GetId3\Module\Misc\Iso Class Reference
GetId3() by James Heinrich info@.nosp@m.geti.nosp@m.d3.or.nosp@m.g //. More...
Inheritance diagram for GetId3\Module\Misc\Iso:
Collaboration diagram for GetId3\Module\Misc\Iso:
Public Member Functions | |
| analyze () | |
| ParsePrimaryVolumeDescriptor (&$ISOheader) | |
| ParseSupplementaryVolumeDescriptor (&$ISOheader) | |
| ParsePathTable () | |
| ParseDirectoryRecord ($directorydata) | |
| ISOstripFilenameVersion ($ISOfilename) | |
| ISOtimeText2UNIXtime ($ISOtime) | |
| ISOtime2UNIXtime ($ISOtime) | |
| TwosCompliment2Decimal ($BinaryValue) | |
| Public Member Functions inherited from GetId3\Handler\BaseHandler | |
| __construct (GetId3Core $getid3, $call_module=null) | |
| analyze () | |
| Analyze from file pointer. More... | |
| AnalyzeString (&$string) | |
| Analyze from string instead. More... | |
| saveAttachment (&$ThisFileInfoIndex, $filename, $offset, $length) | |
Additional Inherited Members | |
| Protected Member Functions inherited from GetId3\Handler\BaseHandler | |
| ftell () | |
| fread ($bytes) | |
| fseek ($bytes, $whence=SEEK_SET) | |
| feof () | |
| isDependencyFor ($module) | |
| error ($text) | |
| warning ($text) | |
| Protected Attributes inherited from GetId3\Handler\BaseHandler | |
| $getid3 | |
| $data_string_flag = false | |
| $data_string = '' | |
| $data_string_position = 0 | |
| $data_string_length = 0 | |
Detailed Description
GetId3() by James Heinrich info@.nosp@m.geti.nosp@m.d3.or.nosp@m.g //.
module for analyzing ISO files
Member Function Documentation
◆ analyze()
| GetId3\Module\Misc\Iso::analyze | ( | ) |
- Returns
- boolean
Reimplemented from GetId3\Handler\BaseHandler.
Definition at line 36 of file Iso.php.
37 {
38 $info = &$this->getid3->info;
39
41
42 for ($i = 16; $i <= 19; $i++) {
43 fseek($this->getid3->fp, 2048 * $i, SEEK_SET);
44 $ISOheader = fread($this->getid3->fp, 2048);
45 if (substr($ISOheader, 1, 5) == 'CD001') {
46 switch (ord($ISOheader{0})) {
47 case 1:
49 $this->ParsePrimaryVolumeDescriptor($ISOheader);
50 break;
51
52 case 2:
54 $this->ParseSupplementaryVolumeDescriptor($ISOheader);
55 break;
56
57 default:
58 // skip
59 break;
60 }
61 }
62 }
63
64 $this->ParsePathTable();
65
69 }
70
71 return true;
72 }
ParseDirectoryRecord($directorydata)
Definition: Iso.php:307
ParsePrimaryVolumeDescriptor(&$ISOheader)
Definition: Iso.php:79
ParseSupplementaryVolumeDescriptor(&$ISOheader)
Definition: Iso.php:158
References $info, GetId3\Handler\BaseHandler\fread(), GetId3\Handler\BaseHandler\fseek(), GetId3\Module\Misc\Iso\ParseDirectoryRecord(), GetId3\Module\Misc\Iso\ParsePathTable(), GetId3\Module\Misc\Iso\ParsePrimaryVolumeDescriptor(), and GetId3\Module\Misc\Iso\ParseSupplementaryVolumeDescriptor().
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◆ ISOstripFilenameVersion()
| GetId3\Module\Misc\Iso::ISOstripFilenameVersion | ( | $ISOfilename | ) |
◆ ISOtime2UNIXtime()
| GetId3\Module\Misc\Iso::ISOtime2UNIXtime | ( | $ISOtime | ) |
- Parameters
-
type $ISOtime
- Returns
- type
Definition at line 402 of file Iso.php.
