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1 <?php 2 3 ///////////////////////////////////////////////////////////////// 4 /// getID3() by James Heinrich <info@getid3.org> // 5 // available at https://github.com/JamesHeinrich/getID3 // 6 // or https://www.getid3.org // 7 // or http://getid3.sourceforge.net // 8 // see readme.txt for more details // 9 ///////////////////////////////////////////////////////////////// 10 // // 11 // module.tag.apetag.php // 12 // module for analyzing APE tags // 13 // dependencies: NONE // 14 // /// 15 ///////////////////////////////////////////////////////////////// 16 17 if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers 18 exit; 19 } 20 21 class getid3_apetag extends getid3_handler 22 { 23 /** 24 * true: return full data for all attachments; 25 * false: return no data for all attachments; 26 * integer: return data for attachments <= than this; 27 * string: save as file to this directory. 28 * 29 * @var int|bool|string 30 */ 31 public $inline_attachments = true; 32 33 public $overrideendoffset = 0; 34 35 /** 36 * @return bool 37 */ 38 public function Analyze() { 39 $info = &$this->getid3->info; 40 41 if (!getid3_lib::intValueSupported($info['filesize'])) { 42 $this->warning('Unable to check for APEtags because file is larger than '.round(PHP_INT_MAX / 1073741824).'GB'); 43 return false; 44 } 45 46 $id3v1tagsize = 128; 47 $apetagheadersize = 32; 48 $lyrics3tagsize = 10; 49 50 if ($this->overrideendoffset == 0) { 51 52 $this->fseek(0 - $id3v1tagsize - $apetagheadersize - $lyrics3tagsize, SEEK_END); 53 $APEfooterID3v1 = $this->fread($id3v1tagsize + $apetagheadersize + $lyrics3tagsize); 54 55 //if (preg_match('/APETAGEX.{24}TAG.{125}$/i', $APEfooterID3v1)) { 56 if (substr($APEfooterID3v1, strlen($APEfooterID3v1) - $id3v1tagsize - $apetagheadersize, 8) == 'APETAGEX') { 57 58 // APE tag found before ID3v1 59 $info['ape']['tag_offset_end'] = $info['filesize'] - $id3v1tagsize; 60 61 //} elseif (preg_match('/APETAGEX.{24}$/i', $APEfooterID3v1)) { 62 } elseif (substr($APEfooterID3v1, strlen($APEfooterID3v1) - $apetagheadersize, 8) == 'APETAGEX') { 63 64 // APE tag found, no ID3v1 65 $info['ape']['tag_offset_end'] = $info['filesize']; 66 67 } 68 69 } else { 70 71 $this->fseek($this->overrideendoffset - $apetagheadersize); 72 if ($this->fread(8) == 'APETAGEX') { 73 $info['ape']['tag_offset_end'] = $this->overrideendoffset; 74 } 75 76 } 77 if (!isset($info['ape']['tag_offset_end'])) { 78 79 // APE tag not found 80 unset($info['ape']); 81 return false; 82 83 } 84 85 // shortcut 86 $thisfile_ape = &$info['ape']; 87 88 $this->fseek($thisfile_ape['tag_offset_end'] - $apetagheadersize); 89 $APEfooterData = $this->fread(32); 90 if (!($thisfile_ape['footer'] = $this->parseAPEheaderFooter($APEfooterData))) { 91 $this->error('Error parsing APE footer at offset '.$thisfile_ape['tag_offset_end']); 92 return false; 93 } 94 95 if (isset($thisfile_ape['footer']['flags']['header']) && $thisfile_ape['footer']['flags']['header']) { 96 $this->fseek($thisfile_ape['tag_offset_end'] - $thisfile_ape['footer']['raw']['tagsize'] - $apetagheadersize); 97 $thisfile_ape['tag_offset_start'] = $this->ftell(); 98 $APEtagData = $this->fread($thisfile_ape['footer']['raw']['tagsize'] + $apetagheadersize); 99 } else { 100 $thisfile_ape['tag_offset_start'] = $thisfile_ape['tag_offset_end'] - $thisfile_ape['footer']['raw']['tagsize']; 101 $this->fseek($thisfile_ape['tag_offset_start']); 102 $APEtagData = $this->fread($thisfile_ape['footer']['raw']['tagsize']); 103 } 104 $info['avdataend'] = $thisfile_ape['tag_offset_start']; 105 106 if (isset($info['id3v1']['tag_offset_start']) && ($info['id3v1']['tag_offset_start'] < $thisfile_ape['tag_offset_end'])) { 