1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 5 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2014 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: 05041c5f0094cb46d9b516bd624d593b90cc38f9 $ */
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 #ifdef HAVE_STDINT_H
44 # include <stdint.h>
45 #endif
46 #ifdef HAVE_INTTYPES_H
47 # include <inttypes.h>
48 #endif
49 #ifdef PHP_WIN32
50 # include "win32/php_stdint.h"
51 #endif
52
53 #if HAVE_EXIF
54
55 /* When EXIF_DEBUG is defined the module generates a lot of debug messages
56 * that help understanding what is going on. This can and should be used
57 * while extending the module as it shows if you are at the right position.
58 * You are always considered to have a copy of TIFF6.0 and EXIF2.10 standard.
59 */
60 #undef EXIF_DEBUG
61
62 #ifdef EXIF_DEBUG
63 #define EXIFERR_DC , const char *_file, size_t _line TSRMLS_DC
64 #define EXIFERR_CC , __FILE__, __LINE__ TSRMLS_CC
65 #else
66 #define EXIFERR_DC TSRMLS_DC
67 #define EXIFERR_CC TSRMLS_CC
68 #endif
69
70 #undef EXIF_JPEG2000
71
72 #include "php_exif.h"
73 #include <math.h>
74 #include "php_ini.h"
75 #include "ext/standard/php_string.h"
76 #include "ext/standard/php_image.h"
77 #include "ext/standard/info.h"
78
79 /* needed for ssize_t definition */
80 #include <sys/types.h>
81
82 typedef unsigned char uchar;
83
84 #ifndef safe_emalloc
85 # define safe_emalloc(a,b,c) emalloc((a)*(b)+(c))
86 #endif
87 #ifndef safe_erealloc
88 # define safe_erealloc(p,a,b,c) erealloc(p, (a)*(b)+(c))
89 #endif
90
91 #ifndef TRUE
92 # define TRUE 1
93 # define FALSE 0
94 #endif
95
96 #ifndef max
97 # define max(a,b) ((a)>(b) ? (a) : (b))
98 #endif
99
100 #define EFREE_IF(ptr) if (ptr) efree(ptr)
101
102 #define MAX_IFD_NESTING_LEVEL 100
103
104 /* {{{ arginfo */
105 ZEND_BEGIN_ARG_INFO(arginfo_exif_tagname, 0)
106 ZEND_ARG_INFO(0, index)
107 ZEND_END_ARG_INFO()
108
109 ZEND_BEGIN_ARG_INFO_EX(arginfo_exif_read_data, 0, 0, 1)
110 ZEND_ARG_INFO(0, filename)
111 ZEND_ARG_INFO(0, sections_needed)
112 ZEND_ARG_INFO(0, sub_arrays)
113 ZEND_ARG_INFO(0, read_thumbnail)
114 ZEND_END_ARG_INFO()
115
116 ZEND_BEGIN_ARG_INFO_EX(arginfo_exif_thumbnail, 0, 0, 1)
117 ZEND_ARG_INFO(0, filename)
118 ZEND_ARG_INFO(1, width)
119 ZEND_ARG_INFO(1, height)
120 ZEND_ARG_INFO(1, imagetype)
121 ZEND_END_ARG_INFO()
122
123 ZEND_BEGIN_ARG_INFO(arginfo_exif_imagetype, 0)
124 ZEND_ARG_INFO(0, imagefile)
125 ZEND_END_ARG_INFO()
126
127 /* }}} */
128
129 /* {{{ exif_functions[]
130 */
131 const zend_function_entry exif_functions[] = {
132 PHP_FE(exif_read_data, arginfo_exif_read_data)
133 PHP_FALIAS(read_exif_data, exif_read_data, arginfo_exif_read_data)
134 PHP_FE(exif_tagname, arginfo_exif_tagname)
135 PHP_FE(exif_thumbnail, arginfo_exif_thumbnail)
136 PHP_FE(exif_imagetype, arginfo_exif_imagetype)
137 PHP_FE_END
138 };
139 /* }}} */
140
141 #define EXIF_VERSION "1.4 $Id: 05041c5f0094cb46d9b516bd624d593b90cc38f9 $"
142
143 /* {{{ PHP_MINFO_FUNCTION
144 */
PHP_MINFO_FUNCTION(exif)145 PHP_MINFO_FUNCTION(exif)
146 {
147 php_info_print_table_start();
148 php_info_print_table_row(2, "EXIF Support", "enabled");
149 php_info_print_table_row(2, "EXIF Version", EXIF_VERSION);
150 php_info_print_table_row(2, "Supported EXIF Version", "0220");
151 php_info_print_table_row(2, "Supported filetypes", "JPEG,TIFF");
152 php_info_print_table_end();
153 DISPLAY_INI_ENTRIES();
154 }
155 /* }}} */
156
157 ZEND_BEGIN_MODULE_GLOBALS(exif)
158 char * encode_unicode;
159 char * decode_unicode_be;
160 char * decode_unicode_le;
161 char * encode_jis;
162 char * decode_jis_be;
163 char * decode_jis_le;
164 ZEND_END_MODULE_GLOBALS(exif)
165
ZEND_DECLARE_MODULE_GLOBALS(exif)166 ZEND_DECLARE_MODULE_GLOBALS(exif)
167
168 #ifdef ZTS
169 #define EXIF_G(v) TSRMG(exif_globals_id, zend_exif_globals *, v)
170 #else
171 #define EXIF_G(v) (exif_globals.v)
172 #endif
173
174 /* {{{ PHP_INI
175 */
176
177 ZEND_INI_MH(OnUpdateEncode)
178 {
179 if (new_value && new_value_length) {
180 const zend_encoding **return_list;
181 size_t return_size;
182 if (FAILURE == zend_multibyte_parse_encoding_list(new_value, new_value_length,
183 &return_list, &return_size, 0 TSRMLS_CC)) {
184 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Illegal encoding ignored: '%s'", new_value);
185 return FAILURE;
186 }
187 efree(return_list);
188 }
189 return OnUpdateString(entry, new_value, new_value_length, mh_arg1, mh_arg2, mh_arg3, stage TSRMLS_CC);
190 }
191
ZEND_INI_MH(OnUpdateDecode)192 ZEND_INI_MH(OnUpdateDecode)
193 {
194 if (new_value) {
195 const zend_encoding **return_list;
196 size_t return_size;
197 if (FAILURE == zend_multibyte_parse_encoding_list(new_value, new_value_length,
198 &return_list, &return_size, 0 TSRMLS_CC)) {
199 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Illegal encoding ignored: '%s'", new_value);
200 return FAILURE;
201 }
202 efree(return_list);
203 }
204 return OnUpdateString(entry, new_value, new_value_length, mh_arg1, mh_arg2, mh_arg3, stage TSRMLS_CC);
205 }
206
207 PHP_INI_BEGIN()
208 STD_PHP_INI_ENTRY("exif.encode_unicode", "ISO-8859-15", PHP_INI_ALL, OnUpdateEncode, encode_unicode, zend_exif_globals, exif_globals)
209 STD_PHP_INI_ENTRY("exif.decode_unicode_motorola", "UCS-2BE", PHP_INI_ALL, OnUpdateDecode, decode_unicode_be, zend_exif_globals, exif_globals)
210 STD_PHP_INI_ENTRY("exif.decode_unicode_intel", "UCS-2LE", PHP_INI_ALL, OnUpdateDecode, decode_unicode_le, zend_exif_globals, exif_globals)
211 STD_PHP_INI_ENTRY("exif.encode_jis", "", PHP_INI_ALL, OnUpdateEncode, encode_jis, zend_exif_globals, exif_globals)
212 STD_PHP_INI_ENTRY("exif.decode_jis_motorola", "JIS", PHP_INI_ALL, OnUpdateDecode, decode_jis_be, zend_exif_globals, exif_globals)
213 STD_PHP_INI_ENTRY("exif.decode_jis_intel", "JIS", PHP_INI_ALL, OnUpdateDecode, decode_jis_le, zend_exif_globals, exif_globals)
PHP_INI_END()214 PHP_INI_END()
215 /* }}} */
216
217 /* {{{ PHP_GINIT_FUNCTION
218 */
219 static PHP_GINIT_FUNCTION(exif)
220 {
221 exif_globals->encode_unicode = NULL;
222 exif_globals->decode_unicode_be = NULL;
223 exif_globals->decode_unicode_le = NULL;
224 exif_globals->encode_jis = NULL;
225 exif_globals->decode_jis_be = NULL;
226 exif_globals->decode_jis_le = NULL;
227 }
228 /* }}} */
229
230 /* {{{ PHP_MINIT_FUNCTION(exif)
231 Get the size of an image as 4-element array */
PHP_MINIT_FUNCTION(exif)232 PHP_MINIT_FUNCTION(exif)
233 {
234 REGISTER_INI_ENTRIES();
235 if (zend_hash_exists(&module_registry, "mbstring", sizeof("mbstring"))) {
236 REGISTER_LONG_CONSTANT("EXIF_USE_MBSTRING", 1, CONST_CS | CONST_PERSISTENT);
237 } else {
238 REGISTER_LONG_CONSTANT("EXIF_USE_MBSTRING", 0, CONST_CS | CONST_PERSISTENT);
239 }
240 return SUCCESS;
241 }
242 /* }}} */
243
244 /* {{{ PHP_MSHUTDOWN_FUNCTION
245 */
PHP_MSHUTDOWN_FUNCTION(exif)246 PHP_MSHUTDOWN_FUNCTION(exif)
247 {
248 UNREGISTER_INI_ENTRIES();
249 return SUCCESS;
250 }
251 /* }}} */
252
253 /* {{{ exif dependencies */
254 static const zend_module_dep exif_module_deps[] = {
255 ZEND_MOD_REQUIRED("standard")
256 ZEND_MOD_OPTIONAL("mbstring")
257 ZEND_MOD_END
258 };
259 /* }}} */
260
261 /* {{{ exif_module_entry
262 */
263 zend_module_entry exif_module_entry = {
264 STANDARD_MODULE_HEADER_EX, NULL,
265 exif_module_deps,
266 "exif",
267 exif_functions,
268 PHP_MINIT(exif),
269 PHP_MSHUTDOWN(exif),
270 NULL, NULL,
271 PHP_MINFO(exif),
272 #if ZEND_MODULE_API_NO >= 20010901
273 EXIF_VERSION,
274 #endif
275 #if ZEND_MODULE_API_NO >= 20060613
276 PHP_MODULE_GLOBALS(exif),
277 PHP_GINIT(exif),
278 NULL,
279 NULL,
280 STANDARD_MODULE_PROPERTIES_EX
281 #else
282 STANDARD_MODULE_PROPERTIES
283 #endif
284 };
285 /* }}} */
286
287 #ifdef COMPILE_DL_EXIF
ZEND_GET_MODULE(exif)288 ZEND_GET_MODULE(exif)
289 #endif
290
291 /* {{{ php_strnlen
292 * get length of string if buffer if less than buffer size or buffer size */
293 static size_t php_strnlen(char* str, size_t maxlen) {
294 size_t len = 0;
295
296 if (str && maxlen && *str) {
297 do {
298 len++;
299 } while (--maxlen && *(++str));
300 }
301 return len;
302 }
303 /* }}} */
304
305 /* {{{ error messages
306 */
307 static const char * EXIF_ERROR_FILEEOF = "Unexpected end of file reached";
308 static const char * EXIF_ERROR_CORRUPT = "File structure corrupted";
309 static const char * EXIF_ERROR_THUMBEOF = "Thumbnail goes IFD boundary or end of file reached";
310 static const char * EXIF_ERROR_FSREALLOC = "Illegal reallocating of undefined file section";
311
312 #define EXIF_ERRLOG_FILEEOF(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_FILEEOF);
313 #define EXIF_ERRLOG_CORRUPT(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_CORRUPT);
314 #define EXIF_ERRLOG_THUMBEOF(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_THUMBEOF);
315 #define EXIF_ERRLOG_FSREALLOC(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_FSREALLOC);
316 /* }}} */
317
318 /* {{{ format description defines
319 Describes format descriptor
320 */
321 static int php_tiff_bytes_per_format[] = {0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8, 1};
322 #define NUM_FORMATS 13
323
324 #define TAG_FMT_BYTE 1
325 #define TAG_FMT_STRING 2
326 #define TAG_FMT_USHORT 3
327 #define TAG_FMT_ULONG 4
328 #define TAG_FMT_URATIONAL 5
329 #define TAG_FMT_SBYTE 6
330 #define TAG_FMT_UNDEFINED 7
331 #define TAG_FMT_SSHORT 8
332 #define TAG_FMT_SLONG 9
333 #define TAG_FMT_SRATIONAL 10
334 #define TAG_FMT_SINGLE 11
335 #define TAG_FMT_DOUBLE 12
336 #define TAG_FMT_IFD 13
337
338 #ifdef EXIF_DEBUG
exif_get_tagformat(int format)339 static char *exif_get_tagformat(int format)
340 {
341 switch(format) {
342 case TAG_FMT_BYTE: return "BYTE";
343 case TAG_FMT_STRING: return "STRING";
344 case TAG_FMT_USHORT: return "USHORT";
345 case TAG_FMT_ULONG: return "ULONG";
346 case TAG_FMT_URATIONAL: return "URATIONAL";
347 case TAG_FMT_SBYTE: return "SBYTE";
348 case TAG_FMT_UNDEFINED: return "UNDEFINED";
349 case TAG_FMT_SSHORT: return "SSHORT";
350 case TAG_FMT_SLONG: return "SLONG";
351 case TAG_FMT_SRATIONAL: return "SRATIONAL";
352 case TAG_FMT_SINGLE: return "SINGLE";
353 case TAG_FMT_DOUBLE: return "DOUBLE";
354 case TAG_FMT_IFD: return "IFD";
355 }
356 return "*Illegal";
357 }
358 #endif
359
360 /* Describes tag values */
361 #define TAG_GPS_VERSION_ID 0x0000
362 #define TAG_GPS_LATITUDE_REF 0x0001
363 #define TAG_GPS_LATITUDE 0x0002
364 #define TAG_GPS_LONGITUDE_REF 0x0003
365 #define TAG_GPS_LONGITUDE 0x0004
366 #define TAG_GPS_ALTITUDE_REF 0x0005
367 #define TAG_GPS_ALTITUDE 0x0006
368 #define TAG_GPS_TIME_STAMP 0x0007
369 #define TAG_GPS_SATELLITES 0x0008
370 #define TAG_GPS_STATUS 0x0009
371 #define TAG_GPS_MEASURE_MODE 0x000A
372 #define TAG_GPS_DOP 0x000B
373 #define TAG_GPS_SPEED_REF 0x000C
374 #define TAG_GPS_SPEED 0x000D
375 #define TAG_GPS_TRACK_REF 0x000E
376 #define TAG_GPS_TRACK 0x000F
377 #define TAG_GPS_IMG_DIRECTION_REF 0x0010
378 #define TAG_GPS_IMG_DIRECTION 0x0011
379 #define TAG_GPS_MAP_DATUM 0x0012
380 #define TAG_GPS_DEST_LATITUDE_REF 0x0013
381 #define TAG_GPS_DEST_LATITUDE 0x0014
382 #define TAG_GPS_DEST_LONGITUDE_REF 0x0015
383 #define TAG_GPS_DEST_LONGITUDE 0x0016
384 #define TAG_GPS_DEST_BEARING_REF 0x0017
385 #define TAG_GPS_DEST_BEARING 0x0018
386 #define TAG_GPS_DEST_DISTANCE_REF 0x0019
387 #define TAG_GPS_DEST_DISTANCE 0x001A
388 #define TAG_GPS_PROCESSING_METHOD 0x001B
389 #define TAG_GPS_AREA_INFORMATION 0x001C
390 #define TAG_GPS_DATE_STAMP 0x001D
391 #define TAG_GPS_DIFFERENTIAL 0x001E
392 #define TAG_TIFF_COMMENT 0x00FE /* SHOUDLNT HAPPEN */
393 #define TAG_NEW_SUBFILE 0x00FE /* New version of subfile tag */
394 #define TAG_SUBFILE_TYPE 0x00FF /* Old version of subfile tag */
395 #define TAG_IMAGEWIDTH 0x0100
396 #define TAG_IMAGEHEIGHT 0x0101
397 #define TAG_BITS_PER_SAMPLE 0x0102
398 #define TAG_COMPRESSION 0x0103
399 #define TAG_PHOTOMETRIC_INTERPRETATION 0x0106
400 #define TAG_TRESHHOLDING 0x0107
401 #define TAG_CELL_WIDTH 0x0108
402 #define TAG_CELL_HEIGHT 0x0109
403 #define TAG_FILL_ORDER 0x010A
404 #define TAG_DOCUMENT_NAME 0x010D
405 #define TAG_IMAGE_DESCRIPTION 0x010E
406 #define TAG_MAKE 0x010F
407 #define TAG_MODEL 0x0110
408 #define TAG_STRIP_OFFSETS 0x0111
409 #define TAG_ORIENTATION 0x0112
410 #define TAG_SAMPLES_PER_PIXEL 0x0115
411 #define TAG_ROWS_PER_STRIP 0x0116
412 #define TAG_STRIP_BYTE_COUNTS 0x0117
413 #define TAG_MIN_SAMPPLE_VALUE 0x0118
414 #define TAG_MAX_SAMPLE_VALUE 0x0119
415 #define TAG_X_RESOLUTION 0x011A
416 #define TAG_Y_RESOLUTION 0x011B
417 #define TAG_PLANAR_CONFIGURATION 0x011C
418 #define TAG_PAGE_NAME 0x011D
419 #define TAG_X_POSITION 0x011E
420 #define TAG_Y_POSITION 0x011F
421 #define TAG_FREE_OFFSETS 0x0120
422 #define TAG_FREE_BYTE_COUNTS 0x0121
423 #define TAG_GRAY_RESPONSE_UNIT 0x0122
424 #define TAG_GRAY_RESPONSE_CURVE 0x0123
425 #define TAG_RESOLUTION_UNIT 0x0128
426 #define TAG_PAGE_NUMBER 0x0129
427 #define TAG_TRANSFER_FUNCTION 0x012D
428 #define TAG_SOFTWARE 0x0131
429 #define TAG_DATETIME 0x0132
430 #define TAG_ARTIST 0x013B
431 #define TAG_HOST_COMPUTER 0x013C
432 #define TAG_PREDICTOR 0x013D
433 #define TAG_WHITE_POINT 0x013E
434 #define TAG_PRIMARY_CHROMATICITIES 0x013F
435 #define TAG_COLOR_MAP 0x0140
436 #define TAG_HALFTONE_HINTS 0x0141
437 #define TAG_TILE_WIDTH 0x0142
438 #define TAG_TILE_LENGTH 0x0143
439 #define TAG_TILE_OFFSETS 0x0144
440 #define TAG_TILE_BYTE_COUNTS 0x0145
441 #define TAG_SUB_IFD 0x014A
442 #define TAG_INK_SETMPUTER 0x014C
443 #define TAG_INK_NAMES 0x014D
444 #define TAG_NUMBER_OF_INKS 0x014E
445 #define TAG_DOT_RANGE 0x0150
446 #define TAG_TARGET_PRINTER 0x0151
447 #define TAG_EXTRA_SAMPLE 0x0152
448 #define TAG_SAMPLE_FORMAT 0x0153
449 #define TAG_S_MIN_SAMPLE_VALUE 0x0154
450 #define TAG_S_MAX_SAMPLE_VALUE 0x0155
451 #define TAG_TRANSFER_RANGE 0x0156
452 #define TAG_JPEG_TABLES 0x015B
453 #define TAG_JPEG_PROC 0x0200
454 #define TAG_JPEG_INTERCHANGE_FORMAT 0x0201
455 #define TAG_JPEG_INTERCHANGE_FORMAT_LEN 0x0202
456 #define TAG_JPEG_RESTART_INTERVAL 0x0203
457 #define TAG_JPEG_LOSSLESS_PREDICTOR 0x0205
458 #define TAG_JPEG_POINT_TRANSFORMS 0x0206
459 #define TAG_JPEG_Q_TABLES 0x0207
460 #define TAG_JPEG_DC_TABLES 0x0208
461 #define TAG_JPEG_AC_TABLES 0x0209
462 #define TAG_YCC_COEFFICIENTS 0x0211
463 #define TAG_YCC_SUB_SAMPLING 0x0212
464 #define TAG_YCC_POSITIONING 0x0213
465 #define TAG_REFERENCE_BLACK_WHITE 0x0214
466 /* 0x0301 - 0x0302 */
467 /* 0x0320 */
468 /* 0x0343 */
469 /* 0x5001 - 0x501B */
470 /* 0x5021 - 0x503B */
471 /* 0x5090 - 0x5091 */
472 /* 0x5100 - 0x5101 */
473 /* 0x5110 - 0x5113 */
474 /* 0x80E3 - 0x80E6 */
475 /* 0x828d - 0x828F */
476 #define TAG_COPYRIGHT 0x8298
477 #define TAG_EXPOSURETIME 0x829A
478 #define TAG_FNUMBER 0x829D
479 #define TAG_EXIF_IFD_POINTER 0x8769
480 #define TAG_ICC_PROFILE 0x8773
481 #define TAG_EXPOSURE_PROGRAM 0x8822
482 #define TAG_SPECTRAL_SENSITY 0x8824
483 #define TAG_GPS_IFD_POINTER 0x8825
484 #define TAG_ISOSPEED 0x8827
485 #define TAG_OPTOELECTRIC_CONVERSION_F 0x8828
486 /* 0x8829 - 0x882b */
487 #define TAG_EXIFVERSION 0x9000
488 #define TAG_DATE_TIME_ORIGINAL 0x9003
489 #define TAG_DATE_TIME_DIGITIZED 0x9004
490 #define TAG_COMPONENT_CONFIG 0x9101
491 #define TAG_COMPRESSED_BITS_PER_PIXEL 0x9102
492 #define TAG_SHUTTERSPEED 0x9201
493 #define TAG_APERTURE 0x9202
494 #define TAG_BRIGHTNESS_VALUE 0x9203
495 #define TAG_EXPOSURE_BIAS_VALUE 0x9204
496 #define TAG_MAX_APERTURE 0x9205
497 #define TAG_SUBJECT_DISTANCE 0x9206
498 #define TAG_METRIC_MODULE 0x9207
499 #define TAG_LIGHT_SOURCE 0x9208
500 #define TAG_FLASH 0x9209
501 #define TAG_FOCAL_LENGTH 0x920A
502 /* 0x920B - 0x920D */
503 /* 0x9211 - 0x9216 */
504 #define TAG_SUBJECT_AREA 0x9214
505 #define TAG_MAKER_NOTE 0x927C
506 #define TAG_USERCOMMENT 0x9286
507 #define TAG_SUB_SEC_TIME 0x9290
508 #define TAG_SUB_SEC_TIME_ORIGINAL 0x9291
509 #define TAG_SUB_SEC_TIME_DIGITIZED 0x9292
510 /* 0x923F */
511 /* 0x935C */
512 #define TAG_XP_TITLE 0x9C9B
513 #define TAG_XP_COMMENTS 0x9C9C
514 #define TAG_XP_AUTHOR 0x9C9D
515 #define TAG_XP_KEYWORDS 0x9C9E
516 #define TAG_XP_SUBJECT 0x9C9F
517 #define TAG_FLASH_PIX_VERSION 0xA000
518 #define TAG_COLOR_SPACE 0xA001
519 #define TAG_COMP_IMAGE_WIDTH 0xA002 /* compressed images only */
520 #define TAG_COMP_IMAGE_HEIGHT 0xA003
521 #define TAG_RELATED_SOUND_FILE 0xA004
522 #define TAG_INTEROP_IFD_POINTER 0xA005 /* IFD pointer */
523 #define TAG_FLASH_ENERGY 0xA20B
524 #define TAG_SPATIAL_FREQUENCY_RESPONSE 0xA20C
525 #define TAG_FOCALPLANE_X_RES 0xA20E
526 #define TAG_FOCALPLANE_Y_RES 0xA20F
527 #define TAG_FOCALPLANE_RESOLUTION_UNIT 0xA210
528 #define TAG_SUBJECT_LOCATION 0xA214
529 #define TAG_EXPOSURE_INDEX 0xA215
530 #define TAG_SENSING_METHOD 0xA217
531 #define TAG_FILE_SOURCE 0xA300
532 #define TAG_SCENE_TYPE 0xA301
533 #define TAG_CFA_PATTERN 0xA302
534 #define TAG_CUSTOM_RENDERED 0xA401
535 #define TAG_EXPOSURE_MODE 0xA402
536 #define TAG_WHITE_BALANCE 0xA403
537 #define TAG_DIGITAL_ZOOM_RATIO 0xA404
538 #define TAG_FOCAL_LENGTH_IN_35_MM_FILM 0xA405
539 #define TAG_SCENE_CAPTURE_TYPE 0xA406
540 #define TAG_GAIN_CONTROL 0xA407
541 #define TAG_CONTRAST 0xA408
542 #define TAG_SATURATION 0xA409
543 #define TAG_SHARPNESS 0xA40A
544 #define TAG_DEVICE_SETTING_DESCRIPTION 0xA40B
545 #define TAG_SUBJECT_DISTANCE_RANGE 0xA40C
546 #define TAG_IMAGE_UNIQUE_ID 0xA420
547
548 /* Olympus specific tags */
