1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 7 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2018 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.01 of the PHP license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at the following url: |
10 | http://www.php.net/license/3_01.txt |
11 | If you did not receive a copy of the PHP license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@php.net so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Authors: Rasmus Lerdorf <rasmus@php.net> |
16 | Marcus Boerger <helly@php.net> |
17 +----------------------------------------------------------------------+
18 */
19
20 /* $Id: 819708c2d3359dba9ed7004955b450c6ed83b7ff $ */
21
22 /* ToDos
23 *
24 * See if example images from http://www.exif.org have illegal
25 * thumbnail sizes or if code is corrupt.
26 * Create/Update exif headers.
27 * Create/Remove/Update image thumbnails.
28 */
29
30 /* Security
31 *
32 * At current time i do not see any security problems but a potential
33 * attacker could generate an image with recursive ifd pointers...(Marcus)
34 */
35
36 #ifdef HAVE_CONFIG_H
37 #include "config.h"
38 #endif
39
40 #include "php.h"
41 #include "ext/standard/file.h"
42
43 #if HAVE_EXIF
44
45 /* When EXIF_DEBUG is defined the module generates a lot of debug messages
46 * that help understanding what is going on. This can and should be used
47 * while extending the module as it shows if you are at the right position.
48 * You are always considered to have a copy of TIFF6.0 and EXIF2.10 standard.
49 */
50 #undef EXIF_DEBUG
51
52 #ifdef EXIF_DEBUG
53 #define EXIFERR_DC , const char *_file, size_t _line
54 #define EXIFERR_CC , __FILE__, __LINE__
55 #else
56 #define EXIFERR_DC
57 #define EXIFERR_CC
58 #endif
59
60 #undef EXIF_JPEG2000
61
62 #include "php_exif.h"
63 #include <math.h>
64 #include "php_ini.h"
65 #include "ext/standard/php_string.h"
66 #include "ext/standard/php_image.h"
67 #include "ext/standard/info.h"
68
69 /* needed for ssize_t definition */
70 #include <sys/types.h>
71
72 typedef unsigned char uchar;
73
74 #ifndef safe_emalloc
75 # define safe_emalloc(a,b,c) emalloc((a)*(b)+(c))
76 #endif
77 #ifndef safe_erealloc
78 # define safe_erealloc(p,a,b,c) erealloc(p, (a)*(b)+(c))
79 #endif
80
81 #ifndef TRUE
82 # define TRUE 1
83 # define FALSE 0
84 #endif
85
86 #ifndef max
87 # define max(a,b) ((a)>(b) ? (a) : (b))
88 #endif
89
90 #define EFREE_IF(ptr) if (ptr) efree(ptr)
91
92 #define MAX_IFD_NESTING_LEVEL 150
93
94 /* {{{ arginfo */
95 ZEND_BEGIN_ARG_INFO(arginfo_exif_tagname, 0)
96 ZEND_ARG_INFO(0, index)
97 ZEND_END_ARG_INFO()
98
99 ZEND_BEGIN_ARG_INFO_EX(arginfo_exif_read_data, 0, 0, 1)
100 ZEND_ARG_INFO(0, filename)
101 ZEND_ARG_INFO(0, sections_needed)
102 ZEND_ARG_INFO(0, sub_arrays)
103 ZEND_ARG_INFO(0, read_thumbnail)
104 ZEND_END_ARG_INFO()
105
106 ZEND_BEGIN_ARG_INFO_EX(arginfo_exif_thumbnail, 0, 0, 1)
107 ZEND_ARG_INFO(0, filename)
108 ZEND_ARG_INFO(1, width)
109 ZEND_ARG_INFO(1, height)
110 ZEND_ARG_INFO(1, imagetype)
111 ZEND_END_ARG_INFO()
112
113 ZEND_BEGIN_ARG_INFO(arginfo_exif_imagetype, 0)
114 ZEND_ARG_INFO(0, imagefile)
115 ZEND_END_ARG_INFO()
116
117 /* }}} */
118
119 /* {{{ exif_functions[]
120 */
121 const zend_function_entry exif_functions[] = {
122 PHP_FE(exif_read_data, arginfo_exif_read_data)
123 PHP_DEP_FALIAS(read_exif_data, exif_read_data, arginfo_exif_read_data)
124 PHP_FE(exif_tagname, arginfo_exif_tagname)
125 PHP_FE(exif_thumbnail, arginfo_exif_thumbnail)
126 PHP_FE(exif_imagetype, arginfo_exif_imagetype)
127 PHP_FE_END
128 };
129 /* }}} */
130
131 /* {{{ PHP_MINFO_FUNCTION
132 */
PHP_MINFO_FUNCTION(exif)133 PHP_MINFO_FUNCTION(exif)
134 {
135 php_info_print_table_start();
136 php_info_print_table_row(2, "EXIF Support", "enabled");
137 php_info_print_table_row(2, "EXIF Version", PHP_EXIF_VERSION);
138 php_info_print_table_row(2, "Supported EXIF Version", "0220");
139 php_info_print_table_row(2, "Supported filetypes", "JPEG, TIFF");
140
141 if (zend_hash_str_exists(&module_registry, "mbstring", sizeof("mbstring")-1)) {
142 php_info_print_table_row(2, "Multibyte decoding support using mbstring", "enabled");
143 } else {
144 php_info_print_table_row(2, "Multibyte decoding support using mbstring", "disabled");
145 }
146
147 php_info_print_table_row(2, "Extended EXIF tag formats", "Canon, Casio, Fujifilm, Nikon, Olympus, Samsung, Panasonic, DJI, Sony, Pentax, Minolta, Sigma, Foveon, Kyocera, Ricoh, AGFA, Epson");
148 php_info_print_table_end();
149
150 DISPLAY_INI_ENTRIES();
151 }
152 /* }}} */
153
154 ZEND_BEGIN_MODULE_GLOBALS(exif)
155 char * encode_unicode;
156 char * decode_unicode_be;
157 char * decode_unicode_le;
158 char * encode_jis;
159 char * decode_jis_be;
160 char * decode_jis_le;
161 ZEND_END_MODULE_GLOBALS(exif)
162
ZEND_DECLARE_MODULE_GLOBALS(exif)163 ZEND_DECLARE_MODULE_GLOBALS(exif)
164 #define EXIF_G(v) ZEND_MODULE_GLOBALS_ACCESSOR(exif, v)
165
166 #if defined(ZTS) && defined(COMPILE_DL_EXIF)
167 ZEND_TSRMLS_CACHE_DEFINE()
168 #endif
169
170 /* {{{ PHP_INI
171 */
172
173 ZEND_INI_MH(OnUpdateEncode)
174 {
175 if (new_value && ZSTR_LEN(new_value)) {
176 const zend_encoding **return_list;
177 size_t return_size;
178 if (FAILURE == zend_multibyte_parse_encoding_list(ZSTR_VAL(new_value), ZSTR_LEN(new_value),
179 &return_list, &return_size, 0)) {
180 php_error_docref(NULL, E_WARNING, "Illegal encoding ignored: '%s'", ZSTR_VAL(new_value));
181 return FAILURE;
182 }
183 pefree((void *) return_list, 0);
184 }
185 return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
186 }
187
ZEND_INI_MH(OnUpdateDecode)188 ZEND_INI_MH(OnUpdateDecode)
189 {
190 if (new_value) {
191 const zend_encoding **return_list;
192 size_t return_size;
193 if (FAILURE == zend_multibyte_parse_encoding_list(ZSTR_VAL(new_value), ZSTR_LEN(new_value),
194 &return_list, &return_size, 0)) {
195 php_error_docref(NULL, E_WARNING, "Illegal encoding ignored: '%s'", ZSTR_VAL(new_value));
196 return FAILURE;
197 }
198 pefree((void *) return_list, 0);
199 }
200 return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
201 }
202
203 PHP_INI_BEGIN()
204 STD_PHP_INI_ENTRY("exif.encode_unicode", "ISO-8859-15", PHP_INI_ALL, OnUpdateEncode, encode_unicode, zend_exif_globals, exif_globals)
205 STD_PHP_INI_ENTRY("exif.decode_unicode_motorola", "UCS-2BE", PHP_INI_ALL, OnUpdateDecode, decode_unicode_be, zend_exif_globals, exif_globals)
206 STD_PHP_INI_ENTRY("exif.decode_unicode_intel", "UCS-2LE", PHP_INI_ALL, OnUpdateDecode, decode_unicode_le, zend_exif_globals, exif_globals)
207 STD_PHP_INI_ENTRY("exif.encode_jis", "", PHP_INI_ALL, OnUpdateEncode, encode_jis, zend_exif_globals, exif_globals)
208 STD_PHP_INI_ENTRY("exif.decode_jis_motorola", "JIS", PHP_INI_ALL, OnUpdateDecode, decode_jis_be, zend_exif_globals, exif_globals)
209 STD_PHP_INI_ENTRY("exif.decode_jis_intel", "JIS", PHP_INI_ALL, OnUpdateDecode, decode_jis_le, zend_exif_globals, exif_globals)
PHP_INI_END()210 PHP_INI_END()
211 /* }}} */
212
213 /* {{{ PHP_GINIT_FUNCTION
214 */
215 static PHP_GINIT_FUNCTION(exif)
216 {
217 #if defined(COMPILE_DL_EXIF) && defined(ZTS)
218 ZEND_TSRMLS_CACHE_UPDATE();
219 #endif
220 exif_globals->encode_unicode = NULL;
221 exif_globals->decode_unicode_be = NULL;
222 exif_globals->decode_unicode_le = NULL;
223 exif_globals->encode_jis = NULL;
224 exif_globals->decode_jis_be = NULL;
225 exif_globals->decode_jis_le = NULL;
226 }
227 /* }}} */
228
229 /* {{{ PHP_MINIT_FUNCTION(exif)
230 */
PHP_MINIT_FUNCTION(exif)231 PHP_MINIT_FUNCTION(exif)
232 {
233 REGISTER_INI_ENTRIES();
234 if (zend_hash_str_exists(&module_registry, "mbstring", sizeof("mbstring")-1)) {
235 REGISTER_LONG_CONSTANT("EXIF_USE_MBSTRING", 1, CONST_CS | CONST_PERSISTENT);
236 } else {
237 REGISTER_LONG_CONSTANT("EXIF_USE_MBSTRING", 0, CONST_CS | CONST_PERSISTENT);
238 }
239 return SUCCESS;
240 }
241 /* }}} */
242
243 /* {{{ PHP_MSHUTDOWN_FUNCTION
244 */
PHP_MSHUTDOWN_FUNCTION(exif)245 PHP_MSHUTDOWN_FUNCTION(exif)
246 {
247 UNREGISTER_INI_ENTRIES();
248 return SUCCESS;
249 }
250 /* }}} */
251
252 /* {{{ exif dependencies */
253 static const zend_module_dep exif_module_deps[] = {
254 ZEND_MOD_REQUIRED("standard")
255 ZEND_MOD_OPTIONAL("mbstring")
256 ZEND_MOD_END
257 };
258 /* }}} */
259
260 /* {{{ exif_module_entry
261 */
262 zend_module_entry exif_module_entry = {
263 STANDARD_MODULE_HEADER_EX, NULL,
264 exif_module_deps,
265 "exif",
266 exif_functions,
267 PHP_MINIT(exif),
268 PHP_MSHUTDOWN(exif),
269 NULL, NULL,
270 PHP_MINFO(exif),
271 PHP_EXIF_VERSION,
272 PHP_MODULE_GLOBALS(exif),
273 PHP_GINIT(exif),
274 NULL,
275 NULL,
276 STANDARD_MODULE_PROPERTIES_EX
277 };
278 /* }}} */
279
280 #ifdef COMPILE_DL_EXIF
ZEND_GET_MODULE(exif)281 ZEND_GET_MODULE(exif)
282 #endif
283
284 /* {{{ php_strnlen
285 * get length of string if buffer if less than buffer size or buffer size */
286 static size_t php_strnlen(char* str, size_t maxlen) {
287 size_t len = 0;
288
289 if (str && maxlen && *str) {
290 do {
291 len++;
292 } while (--maxlen && *(++str));
293 }
294 return len;
295 }
296 /* }}} */
297
298 /* {{{ error messages
299 */
300 static const char * EXIF_ERROR_FILEEOF = "Unexpected end of file reached";
301 static const char * EXIF_ERROR_CORRUPT = "File structure corrupted";
302 static const char * EXIF_ERROR_THUMBEOF = "Thumbnail goes IFD boundary or end of file reached";
303 static const char * EXIF_ERROR_FSREALLOC = "Illegal reallocating of undefined file section";
304
305 #define EXIF_ERRLOG_FILEEOF(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_FILEEOF);
306 #define EXIF_ERRLOG_CORRUPT(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_CORRUPT);
307 #define EXIF_ERRLOG_THUMBEOF(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_THUMBEOF);
308 #define EXIF_ERRLOG_FSREALLOC(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_FSREALLOC);
309 /* }}} */
310
311 /* {{{ format description defines
312 Describes format descriptor
313 */
314 static int php_tiff_bytes_per_format[] = {0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8, 1};
315 #define NUM_FORMATS 13
316
317 #define TAG_FMT_BYTE 1
318 #define TAG_FMT_STRING 2
319 #define TAG_FMT_USHORT 3
320 #define TAG_FMT_ULONG 4
321 #define TAG_FMT_URATIONAL 5
322 #define TAG_FMT_SBYTE 6
323 #define TAG_FMT_UNDEFINED 7
324 #define TAG_FMT_SSHORT 8
325 #define TAG_FMT_SLONG 9
326 #define TAG_FMT_SRATIONAL 10
327 #define TAG_FMT_SINGLE 11
328 #define TAG_FMT_DOUBLE 12
329 #define TAG_FMT_IFD 13
330
331 #ifdef EXIF_DEBUG
exif_get_tagformat(int format)332 static char *exif_get_tagformat(int format)
333 {
334 switch(format) {
335 case TAG_FMT_BYTE: return "BYTE";
336 case TAG_FMT_STRING: return "STRING";
337 case TAG_FMT_USHORT: return "USHORT";
338 case TAG_FMT_ULONG: return "ULONG";
339 case TAG_FMT_URATIONAL: return "URATIONAL";
340 case TAG_FMT_SBYTE: return "SBYTE";
341 case TAG_FMT_UNDEFINED: return "UNDEFINED";
342 case TAG_FMT_SSHORT: return "SSHORT";
343 case TAG_FMT_SLONG: return "SLONG";
344 case TAG_FMT_SRATIONAL: return "SRATIONAL";
345 case TAG_FMT_SINGLE: return "SINGLE";
346 case TAG_FMT_DOUBLE: return "DOUBLE";
347 case TAG_FMT_IFD: return "IFD";
348 }
349 return "*Illegal";
350 }
351 #endif
352
353 /* Describes tag values */
354 #define TAG_GPS_VERSION_ID 0x0000
355 #define TAG_GPS_LATITUDE_REF 0x0001
356 #define TAG_GPS_LATITUDE 0x0002
357 #define TAG_GPS_LONGITUDE_REF 0x0003
358 #define TAG_GPS_LONGITUDE 0x0004
359 #define TAG_GPS_ALTITUDE_REF 0x0005
360 #define TAG_GPS_ALTITUDE 0x0006
361 #define TAG_GPS_TIME_STAMP 0x0007
362 #define TAG_GPS_SATELLITES 0x0008
363 #define TAG_GPS_STATUS 0x0009
364 #define TAG_GPS_MEASURE_MODE 0x000A
365 #define TAG_GPS_DOP 0x000B
366 #define TAG_GPS_SPEED_REF 0x000C
367 #define TAG_GPS_SPEED 0x000D
368 #define TAG_GPS_TRACK_REF 0x000E
369 #define TAG_GPS_TRACK 0x000F
370 #define TAG_GPS_IMG_DIRECTION_REF 0x0010
371 #define TAG_GPS_IMG_DIRECTION 0x0011
372 #define TAG_GPS_MAP_DATUM 0x0012
373 #define TAG_GPS_DEST_LATITUDE_REF 0x0013
374 #define TAG_GPS_DEST_LATITUDE 0x0014
375 #define TAG_GPS_DEST_LONGITUDE_REF 0x0015
376 #define TAG_GPS_DEST_LONGITUDE 0x0016
377 #define TAG_GPS_DEST_BEARING_REF 0x0017
378 #define TAG_GPS_DEST_BEARING 0x0018
379 #define TAG_GPS_DEST_DISTANCE_REF 0x0019
380 #define TAG_GPS_DEST_DISTANCE 0x001A
381 #define TAG_GPS_PROCESSING_METHOD 0x001B
382 #define TAG_GPS_AREA_INFORMATION 0x001C
383 #define TAG_GPS_DATE_STAMP 0x001D
384 #define TAG_GPS_DIFFERENTIAL 0x001E
385 #define TAG_TIFF_COMMENT 0x00FE /* SHOUDLNT HAPPEN */
386 #define TAG_NEW_SUBFILE 0x00FE /* New version of subfile tag */
387 #define TAG_SUBFILE_TYPE 0x00FF /* Old version of subfile tag */
388 #define TAG_IMAGEWIDTH 0x0100
389 #define TAG_IMAGEHEIGHT 0x0101
390 #define TAG_BITS_PER_SAMPLE 0x0102
391 #define TAG_COMPRESSION 0x0103
392 #define TAG_PHOTOMETRIC_INTERPRETATION 0x0106
393 #define TAG_TRESHHOLDING 0x0107
394 #define TAG_CELL_WIDTH 0x0108
395 #define TAG_CELL_HEIGHT 0x0109
396 #define TAG_FILL_ORDER 0x010A
397 #define TAG_DOCUMENT_NAME 0x010D
398 #define TAG_IMAGE_DESCRIPTION 0x010E
399 #define TAG_MAKE 0x010F
400 #define TAG_MODEL 0x0110
401 #define TAG_STRIP_OFFSETS 0x0111
402 #define TAG_ORIENTATION 0x0112
403 #define TAG_SAMPLES_PER_PIXEL 0x0115
404 #define TAG_ROWS_PER_STRIP 0x0116
405 #define TAG_STRIP_BYTE_COUNTS 0x0117
406 #define TAG_MIN_SAMPPLE_VALUE 0x0118
407 #define TAG_MAX_SAMPLE_VALUE 0x0119
408 #define TAG_X_RESOLUTION 0x011A
409 #define TAG_Y_RESOLUTION 0x011B
410 #define TAG_PLANAR_CONFIGURATION 0x011C
411 #define TAG_PAGE_NAME 0x011D
412 #define TAG_X_POSITION 0x011E
413 #define TAG_Y_POSITION 0x011F
414 #define TAG_FREE_OFFSETS 0x0120
415 #define TAG_FREE_BYTE_COUNTS 0x0121
416 #define TAG_GRAY_RESPONSE_UNIT 0x0122
417 #define TAG_GRAY_RESPONSE_CURVE 0x0123
418 #define TAG_RESOLUTION_UNIT 0x0128
419 #define TAG_PAGE_NUMBER 0x0129
420 #define TAG_TRANSFER_FUNCTION 0x012D
421 #define TAG_SOFTWARE 0x0131
422 #define TAG_DATETIME 0x0132
423 #define TAG_ARTIST 0x013B
424 #define TAG_HOST_COMPUTER 0x013C
425 #define TAG_PREDICTOR 0x013D
426 #define TAG_WHITE_POINT 0x013E
427 #define TAG_PRIMARY_CHROMATICITIES 0x013F
428 #define TAG_COLOR_MAP 0x0140
429 #define TAG_HALFTONE_HINTS 0x0141
430 #define TAG_TILE_WIDTH 0x0142
431 #define TAG_TILE_LENGTH 0x0143
432 #define TAG_TILE_OFFSETS 0x0144
433 #define TAG_TILE_BYTE_COUNTS 0x0145
434 #define TAG_SUB_IFD 0x014A
435 #define TAG_INK_SETMPUTER 0x014C
436 #define TAG_INK_NAMES 0x014D
437 #define TAG_NUMBER_OF_INKS 0x014E
438 #define TAG_DOT_RANGE 0x0150
439 #define TAG_TARGET_PRINTER 0x0151
440 #define TAG_EXTRA_SAMPLE 0x0152
441 #define TAG_SAMPLE_FORMAT 0x0153
442 #define TAG_S_MIN_SAMPLE_VALUE 0x0154
443 #define TAG_S_MAX_SAMPLE_VALUE 0x0155
444 #define TAG_TRANSFER_RANGE 0x0156
445 #define TAG_JPEG_TABLES 0x015B
446 #define TAG_JPEG_PROC 0x0200
447 #define TAG_JPEG_INTERCHANGE_FORMAT 0x0201
448 #define TAG_JPEG_INTERCHANGE_FORMAT_LEN 0x0202
449 #define TAG_JPEG_RESTART_INTERVAL 0x0203
450 #define TAG_JPEG_LOSSLESS_PREDICTOR 0x0205
451 #define TAG_JPEG_POINT_TRANSFORMS 0x0206
452 #define TAG_JPEG_Q_TABLES 0x0207
453 #define TAG_JPEG_DC_TABLES 0x0208
454 #define TAG_JPEG_AC_TABLES 0x0209
455 #define TAG_YCC_COEFFICIENTS 0x0211
456 #define TAG_YCC_SUB_SAMPLING 0x0212
457 #define TAG_YCC_POSITIONING 0x0213
458 #define TAG_REFERENCE_BLACK_WHITE 0x0214
459 /* 0x0301 - 0x0302 */
460 /* 0x0320 */
461 /* 0x0343 */
462 /* 0x5001 - 0x501B */
463 /* 0x5021 - 0x503B */
464 /* 0x5090 - 0x5091 */
465 /* 0x5100 - 0x5101 */
466 /* 0x5110 - 0x5113 */
467 /* 0x80E3 - 0x80E6 */
468 /* 0x828d - 0x828F */
469 #define TAG_COPYRIGHT 0x8298
470 #define TAG_EXPOSURETIME 0x829A
471 #define TAG_FNUMBER 0x829D
472 #define TAG_EXIF_IFD_POINTER 0x8769
473 #define TAG_ICC_PROFILE 0x8773
474 #define TAG_EXPOSURE_PROGRAM 0x8822
475 #define TAG_SPECTRAL_SENSITY 0x8824
476 #define TAG_GPS_IFD_POINTER 0x8825
477 #define TAG_ISOSPEED 0x8827
478 #define TAG_OPTOELECTRIC_CONVERSION_F 0x8828
479 /* 0x8829 - 0x882b */
480 #define TAG_EXIFVERSION 0x9000
481 #define TAG_DATE_TIME_ORIGINAL 0x9003
482 #define TAG_DATE_TIME_DIGITIZED 0x9004
483 #define TAG_COMPONENT_CONFIG 0x9101
484 #define TAG_COMPRESSED_BITS_PER_PIXEL 0x9102
485 #define TAG_SHUTTERSPEED 0x9201
486 #define TAG_APERTURE 0x9202
487 #define TAG_BRIGHTNESS_VALUE 0x9203
488 #define TAG_EXPOSURE_BIAS_VALUE 0x9204
489 #define TAG_MAX_APERTURE 0x9205
490 #define TAG_SUBJECT_DISTANCE 0x9206
491 #define TAG_METRIC_MODULE 0x9207
492 #define TAG_LIGHT_SOURCE 0x9208
493 #define TAG_FLASH 0x9209
494 #define TAG_FOCAL_LENGTH 0x920A
495 /* 0x920B - 0x920D */
496 /* 0x9211 - 0x9216 */
497 #define TAG_SUBJECT_AREA 0x9214
498 #define TAG_MAKER_NOTE 0x927C
499 #define TAG_USERCOMMENT 0x9286
500 #define TAG_SUB_SEC_TIME 0x9290
501 #define TAG_SUB_SEC_TIME_ORIGINAL 0x9291
502 #define TAG_SUB_SEC_TIME_DIGITIZED 0x9292
503 /* 0x923F */
504 /* 0x935C */
505 #define TAG_XP_TITLE 0x9C9B
506 #define TAG_XP_COMMENTS 0x9C9C
507 #define TAG_XP_AUTHOR 0x9C9D
508 #define TAG_XP_KEYWORDS 0x9C9E
509 #define TAG_XP_SUBJECT 0x9C9F
510 #define TAG_FLASH_PIX_VERSION 0xA000
511 #define TAG_COLOR_SPACE 0xA001
512 #define TAG_COMP_IMAGE_WIDTH 0xA002 /* compressed images only */
513 #define TAG_COMP_IMAGE_HEIGHT 0xA003
514 #define TAG_RELATED_SOUND_FILE 0xA004
515 #define TAG_INTEROP_IFD_POINTER 0xA005 /* IFD pointer */
516 #define TAG_FLASH_ENERGY 0xA20B
517 #define TAG_SPATIAL_FREQUENCY_RESPONSE 0xA20C
518 #define TAG_FOCALPLANE_X_RES 0xA20E
519 #define TAG_FOCALPLANE_Y_RES 0xA20F
520 #define TAG_FOCALPLANE_RESOLUTION_UNIT 0xA210
521 #define TAG_SUBJECT_LOCATION 0xA214
522 #define TAG_EXPOSURE_INDEX 0xA215
523 #define TAG_SENSING_METHOD 0xA217
524 #define TAG_FILE_SOURCE 0xA300
525 #define TAG_SCENE_TYPE 0xA301
526 #define TAG_CFA_PATTERN 0xA302
527 #define TAG_CUSTOM_RENDERED 0xA401
528 #define TAG_EXPOSURE_MODE 0xA402
529 #define TAG_WHITE_BALANCE 0xA403
530 #define TAG_DIGITAL_ZOOM_RATIO 0xA404
531 #define TAG_FOCAL_LENGTH_IN_35_MM_FILM 0xA405
532 #define TAG_SCENE_CAPTURE_TYPE 0xA406
533 #define TAG_GAIN_CONTROL 0xA407
534 #define TAG_CONTRAST 0xA408
535 #define TAG_SATURATION 0xA409
536 #define TAG_SHARPNESS 0xA40A
537 #define TAG_DEVICE_SETTING_DESCRIPTION 0xA40B
538 #define TAG_SUBJECT_DISTANCE_RANGE 0xA40C
539 #define TAG_IMAGE_UNIQUE_ID 0xA420
540
541 /* Olympus specific tags */
542 #define TAG_OLYMPUS_SPECIALMODE 0x0200
543 #define TAG_OLYMPUS_JPEGQUAL 0x0201
544 #define TAG_OLYMPUS_MACRO 0x0202
545 #define TAG_OLYMPUS_DIGIZOOM 0x0204
546 #define TAG_OLYMPUS_SOFTWARERELEASE 0x0207
547 #define TAG_OLYMPUS_PICTINFO 0x0208
548 #define TAG_OLYMPUS_CAMERAID 0x0209
549 /* end Olympus specific tags */
550
551 /* Internal */
552 #define TAG_NONE -1 /* note that -1 <> 0xFFFF */
553 #define TAG_COMPUTED_VALUE -2
554 #define TAG_END_OF_LIST 0xFFFD
555
556 /* Values for TAG_PHOTOMETRIC_INTERPRETATION */
557 #define PMI_BLACK_IS_ZERO 0
558 #define PMI_WHITE_IS_ZERO 1
559 #define PMI_RGB 2
560 #define PMI_PALETTE_COLOR 3
561 #define PMI_TRANSPARENCY_MASK 4
562 #define PMI_SEPARATED 5
563 #define PMI_YCBCR 6
564 #define PMI_CIELAB 8
565
566 /* }}} */
567
568 /* {{{ TabTable[]
569 */
570 typedef const struct {
571 unsigned short Tag;
572 char *Desc;
573 } tag_info_type;
574
575 typedef tag_info_type tag_info_array[];
576 typedef tag_info_type *tag_table_type;
577
578 #define TAG_TABLE_END \
579 {TAG_NONE, "No tag value"},\
580 {TAG_COMPUTED_VALUE, "Computed value"},\
581 {TAG_END_OF_LIST, ""} /* Important for exif_get_tagname() IF value != "" function result is != false */
582
583 static tag_info_array tag_table_IFD = {
584 { 0x000B, "ACDComment"},
585 { 0x00FE, "NewSubFile"}, /* better name it 'ImageType' ? */
586 { 0x00FF, "SubFile"},
587 { 0x0100, "ImageWidth"},
588 { 0x0101, "ImageLength"},
589 { 0x0102, "BitsPerSample"},
590 { 0x0103, "Compression"},
591 { 0x0106, "PhotometricInterpretation"},
