CWebDavStorageCore::checkRights

protected function checkRights($action, array $element = array())
{
	//return true;
	//maybe throw expection?
	$action = mb_strtolower($action);
	if($action == 'create')
	{
		return $this->init()
					->getWebDav()
						->checkWebRights('PUT', array(
							'arElement' => array(
								'is_dir' => false,
								'parent_id' => $element['targetDirectoryId'],
							),
							'action' => 'create',
							'create_element_in_section' => true,
						), false);
	}
	elseif($action == 'update' && !empty($element['targetElementId']))
	{
			return $this
				->init()
				->getWebDav()
					->checkWebRights('PUT', array('arElement' => array(
						'not_found' => false,
						'item_id' => $element['targetElementId'],
						'is_dir' => false,
				), 'action' => 'edit'), false);
	}

	return false;
}