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source: extensions/charlies_content/getid3/getid3/module.misc.iso.php @ 3318

Last change on this file since 3318 was 3318, checked in by vdigital, 15 years ago
+ Add Charlies' content to depository
Property svn:eol-style set to `LF` Property svn:keywords set to `Author Date Id Revision`
File size: 23.5 KB

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1	<?php
2	// +----------------------------------------------------------------------+
3	// \| PHP version 5 \|
4	// +----------------------------------------------------------------------+
5	// \| Copyright (c) 2002-2006 James Heinrich, Allan Hansen \|
6	// +----------------------------------------------------------------------+
7	// \| This source file is subject to version 2 of the GPL license, \|
8	// \| that is bundled with this package in the file license.txt and is \|
9	// \| available through the world-wide-web at the following url: \|
10	// \| http://www.gnu.org/copyleft/gpl.html \|
11	// +----------------------------------------------------------------------+
12	// \| getID3() - http://getid3.sourceforge.net or http://www.getid3.org \|
13	// +----------------------------------------------------------------------+
14	// \| Authors: James Heinrich <infoØgetid3*org> \|
15	// \| Allan Hansen <ahØartemis*dk> \|
16	// +----------------------------------------------------------------------+
17	// \| module.misc.iso.php \|
18	// \| Module for analyzing ISO files \|
19	// \| dependencies: NONE \|
20	// +----------------------------------------------------------------------+
21	//
22	// $Id: module.misc.iso.php 3318 2009-05-20 21:54:10Z vdigital $
23
24
25
26	class getid3_iso extends getid3_handler
27	{
28
29	public function Analyze() {
30
31	$getid3 = $this->getid3;
32
33	$getid3->info['fileformat'] = 'iso';
34
35	for ($i = 16; $i <= 19; $i++) {
36	fseek($getid3->fp, 2048 * $i, SEEK_SET);
37	$iso_header = fread($getid3->fp, 2048);
38	if (substr($iso_header, 1, 5) == 'CD001') {
39	switch (ord($iso_header{0})) {
40	case 1:
41	$getid3->info['iso']['primary_volume_descriptor']['offset'] = 2048 * $i;
42	$this->ParsePrimaryVolumeDescriptor($iso_header);
43	break;
44
45	case 2:
46	$getid3->info['iso']['supplementary_volume_descriptor']['offset'] = 2048 * $i;
47	$this->ParseSupplementaryVolumeDescriptor($iso_header);
48	break;
49
50	default:
51	// skip
52	break;
53	}
54	}
55	}
56
57	$this->ParsePathTable();
58
59	$getid3->info['iso']['files'] = array ();
60	foreach ($getid3->info['iso']['path_table']['directories'] as $directory_num => $directory_data) {
61	$getid3->info['iso']['directories'][$directory_num] = $this->ParseDirectoryRecord($directory_data);
62	}
63
64	return true;
65	}
66
67
68
69	private function ParsePrimaryVolumeDescriptor(&$iso_header) {
70
71	$getid3 = $this->getid3;
72
73	// ISO integer values are stored BOTH Little-Endian AND Big-Endian format!!
