ILIAS  release_5-4 Revision v5.4.26-12-gabc799a52e6
Public Member Functions
getid3_iso Class Reference

getID3() by James Heinrich info@.nosp@m.geti.nosp@m.d3.or.nosp@m.g // More...

+ Inheritance diagram for getid3_iso:
+ Collaboration diagram for getid3_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
 __construct (getID3 $getid3, $call_module=null)
 
 Analyze ()
 
 AnalyzeString ($string)
 
 setStringMode ($string)
 
 saveAttachment ($name, $offset, $length, $image_mime=null)
 

Additional Inherited Members

- Protected Member Functions inherited from getid3_handler
 ftell ()
 
 fread ($bytes)
 
 fseek ($bytes, $whence=SEEK_SET)
 
 feof ()
 
 isDependencyFor ($module)
 
 error ($text)
 
 warning ($text)
 
 notice ($text)
 
- Protected Attributes inherited from getid3_handler
 $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 //

Definition at line 18 of file module.misc.iso.php.

Member Function Documentation

◆ Analyze()

getid3_iso::Analyze ( )

Reimplemented from getid3_handler.

Definition at line 21 of file module.misc.iso.php.

21 {
22 $info = &$this->getid3->info;
23
24 $info['fileformat'] = 'iso';
25
26 for ($i = 16; $i <= 19; $i++) {
27 $this->fseek(2048 * $i);
28 $ISOheader = $this->fread(2048);
29 if (substr($ISOheader, 1, 5) == 'CD001') {
30 switch (ord($ISOheader{0})) {
31 case 1:
32 $info['iso']['primary_volume_descriptor']['offset'] = 2048 * $i;
33 $this->ParsePrimaryVolumeDescriptor($ISOheader);
34 break;
35
36 case 2:
37 $info['iso']['supplementary_volume_descriptor']['offset'] = 2048 * $i;
38 $this->ParseSupplementaryVolumeDescriptor($ISOheader);
39 break;
40
41 default:
42 // skip
43 break;
44 }
45 }
46 }
47
48 $this->ParsePathTable();
49
50 $info['iso']['files'] = array();
51 foreach ($info['iso']['path_table']['directories'] as $directorynum => $directorydata) {
52 $info['iso']['directories'][$directorynum] = $this->ParseDirectoryRecord($directorydata);
53 }
54
55 return true;
56 }
getid3_handler\fseek
fseek($bytes, $whence=SEEK_SET)
Definition: getid3.php:1711
getid3_handler\fread
fread($bytes)
Definition: getid3.php:1683
getid3_iso\ParsePrimaryVolumeDescriptor
ParsePrimaryVolumeDescriptor(&$ISOheader)
Definition: module.misc.iso.php:59
getid3_iso\ParseSupplementaryVolumeDescriptor
ParseSupplementaryVolumeDescriptor(&$ISOheader)
Definition: module.misc.iso.php:133
getid3_iso\ParseDirectoryRecord
ParseDirectoryRecord($directorydata)
Definition: module.misc.iso.php:271
getid3_iso\ParsePathTable
ParsePathTable()
Definition: module.misc.iso.php:212
$i
$i
Definition: disco.tpl.php:19
$info
$info
Definition: index.php:5

References $i, $info, getid3_handler\fread(), getid3_handler\fseek(), ParseDirectoryRecord(), ParsePathTable(), ParsePrimaryVolumeDescriptor(), and ParseSupplementaryVolumeDescriptor().

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◆ ISOstripFilenameVersion()

getid3_iso::ISOstripFilenameVersion (   $ISOfilename)

Definition at line 324 of file module.misc.iso.php.

324 {
325 // convert 'filename.ext;1' to 'filename.ext'
326 if (!strstr($ISOfilename, ';')) {
327 return $ISOfilename;
328 } else {
329 return substr($ISOfilename, 0, strpos($ISOfilename, ';'));
330 }
331 }

◆ ISOtime2UNIXtime()

getid3_iso::ISOtime2UNIXtime (   $ISOtime)

Definition at line 348 of file module.misc.iso.php.

