name : module.tag.apetag.php <?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.apetag.php // // module for analyzing APE tags // // dependencies: NONE // // /// ///////////////////////////////////////////////////////////////// if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers exit; } class getid3_apetag extends getid3_handler { /** * true: return full data for all attachments; * false: return no data for all attachments; * integer: return data for attachments <= than this; * string: save as file to this directory. * * @var int|bool|string */ public $inline_attachments = true; public $overrideendoffset = 0; /** * @return bool */ public function Analyze() { $info = &$this->getid3->info; if (!getid3_lib::intValueSupported($info['filesize'])) { $this->warning('Unable to check for APEtags because file is larger than '.round(PHP_INT_MAX / 1073741824).'GB'); return false; } $id3v1tagsize = 128; $apetagheadersize = 32; $lyrics3tagsize = 10; if ($this->overrideendoffset == 0) { $this->fseek(0 - $id3v1tagsize - $apetagheadersize - $lyrics3tagsize, SEEK_END); $APEfooterID3v1 = $this->fread($id3v1tagsize + $apetagheadersize + $lyrics3tagsize); //if (preg_match('/APETAGEX.{24}TAG.{125}$/i', $APEfooterID3v1)) { if (substr($APEfooterID3v1, strlen($APEfooterID3v1) - $id3v1tagsize - $apetagheadersize, 8) == 'APETAGEX') { // APE tag found before ID3v1 $info['ape']['tag_offset_end'] = $info['filesize'] - $id3v1tagsize; //} elseif (preg_match('/APETAGEX.{24}$/i', $APEfooterID3v1)) { } elseif (substr($APEfooterID3v1, strlen($APEfooterID3v1) - $apetagheadersize, 8) == 'APETAGEX') { // APE tag found, no ID3v1 $info['ape']['tag_offset_end'] = $info['filesize']; } } else { $this->fseek($this->overrideendoffset - $apetagheadersize); if ($this->fread(8) == 'APETAGEX') { $info['ape']['tag_offset_end'] = $this->overrideendoffset; } } if (!isset($info['ape']['tag_offset_end'])) { // APE tag not found unset($info['ape']); return false; } // shortcut $thisfile_ape = &$info['ape']; $this->fseek($thisfile_ape['tag_offset_end'] - $apetagheadersize); $APEfooterData = $this->fread(32); if (!($thisfile_ape['footer'] = $this->parseAPEheaderFooter($APEfooterData))) { $this->error('Error parsing APE footer at offset '.$thisfile_ape['tag_offset_end']); return false; } if (isset($thisfile_ape['footer']['flags']['header']) && $thisfile_ape['footer']['flags']['header']) { $this->fseek($thisfile_ape['tag_offset_end'] - $thisfile_ape['footer']['raw']['tagsize'] - $apetagheadersize); $thisfile_ape['tag_offset_start'] = $this->ftell(); $APEtagData = $this->fread($thisfile_ape['footer']['raw']['tagsize'] + $apetagheadersize); } else { $thisfile_ape['tag_offset_start'] = $thisfile_ape['tag_offset_end'] - $thisfile_ape['footer']['raw']['tagsize']; $this->fseek($thisfile_ape['tag_offset_start']); $APEtagData = $this->fread($thisfile_ape['footer']['raw']['tagsize']); } $info['avdataend'] = $thisfile_ape['tag_offset_start']; if (isset($info['id3v1']['tag_offset_start']) && ($info['id3v1']['tag_offset_start'] < $thisfile_ape['tag_offset_end'])) { $this->warning('ID3v1 tag information ignored since it appears to be a false synch in APEtag data'); unset($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; } } } $offset = 0; if (isset($thisfile_ape['footer']['flags']['header']) && $thisfile_ape['footer']['flags']['header']) { if ($thisfile_ape['header'] = $this->parseAPEheaderFooter(substr($APEtagData, 0, $apetagheadersize))) { $offset += $apetagheadersize; } else { $this->error('Error parsing APE header at offset '.$thisfile_ape['tag_offset_start']); return false; } } // shortcut $info['replay_gain'] = array(); $thisfile_replaygain = &$info['replay_gain']; for ($i = 0; $i < $thisfile_ape['footer']['raw']['tag_items']; $i++) { $value_size = getid3_lib::LittleEndian2Int(substr($APEtagData, $offset, 4)); $offset += 4; $item_flags = getid3_lib::LittleEndian2Int(substr($APEtagData, $offset, 4)); $offset += 4; if (strstr(substr($APEtagData, $offset), "\x00") === false) { $this->error('Cannot find null-byte (0x00) separator between ItemKey #'.