ILIAS  release_5-1 Revision 5.0.0-5477-g43f3e3fab5f
module.misc.iso.php
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1<?php
4// available at http://getid3.sourceforge.net //
5// or http://www.getid3.org //
7// See readme.txt for more details //
9// //
10// module.misc.iso.php //
11// module for analyzing ISO files //
12// dependencies: NONE //
13// ///
15
16
17class getid3_iso
18{
19
20 function getid3_iso($fd, &$ThisFileInfo) {
21 $ThisFileInfo['fileformat'] = 'iso';
22
23 for ($i = 16; $i <= 19; $i++) {
24 fseek($fd, 2048 * $i, SEEK_SET);
25 $ISOheader = fread($fd, 2048);
26 if (substr($ISOheader, 1, 5) == 'CD001') {
27 switch (ord($ISOheader{0})) {
28 case 1:
29 $ThisFileInfo['iso']['primary_volume_descriptor']['offset'] = 2048 * $i;
30 $this->ParsePrimaryVolumeDescriptor($ISOheader, $ThisFileInfo);
31 break;
32
33 case 2:
34 $ThisFileInfo['iso']['supplementary_volume_descriptor']['offset'] = 2048 * $i;
35 $this->ParseSupplementaryVolumeDescriptor($ISOheader, $ThisFileInfo);
36 break;
37
38 default:
39 // skip
40 break;
41 }
42 }
43 }
44
45 $this->ParsePathTable($fd, $ThisFileInfo);
46
47 $ThisFileInfo['iso']['files'] = array();
48 foreach ($ThisFileInfo['iso']['path_table']['directories'] as $directorynum => $directorydata) {
49
50 $ThisFileInfo['iso']['directories'][$directorynum] = $this->ParseDirectoryRecord($fd, $directorydata, $ThisFileInfo);
51
52 }
53
54 return true;
55
56 }
57
58
59 function ParsePrimaryVolumeDescriptor(&$ISOheader, &$ThisFileInfo) {
60 // ISO integer values are stored *BOTH* Little-Endian AND Big-Endian format!!
61 // ie 12345 == 0x3039 is stored as $39 $30 $30 $39 in a 4-byte field
62
63 // shortcuts
64 $ThisFileInfo['iso']['primary_volume_descriptor']['raw'] = array();
65 $thisfile_iso_primaryVD = &$ThisFileInfo['iso']['primary_volume_descriptor'];
66 $thisfile_iso_primaryVD_raw = &$thisfile_iso_primaryVD['raw'];
67
68 $thisfile_iso_primaryVD_raw['volume_descriptor_type'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 0, 1));
69 $thisfile_iso_primaryVD_raw['standard_identifier'] = substr($ISOheader, 1, 5);
70 if ($thisfile_iso_primaryVD_raw['standard_identifier'] != 'CD001') {
71 $ThisFileInfo['error'][] = 'Expected "CD001" at offset ('.($thisfile_iso_primaryVD['offset'] + 1).'), found "'.$thisfile_iso_primaryVD_raw['standard_identifier'].'" instead';
72 unset($ThisFileInfo['fileformat']);
73 unset($ThisFileInfo['iso']);
74 return false;
75 }
76
77
78 $thisfile_iso_primaryVD_raw['volume_descriptor_version'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 6, 1));
79 //$thisfile_iso_primaryVD_raw['unused_1'] = substr($ISOheader, 7, 1);
80 $thisfile_iso_primaryVD_raw['system_identifier'] = substr($ISOheader, 8, 32);
81 $thisfile_iso_primaryVD_raw['volume_identifier'] = substr($ISOheader, 40, 32);
82 //$thisfile_iso_primaryVD_raw['unused_2'] = substr($ISOheader, 72, 8);
83 $thisfile_iso_primaryVD_raw['volume_space_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 80, 4));
84 //$thisfile_iso_primaryVD_raw['unused_3'] = substr($ISOheader, 88, 32);
85 $thisfile_iso_primaryVD_raw['volume_set_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 120, 2));
86 $thisfile_iso_primaryVD_raw['volume_sequence_number'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 124, 2));
87 $thisfile_iso_primaryVD_raw['logical_block_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 128, 2));
88 $thisfile_iso_primaryVD_raw['path_table_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 132, 4));
89 $thisfile_iso_primaryVD_raw['path_table_l_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 140, 2));
90 $thisfile_iso_primaryVD_raw['path_table_l_opt_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 144, 2));
