1package eu.siacs.conversations.xmpp.jingle;
2
3import android.util.Log;
4
5import com.google.common.base.Function;
6import com.google.common.collect.ImmutableList;
7import com.google.common.collect.ImmutableMap;
8import com.google.common.collect.Maps;
9
10import org.checkerframework.checker.nullness.compatqual.NullableDecl;
11import org.webrtc.AudioSource;
12import org.webrtc.AudioTrack;
13import org.webrtc.DataChannel;
14import org.webrtc.IceCandidate;
15import org.webrtc.MediaConstraints;
16import org.webrtc.MediaStream;
17import org.webrtc.PeerConnection;
18import org.webrtc.PeerConnectionFactory;
19import org.webrtc.RtpReceiver;
20import org.webrtc.SdpObserver;
21
22import java.util.Collection;
23import java.util.Collections;
24import java.util.Map;
25
26import eu.siacs.conversations.Config;
27import eu.siacs.conversations.xml.Element;
28import eu.siacs.conversations.xml.Namespace;
29import eu.siacs.conversations.xmpp.jingle.stanzas.Content;
30import eu.siacs.conversations.xmpp.jingle.stanzas.GenericDescription;
31import eu.siacs.conversations.xmpp.jingle.stanzas.GenericTransportInfo;
32import eu.siacs.conversations.xmpp.jingle.stanzas.IceUdpTransportInfo;
33import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
34import eu.siacs.conversations.xmpp.jingle.stanzas.RtpDescription;
35import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
36import rocks.xmpp.addr.Jid;
37
38public class JingleRtpConnection extends AbstractJingleConnection {
39
40 private static final Map<State, Collection<State>> VALID_TRANSITIONS;
41
42 static {
43 final ImmutableMap.Builder<State, Collection<State>> transitionBuilder = new ImmutableMap.Builder<>();
44 transitionBuilder.put(State.NULL, ImmutableList.of(State.PROPOSED, State.SESSION_INITIALIZED));
45 transitionBuilder.put(State.PROPOSED, ImmutableList.of(State.ACCEPTED, State.PROCEED));
46 transitionBuilder.put(State.PROCEED, ImmutableList.of(State.SESSION_INITIALIZED));
47 VALID_TRANSITIONS = transitionBuilder.build();
48 }
49
50 private State state = State.NULL;
51
52
53 public JingleRtpConnection(JingleConnectionManager jingleConnectionManager, Id id, Jid initiator) {
54 super(jingleConnectionManager, id, initiator);
55 }
56
57 @Override
58 void deliverPacket(final JinglePacket jinglePacket) {
59 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": packet delivered to JingleRtpConnection");
60 switch (jinglePacket.getAction()) {
61 case SESSION_INITIATE:
62 receiveSessionInitiate(jinglePacket);
63 break;
64 default:
65 Log.d(Config.LOGTAG, String.format("%s: received unhandled jingle action %s", id.account.getJid().asBareJid(), jinglePacket.getAction()));
66 break;
67 }
68 }
69
70 private void receiveSessionInitiate(final JinglePacket jinglePacket) {
71 if (isInitiator()) {
72 Log.d(Config.LOGTAG, String.format("%s: received session-initiate even though we were initiating", id.account.getJid().asBareJid()));
73 //TODO respond with out-of-order
74 return;
75 }
76 final Map<String, DescriptionTransport> contents;
77 try {
78 contents = DescriptionTransport.of(jinglePacket.getJingleContents());
79 } catch (IllegalArgumentException | NullPointerException e) {
80 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": improperly formatted contents", e);
81 return;
82 }
83 Log.d(Config.LOGTAG, "processing session-init with " + contents.size() + " contents");
84 final State oldState = this.state;
85 if (transition(State.SESSION_INITIALIZED)) {
86 if (oldState == State.PROCEED) {
87 processContents(contents);
88 sendSessionAccept();
89 } else {
90 //TODO start ringing
91 }
92 } else {
93 Log.d(Config.LOGTAG, String.format("%s: received session-initiate while in state %s", id.account.getJid().asBareJid(), state));
94 }
95 }
96
97 private void processContents(final Map<String, DescriptionTransport> contents) {
98 for (Map.Entry<String, DescriptionTransport> content : contents.entrySet()) {
99 final DescriptionTransport descriptionTransport = content.getValue();
100 final RtpDescription rtpDescription = descriptionTransport.description;
101 Log.d(Config.LOGTAG, "receive content with name " + content.getKey() + " and media=" + rtpDescription.getMedia());