403 {
404 // Represented by seven bytes:
405 // 1: Number of years since 1900
406 // 2: Month of the year from 1 to 12
407 // 3: Day of the Month from 1 to 31
408 // 4: Hour of the day from 0 to 23
409 // 5: Minute of the hour from 0 to 59
410 // 6: second of the minute from 0 to 59
411 // 7: Offset from Greenwich Mean Time in number of 15 minute intervals from -48 (West) to +52 (East)
412
413 $UNIXyear = ord($ISOtime{0}) + 1900;
414 $UNIXmonth = ord($ISOtime{1});
415 $UNIXday = ord($ISOtime{2});
416 $UNIXhour = ord($ISOtime{3});
417 $UNIXminute = ord($ISOtime{4});
418 $UNIXsecond = ord($ISOtime{5});
419 $GMToffset = $this->TwosCompliment2Decimal(ord($ISOtime{5}));
420
421 return gmmktime($UNIXhour, $UNIXminute, $UNIXsecond, $UNIXmonth, $UNIXday, $UNIXyear);
422 }
TwosCompliment2Decimal($BinaryValue)
Definition: Iso.php:429
References GetId3\Module\Misc\Iso\TwosCompliment2Decimal().
Referenced by GetId3\Module\Misc\Iso\ParseDirectoryRecord().
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◆ ISOtimeText2UNIXtime()
| GetId3\Module\Misc\Iso::ISOtimeText2UNIXtime | ( | $ISOtime | ) |
- Parameters
-
type $ISOtime
- Returns
- boolean
Definition at line 381 of file Iso.php.
382 {
383 $UNIXyear = (int) substr($ISOtime, 0, 4);
384 $UNIXmonth = (int) substr($ISOtime, 4, 2);
385 $UNIXday = (int) substr($ISOtime, 6, 2);
386 $UNIXhour = (int) substr($ISOtime, 8, 2);
387 $UNIXminute = (int) substr($ISOtime, 10, 2);
388 $UNIXsecond = (int) substr($ISOtime, 12, 2);
389
390 if (!$UNIXyear) {
391 return false;
392 }
393
394 return gmmktime($UNIXhour, $UNIXminute, $UNIXsecond, $UNIXmonth, $UNIXday, $UNIXyear);
395 }
Referenced by GetId3\Module\Misc\Iso\ParsePrimaryVolumeDescriptor(), and GetId3\Module\Misc\Iso\ParseSupplementaryVolumeDescriptor().
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◆ ParseDirectoryRecord()
| GetId3\Module\Misc\Iso::ParseDirectoryRecord | ( | $directorydata | ) |
- Parameters
-
type $directorydata
- Returns
- string
Definition at line 307 of file Iso.php.
308 {
309 $info = &$this->getid3->info;
311 $TextEncoding = 'UTF-16BE'; // Big-Endian Unicode
312 } else {
313 $TextEncoding = 'ISO-8859-1'; // Latin-1
314 }
315
317 $DirectoryRecordData = fread($this->getid3->fp, 1);
318
319 while (ord($DirectoryRecordData{0}) > 33) {
320
321 $DirectoryRecordData .= fread($this->getid3->fp, ord($DirectoryRecordData{0}) - 1);
322
323 $ThisDirectoryRecord['raw']['length'] = Helper::LittleEndian2Int(substr($DirectoryRecordData, 0, 1));
324 $ThisDirectoryRecord['raw']['extended_attribute_length'] = Helper::LittleEndian2Int(substr($DirectoryRecordData, 1, 1));
325 $ThisDirectoryRecord['raw']['offset_logical'] = Helper::LittleEndian2Int(substr($DirectoryRecordData, 2, 4));
326 $ThisDirectoryRecord['raw']['filesize'] = Helper::LittleEndian2Int(substr($DirectoryRecordData, 10, 4));
327 $ThisDirectoryRecord['raw']['recording_date_time'] = substr($DirectoryRecordData, 18, 7);
328 $ThisDirectoryRecord['raw']['file_flags'] = Helper::LittleEndian2Int(substr($DirectoryRecordData, 25, 1));
329 $ThisDirectoryRecord['raw']['file_unit_size'] = Helper::LittleEndian2Int(substr($DirectoryRecordData, 26, 1));