592 { 0x010A, "FillOrder"},
593 { 0x010D, "DocumentName"},
594 { 0x010E, "ImageDescription"},
595 { 0x010F, "Make"},
596 { 0x0110, "Model"},
597 { 0x0111, "StripOffsets"},
598 { 0x0112, "Orientation"},
599 { 0x0115, "SamplesPerPixel"},
600 { 0x0116, "RowsPerStrip"},
601 { 0x0117, "StripByteCounts"},
602 { 0x0118, "MinSampleValue"},
603 { 0x0119, "MaxSampleValue"},
604 { 0x011A, "XResolution"},
605 { 0x011B, "YResolution"},
606 { 0x011C, "PlanarConfiguration"},
607 { 0x011D, "PageName"},
608 { 0x011E, "XPosition"},
609 { 0x011F, "YPosition"},
610 { 0x0120, "FreeOffsets"},
611 { 0x0121, "FreeByteCounts"},
612 { 0x0122, "GrayResponseUnit"},
613 { 0x0123, "GrayResponseCurve"},
614 { 0x0124, "T4Options"},
615 { 0x0125, "T6Options"},
616 { 0x0128, "ResolutionUnit"},
617 { 0x0129, "PageNumber"},
618 { 0x012D, "TransferFunction"},
619 { 0x0131, "Software"},
620 { 0x0132, "DateTime"},
621 { 0x013B, "Artist"},
622 { 0x013C, "HostComputer"},
623 { 0x013D, "Predictor"},
624 { 0x013E, "WhitePoint"},
625 { 0x013F, "PrimaryChromaticities"},
626 { 0x0140, "ColorMap"},
627 { 0x0141, "HalfToneHints"},
628 { 0x0142, "TileWidth"},
629 { 0x0143, "TileLength"},
630 { 0x0144, "TileOffsets"},
631 { 0x0145, "TileByteCounts"},
632 { 0x014A, "SubIFD"},
633 { 0x014C, "InkSet"},
634 { 0x014D, "InkNames"},
635 { 0x014E, "NumberOfInks"},
636 { 0x0150, "DotRange"},
637 { 0x0151, "TargetPrinter"},
638 { 0x0152, "ExtraSample"},
639 { 0x0153, "SampleFormat"},
640 { 0x0154, "SMinSampleValue"},
641 { 0x0155, "SMaxSampleValue"},
642 { 0x0156, "TransferRange"},
643 { 0x0157, "ClipPath"},
644 { 0x0158, "XClipPathUnits"},
645 { 0x0159, "YClipPathUnits"},
646 { 0x015A, "Indexed"},
647 { 0x015B, "JPEGTables"},
648 { 0x015F, "OPIProxy"},
649 { 0x0200, "JPEGProc"},
650 { 0x0201, "JPEGInterchangeFormat"},
651 { 0x0202, "JPEGInterchangeFormatLength"},
652 { 0x0203, "JPEGRestartInterval"},
653 { 0x0205, "JPEGLosslessPredictors"},
654 { 0x0206, "JPEGPointTransforms"},
655 { 0x0207, "JPEGQTables"},
656 { 0x0208, "JPEGDCTables"},
657 { 0x0209, "JPEGACTables"},
658 { 0x0211, "YCbCrCoefficients"},
659 { 0x0212, "YCbCrSubSampling"},
660 { 0x0213, "YCbCrPositioning"},
661 { 0x0214, "ReferenceBlackWhite"},
662 { 0x02BC, "ExtensibleMetadataPlatform"}, /* XAP: Extensible Authoring Publishing, obsoleted by XMP: Extensible Metadata Platform */
663 { 0x0301, "Gamma"},
664 { 0x0302, "ICCProfileDescriptor"},
665 { 0x0303, "SRGBRenderingIntent"},
666 { 0x0320, "ImageTitle"},
667 { 0x5001, "ResolutionXUnit"},
668 { 0x5002, "ResolutionYUnit"},
669 { 0x5003, "ResolutionXLengthUnit"},
670 { 0x5004, "ResolutionYLengthUnit"},
671 { 0x5005, "PrintFlags"},
672 { 0x5006, "PrintFlagsVersion"},
673 { 0x5007, "PrintFlagsCrop"},
674 { 0x5008, "PrintFlagsBleedWidth"},
675 { 0x5009, "PrintFlagsBleedWidthScale"},
676 { 0x500A, "HalftoneLPI"},
677 { 0x500B, "HalftoneLPIUnit"},
678 { 0x500C, "HalftoneDegree"},
679 { 0x500D, "HalftoneShape"},
680 { 0x500E, "HalftoneMisc"},
681 { 0x500F, "HalftoneScreen"},
682 { 0x5010, "JPEGQuality"},
683 { 0x5011, "GridSize"},
684 { 0x5012, "ThumbnailFormat"},
685 { 0x5013, "ThumbnailWidth"},
686 { 0x5014, "ThumbnailHeight"},
687 { 0x5015, "ThumbnailColorDepth"},
688 { 0x5016, "ThumbnailPlanes"},
689 { 0x5017, "ThumbnailRawBytes"},
690 { 0x5018, "ThumbnailSize"},
691 { 0x5019, "ThumbnailCompressedSize"},
692 { 0x501A, "ColorTransferFunction"},
693 { 0x501B, "ThumbnailData"},
694 { 0x5020, "ThumbnailImageWidth"},
695 { 0x5021, "ThumbnailImageHeight"},
696 { 0x5022, "ThumbnailBitsPerSample"},
697 { 0x5023, "ThumbnailCompression"},
698 { 0x5024, "ThumbnailPhotometricInterp"},
699 { 0x5025, "ThumbnailImageDescription"},
700 { 0x5026, "ThumbnailEquipMake"},
701 { 0x5027, "ThumbnailEquipModel"},
702 { 0x5028, "ThumbnailStripOffsets"},
703 { 0x5029, "ThumbnailOrientation"},
704 { 0x502A, "ThumbnailSamplesPerPixel"},
705 { 0x502B, "ThumbnailRowsPerStrip"},
706 { 0x502C, "ThumbnailStripBytesCount"},
707 { 0x502D, "ThumbnailResolutionX"},
708 { 0x502E, "ThumbnailResolutionY"},
709 { 0x502F, "ThumbnailPlanarConfig"},
710 { 0x5030, "ThumbnailResolutionUnit"},
711 { 0x5031, "ThumbnailTransferFunction"},
712 { 0x5032, "ThumbnailSoftwareUsed"},
713 { 0x5033, "ThumbnailDateTime"},
714 { 0x5034, "ThumbnailArtist"},
715 { 0x5035, "ThumbnailWhitePoint"},
716 { 0x5036, "ThumbnailPrimaryChromaticities"},
717 { 0x5037, "ThumbnailYCbCrCoefficients"},
718 { 0x5038, "ThumbnailYCbCrSubsampling"},
719 { 0x5039, "ThumbnailYCbCrPositioning"},
720 { 0x503A, "ThumbnailRefBlackWhite"},
721 { 0x503B, "ThumbnailCopyRight"},
722 { 0x5090, "LuminanceTable"},
723 { 0x5091, "ChrominanceTable"},
724 { 0x5100, "FrameDelay"},
725 { 0x5101, "LoopCount"},
726 { 0x5110, "PixelUnit"},
727 { 0x5111, "PixelPerUnitX"},
728 { 0x5112, "PixelPerUnitY"},
729 { 0x5113, "PaletteHistogram"},
730 { 0x1000, "RelatedImageFileFormat"},
731 { 0x800D, "ImageID"},
732 { 0x80E3, "Matteing"}, /* obsoleted by ExtraSamples */
733 { 0x80E4, "DataType"}, /* obsoleted by SampleFormat */
734 { 0x80E5, "ImageDepth"},
735 { 0x80E6, "TileDepth"},
736 { 0x828D, "CFARepeatPatternDim"},
737 { 0x828E, "CFAPattern"},
738 { 0x828F, "BatteryLevel"},
739 { 0x8298, "Copyright"},
740 { 0x829A, "ExposureTime"},
741 { 0x829D, "FNumber"},
742 { 0x83BB, "IPTC/NAA"},
743 { 0x84E3, "IT8RasterPadding"},
744 { 0x84E5, "IT8ColorTable"},
745 { 0x8649, "ImageResourceInformation"}, /* PhotoShop */
746 { 0x8769, "Exif_IFD_Pointer"},
747 { 0x8773, "ICC_Profile"},
748 { 0x8822, "ExposureProgram"},
749 { 0x8824, "SpectralSensity"},
750 { 0x8828, "OECF"},
751 { 0x8825, "GPS_IFD_Pointer"},
752 { 0x8827, "ISOSpeedRatings"},
753 { 0x8828, "OECF"},
754 { 0x9000, "ExifVersion"},
755 { 0x9003, "DateTimeOriginal"},
756 { 0x9004, "DateTimeDigitized"},
757 { 0x9101, "ComponentsConfiguration"},
758 { 0x9102, "CompressedBitsPerPixel"},
759 { 0x9201, "ShutterSpeedValue"},
760 { 0x9202, "ApertureValue"},
761 { 0x9203, "BrightnessValue"},
762 { 0x9204, "ExposureBiasValue"},
763 { 0x9205, "MaxApertureValue"},
764 { 0x9206, "SubjectDistance"},
765 { 0x9207, "MeteringMode"},
766 { 0x9208, "LightSource"},
767 { 0x9209, "Flash"},
768 { 0x920A, "FocalLength"},
769 { 0x920B, "FlashEnergy"}, /* 0xA20B in JPEG */
770 { 0x920C, "SpatialFrequencyResponse"}, /* 0xA20C - - */
771 { 0x920D, "Noise"},
772 { 0x920E, "FocalPlaneXResolution"}, /* 0xA20E - - */
773 { 0x920F, "FocalPlaneYResolution"}, /* 0xA20F - - */
774 { 0x9210, "FocalPlaneResolutionUnit"}, /* 0xA210 - - */
775 { 0x9211, "ImageNumber"},
776 { 0x9212, "SecurityClassification"},
777 { 0x9213, "ImageHistory"},
778 { 0x9214, "SubjectLocation"}, /* 0xA214 - - */
779 { 0x9215, "ExposureIndex"}, /* 0xA215 - - */
780 { 0x9216, "TIFF/EPStandardID"},
781 { 0x9217, "SensingMethod"}, /* 0xA217 - - */
782 { 0x923F, "StoNits"},
783 { 0x927C, "MakerNote"},
784 { 0x9286, "UserComment"},
785 { 0x9290, "SubSecTime"},
786 { 0x9291, "SubSecTimeOriginal"},
787 { 0x9292, "SubSecTimeDigitized"},
788 { 0x935C, "ImageSourceData"}, /* "Adobe Photoshop Document Data Block": 8BIM... */
789 { 0x9c9b, "Title" }, /* Win XP specific, Unicode */
790 { 0x9c9c, "Comments" }, /* Win XP specific, Unicode */
791 { 0x9c9d, "Author" }, /* Win XP specific, Unicode */
792 { 0x9c9e, "Keywords" }, /* Win XP specific, Unicode */
793 { 0x9c9f, "Subject" }, /* Win XP specific, Unicode, not to be confused with SubjectDistance and SubjectLocation */
794 { 0xA000, "FlashPixVersion"},
795 { 0xA001, "ColorSpace"},
796 { 0xA002, "ExifImageWidth"},
797 { 0xA003, "ExifImageLength"},
798 { 0xA004, "RelatedSoundFile"},
799 { 0xA005, "InteroperabilityOffset"},
800 { 0xA20B, "FlashEnergy"}, /* 0x920B in TIFF/EP */
801 { 0xA20C, "SpatialFrequencyResponse"}, /* 0x920C - - */
802 { 0xA20D, "Noise"},
803 { 0xA20E, "FocalPlaneXResolution"}, /* 0x920E - - */
804 { 0xA20F, "FocalPlaneYResolution"}, /* 0x920F - - */
805 { 0xA210, "FocalPlaneResolutionUnit"}, /* 0x9210 - - */
806 { 0xA211, "ImageNumber"},
807 { 0xA212, "SecurityClassification"},
808 { 0xA213, "ImageHistory"},
809 { 0xA214, "SubjectLocation"}, /* 0x9214 - - */
810 { 0xA215, "ExposureIndex"}, /* 0x9215 - - */
811 { 0xA216, "TIFF/EPStandardID"},
812 { 0xA217, "SensingMethod"}, /* 0x9217 - - */
813 { 0xA300, "FileSource"},
814 { 0xA301, "SceneType"},
815 { 0xA302, "CFAPattern"},
816 { 0xA401, "CustomRendered"},
817 { 0xA402, "ExposureMode"},
818 { 0xA403, "WhiteBalance"},
819 { 0xA404, "DigitalZoomRatio"},
820 { 0xA405, "FocalLengthIn35mmFilm"},
821 { 0xA406, "SceneCaptureType"},
822 { 0xA407, "GainControl"},
823 { 0xA408, "Contrast"},
824 { 0xA409, "Saturation"},
825 { 0xA40A, "Sharpness"},
826 { 0xA40B, "DeviceSettingDescription"},
827 { 0xA40C, "SubjectDistanceRange"},
828 { 0xA420, "ImageUniqueID"},
829 TAG_TABLE_END
830 } ;
831
832 static tag_info_array tag_table_GPS = {
833 { 0x0000, "GPSVersion"},
834 { 0x0001, "GPSLatitudeRef"},
835 { 0x0002, "GPSLatitude"},
836 { 0x0003, "GPSLongitudeRef"},
837 { 0x0004, "GPSLongitude"},
838 { 0x0005, "GPSAltitudeRef"},
839 { 0x0006, "GPSAltitude"},
840 { 0x0007, "GPSTimeStamp"},
841 { 0x0008, "GPSSatellites"},
842 { 0x0009, "GPSStatus"},
843 { 0x000A, "GPSMeasureMode"},
844 { 0x000B, "GPSDOP"},
845 { 0x000C, "GPSSpeedRef"},
846 { 0x000D, "GPSSpeed"},
847 { 0x000E, "GPSTrackRef"},
848 { 0x000F, "GPSTrack"},
849 { 0x0010, "GPSImgDirectionRef"},
850 { 0x0011, "GPSImgDirection"},
851 { 0x0012, "GPSMapDatum"},
852 { 0x0013, "GPSDestLatitudeRef"},
853 { 0x0014, "GPSDestLatitude"},
854 { 0x0015, "GPSDestLongitudeRef"},
855 { 0x0016, "GPSDestLongitude"},
856 { 0x0017, "GPSDestBearingRef"},
857 { 0x0018, "GPSDestBearing"},
858 { 0x0019, "GPSDestDistanceRef"},
859 { 0x001A, "GPSDestDistance"},
860 { 0x001B, "GPSProcessingMode"},
861 { 0x001C, "GPSAreaInformation"},
862 { 0x001D, "GPSDateStamp"},
863 { 0x001E, "GPSDifferential"},
864 TAG_TABLE_END
865 };
866
867 static tag_info_array tag_table_IOP = {
868 { 0x0001, "InterOperabilityIndex"}, /* should be 'R98' or 'THM' */
869 { 0x0002, "InterOperabilityVersion"},
870 { 0x1000, "RelatedFileFormat"},
871 { 0x1001, "RelatedImageWidth"},
872 { 0x1002, "RelatedImageHeight"},
873 TAG_TABLE_END
874 };
875
876 static tag_info_array tag_table_VND_CANON = {
877 { 0x0001, "ModeArray"}, /* guess */
878 { 0x0004, "ImageInfo"}, /* guess */
879 { 0x0006, "ImageType"},
880 { 0x0007, "FirmwareVersion"},
881 { 0x0008, "ImageNumber"},
882 { 0x0009, "OwnerName"},
883 { 0x000C, "Camera"},
884 { 0x000F, "CustomFunctions"},
885 TAG_TABLE_END
886 };
887
888 static tag_info_array tag_table_VND_CASIO = {
889 { 0x0001, "RecordingMode"},
890 { 0x0002, "Quality"},
891 { 0x0003, "FocusingMode"},
892 { 0x0004, "FlashMode"},
893 { 0x0005, "FlashIntensity"},
894 { 0x0006, "ObjectDistance"},
895 { 0x0007, "WhiteBalance"},
896 { 0x000A, "DigitalZoom"},
897 { 0x000B, "Sharpness"},
898 { 0x000C, "Contrast"},
899 { 0x000D, "Saturation"},
900 { 0x0014, "CCDSensitivity"},
901 TAG_TABLE_END
902 };
903
904 static tag_info_array tag_table_VND_FUJI = {
905 { 0x0000, "Version"},
906 { 0x1000, "Quality"},
907 { 0x1001, "Sharpness"},
908 { 0x1002, "WhiteBalance"},
909 { 0x1003, "Color"},
910 { 0x1004, "Tone"},
911 { 0x1010, "FlashMode"},
912 { 0x1011, "FlashStrength"},
913 { 0x1020, "Macro"},
914 { 0x1021, "FocusMode"},
915 { 0x1030, "SlowSync"},
916 { 0x1031, "PictureMode"},
917 { 0x1100, "ContTake"},
918 { 0x1300, "BlurWarning"},
919 { 0x1301, "FocusWarning"},
920 { 0x1302, "AEWarning "},
921 TAG_TABLE_END
922 };
923
924 static tag_info_array tag_table_VND_NIKON = {
925 { 0x0003, "Quality"},
926 { 0x0004, "ColorMode"},
927 { 0x0005, "ImageAdjustment"},
928 { 0x0006, "CCDSensitivity"},
929 { 0x0007, "WhiteBalance"},
930 { 0x0008, "Focus"},
931 { 0x000a, "DigitalZoom"},
932 { 0x000b, "Converter"},
933 TAG_TABLE_END
934 };
935
936 static tag_info_array tag_table_VND_NIKON_990 = {
937 { 0x0001, "Version"},
938 { 0x0002, "ISOSetting"},
939 { 0x0003, "ColorMode"},
940 { 0x0004, "Quality"},
941 { 0x0005, "WhiteBalance"},
942 { 0x0006, "ImageSharpening"},
943 { 0x0007, "FocusMode"},
944 { 0x0008, "FlashSetting"},
945 { 0x000F, "ISOSelection"},
946 { 0x0080, "ImageAdjustment"},
947 { 0x0082, "AuxiliaryLens"},
948 { 0x0085, "ManualFocusDistance"},
949 { 0x0086, "DigitalZoom"},
950 { 0x0088, "AFFocusPosition"},
951 { 0x0010, "DataDump"},
952 TAG_TABLE_END
953 };
954
955 static tag_info_array tag_table_VND_OLYMPUS = {
956 { 0x0200, "SpecialMode"},
957 { 0x0201, "JPEGQuality"},
958 { 0x0202, "Macro"},
959 { 0x0204, "DigitalZoom"},
960 { 0x0207, "SoftwareRelease"},
961 { 0x0208, "PictureInfo"},
962 { 0x0209, "CameraId"},
963 { 0x0F00, "DataDump"},
964 TAG_TABLE_END
965 };
966
967 static tag_info_array tag_table_VND_SAMSUNG = {
968 { 0x0001, "Version"},
969 { 0x0021, "PictureWizard"},
970 { 0x0030, "LocalLocationName"},
971 { 0x0031, "LocationName"},
972 { 0x0035, "Preview"},
973 { 0x0043, "CameraTemperature"},
974 { 0xa001, "FirmwareName"},
975 { 0xa003, "LensType"},
976 { 0xa004, "LensFirmware"},
977 { 0xa010, "SensorAreas"},
978 { 0xa011, "ColorSpace"},
979 { 0xa012, "SmartRange"},
980 { 0xa013, "ExposureBiasValue"},
981 { 0xa014, "ISO"},
982 { 0xa018, "ExposureTime"},
983 { 0xa019, "FNumber"},
984 { 0xa01a, "FocalLengthIn35mmFormat"},
985 { 0xa020, "EncryptionKey"},
986 { 0xa021, "WB_RGGBLevelsUncorrected"},
987 { 0xa022, "WB_RGGBLevelsAuto"},
988 { 0xa023, "WB_RGGBLevelsIlluminator1"},
989 { 0xa024, "WB_RGGBLevelsIlluminator2"},
990 { 0xa028, "WB_RGGBLevelsBlack"},
991 { 0xa030, "ColorMatrix"},
992 { 0xa031, "ColorMatrixSRGB"},
993 { 0xa032, "ColorMatrixAdobeRGB"},
994 { 0xa040, "ToneCurve1"},
995 { 0xa041, "ToneCurve2"},
996 { 0xa042, "ToneCurve3"},
997 { 0xa043, "ToneCurve4"},
998 TAG_TABLE_END
999 };
1000
1001 static tag_info_array tag_table_VND_PANASONIC = {
1002 { 0x0001, "Quality"},
1003 { 0x0002, "FirmwareVersion"},
1004 { 0x0003, "WhiteBalance"},
1005 { 0x0007, "FocusMode"},
1006 { 0x000f, "AFMode"},
1007 { 0x001a, "ImageStabilization"},
1008 { 0x001c, "Macro"},
1009 { 0x001f, "ShootingMode"},
1010 { 0x0020, "Audio"},
1011 { 0x0021, "DataDump"},
1012 { 0x0023, "WhiteBalanceBias"},
1013 { 0x0024, "FlashBias"},
1014 { 0x0025, "InternalSerialNumber"},
1015 { 0x0026, "ExifVersion"},
1016 { 0x0028, "ColorEffect"},
1017 { 0x0029, "TimeSincePowerOn"},
1018 { 0x002a, "BurstMode"},
1019 { 0x002b, "SequenceNumber"},
1020 { 0x002c, "Contrast"},
1021 { 0x002d, "NoiseReduction"},
1022 { 0x002e, "SelfTimer"},
1023 { 0x0030, "Rotation"},
1024 { 0x0031, "AFAssistLamp"},
1025 { 0x0032, "ColorMode"},
1026 { 0x0033, "BabyAge1"},
1027 { 0x0034, "OpticalZoomMode"},
1028 { 0x0035, "ConversionLens"},
1029 { 0x0036, "TravelDay"},
1030 { 0x0039, "Contrast"},
1031 { 0x003a, "WorldTimeLocation"},
1032 { 0x003b, "TextStamp1"},
1033 { 0x003c, "ProgramISO"},
1034 { 0x003d, "AdvancedSceneType"},
1035 { 0x003e, "TextStamp2"},
1036 { 0x003f, "FacesDetected"},
1037 { 0x0040, "Saturation"},
1038 { 0x0041, "Sharpness"},
1039 { 0x0042, "FilmMode"},
1040 { 0x0044, "ColorTempKelvin"},
1041 { 0x0045, "BracketSettings"},
1042 { 0x0046, "WBAdjustAB"},
1043 { 0x0047, "WBAdjustGM"},
1044 { 0x0048, "FlashCurtain"},
1045 { 0x0049, "LongShutterNoiseReduction"},
1046 { 0x004b, "ImageWidth"},
1047 { 0x004c, "ImageHeight"},
1048 { 0x004d, "AFPointPosition"},
1049 { 0x004e, "FaceDetInfo"},
1050 { 0x0051, "LensType"},
1051 { 0x0052, "LensSerialNumber"},
1052 { 0x0053, "AccessoryType"},
1053 { 0x0054, "AccessorySerialNumber"},
1054 { 0x0059, "Transform1"},
1055 { 0x005d, "IntelligentExposure"},
1056 { 0x0060, "LensFirmwareVersion"},
1057 { 0x0061, "FaceRecInfo"},
1058 { 0x0062, "FlashWarning"},
1059 { 0x0065, "Title"},
1060 { 0x0066, "BabyName"},
1061 { 0x0067, "Location"},
1062 { 0x0069, "Country"},
1063 { 0x006b, "State"},
1064 { 0x006d, "City"},
1065 { 0x006f, "Landmark"},
1066 { 0x0070, "IntelligentResolution"},
1067 { 0x0077, "BurstSheed"},
1068 { 0x0079, "IntelligentDRange"},
1069 { 0x007c, "ClearRetouch"},
1070 { 0x0080, "City2"},
1071 { 0x0086, "ManometerPressure"},
1072 { 0x0089, "PhotoStyle"},
1073 { 0x008a, "ShadingCompensation"},
1074 { 0x008c, "AccelerometerZ"},
1075 { 0x008d, "AccelerometerX"},
1076 { 0x008e, "AccelerometerY"},
1077 { 0x008f, "CameraOrientation"},
1078 { 0x0090, "RollAngle"},
1079 { 0x0091, "PitchAngle"},
1080 { 0x0093, "SweepPanoramaDirection"},
1081 { 0x0094, "PanoramaFieldOfView"},
1082 { 0x0096, "TimerRecording"},
1083 { 0x009d, "InternalNDFilter"},
1084 { 0x009e, "HDR"},
1085 { 0x009f, "ShutterType"},
1086 { 0x00a3, "ClearRetouchValue"},
1087 { 0x00ab, "TouchAE"},
1088 { 0x0e00, "PrintIM"},
1089 { 0x8000, "MakerNoteVersion"},
1090 { 0x8001, "SceneMode"},
1091 { 0x8004, "WBRedLevel"},
1092 { 0x8005, "WBGreenLevel"},
1093 { 0x8006, "WBBlueLevel"},
1094 { 0x8007, "FlashFired"},
1095 { 0x8008, "TextStamp3"},
1096 { 0x8009, "TextStamp4"},
1097 { 0x8010, "BabyAge2"},
1098 { 0x8012, "Transform2"},
1099 TAG_TABLE_END
1100 };
1101
1102 static tag_info_array tag_table_VND_DJI = {
1103 { 0x0001, "Make"},
1104 { 0x0003, "SpeedX"},
1105 { 0x0004, "SpeedY"},
1106 { 0x0005, "SpeedZ"},
1107 { 0x0006, "Pitch"},
1108 { 0x0007, "Yaw"},
1109 { 0x0008, "Roll"},
1110 { 0x0009, "CameraPitch"},
1111 { 0x000a, "CameraYaw"},
1112 { 0x000b, "CameraRoll"},
1113 TAG_TABLE_END
1114 };
1115
1116 static tag_info_array tag_table_VND_SONY = {
1117 { 0x0102, "Quality"},
1118 { 0x0104, "FlashExposureComp"},
1119 { 0x0105, "Teleconverter"},
1120 { 0x0112, "WhiteBalanceFineTune"},
1121 { 0x0114, "CameraSettings"},
1122 { 0x0115, "WhiteBalance"},
1123 { 0x0116, "ExtraInfo"},
1124 { 0x0e00, "PrintIM"},
1125 { 0x1000, "MultiBurstMode"},
1126 { 0x1001, "MultiBurstImageWidth"},
1127 { 0x1002, "MultiBurstImageHeight"},
1128 { 0x1003, "Panorama"},
1129 { 0x2001, "PreviewImage"},
1130 { 0x2002, "Rating"},
1131 { 0x2004, "Contrast"},
1132 { 0x2005, "Saturation"},
1133 { 0x2006, "Sharpness"},
1134 { 0x2007, "Brightness"},
1135 { 0x2008, "LongExposureNoiseReduction"},
1136 { 0x2009, "HighISONoiseReduction"},
1137 { 0x200a, "AutoHDR"},
1138 { 0x3000, "ShotInfo"},
1139 { 0xb000, "FileFormat"},
1140 { 0xb001, "SonyModelID"},
1141 { 0xb020, "ColorReproduction"},
1142 { 0xb021, "ColorTemperature"},
1143 { 0xb022, "ColorCompensationFilter"},
1144 { 0xb023, "SceneMode"},
1145 { 0xb024, "ZoneMatching"},
1146 { 0xb025, "DynamicRangeOptimizer"},
1147 { 0xb026, "ImageStabilization"},
1148 { 0xb027, "LensID"},
1149 { 0xb028, "MinoltaMakerNote"},
1150 { 0xb029, "ColorMode"},
1151 { 0xb02b, "FullImageSize"},
1152 { 0xb02c, "PreviewImageSize"},
1153 { 0xb040, "Macro"},
1154 { 0xb041, "ExposureMode"},
1155 { 0xb042, "FocusMode"},
1156 { 0xb043, "AFMode"},
1157 { 0xb044, "AFIlluminator"},
1158 { 0xb047, "JPEGQuality"},
1159 { 0xb048, "FlashLevel"},
1160 { 0xb049, "ReleaseMode"},
1161 { 0xb04a, "SequenceNumber"},
1162 { 0xb04b, "AntiBlur"},
1163 { 0xb04e, "FocusMode"},
1164 { 0xb04f, "DynamicRangeOptimizer"},
1165 { 0xb050, "HighISONoiseReduction2"},
1166 { 0xb052, "IntelligentAuto"},
1167 { 0xb054, "WhiteBalance2"},
1168 TAG_TABLE_END
1169 };
1170
1171 static tag_info_array tag_table_VND_PENTAX = {
1172 { 0x0000, "Version"},
1173 { 0x0001, "Mode"},
1174 { 0x0002, "PreviewResolution"},
1175 { 0x0003, "PreviewLength"},
1176 { 0x0004, "PreviewOffset"},
1177 { 0x0005, "ModelID"},
1178 { 0x0006, "Date"},
1179 { 0x0007, "Time"},
1180 { 0x0008, "Quality"},
1181 { 0x0009, "Size"},
1182 { 0x000c, "Flash"},
1183 { 0x000d, "Focus"},
1184 { 0x000e, "AFPoint"},
1185 { 0x000f, "AFPointInFocus"},
1186 { 0x0012, "ExposureTime"},
1187 { 0x0013, "FNumber"},
1188 { 0x0014, "ISO"},
1189 { 0x0016, "ExposureCompensation"},
1190 { 0x0017, "MeteringMode"},
1191 { 0x0018, "AutoBracketing"},
1192 { 0x0019, "WhiteBalance"},
1193 { 0x001a, "WhiteBalanceMode"},
1194 { 0x001b, "BlueBalance"},
1195 { 0x001c, "RedBalance"},
1196 { 0x001d, "FocalLength"},
1197 { 0x001e, "DigitalZoom"},
1198 { 0x001f, "Saturation"},
1199 { 0x0020, "Contrast"},
1200 { 0x0021, "Sharpness"},
1201 { 0x0022, "Location"},
