Public Member Functions

getid3_zip Class Reference

getID3() by James Heinrich <info@getid3.org> // More...

Public Member Functions

 getid3_zip (&$fd, &$ThisFileInfo)
 getZIPHeaderFilepointerTopDown (&$fd, &$ThisFileInfo)
 getZIPentriesFilepointer (&$fd, &$ThisFileInfo)
 ZIPparseLocalFileHeader (&$fd)
 ZIPparseCentralDirectory (&$fd)
 ZIPparseEndOfCentralDirectory (&$fd)
 ZIPparseGeneralPurposeFlags ($flagbytes, $compressionmethod)
 ZIPversionOSLookup ($index)
 ZIPcompressionMethodLookup ($index)
 DOStime2UNIXtime ($DOSdate, $DOStime)

Detailed Description

getID3() by James Heinrich <info@getid3.org> //

Definition at line 17 of file module.archive.zip.php.


Member Function Documentation

getid3_zip::DOStime2UNIXtime ( DOSdate,
DOStime 
)

Definition at line 386 of file module.archive.zip.php.

Referenced by ZIPparseCentralDirectory(), and ZIPparseLocalFileHeader().

                                                      {
                // wFatDate
                // Specifies the MS-DOS date. The date is a packed 16-bit value with the following format:
                // Bits      Contents
                // 0-4    Day of the month (1-31)
                // 5-8    Month (1 = January, 2 = February, and so on)
                // 9-15   Year offset from 1980 (add 1980 to get actual year)

                $UNIXday    =  ($DOSdate & 0x001F);
                $UNIXmonth  = (($DOSdate & 0x01E0) >> 5);
                $UNIXyear   = (($DOSdate & 0xFE00) >> 9) + 1980;

                // wFatTime
                // Specifies the MS-DOS time. The time is a packed 16-bit value with the following format:
                // Bits   Contents
                // 0-4    Second divided by 2
                // 5-10   Minute (0-59)
                // 11-15  Hour (0-23 on a 24-hour clock)

                $UNIXsecond =  ($DOStime & 0x001F) * 2;
                $UNIXminute = (($DOStime & 0x07E0) >> 5);
                $UNIXhour   = (($DOStime & 0xF800) >> 11);

                return gmmktime($UNIXhour, $UNIXminute, $UNIXsecond, $UNIXmonth, $UNIXday, $UNIXyear);
        }

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getid3_zip::getid3_zip ( &$  fd,
&$  ThisFileInfo 
)

Definition at line 20 of file module.archive.zip.php.

References getid3_lib::array_merge_clobber(), getid3_lib::CreateDeepArray(), getZIPentriesFilepointer(), ZIPparseCentralDirectory(), and ZIPparseEndOfCentralDirectory().

                                                  {

                $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;

                }
        }

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getid3_zip::getZIPentriesFilepointer ( &$  fd,
&$  ThisFileInfo 
)

Definition at line 149 of file module.archive.zip.php.

References ZIPparseLocalFileHeader().

Referenced by getid3_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']++;
                        $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;
        }

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getid3_zip::getZIPHeaderFilepointerTopDown ( &$  fd,
&$  ThisFileInfo 
)

Definition at line 105 of file module.archive.zip.php.

References ZIPparseCentralDirectory(), ZIPparseEndOfCentralDirectory(), and ZIPparseLocalFileHeader().

                                                                      {
                $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;
        }

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getid3_zip::ZIPcompressionMethodLookup ( index  ) 

Definition at line 368 of file module.archive.zip.php.

Referenced by ZIPparseCentralDirectory(), and ZIPparseLocalFileHeader().

                                                    {
                static $ZIPcompressionMethodLookup = array(
                        0  => 'store',
                        1  => 'shrink',
                        2  => 'reduce-1',
                        3  => 'reduce-2',
                        4  => 'reduce-3',
                        5  => 'reduce-4',
                        6  => 'implode',
                        7  => 'tokenize',
                        8  => 'deflate',
                        9  => 'deflate64',
                        10 => 'PKWARE Date Compression Library Imploding'
                );

                return (isset($ZIPcompressionMethodLookup[$index]) ? $ZIPcompressionMethodLookup[$index] : '[unknown]');
        }

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getid3_zip::ZIPparseCentralDirectory ( &$  fd  ) 

Definition at line 227 of file module.archive.zip.php.

References DOStime2UNIXtime(), getid3_lib::LittleEndian2Int(), ZIPcompressionMethodLookup(), ZIPparseGeneralPurposeFlags(), and ZIPversionOSLookup().

Referenced by getid3_zip(), and getZIPHeaderFilepointerTopDown().