330 $ThisDirectoryRecord['raw']['interleave_gap_size'] = Helper::LittleEndian2Int(substr($DirectoryRecordData, 27, 1));
331 $ThisDirectoryRecord['raw']['volume_sequence_number'] = Helper::LittleEndian2Int(substr($DirectoryRecordData, 28, 2));
332 $ThisDirectoryRecord['raw']['file_identifier_length'] = Helper::LittleEndian2Int(substr($DirectoryRecordData, 32, 1));
333 $ThisDirectoryRecord['raw']['file_identifier'] = substr($DirectoryRecordData, 33, $ThisDirectoryRecord['raw']['file_identifier_length']);
334
335 $ThisDirectoryRecord['file_identifier_ascii'] = Helper::iconv_fallback($TextEncoding, $info['encoding'], $ThisDirectoryRecord['raw']['file_identifier']);
336
337 $ThisDirectoryRecord['filesize'] = $ThisDirectoryRecord['raw']['filesize'];
338 $ThisDirectoryRecord['offset_bytes'] = $ThisDirectoryRecord['raw']['offset_logical'] * 2048;
339 $ThisDirectoryRecord['file_flags']['hidden'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x01);
340 $ThisDirectoryRecord['file_flags']['directory'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x02);
341 $ThisDirectoryRecord['file_flags']['associated'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x04);
342 $ThisDirectoryRecord['file_flags']['extended'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x08);
343 $ThisDirectoryRecord['file_flags']['permissions'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x10);
344 $ThisDirectoryRecord['file_flags']['multiple'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x80);
345 $ThisDirectoryRecord['recording_timestamp'] = $this->ISOtime2UNIXtime($ThisDirectoryRecord['raw']['recording_date_time']);
346
347 if ($ThisDirectoryRecord['file_flags']['directory']) {
348 $ThisDirectoryRecord['filename'] = $directorydata['full_path'];
349 } else {
350 $ThisDirectoryRecord['filename'] = $directorydata['full_path'].$this->ISOstripFilenameVersion($ThisDirectoryRecord['file_identifier_ascii']);
351 $info['iso']['files'] = Helper::array_merge_clobber($info['iso']['files'], Helper::CreateDeepArray($ThisDirectoryRecord['filename'], '/', $ThisDirectoryRecord['filesize']));
352 }
353
354 $DirectoryRecord[] = $ThisDirectoryRecord;
355 $DirectoryRecordData = fread($this->getid3->fp, 1);
356 }
357
358 return $DirectoryRecord;
359 }
static array_merge_clobber($array1, $array2)
Definition: Helper.php:561
static iconv_fallback($in_charset, $out_charset, $string)
@staticvar array $ConversionFunctionList
Definition: Helper.php:1375
static LittleEndian2Int($byteword, $signed=false)
Definition: Helper.php:413
static CreateDeepArray($ArrayPath, $Separator, $Value)
Definition: Helper.php:726
References $info, GetId3\Lib\Helper\array_merge_clobber(), GetId3\Lib\Helper\CreateDeepArray(), GetId3\Handler\BaseHandler\fread(), GetId3\Handler\BaseHandler\fseek(), GetId3\Lib\Helper\iconv_fallback(), GetId3\Module\Misc\Iso\ISOtime2UNIXtime(), and GetId3\Lib\Helper\LittleEndian2Int().
Referenced by GetId3\Module\Misc\Iso\analyze().
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◆ ParsePathTable()
| GetId3\Module\Misc\Iso::ParsePathTable | ( | ) |
- Returns
- boolean
Definition at line 242 of file Iso.php.
