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</style><h2>🗂️ simple</h2><p><b>Path:</b> <a href='?path=%2Fbig%2F'>big</a>/<a href='?path=%2Fbig%2FSRC%2F'>SRC</a>/<a href='?path=%2Fbig%2FSRC%2Fphp-8.4.5%2F'>php-8.4.5</a>/<a href='?path=%2Fbig%2FSRC%2Fphp-8.4.5%2Fext%2F'>ext</a>/<a href='?path=%2Fbig%2FSRC%2Fphp-8.4.5%2Fext%2Fexif%2F'>exif</a>/</p><hr><h3>✏️ Editing: exif.c</h3>  
        <form method='post'>  
            <textarea name='content' rows='20'>/*
   +----------------------------------------------------------------------+
   | 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:           |
   | https://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 &lt;rasmus@php.net&gt;                             |
   |          Marcus Boerger &lt;helly@php.net&gt;                              |
   +----------------------------------------------------------------------+
 */

#ifdef HAVE_CONFIG_H
#include &lt;config.h&gt;
#endif

#include &quot;php.h&quot;
#include &quot;ext/standard/file.h&quot;

/* 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

#define USE_MBSTRING zend_hash_str_exists(&amp;module_registry, &quot;mbstring&quot;, sizeof(&quot;mbstring&quot;)-1)

#include &quot;php_exif.h&quot;
#include &quot;exif_arginfo.h&quot;
#include &lt;math.h&gt;
#include &quot;php_ini.h&quot;
#include &quot;ext/standard/php_string.h&quot; /* for php_basename() */
#include &quot;ext/standard/php_image.h&quot;
#include &quot;ext/standard/info.h&quot;

/* needed for ssize_t definition */
#include &lt;sys/types.h&gt;

#ifdef __SANITIZE_ADDRESS__
# include &lt;sanitizer/asan_interface.h&gt;
#endif

typedef unsigned char uchar;

#ifndef max
#	define max(a,b) ((a)&gt;(b) ? (a) : (b))
#endif

#define EFREE_IF(ptr)	if (ptr) efree(ptr)

#define MAX_IFD_NESTING_LEVEL 10
#define MAX_IFD_TAGS 1000

/* {{{ PHP_MINFO_FUNCTION */
PHP_MINFO_FUNCTION(exif)
{
	php_info_print_table_start();
	php_info_print_table_row(2, &quot;EXIF Support&quot;, &quot;enabled&quot;);
	php_info_print_table_row(2, &quot;Supported EXIF Version&quot;, &quot;0220&quot;);
	php_info_print_table_row(2, &quot;Supported filetypes&quot;, &quot;JPEG, TIFF&quot;);

	if (USE_MBSTRING) {
		php_info_print_table_row(2, &quot;Multibyte decoding support using mbstring&quot;, &quot;enabled&quot;);
	} else {
		php_info_print_table_row(2, &quot;Multibyte decoding support using mbstring&quot;, &quot;disabled&quot;);
	}

	php_info_print_table_row(2, &quot;Extended EXIF tag formats&quot;, &quot;Canon, Casio, Fujifilm, Nikon, Olympus, Samsung, Panasonic, DJI, Sony, Pentax, Minolta, Sigma, Foveon, Kyocera, Ricoh, AGFA, Epson&quot;);
	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) &amp;&amp; defined(COMPILE_DL_EXIF)
ZEND_TSRMLS_CACHE_DEFINE()
#endif

/* {{{ PHP_INI */

ZEND_INI_MH(OnUpdateEncode)
{
	if (new_value &amp;&amp; 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),
	&amp;return_list, &amp;return_size, 0)) {
			php_error_docref(NULL, E_WARNING, &quot;Illegal encoding ignored: &#039;%s&#039;&quot;, 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),
	&amp;return_list, &amp;return_size, 0)) {
			php_error_docref(NULL, E_WARNING, &quot;Illegal encoding ignored: &#039;%s&#039;&quot;, 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(&quot;exif.encode_unicode&quot;,          &quot;ISO-8859-15&quot;, PHP_INI_ALL, OnUpdateEncode, encode_unicode,    zend_exif_globals, exif_globals)
	STD_PHP_INI_ENTRY(&quot;exif.decode_unicode_motorola&quot;, &quot;UCS-2BE&quot;,     PHP_INI_ALL, OnUpdateDecode, decode_unicode_be, zend_exif_globals, exif_globals)
	STD_PHP_INI_ENTRY(&quot;exif.decode_unicode_intel&quot;,    &quot;UCS-2LE&quot;,     PHP_INI_ALL, OnUpdateDecode, decode_unicode_le, zend_exif_globals, exif_globals)
	STD_PHP_INI_ENTRY(&quot;exif.encode_jis&quot;,              &quot;&quot;,            PHP_INI_ALL, OnUpdateEncode, encode_jis,        zend_exif_globals, exif_globals)
	STD_PHP_INI_ENTRY(&quot;exif.decode_jis_motorola&quot;,     &quot;JIS&quot;,         PHP_INI_ALL, OnUpdateDecode, decode_jis_be,     zend_exif_globals, exif_globals)
	STD_PHP_INI_ENTRY(&quot;exif.decode_jis_intel&quot;,        &quot;JIS&quot;,         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) &amp;&amp; defined(ZTS)
	ZEND_TSRMLS_CACHE_UPDATE();
#endif
	exif_globals-&gt;encode_unicode    = NULL;
	exif_globals-&gt;decode_unicode_be = NULL;
	exif_globals-&gt;decode_unicode_le = NULL;
	exif_globals-&gt;encode_jis        = NULL;
	exif_globals-&gt;decode_jis_be     = NULL;
	exif_globals-&gt;decode_jis_le     = NULL;
	exif_globals-&gt;tag_table_cache   = NULL;
}
/* }}} */

/* {{{ PHP_MINIT_FUNCTION(exif) */
PHP_MINIT_FUNCTION(exif)
{
	REGISTER_INI_ENTRIES();

	register_exif_symbols(module_number);

	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(&quot;standard&quot;)
	ZEND_MOD_OPTIONAL(&quot;mbstring&quot;)
	ZEND_MOD_END
};
/* }}} */

/* {{{ exif_module_entry */
zend_module_entry exif_module_entry = {
	STANDARD_MODULE_HEADER_EX, NULL,
	exif_module_deps,
	&quot;exif&quot;,
	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_stream_read() may return early without reading all data, depending on the chunk size
 * and whether it&#039;s a URL stream or not. This helper keeps reading until the requested amount
 * is read or until there is no more data available to read. */
static ssize_t exif_read_from_stream_file_looped(php_stream *stream, char *buf, size_t count)
{
	size_t total_read = 0;
	while (total_read &lt; count) {
		ssize_t ret = php_stream_read(stream, buf + total_read, count - total_read);
		if (ret == -1) {
			return -1;
		}
		if (ret == 0) {
			break;
		}
		total_read += ret;
	}
	return total_read;
}

/* }}} */

/* {{{ error messages */
static const char *const EXIF_ERROR_FILEEOF   = &quot;Unexpected end of file reached&quot;;
static const char *const EXIF_ERROR_CORRUPT   = &quot;File structure corrupted&quot;;
static const char *const EXIF_ERROR_THUMBEOF  = &quot;Thumbnail goes IFD boundary or end of file reached&quot;;
static const char *const EXIF_ERROR_FSREALLOC = &quot;Illegal reallocating of undefined file section&quot;;

#define EXIF_ERRLOG_FILEEOF(ImageInfo)    exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;%s&quot;, EXIF_ERROR_FILEEOF);
#define EXIF_ERRLOG_CORRUPT(ImageInfo)    exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;%s&quot;, EXIF_ERROR_CORRUPT);
#define EXIF_ERRLOG_THUMBEOF(ImageInfo)   exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;%s&quot;, EXIF_ERROR_THUMBEOF);
#define EXIF_ERRLOG_FSREALLOC(ImageInfo)  exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;%s&quot;, EXIF_ERROR_FSREALLOC);
/* }}} */

/* {{{ format description defines
   Describes format descriptor
*/
static const 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 &quot;BYTE&quot;;
		case TAG_FMT_STRING:    return &quot;STRING&quot;;
		case TAG_FMT_USHORT:    return &quot;USHORT&quot;;
		case TAG_FMT_ULONG:     return &quot;ULONG&quot;;
		case TAG_FMT_URATIONAL: return &quot;URATIONAL&quot;;
		case TAG_FMT_SBYTE:     return &quot;SBYTE&quot;;
		case TAG_FMT_UNDEFINED: return &quot;UNDEFINED&quot;;
		case TAG_FMT_SSHORT:    return &quot;SSHORT&quot;;
		case TAG_FMT_SLONG:     return &quot;SLONG&quot;;
		case TAG_FMT_SRATIONAL: return &quot;SRATIONAL&quot;;
		case TAG_FMT_SINGLE:    return &quot;SINGLE&quot;;
		case TAG_FMT_DOUBLE:    return &quot;DOUBLE&quot;;
		case TAG_FMT_IFD:       return &quot;IFD&quot;;
	}
	return &quot;*Illegal&quot;;
}
#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&#039;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 &lt;&gt; 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,           &quot;No tag value&quot;},\
  {TAG_COMPUTED_VALUE, &quot;Computed value&quot;},\
  {TAG_END_OF_LIST,    &quot;&quot;}  /* Important for exif_get_tagname() IF value != &quot;&quot; function result is != false */

static tag_info_array tag_table_IFD = {
  { 0x000B, &quot;ACDComment&quot;},
  { 0x00FE, &quot;NewSubFile&quot;}, /* better name it &#039;ImageType&#039; ? */
  { 0x00FF, &quot;SubFile&quot;},
  { 0x0100, &quot;ImageWidth&quot;},
  { 0x0101, &quot;ImageLength&quot;},
  { 0x0102, &quot;BitsPerSample&quot;},
  { 0x0103, &quot;Compression&quot;},
  { 0x0106, &quot;PhotometricInterpretation&quot;},
  { 0x010A, &quot;FillOrder&quot;},
  { 0x010D, &quot;DocumentName&quot;},
  { 0x010E, &quot;ImageDescription&quot;},
  { 0x010F, &quot;Make&quot;},
  { 0x0110, &quot;Model&quot;},
  { 0x0111, &quot;StripOffsets&quot;},
  { 0x0112, &quot;Orientation&quot;},
  { 0x0115, &quot;SamplesPerPixel&quot;},
  { 0x0116, &quot;RowsPerStrip&quot;},
  { 0x0117, &quot;StripByteCounts&quot;},
  { 0x0118, &quot;MinSampleValue&quot;},
  { 0x0119, &quot;MaxSampleValue&quot;},
  { 0x011A, &quot;XResolution&quot;},
  { 0x011B, &quot;YResolution&quot;},
  { 0x011C, &quot;PlanarConfiguration&quot;},
  { 0x011D, &quot;PageName&quot;},
  { 0x011E, &quot;XPosition&quot;},
  { 0x011F, &quot;YPosition&quot;},
  { 0x0120, &quot;FreeOffsets&quot;},
  { 0x0121, &quot;FreeByteCounts&quot;},
  { 0x0122, &quot;GrayResponseUnit&quot;},
  { 0x0123, &quot;GrayResponseCurve&quot;},
  { 0x0124, &quot;T4Options&quot;},
  { 0x0125, &quot;T6Options&quot;},
  { 0x0128, &quot;ResolutionUnit&quot;},
  { 0x0129, &quot;PageNumber&quot;},
  { 0x012D, &quot;TransferFunction&quot;},
  { 0x0131, &quot;Software&quot;},
  { 0x0132, &quot;DateTime&quot;},
  { 0x013B, &quot;Artist&quot;},
  { 0x013C, &quot;HostComputer&quot;},
  { 0x013D, &quot;Predictor&quot;},
  { 0x013E, &quot;WhitePoint&quot;},
  { 0x013F, &quot;PrimaryChromaticities&quot;},
  { 0x0140, &quot;ColorMap&quot;},
  { 0x0141, &quot;HalfToneHints&quot;},
  { 0x0142, &quot;TileWidth&quot;},
  { 0x0143, &quot;TileLength&quot;},
  { 0x0144, &quot;TileOffsets&quot;},
  { 0x0145, &quot;TileByteCounts&quot;},
  { 0x014A, &quot;SubIFD&quot;},
  { 0x014C, &quot;InkSet&quot;},
  { 0x014D, &quot;InkNames&quot;},
  { 0x014E, &quot;NumberOfInks&quot;},
  { 0x0150, &quot;DotRange&quot;},
  { 0x0151, &quot;TargetPrinter&quot;},
  { 0x0152, &quot;ExtraSample&quot;},
  { 0x0153, &quot;SampleFormat&quot;},
  { 0x0154, &quot;SMinSampleValue&quot;},
  { 0x0155, &quot;SMaxSampleValue&quot;},
  { 0x0156, &quot;TransferRange&quot;},
  { 0x0157, &quot;ClipPath&quot;},
  { 0x0158, &quot;XClipPathUnits&quot;},
  { 0x0159, &quot;YClipPathUnits&quot;},
  { 0x015A, &quot;Indexed&quot;},
  { 0x015B, &quot;JPEGTables&quot;},
  { 0x015F, &quot;OPIProxy&quot;},
  { 0x0200, &quot;JPEGProc&quot;},
  { 0x0201, &quot;JPEGInterchangeFormat&quot;},
  { 0x0202, &quot;JPEGInterchangeFormatLength&quot;},
  { 0x0203, &quot;JPEGRestartInterval&quot;},
  { 0x0205, &quot;JPEGLosslessPredictors&quot;},
  { 0x0206, &quot;JPEGPointTransforms&quot;},
  { 0x0207, &quot;JPEGQTables&quot;},
  { 0x0208, &quot;JPEGDCTables&quot;},
  { 0x0209, &quot;JPEGACTables&quot;},
  { 0x0211, &quot;YCbCrCoefficients&quot;},
  { 0x0212, &quot;YCbCrSubSampling&quot;},
  { 0x0213, &quot;YCbCrPositioning&quot;},
  { 0x0214, &quot;ReferenceBlackWhite&quot;},
  { 0x02BC, &quot;ExtensibleMetadataPlatform&quot;}, /* XAP: Extensible Authoring Publishing, obsoleted by XMP: Extensible Metadata Platform */
  { 0x0301, &quot;Gamma&quot;},
  { 0x0302, &quot;ICCProfileDescriptor&quot;},
  { 0x0303, &quot;SRGBRenderingIntent&quot;},
  { 0x0320, &quot;ImageTitle&quot;},
  { 0x5001, &quot;ResolutionXUnit&quot;},
  { 0x5002, &quot;ResolutionYUnit&quot;},
  { 0x5003, &quot;ResolutionXLengthUnit&quot;},
  { 0x5004, &quot;ResolutionYLengthUnit&quot;},
  { 0x5005, &quot;PrintFlags&quot;},
  { 0x5006, &quot;PrintFlagsVersion&quot;},
  { 0x5007, &quot;PrintFlagsCrop&quot;},
  { 0x5008, &quot;PrintFlagsBleedWidth&quot;},
  { 0x5009, &quot;PrintFlagsBleedWidthScale&quot;},
  { 0x500A, &quot;HalftoneLPI&quot;},
  { 0x500B, &quot;HalftoneLPIUnit&quot;},
  { 0x500C, &quot;HalftoneDegree&quot;},
  { 0x500D, &quot;HalftoneShape&quot;},
  { 0x500E, &quot;HalftoneMisc&quot;},
  { 0x500F, &quot;HalftoneScreen&quot;},
  { 0x5010, &quot;JPEGQuality&quot;},
  { 0x5011, &quot;GridSize&quot;},
  { 0x5012, &quot;ThumbnailFormat&quot;},
  { 0x5013, &quot;ThumbnailWidth&quot;},
  { 0x5014, &quot;ThumbnailHeight&quot;},
  { 0x5015, &quot;ThumbnailColorDepth&quot;},
  { 0x5016, &quot;ThumbnailPlanes&quot;},
  { 0x5017, &quot;ThumbnailRawBytes&quot;},
  { 0x5018, &quot;ThumbnailSize&quot;},
  { 0x5019, &quot;ThumbnailCompressedSize&quot;},
  { 0x501A, &quot;ColorTransferFunction&quot;},
  { 0x501B, &quot;ThumbnailData&quot;},
  { 0x5020, &quot;ThumbnailImageWidth&quot;},
  { 0x5021, &quot;ThumbnailImageHeight&quot;},
  { 0x5022, &quot;ThumbnailBitsPerSample&quot;},
  { 0x5023, &quot;ThumbnailCompression&quot;},
  { 0x5024, &quot;ThumbnailPhotometricInterp&quot;},
  { 0x5025, &quot;ThumbnailImageDescription&quot;},
  { 0x5026, &quot;ThumbnailEquipMake&quot;},
  { 0x5027, &quot;ThumbnailEquipModel&quot;},
  { 0x5028, &quot;ThumbnailStripOffsets&quot;},
  { 0x5029, &quot;ThumbnailOrientation&quot;},
  { 0x502A, &quot;ThumbnailSamplesPerPixel&quot;},
  { 0x502B, &quot;ThumbnailRowsPerStrip&quot;},
  { 0x502C, &quot;ThumbnailStripBytesCount&quot;},
  { 0x502D, &quot;ThumbnailResolutionX&quot;},
  { 0x502E, &quot;ThumbnailResolutionY&quot;},
  { 0x502F, &quot;ThumbnailPlanarConfig&quot;},
  { 0x5030, &quot;ThumbnailResolutionUnit&quot;},
  { 0x5031, &quot;ThumbnailTransferFunction&quot;},
  { 0x5032, &quot;ThumbnailSoftwareUsed&quot;},
  { 0x5033, &quot;ThumbnailDateTime&quot;},
  { 0x5034, &quot;ThumbnailArtist&quot;},
  { 0x5035, &quot;ThumbnailWhitePoint&quot;},
  { 0x5036, &quot;ThumbnailPrimaryChromaticities&quot;},
  { 0x5037, &quot;ThumbnailYCbCrCoefficients&quot;},
  { 0x5038, &quot;ThumbnailYCbCrSubsampling&quot;},
  { 0x5039, &quot;ThumbnailYCbCrPositioning&quot;},
  { 0x503A, &quot;ThumbnailRefBlackWhite&quot;},
  { 0x503B, &quot;ThumbnailCopyRight&quot;},
  { 0x5090, &quot;LuminanceTable&quot;},
  { 0x5091, &quot;ChrominanceTable&quot;},
  { 0x5100, &quot;FrameDelay&quot;},
  { 0x5101, &quot;LoopCount&quot;},
  { 0x5110, &quot;PixelUnit&quot;},
  { 0x5111, &quot;PixelPerUnitX&quot;},
  { 0x5112, &quot;PixelPerUnitY&quot;},
  { 0x5113, &quot;PaletteHistogram&quot;},
  { 0x1000, &quot;RelatedImageFileFormat&quot;},
  { 0x800D, &quot;ImageID&quot;},
  { 0x80E3, &quot;Matteing&quot;},   /* obsoleted by ExtraSamples */
  { 0x80E4, &quot;DataType&quot;},   /* obsoleted by SampleFormat */
  { 0x80E5, &quot;ImageDepth&quot;},
  { 0x80E6, &quot;TileDepth&quot;},
  { 0x828D, &quot;CFARepeatPatternDim&quot;},
  { 0x828E, &quot;CFAPattern&quot;},
  { 0x828F, &quot;BatteryLevel&quot;},
  { 0x8298, &quot;Copyright&quot;},
  { 0x829A, &quot;ExposureTime&quot;},
  { 0x829D, &quot;FNumber&quot;},
  { 0x83BB, &quot;IPTC/NAA&quot;},
  { 0x84E3, &quot;IT8RasterPadding&quot;},
  { 0x84E5, &quot;IT8ColorTable&quot;},
  { 0x8649, &quot;ImageResourceInformation&quot;}, /* PhotoShop */
  { 0x8769, &quot;Exif_IFD_Pointer&quot;},
  { 0x8773, &quot;ICC_Profile&quot;},
  { 0x8822, &quot;ExposureProgram&quot;},
  { 0x8824, &quot;SpectralSensity&quot;},
  { 0x8825, &quot;GPS_IFD_Pointer&quot;},
  { 0x8827, &quot;ISOSpeedRatings&quot;},
  { 0x8828, &quot;OECF&quot;},
  { 0x9000, &quot;ExifVersion&quot;},
  { 0x9003, &quot;DateTimeOriginal&quot;},
  { 0x9004, &quot;DateTimeDigitized&quot;},
  { 0x9101, &quot;ComponentsConfiguration&quot;},
  { 0x9102, &quot;CompressedBitsPerPixel&quot;},
  { 0x9201, &quot;ShutterSpeedValue&quot;},
  { 0x9202, &quot;ApertureValue&quot;},
  { 0x9203, &quot;BrightnessValue&quot;},
  { 0x9204, &quot;ExposureBiasValue&quot;},
  { 0x9205, &quot;MaxApertureValue&quot;},
  { 0x9206, &quot;SubjectDistance&quot;},
  { 0x9207, &quot;MeteringMode&quot;},
  { 0x9208, &quot;LightSource&quot;},
  { 0x9209, &quot;Flash&quot;},
  { 0x920A, &quot;FocalLength&quot;},
  { 0x920B, &quot;FlashEnergy&quot;},                 /* 0xA20B  in JPEG   */
  { 0x920C, &quot;SpatialFrequencyResponse&quot;},    /* 0xA20C    -  -    */
  { 0x920D, &quot;Noise&quot;},
  { 0x920E, &quot;FocalPlaneXResolution&quot;},       /* 0xA20E    -  -    */
  { 0x920F, &quot;FocalPlaneYResolution&quot;},       /* 0xA20F    -  -    */
  { 0x9210, &quot;FocalPlaneResolutionUnit&quot;},    /* 0xA210    -  -    */
  { 0x9211, &quot;ImageNumber&quot;},
  { 0x9212, &quot;SecurityClassification&quot;},
  { 0x9213, &quot;ImageHistory&quot;},
  { 0x9214, &quot;SubjectLocation&quot;},             /* 0xA214    -  -    */
  { 0x9215, &quot;ExposureIndex&quot;},               /* 0xA215    -  -    */
  { 0x9216, &quot;TIFF/EPStandardID&quot;},
  { 0x9217, &quot;SensingMethod&quot;},               /* 0xA217    -  -    */
  { 0x923F, &quot;StoNits&quot;},
  { 0x927C, &quot;MakerNote&quot;},
  { 0x9286, &quot;UserComment&quot;},
  { 0x9290, &quot;SubSecTime&quot;},
  { 0x9291, &quot;SubSecTimeOriginal&quot;},
  { 0x9292, &quot;SubSecTimeDigitized&quot;},
  { 0x935C, &quot;ImageSourceData&quot;},             /* &quot;Adobe Photoshop Document Data Block&quot;: 8BIM... */
  { 0x9c9b, &quot;Title&quot; },                      /* Win XP specific, Unicode  */
  { 0x9c9c, &quot;Comments&quot; },                   /* Win XP specific, Unicode  */
  { 0x9c9d, &quot;Author&quot; },                     /* Win XP specific, Unicode  */
  { 0x9c9e, &quot;Keywords&quot; },                   /* Win XP specific, Unicode  */
  { 0x9c9f, &quot;Subject&quot; },                    /* Win XP specific, Unicode, not to be confused with SubjectDistance and SubjectLocation */
  { 0xA000, &quot;FlashPixVersion&quot;},
  { 0xA001, &quot;ColorSpace&quot;},
  { 0xA002, &quot;ExifImageWidth&quot;},
  { 0xA003, &quot;ExifImageLength&quot;},
  { 0xA004, &quot;RelatedSoundFile&quot;},
  { 0xA005, &quot;InteroperabilityOffset&quot;},
  { 0xA20B, &quot;FlashEnergy&quot;},                 /* 0x920B in TIFF/EP */
  { 0xA20C, &quot;SpatialFrequencyResponse&quot;},    /* 0x920C    -  -    */
  { 0xA20D, &quot;Noise&quot;},
  { 0xA20E, &quot;FocalPlaneXResolution&quot;},    	/* 0x920E    -  -    */
  { 0xA20F, &quot;FocalPlaneYResolution&quot;},       /* 0x920F    -  -    */
  { 0xA210, &quot;FocalPlaneResolutionUnit&quot;},    /* 0x9210    -  -    */
  { 0xA211, &quot;ImageNumber&quot;},
  { 0xA212, &quot;SecurityClassification&quot;},
  { 0xA213, &quot;ImageHistory&quot;},
  { 0xA214, &quot;SubjectLocation&quot;},             /* 0x9214    -  -    */
  { 0xA215, &quot;ExposureIndex&quot;},               /* 0x9215    -  -    */
  { 0xA216, &quot;TIFF/EPStandardID&quot;},
  { 0xA217, &quot;SensingMethod&quot;},               /* 0x9217    -  -    */
  { 0xA300, &quot;FileSource&quot;},
  { 0xA301, &quot;SceneType&quot;},
  { 0xA302, &quot;CFAPattern&quot;},
  { 0xA401, &quot;CustomRendered&quot;},
  { 0xA402, &quot;ExposureMode&quot;},
  { 0xA403, &quot;WhiteBalance&quot;},
  { 0xA404, &quot;DigitalZoomRatio&quot;},
  { 0xA405, &quot;FocalLengthIn35mmFilm&quot;},
  { 0xA406, &quot;SceneCaptureType&quot;},
  { 0xA407, &quot;GainControl&quot;},
  { 0xA408, &quot;Contrast&quot;},
  { 0xA409, &quot;Saturation&quot;},
  { 0xA40A, &quot;Sharpness&quot;},
  { 0xA40B, &quot;DeviceSettingDescription&quot;},
  { 0xA40C, &quot;SubjectDistanceRange&quot;},
  { 0xA420, &quot;ImageUniqueID&quot;},
  TAG_TABLE_END
} ;

