Annotation of embedaddon/php/ext/exif/exif.c, revision 1.1.1.1
1.1 misho 1: /*
2: +----------------------------------------------------------------------+
3: | PHP Version 5 |
4: +----------------------------------------------------------------------+
5: | Copyright (c) 1997-2012 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: exif.c 321634 2012-01-01 13:15:04Z felipe $ */
21:
22: /* ToDos
23: *
24: * See if example images from http://www.exif.org have illegal
25: * thumbnail sizes or if code is corrupt.
26: * Create/Update exif headers.
27: * Create/Remove/Update image thumbnails.
28: */
29:
30: /* Security
31: *
32: * At current time i do not see any security problems but a potential
33: * attacker could generate an image with recursive ifd pointers...(Marcus)
34: */
35:
36: #ifdef HAVE_CONFIG_H
37: #include "config.h"
38: #endif
39:
40: #include "php.h"
41: #include "ext/standard/file.h"
42:
43: #ifdef HAVE_STDINT_H
44: # include <stdint.h>
45: #endif
46: #ifdef HAVE_INTTYPES_H
47: # include <inttypes.h>
48: #endif
49: #ifdef PHP_WIN32
50: # include "win32/php_stdint.h"
51: #endif
52:
53: #if HAVE_EXIF
54:
55: /* When EXIF_DEBUG is defined the module generates a lot of debug messages
56: * that help understanding what is going on. This can and should be used
57: * while extending the module as it shows if you are at the right position.
58: * You are always considered to have a copy of TIFF6.0 and EXIF2.10 standard.
59: */
60: #undef EXIF_DEBUG
61:
62: #ifdef EXIF_DEBUG
63: #define EXIFERR_DC , const char *_file, size_t _line TSRMLS_DC
64: #define EXIFERR_CC , __FILE__, __LINE__ TSRMLS_CC
65: #else
66: #define EXIFERR_DC TSRMLS_DC
67: #define EXIFERR_CC TSRMLS_CC
68: #endif
69:
70: #undef EXIF_JPEG2000
71:
72: #include "php_exif.h"
73: #include <math.h>
74: #include "php_ini.h"
75: #include "ext/standard/php_string.h"
76: #include "ext/standard/php_image.h"
77: #include "ext/standard/info.h"
78:
79: #if defined(PHP_WIN32) || (HAVE_MBSTRING && !defined(COMPILE_DL_MBSTRING))
80: #define EXIF_USE_MBSTRING 1
81: #else
82: #define EXIF_USE_MBSTRING 0
83: #endif
84:
85: #if EXIF_USE_MBSTRING
86: #include "ext/mbstring/mbstring.h"
87: #endif
88:
89: /* needed for ssize_t definition */
90: #include <sys/types.h>
91:
92: typedef unsigned char uchar;
93:
94: #ifndef safe_emalloc
95: # define safe_emalloc(a,b,c) emalloc((a)*(b)+(c))
96: #endif
97: #ifndef safe_erealloc
98: # define safe_erealloc(p,a,b,c) erealloc(p, (a)*(b)+(c))
99: #endif
100:
101: #ifndef TRUE
102: # define TRUE 1
103: # define FALSE 0
104: #endif
105:
106: #ifndef max
107: # define max(a,b) ((a)>(b) ? (a) : (b))
108: #endif
109:
110: #define EFREE_IF(ptr) if (ptr) efree(ptr)
111:
112: #define MAX_IFD_NESTING_LEVEL 100
113:
114: /* {{{ arginfo */
115: ZEND_BEGIN_ARG_INFO(arginfo_exif_tagname, 0)
116: ZEND_ARG_INFO(0, index)
117: ZEND_END_ARG_INFO()
118:
119: ZEND_BEGIN_ARG_INFO_EX(arginfo_exif_read_data, 0, 0, 1)
120: ZEND_ARG_INFO(0, filename)
121: ZEND_ARG_INFO(0, sections_needed)
122: ZEND_ARG_INFO(0, sub_arrays)
123: ZEND_ARG_INFO(0, read_thumbnail)
124: ZEND_END_ARG_INFO()
125:
126: ZEND_BEGIN_ARG_INFO_EX(arginfo_exif_thumbnail, 0, 0, 1)
127: ZEND_ARG_INFO(0, filename)
128: ZEND_ARG_INFO(1, width)
129: ZEND_ARG_INFO(1, height)
130: ZEND_ARG_INFO(1, imagetype)
131: ZEND_END_ARG_INFO()
132:
133: ZEND_BEGIN_ARG_INFO(arginfo_exif_imagetype, 0)
134: ZEND_ARG_INFO(0, imagefile)
135: ZEND_END_ARG_INFO()
136:
137: /* }}} */
138:
139: /* {{{ exif_functions[]
140: */
141: const zend_function_entry exif_functions[] = {
142: PHP_FE(exif_read_data, arginfo_exif_read_data)
143: PHP_FALIAS(read_exif_data, exif_read_data, arginfo_exif_read_data)
144: PHP_FE(exif_tagname, arginfo_exif_tagname)
145: PHP_FE(exif_thumbnail, arginfo_exif_thumbnail)
146: PHP_FE(exif_imagetype, arginfo_exif_imagetype)
147: PHP_FE_END
148: };
149: /* }}} */
150:
151: #define EXIF_VERSION "1.4 $Id: exif.c 321634 2012-01-01 13:15:04Z felipe $"
152:
153: /* {{{ PHP_MINFO_FUNCTION
154: */
155: PHP_MINFO_FUNCTION(exif)
156: {
157: php_info_print_table_start();
158: php_info_print_table_row(2, "EXIF Support", "enabled");
159: php_info_print_table_row(2, "EXIF Version", EXIF_VERSION);
160: php_info_print_table_row(2, "Supported EXIF Version", "0220");
161: php_info_print_table_row(2, "Supported filetypes", "JPEG,TIFF");
162: php_info_print_table_end();
163: DISPLAY_INI_ENTRIES();
164: }
165: /* }}} */
166:
167: ZEND_BEGIN_MODULE_GLOBALS(exif)
168: char * encode_unicode;
169: char * decode_unicode_be;
170: char * decode_unicode_le;
171: char * encode_jis;
172: char * decode_jis_be;
173: char * decode_jis_le;
174: ZEND_END_MODULE_GLOBALS(exif)
175:
176: ZEND_DECLARE_MODULE_GLOBALS(exif)
177:
178: #ifdef ZTS
179: #define EXIF_G(v) TSRMG(exif_globals_id, zend_exif_globals *, v)
180: #else
181: #define EXIF_G(v) (exif_globals.v)
182: #endif
183:
184: /* {{{ PHP_INI
185: */
186:
187: ZEND_INI_MH(OnUpdateEncode)
188: {
189: #if EXIF_USE_MBSTRING
190: if (new_value && strlen(new_value) && !php_mb_check_encoding_list(new_value TSRMLS_CC)) {
191: php_error_docref(NULL TSRMLS_CC, E_WARNING, "Illegal encoding ignored: '%s'", new_value);
192: return FAILURE;
193: }
194: #endif
195: return OnUpdateString(entry, new_value, new_value_length, mh_arg1, mh_arg2, mh_arg3, stage TSRMLS_CC);
196: }
197:
198: ZEND_INI_MH(OnUpdateDecode)
199: {
200: #if EXIF_USE_MBSTRING
201: if (!php_mb_check_encoding_list(new_value TSRMLS_CC)) {
202: php_error_docref(NULL TSRMLS_CC, E_WARNING, "Illegal encoding ignored: '%s'", new_value);
203: return FAILURE;
204: }
205: #endif
206: return OnUpdateString(entry, new_value, new_value_length, mh_arg1, mh_arg2, mh_arg3, stage TSRMLS_CC);
207: }
208:
209: PHP_INI_BEGIN()
210: STD_PHP_INI_ENTRY("exif.encode_unicode", "ISO-8859-15", PHP_INI_ALL, OnUpdateEncode, encode_unicode, zend_exif_globals, exif_globals)
211: STD_PHP_INI_ENTRY("exif.decode_unicode_motorola", "UCS-2BE", PHP_INI_ALL, OnUpdateDecode, decode_unicode_be, zend_exif_globals, exif_globals)
212: STD_PHP_INI_ENTRY("exif.decode_unicode_intel", "UCS-2LE", PHP_INI_ALL, OnUpdateDecode, decode_unicode_le, zend_exif_globals, exif_globals)
213: STD_PHP_INI_ENTRY("exif.encode_jis", "", PHP_INI_ALL, OnUpdateEncode, encode_jis, zend_exif_globals, exif_globals)
214: STD_PHP_INI_ENTRY("exif.decode_jis_motorola", "JIS", PHP_INI_ALL, OnUpdateDecode, decode_jis_be, zend_exif_globals, exif_globals)
215: STD_PHP_INI_ENTRY("exif.decode_jis_intel", "JIS", PHP_INI_ALL, OnUpdateDecode, decode_jis_le, zend_exif_globals, exif_globals)
216: PHP_INI_END()
217: /* }}} */
218:
219: /* {{{ PHP_GINIT_FUNCTION
220: */
221: static PHP_GINIT_FUNCTION(exif)
222: {
223: exif_globals->encode_unicode = NULL;
224: exif_globals->decode_unicode_be = NULL;
225: exif_globals->decode_unicode_le = NULL;
226: exif_globals->encode_jis = NULL;
227: exif_globals->decode_jis_be = NULL;
228: exif_globals->decode_jis_le = NULL;
229: }
230: /* }}} */
231:
232: /* {{{ PHP_MINIT_FUNCTION(exif)
233: Get the size of an image as 4-element array */
234: PHP_MINIT_FUNCTION(exif)
235: {
236: REGISTER_INI_ENTRIES();
237: REGISTER_LONG_CONSTANT("EXIF_USE_MBSTRING", EXIF_USE_MBSTRING, CONST_CS | CONST_PERSISTENT);
238: return SUCCESS;
239: }
240: /* }}} */
241:
242: /* {{{ PHP_MSHUTDOWN_FUNCTION
243: */
244: PHP_MSHUTDOWN_FUNCTION(exif)
245: {
246: UNREGISTER_INI_ENTRIES();
247: return SUCCESS;
248: }
249: /* }}} */
250:
251: /* {{{ exif dependencies */
252: static const zend_module_dep exif_module_deps[] = {
253: ZEND_MOD_REQUIRED("standard")
254: #if EXIF_USE_MBSTRING
255: ZEND_MOD_REQUIRED("mbstring")
256: #endif
257: ZEND_MOD_END
258: };
259: /* }}} */
260:
261: /* {{{ exif_module_entry
262: */
263: zend_module_entry exif_module_entry = {
264: STANDARD_MODULE_HEADER_EX, NULL,
265: exif_module_deps,
266: "exif",
267: exif_functions,
268: PHP_MINIT(exif),
269: PHP_MSHUTDOWN(exif),
270: NULL, NULL,
271: PHP_MINFO(exif),
272: #if ZEND_MODULE_API_NO >= 20010901
273: EXIF_VERSION,
274: #endif
275: #if ZEND_MODULE_API_NO >= 20060613
276: PHP_MODULE_GLOBALS(exif),
277: PHP_GINIT(exif),
278: NULL,
279: NULL,
280: STANDARD_MODULE_PROPERTIES_EX
281: #else
282: STANDARD_MODULE_PROPERTIES
283: #endif
284: };
285: /* }}} */
286:
287: #ifdef COMPILE_DL_EXIF
288: ZEND_GET_MODULE(exif)
289: #endif
290:
291: /* {{{ php_strnlen
292: * get length of string if buffer if less than buffer size or buffer size */
293: static size_t php_strnlen(char* str, size_t maxlen) {
294: size_t len = 0;
295:
296: if (str && maxlen && *str) {
297: do {
298: len++;
299: } while (--maxlen && *(++str));
300: }
301: return len;
302: }
303: /* }}} */
304:
305: /* {{{ error messages
306: */
307: static const char * EXIF_ERROR_FILEEOF = "Unexpected end of file reached";
308: static const char * EXIF_ERROR_CORRUPT = "File structure corrupted";
309: static const char * EXIF_ERROR_THUMBEOF = "Thumbnail goes IFD boundary or end of file reached";
310: static const char * EXIF_ERROR_FSREALLOC = "Illegal reallocating of undefined file section";
311:
312: #define EXIF_ERRLOG_FILEEOF(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_FILEEOF);
313: #define EXIF_ERRLOG_CORRUPT(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_CORRUPT);
314: #define EXIF_ERRLOG_THUMBEOF(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_THUMBEOF);
315: #define EXIF_ERRLOG_FSREALLOC(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_FSREALLOC);
316: /* }}} */
317:
318: /* {{{ format description defines
319: Describes format descriptor
320: */
321: static int php_tiff_bytes_per_format[] = {0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8, 1};
322: #define NUM_FORMATS 13
323:
324: #define TAG_FMT_BYTE 1
325: #define TAG_FMT_STRING 2
326: #define TAG_FMT_USHORT 3
327: #define TAG_FMT_ULONG 4
328: #define TAG_FMT_URATIONAL 5
329: #define TAG_FMT_SBYTE 6
330: #define TAG_FMT_UNDEFINED 7
331: #define TAG_FMT_SSHORT 8
332: #define TAG_FMT_SLONG 9
333: #define TAG_FMT_SRATIONAL 10
334: #define TAG_FMT_SINGLE 11
335: #define TAG_FMT_DOUBLE 12
336: #define TAG_FMT_IFD 13
337:
338: #ifdef EXIF_DEBUG
339: static char *exif_get_tagformat(int format)
340: {
341: switch(format) {
342: case TAG_FMT_BYTE: return "BYTE";
343: case TAG_FMT_STRING: return "STRING";
344: case TAG_FMT_USHORT: return "USHORT";
345: case TAG_FMT_ULONG: return "ULONG";
346: case TAG_FMT_URATIONAL: return "URATIONAL";
347: case TAG_FMT_SBYTE: return "SBYTE";
348: case TAG_FMT_UNDEFINED: return "UNDEFINED";
349: case TAG_FMT_SSHORT: return "SSHORT";
350: case TAG_FMT_SLONG: return "SLONG";
351: case TAG_FMT_SRATIONAL: return "SRATIONAL";
352: case TAG_FMT_SINGLE: return "SINGLE";
353: case TAG_FMT_DOUBLE: return "DOUBLE";
354: case TAG_FMT_IFD: return "IFD";
355: }
356: return "*Illegal";
357: }
358: #endif
359:
360: /* Describes tag values */
361: #define TAG_GPS_VERSION_ID 0x0000
362: #define TAG_GPS_LATITUDE_REF 0x0001
363: #define TAG_GPS_LATITUDE 0x0002
364: #define TAG_GPS_LONGITUDE_REF 0x0003
365: #define TAG_GPS_LONGITUDE 0x0004
366: #define TAG_GPS_ALTITUDE_REF 0x0005
367: #define TAG_GPS_ALTITUDE 0x0006
368: #define TAG_GPS_TIME_STAMP 0x0007
369: #define TAG_GPS_SATELLITES 0x0008
370: #define TAG_GPS_STATUS 0x0009
371: #define TAG_GPS_MEASURE_MODE 0x000A
372: #define TAG_GPS_DOP 0x000B
373: #define TAG_GPS_SPEED_REF 0x000C
374: #define TAG_GPS_SPEED 0x000D
375: #define TAG_GPS_TRACK_REF 0x000E
376: #define TAG_GPS_TRACK 0x000F
377: #define TAG_GPS_IMG_DIRECTION_REF 0x0010
378: #define TAG_GPS_IMG_DIRECTION 0x0011
379: #define TAG_GPS_MAP_DATUM 0x0012
380: #define TAG_GPS_DEST_LATITUDE_REF 0x0013
381: #define TAG_GPS_DEST_LATITUDE 0x0014
382: #define TAG_GPS_DEST_LONGITUDE_REF 0x0015
383: #define TAG_GPS_DEST_LONGITUDE 0x0016
384: #define TAG_GPS_DEST_BEARING_REF 0x0017
385: #define TAG_GPS_DEST_BEARING 0x0018
386: #define TAG_GPS_DEST_DISTANCE_REF 0x0019
387: #define TAG_GPS_DEST_DISTANCE 0x001A
388: #define TAG_GPS_PROCESSING_METHOD 0x001B
389: #define TAG_GPS_AREA_INFORMATION 0x001C
390: #define TAG_GPS_DATE_STAMP 0x001D
391: #define TAG_GPS_DIFFERENTIAL 0x001E
392: #define TAG_TIFF_COMMENT 0x00FE /* SHOUDLNT HAPPEN */
393: #define TAG_NEW_SUBFILE 0x00FE /* New version of subfile tag */
394: #define TAG_SUBFILE_TYPE 0x00FF /* Old version of subfile tag */
395: #define TAG_IMAGEWIDTH 0x0100
396: #define TAG_IMAGEHEIGHT 0x0101
397: #define TAG_BITS_PER_SAMPLE 0x0102
398: #define TAG_COMPRESSION 0x0103
399: #define TAG_PHOTOMETRIC_INTERPRETATION 0x0106
400: #define TAG_TRESHHOLDING 0x0107
401: #define TAG_CELL_WIDTH 0x0108
402: #define TAG_CELL_HEIGHT 0x0109
403: #define TAG_FILL_ORDER 0x010A
404: #define TAG_DOCUMENT_NAME 0x010D
405: #define TAG_IMAGE_DESCRIPTION 0x010E
406: #define TAG_MAKE 0x010F
407: #define TAG_MODEL 0x0110
408: #define TAG_STRIP_OFFSETS 0x0111
409: #define TAG_ORIENTATION 0x0112
410: #define TAG_SAMPLES_PER_PIXEL 0x0115
411: #define TAG_ROWS_PER_STRIP 0x0116
412: #define TAG_STRIP_BYTE_COUNTS 0x0117
413: #define TAG_MIN_SAMPPLE_VALUE 0x0118
414: #define TAG_MAX_SAMPLE_VALUE 0x0119
415: #define TAG_X_RESOLUTION 0x011A
416: #define TAG_Y_RESOLUTION 0x011B
417: #define TAG_PLANAR_CONFIGURATION 0x011C
418: #define TAG_PAGE_NAME 0x011D
419: #define TAG_X_POSITION 0x011E
420: #define TAG_Y_POSITION 0x011F
421: #define TAG_FREE_OFFSETS 0x0120
422: #define TAG_FREE_BYTE_COUNTS 0x0121
423: #define TAG_GRAY_RESPONSE_UNIT 0x0122
424: #define TAG_GRAY_RESPONSE_CURVE 0x0123
425: #define TAG_RESOLUTION_UNIT 0x0128
426: #define TAG_PAGE_NUMBER 0x0129
427: #define TAG_TRANSFER_FUNCTION 0x012D
428: #define TAG_SOFTWARE 0x0131
429: #define TAG_DATETIME 0x0132
430: #define TAG_ARTIST 0x013B
431: #define TAG_HOST_COMPUTER 0x013C
432: #define TAG_PREDICTOR 0x013D
433: #define TAG_WHITE_POINT 0x013E
434: #define TAG_PRIMARY_CHROMATICITIES 0x013F
435: #define TAG_COLOR_MAP 0x0140
436: #define TAG_HALFTONE_HINTS 0x0141
437: #define TAG_TILE_WIDTH 0x0142
438: #define TAG_TILE_LENGTH 0x0143
439: #define TAG_TILE_OFFSETS 0x0144
440: #define TAG_TILE_BYTE_COUNTS 0x0145
441: #define TAG_SUB_IFD 0x014A
442: #define TAG_INK_SETMPUTER 0x014C
443: #define TAG_INK_NAMES 0x014D
444: #define TAG_NUMBER_OF_INKS 0x014E
445: #define TAG_DOT_RANGE 0x0150
446: #define TAG_TARGET_PRINTER 0x0151
447: #define TAG_EXTRA_SAMPLE 0x0152
448: #define TAG_SAMPLE_FORMAT 0x0153
449: #define TAG_S_MIN_SAMPLE_VALUE 0x0154
450: #define TAG_S_MAX_SAMPLE_VALUE 0x0155
451: #define TAG_TRANSFER_RANGE 0x0156
452: #define TAG_JPEG_TABLES 0x015B
453: #define TAG_JPEG_PROC 0x0200
454: #define TAG_JPEG_INTERCHANGE_FORMAT 0x0201
455: #define TAG_JPEG_INTERCHANGE_FORMAT_LEN 0x0202
456: #define TAG_JPEG_RESTART_INTERVAL 0x0203
457: #define TAG_JPEG_LOSSLESS_PREDICTOR 0x0205
458: #define TAG_JPEG_POINT_TRANSFORMS 0x0206
459: #define TAG_JPEG_Q_TABLES 0x0207
460: #define TAG_JPEG_DC_TABLES 0x0208
461: #define TAG_JPEG_AC_TABLES 0x0209
462: #define TAG_YCC_COEFFICIENTS 0x0211
463: #define TAG_YCC_SUB_SAMPLING 0x0212
464: #define TAG_YCC_POSITIONING 0x0213
465: #define TAG_REFERENCE_BLACK_WHITE 0x0214
466: /* 0x0301 - 0x0302 */
467: /* 0x0320 */
468: /* 0x0343 */
469: /* 0x5001 - 0x501B */
470: /* 0x5021 - 0x503B */
471: /* 0x5090 - 0x5091 */
472: /* 0x5100 - 0x5101 */
473: /* 0x5110 - 0x5113 */
474: /* 0x80E3 - 0x80E6 */
475: /* 0x828d - 0x828F */
476: #define TAG_COPYRIGHT 0x8298
477: #define TAG_EXPOSURETIME 0x829A
478: #define TAG_FNUMBER 0x829D
479: #define TAG_EXIF_IFD_POINTER 0x8769
480: #define TAG_ICC_PROFILE 0x8773
481: #define TAG_EXPOSURE_PROGRAM 0x8822
482: #define TAG_SPECTRAL_SENSITY 0x8824
483: #define TAG_GPS_IFD_POINTER 0x8825
484: #define TAG_ISOSPEED 0x8827
485: #define TAG_OPTOELECTRIC_CONVERSION_F 0x8828
486: /* 0x8829 - 0x882b */
487: #define TAG_EXIFVERSION 0x9000
488: #define TAG_DATE_TIME_ORIGINAL 0x9003
489: #define TAG_DATE_TIME_DIGITIZED 0x9004
490: #define TAG_COMPONENT_CONFIG 0x9101
491: #define TAG_COMPRESSED_BITS_PER_PIXEL 0x9102
492: #define TAG_SHUTTERSPEED 0x9201
493: #define TAG_APERTURE 0x9202
494: #define TAG_BRIGHTNESS_VALUE 0x9203
495: #define TAG_EXPOSURE_BIAS_VALUE 0x9204
496: #define TAG_MAX_APERTURE 0x9205
497: #define TAG_SUBJECT_DISTANCE 0x9206
498: #define TAG_METRIC_MODULE 0x9207
499: #define TAG_LIGHT_SOURCE 0x9208
500: #define TAG_FLASH 0x9209
501: #define TAG_FOCAL_LENGTH 0x920A
502: /* 0x920B - 0x920D */
503: /* 0x9211 - 0x9216 */
504: #define TAG_SUBJECT_AREA 0x9214
505: #define TAG_MAKER_NOTE 0x927C
506: #define TAG_USERCOMMENT 0x9286
507: #define TAG_SUB_SEC_TIME 0x9290
508: #define TAG_SUB_SEC_TIME_ORIGINAL 0x9291
509: #define TAG_SUB_SEC_TIME_DIGITIZED 0x9292
510: /* 0x923F */
511: /* 0x935C */
512: #define TAG_XP_TITLE 0x9C9B
513: #define TAG_XP_COMMENTS 0x9C9C
514: #define TAG_XP_AUTHOR 0x9C9D
515: #define TAG_XP_KEYWORDS 0x9C9E
516: #define TAG_XP_SUBJECT 0x9C9F
517: #define TAG_FLASH_PIX_VERSION 0xA000
518: #define TAG_COLOR_SPACE 0xA001
519: #define TAG_COMP_IMAGE_WIDTH 0xA002 /* compressed images only */
520: #define TAG_COMP_IMAGE_HEIGHT 0xA003
521: #define TAG_RELATED_SOUND_FILE 0xA004
522: #define TAG_INTEROP_IFD_POINTER 0xA005 /* IFD pointer */
523: #define TAG_FLASH_ENERGY 0xA20B
524: #define TAG_SPATIAL_FREQUENCY_RESPONSE 0xA20C
525: #define TAG_FOCALPLANE_X_RES 0xA20E
526: #define TAG_FOCALPLANE_Y_RES 0xA20F
527: #define TAG_FOCALPLANE_RESOLUTION_UNIT 0xA210
528: #define TAG_SUBJECT_LOCATION 0xA214
529: #define TAG_EXPOSURE_INDEX 0xA215
530: #define TAG_SENSING_METHOD 0xA217
531: #define TAG_FILE_SOURCE 0xA300
532: #define TAG_SCENE_TYPE 0xA301
533: #define TAG_CFA_PATTERN 0xA302
534: #define TAG_CUSTOM_RENDERED 0xA401
535: #define TAG_EXPOSURE_MODE 0xA402
536: #define TAG_WHITE_BALANCE 0xA403
537: #define TAG_DIGITAL_ZOOM_RATIO 0xA404
538: #define TAG_FOCAL_LENGTH_IN_35_MM_FILM 0xA405
539: #define TAG_SCENE_CAPTURE_TYPE 0xA406
540: #define TAG_GAIN_CONTROL 0xA407
541: #define TAG_CONTRAST 0xA408
542: #define TAG_SATURATION 0xA409
543: #define TAG_SHARPNESS 0xA40A
544: #define TAG_DEVICE_SETTING_DESCRIPTION 0xA40B
545: #define TAG_SUBJECT_DISTANCE_RANGE 0xA40C
