<?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.zip.php                                      //// module for analyzing pkZip files                            //// dependencies: NONE                                          ////                                                            ////////////////////////////////////////////////////////////////////// bundled as part of phPOP3clean - http://phpop3clean.sf.net  ///////////////////////////////////////////////////////////////////class getid3_zip{	function getid3_zip(&$fd, &$ThisFileInfo) {		$ThisFileInfo['fileformat']      = 'zip';		$ThisFileInfo['zip']['encoding'] = 'ISO-8859-1';		$ThisFileInfo['zip']['files']    = array();		$ThisFileInfo['zip']['compressed_size']   = 0;		$ThisFileInfo['zip']['uncompressed_size'] = 0;		$ThisFileInfo['zip']['entries_count']     = 0;		$EOCDsearchData    = '';		$EOCDsearchCounter = 0;		while ($EOCDsearchCounter++ < 512) {			fseek($fd, -128 * $EOCDsearchCounter, SEEK_END);			$EOCDsearchData = fread($fd, 128).$EOCDsearchData;			if (strstr($EOCDsearchData, 'PK'."\x05\x06")) {				$EOCDposition = strpos($EOCDsearchData, 'PK'."\x05\x06");				fseek($fd, (-128 * $EOCDsearchCounter) + $EOCDposition, SEEK_END);				$ThisFileInfo['zip']['end_central_directory'] = $this->ZIPparseEndOfCentralDirectory($fd);				fseek($fd, $ThisFileInfo['zip']['end_central_directory']['directory_offset'], SEEK_SET);				$ThisFileInfo['zip']['entries_count'] = 0;				while ($centraldirectoryentry = $this->ZIPparseCentralDirectory($fd)) {					$ThisFileInfo['zip']['central_directory'][] = $centraldirectoryentry;					$ThisFileInfo['zip']['entries_count']++;					$ThisFileInfo['zip']['compressed_size']   += $centraldirectoryentry['compressed_size'];					$ThisFileInfo['zip']['uncompressed_size'] += $centraldirectoryentry['uncompressed_size'];					if ($centraldirectoryentry['uncompressed_size'] > 0) {						$ThisFileInfo['zip']['files'] = getid3_lib::array_merge_clobber($ThisFileInfo['zip']['files'], getid3_lib::CreateDeepArray($centraldirectoryentry['filename'], '/', $centraldirectoryentry['uncompressed_size']));					}				}				if ($ThisFileInfo['zip']['entries_count'] == 0) {					$ThisFileInfo['error'][] = 'No Central Directory entries found (truncated file?)';					return false;				}				if (!empty($ThisFileInfo['zip']['end_central_directory']['comment'])) {					$ThisFileInfo['zip']['comments']['comment'][] = $ThisFileInfo['zip']['end_central_directory']['comment'];				}				if (isset($ThisFileInfo['zip']['central_directory'][0]['compression_method'])) {					$ThisFileInfo['zip']['compression_method'] = $ThisFileInfo['zip']['central_directory'][0]['compression_method'];				}				if (isset($ThisFileInfo['zip']['central_directory'][0]['flags']['compression_speed'])) {					$ThisFileInfo['zip']['compression_speed']  = $ThisFileInfo['zip']['central_directory'][0]['flags']['compression_speed'];				}				if (isset($ThisFileInfo['zip']['compression_method']) && ($ThisFileInfo['zip']['compression_method'] == 'store') && !isset($ThisFileInfo['zip']['compression_speed'])) {					$ThisFileInfo['zip']['compression_speed']  = 'store';				}				return true;			}		}		if ($this->getZIPentriesFilepointer($fd, $ThisFileInfo)) {			// central directory couldn't be found and/or parsed			// scan through actual file data entries, recover as much as possible from probable trucated file			if ($ThisFileInfo['zip']['compressed_size'] > ($ThisFileInfo['filesize'] - 46 - 22)) {				$ThisFileInfo['error'][] = 'Warning: Truncated file! - Total compressed file sizes ('.$ThisFileInfo['zip']['compressed_size'].' bytes) is greater than filesize minus Central Directory and End Of Central Directory structures ('.($ThisFileInfo['filesize'] - 46 - 22).' bytes)';			}			$ThisFileInfo['error'][] = 'Cannot find End Of Central Directory - returned list of files in [zip][entries] array may not be complete';			foreach ($ThisFileInfo['zip']['entries'] as $key => $valuearray) {				$ThisFileInfo['zip']['files'][$valuearray['filename']] = $valuearray['uncompressed_size'];			}			return true;		} else {			unset($ThisFileInfo['zip']);			$ThisFileInfo['fileformat'] = '';			$ThisFileInfo['error'][] = 'Cannot find End Of Central Directory (truncated file?)';			return false;		}	}	function getZIPHeaderFilepointerTopDown(&$fd, &$ThisFileInfo) {		$ThisFileInfo['fileformat'] = 'zip';		$ThisFileInfo['zip']['compressed_size']   = 0;		$ThisFileInfo['zip']['uncompressed_size'] = 0;		$ThisFileInfo['zip']['entries_count']     = 0;		rewind($fd);		while ($fileentry = $this->ZIPparseLocalFileHeader($fd)) {			$ThisFileInfo['zip']['entries'][] = $fileentry;			$ThisFileInfo['zip']['entries_count']++;		}		if ($ThisFileInfo['zip']['entries_count'] == 0) {			$ThisFileInfo['error'][] = 'No Local File Header