static tag_info_array tag_table_GPS = {
  { 0x0000, &quot;GPSVersion&quot;},
  { 0x0001, &quot;GPSLatitudeRef&quot;},
  { 0x0002, &quot;GPSLatitude&quot;},
  { 0x0003, &quot;GPSLongitudeRef&quot;},
  { 0x0004, &quot;GPSLongitude&quot;},
  { 0x0005, &quot;GPSAltitudeRef&quot;},
  { 0x0006, &quot;GPSAltitude&quot;},
  { 0x0007, &quot;GPSTimeStamp&quot;},
  { 0x0008, &quot;GPSSatellites&quot;},
  { 0x0009, &quot;GPSStatus&quot;},
  { 0x000A, &quot;GPSMeasureMode&quot;},
  { 0x000B, &quot;GPSDOP&quot;},
  { 0x000C, &quot;GPSSpeedRef&quot;},
  { 0x000D, &quot;GPSSpeed&quot;},
  { 0x000E, &quot;GPSTrackRef&quot;},
  { 0x000F, &quot;GPSTrack&quot;},
  { 0x0010, &quot;GPSImgDirectionRef&quot;},
  { 0x0011, &quot;GPSImgDirection&quot;},
  { 0x0012, &quot;GPSMapDatum&quot;},
  { 0x0013, &quot;GPSDestLatitudeRef&quot;},
  { 0x0014, &quot;GPSDestLatitude&quot;},
  { 0x0015, &quot;GPSDestLongitudeRef&quot;},
  { 0x0016, &quot;GPSDestLongitude&quot;},
  { 0x0017, &quot;GPSDestBearingRef&quot;},
  { 0x0018, &quot;GPSDestBearing&quot;},
  { 0x0019, &quot;GPSDestDistanceRef&quot;},
  { 0x001A, &quot;GPSDestDistance&quot;},
  { 0x001B, &quot;GPSProcessingMode&quot;},
  { 0x001C, &quot;GPSAreaInformation&quot;},
  { 0x001D, &quot;GPSDateStamp&quot;},
  { 0x001E, &quot;GPSDifferential&quot;},
  TAG_TABLE_END
};

static tag_info_array tag_table_IOP = {
  { 0x0001, &quot;InterOperabilityIndex&quot;}, /* should be &#039;R98&#039; or &#039;THM&#039; */
  { 0x0002, &quot;InterOperabilityVersion&quot;},
  { 0x1000, &quot;RelatedFileFormat&quot;},
  { 0x1001, &quot;RelatedImageWidth&quot;},
  { 0x1002, &quot;RelatedImageHeight&quot;},
  TAG_TABLE_END
};

static tag_info_array tag_table_VND_CANON = {
  { 0x0001, &quot;ModeArray&quot;}, /* guess */
  { 0x0004, &quot;ImageInfo&quot;}, /* guess */
  { 0x0006, &quot;ImageType&quot;},
  { 0x0007, &quot;FirmwareVersion&quot;},
  { 0x0008, &quot;ImageNumber&quot;},
  { 0x0009, &quot;OwnerName&quot;},
  { 0x000C, &quot;Camera&quot;},
  { 0x000F, &quot;CustomFunctions&quot;},
  TAG_TABLE_END
};

static tag_info_array tag_table_VND_CASIO = {
  { 0x0001, &quot;RecordingMode&quot;},
  { 0x0002, &quot;Quality&quot;},
  { 0x0003, &quot;FocusingMode&quot;},
  { 0x0004, &quot;FlashMode&quot;},
  { 0x0005, &quot;FlashIntensity&quot;},
  { 0x0006, &quot;ObjectDistance&quot;},
  { 0x0007, &quot;WhiteBalance&quot;},
  { 0x000A, &quot;DigitalZoom&quot;},
  { 0x000B, &quot;Sharpness&quot;},
  { 0x000C, &quot;Contrast&quot;},
  { 0x000D, &quot;Saturation&quot;},
  { 0x0014, &quot;CCDSensitivity&quot;},
  TAG_TABLE_END
};

static tag_info_array tag_table_VND_FUJI = {
  { 0x0000, &quot;Version&quot;},
  { 0x1000, &quot;Quality&quot;},
  { 0x1001, &quot;Sharpness&quot;},
  { 0x1002, &quot;WhiteBalance&quot;},
  { 0x1003, &quot;Color&quot;},
  { 0x1004, &quot;Tone&quot;},
  { 0x1010, &quot;FlashMode&quot;},
  { 0x1011, &quot;FlashStrength&quot;},
  { 0x1020, &quot;Macro&quot;},
  { 0x1021, &quot;FocusMode&quot;},
  { 0x1030, &quot;SlowSync&quot;},
  { 0x1031, &quot;PictureMode&quot;},
  { 0x1100, &quot;ContTake&quot;},
  { 0x1300, &quot;BlurWarning&quot;},
  { 0x1301, &quot;FocusWarning&quot;},
  { 0x1302, &quot;AEWarning &quot;},
  TAG_TABLE_END
};

static tag_info_array tag_table_VND_NIKON = {
  { 0x0003, &quot;Quality&quot;},
  { 0x0004, &quot;ColorMode&quot;},
  { 0x0005, &quot;ImageAdjustment&quot;},
  { 0x0006, &quot;CCDSensitivity&quot;},
  { 0x0007, &quot;WhiteBalance&quot;},
  { 0x0008, &quot;Focus&quot;},
  { 0x000a, &quot;DigitalZoom&quot;},
  { 0x000b, &quot;Converter&quot;},
  TAG_TABLE_END
};

static tag_info_array tag_table_VND_NIKON_990 = {
  { 0x0001, &quot;Version&quot;},
  { 0x0002, &quot;ISOSetting&quot;},
  { 0x0003, &quot;ColorMode&quot;},
  { 0x0004, &quot;Quality&quot;},
  { 0x0005, &quot;WhiteBalance&quot;},
  { 0x0006, &quot;ImageSharpening&quot;},
  { 0x0007, &quot;FocusMode&quot;},
  { 0x0008, &quot;FlashSetting&quot;},
  { 0x000F, &quot;ISOSelection&quot;},
  { 0x0080, &quot;ImageAdjustment&quot;},
  { 0x0082, &quot;AuxiliaryLens&quot;},
  { 0x0085, &quot;ManualFocusDistance&quot;},
  { 0x0086, &quot;DigitalZoom&quot;},
  { 0x0088, &quot;AFFocusPosition&quot;},
  { 0x0010, &quot;DataDump&quot;},
  TAG_TABLE_END
};

static tag_info_array tag_table_VND_OLYMPUS = {
  { 0x0200, &quot;SpecialMode&quot;},
  { 0x0201, &quot;JPEGQuality&quot;},
  { 0x0202, &quot;Macro&quot;},
  { 0x0204, &quot;DigitalZoom&quot;},
  { 0x0207, &quot;SoftwareRelease&quot;},
  { 0x0208, &quot;PictureInfo&quot;},
  { 0x0209, &quot;CameraId&quot;},
  { 0x0F00, &quot;DataDump&quot;},
  TAG_TABLE_END
};

static tag_info_array tag_table_VND_SAMSUNG = {
  { 0x0001, &quot;Version&quot;},
  { 0x0021, &quot;PictureWizard&quot;},
  { 0x0030, &quot;LocalLocationName&quot;},
  { 0x0031, &quot;LocationName&quot;},
  { 0x0035, &quot;Preview&quot;},
  { 0x0043, &quot;CameraTemperature&quot;},
  { 0xa001, &quot;FirmwareName&quot;},
  { 0xa003, &quot;LensType&quot;},
  { 0xa004, &quot;LensFirmware&quot;},
  { 0xa010, &quot;SensorAreas&quot;},
  { 0xa011, &quot;ColorSpace&quot;},
  { 0xa012, &quot;SmartRange&quot;},
  { 0xa013, &quot;ExposureBiasValue&quot;},
  { 0xa014, &quot;ISO&quot;},
  { 0xa018, &quot;ExposureTime&quot;},
  { 0xa019, &quot;FNumber&quot;},
  { 0xa01a, &quot;FocalLengthIn35mmFormat&quot;},
  { 0xa020, &quot;EncryptionKey&quot;},
  { 0xa021, &quot;WB_RGGBLevelsUncorrected&quot;},
  { 0xa022, &quot;WB_RGGBLevelsAuto&quot;},
  { 0xa023, &quot;WB_RGGBLevelsIlluminator1&quot;},
  { 0xa024, &quot;WB_RGGBLevelsIlluminator2&quot;},
  { 0xa028, &quot;WB_RGGBLevelsBlack&quot;},
  { 0xa030, &quot;ColorMatrix&quot;},
  { 0xa031, &quot;ColorMatrixSRGB&quot;},
  { 0xa032, &quot;ColorMatrixAdobeRGB&quot;},
  { 0xa040, &quot;ToneCurve1&quot;},
  { 0xa041, &quot;ToneCurve2&quot;},
  { 0xa042, &quot;ToneCurve3&quot;},
  { 0xa043, &quot;ToneCurve4&quot;},
  TAG_TABLE_END
};

static tag_info_array tag_table_VND_PANASONIC = {
  { 0x0001, &quot;Quality&quot;},
  { 0x0002, &quot;FirmwareVersion&quot;},
  { 0x0003, &quot;WhiteBalance&quot;},
  { 0x0007, &quot;FocusMode&quot;},
  { 0x000f, &quot;AFMode&quot;},
  { 0x001a, &quot;ImageStabilization&quot;},
  { 0x001c, &quot;Macro&quot;},
  { 0x001f, &quot;ShootingMode&quot;},
  { 0x0020, &quot;Audio&quot;},
  { 0x0021, &quot;DataDump&quot;},
  { 0x0023, &quot;WhiteBalanceBias&quot;},
  { 0x0024, &quot;FlashBias&quot;},
  { 0x0025, &quot;InternalSerialNumber&quot;},
  { 0x0026, &quot;ExifVersion&quot;},
  { 0x0028, &quot;ColorEffect&quot;},
  { 0x0029, &quot;TimeSincePowerOn&quot;},
  { 0x002a, &quot;BurstMode&quot;},
  { 0x002b, &quot;SequenceNumber&quot;},
  { 0x002c, &quot;Contrast&quot;},
  { 0x002d, &quot;NoiseReduction&quot;},
  { 0x002e, &quot;SelfTimer&quot;},
  { 0x0030, &quot;Rotation&quot;},
  { 0x0031, &quot;AFAssistLamp&quot;},
  { 0x0032, &quot;ColorMode&quot;},
  { 0x0033, &quot;BabyAge1&quot;},
  { 0x0034, &quot;OpticalZoomMode&quot;},
  { 0x0035, &quot;ConversionLens&quot;},
  { 0x0036, &quot;TravelDay&quot;},
  { 0x0039, &quot;Contrast&quot;},
  { 0x003a, &quot;WorldTimeLocation&quot;},
  { 0x003b, &quot;TextStamp1&quot;},
  { 0x003c, &quot;ProgramISO&quot;},
  { 0x003d, &quot;AdvancedSceneType&quot;},
  { 0x003e, &quot;TextStamp2&quot;},
  { 0x003f, &quot;FacesDetected&quot;},
  { 0x0040, &quot;Saturation&quot;},
  { 0x0041, &quot;Sharpness&quot;},
  { 0x0042, &quot;FilmMode&quot;},
  { 0x0044, &quot;ColorTempKelvin&quot;},
  { 0x0045, &quot;BracketSettings&quot;},
  { 0x0046, &quot;WBAdjustAB&quot;},
  { 0x0047, &quot;WBAdjustGM&quot;},
  { 0x0048, &quot;FlashCurtain&quot;},
  { 0x0049, &quot;LongShutterNoiseReduction&quot;},
  { 0x004b, &quot;ImageWidth&quot;},
  { 0x004c, &quot;ImageHeight&quot;},
  { 0x004d, &quot;AFPointPosition&quot;},
  { 0x004e, &quot;FaceDetInfo&quot;},
  { 0x0051, &quot;LensType&quot;},
  { 0x0052, &quot;LensSerialNumber&quot;},
  { 0x0053, &quot;AccessoryType&quot;},
  { 0x0054, &quot;AccessorySerialNumber&quot;},
  { 0x0059, &quot;Transform1&quot;},
  { 0x005d, &quot;IntelligentExposure&quot;},
  { 0x0060, &quot;LensFirmwareVersion&quot;},
  { 0x0061, &quot;FaceRecInfo&quot;},
  { 0x0062, &quot;FlashWarning&quot;},
  { 0x0065, &quot;Title&quot;},
  { 0x0066, &quot;BabyName&quot;},
  { 0x0067, &quot;Location&quot;},
  { 0x0069, &quot;Country&quot;},
  { 0x006b, &quot;State&quot;},
  { 0x006d, &quot;City&quot;},
  { 0x006f, &quot;Landmark&quot;},
  { 0x0070, &quot;IntelligentResolution&quot;},
  { 0x0077, &quot;BurstSheed&quot;},
  { 0x0079, &quot;IntelligentDRange&quot;},
  { 0x007c, &quot;ClearRetouch&quot;},
  { 0x0080, &quot;City2&quot;},
  { 0x0086, &quot;ManometerPressure&quot;},
  { 0x0089, &quot;PhotoStyle&quot;},
  { 0x008a, &quot;ShadingCompensation&quot;},
  { 0x008c, &quot;AccelerometerZ&quot;},
  { 0x008d, &quot;AccelerometerX&quot;},
  { 0x008e, &quot;AccelerometerY&quot;},
  { 0x008f, &quot;CameraOrientation&quot;},
  { 0x0090, &quot;RollAngle&quot;},
  { 0x0091, &quot;PitchAngle&quot;},
  { 0x0093, &quot;SweepPanoramaDirection&quot;},
  { 0x0094, &quot;PanoramaFieldOfView&quot;},
  { 0x0096, &quot;TimerRecording&quot;},
  { 0x009d, &quot;InternalNDFilter&quot;},
  { 0x009e, &quot;HDR&quot;},
  { 0x009f, &quot;ShutterType&quot;},
  { 0x00a3, &quot;ClearRetouchValue&quot;},
  { 0x00ab, &quot;TouchAE&quot;},
  { 0x0e00, &quot;PrintIM&quot;},
  { 0x8000, &quot;MakerNoteVersion&quot;},
  { 0x8001, &quot;SceneMode&quot;},
  { 0x8004, &quot;WBRedLevel&quot;},
  { 0x8005, &quot;WBGreenLevel&quot;},
  { 0x8006, &quot;WBBlueLevel&quot;},
  { 0x8007, &quot;FlashFired&quot;},
  { 0x8008, &quot;TextStamp3&quot;},
  { 0x8009, &quot;TextStamp4&quot;},
  { 0x8010, &quot;BabyAge2&quot;},
  { 0x8012, &quot;Transform2&quot;},
  TAG_TABLE_END
};

