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