel);
/* Not sure if this is correct (never seen float used in Exif format) */
case TAG_FMT_SINGLE:
#ifdef EXIF_DEBUG
php_error_docref(NULL, E_NOTICE, "Found value of type single");
#endif
return (double) php_ifd_get_float(value);
case TAG_FMT_DOUBLE:
#ifdef EXIF_DEBUG
php_error_docref(NULL, E_NOTICE, "Found value of type double");
#endif
return php_ifd_get_double(value);
}
return 0;
}
/* }}} */
/* {{{ exif_rewrite_tag_format_to_unsigned
* Rewrite format tag so that it specifies an unsigned type for a tag */
static int exif_rewrite_tag_format_to_unsigned(int format)
{
switch(format) {
case TAG_FMT_SBYTE: return TAG_FMT_BYTE;
case TAG_FMT_SRATIONAL: return TAG_FMT_URATIONAL;
case TAG_FMT_SSHORT: return TAG_FMT_USHORT;
case TAG_FMT_SLONG: return TAG_FMT_ULONG;
}
return format;
}
/* }}} */
/* Use saturation for out of bounds values to avoid UB */
static size_t float_to_size_t(float x) {
if (x < 0.0f || zend_isnan(x)) {
return 0;
} else if (x > (float) SIZE_MAX) {
return SIZE_MAX;
} else {
return (size_t) x;
}
}
static size_t double_to_size_t(double x) {
if (x < 0.0 || zend_isnan(x)) {
return 0;
} else if (x > (double) SIZE_MAX) {
return SIZE_MAX;
} else {
return (size_t) x;
}
}
/* {{{ exif_convert_any_to_int
* Evaluate number, be it int, rational, or float from directory. */
static size_t exif_convert_any_to_int(void *value, int format, int motorola_intel)
{
switch (format) {
case TAG_FMT_SBYTE: return *(signed char *)value;
case TAG_FMT_BYTE: return *(uchar *)value;
case TAG_FMT_USHORT: return php_ifd_get16u(value, motorola_intel);
case TAG_FMT_ULONG: return php_ifd_get32u(value, motorola_intel);
case TAG_FMT_URATIONAL: {
unsigned u_den = php_ifd_get32u(4+(char *)value, motorola_intel);
if (u_den == 0) {
return 0;
} else {
return php_ifd_get32u(value, motorola_intel) / u_den;
}
}
case TAG_FMT_SRATIONAL: {
int s_num = php_ifd_get32s(value, motorola_intel);
int s_den = php_ifd_get32s(4+(char *)value, motorola_intel);
if (s_den == 0) {
return 0;
} else if (s_num == INT_MIN && s_den == -1) {
return INT_MAX;
} else {
return s_num / s_den;
}
}
case TAG_FMT_SSHORT: return php_ifd_get16u(value, motorola_intel);
case TAG_FMT_SLONG: return php_ifd_get32s(value, motorola_intel);
/* Not sure if this is correct (never seen float used in Exif format) */
case TAG_FMT_SINGLE:
#ifdef EXIF_DEBUG
php_error_docref(NULL, E_NOTICE, "Found value of type single");
#endif
return float_to_size_t(php_ifd_get_float(value));
case TAG_FMT_DOUBLE:
#ifdef EXIF_DEBUG
php_error_docref(NULL, E_NOTICE, "Found value of type double");
#endif
return double_to_size_t(php_ifd_get_double(value));
}
return 0;
}
/* }}} */
/* {{{ struct image_info_value, image_info_list */
#ifndef WORD
#define WORD unsigned short
#endif
#ifndef DWORD
#define DWORD unsigned int
#endif
typedef struct {
int num;
int den;
} signed_rational;
typedef struct {
unsigned int num;
unsigned int den;
} unsigned_rational;
typedef union _image_info_value {
char *s;
unsigned u;
int i;
float f;
double d;
signed_rational sr;
unsigned_rational ur;
union _image_info_value *list;
} image_info_value;
typedef struct {
WORD tag;
WORD format;
DWORD length;
DWORD dummy; /* value ptr of tiff directory entry */
char *name;
image_info_value value;
} image_info_data;
typedef struct {
int count;
int alloc_count;
image_info_data *list;
} image_info_list;
/* }}} */
/* {{{ exif_get_sectionname
Returns the name of a section
*/
#define SECTION_FILE 0
#define SECTION_COMPUTED 1
#define SECTION_ANY_TAG 2
#define SECTION_IFD0 3
#define SECTION_THUMBNAIL 4
#define SECTION_COMMENT 5
#define SECTION_APP0 6
#define SECTION_EXIF 7
#define SECTION_FPIX 8
#define SECTION_GPS 9
#define SECTION_INTEROP 10
#define SECTION_APP12 11
#define SECTION_WINXP 12
#define SECTION_MAKERNOTE 13
#define SECTION_COUNT 14
#define FOUND_FILE (1<<SECTION_FILE)
#define FOUND_COMPUTED (1<<SECTION_COMPUTED)
#define FOUND_ANY_TAG (1<<SECTION_ANY_TAG)
#define FOUND_IFD0 (1<<SECTION_IFD0)
#define FOUND_THUMBNAIL (1<<SECTION_THUMBNAIL)
#define FOUND_COMMENT (1<<SECTION_COMMENT)
#define FOUND_APP0 (1<<SECTION_APP0)
#define FOUND_EXIF (1<<SECTION_EXIF)
#define FOUND_FPIX (1<<SECTION_FPIX)
#define FOUND_GPS (1<<SECTION_GPS)
#define FOUND_INTEROP (1<<SECTION_INTEROP)
#define FOUND_APP12 (1<<SECTION_APP12)
#define FOUND_WINXP (1<<SECTION_WINXP)
#define FOUND_MAKERNOTE (1<<SECTION_MAKERNOTE)
static char *exif_get_sectionname(int section)
{
switch(section) {
case SECTION_FILE: return "FILE";
case SECTION_COMPUTED: return "COMPUTED";
case SECTION_ANY_TAG: return "ANY_TAG";
case SECTION_IFD0: return "IFD0";
case SECTION_THUMBNAIL: return "THUMBNAIL";
case SECTION_COMMENT: return "COMMENT";
case SECTION_APP0: return "APP0";
case SECTION_EXIF: return "EXIF";
case SECTION_FPIX: return "FPIX";
case SECTION_GPS: return "GPS";
case SECTION_INTEROP: return "INTEROP";
case SECTION_APP12: return "APP12";
case SECTION_WINXP: return "WINXP";
case SECTION_MAKERNOTE: return "MAKERNOTE";
}
return "";
}
static tag_table_type exif_get_tag_table(int section)
{
switch(section) {
case SECTION_FILE: return &tag_table_IFD[0];
case SECTION_COMPUTED: return &tag_table_IFD[0];
case SECTION_ANY_TAG: return &tag_table_IFD[0];
case SECTION_IFD0: return &tag_table_IFD[0];
case SECTION_THUMBNAIL: return &tag_table_IFD[0];
case SECTION_COMMENT: return &tag_table_IFD[0];
case SECTION_APP0: return &tag_table_IFD[0];
case SECTION_EXIF: return &tag_table_IFD[0];
case SECTION_FPIX: return &tag_table_IFD[0];
case SECTION_GPS: return &tag_table_GPS[0];
case SECTION_INTEROP: return &tag_table_IOP[0];
case SECTION_APP12: return &tag_table_IFD[0];
case SECTION_WINXP: return &tag_table_IFD[0];
}
return &tag_table_IFD[0];
}
/* }}} */
/* {{{ exif_get_sectionlist
Return list of sectionnames specified by sectionlist. Return value must be freed
*/
static char *exif_get_sectionlist(int sectionlist)
{
int i, len, ml = 0;
char *sections;
for(i=0; i<SECTION_COUNT; i++) {
ml += strlen(exif_get_sectionname(i))+2;
}
sections = safe_emalloc(ml, 1, 1);
sections[0] = '\0';
len = 0;
for(i=0; i<SECTION_COUNT; i++) {
if (sectionlist&(1<<i)) {
snprintf(sections+len, ml-len, "%s, ", exif_get_sectionname(i));
len = strlen(sections);
}
}
if (len>2)
sections[len-2] = '\0';
return sections;
}
/* }}} */
/* {{{ struct image_info_type
This structure stores Exif header image elements in a simple manner
Used to store camera data as extracted from the various ways that it can be
stored in a nexif header
*/
typedef struct {
int type;
size_t size;
uchar *data;
} file_section;
typedef struct {
int count;
int alloc_count;
file_section *list;
} file_section_list;
typedef struct {
image_filetype filetype;
size_t width, height;
size_t size;
size_t offset;
char *data;
} thumbnail_data;
typedef struct {
char *value;
size_t size;
int tag;
} xp_field_type;
typedef struct {
int count;
xp_field_type *list;
} xp_field_list;
/* This structure is used to store a section of a Jpeg file. */
typedef struct {
php_stream *infile;
char *FileName;
time_t FileDateTime;
size_t FileSize;
image_filetype FileType;
int Height, Width;
int IsColor;
char *make;
char *model;
float ApertureFNumber;
float ExposureTime;
double FocalplaneUnits;
float CCDWidth;
double FocalplaneXRes;
size_t ExifImageWidth;
float FocalLength;
float Distance;
int motorola_intel; /* 1 Motorola; 0 Intel */
char *UserComment;
int UserCommentLength;
char *UserCommentEncoding;
char *encode_unicode;
char *decode_unicode_be;
char *decode_unicode_le;
char *encode_jis;
char *decode_jis_be;
char *decode_jis_le;
char *Copyright;/* EXIF standard defines Copyright as "<Photographer> [ '\0' <Editor> ] ['\0']" */
char *CopyrightPhotographer;
char *CopyrightEditor;
xp_field_list xp_fields;
thumbnail_data Thumbnail;
/* other */
int sections_found; /* FOUND_<marker> */
image_info_list info_list[SECTION_COUNT];
/* for parsing */
int read_thumbnail;
int read_all;
int ifd_nesting_level;
int num_errors;
/* internal */
file_section_list file;
} image_info_type;
/* }}} */
// EXIF_DEBUG can produce lots of messages
#ifndef EXIF_DEBUG
#define EXIF_MAX_ERRORS 10
#else
#define EXIF_MAX_ERRORS 100000
#endif
/* {{{ exif_error_docref */
static void exif_error_docref(const char *docref EXIFERR_DC, image_info_type *ImageInfo, int type, const char *format, ...)
{
va_list args;
if (ImageInfo) {
if (++ImageInfo->num_errors > EXIF_MAX_ERRORS) {
if (ImageInfo->num_errors == EXIF_MAX_ERRORS+1) {
php_error_docref(docref, type,
"Further exif parsing errors have been suppressed");
}
return;
}
}
va_start(args, format);
#ifdef EXIF_DEBUG
{
char *buf;
spprintf(&buf, 0, "%s(%ld): %s", _file, _line, format);
php_verror(docref, ImageInfo && ImageInfo->FileName ? ImageInfo->FileName:"", type, buf, args);
efree(buf);
}
#else
php_verror(docref, ImageInfo && ImageInfo->FileName ? ImageInfo->FileName:"", type, format, args);
#endif
va_end(args);
}
/* }}} */
/* {{{ jpeg_sof_info */
typedef struct {
int bits_per_sample;
size_t width;
size_t height;
int num_components;
} jpeg_sof_info;
/* }}} */
/* Base address for offset references, together with valid memory range.
* The valid range does not necessarily include the offset base. */
typedef struct {
char *offset_base;
char *valid_start; /* inclusive */
char *valid_end; /* exclusive */
} exif_offset_info;
static zend_always_inline zend_bool ptr_offset_overflows(char *ptr, size_t offset) {
return UINTPTR_MAX - (uintptr_t) ptr < offset;
}
static inline void exif_offset_info_init(
exif_offset_info *info, char *offset_base, char *valid_start, size_t valid_length) {
ZEND_ASSERT(!ptr_offset_overflows(valid_start, valid_length));
#ifdef __SANITIZE_ADDRESS__
ZEND_ASSERT(!__asan_region_is_poisoned(valid_start, valid_length));
#endif
info->offset_base = offset_base;
info->valid_start = valid_start;
info->valid_end = valid_start + valid_length;
}
/* Try to get a pointer at offset_base+offset with length dereferenceable bytes. */
static inline char *exif_offset_info_try_get(
const exif_offset_info *info, size_t offset, size_t length) {
char *start, *end;
if (ptr_offset_overflows(info->offset_base, offset)) {
return NULL;
}
start = info->offset_base + offset;
if (ptr_offset_overflows(start, length)) {
return NULL;
}
end = start + length;
if (start < info->valid_start || end > info->valid_end) {
return NULL;
}
return start;
}
static inline zend_bool exif_offset_info_contains(
const exif_offset_info *info, char *start, size_t length) {
char *end;
if (ptr_offset_overflows(start, length)) {
return 0;
}
/* start and valid_start are both inclusive, end and valid_end are both exclusive,
* so we use >= and <= to do the checks, respectively. */
end = start + length;
return start >= info->valid_start && end <= info->valid_end;
}
#ifdef EXIF_DEBUG
static inline int exif_offset_info_length(const exif_offset_info *info)
{
return info->valid_end - info->valid_start;
}
#endif
/* {{{ exif_file_sections_add
Add a file_section to image_info
returns the used block or -1. if size>0 and data == NULL buffer of size is allocated
*/
static int exif_file_sections_add(image_info_type *ImageInfo, int type, size_t size, uchar *data)
{
int count = ImageInfo->file.count;
if (count == ImageInfo->file.alloc_count) {
int new_alloc_count = ImageInfo->file.alloc_count ? ImageInfo->file.alloc_count * 2 : 1;
ImageInfo->file.list = safe_erealloc(
ImageInfo->file.list, new_alloc_count, sizeof(file_section), 0);
ImageInfo->file.alloc_count = new_alloc_count;
}
ImageInfo->file.list[count].type = 0xFFFF;
ImageInfo->file.list[count].data = NULL;
ImageInfo->file.list[count].size = 0;
ImageInfo->file.count = count+1;
if (!size) {
data = NULL;
} else if (data == NULL) {
data = safe_emalloc(size, 1, 0);
}
ImageInfo->file.list[count].type = type;
ImageInfo->file.list[count].data = data;
ImageInfo->file.list[count].size = size;
return count;
}
/* }}} */
/* {{{ exif_file_sections_realloc
Reallocate a file section returns 0 on success and -1 on failure
*/
static int exif_file_sections_realloc(image_info_type *ImageInfo, int section_index, size_t size)
{
void *tmp;
/* This is not a malloc/realloc check. It is a plausibility check for the
* function parameters (requirements engineering).
