1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 5 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2016 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: cad29b729548e4206f0697710cc9e177f26fdff3 $ */
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 TSRMLS_DC
54 #define EXIFERR_CC , __FILE__, __LINE__ TSRMLS_CC
55 #else
56 #define EXIFERR_DC TSRMLS_DC
57 #define EXIFERR_CC TSRMLS_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 100
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_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 #define EXIF_VERSION "1.4 $Id: cad29b729548e4206f0697710cc9e177f26fdff3 $"
132
133 /* {{{ PHP_MINFO_FUNCTION
134 */
PHP_MINFO_FUNCTION(exif)135 PHP_MINFO_FUNCTION(exif)
136 {
137 php_info_print_table_start();
138 php_info_print_table_row(2, "EXIF Support", "enabled");
139 php_info_print_table_row(2, "EXIF Version", EXIF_VERSION);
140 php_info_print_table_row(2, "Supported EXIF Version", "0220");
141 php_info_print_table_row(2, "Supported filetypes", "JPEG,TIFF");
142 php_info_print_table_end();
143 DISPLAY_INI_ENTRIES();
144 }
145 /* }}} */
146
147 ZEND_BEGIN_MODULE_GLOBALS(exif)
148 char * encode_unicode;
149 char * decode_unicode_be;
150 char * decode_unicode_le;
151 char * encode_jis;
152 char * decode_jis_be;
153 char * decode_jis_le;
154 ZEND_END_MODULE_GLOBALS(exif)
155
ZEND_DECLARE_MODULE_GLOBALS(exif)156 ZEND_DECLARE_MODULE_GLOBALS(exif)
157
158 #ifdef ZTS
159 #define EXIF_G(v) TSRMG(exif_globals_id, zend_exif_globals *, v)
160 #else
161 #define EXIF_G(v) (exif_globals.v)
162 #endif
163
164 /* {{{ PHP_INI
165 */
166
167 ZEND_INI_MH(OnUpdateEncode)
168 {
169 if (new_value && new_value_length) {
170 const zend_encoding **return_list;
171 size_t return_size;
172 if (FAILURE == zend_multibyte_parse_encoding_list(new_value, new_value_length,
173 &return_list, &return_size, 0 TSRMLS_CC)) {
174 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Illegal encoding ignored: '%s'", new_value);
175 return FAILURE;
176 }
177 efree(return_list);
178 }
179 return OnUpdateString(entry, new_value, new_value_length, mh_arg1, mh_arg2, mh_arg3, stage TSRMLS_CC);
180 }
181
ZEND_INI_MH(OnUpdateDecode)182 ZEND_INI_MH(OnUpdateDecode)
183 {
184 if (new_value) {
185 const zend_encoding **return_list;
186 size_t return_size;
187 if (FAILURE == zend_multibyte_parse_encoding_list(new_value, new_value_length,
188 &return_list, &return_size, 0 TSRMLS_CC)) {
189 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Illegal encoding ignored: '%s'", new_value);
190 return FAILURE;
191 }
192 efree(return_list);
193 }
194 return OnUpdateString(entry, new_value, new_value_length, mh_arg1, mh_arg2, mh_arg3, stage TSRMLS_CC);
195 }
196
197 PHP_INI_BEGIN()
198 STD_PHP_INI_ENTRY("exif.encode_unicode", "ISO-8859-15", PHP_INI_ALL, OnUpdateEncode, encode_unicode, zend_exif_globals, exif_globals)
199 STD_PHP_INI_ENTRY("exif.decode_unicode_motorola", "UCS-2BE", PHP_INI_ALL, OnUpdateDecode, decode_unicode_be, zend_exif_globals, exif_globals)
200 STD_PHP_INI_ENTRY("exif.decode_unicode_intel", "UCS-2LE", PHP_INI_ALL, OnUpdateDecode, decode_unicode_le, zend_exif_globals, exif_globals)
201 STD_PHP_INI_ENTRY("exif.encode_jis", "", PHP_INI_ALL, OnUpdateEncode, encode_jis, zend_exif_globals, exif_globals)
202 STD_PHP_INI_ENTRY("exif.decode_jis_motorola", "JIS", PHP_INI_ALL, OnUpdateDecode, decode_jis_be, zend_exif_globals, exif_globals)
203 STD_PHP_INI_ENTRY("exif.decode_jis_intel", "JIS", PHP_INI_ALL, OnUpdateDecode, decode_jis_le, zend_exif_globals, exif_globals)
PHP_INI_END()204 PHP_INI_END()
205 /* }}} */
206
207 /* {{{ PHP_GINIT_FUNCTION
208 */
209 static PHP_GINIT_FUNCTION(exif)
210 {
211 exif_globals->encode_unicode = NULL;
212 exif_globals->decode_unicode_be = NULL;
213 exif_globals->decode_unicode_le = NULL;
214 exif_globals->encode_jis = NULL;
215 exif_globals->decode_jis_be = NULL;
216 exif_globals->decode_jis_le = NULL;
217 }
218 /* }}} */
219
220 /* {{{ PHP_MINIT_FUNCTION(exif)
221 Get the size of an image as 4-element array */
PHP_MINIT_FUNCTION(exif)222 PHP_MINIT_FUNCTION(exif)
223 {
224 REGISTER_INI_ENTRIES();
225 if (zend_hash_exists(&module_registry, "mbstring", sizeof("mbstring"))) {
226 REGISTER_LONG_CONSTANT("EXIF_USE_MBSTRING", 1, CONST_CS | CONST_PERSISTENT);
227 } else {
228 REGISTER_LONG_CONSTANT("EXIF_USE_MBSTRING", 0, CONST_CS | CONST_PERSISTENT);
229 }
230 return SUCCESS;
231 }
232 /* }}} */
233
234 /* {{{ PHP_MSHUTDOWN_FUNCTION
235 */
PHP_MSHUTDOWN_FUNCTION(exif)236 PHP_MSHUTDOWN_FUNCTION(exif)
237 {
238 UNREGISTER_INI_ENTRIES();
239 return SUCCESS;
240 }
241 /* }}} */
242
243 /* {{{ exif dependencies */
244 static const zend_module_dep exif_module_deps[] = {
245 ZEND_MOD_REQUIRED("standard")
246 ZEND_MOD_OPTIONAL("mbstring")
247 ZEND_MOD_END
248 };
249 /* }}} */
250
251 /* {{{ exif_module_entry
252 */
253 zend_module_entry exif_module_entry = {
254 STANDARD_MODULE_HEADER_EX, NULL,
255 exif_module_deps,
256 "exif",
257 exif_functions,
258 PHP_MINIT(exif),
259 PHP_MSHUTDOWN(exif),
260 NULL, NULL,
261 PHP_MINFO(exif),
262 #if ZEND_MODULE_API_NO >= 20010901
263 EXIF_VERSION,
264 #endif
265 #if ZEND_MODULE_API_NO >= 20060613
266 PHP_MODULE_GLOBALS(exif),
267 PHP_GINIT(exif),
268 NULL,
269 NULL,
270 STANDARD_MODULE_PROPERTIES_EX
271 #else
272 STANDARD_MODULE_PROPERTIES
273 #endif
274 };
275 /* }}} */
276
277 #ifdef COMPILE_DL_EXIF
ZEND_GET_MODULE(exif)278 ZEND_GET_MODULE(exif)
279 #endif
280
281 /* {{{ php_strnlen
282 * get length of string if buffer if less than buffer size or buffer size */
283 static size_t php_strnlen(char* str, size_t maxlen) {
284 size_t len = 0;
285
286 if (str && maxlen && *str) {
287 do {
288 len++;
289 } while (--maxlen && *(++str));
290 }
291 return len;
292 }
293 /* }}} */
294
295 /* {{{ error messages
296 */
297 static const char * EXIF_ERROR_FILEEOF = "Unexpected end of file reached";
298 static const char * EXIF_ERROR_CORRUPT = "File structure corrupted";
299 static const char * EXIF_ERROR_THUMBEOF = "Thumbnail goes IFD boundary or end of file reached";
300 static const char * EXIF_ERROR_FSREALLOC = "Illegal reallocating of undefined file section";
301
302 #define EXIF_ERRLOG_FILEEOF(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_FILEEOF);
303 #define EXIF_ERRLOG_CORRUPT(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_CORRUPT);
304 #define EXIF_ERRLOG_THUMBEOF(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_THUMBEOF);
305 #define EXIF_ERRLOG_FSREALLOC(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_FSREALLOC);
306 /* }}} */
307
308 /* {{{ format description defines
309 Describes format descriptor
310 */
311 static int php_tiff_bytes_per_format[] = {0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8, 1};
312 #define NUM_FORMATS 13
313
314 #define TAG_FMT_BYTE 1
315 #define TAG_FMT_STRING 2
316 #define TAG_FMT_USHORT 3
317 #define TAG_FMT_ULONG 4
318 #define TAG_FMT_URATIONAL 5
319 #define TAG_FMT_SBYTE 6
320 #define TAG_FMT_UNDEFINED 7
321 #define TAG_FMT_SSHORT 8
322 #define TAG_FMT_SLONG 9
323 #define TAG_FMT_SRATIONAL 10
324 #define TAG_FMT_SINGLE 11
325 #define TAG_FMT_DOUBLE 12
326 #define TAG_FMT_IFD 13
327
328 #ifdef EXIF_DEBUG
exif_get_tagformat(int format)329 static char *exif_get_tagformat(int format)
330 {
331 switch(format) {
332 case TAG_FMT_BYTE: return "BYTE";
333 case TAG_FMT_STRING: return "STRING";
334 case TAG_FMT_USHORT: return "USHORT";
335 case TAG_FMT_ULONG: return "ULONG";
336 case TAG_FMT_URATIONAL: return "URATIONAL";
337 case TAG_FMT_SBYTE: return "SBYTE";
338 case TAG_FMT_UNDEFINED: return "UNDEFINED";
339 case TAG_FMT_SSHORT: return "SSHORT";
340 case TAG_FMT_SLONG: return "SLONG";
341 case TAG_FMT_SRATIONAL: return "SRATIONAL";
342 case TAG_FMT_SINGLE: return "SINGLE";
343 case TAG_FMT_DOUBLE: return "DOUBLE";
344 case TAG_FMT_IFD: return "IFD";
345 }
346 return "*Illegal";
347 }
348 #endif
349
350 /* Describes tag values */
351 #define TAG_GPS_VERSION_ID 0x0000
352 #define TAG_GPS_LATITUDE_REF 0x0001
353 #define TAG_GPS_LATITUDE 0x0002
354 #define TAG_GPS_LONGITUDE_REF 0x0003
355 #define TAG_GPS_LONGITUDE 0x0004
356 #define TAG_GPS_ALTITUDE_REF 0x0005
357 #define TAG_GPS_ALTITUDE 0x0006
358 #define TAG_GPS_TIME_STAMP 0x0007
359 #define TAG_GPS_SATELLITES 0x0008
360 #define TAG_GPS_STATUS 0x0009
361 #define TAG_GPS_MEASURE_MODE 0x000A
362 #define TAG_GPS_DOP 0x000B
363 #define TAG_GPS_SPEED_REF 0x000C
364 #define TAG_GPS_SPEED 0x000D
365 #define TAG_GPS_TRACK_REF 0x000E
366 #define TAG_GPS_TRACK 0x000F
367 #define TAG_GPS_IMG_DIRECTION_REF 0x0010
368 #define TAG_GPS_IMG_DIRECTION 0x0011
369 #define TAG_GPS_MAP_DATUM 0x0012
370 #define TAG_GPS_DEST_LATITUDE_REF 0x0013
371 #define TAG_GPS_DEST_LATITUDE 0x0014
372 #define TAG_GPS_DEST_LONGITUDE_REF 0x0015
373 #define TAG_GPS_DEST_LONGITUDE 0x0016
374 #define TAG_GPS_DEST_BEARING_REF 0x0017
375 #define TAG_GPS_DEST_BEARING 0x0018
376 #define TAG_GPS_DEST_DISTANCE_REF 0x0019
377 #define TAG_GPS_DEST_DISTANCE 0x001A
378 #define TAG_GPS_PROCESSING_METHOD 0x001B
379 #define TAG_GPS_AREA_INFORMATION 0x001C
380 #define TAG_GPS_DATE_STAMP 0x001D
381 #define TAG_GPS_DIFFERENTIAL 0x001E
382 #define TAG_TIFF_COMMENT 0x00FE /* SHOUDLNT HAPPEN */
383 #define TAG_NEW_SUBFILE 0x00FE /* New version of subfile tag */
384 #define TAG_SUBFILE_TYPE 0x00FF /* Old version of subfile tag */
385 #define TAG_IMAGEWIDTH 0x0100
386 #define TAG_IMAGEHEIGHT 0x0101
387 #define TAG_BITS_PER_SAMPLE 0x0102
388 #define TAG_COMPRESSION 0x0103
389 #define TAG_PHOTOMETRIC_INTERPRETATION 0x0106
390 #define TAG_TRESHHOLDING 0x0107
391 #define TAG_CELL_WIDTH 0x0108
392 #define TAG_CELL_HEIGHT 0x0109
393 #define TAG_FILL_ORDER 0x010A
394 #define TAG_DOCUMENT_NAME 0x010D
395 #define TAG_IMAGE_DESCRIPTION 0x010E
396 #define TAG_MAKE 0x010F
397 #define TAG_MODEL 0x0110
398 #define TAG_STRIP_OFFSETS 0x0111
399 #define TAG_ORIENTATION 0x0112
400 #define TAG_SAMPLES_PER_PIXEL 0x0115
401 #define TAG_ROWS_PER_STRIP 0x0116
402 #define TAG_STRIP_BYTE_COUNTS 0x0117
403 #define TAG_MIN_SAMPPLE_VALUE 0x0118
404 #define TAG_MAX_SAMPLE_VALUE 0x0119
405 #define TAG_X_RESOLUTION 0x011A
406 #define TAG_Y_RESOLUTION 0x011B
407 #define TAG_PLANAR_CONFIGURATION 0x011C
408 #define TAG_PAGE_NAME 0x011D
409 #define TAG_X_POSITION 0x011E
410 #define TAG_Y_POSITION 0x011F
411 #define TAG_FREE_OFFSETS 0x0120
412 #define TAG_FREE_BYTE_COUNTS 0x0121
413 #define TAG_GRAY_RESPONSE_UNIT 0x0122
414 #define TAG_GRAY_RESPONSE_CURVE 0x0123
415 #define TAG_RESOLUTION_UNIT 0x0128
416 #define TAG_PAGE_NUMBER 0x0129
417 #define TAG_TRANSFER_FUNCTION 0x012D
418 #define TAG_SOFTWARE 0x0131
419 #define TAG_DATETIME 0x0132
420 #define TAG_ARTIST 0x013B
421 #define TAG_HOST_COMPUTER 0x013C
422 #define TAG_PREDICTOR 0x013D
423 #define TAG_WHITE_POINT 0x013E
424 #define TAG_PRIMARY_CHROMATICITIES 0x013F
425 #define TAG_COLOR_MAP 0x0140
426 #define TAG_HALFTONE_HINTS 0x0141
427 #define TAG_TILE_WIDTH 0x0142
428 #define TAG_TILE_LENGTH 0x0143
429 #define TAG_TILE_OFFSETS 0x0144
430 #define TAG_TILE_BYTE_COUNTS 0x0145
431 #define TAG_SUB_IFD 0x014A
432 #define TAG_INK_SETMPUTER 0x014C
433 #define TAG_INK_NAMES 0x014D
434 #define TAG_NUMBER_OF_INKS 0x014E
435 #define TAG_DOT_RANGE 0x0150
436 #define TAG_TARGET_PRINTER 0x0151
437 #define TAG_EXTRA_SAMPLE 0x0152
438 #define TAG_SAMPLE_FORMAT 0x0153
439 #define TAG_S_MIN_SAMPLE_VALUE 0x0154
440 #define TAG_S_MAX_SAMPLE_VALUE 0x0155
441 #define TAG_TRANSFER_RANGE 0x0156
442 #define TAG_JPEG_TABLES 0x015B
443 #define TAG_JPEG_PROC 0x0200
444 #define TAG_JPEG_INTERCHANGE_FORMAT 0x0201
445 #define TAG_JPEG_INTERCHANGE_FORMAT_LEN 0x0202
446 #define TAG_JPEG_RESTART_INTERVAL 0x0203
447 #define TAG_JPEG_LOSSLESS_PREDICTOR 0x0205
448 #define TAG_JPEG_POINT_TRANSFORMS 0x0206
449 #define TAG_JPEG_Q_TABLES 0x0207
450 #define TAG_JPEG_DC_TABLES 0x0208
451 #define TAG_JPEG_AC_TABLES 0x0209
452 #define TAG_YCC_COEFFICIENTS 0x0211
453 #define TAG_YCC_SUB_SAMPLING 0x0212
454 #define TAG_YCC_POSITIONING 0x0213
455 #define TAG_REFERENCE_BLACK_WHITE 0x0214
456 /* 0x0301 - 0x0302 */
457 /* 0x0320 */
458 /* 0x0343 */
459 /* 0x5001 - 0x501B */
460 /* 0x5021 - 0x503B */
461 /* 0x5090 - 0x5091 */
462 /* 0x5100 - 0x5101 */
463 /* 0x5110 - 0x5113 */
464 /* 0x80E3 - 0x80E6 */
465 /* 0x828d - 0x828F */
466 #define TAG_COPYRIGHT 0x8298
467 #define TAG_EXPOSURETIME 0x829A
468 #define TAG_FNUMBER 0x829D
469 #define TAG_EXIF_IFD_POINTER 0x8769
470 #define TAG_ICC_PROFILE 0x8773
471 #define TAG_EXPOSURE_PROGRAM 0x8822
472 #define TAG_SPECTRAL_SENSITY 0x8824
473 #define TAG_GPS_IFD_POINTER 0x8825
474 #define TAG_ISOSPEED 0x8827
475 #define TAG_OPTOELECTRIC_CONVERSION_F 0x8828
476 /* 0x8829 - 0x882b */
477 #define TAG_EXIFVERSION 0x9000
478 #define TAG_DATE_TIME_ORIGINAL 0x9003
479 #define TAG_DATE_TIME_DIGITIZED 0x9004
480 #define TAG_COMPONENT_CONFIG 0x9101
481 #define TAG_COMPRESSED_BITS_PER_PIXEL 0x9102
482 #define TAG_SHUTTERSPEED 0x9201
483 #define TAG_APERTURE 0x9202
484 #define TAG_BRIGHTNESS_VALUE 0x9203
485 #define TAG_EXPOSURE_BIAS_VALUE 0x9204
486 #define TAG_MAX_APERTURE 0x9205
487 #define TAG_SUBJECT_DISTANCE 0x9206
488 #define TAG_METRIC_MODULE 0x9207
489 #define TAG_LIGHT_SOURCE 0x9208
490 #define TAG_FLASH 0x9209
491 #define TAG_FOCAL_LENGTH 0x920A
492 /* 0x920B - 0x920D */
493 /* 0x9211 - 0x9216 */
494 #define TAG_SUBJECT_AREA 0x9214
495 #define TAG_MAKER_NOTE 0x927C
496 #define TAG_USERCOMMENT 0x9286
497 #define TAG_SUB_SEC_TIME 0x9290
498 #define TAG_SUB_SEC_TIME_ORIGINAL 0x9291
499 #define TAG_SUB_SEC_TIME_DIGITIZED 0x9292
500 /* 0x923F */
501 /* 0x935C */
502 #define TAG_XP_TITLE 0x9C9B
503 #define TAG_XP_COMMENTS 0x9C9C
504 #define TAG_XP_AUTHOR 0x9C9D
505 #define TAG_XP_KEYWORDS 0x9C9E
506 #define TAG_XP_SUBJECT 0x9C9F
507 #define TAG_FLASH_PIX_VERSION 0xA000
508 #define TAG_COLOR_SPACE 0xA001
509 #define TAG_COMP_IMAGE_WIDTH 0xA002 /* compressed images only */
510 #define TAG_COMP_IMAGE_HEIGHT 0xA003
511 #define TAG_RELATED_SOUND_FILE 0xA004
512 #define TAG_INTEROP_IFD_POINTER 0xA005 /* IFD pointer */
513 #define TAG_FLASH_ENERGY 0xA20B
514 #define TAG_SPATIAL_FREQUENCY_RESPONSE 0xA20C
515 #define TAG_FOCALPLANE_X_RES 0xA20E
516 #define TAG_FOCALPLANE_Y_RES 0xA20F
517 #define TAG_FOCALPLANE_RESOLUTION_UNIT 0xA210
518 #define TAG_SUBJECT_LOCATION 0xA214
519 #define TAG_EXPOSURE_INDEX 0xA215
520 #define TAG_SENSING_METHOD 0xA217
521 #define TAG_FILE_SOURCE 0xA300
522 #define TAG_SCENE_TYPE 0xA301
523 #define TAG_CFA_PATTERN 0xA302
524 #define TAG_CUSTOM_RENDERED 0xA401
525 #define TAG_EXPOSURE_MODE 0xA402
526 #define TAG_WHITE_BALANCE 0xA403
527 #define TAG_DIGITAL_ZOOM_RATIO 0xA404
528 #define TAG_FOCAL_LENGTH_IN_35_MM_FILM 0xA405
529 #define TAG_SCENE_CAPTURE_TYPE 0xA406
530 #define TAG_GAIN_CONTROL 0xA407
531 #define TAG_CONTRAST 0xA408
532 #define TAG_SATURATION 0xA409
533 #define TAG_SHARPNESS 0xA40A
534 #define TAG_DEVICE_SETTING_DESCRIPTION 0xA40B
535 #define TAG_SUBJECT_DISTANCE_RANGE 0xA40C
536 #define TAG_IMAGE_UNIQUE_ID 0xA420
537
538 /* Olympus specific tags */
539 #define TAG_OLYMPUS_SPECIALMODE 0x0200
540 #define TAG_OLYMPUS_JPEGQUAL 0x0201
541 #define TAG_OLYMPUS_MACRO 0x0202
542 #define TAG_OLYMPUS_DIGIZOOM 0x0204
543 #define TAG_OLYMPUS_SOFTWARERELEASE 0x0207
544 #define TAG_OLYMPUS_PICTINFO 0x0208
545 #define TAG_OLYMPUS_CAMERAID 0x0209
546 /* end Olympus specific tags */
547
548 /* Internal */
549 #define TAG_NONE -1 /* note that -1 <> 0xFFFF */
550 #define TAG_COMPUTED_VALUE -2
551 #define TAG_END_OF_LIST 0xFFFD
552
553 /* Values for TAG_PHOTOMETRIC_INTERPRETATION */
554 #define PMI_BLACK_IS_ZERO 0
555 #define PMI_WHITE_IS_ZERO 1
556 #define PMI_RGB 2
557 #define PMI_PALETTE_COLOR 3
558 #define PMI_TRANSPARENCY_MASK 4
559 #define PMI_SEPARATED 5
560 #define PMI_YCBCR 6
561 #define PMI_CIELAB 8
562
563 /* }}} */
564
565 /* {{{ TabTable[]
566 */
567 typedef const struct {
568 unsigned short Tag;
569 char *Desc;
570 } tag_info_type;
571
572 typedef tag_info_type tag_info_array[];
573 typedef tag_info_type *tag_table_type;
574
575 #define TAG_TABLE_END \
576 {TAG_NONE, "No tag value"},\
577 {TAG_COMPUTED_VALUE, "Computed value"},\
