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GR0V Shell
GR0V shell
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<?php
/**
* @version $Id:tar.php 6961 2007-03-15 16:06:53Z tcp $
* @package Joomla.Framework
* @subpackage FileSystem
* @copyright Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved.
* @license GNU/GPL, see LICENSE.php
* Joomla! is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/
// Check to ensure this file is within the rest of the framework
defined('JPATH_BASE') or die();
/**
* Tar format adapter for the JArchive class
*
* This class is inspired from and draws heavily in code and concept from the Compress package of
* The Horde Project <http://www.horde.org>
*
* @contributor Michael Slusarz <slusarz@horde.org>
* @contributor Michael Cochrane <mike@graftonhall.co.nz>
*
* @package Joomla.Framework
* @subpackage FileSystem
* @since 1.5
*/
class JArchiveTar extends JObject
{
/**
* Tar file types.
* @var array
*/
var $_types = array (
0x0 => 'Unix file',
0x30 => 'File',
0x31 => 'Link',
0x32 => 'Symbolic link',
0x33 => 'Character special file',
0x34 => 'Block special file',
0x35 => 'Directory',
0x36 => 'FIFO special file',
0x37 => 'Contiguous file'
);
/**
* Tar file flags.
* @var array
*/
var $_flags = array (
'FTEXT' => 0x01,
'FHCRC' => 0x02,
'FEXTRA' => 0x04,
'FNAME' => 0x08,
'FCOMMENT' => 0x10
);
/**
* Tar file data buffer
* @var string
*/
var $_data = null;
/**
* Tar file metadata array
* @var array
*/
var $_metadata = null;
/**
* Extract a ZIP compressed file to a given path
*
* @access public
* @param string $archive Path to ZIP archive to extract
* @param string $destination Path to extract archive into
* @param array $options Extraction options [unused]
* @return boolean True if successful
* @since 1.5
*/
function extract($archive, $destination, $options = array ())
{
// Initialize variables
$this->_data = null;
$this->_metadata = null;
if (!$this->_data = JFile::read($archive))
{
$this->set('error.message', 'Unable to read archive');
return JError::raiseWarning(100, $this->get('error.message'));
}
if (!$this->_getTarInfo($this->_data))
{
return JError::raiseWarning(100, $this->get('error.message'));
}
for ($i=0,$n=count($this->_metadata);$i<$n;$i++)
{
$type = strtolower( $this->_metadata[$i]['type'] );
if ($type == 'file' || $type == 'unix file')
{
$buffer = $this->_metadata[$i]['data'];
$path = JPath::clean($destination.DS.$this->_metadata[$i]['name']);
// Make sure the destination folder exists
if (!JFolder::create(dirname($path)))
{
$this->set('error.message', 'Unable to create destination');
return JError::raiseWarning(100, $this->get('error.message'));
}
if (JFile::write($path, $buffer) === false)
{
$this->set('error.message', 'Unable to write entry');
return JError::raiseWarning(100, $this->get('error.message'));
}
}
}
return true;
}
/**
* Get the list of files/data from a Tar archive buffer.
*
* @access private
* @param string $data The Tar archive buffer.
* @return array Archive metadata array
* <pre>
* KEY: Position in the array
* VALUES: 'attr' -- File attributes
* 'data' -- Raw file contents
* 'date' -- File modification time
* 'name' -- Filename
* 'size' -- Original file size
* 'type' -- File type
* </pre>
* @since 1.5
*/
function _getTarInfo(& $data)
{
$position = 0;
$return_array = array ();
while ($position < strlen($data))
{
$info = @ unpack("a100filename/a8mode/a8uid/a8gid/a12size/a12mtime/a8checksum/Ctypeflag/a100link/a6magic/a2version/a32uname/a32gname/a8devmajor/a8devminor", substr($data, $position));
if (!$info) {
$this->set('error.message', 'Unable to decompress data');
return false;
}
$position += 512;
$contents = substr($data, $position, octdec($info['size']));
$position += ceil(octdec($info['size']) / 512) * 512;
if ($info['filename']) {
$file = array (
'attr' => null,
'data' => null,
'date' => octdec($info['mtime']
), 'name' => trim($info['filename']), 'size' => octdec($info['size']), 'type' => isset ($this->_types[$info['typeflag']]) ? $this->_types[$info['typeflag']] : null);
if (($info['typeflag'] == 0) || ($info['typeflag'] == 0x30) || ($info['typeflag'] == 0x35)) {
/* File or folder. */
$file['data'] = $contents;
$mode = hexdec(substr($info['mode'], 4, 3));
$file['attr'] = (($info['typeflag'] == 0x35) ? 'd' : '-') .
(($mode & 0x400) ? 'r' : '-') .
(($mode & 0x200) ? 'w' : '-') .
(($mode & 0x100) ? 'x' : '-') .
(($mode & 0x040) ? 'r' : '-') .
(($mode & 0x020) ? 'w' : '-') .
(($mode & 0x010) ? 'x' : '-') .
(($mode & 0x004) ? 'r' : '-') .
(($mode & 0x002) ? 'w' : '-') .
(($mode & 0x001) ? 'x' : '-');
} else {
/* Some other type. */
}
$return_array[] = $file;
}
}
$this->_metadata = $return_array;
return true;
}
}
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