107 $this->warning('ID3v1 tag information ignored since it appears to be a false synch in APEtag data'); 108 unset($info['id3v1']); 109 foreach ($info['warning'] as $key => $value) { 110 if ($value == 'Some ID3v1 fields do not use NULL characters for padding') { 111 unset($info['warning'][$key]); 112 sort($info['warning']); 113 break; 114 } 115 } 116 } 117 118 $offset = 0; 119 if (isset($thisfile_ape['footer']['flags']['header']) && $thisfile_ape['footer']['flags']['header']) { 120 if ($thisfile_ape['header'] = $this->parseAPEheaderFooter(substr($APEtagData, 0, $apetagheadersize))) { 121 $offset += $apetagheadersize; 122 } else { 123 $this->error('Error parsing APE header at offset '.$thisfile_ape['tag_offset_start']); 124 return false; 125 } 126 } 127 128 // shortcut 129 $info['replay_gain'] = array(); 130 $thisfile_replaygain = &$info['replay_gain']; 131 132 for ($i = 0; $i < $thisfile_ape['footer']['raw']['tag_items']; $i++) { 133 $value_size = getid3_lib::LittleEndian2Int(substr($APEtagData, $offset, 4)); 134 $offset += 4; 135 $item_flags = getid3_lib::LittleEndian2Int(substr($APEtagData, $offset, 4)); 136 $offset += 4; 137 if (strstr(substr($APEtagData, $offset), "\x00") === false) { 138 $this->error('Cannot find null-byte (0x00) separator between ItemKey #'.$i.' and value. ItemKey starts '.$offset.' bytes into the APE tag, at file offset '.($thisfile_ape['tag_offset_start'] + $offset)); 139 return false; 140 } 141 $ItemKeyLength = strpos($APEtagData, "\x00", $offset) - $offset; 142 $item_key = strtolower(substr($APEtagData, $offset, $ItemKeyLength)); 143 144 // shortcut 145 $thisfile_ape['items'][$item_key] = array(); 146 $thisfile_ape_items_current = &$thisfile_ape['items'][$item_key]; 147 148 $thisfile_ape_items_current['offset'] = $thisfile_ape['tag_offset_start'] + $offset; 149 150 $offset += ($ItemKeyLength + 1); // skip 0x00 terminator 151 $thisfile_ape_items_current['data'] = substr($APEtagData, $offset, $value_size); 152 $offset += $value_size; 153 154 $thisfile_ape_items_current['flags'] = $this->parseAPEtagFlags($item_flags); 155 switch ($thisfile_ape_items_current['flags']['item_contents_raw']) { 156 case 0: // UTF-8 157 case 2: // Locator (URL, filename, etc), UTF-8 encoded 158 $thisfile_ape_items_current['data'] = explode("\x00", $thisfile_ape_items_current['data']); 159 break; 160 161 case 1: // binary data 162 default: 163 break; 164 } 165 166 switch (strtolower($item_key)) { 167 // http://wiki.hydrogenaud.io/index.php?title=ReplayGain#MP3Gain 168 case 'replaygain_track_gain': 169 if (preg_match('#^([\\-\\+][0-9\\.,]{8})( dB)?$#', $thisfile_ape_items_current['data'][0], $matches)) { 170 $thisfile_replaygain['track']['adjustment'] = (float) str_replace(',', '.', $matches[1]); // float casting will see "0,95" as zero! 171 $thisfile_replaygain['track']['originator'] = 'unspecified'; 172 } else { 173 $this->warning('MP3gainTrackGain value in APEtag appears invalid: "'.$thisfile_ape_items_current['data'][0].'"'); 174 } 175 break; 176 177 case 'replaygain_track_peak': 178 if (preg_match('#^([0-9\\.,]{8})$#', $thisfile_ape_items_current['data'][0], $matches)) { 179 $thisfile_replaygain['track']['peak'] = (float) str_replace(',', '.', $matches[1]); // float casting will see "0,95" as zero! 180 $thisfile_replaygain['track']['originator'] = 'unspecified'; 181 if ($thisfile_replaygain['track']['peak'] <= 0) { 182 $this->warning('ReplayGain Track peak from APEtag appears invalid: '.$thisfile_replaygain['track']['peak'].' (original value = "'.$thisfile_ape_items_current['data'][0].'")'); 183 } 184 } else { 185 $this->warning('MP3gainTrackPeak value in APEtag appears invalid: "'.