546: #define TAG_IMAGE_UNIQUE_ID 0xA420
547:
548: /* Olympus specific tags */
549: #define TAG_OLYMPUS_SPECIALMODE 0x0200
550: #define TAG_OLYMPUS_JPEGQUAL 0x0201
551: #define TAG_OLYMPUS_MACRO 0x0202
552: #define TAG_OLYMPUS_DIGIZOOM 0x0204
553: #define TAG_OLYMPUS_SOFTWARERELEASE 0x0207
554: #define TAG_OLYMPUS_PICTINFO 0x0208
555: #define TAG_OLYMPUS_CAMERAID 0x0209
556: /* end Olympus specific tags */
557:
558: /* Internal */
559: #define TAG_NONE -1 /* note that -1 <> 0xFFFF */
560: #define TAG_COMPUTED_VALUE -2
561: #define TAG_END_OF_LIST 0xFFFD
562:
563: /* Values for TAG_PHOTOMETRIC_INTERPRETATION */
564: #define PMI_BLACK_IS_ZERO 0
565: #define PMI_WHITE_IS_ZERO 1
566: #define PMI_RGB 2
567: #define PMI_PALETTE_COLOR 3
568: #define PMI_TRANSPARENCY_MASK 4
569: #define PMI_SEPARATED 5
570: #define PMI_YCBCR 6
571: #define PMI_CIELAB 8
572:
573: /* }}} */
574:
575: /* {{{ TabTable[]
576: */
577: typedef const struct {
578: unsigned short Tag;
579: char *Desc;
580: } tag_info_type;
581:
582: typedef tag_info_type tag_info_array[];
583: typedef tag_info_type *tag_table_type;
584:
585: #define TAG_TABLE_END \
586: {TAG_NONE, "No tag value"},\
587: {TAG_COMPUTED_VALUE, "Computed value"},\
588: {TAG_END_OF_LIST, ""} /* Important for exif_get_tagname() IF value != "" function result is != false */
589:
590: static tag_info_array tag_table_IFD = {
591: { 0x000B, "ACDComment"},
592: { 0x00FE, "NewSubFile"}, /* better name it 'ImageType' ? */
593: { 0x00FF, "SubFile"},
594: { 0x0100, "ImageWidth"},
595: { 0x0101, "ImageLength"},
596: { 0x0102, "BitsPerSample"},
597: { 0x0103, "Compression"},
598: { 0x0106, "PhotometricInterpretation"},
599: { 0x010A, "FillOrder"},
600: { 0x010D, "DocumentName"},
601: { 0x010E, "ImageDescription"},
602: { 0x010F, "Make"},
603: { 0x0110, "Model"},
604: { 0x0111, "StripOffsets"},
605: { 0x0112, "Orientation"},
606: { 0x0115, "SamplesPerPixel"},
607: { 0x0116, "RowsPerStrip"},
608: { 0x0117, "StripByteCounts"},
609: { 0x0118, "MinSampleValue"},
610: { 0x0119, "MaxSampleValue"},
611: { 0x011A, "XResolution"},
612: { 0x011B, "YResolution"},
613: { 0x011C, "PlanarConfiguration"},
614: { 0x011D, "PageName"},
615: { 0x011E, "XPosition"},
616: { 0x011F, "YPosition"},
617: { 0x0120, "FreeOffsets"},
618: { 0x0121, "FreeByteCounts"},
619: { 0x0122, "GrayResponseUnit"},
620: { 0x0123, "GrayResponseCurve"},
621: { 0x0124, "T4Options"},
622: { 0x0125, "T6Options"},
623: { 0x0128, "ResolutionUnit"},
624: { 0x0129, "PageNumber"},
625: { 0x012D, "TransferFunction"},
626: { 0x0131, "Software"},
627: { 0x0132, "DateTime"},
628: { 0x013B, "Artist"},
629: { 0x013C, "HostComputer"},
630: { 0x013D, "Predictor"},
631: { 0x013E, "WhitePoint"},
632: { 0x013F, "PrimaryChromaticities"},
633: { 0x0140, "ColorMap"},
634: { 0x0141, "HalfToneHints"},
635: { 0x0142, "TileWidth"},
636: { 0x0143, "TileLength"},
637: { 0x0144, "TileOffsets"},
638: { 0x0145, "TileByteCounts"},
639: { 0x014A, "SubIFD"},
640: { 0x014C, "InkSet"},
641: { 0x014D, "InkNames"},
642: { 0x014E, "NumberOfInks"},
643: { 0x0150, "DotRange"},
644: { 0x0151, "TargetPrinter"},
645: { 0x0152, "ExtraSample"},
646: { 0x0153, "SampleFormat"},
647: { 0x0154, "SMinSampleValue"},
648: { 0x0155, "SMaxSampleValue"},
649: { 0x0156, "TransferRange"},
650: { 0x0157, "ClipPath"},
651: { 0x0158, "XClipPathUnits"},
652: { 0x0159, "YClipPathUnits"},
653: { 0x015A, "Indexed"},
654: { 0x015B, "JPEGTables"},
655: { 0x015F, "OPIProxy"},
656: { 0x0200, "JPEGProc"},
657: { 0x0201, "JPEGInterchangeFormat"},
658: { 0x0202, "JPEGInterchangeFormatLength"},
659: { 0x0203, "JPEGRestartInterval"},
660: { 0x0205, "JPEGLosslessPredictors"},
661: { 0x0206, "JPEGPointTransforms"},
662: { 0x0207, "JPEGQTables"},
663: { 0x0208, "JPEGDCTables"},
664: { 0x0209, "JPEGACTables"},
665: { 0x0211, "YCbCrCoefficients"},
666: { 0x0212, "YCbCrSubSampling"},
667: { 0x0213, "YCbCrPositioning"},
668: { 0x0214, "ReferenceBlackWhite"},
669: { 0x02BC, "ExtensibleMetadataPlatform"}, /* XAP: Extensible Authoring Publishing, obsoleted by XMP: Extensible Metadata Platform */
670: { 0x0301, "Gamma"},
671: { 0x0302, "ICCProfileDescriptor"},
672: { 0x0303, "SRGBRenderingIntent"},
673: { 0x0320, "ImageTitle"},
674: { 0x5001, "ResolutionXUnit"},
675: { 0x5002, "ResolutionYUnit"},
676: { 0x5003, "ResolutionXLengthUnit"},
677: { 0x5004, "ResolutionYLengthUnit"},
678: { 0x5005, "PrintFlags"},
679: { 0x5006, "PrintFlagsVersion"},
680: { 0x5007, "PrintFlagsCrop"},
681: { 0x5008, "PrintFlagsBleedWidth"},
682: { 0x5009, "PrintFlagsBleedWidthScale"},
683: { 0x500A, "HalftoneLPI"},
684: { 0x500B, "HalftoneLPIUnit"},
685: { 0x500C, "HalftoneDegree"},
686: { 0x500D, "HalftoneShape"},
687: { 0x500E, "HalftoneMisc"},
688: { 0x500F, "HalftoneScreen"},
689: { 0x5010, "JPEGQuality"},
690: { 0x5011, "GridSize"},
691: { 0x5012, "ThumbnailFormat"},
692: { 0x5013, "ThumbnailWidth"},
693: { 0x5014, "ThumbnailHeight"},
694: { 0x5015, "ThumbnailColorDepth"},
695: { 0x5016, "ThumbnailPlanes"},
696: { 0x5017, "ThumbnailRawBytes"},
697: { 0x5018, "ThumbnailSize"},
698: { 0x5019, "ThumbnailCompressedSize"},
699: { 0x501A, "ColorTransferFunction"},
700: { 0x501B, "ThumbnailData"},
701: { 0x5020, "ThumbnailImageWidth"},
702: { 0x5021, "ThumbnailImageHeight"},
703: { 0x5022, "ThumbnailBitsPerSample"},
704: { 0x5023, "ThumbnailCompression"},
705: { 0x5024, "ThumbnailPhotometricInterp"},
706: { 0x5025, "ThumbnailImageDescription"},
707: { 0x5026, "ThumbnailEquipMake"},
708: { 0x5027, "ThumbnailEquipModel"},
709: { 0x5028, "ThumbnailStripOffsets"},
710: { 0x5029, "ThumbnailOrientation"},
711: { 0x502A, "ThumbnailSamplesPerPixel"},
712: { 0x502B, "ThumbnailRowsPerStrip"},
713: { 0x502C, "ThumbnailStripBytesCount"},
714: { 0x502D, "ThumbnailResolutionX"},
715: { 0x502E, "ThumbnailResolutionY"},
716: { 0x502F, "ThumbnailPlanarConfig"},
717: { 0x5030, "ThumbnailResolutionUnit"},
718: { 0x5031, "ThumbnailTransferFunction"},
719: { 0x5032, "ThumbnailSoftwareUsed"},
720: { 0x5033, "ThumbnailDateTime"},
721: { 0x5034, "ThumbnailArtist"},
722: { 0x5035, "ThumbnailWhitePoint"},
723: { 0x5036, "ThumbnailPrimaryChromaticities"},
724: { 0x5037, "ThumbnailYCbCrCoefficients"},
725: { 0x5038, "ThumbnailYCbCrSubsampling"},
726: { 0x5039, "ThumbnailYCbCrPositioning"},
727: { 0x503A, "ThumbnailRefBlackWhite"},
728: { 0x503B, "ThumbnailCopyRight"},
729: { 0x5090, "LuminanceTable"},
730: { 0x5091, "ChrominanceTable"},
731: { 0x5100, "FrameDelay"},
732: { 0x5101, "LoopCount"},
733: { 0x5110, "PixelUnit"},
734: { 0x5111, "PixelPerUnitX"},
735: { 0x5112, "PixelPerUnitY"},
736: { 0x5113, "PaletteHistogram"},
737: { 0x1000, "RelatedImageFileFormat"},
738: { 0x800D, "ImageID"},
739: { 0x80E3, "Matteing"}, /* obsoleted by ExtraSamples */
740: { 0x80E4, "DataType"}, /* obsoleted by SampleFormat */
741: { 0x80E5, "ImageDepth"},
742: { 0x80E6, "TileDepth"},
743: { 0x828D, "CFARepeatPatternDim"},
744: { 0x828E, "CFAPattern"},
745: { 0x828F, "BatteryLevel"},
746: { 0x8298, "Copyright"},
747: { 0x829A, "ExposureTime"},
748: { 0x829D, "FNumber"},
749: { 0x83BB, "IPTC/NAA"},
750: { 0x84E3, "IT8RasterPadding"},
751: { 0x84E5, "IT8ColorTable"},
752: { 0x8649, "ImageResourceInformation"}, /* PhotoShop */
753: { 0x8769, "Exif_IFD_Pointer"},
754: { 0x8773, "ICC_Profile"},
755: { 0x8822, "ExposureProgram"},
756: { 0x8824, "SpectralSensity"},
757: { 0x8828, "OECF"},
758: { 0x8825, "GPS_IFD_Pointer"},
759: { 0x8827, "ISOSpeedRatings"},
760: { 0x8828, "OECF"},
761: { 0x9000, "ExifVersion"},
762: { 0x9003, "DateTimeOriginal"},
763: { 0x9004, "DateTimeDigitized"},
764: { 0x9101, "ComponentsConfiguration"},
765: { 0x9102, "CompressedBitsPerPixel"},
766: { 0x9201, "ShutterSpeedValue"},
767: { 0x9202, "ApertureValue"},
768: { 0x9203, "BrightnessValue"},
769: { 0x9204, "ExposureBiasValue"},
770: { 0x9205, "MaxApertureValue"},
771: { 0x9206, "SubjectDistance"},
772: { 0x9207, "MeteringMode"},
773: { 0x9208, "LightSource"},
774: { 0x9209, "Flash"},
775: { 0x920A, "FocalLength"},
776: { 0x920B, "FlashEnergy"}, /* 0xA20B in JPEG */
777: { 0x920C, "SpatialFrequencyResponse"}, /* 0xA20C - - */
778: { 0x920D, "Noise"},
779: { 0x920E, "FocalPlaneXResolution"}, /* 0xA20E - - */
780: { 0x920F, "FocalPlaneYResolution"}, /* 0xA20F - - */
781: { 0x9210, "FocalPlaneResolutionUnit"}, /* 0xA210 - - */
782: { 0x9211, "ImageNumber"},
783: { 0x9212, "SecurityClassification"},
784: { 0x9213, "ImageHistory"},
785: { 0x9214, "SubjectLocation"}, /* 0xA214 - - */
786: { 0x9215, "ExposureIndex"}, /* 0xA215 - - */
787: { 0x9216, "TIFF/EPStandardID"},
788: { 0x9217, "SensingMethod"}, /* 0xA217 - - */
789: { 0x923F, "StoNits"},
790: { 0x927C, "MakerNote"},
791: { 0x9286, "UserComment"},
792: { 0x9290, "SubSecTime"},
793: { 0x9291, "SubSecTimeOriginal"},
794: { 0x9292, "SubSecTimeDigitized"},
795: { 0x935C, "ImageSourceData"}, /* "Adobe Photoshop Document Data Block": 8BIM... */
796: { 0x9c9b, "Title" }, /* Win XP specific, Unicode */
797: { 0x9c9c, "Comments" }, /* Win XP specific, Unicode */
798: { 0x9c9d, "Author" }, /* Win XP specific, Unicode */
799: { 0x9c9e, "Keywords" }, /* Win XP specific, Unicode */
800: { 0x9c9f, "Subject" }, /* Win XP specific, Unicode, not to be confused with SubjectDistance and SubjectLocation */
801: { 0xA000, "FlashPixVersion"},
802: { 0xA001, "ColorSpace"},
803: { 0xA002, "ExifImageWidth"},
804: { 0xA003, "ExifImageLength"},
805: { 0xA004, "RelatedSoundFile"},
806: { 0xA005, "InteroperabilityOffset"},
807: { 0xA20B, "FlashEnergy"}, /* 0x920B in TIFF/EP */
808: { 0xA20C, "SpatialFrequencyResponse"}, /* 0x920C - - */
809: { 0xA20D, "Noise"},
810: { 0xA20E, "FocalPlaneXResolution"}, /* 0x920E - - */
811: { 0xA20F, "FocalPlaneYResolution"}, /* 0x920F - - */
812: { 0xA210, "FocalPlaneResolutionUnit"}, /* 0x9210 - - */
813: { 0xA211, "ImageNumber"},
814: { 0xA212, "SecurityClassification"},
815: { 0xA213, "ImageHistory"},
816: { 0xA214, "SubjectLocation"}, /* 0x9214 - - */
817: { 0xA215, "ExposureIndex"}, /* 0x9215 - - */
818: { 0xA216, "TIFF/EPStandardID"},
819: { 0xA217, "SensingMethod"}, /* 0x9217 - - */
820: { 0xA300, "FileSource"},
821: { 0xA301, "SceneType"},
822: { 0xA302, "CFAPattern"},
823: { 0xA401, "CustomRendered"},
824: { 0xA402, "ExposureMode"},
825: { 0xA403, "WhiteBalance"},
826: { 0xA404, "DigitalZoomRatio"},
827: { 0xA405, "FocalLengthIn35mmFilm"},
828: { 0xA406, "SceneCaptureType"},
829: { 0xA407, "GainControl"},
830: { 0xA408, "Contrast"},
831: { 0xA409, "Saturation"},
832: { 0xA40A, "Sharpness"},
833: { 0xA40B, "DeviceSettingDescription"},
834: { 0xA40C, "SubjectDistanceRange"},
835: { 0xA420, "ImageUniqueID"},
836: TAG_TABLE_END
837: } ;
838:
839: static tag_info_array tag_table_GPS = {
840: { 0x0000, "GPSVersion"},
841: { 0x0001, "GPSLatitudeRef"},
842: { 0x0002, "GPSLatitude"},
843: { 0x0003, "GPSLongitudeRef"},
844: { 0x0004, "GPSLongitude"},
845: { 0x0005, "GPSAltitudeRef"},
846: { 0x0006, "GPSAltitude"},
847: { 0x0007, "GPSTimeStamp"},
848: { 0x0008, "GPSSatellites"},
849: { 0x0009, "GPSStatus"},
850: { 0x000A, "GPSMeasureMode"},
851: { 0x000B, "GPSDOP"},
852: { 0x000C, "GPSSpeedRef"},
853: { 0x000D, "GPSSpeed"},
854: { 0x000E, "GPSTrackRef"},
855: { 0x000F, "GPSTrack"},
856: { 0x0010, "GPSImgDirectionRef"},
857: { 0x0011, "GPSImgDirection"},
858: { 0x0012, "GPSMapDatum"},
859: { 0x0013, "GPSDestLatitudeRef"},
860: { 0x0014, "GPSDestLatitude"},
861: { 0x0015, "GPSDestLongitudeRef"},
862: { 0x0016, "GPSDestLongitude"},
863: { 0x0017, "GPSDestBearingRef"},
864: { 0x0018, "GPSDestBearing"},
865: { 0x0019, "GPSDestDistanceRef"},
866: { 0x001A, "GPSDestDistance"},
867: { 0x001B, "GPSProcessingMode"},
868: { 0x001C, "GPSAreaInformation"},
869: { 0x001D, "GPSDateStamp"},
870: { 0x001E, "GPSDifferential"},
871: TAG_TABLE_END
872: };
873:
874: static tag_info_array tag_table_IOP = {
875: { 0x0001, "InterOperabilityIndex"}, /* should be 'R98' or 'THM' */
876: { 0x0002, "InterOperabilityVersion"},
877: { 0x1000, "RelatedFileFormat"},
878: { 0x1001, "RelatedImageWidth"},
879: { 0x1002, "RelatedImageHeight"},
880: TAG_TABLE_END
881: };
882:
883: static tag_info_array tag_table_VND_CANON = {
884: { 0x0001, "ModeArray"}, /* guess */
885: { 0x0004, "ImageInfo"}, /* guess */
886: { 0x0006, "ImageType"},
887: { 0x0007, "FirmwareVersion"},
888: { 0x0008, "ImageNumber"},
889: { 0x0009, "OwnerName"},
890: { 0x000C, "Camera"},
891: { 0x000F, "CustomFunctions"},
892: TAG_TABLE_END
893: };
894:
895: static tag_info_array tag_table_VND_CASIO = {
896: { 0x0001, "RecordingMode"},
897: { 0x0002, "Quality"},
898: { 0x0003, "FocusingMode"},
899: { 0x0004, "FlashMode"},
900: { 0x0005, "FlashIntensity"},
901: { 0x0006, "ObjectDistance"},
902: { 0x0007, "WhiteBalance"},
903: { 0x000A, "DigitalZoom"},
904: { 0x000B, "Sharpness"},
905: { 0x000C, "Contrast"},
906: { 0x000D, "Saturation"},
907: { 0x0014, "CCDSensitivity"},
908: TAG_TABLE_END
909: };
910:
911: static tag_info_array tag_table_VND_FUJI = {
912: { 0x0000, "Version"},
913: { 0x1000, "Quality"},
914: { 0x1001, "Sharpness"},
915: { 0x1002, "WhiteBalance"},
916: { 0x1003, "Color"},
917: { 0x1004, "Tone"},
918: { 0x1010, "FlashMode"},
919: { 0x1011, "FlashStrength"},
920: { 0x1020, "Macro"},
921: { 0x1021, "FocusMode"},
922: { 0x1030, "SlowSync"},
923: { 0x1031, "PictureMode"},
924: { 0x1100, "ContTake"},
925: { 0x1300, "BlurWarning"},
926: { 0x1301, "FocusWarning"},
927: { 0x1302, "AEWarning "},
928: TAG_TABLE_END
929: };
930:
931: static tag_info_array tag_table_VND_NIKON = {
932: { 0x0003, "Quality"},
933: { 0x0004, "ColorMode"},
934: { 0x0005, "ImageAdjustment"},
935: { 0x0006, "CCDSensitivity"},
936: { 0x0007, "WhiteBalance"},
937: { 0x0008, "Focus"},
938: { 0x000a, "DigitalZoom"},
939: { 0x000b, "Converter"},
940: TAG_TABLE_END
941: };
942:
943: static tag_info_array tag_table_VND_NIKON_990 = {
944: { 0x0001, "Version"},
945: { 0x0002, "ISOSetting"},
946: { 0x0003, "ColorMode"},
947: { 0x0004, "Quality"},
948: { 0x0005, "WhiteBalance"},
949: { 0x0006, "ImageSharpening"},
950: { 0x0007, "FocusMode"},
951: { 0x0008, "FlashSetting"},
952: { 0x000F, "ISOSelection"},
953: { 0x0080, "ImageAdjustment"},
954: { 0x0082, "AuxiliaryLens"},
955: { 0x0085, "ManualFocusDistance"},
956: { 0x0086, "DigitalZoom"},
957: { 0x0088, "AFFocusPosition"},
958: { 0x0010, "DataDump"},
959: TAG_TABLE_END
960: };
961:
962: static tag_info_array tag_table_VND_OLYMPUS = {
963: { 0x0200, "SpecialMode"},
964: { 0x0201, "JPEGQuality"},
965: { 0x0202, "Macro"},
966: { 0x0204, "DigitalZoom"},
967: { 0x0207, "SoftwareRelease"},
968: { 0x0208, "PictureInfo"},
969: { 0x0209, "CameraId"},
970: { 0x0F00, "DataDump"},
971: TAG_TABLE_END
972: };
973:
974: typedef enum mn_byte_order_t {
975: MN_ORDER_INTEL = 0,
976: MN_ORDER_MOTOROLA = 1,
977: MN_ORDER_NORMAL
978: } mn_byte_order_t;
979:
980: typedef enum mn_offset_mode_t {
981: MN_OFFSET_NORMAL,
982: MN_OFFSET_MAKER,
983: MN_OFFSET_GUESS
984: } mn_offset_mode_t;
985:
986: typedef struct {
987: tag_table_type tag_table;
988: char * make;
989: char * model;
990: char * id_string;
991: int id_string_len;
992: int offset;
993: mn_byte_order_t byte_order;
994: mn_offset_mode_t offset_mode;
995: } maker_note_type;
996:
997: static const maker_note_type maker_note_array[] = {
998: { tag_table_VND_CANON, "Canon", NULL, NULL, 0, 0, MN_ORDER_INTEL, MN_OFFSET_GUESS},
999: /* { tag_table_VND_CANON, "Canon", NULL, NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},*/
1000: { tag_table_VND_CASIO, "CASIO", NULL, NULL, 0, 0, MN_ORDER_MOTOROLA, MN_OFFSET_NORMAL},
1001: { tag_table_VND_FUJI, "FUJIFILM", NULL, "FUJIFILM\x0C\x00\x00\x00", 12, 12, MN_ORDER_INTEL, MN_OFFSET_MAKER},
1002: { tag_table_VND_NIKON, "NIKON", NULL, "Nikon\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
1003: { tag_table_VND_NIKON_990, "NIKON", NULL, NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
1004: { tag_table_VND_OLYMPUS, "OLYMPUS OPTICAL CO.,LTD", NULL, "OLYMP\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
1005: };
1006: /* }}} */
1007:
1008: /* {{{ exif_get_tagname
1009: Get headername for tag_num or NULL if not defined */
1010: static char * exif_get_tagname(int tag_num, char *ret, int len, tag_table_type tag_table TSRMLS_DC)
1011: {
1012: int i, t;
1013: char tmp[32];
1014:
1015: for (i = 0; (t = tag_table[i].Tag) != TAG_END_OF_LIST; i++) {
1016: if (t == tag_num) {
1017: if (ret && len) {
1018: strlcpy(ret, tag_table[i].Desc, abs(len));
1019: if (len < 0) {
1020: memset(ret + strlen(ret), ' ', -len - strlen(ret) - 1);
1021: ret[-len - 1] = '\0';
1022: }
1023: return ret;
1024: }
1025: return tag_table[i].Desc;
1026: }
1027: }
1028:
1029: if (ret && len) {
1030: snprintf(tmp, sizeof(tmp), "UndefinedTag:0x%04X", tag_num);
1031: strlcpy(ret, tmp, abs(len));
1032: if (len < 0) {
1033: memset(ret + strlen(ret), ' ', -len - strlen(ret) - 1);
1034: ret[-len - 1] = '\0';
1035: }
1036: return ret;
1037: }
1038: return "";
1039: }
1040: /* }}} */
1041:
1042: /* {{{ exif_char_dump
1043: * Do not use! This is a debug function... */
1044: #ifdef EXIF_DEBUG
1045: static unsigned char* exif_char_dump(unsigned char * addr, int len, int offset)
1046: {
1047: static unsigned char buf[4096+1];
1048: static unsigned char tmp[20];
1049: int c, i, p=0, n = 5+31;
1050:
1051: p += slprintf(buf+p, sizeof(buf)-p, "\nDump Len: %08X (%d)", len, len);
1052: if (len) {
1053: for(i=0; i<len+15 && p+n<=sizeof(buf); i++) {
1054: if (i%16==0) {
1055: p += slprintf(buf+p, sizeof(buf)-p, "\n%08X: ", i+offset);
1056: }
1057: if (i<len) {
1058: c = *addr++;
1059: p += slprintf(buf+p, sizeof(buf)-p, "%02X ", c);
1060: tmp[i%16] = c>=32 ? c : '.';
1061: tmp[(i%16)+1] = '\0';
1062: } else {
1063: p += slprintf(buf+p, sizeof(buf)-p, " ");
1064: }
1065: if (i%16==15) {
1066: p += slprintf(buf+p, sizeof(buf)-p, " %s", tmp);
1067: if (i>=len) {
1068: break;
1069: }
1070: }
1071: }
1072: }
1073: buf[sizeof(buf)-1] = '\0';
1074: return buf;
1075: }
1076: #endif
1077: /* }}} */
1078:
1079: /* {{{ php_jpg_get16
1080: Get 16 bits motorola order (always) for jpeg header stuff.