549 #define TAG_OLYMPUS_SPECIALMODE 0x0200
550 #define TAG_OLYMPUS_JPEGQUAL 0x0201
551 #define TAG_OLYMPUS_MACRO 0x0202
552 #define TAG_OLYMPUS_DIGIZOOM 0x0204
553 #define TAG_OLYMPUS_SOFTWARERELEASE 0x0207
554 #define TAG_OLYMPUS_PICTINFO 0x0208
555 #define TAG_OLYMPUS_CAMERAID 0x0209
556 /* end Olympus specific tags */
557
558 /* Internal */
559 #define TAG_NONE -1 /* note that -1 <> 0xFFFF */
560 #define TAG_COMPUTED_VALUE -2
561 #define TAG_END_OF_LIST 0xFFFD
562
563 /* Values for TAG_PHOTOMETRIC_INTERPRETATION */
564 #define PMI_BLACK_IS_ZERO 0
565 #define PMI_WHITE_IS_ZERO 1
566 #define PMI_RGB 2
567 #define PMI_PALETTE_COLOR 3
568 #define PMI_TRANSPARENCY_MASK 4
569 #define PMI_SEPARATED 5
570 #define PMI_YCBCR 6
571 #define PMI_CIELAB 8
572
573 /* }}} */
574
575 /* {{{ TabTable[]
576 */
577 typedef const struct {
578 unsigned short Tag;
579 char *Desc;
580 } tag_info_type;
581
582 typedef tag_info_type tag_info_array[];
583 typedef tag_info_type *tag_table_type;
584
585 #define TAG_TABLE_END \
586 {TAG_NONE, "No tag value"},\
587 {TAG_COMPUTED_VALUE, "Computed value"},\
588 {TAG_END_OF_LIST, ""} /* Important for exif_get_tagname() IF value != "" function result is != false */
589
590 static tag_info_array tag_table_IFD = {
591 { 0x000B, "ACDComment"},
592 { 0x00FE, "NewSubFile"}, /* better name it 'ImageType' ? */
593 { 0x00FF, "SubFile"},
594 { 0x0100, "ImageWidth"},
595 { 0x0101, "ImageLength"},
596 { 0x0102, "BitsPerSample"},
597 { 0x0103, "Compression"},
598 { 0x0106, "PhotometricInterpretation"},
599 { 0x010A, "FillOrder"},
600 { 0x010D, "DocumentName"},
601 { 0x010E, "ImageDescription"},
602 { 0x010F, "Make"},
603 { 0x0110, "Model"},
604 { 0x0111, "StripOffsets"},
605 { 0x0112, "Orientation"},
606 { 0x0115, "SamplesPerPixel"},
607 { 0x0116, "RowsPerStrip"},
608 { 0x0117, "StripByteCounts"},
609 { 0x0118, "MinSampleValue"},
610 { 0x0119, "MaxSampleValue"},
611 { 0x011A, "XResolution"},
612 { 0x011B, "YResolution"},
613 { 0x011C, "PlanarConfiguration"},
614 { 0x011D, "PageName"},
615 { 0x011E, "XPosition"},
616 { 0x011F, "YPosition"},
617 { 0x0120, "FreeOffsets"},
618 { 0x0121, "FreeByteCounts"},
619 { 0x0122, "GrayResponseUnit"},
620 { 0x0123, "GrayResponseCurve"},
621 { 0x0124, "T4Options"},
622 { 0x0125, "T6Options"},
623 { 0x0128, "ResolutionUnit"},
624 { 0x0129, "PageNumber"},
625 { 0x012D, "TransferFunction"},
626 { 0x0131, "Software"},
627 { 0x0132, "DateTime"},
628 { 0x013B, "Artist"},
629 { 0x013C, "HostComputer"},
630 { 0x013D, "Predictor"},
631 { 0x013E, "WhitePoint"},
632 { 0x013F, "PrimaryChromaticities"},
633 { 0x0140, "ColorMap"},
634 { 0x0141, "HalfToneHints"},
635 { 0x0142, "TileWidth"},
636 { 0x0143, "TileLength"},
637 { 0x0144, "TileOffsets"},
638 { 0x0145, "TileByteCounts"},
639 { 0x014A, "SubIFD"},
640 { 0x014C, "InkSet"},
641 { 0x014D, "InkNames"},
642 { 0x014E, "NumberOfInks"},
643 { 0x0150, "DotRange"},
644 { 0x0151, "TargetPrinter"},
645 { 0x0152, "ExtraSample"},
646 { 0x0153, "SampleFormat"},
647 { 0x0154, "SMinSampleValue"},
648 { 0x0155, "SMaxSampleValue"},
649 { 0x0156, "TransferRange"},
650 { 0x0157, "ClipPath"},
651 { 0x0158, "XClipPathUnits"},
652 { 0x0159, "YClipPathUnits"},
653 { 0x015A, "Indexed"},
654 { 0x015B, "JPEGTables"},
655 { 0x015F, "OPIProxy"},
656 { 0x0200, "JPEGProc"},
657 { 0x0201, "JPEGInterchangeFormat"},
658 { 0x0202, "JPEGInterchangeFormatLength"},
659 { 0x0203, "JPEGRestartInterval"},
660 { 0x0205, "JPEGLosslessPredictors"},
661 { 0x0206, "JPEGPointTransforms"},
662 { 0x0207, "JPEGQTables"},
663 { 0x0208, "JPEGDCTables"},
664 { 0x0209, "JPEGACTables"},
665 { 0x0211, "YCbCrCoefficients"},
666 { 0x0212, "YCbCrSubSampling"},
667 { 0x0213, "YCbCrPositioning"},
668 { 0x0214, "ReferenceBlackWhite"},
669 { 0x02BC, "ExtensibleMetadataPlatform"}, /* XAP: Extensible Authoring Publishing, obsoleted by XMP: Extensible Metadata Platform */
670 { 0x0301, "Gamma"},
671 { 0x0302, "ICCProfileDescriptor"},
672 { 0x0303, "SRGBRenderingIntent"},
673 { 0x0320, "ImageTitle"},
674 { 0x5001, "ResolutionXUnit"},
675 { 0x5002, "ResolutionYUnit"},
676 { 0x5003, "ResolutionXLengthUnit"},
677 { 0x5004, "ResolutionYLengthUnit"},
678 { 0x5005, "PrintFlags"},
679 { 0x5006, "PrintFlagsVersion"},
680 { 0x5007, "PrintFlagsCrop"},
681 { 0x5008, "PrintFlagsBleedWidth"},
682 { 0x5009, "PrintFlagsBleedWidthScale"},
683 { 0x500A, "HalftoneLPI"},
684 { 0x500B, "HalftoneLPIUnit"},
685 { 0x500C, "HalftoneDegree"},
686 { 0x500D, "HalftoneShape"},
687 { 0x500E, "HalftoneMisc"},
688 { 0x500F, "HalftoneScreen"},
689 { 0x5010, "JPEGQuality"},
690 { 0x5011, "GridSize"},
691 { 0x5012, "ThumbnailFormat"},
692 { 0x5013, "ThumbnailWidth"},
693 { 0x5014, "ThumbnailHeight"},
694 { 0x5015, "ThumbnailColorDepth"},
695 { 0x5016, "ThumbnailPlanes"},
696 { 0x5017, "ThumbnailRawBytes"},
697 { 0x5018, "ThumbnailSize"},
698 { 0x5019, "ThumbnailCompressedSize"},
699 { 0x501A, "ColorTransferFunction"},
700 { 0x501B, "ThumbnailData"},
701 { 0x5020, "ThumbnailImageWidth"},
702 { 0x5021, "ThumbnailImageHeight"},
703 { 0x5022, "ThumbnailBitsPerSample"},
704 { 0x5023, "ThumbnailCompression"},
705 { 0x5024, "ThumbnailPhotometricInterp"},
706 { 0x5025, "ThumbnailImageDescription"},
707 { 0x5026, "ThumbnailEquipMake"},
708 { 0x5027, "ThumbnailEquipModel"},
709 { 0x5028, "ThumbnailStripOffsets"},
710 { 0x5029, "ThumbnailOrientation"},
711 { 0x502A, "ThumbnailSamplesPerPixel"},
712 { 0x502B, "ThumbnailRowsPerStrip"},
713 { 0x502C, "ThumbnailStripBytesCount"},
714 { 0x502D, "ThumbnailResolutionX"},
715 { 0x502E, "ThumbnailResolutionY"},
716 { 0x502F, "ThumbnailPlanarConfig"},
717 { 0x5030, "ThumbnailResolutionUnit"},
718 { 0x5031, "ThumbnailTransferFunction"},
719 { 0x5032, "ThumbnailSoftwareUsed"},
720 { 0x5033, "ThumbnailDateTime"},
721 { 0x5034, "ThumbnailArtist"},
722 { 0x5035, "ThumbnailWhitePoint"},
723 { 0x5036, "ThumbnailPrimaryChromaticities"},
724 { 0x5037, "ThumbnailYCbCrCoefficients"},
725 { 0x5038, "ThumbnailYCbCrSubsampling"},
726 { 0x5039, "ThumbnailYCbCrPositioning"},
727 { 0x503A, "ThumbnailRefBlackWhite"},
728 { 0x503B, "ThumbnailCopyRight"},
729 { 0x5090, "LuminanceTable"},
730 { 0x5091, "ChrominanceTable"},
731 { 0x5100, "FrameDelay"},
732 { 0x5101, "LoopCount"},
733 { 0x5110, "PixelUnit"},
734 { 0x5111, "PixelPerUnitX"},
735 { 0x5112, "PixelPerUnitY"},
736 { 0x5113, "PaletteHistogram"},
737 { 0x1000, "RelatedImageFileFormat"},
738 { 0x800D, "ImageID"},
739 { 0x80E3, "Matteing"}, /* obsoleted by ExtraSamples */
740 { 0x80E4, "DataType"}, /* obsoleted by SampleFormat */
741 { 0x80E5, "ImageDepth"},
742 { 0x80E6, "TileDepth"},
743 { 0x828D, "CFARepeatPatternDim"},
744 { 0x828E, "CFAPattern"},
745 { 0x828F, "BatteryLevel"},
746 { 0x8298, "Copyright"},
747 { 0x829A, "ExposureTime"},
748 { 0x829D, "FNumber"},
749 { 0x83BB, "IPTC/NAA"},
750 { 0x84E3, "IT8RasterPadding"},
751 { 0x84E5, "IT8ColorTable"},
752 { 0x8649, "ImageResourceInformation"}, /* PhotoShop */
753 { 0x8769, "Exif_IFD_Pointer"},
754 { 0x8773, "ICC_Profile"},
755 { 0x8822, "ExposureProgram"},
756 { 0x8824, "SpectralSensity"},
757 { 0x8828, "OECF"},
758 { 0x8825, "GPS_IFD_Pointer"},
759 { 0x8827, "ISOSpeedRatings"},
760 { 0x8828, "OECF"},
761 { 0x9000, "ExifVersion"},
762 { 0x9003, "DateTimeOriginal"},
763 { 0x9004, "DateTimeDigitized"},
764 { 0x9101, "ComponentsConfiguration"},
765 { 0x9102, "CompressedBitsPerPixel"},
766 { 0x9201, "ShutterSpeedValue"},
767 { 0x9202, "ApertureValue"},
768 { 0x9203, "BrightnessValue"},
769 { 0x9204, "ExposureBiasValue"},
770 { 0x9205, "MaxApertureValue"},
771 { 0x9206, "SubjectDistance"},
772 { 0x9207, "MeteringMode"},
773 { 0x9208, "LightSource"},
774 { 0x9209, "Flash"},
775 { 0x920A, "FocalLength"},
776 { 0x920B, "FlashEnergy"}, /* 0xA20B in JPEG */
777 { 0x920C, "SpatialFrequencyResponse"}, /* 0xA20C - - */
778 { 0x920D, "Noise"},
779 { 0x920E, "FocalPlaneXResolution"}, /* 0xA20E - - */
780 { 0x920F, "FocalPlaneYResolution"}, /* 0xA20F - - */
781 { 0x9210, "FocalPlaneResolutionUnit"}, /* 0xA210 - - */
782 { 0x9211, "ImageNumber"},
783 { 0x9212, "SecurityClassification"},
784 { 0x9213, "ImageHistory"},
785 { 0x9214, "SubjectLocation"}, /* 0xA214 - - */
786 { 0x9215, "ExposureIndex"}, /* 0xA215 - - */
787 { 0x9216, "TIFF/EPStandardID"},
788 { 0x9217, "SensingMethod"}, /* 0xA217 - - */
789 { 0x923F, "StoNits"},
790 { 0x927C, "MakerNote"},
791 { 0x9286, "UserComment"},
792 { 0x9290, "SubSecTime"},
793 { 0x9291, "SubSecTimeOriginal"},
794 { 0x9292, "SubSecTimeDigitized"},
795 { 0x935C, "ImageSourceData"}, /* "Adobe Photoshop Document Data Block": 8BIM... */
796 { 0x9c9b, "Title" }, /* Win XP specific, Unicode */
797 { 0x9c9c, "Comments" }, /* Win XP specific, Unicode */
798 { 0x9c9d, "Author" }, /* Win XP specific, Unicode */
799 { 0x9c9e, "Keywords" }, /* Win XP specific, Unicode */
800 { 0x9c9f, "Subject" }, /* Win XP specific, Unicode, not to be confused with SubjectDistance and SubjectLocation */
801 { 0xA000, "FlashPixVersion"},
802 { 0xA001, "ColorSpace"},
803 { 0xA002, "ExifImageWidth"},
804 { 0xA003, "ExifImageLength"},
805 { 0xA004, "RelatedSoundFile"},
806 { 0xA005, "InteroperabilityOffset"},
807 { 0xA20B, "FlashEnergy"}, /* 0x920B in TIFF/EP */
808 { 0xA20C, "SpatialFrequencyResponse"}, /* 0x920C - - */
809 { 0xA20D, "Noise"},
810 { 0xA20E, "FocalPlaneXResolution"}, /* 0x920E - - */
811 { 0xA20F, "FocalPlaneYResolution"}, /* 0x920F - - */
812 { 0xA210, "FocalPlaneResolutionUnit"}, /* 0x9210 - - */
813 { 0xA211, "ImageNumber"},
814 { 0xA212, "SecurityClassification"},
815 { 0xA213, "ImageHistory"},
816 { 0xA214, "SubjectLocation"}, /* 0x9214 - - */
817 { 0xA215, "ExposureIndex"}, /* 0x9215 - - */
818 { 0xA216, "TIFF/EPStandardID"},
819 { 0xA217, "SensingMethod"}, /* 0x9217 - - */
820 { 0xA300, "FileSource"},
821 { 0xA301, "SceneType"},
822 { 0xA302, "CFAPattern"},
823 { 0xA401, "CustomRendered"},
824 { 0xA402, "ExposureMode"},
825 { 0xA403, "WhiteBalance"},
826 { 0xA404, "DigitalZoomRatio"},
827 { 0xA405, "FocalLengthIn35mmFilm"},
828 { 0xA406, "SceneCaptureType"},
829 { 0xA407, "GainControl"},
830 { 0xA408, "Contrast"},
831 { 0xA409, "Saturation"},
832 { 0xA40A, "Sharpness"},
833 { 0xA40B, "DeviceSettingDescription"},
834 { 0xA40C, "SubjectDistanceRange"},
835 { 0xA420, "ImageUniqueID"},
836 TAG_TABLE_END
837 } ;
838
839 static tag_info_array tag_table_GPS = {
840 { 0x0000, "GPSVersion"},
841 { 0x0001, "GPSLatitudeRef"},
842 { 0x0002, "GPSLatitude"},
843 { 0x0003, "GPSLongitudeRef"},
844 { 0x0004, "GPSLongitude"},
845 { 0x0005, "GPSAltitudeRef"},
846 { 0x0006, "GPSAltitude"},
847 { 0x0007, "GPSTimeStamp"},
848 { 0x0008, "GPSSatellites"},
849 { 0x0009, "GPSStatus"},
850 { 0x000A, "GPSMeasureMode"},
851 { 0x000B, "GPSDOP"},
852 { 0x000C, "GPSSpeedRef"},
853 { 0x000D, "GPSSpeed"},
854 { 0x000E, "GPSTrackRef"},
855 { 0x000F, "GPSTrack"},
856 { 0x0010, "GPSImgDirectionRef"},
857 { 0x0011, "GPSImgDirection"},
858 { 0x0012, "GPSMapDatum"},
859 { 0x0013, "GPSDestLatitudeRef"},
860 { 0x0014, "GPSDestLatitude"},
861 { 0x0015, "GPSDestLongitudeRef"},
862 { 0x0016, "GPSDestLongitude"},
863 { 0x0017, "GPSDestBearingRef"},
864 { 0x0018, "GPSDestBearing"},
865 { 0x0019, "GPSDestDistanceRef"},
866 { 0x001A, "GPSDestDistance"},
867 { 0x001B, "GPSProcessingMode"},
868 { 0x001C, "GPSAreaInformation"},
869 { 0x001D, "GPSDateStamp"},
870 { 0x001E, "GPSDifferential"},
871 TAG_TABLE_END
872 };
873
874 static tag_info_array tag_table_IOP = {
875 { 0x0001, "InterOperabilityIndex"}, /* should be 'R98' or 'THM' */
876 { 0x0002, "InterOperabilityVersion"},
877 { 0x1000, "RelatedFileFormat"},
878 { 0x1001, "RelatedImageWidth"},
879 { 0x1002, "RelatedImageHeight"},
880 TAG_TABLE_END
881 };
882
883 static tag_info_array tag_table_VND_CANON = {
884 { 0x0001, "ModeArray"}, /* guess */
885 { 0x0004, "ImageInfo"}, /* guess */
886 { 0x0006, "ImageType"},
887 { 0x0007, "FirmwareVersion"},
888 { 0x0008, "ImageNumber"},
889 { 0x0009, "OwnerName"},
890 { 0x000C, "Camera"},
891 { 0x000F, "CustomFunctions"},
892 TAG_TABLE_END
893 };
894
895 static tag_info_array tag_table_VND_CASIO = {
896 { 0x0001, "RecordingMode"},
897 { 0x0002, "Quality"},
898 { 0x0003, "FocusingMode"},
899 { 0x0004, "FlashMode"},
900 { 0x0005, "FlashIntensity"},
901 { 0x0006, "ObjectDistance"},
902 { 0x0007, "WhiteBalance"},
903 { 0x000A, "DigitalZoom"},
904 { 0x000B, "Sharpness"},
905 { 0x000C, "Contrast"},
906 { 0x000D, "Saturation"},
907 { 0x0014, "CCDSensitivity"},
908 TAG_TABLE_END
909 };
910
911 static tag_info_array tag_table_VND_FUJI = {
912 { 0x0000, "Version"},
913 { 0x1000, "Quality"},
914 { 0x1001, "Sharpness"},
915 { 0x1002, "WhiteBalance"},
916 { 0x1003, "Color"},
917 { 0x1004, "Tone"},
918 { 0x1010, "FlashMode"},
919 { 0x1011, "FlashStrength"},
920 { 0x1020, "Macro"},
921 { 0x1021, "FocusMode"},
922 { 0x1030, "SlowSync"},
923 { 0x1031, "PictureMode"},
924 { 0x1100, "ContTake"},
925 { 0x1300, "BlurWarning"},
926 { 0x1301, "FocusWarning"},
927 { 0x1302, "AEWarning "},
928 TAG_TABLE_END
929 };
930
931 static tag_info_array tag_table_VND_NIKON = {
932 { 0x0003, "Quality"},
933 { 0x0004, "ColorMode"},
934 { 0x0005, "ImageAdjustment"},
935 { 0x0006, "CCDSensitivity"},
936 { 0x0007, "WhiteBalance"},
937 { 0x0008, "Focus"},
938 { 0x000a, "DigitalZoom"},
939 { 0x000b, "Converter"},
940 TAG_TABLE_END
941 };
942
943 static tag_info_array tag_table_VND_NIKON_990 = {
944 { 0x0001, "Version"},
945 { 0x0002, "ISOSetting"},
946 { 0x0003, "ColorMode"},
947 { 0x0004, "Quality"},
948 { 0x0005, "WhiteBalance"},
949 { 0x0006, "ImageSharpening"},
950 { 0x0007, "FocusMode"},
951 { 0x0008, "FlashSetting"},
952 { 0x000F, "ISOSelection"},
953 { 0x0080, "ImageAdjustment"},
954 { 0x0082, "AuxiliaryLens"},
955 { 0x0085, "ManualFocusDistance"},
956 { 0x0086, "DigitalZoom"},
957 { 0x0088, "AFFocusPosition"},
958 { 0x0010, "DataDump"},
959 TAG_TABLE_END
960 };
961
962 static tag_info_array tag_table_VND_OLYMPUS = {
963 { 0x0200, "SpecialMode"},
964 { 0x0201, "JPEGQuality"},
965 { 0x0202, "Macro"},
966 { 0x0204, "DigitalZoom"},
967 { 0x0207, "SoftwareRelease"},
968 { 0x0208, "PictureInfo"},
969 { 0x0209, "CameraId"},
970 { 0x0F00, "DataDump"},
971 TAG_TABLE_END
972 };
973
974 typedef enum mn_byte_order_t {
975 MN_ORDER_INTEL = 0,
976 MN_ORDER_MOTOROLA = 1,
977 MN_ORDER_NORMAL
978 } mn_byte_order_t;
979
980 typedef enum mn_offset_mode_t {
981 MN_OFFSET_NORMAL,
982 MN_OFFSET_MAKER,
983 MN_OFFSET_GUESS
984 } mn_offset_mode_t;
985
986 typedef struct {
987 tag_table_type tag_table;
988 char * make;
989 char * model;
990 char * id_string;
991 int id_string_len;
992 int offset;
993 mn_byte_order_t byte_order;
994 mn_offset_mode_t offset_mode;
995 } maker_note_type;
996
997 static const maker_note_type maker_note_array[] = {
998 { tag_table_VND_CANON, "Canon", NULL, NULL, 0, 0, MN_ORDER_INTEL, MN_OFFSET_GUESS},
999 /* { tag_table_VND_CANON, "Canon", NULL, NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},*/
1000 { tag_table_VND_CASIO, "CASIO", NULL, NULL, 0, 0, MN_ORDER_MOTOROLA, MN_OFFSET_NORMAL},
1001 { tag_table_VND_FUJI, "FUJIFILM", NULL, "FUJIFILM\x0C\x00\x00\x00", 12, 12, MN_ORDER_INTEL, MN_OFFSET_MAKER},
1002 { tag_table_VND_NIKON, "NIKON", NULL, "Nikon\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
1003 { tag_table_VND_NIKON_990, "NIKON", NULL, NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
1004 { tag_table_VND_OLYMPUS, "OLYMPUS OPTICAL CO.,LTD", NULL, "OLYMP\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
1005 };
1006 /* }}} */
1007
1008 /* {{{ exif_get_tagname
1009 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)1010 static char * exif_get_tagname(int tag_num, char *ret, int len, tag_table_type tag_table TSRMLS_DC)
1011 {
1012 int i, t;
1013 char tmp[32];
1014
1015 for (i = 0; (t = tag_table[i].Tag) != TAG_END_OF_LIST; i++) {
1016 if (t == tag_num) {
1017 if (ret && len) {
1018 strlcpy(ret, tag_table[i].Desc, abs(len));
1019 if (len < 0) {
1020 memset(ret + strlen(ret), ' ', -len - strlen(ret) - 1);
1021 ret[-len - 1] = '\0';
1022 }
1023 return ret;
1024 }
1025 return tag_table[i].Desc;
1026 }
1027 }
1028
1029 if (ret && len) {
1030 snprintf(tmp, sizeof(tmp), "UndefinedTag:0x%04X", tag_num);
1031 strlcpy(ret, tmp, abs(len));
1032 if (len < 0) {
1033 memset(ret + strlen(ret), ' ', -len - strlen(ret) - 1);
1034 ret[-len - 1] = '\0';
1035 }
1036 return ret;
1037 }
1038 return "";
1039 }
1040 /* }}} */
1041
1042 /* {{{ exif_char_dump
1043 * Do not use! This is a debug function... */
1044 #ifdef EXIF_DEBUG
exif_char_dump(unsigned char * addr,int len,int offset)1045 static unsigned char* exif_char_dump(unsigned char * addr, int len, int offset)
1046 {
1047 static unsigned char buf[4096+1];
1048 static unsigned char tmp[20];
1049 int c, i, p=0, n = 5+31;
1050
1051 p += slprintf(buf+p, sizeof(buf)-p, "\nDump Len: %08X (%d)", len, len);
1052 if (len) {
1053 for(i=0; i<len+15 && p+n<=sizeof(buf); i++) {
1054 if (i%16==0) {
1055 p += slprintf(buf+p, sizeof(buf)-p, "\n%08X: ", i+offset);
1056 }
1057 if (i<len) {
1058 c = *addr++;
1059 p += slprintf(buf+p, sizeof(buf)-p, "%02X ", c);
1060 tmp[i%16] = c>=32 ? c : '.';
1061 tmp[(i%16)+1] = '\0';
1062 } else {
1063 p += slprintf(buf+p, sizeof(buf)-p, " ");
1064 }
1065 if (i%16==15) {
1066 p += slprintf(buf+p, sizeof(buf)-p, " %s", tmp);
1067 if (i>=len) {
1068 break;
1069 }
1070 }
1071 }
1072 }
1073 buf[sizeof(buf)-1] = '\0';
1074 return buf;