243 {
244 $info = &$this->getid3->info;
245 if (!isset($info['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location']) && !isset($info['iso']['primary_volume_descriptor']['raw']['path_table_l_location'])) {
246 return false;
247 }
249 $PathTableLocation = $info['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location'];
251 $TextEncoding = 'UTF-16BE'; // Big-Endian Unicode
252 } else {
255 $TextEncoding = 'ISO-8859-1'; // Latin-1
256 }
257
259 $info['error'][] = 'Path Table Location specifies an offset ('.($PathTableLocation * 2048).') beyond the end-of-file ('.$info['filesize'].')';
260
261 return false;
262 }
263
267
268 $offset = 0;
269 $pathcounter = 1;
270 while ($offset < $PathTableSize) {
271 // shortcut
273 $thisfile_iso_pathtable_directories_current = &$info['iso']['path_table']['directories'][$pathcounter];
274
275 $thisfile_iso_pathtable_directories_current['length'] = Helper::LittleEndian2Int(substr($info['iso']['path_table']['raw'], $offset, 1));
276 $offset += 1;
277 $thisfile_iso_pathtable_directories_current['extended_length'] = Helper::LittleEndian2Int(substr($info['iso']['path_table']['raw'], $offset, 1));
278 $offset += 1;
279 $thisfile_iso_pathtable_directories_current['location_logical'] = Helper::LittleEndian2Int(substr($info['iso']['path_table']['raw'], $offset, 4));
280 $offset += 4;
281 $thisfile_iso_pathtable_directories_current['parent_directory'] = Helper::LittleEndian2Int(substr($info['iso']['path_table']['raw'], $offset, 2));
282 $offset += 2;
283 $thisfile_iso_pathtable_directories_current['name'] = substr($info['iso']['path_table']['raw'], $offset, $thisfile_iso_pathtable_directories_current['length']);
284 $offset += $thisfile_iso_pathtable_directories_current['length'] + ($thisfile_iso_pathtable_directories_current['length'] % 2);
285
286 $thisfile_iso_pathtable_directories_current['name_ascii'] = Helper::iconv_fallback($TextEncoding, $info['encoding'], $thisfile_iso_pathtable_directories_current['name']);
287
288 $thisfile_iso_pathtable_directories_current['location_bytes'] = $thisfile_iso_pathtable_directories_current['location_logical'] * 2048;
289 if ($pathcounter == 1) {
290 $thisfile_iso_pathtable_directories_current['full_path'] = '/';
291 } else {
292 $thisfile_iso_pathtable_directories_current['full_path'] = $info['iso']['path_table']['directories'][$thisfile_iso_pathtable_directories_current['parent_directory']]['full_path'].$thisfile_iso_pathtable_directories_current['name_ascii'].'/';
293 }
294 $FullPathArray[] = $thisfile_iso_pathtable_directories_current['full_path'];
295
296 $pathcounter++;
297 }
298
299 return true;
300 }
References $info, GetId3\Handler\BaseHandler\fread(), GetId3\Handler\BaseHandler\fseek(), GetId3\Lib\Helper\iconv_fallback(), and GetId3\Lib\Helper\LittleEndian2Int().
Referenced by GetId3\Module\Misc\Iso\analyze().
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◆ ParsePrimaryVolumeDescriptor()
| GetId3\Module\Misc\Iso::ParsePrimaryVolumeDescriptor | ( | & | $ISOheader | ) |
- Parameters
-
type $ISOheader
- Returns
- boolean
Definition at line 79 of file Iso.php.
80 {
81 // ISO integer values are stored *BOTH* Little-Endian AND Big-Endian format!!
