- Timestamp:
- Jul 7, 2009, 10:27:37 PM (15 years ago)
- File:
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extensions/charlies_content/getid3/getid3/module.misc.iso.php
r3318 r3544 1 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 // $Id$ 23 24 25 26 class getid3_iso extends getid3_handler 2 ///////////////////////////////////////////////////////////////// 3 /// getID3() by James Heinrich <info@getid3.org> // 4 // available at http://getid3.sourceforge.net // 5 // or http://www.getid3.org // 6 ///////////////////////////////////////////////////////////////// 7 // See readme.txt for more details // 8 ///////////////////////////////////////////////////////////////// 9 // // 10 // module.misc.iso.php // 11 // module for analyzing ISO files // 12 // dependencies: NONE // 13 // /// 14 ///////////////////////////////////////////////////////////////// 15 16 17 class getid3_iso 27 18 { 28 19 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 => $value); 446 } 20 function getid3_iso($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 } 382 447 383 448 384 }
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