348 {
349 // Represented by seven bytes:
350 // 1: Number of years since 1900
351 // 2: Month of the year from 1 to 12
352 // 3: Day of the Month from 1 to 31
353 // 4: Hour of the day from 0 to 23
354 // 5: Minute of the hour from 0 to 59
355 // 6: second of the minute from 0 to 59
356 // 7: Offset from Greenwich Mean Time in number of 15 minute intervals from -48 (West) to +52 (East)
357
358 $UNIXyear = ord($ISOtime{0}) + 1900;
359 $UNIXmonth = ord($ISOtime{1});
360 $UNIXday = ord($ISOtime{2});
361 $UNIXhour = ord($ISOtime{3});
362 $UNIXminute = ord($ISOtime{4});
363 $UNIXsecond = ord($ISOtime{5});
364 $GMToffset = $this->TwosCompliment2Decimal(ord($ISOtime{5}));
365
366 return gmmktime($UNIXhour, $UNIXminute, $UNIXsecond, $UNIXmonth, $UNIXday, $UNIXyear);
367 }
getid3_iso\TwosCompliment2Decimal
TwosCompliment2Decimal($BinaryValue)
Definition: module.misc.iso.php:369

References TwosCompliment2Decimal().

Referenced by ParseDirectoryRecord().

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◆ ISOtimeText2UNIXtime()

getid3_iso::ISOtimeText2UNIXtime (   $ISOtime)

Definition at line 333 of file module.misc.iso.php.

333 {
334
335 $UNIXyear = (int) substr($ISOtime, 0, 4);
336 $UNIXmonth = (int) substr($ISOtime, 4, 2);
337 $UNIXday = (int) substr($ISOtime, 6, 2);
338 $UNIXhour = (int) substr($ISOtime, 8, 2);
339 $UNIXminute = (int) substr($ISOtime, 10, 2);
340 $UNIXsecond = (int) substr($ISOtime, 12, 2);
341
342 if (!$UNIXyear) {
343 return false;
344 }
345 return gmmktime($UNIXhour, $UNIXminute, $UNIXsecond, $UNIXmonth, $UNIXday, $UNIXyear);
346 }

Referenced by ParsePrimaryVolumeDescriptor(), and ParseSupplementaryVolumeDescriptor().

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◆ ParseDirectoryRecord()

getid3_iso::ParseDirectoryRecord (   $directorydata)

Definition at line 271 of file module.misc.iso.php.