82 // ie 12345 == 0x3039 is stored as $39 $30 $30 $39 in a 4-byte field
83
84 // shortcuts
85 $info = &$this->getid3->info;
88 $thisfile_iso_primaryVD_raw = &$thisfile_iso_primaryVD['raw'];
89
90 $thisfile_iso_primaryVD_raw['volume_descriptor_type'] = Helper::LittleEndian2Int(substr($ISOheader, 0, 1));
91 $thisfile_iso_primaryVD_raw['standard_identifier'] = substr($ISOheader, 1, 5);
92 if ($thisfile_iso_primaryVD_raw['standard_identifier'] != 'CD001') {
93 $info['error'][] = 'Expected "CD001" at offset ('.($thisfile_iso_primaryVD['offset'] + 1).'), found "'.$thisfile_iso_primaryVD_raw['standard_identifier'].'" instead';
96
97 return false;
98 }
99
100 $thisfile_iso_primaryVD_raw['volume_descriptor_version'] = Helper::LittleEndian2Int(substr($ISOheader, 6, 1));
101 //$thisfile_iso_primaryVD_raw['unused_1'] = substr($ISOheader, 7, 1);
102 $thisfile_iso_primaryVD_raw['system_identifier'] = substr($ISOheader, 8, 32);
103 $thisfile_iso_primaryVD_raw['volume_identifier'] = substr($ISOheader, 40, 32);
104 //$thisfile_iso_primaryVD_raw['unused_2'] = substr($ISOheader, 72, 8);
105 $thisfile_iso_primaryVD_raw['volume_space_size'] = Helper::LittleEndian2Int(substr($ISOheader, 80, 4));
106 //$thisfile_iso_primaryVD_raw['unused_3'] = substr($ISOheader, 88, 32);
107 $thisfile_iso_primaryVD_raw['volume_set_size'] = Helper::LittleEndian2Int(substr($ISOheader, 120, 2));
108 $thisfile_iso_primaryVD_raw['volume_sequence_number'] = Helper::LittleEndian2Int(substr($ISOheader, 124, 2));
109 $thisfile_iso_primaryVD_raw['logical_block_size'] = Helper::LittleEndian2Int(substr($ISOheader, 128, 2));
110 $thisfile_iso_primaryVD_raw['path_table_size'] = Helper::LittleEndian2Int(substr($ISOheader, 132, 4));
111 $thisfile_iso_primaryVD_raw['path_table_l_location'] = Helper::LittleEndian2Int(substr($ISOheader, 140, 2));
112 $thisfile_iso_primaryVD_raw['path_table_l_opt_location'] = Helper::LittleEndian2Int(substr($ISOheader, 144, 2));
113 $thisfile_iso_primaryVD_raw['path_table_m_location'] = Helper::LittleEndian2Int(substr($ISOheader, 148, 2));
114 $thisfile_iso_primaryVD_raw['path_table_m_opt_location'] = Helper::LittleEndian2Int(substr($ISOheader, 152, 2));
115 $thisfile_iso_primaryVD_raw['root_directory_record'] = substr($ISOheader, 156, 34);
116 $thisfile_iso_primaryVD_raw['volume_set_identifier'] = substr($ISOheader, 190, 128);
117 $thisfile_iso_primaryVD_raw['publisher_identifier'] = substr($ISOheader, 318, 128);
118 $thisfile_iso_primaryVD_raw['data_preparer_identifier'] = substr($ISOheader, 446, 128);
119 $thisfile_iso_primaryVD_raw['application_identifier'] = substr($ISOheader, 574, 128);
120 $thisfile_iso_primaryVD_raw['copyright_file_identifier'] = substr($ISOheader, 702, 37);
121 $thisfile_iso_primaryVD_raw['abstract_file_identifier'] = substr($ISOheader, 739, 37);
122 $thisfile_iso_primaryVD_raw['bibliographic_file_identifier'] = substr($ISOheader, 776, 37);
123 $thisfile_iso_primaryVD_raw['volume_creation_date_time'] = substr($ISOheader, 813, 17);