1075 }
1076 #endif
1077 /* }}} */
1078
1079 /* {{{ php_jpg_get16
1080 Get 16 bits motorola order (always) for jpeg header stuff.
1081 */
php_jpg_get16(void * value)1082 static int php_jpg_get16(void *value)
1083 {
1084 return (((uchar *)value)[0] << 8) | ((uchar *)value)[1];
1085 }
1086 /* }}} */
1087
1088 /* {{{ php_ifd_get16u
1089 * Convert a 16 bit unsigned value from file's native byte order */
php_ifd_get16u(void * value,int motorola_intel)1090 static int php_ifd_get16u(void *value, int motorola_intel)
1091 {
1092 if (motorola_intel) {
1093 return (((uchar *)value)[0] << 8) | ((uchar *)value)[1];
1094 } else {
1095 return (((uchar *)value)[1] << 8) | ((uchar *)value)[0];
1096 }
1097 }
1098 /* }}} */
1099
1100 /* {{{ php_ifd_get16s
1101 * Convert a 16 bit signed value from file's native byte order */
php_ifd_get16s(void * value,int motorola_intel)1102 static signed short php_ifd_get16s(void *value, int motorola_intel)
1103 {
1104 return (signed short)php_ifd_get16u(value, motorola_intel);
1105 }
1106 /* }}} */
1107
1108 /* {{{ php_ifd_get32s
1109 * Convert a 32 bit signed value from file's native byte order */
php_ifd_get32s(void * value,int motorola_intel)1110 static int php_ifd_get32s(void *value, int motorola_intel)
1111 {
1112 if (motorola_intel) {
1113 return (((char *)value)[0] << 24)
1114 | (((uchar *)value)[1] << 16)
1115 | (((uchar *)value)[2] << 8 )
1116 | (((uchar *)value)[3] );
1117 } else {
1118 return (((char *)value)[3] << 24)
1119 | (((uchar *)value)[2] << 16)
1120 | (((uchar *)value)[1] << 8 )
1121 | (((uchar *)value)[0] );
1122 }
1123 }
1124 /* }}} */
1125
1126 /* {{{ php_ifd_get32u
1127 * Write 32 bit unsigned value to data */
php_ifd_get32u(void * value,int motorola_intel)1128 static unsigned php_ifd_get32u(void *value, int motorola_intel)
1129 {
1130 return (unsigned)php_ifd_get32s(value, motorola_intel) & 0xffffffff;
1131 }
1132 /* }}} */
1133
1134 /* {{{ php_ifd_set16u
1135 * Write 16 bit unsigned value to data */
php_ifd_set16u(char * data,unsigned int value,int motorola_intel)1136 static void php_ifd_set16u(char *data, unsigned int value, int motorola_intel)
1137 {
1138 if (motorola_intel) {
1139 data[0] = (value & 0xFF00) >> 8;
1140 data[1] = (value & 0x00FF);
1141 } else {
1142 data[1] = (value & 0xFF00) >> 8;
1143 data[0] = (value & 0x00FF);
1144 }
1145 }
1146 /* }}} */
1147
1148 /* {{{ php_ifd_set32u
1149 * Convert a 32 bit unsigned value from file's native byte order */
php_ifd_set32u(char * data,size_t value,int motorola_intel)1150 static void php_ifd_set32u(char *data, size_t value, int motorola_intel)
1151 {
1152 if (motorola_intel) {
1153 data[0] = (value & 0xFF000000) >> 24;
1154 data[1] = (value & 0x00FF0000) >> 16;
1155 data[2] = (value & 0x0000FF00) >> 8;
1156 data[3] = (value & 0x000000FF);
1157 } else {
1158 data[3] = (value & 0xFF000000) >> 24;
1159 data[2] = (value & 0x00FF0000) >> 16;
1160 data[1] = (value & 0x0000FF00) >> 8;
1161 data[0] = (value & 0x000000FF);
1162 }
1163 }
1164 /* }}} */
1165
1166 #ifdef EXIF_DEBUG
exif_dump_data(int * dump_free,int format,int components,int length,int motorola_intel,char * value_ptr TSRMLS_DC)1167 char * exif_dump_data(int *dump_free, int format, int components, int length, int motorola_intel, char *value_ptr TSRMLS_DC) /* {{{ */
1168 {
1169 char *dump;
1170 int len;
1171
1172 *dump_free = 0;
1173 if (format == TAG_FMT_STRING) {
1174 return value_ptr ? value_ptr : "<no data>";
1175 }
1176 if (format == TAG_FMT_UNDEFINED) {
1177 return "<undefined>\n";
1178 }
1179 if (format == TAG_FMT_IFD) {
1180 return "";
1181 }
1182 if (format == TAG_FMT_SINGLE || format == TAG_FMT_DOUBLE) {
1183 return "<not implemented>";
1184 }
1185 *dump_free = 1;
1186 if (components > 1) {
1187 len = spprintf(&dump, 0, "(%d,%d) {", components, length);
1188 } else {
1189 len = spprintf(&dump, 0, "{");
1190 }
1191 while(components > 0) {
1192 switch(format) {
1193 case TAG_FMT_BYTE:
1194 case TAG_FMT_UNDEFINED:
1195 case TAG_FMT_STRING:
1196 case TAG_FMT_SBYTE:
1197 dump = erealloc(dump, len + 4 + 1);
1198 snprintf(dump + len, 4 + 1, "0x%02X", *value_ptr);
1199 len += 4;
1200 value_ptr++;
1201 break;
1202 case TAG_FMT_USHORT:
1203 case TAG_FMT_SSHORT:
1204 dump = erealloc(dump, len + 6 + 1);
1205 snprintf(dump + len, 6 + 1, "0x%04X", php_ifd_get16s(value_ptr, motorola_intel));
1206 len += 6;
1207 value_ptr += 2;
1208 break;
1209 case TAG_FMT_ULONG:
1210 case TAG_FMT_SLONG:
1211 dump = erealloc(dump, len + 6 + 1);
1212 snprintf(dump + len, 6 + 1, "0x%04X", php_ifd_get32s(value_ptr, motorola_intel));
1213 len += 6;
1214 value_ptr += 4;
1215 break;
1216 case TAG_FMT_URATIONAL:
1217 case TAG_FMT_SRATIONAL:
1218 dump = erealloc(dump, len + 13 + 1);
1219 snprintf(dump + len, 13 + 1, "0x%04X/0x%04X", php_ifd_get32s(value_ptr, motorola_intel), php_ifd_get32s(value_ptr+4, motorola_intel));
1220 len += 13;
1221 value_ptr += 8;
1222 break;
1223 }
1224 if (components > 0) {
1225 dump = erealloc(dump, len + 2 + 1);
1226 snprintf(dump + len, 2 + 1, ", ");
1227 len += 2;
1228 components--;
1229 } else{
1230 break;
1231 }
1232 }
1233 dump = erealloc(dump, len + 1 + 1);
1234 snprintf(dump + len, 1 + 1, "}");
1235 return dump;
1236 }
1237 /* }}} */
1238 #endif
1239
1240 /* {{{ exif_convert_any_format
1241 * Evaluate number, be it int, rational, or float from directory. */
exif_convert_any_format(void * value,int format,int motorola_intel TSRMLS_DC)1242 static double exif_convert_any_format(void *value, int format, int motorola_intel TSRMLS_DC)
1243 {
1244 int s_den;
1245 unsigned u_den;
1246
1247 switch(format) {
1248 case TAG_FMT_SBYTE: return *(signed char *)value;
1249 case TAG_FMT_BYTE: return *(uchar *)value;
1250
1251 case TAG_FMT_USHORT: return php_ifd_get16u(value, motorola_intel);
1252 case TAG_FMT_ULONG: return php_ifd_get32u(value, motorola_intel);
1253
1254 case TAG_FMT_URATIONAL:
1255 u_den = php_ifd_get32u(4+(char *)value, motorola_intel);
1256 if (u_den == 0) {
1257 return 0;
1258 } else {
1259 return (double)php_ifd_get32u(value, motorola_intel) / u_den;
1260 }
1261
1262 case TAG_FMT_SRATIONAL:
1263 s_den = php_ifd_get32s(4+(char *)value, motorola_intel);
1264 if (s_den == 0) {
1265 return 0;
1266 } else {
1267 return (double)php_ifd_get32s(value, motorola_intel) / s_den;
1268 }
1269
1270 case TAG_FMT_SSHORT: return (signed short)php_ifd_get16u(value, motorola_intel);
1271 case TAG_FMT_SLONG: return php_ifd_get32s(value, motorola_intel);
1272
1273 /* Not sure if this is correct (never seen float used in Exif format) */
1274 case TAG_FMT_SINGLE:
1275 #ifdef EXIF_DEBUG
1276 php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Found value of type single");
1277 #endif
1278 return (double)*(float *)value;
1279 case TAG_FMT_DOUBLE:
1280 #ifdef EXIF_DEBUG
1281 php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Found value of type double");
1282 #endif
1283 return *(double *)value;
1284 }
1285 return 0;
1286 }
1287 /* }}} */
1288
1289 /* {{{ exif_convert_any_to_int
1290 * Evaluate number, be it int, rational, or float from directory. */
exif_convert_any_to_int(void * value,int format,int motorola_intel TSRMLS_DC)1291 static size_t exif_convert_any_to_int(void *value, int format, int motorola_intel TSRMLS_DC)
1292 {
1293 int s_den;
1294 unsigned u_den;
1295
1296 switch(format) {
1297 case TAG_FMT_SBYTE: return *(signed char *)value;
1298 case TAG_FMT_BYTE: return *(uchar *)value;
1299
1300 case TAG_FMT_USHORT: return php_ifd_get16u(value, motorola_intel);
1301 case TAG_FMT_ULONG: return php_ifd_get32u(value, motorola_intel);
1302
1303 case TAG_FMT_URATIONAL:
1304 u_den = php_ifd_get32u(4+(char *)value, motorola_intel);
1305 if (u_den == 0) {
1306 return 0;
1307 } else {
1308 return php_ifd_get32u(value, motorola_intel) / u_den;
1309 }
1310
1311 case TAG_FMT_SRATIONAL:
1312 s_den = php_ifd_get32s(4+(char *)value, motorola_intel);
1313 if (s_den == 0) {
1314 return 0;
1315 } else {
1316 return php_ifd_get32s(value, motorola_intel) / s_den;
1317 }
1318
1319 case TAG_FMT_SSHORT: return php_ifd_get16u(value, motorola_intel);
1320 case TAG_FMT_SLONG: return php_ifd_get32s(value, motorola_intel);
1321
1322 /* Not sure if this is correct (never seen float used in Exif format) */
1323 case TAG_FMT_SINGLE:
1324 #ifdef EXIF_DEBUG
1325 php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Found value of type single");
1326 #endif
1327 return (size_t)*(float *)value;
1328 case TAG_FMT_DOUBLE:
1329 #ifdef EXIF_DEBUG
1330 php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Found value of type double");
1331 #endif
1332 return (size_t)*(double *)value;
1333 }
1334 return 0;
1335 }
1336 /* }}} */
1337
1338 /* {{{ struct image_info_value, image_info_list
1339 */
1340 #ifndef WORD
1341 #define WORD unsigned short
1342 #endif
1343 #ifndef DWORD
1344 #define DWORD unsigned int
1345 #endif
1346
1347 typedef struct {
1348 int num;
1349 int den;
1350 } signed_rational;
1351
1352 typedef struct {
1353 unsigned int num;
1354 unsigned int den;
1355 } unsigned_rational;
1356
1357 typedef union _image_info_value {
1358 char *s;
1359 unsigned u;
1360 int i;
1361 float f;
1362 double d;
1363 signed_rational sr;
1364 unsigned_rational ur;
1365 union _image_info_value *list;
1366 } image_info_value;
1367
1368 typedef struct {
1369 WORD tag;
1370 WORD format;
1371 DWORD length;
1372 DWORD dummy; /* value ptr of tiff directory entry */
1373 char *name;
1374 image_info_value value;
1375 } image_info_data;
1376
1377 typedef struct {
1378 int count;
1379 image_info_data *list;
1380 } image_info_list;
1381 /* }}} */
1382
1383 /* {{{ exif_get_sectionname
1384 Returns the name of a section
1385 */
1386 #define SECTION_FILE 0
1387 #define SECTION_COMPUTED 1
1388 #define SECTION_ANY_TAG 2
1389 #define SECTION_IFD0 3
1390 #define SECTION_THUMBNAIL 4
1391 #define SECTION_COMMENT 5
1392 #define SECTION_APP0 6
1393 #define SECTION_EXIF 7
1394 #define SECTION_FPIX 8
1395 #define SECTION_GPS 9
1396 #define SECTION_INTEROP 10
1397 #define SECTION_APP12 11
1398 #define SECTION_WINXP 12
1399 #define SECTION_MAKERNOTE 13
1400 #define SECTION_COUNT 14
1401
1402 #define FOUND_FILE (1<<SECTION_FILE)
1403 #define FOUND_COMPUTED (1<<SECTION_COMPUTED)
1404 #define FOUND_ANY_TAG (1<<SECTION_ANY_TAG)
1405 #define FOUND_IFD0 (1<<SECTION_IFD0)
1406 #define FOUND_THUMBNAIL (1<<SECTION_THUMBNAIL)
1407 #define FOUND_COMMENT (1<<SECTION_COMMENT)
1408 #define FOUND_APP0 (1<<SECTION_APP0)
1409 #define FOUND_EXIF (1<<SECTION_EXIF)
1410 #define FOUND_FPIX (1<<SECTION_FPIX)
1411 #define FOUND_GPS (1<<SECTION_GPS)
1412 #define FOUND_INTEROP (1<<SECTION_INTEROP)
1413 #define FOUND_APP12 (1<<SECTION_APP12)
1414 #define FOUND_WINXP (1<<SECTION_WINXP)
1415 #define FOUND_MAKERNOTE (1<<SECTION_MAKERNOTE)
1416
exif_get_sectionname(int section)1417 static char *exif_get_sectionname(int section)
1418 {
1419 switch(section) {
1420 case SECTION_FILE: return "FILE";
1421 case SECTION_COMPUTED: return "COMPUTED";
1422 case SECTION_ANY_TAG: return "ANY_TAG";
1423 case SECTION_IFD0: return "IFD0";
1424 case SECTION_THUMBNAIL: return "THUMBNAIL";
1425 case SECTION_COMMENT: return "COMMENT";
1426 case SECTION_APP0: return "APP0";
1427 case SECTION_EXIF: return "EXIF";
1428 case SECTION_FPIX: return "FPIX";
1429 case SECTION_GPS: return "GPS";
1430 case SECTION_INTEROP: return "INTEROP";
1431 case SECTION_APP12: return "APP12";
1432 case SECTION_WINXP: return "WINXP";
1433 case SECTION_MAKERNOTE: return "MAKERNOTE";
1434 }
1435 return "";
1436 }
1437
exif_get_tag_table(int section)1438 static tag_table_type exif_get_tag_table(int section)
1439 {
1440 switch(section) {
1441 case SECTION_FILE: return &tag_table_IFD[0];
1442 case SECTION_COMPUTED: return &tag_table_IFD[0];
1443 case SECTION_ANY_TAG: return &tag_table_IFD[0];
1444 case SECTION_IFD0: return &tag_table_IFD[0];
1445 case SECTION_THUMBNAIL: return &tag_table_IFD[0];
1446 case SECTION_COMMENT: return &tag_table_IFD[0];
1447 case SECTION_APP0: return &tag_table_IFD[0];
1448 case SECTION_EXIF: return &tag_table_IFD[0];
1449 case SECTION_FPIX: return &tag_table_IFD[0];
1450 case SECTION_GPS: return &tag_table_GPS[0];
1451 case SECTION_INTEROP: return &tag_table_IOP[0];
1452 case SECTION_APP12: return &tag_table_IFD[0];
1453 case SECTION_WINXP: return &tag_table_IFD[0];
1454 }
1455 return &tag_table_IFD[0];
1456 }
1457 /* }}} */
1458
1459 /* {{{ exif_get_sectionlist
1460 Return list of sectionnames specified by sectionlist. Return value must be freed
1461 */
exif_get_sectionlist(int sectionlist TSRMLS_DC)1462 static char *exif_get_sectionlist(int sectionlist TSRMLS_DC)
1463 {
1464 int i, len, ml = 0;
1465 char *sections;
1466
1467 for(i=0; i<SECTION_COUNT; i++) {
1468 ml += strlen(exif_get_sectionname(i))+2;
1469 }
1470 sections = safe_emalloc(ml, 1, 1);
1471 sections[0] = '\0';
1472 len = 0;
1473 for(i=0; i<SECTION_COUNT; i++) {
1474 if (sectionlist&(1<<i)) {
1475 snprintf(sections+len, ml-len, "%s, ", exif_get_sectionname(i));
1476 len = strlen(sections);
1477 }
1478 }
1479 if (len>2)
1480 sections[len-2] = '\0';
1481 return sections;
1482 }
1483 /* }}} */
1484
1485 /* {{{ struct image_info_type
1486 This structure stores Exif header image elements in a simple manner
1487 Used to store camera data as extracted from the various ways that it can be
1488 stored in a nexif header
1489 */
1490
1491 typedef struct {
1492 int type;
1493 size_t size;
1494 uchar *data;
1495 } file_section;
1496
1497 typedef struct {
1498 int count;
1499 file_section *list;
1500 } file_section_list;
1501
1502 typedef struct {
1503 image_filetype filetype;
1504 size_t width, height;
1505 size_t size;
1506 size_t offset;
1507 char *data;
1508 } thumbnail_data;
1509
1510 typedef struct {
1511 char *value;
1512 size_t size;
1513 int tag;
1514 } xp_field_type;
1515
1516 typedef struct {
1517 int count;
1518 xp_field_type *list;
1519 } xp_field_list;
1520
1521 /* This structure is used to store a section of a Jpeg file. */
1522 typedef struct {
1523 php_stream *infile;
1524 char *FileName;
1525 time_t FileDateTime;
1526 size_t FileSize;
1527 image_filetype FileType;
1528 int Height, Width;
1529 int IsColor;
1530
1531 char *make;
1532 char *model;
1533
1534 float ApertureFNumber;
1535 float ExposureTime;
1536 double FocalplaneUnits;
1537 float CCDWidth;
1538 double FocalplaneXRes;
1539 size_t ExifImageWidth;
1540 float FocalLength;
1541 float Distance;
1542
1543 int motorola_intel; /* 1 Motorola; 0 Intel */
1544
1545 char *UserComment;
1546 int UserCommentLength;
1547 char *UserCommentEncoding;
1548 char *encode_unicode;
1549 char *decode_unicode_be;
1550 char *decode_unicode_le;
1551 char *encode_jis;
1552 char *decode_jis_be;
1553 char *decode_jis_le;
1554 char *Copyright;/* EXIF standard defines Copyright as "<Photographer> [ '\0' <Editor> ] ['\0']" */
1555 char *CopyrightPhotographer;
1556 char *CopyrightEditor;
1557
1558 xp_field_list xp_fields;
1559
1560 thumbnail_data Thumbnail;
1561 /* other */
1562 int sections_found; /* FOUND_<marker> */
1563 image_info_list info_list[SECTION_COUNT];
1564 /* for parsing */
1565 int read_thumbnail;
1566 int read_all;
1567 int ifd_nesting_level;
1568 /* internal */
1569 file_section_list file;
1570 } image_info_type;
1571 /* }}} */
1572
1573 /* {{{ exif_error_docref */
exif_error_docref(const char * docref EXIFERR_DC,const image_info_type * ImageInfo,int type,const char * format,...)1574 static void exif_error_docref(const char *docref EXIFERR_DC, const image_info_type *ImageInfo, int type, const char *format, ...)