271 {
272 $info = &$this->getid3->info;
273 if (isset($info['iso']['supplementary_volume_descriptor'])) {
274 $TextEncoding = 'UTF-16BE'; // Big-Endian Unicode
275 } else {
276 $TextEncoding = 'ISO-8859-1'; // Latin-1
277 }
278
279 $this->fseek($directorydata['location_bytes']);
280 $DirectoryRecordData = $this->fread(1);
281
282 while (ord($DirectoryRecordData{0}) > 33) {
283
284 $DirectoryRecordData .= $this->fread(ord($DirectoryRecordData{0}) - 1);
285
286 $ThisDirectoryRecord['raw']['length'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 0, 1));
287 $ThisDirectoryRecord['raw']['extended_attribute_length'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 1, 1));
288 $ThisDirectoryRecord['raw']['offset_logical'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 2, 4));
289 $ThisDirectoryRecord['raw']['filesize'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 10, 4));
290 $ThisDirectoryRecord['raw']['recording_date_time'] = substr($DirectoryRecordData, 18, 7);
291 $ThisDirectoryRecord['raw']['file_flags'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 25, 1));
292 $ThisDirectoryRecord['raw']['file_unit_size'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 26, 1));
293 $ThisDirectoryRecord['raw']['interleave_gap_size'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 27, 1));
294 $ThisDirectoryRecord['raw']['volume_sequence_number'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 28, 2));
295 $ThisDirectoryRecord['raw']['file_identifier_length'] = getid3_lib::LittleEndian2Int(substr($DirectoryRecordData, 32, 1));
296 $ThisDirectoryRecord['raw']['file_identifier'] = substr($DirectoryRecordData, 33, $ThisDirectoryRecord['raw']['file_identifier_length']);
297
298 $ThisDirectoryRecord['file_identifier_ascii'] = getid3_lib::iconv_fallback($TextEncoding, $info['encoding'], $ThisDirectoryRecord['raw']['file_identifier']);
299
300 $ThisDirectoryRecord['filesize'] = $ThisDirectoryRecord['raw']['filesize'];
301 $ThisDirectoryRecord['offset_bytes'] = $ThisDirectoryRecord['raw']['offset_logical'] * 2048;
302 $ThisDirectoryRecord['file_flags']['hidden'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x01);
303 $ThisDirectoryRecord['file_flags']['directory'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x02);
304 $ThisDirectoryRecord['file_flags']['associated'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x04);
305 $ThisDirectoryRecord['file_flags']['extended'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x08);
306 $ThisDirectoryRecord['file_flags']['permissions'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x10);
307 $ThisDirectoryRecord['file_flags']['multiple'] = (bool) ($ThisDirectoryRecord['raw']['file_flags'] & 0x80);
308 $ThisDirectoryRecord['recording_timestamp'] = $this->ISOtime2UNIXtime($ThisDirectoryRecord['raw']['recording_date_time']);
309
310 if ($ThisDirectoryRecord['file_flags']['directory']) {
311 $ThisDirectoryRecord['filename'] = $directorydata['full_path'];
312 } else {
313 $ThisDirectoryRecord['filename'] = $directorydata['full_path'].$this->ISOstripFilenameVersion($ThisDirectoryRecord['file_identifier_ascii']);
314 $info['iso']['files'] = getid3_lib::array_merge_clobber($info['iso']['files'], getid3_lib::CreateDeepArray($ThisDirectoryRecord['filename'], '/', $ThisDirectoryRecord['filesize']));
315 }
316
317 $DirectoryRecord[] = $ThisDirectoryRecord;
318 $DirectoryRecordData = $this->fread(1);
319 }
320
321 return $DirectoryRecord;
322 }
getid3_iso\ISOtime2UNIXtime
ISOtime2UNIXtime($ISOtime)
Definition: module.misc.iso.php:348
getid3_lib\CreateDeepArray
static CreateDeepArray($ArrayPath, $Separator, $Value)
Definition: getid3.lib.php:491
getid3_lib\LittleEndian2Int
static LittleEndian2Int($byteword, $signed=false)
Definition: getid3.lib.php:292
getid3_lib\iconv_fallback
static iconv_fallback($in_charset, $out_charset, $string)
Definition: getid3.lib.php:957
getid3_lib\array_merge_clobber
static array_merge_clobber($array1, $array2)
Definition: getid3.lib.php:384

References $info, getid3_lib\array_merge_clobber(), getid3_lib\CreateDeepArray(), getid3_handler\fread(), getid3_handler\fseek(), getid3_lib\iconv_fallback(), ISOtime2UNIXtime(), and getid3_lib\LittleEndian2Int().

Referenced by Analyze().

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◆ ParsePathTable()

getid3_iso::ParsePathTable ( )

Definition at line 212 of file module.misc.iso.php.