                                                {
                $CentralDirectory['offset'] = ftell($fd);

                $ZIPcentralDirectory = fread($fd, 46);

                $CentralDirectory['raw']['signature']            = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory,  0, 4));
                if ($CentralDirectory['raw']['signature'] != 0x02014B50) {
                        // invalid Central Directory Signature
                        fseek($fd, $CentralDirectory['offset'], SEEK_SET); // seek back to where filepointer originally was so it can be handled properly
                        return false;
                }
                $CentralDirectory['raw']['create_version']       = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory,  4, 2));
                $CentralDirectory['raw']['extract_version']      = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory,  6, 2));
                $CentralDirectory['raw']['general_flags']        = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory,  8, 2));
                $CentralDirectory['raw']['compression_method']   = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 10, 2));
                $CentralDirectory['raw']['last_mod_file_time']   = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 12, 2));
                $CentralDirectory['raw']['last_mod_file_date']   = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 14, 2));
                $CentralDirectory['raw']['crc_32']               = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 16, 4));
                $CentralDirectory['raw']['compressed_size']      = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 20, 4));
                $CentralDirectory['raw']['uncompressed_size']    = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 24, 4));
                $CentralDirectory['raw']['filename_length']      = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 28, 2));
                $CentralDirectory['raw']['extra_field_length']   = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 30, 2));
                $CentralDirectory['raw']['file_comment_length']  = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 32, 2));
                $CentralDirectory['raw']['disk_number_start']    = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 34, 2));
                $CentralDirectory['raw']['internal_file_attrib'] = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 36, 2));
                $CentralDirectory['raw']['external_file_attrib'] = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 38, 4));
                $CentralDirectory['raw']['local_header_offset']  = getid3_lib::LittleEndian2Int(substr($ZIPcentralDirectory, 42, 4));

                $CentralDirectory['entry_offset']              = $CentralDirectory['raw']['local_header_offset'];
                $CentralDirectory['create_version']            = sprintf('%1.1f', $CentralDirectory['raw']['create_version'] / 10);
                $CentralDirectory['extract_version']           = sprintf('%1.1f', $CentralDirectory['raw']['extract_version'] / 10);
                $CentralDirectory['host_os']                   = $this->ZIPversionOSLookup(($CentralDirectory['raw']['extract_version'] & 0xFF00) >> 8);
                $CentralDirectory['compression_method']        = $this->ZIPcompressionMethodLookup($CentralDirectory['raw']['compression_method']);
                $CentralDirectory['compressed_size']           = $CentralDirectory['raw']['compressed_size'];
                $CentralDirectory['uncompressed_size']         = $CentralDirectory['raw']['uncompressed_size'];
                $CentralDirectory['flags']                     = $this->ZIPparseGeneralPurposeFlags($CentralDirectory['raw']['general_flags'], $CentralDirectory['raw']['compression_method']);
                $CentralDirectory['last_modified_timestamp']   = $this->DOStime2UNIXtime($CentralDirectory['raw']['last_mod_file_date'], $CentralDirectory['raw']['last_mod_file_time']);

                $FilenameExtrafieldCommentLength = $CentralDirectory['raw']['filename_length'] + $CentralDirectory['raw']['extra_field_length'] + $CentralDirectory['raw']['file_comment_length'];
                if ($FilenameExtrafieldCommentLength > 0) {
                        $FilenameExtrafieldComment = fread($fd, $FilenameExtrafieldCommentLength);

                        if ($CentralDirectory['raw']['filename_length'] > 0) {
                                $CentralDirectory['filename']                  = substr($FilenameExtrafieldComment, 0, $CentralDirectory['raw']['filename_length']);
                        }
                        if ($CentralDirectory['raw']['extra_field_length'] > 0) {
                                $CentralDirectory['raw']['extra_field_data']   = substr($FilenameExtrafieldComment, $CentralDirectory['raw']['filename_length'], $CentralDirectory['raw']['extra_field_length']);
                        }
                        if ($CentralDirectory['raw']['file_comment_length'] > 0) {
                                $CentralDirectory['file_comment']              = substr($FilenameExtrafieldComment, $CentralDirectory['raw']['filename_length'] + $CentralDirectory['raw']['extra_field_length'], $CentralDirectory['raw']['file_comment_length']);
                        }
                }

                return $CentralDirectory;
        }

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getid3_zip::ZIPparseEndOfCentralDirectory ( &$  fd  ) 

Definition at line 283 of file module.archive.zip.php.

References getid3_lib::LittleEndian2Int().

Referenced by getid3_zip(), and getZIPHeaderFilepointerTopDown().

                                                     {
                $EndOfCentralDirectory['offset'] = ftell($fd);

                $ZIPendOfCentralDirectory = fread($fd, 22);