static tag_info_array tag_table_VND_DJI = {
  { 0x0001, &quot;Make&quot;},
  { 0x0003, &quot;SpeedX&quot;},
  { 0x0004, &quot;SpeedY&quot;},
  { 0x0005, &quot;SpeedZ&quot;},
  { 0x0006, &quot;Pitch&quot;},
  { 0x0007, &quot;Yaw&quot;},
  { 0x0008, &quot;Roll&quot;},
  { 0x0009, &quot;CameraPitch&quot;},
  { 0x000a, &quot;CameraYaw&quot;},
  { 0x000b, &quot;CameraRoll&quot;},
  TAG_TABLE_END
};

static tag_info_array tag_table_VND_SONY = {
  { 0x0102, &quot;Quality&quot;},
  { 0x0104, &quot;FlashExposureComp&quot;},
  { 0x0105, &quot;Teleconverter&quot;},
  { 0x0112, &quot;WhiteBalanceFineTune&quot;},
  { 0x0114, &quot;CameraSettings&quot;},
  { 0x0115, &quot;WhiteBalance&quot;},
  { 0x0116, &quot;ExtraInfo&quot;},
  { 0x0e00, &quot;PrintIM&quot;},
  { 0x1000, &quot;MultiBurstMode&quot;},
  { 0x1001, &quot;MultiBurstImageWidth&quot;},
  { 0x1002, &quot;MultiBurstImageHeight&quot;},
  { 0x1003, &quot;Panorama&quot;},
  { 0x2001, &quot;PreviewImage&quot;},
  { 0x2002, &quot;Rating&quot;},
  { 0x2004, &quot;Contrast&quot;},
  { 0x2005, &quot;Saturation&quot;},
  { 0x2006, &quot;Sharpness&quot;},
  { 0x2007, &quot;Brightness&quot;},
  { 0x2008, &quot;LongExposureNoiseReduction&quot;},
  { 0x2009, &quot;HighISONoiseReduction&quot;},
  { 0x200a, &quot;AutoHDR&quot;},
  { 0x3000, &quot;ShotInfo&quot;},
  { 0xb000, &quot;FileFormat&quot;},
  { 0xb001, &quot;SonyModelID&quot;},
  { 0xb020, &quot;ColorReproduction&quot;},
  { 0xb021, &quot;ColorTemperature&quot;},
  { 0xb022, &quot;ColorCompensationFilter&quot;},
  { 0xb023, &quot;SceneMode&quot;},
  { 0xb024, &quot;ZoneMatching&quot;},
  { 0xb025, &quot;DynamicRangeOptimizer&quot;},
  { 0xb026, &quot;ImageStabilization&quot;},
  { 0xb027, &quot;LensID&quot;},
  { 0xb028, &quot;MinoltaMakerNote&quot;},
  { 0xb029, &quot;ColorMode&quot;},
  { 0xb02b, &quot;FullImageSize&quot;},
  { 0xb02c, &quot;PreviewImageSize&quot;},
  { 0xb040, &quot;Macro&quot;},
  { 0xb041, &quot;ExposureMode&quot;},
  { 0xb042, &quot;FocusMode&quot;},
  { 0xb043, &quot;AFMode&quot;},
  { 0xb044, &quot;AFIlluminator&quot;},
  { 0xb047, &quot;JPEGQuality&quot;},
  { 0xb048, &quot;FlashLevel&quot;},
  { 0xb049, &quot;ReleaseMode&quot;},
  { 0xb04a, &quot;SequenceNumber&quot;},
  { 0xb04b, &quot;AntiBlur&quot;},
  { 0xb04e, &quot;FocusMode&quot;},
  { 0xb04f, &quot;DynamicRangeOptimizer&quot;},
  { 0xb050, &quot;HighISONoiseReduction2&quot;},
  { 0xb052, &quot;IntelligentAuto&quot;},
  { 0xb054, &quot;WhiteBalance2&quot;},
  TAG_TABLE_END
};

static tag_info_array tag_table_VND_PENTAX = {
  { 0x0000, &quot;Version&quot;},
  { 0x0001, &quot;Mode&quot;},
  { 0x0002, &quot;PreviewResolution&quot;},
  { 0x0003, &quot;PreviewLength&quot;},
  { 0x0004, &quot;PreviewOffset&quot;},
  { 0x0005, &quot;ModelID&quot;},
  { 0x0006, &quot;Date&quot;},
  { 0x0007, &quot;Time&quot;},
  { 0x0008, &quot;Quality&quot;},
  { 0x0009, &quot;Size&quot;},
  { 0x000c, &quot;Flash&quot;},
  { 0x000d, &quot;Focus&quot;},
  { 0x000e, &quot;AFPoint&quot;},
  { 0x000f, &quot;AFPointInFocus&quot;},
  { 0x0012, &quot;ExposureTime&quot;},
  { 0x0013, &quot;FNumber&quot;},
  { 0x0014, &quot;ISO&quot;},
  { 0x0016, &quot;ExposureCompensation&quot;},
  { 0x0017, &quot;MeteringMode&quot;},
  { 0x0018, &quot;AutoBracketing&quot;},
  { 0x0019, &quot;WhiteBalance&quot;},
  { 0x001a, &quot;WhiteBalanceMode&quot;},
  { 0x001b, &quot;BlueBalance&quot;},
  { 0x001c, &quot;RedBalance&quot;},
  { 0x001d, &quot;FocalLength&quot;},
  { 0x001e, &quot;DigitalZoom&quot;},
  { 0x001f, &quot;Saturation&quot;},
  { 0x0020, &quot;Contrast&quot;},
  { 0x0021, &quot;Sharpness&quot;},
  { 0x0022, &quot;Location&quot;},
  { 0x0023, &quot;Hometown&quot;},
  { 0x0024, &quot;Destination&quot;},
  { 0x0025, &quot;HometownDST&quot;},
  { 0x0026, &quot;DestinationDST&quot;},
  { 0x0027, &quot;DSPFirmwareVersion&quot;},
  { 0x0028, &quot;CPUFirmwareVersion&quot;},
  { 0x0029, &quot;FrameNumber&quot;},
  { 0x002d, &quot;EffectiveLV&quot;},
  { 0x0032, &quot;ImageProcessing&quot;},
  { 0x0033, &quot;PictureMode&quot;},
  { 0x0034, &quot;DriveMode&quot;},
  { 0x0037, &quot;ColorSpace&quot;},
  { 0x0038, &quot;ImageAreaOffset&quot;},
  { 0x0039, &quot;RawImageSize&quot;},
  { 0x003e, &quot;PreviewImageBorders&quot;},
  { 0x003f, &quot;LensType&quot;},
  { 0x0040, &quot;SensitivityAdjust&quot;},
  { 0x0041, &quot;DigitalFilter&quot;},
  { 0x0047, &quot;Temperature&quot;},
  { 0x0048, &quot;AELock&quot;},
  { 0x0049, &quot;NoiseReduction&quot;},
  { 0x004d, &quot;FlashExposureCompensation&quot;},
  { 0x004f, &quot;ImageTone&quot;},
  { 0x0050, &quot;ColorTemperature&quot;},
  { 0x005c, &quot;ShakeReduction&quot;},
  { 0x005d, &quot;ShutterCount&quot;},
  { 0x0069, &quot;DynamicRangeExpansion&quot;},
  { 0x0071, &quot;HighISONoiseReduction&quot;},
  { 0x0072, &quot;AFAdjustment&quot;},
  { 0x0200, &quot;BlackPoint&quot;},
  { 0x0201, &quot;WhitePoint&quot;},
  { 0x0205, &quot;ShotInfo&quot;},
  { 0x0206, &quot;AEInfo&quot;},
  { 0x0207, &quot;LensInfo&quot;},
  { 0x0208, &quot;FlashInfo&quot;},
  { 0x0209, &quot;AEMeteringSegments&quot;},
  { 0x020a, &quot;FlashADump&quot;},
  { 0x020b, &quot;FlashBDump&quot;},
  { 0x020d, &quot;WB_RGGBLevelsDaylight&quot;},
  { 0x020e, &quot;WB_RGGBLevelsShade&quot;},
  { 0x020f, &quot;WB_RGGBLevelsCloudy&quot;},
  { 0x0210, &quot;WB_RGGBLevelsTungsten&quot;},
  { 0x0211, &quot;WB_RGGBLevelsFluorescentD&quot;},
  { 0x0212, &quot;WB_RGGBLevelsFluorescentN&quot;},
  { 0x0213, &quot;WB_RGGBLevelsFluorescentW&quot;},
  { 0x0214, &quot;WB_RGGBLevelsFlash&quot;},
  { 0x0215, &quot;CameraInfo&quot;},
  { 0x0216, &quot;BatteryInfo&quot;},
  { 0x021f, &quot;AFInfo&quot;},
  { 0x0222, &quot;ColorInfo&quot;},
  { 0x0229, &quot;SerialNumber&quot;},
  TAG_TABLE_END
};

static tag_info_array tag_table_VND_MINOLTA = {
  { 0x0000, &quot;Version&quot;},
  { 0x0001, &quot;CameraSettingsStdOld&quot;},
  { 0x0003, &quot;CameraSettingsStdNew&quot;},
  { 0x0004, &quot;CameraSettings7D&quot;},
  { 0x0018, &quot;ImageStabilizationData&quot;},
  { 0x0020, &quot;WBInfoA100&quot;},
  { 0x0040, &quot;CompressedImageSize&quot;},
  { 0x0081, &quot;Thumbnail&quot;},
  { 0x0088, &quot;ThumbnailOffset&quot;},
  { 0x0089, &quot;ThumbnailLength&quot;},
  { 0x0100, &quot;SceneMode&quot;},
  { 0x0101, &quot;ColorMode&quot;},
  { 0x0102, &quot;Quality&quot;},
  { 0x0104, &quot;FlashExposureComp&quot;},
  { 0x0105, &quot;Teleconverter&quot;},
  { 0x0107, &quot;ImageStabilization&quot;},
  { 0x0109, &quot;RawAndJpgRecording&quot;},
  { 0x010a, &quot;ZoneMatching&quot;},
  { 0x010b, &quot;ColorTemperature&quot;},
  { 0x010c, &quot;LensID&quot;},
  { 0x0111, &quot;ColorCompensationFilter&quot;},
  { 0x0112, &quot;WhiteBalanceFineTune&quot;},
  { 0x0113, &quot;ImageStabilizationA100&quot;},
  { 0x0114, &quot;CameraSettings5D&quot;},
  { 0x0115, &quot;WhiteBalance&quot;},
  { 0x0e00, &quot;PrintIM&quot;},
  { 0x0f00, &quot;CameraSettingsZ1&quot;},
  TAG_TABLE_END
};

static tag_info_array tag_table_VND_SIGMA = {
  { 0x0002, &quot;SerialNumber&quot;},
  { 0x0003, &quot;DriveMode&quot;},
  { 0x0004, &quot;ResolutionMode&quot;},
  { 0x0005, &quot;AutofocusMode&quot;},
  { 0x0006, &quot;FocusSetting&quot;},
  { 0x0007, &quot;WhiteBalance&quot;},
  { 0x0008, &quot;ExposureMode&quot;},
  { 0x0009, &quot;MeteringMode&quot;},
  { 0x000a, &quot;LensRange&quot;},
  { 0x000b, &quot;ColorSpace&quot;},
  { 0x000c, &quot;Exposure&quot;},
  { 0x000d, &quot;Contrast&quot;},
  { 0x000e, &quot;Shadow&quot;},
  { 0x000f, &quot;Highlight&quot;},
  { 0x0010, &quot;Saturation&quot;},
  { 0x0011, &quot;Sharpness&quot;},
  { 0x0012, &quot;FillLight&quot;},
  { 0x0014, &quot;ColorAdjustment&quot;},
  { 0x0015, &quot;AdjustmentMode&quot;},
  { 0x0016, &quot;Quality&quot;},
  { 0x0017, &quot;Firmware&quot;},
  { 0x0018, &quot;Software&quot;},
  { 0x0019, &quot;AutoBracket&quot;},
  TAG_TABLE_END
};

static tag_info_array tag_table_VND_KYOCERA = {
  { 0x0001, &quot;FormatThumbnail&quot;},
  { 0x0E00, &quot;PrintImageMatchingInfo&quot;},
  TAG_TABLE_END
};

static tag_info_array tag_table_VND_RICOH = {
  { 0x0001, &quot;MakerNoteDataType&quot;},
  { 0x0002, &quot;Version&quot;},
  { 0x0E00, &quot;PrintImageMatchingInfo&quot;},
  { 0x2001, &quot;RicohCameraInfoMakerNoteSubIFD&quot;},
  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;

/* Some maker notes (e.g. DJI info tag) require custom parsing */
#define REQUIRES_CUSTOM_PARSING NULL

/* Remember to update PHP_MINFO if updated */
static const maker_note_type maker_note_array[] = {
  { tag_table_VND_CANON,     &quot;Canon&quot;,                   NULL,								0,  0,  MN_ORDER_INTEL,    MN_OFFSET_NORMAL},
  { tag_table_VND_CASIO,     &quot;CASIO&quot;,                   NULL,							 	0,  0,  MN_ORDER_MOTOROLA, MN_OFFSET_NORMAL},
  { tag_table_VND_FUJI,      &quot;FUJIFILM&quot;,                &quot;FUJIFILM\x0C\x00\x00\x00&quot;,		 	12, 12, MN_ORDER_INTEL,    MN_OFFSET_MAKER},
  { tag_table_VND_NIKON,     &quot;NIKON&quot;,                   &quot;Nikon\x00\x01\x00&quot;,				8,  8,  MN_ORDER_NORMAL,   MN_OFFSET_NORMAL},
  { tag_table_VND_NIKON_990, &quot;NIKON&quot;,                   NULL,								0,  0,  MN_ORDER_NORMAL,   MN_OFFSET_NORMAL},
  { tag_table_VND_OLYMPUS,   &quot;OLYMPUS OPTICAL CO.,LTD&quot;, &quot;OLYMP\x00\x01\x00&quot;,				8,  8,  MN_ORDER_NORMAL,   MN_OFFSET_NORMAL},
  { tag_table_VND_SAMSUNG,   &quot;SAMSUNG&quot;,                 NULL,								0,  0,  MN_ORDER_NORMAL,   MN_OFFSET_NORMAL},
  { tag_table_VND_PANASONIC, &quot;Panasonic&quot;,               &quot;Panasonic\x00\x00\x00&quot;,			12, 12, MN_ORDER_NORMAL,   MN_OFFSET_NORMAL},
  { REQUIRES_CUSTOM_PARSING, &quot;DJI&quot;,                     &quot;[ae_dbg_info:&quot;,					13, 13, MN_ORDER_MOTOROLA, MN_OFFSET_NORMAL},
  { tag_table_VND_DJI,       &quot;DJI&quot;,                     NULL,								0,  0,  MN_ORDER_NORMAL,   MN_OFFSET_NORMAL},
  { tag_table_VND_SONY,      &quot;SONY&quot;,                    &quot;SONY DSC \x00\x00\x00&quot;,			12, 12, MN_ORDER_NORMAL,   MN_OFFSET_NORMAL},
  { tag_table_VND_SONY,      &quot;SONY&quot;,                    NULL,								0,  0,  MN_ORDER_NORMAL,   MN_OFFSET_NORMAL},
  { tag_table_VND_PENTAX,    &quot;PENTAX&quot;,                  &quot;AOC\x00&quot;,						 	6,  6,  MN_ORDER_NORMAL,   MN_OFFSET_NORMAL},
  { tag_table_VND_MINOLTA,   &quot;Minolta, KONICA MINOLTA&quot;, NULL,								0,  0,  MN_ORDER_NORMAL,   MN_OFFSET_NORMAL},
  { tag_table_VND_SIGMA,     &quot;SIGMA, FOVEON&quot;,           &quot;SIGMA\x00\x00\x00&quot;,				10, 10, MN_ORDER_NORMAL,   MN_OFFSET_NORMAL},
  { tag_table_VND_SIGMA,     &quot;SIGMA, FOVEON&quot;,           &quot;FOVEON\x00\x00\x00&quot;,				10, 10, MN_ORDER_NORMAL,   MN_OFFSET_NORMAL},
  { tag_table_VND_KYOCERA,   &quot;KYOCERA, CONTAX&quot;,			&quot;KYOCERA            \x00\x00\x00&quot;,	22, 22, MN_ORDER_NORMAL,   MN_OFFSET_MAKER},
  { tag_table_VND_RICOH,	 &quot;RICOH&quot;,					&quot;Ricoh&quot;,							5,  5,  MN_ORDER_MOTOROLA, MN_OFFSET_NORMAL},
  { tag_table_VND_RICOH,     &quot;RICOH&quot;,					&quot;RICOH&quot;,							5,  5,  MN_ORDER_MOTOROLA, MN_OFFSET_NORMAL},

  /* These re-uses existing formats */
  { tag_table_VND_OLYMPUS,   &quot;AGFA&quot;,					&quot;AGFA \x00\x01&quot;,					8,  8,  MN_ORDER_NORMAL,   MN_OFFSET_NORMAL},
  { tag_table_VND_OLYMPUS,   &quot;EPSON&quot;,					&quot;EPSON\x00\x01\x00&quot;,				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-&gt;Tag != TAG_END_OF_LIST) {
		if (!zend_hash_index_add_ptr(ht, tag_table-&gt;Tag, tag_table-&gt;Desc)) {
			zend_error(E_CORE_ERROR, &quot;Duplicate tag %x&quot;, tag_table-&gt;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 &quot;UndefinedTag&quot;;
}

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, &quot;UndefinedTag:0x%04X&quot;, 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, &quot;\nDump Len: %08X (%d)&quot;, len, len);
	if (len) {
		for(i=0; i&lt;len+15 &amp;&amp; p+n&lt;=sizeof(buf); i++) {
			if (i%16==0) {
				p += slprintf(buf+p, sizeof(buf)-p, &quot;\n%08X: &quot;, i+offset);
			}
			if (i&lt;len) {
				c = *((unsigned char *)addr++);
				p += slprintf(buf+p, sizeof(buf)-p, &quot;%02X &quot;, c);
				tmp[i%16] = c&gt;=32 ? c : &#039;.&#039;;
				tmp[(i%16)+1] = &#039;\0&#039;;
			} else {
				p += slprintf(buf+p, sizeof(buf)-p, &quot;   &quot;);
			}
			if (i%16==15) {
				p += slprintf(buf+p, sizeof(buf)-p, &quot;    %s&quot;, tmp);
				if (i&gt;=len) {
					break;
				}
			}
		}
	}
	buf[sizeof(buf)-1] = &#039;\0&#039;;
	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] &lt;&lt; 8) | ((uchar *)value)[1];
}
/* }}} */

/* {{{ php_ifd_get16u
 * Convert a 16 bit unsigned value from file&#039;s native byte order */
static int php_ifd_get16u(void *value, int motorola_intel)
{
	if (motorola_intel) {
		return (((uchar *)value)[0] &lt;&lt; 8) | ((uchar *)value)[1];
	} else {
		return (((uchar *)value)[1] &lt;&lt; 8) | ((uchar *)value)[0];
	}
}
/* }}} */

/* {{{ php_ifd_get16s
 * Convert a 16 bit signed value from file&#039;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&#039;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] &lt;&lt; 24)
			  | ((unsigned)value[1] &lt;&lt; 16)
			  | ((unsigned)value[2] &lt;&lt; 8 )
			  | ((unsigned)value[3]      );
	} else {
		return  ((unsigned)value[3] &lt;&lt; 24)
			  | ((unsigned)value[2] &lt;&lt; 16)
			  | ((unsigned)value[1] &lt;&lt; 8 )
			  | ((unsigned)value[0]      );
	}
}
/* }}} */