74	// ie 12345 == 0x3039 is stored as $39 $30 $30 $39 in a 4-byte field
75
76	$getid3->info['iso']['primary_volume_descriptor']['raw'] = array ();
77	$info_iso_primaryVD = &$getid3->info['iso']['primary_volume_descriptor'];
78	$info_iso_primaryVD_raw = &$info_iso_primaryVD['raw'];
79
80	$info_iso_primaryVD_raw['volume_descriptor_type'] = getid3_lib::LittleEndian2Int(substr($iso_header, 0, 1));
81	$info_iso_primaryVD_raw['standard_identifier'] = substr($iso_header, 1, 5);
82	if ($info_iso_primaryVD_raw['standard_identifier'] != 'CD001') {
83	throw new getid3_exception('Expected "CD001" at offset ('.($info_iso_primaryVD['offset'] + 1).'), found "'.$info_iso_primaryVD_raw['standard_identifier'].'" instead');
84	}
85
86	getid3_lib::ReadSequence('LittleEndian2Int', $info_iso_primaryVD_raw, $iso_header, 6,
87	array (
88	'volume_descriptor_version' => 1,
89	'IGNORE-unused_1' => 1,
90	'system_identifier' => -32, // string
91	'volume_identifier' => -32, // string
92	'IGNORE-unused_2' => 8,
93	'volume_space_size' => 4,
94	'IGNORE-1' => 4,
95	'IGNORE-unused_3' => 32,
96	'volume_set_size' => 2,
97	'IGNORE-2' => 2,
98	'volume_sequence_number' => 2,
99	'IGNORE-3' => 2,
100	'logical_block_size' => 2,
101	'IGNORE-4' => 2,
102	'path_table_size' => 4,
103	'IGNORE-5' => 4,
104	'path_table_l_location' => 2,
105	'IGNORE-6' => 2,
106	'path_table_l_opt_location' => 2,
107	'IGNORE-7' => 2,
108	'path_table_m_location' => 2,
109	'IGNORE-8' => 2,
110	'path_table_m_opt_location' => 2,
111	'IGNORE-9' => 2,
112	'root_directory_record' => -34, // string
113	'volume_set_identifier' => -128, // string
114	'publisher_identifier' => -128, // string
115	'data_preparer_identifier' => -128, // string
116	'application_identifier' => -128, // string
117	'copyright_file_identifier' => -37, // string
118	'abstract_file_identifier' => -37, // string
119	'bibliographic_file_identifier' => -37, // string
120	'volume_creation_date_time' => -17, // string
121	'volume_modification_date_time' => -17, // string
122	'volume_expiration_date_time' => -17, // string
123	'volume_effective_date_time' => -17, // string
124	'file_structure_version' => 1,
125	'IGNORE-unused_4' => 1,
126	'application_data' => -512 // string
127	)
128	);
129
130	$info_iso_primaryVD['system_identifier'] = trim($info_iso_primaryVD_raw['system_identifier']);
131	$info_iso_primaryVD['volume_identifier'] = trim($info_iso_primaryVD_raw['volume_identifier']);
132	$info_iso_primaryVD['volume_set_identifier'] = trim($info_iso_primaryVD_raw['volume_set_identifier']);
133	$info_iso_primaryVD['publisher_identifier'] = trim($info_iso_primaryVD_raw['publisher_identifier']);
134	$info_iso_primaryVD['data_preparer_identifier'] = trim($info_iso_primaryVD_raw['data_preparer_identifier']);
135	$info_iso_primaryVD['application_identifier'] = trim($info_iso_primaryVD_raw['application_identifier']);
136	$info_iso_primaryVD['copyright_file_identifier'] = trim($info_iso_primaryVD_raw['copyright_file_identifier']);
137	$info_iso_primaryVD['abstract_file_identifier'] = trim($info_iso_primaryVD_raw['abstract_file_identifier']);
138	$info_iso_primaryVD['bibliographic_file_identifier'] = trim($info_iso_primaryVD_raw['bibliographic_file_identifier']);
139
140	$info_iso_primaryVD['volume_creation_date_time'] = getid3_iso::ISOtimeText2UNIXtime($info_iso_primaryVD_raw['volume_creation_date_time']);
141	$info_iso_primaryVD['volume_modification_date_time'] = getid3_iso::ISOtimeText2UNIXtime($info_iso_primaryVD_raw['volume_modification_date_time']);
142	$info_iso_primaryVD['volume_expiration_date_time'] = getid3_iso::ISOtimeText2UNIXtime($info_iso_primaryVD_raw['volume_expiration_date_time']);
143	$info_iso_primaryVD['volume_effective_date_time'] = getid3_iso::ISOtimeText2UNIXtime($info_iso_primaryVD_raw['volume_effective_date_time']);
144
145	if (($info_iso_primaryVD_raw['volume_space_size'] * 2048) > $getid3->info['filesize']) {
146	throw new getid3_exception('Volume Space Size ('.($info_iso_primaryVD_raw['volume_space_size'] * 2048).' bytes) is larger than the file size ('.$getid3->info['filesize'].' bytes) (truncated file?)');
147	}
148
149	return true;
150	}
151
152
153
154	private function ParseSupplementaryVolumeDescriptor(&$iso_header) {
155
156	$getid3 = $this->getid3;
157
158	// ISO integer values are stored Both-Endian format!!
