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view e2gallerypro/e2upload/Backend/Assets/getid3/module.misc.iso.php @ 20:1038db2374ec judyates
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author | Robert McIntyre <rlm@mit.edu> |
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date | Sun, 08 Sep 2013 00:47:09 -0400 |
parents | 3f6b44aa6b35 |
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1 <?php2 // +----------------------------------------------------------------------+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,v 1.3 2006/11/02 10:48:02 ah Exp $26 class getid3_iso extends getid3_handler27 {29 public function Analyze() {31 $getid3 = $this->getid3;33 $getid3->info['fileformat'] = 'iso';35 for ($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;45 case 2:46 $getid3->info['iso']['supplementary_volume_descriptor']['offset'] = 2048 * $i;47 $this->ParseSupplementaryVolumeDescriptor($iso_header);48 break;50 default:51 // skip52 break;53 }54 }55 }57 $this->ParsePathTable();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 }64 return true;65 }69 private function ParsePrimaryVolumeDescriptor(&$iso_header) {71 $getid3 = $this->getid3;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 field76 $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'];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 }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, // string91 'volume_identifier' => -32, // string92 '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, // string113 'volume_set_identifier' => -128, // string114 'publisher_identifier' => -128, // string115 'data_preparer_identifier' => -128, // string116 'application_identifier' => -128, // string117 'copyright_file_identifier' => -37, // string118 'abstract_file_identifier' => -37, // string119 'bibliographic_file_identifier' => -37, // string120 'volume_creation_date_time' => -17, // string121 'volume_modification_date_time' => -17, // string122 'volume_expiration_date_time' => -17, // string123 'volume_effective_date_time' => -17, // string124 'file_structure_version' => 1,125 'IGNORE-unused_4' => 1,126 'application_data' => -512 // string127 )128 );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']);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']);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 ('.$getid3->info['filesize'].' bytes) (truncated file?)');147 }149 return true;150 }154 private function ParseSupplementaryVolumeDescriptor(&$iso_header) {156 $getid3 = $this->getid3;158 // ISO integer values are stored Both-Endian format!!159 // ie 12345 == 0x3039 is stored as $39 $30 $30 $39 in a 4-byte field161 $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'];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 }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' => -512212 )213 );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']);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']);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 }234 return true;235 }239 private function ParsePathTable() {241 $getid3 = $this->getid3;243 if (!isset($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 Unicode250 }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 $text_encoding = 'ISO-8859-1'; // Latin-1255 }257 if (($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 }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);265 $offset = 0;266 $pathcounter = 1;267 while ($offset < $path_table_size) {269 $getid3->info['iso']['path_table']['directories'][$pathcounter] = array ();270 $info_iso_pathtable_directories_current = &$getid3->info['iso']['path_table']['directories'][$pathcounter];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 );281 $info_iso_pathtable_directories_current['name'] = substr($getid3->info['iso']['path_table']['raw'], $offset+8, $info_iso_pathtable_directories_current['length']);283 $offset += 8 + $info_iso_pathtable_directories_current['length'] + ($info_iso_pathtable_directories_current['length'] % 2);285 $info_iso_pathtable_directories_current['name_ascii'] = $getid3->iconv($text_encoding, $getid3->encoding, $info_iso_pathtable_directories_current['name'], true);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'];296 $pathcounter++;297 }299 return true;300 }304 private function ParseDirectoryRecord($directory_data) {306 $getid3 = $this->getid3;308 $text_encoding = isset($getid3->info['iso']['supplementary_volume_descriptor']) ? 'UTF-16BE' : 'ISO-8859-1';310 fseek($getid3->fp, $directory_data['location_bytes'], SEEK_SET);311 $directory_record_data = fread($getid3->fp, 1);313 while (ord($directory_record_data{0}) > 33) {315 $directory_record_data .= fread($getid3->fp, ord($directory_record_data{0}) - 1);317 $this_directory_record = array ();318 $this_directory_record['raw'] = array ();319 $this_directory_record_raw = &$this_directory_record['raw'];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 );339 $this_directory_record_raw['file_identifier'] = substr($directory_record_data, 33, $this_directory_record_raw['file_identifier_length']);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']);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 }360 $directory_record[] = $this_directory_record;361 $directory_record_data = fread($getid3->fp, 1);362 }364 return $directory_record;365 }369 public static function ISOstripFilenameVersion($iso_filename) {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($iso_filename, ';'));376 }380 public static function ISOtimeText2UNIXtime($iso_time) {382 if (!(int)substr($iso_time, 0, 4)) {383 return false;384 }386 return gmmktime((int)substr($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($iso_time, 0, 4));387 }391 public static function ISOtime2UNIXtime($iso_time) {393 // Represented by seven bytes:394 // 1: Number of years since 1900395 // 2: Month of the year from 1 to 12396 // 3: Day of the Month from 1 to 31397 // 4: Hour of the day from 0 to 23398 // 5: Minute of the hour from 0 to 59399 // 6: second of the minute from 0 to 59400 // 7: Offset from Greenwich Mean Time in number of 15 minute intervals from -48 (West) to +52 (East)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 }407 public static function array_merge_clobber($array1, $array2) {409 // written by kcØhireability*com410 // taken from http://www.php.net/manual/en/function.array-merge-recursive.php412 if (!is_array($array1) || !is_array($array2)) {413 return false;414 }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 $newarray;425 }429 public static function CreateDeepArray($array_path, $separator, $value) {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 // or436 // $foo['path']['to']['my'] = 'file.txt';438 while ($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, $value));443 }445 return array ($array_path => $value);446 }448 }450 ?>