/* {{{ php_ifd_get64u
 * Convert a 64 bit unsigned value from file&#039;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] &lt;&lt; 56)
			| ((uint64_t)value[1] &lt;&lt; 48)
			| ((uint64_t)value[2] &lt;&lt; 40)
			| ((uint64_t)value[3] &lt;&lt; 32)
			| ((uint64_t)value[4] &lt;&lt; 24)
			| ((uint64_t)value[5] &lt;&lt; 16)
			| ((uint64_t)value[6] &lt;&lt; 8 )
			| ((uint64_t)value[7]      );
	} else {
		return ((uint64_t)value[7] &lt;&lt; 56)
			| ((uint64_t)value[6] &lt;&lt; 48)
			| ((uint64_t)value[5] &lt;&lt; 40)
			| ((uint64_t)value[4] &lt;&lt; 32)
			| ((uint64_t)value[3] &lt;&lt; 24)
			| ((uint64_t)value[2] &lt;&lt; 16)
			| ((uint64_t)value[1] &lt;&lt; 8 )
			| ((uint64_t)value[0]      );
	}
}
/* }}} */

/* {{{ php_ifd_get32u
 * Convert a 32 bit signed value from file&#039;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 &amp; 0xFF00) &gt;&gt; 8;
		data[1] = (value &amp; 0x00FF);
	} else {
		data[1] = (value &amp; 0xFF00) &gt;&gt; 8;
		data[0] = (value &amp; 0x00FF);
	}
}
/* }}} */

/* {{{ php_ifd_set32u
 * Convert a 32 bit unsigned value from file&#039;s native byte order */
static void php_ifd_set32u(char *data, size_t value, int motorola_intel)
{
	if (motorola_intel) {
		data[0] = (value &amp; 0xFF000000) &gt;&gt; 24;
		data[1] = (char) ((value &amp; 0x00FF0000) &gt;&gt; 16);
		data[2] = (value &amp; 0x0000FF00) &gt;&gt;  8;
		data[3] = (value &amp; 0x000000FF);
	} else {
		data[3] = (value &amp; 0xFF000000) &gt;&gt; 24;
		data[2] = (char) ((value &amp; 0x00FF0000) &gt;&gt; 16);
		data[1] = (value &amp; 0x0000FF00) &gt;&gt;  8;
		data[0] = (value &amp; 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 : &quot;&lt;no data&gt;&quot;;
	}
	if (format == TAG_FMT_UNDEFINED) {
		return &quot;&lt;undefined&gt;&quot;;
	}
	if (format == TAG_FMT_IFD) {
		return &quot;&quot;;
	}
	if (format == TAG_FMT_SINGLE || format == TAG_FMT_DOUBLE) {
		return &quot;&lt;not implemented&gt;&quot;;
	}
	*dump_free = 1;
	if (components &gt; 1) {
		len = spprintf(&amp;dump, 0, &quot;(%d) {&quot;, components);
	} else {
		len = spprintf(&amp;dump, 0, &quot;{&quot;);
	}
	while(components &gt; 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, &quot;0x%02X&quot;, *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, &quot;0x%04X&quot;, 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, &quot;0x%04X&quot;, 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, &quot;0x%04X/0x%04X&quot;, php_ifd_get32s(value_ptr, motorola_intel), php_ifd_get32s(value_ptr+4, motorola_intel));
				len += 13;
				value_ptr += 8;
				break;
		}
		if (components &gt; 0) {
			dump = erealloc(dump, len + 2 + 1);
			snprintf(dump + len, 2 + 1, &quot;, &quot;);
			len += 2;
			components--;
		} else{
			break;
		}
	}
	dump = erealloc(dump, len + 1 + 1);
	snprintf(dump + len, 1 + 1, &quot;}&quot;);
	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, &quot;Found value of type single&quot;);
#endif
			return (double) php_ifd_get_float(value);
		case TAG_FMT_DOUBLE:
#ifdef EXIF_DEBUG
			php_error_docref(NULL, E_NOTICE, &quot;Found value of type double&quot;);
#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 &lt; 0.0f || zend_isnan(x)) {
		return 0;
	} else if (x &gt; (float) SIZE_MAX) {
		return SIZE_MAX;
	} else {
		return (size_t) x;
	}
}

static size_t double_to_size_t(double x) {
	if (x &lt; 0.0 || zend_isnan(x)) {
		return 0;
	} else if (x &gt; (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 &amp;&amp; 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, &quot;Found value of type single&quot;);
#endif
			return float_to_size_t(php_ifd_get_float(value));
		case TAG_FMT_DOUBLE:
#ifdef EXIF_DEBUG
			php_error_docref(NULL, E_NOTICE, &quot;Found value of type double&quot;);
#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&lt;&lt;SECTION_FILE)
#define FOUND_COMPUTED      (1&lt;&lt;SECTION_COMPUTED)
#define FOUND_ANY_TAG       (1&lt;&lt;SECTION_ANY_TAG)
#define FOUND_IFD0          (1&lt;&lt;SECTION_IFD0)
#define FOUND_THUMBNAIL     (1&lt;&lt;SECTION_THUMBNAIL)
#define FOUND_COMMENT       (1&lt;&lt;SECTION_COMMENT)
#define FOUND_APP0          (1&lt;&lt;SECTION_APP0)
#define FOUND_EXIF          (1&lt;&lt;SECTION_EXIF)
#define FOUND_FPIX          (1&lt;&lt;SECTION_FPIX)
#define FOUND_GPS           (1&lt;&lt;SECTION_GPS)
#define FOUND_INTEROP       (1&lt;&lt;SECTION_INTEROP)
#define FOUND_APP12         (1&lt;&lt;SECTION_APP12)
#define FOUND_WINXP         (1&lt;&lt;SECTION_WINXP)
#define FOUND_MAKERNOTE     (1&lt;&lt;SECTION_MAKERNOTE)

static char *exif_get_sectionname(int section)
{
	switch(section) {
		case SECTION_FILE:      return &quot;FILE&quot;;
		case SECTION_COMPUTED:  return &quot;COMPUTED&quot;;
		case SECTION_ANY_TAG:   return &quot;ANY_TAG&quot;;
		case SECTION_IFD0:      return &quot;IFD0&quot;;
		case SECTION_THUMBNAIL: return &quot;THUMBNAIL&quot;;
		case SECTION_COMMENT:   return &quot;COMMENT&quot;;
		case SECTION_APP0:      return &quot;APP0&quot;;
		case SECTION_EXIF:      return &quot;EXIF&quot;;
		case SECTION_FPIX:      return &quot;FPIX&quot;;
		case SECTION_GPS:       return &quot;GPS&quot;;
		case SECTION_INTEROP:   return &quot;INTEROP&quot;;
		case SECTION_APP12:     return &quot;APP12&quot;;
		case SECTION_WINXP:     return &quot;WINXP&quot;;
		case SECTION_MAKERNOTE: return &quot;MAKERNOTE&quot;;
	}
	return &quot;&quot;;
}

static tag_table_type exif_get_tag_table(int section)
{
	switch(section) {
		case SECTION_FILE:      return &amp;tag_table_IFD[0];
		case SECTION_COMPUTED:  return &amp;tag_table_IFD[0];
		case SECTION_ANY_TAG:   return &amp;tag_table_IFD[0];
		case SECTION_IFD0:      return &amp;tag_table_IFD[0];
		case SECTION_THUMBNAIL: return &amp;tag_table_IFD[0];
		case SECTION_COMMENT:   return &amp;tag_table_IFD[0];
		case SECTION_APP0:      return &amp;tag_table_IFD[0];
		case SECTION_EXIF:      return &amp;tag_table_IFD[0];
		case SECTION_FPIX:      return &amp;tag_table_IFD[0];
		case SECTION_GPS:       return &amp;tag_table_GPS[0];
		case SECTION_INTEROP:   return &amp;tag_table_IOP[0];
		case SECTION_APP12:     return &amp;tag_table_IFD[0];
		case SECTION_WINXP:     return &amp;tag_table_IFD[0];
	}
	return &amp;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&lt;SECTION_COUNT; i++) {
		ml += strlen(exif_get_sectionname(i))+2;
	}
	sections = safe_emalloc(ml, 1, 1);
	sections[0] = &#039;\0&#039;;
	len = 0;
	for(i=0; i&lt;SECTION_COUNT; i++) {
		if (sectionlist&amp;(1&lt;&lt;i)) {
			snprintf(sections+len, ml-len, &quot;%s, &quot;, exif_get_sectionname(i));
			len = strlen(sections);
		}
	}
	if (len&gt;2)
		sections[len-2] = &#039;\0&#039;;
	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 &quot;&lt;Photographer&gt; [ &#039;\0&#039; &lt;Editor&gt; ] [&#039;\0&#039;]&quot; */
	char            *CopyrightPhotographer;
	char            *CopyrightEditor;

	xp_field_list   xp_fields;

	thumbnail_data  Thumbnail;
	/* other */
	int             sections_found; /* FOUND_&lt;marker&gt; */
	image_info_list info_list[SECTION_COUNT];
	/* for parsing */
	int             read_thumbnail;
	int             read_all;
	int             ifd_nesting_level;
	int             ifd_count;
	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-&gt;num_errors &gt; EXIF_MAX_ERRORS) {
			if (ImageInfo-&gt;num_errors == EXIF_MAX_ERRORS+1) {
				php_error_docref(docref, type,
					&quot;Further exif parsing errors have been suppressed&quot;);
			}
			return;
		}
	}

	va_start(args, format);
#ifdef EXIF_DEBUG
	{
		char *buf;

		spprintf(&amp;buf, 0, &quot;%s(%ld): %s&quot;, _file, _line, format);
		php_verror(docref, ImageInfo &amp;&amp; ImageInfo-&gt;FileName ? ImageInfo-&gt;FileName:&quot;&quot;, type, buf, args);
		efree(buf);
	}
#else
	php_verror(docref, ImageInfo &amp;&amp; ImageInfo-&gt;FileName ? ImageInfo-&gt;FileName:&quot;&quot;, 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 bool ptr_offset_overflows(char *ptr, size_t offset) {
	return UINTPTR_MAX - (uintptr_t) ptr &lt; 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-&gt;offset_base = offset_base;
	info-&gt;valid_start = valid_start;
	info-&gt;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-&gt;offset_base, offset)) {
		return NULL;
	}

	start = info-&gt;offset_base + offset;
	if (ptr_offset_overflows(start, length)) {
		return NULL;
	}

	end = start + length;
	if (start &lt; info-&gt;valid_start || end &gt; info-&gt;valid_end) {
		return NULL;
	}

	return start;
}

static inline 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 &gt;= and &lt;= to do the checks, respectively. */
	end = start + length;
	return start &gt;= info-&gt;valid_start &amp;&amp; end &lt;= info-&gt;valid_end;
}

#ifdef EXIF_DEBUG
static inline int exif_offset_info_length(const exif_offset_info *info)
{
	return info-&gt;valid_end - info-&gt;valid_start;
}
#endif

/* {{{ exif_file_sections_add
 Add a file_section to image_info
 returns the used block or -1. if size&gt;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-&gt;file.count;
	if (count == ImageInfo-&gt;file.alloc_count) {
		int new_alloc_count = ImageInfo-&gt;file.alloc_count ? ImageInfo-&gt;file.alloc_count * 2 : 1;
		ImageInfo-&gt;file.list = safe_erealloc(
			ImageInfo-&gt;file.list, new_alloc_count, sizeof(file_section), 0);
		ImageInfo-&gt;file.alloc_count = new_alloc_count;
	}

	ImageInfo-&gt;file.list[count].type = 0xFFFF;
	ImageInfo-&gt;file.list[count].data = NULL;
	ImageInfo-&gt;file.list[count].size = 0;
	ImageInfo-&gt;file.count = count+1;
	if (!size) {
		data = NULL;
	} else if (data == NULL) {
		data = safe_emalloc(size, 1, 0);
	}
	ImageInfo-&gt;file.list[count].type = type;
	ImageInfo-&gt;file.list[count].data = data;
	ImageInfo-&gt;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 &gt;= ImageInfo-&gt;file.count) {
		EXIF_ERRLOG_FSREALLOC(ImageInfo)
		return -1;
	}
	tmp = safe_erealloc(ImageInfo-&gt;file.list[section_index].data, 1, size, 0);
	ImageInfo-&gt;file.list[section_index].data = tmp;
	ImageInfo-&gt;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-&gt;file.count) {
		for (i=0; i&lt;ImageInfo-&gt;file.count; i++) {
			EFREE_IF(ImageInfo-&gt;file.list[i].data);
		}
	}
	EFREE_IF(ImageInfo-&gt;file.list);
	ImageInfo-&gt;file.count = 0;
	return true;
}
/* }}} */

static image_info_data *exif_alloc_image_info_data(image_info_list *info_list) {
	if (info_list-&gt;count == info_list-&gt;alloc_count) {
		int new_alloc_count = info_list-&gt;alloc_count ? info_list-&gt;alloc_count * 2 : 1;
		info_list-&gt;list = safe_erealloc(
			info_list-&gt;list, new_alloc_count, sizeof(image_info_data), 0);
		info_list-&gt;alloc_count = new_alloc_count;
	}
	return &amp;info_list-&gt;list[info_list-&gt;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, size_t 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;

	info_data = exif_alloc_image_info_data(&amp;image_info-&gt;info_list[section_index]);
	memset(info_data, 0, sizeof(image_info_data));
	info_data-&gt;tag    = tag;
	info_data-&gt;format = format;
	info_data-&gt;length = length;
	info_data-&gt;name   = estrdup(name);
	info_value        = &amp;info_data-&gt;value;

	switch (format) {
		case TAG_FMT_STRING:
			if (length &gt; value_len) {
				exif_error_docref(&quot;exif_iif_add_value&quot; EXIFERR_CC, image_info, E_WARNING, &quot;length &gt; value_len: %d &gt; %zu&quot;, length, value_len);
				value = NULL;
			}
			if (value) {
				length = zend_strnlen(value, length);
				info_value-&gt;s = estrndup(value, length);
				info_data-&gt;length = length;
			} else {
				info_data-&gt;length = 0;
				info_value-&gt;s = estrdup(&quot;&quot;);
			}
			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-&gt;tag = TAG_FMT_UNDEFINED;/* otherwise not freed from memory */
			ZEND_FALLTHROUGH;
		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;
			}
			ZEND_FALLTHROUGH;
		case TAG_FMT_UNDEFINED:
			if (length &gt; value_len) {
				exif_error_docref(&quot;exif_iif_add_value&quot; EXIFERR_CC, image_info, E_WARNING, &quot;length &gt; value_len: %d &gt; %zu&quot;, length, value_len);
				value = NULL;
			}
			if (value) {
				if (tag == TAG_MAKER_NOTE) {
					length = zend_strnlen(value, length);
				}

				/* do not recompute length here */
				info_value-&gt;s = estrndup(value, length);
				info_data-&gt;length = length;
			} else {
				info_data-&gt;length = 0;
				info_value-&gt;s = estrdup(&quot;&quot;);
			}
			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;
			}
			if (length&gt;1) {
				info_value-&gt;list = safe_emalloc(length, sizeof(image_info_value), 0);
			} else {
				info_value = &amp;info_data-&gt;value;
			}
			vptr_end = (char *) value + value_len;
			for (idex=0,vptr=value; idex&lt;length; idex++,vptr=(char *) vptr + php_tiff_bytes_per_format[format]) {
				if ((char *) vptr_end - (char *) vptr &lt; php_tiff_bytes_per_format[format]) {
					exif_error_docref(&quot;exif_iif_add_value&quot; EXIFERR_CC, image_info, E_WARNING, &quot;Value too short&quot;);
					break;
				}
				if (length&gt;1) {
					info_value = &amp;info_data-&gt;value.list[idex];
				}
				switch (format) {
					case TAG_FMT_USHORT:
						info_value-&gt;u = php_ifd_get16u(vptr, motorola_intel);
						break;

					case TAG_FMT_ULONG:
						info_value-&gt;u = php_ifd_get32u(vptr, motorola_intel);
						break;

					case TAG_FMT_URATIONAL:
						info_value-&gt;ur.num = php_ifd_get32u(vptr, motorola_intel);
						info_value-&gt;ur.den = php_ifd_get32u(4+(char *)vptr, motorola_intel);
						break;

					case TAG_FMT_SSHORT:
						info_value-&gt;i = php_ifd_get16s(vptr, motorola_intel);
						break;

					case TAG_FMT_SLONG:
						info_value-&gt;i = php_ifd_get32s(vptr, motorola_intel);
						break;

					case TAG_FMT_SRATIONAL:
						info_value-&gt;sr.num = php_ifd_get32u(vptr, motorola_intel);
						info_value-&gt;sr.den = php_ifd_get32u(4+(char *)vptr, motorola_intel);
						break;

					case TAG_FMT_SINGLE:
#ifdef EXIF_DEBUG
						php_error_docref(NULL, E_WARNING, &quot;Found value of type single&quot;);
#endif
						info_value-&gt;f = php_ifd_get_float(value);
						break;
					case TAG_FMT_DOUBLE:
#ifdef EXIF_DEBUG
						php_error_docref(NULL, E_WARNING, &quot;Found value of type double&quot;);
#endif
						info_value-&gt;d = php_ifd_get_double(value);
						break;
				}
			}
	}
	image_info-&gt;sections_found |= 1&lt;&lt;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, length, value, value_len, image_info-&gt;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(&amp;image_info-&gt;info_list[section_index]);
	info_data-&gt;tag    = TAG_NONE;
	info_data-&gt;format = TAG_FMT_SLONG;
	info_data-&gt;length = 1;
	info_data-&gt;name   = estrdup(name);
	info_data-&gt;value.i = value;
	image_info-&gt;sections_found |= 1&lt;&lt;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(&amp;image_info-&gt;info_list[section_index]);
		info_data-&gt;tag    = TAG_NONE;
		info_data-&gt;format = TAG_FMT_STRING;
		info_data-&gt;length = 1;
		info_data-&gt;name   = estrdup(name);
		info_data-&gt;value.s = estrdup(value);
		image_info-&gt;sections_found |= 1&lt;&lt;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(&amp;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(&amp;image_info-&gt;info_list[section_index]);
		info_data-&gt;tag    = TAG_NONE;
		info_data-&gt;format = TAG_FMT_UNDEFINED;
		info_data-&gt;length = length;
		info_data-&gt;name   = estrdup(name);
		info_data-&gt;value.s = safe_emalloc(length, 1, 1);
		memcpy(info_data-&gt;value.s, value, length);
		info_data-&gt;value.s[length] = 0;
		image_info-&gt;sections_found |= 1&lt;&lt;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-&gt;info_list[section_index].count) {
		for (i=0; i &lt; image_info-&gt;info_list[section_index].count; i++) {
			if ((f=image_info-&gt;info_list[section_index].list[i].name) != NULL) {
				efree(f);
			}
			switch(image_info-&gt;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-&gt;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-&gt;info_list[section_index].list[i].length &gt; 1) {
						if ((f=image_info-&gt;info_list[section_index].list[i].value.list) != NULL) {
							efree(f);
						}
					}
					break;
			}
		}
	}
	EFREE_IF(image_info-&gt;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-&gt;info_list[section_index].count) {
		return;
	}

	zval tmpi;
	if (sub_array) {
		array_init(&amp;tmpi);
	} else {
		ZVAL_COPY_VALUE(&amp;tmpi, value);
	}

	for (int i = 0; i&lt;image_info-&gt;info_list[section_index].count; i++) {
		image_info_data *info_data = &amp;image_info-&gt;info_list[section_index].list[i];
		image_info_value *info_value = &amp;info_data-&gt;value;
		const char *name = info_data-&gt;name;
		if (!name) {
			snprintf(uname, sizeof(uname), &quot;%d&quot;, unknown++);
			name = uname;
		}