212 {
213 $info = &$this->getid3->info;
214 if (!isset($info['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location']) && !isset($info['iso']['primary_volume_descriptor']['raw']['path_table_l_location'])) {
215 return false;
216 }
217 if (isset($info['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location'])) {
218 $PathTableLocation = $info['iso']['supplementary_volume_descriptor']['raw']['path_table_l_location'];
219 $PathTableSize = $info['iso']['supplementary_volume_descriptor']['raw']['path_table_size'];
220 $TextEncoding = 'UTF-16BE'; // Big-Endian Unicode
221 } else {
222 $PathTableLocation = $info['iso']['primary_volume_descriptor']['raw']['path_table_l_location'];
223 $PathTableSize = $info['iso']['primary_volume_descriptor']['raw']['path_table_size'];
224 $TextEncoding = 'ISO-8859-1'; // Latin-1
225 }
226
227 if (($PathTableLocation * 2048) > $info['filesize']) {
228 $this->error('Path Table Location specifies an offset ('.($PathTableLocation * 2048).') beyond the end-of-file ('.$info['filesize'].')');
229 return false;
230 }
231
232 $info['iso']['path_table']['offset'] = $PathTableLocation * 2048;
233 $this->fseek($info['iso']['path_table']['offset']);
234 $info['iso']['path_table']['raw'] = $this->fread($PathTableSize);
235
236 $offset = 0;
237 $pathcounter = 1;
238 while ($offset < $PathTableSize) {
239 // shortcut
240 $info['iso']['path_table']['directories'][$pathcounter] = array();
241 $thisfile_iso_pathtable_directories_current = &$info['iso']['path_table']['directories'][$pathcounter];
242
243 $thisfile_iso_pathtable_directories_current['length'] = getid3_lib::LittleEndian2Int(substr($info['iso']['path_table']['raw'], $offset, 1));
244 $offset += 1;
245 $thisfile_iso_pathtable_directories_current['extended_length'] = getid3_lib::LittleEndian2Int(substr($info['iso']['path_table']['raw'], $offset, 1));
246 $offset += 1;
247 $thisfile_iso_pathtable_directories_current['location_logical'] = getid3_lib::LittleEndian2Int(substr($info['iso']['path_table']['raw'], $offset, 4));
248 $offset += 4;
249 $thisfile_iso_pathtable_directories_current['parent_directory'] = getid3_lib::LittleEndian2Int(substr($info['iso']['path_table']['raw'], $offset, 2));
250 $offset += 2;
251 $thisfile_iso_pathtable_directories_current['name'] = substr($info['iso']['path_table']['raw'], $offset, $thisfile_iso_pathtable_directories_current['length']);
252 $offset += $thisfile_iso_pathtable_directories_current['length'] + ($thisfile_iso_pathtable_directories_current['length'] % 2);
253
254 $thisfile_iso_pathtable_directories_current['name_ascii'] = getid3_lib::iconv_fallback($TextEncoding, $info['encoding'], $thisfile_iso_pathtable_directories_current['name']);
255
256 $thisfile_iso_pathtable_directories_current['location_bytes'] = $thisfile_iso_pathtable_directories_current['location_logical'] * 2048;
257 if ($pathcounter == 1) {
258 $thisfile_iso_pathtable_directories_current['full_path'] = '/';
259 } else {
260 $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'].'/';
261 }
262 $FullPathArray[] = $thisfile_iso_pathtable_directories_current['full_path'];
263
264 $pathcounter++;
265 }
266
267 return true;
268 }
getid3_handler\error
error($text)
Definition: getid3.php:1752

References $info, getid3_handler\error(), getid3_handler\fread(), getid3_handler\fseek(), getid3_lib\iconv_fallback(), and getid3_lib\LittleEndian2Int().

Referenced by Analyze().

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◆ ParsePrimaryVolumeDescriptor()

getid3_iso::ParsePrimaryVolumeDescriptor ( &  $ISOheader)

Definition at line 59 of file module.misc.iso.php.

