CWebDavFile::LOCK

function LOCK(&$options)
{
	$this->IsDir();
	if (
		$this->arParams["is_dir"]
		&& !empty($options["depth"])
	)
		return "409 Conflict";

	$options["timeout"] = time() + 300;

	$arProps = $this->_get_props($this->arParams["parent_id"].$this->arParams["base_name"]);
	if (isset($options["update"]))
	{
		$token = $options["update"];
		if (
			array_key_exists("LOCK", $arProps) &&
			array_key_exists($token, $arProps["LOCK"]) &&
			(array_key_exists("owner", $arProps["LOCK"][$token]) && $arProps["LOCK"][$token]["owner"] <> '') &&
			(array_key_exists("exclusivelock", $arProps["LOCK"][$token]) && $arProps["LOCK"][$token]["exclusivelock"] <> '')
			)
		{
			$arProps["LOCK"][$token]["expires"] = $options["timeout"];
			$arProps["LOCK"][$token]["modified"] = time();

			$options["owner"] = $GLOBALS['USER']->GetLogin();
			$options["scope"] = $arProps["LOCK"][$token]["exclusivelock"] ? "exclusive" : "shared";
			$options["type"]  = $arProps["LOCK"][$token]["exclusivelock"] ? "write"		: "read";
			return true;
		}
		else
		{
			return false;
		}
	}

	$arProps["LOCK"][$options["locktoken"]] = array(
		"created" => time(),
		"modified" => time(),
		"owner" => $GLOBALS['USER']->GetLogin(),
		"token" => $options["locktoken"],
		"expires" => $options["timeout"],
		"exclusivelock" => ($options["scope"] === "exclusive" ? 1 : 0)
	);

	$this->_set_props($this->arParams["parent_id"].$this->arParams["base_name"], $arProps);
	return "200 OK";
}