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| <?php | |
| /** | |
| * | |
| * This file is part of the phpBB Forum Software package. | |
| * | |
| * @copyright (c) phpBB Limited <https://www.phpbb.com> | |
| * @license GNU General Public License, version 2 (GPL-2.0) | |
| * | |
| * For full copyright and license information, please see | |
| * the docs/CREDITS.txt file. | |
| * | |
| */ | |
| /** | |
| * @ignore | |
| */ | |
| if (!defined('IN_PHPBB')) | |
| { | |
| exit; | |
| } | |
| /** | |
| * Class for handling archives (compression/decompression) | |
| */ | |
| class compress | |
| { | |
| var $fp = 0; | |
| /** | |
| * @var array | |
| */ | |
| protected $filelist = array(); | |
| /** | |
| * Add file to archive | |
| */ | |
| function add_file($src, $src_rm_prefix = '', $src_add_prefix = '', $skip_files = '') | |
| { | |
| global $phpbb_root_path; | |
| $skip_files = explode(',', $skip_files); | |
| // Remove rm prefix from src path | |
| $src_path = ($src_rm_prefix) ? preg_replace('#^(' . preg_quote($src_rm_prefix, '#') . ')#', '', $src) : $src; | |
| // Add src prefix | |
| $src_path = ($src_add_prefix) ? ($src_add_prefix . ((substr($src_add_prefix, -1) != '/') ? '/' : '') . $src_path) : $src_path; | |
| // Remove initial "/" if present | |
| $src_path = (substr($src_path, 0, 1) == '/') ? substr($src_path, 1) : $src_path; | |
| if (is_file($phpbb_root_path . $src)) | |
| { | |
| $this->data($src_path, file_get_contents("$phpbb_root_path$src"), stat("$phpbb_root_path$src"), false); | |
| } | |
| else if (is_dir($phpbb_root_path . $src)) | |
| { | |
| // Clean up path, add closing / if not present | |
| $src_path = ($src_path && substr($src_path, -1) != '/') ? $src_path . '/' : $src_path; | |
| $filelist = filelist("$phpbb_root_path$src", '', '*'); | |
| krsort($filelist); | |
| /** | |
| * Commented out, as adding the folders produces corrupted archives | |
| if ($src_path) | |
| { | |
| $this->data($src_path, '', true, stat("$phpbb_root_path$src")); | |
| } | |
| */ | |
| foreach ($filelist as $path => $file_ary) | |
| { | |
| /** | |
| * Commented out, as adding the folders produces corrupted archives | |
| if ($path) | |
| { | |
| // Same as for src_path | |
| $path = (substr($path, 0, 1) == '/') ? substr($path, 1) : $path; | |
| $path = ($path && substr($path, -1) != '/') ? $path . '/' : $path; | |
| $this->data("$src_path$path", '', true, stat("$phpbb_root_path$src$path")); | |
| } | |
| */ | |
| foreach ($file_ary as $file) | |
| { | |
| if (in_array($path . $file, $skip_files)) | |
| { | |
| continue; | |
| } | |
| $this->data("$src_path$path$file", file_get_contents("$phpbb_root_path$src$path$file"), stat("$phpbb_root_path$src$path$file"), false); | |
| } | |
| } | |
| } | |
| else | |
| { | |
| // $src does not exist | |
| return false; | |
| } | |
| return true; | |
| } | |
| /** | |
| * Add custom file (the filepath will not be adjusted) | |
| */ | |
| function add_custom_file($src, $filename) | |
| { | |
| if (!file_exists($src)) | |
| { | |
| return false; | |
| } | |
| $this->data($filename, file_get_contents($src), stat($src), false); | |
| return true; | |
| } | |
| /** | |
| * Add file data | |
| */ | |
| function add_data($src, $name) | |
| { | |
| $stat = array(); | |
| $stat[2] = 436; //384 | |
| $stat[4] = $stat[5] = 0; | |
| $stat[7] = strlen($src); | |