1081: */
1082: static int php_jpg_get16(void *value)
1083: {
1084: return (((uchar *)value)[0] << 8) | ((uchar *)value)[1];
1085: }
1086: /* }}} */
1087:
1088: /* {{{ php_ifd_get16u
1089: * Convert a 16 bit unsigned value from file's native byte order */
1090: static int php_ifd_get16u(void *value, int motorola_intel)
1091: {
1092: if (motorola_intel) {
1093: return (((uchar *)value)[0] << 8) | ((uchar *)value)[1];
1094: } else {
1095: return (((uchar *)value)[1] << 8) | ((uchar *)value)[0];
1096: }
1097: }
1098: /* }}} */
1099:
1100: /* {{{ php_ifd_get16s
1101: * Convert a 16 bit signed value from file's native byte order */
1102: static signed short php_ifd_get16s(void *value, int motorola_intel)
1103: {
1104: return (signed short)php_ifd_get16u(value, motorola_intel);
1105: }
1106: /* }}} */
1107:
1108: /* {{{ php_ifd_get32s
1109: * Convert a 32 bit signed value from file's native byte order */
1110: static int php_ifd_get32s(void *value, int motorola_intel)
1111: {
1112: if (motorola_intel) {
1113: return (((char *)value)[0] << 24)
1114: | (((uchar *)value)[1] << 16)
1115: | (((uchar *)value)[2] << 8 )
1116: | (((uchar *)value)[3] );
1117: } else {
1118: return (((char *)value)[3] << 24)
1119: | (((uchar *)value)[2] << 16)
1120: | (((uchar *)value)[1] << 8 )
1121: | (((uchar *)value)[0] );
1122: }
1123: }
1124: /* }}} */
1125:
1126: /* {{{ php_ifd_get32u
1127: * Write 32 bit unsigned value to data */
1128: static unsigned php_ifd_get32u(void *value, int motorola_intel)
1129: {
1130: return (unsigned)php_ifd_get32s(value, motorola_intel) & 0xffffffff;
1131: }
1132: /* }}} */
1133:
1134: /* {{{ php_ifd_set16u
1135: * Write 16 bit unsigned value to data */
1136: static void php_ifd_set16u(char *data, unsigned int value, int motorola_intel)
1137: {
1138: if (motorola_intel) {
1139: data[0] = (value & 0xFF00) >> 8;
1140: data[1] = (value & 0x00FF);
1141: } else {
1142: data[1] = (value & 0xFF00) >> 8;
1143: data[0] = (value & 0x00FF);
1144: }
1145: }
1146: /* }}} */
1147:
1148: /* {{{ php_ifd_set32u
1149: * Convert a 32 bit unsigned value from file's native byte order */
1150: static void php_ifd_set32u(char *data, size_t value, int motorola_intel)
1151: {
1152: if (motorola_intel) {
1153: data[0] = (value & 0xFF000000) >> 24;
1154: data[1] = (value & 0x00FF0000) >> 16;
1155: data[2] = (value & 0x0000FF00) >> 8;
1156: data[3] = (value & 0x000000FF);
1157: } else {
1158: data[3] = (value & 0xFF000000) >> 24;
1159: data[2] = (value & 0x00FF0000) >> 16;
1160: data[1] = (value & 0x0000FF00) >> 8;
1161: data[0] = (value & 0x000000FF);
1162: }
1163: }
1164: /* }}} */
1165:
1166: #ifdef EXIF_DEBUG
1167: char * exif_dump_data(int *dump_free, int format, int components, int length, int motorola_intel, char *value_ptr TSRMLS_DC) /* {{{ */
1168: {
1169: char *dump;
1170: int len;
1171:
1172: *dump_free = 0;
1173: if (format == TAG_FMT_STRING) {
1174: return value_ptr ? value_ptr : "<no data>";
1175: }
1176: if (format == TAG_FMT_UNDEFINED) {
1177: return "<undefined>\n";
1178: }
1179: if (format == TAG_FMT_IFD) {
1180: return "";
1181: }
1182: if (format == TAG_FMT_SINGLE || format == TAG_FMT_DOUBLE) {
1183: return "<not implemented>";
1184: }
1185: *dump_free = 1;
1186: if (components > 1) {
1187: len = spprintf(&dump, 0, "(%d,%d) {", components, length);
1188: } else {
1189: len = spprintf(&dump, 0, "{");
1190: }
1191: while(components > 0) {
1192: switch(format) {
1193: case TAG_FMT_BYTE:
1194: case TAG_FMT_UNDEFINED:
1195: case TAG_FMT_STRING:
1196: case TAG_FMT_SBYTE:
1197: dump = erealloc(dump, len + 4 + 1);
1198: snprintf(dump + len, 4 + 1, "0x%02X", *value_ptr);
1199: len += 4;
1200: value_ptr++;
1201: break;
1202: case TAG_FMT_USHORT:
1203: case TAG_FMT_SSHORT:
1204: dump = erealloc(dump, len + 6 + 1);
1205: snprintf(dump + len, 6 + 1, "0x%04X", php_ifd_get16s(value_ptr, motorola_intel));
1206: len += 6;
1207: value_ptr += 2;
1208: break;
1209: case TAG_FMT_ULONG:
1210: case TAG_FMT_SLONG:
1211: dump = erealloc(dump, len + 6 + 1);
1212: snprintf(dump + len, 6 + 1, "0x%04X", php_ifd_get32s(value_ptr, motorola_intel));
1213: len += 6;
1214: value_ptr += 4;
1215: break;
1216: case TAG_FMT_URATIONAL:
1217: case TAG_FMT_SRATIONAL:
1218: dump = erealloc(dump, len + 13 + 1);
1219: snprintf(dump + len, 13 + 1, "0x%04X/0x%04X", php_ifd_get32s(value_ptr, motorola_intel), php_ifd_get32s(value_ptr+4, motorola_intel));
1220: len += 13;
1221: value_ptr += 8;
1222: break;
1223: }
1224: if (components > 0) {
1225: dump = erealloc(dump, len + 2 + 1);
1226: snprintf(dump + len, 2 + 1, ", ");
1227: len += 2;
1228: components--;
1229: } else{
1230: break;
1231: }
1232: }
1233: dump = erealloc(dump, len + 1 + 1);
1234: snprintf(dump + len, 1 + 1, "}");
1235: return dump;
1236: }
1237: /* }}} */
1238: #endif
1239:
1240: /* {{{ exif_convert_any_format
1241: * Evaluate number, be it int, rational, or float from directory. */
1242: static double exif_convert_any_format(void *value, int format, int motorola_intel TSRMLS_DC)
1243: {
1244: int s_den;
1245: unsigned u_den;
1246:
1247: switch(format) {
1248: case TAG_FMT_SBYTE: return *(signed char *)value;
1249: case TAG_FMT_BYTE: return *(uchar *)value;
1250:
1251: case TAG_FMT_USHORT: return php_ifd_get16u(value, motorola_intel);
1252: case TAG_FMT_ULONG: return php_ifd_get32u(value, motorola_intel);
1253:
1254: case TAG_FMT_URATIONAL:
1255: u_den = php_ifd_get32u(4+(char *)value, motorola_intel);
1256: if (u_den == 0) {
1257: return 0;
1258: } else {
1259: return (double)php_ifd_get32u(value, motorola_intel) / u_den;
1260: }
1261:
1262: case TAG_FMT_SRATIONAL:
1263: s_den = php_ifd_get32s(4+(char *)value, motorola_intel);
1264: if (s_den == 0) {
1265: return 0;
1266: } else {
1267: return (double)php_ifd_get32s(value, motorola_intel) / s_den;
1268: }
1269:
1270: case TAG_FMT_SSHORT: return (signed short)php_ifd_get16u(value, motorola_intel);
1271: case TAG_FMT_SLONG: return php_ifd_get32s(value, motorola_intel);
1272:
1273: /* Not sure if this is correct (never seen float used in Exif format) */
1274: case TAG_FMT_SINGLE:
1275: #ifdef EXIF_DEBUG
1276: php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Found value of type single");
1277: #endif
1278: return (double)*(float *)value;
1279: case TAG_FMT_DOUBLE:
1280: #ifdef EXIF_DEBUG
1281: php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Found value of type double");
1282: #endif
1283: return *(double *)value;
1284: }
1285: return 0;
1286: }
1287: /* }}} */
1288:
1289: /* {{{ exif_convert_any_to_int
1290: * Evaluate number, be it int, rational, or float from directory. */
1291: static size_t exif_convert_any_to_int(void *value, int format, int motorola_intel TSRMLS_DC)
1292: {
1293: int s_den;
1294: unsigned u_den;
1295:
1296: switch(format) {
1297: case TAG_FMT_SBYTE: return *(signed char *)value;
1298: case TAG_FMT_BYTE: return *(uchar *)value;
1299:
1300: case TAG_FMT_USHORT: return php_ifd_get16u(value, motorola_intel);
1301: case TAG_FMT_ULONG: return php_ifd_get32u(value, motorola_intel);
1302:
1303: case TAG_FMT_URATIONAL:
1304: u_den = php_ifd_get32u(4+(char *)value, motorola_intel);
1305: if (u_den == 0) {
1306: return 0;
1307: } else {
1308: return php_ifd_get32u(value, motorola_intel) / u_den;
1309: }
1310:
1311: case TAG_FMT_SRATIONAL:
1312: s_den = php_ifd_get32s(4+(char *)value, motorola_intel);
1313: if (s_den == 0) {
1314: return 0;
1315: } else {
1316: return php_ifd_get32s(value, motorola_intel) / s_den;
1317: }
1318:
1319: case TAG_FMT_SSHORT: return php_ifd_get16u(value, motorola_intel);
1320: case TAG_FMT_SLONG: return php_ifd_get32s(value, motorola_intel);
1321:
1322: /* Not sure if this is correct (never seen float used in Exif format) */
1323: case TAG_FMT_SINGLE:
1324: #ifdef EXIF_DEBUG
1325: php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Found value of type single");
1326: #endif
1327: return (size_t)*(float *)value;
1328: case TAG_FMT_DOUBLE:
1329: #ifdef EXIF_DEBUG
1330: php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Found value of type double");
1331: #endif
1332: return (size_t)*(double *)value;
1333: }
1334: return 0;
1335: }
1336: /* }}} */
1337:
1338: /* {{{ struct image_info_value, image_info_list
1339: */
1340: #ifndef WORD
1341: #define WORD unsigned short
1342: #endif
1343: #ifndef DWORD
1344: #define DWORD unsigned int
1345: #endif
1346:
1347: typedef struct {
1348: int num;
1349: int den;
1350: } signed_rational;
1351:
1352: typedef struct {
1353: unsigned int num;
1354: unsigned int den;
1355: } unsigned_rational;
1356:
1357: typedef union _image_info_value {
1358: char *s;
1359: unsigned u;
1360: int i;
1361: float f;
1362: double d;
1363: signed_rational sr;
1364: unsigned_rational ur;
1365: union _image_info_value *list;
1366: } image_info_value;
1367:
1368: typedef struct {
1369: WORD tag;
1370: WORD format;
1371: DWORD length;
1372: DWORD dummy; /* value ptr of tiff directory entry */
1373: char *name;
1374: image_info_value value;
1375: } image_info_data;
1376:
1377: typedef struct {
1378: int count;
1379: image_info_data *list;
1380: } image_info_list;
1381: /* }}} */
1382:
1383: /* {{{ exif_get_sectionname
1384: Returns the name of a section
1385: */
1386: #define SECTION_FILE 0
1387: #define SECTION_COMPUTED 1
1388: #define SECTION_ANY_TAG 2
1389: #define SECTION_IFD0 3
1390: #define SECTION_THUMBNAIL 4
1391: #define SECTION_COMMENT 5
1392: #define SECTION_APP0 6
1393: #define SECTION_EXIF 7
1394: #define SECTION_FPIX 8
1395: #define SECTION_GPS 9
1396: #define SECTION_INTEROP 10
1397: #define SECTION_APP12 11
1398: #define SECTION_WINXP 12
1399: #define SECTION_MAKERNOTE 13
1400: #define SECTION_COUNT 14
1401:
1402: #define FOUND_FILE (1<<SECTION_FILE)
1403: #define FOUND_COMPUTED (1<<SECTION_COMPUTED)
1404: #define FOUND_ANY_TAG (1<<SECTION_ANY_TAG)
1405: #define FOUND_IFD0 (1<<SECTION_IFD0)
1406: #define FOUND_THUMBNAIL (1<<SECTION_THUMBNAIL)
1407: #define FOUND_COMMENT (1<<SECTION_COMMENT)
1408: #define FOUND_APP0 (1<<SECTION_APP0)
1409: #define FOUND_EXIF (1<<SECTION_EXIF)
1410: #define FOUND_FPIX (1<<SECTION_FPIX)
1411: #define FOUND_GPS (1<<SECTION_GPS)
1412: #define FOUND_INTEROP (1<<SECTION_INTEROP)
1413: #define FOUND_APP12 (1<<SECTION_APP12)
1414: #define FOUND_WINXP (1<<SECTION_WINXP)
1415: #define FOUND_MAKERNOTE (1<<SECTION_MAKERNOTE)
1416:
1417: static char *exif_get_sectionname(int section)
1418: {
1419: switch(section) {
1420: case SECTION_FILE: return "FILE";
1421: case SECTION_COMPUTED: return "COMPUTED";
1422: case SECTION_ANY_TAG: return "ANY_TAG";
1423: case SECTION_IFD0: return "IFD0";
1424: case SECTION_THUMBNAIL: return "THUMBNAIL";
1425: case SECTION_COMMENT: return "COMMENT";
1426: case SECTION_APP0: return "APP0";
1427: case SECTION_EXIF: return "EXIF";
1428: case SECTION_FPIX: return "FPIX";
1429: case SECTION_GPS: return "GPS";
1430: case SECTION_INTEROP: return "INTEROP";
1431: case SECTION_APP12: return "APP12";
1432: case SECTION_WINXP: return "WINXP";
1433: case SECTION_MAKERNOTE: return "MAKERNOTE";
1434: }
1435: return "";
1436: }
1437:
1438: static tag_table_type exif_get_tag_table(int section)
1439: {
1440: switch(section) {
1441: case SECTION_FILE: return &tag_table_IFD[0];
1442: case SECTION_COMPUTED: return &tag_table_IFD[0];
1443: case SECTION_ANY_TAG: return &tag_table_IFD[0];
1444: case SECTION_IFD0: return &tag_table_IFD[0];
1445: case SECTION_THUMBNAIL: return &tag_table_IFD[0];
1446: case SECTION_COMMENT: return &tag_table_IFD[0];
1447: case SECTION_APP0: return &tag_table_IFD[0];
1448: case SECTION_EXIF: return &tag_table_IFD[0];
1449: case SECTION_FPIX: return &tag_table_IFD[0];
1450: case SECTION_GPS: return &tag_table_GPS[0];
1451: case SECTION_INTEROP: return &tag_table_IOP[0];
1452: case SECTION_APP12: return &tag_table_IFD[0];
1453: case SECTION_WINXP: return &tag_table_IFD[0];
1454: }
1455: return &tag_table_IFD[0];
1456: }
1457: /* }}} */
1458:
1459: /* {{{ exif_get_sectionlist
1460: Return list of sectionnames specified by sectionlist. Return value must be freed
1461: */
1462: static char *exif_get_sectionlist(int sectionlist TSRMLS_DC)
1463: {
1464: int i, len, ml = 0;
1465: char *sections;
1466:
1467: for(i=0; i<SECTION_COUNT; i++) {
1468: ml += strlen(exif_get_sectionname(i))+2;
1469: }
1470: sections = safe_emalloc(ml, 1, 1);
1471: sections[0] = '\0';
1472: len = 0;
1473: for(i=0; i<SECTION_COUNT; i++) {
1474: if (sectionlist&(1<<i)) {
1475: snprintf(sections+len, ml-len, "%s, ", exif_get_sectionname(i));
1476: len = strlen(sections);
1477: }
1478: }
1479: if (len>2)
1480: sections[len-2] = '\0';
1481: return sections;
1482: }
1483: /* }}} */
1484:
1485: /* {{{ struct image_info_type
1486: This structure stores Exif header image elements in a simple manner
1487: Used to store camera data as extracted from the various ways that it can be
1488: stored in a nexif header
1489: */
1490:
1491: typedef struct {
1492: int type;
1493: size_t size;
1494: uchar *data;
1495: } file_section;
1496:
1497: typedef struct {
1498: int count;
1499: file_section *list;
1500: } file_section_list;
1501:
1502: typedef struct {
1503: image_filetype filetype;
1504: size_t width, height;
1505: size_t size;
1506: size_t offset;
1507: char *data;
1508: } thumbnail_data;
1509:
1510: typedef struct {
1511: char *value;
1512: size_t size;
1513: int tag;
1514: } xp_field_type;
1515:
1516: typedef struct {
1517: int count;
1518: xp_field_type *list;
1519: } xp_field_list;
1520:
1521: /* This structure is used to store a section of a Jpeg file. */
1522: typedef struct {
1523: php_stream *infile;
1524: char *FileName;
1525: time_t FileDateTime;
1526: size_t FileSize;
1527: image_filetype FileType;
1528: int Height, Width;
1529: int IsColor;
1530:
1531: char *make;
1532: char *model;
1533:
1534: float ApertureFNumber;
1535: float ExposureTime;
1536: double FocalplaneUnits;
1537: float CCDWidth;
1538: double FocalplaneXRes;
1539: size_t ExifImageWidth;
1540: float FocalLength;
1541: float Distance;
1542:
1543: int motorola_intel; /* 1 Motorola; 0 Intel */
1544:
1545: char *UserComment;
1546: int UserCommentLength;
1547: char *UserCommentEncoding;
1548: char *encode_unicode;
1549: char *decode_unicode_be;
1550: char *decode_unicode_le;
1551: char *encode_jis;
1552: char *decode_jis_be;
1553: char *decode_jis_le;
1554: char *Copyright;/* EXIF standard defines Copyright as "<Photographer> [ '\0' <Editor> ] ['\0']" */
1555: char *CopyrightPhotographer;
1556: char *CopyrightEditor;
1557:
1558: xp_field_list xp_fields;
1559:
1560: thumbnail_data Thumbnail;
1561: /* other */
1562: int sections_found; /* FOUND_<marker> */
1563: image_info_list info_list[SECTION_COUNT];
1564: /* for parsing */
1565: int read_thumbnail;
1566: int read_all;
1567: int ifd_nesting_level;
1568: /* internal */
1569: file_section_list file;
1570: } image_info_type;
1571: /* }}} */
1572:
1573: /* {{{ exif_error_docref */
1574: static void exif_error_docref(const char *docref EXIFERR_DC, const image_info_type *ImageInfo, int type, const char *format, ...)
