mirror of
https://github.com/phpbb/phpbb.git
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1bf18e23ed
- minor adjustments to cope with PHP5.x git-svn-id: file:///svn/phpbb/trunk@5315 89ea8834-ac86-4346-8a33-228a782c2dd0
635 lines
16 KiB
PHP
635 lines
16 KiB
PHP
<?php
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/**
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*
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* @package phpBB3
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* @version $Id$
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* @copyright (c) 2005 phpBB Group
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* @license http://opensource.org/licenses/gpl-license.php GNU Public License
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*
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*/
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/**
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* @package phpBB3
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* Class for handling archives (compression/decompression)
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*/
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class compress
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{
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var $fp = 0;
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function add_file($src, $src_rm_prefix = '', $src_add_prefix = '', $skip_files = '')
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{
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global $phpbb_root_path;
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$skip_files = explode(',', $skip_files);
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// Remove rm prefix from src path
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$src_path = ($src_rm_prefix) ? preg_replace('#^(' . preg_quote($src_rm_prefix) . ')#', '', $src) : $src;
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// Add src prefix
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$src_path = ($src_add_prefix) ? ($src_add_prefix . ((substr($src_add_prefix, -1) != '/') ? '/' : '') . $src_path) : $src_path;
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// Remove initial "/" if present
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$src_path = (substr($src_path, 0, 1) == '/') ? substr($src_path, 1) : $src_path;
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if (is_file($phpbb_root_path . $src))
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{
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if (!($fp = @fopen("$phpbb_root_path$src", 'rb')))
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{
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return false;
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}
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$data = fread($fp, filesize("$phpbb_root_path$src"));
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fclose($fp);
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$this->data($src_path, $data, filemtime("$phpbb_root_path$src"), false);
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}
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else if (is_dir($phpbb_root_path . $src))
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{
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// Clean up path, add closing / if not present
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$src_path = ($src_path && substr($src_path, -1) != '/') ? $src_path . '/' : $src_path;
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$filelist = array();
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$filelist = filelist("$phpbb_root_path$src", '', '*');
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krsort($filelist);
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if ($src_path)
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{
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$mtime = (file_exists("$phpbb_root_path$src_path")) ? filemtime("$phpbb_root_path$src_path") : time();
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$this->data($src_path, '', $mtime, true);
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}
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foreach ($filelist as $path => $file_ary)
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{
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if ($path)
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{
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// Same as for src_path
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$path = (substr($path, 0, 1) == '/') ? substr($path, 1) : $path;
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$path = ($path && substr($path, -1) != '/') ? $path . '/' : $path;
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$this->data("$src_path$path", '', filemtime("$phpbb_root_path$src_path$path"), true);
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}
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foreach ($file_ary as $file)
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{
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if (in_array($path . $file, $skip_files))
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{
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continue;
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}
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$this->data("$src_path$path$file", implode('', file("$phpbb_root_path$src_path$path$file")), filemtime("$phpbb_root_path$src_path$path$file"), false);
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}
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}
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}
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return true;
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}
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function add_custom_file($src, $filename)
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{
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$this->data($filename, implode('', file($src)));
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return true;
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}
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function add_data($src, $name)
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{
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$this->data($name, $src);
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return true;
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}
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function methods()
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{
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$methods = array('tar');
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$available_methods = array('tar.gz' => 'zlib', 'tar.bz2' => 'bz2', 'zip' => 'zlib');
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foreach ($available_methods as $type => $module)
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{
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if (!@extension_loaded($module))
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{
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continue;
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}
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$methods[] = $type;
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}
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return $methods;
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}
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}
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/**
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* @package phpBB3
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*
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* Zip creation class from phpMyAdmin 2.3.0 <20> Tobias Ratschiller, Olivier M<>ller, Lo<4C>c Chapeaux,
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* Marc Delisle, http://www.phpmyadmin.net/
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*
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* Modified extensively by psoTFX, <20> phpBB Group, 2003
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*
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* Based on work by Eric Mueller and Denis125
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* Official ZIP file format: http://www.pkware.com/appnote.txt
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*/
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class compress_zip extends compress
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{
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var $datasec = array();
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var $ctrl_dir = array();
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var $eof_cdh = "\x50\x4b\x05\x06\x00\x00\x00\x00";
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var $old_offset = 0;
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var $datasec_len = 0;
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function compress_zip($mode, $file)
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{
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return $this->fp = @fopen($file, $mode . 'b');
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}
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function unix_to_dos_time($time)
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{
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$timearray = (!$time) ? getdate() : getdate($time);
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if ($timearray['year'] < 1980)
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{
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$timearray['year'] = 1980;
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$timearray['mon'] = $timearray['mday'] = 1;
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$timearray['hours'] = $timearray['minutes'] = $timearray['seconds'] = 0;
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}
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return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) | ($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1);
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}
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function extract($dst)
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{
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$header = $data = '';
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$seek_ary = $mkdir_ary = array();
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$j = 0;
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fseek($this->fp, -14, SEEK_END);
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$tmp = unpack("ventries/vtotentries/Vctsize/Vctpos", fread($this->fp, 12));
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$entries = (int) trim($tmp['entries']);
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$totentries = (int) trim($tmp['totentries']);
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$ctsize = (int) trim($tmp['ctsize']);
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$ctpos = (int) trim($tmp['ctpos']);
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fseek($this->fp, $ctpos);
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// First scan entries, pull out position of data, length, etc.