| $stat[9] = time(); | |
| $this->data($name, $src, $stat, false); | |
| return true; | |
| } | |
| /** | |
| * Checks if a file by that name as already been added and, if it has, | |
| * returns a new, unique name. | |
| * | |
| * @param string $name The filename | |
| * @return string A unique filename | |
| */ | |
| protected function unique_filename($name) | |
| { | |
| if (isset($this->filelist[$name])) | |
| { | |
| $start = $name; | |
| $ext = ''; | |
| $this->filelist[$name]++; | |
| // Separate the extension off the end of the filename to preserve it | |
| $pos = strrpos($name, '.'); | |
| if ($pos !== false) | |
| { | |
| $start = substr($name, 0, $pos); | |
| $ext = substr($name, $pos); | |
| } | |
| return $start . '_' . $this->filelist[$name] . $ext; | |
| } | |
| $this->filelist[$name] = 0; | |
| return $name; | |
| } | |
| /** | |
| * Return available methods | |
| * | |
| * @return array Array of strings of available compression methods (.tar, .tar.gz, .zip, etc.) | |
| */ | |
| static public function methods() | |
| { | |
| $methods = array('.tar'); | |
| $available_methods = array('.tar.gz' => 'zlib', '.tar.bz2' => 'bz2', '.zip' => 'zlib'); | |
| foreach ($available_methods as $type => $module) | |
| { | |
| if (!@extension_loaded($module)) | |
| { | |
| continue; | |
| } | |
| $methods[] = $type; | |
| } | |
| return $methods; | |
| } | |
| } | |
| /** | |
| * Zip creation class from phpMyAdmin 2.3.0 (c) Tobias Ratschiller, Olivier Müller, Loïc Chapeaux, | |
| * Marc Delisle, http://www.phpmyadmin.net/ | |
| * | |
| * Zip extraction function by Alexandre Tedeschi, alexandrebr at gmail dot com | |
| * | |
| * Modified extensively by psoTFX and DavidMJ, (c) phpBB Limited, 2003 | |
| * | |
| * Based on work by Eric Mueller and Denis125 | |
| * Official ZIP file format: http://www.pkware.com/appnote.txt | |
| */ | |
| class compress_zip extends compress | |
| { | |
| var $datasec = array(); | |
| var $ctrl_dir = array(); | |
| var $eof_cdh = "\x50\x4b\x05\x06\x00\x00\x00\x00"; | |
| var $old_offset = 0; | |
| var $datasec_len = 0; | |
| /** | |
| * @var \phpbb\filesystem\filesystem_interface | |
| */ | |
| protected $filesystem; | |
| /** | |
| * Constructor | |
| */ | |
| function __construct($mode, $file) | |
| { | |
| global $phpbb_filesystem; | |
| $this->fp = @fopen($file, $mode . 'b'); | |
| $this->filesystem = ($phpbb_filesystem instanceof \phpbb\filesystem\filesystem_interface) ? $phpbb_filesystem : new \phpbb\filesystem\filesystem(); | |
| if (!$this->fp) | |
| { | |
| trigger_error('Unable to open file ' . $file . ' [' . $mode . 'b]'); | |
| } | |
| } | |
| /** | |
| * Convert unix to dos time | |
| */ | |
| function unix_to_dos_time($time) | |
| { | |
| $timearray = (!$time) ? getdate() : getdate($time); | |
| if ($timearray['year'] < 1980) | |
| { | |
| $timearray['year'] = 1980; | |
| $timearray['mon'] = $timearray['mday'] = 1; | |
| $timearray['hours'] = $timearray['minutes'] = $timearray['seconds'] = 0; | |
| } | |
| return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) | ($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1); | |
| } | |
| /** | |
| * Extract archive | |
| */ | |
| function extract($dst) | |
| { | |
| // Loop the file, looking for files and folders | |
| $dd_try = false; | |
| rewind($this->fp); | |
| while (!feof($this->fp)) | |
