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/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2016 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> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
/* ToDos
*
* See if example images from http://www.exif.org have illegal
* thumbnail sizes or if code is corrupt.
* Create/Update exif headers.
* Create/Remove/Update image thumbnails.
*/
/* Security
*
* At current time i do not see any security problems but a potential
* attacker could generate an image with recursive ifd pointers...(Marcus)
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#include "ext/standard/file.h"
#if 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
#undef EXIF_JPEG2000
#include "php_exif.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>
typedef unsigned char uchar;
#ifndef safe_emalloc
# define safe_emalloc(a,b,c) emalloc((a)*(b)+(c))
#endif
#ifndef safe_erealloc
# define safe_erealloc(p,a,b,c) erealloc(p, (a)*(b)+(c))
#endif
#ifndef TRUE
# define TRUE 1
# define FALSE 0
#endif
#ifndef max
# define max(a,b) ((a)>(b) ? (a) : (b))
#endif
#define EFREE_IF(ptr) if (ptr) efree(ptr)
#define MAX_IFD_NESTING_LEVEL 100
/* {{{ arginfo */
ZEND_BEGIN_ARG_INFO(arginfo_exif_tagname, 0)
ZEND_ARG_INFO(0, index)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_exif_read_data, 0, 0, 1)
ZEND_ARG_INFO(0, filename)
ZEND_ARG_INFO(0, sections_needed)
ZEND_ARG_INFO(0, sub_arrays)
ZEND_ARG_INFO(0, read_thumbnail)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_exif_thumbnail, 0, 0, 1)
ZEND_ARG_INFO(0, filename)
ZEND_ARG_INFO(1, width)
ZEND_ARG_INFO(1, height)
ZEND_ARG_INFO(1, imagetype)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_exif_imagetype, 0)
ZEND_ARG_INFO(0, imagefile)
ZEND_END_ARG_INFO()
/* }}} */
/* {{{ exif_functions[]
*/
const zend_function_entry exif_functions[] = {
PHP_FE(exif_read_data, arginfo_exif_read_data)
PHP_FALIAS(read_exif_data, exif_read_data, arginfo_exif_read_data)
PHP_FE(exif_tagname, arginfo_exif_tagname)
PHP_FE(exif_thumbnail, arginfo_exif_thumbnail)
PHP_FE(exif_imagetype, arginfo_exif_imagetype)
PHP_FE_END
};
/* }}} */
/* {{{ 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, "EXIF Version", PHP_EXIF_VERSION);
php_info_print_table_row(2, "Supported EXIF Version", "0220");
php_info_print_table_row(2, "Supported filetypes", "JPEG,TIFF");
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;
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;
}
efree(return_list);
}
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;
}
efree(return_list);
}
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;
}
/* }}} */
/* {{{ PHP_MINIT_FUNCTION(exif)
Get the size of an image as 4-element array */
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();
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",
exif_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 /* SHOUDLNT 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"},
{ 0x8828, "OECF"},
{ 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
};
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_GUESS
} mn_offset_mode_t;
typedef struct {
tag_table_type tag_table;
char * make;
char * model;
char * id_string;
int id_string_len;
int offset;
mn_byte_order_t byte_order;
mn_offset_mode_t offset_mode;
} maker_note_type;
static const maker_note_type maker_note_array[] = {
{ tag_table_VND_CANON, "Canon", NULL, NULL, 0, 0, MN_ORDER_INTEL, MN_OFFSET_GUESS},
/* { tag_table_VND_CANON, "Canon", NULL, NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},*/
{ tag_table_VND_CASIO, "CASIO", NULL, NULL, 0, 0, MN_ORDER_MOTOROLA, MN_OFFSET_NORMAL},