$thisfile_ape_items_current['data'][0].'"'); 186 } 187 break; 188 189 case 'replaygain_album_gain': 190 if (preg_match('#^([\\-\\+][0-9\\.,]{8})( dB)?$#', $thisfile_ape_items_current['data'][0], $matches)) { 191 $thisfile_replaygain['album']['adjustment'] = (float) str_replace(',', '.', $matches[1]); // float casting will see "0,95" as zero! 192 $thisfile_replaygain['album']['originator'] = 'unspecified'; 193 } else { 194 $this->warning('MP3gainAlbumGain value in APEtag appears invalid: "'.$thisfile_ape_items_current['data'][0].'"'); 195 } 196 break; 197 198 case 'replaygain_album_peak': 199 if (preg_match('#^([0-9\\.,]{8})$#', $thisfile_ape_items_current['data'][0], $matches)) { 200 $thisfile_replaygain['album']['peak'] = (float) str_replace(',', '.', $matches[1]); // float casting will see "0,95" as zero! 201 $thisfile_replaygain['album']['originator'] = 'unspecified'; 202 if ($thisfile_replaygain['album']['peak'] <= 0) { 203 $this->warning('ReplayGain Album peak from APEtag appears invalid: '.$thisfile_replaygain['album']['peak'].' (original value = "'.$thisfile_ape_items_current['data'][0].'")'); 204 } 205 } else { 206 $this->warning('MP3gainAlbumPeak value in APEtag appears invalid: "'.$thisfile_ape_items_current['data'][0].'"'); 207 } 208 break; 209 210 case 'mp3gain_undo': 211 if (preg_match('#^[\\-\\+][0-9]{3},[\\-\\+][0-9]{3},[NW]$#', $thisfile_ape_items_current['data'][0])) { 212 list($mp3gain_undo_left, $mp3gain_undo_right, $mp3gain_undo_wrap) = explode(',', $thisfile_ape_items_current['data'][0]); 213 $thisfile_replaygain['mp3gain']['undo_left'] = intval($mp3gain_undo_left); 214 $thisfile_replaygain['mp3gain']['undo_right'] = intval($mp3gain_undo_right); 215 $thisfile_replaygain['mp3gain']['undo_wrap'] = (($mp3gain_undo_wrap == 'Y') ? true : false); 216 } else { 217 $this->warning('MP3gainUndo value in APEtag appears invalid: "'.$thisfile_ape_items_current['data'][0].'"'); 218 } 219 break; 220 221 case 'mp3gain_minmax': 222 if (preg_match('#^[0-9]{3},[0-9]{3}$#', $thisfile_ape_items_current['data'][0])) { 223 list($mp3gain_globalgain_min, $mp3gain_globalgain_max) = explode(',', $thisfile_ape_items_current['data'][0]); 224 $thisfile_replaygain['mp3gain']['globalgain_track_min'] = intval($mp3gain_globalgain_min); 225 $thisfile_replaygain['mp3gain']['globalgain_track_max'] = intval($mp3gain_globalgain_max); 226 } else { 227 $this->warning('MP3gainMinMax value in APEtag appears invalid: "'.$thisfile_ape_items_current['data'][0].'"'); 228 } 229 break; 230 231 case 'mp3gain_album_minmax': 232 if (preg_match('#^[0-9]{3},[0-9]{3}$#', $thisfile_ape_items_current['data'][0])) { 233 list($mp3gain_globalgain_album_min, $mp3gain_globalgain_album_max) = explode(',', $thisfile_ape_items_current['data'][0]); 234 $thisfile_replaygain['mp3gain']['globalgain_album_min'] = intval($mp3gain_globalgain_album_min); 235 $thisfile_replaygain['mp3gain']['globalgain_album_max'] = intval($mp3gain_globalgain_album_max); 236 } else { 237 $this->warning('MP3gainAlbumMinMax value in APEtag appears invalid: "'.$thisfile_ape_items_current['data'][0].'"'); 238 } 239 break; 240 241 case 'tracknumber': 242 if (is_array($thisfile_ape_items_current['data'])) { 243 foreach ($thisfile_ape_items_current['data'] as $comment) { 244 $thisfile_ape['comments']['track_number'][] = $comment; 245 } 246 } 247 break; 248 249 case 'cover art (artist)': 250 case 'cover art (back)': 251 case 'cover art (band logo)': 252 case 'cover art (band)': 253 case 'cover art (colored fish)': 254 case 'cover art (composer)': 255 case 'cover art (conductor)': 256 case 'cover art (front)': 257 case 'cover art (icon)': 258 case 'cover art (illustration)': 259 case 'cover art (lead)': 260 case 'cover art (leaflet)': 261 case 'cover art (lyricist)': 262 case 'cover art (media)': 263 case 'cover art (movie scene)': 264 case 'cover art (other icon)': 265 case 'cover art (other)': 266 case 'cover art (performance)': 267 case 'cover art (publisher logo)': 268 case 'cover art (recording)': 269 case 'cover art (studio)': 270 // list of possible cover arts from http://taglib-sharp.sourcearchive.com/documentation/2.0.3.0-2/Ape_2Tag_8cs-source.html 271 if (is_array($thisfile_ape_items_current['data'])) { 272 $this->warning('APEtag "'.