1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 7 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2017 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: 6fa60f7a2a20e6daf6b0447f73f279469b26d20f $ */
21
22 /* ToDos
23 *
24 * See if example images from http://www.exif.org have illegal
25 * thumbnail sizes or if code is corrupt.
26 * Create/Update exif headers.
27 * Create/Remove/Update image thumbnails.
28 */
29
30 /* Security
31 *
32 * At current time i do not see any security problems but a potential
33 * attacker could generate an image with recursive ifd pointers...(Marcus)
34 */
35
36 #ifdef HAVE_CONFIG_H
37 #include "config.h"
38 #endif
39
40 #include "php.h"
41 #include "ext/standard/file.h"
42
43 #if HAVE_EXIF
44
45 /* When EXIF_DEBUG is defined the module generates a lot of debug messages
46 * that help understanding what is going on. This can and should be used
47 * while extending the module as it shows if you are at the right position.
48 * You are always considered to have a copy of TIFF6.0 and EXIF2.10 standard.
49 */
50 #undef EXIF_DEBUG
51
52 #ifdef EXIF_DEBUG
53 #define EXIFERR_DC , const char *_file, size_t _line
54 #define EXIFERR_CC , __FILE__, __LINE__
55 #else
56 #define EXIFERR_DC
57 #define EXIFERR_CC
58 #endif
59
60 #undef EXIF_JPEG2000
61
62 #include "php_exif.h"
63 #include <math.h>
64 #include "php_ini.h"
65 #include "ext/standard/php_string.h"
66 #include "ext/standard/php_image.h"
67 #include "ext/standard/info.h"
68
69 /* needed for ssize_t definition */
70 #include <sys/types.h>
71
72 typedef unsigned char uchar;
73
74 #ifndef safe_emalloc
75 # define safe_emalloc(a,b,c) emalloc((a)*(b)+(c))
76 #endif
77 #ifndef safe_erealloc
78 # define safe_erealloc(p,a,b,c) erealloc(p, (a)*(b)+(c))
79 #endif
80
81 #ifndef TRUE
82 # define TRUE 1
83 # define FALSE 0
84 #endif
85
86 #ifndef max
87 # define max(a,b) ((a)>(b) ? (a) : (b))
88 #endif
89
90 #define EFREE_IF(ptr) if (ptr) efree(ptr)
91
92 #define MAX_IFD_NESTING_LEVEL 100
93
94 /* {{{ arginfo */
95 ZEND_BEGIN_ARG_INFO(arginfo_exif_tagname, 0)
96 ZEND_ARG_INFO(0, index)
97 ZEND_END_ARG_INFO()
98
99 ZEND_BEGIN_ARG_INFO_EX(arginfo_exif_read_data, 0, 0, 1)
100 ZEND_ARG_INFO(0, filename)
101 ZEND_ARG_INFO(0, sections_needed)
102 ZEND_ARG_INFO(0, sub_arrays)
103 ZEND_ARG_INFO(0, read_thumbnail)
104 ZEND_END_ARG_INFO()
105
106 ZEND_BEGIN_ARG_INFO_EX(arginfo_exif_thumbnail, 0, 0, 1)
107 ZEND_ARG_INFO(0, filename)
108 ZEND_ARG_INFO(1, width)
109 ZEND_ARG_INFO(1, height)
110 ZEND_ARG_INFO(1, imagetype)
111 ZEND_END_ARG_INFO()
112
113 ZEND_BEGIN_ARG_INFO(arginfo_exif_imagetype, 0)
114 ZEND_ARG_INFO(0, imagefile)
115 ZEND_END_ARG_INFO()
116
117 /* }}} */
118
119 /* {{{ exif_functions[]
120 */
121 const zend_function_entry exif_functions[] = {
122 PHP_FE(exif_read_data, arginfo_exif_read_data)
123 PHP_FALIAS(read_exif_data, exif_read_data, arginfo_exif_read_data)
124 PHP_FE(exif_tagname, arginfo_exif_tagname)
125 PHP_FE(exif_thumbnail, arginfo_exif_thumbnail)
126 PHP_FE(exif_imagetype, arginfo_exif_imagetype)
127 PHP_FE_END
128 };
129 /* }}} */
130
131 /* {{{ PHP_MINFO_FUNCTION
132 */
PHP_MINFO_FUNCTION(exif)133 PHP_MINFO_FUNCTION(exif)
134 {
135 php_info_print_table_start();
136 php_info_print_table_row(2, "EXIF Support", "enabled");
137 php_info_print_table_row(2, "EXIF Version", PHP_EXIF_VERSION);
138 php_info_print_table_row(2, "Supported EXIF Version", "0220");
139 php_info_print_table_row(2, "Supported filetypes", "JPEG,TIFF");
140 php_info_print_table_end();
141 DISPLAY_INI_ENTRIES();
142 }
143 /* }}} */
144
145 ZEND_BEGIN_MODULE_GLOBALS(exif)
146 char * encode_unicode;
147 char * decode_unicode_be;
148 char * decode_unicode_le;
149 char * encode_jis;
150 char * decode_jis_be;
151 char * decode_jis_le;
152 ZEND_END_MODULE_GLOBALS(exif)
153
ZEND_DECLARE_MODULE_GLOBALS(exif)154 ZEND_DECLARE_MODULE_GLOBALS(exif)
155 #define EXIF_G(v) ZEND_MODULE_GLOBALS_ACCESSOR(exif, v)
156
157 #if defined(ZTS) && defined(COMPILE_DL_EXIF)
158 ZEND_TSRMLS_CACHE_DEFINE()
159 #endif
160
161 /* {{{ PHP_INI
162 */
163
164 ZEND_INI_MH(OnUpdateEncode)
165 {
166 if (new_value && ZSTR_LEN(new_value)) {
167 const zend_encoding **return_list;
168 size_t return_size;
169 if (FAILURE == zend_multibyte_parse_encoding_list(ZSTR_VAL(new_value), ZSTR_LEN(new_value),
170 &return_list, &return_size, 0)) {
171 php_error_docref(NULL, E_WARNING, "Illegal encoding ignored: '%s'", ZSTR_VAL(new_value));
172 return FAILURE;
173 }
174 efree(return_list);
175 }
176 return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
177 }
178
ZEND_INI_MH(OnUpdateDecode)179 ZEND_INI_MH(OnUpdateDecode)
180 {
181 if (new_value) {
182 const zend_encoding **return_list;
183 size_t return_size;
184 if (FAILURE == zend_multibyte_parse_encoding_list(ZSTR_VAL(new_value), ZSTR_LEN(new_value),
185 &return_list, &return_size, 0)) {
186 php_error_docref(NULL, E_WARNING, "Illegal encoding ignored: '%s'", ZSTR_VAL(new_value));
187 return FAILURE;
188 }
189 efree(return_list);
190 }
191 return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
192 }
193
194 PHP_INI_BEGIN()
195 STD_PHP_INI_ENTRY("exif.encode_unicode", "ISO-8859-15", PHP_INI_ALL, OnUpdateEncode, encode_unicode, zend_exif_globals, exif_globals)
196 STD_PHP_INI_ENTRY("exif.decode_unicode_motorola", "UCS-2BE", PHP_INI_ALL, OnUpdateDecode, decode_unicode_be, zend_exif_globals, exif_globals)
197 STD_PHP_INI_ENTRY("exif.decode_unicode_intel", "UCS-2LE", PHP_INI_ALL, OnUpdateDecode, decode_unicode_le, zend_exif_globals, exif_globals)
198 STD_PHP_INI_ENTRY("exif.encode_jis", "", PHP_INI_ALL, OnUpdateEncode, encode_jis, zend_exif_globals, exif_globals)
199 STD_PHP_INI_ENTRY("exif.decode_jis_motorola", "JIS", PHP_INI_ALL, OnUpdateDecode, decode_jis_be, zend_exif_globals, exif_globals)
200 STD_PHP_INI_ENTRY("exif.decode_jis_intel", "JIS", PHP_INI_ALL, OnUpdateDecode, decode_jis_le, zend_exif_globals, exif_globals)
PHP_INI_END()201 PHP_INI_END()
202 /* }}} */
203
204 /* {{{ PHP_GINIT_FUNCTION
205 */
206 static PHP_GINIT_FUNCTION(exif)
207 {
208 #if defined(COMPILE_DL_EXIF) && defined(ZTS)
209 ZEND_TSRMLS_CACHE_UPDATE();
210 #endif
211 exif_globals->encode_unicode = NULL;
212 exif_globals->decode_unicode_be = NULL;
213 exif_globals->decode_unicode_le = NULL;
214 exif_globals->encode_jis = NULL;
215 exif_globals->decode_jis_be = NULL;
216 exif_globals->decode_jis_le = NULL;
217 }
218 /* }}} */
219
220 /* {{{ PHP_MINIT_FUNCTION(exif)
221 Get the size of an image as 4-element array */
PHP_MINIT_FUNCTION(exif)222 PHP_MINIT_FUNCTION(exif)
223 {
224 REGISTER_INI_ENTRIES();
225 if (zend_hash_str_exists(&module_registry, "mbstring", sizeof("mbstring")-1)) {
226 REGISTER_LONG_CONSTANT("EXIF_USE_MBSTRING", 1, CONST_CS | CONST_PERSISTENT);
227 } else {
228 REGISTER_LONG_CONSTANT("EXIF_USE_MBSTRING", 0, CONST_CS | CONST_PERSISTENT);
229 }
230 return SUCCESS;
231 }
232 /* }}} */
233
234 /* {{{ PHP_MSHUTDOWN_FUNCTION
235 */
PHP_MSHUTDOWN_FUNCTION(exif)236 PHP_MSHUTDOWN_FUNCTION(exif)
237 {
238 UNREGISTER_INI_ENTRIES();
239 return SUCCESS;
240 }
241 /* }}} */
242
243 /* {{{ exif dependencies */
244 static const zend_module_dep exif_module_deps[] = {
245 ZEND_MOD_REQUIRED("standard")
246 ZEND_MOD_OPTIONAL("mbstring")
247 ZEND_MOD_END
248 };
249 /* }}} */
250
251 /* {{{ exif_module_entry
252 */
253 zend_module_entry exif_module_entry = {
254 STANDARD_MODULE_HEADER_EX, NULL,
255 exif_module_deps,
256 "exif",
257 exif_functions,
258 PHP_MINIT(exif),
259 PHP_MSHUTDOWN(exif),
260 NULL, NULL,
261 PHP_MINFO(exif),
262 PHP_EXIF_VERSION,
263 PHP_MODULE_GLOBALS(exif),
264 PHP_GINIT(exif),
265 NULL,
266 NULL,
267 STANDARD_MODULE_PROPERTIES_EX
268 };
269 /* }}} */
270
271 #ifdef COMPILE_DL_EXIF
ZEND_GET_MODULE(exif)272 ZEND_GET_MODULE(exif)
273 #endif
274
275 /* {{{ php_strnlen
276 * get length of string if buffer if less than buffer size or buffer size */
277 static size_t php_strnlen(char* str, size_t maxlen) {
278 size_t len = 0;
279
280 if (str && maxlen && *str) {
281 do {
282 len++;
283 } while (--maxlen && *(++str));
284 }
285 return len;
286 }
287 /* }}} */
288
289 /* {{{ error messages
290 */
291 static const char * EXIF_ERROR_FILEEOF = "Unexpected end of file reached";
292 static const char * EXIF_ERROR_CORRUPT = "File structure corrupted";
293 static const char * EXIF_ERROR_THUMBEOF = "Thumbnail goes IFD boundary or end of file reached";
294 static const char * EXIF_ERROR_FSREALLOC = "Illegal reallocating of undefined file section";
295
296 #define EXIF_ERRLOG_FILEEOF(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_FILEEOF);
297 #define EXIF_ERRLOG_CORRUPT(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_CORRUPT);
298 #define EXIF_ERRLOG_THUMBEOF(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_THUMBEOF);
299 #define EXIF_ERRLOG_FSREALLOC(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_FSREALLOC);
300 /* }}} */
301
302 /* {{{ format description defines
303 Describes format descriptor
304 */
305 static int php_tiff_bytes_per_format[] = {0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8, 1};
306 #define NUM_FORMATS 13
307
308 #define TAG_FMT_BYTE 1
309 #define TAG_FMT_STRING 2
310 #define TAG_FMT_USHORT 3
311 #define TAG_FMT_ULONG 4
312 #define TAG_FMT_URATIONAL 5
313 #define TAG_FMT_SBYTE 6
314 #define TAG_FMT_UNDEFINED 7
315 #define TAG_FMT_SSHORT 8
316 #define TAG_FMT_SLONG 9
317 #define TAG_FMT_SRATIONAL 10
318 #define TAG_FMT_SINGLE 11
319 #define TAG_FMT_DOUBLE 12
320 #define TAG_FMT_IFD 13
321
322 #ifdef EXIF_DEBUG
exif_get_tagformat(int format)323 static char *exif_get_tagformat(int format)
324 {
325 switch(format) {
326 case TAG_FMT_BYTE: return "BYTE";
327 case TAG_FMT_STRING: return "STRING";
328 case TAG_FMT_USHORT: return "USHORT";
329 case TAG_FMT_ULONG: return "ULONG";
330 case TAG_FMT_URATIONAL: return "URATIONAL";
331 case TAG_FMT_SBYTE: return "SBYTE";
332 case TAG_FMT_UNDEFINED: return "UNDEFINED";
333 case TAG_FMT_SSHORT: return "SSHORT";
334 case TAG_FMT_SLONG: return "SLONG";
335 case TAG_FMT_SRATIONAL: return "SRATIONAL";
336 case TAG_FMT_SINGLE: return "SINGLE";
337 case TAG_FMT_DOUBLE: return "DOUBLE";
338 case TAG_FMT_IFD: return "IFD";
339 }
340 return "*Illegal";
341 }
342 #endif
343
344 /* Describes tag values */
345 #define TAG_GPS_VERSION_ID 0x0000
346 #define TAG_GPS_LATITUDE_REF 0x0001
347 #define TAG_GPS_LATITUDE 0x0002
348 #define TAG_GPS_LONGITUDE_REF 0x0003
349 #define TAG_GPS_LONGITUDE 0x0004
350 #define TAG_GPS_ALTITUDE_REF 0x0005
351 #define TAG_GPS_ALTITUDE 0x0006
352 #define TAG_GPS_TIME_STAMP 0x0007
353 #define TAG_GPS_SATELLITES 0x0008
354 #define TAG_GPS_STATUS 0x0009
355 #define TAG_GPS_MEASURE_MODE 0x000A
356 #define TAG_GPS_DOP 0x000B
357 #define TAG_GPS_SPEED_REF 0x000C
358 #define TAG_GPS_SPEED 0x000D
359 #define TAG_GPS_TRACK_REF 0x000E
360 #define TAG_GPS_TRACK 0x000F
361 #define TAG_GPS_IMG_DIRECTION_REF 0x0010
362 #define TAG_GPS_IMG_DIRECTION 0x0011
363 #define TAG_GPS_MAP_DATUM 0x0012
364 #define TAG_GPS_DEST_LATITUDE_REF 0x0013
365 #define TAG_GPS_DEST_LATITUDE 0x0014
366 #define TAG_GPS_DEST_LONGITUDE_REF 0x0015
367 #define TAG_GPS_DEST_LONGITUDE 0x0016
368 #define TAG_GPS_DEST_BEARING_REF 0x0017
369 #define TAG_GPS_DEST_BEARING 0x0018
370 #define TAG_GPS_DEST_DISTANCE_REF 0x0019
371 #define TAG_GPS_DEST_DISTANCE 0x001A
372 #define TAG_GPS_PROCESSING_METHOD 0x001B
373 #define TAG_GPS_AREA_INFORMATION 0x001C
374 #define TAG_GPS_DATE_STAMP 0x001D
375 #define TAG_GPS_DIFFERENTIAL 0x001E
376 #define TAG_TIFF_COMMENT 0x00FE /* SHOUDLNT HAPPEN */
377 #define TAG_NEW_SUBFILE 0x00FE /* New version of subfile tag */
378 #define TAG_SUBFILE_TYPE 0x00FF /* Old version of subfile tag */
379 #define TAG_IMAGEWIDTH 0x0100
380 #define TAG_IMAGEHEIGHT 0x0101
381 #define TAG_BITS_PER_SAMPLE 0x0102
382 #define TAG_COMPRESSION 0x0103
383 #define TAG_PHOTOMETRIC_INTERPRETATION 0x0106
384 #define TAG_TRESHHOLDING 0x0107
385 #define TAG_CELL_WIDTH 0x0108
386 #define TAG_CELL_HEIGHT 0x0109
387 #define TAG_FILL_ORDER 0x010A
388 #define TAG_DOCUMENT_NAME 0x010D
389 #define TAG_IMAGE_DESCRIPTION 0x010E
390 #define TAG_MAKE 0x010F
391 #define TAG_MODEL 0x0110
392 #define TAG_STRIP_OFFSETS 0x0111
393 #define TAG_ORIENTATION 0x0112
394 #define TAG_SAMPLES_PER_PIXEL 0x0115
395 #define TAG_ROWS_PER_STRIP 0x0116
396 #define TAG_STRIP_BYTE_COUNTS 0x0117
397 #define TAG_MIN_SAMPPLE_VALUE 0x0118
398 #define TAG_MAX_SAMPLE_VALUE 0x0119
399 #define TAG_X_RESOLUTION 0x011A
400 #define TAG_Y_RESOLUTION 0x011B
401 #define TAG_PLANAR_CONFIGURATION 0x011C
402 #define TAG_PAGE_NAME 0x011D
403 #define TAG_X_POSITION 0x011E
404 #define TAG_Y_POSITION 0x011F
405 #define TAG_FREE_OFFSETS 0x0120
406 #define TAG_FREE_BYTE_COUNTS 0x0121
407 #define TAG_GRAY_RESPONSE_UNIT 0x0122
408 #define TAG_GRAY_RESPONSE_CURVE 0x0123
409 #define TAG_RESOLUTION_UNIT 0x0128
410 #define TAG_PAGE_NUMBER 0x0129
411 #define TAG_TRANSFER_FUNCTION 0x012D
412 #define TAG_SOFTWARE 0x0131
413 #define TAG_DATETIME 0x0132
414 #define TAG_ARTIST 0x013B
415 #define TAG_HOST_COMPUTER 0x013C
416 #define TAG_PREDICTOR 0x013D
417 #define TAG_WHITE_POINT 0x013E
418 #define TAG_PRIMARY_CHROMATICITIES 0x013F
419 #define TAG_COLOR_MAP 0x0140
420 #define TAG_HALFTONE_HINTS 0x0141
421 #define TAG_TILE_WIDTH 0x0142
422 #define TAG_TILE_LENGTH 0x0143
423 #define TAG_TILE_OFFSETS 0x0144
424 #define TAG_TILE_BYTE_COUNTS 0x0145
425 #define TAG_SUB_IFD 0x014A
426 #define TAG_INK_SETMPUTER 0x014C
427 #define TAG_INK_NAMES 0x014D
428 #define TAG_NUMBER_OF_INKS 0x014E
429 #define TAG_DOT_RANGE 0x0150
430 #define TAG_TARGET_PRINTER 0x0151
431 #define TAG_EXTRA_SAMPLE 0x0152
432 #define TAG_SAMPLE_FORMAT 0x0153
433 #define TAG_S_MIN_SAMPLE_VALUE 0x0154
434 #define TAG_S_MAX_SAMPLE_VALUE 0x0155
435 #define TAG_TRANSFER_RANGE 0x0156
436 #define TAG_JPEG_TABLES 0x015B
437 #define TAG_JPEG_PROC 0x0200
438 #define TAG_JPEG_INTERCHANGE_FORMAT 0x0201
439 #define TAG_JPEG_INTERCHANGE_FORMAT_LEN 0x0202
440 #define TAG_JPEG_RESTART_INTERVAL 0x0203
441 #define TAG_JPEG_LOSSLESS_PREDICTOR 0x0205
442 #define TAG_JPEG_POINT_TRANSFORMS 0x0206
443 #define TAG_JPEG_Q_TABLES 0x0207
444 #define TAG_JPEG_DC_TABLES 0x0208
445 #define TAG_JPEG_AC_TABLES 0x0209
446 #define TAG_YCC_COEFFICIENTS 0x0211
447 #define TAG_YCC_SUB_SAMPLING 0x0212
448 #define TAG_YCC_POSITIONING 0x0213
449 #define TAG_REFERENCE_BLACK_WHITE 0x0214
450 /* 0x0301 - 0x0302 */
451 /* 0x0320 */
452 /* 0x0343 */
453 /* 0x5001 - 0x501B */
454 /* 0x5021 - 0x503B */
455 /* 0x5090 - 0x5091 */
456 /* 0x5100 - 0x5101 */
457 /* 0x5110 - 0x5113 */
458 /* 0x80E3 - 0x80E6 */
459 /* 0x828d - 0x828F */
460 #define TAG_COPYRIGHT 0x8298
461 #define TAG_EXPOSURETIME 0x829A
462 #define TAG_FNUMBER 0x829D
463 #define TAG_EXIF_IFD_POINTER 0x8769
464 #define TAG_ICC_PROFILE 0x8773
465 #define TAG_EXPOSURE_PROGRAM 0x8822
466 #define TAG_SPECTRAL_SENSITY 0x8824
467 #define TAG_GPS_IFD_POINTER 0x8825
468 #define TAG_ISOSPEED 0x8827
469 #define TAG_OPTOELECTRIC_CONVERSION_F 0x8828
470 /* 0x8829 - 0x882b */
471 #define TAG_EXIFVERSION 0x9000
472 #define TAG_DATE_TIME_ORIGINAL 0x9003
473 #define TAG_DATE_TIME_DIGITIZED 0x9004
474 #define TAG_COMPONENT_CONFIG 0x9101
475 #define TAG_COMPRESSED_BITS_PER_PIXEL 0x9102
476 #define TAG_SHUTTERSPEED 0x9201
477 #define TAG_APERTURE 0x9202
478 #define TAG_BRIGHTNESS_VALUE 0x9203
479 #define TAG_EXPOSURE_BIAS_VALUE 0x9204
480 #define TAG_MAX_APERTURE 0x9205
481 #define TAG_SUBJECT_DISTANCE 0x9206
482 #define TAG_METRIC_MODULE 0x9207
483 #define TAG_LIGHT_SOURCE 0x9208
484 #define TAG_FLASH 0x9209
485 #define TAG_FOCAL_LENGTH 0x920A
486 /* 0x920B - 0x920D */
487 /* 0x9211 - 0x9216 */
488 #define TAG_SUBJECT_AREA 0x9214
489 #define TAG_MAKER_NOTE 0x927C
490 #define TAG_USERCOMMENT 0x9286
491 #define TAG_SUB_SEC_TIME 0x9290
492 #define TAG_SUB_SEC_TIME_ORIGINAL 0x9291
493 #define TAG_SUB_SEC_TIME_DIGITIZED 0x9292
494 /* 0x923F */
495 /* 0x935C */
496 #define TAG_XP_TITLE 0x9C9B
497 #define TAG_XP_COMMENTS 0x9C9C
498 #define TAG_XP_AUTHOR 0x9C9D
499 #define TAG_XP_KEYWORDS 0x9C9E
500 #define TAG_XP_SUBJECT 0x9C9F
501 #define TAG_FLASH_PIX_VERSION 0xA000
502 #define TAG_COLOR_SPACE 0xA001
503 #define TAG_COMP_IMAGE_WIDTH 0xA002 /* compressed images only */
504 #define TAG_COMP_IMAGE_HEIGHT 0xA003
505 #define TAG_RELATED_SOUND_FILE 0xA004
506 #define TAG_INTEROP_IFD_POINTER 0xA005 /* IFD pointer */
507 #define TAG_FLASH_ENERGY 0xA20B
508 #define TAG_SPATIAL_FREQUENCY_RESPONSE 0xA20C
509 #define TAG_FOCALPLANE_X_RES 0xA20E
510 #define TAG_FOCALPLANE_Y_RES 0xA20F
511 #define TAG_FOCALPLANE_RESOLUTION_UNIT 0xA210
512 #define TAG_SUBJECT_LOCATION 0xA214
513 #define TAG_EXPOSURE_INDEX 0xA215
514 #define TAG_SENSING_METHOD 0xA217
515 #define TAG_FILE_SOURCE 0xA300
516 #define TAG_SCENE_TYPE 0xA301
517 #define TAG_CFA_PATTERN 0xA302
518 #define TAG_CUSTOM_RENDERED 0xA401
519 #define TAG_EXPOSURE_MODE 0xA402
520 #define TAG_WHITE_BALANCE 0xA403
521 #define TAG_DIGITAL_ZOOM_RATIO 0xA404
522 #define TAG_FOCAL_LENGTH_IN_35_MM_FILM 0xA405
523 #define TAG_SCENE_CAPTURE_TYPE 0xA406
524 #define TAG_GAIN_CONTROL 0xA407
525 #define TAG_CONTRAST 0xA408
526 #define TAG_SATURATION 0xA409
527 #define TAG_SHARPNESS 0xA40A
528 #define TAG_DEVICE_SETTING_DESCRIPTION 0xA40B
529 #define TAG_SUBJECT_DISTANCE_RANGE 0xA40C
530 #define TAG_IMAGE_UNIQUE_ID 0xA420
531