1575 {
1576 va_list args;
1577
1578 va_start(args, format);
1579 #ifdef EXIF_DEBUG
1580 {
1581 char *buf;
1582
1583 spprintf(&buf, 0, "%s(%d): %s", _file, _line, format);
1584 php_verror(docref, ImageInfo->FileName?ImageInfo->FileName:"", type, buf, args TSRMLS_CC);
1585 efree(buf);
1586 }
1587 #else
1588 php_verror(docref, ImageInfo->FileName?ImageInfo->FileName:"", type, format, args TSRMLS_CC);
1589 #endif
1590 va_end(args);
1591 }
1592 /* }}} */
1593
1594 /* {{{ jpeg_sof_info
1595 */
1596 typedef struct {
1597 int bits_per_sample;
1598 size_t width;
1599 size_t height;
1600 int num_components;
1601 } jpeg_sof_info;
1602 /* }}} */
1603
1604 /* {{{ exif_file_sections_add
1605 Add a file_section to image_info
1606 returns the used block or -1. if size>0 and data == NULL buffer of size is allocated
1607 */
exif_file_sections_add(image_info_type * ImageInfo,int type,size_t size,uchar * data)1608 static int exif_file_sections_add(image_info_type *ImageInfo, int type, size_t size, uchar *data)
1609 {
1610 file_section *tmp;
1611 int count = ImageInfo->file.count;
1612
1613 tmp = safe_erealloc(ImageInfo->file.list, (count+1), sizeof(file_section), 0);
1614 ImageInfo->file.list = tmp;
1615 ImageInfo->file.list[count].type = 0xFFFF;
1616 ImageInfo->file.list[count].data = NULL;
1617 ImageInfo->file.list[count].size = 0;
1618 ImageInfo->file.count = count+1;
1619 if (!size) {
1620 data = NULL;
1621 } else if (data == NULL) {
1622 data = safe_emalloc(size, 1, 0);
1623 }
1624 ImageInfo->file.list[count].type = type;
1625 ImageInfo->file.list[count].data = data;
1626 ImageInfo->file.list[count].size = size;
1627 return count;
1628 }
1629 /* }}} */
1630
1631 /* {{{ exif_file_sections_realloc
1632 Reallocate a file section returns 0 on success and -1 on failure
1633 */
exif_file_sections_realloc(image_info_type * ImageInfo,int section_index,size_t size TSRMLS_DC)1634 static int exif_file_sections_realloc(image_info_type *ImageInfo, int section_index, size_t size TSRMLS_DC)
1635 {
1636 void *tmp;
1637
1638 /* This is not a malloc/realloc check. It is a plausibility check for the
1639 * function parameters (requirements engineering).
1640 */
1641 if (section_index >= ImageInfo->file.count) {
1642 EXIF_ERRLOG_FSREALLOC(ImageInfo)
1643 return -1;
1644 }
1645 tmp = safe_erealloc(ImageInfo->file.list[section_index].data, 1, size, 0);
1646 ImageInfo->file.list[section_index].data = tmp;
1647 ImageInfo->file.list[section_index].size = size;
1648 return 0;
1649 }
1650 /* }}} */
1651
1652 /* {{{ exif_file_section_free
1653 Discard all file_sections in ImageInfo
1654 */
exif_file_sections_free(image_info_type * ImageInfo)1655 static int exif_file_sections_free(image_info_type *ImageInfo)
1656 {
1657 int i;
1658
1659 if (ImageInfo->file.count) {
1660 for (i=0; i<ImageInfo->file.count; i++) {
1661 EFREE_IF(ImageInfo->file.list[i].data);
1662 }
1663 }
1664 EFREE_IF(ImageInfo->file.list);
1665 ImageInfo->file.count = 0;
1666 return TRUE;
1667 }
1668 /* }}} */
1669
1670 /* {{{ exif_iif_add_value
1671 Add a value to image_info
1672 */
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)1673 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)
1674 {
1675 size_t idex;
1676 void *vptr;
1677 image_info_value *info_value;
1678 image_info_data *info_data;
1679 image_info_data *list;
1680
1681 if (length < 0) {
1682 return;
1683 }
1684
1685 list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
1686 image_info->info_list[section_index].list = list;
1687
1688 info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
1689 memset(info_data, 0, sizeof(image_info_data));
1690 info_data->tag = tag;
1691 info_data->format = format;
1692 info_data->length = length;
1693 info_data->name = estrdup(name);
1694 info_value = &info_data->value;
1695
1696 switch (format) {
1697 case TAG_FMT_STRING:
1698 if (value) {
1699 length = php_strnlen(value, length);
1700 info_value->s = estrndup(value, length);
1701 info_data->length = length;
1702 } else {
1703 info_data->length = 0;
1704 info_value->s = estrdup("");
1705 }
1706 break;
1707
1708 default:
1709 /* Standard says more types possible but skip them...
1710 * but allow users to handle data if they know how to
1711 * So not return but use type UNDEFINED
1712 * return;
1713 */
1714 info_data->tag = TAG_FMT_UNDEFINED;/* otherwise not freed from memory */
1715 case TAG_FMT_SBYTE:
1716 case TAG_FMT_BYTE:
1717 /* in contrast to strings bytes do not need to allocate buffer for NULL if length==0 */
1718 if (!length)
1719 break;
1720 case TAG_FMT_UNDEFINED:
1721 if (value) {
1722 /* do not recompute length here */
1723 info_value->s = estrndup(value, length);
1724 info_data->length = length;
1725 } else {
1726 info_data->length = 0;
1727 info_value->s = estrdup("");
1728 }
1729 break;
1730
1731 case TAG_FMT_USHORT:
1732 case TAG_FMT_ULONG:
1733 case TAG_FMT_URATIONAL:
1734 case TAG_FMT_SSHORT:
1735 case TAG_FMT_SLONG:
1736 case TAG_FMT_SRATIONAL:
1737 case TAG_FMT_SINGLE:
1738 case TAG_FMT_DOUBLE:
1739 if (length==0) {
1740 break;
1741 } else
1742 if (length>1) {
1743 info_value->list = safe_emalloc(length, sizeof(image_info_value), 0);
1744 } else {
1745 info_value = &info_data->value;
1746 }
1747 for (idex=0,vptr=value; idex<(size_t)length; idex++,vptr=(char *) vptr + php_tiff_bytes_per_format[format]) {
1748 if (length>1) {
1749 info_value = &info_data->value.list[idex];
1750 }
1751 switch (format) {
1752 case TAG_FMT_USHORT:
1753 info_value->u = php_ifd_get16u(vptr, motorola_intel);
1754 break;
1755
1756 case TAG_FMT_ULONG:
1757 info_value->u = php_ifd_get32u(vptr, motorola_intel);
1758 break;
1759
1760 case TAG_FMT_URATIONAL:
1761 info_value->ur.num = php_ifd_get32u(vptr, motorola_intel);
1762 info_value->ur.den = php_ifd_get32u(4+(char *)vptr, motorola_intel);
1763 break;
1764
1765 case TAG_FMT_SSHORT:
1766 info_value->i = php_ifd_get16s(vptr, motorola_intel);
1767 break;
1768
1769 case TAG_FMT_SLONG:
1770 info_value->i = php_ifd_get32s(vptr, motorola_intel);
1771 break;
1772
1773 case TAG_FMT_SRATIONAL:
1774 info_value->sr.num = php_ifd_get32u(vptr, motorola_intel);
1775 info_value->sr.den = php_ifd_get32u(4+(char *)vptr, motorola_intel);
1776 break;
1777
1778 case TAG_FMT_SINGLE:
1779 #ifdef EXIF_DEBUG
1780 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Found value of type single");
1781 #endif
1782 info_value->f = *(float *)value;
1783
1784 case TAG_FMT_DOUBLE:
1785 #ifdef EXIF_DEBUG
1786 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Found value of type double");
1787 #endif
1788 info_value->d = *(double *)value;
1789 break;
1790 }
1791 }
1792 }
1793 image_info->sections_found |= 1<<section_index;
1794 image_info->info_list[section_index].count++;
1795 }
1796 /* }}} */
1797
1798 /* {{{ exif_iif_add_tag
1799 Add a tag from IFD to image_info
1800 */
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)1801 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)
1802 {
1803 exif_iif_add_value(image_info, section_index, name, tag, format, (int)length, value, image_info->motorola_intel TSRMLS_CC);
1804 }
1805 /* }}} */
1806
1807 /* {{{ exif_iif_add_int
1808 Add an int value to image_info
1809 */
exif_iif_add_int(image_info_type * image_info,int section_index,char * name,int value TSRMLS_DC)1810 static void exif_iif_add_int(image_info_type *image_info, int section_index, char *name, int value TSRMLS_DC)
1811 {
1812 image_info_data *info_data;
1813 image_info_data *list;
1814
1815 list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
1816 image_info->info_list[section_index].list = list;
1817
1818 info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
1819 info_data->tag = TAG_NONE;
1820 info_data->format = TAG_FMT_SLONG;
1821 info_data->length = 1;
1822 info_data->name = estrdup(name);
1823 info_data->value.i = value;
1824 image_info->sections_found |= 1<<section_index;
1825 image_info->info_list[section_index].count++;
1826 }
1827 /* }}} */
1828
1829 /* {{{ exif_iif_add_str
1830 Add a string value to image_info MUST BE NUL TERMINATED
1831 */
exif_iif_add_str(image_info_type * image_info,int section_index,char * name,char * value TSRMLS_DC)1832 static void exif_iif_add_str(image_info_type *image_info, int section_index, char *name, char *value TSRMLS_DC)
1833 {
1834 image_info_data *info_data;
1835 image_info_data *list;
1836
1837 if (value) {
1838 list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
1839 image_info->info_list[section_index].list = list;
1840 info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
1841 info_data->tag = TAG_NONE;
1842 info_data->format = TAG_FMT_STRING;
1843 info_data->length = 1;
1844 info_data->name = estrdup(name);
1845 info_data->value.s = estrdup(value);
1846 image_info->sections_found |= 1<<section_index;
1847 image_info->info_list[section_index].count++;
1848 }
1849 }
1850 /* }}} */
1851
1852 /* {{{ exif_iif_add_fmt
1853 Add a format string value to image_info MUST BE NUL TERMINATED
1854 */
exif_iif_add_fmt(image_info_type * image_info,int section_index,char * name TSRMLS_DC,char * value,...)1855 static void exif_iif_add_fmt(image_info_type *image_info, int section_index, char *name TSRMLS_DC, char *value, ...)
1856 {
1857 char *tmp;
1858 va_list arglist;
1859
1860 va_start(arglist, value);
1861 if (value) {
1862 vspprintf(&tmp, 0, value, arglist);
1863 exif_iif_add_str(image_info, section_index, name, tmp TSRMLS_CC);
1864 efree(tmp);
1865 }
1866 va_end(arglist);
1867 }
1868 /* }}} */
1869
1870 /* {{{ exif_iif_add_str
1871 Add a string value to image_info MUST BE NUL TERMINATED
1872 */
exif_iif_add_buffer(image_info_type * image_info,int section_index,char * name,int length,char * value TSRMLS_DC)1873 static void exif_iif_add_buffer(image_info_type *image_info, int section_index, char *name, int length, char *value TSRMLS_DC)
1874 {
1875 image_info_data *info_data;
1876 image_info_data *list;
1877
1878 if (value) {
1879 list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
1880 image_info->info_list[section_index].list = list;
1881 info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
1882 info_data->tag = TAG_NONE;
1883 info_data->format = TAG_FMT_UNDEFINED;
1884 info_data->length = length;
1885 info_data->name = estrdup(name);
1886 info_data->value.s = safe_emalloc(length, 1, 1);
1887 memcpy(info_data->value.s, value, length);
1888 info_data->value.s[length] = 0;
1889 image_info->sections_found |= 1<<section_index;
1890 image_info->info_list[section_index].count++;
1891 }
1892 }
1893 /* }}} */
1894
1895 /* {{{ exif_iif_free
1896 Free memory allocated for image_info
1897 */
exif_iif_free(image_info_type * image_info,int section_index)1898 static void exif_iif_free(image_info_type *image_info, int section_index) {
1899 int i;
1900 void *f; /* faster */
1901
1902 if (image_info->info_list[section_index].count) {
1903 for (i=0; i < image_info->info_list[section_index].count; i++) {
1904 if ((f=image_info->info_list[section_index].list[i].name) != NULL) {
1905 efree(f);
1906 }
1907 switch(image_info->info_list[section_index].list[i].format) {
1908 case TAG_FMT_SBYTE:
1909 case TAG_FMT_BYTE:
1910 /* in contrast to strings bytes do not need to allocate buffer for NULL if length==0 */
1911 if (image_info->info_list[section_index].list[i].length<1)
1912 break;
1913 default:
1914 case TAG_FMT_UNDEFINED:
1915 case TAG_FMT_STRING:
1916 if ((f=image_info->info_list[section_index].list[i].value.s) != NULL) {
1917 efree(f);
1918 }
1919 break;
1920
1921 case TAG_FMT_USHORT:
1922 case TAG_FMT_ULONG:
1923 case TAG_FMT_URATIONAL:
1924 case TAG_FMT_SSHORT:
1925 case TAG_FMT_SLONG:
1926 case TAG_FMT_SRATIONAL:
1927 case TAG_FMT_SINGLE:
1928 case TAG_FMT_DOUBLE:
1929 /* nothing to do here */
1930 if (image_info->info_list[section_index].list[i].length > 1) {
1931 if ((f=image_info->info_list[section_index].list[i].value.list) != NULL) {
1932 efree(f);
1933 }
1934 }
1935 break;
1936 }
1937 }
1938 }
1939 EFREE_IF(image_info->info_list[section_index].list);
1940 }
1941 /* }}} */
1942
1943 /* {{{ add_assoc_image_info
1944 * 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)1945 static void add_assoc_image_info(zval *value, int sub_array, image_info_type *image_info, int section_index TSRMLS_DC)
1946 {
1947 char buffer[64], *val, *name, uname[64];
1948 int i, ap, l, b, idx=0, unknown=0;
1949 #ifdef EXIF_DEBUG
1950 int info_tag;
1951 #endif
1952 image_info_value *info_value;
1953 image_info_data *info_data;
1954 zval *tmpi, *array = NULL;
1955
1956 #ifdef EXIF_DEBUG
1957 /* 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));*/
1958 #endif
1959 if (image_info->info_list[section_index].count) {
1960 if (sub_array) {
1961 MAKE_STD_ZVAL(tmpi);
1962 array_init(tmpi);
1963 } else {
1964 tmpi = value;
1965 }
1966
1967 for(i=0; i<image_info->info_list[section_index].count; i++) {
1968 info_data = &image_info->info_list[section_index].list[i];
1969 #ifdef EXIF_DEBUG
1970 info_tag = info_data->tag; /* conversion */
1971 #endif
1972 info_value = &info_data->value;
1973 if (!(name = info_data->name)) {
1974 snprintf(uname, sizeof(uname), "%d", unknown++);
1975 name = uname;
1976 }
1977 #ifdef EXIF_DEBUG
1978 /* 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));*/
1979 #endif
1980 if (info_data->length==0) {
1981 add_assoc_null(tmpi, name);
1982 } else {
1983 switch (info_data->format) {
1984 default:
1985 /* Standard says more types possible but skip them...
1986 * but allow users to handle data if they know how to
1987 * So not return but use type UNDEFINED
1988 * return;
1989 */
1990 case TAG_FMT_BYTE:
1991 case TAG_FMT_SBYTE:
1992 case TAG_FMT_UNDEFINED:
1993 if (!info_value->s) {
1994 add_assoc_stringl(tmpi, name, "", 0, 1);
1995 } else {
1996 add_assoc_stringl(tmpi, name, info_value->s, info_data->length, 1);
1997 }
1998 break;
1999
2000 case TAG_FMT_STRING:
2001 if (!(val = info_value->s)) {
2002 val = "";
2003 }
2004 if (section_index==SECTION_COMMENT) {
2005 add_index_string(tmpi, idx++, val, 1);
2006 } else {
2007 add_assoc_string(tmpi, name, val, 1);
2008 }
2009 break;
2010
2011 case TAG_FMT_URATIONAL:
2012 case TAG_FMT_SRATIONAL:
2013 /*case TAG_FMT_BYTE:
2014 case TAG_FMT_SBYTE:*/
2015 case TAG_FMT_USHORT:
2016 case TAG_FMT_SSHORT:
2017 case TAG_FMT_SINGLE:
2018 case TAG_FMT_DOUBLE:
2019 case TAG_FMT_ULONG:
2020 case TAG_FMT_SLONG:
2021 /* now the rest, first see if it becomes an array */
2022 if ((l = info_data->length) > 1) {
2023 array = NULL;
2024 MAKE_STD_ZVAL(array);
2025 array_init(array);
2026 }
2027 for(ap=0; ap<l; ap++) {
2028 if (l>1) {
2029 info_value = &info_data->value.list[ap];
2030 }
2031 switch (info_data->format) {
2032 case TAG_FMT_BYTE:
2033 if (l>1) {
2034 info_value = &info_data->value;
2035 for (b=0;b<l;b++) {
2036 add_index_long(array, b, (int)(info_value->s[b]));
2037 }
2038 break;
2039 }
2040 case TAG_FMT_USHORT:
2041 case TAG_FMT_ULONG:
2042 if (l==1) {
2043 add_assoc_long(tmpi, name, (int)info_value->u);
2044 } else {
2045 add_index_long(array, ap, (int)info_value->u);
2046 }
2047 break;
2048
2049 case TAG_FMT_URATIONAL:
2050 snprintf(buffer, sizeof(buffer), "%i/%i", info_value->ur.num, info_value->ur.den);
2051 if (l==1) {
2052 add_assoc_string(tmpi, name, buffer, 1);
2053 } else {
2054 add_index_string(array, ap, buffer, 1);
2055 }
2056 break;
2057
2058 case TAG_FMT_SBYTE:
2059 if (l>1) {
2060 info_value = &info_data->value;
2061 for (b=0;b<l;b++) {
2062 add_index_long(array, ap, (int)info_value->s[b]);
2063 }
2064 break;
2065 }
2066 case TAG_FMT_SSHORT:
2067 case TAG_FMT_SLONG:
2068 if (l==1) {
2069 add_assoc_long(tmpi, name, info_value->i);
2070 } else {
2071 add_index_long(array, ap, info_value->i);
2072 }
2073 break;
2074
2075 case TAG_FMT_SRATIONAL:
2076 snprintf(buffer, sizeof(buffer), "%i/%i", info_value->sr.num, info_value->sr.den);
2077 if (l==1) {
2078 add_assoc_string(tmpi, name, buffer, 1);
2079 } else {
2080 add_index_string(array, ap, buffer, 1);
2081 }
2082 break;
2083
2084 case TAG_FMT_SINGLE:
2085 if (l==1) {
2086 add_assoc_double(tmpi, name, info_value->f);
2087 } else {
2088 add_index_double(array, ap, info_value->f);
2089 }
2090 break;
2091
2092 case TAG_FMT_DOUBLE:
2093 if (l==1) {
2094 add_assoc_double(tmpi, name, info_value->d);
2095 } else {
2096 add_index_double(array, ap, info_value->d);
2097 }
2098 break;
2099 }
2100 info_value = &info_data->value.list[ap];
2101 }
2102 if (l>1) {
2103 add_assoc_zval(tmpi, name, array);
2104 }
2105 break;
2106 }
2107 }
2108 }
2109 if (sub_array) {
2110 add_assoc_zval(value, exif_get_sectionname(section_index), tmpi);
2111 }
2112 }
2113 }
2114 /* }}} */
2115
2116 /* {{{ Markers
2117 JPEG markers consist of one or more 0xFF bytes, followed by a marker
2118 code byte (which is not an FF). Here are the marker codes of interest
2119 in this program. (See jdmarker.c for a more complete list.)