*/
if (section_index >= ImageInfo->file.count) {
EXIF_ERRLOG_FSREALLOC(ImageInfo)
return -1;
}
tmp = safe_erealloc(ImageInfo->file.list[section_index].data, 1, size, 0);
ImageInfo->file.list[section_index].data = tmp;
ImageInfo->file.list[section_index].size = size;
return 0;
}
/* }}} */
/* {{{ exif_file_section_free
Discard all file_sections in ImageInfo
*/
static bool exif_file_sections_free(image_info_type *ImageInfo)
{
int i;
if (ImageInfo->file.count) {
for (i=0; i<ImageInfo->file.count; i++) {
EFREE_IF(ImageInfo->file.list[i].data);
}
}
EFREE_IF(ImageInfo->file.list);
ImageInfo->file.count = 0;
return true;
}
/* }}} */
static image_info_data *exif_alloc_image_info_data(image_info_list *info_list) {
if (info_list->count == info_list->alloc_count) {
int new_alloc_count = info_list->alloc_count ? info_list->alloc_count * 2 : 1;
info_list->list = safe_erealloc(
info_list->list, new_alloc_count, sizeof(image_info_data), 0);
info_list->alloc_count = new_alloc_count;
}
return &info_list->list[info_list->count++];
}
/* {{{ exif_iif_add_value
Add a value to image_info
*/
static void exif_iif_add_value(image_info_type *image_info, int section_index, char *name, int tag, int format, int length, void* value, size_t value_len, int motorola_intel)
{
size_t idex;
void *vptr, *vptr_end;
image_info_value *info_value;
image_info_data *info_data;
if (length < 0) {
return;
}
info_data = exif_alloc_image_info_data(&image_info->info_list[section_index]);
memset(info_data, 0, sizeof(image_info_data));
info_data->tag = tag;
info_data->format = format;
info_data->length = length;
info_data->name = estrdup(name);
info_value = &info_data->value;
switch (format) {
case TAG_FMT_STRING:
if (length > value_len) {
exif_error_docref("exif_iif_add_value" EXIFERR_CC, image_info, E_WARNING, "length > value_len: %d > %zu", length, value_len);
value = NULL;
}
if (value) {
length = (int)php_strnlen(value, length);
info_value->s = estrndup(value, length);
info_data->length = length;
} else {
info_data->length = 0;
info_value->s = estrdup("");
}
break;
default:
/* Standard says more types possible but skip them...
* but allow users to handle data if they know how to
* So not return but use type UNDEFINED
* return;
*/
info_data->tag = TAG_FMT_UNDEFINED;/* otherwise not freed from memory */
case TAG_FMT_SBYTE:
case TAG_FMT_BYTE:
/* in contrast to strings bytes do not need to allocate buffer for NULL if length==0 */
if (!length)
break;
case TAG_FMT_UNDEFINED:
if (length > value_len) {
exif_error_docref("exif_iif_add_value" EXIFERR_CC, image_info, E_WARNING, "length > value_len: %d > %zu", length, value_len);
value = NULL;
}
if (value) {
if (tag == TAG_MAKER_NOTE) {
length = (int) php_strnlen(value, length);
}
/* do not recompute length here */
info_value->s = estrndup(value, length);
info_data->length = length;
} else {
info_data->length = 0;
info_value->s = estrdup("");
}
break;
case TAG_FMT_USHORT:
case TAG_FMT_ULONG:
case TAG_FMT_URATIONAL:
case TAG_FMT_SSHORT:
case TAG_FMT_SLONG:
case TAG_FMT_SRATIONAL:
case TAG_FMT_SINGLE:
case TAG_FMT_DOUBLE:
if (length==0) {
break;
} else
if (length>1) {
info_value->list = safe_emalloc(length, sizeof(image_info_value), 0);
} else {
info_value = &info_data->value;
}
vptr_end = (char *) value + value_len;
for (idex=0,vptr=value; idex<(size_t)length; idex++,vptr=(char *) vptr + php_tiff_bytes_per_format[format]) {
if ((char *) vptr_end - (char *) vptr < php_tiff_bytes_per_format[format]) {
exif_error_docref("exif_iif_add_value" EXIFERR_CC, image_info, E_WARNING, "Value too short");
break;
}
if (length>1) {
info_value = &info_data->value.list[idex];
}
switch (format) {
case TAG_FMT_USHORT:
info_value->u = php_ifd_get16u(vptr, motorola_intel);
break;
case TAG_FMT_ULONG:
info_value->u = php_ifd_get32u(vptr, motorola_intel);
break;
case TAG_FMT_URATIONAL:
info_value->ur.num = php_ifd_get32u(vptr, motorola_intel);
info_value->ur.den = php_ifd_get32u(4+(char *)vptr, motorola_intel);
break;
case TAG_FMT_SSHORT:
info_value->i = php_ifd_get16s(vptr, motorola_intel);
break;
case TAG_FMT_SLONG:
info_value->i = php_ifd_get32s(vptr, motorola_intel);
break;
case TAG_FMT_SRATIONAL:
info_value->sr.num = php_ifd_get32u(vptr, motorola_intel);
info_value->sr.den = php_ifd_get32u(4+(char *)vptr, motorola_intel);
break;
case TAG_FMT_SINGLE:
#ifdef EXIF_DEBUG
php_error_docref(NULL, E_WARNING, "Found value of type single");
#endif
info_value->f = php_ifd_get_float(value);
break;
case TAG_FMT_DOUBLE:
#ifdef EXIF_DEBUG
php_error_docref(NULL, E_WARNING, "Found value of type double");
#endif
info_value->d = php_ifd_get_double(value);
break;
}
}
}
image_info->sections_found |= 1<<section_index;
}
/* }}} */
/* {{{ exif_iif_add_tag
Add a tag from IFD to image_info
*/
static void exif_iif_add_tag(image_info_type *image_info, int section_index, char *name, int tag, int format, size_t length, void* value, size_t value_len)
{
exif_iif_add_value(image_info, section_index, name, tag, format, (int)length, value, value_len, image_info->motorola_intel);
}
/* }}} */
/* {{{ exif_iif_add_int
Add an int value to image_info
*/
static void exif_iif_add_int(image_info_type *image_info, int section_index, char *name, int value)
{
image_info_data *info_data = exif_alloc_image_info_data(&image_info->info_list[section_index]);
info_data->tag = TAG_NONE;
info_data->format = TAG_FMT_SLONG;
info_data->length = 1;
info_data->name = estrdup(name);
info_data->value.i = value;
image_info->sections_found |= 1<<section_index;
}
/* }}} */
/* {{{ exif_iif_add_str
Add a string value to image_info MUST BE NUL TERMINATED
*/
static void exif_iif_add_str(image_info_type *image_info, int section_index, char *name, char *value)
{
if (value) {
image_info_data *info_data =
exif_alloc_image_info_data(&image_info->info_list[section_index]);
info_data->tag = TAG_NONE;
info_data->format = TAG_FMT_STRING;
info_data->length = 1;
info_data->name = estrdup(name);
info_data->value.s = estrdup(value);
image_info->sections_found |= 1<<section_index;
}
}
/* }}} */
/* {{{ exif_iif_add_fmt
Add a format string value to image_info MUST BE NUL TERMINATED
*/
static void exif_iif_add_fmt(image_info_type *image_info, int section_index, char *name, char *value, ...)
{
char *tmp;
va_list arglist;
va_start(arglist, value);
if (value) {
vspprintf(&tmp, 0, value, arglist);
exif_iif_add_str(image_info, section_index, name, tmp);
efree(tmp);
}
va_end(arglist);
}
/* }}} */
/* {{{ exif_iif_add_str
Add a string value to image_info MUST BE NUL TERMINATED
*/
static void exif_iif_add_buffer(image_info_type *image_info, int section_index, char *name, int length, char *value)
{
if (value) {
image_info_data *info_data =
exif_alloc_image_info_data(&image_info->info_list[section_index]);
info_data->tag = TAG_NONE;
info_data->format = TAG_FMT_UNDEFINED;
info_data->length = length;
info_data->name = estrdup(name);
info_data->value.s = safe_emalloc(length, 1, 1);
memcpy(info_data->value.s, value, length);
info_data->value.s[length] = 0;
image_info->sections_found |= 1<<section_index;
}
}
/* }}} */
/* {{{ exif_iif_free
Free memory allocated for image_info
*/
static void exif_iif_free(image_info_type *image_info, int section_index) {
int i;
void *f; /* faster */
if (image_info->info_list[section_index].count) {
for (i=0; i < image_info->info_list[section_index].count; i++) {
if ((f=image_info->info_list[section_index].list[i].name) != NULL) {
efree(f);
}
switch(image_info->info_list[section_index].list[i].format) {
case TAG_FMT_UNDEFINED:
case TAG_FMT_STRING:
case TAG_FMT_SBYTE:
case TAG_FMT_BYTE:
default:
if ((f=image_info->info_list[section_index].list[i].value.s) != NULL) {
efree(f);
}
break;
case TAG_FMT_USHORT:
case TAG_FMT_ULONG:
case TAG_FMT_URATIONAL:
case TAG_FMT_SSHORT:
case TAG_FMT_SLONG:
case TAG_FMT_SRATIONAL:
case TAG_FMT_SINGLE:
case TAG_FMT_DOUBLE:
/* nothing to do here */
if (image_info->info_list[section_index].list[i].length > 1) {
if ((f=image_info->info_list[section_index].list[i].value.list) != NULL) {
efree(f);
}
}
break;
}
}
}
EFREE_IF(image_info->info_list[section_index].list);
}
/* }}} */
/* {{{ add_assoc_image_info
* Add image_info to associative array value. */
static void add_assoc_image_info(zval *value, int sub_array, image_info_type *image_info, int section_index)
{
char buffer[64], uname[64];
int idx = 0, unknown = 0;
if (!image_info->info_list[section_index].count) {
return;
}
zval tmpi;
if (sub_array) {
array_init(&tmpi);
} else {
ZVAL_COPY_VALUE(&tmpi, value);
}
for (int i = 0; i<image_info->info_list[section_index].count; i++) {
image_info_data *info_data = &image_info->info_list[section_index].list[i];
image_info_value *info_value = &info_data->value;
const char *name = info_data->name;
if (!name) {
snprintf(uname, sizeof(uname), "%d", unknown++);
name = uname;
}
if (info_data->length == 0) {
add_assoc_null(&tmpi, name);
} else {
switch (info_data->format) {
default:
/* Standard says more types possible but skip them...
* but allow users to handle data if they know how to
* So not return but use type UNDEFINED
* return;
*/
case TAG_FMT_BYTE:
case TAG_FMT_SBYTE:
case TAG_FMT_UNDEFINED:
if (!info_value->s) {
add_assoc_stringl(&tmpi, name, "", 0);
} else {
add_assoc_stringl(&tmpi, name, info_value->s, info_data->length);
}
break;
case TAG_FMT_STRING: {
const char *val = info_value->s ? info_value->s : "";
if (section_index==SECTION_COMMENT) {
add_index_string(&tmpi, idx++, val);
} else {
add_assoc_string(&tmpi, name, val);
}
break;
}
case TAG_FMT_URATIONAL:
case TAG_FMT_SRATIONAL:
case TAG_FMT_USHORT:
case TAG_FMT_SSHORT:
case TAG_FMT_SINGLE:
case TAG_FMT_DOUBLE:
case TAG_FMT_ULONG:
case TAG_FMT_SLONG: {
/* now the rest, first see if it becomes an array */
zval array;
int l = info_data->length;
if (l > 1) {
array_init(&array);
}
for (int ap = 0; ap < l; ap++) {
if (l>1) {
info_value = &info_data->value.list[ap];
}
switch (info_data->format) {
case TAG_FMT_BYTE:
if (l>1) {
info_value = &info_data->value;
for (int b = 0; b < l; b++) {
add_index_long(&array, b, (int)(info_value->s[b]));
}
break;
}
case TAG_FMT_USHORT:
case TAG_FMT_ULONG:
if (l==1) {
add_assoc_long(&tmpi, name, (int)info_value->u);
} else {
add_index_long(&array, ap, (int)info_value->u);
}
break;
case TAG_FMT_URATIONAL:
snprintf(buffer, sizeof(buffer), "%u/%u", info_value->ur.num, info_value->ur.den);
if (l==1) {
add_assoc_string(&tmpi, name, buffer);
} else {
add_index_string(&array, ap, buffer);
}
break;
case TAG_FMT_SBYTE:
if (l>1) {
info_value = &info_data->value;
for (int b = 0; b < l; b++) {
add_index_long(&array, ap, (int)info_value->s[b]);
}
break;
}
case TAG_FMT_SSHORT:
case TAG_FMT_SLONG:
if (l==1) {
add_assoc_long(&tmpi, name, info_value->i);
} else {
add_index_long(&array, ap, info_value->i);
}
break;
case TAG_FMT_SRATIONAL:
snprintf(buffer, sizeof(buffer), "%i/%i", info_value->sr.num, info_value->sr.den);
if (l==1) {
add_assoc_string(&tmpi, name, buffer);
} else {
add_index_string(&array, ap, buffer);
}
break;
case TAG_FMT_SINGLE:
if (l==1) {
add_assoc_double(&tmpi, name, info_value->f);
} else {
add_index_double(&array, ap, info_value->f);
}
break;
case TAG_FMT_DOUBLE:
if (l==1) {
add_assoc_double(&tmpi, name, info_value->d);
} else {
add_index_double(&array, ap, info_value->d);
}
break;
}
}
if (l > 1) {
add_assoc_zval(&tmpi, name, &array);
}
break;
}
}
}
}
if (sub_array) {
add_assoc_zval(value, exif_get_sectionname(section_index), &tmpi);
}
}
/* }}} */
/* {{{ Markers
JPEG markers consist of one or more 0xFF bytes, followed by a marker
code byte (which is not an FF). Here are the marker codes of interest
in this program. (See jdmarker.c for a more complete list.)