| { | |
| // Check if the signature is valid... | |
| $signature = fread($this->fp, 4); | |
| switch ($signature) | |
| { | |
| // 'Local File Header' | |
| case "\x50\x4b\x03\x04": | |
| // Lets get everything we need. | |
| // We don't store the version needed to extract, the general purpose bit flag or the date and time fields | |
| $data = unpack("@4/vc_method/@10/Vcrc/Vc_size/Vuc_size/vname_len/vextra_field", fread($this->fp, 26)); | |
| $file_name = fread($this->fp, $data['name_len']); // filename | |
| if ($data['extra_field']) | |
| { | |
| fread($this->fp, $data['extra_field']); // extra field | |
| } | |
| $target_filename = "$dst$file_name"; | |
| if (!$data['uc_size'] && !$data['crc'] && substr($file_name, -1, 1) == '/') | |
| { | |
| if (!is_dir($target_filename)) | |
| { | |
| $str = ''; | |
| $folders = explode('/', $target_filename); | |
| // Create and folders and subfolders if they do not exist | |
| foreach ($folders as $folder) | |
| { | |
| $folder = trim($folder); | |
| if (!$folder) | |
| { | |
| continue; | |
| } | |
| $str = (!empty($str)) ? $str . '/' . $folder : $folder; | |
| if (!is_dir($str)) | |
| { | |
| if (!@mkdir($str, 0777)) | |
| { | |
| trigger_error("Could not create directory $folder"); | |
| } | |
| try | |
| { | |
| $this->filesystem->phpbb_chmod($str, \phpbb\filesystem\filesystem_interface::CHMOD_READ | \phpbb\filesystem\filesystem_interface::CHMOD_WRITE); | |
| } | |
| catch (\phpbb\filesystem\exception\filesystem_exception $e) | |
| { | |
| // Do nothing | |
| } | |
| } | |
| } | |
| } | |
| // This is a directory, we are not writing files | |
| continue 2; | |
| } | |
| else | |
| { | |
| // Some archivers are punks, they don't include folders in their archives! | |
| $str = ''; | |
| $folders = explode('/', pathinfo($target_filename, PATHINFO_DIRNAME)); | |
| // Create and folders and subfolders if they do not exist | |
| foreach ($folders as $folder) | |
| { | |
| $folder = trim($folder); | |
| if (!$folder) | |
| { | |
| continue; | |
| } | |
| $str = (!empty($str)) ? $str . '/' . $folder : $folder; | |
| if (!is_dir($str)) | |
| { | |
| if (!@mkdir($str, 0777)) | |
| { | |
| trigger_error("Could not create directory $folder"); | |
| } | |
| try | |
| { | |
| $this->filesystem->phpbb_chmod($str, \phpbb\filesystem\filesystem_interface::CHMOD_READ | \phpbb\filesystem\filesystem_interface::CHMOD_WRITE); | |
| } | |
| catch (\phpbb\filesystem\exception\filesystem_exception $e) | |
| { | |
| // Do nothing | |
| } | |
| } | |
| } | |
| } | |
| if (!$data['uc_size']) | |
| { | |
| $content = ''; | |
| } | |
| else | |
| { | |
| $content = fread($this->fp, $data['c_size']); | |
| } | |
| $fp = fopen($target_filename, "w"); | |
| switch ($data['c_method']) | |
| { | |
| case 0: | |
| // Not compressed | |
| fwrite($fp, $content); | |
| break; | |
| case 8: | |
| // Deflate | |
| fwrite($fp, gzinflate($content, $data['uc_size'])); | |
| break; | |
| case 12: | |
| // Bzip2 | |
| fwrite($fp, bzdecompress($content)); | |
| break; | |
| } | |
| fclose($fp); | |
| break; | |
| // We hit the 'Central Directory Header', we can stop because nothing else in here requires our attention | |
| // or we hit the end of the central directory record, we can safely end the loop as we are totally finished with looking for files and folders | |
| case "\x50\x4b\x01\x02": | |
