/**
*
* Copyright 2003-2005 Jive Software.
*
* 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.smackx.jingleold;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.jivesoftware.smack.ConnectionCreationListener;
import org.jivesoftware.smack.SmackException;
import org.jivesoftware.smack.StanzaListener;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPConnectionRegistry;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.filter.StanzaFilter;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.packet.Presence;
import org.jivesoftware.smack.packet.Stanza;
import org.jivesoftware.smack.provider.ProviderManager;
import org.jivesoftware.smack.roster.Roster;
import org.jivesoftware.smack.roster.RosterListener;
import org.jivesoftware.smackx.disco.ServiceDiscoveryManager;
import org.jivesoftware.smackx.jingleold.listeners.CreatedJingleSessionListener;
import org.jivesoftware.smackx.jingleold.listeners.JingleListener;
import org.jivesoftware.smackx.jingleold.listeners.JingleSessionListener;
import org.jivesoftware.smackx.jingleold.listeners.JingleSessionRequestListener;
import org.jivesoftware.smackx.jingleold.media.JingleMediaManager;
import org.jivesoftware.smackx.jingleold.media.PayloadType;
import org.jivesoftware.smackx.jingleold.nat.BasicTransportManager;
import org.jivesoftware.smackx.jingleold.nat.TransportCandidate;
import org.jivesoftware.smackx.jingleold.nat.TransportResolver;
import org.jivesoftware.smackx.jingleold.packet.Jingle;
import org.jivesoftware.smackx.jingleold.provider.JingleProvider;
import org.jxmpp.jid.EntityFullJid;
import org.jxmpp.jid.Jid;
/**
* Jingle is a session establishment protocol defined in (XEP-0166).
* It defines a framework for negotiating and managing out-of-band ( data that is send and receive through other connection than XMPP connection) data sessions over XMPP.
* With this protocol you can setup VOIP Calls, Video Streaming, File transfers and whatever out-of-band session based transmission.
*
* To create a Jingle Session you need a Transport method and a Payload type.
*
*
* A transport method is how it will transmit and receive network packets. Transport MUST have one or more candidates.
* A transport candidate is an IP Address with a defined port, that other party must send data to.
*
*
* A supported payload type, is the data encoding format that the jmf will be transmitted.
* For instance an Audio Payload "GSM".
*
*
* A Jingle session negotiates a payload type and a pair of transport candidates.
* Which means that when a Jingle Session is established you will have two defined transport candidates with addresses
* and a defined Payload type.
* In other words, you will have two IP address with their respective ports, and a Codec type defined.
*
*
* The JingleManager is a facade built upon Jabber Jingle (XEP-166) to allow the
* use of Jingle. This implementation allows the user to simply
* use this class for setting the Jingle parameters, create and receive Jingle Sessions.
*
*
* In order to use the Jingle, the user must provide a
* TransportManager that will handle the resolution of potential IP addresses that can be used to transport the streaming (jmf).
* This TransportManager can be initialized with several default resolvers,
* including a fixed solver that can be used when the address and port are know
* in advance.
* This API have ready to use Transport Managers, for instance: BasicTransportManager, STUNTransportManager, BridgedTransportManager.
*
*
* You should also specify a JingleMediaManager if you want that JingleManager assume Media control
* Using a JingleMediaManager implementation is the easier way to implement a Jingle Application.
*
*
* Otherwise before creating an outgoing connection, the user must create jingle session
* listeners that will be called when different events happen. The most
* important event is sessionEstablished(), that will be called when all
* the negotiations are finished, providing the payload type for the
* transmission as well as the remote and local addresses and ports for the
* communication. See JingleSessionListener for a complete list of events that can be
* observed.
*
* This is an example of how to use the JingleManager:
* This example implements a Jingle VOIP Call between two users.