59 {
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 $info = &$this->getid3->info;
65 $info['iso']['primary_volume_descriptor']['raw'] = array();
66 $thisfile_iso_primaryVD = &$info['iso']['primary_volume_descriptor'];
67 $thisfile_iso_primaryVD_raw = &$thisfile_iso_primaryVD['raw'];
68
69 $thisfile_iso_primaryVD_raw['volume_descriptor_type'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 0, 1));
70 $thisfile_iso_primaryVD_raw['standard_identifier'] = substr($ISOheader, 1, 5);
71 if ($thisfile_iso_primaryVD_raw['standard_identifier'] != 'CD001') {
72 $this->error('Expected "CD001" at offset ('.($thisfile_iso_primaryVD['offset'] + 1).'), found "'.$thisfile_iso_primaryVD_raw['standard_identifier'].'" instead');
73 unset($info['fileformat']);
74 unset($info['iso']);
75 return false;
76 }
77
78
79 $thisfile_iso_primaryVD_raw['volume_descriptor_version'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 6, 1));
80 //$thisfile_iso_primaryVD_raw['unused_1'] = substr($ISOheader, 7, 1);
81 $thisfile_iso_primaryVD_raw['system_identifier'] = substr($ISOheader, 8, 32);
82 $thisfile_iso_primaryVD_raw['volume_identifier'] = substr($ISOheader, 40, 32);
83 //$thisfile_iso_primaryVD_raw['unused_2'] = substr($ISOheader, 72, 8);
84 $thisfile_iso_primaryVD_raw['volume_space_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 80, 4));
85 //$thisfile_iso_primaryVD_raw['unused_3'] = substr($ISOheader, 88, 32);
86 $thisfile_iso_primaryVD_raw['volume_set_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 120, 2));
87 $thisfile_iso_primaryVD_raw['volume_sequence_number'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 124, 2));
88 $thisfile_iso_primaryVD_raw['logical_block_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 128, 2));
89 $thisfile_iso_primaryVD_raw['path_table_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 132, 4));
90 $thisfile_iso_primaryVD_raw['path_table_l_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 140, 2));
91 $thisfile_iso_primaryVD_raw['path_table_l_opt_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 144, 2));
92 $thisfile_iso_primaryVD_raw['path_table_m_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 148, 2));
93 $thisfile_iso_primaryVD_raw['path_table_m_opt_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 152, 2));
94 $thisfile_iso_primaryVD_raw['root_directory_record'] = substr($ISOheader, 156, 34);
95 $thisfile_iso_primaryVD_raw['volume_set_identifier'] = substr($ISOheader, 190, 128);
96 $thisfile_iso_primaryVD_raw['publisher_identifier'] = substr($ISOheader, 318, 128);
97 $thisfile_iso_primaryVD_raw['data_preparer_identifier'] = substr($ISOheader, 446, 128);
98 $thisfile_iso_primaryVD_raw['application_identifier'] = substr($ISOheader, 574, 128);
99 $thisfile_iso_primaryVD_raw['copyright_file_identifier'] = substr($ISOheader, 702, 37);
100 $thisfile_iso_primaryVD_raw['abstract_file_identifier'] = substr($ISOheader, 739, 37);
101 $thisfile_iso_primaryVD_raw['bibliographic_file_identifier'] = substr($ISOheader, 776, 37);
102 $thisfile_iso_primaryVD_raw['volume_creation_date_time'] = substr($ISOheader, 813, 17);
103 $thisfile_iso_primaryVD_raw['volume_modification_date_time'] = substr($ISOheader, 830, 17);
104 $thisfile_iso_primaryVD_raw['volume_expiration_date_time'] = substr($ISOheader, 847, 17);
105 $thisfile_iso_primaryVD_raw['volume_effective_date_time'] = substr($ISOheader, 864, 17);
106 $thisfile_iso_primaryVD_raw['file_structure_version'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 881, 1));
107 //$thisfile_iso_primaryVD_raw['unused_4'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 882, 1));
108 $thisfile_iso_primaryVD_raw['application_data'] = substr($ISOheader, 883, 512);
109 //$thisfile_iso_primaryVD_raw['unused_5'] = substr($ISOheader, 1395, 653);
110
111 $thisfile_iso_primaryVD['system_identifier'] = trim($thisfile_iso_primaryVD_raw['system_identifier']);
112 $thisfile_iso_primaryVD['volume_identifier'] = trim($thisfile_iso_primaryVD_raw['volume_identifier']);
113 $thisfile_iso_primaryVD['volume_set_identifier'] = trim($thisfile_iso_primaryVD_raw['volume_set_identifier']);
114 $thisfile_iso_primaryVD['publisher_identifier'] = trim($thisfile_iso_primaryVD_raw['publisher_identifier']);
115 $thisfile_iso_primaryVD['data_preparer_identifier'] = trim($thisfile_iso_primaryVD_raw['data_preparer_identifier']);
116 $thisfile_iso_primaryVD['application_identifier'] = trim($thisfile_iso_primaryVD_raw['application_identifier']);
117 $thisfile_iso_primaryVD['copyright_file_identifier'] = trim($thisfile_iso_primaryVD_raw['copyright_file_identifier']);
118 $thisfile_iso_primaryVD['abstract_file_identifier'] = trim($thisfile_iso_primaryVD_raw['abstract_file_identifier']);
119 $thisfile_iso_primaryVD['bibliographic_file_identifier'] = trim($thisfile_iso_primaryVD_raw['bibliographic_file_identifier']);
120 $thisfile_iso_primaryVD['volume_creation_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_creation_date_time']);
121 $thisfile_iso_primaryVD['volume_modification_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_modification_date_time']);
122 $thisfile_iso_primaryVD['volume_expiration_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_expiration_date_time']);
123 $thisfile_iso_primaryVD['volume_effective_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_primaryVD_raw['volume_effective_date_time']);
124
125 if (($thisfile_iso_primaryVD_raw['volume_space_size'] * 2048) > $info['filesize']) {
126 $this->error('Volume Space Size ('.($thisfile_iso_primaryVD_raw['volume_space_size'] * 2048).' bytes) is larger than the file size ('.$info['filesize'].' bytes) (truncated file?)');
127 }
128
129 return true;
130 }
getid3_iso\ISOtimeText2UNIXtime
ISOtimeText2UNIXtime($ISOtime)
Definition: module.misc.iso.php:333

References $info, getid3_handler\error(), ISOtimeText2UNIXtime(), and getid3_lib\LittleEndian2Int().