91 $thisfile_iso_primaryVD_raw['path_table_m_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 148, 2));
92 $thisfile_iso_primaryVD_raw['path_table_m_opt_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 152, 2));
93 $thisfile_iso_primaryVD_raw['root_directory_record'] = substr($ISOheader, 156, 34);
94 $thisfile_iso_primaryVD_raw['volume_set_identifier'] = substr($ISOheader, 190, 128);
95 $thisfile_iso_primaryVD_raw['publisher_identifier'] = substr($ISOheader, 318, 128);
96 $thisfile_iso_primaryVD_raw['data_preparer_identifier'] = substr($ISOheader, 446, 128);
97 $thisfile_iso_primaryVD_raw['application_identifier'] = substr($ISOheader, 574, 128);
98 $thisfile_iso_primaryVD_raw['copyright_file_identifier'] = substr($ISOheader, 702, 37);
99 $thisfile_iso_primaryVD_raw['abstract_file_identifier'] = substr($ISOheader, 739, 37);
100 $thisfile_iso_primaryVD_raw['bibliographic_file_identifier'] = substr($ISOheader, 776, 37);
101 $thisfile_iso_primaryVD_raw['volume_creation_date_time'] = substr($ISOheader, 813, 17);
102 $thisfile_iso_primaryVD_raw['volume_modification_date_time'] = substr($ISOheader, 830, 17);
103 $thisfile_iso_primaryVD_raw['volume_expiration_date_time'] = substr($ISOheader, 847, 17);
104 $thisfile_iso_primaryVD_raw['volume_effective_date_time'] = substr($ISOheader, 864, 17);
105 $thisfile_iso_primaryVD_raw['file_structure_version'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 881, 1));
106 //$thisfile_iso_primaryVD_raw['unused_4'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 882, 1));
107 $thisfile_iso_primaryVD_raw['application_data'] = substr($ISOheader, 883, 512);
108 //$thisfile_iso_primaryVD_raw['unused_5'] = substr($ISOheader, 1395, 653);
109
110 $thisfile_iso_primaryVD['system_identifier'] = trim($thisfile_iso_primaryVD_raw['system_identifier']);
111 $thisfile_iso_primaryVD['volume_identifier'] = trim($thisfile_iso_primaryVD_raw['volume_identifier']);
112 $thisfile_iso_primaryVD['volume_set_identifier'] = trim($thisfile_iso_primaryVD_raw['volume_set_identifier']);
113 $thisfile_iso_primaryVD['publisher_identifier'] = trim($thisfile_iso_primaryVD_raw['publisher_identifier']);
114 $thisfile_iso_primaryVD['data_preparer_identifier'] = trim($thisfile_iso_primaryVD_raw['data_preparer_identifier']);
115 $thisfile_iso_primaryVD['application_identifier'] = trim($thisfile_iso_primaryVD_raw['application_identifier']);
116 $thisfile_iso_primaryVD['copyright_file_identifier'] = trim($thisfile_iso_primaryVD_raw['copyright_file_identifier']);
117 $thisfile_iso_primaryVD['abstract_file_identifier'] = trim($thisfile_iso_primaryVD_raw['abstract_file_identifier']);
118 $thisfile_iso_primaryVD['bibliographic_file_identifier'] = trim($thisfile_iso_primaryVD_raw['bibliographic_file_identifier']);
119 $thisfile_iso_primaryVD['volume_creation_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_creation_date_time']);
120 $thisfile_iso_primaryVD['volume_modification_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_modification_date_time']);
121 $thisfile_iso_primaryVD['volume_expiration_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_expiration_date_time']);
122 $thisfile_iso_primaryVD['volume_effective_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_effective_date_time']);
123
124 if (($thisfile_iso_primaryVD_raw['volume_space_size'] * 2048) > $ThisFileInfo['filesize']) {
125 $ThisFileInfo['error'][] = 'Volume Space Size ('.($thisfile_iso_primaryVD_raw['volume_space_size'] * 2048).' bytes) is larger than the file size ('.$ThisFileInfo['filesize'].' bytes) (truncated file?)';
126 }
127
128 return true;
129 }
130
131
132 function ParseSupplementaryVolumeDescriptor(&$ISOheader, &$ThisFileInfo) {
133 // ISO integer values are stored Both-Endian format!!