$i.' and value. ItemKey starts '.$offset.' bytes into the APE tag, at file offset '.($thisfile_ape['tag_offset_start'] + $offset)); return false; } $ItemKeyLength = strpos($APEtagData, "\x00", $offset) - $offset; $item_key = strtolower(substr($APEtagData, $offset, $ItemKeyLength)); // shortcut $thisfile_ape['items'][$item_key] = array(); $thisfile_ape_items_current = &$thisfile_ape['items'][$item_key]; $thisfile_ape_items_current['offset'] = $thisfile_ape['tag_offset_start'] + $offset; $offset += ($ItemKeyLength + 1); // skip 0x00 terminator $thisfile_ape_items_current['data'] = substr($APEtagData, $offset, $value_size); $offset += $value_size; $thisfile_ape_items_current['flags'] = $this->parseAPEtagFlags($item_flags); switch ($thisfile_ape_items_current['flags']['item_contents_raw']) { case 0: // UTF-8 case 2: // Locator (URL, filename, etc), UTF-8 encoded $thisfile_ape_items_current['data'] = explode("\x00", $thisfile_ape_items_current['data']); break; case 1: // binary data default: break; } switch (strtolower($item_key)) { // http://wiki.hydrogenaud.io/index.php?title=ReplayGain#MP3Gain case 'replaygain_track_gain': if (preg_match('#^([\\-\\+][0-9\\.,]{8})( dB)?$#', $thisfile_ape_items_current['data'][0], $matches)) { $thisfile_replaygain['track']['adjustment'] = (float) str_replace(',', '.', $matches[1]); // float casting will see "0,95" as zero! $thisfile_replaygain['track']['originator'] = 'unspecified'; } else { $this->warning('MP3gainTrackGain value in APEtag appears invalid: "'.$thisfile_ape_items_current['data'][0].'"'); } break; case 'replaygain_track_peak': if (preg_match('#^([0-9\\.,]{8})$#', $thisfile_ape_items_current['data'][0], $matches)) { $thisfile_replaygain['track']['peak'] = (float) str_replace(',', '.', $matches[1]); // float casting will see "0,95" as zero! $thisfile_replaygain['track']['originator'] = 'unspecified'; if ($thisfile_replaygain['track']['peak'] <= 0) { $this->warning('ReplayGain Track peak from APEtag appears invalid: '.$thisfile_replaygain['track']['peak'].' (original value = "'.$thisfile_ape_items_current['data'][0].'")'); } } else { $this->warning('MP3gainTrackPeak value in APEtag appears invalid: "'.$thisfile_ape_items_current['data'][0].'"'); } break; case 'replaygain_album_gain': if (preg_match('#^([\\-\\+][0-9\\.,]{8})( dB)?$#', $thisfile_ape_items_current['data'][0], $matches)) { $thisfile_replaygain['album']['adjustment'] = (float) str_replace(',', '.', $matches[1]); // float casting will see "0,95" as zero! $thisfile_replaygain['album']['originator'] = 'unspecified'; } else { $this->warning('MP3gainAlbumGain value in APEtag appears invalid: "'.$thisfile_ape_items_current['data'][0].'"'); } break; case 'replaygain_album_peak': if (preg_match('#^([0-9\\.,]{8})$#', $thisfile_ape_items_current['data'][0], $matches)) { $thisfile_replaygain['album']['peak'] = (float) str_replace(',', '.', $matches[1]); // float casting will see "0,95" as zero! $thisfile_replaygain['album']['originator'] = 'unspecified'; if ($thisfile_replaygain['album']['peak'] <= 0) { $this->warning('ReplayGain Album peak from APEtag appears invalid: '.$thisfile_replaygain['album']['peak'].' (original value = "'.$thisfile_ape_items_current['data'][0].'")'); } } else { $this->warning('MP3gainAlbumPeak value in APEtag appears invalid: "'.$thisfile_ape_items_current['data'][0].'"'); } break; case 'mp3gain_undo': if (preg_match('#^[\\-\\+][0-9]{3},[\\-\\+][0-9]{3},[NW]$#', $thisfile_ape_items_current['data'][0])) { list($mp3gain_undo_left, $mp3gain_undo_right, $mp3gain_undo_wrap) = explode(',', $thisfile_ape_items_current['data'][0]); $thisfile_replaygain['mp3gain']['undo_left'] = intval($mp3gain_undo_left); $thisfile_replaygain['mp3gain']['undo_right'] = intval($mp3gain_undo_right); $thisfile_replaygain['mp3gain']['undo_wrap'] = (($mp3gain_undo_wrap == 'Y') ? true : false); } else { $this->warning('MP3gainUndo value in APEtag appears invalid: "'.