2120 */
2121
2122 #define M_TEM 0x01 /* temp for arithmetic coding */
2123 #define M_RES 0x02 /* reserved */
2124 #define M_SOF0 0xC0 /* Start Of Frame N */
2125 #define M_SOF1 0xC1 /* N indicates which compression process */
2126 #define M_SOF2 0xC2 /* Only SOF0-SOF2 are now in common use */
2127 #define M_SOF3 0xC3
2128 #define M_DHT 0xC4
2129 #define M_SOF5 0xC5 /* NB: codes C4 and CC are NOT SOF markers */
2130 #define M_SOF6 0xC6
2131 #define M_SOF7 0xC7
2132 #define M_JPEG 0x08 /* reserved for extensions */
2133 #define M_SOF9 0xC9
2134 #define M_SOF10 0xCA
2135 #define M_SOF11 0xCB
2136 #define M_DAC 0xCC /* arithmetic table */
2137 #define M_SOF13 0xCD
2138 #define M_SOF14 0xCE
2139 #define M_SOF15 0xCF
2140 #define M_RST0 0xD0 /* restart segment */
2141 #define M_RST1 0xD1
2142 #define M_RST2 0xD2
2143 #define M_RST3 0xD3
2144 #define M_RST4 0xD4
2145 #define M_RST5 0xD5
2146 #define M_RST6 0xD6
2147 #define M_RST7 0xD7
2148 #define M_SOI 0xD8 /* Start Of Image (beginning of datastream) */
2149 #define M_EOI 0xD9 /* End Of Image (end of datastream) */
2150 #define M_SOS 0xDA /* Start Of Scan (begins compressed data) */
2151 #define M_DQT 0xDB
2152 #define M_DNL 0xDC
2153 #define M_DRI 0xDD
2154 #define M_DHP 0xDE
2155 #define M_EXP 0xDF
2156 #define M_APP0 0xE0 /* JPEG: 'JFIFF' AND (additional 'JFXX') */
2157 #define M_EXIF 0xE1 /* Exif Attribute Information */
2158 #define M_APP2 0xE2 /* Flash Pix Extension Data? */
2159 #define M_APP3 0xE3
2160 #define M_APP4 0xE4
2161 #define M_APP5 0xE5
2162 #define M_APP6 0xE6
2163 #define M_APP7 0xE7
2164 #define M_APP8 0xE8
2165 #define M_APP9 0xE9
2166 #define M_APP10 0xEA
2167 #define M_APP11 0xEB
2168 #define M_APP12 0xEC
2169 #define M_APP13 0xED /* IPTC International Press Telecommunications Council */
2170 #define M_APP14 0xEE /* Software, Copyright? */
2171 #define M_APP15 0xEF
2172 #define M_JPG0 0xF0
2173 #define M_JPG1 0xF1
2174 #define M_JPG2 0xF2
2175 #define M_JPG3 0xF3
2176 #define M_JPG4 0xF4
2177 #define M_JPG5 0xF5
2178 #define M_JPG6 0xF6
2179 #define M_JPG7 0xF7
2180 #define M_JPG8 0xF8
2181 #define M_JPG9 0xF9
2182 #define M_JPG10 0xFA
2183 #define M_JPG11 0xFB
2184 #define M_JPG12 0xFC
2185 #define M_JPG13 0xFD
2186 #define M_COM 0xFE /* COMment */
2187
2188 #define M_PSEUDO 0x123 /* Extra value. */
2189
2190 /* }}} */
2191
2192 /* {{{ jpeg2000 markers
2193 */
2194 /* Markers x30 - x3F do not have a segment */
2195 /* Markers x00, x01, xFE, xC0 - xDF ISO/IEC 10918-1 -> M_<xx> */
2196 /* Markers xF0 - xF7 ISO/IEC 10918-3 */
2197 /* Markers xF7 - xF8 ISO/IEC 14495-1 */
2198 /* XY=Main/Tile-header:(R:required, N:not_allowed, O:optional, L:last_marker) */
2199 #define JC_SOC 0x4F /* NN, Start of codestream */
2200 #define JC_SIZ 0x51 /* RN, Image and tile size */
2201 #define JC_COD 0x52 /* RO, Codeing style defaulte */
2202 #define JC_COC 0x53 /* OO, Coding style component */
2203 #define JC_TLM 0x55 /* ON, Tile part length main header */
2204 #define JC_PLM 0x57 /* ON, Packet length main header */
2205 #define JC_PLT 0x58 /* NO, Packet length tile part header */
2206 #define JC_QCD 0x5C /* RO, Quantization default */
2207 #define JC_QCC 0x5D /* OO, Quantization component */
2208 #define JC_RGN 0x5E /* OO, Region of interest */
2209 #define JC_POD 0x5F /* OO, Progression order default */
2210 #define JC_PPM 0x60 /* ON, Packed packet headers main header */
2211 #define JC_PPT 0x61 /* NO, Packet packet headers tile part header */
2212 #define JC_CME 0x64 /* OO, Comment: "LL E <text>" E=0:binary, E=1:ascii */
2213 #define JC_SOT 0x90 /* NR, Start of tile */
2214 #define JC_SOP 0x91 /* NO, Start of packeter default */
2215 #define JC_EPH 0x92 /* NO, End of packet header */
2216 #define JC_SOD 0x93 /* NL, Start of data */
2217 #define JC_EOC 0xD9 /* NN, End of codestream */
2218 /* }}} */
2219
2220 /* {{{ exif_process_COM
2221 Process a COM marker.
2222 We want to print out the marker contents as legible text;
2223 we must guard against random junk and varying newline representations.
2224 */
exif_process_COM(image_info_type * image_info,char * value,size_t length TSRMLS_DC)2225 static void exif_process_COM (image_info_type *image_info, char *value, size_t length TSRMLS_DC)
2226 {
2227 exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length-2, value+2 TSRMLS_CC);
2228 }
2229 /* }}} */
2230
2231 /* {{{ exif_process_CME
2232 Process a CME marker.
2233 We want to print out the marker contents as legible text;
2234 we must guard against random junk and varying newline representations.
2235 */
2236 #ifdef EXIF_JPEG2000
exif_process_CME(image_info_type * image_info,char * value,size_t length TSRMLS_DC)2237 static void exif_process_CME (image_info_type *image_info, char *value, size_t length TSRMLS_DC)
2238 {
2239 if (length>3) {
2240 switch(value[2]) {
2241 case 0:
2242 exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, length, value TSRMLS_CC);
2243 break;
2244 case 1:
2245 exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length, value);
2246 break;
2247 default:
2248 php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Undefined JPEG2000 comment encoding");
2249 break;
2250 }
2251 } else {
2252 exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, 0, NULL);
2253 php_error_docref(NULL TSRMLS_CC, E_NOTICE, "JPEG2000 comment section too small");
2254 }
2255 }
2256 #endif
2257 /* }}} */
2258
2259 /* {{{ exif_process_SOFn
2260 * Process a SOFn marker. This is useful for the image dimensions */
exif_process_SOFn(uchar * Data,int marker,jpeg_sof_info * result)2261 static void exif_process_SOFn (uchar *Data, int marker, jpeg_sof_info *result)
2262 {
2263 /* 0xFF SOSn SectLen(2) Bits(1) Height(2) Width(2) Channels(1) 3*Channels (1) */
2264 result->bits_per_sample = Data[2];
2265 result->height = php_jpg_get16(Data+3);
2266 result->width = php_jpg_get16(Data+5);
2267 result->num_components = Data[7];
2268
2269 /* switch (marker) {
2270 case M_SOF0: process = "Baseline"; break;
2271 case M_SOF1: process = "Extended sequential"; break;
2272 case M_SOF2: process = "Progressive"; break;
2273 case M_SOF3: process = "Lossless"; break;
2274 case M_SOF5: process = "Differential sequential"; break;
2275 case M_SOF6: process = "Differential progressive"; break;
2276 case M_SOF7: process = "Differential lossless"; break;
2277 case M_SOF9: process = "Extended sequential, arithmetic coding"; break;
2278 case M_SOF10: process = "Progressive, arithmetic coding"; break;
2279 case M_SOF11: process = "Lossless, arithmetic coding"; break;
2280 case M_SOF13: process = "Differential sequential, arithmetic coding"; break;
2281 case M_SOF14: process = "Differential progressive, arithmetic coding"; break;
2282 case M_SOF15: process = "Differential lossless, arithmetic coding"; break;
2283 default: process = "Unknown"; break;
2284 }*/
2285 }
2286 /* }}} */
2287
2288 /* forward declarations */
2289 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);
2290 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);
2291
2292 /* {{{ exif_get_markername
2293 Get name of marker */
2294 #ifdef EXIF_DEBUG
exif_get_markername(int marker)2295 static char * exif_get_markername(int marker)
2296 {
2297 switch(marker) {
2298 case 0xC0: return "SOF0";
2299 case 0xC1: return "SOF1";
2300 case 0xC2: return "SOF2";
2301 case 0xC3: return "SOF3";
2302 case 0xC4: return "DHT";
2303 case 0xC5: return "SOF5";
2304 case 0xC6: return "SOF6";
2305 case 0xC7: return "SOF7";
2306 case 0xC9: return "SOF9";
2307 case 0xCA: return "SOF10";
2308 case 0xCB: return "SOF11";
2309 case 0xCD: return "SOF13";
2310 case 0xCE: return "SOF14";
2311 case 0xCF: return "SOF15";
2312 case 0xD8: return "SOI";
2313 case 0xD9: return "EOI";
2314 case 0xDA: return "SOS";
2315 case 0xDB: return "DQT";
2316 case 0xDC: return "DNL";
2317 case 0xDD: return "DRI";
2318 case 0xDE: return "DHP";
2319 case 0xDF: return "EXP";
2320 case 0xE0: return "APP0";
2321 case 0xE1: return "EXIF";
2322 case 0xE2: return "FPIX";
2323 case 0xE3: return "APP3";
2324 case 0xE4: return "APP4";
2325 case 0xE5: return "APP5";
2326 case 0xE6: return "APP6";
2327 case 0xE7: return "APP7";
2328 case 0xE8: return "APP8";
2329 case 0xE9: return "APP9";
2330 case 0xEA: return "APP10";
2331 case 0xEB: return "APP11";
2332 case 0xEC: return "APP12";
2333 case 0xED: return "APP13";
2334 case 0xEE: return "APP14";
2335 case 0xEF: return "APP15";
2336 case 0xF0: return "JPG0";
2337 case 0xFD: return "JPG13";
2338 case 0xFE: return "COM";
2339 case 0x01: return "TEM";
2340 }
2341 return "Unknown";
2342 }
2343 #endif
2344 /* }}} */
2345
2346 /* {{{ proto string exif_tagname(index)
2347 Get headername for index or false if not defined */
PHP_FUNCTION(exif_tagname)2348 PHP_FUNCTION(exif_tagname)
2349 {
2350 long tag;
2351 char *szTemp;
2352
2353 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &tag) == FAILURE) {
2354 return;
2355 }
2356
2357 szTemp = exif_get_tagname(tag, NULL, 0, tag_table_IFD TSRMLS_CC);
2358
2359 if (tag < 0 || !szTemp || !szTemp[0]) {
2360 RETURN_FALSE;
2361 }
2362
2363 RETURN_STRING(szTemp, 1)
2364 }
2365 /* }}} */
2366
2367 /* {{{ exif_ifd_make_value
2368 * 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)2369 static void* exif_ifd_make_value(image_info_data *info_data, int motorola_intel TSRMLS_DC) {
2370 size_t byte_count;
2371 char *value_ptr, *data_ptr;
2372 size_t i;
2373
2374 image_info_value *info_value;
2375
2376 byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
2377 value_ptr = safe_emalloc(max(byte_count, 4), 1, 0);
2378 memset(value_ptr, 0, 4);
2379 if (!info_data->length) {
2380 return value_ptr;
2381 }
2382 if (info_data->format == TAG_FMT_UNDEFINED || info_data->format == TAG_FMT_STRING
2383 || (byte_count>1 && (info_data->format == TAG_FMT_BYTE || info_data->format == TAG_FMT_SBYTE))
2384 ) {
2385 memmove(value_ptr, info_data->value.s, byte_count);
2386 return value_ptr;
2387 } else if (info_data->format == TAG_FMT_BYTE) {
2388 *value_ptr = info_data->value.u;
2389 return value_ptr;
2390 } else if (info_data->format == TAG_FMT_SBYTE) {
2391 *value_ptr = info_data->value.i;
2392 return value_ptr;
2393 } else {
2394 data_ptr = value_ptr;
2395 for(i=0; i<info_data->length; i++) {
2396 if (info_data->length==1) {
2397 info_value = &info_data->value;
2398 } else {
2399 info_value = &info_data->value.list[i];
2400 }
2401 switch(info_data->format) {
2402 case TAG_FMT_USHORT:
2403 php_ifd_set16u(data_ptr, info_value->u, motorola_intel);
2404 data_ptr += 2;
2405 break;
2406 case TAG_FMT_ULONG:
2407 php_ifd_set32u(data_ptr, info_value->u, motorola_intel);
2408 data_ptr += 4;
2409 break;
2410 case TAG_FMT_SSHORT:
2411 php_ifd_set16u(data_ptr, info_value->i, motorola_intel);
2412 data_ptr += 2;
2413 break;
2414 case TAG_FMT_SLONG:
2415 php_ifd_set32u(data_ptr, info_value->i, motorola_intel);
2416 data_ptr += 4;
2417 break;
2418 case TAG_FMT_URATIONAL:
2419 php_ifd_set32u(data_ptr, info_value->sr.num, motorola_intel);
2420 php_ifd_set32u(data_ptr+4, info_value->sr.den, motorola_intel);
2421 data_ptr += 8;
2422 break;
2423 case TAG_FMT_SRATIONAL:
2424 php_ifd_set32u(data_ptr, info_value->ur.num, motorola_intel);
2425 php_ifd_set32u(data_ptr+4, info_value->ur.den, motorola_intel);
2426 data_ptr += 8;
2427 break;
2428 case TAG_FMT_SINGLE:
2429 memmove(data_ptr, &info_value->f, 4);
2430 data_ptr += 4;
2431 break;
2432 case TAG_FMT_DOUBLE:
2433 memmove(data_ptr, &info_value->d, 8);
2434 data_ptr += 8;
2435 break;
2436 }
2437 }
2438 }
2439 return value_ptr;
2440 }
2441 /* }}} */
2442
2443 /* {{{ exif_thumbnail_build
2444 * Check and build thumbnail */
exif_thumbnail_build(image_info_type * ImageInfo TSRMLS_DC)2445 static void exif_thumbnail_build(image_info_type *ImageInfo TSRMLS_DC) {
2446 size_t new_size, new_move, new_value;
2447 char *new_data;
2448 void *value_ptr;
2449 int i, byte_count;
2450 image_info_list *info_list;
2451 image_info_data *info_data;
2452 #ifdef EXIF_DEBUG
2453 char tagname[64];
2454 #endif
2455
2456 if (!ImageInfo->read_thumbnail || !ImageInfo->Thumbnail.offset || !ImageInfo->Thumbnail.size) {
2457 return; /* ignore this call */
2458 }
2459 #ifdef EXIF_DEBUG
2460 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: filetype = %d", ImageInfo->Thumbnail.filetype);
2461 #endif
2462 switch(ImageInfo->Thumbnail.filetype) {
2463 default:
2464 case IMAGE_FILETYPE_JPEG:
2465 /* done */
2466 break;
2467 case IMAGE_FILETYPE_TIFF_II:
2468 case IMAGE_FILETYPE_TIFF_MM:
2469 info_list = &ImageInfo->info_list[SECTION_THUMBNAIL];
2470 new_size = 8 + 2 + info_list->count * 12 + 4;
2471 #ifdef EXIF_DEBUG
2472 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: size of signature + directory(%d): 0x%02X", info_list->count, new_size);
2473 #endif
2474 new_value= new_size; /* offset for ifd values outside ifd directory */
2475 for (i=0; i<info_list->count; i++) {
2476 info_data = &info_list->list[i];
2477 byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
2478 if (byte_count > 4) {
2479 new_size += byte_count;
2480 }
2481 }
2482 new_move = new_size;
2483 new_data = safe_erealloc(ImageInfo->Thumbnail.data, 1, ImageInfo->Thumbnail.size, new_size);
2484 ImageInfo->Thumbnail.data = new_data;
2485 memmove(ImageInfo->Thumbnail.data + new_move, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
2486 ImageInfo->Thumbnail.size += new_size;
2487 /* fill in data */
2488 if (ImageInfo->motorola_intel) {
2489 memmove(new_data, "MM\x00\x2a\x00\x00\x00\x08", 8);
2490 } else {
2491 memmove(new_data, "II\x2a\x00\x08\x00\x00\x00", 8);
2492 }
2493 new_data += 8;
2494 php_ifd_set16u(new_data, info_list->count, ImageInfo->motorola_intel);
2495 new_data += 2;
2496 for (i=0; i<info_list->count; i++) {
2497 info_data = &info_list->list[i];
2498 byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
2499 #ifdef EXIF_DEBUG
2500 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);
2501 #endif
2502 if (info_data->tag==TAG_STRIP_OFFSETS || info_data->tag==TAG_JPEG_INTERCHANGE_FORMAT) {
2503 php_ifd_set16u(new_data + 0, info_data->tag, ImageInfo->motorola_intel);
2504 php_ifd_set16u(new_data + 2, TAG_FMT_ULONG, ImageInfo->motorola_intel);
2505 php_ifd_set32u(new_data + 4, 1, ImageInfo->motorola_intel);
2506 php_ifd_set32u(new_data + 8, new_move, ImageInfo->motorola_intel);
2507 } else {
2508 php_ifd_set16u(new_data + 0, info_data->tag, ImageInfo->motorola_intel);
2509 php_ifd_set16u(new_data + 2, info_data->format, ImageInfo->motorola_intel);
2510 php_ifd_set32u(new_data + 4, info_data->length, ImageInfo->motorola_intel);
2511 value_ptr = exif_ifd_make_value(info_data, ImageInfo->motorola_intel TSRMLS_CC);
2512 if (byte_count <= 4) {
2513 memmove(new_data+8, value_ptr, 4);
2514 } else {
2515 php_ifd_set32u(new_data+8, new_value, ImageInfo->motorola_intel);
2516 #ifdef EXIF_DEBUG
2517 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: writing with value offset: 0x%04X + 0x%02X", new_value, byte_count);
2518 #endif
2519 memmove(ImageInfo->Thumbnail.data+new_value, value_ptr, byte_count);
2520 new_value += byte_count;
2521 }
2522 efree(value_ptr);
2523 }
2524 new_data += 12;
2525 }
2526 memset(new_data, 0, 4); /* next ifd pointer */
2527 #ifdef EXIF_DEBUG
2528 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: created");
2529 #endif
2530 break;
2531 }
2532 }
2533 /* }}} */
2534
2535 /* {{{ exif_thumbnail_extract
2536 * Grab the thumbnail, corrected */
exif_thumbnail_extract(image_info_type * ImageInfo,char * offset,size_t length TSRMLS_DC)2537 static void exif_thumbnail_extract(image_info_type *ImageInfo, char *offset, size_t length TSRMLS_DC) {
2538 if (ImageInfo->Thumbnail.data) {
2539 exif_error_docref("exif_read_data#error_mult_thumb" EXIFERR_CC, ImageInfo, E_WARNING, "Multiple possible thumbnails");
2540 return; /* Should not happen */
2541 }
2542 if (!ImageInfo->read_thumbnail) {
2543 return; /* ignore this call */
2544 }
2545 /* according to exif2.1, the thumbnail is not supposed to be greater than 64K */
2546 if (ImageInfo->Thumbnail.size >= 65536
2547 || ImageInfo->Thumbnail.size <= 0
2548 || ImageInfo->Thumbnail.offset <= 0
2549 ) {
2550 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Illegal thumbnail size/offset");
2551 return;
2552 }
2553 /* Check to make sure we are not going to go past the ExifLength */
2554 if ((ImageInfo->Thumbnail.offset + ImageInfo->Thumbnail.size) > length) {
2555 EXIF_ERRLOG_THUMBEOF(ImageInfo)
2556 return;
2557 }
2558 ImageInfo->Thumbnail.data = estrndup(offset + ImageInfo->Thumbnail.offset, ImageInfo->Thumbnail.size);
2559 exif_thumbnail_build(ImageInfo TSRMLS_CC);
2560 }
2561 /* }}} */
2562
2563 /* {{{ exif_process_undefined
2564 * 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)2565 static int exif_process_undefined(char **result, char *value, size_t byte_count TSRMLS_DC) {
2566 /* we cannot use strlcpy - here the problem is that we have to copy NUL
2567 * chars up to byte_count, we also have to add a single NUL character to
2568 * force end of string.
2569 * estrndup does not return length
2570 */
2571 if (byte_count) {
2572 (*result) = estrndup(value, byte_count); /* NULL @ byte_count!!! */
2573 return byte_count+1;
2574 }
2575 return 0;
2576 }
2577 /* }}} */
2578
2579 /* {{{ exif_process_string_raw
2580 * 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)2581 static int exif_process_string_raw(char **result, char *value, size_t byte_count) {
2582 /* we cannot use strlcpy - here the problem is that we have to copy NUL
2583 * chars up to byte_count, we also have to add a single NUL character to
2584 * force end of string.
2585 */
2586 if (byte_count) {
2587 (*result) = safe_emalloc(byte_count, 1, 1);
2588 memcpy(*result, value, byte_count);
2589 (*result)[byte_count] = '\0';
2590 return byte_count+1;
2591 }
2592 return 0;
2593 }
2594 /* }}} */
2595
2596 /* {{{ exif_process_string
2597 * Copy a string in Exif header to a character string and return length of allocated buffer if any.
2598 * 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)2599 static int exif_process_string(char **result, char *value, size_t byte_count TSRMLS_DC) {
2600 /* we cannot use strlcpy - here the problem is that we cannot use strlen to
2601 * determin length of string and we cannot use strlcpy with len=byte_count+1
2602 * because then we might get into an EXCEPTION if we exceed an allocated
2603 * memory page...so we use php_strnlen in conjunction with memcpy and add the NUL
2604 * char.
2605 * estrdup would sometimes allocate more memory and does not return length
2606 */
2607 if ((byte_count=php_strnlen(value, byte_count)) > 0) {
2608 return exif_process_undefined(result, value, byte_count TSRMLS_CC);
2609 }
2610 (*result) = estrndup("", 1); /* force empty string */
2611 return byte_count+1;
2612 }
2613 /* }}} */
2614
2615 /* {{{ exif_process_user_comment
2616 * Process UserComment in IFD. */
exif_process_user_comment(image_info_type * ImageInfo,char ** pszInfoPtr,char ** pszEncoding,char * szValuePtr,int ByteCount TSRMLS_DC)2617 static int exif_process_user_comment(image_info_type *ImageInfo, char **pszInfoPtr, char **pszEncoding, char *szValuePtr, int ByteCount TSRMLS_DC)
2618 {
2619 int a;
2620 char *decode;
2621 size_t len;;
2622
2623 *pszEncoding = NULL;
2624 /* Copy the comment */
2625 if (ByteCount>=8) {
2626 if (!memcmp(szValuePtr, "UNICODE\0", 8)) {
2627 *pszEncoding = estrdup((const char*)szValuePtr);
2628 szValuePtr = szValuePtr+8;
2629 ByteCount -= 8;
2630 /* First try to detect BOM: ZERO WIDTH NOBREAK SPACE (FEFF 16)
2631 * since we have no encoding support for the BOM yet we skip that.