134 // ie 12345 == 0x3039 is stored as $39 $30 $30 $39 in a 4-byte field
135
136 // shortcuts
137 $ThisFileInfo['iso']['supplementary_volume_descriptor']['raw'] = array();
138 $thisfile_iso_supplementaryVD = &$ThisFileInfo['iso']['supplementary_volume_descriptor'];
139 $thisfile_iso_supplementaryVD_raw = &$thisfile_iso_supplementaryVD['raw'];
140
141 $thisfile_iso_supplementaryVD_raw['volume_descriptor_type'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 0, 1));
142 $thisfile_iso_supplementaryVD_raw['standard_identifier'] = substr($ISOheader, 1, 5);
143 if ($thisfile_iso_supplementaryVD_raw['standard_identifier'] != 'CD001') {
144 $ThisFileInfo['error'][] = 'Expected "CD001" at offset ('.($thisfile_iso_supplementaryVD['offset'] + 1).'), found "'.$thisfile_iso_supplementaryVD_raw['standard_identifier'].'" instead';
145 unset($ThisFileInfo['fileformat']);
146 unset($ThisFileInfo['iso']);
147 return false;
148 }
149
150 $thisfile_iso_supplementaryVD_raw['volume_descriptor_version'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 6, 1));
151 //$thisfile_iso_supplementaryVD_raw['unused_1'] = substr($ISOheader, 7, 1);
152 $thisfile_iso_supplementaryVD_raw['system_identifier'] = substr($ISOheader, 8, 32);
153 $thisfile_iso_supplementaryVD_raw['volume_identifier'] = substr($ISOheader, 40, 32);
154 //$thisfile_iso_supplementaryVD_raw['unused_2'] = substr($ISOheader, 72, 8);
155 $thisfile_iso_supplementaryVD_raw['volume_space_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 80, 4));
156 if ($thisfile_iso_supplementaryVD_raw['volume_space_size'] == 0) {
157 // Supplementary Volume Descriptor not used
158 //unset($thisfile_iso_supplementaryVD);
159 //return false;
160 }
161
162 //$thisfile_iso_supplementaryVD_raw['unused_3'] = substr($ISOheader, 88, 32);
163 $thisfile_iso_supplementaryVD_raw['volume_set_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 120, 2));
164 $thisfile_iso_supplementaryVD_raw['volume_sequence_number'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 124, 2));
165 $thisfile_iso_supplementaryVD_raw['logical_block_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 128, 2));
166 $thisfile_iso_supplementaryVD_raw['path_table_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 132, 4));
167 $thisfile_iso_supplementaryVD_raw['path_table_l_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 140, 2));
168 $thisfile_iso_supplementaryVD_raw['path_table_l_opt_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 144, 2));
169 $thisfile_iso_supplementaryVD_raw['path_table_m_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 148, 2));
170 $thisfile_iso_supplementaryVD_raw['path_table_m_opt_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 152, 2));
171 $thisfile_iso_supplementaryVD_raw['root_directory_record'] = substr($ISOheader, 156, 34);
172 $thisfile_iso_supplementaryVD_raw['volume_set_identifier'] = substr($ISOheader, 190, 128);
173 $thisfile_iso_supplementaryVD_raw['publisher_identifier'] = substr($ISOheader, 318, 128);
174 $thisfile_iso_supplementaryVD_raw['data_preparer_identifier'] = substr($ISOheader, 446, 128);
175 $thisfile_iso_supplementaryVD_raw['application_identifier'] = substr($ISOheader, 574, 128);
176 $thisfile_iso_supplementaryVD_raw['copyright_file_identifier'] = substr($ISOheader, 702, 37);
177 $thisfile_iso_supplementaryVD_raw['abstract_file_identifier'] = substr($ISOheader, 739, 37);
178 $thisfile_iso_supplementaryVD_raw['bibliographic_file_identifier'] = substr($ISOheader, 776, 37);