1575: {
1576: va_list args;
1577:
1578: va_start(args, format);
1579: #ifdef EXIF_DEBUG
1580: {
1581: char *buf;
1582:
1583: spprintf(&buf, 0, "%s(%d): %s", _file, _line, format);
1584: php_verror(docref, ImageInfo->FileName?ImageInfo->FileName:"", type, buf, args TSRMLS_CC);
1585: efree(buf);
1586: }
1587: #else
1588: php_verror(docref, ImageInfo->FileName?ImageInfo->FileName:"", type, format, args TSRMLS_CC);
1589: #endif
1590: va_end(args);
1591: }
1592: /* }}} */
1593:
1594: /* {{{ jpeg_sof_info
1595: */
1596: typedef struct {
1597: int bits_per_sample;
1598: size_t width;
1599: size_t height;
1600: int num_components;
1601: } jpeg_sof_info;
1602: /* }}} */
1603:
1604: /* {{{ exif_file_sections_add
1605: Add a file_section to image_info
1606: returns the used block or -1. if size>0 and data == NULL buffer of size is allocated
1607: */
1608: static int exif_file_sections_add(image_info_type *ImageInfo, int type, size_t size, uchar *data)
1609: {
1610: file_section *tmp;
1611: int count = ImageInfo->file.count;
1612:
1613: tmp = safe_erealloc(ImageInfo->file.list, (count+1), sizeof(file_section), 0);
1614: ImageInfo->file.list = tmp;
1615: ImageInfo->file.list[count].type = 0xFFFF;
1616: ImageInfo->file.list[count].data = NULL;
1617: ImageInfo->file.list[count].size = 0;
1618: ImageInfo->file.count = count+1;
1619: if (!size) {
1620: data = NULL;
1621: } else if (data == NULL) {
1622: data = safe_emalloc(size, 1, 0);
1623: }
1624: ImageInfo->file.list[count].type = type;
1625: ImageInfo->file.list[count].data = data;
1626: ImageInfo->file.list[count].size = size;
1627: return count;
1628: }
1629: /* }}} */
1630:
1631: /* {{{ exif_file_sections_realloc
1632: Reallocate a file section returns 0 on success and -1 on failure
1633: */
1634: static int exif_file_sections_realloc(image_info_type *ImageInfo, int section_index, size_t size TSRMLS_DC)
1635: {
1636: void *tmp;
1637:
1638: /* This is not a malloc/realloc check. It is a plausibility check for the
1639: * function parameters (requirements engineering).
1640: */
1641: if (section_index >= ImageInfo->file.count) {
1642: EXIF_ERRLOG_FSREALLOC(ImageInfo)
1643: return -1;
1644: }
1645: tmp = safe_erealloc(ImageInfo->file.list[section_index].data, 1, size, 0);
1646: ImageInfo->file.list[section_index].data = tmp;
1647: ImageInfo->file.list[section_index].size = size;
1648: return 0;
1649: }
1650: /* }}} */
1651:
1652: /* {{{ exif_file_section_free
1653: Discard all file_sections in ImageInfo
1654: */
1655: static int exif_file_sections_free(image_info_type *ImageInfo)
1656: {
1657: int i;
1658:
1659: if (ImageInfo->file.count) {
1660: for (i=0; i<ImageInfo->file.count; i++) {
1661: EFREE_IF(ImageInfo->file.list[i].data);
1662: }
1663: }
1664: EFREE_IF(ImageInfo->file.list);
1665: ImageInfo->file.count = 0;
1666: return TRUE;
1667: }
1668: /* }}} */
1669:
1670: /* {{{ exif_iif_add_value
1671: Add a value to image_info
1672: */
1673: static void exif_iif_add_value(image_info_type *image_info, int section_index, char *name, int tag, int format, int length, void* value, int motorola_intel TSRMLS_DC)
1674: {
1675: size_t idex;
1676: void *vptr;
1677: image_info_value *info_value;
1678: image_info_data *info_data;
1679: image_info_data *list;
1680:
1681: if (length < 0) {
1682: return;
1683: }
1684:
1685: list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
1686: image_info->info_list[section_index].list = list;
1687:
1688: info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
1689: memset(info_data, 0, sizeof(image_info_data));
1690: info_data->tag = tag;
1691: info_data->format = format;
1692: info_data->length = length;
1693: info_data->name = estrdup(name);
1694: info_value = &info_data->value;
1695:
1696: switch (format) {
1697: case TAG_FMT_STRING:
1698: if (value) {
1699: length = php_strnlen(value, length);
1700: if (PG(magic_quotes_runtime)) {
1701: info_value->s = php_addslashes(value, length, &length, 0 TSRMLS_CC);
1702: } else {
1703: info_value->s = estrndup(value, length);
1704: }
1705: info_data->length = length;
1706: } else {
1707: info_data->length = 0;
1708: info_value->s = estrdup("");
1709: }
1710: break;
1711:
1712: default:
1713: /* Standard says more types possible but skip them...
1714: * but allow users to handle data if they know how to
1715: * So not return but use type UNDEFINED
1716: * return;
1717: */
1718: info_data->tag = TAG_FMT_UNDEFINED;/* otherwise not freed from memory */
1719: case TAG_FMT_SBYTE:
1720: case TAG_FMT_BYTE:
1721: /* in contrast to strings bytes do not need to allocate buffer for NULL if length==0 */
1722: if (!length)
1723: break;
1724: case TAG_FMT_UNDEFINED:
1725: if (value) {
1726: /* do not recompute length here */
1727: if (PG(magic_quotes_runtime)) {
1728: info_value->s = php_addslashes(value, length, &length, 0 TSRMLS_CC);
1729: } else {
1730: info_value->s = estrndup(value, length);
1731: }
1732: info_data->length = length;
1733: } else {
1734: info_data->length = 0;
1735: info_value->s = estrdup("");
1736: }
1737: break;
1738:
1739: case TAG_FMT_USHORT:
1740: case TAG_FMT_ULONG:
1741: case TAG_FMT_URATIONAL:
1742: case TAG_FMT_SSHORT:
1743: case TAG_FMT_SLONG:
1744: case TAG_FMT_SRATIONAL:
1745: case TAG_FMT_SINGLE:
1746: case TAG_FMT_DOUBLE:
1747: if (length==0) {
1748: break;
1749: } else
1750: if (length>1) {
1751: info_value->list = safe_emalloc(length, sizeof(image_info_value), 0);
1752: } else {
1753: info_value = &info_data->value;
1754: }
1755: for (idex=0,vptr=value; idex<(size_t)length; idex++,vptr=(char *) vptr + php_tiff_bytes_per_format[format]) {
1756: if (length>1) {
1757: info_value = &info_data->value.list[idex];
1758: }
1759: switch (format) {
1760: case TAG_FMT_USHORT:
1761: info_value->u = php_ifd_get16u(vptr, motorola_intel);
1762: break;
1763:
1764: case TAG_FMT_ULONG:
1765: info_value->u = php_ifd_get32u(vptr, motorola_intel);
1766: break;
1767:
1768: case TAG_FMT_URATIONAL:
1769: info_value->ur.num = php_ifd_get32u(vptr, motorola_intel);
1770: info_value->ur.den = php_ifd_get32u(4+(char *)vptr, motorola_intel);
1771: break;
1772:
1773: case TAG_FMT_SSHORT:
1774: info_value->i = php_ifd_get16s(vptr, motorola_intel);
1775: break;
1776:
1777: case TAG_FMT_SLONG:
1778: info_value->i = php_ifd_get32s(vptr, motorola_intel);
1779: break;
1780:
1781: case TAG_FMT_SRATIONAL:
1782: info_value->sr.num = php_ifd_get32u(vptr, motorola_intel);
1783: info_value->sr.den = php_ifd_get32u(4+(char *)vptr, motorola_intel);
1784: break;
1785:
1786: case TAG_FMT_SINGLE:
1787: #ifdef EXIF_DEBUG
1788: php_error_docref(NULL TSRMLS_CC, E_WARNING, "Found value of type single");
1789: #endif
1790: info_value->f = *(float *)value;
1791:
1792: case TAG_FMT_DOUBLE:
1793: #ifdef EXIF_DEBUG
1794: php_error_docref(NULL TSRMLS_CC, E_WARNING, "Found value of type double");
1795: #endif
1796: info_value->d = *(double *)value;
1797: break;
1798: }
1799: }
1800: }
1801: image_info->sections_found |= 1<<section_index;
1802: image_info->info_list[section_index].count++;
1803: }
1804: /* }}} */
1805:
1806: /* {{{ exif_iif_add_tag
1807: Add a tag from IFD to image_info
1808: */
1809: static void exif_iif_add_tag(image_info_type *image_info, int section_index, char *name, int tag, int format, size_t length, void* value TSRMLS_DC)
1810: {
1811: exif_iif_add_value(image_info, section_index, name, tag, format, (int)length, value, image_info->motorola_intel TSRMLS_CC);
1812: }
1813: /* }}} */
1814:
1815: /* {{{ exif_iif_add_int
1816: Add an int value to image_info
1817: */
1818: static void exif_iif_add_int(image_info_type *image_info, int section_index, char *name, int value TSRMLS_DC)
1819: {
1820: image_info_data *info_data;
1821: image_info_data *list;
1822:
1823: list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
1824: image_info->info_list[section_index].list = list;
1825:
1826: info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
1827: info_data->tag = TAG_NONE;
1828: info_data->format = TAG_FMT_SLONG;
1829: info_data->length = 1;
1830: info_data->name = estrdup(name);
1831: info_data->value.i = value;
1832: image_info->sections_found |= 1<<section_index;
1833: image_info->info_list[section_index].count++;
1834: }
1835: /* }}} */
1836:
1837: /* {{{ exif_iif_add_str
1838: Add a string value to image_info MUST BE NUL TERMINATED
1839: */
1840: static void exif_iif_add_str(image_info_type *image_info, int section_index, char *name, char *value TSRMLS_DC)
1841: {
1842: image_info_data *info_data;
1843: image_info_data *list;
1844:
1845: if (value) {
1846: list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
1847: image_info->info_list[section_index].list = list;
1848: info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
1849: info_data->tag = TAG_NONE;
1850: info_data->format = TAG_FMT_STRING;
1851: info_data->length = 1;
1852: info_data->name = estrdup(name);
1853: if (PG(magic_quotes_runtime)) {
1854: info_data->value.s = php_addslashes(value, strlen(value), NULL, 0 TSRMLS_CC);
1855: } else {
1856: info_data->value.s = estrdup(value);
1857: }
1858: image_info->sections_found |= 1<<section_index;
1859: image_info->info_list[section_index].count++;
1860: }
1861: }
1862: /* }}} */
1863:
1864: /* {{{ exif_iif_add_fmt
1865: Add a format string value to image_info MUST BE NUL TERMINATED
1866: */
1867: static void exif_iif_add_fmt(image_info_type *image_info, int section_index, char *name TSRMLS_DC, char *value, ...)
1868: {
1869: char *tmp;
1870: va_list arglist;
1871:
1872: va_start(arglist, value);
1873: if (value) {
1874: vspprintf(&tmp, 0, value, arglist);
1875: exif_iif_add_str(image_info, section_index, name, tmp TSRMLS_CC);
1876: efree(tmp);
1877: }
1878: va_end(arglist);
1879: }
1880: /* }}} */
1881:
1882: /* {{{ exif_iif_add_str
1883: Add a string value to image_info MUST BE NUL TERMINATED
1884: */
1885: static void exif_iif_add_buffer(image_info_type *image_info, int section_index, char *name, int length, char *value TSRMLS_DC)
1886: {
1887: image_info_data *info_data;
1888: image_info_data *list;
1889:
1890: if (value) {
1891: list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
1892: image_info->info_list[section_index].list = list;
1893: info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
1894: info_data->tag = TAG_NONE;
1895: info_data->format = TAG_FMT_UNDEFINED;
1896: info_data->length = length;
1897: info_data->name = estrdup(name);
1898: if (PG(magic_quotes_runtime)) {
1899: #ifdef EXIF_DEBUG
1900: exif_error_docref(NULL EXIFERR_CC, image_info, E_NOTICE, "Adding %s as buffer%s", name, exif_char_dump(value, length, 0));
1901: #endif
1902: info_data->value.s = php_addslashes(value, length, &length, 0 TSRMLS_CC);
1903: info_data->length = length;
1904: } else {
1905: info_data->value.s = safe_emalloc(length, 1, 1);
1906: memcpy(info_data->value.s, value, length);
1907: info_data->value.s[length] = 0;
1908: }
1909: image_info->sections_found |= 1<<section_index;
1910: image_info->info_list[section_index].count++;
1911: }
1912: }
1913: /* }}} */
1914:
1915: /* {{{ exif_iif_free
1916: Free memory allocated for image_info
1917: */
1918: static void exif_iif_free(image_info_type *image_info, int section_index) {
1919: int i;
1920: void *f; /* faster */
1921:
1922: if (image_info->info_list[section_index].count) {
1923: for (i=0; i < image_info->info_list[section_index].count; i++) {
1924: if ((f=image_info->info_list[section_index].list[i].name) != NULL) {
1925: efree(f);
1926: }
1927: switch(image_info->info_list[section_index].list[i].format) {
1928: case TAG_FMT_SBYTE:
1929: case TAG_FMT_BYTE:
1930: /* in contrast to strings bytes do not need to allocate buffer for NULL if length==0 */
1931: if (image_info->info_list[section_index].list[i].length<1)
1932: break;
1933: default:
1934: case TAG_FMT_UNDEFINED:
1935: case TAG_FMT_STRING:
1936: if ((f=image_info->info_list[section_index].list[i].value.s) != NULL) {
1937: efree(f);
1938: }
1939: break;
1940:
1941: case TAG_FMT_USHORT:
1942: case TAG_FMT_ULONG:
1943: case TAG_FMT_URATIONAL:
1944: case TAG_FMT_SSHORT:
1945: case TAG_FMT_SLONG:
1946: case TAG_FMT_SRATIONAL:
1947: case TAG_FMT_SINGLE:
1948: case TAG_FMT_DOUBLE:
1949: /* nothing to do here */
1950: if (image_info->info_list[section_index].list[i].length > 1) {
1951: if ((f=image_info->info_list[section_index].list[i].value.list) != NULL) {
1952: efree(f);
1953: }
1954: }
1955: break;
1956: }
1957: }
1958: }
1959: EFREE_IF(image_info->info_list[section_index].list);
1960: }
1961: /* }}} */
1962:
1963: /* {{{ add_assoc_image_info
1964: * Add image_info to associative array value. */
1965: static void add_assoc_image_info(zval *value, int sub_array, image_info_type *image_info, int section_index TSRMLS_DC)
1966: {
1967: char buffer[64], *val, *name, uname[64];
1968: int i, ap, l, b, idx=0, unknown=0;
1969: #ifdef EXIF_DEBUG
1970: int info_tag;
1971: #endif
1972: image_info_value *info_value;
1973: image_info_data *info_data;
1974: zval *tmpi, *array = NULL;
1975:
1976: #ifdef EXIF_DEBUG
1977: /* php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Adding %d infos from section %s", image_info->info_list[section_index].count, exif_get_sectionname(section_index));*/
1978: #endif
1979: if (image_info->info_list[section_index].count) {
1980: if (sub_array) {
1981: MAKE_STD_ZVAL(tmpi);
1982: array_init(tmpi);
1983: } else {
1984: tmpi = value;
1985: }
1986:
1987: for(i=0; i<image_info->info_list[section_index].count; i++) {
1988: info_data = &image_info->info_list[section_index].list[i];
1989: #ifdef EXIF_DEBUG
1990: info_tag = info_data->tag; /* conversion */
1991: #endif
1992: info_value = &info_data->value;
1993: if (!(name = info_data->name)) {
1994: snprintf(uname, sizeof(uname), "%d", unknown++);
1995: name = uname;
1996: }
1997: #ifdef EXIF_DEBUG
1998: /* php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Adding infos: tag(0x%04X,%12s,L=0x%04X): %s", info_tag, exif_get_tagname(info_tag, buffer, -12, exif_get_tag_table(section_index) TSRMLS_CC), info_data->length, info_data->format==TAG_FMT_STRING?(info_value&&info_value->s?info_value->s:"<no data>"):exif_get_tagformat(info_data->format));*/
1999: #endif
2000: if (info_data->length==0) {
2001: add_assoc_null(tmpi, name);
2002: } else {
2003: switch (info_data->format) {
2004: default:
2005: /* Standard says more types possible but skip them...
2006: * but allow users to handle data if they know how to
2007: * So not return but use type UNDEFINED
2008: * return;
2009: */
2010: case TAG_FMT_BYTE:
2011: case TAG_FMT_SBYTE:
2012: case TAG_FMT_UNDEFINED:
2013: if (!info_value->s) {
2014: add_assoc_stringl(tmpi, name, "", 0, 1);
2015: } else {
2016: add_assoc_stringl(tmpi, name, info_value->s, info_data->length, 1);
2017: }
2018: break;
2019:
2020: case TAG_FMT_STRING:
2021: if (!(val = info_value->s)) {
2022: val = "";
2023: }
2024: if (section_index==SECTION_COMMENT) {
2025: add_index_string(tmpi, idx++, val, 1);
2026: } else {
2027: add_assoc_string(tmpi, name, val, 1);
2028: }
2029: break;
2030:
2031: case TAG_FMT_URATIONAL:
2032: case TAG_FMT_SRATIONAL:
2033: /*case TAG_FMT_BYTE:
2034: case TAG_FMT_SBYTE:*/
2035: case TAG_FMT_USHORT:
2036: case TAG_FMT_SSHORT:
2037: case TAG_FMT_SINGLE:
2038: case TAG_FMT_DOUBLE:
2039: case TAG_FMT_ULONG:
2040: case TAG_FMT_SLONG:
2041: /* now the rest, first see if it becomes an array */
2042: if ((l = info_data->length) > 1) {
2043: array = NULL;
2044: MAKE_STD_ZVAL(array);
2045: array_init(array);
2046: }
2047: for(ap=0; ap<l; ap++) {
2048: if (l>1) {
2049: info_value = &info_data->value.list[ap];
2050: }
2051: switch (info_data->format) {
2052: case TAG_FMT_BYTE:
2053: if (l>1) {
2054: info_value = &info_data->value;
2055: for (b=0;b<l;b++) {
2056: add_index_long(array, b, (int)(info_value->s[b]));
2057: }
2058: break;
2059: }
2060: case TAG_FMT_USHORT:
2061: case TAG_FMT_ULONG:
2062: if (l==1) {
2063: add_assoc_long(tmpi, name, (int)info_value->u);
2064: } else {
2065: add_index_long(array, ap, (int)info_value->u);
2066: }
2067: break;
2068:
2069: case TAG_FMT_URATIONAL:
2070: snprintf(buffer, sizeof(buffer), "%i/%i", info_value->ur.num, info_value->ur.den);
2071: if (l==1) {
2072: add_assoc_string(tmpi, name, buffer, 1);
2073: } else {
2074: add_index_string(array, ap, buffer, 1);
2075: }
2076: break;
2077:
2078: case TAG_FMT_SBYTE:
2079: if (l>1) {
2080: info_value = &info_data->value;
2081: for (b=0;b<l;b++) {
2082: add_index_long(array, ap, (int)info_value->s[b]);
2083: }
2084: break;
2085: }
2086: case TAG_FMT_SSHORT:
2087: case TAG_FMT_SLONG:
2088: if (l==1) {
2089: add_assoc_long(tmpi, name, info_value->i);
2090: } else {
2091: add_index_long(array, ap, info_value->i);
2092: }
2093: break;
2094:
2095: case TAG_FMT_SRATIONAL:
2096: snprintf(buffer, sizeof(buffer), "%i/%i", info_value->sr.num, info_value->sr.den);
2097: if (l==1) {
2098: add_assoc_string(tmpi, name, buffer, 1);
2099: } else {
2100: add_index_string(array, ap, buffer, 1);
2101: }
2102: break;
2103:
2104: case TAG_FMT_SINGLE:
2105: if (l==1) {
2106: add_assoc_double(tmpi, name, info_value->f);
2107: } else {
2108: add_index_double(array, ap, info_value->f);
2109: }
2110: break;
2111:
2112: case TAG_FMT_DOUBLE:
2113: if (l==1) {
2114: add_assoc_double(tmpi, name, info_value->d);
2115: } else {
2116: add_index_double(array, ap, info_value->d);
2117: }
2118: break;
2119: }
2120: info_value = &info_data->value.list[ap];
2121: }
2122: if (l>1) {
2123: add_assoc_zval(tmpi, name, array);
2124: }
2125: break;
2126: }
2127: }
2128: }
2129: if (sub_array) {
2130: add_assoc_zval(value, exif_get_sectionname(section_index), tmpi);
2131: }
2132: }
2133: }
2134: /* }}} */
2135:
2136: /* {{{ Markers
2137: JPEG markers consist of one or more 0xFF bytes, followed by a marker
2138: code byte (which is not an FF). Here are the marker codes of interest
2139: in this program. (See jdmarker.c for a more complete list.)
