CDavWebDavServer::LOCK

protected function LOCK($locktoken, &$httpTimeout, &$owner, &$scope, &$type, $update)
{
	/** @var CDavRequest $request */
	$request = $this->request;
	$requestPath = Encoding::convertEncoding($request->getPath(), 'UTF-8', SITE_CHARSET);

	list($storage, $path) = self::ParsePath($requestPath);

	if (!$storage)
	{
		return '409 Conflict';
	}

	$path = CDavVirtualFileSystem::GetLockPath("WS" . ($storage->getId()), $path);

//		if (!$arRequestPath["id"] || $request->GetDepth() || !$handler->CheckPrivilegesByPath("DAV:write", $request->GetPrincipal(), $arRequestPath["site"], $arRequestPath["account"], $arRequestPath["path"]))
//			return '409 Conflict';

	$httpTimeout = time() + 300;

	if (!$update)
	{
		$ret = CDavVirtualFileSystem::Lock($path, $locktoken, $httpTimeout, $owner, $scope, $type);
		return $ret ? '200 OK' : '409 Conflict';
	}

	$ret = CDavVirtualFileSystem::UpdateLock($path, $locktoken, $httpTimeout, $owner, $scope, $type);
	return $ret;
}