179 $thisfile_iso_supplementaryVD_raw['volume_creation_date_time'] = substr($ISOheader, 813, 17);
180 $thisfile_iso_supplementaryVD_raw['volume_modification_date_time'] = substr($ISOheader, 830, 17);
181 $thisfile_iso_supplementaryVD_raw['volume_expiration_date_time'] = substr($ISOheader, 847, 17);
182 $thisfile_iso_supplementaryVD_raw['volume_effective_date_time'] = substr($ISOheader, 864, 17);
183 $thisfile_iso_supplementaryVD_raw['file_structure_version'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 881, 1));
184 //$thisfile_iso_supplementaryVD_raw['unused_4'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 882, 1));
185 $thisfile_iso_supplementaryVD_raw['application_data'] = substr($ISOheader, 883, 512);
186 //$thisfile_iso_supplementaryVD_raw['unused_5'] = substr($ISOheader, 1395, 653);
187
188 $thisfile_iso_supplementaryVD['system_identifier'] = trim($thisfile_iso_supplementaryVD_raw['system_identifier']);
189 $thisfile_iso_supplementaryVD['volume_identifier'] = trim($thisfile_iso_supplementaryVD_raw['volume_identifier']);
190 $thisfile_iso_supplementaryVD['volume_set_identifier'] = trim($thisfile_iso_supplementaryVD_raw['volume_set_identifier']);
191 $thisfile_iso_supplementaryVD['publisher_identifier'] = trim($thisfile_iso_supplementaryVD_raw['publisher_identifier']);
192 $thisfile_iso_supplementaryVD['data_preparer_identifier'] = trim($thisfile_iso_supplementaryVD_raw['data_preparer_identifier']);
193 $thisfile_iso_supplementaryVD['application_identifier'] = trim($thisfile_iso_supplementaryVD_raw['application_identifier']);
194 $thisfile_iso_supplementaryVD['copyright_file_identifier'] = trim($thisfile_iso_supplementaryVD_raw['copyright_file_identifier']);
195 $thisfile_iso_supplementaryVD['abstract_file_identifier'] = trim($thisfile_iso_supplementaryVD_raw['abstract_file_identifier']);
196 $thisfile_iso_supplementaryVD['bibliographic_file_identifier'] = trim($thisfile_iso_supplementaryVD_raw['bibliographic_file_identifier']);
197 $thisfile_iso_supplementaryVD['volume_creation_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_creation_date_time']);
198 $thisfile_iso_supplementaryVD['volume_modification_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_modification_date_time']);
199 $thisfile_iso_supplementaryVD['volume_expiration_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_expiration_date_time']);
200 $thisfile_iso_supplementaryVD['volume_effective_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_effective_date_time']);
201
202 if (($thisfile_iso_supplementaryVD_raw['volume_space_size'] * $thisfile_iso_supplementaryVD_raw['logical_block_size']) > $ThisFileInfo['filesize']) {
203 $ThisFileInfo['error'][] = 'Volume Space Size ('.($thisfile_iso_supplementaryVD_raw['volume_space_size'] * $thisfile_iso_supplementaryVD_raw['logical_block_size']).' bytes) is larger than the file size ('.$ThisFileInfo['filesize'].' bytes) (truncated file?)';
204 }
205
206 return true;
207 }
208
209
210 function ParsePathTable($fd, &$ThisFileInfo) {
211 if (!isset($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location']) && !isset($ThisFileInfo['iso']['primary_volume_descriptor']['raw']['path_table_l_location'])) {
212 return false;
213 }
214 if (isset($ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location'])) {
215 $PathTableLocation = $ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location'];
216 $PathTableSize = $ThisFileInfo['iso']['supplementary_volume_descriptor']['raw']['path_table_size'];
217 $TextEncoding = 'UTF-16BE'; // Big-Endian Unicode
218 } else {
219 $PathTableLocation = $ThisFileInfo['iso']['primary_volume_descriptor']['raw']['path_table_l_location'];
220 $PathTableSize = $ThisFileInfo['iso']['primary_volume_descriptor']['raw']['path_table_size'];
221 $TextEncoding = 'ISO-8859-1'; // Latin-1
222 }
223
224 if (($PathTableLocation * 2048) > $ThisFileInfo['filesize']) {
225 $ThisFileInfo['error'][] = 'Path Table Location specifies an offset ('.($PathTableLocation * 2048).') beyond the end-of-file ('.$ThisFileInfo['filesize'].')';
226 return false;
227 }
228
229 $ThisFileInfo['iso']['path_table']['offset'] = $PathTableLocation * 2048;
230 fseek($fd, $ThisFileInfo['iso']['path_table']['offset'], SEEK_SET);
231 $ThisFileInfo['iso']['path_table']['raw'] = fread($fd, $PathTableSize);
232
233 $offset = 0;
234 $pathcounter = 1;
235 while ($offset < $PathTableSize) {
236 // shortcut
237 $ThisFileInfo['iso']['path_table']['directories'][$pathcounter] = array();
238 $thisfile_iso_pathtable_directories_current = &$ThisFileInfo['iso']['path_table']['directories'][$pathcounter];
239
240 $thisfile_iso_pathtable_directories_current['length'] = getid3_lib::LittleEndian2Int(substr($ThisFileInfo['iso']['path_table']['raw'], $offset, 1));
241 $offset += 1;
242 $thisfile_iso_pathtable_directories_current['extended_length'] = getid3_lib::LittleEndian2Int(substr($ThisFileInfo['iso']['path_table']['raw'], $offset, 1));
243 $offset += 1;
244 $thisfile_iso_pathtable_directories_current['location_logical'] = getid3_lib::LittleEndian2Int(substr($ThisFileInfo['iso']['path_table']['raw'], $offset, 4));
245 $offset += 4;
246 $thisfile_iso_pathtable_directories_current['parent_directory'] = getid3_lib::LittleEndian2Int(substr($ThisFileInfo['iso']['path_table']['raw'], $offset, 2));
247 $offset += 2;
248 $thisfile_iso_pathtable_directories_current['name'] = substr($ThisFileInfo['iso']['path_table']['raw'], $offset, $thisfile_iso_pathtable_directories_current['length']);
249 $offset += $thisfile_iso_pathtable_directories_current['length'] + ($thisfile_iso_pathtable_directories_current['length'] % 2);
250
251 $thisfile_iso_pathtable_directories_current['name_ascii'] = getid3_lib::iconv_fallback($TextEncoding, $ThisFileInfo['encoding'], $thisfile_iso_pathtable_directories_current['name']);
252
253 $thisfile_iso_pathtable_directories_current['location_bytes'] = $thisfile_iso_pathtable_directories_current['location_logical'] * 2048;
254 if ($pathcounter == 1) {
255 $thisfile_iso_pathtable_directories_current['full_path'] = '/';
256 } else {
257 $thisfile_iso_pathtable_directories_current['full_path'] = $ThisFileInfo['iso']['path_table']['directories'][$thisfile_iso_pathtable_directories_current['parent_directory']]['full_path'].$thisfile_iso_pathtable_directories_current['name_ascii'].'/';
258 }
259 $FullPathArray[] = $thisfile_iso_pathtable_directories_current['full_path'];
260
261 $pathcounter++;
262 }
263
264 return true;
265 }
266
267
268 function ParseDirectoryRecord(&$fd, $directorydata, &$ThisFileInfo) {
269 if (isset($ThisFileInfo['iso']['supplementary_volume_descriptor'])) {
270 $TextEncoding = 'UTF-16BE'; // Big-Endian Unicode
271 } else {
272 $TextEncoding = 'ISO-8859-1'; // Latin-1
273 }
274
275 fseek($fd, $directorydata['location_bytes'], SEEK_SET);
276 $DirectoryRecordData = fread($fd, 1);
277
278 while (ord($DirectoryRecordData{0}) > 33) {
279
280 $DirectoryRecordData .= fread($fd, ord($DirectoryRecordData{0}) - 1);
