name : module.audio.bonk.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.audio.la.php // // module for analyzing BONK audio files // // dependencies: module.tag.id3v2.php (optional) // // /// ///////////////////////////////////////////////////////////////// if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers exit; } class getid3_bonk extends getid3_handler { /** * @return bool */ public function Analyze() { $info = &$this->getid3->info; // shortcut $info['bonk'] = array(); $thisfile_bonk = &$info['bonk']; $thisfile_bonk['dataoffset'] = $info['avdataoffset']; $thisfile_bonk['dataend'] = $info['avdataend']; if (!getid3_lib::intValueSupported($thisfile_bonk['dataend'])) { $this->warning('Unable to parse BONK file from end (v0.6+ preferred method) because PHP filesystem functions only support up to '.round(PHP_INT_MAX / 1073741824).'GB'); } else { // scan-from-end method, for v0.6 and higher $this->fseek($thisfile_bonk['dataend'] - 8); $PossibleBonkTag = $this->fread(8); while ($this->BonkIsValidTagName(substr($PossibleBonkTag, 4, 4), true)) { $BonkTagSize = getid3_lib::LittleEndian2Int(substr($PossibleBonkTag, 0, 4)); $this->fseek(0 - $BonkTagSize, SEEK_CUR); $BonkTagOffset = $this->ftell(); $TagHeaderTest = $this->fread(5); if (($TagHeaderTest[0] != "\x00") || (substr($PossibleBonkTag, 4, 4) != strtolower(substr($PossibleBonkTag, 4, 4)))) { $this->error('Expecting "'.getid3_lib::PrintHexBytes("\x00".strtoupper(substr($PossibleBonkTag, 4, 4))).'" at offset '.$BonkTagOffset.', found "'.getid3_lib::PrintHexBytes($TagHeaderTest).'"'); return false; } $BonkTagName = substr($TagHeaderTest, 1, 4); $thisfile_bonk[$BonkTagName]['size'] = $BonkTagSize; $thisfile_bonk[$BonkTagName]['offset'] = $BonkTagOffset; $this->HandleBonkTags($BonkTagName); $NextTagEndOffset = $BonkTagOffset - 8; if ($NextTagEndOffset < $thisfile_bonk['dataoffset']) { if (empty($info['audio']['encoder'])) { $info['audio']['encoder'] = 'Extended BONK v0.9+'; } return true; } $this->fseek($NextTagEndOffset); $PossibleBonkTag = $this->fread(8); } } // seek-from-beginning method for v0.4 and v0.5 if (empty($thisfile_bonk['BONK'])) { $this->fseek($thisfile_bonk['dataoffset']); do { $TagHeaderTest = $this->fread(5); switch ($TagHeaderTest) { case "\x00".'BONK': if (empty($info['audio']['encoder'])) { $info['audio']['encoder'] = 'BONK v0.4'; } break; case "\x00".'INFO': $info['audio']['encoder'] = 'Extended BONK v0.5'; break; default: break 2; } $BonkTagName = substr($TagHeaderTest, 1, 4); $thisfile_bonk[$BonkTagName]['size'] = $thisfile_bonk['dataend'] - $thisfile_bonk['dataoffset']; $thisfile_bonk[$BonkTagName]['offset'] = $thisfile_bonk['dataoffset']; $this->HandleBonkTags($BonkTagName); } while (true); } // parse META block for v0.6 - v0.8 if (empty($thisfile_bonk['INFO']) && isset($thisfile_bonk['META']['tags']['info'])) { $this->fseek($thisfile_bonk['META']['tags']['info']); $TagHeaderTest = $this->fread(5); if ($TagHeaderTest == "\x00".'INFO') { $info['audio']['encoder'] = 'Extended BONK v0.6 - v0.8'; $BonkTagName = substr($TagHeaderTest, 1, 4); $thisfile_bonk[$BonkTagName]['size'] = $thisfile_bonk['dataend'] - $thisfile_bonk['dataoffset']; $thisfile_bonk[$BonkTagName]['offset'] = $thisfile_bonk['dataoffset']; $this->HandleBonkTags($BonkTagName); } } if (empty($info['audio']['encoder'])) { $info['audio']['encoder'] = 'Extended BONK v0.9+'; } if (empty($thisfile_bonk['BONK'])) { unset($info['bonk']); } return true; } /** * @param string $BonkTagName */ public function HandleBonkTags($BonkTagName) { $info = &$this->getid3->info; switch ($BonkTagName) { case 'BONK': // shortcut $thisfile_bonk_BONK = &$info['bonk']['BONK']; $BonkData = "\x00".'BONK'.