2140: */
2141:
2142: #define M_TEM 0x01 /* temp for arithmetic coding */
2143: #define M_RES 0x02 /* reserved */
2144: #define M_SOF0 0xC0 /* Start Of Frame N */
2145: #define M_SOF1 0xC1 /* N indicates which compression process */
2146: #define M_SOF2 0xC2 /* Only SOF0-SOF2 are now in common use */
2147: #define M_SOF3 0xC3
2148: #define M_DHT 0xC4
2149: #define M_SOF5 0xC5 /* NB: codes C4 and CC are NOT SOF markers */
2150: #define M_SOF6 0xC6
2151: #define M_SOF7 0xC7
2152: #define M_JPEG 0x08 /* reserved for extensions */
2153: #define M_SOF9 0xC9
2154: #define M_SOF10 0xCA
2155: #define M_SOF11 0xCB
2156: #define M_DAC 0xCC /* arithmetic table */
2157: #define M_SOF13 0xCD
2158: #define M_SOF14 0xCE
2159: #define M_SOF15 0xCF
2160: #define M_RST0 0xD0 /* restart segment */
2161: #define M_RST1 0xD1
2162: #define M_RST2 0xD2
2163: #define M_RST3 0xD3
2164: #define M_RST4 0xD4
2165: #define M_RST5 0xD5
2166: #define M_RST6 0xD6
2167: #define M_RST7 0xD7
2168: #define M_SOI 0xD8 /* Start Of Image (beginning of datastream) */
2169: #define M_EOI 0xD9 /* End Of Image (end of datastream) */
2170: #define M_SOS 0xDA /* Start Of Scan (begins compressed data) */
2171: #define M_DQT 0xDB
2172: #define M_DNL 0xDC
2173: #define M_DRI 0xDD
2174: #define M_DHP 0xDE
2175: #define M_EXP 0xDF
2176: #define M_APP0 0xE0 /* JPEG: 'JFIFF' AND (additional 'JFXX') */
2177: #define M_EXIF 0xE1 /* Exif Attribute Information */
2178: #define M_APP2 0xE2 /* Flash Pix Extension Data? */
2179: #define M_APP3 0xE3
2180: #define M_APP4 0xE4
2181: #define M_APP5 0xE5
2182: #define M_APP6 0xE6
2183: #define M_APP7 0xE7
2184: #define M_APP8 0xE8
2185: #define M_APP9 0xE9
2186: #define M_APP10 0xEA
2187: #define M_APP11 0xEB
2188: #define M_APP12 0xEC
2189: #define M_APP13 0xED /* IPTC International Press Telecommunications Council */
2190: #define M_APP14 0xEE /* Software, Copyright? */
2191: #define M_APP15 0xEF
2192: #define M_JPG0 0xF0
2193: #define M_JPG1 0xF1
2194: #define M_JPG2 0xF2
2195: #define M_JPG3 0xF3
2196: #define M_JPG4 0xF4
2197: #define M_JPG5 0xF5
2198: #define M_JPG6 0xF6
2199: #define M_JPG7 0xF7
2200: #define M_JPG8 0xF8
2201: #define M_JPG9 0xF9
2202: #define M_JPG10 0xFA
2203: #define M_JPG11 0xFB
2204: #define M_JPG12 0xFC
2205: #define M_JPG13 0xFD
2206: #define M_COM 0xFE /* COMment */
2207:
2208: #define M_PSEUDO 0x123 /* Extra value. */
2209:
2210: /* }}} */
2211:
2212: /* {{{ jpeg2000 markers
2213: */
2214: /* Markers x30 - x3F do not have a segment */
2215: /* Markers x00, x01, xFE, xC0 - xDF ISO/IEC 10918-1 -> M_<xx> */
2216: /* Markers xF0 - xF7 ISO/IEC 10918-3 */
2217: /* Markers xF7 - xF8 ISO/IEC 14495-1 */
2218: /* XY=Main/Tile-header:(R:required, N:not_allowed, O:optional, L:last_marker) */
2219: #define JC_SOC 0x4F /* NN, Start of codestream */
2220: #define JC_SIZ 0x51 /* RN, Image and tile size */
2221: #define JC_COD 0x52 /* RO, Codeing style defaulte */
2222: #define JC_COC 0x53 /* OO, Coding style component */
2223: #define JC_TLM 0x55 /* ON, Tile part length main header */
2224: #define JC_PLM 0x57 /* ON, Packet length main header */
2225: #define JC_PLT 0x58 /* NO, Packet length tile part header */
2226: #define JC_QCD 0x5C /* RO, Quantization default */
2227: #define JC_QCC 0x5D /* OO, Quantization component */
2228: #define JC_RGN 0x5E /* OO, Region of interest */
2229: #define JC_POD 0x5F /* OO, Progression order default */
2230: #define JC_PPM 0x60 /* ON, Packed packet headers main header */
2231: #define JC_PPT 0x61 /* NO, Packet packet headers tile part header */
2232: #define JC_CME 0x64 /* OO, Comment: "LL E <text>" E=0:binary, E=1:ascii */
2233: #define JC_SOT 0x90 /* NR, Start of tile */
2234: #define JC_SOP 0x91 /* NO, Start of packeter default */
2235: #define JC_EPH 0x92 /* NO, End of packet header */
2236: #define JC_SOD 0x93 /* NL, Start of data */
2237: #define JC_EOC 0xD9 /* NN, End of codestream */
2238: /* }}} */
2239:
2240: /* {{{ exif_process_COM
2241: Process a COM marker.
2242: We want to print out the marker contents as legible text;
2243: we must guard against random junk and varying newline representations.
2244: */
2245: static void exif_process_COM (image_info_type *image_info, char *value, size_t length TSRMLS_DC)
2246: {
2247: exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length-2, value+2 TSRMLS_CC);
2248: }
2249: /* }}} */
2250:
2251: /* {{{ exif_process_CME
2252: Process a CME marker.
2253: We want to print out the marker contents as legible text;
2254: we must guard against random junk and varying newline representations.
2255: */
2256: #ifdef EXIF_JPEG2000
2257: static void exif_process_CME (image_info_type *image_info, char *value, size_t length TSRMLS_DC)
2258: {
2259: if (length>3) {
2260: switch(value[2]) {
2261: case 0:
2262: exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, length, value TSRMLS_CC);
2263: break;
2264: case 1:
2265: exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length, value);
2266: break;
2267: default:
2268: php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Undefined JPEG2000 comment encoding");
2269: break;
2270: }
2271: } else {
2272: exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, 0, NULL);
2273: php_error_docref(NULL TSRMLS_CC, E_NOTICE, "JPEG2000 comment section too small");
2274: }
2275: }
2276: #endif
2277: /* }}} */
2278:
2279: /* {{{ exif_process_SOFn
2280: * Process a SOFn marker. This is useful for the image dimensions */
2281: static void exif_process_SOFn (uchar *Data, int marker, jpeg_sof_info *result)
2282: {
2283: /* 0xFF SOSn SectLen(2) Bits(1) Height(2) Width(2) Channels(1) 3*Channels (1) */
2284: result->bits_per_sample = Data[2];
2285: result->height = php_jpg_get16(Data+3);
2286: result->width = php_jpg_get16(Data+5);
2287: result->num_components = Data[7];
2288:
2289: /* switch (marker) {
2290: case M_SOF0: process = "Baseline"; break;
2291: case M_SOF1: process = "Extended sequential"; break;
2292: case M_SOF2: process = "Progressive"; break;
2293: case M_SOF3: process = "Lossless"; break;
2294: case M_SOF5: process = "Differential sequential"; break;
2295: case M_SOF6: process = "Differential progressive"; break;
2296: case M_SOF7: process = "Differential lossless"; break;
2297: case M_SOF9: process = "Extended sequential, arithmetic coding"; break;
2298: case M_SOF10: process = "Progressive, arithmetic coding"; break;
2299: case M_SOF11: process = "Lossless, arithmetic coding"; break;
2300: case M_SOF13: process = "Differential sequential, arithmetic coding"; break;
2301: case M_SOF14: process = "Differential progressive, arithmetic coding"; break;
2302: case M_SOF15: process = "Differential lossless, arithmetic coding"; break;
2303: default: process = "Unknown"; break;
2304: }*/
2305: }
2306: /* }}} */
2307:
2308: /* forward declarations */
2309: static int exif_process_IFD_in_JPEG(image_info_type *ImageInfo, char *dir_start, char *offset_base, size_t IFDlength, size_t displacement, int section_index TSRMLS_DC);
2310: static int exif_process_IFD_TAG( image_info_type *ImageInfo, char *dir_entry, char *offset_base, size_t IFDlength, size_t displacement, int section_index, int ReadNextIFD, tag_table_type tag_table TSRMLS_DC);
2311:
2312: /* {{{ exif_get_markername
2313: Get name of marker */
2314: #ifdef EXIF_DEBUG
2315: static char * exif_get_markername(int marker)
2316: {
2317: switch(marker) {
2318: case 0xC0: return "SOF0";
2319: case 0xC1: return "SOF1";
2320: case 0xC2: return "SOF2";
2321: case 0xC3: return "SOF3";
2322: case 0xC4: return "DHT";
2323: case 0xC5: return "SOF5";
2324: case 0xC6: return "SOF6";
2325: case 0xC7: return "SOF7";
2326: case 0xC9: return "SOF9";
2327: case 0xCA: return "SOF10";
2328: case 0xCB: return "SOF11";
2329: case 0xCD: return "SOF13";
2330: case 0xCE: return "SOF14";
2331: case 0xCF: return "SOF15";
2332: case 0xD8: return "SOI";
2333: case 0xD9: return "EOI";
2334: case 0xDA: return "SOS";
2335: case 0xDB: return "DQT";
2336: case 0xDC: return "DNL";
2337: case 0xDD: return "DRI";
2338: case 0xDE: return "DHP";
2339: case 0xDF: return "EXP";
2340: case 0xE0: return "APP0";
2341: case 0xE1: return "EXIF";
2342: case 0xE2: return "FPIX";
2343: case 0xE3: return "APP3";
2344: case 0xE4: return "APP4";
2345: case 0xE5: return "APP5";
2346: case 0xE6: return "APP6";
2347: case 0xE7: return "APP7";
2348: case 0xE8: return "APP8";
2349: case 0xE9: return "APP9";
2350: case 0xEA: return "APP10";
2351: case 0xEB: return "APP11";
2352: case 0xEC: return "APP12";
2353: case 0xED: return "APP13";
2354: case 0xEE: return "APP14";
2355: case 0xEF: return "APP15";
2356: case 0xF0: return "JPG0";
2357: case 0xFD: return "JPG13";
2358: case 0xFE: return "COM";
2359: case 0x01: return "TEM";
2360: }
2361: return "Unknown";
2362: }
2363: #endif
2364: /* }}} */
2365:
2366: /* {{{ proto string exif_tagname(index)
2367: Get headername for index or false if not defined */
2368: PHP_FUNCTION(exif_tagname)
2369: {
2370: long tag;
2371: char *szTemp;
2372:
2373: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &tag) == FAILURE) {
2374: return;
2375: }
2376:
2377: szTemp = exif_get_tagname(tag, NULL, 0, tag_table_IFD TSRMLS_CC);
2378:
2379: if (tag < 0 || !szTemp || !szTemp[0]) {
2380: RETURN_FALSE;
2381: }
2382:
2383: RETURN_STRING(szTemp, 1)
2384: }
2385: /* }}} */
2386:
2387: /* {{{ exif_ifd_make_value
2388: * Create a value for an ifd from an info_data pointer */
2389: static void* exif_ifd_make_value(image_info_data *info_data, int motorola_intel TSRMLS_DC) {
2390: size_t byte_count;
2391: char *value_ptr, *data_ptr;
2392: size_t i;
2393:
2394: image_info_value *info_value;
2395:
2396: byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
2397: value_ptr = safe_emalloc(max(byte_count, 4), 1, 0);
2398: memset(value_ptr, 0, 4);
2399: if (!info_data->length) {
2400: return value_ptr;
2401: }
2402: if (info_data->format == TAG_FMT_UNDEFINED || info_data->format == TAG_FMT_STRING
2403: || (byte_count>1 && (info_data->format == TAG_FMT_BYTE || info_data->format == TAG_FMT_SBYTE))
2404: ) {
2405: memmove(value_ptr, info_data->value.s, byte_count);
2406: return value_ptr;
2407: } else if (info_data->format == TAG_FMT_BYTE) {
2408: *value_ptr = info_data->value.u;
2409: return value_ptr;
2410: } else if (info_data->format == TAG_FMT_SBYTE) {
2411: *value_ptr = info_data->value.i;
2412: return value_ptr;
2413: } else {
2414: data_ptr = value_ptr;
2415: for(i=0; i<info_data->length; i++) {
2416: if (info_data->length==1) {
2417: info_value = &info_data->value;
2418: } else {
2419: info_value = &info_data->value.list[i];
2420: }
2421: switch(info_data->format) {
2422: case TAG_FMT_USHORT:
2423: php_ifd_set16u(data_ptr, info_value->u, motorola_intel);
2424: data_ptr += 2;
2425: break;
2426: case TAG_FMT_ULONG:
2427: php_ifd_set32u(data_ptr, info_value->u, motorola_intel);
2428: data_ptr += 4;
2429: break;
2430: case TAG_FMT_SSHORT:
2431: php_ifd_set16u(data_ptr, info_value->i, motorola_intel);
2432: data_ptr += 2;
2433: break;
2434: case TAG_FMT_SLONG:
2435: php_ifd_set32u(data_ptr, info_value->i, motorola_intel);
2436: data_ptr += 4;
2437: break;
2438: case TAG_FMT_URATIONAL:
2439: php_ifd_set32u(data_ptr, info_value->sr.num, motorola_intel);
2440: php_ifd_set32u(data_ptr+4, info_value->sr.den, motorola_intel);
2441: data_ptr += 8;
2442: break;
2443: case TAG_FMT_SRATIONAL:
2444: php_ifd_set32u(data_ptr, info_value->ur.num, motorola_intel);
2445: php_ifd_set32u(data_ptr+4, info_value->ur.den, motorola_intel);
2446: data_ptr += 8;
2447: break;
2448: case TAG_FMT_SINGLE:
2449: memmove(data_ptr, &info_data->value.f, byte_count);
2450: data_ptr += 4;
2451: break;
2452: case TAG_FMT_DOUBLE:
2453: memmove(data_ptr, &info_data->value.d, byte_count);
2454: data_ptr += 8;
2455: break;
2456: }
2457: }
2458: }
2459: return value_ptr;
2460: }
2461: /* }}} */
2462:
2463: /* {{{ exif_thumbnail_build
2464: * Check and build thumbnail */
2465: static void exif_thumbnail_build(image_info_type *ImageInfo TSRMLS_DC) {
2466: size_t new_size, new_move, new_value;
2467: char *new_data;
2468: void *value_ptr;
2469: int i, byte_count;
2470: image_info_list *info_list;
2471: image_info_data *info_data;
2472: #ifdef EXIF_DEBUG
2473: char tagname[64];
2474: #endif
2475:
2476: if (!ImageInfo->read_thumbnail || !ImageInfo->Thumbnail.offset || !ImageInfo->Thumbnail.size) {
2477: return; /* ignore this call */
2478: }
2479: #ifdef EXIF_DEBUG
2480: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: filetype = %d", ImageInfo->Thumbnail.filetype);
2481: #endif
2482: switch(ImageInfo->Thumbnail.filetype) {
2483: default:
2484: case IMAGE_FILETYPE_JPEG:
2485: /* done */
2486: break;
2487: case IMAGE_FILETYPE_TIFF_II:
2488: case IMAGE_FILETYPE_TIFF_MM:
2489: info_list = &ImageInfo->info_list[SECTION_THUMBNAIL];
2490: new_size = 8 + 2 + info_list->count * 12 + 4;
2491: #ifdef EXIF_DEBUG
2492: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: size of signature + directory(%d): 0x%02X", info_list->count, new_size);
2493: #endif
2494: new_value= new_size; /* offset for ifd values outside ifd directory */
2495: for (i=0; i<info_list->count; i++) {
2496: info_data = &info_list->list[i];
2497: byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
2498: if (byte_count > 4) {
2499: new_size += byte_count;
2500: }
2501: }
2502: new_move = new_size;
2503: new_data = safe_erealloc(ImageInfo->Thumbnail.data, 1, ImageInfo->Thumbnail.size, new_size);
2504: ImageInfo->Thumbnail.data = new_data;
2505: memmove(ImageInfo->Thumbnail.data + new_move, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
2506: ImageInfo->Thumbnail.size += new_size;
2507: /* fill in data */
2508: if (ImageInfo->motorola_intel) {
2509: memmove(new_data, "MM\x00\x2a\x00\x00\x00\x08", 8);
2510: } else {
2511: memmove(new_data, "II\x2a\x00\x08\x00\x00\x00", 8);
2512: }
2513: new_data += 8;
2514: php_ifd_set16u(new_data, info_list->count, ImageInfo->motorola_intel);
2515: new_data += 2;
2516: for (i=0; i<info_list->count; i++) {
2517: info_data = &info_list->list[i];
2518: byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
2519: #ifdef EXIF_DEBUG
2520: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: process tag(x%04X=%s): %s%s (%d bytes)", info_data->tag, exif_get_tagname(info_data->tag, tagname, -12, tag_table_IFD TSRMLS_CC), (info_data->length>1)&&info_data->format!=TAG_FMT_UNDEFINED&&info_data->format!=TAG_FMT_STRING?"ARRAY OF ":"", exif_get_tagformat(info_data->format), byte_count);
2521: #endif
2522: if (info_data->tag==TAG_STRIP_OFFSETS || info_data->tag==TAG_JPEG_INTERCHANGE_FORMAT) {
2523: php_ifd_set16u(new_data + 0, info_data->tag, ImageInfo->motorola_intel);
2524: php_ifd_set16u(new_data + 2, TAG_FMT_ULONG, ImageInfo->motorola_intel);
2525: php_ifd_set32u(new_data + 4, 1, ImageInfo->motorola_intel);
2526: php_ifd_set32u(new_data + 8, new_move, ImageInfo->motorola_intel);
2527: } else {
2528: php_ifd_set16u(new_data + 0, info_data->tag, ImageInfo->motorola_intel);
2529: php_ifd_set16u(new_data + 2, info_data->format, ImageInfo->motorola_intel);
2530: php_ifd_set32u(new_data + 4, info_data->length, ImageInfo->motorola_intel);
2531: value_ptr = exif_ifd_make_value(info_data, ImageInfo->motorola_intel TSRMLS_CC);
2532: if (byte_count <= 4) {
2533: memmove(new_data+8, value_ptr, 4);
2534: } else {
2535: php_ifd_set32u(new_data+8, new_value, ImageInfo->motorola_intel);
2536: #ifdef EXIF_DEBUG
2537: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: writing with value offset: 0x%04X + 0x%02X", new_value, byte_count);
2538: #endif
2539: memmove(ImageInfo->Thumbnail.data+new_value, value_ptr, byte_count);
2540: new_value += byte_count;
2541: }
2542: efree(value_ptr);
2543: }
2544: new_data += 12;
2545: }
2546: memset(new_data, 0, 4); /* next ifd pointer */
2547: #ifdef EXIF_DEBUG
2548: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: created");
2549: #endif
2550: break;
2551: }
2552: }
2553: /* }}} */
2554:
2555: /* {{{ exif_thumbnail_extract
2556: * Grab the thumbnail, corrected */
2557: static void exif_thumbnail_extract(image_info_type *ImageInfo, char *offset, size_t length TSRMLS_DC) {
2558: if (ImageInfo->Thumbnail.data) {
2559: exif_error_docref("exif_read_data#error_mult_thumb" EXIFERR_CC, ImageInfo, E_WARNING, "Multiple possible thumbnails");
2560: return; /* Should not happen */
2561: }
2562: if (!ImageInfo->read_thumbnail) {
2563: return; /* ignore this call */
2564: }
2565: /* according to exif2.1, the thumbnail is not supposed to be greater than 64K */
2566: if (ImageInfo->Thumbnail.size >= 65536
2567: || ImageInfo->Thumbnail.size <= 0
2568: || ImageInfo->Thumbnail.offset <= 0
2569: ) {
2570: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Illegal thumbnail size/offset");
2571: return;
2572: }
2573: /* Check to make sure we are not going to go past the ExifLength */
2574: if ((ImageInfo->Thumbnail.offset + ImageInfo->Thumbnail.size) > length) {
2575: EXIF_ERRLOG_THUMBEOF(ImageInfo)
2576: return;
2577: }
2578: ImageInfo->Thumbnail.data = estrndup(offset + ImageInfo->Thumbnail.offset, ImageInfo->Thumbnail.size);
2579: exif_thumbnail_build(ImageInfo TSRMLS_CC);
2580: }
2581: /* }}} */
2582:
2583: /* {{{ exif_process_undefined
2584: * Copy a string/buffer in Exif header to a character string and return length of allocated buffer if any. */
2585: static int exif_process_undefined(char **result, char *value, size_t byte_count TSRMLS_DC) {
2586: /* we cannot use strlcpy - here the problem is that we have to copy NUL
2587: * chars up to byte_count, we also have to add a single NUL character to
2588: * force end of string.
2589: * estrndup does not return length
2590: */
2591: if (byte_count) {
2592: (*result) = estrndup(value, byte_count); /* NULL @ byte_count!!! */
2593: return byte_count+1;
2594: }
2595: return 0;
2596: }
2597: /* }}} */
2598:
2599: /* {{{ exif_process_string_raw
2600: * Copy a string in Exif header to a character string returns length of allocated buffer if any. */
2601: #if !EXIF_USE_MBSTRING
2602: static int exif_process_string_raw(char **result, char *value, size_t byte_count) {
2603: /* we cannot use strlcpy - here the problem is that we have to copy NUL
2604: * chars up to byte_count, we also have to add a single NUL character to
2605: * force end of string.
2606: */
2607: if (byte_count) {
2608: (*result) = safe_emalloc(byte_count, 1, 1);
2609: memcpy(*result, value, byte_count);
2610: (*result)[byte_count] = '\0';
2611: return byte_count+1;
2612: }
2613: return 0;
2614: }
2615: #endif
2616: /* }}} */
2617:
2618: /* {{{ exif_process_string
2619: * Copy a string in Exif header to a character string and return length of allocated buffer if any.
2620: * In contrast to exif_process_string this function does allways return a string buffer */
2621: static int exif_process_string(char **result, char *value, size_t byte_count TSRMLS_DC) {
2622: /* we cannot use strlcpy - here the problem is that we cannot use strlen to
2623: * determin length of string and we cannot use strlcpy with len=byte_count+1
2624: * because then we might get into an EXCEPTION if we exceed an allocated
2625: * memory page...so we use php_strnlen in conjunction with memcpy and add the NUL
2626: * char.
2627: * estrdup would sometimes allocate more memory and does not return length
2628: */
2629: if ((byte_count=php_strnlen(value, byte_count)) > 0) {
2630: return exif_process_undefined(result, value, byte_count TSRMLS_CC);
2631: }
2632: (*result) = estrndup("", 1); /* force empty string */
2633: return byte_count+1;
2634: }
2635: /* }}} */
2636:
2637: /* {{{ exif_process_user_comment
2638: * Process UserComment in IFD. */
2639: static int exif_process_user_comment(image_info_type *ImageInfo, char **pszInfoPtr, char **pszEncoding, char *szValuePtr, int ByteCount TSRMLS_DC)
2640: {
2641: int a;
2642:
2643: #if EXIF_USE_MBSTRING
2644: char *decode;
2645: size_t len;;
2646: #endif
2647:
2648: *pszEncoding = NULL;
2649: /* Copy the comment */
2650: if (ByteCount>=8) {
2651: if (!memcmp(szValuePtr, "UNICODE\0", 8)) {
2652: *pszEncoding = estrdup((const char*)szValuePtr);
2653: szValuePtr = szValuePtr+8;
2654: ByteCount -= 8;
2655: #if EXIF_USE_MBSTRING
2656: /* First try to detect BOM: ZERO WIDTH NOBREAK SPACE (FEFF 16)
2657: * since we have no encoding support for the BOM yet we skip that.