578 {TAG_END_OF_LIST, ""} /* Important for exif_get_tagname() IF value != "" function result is != false */
579
580 static tag_info_array tag_table_IFD = {
581 { 0x000B, "ACDComment"},
582 { 0x00FE, "NewSubFile"}, /* better name it 'ImageType' ? */
583 { 0x00FF, "SubFile"},
584 { 0x0100, "ImageWidth"},
585 { 0x0101, "ImageLength"},
586 { 0x0102, "BitsPerSample"},
587 { 0x0103, "Compression"},
588 { 0x0106, "PhotometricInterpretation"},
589 { 0x010A, "FillOrder"},
590 { 0x010D, "DocumentName"},
591 { 0x010E, "ImageDescription"},
592 { 0x010F, "Make"},
593 { 0x0110, "Model"},
594 { 0x0111, "StripOffsets"},
595 { 0x0112, "Orientation"},
596 { 0x0115, "SamplesPerPixel"},
597 { 0x0116, "RowsPerStrip"},
598 { 0x0117, "StripByteCounts"},
599 { 0x0118, "MinSampleValue"},
600 { 0x0119, "MaxSampleValue"},
601 { 0x011A, "XResolution"},
602 { 0x011B, "YResolution"},
603 { 0x011C, "PlanarConfiguration"},
604 { 0x011D, "PageName"},
605 { 0x011E, "XPosition"},
606 { 0x011F, "YPosition"},
607 { 0x0120, "FreeOffsets"},
608 { 0x0121, "FreeByteCounts"},
609 { 0x0122, "GrayResponseUnit"},
610 { 0x0123, "GrayResponseCurve"},
611 { 0x0124, "T4Options"},
612 { 0x0125, "T6Options"},
613 { 0x0128, "ResolutionUnit"},
614 { 0x0129, "PageNumber"},
615 { 0x012D, "TransferFunction"},
616 { 0x0131, "Software"},
617 { 0x0132, "DateTime"},
618 { 0x013B, "Artist"},
619 { 0x013C, "HostComputer"},
620 { 0x013D, "Predictor"},
621 { 0x013E, "WhitePoint"},
622 { 0x013F, "PrimaryChromaticities"},
623 { 0x0140, "ColorMap"},
624 { 0x0141, "HalfToneHints"},
625 { 0x0142, "TileWidth"},
626 { 0x0143, "TileLength"},
627 { 0x0144, "TileOffsets"},
628 { 0x0145, "TileByteCounts"},
629 { 0x014A, "SubIFD"},
630 { 0x014C, "InkSet"},
631 { 0x014D, "InkNames"},
632 { 0x014E, "NumberOfInks"},
633 { 0x0150, "DotRange"},
634 { 0x0151, "TargetPrinter"},
635 { 0x0152, "ExtraSample"},
636 { 0x0153, "SampleFormat"},
637 { 0x0154, "SMinSampleValue"},
638 { 0x0155, "SMaxSampleValue"},
639 { 0x0156, "TransferRange"},
640 { 0x0157, "ClipPath"},
641 { 0x0158, "XClipPathUnits"},
642 { 0x0159, "YClipPathUnits"},
643 { 0x015A, "Indexed"},
644 { 0x015B, "JPEGTables"},
645 { 0x015F, "OPIProxy"},
646 { 0x0200, "JPEGProc"},
647 { 0x0201, "JPEGInterchangeFormat"},
648 { 0x0202, "JPEGInterchangeFormatLength"},
649 { 0x0203, "JPEGRestartInterval"},
650 { 0x0205, "JPEGLosslessPredictors"},
651 { 0x0206, "JPEGPointTransforms"},
652 { 0x0207, "JPEGQTables"},
653 { 0x0208, "JPEGDCTables"},
654 { 0x0209, "JPEGACTables"},
655 { 0x0211, "YCbCrCoefficients"},
656 { 0x0212, "YCbCrSubSampling"},
657 { 0x0213, "YCbCrPositioning"},
658 { 0x0214, "ReferenceBlackWhite"},
659 { 0x02BC, "ExtensibleMetadataPlatform"}, /* XAP: Extensible Authoring Publishing, obsoleted by XMP: Extensible Metadata Platform */
660 { 0x0301, "Gamma"},
661 { 0x0302, "ICCProfileDescriptor"},
662 { 0x0303, "SRGBRenderingIntent"},
663 { 0x0320, "ImageTitle"},
664 { 0x5001, "ResolutionXUnit"},
665 { 0x5002, "ResolutionYUnit"},
666 { 0x5003, "ResolutionXLengthUnit"},
667 { 0x5004, "ResolutionYLengthUnit"},
668 { 0x5005, "PrintFlags"},
669 { 0x5006, "PrintFlagsVersion"},
670 { 0x5007, "PrintFlagsCrop"},
671 { 0x5008, "PrintFlagsBleedWidth"},
672 { 0x5009, "PrintFlagsBleedWidthScale"},
673 { 0x500A, "HalftoneLPI"},
674 { 0x500B, "HalftoneLPIUnit"},
675 { 0x500C, "HalftoneDegree"},
676 { 0x500D, "HalftoneShape"},
677 { 0x500E, "HalftoneMisc"},
678 { 0x500F, "HalftoneScreen"},
679 { 0x5010, "JPEGQuality"},
680 { 0x5011, "GridSize"},
681 { 0x5012, "ThumbnailFormat"},
682 { 0x5013, "ThumbnailWidth"},
683 { 0x5014, "ThumbnailHeight"},
684 { 0x5015, "ThumbnailColorDepth"},
685 { 0x5016, "ThumbnailPlanes"},
686 { 0x5017, "ThumbnailRawBytes"},
687 { 0x5018, "ThumbnailSize"},
688 { 0x5019, "ThumbnailCompressedSize"},
689 { 0x501A, "ColorTransferFunction"},
690 { 0x501B, "ThumbnailData"},
691 { 0x5020, "ThumbnailImageWidth"},
692 { 0x5021, "ThumbnailImageHeight"},
693 { 0x5022, "ThumbnailBitsPerSample"},
694 { 0x5023, "ThumbnailCompression"},
695 { 0x5024, "ThumbnailPhotometricInterp"},
696 { 0x5025, "ThumbnailImageDescription"},
697 { 0x5026, "ThumbnailEquipMake"},
698 { 0x5027, "ThumbnailEquipModel"},
699 { 0x5028, "ThumbnailStripOffsets"},
700 { 0x5029, "ThumbnailOrientation"},
701 { 0x502A, "ThumbnailSamplesPerPixel"},
702 { 0x502B, "ThumbnailRowsPerStrip"},
703 { 0x502C, "ThumbnailStripBytesCount"},
704 { 0x502D, "ThumbnailResolutionX"},
705 { 0x502E, "ThumbnailResolutionY"},
706 { 0x502F, "ThumbnailPlanarConfig"},
707 { 0x5030, "ThumbnailResolutionUnit"},
708 { 0x5031, "ThumbnailTransferFunction"},
709 { 0x5032, "ThumbnailSoftwareUsed"},
710 { 0x5033, "ThumbnailDateTime"},
711 { 0x5034, "ThumbnailArtist"},
712 { 0x5035, "ThumbnailWhitePoint"},
713 { 0x5036, "ThumbnailPrimaryChromaticities"},
714 { 0x5037, "ThumbnailYCbCrCoefficients"},
715 { 0x5038, "ThumbnailYCbCrSubsampling"},
716 { 0x5039, "ThumbnailYCbCrPositioning"},
717 { 0x503A, "ThumbnailRefBlackWhite"},
718 { 0x503B, "ThumbnailCopyRight"},
719 { 0x5090, "LuminanceTable"},
720 { 0x5091, "ChrominanceTable"},
721 { 0x5100, "FrameDelay"},
722 { 0x5101, "LoopCount"},
723 { 0x5110, "PixelUnit"},
724 { 0x5111, "PixelPerUnitX"},
725 { 0x5112, "PixelPerUnitY"},
726 { 0x5113, "PaletteHistogram"},
727 { 0x1000, "RelatedImageFileFormat"},
728 { 0x800D, "ImageID"},
729 { 0x80E3, "Matteing"}, /* obsoleted by ExtraSamples */
730 { 0x80E4, "DataType"}, /* obsoleted by SampleFormat */
731 { 0x80E5, "ImageDepth"},
732 { 0x80E6, "TileDepth"},
733 { 0x828D, "CFARepeatPatternDim"},
734 { 0x828E, "CFAPattern"},
735 { 0x828F, "BatteryLevel"},
736 { 0x8298, "Copyright"},
737 { 0x829A, "ExposureTime"},
738 { 0x829D, "FNumber"},
739 { 0x83BB, "IPTC/NAA"},
740 { 0x84E3, "IT8RasterPadding"},
741 { 0x84E5, "IT8ColorTable"},
742 { 0x8649, "ImageResourceInformation"}, /* PhotoShop */
743 { 0x8769, "Exif_IFD_Pointer"},
744 { 0x8773, "ICC_Profile"},
745 { 0x8822, "ExposureProgram"},
746 { 0x8824, "SpectralSensity"},
747 { 0x8828, "OECF"},
748 { 0x8825, "GPS_IFD_Pointer"},
749 { 0x8827, "ISOSpeedRatings"},
750 { 0x8828, "OECF"},
751 { 0x9000, "ExifVersion"},
752 { 0x9003, "DateTimeOriginal"},
753 { 0x9004, "DateTimeDigitized"},
754 { 0x9101, "ComponentsConfiguration"},
755 { 0x9102, "CompressedBitsPerPixel"},
756 { 0x9201, "ShutterSpeedValue"},
757 { 0x9202, "ApertureValue"},
758 { 0x9203, "BrightnessValue"},
759 { 0x9204, "ExposureBiasValue"},
760 { 0x9205, "MaxApertureValue"},
761 { 0x9206, "SubjectDistance"},
762 { 0x9207, "MeteringMode"},
763 { 0x9208, "LightSource"},
764 { 0x9209, "Flash"},
765 { 0x920A, "FocalLength"},
766 { 0x920B, "FlashEnergy"}, /* 0xA20B in JPEG */
767 { 0x920C, "SpatialFrequencyResponse"}, /* 0xA20C - - */
768 { 0x920D, "Noise"},
769 { 0x920E, "FocalPlaneXResolution"}, /* 0xA20E - - */
770 { 0x920F, "FocalPlaneYResolution"}, /* 0xA20F - - */
771 { 0x9210, "FocalPlaneResolutionUnit"}, /* 0xA210 - - */
772 { 0x9211, "ImageNumber"},
773 { 0x9212, "SecurityClassification"},
774 { 0x9213, "ImageHistory"},
775 { 0x9214, "SubjectLocation"}, /* 0xA214 - - */
776 { 0x9215, "ExposureIndex"}, /* 0xA215 - - */
777 { 0x9216, "TIFF/EPStandardID"},
778 { 0x9217, "SensingMethod"}, /* 0xA217 - - */
779 { 0x923F, "StoNits"},
780 { 0x927C, "MakerNote"},
781 { 0x9286, "UserComment"},
782 { 0x9290, "SubSecTime"},
783 { 0x9291, "SubSecTimeOriginal"},
784 { 0x9292, "SubSecTimeDigitized"},
785 { 0x935C, "ImageSourceData"}, /* "Adobe Photoshop Document Data Block": 8BIM... */
786 { 0x9c9b, "Title" }, /* Win XP specific, Unicode */
787 { 0x9c9c, "Comments" }, /* Win XP specific, Unicode */
788 { 0x9c9d, "Author" }, /* Win XP specific, Unicode */
789 { 0x9c9e, "Keywords" }, /* Win XP specific, Unicode */
790 { 0x9c9f, "Subject" }, /* Win XP specific, Unicode, not to be confused with SubjectDistance and SubjectLocation */
791 { 0xA000, "FlashPixVersion"},
792 { 0xA001, "ColorSpace"},
793 { 0xA002, "ExifImageWidth"},
794 { 0xA003, "ExifImageLength"},
795 { 0xA004, "RelatedSoundFile"},
796 { 0xA005, "InteroperabilityOffset"},
797 { 0xA20B, "FlashEnergy"}, /* 0x920B in TIFF/EP */
798 { 0xA20C, "SpatialFrequencyResponse"}, /* 0x920C - - */
799 { 0xA20D, "Noise"},
800 { 0xA20E, "FocalPlaneXResolution"}, /* 0x920E - - */
801 { 0xA20F, "FocalPlaneYResolution"}, /* 0x920F - - */
802 { 0xA210, "FocalPlaneResolutionUnit"}, /* 0x9210 - - */
803 { 0xA211, "ImageNumber"},
804 { 0xA212, "SecurityClassification"},
805 { 0xA213, "ImageHistory"},
806 { 0xA214, "SubjectLocation"}, /* 0x9214 - - */
807 { 0xA215, "ExposureIndex"}, /* 0x9215 - - */
808 { 0xA216, "TIFF/EPStandardID"},
809 { 0xA217, "SensingMethod"}, /* 0x9217 - - */
810 { 0xA300, "FileSource"},
811 { 0xA301, "SceneType"},
812 { 0xA302, "CFAPattern"},
813 { 0xA401, "CustomRendered"},
814 { 0xA402, "ExposureMode"},
815 { 0xA403, "WhiteBalance"},
816 { 0xA404, "DigitalZoomRatio"},
817 { 0xA405, "FocalLengthIn35mmFilm"},
818 { 0xA406, "SceneCaptureType"},
819 { 0xA407, "GainControl"},
820 { 0xA408, "Contrast"},
821 { 0xA409, "Saturation"},
822 { 0xA40A, "Sharpness"},
823 { 0xA40B, "DeviceSettingDescription"},
824 { 0xA40C, "SubjectDistanceRange"},
825 { 0xA420, "ImageUniqueID"},
826 TAG_TABLE_END
827 } ;
828
829 static tag_info_array tag_table_GPS = {
830 { 0x0000, "GPSVersion"},
831 { 0x0001, "GPSLatitudeRef"},
832 { 0x0002, "GPSLatitude"},
833 { 0x0003, "GPSLongitudeRef"},
834 { 0x0004, "GPSLongitude"},
835 { 0x0005, "GPSAltitudeRef"},
836 { 0x0006, "GPSAltitude"},
837 { 0x0007, "GPSTimeStamp"},
838 { 0x0008, "GPSSatellites"},
839 { 0x0009, "GPSStatus"},
840 { 0x000A, "GPSMeasureMode"},
841 { 0x000B, "GPSDOP"},
842 { 0x000C, "GPSSpeedRef"},
843 { 0x000D, "GPSSpeed"},
844 { 0x000E, "GPSTrackRef"},
845 { 0x000F, "GPSTrack"},
846 { 0x0010, "GPSImgDirectionRef"},
847 { 0x0011, "GPSImgDirection"},
848 { 0x0012, "GPSMapDatum"},
849 { 0x0013, "GPSDestLatitudeRef"},
850 { 0x0014, "GPSDestLatitude"},
851 { 0x0015, "GPSDestLongitudeRef"},
852 { 0x0016, "GPSDestLongitude"},
853 { 0x0017, "GPSDestBearingRef"},
854 { 0x0018, "GPSDestBearing"},
855 { 0x0019, "GPSDestDistanceRef"},
856 { 0x001A, "GPSDestDistance"},
857 { 0x001B, "GPSProcessingMode"},
858 { 0x001C, "GPSAreaInformation"},
859 { 0x001D, "GPSDateStamp"},
860 { 0x001E, "GPSDifferential"},
861 TAG_TABLE_END
862 };
863
864 static tag_info_array tag_table_IOP = {
865 { 0x0001, "InterOperabilityIndex"}, /* should be 'R98' or 'THM' */
866 { 0x0002, "InterOperabilityVersion"},
867 { 0x1000, "RelatedFileFormat"},
868 { 0x1001, "RelatedImageWidth"},
869 { 0x1002, "RelatedImageHeight"},
870 TAG_TABLE_END
871 };
872
873 static tag_info_array tag_table_VND_CANON = {
874 { 0x0001, "ModeArray"}, /* guess */
875 { 0x0004, "ImageInfo"}, /* guess */
876 { 0x0006, "ImageType"},
877 { 0x0007, "FirmwareVersion"},
878 { 0x0008, "ImageNumber"},
879 { 0x0009, "OwnerName"},
880 { 0x000C, "Camera"},
881 { 0x000F, "CustomFunctions"},
882 TAG_TABLE_END
883 };
884
885 static tag_info_array tag_table_VND_CASIO = {
886 { 0x0001, "RecordingMode"},
887 { 0x0002, "Quality"},
888 { 0x0003, "FocusingMode"},
889 { 0x0004, "FlashMode"},
890 { 0x0005, "FlashIntensity"},
891 { 0x0006, "ObjectDistance"},
892 { 0x0007, "WhiteBalance"},
893 { 0x000A, "DigitalZoom"},
894 { 0x000B, "Sharpness"},
895 { 0x000C, "Contrast"},
896 { 0x000D, "Saturation"},
897 { 0x0014, "CCDSensitivity"},
898 TAG_TABLE_END
899 };
900
901 static tag_info_array tag_table_VND_FUJI = {
902 { 0x0000, "Version"},
903 { 0x1000, "Quality"},
904 { 0x1001, "Sharpness"},
905 { 0x1002, "WhiteBalance"},
906 { 0x1003, "Color"},
907 { 0x1004, "Tone"},
908 { 0x1010, "FlashMode"},
909 { 0x1011, "FlashStrength"},
910 { 0x1020, "Macro"},
911 { 0x1021, "FocusMode"},
912 { 0x1030, "SlowSync"},
913 { 0x1031, "PictureMode"},
914 { 0x1100, "ContTake"},
915 { 0x1300, "BlurWarning"},
916 { 0x1301, "FocusWarning"},
917 { 0x1302, "AEWarning "},
918 TAG_TABLE_END
919 };
920
921 static tag_info_array tag_table_VND_NIKON = {
922 { 0x0003, "Quality"},
923 { 0x0004, "ColorMode"},
924 { 0x0005, "ImageAdjustment"},
925 { 0x0006, "CCDSensitivity"},
926 { 0x0007, "WhiteBalance"},
927 { 0x0008, "Focus"},
928 { 0x000a, "DigitalZoom"},
929 { 0x000b, "Converter"},
930 TAG_TABLE_END
931 };
932
933 static tag_info_array tag_table_VND_NIKON_990 = {
934 { 0x0001, "Version"},
935 { 0x0002, "ISOSetting"},
936 { 0x0003, "ColorMode"},
937 { 0x0004, "Quality"},
938 { 0x0005, "WhiteBalance"},
939 { 0x0006, "ImageSharpening"},
940 { 0x0007, "FocusMode"},
941 { 0x0008, "FlashSetting"},
942 { 0x000F, "ISOSelection"},
943 { 0x0080, "ImageAdjustment"},
944 { 0x0082, "AuxiliaryLens"},
945 { 0x0085, "ManualFocusDistance"},
946 { 0x0086, "DigitalZoom"},
947 { 0x0088, "AFFocusPosition"},
948 { 0x0010, "DataDump"},
949 TAG_TABLE_END
950 };
951
952 static tag_info_array tag_table_VND_OLYMPUS = {
953 { 0x0200, "SpecialMode"},
954 { 0x0201, "JPEGQuality"},
955 { 0x0202, "Macro"},
956 { 0x0204, "DigitalZoom"},
957 { 0x0207, "SoftwareRelease"},
958 { 0x0208, "PictureInfo"},
959 { 0x0209, "CameraId"},
960 { 0x0F00, "DataDump"},
961 TAG_TABLE_END
962 };
963
964 typedef enum mn_byte_order_t {
965 MN_ORDER_INTEL = 0,
966 MN_ORDER_MOTOROLA = 1,
967 MN_ORDER_NORMAL
968 } mn_byte_order_t;
969
970 typedef enum mn_offset_mode_t {
971 MN_OFFSET_NORMAL,
972 MN_OFFSET_MAKER,
973 MN_OFFSET_GUESS
974 } mn_offset_mode_t;
975
976 typedef struct {
977 tag_table_type tag_table;
978 char * make;
979 char * model;
980 char * id_string;
981 int id_string_len;
982 int offset;
983 mn_byte_order_t byte_order;
984 mn_offset_mode_t offset_mode;
985 } maker_note_type;
986
987 static const maker_note_type maker_note_array[] = {
988 { tag_table_VND_CANON, "Canon", NULL, NULL, 0, 0, MN_ORDER_INTEL, MN_OFFSET_GUESS},
989 /* { tag_table_VND_CANON, "Canon", NULL, NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},*/
990 { tag_table_VND_CASIO, "CASIO", NULL, NULL, 0, 0, MN_ORDER_MOTOROLA, MN_OFFSET_NORMAL},
991 { tag_table_VND_FUJI, "FUJIFILM", NULL, "FUJIFILM\x0C\x00\x00\x00", 12, 12, MN_ORDER_INTEL, MN_OFFSET_MAKER},
992 { tag_table_VND_NIKON, "NIKON", NULL, "Nikon\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
993 { tag_table_VND_NIKON_990, "NIKON", NULL, NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
994 { tag_table_VND_OLYMPUS, "OLYMPUS OPTICAL CO.,LTD", NULL, "OLYMP\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
995 };
996 /* }}} */
997
998 /* {{{ exif_get_tagname
999 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 TSRMLS_DC)1000 static char * exif_get_tagname(int tag_num, char *ret, int len, tag_table_type tag_table TSRMLS_DC)
1001 {
1002 int i, t;
1003 char tmp[32];
1004
1005 for (i = 0; (t = tag_table[i].Tag) != TAG_END_OF_LIST; i++) {
1006 if (t == tag_num) {
1007 if (ret && len) {
1008 strlcpy(ret, tag_table[i].Desc, abs(len));
1009 if (len < 0) {
1010 memset(ret + strlen(ret), ' ', -len - strlen(ret) - 1);
1011 ret[-len - 1] = '\0';
1012 }
1013 return ret;
1014 }
1015 return tag_table[i].Desc;
1016 }
1017 }
1018
1019 if (ret && len) {
1020 snprintf(tmp, sizeof(tmp), "UndefinedTag:0x%04X", tag_num);
1021 strlcpy(ret, tmp, abs(len));
1022 if (len < 0) {
1023 memset(ret + strlen(ret), ' ', -len - strlen(ret) - 1);
1024 ret[-len - 1] = '\0';
1025 }
1026 return ret;
1027 }
1028 return "";
1029 }
1030 /* }}} */
1031
1032 /* {{{ exif_char_dump
1033 * Do not use! This is a debug function... */
1034 #ifdef EXIF_DEBUG
exif_char_dump(unsigned char * addr,int len,int offset)1035 static unsigned char* exif_char_dump(unsigned char * addr, int len, int offset)
1036 {
1037 static unsigned char buf[4096+1];
1038 static unsigned char tmp[20];
1039 int c, i, p=0, n = 5+31;
1040
1041 p += slprintf(buf+p, sizeof(buf)-p, "\nDump Len: %08X (%d)", len, len);
1042 if (len) {
1043 for(i=0; i<len+15 && p+n<=sizeof(buf); i++) {
1044 if (i%16==0) {
1045 p += slprintf(buf+p, sizeof(buf)-p, "\n%08X: ", i+offset);
1046 }
1047 if (i<len) {
1048 c = *addr++;
1049 p += slprintf(buf+p, sizeof(buf)-p, "%02X ", c);
1050 tmp[i%16] = c>=32 ? c : '.';
1051 tmp[(i%16)+1] = '\0';
1052 } else {
1053 p += slprintf(buf+p, sizeof(buf)-p, " ");
1054 }
1055 if (i%16==15) {
1056 p += slprintf(buf+p, sizeof(buf)-p, " %s", tmp);
1057 if (i>=len) {
1058 break;
1059 }
1060 }
1061 }
1062 }
1063 buf[sizeof(buf)-1] = '\0';
1064 return buf;