281
282 $ThisDirectoryRecord['raw']['length'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 0, 1));
283 $ThisDirectoryRecord['raw']['extended_attribute_length'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 1, 1));
284 $ThisDirectoryRecord['raw']['offset_logical'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 2, 4));
285 $ThisDirectoryRecord['raw']['filesize'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 10, 4));
286 $ThisDirectoryRecord['raw']['recording_date_time'] = substr($DirectoryRecordData, 18, 7);
287 $ThisDirectoryRecord['raw']['file_flags'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 25, 1));
288 $ThisDirectoryRecord['raw']['file_unit_size'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 26, 1));
289 $ThisDirectoryRecord['raw']['interleave_gap_size'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 27, 1));
290 $ThisDirectoryRecord['raw']['volume_sequence_number'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 28, 2));
291 $ThisDirectoryRecord['raw']['file_identifier_length'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 32, 1));
292 $ThisDirectoryRecord['raw']['file_identifier'] = substr($DirectoryRecordData, 33, $ThisDirectoryRecord['raw']['file_identifier_length']);
293
294 $ThisDirectoryRecord['file_identifier_ascii'] = getid3_lib::iconv_fallback($TextEncoding, $ThisFileInfo['encoding'], $ThisDirectoryRecord['raw']['file_identifier']);
295
296 $ThisDirectoryRecord['filesize'] = $ThisDirectoryRecord['raw']['filesize'];
297 $ThisDirectoryRecord['offset_bytes'] = $ThisDirectoryRecord['raw']['offset_logical'] * 2048;
298 $ThisDirectoryRecord['file_flags']['hidden'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x01);
299 $ThisDirectoryRecord['file_flags']['directory'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x02);
300 $ThisDirectoryRecord['file_flags']['associated'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x04);
301 $ThisDirectoryRecord['file_flags']['extended'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x08);
302 $ThisDirectoryRecord['file_flags']['permissions'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x10);
303 $ThisDirectoryRecord['file_flags']['multiple'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x80);
304 $ThisDirectoryRecord['recording_timestamp'] = $this->ISOtime2UNIXtime($ThisDirectoryRecord['raw']['recording_date_time']);
305
306 if ($ThisDirectoryRecord['file_flags']['directory']) {
307 $ThisDirectoryRecord['filename'] = $directorydata['full_path'];
308 } else {
309 $ThisDirectoryRecord['filename'] = $directorydata['full_path'].$this->ISOstripFilenameVersion($ThisDirectoryRecord['file_identifier_ascii']);
310 $ThisFileInfo['iso']['files'] = getid3_lib::array_merge_clobber($ThisFileInfo['iso']['files'], getid3_lib::CreateDeepArray($ThisDirectoryRecord['filename'], '/', $ThisDirectoryRecord['filesize']));
311 }
312
313 $DirectoryRecord[] = $ThisDirectoryRecord;
314 $DirectoryRecordData = fread($fd, 1);
315 }
316
317 return $DirectoryRecord;
318 }
319
320 function ISOstripFilenameVersion($ISOfilename) {
321 // convert 'filename.ext;1' to 'filename.ext'
322 if (!strstr($ISOfilename, ';')) {
323 return $ISOfilename;
324 } else {
325 return substr($ISOfilename, 0, strpos($ISOfilename, ';'));
326 }
327 }
328
329 function ISOtimeText2UNIXtime($ISOtime) {
330
331 $UNIXyear = (int) substr($ISOtime, 0, 4);
332 $UNIXmonth = (int) substr($ISOtime, 4, 2);
333 $UNIXday = (int) substr($ISOtime, 6, 2);