1202 { 0x0023, "Hometown"},
1203 { 0x0024, "Destination"},
1204 { 0x0025, "HometownDST"},
1205 { 0x0026, "DestinationDST"},
1206 { 0x0027, "DSPFirmwareVersion"},
1207 { 0x0028, "CPUFirmwareVersion"},
1208 { 0x0029, "FrameNumber"},
1209 { 0x002d, "EffectiveLV"},
1210 { 0x0032, "ImageProcessing"},
1211 { 0x0033, "PictureMode"},
1212 { 0x0034, "DriveMode"},
1213 { 0x0037, "ColorSpace"},
1214 { 0x0038, "ImageAreaOffset"},
1215 { 0x0039, "RawImageSize"},
1216 { 0x003e, "PreviewImageBorders"},
1217 { 0x003f, "LensType"},
1218 { 0x0040, "SensitivityAdjust"},
1219 { 0x0041, "DigitalFilter"},
1220 { 0x0047, "Temperature"},
1221 { 0x0048, "AELock"},
1222 { 0x0049, "NoiseReduction"},
1223 { 0x004d, "FlashExposureCompensation"},
1224 { 0x004f, "ImageTone"},
1225 { 0x0050, "ColorTemperature"},
1226 { 0x005c, "ShakeReduction"},
1227 { 0x005d, "ShutterCount"},
1228 { 0x0069, "DynamicRangeExpansion"},
1229 { 0x0071, "HighISONoiseReduction"},
1230 { 0x0072, "AFAdjustment"},
1231 { 0x0200, "BlackPoint"},
1232 { 0x0201, "WhitePoint"},
1233 { 0x0205, "ShotInfo"},
1234 { 0x0206, "AEInfo"},
1235 { 0x0207, "LensInfo"},
1236 { 0x0208, "FlashInfo"},
1237 { 0x0209, "AEMeteringSegments"},
1238 { 0x020a, "FlashADump"},
1239 { 0x020b, "FlashBDump"},
1240 { 0x020d, "WB_RGGBLevelsDaylight"},
1241 { 0x020e, "WB_RGGBLevelsShade"},
1242 { 0x020f, "WB_RGGBLevelsCloudy"},
1243 { 0x0210, "WB_RGGBLevelsTungsten"},
1244 { 0x0211, "WB_RGGBLevelsFluorescentD"},
1245 { 0x0212, "WB_RGGBLevelsFluorescentN"},
1246 { 0x0213, "WB_RGGBLevelsFluorescentW"},
1247 { 0x0214, "WB_RGGBLevelsFlash"},
1248 { 0x0215, "CameraInfo"},
1249 { 0x0216, "BatteryInfo"},
1250 { 0x021f, "AFInfo"},
1251 { 0x0222, "ColorInfo"},
1252 { 0x0229, "SerialNumber"},
1253 TAG_TABLE_END
1254 };
1255
1256 static tag_info_array tag_table_VND_MINOLTA = {
1257 { 0x0000, "Version"},
1258 { 0x0001, "CameraSettingsStdOld"},
1259 { 0x0003, "CameraSettingsStdNew"},
1260 { 0x0004, "CameraSettings7D"},
1261 { 0x0018, "ImageStabilizationData"},
1262 { 0x0020, "WBInfoA100"},
1263 { 0x0040, "CompressedImageSize"},
1264 { 0x0081, "Thumbnail"},
1265 { 0x0088, "ThumbnailOffset"},
1266 { 0x0089, "ThumbnailLength"},
1267 { 0x0100, "SceneMode"},
1268 { 0x0101, "ColorMode"},
1269 { 0x0102, "Quality"},
1270 { 0x0104, "FlashExposureComp"},
1271 { 0x0105, "Teleconverter"},
1272 { 0x0107, "ImageStabilization"},
1273 { 0x0109, "RawAndJpgRecording"},
1274 { 0x010a, "ZoneMatching"},
1275 { 0x010b, "ColorTemperature"},
1276 { 0x010c, "LensID"},
1277 { 0x0111, "ColorCompensationFilter"},
1278 { 0x0112, "WhiteBalanceFineTune"},
1279 { 0x0113, "ImageStabilizationA100"},
1280 { 0x0114, "CameraSettings5D"},
1281 { 0x0115, "WhiteBalance"},
1282 { 0x0e00, "PrintIM"},
1283 { 0x0f00, "CameraSettingsZ1"},
1284 TAG_TABLE_END
1285 };
1286
1287 static tag_info_array tag_table_VND_SIGMA = {
1288 { 0x0002, "SerialNumber"},
1289 { 0x0003, "DriveMode"},
1290 { 0x0004, "ResolutionMode"},
1291 { 0x0005, "AutofocusMode"},
1292 { 0x0006, "FocusSetting"},
1293 { 0x0007, "WhiteBalance"},
1294 { 0x0008, "ExposureMode"},
1295 { 0x0009, "MeteringMode"},
1296 { 0x000a, "LensRange"},
1297 { 0x000b, "ColorSpace"},
1298 { 0x000c, "Exposure"},
1299 { 0x000d, "Contrast"},
1300 { 0x000e, "Shadow"},
1301 { 0x000f, "Highlight"},
1302 { 0x0010, "Saturation"},
1303 { 0x0011, "Sharpness"},
1304 { 0x0012, "FillLight"},
1305 { 0x0014, "ColorAdjustment"},
1306 { 0x0015, "AdjustmentMode"},
1307 { 0x0016, "Quality"},
1308 { 0x0017, "Firmware"},
1309 { 0x0018, "Software"},
1310 { 0x0019, "AutoBracket"},
1311 TAG_TABLE_END
1312 };
1313
1314 static tag_info_array tag_table_VND_KYOCERA = {
1315 { 0x0001, "FormatThumbnail"},
1316 { 0x0E00, "PrintImageMatchingInfo"},
1317 TAG_TABLE_END
1318 };
1319
1320 static tag_info_array tag_table_VND_RICOH = {
1321 { 0x0001, "MakerNoteDataType"},
1322 { 0x0002, "Version"},
1323 { 0x0E00, "PrintImageMatchingInfo"},
1324 { 0x2001, "RicohCameraInfoMakerNoteSubIFD"},
1325 TAG_TABLE_END
1326 };
1327
1328 typedef enum mn_byte_order_t {
1329 MN_ORDER_INTEL = 0,
1330 MN_ORDER_MOTOROLA = 1,
1331 MN_ORDER_NORMAL
1332 } mn_byte_order_t;
1333
1334 typedef enum mn_offset_mode_t {
1335 MN_OFFSET_NORMAL,
1336 MN_OFFSET_MAKER
1337 #ifdef KALLE_0
1338 , MN_OFFSET_GUESS
1339 #endif
1340 } mn_offset_mode_t;
1341
1342 typedef struct {
1343 tag_table_type tag_table;
1344 char * make;
1345 char * model;
1346 char * id_string;
1347 int id_string_len;
1348 int offset;
1349 mn_byte_order_t byte_order;
1350 mn_offset_mode_t offset_mode;
1351 } maker_note_type;
1352
1353 /* Remember to update PHP_MINFO if updated */
1354 static const maker_note_type maker_note_array[] = {
1355 { tag_table_VND_CANON, "Canon", NULL, NULL, 0, 0, MN_ORDER_INTEL, MN_OFFSET_NORMAL},
1356 { tag_table_VND_CASIO, "CASIO", NULL, NULL, 0, 0, MN_ORDER_MOTOROLA, MN_OFFSET_NORMAL},
1357 { tag_table_VND_FUJI, "FUJIFILM", NULL, "FUJIFILM\x0C\x00\x00\x00", 12, 12, MN_ORDER_INTEL, MN_OFFSET_MAKER},
1358 { tag_table_VND_NIKON, "NIKON", NULL, "Nikon\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
1359 { tag_table_VND_NIKON_990, "NIKON", NULL, NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
1360 { tag_table_VND_OLYMPUS, "OLYMPUS OPTICAL CO.,LTD", NULL, "OLYMP\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
1361 { tag_table_VND_SAMSUNG, "SAMSUNG", NULL, NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
1362 { tag_table_VND_PANASONIC, "Panasonic", NULL, "Panasonic\x00\x00\x00", 12, 12, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
1363 { tag_table_VND_DJI, "DJI", NULL, NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
1364 { tag_table_VND_SONY, "SONY", NULL, "SONY DSC \x00\x00\x00", 12, 12, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
1365 { tag_table_VND_SONY, "SONY", NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
1366 { tag_table_VND_PENTAX, "PENTAX", NULL, "AOC\x00", 6, 6, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
1367 { tag_table_VND_MINOLTA, "Minolta, KONICA MINOLTA", NULL, NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
1368 { tag_table_VND_SIGMA, "SIGMA, FOVEON", NULL, "SIGMA\x00\x00\x00", 10, 10, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
1369 { tag_table_VND_SIGMA, "SIGMA, FOVEON", NULL, "FOVEON\x00\x00\x00", 10, 10, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
1370 { tag_table_VND_KYOCERA, "KYOCERA, CONTAX", NULL, "KYOCERA \x00\x00\x00", 22, 22, MN_ORDER_NORMAL, MN_OFFSET_MAKER},
1371 { tag_table_VND_RICOH, "RICOH", NULL, "Ricoh", 5, 5, MN_ORDER_MOTOROLA, MN_OFFSET_NORMAL},
1372 { tag_table_VND_RICOH, "RICOH", NULL, "RICOH", 5, 5, MN_ORDER_MOTOROLA, MN_OFFSET_NORMAL},
1373
1374 /* These re-uses existing formats */
1375 { tag_table_VND_OLYMPUS, "AGFA", NULL, "AGFA \x00\x01", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
1376 { tag_table_VND_OLYMPUS, "EPSON", NULL, "EPSON\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL}
1377 };
1378 /* }}} */
1379
1380 /* {{{ exif_get_tagname
1381 Get headername for tag_num or NULL if not defined */
exif_get_tagname(int tag_num,char * ret,int len,tag_table_type tag_table)1382 static char * exif_get_tagname(int tag_num, char *ret, int len, tag_table_type tag_table)
1383 {
1384 int i, t;
1385 char tmp[32];
1386
1387 for (i = 0; (t = tag_table[i].Tag) != TAG_END_OF_LIST; i++) {
1388 if (t == tag_num) {
1389 if (ret && len) {
1390 strlcpy(ret, tag_table[i].Desc, abs(len));
1391 if (len < 0) {
1392 memset(ret + strlen(ret), ' ', -len - strlen(ret) - 1);
1393 ret[-len - 1] = '\0';
1394 }
1395 return ret;
1396 }
1397 return tag_table[i].Desc;
1398 }
1399 }
1400
1401 if (ret && len) {
1402 snprintf(tmp, sizeof(tmp), "UndefinedTag:0x%04X", tag_num);
1403 strlcpy(ret, tmp, abs(len));
1404 if (len < 0) {
1405 memset(ret + strlen(ret), ' ', -len - strlen(ret) - 1);
1406 ret[-len - 1] = '\0';
1407 }
1408 return ret;
1409 }
1410 return "";
1411 }
1412 /* }}} */
1413
1414 /* {{{ exif_char_dump
1415 * Do not use! This is a debug function... */
1416 #ifdef EXIF_DEBUG
exif_char_dump(unsigned char * addr,int len,int offset)1417 static unsigned char* exif_char_dump(unsigned char * addr, int len, int offset)
1418 {
1419 static unsigned char buf[4096+1];
1420 static unsigned char tmp[20];
1421 int c, i, p=0, n = 5+31;
1422
1423 p += slprintf(buf+p, sizeof(buf)-p, "\nDump Len: %08X (%d)", len, len);
1424 if (len) {
1425 for(i=0; i<len+15 && p+n<=sizeof(buf); i++) {
1426 if (i%16==0) {
1427 p += slprintf(buf+p, sizeof(buf)-p, "\n%08X: ", i+offset);
1428 }
1429 if (i<len) {
1430 c = *addr++;
1431 p += slprintf(buf+p, sizeof(buf)-p, "%02X ", c);
1432 tmp[i%16] = c>=32 ? c : '.';
1433 tmp[(i%16)+1] = '\0';
1434 } else {
1435 p += slprintf(buf+p, sizeof(buf)-p, " ");
1436 }
1437 if (i%16==15) {
1438 p += slprintf(buf+p, sizeof(buf)-p, " %s", tmp);
1439 if (i>=len) {
1440 break;
1441 }
1442 }
1443 }
1444 }
1445 buf[sizeof(buf)-1] = '\0';
1446 return buf;
1447 }
1448 #endif
1449 /* }}} */
1450
1451 /* {{{ php_jpg_get16
1452 Get 16 bits motorola order (always) for jpeg header stuff.
1453 */
php_jpg_get16(void * value)1454 static int php_jpg_get16(void *value)
1455 {
1456 return (((uchar *)value)[0] << 8) | ((uchar *)value)[1];
1457 }
1458 /* }}} */
1459
1460 /* {{{ php_ifd_get16u
1461 * Convert a 16 bit unsigned value from file's native byte order */
php_ifd_get16u(void * value,int motorola_intel)1462 static int php_ifd_get16u(void *value, int motorola_intel)
1463 {
1464 if (motorola_intel) {
1465 return (((uchar *)value)[0] << 8) | ((uchar *)value)[1];
1466 } else {
1467 return (((uchar *)value)[1] << 8) | ((uchar *)value)[0];
1468 }
1469 }
1470 /* }}} */
1471
1472 /* {{{ php_ifd_get16s
1473 * Convert a 16 bit signed value from file's native byte order */
php_ifd_get16s(void * value,int motorola_intel)1474 static signed short php_ifd_get16s(void *value, int motorola_intel)
1475 {
1476 return (signed short)php_ifd_get16u(value, motorola_intel);
1477 }
1478 /* }}} */
1479
1480 /* {{{ php_ifd_get32s
1481 * Convert a 32 bit signed value from file's native byte order */
php_ifd_get32s(void * value,int motorola_intel)1482 static int php_ifd_get32s(void *value, int motorola_intel)
1483 {
1484 if (motorola_intel) {
1485 return (((char *)value)[0] << 24)
1486 | (((uchar *)value)[1] << 16)
1487 | (((uchar *)value)[2] << 8 )
1488 | (((uchar *)value)[3] );
1489 } else {
1490 return (((char *)value)[3] << 24)
1491 | (((uchar *)value)[2] << 16)
1492 | (((uchar *)value)[1] << 8 )
1493 | (((uchar *)value)[0] );
1494 }
1495 }
1496 /* }}} */
1497
1498 /* {{{ php_ifd_get32u
1499 * Write 32 bit unsigned value to data */
php_ifd_get32u(void * value,int motorola_intel)1500 static unsigned php_ifd_get32u(void *value, int motorola_intel)
1501 {
1502 return (unsigned)php_ifd_get32s(value, motorola_intel) & 0xffffffff;
1503 }
1504 /* }}} */
1505
1506 /* {{{ php_ifd_set16u
1507 * Write 16 bit unsigned value to data */
php_ifd_set16u(char * data,unsigned int value,int motorola_intel)1508 static void php_ifd_set16u(char *data, unsigned int value, int motorola_intel)
1509 {
1510 if (motorola_intel) {
1511 data[0] = (value & 0xFF00) >> 8;
1512 data[1] = (value & 0x00FF);
1513 } else {
1514 data[1] = (value & 0xFF00) >> 8;
1515 data[0] = (value & 0x00FF);
1516 }
1517 }
1518 /* }}} */
1519
1520 /* {{{ php_ifd_set32u
1521 * Convert a 32 bit unsigned value from file's native byte order */
php_ifd_set32u(char * data,size_t value,int motorola_intel)1522 static void php_ifd_set32u(char *data, size_t value, int motorola_intel)
1523 {
1524 if (motorola_intel) {
1525 data[0] = (value & 0xFF000000) >> 24;
1526 data[1] = (value & 0x00FF0000) >> 16;
1527 data[2] = (value & 0x0000FF00) >> 8;
1528 data[3] = (value & 0x000000FF);
1529 } else {
1530 data[3] = (value & 0xFF000000) >> 24;
1531 data[2] = (value & 0x00FF0000) >> 16;
1532 data[1] = (value & 0x0000FF00) >> 8;
1533 data[0] = (value & 0x000000FF);
1534 }
1535 }
1536 /* }}} */
1537
php_ifd_get_float(char * data)1538 static float php_ifd_get_float(char *data) {
1539 /* Copy to avoid alignment issues */
1540 float f;
1541 memcpy(&f, data, sizeof(float));
1542 return f;
1543 }
1544
php_ifd_get_double(char * data)1545 static double php_ifd_get_double(char *data) {
1546 /* Copy to avoid alignment issues */
1547 double f;
1548 memcpy(&f, data, sizeof(double));
1549 return f;
1550 }
1551
1552 #ifdef EXIF_DEBUG
exif_dump_data(int * dump_free,int format,int components,int length,int motorola_intel,char * value_ptr)1553 char * exif_dump_data(int *dump_free, int format, int components, int length, int motorola_intel, char *value_ptr) /* {{{ */
1554 {
1555 char *dump;
1556 int len;
1557
1558 *dump_free = 0;
1559 if (format == TAG_FMT_STRING) {
1560 return value_ptr ? value_ptr : "<no data>";
1561 }
1562 if (format == TAG_FMT_UNDEFINED) {
1563 return "<undefined>";
1564 }
1565 if (format == TAG_FMT_IFD) {
1566 return "";
1567 }
1568 if (format == TAG_FMT_SINGLE || format == TAG_FMT_DOUBLE) {
1569 return "<not implemented>";
1570 }
1571 *dump_free = 1;
1572 if (components > 1) {
1573 len = spprintf(&dump, 0, "(%d,%d) {", components, length);
1574 } else {
1575 len = spprintf(&dump, 0, "{");
1576 }
1577 while(components > 0) {
1578 switch(format) {
1579 case TAG_FMT_BYTE:
1580 case TAG_FMT_UNDEFINED:
1581 case TAG_FMT_STRING:
1582 case TAG_FMT_SBYTE:
1583 dump = erealloc(dump, len + 4 + 1);
1584 snprintf(dump + len, 4 + 1, "0x%02X", *value_ptr);
1585 len += 4;
1586 value_ptr++;
1587 break;
1588 case TAG_FMT_USHORT:
1589 case TAG_FMT_SSHORT:
1590 dump = erealloc(dump, len + 6 + 1);
1591 snprintf(dump + len, 6 + 1, "0x%04X", php_ifd_get16s(value_ptr, motorola_intel));
1592 len += 6;
1593 value_ptr += 2;
1594 break;
1595 case TAG_FMT_ULONG:
1596 case TAG_FMT_SLONG:
1597 dump = erealloc(dump, len + 6 + 1);
1598 snprintf(dump + len, 6 + 1, "0x%04X", php_ifd_get32s(value_ptr, motorola_intel));
1599 len += 6;
1600 value_ptr += 4;
1601 break;
1602 case TAG_FMT_URATIONAL:
1603 case TAG_FMT_SRATIONAL:
1604 dump = erealloc(dump, len + 13 + 1);
1605 snprintf(dump + len, 13 + 1, "0x%04X/0x%04X", php_ifd_get32s(value_ptr, motorola_intel), php_ifd_get32s(value_ptr+4, motorola_intel));
1606 len += 13;
1607 value_ptr += 8;
1608 break;
1609 }
1610 if (components > 0) {
1611 dump = erealloc(dump, len + 2 + 1);
1612 snprintf(dump + len, 2 + 1, ", ");
1613 len += 2;
1614 components--;
1615 } else{
1616 break;
1617 }
1618 }
1619 dump = erealloc(dump, len + 1 + 1);
1620 snprintf(dump + len, 1 + 1, "}");
1621 return dump;
1622 }
1623 /* }}} */
1624 #endif
1625
1626 /* {{{ exif_convert_any_format
1627 * Evaluate number, be it int, rational, or float from directory. */
exif_convert_any_format(void * value,int format,int motorola_intel)1628 static double exif_convert_any_format(void *value, int format, int motorola_intel)
1629 {
1630 int s_den;
1631 unsigned u_den;
1632
1633 switch(format) {
1634 case TAG_FMT_SBYTE: return *(signed char *)value;
1635 case TAG_FMT_BYTE: return *(uchar *)value;
1636
1637 case TAG_FMT_USHORT: return php_ifd_get16u(value, motorola_intel);
1638 case TAG_FMT_ULONG: return php_ifd_get32u(value, motorola_intel);
1639
1640 case TAG_FMT_URATIONAL:
1641 u_den = php_ifd_get32u(4+(char *)value, motorola_intel);
1642 if (u_den == 0) {
1643 return 0;
1644 } else {
1645 return (double)php_ifd_get32u(value, motorola_intel) / u_den;
1646 }
1647
1648 case TAG_FMT_SRATIONAL:
1649 s_den = php_ifd_get32s(4+(char *)value, motorola_intel);
1650 if (s_den == 0) {
1651 return 0;
1652 } else {
1653 return (double)php_ifd_get32s(value, motorola_intel) / s_den;
1654 }
1655
1656 case TAG_FMT_SSHORT: return (signed short)php_ifd_get16u(value, motorola_intel);
1657 case TAG_FMT_SLONG: return php_ifd_get32s(value, motorola_intel);
1658
1659 /* Not sure if this is correct (never seen float used in Exif format) */
1660 case TAG_FMT_SINGLE:
1661 #ifdef EXIF_DEBUG
1662 php_error_docref(NULL, E_NOTICE, "Found value of type single");
1663 #endif
1664 return (double) php_ifd_get_float(value);
1665 case TAG_FMT_DOUBLE:
1666 #ifdef EXIF_DEBUG
1667 php_error_docref(NULL, E_NOTICE, "Found value of type double");
1668 #endif
1669 return php_ifd_get_double(value);
1670 }
1671 return 0;
1672 }
1673 /* }}} */
1674
1675 /* {{{ exif_rewrite_tag_format_to_unsigned
1676 * Rewrite format tag so that it specifies an unsigned type for a tag */
exif_rewrite_tag_format_to_unsigned(int format)1677 static int exif_rewrite_tag_format_to_unsigned(int format)
1678 {
1679 switch(format) {
1680 case TAG_FMT_SBYTE: return TAG_FMT_BYTE;
1681 case TAG_FMT_SRATIONAL: return TAG_FMT_URATIONAL;
1682 case TAG_FMT_SSHORT: return TAG_FMT_USHORT;
1683 case TAG_FMT_SLONG: return TAG_FMT_ULONG;
1684 }
1685 return format;
1686 }
1687 /* }}} */
1688
1689 /* {{{ exif_convert_any_to_int
1690 * Evaluate number, be it int, rational, or float from directory. */
exif_convert_any_to_int(void * value,int format,int motorola_intel)1691 static size_t exif_convert_any_to_int(void *value, int format, int motorola_intel)
1692 {
1693 int s_den;
1694 unsigned u_den;
1695
1696 switch(format) {
1697 case TAG_FMT_SBYTE: return *(signed char *)value;
1698 case TAG_FMT_BYTE: return *(uchar *)value;
1699
1700 case TAG_FMT_USHORT: return php_ifd_get16u(value, motorola_intel);
1701 case TAG_FMT_ULONG: return php_ifd_get32u(value, motorola_intel);
1702
1703 case TAG_FMT_URATIONAL:
1704 u_den = php_ifd_get32u(4+(char *)value, motorola_intel);
1705 if (u_den == 0) {
1706 return 0;
1707 } else {
1708 return php_ifd_get32u(value, motorola_intel) / u_den;
1709 }
1710
1711 case TAG_FMT_SRATIONAL:
1712 s_den = php_ifd_get32s(4+(char *)value, motorola_intel);
1713 if (s_den == 0) {
1714 return 0;
1715 } else {
1716 return (size_t)((double)php_ifd_get32s(value, motorola_intel) / s_den);
1717 }
1718
1719 case TAG_FMT_SSHORT: return php_ifd_get16u(value, motorola_intel);
1720 case TAG_FMT_SLONG: return php_ifd_get32s(value, motorola_intel);
1721
1722 /* Not sure if this is correct (never seen float used in Exif format) */
1723 case TAG_FMT_SINGLE:
1724 #ifdef EXIF_DEBUG
1725 php_error_docref(NULL, E_NOTICE, "Found value of type single");
1726 #endif
1727 return (size_t) php_ifd_get_float(value);
1728 case TAG_FMT_DOUBLE:
1729 #ifdef EXIF_DEBUG
1730 php_error_docref(NULL, E_NOTICE, "Found value of type double");
1731 #endif
1732 return (size_t) php_ifd_get_double(value);
1733 }
1734 return 0;
1735 }
1736 /* }}} */
1737
1738 /* {{{ struct image_info_value, image_info_list
1739 */
1740 #ifndef WORD
1741 #define WORD unsigned short
1742 #endif
1743 #ifndef DWORD
1744 #define DWORD unsigned int
1745 #endif
1746
1747 typedef struct {
1748 int num;
1749 int den;
1750 } signed_rational;
1751
1752 typedef struct {
1753 unsigned int num;
1754 unsigned int den;
1755 } unsigned_rational;
1756
1757 typedef union _image_info_value {
1758 char *s;
1759 unsigned u;
1760 int i;
1761 float f;
1762 double d;
1763 signed_rational sr;
1764 unsigned_rational ur;
1765 union _image_info_value *list;
1766 } image_info_value;
1767
1768 typedef struct {
1769 WORD tag;
1770 WORD format;
1771 DWORD length;
1772 DWORD dummy; /* value ptr of tiff directory entry */
1773 char *name;
1774 image_info_value value;
1775 } image_info_data;
1776
1777 typedef struct {
1778 int count;
1779 image_info_data *list;
1780 } image_info_list;
1781 /* }}} */
1782
1783 /* {{{ exif_get_sectionname
1784 Returns the name of a section
1785 */
1786 #define SECTION_FILE 0
1787 #define SECTION_COMPUTED 1
1788 #define SECTION_ANY_TAG 2
1789 #define SECTION_IFD0 3
1790 #define SECTION_THUMBNAIL 4
1791 #define SECTION_COMMENT 5
1792 #define SECTION_APP0 6
1793 #define SECTION_EXIF 7
1794 #define SECTION_FPIX 8
1795 #define SECTION_GPS 9
1796 #define SECTION_INTEROP 10
1797 #define SECTION_APP12 11
1798 #define SECTION_WINXP 12
1799 #define SECTION_MAKERNOTE 13
1800 #define SECTION_COUNT 14
1801
1802 #define FOUND_FILE (1<<SECTION_FILE)