$item_key.'" should be flagged as Binary data, but was incorrectly flagged as UTF-8'); 273 $thisfile_ape_items_current['data'] = implode("\x00", $thisfile_ape_items_current['data']); 274 } 275 list($thisfile_ape_items_current['filename'], $thisfile_ape_items_current['data']) = explode("\x00", $thisfile_ape_items_current['data'], 2); 276 $thisfile_ape_items_current['data_offset'] = $thisfile_ape_items_current['offset'] + strlen($thisfile_ape_items_current['filename']."\x00"); 277 $thisfile_ape_items_current['data_length'] = strlen($thisfile_ape_items_current['data']); 278 279 do { 280 $thisfile_ape_items_current['image_mime'] = ''; 281 $imageinfo = array(); 282 $imagechunkcheck = getid3_lib::GetDataImageSize($thisfile_ape_items_current['data'], $imageinfo); 283 if (($imagechunkcheck === false) || !isset($imagechunkcheck[2])) { 284 $this->warning('APEtag "'.$item_key.'" contains invalid image data'); 285 break; 286 } 287 $thisfile_ape_items_current['image_mime'] = image_type_to_mime_type($imagechunkcheck[2]); 288 289 if ($this->inline_attachments === false) { 290 // skip entirely 291 unset($thisfile_ape_items_current['data']); 292 break; 293 } 294 if ($this->inline_attachments === true) { 295 // great 296 } elseif (is_int($this->inline_attachments)) { 297 if ($this->inline_attachments < $thisfile_ape_items_current['data_length']) { 298 // too big, skip 299 $this->warning('attachment at '.$thisfile_ape_items_current['offset'].' is too large to process inline ('.number_format($thisfile_ape_items_current['data_length']).' bytes)'); 300 unset($thisfile_ape_items_current['data']); 301 break; 302 } 303 } elseif (is_string($this->inline_attachments)) { 304 $this->inline_attachments = rtrim(str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $this->inline_attachments), DIRECTORY_SEPARATOR); 305 if (!is_dir($this->inline_attachments) || !getID3::is_writable($this->inline_attachments)) { 306 // cannot write, skip 307 $this->warning('attachment at '.$thisfile_ape_items_current['offset'].' cannot be saved to "'.$this->inline_attachments.'" (not writable)'); 308 unset($thisfile_ape_items_current['data']); 309 break; 310 } 311 } 312 // if we get this far, must be OK 313 if (is_string($this->inline_attachments)) { 314 $destination_filename = $this->inline_attachments.DIRECTORY_SEPARATOR.md5($info['filenamepath']).'_'.$thisfile_ape_items_current['data_offset']; 315 if (!file_exists($destination_filename) || getID3::is_writable($destination_filename)) { 316 file_put_contents($destination_filename, $thisfile_ape_items_current['data']); 317 } else { 318 $this->warning('attachment at '.$thisfile_ape_items_current['offset'].' cannot be saved to "'.$destination_filename.'" (not writable)'); 319 } 320 $thisfile_ape_items_current['data_filename'] = $destination_filename; 321 unset($thisfile_ape_items_current['data']); 322 } else { 323 if (!isset($info['ape']['comments']['picture'])) { 324 $info['ape']['comments']['picture'] = array(); 325 } 326 $comments_picture_data = array(); 327 foreach (array('data', 'image_mime', 'image_width', 'image_height', 'imagetype', 'picturetype', 'description', 'datalength') as $picture_key) { 328 if (isset($thisfile_ape_items_current[$picture_key])) { 329 $comments_picture_data[$picture_key] = $thisfile_ape_items_current[$picture_key]; 330 } 331 } 332 $info['ape']['comments']['picture'][] = $comments_picture_data; 333 unset($comments_picture_data); 334 } 335 } while (false); 336 break; 337 338 default: 339 if (is_array($thisfile_ape_items_current['data'])) { 340 foreach ($thisfile_ape_items_current['data'] as $comment) { 341 $thisfile_ape['comments'][strtolower($item_key)][] = $comment; 342 } 343 } 344 break; 345 } 346 347 } 348 if (empty($thisfile_replaygain)) { 349 unset($info['replay_gain']); 350 } 351 return true; 352 } 353 354 /** 355 * @param string $APEheaderFooterData 356 * 357 * @return array|false 358 */ 359 public function parseAPEheaderFooter($APEheaderFooterData) { 360 // http://www.uni-jena.de/~pfk/mpp/sv8/apeheader.html 361 362 // shortcut 363 $headerfooterinfo = array(); 364 $headerfooterinfo['raw'] = array(); 365 $headerfooterinfo_raw = &$headerfooterinfo['raw']; 366 367 $headerfooterinfo_raw['footer_tag'] = substr($APEheaderFooterData, 0, 8); 368 if ($headerfooterinfo_raw['footer_tag'] != 'APETAGEX') { 369 return false; 370 } 371 $headerfooterinfo_raw['version'] = getid3_lib::LittleEndian2Int(substr($APEheaderFooterData, 8, 4)); 372 $headerfooterinfo_raw['tagsize'] = getid3_lib::LittleEndian2Int(substr($APEheaderFooterData, 12, 4)); 373 $headerfooterinfo_raw['tag_items'] = getid3_lib::LittleEndian2Int(substr($APEheaderFooterData, 16, 4)); 374 $headerfooterinfo_raw['global_flags'] = getid3_lib::LittleEndian2Int(substr($APEheaderFooterData, 20, 4)); 375 $headerfooterinfo_raw['reserved'] = substr($APEheaderFooterData, 24, 8); 376 377 $headerfooterinfo['tag_version'] = $headerfooterinfo_raw['version'] / 1000; 378 if ($headerfooterinfo['tag_version'] >= 2) { 379 $headerfooterinfo['flags'] = $this->parseAPEtagFlags($headerfooterinfo_raw['global_flags']); 380 } 381 return $headerfooterinfo; 382 } 383 384 /** 385 * @param int $rawflagint 386 * 387 * @return array 388 */ 389 public function parseAPEtagFlags($rawflagint) { 390 // "Note: APE Tags 1.0 do not use any of the APE Tag flags. 391 // All are set to zero on creation and ignored on reading." 392 // http://wiki.hydrogenaud.io/index.php?title=Ape_Tags_Flags 393 $flags = array(); 394 $flags['header'] = (bool) ($rawflagint & 0x80000000); 395 $flags['footer'] = (bool) ($rawflagint & 0x40000000); 396 $flags['this_is_header'] = (bool) ($rawflagint & 0x20000000); 397 $flags['item_contents_raw'] = ($rawflagint & 0x00000006) >> 1; 398 $flags['read_only'] = (bool) ($rawflagint & 0x00000001); 399 400 $flags['item_contents'] = $this->APEcontentTypeFlagLookup($flags['item_contents_raw']); 401 402 return $flags; 403 } 404 405 /** 406 * @param int $contenttypeid 407 * 408 * @return string 409 */ 410 public function APEcontentTypeFlagLookup($contenttypeid) { 411 static $APEcontentTypeFlagLookup = array( 412 0 => 'utf-8', 413 1 => 'binary', 414 2 => 'external', 415 3 => 'reserved' 416 ); 417 return (isset($APEcontentTypeFlagLookup[$contenttypeid]) ? $APEcontentTypeFlagLookup[$contenttypeid] : 'invalid'); 418 } 419 420 /** 421 * @param string $itemkey 422 * 423 * @return bool 424 */ 425 public function APEtagItemIsUTF8Lookup($itemkey) { 426 static $APEtagItemIsUTF8Lookup = array( 427 'title', 428 'subtitle', 429 'artist', 430 'album', 431 'debut album', 432 'publisher', 433 'conductor', 434 'track', 435 'composer', 436 'comment', 437 'copyright', 438 'publicationright', 439 'file', 440 'year', 441 'record date', 442 'record location', 443 'genre', 444 'media', 445 'related', 446 'isrc', 447 'abstract', 448 'language', 449 'bibliography' 450 ); 451 return in_array(strtolower($itemkey), $APEtagItemIsUTF8Lookup); 452 } 453 454 }
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