532 /* Olympus specific tags */
533 #define TAG_OLYMPUS_SPECIALMODE 0x0200
534 #define TAG_OLYMPUS_JPEGQUAL 0x0201
535 #define TAG_OLYMPUS_MACRO 0x0202
536 #define TAG_OLYMPUS_DIGIZOOM 0x0204
537 #define TAG_OLYMPUS_SOFTWARERELEASE 0x0207
538 #define TAG_OLYMPUS_PICTINFO 0x0208
539 #define TAG_OLYMPUS_CAMERAID 0x0209
540 /* end Olympus specific tags */
541
542 /* Internal */
543 #define TAG_NONE -1 /* note that -1 <> 0xFFFF */
544 #define TAG_COMPUTED_VALUE -2
545 #define TAG_END_OF_LIST 0xFFFD
546
547 /* Values for TAG_PHOTOMETRIC_INTERPRETATION */
548 #define PMI_BLACK_IS_ZERO 0
549 #define PMI_WHITE_IS_ZERO 1
550 #define PMI_RGB 2
551 #define PMI_PALETTE_COLOR 3
552 #define PMI_TRANSPARENCY_MASK 4
553 #define PMI_SEPARATED 5
554 #define PMI_YCBCR 6
555 #define PMI_CIELAB 8
556
557 /* }}} */
558
559 /* {{{ TabTable[]
560 */
561 typedef const struct {
562 unsigned short Tag;
563 char *Desc;
564 } tag_info_type;
565
566 typedef tag_info_type tag_info_array[];
567 typedef tag_info_type *tag_table_type;
568
569 #define TAG_TABLE_END \
570 {TAG_NONE, "No tag value"},\
571 {TAG_COMPUTED_VALUE, "Computed value"},\
572 {TAG_END_OF_LIST, ""} /* Important for exif_get_tagname() IF value != "" function result is != false */
573
574 static tag_info_array tag_table_IFD = {
575 { 0x000B, "ACDComment"},
576 { 0x00FE, "NewSubFile"}, /* better name it 'ImageType' ? */
577 { 0x00FF, "SubFile"},
578 { 0x0100, "ImageWidth"},
579 { 0x0101, "ImageLength"},
580 { 0x0102, "BitsPerSample"},
581 { 0x0103, "Compression"},
582 { 0x0106, "PhotometricInterpretation"},
583 { 0x010A, "FillOrder"},
584 { 0x010D, "DocumentName"},
585 { 0x010E, "ImageDescription"},
586 { 0x010F, "Make"},
587 { 0x0110, "Model"},
588 { 0x0111, "StripOffsets"},
589 { 0x0112, "Orientation"},
590 { 0x0115, "SamplesPerPixel"},
591 { 0x0116, "RowsPerStrip"},
592 { 0x0117, "StripByteCounts"},
593 { 0x0118, "MinSampleValue"},
594 { 0x0119, "MaxSampleValue"},
595 { 0x011A, "XResolution"},
596 { 0x011B, "YResolution"},
597 { 0x011C, "PlanarConfiguration"},
598 { 0x011D, "PageName"},
599 { 0x011E, "XPosition"},
600 { 0x011F, "YPosition"},
601 { 0x0120, "FreeOffsets"},
602 { 0x0121, "FreeByteCounts"},
603 { 0x0122, "GrayResponseUnit"},
604 { 0x0123, "GrayResponseCurve"},
605 { 0x0124, "T4Options"},
606 { 0x0125, "T6Options"},
607 { 0x0128, "ResolutionUnit"},
608 { 0x0129, "PageNumber"},
609 { 0x012D, "TransferFunction"},
610 { 0x0131, "Software"},
611 { 0x0132, "DateTime"},
612 { 0x013B, "Artist"},
613 { 0x013C, "HostComputer"},
614 { 0x013D, "Predictor"},
615 { 0x013E, "WhitePoint"},
616 { 0x013F, "PrimaryChromaticities"},
617 { 0x0140, "ColorMap"},
618 { 0x0141, "HalfToneHints"},
619 { 0x0142, "TileWidth"},
620 { 0x0143, "TileLength"},
621 { 0x0144, "TileOffsets"},
622 { 0x0145, "TileByteCounts"},
623 { 0x014A, "SubIFD"},
624 { 0x014C, "InkSet"},
625 { 0x014D, "InkNames"},
626 { 0x014E, "NumberOfInks"},
627 { 0x0150, "DotRange"},
628 { 0x0151, "TargetPrinter"},
629 { 0x0152, "ExtraSample"},
630 { 0x0153, "SampleFormat"},
631 { 0x0154, "SMinSampleValue"},
632 { 0x0155, "SMaxSampleValue"},
633 { 0x0156, "TransferRange"},
634 { 0x0157, "ClipPath"},
635 { 0x0158, "XClipPathUnits"},
636 { 0x0159, "YClipPathUnits"},
637 { 0x015A, "Indexed"},
638 { 0x015B, "JPEGTables"},
639 { 0x015F, "OPIProxy"},
640 { 0x0200, "JPEGProc"},
641 { 0x0201, "JPEGInterchangeFormat"},
642 { 0x0202, "JPEGInterchangeFormatLength"},
643 { 0x0203, "JPEGRestartInterval"},
644 { 0x0205, "JPEGLosslessPredictors"},
645 { 0x0206, "JPEGPointTransforms"},
646 { 0x0207, "JPEGQTables"},
647 { 0x0208, "JPEGDCTables"},
648 { 0x0209, "JPEGACTables"},
649 { 0x0211, "YCbCrCoefficients"},
650 { 0x0212, "YCbCrSubSampling"},
651 { 0x0213, "YCbCrPositioning"},
652 { 0x0214, "ReferenceBlackWhite"},
653 { 0x02BC, "ExtensibleMetadataPlatform"}, /* XAP: Extensible Authoring Publishing, obsoleted by XMP: Extensible Metadata Platform */
654 { 0x0301, "Gamma"},
655 { 0x0302, "ICCProfileDescriptor"},
656 { 0x0303, "SRGBRenderingIntent"},
657 { 0x0320, "ImageTitle"},
658 { 0x5001, "ResolutionXUnit"},
659 { 0x5002, "ResolutionYUnit"},
660 { 0x5003, "ResolutionXLengthUnit"},
661 { 0x5004, "ResolutionYLengthUnit"},
662 { 0x5005, "PrintFlags"},
663 { 0x5006, "PrintFlagsVersion"},
664 { 0x5007, "PrintFlagsCrop"},
665 { 0x5008, "PrintFlagsBleedWidth"},
666 { 0x5009, "PrintFlagsBleedWidthScale"},
667 { 0x500A, "HalftoneLPI"},
668 { 0x500B, "HalftoneLPIUnit"},
669 { 0x500C, "HalftoneDegree"},
670 { 0x500D, "HalftoneShape"},
671 { 0x500E, "HalftoneMisc"},
672 { 0x500F, "HalftoneScreen"},
673 { 0x5010, "JPEGQuality"},
674 { 0x5011, "GridSize"},
675 { 0x5012, "ThumbnailFormat"},
676 { 0x5013, "ThumbnailWidth"},
677 { 0x5014, "ThumbnailHeight"},
678 { 0x5015, "ThumbnailColorDepth"},
679 { 0x5016, "ThumbnailPlanes"},
680 { 0x5017, "ThumbnailRawBytes"},
681 { 0x5018, "ThumbnailSize"},
682 { 0x5019, "ThumbnailCompressedSize"},
683 { 0x501A, "ColorTransferFunction"},
684 { 0x501B, "ThumbnailData"},
685 { 0x5020, "ThumbnailImageWidth"},
686 { 0x5021, "ThumbnailImageHeight"},
687 { 0x5022, "ThumbnailBitsPerSample"},
688 { 0x5023, "ThumbnailCompression"},
689 { 0x5024, "ThumbnailPhotometricInterp"},
690 { 0x5025, "ThumbnailImageDescription"},
691 { 0x5026, "ThumbnailEquipMake"},
692 { 0x5027, "ThumbnailEquipModel"},
693 { 0x5028, "ThumbnailStripOffsets"},
694 { 0x5029, "ThumbnailOrientation"},
695 { 0x502A, "ThumbnailSamplesPerPixel"},
696 { 0x502B, "ThumbnailRowsPerStrip"},
697 { 0x502C, "ThumbnailStripBytesCount"},
698 { 0x502D, "ThumbnailResolutionX"},
699 { 0x502E, "ThumbnailResolutionY"},
700 { 0x502F, "ThumbnailPlanarConfig"},
701 { 0x5030, "ThumbnailResolutionUnit"},
702 { 0x5031, "ThumbnailTransferFunction"},
703 { 0x5032, "ThumbnailSoftwareUsed"},
704 { 0x5033, "ThumbnailDateTime"},
705 { 0x5034, "ThumbnailArtist"},
706 { 0x5035, "ThumbnailWhitePoint"},
707 { 0x5036, "ThumbnailPrimaryChromaticities"},
708 { 0x5037, "ThumbnailYCbCrCoefficients"},
709 { 0x5038, "ThumbnailYCbCrSubsampling"},
710 { 0x5039, "ThumbnailYCbCrPositioning"},
711 { 0x503A, "ThumbnailRefBlackWhite"},
712 { 0x503B, "ThumbnailCopyRight"},
713 { 0x5090, "LuminanceTable"},
714 { 0x5091, "ChrominanceTable"},
715 { 0x5100, "FrameDelay"},
716 { 0x5101, "LoopCount"},
717 { 0x5110, "PixelUnit"},
718 { 0x5111, "PixelPerUnitX"},
719 { 0x5112, "PixelPerUnitY"},
720 { 0x5113, "PaletteHistogram"},
721 { 0x1000, "RelatedImageFileFormat"},
722 { 0x800D, "ImageID"},
723 { 0x80E3, "Matteing"}, /* obsoleted by ExtraSamples */
724 { 0x80E4, "DataType"}, /* obsoleted by SampleFormat */
725 { 0x80E5, "ImageDepth"},
726 { 0x80E6, "TileDepth"},
727 { 0x828D, "CFARepeatPatternDim"},
728 { 0x828E, "CFAPattern"},
729 { 0x828F, "BatteryLevel"},
730 { 0x8298, "Copyright"},
731 { 0x829A, "ExposureTime"},
732 { 0x829D, "FNumber"},
733 { 0x83BB, "IPTC/NAA"},
734 { 0x84E3, "IT8RasterPadding"},
735 { 0x84E5, "IT8ColorTable"},
736 { 0x8649, "ImageResourceInformation"}, /* PhotoShop */
737 { 0x8769, "Exif_IFD_Pointer"},
738 { 0x8773, "ICC_Profile"},
739 { 0x8822, "ExposureProgram"},
740 { 0x8824, "SpectralSensity"},
741 { 0x8828, "OECF"},
742 { 0x8825, "GPS_IFD_Pointer"},
743 { 0x8827, "ISOSpeedRatings"},
744 { 0x8828, "OECF"},
745 { 0x9000, "ExifVersion"},
746 { 0x9003, "DateTimeOriginal"},
747 { 0x9004, "DateTimeDigitized"},
748 { 0x9101, "ComponentsConfiguration"},
749 { 0x9102, "CompressedBitsPerPixel"},
750 { 0x9201, "ShutterSpeedValue"},
751 { 0x9202, "ApertureValue"},
752 { 0x9203, "BrightnessValue"},
753 { 0x9204, "ExposureBiasValue"},
754 { 0x9205, "MaxApertureValue"},
755 { 0x9206, "SubjectDistance"},
756 { 0x9207, "MeteringMode"},
757 { 0x9208, "LightSource"},
758 { 0x9209, "Flash"},
759 { 0x920A, "FocalLength"},
760 { 0x920B, "FlashEnergy"}, /* 0xA20B in JPEG */
761 { 0x920C, "SpatialFrequencyResponse"}, /* 0xA20C - - */
762 { 0x920D, "Noise"},
763 { 0x920E, "FocalPlaneXResolution"}, /* 0xA20E - - */
764 { 0x920F, "FocalPlaneYResolution"}, /* 0xA20F - - */
765 { 0x9210, "FocalPlaneResolutionUnit"}, /* 0xA210 - - */
766 { 0x9211, "ImageNumber"},
767 { 0x9212, "SecurityClassification"},
768 { 0x9213, "ImageHistory"},
769 { 0x9214, "SubjectLocation"}, /* 0xA214 - - */
770 { 0x9215, "ExposureIndex"}, /* 0xA215 - - */
771 { 0x9216, "TIFF/EPStandardID"},
772 { 0x9217, "SensingMethod"}, /* 0xA217 - - */
773 { 0x923F, "StoNits"},
774 { 0x927C, "MakerNote"},
775 { 0x9286, "UserComment"},
776 { 0x9290, "SubSecTime"},
777 { 0x9291, "SubSecTimeOriginal"},
778 { 0x9292, "SubSecTimeDigitized"},
779 { 0x935C, "ImageSourceData"}, /* "Adobe Photoshop Document Data Block": 8BIM... */
780 { 0x9c9b, "Title" }, /* Win XP specific, Unicode */
781 { 0x9c9c, "Comments" }, /* Win XP specific, Unicode */
782 { 0x9c9d, "Author" }, /* Win XP specific, Unicode */
783 { 0x9c9e, "Keywords" }, /* Win XP specific, Unicode */
784 { 0x9c9f, "Subject" }, /* Win XP specific, Unicode, not to be confused with SubjectDistance and SubjectLocation */
785 { 0xA000, "FlashPixVersion"},
786 { 0xA001, "ColorSpace"},
787 { 0xA002, "ExifImageWidth"},
788 { 0xA003, "ExifImageLength"},
789 { 0xA004, "RelatedSoundFile"},
790 { 0xA005, "InteroperabilityOffset"},
791 { 0xA20B, "FlashEnergy"}, /* 0x920B in TIFF/EP */
792 { 0xA20C, "SpatialFrequencyResponse"}, /* 0x920C - - */
793 { 0xA20D, "Noise"},
794 { 0xA20E, "FocalPlaneXResolution"}, /* 0x920E - - */
795 { 0xA20F, "FocalPlaneYResolution"}, /* 0x920F - - */
796 { 0xA210, "FocalPlaneResolutionUnit"}, /* 0x9210 - - */
797 { 0xA211, "ImageNumber"},
798 { 0xA212, "SecurityClassification"},
799 { 0xA213, "ImageHistory"},
800 { 0xA214, "SubjectLocation"}, /* 0x9214 - - */
801 { 0xA215, "ExposureIndex"}, /* 0x9215 - - */
802 { 0xA216, "TIFF/EPStandardID"},
803 { 0xA217, "SensingMethod"}, /* 0x9217 - - */
804 { 0xA300, "FileSource"},
805 { 0xA301, "SceneType"},
806 { 0xA302, "CFAPattern"},
807 { 0xA401, "CustomRendered"},
808 { 0xA402, "ExposureMode"},
809 { 0xA403, "WhiteBalance"},
810 { 0xA404, "DigitalZoomRatio"},
811 { 0xA405, "FocalLengthIn35mmFilm"},
812 { 0xA406, "SceneCaptureType"},
813 { 0xA407, "GainControl"},
814 { 0xA408, "Contrast"},
815 { 0xA409, "Saturation"},
816 { 0xA40A, "Sharpness"},
817 { 0xA40B, "DeviceSettingDescription"},
818 { 0xA40C, "SubjectDistanceRange"},
819 { 0xA420, "ImageUniqueID"},
820 TAG_TABLE_END
821 } ;
822
823 static tag_info_array tag_table_GPS = {
824 { 0x0000, "GPSVersion"},
825 { 0x0001, "GPSLatitudeRef"},
826 { 0x0002, "GPSLatitude"},
827 { 0x0003, "GPSLongitudeRef"},
828 { 0x0004, "GPSLongitude"},
829 { 0x0005, "GPSAltitudeRef"},
830 { 0x0006, "GPSAltitude"},
831 { 0x0007, "GPSTimeStamp"},
832 { 0x0008, "GPSSatellites"},
833 { 0x0009, "GPSStatus"},
834 { 0x000A, "GPSMeasureMode"},
835 { 0x000B, "GPSDOP"},
836 { 0x000C, "GPSSpeedRef"},
837 { 0x000D, "GPSSpeed"},
838 { 0x000E, "GPSTrackRef"},
839 { 0x000F, "GPSTrack"},
840 { 0x0010, "GPSImgDirectionRef"},
841 { 0x0011, "GPSImgDirection"},
842 { 0x0012, "GPSMapDatum"},
843 { 0x0013, "GPSDestLatitudeRef"},
844 { 0x0014, "GPSDestLatitude"},
845 { 0x0015, "GPSDestLongitudeRef"},
846 { 0x0016, "GPSDestLongitude"},
847 { 0x0017, "GPSDestBearingRef"},
848 { 0x0018, "GPSDestBearing"},
849 { 0x0019, "GPSDestDistanceRef"},
850 { 0x001A, "GPSDestDistance"},
851 { 0x001B, "GPSProcessingMode"},
852 { 0x001C, "GPSAreaInformation"},
853 { 0x001D, "GPSDateStamp"},
854 { 0x001E, "GPSDifferential"},
855 TAG_TABLE_END
856 };
857
858 static tag_info_array tag_table_IOP = {
859 { 0x0001, "InterOperabilityIndex"}, /* should be 'R98' or 'THM' */
860 { 0x0002, "InterOperabilityVersion"},
861 { 0x1000, "RelatedFileFormat"},
862 { 0x1001, "RelatedImageWidth"},
863 { 0x1002, "RelatedImageHeight"},
864 TAG_TABLE_END
865 };
866
867 static tag_info_array tag_table_VND_CANON = {
868 { 0x0001, "ModeArray"}, /* guess */
869 { 0x0004, "ImageInfo"}, /* guess */
870 { 0x0006, "ImageType"},
871 { 0x0007, "FirmwareVersion"},
872 { 0x0008, "ImageNumber"},
873 { 0x0009, "OwnerName"},
874 { 0x000C, "Camera"},
875 { 0x000F, "CustomFunctions"},
876 TAG_TABLE_END
877 };
878
879 static tag_info_array tag_table_VND_CASIO = {
880 { 0x0001, "RecordingMode"},
881 { 0x0002, "Quality"},
882 { 0x0003, "FocusingMode"},
883 { 0x0004, "FlashMode"},
884 { 0x0005, "FlashIntensity"},
885 { 0x0006, "ObjectDistance"},
886 { 0x0007, "WhiteBalance"},
887 { 0x000A, "DigitalZoom"},
888 { 0x000B, "Sharpness"},
889 { 0x000C, "Contrast"},
890 { 0x000D, "Saturation"},
891 { 0x0014, "CCDSensitivity"},
892 TAG_TABLE_END
893 };
894
895 static tag_info_array tag_table_VND_FUJI = {
896 { 0x0000, "Version"},
897 { 0x1000, "Quality"},
898 { 0x1001, "Sharpness"},
899 { 0x1002, "WhiteBalance"},
900 { 0x1003, "Color"},
901 { 0x1004, "Tone"},
902 { 0x1010, "FlashMode"},
903 { 0x1011, "FlashStrength"},
904 { 0x1020, "Macro"},
905 { 0x1021, "FocusMode"},
906 { 0x1030, "SlowSync"},
907 { 0x1031, "PictureMode"},
908 { 0x1100, "ContTake"},
909 { 0x1300, "BlurWarning"},
910 { 0x1301, "FocusWarning"},
911 { 0x1302, "AEWarning "},
912 TAG_TABLE_END
913 };
914
915 static tag_info_array tag_table_VND_NIKON = {
916 { 0x0003, "Quality"},
917 { 0x0004, "ColorMode"},
918 { 0x0005, "ImageAdjustment"},
919 { 0x0006, "CCDSensitivity"},
920 { 0x0007, "WhiteBalance"},
921 { 0x0008, "Focus"},
922 { 0x000a, "DigitalZoom"},
923 { 0x000b, "Converter"},
924 TAG_TABLE_END
925 };
926
927 static tag_info_array tag_table_VND_NIKON_990 = {
928 { 0x0001, "Version"},
929 { 0x0002, "ISOSetting"},
930 { 0x0003, "ColorMode"},
931 { 0x0004, "Quality"},
932 { 0x0005, "WhiteBalance"},
933 { 0x0006, "ImageSharpening"},
934 { 0x0007, "FocusMode"},
935 { 0x0008, "FlashSetting"},
936 { 0x000F, "ISOSelection"},
937 { 0x0080, "ImageAdjustment"},
938 { 0x0082, "AuxiliaryLens"},
939 { 0x0085, "ManualFocusDistance"},
940 { 0x0086, "DigitalZoom"},
941 { 0x0088, "AFFocusPosition"},
942 { 0x0010, "DataDump"},
943 TAG_TABLE_END
944 };
945
946 static tag_info_array tag_table_VND_OLYMPUS = {
947 { 0x0200, "SpecialMode"},
948 { 0x0201, "JPEGQuality"},
949 { 0x0202, "Macro"},
950 { 0x0204, "DigitalZoom"},
951 { 0x0207, "SoftwareRelease"},
952 { 0x0208, "PictureInfo"},
953 { 0x0209, "CameraId"},
954 { 0x0F00, "DataDump"},
955 TAG_TABLE_END
956 };
957
958 typedef enum mn_byte_order_t {
959 MN_ORDER_INTEL = 0,
960 MN_ORDER_MOTOROLA = 1,
961 MN_ORDER_NORMAL
962 } mn_byte_order_t;
963
964 typedef enum mn_offset_mode_t {
965 MN_OFFSET_NORMAL,
966 MN_OFFSET_MAKER,
967 MN_OFFSET_GUESS
968 } mn_offset_mode_t;
969
970 typedef struct {
971 tag_table_type tag_table;
972 char * make;
973 char * model;
974 char * id_string;
975 int id_string_len;
976 int offset;
977 mn_byte_order_t byte_order;
978 mn_offset_mode_t offset_mode;
979 } maker_note_type;
980
981 static const maker_note_type maker_note_array[] = {
982 { tag_table_VND_CANON, "Canon", NULL, NULL, 0, 0, MN_ORDER_INTEL, MN_OFFSET_GUESS},
983 /* { tag_table_VND_CANON, "Canon", NULL, NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},*/
984 { tag_table_VND_CASIO, "CASIO", NULL, NULL, 0, 0, MN_ORDER_MOTOROLA, MN_OFFSET_NORMAL},
985 { tag_table_VND_FUJI, "FUJIFILM", NULL, "FUJIFILM\x0C\x00\x00\x00", 12, 12, MN_ORDER_INTEL, MN_OFFSET_MAKER},
986 { tag_table_VND_NIKON, "NIKON", NULL, "Nikon\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
987 { tag_table_VND_NIKON_990, "NIKON", NULL, NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
988 { tag_table_VND_OLYMPUS, "OLYMPUS OPTICAL CO.,LTD", NULL, "OLYMP\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
989 };
990 /* }}} */
991
992 /* {{{ exif_get_tagname
993 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)994 static char * exif_get_tagname(int tag_num, char *ret, int len, tag_table_type tag_table)
995 {
996 int i, t;
997 char tmp[32];
998
999 for (i = 0; (t = tag_table[i].Tag) != TAG_END_OF_LIST; i++) {
1000 if (t == tag_num) {
1001 if (ret && len) {
1002 strlcpy(ret, tag_table[i].Desc, abs(len));
1003 if (len < 0) {
1004 memset(ret + strlen(ret), ' ', -len - strlen(ret) - 1);
1005 ret[-len - 1] = '\0';
1006 }
1007 return ret;
1008 }
1009 return tag_table[i].Desc;
1010 }
1011 }
1012
1013 if (ret && len) {
1014 snprintf(tmp, sizeof(tmp), "UndefinedTag:0x%04X", tag_num);
1015 strlcpy(ret, tmp, abs(len));
1016 if (len < 0) {
1017 memset(ret + strlen(ret), ' ', -len - strlen(ret) - 1);
1018 ret[-len - 1] = '\0';
1019 }
1020 return ret;
1021 }
1022 return "";
1023 }
1024 /* }}} */
1025
1026 /* {{{ exif_char_dump
1027 * Do not use! This is a debug function... */
1028 #ifdef EXIF_DEBUG
exif_char_dump(unsigned char * addr,int len,int offset)1029 static unsigned char* exif_char_dump(unsigned char * addr, int len, int offset)
1030 {
1031 static unsigned char buf[4096+1];
1032 static unsigned char tmp[20];
1033 int c, i, p=0, n = 5+31;
1034
1035 p += slprintf(buf+p, sizeof(buf)-p, "\nDump Len: %08X (%d)", len, len);
1036 if (len) {
1037 for(i=0; i<len+15 && p+n<=sizeof(buf); i++) {
1038 if (i%16==0) {
1039 p += slprintf(buf+p, sizeof(buf)-p, "\n%08X: ", i+offset);
1040 }
1041 if (i<len) {
1042 c = *addr++;
1043 p += slprintf(buf+p, sizeof(buf)-p, "%02X ", c);
1044 tmp[i%16] = c>=32 ? c : '.';
1045 tmp[(i%16)+1] = '\0';
1046 } else {
1047 p += slprintf(buf+p, sizeof(buf)-p, " ");
1048 }
1049 if (i%16==15) {
1050 p += slprintf(buf+p, sizeof(buf)-p, " %s", tmp);
1051 if (i>=len) {
1052 break;
1053 }
1054 }
1055 }
1056 }
1057 buf[sizeof(buf)-1] = '\0';
1058 return buf;