| // This case should simply never happen.. but it does exist.. | |
| case "\x50\x4b\x05\x06": | |
| break 2; | |
| // 'Packed to Removable Disk', ignore it and look for the next signature... | |
| case 'PK00': | |
| continue 2; | |
| // We have encountered a header that is weird. Lets look for better data... | |
| default: | |
| if (!$dd_try) | |
| { | |
| // Unexpected header. Trying to detect wrong placed 'Data Descriptor'; | |
| $dd_try = true; | |
| fseek($this->fp, 8, SEEK_CUR); // Jump over 'crc-32'(4) 'compressed-size'(4), 'uncompressed-size'(4) | |
| continue 2; | |
| } | |
| trigger_error("Unexpected header, ending loop"); | |
| break 2; | |
| } | |
| $dd_try = false; | |
| } | |
| } | |
| /** | |
| * Close archive | |
| */ | |
| function close() | |
| { | |
| // Write out central file directory and footer ... if it exists | |
| if (count($this->ctrl_dir)) | |
| { | |
| fwrite($this->fp, $this->file()); | |
| } | |
| fclose($this->fp); | |
| } | |
| /** | |
| * Create the structures ... note we assume version made by is MSDOS | |
| */ | |
| function data($name, $data, $stat, $is_dir = false) | |
| { | |
| $name = str_replace('\\', '/', $name); | |
| $name = $this->unique_filename($name); | |
| $hexdtime = pack('V', $this->unix_to_dos_time($stat[9])); | |
| if ($is_dir) | |
| { | |
| $unc_len = $c_len = $crc = 0; | |
| $zdata = ''; | |
| $var_ext = 10; | |
| } | |
| else | |
| { | |
| $unc_len = strlen($data); | |
| $crc = crc32($data); | |
| $zdata = gzdeflate($data); | |
| $c_len = strlen($zdata); | |
| $var_ext = 20; | |
| // Did we compress? No, then use data as is | |
| if ($c_len >= $unc_len) | |
| { | |
| $zdata = $data; | |
| $c_len = $unc_len; | |
| $var_ext = 10; | |
| } | |
| } | |
| unset($data); | |
| // If we didn't compress set method to store, else deflate | |
| $c_method = ($c_len == $unc_len) ? "\x00\x00" : "\x08\x00"; | |
| // Are we a file or a directory? Set archive for file | |
| $attrib = ($is_dir) ? 16 : 32; | |
| // File Record Header | |
| $fr = "\x50\x4b\x03\x04"; // Local file header 4bytes | |
| $fr .= pack('v', $var_ext); // ver needed to extract 2bytes | |
| $fr .= "\x00\x00"; // gen purpose bit flag 2bytes | |
| $fr .= $c_method; // compression method 2bytes | |
| $fr .= $hexdtime; // last mod time and date 2+2bytes | |
| $fr .= pack('V', $crc); // crc32 4bytes | |
| $fr .= pack('V', $c_len); // compressed filesize 4bytes | |
| $fr .= pack('V', $unc_len); // uncompressed filesize 4bytes | |
| $fr .= pack('v', strlen($name));// length of filename 2bytes | |
| $fr .= pack('v', 0); // extra field length 2bytes | |
| $fr .= $name; | |
| $fr .= $zdata; | |
| unset($zdata); | |
| $this->datasec_len += strlen($fr); | |
| // Add data to file ... by writing data out incrementally we save some memory | |
| fwrite($this->fp, $fr); | |
| unset($fr); | |
| // Central Directory Header | |
| $cdrec = "\x50\x4b\x01\x02"; // header 4bytes | |
| $cdrec .= "\x00\x00"; // version made by | |
| $cdrec .= pack('v', $var_ext); // version needed to extract | |
| $cdrec .= "\x00\x00"; // gen purpose bit flag | |
| $cdrec .= $c_method; // compression method | |
| $cdrec .= $hexdtime; // last mod time & date | |
| $cdrec .= pack('V', $crc); // crc32 | |
| $cdrec .= pack('V', $c_len); // compressed filesize | |
| $cdrec .= pack('V', $unc_len); // uncompressed filesize | |