1065 }
1066 #endif
1067 /* }}} */
1068
1069 /* {{{ php_jpg_get16
1070 Get 16 bits motorola order (always) for jpeg header stuff.
1071 */
php_jpg_get16(void * value)1072 static int php_jpg_get16(void *value)
1073 {
1074 return (((uchar *)value)[0] << 8) | ((uchar *)value)[1];
1075 }
1076 /* }}} */
1077
1078 /* {{{ php_ifd_get16u
1079 * Convert a 16 bit unsigned value from file's native byte order */
php_ifd_get16u(void * value,int motorola_intel)1080 static int php_ifd_get16u(void *value, int motorola_intel)
1081 {
1082 if (motorola_intel) {
1083 return (((uchar *)value)[0] << 8) | ((uchar *)value)[1];
1084 } else {
1085 return (((uchar *)value)[1] << 8) | ((uchar *)value)[0];
1086 }
1087 }
1088 /* }}} */
1089
1090 /* {{{ php_ifd_get16s
1091 * Convert a 16 bit signed value from file's native byte order */
php_ifd_get16s(void * value,int motorola_intel)1092 static signed short php_ifd_get16s(void *value, int motorola_intel)
1093 {
1094 return (signed short)php_ifd_get16u(value, motorola_intel);
1095 }
1096 /* }}} */
1097
1098 /* {{{ php_ifd_get32s
1099 * Convert a 32 bit signed value from file's native byte order */
php_ifd_get32s(void * value,int motorola_intel)1100 static int php_ifd_get32s(void *value, int motorola_intel)
1101 {
1102 if (motorola_intel) {
1103 return (((char *)value)[0] << 24)
1104 | (((uchar *)value)[1] << 16)
1105 | (((uchar *)value)[2] << 8 )
1106 | (((uchar *)value)[3] );
1107 } else {
1108 return (((char *)value)[3] << 24)
1109 | (((uchar *)value)[2] << 16)
1110 | (((uchar *)value)[1] << 8 )
1111 | (((uchar *)value)[0] );
1112 }
1113 }
1114 /* }}} */
1115
1116 /* {{{ php_ifd_get32u
1117 * Write 32 bit unsigned value to data */
php_ifd_get32u(void * value,int motorola_intel)1118 static unsigned php_ifd_get32u(void *value, int motorola_intel)
1119 {
1120 return (unsigned)php_ifd_get32s(value, motorola_intel) & 0xffffffff;
1121 }
1122 /* }}} */
1123
1124 /* {{{ php_ifd_set16u
1125 * Write 16 bit unsigned value to data */
php_ifd_set16u(char * data,unsigned int value,int motorola_intel)1126 static void php_ifd_set16u(char *data, unsigned int value, int motorola_intel)
1127 {
1128 if (motorola_intel) {
1129 data[0] = (value & 0xFF00) >> 8;
1130 data[1] = (value & 0x00FF);
1131 } else {
1132 data[1] = (value & 0xFF00) >> 8;
1133 data[0] = (value & 0x00FF);
1134 }
1135 }
1136 /* }}} */
1137
1138 /* {{{ php_ifd_set32u
1139 * Convert a 32 bit unsigned value from file's native byte order */
php_ifd_set32u(char * data,size_t value,int motorola_intel)1140 static void php_ifd_set32u(char *data, size_t value, int motorola_intel)
1141 {
1142 if (motorola_intel) {
1143 data[0] = (value & 0xFF000000) >> 24;
1144 data[1] = (value & 0x00FF0000) >> 16;
1145 data[2] = (value & 0x0000FF00) >> 8;
1146 data[3] = (value & 0x000000FF);
1147 } else {
1148 data[3] = (value & 0xFF000000) >> 24;
1149 data[2] = (value & 0x00FF0000) >> 16;
1150 data[1] = (value & 0x0000FF00) >> 8;
1151 data[0] = (value & 0x000000FF);
1152 }
1153 }
1154 /* }}} */
1155
1156 #ifdef EXIF_DEBUG
exif_dump_data(int * dump_free,int format,int components,int length,int motorola_intel,char * value_ptr TSRMLS_DC)1157 char * exif_dump_data(int *dump_free, int format, int components, int length, int motorola_intel, char *value_ptr TSRMLS_DC) /* {{{ */
1158 {
1159 char *dump;
1160 int len;
1161
1162 *dump_free = 0;
1163 if (format == TAG_FMT_STRING) {
1164 return value_ptr ? value_ptr : "<no data>";
1165 }
1166 if (format == TAG_FMT_UNDEFINED) {
1167 return "<undefined>\n";
1168 }
1169 if (format == TAG_FMT_IFD) {
1170 return "";
1171 }
1172 if (format == TAG_FMT_SINGLE || format == TAG_FMT_DOUBLE) {
1173 return "<not implemented>";
1174 }
1175 *dump_free = 1;
1176 if (components > 1) {
1177 len = spprintf(&dump, 0, "(%d,%d) {", components, length);
1178 } else {
1179 len = spprintf(&dump, 0, "{");
1180 }
1181 while(components > 0) {
1182 switch(format) {
1183 case TAG_FMT_BYTE:
1184 case TAG_FMT_UNDEFINED:
1185 case TAG_FMT_STRING:
1186 case TAG_FMT_SBYTE:
1187 dump = erealloc(dump, len + 4 + 1);
1188 snprintf(dump + len, 4 + 1, "0x%02X", *value_ptr);
1189 len += 4;
1190 value_ptr++;
1191 break;
1192 case TAG_FMT_USHORT:
1193 case TAG_FMT_SSHORT:
1194 dump = erealloc(dump, len + 6 + 1);
1195 snprintf(dump + len, 6 + 1, "0x%04X", php_ifd_get16s(value_ptr, motorola_intel));
1196 len += 6;
1197 value_ptr += 2;
1198 break;
1199 case TAG_FMT_ULONG:
1200 case TAG_FMT_SLONG:
1201 dump = erealloc(dump, len + 6 + 1);
1202 snprintf(dump + len, 6 + 1, "0x%04X", php_ifd_get32s(value_ptr, motorola_intel));
1203 len += 6;
1204 value_ptr += 4;
1205 break;
1206 case TAG_FMT_URATIONAL:
1207 case TAG_FMT_SRATIONAL:
1208 dump = erealloc(dump, len + 13 + 1);
1209 snprintf(dump + len, 13 + 1, "0x%04X/0x%04X", php_ifd_get32s(value_ptr, motorola_intel), php_ifd_get32s(value_ptr+4, motorola_intel));
1210 len += 13;
1211 value_ptr += 8;
1212 break;
1213 }
1214 if (components > 0) {
1215 dump = erealloc(dump, len + 2 + 1);
1216 snprintf(dump + len, 2 + 1, ", ");
1217 len += 2;
1218 components--;
1219 } else{
1220 break;
1221 }
1222 }
1223 dump = erealloc(dump, len + 1 + 1);
1224 snprintf(dump + len, 1 + 1, "}");
1225 return dump;
1226 }
1227 /* }}} */
1228 #endif
1229
1230 /* {{{ exif_convert_any_format
1231 * Evaluate number, be it int, rational, or float from directory. */
exif_convert_any_format(void * value,int format,int motorola_intel TSRMLS_DC)1232 static double exif_convert_any_format(void *value, int format, int motorola_intel TSRMLS_DC)
1233 {
1234 int s_den;
1235 unsigned u_den;
1236
1237 switch(format) {
1238 case TAG_FMT_SBYTE: return *(signed char *)value;
1239 case TAG_FMT_BYTE: return *(uchar *)value;
1240
1241 case TAG_FMT_USHORT: return php_ifd_get16u(value, motorola_intel);
1242 case TAG_FMT_ULONG: return php_ifd_get32u(value, motorola_intel);
1243
1244 case TAG_FMT_URATIONAL:
1245 u_den = php_ifd_get32u(4+(char *)value, motorola_intel);
1246 if (u_den == 0) {
1247 return 0;
1248 } else {
1249 return (double)php_ifd_get32u(value, motorola_intel) / u_den;
1250 }
1251
1252 case TAG_FMT_SRATIONAL:
1253 s_den = php_ifd_get32s(4+(char *)value, motorola_intel);
1254 if (s_den == 0) {
1255 return 0;
1256 } else {
1257 return (double)php_ifd_get32s(value, motorola_intel) / s_den;
1258 }
1259
1260 case TAG_FMT_SSHORT: return (signed short)php_ifd_get16u(value, motorola_intel);
1261 case TAG_FMT_SLONG: return php_ifd_get32s(value, motorola_intel);
1262
1263 /* Not sure if this is correct (never seen float used in Exif format) */
1264 case TAG_FMT_SINGLE:
1265 #ifdef EXIF_DEBUG
1266 php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Found value of type single");
1267 #endif
1268 return (double)*(float *)value;
1269 case TAG_FMT_DOUBLE:
1270 #ifdef EXIF_DEBUG
1271 php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Found value of type double");
1272 #endif
1273 return *(double *)value;
1274 }
1275 return 0;
1276 }
1277 /* }}} */
1278
1279 /* {{{ exif_convert_any_to_int
1280 * Evaluate number, be it int, rational, or float from directory. */
exif_convert_any_to_int(void * value,int format,int motorola_intel TSRMLS_DC)1281 static size_t exif_convert_any_to_int(void *value, int format, int motorola_intel TSRMLS_DC)
1282 {
1283 int s_den;
1284 unsigned u_den;
1285
1286 switch(format) {
1287 case TAG_FMT_SBYTE: return *(signed char *)value;
1288 case TAG_FMT_BYTE: return *(uchar *)value;
1289
1290 case TAG_FMT_USHORT: return php_ifd_get16u(value, motorola_intel);
1291 case TAG_FMT_ULONG: return php_ifd_get32u(value, motorola_intel);
1292
1293 case TAG_FMT_URATIONAL:
1294 u_den = php_ifd_get32u(4+(char *)value, motorola_intel);
1295 if (u_den == 0) {
1296 return 0;
1297 } else {
1298 return php_ifd_get32u(value, motorola_intel) / u_den;
1299 }
1300
1301 case TAG_FMT_SRATIONAL:
1302 s_den = php_ifd_get32s(4+(char *)value, motorola_intel);
1303 if (s_den == 0) {
1304 return 0;
1305 } else {
1306 return (size_t)((double)php_ifd_get32s(value, motorola_intel) / s_den);
1307 }
1308
1309 case TAG_FMT_SSHORT: return php_ifd_get16u(value, motorola_intel);
1310 case TAG_FMT_SLONG: return php_ifd_get32s(value, motorola_intel);
1311
1312 /* Not sure if this is correct (never seen float used in Exif format) */
1313 case TAG_FMT_SINGLE:
1314 #ifdef EXIF_DEBUG
1315 php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Found value of type single");
1316 #endif
1317 return (size_t)*(float *)value;
1318 case TAG_FMT_DOUBLE:
1319 #ifdef EXIF_DEBUG
1320 php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Found value of type double");
1321 #endif
1322 return (size_t)*(double *)value;
1323 }
1324 return 0;
1325 }
1326 /* }}} */
1327
1328 /* {{{ struct image_info_value, image_info_list
1329 */
1330 #ifndef WORD
1331 #define WORD unsigned short
1332 #endif
1333 #ifndef DWORD
1334 #define DWORD unsigned int
1335 #endif
1336
1337 typedef struct {
1338 int num;
1339 int den;
1340 } signed_rational;
1341
1342 typedef struct {
1343 unsigned int num;
1344 unsigned int den;
1345 } unsigned_rational;
1346
1347 typedef union _image_info_value {
1348 char *s;
1349 unsigned u;
1350 int i;
1351 float f;
1352 double d;
1353 signed_rational sr;
1354 unsigned_rational ur;
1355 union _image_info_value *list;
1356 } image_info_value;
1357
1358 typedef struct {
1359 WORD tag;
1360 WORD format;
1361 DWORD length;
1362 DWORD dummy; /* value ptr of tiff directory entry */
1363 char *name;
1364 image_info_value value;
1365 } image_info_data;
1366
1367 typedef struct {
1368 int count;
1369 image_info_data *list;
1370 } image_info_list;
1371 /* }}} */
1372
1373 /* {{{ exif_get_sectionname
1374 Returns the name of a section
1375 */
1376 #define SECTION_FILE 0
1377 #define SECTION_COMPUTED 1
1378 #define SECTION_ANY_TAG 2
1379 #define SECTION_IFD0 3
1380 #define SECTION_THUMBNAIL 4
1381 #define SECTION_COMMENT 5
1382 #define SECTION_APP0 6
1383 #define SECTION_EXIF 7
1384 #define SECTION_FPIX 8
1385 #define SECTION_GPS 9
1386 #define SECTION_INTEROP 10
1387 #define SECTION_APP12 11
1388 #define SECTION_WINXP 12
1389 #define SECTION_MAKERNOTE 13
1390 #define SECTION_COUNT 14
1391
1392 #define FOUND_FILE (1<<SECTION_FILE)
1393 #define FOUND_COMPUTED (1<<SECTION_COMPUTED)
1394 #define FOUND_ANY_TAG (1<<SECTION_ANY_TAG)
1395 #define FOUND_IFD0 (1<<SECTION_IFD0)
1396 #define FOUND_THUMBNAIL (1<<SECTION_THUMBNAIL)
1397 #define FOUND_COMMENT (1<<SECTION_COMMENT)
1398 #define FOUND_APP0 (1<<SECTION_APP0)
1399 #define FOUND_EXIF (1<<SECTION_EXIF)
1400 #define FOUND_FPIX (1<<SECTION_FPIX)
1401 #define FOUND_GPS (1<<SECTION_GPS)
1402 #define FOUND_INTEROP (1<<SECTION_INTEROP)
1403 #define FOUND_APP12 (1<<SECTION_APP12)
1404 #define FOUND_WINXP (1<<SECTION_WINXP)
1405 #define FOUND_MAKERNOTE (1<<SECTION_MAKERNOTE)
1406
exif_get_sectionname(int section)1407 static char *exif_get_sectionname(int section)
1408 {
1409 switch(section) {
1410 case SECTION_FILE: return "FILE";
1411 case SECTION_COMPUTED: return "COMPUTED";
1412 case SECTION_ANY_TAG: return "ANY_TAG";
1413 case SECTION_IFD0: return "IFD0";
1414 case SECTION_THUMBNAIL: return "THUMBNAIL";
1415 case SECTION_COMMENT: return "COMMENT";
1416 case SECTION_APP0: return "APP0";
1417 case SECTION_EXIF: return "EXIF";
1418 case SECTION_FPIX: return "FPIX";
1419 case SECTION_GPS: return "GPS";
1420 case SECTION_INTEROP: return "INTEROP";
1421 case SECTION_APP12: return "APP12";
1422 case SECTION_WINXP: return "WINXP";
1423 case SECTION_MAKERNOTE: return "MAKERNOTE";
1424 }
1425 return "";
1426 }
1427
exif_get_tag_table(int section)1428 static tag_table_type exif_get_tag_table(int section)
1429 {
1430 switch(section) {
1431 case SECTION_FILE: return &tag_table_IFD[0];
1432 case SECTION_COMPUTED: return &tag_table_IFD[0];
1433 case SECTION_ANY_TAG: return &tag_table_IFD[0];
1434 case SECTION_IFD0: return &tag_table_IFD[0];
1435 case SECTION_THUMBNAIL: return &tag_table_IFD[0];
1436 case SECTION_COMMENT: return &tag_table_IFD[0];
1437 case SECTION_APP0: return &tag_table_IFD[0];
1438 case SECTION_EXIF: return &tag_table_IFD[0];
1439 case SECTION_FPIX: return &tag_table_IFD[0];
1440 case SECTION_GPS: return &tag_table_GPS[0];
1441 case SECTION_INTEROP: return &tag_table_IOP[0];
1442 case SECTION_APP12: return &tag_table_IFD[0];
1443 case SECTION_WINXP: return &tag_table_IFD[0];
1444 }
1445 return &tag_table_IFD[0];
1446 }
1447 /* }}} */
1448
1449 /* {{{ exif_get_sectionlist
1450 Return list of sectionnames specified by sectionlist. Return value must be freed
1451 */
exif_get_sectionlist(int sectionlist TSRMLS_DC)1452 static char *exif_get_sectionlist(int sectionlist TSRMLS_DC)
1453 {
1454 int i, len, ml = 0;
1455 char *sections;
1456
1457 for(i=0; i<SECTION_COUNT; i++) {
1458 ml += strlen(exif_get_sectionname(i))+2;
1459 }
1460 sections = safe_emalloc(ml, 1, 1);
1461 sections[0] = '\0';
1462 len = 0;
1463 for(i=0; i<SECTION_COUNT; i++) {
1464 if (sectionlist&(1<<i)) {
1465 snprintf(sections+len, ml-len, "%s, ", exif_get_sectionname(i));
1466 len = strlen(sections);
1467 }
1468 }
1469 if (len>2)
1470 sections[len-2] = '\0';
1471 return sections;
1472 }
1473 /* }}} */
1474
1475 /* {{{ struct image_info_type
1476 This structure stores Exif header image elements in a simple manner
1477 Used to store camera data as extracted from the various ways that it can be
1478 stored in a nexif header
1479 */
1480
1481 typedef struct {
1482 int type;
1483 size_t size;
1484 uchar *data;
1485 } file_section;
1486
1487 typedef struct {
1488 int count;
1489 file_section *list;
1490 } file_section_list;
1491
1492 typedef struct {
1493 image_filetype filetype;
1494 size_t width, height;
1495 size_t size;
1496 size_t offset;
1497 char *data;
1498 } thumbnail_data;
1499
1500 typedef struct {
1501 char *value;
1502 size_t size;
1503 int tag;
1504 } xp_field_type;
1505
1506 typedef struct {
1507 int count;
1508 xp_field_type *list;
1509 } xp_field_list;
1510
1511 /* This structure is used to store a section of a Jpeg file. */
1512 typedef struct {
1513 php_stream *infile;
1514 char *FileName;
1515 time_t FileDateTime;
1516 size_t FileSize;
1517 image_filetype FileType;
1518 int Height, Width;
1519 int IsColor;
1520
1521 char *make;
1522 char *model;
1523
1524 float ApertureFNumber;
1525 float ExposureTime;
1526 double FocalplaneUnits;
1527 float CCDWidth;
1528 double FocalplaneXRes;
1529 size_t ExifImageWidth;
1530 float FocalLength;
1531 float Distance;
1532
1533 int motorola_intel; /* 1 Motorola; 0 Intel */
1534
1535 char *UserComment;
1536 int UserCommentLength;
1537 char *UserCommentEncoding;
1538 char *encode_unicode;
1539 char *decode_unicode_be;
1540 char *decode_unicode_le;
1541 char *encode_jis;
1542 char *decode_jis_be;
1543 char *decode_jis_le;
1544 char *Copyright;/* EXIF standard defines Copyright as "<Photographer> [ '\0' <Editor> ] ['\0']" */
1545 char *CopyrightPhotographer;
1546 char *CopyrightEditor;
1547
1548 xp_field_list xp_fields;
1549
1550 thumbnail_data Thumbnail;
1551 /* other */
1552 int sections_found; /* FOUND_<marker> */
1553 image_info_list info_list[SECTION_COUNT];
1554 /* for parsing */
1555 int read_thumbnail;
1556 int read_all;
1557 int ifd_nesting_level;
1558 /* internal */
1559 file_section_list file;
1560 } image_info_type;
1561 /* }}} */
1562
1563 /* {{{ exif_error_docref */
exif_error_docref(const char * docref EXIFERR_DC,const image_info_type * ImageInfo,int type,const char * format,...)1564 static void exif_error_docref(const char *docref EXIFERR_DC, const image_info_type *ImageInfo, int type, const char *format, ...)
1565 {
1566 va_list args;
1567
1568 va_start(args, format);
1569 #ifdef EXIF_DEBUG
1570 {
1571 char *buf;
1572
1573 spprintf(&buf, 0, "%s(%d): %s", _file, _line, format);
1574 php_verror(docref, ImageInfo->FileName?ImageInfo->FileName:"", type, buf, args TSRMLS_CC);
1575 efree(buf);
1576 }
1577 #else
1578 php_verror(docref, ImageInfo->FileName?ImageInfo->FileName:"", type, format, args TSRMLS_CC);
1579 #endif
1580 va_end(args);
1581 }
1582 /* }}} */
1583
1584 /* {{{ jpeg_sof_info
1585 */
1586 typedef struct {
1587 int bits_per_sample;
1588 size_t width;
1589 size_t height;
1590 int num_components;
1591 } jpeg_sof_info;
1592 /* }}} */
1593
1594 /* {{{ exif_file_sections_add
1595 Add a file_section to image_info
1596 returns the used block or -1. if size>0 and data == NULL buffer of size is allocated
1597 */
exif_file_sections_add(image_info_type * ImageInfo,int type,size_t size,uchar * data)1598 static int exif_file_sections_add(image_info_type *ImageInfo, int type, size_t size, uchar *data)
1599 {
1600 file_section *tmp;
1601 int count = ImageInfo->file.count;
1602
1603 tmp = safe_erealloc(ImageInfo->file.list, (count+1), sizeof(file_section), 0);
1604 ImageInfo->file.list = tmp;
1605 ImageInfo->file.list[count].type = 0xFFFF;
1606 ImageInfo->file.list[count].data = NULL;
1607 ImageInfo->file.list[count].size = 0;
1608 ImageInfo->file.count = count+1;
1609 if (!size) {
1610 data = NULL;
1611 } else if (data == NULL) {
1612 data = safe_emalloc(size, 1, 0);
1613 }
1614 ImageInfo->file.list[count].type = type;
1615 ImageInfo->file.list[count].data = data;
1616 ImageInfo->file.list[count].size = size;
1617 return count;
1618 }
1619 /* }}} */
1620
1621 /* {{{ exif_file_sections_realloc
1622 Reallocate a file section returns 0 on success and -1 on failure
1623 */
exif_file_sections_realloc(image_info_type * ImageInfo,int section_index,size_t size TSRMLS_DC)1624 static int exif_file_sections_realloc(image_info_type *ImageInfo, int section_index, size_t size TSRMLS_DC)
1625 {
1626 void *tmp;
1627
1628 /* This is not a malloc/realloc check. It is a plausibility check for the
1629 * function parameters (requirements engineering).