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// and directory structure
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for ($i = 0; $i < $entries; $i++)
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{
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$buffer = fread($this->fp, 46);
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$tmp = unpack("vc_method/Vmtime/Vcrc/Vc_size/Vuc_size/vstrlen", substr($buffer, 10, 20));
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$c_method = (int) trim($tmp['c_method']);
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$crc = (int) trim($tmp['crc']);
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$strlen = (int) trim($tmp['strlen']);
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$uc_size = (int) trim($tmp['uc_size']);
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$c_size = (int) trim($tmp['c_size']);
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$tmp = unpack("Vattrib/Voffset", substr($buffer, 38, 8));
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$attrib = (int) trim($tmp['attrib']);
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$offset = (int) trim($tmp['offset']);
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$filename = fread($this->fp, $strlen);
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if ($attrib == 16 || $attrib == 0x41FF0010 || (!$uc_size && !$crc))
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{
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$mkdir_ary[] = "$dst$filename";
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}
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else
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{
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$seek_ary[$j]['c_method'] = $c_method;
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$seek_ary[$j]['crc'] = $crc;
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$seek_ary[$j]['strlen'] = $strlen;
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$seek_ary[$j]['uc_size'] = $uc_size;
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$seek_ary[$j]['c_size'] = $c_size;
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$seek_ary[$j]['offset'] = $offset;
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$seek_ary[$j]['filename'] = "$dst$filename";
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$j++;
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}
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}
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// Create directory structure on fs
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if (is_array($mkdir_ary))
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{
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sort($mkdir_ary);
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foreach ($mkdir_ary as $dir)
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{
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if (!@mkdir($dir, 0777))
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{
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trigger_error("Could not create directory $dir");
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}
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@chmod("$dir", 0777);
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}
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}
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// Extract files
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foreach ($seek_ary as $seek)
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{
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$filename = $seek['filename'];
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// fseek($this->fp, $seek['offset'] + 8); // To grab file header info
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// fseek($this->fp, $seek['offset'] + 30 + $tmp['strlen'] + $tmp['c_size']); // To grab file header info2
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// Jump to data
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fseek($this->fp, $seek['offset'] + 30 + $seek['strlen']);
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// Was data compressed? If so we have to fudge a solution thanks
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// to some "issues" with gzuncompress. Else we just write out the
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// data
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if ($seek['c_method'] == 8)
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{
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// Temp gzip file -> .gz header -> data -> gz footer
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if (!($fp = fopen($filename . '.gz', 'wb')))
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{
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trigger_error("Could not open temporary $filename.gz");
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}
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fwrite($fp, pack('va1a1Va1a1', 0x8b1f, chr(0x08), chr(0x00), time(), chr(0x00), chr(3)));
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fwrite($fp, fread($this->fp, $seek['c_size']));
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fwrite($fp, pack("VV", $seek['crc'], $seek['uc_size']));
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fclose($fp);
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if (!($fp = fopen($filename, 'wb')))
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{
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trigger_error("Could not create $filename");
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}
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@chmod($filename, 0777);
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if (!($gzfp = gzopen($filename . '.gz', 'rb')))
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{
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die("Could not open temporary $filename.gz");
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}
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while ($buffer = gzread($gzfp, 1024))
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{
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fwrite($fp, $buffer);
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}
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gzclose($gzfp);
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fclose($fp);
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unlink($filename . '.gz');
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}
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else
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{
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if (!($fp = fopen($filename, 'wb')))
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{
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trigger_error("Could not create $filename");
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}
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@chmod($filename, 0777);
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fwrite($fp, fread($this->fp, $seek['uc_size']));
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fclose($fp);
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}
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}
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}
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function close()
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{