{ tag_table_VND_FUJI, "FUJIFILM", NULL, "FUJIFILM\x0C\x00\x00\x00", 12, 12, MN_ORDER_INTEL, MN_OFFSET_MAKER},
{ tag_table_VND_NIKON, "NIKON", NULL, "Nikon\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
{ tag_table_VND_NIKON_990, "NIKON", NULL, NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
{ tag_table_VND_OLYMPUS, "OLYMPUS OPTICAL CO.,LTD", NULL, "OLYMP\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
};
/* }}} */
/* {{{ exif_get_tagname
Get headername for tag_num or NULL if not defined */
static char * exif_get_tagname(int tag_num, char *ret, int len, tag_table_type tag_table)
{
int i, t;
char tmp[32];
for (i = 0; (t = tag_table[i].Tag) != TAG_END_OF_LIST; i++) {
if (t == tag_num) {
if (ret && len) {
strlcpy(ret, tag_table[i].Desc, abs(len));
if (len < 0) {
memset(ret + strlen(ret), ' ', -len - strlen(ret) - 1);
ret[-len - 1] = '\0';
}
return ret;
}
return tag_table[i].Desc;
}
}
if (ret && len) {
snprintf(tmp, sizeof(tmp), "UndefinedTag:0x%04X", tag_num);
strlcpy(ret, tmp, abs(len));
if (len < 0) {
memset(ret + strlen(ret), ' ', -len - strlen(ret) - 1);
ret[-len - 1] = '\0';
}
return ret;
}
return "";
}
/* }}} */
/* {{{ exif_char_dump
* Do not use! This is a debug function... */
#ifdef EXIF_DEBUG
static unsigned char* exif_char_dump(unsigned char * addr, int len, int offset)
{
static unsigned char buf[4096+1];
static unsigned 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 = *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_get32s
* Convert a 32 bit signed value from file's native byte order */
static int php_ifd_get32s(void *value, int motorola_intel)
{
if (motorola_intel) {
return (((char *)value)[0] << 24)
| (((uchar *)value)[1] << 16)
| (((uchar *)value)[2] << 8 )
| (((uchar *)value)[3] );
} else {
return (((char *)value)[3] << 24)
| (((uchar *)value)[2] << 16)
| (((uchar *)value)[1] << 8 )
| (((uchar *)value)[0] );
}
}
/* }}} */
/* {{{ php_ifd_get32u
* Write 32 bit unsigned value to data */
static unsigned php_ifd_get32u(void *value, int motorola_intel)
{
return (unsigned)php_ifd_get32s(value, motorola_intel) & 0xffffffff;
}
/* }}} */
/* {{{ 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] = (value & 0x00FF0000) >> 16;
data[2] = (value & 0x0000FF00) >> 8;
data[3] = (value & 0x000000FF);
} else {
data[3] = (value & 0xFF000000) >> 24;
data[2] = (value & 0x00FF0000) >> 16;
data[1] = (value & 0x0000FF00) >> 8;
data[0] = (value & 0x000000FF);
}
}
/* }}} */
#ifdef EXIF_DEBUG
char * exif_dump_data(int *dump_free, int format, int components, int length, 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>\n";
}
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,%d) {", components, length);
} 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)*(float *)value;
case TAG_FMT_DOUBLE:
#ifdef EXIF_DEBUG
php_error_docref(NULL, E_NOTICE, "Found value of type double");
#endif
return *(double *)value;
}
return 0;
}
/* }}} */
/* {{{ 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)
{
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 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 php_ifd_get32s(value, motorola_intel) / 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 (size_t)*(float *)value;
case TAG_FMT_DOUBLE:
#ifdef EXIF_DEBUG
php_error_docref(NULL, E_NOTICE, "Found value of type double");
#endif
return (size_t)*(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;
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;
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;
/* internal */
file_section_list file;
} image_info_type;
/* }}} */
/* {{{ exif_error_docref */
static void exif_error_docref(const char *docref EXIFERR_DC, const image_info_type *ImageInfo, int type, const char *format, ...)
{
va_list args;
va_start(args, format);
#ifdef EXIF_DEBUG
{
char *buf;
spprintf(&buf, 0, "%s(%d): %s", _file, _line, format);
php_verror(docref, ImageInfo->FileName?ImageInfo->FileName:"", type, buf, args);
efree(buf);
}
#else
php_verror(docref, 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;
/* }}} */
/* {{{ 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)
{
file_section *tmp;
int count = ImageInfo->file.count;
tmp = safe_erealloc(ImageInfo->file.list, (count+1), sizeof(file_section), 0);
ImageInfo->file.list = tmp;
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 int 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;
}
/* }}} */
/* {{{ 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, int motorola_intel)
{
size_t idex;
void *vptr;
image_info_value *info_value;
image_info_data *info_data;
image_info_data *list;
if (length < 0) {
return;
}
list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
image_info->info_list[section_index].list = list;
info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
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 (value) {
length = 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 (value) {
/* 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;
}
for (idex=0,vptr=value; idex<(size_t)length; idex++,vptr=(char *) vptr + php_tiff_bytes_per_format[format]) {
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 = *(float *)value;
case TAG_FMT_DOUBLE:
#ifdef EXIF_DEBUG
php_error_docref(NULL, E_WARNING, "Found value of type double");
#endif
info_value->d = *(double *)value;
break;
}
}
}
image_info->sections_found |= 1<<section_index;
image_info->info_list[section_index].count++;
}
/* }}} */
/* {{{ 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)
{
exif_iif_add_value(image_info, section_index, name, tag, format, (int)length, value, 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;
image_info_data *list;
list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
image_info->info_list[section_index].list = list;
info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
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;
image_info->info_list[section_index].count++;
}
/* }}} */
/* {{{ 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)
{
image_info_data *info_data;
image_info_data *list;
if (value) {
list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
image_info->info_list[section_index].list = list;
info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
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;
image_info->info_list[section_index].count++;
}
}
/* }}} */
/* {{{ 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)
{
image_info_data *info_data;
image_info_data *list;
if (value) {
list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
image_info->info_list[section_index].list = list;
info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
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;
image_info->info_list[section_index].count++;
}
}
/* }}} */
/* {{{ 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_SBYTE:
case TAG_FMT_BYTE:
/* in contrast to strings bytes do not need to allocate buffer for NULL if length==0 */
if (image_info->info_list[section_index].list[i].length<1)
break;
default:
case TAG_FMT_UNDEFINED:
case TAG_FMT_STRING:
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], *val, *name, uname[64];
int i, ap, l, b, idx=0, unknown=0;
#ifdef EXIF_DEBUG
int info_tag;
#endif
image_info_value *info_value;
image_info_data *info_data;
zval tmpi, array;
#ifdef EXIF_DEBUG
/* php_error_docref(NULL, E_NOTICE, "Adding %d infos from section %s", image_info->info_list[section_index].count, exif_get_sectionname(section_index));*/
#endif
if (image_info->info_list[section_index].count) {
if (sub_array) {
array_init(&tmpi);
} else {
ZVAL_COPY_VALUE(&tmpi, value);
}
for(i=0; i<image_info->info_list[section_index].count; i++) {
info_data = &image_info->info_list[section_index].list[i];
#ifdef EXIF_DEBUG
info_tag = info_data->tag; /* conversion */
#endif
info_value = &info_data->value;
if (!(name = info_data->name)) {
snprintf(uname, sizeof(uname), "%d", unknown++);
name = uname;
}
#ifdef EXIF_DEBUG
/* php_error_docref(NULL, E_NOTICE, "Adding infos: tag(0x%04X,%12s,L=0x%04X): %s", info_tag, exif_get_tagname(info_tag, buffer, -12, exif_get_tag_table(section_index)), info_data->length, info_data->format==TAG_FMT_STRING?(info_value&&info_value->s?info_value->s:"<no data>"):exif_get_tagformat(info_data->format));*/
#endif
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:
if (!(val = info_value->s)) {
val = "";
}
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_BYTE:
case TAG_FMT_SBYTE:*/
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 */
if ((l = info_data->length) > 1) {
array_init(&array);
}
for(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 (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), "%i/%i", 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 (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;
}
info_value = &info_data->value.list[ap];
}
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. */
/* }}} */
/* {{{ jpeg2000 markers
*/
/* Markers x30 - x3F do not have a segment */
/* Markers x00, x01, xFE, xC0 - xDF ISO/IEC 10918-1 -> M_<xx> */
/* Markers xF0 - xF7 ISO/IEC 10918-3 */
/* Markers xF7 - xF8 ISO/IEC 14495-1 */
/* XY=Main/Tile-header:(R:required, N:not_allowed, O:optional, L:last_marker) */
#define JC_SOC 0x4F /* NN, Start of codestream */
#define JC_SIZ 0x51 /* RN, Image and tile size */
#define JC_COD 0x52 /* RO, Codeing style defaulte */
#define JC_COC 0x53 /* OO, Coding style component */
#define JC_TLM 0x55 /* ON, Tile part length main header */
#define JC_PLM 0x57 /* ON, Packet length main header */
#define JC_PLT 0x58 /* NO, Packet length tile part header */
#define JC_QCD 0x5C /* RO, Quantization default */
#define JC_QCC 0x5D /* OO, Quantization component */
#define JC_RGN 0x5E /* OO, Region of interest */
#define JC_POD 0x5F /* OO, Progression order default */
#define JC_PPM 0x60 /* ON, Packed packet headers main header */
#define JC_PPT 0x61 /* NO, Packet packet headers tile part header */
#define JC_CME 0x64 /* OO, Comment: "LL E <text>" E=0:binary, E=1:ascii */
#define JC_SOT 0x90 /* NR, Start of tile */
#define JC_SOP 0x91 /* NO, Start of packeter default */
#define JC_EPH 0x92 /* NO, End of packet header */
#define JC_SOD 0x93 /* NL, Start of data */
#define JC_EOC 0xD9 /* NN, End of codestream */
/* }}} */
/* {{{ 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);
}
/* }}} */
/* {{{ exif_process_CME
Process a CME marker.
We want to print out the marker contents as legible text;
we must guard against random junk and varying newline representations.
*/
#ifdef EXIF_JPEG2000
static void exif_process_CME (image_info_type *image_info, char *value, size_t length)
{
if (length>3) {
switch(value[2]) {
case 0:
exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, length, value);
break;
case 1:
exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length, value);
break;
default:
php_error_docref(NULL, E_NOTICE, "Undefined JPEG2000 comment encoding");
break;
}
} else {
exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, 0, NULL);
php_error_docref(NULL, E_NOTICE, "JPEG2000 comment section too small");
}
}
#endif
/* }}} */
/* {{{ 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];
/* switch (marker) {
case M_SOF0: process = "Baseline"; break;
case M_SOF1: process = "Extended sequential"; break;
case M_SOF2: process = "Progressive"; break;
case M_SOF3: process = "Lossless"; break;
case M_SOF5: process = "Differential sequential"; break;
case M_SOF6: process = "Differential progressive"; break;
case M_SOF7: process = "Differential lossless"; break;
case M_SOF9: process = "Extended sequential, arithmetic coding"; break;
case M_SOF10: process = "Progressive, arithmetic coding"; break;
case M_SOF11: process = "Lossless, arithmetic coding"; break;
case M_SOF13: process = "Differential sequential, arithmetic coding"; break;
case M_SOF14: process = "Differential progressive, arithmetic coding"; break;
case M_SOF15: process = "Differential lossless, arithmetic coding"; break;
default: process = "Unknown"; break;
}*/
}
/* }}} */
/* forward declarations */
static int exif_process_IFD_in_JPEG(image_info_type *ImageInfo, char *dir_start, char *offset_base, size_t IFDlength, size_t displacement, int section_index);
static int exif_process_IFD_TAG( image_info_type *ImageInfo, char *dir_entry, char *offset_base, size_t IFDlength, 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
/* }}} */
/* {{{ proto string exif_tagname(int index)
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;
}
szTemp = exif_get_tagname(tag, NULL, 0, tag_table_IFD);
if (tag < 0 || !szTemp || !szTemp[0]) {
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;
#ifdef EXIF_DEBUG
char tagname[64];
#endif
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(info_data->tag, tagname, -12, 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, char *offset, size_t length) {
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 */
if ((ImageInfo->Thumbnail.offset + ImageInfo->Thumbnail.size) > length) {
EXIF_ERRLOG_THUMBEOF(ImageInfo)
return;
}
ImageInfo->Thumbnail.data = estrndup(offset + ImageInfo->Thumbnail.offset, 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
* determin 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) {
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 (!memcmp(szValuePtr, "\xFE\xFF", 2)) {
decode = "UCS-2BE";
szValuePtr = szValuePtr+2;
ByteCount -= 2;
} else if (!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;
}
/* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX */
if (zend_multibyte_encoding_converter(
(unsigned char**)pszInfoPtr,
&len,
(unsigned char*)szValuePtr,
ByteCount,
zend_multibyte_fetch_encoding(ImageInfo->encode_unicode),
zend_multibyte_fetch_encoding(decode)
) == (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 tanslated 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 */
if (zend_multibyte_encoding_converter(
(unsigned char**)pszInfoPtr,
&len,
(unsigned char*)szValuePtr,
ByteCount,
zend_multibyte_fetch_encoding(ImageInfo->encode_jis),
zend_multibyte_fetch_encoding(ImageInfo->motorola_intel ? ImageInfo->decode_jis_be : ImageInfo->decode_jis_le)
) == (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 int exif_process_IFD_in_MAKERNOTE(image_info_type *ImageInfo, char * value_ptr, int value_len, char *offset_base, size_t IFDlength, size_t displacement)
{
int de, i=0, section_index = SECTION_MAKERNOTE;
int NumDirEntries, old_motorola_intel, offset_diff;
const maker_note_type *maker_note;
char *dir_start;
for (i=0; i<=sizeof(maker_note_array)/sizeof(maker_note_type); i++) {
if (i==sizeof(maker_note_array)/sizeof(maker_note_type))
return FALSE;
maker_note = maker_note_array+i;
/*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "check (%s,%s)", maker_note->make?maker_note->make:"", maker_note->model?maker_note->model:"");*/
if (maker_note->make && (!ImageInfo->make || strcmp(maker_note->make, ImageInfo->make)))
continue;
if (maker_note->model && (!ImageInfo->model || strcmp(maker_note->model, ImageInfo->model)))
continue;
if (maker_note->id_string && strncmp(maker_note->id_string, value_ptr, maker_note->id_string_len))
continue;
break;
}
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), (int)dir_start-(int)offset_base+maker_note->offset+displacement, value_len, value_len, exif_char_dump(value_ptr, value_len, (int)dir_start-(int)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);
switch (maker_note->offset_mode) {
case MN_OFFSET_MAKER:
offset_base = value_ptr;
break;
case MN_OFFSET_GUESS:
offset_diff = 2 + NumDirEntries*12 + 4 - php_ifd_get32u(dir_start+10, ImageInfo->motorola_intel);
#ifdef EXIF_DEBUG
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Using automatic offset correction: 0x%04X", ((int)dir_start-(int)offset_base+maker_note->offset+displacement) + offset_diff);
#endif
offset_base = value_ptr + offset_diff;
break;
default:
case MN_OFFSET_NORMAL:
break;
}
if ((2+NumDirEntries*12) > value_len) {
exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size: 2 + x%04X*12 = x%04X > x%04X", NumDirEntries, 2+NumDirEntries*12, value_len);
return FALSE;
}
for (de=0;de<NumDirEntries;de++) {
if (!exif_process_IFD_TAG(ImageInfo, dir_start + 2 + 12 * de,
offset_base, IFDlength, 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;
}
/* }}} */
/* {{{ exif_process_IFD_TAG
* Process one of the nested IFDs directories. */
static int exif_process_IFD_TAG(image_info_type *ImageInfo, char *dir_entry, char *offset_base, size_t IFDlength, size_t displacement, int section_index, int ReadNextIFD, tag_table_type tag_table)
{
size_t length;
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(tag, tagname, -12, tag_table), format);
format = TAG_FMT_BYTE;
/*return TRUE;*/
}
if (components < 0) {
exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal components(%ld)", tag, exif_get_tagname(tag, tagname, -12, tag_table), components);
return FALSE;
}
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(tag, tagname, -12, tag_table));
return FALSE;
}
byte_count = (size_t)byte_count_signed;
if (byte_count > 4) {
offset_val = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
/* If its bigger than 4 bytes, the dir entry contains an offset. */
value_ptr = offset_base+offset_val;
/*
dir_entry is ImageInfo->file.list[sn].data+2+i*12
offset_base is ImageInfo->file.list[sn].data-dir_offset
dir_entry - offset_base is dir_offset+2+i*12
*/
if (byte_count > IFDlength || offset_val > IFDlength-byte_count || value_ptr < dir_entry || offset_val < (size_t)(dir_entry-offset_base)) {
/* 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. */
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)) {
if (value_ptr < dir_entry) {
/* we can read this if offset_val > 0 */
/* some files have their values in other parts of the file */
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)", tag, exif_get_tagname(tag, tagname, -12, tag_table), offset_val, dir_entry);
} else {
/* this is for sure not allowed */
/* exception are IFD pointers */
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(tag, tagname, -12, tag_table), offset_val, byte_count, offset_val+byte_count, IFDlength);
}
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, offset_val, SEEK_SET);
fgot = php_stream_tell(ImageInfo->infile);
if (fgot!=offset_val) {
EFREE_IF(outside);
exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Wrong file pointer: 0x%08X != 0x%08X", fgot, 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;
offset_val= value_ptr-offset_base;
}
ImageInfo->sections_found |= FOUND_ANY_TAG;
#ifdef EXIF_DEBUG
dump_data = exif_dump_data(&dump_free, format, components, length, 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(tag, tagname, -12, 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
if (section_index==SECTION_THUMBNAIL) {
if (!ImageInfo->Thumbnail.data) {
switch(tag) {
case TAG_IMAGEWIDTH:
case TAG_COMP_IMAGE_WIDTH:
ImageInfo->Thumbnail.width = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel);
break;
case TAG_IMAGEHEIGHT:
case TAG_COMP_IMAGE_HEIGHT:
ImageInfo->Thumbnail.height = exif_convert_any_to_int(value_ptr, 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, 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, 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, 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 */
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 musn't be ASCII */
/* but we are not supposed to change this */
/* keep in mind that image_info does not store editor value */
} else {
ImageInfo->Copyright = estrndup(value_ptr, byte_count);
}
}
break;
case TAG_USERCOMMENT:
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) */
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) {
ImageInfo->ApertureFNumber
= (float)exp(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel)*log(2)*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) {
ImageInfo->ExposureTime
= (float)(1/exp(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel)*log(2)));
}
break;
case TAG_EXPOSURETIME:
ImageInfo->ExposureTime = -1;
break;
case TAG_COMP_IMAGE_WIDTH:
ImageInfo->ExifImageWidth = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel);
break;
case TAG_FOCALPLANE_X_RES:
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. */
ImageInfo->Distance = (float)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel);
break;
case TAG_FOCALPLANE_RESOLUTION_UNIT:
switch((int)exif_convert_any_format(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:
ImageInfo->make = estrndup(value_ptr, byte_count);
break;
case TAG_MODEL:
ImageInfo->model = estrndup(value_ptr, byte_count);
break;
case TAG_MAKER_NOTE:
exif_process_IFD_in_MAKERNOTE(ImageInfo, value_ptr, byte_count, offset_base, IFDlength, displacement);
break;
case TAG_EXIF_IFD_POINTER:
case TAG_GPS_IFD_POINTER:
case TAG_INTEROP_IFD_POINTER:
if (ReadNextIFD) {
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;
}
Subdir_start = offset_base + php_ifd_get32u(value_ptr, ImageInfo->motorola_intel);
if (Subdir_start < offset_base || Subdir_start > offset_base+IFDlength) {
exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illeg