1630 */
1631 if (section_index >= ImageInfo->file.count) {
1632 EXIF_ERRLOG_FSREALLOC(ImageInfo)
1633 return -1;
1634 }
1635 tmp = safe_erealloc(ImageInfo->file.list[section_index].data, 1, size, 0);
1636 ImageInfo->file.list[section_index].data = tmp;
1637 ImageInfo->file.list[section_index].size = size;
1638 return 0;
1639 }
1640 /* }}} */
1641
1642 /* {{{ exif_file_section_free
1643 Discard all file_sections in ImageInfo
1644 */
exif_file_sections_free(image_info_type * ImageInfo)1645 static int exif_file_sections_free(image_info_type *ImageInfo)
1646 {
1647 int i;
1648
1649 if (ImageInfo->file.count) {
1650 for (i=0; i<ImageInfo->file.count; i++) {
1651 EFREE_IF(ImageInfo->file.list[i].data);
1652 }
1653 }
1654 EFREE_IF(ImageInfo->file.list);
1655 ImageInfo->file.count = 0;
1656 return TRUE;
1657 }
1658 /* }}} */
1659
1660 /* {{{ exif_iif_add_value
1661 Add a value to image_info
1662 */
exif_iif_add_value(image_info_type * image_info,int section_index,char * name,int tag,int format,int length,void * value,int motorola_intel TSRMLS_DC)1663 static void exif_iif_add_value(image_info_type *image_info, int section_index, char *name, int tag, int format, int length, void* value, int motorola_intel TSRMLS_DC)
1664 {
1665 size_t idex;
1666 void *vptr;
1667 image_info_value *info_value;
1668 image_info_data *info_data;
1669 image_info_data *list;
1670
1671 if (length < 0) {
1672 return;
1673 }
1674
1675 list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
1676 image_info->info_list[section_index].list = list;
1677
1678 info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
1679 memset(info_data, 0, sizeof(image_info_data));
1680 info_data->tag = tag;
1681 info_data->format = format;
1682 info_data->length = length;
1683 info_data->name = estrdup(name);
1684 info_value = &info_data->value;
1685
1686 switch (format) {
1687 case TAG_FMT_STRING:
1688 if (value) {
1689 length = php_strnlen(value, length);
1690 info_value->s = estrndup(value, length);
1691 info_data->length = length;
1692 } else {
1693 info_data->length = 0;
1694 info_value->s = estrdup("");
1695 }
1696 break;
1697
1698 default:
1699 /* Standard says more types possible but skip them...
1700 * but allow users to handle data if they know how to
1701 * So not return but use type UNDEFINED
1702 * return;
1703 */
1704 info_data->tag = TAG_FMT_UNDEFINED;/* otherwise not freed from memory */
1705 case TAG_FMT_SBYTE:
1706 case TAG_FMT_BYTE:
1707 /* in contrast to strings bytes do not need to allocate buffer for NULL if length==0 */
1708 if (!length)
1709 break;
1710 case TAG_FMT_UNDEFINED:
1711 if (value) {
1712 if (tag == TAG_MAKER_NOTE) {
1713 length = (int) php_strnlen(value, length);
1714 }
1715
1716 /* do not recompute length here */
1717 info_value->s = estrndup(value, length);
1718 info_data->length = length;
1719 } else {
1720 info_data->length = 0;
1721 info_value->s = estrdup("");
1722 }
1723 break;
1724
1725 case TAG_FMT_USHORT:
1726 case TAG_FMT_ULONG:
1727 case TAG_FMT_URATIONAL:
1728 case TAG_FMT_SSHORT:
1729 case TAG_FMT_SLONG:
1730 case TAG_FMT_SRATIONAL:
1731 case TAG_FMT_SINGLE:
1732 case TAG_FMT_DOUBLE:
1733 if (length==0) {
1734 break;
1735 } else
1736 if (length>1) {
1737 info_value->list = safe_emalloc(length, sizeof(image_info_value), 0);
1738 } else {
1739 info_value = &info_data->value;
1740 }
1741 for (idex=0,vptr=value; idex<(size_t)length; idex++,vptr=(char *) vptr + php_tiff_bytes_per_format[format]) {
1742 if (length>1) {
1743 info_value = &info_data->value.list[idex];
1744 }
1745 switch (format) {
1746 case TAG_FMT_USHORT:
1747 info_value->u = php_ifd_get16u(vptr, motorola_intel);
1748 break;
1749
1750 case TAG_FMT_ULONG:
1751 info_value->u = php_ifd_get32u(vptr, motorola_intel);
1752 break;
1753
1754 case TAG_FMT_URATIONAL:
1755 info_value->ur.num = php_ifd_get32u(vptr, motorola_intel);
1756 info_value->ur.den = php_ifd_get32u(4+(char *)vptr, motorola_intel);
1757 break;
1758
1759 case TAG_FMT_SSHORT:
1760 info_value->i = php_ifd_get16s(vptr, motorola_intel);
1761 break;
1762
1763 case TAG_FMT_SLONG:
1764 info_value->i = php_ifd_get32s(vptr, motorola_intel);
1765 break;
1766
1767 case TAG_FMT_SRATIONAL:
1768 info_value->sr.num = php_ifd_get32u(vptr, motorola_intel);
1769 info_value->sr.den = php_ifd_get32u(4+(char *)vptr, motorola_intel);
1770 break;
1771
1772 case TAG_FMT_SINGLE:
1773 #ifdef EXIF_DEBUG
1774 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Found value of type single");
1775 #endif
1776 info_value->f = *(float *)value;
1777
1778 case TAG_FMT_DOUBLE:
1779 #ifdef EXIF_DEBUG
1780 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Found value of type double");
1781 #endif
1782 info_value->d = *(double *)value;
1783 break;
1784 }
1785 }
1786 }
1787 image_info->sections_found |= 1<<section_index;
1788 image_info->info_list[section_index].count++;
1789 }
1790 /* }}} */
1791
1792 /* {{{ exif_iif_add_tag
1793 Add a tag from IFD to image_info
1794 */
exif_iif_add_tag(image_info_type * image_info,int section_index,char * name,int tag,int format,size_t length,void * value TSRMLS_DC)1795 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 TSRMLS_DC)
1796 {
1797 exif_iif_add_value(image_info, section_index, name, tag, format, (int)length, value, image_info->motorola_intel TSRMLS_CC);
1798 }
1799 /* }}} */
1800
1801 /* {{{ exif_iif_add_int
1802 Add an int value to image_info
1803 */
exif_iif_add_int(image_info_type * image_info,int section_index,char * name,int value TSRMLS_DC)1804 static void exif_iif_add_int(image_info_type *image_info, int section_index, char *name, int value TSRMLS_DC)
1805 {
1806 image_info_data *info_data;
1807 image_info_data *list;
1808
1809 list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
1810 image_info->info_list[section_index].list = list;
1811
1812 info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
1813 info_data->tag = TAG_NONE;
1814 info_data->format = TAG_FMT_SLONG;
1815 info_data->length = 1;
1816 info_data->name = estrdup(name);
1817 info_data->value.i = value;
1818 image_info->sections_found |= 1<<section_index;
1819 image_info->info_list[section_index].count++;
1820 }
1821 /* }}} */
1822
1823 /* {{{ exif_iif_add_str
1824 Add a string value to image_info MUST BE NUL TERMINATED
1825 */
exif_iif_add_str(image_info_type * image_info,int section_index,char * name,char * value TSRMLS_DC)1826 static void exif_iif_add_str(image_info_type *image_info, int section_index, char *name, char *value TSRMLS_DC)
1827 {
1828 image_info_data *info_data;
1829 image_info_data *list;
1830
1831 if (value) {
1832 list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
1833 image_info->info_list[section_index].list = list;
1834 info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
1835 info_data->tag = TAG_NONE;
1836 info_data->format = TAG_FMT_STRING;
1837 info_data->length = 1;
1838 info_data->name = estrdup(name);
1839 info_data->value.s = estrdup(value);
1840 image_info->sections_found |= 1<<section_index;
1841 image_info->info_list[section_index].count++;
1842 }
1843 }
1844 /* }}} */
1845
1846 /* {{{ exif_iif_add_fmt
1847 Add a format string value to image_info MUST BE NUL TERMINATED
1848 */
exif_iif_add_fmt(image_info_type * image_info,int section_index,char * name TSRMLS_DC,char * value,...)1849 static void exif_iif_add_fmt(image_info_type *image_info, int section_index, char *name TSRMLS_DC, char *value, ...)
1850 {
1851 char *tmp;
1852 va_list arglist;
1853
1854 va_start(arglist, value);
1855 if (value) {
1856 vspprintf(&tmp, 0, value, arglist);
1857 exif_iif_add_str(image_info, section_index, name, tmp TSRMLS_CC);
1858 efree(tmp);
1859 }
1860 va_end(arglist);
1861 }
1862 /* }}} */
1863
1864 /* {{{ exif_iif_add_str
1865 Add a string value to image_info MUST BE NUL TERMINATED
1866 */
exif_iif_add_buffer(image_info_type * image_info,int section_index,char * name,int length,char * value TSRMLS_DC)1867 static void exif_iif_add_buffer(image_info_type *image_info, int section_index, char *name, int length, char *value TSRMLS_DC)
1868 {
1869 image_info_data *info_data;
1870 image_info_data *list;
1871
1872 if (value) {
1873 list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
1874 image_info->info_list[section_index].list = list;
1875 info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
1876 info_data->tag = TAG_NONE;
1877 info_data->format = TAG_FMT_UNDEFINED;
1878 info_data->length = length;
1879 info_data->name = estrdup(name);
1880 info_data->value.s = safe_emalloc(length, 1, 1);
1881 memcpy(info_data->value.s, value, length);
1882 info_data->value.s[length] = 0;
1883 image_info->sections_found |= 1<<section_index;
1884 image_info->info_list[section_index].count++;
1885 }
1886 }
1887 /* }}} */
1888
1889 /* {{{ exif_iif_free
1890 Free memory allocated for image_info
1891 */
exif_iif_free(image_info_type * image_info,int section_index)1892 static void exif_iif_free(image_info_type *image_info, int section_index) {
1893 int i;
1894 void *f; /* faster */
1895
1896 if (image_info->info_list[section_index].count) {
1897 for (i=0; i < image_info->info_list[section_index].count; i++) {
1898 if ((f=image_info->info_list[section_index].list[i].name) != NULL) {
1899 efree(f);
1900 }
1901 switch(image_info->info_list[section_index].list[i].format) {
1902 case TAG_FMT_SBYTE:
1903 case TAG_FMT_BYTE:
1904 /* in contrast to strings bytes do not need to allocate buffer for NULL if length==0 */
1905 if (image_info->info_list[section_index].list[i].length<1)
1906 break;
1907 default:
1908 case TAG_FMT_UNDEFINED:
1909 case TAG_FMT_STRING:
1910 if ((f=image_info->info_list[section_index].list[i].value.s) != NULL) {
1911 efree(f);
1912 }
1913 break;
1914
1915 case TAG_FMT_USHORT:
1916 case TAG_FMT_ULONG:
1917 case TAG_FMT_URATIONAL:
1918 case TAG_FMT_SSHORT:
1919 case TAG_FMT_SLONG:
1920 case TAG_FMT_SRATIONAL:
1921 case TAG_FMT_SINGLE:
1922 case TAG_FMT_DOUBLE:
1923 /* nothing to do here */
1924 if (image_info->info_list[section_index].list[i].length > 1) {
1925 if ((f=image_info->info_list[section_index].list[i].value.list) != NULL) {
1926 efree(f);
1927 }
1928 }
1929 break;
1930 }
1931 }
1932 }
1933 EFREE_IF(image_info->info_list[section_index].list);
1934 }
1935 /* }}} */
1936
1937 /* {{{ add_assoc_image_info
1938 * Add image_info to associative array value. */
add_assoc_image_info(zval * value,int sub_array,image_info_type * image_info,int section_index TSRMLS_DC)1939 static void add_assoc_image_info(zval *value, int sub_array, image_info_type *image_info, int section_index TSRMLS_DC)
1940 {
1941 char buffer[64], *val, *name, uname[64];
1942 int i, ap, l, b, idx=0, unknown=0;
1943 #ifdef EXIF_DEBUG
1944 int info_tag;
1945 #endif
1946 image_info_value *info_value;
1947 image_info_data *info_data;
1948 zval *tmpi, *array = NULL;
1949
1950 #ifdef EXIF_DEBUG
1951 /* php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Adding %d infos from section %s", image_info->info_list[section_index].count, exif_get_sectionname(section_index));*/
1952 #endif
1953 if (image_info->info_list[section_index].count) {
1954 if (sub_array) {
1955 MAKE_STD_ZVAL(tmpi);
1956 array_init(tmpi);
1957 } else {
1958 tmpi = value;
1959 }
1960
1961 for(i=0; i<image_info->info_list[section_index].count; i++) {
1962 info_data = &image_info->info_list[section_index].list[i];
1963 #ifdef EXIF_DEBUG
1964 info_tag = info_data->tag; /* conversion */
1965 #endif
1966 info_value = &info_data->value;
1967 if (!(name = info_data->name)) {
1968 snprintf(uname, sizeof(uname), "%d", unknown++);
1969 name = uname;
1970 }
1971 #ifdef EXIF_DEBUG
1972 /* php_error_docref(NULL TSRMLS_CC, 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) TSRMLS_CC), 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));*/
1973 #endif
1974 if (info_data->length==0) {
1975 add_assoc_null(tmpi, name);
1976 } else {
1977 switch (info_data->format) {
1978 default:
1979 /* Standard says more types possible but skip them...
1980 * but allow users to handle data if they know how to
1981 * So not return but use type UNDEFINED
1982 * return;
1983 */
1984 case TAG_FMT_BYTE:
1985 case TAG_FMT_SBYTE:
1986 case TAG_FMT_UNDEFINED:
1987 if (!info_value->s) {
1988 add_assoc_stringl(tmpi, name, "", 0, 1);
1989 } else {
1990 add_assoc_stringl(tmpi, name, info_value->s, info_data->length, 1);
1991 }
1992 break;
1993
1994 case TAG_FMT_STRING:
1995 if (!(val = info_value->s)) {
1996 val = "";
1997 }
1998 if (section_index==SECTION_COMMENT) {
1999 add_index_string(tmpi, idx++, val, 1);
2000 } else {
2001 add_assoc_string(tmpi, name, val, 1);
2002 }
2003 break;
2004
2005 case TAG_FMT_URATIONAL:
2006 case TAG_FMT_SRATIONAL:
2007 /*case TAG_FMT_BYTE:
2008 case TAG_FMT_SBYTE:*/
2009 case TAG_FMT_USHORT:
2010 case TAG_FMT_SSHORT:
2011 case TAG_FMT_SINGLE:
2012 case TAG_FMT_DOUBLE:
2013 case TAG_FMT_ULONG:
2014 case TAG_FMT_SLONG:
2015 /* now the rest, first see if it becomes an array */
2016 if ((l = info_data->length) > 1) {
2017 array = NULL;
2018 MAKE_STD_ZVAL(array);
2019 array_init(array);
2020 }
2021 for(ap=0; ap<l; ap++) {
2022 if (l>1) {
2023 info_value = &info_data->value.list[ap];
2024 }
2025 switch (info_data->format) {
2026 case TAG_FMT_BYTE:
2027 if (l>1) {
2028 info_value = &info_data->value;
2029 for (b=0;b<l;b++) {
2030 add_index_long(array, b, (int)(info_value->s[b]));
2031 }
2032 break;
2033 }
2034 case TAG_FMT_USHORT:
2035 case TAG_FMT_ULONG:
2036 if (l==1) {
2037 add_assoc_long(tmpi, name, (int)info_value->u);
2038 } else {
2039 add_index_long(array, ap, (int)info_value->u);
2040 }
2041 break;
2042
2043 case TAG_FMT_URATIONAL:
2044 snprintf(buffer, sizeof(buffer), "%i/%i", info_value->ur.num, info_value->ur.den);
2045 if (l==1) {
2046 add_assoc_string(tmpi, name, buffer, 1);
2047 } else {
2048 add_index_string(array, ap, buffer, 1);
2049 }
2050 break;
2051
2052 case TAG_FMT_SBYTE:
2053 if (l>1) {
2054 info_value = &info_data->value;
2055 for (b=0;b<l;b++) {
2056 add_index_long(array, ap, (int)info_value->s[b]);
2057 }
2058 break;
2059 }
2060 case TAG_FMT_SSHORT:
2061 case TAG_FMT_SLONG:
2062 if (l==1) {
2063 add_assoc_long(tmpi, name, info_value->i);
2064 } else {
2065 add_index_long(array, ap, info_value->i);
2066 }
2067 break;
2068
2069 case TAG_FMT_SRATIONAL:
2070 snprintf(buffer, sizeof(buffer), "%i/%i", info_value->sr.num, info_value->sr.den);
2071 if (l==1) {
2072 add_assoc_string(tmpi, name, buffer, 1);
2073 } else {
2074 add_index_string(array, ap, buffer, 1);
2075 }
2076 break;
2077
2078 case TAG_FMT_SINGLE:
2079 if (l==1) {
2080 add_assoc_double(tmpi, name, info_value->f);
2081 } else {
2082 add_index_double(array, ap, info_value->f);
2083 }
2084 break;
2085
2086 case TAG_FMT_DOUBLE:
2087 if (l==1) {
2088 add_assoc_double(tmpi, name, info_value->d);
2089 } else {
2090 add_index_double(array, ap, info_value->d);
2091 }
2092 break;
2093 }
2094 info_value = &info_data->value.list[ap];
2095 }
2096 if (l>1) {
2097 add_assoc_zval(tmpi, name, array);
2098 }
2099 break;
2100 }
2101 }
2102 }
2103 if (sub_array) {
2104 add_assoc_zval(value, exif_get_sectionname(section_index), tmpi);
2105 }
2106 }
2107 }
2108 /* }}} */
2109
2110 /* {{{ Markers
2111 JPEG markers consist of one or more 0xFF bytes, followed by a marker
2112 code byte (which is not an FF). Here are the marker codes of interest
2113 in this program. (See jdmarker.c for a more complete list.)
2114 */
2115
2116 #define M_TEM 0x01 /* temp for arithmetic coding */
2117 #define M_RES 0x02 /* reserved */
2118 #define M_SOF0 0xC0 /* Start Of Frame N */
2119 #define M_SOF1 0xC1 /* N indicates which compression process */
2120 #define M_SOF2 0xC2 /* Only SOF0-SOF2 are now in common use */
2121 #define M_SOF3 0xC3
2122 #define M_DHT 0xC4
2123 #define M_SOF5 0xC5 /* NB: codes C4 and CC are NOT SOF markers */
2124 #define M_SOF6 0xC6
2125 #define M_SOF7 0xC7
2126 #define M_JPEG 0x08 /* reserved for extensions */
2127 #define M_SOF9 0xC9
2128 #define M_SOF10 0xCA
2129 #define M_SOF11 0xCB
2130 #define M_DAC 0xCC /* arithmetic table */
2131 #define M_SOF13 0xCD
2132 #define M_SOF14 0xCE
2133 #define M_SOF15 0xCF
2134 #define M_RST0 0xD0 /* restart segment */
2135 #define M_RST1 0xD1
2136 #define M_RST2 0xD2
2137 #define M_RST3 0xD3
2138 #define M_RST4 0xD4
2139 #define M_RST5 0xD5
2140 #define M_RST6 0xD6
2141 #define M_RST7 0xD7
2142 #define M_SOI 0xD8 /* Start Of Image (beginning of datastream) */
2143 #define M_EOI 0xD9 /* End Of Image (end of datastream) */
2144 #define M_SOS 0xDA /* Start Of Scan (begins compressed data) */
2145 #define M_DQT 0xDB
2146 #define M_DNL 0xDC
2147 #define M_DRI 0xDD
2148 #define M_DHP 0xDE
2149 #define M_EXP 0xDF
2150 #define M_APP0 0xE0 /* JPEG: 'JFIFF' AND (additional 'JFXX') */
2151 #define M_EXIF 0xE1 /* Exif Attribute Information */
2152 #define M_APP2 0xE2 /* Flash Pix Extension Data? */
2153 #define M_APP3 0xE3
2154 #define M_APP4 0xE4
2155 #define M_APP5 0xE5
2156 #define M_APP6 0xE6
2157 #define M_APP7 0xE7
2158 #define M_APP8 0xE8
2159 #define M_APP9 0xE9
2160 #define M_APP10 0xEA
2161 #define M_APP11 0xEB
2162 #define M_APP12 0xEC
2163 #define M_APP13 0xED /* IPTC International Press Telecommunications Council */
2164 #define M_APP14 0xEE /* Software, Copyright? */
2165 #define M_APP15 0xEF
2166 #define M_JPG0 0xF0
2167 #define M_JPG1 0xF1
2168 #define M_JPG2 0xF2
2169 #define M_JPG3 0xF3
2170 #define M_JPG4 0xF4
2171 #define M_JPG5 0xF5
2172 #define M_JPG6 0xF6
2173 #define M_JPG7 0xF7
2174 #define M_JPG8 0xF8
2175 #define M_JPG9 0xF9
2176 #define M_JPG10 0xFA
2177 #define M_JPG11 0xFB
2178 #define M_JPG12 0xFC
2179 #define M_JPG13 0xFD
2180 #define M_COM 0xFE /* COMment */
2181
2182 #define M_PSEUDO 0x123 /* Extra value. */
2183
2184 /* }}} */
2185
2186 /* {{{ jpeg2000 markers
2187 */
2188 /* Markers x30 - x3F do not have a segment */
2189 /* Markers x00, x01, xFE, xC0 - xDF ISO/IEC 10918-1 -> M_<xx> */
2190 /* Markers xF0 - xF7 ISO/IEC 10918-3 */
2191 /* Markers xF7 - xF8 ISO/IEC 14495-1 */
2192 /* XY=Main/Tile-header:(R:required, N:not_allowed, O:optional, L:last_marker) */
2193 #define JC_SOC 0x4F /* NN, Start of codestream */
2194 #define JC_SIZ 0x51 /* RN, Image and tile size */
2195 #define JC_COD 0x52 /* RO, Codeing style defaulte */
2196 #define JC_COC 0x53 /* OO, Coding style component */
2197 #define JC_TLM 0x55 /* ON, Tile part length main header */
2198 #define JC_PLM 0x57 /* ON, Packet length main header */
2199 #define JC_PLT 0x58 /* NO, Packet length tile part header */
2200 #define JC_QCD 0x5C /* RO, Quantization default */
2201 #define JC_QCC 0x5D /* OO, Quantization component */
2202 #define JC_RGN 0x5E /* OO, Region of interest */
2203 #define JC_POD 0x5F /* OO, Progression order default */
2204 #define JC_PPM 0x60 /* ON, Packed packet headers main header */
2205 #define JC_PPT 0x61 /* NO, Packet packet headers tile part header */
2206 #define JC_CME 0x64 /* OO, Comment: "LL E <text>" E=0:binary, E=1:ascii */
2207 #define JC_SOT 0x90 /* NR, Start of tile */
2208 #define JC_SOP 0x91 /* NO, Start of packeter default */
2209 #define JC_EPH 0x92 /* NO, End of packet header */
2210 #define JC_SOD 0x93 /* NL, Start of data */
2211 #define JC_EOC 0xD9 /* NN, End of codestream */
2212 /* }}} */
2213
2214 /* {{{ exif_process_COM
2215 Process a COM marker.
2216 We want to print out the marker contents as legible text;
2217 we must guard against random junk and varying newline representations.
