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<?php
/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich <info@getid3.org> //
// available at https://github.com/JamesHeinrich/getID3 //
// or https://www.getid3.org //
// or http://getid3.sourceforge.net //
// see readme.txt for more details //
/////////////////////////////////////////////////////////////////
/// //
// module.tag.lyrics3.php //
// module for analyzing Lyrics3 tags //
// dependencies: module.tag.apetag.php (optional) //
// ///
/////////////////////////////////////////////////////////////////
if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers
exit;
}
class getid3_lyrics3 extends getid3_handler
{
/**
* @return bool
*/
public function Analyze() {
$info = &$this->getid3->info;
// http://www.volweb.cz/str/tags.htm
if (!getid3_lib::intValueSupported($info['filesize'])) {
$this->warning('Unable to check for Lyrics3 because file is larger than '.round(PHP_INT_MAX / 1073741824).'GB');
return false;
}
$this->fseek((0 - 128 - 9 - 6), SEEK_END); // end - ID3v1 - "LYRICSEND" - [Lyrics3size]
$lyrics3offset = null;
$lyrics3version = null;
$lyrics3size = null;
$lyrics3_id3v1 = $this->fread(128 + 9 + 6);
$lyrics3lsz = (int) substr($lyrics3_id3v1, 0, 6); // Lyrics3size
$lyrics3end = substr($lyrics3_id3v1, 6, 9); // LYRICSEND or LYRICS200
$id3v1tag = substr($lyrics3_id3v1, 15, 128); // ID3v1
if ($lyrics3end == 'LYRICSEND') {
// Lyrics3v1, ID3v1, no APE
$lyrics3size = 5100;
$lyrics3offset = $info['filesize'] - 128 - $lyrics3size;
$lyrics3version = 1;
} elseif ($lyrics3end == 'LYRICS200') {
// Lyrics3v2, ID3v1, no APE
// LSZ = lyrics + 'LYRICSBEGIN'; add 6-byte size field; add 'LYRICS200'
$lyrics3size = $lyrics3lsz + 6 + strlen('LYRICS200');
$lyrics3offset = $info['filesize'] - 128 - $lyrics3size;
$lyrics3version = 2;
} elseif (substr(strrev($lyrics3_id3v1), 0, 9) == strrev('LYRICSEND')) {
// Lyrics3v1, no ID3v1, no APE
$lyrics3size = 5100;
$lyrics3offset = $info['filesize'] - $lyrics3size;
$lyrics3version = 1;
$lyrics3offset = $info['filesize'] - $lyrics3size;
} elseif (substr(strrev($lyrics3_id3v1), 0, 9) == strrev('LYRICS200')) {
// Lyrics3v2, no ID3v1, no APE
$lyrics3size = (int) strrev(substr(strrev($lyrics3_id3v1), 9, 6)) + 6 + strlen('LYRICS200'); // LSZ = lyrics + 'LYRICSBEGIN'; add 6-byte size field; add 'LYRICS200'
$lyrics3offset = $info['filesize'] - $lyrics3size;
$lyrics3version = 2;
} else {
if (isset($info['ape']['tag_offset_start']) && ($info['ape']['tag_offset_start'] > 15)) {
$this->fseek($info['ape']['tag_offset_start'] - 15);
$lyrics3lsz = $this->fread(6);
$lyrics3end = $this->fread(9);
if ($lyrics3end == 'LYRICSEND') {
// Lyrics3v1, APE, maybe ID3v1
$lyrics3size = 5100;
$lyrics3offset = $info['ape']['tag_offset_start'] - $lyrics3size;
$info['avdataend'] = $lyrics3offset;
$lyrics3version = 1;
$this->warning('APE tag located after Lyrics3, will probably break Lyrics3 compatability');
} elseif ($lyrics3end == 'LYRICS200') {
// Lyrics3v2, APE, maybe ID3v1
$lyrics3size = $lyrics3lsz + 6 + strlen('LYRICS200'); // LSZ = lyrics + 'LYRICSBEGIN'; add 6-byte size field; add 'LYRICS200'
$lyrics3offset = $info['ape']['tag_offset_start'] - $lyrics3size;
$lyrics3version = 2;
$this->warning('APE tag located after Lyrics3, will probably break Lyrics3 compatability');
}
}
}
if (isset($lyrics3offset) && isset($lyrics3version) && isset($lyrics3size)) {
$info['avdataend'] = $lyrics3offset;
$this->getLyrics3Data($lyrics3offset, $lyrics3version, $lyrics3size);
if (!isset($info['ape'])) {
