| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| |
| package org.apache.vysper.xmpp.server.s2s; |
| |
| import org.apache.vysper.xmpp.addressing.Entity; |
| import org.apache.vysper.xmpp.modules.extension.xep0220_server_dailback.DialbackIdGenerator; |
| import org.apache.vysper.xmpp.protocol.NamespaceURIs; |
| import org.apache.vysper.xmpp.protocol.ResponseStanzaContainer; |
| import org.apache.vysper.xmpp.protocol.ResponseStanzaContainerImpl; |
| import org.apache.vysper.xmpp.protocol.SessionStateHolder; |
| import org.apache.vysper.xmpp.protocol.StanzaHandler; |
| import org.apache.vysper.xmpp.server.ServerRuntimeContext; |
| import org.apache.vysper.xmpp.server.SessionContext; |
| import org.apache.vysper.xmpp.server.SessionState; |
| import org.apache.vysper.xmpp.stanza.Stanza; |
| import org.apache.vysper.xmpp.stanza.StanzaBuilder; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * |
| * @author The Apache MINA Project (dev@mina.apache.org) |
| */ |
| public class FeaturesHandler implements StanzaHandler { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(FeaturesHandler.class); |
| |
| public String getName() { |
| return "features"; |
| } |
| |
| public boolean verify(Stanza stanza) { |
| if (stanza == null) return false; |
| if (!getName().equals(stanza.getName())) return false; |
| String namespaceURI = stanza.getNamespaceURI(); |
| if (namespaceURI == null) return false; |
| return namespaceURI.equals(NamespaceURIs.HTTP_ETHERX_JABBER_ORG_STREAMS); |
| } |
| |
| public boolean isSessionRequired() { |
| return true; |
| } |
| |
| public ResponseStanzaContainer execute(Stanza stanza, ServerRuntimeContext serverRuntimeContext, |
| boolean isOutboundStanza, SessionContext sessionContext, SessionStateHolder sessionStateHolder) { |
| if(sessionStateHolder.getState() != SessionState.AUTHENTICATED) { |
| Entity otherServer = sessionContext.getInitiatingEntity(); |
| |
| if(startTlsSupported(stanza) && serverRuntimeContext.getSslContext() != null) { |
| // remote server support TLS and we got keys set up |
| LOG.info("XMPP server connector to {} is starting TLS", otherServer); |
| Stanza startTlsStanza = new StanzaBuilder("starttls", NamespaceURIs.URN_IETF_PARAMS_XML_NS_XMPP_TLS).build(); |
| |
| return new ResponseStanzaContainerImpl(startTlsStanza); |
| } else if(dialbackSupported(stanza)) { |
| Entity originating = serverRuntimeContext.getServerEnitity(); |
| |
| String dailbackId = new DialbackIdGenerator().generate(otherServer, originating, sessionContext.getSessionId()); |
| |
| Stanza dbResult = new StanzaBuilder("result", NamespaceURIs.JABBER_SERVER_DIALBACK, "db") |
| .addAttribute("from", originating.getDomain()) |
| .addAttribute("to", otherServer.getDomain()) |
| .addText(dailbackId) |
| .build(); |
| |
| return new ResponseStanzaContainerImpl(dbResult); |
| } else { |
| // TODO how to handle |
| throw new RuntimeException("Unsupported features"); |
| } |
| } |
| |
| return null; |
| } |
| |
| private boolean startTlsSupported(Stanza stanza) { |
| return !stanza.getInnerElementsNamed("starttls", NamespaceURIs.URN_IETF_PARAMS_XML_NS_XMPP_TLS).isEmpty(); |
| } |
| |
| private boolean dialbackSupported(Stanza stanza) { |
| return !stanza.getInnerElementsNamed("dialback", NamespaceURIs.URN_XMPP_FEATURES_DIALBACK).isEmpty(); |
| } |
| |
| |
| } |