2218 */
exif_process_COM(image_info_type * image_info,char * value,size_t length TSRMLS_DC)2219 static void exif_process_COM (image_info_type *image_info, char *value, size_t length TSRMLS_DC)
2220 {
2221 exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length-2, value+2 TSRMLS_CC);
2222 }
2223 /* }}} */
2224
2225 /* {{{ exif_process_CME
2226 Process a CME marker.
2227 We want to print out the marker contents as legible text;
2228 we must guard against random junk and varying newline representations.
2229 */
2230 #ifdef EXIF_JPEG2000
exif_process_CME(image_info_type * image_info,char * value,size_t length TSRMLS_DC)2231 static void exif_process_CME (image_info_type *image_info, char *value, size_t length TSRMLS_DC)
2232 {
2233 if (length>3) {
2234 switch(value[2]) {
2235 case 0:
2236 exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, length, value TSRMLS_CC);
2237 break;
2238 case 1:
2239 exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length, value);
2240 break;
2241 default:
2242 php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Undefined JPEG2000 comment encoding");
2243 break;
2244 }
2245 } else {
2246 exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, 0, NULL);
2247 php_error_docref(NULL TSRMLS_CC, E_NOTICE, "JPEG2000 comment section too small");
2248 }
2249 }
2250 #endif
2251 /* }}} */
2252
2253 /* {{{ exif_process_SOFn
2254 * Process a SOFn marker. This is useful for the image dimensions */
exif_process_SOFn(uchar * Data,int marker,jpeg_sof_info * result)2255 static void exif_process_SOFn (uchar *Data, int marker, jpeg_sof_info *result)
2256 {
2257 /* 0xFF SOSn SectLen(2) Bits(1) Height(2) Width(2) Channels(1) 3*Channels (1) */
2258 result->bits_per_sample = Data[2];
2259 result->height = php_jpg_get16(Data+3);
2260 result->width = php_jpg_get16(Data+5);
2261 result->num_components = Data[7];
2262
2263 /* switch (marker) {
2264 case M_SOF0: process = "Baseline"; break;
2265 case M_SOF1: process = "Extended sequential"; break;
2266 case M_SOF2: process = "Progressive"; break;
2267 case M_SOF3: process = "Lossless"; break;
2268 case M_SOF5: process = "Differential sequential"; break;
2269 case M_SOF6: process = "Differential progressive"; break;
2270 case M_SOF7: process = "Differential lossless"; break;
2271 case M_SOF9: process = "Extended sequential, arithmetic coding"; break;
2272 case M_SOF10: process = "Progressive, arithmetic coding"; break;
2273 case M_SOF11: process = "Lossless, arithmetic coding"; break;
2274 case M_SOF13: process = "Differential sequential, arithmetic coding"; break;
2275 case M_SOF14: process = "Differential progressive, arithmetic coding"; break;
2276 case M_SOF15: process = "Differential lossless, arithmetic coding"; break;
2277 default: process = "Unknown"; break;
2278 }*/
2279 }
2280 /* }}} */
2281
2282 /* forward declarations */
2283 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 TSRMLS_DC);
2284 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 TSRMLS_DC);
2285
2286 /* {{{ exif_get_markername
2287 Get name of marker */
2288 #ifdef EXIF_DEBUG
exif_get_markername(int marker)2289 static char * exif_get_markername(int marker)
2290 {
2291 switch(marker) {
2292 case 0xC0: return "SOF0";
2293 case 0xC1: return "SOF1";
2294 case 0xC2: return "SOF2";
2295 case 0xC3: return "SOF3";
2296 case 0xC4: return "DHT";
2297 case 0xC5: return "SOF5";
2298 case 0xC6: return "SOF6";
2299 case 0xC7: return "SOF7";
2300 case 0xC9: return "SOF9";
2301 case 0xCA: return "SOF10";
2302 case 0xCB: return "SOF11";
2303 case 0xCD: return "SOF13";
2304 case 0xCE: return "SOF14";
2305 case 0xCF: return "SOF15";
2306 case 0xD8: return "SOI";
2307 case 0xD9: return "EOI";
2308 case 0xDA: return "SOS";
2309 case 0xDB: return "DQT";
2310 case 0xDC: return "DNL";
2311 case 0xDD: return "DRI";
2312 case 0xDE: return "DHP";
2313 case 0xDF: return "EXP";
2314 case 0xE0: return "APP0";
2315 case 0xE1: return "EXIF";
2316 case 0xE2: return "FPIX";
2317 case 0xE3: return "APP3";
2318 case 0xE4: return "APP4";
2319 case 0xE5: return "APP5";
2320 case 0xE6: return "APP6";
2321 case 0xE7: return "APP7";
2322 case 0xE8: return "APP8";
2323 case 0xE9: return "APP9";
2324 case 0xEA: return "APP10";
2325 case 0xEB: return "APP11";
2326 case 0xEC: return "APP12";
2327 case 0xED: return "APP13";
2328 case 0xEE: return "APP14";
2329 case 0xEF: return "APP15";
2330 case 0xF0: return "JPG0";
2331 case 0xFD: return "JPG13";
2332 case 0xFE: return "COM";
2333 case 0x01: return "TEM";
2334 }
2335 return "Unknown";
2336 }
2337 #endif
2338 /* }}} */
2339
2340 /* {{{ proto string exif_tagname(index)
2341 Get headername for index or false if not defined */
PHP_FUNCTION(exif_tagname)2342 PHP_FUNCTION(exif_tagname)
2343 {
2344 long tag;
2345 char *szTemp;
2346
2347 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &tag) == FAILURE) {
2348 return;
2349 }
2350
2351 szTemp = exif_get_tagname(tag, NULL, 0, tag_table_IFD TSRMLS_CC);
2352
2353 if (tag < 0 || !szTemp || !szTemp[0]) {
2354 RETURN_FALSE;
2355 }
2356
2357 RETURN_STRING(szTemp, 1)
2358 }
2359 /* }}} */
2360
2361 /* {{{ exif_ifd_make_value
2362 * Create a value for an ifd from an info_data pointer */
exif_ifd_make_value(image_info_data * info_data,int motorola_intel TSRMLS_DC)2363 static void* exif_ifd_make_value(image_info_data *info_data, int motorola_intel TSRMLS_DC) {
2364 size_t byte_count;
2365 char *value_ptr, *data_ptr;
2366 size_t i;
2367
2368 image_info_value *info_value;
2369
2370 byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
2371 value_ptr = safe_emalloc(max(byte_count, 4), 1, 0);
2372 memset(value_ptr, 0, 4);
2373 if (!info_data->length) {
2374 return value_ptr;
2375 }
2376 if (info_data->format == TAG_FMT_UNDEFINED || info_data->format == TAG_FMT_STRING
2377 || (byte_count>1 && (info_data->format == TAG_FMT_BYTE || info_data->format == TAG_FMT_SBYTE))
2378 ) {
2379 memmove(value_ptr, info_data->value.s, byte_count);
2380 return value_ptr;
2381 } else if (info_data->format == TAG_FMT_BYTE) {
2382 *value_ptr = info_data->value.u;
2383 return value_ptr;
2384 } else if (info_data->format == TAG_FMT_SBYTE) {
2385 *value_ptr = info_data->value.i;
2386 return value_ptr;
2387 } else {
2388 data_ptr = value_ptr;
2389 for(i=0; i<info_data->length; i++) {
2390 if (info_data->length==1) {
2391 info_value = &info_data->value;
2392 } else {
2393 info_value = &info_data->value.list[i];
2394 }
2395 switch(info_data->format) {
2396 case TAG_FMT_USHORT:
2397 php_ifd_set16u(data_ptr, info_value->u, motorola_intel);
2398 data_ptr += 2;
2399 break;
2400 case TAG_FMT_ULONG:
2401 php_ifd_set32u(data_ptr, info_value->u, motorola_intel);
2402 data_ptr += 4;
2403 break;
2404 case TAG_FMT_SSHORT:
2405 php_ifd_set16u(data_ptr, info_value->i, motorola_intel);
2406 data_ptr += 2;
2407 break;
2408 case TAG_FMT_SLONG:
2409 php_ifd_set32u(data_ptr, info_value->i, motorola_intel);
2410 data_ptr += 4;
2411 break;
2412 case TAG_FMT_URATIONAL:
2413 php_ifd_set32u(data_ptr, info_value->sr.num, motorola_intel);
2414 php_ifd_set32u(data_ptr+4, info_value->sr.den, motorola_intel);
2415 data_ptr += 8;
2416 break;
2417 case TAG_FMT_SRATIONAL:
2418 php_ifd_set32u(data_ptr, info_value->ur.num, motorola_intel);
2419 php_ifd_set32u(data_ptr+4, info_value->ur.den, motorola_intel);
2420 data_ptr += 8;
2421 break;
2422 case TAG_FMT_SINGLE:
2423 memmove(data_ptr, &info_value->f, 4);
2424 data_ptr += 4;
2425 break;
2426 case TAG_FMT_DOUBLE:
2427 memmove(data_ptr, &info_value->d, 8);
2428 data_ptr += 8;
2429 break;
2430 }
2431 }
2432 }
2433 return value_ptr;
2434 }
2435 /* }}} */
2436
2437 /* {{{ exif_thumbnail_build
2438 * Check and build thumbnail */
exif_thumbnail_build(image_info_type * ImageInfo TSRMLS_DC)2439 static void exif_thumbnail_build(image_info_type *ImageInfo TSRMLS_DC) {
2440 size_t new_size, new_move, new_value;
2441 char *new_data;
2442 void *value_ptr;
2443 int i, byte_count;
2444 image_info_list *info_list;
2445 image_info_data *info_data;
2446 #ifdef EXIF_DEBUG
2447 char tagname[64];
2448 #endif
2449
2450 if (!ImageInfo->read_thumbnail || !ImageInfo->Thumbnail.offset || !ImageInfo->Thumbnail.size) {
2451 return; /* ignore this call */
2452 }
2453 #ifdef EXIF_DEBUG
2454 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: filetype = %d", ImageInfo->Thumbnail.filetype);
2455 #endif
2456 switch(ImageInfo->Thumbnail.filetype) {
2457 default:
2458 case IMAGE_FILETYPE_JPEG:
2459 /* done */
2460 break;
2461 case IMAGE_FILETYPE_TIFF_II:
2462 case IMAGE_FILETYPE_TIFF_MM:
2463 info_list = &ImageInfo->info_list[SECTION_THUMBNAIL];
2464 new_size = 8 + 2 + info_list->count * 12 + 4;
2465 #ifdef EXIF_DEBUG
2466 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: size of signature + directory(%d): 0x%02X", info_list->count, new_size);
2467 #endif
2468 new_value= new_size; /* offset for ifd values outside ifd directory */
2469 for (i=0; i<info_list->count; i++) {
2470 info_data = &info_list->list[i];
2471 byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
2472 if (byte_count > 4) {
2473 new_size += byte_count;
2474 }
2475 }
2476 new_move = new_size;
2477 new_data = safe_erealloc(ImageInfo->Thumbnail.data, 1, ImageInfo->Thumbnail.size, new_size);
2478 ImageInfo->Thumbnail.data = new_data;
2479 memmove(ImageInfo->Thumbnail.data + new_move, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
2480 ImageInfo->Thumbnail.size += new_size;
2481 /* fill in data */
2482 if (ImageInfo->motorola_intel) {
2483 memmove(new_data, "MM\x00\x2a\x00\x00\x00\x08", 8);
2484 } else {
2485 memmove(new_data, "II\x2a\x00\x08\x00\x00\x00", 8);
2486 }
2487 new_data += 8;
2488 php_ifd_set16u(new_data, info_list->count, ImageInfo->motorola_intel);
2489 new_data += 2;
2490 for (i=0; i<info_list->count; i++) {
2491 info_data = &info_list->list[i];
2492 byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
2493 #ifdef EXIF_DEBUG
2494 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 TSRMLS_CC), (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);
2495 #endif
2496 if (info_data->tag==TAG_STRIP_OFFSETS || info_data->tag==TAG_JPEG_INTERCHANGE_FORMAT) {
2497 php_ifd_set16u(new_data + 0, info_data->tag, ImageInfo->motorola_intel);
2498 php_ifd_set16u(new_data + 2, TAG_FMT_ULONG, ImageInfo->motorola_intel);
2499 php_ifd_set32u(new_data + 4, 1, ImageInfo->motorola_intel);
2500 php_ifd_set32u(new_data + 8, new_move, ImageInfo->motorola_intel);
2501 } else {
2502 php_ifd_set16u(new_data + 0, info_data->tag, ImageInfo->motorola_intel);
2503 php_ifd_set16u(new_data + 2, info_data->format, ImageInfo->motorola_intel);
2504 php_ifd_set32u(new_data + 4, info_data->length, ImageInfo->motorola_intel);
2505 value_ptr = exif_ifd_make_value(info_data, ImageInfo->motorola_intel TSRMLS_CC);
2506 if (byte_count <= 4) {
2507 memmove(new_data+8, value_ptr, 4);
2508 } else {
2509 php_ifd_set32u(new_data+8, new_value, ImageInfo->motorola_intel);
2510 #ifdef EXIF_DEBUG
2511 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: writing with value offset: 0x%04X + 0x%02X", new_value, byte_count);
2512 #endif
2513 memmove(ImageInfo->Thumbnail.data+new_value, value_ptr, byte_count);
2514 new_value += byte_count;
2515 }
2516 efree(value_ptr);
2517 }
2518 new_data += 12;
2519 }
2520 memset(new_data, 0, 4); /* next ifd pointer */
2521 #ifdef EXIF_DEBUG
2522 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: created");
2523 #endif
2524 break;
2525 }
2526 }
2527 /* }}} */
2528
2529 /* {{{ exif_thumbnail_extract
2530 * Grab the thumbnail, corrected */
exif_thumbnail_extract(image_info_type * ImageInfo,char * offset,size_t length TSRMLS_DC)2531 static void exif_thumbnail_extract(image_info_type *ImageInfo, char *offset, size_t length TSRMLS_DC) {
2532 if (ImageInfo->Thumbnail.data) {
2533 exif_error_docref("exif_read_data#error_mult_thumb" EXIFERR_CC, ImageInfo, E_WARNING, "Multiple possible thumbnails");
2534 return; /* Should not happen */
2535 }
2536 if (!ImageInfo->read_thumbnail) {
2537 return; /* ignore this call */
2538 }
2539 /* according to exif2.1, the thumbnail is not supposed to be greater than 64K */
2540 if (ImageInfo->Thumbnail.size >= 65536
2541 || ImageInfo->Thumbnail.size <= 0
2542 || ImageInfo->Thumbnail.offset <= 0
2543 ) {
2544 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Illegal thumbnail size/offset");
2545 return;
2546 }
2547 /* Check to make sure we are not going to go past the ExifLength */
2548 if (ImageInfo->Thumbnail.size > length
2549 || (ImageInfo->Thumbnail.offset + ImageInfo->Thumbnail.size) > length
2550 || ImageInfo->Thumbnail.offset > length - ImageInfo->Thumbnail.size
2551 ) {
2552 EXIF_ERRLOG_THUMBEOF(ImageInfo)
2553 return;
2554 }
2555 ImageInfo->Thumbnail.data = estrndup(offset + ImageInfo->Thumbnail.offset, ImageInfo->Thumbnail.size);
2556 exif_thumbnail_build(ImageInfo TSRMLS_CC);
2557 }
2558 /* }}} */
2559
2560 /* {{{ exif_process_undefined
2561 * 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 TSRMLS_DC)2562 static int exif_process_undefined(char **result, char *value, size_t byte_count TSRMLS_DC) {
2563 /* we cannot use strlcpy - here the problem is that we have to copy NUL
2564 * chars up to byte_count, we also have to add a single NUL character to
2565 * force end of string.
2566 * estrndup does not return length
2567 */
2568 if (byte_count) {
2569 (*result) = estrndup(value, byte_count); /* NULL @ byte_count!!! */
2570 return byte_count+1;
2571 }
2572 return 0;
2573 }
2574 /* }}} */
2575
2576 /* {{{ exif_process_string_raw
2577 * 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)2578 static int exif_process_string_raw(char **result, char *value, size_t byte_count) {
2579 /* we cannot use strlcpy - here the problem is that we have to copy NUL
2580 * chars up to byte_count, we also have to add a single NUL character to
2581 * force end of string.
2582 */
2583 if (byte_count) {
2584 (*result) = safe_emalloc(byte_count, 1, 1);
2585 memcpy(*result, value, byte_count);
2586 (*result)[byte_count] = '\0';
2587 return byte_count+1;
2588 }
2589 return 0;
2590 }
2591 /* }}} */
2592
2593 /* {{{ exif_process_string
2594 * Copy a string in Exif header to a character string and return length of allocated buffer if any.
2595 * 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 TSRMLS_DC)2596 static int exif_process_string(char **result, char *value, size_t byte_count TSRMLS_DC) {
2597 /* we cannot use strlcpy - here the problem is that we cannot use strlen to
2598 * determin length of string and we cannot use strlcpy with len=byte_count+1
2599 * because then we might get into an EXCEPTION if we exceed an allocated
2600 * memory page...so we use php_strnlen in conjunction with memcpy and add the NUL
2601 * char.
2602 * estrdup would sometimes allocate more memory and does not return length
2603 */
2604 if ((byte_count=php_strnlen(value, byte_count)) > 0) {
2605 return exif_process_undefined(result, value, byte_count TSRMLS_CC);
2606 }
2607 (*result) = estrndup("", 1); /* force empty string */
2608 return byte_count+1;
2609 }
2610 /* }}} */
2611
2612 /* {{{ exif_process_user_comment
2613 * Process UserComment in IFD. */
exif_process_user_comment(image_info_type * ImageInfo,char ** pszInfoPtr,char ** pszEncoding,char * szValuePtr,int ByteCount TSRMLS_DC)2614 static int exif_process_user_comment(image_info_type *ImageInfo, char **pszInfoPtr, char **pszEncoding, char *szValuePtr, int ByteCount TSRMLS_DC)
2615 {
2616 int a;
2617 char *decode;
2618 size_t len;;
2619
2620 *pszEncoding = NULL;
2621 /* Copy the comment */
2622 if (ByteCount>=8) {
2623 const zend_encoding *from, *to;
2624 if (!memcmp(szValuePtr, "UNICODE\0", 8)) {
2625 *pszEncoding = estrdup((const char*)szValuePtr);
2626 szValuePtr = szValuePtr+8;
2627 ByteCount -= 8;
2628 /* First try to detect BOM: ZERO WIDTH NOBREAK SPACE (FEFF 16)
2629 * since we have no encoding support for the BOM yet we skip that.