| $cdrec .= pack('v', strlen($name)); // length of filename | |
| $cdrec .= pack('v', 0); // extra field length | |
| $cdrec .= pack('v', 0); // file comment length | |
| $cdrec .= pack('v', 0); // disk number start | |
| $cdrec .= pack('v', 0); // internal file attributes | |
| $cdrec .= pack('V', $attrib); // external file attributes | |
| $cdrec .= pack('V', $this->old_offset); // relative offset of local header | |
| $cdrec .= $name; | |
| // Save to central directory | |
| $this->ctrl_dir[] = $cdrec; | |
| $this->old_offset = $this->datasec_len; | |
| } | |
| /** | |
| * file | |
| */ | |
| function file() | |
| { | |
| $ctrldir = implode('', $this->ctrl_dir); | |
| return $ctrldir . $this->eof_cdh . | |
| pack('v', count($this->ctrl_dir)) . // total # of entries "on this disk" | |
| pack('v', count($this->ctrl_dir)) . // total # of entries overall | |
| pack('V', strlen($ctrldir)) . // size of central dir | |
| pack('V', $this->datasec_len) . // offset to start of central dir | |
| "\x00\x00"; // .zip file comment length | |
| } | |
| /** | |
| * Download archive | |
| */ | |
| function download($filename, $download_name = false) | |
| { | |
| global $phpbb_root_path; | |
| if ($download_name === false) | |
| { | |
| $download_name = $filename; | |
| } | |
| $mimetype = 'application/zip'; | |
| header('Cache-Control: private, no-cache'); | |
| header("Content-Type: $mimetype; name=\"$download_name.zip\""); | |
| header("Content-disposition: attachment; filename=$download_name.zip"); | |
| $fp = @fopen("{$phpbb_root_path}store/$filename.zip", 'rb'); | |
| if ($fp) | |
| { | |
| while ($buffer = fread($fp, 1024)) | |
| { | |
| echo $buffer; | |
| } | |
| fclose($fp); | |
| } | |
| } | |
| } | |
| /** | |
| * Tar/tar.gz compression routine | |
| * Header/checksum creation derived from tarfile.pl, (c) Tom Horsley, 1994 | |
| */ | |
| class compress_tar extends compress | |
| { | |
| var $isgz = false; | |
| var $isbz = false; | |
| var $filename = ''; | |
| var $mode = ''; | |
| var $type = ''; | |
| var $wrote = false; | |
| /** | |
| * @var \phpbb\filesystem\filesystem_interface | |
| */ | |
| protected $filesystem; | |
| /** | |
| * Constructor | |
| */ | |
| function __construct($mode, $file, $type = '') | |
| { | |
| global $phpbb_filesystem; | |
| $type = (!$type) ? $file : $type; | |
| $this->isgz = preg_match('#(\.tar\.gz|\.tgz)$#', $type); | |
| $this->isbz = preg_match('#\.tar\.bz2$#', $type); | |
| $this->mode = &$mode; | |
| $this->file = &$file; | |
| $this->type = &$type; | |
| $this->open(); | |
| $this->filesystem = ($phpbb_filesystem instanceof \phpbb\filesystem\filesystem_interface) ? $phpbb_filesystem : new \phpbb\filesystem\filesystem(); | |
| } | |
| /** | |
| * Extract archive | |
| */ | |
| function extract($dst) | |
| { | |
| $fzread = ($this->isbz && function_exists('bzread')) ? 'bzread' : (($this->isgz && @extension_loaded('zlib')) ? 'gzread' : 'fread'); | |
| // Run through the file and grab directory entries | |
| while ($buffer = $fzread($this->fp, 512)) | |
| { | |
| $tmp = unpack('A6magic', substr($buffer, 257, 6)); | |
| if (trim($tmp['magic']) == 'ustar') | |
| { | |
| $tmp = unpack('A100name', $buffer); | |
| $filename = trim($tmp['name']); | |
| $tmp = unpack('Atype', substr($buffer, 156, 1)); | |
| $filetype = (int) trim($tmp['type']); | |
