--- /dev/null
+<?php
+/////////////////////////////////////////////////////////////////
+/// getID3() by James Heinrich <info@getid3.org> //
+// available at http://getid3.sourceforge.net //
+// or http://www.getid3.org //
+/////////////////////////////////////////////////////////////////
+// See readme.txt for more details //
+/////////////////////////////////////////////////////////////////
+// //
+// module.tag.apetag.php //
+// module for analyzing APE tags //
+// dependencies: NONE //
+// ///
+/////////////////////////////////////////////////////////////////
+
+class getid3_apetag extends getid3_handler
+{
+ public $inline_attachments = true; // 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
+ public $overrideendoffset = 0;
+
+ public function Analyze() {
+ $info = &$this->getid3->info;
+
+ if (!getid3_lib::intValueSupported($info['filesize'])) {
+ $info['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) {
+
+ fseek($this->getid3->fp, 0 - $id3v1tagsize - $apetagheadersize - $lyrics3tagsize, SEEK_END);
+ $APEfooterID3v1 = fread($this->getid3->fp, $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'] = $info['filesize'];
+
+ }
+
+ } else {
+
+ fseek($this->getid3->fp, $this->overrideendoffset - $apetagheadersize, SEEK_SET);
+ if (fread($this->getid3->fp, 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'];
+
+ fseek($this->getid3->fp, $thisfile_ape['tag_offset_end'] - $apetagheadersize, SEEK_SET);
+ $APEfooterData = fread($this->getid3->fp, 32);
+ if (!($thisfile_ape['footer'] = $this->parseAPEheaderFooter($APEfooterData))) {
+ $info['error'][] = 'Error parsing APE footer at offset '.$thisfile_ape['tag_offset_end'];
+ return false;
+ }
+
+ if (isset($thisfile_ape['footer']['flags']['header']) && $thisfile_ape['footer']['flags']['header']) {
+ fseek($this->getid3->fp, $thisfile_ape['tag_offset_end'] - $thisfile_ape['footer']['raw']['tagsize'] - $apetagheadersize, SEEK_SET);
+ $thisfile_ape['tag_offset_start'] = ftell($this->getid3->fp);
+ $APEtagData = fread($this->getid3->fp, $thisfile_ape['footer']['raw']['tagsize'] + $apetagheadersize);
+ } else {
+ $thisfile_ape['tag_offset_start'] = $thisfile_ape['tag_offset_end'] - $thisfile_ape['footer']['raw']['tagsize'];
+ fseek($this->getid3->fp, $thisfile_ape['tag_offset_start'], SEEK_SET);
+ $APEtagData = fread($this->getid3->fp, $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'])) {
+ $info['warning'][] = 'ID3v1 tag information ignored since it appears to be a false synch in APEtag data';
+ unset($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 {
+ $info['error'][] = 'Error parsing APE header at offset '.$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) {
+ $info['error'][] = 'Cannot find null-byte (0x00) seperator between ItemKey #'.$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 3: // Locator (URL, filename, etc), UTF-8 encoded
+ $thisfile_ape_items_current['data'] = explode("\x00", trim($thisfile_ape_items_current['data']));
+ break;
+
+ default: // binary data
+ break;
+ }
+
+ switch (strtolower($item_key)) {
+ case 'replaygain_track_gain':
+ $thisfile_replaygain['track']['adjustment'] = (float) str_replace(',', '.', $thisfile_ape_items_current['data'][0]); // float casting will see "0,95" as zero!
+ $thisfile_replaygain['track']['originator'] = 'unspecified';
+ break;
+
+ case 'replaygain_track_peak':
+ $thisfile_replaygain['track']['peak'] = (float) str_replace(',', '.', $thisfile_ape_items_current['data'][0]); // float casting will see "0,95" as zero!
+ $thisfile_replaygain['track']['originator'] = 'unspecified';
+ if ($thisfile_replaygain['track']['peak'] <= 0) {
+ $info['warning'][] = 'ReplayGain Track peak from APEtag appears invalid: '.$thisfile_replaygain['track']['peak'].' (original value = "'.$thisfile_ape_items_current['data'][0].'")';
+ }
+ break;
+
+ case 'replaygain_album_gain':
+ $thisfile_replaygain['album']['adjustment'] = (float) str_replace(',', '.', $thisfile_ape_items_current['data'][0]); // float casting will see "0,95" as zero!