1803 #define FOUND_COMPUTED (1<<SECTION_COMPUTED)
1804 #define FOUND_ANY_TAG (1<<SECTION_ANY_TAG)
1805 #define FOUND_IFD0 (1<<SECTION_IFD0)
1806 #define FOUND_THUMBNAIL (1<<SECTION_THUMBNAIL)
1807 #define FOUND_COMMENT (1<<SECTION_COMMENT)
1808 #define FOUND_APP0 (1<<SECTION_APP0)
1809 #define FOUND_EXIF (1<<SECTION_EXIF)
1810 #define FOUND_FPIX (1<<SECTION_FPIX)
1811 #define FOUND_GPS (1<<SECTION_GPS)
1812 #define FOUND_INTEROP (1<<SECTION_INTEROP)
1813 #define FOUND_APP12 (1<<SECTION_APP12)
1814 #define FOUND_WINXP (1<<SECTION_WINXP)
1815 #define FOUND_MAKERNOTE (1<<SECTION_MAKERNOTE)
1816
exif_get_sectionname(int section)1817 static char *exif_get_sectionname(int section)
1818 {
1819 switch(section) {
1820 case SECTION_FILE: return "FILE";
1821 case SECTION_COMPUTED: return "COMPUTED";
1822 case SECTION_ANY_TAG: return "ANY_TAG";
1823 case SECTION_IFD0: return "IFD0";
1824 case SECTION_THUMBNAIL: return "THUMBNAIL";
1825 case SECTION_COMMENT: return "COMMENT";
1826 case SECTION_APP0: return "APP0";
1827 case SECTION_EXIF: return "EXIF";
1828 case SECTION_FPIX: return "FPIX";
1829 case SECTION_GPS: return "GPS";
1830 case SECTION_INTEROP: return "INTEROP";
1831 case SECTION_APP12: return "APP12";
1832 case SECTION_WINXP: return "WINXP";
1833 case SECTION_MAKERNOTE: return "MAKERNOTE";
1834 }
1835 return "";
1836 }
1837
exif_get_tag_table(int section)1838 static tag_table_type exif_get_tag_table(int section)
1839 {
1840 switch(section) {
1841 case SECTION_FILE: return &tag_table_IFD[0];
1842 case SECTION_COMPUTED: return &tag_table_IFD[0];
1843 case SECTION_ANY_TAG: return &tag_table_IFD[0];
1844 case SECTION_IFD0: return &tag_table_IFD[0];
1845 case SECTION_THUMBNAIL: return &tag_table_IFD[0];
1846 case SECTION_COMMENT: return &tag_table_IFD[0];
1847 case SECTION_APP0: return &tag_table_IFD[0];
1848 case SECTION_EXIF: return &tag_table_IFD[0];
1849 case SECTION_FPIX: return &tag_table_IFD[0];
1850 case SECTION_GPS: return &tag_table_GPS[0];
1851 case SECTION_INTEROP: return &tag_table_IOP[0];
1852 case SECTION_APP12: return &tag_table_IFD[0];
1853 case SECTION_WINXP: return &tag_table_IFD[0];
1854 }
1855 return &tag_table_IFD[0];
1856 }
1857 /* }}} */
1858
1859 /* {{{ exif_get_sectionlist
1860 Return list of sectionnames specified by sectionlist. Return value must be freed
1861 */
exif_get_sectionlist(int sectionlist)1862 static char *exif_get_sectionlist(int sectionlist)
1863 {
1864 int i, len, ml = 0;
1865 char *sections;
1866
1867 for(i=0; i<SECTION_COUNT; i++) {
1868 ml += strlen(exif_get_sectionname(i))+2;
1869 }
1870 sections = safe_emalloc(ml, 1, 1);
1871 sections[0] = '\0';
1872 len = 0;
1873 for(i=0; i<SECTION_COUNT; i++) {
1874 if (sectionlist&(1<<i)) {
1875 snprintf(sections+len, ml-len, "%s, ", exif_get_sectionname(i));
1876 len = strlen(sections);
1877 }
1878 }
1879 if (len>2)
1880 sections[len-2] = '\0';
1881 return sections;
1882 }
1883 /* }}} */
1884
1885 /* {{{ struct image_info_type
1886 This structure stores Exif header image elements in a simple manner
1887 Used to store camera data as extracted from the various ways that it can be
1888 stored in a nexif header
1889 */
1890
1891 typedef struct {
1892 int type;
1893 size_t size;
1894 uchar *data;
1895 } file_section;
1896
1897 typedef struct {
1898 int count;
1899 file_section *list;
1900 } file_section_list;
1901
1902 typedef struct {
1903 image_filetype filetype;
1904 size_t width, height;
1905 size_t size;
1906 size_t offset;
1907 char *data;
1908 } thumbnail_data;
1909
1910 typedef struct {
1911 char *value;
1912 size_t size;
1913 int tag;
1914 } xp_field_type;
1915
1916 typedef struct {
1917 int count;
1918 xp_field_type *list;
1919 } xp_field_list;
1920
1921 /* This structure is used to store a section of a Jpeg file. */
1922 typedef struct {
1923 php_stream *infile;
1924 char *FileName;
1925 time_t FileDateTime;
1926 size_t FileSize;
1927 image_filetype FileType;
1928 int Height, Width;
1929 int IsColor;
1930
1931 char *make;
1932 char *model;
1933
1934 float ApertureFNumber;
1935 float ExposureTime;
1936 double FocalplaneUnits;
1937 float CCDWidth;
1938 double FocalplaneXRes;
1939 size_t ExifImageWidth;
1940 float FocalLength;
1941 float Distance;
1942
1943 int motorola_intel; /* 1 Motorola; 0 Intel */
1944
1945 char *UserComment;
1946 int UserCommentLength;
1947 char *UserCommentEncoding;
1948 char *encode_unicode;
1949 char *decode_unicode_be;
1950 char *decode_unicode_le;
1951 char *encode_jis;
1952 char *decode_jis_be;
1953 char *decode_jis_le;
1954 char *Copyright;/* EXIF standard defines Copyright as "<Photographer> [ '\0' <Editor> ] ['\0']" */
1955 char *CopyrightPhotographer;
1956 char *CopyrightEditor;
1957
1958 xp_field_list xp_fields;
1959
1960 thumbnail_data Thumbnail;
1961 /* other */
1962 int sections_found; /* FOUND_<marker> */
1963 image_info_list info_list[SECTION_COUNT];
1964 /* for parsing */
1965 int read_thumbnail;
1966 int read_all;
1967 int ifd_nesting_level;
1968 /* internal */
1969 file_section_list file;
1970 } image_info_type;
1971 /* }}} */
1972
1973 /* {{{ exif_error_docref */
exif_error_docref(const char * docref EXIFERR_DC,const image_info_type * ImageInfo,int type,const char * format,...)1974 static void exif_error_docref(const char *docref EXIFERR_DC, const image_info_type *ImageInfo, int type, const char *format, ...)
1975 {
1976 va_list args;
1977
1978 va_start(args, format);
1979 #ifdef EXIF_DEBUG
1980 {
1981 char *buf;
1982
1983 spprintf(&buf, 0, "%s(%d): %s", _file, _line, format);
1984 php_verror(docref, ImageInfo && ImageInfo->FileName ? ImageInfo->FileName:"", type, buf, args);
1985 efree(buf);
1986 }
1987 #else
1988 php_verror(docref, ImageInfo && ImageInfo->FileName ? ImageInfo->FileName:"", type, format, args);
1989 #endif
1990 va_end(args);
1991 }
1992 /* }}} */
1993
1994 /* {{{ jpeg_sof_info
1995 */
1996 typedef struct {
1997 int bits_per_sample;
1998 size_t width;
1999 size_t height;
2000 int num_components;
2001 } jpeg_sof_info;
2002 /* }}} */
2003
2004 /* {{{ exif_file_sections_add
2005 Add a file_section to image_info
2006 returns the used block or -1. if size>0 and data == NULL buffer of size is allocated
2007 */
exif_file_sections_add(image_info_type * ImageInfo,int type,size_t size,uchar * data)2008 static int exif_file_sections_add(image_info_type *ImageInfo, int type, size_t size, uchar *data)
2009 {
2010 file_section *tmp;
2011 int count = ImageInfo->file.count;
2012
2013 tmp = safe_erealloc(ImageInfo->file.list, (count+1), sizeof(file_section), 0);
2014 ImageInfo->file.list = tmp;
2015 ImageInfo->file.list[count].type = 0xFFFF;
2016 ImageInfo->file.list[count].data = NULL;
2017 ImageInfo->file.list[count].size = 0;
2018 ImageInfo->file.count = count+1;
2019 if (!size) {
2020 data = NULL;
2021 } else if (data == NULL) {
2022 data = safe_emalloc(size, 1, 0);
2023 }
2024 ImageInfo->file.list[count].type = type;
2025 ImageInfo->file.list[count].data = data;
2026 ImageInfo->file.list[count].size = size;
2027 return count;
2028 }
2029 /* }}} */
2030
2031 /* {{{ exif_file_sections_realloc
2032 Reallocate a file section returns 0 on success and -1 on failure
2033 */
exif_file_sections_realloc(image_info_type * ImageInfo,int section_index,size_t size)2034 static int exif_file_sections_realloc(image_info_type *ImageInfo, int section_index, size_t size)
2035 {
2036 void *tmp;
2037
2038 /* This is not a malloc/realloc check. It is a plausibility check for the
2039 * function parameters (requirements engineering).
2040 */
2041 if (section_index >= ImageInfo->file.count) {
2042 EXIF_ERRLOG_FSREALLOC(ImageInfo)
2043 return -1;
2044 }
2045 tmp = safe_erealloc(ImageInfo->file.list[section_index].data, 1, size, 0);
2046 ImageInfo->file.list[section_index].data = tmp;
2047 ImageInfo->file.list[section_index].size = size;
2048 return 0;
2049 }
2050 /* }}} */
2051
2052 /* {{{ exif_file_section_free
2053 Discard all file_sections in ImageInfo
2054 */
exif_file_sections_free(image_info_type * ImageInfo)2055 static int exif_file_sections_free(image_info_type *ImageInfo)
2056 {
2057 int i;
2058
2059 if (ImageInfo->file.count) {
2060 for (i=0; i<ImageInfo->file.count; i++) {
2061 EFREE_IF(ImageInfo->file.list[i].data);
2062 }
2063 }
2064 EFREE_IF(ImageInfo->file.list);
2065 ImageInfo->file.count = 0;
2066 return TRUE;
2067 }
2068 /* }}} */
2069
2070 /* {{{ exif_iif_add_value
2071 Add a value to image_info
2072 */
exif_iif_add_value(image_info_type * image_info,int section_index,char * name,int tag,int format,int length,void * value,size_t value_len,int motorola_intel)2073 static void exif_iif_add_value(image_info_type *image_info, int section_index, char *name, int tag, int format, int length, void* value, size_t value_len, int motorola_intel)
2074 {
2075 size_t idex;
2076 void *vptr, *vptr_end;
2077 image_info_value *info_value;
2078 image_info_data *info_data;
2079 image_info_data *list;
2080
2081 if (length < 0) {
2082 return;
2083 }
2084
2085 list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
2086 image_info->info_list[section_index].list = list;
2087
2088 info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
2089 memset(info_data, 0, sizeof(image_info_data));
2090 info_data->tag = tag;
2091 info_data->format = format;
2092 info_data->length = length;
2093 info_data->name = estrdup(name);
2094 info_value = &info_data->value;
2095
2096 switch (format) {
2097 case TAG_FMT_STRING:
2098 if (length > value_len) {
2099 exif_error_docref("exif_iif_add_value" EXIFERR_CC, image_info, E_WARNING, "length > value_len: %d > %zu", length, value_len);
2100 value = NULL;
2101 }
2102 if (value) {
2103 length = (int)php_strnlen(value, length);
2104 info_value->s = estrndup(value, length);
2105 info_data->length = length;
2106 } else {
2107 info_data->length = 0;
2108 info_value->s = estrdup("");
2109 }
2110 break;
2111
2112 default:
2113 /* Standard says more types possible but skip them...
2114 * but allow users to handle data if they know how to
2115 * So not return but use type UNDEFINED
2116 * return;
2117 */
2118 info_data->tag = TAG_FMT_UNDEFINED;/* otherwise not freed from memory */
2119 case TAG_FMT_SBYTE:
2120 case TAG_FMT_BYTE:
2121 /* in contrast to strings bytes do not need to allocate buffer for NULL if length==0 */
2122 if (!length)
2123 break;
2124 case TAG_FMT_UNDEFINED:
2125 if (length > value_len) {
2126 exif_error_docref("exif_iif_add_value" EXIFERR_CC, image_info, E_WARNING, "length > value_len: %d > %zu", length, value_len);
2127 value = NULL;
2128 }
2129 if (value) {
2130 if (tag == TAG_MAKER_NOTE) {
2131 length = (int) php_strnlen(value, length);
2132 }
2133
2134 /* do not recompute length here */
2135 info_value->s = estrndup(value, length);
2136 info_data->length = length;
2137 } else {
2138 info_data->length = 0;
2139 info_value->s = estrdup("");
2140 }
2141 break;
2142
2143 case TAG_FMT_USHORT:
2144 case TAG_FMT_ULONG:
2145 case TAG_FMT_URATIONAL:
2146 case TAG_FMT_SSHORT:
2147 case TAG_FMT_SLONG:
2148 case TAG_FMT_SRATIONAL:
2149 case TAG_FMT_SINGLE:
2150 case TAG_FMT_DOUBLE:
2151 if (length==0) {
2152 break;
2153 } else
2154 if (length>1) {
2155 info_value->list = safe_emalloc(length, sizeof(image_info_value), 0);
2156 } else {
2157 info_value = &info_data->value;
2158 }
2159 vptr_end = (char *) value + value_len;
2160 for (idex=0,vptr=value; idex<(size_t)length; idex++,vptr=(char *) vptr + php_tiff_bytes_per_format[format]) {
2161 if ((char *) vptr_end - (char *) vptr < php_tiff_bytes_per_format[format]) {
2162 exif_error_docref("exif_iif_add_value" EXIFERR_CC, image_info, E_WARNING, "Value too short");
2163 break;
2164 }
2165 if (length>1) {
2166 info_value = &info_data->value.list[idex];
2167 }
2168 switch (format) {
2169 case TAG_FMT_USHORT:
2170 info_value->u = php_ifd_get16u(vptr, motorola_intel);
2171 break;
2172
2173 case TAG_FMT_ULONG:
2174 info_value->u = php_ifd_get32u(vptr, motorola_intel);
2175 break;
2176
2177 case TAG_FMT_URATIONAL:
2178 info_value->ur.num = php_ifd_get32u(vptr, motorola_intel);
2179 info_value->ur.den = php_ifd_get32u(4+(char *)vptr, motorola_intel);
2180 break;
2181
2182 case TAG_FMT_SSHORT:
2183 info_value->i = php_ifd_get16s(vptr, motorola_intel);
2184 break;
2185
2186 case TAG_FMT_SLONG:
2187 info_value->i = php_ifd_get32s(vptr, motorola_intel);
2188 break;
2189
2190 case TAG_FMT_SRATIONAL:
2191 info_value->sr.num = php_ifd_get32u(vptr, motorola_intel);
2192 info_value->sr.den = php_ifd_get32u(4+(char *)vptr, motorola_intel);
2193 break;
2194
2195 case TAG_FMT_SINGLE:
2196 #ifdef EXIF_DEBUG
2197 php_error_docref(NULL, E_WARNING, "Found value of type single");
2198 #endif
2199 info_value->f = php_ifd_get_float(value);
2200 break;
2201 case TAG_FMT_DOUBLE:
2202 #ifdef EXIF_DEBUG
2203 php_error_docref(NULL, E_WARNING, "Found value of type double");
2204 #endif
2205 info_value->d = php_ifd_get_double(value);
2206 break;
2207 }
2208 }
2209 }
2210 image_info->sections_found |= 1<<section_index;
2211 image_info->info_list[section_index].count++;
2212 }
2213 /* }}} */
2214
2215 /* {{{ exif_iif_add_tag
2216 Add a tag from IFD to image_info
2217 */
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)2218 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)
2219 {
2220 exif_iif_add_value(image_info, section_index, name, tag, format, (int)length, value, value_len, image_info->motorola_intel);
2221 }
2222 /* }}} */
2223
2224 /* {{{ exif_iif_add_int
2225 Add an int value to image_info
2226 */
exif_iif_add_int(image_info_type * image_info,int section_index,char * name,int value)2227 static void exif_iif_add_int(image_info_type *image_info, int section_index, char *name, int value)
2228 {
2229 image_info_data *info_data;
2230 image_info_data *list;
2231
2232 list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
2233 image_info->info_list[section_index].list = list;
2234
2235 info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
2236 info_data->tag = TAG_NONE;
2237 info_data->format = TAG_FMT_SLONG;
2238 info_data->length = 1;
2239 info_data->name = estrdup(name);
2240 info_data->value.i = value;
2241 image_info->sections_found |= 1<<section_index;
2242 image_info->info_list[section_index].count++;
2243 }
2244 /* }}} */
2245
2246 /* {{{ exif_iif_add_str
2247 Add a string value to image_info MUST BE NUL TERMINATED
2248 */
exif_iif_add_str(image_info_type * image_info,int section_index,char * name,char * value)2249 static void exif_iif_add_str(image_info_type *image_info, int section_index, char *name, char *value)
2250 {
2251 image_info_data *info_data;
2252 image_info_data *list;
2253
2254 if (value) {
2255 list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
2256 image_info->info_list[section_index].list = list;
2257 info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
2258 info_data->tag = TAG_NONE;
2259 info_data->format = TAG_FMT_STRING;
2260 info_data->length = 1;
2261 info_data->name = estrdup(name);
2262 info_data->value.s = estrdup(value);
2263 image_info->sections_found |= 1<<section_index;
2264 image_info->info_list[section_index].count++;
2265 }
2266 }
2267 /* }}} */
2268
2269 /* {{{ exif_iif_add_fmt
2270 Add a format string value to image_info MUST BE NUL TERMINATED
2271 */
exif_iif_add_fmt(image_info_type * image_info,int section_index,char * name,char * value,...)2272 static void exif_iif_add_fmt(image_info_type *image_info, int section_index, char *name, char *value, ...)
2273 {
2274 char *tmp;
2275 va_list arglist;
2276
2277 va_start(arglist, value);
2278 if (value) {
2279 vspprintf(&tmp, 0, value, arglist);
2280 exif_iif_add_str(image_info, section_index, name, tmp);
2281 efree(tmp);
2282 }
2283 va_end(arglist);
2284 }
2285 /* }}} */
2286
2287 /* {{{ exif_iif_add_str
2288 Add a string value to image_info MUST BE NUL TERMINATED
2289 */
exif_iif_add_buffer(image_info_type * image_info,int section_index,char * name,int length,char * value)2290 static void exif_iif_add_buffer(image_info_type *image_info, int section_index, char *name, int length, char *value)
2291 {
2292 image_info_data *info_data;
2293 image_info_data *list;
2294
2295 if (value) {
2296 list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
2297 image_info->info_list[section_index].list = list;
2298 info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
2299 info_data->tag = TAG_NONE;
2300 info_data->format = TAG_FMT_UNDEFINED;
2301 info_data->length = length;
2302 info_data->name = estrdup(name);
2303 info_data->value.s = safe_emalloc(length, 1, 1);
2304 memcpy(info_data->value.s, value, length);
2305 info_data->value.s[length] = 0;
2306 image_info->sections_found |= 1<<section_index;
2307 image_info->info_list[section_index].count++;
2308 }
2309 }
2310 /* }}} */
2311
2312 /* {{{ exif_iif_free
2313 Free memory allocated for image_info
2314 */
exif_iif_free(image_info_type * image_info,int section_index)2315 static void exif_iif_free(image_info_type *image_info, int section_index) {
2316 int i;
2317 void *f; /* faster */
2318
2319 if (image_info->info_list[section_index].count) {
2320 for (i=0; i < image_info->info_list[section_index].count; i++) {
2321 if ((f=image_info->info_list[section_index].list[i].name) != NULL) {
2322 efree(f);
2323 }
2324 switch(image_info->info_list[section_index].list[i].format) {
2325 case TAG_FMT_UNDEFINED:
2326 case TAG_FMT_STRING:
2327 case TAG_FMT_SBYTE:
2328 case TAG_FMT_BYTE:
2329 default:
2330 if ((f=image_info->info_list[section_index].list[i].value.s) != NULL) {
2331 efree(f);
2332 }
2333 break;
2334
2335 case TAG_FMT_USHORT:
2336 case TAG_FMT_ULONG:
2337 case TAG_FMT_URATIONAL:
2338 case TAG_FMT_SSHORT:
2339 case TAG_FMT_SLONG:
2340 case TAG_FMT_SRATIONAL:
2341 case TAG_FMT_SINGLE:
2342 case TAG_FMT_DOUBLE:
2343 /* nothing to do here */
2344 if (image_info->info_list[section_index].list[i].length > 1) {
2345 if ((f=image_info->info_list[section_index].list[i].value.list) != NULL) {
2346 efree(f);
2347 }
2348 }
2349 break;
2350 }
2351 }
2352 }
2353 EFREE_IF(image_info->info_list[section_index].list);
2354 }
2355 /* }}} */
2356
2357 /* {{{ add_assoc_image_info
2358 * Add image_info to associative array value. */
add_assoc_image_info(zval * value,int sub_array,image_info_type * image_info,int section_index)2359 static void add_assoc_image_info(zval *value, int sub_array, image_info_type *image_info, int section_index)
2360 {
2361 char buffer[64], *val, *name, uname[64];
2362 int i, ap, l, b, idx=0, unknown=0;
2363 #ifdef EXIF_DEBUG
2364 int info_tag;
2365 #endif
2366 image_info_value *info_value;
2367 image_info_data *info_data;
2368 zval tmpi, array;
2369
2370 #ifdef EXIF_DEBUG
2371 /* php_error_docref(NULL, E_NOTICE, "Adding %d infos from section %s", image_info->info_list[section_index].count, exif_get_sectionname(section_index));*/
2372 #endif
2373 if (image_info->info_list[section_index].count) {
2374 if (sub_array) {
2375 array_init(&tmpi);
2376 } else {
2377 ZVAL_COPY_VALUE(&tmpi, value);
2378 }
2379
2380 for(i=0; i<image_info->info_list[section_index].count; i++) {
2381 info_data = &image_info->info_list[section_index].list[i];
2382 #ifdef EXIF_DEBUG
2383 info_tag = info_data->tag; /* conversion */
2384 #endif
2385 info_value = &info_data->value;
2386 if (!(name = info_data->name)) {
2387 snprintf(uname, sizeof(uname), "%d", unknown++);
2388 name = uname;
2389 }
2390 #ifdef EXIF_DEBUG
2391 /* php_error_docref(NULL, E_NOTICE, "Adding infos: tag(0x%04X,%12s,L=0x%04X): %s", info_tag, exif_get_tagname(info_tag, buffer, -12, exif_get_tag_table(section_index)), info_data->length, info_data->format==TAG_FMT_STRING?(info_value&&info_value->s?info_value->s:"<no data>"):exif_get_tagformat(info_data->format));*/
2392 #endif
2393 if (info_data->length==0) {
2394 add_assoc_null(&tmpi, name);
2395 } else {
2396 switch (info_data->format) {
2397 default:
2398 /* Standard says more types possible but skip them...