159	// ie 12345 == 0x3039 is stored as $39 $30 $30 $39 in a 4-byte field
160
161	$getid3->info['iso']['supplementary_volume_descriptor']['raw'] = array ();
162	$info_iso_supplementaryVD = &$getid3->info['iso']['supplementary_volume_descriptor'];
163	$info_iso_supplementaryVD_raw = &$info_iso_supplementaryVD['raw'];
164
165	$info_iso_supplementaryVD_raw['volume_descriptor_type'] = getid3_lib::LittleEndian2Int(substr($iso_header, 0, 1));
166	$info_iso_supplementaryVD_raw['standard_identifier'] = substr($iso_header, 1, 5);
167	if ($info_iso_supplementaryVD_raw['standard_identifier'] != 'CD001') {
168	throw new getid3_exception('Expected "CD001" at offset ('.($info_iso_supplementaryVD['offset'] + 1).'), found "'.$info_iso_supplementaryVD_raw['standard_identifier'].'" instead');
169	}
170
171	getid3_lib::ReadSequence('LittleEndian2Int', $info_iso_supplementaryVD_raw, $iso_header, 6,
172	array (
173	'volume_descriptor_version' => 1,
174	'IGNORE-unused_1' => -1,
175	'system_identifier' => -32,
176	'volume_identifier' => -32,
177	'IGNORE-unused_2' => -8,
178	'volume_space_size' => 4,
179	'IGNORE-1' => 4,
180	'IGNORE-unused_3' => -32,
181	'volume_set_size' => 2,
182	'IGNORE-2' => 2,
183	'volume_sequence_number' => 2,
184	'IGNORE-3' => 2,
185	'logical_block_size' => 2,
186	'IGNORE-4' => 2,
187	'path_table_size' => 4,
188	'IGNORE-5' => 4,
189	'path_table_l_location' => 2,
190	'IGNORE-6' => 2,
191	'path_table_l_opt_location' => 2,
192	'IGNORE-7' => 2,
193	'path_table_m_location' => 2,
194	'IGNORE-8' => 2,
195	'path_table_m_opt_location' => 2,
196	'IGNORE-9' => 2,
197	'root_directory_record' => -34,
198	'volume_set_identifier' => -128,
199	'publisher_identifier' => -128,
200	'data_preparer_identifier' => -128,
201	'application_identifier' => -128,
202	'copyright_file_identifier' => -37,
203	'abstract_file_identifier' => -37,
204	'bibliographic_file_identifier' => -37,
205	'volume_creation_date_time' => -17,
206	'volume_modification_date_time' => -17,
207	'volume_expiration_date_time' => -17,
208	'volume_effective_date_time' => -17,
209	'file_structure_version' => 1,
210	'IGNORE-unused_4' => 1,
211	'application_data' => -512
212	)
213	);
214
215	$info_iso_supplementaryVD['system_identifier'] = trim($info_iso_supplementaryVD_raw['system_identifier']);
216	$info_iso_supplementaryVD['volume_identifier'] = trim($info_iso_supplementaryVD_raw['volume_identifier']);
217	$info_iso_supplementaryVD['volume_set_identifier'] = trim($info_iso_supplementaryVD_raw['volume_set_identifier']);
218	$info_iso_supplementaryVD['publisher_identifier'] = trim($info_iso_supplementaryVD_raw['publisher_identifier']);
219	$info_iso_supplementaryVD['data_preparer_identifier'] = trim($info_iso_supplementaryVD_raw['data_preparer_identifier']);
220	$info_iso_supplementaryVD['application_identifier'] = trim($info_iso_supplementaryVD_raw['application_identifier']);
221	$info_iso_supplementaryVD['copyright_file_identifier'] = trim($info_iso_supplementaryVD_raw['copyright_file_identifier']);
222	$info_iso_supplementaryVD['abstract_file_identifier'] = trim($info_iso_supplementaryVD_raw['abstract_file_identifier']);
223	$info_iso_supplementaryVD['bibliographic_file_identifier'] = trim($info_iso_supplementaryVD_raw['bibliographic_file_identifier']);
224
225	$info_iso_supplementaryVD['volume_creation_date_time'] = getid3_iso::ISOtimeText2UNIXtime($info_iso_supplementaryVD_raw['volume_creation_date_time']);
226	$info_iso_supplementaryVD['volume_modification_date_time'] = getid3_iso::ISOtimeText2UNIXtime($info_iso_supplementaryVD_raw['volume_modification_date_time']);
227	$info_iso_supplementaryVD['volume_expiration_date_time'] = getid3_iso::ISOtimeText2UNIXtime($info_iso_supplementaryVD_raw['volume_expiration_date_time']);
228	$info_iso_supplementaryVD['volume_effective_date_time'] = getid3_iso::ISOtimeText2UNIXtime($info_iso_supplementaryVD_raw['volume_effective_date_time']);
229
230	if (($info_iso_supplementaryVD_raw['volume_space_size'] * $info_iso_supplementaryVD_raw['logical_block_size']) > $getid3->info['filesize']) {
231	throw new getid3_exception('Volume Space Size ('.($info_iso_supplementaryVD_raw['volume_space_size'] * $info_iso_supplementaryVD_raw['logical_block_size']).' bytes) is larger than the file size ('.$getid3->info['filesize'].' bytes) (truncated file?)');
232	}
233
234	return true;
235	}
236
237
238
239	private function ParsePathTable() {
240
241	$getid3 = $this->getid3;
242
243	if (!isset($getid3->info['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location']) && !isset($getid3->info['iso']['primary_volume_descriptor']['raw']['path_table_l_location'])) {
244	return false;
245	}
246	if (isset($getid3->info['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location'])) {
247	$path_table_location = $getid3->info['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location'];
248	$path_table_size = $getid3->info['iso']['supplementary_volume_descriptor']['raw']['path_table_size'];
249	$text_encoding = 'UTF-16BE'; // Big-Endian Unicode
250	}
251	else {
252	$path_table_location = $getid3->info['iso']['primary_volume_descriptor']['raw']['path_table_l_location'];
253	$path_table_size = $getid3->info['iso']['primary_volume_descriptor']['raw']['path_table_size'];
254	$text_encoding = 'ISO-8859-1'; // Latin-1
255	}
256
257	if (($path_table_location * 2048) > $getid3->info['filesize']) {
258	throw new getid3_exception('Path Table Location specifies an offset ('.($path_table_location * 2048).') beyond the end-of-file ('.$getid3->info['filesize'].')');
259	}
260
261	$getid3->info['iso']['path_table']['offset'] = $path_table_location * 2048;
262	fseek($getid3->fp, $getid3->info['iso']['path_table']['offset'], SEEK_SET);
263	$getid3->info['iso']['path_table']['raw'] = fread($getid3->fp, $path_table_size);
264
265	$offset = 0;
266	$pathcounter = 1;
267	while ($offset < $path_table_size) {
268
269	$getid3->info['iso']['path_table']['directories'][$pathcounter] = array ();
270	$info_iso_pathtable_directories_current = &$getid3->info['iso']['path_table']['directories'][$pathcounter];
271
272	getid3_lib::ReadSequence('LittleEndian2Int', $info_iso_pathtable_directories_current, $getid3->info['iso']['path_table']['raw'], $offset,
273	array (
274	'length' => 1,
275	'extended_length' => 1,
276	'location_logical' => 4,
277	'parent_directory' => 2,
278	)
279	);
280
281	$info_iso_pathtable_directories_current['name'] = substr($getid3->info['iso']['path_table']['raw'], $offset+8, $info_iso_pathtable_directories_current['length']);
282