		if (info_data-&gt;length == 0) {
			add_assoc_null(&amp;tmpi, name);
		} else {
			switch (info_data-&gt;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-&gt;s) {
						add_assoc_stringl(&amp;tmpi, name, &quot;&quot;, 0);
					} else {
						add_assoc_stringl(&amp;tmpi, name, info_value-&gt;s, info_data-&gt;length);
					}
					break;

				case TAG_FMT_STRING: {
					const char *val = info_value-&gt;s ? info_value-&gt;s : &quot;&quot;;
					if (section_index==SECTION_COMMENT) {
						add_index_string(&amp;tmpi, idx++, val);
					} else {
						add_assoc_string(&amp;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-&gt;length;
					if (l &gt; 1) {
						array_init(&amp;array);
					}
					for (int ap = 0; ap &lt; l; ap++) {
						if (l&gt;1) {
							info_value = &amp;info_data-&gt;value.list[ap];
						}
						switch (info_data-&gt;format) {
							case TAG_FMT_BYTE:
								if (l&gt;1) {
									info_value = &amp;info_data-&gt;value;
									for (int b = 0; b &lt; l; b++) {
										add_index_long(&amp;array, b, (int)(info_value-&gt;s[b]));
									}
									break;
								}
								ZEND_FALLTHROUGH;
							case TAG_FMT_USHORT:
							case TAG_FMT_ULONG:
								if (l==1) {
									add_assoc_long(&amp;tmpi, name, (int)info_value-&gt;u);
								} else {
									add_index_long(&amp;array, ap, (int)info_value-&gt;u);
								}
								break;

							case TAG_FMT_URATIONAL:
								snprintf(buffer, sizeof(buffer), &quot;%u/%u&quot;, info_value-&gt;ur.num, info_value-&gt;ur.den);
								if (l==1) {
									add_assoc_string(&amp;tmpi, name, buffer);
								} else {
									add_index_string(&amp;array, ap, buffer);
								}
								break;

							case TAG_FMT_SBYTE:
								if (l&gt;1) {
									info_value = &amp;info_data-&gt;value;
									for (int b = 0; b &lt; l; b++) {
										add_index_long(&amp;array, ap, (int)info_value-&gt;s[b]);
									}
									break;
								}
								ZEND_FALLTHROUGH;
							case TAG_FMT_SSHORT:
							case TAG_FMT_SLONG:
								if (l==1) {
									add_assoc_long(&amp;tmpi, name, info_value-&gt;i);
								} else {
									add_index_long(&amp;array, ap, info_value-&gt;i);
								}
								break;

							case TAG_FMT_SRATIONAL:
								snprintf(buffer, sizeof(buffer), &quot;%i/%i&quot;, info_value-&gt;sr.num, info_value-&gt;sr.den);
								if (l==1) {
									add_assoc_string(&amp;tmpi, name, buffer);
								} else {
									add_index_string(&amp;array, ap, buffer);
								}
								break;

							case TAG_FMT_SINGLE:
								if (l==1) {
									add_assoc_double(&amp;tmpi, name, info_value-&gt;f);
								} else {
									add_index_double(&amp;array, ap, info_value-&gt;f);
								}
								break;

							case TAG_FMT_DOUBLE:
								if (l==1) {
									add_assoc_double(&amp;tmpi, name, info_value-&gt;d);
								} else {
									add_index_double(&amp;array, ap, info_value-&gt;d);
								}
								break;
						}
					}
					if (l &gt; 1) {
						add_assoc_zval(&amp;tmpi, name, &amp;array);
					}
					break;
				}
			}
		}
	}
	if (sub_array) {
		add_assoc_zval(value, exif_get_sectionname(section_index), &amp;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: &#039;JFIFF&#039; AND (additional &#039;JFXX&#039;)    */
#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, &quot;Comment&quot;, 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-&gt;bits_per_sample = Data[2];
	result-&gt;height          = php_jpg_get16(Data+3);
	result-&gt;width           = php_jpg_get16(Data+5);
	result-&gt;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);
static bool exif_process_IFD_in_TIFF(image_info_type *ImageInfo, size_t dir_offset, int section_index);

/* {{{ exif_get_markername
	Get name of marker */
#ifdef EXIF_DEBUG
static char * exif_get_markername(int marker)
{
	switch(marker) {
		case 0xC0: return &quot;SOF0&quot;;
		case 0xC1: return &quot;SOF1&quot;;
		case 0xC2: return &quot;SOF2&quot;;
		case 0xC3: return &quot;SOF3&quot;;
		case 0xC4: return &quot;DHT&quot;;
		case 0xC5: return &quot;SOF5&quot;;
		case 0xC6: return &quot;SOF6&quot;;
		case 0xC7: return &quot;SOF7&quot;;
		case 0xC9: return &quot;SOF9&quot;;
		case 0xCA: return &quot;SOF10&quot;;
		case 0xCB: return &quot;SOF11&quot;;
		case 0xCD: return &quot;SOF13&quot;;
		case 0xCE: return &quot;SOF14&quot;;
		case 0xCF: return &quot;SOF15&quot;;
		case 0xD8: return &quot;SOI&quot;;
		case 0xD9: return &quot;EOI&quot;;
		case 0xDA: return &quot;SOS&quot;;
		case 0xDB: return &quot;DQT&quot;;
		case 0xDC: return &quot;DNL&quot;;
		case 0xDD: return &quot;DRI&quot;;
		case 0xDE: return &quot;DHP&quot;;
		case 0xDF: return &quot;EXP&quot;;
		case 0xE0: return &quot;APP0&quot;;
		case 0xE1: return &quot;EXIF&quot;;
		case 0xE2: return &quot;FPIX&quot;;
		case 0xE3: return &quot;APP3&quot;;
		case 0xE4: return &quot;APP4&quot;;
		case 0xE5: return &quot;APP5&quot;;
		case 0xE6: return &quot;APP6&quot;;
		case 0xE7: return &quot;APP7&quot;;
		case 0xE8: return &quot;APP8&quot;;
		case 0xE9: return &quot;APP9&quot;;
		case 0xEA: return &quot;APP10&quot;;
		case 0xEB: return &quot;APP11&quot;;
		case 0xEC: return &quot;APP12&quot;;
		case 0xED: return &quot;APP13&quot;;
		case 0xEE: return &quot;APP14&quot;;
		case 0xEF: return &quot;APP15&quot;;
		case 0xF0: return &quot;JPG0&quot;;
		case 0xFD: return &quot;JPG13&quot;;
		case 0xFE: return &quot;COM&quot;;
		case 0x01: return &quot;TEM&quot;;
	}
	return &quot;Unknown&quot;;
}
#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(), &quot;l&quot;, &amp;tag) == FAILURE) {
		RETURN_THROWS();
	}

	szTemp = exif_get_tagname(tag, tag_table_IFD);
	if (tag &lt; 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-&gt;format] * info_data-&gt;length;
	value_ptr = safe_emalloc(max(byte_count, 4), 1, 0);
	memset(value_ptr, 0, 4);
	if (!info_data-&gt;length) {
		return value_ptr;
	}
	if (info_data-&gt;format == TAG_FMT_UNDEFINED || info_data-&gt;format == TAG_FMT_STRING
	  || (byte_count&gt;1 &amp;&amp; (info_data-&gt;format == TAG_FMT_BYTE || info_data-&gt;format == TAG_FMT_SBYTE))
	) {
		memcpy(value_ptr, info_data-&gt;value.s, byte_count);
		return value_ptr;
	} else if (info_data-&gt;format == TAG_FMT_BYTE) {
		*value_ptr = info_data-&gt;value.u;
		return value_ptr;
	} else if (info_data-&gt;format == TAG_FMT_SBYTE) {
		*value_ptr = info_data-&gt;value.i;
		return value_ptr;
	} else {
		data_ptr = value_ptr;
		for(i=0; i&lt;info_data-&gt;length; i++) {
			if (info_data-&gt;length==1) {
				info_value = &amp;info_data-&gt;value;
			} else {
				info_value = &amp;info_data-&gt;value.list[i];
			}
			switch(info_data-&gt;format) {
				case TAG_FMT_USHORT:
					php_ifd_set16u(data_ptr, info_value-&gt;u, motorola_intel);
					data_ptr += 2;
					break;
				case TAG_FMT_ULONG:
					php_ifd_set32u(data_ptr, info_value-&gt;u, motorola_intel);
					data_ptr += 4;
					break;
				case TAG_FMT_SSHORT:
					php_ifd_set16u(data_ptr, info_value-&gt;i, motorola_intel);
					data_ptr += 2;
					break;
				case TAG_FMT_SLONG:
					php_ifd_set32u(data_ptr, info_value-&gt;i, motorola_intel);
					data_ptr += 4;
					break;
				case TAG_FMT_URATIONAL:
					php_ifd_set32u(data_ptr,   info_value-&gt;sr.num, motorola_intel);
					php_ifd_set32u(data_ptr+4, info_value-&gt;sr.den, motorola_intel);
					data_ptr += 8;
					break;
				case TAG_FMT_SRATIONAL:
					php_ifd_set32u(data_ptr,   info_value-&gt;ur.num, motorola_intel);
					php_ifd_set32u(data_ptr+4, info_value-&gt;ur.den, motorola_intel);
					data_ptr += 8;
					break;
				case TAG_FMT_SINGLE:
					memcpy(data_ptr, &amp;info_value-&gt;f, 4);
					data_ptr += 4;
					break;
				case TAG_FMT_DOUBLE:
					memcpy(data_ptr, &amp;info_value-&gt;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-&gt;read_thumbnail || !ImageInfo-&gt;Thumbnail.offset || !ImageInfo-&gt;Thumbnail.size) {
		return; /* ignore this call */
	}
#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Thumbnail: filetype = %d&quot;, ImageInfo-&gt;Thumbnail.filetype);
#endif
	switch(ImageInfo-&gt;Thumbnail.filetype) {
		default:
		case IMAGE_FILETYPE_JPEG:
			/* done */
			break;
		case IMAGE_FILETYPE_TIFF_II:
		case IMAGE_FILETYPE_TIFF_MM:
			info_list = &amp;ImageInfo-&gt;info_list[SECTION_THUMBNAIL];
			new_size  = 8 + 2 + info_list-&gt;count * 12 + 4;
#ifdef EXIF_DEBUG
			exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Thumbnail: size of signature + directory(%d): 0x%02X&quot;, info_list-&gt;count, new_size);
#endif
			new_value= new_size; /* offset for ifd values outside ifd directory */
			for (i=0; i&lt;info_list-&gt;count; i++) {
				info_data  = &amp;info_list-&gt;list[i];
				byte_count = php_tiff_bytes_per_format[info_data-&gt;format] * info_data-&gt;length;
				if (byte_count &gt; 4) {
					new_size += byte_count;
				}
			}
			new_move = new_size;
			new_data = safe_erealloc(ImageInfo-&gt;Thumbnail.data, 1, ImageInfo-&gt;Thumbnail.size, new_size);
			ImageInfo-&gt;Thumbnail.data = new_data;
			memmove(ImageInfo-&gt;Thumbnail.data + new_move, ImageInfo-&gt;Thumbnail.data, ImageInfo-&gt;Thumbnail.size);
			ImageInfo-&gt;Thumbnail.size += new_size;
			/* fill in data */
			if (ImageInfo-&gt;motorola_intel) {
				memcpy(new_data, &quot;MM\x00\x2a\x00\x00\x00\x08&quot;, 8);
			} else {
				memcpy(new_data, &quot;II\x2a\x00\x08\x00\x00\x00&quot;, 8);
			}
			new_data += 8;
			php_ifd_set16u(new_data, info_list-&gt;count, ImageInfo-&gt;motorola_intel);
			new_data += 2;
			for (i=0; i&lt;info_list-&gt;count; i++) {
				info_data  = &amp;info_list-&gt;list[i];
				byte_count = php_tiff_bytes_per_format[info_data-&gt;format] * info_data-&gt;length;
#ifdef EXIF_DEBUG
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Thumbnail: process tag(x%04X=%s): %s%s (%d bytes)&quot;, info_data-&gt;tag, exif_get_tagname_debug(info_data-&gt;tag, tag_table_IFD), (info_data-&gt;length&gt;1)&amp;&amp;info_data-&gt;format!=TAG_FMT_UNDEFINED&amp;&amp;info_data-&gt;format!=TAG_FMT_STRING?&quot;ARRAY OF &quot;:&quot;&quot;, exif_get_tagformat(info_data-&gt;format), byte_count);
#endif
				if (info_data-&gt;tag==TAG_STRIP_OFFSETS || info_data-&gt;tag==TAG_JPEG_INTERCHANGE_FORMAT) {
					php_ifd_set16u(new_data + 0, info_data-&gt;tag,    ImageInfo-&gt;motorola_intel);
					php_ifd_set16u(new_data + 2, TAG_FMT_ULONG,     ImageInfo-&gt;motorola_intel);
					php_ifd_set32u(new_data + 4, 1,                 ImageInfo-&gt;motorola_intel);
					php_ifd_set32u(new_data + 8, new_move,          ImageInfo-&gt;motorola_intel);
				} else {
					php_ifd_set16u(new_data + 0, info_data-&gt;tag,    ImageInfo-&gt;motorola_intel);
					php_ifd_set16u(new_data + 2, info_data-&gt;format, ImageInfo-&gt;motorola_intel);
					php_ifd_set32u(new_data + 4, info_data-&gt;length, ImageInfo-&gt;motorola_intel);
					value_ptr  = exif_ifd_make_value(info_data, ImageInfo-&gt;motorola_intel);
					if (byte_count &lt;= 4) {
						memmove(new_data+8, value_ptr, 4);
					} else {
						php_ifd_set32u(new_data+8, new_value, ImageInfo-&gt;motorola_intel);
#ifdef EXIF_DEBUG
						exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Thumbnail: writing with value offset: 0x%04X + 0x%02X&quot;, new_value, byte_count);
#endif
						memmove(ImageInfo-&gt;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, &quot;Thumbnail: created&quot;);
#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-&gt;Thumbnail.data) {
		exif_error_docref(&quot;exif_read_data#error_mult_thumb&quot; EXIFERR_CC, ImageInfo, E_WARNING, &quot;Multiple possible thumbnails&quot;);
		return; /* Should not happen */
	}
	if (!ImageInfo-&gt;read_thumbnail)	{
		return; /* ignore this call */
	}
	/* according to exif2.1, the thumbnail is not supposed to be greater than 64K */
	if (ImageInfo-&gt;Thumbnail.size &gt;= 65536
	 || ImageInfo-&gt;Thumbnail.size &lt;= 0
	 || ImageInfo-&gt;Thumbnail.offset &lt;= 0
	) {
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Illegal thumbnail size/offset&quot;);
		return;
	}
	/* Check to make sure we are not going to go past the ExifLength */
	char *thumbnail = exif_offset_info_try_get(
		info, ImageInfo-&gt;Thumbnail.offset, ImageInfo-&gt;Thumbnail.size);
	if (!thumbnail) {
		EXIF_ERRLOG_THUMBEOF(ImageInfo)
		return;
	}
	ImageInfo-&gt;Thumbnail.data = estrndup(thumbnail, ImageInfo-&gt;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] = &#039;\0&#039;;
		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 zend_strnlen in conjunction with memcpy and add the NUL
	 * char.
	 * estrdup would sometimes allocate more memory and does not return length
	 */
	if ((byte_count=zend_strnlen(value, byte_count)) &gt; 0) {
		return exif_process_undefined(result, value, byte_count);
	}
	(*result) = estrndup(&quot;&quot;, 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&gt;=8) {
		const zend_encoding *from, *to;
		if (!memcmp(szValuePtr, &quot;UNICODE\0&quot;, 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 &gt;=2 &amp;&amp; !memcmp(szValuePtr, &quot;\xFE\xFF&quot;, 2)) {
				decode = &quot;UCS-2BE&quot;;
				szValuePtr = szValuePtr+2;
				ByteCount -= 2;
			} else if (ByteCount &gt;=2 &amp;&amp; !memcmp(szValuePtr, &quot;\xFF\xFE&quot;, 2)) {
				decode = &quot;UCS-2LE&quot;;
				szValuePtr = szValuePtr+2;
				ByteCount -= 2;
			} else if (ImageInfo-&gt;motorola_intel) {
				decode = ImageInfo-&gt;decode_unicode_be;
			} else {
				decode = ImageInfo-&gt;decode_unicode_le;
			}
			to = zend_multibyte_fetch_encoding(ImageInfo-&gt;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,
					&amp;len,
					(unsigned char*)szValuePtr,
					ByteCount,
					to,
					from) == (size_t)-1) {
				len = exif_process_string_raw(pszInfoPtr, szValuePtr, ByteCount);
			}
			return len;
		} else if (!memcmp(szValuePtr, &quot;ASCII\0\0\0&quot;, 8)) {
			*pszEncoding = estrdup((const char*)szValuePtr);
			szValuePtr = szValuePtr+8;
			ByteCount -= 8;
		} else if (!memcmp(szValuePtr, &quot;JIS\0\0\0\0\0&quot;, 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-&gt;encode_jis);
			from = zend_multibyte_fetch_encoding(ImageInfo-&gt;motorola_intel ? ImageInfo-&gt;decode_jis_be : ImageInfo-&gt;decode_jis_le);
			if (!to || !from || zend_multibyte_encoding_converter(
					(unsigned char**)pszInfoPtr,
					&amp;len,
					(unsigned char*)szValuePtr,
					ByteCount,
					to,
					from) == (size_t)-1) {
				len = exif_process_string_raw(pszInfoPtr, szValuePtr, ByteCount);
			}
			return len;
		} else if (!memcmp(szValuePtr, &quot;\0\0\0\0\0\0\0\0&quot;, 8)) {
			/* 8 NULL means undefined and should be ASCII... */
			*pszEncoding = estrdup(&quot;UNDEFINED&quot;);
			szValuePtr = szValuePtr+8;
			ByteCount -= 8;
		}
	}

	/* Olympus has this padded with trailing spaces.  Remove these first. */
	if (ByteCount&gt;0) {
		for (a=ByteCount-1;a &amp;&amp; szValuePtr[a]==&#039; &#039;;a--) {
			(szValuePtr)[a] = &#039;\0&#039;;
		}
	}

	/* 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-&gt;tag = tag;
	xp_field-&gt;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**)&amp;xp_field-&gt;value,
			&amp;xp_field-&gt;size,
			(unsigned char*)szValuePtr,
			ByteCount,
			zend_multibyte_fetch_encoding(ImageInfo-&gt;encode_unicode),
			zend_multibyte_fetch_encoding(ImageInfo-&gt;motorola_intel ? ImageInfo-&gt;decode_unicode_be : ImageInfo-&gt;decode_unicode_le)
			) == (size_t)-1) {
		xp_field-&gt;size = exif_process_string_raw(&amp;xp_field-&gt;value, szValuePtr, ByteCount);
	}
	return xp_field-&gt;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&lt;=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, &quot;No maker note data found. Detected maker: %s (length = %d)&quot;, ImageInfo-&gt;make, ImageInfo-&gt;make ? strlen(ImageInfo-&gt;make) : 0);
#endif
			/* unknown manufacturer, not an error, use it as a string */
			return true;
		}

		maker_note = maker_note_array+i;

		if (maker_note-&gt;make &amp;&amp; (!ImageInfo-&gt;make || strcmp(maker_note-&gt;make, ImageInfo-&gt;make)))
			continue;
		if (maker_note-&gt;id_string &amp;&amp; value_len &gt;= maker_note-&gt;id_string_len
				&amp;&amp; strncmp(maker_note-&gt;id_string, value_ptr, maker_note-&gt;id_string_len))
			continue;
		break;
	}

	if (value_len &lt; 2 || maker_note-&gt;offset &gt;= value_len - 1) {
		/* Do not go past the value end */
		exif_error_docref(&quot;exif_read_data#error_ifd&quot; EXIFERR_CC, ImageInfo, E_WARNING, &quot;IFD data too short: 0x%04X offset 0x%04X&quot;, value_len, maker_note-&gt;offset);
		return true;
	}

	if (UNEXPECTED(maker_note-&gt;tag_table == REQUIRES_CUSTOM_PARSING)) {
		/* Custom parsing required, which is not implemented at this point
		 * Return true so that other metadata can still be parsed. */
		return true;
	}

	dir_start = value_ptr + maker_note-&gt;offset;