2630 */
2631 if (!memcmp(szValuePtr, "\xFE\xFF", 2)) {
2632 decode = "UCS-2BE";
2633 szValuePtr = szValuePtr+2;
2634 ByteCount -= 2;
2635 } else if (!memcmp(szValuePtr, "\xFF\xFE", 2)) {
2636 decode = "UCS-2LE";
2637 szValuePtr = szValuePtr+2;
2638 ByteCount -= 2;
2639 } else if (ImageInfo->motorola_intel) {
2640 decode = ImageInfo->decode_unicode_be;
2641 } else {
2642 decode = ImageInfo->decode_unicode_le;
2643 }
2644 to = zend_multibyte_fetch_encoding(ImageInfo->encode_unicode TSRMLS_CC);
2645 from = zend_multibyte_fetch_encoding(decode TSRMLS_CC);
2646 /* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX */
2647 if (!to || !from || zend_multibyte_encoding_converter(
2648 (unsigned char**)pszInfoPtr,
2649 &len,
2650 (unsigned char*)szValuePtr,
2651 ByteCount,
2652 to,
2653 from
2654 TSRMLS_CC) == (size_t)-1) {
2655 len = exif_process_string_raw(pszInfoPtr, szValuePtr, ByteCount);
2656 }
2657 return len;
2658 } else if (!memcmp(szValuePtr, "ASCII\0\0\0", 8)) {
2659 *pszEncoding = estrdup((const char*)szValuePtr);
2660 szValuePtr = szValuePtr+8;
2661 ByteCount -= 8;
2662 } else if (!memcmp(szValuePtr, "JIS\0\0\0\0\0", 8)) {
2663 /* JIS should be tanslated to MB or we leave it to the user - leave it to the user */
2664 *pszEncoding = estrdup((const char*)szValuePtr);
2665 szValuePtr = szValuePtr+8;
2666 ByteCount -= 8;
2667 /* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX */
2668 to = zend_multibyte_fetch_encoding(ImageInfo->encode_jis TSRMLS_CC);
2669 from = zend_multibyte_fetch_encoding(ImageInfo->motorola_intel ? ImageInfo->decode_jis_be : ImageInfo->decode_jis_le TSRMLS_CC);
2670 if (!to || !from || zend_multibyte_encoding_converter(
2671 (unsigned char**)pszInfoPtr,
2672 &len,
2673 (unsigned char*)szValuePtr,
2674 ByteCount,
2675 to,
2676 from
2677 TSRMLS_CC) == (size_t)-1) {
2678 len = exif_process_string_raw(pszInfoPtr, szValuePtr, ByteCount);
2679 }
2680 return len;
2681 } else if (!memcmp(szValuePtr, "\0\0\0\0\0\0\0\0", 8)) {
2682 /* 8 NULL means undefined and should be ASCII... */
2683 *pszEncoding = estrdup("UNDEFINED");
2684 szValuePtr = szValuePtr+8;
2685 ByteCount -= 8;
2686 }
2687 }
2688
2689 /* Olympus has this padded with trailing spaces. Remove these first. */
2690 if (ByteCount>0) {
2691 for (a=ByteCount-1;a && szValuePtr[a]==' ';a--) {
2692 (szValuePtr)[a] = '\0';
2693 }
2694 }
2695
2696 /* normal text without encoding */
2697 exif_process_string(pszInfoPtr, szValuePtr, ByteCount TSRMLS_CC);
2698 return strlen(*pszInfoPtr);
2699 }
2700 /* }}} */
2701
2702 /* {{{ exif_process_unicode
2703 * Process unicode field in IFD. */
exif_process_unicode(image_info_type * ImageInfo,xp_field_type * xp_field,int tag,char * szValuePtr,int ByteCount TSRMLS_DC)2704 static int exif_process_unicode(image_info_type *ImageInfo, xp_field_type *xp_field, int tag, char *szValuePtr, int ByteCount TSRMLS_DC)
2705 {
2706 xp_field->tag = tag;
2707 xp_field->value = NULL;
2708 /* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX */
2709 if (zend_multibyte_encoding_converter(
2710 (unsigned char**)&xp_field->value,
2711 &xp_field->size,
2712 (unsigned char*)szValuePtr,
2713 ByteCount,
2714 zend_multibyte_fetch_encoding(ImageInfo->encode_unicode TSRMLS_CC),
2715 zend_multibyte_fetch_encoding(ImageInfo->motorola_intel ? ImageInfo->decode_unicode_be : ImageInfo->decode_unicode_le TSRMLS_CC)
2716 TSRMLS_CC) == (size_t)-1) {
2717 xp_field->size = exif_process_string_raw(&xp_field->value, szValuePtr, ByteCount);
2718 }
2719 return xp_field->size;
2720 }
2721 /* }}} */
2722
2723 /* {{{ exif_process_IFD_in_MAKERNOTE
2724 * 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 TSRMLS_DC)2725 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 TSRMLS_DC)
2726 {
2727 int de, i=0, section_index = SECTION_MAKERNOTE;
2728 int NumDirEntries, old_motorola_intel, offset_diff;
2729 const maker_note_type *maker_note;
2730 char *dir_start;
2731 int data_len;
2732
2733 for (i=0; i<=sizeof(maker_note_array)/sizeof(maker_note_type); i++) {
2734 if (i==sizeof(maker_note_array)/sizeof(maker_note_type)) {
2735 #ifdef EXIF_DEBUG
2736 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "No maker note data found. Detected maker: %s (length = %d)", ImageInfo->make, strlen(ImageInfo->make));
2737 #endif
2738 /* unknown manufacturer, not an error, use it as a string */
2739 return TRUE;
2740 }
2741
2742 maker_note = maker_note_array+i;
2743
2744 /*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "check (%s,%s)", maker_note->make?maker_note->make:"", maker_note->model?maker_note->model:"");*/
2745 if (maker_note->make && (!ImageInfo->make || strcmp(maker_note->make, ImageInfo->make)))
2746 continue;
2747 if (maker_note->model && (!ImageInfo->model || strcmp(maker_note->model, ImageInfo->model)))
2748 continue;
2749 if (maker_note->id_string && strncmp(maker_note->id_string, value_ptr, maker_note->id_string_len))
2750 continue;
2751 break;
2752 }
2753
2754 if (maker_note->offset >= value_len) {
2755 /* Do not go past the value end */
2756 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);
2757 return FALSE;
2758 }
2759
2760 dir_start = value_ptr + maker_note->offset;
2761
2762 #ifdef EXIF_DEBUG
2763 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));
2764 #endif
2765
2766 ImageInfo->sections_found |= FOUND_MAKERNOTE;
2767
2768 old_motorola_intel = ImageInfo->motorola_intel;
2769 switch (maker_note->byte_order) {
2770 case MN_ORDER_INTEL:
2771 ImageInfo->motorola_intel = 0;
2772 break;
2773 case MN_ORDER_MOTOROLA:
2774 ImageInfo->motorola_intel = 1;
2775 break;
2776 default:
2777 case MN_ORDER_NORMAL:
2778 break;
2779 }
2780
2781 NumDirEntries = php_ifd_get16u(dir_start, ImageInfo->motorola_intel);
2782
2783 switch (maker_note->offset_mode) {
2784 case MN_OFFSET_MAKER:
2785 offset_base = value_ptr;
2786 data_len = value_len;
2787 break;
2788 case MN_OFFSET_GUESS:
2789 if (maker_note->offset + 10 + 4 >= value_len) {
2790 /* Can not read dir_start+10 since it's beyond value end */
2791 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "IFD data too short: 0x%04X", value_len);
2792 return FALSE;
2793 }
2794 offset_diff = 2 + NumDirEntries*12 + 4 - php_ifd_get32u(dir_start+10, ImageInfo->motorola_intel);
2795 #ifdef EXIF_DEBUG
2796 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);
2797 #endif
2798 if (offset_diff < 0 || offset_diff >= value_len ) {
2799 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);
2800 return FALSE;
2801 }
2802 offset_base = value_ptr + offset_diff;
2803 data_len = value_len - offset_diff;
2804 break;
2805 default:
2806 case MN_OFFSET_NORMAL:
2807 break;
2808 }
2809
2810 if ((2+NumDirEntries*12) > value_len) {
2811 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);
2812 return FALSE;
2813 }
2814
2815 for (de=0;de<NumDirEntries;de++) {
2816 if (!exif_process_IFD_TAG(ImageInfo, dir_start + 2 + 12 * de,
2817 offset_base, data_len, displacement, section_index, 0, maker_note->tag_table TSRMLS_CC)) {
2818 return FALSE;
2819 }
2820 }
2821 ImageInfo->motorola_intel = old_motorola_intel;
2822 /* NextDirOffset (must be NULL) = php_ifd_get32u(dir_start+2+12*de, ImageInfo->motorola_intel);*/
2823 #ifdef EXIF_DEBUG
2824 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Subsection %s done", exif_get_sectionname(SECTION_MAKERNOTE));
2825 #endif
2826 return TRUE;
2827 }
2828 /* }}} */
2829
2830 /* {{{ exif_process_IFD_TAG
2831 * 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 TSRMLS_DC)2832 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 TSRMLS_DC)
2833 {
2834 size_t length;
2835 int tag, format, components;
2836 char *value_ptr, tagname[64], cbuf[32], *outside=NULL;
2837 size_t byte_count, offset_val, fpos, fgot;
2838 int64_t byte_count_signed;
2839 xp_field_type *tmp_xp;
2840 #ifdef EXIF_DEBUG
2841 char *dump_data;
2842 int dump_free;
2843 #endif /* EXIF_DEBUG */
2844
2845 /* Protect against corrupt headers */
2846 if (ImageInfo->ifd_nesting_level > MAX_IFD_NESTING_LEVEL) {
2847 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "corrupt EXIF header: maximum directory nesting level reached");
2848 return FALSE;
2849 }
2850 ImageInfo->ifd_nesting_level++;
2851
2852 tag = php_ifd_get16u(dir_entry, ImageInfo->motorola_intel);
2853 format = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
2854 components = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel);
2855
2856 if (!format || format > NUM_FORMATS) {
2857 /* (-1) catches illegal zero case as unsigned underflows to positive large. */
2858 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 TSRMLS_CC), format);
2859 format = TAG_FMT_BYTE;
2860 /*return TRUE;*/
2861 }
2862
2863 if (components < 0) {
2864 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal components(%d)", tag, exif_get_tagname(tag, tagname, -12, tag_table TSRMLS_CC), components);
2865 return FALSE;
2866 }
2867
2868 byte_count_signed = (int64_t)components * php_tiff_bytes_per_format[format];
2869
2870 if (byte_count_signed < 0 || (byte_count_signed > INT32_MAX)) {
2871 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 TSRMLS_CC));
2872 return FALSE;
2873 }
2874
2875 byte_count = (size_t)byte_count_signed;
2876
2877 if (byte_count > 4) {
2878 offset_val = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
2879 /* If its bigger than 4 bytes, the dir entry contains an offset. */
2880 value_ptr = offset_base+offset_val;
2881 /*
2882 dir_entry is ImageInfo->file.list[sn].data+2+i*12
2883 offset_base is ImageInfo->file.list[sn].data-dir_offset
2884 dir_entry - offset_base is dir_offset+2+i*12
2885 */
2886 if (byte_count > IFDlength || offset_val > IFDlength-byte_count || value_ptr < dir_entry || offset_val < (size_t)(dir_entry-offset_base)) {
2887 /* It is important to check for IMAGE_FILETYPE_TIFF
2888 * JPEG does not use absolute pointers instead its pointers are
2889 * relative to the start of the TIFF header in APP1 section. */
2890 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)) {
2891 if (value_ptr < dir_entry) {
2892 /* we can read this if offset_val > 0 */
2893 /* some files have their values in other parts of the file */
2894 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 TSRMLS_CC), offset_val, dir_entry);
2895 } else {
2896 /* this is for sure not allowed */
2897 /* exception are IFD pointers */
2898 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 TSRMLS_CC), offset_val, byte_count, offset_val+byte_count, IFDlength);
2899 }
2900 return FALSE;
2901 }
2902 if (byte_count>sizeof(cbuf)) {
2903 /* mark as outside range and get buffer */
2904 value_ptr = safe_emalloc(byte_count, 1, 0);
2905 outside = value_ptr;
2906 } else {
2907 /* In most cases we only access a small range so
2908 * it is faster to use a static buffer there
2909 * BUT it offers also the possibility to have
2910 * pointers read without the need to free them
2911 * explicitley before returning. */
2912 memset(&cbuf, 0, sizeof(cbuf));
2913 value_ptr = cbuf;
2914 }
2915
2916 fpos = php_stream_tell(ImageInfo->infile);
2917 php_stream_seek(ImageInfo->infile, displacement+offset_val, SEEK_SET);
2918 fgot = php_stream_tell(ImageInfo->infile);
2919 if (fgot!=displacement+offset_val) {
2920 EFREE_IF(outside);
2921 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Wrong file pointer: 0x%08X != 0x%08X", fgot, displacement+offset_val);
2922 return FALSE;
2923 }
2924 fgot = php_stream_read(ImageInfo->infile, value_ptr, byte_count);
2925 php_stream_seek(ImageInfo->infile, fpos, SEEK_SET);
2926 if (fgot<byte_count) {
2927 EFREE_IF(outside);
2928 EXIF_ERRLOG_FILEEOF(ImageInfo)
2929 return FALSE;
2930 }
2931 }
2932 } else {
2933 /* 4 bytes or less and value is in the dir entry itself */
2934 value_ptr = dir_entry+8;
2935 offset_val= value_ptr-offset_base;
2936 }
2937
2938 ImageInfo->sections_found |= FOUND_ANY_TAG;
2939 #ifdef EXIF_DEBUG
2940 dump_data = exif_dump_data(&dump_free, format, components, length, ImageInfo->motorola_intel, value_ptr TSRMLS_CC);
2941 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 TSRMLS_CC), 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);
2942 if (dump_free) {
2943 efree(dump_data);
2944 }
2945 #endif
2946
2947 if (section_index==SECTION_THUMBNAIL) {
2948 if (!ImageInfo->Thumbnail.data) {
2949 switch(tag) {
2950 case TAG_IMAGEWIDTH:
2951 case TAG_COMP_IMAGE_WIDTH:
2952 ImageInfo->Thumbnail.width = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
2953 break;
2954
2955 case TAG_IMAGEHEIGHT:
2956 case TAG_COMP_IMAGE_HEIGHT:
2957 ImageInfo->Thumbnail.height = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
2958 break;
2959
2960 case TAG_STRIP_OFFSETS:
2961 case TAG_JPEG_INTERCHANGE_FORMAT:
2962 /* accept both formats */
2963 ImageInfo->Thumbnail.offset = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
2964 break;
2965
2966 case TAG_STRIP_BYTE_COUNTS:
2967 if (ImageInfo->FileType == IMAGE_FILETYPE_TIFF_II || ImageInfo->FileType == IMAGE_FILETYPE_TIFF_MM) {
2968 ImageInfo->Thumbnail.filetype = ImageInfo->FileType;
2969 } else {
2970 /* motorola is easier to read */
2971 ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_TIFF_MM;
2972 }
2973 ImageInfo->Thumbnail.size = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
2974 break;
2975
2976 case TAG_JPEG_INTERCHANGE_FORMAT_LEN:
2977 if (ImageInfo->Thumbnail.filetype == IMAGE_FILETYPE_UNKNOWN) {
2978 ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_JPEG;
2979 ImageInfo->Thumbnail.size = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
2980 }
2981 break;
2982 }
2983 }
2984 } else {
2985 if (section_index==SECTION_IFD0 || section_index==SECTION_EXIF)
2986 switch(tag) {
2987 case TAG_COPYRIGHT:
2988 /* check for "<photographer> NUL <editor> NUL" */
2989 if (byte_count>1 && (length=php_strnlen(value_ptr, byte_count)) > 0) {
2990 if (length<byte_count-1) {
2991 /* When there are any characters after the first NUL */
2992 ImageInfo->CopyrightPhotographer = estrdup(value_ptr);
2993 ImageInfo->CopyrightEditor = estrndup(value_ptr+length+1, byte_count-length-1);
2994 spprintf(&ImageInfo->Copyright, 0, "%s, %s", ImageInfo->CopyrightPhotographer, ImageInfo->CopyrightEditor);
2995 /* format = TAG_FMT_UNDEFINED; this musn't be ASCII */
2996 /* but we are not supposed to change this */
2997 /* keep in mind that image_info does not store editor value */
2998 } else {
2999 ImageInfo->Copyright = estrndup(value_ptr, byte_count);
3000 }
3001 }
3002 break;
3003
3004 case TAG_USERCOMMENT:
3005 ImageInfo->UserCommentLength = exif_process_user_comment(ImageInfo, &(ImageInfo->UserComment), &(ImageInfo->UserCommentEncoding), value_ptr, byte_count TSRMLS_CC);
3006 break;
3007
3008 case TAG_XP_TITLE:
3009 case TAG_XP_COMMENTS:
3010 case TAG_XP_AUTHOR:
3011 case TAG_XP_KEYWORDS:
3012 case TAG_XP_SUBJECT:
3013 tmp_xp = (xp_field_type*)safe_erealloc(ImageInfo->xp_fields.list, (ImageInfo->xp_fields.count+1), sizeof(xp_field_type), 0);
3014 ImageInfo->sections_found |= FOUND_WINXP;
3015 ImageInfo->xp_fields.list = tmp_xp;
3016 ImageInfo->xp_fields.count++;
3017 exif_process_unicode(ImageInfo, &(ImageInfo->xp_fields.list[ImageInfo->xp_fields.count-1]), tag, value_ptr, byte_count TSRMLS_CC);
3018 break;
3019
3020 case TAG_FNUMBER:
3021 /* Simplest way of expressing aperture, so I trust it the most.
3022 (overwrite previously computed value if there is one) */
3023 ImageInfo->ApertureFNumber = (float)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
3024 break;
3025
3026 case TAG_APERTURE:
3027 case TAG_MAX_APERTURE:
3028 /* More relevant info always comes earlier, so only use this field if we don't
3029 have appropriate aperture information yet. */
3030 if (ImageInfo->ApertureFNumber == 0) {
3031 ImageInfo->ApertureFNumber
3032 = (float)exp(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC)*log(2)*0.5);
3033 }
3034 break;
3035
3036 case TAG_SHUTTERSPEED:
3037 /* More complicated way of expressing exposure time, so only use
3038 this value if we don't already have it from somewhere else.
3039 SHUTTERSPEED comes after EXPOSURE TIME
3040 */
3041 if (ImageInfo->ExposureTime == 0) {
3042 ImageInfo->ExposureTime
3043 = (float)(1/exp(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC)*log(2)));
3044 }
3045 break;
3046 case TAG_EXPOSURETIME:
3047 ImageInfo->ExposureTime = -1;
3048 break;
3049
3050 case TAG_COMP_IMAGE_WIDTH:
3051 ImageInfo->ExifImageWidth = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
3052 break;
3053
3054 case TAG_FOCALPLANE_X_RES:
3055 ImageInfo->FocalplaneXRes = exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
3056 break;
3057
3058 case TAG_SUBJECT_DISTANCE:
3059 /* Inidcates the distacne the autofocus camera is focused to.
3060 Tends to be less accurate as distance increases. */
3061 ImageInfo->Distance = (float)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
3062 break;
3063
3064 case TAG_FOCALPLANE_RESOLUTION_UNIT:
3065 switch((int)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC)) {
3066 case 1: ImageInfo->FocalplaneUnits = 25.4; break; /* inch */
3067 case 2:
3068 /* According to the information I was using, 2 measn meters.
3069 But looking at the Cannon powershot's files, inches is the only
3070 sensible value. */
3071 ImageInfo->FocalplaneUnits = 25.4;
3072 break;
3073
3074 case 3: ImageInfo->FocalplaneUnits = 10; break; /* centimeter */
3075 case 4: ImageInfo->FocalplaneUnits = 1; break; /* milimeter */
3076 case 5: ImageInfo->FocalplaneUnits = .001; break; /* micrometer */
3077 }
3078 break;
3079
3080 case TAG_SUB_IFD:
3081 if (format==TAG_FMT_IFD) {
3082 /* If this is called we are either in a TIFFs thumbnail or a JPEG where we cannot handle it */
3083 /* TIFF thumbnail: our data structure cannot store a thumbnail of a thumbnail */
3084 /* JPEG do we have the data area and what to do with it */
3085 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Skip SUB IFD");
3086 }
3087 break;
3088
3089 case TAG_MAKE:
3090 ImageInfo->make = estrndup(value_ptr, byte_count);
3091 break;
3092 case TAG_MODEL:
3093 ImageInfo->model = estrndup(value_ptr, byte_count);
3094 break;
3095
3096 case TAG_MAKER_NOTE:
3097 if (!exif_process_IFD_in_MAKERNOTE(ImageInfo, value_ptr, byte_count, offset_base, IFDlength, displacement TSRMLS_CC)) {
3098 EFREE_IF(outside);
3099 return FALSE;
3100 }
3101 break;
3102
3103 case TAG_EXIF_IFD_POINTER:
3104 case TAG_GPS_IFD_POINTER:
3105 case TAG_INTEROP_IFD_POINTER:
3106 if (ReadNextIFD) {
3107 char *Subdir_start;
3108 int sub_section_index = 0;
3109 switch(tag) {
3110 case TAG_EXIF_IFD_POINTER:
3111 #ifdef EXIF_DEBUG
3112 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found EXIF");
3113 #endif
3114 ImageInfo->sections_found |= FOUND_EXIF;
3115 sub_section_index = SECTION_EXIF;
3116 break;
3117 case TAG_GPS_IFD_POINTER:
3118 #ifdef EXIF_DEBUG
3119 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found GPS");
3120 #endif
3121 ImageInfo->sections_found |= FOUND_GPS;
3122 sub_section_index = SECTION_GPS;
3123 break;
3124 case TAG_INTEROP_IFD_POINTER:
3125 #ifdef EXIF_DEBUG
3126 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found INTEROPERABILITY");
3127 #endif
3128 ImageInfo->sections_found |= FOUND_INTEROP;
3129 sub_section_index = SECTION_INTEROP;
3130 break;
3131 }
3132 Subdir_start = offset_base + php_ifd_get32u(value_ptr, ImageInfo->motorola_intel);
3133 if (Subdir_start < offset_base || Subdir_start > offset_base+IFDlength) {
3134 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD Pointer");
3135 return FALSE;
3136 }
3137 if (!exif_process_IFD_in_JPEG(ImageInfo, Subdir_start, offset_base, IFDlength, displacement, sub_section_index TSRMLS_CC)) {
3138 return FALSE;
3139 }
3140 #ifdef EXIF_DEBUG
3141 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Subsection %s done", exif_get_sectionname(sub_section_index));
3142 #endif
3143 }
3144 }
3145 }
3146 exif_iif_add_tag(ImageInfo, section_index, exif_get_tagname(tag, tagname, sizeof(tagname), tag_table TSRMLS_CC), tag, format, components, value_ptr TSRMLS_CC);
3147 EFREE_IF(outside);
3148 return TRUE;
3149 }
3150 /* }}} */
3151
3152 /* {{{ exif_process_IFD_in_JPEG
3153 * 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 TSRMLS_DC)3154 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 TSRMLS_DC)
3155 {
3156 int de;
3157 int NumDirEntries;
3158 int NextDirOffset;
3159
3160 #ifdef EXIF_DEBUG
3161 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process %s (x%04X(=%d))", exif_get_sectionname(section_index), IFDlength, IFDlength);
3162 #endif
3163
3164 ImageInfo->sections_found |= FOUND_IFD0;
3165
3166 if ((dir_start + 2) >= (offset_base+IFDlength)) {
3167 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size");
3168 return FALSE;
3169 }
3170
3171 NumDirEntries = php_ifd_get16u(dir_start, ImageInfo->motorola_intel);
3172
3173 if ((dir_start+2+NumDirEntries*12) > (offset_base+IFDlength)) {
3174 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);
3175 return FALSE;
3176 }
3177
3178 for (de=0;de<NumDirEntries;de++) {
3179 if (!exif_process_IFD_TAG(ImageInfo, dir_start + 2 + 12 * de,
3180 offset_base, IFDlength, displacement, section_index, 1, exif_get_tag_table(section_index) TSRMLS_CC)) {
3181 return FALSE;
3182 }
3183 }
3184 /*
3185 * Ignore IFD2 if it purportedly exists
3186 */
3187 if (section_index == SECTION_THUMBNAIL) {
3188 return TRUE;
3189 }
3190 /*
3191 * Hack to make it process IDF1 I hope
3192 * There are 2 IDFs, the second one holds the keys (0x0201 and 0x0202) to the thumbnail
3193 */
3194 if ((dir_start+2+12*de + 4) >= (offset_base+IFDlength)) {
3195 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size");
3196 return FALSE;
3197 }
3198 NextDirOffset = php_ifd_get32u(dir_start+2+12*de, ImageInfo->motorola_intel);
3199 if (NextDirOffset) {
3200 /* the next line seems false but here IFDlength means length of all IFDs */
3201 if (offset_base + NextDirOffset < offset_base || offset_base + NextDirOffset > offset_base+IFDlength) {
3202 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD offset");
3203 return FALSE;
3204 }
3205 /* That is the IFD for the first thumbnail */
3206 #ifdef EXIF_DEBUG
3207 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Expect next IFD to be thumbnail");
3208 #endif
3209 if (exif_process_IFD_in_JPEG(ImageInfo, offset_base + NextDirOffset, offset_base, IFDlength, displacement, SECTION_THUMBNAIL TSRMLS_CC)) {
3210 #ifdef EXIF_DEBUG
3211 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail size: 0x%04X", ImageInfo->Thumbnail.size);
3212 #endif
3213 if (ImageInfo->Thumbnail.filetype != IMAGE_FILETYPE_UNKNOWN
3214 && ImageInfo->Thumbnail.size
3215 && ImageInfo->Thumbnail.offset
3216 && ImageInfo->read_thumbnail
3217 ) {
3218 exif_thumbnail_extract(ImageInfo, offset_base, IFDlength TSRMLS_CC);
3219 }
3220 return TRUE;
3221 } else {
3222 return FALSE;
3223 }
3224 }
3225 return TRUE;
3226 }
3227 /* }}} */
3228
3229 /* {{{ exif_process_TIFF_in_JPEG
3230 Process a TIFF header in a JPEG file
3231 */
exif_process_TIFF_in_JPEG(image_info_type * ImageInfo,char * CharBuf,size_t length,size_t displacement TSRMLS_DC)3232 static void exif_process_TIFF_in_JPEG(image_info_type *ImageInfo, char *CharBuf, size_t length, size_t displacement TSRMLS_DC)
3233 {
3234 unsigned exif_value_2a, offset_of_ifd;
3235
3236 /* set the thumbnail stuff to nothing so we can test to see if they get set up */
3237 if (memcmp(CharBuf, "II", 2) == 0) {
3238 ImageInfo->motorola_intel = 0;
3239 } else if (memcmp(CharBuf, "MM", 2) == 0) {
3240 ImageInfo->motorola_intel = 1;
3241 } else {
3242 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF alignment marker");
3243 return;
3244 }
3245
3246 /* Check the next two values for correctness. */
3247 if (length < 8) {
3248 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF start (1)");
3249 return;
3250 }
3251 exif_value_2a = php_ifd_get16u(CharBuf+2, ImageInfo->motorola_intel);
3252 offset_of_ifd = php_ifd_get32u(CharBuf+4, ImageInfo->motorola_intel);
3253 if (exif_value_2a != 0x2a || offset_of_ifd < 0x08) {
3254 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF start (1)");
3255 return;
3256 }
3257 if (offset_of_ifd > length) {
3258 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid IFD start");
3259 return;
3260 }
3261
3262 ImageInfo->sections_found |= FOUND_IFD0;
3263 /* First directory starts at offset 8. Offsets starts at 0. */
3264 exif_process_IFD_in_JPEG(ImageInfo, CharBuf+offset_of_ifd, CharBuf, length/*-14*/, displacement, SECTION_IFD0 TSRMLS_CC);
3265
3266 #ifdef EXIF_DEBUG
3267 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process TIFF in JPEG done");