2399 * but allow users to handle data if they know how to
2400 * So not return but use type UNDEFINED
2401 * return;
2402 */
2403 case TAG_FMT_BYTE:
2404 case TAG_FMT_SBYTE:
2405 case TAG_FMT_UNDEFINED:
2406 if (!info_value->s) {
2407 add_assoc_stringl(&tmpi, name, "", 0);
2408 } else {
2409 add_assoc_stringl(&tmpi, name, info_value->s, info_data->length);
2410 }
2411 break;
2412
2413 case TAG_FMT_STRING:
2414 if (!(val = info_value->s)) {
2415 val = "";
2416 }
2417 if (section_index==SECTION_COMMENT) {
2418 add_index_string(&tmpi, idx++, val);
2419 } else {
2420 add_assoc_string(&tmpi, name, val);
2421 }
2422 break;
2423
2424 case TAG_FMT_URATIONAL:
2425 case TAG_FMT_SRATIONAL:
2426 /*case TAG_FMT_BYTE:
2427 case TAG_FMT_SBYTE:*/
2428 case TAG_FMT_USHORT:
2429 case TAG_FMT_SSHORT:
2430 case TAG_FMT_SINGLE:
2431 case TAG_FMT_DOUBLE:
2432 case TAG_FMT_ULONG:
2433 case TAG_FMT_SLONG:
2434 /* now the rest, first see if it becomes an array */
2435 if ((l = info_data->length) > 1) {
2436 array_init(&array);
2437 }
2438 for(ap=0; ap<l; ap++) {
2439 if (l>1) {
2440 info_value = &info_data->value.list[ap];
2441 }
2442 switch (info_data->format) {
2443 case TAG_FMT_BYTE:
2444 if (l>1) {
2445 info_value = &info_data->value;
2446 for (b=0;b<l;b++) {
2447 add_index_long(&array, b, (int)(info_value->s[b]));
2448 }
2449 break;
2450 }
2451 case TAG_FMT_USHORT:
2452 case TAG_FMT_ULONG:
2453 if (l==1) {
2454 add_assoc_long(&tmpi, name, (int)info_value->u);
2455 } else {
2456 add_index_long(&array, ap, (int)info_value->u);
2457 }
2458 break;
2459
2460 case TAG_FMT_URATIONAL:
2461 snprintf(buffer, sizeof(buffer), "%u/%u", info_value->ur.num, info_value->ur.den);
2462 if (l==1) {
2463 add_assoc_string(&tmpi, name, buffer);
2464 } else {
2465 add_index_string(&array, ap, buffer);
2466 }
2467 break;
2468
2469 case TAG_FMT_SBYTE:
2470 if (l>1) {
2471 info_value = &info_data->value;
2472 for (b=0;b<l;b++) {
2473 add_index_long(&array, ap, (int)info_value->s[b]);
2474 }
2475 break;
2476 }
2477 case TAG_FMT_SSHORT:
2478 case TAG_FMT_SLONG:
2479 if (l==1) {
2480 add_assoc_long(&tmpi, name, info_value->i);
2481 } else {
2482 add_index_long(&array, ap, info_value->i);
2483 }
2484 break;
2485
2486 case TAG_FMT_SRATIONAL:
2487 snprintf(buffer, sizeof(buffer), "%i/%i", info_value->sr.num, info_value->sr.den);
2488 if (l==1) {
2489 add_assoc_string(&tmpi, name, buffer);
2490 } else {
2491 add_index_string(&array, ap, buffer);
2492 }
2493 break;
2494
2495 case TAG_FMT_SINGLE:
2496 if (l==1) {
2497 add_assoc_double(&tmpi, name, info_value->f);
2498 } else {
2499 add_index_double(&array, ap, info_value->f);
2500 }
2501 break;
2502
2503 case TAG_FMT_DOUBLE:
2504 if (l==1) {
2505 add_assoc_double(&tmpi, name, info_value->d);
2506 } else {
2507 add_index_double(&array, ap, info_value->d);
2508 }
2509 break;
2510 }
2511 info_value = &info_data->value.list[ap];
2512 }
2513 if (l>1) {
2514 add_assoc_zval(&tmpi, name, &array);
2515 }
2516 break;
2517 }
2518 }
2519 }
2520 if (sub_array) {
2521 add_assoc_zval(value, exif_get_sectionname(section_index), &tmpi);
2522 }
2523 }
2524 }
2525 /* }}} */
2526
2527 /* {{{ Markers
2528 JPEG markers consist of one or more 0xFF bytes, followed by a marker
2529 code byte (which is not an FF). Here are the marker codes of interest
2530 in this program. (See jdmarker.c for a more complete list.)
2531 */
2532
2533 #define M_TEM 0x01 /* temp for arithmetic coding */
2534 #define M_RES 0x02 /* reserved */
2535 #define M_SOF0 0xC0 /* Start Of Frame N */
2536 #define M_SOF1 0xC1 /* N indicates which compression process */
2537 #define M_SOF2 0xC2 /* Only SOF0-SOF2 are now in common use */
2538 #define M_SOF3 0xC3
2539 #define M_DHT 0xC4
2540 #define M_SOF5 0xC5 /* NB: codes C4 and CC are NOT SOF markers */
2541 #define M_SOF6 0xC6
2542 #define M_SOF7 0xC7
2543 #define M_JPEG 0x08 /* reserved for extensions */
2544 #define M_SOF9 0xC9
2545 #define M_SOF10 0xCA
2546 #define M_SOF11 0xCB
2547 #define M_DAC 0xCC /* arithmetic table */
2548 #define M_SOF13 0xCD
2549 #define M_SOF14 0xCE
2550 #define M_SOF15 0xCF
2551 #define M_RST0 0xD0 /* restart segment */
2552 #define M_RST1 0xD1
2553 #define M_RST2 0xD2
2554 #define M_RST3 0xD3
2555 #define M_RST4 0xD4
2556 #define M_RST5 0xD5
2557 #define M_RST6 0xD6
2558 #define M_RST7 0xD7
2559 #define M_SOI 0xD8 /* Start Of Image (beginning of datastream) */
2560 #define M_EOI 0xD9 /* End Of Image (end of datastream) */
2561 #define M_SOS 0xDA /* Start Of Scan (begins compressed data) */
2562 #define M_DQT 0xDB
2563 #define M_DNL 0xDC
2564 #define M_DRI 0xDD
2565 #define M_DHP 0xDE
2566 #define M_EXP 0xDF
2567 #define M_APP0 0xE0 /* JPEG: 'JFIFF' AND (additional 'JFXX') */
2568 #define M_EXIF 0xE1 /* Exif Attribute Information */
2569 #define M_APP2 0xE2 /* Flash Pix Extension Data? */
2570 #define M_APP3 0xE3
2571 #define M_APP4 0xE4
2572 #define M_APP5 0xE5
2573 #define M_APP6 0xE6
2574 #define M_APP7 0xE7
2575 #define M_APP8 0xE8
2576 #define M_APP9 0xE9
2577 #define M_APP10 0xEA
2578 #define M_APP11 0xEB
2579 #define M_APP12 0xEC
2580 #define M_APP13 0xED /* IPTC International Press Telecommunications Council */
2581 #define M_APP14 0xEE /* Software, Copyright? */
2582 #define M_APP15 0xEF
2583 #define M_JPG0 0xF0
2584 #define M_JPG1 0xF1
2585 #define M_JPG2 0xF2
2586 #define M_JPG3 0xF3
2587 #define M_JPG4 0xF4
2588 #define M_JPG5 0xF5
2589 #define M_JPG6 0xF6
2590 #define M_JPG7 0xF7
2591 #define M_JPG8 0xF8
2592 #define M_JPG9 0xF9
2593 #define M_JPG10 0xFA
2594 #define M_JPG11 0xFB
2595 #define M_JPG12 0xFC
2596 #define M_JPG13 0xFD
2597 #define M_COM 0xFE /* COMment */
2598
2599 #define M_PSEUDO 0x123 /* Extra value. */
2600
2601 /* }}} */
2602
2603 /* {{{ jpeg2000 markers
2604 */
2605 /* Markers x30 - x3F do not have a segment */
2606 /* Markers x00, x01, xFE, xC0 - xDF ISO/IEC 10918-1 -> M_<xx> */
2607 /* Markers xF0 - xF7 ISO/IEC 10918-3 */
2608 /* Markers xF7 - xF8 ISO/IEC 14495-1 */
2609 /* XY=Main/Tile-header:(R:required, N:not_allowed, O:optional, L:last_marker) */
2610 #define JC_SOC 0x4F /* NN, Start of codestream */
2611 #define JC_SIZ 0x51 /* RN, Image and tile size */
2612 #define JC_COD 0x52 /* RO, Codeing style defaulte */
2613 #define JC_COC 0x53 /* OO, Coding style component */
2614 #define JC_TLM 0x55 /* ON, Tile part length main header */
2615 #define JC_PLM 0x57 /* ON, Packet length main header */
2616 #define JC_PLT 0x58 /* NO, Packet length tile part header */
2617 #define JC_QCD 0x5C /* RO, Quantization default */
2618 #define JC_QCC 0x5D /* OO, Quantization component */
2619 #define JC_RGN 0x5E /* OO, Region of interest */
2620 #define JC_POD 0x5F /* OO, Progression order default */
2621 #define JC_PPM 0x60 /* ON, Packed packet headers main header */
2622 #define JC_PPT 0x61 /* NO, Packet packet headers tile part header */
2623 #define JC_CME 0x64 /* OO, Comment: "LL E <text>" E=0:binary, E=1:ascii */
2624 #define JC_SOT 0x90 /* NR, Start of tile */
2625 #define JC_SOP 0x91 /* NO, Start of packeter default */
2626 #define JC_EPH 0x92 /* NO, End of packet header */
2627 #define JC_SOD 0x93 /* NL, Start of data */
2628 #define JC_EOC 0xD9 /* NN, End of codestream */
2629 /* }}} */
2630
2631 /* {{{ exif_process_COM
2632 Process a COM marker.
2633 We want to print out the marker contents as legible text;
2634 we must guard against random junk and varying newline representations.
2635 */
exif_process_COM(image_info_type * image_info,char * value,size_t length)2636 static void exif_process_COM (image_info_type *image_info, char *value, size_t length)
2637 {
2638 exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length-2, value+2, length-2);
2639 }
2640 /* }}} */
2641
2642 /* {{{ exif_process_CME
2643 Process a CME marker.
2644 We want to print out the marker contents as legible text;
2645 we must guard against random junk and varying newline representations.
2646 */
2647 #ifdef EXIF_JPEG2000
exif_process_CME(image_info_type * image_info,char * value,size_t length)2648 static void exif_process_CME (image_info_type *image_info, char *value, size_t length)
2649 {
2650 if (length>3) {
2651 switch(value[2]) {
2652 case 0:
2653 exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, length, value, length);
2654 break;
2655 case 1:
2656 exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length, value, length);
2657 break;
2658 default:
2659 php_error_docref(NULL, E_NOTICE, "Undefined JPEG2000 comment encoding");
2660 break;
2661 }
2662 } else {
2663 exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, 0, NULL, 0);
2664 php_error_docref(NULL, E_NOTICE, "JPEG2000 comment section too small");
2665 }
2666 }
2667 #endif
2668 /* }}} */
2669
2670 /* {{{ exif_process_SOFn
2671 * Process a SOFn marker. This is useful for the image dimensions */
exif_process_SOFn(uchar * Data,int marker,jpeg_sof_info * result)2672 static void exif_process_SOFn (uchar *Data, int marker, jpeg_sof_info *result)
2673 {
2674 /* 0xFF SOSn SectLen(2) Bits(1) Height(2) Width(2) Channels(1) 3*Channels (1) */
2675 result->bits_per_sample = Data[2];
2676 result->height = php_jpg_get16(Data+3);
2677 result->width = php_jpg_get16(Data+5);
2678 result->num_components = Data[7];
2679
2680 /* switch (marker) {
2681 case M_SOF0: process = "Baseline"; break;
2682 case M_SOF1: process = "Extended sequential"; break;
2683 case M_SOF2: process = "Progressive"; break;
2684 case M_SOF3: process = "Lossless"; break;
2685 case M_SOF5: process = "Differential sequential"; break;
2686 case M_SOF6: process = "Differential progressive"; break;
2687 case M_SOF7: process = "Differential lossless"; break;
2688 case M_SOF9: process = "Extended sequential, arithmetic coding"; break;
2689 case M_SOF10: process = "Progressive, arithmetic coding"; break;
2690 case M_SOF11: process = "Lossless, arithmetic coding"; break;
2691 case M_SOF13: process = "Differential sequential, arithmetic coding"; break;
2692 case M_SOF14: process = "Differential progressive, arithmetic coding"; break;
2693 case M_SOF15: process = "Differential lossless, arithmetic coding"; break;
2694 default: process = "Unknown"; break;
2695 }*/
2696 }
2697 /* }}} */
2698
2699 /* forward declarations */
2700 static int exif_process_IFD_in_JPEG(image_info_type *ImageInfo, char *dir_start, char *offset_base, size_t IFDlength, size_t displacement, int section_index, int tag);
2701 static int exif_process_IFD_TAG( image_info_type *ImageInfo, char *dir_entry, char *offset_base, size_t IFDlength, size_t displacement, int section_index, int ReadNextIFD, tag_table_type tag_table);
2702
2703 /* {{{ exif_get_markername
2704 Get name of marker */
2705 #ifdef EXIF_DEBUG
exif_get_markername(int marker)2706 static char * exif_get_markername(int marker)
2707 {
2708 switch(marker) {
2709 case 0xC0: return "SOF0";
2710 case 0xC1: return "SOF1";
2711 case 0xC2: return "SOF2";
2712 case 0xC3: return "SOF3";
2713 case 0xC4: return "DHT";
2714 case 0xC5: return "SOF5";
2715 case 0xC6: return "SOF6";
2716 case 0xC7: return "SOF7";
2717 case 0xC9: return "SOF9";
2718 case 0xCA: return "SOF10";
2719 case 0xCB: return "SOF11";
2720 case 0xCD: return "SOF13";
2721 case 0xCE: return "SOF14";
2722 case 0xCF: return "SOF15";
2723 case 0xD8: return "SOI";
2724 case 0xD9: return "EOI";
2725 case 0xDA: return "SOS";
2726 case 0xDB: return "DQT";
2727 case 0xDC: return "DNL";
2728 case 0xDD: return "DRI";
2729 case 0xDE: return "DHP";
2730 case 0xDF: return "EXP";
2731 case 0xE0: return "APP0";
2732 case 0xE1: return "EXIF";
2733 case 0xE2: return "FPIX";
2734 case 0xE3: return "APP3";
2735 case 0xE4: return "APP4";
2736 case 0xE5: return "APP5";
2737 case 0xE6: return "APP6";
2738 case 0xE7: return "APP7";
2739 case 0xE8: return "APP8";
2740 case 0xE9: return "APP9";
2741 case 0xEA: return "APP10";
2742 case 0xEB: return "APP11";
2743 case 0xEC: return "APP12";
2744 case 0xED: return "APP13";
2745 case 0xEE: return "APP14";
2746 case 0xEF: return "APP15";
2747 case 0xF0: return "JPG0";
2748 case 0xFD: return "JPG13";
2749 case 0xFE: return "COM";
2750 case 0x01: return "TEM";
2751 }
2752 return "Unknown";
2753 }
2754 #endif
2755 /* }}} */
2756
2757 /* {{{ proto string exif_tagname(int index)
2758 Get headername for index or false if not defined */
PHP_FUNCTION(exif_tagname)2759 PHP_FUNCTION(exif_tagname)
2760 {
2761 zend_long tag;
2762 char *szTemp;
2763
2764 if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &tag) == FAILURE) {
2765 return;
2766 }
2767
2768 szTemp = exif_get_tagname(tag, NULL, 0, tag_table_IFD);
2769
2770 if (tag < 0 || !szTemp || !szTemp[0]) {
2771 RETURN_FALSE;
2772 }
2773
2774 RETURN_STRING(szTemp)
2775 }
2776 /* }}} */
2777
2778 /* {{{ exif_ifd_make_value
2779 * Create a value for an ifd from an info_data pointer */
exif_ifd_make_value(image_info_data * info_data,int motorola_intel)2780 static void* exif_ifd_make_value(image_info_data *info_data, int motorola_intel) {
2781 size_t byte_count;
2782 char *value_ptr, *data_ptr;
2783 size_t i;
2784
2785 image_info_value *info_value;
2786
2787 byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
2788 value_ptr = safe_emalloc(max(byte_count, 4), 1, 0);
2789 memset(value_ptr, 0, 4);
2790 if (!info_data->length) {
2791 return value_ptr;
2792 }
2793 if (info_data->format == TAG_FMT_UNDEFINED || info_data->format == TAG_FMT_STRING
2794 || (byte_count>1 && (info_data->format == TAG_FMT_BYTE || info_data->format == TAG_FMT_SBYTE))
2795 ) {
2796 memmove(value_ptr, info_data->value.s, byte_count);
2797 return value_ptr;
2798 } else if (info_data->format == TAG_FMT_BYTE) {
2799 *value_ptr = info_data->value.u;
2800 return value_ptr;
2801 } else if (info_data->format == TAG_FMT_SBYTE) {
2802 *value_ptr = info_data->value.i;
2803 return value_ptr;
2804 } else {
2805 data_ptr = value_ptr;
2806 for(i=0; i<info_data->length; i++) {
2807 if (info_data->length==1) {
2808 info_value = &info_data->value;
2809 } else {
2810 info_value = &info_data->value.list[i];
2811 }
2812 switch(info_data->format) {
2813 case TAG_FMT_USHORT:
2814 php_ifd_set16u(data_ptr, info_value->u, motorola_intel);
2815 data_ptr += 2;
2816 break;
2817 case TAG_FMT_ULONG:
2818 php_ifd_set32u(data_ptr, info_value->u, motorola_intel);
2819 data_ptr += 4;
2820 break;
2821 case TAG_FMT_SSHORT:
2822 php_ifd_set16u(data_ptr, info_value->i, motorola_intel);
2823 data_ptr += 2;
2824 break;
2825 case TAG_FMT_SLONG:
2826 php_ifd_set32u(data_ptr, info_value->i, motorola_intel);
2827 data_ptr += 4;
2828 break;
2829 case TAG_FMT_URATIONAL:
2830 php_ifd_set32u(data_ptr, info_value->sr.num, motorola_intel);
2831 php_ifd_set32u(data_ptr+4, info_value->sr.den, motorola_intel);
2832 data_ptr += 8;
2833 break;
2834 case TAG_FMT_SRATIONAL:
2835 php_ifd_set32u(data_ptr, info_value->ur.num, motorola_intel);
2836 php_ifd_set32u(data_ptr+4, info_value->ur.den, motorola_intel);
2837 data_ptr += 8;
2838 break;
2839 case TAG_FMT_SINGLE:
2840 memmove(data_ptr, &info_value->f, 4);
2841 data_ptr += 4;
2842 break;
2843 case TAG_FMT_DOUBLE:
2844 memmove(data_ptr, &info_value->d, 8);
2845 data_ptr += 8;
2846 break;
2847 }
2848 }
2849 }
2850 return value_ptr;
2851 }
2852 /* }}} */
2853
2854 /* {{{ exif_thumbnail_build
2855 * Check and build thumbnail */
exif_thumbnail_build(image_info_type * ImageInfo)2856 static void exif_thumbnail_build(image_info_type *ImageInfo) {
2857 size_t new_size, new_move, new_value;
2858 char *new_data;
2859 void *value_ptr;
2860 int i, byte_count;
2861 image_info_list *info_list;
2862 image_info_data *info_data;
2863 #ifdef EXIF_DEBUG
2864 char tagname[64];
2865 #endif
2866
2867 if (!ImageInfo->read_thumbnail || !ImageInfo->Thumbnail.offset || !ImageInfo->Thumbnail.size) {
2868 return; /* ignore this call */
2869 }
2870 #ifdef EXIF_DEBUG
2871 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: filetype = %d", ImageInfo->Thumbnail.filetype);
2872 #endif
2873 switch(ImageInfo->Thumbnail.filetype) {
2874 default:
2875 case IMAGE_FILETYPE_JPEG:
2876 /* done */
2877 break;
2878 case IMAGE_FILETYPE_TIFF_II:
2879 case IMAGE_FILETYPE_TIFF_MM:
2880 info_list = &ImageInfo->info_list[SECTION_THUMBNAIL];
2881 new_size = 8 + 2 + info_list->count * 12 + 4;
2882 #ifdef EXIF_DEBUG
2883 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: size of signature + directory(%d): 0x%02X", info_list->count, new_size);
2884 #endif
2885 new_value= new_size; /* offset for ifd values outside ifd directory */
2886 for (i=0; i<info_list->count; i++) {
2887 info_data = &info_list->list[i];
2888 byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
2889 if (byte_count > 4) {
2890 new_size += byte_count;
2891 }
2892 }
2893 new_move = new_size;
2894 new_data = safe_erealloc(ImageInfo->Thumbnail.data, 1, ImageInfo->Thumbnail.size, new_size);
2895 ImageInfo->Thumbnail.data = new_data;
2896 memmove(ImageInfo->Thumbnail.data + new_move, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
2897 ImageInfo->Thumbnail.size += new_size;
2898 /* fill in data */
2899 if (ImageInfo->motorola_intel) {
2900 memmove(new_data, "MM\x00\x2a\x00\x00\x00\x08", 8);
2901 } else {
2902 memmove(new_data, "II\x2a\x00\x08\x00\x00\x00", 8);
2903 }
2904 new_data += 8;
2905 php_ifd_set16u(new_data, info_list->count, ImageInfo->motorola_intel);
2906 new_data += 2;
2907 for (i=0; i<info_list->count; i++) {
2908 info_data = &info_list->list[i];
2909 byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
2910 #ifdef EXIF_DEBUG
2911 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: process tag(x%04X=%s): %s%s (%d bytes)", info_data->tag, exif_get_tagname(info_data->tag, tagname, -12, tag_table_IFD), (info_data->length>1)&&info_data->format!=TAG_FMT_UNDEFINED&&info_data->format!=TAG_FMT_STRING?"ARRAY OF ":"", exif_get_tagformat(info_data->format), byte_count);
2912 #endif
2913 if (info_data->tag==TAG_STRIP_OFFSETS || info_data->tag==TAG_JPEG_INTERCHANGE_FORMAT) {
2914 php_ifd_set16u(new_data + 0, info_data->tag, ImageInfo->motorola_intel);
2915 php_ifd_set16u(new_data + 2, TAG_FMT_ULONG, ImageInfo->motorola_intel);
2916 php_ifd_set32u(new_data + 4, 1, ImageInfo->motorola_intel);
2917 php_ifd_set32u(new_data + 8, new_move, ImageInfo->motorola_intel);
2918 } else {
2919 php_ifd_set16u(new_data + 0, info_data->tag, ImageInfo->motorola_intel);
2920 php_ifd_set16u(new_data + 2, info_data->format, ImageInfo->motorola_intel);
2921 php_ifd_set32u(new_data + 4, info_data->length, ImageInfo->motorola_intel);
2922 value_ptr = exif_ifd_make_value(info_data, ImageInfo->motorola_intel);
2923 if (byte_count <= 4) {
2924 memmove(new_data+8, value_ptr, 4);
2925 } else {
2926 php_ifd_set32u(new_data+8, new_value, ImageInfo->motorola_intel);
2927 #ifdef EXIF_DEBUG
2928 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: writing with value offset: 0x%04X + 0x%02X", new_value, byte_count);
2929 #endif
2930 memmove(ImageInfo->Thumbnail.data+new_value, value_ptr, byte_count);
2931 new_value += byte_count;
2932 }
2933 efree(value_ptr);
2934 }
2935 new_data += 12;
2936 }
2937 memset(new_data, 0, 4); /* next ifd pointer */
2938 #ifdef EXIF_DEBUG
2939 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: created");
2940 #endif
2941 break;
2942 }
2943 }
2944 /* }}} */
2945
2946 /* {{{ exif_thumbnail_extract
2947 * Grab the thumbnail, corrected */
exif_thumbnail_extract(image_info_type * ImageInfo,char * offset,size_t length)2948 static void exif_thumbnail_extract(image_info_type *ImageInfo, char *offset, size_t length) {
2949 if (ImageInfo->Thumbnail.data) {
2950 exif_error_docref("exif_read_data#error_mult_thumb" EXIFERR_CC, ImageInfo, E_WARNING, "Multiple possible thumbnails");
2951 return; /* Should not happen */
2952 }
2953 if (!ImageInfo->read_thumbnail) {
2954 return; /* ignore this call */
2955 }
2956 /* according to exif2.1, the thumbnail is not supposed to be greater than 64K */
2957 if (ImageInfo->Thumbnail.size >= 65536
2958 || ImageInfo->Thumbnail.size <= 0
2959 || ImageInfo->Thumbnail.offset <= 0
2960 ) {
2961 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Illegal thumbnail size/offset");
2962 return;
2963 }
2964 /* Check to make sure we are not going to go past the ExifLength */
2965 if (ImageInfo->Thumbnail.size > length
2966 || (ImageInfo->Thumbnail.offset + ImageInfo->Thumbnail.size) > length
2967 || ImageInfo->Thumbnail.offset > length - ImageInfo->Thumbnail.size
2968 ) {
2969 EXIF_ERRLOG_THUMBEOF(ImageInfo)
2970 return;
2971 }
2972 ImageInfo->Thumbnail.data = estrndup(offset + ImageInfo->Thumbnail.offset, ImageInfo->Thumbnail.size);
2973 exif_thumbnail_build(ImageInfo);
2974 }
2975 /* }}} */
2976
2977 /* {{{ exif_process_undefined
2978 * Copy a string/buffer in Exif header to a character string and return length of allocated buffer if any. */
exif_process_undefined(char ** result,char * value,size_t byte_count)2979 static int exif_process_undefined(char **result, char *value, size_t byte_count) {
2980 /* we cannot use strlcpy - here the problem is that we have to copy NUL
2981 * chars up to byte_count, we also have to add a single NUL character to
2982 * force end of string.
2983 * estrndup does not return length
2984 */
2985 if (byte_count) {
2986 (*result) = estrndup(value, byte_count); /* NULL @ byte_count!!! */
2987 return byte_count+1;
2988 }
2989 return 0;
2990 }
2991 /* }}} */
2992
2993 /* {{{ exif_process_string_raw
2994 * Copy a string in Exif header to a character string returns length of allocated buffer if any. */
exif_process_string_raw(char ** result,char * value,size_t byte_count)2995 static int exif_process_string_raw(char **result, char *value, size_t byte_count) {
2996 /* we cannot use strlcpy - here the problem is that we have to copy NUL
2997 * chars up to byte_count, we also have to add a single NUL character to
2998 * force end of string.
2999 */
3000 if (byte_count) {
3001 (*result) = safe_emalloc(byte_count, 1, 1);
3002 memcpy(*result, value, byte_count);
3003 (*result)[byte_count] = '\0';
3004 return byte_count+1;
3005 }
3006 return 0;
3007 }
3008 /* }}} */
3009
3010 /* {{{ exif_process_string
3011 * Copy a string in Exif header to a character string and return length of allocated buffer if any.
3012 * In contrast to exif_process_string this function does always return a string buffer */
exif_process_string(char ** result,char * value,size_t byte_count)3013 static int exif_process_string(char **result, char *value, size_t byte_count) {
3014 /* we cannot use strlcpy - here the problem is that we cannot use strlen to
3015 * determin length of string and we cannot use strlcpy with len=byte_count+1
3016 * because then we might get into an EXCEPTION if we exceed an allocated
3017 * memory page...so we use php_strnlen in conjunction with memcpy and add the NUL
3018 * char.
3019 * estrdup would sometimes allocate more memory and does not return length
3020 */
3021 if ((byte_count=php_strnlen(value, byte_count)) > 0) {
3022 return exif_process_undefined(result, value, byte_count);
3023 }
3024 (*result) = estrndup("", 1); /* force empty string */
3025 return byte_count+1;
3026 }
3027 /* }}} */
3028
3029 /* {{{ exif_process_user_comment
3030 * Process UserComment in IFD. */
exif_process_user_comment(image_info_type * ImageInfo,char ** pszInfoPtr,char ** pszEncoding,char * szValuePtr,int ByteCount)3031 static int exif_process_user_comment(image_info_type *ImageInfo, char **pszInfoPtr, char **pszEncoding, char *szValuePtr, int ByteCount)
3032 {
3033 int a;
3034 char *decode;
3035 size_t len;
3036
3037 *pszEncoding = NULL;
3038 /* Copy the comment */
3039 if (ByteCount>=8) {
3040 const zend_encoding *from, *to;
3041 if (!memcmp(szValuePtr, "UNICODE\0", 8)) {
3042 *pszEncoding = estrdup((const char*)szValuePtr);
3043 szValuePtr = szValuePtr+8;
3044 ByteCount -= 8;
3045 /* First try to detect BOM: ZERO WIDTH NOBREAK SPACE (FEFF 16)
3046 * since we have no encoding support for the BOM yet we skip that.