+ $thisfile_replaygain['album']['originator'] = 'unspecified';
+ break;
+
+ case 'replaygain_album_peak':
+ $thisfile_replaygain['album']['peak'] = (float) str_replace(',', '.', $thisfile_ape_items_current['data'][0]); // float casting will see "0,95" as zero!
+ $thisfile_replaygain['album']['originator'] = 'unspecified';
+ if ($thisfile_replaygain['album']['peak'] <= 0) {
+ $info['warning'][] = 'ReplayGain Album peak from APEtag appears invalid: '.$thisfile_replaygain['album']['peak'].' (original value = "'.$thisfile_ape_items_current['data'][0].'")';
+ }
+ break;
+
+ case 'mp3gain_undo':
+ list($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);
+ break;
+
+ case 'mp3gain_minmax':
+ 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);
+ break;
+
+ case 'mp3gain_album_minmax':
+ 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);
+ break;
+
+ case 'tracknumber':
+ if (is_array($thisfile_ape_items_current['data'])) {
+ foreach ($thisfile_ape_items_current['data'] as $comment) {
+ $thisfile_ape['comments']['track'][] = $comment;
+ }
+ }
+ break;
+
+ case 'cover art (artist)':
+ case 'cover art (back)':
+ case 'cover art (band logo)':
+ case 'cover art (band)':
+ case 'cover art (colored fish)':
+ case 'cover art (composer)':
+ case 'cover art (conductor)':
+ case 'cover art (front)':
+ case 'cover art (icon)':
+ case 'cover art (illustration)':
+ case 'cover art (lead)':
+ case 'cover art (leaflet)':
+ case 'cover art (lyricist)':
+ case 'cover art (media)':
+ case 'cover art (movie scene)':
+ case 'cover art (other icon)':
+ case 'cover art (other)':
+ case 'cover art (performance)':
+ case 'cover art (publisher logo)':
+ case 'cover art (recording)':
+ case 'cover art (studio)':
+ // list of possible cover arts from http://taglib-sharp.sourcearchive.com/documentation/2.0.3.0-2/Ape_2Tag_8cs-source.html
+ list($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']);
+
+ $thisfile_ape_items_current['image_mime'] = '';
+ $imageinfo = array();
+ $imagechunkcheck = getid3_lib::GetDataImageSize($thisfile_ape_items_current['data'], $imageinfo);
+ $thisfile_ape_items_current['image_mime'] = image_type_to_mime_type($imagechunkcheck[2]);
+
+ do {
+ 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
+ $info['warning'][] = 'attachment at '.$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) || !is_writable($this->inline_attachments)) {
+ // cannot write, skip
+ $info['warning'][] = 'attachment at '.$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) || is_writable($destination_filename)) {
+ file_put_contents($destination_filename, $thisfile_ape_items_current['data']);
+ } else {
+ $info['warning'][] = 'attachment at '.$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();
+ }
+ $info['ape']['comments']['picture'][] = array('data'=>$thisfile_ape_items_current['data'], 'image_mime'=>$thisfile_ape_items_current['image_mime']);
+ }
+ } while (false);
+ break;
+
+ default:
+ if (is_array($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($info['replay_gain']);
+ }
+ return true;
+ }
+
+ public function parseAPEheaderFooter($APEheaderFooterData) {
+ // http://www.uni-jena.de/~pfk/mpp/sv8/apeheader.html
+
+ // shortcut
+ $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 $headerfooterinfo;
+ }
+
+ public function parseAPEtagFlags($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://www.uni-jena.de/~pfk/mpp/sv8/apetagflags.html
+ $flags['header'] = (bool) ($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 $flags;
+ }
+
+ public function APEcontentTypeFlagLookup($contenttypeid) {
+ static $APEcontentTypeFlagLookup = array(
+ 0 => 'utf-8',
+ 1 => 'binary',
+ 2 => 'external',
+ 3 => 'reserved'
+ );
+ return (isset($APEcontentTypeFlagLookup[$contenttypeid]) ? $APEcontentTypeFlagLookup[$contenttypeid] : 'invalid');
+ }
+
+ 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);
+ }
+
+}
scripts.mit.edu / autoinstallsdev / wordpress.git / blobdiff