$thisfile_ape_items_current['data'][0].'"'); } break; case 'mp3gain_minmax': if (preg_match('#^[0-9]{3},[0-9]{3}$#', $thisfile_ape_items_current['data'][0])) { list($mp3gain_globalgain_min, $mp3gain_globalgain_max) = explode(',', $thisfile_ape_items_current['data'][0]); $thisfile_replaygain['mp3gain']['globalgain_track_min'] = intval($mp3gain_globalgain_min); $thisfile_replaygain['mp3gain']['globalgain_track_max'] = intval($mp3gain_globalgain_max); } else { $this->warning('MP3gainMinMax value in APEtag appears invalid: "'.$thisfile_ape_items_current['data'][0].'"'); } break; case 'mp3gain_album_minmax': if (preg_match('#^[0-9]{3},[0-9]{3}$#', $thisfile_ape_items_current['data'][0])) { list($mp3gain_globalgain_album_min, $mp3gain_globalgain_album_max) = explode(',', $thisfile_ape_items_current['data'][0]); $thisfile_replaygain['mp3gain']['globalgain_album_min'] = intval($mp3gain_globalgain_album_min); $thisfile_replaygain['mp3gain']['globalgain_album_max'] = intval($mp3gain_globalgain_album_max); } else { $this->warning('MP3gainAlbumMinMax value in APEtag appears invalid: "'.$thisfile_ape_items_current['data'][0].'"'); } break; case 'tracknumber': if (is_array($thisfile_ape_items_current['data'])) { foreach ($thisfile_ape_items_current['data'] as $comment) { $thisfile_ape['comments']['track_number'][] = $comment; } } break; case 'cover art (artist)': case 'cover art (back)': case 'cover art (band logo)': case 'cover art (band)': case 'cover art (colored fish)': case 'cover art (composer)': case 'cover art (conductor)': case 'cover art (front)': case 'cover art (icon)': case 'cover art (illustration)': case 'cover art (lead)': case 'cover art (leaflet)': case 'cover art (lyricist)': case 'cover art (media)': case 'cover art (movie scene)': case 'cover art (other icon)': case 'cover art (other)': case 'cover art (performance)': case 'cover art (publisher logo)': case 'cover art (recording)': case 'cover art (studio)': // list of possible cover arts from https://github.com/mono/taglib-sharp/blob/taglib-sharp-2.0.3.2/src/TagLib/Ape/Tag.cs if (is_array($thisfile_ape_items_current['data'])) { $this->warning('APEtag "'.$item_key.'" should be flagged as Binary data, but was incorrectly flagged as UTF-8'); $thisfile_ape_items_current['data'] = implode("\x00", $thisfile_ape_items_current['data']); } list($thisfile_ape_items_current['filename'], $thisfile_ape_items_current['data']) = explode("\x00", $thisfile_ape_items_current['data'], 2); $thisfile_ape_items_current['data_offset'] = $thisfile_ape_items_current['offset'] + strlen($thisfile_ape_items_current['filename']."\x00"); $thisfile_ape_items_current['data_length'] = strlen($thisfile_ape_items_current['data']); do { $thisfile_ape_items_current['image_mime'] = ''; $imageinfo = array(); $imagechunkcheck = getid3_lib::GetDataImageSize($thisfile_ape_items_current['data'], $imageinfo); if (($imagechunkcheck === false) || !isset($imagechunkcheck[2])) { $this->warning('APEtag "'.$item_key.'" contains invalid image data'); break; } $thisfile_ape_items_current['image_mime'] = image_type_to_mime_type($imagechunkcheck[2]); if ($this->inline_attachments === false) { // skip entirely unset($thisfile_ape_items_current['data']); break; } if ($this->inline_attachments === true) { // great } elseif (is_int($this->inline_attachments)) { if ($this->inline_attachments < $thisfile_ape_items_current['data_length']) { // too big, skip $this->warning('attachment at '.$thisfile_ape_items_current['offset'].' is too large to process inline ('.number_format($thisfile_ape_items_current['data_length']).' bytes)'); unset($thisfile_ape_items_current['data']); break; } } elseif (is_string($this->inline_attachments)) { $this->inline_attachments = rtrim(str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $this->inline_attachments), DIRECTORY_SEPARATOR); if (!is_dir($this->inline_attachments) || !getID3::is_writable($this->inline_attachments)) { // cannot write, skip $this->warning('attachment at '.$thisfile_ape_items_current['offset'].' cannot be saved to "'.$this->inline_attachments.'" (not writable)'); unset($thisfile_ape_items_current['data']); break; } } // if we get this far, must be OK if (is_string($this->inline_attachments)) { $destination_filename = $this->inline_attachments.DIRECTORY_SEPARATOR.md5($info['filenamepath']).'