3047 */
3048 if (ByteCount >=2 && !memcmp(szValuePtr, "\xFE\xFF", 2)) {
3049 decode = "UCS-2BE";
3050 szValuePtr = szValuePtr+2;
3051 ByteCount -= 2;
3052 } else if (ByteCount >=2 && !memcmp(szValuePtr, "\xFF\xFE", 2)) {
3053 decode = "UCS-2LE";
3054 szValuePtr = szValuePtr+2;
3055 ByteCount -= 2;
3056 } else if (ImageInfo->motorola_intel) {
3057 decode = ImageInfo->decode_unicode_be;
3058 } else {
3059 decode = ImageInfo->decode_unicode_le;
3060 }
3061 to = zend_multibyte_fetch_encoding(ImageInfo->encode_unicode);
3062 from = zend_multibyte_fetch_encoding(decode);
3063 /* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX */
3064 if (!to || !from || zend_multibyte_encoding_converter(
3065 (unsigned char**)pszInfoPtr,
3066 &len,
3067 (unsigned char*)szValuePtr,
3068 ByteCount,
3069 to,
3070 from) == (size_t)-1) {
3071 len = exif_process_string_raw(pszInfoPtr, szValuePtr, ByteCount);
3072 }
3073 return len;
3074 } else if (!memcmp(szValuePtr, "ASCII\0\0\0", 8)) {
3075 *pszEncoding = estrdup((const char*)szValuePtr);
3076 szValuePtr = szValuePtr+8;
3077 ByteCount -= 8;
3078 } else if (!memcmp(szValuePtr, "JIS\0\0\0\0\0", 8)) {
3079 /* JIS should be tanslated to MB or we leave it to the user - leave it to the user */
3080 *pszEncoding = estrdup((const char*)szValuePtr);
3081 szValuePtr = szValuePtr+8;
3082 ByteCount -= 8;
3083 /* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX */
3084 to = zend_multibyte_fetch_encoding(ImageInfo->encode_jis);
3085 from = zend_multibyte_fetch_encoding(ImageInfo->motorola_intel ? ImageInfo->decode_jis_be : ImageInfo->decode_jis_le);
3086 if (!to || !from || zend_multibyte_encoding_converter(
3087 (unsigned char**)pszInfoPtr,
3088 &len,
3089 (unsigned char*)szValuePtr,
3090 ByteCount,
3091 to,
3092 from) == (size_t)-1) {
3093 len = exif_process_string_raw(pszInfoPtr, szValuePtr, ByteCount);
3094 }
3095 return len;
3096 } else if (!memcmp(szValuePtr, "\0\0\0\0\0\0\0\0", 8)) {
3097 /* 8 NULL means undefined and should be ASCII... */
3098 *pszEncoding = estrdup("UNDEFINED");
3099 szValuePtr = szValuePtr+8;
3100 ByteCount -= 8;
3101 }
3102 }
3103
3104 /* Olympus has this padded with trailing spaces. Remove these first. */
3105 if (ByteCount>0) {
3106 for (a=ByteCount-1;a && szValuePtr[a]==' ';a--) {
3107 (szValuePtr)[a] = '\0';
3108 }
3109 }
3110
3111 /* normal text without encoding */
3112 exif_process_string(pszInfoPtr, szValuePtr, ByteCount);
3113 return strlen(*pszInfoPtr);
3114 }
3115 /* }}} */
3116
3117 /* {{{ exif_process_unicode
3118 * Process unicode field in IFD. */
exif_process_unicode(image_info_type * ImageInfo,xp_field_type * xp_field,int tag,char * szValuePtr,int ByteCount)3119 static int exif_process_unicode(image_info_type *ImageInfo, xp_field_type *xp_field, int tag, char *szValuePtr, int ByteCount)
3120 {
3121 xp_field->tag = tag;
3122 xp_field->value = NULL;
3123 /* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX */
3124 if (zend_multibyte_encoding_converter(
3125 (unsigned char**)&xp_field->value,
3126 &xp_field->size,
3127 (unsigned char*)szValuePtr,
3128 ByteCount,
3129 zend_multibyte_fetch_encoding(ImageInfo->encode_unicode),
3130 zend_multibyte_fetch_encoding(ImageInfo->motorola_intel ? ImageInfo->decode_unicode_be : ImageInfo->decode_unicode_le)
3131 ) == (size_t)-1) {
3132 xp_field->size = exif_process_string_raw(&xp_field->value, szValuePtr, ByteCount);
3133 }
3134 return xp_field->size;
3135 }
3136 /* }}} */
3137
3138 /* {{{ exif_process_IFD_in_MAKERNOTE
3139 * Process nested IFDs directories in Maker Note. */
exif_process_IFD_in_MAKERNOTE(image_info_type * ImageInfo,char * value_ptr,int value_len,char * offset_base,size_t IFDlength,size_t displacement)3140 static int exif_process_IFD_in_MAKERNOTE(image_info_type *ImageInfo, char * value_ptr, int value_len, char *offset_base, size_t IFDlength, size_t displacement)
3141 {
3142 size_t i;
3143 int de, section_index = SECTION_MAKERNOTE;
3144 int NumDirEntries, old_motorola_intel;
3145 #ifdef KALLE_0
3146 int offset_diff;
3147 #endif
3148 const maker_note_type *maker_note;
3149 char *dir_start;
3150 int data_len;
3151
3152 for (i=0; i<=sizeof(maker_note_array)/sizeof(maker_note_type); i++) {
3153 if (i==sizeof(maker_note_array)/sizeof(maker_note_type)) {
3154 #ifdef EXIF_DEBUG
3155 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "No maker note data found. Detected maker: %s (length = %d)", ImageInfo->make, strlen(ImageInfo->make));
3156 #endif
3157 /* unknown manufacturer, not an error, use it as a string */
3158 return TRUE;
3159 }
3160
3161 maker_note = maker_note_array+i;
3162
3163 /*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "check (%s,%s)", maker_note->make?maker_note->make:"", maker_note->model?maker_note->model:"");*/
3164 if (maker_note->make && (!ImageInfo->make || strcmp(maker_note->make, ImageInfo->make)))
3165 continue;
3166 if (maker_note->model && (!ImageInfo->model || strcmp(maker_note->model, ImageInfo->model)))
3167 continue;
3168 if (maker_note->id_string && value_len >= maker_note->id_string_len
3169 && strncmp(maker_note->id_string, value_ptr, maker_note->id_string_len))
3170 continue;
3171 break;
3172 }
3173
3174 if (value_len < 2 || maker_note->offset >= value_len - 1) {
3175 /* Do not go past the value end */
3176 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "IFD data too short: 0x%04X offset 0x%04X", value_len, maker_note->offset);
3177 return FALSE;
3178 }
3179
3180 dir_start = value_ptr + maker_note->offset;
3181
3182 #ifdef EXIF_DEBUG
3183 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process %s @x%04X + 0x%04X=%d: %s", exif_get_sectionname(section_index), (int)dir_start-(int)offset_base+maker_note->offset+displacement, value_len, value_len, exif_char_dump(value_ptr, value_len, (int)dir_start-(int)offset_base+maker_note->offset+displacement));
3184 #endif
3185
3186 ImageInfo->sections_found |= FOUND_MAKERNOTE;
3187
3188 old_motorola_intel = ImageInfo->motorola_intel;
3189 switch (maker_note->byte_order) {
3190 case MN_ORDER_INTEL:
3191 ImageInfo->motorola_intel = 0;
3192 break;
3193 case MN_ORDER_MOTOROLA:
3194 ImageInfo->motorola_intel = 1;
3195 break;
3196 default:
3197 case MN_ORDER_NORMAL:
3198 break;
3199 }
3200
3201 NumDirEntries = php_ifd_get16u(dir_start, ImageInfo->motorola_intel);
3202
3203 switch (maker_note->offset_mode) {
3204 case MN_OFFSET_MAKER:
3205 offset_base = value_ptr;
3206 data_len = value_len;
3207 break;
3208 #ifdef KALLE_0
3209 case MN_OFFSET_GUESS:
3210 if (maker_note->offset + 10 + 4 >= value_len) {
3211 /* Can not read dir_start+10 since it's beyond value end */
3212 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "IFD data too short: 0x%04X", value_len);
3213 return FALSE;
3214 }
3215 offset_diff = 2 + NumDirEntries*12 + 4 - php_ifd_get32u(dir_start+10, ImageInfo->motorola_intel);
3216 #ifdef EXIF_DEBUG
3217 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Using automatic offset correction: 0x%04X", ((int)dir_start-(int)offset_base+maker_note->offset+displacement) + offset_diff);
3218 #endif
3219 if (offset_diff < 0 || offset_diff >= value_len ) {
3220 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "IFD data bad offset: 0x%04X length 0x%04X", offset_diff, value_len);
3221 return FALSE;
3222 }
3223 offset_base = value_ptr + offset_diff;
3224 data_len = value_len - offset_diff;
3225 break;
3226 #endif
3227 default:
3228 case MN_OFFSET_NORMAL:
3229 data_len = value_len;
3230 break;
3231 }
3232
3233 if ((2+NumDirEntries*12) > value_len) {
3234 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size: 2 + 0x%04X*12 = 0x%04X > 0x%04X", NumDirEntries, 2+NumDirEntries*12, value_len);
3235 return FALSE;
3236 }
3237 if ((dir_start - value_ptr) > value_len - (2+NumDirEntries*12)) {
3238 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size: 0x%04X > 0x%04X", (dir_start - value_ptr) + (2+NumDirEntries*12), value_len);
3239 return FALSE;
3240 }
3241
3242 for (de=0;de<NumDirEntries;de++) {
3243 size_t offset = 2 + 12 * de;
3244 if (!exif_process_IFD_TAG(ImageInfo, dir_start + offset,
3245 offset_base, data_len - offset, displacement, section_index, 0, maker_note->tag_table)) {
3246 return FALSE;
3247 }
3248 }
3249 ImageInfo->motorola_intel = old_motorola_intel;
3250 /* NextDirOffset (must be NULL) = php_ifd_get32u(dir_start+2+12*de, ImageInfo->motorola_intel);*/
3251 #ifdef EXIF_DEBUG
3252 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Subsection %s done", exif_get_sectionname(SECTION_MAKERNOTE));
3253 #endif
3254 return TRUE;
3255 }
3256 /* }}} */
3257
3258 #define REQUIRE_NON_EMPTY() do { \
3259 if (byte_count == 0) { \
3260 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Cannot be empty", tag, exif_get_tagname(tag, tagname, -12, tag_table)); \
3261 return FALSE; \
3262 } \
3263 } while (0)
3264
3265
3266 /* {{{ exif_process_IFD_TAG
3267 * Process one of the nested IFDs directories. */
exif_process_IFD_TAG(image_info_type * ImageInfo,char * dir_entry,char * offset_base,size_t IFDlength,size_t displacement,int section_index,int ReadNextIFD,tag_table_type tag_table)3268 static int exif_process_IFD_TAG(image_info_type *ImageInfo, char *dir_entry, char *offset_base, size_t IFDlength, size_t displacement, int section_index, int ReadNextIFD, tag_table_type tag_table)
3269 {
3270 size_t length;
3271 unsigned int tag, format, components;
3272 char *value_ptr, tagname[64], cbuf[32], *outside=NULL;
3273 size_t byte_count, offset_val, fpos, fgot;
3274 int64_t byte_count_signed;
3275 xp_field_type *tmp_xp;
3276 #ifdef EXIF_DEBUG
3277 char *dump_data;
3278 int dump_free;
3279 #endif /* EXIF_DEBUG */
3280
3281 /* Protect against corrupt headers */
3282 if (ImageInfo->ifd_nesting_level > MAX_IFD_NESTING_LEVEL) {
3283 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "corrupt EXIF header: maximum directory nesting level reached");
3284 return FALSE;
3285 }
3286 ImageInfo->ifd_nesting_level++;
3287
3288 tag = php_ifd_get16u(dir_entry, ImageInfo->motorola_intel);
3289 format = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
3290 components = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel);
3291
3292 if (!format || format > NUM_FORMATS) {
3293 /* (-1) catches illegal zero case as unsigned underflows to positive large. */
3294 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal format code 0x%04X, suppose BYTE", tag, exif_get_tagname(tag, tagname, -12, tag_table), format);
3295 format = TAG_FMT_BYTE;
3296 /*return TRUE;*/
3297 }
3298
3299 byte_count_signed = (int64_t)components * php_tiff_bytes_per_format[format];
3300
3301 if (byte_count_signed < 0 || (byte_count_signed > INT32_MAX)) {
3302 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal byte_count", tag, exif_get_tagname(tag, tagname, -12, tag_table));
3303 return FALSE;
3304 }
3305
3306 byte_count = (size_t)byte_count_signed;
3307
3308 if (byte_count > 4) {
3309 offset_val = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
3310 /* If its bigger than 4 bytes, the dir entry contains an offset. */
3311 value_ptr = offset_base+offset_val;
3312 /*
3313 dir_entry is ImageInfo->file.list[sn].data+2+i*12
3314 offset_base is ImageInfo->file.list[sn].data-dir_offset
3315 dir_entry - offset_base is dir_offset+2+i*12
3316 */
3317 if (byte_count > IFDlength || offset_val > IFDlength-byte_count || value_ptr < dir_entry || offset_val < (size_t)(dir_entry-offset_base) || dir_entry <= offset_base) {
3318 /* It is important to check for IMAGE_FILETYPE_TIFF
3319 * JPEG does not use absolute pointers instead its pointers are
3320 * relative to the start of the TIFF header in APP1 section. */
3321 if (byte_count > ImageInfo->FileSize || offset_val>ImageInfo->FileSize-byte_count || (ImageInfo->FileType!=IMAGE_FILETYPE_TIFF_II && ImageInfo->FileType!=IMAGE_FILETYPE_TIFF_MM && ImageInfo->FileType!=IMAGE_FILETYPE_JPEG)) {
3322 if (value_ptr < dir_entry) {
3323 /* we can read this if offset_val > 0 */
3324 /* some files have their values in other parts of the file */
3325 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal pointer offset(x%04X < x%04X)", tag, exif_get_tagname(tag, tagname, -12, tag_table), offset_val, dir_entry);
3326 } else {
3327 /* this is for sure not allowed */
3328 /* exception are IFD pointers */
3329 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal pointer offset(x%04X + x%04X = x%04X > x%04X)", tag, exif_get_tagname(tag, tagname, -12, tag_table), offset_val, byte_count, offset_val+byte_count, IFDlength);
3330 }
3331 return FALSE;
3332 }
3333 if (byte_count>sizeof(cbuf)) {
3334 /* mark as outside range and get buffer */
3335 value_ptr = safe_emalloc(byte_count, 1, 0);
3336 outside = value_ptr;
3337 } else {
3338 /* In most cases we only access a small range so
3339 * it is faster to use a static buffer there
3340 * BUT it offers also the possibility to have
3341 * pointers read without the need to free them
3342 * explicitley before returning. */
3343 memset(&cbuf, 0, sizeof(cbuf));
3344 value_ptr = cbuf;
3345 }
3346
3347 fpos = php_stream_tell(ImageInfo->infile);
3348 php_stream_seek(ImageInfo->infile, displacement+offset_val, SEEK_SET);
3349 fgot = php_stream_tell(ImageInfo->infile);
3350 if (fgot!=displacement+offset_val) {
3351 EFREE_IF(outside);
3352 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Wrong file pointer: 0x%08X != 0x%08X", fgot, displacement+offset_val);
3353 return FALSE;
3354 }
3355 fgot = php_stream_read(ImageInfo->infile, value_ptr, byte_count);
3356 php_stream_seek(ImageInfo->infile, fpos, SEEK_SET);
3357 if (fgot<byte_count) {
3358 EFREE_IF(outside);
3359 EXIF_ERRLOG_FILEEOF(ImageInfo)
3360 return FALSE;
3361 }
3362 }
3363 } else {
3364 /* 4 bytes or less and value is in the dir entry itself */
3365 value_ptr = dir_entry+8;
3366 offset_val= value_ptr-offset_base;
3367 }
3368
3369 ImageInfo->sections_found |= FOUND_ANY_TAG;
3370 #ifdef EXIF_DEBUG
3371 dump_data = exif_dump_data(&dump_free, format, components, length, ImageInfo->motorola_intel, value_ptr);
3372 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process tag(x%04X=%s,@x%04X + x%04X(=%d)): %s%s %s", tag, exif_get_tagname(tag, tagname, -12, tag_table), offset_val+displacement, byte_count, byte_count, (components>1)&&format!=TAG_FMT_UNDEFINED&&format!=TAG_FMT_STRING?"ARRAY OF ":"", exif_get_tagformat(format), dump_data);
3373 if (dump_free) {
3374 efree(dump_data);
3375 }
3376 #endif
3377
3378 /* NB: The following code may not assume that there is at least one component!
3379 * byte_count may be zero! */
3380
3381 if (section_index==SECTION_THUMBNAIL) {
3382 if (!ImageInfo->Thumbnail.data) {
3383 REQUIRE_NON_EMPTY();
3384 switch(tag) {
3385 case TAG_IMAGEWIDTH:
3386 case TAG_COMP_IMAGE_WIDTH:
3387 ImageInfo->Thumbnail.width = exif_convert_any_to_int(value_ptr, exif_rewrite_tag_format_to_unsigned(format), ImageInfo->motorola_intel);
3388 break;
3389
3390 case TAG_IMAGEHEIGHT:
3391 case TAG_COMP_IMAGE_HEIGHT:
3392 ImageInfo->Thumbnail.height = exif_convert_any_to_int(value_ptr, exif_rewrite_tag_format_to_unsigned(format), ImageInfo->motorola_intel);
3393 break;
3394
3395 case TAG_STRIP_OFFSETS:
3396 case TAG_JPEG_INTERCHANGE_FORMAT:
3397 /* accept both formats */
3398 ImageInfo->Thumbnail.offset = exif_convert_any_to_int(value_ptr, exif_rewrite_tag_format_to_unsigned(format), ImageInfo->motorola_intel);
3399 break;
3400
3401 case TAG_STRIP_BYTE_COUNTS:
3402 if (ImageInfo->FileType == IMAGE_FILETYPE_TIFF_II || ImageInfo->FileType == IMAGE_FILETYPE_TIFF_MM) {
3403 ImageInfo->Thumbnail.filetype = ImageInfo->FileType;
3404 } else {
3405 /* motorola is easier to read */
3406 ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_TIFF_MM;
3407 }
3408 ImageInfo->Thumbnail.size = exif_convert_any_to_int(value_ptr, exif_rewrite_tag_format_to_unsigned(format), ImageInfo->motorola_intel);
3409 break;
3410
3411 case TAG_JPEG_INTERCHANGE_FORMAT_LEN:
3412 if (ImageInfo->Thumbnail.filetype == IMAGE_FILETYPE_UNKNOWN) {
3413 ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_JPEG;
3414 ImageInfo->Thumbnail.size = exif_convert_any_to_int(value_ptr, exif_rewrite_tag_format_to_unsigned(format), ImageInfo->motorola_intel);
3415 }
3416 break;
3417 }
3418 }
3419 } else {
3420 if (section_index==SECTION_IFD0 || section_index==SECTION_EXIF)
3421 switch(tag) {
3422 case TAG_COPYRIGHT:
3423 /* check for "<photographer> NUL <editor> NUL" */
3424 if (byte_count>1 && (length=php_strnlen(value_ptr, byte_count)) > 0) {
3425 if (length<byte_count-1) {
3426 /* When there are any characters after the first NUL */
3427 EFREE_IF(ImageInfo->CopyrightPhotographer);
3428 EFREE_IF(ImageInfo->CopyrightEditor);
3429 EFREE_IF(ImageInfo->Copyright);
3430 ImageInfo->CopyrightPhotographer = estrdup(value_ptr);
3431 ImageInfo->CopyrightEditor = estrndup(value_ptr+length+1, byte_count-length-1);
3432 spprintf(&ImageInfo->Copyright, 0, "%s, %s", ImageInfo->CopyrightPhotographer, ImageInfo->CopyrightEditor);
3433 /* format = TAG_FMT_UNDEFINED; this musn't be ASCII */
3434 /* but we are not supposed to change this */
3435 /* keep in mind that image_info does not store editor value */
3436 } else {
3437 EFREE_IF(ImageInfo->Copyright);
3438 ImageInfo->Copyright = estrndup(value_ptr, byte_count);
3439 }
3440 }
3441 break;
3442
3443 case TAG_USERCOMMENT:
3444 EFREE_IF(ImageInfo->UserComment);
3445 ImageInfo->UserComment = NULL;
3446 EFREE_IF(ImageInfo->UserCommentEncoding);
3447 ImageInfo->UserCommentEncoding = NULL;
3448 ImageInfo->UserCommentLength = exif_process_user_comment(ImageInfo, &(ImageInfo->UserComment), &(ImageInfo->UserCommentEncoding), value_ptr, byte_count);
3449 break;
3450
3451 case TAG_XP_TITLE:
3452 case TAG_XP_COMMENTS:
3453 case TAG_XP_AUTHOR:
3454 case TAG_XP_KEYWORDS:
3455 case TAG_XP_SUBJECT:
3456 tmp_xp = (xp_field_type*)safe_erealloc(ImageInfo->xp_fields.list, (ImageInfo->xp_fields.count+1), sizeof(xp_field_type), 0);
3457 ImageInfo->sections_found |= FOUND_WINXP;
3458 ImageInfo->xp_fields.list = tmp_xp;
3459 ImageInfo->xp_fields.count++;
3460 exif_process_unicode(ImageInfo, &(ImageInfo->xp_fields.list[ImageInfo->xp_fields.count-1]), tag, value_ptr, byte_count);
3461 break;
3462
3463 case TAG_FNUMBER:
3464 /* Simplest way of expressing aperture, so I trust it the most.
3465 (overwrite previously computed value if there is one) */
3466 REQUIRE_NON_EMPTY();
3467 ImageInfo->ApertureFNumber = (float)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel);
3468 break;
3469
3470 case TAG_APERTURE:
3471 case TAG_MAX_APERTURE:
3472 /* More relevant info always comes earlier, so only use this field if we don't
3473 have appropriate aperture information yet. */
3474 if (ImageInfo->ApertureFNumber == 0) {
3475 REQUIRE_NON_EMPTY();
3476 ImageInfo->ApertureFNumber
3477 = (float)exp(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel)*log(2)*0.5);
3478 }
3479 break;
3480
3481 case TAG_SHUTTERSPEED:
3482 /* More complicated way of expressing exposure time, so only use
3483 this value if we don't already have it from somewhere else.
3484 SHUTTERSPEED comes after EXPOSURE TIME
3485 */
3486 if (ImageInfo->ExposureTime == 0) {
3487 REQUIRE_NON_EMPTY();
3488 ImageInfo->ExposureTime
3489 = (float)(1/exp(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel)*log(2)));
3490 }
3491 break;
3492 case TAG_EXPOSURETIME:
3493 ImageInfo->ExposureTime = -1;
3494 break;
3495
3496 case TAG_COMP_IMAGE_WIDTH:
3497 REQUIRE_NON_EMPTY();
3498 ImageInfo->ExifImageWidth = exif_convert_any_to_int(value_ptr, exif_rewrite_tag_format_to_unsigned(format), ImageInfo->motorola_intel);
3499 break;
3500
3501 case TAG_FOCALPLANE_X_RES:
3502 REQUIRE_NON_EMPTY();
3503 ImageInfo->FocalplaneXRes = exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel);
3504 break;
3505
3506 case TAG_SUBJECT_DISTANCE:
3507 /* Inidcates the distacne the autofocus camera is focused to.
3508 Tends to be less accurate as distance increases. */
3509 REQUIRE_NON_EMPTY();
3510 ImageInfo->Distance = (float)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel);
3511 break;
3512
3513 case TAG_FOCALPLANE_RESOLUTION_UNIT:
3514 REQUIRE_NON_EMPTY();
3515 switch((int)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel)) {
3516 case 1: ImageInfo->FocalplaneUnits = 25.4; break; /* inch */
3517 case 2:
3518 /* According to the information I was using, 2 measn meters.
3519 But looking at the Cannon powershot's files, inches is the only
3520 sensible value. */
3521 ImageInfo->FocalplaneUnits = 25.4;
3522 break;
3523
3524 case 3: ImageInfo->FocalplaneUnits = 10; break; /* centimeter */
3525 case 4: ImageInfo->FocalplaneUnits = 1; break; /* milimeter */
3526 case 5: ImageInfo->FocalplaneUnits = .001; break; /* micrometer */
3527 }
3528 break;
3529
3530 case TAG_SUB_IFD:
3531 if (format==TAG_FMT_IFD) {
3532 /* If this is called we are either in a TIFFs thumbnail or a JPEG where we cannot handle it */
3533 /* TIFF thumbnail: our data structure cannot store a thumbnail of a thumbnail */
3534 /* JPEG do we have the data area and what to do with it */
3535 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Skip SUB IFD");
3536 }
3537 break;
3538
3539 case TAG_MAKE:
3540 EFREE_IF(ImageInfo->make);
3541 ImageInfo->make = estrndup(value_ptr, byte_count);
3542 break;
3543 case TAG_MODEL:
3544 EFREE_IF(ImageInfo->model);
3545 ImageInfo->model = estrndup(value_ptr, byte_count);
3546 break;
3547
3548 case TAG_MAKER_NOTE:
3549 if (!exif_process_IFD_in_MAKERNOTE(ImageInfo, value_ptr, byte_count, offset_base, IFDlength, displacement)) {
3550 EFREE_IF(outside);
3551 return FALSE;
3552 }
3553 break;
3554
3555 case TAG_EXIF_IFD_POINTER:
3556 case TAG_GPS_IFD_POINTER:
3557 case TAG_INTEROP_IFD_POINTER:
3558 if (ReadNextIFD) {
3559 REQUIRE_NON_EMPTY();
3560 char *Subdir_start;
3561 int sub_section_index = 0;
3562 switch(tag) {
3563 case TAG_EXIF_IFD_POINTER:
3564 #ifdef EXIF_DEBUG
3565 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found EXIF");
3566 #endif
3567 ImageInfo->sections_found |= FOUND_EXIF;
3568 sub_section_index = SECTION_EXIF;
3569 break;
3570 case TAG_GPS_IFD_POINTER:
3571 #ifdef EXIF_DEBUG
3572 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found GPS");
3573 #endif
3574 ImageInfo->sections_found |= FOUND_GPS;
3575 sub_section_index = SECTION_GPS;
3576 break;
3577 case TAG_INTEROP_IFD_POINTER:
3578 #ifdef EXIF_DEBUG
3579 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found INTEROPERABILITY");
3580 #endif
3581 ImageInfo->sections_found |= FOUND_INTEROP;
3582 sub_section_index = SECTION_INTEROP;
3583 break;
3584 }
3585 Subdir_start = offset_base + php_ifd_get32u(value_ptr, ImageInfo->motorola_intel);
3586 if (Subdir_start < offset_base || Subdir_start > offset_base+IFDlength) {
3587 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD Pointer");
3588 EFREE_IF(outside);
3589 return FALSE;
3590 }
3591 if (!exif_process_IFD_in_JPEG(ImageInfo, Subdir_start, offset_base, IFDlength, displacement, sub_section_index, tag)) {
3592 EFREE_IF(outside);
3593 return FALSE;
3594 }
3595 #ifdef EXIF_DEBUG
3596 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Subsection %s done", exif_get_sectionname(sub_section_index));
3597 #endif
3598 }
3599 }
3600 }
3601 exif_iif_add_tag(ImageInfo, section_index, exif_get_tagname(tag, tagname, sizeof(tagname), tag_table), tag, format, components, value_ptr, byte_count);
3602 EFREE_IF(outside);
3603 return TRUE;
3604 }
3605 /* }}} */
3606
3607 /* {{{ exif_process_IFD_in_JPEG
3608 * Process one of the nested IFDs directories. */
exif_process_IFD_in_JPEG(image_info_type * ImageInfo,char * dir_start,char * offset_base,size_t IFDlength,size_t displacement,int section_index,int tag)3609 static int exif_process_IFD_in_JPEG(image_info_type *ImageInfo, char *dir_start, char *offset_base, size_t IFDlength, size_t displacement, int section_index, int tag)
3610 {
3611 int de;
3612 int NumDirEntries;
3613 int NextDirOffset = 0;
3614
3615 #ifdef EXIF_DEBUG
3616 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process %s (x%04X(=%d))", exif_get_sectionname(section_index), IFDlength, IFDlength);
3617 #endif
3618
3619 ImageInfo->sections_found |= FOUND_IFD0;
3620
3621 if ((dir_start + 2) > (offset_base+IFDlength)) {
3622 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size");
3623 return FALSE;
3624 }
3625
3626 NumDirEntries = php_ifd_get16u(dir_start, ImageInfo->motorola_intel);
3627
3628 if ((dir_start+2+NumDirEntries*12) > (offset_base+IFDlength)) {
3629 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size: x%04X + 2 + x%04X*12 = x%04X > x%04X", (int)((size_t)dir_start+2-(size_t)offset_base), NumDirEntries, (int)((size_t)dir_start+2+NumDirEntries*12-(size_t)offset_base), IFDlength);
3630 return FALSE;
3631 }
3632
3633 for (de=0;de<NumDirEntries;de++) {
3634 if (!exif_process_IFD_TAG(ImageInfo, dir_start + 2 + 12 * de,
3635 offset_base, IFDlength, displacement, section_index, 1, exif_get_tag_table(section_index))) {
3636 return FALSE;
3637 }
3638 }
3639 /*
3640 * Ignore IFD2 if it purportedly exists
3641 */
3642 if (section_index == SECTION_THUMBNAIL) {
3643 return TRUE;
3644 }
3645 /*
3646 * Hack to make it process IDF1 I hope
3647 * There are 2 IDFs, the second one holds the keys (0x0201 and 0x0202) to the thumbnail
3648 */
3649 if ((dir_start+2+12*de + 4) > (offset_base+IFDlength)) {
3650 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size");
3651 return FALSE;
3652 }
3653
3654 if (tag != TAG_EXIF_IFD_POINTER && tag != TAG_GPS_IFD_POINTER) {
3655 NextDirOffset = php_ifd_get32u(dir_start+2+12*de, ImageInfo->motorola_intel);
3656 }
3657
3658 if (NextDirOffset) {
3659 /* the next line seems false but here IFDlength means length of all IFDs */
3660 if (offset_base + NextDirOffset < offset_base || offset_base + NextDirOffset > offset_base+IFDlength) {
3661 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD offset");
3662 return FALSE;
3663 }
3664 /* That is the IFD for the first thumbnail */
3665 #ifdef EXIF_DEBUG
3666 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Expect next IFD to be thumbnail");
3667 #endif
3668 if (exif_process_IFD_in_JPEG(ImageInfo, offset_base + NextDirOffset, offset_base, IFDlength, displacement, SECTION_THUMBNAIL, 0)) {
3669 #ifdef EXIF_DEBUG
3670 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail size: 0x%04X", ImageInfo->Thumbnail.size);
3671 #endif
3672 if (ImageInfo->Thumbnail.filetype != IMAGE_FILETYPE_UNKNOWN
3673 && ImageInfo->Thumbnail.size
3674 && ImageInfo->Thumbnail.offset
3675 && ImageInfo->read_thumbnail
3676 ) {
3677 exif_thumbnail_extract(ImageInfo, offset_base, IFDlength);
3678 }
3679 return TRUE;
3680 } else {
3681 return FALSE;
3682 }
3683 }
3684 return TRUE;
3685 }
3686 /* }}} */
3687
3688 /* {{{ exif_process_TIFF_in_JPEG
3689 Process a TIFF header in a JPEG file
3690 */
exif_process_TIFF_in_JPEG(image_info_type * ImageInfo,char * CharBuf,size_t length,size_t displacement)3691 static void exif_process_TIFF_in_JPEG(image_info_type *ImageInfo, char *CharBuf, size_t length, size_t displacement)
3692 {
3693 unsigned exif_value_2a, offset_of_ifd;
3694
3695 if (length < 2) {
3696 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Missing TIFF alignment marker");
3697 return;
3698 }
3699
3700 /* set the thumbnail stuff to nothing so we can test to see if they get set up */
3701 if (memcmp(CharBuf, "II", 2) == 0) {
3702 ImageInfo->motorola_intel = 0;
3703 } else if (memcmp(CharBuf, "MM", 2) == 0) {
3704 ImageInfo->motorola_intel = 1;
3705 } else {
3706 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF alignment marker");
3707 return;
3708 }
3709
3710 /* Check the next two values for correctness. */
3711 if (length < 8) {
3712 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF start (1)");
3713 return;
3714 }
3715 exif_value_2a = php_ifd_get16u(CharBuf+2, ImageInfo->motorola_intel);
3716 offset_of_ifd = php_ifd_get32u(CharBuf+4, ImageInfo->motorola_intel);
3717 if (exif_value_2a != 0x2a || offset_of_ifd < 0x08) {
3718 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF start (1)");
3719 return;
3720 }
3721 if (offset_of_ifd > length) {
3722 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid IFD start");
3723 return;
3724 }
3725
3726 ImageInfo->sections_found |= FOUND_IFD0;
3727 /* First directory starts at offset 8. Offsets starts at 0. */
3728 exif_process_IFD_in_JPEG(ImageInfo, CharBuf+offset_of_ifd, CharBuf, length/*-14*/, displacement, SECTION_IFD0, 0);
3729
3730 #ifdef EXIF_DEBUG
3731 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process TIFF in JPEG done");
3732 #endif
3733
3734 /* Compute the CCD width, in milimeters. */
3735 if (ImageInfo->FocalplaneXRes != 0) {
3736 ImageInfo->CCDWidth = (float)(ImageInfo->ExifImageWidth * ImageInfo->FocalplaneUnits / ImageInfo->FocalplaneXRes);
3737 }
3738 }
3739 /* }}} */
3740
3741 /* {{{ exif_process_APP1
3742 Process an JPEG APP1 block marker
3743 Describes all the drivel that most digital cameras include...
3744 */
exif_process_APP1(image_info_type * ImageInfo,char * CharBuf,size_t length,size_t displacement)3745 static void exif_process_APP1(image_info_type *ImageInfo, char *CharBuf, size_t length, size_t displacement)
3746 {
3747 /* Check the APP1 for Exif Identifier Code */
3748 static const uchar ExifHeader[] = {0x45, 0x78, 0x69, 0x66, 0x00, 0x00};
3749 if (length <= 8 || memcmp(CharBuf+2, ExifHeader, 6)) {
3750 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Incorrect APP1 Exif Identifier Code");
3751 return;
3752 }
3753 exif_process_TIFF_in_JPEG(ImageInfo, CharBuf + 8, length - 8, displacement+8);
3754 #ifdef EXIF_DEBUG
3755 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process APP1/EXIF done");
3756 #endif
3757 }
3758 /* }}} */
3759
3760 /* {{{ exif_process_APP12
3761 Process an JPEG APP12 block marker used by OLYMPUS
3762 */
exif_process_APP12(image_info_type * ImageInfo,char * buffer,size_t length)3763 static void exif_process_APP12(image_info_type *ImageInfo, char *buffer, size_t length)
3764 {
3765 size_t l1, l2=0;
3766
3767 if ((l1 = php_strnlen(buffer+2, length-2)) > 0) {
3768 exif_iif_add_tag(ImageInfo, SECTION_APP12, "Company", TAG_NONE, TAG_FMT_STRING, l1, buffer+2, l1);
3769 if (length > 2+l1+1) {
3770 l2 = php_strnlen(buffer+2+l1+1, length-2-l1-1);
3771 exif_iif_add_tag(ImageInfo, SECTION_APP12, "Info", TAG_NONE, TAG_FMT_STRING, l2, buffer+2+l1+1, l2);
3772 }
3773 }
3774 #ifdef EXIF_DEBUG
3775 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process section APP12 with l1=%d, l2=%d done", l1, l2);
3776 #endif
3777 }
3778 /* }}} */
3779
3780 /* {{{ exif_scan_JPEG_header
3781 * Parse the marker stream until SOS or EOI is seen; */
exif_scan_JPEG_header(image_info_type * ImageInfo)3782 static int exif_scan_JPEG_header(image_info_type *ImageInfo)
3783 {
3784 int section, sn;
3785 int marker = 0, last_marker = M_PSEUDO, comment_correction=1;
3786 unsigned int ll, lh;
3787 uchar *Data;
3788 size_t fpos, size, got, itemlen;
3789 jpeg_sof_info sof_info;
3790
3791 for(section=0;;section++) {
3792 #ifdef EXIF_DEBUG
3793 fpos = php_stream_tell(ImageInfo->infile);
3794 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Needing section %d @ 0x%08X", ImageInfo->file.count, fpos);
3795 #endif
3796
3797 /* get marker byte, swallowing possible padding */
3798 /* some software does not count the length bytes of COM section */
3799 /* one company doing so is very much envolved in JPEG... so we accept too */
3800 if (last_marker==M_COM && comment_correction) {
3801 comment_correction = 2;
3802 }
3803 do {
3804 if ((marker = php_stream_getc(ImageInfo->infile)) == EOF) {
3805 EXIF_ERRLOG_CORRUPT(ImageInfo)
3806 return FALSE;
3807 }
3808 if (last_marker==M_COM && comment_correction>0) {
3809 if (marker!=0xFF) {
3810 marker = 0xff;
3811 comment_correction--;
3812 } else {
3813 last_marker = M_PSEUDO; /* stop skipping 0 for M_COM */
3814 }
3815 }
3816 } while (marker == 0xff);
3817 if (last_marker==M_COM && !comment_correction) {
3818 exif_error_docref("exif_read_data#error_mcom" EXIFERR_CC, ImageInfo, E_NOTICE, "Image has corrupt COM section: some software set wrong length information");
3819 }
3820 if (last_marker==M_COM && comment_correction)
3821 return M_EOI; /* ah illegal: char after COM section not 0xFF */
3822
3823 fpos = php_stream_tell(ImageInfo->infile);
3824
3825 if (marker == 0xff) {
3826 /* 0xff is legal padding, but if we get that many, something's wrong. */
3827 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "To many padding bytes");
3828 return FALSE;
3829 }
3830
3831 /* Read the length of the section. */
3832 if ((lh = php_stream_getc(ImageInfo->infile)) == (unsigned int)EOF) {
3833 EXIF_ERRLOG_CORRUPT(ImageInfo)
3834 return FALSE;
3835 }
3836 if ((ll = php_stream_getc(ImageInfo->infile)) == (unsigned int)EOF) {
3837 EXIF_ERRLOG_CORRUPT(ImageInfo)
3838 return FALSE;
3839 }
3840
3841 itemlen = (lh << 8) | ll;
3842
3843 if (itemlen < 2) {
3844 #ifdef EXIF_DEBUG
3845 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s, Section length: 0x%02X%02X", EXIF_ERROR_CORRUPT, lh, ll);
3846 #else
3847 EXIF_ERRLOG_CORRUPT(ImageInfo)
3848 #endif
3849 return FALSE;
3850 }
3851
3852 sn = exif_file_sections_add(ImageInfo, marker, itemlen, NULL);
3853 Data = ImageInfo->file.list[sn].data;
3854
3855 /* Store first two pre-read bytes. */
3856 Data[0] = (uchar)lh;
3857 Data[1] = (uchar)ll;
3858
3859 got = php_stream_read(ImageInfo->infile, (char*)(Data+2), itemlen-2); /* Read the whole section. */
3860 if (got != itemlen-2) {
3861 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error reading from file: got=x%04X(=%d) != itemlen-2=x%04X(=%d)", got, got, itemlen-2, itemlen-2);
3862 return FALSE;
3863 }
3864
3865 #ifdef EXIF_DEBUG
3866 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process section(x%02X=%s) @ x%04X + x%04X(=%d)", marker, exif_get_markername(marker), fpos, itemlen, itemlen);
3867 #endif
3868 switch(marker) {
3869 case M_SOS: /* stop before hitting compressed data */
3870 /* If reading entire image is requested, read the rest of the data. */
3871 if (ImageInfo->read_all) {
3872 /* Determine how much file is left. */
3873 fpos = php_stream_tell(ImageInfo->infile);
3874 size = ImageInfo->FileSize - fpos;
3875 sn = exif_file_sections_add(ImageInfo, M_PSEUDO, size, NULL);
3876 Data = ImageInfo->file.list[sn].data;
3877 got = php_stream_read(ImageInfo->infile, (char*)Data, size);
3878 if (got != size) {
3879 EXIF_ERRLOG_FILEEOF(ImageInfo)
3880 return FALSE;
3881 }
3882 }
3883 return TRUE;
3884
3885 case M_EOI: /* in case it's a tables-only JPEG stream */
3886 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "No image in jpeg!");
3887 return (ImageInfo->sections_found&(~FOUND_COMPUTED)) ? TRUE : FALSE;
3888
3889 case M_COM: /* Comment section */
3890 exif_process_COM(ImageInfo, (char *)Data, itemlen);
3891 break;
3892
3893 case M_EXIF:
3894 if (!(ImageInfo->sections_found&FOUND_IFD0)) {
3895 /*ImageInfo->sections_found |= FOUND_EXIF;*/
3896 /* Seen files from some 'U-lead' software with Vivitar scanner
3897 that uses marker 31 later in the file (no clue what for!) */
3898 exif_process_APP1(ImageInfo, (char *)Data, itemlen, fpos);
3899 }
3900 break;
3901
3902 case M_APP12:
3903 exif_process_APP12(ImageInfo, (char *)Data, itemlen);
3904 break;
3905
3906
3907 case M_SOF0:
3908 case M_SOF1:
3909 case M_SOF2:
3910 case M_SOF3:
3911 case M_SOF5:
3912 case M_SOF6:
3913 case M_SOF7:
3914 case M_SOF9:
3915 case M_SOF10:
3916 case M_SOF11:
3917 case M_SOF13:
3918 case M_SOF14:
3919 case M_SOF15:
3920 if ((itemlen - 2) < 6) {
3921 return FALSE;
3922 }
3923
3924 exif_process_SOFn(Data, marker, &sof_info);
3925 ImageInfo->Width = sof_info.width;
3926 ImageInfo->Height = sof_info.height;
3927 if (sof_info.num_components == 3) {
3928 ImageInfo->IsColor = 1;
3929 } else {
3930 ImageInfo->IsColor = 0;
3931 }
3932 break;
3933 default:
3934 /* skip any other marker silently. */
3935 break;
3936 }
3937
3938 /* keep track of last marker */
3939 last_marker = marker;
3940 }
3941 #ifdef EXIF_DEBUG
3942 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Done");
3943 #endif
3944 return TRUE;
3945 }
3946 /* }}} */
3947
3948 /* {{{ exif_scan_thumbnail
3949 * scan JPEG in thumbnail (memory) */
exif_scan_thumbnail(image_info_type * ImageInfo)3950 static int exif_scan_thumbnail(image_info_type *ImageInfo)
3951 {
3952 uchar c, *data = (uchar*)ImageInfo->Thumbnail.data;
3953 int n, marker;
3954 size_t length=2, pos=0;
3955 jpeg_sof_info sof_info;
3956
3957 if (!data || ImageInfo->Thumbnail.size < 4) {
3958 return FALSE; /* nothing to do here */
3959 }
3960 if (memcmp(data, "\xFF\xD8\xFF", 3)) {
3961 if (!ImageInfo->Thumbnail.width && !ImageInfo->Thumbnail.height) {
3962 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Thumbnail is not a JPEG image");
3963 }
3964 return FALSE;
3965 }
3966 for (;;) {
3967 pos += length;
3968 if (pos>=ImageInfo->Thumbnail.size)
3969 return FALSE;
3970 c = data[pos++];
3971 if (pos>=ImageInfo->Thumbnail.size)
3972 return FALSE;
3973 if (c != 0xFF) {
3974 return FALSE;
3975 }
3976 n = 8;
3977 while ((c = data[pos++]) == 0xFF && n--) {
3978 if (pos+3>=ImageInfo->Thumbnail.size)
3979 return FALSE;
3980 /* +3 = pos++ of next check when reaching marker + 2 bytes for length */
3981 }
3982 if (c == 0xFF)
3983 return FALSE;
3984 marker = c;
3985 if (pos>=ImageInfo->Thumbnail.size)
3986 return FALSE;
3987 length = php_jpg_get16(data+pos);
3988 if (length > ImageInfo->Thumbnail.size || pos >= ImageInfo->Thumbnail.size - length) {
3989 return FALSE;
3990 }
3991 #ifdef EXIF_DEBUG
3992 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: process section(x%02X=%s) @ x%04X + x%04X", marker, exif_get_markername(marker), pos, length);
3993 #endif
3994 switch (marker) {
3995 case M_SOF0:
3996 case M_SOF1:
3997 case M_SOF2:
3998 case M_SOF3:
3999 case M_SOF5:
4000 case M_SOF6:
4001 case M_SOF7:
4002 case M_SOF9:
4003 case M_SOF10:
4004 case M_SOF11:
4005 case M_SOF13:
4006 case M_SOF14:
4007 case M_SOF15:
4008 /* handle SOFn block */
4009 if (length < 8 || ImageInfo->Thumbnail.size - 8 < pos) {
4010 /* exif_process_SOFn needs 8 bytes */
4011 return FALSE;
4012 }
4013 exif_process_SOFn(data+pos, marker, &sof_info);
4014 ImageInfo->Thumbnail.height = sof_info.height;
4015 ImageInfo->Thumbnail.width = sof_info.width;
4016 #ifdef EXIF_DEBUG
4017 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: size: %d * %d", sof_info.width, sof_info.height);
4018 #endif
4019 return TRUE;
4020
4021 case M_SOS:
4022 case M_EOI:
4023 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Could not compute size of thumbnail");
4024 return FALSE;
4025 break;
4026
4027 default:
4028 /* just skip */
4029 break;
4030 }
4031 }
4032
4033 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Could not compute size of thumbnail");
4034 return FALSE;
4035 }
4036 /* }}} */
4037
4038 /* {{{ exif_process_IFD_in_TIFF
4039 * Parse the TIFF header; */
exif_process_IFD_in_TIFF(image_info_type * ImageInfo,size_t dir_offset,int section_index)4040 static int exif_process_IFD_in_TIFF(image_info_type *ImageInfo, size_t dir_offset, int section_index)
4041 {
4042 int i, sn, num_entries, sub_section_index = 0;
4043 unsigned char *dir_entry;
4044 char tagname[64];
4045 size_t ifd_size, dir_size, entry_offset, next_offset, entry_length, entry_value=0, fgot;
4046 int entry_tag , entry_type;
4047 tag_table_type tag_table = exif_get_tag_table(section_index);
4048
4049 if (ImageInfo->ifd_nesting_level > MAX_IFD_NESTING_LEVEL) {
4050 return FALSE;
4051 }
4052
4053 if (ImageInfo->FileSize >= 2 && ImageInfo->FileSize - 2 >= dir_offset) {
4054 sn = exif_file_sections_add(ImageInfo, M_PSEUDO, 2, NULL);
4055 #ifdef EXIF_DEBUG
4056 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF: filesize(x%04X), IFD dir(x%04X + x%04X)", ImageInfo->FileSize, dir_offset, 2);
4057 #endif
4058 php_stream_seek(ImageInfo->infile, dir_offset, SEEK_SET); /* we do not know the order of sections */
4059 php_stream_read(ImageInfo->infile, (char*)ImageInfo->file.list[sn].data, 2);
4060 num_entries = php_ifd_get16u(ImageInfo->file.list[sn].data, ImageInfo->motorola_intel);
4061 dir_size = 2/*num dir entries*/ +12/*length of entry*/*(size_t)num_entries +4/* offset to next ifd (points to thumbnail or NULL)*/;
4062 if (ImageInfo->FileSize >= dir_size && ImageInfo->FileSize - dir_size >= dir_offset) {
4063 #ifdef EXIF_DEBUG
4064 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF: filesize(x%04X), IFD dir(x%04X + x%04X), IFD entries(%d)", ImageInfo->FileSize, dir_offset+2, dir_size-2, num_entries);
4065 #endif
4066 if (exif_file_sections_realloc(ImageInfo, sn, dir_size)) {
4067 return FALSE;
4068 }
4069 php_stream_read(ImageInfo->infile, (char*)(ImageInfo->file.list[sn].data+2), dir_size-2);
4070 /*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Dump: %s", exif_char_dump(ImageInfo->file.list[sn].data, dir_size, 0));*/
4071 next_offset = php_ifd_get32u(ImageInfo->file.list[sn].data + dir_size - 4, ImageInfo->motorola_intel);
4072 #ifdef EXIF_DEBUG
4073 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF done, next offset x%04X", next_offset);
4074 #endif
4075 /* now we have the directory we can look how long it should be */
4076 ifd_size = dir_size;
4077 for(i=0;i<num_entries;i++) {
4078 dir_entry = ImageInfo->file.list[sn].data+2+i*12;
4079 entry_tag = php_ifd_get16u(dir_entry+0, ImageInfo->motorola_intel);
4080 entry_type = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
4081 if (entry_type > NUM_FORMATS) {
4082 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF: tag(0x%04X,%12s): Illegal format code 0x%04X, switching to BYTE", entry_tag, exif_get_tagname(entry_tag, tagname, -12, tag_table), entry_type);
4083 /* Since this is repeated in exif_process_IFD_TAG make it a notice here */
4084 /* and make it a warning in the exif_process_IFD_TAG which is called */
4085 /* elsewhere. */
4086 entry_type = TAG_FMT_BYTE;
4087 /*The next line would break the image on writeback: */
4088 /* php_ifd_set16u(dir_entry+2, entry_type, ImageInfo->motorola_intel);*/
4089 }
4090 entry_length = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel) * php_tiff_bytes_per_format[entry_type];
4091 if (entry_length <= 4) {
4092 switch(entry_type) {
4093 case TAG_FMT_USHORT:
4094 entry_value = php_ifd_get16u(dir_entry+8, ImageInfo->motorola_intel);
4095 break;
4096 case TAG_FMT_SSHORT:
4097 entry_value = php_ifd_get16s(dir_entry+8, ImageInfo->motorola_intel);
4098 break;
4099 case TAG_FMT_ULONG:
4100 entry_value = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
4101 break;
4102 case TAG_FMT_SLONG:
4103 entry_value = php_ifd_get32s(dir_entry+8, ImageInfo->motorola_intel);
4104 break;
4105 }
4106 switch(entry_tag) {
4107 case TAG_IMAGEWIDTH:
4108 case TAG_COMP_IMAGE_WIDTH:
4109 ImageInfo->Width = entry_value;
4110 break;
4111 case TAG_IMAGEHEIGHT:
4112 case TAG_COMP_IMAGE_HEIGHT:
4113 ImageInfo->Height = entry_value;
4114 break;
4115 case TAG_PHOTOMETRIC_INTERPRETATION:
4116 switch (entry_value) {
4117 case PMI_BLACK_IS_ZERO:
4118 case PMI_WHITE_IS_ZERO:
4119 case PMI_TRANSPARENCY_MASK:
4120 ImageInfo->IsColor = 0;
4121 break;
4122 case PMI_RGB:
4123 case PMI_PALETTE_COLOR:
4124 case PMI_SEPARATED:
4125 case PMI_YCBCR:
4126 case PMI_CIELAB:
4127 ImageInfo->IsColor = 1;
4128 break;
4129 }
4130 break;
4131 }
4132 } else {
4133 entry_offset = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
4134 /* if entry needs expading ifd cache and entry is at end of current ifd cache. */
4135 /* otherwise there may be huge holes between two entries */
4136 if (entry_offset + entry_length > dir_offset + ifd_size
4137 && entry_offset == dir_offset + ifd_size) {
4138 ifd_size = entry_offset + entry_length - dir_offset;
4139 #ifdef EXIF_DEBUG
4140 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Resize struct: x%04X + x%04X - x%04X = x%04X", entry_offset, entry_length, dir_offset, ifd_size);
4141 #endif
4142 }
4143 }
4144 }
4145 if (ImageInfo->FileSize >= ImageInfo->file.list[sn].size && ImageInfo->FileSize - ImageInfo->file.list[sn].size >= dir_offset) {
4146 if (ifd_size > dir_size) {
4147 if (ImageInfo->FileSize < ifd_size || dir_offset > ImageInfo->FileSize - ifd_size) {
4148 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error in TIFF: filesize(x%04X) less than size of IFD(x%04X + x%04X)", ImageInfo->FileSize, dir_offset, ifd_size);
4149 return FALSE;
4150 }
4151 if (exif_file_sections_realloc(ImageInfo, sn, ifd_size)) {
4152 return FALSE;
4153 }
4154 /* read values not stored in directory itself */
4155 #ifdef EXIF_DEBUG
4156 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF: filesize(x%04X), IFD(x%04X + x%04X)", ImageInfo->FileSize, dir_offset, ifd_size);
4157 #endif
4158 php_stream_read(ImageInfo->infile, (char*)(ImageInfo->file.list[sn].data+dir_size), ifd_size-dir_size);
4159 #ifdef EXIF_DEBUG
4160 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF, done");
4161 #endif
4162 }
4163 /* now process the tags */
4164 for(i=0;i<num_entries;i++) {
4165 dir_entry = ImageInfo->file.list[sn].data+2+i*12;
4166 entry_tag = php_ifd_get16u(dir_entry+0, ImageInfo->motorola_intel);
4167 entry_type = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
4168 /*entry_length = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel);*/
4169 if (entry_tag == TAG_EXIF_IFD_POINTER ||
4170 entry_tag == TAG_INTEROP_IFD_POINTER ||
4171 entry_tag == TAG_GPS_IFD_POINTER ||
4172 entry_tag == TAG_SUB_IFD
4173 ) {
4174 switch(entry_tag) {
4175 case TAG_EXIF_IFD_POINTER:
4176 ImageInfo->sections_found |= FOUND_EXIF;
4177 sub_section_index = SECTION_EXIF;
4178 break;
4179 case TAG_GPS_IFD_POINTER:
4180 ImageInfo->sections_found |= FOUND_GPS;
4181 sub_section_index = SECTION_GPS;
4182 break;
4183 case TAG_INTEROP_IFD_POINTER:
4184 ImageInfo->sections_found |= FOUND_INTEROP;
4185 sub_section_index = SECTION_INTEROP;
4186 break;
4187 case TAG_SUB_IFD:
4188 ImageInfo->sections_found |= FOUND_THUMBNAIL;
4189 sub_section_index = SECTION_THUMBNAIL;
4190 break;
4191 }
4192 entry_offset = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
4193 #ifdef EXIF_DEBUG
4194 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Next IFD: %s @x%04X", exif_get_sectionname(sub_section_index), entry_offset);
4195 #endif
4196 ImageInfo->ifd_nesting_level++;
4197 exif_process_IFD_in_TIFF(ImageInfo, entry_offset, sub_section_index);
4198 if (section_index!=SECTION_THUMBNAIL && entry_tag==TAG_SUB_IFD) {
4199 if (ImageInfo->Thumbnail.filetype != IMAGE_FILETYPE_UNKNOWN
4200 && ImageInfo->Thumbnail.size
4201 && ImageInfo->Thumbnail.offset
4202 && ImageInfo->read_thumbnail
4203 ) {
4204 #ifdef EXIF_DEBUG
4205 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "%s THUMBNAIL @0x%04X + 0x%04X", ImageInfo->Thumbnail.data ? "Ignore" : "Read", ImageInfo->Thumbnail.offset, ImageInfo->Thumbnail.size);
4206 #endif
4207 if (!ImageInfo->Thumbnail.data) {
4208 ImageInfo->Thumbnail.data = safe_emalloc(ImageInfo->Thumbnail.size, 1, 0);
4209 php_stream_seek(ImageInfo->infile, ImageInfo->Thumbnail.offset, SEEK_SET);
4210 fgot = php_stream_read(ImageInfo->infile, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
4211 if (fgot < ImageInfo->Thumbnail.size) {
4212 EXIF_ERRLOG_THUMBEOF(ImageInfo)
4213 efree(ImageInfo->Thumbnail.data);
4214
4215 ImageInfo->Thumbnail.data = NULL;
4216 } else {
4217 exif_thumbnail_build(ImageInfo);
4218 }
4219 }
4220 }
4221 }
4222 #ifdef EXIF_DEBUG
4223 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Next IFD: %s done", exif_get_sectionname(sub_section_index));
4224 #endif
4225 } else {
4226 if (!exif_process_IFD_TAG(ImageInfo, (char*)dir_entry,
4227 (char*)(ImageInfo->file.list[sn].data-dir_offset),
4228 ifd_size, 0, section_index, 0, tag_table)) {
4229 return FALSE;
4230 }
4231 }
4232 }
4233 /* If we had a thumbnail in a SUB_IFD we have ANOTHER image in NEXT IFD */
4234 if (next_offset && section_index != SECTION_THUMBNAIL) {
4235 /* this should be a thumbnail IFD */
4236 /* the thumbnail itself is stored at Tag=StripOffsets */
4237 #ifdef EXIF_DEBUG
4238 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read next IFD (THUMBNAIL) at x%04X", next_offset);
4239 #endif
4240 ImageInfo->ifd_nesting_level++;
4241 exif_process_IFD_in_TIFF(ImageInfo, next_offset, SECTION_THUMBNAIL);
4242 #ifdef EXIF_DEBUG
4243 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "%s THUMBNAIL @0x%04X + 0x%04X", ImageInfo->Thumbnail.data ? "Ignore" : "Read", ImageInfo->Thumbnail.offset, ImageInfo->Thumbnail.size);
4244 #endif
4245 if (!ImageInfo->Thumbnail.data && ImageInfo->Thumbnail.offset && ImageInfo->Thumbnail.size && ImageInfo->read_thumbnail) {
4246 ImageInfo->Thumbnail.data = safe_emalloc(ImageInfo->Thumbnail.size, 1, 0);
4247 php_stream_seek(ImageInfo->infile, ImageInfo->Thumbnail.offset, SEEK_SET);
4248 fgot = php_stream_read(ImageInfo->infile, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
4249 if (fgot < ImageInfo->Thumbnail.size) {
4250 EXIF_ERRLOG_THUMBEOF(ImageInfo)
4251 efree(ImageInfo->Thumbnail.data);
4252 ImageInfo->Thumbnail.data = NULL;
4253 } else {
4254 exif_thumbnail_build(ImageInfo);
4255 }
4256 }
4257 #ifdef EXIF_DEBUG
4258 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read next IFD (THUMBNAIL) done");
4259 #endif
4260 }
4261 return TRUE;
4262 } else {
4263 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error in TIFF: filesize(x%04X) less than size of IFD(x%04X)", ImageInfo->FileSize, dir_offset+ImageInfo->file.list[sn].size);
4264 return FALSE;
4265 }
4266 } else {
4267 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error in TIFF: filesize(x%04X) less than size of IFD dir(x%04X)", ImageInfo->FileSize, dir_offset+dir_size);
4268 return FALSE;
4269 }
4270 } else {
4271 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error in TIFF: filesize(x%04X) less than start of IFD dir(x%04X)", ImageInfo->FileSize, dir_offset+2);
4272 return FALSE;
4273 }
4274 }
4275 /* }}} */
4276
4277 /* {{{ exif_scan_FILE_header
4278 * Parse the marker stream until SOS or EOI is seen; */
exif_scan_FILE_header(image_info_type * ImageInfo)4279 static int exif_scan_FILE_header(image_info_type *ImageInfo)
4280 {
4281 unsigned char file_header[8];
4282 int ret = FALSE;
4283
4284 ImageInfo->FileType = IMAGE_FILETYPE_UNKNOWN;
4285
4286 if (ImageInfo->FileSize >= 2) {
4287 php_stream_seek(ImageInfo->infile, 0, SEEK_SET);
4288 if (php_stream_read(ImageInfo->infile, (char*)file_header, 2) != 2) {
4289 return FALSE;
4290 }
4291 if ((file_header[0]==0xff) && (file_header[1]==M_SOI)) {
4292 ImageInfo->FileType = IMAGE_FILETYPE_JPEG;
4293 if (exif_scan_JPEG_header(ImageInfo)) {
4294 ret = TRUE;
4295 } else {
4296 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid JPEG file");
4297 }
4298 } else if (ImageInfo->FileSize >= 8) {
4299 if (php_stream_read(ImageInfo->infile, (char*)(file_header+2), 6) != 6) {
4300 return FALSE;
4301 }
4302 if (!memcmp(file_header, "II\x2A\x00", 4)) {
4303 ImageInfo->FileType = IMAGE_FILETYPE_TIFF_II;
4304 ImageInfo->motorola_intel = 0;
4305 #ifdef EXIF_DEBUG
4306 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "File has TIFF/II format");
4307 #endif
4308 ImageInfo->sections_found |= FOUND_IFD0;
4309 if (exif_process_IFD_in_TIFF(ImageInfo,
4310 php_ifd_get32u(file_header + 4, ImageInfo->motorola_intel),
4311 SECTION_IFD0)) {
4312 ret = TRUE;
4313 } else {
4314 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF file");
4315 }
4316 } else if (!memcmp(file_header, "MM\x00\x2a", 4)) {
4317 ImageInfo->FileType = IMAGE_FILETYPE_TIFF_MM;
4318 ImageInfo->motorola_intel = 1;
4319 #ifdef EXIF_DEBUG
4320 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "File has TIFF/MM format");
4321 #endif
4322 ImageInfo->sections_found |= FOUND_IFD0;
4323 if (exif_process_IFD_in_TIFF(ImageInfo,
4324 php_ifd_get32u(file_header + 4, ImageInfo->motorola_intel),
4325 SECTION_IFD0)) {
4326 ret = TRUE;
4327 } else {
4328 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF file");
4329 }
4330 } else {
4331 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "File not supported");
4332 return FALSE;
4333 }
4334 }
4335 } else {
4336 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "File too small (%d)", ImageInfo->FileSize);
4337 }
4338 return ret;