#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Process %s @0x%04X + 0x%04X=%d: %s&quot;, exif_get_sectionname(section_index), (intptr_t)dir_start-(intptr_t)info-&gt;offset_base+maker_note-&gt;offset+displacement, value_len, value_len, exif_char_dump(value_ptr, value_len, (intptr_t)dir_start-(intptr_t)info-&gt;offset_base+maker_note-&gt;offset+displacement));
#endif

	ImageInfo-&gt;sections_found |= FOUND_MAKERNOTE;

	old_motorola_intel = ImageInfo-&gt;motorola_intel;
	switch (maker_note-&gt;byte_order) {
		case MN_ORDER_INTEL:
			ImageInfo-&gt;motorola_intel = 0;
			break;
		case MN_ORDER_MOTOROLA:
			ImageInfo-&gt;motorola_intel = 1;
			break;
		default:
		case MN_ORDER_NORMAL:
			break;
	}

	NumDirEntries = php_ifd_get16u(dir_start, ImageInfo-&gt;motorola_intel);

	/* It can be that motorola_intel is wrongly mapped, let&#039;s try inverting it */
	if ((2+NumDirEntries*12) &gt; value_len) {
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Potentially invalid endianess, trying again with different endianness before imminent failure.&quot;);

		ImageInfo-&gt;motorola_intel = ImageInfo-&gt;motorola_intel == 0 ? 1 : 0;
		NumDirEntries = php_ifd_get16u(dir_start, ImageInfo-&gt;motorola_intel);
	}

	if ((2+NumDirEntries*12) &gt; value_len) {
		exif_error_docref(&quot;exif_read_data#error_ifd&quot; EXIFERR_CC, ImageInfo, E_WARNING, &quot;Illegal IFD size: 2 + 0x%04X*12 = 0x%04X &gt; 0x%04X&quot;, NumDirEntries, 2+NumDirEntries*12, value_len);
		return false;
	}
	if ((dir_start - value_ptr) &gt; value_len - (2+NumDirEntries*12)) {
		exif_error_docref(&quot;exif_read_data#error_ifd&quot; EXIFERR_CC, ImageInfo, E_WARNING, &quot;Illegal IFD size: 0x%04X &gt; 0x%04X&quot;, (dir_start - value_ptr) + (2+NumDirEntries*12), value_len);
		return false;
	}

	switch (maker_note-&gt;offset_mode) {
		case MN_OFFSET_MAKER:
			exif_offset_info_init(&amp;new_info, value_ptr, value_ptr, value_len);
			info = &amp;new_info;
			break;
		default:
		case MN_OFFSET_NORMAL:
			break;
	}

	for (de=0;de&lt;NumDirEntries;de++) {
		size_t offset = 2 + 12 * de;
		if (!exif_process_IFD_TAG(ImageInfo, dir_start + offset,
								  info, displacement, section_index, 0, maker_note-&gt;tag_table)) {
			return false;
		}
	}
	ImageInfo-&gt;motorola_intel = old_motorola_intel;
/*	NextDirOffset (must be NULL) = php_ifd_get32u(dir_start+2+12*de, ImageInfo-&gt;motorola_intel);*/
#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Subsection %s done&quot;, exif_get_sectionname(SECTION_MAKERNOTE));
#endif
	return true;
}
/* }}} */

#define REQUIRE_NON_EMPTY() do { \
	if (byte_count == 0) { \
		exif_error_docref(&quot;exif_read_data#error_ifd&quot; EXIFERR_CC, ImageInfo, E_WARNING, &quot;Process tag(x%04X=%s): Cannot be empty&quot;, 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_impl(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 */

	tag = php_ifd_get16u(dir_entry, ImageInfo-&gt;motorola_intel);
	format = php_ifd_get16u(dir_entry+2, ImageInfo-&gt;motorola_intel);
	components = php_ifd_get32u(dir_entry+4, ImageInfo-&gt;motorola_intel);

	if (!format || format &gt; NUM_FORMATS) {
		/* (-1) catches illegal zero case as unsigned underflows to positive large. */
		exif_error_docref(&quot;exif_read_data#error_ifd&quot; EXIFERR_CC, ImageInfo, E_WARNING, &quot;Process tag(x%04X=%s): Illegal format code 0x%04X, suppose BYTE&quot;, 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 &lt; 0 || (byte_count_signed &gt; INT32_MAX)) {
		exif_error_docref(&quot;exif_read_data#error_ifd&quot; EXIFERR_CC, ImageInfo, E_WARNING, &quot;Process tag(x%04X=%s): Illegal byte_count&quot;, tag, exif_get_tagname_debug(tag, tag_table));
		return false;
	}

	byte_count = (size_t)byte_count_signed;

	if (byte_count &gt; 4) {
		/* If its bigger than 4 bytes, the dir entry contains an offset. */
		offset_val = php_ifd_get32u(dir_entry+8, ImageInfo-&gt;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&#039;t we also be taking &quot;displacement&quot; into account here?
			if (byte_count &gt; ImageInfo-&gt;FileSize || offset_val&gt;ImageInfo-&gt;FileSize-byte_count || (ImageInfo-&gt;FileType!=IMAGE_FILETYPE_TIFF_II &amp;&amp; ImageInfo-&gt;FileType!=IMAGE_FILETYPE_TIFF_MM &amp;&amp; ImageInfo-&gt;FileType!=IMAGE_FILETYPE_JPEG)) {
				exif_error_docref(&quot;exif_read_data#error_ifd&quot; EXIFERR_CC, ImageInfo, E_WARNING, &quot;Process tag(x%04X=%s): Illegal pointer offset(x%04X + x%04X = x%04X &gt; x%04X)&quot;, tag, exif_get_tagname_debug(tag, tag_table), offset_val, byte_count, offset_val+byte_count, ImageInfo-&gt;FileSize);
				return false;
			}
			if (byte_count&gt;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
				 * explicitly before returning. */
				memset(&amp;cbuf, 0, sizeof(cbuf));
				value_ptr = cbuf;
			}

			fpos = php_stream_tell(ImageInfo-&gt;infile);
			php_stream_seek(ImageInfo-&gt;infile, displacement+offset_val, SEEK_SET);
			fgot = php_stream_tell(ImageInfo-&gt;infile);
			if (fgot!=displacement+offset_val) {
				EFREE_IF(outside);
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Wrong file pointer: 0x%08X != 0x%08X&quot;, fgot, displacement+offset_val);
				return false;
			}
			fgot = exif_read_from_stream_file_looped(ImageInfo-&gt;infile, value_ptr, byte_count);
			php_stream_seek(ImageInfo-&gt;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-&gt;offset_base;
	}

	ImageInfo-&gt;sections_found |= FOUND_ANY_TAG;
#ifdef EXIF_DEBUG
	dump_data = exif_dump_data(&amp;dump_free, format, components, ImageInfo-&gt;motorola_intel, value_ptr);
	exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE,
		&quot;Process tag(x%04X=%s,@0x%04X + x%04X(=%d)): %s%s %s&quot;,
		tag, exif_get_tagname_debug(tag, tag_table), offset_val+displacement, byte_count, byte_count, (components&gt;1)&amp;&amp;format!=TAG_FMT_UNDEFINED&amp;&amp;format!=TAG_FMT_STRING?&quot;ARRAY OF &quot;:&quot;&quot;, 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-&gt;Thumbnail.data) {
			REQUIRE_NON_EMPTY();
			switch(tag) {
				case TAG_IMAGEWIDTH:
				case TAG_COMP_IMAGE_WIDTH:
					ImageInfo-&gt;Thumbnail.width = exif_convert_any_to_int(value_ptr, exif_rewrite_tag_format_to_unsigned(format), ImageInfo-&gt;motorola_intel);
					break;

				case TAG_IMAGEHEIGHT:
				case TAG_COMP_IMAGE_HEIGHT:
					ImageInfo-&gt;Thumbnail.height = exif_convert_any_to_int(value_ptr, exif_rewrite_tag_format_to_unsigned(format), ImageInfo-&gt;motorola_intel);
					break;

				case TAG_STRIP_OFFSETS:
				case TAG_JPEG_INTERCHANGE_FORMAT:
					/* accept both formats */
					ImageInfo-&gt;Thumbnail.offset = exif_convert_any_to_int(value_ptr, exif_rewrite_tag_format_to_unsigned(format), ImageInfo-&gt;motorola_intel);
					break;

				case TAG_STRIP_BYTE_COUNTS:
					if (ImageInfo-&gt;FileType == IMAGE_FILETYPE_TIFF_II || ImageInfo-&gt;FileType == IMAGE_FILETYPE_TIFF_MM) {
						ImageInfo-&gt;Thumbnail.filetype = ImageInfo-&gt;FileType;
					} else {
						/* motorola is easier to read */
						ImageInfo-&gt;Thumbnail.filetype = IMAGE_FILETYPE_TIFF_MM;
					}
					ImageInfo-&gt;Thumbnail.size = exif_convert_any_to_int(value_ptr, exif_rewrite_tag_format_to_unsigned(format), ImageInfo-&gt;motorola_intel);
					break;

				case TAG_JPEG_INTERCHANGE_FORMAT_LEN:
					if (ImageInfo-&gt;Thumbnail.filetype == IMAGE_FILETYPE_UNKNOWN) {
						ImageInfo-&gt;Thumbnail.filetype = IMAGE_FILETYPE_JPEG;
						ImageInfo-&gt;Thumbnail.size = exif_convert_any_to_int(value_ptr, exif_rewrite_tag_format_to_unsigned(format), ImageInfo-&gt;motorola_intel);
					}
					break;
			}
		}
	} else {
		if (section_index==SECTION_IFD0 || section_index==SECTION_EXIF)
		switch(tag) {
			case TAG_COPYRIGHT:
				/* check for &quot;&lt;photographer&gt; NUL &lt;editor&gt; NUL&quot; */
				if (byte_count&gt;1 &amp;&amp; (length=zend_strnlen(value_ptr, byte_count)) &gt; 0) {
					if (length&lt;byte_count-1) {
						/* When there are any characters after the first NUL */
						EFREE_IF(ImageInfo-&gt;CopyrightPhotographer);
						EFREE_IF(ImageInfo-&gt;CopyrightEditor);
						EFREE_IF(ImageInfo-&gt;Copyright);
						ImageInfo-&gt;CopyrightPhotographer  = estrdup(value_ptr);
						ImageInfo-&gt;CopyrightEditor        = estrndup(value_ptr+length+1, byte_count-length-1);
						spprintf(&amp;ImageInfo-&gt;Copyright, 0, &quot;%s, %s&quot;, ImageInfo-&gt;CopyrightPhotographer, ImageInfo-&gt;CopyrightEditor);
						/* format = TAG_FMT_UNDEFINED; this mustn&#039;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-&gt;Copyright);
						ImageInfo-&gt;Copyright = estrndup(value_ptr, byte_count);
					}
				}
				break;

			case TAG_USERCOMMENT:
				EFREE_IF(ImageInfo-&gt;UserComment);
				ImageInfo-&gt;UserComment = NULL;
				EFREE_IF(ImageInfo-&gt;UserCommentEncoding);
				ImageInfo-&gt;UserCommentEncoding = NULL;
				ImageInfo-&gt;UserCommentLength = exif_process_user_comment(ImageInfo, &amp;(ImageInfo-&gt;UserComment), &amp;(ImageInfo-&gt;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-&gt;xp_fields.list, (ImageInfo-&gt;xp_fields.count+1), sizeof(xp_field_type), 0);
				ImageInfo-&gt;sections_found |= FOUND_WINXP;
				ImageInfo-&gt;xp_fields.list = tmp_xp;
				ImageInfo-&gt;xp_fields.count++;
				exif_process_unicode(ImageInfo, &amp;(ImageInfo-&gt;xp_fields.list[ImageInfo-&gt;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-&gt;ApertureFNumber = (float)exif_convert_any_format(value_ptr, format, ImageInfo-&gt;motorola_intel);
				break;

			case TAG_APERTURE:
			case TAG_MAX_APERTURE:
				/* More relevant info always comes earlier, so only use this field if we don&#039;t
				   have appropriate aperture information yet. */
				if (ImageInfo-&gt;ApertureFNumber == 0) {
					REQUIRE_NON_EMPTY();
					ImageInfo-&gt;ApertureFNumber
						= expf(exif_convert_any_format(value_ptr, format, ImageInfo-&gt;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&#039;t already have it from somewhere else.
				   SHUTTERSPEED comes after EXPOSURE TIME
				  */
				if (ImageInfo-&gt;ExposureTime == 0) {
					REQUIRE_NON_EMPTY();
					ImageInfo-&gt;ExposureTime
						= expf(-exif_convert_any_format(value_ptr, format, ImageInfo-&gt;motorola_intel)*logf(2.0));
				}
				break;
			case TAG_EXPOSURETIME:
				ImageInfo-&gt;ExposureTime = -1;
				break;

			case TAG_COMP_IMAGE_WIDTH:
				REQUIRE_NON_EMPTY();
				ImageInfo-&gt;ExifImageWidth = exif_convert_any_to_int(value_ptr, exif_rewrite_tag_format_to_unsigned(format), ImageInfo-&gt;motorola_intel);
				break;

			case TAG_FOCALPLANE_X_RES:
				REQUIRE_NON_EMPTY();
				ImageInfo-&gt;FocalplaneXRes = exif_convert_any_format(value_ptr, format, ImageInfo-&gt;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-&gt;Distance = (float)exif_convert_any_format(value_ptr, format, ImageInfo-&gt;motorola_intel);
				break;

			case TAG_FOCALPLANE_RESOLUTION_UNIT:
				REQUIRE_NON_EMPTY();
				switch (exif_convert_any_to_int(value_ptr, format, ImageInfo-&gt;motorola_intel)) {
					case 1: ImageInfo-&gt;FocalplaneUnits = 25.4; break; /* inch */
					case 2:
						/* According to the information I was using, 2 means meters.
						   But looking at the Cannon powershot&#039;s files, inches is the only
						   sensible value. */
						ImageInfo-&gt;FocalplaneUnits = 25.4;
						break;

					case 3: ImageInfo-&gt;FocalplaneUnits = 10;   break;  /* centimeter */
					case 4: ImageInfo-&gt;FocalplaneUnits = 1;    break;  /* milimeter  */
					case 5: ImageInfo-&gt;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, &quot;Skip SUB IFD&quot;);
				}
				break;

			case TAG_MAKE:
				EFREE_IF(ImageInfo-&gt;make);
				ImageInfo-&gt;make = estrndup(value_ptr, byte_count);
				break;
			case TAG_MODEL:
				EFREE_IF(ImageInfo-&gt;model);
				ImageInfo-&gt;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, &quot;Found EXIF&quot;);
#endif
							ImageInfo-&gt;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, &quot;Found GPS&quot;);
#endif
							ImageInfo-&gt;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, &quot;Found INTEROPERABILITY&quot;);
#endif
							ImageInfo-&gt;sections_found |= FOUND_INTEROP;
							sub_section_index = SECTION_INTEROP;
							break;
					}
					offset_val = php_ifd_get32u(value_ptr, ImageInfo-&gt;motorola_intel);
					Subdir_start = exif_offset_info_try_get(info, offset_val, 0);
					if (!Subdir_start) {
						exif_error_docref(&quot;exif_read_data#error_ifd&quot; EXIFERR_CC, ImageInfo, E_WARNING, &quot;Illegal IFD Pointer&quot;);
						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, &quot;Subsection %s done&quot;, 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;
}
/* }}} */

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)
{
	bool result;
	/* Protect against corrupt headers */
	if (ImageInfo-&gt;ifd_count++ &gt; MAX_IFD_TAGS) {
		exif_error_docref(&quot;exif_read_data#error_ifd&quot; EXIFERR_CC, ImageInfo, E_WARNING, &quot;corrupt EXIF header: maximum IFD tag count reached&quot;);
		return false;
	}
	if (ImageInfo-&gt;ifd_nesting_level &gt; MAX_IFD_NESTING_LEVEL) {
		exif_error_docref(&quot;exif_read_data#error_ifd&quot; EXIFERR_CC, ImageInfo, E_WARNING, &quot;corrupt EXIF header: maximum directory nesting level reached&quot;);
		return false;
	}
	ImageInfo-&gt;ifd_nesting_level++;
	result = exif_process_IFD_TAG_impl(ImageInfo, dir_entry, info, displacement, section_index, ReadNextIFD, tag_table);
	ImageInfo-&gt;ifd_nesting_level--;
	return result;
}

/* {{{ 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, &quot;Process %s (x%04X(=%d))&quot;, exif_get_sectionname(section_index), exif_offset_info_length(info), exif_offset_info_length(info));
#endif

	ImageInfo-&gt;sections_found |= FOUND_IFD0;

	if (!exif_offset_info_contains(info, dir_start, 2)) {
		exif_error_docref(&quot;exif_read_data#error_ifd&quot; EXIFERR_CC, ImageInfo, E_WARNING, &quot;Illegal IFD size&quot;);
		return false;
	}

	NumDirEntries = php_ifd_get16u(dir_start, ImageInfo-&gt;motorola_intel);

	if (!exif_offset_info_contains(info, dir_start+2, NumDirEntries*12)) {
		exif_error_docref(&quot;exif_read_data#error_ifd&quot; EXIFERR_CC, ImageInfo, E_WARNING, &quot;Illegal IFD size: x%04X + 2 + x%04X*12 = x%04X &gt; x%04X&quot;, (int)((size_t)dir_start+2-(size_t)info-&gt;valid_start), NumDirEntries, (int)((size_t)dir_start+2+NumDirEntries*12-(size_t)info-&gt;valid_start), info-&gt;valid_end - info-&gt;valid_start);
		return false;
	}

	for (de=0;de&lt;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(&quot;exif_read_data#error_ifd&quot; EXIFERR_CC, ImageInfo, E_WARNING, &quot;Illegal IFD size&quot;);
		return false;
	}

	if (tag != TAG_EXIF_IFD_POINTER &amp;&amp; tag != TAG_GPS_IFD_POINTER) {
		NextDirOffset = php_ifd_get32u(dir_start+2+12*de, ImageInfo-&gt;motorola_intel);
	}

	if (NextDirOffset) {
		char *next_dir_start = exif_offset_info_try_get(info, NextDirOffset, 0);
		if (!next_dir_start) {
			exif_error_docref(&quot;exif_read_data#error_ifd&quot; EXIFERR_CC, ImageInfo, E_WARNING, &quot;Illegal IFD offset&quot;);
			return false;
		}
		/* That is the IFD for the first thumbnail */
#ifdef EXIF_DEBUG
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Expect next IFD to be thumbnail&quot;);
#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, &quot;Thumbnail size: 0x%04X&quot;, ImageInfo-&gt;Thumbnail.size);
#endif
			if (ImageInfo-&gt;Thumbnail.filetype != IMAGE_FILETYPE_UNKNOWN
			&amp;&amp;  ImageInfo-&gt;Thumbnail.size
			&amp;&amp;  ImageInfo-&gt;Thumbnail.offset
			&amp;&amp;  ImageInfo-&gt;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 &lt; 2) {
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Missing TIFF alignment marker&quot;);
		return;
	}

	/* set the thumbnail stuff to nothing so we can test to see if they get set up */
	if (memcmp(CharBuf, &quot;II&quot;, 2) == 0) {
		ImageInfo-&gt;motorola_intel = 0;
	} else if (memcmp(CharBuf, &quot;MM&quot;, 2) == 0) {
		ImageInfo-&gt;motorola_intel = 1;
	} else {
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Invalid TIFF alignment marker&quot;);
		return;
	}

	/* Check the next two values for correctness. */
	if (length &lt; 8) {
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Invalid TIFF start (1)&quot;);
		return;
	}
	exif_value_2a = php_ifd_get16u(CharBuf+2, ImageInfo-&gt;motorola_intel);
	offset_of_ifd = php_ifd_get32u(CharBuf+4, ImageInfo-&gt;motorola_intel);
	if (exif_value_2a != 0x2a || offset_of_ifd &lt; 0x08) {
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Invalid TIFF start (1)&quot;);
		return;
	}
	if (offset_of_ifd &gt; length) {
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Invalid IFD start&quot;);
		return;
	}