2632 */
2633 if (!memcmp(szValuePtr, "\xFE\xFF", 2)) {
2634 decode = "UCS-2BE";
2635 szValuePtr = szValuePtr+2;
2636 ByteCount -= 2;
2637 } else if (!memcmp(szValuePtr, "\xFF\xFE", 2)) {
2638 decode = "UCS-2LE";
2639 szValuePtr = szValuePtr+2;
2640 ByteCount -= 2;
2641 } else if (ImageInfo->motorola_intel) {
2642 decode = ImageInfo->decode_unicode_be;
2643 } else {
2644 decode = ImageInfo->decode_unicode_le;
2645 }
2646 /* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX */
2647 if (zend_multibyte_encoding_converter(
2648 (unsigned char**)pszInfoPtr,
2649 &len,
2650 (unsigned char*)szValuePtr,
2651 ByteCount,
2652 zend_multibyte_fetch_encoding(ImageInfo->encode_unicode TSRMLS_CC),
2653 zend_multibyte_fetch_encoding(decode TSRMLS_CC)
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 if (zend_multibyte_encoding_converter(
2669 (unsigned char**)pszInfoPtr,
2670 &len,
2671 (unsigned char*)szValuePtr,
2672 ByteCount,
2673 zend_multibyte_fetch_encoding(ImageInfo->encode_jis TSRMLS_CC),
2674 zend_multibyte_fetch_encoding(ImageInfo->motorola_intel ? ImageInfo->decode_jis_be : ImageInfo->decode_jis_le TSRMLS_CC)
2675 TSRMLS_CC) == (size_t)-1) {
2676 len = exif_process_string_raw(pszInfoPtr, szValuePtr, ByteCount);
2677 }
2678 return len;
2679 } else if (!memcmp(szValuePtr, "\0\0\0\0\0\0\0\0", 8)) {
2680 /* 8 NULL means undefined and should be ASCII... */
2681 *pszEncoding = estrdup("UNDEFINED");
2682 szValuePtr = szValuePtr+8;
2683 ByteCount -= 8;
2684 }
2685 }
2686
2687 /* Olympus has this padded with trailing spaces. Remove these first. */
2688 if (ByteCount>0) {
2689 for (a=ByteCount-1;a && szValuePtr[a]==' ';a--) {
2690 (szValuePtr)[a] = '\0';
2691 }
2692 }
2693
2694 /* normal text without encoding */
2695 exif_process_string(pszInfoPtr, szValuePtr, ByteCount TSRMLS_CC);
2696 return strlen(*pszInfoPtr);
2697 }
2698 /* }}} */
2699
2700 /* {{{ exif_process_unicode
2701 * 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)2702 static int exif_process_unicode(image_info_type *ImageInfo, xp_field_type *xp_field, int tag, char *szValuePtr, int ByteCount TSRMLS_DC)
2703 {
2704 xp_field->tag = tag;
2705 xp_field->value = NULL;
2706 /* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX */
2707 if (zend_multibyte_encoding_converter(
2708 (unsigned char**)&xp_field->value,
2709 &xp_field->size,
2710 (unsigned char*)szValuePtr,
2711 ByteCount,
2712 zend_multibyte_fetch_encoding(ImageInfo->encode_unicode TSRMLS_CC),
2713 zend_multibyte_fetch_encoding(ImageInfo->motorola_intel ? ImageInfo->decode_unicode_be : ImageInfo->decode_unicode_le TSRMLS_CC)
2714 TSRMLS_CC) == (size_t)-1) {
2715 xp_field->size = exif_process_string_raw(&xp_field->value, szValuePtr, ByteCount);
2716 }
2717 return xp_field->size;
2718 }
2719 /* }}} */
2720
2721 /* {{{ exif_process_IFD_in_MAKERNOTE
2722 * 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)2723 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)
2724 {
2725 int de, i=0, section_index = SECTION_MAKERNOTE;
2726 int NumDirEntries, old_motorola_intel, offset_diff;
2727 const maker_note_type *maker_note;
2728 char *dir_start;
2729
2730 for (i=0; i<=sizeof(maker_note_array)/sizeof(maker_note_type); i++) {
2731 if (i==sizeof(maker_note_array)/sizeof(maker_note_type))
2732 return FALSE;
2733 maker_note = maker_note_array+i;
2734
2735 /*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "check (%s,%s)", maker_note->make?maker_note->make:"", maker_note->model?maker_note->model:"");*/
2736 if (maker_note->make && (!ImageInfo->make || strcmp(maker_note->make, ImageInfo->make)))
2737 continue;
2738 if (maker_note->model && (!ImageInfo->model || strcmp(maker_note->model, ImageInfo->model)))
2739 continue;
2740 if (maker_note->id_string && strncmp(maker_note->id_string, value_ptr, maker_note->id_string_len))
2741 continue;
2742 break;
2743 }
2744
2745 dir_start = value_ptr + maker_note->offset;
2746
2747 #ifdef EXIF_DEBUG
2748 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));
2749 #endif
2750
2751 ImageInfo->sections_found |= FOUND_MAKERNOTE;
2752
2753 old_motorola_intel = ImageInfo->motorola_intel;
2754 switch (maker_note->byte_order) {
2755 case MN_ORDER_INTEL:
2756 ImageInfo->motorola_intel = 0;
2757 break;
2758 case MN_ORDER_MOTOROLA:
2759 ImageInfo->motorola_intel = 1;
2760 break;
2761 default:
2762 case MN_ORDER_NORMAL:
2763 break;
2764 }
2765
2766 NumDirEntries = php_ifd_get16u(dir_start, ImageInfo->motorola_intel);
2767
2768 switch (maker_note->offset_mode) {
2769 case MN_OFFSET_MAKER:
2770 offset_base = value_ptr;
2771 break;
2772 case MN_OFFSET_GUESS:
2773 offset_diff = 2 + NumDirEntries*12 + 4 - php_ifd_get32u(dir_start+10, ImageInfo->motorola_intel);
2774 #ifdef EXIF_DEBUG
2775 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);
2776 #endif
2777 offset_base = value_ptr + offset_diff;
2778 break;
2779 default:
2780 case MN_OFFSET_NORMAL:
2781 break;
2782 }
2783
2784 if ((2+NumDirEntries*12) > value_len) {
2785 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size: 2 + x%04X*12 = x%04X > x%04X", NumDirEntries, 2+NumDirEntries*12, value_len);
2786 return FALSE;
2787 }
2788
2789 for (de=0;de<NumDirEntries;de++) {
2790 if (!exif_process_IFD_TAG(ImageInfo, dir_start + 2 + 12 * de,
2791 offset_base, IFDlength, displacement, section_index, 0, maker_note->tag_table TSRMLS_CC)) {
2792 return FALSE;
2793 }
2794 }
2795 ImageInfo->motorola_intel = old_motorola_intel;
2796 /* NextDirOffset (must be NULL) = php_ifd_get32u(dir_start+2+12*de, ImageInfo->motorola_intel);*/
2797 #ifdef EXIF_DEBUG
2798 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Subsection %s done", exif_get_sectionname(SECTION_MAKERNOTE));
2799 #endif
2800 return TRUE;
2801 }
2802 /* }}} */
2803
2804 /* {{{ exif_process_IFD_TAG
2805 * 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)2806 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)
2807 {
2808 size_t length;
2809 int tag, format, components;
2810 char *value_ptr, tagname[64], cbuf[32], *outside=NULL;
2811 size_t byte_count, offset_val, fpos, fgot;
2812 int64_t byte_count_signed;
2813 xp_field_type *tmp_xp;
2814 #ifdef EXIF_DEBUG
2815 char *dump_data;
2816 int dump_free;
2817 #endif /* EXIF_DEBUG */
2818
2819 /* Protect against corrupt headers */
2820 if (ImageInfo->ifd_nesting_level > MAX_IFD_NESTING_LEVEL) {
2821 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "corrupt EXIF header: maximum directory nesting level reached");
2822 return FALSE;
2823 }
2824 ImageInfo->ifd_nesting_level++;
2825
2826 tag = php_ifd_get16u(dir_entry, ImageInfo->motorola_intel);
2827 format = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
2828 components = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel);
2829
2830 if (!format || format > NUM_FORMATS) {
2831 /* (-1) catches illegal zero case as unsigned underflows to positive large. */
2832 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);
2833 format = TAG_FMT_BYTE;
2834 /*return TRUE;*/
2835 }
2836
2837 if (components < 0) {
2838 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal components(%ld)", tag, exif_get_tagname(tag, tagname, -12, tag_table TSRMLS_CC), components);
2839 return FALSE;
2840 }
2841
2842 byte_count_signed = (int64_t)components * php_tiff_bytes_per_format[format];
2843
2844 if (byte_count_signed < 0 || (byte_count_signed > INT32_MAX)) {
2845 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));
2846 return FALSE;
2847 }
2848
2849 byte_count = (size_t)byte_count_signed;
2850
2851 if (byte_count > 4) {
2852 offset_val = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
2853 /* If its bigger than 4 bytes, the dir entry contains an offset. */
2854 value_ptr = offset_base+offset_val;
2855 /*
2856 dir_entry is ImageInfo->file.list[sn].data+2+i*12
2857 offset_base is ImageInfo->file.list[sn].data-dir_offset
2858 dir_entry - offset_base is dir_offset+2+i*12
2859 */
2860 if (byte_count > IFDlength || offset_val > IFDlength-byte_count || value_ptr < dir_entry || offset_val < (size_t)(dir_entry-offset_base)) {
2861 /* It is important to check for IMAGE_FILETYPE_TIFF
2862 * JPEG does not use absolute pointers instead its pointers are
2863 * relative to the start of the TIFF header in APP1 section. */
2864 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)) {
2865 if (value_ptr < dir_entry) {
2866 /* we can read this if offset_val > 0 */
2867 /* some files have their values in other parts of the file */
2868 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);
2869 } else {
2870 /* this is for sure not allowed */
2871 /* exception are IFD pointers */
2872 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);
2873 }
2874 return FALSE;
2875 }
2876 if (byte_count>sizeof(cbuf)) {
2877 /* mark as outside range and get buffer */
2878 value_ptr = safe_emalloc(byte_count, 1, 0);
2879 outside = value_ptr;
2880 } else {
2881 /* In most cases we only access a small range so
2882 * it is faster to use a static buffer there
2883 * BUT it offers also the possibility to have
2884 * pointers read without the need to free them
2885 * explicitley before returning. */
2886 memset(&cbuf, 0, sizeof(cbuf));
2887 value_ptr = cbuf;
2888 }
2889
2890 fpos = php_stream_tell(ImageInfo->infile);
2891 php_stream_seek(ImageInfo->infile, offset_val, SEEK_SET);
2892 fgot = php_stream_tell(ImageInfo->infile);
2893 if (fgot!=offset_val) {
2894 EFREE_IF(outside);
2895 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Wrong file pointer: 0x%08X != 0x%08X", fgot, offset_val);
2896 return FALSE;
2897 }
2898 fgot = php_stream_read(ImageInfo->infile, value_ptr, byte_count);
2899 php_stream_seek(ImageInfo->infile, fpos, SEEK_SET);
2900 if (fgot<byte_count) {
2901 EFREE_IF(outside);
2902 EXIF_ERRLOG_FILEEOF(ImageInfo)
2903 return FALSE;
2904 }
2905 }
2906 } else {
2907 /* 4 bytes or less and value is in the dir entry itself */
2908 value_ptr = dir_entry+8;
2909 offset_val= value_ptr-offset_base;
2910 }
2911
2912 ImageInfo->sections_found |= FOUND_ANY_TAG;
2913 #ifdef EXIF_DEBUG
2914 dump_data = exif_dump_data(&dump_free, format, components, length, ImageInfo->motorola_intel, value_ptr TSRMLS_CC);
2915 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);
2916 if (dump_free) {
2917 efree(dump_data);
2918 }
2919 #endif
2920
2921 if (section_index==SECTION_THUMBNAIL) {
2922 if (!ImageInfo->Thumbnail.data) {
2923 switch(tag) {
2924 case TAG_IMAGEWIDTH:
2925 case TAG_COMP_IMAGE_WIDTH:
2926 ImageInfo->Thumbnail.width = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
2927 break;
2928
2929 case TAG_IMAGEHEIGHT:
2930 case TAG_COMP_IMAGE_HEIGHT:
2931 ImageInfo->Thumbnail.height = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
2932 break;
2933
2934 case TAG_STRIP_OFFSETS:
2935 case TAG_JPEG_INTERCHANGE_FORMAT:
2936 /* accept both formats */
2937 ImageInfo->Thumbnail.offset = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
2938 break;
2939
2940 case TAG_STRIP_BYTE_COUNTS:
2941 if (ImageInfo->FileType == IMAGE_FILETYPE_TIFF_II || ImageInfo->FileType == IMAGE_FILETYPE_TIFF_MM) {
2942 ImageInfo->Thumbnail.filetype = ImageInfo->FileType;
2943 } else {
2944 /* motorola is easier to read */
2945 ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_TIFF_MM;
2946 }
2947 ImageInfo->Thumbnail.size = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
2948 break;
2949
2950 case TAG_JPEG_INTERCHANGE_FORMAT_LEN:
2951 if (ImageInfo->Thumbnail.filetype == IMAGE_FILETYPE_UNKNOWN) {
2952 ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_JPEG;
2953 ImageInfo->Thumbnail.size = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
2954 }
2955 break;
2956 }
2957 }
2958 } else {
2959 if (section_index==SECTION_IFD0 || section_index==SECTION_EXIF)
2960 switch(tag) {
2961 case TAG_COPYRIGHT:
2962 /* check for "<photographer> NUL <editor> NUL" */
2963 if (byte_count>1 && (length=php_strnlen(value_ptr, byte_count)) > 0) {
2964 if (length<byte_count-1) {
2965 /* When there are any characters after the first NUL */
2966 ImageInfo->CopyrightPhotographer = estrdup(value_ptr);
2967 ImageInfo->CopyrightEditor = estrndup(value_ptr+length+1, byte_count-length-1);
2968 spprintf(&ImageInfo->Copyright, 0, "%s, %s", value_ptr, value_ptr+length+1);
2969 /* format = TAG_FMT_UNDEFINED; this musn't be ASCII */
2970 /* but we are not supposed to change this */
2971 /* keep in mind that image_info does not store editor value */
2972 } else {
2973 ImageInfo->Copyright = estrndup(value_ptr, byte_count);
2974 }
2975 }
2976 break;
2977
2978 case TAG_USERCOMMENT:
2979 ImageInfo->UserCommentLength = exif_process_user_comment(ImageInfo, &(ImageInfo->UserComment), &(ImageInfo->UserCommentEncoding), value_ptr, byte_count TSRMLS_CC);
2980 break;
2981
2982 case TAG_XP_TITLE:
2983 case TAG_XP_COMMENTS:
2984 case TAG_XP_AUTHOR:
2985 case TAG_XP_KEYWORDS:
2986 case TAG_XP_SUBJECT:
2987 tmp_xp = (xp_field_type*)safe_erealloc(ImageInfo->xp_fields.list, (ImageInfo->xp_fields.count+1), sizeof(xp_field_type), 0);
2988 ImageInfo->sections_found |= FOUND_WINXP;
2989 ImageInfo->xp_fields.list = tmp_xp;
2990 ImageInfo->xp_fields.count++;
2991 exif_process_unicode(ImageInfo, &(ImageInfo->xp_fields.list[ImageInfo->xp_fields.count-1]), tag, value_ptr, byte_count TSRMLS_CC);
2992 break;
2993
2994 case TAG_FNUMBER:
2995 /* Simplest way of expressing aperture, so I trust it the most.
2996 (overwrite previously computed value if there is one) */
2997 ImageInfo->ApertureFNumber = (float)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
2998 break;
2999
3000 case TAG_APERTURE:
3001 case TAG_MAX_APERTURE:
3002 /* More relevant info always comes earlier, so only use this field if we don't
3003 have appropriate aperture information yet. */
3004 if (ImageInfo->ApertureFNumber == 0) {
3005 ImageInfo->ApertureFNumber
3006 = (float)exp(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC)*log(2)*0.5);
3007 }
3008 break;
3009
3010 case TAG_SHUTTERSPEED:
3011 /* More complicated way of expressing exposure time, so only use
3012 this value if we don't already have it from somewhere else.
3013 SHUTTERSPEED comes after EXPOSURE TIME
3014 */
3015 if (ImageInfo->ExposureTime == 0) {
3016 ImageInfo->ExposureTime
3017 = (float)(1/exp(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC)*log(2)));
3018 }
3019 break;
3020 case TAG_EXPOSURETIME:
3021 ImageInfo->ExposureTime = -1;
3022 break;
3023
3024 case TAG_COMP_IMAGE_WIDTH:
3025 ImageInfo->ExifImageWidth = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
3026 break;
3027
3028 case TAG_FOCALPLANE_X_RES:
3029 ImageInfo->FocalplaneXRes = exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
3030 break;
3031
3032 case TAG_SUBJECT_DISTANCE:
3033 /* Inidcates the distacne the autofocus camera is focused to.
3034 Tends to be less accurate as distance increases. */
3035 ImageInfo->Distance = (float)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
3036 break;
3037
3038 case TAG_FOCALPLANE_RESOLUTION_UNIT:
3039 switch((int)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC)) {
3040 case 1: ImageInfo->FocalplaneUnits = 25.4; break; /* inch */
3041 case 2:
3042 /* According to the information I was using, 2 measn meters.
3043 But looking at the Cannon powershot's files, inches is the only
3044 sensible value. */
3045 ImageInfo->FocalplaneUnits = 25.4;
3046 break;
3047
3048 case 3: ImageInfo->FocalplaneUnits = 10; break; /* centimeter */
3049 case 4: ImageInfo->FocalplaneUnits = 1; break; /* milimeter */
3050 case 5: ImageInfo->FocalplaneUnits = .001; break; /* micrometer */
3051 }
3052 break;
3053
3054 case TAG_SUB_IFD:
3055 if (format==TAG_FMT_IFD) {
3056 /* If this is called we are either in a TIFFs thumbnail or a JPEG where we cannot handle it */
3057 /* TIFF thumbnail: our data structure cannot store a thumbnail of a thumbnail */
3058 /* JPEG do we have the data area and what to do with it */
3059 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Skip SUB IFD");
3060 }
3061 break;
3062
3063 case TAG_MAKE:
3064 ImageInfo->make = estrndup(value_ptr, byte_count);
3065 break;
3066 case TAG_MODEL:
3067 ImageInfo->model = estrndup(value_ptr, byte_count);
3068 break;
3069
3070 case TAG_MAKER_NOTE:
3071 exif_process_IFD_in_MAKERNOTE(ImageInfo, value_ptr, byte_count, offset_base, IFDlength, displacement TSRMLS_CC);
3072 break;
3073
3074 case TAG_EXIF_IFD_POINTER:
3075 case TAG_GPS_IFD_POINTER:
3076 case TAG_INTEROP_IFD_POINTER:
3077 if (ReadNextIFD) {
3078 char *Subdir_start;
3079 int sub_section_index = 0;
3080 switch(tag) {
3081 case TAG_EXIF_IFD_POINTER:
3082 #ifdef EXIF_DEBUG
3083 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found EXIF");
3084 #endif
3085 ImageInfo->sections_found |= FOUND_EXIF;
3086 sub_section_index = SECTION_EXIF;
3087 break;
3088 case TAG_GPS_IFD_POINTER:
3089 #ifdef EXIF_DEBUG
3090 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found GPS");
3091 #endif
3092 ImageInfo->sections_found |= FOUND_GPS;
3093 sub_section_index = SECTION_GPS;
3094 break;
3095 case TAG_INTEROP_IFD_POINTER:
3096 #ifdef EXIF_DEBUG
3097 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found INTEROPERABILITY");
3098 #endif
3099 ImageInfo->sections_found |= FOUND_INTEROP;
3100 sub_section_index = SECTION_INTEROP;
3101 break;
3102 }
3103 Subdir_start = offset_base + php_ifd_get32u(value_ptr, ImageInfo->motorola_intel);
3104 if (Subdir_start < offset_base || Subdir_start > offset_base+IFDlength) {
3105 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD Pointer");
3106 return FALSE;
3107 }
3108 if (!exif_process_IFD_in_JPEG(ImageInfo, Subdir_start, offset_base, IFDlength, displacement, sub_section_index TSRMLS_CC)) {
3109 return FALSE;
3110 }
3111 #ifdef EXIF_DEBUG
3112 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Subsection %s done", exif_get_sectionname(sub_section_index));
3113 #endif
3114 }
3115 }
3116 }
3117 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);
3118 EFREE_IF(outside);
3119 return TRUE;
3120 }
3121 /* }}} */
3122
3123 /* {{{ exif_process_IFD_in_JPEG
3124 * 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)3125 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)
3126 {
3127 int de;
3128 int NumDirEntries;
3129 int NextDirOffset;
3130
3131 #ifdef EXIF_DEBUG
3132 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process %s (x%04X(=%d))", exif_get_sectionname(section_index), IFDlength, IFDlength);
3133 #endif
3134
3135 ImageInfo->sections_found |= FOUND_IFD0;
3136
3137 NumDirEntries = php_ifd_get16u(dir_start, ImageInfo->motorola_intel);
3138
3139 if ((dir_start+2+NumDirEntries*12) > (offset_base+IFDlength)) {
3140 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);
3141 return FALSE;
3142 }
3143
3144 for (de=0;de<NumDirEntries;de++) {
3145 if (!exif_process_IFD_TAG(ImageInfo, dir_start + 2 + 12 * de,
3146 offset_base, IFDlength, displacement, section_index, 1, exif_get_tag_table(section_index) TSRMLS_CC)) {
3147 return FALSE;
3148 }
3149 }
3150 /*
3151 * Ignore IFD2 if it purportedly exists
3152 */
3153 if (section_index == SECTION_THUMBNAIL) {
3154 return TRUE;
3155 }
3156 /*
3157 * Hack to make it process IDF1 I hope
3158 * There are 2 IDFs, the second one holds the keys (0x0201 and 0x0202) to the thumbnail
3159 */
3160 NextDirOffset = php_ifd_get32u(dir_start+2+12*de, ImageInfo->motorola_intel);
3161 if (NextDirOffset) {
3162 /* the next line seems false but here IFDlength means length of all IFDs */
3163 if (offset_base + NextDirOffset < offset_base || offset_base + NextDirOffset > offset_base+IFDlength) {
3164 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD offset");
3165 return FALSE;
3166 }
3167 /* That is the IFD for the first thumbnail */
3168 #ifdef EXIF_DEBUG
3169 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Expect next IFD to be thumbnail");
3170 #endif
3171 if (exif_process_IFD_in_JPEG(ImageInfo, offset_base + NextDirOffset, offset_base, IFDlength, displacement, SECTION_THUMBNAIL TSRMLS_CC)) {
3172 #ifdef EXIF_DEBUG
3173 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail size: 0x%04X", ImageInfo->Thumbnail.size);
3174 #endif
3175 if (ImageInfo->Thumbnail.filetype != IMAGE_FILETYPE_UNKNOWN
3176 && ImageInfo->Thumbnail.size
3177 && ImageInfo->Thumbnail.offset
3178 && ImageInfo->read_thumbnail
3179 ) {
3180 exif_thumbnail_extract(ImageInfo, offset_base, IFDlength TSRMLS_CC);
3181 }
3182 return TRUE;
3183 } else {
3184 return FALSE;
3185 }
3186 }
3187 return TRUE;
3188 }
3189 /* }}} */
3190
3191 /* {{{ exif_process_TIFF_in_JPEG
3192 Process a TIFF header in a JPEG file
3193 */
exif_process_TIFF_in_JPEG(image_info_type * ImageInfo,char * CharBuf,size_t length,size_t displacement TSRMLS_DC)3194 static void exif_process_TIFF_in_JPEG(image_info_type *ImageInfo, char *CharBuf, size_t length, size_t displacement TSRMLS_DC)
3195 {
3196 unsigned exif_value_2a, offset_of_ifd;
3197
3198 /* set the thumbnail stuff to nothing so we can test to see if they get set up */
3199 if (memcmp(CharBuf, "II", 2) == 0) {
3200 ImageInfo->motorola_intel = 0;
3201 } else if (memcmp(CharBuf, "MM", 2) == 0) {
3202 ImageInfo->motorola_intel = 1;
3203 } else {
3204 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF alignment marker");
3205 return;
3206 }
3207
3208 /* Check the next two values for correctness. */
3209 exif_value_2a = php_ifd_get16u(CharBuf+2, ImageInfo->motorola_intel);
3210 offset_of_ifd = php_ifd_get32u(CharBuf+4, ImageInfo->motorola_intel);
3211 if ( exif_value_2a != 0x2a || offset_of_ifd < 0x08) {
3212 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF start (1)");
3213 return;
3214 }
3215 if (offset_of_ifd > length) {
3216 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid IFD start");
3217 return;
3218 }
3219
3220 ImageInfo->sections_found |= FOUND_IFD0;
3221 /* First directory starts at offset 8. Offsets starts at 0. */
3222 exif_process_IFD_in_JPEG(ImageInfo, CharBuf+offset_of_ifd, CharBuf, length/*-14*/, displacement, SECTION_IFD0 TSRMLS_CC);
3223
3224 #ifdef EXIF_DEBUG
3225 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process TIFF in JPEG done");