4339 }
4340 /* }}} */
4341
4342 /* {{{ exif_discard_imageinfo
4343 Discard data scanned by exif_read_file.
4344 */
exif_discard_imageinfo(image_info_type * ImageInfo)4345 static int exif_discard_imageinfo(image_info_type *ImageInfo)
4346 {
4347 int i;
4348
4349 EFREE_IF(ImageInfo->FileName);
4350 EFREE_IF(ImageInfo->UserComment);
4351 EFREE_IF(ImageInfo->UserCommentEncoding);
4352 EFREE_IF(ImageInfo->Copyright);
4353 EFREE_IF(ImageInfo->CopyrightPhotographer);
4354 EFREE_IF(ImageInfo->CopyrightEditor);
4355 EFREE_IF(ImageInfo->Thumbnail.data);
4356 EFREE_IF(ImageInfo->encode_unicode);
4357 EFREE_IF(ImageInfo->decode_unicode_be);
4358 EFREE_IF(ImageInfo->decode_unicode_le);
4359 EFREE_IF(ImageInfo->encode_jis);
4360 EFREE_IF(ImageInfo->decode_jis_be);
4361 EFREE_IF(ImageInfo->decode_jis_le);
4362 EFREE_IF(ImageInfo->make);
4363 EFREE_IF(ImageInfo->model);
4364 for (i=0; i<ImageInfo->xp_fields.count; i++) {
4365 EFREE_IF(ImageInfo->xp_fields.list[i].value);
4366 }
4367 EFREE_IF(ImageInfo->xp_fields.list);
4368 for (i=0; i<SECTION_COUNT; i++) {
4369 exif_iif_free(ImageInfo, i);
4370 }
4371 exif_file_sections_free(ImageInfo);
4372 memset(ImageInfo, 0, sizeof(*ImageInfo));
4373 return TRUE;
4374 }
4375 /* }}} */
4376
4377 /* {{{ exif_read_from_impl
4378 */
exif_read_from_impl(image_info_type * ImageInfo,php_stream * stream,int read_thumbnail,int read_all)4379 static int exif_read_from_impl(image_info_type *ImageInfo, php_stream *stream, int read_thumbnail, int read_all)
4380 {
4381 int ret;
4382 zend_stat_t st;
4383
4384 /* Start with an empty image information structure. */
4385 memset(ImageInfo, 0, sizeof(*ImageInfo));
4386
4387 ImageInfo->motorola_intel = -1; /* flag as unknown */
4388 ImageInfo->infile = stream;
4389 ImageInfo->FileName = NULL;
4390
4391 if (php_stream_is(ImageInfo->infile, PHP_STREAM_IS_STDIO)) {
4392 if (VCWD_STAT(stream->orig_path, &st) >= 0) {
4393 zend_string *base;
4394 if ((st.st_mode & S_IFMT) != S_IFREG) {
4395 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Not a file");
4396 ImageInfo->infile = NULL;
4397 return FALSE;
4398 }
4399
4400 /* Store file name */
4401 base = php_basename(stream->orig_path, strlen(stream->orig_path), NULL, 0);
4402 ImageInfo->FileName = estrndup(ZSTR_VAL(base), ZSTR_LEN(base));
4403
4404 zend_string_release(base);
4405
4406 /* Store file date/time. */
4407 ImageInfo->FileDateTime = st.st_mtime;
4408 ImageInfo->FileSize = st.st_size;
4409 /*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Opened stream is file: %d", ImageInfo->FileSize);*/
4410 }
4411 } else {
4412 if (!ImageInfo->FileSize) {
4413 php_stream_seek(ImageInfo->infile, 0, SEEK_END);
4414 ImageInfo->FileSize = php_stream_tell(ImageInfo->infile);
4415 php_stream_seek(ImageInfo->infile, 0, SEEK_SET);
4416 }
4417 }
4418
4419 ImageInfo->read_thumbnail = read_thumbnail;
4420 ImageInfo->read_all = read_all;
4421 ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_UNKNOWN;
4422
4423 ImageInfo->encode_unicode = estrdup(EXIF_G(encode_unicode));
4424 ImageInfo->decode_unicode_be = estrdup(EXIF_G(decode_unicode_be));
4425 ImageInfo->decode_unicode_le = estrdup(EXIF_G(decode_unicode_le));
4426 ImageInfo->encode_jis = estrdup(EXIF_G(encode_jis));
4427 ImageInfo->decode_jis_be = estrdup(EXIF_G(decode_jis_be));
4428 ImageInfo->decode_jis_le = estrdup(EXIF_G(decode_jis_le));
4429
4430
4431 ImageInfo->ifd_nesting_level = 0;
4432
4433 /* Scan the headers */
4434 ret = exif_scan_FILE_header(ImageInfo);
4435
4436 return ret;
4437 }
4438 /* }}} */
4439
4440 /* {{{ exif_read_from_stream
4441 */
exif_read_from_stream(image_info_type * ImageInfo,php_stream * stream,int read_thumbnail,int read_all)4442 static int exif_read_from_stream(image_info_type *ImageInfo, php_stream *stream, int read_thumbnail, int read_all)
4443 {
4444 int ret;
4445 off_t old_pos = php_stream_tell(stream);
4446
4447 if (old_pos) {
4448 php_stream_seek(stream, 0, SEEK_SET);
4449 }
4450
4451 ret = exif_read_from_impl(ImageInfo, stream, read_thumbnail, read_all);
4452
4453 if (old_pos) {
4454 php_stream_seek(stream, old_pos, SEEK_SET);
4455 }
4456
4457 return ret;
4458 }
4459 /* }}} */
4460
4461 /* {{{ exif_read_from_file
4462 */
exif_read_from_file(image_info_type * ImageInfo,char * FileName,int read_thumbnail,int read_all)4463 static int exif_read_from_file(image_info_type *ImageInfo, char *FileName, int read_thumbnail, int read_all)
4464 {
4465 int ret;
4466 php_stream *stream;
4467
4468 stream = php_stream_open_wrapper(FileName, "rb", STREAM_MUST_SEEK | IGNORE_PATH, NULL);
4469
4470 if (!stream) {
4471 memset(&ImageInfo, 0, sizeof(ImageInfo));
4472
4473 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Unable to open file");
4474
4475 return FALSE;
4476 }
4477
4478 ret = exif_read_from_stream(ImageInfo, stream, read_thumbnail, read_all);
4479
4480 php_stream_close(stream);
4481
4482 return ret;
4483 }
4484 /* }}} */
4485
4486 /* {{{ proto array exif_read_data(mixed stream [, string sections_needed [, bool sub_arrays[, bool read_thumbnail]]])
4487 Reads header data from an image and optionally reads the internal thumbnails */
PHP_FUNCTION(exif_read_data)4488 PHP_FUNCTION(exif_read_data)
4489 {
4490 zend_string *z_sections_needed = NULL;
4491 zend_bool sub_arrays = 0, read_thumbnail = 0, read_all = 0;
4492 zval *stream;
4493 int i, ret, sections_needed = 0;
4494 image_info_type ImageInfo;
4495 char tmp[64], *sections_str, *s;
4496
4497 /* Parse arguments */
4498 ZEND_PARSE_PARAMETERS_START(1, 4)
4499 Z_PARAM_ZVAL(stream)
4500 Z_PARAM_OPTIONAL
4501 Z_PARAM_STR(z_sections_needed)
4502 Z_PARAM_BOOL(sub_arrays)
4503 Z_PARAM_BOOL(read_thumbnail)
4504 ZEND_PARSE_PARAMETERS_END();
4505
4506 memset(&ImageInfo, 0, sizeof(ImageInfo));
4507
4508 if (z_sections_needed) {
4509 spprintf(§ions_str, 0, ",%s,", ZSTR_VAL(z_sections_needed));
4510 /* sections_str DOES start with , and SPACES are NOT allowed in names */
4511 s = sections_str;
4512 while (*++s) {
4513 if (*s == ' ') {
4514 *s = ',';
4515 }
4516 }
4517
4518 for (i = 0; i < SECTION_COUNT; i++) {
4519 snprintf(tmp, sizeof(tmp), ",%s,", exif_get_sectionname(i));
4520 if (strstr(sections_str, tmp)) {
4521 sections_needed |= 1<<i;
4522 }
4523 }
4524 EFREE_IF(sections_str);
4525 /* now see what we need */
4526 #ifdef EXIF_DEBUG
4527 sections_str = exif_get_sectionlist(sections_needed);
4528 if (!sections_str) {
4529 RETURN_FALSE;
4530 }
4531 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Sections needed: %s", sections_str[0] ? sections_str : "None");
4532 EFREE_IF(sections_str);
4533 #endif
4534 }
4535
4536 if (Z_TYPE_P(stream) == IS_RESOURCE) {
4537 php_stream *p_stream = NULL;
4538
4539 php_stream_from_res(p_stream, Z_RES_P(stream));
4540
4541 ret = exif_read_from_stream(&ImageInfo, p_stream, read_thumbnail, read_all);
4542 } else {
4543 convert_to_string(stream);
4544
4545 if (!Z_STRLEN_P(stream)) {
4546 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_WARNING, "Filename cannot be empty");
4547
4548 RETURN_FALSE;
4549 }
4550
4551 ret = exif_read_from_file(&ImageInfo, Z_STRVAL_P(stream), read_thumbnail, read_all);
4552 }
4553
4554 sections_str = exif_get_sectionlist(ImageInfo.sections_found);
4555
4556 #ifdef EXIF_DEBUG
4557 if (sections_str) {
4558 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Sections found: %s", sections_str[0] ? sections_str : "None");
4559 }
4560 #endif
4561
4562 ImageInfo.sections_found |= FOUND_COMPUTED|FOUND_FILE;/* do not inform about in debug*/
4563
4564 if (ret == FALSE || (sections_needed && !(sections_needed&ImageInfo.sections_found))) {
4565 /* array_init must be checked at last! otherwise the array must be freed if a later test fails. */
4566 exif_discard_imageinfo(&ImageInfo);
4567 EFREE_IF(sections_str);
4568 RETURN_FALSE;
4569 }
4570
4571 array_init(return_value);
4572
4573 #ifdef EXIF_DEBUG
4574 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Generate section FILE");
4575 #endif
4576
4577 /* now we can add our information */
4578 exif_iif_add_str(&ImageInfo, SECTION_FILE, "FileName", ImageInfo.FileName);
4579 exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileDateTime", ImageInfo.FileDateTime);
4580 exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileSize", ImageInfo.FileSize);
4581 exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileType", ImageInfo.FileType);
4582 exif_iif_add_str(&ImageInfo, SECTION_FILE, "MimeType", (char*)php_image_type_to_mime_type(ImageInfo.FileType));
4583 exif_iif_add_str(&ImageInfo, SECTION_FILE, "SectionsFound", sections_str ? sections_str : "NONE");
4584
4585 #ifdef EXIF_DEBUG
4586 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Generate section COMPUTED");
4587 #endif
4588
4589 if (ImageInfo.Width>0 && ImageInfo.Height>0) {
4590 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "html" , "width=\"%d\" height=\"%d\"", ImageInfo.Width, ImageInfo.Height);
4591 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Height", ImageInfo.Height);
4592 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Width", ImageInfo.Width);
4593 }
4594 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "IsColor", ImageInfo.IsColor);
4595 if (ImageInfo.motorola_intel != -1) {
4596 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "ByteOrderMotorola", ImageInfo.motorola_intel);
4597 }
4598 if (ImageInfo.FocalLength) {
4599 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "FocalLength", "%4.1Fmm", ImageInfo.FocalLength);
4600 if(ImageInfo.CCDWidth) {
4601 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "35mmFocalLength", "%dmm", (int)(ImageInfo.FocalLength/ImageInfo.CCDWidth*35+0.5));
4602 }
4603 }
4604 if(ImageInfo.CCDWidth) {
4605 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "CCDWidth", "%dmm", (int)ImageInfo.CCDWidth);
4606 }
4607 if(ImageInfo.ExposureTime>0) {
4608 float recip_exposure_time = 0.5f + 1.0f/ImageInfo.ExposureTime;
4609 if (ImageInfo.ExposureTime <= 0.5 && recip_exposure_time < INT_MAX) {
4610 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ExposureTime", "%0.3F s (1/%d)", ImageInfo.ExposureTime, (int) recip_exposure_time);
4611 } else {
4612 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ExposureTime", "%0.3F s", ImageInfo.ExposureTime);
4613 }
4614 }
4615 if(ImageInfo.ApertureFNumber) {
4616 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ApertureFNumber", "f/%.1F", ImageInfo.ApertureFNumber);
4617 }
4618 if(ImageInfo.Distance) {
4619 if(ImageInfo.Distance<0) {
4620 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "FocusDistance", "Infinite");
4621 } else {
4622 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "FocusDistance", "%0.2Fm", ImageInfo.Distance);
4623 }
4624 }
4625 if (ImageInfo.UserComment) {
4626 exif_iif_add_buffer(&ImageInfo, SECTION_COMPUTED, "UserComment", ImageInfo.UserCommentLength, ImageInfo.UserComment);
4627 if (ImageInfo.UserCommentEncoding && strlen(ImageInfo.UserCommentEncoding)) {
4628 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "UserCommentEncoding", ImageInfo.UserCommentEncoding);
4629 }
4630 }
4631
4632 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright", ImageInfo.Copyright);
4633 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright.Photographer", ImageInfo.CopyrightPhotographer);
4634 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright.Editor", ImageInfo.CopyrightEditor);
4635
4636 for (i=0; i<ImageInfo.xp_fields.count; i++) {
4637 exif_iif_add_str(&ImageInfo, SECTION_WINXP, exif_get_tagname(ImageInfo.xp_fields.list[i].tag, NULL, 0, exif_get_tag_table(SECTION_WINXP)), ImageInfo.xp_fields.list[i].value);
4638 }
4639 if (ImageInfo.Thumbnail.size) {
4640 if (read_thumbnail) {
4641 /* not exif_iif_add_str : this is a buffer */
4642 exif_iif_add_tag(&ImageInfo, SECTION_THUMBNAIL, "THUMBNAIL", TAG_NONE, TAG_FMT_UNDEFINED, ImageInfo.Thumbnail.size, ImageInfo.Thumbnail.data, ImageInfo.Thumbnail.size);
4643 }
4644 if (!ImageInfo.Thumbnail.width || !ImageInfo.Thumbnail.height) {
4645 /* try to evaluate if thumbnail data is present */
4646 exif_scan_thumbnail(&ImageInfo);
4647 }
4648 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.FileType", ImageInfo.Thumbnail.filetype);
4649 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Thumbnail.MimeType", (char*)php_image_type_to_mime_type(ImageInfo.Thumbnail.filetype));
4650 }
4651 if (ImageInfo.Thumbnail.width && ImageInfo.Thumbnail.height) {
4652 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.Height", ImageInfo.Thumbnail.height);
4653 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.Width", ImageInfo.Thumbnail.width);
4654 }
4655 EFREE_IF(sections_str);
4656
4657 #ifdef EXIF_DEBUG
4658 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Adding image infos");
4659 #endif
4660
4661 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_FILE );
4662 add_assoc_image_info(return_value, 1, &ImageInfo, SECTION_COMPUTED );
4663 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_ANY_TAG );
4664 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_IFD0 );
4665 add_assoc_image_info(return_value, 1, &ImageInfo, SECTION_THUMBNAIL );
4666 add_assoc_image_info(return_value, 1, &ImageInfo, SECTION_COMMENT );
4667 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_EXIF );
4668 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_GPS );
4669 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_INTEROP );
4670 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_FPIX );
4671 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_APP12 );
4672 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_WINXP );
4673 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_MAKERNOTE );
4674
4675 #ifdef EXIF_DEBUG
4676 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Discarding info");
4677 #endif
4678
4679 exif_discard_imageinfo(&ImageInfo);
4680
4681 #ifdef EXIF_DEBUG
4682 php_error_docref1(NULL, (Z_TYPE_P(stream) == IS_RESOURCE ? "<stream>" : Z_STRVAL_P(stream)), E_NOTICE, "Done");
4683 #endif
4684 }
4685 /* }}} */
4686
4687 /* {{{ proto string exif_thumbnail(string filename [, &width, &height [, &imagetype]])
4688 Reads the embedded thumbnail */
PHP_FUNCTION(exif_thumbnail)4689 PHP_FUNCTION(exif_thumbnail)
4690 {
4691 int ret, arg_c = ZEND_NUM_ARGS();
4692 image_info_type ImageInfo;
4693 zval *stream;
4694 zval *z_width = NULL, *z_height = NULL, *z_imagetype = NULL;
4695
4696 /* Parse arguments */
4697 ZEND_PARSE_PARAMETERS_START(1, 4)
4698 Z_PARAM_ZVAL(stream)
4699 Z_PARAM_OPTIONAL
4700 Z_PARAM_ZVAL_DEREF(z_width)
4701 Z_PARAM_ZVAL_DEREF(z_height)
4702 Z_PARAM_ZVAL_DEREF(z_imagetype)
4703 ZEND_PARSE_PARAMETERS_END();
4704
4705 memset(&ImageInfo, 0, sizeof(ImageInfo));
4706
4707 if (Z_TYPE_P(stream) == IS_RESOURCE) {
4708 php_stream *p_stream = NULL;
4709
4710 php_stream_from_res(p_stream, Z_RES_P(stream));
4711
4712 ret = exif_read_from_stream(&ImageInfo, p_stream, 1, 0);
4713 } else {
4714 convert_to_string(stream);
4715
4716 if (!Z_STRLEN_P(stream)) {
4717 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_WARNING, "Filename cannot be empty");
4718
4719 RETURN_FALSE;
4720 }
4721
4722 ret = exif_read_from_file(&ImageInfo, Z_STRVAL_P(stream), 1, 0);
4723 }
4724
4725 if (ret == FALSE) {
4726 exif_discard_imageinfo(&ImageInfo);
4727 RETURN_FALSE;
4728 }
4729
4730 #ifdef EXIF_DEBUG
4731 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Thumbnail data %d %d %d, %d x %d", ImageInfo.Thumbnail.data, ImageInfo.Thumbnail.size, ImageInfo.Thumbnail.filetype, ImageInfo.Thumbnail.width, ImageInfo.Thumbnail.height);
4732 #endif
4733 if (!ImageInfo.Thumbnail.data || !ImageInfo.Thumbnail.size) {
4734 exif_discard_imageinfo(&ImageInfo);
4735 RETURN_FALSE;
4736 }
4737
4738 #ifdef EXIF_DEBUG
4739 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Returning thumbnail(%d)", ImageInfo.Thumbnail.size);
4740 #endif
4741
4742 ZVAL_STRINGL(return_value, ImageInfo.Thumbnail.data, ImageInfo.Thumbnail.size);
4743 if (arg_c >= 3) {
4744 if (!ImageInfo.Thumbnail.width || !ImageInfo.Thumbnail.height) {
4745 if (!exif_scan_thumbnail(&ImageInfo)) {
4746 ImageInfo.Thumbnail.width = ImageInfo.Thumbnail.height = 0;
4747 }
4748 }
4749 zval_dtor(z_width);
4750 zval_dtor(z_height);
4751 ZVAL_LONG(z_width, ImageInfo.Thumbnail.width);
4752 ZVAL_LONG(z_height, ImageInfo.Thumbnail.height);
4753 }
4754 if (arg_c >= 4) {
4755 zval_dtor(z_imagetype);
4756 ZVAL_LONG(z_imagetype, ImageInfo.Thumbnail.filetype);
4757 }
4758
4759 #ifdef EXIF_DEBUG
4760 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Discarding info");
4761 #endif
4762
4763 exif_discard_imageinfo(&ImageInfo);
4764
4765 #ifdef EXIF_DEBUG
4766 php_error_docref1(NULL, (Z_TYPE_P(stream) == IS_RESOURCE ? "<stream>" : Z_STRVAL_P(stream)), E_NOTICE, "Done");
4767 #endif
4768 }
4769 /* }}} */
4770
4771 /* {{{ proto int exif_imagetype(string imagefile)
4772 Get the type of an image */
PHP_FUNCTION(exif_imagetype)4773 PHP_FUNCTION(exif_imagetype)
4774 {
4775 char *imagefile;
4776 size_t imagefile_len;
4777 php_stream * stream;
4778 int itype = 0;
4779
4780 if (zend_parse_parameters(ZEND_NUM_ARGS(), "p", &imagefile, &imagefile_len) == FAILURE) {
4781 return;
4782 }
4783
4784 stream = php_stream_open_wrapper(imagefile, "rb", IGNORE_PATH|REPORT_ERRORS, NULL);
4785
4786 if (stream == NULL) {
4787 RETURN_FALSE;
4788 }
4789
4790 itype = php_getimagetype(stream, NULL);
4791
4792 php_stream_close(stream);
4793
4794 if (itype == IMAGE_FILETYPE_UNKNOWN) {
4795 RETURN_FALSE;
4796 } else {
4797 ZVAL_LONG(return_value, itype);
4798 }
4799 }
4800 /* }}} */
4801
4802 #endif
4803
4804 /*
4805 * Local variables:
4806 * tab-width: 4
4807 * c-basic-offset: 4
4808 * End:
4809 * vim600: sw=4 ts=4 tw=78 fdm=marker
4810 * vim<600: sw=4 ts=4 tw=78
4811 */
4812
