| /** |
| * $RCSfile$ |
| * $Revision$ |
| * $Date$ |
| * |
| * Copyright 2009 Jive Software. |
| * |
| * All rights reserved. Licensed 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.jivesoftware.smack; |
| |
| import java.io.StringReader; |
| |
| import org.jivesoftware.smack.util.PacketParserUtils; |
| import org.jivesoftware.smack.sasl.SASLMechanism.Challenge; |
| import org.jivesoftware.smack.sasl.SASLMechanism.Failure; |
| import org.jivesoftware.smack.sasl.SASLMechanism.Success; |
| import org.xmlpull.v1.XmlPullParserFactory; |
| import org.xmlpull.v1.XmlPullParser; |
| |
| import com.kenai.jbosh.AbstractBody; |
| import com.kenai.jbosh.BOSHClientResponseListener; |
| import com.kenai.jbosh.BOSHMessageEvent; |
| import com.kenai.jbosh.BodyQName; |
| import com.kenai.jbosh.ComposableBody; |
| |
| /** |
| * Listens for XML traffic from the BOSH connection manager and parses it into |
| * packet objects. |
| * |
| * @author Guenther Niess |
| */ |
| public class BOSHPacketReader implements BOSHClientResponseListener { |
| |
| private BOSHConnection connection; |
| |
| /** |
| * Create a packet reader which listen on a BOSHConnection for received |
| * HTTP responses, parse the packets and notifies the connection. |
| * |
| * @param connection the corresponding connection for the received packets. |
| */ |
| public BOSHPacketReader(BOSHConnection connection) { |
| this.connection = connection; |
| } |
| |
| /** |
| * Parse the received packets and notify the corresponding connection. |
| * |
| * @param event the BOSH client response which includes the received packet. |
| */ |
| public void responseReceived(BOSHMessageEvent event) { |
| AbstractBody body = event.getBody(); |
| if (body != null) { |
| try { |
| if (connection.sessionID == null) { |
| connection.sessionID = body.getAttribute(BodyQName.create(BOSHConnection.BOSH_URI, "sid")); |
| } |
| if (connection.authID == null) { |
| connection.authID = body.getAttribute(BodyQName.create(BOSHConnection.BOSH_URI, "authid")); |
| } |
| final XmlPullParser parser = XmlPullParserFactory.newInstance().newPullParser(); |
| parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, |
| true); |
| parser.setInput(new StringReader(body.toXML())); |
| int eventType = parser.getEventType(); |
| do { |
| eventType = parser.next(); |
| if (eventType == XmlPullParser.START_TAG) { |
| if (parser.getName().equals("body")) { |
| // ignore the container root element |
| } else if (parser.getName().equals("message")) { |
| connection.processPacket(PacketParserUtils.parseMessage(parser)); |
| } else if (parser.getName().equals("iq")) { |
| connection.processPacket(PacketParserUtils.parseIQ(parser, connection)); |
| } else if (parser.getName().equals("presence")) { |
| connection.processPacket(PacketParserUtils.parsePresence(parser)); |
| } else if (parser.getName().equals("challenge")) { |
| // The server is challenging the SASL authentication |
| // made by the client |
| final String challengeData = parser.nextText(); |
| connection.getSASLAuthentication() |
| .challengeReceived(challengeData); |
| connection.processPacket(new Challenge( |
| challengeData)); |
| } else if (parser.getName().equals("success")) { |
| connection.send(ComposableBody.builder() |
| .setNamespaceDefinition("xmpp", BOSHConnection.XMPP_BOSH_NS) |
| .setAttribute( |
| BodyQName.createWithPrefix(BOSHConnection.XMPP_BOSH_NS, "restart", "xmpp"), |
| "true") |
| .setAttribute( |
| BodyQName.create(BOSHConnection.BOSH_URI, "to"), |
| connection.getServiceName()) |
| .build()); |
| connection.getSASLAuthentication().authenticated(); |
| connection.processPacket(new Success(parser.nextText())); |
| } else if (parser.getName().equals("features")) { |
| parseFeatures(parser); |
| } else if (parser.getName().equals("failure")) { |
| if ("urn:ietf:params:xml:ns:xmpp-sasl".equals(parser.getNamespace(null))) { |
| final Failure failure = PacketParserUtils.parseSASLFailure(parser); |
| connection.getSASLAuthentication().authenticationFailed(); |
| connection.processPacket(failure); |
| } |
| } else if (parser.getName().equals("error")) { |
| throw new XMPPException(PacketParserUtils.parseStreamError(parser)); |
| } |
| } |
| } while (eventType != XmlPullParser.END_DOCUMENT); |
| } |
| catch (Exception e) { |
| if (connection.isConnected()) { |
| connection.notifyConnectionError(e); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Parse and setup the XML stream features. |
| * |
| * @param parser the XML parser, positioned at the start of a message packet. |
| * @throws Exception if an exception occurs while parsing the packet. |
| */ |
| private void parseFeatures(XmlPullParser parser) throws Exception { |
| boolean done = false; |
| while (!done) { |
| int eventType = parser.next(); |
| |
| if (eventType == XmlPullParser.START_TAG) { |
| if (parser.getName().equals("mechanisms")) { |
| // The server is reporting available SASL mechanisms. Store |
| // this information |
| // which will be used later while logging (i.e. |
| // authenticating) into |
| // the server |
| connection.getSASLAuthentication().setAvailableSASLMethods( |
| PacketParserUtils.parseMechanisms(parser)); |
| } else if (parser.getName().equals("bind")) { |
| // The server requires the client to bind a resource to the |
| // stream |
| connection.getSASLAuthentication().bindingRequired(); |
| } else if (parser.getName().equals("session")) { |
| // The server supports sessions |
| connection.getSASLAuthentication().sessionsSupported(); |
| } else if (parser.getName().equals("register")) { |
| connection.getAccountManager().setSupportsAccountCreation( |
| true); |
| } |
| } else if (eventType == XmlPullParser.END_TAG) { |
| if (parser.getName().equals("features")) { |
| done = true; |
| } |
| } |
| } |
| } |
| } |