*
* To wait for an Incoming Jingle Session:
* try {
* // Connect to an XMPP Server
* XMPPConnection x1 = new XMPPTCPConnection("xmpp.com");
* x1.connect();
* x1.login("juliet", "juliet");
* // Create a JingleManager using a BasicResolver
* final JingleManager jm1 = new JingleManager(
* x1, new BasicTransportManager());
* // Create a JingleMediaManager. In this case using Jingle Audio Media API
* JingleMediaManager jingleMediaManager = new AudioMediaManager();
* // Set the JingleMediaManager
* jm1.setMediaManager(jingleMediaManager);
* // Listen for incoming calls
* jm1.addJingleSessionRequestListener(new JingleSessionRequestListener() {
* public void sessionRequested(JingleSessionRequest request) {
* try {
* // Accept the call
* IncomingJingleSession session = request.accept();
* // Start the call
* session.start();
* } catch (XMPPException e) {
* LOGGER.log(Level.WARNING, "exception", e);
* }
* }
* });
* Thread.sleep(15000);
* } catch (Exception e) {
* LOGGER.log(Level.WARNING, "exception", e);
* }
* To create an Outgoing Jingle Session:
* try {
* // Connect to an XMPP Server
* XMPPConnection x0 = new XMPPTCPConnection("xmpp.com");
* x0.connect();
* x0.login("romeo", "romeo");
* // Create a JingleManager using a BasicResolver
* final JingleManager jm0 = new JingleManager(
* x0, new BasicTransportManager());
* // Create a JingleMediaManager. In this case using Jingle Audio Media API
* JingleMediaManager jingleMediaManager = new AudioMediaManager(); // Using Jingle Media API
* // Set the JingleMediaManager
* jm0.setMediaManager(jingleMediaManager);
* // Create a new Jingle Call with a full JID
* OutgoingJingleSession js0 = jm0.createOutgoingJingleSession("juliet@xmpp.com/Smack");
* // Start the call
* js0.start();
* Thread.sleep(10000);
* js0.terminate();
* Thread.sleep(3000);
* } catch (Exception e) {
* LOGGER.log(Level.WARNING, "exception", e);
* }
*
*
* @author Thiago Camargo
* @author Alvaro Saurin
* @author Jeff Williams
* @see JingleListener
* @see TransportResolver
* @see JingleSession
* @see JingleSession
* @see JingleMediaManager
* @see BasicTransportManager , STUNTransportManager, BridgedTransportManager, TransportResolver, BridgedResolver, ICEResolver, STUNResolver and BasicResolver.
*/
@SuppressWarnings("SynchronizeOnNonFinalField")
public class JingleManager implements JingleSessionListener {
private static final Logger LOGGER = Logger.getLogger(JingleManager.class.getName());
// non-static
private final List jingleSessions = new ArrayList<>();
// Listeners for manager events (ie, session requests...)
private List jingleSessionRequestListeners;
// Listeners for created JingleSessions
private final List creationListeners = new ArrayList<>();
// The XMPP connection
private final XMPPConnection connection;
// The Media Managers
private List jingleMediaManagers;
/**
* Default constructor with a defined XMPPConnection, Transport Resolver and a Media Manager.
* If a fully implemented JingleMediaSession is entered, JingleManager manage Jingle signalling and jmf
*
* @param connection XMPP XMPPConnection to be used
* @param jingleMediaManagers an implemented JingleMediaManager to be used.
* @throws SmackException
* @throws XMPPException
*/
public JingleManager(XMPPConnection connection, List jingleMediaManagers) throws XMPPException, SmackException {
this.connection = connection;
this.jingleMediaManagers = jingleMediaManagers;
Roster.getInstanceFor(connection).addRosterListener(new RosterListener() {
@Override
public void entriesAdded(Collection addresses) {
}
@Override
public void entriesUpdated(Collection addresses) {
}
@Override
public void entriesDeleted(Collection addresses) {
}
@Override
public void presenceChanged(Presence presence) {
if (!presence.isAvailable()) {
Jid xmppAddress = presence.getFrom();
JingleSession aux = null;
for (JingleSession jingleSession : jingleSessions) {
if (jingleSession.getInitiator().equals(xmppAddress) || jingleSession.getResponder().equals(xmppAddress)) {
aux = jingleSession;
}
}
if (aux != null)
try {
aux.terminate();
} catch (Exception e) {
LOGGER.log(Level.WARNING, "exception", e);
}
}
}
});
}
/**
* Setup the jingle system to let the remote clients know we support Jingle.
* (This used to be a static part of construction. The problem is a remote client might
* attempt a Jingle connection to us after we've created an XMPPConnection, but before we've
* setup an instance of a JingleManager. We will appear to not support Jingle. With the new
* method you just call it once and all new connections will report Jingle support.)
*/
public static void setJingleServiceEnabled() {
ProviderManager.addIQProvider("jingle", "urn:xmpp:tmp:jingle", new JingleProvider());
// Enable the Jingle support on every established connection
// The ServiceDiscoveryManager class should have been already
// initialized
XMPPConnectionRegistry.addConnectionCreationListener(new ConnectionCreationListener() {
@Override
public void connectionCreated(XMPPConnection connection) {
JingleManager.setServiceEnabled(connection, true);
}
});
}
/**
* Enables or disables the Jingle support on a given connection.
*
* Before starting any Jingle jmf session, check that the user can handle
* it. Enable the Jingle support to indicate that this client handles Jingle
* messages.
*
*
* @param connection the connection where the service will be enabled or
* disabled
* @param enabled indicates if the service will be enabled or disabled
*/
public static synchronized void setServiceEnabled(XMPPConnection connection, boolean enabled) {
if (isServiceEnabled(connection) == enabled) {
return;
}
if (enabled) {
ServiceDiscoveryManager.getInstanceFor(connection).addFeature(Jingle.NAMESPACE);
} else {
ServiceDiscoveryManager.getInstanceFor(connection).removeFeature(Jingle.NAMESPACE);
}
}
/**
* Returns true if the Jingle support is enabled for the given connection.
*
* @param connection the connection to look for Jingle support
* @return a boolean indicating if the Jingle support is enabled for the
* given connection
*/
public static boolean isServiceEnabled(XMPPConnection connection) {
return ServiceDiscoveryManager.getInstanceFor(connection).includesFeature(Jingle.NAMESPACE);
}
/**
* Returns true if the specified user handles Jingle messages.
*
* @param connection the connection to use to perform the service discovery
* @param userID the user to check. A fully qualified xmpp ID, e.g.
* jdoe@example.com
* @return a boolean indicating whether the specified user handles Jingle
* messages
* @throws SmackException if there was no response from the server.
* @throws XMPPException
* @throws InterruptedException
*/
public static boolean isServiceEnabled(XMPPConnection connection, Jid userID) throws XMPPException, SmackException, InterruptedException {
return ServiceDiscoveryManager.getInstanceFor(connection).supportsFeature(userID, Jingle.NAMESPACE);
}
/**
* Get the Media Managers of this Jingle Manager.
*
* @return the list of JingleMediaManagers
*/
public List getMediaManagers() {
return jingleMediaManagers;
}
/**
* Set the Media Managers of this Jingle Manager.
*
* @param jingleMediaManagers JingleMediaManager to be used for open, close, start and stop jmf streamings
*/
public void setMediaManagers(List jingleMediaManagers) {
this.jingleMediaManagers = jingleMediaManagers;
}
/**
* Add a Jingle session request listenerJingle to listen to incoming session
* requests.
*
* @param jingleSessionRequestListener an implemented JingleSessionRequestListener
* @see #removeJingleSessionRequestListener(JingleSessionRequestListener)
* @see JingleListener
*/
public synchronized void addJingleSessionRequestListener(final JingleSessionRequestListener jingleSessionRequestListener) {
if (jingleSessionRequestListener != null) {
if (jingleSessionRequestListeners == null) {
initJingleSessionRequestListeners();
}
synchronized (jingleSessionRequestListeners) {
jingleSessionRequestListeners.add(jingleSessionRequestListener);
}
}
}
/**
* Removes a Jingle session listenerJingle.
*
* @param jingleSessionRequestListener The jingle session jingleSessionRequestListener to be removed
* @see #addJingleSessionRequestListener(JingleSessionRequestListener)
* @see JingleListener
*/
public void removeJingleSessionRequestListener(JingleSessionRequestListener jingleSessionRequestListener) {
if (jingleSessionRequestListeners == null) {
return;
}
synchronized (jingleSessionRequestListeners) {
jingleSessionRequestListeners.remove(jingleSessionRequestListener);
}
}
/**
* Adds a CreatedJingleSessionListener.
* This listener will be called when a session is created by the JingleManager instance.
*
* @param createdJingleSessionListener
*/
public void addCreationListener(CreatedJingleSessionListener createdJingleSessionListener) {
this.creationListeners.add(createdJingleSessionListener);
}
/**
* Removes a CreatedJingleSessionListener.
* This listener will be called when a session is created by the JingleManager instance.
*
* @param createdJingleSessionListener
*/
public void removeCreationListener(CreatedJingleSessionListener createdJingleSessionListener) {
this.creationListeners.remove(createdJingleSessionListener);
}
/**
* Trigger CreatedJingleSessionListeners that a session was created.
*
* @param jingleSession
*/
public void triggerSessionCreated(JingleSession jingleSession) {
jingleSessions.add(jingleSession);
jingleSession.addListener(this);
for (CreatedJingleSessionListener createdJingleSessionListener : creationListeners) {
try {
createdJingleSessionListener.sessionCreated(jingleSession);
} catch (Exception e) {
LOGGER.log(Level.WARNING, "exception", e);
}
}
}
@Override
public void sessionEstablished(PayloadType pt, TransportCandidate rc, TransportCandidate lc, JingleSession jingleSession) {
}
@Override
public void sessionDeclined(String reason, JingleSession jingleSession) {
jingleSession.removeListener(this);
jingleSessions.remove(jingleSession);
jingleSession.close();
LOGGER.severe("Declined:" + reason);
}
@Override
public void sessionRedirected(String redirection, JingleSession jingleSession) {
jingleSession.removeListener(this);
jingleSessions.remove(jingleSession);
}
@Override
public void sessionClosed(String reason, JingleSession jingleSession) {
jingleSession.removeListener(this);
jingleSessions.remove(jingleSession);
}
@Override
public void sessionClosedOnError(XMPPException e, JingleSession jingleSession) {
jingleSession.removeListener(this);
jingleSessions.remove(jingleSession);
}
@Override
public void sessionMediaReceived(JingleSession jingleSession, String participant) {
// Do Nothing
}
/**
* Register the listenerJingles, waiting for a Jingle stanza(/packet) that tries to
* establish a new session.
*/
private void initJingleSessionRequestListeners() {
StanzaFilter initRequestFilter = new StanzaFilter() {
// Return true if we accept this packet
@Override
public boolean accept(Stanza pin) {
if (pin instanceof IQ) {
IQ iq = (IQ) pin;
if (iq.getType().equals(IQ.Type.set)) {
if (iq instanceof Jingle) {
Jingle jin = (Jingle) pin;
if (jin.getAction().equals(JingleActionEnum.SESSION_INITIATE)) {
return true;
}
}
}
}
return false;
}
};
jingleSessionRequestListeners = new ArrayList<>();
// Start a packet listener for session initiation requests
connection.addAsyncStanzaListener(new StanzaListener() {
@Override
public void processStanza(Stanza packet) {
triggerSessionRequested((Jingle) packet);
}
}, initRequestFilter);
}
/**
* Disconnect all Jingle Sessions.
*/
public void disconnectAllSessions() {
List sessions = jingleSessions.subList(0, jingleSessions.size());
for (JingleSession jingleSession : sessions)
try {
jingleSession.terminate();
} catch (Exception e) {
LOGGER.log(Level.WARNING, "exception", e);
}
sessions.clear();
}
/**
* Activates the listenerJingles on a Jingle session request.
*
* @param initJin the stanza(/packet) that must be passed to the jingleSessionRequestListener.
*/
void triggerSessionRequested(Jingle initJin) {
JingleSessionRequestListener[] jingleSessionRequestListeners;
// Make a synchronized copy of the listenerJingles
synchronized (this.jingleSessionRequestListeners) {
jingleSessionRequestListeners = new JingleSessionRequestListener[this.jingleSessionRequestListeners.size()];
this.jingleSessionRequestListeners.toArray(jingleSessionRequestListeners);
}
// ... and let them know of the event
JingleSessionRequest request = new JingleSessionRequest(this, initJin);
for (int i = 0; i < jingleSessionRequestListeners.length; i++) {
jingleSessionRequestListeners[i].sessionRequested(request);
}
}
// Session creation
/**
* Creates an Jingle session to start a communication with another user.
*
* @param responder the fully qualified jabber ID with resource of the other
* user.
* @return The session on which the negotiation can be run.
*/
public JingleSession createOutgoingJingleSession(EntityFullJid responder) throws XMPPException {
JingleSession session = new JingleSession(connection, null, connection.getUser(), responder, jingleMediaManagers);
triggerSessionCreated(session);
return session;
}
/**
* Creates an Jingle session to start a communication with another user.
*
* @param responder the fully qualified jabber ID with resource of the other
* user.
* @return the session on which the negotiation can be run.
*/
// public OutgoingJingleSession createOutgoingJingleSession(String responder) throws XMPPException {
// if (this.getMediaManagers() == null) return null;
// return createOutgoingJingleSession(responder, this.getMediaManagers());
// }
/**
* When the session request is acceptable, this method should be invoked. It
* will create an JingleSession which allows the negotiation to procede.
*
* @param request the remote request that is being accepted.
* @return the session which manages the rest of the negotiation.
*/
public JingleSession createIncomingJingleSession(JingleSessionRequest request) throws XMPPException {
if (request == null) {
throw new NullPointerException("Received request cannot be null");
}
JingleSession session = new JingleSession(connection, request, request.getFrom(), connection.getUser(), jingleMediaManagers);
triggerSessionCreated(session);
return session;
}
/**
* When the session request is acceptable, this method should be invoked. It
* will create an JingleSession which allows the negotiation to procede.
* This method use JingleMediaManager to select the supported Payload types.
*
* @param request the remote request that is being accepted.
* @return the session which manages the rest of the negotiation.
*/
// IncomingJingleSession createIncomingJingleSession(JingleSessionRequest request) throws XMPPException {
// if (request == null) {
// throw new NullPointerException("JingleMediaManager is not defined");
// }
// if (jingleMediaManager != null)
// return createIncomingJingleSession(request, jingleMediaManager.getPayloads());
//
// return createIncomingJingleSession(request, null);
// }
/**
* Get a session with the informed JID. If no session is found, return null.
*
* @param jid
* @return the JingleSession
*/
public JingleSession getSession(String jid) {
for (JingleSession jingleSession : jingleSessions) {
if (jingleSession.getResponder().equals(jid)) {
return jingleSession;
}
}
return null;
}
}