*/
#define M_TEM 0x01 /* temp for arithmetic coding */
#define M_RES 0x02 /* reserved */
#define M_SOF0 0xC0 /* Start Of Frame N */
#define M_SOF1 0xC1 /* N indicates which compression process */
#define M_SOF2 0xC2 /* Only SOF0-SOF2 are now in common use */
#define M_SOF3 0xC3
#define M_DHT 0xC4
#define M_SOF5 0xC5 /* NB: codes C4 and CC are NOT SOF markers */
#define M_SOF6 0xC6
#define M_SOF7 0xC7
#define M_JPEG 0x08 /* reserved for extensions */
#define M_SOF9 0xC9
#define M_SOF10 0xCA
#define M_SOF11 0xCB
#define M_DAC 0xCC /* arithmetic table */
#define M_SOF13 0xCD
#define M_SOF14 0xCE
#define M_SOF15 0xCF
#define M_RST0 0xD0 /* restart segment */
#define M_RST1 0xD1
#define M_RST2 0xD2
#define M_RST3 0xD3
#define M_RST4 0xD4
#define M_RST5 0xD5
#define M_RST6 0xD6
#define M_RST7 0xD7
#define M_SOI 0xD8 /* Start Of Image (beginning of datastream) */
#define M_EOI 0xD9 /* End Of Image (end of datastream) */
#define M_SOS 0xDA /* Start Of Scan (begins compressed data) */
#define M_DQT 0xDB
#define M_DNL 0xDC
#define M_DRI 0xDD
#define M_DHP 0xDE
#define M_EXP 0xDF
#define M_APP0 0xE0 /* JPEG: 'JFIFF' AND (additional 'JFXX') */
#define M_EXIF 0xE1 /* Exif Attribute Information */
#define M_APP2 0xE2 /* Flash Pix Extension Data? */
#define M_APP3 0xE3
#define M_APP4 0xE4
#define M_APP5 0xE5
#define M_APP6 0xE6
#define M_APP7 0xE7
#define M_APP8 0xE8
#define M_APP9 0xE9
#define M_APP10 0xEA
#define M_APP11 0xEB
#define M_APP12 0xEC
#define M_APP13 0xED /* IPTC International Press Telecommunications Council */
#define M_APP14 0xEE /* Software, Copyright? */
#define M_APP15 0xEF
#define M_JPG0 0xF0
#define M_JPG1 0xF1
#define M_JPG2 0xF2
#define M_JPG3 0xF3
#define M_JPG4 0xF4
#define M_JPG5 0xF5
#define M_JPG6 0xF6
#define M_JPG7 0xF7
#define M_JPG8 0xF8
#define M_JPG9 0xF9
#define M_JPG10 0xFA
#define M_JPG11 0xFB
#define M_JPG12 0xFC
#define M_JPG13 0xFD
#define M_COM 0xFE /* COMment */
#define M_PSEUDO 0x123 /* Extra value. */
/* }}} */
/* {{{ exif_process_COM
Process a COM marker.
We want to print out the marker contents as legible text;
we must guard against random junk and varying newline representations.
*/
static void exif_process_COM (image_info_type *image_info, char *value, size_t length)
{
exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length-2, value+2, length-2);
}
/* }}} */
/* {{{ exif_process_SOFn
* Process a SOFn marker. This is useful for the image dimensions */
static void exif_process_SOFn (uchar *Data, int marker, jpeg_sof_info *result)
{
/* 0xFF SOSn SectLen(2) Bits(1) Height(2) Width(2) Channels(1) 3*Channels (1) */
result->bits_per_sample = Data[2];
result->height = php_jpg_get16(Data+3);
result->width = php_jpg_get16(Data+5);
result->num_components = Data[7];
}
/* }}} */
/* forward declarations */
static bool exif_process_IFD_in_JPEG(image_info_type *ImageInfo, char *dir_start, const exif_offset_info *info, size_t displacement, int section_index, int tag);
static bool exif_process_IFD_TAG(image_info_type *ImageInfo, char *dir_entry, const exif_offset_info *info, size_t displacement, int section_index, int ReadNextIFD, tag_table_type tag_table);
/* {{{ exif_get_markername
Get name of marker */
#ifdef EXIF_DEBUG
static char * exif_get_markername(int marker)
{
switch(marker) {
case 0xC0: return "SOF0";
case 0xC1: return "SOF1";
case 0xC2: return "SOF2";
case 0xC3: return "SOF3";
case 0xC4: return "DHT";
case 0xC5: return "SOF5";
case 0xC6: return "SOF6";
case 0xC7: return "SOF7";
case 0xC9: return "SOF9";
case 0xCA: return "SOF10";
case 0xCB: return "SOF11";
case 0xCD: return "SOF13";
case 0xCE: return "SOF14";
case 0xCF: return "SOF15";
case 0xD8: return "SOI";
case 0xD9: return "EOI";
case 0xDA: return "SOS";
case 0xDB: return "DQT";
case 0xDC: return "DNL";
case 0xDD: return "DRI";
case 0xDE: return "DHP";
case 0xDF: return "EXP";
case 0xE0: return "APP0";
case 0xE1: return "EXIF";
case 0xE2: return "FPIX";
case 0xE3: return "APP3";
case 0xE4: return "APP4";
case 0xE5: return "APP5";
case 0xE6: return "APP6";
case 0xE7: return "APP7";
case 0xE8: return "APP8";
case 0xE9: return "APP9";
case 0xEA: return "APP10";
case 0xEB: return "APP11";
case 0xEC: return "APP12";
case 0xED: return "APP13";
case 0xEE: return "APP14";
case 0xEF: return "APP15";
case 0xF0: return "JPG0";
case 0xFD: return "JPG13";
case 0xFE: return "COM";
case 0x01: return "TEM";
}
return "Unknown";
}
#endif
/* }}} */
/* {{{ Get headername for index or false if not defined */
PHP_FUNCTION(exif_tagname)
{
zend_long tag;
char *szTemp;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &tag) == FAILURE) {
RETURN_THROWS();
}
szTemp = exif_get_tagname(tag, tag_table_IFD);
if (tag < 0 || !szTemp) {
RETURN_FALSE;
}
RETURN_STRING(szTemp);
}
/* }}} */
/* {{{ exif_ifd_make_value
* Create a value for an ifd from an info_data pointer */
static void* exif_ifd_make_value(image_info_data *info_data, int motorola_intel) {
size_t byte_count;
char *value_ptr, *data_ptr;
size_t i;
image_info_value *info_value;
byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
value_ptr = safe_emalloc(max(byte_count, 4), 1, 0);
memset(value_ptr, 0, 4);
if (!info_data->length) {
return value_ptr;
}
if (info_data->format == TAG_FMT_UNDEFINED || info_data->format == TAG_FMT_STRING
|| (byte_count>1 && (info_data->format == TAG_FMT_BYTE || info_data->format == TAG_FMT_SBYTE))
) {
memmove(value_ptr, info_data->value.s, byte_count);
return value_ptr;
} else if (info_data->format == TAG_FMT_BYTE) {
*value_ptr = info_data->value.u;
return value_ptr;
} else if (info_data->format == TAG_FMT_SBYTE) {
*value_ptr = info_data->value.i;
return value_ptr;
} else {
data_ptr = value_ptr;
for(i=0; i<info_data->length; i++) {
if (info_data->length==1) {
info_value = &info_data->value;
} else {
info_value = &info_data->value.list[i];
}
switch(info_data->format) {
case TAG_FMT_USHORT:
php_ifd_set16u(data_ptr, info_value->u, motorola_intel);
data_ptr += 2;
break;
case TAG_FMT_ULONG:
php_ifd_set32u(data_ptr, info_value->u, motorola_intel);
data_ptr += 4;
break;
case TAG_FMT_SSHORT:
php_ifd_set16u(data_ptr, info_value->i, motorola_intel);
data_ptr += 2;
break;
case TAG_FMT_SLONG:
php_ifd_set32u(data_ptr, info_value->i, motorola_intel);
data_ptr += 4;
break;
case TAG_FMT_URATIONAL:
php_ifd_set32u(data_ptr, info_value->sr.num, motorola_intel);
php_ifd_set32u(data_ptr+4, info_value->sr.den, motorola_intel);
data_ptr += 8;
break;
case TAG_FMT_SRATIONAL:
php_ifd_set32u(data_ptr, info_value->ur.num, motorola_intel);
php_ifd_set32u(data_ptr+4, info_value->ur.den, motorola_intel);
data_ptr += 8;
break;
case TAG_FMT_SINGLE:
memmove(data_ptr, &info_value->f, 4);
data_ptr += 4;
break;
case TAG_FMT_DOUBLE:
memmove(data_ptr, &info_value->d, 8);
data_ptr += 8;
break;
}
}
}
return value_ptr;
}
/* }}} */
/* {{{ exif_thumbnail_build
* Check and build thumbnail */
static void exif_thumbnail_build(image_info_type *ImageInfo) {
size_t new_size, new_move, new_value;
char *new_data;
void *value_ptr;
int i, byte_count;
image_info_list *info_list;
image_info_data *info_data;
if (!ImageInfo->read_thumbnail || !ImageInfo->Thumbnail.offset || !ImageInfo->Thumbnail.size) {
return; /* ignore this call */
}
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: filetype = %d", ImageInfo->Thumbnail.filetype);
#endif
switch(ImageInfo->Thumbnail.filetype) {
default:
case IMAGE_FILETYPE_JPEG:
/* done */
break;
case IMAGE_FILETYPE_TIFF_II:
case IMAGE_FILETYPE_TIFF_MM:
info_list = &ImageInfo->info_list[SECTION_THUMBNAIL];
new_size = 8 + 2 + info_list->count * 12 + 4;
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: size of signature + directory(%d): 0x%02X", info_list->count, new_size);
#endif
new_value= new_size; /* offset for ifd values outside ifd directory */
for (i=0; i<info_list->count; i++) {
info_data = &info_list->list[i];
byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
if (byte_count > 4) {
new_size += byte_count;
}
}
new_move = new_size;
new_data = safe_erealloc(ImageInfo->Thumbnail.data, 1, ImageInfo->Thumbnail.size, new_size);
ImageInfo->Thumbnail.data = new_data;
memmove(ImageInfo->Thumbnail.data + new_move, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
ImageInfo->Thumbnail.size += new_size;
/* fill in data */
if (ImageInfo->motorola_intel) {
memmove(new_data, "MM\x00\x2a\x00\x00\x00\x08", 8);
} else {
memmove(new_data, "II\x2a\x00\x08\x00\x00\x00", 8);
}
new_data += 8;
php_ifd_set16u(new_data, info_list->count, ImageInfo->motorola_intel);
new_data += 2;
for (i=0; i<info_list->count; i++) {
info_data = &info_list->list[i];
byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: process tag(x%04X=%s): %s%s (%d bytes)", info_data->tag, exif_get_tagname_debug(info_data->tag, tag_table_IFD), (info_data->length>1)&&info_data->format!=TAG_FMT_UNDEFINED&&info_data->format!=TAG_FMT_STRING?"ARRAY OF ":"", exif_get_tagformat(info_data->format), byte_count);
#endif
if (info_data->tag==TAG_STRIP_OFFSETS || info_data->tag==TAG_JPEG_INTERCHANGE_FORMAT) {
php_ifd_set16u(new_data + 0, info_data->tag, ImageInfo->motorola_intel);
php_ifd_set16u(new_data + 2, TAG_FMT_ULONG, ImageInfo->motorola_intel);
php_ifd_set32u(new_data + 4, 1, ImageInfo->motorola_intel);
php_ifd_set32u(new_data + 8, new_move, ImageInfo->motorola_intel);
} else {
php_ifd_set16u(new_data + 0, info_data->tag, ImageInfo->motorola_intel);
php_ifd_set16u(new_data + 2, info_data->format, ImageInfo->motorola_intel);
php_ifd_set32u(new_data + 4, info_data->length, ImageInfo->motorola_intel);
value_ptr = exif_ifd_make_value(info_data, ImageInfo->motorola_intel);
if (byte_count <= 4) {
memmove(new_data+8, value_ptr, 4);
} else {
php_ifd_set32u(new_data+8, new_value, ImageInfo->motorola_intel);
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: writing with value offset: 0x%04X + 0x%02X", new_value, byte_count);
#endif
memmove(ImageInfo->Thumbnail.data+new_value, value_ptr, byte_count);
new_value += byte_count;
}
efree(value_ptr);
}
new_data += 12;
}
memset(new_data, 0, 4); /* next ifd pointer */
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: created");
#endif
break;
}
}
/* }}} */
/* {{{ exif_thumbnail_extract
* Grab the thumbnail, corrected */
static void exif_thumbnail_extract(image_info_type *ImageInfo, const exif_offset_info *info) {
if (ImageInfo->Thumbnail.data) {
exif_error_docref("exif_read_data#error_mult_thumb" EXIFERR_CC, ImageInfo, E_WARNING, "Multiple possible thumbnails");
return; /* Should not happen */
}
if (!ImageInfo->read_thumbnail) {
return; /* ignore this call */
}
/* according to exif2.1, the thumbnail is not supposed to be greater than 64K */
if (ImageInfo->Thumbnail.size >= 65536
|| ImageInfo->Thumbnail.size <= 0
|| ImageInfo->Thumbnail.offset <= 0
) {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Illegal thumbnail size/offset");
return;
}
/* Check to make sure we are not going to go past the ExifLength */
char *thumbnail = exif_offset_info_try_get(
info, ImageInfo->Thumbnail.offset, ImageInfo->Thumbnail.size);
if (!thumbnail) {
EXIF_ERRLOG_THUMBEOF(ImageInfo)
return;
}
ImageInfo->Thumbnail.data = estrndup(thumbnail, ImageInfo->Thumbnail.size);
exif_thumbnail_build(ImageInfo);
}
/* }}} */
/* {{{ exif_process_undefined
* Copy a string/buffer in Exif header to a character string and return length of allocated buffer if any. */
static int exif_process_undefined(char **result, char *value, size_t byte_count) {
/* we cannot use strlcpy - here the problem is that we have to copy NUL
* chars up to byte_count, we also have to add a single NUL character to
* force end of string.