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// Write out central file directory and footer ... if it exists
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if (sizeof($this->ctrl_dir))
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{
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fwrite($this->fp, $this->file());
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}
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fclose($this->fp);
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}
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// Create the structures ... note we assume version made by is MSDOS
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function data($name, $data, $mtime = false, $is_dir = false)
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{
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$name = str_replace('\\', '/', $name);
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$dtime = dechex($this->unix_to_dos_time($mtime));
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$hexdtime = '\x' . $dtime[6] . $dtime[7] . '\x' . $dtime[4] . $dtime[5] . '\x' . $dtime[2] . $dtime[3] . '\x' . $dtime[0] . $dtime[1];
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eval('$hexdtime = "' . $hexdtime . '";');
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if ($is_dir)
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{
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$unc_len = $c_len = $crc = 0;
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$zdata = '';
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}
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else
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{
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$unc_len = strlen($data);
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$crc = crc32($data);
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$zdata = gzcompress($data);
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$zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug
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$c_len = strlen($zdata);
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// Did we compress? No, then use data as is
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if ($c_len >= $unc_len)
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{
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$zdata = $data;
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$c_len = $unc_len;
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}
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}
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unset($data);
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// If we didn't compress set method to store, else deflate
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$c_method = ($c_len == $unc_len) ? "\x00\x00" : "\x08\x00";
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// Are we a file or a directory? Set archive for file
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$attrib = ($is_dir) ? 16 : 32;
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$var_ext = ($is_dir) ? "\x0a" : "\x14";
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// File Record Header
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$fr = "\x50\x4b\x03\x04"; // Local file header 4bytes
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$fr .= "$var_ext\x00"; // ver needed to extract 2bytes
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$fr .= "\x00\x00"; // gen purpose bit flag 2bytes
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$fr .= $c_method; // compression method 2bytes
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$fr .= $hexdtime; // last mod time and date 2+2bytes
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$fr .= pack('V', $crc); // crc32 4bytes
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$fr .= pack('V', $c_len); // compressed filesize 4bytes
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$fr .= pack('V', $unc_len); // uncompressed filesize 4bytes
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$fr .= pack('v', strlen($name));// length of filename 2bytes
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$fr .= pack('v', 0); // extra field length 2bytes
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$fr .= $name;
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$fr .= $zdata;
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unset($zdata);
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$fr .= pack('V', $crc); // crc32 4bytes
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$fr .= pack('V', $c_len); // compressed filesize 4bytes
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$fr .= pack('V', $unc_len); // uncompressed filesize 4bytes
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$this->datasec_len += strlen($fr);
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// Add data to file ... by writing data out incrementally we save some memory
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fwrite($this->fp, $fr);
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unset($fr);
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// Central Directory Header
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$cdrec = "\x50\x4b\x01\x02"; // header 4bytes
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$cdrec .= "\x00\x00"; // version made by
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$cdrec .= "$var_ext\x00"; // version needed to extract
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$cdrec .= "\x00\x00"; // gen purpose bit flag
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$cdrec .= $c_method; // compression method
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$cdrec .= $hexdtime; // last mod time & date
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$cdrec .= pack('V', $crc); // crc32
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$cdrec .= pack('V', $c_len); // compressed filesize
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$cdrec .= pack('V', $unc_len); // uncompressed filesize
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$cdrec .= pack('v', strlen($name)); // length of filename
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$cdrec .= pack('v', 0); // extra field length
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$cdrec .= pack('v', 0); // file comment length
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$cdrec .= pack('v', 0); // disk number start
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$cdrec .= pack('v', 0); // internal file attributes
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$cdrec .= pack('V', $attrib); // external file attributes
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$cdrec .= pack('V', $this->old_offset); // relative offset of local header
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$cdrec .= $name;
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// Save to central directory
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$this->ctrl_dir[] = $cdrec;
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$this->old_offset = $this->datasec_len;
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}
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function file()
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{
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$ctrldir = implode('', $this->ctrl_dir);
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return $ctrldir . $this->eof_cdh .