3226 #endif
3227
3228 /* Compute the CCD width, in milimeters. */
3229 if (ImageInfo->FocalplaneXRes != 0) {
3230 ImageInfo->CCDWidth = (float)(ImageInfo->ExifImageWidth * ImageInfo->FocalplaneUnits / ImageInfo->FocalplaneXRes);
3231 }
3232 }
3233 /* }}} */
3234
3235 /* {{{ exif_process_APP1
3236 Process an JPEG APP1 block marker
3237 Describes all the drivel that most digital cameras include...
3238 */
exif_process_APP1(image_info_type * ImageInfo,char * CharBuf,size_t length,size_t displacement TSRMLS_DC)3239 static void exif_process_APP1(image_info_type *ImageInfo, char *CharBuf, size_t length, size_t displacement TSRMLS_DC)
3240 {
3241 /* Check the APP1 for Exif Identifier Code */
3242 static const uchar ExifHeader[] = {0x45, 0x78, 0x69, 0x66, 0x00, 0x00};
3243 if (length <= 8 || memcmp(CharBuf+2, ExifHeader, 6)) {
3244 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Incorrect APP1 Exif Identifier Code");
3245 return;
3246 }
3247 exif_process_TIFF_in_JPEG(ImageInfo, CharBuf + 8, length - 8, displacement+8 TSRMLS_CC);
3248 #ifdef EXIF_DEBUG
3249 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process APP1/EXIF done");
3250 #endif
3251 }
3252 /* }}} */
3253
3254 /* {{{ exif_process_APP12
3255 Process an JPEG APP12 block marker used by OLYMPUS
3256 */
exif_process_APP12(image_info_type * ImageInfo,char * buffer,size_t length TSRMLS_DC)3257 static void exif_process_APP12(image_info_type *ImageInfo, char *buffer, size_t length TSRMLS_DC)
3258 {
3259 size_t l1, l2=0;
3260
3261 if ((l1 = php_strnlen(buffer+2, length-2)) > 0) {
3262 exif_iif_add_tag(ImageInfo, SECTION_APP12, "Company", TAG_NONE, TAG_FMT_STRING, l1, buffer+2 TSRMLS_CC);
3263 if (length > 2+l1+1) {
3264 l2 = php_strnlen(buffer+2+l1+1, length-2-l1-1);
3265 exif_iif_add_tag(ImageInfo, SECTION_APP12, "Info", TAG_NONE, TAG_FMT_STRING, l2, buffer+2+l1+1 TSRMLS_CC);
3266 }
3267 }
3268 #ifdef EXIF_DEBUG
3269 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process section APP12 with l1=%d, l2=%d done", l1, l2);
3270 #endif
3271 }
3272 /* }}} */
3273
3274 /* {{{ exif_scan_JPEG_header
3275 * Parse the marker stream until SOS or EOI is seen; */
exif_scan_JPEG_header(image_info_type * ImageInfo TSRMLS_DC)3276 static int exif_scan_JPEG_header(image_info_type *ImageInfo TSRMLS_DC)
3277 {
3278 int section, sn;
3279 int marker = 0, last_marker = M_PSEUDO, comment_correction=1;
3280 unsigned int ll, lh;
3281 uchar *Data;
3282 size_t fpos, size, got, itemlen;
3283 jpeg_sof_info sof_info;
3284
3285 for(section=0;;section++) {
3286 #ifdef EXIF_DEBUG
3287 fpos = php_stream_tell(ImageInfo->infile);
3288 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Needing section %d @ 0x%08X", ImageInfo->file.count, fpos);
3289 #endif
3290
3291 /* get marker byte, swallowing possible padding */
3292 /* some software does not count the length bytes of COM section */
3293 /* one company doing so is very much envolved in JPEG... so we accept too */
3294 if (last_marker==M_COM && comment_correction) {
3295 comment_correction = 2;
3296 }
3297 do {
3298 if ((marker = php_stream_getc(ImageInfo->infile)) == EOF) {
3299 EXIF_ERRLOG_CORRUPT(ImageInfo)
3300 return FALSE;
3301 }
3302 if (last_marker==M_COM && comment_correction>0) {
3303 if (marker!=0xFF) {
3304 marker = 0xff;
3305 comment_correction--;
3306 } else {
3307 last_marker = M_PSEUDO; /* stop skipping 0 for M_COM */
3308 }
3309 }
3310 } while (marker == 0xff);
3311 if (last_marker==M_COM && !comment_correction) {
3312 exif_error_docref("exif_read_data#error_mcom" EXIFERR_CC, ImageInfo, E_NOTICE, "Image has corrupt COM section: some software set wrong length information");
3313 }
3314 if (last_marker==M_COM && comment_correction)
3315 return M_EOI; /* ah illegal: char after COM section not 0xFF */
3316
3317 fpos = php_stream_tell(ImageInfo->infile);
3318
3319 if (marker == 0xff) {
3320 /* 0xff is legal padding, but if we get that many, something's wrong. */
3321 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "To many padding bytes");
3322 return FALSE;
3323 }
3324
3325 /* Read the length of the section. */
3326 if ((lh = php_stream_getc(ImageInfo->infile)) == EOF) {
3327 EXIF_ERRLOG_CORRUPT(ImageInfo)
3328 return FALSE;
3329 }
3330 if ((ll = php_stream_getc(ImageInfo->infile)) == EOF) {
3331 EXIF_ERRLOG_CORRUPT(ImageInfo)
3332 return FALSE;
3333 }
3334
3335 itemlen = (lh << 8) | ll;
3336
3337 if (itemlen < 2) {
3338 #ifdef EXIF_DEBUG
3339 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s, Section length: 0x%02X%02X", EXIF_ERROR_CORRUPT, lh, ll);
3340 #else
3341 EXIF_ERRLOG_CORRUPT(ImageInfo)
3342 #endif
3343 return FALSE;
3344 }
3345
3346 sn = exif_file_sections_add(ImageInfo, marker, itemlen+1, NULL);
3347 Data = ImageInfo->file.list[sn].data;
3348
3349 /* Store first two pre-read bytes. */
3350 Data[0] = (uchar)lh;
3351 Data[1] = (uchar)ll;
3352
3353 got = php_stream_read(ImageInfo->infile, (char*)(Data+2), itemlen-2); /* Read the whole section. */
3354 if (got != itemlen-2) {
3355 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);
3356 return FALSE;
3357 }
3358
3359 #ifdef EXIF_DEBUG
3360 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);
3361 #endif
3362 switch(marker) {
3363 case M_SOS: /* stop before hitting compressed data */
3364 /* If reading entire image is requested, read the rest of the data. */
3365 if (ImageInfo->read_all) {
3366 /* Determine how much file is left. */
3367 fpos = php_stream_tell(ImageInfo->infile);
3368 size = ImageInfo->FileSize - fpos;
3369 sn = exif_file_sections_add(ImageInfo, M_PSEUDO, size, NULL);
3370 Data = ImageInfo->file.list[sn].data;
3371 got = php_stream_read(ImageInfo->infile, (char*)Data, size);
3372 if (got != size) {
3373 EXIF_ERRLOG_FILEEOF(ImageInfo)
3374 return FALSE;
3375 }
3376 }
3377 return TRUE;
3378
3379 case M_EOI: /* in case it's a tables-only JPEG stream */
3380 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "No image in jpeg!");
3381 return (ImageInfo->sections_found&(~FOUND_COMPUTED)) ? TRUE : FALSE;
3382
3383 case M_COM: /* Comment section */
3384 exif_process_COM(ImageInfo, (char *)Data, itemlen TSRMLS_CC);
3385 break;
3386
3387 case M_EXIF:
3388 if (!(ImageInfo->sections_found&FOUND_IFD0)) {
3389 /*ImageInfo->sections_found |= FOUND_EXIF;*/
3390 /* Seen files from some 'U-lead' software with Vivitar scanner
3391 that uses marker 31 later in the file (no clue what for!) */
3392 exif_process_APP1(ImageInfo, (char *)Data, itemlen, fpos TSRMLS_CC);
3393 }
3394 break;
3395
3396 case M_APP12:
3397 exif_process_APP12(ImageInfo, (char *)Data, itemlen TSRMLS_CC);
3398 break;
3399
3400
3401 case M_SOF0:
3402 case M_SOF1:
3403 case M_SOF2:
3404 case M_SOF3:
3405 case M_SOF5:
3406 case M_SOF6:
3407 case M_SOF7:
3408 case M_SOF9:
3409 case M_SOF10:
3410 case M_SOF11:
3411 case M_SOF13:
3412 case M_SOF14:
3413 case M_SOF15:
3414 if ((itemlen - 2) < 6) {
3415 return FALSE;
3416 }
3417
3418 exif_process_SOFn(Data, marker, &sof_info);
3419 ImageInfo->Width = sof_info.width;
3420 ImageInfo->Height = sof_info.height;
3421 if (sof_info.num_components == 3) {
3422 ImageInfo->IsColor = 1;
3423 } else {
3424 ImageInfo->IsColor = 0;
3425 }
3426 break;
3427 default:
3428 /* skip any other marker silently. */
3429 break;
3430 }
3431
3432 /* keep track of last marker */
3433 last_marker = marker;
3434 }
3435 #ifdef EXIF_DEBUG
3436 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Done");
3437 #endif
3438 return TRUE;
3439 }
3440 /* }}} */
3441
3442 /* {{{ exif_scan_thumbnail
3443 * scan JPEG in thumbnail (memory) */
exif_scan_thumbnail(image_info_type * ImageInfo TSRMLS_DC)3444 static int exif_scan_thumbnail(image_info_type *ImageInfo TSRMLS_DC)
3445 {
3446 uchar c, *data = (uchar*)ImageInfo->Thumbnail.data;
3447 int n, marker;
3448 size_t length=2, pos=0;
3449 jpeg_sof_info sof_info;
3450
3451 if (!data) {
3452 return FALSE; /* nothing to do here */
3453 }
3454 if (memcmp(data, "\xFF\xD8\xFF", 3)) {
3455 if (!ImageInfo->Thumbnail.width && !ImageInfo->Thumbnail.height) {
3456 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Thumbnail is not a JPEG image");
3457 }
3458 return FALSE;
3459 }
3460 for (;;) {
3461 pos += length;
3462 if (pos>=ImageInfo->Thumbnail.size)
3463 return FALSE;
3464 c = data[pos++];
3465 if (pos>=ImageInfo->Thumbnail.size)
3466 return FALSE;
3467 if (c != 0xFF) {
3468 return FALSE;
3469 }
3470 n = 8;
3471 while ((c = data[pos++]) == 0xFF && n--) {
3472 if (pos+3>=ImageInfo->Thumbnail.size)
3473 return FALSE;
3474 /* +3 = pos++ of next check when reaching marker + 2 bytes for length */
3475 }
3476 if (c == 0xFF)
3477 return FALSE;
3478 marker = c;
3479 length = php_jpg_get16(data+pos);
3480 if (pos+length>=ImageInfo->Thumbnail.size) {
3481 return FALSE;
3482 }
3483 #ifdef EXIF_DEBUG
3484 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);
3485 #endif
3486 switch (marker) {
3487 case M_SOF0:
3488 case M_SOF1:
3489 case M_SOF2:
3490 case M_SOF3:
3491 case M_SOF5:
3492 case M_SOF6:
3493 case M_SOF7:
3494 case M_SOF9:
3495 case M_SOF10:
3496 case M_SOF11:
3497 case M_SOF13:
3498 case M_SOF14:
3499 case M_SOF15:
3500 /* handle SOFn block */
3501 exif_process_SOFn(data+pos, marker, &sof_info);
3502 ImageInfo->Thumbnail.height = sof_info.height;
3503 ImageInfo->Thumbnail.width = sof_info.width;
3504 #ifdef EXIF_DEBUG
3505 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: size: %d * %d", sof_info.width, sof_info.height);
3506 #endif
3507 return TRUE;
3508
3509 case M_SOS:
3510 case M_EOI:
3511 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Could not compute size of thumbnail");
3512 return FALSE;
3513 break;
3514
3515 default:
3516 /* just skip */
3517 break;
3518 }
3519 }
3520
3521 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Could not compute size of thumbnail");
3522 return FALSE;
3523 }
3524 /* }}} */
3525
3526 /* {{{ exif_process_IFD_in_TIFF
3527 * Parse the TIFF header; */
exif_process_IFD_in_TIFF(image_info_type * ImageInfo,size_t dir_offset,int section_index TSRMLS_DC)3528 static int exif_process_IFD_in_TIFF(image_info_type *ImageInfo, size_t dir_offset, int section_index TSRMLS_DC)
3529 {
3530 int i, sn, num_entries, sub_section_index = 0;
3531 unsigned char *dir_entry;
3532 char tagname[64];
3533 size_t ifd_size, dir_size, entry_offset, next_offset, entry_length, entry_value=0, fgot;
3534 int entry_tag , entry_type;
3535 tag_table_type tag_table = exif_get_tag_table(section_index);
3536
3537 if (ImageInfo->ifd_nesting_level > MAX_IFD_NESTING_LEVEL) {
3538 return FALSE;
3539 }
3540
3541 if (ImageInfo->FileSize >= dir_offset+2) {
3542 sn = exif_file_sections_add(ImageInfo, M_PSEUDO, 2, NULL);
3543 #ifdef EXIF_DEBUG
3544 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);
3545 #endif
3546 php_stream_seek(ImageInfo->infile, dir_offset, SEEK_SET); /* we do not know the order of sections */
3547 php_stream_read(ImageInfo->infile, (char*)ImageInfo->file.list[sn].data, 2);
3548 num_entries = php_ifd_get16u(ImageInfo->file.list[sn].data, ImageInfo->motorola_intel);
3549 dir_size = 2/*num dir entries*/ +12/*length of entry*/*num_entries +4/* offset to next ifd (points to thumbnail or NULL)*/;
3550 if (ImageInfo->FileSize >= dir_offset+dir_size) {
3551 #ifdef EXIF_DEBUG
3552 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);
3553 #endif
3554 if (exif_file_sections_realloc(ImageInfo, sn, dir_size TSRMLS_CC)) {
3555 return FALSE;
3556 }
3557 php_stream_read(ImageInfo->infile, (char*)(ImageInfo->file.list[sn].data+2), dir_size-2);
3558 /*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Dump: %s", exif_char_dump(ImageInfo->file.list[sn].data, dir_size, 0));*/
3559 next_offset = php_ifd_get32u(ImageInfo->file.list[sn].data + dir_size - 4, ImageInfo->motorola_intel);
3560 #ifdef EXIF_DEBUG
3561 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF done, next offset x%04X", next_offset);
3562 #endif
3563 /* now we have the directory we can look how long it should be */
3564 ifd_size = dir_size;
3565 for(i=0;i<num_entries;i++) {
3566 dir_entry = ImageInfo->file.list[sn].data+2+i*12;
3567 entry_tag = php_ifd_get16u(dir_entry+0, ImageInfo->motorola_intel);
3568 entry_type = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
3569 if (entry_type > NUM_FORMATS) {
3570 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);
3571 /* Since this is repeated in exif_process_IFD_TAG make it a notice here */
3572 /* and make it a warning in the exif_process_IFD_TAG which is called */
3573 /* elsewhere. */
3574 entry_type = TAG_FMT_BYTE;
3575 /*The next line would break the image on writeback: */
3576 /* php_ifd_set16u(dir_entry+2, entry_type, ImageInfo->motorola_intel);*/
3577 }
3578 entry_length = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel) * php_tiff_bytes_per_format[entry_type];
3579 if (entry_length <= 4) {
3580 switch(entry_type) {
3581 case TAG_FMT_USHORT:
3582 entry_value = php_ifd_get16u(dir_entry+8, ImageInfo->motorola_intel);
3583 break;
3584 case TAG_FMT_SSHORT:
3585 entry_value = php_ifd_get16s(dir_entry+8, ImageInfo->motorola_intel);
3586 break;
3587 case TAG_FMT_ULONG:
3588 entry_value = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
3589 break;
3590 case TAG_FMT_SLONG:
3591 entry_value = php_ifd_get32s(dir_entry+8, ImageInfo->motorola_intel);
3592 break;
3593 }
3594 switch(entry_tag) {
3595 case TAG_IMAGEWIDTH:
3596 case TAG_COMP_IMAGE_WIDTH:
3597 ImageInfo->Width = entry_value;
3598 break;
3599 case TAG_IMAGEHEIGHT:
3600 case TAG_COMP_IMAGE_HEIGHT:
3601 ImageInfo->Height = entry_value;
3602 break;
3603 case TAG_PHOTOMETRIC_INTERPRETATION:
3604 switch (entry_value) {
3605 case PMI_BLACK_IS_ZERO:
3606 case PMI_WHITE_IS_ZERO:
3607 case PMI_TRANSPARENCY_MASK:
3608 ImageInfo->IsColor = 0;
3609 break;
3610 case PMI_RGB:
3611 case PMI_PALETTE_COLOR:
3612 case PMI_SEPARATED:
3613 case PMI_YCBCR:
3614 case PMI_CIELAB:
3615 ImageInfo->IsColor = 1;
3616 break;
3617 }
3618 break;
3619 }
3620 } else {
3621 entry_offset = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
3622 /* if entry needs expading ifd cache and entry is at end of current ifd cache. */
3623 /* otherwise there may be huge holes between two entries */
3624 if (entry_offset + entry_length > dir_offset + ifd_size
3625 && entry_offset == dir_offset + ifd_size) {
3626 ifd_size = entry_offset + entry_length - dir_offset;
3627 #ifdef EXIF_DEBUG
3628 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);
3629 #endif
3630 }
3631 }
3632 }
3633 if (ImageInfo->FileSize >= dir_offset + ImageInfo->file.list[sn].size) {
3634 if (ifd_size > dir_size) {
3635 if (dir_offset + ifd_size > ImageInfo->FileSize) {
3636 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);
3637 return FALSE;
3638 }
3639 if (exif_file_sections_realloc(ImageInfo, sn, ifd_size TSRMLS_CC)) {
3640 return FALSE;
3641 }
3642 /* read values not stored in directory itself */
3643 #ifdef EXIF_DEBUG
3644 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);
3645 #endif
3646 php_stream_read(ImageInfo->infile, (char*)(ImageInfo->file.list[sn].data+dir_size), ifd_size-dir_size);
3647 #ifdef EXIF_DEBUG
3648 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF, done");
3649 #endif
3650 }
3651 /* now process the tags */
3652 for(i=0;i<num_entries;i++) {
3653 dir_entry = ImageInfo->file.list[sn].data+2+i*12;
3654 entry_tag = php_ifd_get16u(dir_entry+0, ImageInfo->motorola_intel);
3655 entry_type = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
3656 /*entry_length = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel);*/
3657 if (entry_tag == TAG_EXIF_IFD_POINTER ||
3658 entry_tag == TAG_INTEROP_IFD_POINTER ||
3659 entry_tag == TAG_GPS_IFD_POINTER ||
3660 entry_tag == TAG_SUB_IFD
3661 ) {
3662 switch(entry_tag) {
3663 case TAG_EXIF_IFD_POINTER:
3664 ImageInfo->sections_found |= FOUND_EXIF;
3665 sub_section_index = SECTION_EXIF;
3666 break;
3667 case TAG_GPS_IFD_POINTER:
3668 ImageInfo->sections_found |= FOUND_GPS;
3669 sub_section_index = SECTION_GPS;
3670 break;
3671 case TAG_INTEROP_IFD_POINTER:
3672 ImageInfo->sections_found |= FOUND_INTEROP;
3673 sub_section_index = SECTION_INTEROP;
3674 break;
3675 case TAG_SUB_IFD:
3676 ImageInfo->sections_found |= FOUND_THUMBNAIL;
3677 sub_section_index = SECTION_THUMBNAIL;
3678 break;
3679 }
3680 entry_offset = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
3681 #ifdef EXIF_DEBUG
3682 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Next IFD: %s @x%04X", exif_get_sectionname(sub_section_index), entry_offset);
3683 #endif
3684 ImageInfo->ifd_nesting_level++;
3685 exif_process_IFD_in_TIFF(ImageInfo, entry_offset, sub_section_index TSRMLS_CC);
3686 if (section_index!=SECTION_THUMBNAIL && entry_tag==TAG_SUB_IFD) {
3687 if (ImageInfo->Thumbnail.filetype != IMAGE_FILETYPE_UNKNOWN
3688 && ImageInfo->Thumbnail.size
3689 && ImageInfo->Thumbnail.offset
3690 && ImageInfo->read_thumbnail
3691 ) {
3692 #ifdef EXIF_DEBUG
3693 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);
3694 #endif
3695 if (!ImageInfo->Thumbnail.data) {
3696 ImageInfo->Thumbnail.data = safe_emalloc(ImageInfo->Thumbnail.size, 1, 0);
3697 php_stream_seek(ImageInfo->infile, ImageInfo->Thumbnail.offset, SEEK_SET);
3698 fgot = php_stream_read(ImageInfo->infile, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
3699 if (fgot < ImageInfo->Thumbnail.size) {
3700 EXIF_ERRLOG_THUMBEOF(ImageInfo)
3701 }
3702 exif_thumbnail_build(ImageInfo TSRMLS_CC);
3703 }
3704 }
3705 }
3706 #ifdef EXIF_DEBUG
3707 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Next IFD: %s done", exif_get_sectionname(sub_section_index));
3708 #endif
3709 } else {
3710 if (!exif_process_IFD_TAG(ImageInfo, (char*)dir_entry,
3711 (char*)(ImageInfo->file.list[sn].data-dir_offset),
3712 ifd_size, 0, section_index, 0, tag_table TSRMLS_CC)) {
3713 return FALSE;
3714 }
3715 }
3716 }
3717 /* If we had a thumbnail in a SUB_IFD we have ANOTHER image in NEXT IFD */
3718 if (next_offset && section_index != SECTION_THUMBNAIL) {
3719 /* this should be a thumbnail IFD */
3720 /* the thumbnail itself is stored at Tag=StripOffsets */
3721 #ifdef EXIF_DEBUG
3722 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read next IFD (THUMBNAIL) at x%04X", next_offset);
3723 #endif
3724 ImageInfo->ifd_nesting_level++;
3725 exif_process_IFD_in_TIFF(ImageInfo, next_offset, SECTION_THUMBNAIL TSRMLS_CC);
3726 #ifdef EXIF_DEBUG
3727 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);
3728 #endif
3729 if (!ImageInfo->Thumbnail.data && ImageInfo->Thumbnail.offset && ImageInfo->Thumbnail.size && ImageInfo->read_thumbnail) {
3730 ImageInfo->Thumbnail.data = safe_emalloc(ImageInfo->Thumbnail.size, 1, 0);
3731 php_stream_seek(ImageInfo->infile, ImageInfo->Thumbnail.offset, SEEK_SET);
3732 fgot = php_stream_read(ImageInfo->infile, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
3733 if (fgot < ImageInfo->Thumbnail.size) {
3734 EXIF_ERRLOG_THUMBEOF(ImageInfo)
3735 }
3736 exif_thumbnail_build(ImageInfo TSRMLS_CC);
3737 }
3738 #ifdef EXIF_DEBUG
3739 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read next IFD (THUMBNAIL) done");
3740 #endif
3741 }
3742 return TRUE;
3743 } else {
3744 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);
3745 return FALSE;
3746 }
3747 } else {
3748 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);
3749 return FALSE;
3750 }
3751 } else {
3752 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);
3753 return FALSE;
3754 }
3755 }
3756 /* }}} */
3757
3758 /* {{{ exif_scan_FILE_header
3759 * Parse the marker stream until SOS or EOI is seen; */
exif_scan_FILE_header(image_info_type * ImageInfo TSRMLS_DC)3760 static int exif_scan_FILE_header(image_info_type *ImageInfo TSRMLS_DC)
3761 {
3762 unsigned char file_header[8];
3763 int ret = FALSE;
3764
3765 ImageInfo->FileType = IMAGE_FILETYPE_UNKNOWN;
3766
3767 if (ImageInfo->FileSize >= 2) {
3768 php_stream_seek(ImageInfo->infile, 0, SEEK_SET);
3769 if (php_stream_read(ImageInfo->infile, (char*)file_header, 2) != 2) {
3770 return FALSE;
3771 }
3772 if ((file_header[0]==0xff) && (file_header[1]==M_SOI)) {
3773 ImageInfo->FileType = IMAGE_FILETYPE_JPEG;
3774 if (exif_scan_JPEG_header(ImageInfo TSRMLS_CC)) {
3775 ret = TRUE;
3776 } else {
3777 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid JPEG file");
3778 }
3779 } else if (ImageInfo->FileSize >= 8) {
3780 if (php_stream_read(ImageInfo->infile, (char*)(file_header+2), 6) != 6) {
3781 return FALSE;
3782 }
3783 if (!memcmp(file_header, "II\x2A\x00", 4)) {
3784 ImageInfo->FileType = IMAGE_FILETYPE_TIFF_II;
3785 ImageInfo->motorola_intel = 0;
3786 #ifdef EXIF_DEBUG
3787 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "File has TIFF/II format");
3788 #endif
3789 ImageInfo->sections_found |= FOUND_IFD0;
3790 if (exif_process_IFD_in_TIFF(ImageInfo,
3791 php_ifd_get32u(file_header + 4, ImageInfo->motorola_intel),
3792 SECTION_IFD0 TSRMLS_CC)) {
3793 ret = TRUE;
3794 } else {
3795 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF file");
3796 }
3797 } else if (!memcmp(file_header, "MM\x00\x2a", 4)) {
3798 ImageInfo->FileType = IMAGE_FILETYPE_TIFF_MM;
3799 ImageInfo->motorola_intel = 1;
3800 #ifdef EXIF_DEBUG
3801 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "File has TIFF/MM format");
3802 #endif
3803 ImageInfo->sections_found |= FOUND_IFD0;
3804 if (exif_process_IFD_in_TIFF(ImageInfo,
3805 php_ifd_get32u(file_header + 4, ImageInfo->motorola_intel),
3806 SECTION_IFD0 TSRMLS_CC)) {
3807 ret = TRUE;
3808 } else {
3809 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF file");
3810 }
3811 } else {
3812 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "File not supported");
3813 return FALSE;
3814 }
3815 }
3816 } else {
3817 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "File too small (%d)", ImageInfo->FileSize);
3818 }
3819 return ret;