if (isset($info['lyrics3']['tag_offset_start'])) {
$GETID3_ERRORARRAY = &$info['warning'];
if ($this->getid3->option_tag_apetag) {
getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.tag.apetag.php', __FILE__, true);
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename, $this->getid3->info['filesize'], $this->getid3->fp);
$getid3_apetag = new getid3_apetag($getid3_temp);
$getid3_apetag->overrideendoffset = $info['lyrics3']['tag_offset_start'];
$getid3_apetag->Analyze();
if (!empty($getid3_temp->info['ape'])) {
$info['ape'] = $getid3_temp->info['ape'];
}
if (!empty($getid3_temp->info['replay_gain'])) {
$info['replay_gain'] = $getid3_temp->info['replay_gain'];
}
unset($getid3_temp, $getid3_apetag);
} else {
$this->warning('Unable to check for Lyrics3 and APE tags interaction since option_tag_apetag=FALSE');
}
} else {
$this->warning('Lyrics3 and APE tags appear to have become entangled (most likely due to updating the APE tags with a non-Lyrics3-aware tagger)');
}
}
}
return true;
}
/**
* @param int $endoffset
* @param int $version
* @param int $length
*
* @return bool
*/
public function getLyrics3Data($endoffset, $version, $length) {
// http://www.volweb.cz/str/tags.htm
$info = &$this->getid3->info;
if (!getid3_lib::intValueSupported($endoffset)) {
$this->warning('Unable to check for Lyrics3 because file is larger than '.round(PHP_INT_MAX / 1073741824).'GB');
return false;
}
$this->fseek($endoffset);
if ($length <= 0) {
return false;
}
$rawdata = $this->fread($length);
$ParsedLyrics3 = array();
$ParsedLyrics3['raw']['lyrics3version'] = $version;
$ParsedLyrics3['raw']['lyrics3tagsize'] = $length;
$ParsedLyrics3['tag_offset_start'] = $endoffset;
$ParsedLyrics3['tag_offset_end'] = $endoffset + $length - 1;
if (substr($rawdata, 0, 11) != 'LYRICSBEGIN') {
if (strpos($rawdata, 'LYRICSBEGIN') !== false) {
$this->warning('"LYRICSBEGIN" expected at '.$endoffset.' but actually found at '.($endoffset + strpos($rawdata, 'LYRICSBEGIN')).' - this is invalid for Lyrics3 v'.$version);
$info['avdataend'] = $endoffset + strpos($rawdata, 'LYRICSBEGIN');
$rawdata = substr($rawdata, strpos($rawdata, 'LYRICSBEGIN'));
$length = strlen($rawdata);
$ParsedLyrics3['tag_offset_start'] = $info['avdataend'];
$ParsedLyrics3['raw']['lyrics3tagsize'] = $length;
} else {
$this->error('"LYRICSBEGIN" expected at '.$endoffset.' but found "'.substr($rawdata, 0, 11).'" instead');
return false;
}
}
switch ($version) {
case 1:
if (substr($rawdata, strlen($rawdata) - 9, 9) == 'LYRICSEND') {
$ParsedLyrics3['raw']['LYR'] = trim(substr($rawdata, 11, strlen($rawdata) - 11 - 9));
$this->Lyrics3LyricsTimestampParse($ParsedLyrics3);
} else {
$this->error('"LYRICSEND" expected at '.($this->ftell() - 11 + $length - 9).' but found "'.substr($rawdata, strlen($rawdata) - 9, 9).'" instead');
return false;
}
break;
case 2:
if (substr($rawdata, strlen($rawdata) - 9, 9) == 'LYRICS200') {
$ParsedLyrics3['raw']['unparsed'] = substr($rawdata, 11, strlen($rawdata) - 11 - 9 - 6); // LYRICSBEGIN + LYRICS200 + LSZ
$rawdata = $ParsedLyrics3['raw']['unparsed'];
while (strlen($rawdata) > 0) {
$fieldname = substr($rawdata, 0, 3);
$fieldsize = (int) substr($rawdata, 3, 5);
$ParsedLyrics3['raw'][$fieldname] = substr($rawdata, 8, $fieldsize);
$rawdata = substr($rawdata, 3 + 5 + $fieldsize);
}
if (isset($ParsedLyrics3['raw']['IND'])) {
$i = 0;
$flagnames = array('lyrics', 'timestamps', 'inhibitrandom');
foreach ($flagnames as $flagname) {
if (strlen($ParsedLyrics3['raw']['IND']) > $i++) {
$ParsedLyrics3['flags'][$flagname] = $this->IntString2Bool(substr($ParsedLyrics3['raw']['IND'], $i, 1 - 1));
}
}
}
$fieldnametranslation = array('ETT'=>'title', 'EAR'=>'artist', 'EAL'=>'album', 'INF'=>'comment', 'AUT'=>'author');
foreach ($fieldnametranslation as $key => $value) {
if (isset($ParsedLyrics3['raw'][$key])) {
$ParsedLyrics3['comments'][$value][] = trim($ParsedLyrics3['raw'][$key]);
}
}
if (isset($ParsedLyrics3['raw']['IMG'])) {
$imagestrings = explode("\r\n", $ParsedLyrics3['raw']['IMG']);
foreach ($imagestrings as $key => $imagestring) {
if (strpos($imagestring, '||') !== false) {
$imagearray = explode('||', $imagestring);
$ParsedLyrics3['images'][$key]['filename'] = $imagearray[0];
$ParsedLyrics3['images'][$key]['description'] = (isset($imagearray[1]) ? $imagearray[1] : '');
$ParsedLyrics3['images'][$key]['timestamp'] = $this->Lyrics3Timestamp2Seconds(isset($imagearray[2]) ? $imagearray[2] : '');
}
}
}
if (isset($ParsedLyrics3['raw']['LYR'])) {
$this->Lyrics3LyricsTimestampParse($ParsedLyrics3);
}
} else {
$this->error('"LYRICS200" expected at '.($this->ftell() - 11 + $length - 9).' but found "'.substr($rawdata, strlen($rawdata) - 9, 9).'" instead');
return false;
}
break;
default:
$this->error('Cannot process Lyrics3 version '.$version.' (only v1 and v2)');
return false;
}
if (isset($info['id3v1']['tag_offset_start']) && ($info['id3v1']['tag_offset_start'] <= $ParsedLyrics3['tag_offset_end'])) {
$this->warning('ID3v1 tag information ignored since it appears to be a false synch in Lyrics3 tag data');
unset($info['id3v1']);
foreach ($info['warning'] as $key => $value) {
if ($value == 'Some ID3v1 fields do not use NULL characters for padding') {
unset($info['warning'][$key]);
sort($info['warning']);
break;
}
}
}
$info['lyrics3'] = $ParsedLyrics3;
return true;
}
/**
* @param string $rawtimestamp
*
* @return int|false
*/
public function Lyrics3Timestamp2Seconds($rawtimestamp) {
if (preg_match('#^\\[([0-9]{2}):([0-9]{2})\\]$#', $rawtimestamp, $regs)) {
return (int) (((int) $regs[1] * 60) + (int) $regs[2]);
}
return false;
}
/**
* @param array $Lyrics3data
*
* @return bool
*/
public function Lyrics3LyricsTimestampParse(&$Lyrics3data) {
$lyricsarray = explode("\r\n", $Lyrics3data['raw']['LYR']);
$notimestamplyricsarray = array();
foreach ($lyricsarray as $key => $lyricline) {
$regs = array();
$thislinetimestamps = array();
while (preg_match('#^(\\[[0-9]{2}:[0-9]{2}\\])#', $lyricline, $regs)) {
$thislinetimestamps[] = $this->Lyrics3Timestamp2Seconds($regs[0]);
$lyricline = str_replace($regs[0], '', $lyricline);
}
$notimestamplyricsarray[$key] = $lyricline;
if (count($thislinetimestamps) > 0) {
sort($thislinetimestamps);
foreach ($thislinetimestamps as $timestampkey => $timestamp) {
if (isset($Lyrics3data['comments']['synchedlyrics'][$timestamp])) {
// timestamps only have a 1-second resolution, it's possible that multiple lines
// could have the same timestamp, if so, append
$Lyrics3data['comments']['synchedlyrics'][$timestamp] .= "\r\n".$lyricline;
} else {
$Lyrics3data['comments']['synchedlyrics'][$timestamp] = $lyricline;
}
}
}
}
$Lyrics3data['comments']['unsynchedlyrics'][0] = implode("\r\n", $notimestamplyricsarray);
if (isset($Lyrics3data['comments']['synchedlyrics']) && is_array($Lyrics3data['comments']['synchedlyrics'])) {
ksort($Lyrics3data['comments']['synchedlyrics']);
}
return true;
}
/**
* @param string $char
*
* @return bool|null
*/
public function IntString2Bool($char) {
if ($char == '1') {
return true;
} elseif ($char == '0') {
return false;
}
return null;
}
}