102 for (RtpDescription.PayloadType payloadType : rtpDescription.getPayloadTypes()) {
103 Log.d(Config.LOGTAG, "payload type: " + payloadType.toString());
104 }
105 for (RtpDescription.RtpHeaderExtension extension : rtpDescription.getHeaderExtensions()) {
106 Log.d(Config.LOGTAG, "extension: " + extension.toString());
107 }
108 final IceUdpTransportInfo iceUdpTransportInfo = descriptionTransport.transport;
109 Log.d(Config.LOGTAG, "transport: " + descriptionTransport.transport);
110 Log.d(Config.LOGTAG, "fingerprint " + iceUdpTransportInfo.getFingerprint());
111 }
112 }
113
114 void deliveryMessage(final Jid from, final Element message) {
115 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": delivered message to JingleRtpConnection " + message);
116 switch (message.getName()) {
117 case "propose":
118 receivePropose(from, message);
119 break;
120 case "proceed":
121 receiveProceed(from, message);
122 default:
123 break;
124 }
125 }
126
127 private void receivePropose(final Jid from, final Element propose) {
128 final boolean originatedFromMyself = from.asBareJid().equals(id.account.getJid().asBareJid());
129 if (originatedFromMyself) {
130 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": saw proposal from mysql. ignoring");
131 } else if (transition(State.PROPOSED)) {
132 //TODO start ringing or something
133 pickUpCall();
134 } else {
135 Log.d(Config.LOGTAG, id.account.getJid() + ": ignoring session proposal because already in " + state);
136 }
137 }
138
139 private void receiveProceed(final Jid from, final Element proceed) {
140 if (from.equals(id.with)) {
141 if (isInitiator()) {
142 if (transition(State.PROCEED)) {
143 this.sendSessionInitiate();
144 } else {
145 Log.d(Config.LOGTAG, String.format("%s: ignoring proceed because already in %s", id.account.getJid().asBareJid(), this.state));
146 }
147 } else {
148 Log.d(Config.LOGTAG, String.format("%s: ignoring proceed because we were not initializing", id.account.getJid().asBareJid()));
149 }
150 } else {
151 Log.d(Config.LOGTAG, String.format("%s: ignoring proceed from %s. was expected from %s", id.account.getJid().asBareJid(), from, id.with));
152 }
153 }
154
155 private void sendSessionInitiate() {
156 setupWebRTC();
157 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": sending session-initiate");
158 }
159
160 private void sendSessionAccept() {
161 Log.d(Config.LOGTAG, "sending session-accept");
162 }
163
164 public void pickUpCall() {
165 switch (this.state) {
166 case PROPOSED:
167 pickupCallFromProposed();
168 break;
169 case SESSION_INITIALIZED:
170 pickupCallFromSessionInitialized();
171 break;
172 default:
173 throw new IllegalStateException("Can not pick up call from " + this.state);
174 }
175 }
176
177 private void setupWebRTC() {
178 PeerConnectionFactory.initialize(
179 PeerConnectionFactory.InitializationOptions.builder(xmppConnectionService).createInitializationOptions()
180 );
181 final PeerConnectionFactory.Options options = new PeerConnectionFactory.Options();
182 PeerConnectionFactory peerConnectionFactory = PeerConnectionFactory.builder().createPeerConnectionFactory();
183
184 final AudioSource audioSource = peerConnectionFactory.createAudioSource(new MediaConstraints());
185
186 final AudioTrack audioTrack = peerConnectionFactory.createAudioTrack("my-audio-track", audioSource);
187 final MediaStream stream = peerConnectionFactory.createLocalMediaStream("my-media-stream");
188 stream.addTrack(audioTrack);
189
190
191 PeerConnection peer = peerConnectionFactory.createPeerConnection(Collections.emptyList(), new PeerConnection.Observer() {
192 @Override
193 public void onSignalingChange(PeerConnection.SignalingState signalingState) {
194
195 }
196
197 @Override
198 public void onIceConnectionChange(PeerConnection.IceConnectionState iceConnectionState) {
199
200 }
201
202 @Override
203 public void onIceConnectionReceivingChange(boolean b) {
204
205 }
206
207 @Override
208 public void onIceGatheringChange(PeerConnection.IceGatheringState iceGatheringState) {
209
210 }
211
212 @Override
213 public void onIceCandidate(IceCandidate iceCandidate) {
214
215 }
216
217 @Override
218 public void onIceCandidatesRemoved(IceCandidate[] iceCandidates) {
219
220 }
221
222 @Override
223 public void onAddStream(MediaStream mediaStream) {
224
225 }
226
227 @Override
228 public void onRemoveStream(MediaStream mediaStream) {
229
230 }
231
232 @Override
233 public void onDataChannel(DataChannel dataChannel) {
234
235 }
236
237 @Override
238 public void onRenegotiationNeeded() {
239
240 }
241
242 @Override
243 public void onAddTrack(RtpReceiver rtpReceiver, MediaStream[] mediaStreams) {
244
245 }
246 });
247
248 peer.addStream(stream);
249
250 peer.createOffer(new SdpObserver() {
251
252 @Override
253 public void onCreateSuccess(org.webrtc.SessionDescription description) {
254 final SessionDescription sessionDescription = SessionDescription.parse(description.description);
255 Log.d(Config.LOGTAG,"description: "+description.description);
256 for (SessionDescription.Media media : sessionDescription.media) {
257 Log.d(Config.LOGTAG, RtpDescription.of(media).toString());
258 }
259 Log.d(Config.LOGTAG, sessionDescription.toString());
260 }
261
262 @Override
263 public void onSetSuccess() {
264
265 }
266
267 @Override
268 public void onCreateFailure(String s) {
269
270 }
271
272 @Override
273 public void onSetFailure(String s) {
274
275 }
276 }, new MediaConstraints());
277 }
278
279 private void pickupCallFromProposed() {
280 transitionOrThrow(State.PROCEED);
281 final MessagePacket messagePacket = new MessagePacket();
282 messagePacket.setTo(id.with);
283 //Note that Movim needs 'accept', correct is 'proceed' https://github.com/movim/movim/issues/916
284 messagePacket.addChild("proceed", Namespace.JINGLE_MESSAGE).setAttribute("id", id.sessionId);
285 Log.d(Config.LOGTAG, messagePacket.toString());
286 xmppConnectionService.sendMessagePacket(id.account, messagePacket);
287 }
288
289 private void pickupCallFromSessionInitialized() {
290
291 }
292
293 private synchronized boolean transition(final State target) {
294 final Collection<State> validTransitions = VALID_TRANSITIONS.get(this.state);
295 if (validTransitions != null && validTransitions.contains(target)) {
296 this.state = target;
297 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": transitioned into " + target);
298 return true;
299 } else {
300 return false;
301 }
302 }
303
304 public void transitionOrThrow(final State target) {
305 if (!transition(target)) {
306 throw new IllegalStateException(String.format("Unable to transition from %s to %s", this.state, target));
307 }
308 }
309
310 public static class DescriptionTransport {
311 private final RtpDescription description;
312 private final IceUdpTransportInfo transport;
313
314 public DescriptionTransport(final RtpDescription description, final IceUdpTransportInfo transport) {
315 this.description = description;
316 this.transport = transport;
317 }
318
319 public static DescriptionTransport of(final Content content) {
320 final GenericDescription description = content.getDescription();
321 final GenericTransportInfo transportInfo = content.getTransport();
322 final RtpDescription rtpDescription;
323 final IceUdpTransportInfo iceUdpTransportInfo;
324 if (description instanceof RtpDescription) {
325 rtpDescription = (RtpDescription) description;
326 } else {
327 Log.d(Config.LOGTAG, "description was " + description);
328 throw new IllegalArgumentException("Content does not contain RtpDescription");
329 }
330 if (transportInfo instanceof IceUdpTransportInfo) {
331 iceUdpTransportInfo = (IceUdpTransportInfo) transportInfo;
332 } else {
333 throw new IllegalArgumentException("Content does not contain ICE-UDP transport");
334 }
335 return new DescriptionTransport(rtpDescription, iceUdpTransportInfo);
336 }
337
338 public static Map<String, DescriptionTransport> of(final Map<String, Content> contents) {
339 return ImmutableMap.copyOf(Maps.transformValues(contents, new Function<Content, DescriptionTransport>() {
340 @NullableDecl
341 @Override
342 public DescriptionTransport apply(@NullableDecl Content content) {
343 return content == null ? null : of(content);
344 }
345 }));
346 }
347 }
348
349}