$this->fread(17); $thisfile_bonk_BONK['version'] = getid3_lib::LittleEndian2Int(substr($BonkData, 5, 1)); $thisfile_bonk_BONK['number_samples'] = getid3_lib::LittleEndian2Int(substr($BonkData, 6, 4)); $thisfile_bonk_BONK['sample_rate'] = getid3_lib::LittleEndian2Int(substr($BonkData, 10, 4)); $thisfile_bonk_BONK['channels'] = getid3_lib::LittleEndian2Int(substr($BonkData, 14, 1)); $thisfile_bonk_BONK['lossless'] = (bool) getid3_lib::LittleEndian2Int(substr($BonkData, 15, 1)); $thisfile_bonk_BONK['joint_stereo'] = (bool) getid3_lib::LittleEndian2Int(substr($BonkData, 16, 1)); $thisfile_bonk_BONK['number_taps'] = getid3_lib::LittleEndian2Int(substr($BonkData, 17, 2)); $thisfile_bonk_BONK['downsampling_ratio'] = getid3_lib::LittleEndian2Int(substr($BonkData, 19, 1)); $thisfile_bonk_BONK['samples_per_packet'] = getid3_lib::LittleEndian2Int(substr($BonkData, 20, 2)); $info['avdataoffset'] = $thisfile_bonk_BONK['offset'] + 5 + 17; $info['avdataend'] = $thisfile_bonk_BONK['offset'] + $thisfile_bonk_BONK['size']; $info['fileformat'] = 'bonk'; $info['audio']['dataformat'] = 'bonk'; $info['audio']['bitrate_mode'] = 'vbr'; // assumed $info['audio']['channels'] = $thisfile_bonk_BONK['channels']; $info['audio']['sample_rate'] = $thisfile_bonk_BONK['sample_rate']; $info['audio']['channelmode'] = ($thisfile_bonk_BONK['joint_stereo'] ? 'joint stereo' : 'stereo'); $info['audio']['lossless'] = $thisfile_bonk_BONK['lossless']; $info['audio']['codec'] = 'bonk'; $info['playtime_seconds'] = getid3_lib::SafeDiv($thisfile_bonk_BONK['number_samples'], $thisfile_bonk_BONK['sample_rate'] * $thisfile_bonk_BONK['channels']); if ($info['playtime_seconds'] > 0) { $info['audio']['bitrate'] = (($info['bonk']['dataend'] - $info['bonk']['dataoffset']) * 8) / $info['playtime_seconds']; } break; case 'INFO': // shortcut $thisfile_bonk_INFO = &$info['bonk']['INFO']; $thisfile_bonk_INFO['version'] = getid3_lib::LittleEndian2Int($this->fread(1)); $thisfile_bonk_INFO['entries_count'] = 0; $NextInfoDataPair = $this->fread(5); if (!$this->BonkIsValidTagName(substr($NextInfoDataPair, 1, 4))) { while (!feof($this->getid3->fp)) { //$CurrentSeekInfo['offset'] = getid3_lib::LittleEndian2Int(substr($NextInfoDataPair, 0, 4)); //$CurrentSeekInfo['nextbit'] = getid3_lib::LittleEndian2Int(substr($NextInfoDataPair, 4, 1)); //$thisfile_bonk_INFO[] = $CurrentSeekInfo; $NextInfoDataPair = $this->fread(5); if ($this->BonkIsValidTagName(substr($NextInfoDataPair, 1, 4))) { $this->fseek(-5, SEEK_CUR); break; } $thisfile_bonk_INFO['entries_count']++; } } break; case 'META': $BonkData = "\x00".'META'.$this->fread($info['bonk']['META']['size'] - 5); $info['bonk']['META']['version'] = getid3_lib::LittleEndian2Int(substr($BonkData, 5, 1)); $MetaTagEntries = floor(((strlen($BonkData) - 8) - 6) / 8); // BonkData - xxxxmeta - ØMETA $offset = 6; for ($i = 0; $i < $MetaTagEntries; $i++) { $MetaEntryTagName = substr($BonkData, $offset, 4); $offset += 4; $MetaEntryTagOffset = getid3_lib::LittleEndian2Int(substr($BonkData, $offset, 4)); $offset += 4; $info['bonk']['META']['tags'][$MetaEntryTagName] = $MetaEntryTagOffset; } break; case ' ID3': $info['audio']['encoder'] = 'Extended BONK v0.9+'; // ID3v2 checking is optional if (class_exists('getid3_id3v2')) { $getid3_temp = new getID3(); $getid3_temp->openfile($this->getid3->filename, $this->getid3->info['filesize'], $this->getid3->fp); $getid3_id3v2 = new getid3_id3v2($getid3_temp); $getid3_id3v2->StartingOffset = $info['bonk'][' ID3']['offset'] + 2; $info['bonk'][' ID3']['valid'] = $getid3_id3v2->Analyze(); if ($info['bonk'][' ID3']['valid']) { $info['id3v2'] = $getid3_temp->info['id3v2']; } unset($getid3_temp, $getid3_id3v2); } break; default: $this->warning('Unexpected Bonk tag "'.$BonkTagName.'" at offset '.$info['bonk'][$BonkTagName]['offset']); break; } } /** * @param string $PossibleBonkTag * @param bool $ignorecase * * @return bool */ public static function BonkIsValidTagName($PossibleBonkTag, $ignorecase=false) { static $BonkIsValidTagName = array('BONK', 'INFO', ' ID3', 'META'); foreach ($BonkIsValidTagName as $validtagname) { if ($validtagname == $PossibleBonkTag) { return true; } elseif ($ignorecase && (strtolower($validtagname) == strtolower($PossibleBonkTag))) { return true; } } return false; } }