+<?php

+/**

+*

+* @package phpBB3

+* @version $Id$

+* @copyright (c) 2005 phpBB Group

+* @license http://opensource.org/licenses/gpl-license.php GNU Public License

+*

+*/

+

+/**

+* @ignore

+*/

+if (!defined('IN_PHPBB'))

+{

+ exit;

+}

+

+/**

+* Class for handling archives (compression/decompression)

+* @package phpBB3

+*/

+class compress

+{

+ var $fp = 0;

+

+ /**

+ * 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"), false, stat("$phpbb_root_path$src"));

+ }

+ 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 = array();

+ $filelist = filelist("$phpbb_root_path$src", '', '*');

+ krsort($filelist);

+

+ if ($src_path)

+ {

+ $this->data($src_path, '', true, stat("$phpbb_root_path$src"));

+ }

+

+ foreach ($filelist as $path => $file_ary)

+ {

+ 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"), false, stat("$phpbb_root_path$src$path$file"));

+ }

+ }

+ }

+

+ return true;

+ }

+

+ /**

+ * Add custom file (the filepath will not be adjusted)

+ */

+ function add_custom_file($src, $filename)

+ {

+ $this->data($filename, file_get_contents($src), false, stat($src));

+ 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, false, $stat);

+ return true;

+ }

+

+ /**

+ * Return available methods

+ */

+ 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 Group, 2003

+*

+* Based on work by Eric Mueller and Denis125

+* Official ZIP file format: http://www.pkware.com/appnote.txt

+*

+* @package phpBB3

+*/

+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;

+

+ /**

+ * Constructor

+ */

+ function compress_zip($mode, $file)

+ {

+ $this->fp = @fopen($file, $mode . 'b');

+

+ 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");

+ }

+ phpbb_chmod($str, CHMOD_READ | CHMOD_WRITE);

+ }

+ }

+ }

+ // This is a directory, we are not writting files

+ continue;

+ }

+ 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");

+ }

+ phpbb_chmod($str, CHMOD_READ | CHMOD_WRITE);

+ }

+ }

+ }

+

+ 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 (sizeof($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, $is_dir = false, $stat)

+ {

+ $name = str_replace('\\', '/', $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', sizeof($this->ctrl_dir)) . // total # of entries "on this disk"

+ pack('v', sizeof($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('Pragma: 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

+*

+* @package phpBB3

+*/

+class compress_tar extends compress

+{

+ var $isgz = false;

+ var $isbz = false;

+ var $filename = '';

+ var $mode = '';

+ var $type = '';

+ var $wrote = false;

+

+ /**

+ * Constructor

+ */

+ function compress_tar($mode, $file, $type = '')

+ {

+ $type = (!$type) ? $file : $type;

+ $this->isgz = (strpos($type, '.tar.gz') !== false || strpos($type, '.tgz') !== false) ? true : false;

+ $this->isbz = (strpos($type, '.tar.bz2') !== false) ? true : false;

+

+ $this->mode = &$mode;

+ $this->file = &$file;

+ $this->type = &$type;

+ $this->open();

+ }

+

+ /**

+ * 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");

+ }

+ phpbb_chmod($str, CHMOD_READ | CHMOD_WRITE);

+ }

+ }

+ }

+ }

+ 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");

+ }

+ phpbb_chmod($str, CHMOD_READ | CHMOD_WRITE);

+ }

+ }

+

+ // Write out the files

+ if (!($fp = fopen($target_filename, 'wb')))

+ {

+ trigger_error("Couldn't create file $filename");

+ }

+ phpbb_chmod($target_filename, CHMOD_READ);

+

+ // 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, $is_dir = false, $stat)

+ {

+ $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('Pragma: 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);

+ }

+ }

+}

+

+?> \ No newline at end of file