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pack('v', sizeof($this->ctrl_dir)) . // total # of entries "on this disk"
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pack('v', sizeof($this->ctrl_dir)) . // total # of entries overall
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pack('V', strlen($ctrldir)) . // size of central dir
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pack('V', $this->datasec_len) . // offset to start of central dir
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"\x00\x00"; // .zip file comment length
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}
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function download($filename)
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{
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global $phpbb_root_path;
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$mimetype = 'application/zip';
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header('Pragma: no-cache');
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header("Content-Type: $mimetype; name=\"$filename.zip\"");
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header("Content-disposition: attachment; filename=$filename.zip");
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$fp = fopen("{$phpbb_root_path}store/$filename.zip", 'rb');
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while ($buffer = fread($fp, 1024))
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{
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echo $buffer;
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}
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fclose($fp);
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}
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}
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/**
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* @package phpBB3
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*
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* Tar/tar.gz compression routine
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* Header/checksum creation derived from tarfile.pl, <20> Tom Horsley, 1994
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*/
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class compress_tar extends compress
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{
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var $isgz = false;
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var $isbz = false;
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var $filename = '';
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var $mode = '';
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var $type = '';
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function compress_tar($mode, $file, $type = '')
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{
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$type = (!$type) ? $file : $type;
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$this->isgz = (strpos($type, '.tar.gz') !== false || strpos($type, '.tgz') !== false) ? true : false;
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$this->isbz = (strpos($type, '.tar.bz2') !== false) ? true : false;
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$this->mode = &$mode;
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$this->file = &$file;
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$this->type = &$type;
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$this->open();
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}
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function extract($dst)
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{
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$fzread = ($this->isbz && function_exists('bzread')) ? 'bzread' : (($this->isgz && extension_loaded('zlib')) ? 'gzread' : 'fread');
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// Run through the file and grab directory entries
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while ($buffer = $fzread($this->fp, 512))
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{
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$tmp = unpack("A6magic", substr($buffer, 257, 6));
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if (trim($tmp['magic']) == 'ustar')
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{
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$tmp = unpack("A100name", $buffer);
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$filename = trim($tmp['name']);
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$tmp = unpack("Atype", substr($buffer, 156, 1));
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$filetype = (int) trim($tmp['type']);
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if ($filetype == 5)
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{
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$mkdir_ary[] = "$dst$filename";
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}
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else if (dirname($filename) != '.')