                $EndOfCentralDirectory['signature']                   = getid3_lib::LittleEndian2Int(substr($ZIPendOfCentralDirectory,  0, 4));
                if ($EndOfCentralDirectory['signature'] != 0x06054B50) {
                        // invalid End Of Central Directory Signature
                        fseek($fd, $EndOfCentralDirectory['offset'], SEEK_SET); // seek back to where filepointer originally was so it can be handled properly
                        return false;
                }
                $EndOfCentralDirectory['disk_number_current']         = getid3_lib::LittleEndian2Int(substr($ZIPendOfCentralDirectory,  4, 2));
                $EndOfCentralDirectory['disk_number_start_directory'] = getid3_lib::LittleEndian2Int(substr($ZIPendOfCentralDirectory,  6, 2));
                $EndOfCentralDirectory['directory_entries_this_disk'] = getid3_lib::LittleEndian2Int(substr($ZIPendOfCentralDirectory,  8, 2));
                $EndOfCentralDirectory['directory_entries_total']     = getid3_lib::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 10, 2));
                $EndOfCentralDirectory['directory_size']              = getid3_lib::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 12, 4));
                $EndOfCentralDirectory['directory_offset']            = getid3_lib::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 16, 4));
                $EndOfCentralDirectory['comment_length']              = getid3_lib::LittleEndian2Int(substr($ZIPendOfCentralDirectory, 20, 2));

                if ($EndOfCentralDirectory['comment_length'] > 0) {
                        $EndOfCentralDirectory['comment']                 = fread($fd, $EndOfCentralDirectory['comment_length']);
                }

                return $EndOfCentralDirectory;
        }

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getid3_zip::ZIPparseGeneralPurposeFlags ( flagbytes,
compressionmethod 
)

Definition at line 310 of file module.archive.zip.php.

Referenced by ZIPparseCentralDirectory(), and ZIPparseLocalFileHeader().

                                                                             {
                $ParsedFlags['encrypted'] = (bool) ($flagbytes & 0x0001);

                switch ($compressionmethod) {
                        case 6:
                                $ParsedFlags['dictionary_size']    = (($flagbytes & 0x0002) ? 8192 : 4096);
                                $ParsedFlags['shannon_fano_trees'] = (($flagbytes & 0x0004) ? 3    : 2);
                                break;

                        case 8:
                        case 9:
                                switch (($flagbytes & 0x0006) >> 1) {
                                        case 0:
                                                $ParsedFlags['compression_speed'] = 'normal';
                                                break;
                                        case 1:
                                                $ParsedFlags['compression_speed'] = 'maximum';
                                                break;
                                        case 2:
                                                $ParsedFlags['compression_speed'] = 'fast';
                                                break;
                                        case 3:
                                                $ParsedFlags['compression_speed'] = 'superfast';
                                                break;
                                }
                                break;
                }
                $ParsedFlags['data_descriptor_used']       = (bool) ($flagbytes & 0x0008);

                return $ParsedFlags;
        }

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getid3_zip::ZIPparseLocalFileHeader ( &$  fd  ) 

Definition at line 170 of file module.archive.zip.php.

References DOStime2UNIXtime(), getid3_lib::LittleEndian2Int(), ZIPcompressionMethodLookup(), ZIPparseGeneralPurposeFlags(), and ZIPversionOSLookup().

Referenced by getZIPentriesFilepointer(), and getZIPHeaderFilepointerTopDown().

                                               {
                $LocalFileHeader['offset'] = ftell($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) {
                                $LocalFileHeader['raw']['extra_field_data'] = substr($ZIPlocalFileHeader, 30 + $LocalFileHeader['raw']['filename_length'], $LocalFileHeader['raw']['extra_field_length']);
                        }
                }

                $LocalFileHeader['data_offset'] = ftell($fd);
                //$LocalFileHeader['compressed_data'] = fread($fd, $LocalFileHeader['raw']['compressed_size']);
                fseek($fd, $LocalFileHeader['raw']['compressed_size'], SEEK_CUR);

                if ($LocalFileHeader['flags']['data_descriptor_used']) {
                        $DataDescriptor = fread($fd, 12);
                        $LocalFileHeader['data_descriptor']['crc_32']            = getid3_lib::LittleEndian2Int(substr($DataDescriptor,  0, 4));
                        $LocalFileHeader['data_descriptor']['compressed_size']   = getid3_lib::LittleEndian2Int(substr($DataDescriptor,  4, 4));
                        $LocalFileHeader['data_descriptor']['uncompressed_size'] = getid3_lib::LittleEndian2Int(substr($DataDescriptor,  8, 4));
                }

                return $LocalFileHeader;
        }

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getid3_zip::ZIPversionOSLookup ( index  ) 

Definition at line 343 of file module.archive.zip.php.

Referenced by ZIPparseCentralDirectory(), and ZIPparseLocalFileHeader().

                                            {
                static $ZIPversionOSLookup = array(
                        0  => 'MS-DOS and OS/2 (FAT / VFAT / FAT32 file systems)',
                        1  => 'Amiga',
                        2  => 'OpenVMS',
                        3  => 'Unix',
                        4  => 'VM/CMS',
                        5  => 'Atari ST',
                        6  => 'OS/2 H.P.F.S.',
                        7  => 'Macintosh',
                        8  => 'Z-System',
                        9  => 'CP/M',
                        10 => 'Windows NTFS',
                        11 => 'MVS',
                        12 => 'VSE',
                        13 => 'Acorn Risc',
                        14 => 'VFAT',
                        15 => 'Alternate MVS',
                        16 => 'BeOS',
                        17 => 'Tandem'
                );

                return (isset($ZIPversionOSLookup[$index]) ? $ZIPversionOSLookup[$index] : '[unknown]');
        }

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The documentation for this class was generated from the following file: