nextcloud / server

	 * @param string $displayName

	 * @return bool Whether the display name could get set

	 */

	public static function setDisplayName($uid, $displayName = null) {

		if (is_null($displayName)) {

			$displayName = $uid;

		}

		$user = \OC::$server->getUserManager()->get($uid);

		if ($user) {

			return $user->setDisplayName($displayName);

		} else {

			return false;

		}

	}

	/**

	 * Check if the user is logged in, considers also the HTTP basic credentials

	 * Check if the password is correct without logging in the user

	 * returns the user id or false

	 */

	public static function checkPassword($uid, $password) {

		$manager = \OC::$server->getUserManager();

		$username = $manager->checkPassword($uid, $password);

		if ($username !== false) {

			return $username->getUID();

		}

		return false;

	}

	/**

	 * @param string $uid The username