1059 }
1060 #endif
1061 /* }}} */
1062
1063 /* {{{ php_jpg_get16
1064 Get 16 bits motorola order (always) for jpeg header stuff.
1065 */
php_jpg_get16(void * value)1066 static int php_jpg_get16(void *value)
1067 {
1068 return (((uchar *)value)[0] << 8) | ((uchar *)value)[1];
1069 }
1070 /* }}} */
1071
1072 /* {{{ php_ifd_get16u
1073 * Convert a 16 bit unsigned value from file's native byte order */
php_ifd_get16u(void * value,int motorola_intel)1074 static int php_ifd_get16u(void *value, int motorola_intel)
1075 {
1076 if (motorola_intel) {
1077 return (((uchar *)value)[0] << 8) | ((uchar *)value)[1];
1078 } else {
1079 return (((uchar *)value)[1] << 8) | ((uchar *)value)[0];
1080 }
1081 }
1082 /* }}} */
1083
1084 /* {{{ php_ifd_get16s
1085 * Convert a 16 bit signed value from file's native byte order */
php_ifd_get16s(void * value,int motorola_intel)1086 static signed short php_ifd_get16s(void *value, int motorola_intel)
1087 {
1088 return (signed short)php_ifd_get16u(value, motorola_intel);
1089 }
1090 /* }}} */
1091
1092 /* {{{ php_ifd_get32s
1093 * Convert a 32 bit signed value from file's native byte order */
php_ifd_get32s(void * value,int motorola_intel)1094 static int php_ifd_get32s(void *value, int motorola_intel)
1095 {
1096 if (motorola_intel) {
1097 return (((char *)value)[0] << 24)
1098 | (((uchar *)value)[1] << 16)
1099 | (((uchar *)value)[2] << 8 )
1100 | (((uchar *)value)[3] );
1101 } else {
1102 return (((char *)value)[3] << 24)
1103 | (((uchar *)value)[2] << 16)
1104 | (((uchar *)value)[1] << 8 )
1105 | (((uchar *)value)[0] );
1106 }
1107 }
1108 /* }}} */
1109
1110 /* {{{ php_ifd_get32u
1111 * Write 32 bit unsigned value to data */
php_ifd_get32u(void * value,int motorola_intel)1112 static unsigned php_ifd_get32u(void *value, int motorola_intel)
1113 {
1114 return (unsigned)php_ifd_get32s(value, motorola_intel) & 0xffffffff;
1115 }
1116 /* }}} */
1117
1118 /* {{{ php_ifd_set16u
1119 * Write 16 bit unsigned value to data */
php_ifd_set16u(char * data,unsigned int value,int motorola_intel)1120 static void php_ifd_set16u(char *data, unsigned int value, int motorola_intel)
1121 {
1122 if (motorola_intel) {
1123 data[0] = (value & 0xFF00) >> 8;
1124 data[1] = (value & 0x00FF);
1125 } else {
1126 data[1] = (value & 0xFF00) >> 8;
1127 data[0] = (value & 0x00FF);
1128 }
1129 }
1130 /* }}} */
1131
1132 /* {{{ php_ifd_set32u
1133 * Convert a 32 bit unsigned value from file's native byte order */
php_ifd_set32u(char * data,size_t value,int motorola_intel)1134 static void php_ifd_set32u(char *data, size_t value, int motorola_intel)
1135 {
1136 if (motorola_intel) {
1137 data[0] = (value & 0xFF000000) >> 24;
1138 data[1] = (value & 0x00FF0000) >> 16;
1139 data[2] = (value & 0x0000FF00) >> 8;
1140 data[3] = (value & 0x000000FF);
1141 } else {
1142 data[3] = (value & 0xFF000000) >> 24;
1143 data[2] = (value & 0x00FF0000) >> 16;
1144 data[1] = (value & 0x0000FF00) >> 8;
1145 data[0] = (value & 0x000000FF);
1146 }
1147 }
1148 /* }}} */
1149
1150 #ifdef EXIF_DEBUG
exif_dump_data(int * dump_free,int format,int components,int length,int motorola_intel,char * value_ptr)1151 char * exif_dump_data(int *dump_free, int format, int components, int length, int motorola_intel, char *value_ptr) /* {{{ */
1152 {
1153 char *dump;
1154 int len;
1155
1156 *dump_free = 0;
1157 if (format == TAG_FMT_STRING) {
1158 return value_ptr ? value_ptr : "<no data>";
1159 }
1160 if (format == TAG_FMT_UNDEFINED) {
1161 return "<undefined>\n";
1162 }
1163 if (format == TAG_FMT_IFD) {
1164 return "";
1165 }
1166 if (format == TAG_FMT_SINGLE || format == TAG_FMT_DOUBLE) {
1167 return "<not implemented>";
1168 }
1169 *dump_free = 1;
1170 if (components > 1) {
1171 len = spprintf(&dump, 0, "(%d,%d) {", components, length);
1172 } else {
1173 len = spprintf(&dump, 0, "{");
1174 }
1175 while(components > 0) {
1176 switch(format) {
1177 case TAG_FMT_BYTE:
1178 case TAG_FMT_UNDEFINED:
1179 case TAG_FMT_STRING:
1180 case TAG_FMT_SBYTE:
1181 dump = erealloc(dump, len + 4 + 1);
1182 snprintf(dump + len, 4 + 1, "0x%02X", *value_ptr);
1183 len += 4;
1184 value_ptr++;
1185 break;
1186 case TAG_FMT_USHORT:
1187 case TAG_FMT_SSHORT:
1188 dump = erealloc(dump, len + 6 + 1);
1189 snprintf(dump + len, 6 + 1, "0x%04X", php_ifd_get16s(value_ptr, motorola_intel));
1190 len += 6;
1191 value_ptr += 2;
1192 break;
1193 case TAG_FMT_ULONG:
1194 case TAG_FMT_SLONG:
1195 dump = erealloc(dump, len + 6 + 1);
1196 snprintf(dump + len, 6 + 1, "0x%04X", php_ifd_get32s(value_ptr, motorola_intel));
1197 len += 6;
1198 value_ptr += 4;
1199 break;
1200 case TAG_FMT_URATIONAL:
1201 case TAG_FMT_SRATIONAL:
1202 dump = erealloc(dump, len + 13 + 1);
1203 snprintf(dump + len, 13 + 1, "0x%04X/0x%04X", php_ifd_get32s(value_ptr, motorola_intel), php_ifd_get32s(value_ptr+4, motorola_intel));
1204 len += 13;
1205 value_ptr += 8;
1206 break;
1207 }
1208 if (components > 0) {
1209 dump = erealloc(dump, len + 2 + 1);
1210 snprintf(dump + len, 2 + 1, ", ");
1211 len += 2;
1212 components--;
1213 } else{
1214 break;
1215 }
1216 }
1217 dump = erealloc(dump, len + 1 + 1);
1218 snprintf(dump + len, 1 + 1, "}");
1219 return dump;
1220 }
1221 /* }}} */
1222 #endif
1223
1224 /* {{{ exif_convert_any_format
1225 * Evaluate number, be it int, rational, or float from directory. */
exif_convert_any_format(void * value,int format,int motorola_intel)1226 static double exif_convert_any_format(void *value, int format, int motorola_intel)
1227 {
1228 int s_den;
1229 unsigned u_den;
1230
1231 switch(format) {
1232 case TAG_FMT_SBYTE: return *(signed char *)value;
1233 case TAG_FMT_BYTE: return *(uchar *)value;
1234
1235 case TAG_FMT_USHORT: return php_ifd_get16u(value, motorola_intel);
1236 case TAG_FMT_ULONG: return php_ifd_get32u(value, motorola_intel);
1237
1238 case TAG_FMT_URATIONAL:
1239 u_den = php_ifd_get32u(4+(char *)value, motorola_intel);
1240 if (u_den == 0) {
1241 return 0;
1242 } else {
1243 return (double)php_ifd_get32u(value, motorola_intel) / u_den;
1244 }
1245
1246 case TAG_FMT_SRATIONAL:
1247 s_den = php_ifd_get32s(4+(char *)value, motorola_intel);
1248 if (s_den == 0) {
1249 return 0;
1250 } else {
1251 return (double)php_ifd_get32s(value, motorola_intel) / s_den;
1252 }
1253
1254 case TAG_FMT_SSHORT: return (signed short)php_ifd_get16u(value, motorola_intel);
1255 case TAG_FMT_SLONG: return php_ifd_get32s(value, motorola_intel);
1256
1257 /* Not sure if this is correct (never seen float used in Exif format) */
1258 case TAG_FMT_SINGLE:
1259 #ifdef EXIF_DEBUG
1260 php_error_docref(NULL, E_NOTICE, "Found value of type single");
1261 #endif
1262 return (double)*(float *)value;
1263 case TAG_FMT_DOUBLE:
1264 #ifdef EXIF_DEBUG
1265 php_error_docref(NULL, E_NOTICE, "Found value of type double");
1266 #endif
1267 return *(double *)value;
1268 }
1269 return 0;
1270 }
1271 /* }}} */
1272
1273 /* {{{ exif_convert_any_to_int
1274 * Evaluate number, be it int, rational, or float from directory. */
exif_convert_any_to_int(void * value,int format,int motorola_intel)1275 static size_t exif_convert_any_to_int(void *value, int format, int motorola_intel)
1276 {
1277 int s_den;
1278 unsigned u_den;
1279
1280 switch(format) {
1281 case TAG_FMT_SBYTE: return *(signed char *)value;
1282 case TAG_FMT_BYTE: return *(uchar *)value;
1283
1284 case TAG_FMT_USHORT: return php_ifd_get16u(value, motorola_intel);
1285 case TAG_FMT_ULONG: return php_ifd_get32u(value, motorola_intel);
1286
1287 case TAG_FMT_URATIONAL:
1288 u_den = php_ifd_get32u(4+(char *)value, motorola_intel);
1289 if (u_den == 0) {
1290 return 0;
1291 } else {
1292 return php_ifd_get32u(value, motorola_intel) / u_den;
1293 }
1294
1295 case TAG_FMT_SRATIONAL:
1296 s_den = php_ifd_get32s(4+(char *)value, motorola_intel);
1297 if (s_den == 0) {
1298 return 0;
1299 } else {
1300 return (size_t)((double)php_ifd_get32s(value, motorola_intel) / s_den);
1301 }
1302
1303 case TAG_FMT_SSHORT: return php_ifd_get16u(value, motorola_intel);
1304 case TAG_FMT_SLONG: return php_ifd_get32s(value, motorola_intel);
1305
1306 /* Not sure if this is correct (never seen float used in Exif format) */
1307 case TAG_FMT_SINGLE:
1308 #ifdef EXIF_DEBUG
1309 php_error_docref(NULL, E_NOTICE, "Found value of type single");
1310 #endif
1311 return (size_t)*(float *)value;
1312 case TAG_FMT_DOUBLE:
1313 #ifdef EXIF_DEBUG
1314 php_error_docref(NULL, E_NOTICE, "Found value of type double");
1315 #endif
1316 return (size_t)*(double *)value;
1317 }
1318 return 0;
1319 }
1320 /* }}} */
1321
1322 /* {{{ struct image_info_value, image_info_list
1323 */
1324 #ifndef WORD
1325 #define WORD unsigned short
1326 #endif
1327 #ifndef DWORD
1328 #define DWORD unsigned int
1329 #endif
1330
1331 typedef struct {
1332 int num;
1333 int den;
1334 } signed_rational;
1335
1336 typedef struct {
1337 unsigned int num;
1338 unsigned int den;
1339 } unsigned_rational;
1340
1341 typedef union _image_info_value {
1342 char *s;
1343 unsigned u;
1344 int i;
1345 float f;
1346 double d;
1347 signed_rational sr;
1348 unsigned_rational ur;
1349 union _image_info_value *list;
1350 } image_info_value;
1351
1352 typedef struct {
1353 WORD tag;
1354 WORD format;
1355 DWORD length;
1356 DWORD dummy; /* value ptr of tiff directory entry */
1357 char *name;
1358 image_info_value value;
1359 } image_info_data;
1360
1361 typedef struct {
1362 int count;
1363 image_info_data *list;
1364 } image_info_list;
1365 /* }}} */
1366
1367 /* {{{ exif_get_sectionname
1368 Returns the name of a section
1369 */
1370 #define SECTION_FILE 0
1371 #define SECTION_COMPUTED 1
1372 #define SECTION_ANY_TAG 2
1373 #define SECTION_IFD0 3
1374 #define SECTION_THUMBNAIL 4
1375 #define SECTION_COMMENT 5
1376 #define SECTION_APP0 6
1377 #define SECTION_EXIF 7
1378 #define SECTION_FPIX 8
1379 #define SECTION_GPS 9
1380 #define SECTION_INTEROP 10
1381 #define SECTION_APP12 11
1382 #define SECTION_WINXP 12
1383 #define SECTION_MAKERNOTE 13
1384 #define SECTION_COUNT 14
1385
1386 #define FOUND_FILE (1<<SECTION_FILE)
1387 #define FOUND_COMPUTED (1<<SECTION_COMPUTED)
1388 #define FOUND_ANY_TAG (1<<SECTION_ANY_TAG)
1389 #define FOUND_IFD0 (1<<SECTION_IFD0)
1390 #define FOUND_THUMBNAIL (1<<SECTION_THUMBNAIL)
1391 #define FOUND_COMMENT (1<<SECTION_COMMENT)
1392 #define FOUND_APP0 (1<<SECTION_APP0)
1393 #define FOUND_EXIF (1<<SECTION_EXIF)
1394 #define FOUND_FPIX (1<<SECTION_FPIX)
1395 #define FOUND_GPS (1<<SECTION_GPS)
1396 #define FOUND_INTEROP (1<<SECTION_INTEROP)
1397 #define FOUND_APP12 (1<<SECTION_APP12)
1398 #define FOUND_WINXP (1<<SECTION_WINXP)
1399 #define FOUND_MAKERNOTE (1<<SECTION_MAKERNOTE)
1400
exif_get_sectionname(int section)1401 static char *exif_get_sectionname(int section)
1402 {
1403 switch(section) {
1404 case SECTION_FILE: return "FILE";
1405 case SECTION_COMPUTED: return "COMPUTED";
1406 case SECTION_ANY_TAG: return "ANY_TAG";
1407 case SECTION_IFD0: return "IFD0";
1408 case SECTION_THUMBNAIL: return "THUMBNAIL";
1409 case SECTION_COMMENT: return "COMMENT";
1410 case SECTION_APP0: return "APP0";
1411 case SECTION_EXIF: return "EXIF";
1412 case SECTION_FPIX: return "FPIX";
1413 case SECTION_GPS: return "GPS";
1414 case SECTION_INTEROP: return "INTEROP";
1415 case SECTION_APP12: return "APP12";
1416 case SECTION_WINXP: return "WINXP";
1417 case SECTION_MAKERNOTE: return "MAKERNOTE";
1418 }
1419 return "";
1420 }
1421
exif_get_tag_table(int section)1422 static tag_table_type exif_get_tag_table(int section)
1423 {
1424 switch(section) {
1425 case SECTION_FILE: return &tag_table_IFD[0];
1426 case SECTION_COMPUTED: return &tag_table_IFD[0];
1427 case SECTION_ANY_TAG: return &tag_table_IFD[0];
1428 case SECTION_IFD0: return &tag_table_IFD[0];
1429 case SECTION_THUMBNAIL: return &tag_table_IFD[0];
1430 case SECTION_COMMENT: return &tag_table_IFD[0];
1431 case SECTION_APP0: return &tag_table_IFD[0];
1432 case SECTION_EXIF: return &tag_table_IFD[0];
1433 case SECTION_FPIX: return &tag_table_IFD[0];
1434 case SECTION_GPS: return &tag_table_GPS[0];
1435 case SECTION_INTEROP: return &tag_table_IOP[0];
1436 case SECTION_APP12: return &tag_table_IFD[0];
1437 case SECTION_WINXP: return &tag_table_IFD[0];
1438 }
1439 return &tag_table_IFD[0];
1440 }
1441 /* }}} */
1442
1443 /* {{{ exif_get_sectionlist
1444 Return list of sectionnames specified by sectionlist. Return value must be freed
1445 */
exif_get_sectionlist(int sectionlist)1446 static char *exif_get_sectionlist(int sectionlist)
1447 {
1448 int i, len, ml = 0;
1449 char *sections;
1450
1451 for(i=0; i<SECTION_COUNT; i++) {
1452 ml += strlen(exif_get_sectionname(i))+2;
1453 }
1454 sections = safe_emalloc(ml, 1, 1);
1455 sections[0] = '\0';
1456 len = 0;
1457 for(i=0; i<SECTION_COUNT; i++) {
1458 if (sectionlist&(1<<i)) {
1459 snprintf(sections+len, ml-len, "%s, ", exif_get_sectionname(i));
1460 len = strlen(sections);
1461 }
1462 }
1463 if (len>2)
1464 sections[len-2] = '\0';
1465 return sections;
1466 }
1467 /* }}} */
1468
1469 /* {{{ struct image_info_type
1470 This structure stores Exif header image elements in a simple manner
1471 Used to store camera data as extracted from the various ways that it can be
1472 stored in a nexif header
1473 */
1474
1475 typedef struct {
1476 int type;
1477 size_t size;
1478 uchar *data;
1479 } file_section;
1480
1481 typedef struct {
1482 int count;
1483 file_section *list;
1484 } file_section_list;
1485
1486 typedef struct {
1487 image_filetype filetype;
1488 size_t width, height;
1489 size_t size;
1490 size_t offset;
1491 char *data;
1492 } thumbnail_data;
1493
1494 typedef struct {
1495 char *value;
1496 size_t size;
1497 int tag;
1498 } xp_field_type;
1499
1500 typedef struct {
1501 int count;
1502 xp_field_type *list;
1503 } xp_field_list;
1504
1505 /* This structure is used to store a section of a Jpeg file. */
1506 typedef struct {
1507 php_stream *infile;
1508 char *FileName;
1509 time_t FileDateTime;
1510 size_t FileSize;
1511 image_filetype FileType;
1512 int Height, Width;
1513 int IsColor;
1514
1515 char *make;
1516 char *model;
1517
1518 float ApertureFNumber;
1519 float ExposureTime;
1520 double FocalplaneUnits;
1521 float CCDWidth;
1522 double FocalplaneXRes;
1523 size_t ExifImageWidth;
1524 float FocalLength;
1525 float Distance;
1526
1527 int motorola_intel; /* 1 Motorola; 0 Intel */
1528
1529 char *UserComment;
1530 int UserCommentLength;
1531 char *UserCommentEncoding;
1532 char *encode_unicode;
1533 char *decode_unicode_be;
1534 char *decode_unicode_le;
1535 char *encode_jis;
1536 char *decode_jis_be;
1537 char *decode_jis_le;
1538 char *Copyright;/* EXIF standard defines Copyright as "<Photographer> [ '\0' <Editor> ] ['\0']" */
1539 char *CopyrightPhotographer;
1540 char *CopyrightEditor;
1541
1542 xp_field_list xp_fields;
1543
1544 thumbnail_data Thumbnail;
1545 /* other */
1546 int sections_found; /* FOUND_<marker> */
1547 image_info_list info_list[SECTION_COUNT];
1548 /* for parsing */
1549 int read_thumbnail;
1550 int read_all;
1551 int ifd_nesting_level;
1552 /* internal */
1553 file_section_list file;
1554 } image_info_type;
1555 /* }}} */
1556
1557 /* {{{ exif_error_docref */
exif_error_docref(const char * docref EXIFERR_DC,const image_info_type * ImageInfo,int type,const char * format,...)1558 static void exif_error_docref(const char *docref EXIFERR_DC, const image_info_type *ImageInfo, int type, const char *format, ...)
1559 {
1560 va_list args;
1561
1562 va_start(args, format);
1563 #ifdef EXIF_DEBUG
1564 {
1565 char *buf;
1566
1567 spprintf(&buf, 0, "%s(%d): %s", _file, _line, format);
1568 php_verror(docref, ImageInfo->FileName?ImageInfo->FileName:"", type, buf, args);
1569 efree(buf);
1570 }
1571 #else
1572 php_verror(docref, ImageInfo->FileName?ImageInfo->FileName:"", type, format, args);
1573 #endif
1574 va_end(args);
1575 }
1576 /* }}} */
1577
1578 /* {{{ jpeg_sof_info
1579 */
1580 typedef struct {
1581 int bits_per_sample;
1582 size_t width;
1583 size_t height;
1584 int num_components;
1585 } jpeg_sof_info;
1586 /* }}} */
1587
1588 /* {{{ exif_file_sections_add
1589 Add a file_section to image_info
1590 returns the used block or -1. if size>0 and data == NULL buffer of size is allocated
1591 */
exif_file_sections_add(image_info_type * ImageInfo,int type,size_t size,uchar * data)1592 static int exif_file_sections_add(image_info_type *ImageInfo, int type, size_t size, uchar *data)
1593 {
1594 file_section *tmp;
1595 int count = ImageInfo->file.count;
1596
1597 tmp = safe_erealloc(ImageInfo->file.list, (count+1), sizeof(file_section), 0);
1598 ImageInfo->file.list = tmp;
1599 ImageInfo->file.list[count].type = 0xFFFF;
1600 ImageInfo->file.list[count].data = NULL;
1601 ImageInfo->file.list[count].size = 0;
1602 ImageInfo->file.count = count+1;
1603 if (!size) {
1604 data = NULL;
1605 } else if (data == NULL) {
1606 data = safe_emalloc(size, 1, 0);
1607 }
1608 ImageInfo->file.list[count].type = type;
1609 ImageInfo->file.list[count].data = data;
1610 ImageInfo->file.list[count].size = size;
1611 return count;
1612 }
1613 /* }}} */
1614
1615 /* {{{ exif_file_sections_realloc
1616 Reallocate a file section returns 0 on success and -1 on failure
1617 */
exif_file_sections_realloc(image_info_type * ImageInfo,int section_index,size_t size)1618 static int exif_file_sections_realloc(image_info_type *ImageInfo, int section_index, size_t size)
1619 {
1620 void *tmp;
1621
1622 /* This is not a malloc/realloc check. It is a plausibility check for the
1623 * function parameters (requirements engineering).
1624 */
1625 if (section_index >= ImageInfo->file.count) {
1626 EXIF_ERRLOG_FSREALLOC(ImageInfo)
1627 return -1;
1628 }
1629 tmp = safe_erealloc(ImageInfo->file.list[section_index].data, 1, size, 0);
1630 ImageInfo->file.list[section_index].data = tmp;
1631 ImageInfo->file.list[section_index].size = size;
1632 return 0;
1633 }
1634 /* }}} */
1635
1636 /* {{{ exif_file_section_free
1637 Discard all file_sections in ImageInfo
1638 */
exif_file_sections_free(image_info_type * ImageInfo)1639 static int exif_file_sections_free(image_info_type *ImageInfo)
1640 {
1641 int i;
1642
1643 if (ImageInfo->file.count) {
1644 for (i=0; i<ImageInfo->file.count; i++) {
1645 EFREE_IF(ImageInfo->file.list[i].data);
1646 }
1647 }
1648 EFREE_IF(ImageInfo->file.list);
1649 ImageInfo->file.count = 0;
1650 return TRUE;
1651 }
1652 /* }}} */
1653
1654 /* {{{ exif_iif_add_value
1655 Add a value to image_info
1656 */
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)1657 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)
1658 {
1659 size_t idex;
1660 void *vptr;
1661 image_info_value *info_value;
1662 image_info_data *info_data;
1663 image_info_data *list;
1664
1665 if (length < 0) {
1666 return;
1667 }
1668
1669 list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
1670 image_info->info_list[section_index].list = list;
1671
1672 info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
1673 memset(info_data, 0, sizeof(image_info_data));
1674 info_data->tag = tag;
1675 info_data->format = format;
1676 info_data->length = length;
1677 info_data->name = estrdup(name);
1678 info_value = &info_data->value;
1679
1680 switch (format) {
1681 case TAG_FMT_STRING:
1682 if (value) {
1683 length = php_strnlen(value, length);
1684 info_value->s = estrndup(value, length);
1685 info_data->length = length;
1686 } else {
1687 info_data->length = 0;
1688 info_value->s = estrdup("");
1689 }
1690 break;
1691
1692 default:
1693 /* Standard says more types possible but skip them...
1694 * but allow users to handle data if they know how to
1695 * So not return but use type UNDEFINED
1696 * return;
1697 */
1698 info_data->tag = TAG_FMT_UNDEFINED;/* otherwise not freed from memory */
1699 case TAG_FMT_SBYTE:
1700 case TAG_FMT_BYTE:
1701 /* in contrast to strings bytes do not need to allocate buffer for NULL if length==0 */
1702 if (!length)
1703 break;
1704 case TAG_FMT_UNDEFINED:
1705 if (value) {
1706 if (tag == TAG_MAKER_NOTE) {
1707 length = (int) php_strnlen(value, length);
1708 }
1709
1710 /* do not recompute length here */
1711 info_value->s = estrndup(value, length);
1712 info_data->length = length;
1713 } else {
1714 info_data->length = 0;
1715 info_value->s = estrdup("");
1716 }
1717 break;
1718
1719 case TAG_FMT_USHORT:
1720 case TAG_FMT_ULONG:
1721 case TAG_FMT_URATIONAL:
1722 case TAG_FMT_SSHORT:
1723 case TAG_FMT_SLONG:
1724 case TAG_FMT_SRATIONAL:
1725 case TAG_FMT_SINGLE:
1726 case TAG_FMT_DOUBLE:
1727 if (length==0) {
1728 break;
1729 } else
1730 if (length>1) {
1731 info_value->list = safe_emalloc(length, sizeof(image_info_value), 0);
1732 } else {
1733 info_value = &info_data->value;
1734 }
1735 for (idex=0,vptr=value; idex<(size_t)length; idex++,vptr=(char *) vptr + php_tiff_bytes_per_format[format]) {
1736 if (length>1) {
1737 info_value = &info_data->value.list[idex];
1738 }
1739 switch (format) {
1740 case TAG_FMT_USHORT:
1741 info_value->u = php_ifd_get16u(vptr, motorola_intel);
1742 break;
1743
1744 case TAG_FMT_ULONG:
1745 info_value->u = php_ifd_get32u(vptr, motorola_intel);
1746 break;
1747
1748 case TAG_FMT_URATIONAL:
1749 info_value->ur.num = php_ifd_get32u(vptr, motorola_intel);
1750 info_value->ur.den = php_ifd_get32u(4+(char *)vptr, motorola_intel);
1751 break;
1752
1753 case TAG_FMT_SSHORT:
1754 info_value->i = php_ifd_get16s(vptr, motorola_intel);
1755 break;
1756
1757 case TAG_FMT_SLONG:
1758 info_value->i = php_ifd_get32s(vptr, motorola_intel);
1759 break;
1760
1761 case TAG_FMT_SRATIONAL:
1762 info_value->sr.num = php_ifd_get32u(vptr, motorola_intel);
1763 info_value->sr.den = php_ifd_get32u(4+(char *)vptr, motorola_intel);
1764 break;
1765
1766 case TAG_FMT_SINGLE:
1767 #ifdef EXIF_DEBUG
1768 php_error_docref(NULL, E_WARNING, "Found value of type single");
1769 #endif
1770 info_value->f = *(float *)value;
1771
1772 case TAG_FMT_DOUBLE:
1773 #ifdef EXIF_DEBUG
1774 php_error_docref(NULL, E_WARNING, "Found value of type double");
1775 #endif
1776 info_value->d = *(double *)value;
1777 break;
1778 }
1779 }
1780 }
1781 image_info->sections_found |= 1<<section_index;
1782 image_info->info_list[section_index].count++;
1783 }
1784 /* }}} */
1785
1786 /* {{{ exif_iif_add_tag
1787 Add a tag from IFD to image_info
1788 */
exif_iif_add_tag(image_info_type * image_info,int section_index,char * name,int tag,int format,size_t length,void * value)1789 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)
1790 {
1791 exif_iif_add_value(image_info, section_index, name, tag, format, (int)length, value, image_info->motorola_intel);
1792 }
1793 /* }}} */
1794
1795 /* {{{ exif_iif_add_int
1796 Add an int value to image_info
1797 */
exif_iif_add_int(image_info_type * image_info,int section_index,char * name,int value)1798 static void exif_iif_add_int(image_info_type *image_info, int section_index, char *name, int value)
1799 {
1800 image_info_data *info_data;
1801 image_info_data *list;
1802
1803 list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
1804 image_info->info_list[section_index].list = list;
1805
1806 info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
1807 info_data->tag = TAG_NONE;
1808 info_data->format = TAG_FMT_SLONG;
1809 info_data->length = 1;
1810 info_data->name = estrdup(name);
1811 info_data->value.i = value;
1812 image_info->sections_found |= 1<<section_index;
1813 image_info->info_list[section_index].count++;
1814 }
1815 /* }}} */
1816
1817 /* {{{ exif_iif_add_str
1818 Add a string value to image_info MUST BE NUL TERMINATED
1819 */
exif_iif_add_str(image_info_type * image_info,int section_index,char * name,char * value)1820 static void exif_iif_add_str(image_info_type *image_info, int section_index, char *name, char *value)
1821 {
1822 image_info_data *info_data;
1823 image_info_data *list;
1824
1825 if (value) {
1826 list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
1827 image_info->info_list[section_index].list = list;
1828 info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
1829 info_data->tag = TAG_NONE;
1830 info_data->format = TAG_FMT_STRING;
1831 info_data->length = 1;
1832 info_data->name = estrdup(name);
1833 info_data->value.s = estrdup(value);
1834 image_info->sections_found |= 1<<section_index;
1835 image_info->info_list[section_index].count++;
1836 }
1837 }
1838 /* }}} */
1839
1840 /* {{{ exif_iif_add_fmt
1841 Add a format string value to image_info MUST BE NUL TERMINATED
1842 */
exif_iif_add_fmt(image_info_type * image_info,int section_index,char * name,char * value,...)1843 static void exif_iif_add_fmt(image_info_type *image_info, int section_index, char *name, char *value, ...)
1844 {
1845 char *tmp;
1846 va_list arglist;
1847
1848 va_start(arglist, value);
1849 if (value) {
1850 vspprintf(&tmp, 0, value, arglist);
1851 exif_iif_add_str(image_info, section_index, name, tmp);
1852 efree(tmp);
1853 }
1854 va_end(arglist);
1855 }
1856 /* }}} */
1857
1858 /* {{{ exif_iif_add_str
1859 Add a string value to image_info MUST BE NUL TERMINATED
1860 */
exif_iif_add_buffer(image_info_type * image_info,int section_index,char * name,int length,char * value)1861 static void exif_iif_add_buffer(image_info_type *image_info, int section_index, char *name, int length, char *value)
1862 {
1863 image_info_data *info_data;
1864 image_info_data *list;
1865
1866 if (value) {
1867 list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
1868 image_info->info_list[section_index].list = list;
1869 info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
1870 info_data->tag = TAG_NONE;
1871 info_data->format = TAG_FMT_UNDEFINED;
1872 info_data->length = length;
1873 info_data->name = estrdup(name);
1874 info_data->value.s = safe_emalloc(length, 1, 1);
1875 memcpy(info_data->value.s, value, length);
1876 info_data->value.s[length] = 0;
1877 image_info->sections_found |= 1<<section_index;
1878 image_info->info_list[section_index].count++;
1879 }
1880 }
1881 /* }}} */
1882
1883 /* {{{ exif_iif_free
1884 Free memory allocated for image_info
1885 */
exif_iif_free(image_info_type * image_info,int section_index)1886 static void exif_iif_free(image_info_type *image_info, int section_index) {
1887 int i;
1888 void *f; /* faster */
1889
1890 if (image_info->info_list[section_index].count) {
1891 for (i=0; i < image_info->info_list[section_index].count; i++) {
1892 if ((f=image_info->info_list[section_index].list[i].name) != NULL) {
1893 efree(f);
1894 }
1895 switch(image_info->info_list[section_index].list[i].format) {
1896 case TAG_FMT_SBYTE:
1897 case TAG_FMT_BYTE:
1898 /* in contrast to strings bytes do not need to allocate buffer for NULL if length==0 */
1899 if (image_info->info_list[section_index].list[i].length<1)
1900 break;
1901 default:
1902 case TAG_FMT_UNDEFINED:
1903 case TAG_FMT_STRING:
1904 if ((f=image_info->info_list[section_index].list[i].value.s) != NULL) {
1905 efree(f);
1906 }
1907 break;
1908
1909 case TAG_FMT_USHORT:
1910 case TAG_FMT_ULONG:
1911 case TAG_FMT_URATIONAL:
1912 case TAG_FMT_SSHORT:
1913 case TAG_FMT_SLONG:
1914 case TAG_FMT_SRATIONAL:
1915 case TAG_FMT_SINGLE:
1916 case TAG_FMT_DOUBLE:
1917 /* nothing to do here */
1918 if (image_info->info_list[section_index].list[i].length > 1) {
1919 if ((f=image_info->info_list[section_index].list[i].value.list) != NULL) {
1920 efree(f);
1921 }
1922 }
1923 break;
1924 }
1925 }
1926 }
1927 EFREE_IF(image_info->info_list[section_index].list);
1928 }
1929 /* }}} */
1930
1931 /* {{{ add_assoc_image_info
1932 * Add image_info to associative array value. */
add_assoc_image_info(zval * value,int sub_array,image_info_type * image_info,int section_index)1933 static void add_assoc_image_info(zval *value, int sub_array, image_info_type *image_info, int section_index)
1934 {
1935 char buffer[64], *val, *name, uname[64];
1936 int i, ap, l, b, idx=0, unknown=0;
1937 #ifdef EXIF_DEBUG
1938 int info_tag;
1939 #endif
1940 image_info_value *info_value;
1941 image_info_data *info_data;
1942 zval tmpi, array;
1943
1944 #ifdef EXIF_DEBUG
1945 /* php_error_docref(NULL, E_NOTICE, "Adding %d infos from section %s", image_info->info_list[section_index].count, exif_get_sectionname(section_index));*/
1946 #endif
1947 if (image_info->info_list[section_index].count) {
1948 if (sub_array) {
1949 array_init(&tmpi);
1950 } else {
1951 ZVAL_COPY_VALUE(&tmpi, value);
1952 }
1953
1954 for(i=0; i<image_info->info_list[section_index].count; i++) {
1955 info_data = &image_info->info_list[section_index].list[i];
1956 #ifdef EXIF_DEBUG
1957 info_tag = info_data->tag; /* conversion */
1958 #endif
1959 info_value = &info_data->value;
1960 if (!(name = info_data->name)) {
1961 snprintf(uname, sizeof(uname), "%d", unknown++);
1962 name = uname;
1963 }
1964 #ifdef EXIF_DEBUG
1965 /* php_error_docref(NULL, E_NOTICE, "Adding infos: tag(0x%04X,%12s,L=0x%04X): %s", info_tag, exif_get_tagname(info_tag, buffer, -12, exif_get_tag_table(section_index)), info_data->length, info_data->format==TAG_FMT_STRING?(info_value&&info_value->s?info_value->s:"<no data>"):exif_get_tagformat(info_data->format));*/
1966 #endif
1967 if (info_data->length==0) {
1968 add_assoc_null(&tmpi, name);
1969 } else {
1970 switch (info_data->format) {
1971 default:
1972 /* Standard says more types possible but skip them...
1973 * but allow users to handle data if they know how to
1974 * So not return but use type UNDEFINED
1975 * return;
1976 */
1977 case TAG_FMT_BYTE:
1978 case TAG_FMT_SBYTE:
1979 case TAG_FMT_UNDEFINED:
1980 if (!info_value->s) {
1981 add_assoc_stringl(&tmpi, name, "", 0);
1982 } else {
1983 add_assoc_stringl(&tmpi, name, info_value->s, info_data->length);
1984 }
1985 break;
1986
1987 case TAG_FMT_STRING:
1988 if (!(val = info_value->s)) {
1989 val = "";
1990 }
1991 if (section_index==SECTION_COMMENT) {
1992 add_index_string(&tmpi, idx++, val);
1993 } else {
1994 add_assoc_string(&tmpi, name, val);
1995 }
1996 break;
1997
1998 case TAG_FMT_URATIONAL:
1999 case TAG_FMT_SRATIONAL:
2000 /*case TAG_FMT_BYTE:
2001 case TAG_FMT_SBYTE:*/
2002 case TAG_FMT_USHORT:
2003 case TAG_FMT_SSHORT:
2004 case TAG_FMT_SINGLE:
2005 case TAG_FMT_DOUBLE:
2006 case TAG_FMT_ULONG:
2007 case TAG_FMT_SLONG:
2008 /* now the rest, first see if it becomes an array */
2009 if ((l = info_data->length) > 1) {
2010 array_init(&array);
2011 }
2012 for(ap=0; ap<l; ap++) {
2013 if (l>1) {
2014 info_value = &info_data->value.list[ap];
2015 }
2016 switch (info_data->format) {
2017 case TAG_FMT_BYTE:
2018 if (l>1) {
2019 info_value = &info_data->value;
2020 for (b=0;b<l;b++) {
2021 add_index_long(&array, b, (int)(info_value->s[b]));
2022 }
2023 break;
2024 }
2025 case TAG_FMT_USHORT:
2026 case TAG_FMT_ULONG:
2027 if (l==1) {
2028 add_assoc_long(&tmpi, name, (int)info_value->u);
2029 } else {
2030 add_index_long(&array, ap, (int)info_value->u);
2031 }
2032 break;
2033
2034 case TAG_FMT_URATIONAL:
2035 snprintf(buffer, sizeof(buffer), "%i/%i", info_value->ur.num, info_value->ur.den);
2036 if (l==1) {
2037 add_assoc_string(&tmpi, name, buffer);
2038 } else {
2039 add_index_string(&array, ap, buffer);
2040 }
2041 break;
2042
2043 case TAG_FMT_SBYTE:
2044 if (l>1) {
2045 info_value = &info_data->value;
2046 for (b=0;b<l;b++) {
2047 add_index_long(&array, ap, (int)info_value->s[b]);
2048 }
2049 break;
2050 }
2051 case TAG_FMT_SSHORT:
2052 case TAG_FMT_SLONG:
2053 if (l==1) {
2054 add_assoc_long(&tmpi, name, info_value->i);
2055 } else {
2056 add_index_long(&array, ap, info_value->i);
2057 }
2058 break;
2059
2060 case TAG_FMT_SRATIONAL:
2061 snprintf(buffer, sizeof(buffer), "%i/%i", info_value->sr.num, info_value->sr.den);
2062 if (l==1) {
2063 add_assoc_string(&tmpi, name, buffer);
2064 } else {
2065 add_index_string(&array, ap, buffer);
2066 }
2067 break;
2068
2069 case TAG_FMT_SINGLE:
2070 if (l==1) {
2071 add_assoc_double(&tmpi, name, info_value->f);
2072 } else {
2073 add_index_double(&array, ap, info_value->f);
2074 }
2075 break;
2076
2077 case TAG_FMT_DOUBLE:
2078 if (l==1) {
2079 add_assoc_double(&tmpi, name, info_value->d);
2080 } else {
2081 add_index_double(&array, ap, info_value->d);
2082 }
2083 break;
2084 }
2085 info_value = &info_data->value.list[ap];
2086 }
2087 if (l>1) {
2088 add_assoc_zval(&tmpi, name, &array);
2089 }
2090 break;
2091 }
2092 }
2093 }
2094 if (sub_array) {
2095 add_assoc_zval(value, exif_get_sectionname(section_index), &tmpi);
2096 }
2097 }
2098 }
2099 /* }}} */
2100
2101 /* {{{ Markers
2102 JPEG markers consist of one or more 0xFF bytes, followed by a marker
2103 code byte (which is not an FF). Here are the marker codes of interest
2104 in this program. (See jdmarker.c for a more complete list.)
2105 */
2106
2107 #define M_TEM 0x01 /* temp for arithmetic coding */
2108 #define M_RES 0x02 /* reserved */
2109 #define M_SOF0 0xC0 /* Start Of Frame N */
2110 #define M_SOF1 0xC1 /* N indicates which compression process */
2111 #define M_SOF2 0xC2 /* Only SOF0-SOF2 are now in common use */
2112 #define M_SOF3 0xC3
2113 #define M_DHT 0xC4
2114 #define M_SOF5 0xC5 /* NB: codes C4 and CC are NOT SOF markers */
2115 #define M_SOF6 0xC6
2116 #define M_SOF7 0xC7
2117 #define M_JPEG 0x08 /* reserved for extensions */
2118 #define M_SOF9 0xC9
2119 #define M_SOF10 0xCA
2120 #define M_SOF11 0xCB
2121 #define M_DAC 0xCC /* arithmetic table */
2122 #define M_SOF13 0xCD
2123 #define M_SOF14 0xCE
2124 #define M_SOF15 0xCF
2125 #define M_RST0 0xD0 /* restart segment */
2126 #define M_RST1 0xD1
2127 #define M_RST2 0xD2
2128 #define M_RST3 0xD3
2129 #define M_RST4 0xD4
2130 #define M_RST5 0xD5
2131 #define M_RST6 0xD6
2132 #define M_RST7 0xD7
2133 #define M_SOI 0xD8 /* Start Of Image (beginning of datastream) */
2134 #define M_EOI 0xD9 /* End Of Image (end of datastream) */
2135 #define M_SOS 0xDA /* Start Of Scan (begins compressed data) */
2136 #define M_DQT 0xDB
2137 #define M_DNL 0xDC
2138 #define M_DRI 0xDD
2139 #define M_DHP 0xDE
2140 #define M_EXP 0xDF
2141 #define M_APP0 0xE0 /* JPEG: 'JFIFF' AND (additional 'JFXX') */
2142 #define M_EXIF 0xE1 /* Exif Attribute Information */
2143 #define M_APP2 0xE2 /* Flash Pix Extension Data? */
2144 #define M_APP3 0xE3
2145 #define M_APP4 0xE4
2146 #define M_APP5 0xE5
2147 #define M_APP6 0xE6
2148 #define M_APP7 0xE7
2149 #define M_APP8 0xE8
2150 #define M_APP9 0xE9
2151 #define M_APP10 0xEA
2152 #define M_APP11 0xEB
2153 #define M_APP12 0xEC
2154 #define M_APP13 0xED /* IPTC International Press Telecommunications Council */
2155 #define M_APP14 0xEE /* Software, Copyright? */
2156 #define M_APP15 0xEF
2157 #define M_JPG0 0xF0
2158 #define M_JPG1 0xF1
2159 #define M_JPG2 0xF2
2160 #define M_JPG3 0xF3
2161 #define M_JPG4 0xF4
2162 #define M_JPG5 0xF5
2163 #define M_JPG6 0xF6
2164 #define M_JPG7 0xF7
2165 #define M_JPG8 0xF8
2166 #define M_JPG9 0xF9
2167 #define M_JPG10 0xFA
2168 #define M_JPG11 0xFB
2169 #define M_JPG12 0xFC
2170 #define M_JPG13 0xFD
2171 #define M_COM 0xFE /* COMment */
2172
2173 #define M_PSEUDO 0x123 /* Extra value. */
2174
2175 /* }}} */
2176
2177 /* {{{ jpeg2000 markers
2178 */
2179 /* Markers x30 - x3F do not have a segment */
2180 /* Markers x00, x01, xFE, xC0 - xDF ISO/IEC 10918-1 -> M_<xx> */
2181 /* Markers xF0 - xF7 ISO/IEC 10918-3 */
2182 /* Markers xF7 - xF8 ISO/IEC 14495-1 */
2183 /* XY=Main/Tile-header:(R:required, N:not_allowed, O:optional, L:last_marker) */
2184 #define JC_SOC 0x4F /* NN, Start of codestream */
2185 #define JC_SIZ 0x51 /* RN, Image and tile size */
2186 #define JC_COD 0x52 /* RO, Codeing style defaulte */
2187 #define JC_COC 0x53 /* OO, Coding style component */
2188 #define JC_TLM 0x55 /* ON, Tile part length main header */
2189 #define JC_PLM 0x57 /* ON, Packet length main header */
2190 #define JC_PLT 0x58 /* NO, Packet length tile part header */
2191 #define JC_QCD 0x5C /* RO, Quantization default */
2192 #define JC_QCC 0x5D /* OO, Quantization component */
2193 #define JC_RGN 0x5E /* OO, Region of interest */
2194 #define JC_POD 0x5F /* OO, Progression order default */
2195 #define JC_PPM 0x60 /* ON, Packed packet headers main header */
2196 #define JC_PPT 0x61 /* NO, Packet packet headers tile part header */
2197 #define JC_CME 0x64 /* OO, Comment: "LL E <text>" E=0:binary, E=1:ascii */
2198 #define JC_SOT 0x90 /* NR, Start of tile */
2199 #define JC_SOP 0x91 /* NO, Start of packeter default */
2200 #define JC_EPH 0x92 /* NO, End of packet header */
2201 #define JC_SOD 0x93 /* NL, Start of data */
2202 #define JC_EOC 0xD9 /* NN, End of codestream */
2203 /* }}} */
2204
2205 /* {{{ exif_process_COM
2206 Process a COM marker.
2207 We want to print out the marker contents as legible text;
2208 we must guard against random junk and varying newline representations.
2209 */
exif_process_COM(image_info_type * image_info,char * value,size_t length)2210 static void exif_process_COM (image_info_type *image_info, char *value, size_t length)
2211 {
2212 exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length-2, value+2);
2213 }
2214 /* }}} */
2215
2216 /* {{{ exif_process_CME
2217 Process a CME marker.
2218 We want to print out the marker contents as legible text;
2219 we must guard against random junk and varying newline representations.
2220 */
2221 #ifdef EXIF_JPEG2000
exif_process_CME(image_info_type * image_info,char * value,size_t length)2222 static void exif_process_CME (image_info_type *image_info, char *value, size_t length)
2223 {
2224 if (length>3) {
2225 switch(value[2]) {
2226 case 0:
2227 exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, length, value);
2228 break;
2229 case 1:
2230 exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length, value);
2231 break;
2232 default:
2233 php_error_docref(NULL, E_NOTICE, "Undefined JPEG2000 comment encoding");
2234 break;
2235 }
2236 } else {
2237 exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, 0, NULL);
2238 php_error_docref(NULL, E_NOTICE, "JPEG2000 comment section too small");
2239 }
2240 }
2241 #endif
2242 /* }}} */
2243
2244 /* {{{ exif_process_SOFn
2245 * Process a SOFn marker. This is useful for the image dimensions */
exif_process_SOFn(uchar * Data,int marker,jpeg_sof_info * result)2246 static void exif_process_SOFn (uchar *Data, int marker, jpeg_sof_info *result)
2247 {
2248 /* 0xFF SOSn SectLen(2) Bits(1) Height(2) Width(2) Channels(1) 3*Channels (1) */
2249 result->bits_per_sample = Data[2];
2250 result->height = php_jpg_get16(Data+3);
2251 result->width = php_jpg_get16(Data+5);
2252 result->num_components = Data[7];
2253
2254 /* switch (marker) {
2255 case M_SOF0: process = "Baseline"; break;
2256 case M_SOF1: process = "Extended sequential"; break;
2257 case M_SOF2: process = "Progressive"; break;
2258 case M_SOF3: process = "Lossless"; break;
2259 case M_SOF5: process = "Differential sequential"; break;
2260 case M_SOF6: process = "Differential progressive"; break;
2261 case M_SOF7: process = "Differential lossless"; break;
2262 case M_SOF9: process = "Extended sequential, arithmetic coding"; break;
2263 case M_SOF10: process = "Progressive, arithmetic coding"; break;
2264 case M_SOF11: process = "Lossless, arithmetic coding"; break;
2265 case M_SOF13: process = "Differential sequential, arithmetic coding"; break;
2266 case M_SOF14: process = "Differential progressive, arithmetic coding"; break;
2267 case M_SOF15: process = "Differential lossless, arithmetic coding"; break;
2268 default: process = "Unknown"; break;
2269 }*/
2270 }
2271 /* }}} */
2272
2273 /* forward declarations */
2274 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);
2275 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);
2276
2277 /* {{{ exif_get_markername
2278 Get name of marker */
2279 #ifdef EXIF_DEBUG
exif_get_markername(int marker)2280 static char * exif_get_markername(int marker)
2281 {
2282 switch(marker) {
2283 case 0xC0: return "SOF0";
2284 case 0xC1: return "SOF1";
2285 case 0xC2: return "SOF2";
2286 case 0xC3: return "SOF3";
2287 case 0xC4: return "DHT";
2288 case 0xC5: return "SOF5";
2289 case 0xC6: return "SOF6";
2290 case 0xC7: return "SOF7";
2291 case 0xC9: return "SOF9";
2292 case 0xCA: return "SOF10";
2293 case 0xCB: return "SOF11";
2294 case 0xCD: return "SOF13";
2295 case 0xCE: return "SOF14";
2296 case 0xCF: return "SOF15";
2297 case 0xD8: return "SOI";
2298 case 0xD9: return "EOI";
2299 case 0xDA: return "SOS";
2300 case 0xDB: return "DQT";
2301 case 0xDC: return "DNL";
2302 case 0xDD: return "DRI";
2303 case 0xDE: return "DHP";
2304 case 0xDF: return "EXP";
2305 case 0xE0: return "APP0";
2306 case 0xE1: return "EXIF";
2307 case 0xE2: return "FPIX";
2308 case 0xE3: return "APP3";
2309 case 0xE4: return "APP4";
2310 case 0xE5: return "APP5";
2311 case 0xE6: return "APP6";
2312 case 0xE7: return "APP7";
2313 case 0xE8: return "APP8";
2314 case 0xE9: return "APP9";
2315 case 0xEA: return "APP10";
2316 case 0xEB: return "APP11";
2317 case 0xEC: return "APP12";
2318 case 0xED: return "APP13";
2319 case 0xEE: return "APP14";
2320 case 0xEF: return "APP15";
2321 case 0xF0: return "JPG0";
2322 case 0xFD: return "JPG13";
2323 case 0xFE: return "COM";
2324 case 0x01: return "TEM";
2325 }
2326 return "Unknown";
2327 }
2328 #endif
2329 /* }}} */
2330
2331 /* {{{ proto string exif_tagname(int index)
2332 Get headername for index or false if not defined */
PHP_FUNCTION(exif_tagname)2333 PHP_FUNCTION(exif_tagname)
2334 {
2335 zend_long tag;
2336 char *szTemp;
2337
2338 if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &tag) == FAILURE) {
2339 return;
2340 }
2341
2342 szTemp = exif_get_tagname(tag, NULL, 0, tag_table_IFD);
2343
2344 if (tag < 0 || !szTemp || !szTemp[0]) {
2345 RETURN_FALSE;
2346 }
2347
2348 RETURN_STRING(szTemp)
2349 }
2350 /* }}} */
2351
2352 /* {{{ exif_ifd_make_value
2353 * Create a value for an ifd from an info_data pointer */
exif_ifd_make_value(image_info_data * info_data,int motorola_intel)2354 static void* exif_ifd_make_value(image_info_data *info_data, int motorola_intel) {
2355 size_t byte_count;
2356 char *value_ptr, *data_ptr;
2357 size_t i;
2358
2359 image_info_value *info_value;
2360
2361 byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
2362 value_ptr = safe_emalloc(max(byte_count, 4), 1, 0);
2363 memset(value_ptr, 0, 4);
2364 if (!info_data->length) {
2365 return value_ptr;
2366 }
2367 if (info_data->format == TAG_FMT_UNDEFINED || info_data->format == TAG_FMT_STRING
2368 || (byte_count>1 && (info_data->format == TAG_FMT_BYTE || info_data->format == TAG_FMT_SBYTE))
2369 ) {
2370 memmove(value_ptr, info_data->value.s, byte_count);
2371 return value_ptr;
2372 } else if (info_data->format == TAG_FMT_BYTE) {
2373 *value_ptr = info_data->value.u;
2374 return value_ptr;
2375 } else if (info_data->format == TAG_FMT_SBYTE) {
2376 *value_ptr = info_data->value.i;
2377 return value_ptr;
2378 } else {
2379 data_ptr = value_ptr;
2380 for(i=0; i<info_data->length; i++) {
2381 if (info_data->length==1) {
2382 info_value = &info_data->value;
2383 } else {
2384 info_value = &info_data->value.list[i];
2385 }
2386 switch(info_data->format) {
2387 case TAG_FMT_USHORT:
2388 php_ifd_set16u(data_ptr, info_value->u, motorola_intel);
2389 data_ptr += 2;
2390 break;
2391 case TAG_FMT_ULONG:
2392 php_ifd_set32u(data_ptr, info_value->u, motorola_intel);
2393 data_ptr += 4;
2394 break;
2395 case TAG_FMT_SSHORT:
2396 php_ifd_set16u(data_ptr, info_value->i, motorola_intel);
2397 data_ptr += 2;
2398 break;
2399 case TAG_FMT_SLONG:
2400 php_ifd_set32u(data_ptr, info_value->i, motorola_intel);
2401 data_ptr += 4;
2402 break;
2403 case TAG_FMT_URATIONAL:
2404 php_ifd_set32u(data_ptr, info_value->sr.num, motorola_intel);
2405 php_ifd_set32u(data_ptr+4, info_value->sr.den, motorola_intel);
2406 data_ptr += 8;
2407 break;
2408 case TAG_FMT_SRATIONAL:
2409 php_ifd_set32u(data_ptr, info_value->ur.num, motorola_intel);
2410 php_ifd_set32u(data_ptr+4, info_value->ur.den, motorola_intel);
2411 data_ptr += 8;
2412 break;
2413 case TAG_FMT_SINGLE:
2414 memmove(data_ptr, &info_value->f, 4);
2415 data_ptr += 4;
2416 break;
2417 case TAG_FMT_DOUBLE:
2418 memmove(data_ptr, &info_value->d, 8);
2419 data_ptr += 8;
2420 break;
2421 }
2422 }
2423 }
2424 return value_ptr;
2425 }
2426 /* }}} */
2427
2428 /* {{{ exif_thumbnail_build
2429 * Check and build thumbnail */
exif_thumbnail_build(image_info_type * ImageInfo)2430 static void exif_thumbnail_build(image_info_type *ImageInfo) {
2431 size_t new_size, new_move, new_value;
2432 char *new_data;
2433 void *value_ptr;
2434 int i, byte_count;
2435 image_info_list *info_list;
2436 image_info_data *info_data;
2437 #ifdef EXIF_DEBUG
2438 char tagname[64];
2439 #endif
2440
2441 if (!ImageInfo->read_thumbnail || !ImageInfo->Thumbnail.offset || !ImageInfo->Thumbnail.size) {
2442 return; /* ignore this call */
2443 }
2444 #ifdef EXIF_DEBUG
2445 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: filetype = %d", ImageInfo->Thumbnail.filetype);
2446 #endif
2447 switch(ImageInfo->Thumbnail.filetype) {
2448 default:
2449 case IMAGE_FILETYPE_JPEG:
2450 /* done */
2451 break;
2452 case IMAGE_FILETYPE_TIFF_II:
2453 case IMAGE_FILETYPE_TIFF_MM:
2454 info_list = &ImageInfo->info_list[SECTION_THUMBNAIL];
2455 new_size = 8 + 2 + info_list->count * 12 + 4;
2456 #ifdef EXIF_DEBUG
2457 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: size of signature + directory(%d): 0x%02X", info_list->count, new_size);
2458 #endif
2459 new_value= new_size; /* offset for ifd values outside ifd directory */
2460 for (i=0; i<info_list->count; i++) {
2461 info_data = &info_list->list[i];
2462 byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
2463 if (byte_count > 4) {
2464 new_size += byte_count;
2465 }
2466 }
2467 new_move = new_size;
2468 new_data = safe_erealloc(ImageInfo->Thumbnail.data, 1, ImageInfo->Thumbnail.size, new_size);
2469 ImageInfo->Thumbnail.data = new_data;
2470 memmove(ImageInfo->Thumbnail.data + new_move, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
2471 ImageInfo->Thumbnail.size += new_size;
2472 /* fill in data */
2473 if (ImageInfo->motorola_intel) {
2474 memmove(new_data, "MM\x00\x2a\x00\x00\x00\x08", 8);
2475 } else {
2476 memmove(new_data, "II\x2a\x00\x08\x00\x00\x00", 8);
2477 }
2478 new_data += 8;
2479 php_ifd_set16u(new_data, info_list->count, ImageInfo->motorola_intel);
2480 new_data += 2;
2481 for (i=0; i<info_list->count; i++) {
2482 info_data = &info_list->list[i];
2483 byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
2484 #ifdef EXIF_DEBUG
2485 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: process tag(x%04X=%s): %s%s (%d bytes)", info_data->tag, exif_get_tagname(info_data->tag, tagname, -12, tag_table_IFD), (info_data->length>1)&&info_data->format!=TAG_FMT_UNDEFINED&&info_data->format!=TAG_FMT_STRING?"ARRAY OF ":"", exif_get_tagformat(info_data->format), byte_count);
2486 #endif
2487 if (info_data->tag==TAG_STRIP_OFFSETS || info_data->tag==TAG_JPEG_INTERCHANGE_FORMAT) {
2488 php_ifd_set16u(new_data + 0, info_data->tag, ImageInfo->motorola_intel);
2489 php_ifd_set16u(new_data + 2, TAG_FMT_ULONG, ImageInfo->motorola_intel);
2490 php_ifd_set32u(new_data + 4, 1, ImageInfo->motorola_intel);
2491 php_ifd_set32u(new_data + 8, new_move, ImageInfo->motorola_intel);
2492 } else {
2493 php_ifd_set16u(new_data + 0, info_data->tag, ImageInfo->motorola_intel);
2494 php_ifd_set16u(new_data + 2, info_data->format, ImageInfo->motorola_intel);
2495 php_ifd_set32u(new_data + 4, info_data->length, ImageInfo->motorola_intel);
2496 value_ptr = exif_ifd_make_value(info_data, ImageInfo->motorola_intel);
2497 if (byte_count <= 4) {
2498 memmove(new_data+8, value_ptr, 4);
2499 } else {
2500 php_ifd_set32u(new_data+8, new_value, ImageInfo->motorola_intel);
2501 #ifdef EXIF_DEBUG
2502 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: writing with value offset: 0x%04X + 0x%02X", new_value, byte_count);
2503 #endif
2504 memmove(ImageInfo->Thumbnail.data+new_value, value_ptr, byte_count);
2505 new_value += byte_count;
2506 }
2507 efree(value_ptr);
2508 }
2509 new_data += 12;
2510 }
2511 memset(new_data, 0, 4); /* next ifd pointer */
2512 #ifdef EXIF_DEBUG
2513 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: created");
2514 #endif
2515 break;
2516 }
2517 }
2518 /* }}} */
2519
2520 /* {{{ exif_thumbnail_extract
2521 * Grab the thumbnail, corrected */
exif_thumbnail_extract(image_info_type * ImageInfo,char * offset,size_t length)2522 static void exif_thumbnail_extract(image_info_type *ImageInfo, char *offset, size_t length) {
2523 if (ImageInfo->Thumbnail.data) {
2524 exif_error_docref("exif_read_data#error_mult_thumb" EXIFERR_CC, ImageInfo, E_WARNING, "Multiple possible thumbnails");
2525 return; /* Should not happen */
2526 }
2527 if (!ImageInfo->read_thumbnail) {
2528 return; /* ignore this call */
2529 }
2530 /* according to exif2.1, the thumbnail is not supposed to be greater than 64K */
2531 if (ImageInfo->Thumbnail.size >= 65536
2532 || ImageInfo->Thumbnail.size <= 0
2533 || ImageInfo->Thumbnail.offset <= 0
2534 ) {
2535 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Illegal thumbnail size/offset");
2536 return;
2537 }
2538 /* Check to make sure we are not going to go past the ExifLength */
2539 if (ImageInfo->Thumbnail.size > length
2540 || (ImageInfo->Thumbnail.offset + ImageInfo->Thumbnail.size) > length
2541 || ImageInfo->Thumbnail.offset > length - ImageInfo->Thumbnail.size
2542 ) {
2543 EXIF_ERRLOG_THUMBEOF(ImageInfo)
2544 return;
2545 }
2546 ImageInfo->Thumbnail.data = estrndup(offset + ImageInfo->Thumbnail.offset, ImageInfo->Thumbnail.size);
2547 exif_thumbnail_build(ImageInfo);
2548 }
2549 /* }}} */
2550
2551 /* {{{ exif_process_undefined
2552 * 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)2553 static int exif_process_undefined(char **result, char *value, size_t byte_count) {
2554 /* we cannot use strlcpy - here the problem is that we have to copy NUL
2555 * chars up to byte_count, we also have to add a single NUL character to
2556 * force end of string.
2557 * estrndup does not return length
2558 */
2559 if (byte_count) {
2560 (*result) = estrndup(value, byte_count); /* NULL @ byte_count!!! */
2561 return byte_count+1;
2562 }
2563 return 0;
2564 }
2565 /* }}} */
2566
2567 /* {{{ exif_process_string_raw
2568 * 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)2569 static int exif_process_string_raw(char **result, char *value, size_t byte_count) {
2570 /* we cannot use strlcpy - here the problem is that we have to copy NUL
2571 * chars up to byte_count, we also have to add a single NUL character to
2572 * force end of string.
2573 */
2574 if (byte_count) {
2575 (*result) = safe_emalloc(byte_count, 1, 1);
2576 memcpy(*result, value, byte_count);
2577 (*result)[byte_count] = '\0';
2578 return byte_count+1;
2579 }
2580 return 0;
2581 }
2582 /* }}} */
2583
2584 /* {{{ exif_process_string
2585 * Copy a string in Exif header to a character string and return length of allocated buffer if any.
2586 * 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)2587 static int exif_process_string(char **result, char *value, size_t byte_count) {
2588 /* we cannot use strlcpy - here the problem is that we cannot use strlen to
2589 * determin length of string and we cannot use strlcpy with len=byte_count+1
2590 * because then we might get into an EXCEPTION if we exceed an allocated
2591 * memory page...so we use php_strnlen in conjunction with memcpy and add the NUL
2592 * char.
2593 * estrdup would sometimes allocate more memory and does not return length
2594 */
2595 if ((byte_count=php_strnlen(value, byte_count)) > 0) {
2596 return exif_process_undefined(result, value, byte_count);
2597 }
2598 (*result) = estrndup("", 1); /* force empty string */
2599 return byte_count+1;
2600 }
2601 /* }}} */
2602
2603 /* {{{ exif_process_user_comment
2604 * Process UserComment in IFD. */
exif_process_user_comment(image_info_type * ImageInfo,char ** pszInfoPtr,char ** pszEncoding,char * szValuePtr,int ByteCount)2605 static int exif_process_user_comment(image_info_type *ImageInfo, char **pszInfoPtr, char **pszEncoding, char *szValuePtr, int ByteCount)
2606 {
2607 int a;
2608 char *decode;
2609 size_t len;;
2610
2611 *pszEncoding = NULL;
2612 /* Copy the comment */
2613 if (ByteCount>=8) {
2614 const zend_encoding *from, *to;
2615 if (!memcmp(szValuePtr, "UNICODE\0", 8)) {
2616 *pszEncoding = estrdup((const char*)szValuePtr);
2617 szValuePtr = szValuePtr+8;
2618 ByteCount -= 8;
2619 /* First try to detect BOM: ZERO WIDTH NOBREAK SPACE (FEFF 16)
2620 * since we have no encoding support for the BOM yet we skip that.
2621 */
2622 if (!memcmp(szValuePtr, "\xFE\xFF", 2)) {
2623 decode = "UCS-2BE";
2624 szValuePtr = szValuePtr+2;
2625 ByteCount -= 2;
2626 } else if (!memcmp(szValuePtr, "\xFF\xFE", 2)) {
2627 decode = "UCS-2LE";
2628 szValuePtr = szValuePtr+2;
2629 ByteCount -= 2;
2630 } else if (ImageInfo->motorola_intel) {
2631 decode = ImageInfo->decode_unicode_be;
2632 } else {
2633 decode = ImageInfo->decode_unicode_le;
2634 }
2635 to = zend_multibyte_fetch_encoding(ImageInfo->encode_unicode);
2636 from = zend_multibyte_fetch_encoding(decode);
2637 /* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX */
2638 if (!to || !from || zend_multibyte_encoding_converter(
2639 (unsigned char**)pszInfoPtr,
2640 &len,
2641 (unsigned char*)szValuePtr,
2642 ByteCount,
2643 to,
2644 from) == (size_t)-1) {
2645 len = exif_process_string_raw(pszInfoPtr, szValuePtr, ByteCount);
2646 }
2647 return len;
2648 } else if (!memcmp(szValuePtr, "ASCII\0\0\0", 8)) {
2649 *pszEncoding = estrdup((const char*)szValuePtr);
2650 szValuePtr = szValuePtr+8;
2651 ByteCount -= 8;
2652 } else if (!memcmp(szValuePtr, "JIS\0\0\0\0\0", 8)) {
2653 /* JIS should be tanslated to MB or we leave it to the user - leave it to the user */
2654 *pszEncoding = estrdup((const char*)szValuePtr);
2655 szValuePtr = szValuePtr+8;
2656 ByteCount -= 8;
2657 /* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX */
2658 to = zend_multibyte_fetch_encoding(ImageInfo->encode_jis);
2659 from = zend_multibyte_fetch_encoding(ImageInfo->motorola_intel ? ImageInfo->decode_jis_be : ImageInfo->decode_jis_le);
2660 if (!to || !from || zend_multibyte_encoding_converter(
2661 (unsigned char**)pszInfoPtr,
2662 &len,
2663 (unsigned char*)szValuePtr,
2664 ByteCount,
2665 to,
2666 from) == (size_t)-1) {
2667 len = exif_process_string_raw(pszInfoPtr, szValuePtr, ByteCount);
2668 }
2669 return len;
2670 } else if (!memcmp(szValuePtr, "\0\0\0\0\0\0\0\0", 8)) {
2671 /* 8 NULL means undefined and should be ASCII... */
2672 *pszEncoding = estrdup("UNDEFINED");
2673 szValuePtr = szValuePtr+8;
2674 ByteCount -= 8;
2675 }
2676 }
2677
2678 /* Olympus has this padded with trailing spaces. Remove these first. */
2679 if (ByteCount>0) {
2680 for (a=ByteCount-1;a && szValuePtr[a]==' ';a--) {
2681 (szValuePtr)[a] = '\0';
2682 }
2683 }
2684
2685 /* normal text without encoding */
2686 exif_process_string(pszInfoPtr, szValuePtr, ByteCount);
2687 return strlen(*pszInfoPtr);
2688 }
2689 /* }}} */
2690
2691 /* {{{ exif_process_unicode
2692 * Process unicode field in IFD. */
exif_process_unicode(image_info_type * ImageInfo,xp_field_type * xp_field,int tag,char * szValuePtr,int ByteCount)2693 static int exif_process_unicode(image_info_type *ImageInfo, xp_field_type *xp_field, int tag, char *szValuePtr, int ByteCount)
2694 {
2695 xp_field->tag = tag;
2696 xp_field->value = NULL;
2697 /* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX */
2698 if (zend_multibyte_encoding_converter(
2699 (unsigned char**)&xp_field->value,
2700 &xp_field->size,
2701 (unsigned char*)szValuePtr,
2702 ByteCount,
2703 zend_multibyte_fetch_encoding(ImageInfo->encode_unicode),
2704 zend_multibyte_fetch_encoding(ImageInfo->motorola_intel ? ImageInfo->decode_unicode_be : ImageInfo->decode_unicode_le)
2705 ) == (size_t)-1) {
2706 xp_field->size = exif_process_string_raw(&xp_field->value, szValuePtr, ByteCount);
2707 }
2708 return xp_field->size;
2709 }
2710 /* }}} */
2711
2712 /* {{{ exif_process_IFD_in_MAKERNOTE
2713 * 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)2714 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)
2715 {
2716 int de, i=0, section_index = SECTION_MAKERNOTE;
2717 int NumDirEntries, old_motorola_intel, offset_diff;
2718 const maker_note_type *maker_note;
2719 char *dir_start;
2720 int data_len;
2721
2722 for (i=0; i<=sizeof(maker_note_array)/sizeof(maker_note_type); i++) {
2723 if (i==sizeof(maker_note_array)/sizeof(maker_note_type)) {
2724 #ifdef EXIF_DEBUG
2725 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "No maker note data found. Detected maker: %s (length = %d)", ImageInfo->make, strlen(ImageInfo->make));
2726 #endif
2727 /* unknown manufacturer, not an error, use it as a string */
2728 return TRUE;
2729 }
2730
2731 maker_note = maker_note_array+i;
2732
2733 /*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "check (%s,%s)", maker_note->make?maker_note->make:"", maker_note->model?maker_note->model:"");*/
2734 if (maker_note->make && (!ImageInfo->make || strcmp(maker_note->make, ImageInfo->make)))
2735 continue;
2736 if (maker_note->model && (!ImageInfo->model || strcmp(maker_note->model, ImageInfo->model)))
2737 continue;
2738 if (maker_note->id_string && strncmp(maker_note->id_string, value_ptr, maker_note->id_string_len))
2739 continue;
2740 break;
2741 }
2742
2743 if (maker_note->offset >= value_len) {
2744 /* Do not go past the value end */
2745 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "IFD data too short: 0x%04X offset 0x%04X", value_len, maker_note->offset);
2746 return FALSE;
2747 }
2748
2749 dir_start = value_ptr + maker_note->offset;
2750
2751 #ifdef EXIF_DEBUG
2752 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));
2753 #endif
2754
2755 ImageInfo->sections_found |= FOUND_MAKERNOTE;
2756
2757 old_motorola_intel = ImageInfo->motorola_intel;
2758 switch (maker_note->byte_order) {
2759 case MN_ORDER_INTEL:
2760 ImageInfo->motorola_intel = 0;
2761 break;
2762 case MN_ORDER_MOTOROLA:
2763 ImageInfo->motorola_intel = 1;
2764 break;
2765 default:
2766 case MN_ORDER_NORMAL:
2767 break;
2768 }
2769
2770 NumDirEntries = php_ifd_get16u(dir_start, ImageInfo->motorola_intel);
2771
2772 switch (maker_note->offset_mode) {
2773 case MN_OFFSET_MAKER:
2774 offset_base = value_ptr;
2775 data_len = value_len;
2776 break;
2777 case MN_OFFSET_GUESS:
2778 if (maker_note->offset + 10 + 4 >= value_len) {
2779 /* Can not read dir_start+10 since it's beyond value end */
2780 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "IFD data too short: 0x%04X", value_len);
2781 return FALSE;
2782 }
2783 offset_diff = 2 + NumDirEntries*12 + 4 - php_ifd_get32u(dir_start+10, ImageInfo->motorola_intel);
2784 #ifdef EXIF_DEBUG
2785 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);
2786 #endif
2787 if (offset_diff < 0 || offset_diff >= value_len ) {
2788 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "IFD data bad offset: 0x%04X length 0x%04X", offset_diff, value_len);
2789 return FALSE;
2790 }
2791 offset_base = value_ptr + offset_diff;
2792 data_len = value_len - offset_diff;
2793 break;
2794 default:
2795 case MN_OFFSET_NORMAL:
2796 break;
2797 }
2798
2799 if ((2+NumDirEntries*12) > value_len) {
2800 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size: 2 + 0x%04X*12 = 0x%04X > 0x%04X", NumDirEntries, 2+NumDirEntries*12, value_len);
2801 return FALSE;
2802 }
2803
2804 for (de=0;de<NumDirEntries;de++) {
2805 if (!exif_process_IFD_TAG(ImageInfo, dir_start + 2 + 12 * de,
2806 offset_base, data_len, displacement, section_index, 0, maker_note->tag_table)) {
2807 return FALSE;
2808 }
2809 }
2810 ImageInfo->motorola_intel = old_motorola_intel;
2811 /* NextDirOffset (must be NULL) = php_ifd_get32u(dir_start+2+12*de, ImageInfo->motorola_intel);*/
2812 #ifdef EXIF_DEBUG
2813 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Subsection %s done", exif_get_sectionname(SECTION_MAKERNOTE));
2814 #endif
2815 return TRUE;
2816 }
2817 /* }}} */
2818
2819 /* {{{ exif_process_IFD_TAG
2820 * 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)2821 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)
2822 {
2823 size_t length;
2824 int tag, format, components;
2825 char *value_ptr, tagname[64], cbuf[32], *outside=NULL;
2826 size_t byte_count, offset_val, fpos, fgot;
2827 int64_t byte_count_signed;
2828 xp_field_type *tmp_xp;
2829 #ifdef EXIF_DEBUG
2830 char *dump_data;
2831 int dump_free;
2832 #endif /* EXIF_DEBUG */
2833
2834 /* Protect against corrupt headers */
2835 if (ImageInfo->ifd_nesting_level > MAX_IFD_NESTING_LEVEL) {
2836 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "corrupt EXIF header: maximum directory nesting level reached");
2837 return FALSE;
2838 }
2839 ImageInfo->ifd_nesting_level++;
2840
2841 tag = php_ifd_get16u(dir_entry, ImageInfo->motorola_intel);
2842 format = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
2843 components = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel);
2844
2845 if (!format || format > NUM_FORMATS) {
2846 /* (-1) catches illegal zero case as unsigned underflows to positive large. */
2847 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal format code 0x%04X, suppose BYTE", tag, exif_get_tagname(tag, tagname, -12, tag_table), format);
2848 format = TAG_FMT_BYTE;
2849 /*return TRUE;*/
2850 }
2851
2852 if (components < 0) {
2853 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal components(%d)", tag, exif_get_tagname(tag, tagname, -12, tag_table), components);
2854 return FALSE;
2855 }
2856
2857 byte_count_signed = (int64_t)components * php_tiff_bytes_per_format[format];
2858
2859 if (byte_count_signed < 0 || (byte_count_signed > INT32_MAX)) {
2860 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));
2861 return FALSE;
2862 }
2863
2864 byte_count = (size_t)byte_count_signed;
2865
2866 if (byte_count > 4) {
2867 offset_val = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
2868 /* If its bigger than 4 bytes, the dir entry contains an offset. */
2869 value_ptr = offset_base+offset_val;
2870 /*
2871 dir_entry is ImageInfo->file.list[sn].data+2+i*12
2872 offset_base is ImageInfo->file.list[sn].data-dir_offset
2873 dir_entry - offset_base is dir_offset+2+i*12
2874 */
2875 if (byte_count > IFDlength || offset_val > IFDlength-byte_count || value_ptr < dir_entry || offset_val < (size_t)(dir_entry-offset_base)) {
2876 /* It is important to check for IMAGE_FILETYPE_TIFF
2877 * JPEG does not use absolute pointers instead its pointers are
2878 * relative to the start of the TIFF header in APP1 section. */
2879 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)) {
2880 if (value_ptr < dir_entry) {
2881 /* we can read this if offset_val > 0 */
2882 /* some files have their values in other parts of the file */
2883 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal pointer offset(x%04X < x%04X)", tag, exif_get_tagname(tag, tagname, -12, tag_table), offset_val, dir_entry);
2884 } else {
2885 /* this is for sure not allowed */
2886 /* exception are IFD pointers */
2887 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal pointer offset(x%04X + x%04X = x%04X > x%04X)", tag, exif_get_tagname(tag, tagname, -12, tag_table), offset_val, byte_count, offset_val+byte_count, IFDlength);
2888 }
2889 return FALSE;
2890 }
2891 if (byte_count>sizeof(cbuf)) {
2892 /* mark as outside range and get buffer */
2893 value_ptr = safe_emalloc(byte_count, 1, 0);
2894 outside = value_ptr;
2895 } else {
2896 /* In most cases we only access a small range so
2897 * it is faster to use a static buffer there
2898 * BUT it offers also the possibility to have
2899 * pointers read without the need to free them
2900 * explicitley before returning. */
2901 memset(&cbuf, 0, sizeof(cbuf));
2902 value_ptr = cbuf;
2903 }
2904
2905 fpos = php_stream_tell(ImageInfo->infile);
2906 php_stream_seek(ImageInfo->infile, displacement+offset_val, SEEK_SET);
2907 fgot = php_stream_tell(ImageInfo->infile);
2908 if (fgot!=displacement+offset_val) {
2909 EFREE_IF(outside);
2910 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Wrong file pointer: 0x%08X != 0x%08X", fgot, displacement+offset_val);
2911 return FALSE;
2912 }
2913 fgot = php_stream_read(ImageInfo->infile, value_ptr, byte_count);
2914 php_stream_seek(ImageInfo->infile, fpos, SEEK_SET);
2915 if (fgot<byte_count) {
2916 EFREE_IF(outside);
2917 EXIF_ERRLOG_FILEEOF(ImageInfo)
2918 return FALSE;
2919 }
2920 }
2921 } else {
2922 /* 4 bytes or less and value is in the dir entry itself */
2923 value_ptr = dir_entry+8;
2924 offset_val= value_ptr-offset_base;
2925 }
2926
2927 ImageInfo->sections_found |= FOUND_ANY_TAG;
2928 #ifdef EXIF_DEBUG
2929 dump_data = exif_dump_data(&dump_free, format, components, length, ImageInfo->motorola_intel, value_ptr);
2930 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process tag(x%04X=%s,@x%04X + x%04X(=%d)): %s%s %s", tag, exif_get_tagname(tag, tagname, -12, tag_table), offset_val+displacement, byte_count, byte_count, (components>1)&&format!=TAG_FMT_UNDEFINED&&format!=TAG_FMT_STRING?"ARRAY OF ":"", exif_get_tagformat(format), dump_data);
2931 if (dump_free) {
2932 efree(dump_data);
2933 }
2934 #endif
2935
2936 if (section_index==SECTION_THUMBNAIL) {
2937 if (!ImageInfo->Thumbnail.data) {
2938 switch(tag) {
2939 case TAG_IMAGEWIDTH:
2940 case TAG_COMP_IMAGE_WIDTH:
2941 ImageInfo->Thumbnail.width = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel);
2942 break;
2943
2944 case TAG_IMAGEHEIGHT:
2945 case TAG_COMP_IMAGE_HEIGHT:
2946 ImageInfo->Thumbnail.height = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel);
2947 break;
2948
2949 case TAG_STRIP_OFFSETS:
2950 case TAG_JPEG_INTERCHANGE_FORMAT:
2951 /* accept both formats */
2952 ImageInfo->Thumbnail.offset = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel);
2953 break;
2954
2955 case TAG_STRIP_BYTE_COUNTS:
2956 if (ImageInfo->FileType == IMAGE_FILETYPE_TIFF_II || ImageInfo->FileType == IMAGE_FILETYPE_TIFF_MM) {
2957 ImageInfo->Thumbnail.filetype = ImageInfo->FileType;
2958 } else {
2959 /* motorola is easier to read */
2960 ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_TIFF_MM;
2961 }
2962 ImageInfo->Thumbnail.size = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel);
2963 break;
2964
2965 case TAG_JPEG_INTERCHANGE_FORMAT_LEN:
2966 if (ImageInfo->Thumbnail.filetype == IMAGE_FILETYPE_UNKNOWN) {
2967 ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_JPEG;
2968 ImageInfo->Thumbnail.size = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel);
2969 }
2970 break;
2971 }
2972 }
2973 } else {
2974 if (section_index==SECTION_IFD0 || section_index==SECTION_EXIF)
2975 switch(tag) {
2976 case TAG_COPYRIGHT:
2977 /* check for "<photographer> NUL <editor> NUL" */
2978 if (byte_count>1 && (length=php_strnlen(value_ptr, byte_count)) > 0) {
2979 if (length<byte_count-1) {
2980 /* When there are any characters after the first NUL */
2981 ImageInfo->CopyrightPhotographer = estrdup(value_ptr);
2982 ImageInfo->CopyrightEditor = estrndup(value_ptr+length+1, byte_count-length-1);
2983 spprintf(&ImageInfo->Copyright, 0, "%s, %s", ImageInfo->CopyrightPhotographer, ImageInfo->CopyrightEditor);
2984 /* format = TAG_FMT_UNDEFINED; this musn't be ASCII */
2985 /* but we are not supposed to change this */
2986 /* keep in mind that image_info does not store editor value */
2987 } else {
2988 ImageInfo->Copyright = estrndup(value_ptr, byte_count);
2989 }
2990 }
2991 break;
2992
2993 case TAG_USERCOMMENT:
2994 ImageInfo->UserCommentLength = exif_process_user_comment(ImageInfo, &(ImageInfo->UserComment), &(ImageInfo->UserCommentEncoding), value_ptr, byte_count);
2995 break;
2996
2997 case TAG_XP_TITLE:
2998 case TAG_XP_COMMENTS:
2999 case TAG_XP_AUTHOR:
3000 case TAG_XP_KEYWORDS:
3001 case TAG_XP_SUBJECT:
3002 tmp_xp = (xp_field_type*)safe_erealloc(ImageInfo->xp_fields.list, (ImageInfo->xp_fields.count+1), sizeof(xp_field_type), 0);
3003 ImageInfo->sections_found |= FOUND_WINXP;
3004 ImageInfo->xp_fields.list = tmp_xp;
3005 ImageInfo->xp_fields.count++;
3006 exif_process_unicode(ImageInfo, &(ImageInfo->xp_fields.list[ImageInfo->xp_fields.count-1]), tag, value_ptr, byte_count);
3007 break;
3008
3009 case TAG_FNUMBER:
3010 /* Simplest way of expressing aperture, so I trust it the most.
3011 (overwrite previously computed value if there is one) */
3012 ImageInfo->ApertureFNumber = (float)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel);
3013 break;
3014
3015 case TAG_APERTURE:
3016 case TAG_MAX_APERTURE:
3017 /* More relevant info always comes earlier, so only use this field if we don't
3018 have appropriate aperture information yet. */
3019 if (ImageInfo->ApertureFNumber == 0) {
3020 ImageInfo->ApertureFNumber
3021 = (float)exp(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel)*log(2)*0.5);
3022 }
3023 break;
3024
3025 case TAG_SHUTTERSPEED:
3026 /* More complicated way of expressing exposure time, so only use
3027 this value if we don't already have it from somewhere else.
3028 SHUTTERSPEED comes after EXPOSURE TIME
3029 */
3030 if (ImageInfo->ExposureTime == 0) {
3031 ImageInfo->ExposureTime
3032 = (float)(1/exp(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel)*log(2)));
3033 }
3034 break;
3035 case TAG_EXPOSURETIME:
3036 ImageInfo->ExposureTime = -1;
3037 break;
3038
3039 case TAG_COMP_IMAGE_WIDTH:
3040 ImageInfo->ExifImageWidth = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel);
3041 break;
3042
3043 case TAG_FOCALPLANE_X_RES:
3044 ImageInfo->FocalplaneXRes = exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel);
3045 break;
3046
3047 case TAG_SUBJECT_DISTANCE:
3048 /* Inidcates the distacne the autofocus camera is focused to.
3049 Tends to be less accurate as distance increases. */
3050 ImageInfo->Distance = (float)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel);
3051 break;
3052
3053 case TAG_FOCALPLANE_RESOLUTION_UNIT:
3054 switch((int)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel)) {
3055 case 1: ImageInfo->FocalplaneUnits = 25.4; break; /* inch */
3056 case 2:
3057 /* According to the information I was using, 2 measn meters.
3058 But looking at the Cannon powershot's files, inches is the only
3059 sensible value. */
3060 ImageInfo->FocalplaneUnits = 25.4;
3061 break;
3062
3063 case 3: ImageInfo->FocalplaneUnits = 10; break; /* centimeter */
3064 case 4: ImageInfo->FocalplaneUnits = 1; break; /* milimeter */
3065 case 5: ImageInfo->FocalplaneUnits = .001; break; /* micrometer */
3066 }
3067 break;
3068
3069 case TAG_SUB_IFD:
3070 if (format==TAG_FMT_IFD) {
3071 /* If this is called we are either in a TIFFs thumbnail or a JPEG where we cannot handle it */
3072 /* TIFF thumbnail: our data structure cannot store a thumbnail of a thumbnail */
3073 /* JPEG do we have the data area and what to do with it */
3074 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Skip SUB IFD");
3075 }
3076 break;
3077
3078 case TAG_MAKE:
3079 ImageInfo->make = estrndup(value_ptr, byte_count);
3080 break;
3081 case TAG_MODEL:
3082 ImageInfo->model = estrndup(value_ptr, byte_count);
3083 break;
3084
3085 case TAG_MAKER_NOTE:
3086 if (!exif_process_IFD_in_MAKERNOTE(ImageInfo, value_ptr, byte_count, offset_base, IFDlength, displacement)) {
3087 EFREE_IF(outside);
3088 return FALSE;
3089 }
3090 break;
3091
3092 case TAG_EXIF_IFD_POINTER:
3093 case TAG_GPS_IFD_POINTER:
3094 case TAG_INTEROP_IFD_POINTER:
3095 if (ReadNextIFD) {
3096 char *Subdir_start;
3097 int sub_section_index = 0;
3098 switch(tag) {
3099 case TAG_EXIF_IFD_POINTER:
3100 #ifdef EXIF_DEBUG
3101 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found EXIF");
3102 #endif
3103 ImageInfo->sections_found |= FOUND_EXIF;
3104 sub_section_index = SECTION_EXIF;
3105 break;
3106 case TAG_GPS_IFD_POINTER:
3107 #ifdef EXIF_DEBUG
3108 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found GPS");
3109 #endif
3110 ImageInfo->sections_found |= FOUND_GPS;
3111 sub_section_index = SECTION_GPS;
3112 break;
3113 case TAG_INTEROP_IFD_POINTER:
3114 #ifdef EXIF_DEBUG
3115 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found INTEROPERABILITY");
3116 #endif
3117 ImageInfo->sections_found |= FOUND_INTEROP;
3118 sub_section_index = SECTION_INTEROP;
3119 break;
3120 }
3121 Subdir_start = offset_base + php_ifd_get32u(value_ptr, ImageInfo->motorola_intel);
3122 if (Subdir_start < offset_base || Subdir_start > offset_base+IFDlength) {
3123 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD Pointer");
3124 return FALSE;
3125 }
3126 if (!exif_process_IFD_in_JPEG(ImageInfo, Subdir_start, offset_base, IFDlength, displacement, sub_section_index)) {
3127 return FALSE;
3128 }
3129 #ifdef EXIF_DEBUG
3130 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Subsection %s done", exif_get_sectionname(sub_section_index));
3131 #endif
3132 }
3133 }
3134 }
3135 exif_iif_add_tag(ImageInfo, section_index, exif_get_tagname(tag, tagname, sizeof(tagname), tag_table), tag, format, components, value_ptr);
3136 EFREE_IF(outside);
3137 return TRUE;
3138 }
3139 /* }}} */
3140
3141 /* {{{ exif_process_IFD_in_JPEG
3142 * 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)3143 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)
3144 {
3145 int de;
3146 int NumDirEntries;
3147 int NextDirOffset;
3148
3149 #ifdef EXIF_DEBUG
3150 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process %s (x%04X(=%d))", exif_get_sectionname(section_index), IFDlength, IFDlength);
3151 #endif
3152
3153 ImageInfo->sections_found |= FOUND_IFD0;
3154
3155 if ((dir_start + 2) >= (offset_base+IFDlength)) {
3156 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size");
3157 return FALSE;
3158 }
3159
3160 NumDirEntries = php_ifd_get16u(dir_start, ImageInfo->motorola_intel);
3161
3162 if ((dir_start+2+NumDirEntries*12) > (offset_base+IFDlength)) {
3163 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);
3164 return FALSE;
3165 }
3166
3167 for (de=0;de<NumDirEntries;de++) {
3168 if (!exif_process_IFD_TAG(ImageInfo, dir_start + 2 + 12 * de,
3169 offset_base, IFDlength, displacement, section_index, 1, exif_get_tag_table(section_index))) {
3170 return FALSE;
3171 }
3172 }
3173 /*
3174 * Ignore IFD2 if it purportedly exists
3175 */
3176 if (section_index == SECTION_THUMBNAIL) {
3177 return TRUE;
3178 }
3179 /*
3180 * Hack to make it process IDF1 I hope
3181 * There are 2 IDFs, the second one holds the keys (0x0201 and 0x0202) to the thumbnail
3182 */
3183 if ((dir_start+2+12*de + 4) >= (offset_base+IFDlength)) {
3184 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size");
3185 return FALSE;
3186 }
3187 NextDirOffset = php_ifd_get32u(dir_start+2+12*de, ImageInfo->motorola_intel);
3188 if (NextDirOffset) {
3189 /* the next line seems false but here IFDlength means length of all IFDs */
3190 if (offset_base + NextDirOffset < offset_base || offset_base + NextDirOffset > offset_base+IFDlength) {
3191 exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD offset");
3192 return FALSE;
3193 }
3194 /* That is the IFD for the first thumbnail */
3195 #ifdef EXIF_DEBUG
3196 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Expect next IFD to be thumbnail");
3197 #endif
3198 if (exif_process_IFD_in_JPEG(ImageInfo, offset_base + NextDirOffset, offset_base, IFDlength, displacement, SECTION_THUMBNAIL)) {
3199 #ifdef EXIF_DEBUG
3200 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail size: 0x%04X", ImageInfo->Thumbnail.size);
3201 #endif
3202 if (ImageInfo->Thumbnail.filetype != IMAGE_FILETYPE_UNKNOWN
3203 && ImageInfo->Thumbnail.size
3204 && ImageInfo->Thumbnail.offset
3205 && ImageInfo->read_thumbnail
3206 ) {
3207 exif_thumbnail_extract(ImageInfo, offset_base, IFDlength);
3208 }
3209 return TRUE;
3210 } else {
3211 return FALSE;
3212 }
3213 }
3214 return TRUE;
3215 }
3216 /* }}} */
3217
3218 /* {{{ exif_process_TIFF_in_JPEG
3219 Process a TIFF header in a JPEG file
3220 */
exif_process_TIFF_in_JPEG(image_info_type * ImageInfo,char * CharBuf,size_t length,size_t displacement)3221 static void exif_process_TIFF_in_JPEG(image_info_type *ImageInfo, char *CharBuf, size_t length, size_t displacement)
3222 {
3223 unsigned exif_value_2a, offset_of_ifd;
3224
3225 /* set the thumbnail stuff to nothing so we can test to see if they get set up */
3226 if (memcmp(CharBuf, "II", 2) == 0) {
3227 ImageInfo->motorola_intel = 0;
3228 } else if (memcmp(CharBuf, "MM", 2) == 0) {
3229 ImageInfo->motorola_intel = 1;
3230 } else {
3231 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF alignment marker");
3232 return;
3233 }
3234
3235 /* Check the next two values for correctness. */
3236 if (length < 8) {
3237 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF start (1)");
3238 return;
3239 }
3240 exif_value_2a = php_ifd_get16u(CharBuf+2, ImageInfo->motorola_intel);
3241 offset_of_ifd = php_ifd_get32u(CharBuf+4, ImageInfo->motorola_intel);
3242 if (exif_value_2a != 0x2a || offset_of_ifd < 0x08) {
3243 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF start (1)");
3244 return;
3245 }
3246 if (offset_of_ifd > length) {
3247 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid IFD start");
3248 return;
3249 }
3250
3251 ImageInfo->sections_found |= FOUND_IFD0;
3252 /* First directory starts at offset 8. Offsets starts at 0. */
3253 exif_process_IFD_in_JPEG(ImageInfo, CharBuf+offset_of_ifd, CharBuf, length/*-14*/, displacement, SECTION_IFD0);
3254
3255 #ifdef EXIF_DEBUG
3256 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process TIFF in JPEG done");
3257 #endif
3258
3259 /* Compute the CCD width, in milimeters. */
3260 if (ImageInfo->FocalplaneXRes != 0) {
3261 ImageInfo->CCDWidth = (float)(ImageInfo->ExifImageWidth * ImageInfo->FocalplaneUnits / ImageInfo->FocalplaneXRes);
3262 }
3263 }
3264 /* }}} */
3265
3266 /* {{{ exif_process_APP1
3267 Process an JPEG APP1 block marker
3268 Describes all the drivel that most digital cameras include...
3269 */
exif_process_APP1(image_info_type * ImageInfo,char * CharBuf,size_t length,size_t displacement)3270 static void exif_process_APP1(image_info_type *ImageInfo, char *CharBuf, size_t length, size_t displacement)
3271 {
3272 /* Check the APP1 for Exif Identifier Code */
3273 static const uchar ExifHeader[] = {0x45, 0x78, 0x69, 0x66, 0x00, 0x00};
3274 if (length <= 8 || memcmp(CharBuf+2, ExifHeader, 6)) {
3275 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Incorrect APP1 Exif Identifier Code");
3276 return;
3277 }
3278 exif_process_TIFF_in_JPEG(ImageInfo, CharBuf + 8, length - 8, displacement+8);
3279 #ifdef EXIF_DEBUG
3280 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process APP1/EXIF done");
3281 #endif
3282 }
3283 /* }}} */
3284
3285 /* {{{ exif_process_APP12
3286 Process an JPEG APP12 block marker used by OLYMPUS
3287 */
exif_process_APP12(image_info_type * ImageInfo,char * buffer,size_t length)3288 static void exif_process_APP12(image_info_type *ImageInfo, char *buffer, size_t length)
3289 {
3290 size_t l1, l2=0;
3291
3292 if ((l1 = php_strnlen(buffer+2, length-2)) > 0) {
3293 exif_iif_add_tag(ImageInfo, SECTION_APP12, "Company", TAG_NONE, TAG_FMT_STRING, l1, buffer+2);
3294 if (length > 2+l1+1) {
3295 l2 = php_strnlen(buffer+2+l1+1, length-2-l1-1);
3296 exif_iif_add_tag(ImageInfo, SECTION_APP12, "Info", TAG_NONE, TAG_FMT_STRING, l2, buffer+2+l1+1);
3297 }
3298 }
3299 #ifdef EXIF_DEBUG
3300 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process section APP12 with l1=%d, l2=%d done", l1, l2);
3301 #endif
3302 }
3303 /* }}} */
3304
3305 /* {{{ exif_scan_JPEG_header
3306 * Parse the marker stream until SOS or EOI is seen; */
exif_scan_JPEG_header(image_info_type * ImageInfo)3307 static int exif_scan_JPEG_header(image_info_type *ImageInfo)
3308 {
3309 int section, sn;
3310 int marker = 0, last_marker = M_PSEUDO, comment_correction=1;
3311 unsigned int ll, lh;
3312 uchar *Data;
3313 size_t fpos, size, got, itemlen;
3314 jpeg_sof_info sof_info;
3315
3316 for(section=0;;section++) {
3317 #ifdef EXIF_DEBUG
3318 fpos = php_stream_tell(ImageInfo->infile);
3319 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Needing section %d @ 0x%08X", ImageInfo->file.count, fpos);
3320 #endif
3321
3322 /* get marker byte, swallowing possible padding */
3323 /* some software does not count the length bytes of COM section */
3324 /* one company doing so is very much envolved in JPEG... so we accept too */
3325 if (last_marker==M_COM && comment_correction) {
3326 comment_correction = 2;
3327 }
3328 do {
3329 if ((marker = php_stream_getc(ImageInfo->infile)) == EOF) {
3330 EXIF_ERRLOG_CORRUPT(ImageInfo)
3331 return FALSE;
3332 }
3333 if (last_marker==M_COM && comment_correction>0) {
3334 if (marker!=0xFF) {
3335 marker = 0xff;
3336 comment_correction--;
3337 } else {
3338 last_marker = M_PSEUDO; /* stop skipping 0 for M_COM */
3339 }
3340 }
3341 } while (marker == 0xff);
3342 if (last_marker==M_COM && !comment_correction) {
3343 exif_error_docref("exif_read_data#error_mcom" EXIFERR_CC, ImageInfo, E_NOTICE, "Image has corrupt COM section: some software set wrong length information");
3344 }
3345 if (last_marker==M_COM && comment_correction)
3346 return M_EOI; /* ah illegal: char after COM section not 0xFF */
3347
3348 fpos = php_stream_tell(ImageInfo->infile);
3349
3350 if (marker == 0xff) {
3351 /* 0xff is legal padding, but if we get that many, something's wrong. */
3352 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "To many padding bytes");
3353 return FALSE;
3354 }
3355
3356 /* Read the length of the section. */
3357 if ((lh = php_stream_getc(ImageInfo->infile)) == EOF) {
3358 EXIF_ERRLOG_CORRUPT(ImageInfo)
3359 return FALSE;
3360 }
3361 if ((ll = php_stream_getc(ImageInfo->infile)) == EOF) {
3362 EXIF_ERRLOG_CORRUPT(ImageInfo)
3363 return FALSE;
3364 }
3365
3366 itemlen = (lh << 8) | ll;
3367
3368 if (itemlen < 2) {
3369 #ifdef EXIF_DEBUG
3370 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s, Section length: 0x%02X%02X", EXIF_ERROR_CORRUPT, lh, ll);
3371 #else
3372 EXIF_ERRLOG_CORRUPT(ImageInfo)
3373 #endif
3374 return FALSE;
3375 }
3376
3377 sn = exif_file_sections_add(ImageInfo, marker, itemlen+1, NULL);
3378 Data = ImageInfo->file.list[sn].data;
3379
3380 /* Store first two pre-read bytes. */
3381 Data[0] = (uchar)lh;
3382 Data[1] = (uchar)ll;
3383
3384 got = php_stream_read(ImageInfo->infile, (char*)(Data+2), itemlen-2); /* Read the whole section. */
3385 if (got != itemlen-2) {
3386 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);
3387 return FALSE;
3388 }
3389
3390 #ifdef EXIF_DEBUG
3391 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);
3392 #endif
3393 switch(marker) {
3394 case M_SOS: /* stop before hitting compressed data */
3395 /* If reading entire image is requested, read the rest of the data. */
3396 if (ImageInfo->read_all) {
3397 /* Determine how much file is left. */
3398 fpos = php_stream_tell(ImageInfo->infile);
3399 size = ImageInfo->FileSize - fpos;
3400 sn = exif_file_sections_add(ImageInfo, M_PSEUDO, size, NULL);
3401 Data = ImageInfo->file.list[sn].data;
3402 got = php_stream_read(ImageInfo->infile, (char*)Data, size);
3403 if (got != size) {
3404 EXIF_ERRLOG_FILEEOF(ImageInfo)
3405 return FALSE;
3406 }
3407 }
3408 return TRUE;
3409
3410 case M_EOI: /* in case it's a tables-only JPEG stream */
3411 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "No image in jpeg!");
3412 return (ImageInfo->sections_found&(~FOUND_COMPUTED)) ? TRUE : FALSE;
3413
3414 case M_COM: /* Comment section */
3415 exif_process_COM(ImageInfo, (char *)Data, itemlen);
3416 break;
3417
3418 case M_EXIF:
3419 if (!(ImageInfo->sections_found&FOUND_IFD0)) {
3420 /*ImageInfo->sections_found |= FOUND_EXIF;*/
3421 /* Seen files from some 'U-lead' software with Vivitar scanner
3422 that uses marker 31 later in the file (no clue what for!) */
3423 exif_process_APP1(ImageInfo, (char *)Data, itemlen, fpos);
3424 }
3425 break;
3426
3427 case M_APP12:
3428 exif_process_APP12(ImageInfo, (char *)Data, itemlen);
3429 break;
3430
3431
3432 case M_SOF0:
3433 case M_SOF1:
3434 case M_SOF2:
3435 case M_SOF3:
3436 case M_SOF5:
3437 case M_SOF6:
3438 case M_SOF7:
3439 case M_SOF9:
3440 case M_SOF10:
3441 case M_SOF11:
3442 case M_SOF13:
3443 case M_SOF14:
3444 case M_SOF15:
3445 if ((itemlen - 2) < 6) {
3446 return FALSE;
3447 }
3448
3449 exif_process_SOFn(Data, marker, &sof_info);
3450 ImageInfo->Width = sof_info.width;
3451 ImageInfo->Height = sof_info.height;
3452 if (sof_info.num_components == 3) {
3453 ImageInfo->IsColor = 1;
3454 } else {
3455 ImageInfo->IsColor = 0;
3456 }
3457 break;
3458 default:
3459 /* skip any other marker silently. */
3460 break;
3461 }
3462
3463 /* keep track of last marker */
3464 last_marker = marker;
3465 }
3466 #ifdef EXIF_DEBUG
3467 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Done");
3468 #endif
3469 return TRUE;
3470 }
3471 /* }}} */
3472
3473 /* {{{ exif_scan_thumbnail
3474 * scan JPEG in thumbnail (memory) */
exif_scan_thumbnail(image_info_type * ImageInfo)3475 static int exif_scan_thumbnail(image_info_type *ImageInfo)
3476 {
3477 uchar c, *data = (uchar*)ImageInfo->Thumbnail.data;
3478 int n, marker;
3479 size_t length=2, pos=0;
3480 jpeg_sof_info sof_info;
3481
3482 if (!data) {
3483 return FALSE; /* nothing to do here */
3484 }
3485 if (memcmp(data, "\xFF\xD8\xFF", 3)) {
3486 if (!ImageInfo->Thumbnail.width && !ImageInfo->Thumbnail.height) {
3487 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Thumbnail is not a JPEG image");
3488 }
3489 return FALSE;
3490 }
3491 for (;;) {
3492 pos += length;
3493 if (pos>=ImageInfo->Thumbnail.size)
3494 return FALSE;
3495 c = data[pos++];
3496 if (pos>=ImageInfo->Thumbnail.size)
3497 return FALSE;
3498 if (c != 0xFF) {
3499 return FALSE;
3500 }
3501 n = 8;
3502 while ((c = data[pos++]) == 0xFF && n--) {
3503 if (pos+3>=ImageInfo->Thumbnail.size)
3504 return FALSE;
3505 /* +3 = pos++ of next check when reaching marker + 2 bytes for length */
3506 }
3507 if (c == 0xFF)
3508 return FALSE;
3509 marker = c;
3510 length = php_jpg_get16(data+pos);
3511 if (pos+length>=ImageInfo->Thumbnail.size) {
3512 return FALSE;
3513 }
3514 #ifdef EXIF_DEBUG
3515 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);
3516 #endif
3517 switch (marker) {
3518 case M_SOF0:
3519 case M_SOF1:
3520 case M_SOF2:
3521 case M_SOF3:
3522 case M_SOF5:
3523 case M_SOF6:
3524 case M_SOF7:
3525 case M_SOF9:
3526 case M_SOF10:
3527 case M_SOF11:
3528 case M_SOF13:
3529 case M_SOF14:
3530 case M_SOF15:
3531 /* handle SOFn block */
3532 exif_process_SOFn(data+pos, marker, &sof_info);
3533 ImageInfo->Thumbnail.height = sof_info.height;
3534 ImageInfo->Thumbnail.width = sof_info.width;
3535 #ifdef EXIF_DEBUG
3536 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: size: %d * %d", sof_info.width, sof_info.height);
3537 #endif
3538 return TRUE;
3539
3540 case M_SOS:
3541 case M_EOI:
3542 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Could not compute size of thumbnail");
3543 return FALSE;
3544 break;
3545
3546 default:
3547 /* just skip */
3548 break;
3549 }
3550 }
3551
3552 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Could not compute size of thumbnail");
3553 return FALSE;
3554 }
3555 /* }}} */
3556
3557 /* {{{ exif_process_IFD_in_TIFF
3558 * Parse the TIFF header; */
exif_process_IFD_in_TIFF(image_info_type * ImageInfo,size_t dir_offset,int section_index)3559 static int exif_process_IFD_in_TIFF(image_info_type *ImageInfo, size_t dir_offset, int section_index)
3560 {
3561 int i, sn, num_entries, sub_section_index = 0;
3562 unsigned char *dir_entry;
3563 char tagname[64];
3564 size_t ifd_size, dir_size, entry_offset, next_offset, entry_length, entry_value=0, fgot;
3565 int entry_tag , entry_type;
3566 tag_table_type tag_table = exif_get_tag_table(section_index);
3567
3568 if (ImageInfo->ifd_nesting_level > MAX_IFD_NESTING_LEVEL) {
3569 return FALSE;
3570 }
3571
3572 if (ImageInfo->FileSize >= dir_offset+2) {
3573 sn = exif_file_sections_add(ImageInfo, M_PSEUDO, 2, NULL);
3574 #ifdef EXIF_DEBUG
3575 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);
3576 #endif
3577 php_stream_seek(ImageInfo->infile, dir_offset, SEEK_SET); /* we do not know the order of sections */
3578 php_stream_read(ImageInfo->infile, (char*)ImageInfo->file.list[sn].data, 2);
3579 num_entries = php_ifd_get16u(ImageInfo->file.list[sn].data, ImageInfo->motorola_intel);
3580 dir_size = 2/*num dir entries*/ +12/*length of entry*/*num_entries +4/* offset to next ifd (points to thumbnail or NULL)*/;
3581 if (ImageInfo->FileSize >= dir_offset+dir_size) {
3582 #ifdef EXIF_DEBUG
3583 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);
3584 #endif
3585 if (exif_file_sections_realloc(ImageInfo, sn, dir_size)) {
3586 return FALSE;
3587 }
3588 php_stream_read(ImageInfo->infile, (char*)(ImageInfo->file.list[sn].data+2), dir_size-2);
3589 /*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Dump: %s", exif_char_dump(ImageInfo->file.list[sn].data, dir_size, 0));*/
3590 next_offset = php_ifd_get32u(ImageInfo->file.list[sn].data + dir_size - 4, ImageInfo->motorola_intel);
3591 #ifdef EXIF_DEBUG
3592 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF done, next offset x%04X", next_offset);
3593 #endif
3594 /* now we have the directory we can look how long it should be */
3595 ifd_size = dir_size;
3596 for(i=0;i<num_entries;i++) {
3597 dir_entry = ImageInfo->file.list[sn].data+2+i*12;
3598 entry_tag = php_ifd_get16u(dir_entry+0, ImageInfo->motorola_intel);
3599 entry_type = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
3600 if (entry_type > NUM_FORMATS) {
3601 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF: tag(0x%04X,%12s): Illegal format code 0x%04X, switching to BYTE", entry_tag, exif_get_tagname(entry_tag, tagname, -12, tag_table), entry_type);
3602 /* Since this is repeated in exif_process_IFD_TAG make it a notice here */
3603 /* and make it a warning in the exif_process_IFD_TAG which is called */
3604 /* elsewhere. */
3605 entry_type = TAG_FMT_BYTE;
3606 /*The next line would break the image on writeback: */
3607 /* php_ifd_set16u(dir_entry+2, entry_type, ImageInfo->motorola_intel);*/
3608 }
3609 entry_length = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel) * php_tiff_bytes_per_format[entry_type];
3610 if (entry_length <= 4) {
3611 switch(entry_type) {
3612 case TAG_FMT_USHORT:
3613 entry_value = php_ifd_get16u(dir_entry+8, ImageInfo->motorola_intel);
3614 break;
3615 case TAG_FMT_SSHORT:
3616 entry_value = php_ifd_get16s(dir_entry+8, ImageInfo->motorola_intel);
3617 break;
3618 case TAG_FMT_ULONG:
3619 entry_value = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
3620 break;
3621 case TAG_FMT_SLONG:
3622 entry_value = php_ifd_get32s(dir_entry+8, ImageInfo->motorola_intel);
3623 break;
3624 }
3625 switch(entry_tag) {
3626 case TAG_IMAGEWIDTH:
3627 case TAG_COMP_IMAGE_WIDTH:
3628 ImageInfo->Width = entry_value;
3629 break;
3630 case TAG_IMAGEHEIGHT:
3631 case TAG_COMP_IMAGE_HEIGHT:
3632 ImageInfo->Height = entry_value;
3633 break;
3634 case TAG_PHOTOMETRIC_INTERPRETATION:
3635 switch (entry_value) {
3636 case PMI_BLACK_IS_ZERO:
3637 case PMI_WHITE_IS_ZERO:
3638 case PMI_TRANSPARENCY_MASK:
3639 ImageInfo->IsColor = 0;
3640 break;
3641 case PMI_RGB:
3642 case PMI_PALETTE_COLOR:
3643 case PMI_SEPARATED:
3644 case PMI_YCBCR:
3645 case PMI_CIELAB:
3646 ImageInfo->IsColor = 1;
3647 break;
3648 }
3649 break;
3650 }
3651 } else {
3652 entry_offset = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
3653 /* if entry needs expading ifd cache and entry is at end of current ifd cache. */
3654 /* otherwise there may be huge holes between two entries */
3655 if (entry_offset + entry_length > dir_offset + ifd_size
3656 && entry_offset == dir_offset + ifd_size) {
3657 ifd_size = entry_offset + entry_length - dir_offset;
3658 #ifdef EXIF_DEBUG
3659 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);
3660 #endif
3661 }
3662 }
3663 }
3664 if (ImageInfo->FileSize >= dir_offset + ImageInfo->file.list[sn].size) {
3665 if (ifd_size > dir_size) {
3666 if (dir_offset + ifd_size > ImageInfo->FileSize) {
3667 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);
3668 return FALSE;
3669 }
3670 if (exif_file_sections_realloc(ImageInfo, sn, ifd_size)) {
3671 return FALSE;
3672 }
3673 /* read values not stored in directory itself */
3674 #ifdef EXIF_DEBUG
3675 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);
3676 #endif
3677 php_stream_read(ImageInfo->infile, (char*)(ImageInfo->file.list[sn].data+dir_size), ifd_size-dir_size);
3678 #ifdef EXIF_DEBUG
3679 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF, done");
3680 #endif
3681 }
3682 /* now process the tags */
3683 for(i=0;i<num_entries;i++) {
3684 dir_entry = ImageInfo->file.list[sn].data+2+i*12;
3685 entry_tag = php_ifd_get16u(dir_entry+0, ImageInfo->motorola_intel);
3686 entry_type = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
3687 /*entry_length = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel);*/
3688 if (entry_tag == TAG_EXIF_IFD_POINTER ||
3689 entry_tag == TAG_INTEROP_IFD_POINTER ||
3690 entry_tag == TAG_GPS_IFD_POINTER ||
3691 entry_tag == TAG_SUB_IFD
3692 ) {
3693 switch(entry_tag) {
3694 case TAG_EXIF_IFD_POINTER:
3695 ImageInfo->sections_found |= FOUND_EXIF;
3696 sub_section_index = SECTION_EXIF;
3697 break;
3698 case TAG_GPS_IFD_POINTER:
3699 ImageInfo->sections_found |= FOUND_GPS;
3700 sub_section_index = SECTION_GPS;
3701 break;
3702 case TAG_INTEROP_IFD_POINTER:
3703 ImageInfo->sections_found |= FOUND_INTEROP;
3704 sub_section_index = SECTION_INTEROP;
3705 break;
3706 case TAG_SUB_IFD:
3707 ImageInfo->sections_found |= FOUND_THUMBNAIL;
3708 sub_section_index = SECTION_THUMBNAIL;
3709 break;
3710 }
3711 entry_offset = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
3712 #ifdef EXIF_DEBUG
3713 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Next IFD: %s @x%04X", exif_get_sectionname(sub_section_index), entry_offset);
3714 #endif
3715 ImageInfo->ifd_nesting_level++;
3716 exif_process_IFD_in_TIFF(ImageInfo, entry_offset, sub_section_index);
3717 if (section_index!=SECTION_THUMBNAIL && entry_tag==TAG_SUB_IFD) {
3718 if (ImageInfo->Thumbnail.filetype != IMAGE_FILETYPE_UNKNOWN
3719 && ImageInfo->Thumbnail.size
3720 && ImageInfo->Thumbnail.offset
3721 && ImageInfo->read_thumbnail
3722 ) {
3723 #ifdef EXIF_DEBUG
3724 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);
3725 #endif
3726 if (!ImageInfo->Thumbnail.data) {
3727 ImageInfo->Thumbnail.data = safe_emalloc(ImageInfo->Thumbnail.size, 1, 0);
3728 php_stream_seek(ImageInfo->infile, ImageInfo->Thumbnail.offset, SEEK_SET);
3729 fgot = php_stream_read(ImageInfo->infile, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
3730 if (fgot < ImageInfo->Thumbnail.size) {
3731 EXIF_ERRLOG_THUMBEOF(ImageInfo)
3732 efree(ImageInfo->Thumbnail.data);
3733 ImageInfo->Thumbnail.data = NULL;
3734 } else {
3735 exif_thumbnail_build(ImageInfo);
3736 }
3737 }
3738 }
3739 }
3740 #ifdef EXIF_DEBUG
3741 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Next IFD: %s done", exif_get_sectionname(sub_section_index));
3742 #endif
3743 } else {
3744 if (!exif_process_IFD_TAG(ImageInfo, (char*)dir_entry,
3745 (char*)(ImageInfo->file.list[sn].data-dir_offset),
3746 ifd_size, 0, section_index, 0, tag_table)) {
3747 return FALSE;
3748 }
3749 }
3750 }
3751 /* If we had a thumbnail in a SUB_IFD we have ANOTHER image in NEXT IFD */
3752 if (next_offset && section_index != SECTION_THUMBNAIL) {
3753 /* this should be a thumbnail IFD */
3754 /* the thumbnail itself is stored at Tag=StripOffsets */
3755 #ifdef EXIF_DEBUG
3756 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read next IFD (THUMBNAIL) at x%04X", next_offset);
3757 #endif
3758 ImageInfo->ifd_nesting_level++;
3759 exif_process_IFD_in_TIFF(ImageInfo, next_offset, SECTION_THUMBNAIL);
3760 #ifdef EXIF_DEBUG
3761 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);
3762 #endif
3763 if (!ImageInfo->Thumbnail.data && ImageInfo->Thumbnail.offset && ImageInfo->Thumbnail.size && ImageInfo->read_thumbnail) {
3764 ImageInfo->Thumbnail.data = safe_emalloc(ImageInfo->Thumbnail.size, 1, 0);
3765 php_stream_seek(ImageInfo->infile, ImageInfo->Thumbnail.offset, SEEK_SET);
3766 fgot = php_stream_read(ImageInfo->infile, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
3767 if (fgot < ImageInfo->Thumbnail.size) {
3768 EXIF_ERRLOG_THUMBEOF(ImageInfo)
3769 efree(ImageInfo->Thumbnail.data);
3770 ImageInfo->Thumbnail.data = NULL;
3771 } else {
3772 exif_thumbnail_build(ImageInfo);
3773 }
3774 }
3775 #ifdef EXIF_DEBUG
3776 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read next IFD (THUMBNAIL) done");
3777 #endif
3778 }
3779 return TRUE;
3780 } else {
3781 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);
3782 return FALSE;
3783 }
3784 } else {
3785 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);
3786 return FALSE;
3787 }
3788 } else {
3789 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);
3790 return FALSE;
3791 }
3792 }
3793 /* }}} */
3794
3795 /* {{{ exif_scan_FILE_header
3796 * Parse the marker stream until SOS or EOI is seen; */
exif_scan_FILE_header(image_info_type * ImageInfo)3797 static int exif_scan_FILE_header(image_info_type *ImageInfo)
3798 {
3799 unsigned char file_header[8];
3800 int ret = FALSE;
3801
3802 ImageInfo->FileType = IMAGE_FILETYPE_UNKNOWN;
3803
3804 if (ImageInfo->FileSize >= 2) {
3805 php_stream_seek(ImageInfo->infile, 0, SEEK_SET);
3806 if (php_stream_read(ImageInfo->infile, (char*)file_header, 2) != 2) {
3807 return FALSE;
3808 }
3809 if ((file_header[0]==0xff) && (file_header[1]==M_SOI)) {
3810 ImageInfo->FileType = IMAGE_FILETYPE_JPEG;
3811 if (exif_scan_JPEG_header(ImageInfo)) {
3812 ret = TRUE;
3813 } else {
3814 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid JPEG file");
3815 }
3816 } else if (ImageInfo->FileSize >= 8) {
3817 if (php_stream_read(ImageInfo->infile, (char*)(file_header+2), 6) != 6) {
3818 return FALSE;
3819 }
3820 if (!memcmp(file_header, "II\x2A\x00", 4)) {
3821 ImageInfo->FileType = IMAGE_FILETYPE_TIFF_II;
3822 ImageInfo->motorola_intel = 0;
3823 #ifdef EXIF_DEBUG
3824 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "File has TIFF/II format");
3825 #endif
3826 ImageInfo->sections_found |= FOUND_IFD0;
3827 if (exif_process_IFD_in_TIFF(ImageInfo,
3828 php_ifd_get32u(file_header + 4, ImageInfo->motorola_intel),
3829 SECTION_IFD0)) {
3830 ret = TRUE;
3831 } else {
3832 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF file");
3833 }
3834 } else if (!memcmp(file_header, "MM\x00\x2a", 4)) {
3835 ImageInfo->FileType = IMAGE_FILETYPE_TIFF_MM;
3836 ImageInfo->motorola_intel = 1;
3837 #ifdef EXIF_DEBUG
3838 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "File has TIFF/MM format");
3839 #endif
3840 ImageInfo->sections_found |= FOUND_IFD0;
3841 if (exif_process_IFD_in_TIFF(ImageInfo,
3842 php_ifd_get32u(file_header + 4, ImageInfo->motorola_intel),
3843 SECTION_IFD0)) {
3844 ret = TRUE;
3845 } else {
3846 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF file");
3847 }
3848 } else {
3849 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "File not supported");
3850 return FALSE;
3851 }
3852 }
3853 } else {
3854 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "File too small (%d)", ImageInfo->FileSize);
3855 }
3856 return ret;
3857 }
3858 /* }}} */
3859
3860 /* {{{ exif_discard_imageinfo
3861 Discard data scanned by exif_read_file.
3862 */
exif_discard_imageinfo(image_info_type * ImageInfo)3863 static int exif_discard_imageinfo(image_info_type *ImageInfo)
3864 {
3865 int i;
3866
3867 EFREE_IF(ImageInfo->FileName);
3868 EFREE_IF(ImageInfo->UserComment);
3869 EFREE_IF(ImageInfo->UserCommentEncoding);
3870 EFREE_IF(ImageInfo->Copyright);
3871 EFREE_IF(ImageInfo->CopyrightPhotographer);
3872 EFREE_IF(ImageInfo->CopyrightEditor);
3873 EFREE_IF(ImageInfo->Thumbnail.data);
3874 EFREE_IF(ImageInfo->encode_unicode);
3875 EFREE_IF(ImageInfo->decode_unicode_be);
3876 EFREE_IF(ImageInfo->decode_unicode_le);
3877 EFREE_IF(ImageInfo->encode_jis);
3878 EFREE_IF(ImageInfo->decode_jis_be);
3879 EFREE_IF(ImageInfo->decode_jis_le);
3880 EFREE_IF(ImageInfo->make);
3881 EFREE_IF(ImageInfo->model);
3882 for (i=0; i<ImageInfo->xp_fields.count; i++) {
3883 EFREE_IF(ImageInfo->xp_fields.list[i].value);
3884 }
3885 EFREE_IF(ImageInfo->xp_fields.list);
3886 for (i=0; i<SECTION_COUNT; i++) {
3887 exif_iif_free(ImageInfo, i);
3888 }
3889 exif_file_sections_free(ImageInfo);
3890 memset(ImageInfo, 0, sizeof(*ImageInfo));
3891 return TRUE;
3892 }
3893 /* }}} */
3894
3895 /* {{{ exif_read_file
3896 */
exif_read_file(image_info_type * ImageInfo,char * FileName,int read_thumbnail,int read_all)3897 static int exif_read_file(image_info_type *ImageInfo, char *FileName, int read_thumbnail, int read_all)
3898 {
3899 int ret;
3900 zend_stat_t st;
3901 zend_string *base;
3902
3903 /* Start with an empty image information structure. */
3904 memset(ImageInfo, 0, sizeof(*ImageInfo));
3905
3906 ImageInfo->motorola_intel = -1; /* flag as unknown */
3907
3908 ImageInfo->infile = php_stream_open_wrapper(FileName, "rb", STREAM_MUST_SEEK|IGNORE_PATH, NULL);
3909 if (!ImageInfo->infile) {
3910 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Unable to open file");
3911 return FALSE;
3912 }
3913
3914 if (php_stream_is(ImageInfo->infile, PHP_STREAM_IS_STDIO)) {
3915 if (VCWD_STAT(FileName, &st) >= 0) {
3916 if ((st.st_mode & S_IFMT) != S_IFREG) {
3917 exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Not a file");
3918 php_stream_close(ImageInfo->infile);
3919 return FALSE;
3920 }
3921
3922 /* Store file date/time. */
3923 ImageInfo->FileDateTime = st.st_mtime;
3924 ImageInfo->FileSize = st.st_size;
3925 /*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Opened stream is file: %d", ImageInfo->FileSize);*/
3926 }
3927 } else {
3928 if (!ImageInfo->FileSize) {
3929 php_stream_seek(ImageInfo->infile, 0, SEEK_END);
3930 ImageInfo->FileSize = php_stream_tell(ImageInfo->infile);
3931 php_stream_seek(ImageInfo->infile, 0, SEEK_SET);
3932 }
3933 }
3934
3935 base = php_basename(FileName, strlen(FileName), NULL, 0);
3936 ImageInfo->FileName = estrndup(ZSTR_VAL(base), ZSTR_LEN(base));
3937 zend_string_release(base);
3938 ImageInfo->read_thumbnail = read_thumbnail;
3939 ImageInfo->read_all = read_all;
3940 ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_UNKNOWN;
3941
3942 ImageInfo->encode_unicode = estrdup(EXIF_G(encode_unicode));
3943 ImageInfo->decode_unicode_be = estrdup(EXIF_G(decode_unicode_be));
3944 ImageInfo->decode_unicode_le = estrdup(EXIF_G(decode_unicode_le));
3945 ImageInfo->encode_jis = estrdup(EXIF_G(encode_jis));
3946 ImageInfo->decode_jis_be = estrdup(EXIF_G(decode_jis_be));
3947 ImageInfo->decode_jis_le = estrdup(EXIF_G(decode_jis_le));
3948
3949
3950 ImageInfo->ifd_nesting_level = 0;
3951
3952 /* Scan the JPEG headers. */
3953 ret = exif_scan_FILE_header(ImageInfo);
3954
3955 php_stream_close(ImageInfo->infile);
3956 return ret;
3957 }
3958 /* }}} */
3959
3960 /* {{{ proto array exif_read_data(string filename [, string sections_needed [, bool sub_arrays[, bool read_thumbnail]]])
3961 Reads header data from the JPEG/TIFF image filename and optionally reads the internal thumbnails */
PHP_FUNCTION(exif_read_data)3962 PHP_FUNCTION(exif_read_data)
3963 {
3964 char *p_name, *p_sections_needed = NULL;
3965 size_t p_name_len, p_sections_needed_len = 0;
3966 zend_bool sub_arrays=0, read_thumbnail=0, read_all=0;
3967
3968 int i, ret, sections_needed=0;
3969 image_info_type ImageInfo;
3970 char tmp[64], *sections_str, *s;
3971
3972 if (zend_parse_parameters(ZEND_NUM_ARGS(), "p|sbb", &p_name, &p_name_len, &p_sections_needed, &p_sections_needed_len, &sub_arrays, &read_thumbnail) == FAILURE) {
3973 return;
3974 }
3975
3976 memset(&ImageInfo, 0, sizeof(ImageInfo));
3977
3978 if (p_sections_needed) {
3979 spprintf(§ions_str, 0, ",%s,", p_sections_needed);
3980 /* sections_str DOES start with , and SPACES are NOT allowed in names */
3981 s = sections_str;
3982 while (*++s) {
3983 if (*s == ' ') {
3984 *s = ',';
3985 }
3986 }
3987
3988 for (i = 0; i < SECTION_COUNT; i++) {
3989 snprintf(tmp, sizeof(tmp), ",%s,", exif_get_sectionname(i));
3990 if (strstr(sections_str, tmp)) {
3991 sections_needed |= 1<<i;
3992 }
3993 }
3994 EFREE_IF(sections_str);
3995 /* now see what we need */
3996 #ifdef EXIF_DEBUG
3997 sections_str = exif_get_sectionlist(sections_needed);
3998 if (!sections_str) {
3999 RETURN_FALSE;
4000 }
4001 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Sections needed: %s", sections_str[0] ? sections_str : "None");
4002 EFREE_IF(sections_str);
4003 #endif
4004 }
4005
4006 ret = exif_read_file(&ImageInfo, p_name, read_thumbnail, read_all);
4007 sections_str = exif_get_sectionlist(ImageInfo.sections_found);
4008
4009 #ifdef EXIF_DEBUG
4010 if (sections_str)
4011 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Sections found: %s", sections_str[0] ? sections_str : "None");
4012 #endif
4013
4014 ImageInfo.sections_found |= FOUND_COMPUTED|FOUND_FILE;/* do not inform about in debug*/
4015
4016 if (ret == FALSE || (sections_needed && !(sections_needed&ImageInfo.sections_found))) {
4017 /* array_init must be checked at last! otherwise the array must be freed if a later test fails. */
4018 exif_discard_imageinfo(&ImageInfo);
4019 EFREE_IF(sections_str);
4020 RETURN_FALSE;
4021 }
4022
4023 array_init(return_value);
4024
4025 #ifdef EXIF_DEBUG
4026 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Generate section FILE");
4027 #endif
4028
4029 /* now we can add our information */
4030 exif_iif_add_str(&ImageInfo, SECTION_FILE, "FileName", ImageInfo.FileName);
4031 exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileDateTime", ImageInfo.FileDateTime);
4032 exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileSize", ImageInfo.FileSize);
4033 exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileType", ImageInfo.FileType);
4034 exif_iif_add_str(&ImageInfo, SECTION_FILE, "MimeType", (char*)php_image_type_to_mime_type(ImageInfo.FileType));
4035 exif_iif_add_str(&ImageInfo, SECTION_FILE, "SectionsFound", sections_str ? sections_str : "NONE");
4036
4037 #ifdef EXIF_DEBUG
4038 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Generate section COMPUTED");
4039 #endif
4040
4041 if (ImageInfo.Width>0 && ImageInfo.Height>0) {
4042 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "html" , "width=\"%d\" height=\"%d\"", ImageInfo.Width, ImageInfo.Height);
4043 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Height", ImageInfo.Height);
4044 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Width", ImageInfo.Width);
4045 }
4046 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "IsColor", ImageInfo.IsColor);
4047 if (ImageInfo.motorola_intel != -1) {
4048 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "ByteOrderMotorola", ImageInfo.motorola_intel);
4049 }
4050 if (ImageInfo.FocalLength) {
4051 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "FocalLength", "%4.1Fmm", ImageInfo.FocalLength);
4052 if(ImageInfo.CCDWidth) {
4053 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "35mmFocalLength", "%dmm", (int)(ImageInfo.FocalLength/ImageInfo.CCDWidth*35+0.5));
4054 }
4055 }
4056 if(ImageInfo.CCDWidth) {
4057 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "CCDWidth", "%dmm", (int)ImageInfo.CCDWidth);
4058 }
4059 if(ImageInfo.ExposureTime>0) {
4060 if(ImageInfo.ExposureTime <= 0.5) {
4061 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ExposureTime", "%0.3F s (1/%d)", ImageInfo.ExposureTime, (int)(0.5 + 1/ImageInfo.ExposureTime));
4062 } else {
4063 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ExposureTime", "%0.3F s", ImageInfo.ExposureTime);
4064 }
4065 }
4066 if(ImageInfo.ApertureFNumber) {
4067 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ApertureFNumber", "f/%.1F", ImageInfo.ApertureFNumber);
4068 }
4069 if(ImageInfo.Distance) {
4070 if(ImageInfo.Distance<0) {
4071 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "FocusDistance", "Infinite");
4072 } else {
4073 exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "FocusDistance", "%0.2Fm", ImageInfo.Distance);
4074 }
4075 }
4076 if (ImageInfo.UserComment) {
4077 exif_iif_add_buffer(&ImageInfo, SECTION_COMPUTED, "UserComment", ImageInfo.UserCommentLength, ImageInfo.UserComment);
4078 if (ImageInfo.UserCommentEncoding && strlen(ImageInfo.UserCommentEncoding)) {
4079 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "UserCommentEncoding", ImageInfo.UserCommentEncoding);
4080 }
4081 }
4082
4083 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright", ImageInfo.Copyright);
4084 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright.Photographer", ImageInfo.CopyrightPhotographer);
4085 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright.Editor", ImageInfo.CopyrightEditor);
4086
4087 for (i=0; i<ImageInfo.xp_fields.count; i++) {
4088 exif_iif_add_str(&ImageInfo, SECTION_WINXP, exif_get_tagname(ImageInfo.xp_fields.list[i].tag, NULL, 0, exif_get_tag_table(SECTION_WINXP)), ImageInfo.xp_fields.list[i].value);
4089 }
4090 if (ImageInfo.Thumbnail.size) {
4091 if (read_thumbnail) {
4092 /* not exif_iif_add_str : this is a buffer */
4093 exif_iif_add_tag(&ImageInfo, SECTION_THUMBNAIL, "THUMBNAIL", TAG_NONE, TAG_FMT_UNDEFINED, ImageInfo.Thumbnail.size, ImageInfo.Thumbnail.data);
4094 }
4095 if (!ImageInfo.Thumbnail.width || !ImageInfo.Thumbnail.height) {
4096 /* try to evaluate if thumbnail data is present */
4097 exif_scan_thumbnail(&ImageInfo);
4098 }
4099 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.FileType", ImageInfo.Thumbnail.filetype);
4100 exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Thumbnail.MimeType", (char*)php_image_type_to_mime_type(ImageInfo.Thumbnail.filetype));
4101 }
4102 if (ImageInfo.Thumbnail.width && ImageInfo.Thumbnail.height) {
4103 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.Height", ImageInfo.Thumbnail.height);
4104 exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.Width", ImageInfo.Thumbnail.width);
4105 }
4106 EFREE_IF(sections_str);
4107
4108 #ifdef EXIF_DEBUG
4109 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Adding image infos");
4110 #endif
4111
4112 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_FILE );
4113 add_assoc_image_info(return_value, 1, &ImageInfo, SECTION_COMPUTED );
4114 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_ANY_TAG );
4115 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_IFD0 );
4116 add_assoc_image_info(return_value, 1, &ImageInfo, SECTION_THUMBNAIL );
4117 add_assoc_image_info(return_value, 1, &ImageInfo, SECTION_COMMENT );
4118 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_EXIF );
4119 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_GPS );
4120 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_INTEROP );
4121 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_FPIX );
4122 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_APP12 );
4123 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_WINXP );
4124 add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_MAKERNOTE );
4125
4126 #ifdef EXIF_DEBUG
4127 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Discarding info");
4128 #endif
4129
4130 exif_discard_imageinfo(&ImageInfo);
4131
4132 #ifdef EXIF_DEBUG
4133 php_error_docref1(NULL, p_name, E_NOTICE, "done");
4134 #endif
4135 }
4136 /* }}} */
4137
4138 /* {{{ proto string exif_thumbnail(string filename [, &width, &height [, &imagetype]])
4139 Reads the embedded thumbnail */
PHP_FUNCTION(exif_thumbnail)4140 PHP_FUNCTION(exif_thumbnail)
4141 {
4142 zval *p_width = 0, *p_height = 0, *p_imagetype = 0;
4143 char *p_name;
4144 size_t p_name_len;
4145 int ret, arg_c = ZEND_NUM_ARGS();
4146 image_info_type ImageInfo;
4147
4148 memset(&ImageInfo, 0, sizeof(ImageInfo));
4149
4150 if (arg_c!=1 && arg_c!=3 && arg_c!=4) {
4151 WRONG_PARAM_COUNT;
4152 }
4153
4154 if (zend_parse_parameters(arg_c, "p|z/z/z/", &p_name, &p_name_len, &p_width, &p_height, &p_imagetype) == FAILURE) {
4155 return;
4156 }
4157
4158 ret = exif_read_file(&ImageInfo, p_name, 1, 0);
4159 if (ret==FALSE) {
4160 exif_discard_imageinfo(&ImageInfo);
4161 RETURN_FALSE;
4162 }
4163
4164 #ifdef EXIF_DEBUG
4165 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);
4166 #endif
4167 if (!ImageInfo.Thumbnail.data || !ImageInfo.Thumbnail.size) {
4168 exif_discard_imageinfo(&ImageInfo);
4169 RETURN_FALSE;
4170 }
4171
4172 #ifdef EXIF_DEBUG
4173 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Returning thumbnail(%d)", ImageInfo.Thumbnail.size);
4174 #endif
4175
4176 ZVAL_STRINGL(return_value, ImageInfo.Thumbnail.data, ImageInfo.Thumbnail.size);
4177 if (arg_c >= 3) {
4178 if (!ImageInfo.Thumbnail.width || !ImageInfo.Thumbnail.height) {
4179 exif_scan_thumbnail(&ImageInfo);
4180 }
4181 zval_dtor(p_width);
4182 zval_dtor(p_height);
4183 ZVAL_LONG(p_width, ImageInfo.Thumbnail.width);
4184 ZVAL_LONG(p_height, ImageInfo.Thumbnail.height);
4185 }
4186 if (arg_c >= 4) {
4187 zval_dtor(p_imagetype);
4188 ZVAL_LONG(p_imagetype, ImageInfo.Thumbnail.filetype);
4189 }
4190
4191 #ifdef EXIF_DEBUG
4192 exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Discarding info");
4193 #endif
4194
4195 exif_discard_imageinfo(&ImageInfo);
4196
4197 #ifdef EXIF_DEBUG
4198 php_error_docref1(NULL, p_name, E_NOTICE, "Done");
4199 #endif
4200 }
4201 /* }}} */
4202
4203 /* {{{ proto int exif_imagetype(string imagefile)
4204 Get the type of an image */
PHP_FUNCTION(exif_imagetype)4205 PHP_FUNCTION(exif_imagetype)
4206 {
4207 char *imagefile;
4208 size_t imagefile_len;
4209 php_stream * stream;
4210 int itype = 0;
4211
4212 if (zend_parse_parameters(ZEND_NUM_ARGS(), "p", &imagefile, &imagefile_len) == FAILURE) {
4213 return;
4214 }
4215
4216 stream = php_stream_open_wrapper(imagefile, "rb", IGNORE_PATH|REPORT_ERRORS, NULL);
4217
4218 if (stream == NULL) {
4219 RETURN_FALSE;
4220 }
4221
4222 itype = php_getimagetype(stream, NULL);
4223
4224 php_stream_close(stream);
4225
4226 if (itype == IMAGE_FILETYPE_UNKNOWN) {
4227 RETURN_FALSE;
4228 } else {
4229 ZVAL_LONG(return_value, itype);
4230 }
4231 }
4232 /* }}} */
4233
4234 #endif
4235
4236 /*
4237 * Local variables:
4238 * tab-width: 4
4239 * c-basic-offset: 4
4240 * End:
4241 * vim600: sw=4 ts=4 tw=78 fdm=marker
4242 * vim<600: sw=4 ts=4 tw=78
4243 */
4244