* estrndup does not return length
*/
if (byte_count) {
(*result) = estrndup(value, byte_count); /* NULL @ byte_count!!! */
return byte_count+1;
}
return 0;
}
/* }}} */
/* {{{ exif_process_string_raw
* Copy a string in Exif header to a character string returns length of allocated buffer if any. */
static int exif_process_string_raw(char **result, char *value, size_t byte_count) {
/* we cannot use strlcpy - here the problem is that we have to copy NUL
* chars up to byte_count, we also have to add a single NUL character to
* force end of string.
*/
if (byte_count) {
(*result) = safe_emalloc(byte_count, 1, 1);
memcpy(*result, value, byte_count);
(*result)[byte_count] = '\0';
return byte_count+1;
}
return 0;
}
/* }}} */
/* {{{ exif_process_string
* Copy a string in Exif header to a character string and return length of allocated buffer if any.
* In contrast to exif_process_string this function does always return a string buffer */
static int exif_process_string(char **result, char *value, size_t byte_count) {
/* we cannot use strlcpy - here the problem is that we cannot use strlen to
* determine length of string and we cannot use strlcpy with len=byte_count+1
* because then we might get into an EXCEPTION if we exceed an allocated
* memory page...so we use php_strnlen in conjunction with memcpy and add the NUL
* char.
* estrdup would sometimes allocate more memory and does not return length
*/
if ((byte_count=php_strnlen(value, byte_count)) > 0) {
return exif_process_undefined(result, value, byte_count);
}
(*result) = estrndup("", 1); /* force empty string */
return byte_count+1;
}
/* }}} */
/* {{{ exif_process_user_comment
* Process UserComment in IFD. */
static int exif_process_user_comment(image_info_type *ImageInfo, char **pszInfoPtr, char **pszEncoding, char *szValuePtr, int ByteCount)
{
int a;
char *decode;
size_t len;
*pszEncoding = NULL;
/* Copy the comment */
if (ByteCount>=8) {
const zend_encoding *from, *to;
if (!memcmp(szValuePtr, "UNICODE\0", 8)) {
*pszEncoding = estrdup((const char*)szValuePtr);
szValuePtr = szValuePtr+8;
ByteCount -= 8;
/* First try to detect BOM: ZERO WIDTH NOBREAK SPACE (FEFF 16)
* since we have no encoding support for the BOM yet we skip that.
*/
if (ByteCount >=2 && !memcmp(szValuePtr, "\xFE\xFF", 2)) {
decode = "UCS-2BE";
szValuePtr = szValuePtr+2;
ByteCount -= 2;
} else if (ByteCount >=2 && !memcmp(szValuePtr, "\xFF\xFE", 2)) {
decode = "UCS-2LE";
szValuePtr = szValuePtr+2;
ByteCount -= 2;
} else if (ImageInfo->motorola_intel) {
decode = ImageInfo->decode_unicode_be;
} else {
decode = ImageInfo->decode_unicode_le;
}
to = zend_multibyte_fetch_encoding(ImageInfo->encode_unicode);
from = zend_multibyte_fetch_encoding(decode);
/* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX */
if (!to || !from || zend_multibyte_encoding_converter(
(unsigned char**)pszInfoPtr,
&len,
(unsigned char*)szValuePtr,
ByteCount,
to,
from) == (size_t)-1) {
len = exif_process_string_raw(pszInfoPtr, szValuePtr, ByteCount);
}
return len;
} else if (!memcmp(szValuePtr, "ASCII\0\0\0", 8)) {
*pszEncoding = estrdup((const char*)szValuePtr);
szValuePtr = szValuePtr+8;
ByteCount -= 8;
} else if (!memcmp(szValuePtr, "JIS\0\0\0\0\0", 8)) {
/* JIS should be translated to MB or we leave it to the user - leave it to the user */
*pszEncoding = estrdup((const char*)szValuePtr);
szValuePtr = szValuePtr+8;
ByteCount -= 8;
/* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX */
to = zend_multibyte_fetch_encoding(ImageInfo->encode_jis);
from = zend_multibyte_fetch_encoding(ImageInfo->motorola_intel ? ImageInfo->decode_jis_be : ImageInfo->decode_jis_le);
if (!to || !from || zend_multibyte_encoding_converter(
(unsigned char**)pszInfoPtr,
&len,
(unsigned char*)szValuePtr,
ByteCount,
to,
from) == (size_t)-1) {
len = exif_process_string_raw(pszInfoPtr, szValuePtr, ByteCount);
}
return len;
} else if (!memcmp(szValuePtr, "\0\0\0\0\0\0\0\0", 8)) {
/* 8 NULL means undefined and should be ASCII... */
*pszEncoding = estrdup("UNDEFINED");
szValuePtr = szValuePtr+8;
ByteCount -= 8;
}
}
/* Olympus has this padded with trailing spaces. Remove these first. */
if (ByteCount>0) {
for (a=ByteCount-1;a && szValuePtr[a]==' ';a--) {
(szValuePtr)[a] = '\0';
}
}
/* normal text without encoding */
exif_process_string(pszInfoPtr, szValuePtr, ByteCount);
return strlen(*pszInfoPtr);
}
/* }}} */
/* {{{ exif_process_unicode
* Process unicode field in IFD. */
static int exif_process_unicode(image_info_type *ImageInfo, xp_field_type *xp_field, int tag, char *szValuePtr, int ByteCount)
{
xp_field->tag = tag;
xp_field->value = NULL;
/* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX */
if (zend_multibyte_encoding_converter(
(unsigned char**)&xp_field->value,
&xp_field->size,
(unsigned char*)szValuePtr,
ByteCount,
zend_multibyte_fetch_encoding(ImageInfo->encode_unicode),
zend_multibyte_fetch_encoding(ImageInfo->motorola_intel ? ImageInfo->decode_unicode_be : ImageInfo->decode_unicode_le)
) == (size_t)-1) {
xp_field->size = exif_process_string_raw(&xp_field->value, szValuePtr, ByteCount);
}
return xp_field->size;
}
/* }}} */
/* {{{ exif_process_IFD_in_MAKERNOTE
* Process nested IFDs directories in Maker Note. */
static bool exif_process_IFD_in_MAKERNOTE(image_info_type *ImageInfo, char * value_ptr, int value_len, const exif_offset_info *info, size_t displacement)
{
size_t i;
int de, section_index = SECTION_MAKERNOTE;
int NumDirEntries, old_motorola_intel;
const maker_note_type *maker_note;
char *dir_start;
exif_offset_info new_info;
for (i=0; i<=sizeof(maker_note_array)/sizeof(maker_note_type); i++) {
if (i==sizeof(maker_note_array)/sizeof(maker_note_type)) {
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "No maker note data found. Detected maker: %s (length = %d)", ImageInfo->make, ImageInfo->make ? strlen(ImageInfo->make) : 0);
#endif
/* unknown manufacturer, not an error, use it as a string */
return true;
}
maker_note = maker_note_array+i;
if (maker_note->make && (!ImageInfo->make || strcmp(maker_note->make, ImageInfo->make)))
continue;
if (maker_note->id_string && value_len >= maker_note->id_string_len
&& strncmp(maker_note->id_string, value_ptr, maker_note->id_string_len))
continue;
break;
}
if (value_len < 2 || maker_note->offset >= value_len - 1) {
/* Do not go past the value end */
exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "IFD data too short: 0x%04X offset 0x%04X", value_len, maker_note->offset);
return true;
}
dir_start = value_ptr + maker_note->offset;
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process %s @x%04X + 0x%04X=%d: %s", exif_get_sectionname(section_index), (intptr_t)dir_start-(intptr_t)info->offset_base+maker_note->offset+displacement, value_len, value_len, exif_char_dump(value_ptr, value_len, (intptr_t)dir_start-(intptr_t)info->offset_base+maker_note->offset+displacement));
#endif
ImageInfo->sections_found |= FOUND_MAKERNOTE;
old_motorola_intel = ImageInfo->motorola_intel;
switch (maker_note->byte_order) {
case MN_ORDER_INTEL:
ImageInfo->motorola_intel = 0;
break;
case MN_ORDER_MOTOROLA:
ImageInfo->motorola_intel = 1;
break;
default:
case MN_ORDER_NORMAL:
break;
}
NumDirEntries = php_ifd_get16u(dir_start, ImageInfo->motorola_intel);
/* It can be that motorola_intel is wrongly mapped, let's try inverting it */
if ((2+NumDirEntries*12) > value_len) {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Potentially invalid endianess, trying again with different endianness before imminent failure.");
ImageInfo->motorola_intel = ImageInfo->motorola_intel == 0 ? 1 : 0;
NumDirEntries = php_ifd_get16u(dir_start, ImageInfo->motorola_intel);
}
if ((2+NumDirEntries*12) > value_len) {
exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size: 2 + 0x%04X*12 = 0x%04X > 0x%04X", NumDirEntries, 2+NumDirEntries*12, value_len);
return false;
}
if ((dir_start - value_ptr) > value_len - (2+NumDirEntries*12)) {
exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size: 0x%04X > 0x%04X", (dir_start - value_ptr) + (2+NumDirEntries*12), value_len);
return false;
}
switch (maker_note->offset_mode) {
case MN_OFFSET_MAKER:
exif_offset_info_init(&new_info, value_ptr, value_ptr, value_len);
info = &new_info;
break;
default:
case MN_OFFSET_NORMAL:
break;
}
for (de=0;de<NumDirEntries;de++) {
size_t offset = 2 + 12 * de;
if (!exif_process_IFD_TAG(ImageInfo, dir_start + offset,
info, displacement, section_index, 0, maker_note->tag_table)) {
return false;
}
}
ImageInfo->motorola_intel = old_motorola_intel;
/* NextDirOffset (must be NULL) = php_ifd_get32u(dir_start+2+12*de, ImageInfo->motorola_intel);*/
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Subsection %s done", exif_get_sectionname(SECTION_MAKERNOTE));
#endif
return true;
}
/* }}} */
#define REQUIRE_NON_EMPTY() do { \
if (byte_count == 0) { \
exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Cannot be empty", tag, exif_get_tagname_debug(tag, tag_table)); \
return false; \
} \
} while (0)
/* {{{ exif_process_IFD_TAG
* Process one of the nested IFDs directories. */
static bool exif_process_IFD_TAG(image_info_type *ImageInfo, char *dir_entry, const exif_offset_info *info, size_t displacement, int section_index, int ReadNextIFD, tag_table_type tag_table)
{
size_t length;
unsigned int tag, format, components;
char *value_ptr, tagname[64], cbuf[32], *outside=NULL;
size_t byte_count, offset_val, fpos, fgot;
int64_t byte_count_signed;
xp_field_type *tmp_xp;
#ifdef EXIF_DEBUG
char *dump_data;
int dump_free;
#endif /* EXIF_DEBUG */
/* Protect against corrupt headers */
if (ImageInfo->ifd_nesting_level > MAX_IFD_NESTING_LEVEL) {
exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "corrupt EXIF header: maximum directory nesting level reached");
return false;
}
ImageInfo->ifd_nesting_level++;
tag = php_ifd_get16u(dir_entry, ImageInfo->motorola_intel);
format = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
components = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel);
if (!format || format > NUM_FORMATS) {
/* (-1) catches illegal zero case as unsigned underflows to positive large. */
exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal format code 0x%04X, suppose BYTE", tag, exif_get_tagname_debug(tag, tag_table), format);
format = TAG_FMT_BYTE;
}
byte_count_signed = (int64_t)components * php_tiff_bytes_per_format[format];
if (byte_count_signed < 0 || (byte_count_signed > INT32_MAX)) {
exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal byte_count", tag, exif_get_tagname_debug(tag, tag_table));
return false;
}
byte_count = (size_t)byte_count_signed;
if (byte_count > 4) {
/* If its bigger than 4 bytes, the dir entry contains an offset. */
offset_val = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
value_ptr = exif_offset_info_try_get(info, offset_val, byte_count);
if (!value_ptr) {
/* It is important to check for IMAGE_FILETYPE_TIFF
* JPEG does not use absolute pointers instead its pointers are
* relative to the start of the TIFF header in APP1 section. */
// TODO: Shouldn't we also be taking "displacement" into account here?