entries found';			return false;		}		$ThisFileInfo['zip']['entries_count']     = 0;		while ($centraldirectoryentry = $this->ZIPparseCentralDirectory($fd)) {			$ThisFileInfo['zip']['central_directory'][] = $centraldirectoryentry;			$ThisFileInfo['zip']['entries_count']++;			$ThisFileInfo['zip']['compressed_size']   += $centraldirectoryentry['compressed_size'];			$ThisFileInfo['zip']['uncompressed_size'] += $centraldirectoryentry['uncompressed_size'];		}		if ($ThisFileInfo['zip']['entries_count'] == 0) {			$ThisFileInfo['error'][] = 'No Central Directory entries found (truncated file?)';			return false;		}		if ($EOCD = $this->ZIPparseEndOfCentralDirectory($fd)) {			$ThisFileInfo['zip']['end_central_directory'] = $EOCD;		} else {			$ThisFileInfo['error'][] = 'No End Of Central Directory entry found (truncated file?)';			return false;		}		if (!empty($ThisFileInfo['zip']['end_central_directory']['comment'])) {			$ThisFileInfo['zip']['comments']['comment'][] = $ThisFileInfo['zip']['end_central_directory']['comment'];		}		return true;	}	function getZIPentriesFilepointer(&$fd, &$ThisFileInfo) {		$ThisFileInfo['zip']['compressed_size']   = 0;		$ThisFileInfo['zip']['uncompressed_size'] = 0;		$ThisFileInfo['zip']['entries_count']     = 0;		rewind($fd);		while ($fileentry = $this->ZIPparseLocalFileHeader($fd)) {			$ThisFileInfo['zip']['entries'][] = $fileentry;			$ThisFileInfo['zip']['entries_count']++;			$ThisFileInfo['zip']['compressed_size']   += $fileentry['compressed_size'];			$ThisFileInfo['zip']['uncompressed_size'] += $fileentry['uncompressed_size'];		}		if ($ThisFileInfo['zip']['entries_count'] == 0) {			$ThisFileInfo['error'][] = 'No Local File Header entries found';			return false;		}		return true;	}	function ZIPparseLocalFileHeader(&$fd) {		$LocalFileHeader['offset'] = ftell($fd);		$ZIPlocalFileHeader = fread($fd, 30);		$LocalFileHeader['raw']['signature']          = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader,  0, 4));		if ($LocalFileHeader['raw']['signature'] != 0x04034B50) {			// invalid Local File Header Signature			fseek($fd, $LocalFileHeader['offset'], SEEK_SET); // seek back to where filepointer originally was so it can be handled properly			return false;		}		$LocalFileHeader['raw']['extract_version']    = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader,  4, 2));		$LocalFileHeader['raw']['general_flags']      = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader,  6, 2));		$LocalFileHeader['raw']['compression_method'] = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader,  8, 2));		$LocalFileHeader['raw']['last_mod_file_time'] = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader, 10, 2));		$LocalFileHeader['raw']['last_mod_file_date'] = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader, 12, 2));		$LocalFileHeader['raw']['crc_32']             = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader, 14, 4));		$LocalFileHeader['raw']['compressed_size']    = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader, 18, 4));		$LocalFileHeader['raw']['uncompressed_size']  = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader, 22, 4));		$LocalFileHeader['raw']['filename_length']    = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader, 26, 2));		$LocalFileHeader['raw']['extra_field_length'] = getid3_lib::LittleEndian2Int(substr($ZIPlocalFileHeader, 28, 2));		$LocalFileHeader['extract_version']           = sprintf('%1.1f', $LocalFileHeader['raw']['extract_version'] / 10);		$LocalFileHeader['host_os']                   = $this->ZIPversionOSLookup(($LocalFileHeader['raw']['extract_version'] & 0xFF00) >> 8);		$LocalFileHeader['compression_method']        = $this->ZIPcompressionMethodLookup($LocalFileHeader['raw']['compression_method']);		$LocalFileHeader['compressed_size']           = $LocalFileHeader['raw']['compressed_size'];		$LocalFileHeader['uncompressed_size']         = $LocalFileHeader['raw']['uncompressed_size'];		$LocalFileHeader['flags']                     = $this->ZIPparseGeneralPurposeFlags($LocalFileHeader['raw']['general_flags'], $LocalFileHeader['raw']['compression_method']);		$LocalFileHeader['last_modified_timestamp']   = $this->DOStime2UNIXtime($LocalFileHeader['raw']['last_mod_file_date'], $LocalFileHeader['raw']['last_mod_file_time']);		$FilenameExtrafieldLength = $LocalFileHeader['raw']['filename_length'] + $LocalFileHeader['raw']['extra_field_length'];		if ($FilenameExtrafieldLength > 0) {			$ZIPlocalFileHeader .= fread($fd, $FilenameExtrafieldLength);			if ($LocalFileHeader['raw']['filename_length'] > 0) {				$LocalFileHeader['filename']                    = substr($ZIPlocalFileHeader, 30, $LocalFileHeader['raw']['filename_length']);			}			if ($LocalFileHeader['raw']['extra_field_length'] > 0) {