| $tmp = unpack('A12size', substr($buffer, 124, 12)); | |
| $filesize = octdec((int) trim($tmp['size'])); | |
| $target_filename = "$dst$filename"; | |
| if ($filetype == 5) | |
| { | |
| if (!is_dir($target_filename)) | |
| { | |
| $str = ''; | |
| $folders = explode('/', $target_filename); | |
| // Create and folders and subfolders if they do not exist | |
| foreach ($folders as $folder) | |
| { | |
| $folder = trim($folder); | |
| if (!$folder) | |
| { | |
| continue; | |
| } | |
| $str = (!empty($str)) ? $str . '/' . $folder : $folder; | |
| if (!is_dir($str)) | |
| { | |
| if (!@mkdir($str, 0777)) | |
| { | |
| trigger_error("Could not create directory $folder"); | |
| } | |
| try | |
| { | |
| $this->filesystem->phpbb_chmod($str, \phpbb\filesystem\filesystem_interface::CHMOD_READ | \phpbb\filesystem\filesystem_interface::CHMOD_WRITE); | |
| } | |
| catch (\phpbb\filesystem\exception\filesystem_exception $e) | |
| { | |
| // Do nothing | |
| } | |
| } | |
| } | |
| } | |
| } | |
| else if ($filesize >= 0 && ($filetype == 0 || $filetype == "\0")) | |
| { | |
| // Some archivers are punks, they don't properly order the folders in their archives! | |
| $str = ''; | |
| $folders = explode('/', pathinfo($target_filename, PATHINFO_DIRNAME)); | |
| // Create and folders and subfolders if they do not exist | |
| foreach ($folders as $folder) | |
| { | |
| $folder = trim($folder); | |
| if (!$folder) | |
| { | |
| continue; | |
| } | |
| $str = (!empty($str)) ? $str . '/' . $folder : $folder; | |
| if (!is_dir($str)) | |
| { | |
| if (!@mkdir($str, 0777)) | |
| { | |
| trigger_error("Could not create directory $folder"); | |
| } | |
| try | |
| { | |
| $this->filesystem->phpbb_chmod($str, \phpbb\filesystem\filesystem_interface::CHMOD_READ | \phpbb\filesystem\filesystem_interface::CHMOD_WRITE); | |
| } | |
| catch (\phpbb\filesystem\exception\filesystem_exception $e) | |
| { | |
| // Do nothing | |
| } | |
| } | |
| } | |
| // Write out the files | |
| if (!($fp = fopen($target_filename, 'wb'))) | |
| { | |
| trigger_error("Couldn't create file $filename"); | |
| } | |
| try | |
| { | |
| $this->filesystem->phpbb_chmod($target_filename, \phpbb\filesystem\filesystem_interface::CHMOD_READ); | |
| } | |
| catch (\phpbb\filesystem\exception\filesystem_exception $e) | |
| { | |
| // Do nothing | |
| } | |
| // Grab the file contents | |
| fwrite($fp, ($filesize) ? $fzread($this->fp, ($filesize + 511) &~ 511) : '', $filesize); | |
| fclose($fp); | |
| } | |
| } | |
| } | |
| } | |
| /** | |
| * Close archive | |
| */ | |
| function close() | |
| { | |
| $fzclose = ($this->isbz && function_exists('bzclose')) ? 'bzclose' : (($this->isgz && @extension_loaded('zlib')) ? 'gzclose' : 'fclose'); | |
| if ($this->wrote) | |
| { | |
| $fzwrite = ($this->isbz && function_exists('bzwrite')) ? 'bzwrite' : (($this->isgz && @extension_loaded('zlib')) ? 'gzwrite' : 'fwrite'); | |
| // The end of a tar archive ends in two records of all NULLs (1024 bytes of \0) | |
| $fzwrite($this->fp, str_repeat("\0", 1024)); | |
| } | |
| $fzclose($this->fp); | |
| } | |
| /** | |
| * Create the structures | |
| */ | |
| function data($name, $data, $stat, $is_dir = false) | |
| { | |
| $name = $this->unique_filename($name); | |
| $this->wrote = true; | |
| $fzwrite = ($this->isbz && function_exists('bzwrite')) ? 'bzwrite' : (($this->isgz && @extension_loaded('zlib')) ? 'gzwrite' : 'fwrite'); | |