2658: */
2659: if (!memcmp(szValuePtr, "\xFE\xFF", 2)) {
2660: decode = "UCS-2BE";
2661: szValuePtr = szValuePtr+2;
2662: ByteCount -= 2;
2663: } else if (!memcmp(szValuePtr, "\xFF\xFE", 2)) {
2664: decode = "UCS-2LE";
2665: szValuePtr = szValuePtr+2;
2666: ByteCount -= 2;
2667: } else if (ImageInfo->motorola_intel) {
2668: decode = ImageInfo->decode_unicode_be;
2669: } else {
2670: decode = ImageInfo->decode_unicode_le;
2671: }
2672: *pszInfoPtr = php_mb_convert_encoding(szValuePtr, ByteCount, ImageInfo->encode_unicode, decode, &len TSRMLS_CC);
2673: return len;
2674: #else
2675: return exif_process_string_raw(pszInfoPtr, szValuePtr, ByteCount);
2676: #endif
2677: } else
2678: if (!memcmp(szValuePtr, "ASCII\0\0\0", 8)) {
2679: *pszEncoding = estrdup((const char*)szValuePtr);
2680: szValuePtr = szValuePtr+8;
2681: ByteCount -= 8;
2682: } else
2683: if (!memcmp(szValuePtr, "JIS\0\0\0\0\0", 8)) {
2684: /* JIS should be tanslated to MB or we leave it to the user - leave it to the user */
2685: *pszEncoding = estrdup((const char*)szValuePtr);
2686: szValuePtr = szValuePtr+8;
2687: ByteCount -= 8;
2688: #if EXIF_USE_MBSTRING
2689: if (ImageInfo->motorola_intel) {
2690: *pszInfoPtr = php_mb_convert_encoding(szValuePtr, ByteCount, ImageInfo->encode_jis, ImageInfo->decode_jis_be, &len TSRMLS_CC);
2691: } else {
2692: *pszInfoPtr = php_mb_convert_encoding(szValuePtr, ByteCount, ImageInfo->encode_jis, ImageInfo->decode_jis_le, &len TSRMLS_CC);
2693: }
2694: return len;
2695: #else
2696: return exif_process_string_raw(pszInfoPtr, szValuePtr, ByteCount);
2697: #endif
2698: } else
2699: if (!memcmp(szValuePtr, "\0\0\0\0\0\0\0\0", 8)) {
2700: /* 8 NULL means undefined and should be ASCII... */
2701: *pszEncoding = estrdup("UNDEFINED");
2702: szValuePtr = szValuePtr+8;
2703: ByteCount -= 8;
2704: }
2705: }
2706:
2707: /* Olympus has this padded with trailing spaces. Remove these first. */
2708: if (ByteCount>0) {
2709: for (a=ByteCount-1;a && szValuePtr[a]==' ';a--) {
2710: (szValuePtr)[a] = '\0';
2711: }
2712: }
2713:
2714: /* normal text without encoding */
2715: exif_process_string(pszInfoPtr, szValuePtr, ByteCount TSRMLS_CC);
2716: return strlen(*pszInfoPtr);
2717: }
2718: /* }}} */
2719:
2720: /* {{{ exif_process_unicode
2721: * Process unicode field in IFD. */
2722: static int exif_process_unicode(image_info_type *ImageInfo, xp_field_type *xp_field, int tag, char *szValuePtr, int ByteCount TSRMLS_DC)
2723: {
2724: xp_field->tag = tag;
2725:
2726: /* Copy the comment */
2727: #if EXIF_USE_MBSTRING
2728: /* What if MS supports big-endian with XP? */
2729: /* if (ImageInfo->motorola_intel) {
2730: xp_field->value = php_mb_convert_encoding(szValuePtr, ByteCount, ImageInfo->encode_unicode, ImageInfo->decode_unicode_be, &xp_field->size TSRMLS_CC);
2731: } else {
2732: xp_field->value = php_mb_convert_encoding(szValuePtr, ByteCount, ImageInfo->encode_unicode, ImageInfo->decode_unicode_le, &xp_field->size TSRMLS_CC);
2733: }*/
2734: xp_field->value = php_mb_convert_encoding(szValuePtr, ByteCount, ImageInfo->encode_unicode, ImageInfo->decode_unicode_le, &xp_field->size TSRMLS_CC);
2735: return xp_field->size;
2736: #else
2737: xp_field->size = exif_process_string_raw(&xp_field->value, szValuePtr, ByteCount);
2738: return xp_field->size;
2739: #endif
2740: }
2741: /* }}} */
2742:
2743: /* {{{ exif_process_IFD_in_MAKERNOTE
2744: * Process nested IFDs directories in Maker Note. */
2745: static int exif_process_IFD_in_MAKERNOTE(image_info_type *ImageInfo, char * value_ptr, int value_len, char *offset_base, size_t IFDlength, size_t displacement TSRMLS_DC)
2746: {
2747: int de, i=0, section_index = SECTION_MAKERNOTE;
2748: int NumDirEntries, old_motorola_intel, offset_diff;
2749: const maker_note_type *maker_note;
2750: char *dir_start;
2751:
2752: for (i=0; i<=sizeof(maker_note_array)/sizeof(maker_note_type); i++) {
2753: if (i==sizeof(maker_note_array)/sizeof(maker_note_type))
2754: return FALSE;
2755: maker_note = maker_note_array+i;
2756:
2757: /*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "check (%s,%s)", maker_note->make?maker_note->make:"", maker_note->model?maker_note->model:"");*/
2758: if (maker_note->make && (!ImageInfo->make || strcmp(maker_note->make, ImageInfo->make)))
2759: continue;
2760: if (maker_note->model && (!ImageInfo->model || strcmp(maker_note->model, ImageInfo->model)))
2761: continue;
2762: if (maker_note->id_string && strncmp(maker_note->id_string, value_ptr, maker_note->id_string_len))
2763: continue;
2764: break;
2765: }
2766:
2767: dir_start = value_ptr + maker_note->offset;
2768:
2769: #ifdef EXIF_DEBUG
2770: 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));
2771: #endif
2772:
2773: ImageInfo->sections_found |= FOUND_MAKERNOTE;
2774:
2775: old_motorola_intel = ImageInfo->motorola_intel;
2776: switch (maker_note->byte_order) {
2777: case MN_ORDER_INTEL:
2778: ImageInfo->motorola_intel = 0;
2779: break;
2780: case MN_ORDER_MOTOROLA:
2781: ImageInfo->motorola_intel = 1;
2782: break;
2783: default:
2784: case MN_ORDER_NORMAL:
2785: break;
2786: }
2787:
2788: NumDirEntries = php_ifd_get16u(dir_start, ImageInfo->motorola_intel);
2789:
2790: switch (maker_note->offset_mode) {
2791: case MN_OFFSET_MAKER:
2792: offset_base = value_ptr;
2793: break;
2794: case MN_OFFSET_GUESS:
2795: offset_diff = 2 + NumDirEntries*12 + 4 - php_ifd_get32u(dir_start+10, ImageInfo->motorola_intel);
2796: #ifdef EXIF_DEBUG
2797: 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);
2798: #endif
2799: offset_base = value_ptr + offset_diff;
2800: break;
2801: default:
2802: case MN_OFFSET_NORMAL:
2803: break;
2804: }
2805:
2806: if ((2+NumDirEntries*12) > value_len) {
2807: exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size: 2 + x%04X*12 = x%04X > x%04X", NumDirEntries, 2+NumDirEntries*12, value_len);
2808: return FALSE;
2809: }
2810:
2811: for (de=0;de<NumDirEntries;de++) {
2812: if (!exif_process_IFD_TAG(ImageInfo, dir_start + 2 + 12 * de,
2813: offset_base, IFDlength, displacement, section_index, 0, maker_note->tag_table TSRMLS_CC)) {
2814: return FALSE;
2815: }
2816: }
2817: ImageInfo->motorola_intel = old_motorola_intel;
2818: /* NextDirOffset (must be NULL) = php_ifd_get32u(dir_start+2+12*de, ImageInfo->motorola_intel);*/
2819: #ifdef EXIF_DEBUG
2820: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Subsection %s done", exif_get_sectionname(SECTION_MAKERNOTE));
2821: #endif
2822: return TRUE;
2823: }
2824: /* }}} */
2825:
2826: /* {{{ exif_process_IFD_TAG
2827: * Process one of the nested IFDs directories. */
2828: static int exif_process_IFD_TAG(image_info_type *ImageInfo, char *dir_entry, char *offset_base, size_t IFDlength, size_t displacement, int section_index, int ReadNextIFD, tag_table_type tag_table TSRMLS_DC)
2829: {
2830: size_t length;
2831: int tag, format, components;
2832: char *value_ptr, tagname[64], cbuf[32], *outside=NULL;
2833: size_t byte_count, offset_val, fpos, fgot;
2834: int64_t byte_count_signed;
2835: xp_field_type *tmp_xp;
2836: #ifdef EXIF_DEBUG
2837: char *dump_data;
2838: int dump_free;
2839: #endif /* EXIF_DEBUG */
2840:
2841: /* Protect against corrupt headers */
2842: if (ImageInfo->ifd_nesting_level > MAX_IFD_NESTING_LEVEL) {
2843: exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "corrupt EXIF header: maximum directory nesting level reached");
2844: return FALSE;
2845: }
2846: ImageInfo->ifd_nesting_level++;
2847:
2848: tag = php_ifd_get16u(dir_entry, ImageInfo->motorola_intel);
2849: format = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
2850: components = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel);
2851:
2852: if (!format || format > NUM_FORMATS) {
2853: /* (-1) catches illegal zero case as unsigned underflows to positive large. */
2854: exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal format code 0x%04X, suppose BYTE", tag, exif_get_tagname(tag, tagname, -12, tag_table TSRMLS_CC), format);
2855: format = TAG_FMT_BYTE;
2856: /*return TRUE;*/
2857: }
2858:
2859: if (components < 0) {
2860: exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal components(%ld)", tag, exif_get_tagname(tag, tagname, -12, tag_table TSRMLS_CC), components);
2861: return FALSE;
2862: }
2863:
2864: byte_count_signed = (int64_t)components * php_tiff_bytes_per_format[format];
2865:
2866: if (byte_count_signed < 0 || (byte_count_signed > INT32_MAX)) {
2867: exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal byte_count", tag, exif_get_tagname(tag, tagname, -12, tag_table TSRMLS_CC));
2868: return FALSE;
2869: }
2870:
2871: byte_count = (size_t)byte_count_signed;
2872:
2873: if (byte_count > 4) {
2874: offset_val = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
2875: /* If its bigger than 4 bytes, the dir entry contains an offset. */
2876: value_ptr = offset_base+offset_val;
2877: if (byte_count > IFDlength || offset_val > IFDlength-byte_count || value_ptr < dir_entry) {
2878: /* It is important to check for IMAGE_FILETYPE_TIFF
2879: * JPEG does not use absolute pointers instead its pointers are
2880: * relative to the start of the TIFF header in APP1 section. */
2881: 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)) {
2882: if (value_ptr < dir_entry) {
2883: /* we can read this if offset_val > 0 */
2884: /* some files have their values in other parts of the file */
2885: exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal pointer offset(x%04X < x%04X)", tag, exif_get_tagname(tag, tagname, -12, tag_table TSRMLS_CC), offset_val, dir_entry);
2886: } else {
2887: /* this is for sure not allowed */
2888: /* exception are IFD pointers */
2889: exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal pointer offset(x%04X + x%04X = x%04X > x%04X)", tag, exif_get_tagname(tag, tagname, -12, tag_table TSRMLS_CC), offset_val, byte_count, offset_val+byte_count, IFDlength);
2890: }
2891: return FALSE;
2892: }
2893: if (byte_count>sizeof(cbuf)) {
2894: /* mark as outside range and get buffer */
2895: value_ptr = safe_emalloc(byte_count, 1, 0);
2896: outside = value_ptr;
2897: } else {
2898: /* In most cases we only access a small range so
2899: * it is faster to use a static buffer there
2900: * BUT it offers also the possibility to have
2901: * pointers read without the need to free them
2902: * explicitley before returning. */
2903: memset(&cbuf, 0, sizeof(cbuf));
2904: value_ptr = cbuf;
2905: }
2906:
2907: fpos = php_stream_tell(ImageInfo->infile);
2908: php_stream_seek(ImageInfo->infile, offset_val, SEEK_SET);
2909: fgot = php_stream_tell(ImageInfo->infile);
2910: if (fgot!=offset_val) {
2911: EFREE_IF(outside);
2912: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Wrong file pointer: 0x%08X != 0x%08X", fgot, offset_val);
2913: return FALSE;
2914: }
2915: fgot = php_stream_read(ImageInfo->infile, value_ptr, byte_count);
2916: php_stream_seek(ImageInfo->infile, fpos, SEEK_SET);
2917: if (fgot<byte_count) {
2918: EFREE_IF(outside);
2919: EXIF_ERRLOG_FILEEOF(ImageInfo)
2920: return FALSE;
2921: }
2922: }
2923: } else {
2924: /* 4 bytes or less and value is in the dir entry itself */
2925: value_ptr = dir_entry+8;
2926: offset_val= value_ptr-offset_base;
2927: }
2928:
2929: ImageInfo->sections_found |= FOUND_ANY_TAG;
2930: #ifdef EXIF_DEBUG
2931: dump_data = exif_dump_data(&dump_free, format, components, length, ImageInfo->motorola_intel, value_ptr TSRMLS_CC);
2932: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process tag(x%04X=%s,@x%04X + x%04X(=%d)): %s%s %s", tag, exif_get_tagname(tag, tagname, -12, tag_table TSRMLS_CC), offset_val+displacement, byte_count, byte_count, (components>1)&&format!=TAG_FMT_UNDEFINED&&format!=TAG_FMT_STRING?"ARRAY OF ":"", exif_get_tagformat(format), dump_data);
2933: if (dump_free) {
2934: efree(dump_data);
2935: }
2936: #endif
2937:
2938: if (section_index==SECTION_THUMBNAIL) {
2939: if (!ImageInfo->Thumbnail.data) {
2940: switch(tag) {
2941: case TAG_IMAGEWIDTH:
2942: case TAG_COMP_IMAGE_WIDTH:
2943: ImageInfo->Thumbnail.width = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
2944: break;
2945:
2946: case TAG_IMAGEHEIGHT:
2947: case TAG_COMP_IMAGE_HEIGHT:
2948: ImageInfo->Thumbnail.height = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
2949: break;
2950:
2951: case TAG_STRIP_OFFSETS:
2952: case TAG_JPEG_INTERCHANGE_FORMAT:
2953: /* accept both formats */
2954: ImageInfo->Thumbnail.offset = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
2955: break;
2956:
2957: case TAG_STRIP_BYTE_COUNTS:
2958: if (ImageInfo->FileType == IMAGE_FILETYPE_TIFF_II || ImageInfo->FileType == IMAGE_FILETYPE_TIFF_MM) {
2959: ImageInfo->Thumbnail.filetype = ImageInfo->FileType;
2960: } else {
2961: /* motorola is easier to read */
2962: ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_TIFF_MM;
2963: }
2964: ImageInfo->Thumbnail.size = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
2965: break;
2966:
2967: case TAG_JPEG_INTERCHANGE_FORMAT_LEN:
2968: if (ImageInfo->Thumbnail.filetype == IMAGE_FILETYPE_UNKNOWN) {
2969: ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_JPEG;
2970: ImageInfo->Thumbnail.size = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
2971: }
2972: break;
2973: }
2974: }
2975: } else {
2976: if (section_index==SECTION_IFD0 || section_index==SECTION_EXIF)
2977: switch(tag) {
2978: case TAG_COPYRIGHT:
2979: /* check for "<photographer> NUL <editor> NUL" */
2980: if (byte_count>1 && (length=php_strnlen(value_ptr, byte_count)) > 0) {
2981: if (length<byte_count-1) {
2982: /* When there are any characters after the first NUL */
2983: ImageInfo->CopyrightPhotographer = estrdup(value_ptr);
2984: ImageInfo->CopyrightEditor = estrdup(value_ptr+length+1);
2985: spprintf(&ImageInfo->Copyright, 0, "%s, %s", value_ptr, value_ptr+length+1);
2986: /* format = TAG_FMT_UNDEFINED; this musn't be ASCII */
2987: /* but we are not supposed to change this */
2988: /* keep in mind that image_info does not store editor value */
2989: } else {
2990: ImageInfo->Copyright = estrdup(value_ptr);
2991: }
2992: }
2993: break;
2994:
2995: case TAG_USERCOMMENT:
2996: ImageInfo->UserCommentLength = exif_process_user_comment(ImageInfo, &(ImageInfo->UserComment), &(ImageInfo->UserCommentEncoding), value_ptr, byte_count TSRMLS_CC);
2997: break;
2998:
2999: case TAG_XP_TITLE:
3000: case TAG_XP_COMMENTS:
3001: case TAG_XP_AUTHOR:
3002: case TAG_XP_KEYWORDS:
3003: case TAG_XP_SUBJECT:
3004: tmp_xp = (xp_field_type*)safe_erealloc(ImageInfo->xp_fields.list, (ImageInfo->xp_fields.count+1), sizeof(xp_field_type), 0);
3005: ImageInfo->sections_found |= FOUND_WINXP;
3006: ImageInfo->xp_fields.list = tmp_xp;
3007: ImageInfo->xp_fields.count++;
3008: exif_process_unicode(ImageInfo, &(ImageInfo->xp_fields.list[ImageInfo->xp_fields.count-1]), tag, value_ptr, byte_count TSRMLS_CC);
3009: break;
3010:
3011: case TAG_FNUMBER:
3012: /* Simplest way of expressing aperture, so I trust it the most.
3013: (overwrite previously computed value if there is one) */
3014: ImageInfo->ApertureFNumber = (float)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
3015: break;
3016:
3017: case TAG_APERTURE:
3018: case TAG_MAX_APERTURE:
3019: /* More relevant info always comes earlier, so only use this field if we don't
3020: have appropriate aperture information yet. */
3021: if (ImageInfo->ApertureFNumber == 0) {
3022: ImageInfo->ApertureFNumber
3023: = (float)exp(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC)*log(2)*0.5);
3024: }
3025: break;
3026:
3027: case TAG_SHUTTERSPEED:
3028: /* More complicated way of expressing exposure time, so only use
3029: this value if we don't already have it from somewhere else.
3030: SHUTTERSPEED comes after EXPOSURE TIME
3031: */
3032: if (ImageInfo->ExposureTime == 0) {
3033: ImageInfo->ExposureTime
3034: = (float)(1/exp(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC)*log(2)));
3035: }
3036: break;
3037: case TAG_EXPOSURETIME:
3038: ImageInfo->ExposureTime = -1;
3039: break;
3040:
3041: case TAG_COMP_IMAGE_WIDTH:
3042: ImageInfo->ExifImageWidth = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
3043: break;
3044:
3045: case TAG_FOCALPLANE_X_RES:
3046: ImageInfo->FocalplaneXRes = exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
3047: break;
3048:
3049: case TAG_SUBJECT_DISTANCE:
3050: /* Inidcates the distacne the autofocus camera is focused to.
3051: Tends to be less accurate as distance increases. */
3052: ImageInfo->Distance = (float)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
3053: break;
3054:
3055: case TAG_FOCALPLANE_RESOLUTION_UNIT:
3056: switch((int)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC)) {
3057: case 1: ImageInfo->FocalplaneUnits = 25.4; break; /* inch */
3058: case 2:
3059: /* According to the information I was using, 2 measn meters.
3060: But looking at the Cannon powershot's files, inches is the only
3061: sensible value. */
3062: ImageInfo->FocalplaneUnits = 25.4;
3063: break;
3064:
3065: case 3: ImageInfo->FocalplaneUnits = 10; break; /* centimeter */
3066: case 4: ImageInfo->FocalplaneUnits = 1; break; /* milimeter */
3067: case 5: ImageInfo->FocalplaneUnits = .001; break; /* micrometer */
3068: }
3069: break;
3070:
3071: case TAG_SUB_IFD:
3072: if (format==TAG_FMT_IFD) {
3073: /* If this is called we are either in a TIFFs thumbnail or a JPEG where we cannot handle it */
3074: /* TIFF thumbnail: our data structure cannot store a thumbnail of a thumbnail */
3075: /* JPEG do we have the data area and what to do with it */
3076: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Skip SUB IFD");
3077: }
3078: break;
3079:
3080: case TAG_MAKE:
3081: ImageInfo->make = estrdup(value_ptr);
3082: break;
3083: case TAG_MODEL:
3084: ImageInfo->model = estrdup(value_ptr);
3085: break;
3086:
3087: case TAG_MAKER_NOTE:
3088: exif_process_IFD_in_MAKERNOTE(ImageInfo, value_ptr, byte_count, offset_base, IFDlength, displacement TSRMLS_CC);
3089: break;
3090:
3091: case TAG_EXIF_IFD_POINTER:
3092: case TAG_GPS_IFD_POINTER:
3093: case TAG_INTEROP_IFD_POINTER:
3094: if (ReadNextIFD) {
3095: char *Subdir_start;
3096: int sub_section_index = 0;
3097: switch(tag) {
3098: case TAG_EXIF_IFD_POINTER:
3099: #ifdef EXIF_DEBUG
3100: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found EXIF");
3101: #endif
3102: ImageInfo->sections_found |= FOUND_EXIF;
3103: sub_section_index = SECTION_EXIF;
3104: break;
3105: case TAG_GPS_IFD_POINTER:
3106: #ifdef EXIF_DEBUG
3107: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found GPS");
3108: #endif
3109: ImageInfo->sections_found |= FOUND_GPS;
3110: sub_section_index = SECTION_GPS;
3111: break;
3112: case TAG_INTEROP_IFD_POINTER:
3113: #ifdef EXIF_DEBUG
3114: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found INTEROPERABILITY");
3115: #endif
3116: ImageInfo->sections_found |= FOUND_INTEROP;
3117: sub_section_index = SECTION_INTEROP;
3118: break;
3119: }
3120: Subdir_start = offset_base + php_ifd_get32u(value_ptr, ImageInfo->motorola_intel);
3121: if (Subdir_start < offset_base || Subdir_start > offset_base+IFDlength) {
3122: exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD Pointer");
3123: return FALSE;
3124: }
3125: if (!exif_process_IFD_in_JPEG(ImageInfo, Subdir_start, offset_base, IFDlength, displacement, sub_section_index TSRMLS_CC)) {
3126: return FALSE;
3127: }
3128: #ifdef EXIF_DEBUG
3129: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Subsection %s done", exif_get_sectionname(sub_section_index));
3130: #endif
3131: }
3132: }
3133: }
3134: exif_iif_add_tag(ImageInfo, section_index, exif_get_tagname(tag, tagname, sizeof(tagname), tag_table TSRMLS_CC), tag, format, components, value_ptr TSRMLS_CC);
3135: EFREE_IF(outside);
3136: return TRUE;
3137: }
3138: /* }}} */
3139:
3140: /* {{{ exif_process_IFD_in_JPEG
3141: * Process one of the nested IFDs directories. */
3142: static int exif_process_IFD_in_JPEG(image_info_type *ImageInfo, char *dir_start, char *offset_base, size_t IFDlength, size_t displacement, int section_index TSRMLS_DC)
3143: {
3144: int de;
3145: int NumDirEntries;
3146: int NextDirOffset;
3147:
3148: #ifdef EXIF_DEBUG
3149: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process %s (x%04X(=%d))", exif_get_sectionname(section_index), IFDlength, IFDlength);
3150: #endif
3151:
3152: ImageInfo->sections_found |= FOUND_IFD0;
3153:
3154: NumDirEntries = php_ifd_get16u(dir_start, ImageInfo->motorola_intel);
3155:
3156: if ((dir_start+2+NumDirEntries*12) > (offset_base+IFDlength)) {
3157: 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);
3158: return FALSE;
3159: }
3160:
3161: for (de=0;de<NumDirEntries;de++) {
3162: if (!exif_process_IFD_TAG(ImageInfo, dir_start + 2 + 12 * de,
3163: offset_base, IFDlength, displacement, section_index, 1, exif_get_tag_table(section_index) TSRMLS_CC)) {
3164: return FALSE;
3165: }
3166: }
3167: /*
3168: * Ignore IFD2 if it purportedly exists
3169: */
3170: if (section_index == SECTION_THUMBNAIL) {
3171: return TRUE;
3172: }
3173: /*
3174: * Hack to make it process IDF1 I hope
3175: * There are 2 IDFs, the second one holds the keys (0x0201 and 0x0202) to the thumbnail
3176: */
3177: NextDirOffset = php_ifd_get32u(dir_start+2+12*de, ImageInfo->motorola_intel);
3178: if (NextDirOffset) {
3179: /* the next line seems false but here IFDlength means length of all IFDs */
3180: if (offset_base + NextDirOffset < offset_base || offset_base + NextDirOffset > offset_base+IFDlength) {
3181: exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD offset");
3182: return FALSE;
3183: }
3184: /* That is the IFD for the first thumbnail */
3185: #ifdef EXIF_DEBUG
3186: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Expect next IFD to be thumbnail");
3187: #endif
3188: if (exif_process_IFD_in_JPEG(ImageInfo, offset_base + NextDirOffset, offset_base, IFDlength, displacement, SECTION_THUMBNAIL TSRMLS_CC)) {
3189: #ifdef EXIF_DEBUG
3190: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail size: 0x%04X", ImageInfo->Thumbnail.size);
3191: #endif
3192: if (ImageInfo->Thumbnail.filetype != IMAGE_FILETYPE_UNKNOWN
3193: && ImageInfo->Thumbnail.size
3194: && ImageInfo->Thumbnail.offset
3195: && ImageInfo->read_thumbnail
3196: ) {
3197: exif_thumbnail_extract(ImageInfo, offset_base, IFDlength TSRMLS_CC);
3198: }
3199: return TRUE;
3200: } else {
3201: return FALSE;
3202: }
3203: }
3204: return TRUE;
3205: }
3206: /* }}} */
3207:
3208: /* {{{ exif_process_TIFF_in_JPEG
3209: Process a TIFF header in a JPEG file
3210: */
3211: static void exif_process_TIFF_in_JPEG(image_info_type *ImageInfo, char *CharBuf, size_t length, size_t displacement TSRMLS_DC)
3212: {
3213: unsigned exif_value_2a, offset_of_ifd;
3214:
3215: /* set the thumbnail stuff to nothing so we can test to see if they get set up */
3216: if (memcmp(CharBuf, "II", 2) == 0) {
3217: ImageInfo->motorola_intel = 0;
3218: } else if (memcmp(CharBuf, "MM", 2) == 0) {
3219: ImageInfo->motorola_intel = 1;
3220: } else {
3221: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF alignment marker");
3222: return;
3223: }
3224:
3225: /* Check the next two values for correctness. */
3226: exif_value_2a = php_ifd_get16u(CharBuf+2, ImageInfo->motorola_intel);
3227: offset_of_ifd = php_ifd_get32u(CharBuf+4, ImageInfo->motorola_intel);
3228: if ( exif_value_2a != 0x2a || offset_of_ifd < 0x08) {
3229: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF start (1)");
3230: return;
3231: }
3232: if (offset_of_ifd > length) {
3233: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid IFD start");
3234: return;
3235: }
3236:
3237: ImageInfo->sections_found |= FOUND_IFD0;
3238: /* First directory starts at offset 8. Offsets starts at 0. */
3239: exif_process_IFD_in_JPEG(ImageInfo, CharBuf+offset_of_ifd, CharBuf, length/*-14*/, displacement, SECTION_IFD0 TSRMLS_CC);
3240:
3241: #ifdef EXIF_DEBUG
3242: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process TIFF in JPEG done");
3243: #endif
3244:
3245: /* Compute the CCD width, in milimeters. */
3246: if (ImageInfo->FocalplaneXRes != 0) {
3247: ImageInfo->CCDWidth = (float)(ImageInfo->ExifImageWidth * ImageInfo->FocalplaneUnits / ImageInfo->FocalplaneXRes);
3248: }
3249: }
3250: /* }}} */
3251:
3252: /* {{{ exif_process_APP1
3253: Process an JPEG APP1 block marker
3254: Describes all the drivel that most digital cameras include...
3255: */
3256: static void exif_process_APP1(image_info_type *ImageInfo, char *CharBuf, size_t length, size_t displacement TSRMLS_DC)
3257: {
3258: /* Check the APP1 for Exif Identifier Code */
3259: static const uchar ExifHeader[] = {0x45, 0x78, 0x69, 0x66, 0x00, 0x00};
3260: if (length <= 8 || memcmp(CharBuf+2, ExifHeader, 6)) {
3261: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Incorrect APP1 Exif Identifier Code");
3262: return;
3263: }
3264: exif_process_TIFF_in_JPEG(ImageInfo, CharBuf + 8, length - 8, displacement+8 TSRMLS_CC);
3265: #ifdef EXIF_DEBUG
3266: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process APP1/EXIF done");
3267: #endif
3268: }
3269: /* }}} */
3270:
3271: /* {{{ exif_process_APP12
3272: Process an JPEG APP12 block marker used by OLYMPUS
3273: */
3274: static void exif_process_APP12(image_info_type *ImageInfo, char *buffer, size_t length TSRMLS_DC)
3275: {
3276: size_t l1, l2=0;
3277:
3278: if ((l1 = php_strnlen(buffer+2, length-2)) > 0) {
3279: exif_iif_add_tag(ImageInfo, SECTION_APP12, "Company", TAG_NONE, TAG_FMT_STRING, l1, buffer+2 TSRMLS_CC);
3280: if (length > 2+l1+1) {
3281: l2 = php_strnlen(buffer+2+l1+1, length-2-l1+1);
3282: exif_iif_add_tag(ImageInfo, SECTION_APP12, "Info", TAG_NONE, TAG_FMT_STRING, l2, buffer+2+l1+1 TSRMLS_CC);
3283: }
3284: }
3285: #ifdef EXIF_DEBUG
3286: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process section APP12 with l1=%d, l2=%d done", l1, l2);
3287: #endif
3288: }
3289: /* }}} */
3290:
3291: /* {{{ exif_scan_JPEG_header
3292: * Parse the marker stream until SOS or EOI is seen; */
3293: static int exif_scan_JPEG_header(image_info_type *ImageInfo TSRMLS_DC)
3294: {
3295: int section, sn;
3296: int marker = 0, last_marker = M_PSEUDO, comment_correction=1;
3297: unsigned int ll, lh;
3298: uchar *Data;
3299: size_t fpos, size, got, itemlen;
3300: jpeg_sof_info sof_info;
3301:
3302: for(section=0;;section++) {
3303: #ifdef EXIF_DEBUG
3304: fpos = php_stream_tell(ImageInfo->infile);
3305: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Needing section %d @ 0x%08X", ImageInfo->file.count, fpos);
3306: #endif
3307:
3308: /* get marker byte, swallowing possible padding */
3309: /* some software does not count the length bytes of COM section */
3310: /* one company doing so is very much envolved in JPEG... so we accept too */
3311: if (last_marker==M_COM && comment_correction) {
3312: comment_correction = 2;
3313: }
3314: do {
3315: if ((marker = php_stream_getc(ImageInfo->infile)) == EOF) {
3316: EXIF_ERRLOG_CORRUPT(ImageInfo)
3317: return FALSE;
3318: }
3319: if (last_marker==M_COM && comment_correction>0) {
3320: if (marker!=0xFF) {
3321: marker = 0xff;
3322: comment_correction--;
3323: } else {
3324: last_marker = M_PSEUDO; /* stop skipping 0 for M_COM */
3325: }
3326: }
3327: } while (marker == 0xff);
3328: if (last_marker==M_COM && !comment_correction) {
3329: exif_error_docref("exif_read_data#error_mcom" EXIFERR_CC, ImageInfo, E_NOTICE, "Image has corrupt COM section: some software set wrong length information");
3330: }
3331: if (last_marker==M_COM && comment_correction)
3332: return M_EOI; /* ah illegal: char after COM section not 0xFF */
3333:
3334: fpos = php_stream_tell(ImageInfo->infile);
3335:
3336: if (marker == 0xff) {
3337: /* 0xff is legal padding, but if we get that many, something's wrong. */
3338: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "To many padding bytes");
3339: return FALSE;
3340: }
3341:
3342: /* Read the length of the section. */
3343: if ((lh = php_stream_getc(ImageInfo->infile)) == EOF) {
3344: EXIF_ERRLOG_CORRUPT(ImageInfo)
3345: return FALSE;
3346: }
3347: if ((ll = php_stream_getc(ImageInfo->infile)) == EOF) {
3348: EXIF_ERRLOG_CORRUPT(ImageInfo)
3349: return FALSE;
3350: }
3351:
3352: itemlen = (lh << 8) | ll;
3353:
3354: if (itemlen < 2) {
3355: #ifdef EXIF_DEBUG
3356: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s, Section length: 0x%02X%02X", EXIF_ERROR_CORRUPT, lh, ll);
3357: #else
3358: EXIF_ERRLOG_CORRUPT(ImageInfo)
3359: #endif
3360: return FALSE;
3361: }
3362:
3363: sn = exif_file_sections_add(ImageInfo, marker, itemlen+1, NULL);
3364: Data = ImageInfo->file.list[sn].data;
3365:
3366: /* Store first two pre-read bytes. */
3367: Data[0] = (uchar)lh;
3368: Data[1] = (uchar)ll;
3369:
3370: got = php_stream_read(ImageInfo->infile, (char*)(Data+2), itemlen-2); /* Read the whole section. */
3371: if (got != itemlen-2) {
3372: 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);
3373: return FALSE;
3374: }
3375:
3376: #ifdef EXIF_DEBUG
3377: 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);
3378: #endif
3379: switch(marker) {
3380: case M_SOS: /* stop before hitting compressed data */
3381: /* If reading entire image is requested, read the rest of the data. */
3382: if (ImageInfo->read_all) {
3383: /* Determine how much file is left. */
3384: fpos = php_stream_tell(ImageInfo->infile);
3385: size = ImageInfo->FileSize - fpos;
3386: sn = exif_file_sections_add(ImageInfo, M_PSEUDO, size, NULL);
3387: Data = ImageInfo->file.list[sn].data;
3388: got = php_stream_read(ImageInfo->infile, (char*)Data, size);
3389: if (got != size) {
3390: EXIF_ERRLOG_FILEEOF(ImageInfo)
3391: return FALSE;
3392: }
3393: }
3394: return TRUE;
3395:
3396: case M_EOI: /* in case it's a tables-only JPEG stream */
3397: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "No image in jpeg!");
3398: return (ImageInfo->sections_found&(~FOUND_COMPUTED)) ? TRUE : FALSE;
3399:
3400: case M_COM: /* Comment section */
3401: exif_process_COM(ImageInfo, (char *)Data, itemlen TSRMLS_CC);
3402: break;
3403:
3404: case M_EXIF:
3405: if (!(ImageInfo->sections_found&FOUND_IFD0)) {
3406: /*ImageInfo->sections_found |= FOUND_EXIF;*/
3407: /* Seen files from some 'U-lead' software with Vivitar scanner
3408: that uses marker 31 later in the file (no clue what for!) */
3409: exif_process_APP1(ImageInfo, (char *)Data, itemlen, fpos TSRMLS_CC);
3410: }
3411: break;
3412:
3413: case M_APP12:
3414: exif_process_APP12(ImageInfo, (char *)Data, itemlen TSRMLS_CC);
3415: break;
3416:
3417:
3418: case M_SOF0:
3419: case M_SOF1:
3420: case M_SOF2:
3421: case M_SOF3:
3422: case M_SOF5:
3423: case M_SOF6:
3424: case M_SOF7:
3425: case M_SOF9:
3426: case M_SOF10:
3427: case M_SOF11:
3428: case M_SOF13:
3429: case M_SOF14:
3430: case M_SOF15:
3431: exif_process_SOFn(Data, marker, &sof_info);
3432: ImageInfo->Width = sof_info.width;
3433: ImageInfo->Height = sof_info.height;
3434: if (sof_info.num_components == 3) {
3435: ImageInfo->IsColor = 1;
3436: } else {
3437: ImageInfo->IsColor = 0;
3438: }
3439: break;
3440: default:
3441: /* skip any other marker silently. */
3442: break;
3443: }
3444:
3445: /* keep track of last marker */
3446: last_marker = marker;
3447: }
3448: #ifdef EXIF_DEBUG
3449: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Done");
3450: #endif
3451: return TRUE;
3452: }
3453: /* }}} */
3454:
3455: /* {{{ exif_scan_thumbnail
3456: * scan JPEG in thumbnail (memory) */
3457: static int exif_scan_thumbnail(image_info_type *ImageInfo TSRMLS_DC)
3458: {
3459: uchar c, *data = (uchar*)ImageInfo->Thumbnail.data;
3460: int n, marker;
3461: size_t length=2, pos=0;
3462: jpeg_sof_info sof_info;
3463:
3464: if (!data) {
3465: return FALSE; /* nothing to do here */
3466: }
3467: if (memcmp(data, "\xFF\xD8\xFF", 3)) {
3468: if (!ImageInfo->Thumbnail.width && !ImageInfo->Thumbnail.height) {
3469: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Thumbnail is not a JPEG image");
3470: }
3471: return FALSE;
3472: }
3473: for (;;) {
3474: pos += length;
3475: if (pos>=ImageInfo->Thumbnail.size)
3476: return FALSE;
3477: c = data[pos++];
3478: if (pos>=ImageInfo->Thumbnail.size)
3479: return FALSE;
3480: if (c != 0xFF) {
3481: return FALSE;
3482: }
3483: n = 8;
3484: while ((c = data[pos++]) == 0xFF && n--) {
3485: if (pos+3>=ImageInfo->Thumbnail.size)
3486: return FALSE;
3487: /* +3 = pos++ of next check when reaching marker + 2 bytes for length */
3488: }
3489: if (c == 0xFF)
3490: return FALSE;
3491: marker = c;
3492: length = php_jpg_get16(data+pos);
3493: if (pos+length>=ImageInfo->Thumbnail.size) {
3494: return FALSE;
3495: }
3496: #ifdef EXIF_DEBUG
3497: 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);
3498: #endif
3499: switch (marker) {
3500: case M_SOF0:
3501: case M_SOF1:
3502: case M_SOF2:
3503: case M_SOF3:
3504: case M_SOF5:
3505: case M_SOF6:
3506: case M_SOF7:
3507: case M_SOF9:
3508: case M_SOF10:
3509: case M_SOF11:
3510: case M_SOF13:
3511: case M_SOF14:
3512: case M_SOF15:
3513: /* handle SOFn block */
3514: exif_process_SOFn(data+pos, marker, &sof_info);
3515: ImageInfo->Thumbnail.height = sof_info.height;
3516: ImageInfo->Thumbnail.width = sof_info.width;
3517: #ifdef EXIF_DEBUG
3518: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: size: %d * %d", sof_info.width, sof_info.height);
3519: #endif
3520: return TRUE;
3521:
3522: case M_SOS:
3523: case M_EOI:
3524: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Could not compute size of thumbnail");
3525: return FALSE;
3526: break;
3527:
3528: default:
3529: /* just skip */
3530: break;
3531: }
3532: }
3533:
3534: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Could not compute size of thumbnail");
3535: return FALSE;
3536: }
3537: /* }}} */
3538:
3539: /* {{{ exif_process_IFD_in_TIFF
3540: * Parse the TIFF header; */
3541: static int exif_process_IFD_in_TIFF(image_info_type *ImageInfo, size_t dir_offset, int section_index TSRMLS_DC)
3542: {
3543: int i, sn, num_entries, sub_section_index = 0;
3544: unsigned char *dir_entry;
3545: char tagname[64];
3546: size_t ifd_size, dir_size, entry_offset, next_offset, entry_length, entry_value=0, fgot;
3547: int entry_tag , entry_type;
3548: tag_table_type tag_table = exif_get_tag_table(section_index);
3549:
3550: if (ImageInfo->ifd_nesting_level > MAX_IFD_NESTING_LEVEL) {
3551: return FALSE;
3552: }
3553:
3554: if (ImageInfo->FileSize >= dir_offset+2) {
3555: sn = exif_file_sections_add(ImageInfo, M_PSEUDO, 2, NULL);
3556: #ifdef EXIF_DEBUG
3557: 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);
3558: #endif
3559: php_stream_seek(ImageInfo->infile, dir_offset, SEEK_SET); /* we do not know the order of sections */
3560: php_stream_read(ImageInfo->infile, (char*)ImageInfo->file.list[sn].data, 2);
3561: num_entries = php_ifd_get16u(ImageInfo->file.list[sn].data, ImageInfo->motorola_intel);
3562: dir_size = 2/*num dir entries*/ +12/*length of entry*/*num_entries +4/* offset to next ifd (points to thumbnail or NULL)*/;
3563: if (ImageInfo->FileSize >= dir_offset+dir_size) {
3564: #ifdef EXIF_DEBUG
3565: 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);
3566: #endif
3567: if (exif_file_sections_realloc(ImageInfo, sn, dir_size TSRMLS_CC)) {
3568: return FALSE;
3569: }
3570: php_stream_read(ImageInfo->infile, (char*)(ImageInfo->file.list[sn].data+2), dir_size-2);
3571: /*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Dump: %s", exif_char_dump(ImageInfo->file.list[sn].data, dir_size, 0));*/
3572: next_offset = php_ifd_get32u(ImageInfo->file.list[sn].data + dir_size - 4, ImageInfo->motorola_intel);
3573: #ifdef EXIF_DEBUG
3574: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF done, next offset x%04X", next_offset);
3575: #endif
3576: /* now we have the directory we can look how long it should be */
3577: ifd_size = dir_size;
3578: for(i=0;i<num_entries;i++) {
3579: dir_entry = ImageInfo->file.list[sn].data+2+i*12;
3580: entry_tag = php_ifd_get16u(dir_entry+0, ImageInfo->motorola_intel);
3581: entry_type = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
3582: if (entry_type > NUM_FORMATS) {
3583: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF: tag(0x%04X,%12s): Illegal format code 0x%04X, switching to BYTE", entry_tag, exif_get_tagname(entry_tag, tagname, -12, tag_table TSRMLS_CC), entry_type);
3584: /* Since this is repeated in exif_process_IFD_TAG make it a notice here */
3585: /* and make it a warning in the exif_process_IFD_TAG which is called */
3586: /* elsewhere. */
3587: entry_type = TAG_FMT_BYTE;
3588: /*The next line would break the image on writeback: */
3589: /* php_ifd_set16u(dir_entry+2, entry_type, ImageInfo->motorola_intel);*/
3590: }
3591: entry_length = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel) * php_tiff_bytes_per_format[entry_type];
3592: if (entry_length <= 4) {
3593: switch(entry_type) {
3594: case TAG_FMT_USHORT:
3595: entry_value = php_ifd_get16u(dir_entry+8, ImageInfo->motorola_intel);
3596: break;
3597: case TAG_FMT_SSHORT:
3598: entry_value = php_ifd_get16s(dir_entry+8, ImageInfo->motorola_intel);
3599: break;
3600: case TAG_FMT_ULONG:
3601: entry_value = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
3602: break;
3603: case TAG_FMT_SLONG:
3604: entry_value = php_ifd_get32s(dir_entry+8, ImageInfo->motorola_intel);
3605: break;
3606: }
3607: switch(entry_tag) {
3608: case TAG_IMAGEWIDTH:
3609: case TAG_COMP_IMAGE_WIDTH:
3610: ImageInfo->Width = entry_value;
3611: break;
3612: case TAG_IMAGEHEIGHT:
3613: case TAG_COMP_IMAGE_HEIGHT:
3614: ImageInfo->Height = entry_value;
3615: break;
3616: case TAG_PHOTOMETRIC_INTERPRETATION:
3617: switch (entry_value) {
3618: case PMI_BLACK_IS_ZERO:
3619: case PMI_WHITE_IS_ZERO:
3620: case PMI_TRANSPARENCY_MASK:
3621: ImageInfo->IsColor = 0;
3622: break;
3623: case PMI_RGB:
3624: case PMI_PALETTE_COLOR:
3625: case PMI_SEPARATED:
3626: case PMI_YCBCR:
3627: case PMI_CIELAB:
3628: ImageInfo->IsColor = 1;
3629: break;
3630: }
3631: break;
3632: }
3633: } else {
3634: entry_offset = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
3635: /* if entry needs expading ifd cache and entry is at end of current ifd cache. */
3636: /* otherwise there may be huge holes between two entries */
3637: if (entry_offset + entry_length > dir_offset + ifd_size
3638: && entry_offset == dir_offset + ifd_size) {
3639: ifd_size = entry_offset + entry_length - dir_offset;
3640: #ifdef EXIF_DEBUG
3641: 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);
3642: #endif
3643: }
3644: }
3645: }
3646: if (ImageInfo->FileSize >= dir_offset + ImageInfo->file.list[sn].size) {
3647: if (ifd_size > dir_size) {
3648: if (dir_offset + ifd_size > ImageInfo->FileSize) {
3649: 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);
3650: return FALSE;
3651: }
3652: if (exif_file_sections_realloc(ImageInfo, sn, ifd_size TSRMLS_CC)) {
3653: return FALSE;
3654: }
3655: /* read values not stored in directory itself */
3656: #ifdef EXIF_DEBUG
3657: 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);
3658: #endif
3659: php_stream_read(ImageInfo->infile, (char*)(ImageInfo->file.list[sn].data+dir_size), ifd_size-dir_size);
3660: #ifdef EXIF_DEBUG
3661: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF, done");
3662: #endif
3663: }
3664: /* now process the tags */
3665: for(i=0;i<num_entries;i++) {
3666: dir_entry = ImageInfo->file.list[sn].data+2+i*12;
3667: entry_tag = php_ifd_get16u(dir_entry+0, ImageInfo->motorola_intel);
3668: entry_type = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
3669: /*entry_length = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel);*/
3670: if (entry_tag == TAG_EXIF_IFD_POINTER ||
3671: entry_tag == TAG_INTEROP_IFD_POINTER ||
3672: entry_tag == TAG_GPS_IFD_POINTER ||
3673: entry_tag == TAG_SUB_IFD
3674: ) {
3675: switch(entry_tag) {
3676: case TAG_EXIF_IFD_POINTER:
3677: ImageInfo->sections_found |= FOUND_EXIF;
3678: sub_section_index = SECTION_EXIF;
3679: break;
3680: case TAG_GPS_IFD_POINTER:
3681: ImageInfo->sections_found |= FOUND_GPS;
3682: sub_section_index = SECTION_GPS;
3683: break;
3684: case TAG_INTEROP_IFD_POINTER:
3685: ImageInfo->sections_found |= FOUND_INTEROP;
3686: sub_section_index = SECTION_INTEROP;
3687: break;
3688: case TAG_SUB_IFD:
3689: ImageInfo->sections_found |= FOUND_THUMBNAIL;
3690: sub_section_index = SECTION_THUMBNAIL;
3691: break;
3692: }
3693: entry_offset = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
3694: #ifdef EXIF_DEBUG
3695: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Next IFD: %s @x%04X", exif_get_sectionname(sub_section_index), entry_offset);
3696: #endif
3697: ImageInfo->ifd_nesting_level++;
3698: exif_process_IFD_in_TIFF(ImageInfo, entry_offset, sub_section_index TSRMLS_CC);
3699: if (section_index!=SECTION_THUMBNAIL && entry_tag==TAG_SUB_IFD) {
3700: if (ImageInfo->Thumbnail.filetype != IMAGE_FILETYPE_UNKNOWN
3701: && ImageInfo->Thumbnail.size
3702: && ImageInfo->Thumbnail.offset
3703: && ImageInfo->read_thumbnail
3704: ) {
3705: #ifdef EXIF_DEBUG
3706: 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);
3707: #endif
3708: if (!ImageInfo->Thumbnail.data) {
3709: ImageInfo->Thumbnail.data = safe_emalloc(ImageInfo->Thumbnail.size, 1, 0);
3710: php_stream_seek(ImageInfo->infile, ImageInfo->Thumbnail.offset, SEEK_SET);
3711: fgot = php_stream_read(ImageInfo->infile, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
3712: if (fgot < ImageInfo->Thumbnail.size) {
3713: EXIF_ERRLOG_THUMBEOF(ImageInfo)
3714: }
3715: exif_thumbnail_build(ImageInfo TSRMLS_CC);
3716: }
3717: }
3718: }
3719: #ifdef EXIF_DEBUG
3720: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Next IFD: %s done", exif_get_sectionname(sub_section_index));
3721: #endif
3722: } else {
3723: if (!exif_process_IFD_TAG(ImageInfo, (char*)dir_entry,
3724: (char*)(ImageInfo->file.list[sn].data-dir_offset),
3725: ifd_size, 0, section_index, 0, tag_table TSRMLS_CC)) {
3726: return FALSE;
3727: }
3728: }
3729: }
3730: /* If we had a thumbnail in a SUB_IFD we have ANOTHER image in NEXT IFD */
3731: if (next_offset && section_index != SECTION_THUMBNAIL) {
3732: /* this should be a thumbnail IFD */
3733: /* the thumbnail itself is stored at Tag=StripOffsets */
3734: #ifdef EXIF_DEBUG
3735: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read next IFD (THUMBNAIL) at x%04X", next_offset);
3736: #endif
3737: ImageInfo->ifd_nesting_level++;
3738: exif_process_IFD_in_TIFF(ImageInfo, next_offset, SECTION_THUMBNAIL TSRMLS_CC);
3739: #ifdef EXIF_DEBUG
3740: 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);
3741: #endif
3742: if (!ImageInfo->Thumbnail.data && ImageInfo->Thumbnail.offset && ImageInfo->Thumbnail.size && ImageInfo->read_thumbnail) {
3743: ImageInfo->Thumbnail.data = safe_emalloc(ImageInfo->Thumbnail.size, 1, 0);
3744: php_stream_seek(ImageInfo->infile, ImageInfo->Thumbnail.offset, SEEK_SET);
3745: fgot = php_stream_read(ImageInfo->infile, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
3746: if (fgot < ImageInfo->Thumbnail.size) {
3747: EXIF_ERRLOG_THUMBEOF(ImageInfo)
3748: }
3749: exif_thumbnail_build(ImageInfo TSRMLS_CC);
3750: }
3751: #ifdef EXIF_DEBUG
3752: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read next IFD (THUMBNAIL) done");
3753: #endif
3754: }
3755: return TRUE;
3756: } else {
3757: 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);
3758: return FALSE;
3759: }
3760: } else {
3761: 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);
3762: return FALSE;
3763: }
3764: } else {
3765: 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);
3766: return FALSE;
3767: }
3768: }
3769: /* }}} */
3770:
3771: /* {{{ exif_scan_FILE_header
3772: * Parse the marker stream until SOS or EOI is seen; */
3773: static int exif_scan_FILE_header(image_info_type *ImageInfo TSRMLS_DC)
3774: {
3775: unsigned char file_header[8];
3776: int ret = FALSE;
3777:
3778: ImageInfo->FileType = IMAGE_FILETYPE_UNKNOWN;
3779:
3780: if (ImageInfo->FileSize >= 2) {
3781: php_stream_seek(ImageInfo->infile, 0, SEEK_SET);
3782: if (php_stream_read(ImageInfo->infile, (char*)file_header, 2) != 2) {
3783: return FALSE;
3784: }
3785: if ((file_header[0]==0xff) && (file_header[1]==M_SOI)) {
3786: ImageInfo->FileType = IMAGE_FILETYPE_JPEG;
3787: if (exif_scan_JPEG_header(ImageInfo TSRMLS_CC)) {
3788: ret = TRUE;
3789: } else {
3790: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid JPEG file");
3791: }
3792: } else if (ImageInfo->FileSize >= 8) {
3793: if (php_stream_read(ImageInfo->infile, (char*)(file_header+2), 6) != 6) {
3794: return FALSE;
3795: }
3796: if (!memcmp(file_header, "II\x2A\x00", 4)) {
3797: ImageInfo->FileType = IMAGE_FILETYPE_TIFF_II;
3798: ImageInfo->motorola_intel = 0;
3799: #ifdef EXIF_DEBUG
3800: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "File has TIFF/II format");
3801: #endif
3802: ImageInfo->sections_found |= FOUND_IFD0;
3803: if (exif_process_IFD_in_TIFF(ImageInfo,
3804: php_ifd_get32u(file_header + 4, ImageInfo->motorola_intel),
3805: SECTION_IFD0 TSRMLS_CC)) {
3806: ret = TRUE;
3807: } else {
3808: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF file");
3809: }
3810: } else if (!memcmp(file_header, "MM\x00\x2a", 4)) {
3811: ImageInfo->FileType = IMAGE_FILETYPE_TIFF_MM;
3812: ImageInfo->motorola_intel = 1;
3813: #ifdef EXIF_DEBUG
3814: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "File has TIFF/MM format");
3815: #endif
3816: ImageInfo->sections_found |= FOUND_IFD0;
3817: if (exif_process_IFD_in_TIFF(ImageInfo,
3818: php_ifd_get32u(file_header + 4, ImageInfo->motorola_intel),
3819: SECTION_IFD0 TSRMLS_CC)) {
3820: ret = TRUE;
3821: } else {
3822: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF file");
3823: }
3824: } else {
3825: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "File not supported");
3826: return FALSE;
3827: }
3828: }
3829: } else {
3830: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "File too small (%d)", ImageInfo->FileSize);
3831: }
3832: return ret;
3833: }
3834: /* }}} */
3835:
3836: /* {{{ exif_discard_imageinfo
3837: Discard data scanned by exif_read_file.