3820 }
3821 /* }}} */
3822
3823 /* {{{ exif_discard_imageinfo
3824 Discard data scanned by exif_read_file.
3825 */
exif_discard_imageinfo(image_info_type * ImageInfo)3826 static int exif_discard_imageinfo(image_info_type *ImageInfo)
3827 {
3828 int i;
3829
3830 EFREE_IF(ImageInfo->FileName);
3831 EFREE_IF(ImageInfo->UserComment);
3832 EFREE_IF(ImageInfo->UserCommentEncoding);
3833 EFREE_IF(ImageInfo->Copyright);
3834 EFREE_IF(ImageInfo->CopyrightPhotographer);
3835 EFREE_IF(ImageInfo->CopyrightEditor);
3836 EFREE_IF(ImageInfo->Thumbnail.data);
3837 EFREE_IF(ImageInfo->encode_unicode);
3838 EFREE_IF(ImageInfo->decode_unicode_be);
3839 EFREE_IF(ImageInfo->decode_unicode_le);
3840 EFREE_IF(ImageInfo->encode_jis);
3841 EFREE_IF(ImageInfo->decode_jis_be);
3842 EFREE_IF(ImageInfo->decode_jis_le);
3843 EFREE_IF(ImageInfo->make);
3844 EFREE_IF(ImageInfo->model);
3845 for (i=0; i<ImageInfo->xp_fields.count; i++) {
3846 EFREE_IF(ImageInfo->xp_fields.list[i].value);
3847 }
3848 EFREE_IF(ImageInfo->xp_fields.list);
3849 for (i=0; i<SECTION_COUNT; i++) {
3850 exif_iif_free(ImageInfo, i);
3851 }
3852 exif_file_sections_free(ImageInfo);
3853 memset(ImageInfo, 0, sizeof(*ImageInfo));
3854 return TRUE;
3855 }
3856 /* }}} */
3857
3858 /* {{{ exif_read_file
3859 */
exif_read_file(image_info_type * ImageInfo,char * FileName,int read_thumbnail,int read_all TSRMLS_DC)3860 static int exif_read_file(image_info_type *ImageInfo, char *FileName, int read_thumbnail, int read_all TSRMLS_DC)
3861 {
3862 int ret;
3863 struct stat st;
3864
3865 /* Start with an empty image information structure. */
3866 memset(ImageInfo, 0, sizeof(*ImageInfo));
3867
3868 ImageInfo->motorola_intel = -1; /* flag as unknown */
3869
3870 ImageInfo->infile = php_stream_open_wrapper(FileName, "rb", STREAM_MUST_SEEK|IGNORE_PATH, NULL);
3871 if (!ImageInfo->infile) {
3872 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Unable to open file");
3873 return FALSE;
3874 }
3875
3876 if (php_stream_is(ImageInfo->infile, PHP_STREAM_IS_STDIO)) {
3877 if (VCWD_STAT(FileName, &st) >= 0) {
3878 if ((st.st_mode & S_IFMT) != S_IFREG) {
3879 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Not a file");
3880 php_stream_close(ImageInfo->infile);
3881 return FALSE;
3882 }
3883
3884 /* Store file date/time. */
3885 ImageInfo->FileDateTime = st.st_mtime;
3886 ImageInfo->FileSize = st.st_size;
3887 /*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Opened stream is file: %d", ImageInfo->FileSize);*/
3888 }
3889 } else {
3890 if (!ImageInfo->FileSize) {
3891 php_stream_seek(ImageInfo->infile, 0, SEEK_END);
3892 ImageInfo->FileSize = php_stream_tell(ImageInfo->infile);
3893 php_stream_seek(ImageInfo->infile, 0, SEEK_SET);
3894 }
3895 }
3896
3897 php_basename(FileName, strlen(FileName), NULL, 0, &(ImageInfo->FileName), NULL TSRMLS_CC);
3898 ImageInfo->read_thumbnail = read_thumbnail;
3899 ImageInfo->read_all = read_all;
3900 ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_UNKNOWN;
3901
3902 ImageInfo->encode_unicode = safe_estrdup(EXIF_G(encode_unicode));
3903 ImageInfo->decode_unicode_be = safe_estrdup(EXIF_G(decode_unicode_be));
3904 ImageInfo->decode_unicode_le = safe_estrdup(EXIF_G(decode_unicode_le));
3905 ImageInfo->encode_jis = safe_estrdup(EXIF_G(encode_jis));
3906 ImageInfo->decode_jis_be = safe_estrdup(EXIF_G(decode_jis_be));
3907 ImageInfo->decode_jis_le = safe_estrdup(EXIF_G(decode_jis_le));
3908
3909
3910 ImageInfo->ifd_nesting_level = 0;
3911
3912 /* Scan the JPEG headers. */
3913 ret = exif_scan_FILE_header(ImageInfo TSRMLS_CC);
3914
3915 php_stream_close(ImageInfo->infile);
3916 return ret;
3917 }
3918 /* }}} */
3919
3920 /* {{{ proto array exif_read_data(string filename [, sections_needed [, sub_arrays[, read_thumbnail]]])
3921 Reads header data from the JPEG/TIFF image filename and optionally reads the internal thumbnails */
PHP_FUNCTION(exif_read_data)3922 PHP_FUNCTION(exif_read_data)
3923 {
3924 char *p_name, *p_sections_needed = NULL;
3925 int p_name_len, p_sections_needed_len = 0;
3926 zend_bool sub_arrays=0, read_thumbnail=0, read_all=0;
3927
3928 int i, ret, sections_needed=0;
3929 image_info_type ImageInfo;
3930 char tmp[64], *sections_str, *s;
3931
3932 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) {
3933 return;
3934 }
3935
3936 memset(&ImageInfo, 0, sizeof(ImageInfo));
3937
3938 if (p_sections_needed) {
3939 spprintf(§ions_str, 0, ",%s,", p_sections_needed);
3940 /* sections_str DOES start with , and SPACES are NOT allowed in names */
3941 s = sections_str;
3942 while (*++s) {
3943 if (*s == ' ') {
3944 *s = ',';
3945 }
3946 }
3947
3948 for (i = 0; i < SECTION_COUNT; i++) {
3949 snprintf(tmp, sizeof(tmp), ",%s,", exif_get_sectionname(i));
3950 if (strstr(sections_str, tmp)) {
3951 sections_needed |= 1<<i;
3952 }
3953 }
3954 EFREE_IF(sections_str);
3955 /* now see what we need */
3956 #ifdef EXIF_DEBUG
3957 sections_str = exif_get_sectionlist(sections_needed TSRMLS_CC);
3958 if (!sections_str) {
3959 RETURN_FALSE;
3960 }
3961 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Sections needed: %s", sections_str[0] ? sections_str : "None");
3962 EFREE_IF(sections_str);
3963 #endif
3964 }
3965
3966 ret = exif_read_file(&ImageInfo, p_name, read_thumbnail, read_all TSRMLS_CC);
3967 sections_str = exif_get_sectionlist(ImageInfo.sections_found TSRMLS_CC);
3968
3969 #ifdef EXIF_DEBUG
3970 if (sections_str)
3971 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Sections found: %s", sections_str[0] ? sections_str : "None");
3972 #endif
3973
3974 ImageInfo.sections_found |= FOUND_COMPUTED|FOUND_FILE;/* do not inform about in debug*/
3975
3976 if (ret == FALSE || (sections_needed && !(sections_needed&ImageInfo.sections_found))) {
3977 /* array_init must be checked at last! otherwise the array must be freed if a later test fails. */
3978 exif_discard_imageinfo(&ImageInfo);
3979 EFREE_IF(sections_str);
3980 RETURN_FALSE;
3981 }
3982
3983 array_init(return_value);
3984
3985 #ifdef EXIF_DEBUG
3986 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Generate section FILE");
3987 #endif
3988
3989 /* now we can add our information */
3990 exif_iif_add_str(&ImageInfo, SECTION_FILE, "FileName", ImageInfo.FileName TSRMLS_CC);
3991 exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileDateTime", ImageInfo.FileDateTime TSRMLS_CC);
3992 exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileSize", ImageInfo.FileSize TSRMLS_CC);
3993 exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileType", ImageInfo.FileType TSRMLS_CC);
3994 exif_iif_add_str(&ImageInfo, SECTION_FILE, "MimeType", (char*)php_image_type_to_mime_type(ImageInfo.FileType) TSRMLS_CC);
3995 exif_iif_add_str(&ImageInfo, SECTION_FILE, "SectionsFound", sections_str ? sections_str : "NONE" TSRMLS_CC);
3996
3997 #ifdef EXIF_DEBUG
3998 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Generate section COMPUTED");
3999 #endif
4000
4001 if (ImageInfo.Width>0 && ImageInfo.Height>0) {
4002 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "html" TSRMLS_CC, "width=\"%d\" height=\"%d\"", ImageInfo.Width, ImageInfo.Height);
4003 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Height", ImageInfo.Height TSRMLS_CC);
4004 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Width", ImageInfo.Width TSRMLS_CC);
4005 }
4006 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "IsColor", ImageInfo.IsColor TSRMLS_CC);
4007 if (ImageInfo.motorola_intel != -1) {
4008 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "ByteOrderMotorola", ImageInfo.motorola_intel TSRMLS_CC);
4009 }
4010 if (ImageInfo.FocalLength) {
4011 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "FocalLength" TSRMLS_CC, "%4.1Fmm", ImageInfo.FocalLength);
4012 if(ImageInfo.CCDWidth) {
4013 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "35mmFocalLength" TSRMLS_CC, "%dmm", (int)(ImageInfo.FocalLength/ImageInfo.CCDWidth*35+0.5));
4014 }
4015 }
4016 if(ImageInfo.CCDWidth) {
4017 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "CCDWidth" TSRMLS_CC, "%dmm", (int)ImageInfo.CCDWidth);
4018 }
4019 if(ImageInfo.ExposureTime>0) {
4020 if(ImageInfo.ExposureTime <= 0.5) {
4021 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ExposureTime" TSRMLS_CC, "%0.3F s (1/%d)", ImageInfo.ExposureTime, (int)(0.5 + 1/ImageInfo.ExposureTime));
4022 } else {
4023 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ExposureTime" TSRMLS_CC, "%0.3F s", ImageInfo.ExposureTime);
4024 }
4025 }
4026 if(ImageInfo.ApertureFNumber) {
4027 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ApertureFNumber" TSRMLS_CC, "f/%.1F", ImageInfo.ApertureFNumber);
4028 }
4029 if(ImageInfo.Distance) {
4030 if(ImageInfo.Distance<0) {
4031 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "FocusDistance", "Infinite" TSRMLS_CC);
4032 } else {
4033 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "FocusDistance" TSRMLS_CC, "%0.2Fm", ImageInfo.Distance);
4034 }
4035 }
4036 if (ImageInfo.UserComment) {
4037 exif_iif_add_buffer(&ImageInfo, SECTION_COMPUTED, "UserComment", ImageInfo.UserCommentLength, ImageInfo.UserComment TSRMLS_CC);
4038 if (ImageInfo.UserCommentEncoding && strlen(ImageInfo.UserCommentEncoding)) {
4039 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "UserCommentEncoding", ImageInfo.UserCommentEncoding TSRMLS_CC);
4040 }
4041 }
4042
4043 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright", ImageInfo.Copyright TSRMLS_CC);
4044 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright.Photographer", ImageInfo.CopyrightPhotographer TSRMLS_CC);
4045 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright.Editor", ImageInfo.CopyrightEditor TSRMLS_CC);
4046
4047 for (i=0; i<ImageInfo.xp_fields.count; i++) {
4048 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);
4049 }
4050 if (ImageInfo.Thumbnail.size) {
4051 if (read_thumbnail) {
4052 /* not exif_iif_add_str : this is a buffer */
4053 exif_iif_add_tag(&ImageInfo, SECTION_THUMBNAIL, "THUMBNAIL", TAG_NONE, TAG_FMT_UNDEFINED, ImageInfo.Thumbnail.size, ImageInfo.Thumbnail.data TSRMLS_CC);
4054 }
4055 if (!ImageInfo.Thumbnail.width || !ImageInfo.Thumbnail.height) {
4056 /* try to evaluate if thumbnail data is present */
4057 exif_scan_thumbnail(&ImageInfo TSRMLS_CC);
4058 }
4059 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.FileType", ImageInfo.Thumbnail.filetype TSRMLS_CC);
4060 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Thumbnail.MimeType", (char*)php_image_type_to_mime_type(ImageInfo.Thumbnail.filetype) TSRMLS_CC);
4061 }
4062 if (ImageInfo.Thumbnail.width && ImageInfo.Thumbnail.height) {
4063 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.Height", ImageInfo.Thumbnail.height TSRMLS_CC);
4064 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.Width", ImageInfo.Thumbnail.width TSRMLS_CC);
4065 }
4066 EFREE_IF(sections_str);
4067
4068 #ifdef EXIF_DEBUG
4069 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Adding image infos");
4070 #endif
4071
4072 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_FILE TSRMLS_CC);
4073 add_assoc_image_info(return_value, 1, &ImageInfo, SECTION_COMPUTED TSRMLS_CC);
4074 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_ANY_TAG TSRMLS_CC);
4075 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_IFD0 TSRMLS_CC);
4076 add_assoc_image_info(return_value, 1, &ImageInfo, SECTION_THUMBNAIL TSRMLS_CC);
4077 add_assoc_image_info(return_value, 1, &ImageInfo, SECTION_COMMENT TSRMLS_CC);
4078 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_EXIF TSRMLS_CC);
4079 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_GPS TSRMLS_CC);
4080 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_INTEROP TSRMLS_CC);
4081 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_FPIX TSRMLS_CC);
4082 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_APP12 TSRMLS_CC);
4083 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_WINXP TSRMLS_CC);
4084 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_MAKERNOTE TSRMLS_CC);
4085
4086 #ifdef EXIF_DEBUG
4087 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Discarding info");
4088 #endif
4089
4090 exif_discard_imageinfo(&ImageInfo);
4091
4092 #ifdef EXIF_DEBUG
4093 php_error_docref1(NULL TSRMLS_CC, Z_STRVAL_PP(p_name), E_NOTICE, "done");
4094 #endif
4095 }
4096 /* }}} */
4097
4098 /* {{{ proto string exif_thumbnail(string filename [, &width, &height [, &imagetype]])
4099 Reads the embedded thumbnail */
PHP_FUNCTION(exif_thumbnail)4100 PHP_FUNCTION(exif_thumbnail)
4101 {
4102 zval *p_width = 0, *p_height = 0, *p_imagetype = 0;
4103 char *p_name;
4104 int p_name_len, ret, arg_c = ZEND_NUM_ARGS();
4105 image_info_type ImageInfo;
4106
4107 memset(&ImageInfo, 0, sizeof(ImageInfo));
4108
4109 if (arg_c!=1 && arg_c!=3 && arg_c!=4) {
4110 WRONG_PARAM_COUNT;
4111 }
4112
4113 if (zend_parse_parameters(arg_c TSRMLS_CC, "p|z/z/z/", &p_name, &p_name_len, &p_width, &p_height, &p_imagetype) == FAILURE) {
4114 return;
4115 }
4116
4117 ret = exif_read_file(&ImageInfo, p_name, 1, 0 TSRMLS_CC);
4118 if (ret==FALSE) {
4119 exif_discard_imageinfo(&ImageInfo);
4120 RETURN_FALSE;
4121 }
4122
4123 #ifdef EXIF_DEBUG
4124 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);
4125 #endif
4126 if (!ImageInfo.Thumbnail.data || !ImageInfo.Thumbnail.size) {
4127 exif_discard_imageinfo(&ImageInfo);
4128 RETURN_FALSE;
4129 }
4130
4131 #ifdef EXIF_DEBUG
4132 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Returning thumbnail(%d)", ImageInfo.Thumbnail.size);
4133 #endif
4134
4135 ZVAL_STRINGL(return_value, ImageInfo.Thumbnail.data, ImageInfo.Thumbnail.size, 1);
4136 if (arg_c >= 3) {
4137 if (!ImageInfo.Thumbnail.width || !ImageInfo.Thumbnail.height) {
4138 exif_scan_thumbnail(&ImageInfo TSRMLS_CC);
4139 }
4140 zval_dtor(p_width);
4141 zval_dtor(p_height);
4142 ZVAL_LONG(p_width, ImageInfo.Thumbnail.width);
4143 ZVAL_LONG(p_height, ImageInfo.Thumbnail.height);
4144 }
4145 if (arg_c >= 4) {
4146 zval_dtor(p_imagetype);
4147 ZVAL_LONG(p_imagetype, ImageInfo.Thumbnail.filetype);
4148 }
4149
4150 #ifdef EXIF_DEBUG
4151 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Discarding info");
4152 #endif
4153
4154 exif_discard_imageinfo(&ImageInfo);
4155
4156 #ifdef EXIF_DEBUG
4157 php_error_docref1(NULL TSRMLS_CC, p_name, E_NOTICE, "Done");
4158 #endif
4159 }
4160 /* }}} */
4161
4162 /* {{{ proto int exif_imagetype(string imagefile)
4163 Get the type of an image */
PHP_FUNCTION(exif_imagetype)4164 PHP_FUNCTION(exif_imagetype)
4165 {
4166 char *imagefile;
4167 int imagefile_len;
4168 php_stream * stream;
4169 int itype = 0;
4170
4171 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &imagefile, &imagefile_len) == FAILURE) {
4172 return;
4173 }
4174
4175 stream = php_stream_open_wrapper(imagefile, "rb", IGNORE_PATH|REPORT_ERRORS, NULL);
4176
4177 if (stream == NULL) {
4178 RETURN_FALSE;
4179 }
4180
4181 itype = php_getimagetype(stream, NULL TSRMLS_CC);
4182
4183 php_stream_close(stream);
4184
4185 if (itype == IMAGE_FILETYPE_UNKNOWN) {
4186 RETURN_FALSE;
4187 } else {
4188 ZVAL_LONG(return_value, itype);
4189 }
4190 }
4191 /* }}} */
4192
4193 #endif
4194
4195 /*
4196 * Local variables:
4197 * tab-width: 4
4198 * c-basic-offset: 4
4199 * End:
4200 * vim600: sw=4 ts=4 tw=78 fdm=marker
4201 * vim<600: sw=4 ts=4 tw=78
4202 */
4203