| $typeflag = ($is_dir) ? '5' : ''; | |
| // This is the header data, it contains all the info we know about the file or folder that we are about to archive | |
| $header = ''; | |
| $header .= pack('a100', $name); // file name | |
| $header .= pack('a8', sprintf("%07o", $stat[2])); // file mode | |
| $header .= pack('a8', sprintf("%07o", $stat[4])); // owner id | |
| $header .= pack('a8', sprintf("%07o", $stat[5])); // group id | |
| $header .= pack('a12', sprintf("%011o", $stat[7])); // file size | |
| $header .= pack('a12', sprintf("%011o", $stat[9])); // last mod time | |
| // Checksum | |
| $checksum = 0; | |
| for ($i = 0; $i < 148; $i++) | |
| { | |
| $checksum += ord($header[$i]); | |
| } | |
| // We precompute the rest of the hash, this saves us time in the loop and allows us to insert our hash without resorting to string functions | |
| $checksum += 2415 + (($is_dir) ? 53 : 0); | |
| $header .= pack('a8', sprintf("%07o", $checksum)); // checksum | |
| $header .= pack('a1', $typeflag); // link indicator | |
| $header .= pack('a100', ''); // name of linked file | |
| $header .= pack('a6', 'ustar'); // ustar indicator | |
| $header .= pack('a2', '00'); // ustar version | |
| $header .= pack('a32', 'Unknown'); // owner name | |
| $header .= pack('a32', 'Unknown'); // group name | |
| $header .= pack('a8', ''); // device major number | |
| $header .= pack('a8', ''); // device minor number | |
| $header .= pack('a155', ''); // filename prefix | |
| $header .= pack('a12', ''); // end | |
| // This writes the entire file in one shot. Header, followed by data and then null padded to a multiple of 512 | |
| $fzwrite($this->fp, $header . (($stat[7] !== 0 && !$is_dir) ? $data . str_repeat("\0", (($stat[7] + 511) &~ 511) - $stat[7]) : '')); | |
| unset($data); | |
| } | |
| /** | |
| * Open archive | |
| */ | |
| function open() | |
| { | |
| $fzopen = ($this->isbz && function_exists('bzopen')) ? 'bzopen' : (($this->isgz && @extension_loaded('zlib')) ? 'gzopen' : 'fopen'); | |
| $this->fp = @$fzopen($this->file, $this->mode . (($fzopen == 'bzopen') ? '' : 'b') . (($fzopen == 'gzopen') ? '9' : '')); | |
| if (!$this->fp) | |
| { | |
| trigger_error('Unable to open file ' . $this->file . ' [' . $fzopen . ' - ' . $this->mode . 'b]'); | |
| } | |
| } | |
| /** | |
| * Download archive | |
| */ | |
| function download($filename, $download_name = false) | |
| { | |
| global $phpbb_root_path; | |
| if ($download_name === false) | |
| { | |
| $download_name = $filename; | |
| } | |
| switch ($this->type) | |
| { | |
| case '.tar': | |
| $mimetype = 'application/x-tar'; | |
| break; | |
| case '.tar.gz': | |
| $mimetype = 'application/x-gzip'; | |
| break; | |
| case '.tar.bz2': | |
| $mimetype = 'application/x-bzip2'; | |
| break; | |
| default: | |
| $mimetype = 'application/octet-stream'; | |
| break; | |
| } | |
| header('Cache-Control: private, no-cache'); | |
| header("Content-Type: $mimetype; name=\"$download_name$this->type\""); | |
| header("Content-disposition: attachment; filename=$download_name$this->type"); | |
| $fp = @fopen("{$phpbb_root_path}store/$filename$this->type", 'rb'); | |
| if ($fp) | |
| { | |
| while ($buffer = fread($fp, 1024)) | |
| { | |
| echo $buffer; | |
| } | |
| fclose($fp); | |
| } | |
| } | |
| } |