/* * 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.modules.core.starttls.handler; import org.apache.vysper.xml.fragment.XMLElementVerifier; 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.server.response.ServerErrorResponses; import org.apache.vysper.xmpp.server.response.ServerResponses; import org.apache.vysper.xmpp.stanza.Stanza; /** * * @author The Apache MINA Project (dev@mina.apache.org) */ public class StartTLSHandler implements StanzaHandler { public String getName() { return "starttls"; } public boolean verify(Stanza stanza) { if (stanza == null) return false; if (!getName().equals(stanza.getName())) return false; return true; } public boolean isSessionRequired() { return true; } public ResponseStanzaContainer execute(Stanza stanza, ServerRuntimeContext serverRuntimeContext, boolean isOutboundStanza, SessionContext sessionContext, SessionStateHolder sessionStateHolder) { XMLElementVerifier xmlElementVerifier = stanza.getVerifier(); boolean tlsNamespace = xmlElementVerifier.namespacePresent(NamespaceURIs.URN_IETF_PARAMS_XML_NS_XMPP_TLS); if (!tlsNamespace) { return respondTLSFailure(); } if (sessionStateHolder.getState() != SessionState.STARTED) { return respondTLSFailure(); } Stanza responseStanza = new ServerResponses().getTLSProceed(); // if all is correct, go to next phase sessionStateHolder.setState(SessionState.ENCRYPTION_STARTED); sessionContext.switchToTLS(true, false); return new ResponseStanzaContainerImpl(responseStanza); } private ResponseStanzaContainer respondTLSFailure() { return new ResponseStanzaContainerImpl(ServerErrorResponses.getTLSFailure()); } }