283	$offset += 8 + $info_iso_pathtable_directories_current['length'] + ($info_iso_pathtable_directories_current['length'] % 2);
284
285	$info_iso_pathtable_directories_current['name_ascii'] = $getid3->iconv($text_encoding, $getid3->encoding, $info_iso_pathtable_directories_current['name'], true);
286
287	$info_iso_pathtable_directories_current['location_bytes'] = $info_iso_pathtable_directories_current['location_logical'] * 2048;
288	if ($pathcounter == 1) {
289	$info_iso_pathtable_directories_current['full_path'] = '/';
290	}
291	else {
292	$info_iso_pathtable_directories_current['full_path'] = $getid3->info['iso']['path_table']['directories'][$info_iso_pathtable_directories_current['parent_directory']]['full_path'].$info_iso_pathtable_directories_current['name_ascii'].'/';
293	}
294	$full_path_array[] = $info_iso_pathtable_directories_current['full_path'];
295
296	$pathcounter++;
297	}
298
299	return true;
300	}
301
302
303
304	private function ParseDirectoryRecord($directory_data) {
305
306	$getid3 = $this->getid3;
307
308	$text_encoding = isset($getid3->info['iso']['supplementary_volume_descriptor']) ? 'UTF-16BE' : 'ISO-8859-1';
309
310	fseek($getid3->fp, $directory_data['location_bytes'], SEEK_SET);
311	$directory_record_data = fread($getid3->fp, 1);
312
313	while (ord($directory_record_data{0}) > 33) {
314
315	$directory_record_data .= fread($getid3->fp, ord($directory_record_data{0}) - 1);
316
317	$this_directory_record = array ();
318	$this_directory_record['raw'] = array ();
319	$this_directory_record_raw = &$this_directory_record['raw'];
320
321	getid3_lib::ReadSequence('LittleEndian2Int', $this_directory_record_raw, $directory_record_data, 0,
322	array (
323	'length' => 1,
324	'extended_attribute_length' => 1,
325	'offset_logical' => 4,
326	'IGNORE-1' => 4,
327	'filesize' => 4,
328	'IGNORE-2' => 4,
329	'recording_date_time' => -7,
330	'file_flags' => 1,
331	'file_unit_size' => 1,
332	'interleave_gap_size' => 1,
333	'volume_sequence_number' => 2,
334	'IGNORE-3' => 2,
335	'file_identifier_length' => 1,
336	)
337	);
338
339	$this_directory_record_raw['file_identifier'] = substr($directory_record_data, 33, $this_directory_record_raw['file_identifier_length']);
340
341	$this_directory_record['file_identifier_ascii'] = $getid3->iconv($text_encoding, $getid3->encoding, $this_directory_record_raw['file_identifier'], true);
342	$this_directory_record['filesize'] = $this_directory_record_raw['filesize'];
343	$this_directory_record['offset_bytes'] = $this_directory_record_raw['offset_logical'] * 2048;
344	$this_directory_record['file_flags']['hidden'] = (bool)($this_directory_record_raw['file_flags'] & 0x01);
345	$this_directory_record['file_flags']['directory'] = (bool)($this_directory_record_raw['file_flags'] & 0x02);
346	$this_directory_record['file_flags']['associated'] = (bool)($this_directory_record_raw['file_flags'] & 0x04);
347	$this_directory_record['file_flags']['extended'] = (bool)($this_directory_record_raw['file_flags'] & 0x08);
348	$this_directory_record['file_flags']['permissions'] = (bool)($this_directory_record_raw['file_flags'] & 0x10);
349	$this_directory_record['file_flags']['multiple'] = (bool)($this_directory_record_raw['file_flags'] & 0x80);
350	$this_directory_record['recording_timestamp'] = getid3_iso::ISOtime2UNIXtime($this_directory_record_raw['recording_date_time']);
351
352	if ($this_directory_record['file_flags']['directory']) {
353	$this_directory_record['filename'] = $directory_data['full_path'];
354	}
355	else {
356	$this_directory_record['filename'] = $directory_data['full_path'].getid3_iso::ISOstripFilenameVersion($this_directory_record['file_identifier_ascii']);
357	$getid3->info['iso']['files'] = getid3_iso::array_merge_clobber($getid3->info['iso']['files'], getid3_iso::CreateDeepArray($this_directory_record['filename'], '/', $this_directory_record['filesize']));
358	}
359
360	$directory_record[] = $this_directory_record;
361	$directory_record_data = fread($getid3->fp, 1);
362	}
363
364	return $directory_record;
365	}
366
367
368
369	public static function ISOstripFilenameVersion($iso_filename) {
370
371	// convert 'filename.ext;1' to 'filename.ext'
372	if (!strstr($iso_filename, ';')) {
373	return $iso_filename;
374	}
375	return substr($iso_filename, 0, strpos($iso_filename, ';'));
376	}
377
378
379
380	public static function ISOtimeText2UNIXtime($iso_time) {
381
382	if (!(int)substr($iso_time, 0, 4)) {
383	return false;
384	}
385
386	return gmmktime((int)substr($iso_time, 8, 2), (int)substr($iso_time, 10, 2), (int)substr($iso_time, 12, 2), (int)substr($iso_time, 4, 2), (int)substr($iso_time, 6, 2), (int)substr($iso_time, 0, 4));
387	}
388
389
390
391	public static function ISOtime2UNIXtime($iso_time) {
392
393	// Represented by seven bytes:
394	// 1: Number of years since 1900
395	// 2: Month of the year from 1 to 12
396	// 3: Day of the Month from 1 to 31
397	// 4: Hour of the day from 0 to 23
398	// 5: Minute of the hour from 0 to 59
399	// 6: second of the minute from 0 to 59
400	// 7: Offset from Greenwich Mean Time in number of 15 minute intervals from -48 (West) to +52 (East)
401
402	return gmmktime(ord($iso_time[3]), ord($iso_time[4]), ord($iso_time[5]), ord($iso_time[1]), ord($iso_time[2]), ord($iso_time[0]) + 1900);
403	}
404
405
406
407	public static function array_merge_clobber($array1, $array2) {
408
409	// written by kcØhireability*com
410	// taken from http://www.php.net/manual/en/function.array-merge-recursive.php
411
412	if (!is_array($array1) \|\| !is_array($array2)) {
413	return false;
414	}
415
416	$newarray = $array1;
417	foreach ($array2 as $key => $val) {
418	if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) {
419	$newarray[$key] = getid3_iso::array_merge_clobber($newarray[$key], $val);
420	} else {
421	$newarray[$key] = $val;
422	}
423	}
424	return $newarray;
425	}
426
427
428
429	public static function CreateDeepArray($array_path, $separator, $value) {
430
431	// assigns $value to a nested array path:
432	// $foo = getid3_lib::CreateDeepArray('/path/to/my', '/', 'file.txt')
433	// is the same as:
434	// $foo = array ('path'=>array('to'=>'array('my'=>array('file.txt'))));
435	// or
436	// $foo['path']['to']['my'] = 'file.txt';
437
438	while ($array_path{0} == $separator) {
439	$array_path = substr($array_path, 1);
440	}
441	if (($pos = strpos($array_path, $separator)) !== false) {
442	return array (substr($array_path, 0, $pos) => getid3_iso::CreateDeepArray(substr($array_path, $pos + 1), $separator, $value));
443	}
444
445	return array ($array_path => $value);
446	}
447
448	}
449
450	?>

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