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{
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$mkdir_alt_ary[] = $dst . dirname($filename);
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}
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}
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}
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$mkdir_alt_ary = array_unique($mkdir_alt_ary);
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// Create the directory structure
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if (sizeof($mkdir_ary) || sizeof($mkdir_alt_ary))
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{
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if (!sizeof($mkdir_ary) && sizeof($mkdir_alt_ary))
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{
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$mkdir_ary = $mkdir_alt_ary;
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unset($mkdir_alt_ary);
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}
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sort($mkdir_ary);
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foreach ($mkdir_ary as $dir)
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{
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if (!@mkdir($dir, 0777))
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{
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trigger_error("Could not create directory $dir");
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}
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@chmod("$dir", 0777);
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}
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}
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// If this is a .bz2 we need to close and re-open the file in order
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// to reset the file pointer since we cannot apparently rewind it
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if ($this->isbz)
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{
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$this->close();
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$this->open();
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}
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else
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{
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fseek($this->fp, 0);
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}
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// Write out the files
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$size = 0;
|
||
while ($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']);
|
||
|
||
if ($filetype == 0 || $filetype == "\0")
|
||
{
|
||
$tmp = unpack("A12size", substr($buffer, 124, 12));
|
||
$filesize = octdec((int) trim($tmp['size']));
|
||
|
||
if (!($fp = fopen("$dst$filename", 'wb')))
|
||
{
|
||
trigger_error("Could create file $filename");
|
||
}
|
||
@chmod("$dst$filename", 0777);
|
||
|
||
$size = 0;
|
||
continue;
|
||
}
|
||
}
|
||
|
||
$size += 512;
|
||
$length = ($size > $filesize) ? 512 - ($size - $filesize) : 512;
|
||
|
||
$tmp = unpack("A512data", $buffer);
|
||
|
||
fwrite($fp, (string) $tmp['data'], $length);
|
||
unset($buffer);
|
||
}
|
||
}
|
||
|
||
function close()
|
||
{
|
||
$fzclose = ($this->isbz && function_exists('bzclose')) ? 'bzclose' : (($this->isgz && extension_loaded('zlib')) ? 'gzclose' : 'fclose');
|
||
$fzclose($this->fp);
|
||
}
|
||
|
||
function data($name, $data, $mtime = false, $is_dir = false)
|
||
{
|
||
$fzwrite = ($this->isbz && function_exists('bzwrite')) ? 'bzwrite' : (($this->isgz && extension_loaded('zlib')) ? 'gzwrite' : 'fwrite');
|
||
|
||
$mode = ($is_dir) ? '493' : '436';
|
||
$mtime = (!$mtime) ? time() : $mtime;
|
||
$filesize = ($is_dir) ? 0 : strlen($data);
|
||
$typeflag = ($is_dir) ? '5' : '';
|
||
|
||
$header = '';
|
||
$header .= pack("a100", $name);
|
||
$header .= pack("a8", sprintf("%07o", $mode));
|
||
$header .= pack("a8", sprintf("%07o", 0));
|
||
$header .= pack("a8", sprintf("%07o", 0));
|
||
$header .= pack("a12", sprintf("%011o", $filesize));
|
||
$header .= pack("A12", sprintf("%011o", $mtime)); // From a12 to A12
|
||
$header .= ' ';
|
||
$header .= pack("a", $typeflag);
|
||
$header .= pack("a100", '');
|
||
$header .= 'ustar';
|
||
$header .= pack("x");
|
||
$header .= '00';
|
||
$header .= pack("x247");
|
||
|
||
// Checksum
|
||
$checksum = 0;
|
||
for ($i = 0; $i < 512; $i++)
|
||
{
|
||
$b = unpack("c1char", substr($header, $i, 1));
|
||
$checksum += $b['char'];
|
||
}
|
||
$header = substr_replace($header, pack("a8",sprintf("%07o", $checksum)), 148, 8);
|
||
|
||
$fzwrite($this->fp, $header);
|
||
|
||
$i = 0;
|
||
// Read the data 512 bytes at a time and write it out
|
||
while ($buffer = substr($data, $i, 512))
|
||
{
|
||
$fzwrite($this->fp, pack("a512", $buffer));
|
||
$i += 512;
|
||
}
|
||
unset($data);
|
||
}
|
||
|
||
function open()
|
||
{
|
||
$fzopen = ($this->isbz && function_exists('bzopen')) ? 'bzopen' : (($this->isgz && extension_loaded('zlib')) ? 'gzopen' : 'fopen');
|
||
$this->fp = @$fzopen($this->file, $this->mode . 'b' . (($fzopen == 'gzopen') ? '9' : ''));
|
||
|
||
if (!$this->fp)
|
||
{
|
||
trigger_error('Unable to open file ' . $this->file . ' [' . $fzopen . ' - ' . $this->mode . 'b]');
|
||
}
|
||
}
|
||
|
||
function download($filename)
|
||
{
|
||
global $phpbb_root_path;
|
||
|
||
switch ($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: $mimetype; name=\"$filename.$this->type\"");
|
||
header("Content-disposition: attachment; filename=$filename.$this->type");
|
||
|
||
$fp = fopen("{$phpbb_root_path}store/$filename.$this->type", 'rb');
|
||
while ($buffer = fread($fp, 1024))
|
||
{
|
||
echo $buffer;
|
||
}
|
||
fclose($fp);
|
||
}
|
||
}
|
||
|
||
?>
|