if (byte_count > ImageInfo->FileSize || offset_val>ImageInfo->FileSize-byte_count || (ImageInfo->FileType!=IMAGE_FILETYPE_TIFF_II && ImageInfo->FileType!=IMAGE_FILETYPE_TIFF_MM && ImageInfo->FileType!=IMAGE_FILETYPE_JPEG)) {
exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal pointer offset(x%04X + x%04X = x%04X > x%04X)", tag, exif_get_tagname_debug(tag, tag_table), offset_val, byte_count, offset_val+byte_count, ImageInfo->FileSize);
return false;
}
if (byte_count>sizeof(cbuf)) {
/* mark as outside range and get buffer */
value_ptr = safe_emalloc(byte_count, 1, 0);
outside = value_ptr;
} else {
/* In most cases we only access a small range so
* it is faster to use a static buffer there
* BUT it offers also the possibility to have
* pointers read without the need to free them
* explicitley before returning. */
memset(&cbuf, 0, sizeof(cbuf));
value_ptr = cbuf;
}
fpos = php_stream_tell(ImageInfo->infile);
php_stream_seek(ImageInfo->infile, displacement+offset_val, SEEK_SET);
fgot = php_stream_tell(ImageInfo->infile);
if (fgot!=displacement+offset_val) {
EFREE_IF(outside);
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Wrong file pointer: 0x%08X != 0x%08X", fgot, displacement+offset_val);
return false;
}
fgot = php_stream_read(ImageInfo->infile, value_ptr, byte_count);
php_stream_seek(ImageInfo->infile, fpos, SEEK_SET);
if (fgot != byte_count) {
EFREE_IF(outside);
EXIF_ERRLOG_FILEEOF(ImageInfo)
return false;
}
}
} else {
/* 4 bytes or less and value is in the dir entry itself */
value_ptr = dir_entry+8;
// TODO: This is dubious, but the value is only used for debugging.
offset_val = value_ptr-info->offset_base;
}
ImageInfo->sections_found |= FOUND_ANY_TAG;
#ifdef EXIF_DEBUG
dump_data = exif_dump_data(&dump_free, format, components, ImageInfo->motorola_intel, value_ptr);
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE,
"Process tag(x%04X=%s,@x%04X + x%04X(=%d)): %s%s %s",
tag, exif_get_tagname_debug(tag, tag_table), offset_val+displacement, byte_count, byte_count, (components>1)&&format!=TAG_FMT_UNDEFINED&&format!=TAG_FMT_STRING?"ARRAY OF ":"", exif_get_tagformat(format), dump_data);
if (dump_free) {
efree(dump_data);
}
#endif
/* NB: The following code may not assume that there is at least one component!
* byte_count may be zero! */
if (section_index==SECTION_THUMBNAIL) {
if (!ImageInfo->Thumbnail.data) {
REQUIRE_NON_EMPTY();
switch(tag) {
case TAG_IMAGEWIDTH:
case TAG_COMP_IMAGE_WIDTH:
ImageInfo->Thumbnail.width = exif_convert_any_to_int(value_ptr, exif_rewrite_tag_format_to_unsigned(format), ImageInfo->motorola_intel);
break;
case TAG_IMAGEHEIGHT:
case TAG_COMP_IMAGE_HEIGHT:
ImageInfo->Thumbnail.height = exif_convert_any_to_int(value_ptr, exif_rewrite_tag_format_to_unsigned(format), ImageInfo->motorola_intel);
break;
case TAG_STRIP_OFFSETS:
case TAG_JPEG_INTERCHANGE_FORMAT:
/* accept both formats */
ImageInfo->Thumbnail.offset = exif_convert_any_to_int(value_ptr, exif_rewrite_tag_format_to_unsigned(format), ImageInfo->motorola_intel);
break;
case TAG_STRIP_BYTE_COUNTS:
if (ImageInfo->FileType == IMAGE_FILETYPE_TIFF_II || ImageInfo->FileType == IMAGE_FILETYPE_TIFF_MM) {
ImageInfo->Thumbnail.filetype = ImageInfo->FileType;
} else {
/* motorola is easier to read */
ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_TIFF_MM;
}
ImageInfo->Thumbnail.size = exif_convert_any_to_int(value_ptr, exif_rewrite_tag_format_to_unsigned(format), ImageInfo->motorola_intel);
break;
case TAG_JPEG_INTERCHANGE_FORMAT_LEN:
if (ImageInfo->Thumbnail.filetype == IMAGE_FILETYPE_UNKNOWN) {
ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_JPEG;
ImageInfo->Thumbnail.size = exif_convert_any_to_int(value_ptr, exif_rewrite_tag_format_to_unsigned(format), ImageInfo->motorola_intel);
}
break;
}
}
} else {
if (section_index==SECTION_IFD0 || section_index==SECTION_EXIF)
switch(tag) {
case TAG_COPYRIGHT:
/* check for "<photographer> NUL <editor> NUL" */
if (byte_count>1 && (length=php_strnlen(value_ptr, byte_count)) > 0) {
if (length<byte_count-1) {
/* When there are any characters after the first NUL */
EFREE_IF(ImageInfo->CopyrightPhotographer);
EFREE_IF(ImageInfo->CopyrightEditor);
EFREE_IF(ImageInfo->Copyright);
ImageInfo->CopyrightPhotographer = estrdup(value_ptr);
ImageInfo->CopyrightEditor = estrndup(value_ptr+length+1, byte_count-length-1);
spprintf(&ImageInfo->Copyright, 0, "%s, %s", ImageInfo->CopyrightPhotographer, ImageInfo->CopyrightEditor);
/* format = TAG_FMT_UNDEFINED; this mustn't be ASCII */
/* but we are not supposed to change this */
/* keep in mind that image_info does not store editor value */
} else {
EFREE_IF(ImageInfo->Copyright);
ImageInfo->Copyright = estrndup(value_ptr, byte_count);
}
}
break;
case TAG_USERCOMMENT:
EFREE_IF(ImageInfo->UserComment);
ImageInfo->UserComment = NULL;
EFREE_IF(ImageInfo->UserCommentEncoding);
ImageInfo->UserCommentEncoding = NULL;
ImageInfo->UserCommentLength = exif_process_user_comment(ImageInfo, &(ImageInfo->UserComment), &(ImageInfo->UserCommentEncoding), value_ptr, byte_count);
break;
case TAG_XP_TITLE:
case TAG_XP_COMMENTS:
case TAG_XP_AUTHOR:
case TAG_XP_KEYWORDS:
case TAG_XP_SUBJECT:
tmp_xp = (xp_field_type*)safe_erealloc(ImageInfo->xp_fields.list, (ImageInfo->xp_fields.count+1), sizeof(xp_field_type), 0);
ImageInfo->sections_found |= FOUND_WINXP;
ImageInfo->xp_fields.list = tmp_xp;
ImageInfo->xp_fields.count++;
exif_process_unicode(ImageInfo, &(ImageInfo->xp_fields.list[ImageInfo->xp_fields.count-1]), tag, value_ptr, byte_count);
break;
case TAG_FNUMBER:
/* Simplest way of expressing aperture, so I trust it the most.
(overwrite previously computed value if there is one) */
REQUIRE_NON_EMPTY();
ImageInfo->ApertureFNumber = (float)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel);
break;
case TAG_APERTURE:
case TAG_MAX_APERTURE:
/* More relevant info always comes earlier, so only use this field if we don't
have appropriate aperture information yet. */
if (ImageInfo->ApertureFNumber == 0) {
REQUIRE_NON_EMPTY();
ImageInfo->ApertureFNumber
= expf(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel)*logf(2.0)*0.5);
}
break;
case TAG_SHUTTERSPEED:
/* More complicated way of expressing exposure time, so only use
this value if we don't already have it from somewhere else.
SHUTTERSPEED comes after EXPOSURE TIME
*/
if (ImageInfo->ExposureTime == 0) {
REQUIRE_NON_EMPTY();
ImageInfo->ExposureTime
= expf(-exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel)*logf(2.0));
}
break;
case TAG_EXPOSURETIME:
ImageInfo->ExposureTime = -1;
break;
case TAG_COMP_IMAGE_WIDTH:
REQUIRE_NON_EMPTY();
ImageInfo->ExifImageWidth = exif_convert_any_to_int(value_ptr, exif_rewrite_tag_format_to_unsigned(format), ImageInfo->motorola_intel);
break;
case TAG_FOCALPLANE_X_RES:
REQUIRE_NON_EMPTY();
ImageInfo->FocalplaneXRes = exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel);
break;
case TAG_SUBJECT_DISTANCE:
/* Inidcates the distacne the autofocus camera is focused to.
Tends to be less accurate as distance increases. */
REQUIRE_NON_EMPTY();
ImageInfo->Distance = (float)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel);
break;
case TAG_FOCALPLANE_RESOLUTION_UNIT:
REQUIRE_NON_EMPTY();
switch (exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel)) {
case 1: ImageInfo->FocalplaneUnits = 25.4; break; /* inch */
case 2:
/* According to the information I was using, 2 measn meters.
But looking at the Cannon powershot's files, inches is the only
sensible value. */
ImageInfo->FocalplaneUnits = 25.4;
break;
case 3: ImageInfo->FocalplaneUnits = 10; break; /* centimeter */
case 4: ImageInfo->FocalplaneUnits = 1; break; /* milimeter */
case 5: ImageInfo->FocalplaneUnits = .001; break; /* micrometer */
}
break;
case TAG_SUB_IFD:
if (format==TAG_FMT_IFD) {
/* If this is called we are either in a TIFFs thumbnail or a JPEG where we cannot handle it */
/* TIFF thumbnail: our data structure cannot store a thumbnail of a thumbnail */
/* JPEG do we have the data area and what to do with it */
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Skip SUB IFD");
}
break;
case TAG_MAKE:
EFREE_IF(ImageInfo->make);
ImageInfo->make = estrndup(value_ptr, byte_count);
break;
case TAG_MODEL:
EFREE_IF(ImageInfo->model);
ImageInfo->model = estrndup(value_ptr, byte_count);
break;
case TAG_MAKER_NOTE:
if (!exif_process_IFD_in_MAKERNOTE(ImageInfo, value_ptr, byte_count, info, displacement)) {
EFREE_IF(outside);
return false;
}
break;
case TAG_EXIF_IFD_POINTER:
case TAG_GPS_IFD_POINTER:
case TAG_INTEROP_IFD_POINTER:
if (ReadNextIFD) {
REQUIRE_NON_EMPTY();
char *Subdir_start;
int sub_section_index = 0;
switch(tag) {
case TAG_EXIF_IFD_POINTER:
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found EXIF");
#endif
ImageInfo->sections_found |= FOUND_EXIF;
sub_section_index = SECTION_EXIF;
break;
case TAG_GPS_IFD_POINTER:
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found GPS");
#endif
ImageInfo->sections_found |= FOUND_GPS;
sub_section_index = SECTION_GPS;
break;
case TAG_INTEROP_IFD_POINTER:
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found INTEROPERABILITY");
#endif
ImageInfo->sections_found |= FOUND_INTEROP;
sub_section_index = SECTION_INTEROP;
break;
}
offset_val = php_ifd_get32u(value_ptr, ImageInfo->motorola_intel);
Subdir_start = exif_offset_info_try_get(info, offset_val, 0);
if (!Subdir_start) {
exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD Pointer");
EFREE_IF(outside);
return false;
}
if (!exif_process_IFD_in_JPEG(ImageInfo, Subdir_start, info, displacement, sub_section_index, tag)) {
EFREE_IF(outside);
return false;
}
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Subsection %s done", exif_get_sectionname(sub_section_index));
#endif
}
}
}
exif_iif_add_tag(ImageInfo, section_index, exif_get_tagname_key(tag, tagname, sizeof(tagname), tag_table), tag, format, components, value_ptr, byte_count);
EFREE_IF(outside);
return true;
}
/* }}} */
/* {{{ exif_process_IFD_in_JPEG
* Process one of the nested IFDs directories. */
static bool exif_process_IFD_in_JPEG(image_info_type *ImageInfo, char *dir_start, const exif_offset_info *info, size_t displacement, int section_index, int tag)
{
int de;
int NumDirEntries;
int NextDirOffset = 0;
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process %s (x%04X(=%d))", exif_get_sectionname(section_index), exif_offset_info_length(info), exif_offset_info_length(info));
#endif
ImageInfo->sections_found |= FOUND_IFD0;
if (!exif_offset_info_contains(info, dir_start, 2)) {
exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size");
return false;
}
NumDirEntries = php_ifd_get16u(dir_start, ImageInfo->motorola_intel);
if (!exif_offset_info_contains(info, dir_start+2, NumDirEntries*12)) {
exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size: x%04X + 2 + x%04X*12 = x%04X > x%04X", (int)((size_t)dir_start+2-(size_t)info->valid_start), NumDirEntries, (int)((size_t)dir_start+2+NumDirEntries*12-(size_t)info->valid_start), info->valid_end - info->valid_start);
return false;
}
for (de=0;de<NumDirEntries;de++) {
if (!exif_process_IFD_TAG(ImageInfo, dir_start + 2 + 12 * de,
info, displacement, section_index, 1, exif_get_tag_table(section_index))) {
return false;
}
}
/*
* Ignore IFD2 if it purportedly exists
*/
if (section_index == SECTION_THUMBNAIL) {
return true;
}
/*
* Hack to make it process IDF1 I hope
* There are 2 IDFs, the second one holds the keys (0x0201 and 0x0202) to the thumbnail
*/
if (!exif_offset_info_contains(info, dir_start+2+NumDirEntries*12, 4)) {
exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size");
return false;
}
if (tag != TAG_EXIF_IFD_POINTER && tag != TAG_GPS_IFD_POINTER) {
NextDirOffset = php_ifd_get32u(dir_start+2+12*de, ImageInfo->motorola_intel);
}
if (NextDirOffset) {
char *next_dir_start = exif_offset_info_try_get(info, NextDirOffset, 0);
if (!next_dir_start) {
exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD offset");
return false;
}
/* That is the IFD for the first thumbnail */
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Expect next IFD to be thumbnail");
#endif
if (exif_process_IFD_in_JPEG(ImageInfo, next_dir_start, info, displacement, SECTION_THUMBNAIL, 0)) {
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail size: 0x%04X", ImageInfo->Thumbnail.size);
#endif
if (ImageInfo->Thumbnail.filetype != IMAGE_FILETYPE_UNKNOWN
&& ImageInfo->Thumbnail.size
&& ImageInfo->Thumbnail.offset
&& ImageInfo->read_thumbnail
) {
exif_thumbnail_extract(ImageInfo, info);
}
return true;
} else {
return false;
}
}
return true;
}
/* }}} */
/* {{{ exif_process_TIFF_in_JPEG
Process a TIFF header in a JPEG file
*/
static void exif_process_TIFF_in_JPEG(image_info_type *ImageInfo, char *CharBuf, size_t length, size_t displacement)
{
unsigned exif_value_2a, offset_of_ifd;
exif_offset_info info;
if (length < 2) {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Missing TIFF alignment marker");
return;
}
if (length < 2) {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Missing TIFF alignment marker");
return;
}
/* set the thumbnail stuff to nothing so we can test to see if they get set up */
if (memcmp(CharBuf, "II", 2) == 0) {
ImageInfo->motorola_intel = 0;
} else if (memcmp(CharBuf, "MM", 2) == 0) {
ImageInfo->motorola_intel = 1;
} else {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF alignment marker");
return;
}
/* Check the next two values for correctness. */
if (length < 8) {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF start (1)");
return;
}
exif_value_2a = php_ifd_get16u(CharBuf+2, ImageInfo->motorola_intel);
offset_of_ifd = php_ifd_get32u(CharBuf+4, ImageInfo->motorola_intel);
if (exif_value_2a != 0x2a || offset_of_ifd < 0x08) {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF start (1)");
return;
}
if (offset_of_ifd > length) {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid IFD start");
return;
}
ImageInfo->sections_found |= FOUND_IFD0;
/* First directory starts at offset 8. Offsets starts at 0. */
exif_offset_info_init(&info, CharBuf, CharBuf, length/*-14*/);
exif_process_IFD_in_JPEG(ImageInfo, CharBuf+offset_of_ifd, &info, displacement, SECTION_IFD0, 0);
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process TIFF in JPEG done");
#endif
/* Compute the CCD width, in millimeters. */
if (ImageInfo->FocalplaneXRes != 0) {
ImageInfo->CCDWidth = (float)(ImageInfo->ExifImageWidth * ImageInfo->FocalplaneUnits / ImageInfo->FocalplaneXRes);
}
}
/* }}} */
/* {{{ exif_process_APP1
Process an JPEG APP1 block marker
Describes all the drivel that most digital cameras include...
