package org.argeo.cms.websocket;

/** <strong>Disabled until third party issues are solved.</strong>. Customises the initialisation of a new web socket. */
public class CmsWebSocketConfigurator {
//extends Configurator {
//	public final static String WEBSOCKET_SUBJECT = "org.argeo.cms.websocket.subject";
//
//	private final static CmsLog log = CmsLog.getLog(CmsWebSocketConfigurator.class);
//	final static String HEADER_WWW_AUTHENTICATE = "WWW-Authenticate";
//
//	@Override
//	public boolean checkOrigin(String originHeaderValue) {
//		return true;
//	}
//
//	@Override
//	public <T> T getEndpointInstance(Class<T> endpointClass) throws InstantiationException {
//		try {
//			return endpointClass.getDeclaredConstructor().newInstance();
//		} catch (Exception e) {
//			throw new IllegalArgumentException("Cannot get endpoint instance", e);
//		}
//	}
//
//	@Override
//	public List<Extension> getNegotiatedExtensions(List<Extension> installed, List<Extension> requested) {
//		return requested;
//	}
//
//	@Override
//	public String getNegotiatedSubprotocol(List<String> supported, List<String> requested) {
//		if ((requested == null) || (requested.size() == 0))
//			return "";
//		if ((supported == null) || (supported.isEmpty()))
//			return "";
//		for (String possible : requested) {
//			if (possible == null)
//				continue;
//			if (supported.contains(possible))
//				return possible;
//		}
//		return "";
//	}
//
//	@Override
//	public void modifyHandshake(ServerEndpointConfig sec, HandshakeRequest request, HandshakeResponse response) {
//
//		RemoteAuthSession httpSession = new ServletHttpSession((javax.servlet.http.HttpSession) request.getHttpSession());
//		if (log.isDebugEnabled() && httpSession != null)
//			log.debug("Web socket HTTP session id: " + httpSession.getId());
//
//		if (httpSession == null) {
//			rejectResponse(response, null);
//		}
//		try {
//			LoginContext lc = new LoginContext(CmsAuth.LOGIN_CONTEXT_USER,
//					new RemoteAuthCallbackHandler(httpSession));
//			lc.login();
//			if (log.isDebugEnabled())
//				log.debug("Web socket logged-in as " + lc.getSubject());
//			Subject.doAs(lc.getSubject(), new PrivilegedAction<Void>() {
//
//				@Override
//				public Void run() {
//					sec.getUserProperties().put(ServletContextHelper.REMOTE_USER, AccessController.getContext());
//					return null;
//				}
//
//			});
//		} catch (Exception e) {
//			rejectResponse(response, e);
//		}
//	}
//
//	/**
//	 * Behaviour when the web socket could not be authenticated. Throws an
//	 * {@link IllegalStateException} by default.
//	 * 
//	 * @param e can be null
//	 */
//	protected void rejectResponse(HandshakeResponse response, Exception e) {
//		// violent implementation, as suggested in
//		// https://stackoverflow.com/questions/21763829/jsr-356-how-to-abort-a-websocket-connection-during-the-handshake
////		throw new IllegalStateException("Web socket cannot be authenticated");
//	}
}