_'.$thisfile_ape_items_current['data_offset']; if (!file_exists($destination_filename) || getID3::is_writable($destination_filename)) { file_put_contents($destination_filename, $thisfile_ape_items_current['data']); } else { $this->warning('attachment at '.$thisfile_ape_items_current['offset'].' cannot be saved to "'.$destination_filename.'" (not writable)'); } $thisfile_ape_items_current['data_filename'] = $destination_filename; unset($thisfile_ape_items_current['data']); } else { if (!isset($info['ape']['comments']['picture'])) { $info['ape']['comments']['picture'] = array(); } $comments_picture_data = array(); foreach (array('data', 'image_mime', 'image_width', 'image_height', 'imagetype', 'picturetype', 'description', 'datalength') as $picture_key) { if (isset($thisfile_ape_items_current[$picture_key])) { $comments_picture_data[$picture_key] = $thisfile_ape_items_current[$picture_key]; } } $info['ape']['comments']['picture'][] = $comments_picture_data; unset($comments_picture_data); } } while (false); // @phpstan-ignore-line break; default: if (is_array($thisfile_ape_items_current['data'])) { foreach ($thisfile_ape_items_current['data'] as $comment) { $thisfile_ape['comments'][strtolower($item_key)][] = $comment; } } break; } } if (empty($thisfile_replaygain)) { unset($info['replay_gain']); } return true; } /** * @param string $APEheaderFooterData * * @return array|false */ public function parseAPEheaderFooter($APEheaderFooterData) { // http://www.uni-jena.de/~pfk/mpp/sv8/apeheader.html // shortcut $headerfooterinfo = array(); $headerfooterinfo['raw'] = array(); $headerfooterinfo_raw = &$headerfooterinfo['raw']; $headerfooterinfo_raw['footer_tag'] = substr($APEheaderFooterData, 0, 8); if ($headerfooterinfo_raw['footer_tag'] != 'APETAGEX') { return false; } $headerfooterinfo_raw['version'] = getid3_lib::LittleEndian2Int(substr($APEheaderFooterData, 8, 4)); $headerfooterinfo_raw['tagsize'] = getid3_lib::LittleEndian2Int(substr($APEheaderFooterData, 12, 4)); $headerfooterinfo_raw['tag_items'] = getid3_lib::LittleEndian2Int(substr($APEheaderFooterData, 16, 4)); $headerfooterinfo_raw['global_flags'] = getid3_lib::LittleEndian2Int(substr($APEheaderFooterData, 20, 4)); $headerfooterinfo_raw['reserved'] = substr($APEheaderFooterData, 24, 8); $headerfooterinfo['tag_version'] = $headerfooterinfo_raw['version'] / 1000; if ($headerfooterinfo['tag_version'] >= 2) { $headerfooterinfo['flags'] = $this->parseAPEtagFlags($headerfooterinfo_raw['global_flags']); } return $headerfooterinfo; } /** * @param int $rawflagint * * @return array */ public function parseAPEtagFlags($rawflagint) { // "Note: APE Tags 1.0 do not use any of the APE Tag flags. // All are set to zero on creation and ignored on reading." // http://wiki.hydrogenaud.io/index.php?title=Ape_Tags_Flags $flags = array(); $flags['header'] = (bool) ($rawflagint & 0x80000000); $flags['footer'] = (bool) ($rawflagint & 0x40000000); $flags['this_is_header'] = (bool) ($rawflagint & 0x20000000); $flags['item_contents_raw'] = ($rawflagint & 0x00000006) >> 1; $flags['read_only'] = (bool) ($rawflagint & 0x00000001); $flags['item_contents'] = $this->APEcontentTypeFlagLookup($flags['item_contents_raw']); return $flags; } /** * @param int $contenttypeid * * @return string */ public function APEcontentTypeFlagLookup($contenttypeid) { static $APEcontentTypeFlagLookup = array( 0 => 'utf-8', 1 => 'binary', 2 => 'external', 3 => 'reserved' ); return (isset($APEcontentTypeFlagLookup[$contenttypeid]) ? $APEcontentTypeFlagLookup[$contenttypeid] : 'invalid'); } /** * @param string $itemkey * * @return bool */ public function APEtagItemIsUTF8Lookup($itemkey) { static $APEtagItemIsUTF8Lookup = array( 'title', 'subtitle', 'artist', 'album', 'debut album', 'publisher', 'conductor', 'track', 'composer', 'comment', 'copyright', 'publicationright', 'file', 'year', 'record date', 'record location', 'genre', 'media', 'related', 'isrc', 'abstract', 'language', 'bibliography' ); return in_array(strtolower($itemkey), $APEtagItemIsUTF8Lookup); } }