*/
static void exif_process_APP1(image_info_type *ImageInfo, char *CharBuf, size_t length, size_t displacement)
{
/* Check the APP1 for Exif Identifier Code */
static const uchar ExifHeader[] = {0x45, 0x78, 0x69, 0x66, 0x00, 0x00};
if (length <= 8 || memcmp(CharBuf+2, ExifHeader, 6)) {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Incorrect APP1 Exif Identifier Code");
return;
}
exif_process_TIFF_in_JPEG(ImageInfo, CharBuf + 8, length - 8, displacement+8);
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process APP1/EXIF done");
#endif
}
/* }}} */
/* {{{ exif_process_APP12
Process an JPEG APP12 block marker used by OLYMPUS
*/
static void exif_process_APP12(image_info_type *ImageInfo, char *buffer, size_t length)
{
size_t l1, l2=0;
if ((l1 = php_strnlen(buffer+2, length-2)) > 0) {
exif_iif_add_tag(ImageInfo, SECTION_APP12, "Company", TAG_NONE, TAG_FMT_STRING, l1, buffer+2, l1);
if (length > 2+l1+1) {
l2 = php_strnlen(buffer+2+l1+1, length-2-l1-1);
exif_iif_add_tag(ImageInfo, SECTION_APP12, "Info", TAG_NONE, TAG_FMT_STRING, l2, buffer+2+l1+1, l2);
}
}
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process section APP12 with l1=%d, l2=%d done", l1, l2);
#endif
}
/* }}} */
/* {{{ exif_scan_JPEG_header
* Parse the marker stream until SOS or EOI is seen; */
static bool exif_scan_JPEG_header(image_info_type *ImageInfo)
{
int section, sn;
int marker = 0, last_marker = M_PSEUDO, comment_correction=1;
unsigned int ll, lh;
uchar *Data;
size_t fpos, size, got, itemlen;
jpeg_sof_info sof_info;
for(section=0;;section++) {
#ifdef EXIF_DEBUG
fpos = php_stream_tell(ImageInfo->infile);
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Needing section %d @ 0x%08X", ImageInfo->file.count, fpos);
#endif
/* get marker byte, swallowing possible padding */
/* some software does not count the length bytes of COM section */
/* one company doing so is very much involved in JPEG... so we accept too */
if (last_marker==M_COM && comment_correction) {
comment_correction = 2;
}
do {
if ((marker = php_stream_getc(ImageInfo->infile)) == EOF) {
EXIF_ERRLOG_CORRUPT(ImageInfo)
return false;
}
if (last_marker==M_COM && comment_correction>0) {
if (marker!=0xFF) {
marker = 0xff;
comment_correction--;
} else {
last_marker = M_PSEUDO; /* stop skipping 0 for M_COM */
}
}
} while (marker == 0xff);
if (last_marker==M_COM && !comment_correction) {
exif_error_docref("exif_read_data#error_mcom" EXIFERR_CC, ImageInfo, E_NOTICE, "Image has corrupt COM section: some software set wrong length information");
}
if (last_marker==M_COM && comment_correction)
return M_EOI; /* ah illegal: char after COM section not 0xFF */
fpos = php_stream_tell(ImageInfo->infile);
if (marker == 0xff) {
/* 0xff is legal padding, but if we get that many, something's wrong. */
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "To many padding bytes");
return false;
}
/* Read the length of the section. */
if ((lh = php_stream_getc(ImageInfo->infile)) == (unsigned int)EOF) {
EXIF_ERRLOG_CORRUPT(ImageInfo)
return false;
}
if ((ll = php_stream_getc(ImageInfo->infile)) == (unsigned int)EOF) {
EXIF_ERRLOG_CORRUPT(ImageInfo)
return false;
}
itemlen = (lh << 8) | ll;
if (itemlen < 2) {
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s, Section length: 0x%02X%02X", EXIF_ERROR_CORRUPT, lh, ll);
#else
EXIF_ERRLOG_CORRUPT(ImageInfo)
#endif
return false;
}
sn = exif_file_sections_add(ImageInfo, marker, itemlen, NULL);
Data = ImageInfo->file.list[sn].data;
/* Store first two pre-read bytes. */
Data[0] = (uchar)lh;
Data[1] = (uchar)ll;
got = php_stream_read(ImageInfo->infile, (char*)(Data+2), itemlen-2); /* Read the whole section. */
if (got != itemlen-2) {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error reading from file: got=x%04X(=%d) != itemlen-2=x%04X(=%d)", got, got, itemlen-2, itemlen-2);
return false;
}
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process section(x%02X=%s) @ x%04X + x%04X(=%d)", marker, exif_get_markername(marker), fpos, itemlen, itemlen);
#endif
switch(marker) {
case M_SOS: /* stop before hitting compressed data */
/* If reading entire image is requested, read the rest of the data. */
if (ImageInfo->read_all) {
/* Determine how much file is left. */
fpos = php_stream_tell(ImageInfo->infile);
size = ImageInfo->FileSize - fpos;
sn = exif_file_sections_add(ImageInfo, M_PSEUDO, size, NULL);
Data = ImageInfo->file.list[sn].data;
got = php_stream_read(ImageInfo->infile, (char*)Data, size);
if (got != size) {
EXIF_ERRLOG_FILEEOF(ImageInfo)
return false;
}
}
return true;
case M_EOI: /* in case it's a tables-only JPEG stream */
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "No image in jpeg!");
return (ImageInfo->sections_found&(~FOUND_COMPUTED)) ? true : false;
case M_COM: /* Comment section */
exif_process_COM(ImageInfo, (char *)Data, itemlen);
break;
case M_EXIF:
if (!(ImageInfo->sections_found&FOUND_IFD0)) {
/*ImageInfo->sections_found |= FOUND_EXIF;*/
/* Seen files from some 'U-lead' software with Vivitar scanner
that uses marker 31 later in the file (no clue what for!) */
exif_process_APP1(ImageInfo, (char *)Data, itemlen, fpos);
}
break;
case M_APP12:
exif_process_APP12(ImageInfo, (char *)Data, itemlen);
break;
case M_SOF0:
case M_SOF1:
case M_SOF2:
case M_SOF3:
case M_SOF5:
case M_SOF6:
case M_SOF7:
case M_SOF9:
case M_SOF10:
case M_SOF11:
case M_SOF13:
case M_SOF14:
case M_SOF15:
if ((itemlen - 2) < 6) {
return false;
}
exif_process_SOFn(Data, marker, &sof_info);
ImageInfo->Width = sof_info.width;
ImageInfo->Height = sof_info.height;
if (sof_info.num_components == 3) {
ImageInfo->IsColor = 1;
} else {
ImageInfo->IsColor = 0;
}
break;
default:
/* skip any other marker silently. */
break;
}
/* keep track of last marker */
last_marker = marker;
}
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Done");
#endif
return true;
}
/* }}} */
/* {{{ exif_scan_thumbnail
* scan JPEG in thumbnail (memory) */
static bool exif_scan_thumbnail(image_info_type *ImageInfo)
{
uchar c, *data = (uchar*)ImageInfo->Thumbnail.data;
int n, marker;
size_t length=2, pos=0;
jpeg_sof_info sof_info;
if (!data || ImageInfo->Thumbnail.size < 4) {
return false; /* nothing to do here */
}
if (memcmp(data, "\xFF\xD8\xFF", 3)) {
if (!ImageInfo->Thumbnail.width && !ImageInfo->Thumbnail.height) {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Thumbnail is not a JPEG image");
}
return false;
}
for (;;) {
pos += length;
if (pos>=ImageInfo->Thumbnail.size)
return false;
c = data[pos++];
if (pos>=ImageInfo->Thumbnail.size)
return false;
if (c != 0xFF) {
return false;
}
n = 8;
while ((c = data[pos++]) == 0xFF && n--) {
if (pos+3>=ImageInfo->Thumbnail.size)
return false;
/* +3 = pos++ of next check when reaching marker + 2 bytes for length */
}
if (c == 0xFF)
return false;
marker = c;
if (pos>=ImageInfo->Thumbnail.size)
return false;
length = php_jpg_get16(data+pos);
if (length > ImageInfo->Thumbnail.size || pos >= ImageInfo->Thumbnail.size - length) {
return false;
}
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: process section(x%02X=%s) @ x%04X + x%04X", marker, exif_get_markername(marker), pos, length);
#endif
switch (marker) {
case M_SOF0:
case M_SOF1:
case M_SOF2:
case M_SOF3:
case M_SOF5:
case M_SOF6:
case M_SOF7:
case M_SOF9:
case M_SOF10:
case M_SOF11:
case M_SOF13:
case M_SOF14:
case M_SOF15:
/* handle SOFn block */
if (length < 8 || ImageInfo->Thumbnail.size - 8 < pos) {
/* exif_process_SOFn needs 8 bytes */
return false;
}
exif_process_SOFn(data+pos, marker, &sof_info);
ImageInfo->Thumbnail.height = sof_info.height;
ImageInfo->Thumbnail.width = sof_info.width;
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: size: %d * %d", sof_info.width, sof_info.height);
#endif
return true;
case M_SOS:
case M_EOI:
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Could not compute size of thumbnail");
return false;
break;
default:
/* just skip */
break;
}
}
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Could not compute size of thumbnail");
return false;
}
/* }}} */
/* {{{ exif_process_IFD_in_TIFF
* Parse the TIFF header; */
static bool exif_process_IFD_in_TIFF(image_info_type *ImageInfo, size_t dir_offset, int section_index)
{
int i, sn, num_entries, sub_section_index = 0;
unsigned char *dir_entry;
size_t ifd_size, dir_size, entry_offset, next_offset, entry_length, entry_value=0, fgot;
int entry_tag , entry_type;
tag_table_type tag_table = exif_get_tag_table(section_index);
if (ImageInfo->ifd_nesting_level > MAX_IFD_NESTING_LEVEL) {
return false;
}
if (ImageInfo->FileSize >= 2 && ImageInfo->FileSize - 2 >= dir_offset) {
sn = exif_file_sections_add(ImageInfo, M_PSEUDO, 2, NULL);
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF: filesize(x%04X), IFD dir(x%04X + x%04X)", ImageInfo->FileSize, dir_offset, 2);
#endif
php_stream_seek(ImageInfo->infile, dir_offset, SEEK_SET); /* we do not know the order of sections */
php_stream_read(ImageInfo->infile, (char*)ImageInfo->file.list[sn].data, 2);
num_entries = php_ifd_get16u(ImageInfo->file.list[sn].data, ImageInfo->motorola_intel);
dir_size = 2/*num dir entries*/ +12/*length of entry*/*(size_t)num_entries +4/* offset to next ifd (points to thumbnail or NULL)*/;
if (ImageInfo->FileSize >= dir_size && ImageInfo->FileSize - dir_size >= dir_offset) {
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF: filesize(x%04X), IFD dir(x%04X + x%04X), IFD entries(%d)", ImageInfo->FileSize, dir_offset+2, dir_size-2, num_entries);
#endif
if (exif_file_sections_realloc(ImageInfo, sn, dir_size)) {
return false;
}
php_stream_read(ImageInfo->infile, (char*)(ImageInfo->file.list[sn].data+2), dir_size-2);
next_offset = php_ifd_get32u(ImageInfo->file.list[sn].data + dir_size - 4, ImageInfo->motorola_intel);
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF done, next offset x%04X", next_offset);
#endif
/* now we have the directory we can look how long it should be */
ifd_size = dir_size;
for(i=0;i<num_entries;i++) {
dir_entry = ImageInfo->file.list[sn].data+2+i*12;
entry_tag = php_ifd_get16u(dir_entry+0, ImageInfo->motorola_intel);
entry_type = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
if (entry_type > NUM_FORMATS) {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF: tag(0x%04X,%12s): Illegal format code 0x%04X, switching to BYTE", entry_tag, exif_get_tagname_debug(entry_tag, tag_table), entry_type);
/* Since this is repeated in exif_process_IFD_TAG make it a notice here */
/* and make it a warning in the exif_process_IFD_TAG which is called */
/* elsewhere. */
entry_type = TAG_FMT_BYTE;
/*The next line would break the image on writeback: */
/* php_ifd_set16u(dir_entry+2, entry_type, ImageInfo->motorola_intel);*/
}
entry_length = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel) * php_tiff_bytes_per_format[entry_type];
if (entry_length <= 4) {
switch(entry_type) {
case TAG_FMT_USHORT:
entry_value = php_ifd_get16u(dir_entry+8, ImageInfo->motorola_intel);
break;
case TAG_FMT_SSHORT:
entry_value = php_ifd_get16s(dir_entry+8, ImageInfo->motorola_intel);
break;
case TAG_FMT_ULONG:
entry_value = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
break;
case TAG_FMT_SLONG:
entry_value = php_ifd_get32s(dir_entry+8, ImageInfo->motorola_intel);
break;
}
switch(entry_tag) {
case TAG_IMAGEWIDTH:
case TAG_COMP_IMAGE_WIDTH:
ImageInfo->Width = entry_value;
break;
case TAG_IMAGEHEIGHT:
case TAG_COMP_IMAGE_HEIGHT:
ImageInfo->Height = entry_value;
break;
case TAG_PHOTOMETRIC_INTERPRETATION:
switch (entry_value) {
case PMI_BLACK_IS_ZERO:
case PMI_WHITE_IS_ZERO:
case PMI_TRANSPARENCY_MASK:
ImageInfo->IsColor = 0;
break;
case PMI_RGB:
case PMI_PALETTE_COLOR:
case PMI_SEPARATED:
case PMI_YCBCR:
case PMI_CIELAB:
ImageInfo->IsColor = 1;
break;
}
break;
}
} else {
entry_offset = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
/* if entry needs expading ifd cache and entry is at end of current ifd cache. */
/* otherwise there may be huge holes between two entries */
if (entry_offset + entry_length > dir_offset + ifd_size
&& entry_offset == dir_offset + ifd_size) {
ifd_size = entry_offset + entry_length - dir_offset;
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Resize struct: x%04X + x%04X - x%04X = x%04X", entry_offset, entry_length, dir_offset, ifd_size);
#endif
}
}
}
if (ImageInfo->FileSize >= ImageInfo->file.list[sn].size && ImageInfo->FileSize - ImageInfo->file.list[sn].size >= dir_offset) {
if (ifd_size > dir_size) {
if (ImageInfo->FileSize < ifd_size || dir_offset > ImageInfo->FileSize - ifd_size) {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error in TIFF: filesize(x%04X) less than size of IFD(x%04X + x%04X)", ImageInfo->FileSize, dir_offset, ifd_size);
return false;
}
if (exif_file_sections_realloc(ImageInfo, sn, ifd_size)) {
return false;
}
/* read values not stored in directory itself */
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF: filesize(x%04X), IFD(x%04X + x%04X)", ImageInfo->FileSize, dir_offset, ifd_size);
#endif
php_stream_read(ImageInfo->infile, (char*)(ImageInfo->file.list[sn].data+dir_size), ifd_size-dir_size);
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF, done");
#endif
}
/* now process the tags */
for(i=0;i<num_entries;i++) {
dir_entry = ImageInfo->file.list[sn].data+2+i*12;
entry_tag = php_ifd_get16u(dir_entry+0, ImageInfo->motorola_intel);
entry_type = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
/*entry_length = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel);*/
if (entry_tag == TAG_EXIF_IFD_POINTER ||
entry_tag == TAG_INTEROP_IFD_POINTER ||
entry_tag == TAG_GPS_IFD_POINTER ||
entry_tag == TAG_SUB_IFD
) {
switch(entry_tag) {
case TAG_EXIF_IFD_POINTER:
ImageInfo->sections_found |= FOUND_EXIF;
sub_section_index = SECTION_EXIF;
break;
case TAG_GPS_IFD_POINTER:
ImageInfo->sections_found |= FOUND_GPS;
sub_section_index = SECTION_GPS;
break;
case TAG_INTEROP_IFD_POINTER:
ImageInfo->sections_found |= FOUND_INTEROP;
sub_section_index = SECTION_INTEROP;
break;
case TAG_SUB_IFD:
ImageInfo->sections_found |= FOUND_THUMBNAIL;
sub_section_index = SECTION_THUMBNAIL;
break;
}
entry_offset = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Next IFD: %s @x%04X", exif_get_sectionname(sub_section_index), entry_offset);
#endif
ImageInfo->ifd_nesting_level++;
exif_process_IFD_in_TIFF(ImageInfo, entry_offset, sub_section_index);
if (section_index!=SECTION_THUMBNAIL && entry_tag==TAG_SUB_IFD) {
if (ImageInfo->Thumbnail.filetype != IMAGE_FILETYPE_UNKNOWN
&& ImageInfo->Thumbnail.size
&& ImageInfo->Thumbnail.offset
&& ImageInfo->read_thumbnail
) {
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "%s THUMBNAIL @0x%04X + 0x%04X", ImageInfo->Thumbnail.data ? "Ignore" : "Read", ImageInfo->Thumbnail.offset, ImageInfo->Thumbnail.size);
#endif
if (!ImageInfo->Thumbnail.data) {
ImageInfo->Thumbnail.data = safe_emalloc(ImageInfo->Thumbnail.size, 1, 0);
php_stream_seek(ImageInfo->infile, ImageInfo->Thumbnail.offset, SEEK_SET);
fgot = php_stream_read(ImageInfo->infile, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
if (fgot != ImageInfo->Thumbnail.size) {
EXIF_ERRLOG_THUMBEOF(ImageInfo)
efree(ImageInfo->Thumbnail.data);
ImageInfo->Thumbnail.data = NULL;
} else {
exif_thumbnail_build(ImageInfo);
}
}
}
}
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Next IFD: %s done", exif_get_sectionname(sub_section_index));
#endif
} else {
exif_offset_info info;
exif_offset_info_init(&info,
(char *) (ImageInfo->file.list[sn].data - dir_offset),
(char *) ImageInfo->file.list[sn].data, ifd_size);
if (!exif_process_IFD_TAG(ImageInfo, (char*)dir_entry, &info,
0, section_index, 0, tag_table)) {
return false;
}
}
}
/* If we had a thumbnail in a SUB_IFD we have ANOTHER image in NEXT IFD */
if (next_offset && section_index != SECTION_THUMBNAIL) {
/* this should be a thumbnail IFD */
/* the thumbnail itself is stored at Tag=StripOffsets */
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read next IFD (THUMBNAIL) at x%04X", next_offset);
#endif
ImageInfo->ifd_nesting_level++;
exif_process_IFD_in_TIFF(ImageInfo, next_offset, SECTION_THUMBNAIL);
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "%s THUMBNAIL @0x%04X + 0x%04X", ImageInfo->Thumbnail.data ? "Ignore" : "Read", ImageInfo->Thumbnail.offset, ImageInfo->Thumbnail.size);
#endif
if (!ImageInfo->Thumbnail.data && ImageInfo->Thumbnail.offset && ImageInfo->Thumbnail.size && ImageInfo->read_thumbnail) {
ImageInfo->Thumbnail.data = safe_emalloc(ImageInfo->Thumbnail.size, 1, 0);
php_stream_seek(ImageInfo->infile, ImageInfo->Thumbnail.offset, SEEK_SET);
fgot = php_stream_read(ImageInfo->infile, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
if (fgot != ImageInfo->Thumbnail.size) {
EXIF_ERRLOG_THUMBEOF(ImageInfo)
efree(ImageInfo->Thumbnail.data);
ImageInfo->Thumbnail.data = NULL;
} else {
exif_thumbnail_build(ImageInfo);
}
}
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read next IFD (THUMBNAIL) done");
#endif
}
return true;
} else {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error in TIFF: filesize(x%04X) less than size of IFD(x%04X)", ImageInfo->FileSize, dir_offset+ImageInfo->file.list[sn].size);
return false;
}
} else {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error in TIFF: filesize(x%04X) less than size of IFD dir(x%04X)", ImageInfo->FileSize, dir_offset+dir_size);
return false;
}
} else {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error in TIFF: filesize(x%04X) less than start of IFD dir(x%04X)", ImageInfo->FileSize, dir_offset+2);
return false;
}
}
/* }}} */
/* {{{ exif_scan_FILE_header
* Parse the marker stream until SOS or EOI is seen; */
static bool exif_scan_FILE_header(image_info_type *ImageInfo)
{
unsigned char file_header[8];
bool ret = false;
ImageInfo->FileType = IMAGE_FILETYPE_UNKNOWN;
if (ImageInfo->FileSize >= 2) {
php_stream_seek(ImageInfo->infile, 0, SEEK_SET);
if (php_stream_read(ImageInfo->infile, (char*)file_header, 2) != 2) {
return false;
}
if ((file_header[0]==0xff) && (file_header[1]==M_SOI)) {
ImageInfo->FileType = IMAGE_FILETYPE_JPEG;
if (exif_scan_JPEG_header(ImageInfo)) {
ret = true;
} else {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid JPEG file");
}
} else if (ImageInfo->FileSize >= 8) {
if (php_stream_read(ImageInfo->infile, (char*)(file_header+2), 6) != 6) {
return false;
}
if (!memcmp(file_header, "II\x2A\x00", 4)) {
ImageInfo->FileType = IMAGE_FILETYPE_TIFF_II;
ImageInfo->motorola_intel = 0;
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "File has TIFF/II format");
#endif
ImageInfo->sections_found |= FOUND_IFD0;
if (exif_process_IFD_in_TIFF(ImageInfo,
php_ifd_get32u(file_header + 4, ImageInfo->motorola_intel),
SECTION_IFD0)) {
ret = true;
} else {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF file");
}
} else if (!memcmp(file_header, "MM\x00\x2a", 4)) {
ImageInfo->FileType = IMAGE_FILETYPE_TIFF_MM;
ImageInfo->motorola_intel = 1;
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "File has TIFF/MM format");
#endif
ImageInfo->sections_found |= FOUND_IFD0;
if (exif_process_IFD_in_TIFF(ImageInfo,
php_ifd_get32u(file_header + 4, ImageInfo->motorola_intel),
SECTION_IFD0)) {
ret = true;
} else {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF file");
}
} else {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "File not supported");
return false;
}
}
} else {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "File too small (%d)", ImageInfo->FileSize);
}
return ret;
}
/* }}} */
/* {{{ exif_discard_imageinfo
Discard data scanned by exif_read_file.
*/
static bool exif_discard_imageinfo(image_info_type *ImageInfo)
{
int i;
EFREE_IF(ImageInfo->FileName);
EFREE_IF(ImageInfo->UserComment);
EFREE_IF(ImageInfo->UserCommentEncoding);
EFREE_IF(ImageInfo->Copyright);
EFREE_IF(ImageInfo->CopyrightPhotographer);
EFREE_IF(ImageInfo->CopyrightEditor);
EFREE_IF(ImageInfo->Thumbnail.data);
EFREE_IF(ImageInfo->encode_unicode);
EFREE_IF(ImageInfo->decode_unicode_be);
EFREE_IF(ImageInfo->decode_unicode_le);
EFREE_IF(ImageInfo->encode_jis);
EFREE_IF(ImageInfo->decode_jis_be);
EFREE_IF(ImageInfo->decode_jis_le);
EFREE_IF(ImageInfo->make);
EFREE_IF(ImageInfo->model);
for (i=0; i<ImageInfo->xp_fields.count; i++) {
EFREE_IF(ImageInfo->xp_fields.list[i].value);
}
EFREE_IF(ImageInfo->xp_fields.list);
for (i=0; i<SECTION_COUNT; i++) {
exif_iif_free(ImageInfo, i);
}
exif_file_sections_free(ImageInfo);
memset(ImageInfo, 0, sizeof(*ImageInfo));
return true;
}
/* }}} */
/* {{{ exif_read_from_impl */
static bool exif_read_from_impl(image_info_type *ImageInfo, php_stream *stream, int read_thumbnail, int read_all)
{
bool ret;
zend_stat_t st;
/* Start with an empty image information structure. */
memset(ImageInfo, 0, sizeof(*ImageInfo));
ImageInfo->motorola_intel = -1; /* flag as unknown */
ImageInfo->infile = stream;
ImageInfo->FileName = NULL;
if (php_stream_is(ImageInfo->infile, PHP_STREAM_IS_STDIO)) {
if (VCWD_STAT(stream->orig_path, &st) >= 0) {
zend_string *base;
if ((st.st_mode & S_IFMT) != S_IFREG) {
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Not a file");
ImageInfo->infile = NULL;
return false;
}
/* Store file name */
base = php_basename(stream->orig_path, strlen(stream->orig_path), NULL, 0);
ImageInfo->FileName = estrndup(ZSTR_VAL(base), ZSTR_LEN(base));
zend_string_release_ex(base, 0);
/* Store file date/time. */
ImageInfo->FileDateTime = st.st_mtime;
ImageInfo->FileSize = st.st_size;
}
} else {
if (!ImageInfo->FileSize) {
php_stream_seek(ImageInfo->infile, 0, SEEK_END);
ImageInfo->FileSize = php_stream_tell(ImageInfo->infile);
php_stream_seek(ImageInfo->infile, 0, SEEK_SET);
}
}
ImageInfo->read_thumbnail = read_thumbnail;
ImageInfo->read_all = read_all;
ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_UNKNOWN;
ImageInfo->encode_unicode = estrdup(EXIF_G(encode_unicode));
ImageInfo->decode_unicode_be = estrdup(EXIF_G(decode_unicode_be));
ImageInfo->decode_unicode_le = estrdup(EXIF_G(decode_unicode_le));
ImageInfo->encode_jis = estrdup(EXIF_G(encode_jis));
ImageInfo->decode_jis_be = estrdup(EXIF_G(decode_jis_be));
ImageInfo->decode_jis_le = estrdup(EXIF_G(decode_jis_le));
ImageInfo->ifd_nesting_level = 0;
ImageInfo->num_errors = 0;
/* Scan the headers */
ret = exif_scan_FILE_header(ImageInfo);
return ret;
}
/* }}} */
/* {{{ exif_read_from_stream */
static bool exif_read_from_stream(image_info_type *ImageInfo, php_stream *stream, int read_thumbnail, int read_all)
{
bool ret;
off_t old_pos = php_stream_tell(stream);
if (old_pos) {
php_stream_seek(stream, 0, SEEK_SET);
}
ret = exif_read_from_impl(ImageInfo, stream, read_thumbnail, read_all);
if (old_pos) {
php_stream_seek(stream, old_pos, SEEK_SET);
}
return ret;
}
/* }}} */
/* {{{ exif_read_from_file */
static bool exif_read_from_file(image_info_type *ImageInfo, char *FileName, int read_thumbnail, int read_all)
{
bool ret;
php_stream *stream;
stream = php_stream_open_wrapper(FileName, "rb", STREAM_MUST_SEEK | IGNORE_PATH, NULL);
if (!stream) {
memset(&ImageInfo, 0, sizeof(ImageInfo));
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Unable to open file");
return false;
}
ret = exif_read_from_stream(ImageInfo, stream, read_thumbnail, read_all);
php_stream_close(stream);
return ret;
}
/* }}} */
/* {{{ Reads header data from an image and optionally reads the internal thumbnails */
PHP_FUNCTION(exif_read_data)
{
zend_string *z_sections_needed = NULL;
zend_bool sub_arrays = 0, read_thumbnail = 0, read_all = 0;
zval *stream;
bool ret;
int i, sections_needed = 0;
image_info_type ImageInfo;
char tmp[64], *sections_str, *s;
/* Parse arguments */
ZEND_PARSE_PARAMETERS_START(1, 4)
Z_PARAM_ZVAL(stream)
Z_PARAM_OPTIONAL
Z_PARAM_STR_EX(z_sections_needed, 1, 0)
Z_PARAM_BOOL(sub_arrays)
Z_PARAM_BOOL(read_thumbnail)
ZEND_PARSE_PARAMETERS_END();
memset(&ImageInfo, 0, sizeof(ImageInfo));
if (z_sections_needed) {
spprintf(&sections_str, 0, ",%s,", ZSTR_VAL(z_sections_needed));
/* sections_str DOES start with , and SPACES are NOT allowed in names */
s = sections_str;
while (*++s) {
if (*s == ' ') {
*s = ',';
}
}
for (i = 0; i < SECTION_COUNT; i++) {
snprintf(tmp, sizeof(tmp), ",%s,", exif_get_sectionname(i));
if (strstr(sections_str, tmp)) {
sections_needed |= 1<<i;
}
}
EFREE_IF(sections_str);
/* now see what we need */
#ifdef EXIF_DEBUG
sections_str = exif_get_sectionlist(sections_needed);
if (!sections_str) {
RETURN_FALSE;
}
exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Sections needed: %s", sections_str[0] ? sections_str : "None");
EFREE_IF(sections_str);
#endif
}
if (Z_TYPE_P(stream) == IS_RESOURCE) {
php_stream *p_stream = NULL;
php_stream_from_res(p_stream, Z_RES_P(stream));
ret = exif_read_from_stream(&ImageInfo, p_stream, read_thumbnail, read_all);
} else {
if (!try_convert_to_string(stream)) {
RETURN_THROWS();
}
if (!Z_STRLEN_P(stream)) {
exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_WARNING, "Filename cannot be empty");
RETURN_FALSE;
}
ret = exif_read_from_file(&ImageInfo, Z_STRVAL_P(stream), read_thumbnail, read_all);
}
sections_str = exif_get_sectionlist(ImageInfo.sections_found);
#ifdef EXIF_DEBUG
if (sections_str) {
exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Sections found: %s", sections_str[0] ? sections_str : "None");
}
#endif
ImageInfo.sections_found |= FOUND_COMPUTED|FOUND_FILE;/* do not inform about in debug*/
if (ret == false || (sections_needed && !(sections_needed&ImageInfo.sections_found))) {
/* array_init must be checked at last! otherwise the array must be freed if a later test fails. */
exif_discard_imageinfo(&ImageInfo);
EFREE_IF(sections_str);
RETURN_FALSE;
}
array_init(return_value);
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Generate section FILE");
#endif
/* now we can add our information */
exif_iif_add_str(&ImageInfo, SECTION_FILE, "FileName", ImageInfo.FileName);
exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileDateTime", ImageInfo.FileDateTime);
exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileSize", ImageInfo.FileSize);
exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileType", ImageInfo.FileType);
exif_iif_add_str(&ImageInfo, SECTION_FILE, "MimeType", (char*)php_image_type_to_mime_type(ImageInfo.FileType));
exif_iif_add_str(&ImageInfo, SECTION_FILE, "SectionsFound", sections_str ? sections_str : "NONE");
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Generate section COMPUTED");
#endif
if (ImageInfo.Width>0 && ImageInfo.Height>0) {
exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "html" , "width=\"%d\" height=\"%d\"", ImageInfo.Width, ImageInfo.Height);
exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Height", ImageInfo.Height);
exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Width", ImageInfo.Width);
}
exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "IsColor", ImageInfo.IsColor);
if (ImageInfo.motorola_intel != -1) {
exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "ByteOrderMotorola", ImageInfo.motorola_intel);
}
if (ImageInfo.FocalLength) {
exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "FocalLength", "%4.1Fmm", ImageInfo.FocalLength);
if(ImageInfo.CCDWidth) {
exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "35mmFocalLength", "%dmm", (int)(ImageInfo.FocalLength/ImageInfo.CCDWidth*35+0.5));
}
}
if(ImageInfo.CCDWidth) {
exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "CCDWidth", "%dmm", (int)ImageInfo.CCDWidth);
}
if(ImageInfo.ExposureTime>0) {
float recip_exposure_time = 0.5f + 1.0f/ImageInfo.ExposureTime;
if (ImageInfo.ExposureTime <= 0.5 && recip_exposure_time < (float)INT_MAX) {
exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ExposureTime", "%0.3F s (1/%d)", ImageInfo.ExposureTime, (int) recip_exposure_time);
} else {
exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ExposureTime", "%0.3F s", ImageInfo.ExposureTime);
}
}
if(ImageInfo.ApertureFNumber) {
exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ApertureFNumber", "f/%.1F", ImageInfo.ApertureFNumber);
}
if(ImageInfo.Distance) {
if(ImageInfo.Distance<0) {
exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "FocusDistance", "Infinite");
} else {
exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "FocusDistance", "%0.2Fm", ImageInfo.Distance);
}
}
if (ImageInfo.UserComment) {
exif_iif_add_buffer(&ImageInfo, SECTION_COMPUTED, "UserComment", ImageInfo.UserCommentLength, ImageInfo.UserComment);
if (ImageInfo.UserCommentEncoding && strlen(ImageInfo.UserCommentEncoding)) {
exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "UserCommentEncoding", ImageInfo.UserCommentEncoding);
}
}
exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright", ImageInfo.Copyright);
exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright.Photographer", ImageInfo.CopyrightPhotographer);
exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright.Editor", ImageInfo.CopyrightEditor);
for (i=0; i<ImageInfo.xp_fields.count; i++) {
exif_iif_add_str(&ImageInfo, SECTION_WINXP, exif_get_tagname_debug(ImageInfo.xp_fields.list[i].tag, exif_get_tag_table(SECTION_WINXP)), ImageInfo.xp_fields.list[i].value);
}
if (ImageInfo.Thumbnail.size) {
if (read_thumbnail) {
/* not exif_iif_add_str : this is a buffer */
exif_iif_add_tag(&ImageInfo, SECTION_THUMBNAIL, "THUMBNAIL", TAG_NONE, TAG_FMT_UNDEFINED, ImageInfo.Thumbnail.size, ImageInfo.Thumbnail.data, ImageInfo.Thumbnail.size);
}
if (!ImageInfo.Thumbnail.width || !ImageInfo.Thumbnail.height) {
/* try to evaluate if thumbnail data is present */
exif_scan_thumbnail(&ImageInfo);
}
exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.FileType", ImageInfo.Thumbnail.filetype);
exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Thumbnail.MimeType", (char*)php_image_type_to_mime_type(ImageInfo.Thumbnail.filetype));
}
if (ImageInfo.Thumbnail.width && ImageInfo.Thumbnail.height) {
exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.Height", ImageInfo.Thumbnail.height);
exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.Width", ImageInfo.Thumbnail.width);
}
EFREE_IF(sections_str);
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Adding image infos");
#endif
add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_FILE );
add_assoc_image_info(return_value, 1, &ImageInfo, SECTION_COMPUTED );
add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_ANY_TAG );
add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_IFD0 );
add_assoc_image_info(return_value, 1, &ImageInfo, SECTION_THUMBNAIL );
add_assoc_image_info(return_value, 1, &ImageInfo, SECTION_COMMENT );
add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_EXIF );
add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_GPS );
add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_INTEROP );
add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_FPIX );
add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_APP12 );
add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_WINXP );
add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_MAKERNOTE );
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Discarding info");
#endif
exif_discard_imageinfo(&ImageInfo);
#ifdef EXIF_DEBUG
php_error_docref1(NULL, (Z_TYPE_P(stream) == IS_RESOURCE ? "<stream>" : Z_STRVAL_P(stream)), E_NOTICE, "Done");
#endif
}
/* }}} */
/* {{{ Reads the embedded thumbnail */
PHP_FUNCTION(exif_thumbnail)
{
bool ret;
int arg_c = ZEND_NUM_ARGS();
image_info_type ImageInfo;
zval *stream;
zval *z_width = NULL, *z_height = NULL, *z_imagetype = NULL;
/* Parse arguments */
ZEND_PARSE_PARAMETERS_START(1, 4)
Z_PARAM_ZVAL(stream)
Z_PARAM_OPTIONAL
Z_PARAM_ZVAL(z_width)
Z_PARAM_ZVAL(z_height)
Z_PARAM_ZVAL(z_imagetype)
ZEND_PARSE_PARAMETERS_END();
memset(&ImageInfo, 0, sizeof(ImageInfo));
if (Z_TYPE_P(stream) == IS_RESOURCE) {
php_stream *p_stream = NULL;
php_stream_from_res(p_stream, Z_RES_P(stream));
ret = exif_read_from_stream(&ImageInfo, p_stream, 1, 0);
} else {
if (!try_convert_to_string(stream)) {
RETURN_THROWS();
}
if (!Z_STRLEN_P(stream)) {
exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_WARNING, "Filename cannot be empty");
RETURN_FALSE;
}
ret = exif_read_from_file(&ImageInfo, Z_STRVAL_P(stream), 1, 0);
}
if (ret == false) {
exif_discard_imageinfo(&ImageInfo);
RETURN_FALSE;
}
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Thumbnail data %d %d %d, %d x %d", ImageInfo.Thumbnail.data, ImageInfo.Thumbnail.size, ImageInfo.Thumbnail.filetype, ImageInfo.Thumbnail.width, ImageInfo.Thumbnail.height);
#endif
if (!ImageInfo.Thumbnail.data || !ImageInfo.Thumbnail.size) {
exif_discard_imageinfo(&ImageInfo);
RETURN_FALSE;
}
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Returning thumbnail(%d)", ImageInfo.Thumbnail.size);
#endif
ZVAL_STRINGL(return_value, ImageInfo.Thumbnail.data, ImageInfo.Thumbnail.size);
if (arg_c >= 3) {
if (!ImageInfo.Thumbnail.width || !ImageInfo.Thumbnail.height) {
if (!exif_scan_thumbnail(&ImageInfo)) {
ImageInfo.Thumbnail.width = ImageInfo.Thumbnail.height = 0;
}
}
ZEND_TRY_ASSIGN_REF_LONG(z_width, ImageInfo.Thumbnail.width);
ZEND_TRY_ASSIGN_REF_LONG(z_height, ImageInfo.Thumbnail.height);
}
if (arg_c >= 4) {
ZEND_TRY_ASSIGN_REF_LONG(z_imagetype, ImageInfo.Thumbnail.filetype);
}
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Discarding info");
#endif
exif_discard_imageinfo(&ImageInfo);
#ifdef EXIF_DEBUG
php_error_docref1(NULL, (Z_TYPE_P(stream) == IS_RESOURCE ? "<stream>" : Z_STRVAL_P(stream)), E_NOTICE, "Done");
#endif
}
/* }}} */
/* {{{ Get the type of an image */
PHP_FUNCTION(exif_imagetype)
{
char *imagefile;
size_t imagefile_len;
php_stream * stream;
int itype = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "p", &imagefile, &imagefile_len) == FAILURE) {
RETURN_THROWS();
}
stream = php_stream_open_wrapper(imagefile, "rb", IGNORE_PATH|REPORT_ERRORS, NULL);
if (stream == NULL) {
RETURN_FALSE;
}
itype = php_getimagetype(stream, imagefile, NULL);
php_stream_close(stream);
if (itype == IMAGE_FILETYPE_UNKNOWN) {
RETURN_FALSE;
} else {
ZVAL_LONG(return_value, itype);
}
}
/* }}} */
#endif
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