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<?php
/**
*
* @package phpBB3
* @copyright (c) 2013 phpBB Group
* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
*
*/
use Symfony\Component\HttpFoundation\Request;
/**
* @ignore
*/
if (!defined('IN_PHPBB'))
{
exit;
}
/**
* A class with various functions that are related to paths, files and the filesystem
* @package phpBB3
*/
class phpbb_filesystem
{
/** @var string */
protected $phpbb_root_path;
/**
* Constructor
*
* @param string $phpbb_root_path
*/
public function __construct($phpbb_root_path)
{
$this->phpbb_root_path = $phpbb_root_path;
}
/**
* Get the phpBB root path
*
* @return string
*/
public function get_phpbb_root_path()
{
return $this->phpbb_root_path;
}
/**
* Update a path to the correct relative root path
*
* This replaces $phpbb_root_path . some_url with
* get_web_root_path() . some_url OR if $phpbb_root_path
* is not at the beginning of $path, just prepends the
* web root path
*
* @param Request $symfony_request Symfony Request object
* @return string
*/
public function update_web_root_path($path, Request $symfony_request = null)
{
$web_root_path = $this->get_web_root_path($symfony_request);
if (strpos($path, $this->phpbb_root_path) === 0)
{
$path = substr($path, strlen($this->phpbb_root_path));
}
return $web_root_path . $path;
}
/**
* Get a relative root path from the current URL
*
* @param Request $symfony_request Symfony Request object
* @return string
*/
public function get_web_root_path(Request $symfony_request = null)
{
if ($symfony_request === null)
{
return $this->phpbb_root_path;
}
static $path;
if (null !== $path)
{
return $path;
}
$path_info = $symfony_request->getPathInfo();
if ($path_info === '/')
{
return $path = $this->phpbb_root_path;
}
$path_info = $this->clean_path($path_info);
// Do not count / at start of path
$corrections = substr_count(substr($path_info, 1), '/');
// When URL Rewriting is enabled, app.php is optional. We have to
// correct for it not being there
if (strpos($symfony_request->getRequestUri(), $symfony_request->getScriptName()) === false)
{
$corrections -= 1;
}
return $path = $this->phpbb_root_path . str_repeat('../', $corrections);
}
/**
* Eliminates useless . and .. components from specified path.
*
* @param string $path Path to clean
* @return string Cleaned path
*/
public function clean_path($path)
{
$exploded = explode('/', $path);
$filtered = array();
foreach ($exploded as $part)
{
if ($part === '.' && !empty($filtered))
{
continue;
}
if ($part === '..' && !empty($filtered) && $filtered[sizeof($filtered) - 1] !== '..')
{
array_pop($filtered);
}
else
{
$filtered[] = $part;
}
}
$path = implode('/', $filtered);
return $path;
}
}
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