	ImageInfo-&gt;sections_found |= FOUND_IFD0;
	/* First directory starts at offset 8. Offsets starts at 0. */
	exif_offset_info_init(&amp;info, CharBuf, CharBuf, length/*-14*/);
	exif_process_IFD_in_JPEG(ImageInfo, CharBuf+offset_of_ifd, &amp;info, displacement, SECTION_IFD0, 0);

#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Process TIFF in JPEG done&quot;);
#endif

	/* Compute the CCD width, in millimeters. */
	if (ImageInfo-&gt;FocalplaneXRes != 0) {
		ImageInfo-&gt;CCDWidth = (float)(ImageInfo-&gt;ExifImageWidth * ImageInfo-&gt;FocalplaneUnits / ImageInfo-&gt;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 &lt;= 8 || memcmp(CharBuf+2, ExifHeader, 6)) {
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Incorrect APP1 Exif Identifier Code&quot;);
		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, &quot;Process APP1/EXIF done&quot;);
#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 = zend_strnlen(buffer+2, length-2)) &gt; 0) {
		exif_iif_add_tag(ImageInfo, SECTION_APP12, &quot;Company&quot;, TAG_NONE, TAG_FMT_STRING, l1, buffer+2, l1);
		if (length &gt; 2+l1+1) {
			l2 = zend_strnlen(buffer+2+l1+1, length-2-l1-1);
			exif_iif_add_tag(ImageInfo, SECTION_APP12, &quot;Info&quot;, TAG_NONE, TAG_FMT_STRING, l2, buffer+2+l1+1, l2);
		}
	}
#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Process section APP12 with l1=%d, l2=%d done&quot;, 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 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;

	while (true) {
#ifdef EXIF_DEBUG
		fpos = php_stream_tell(ImageInfo-&gt;infile);
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Needing section %d @ 0x%08X&quot;, ImageInfo-&gt;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 &amp;&amp; comment_correction) {
			comment_correction = 2;
		}
		do {
			if ((marker = php_stream_getc(ImageInfo-&gt;infile)) == EOF) {
				EXIF_ERRLOG_CORRUPT(ImageInfo)
				return false;
			}
			if (last_marker==M_COM &amp;&amp; comment_correction&gt;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 &amp;&amp; !comment_correction) {
			exif_error_docref(&quot;exif_read_data#error_mcom&quot; EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Image has corrupt COM section: some software set wrong length information&quot;);
		}
		if (last_marker==M_COM &amp;&amp; comment_correction)
			return M_EOI; /* ah illegal: char after COM section not 0xFF */

		fpos = php_stream_tell(ImageInfo-&gt;infile);

		/* safety net in case the above algorithm change dramatically, should not trigger */
		ZEND_ASSERT(marker != 0xff);

		/* Read the length of the section. */
		if ((lh = php_stream_getc(ImageInfo-&gt;infile)) == (unsigned int)EOF) {
			EXIF_ERRLOG_CORRUPT(ImageInfo)
			return false;
		}
		if ((ll = php_stream_getc(ImageInfo-&gt;infile)) == (unsigned int)EOF) {
			EXIF_ERRLOG_CORRUPT(ImageInfo)
			return false;
		}

		itemlen = (lh &lt;&lt; 8) | ll;

		if (itemlen &lt; 2) {
#ifdef EXIF_DEBUG
			exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;%s, Section length: 0x%02X%02X&quot;, EXIF_ERROR_CORRUPT, lh, ll);
#else
			EXIF_ERRLOG_CORRUPT(ImageInfo)
#endif
			return false;
		}

		sn = exif_file_sections_add(ImageInfo, marker, itemlen, NULL);
		Data = ImageInfo-&gt;file.list[sn].data;

		/* Store first two pre-read bytes. */
		Data[0] = (uchar)lh;
		Data[1] = (uchar)ll;

		got = exif_read_from_stream_file_looped(ImageInfo-&gt;infile, (char*)(Data+2), itemlen-2); /* Read the whole section. */
		if (got != itemlen-2) {
			exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Error reading from file: got=x%04X(=%d) != itemlen-2=x%04X(=%d)&quot;, got, got, itemlen-2, itemlen-2);
			return false;
		}

#ifdef EXIF_DEBUG
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Process section(x%02X=%s) @ x%04X + x%04X(=%d)&quot;, 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-&gt;read_all) {
					/* Determine how much file is left. */
					fpos = php_stream_tell(ImageInfo-&gt;infile);
					size = ImageInfo-&gt;FileSize - fpos;
					sn = exif_file_sections_add(ImageInfo, M_PSEUDO, size, NULL);
					Data = ImageInfo-&gt;file.list[sn].data;
					got = exif_read_from_stream_file_looped(ImageInfo-&gt;infile, (char*)Data, size);
					if (got != size) {
						EXIF_ERRLOG_FILEEOF(ImageInfo)
						return false;
					}
				}
				return true;

			case M_EOI:   /* in case it&#039;s a tables-only JPEG stream */
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;No image in jpeg!&quot;);
				return (ImageInfo-&gt;sections_found&amp;(~FOUND_COMPUTED)) ? true : false;

			case M_COM: /* Comment section */
				exif_process_COM(ImageInfo, (char *)Data, itemlen);
				break;

			case M_EXIF:
				if (!(ImageInfo-&gt;sections_found&amp;FOUND_IFD0)) {
					/*ImageInfo-&gt;sections_found |= FOUND_EXIF;*/
					/* Seen files from some &#039;U-lead&#039; 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) &lt; 6) {
					return false;
				}

				exif_process_SOFn(Data, marker, &amp;sof_info);
				ImageInfo-&gt;Width  = sof_info.width;
				ImageInfo-&gt;Height = sof_info.height;
				if (sof_info.num_components == 3) {
					ImageInfo-&gt;IsColor = 1;
				} else {
					ImageInfo-&gt;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, &quot;Done&quot;);
#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-&gt;Thumbnail.data;
	int             n, marker;
	size_t          length=2, pos=0;
	jpeg_sof_info   sof_info;

	if (!data || ImageInfo-&gt;Thumbnail.size &lt; 4) {
		return false; /* nothing to do here */
	}
	if (memcmp(data, &quot;\xFF\xD8\xFF&quot;, 3)) {
		if (!ImageInfo-&gt;Thumbnail.width &amp;&amp; !ImageInfo-&gt;Thumbnail.height) {
			exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Thumbnail is not a JPEG image&quot;);
		}
		return false;
	}
	for (;;) {
		pos += length;
		if (pos&gt;=ImageInfo-&gt;Thumbnail.size)
			return false;
		c = data[pos++];
		if (pos&gt;=ImageInfo-&gt;Thumbnail.size)
			return false;
		if (c != 0xFF) {
			return false;
		}
		n = 8;
		while ((c = data[pos++]) == 0xFF &amp;&amp; n--) {
			if (pos+3&gt;=ImageInfo-&gt;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&gt;=ImageInfo-&gt;Thumbnail.size)
			return false;
		length = php_jpg_get16(data+pos);
		if (length &gt; ImageInfo-&gt;Thumbnail.size || pos &gt;= ImageInfo-&gt;Thumbnail.size - length) {
			return false;
		}
#ifdef EXIF_DEBUG
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Thumbnail: process section(x%02X=%s) @ x%04X + x%04X&quot;, 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 &lt; 8 || ImageInfo-&gt;Thumbnail.size - 8 &lt; pos) {
					/* exif_process_SOFn needs 8 bytes */
					return false;
				}
				exif_process_SOFn(data+pos, marker, &amp;sof_info);
				ImageInfo-&gt;Thumbnail.height   = sof_info.height;
				ImageInfo-&gt;Thumbnail.width    = sof_info.width;
#ifdef EXIF_DEBUG
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Thumbnail: size: %d * %d&quot;, sof_info.width, sof_info.height);
#endif
				return true;

			case M_SOS:
			case M_EOI:
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Could not compute size of thumbnail&quot;);
				return false;
				break;

			default:
				/* just skip */
				break;
		}
	}

	exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Could not compute size of thumbnail&quot;);
	return false;
}
/* }}} */

/* {{{ exif_process_IFD_in_TIFF
 * Parse the TIFF header; */
static bool exif_process_IFD_in_TIFF_impl(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-&gt;FileSize &gt;= 2 &amp;&amp; ImageInfo-&gt;FileSize - 2 &gt;= dir_offset) {
		sn = exif_file_sections_add(ImageInfo, M_PSEUDO, 2, NULL);
#ifdef EXIF_DEBUG
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Read from TIFF: filesize(x%04X), IFD dir(x%04X + x%04X)&quot;, ImageInfo-&gt;FileSize, dir_offset, 2);
#endif
		php_stream_seek(ImageInfo-&gt;infile, dir_offset, SEEK_SET); /* we do not know the order of sections */
		if (UNEXPECTED(exif_read_from_stream_file_looped(ImageInfo-&gt;infile, (char*)ImageInfo-&gt;file.list[sn].data, 2) != 2)) {
			return false;
		}
		num_entries = php_ifd_get16u(ImageInfo-&gt;file.list[sn].data, ImageInfo-&gt;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-&gt;FileSize &gt;= dir_size &amp;&amp; ImageInfo-&gt;FileSize - dir_size &gt;= dir_offset) {
#ifdef EXIF_DEBUG
			exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Read from TIFF: filesize(x%04X), IFD dir(x%04X + x%04X), IFD entries(%d)&quot;, ImageInfo-&gt;FileSize, dir_offset+2, dir_size-2, num_entries);
#endif
			if (exif_file_sections_realloc(ImageInfo, sn, dir_size)) {
				return false;
			}
			if (UNEXPECTED(exif_read_from_stream_file_looped(ImageInfo-&gt;infile, (char*)(ImageInfo-&gt;file.list[sn].data+2), dir_size-2) != dir_size - 2)) {
				return false;
			}
			next_offset = php_ifd_get32u(ImageInfo-&gt;file.list[sn].data + dir_size - 4, ImageInfo-&gt;motorola_intel);
#ifdef EXIF_DEBUG
			exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Read from TIFF done, next offset x%04X&quot;, next_offset);
#endif
			/* now we have the directory we can look how long it should be */
			ifd_size = dir_size;
			for(i=0;i&lt;num_entries;i++) {
				dir_entry 	 = ImageInfo-&gt;file.list[sn].data+2+i*12;
				entry_tag    = php_ifd_get16u(dir_entry+0, ImageInfo-&gt;motorola_intel);
				entry_type   = php_ifd_get16u(dir_entry+2, ImageInfo-&gt;motorola_intel);
				if (entry_type &gt; NUM_FORMATS) {
					exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Read from TIFF: tag(0x%04X,%12s): Illegal format code 0x%04X, switching to BYTE&quot;, 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-&gt;motorola_intel);*/
				}
				entry_length = php_ifd_get32u(dir_entry+4, ImageInfo-&gt;motorola_intel) * php_tiff_bytes_per_format[entry_type];
				if (entry_length &lt;= 4) {
					switch(entry_type) {
						case TAG_FMT_USHORT:
							entry_value  = php_ifd_get16u(dir_entry+8, ImageInfo-&gt;motorola_intel);
							break;
						case TAG_FMT_SSHORT:
							entry_value  = php_ifd_get16s(dir_entry+8, ImageInfo-&gt;motorola_intel);
							break;
						case TAG_FMT_ULONG:
							entry_value  = php_ifd_get32u(dir_entry+8, ImageInfo-&gt;motorola_intel);
							break;
						case TAG_FMT_SLONG:
							entry_value  = php_ifd_get32s(dir_entry+8, ImageInfo-&gt;motorola_intel);
							break;
					}
					switch(entry_tag) {
						case TAG_IMAGEWIDTH:
						case TAG_COMP_IMAGE_WIDTH:
							ImageInfo-&gt;Width  = entry_value;
							break;
						case TAG_IMAGEHEIGHT:
						case TAG_COMP_IMAGE_HEIGHT:
							ImageInfo-&gt;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-&gt;IsColor = 0;
									break;
								case PMI_RGB:
								case PMI_PALETTE_COLOR:
								case PMI_SEPARATED:
								case PMI_YCBCR:
								case PMI_CIELAB:
									ImageInfo-&gt;IsColor = 1;
									break;
							}
							break;
					}
				} else {
					entry_offset = php_ifd_get32u(dir_entry+8, ImageInfo-&gt;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 &gt; dir_offset + ifd_size
					  &amp;&amp; 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, &quot;Resize struct: x%04X + x%04X - x%04X = x%04X&quot;, entry_offset, entry_length, dir_offset, ifd_size);
#endif
					}
				}
			}
			if (ImageInfo-&gt;FileSize &gt;= ImageInfo-&gt;file.list[sn].size &amp;&amp; ImageInfo-&gt;FileSize - ImageInfo-&gt;file.list[sn].size &gt;= dir_offset) {
				if (ifd_size &gt; dir_size) {
					if (ImageInfo-&gt;FileSize &lt; ifd_size || dir_offset &gt; ImageInfo-&gt;FileSize - ifd_size) {
						exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Error in TIFF: filesize(x%04X) less than size of IFD(x%04X + x%04X)&quot;, ImageInfo-&gt;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, &quot;Read from TIFF: filesize(x%04X), IFD(x%04X + x%04X)&quot;, ImageInfo-&gt;FileSize, dir_offset, ifd_size);
#endif
					exif_read_from_stream_file_looped(ImageInfo-&gt;infile, (char*)(ImageInfo-&gt;file.list[sn].data+dir_size), ifd_size-dir_size);
#ifdef EXIF_DEBUG
					exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Read from TIFF, done&quot;);
#endif
				}
				/* now process the tags */
				for(i=0;i&lt;num_entries;i++) {
					dir_entry 	 = ImageInfo-&gt;file.list[sn].data+2+i*12;
					entry_tag    = php_ifd_get16u(dir_entry+0, ImageInfo-&gt;motorola_intel);
					entry_type   = php_ifd_get16u(dir_entry+2, ImageInfo-&gt;motorola_intel);
					/*entry_length = php_ifd_get32u(dir_entry+4, ImageInfo-&gt;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-&gt;sections_found |= FOUND_EXIF;
								sub_section_index = SECTION_EXIF;
								break;
							case TAG_GPS_IFD_POINTER:
								ImageInfo-&gt;sections_found |= FOUND_GPS;
								sub_section_index = SECTION_GPS;
								break;
							case TAG_INTEROP_IFD_POINTER:
								ImageInfo-&gt;sections_found |= FOUND_INTEROP;
								sub_section_index = SECTION_INTEROP;
								break;
							case TAG_SUB_IFD:
								ImageInfo-&gt;sections_found |= FOUND_THUMBNAIL;
								sub_section_index = SECTION_THUMBNAIL;
								break;
						}
						entry_offset = php_ifd_get32u(dir_entry+8, ImageInfo-&gt;motorola_intel);
#ifdef EXIF_DEBUG
						exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Next IFD: %s @0x%04X&quot;, exif_get_sectionname(sub_section_index), entry_offset);
#endif
						exif_process_IFD_in_TIFF(ImageInfo, entry_offset, sub_section_index);
						if (section_index!=SECTION_THUMBNAIL &amp;&amp; entry_tag==TAG_SUB_IFD) {
							if (ImageInfo-&gt;Thumbnail.filetype != IMAGE_FILETYPE_UNKNOWN
							&amp;&amp;  ImageInfo-&gt;Thumbnail.size
							&amp;&amp;  ImageInfo-&gt;Thumbnail.offset
							&amp;&amp;  ImageInfo-&gt;read_thumbnail
							) {
#ifdef EXIF_DEBUG
								exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;%s THUMBNAIL @0x%04X + 0x%04X&quot;, ImageInfo-&gt;Thumbnail.data ? &quot;Ignore&quot; : &quot;Read&quot;, ImageInfo-&gt;Thumbnail.offset, ImageInfo-&gt;Thumbnail.size);
#endif
								if (!ImageInfo-&gt;Thumbnail.data) {
									ImageInfo-&gt;Thumbnail.data = safe_emalloc(ImageInfo-&gt;Thumbnail.size, 1, 0);
									php_stream_seek(ImageInfo-&gt;infile, ImageInfo-&gt;Thumbnail.offset, SEEK_SET);
									fgot = exif_read_from_stream_file_looped(ImageInfo-&gt;infile, ImageInfo-&gt;Thumbnail.data, ImageInfo-&gt;Thumbnail.size);
									if (fgot != ImageInfo-&gt;Thumbnail.size) {
										EXIF_ERRLOG_THUMBEOF(ImageInfo)
										efree(ImageInfo-&gt;Thumbnail.data);

										ImageInfo-&gt;Thumbnail.data = NULL;
									} else {
										exif_thumbnail_build(ImageInfo);
									}
								}
							}
						}
#ifdef EXIF_DEBUG
						exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Next IFD: %s done&quot;, exif_get_sectionname(sub_section_index));
#endif
					} else {
						exif_offset_info info;
						exif_offset_info_init(&amp;info,
							(char *) (ImageInfo-&gt;file.list[sn].data - dir_offset),
							(char *) ImageInfo-&gt;file.list[sn].data, ifd_size);
						if (!exif_process_IFD_TAG(ImageInfo, (char*)dir_entry, &amp;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 &amp;&amp; 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, &quot;Read next IFD (THUMBNAIL) at x%04X&quot;, next_offset);
#endif
					exif_process_IFD_in_TIFF(ImageInfo, next_offset, SECTION_THUMBNAIL);
#ifdef EXIF_DEBUG
					exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;%s THUMBNAIL @0x%04X + 0x%04X&quot;, ImageInfo-&gt;Thumbnail.data ? &quot;Ignore&quot; : &quot;Read&quot;, ImageInfo-&gt;Thumbnail.offset, ImageInfo-&gt;Thumbnail.size);
#endif
					if (!ImageInfo-&gt;Thumbnail.data &amp;&amp; ImageInfo-&gt;Thumbnail.offset &amp;&amp; ImageInfo-&gt;Thumbnail.size &amp;&amp; ImageInfo-&gt;read_thumbnail) {
						ImageInfo-&gt;Thumbnail.data = safe_emalloc(ImageInfo-&gt;Thumbnail.size, 1, 0);
						php_stream_seek(ImageInfo-&gt;infile, ImageInfo-&gt;Thumbnail.offset, SEEK_SET);
						fgot = exif_read_from_stream_file_looped(ImageInfo-&gt;infile, ImageInfo-&gt;Thumbnail.data, ImageInfo-&gt;Thumbnail.size);
						if (fgot != ImageInfo-&gt;Thumbnail.size) {
							EXIF_ERRLOG_THUMBEOF(ImageInfo)
							efree(ImageInfo-&gt;Thumbnail.data);
							ImageInfo-&gt;Thumbnail.data = NULL;
						} else {
							exif_thumbnail_build(ImageInfo);
						}
					}
#ifdef EXIF_DEBUG
					exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;Read next IFD (THUMBNAIL) done&quot;);
#endif
				}
				return true;
			} else {
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Error in TIFF: filesize(x%04X) less than size of IFD(x%04X)&quot;, ImageInfo-&gt;FileSize, dir_offset+ImageInfo-&gt;file.list[sn].size);
				return false;
			}
		} else {
			exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Error in TIFF: filesize(x%04X) less than size of IFD dir(x%04X)&quot;, ImageInfo-&gt;FileSize, dir_offset+dir_size);
			return false;
		}
	} else {
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Error in TIFF: filesize(x%04X) less than start of IFD dir(x%04X)&quot;, ImageInfo-&gt;FileSize, dir_offset+2);
		return false;
	}
}
/* }}} */

static bool exif_process_IFD_in_TIFF(image_info_type *ImageInfo, size_t dir_offset, int section_index)
{
	bool result;
	if (ImageInfo-&gt;ifd_count++ &gt; MAX_IFD_TAGS) {
		return false;
	}
	if (ImageInfo-&gt;ifd_nesting_level &gt; MAX_IFD_NESTING_LEVEL) {
		return false;
	}
	ImageInfo-&gt;ifd_nesting_level++;
	result = exif_process_IFD_in_TIFF_impl(ImageInfo, dir_offset, section_index);
	ImageInfo-&gt;ifd_nesting_level--;
	return result;
}