3838: */
3839: static int exif_discard_imageinfo(image_info_type *ImageInfo)
3840: {
3841: int i;
3842:
3843: EFREE_IF(ImageInfo->FileName);
3844: EFREE_IF(ImageInfo->UserComment);
3845: EFREE_IF(ImageInfo->UserCommentEncoding);
3846: EFREE_IF(ImageInfo->Copyright);
3847: EFREE_IF(ImageInfo->CopyrightPhotographer);
3848: EFREE_IF(ImageInfo->CopyrightEditor);
3849: EFREE_IF(ImageInfo->Thumbnail.data);
3850: EFREE_IF(ImageInfo->encode_unicode);
3851: EFREE_IF(ImageInfo->decode_unicode_be);
3852: EFREE_IF(ImageInfo->decode_unicode_le);
3853: EFREE_IF(ImageInfo->encode_jis);
3854: EFREE_IF(ImageInfo->decode_jis_be);
3855: EFREE_IF(ImageInfo->decode_jis_le);
3856: EFREE_IF(ImageInfo->make);
3857: EFREE_IF(ImageInfo->model);
3858: for (i=0; i<ImageInfo->xp_fields.count; i++) {
3859: EFREE_IF(ImageInfo->xp_fields.list[i].value);
3860: }
3861: EFREE_IF(ImageInfo->xp_fields.list);
3862: for (i=0; i<SECTION_COUNT; i++) {
3863: exif_iif_free(ImageInfo, i);
3864: }
3865: exif_file_sections_free(ImageInfo);
3866: memset(ImageInfo, 0, sizeof(*ImageInfo));
3867: return TRUE;
3868: }
3869: /* }}} */
3870:
3871: /* {{{ exif_read_file
3872: */
3873: static int exif_read_file(image_info_type *ImageInfo, char *FileName, int read_thumbnail, int read_all TSRMLS_DC)
3874: {
3875: int ret;
3876: struct stat st;
3877:
3878: /* Start with an empty image information structure. */
3879: memset(ImageInfo, 0, sizeof(*ImageInfo));
3880:
3881: ImageInfo->motorola_intel = -1; /* flag as unknown */
3882:
3883: ImageInfo->infile = php_stream_open_wrapper(FileName, "rb", STREAM_MUST_SEEK|IGNORE_PATH|ENFORCE_SAFE_MODE, NULL);
3884: if (!ImageInfo->infile) {
3885: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Unable to open file");
3886: return FALSE;
3887: }
3888:
3889: if (php_stream_is(ImageInfo->infile, PHP_STREAM_IS_STDIO)) {
3890: if (VCWD_STAT(FileName, &st) >= 0) {
3891: if ((st.st_mode & S_IFMT) != S_IFREG) {
3892: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Not a file");
3893: php_stream_close(ImageInfo->infile);
3894: return FALSE;
3895: }
3896:
3897: /* Store file date/time. */
3898: ImageInfo->FileDateTime = st.st_mtime;
3899: ImageInfo->FileSize = st.st_size;
3900: /*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Opened stream is file: %d", ImageInfo->FileSize);*/
3901: }
3902: } else {
3903: if (!ImageInfo->FileSize) {
3904: php_stream_seek(ImageInfo->infile, 0, SEEK_END);
3905: ImageInfo->FileSize = php_stream_tell(ImageInfo->infile);
3906: php_stream_seek(ImageInfo->infile, 0, SEEK_SET);
3907: }
3908: }
3909:
3910: php_basename(FileName, strlen(FileName), NULL, 0, &(ImageInfo->FileName), NULL TSRMLS_CC);
3911: ImageInfo->read_thumbnail = read_thumbnail;
3912: ImageInfo->read_all = read_all;
3913: ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_UNKNOWN;
3914:
3915: ImageInfo->encode_unicode = safe_estrdup(EXIF_G(encode_unicode));
3916: ImageInfo->decode_unicode_be = safe_estrdup(EXIF_G(decode_unicode_be));
3917: ImageInfo->decode_unicode_le = safe_estrdup(EXIF_G(decode_unicode_le));
3918: ImageInfo->encode_jis = safe_estrdup(EXIF_G(encode_jis));
3919: ImageInfo->decode_jis_be = safe_estrdup(EXIF_G(decode_jis_be));
3920: ImageInfo->decode_jis_le = safe_estrdup(EXIF_G(decode_jis_le));
3921:
3922:
3923: ImageInfo->ifd_nesting_level = 0;
3924:
3925: /* Scan the JPEG headers. */
3926: ret = exif_scan_FILE_header(ImageInfo TSRMLS_CC);
3927:
3928: php_stream_close(ImageInfo->infile);
3929: return ret;
3930: }
3931: /* }}} */
3932:
3933: /* {{{ proto array exif_read_data(string filename [, sections_needed [, sub_arrays[, read_thumbnail]]])
3934: Reads header data from the JPEG/TIFF image filename and optionally reads the internal thumbnails */
3935: PHP_FUNCTION(exif_read_data)
3936: {
3937: char *p_name, *p_sections_needed = NULL;
3938: int p_name_len, p_sections_needed_len = 0;
3939: zend_bool sub_arrays=0, read_thumbnail=0, read_all=0;
3940:
3941: int i, ret, sections_needed=0;
3942: image_info_type ImageInfo;
3943: char tmp[64], *sections_str, *s;
3944:
3945: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|sbb", &p_name, &p_name_len, &p_sections_needed, &p_sections_needed_len, &sub_arrays, &read_thumbnail) == FAILURE) {
3946: return;
3947: }
3948:
3949: memset(&ImageInfo, 0, sizeof(ImageInfo));
3950:
3951: if (p_sections_needed) {
3952: spprintf(§ions_str, 0, ",%s,", p_sections_needed);
3953: /* sections_str DOES start with , and SPACES are NOT allowed in names */
3954: s = sections_str;
3955: while (*++s) {
3956: if (*s == ' ') {
3957: *s = ',';
3958: }
3959: }
3960:
3961: for (i = 0; i < SECTION_COUNT; i++) {
3962: snprintf(tmp, sizeof(tmp), ",%s,", exif_get_sectionname(i));
3963: if (strstr(sections_str, tmp)) {
3964: sections_needed |= 1<<i;
3965: }
3966: }
3967: EFREE_IF(sections_str);
3968: /* now see what we need */
3969: #ifdef EXIF_DEBUG
3970: sections_str = exif_get_sectionlist(sections_needed TSRMLS_CC);
3971: if (!sections_str) {
3972: RETURN_FALSE;
3973: }
3974: exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Sections needed: %s", sections_str[0] ? sections_str : "None");
3975: EFREE_IF(sections_str);
3976: #endif
3977: }
3978:
3979: ret = exif_read_file(&ImageInfo, p_name, read_thumbnail, read_all TSRMLS_CC);
3980: sections_str = exif_get_sectionlist(ImageInfo.sections_found TSRMLS_CC);
3981:
3982: #ifdef EXIF_DEBUG
3983: if (sections_str)
3984: exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Sections found: %s", sections_str[0] ? sections_str : "None");
3985: #endif
3986:
3987: ImageInfo.sections_found |= FOUND_COMPUTED|FOUND_FILE;/* do not inform about in debug*/
3988:
3989: if (ret == FALSE || (sections_needed && !(sections_needed&ImageInfo.sections_found))) {
3990: /* array_init must be checked at last! otherwise the array must be freed if a later test fails. */
3991: exif_discard_imageinfo(&ImageInfo);
3992: EFREE_IF(sections_str);
3993: RETURN_FALSE;
3994: }
3995:
3996: array_init(return_value);
3997:
3998: #ifdef EXIF_DEBUG
3999: exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Generate section FILE");
4000: #endif
4001:
4002: /* now we can add our information */
4003: exif_iif_add_str(&ImageInfo, SECTION_FILE, "FileName", ImageInfo.FileName TSRMLS_CC);
4004: exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileDateTime", ImageInfo.FileDateTime TSRMLS_CC);
4005: exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileSize", ImageInfo.FileSize TSRMLS_CC);
4006: exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileType", ImageInfo.FileType TSRMLS_CC);
4007: exif_iif_add_str(&ImageInfo, SECTION_FILE, "MimeType", (char*)php_image_type_to_mime_type(ImageInfo.FileType) TSRMLS_CC);
4008: exif_iif_add_str(&ImageInfo, SECTION_FILE, "SectionsFound", sections_str ? sections_str : "NONE" TSRMLS_CC);
4009:
4010: #ifdef EXIF_DEBUG
4011: exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Generate section COMPUTED");
4012: #endif
4013:
4014: if (ImageInfo.Width>0 && ImageInfo.Height>0) {
4015: exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "html" TSRMLS_CC, "width=\"%d\" height=\"%d\"", ImageInfo.Width, ImageInfo.Height);
4016: exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Height", ImageInfo.Height TSRMLS_CC);
4017: exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Width", ImageInfo.Width TSRMLS_CC);
4018: }
4019: exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "IsColor", ImageInfo.IsColor TSRMLS_CC);
4020: if (ImageInfo.motorola_intel != -1) {
4021: exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "ByteOrderMotorola", ImageInfo.motorola_intel TSRMLS_CC);
4022: }
4023: if (ImageInfo.FocalLength) {
4024: exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "FocalLength" TSRMLS_CC, "%4.1Fmm", ImageInfo.FocalLength);
4025: if(ImageInfo.CCDWidth) {
4026: exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "35mmFocalLength" TSRMLS_CC, "%dmm", (int)(ImageInfo.FocalLength/ImageInfo.CCDWidth*35+0.5));
4027: }
4028: }
4029: if(ImageInfo.CCDWidth) {
4030: exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "CCDWidth" TSRMLS_CC, "%dmm", (int)ImageInfo.CCDWidth);
4031: }
4032: if(ImageInfo.ExposureTime>0) {
4033: if(ImageInfo.ExposureTime <= 0.5) {
4034: exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ExposureTime" TSRMLS_CC, "%0.3F s (1/%d)", ImageInfo.ExposureTime, (int)(0.5 + 1/ImageInfo.ExposureTime));
4035: } else {
4036: exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ExposureTime" TSRMLS_CC, "%0.3F s", ImageInfo.ExposureTime);
4037: }
4038: }
4039: if(ImageInfo.ApertureFNumber) {
4040: exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ApertureFNumber" TSRMLS_CC, "f/%.1F", ImageInfo.ApertureFNumber);
4041: }
4042: if(ImageInfo.Distance) {
4043: if(ImageInfo.Distance<0) {
4044: exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "FocusDistance", "Infinite" TSRMLS_CC);
4045: } else {
4046: exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "FocusDistance" TSRMLS_CC, "%0.2Fm", ImageInfo.Distance);
4047: }
4048: }
4049: if (ImageInfo.UserComment) {
4050: exif_iif_add_buffer(&ImageInfo, SECTION_COMPUTED, "UserComment", ImageInfo.UserCommentLength, ImageInfo.UserComment TSRMLS_CC);
4051: if (ImageInfo.UserCommentEncoding && strlen(ImageInfo.UserCommentEncoding)) {
4052: exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "UserCommentEncoding", ImageInfo.UserCommentEncoding TSRMLS_CC);
4053: }
4054: }
4055:
4056: exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright", ImageInfo.Copyright TSRMLS_CC);
4057: exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright.Photographer", ImageInfo.CopyrightPhotographer TSRMLS_CC);
4058: exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright.Editor", ImageInfo.CopyrightEditor TSRMLS_CC);
4059:
4060: for (i=0; i<ImageInfo.xp_fields.count; i++) {
4061: exif_iif_add_str(&ImageInfo, SECTION_WINXP, exif_get_tagname(ImageInfo.xp_fields.list[i].tag, NULL, 0, exif_get_tag_table(SECTION_WINXP) TSRMLS_CC), ImageInfo.xp_fields.list[i].value TSRMLS_CC);
4062: }
4063: if (ImageInfo.Thumbnail.size) {
4064: if (read_thumbnail) {
4065: /* not exif_iif_add_str : this is a buffer */
4066: exif_iif_add_tag(&ImageInfo, SECTION_THUMBNAIL, "THUMBNAIL", TAG_NONE, TAG_FMT_UNDEFINED, ImageInfo.Thumbnail.size, ImageInfo.Thumbnail.data TSRMLS_CC);
4067: }
4068: if (!ImageInfo.Thumbnail.width || !ImageInfo.Thumbnail.height) {
4069: /* try to evaluate if thumbnail data is present */
4070: exif_scan_thumbnail(&ImageInfo TSRMLS_CC);
4071: }
4072: exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.FileType", ImageInfo.Thumbnail.filetype TSRMLS_CC);
4073: exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Thumbnail.MimeType", (char*)php_image_type_to_mime_type(ImageInfo.Thumbnail.filetype) TSRMLS_CC);
4074: }
4075: if (ImageInfo.Thumbnail.width && ImageInfo.Thumbnail.height) {
4076: exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.Height", ImageInfo.Thumbnail.height TSRMLS_CC);
4077: exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.Width", ImageInfo.Thumbnail.width TSRMLS_CC);
4078: }
4079: EFREE_IF(sections_str);
4080:
4081: #ifdef EXIF_DEBUG
4082: exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Adding image infos");
4083: #endif
4084:
4085: add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_FILE TSRMLS_CC);
4086: add_assoc_image_info(return_value, 1, &ImageInfo, SECTION_COMPUTED TSRMLS_CC);
4087: add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_ANY_TAG TSRMLS_CC);
4088: add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_IFD0 TSRMLS_CC);
4089: add_assoc_image_info(return_value, 1, &ImageInfo, SECTION_THUMBNAIL TSRMLS_CC);
4090: add_assoc_image_info(return_value, 1, &ImageInfo, SECTION_COMMENT TSRMLS_CC);
4091: add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_EXIF TSRMLS_CC);
4092: add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_GPS TSRMLS_CC);
4093: add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_INTEROP TSRMLS_CC);
4094: add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_FPIX TSRMLS_CC);
4095: add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_APP12 TSRMLS_CC);
4096: add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_WINXP TSRMLS_CC);
4097: add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_MAKERNOTE TSRMLS_CC);
4098:
4099: #ifdef EXIF_DEBUG
4100: exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Discarding info");
4101: #endif
4102:
4103: exif_discard_imageinfo(&ImageInfo);
4104:
4105: #ifdef EXIF_DEBUG
4106: php_error_docref1(NULL TSRMLS_CC, Z_STRVAL_PP(p_name), E_NOTICE, "done");
4107: #endif
4108: }
4109: /* }}} */
4110:
4111: /* {{{ proto string exif_thumbnail(string filename [, &width, &height [, &imagetype]])
4112: Reads the embedded thumbnail */
4113: PHP_FUNCTION(exif_thumbnail)
4114: {
4115: zval *p_width = 0, *p_height = 0, *p_imagetype = 0;
4116: char *p_name;
4117: int p_name_len, ret, arg_c = ZEND_NUM_ARGS();
4118: image_info_type ImageInfo;
4119:
4120: memset(&ImageInfo, 0, sizeof(ImageInfo));
4121:
4122: if (arg_c!=1 && arg_c!=3 && arg_c!=4) {
4123: WRONG_PARAM_COUNT;
4124: }
4125:
4126: if (zend_parse_parameters(arg_c TSRMLS_CC, "s|z/z/z/", &p_name, &p_name_len, &p_width, &p_height, &p_imagetype) == FAILURE) {
4127: return;
4128: }
4129:
4130: ret = exif_read_file(&ImageInfo, p_name, 1, 0 TSRMLS_CC);
4131: if (ret==FALSE) {
4132: exif_discard_imageinfo(&ImageInfo);
4133: RETURN_FALSE;
4134: }
4135:
4136: #ifdef EXIF_DEBUG
4137: 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);
4138: #endif
4139: if (!ImageInfo.Thumbnail.data || !ImageInfo.Thumbnail.size) {
4140: exif_discard_imageinfo(&ImageInfo);
4141: RETURN_FALSE;
4142: }
4143:
4144: #ifdef EXIF_DEBUG
4145: exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Returning thumbnail(%d)", ImageInfo.Thumbnail.size);
4146: #endif
4147:
4148: ZVAL_STRINGL(return_value, ImageInfo.Thumbnail.data, ImageInfo.Thumbnail.size, 1);
4149: if (arg_c >= 3) {
4150: if (!ImageInfo.Thumbnail.width || !ImageInfo.Thumbnail.height) {
4151: exif_scan_thumbnail(&ImageInfo TSRMLS_CC);
4152: }
4153: zval_dtor(p_width);
4154: zval_dtor(p_height);
4155: ZVAL_LONG(p_width, ImageInfo.Thumbnail.width);
4156: ZVAL_LONG(p_height, ImageInfo.Thumbnail.height);
4157: }
4158: if (arg_c >= 4) {
4159: zval_dtor(p_imagetype);
4160: ZVAL_LONG(p_imagetype, ImageInfo.Thumbnail.filetype);
4161: }
4162:
4163: #ifdef EXIF_DEBUG
4164: exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Discarding info");
4165: #endif
4166:
4167: exif_discard_imageinfo(&ImageInfo);
4168:
4169: #ifdef EXIF_DEBUG
4170: php_error_docref1(NULL TSRMLS_CC, p_name, E_NOTICE, "Done");
4171: #endif
4172: }
4173: /* }}} */
4174:
4175: /* {{{ proto int exif_imagetype(string imagefile)
4176: Get the type of an image */
4177: PHP_FUNCTION(exif_imagetype)
4178: {
4179: char *imagefile;
4180: int imagefile_len;
4181: php_stream * stream;
4182: int itype = 0;
4183:
4184: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &imagefile, &imagefile_len) == FAILURE) {
4185: return;
4186: }
4187:
4188: stream = php_stream_open_wrapper(imagefile, "rb", IGNORE_PATH|ENFORCE_SAFE_MODE|REPORT_ERRORS, NULL);
4189:
4190: if (stream == NULL) {
4191: RETURN_FALSE;
4192: }
4193:
4194: itype = php_getimagetype(stream, NULL TSRMLS_CC);
4195:
4196: php_stream_close(stream);
4197:
4198: if (itype == IMAGE_FILETYPE_UNKNOWN) {
4199: RETURN_FALSE;
4200: } else {
4201: ZVAL_LONG(return_value, itype);
4202: }
4203: }
4204: /* }}} */
4205:
4206: #endif
4207:
4208: /*
4209: * Local variables:
4210: * tab-width: 4
4211: * c-basic-offset: 4
4212: * End:
4213: * vim600: sw=4 ts=4 tw=78 fdm=marker
4214: * vim<600: sw=4 ts=4 tw=78
4215: */
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