3268 #endif
3269
3270 /* Compute the CCD width, in milimeters. */
3271 if (ImageInfo->FocalplaneXRes != 0) {
3272 ImageInfo->CCDWidth = (float)(ImageInfo->ExifImageWidth * ImageInfo->FocalplaneUnits / ImageInfo->FocalplaneXRes);
3273 }
3274 }
3275 /* }}} */
3276
3277 /* {{{ exif_process_APP1
3278 Process an JPEG APP1 block marker
3279 Describes all the drivel that most digital cameras include...
3280 */
exif_process_APP1(image_info_type * ImageInfo,char * CharBuf,size_t length,size_t displacement TSRMLS_DC)3281 static void exif_process_APP1(image_info_type *ImageInfo, char *CharBuf, size_t length, size_t displacement TSRMLS_DC)
3282 {
3283 /* Check the APP1 for Exif Identifier Code */
3284 static const uchar ExifHeader[] = {0x45, 0x78, 0x69, 0x66, 0x00, 0x00};
3285 if (length <= 8 || memcmp(CharBuf+2, ExifHeader, 6)) {
3286 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Incorrect APP1 Exif Identifier Code");
3287 return;
3288 }
3289 exif_process_TIFF_in_JPEG(ImageInfo, CharBuf + 8, length - 8, displacement+8 TSRMLS_CC);
3290 #ifdef EXIF_DEBUG
3291 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process APP1/EXIF done");
3292 #endif
3293 }
3294 /* }}} */
3295
3296 /* {{{ exif_process_APP12
3297 Process an JPEG APP12 block marker used by OLYMPUS
3298 */
exif_process_APP12(image_info_type * ImageInfo,char * buffer,size_t length TSRMLS_DC)3299 static void exif_process_APP12(image_info_type *ImageInfo, char *buffer, size_t length TSRMLS_DC)
3300 {
3301 size_t l1, l2=0;
3302
3303 if ((l1 = php_strnlen(buffer+2, length-2)) > 0) {
3304 exif_iif_add_tag(ImageInfo, SECTION_APP12, "Company", TAG_NONE, TAG_FMT_STRING, l1, buffer+2 TSRMLS_CC);
3305 if (length > 2+l1+1) {
3306 l2 = php_strnlen(buffer+2+l1+1, length-2-l1-1);
3307 exif_iif_add_tag(ImageInfo, SECTION_APP12, "Info", TAG_NONE, TAG_FMT_STRING, l2, buffer+2+l1+1 TSRMLS_CC);
3308 }
3309 }
3310 #ifdef EXIF_DEBUG
3311 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process section APP12 with l1=%d, l2=%d done", l1, l2);
3312 #endif
3313 }
3314 /* }}} */
3315
3316 /* {{{ exif_scan_JPEG_header
3317 * Parse the marker stream until SOS or EOI is seen; */
exif_scan_JPEG_header(image_info_type * ImageInfo TSRMLS_DC)3318 static int exif_scan_JPEG_header(image_info_type *ImageInfo TSRMLS_DC)
3319 {
3320 int section, sn;
3321 int marker = 0, last_marker = M_PSEUDO, comment_correction=1;
3322 unsigned int ll, lh;
3323 uchar *Data;
3324 size_t fpos, size, got, itemlen;
3325 jpeg_sof_info sof_info;
3326
3327 for(section=0;;section++) {
3328 #ifdef EXIF_DEBUG
3329 fpos = php_stream_tell(ImageInfo->infile);
3330 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Needing section %d @ 0x%08X", ImageInfo->file.count, fpos);
3331 #endif
3332
3333 /* get marker byte, swallowing possible padding */
3334 /* some software does not count the length bytes of COM section */
3335 /* one company doing so is very much envolved in JPEG... so we accept too */
3336 if (last_marker==M_COM && comment_correction) {
3337 comment_correction = 2;
3338 }
3339 do {
3340 if ((marker = php_stream_getc(ImageInfo->infile)) == EOF) {
3341 EXIF_ERRLOG_CORRUPT(ImageInfo)
3342 return FALSE;
3343 }
3344 if (last_marker==M_COM && comment_correction>0) {
3345 if (marker!=0xFF) {
3346 marker = 0xff;
3347 comment_correction--;
3348 } else {
3349 last_marker = M_PSEUDO; /* stop skipping 0 for M_COM */
3350 }
3351 }
3352 } while (marker == 0xff);
3353 if (last_marker==M_COM && !comment_correction) {
3354 exif_error_docref("exif_read_data#error_mcom" EXIFERR_CC, ImageInfo, E_NOTICE, "Image has corrupt COM section: some software set wrong length information");
3355 }
3356 if (last_marker==M_COM && comment_correction)
3357 return M_EOI; /* ah illegal: char after COM section not 0xFF */
3358
3359 fpos = php_stream_tell(ImageInfo->infile);
3360
3361 if (marker == 0xff) {
3362 /* 0xff is legal padding, but if we get that many, something's wrong. */
3363 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "To many padding bytes");
3364 return FALSE;
3365 }
3366
3367 /* Read the length of the section. */
3368 if ((lh = php_stream_getc(ImageInfo->infile)) == EOF) {
3369 EXIF_ERRLOG_CORRUPT(ImageInfo)
3370 return FALSE;
3371 }
3372 if ((ll = php_stream_getc(ImageInfo->infile)) == EOF) {
3373 EXIF_ERRLOG_CORRUPT(ImageInfo)
3374 return FALSE;
3375 }
3376
3377 itemlen = (lh << 8) | ll;
3378
3379 if (itemlen < 2) {
3380 #ifdef EXIF_DEBUG
3381 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s, Section length: 0x%02X%02X", EXIF_ERROR_CORRUPT, lh, ll);
3382 #else
3383 EXIF_ERRLOG_CORRUPT(ImageInfo)
3384 #endif
3385 return FALSE;
3386 }
3387
3388 sn = exif_file_sections_add(ImageInfo, marker, itemlen+1, NULL);
3389 Data = ImageInfo->file.list[sn].data;
3390
3391 /* Store first two pre-read bytes. */
3392 Data[0] = (uchar)lh;
3393 Data[1] = (uchar)ll;
3394
3395 got = php_stream_read(ImageInfo->infile, (char*)(Data+2), itemlen-2); /* Read the whole section. */
3396 if (got != itemlen-2) {
3397 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);
3398 return FALSE;
3399 }
3400
3401 #ifdef EXIF_DEBUG
3402 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);
3403 #endif
3404 switch(marker) {
3405 case M_SOS: /* stop before hitting compressed data */
3406 /* If reading entire image is requested, read the rest of the data. */
3407 if (ImageInfo->read_all) {
3408 /* Determine how much file is left. */
3409 fpos = php_stream_tell(ImageInfo->infile);
3410 size = ImageInfo->FileSize - fpos;
3411 sn = exif_file_sections_add(ImageInfo, M_PSEUDO, size, NULL);
3412 Data = ImageInfo->file.list[sn].data;
3413 got = php_stream_read(ImageInfo->infile, (char*)Data, size);
3414 if (got != size) {
3415 EXIF_ERRLOG_FILEEOF(ImageInfo)
3416 return FALSE;
3417 }
3418 }
3419 return TRUE;
3420
3421 case M_EOI: /* in case it's a tables-only JPEG stream */
3422 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "No image in jpeg!");
3423 return (ImageInfo->sections_found&(~FOUND_COMPUTED)) ? TRUE : FALSE;
3424
3425 case M_COM: /* Comment section */
3426 exif_process_COM(ImageInfo, (char *)Data, itemlen TSRMLS_CC);
3427 break;
3428
3429 case M_EXIF:
3430 if (!(ImageInfo->sections_found&FOUND_IFD0)) {
3431 /*ImageInfo->sections_found |= FOUND_EXIF;*/
3432 /* Seen files from some 'U-lead' software with Vivitar scanner
3433 that uses marker 31 later in the file (no clue what for!) */
3434 exif_process_APP1(ImageInfo, (char *)Data, itemlen, fpos TSRMLS_CC);
3435 }
3436 break;
3437
3438 case M_APP12:
3439 exif_process_APP12(ImageInfo, (char *)Data, itemlen TSRMLS_CC);
3440 break;
3441
3442
3443 case M_SOF0:
3444 case M_SOF1:
3445 case M_SOF2:
3446 case M_SOF3:
3447 case M_SOF5:
3448 case M_SOF6:
3449 case M_SOF7:
3450 case M_SOF9:
3451 case M_SOF10:
3452 case M_SOF11:
3453 case M_SOF13:
3454 case M_SOF14:
3455 case M_SOF15:
3456 if ((itemlen - 2) < 6) {
3457 return FALSE;
3458 }
3459
3460 exif_process_SOFn(Data, marker, &sof_info);
3461 ImageInfo->Width = sof_info.width;
3462 ImageInfo->Height = sof_info.height;
3463 if (sof_info.num_components == 3) {
3464 ImageInfo->IsColor = 1;
3465 } else {
3466 ImageInfo->IsColor = 0;
3467 }
3468 break;
3469 default:
3470 /* skip any other marker silently. */
3471 break;
3472 }
3473
3474 /* keep track of last marker */
3475 last_marker = marker;
3476 }
3477 #ifdef EXIF_DEBUG
3478 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Done");
3479 #endif
3480 return TRUE;
3481 }
3482 /* }}} */
3483
3484 /* {{{ exif_scan_thumbnail
3485 * scan JPEG in thumbnail (memory) */
exif_scan_thumbnail(image_info_type * ImageInfo TSRMLS_DC)3486 static int exif_scan_thumbnail(image_info_type *ImageInfo TSRMLS_DC)
3487 {
3488 uchar c, *data = (uchar*)ImageInfo->Thumbnail.data;
3489 int n, marker;
3490 size_t length=2, pos=0;
3491 jpeg_sof_info sof_info;
3492
3493 if (!data) {
3494 return FALSE; /* nothing to do here */
3495 }
3496 if (memcmp(data, "\xFF\xD8\xFF", 3)) {
3497 if (!ImageInfo->Thumbnail.width && !ImageInfo->Thumbnail.height) {
3498 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Thumbnail is not a JPEG image");
3499 }
3500 return FALSE;
3501 }
3502 for (;;) {
3503 pos += length;
3504 if (pos>=ImageInfo->Thumbnail.size)
3505 return FALSE;
3506 c = data[pos++];
3507 if (pos>=ImageInfo->Thumbnail.size)
3508 return FALSE;
3509 if (c != 0xFF) {
3510 return FALSE;
3511 }
3512 n = 8;
3513 while ((c = data[pos++]) == 0xFF && n--) {
3514 if (pos+3>=ImageInfo->Thumbnail.size)
3515 return FALSE;
3516 /* +3 = pos++ of next check when reaching marker + 2 bytes for length */
3517 }
3518 if (c == 0xFF)
3519 return FALSE;
3520 marker = c;
3521 length = php_jpg_get16(data+pos);
3522 if (pos+length>=ImageInfo->Thumbnail.size) {
3523 return FALSE;
3524 }
3525 #ifdef EXIF_DEBUG
3526 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);
3527 #endif
3528 switch (marker) {
3529 case M_SOF0:
3530 case M_SOF1:
3531 case M_SOF2:
3532 case M_SOF3:
3533 case M_SOF5:
3534 case M_SOF6:
3535 case M_SOF7:
3536 case M_SOF9:
3537 case M_SOF10:
3538 case M_SOF11:
3539 case M_SOF13:
3540 case M_SOF14:
3541 case M_SOF15:
3542 /* handle SOFn block */
3543 exif_process_SOFn(data+pos, marker, &sof_info);
3544 ImageInfo->Thumbnail.height = sof_info.height;
3545 ImageInfo->Thumbnail.width = sof_info.width;
3546 #ifdef EXIF_DEBUG
3547 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: size: %d * %d", sof_info.width, sof_info.height);
3548 #endif
3549 return TRUE;
3550
3551 case M_SOS:
3552 case M_EOI:
3553 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Could not compute size of thumbnail");
3554 return FALSE;
3555 break;
3556
3557 default:
3558 /* just skip */
3559 break;
3560 }
3561 }
3562
3563 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Could not compute size of thumbnail");
3564 return FALSE;
3565 }
3566 /* }}} */
3567
3568 /* {{{ exif_process_IFD_in_TIFF
3569 * Parse the TIFF header; */
exif_process_IFD_in_TIFF(image_info_type * ImageInfo,size_t dir_offset,int section_index TSRMLS_DC)3570 static int exif_process_IFD_in_TIFF(image_info_type *ImageInfo, size_t dir_offset, int section_index TSRMLS_DC)
3571 {
3572 int i, sn, num_entries, sub_section_index = 0;
3573 unsigned char *dir_entry;
3574 char tagname[64];
3575 size_t ifd_size, dir_size, entry_offset, next_offset, entry_length, entry_value=0, fgot;
3576 int entry_tag , entry_type;
3577 tag_table_type tag_table = exif_get_tag_table(section_index);
3578
3579 if (ImageInfo->ifd_nesting_level > MAX_IFD_NESTING_LEVEL) {
3580 return FALSE;
3581 }
3582
3583 if (ImageInfo->FileSize >= dir_offset+2) {
3584 sn = exif_file_sections_add(ImageInfo, M_PSEUDO, 2, NULL);
3585 #ifdef EXIF_DEBUG
3586 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);
3587 #endif
3588 php_stream_seek(ImageInfo->infile, dir_offset, SEEK_SET); /* we do not know the order of sections */
3589 php_stream_read(ImageInfo->infile, (char*)ImageInfo->file.list[sn].data, 2);
3590 num_entries = php_ifd_get16u(ImageInfo->file.list[sn].data, ImageInfo->motorola_intel);
3591 dir_size = 2/*num dir entries*/ +12/*length of entry*/*num_entries +4/* offset to next ifd (points to thumbnail or NULL)*/;
3592 if (ImageInfo->FileSize >= dir_offset+dir_size) {
3593 #ifdef EXIF_DEBUG
3594 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);
3595 #endif
3596 if (exif_file_sections_realloc(ImageInfo, sn, dir_size TSRMLS_CC)) {
3597 return FALSE;
3598 }
3599 php_stream_read(ImageInfo->infile, (char*)(ImageInfo->file.list[sn].data+2), dir_size-2);
3600 /*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Dump: %s", exif_char_dump(ImageInfo->file.list[sn].data, dir_size, 0));*/
3601 next_offset = php_ifd_get32u(ImageInfo->file.list[sn].data + dir_size - 4, ImageInfo->motorola_intel);
3602 #ifdef EXIF_DEBUG
3603 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF done, next offset x%04X", next_offset);
3604 #endif
3605 /* now we have the directory we can look how long it should be */
3606 ifd_size = dir_size;
3607 for(i=0;i<num_entries;i++) {
3608 dir_entry = ImageInfo->file.list[sn].data+2+i*12;
3609 entry_tag = php_ifd_get16u(dir_entry+0, ImageInfo->motorola_intel);
3610 entry_type = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
3611 if (entry_type > NUM_FORMATS) {
3612 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 TSRMLS_CC), entry_type);
3613 /* Since this is repeated in exif_process_IFD_TAG make it a notice here */
3614 /* and make it a warning in the exif_process_IFD_TAG which is called */
3615 /* elsewhere. */
3616 entry_type = TAG_FMT_BYTE;
3617 /*The next line would break the image on writeback: */
3618 /* php_ifd_set16u(dir_entry+2, entry_type, ImageInfo->motorola_intel);*/
3619 }
3620 entry_length = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel) * php_tiff_bytes_per_format[entry_type];
3621 if (entry_length <= 4) {
3622 switch(entry_type) {
3623 case TAG_FMT_USHORT:
3624 entry_value = php_ifd_get16u(dir_entry+8, ImageInfo->motorola_intel);
3625 break;
3626 case TAG_FMT_SSHORT:
3627 entry_value = php_ifd_get16s(dir_entry+8, ImageInfo->motorola_intel);
3628 break;
3629 case TAG_FMT_ULONG:
3630 entry_value = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
3631 break;
3632 case TAG_FMT_SLONG:
3633 entry_value = php_ifd_get32s(dir_entry+8, ImageInfo->motorola_intel);
3634 break;
3635 }
3636 switch(entry_tag) {
3637 case TAG_IMAGEWIDTH:
3638 case TAG_COMP_IMAGE_WIDTH:
3639 ImageInfo->Width = entry_value;
3640 break;
3641 case TAG_IMAGEHEIGHT:
3642 case TAG_COMP_IMAGE_HEIGHT:
3643 ImageInfo->Height = entry_value;
3644 break;
3645 case TAG_PHOTOMETRIC_INTERPRETATION:
3646 switch (entry_value) {
3647 case PMI_BLACK_IS_ZERO:
3648 case PMI_WHITE_IS_ZERO:
3649 case PMI_TRANSPARENCY_MASK:
3650 ImageInfo->IsColor = 0;
3651 break;
3652 case PMI_RGB:
3653 case PMI_PALETTE_COLOR:
3654 case PMI_SEPARATED:
3655 case PMI_YCBCR:
3656 case PMI_CIELAB:
3657 ImageInfo->IsColor = 1;
3658 break;
3659 }
3660 break;
3661 }
3662 } else {
3663 entry_offset = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
3664 /* if entry needs expading ifd cache and entry is at end of current ifd cache. */
3665 /* otherwise there may be huge holes between two entries */
3666 if (entry_offset + entry_length > dir_offset + ifd_size
3667 && entry_offset == dir_offset + ifd_size) {
3668 ifd_size = entry_offset + entry_length - dir_offset;
3669 #ifdef EXIF_DEBUG
3670 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);
3671 #endif
3672 }
3673 }
3674 }
3675 if (ImageInfo->FileSize >= dir_offset + ImageInfo->file.list[sn].size) {
3676 if (ifd_size > dir_size) {
3677 if (dir_offset + ifd_size > ImageInfo->FileSize) {
3678 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);
3679 return FALSE;
3680 }
3681 if (exif_file_sections_realloc(ImageInfo, sn, ifd_size TSRMLS_CC)) {
3682 return FALSE;
3683 }
3684 /* read values not stored in directory itself */
3685 #ifdef EXIF_DEBUG
3686 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);
3687 #endif
3688 php_stream_read(ImageInfo->infile, (char*)(ImageInfo->file.list[sn].data+dir_size), ifd_size-dir_size);
3689 #ifdef EXIF_DEBUG
3690 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF, done");
3691 #endif
3692 }
3693 /* now process the tags */
3694 for(i=0;i<num_entries;i++) {
3695 dir_entry = ImageInfo->file.list[sn].data+2+i*12;
3696 entry_tag = php_ifd_get16u(dir_entry+0, ImageInfo->motorola_intel);
3697 entry_type = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
3698 /*entry_length = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel);*/
3699 if (entry_tag == TAG_EXIF_IFD_POINTER ||
3700 entry_tag == TAG_INTEROP_IFD_POINTER ||
3701 entry_tag == TAG_GPS_IFD_POINTER ||
3702 entry_tag == TAG_SUB_IFD
3703 ) {
3704 switch(entry_tag) {
3705 case TAG_EXIF_IFD_POINTER:
3706 ImageInfo->sections_found |= FOUND_EXIF;
3707 sub_section_index = SECTION_EXIF;
3708 break;
3709 case TAG_GPS_IFD_POINTER:
3710 ImageInfo->sections_found |= FOUND_GPS;
3711 sub_section_index = SECTION_GPS;
3712 break;
3713 case TAG_INTEROP_IFD_POINTER:
3714 ImageInfo->sections_found |= FOUND_INTEROP;
3715 sub_section_index = SECTION_INTEROP;
3716 break;
3717 case TAG_SUB_IFD:
3718 ImageInfo->sections_found |= FOUND_THUMBNAIL;
3719 sub_section_index = SECTION_THUMBNAIL;
3720 break;
3721 }
3722 entry_offset = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
3723 #ifdef EXIF_DEBUG
3724 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Next IFD: %s @x%04X", exif_get_sectionname(sub_section_index), entry_offset);
3725 #endif
3726 ImageInfo->ifd_nesting_level++;
3727 exif_process_IFD_in_TIFF(ImageInfo, entry_offset, sub_section_index TSRMLS_CC);
3728 if (section_index!=SECTION_THUMBNAIL && entry_tag==TAG_SUB_IFD) {
3729 if (ImageInfo->Thumbnail.filetype != IMAGE_FILETYPE_UNKNOWN
3730 && ImageInfo->Thumbnail.size
3731 && ImageInfo->Thumbnail.offset
3732 && ImageInfo->read_thumbnail
3733 ) {
3734 #ifdef EXIF_DEBUG
3735 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);
3736 #endif
3737 if (!ImageInfo->Thumbnail.data) {
3738 ImageInfo->Thumbnail.data = safe_emalloc(ImageInfo->Thumbnail.size, 1, 0);
3739 php_stream_seek(ImageInfo->infile, ImageInfo->Thumbnail.offset, SEEK_SET);
3740 fgot = php_stream_read(ImageInfo->infile, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
3741 if (fgot < ImageInfo->Thumbnail.size) {
3742 EXIF_ERRLOG_THUMBEOF(ImageInfo)
3743 efree(ImageInfo->Thumbnail.data);
3744 ImageInfo->Thumbnail.data = NULL;
3745 } else {
3746 exif_thumbnail_build(ImageInfo TSRMLS_CC);
3747 }
3748 }
3749 }
3750 }
3751 #ifdef EXIF_DEBUG
3752 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Next IFD: %s done", exif_get_sectionname(sub_section_index));
3753 #endif
3754 } else {
3755 if (!exif_process_IFD_TAG(ImageInfo, (char*)dir_entry,
3756 (char*)(ImageInfo->file.list[sn].data-dir_offset),
3757 ifd_size, 0, section_index, 0, tag_table TSRMLS_CC)) {
3758 return FALSE;
3759 }
3760 }
3761 }
3762 /* If we had a thumbnail in a SUB_IFD we have ANOTHER image in NEXT IFD */
3763 if (next_offset && section_index != SECTION_THUMBNAIL) {
3764 /* this should be a thumbnail IFD */
3765 /* the thumbnail itself is stored at Tag=StripOffsets */
3766 #ifdef EXIF_DEBUG
3767 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read next IFD (THUMBNAIL) at x%04X", next_offset);
3768 #endif
3769 ImageInfo->ifd_nesting_level++;
3770 exif_process_IFD_in_TIFF(ImageInfo, next_offset, SECTION_THUMBNAIL TSRMLS_CC);
3771 #ifdef EXIF_DEBUG
3772 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);
3773 #endif
3774 if (!ImageInfo->Thumbnail.data && ImageInfo->Thumbnail.offset && ImageInfo->Thumbnail.size && ImageInfo->read_thumbnail) {
3775 ImageInfo->Thumbnail.data = safe_emalloc(ImageInfo->Thumbnail.size, 1, 0);
3776 php_stream_seek(ImageInfo->infile, ImageInfo->Thumbnail.offset, SEEK_SET);
3777 fgot = php_stream_read(ImageInfo->infile, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
3778 if (fgot < ImageInfo->Thumbnail.size) {
3779 EXIF_ERRLOG_THUMBEOF(ImageInfo)
3780 efree(ImageInfo->Thumbnail.data);
3781 ImageInfo->Thumbnail.data = NULL;
3782 } else {
3783 exif_thumbnail_build(ImageInfo TSRMLS_CC);
3784 }
3785 }
3786 #ifdef EXIF_DEBUG
3787 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read next IFD (THUMBNAIL) done");
3788 #endif
3789 }
3790 return TRUE;
3791 } else {
3792 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);
3793 return FALSE;
3794 }
3795 } else {
3796 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);
3797 return FALSE;
3798 }
3799 } else {
3800 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);
3801 return FALSE;
3802 }
3803 }
3804 /* }}} */
3805
3806 /* {{{ exif_scan_FILE_header
3807 * Parse the marker stream until SOS or EOI is seen; */
exif_scan_FILE_header(image_info_type * ImageInfo TSRMLS_DC)3808 static int exif_scan_FILE_header(image_info_type *ImageInfo TSRMLS_DC)
3809 {
3810 unsigned char file_header[8];
3811 int ret = FALSE;
3812
3813 ImageInfo->FileType = IMAGE_FILETYPE_UNKNOWN;
3814
3815 if (ImageInfo->FileSize >= 2) {
3816 php_stream_seek(ImageInfo->infile, 0, SEEK_SET);
3817 if (php_stream_read(ImageInfo->infile, (char*)file_header, 2) != 2) {
3818 return FALSE;
3819 }
3820 if ((file_header[0]==0xff) && (file_header[1]==M_SOI)) {
3821 ImageInfo->FileType = IMAGE_FILETYPE_JPEG;
3822 if (exif_scan_JPEG_header(ImageInfo TSRMLS_CC)) {
3823 ret = TRUE;
3824 } else {
3825 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid JPEG file");
3826 }
3827 } else if (ImageInfo->FileSize >= 8) {
3828 if (php_stream_read(ImageInfo->infile, (char*)(file_header+2), 6) != 6) {
3829 return FALSE;
3830 }
3831 if (!memcmp(file_header, "II\x2A\x00", 4)) {
3832 ImageInfo->FileType = IMAGE_FILETYPE_TIFF_II;
3833 ImageInfo->motorola_intel = 0;
3834 #ifdef EXIF_DEBUG
3835 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "File has TIFF/II format");
3836 #endif
3837 ImageInfo->sections_found |= FOUND_IFD0;
3838 if (exif_process_IFD_in_TIFF(ImageInfo,
3839 php_ifd_get32u(file_header + 4, ImageInfo->motorola_intel),
3840 SECTION_IFD0 TSRMLS_CC)) {
3841 ret = TRUE;
3842 } else {
3843 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF file");
3844 }
3845 } else if (!memcmp(file_header, "MM\x00\x2a", 4)) {
3846 ImageInfo->FileType = IMAGE_FILETYPE_TIFF_MM;
3847 ImageInfo->motorola_intel = 1;
3848 #ifdef EXIF_DEBUG
3849 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "File has TIFF/MM format");
3850 #endif
3851 ImageInfo->sections_found |= FOUND_IFD0;
3852 if (exif_process_IFD_in_TIFF(ImageInfo,
3853 php_ifd_get32u(file_header + 4, ImageInfo->motorola_intel),
3854 SECTION_IFD0 TSRMLS_CC)) {
3855 ret = TRUE;
3856 } else {
3857 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF file");
3858 }
3859 } else {
3860 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "File not supported");
3861 return FALSE;
3862 }
3863 }
3864 } else {
3865 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "File too small (%d)", ImageInfo->FileSize);
3866 }
3867 return ret;
3868 }
3869 /* }}} */
3870
3871 /* {{{ exif_discard_imageinfo
3872 Discard data scanned by exif_read_file.
3873 */
exif_discard_imageinfo(image_info_type * ImageInfo)3874 static int exif_discard_imageinfo(image_info_type *ImageInfo)
3875 {
3876 int i;
3877
3878 EFREE_IF(ImageInfo->FileName);
3879 EFREE_IF(ImageInfo->UserComment);
3880 EFREE_IF(ImageInfo->UserCommentEncoding);
3881 EFREE_IF(ImageInfo->Copyright);
3882 EFREE_IF(ImageInfo->CopyrightPhotographer);
3883 EFREE_IF(ImageInfo->CopyrightEditor);
3884 EFREE_IF(ImageInfo->Thumbnail.data);
3885 EFREE_IF(ImageInfo->encode_unicode);
3886 EFREE_IF(ImageInfo->decode_unicode_be);
3887 EFREE_IF(ImageInfo->decode_unicode_le);
3888 EFREE_IF(ImageInfo->encode_jis);
3889 EFREE_IF(ImageInfo->decode_jis_be);
3890 EFREE_IF(ImageInfo->decode_jis_le);
3891 EFREE_IF(ImageInfo->make);
3892 EFREE_IF(ImageInfo->model);
3893 for (i=0; i<ImageInfo->xp_fields.count; i++) {
3894 EFREE_IF(ImageInfo->xp_fields.list[i].value);
3895 }
3896 EFREE_IF(ImageInfo->xp_fields.list);
3897 for (i=0; i<SECTION_COUNT; i++) {
3898 exif_iif_free(ImageInfo, i);
3899 }
3900 exif_file_sections_free(ImageInfo);
3901 memset(ImageInfo, 0, sizeof(*ImageInfo));
3902 return TRUE;
3903 }
3904 /* }}} */
3905
3906 /* {{{ exif_read_file
3907 */
exif_read_file(image_info_type * ImageInfo,char * FileName,int read_thumbnail,int read_all TSRMLS_DC)3908 static int exif_read_file(image_info_type *ImageInfo, char *FileName, int read_thumbnail, int read_all TSRMLS_DC)
3909 {
3910 int ret;
3911 struct stat st;
3912
3913 /* Start with an empty image information structure. */
3914 memset(ImageInfo, 0, sizeof(*ImageInfo));
3915
3916 ImageInfo->motorola_intel = -1; /* flag as unknown */
3917
3918 ImageInfo->infile = php_stream_open_wrapper(FileName, "rb", STREAM_MUST_SEEK|IGNORE_PATH, NULL);
3919 if (!ImageInfo->infile) {
3920 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Unable to open file");
3921 return FALSE;
3922 }
3923
3924 if (php_stream_is(ImageInfo->infile, PHP_STREAM_IS_STDIO)) {
3925 if (VCWD_STAT(FileName, &st) >= 0) {
3926 if ((st.st_mode & S_IFMT) != S_IFREG) {
3927 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Not a file");
3928 php_stream_close(ImageInfo->infile);
3929 return FALSE;
3930 }
3931
3932 /* Store file date/time. */
3933 ImageInfo->FileDateTime = st.st_mtime;
3934 ImageInfo->FileSize = st.st_size;
3935 /*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Opened stream is file: %d", ImageInfo->FileSize);*/
3936 }
3937 } else {
3938 if (!ImageInfo->FileSize) {
3939 php_stream_seek(ImageInfo->infile, 0, SEEK_END);
3940 ImageInfo->FileSize = php_stream_tell(ImageInfo->infile);
3941 php_stream_seek(ImageInfo->infile, 0, SEEK_SET);
3942 }
3943 }
3944
3945 php_basename(FileName, strlen(FileName), NULL, 0, &(ImageInfo->FileName), NULL TSRMLS_CC);
3946 ImageInfo->read_thumbnail = read_thumbnail;
3947 ImageInfo->read_all = read_all;
3948 ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_UNKNOWN;
3949
3950 ImageInfo->encode_unicode = safe_estrdup(EXIF_G(encode_unicode));
3951 ImageInfo->decode_unicode_be = safe_estrdup(EXIF_G(decode_unicode_be));
3952 ImageInfo->decode_unicode_le = safe_estrdup(EXIF_G(decode_unicode_le));
3953 ImageInfo->encode_jis = safe_estrdup(EXIF_G(encode_jis));
3954 ImageInfo->decode_jis_be = safe_estrdup(EXIF_G(decode_jis_be));
3955 ImageInfo->decode_jis_le = safe_estrdup(EXIF_G(decode_jis_le));
3956
3957
3958 ImageInfo->ifd_nesting_level = 0;
3959
3960 /* Scan the JPEG headers. */
3961 ret = exif_scan_FILE_header(ImageInfo TSRMLS_CC);
3962
3963 php_stream_close(ImageInfo->infile);
3964 return ret;
3965 }
3966 /* }}} */
3967
3968 /* {{{ proto array exif_read_data(string filename [, sections_needed [, sub_arrays[, read_thumbnail]]])
3969 Reads header data from the JPEG/TIFF image filename and optionally reads the internal thumbnails */
PHP_FUNCTION(exif_read_data)3970 PHP_FUNCTION(exif_read_data)
3971 {
3972 char *p_name, *p_sections_needed = NULL;
3973 int p_name_len, p_sections_needed_len = 0;
3974 zend_bool sub_arrays=0, read_thumbnail=0, read_all=0;
3975
3976 int i, ret, sections_needed=0;
3977 image_info_type ImageInfo;
3978 char tmp[64], *sections_str, *s;
3979
3980 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "p|sbb", &p_name, &p_name_len, &p_sections_needed, &p_sections_needed_len, &sub_arrays, &read_thumbnail) == FAILURE) {
3981 return;
3982 }
3983
3984 memset(&ImageInfo, 0, sizeof(ImageInfo));
3985
3986 if (p_sections_needed) {
3987 spprintf(§ions_str, 0, ",%s,", p_sections_needed);
3988 /* sections_str DOES start with , and SPACES are NOT allowed in names */
3989 s = sections_str;
3990 while (*++s) {
3991 if (*s == ' ') {
3992 *s = ',';
3993 }
3994 }
3995
3996 for (i = 0; i < SECTION_COUNT; i++) {
3997 snprintf(tmp, sizeof(tmp), ",%s,", exif_get_sectionname(i));
3998 if (strstr(sections_str, tmp)) {
3999 sections_needed |= 1<<i;
4000 }
4001 }
4002 EFREE_IF(sections_str);
4003 /* now see what we need */
4004 #ifdef EXIF_DEBUG
4005 sections_str = exif_get_sectionlist(sections_needed TSRMLS_CC);
4006 if (!sections_str) {
4007 RETURN_FALSE;
4008 }
4009 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Sections needed: %s", sections_str[0] ? sections_str : "None");
4010 EFREE_IF(sections_str);
4011 #endif
4012 }
4013
4014 ret = exif_read_file(&ImageInfo, p_name, read_thumbnail, read_all TSRMLS_CC);
4015 sections_str = exif_get_sectionlist(ImageInfo.sections_found TSRMLS_CC);
4016
4017 #ifdef EXIF_DEBUG
4018 if (sections_str)
4019 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Sections found: %s", sections_str[0] ? sections_str : "None");
4020 #endif
4021
4022 ImageInfo.sections_found |= FOUND_COMPUTED|FOUND_FILE;/* do not inform about in debug*/
4023
4024 if (ret == FALSE || (sections_needed && !(sections_needed&ImageInfo.sections_found))) {
4025 /* array_init must be checked at last! otherwise the array must be freed if a later test fails. */
4026 exif_discard_imageinfo(&ImageInfo);
4027 EFREE_IF(sections_str);
4028 RETURN_FALSE;
4029 }
4030
4031 array_init(return_value);
4032
4033 #ifdef EXIF_DEBUG
4034 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Generate section FILE");
4035 #endif
4036
4037 /* now we can add our information */
4038 exif_iif_add_str(&ImageInfo, SECTION_FILE, "FileName", ImageInfo.FileName TSRMLS_CC);
4039 exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileDateTime", ImageInfo.FileDateTime TSRMLS_CC);
4040 exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileSize", ImageInfo.FileSize TSRMLS_CC);
4041 exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileType", ImageInfo.FileType TSRMLS_CC);
4042 exif_iif_add_str(&ImageInfo, SECTION_FILE, "MimeType", (char*)php_image_type_to_mime_type(ImageInfo.FileType) TSRMLS_CC);
4043 exif_iif_add_str(&ImageInfo, SECTION_FILE, "SectionsFound", sections_str ? sections_str : "NONE" TSRMLS_CC);
4044
4045 #ifdef EXIF_DEBUG
4046 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Generate section COMPUTED");
4047 #endif
4048
4049 if (ImageInfo.Width>0 && ImageInfo.Height>0) {
4050 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "html" TSRMLS_CC, "width=\"%d\" height=\"%d\"", ImageInfo.Width, ImageInfo.Height);
4051 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Height", ImageInfo.Height TSRMLS_CC);
4052 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Width", ImageInfo.Width TSRMLS_CC);
4053 }
4054 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "IsColor", ImageInfo.IsColor TSRMLS_CC);
4055 if (ImageInfo.motorola_intel != -1) {
4056 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "ByteOrderMotorola", ImageInfo.motorola_intel TSRMLS_CC);
4057 }
4058 if (ImageInfo.FocalLength) {
4059 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "FocalLength" TSRMLS_CC, "%4.1Fmm", ImageInfo.FocalLength);
4060 if(ImageInfo.CCDWidth) {
4061 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "35mmFocalLength" TSRMLS_CC, "%dmm", (int)(ImageInfo.FocalLength/ImageInfo.CCDWidth*35+0.5));
4062 }
4063 }
4064 if(ImageInfo.CCDWidth) {
4065 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "CCDWidth" TSRMLS_CC, "%dmm", (int)ImageInfo.CCDWidth);
4066 }
4067 if(ImageInfo.ExposureTime>0) {
4068 if(ImageInfo.ExposureTime <= 0.5) {
4069 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ExposureTime" TSRMLS_CC, "%0.3F s (1/%d)", ImageInfo.ExposureTime, (int)(0.5 + 1/ImageInfo.ExposureTime));
4070 } else {
4071 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ExposureTime" TSRMLS_CC, "%0.3F s", ImageInfo.ExposureTime);
4072 }
4073 }
4074 if(ImageInfo.ApertureFNumber) {
4075 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ApertureFNumber" TSRMLS_CC, "f/%.1F", ImageInfo.ApertureFNumber);
4076 }
4077 if(ImageInfo.Distance) {
4078 if(ImageInfo.Distance<0) {
4079 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "FocusDistance", "Infinite" TSRMLS_CC);
4080 } else {
4081 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "FocusDistance" TSRMLS_CC, "%0.2Fm", ImageInfo.Distance);
4082 }
4083 }
4084 if (ImageInfo.UserComment) {
4085 exif_iif_add_buffer(&ImageInfo, SECTION_COMPUTED, "UserComment", ImageInfo.UserCommentLength, ImageInfo.UserComment TSRMLS_CC);
4086 if (ImageInfo.UserCommentEncoding && strlen(ImageInfo.UserCommentEncoding)) {
4087 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "UserCommentEncoding", ImageInfo.UserCommentEncoding TSRMLS_CC);
4088 }
4089 }
4090
4091 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright", ImageInfo.Copyright TSRMLS_CC);
4092 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright.Photographer", ImageInfo.CopyrightPhotographer TSRMLS_CC);
4093 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright.Editor", ImageInfo.CopyrightEditor TSRMLS_CC);
4094
4095 for (i=0; i<ImageInfo.xp_fields.count; i++) {
4096 exif_iif_add_str(&ImageInfo, SECTION_WINXP, exif_get_tagname(ImageInfo.xp_fields.list[i].tag, NULL, 0, exif_get_tag_table(SECTION_WINXP) TSRMLS_CC), ImageInfo.xp_fields.list[i].value TSRMLS_CC);
4097 }
4098 if (ImageInfo.Thumbnail.size) {
4099 if (read_thumbnail) {
4100 /* not exif_iif_add_str : this is a buffer */
4101 exif_iif_add_tag(&ImageInfo, SECTION_THUMBNAIL, "THUMBNAIL", TAG_NONE, TAG_FMT_UNDEFINED, ImageInfo.Thumbnail.size, ImageInfo.Thumbnail.data TSRMLS_CC);
4102 }
4103 if (!ImageInfo.Thumbnail.width || !ImageInfo.Thumbnail.height) {
4104 /* try to evaluate if thumbnail data is present */
4105 exif_scan_thumbnail(&ImageInfo TSRMLS_CC);
4106 }
4107 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.FileType", ImageInfo.Thumbnail.filetype TSRMLS_CC);
4108 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Thumbnail.MimeType", (char*)php_image_type_to_mime_type(ImageInfo.Thumbnail.filetype) TSRMLS_CC);
4109 }
4110 if (ImageInfo.Thumbnail.width && ImageInfo.Thumbnail.height) {
4111 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.Height", ImageInfo.Thumbnail.height TSRMLS_CC);
4112 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.Width", ImageInfo.Thumbnail.width TSRMLS_CC);
4113 }
4114 EFREE_IF(sections_str);
4115
4116 #ifdef EXIF_DEBUG
4117 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Adding image infos");
4118 #endif
4119
4120 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_FILE TSRMLS_CC);
4121 add_assoc_image_info(return_value, 1, &ImageInfo, SECTION_COMPUTED TSRMLS_CC);
4122 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_ANY_TAG TSRMLS_CC);
4123 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_IFD0 TSRMLS_CC);
4124 add_assoc_image_info(return_value, 1, &ImageInfo, SECTION_THUMBNAIL TSRMLS_CC);
4125 add_assoc_image_info(return_value, 1, &ImageInfo, SECTION_COMMENT TSRMLS_CC);
4126 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_EXIF TSRMLS_CC);
4127 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_GPS TSRMLS_CC);
4128 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_INTEROP TSRMLS_CC);
4129 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_FPIX TSRMLS_CC);
4130 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_APP12 TSRMLS_CC);
4131 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_WINXP TSRMLS_CC);
4132 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_MAKERNOTE TSRMLS_CC);
4133
4134 #ifdef EXIF_DEBUG
4135 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Discarding info");
4136 #endif
4137
4138 exif_discard_imageinfo(&ImageInfo);
4139
4140 #ifdef EXIF_DEBUG
4141 php_error_docref1(NULL TSRMLS_CC, Z_STRVAL_PP(p_name), E_NOTICE, "done");
4142 #endif
4143 }
4144 /* }}} */
4145
4146 /* {{{ proto string exif_thumbnail(string filename [, &width, &height [, &imagetype]])
4147 Reads the embedded thumbnail */
PHP_FUNCTION(exif_thumbnail)4148 PHP_FUNCTION(exif_thumbnail)
4149 {
4150 zval *p_width = 0, *p_height = 0, *p_imagetype = 0;
4151 char *p_name;
4152 int p_name_len, ret, arg_c = ZEND_NUM_ARGS();
4153 image_info_type ImageInfo;
4154
4155 memset(&ImageInfo, 0, sizeof(ImageInfo));
4156
4157 if (arg_c!=1 && arg_c!=3 && arg_c!=4) {
4158 WRONG_PARAM_COUNT;
4159 }
4160
4161 if (zend_parse_parameters(arg_c TSRMLS_CC, "p|z/z/z/", &p_name, &p_name_len, &p_width, &p_height, &p_imagetype) == FAILURE) {
4162 return;
4163 }
4164
4165 ret = exif_read_file(&ImageInfo, p_name, 1, 0 TSRMLS_CC);
4166 if (ret==FALSE) {
4167 exif_discard_imageinfo(&ImageInfo);
4168 RETURN_FALSE;
4169 }
4170
4171 #ifdef EXIF_DEBUG
4172 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);
4173 #endif
4174 if (!ImageInfo.Thumbnail.data || !ImageInfo.Thumbnail.size) {
4175 exif_discard_imageinfo(&ImageInfo);
4176 RETURN_FALSE;
4177 }
4178
4179 #ifdef EXIF_DEBUG
4180 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Returning thumbnail(%d)", ImageInfo.Thumbnail.size);
4181 #endif
4182
4183 ZVAL_STRINGL(return_value, ImageInfo.Thumbnail.data, ImageInfo.Thumbnail.size, 1);
4184 if (arg_c >= 3) {
4185 if (!ImageInfo.Thumbnail.width || !ImageInfo.Thumbnail.height) {
4186 exif_scan_thumbnail(&ImageInfo TSRMLS_CC);
4187 }
4188 zval_dtor(p_width);
4189 zval_dtor(p_height);
4190 ZVAL_LONG(p_width, ImageInfo.Thumbnail.width);
4191 ZVAL_LONG(p_height, ImageInfo.Thumbnail.height);
4192 }
4193 if (arg_c >= 4) {
4194 zval_dtor(p_imagetype);
4195 ZVAL_LONG(p_imagetype, ImageInfo.Thumbnail.filetype);
4196 }
4197
4198 #ifdef EXIF_DEBUG
4199 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Discarding info");
4200 #endif
4201
4202 exif_discard_imageinfo(&ImageInfo);
4203
4204 #ifdef EXIF_DEBUG
4205 php_error_docref1(NULL TSRMLS_CC, p_name, E_NOTICE, "Done");
4206 #endif
4207 }
4208 /* }}} */
4209
4210 /* {{{ proto int exif_imagetype(string imagefile)
4211 Get the type of an image */
PHP_FUNCTION(exif_imagetype)4212 PHP_FUNCTION(exif_imagetype)
4213 {
4214 char *imagefile;
4215 int imagefile_len;
4216 php_stream * stream;
4217 int itype = 0;
4218
4219 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "p", &imagefile, &imagefile_len) == FAILURE) {
4220 return;
4221 }
4222
4223 stream = php_stream_open_wrapper(imagefile, "rb", IGNORE_PATH|REPORT_ERRORS, NULL);
4224
4225 if (stream == NULL) {
4226 RETURN_FALSE;
4227 }
4228
4229 itype = php_getimagetype(stream, NULL TSRMLS_CC);
4230
4231 php_stream_close(stream);
4232
4233 if (itype == IMAGE_FILETYPE_UNKNOWN) {
4234 RETURN_FALSE;
4235 } else {
4236 ZVAL_LONG(return_value, itype);
4237 }
4238 }
4239 /* }}} */
4240
4241 #endif
4242
4243 /*
4244 * Local variables:
4245 * tab-width: 4
4246 * c-basic-offset: 4
4247 * End:
4248 * vim600: sw=4 ts=4 tw=78 fdm=marker
4249 * vim<600: sw=4 ts=4 tw=78
4250 */
4251