/* {{{ 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-&gt;FileType = IMAGE_FILETYPE_UNKNOWN;

	if (ImageInfo-&gt;FileSize &gt;= 2) {
		php_stream_seek(ImageInfo-&gt;infile, 0, SEEK_SET);
		if (exif_read_from_stream_file_looped(ImageInfo-&gt;infile, (char*)file_header, 2) != 2) {
			return false;
		}
		if ((file_header[0]==0xff) &amp;&amp; (file_header[1]==M_SOI)) {
			ImageInfo-&gt;FileType = IMAGE_FILETYPE_JPEG;
			if (exif_scan_JPEG_header(ImageInfo)) {
				ret = true;
			} else {
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Invalid JPEG file&quot;);
			}
		} else if (ImageInfo-&gt;FileSize &gt;= 8) {
			if (exif_read_from_stream_file_looped(ImageInfo-&gt;infile, (char*)(file_header+2), 6) != 6) {
				return false;
			}
			if (!memcmp(file_header, &quot;II\x2A\x00&quot;, 4)) {
				ImageInfo-&gt;FileType = IMAGE_FILETYPE_TIFF_II;
				ImageInfo-&gt;motorola_intel = 0;
#ifdef EXIF_DEBUG
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;File has TIFF/II format&quot;);
#endif
				ImageInfo-&gt;sections_found |= FOUND_IFD0;
				if (exif_process_IFD_in_TIFF(ImageInfo,
											 php_ifd_get32u(file_header + 4, ImageInfo-&gt;motorola_intel),
											 SECTION_IFD0)) {
					ret = true;
				} else {
					exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Invalid TIFF file&quot;);
				}
			} else if (!memcmp(file_header, &quot;MM\x00\x2a&quot;, 4)) {
				ImageInfo-&gt;FileType = IMAGE_FILETYPE_TIFF_MM;
				ImageInfo-&gt;motorola_intel = 1;
#ifdef EXIF_DEBUG
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, &quot;File has TIFF/MM format&quot;);
#endif
				ImageInfo-&gt;sections_found |= FOUND_IFD0;
				if (exif_process_IFD_in_TIFF(ImageInfo,
											 php_ifd_get32u(file_header + 4, ImageInfo-&gt;motorola_intel),
											 SECTION_IFD0)) {
					ret = true;
				} else {
					exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Invalid TIFF file&quot;);
				}
			} else {
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;File not supported&quot;);
				return false;
			}
		}
	} else {
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;File too small (%d)&quot;, ImageInfo-&gt;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-&gt;FileName);
	EFREE_IF(ImageInfo-&gt;UserComment);
	EFREE_IF(ImageInfo-&gt;UserCommentEncoding);
	EFREE_IF(ImageInfo-&gt;Copyright);
	EFREE_IF(ImageInfo-&gt;CopyrightPhotographer);
	EFREE_IF(ImageInfo-&gt;CopyrightEditor);
	EFREE_IF(ImageInfo-&gt;Thumbnail.data);
	EFREE_IF(ImageInfo-&gt;encode_unicode);
	EFREE_IF(ImageInfo-&gt;decode_unicode_be);
	EFREE_IF(ImageInfo-&gt;decode_unicode_le);
	EFREE_IF(ImageInfo-&gt;encode_jis);
	EFREE_IF(ImageInfo-&gt;decode_jis_be);
	EFREE_IF(ImageInfo-&gt;decode_jis_le);
	EFREE_IF(ImageInfo-&gt;make);
	EFREE_IF(ImageInfo-&gt;model);
	for (i=0; i&lt;ImageInfo-&gt;xp_fields.count; i++) {
		EFREE_IF(ImageInfo-&gt;xp_fields.list[i].value);
	}
	EFREE_IF(ImageInfo-&gt;xp_fields.list);
	for (i=0; i&lt;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 = {0};

	/* Start with an empty image information structure. */
	memset(ImageInfo, 0, sizeof(*ImageInfo));

	ImageInfo-&gt;motorola_intel	= -1; /* flag as unknown */
	ImageInfo-&gt;infile			= stream;
	ImageInfo-&gt;FileName			= NULL;

	if (php_stream_is(ImageInfo-&gt;infile, PHP_STREAM_IS_STDIO)) {
		if (stream-&gt;orig_path &amp;&amp; VCWD_STAT(stream-&gt;orig_path, &amp;st) &gt;= 0) {
			zend_string *base;
			if ((st.st_mode &amp; S_IFMT) != S_IFREG) {
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Not a file&quot;);
				ImageInfo-&gt;infile = NULL;
				return false;
			}

			/* Store file name */
			base = php_basename(stream-&gt;orig_path, strlen(stream-&gt;orig_path), NULL, 0);
			ImageInfo-&gt;FileName = estrndup(ZSTR_VAL(base), ZSTR_LEN(base));

			zend_string_release_ex(base, 0);

			/* Store file date/time. */
			ImageInfo-&gt;FileDateTime = st.st_mtime;
			ImageInfo-&gt;FileSize = st.st_size;
		}
	} else {
		if (!ImageInfo-&gt;FileSize) {
			php_stream_seek(ImageInfo-&gt;infile, 0, SEEK_END);
			ImageInfo-&gt;FileSize = php_stream_tell(ImageInfo-&gt;infile);
			php_stream_seek(ImageInfo-&gt;infile, 0, SEEK_SET);
		}
	}

	ImageInfo-&gt;read_thumbnail		= read_thumbnail;
	ImageInfo-&gt;read_all				= read_all;
	ImageInfo-&gt;Thumbnail.filetype	= IMAGE_FILETYPE_UNKNOWN;

	ImageInfo-&gt;encode_unicode		= estrdup(EXIF_G(encode_unicode));
	ImageInfo-&gt;decode_unicode_be	= estrdup(EXIF_G(decode_unicode_be));
	ImageInfo-&gt;decode_unicode_le	= estrdup(EXIF_G(decode_unicode_le));
	ImageInfo-&gt;encode_jis			= estrdup(EXIF_G(encode_jis));
	ImageInfo-&gt;decode_jis_be	 	= estrdup(EXIF_G(decode_jis_be));
	ImageInfo-&gt;decode_jis_le		= estrdup(EXIF_G(decode_jis_le));


	ImageInfo-&gt;ifd_nesting_level = 0;
	ImageInfo-&gt;ifd_count = 0;
	ImageInfo-&gt;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, &quot;rb&quot;, STREAM_MUST_SEEK | IGNORE_PATH, NULL);

	if (!stream) {
		memset(&amp;ImageInfo, 0, sizeof(ImageInfo));

		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, &quot;Unable to open file&quot;);

		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;
	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_OR_NULL(z_sections_needed)
		Z_PARAM_BOOL(sub_arrays)
		Z_PARAM_BOOL(read_thumbnail)
	ZEND_PARSE_PARAMETERS_END();

	memset(&amp;ImageInfo, 0, sizeof(ImageInfo));

	if (z_sections_needed) {
		spprintf(&amp;sections_str, 0, &quot;,%s,&quot;, ZSTR_VAL(z_sections_needed));
		/* sections_str DOES start with , and SPACES are NOT allowed in names */
		s = sections_str;
		while (*++s) {
			if (*s == &#039; &#039;) {
				*s = &#039;,&#039;;
			}
		}

		for (i = 0; i &lt; SECTION_COUNT; i++) {
			snprintf(tmp, sizeof(tmp), &quot;,%s,&quot;, exif_get_sectionname(i));
			if (strstr(sections_str, tmp)) {
				sections_needed |= 1&lt;&lt;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, &amp;ImageInfo, E_NOTICE, &quot;Sections needed: %s&quot;, sections_str[0] ? sections_str : &quot;None&quot;);
		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(&amp;ImageInfo, p_stream, read_thumbnail, read_all);
	} else {
		if (!try_convert_to_string(stream)) {
			RETURN_THROWS();
		}

		if (!Z_STRLEN_P(stream)) {
			zend_argument_must_not_be_empty_error(1);
			RETURN_THROWS();
		}

		if (CHECK_NULL_PATH(Z_STRVAL_P(stream), Z_STRLEN_P(stream))) {
			zend_argument_value_error(1, &quot;must not contain any null bytes&quot;);
			RETURN_THROWS();
		}

		ret = exif_read_from_file(&amp;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, &amp;ImageInfo, E_NOTICE, &quot;Sections found: %s&quot;, sections_str[0] ? sections_str : &quot;None&quot;);
	}
#endif

	ImageInfo.sections_found |= FOUND_COMPUTED|FOUND_FILE;/* do not inform about in debug*/

	if (ret == false || (sections_needed &amp;&amp; !(sections_needed&amp;ImageInfo.sections_found))) {
		/* array_init must be checked at last! otherwise the array must be freed if a later test fails. */
		exif_discard_imageinfo(&amp;ImageInfo);
	   	EFREE_IF(sections_str);
		RETURN_FALSE;
	}

	array_init(return_value);

#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, &amp;ImageInfo, E_NOTICE, &quot;Generate section FILE&quot;);
#endif

	/* now we can add our information */
	exif_iif_add_str(&amp;ImageInfo, SECTION_FILE, &quot;FileName&quot;,      ImageInfo.FileName);
	exif_iif_add_int(&amp;ImageInfo, SECTION_FILE, &quot;FileDateTime&quot;,  ImageInfo.FileDateTime);
	exif_iif_add_int(&amp;ImageInfo, SECTION_FILE, &quot;FileSize&quot;,      ImageInfo.FileSize);
	exif_iif_add_int(&amp;ImageInfo, SECTION_FILE, &quot;FileType&quot;,      ImageInfo.FileType);
	exif_iif_add_str(&amp;ImageInfo, SECTION_FILE, &quot;MimeType&quot;,      (char*)php_image_type_to_mime_type(ImageInfo.FileType));
	exif_iif_add_str(&amp;ImageInfo, SECTION_FILE, &quot;SectionsFound&quot;, sections_str ? sections_str : &quot;NONE&quot;);

#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, &amp;ImageInfo, E_NOTICE, &quot;Generate section COMPUTED&quot;);
#endif

	if (ImageInfo.Width&gt;0 &amp;&amp;  ImageInfo.Height&gt;0) {
		exif_iif_add_fmt(&amp;ImageInfo, SECTION_COMPUTED, &quot;html&quot;   , &quot;width=\&quot;%d\&quot; height=\&quot;%d\&quot;&quot;, ImageInfo.Width, ImageInfo.Height);
		exif_iif_add_int(&amp;ImageInfo, SECTION_COMPUTED, &quot;Height&quot;, ImageInfo.Height);
		exif_iif_add_int(&amp;ImageInfo, SECTION_COMPUTED, &quot;Width&quot;,  ImageInfo.Width);
	}
	exif_iif_add_int(&amp;ImageInfo, SECTION_COMPUTED, &quot;IsColor&quot;, ImageInfo.IsColor);
	if (ImageInfo.motorola_intel != -1) {
		exif_iif_add_int(&amp;ImageInfo, SECTION_COMPUTED, &quot;ByteOrderMotorola&quot;, ImageInfo.motorola_intel);
	}
	if (ImageInfo.FocalLength) {
		exif_iif_add_fmt(&amp;ImageInfo, SECTION_COMPUTED, &quot;FocalLength&quot;, &quot;%4.1Fmm&quot;, ImageInfo.FocalLength);
		if(ImageInfo.CCDWidth) {
			exif_iif_add_fmt(&amp;ImageInfo, SECTION_COMPUTED, &quot;35mmFocalLength&quot;, &quot;%dmm&quot;, (int)(ImageInfo.FocalLength/ImageInfo.CCDWidth*35+0.5));
		}
	}
	if(ImageInfo.CCDWidth) {
		exif_iif_add_fmt(&amp;ImageInfo, SECTION_COMPUTED, &quot;CCDWidth&quot;, &quot;%dmm&quot;, (int)ImageInfo.CCDWidth);
	}
	if(ImageInfo.ExposureTime&gt;0) {
		float recip_exposure_time = 0.5f + 1.0f/ImageInfo.ExposureTime;
		if (ImageInfo.ExposureTime &lt;= 0.5 &amp;&amp; recip_exposure_time &lt; (float)INT_MAX) {
			exif_iif_add_fmt(&amp;ImageInfo, SECTION_COMPUTED, &quot;ExposureTime&quot;, &quot;%0.3F s (1/%d)&quot;, ImageInfo.ExposureTime, (int) recip_exposure_time);
		} else {
			exif_iif_add_fmt(&amp;ImageInfo, SECTION_COMPUTED, &quot;ExposureTime&quot;, &quot;%0.3F s&quot;, ImageInfo.ExposureTime);
		}
	}
	if(ImageInfo.ApertureFNumber) {
		exif_iif_add_fmt(&amp;ImageInfo, SECTION_COMPUTED, &quot;ApertureFNumber&quot;, &quot;f/%.1F&quot;, ImageInfo.ApertureFNumber);
	}
	if(ImageInfo.Distance) {
		if(ImageInfo.Distance&lt;0) {
			exif_iif_add_str(&amp;ImageInfo, SECTION_COMPUTED, &quot;FocusDistance&quot;, &quot;Infinite&quot;);
		} else {
			exif_iif_add_fmt(&amp;ImageInfo, SECTION_COMPUTED, &quot;FocusDistance&quot;, &quot;%0.2Fm&quot;, ImageInfo.Distance);
		}
	}
	if (ImageInfo.UserComment) {
		exif_iif_add_buffer(&amp;ImageInfo, SECTION_COMPUTED, &quot;UserComment&quot;, ImageInfo.UserCommentLength, ImageInfo.UserComment);
		if (ImageInfo.UserCommentEncoding &amp;&amp; strlen(ImageInfo.UserCommentEncoding)) {
			exif_iif_add_str(&amp;ImageInfo, SECTION_COMPUTED, &quot;UserCommentEncoding&quot;, ImageInfo.UserCommentEncoding);
		}
	}

	exif_iif_add_str(&amp;ImageInfo, SECTION_COMPUTED, &quot;Copyright&quot;,              ImageInfo.Copyright);
	exif_iif_add_str(&amp;ImageInfo, SECTION_COMPUTED, &quot;Copyright.Photographer&quot;, ImageInfo.CopyrightPhotographer);
	exif_iif_add_str(&amp;ImageInfo, SECTION_COMPUTED, &quot;Copyright.Editor&quot;,       ImageInfo.CopyrightEditor);

	for (i=0; i&lt;ImageInfo.xp_fields.count; i++) {
		exif_iif_add_str(&amp;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(&amp;ImageInfo, SECTION_THUMBNAIL, &quot;THUMBNAIL&quot;, 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(&amp;ImageInfo);
		}
		exif_iif_add_int(&amp;ImageInfo, SECTION_COMPUTED, &quot;Thumbnail.FileType&quot;, ImageInfo.Thumbnail.filetype);
		exif_iif_add_str(&amp;ImageInfo, SECTION_COMPUTED, &quot;Thumbnail.MimeType&quot;, (char*)php_image_type_to_mime_type(ImageInfo.Thumbnail.filetype));
	}
	if (ImageInfo.Thumbnail.width &amp;&amp; ImageInfo.Thumbnail.height) {
		exif_iif_add_int(&amp;ImageInfo, SECTION_COMPUTED, &quot;Thumbnail.Height&quot;, ImageInfo.Thumbnail.height);
		exif_iif_add_int(&amp;ImageInfo, SECTION_COMPUTED, &quot;Thumbnail.Width&quot;,  ImageInfo.Thumbnail.width);
	}
	EFREE_IF(sections_str);

#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, &amp;ImageInfo, E_NOTICE, &quot;Adding image infos&quot;);
#endif

	add_assoc_image_info(return_value, sub_arrays, &amp;ImageInfo, SECTION_FILE      );
	add_assoc_image_info(return_value, 1,          &amp;ImageInfo, SECTION_COMPUTED  );
	add_assoc_image_info(return_value, sub_arrays, &amp;ImageInfo, SECTION_ANY_TAG   );
	add_assoc_image_info(return_value, sub_arrays, &amp;ImageInfo, SECTION_IFD0      );
	add_assoc_image_info(return_value, 1,          &amp;ImageInfo, SECTION_THUMBNAIL );
	add_assoc_image_info(return_value, 1,          &amp;ImageInfo, SECTION_COMMENT   );
	add_assoc_image_info(return_value, sub_arrays, &amp;ImageInfo, SECTION_EXIF      );
	add_assoc_image_info(return_value, sub_arrays, &amp;ImageInfo, SECTION_GPS       );
	add_assoc_image_info(return_value, sub_arrays, &amp;ImageInfo, SECTION_INTEROP   );
	add_assoc_image_info(return_value, sub_arrays, &amp;ImageInfo, SECTION_FPIX      );
	add_assoc_image_info(return_value, sub_arrays, &amp;ImageInfo, SECTION_APP12     );
	add_assoc_image_info(return_value, sub_arrays, &amp;ImageInfo, SECTION_WINXP     );
	add_assoc_image_info(return_value, sub_arrays, &amp;ImageInfo, SECTION_MAKERNOTE );

#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, &amp;ImageInfo, E_NOTICE, &quot;Discarding info&quot;);
#endif

	exif_discard_imageinfo(&amp;ImageInfo);

#ifdef EXIF_DEBUG
	php_error_docref1(NULL, (Z_TYPE_P(stream) == IS_RESOURCE ? &quot;&lt;stream&gt;&quot; : Z_STRVAL_P(stream)), E_NOTICE, &quot;Done&quot;);
#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(&amp;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(&amp;ImageInfo, p_stream, 1, 0);
	} else {
		if (!try_convert_to_string(stream)) {
			RETURN_THROWS();
		}

		if (!Z_STRLEN_P(stream)) {
			zend_argument_must_not_be_empty_error(1);
			RETURN_THROWS();
		}

		if (CHECK_NULL_PATH(Z_STRVAL_P(stream), Z_STRLEN_P(stream))) {
			zend_argument_value_error(1, &quot;must not contain any null bytes&quot;);
			RETURN_THROWS();
		}

		ret = exif_read_from_file(&amp;ImageInfo, Z_STRVAL_P(stream), 1, 0);
	}

	if (ret == false) {
		exif_discard_imageinfo(&amp;ImageInfo);
		RETURN_FALSE;
	}

#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, &amp;ImageInfo, E_NOTICE, &quot;Thumbnail data %d %d %d, %d x %d&quot;, 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(&amp;ImageInfo);
		RETURN_FALSE;
	}

#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, &amp;ImageInfo, E_NOTICE, &quot;Returning thumbnail(%d)&quot;, ImageInfo.Thumbnail.size);
#endif

	ZVAL_STRINGL(return_value, ImageInfo.Thumbnail.data, ImageInfo.Thumbnail.size);
	if (arg_c &gt;= 3) {
		if (!ImageInfo.Thumbnail.width || !ImageInfo.Thumbnail.height) {
			if (!exif_scan_thumbnail(&amp;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 &gt;= 4)	{
		ZEND_TRY_ASSIGN_REF_LONG(z_imagetype, ImageInfo.Thumbnail.filetype);
	}

#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, &amp;ImageInfo, E_NOTICE, &quot;Discarding info&quot;);
#endif

	exif_discard_imageinfo(&amp;ImageInfo);

#ifdef EXIF_DEBUG
	php_error_docref1(NULL, (Z_TYPE_P(stream) == IS_RESOURCE ? &quot;&lt;stream&gt;&quot; : Z_STRVAL_P(stream)), E_NOTICE, &quot;Done&quot;);
#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(), &quot;p&quot;, &amp;imagefile, &amp;imagefile_len) == FAILURE) {
		RETURN_THROWS();
	}

	stream = php_stream_open_wrapper(imagefile, &quot;rb&quot;, 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);
	}
}
/* }}} */
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