ecommun / owncloud_ynh

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sources/3rdparty/getid3/module.archive.szip.php 3.82 KB
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  <?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.archive.szip.php                                     //
  // module for analyzing SZIP compressed files                  //
  // dependencies: NONE                                          //
  //                                                            ///
  /////////////////////////////////////////////////////////////////
  
  
  class getid3_szip extends getid3_handler
  {
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  	public function Analyze() {
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  		$info = &$this->getid3->info;
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  		$this->fseek($info['avdataoffset']);
  		$SZIPHeader = $this->fread(6);
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  		if (substr($SZIPHeader, 0, 4) != "SZ\x0A\x04") {
  			$info['error'][] = 'Expecting "53 5A 0A 04" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes(substr($SZIPHeader, 0, 4)).'"';
  			return false;
  		}
  		$info['fileformat']            = 'szip';
  		$info['szip']['major_version'] = getid3_lib::BigEndian2Int(substr($SZIPHeader, 4, 1));
  		$info['szip']['minor_version'] = getid3_lib::BigEndian2Int(substr($SZIPHeader, 5, 1));
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  $info['error'][] = 'SZIP parsing not enabled in this version of getID3() ['.$this->getid3->version().']';
  return false;
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  		while (!$this->feof()) {
  			$NextBlockID = $this->fread(2);









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  			switch ($NextBlockID) {
  				case 'SZ':
  					// Note that szip files can be concatenated, this has the same effect as
  					// concatenating the files. this also means that global header blocks
  					// might be present between directory/data blocks.









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  					$this->fseek(4, SEEK_CUR);









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  					break;
  
  				case 'BH':









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  					$BHheaderbytes  = getid3_lib::BigEndian2Int($this->fread(3));
  					$BHheaderdata   = $this->fread($BHheaderbytes);









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  					$BHheaderoffset = 0;
  					while (strpos($BHheaderdata, "\x00", $BHheaderoffset) > 0) {
  						//filename as \0 terminated string  (empty string indicates end)
  						//owner as \0 terminated string (empty is same as last file)
  						//group as \0 terminated string (empty is same as last file)
  						//3 byte filelength in this block
  						//2 byte access flags
  						//4 byte creation time (like in unix)
  						//4 byte modification time (like in unix)
  						//4 byte access time (like in unix)
  
  						$BHdataArray['filename'] = substr($BHheaderdata, $BHheaderoffset, strcspn($BHheaderdata, "\x00"));
  						$BHheaderoffset += (strlen($BHdataArray['filename']) + 1);
  
  						$BHdataArray['owner'] = substr($BHheaderdata, $BHheaderoffset, strcspn($BHheaderdata, "\x00"));
  						$BHheaderoffset += (strlen($BHdataArray['owner']) + 1);
  
  						$BHdataArray['group'] = substr($BHheaderdata, $BHheaderoffset, strcspn($BHheaderdata, "\x00"));
  						$BHheaderoffset += (strlen($BHdataArray['group']) + 1);
  
  						$BHdataArray['filelength'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 3));
  						$BHheaderoffset += 3;
  
  						$BHdataArray['access_flags'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 2));
  						$BHheaderoffset += 2;
  
  						$BHdataArray['creation_time'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 4));
  						$BHheaderoffset += 4;
  
  						$BHdataArray['modification_time'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 4));
  						$BHheaderoffset += 4;
  
  						$BHdataArray['access_time'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 4));
  						$BHheaderoffset += 4;
  
  						$info['szip']['BH'][] = $BHdataArray;
  					}
  					break;
  
  				default:
  					break 2;
  			}
  		}
  
  		return true;
  
  	}
  
  }