/**
* Attempts to get the file path of the given directory (as relative to the URL).
*
* @param string $file The relative path of the directory to find.
*
* @return string|bool Returns the path to the local directory, or boolean FALSE on failure.
*/
public static function cache_dir_path($file)
{
$docroot = strtr($_SERVER['DOCUMENT_ROOT'], '\\', '/');
$self = strtr($_SERVER['PHP_SELF'], '\\', '/');
if (substr($docroot, -1) != '/') {
$docroot .= '/';
}
if (substr($self, 0, 1) == '/') {
$self = substr($self, 1);
}
$base_dir = get::dirname($docroot . $self);
if (substr($base_dir, -1) != '/') {
$base_dir .= '/';
}
if (strlen($file) > strlen($docroot) && strtolower(substr($file, 0, strlen($docroot))) == strtolower($docroot)) {
$file = substr($file, strlen($docroot));
}
//try relative (from basename of URL file, and server docroot)
if (file_exists($base_dir . $file) && is_dir($base_dir . $file)) {
$path = get::realpath($base_dir . $file);
if ($path !== false && strtolower(substr($path, 0, strlen($docroot))) == strtolower($docroot)) {
//file is within the website
return $path;
}
}
if (file_exists($docroot . $file) && is_dir($docroot . $file)) {
$path = get::realpath($docroot . $file);
if ($path !== false && strtolower(substr($path, 0, strlen($docroot))) == strtolower($docroot)) {
//file is within the website
return $path;
}
}
//file is outside of the website - hacking attempt (or doesn't exist)
return false;
}