Referenced by Analyze().

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◆ ParseSupplementaryVolumeDescriptor()

getid3_iso::ParseSupplementaryVolumeDescriptor ( &  $ISOheader)

Definition at line 133 of file module.misc.iso.php.

133 {
134 // ISO integer values are stored Both-Endian format!!
135 // ie 12345 == 0x3039 is stored as $39 $30 $30 $39 in a 4-byte field
136
137 // shortcuts
138 $info = &$this->getid3->info;
139 $info['iso']['supplementary_volume_descriptor']['raw'] = array();
140 $thisfile_iso_supplementaryVD = &$info['iso']['supplementary_volume_descriptor'];
141 $thisfile_iso_supplementaryVD_raw = &$thisfile_iso_supplementaryVD['raw'];
142
143 $thisfile_iso_supplementaryVD_raw['volume_descriptor_type'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 0, 1));
144 $thisfile_iso_supplementaryVD_raw['standard_identifier'] = substr($ISOheader, 1, 5);
145 if ($thisfile_iso_supplementaryVD_raw['standard_identifier'] != 'CD001') {
146 $this->error('Expected "CD001" at offset ('.($thisfile_iso_supplementaryVD['offset'] + 1).'), found "'.$thisfile_iso_supplementaryVD_raw['standard_identifier'].'" instead');
147 unset($info['fileformat']);
148 unset($info['iso']);
149 return false;
150 }
151
152 $thisfile_iso_supplementaryVD_raw['volume_descriptor_version'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 6, 1));
153 //$thisfile_iso_supplementaryVD_raw['unused_1'] = substr($ISOheader, 7, 1);
154 $thisfile_iso_supplementaryVD_raw['system_identifier'] = substr($ISOheader, 8, 32);
155 $thisfile_iso_supplementaryVD_raw['volume_identifier'] = substr($ISOheader, 40, 32);
156 //$thisfile_iso_supplementaryVD_raw['unused_2'] = substr($ISOheader, 72, 8);
157 $thisfile_iso_supplementaryVD_raw['volume_space_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 80, 4));
158 if ($thisfile_iso_supplementaryVD_raw['volume_space_size'] == 0) {
159 // Supplementary Volume Descriptor not used
160 //unset($thisfile_iso_supplementaryVD);
161 //return false;
162 }
163
164 //$thisfile_iso_supplementaryVD_raw['unused_3'] = substr($ISOheader, 88, 32);
165 $thisfile_iso_supplementaryVD_raw['volume_set_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 120, 2));
166 $thisfile_iso_supplementaryVD_raw['volume_sequence_number'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 124, 2));
167 $thisfile_iso_supplementaryVD_raw['logical_block_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 128, 2));
168 $thisfile_iso_supplementaryVD_raw['path_table_size'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 132, 4));
169 $thisfile_iso_supplementaryVD_raw['path_table_l_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 140, 2));
170 $thisfile_iso_supplementaryVD_raw['path_table_l_opt_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 144, 2));
171 $thisfile_iso_supplementaryVD_raw['path_table_m_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 148, 2));
172 $thisfile_iso_supplementaryVD_raw['path_table_m_opt_location'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 152, 2));
173 $thisfile_iso_supplementaryVD_raw['root_directory_record'] = substr($ISOheader, 156, 34);
174 $thisfile_iso_supplementaryVD_raw['volume_set_identifier'] = substr($ISOheader, 190, 128);
175 $thisfile_iso_supplementaryVD_raw['publisher_identifier'] = substr($ISOheader, 318, 128);
176 $thisfile_iso_supplementaryVD_raw['data_preparer_identifier'] = substr($ISOheader, 446, 128);
177 $thisfile_iso_supplementaryVD_raw['application_identifier'] = substr($ISOheader, 574, 128);
178 $thisfile_iso_supplementaryVD_raw['copyright_file_identifier'] = substr($ISOheader, 702, 37);
179 $thisfile_iso_supplementaryVD_raw['abstract_file_identifier'] = substr($ISOheader, 739, 37);
180 $thisfile_iso_supplementaryVD_raw['bibliographic_file_identifier'] = substr($ISOheader, 776, 37);