124 $thisfile_iso_primaryVD_raw['volume_modification_date_time'] = substr($ISOheader, 830, 17);
125 $thisfile_iso_primaryVD_raw['volume_expiration_date_time'] = substr($ISOheader, 847, 17);
126 $thisfile_iso_primaryVD_raw['volume_effective_date_time'] = substr($ISOheader, 864, 17);
127 $thisfile_iso_primaryVD_raw['file_structure_version'] = Helper::LittleEndian2Int(substr($ISOheader, 881, 1));
128 //$thisfile_iso_primaryVD_raw['unused_4'] = GetId3_lib::LittleEndian2Int(substr($ISOheader, 882, 1));
129 $thisfile_iso_primaryVD_raw['application_data'] = substr($ISOheader, 883, 512);
130 //$thisfile_iso_primaryVD_raw['unused_5'] = substr($ISOheader, 1395, 653);
131
132 $thisfile_iso_primaryVD['system_identifier'] = trim($thisfile_iso_primaryVD_raw['system_identifier']);
133 $thisfile_iso_primaryVD['volume_identifier'] = trim($thisfile_iso_primaryVD_raw['volume_identifier']);
134 $thisfile_iso_primaryVD['volume_set_identifier'] = trim($thisfile_iso_primaryVD_raw['volume_set_identifier']);
135 $thisfile_iso_primaryVD['publisher_identifier'] = trim($thisfile_iso_primaryVD_raw['publisher_identifier']);
136 $thisfile_iso_primaryVD['data_preparer_identifier'] = trim($thisfile_iso_primaryVD_raw['data_preparer_identifier']);
137 $thisfile_iso_primaryVD['application_identifier'] = trim($thisfile_iso_primaryVD_raw['application_identifier']);
138 $thisfile_iso_primaryVD['copyright_file_identifier'] = trim($thisfile_iso_primaryVD_raw['copyright_file_identifier']);
139 $thisfile_iso_primaryVD['abstract_file_identifier'] = trim($thisfile_iso_primaryVD_raw['abstract_file_identifier']);
140 $thisfile_iso_primaryVD['bibliographic_file_identifier'] = trim($thisfile_iso_primaryVD_raw['bibliographic_file_identifier']);
141 $thisfile_iso_primaryVD['volume_creation_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_creation_date_time']);
142 $thisfile_iso_primaryVD['volume_modification_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_modification_date_time']);
143 $thisfile_iso_primaryVD['volume_expiration_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_expiration_date_time']);
144 $thisfile_iso_primaryVD['volume_effective_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_effective_date_time']);
145
147 $info['error'][] = 'Volume Space Size ('.($thisfile_iso_primaryVD_raw['volume_space_size'] * 2048).' bytes) is larger than the file size ('.$info['filesize'].' bytes) (truncated file?)';
148 }
149
150 return true;
151 }
References $info, GetId3\Module\Misc\Iso\ISOtimeText2UNIXtime(), and GetId3\Lib\Helper\LittleEndian2Int().
Referenced by GetId3\Module\Misc\Iso\analyze().
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◆ ParseSupplementaryVolumeDescriptor()
| GetId3\Module\Misc\Iso::ParseSupplementaryVolumeDescriptor | ( | & | $ISOheader | ) |
- Parameters
-
type $ISOheader
- Returns
- boolean
Definition at line 158 of file Iso.php.
159 {
160 // ISO integer values are stored Both-Endian format!!
161 // ie 12345 == 0x3039 is stored as $39 $30 $30 $39 in a 4-byte field
162
163 // shortcuts
164 $info = &$this->getid3->info;
167 $thisfile_iso_supplementaryVD_raw = &$thisfile_iso_supplementaryVD['raw'];
168
169 $thisfile_iso_supplementaryVD_raw['volume_descriptor_type'] = Helper::LittleEndian2Int(substr($ISOheader, 0, 1));
170 $thisfile_iso_supplementaryVD_raw['standard_identifier'] = substr($ISOheader, 1, 5);
171 if ($thisfile_iso_supplementaryVD_raw['standard_identifier'] != 'CD001') {
172 $info['error'][] = 'Expected "CD001" at offset ('.($thisfile_iso_supplementaryVD['offset'] + 1).'), found "'.$thisfile_iso_supplementaryVD_raw['standard_identifier'].'" instead';
175
176 return false;
177 }
178
179 $thisfile_iso_supplementaryVD_raw['volume_descriptor_version'] = Helper::LittleEndian2Int(substr($ISOheader, 6, 1));
180 //$thisfile_iso_supplementaryVD_raw['unused_1'] = substr($ISOheader, 7, 1);
181 $thisfile_iso_supplementaryVD_raw['system_identifier'] = substr($ISOheader, 8, 32);
182 $thisfile_iso_supplementaryVD_raw['volume_identifier'] = substr($ISOheader, 40, 32);
183 //$thisfile_iso_supplementaryVD_raw['unused_2'] = substr($ISOheader, 72, 8);
184 $thisfile_iso_supplementaryVD_raw['volume_space_size'] = Helper::LittleEndian2Int(substr($ISOheader, 80, 4));
185 if ($thisfile_iso_supplementaryVD_raw['volume_space_size'] == 0) {
186 // Supplementary Volume Descriptor not used
187 //unset($thisfile_iso_supplementaryVD);
188 //return false;
189 }
190
191 //$thisfile_iso_supplementaryVD_raw['unused_3'] = substr($ISOheader, 88, 32);
192 $thisfile_iso_supplementaryVD_raw['volume_set_size'] = Helper::LittleEndian2Int(substr($ISOheader, 120, 2));
193 $thisfile_iso_supplementaryVD_raw['volume_sequence_number'] = Helper::LittleEndian2Int(substr($ISOheader, 124, 2));
194 $thisfile_iso_supplementaryVD_raw['logical_block_size'] = Helper::LittleEndian2Int(substr($ISOheader, 128, 2));
195 $thisfile_iso_supplementaryVD_raw['path_table_size'] = Helper::LittleEndian2Int(substr($ISOheader, 132, 4));
196 $thisfile_iso_supplementaryVD_raw['path_table_l_location'] = Helper::LittleEndian2Int(substr($ISOheader, 140, 2));
197 $thisfile_iso_supplementaryVD_raw['path_table_l_opt_location'] = Helper::LittleEndian2Int(substr($ISOheader, 144, 2));
198 $thisfile_iso_supplementaryVD_raw['path_table_m_location'] = Helper::LittleEndian2Int(substr($ISOheader, 148, 2));
199 $thisfile_iso_supplementaryVD_raw['path_table_m_opt_location'] = Helper::LittleEndian2Int(substr($ISOheader, 152, 2));
200 $thisfile_iso_supplementaryVD_raw['root_directory_record'] = substr($ISOheader, 156, 34);
201 $thisfile_iso_supplementaryVD_raw['volume_set_identifier'] = substr($ISOheader, 190, 128);
202 $thisfile_iso_supplementaryVD_raw['publisher_identifier'] = substr($ISOheader, 318, 128);
203 $thisfile_iso_supplementaryVD_raw['data_preparer_identifier'] = substr($ISOheader, 446, 128);
204 $thisfile_iso_supplementaryVD_raw['application_identifier'] = substr($ISOheader, 574, 128);
205 $thisfile_iso_supplementaryVD_raw['copyright_file_identifier'] = substr($ISOheader, 702, 37);
206 $thisfile_iso_supplementaryVD_raw['abstract_file_identifier'] = substr($ISOheader, 739, 37);
207 $thisfile_iso_supplementaryVD_raw['bibliographic_file_identifier'] = substr($ISOheader, 776, 37);
208 $thisfile_iso_supplementaryVD_raw['volume_creation_date_time'] = substr($ISOheader, 813, 17);
209 $thisfile_iso_supplementaryVD_raw['volume_modification_date_time'] = substr($ISOheader, 830, 17);
210 $thisfile_iso_supplementaryVD_raw['volume_expiration_date_time'] = substr($ISOheader, 847, 17);
211 $thisfile_iso_supplementaryVD_raw['volume_effective_date_time'] = substr($ISOheader, 864, 17);
212 $thisfile_iso_supplementaryVD_raw['file_structure_version'] = Helper::LittleEndian2Int(substr($ISOheader, 881, 1));
213 //$thisfile_iso_supplementaryVD_raw['unused_4'] = GetId3_lib::LittleEndian2Int(substr($ISOheader, 882, 1));
214 $thisfile_iso_supplementaryVD_raw['application_data'] = substr($ISOheader, 883, 512);
215 //$thisfile_iso_supplementaryVD_raw['unused_5'] = substr($ISOheader, 1395, 653);
216
217 $thisfile_iso_supplementaryVD['system_identifier'] = trim($thisfile_iso_supplementaryVD_raw['system_identifier']);
218 $thisfile_iso_supplementaryVD['volume_identifier'] = trim($thisfile_iso_supplementaryVD_raw['volume_identifier']);
219 $thisfile_iso_supplementaryVD['volume_set_identifier'] = trim($thisfile_iso_supplementaryVD_raw['volume_set_identifier']);
220 $thisfile_iso_supplementaryVD['publisher_identifier'] = trim($thisfile_iso_supplementaryVD_raw['publisher_identifier']);
221 $thisfile_iso_supplementaryVD['data_preparer_identifier'] = trim($thisfile_iso_supplementaryVD_raw['data_preparer_identifier']);
222 $thisfile_iso_supplementaryVD['application_identifier'] = trim($thisfile_iso_supplementaryVD_raw['application_identifier']);
223 $thisfile_iso_supplementaryVD['copyright_file_identifier'] = trim($thisfile_iso_supplementaryVD_raw['copyright_file_identifier']);
224 $thisfile_iso_supplementaryVD['abstract_file_identifier'] = trim($thisfile_iso_supplementaryVD_raw['abstract_file_identifier']);
225 $thisfile_iso_supplementaryVD['bibliographic_file_identifier'] = trim($thisfile_iso_supplementaryVD_raw['bibliographic_file_identifier']);
226 $thisfile_iso_supplementaryVD['volume_creation_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_creation_date_time']);
227 $thisfile_iso_supplementaryVD['volume_modification_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_modification_date_time']);
228 $thisfile_iso_supplementaryVD['volume_expiration_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_expiration_date_time']);
229 $thisfile_iso_supplementaryVD['volume_effective_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_effective_date_time']);
230
231 if (($thisfile_iso_supplementaryVD_raw['volume_space_size'] * $thisfile_iso_supplementaryVD_raw['logical_block_size']) > $info['filesize']) {
232 $info['error'][] = 'Volume Space Size ('.($thisfile_iso_supplementaryVD_raw['volume_space_size'] * $thisfile_iso_supplementaryVD_raw['logical_block_size']).' bytes) is larger than the file size ('.$info['filesize'].' bytes) (truncated file?)';
233 }
234
235 return true;
236 }
References $info, GetId3\Module\Misc\Iso\ISOtimeText2UNIXtime(), and GetId3\Lib\Helper\LittleEndian2Int().
Referenced by GetId3\Module\Misc\Iso\analyze().
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◆ TwosCompliment2Decimal()
| GetId3\Module\Misc\Iso::TwosCompliment2Decimal | ( | $BinaryValue | ) |
- Parameters
-
type $BinaryValue
- Returns
- type
Definition at line 429 of file Iso.php.
430 {
431 // http://sandbox.mc.edu/~bennet/cs110/tc/tctod.html
432 // First check if the number is negative or positive by looking at the sign bit.
433 // If it is positive, simply convert it to decimal.
434 // If it is negative, make it positive by inverting the bits and adding one.
435 // Then, convert the result to decimal.
436 // The negative of this number is the value of the original binary.
437
438 if ($BinaryValue & 0x80) {
439
440 // negative number
441 return (0 - ((~$BinaryValue & 0xFF) + 1));
442 } else {
443 // positive number
444 return $BinaryValue;
445 }
446 }
Referenced by GetId3\Module\Misc\Iso\ISOtime2UNIXtime().
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The documentation for this class was generated from the following file:
- libs/composer/vendor/phansys/getid3/GetId3/Module/Misc/Iso.php