334 $UNIXhour = (int) substr($ISOtime, 8, 2);
335 $UNIXminute = (int) substr($ISOtime, 10, 2);
336 $UNIXsecond = (int) substr($ISOtime, 12, 2);
337
338 if (!$UNIXyear) {
339 return false;
340 }
341 return gmmktime($UNIXhour, $UNIXminute, $UNIXsecond, $UNIXmonth, $UNIXday, $UNIXyear);
342 }
343
344 function ISOtime2UNIXtime($ISOtime) {
345 // Represented by seven bytes:
346 // 1: Number of years since 1900
347 // 2: Month of the year from 1 to 12
348 // 3: Day of the Month from 1 to 31
349 // 4: Hour of the day from 0 to 23
350 // 5: Minute of the hour from 0 to 59
351 // 6: second of the minute from 0 to 59
352 // 7: Offset from Greenwich Mean Time in number of 15 minute intervals from -48 (West) to +52 (East)
353
354 $UNIXyear = ord($ISOtime{0}) + 1900;
355 $UNIXmonth = ord($ISOtime{1});
356 $UNIXday = ord($ISOtime{2});
357 $UNIXhour = ord($ISOtime{3});
358 $UNIXminute = ord($ISOtime{4});
359 $UNIXsecond = ord($ISOtime{5});
360 $GMToffset = $this->TwosCompliment2Decimal(ord($ISOtime{5}));
361
362 return gmmktime($UNIXhour, $UNIXminute, $UNIXsecond, $UNIXmonth, $UNIXday, $UNIXyear);
363 }
364
365 function TwosCompliment2Decimal($BinaryValue) {
366 // http://sandbox.mc.edu/~bennet/cs110/tc/tctod.html
367 // First check if the number is negative or positive by looking at the sign bit.
368 // If it is positive, simply convert it to decimal.
369 // If it is negative, make it positive by inverting the bits and adding one.
370 // Then, convert the result to decimal.
371 // The negative of this number is the value of the original binary.
372
373 if ($BinaryValue & 0x80) {
374
375 // negative number
376 return (0 - ((~$BinaryValue & 0xFF) + 1));
377 } else {
378 // positive number
379 return $BinaryValue;
380 }
381 }
382
383
384}
385
386?>
getid3_handler\fseek
fseek($bytes, $whence=SEEK_SET)
Definition: getid3.php:1697
getid3_handler\fread
fread($bytes)
Definition: getid3.php:1685
getid3_iso
getID3() by James Heinrich info@getid3.org //
Definition: module.misc.iso.php:18
getid3_iso\getid3_iso
getid3_iso($fd, &$ThisFileInfo)
Definition: module.misc.iso.php:20
getid3_iso\TwosCompliment2Decimal
TwosCompliment2Decimal($BinaryValue)
Definition: module.misc.iso.php:365
getid3_iso\ParsePathTable
ParsePathTable()
Definition: module.misc.iso.php:212
getid3_iso\ISOtimeText2UNIXtime
ISOtimeText2UNIXtime($ISOtime)
Definition: module.misc.iso.php:329
getid3_iso\ISOtime2UNIXtime
ISOtime2UNIXtime($ISOtime)
Definition: module.misc.iso.php:344
getid3_iso\ParsePrimaryVolumeDescriptor
ParsePrimaryVolumeDescriptor(&$ISOheader, &$ThisFileInfo)
Definition: module.misc.iso.php:59
getid3_iso\ParseDirectoryRecord
ParseDirectoryRecord(&$fd, $directorydata, &$ThisFileInfo)
Definition: module.misc.iso.php:268
getid3_iso\ParsePathTable
ParsePathTable($fd, &$ThisFileInfo)
Definition: module.misc.iso.php:210
getid3_iso\ParseSupplementaryVolumeDescriptor
ParseSupplementaryVolumeDescriptor(&$ISOheader, &$ThisFileInfo)
Definition: module.misc.iso.php:132
getid3_iso\ISOstripFilenameVersion
ISOstripFilenameVersion($ISOfilename)
Definition: module.misc.iso.php:320
getid3_lib\LittleEndian2Int
LittleEndian2Int($byteword, $signed=false)
Definition: getid3.lib.php:266
getid3_lib\CreateDeepArray
CreateDeepArray($ArrayPath, $Separator, $Value)
Definition: getid3.lib.php:465
getid3_lib\array_merge_clobber
array_merge_clobber($array1, $array2)
Definition: getid3.lib.php:358
getid3_lib\iconv_fallback
iconv_fallback($in_charset, $out_charset, $string)
Definition: getid3.lib.php:951