181 $thisfile_iso_supplementaryVD_raw['volume_creation_date_time'] = substr($ISOheader, 813, 17);
182 $thisfile_iso_supplementaryVD_raw['volume_modification_date_time'] = substr($ISOheader, 830, 17);
183 $thisfile_iso_supplementaryVD_raw['volume_expiration_date_time'] = substr($ISOheader, 847, 17);
184 $thisfile_iso_supplementaryVD_raw['volume_effective_date_time'] = substr($ISOheader, 864, 17);
185 $thisfile_iso_supplementaryVD_raw['file_structure_version'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 881, 1));
186 //$thisfile_iso_supplementaryVD_raw['unused_4'] = getid3_lib::LittleEndian2Int(substr($ISOheader, 882, 1));
187 $thisfile_iso_supplementaryVD_raw['application_data'] = substr($ISOheader, 883, 512);
188 //$thisfile_iso_supplementaryVD_raw['unused_5'] = substr($ISOheader, 1395, 653);
189
190 $thisfile_iso_supplementaryVD['system_identifier'] = trim($thisfile_iso_supplementaryVD_raw['system_identifier']);
191 $thisfile_iso_supplementaryVD['volume_identifier'] = trim($thisfile_iso_supplementaryVD_raw['volume_identifier']);
192 $thisfile_iso_supplementaryVD['volume_set_identifier'] = trim($thisfile_iso_supplementaryVD_raw['volume_set_identifier']);
193 $thisfile_iso_supplementaryVD['publisher_identifier'] = trim($thisfile_iso_supplementaryVD_raw['publisher_identifier']);
194 $thisfile_iso_supplementaryVD['data_preparer_identifier'] = trim($thisfile_iso_supplementaryVD_raw['data_preparer_identifier']);
195 $thisfile_iso_supplementaryVD['application_identifier'] = trim($thisfile_iso_supplementaryVD_raw['application_identifier']);
196 $thisfile_iso_supplementaryVD['copyright_file_identifier'] = trim($thisfile_iso_supplementaryVD_raw['copyright_file_identifier']);
197 $thisfile_iso_supplementaryVD['abstract_file_identifier'] = trim($thisfile_iso_supplementaryVD_raw['abstract_file_identifier']);
198 $thisfile_iso_supplementaryVD['bibliographic_file_identifier'] = trim($thisfile_iso_supplementaryVD_raw['bibliographic_file_identifier']);
199 $thisfile_iso_supplementaryVD['volume_creation_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_creation_date_time']);
200 $thisfile_iso_supplementaryVD['volume_modification_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_modification_date_time']);
201 $thisfile_iso_supplementaryVD['volume_expiration_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_expiration_date_time']);
202 $thisfile_iso_supplementaryVD['volume_effective_date_time'] = $this->ISOtimeText2UNIXtime($thisfile_iso_supplementaryVD_raw['volume_effective_date_time']);
203
204 if (($thisfile_iso_supplementaryVD_raw['volume_space_size'] * $thisfile_iso_supplementaryVD_raw['logical_block_size']) > $info['filesize']) {
205 $this->error('Volume Space Size ('.($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?)');
206 }
207
208 return true;
209 }

References $info, getid3_handler\error(), ISOtimeText2UNIXtime(), and getid3_lib\LittleEndian2Int().

Referenced by Analyze().

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◆ TwosCompliment2Decimal()

getid3_iso::TwosCompliment2Decimal (   $BinaryValue)

Definition at line 369 of file module.misc.iso.php.

369 {
370 // http://sandbox.mc.edu/~bennet/cs110/tc/tctod.html
371 // First check if the number is negative or positive by looking at the sign bit.
372 // If it is positive, simply convert it to decimal.
373 // If it is negative, make it positive by inverting the bits and adding one.
374 // Then, convert the result to decimal.
375 // The negative of this number is the value of the original binary.
376
377 if ($BinaryValue & 0x80) {
378
379 // negative number
380 return (0 - ((~$BinaryValue & 0xFF) + 1));
381 } else {
382 // positive number
383 return $BinaryValue;
384 }
385 }

Referenced by ISOtime2UNIXtime().

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The documentation for this class was generated from the following file: