1package eu.siacs.conversations.xmpp.jingle;
2
3import android.util.Base64;
4import android.util.Log;
5
6import com.google.common.base.Objects;
7import com.google.common.base.Optional;
8import com.google.common.base.Preconditions;
9import com.google.common.cache.Cache;
10import com.google.common.cache.CacheBuilder;
11import com.google.common.collect.Collections2;
12import com.google.common.collect.ComparisonChain;
13import com.google.common.collect.ImmutableSet;
14
15import java.lang.ref.WeakReference;
16import java.security.SecureRandom;
17import java.util.Collection;
18import java.util.Collections;
19import java.util.HashMap;
20import java.util.List;
21import java.util.Map;
22import java.util.Set;
23import java.util.concurrent.ConcurrentHashMap;
24import java.util.concurrent.Executors;
25import java.util.concurrent.ScheduledExecutorService;
26import java.util.concurrent.ScheduledFuture;
27import java.util.concurrent.TimeUnit;
28
29import eu.siacs.conversations.Config;
30import eu.siacs.conversations.entities.Account;
31import eu.siacs.conversations.entities.Contact;
32import eu.siacs.conversations.entities.Conversation;
33import eu.siacs.conversations.entities.Conversational;
34import eu.siacs.conversations.entities.Message;
35import eu.siacs.conversations.entities.RtpSessionStatus;
36import eu.siacs.conversations.entities.Transferable;
37import eu.siacs.conversations.services.AbstractConnectionManager;
38import eu.siacs.conversations.services.XmppConnectionService;
39import eu.siacs.conversations.xml.Element;
40import eu.siacs.conversations.xml.Namespace;
41import eu.siacs.conversations.xmpp.Jid;
42import eu.siacs.conversations.xmpp.OnIqPacketReceived;
43import eu.siacs.conversations.xmpp.jingle.stanzas.Content;
44import eu.siacs.conversations.xmpp.jingle.stanzas.FileTransferDescription;
45import eu.siacs.conversations.xmpp.jingle.stanzas.GenericDescription;
46import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
47import eu.siacs.conversations.xmpp.jingle.stanzas.Propose;
48import eu.siacs.conversations.xmpp.jingle.stanzas.Reason;
49import eu.siacs.conversations.xmpp.jingle.stanzas.RtpDescription;
50import eu.siacs.conversations.xmpp.stanzas.IqPacket;
51import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
52
53public class JingleConnectionManager extends AbstractConnectionManager {
54 static final ScheduledExecutorService SCHEDULED_EXECUTOR_SERVICE = Executors.newSingleThreadScheduledExecutor();
55 final ToneManager toneManager;
56 private final HashMap<RtpSessionProposal, DeviceDiscoveryState> rtpSessionProposals = new HashMap<>();
57 private final ConcurrentHashMap<AbstractJingleConnection.Id, AbstractJingleConnection> connections = new ConcurrentHashMap<>();
58
59 private final Cache<PersistableSessionId, TerminatedRtpSession> terminatedSessions = CacheBuilder.newBuilder()
60 .expireAfterWrite(24, TimeUnit.HOURS)
61 .build();
62
63 private HashMap<Jid, JingleCandidate> primaryCandidates = new HashMap<>();
64
65 public JingleConnectionManager(XmppConnectionService service) {
66 super(service);
67 this.toneManager = new ToneManager(service);
68 }
69
70 static String nextRandomId() {
71 final byte[] id = new byte[16];
72 new SecureRandom().nextBytes(id);
73 return Base64.encodeToString(id, Base64.NO_WRAP | Base64.NO_PADDING);
74 }
75
76 public void deliverPacket(final Account account, final JinglePacket packet) {
77 final String sessionId = packet.getSessionId();
78 if (sessionId == null) {
79 respondWithJingleError(account, packet, "unknown-session", "item-not-found", "cancel");
80 return;
81 }
82 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, packet);
83 final AbstractJingleConnection existingJingleConnection = connections.get(id);
84 if (existingJingleConnection != null) {
85 existingJingleConnection.deliverPacket(packet);
86 } else if (packet.getAction() == JinglePacket.Action.SESSION_INITIATE) {
87 final Jid from = packet.getFrom();
88 final Content content = packet.getJingleContent();
89 final String descriptionNamespace = content == null ? null : content.getDescriptionNamespace();
90 final AbstractJingleConnection connection;
91 if (FileTransferDescription.NAMESPACES.contains(descriptionNamespace)) {
92 connection = new JingleFileTransferConnection(this, id, from);
93 } else if (Namespace.JINGLE_APPS_RTP.equals(descriptionNamespace) && isUsingClearNet(account)) {
94 final boolean sessionEnded = this.terminatedSessions.asMap().containsKey(PersistableSessionId.of(id));
95 final boolean stranger = isWithStrangerAndStrangerNotificationsAreOff(account, id.with);
96 if (isBusy() || sessionEnded || stranger) {
97 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": rejected session with " + id.with + " because busy. sessionEnded=" + sessionEnded + ", stranger=" + stranger);
98 mXmppConnectionService.sendIqPacket(account, packet.generateResponse(IqPacket.TYPE.RESULT), null);
99 final JinglePacket sessionTermination = new JinglePacket(JinglePacket.Action.SESSION_TERMINATE, id.sessionId);
100 sessionTermination.setTo(id.with);
101 sessionTermination.setReason(Reason.BUSY, null);
102 mXmppConnectionService.sendIqPacket(account, sessionTermination, null);
103 return;
104 }
105 connection = new JingleRtpConnection(this, id, from);
106 } else {
107 respondWithJingleError(account, packet, "unsupported-info", "feature-not-implemented", "cancel");
108 return;
109 }
110 connections.put(id, connection);
111 mXmppConnectionService.updateConversationUi();
112 connection.deliverPacket(packet);
113 } else {
114 Log.d(Config.LOGTAG, "unable to route jingle packet: " + packet);
115 respondWithJingleError(account, packet, "unknown-session", "item-not-found", "cancel");
116 }
117 }
118
119 private boolean isUsingClearNet(final Account account) {
120 return !account.isOnion() && !mXmppConnectionService.useTorToConnect();
121 }
122
123 public boolean isBusy() {
124 if (mXmppConnectionService.isPhoneInCall()) {
125 return true;
126 }
127 for (AbstractJingleConnection connection : this.connections.values()) {
128 if (connection instanceof JingleRtpConnection) {
129 if (((JingleRtpConnection) connection).isTerminated()) {
130 continue;
131 }
132 return true;
133 }
134 }
135 synchronized (this.rtpSessionProposals) {
136 return this.rtpSessionProposals.containsValue(DeviceDiscoveryState.DISCOVERED) || this.rtpSessionProposals.containsValue(DeviceDiscoveryState.SEARCHING);
137 }
138 }
139
140 private Optional<RtpSessionProposal> findMatchingSessionProposal(final Account account, final Jid with, final Set<Media> media) {
141 synchronized (this.rtpSessionProposals) {
142 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry : this.rtpSessionProposals.entrySet()) {
143 final RtpSessionProposal proposal = entry.getKey();
144 final DeviceDiscoveryState state = entry.getValue();
145 final boolean openProposal = state == DeviceDiscoveryState.DISCOVERED || state == DeviceDiscoveryState.SEARCHING;
146 if (openProposal
147 && proposal.account == account
148 && proposal.with.equals(with.asBareJid())
149 && proposal.media.equals(media)) {
150 return Optional.of(proposal);
151 }
152 }
153 }
154 return Optional.absent();
155 }
156
157 private boolean hasMatchingRtpSession(final Account account, final Jid with, final Set<Media> media) {
158 for (AbstractJingleConnection connection : this.connections.values()) {
159 if (connection instanceof JingleRtpConnection) {
160 final JingleRtpConnection rtpConnection = (JingleRtpConnection) connection;
161 if (rtpConnection.isTerminated()) {
162 continue;
163 }
164 if (rtpConnection.getId().account == account
165 && rtpConnection.getId().with.asBareJid().equals(with.asBareJid())
166 && rtpConnection.getMedia().equals(media)) {
167 return true;
168 }
169 }
170 }
171 return false;
172 }
173
174 private boolean isWithStrangerAndStrangerNotificationsAreOff(final Account account, Jid with) {
175 final boolean notifyForStrangers = mXmppConnectionService.getNotificationService().notificationsFromStrangers();
176 if (notifyForStrangers) {
177 return false;
178 }
179 final Contact contact = account.getRoster().getContact(with);
180 return !contact.showInContactList();
181 }
182
183 ScheduledFuture<?> schedule(final Runnable runnable, final long delay, final TimeUnit timeUnit) {
184 return SCHEDULED_EXECUTOR_SERVICE.schedule(runnable, delay, timeUnit);
185 }
186
187 void respondWithJingleError(final Account account, final IqPacket original, String jingleCondition, String condition, String conditionType) {
188 final IqPacket response = original.generateResponse(IqPacket.TYPE.ERROR);
189 final Element error = response.addChild("error");
190 error.setAttribute("type", conditionType);
191 error.addChild(condition, "urn:ietf:params:xml:ns:xmpp-stanzas");
192 error.addChild(jingleCondition, "urn:xmpp:jingle:errors:1");
193 account.getXmppConnection().sendIqPacket(response, null);
194 }
195
196 public void deliverMessage(final Account account, final Jid to, final Jid from, final Element message, String remoteMsgId, String serverMsgId, long timestamp) {
197 Preconditions.checkArgument(Namespace.JINGLE_MESSAGE.equals(message.getNamespace()));
198 final String sessionId = message.getAttribute("id");
199 if (sessionId == null) {
200 return;
201 }
202 if ("accept".equals(message.getName())) {
203 for (AbstractJingleConnection connection : connections.values()) {
204 if (connection instanceof JingleRtpConnection) {
205 final JingleRtpConnection rtpConnection = (JingleRtpConnection) connection;
206 final AbstractJingleConnection.Id id = connection.getId();
207 if (id.account == account && id.sessionId.equals(sessionId)) {
208 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
209 return;
210 }
211 }
212 }
213 return;
214 }
215 final boolean fromSelf = from.asBareJid().equals(account.getJid().asBareJid());
216 final boolean addressedDirectly = to != null && to.equals(account.getJid());
217 final AbstractJingleConnection.Id id;
218 if (fromSelf) {
219 if (to != null && to.isFullJid()) {
220 id = AbstractJingleConnection.Id.of(account, to, sessionId);
221 } else {
222 return;
223 }
224 } else {
225 id = AbstractJingleConnection.Id.of(account, from, sessionId);
226 }
227 final AbstractJingleConnection existingJingleConnection = connections.get(id);
228 if (existingJingleConnection != null) {
229 if (existingJingleConnection instanceof JingleRtpConnection) {
230 ((JingleRtpConnection) existingJingleConnection).deliveryMessage(from, message, serverMsgId, timestamp);
231 } else {
232 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": " + existingJingleConnection.getClass().getName() + " does not support jingle messages");
233 }
234 return;
235 }
236
237 if (fromSelf) {
238 if ("proceed".equals(message.getName())) {
239 final Conversation c = mXmppConnectionService.findOrCreateConversation(account, id.with, false, false);
240 final Message previousBusy = c.findRtpSession(sessionId, Message.STATUS_RECEIVED);
241 if (previousBusy != null) {
242 previousBusy.setBody(new RtpSessionStatus(true, 0).toString());
243 if (serverMsgId != null) {
244 previousBusy.setServerMsgId(serverMsgId);
245 }
246 previousBusy.setTime(timestamp);
247 mXmppConnectionService.updateMessage(previousBusy, true);
248 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": updated previous busy because call got picked up by another device");
249 return;
250 }
251 }
252 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignore jingle message from self");
253 return;
254 }
255
256 if ("propose".equals(message.getName())) {
257 final Propose propose = Propose.upgrade(message);
258 final List<GenericDescription> descriptions = propose.getDescriptions();
259 final Collection<RtpDescription> rtpDescriptions = Collections2.transform(
260 Collections2.filter(descriptions, d -> d instanceof RtpDescription),
261 input -> (RtpDescription) input
262 );
263 if (rtpDescriptions.size() > 0 && rtpDescriptions.size() == descriptions.size() && isUsingClearNet(account)) {
264 final Collection<Media> media = Collections2.transform(rtpDescriptions, RtpDescription::getMedia);
265 if (media.contains(Media.UNKNOWN)) {
266 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": encountered unknown media in session proposal. " + propose);
267 return;
268 }
269 final Optional<RtpSessionProposal> matchingSessionProposal = findMatchingSessionProposal(account, id.with, ImmutableSet.copyOf(media));
270 if (matchingSessionProposal.isPresent()) {
271 final String ourSessionId = matchingSessionProposal.get().sessionId;
272 final String theirSessionId = id.sessionId;
273 if (ComparisonChain.start()
274 .compare(ourSessionId, theirSessionId)
275 .compare(account.getJid().toEscapedString(), id.with.toEscapedString())
276 .result() > 0) {
277 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": our session lost tie break. automatically accepting their session. winning Session=" + theirSessionId);
278 //TODO a retract for this reason should probably include some indication of tie break
279 retractSessionProposal(matchingSessionProposal.get());
280 final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, from);
281 this.connections.put(id, rtpConnection);
282 rtpConnection.setProposedMedia(ImmutableSet.copyOf(media));
283 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
284 } else {
285 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": our session won tie break. waiting for other party to accept. winningSession=" + ourSessionId);
286 }
287 return;
288 }
289 final boolean stranger = isWithStrangerAndStrangerNotificationsAreOff(account, id.with);
290 if (isBusy() || stranger) {
291 writeLogMissedIncoming(account, id.with.asBareJid(), id.sessionId, serverMsgId, timestamp);
292 if (stranger) {
293 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring call proposal from stranger " + id.with);
294 return;
295 }
296 final int activeDevices = account.activeDevicesWithRtpCapability();
297 Log.d(Config.LOGTAG, "active devices with rtp capability: " + activeDevices);
298 if (activeDevices == 0) {
299 final MessagePacket reject = mXmppConnectionService.getMessageGenerator().sessionReject(from, sessionId);
300 mXmppConnectionService.sendMessagePacket(account, reject);
301 } else {
302 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring proposal because busy on this device but there are other devices");
303 }
304 } else {
305 final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, from);
306 this.connections.put(id, rtpConnection);
307 rtpConnection.setProposedMedia(ImmutableSet.copyOf(media));
308 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
309 }
310 } else {
311 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to react to proposed session with " + rtpDescriptions.size() + " rtp descriptions of " + descriptions.size() + " total descriptions");
312 }
313 } else if (addressedDirectly && "proceed".equals(message.getName())) {
314 synchronized (rtpSessionProposals) {
315 final RtpSessionProposal proposal = getRtpSessionProposal(account, from.asBareJid(), sessionId);
316 if (proposal != null) {
317 rtpSessionProposals.remove(proposal);
318 final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, account.getJid());
319 rtpConnection.setProposedMedia(proposal.media);
320 this.connections.put(id, rtpConnection);
321 rtpConnection.transitionOrThrow(AbstractJingleConnection.State.PROPOSED);
322 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
323 } else {
324 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": no rtp session proposal found for " + from + " to deliver proceed");
325 if (remoteMsgId == null) {
326 return;
327 }
328 final MessagePacket errorMessage = new MessagePacket();
329 errorMessage.setTo(from);
330 errorMessage.setId(remoteMsgId);
331 errorMessage.setType(MessagePacket.TYPE_ERROR);
332 final Element error = errorMessage.addChild("error");
333 error.setAttribute("code", "404");
334 error.setAttribute("type", "cancel");
335 error.addChild("item-not-found", "urn:ietf:params:xml:ns:xmpp-stanzas");
336 mXmppConnectionService.sendMessagePacket(account, errorMessage);
337 }
338 }
339 } else if (addressedDirectly && "reject".equals(message.getName())) {
340 final RtpSessionProposal proposal = getRtpSessionProposal(account, from.asBareJid(), sessionId);
341 synchronized (rtpSessionProposals) {
342 if (proposal != null && rtpSessionProposals.remove(proposal) != null) {
343 writeLogMissedOutgoing(account, proposal.with, proposal.sessionId, serverMsgId, timestamp);
344 toneManager.transition(RtpEndUserState.DECLINED_OR_BUSY, proposal.media);
345 mXmppConnectionService.notifyJingleRtpConnectionUpdate(account, proposal.with, proposal.sessionId, RtpEndUserState.DECLINED_OR_BUSY);
346 } else {
347 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": no rtp session proposal found for " + from + " to deliver reject");
348 }
349 }
350 } else {
351 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": retrieved out of order jingle message"+message);
352 }
353
354 }
355
356 private RtpSessionProposal getRtpSessionProposal(final Account account, Jid from, String sessionId) {
357 for (RtpSessionProposal rtpSessionProposal : rtpSessionProposals.keySet()) {
358 if (rtpSessionProposal.sessionId.equals(sessionId) && rtpSessionProposal.with.equals(from) && rtpSessionProposal.account.getJid().equals(account.getJid())) {
359 return rtpSessionProposal;
360 }
361 }
362 return null;
363 }
364
365 private void writeLogMissedOutgoing(final Account account, Jid with, final String sessionId, String serverMsgId, long timestamp) {
366 final Conversation conversation = mXmppConnectionService.findOrCreateConversation(
367 account,
368 with.asBareJid(),
369 false,
370 false
371 );
372 final Message message = new Message(
373 conversation,
374 Message.STATUS_SEND,
375 Message.TYPE_RTP_SESSION,
376 sessionId
377 );
378 message.setBody(new RtpSessionStatus(false, 0).toString());
379 message.setServerMsgId(serverMsgId);
380 message.setTime(timestamp);
381 writeMessage(message);
382 }
383
384 private void writeLogMissedIncoming(final Account account, Jid with, final String sessionId, String serverMsgId, long timestamp) {
385 final Conversation conversation = mXmppConnectionService.findOrCreateConversation(
386 account,
387 with.asBareJid(),
388 false,
389 false
390 );
391 final Message message = new Message(
392 conversation,
393 Message.STATUS_RECEIVED,
394 Message.TYPE_RTP_SESSION,
395 sessionId
396 );
397 message.setBody(new RtpSessionStatus(false, 0).toString());
398 message.setServerMsgId(serverMsgId);
399 message.setTime(timestamp);
400 writeMessage(message);
401 }
402
403 private void writeMessage(final Message message) {
404 final Conversational conversational = message.getConversation();
405 if (conversational instanceof Conversation) {
406 ((Conversation) conversational).add(message);
407 mXmppConnectionService.databaseBackend.createMessage(message);
408 mXmppConnectionService.updateConversationUi();
409 } else {
410 throw new IllegalStateException("Somehow the conversation in a message was a stub");
411 }
412 }
413
414 public void startJingleFileTransfer(final Message message) {
415 Preconditions.checkArgument(message.isFileOrImage(), "Message is not of type file or image");
416 final Transferable old = message.getTransferable();
417 if (old != null) {
418 old.cancel();
419 }
420 final Account account = message.getConversation().getAccount();
421 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(message);
422 final JingleFileTransferConnection connection = new JingleFileTransferConnection(this, id, account.getJid());
423 mXmppConnectionService.markMessage(message, Message.STATUS_WAITING);
424 this.connections.put(id, connection);
425 connection.init(message);
426 }
427
428 public Optional<OngoingRtpSession> getOngoingRtpConnection(final Contact contact) {
429 for (final Map.Entry<AbstractJingleConnection.Id, AbstractJingleConnection> entry : this.connections.entrySet()) {
430 if (entry.getValue() instanceof JingleRtpConnection) {
431 final AbstractJingleConnection.Id id = entry.getKey();
432 if (id.account == contact.getAccount() && id.with.asBareJid().equals(contact.getJid().asBareJid())) {
433 return Optional.of(id);
434 }
435 }
436 }
437 synchronized (this.rtpSessionProposals) {
438 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry : this.rtpSessionProposals.entrySet()) {
439 RtpSessionProposal proposal = entry.getKey();
440 if (proposal.account == contact.getAccount() && contact.getJid().asBareJid().equals(proposal.with)) {
441 final DeviceDiscoveryState preexistingState = entry.getValue();
442 if (preexistingState != null && preexistingState != DeviceDiscoveryState.FAILED) {
443 return Optional.of(proposal);
444 }
445 }
446 }
447 }
448 return Optional.absent();
449 }
450
451 void finishConnection(final AbstractJingleConnection connection) {
452 this.connections.remove(connection.getId());
453 }
454
455 void finishConnectionOrThrow(final AbstractJingleConnection connection) {
456 final AbstractJingleConnection.Id id = connection.getId();
457 if (this.connections.remove(id) == null) {
458 throw new IllegalStateException(String.format("Unable to finish connection with id=%s", id.toString()));
459 }
460 }
461
462 public boolean fireJingleRtpConnectionStateUpdates() {
463 boolean firedUpdates = false;
464 for (final AbstractJingleConnection connection : this.connections.values()) {
465 if (connection instanceof JingleRtpConnection) {
466 final JingleRtpConnection jingleRtpConnection = (JingleRtpConnection) connection;
467 if (jingleRtpConnection.isTerminated()) {
468 continue;
469 }
470 jingleRtpConnection.fireStateUpdate();
471 firedUpdates = true;
472 }
473 }
474 return firedUpdates;
475 }
476
477 void getPrimaryCandidate(final Account account, final boolean initiator, final OnPrimaryCandidateFound listener) {
478 if (Config.DISABLE_PROXY_LOOKUP) {
479 listener.onPrimaryCandidateFound(false, null);
480 return;
481 }
482 if (!this.primaryCandidates.containsKey(account.getJid().asBareJid())) {
483 final Jid proxy = account.getXmppConnection().findDiscoItemByFeature(Namespace.BYTE_STREAMS);
484 if (proxy != null) {
485 IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
486 iq.setTo(proxy);
487 iq.query(Namespace.BYTE_STREAMS);
488 account.getXmppConnection().sendIqPacket(iq, new OnIqPacketReceived() {
489
490 @Override
491 public void onIqPacketReceived(Account account, IqPacket packet) {
492 final Element streamhost = packet.query().findChild("streamhost", Namespace.BYTE_STREAMS);
493 final String host = streamhost == null ? null : streamhost.getAttribute("host");
494 final String port = streamhost == null ? null : streamhost.getAttribute("port");
495 if (host != null && port != null) {
496 try {
497 JingleCandidate candidate = new JingleCandidate(nextRandomId(), true);
498 candidate.setHost(host);
499 candidate.setPort(Integer.parseInt(port));
500 candidate.setType(JingleCandidate.TYPE_PROXY);
501 candidate.setJid(proxy);
502 candidate.setPriority(655360 + (initiator ? 30 : 0));
503 primaryCandidates.put(account.getJid().asBareJid(), candidate);
504 listener.onPrimaryCandidateFound(true, candidate);
505 } catch (final NumberFormatException e) {
506 listener.onPrimaryCandidateFound(false, null);
507 }
508 } else {
509 listener.onPrimaryCandidateFound(false, null);
510 }
511 }
512 });
513 } else {
514 listener.onPrimaryCandidateFound(false, null);
515 }
516
517 } else {
518 listener.onPrimaryCandidateFound(true,
519 this.primaryCandidates.get(account.getJid().asBareJid()));
520 }
521 }
522
523 public void retractSessionProposal(final Account account, final Jid with) {
524 synchronized (this.rtpSessionProposals) {
525 RtpSessionProposal matchingProposal = null;
526 for (RtpSessionProposal proposal : this.rtpSessionProposals.keySet()) {
527 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
528 matchingProposal = proposal;
529 break;
530 }
531 }
532 if (matchingProposal != null) {
533 retractSessionProposal(matchingProposal);
534 }
535 }
536 }
537
538 private void retractSessionProposal(RtpSessionProposal rtpSessionProposal) {
539 final Account account = rtpSessionProposal.account;
540 toneManager.transition(RtpEndUserState.ENDED, rtpSessionProposal.media);
541 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": retracting rtp session proposal with " + rtpSessionProposal.with);
542 this.rtpSessionProposals.remove(rtpSessionProposal);
543 final MessagePacket messagePacket = mXmppConnectionService.getMessageGenerator().sessionRetract(rtpSessionProposal);
544 writeLogMissedOutgoing(account, rtpSessionProposal.with, rtpSessionProposal.sessionId, null, System.currentTimeMillis());
545 mXmppConnectionService.sendMessagePacket(account, messagePacket);
546 }
547
548 public String initializeRtpSession(final Account account, final Jid with, final Set<Media> media) {
549 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, with);
550 final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, account.getJid());
551 rtpConnection.setProposedMedia(media);
552 this.connections.put(id, rtpConnection);
553 rtpConnection.sendSessionInitiate();
554 return id.sessionId;
555 }
556
557 public void proposeJingleRtpSession(final Account account, final Jid with, final Set<Media> media) {
558 synchronized (this.rtpSessionProposals) {
559 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry : this.rtpSessionProposals.entrySet()) {
560 RtpSessionProposal proposal = entry.getKey();
561 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
562 final DeviceDiscoveryState preexistingState = entry.getValue();
563 if (preexistingState != null && preexistingState != DeviceDiscoveryState.FAILED) {
564 final RtpEndUserState endUserState = preexistingState.toEndUserState();
565 toneManager.transition(endUserState, media);
566 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
567 account,
568 with,
569 proposal.sessionId,
570 endUserState
571 );
572 return;
573 }
574 }
575 }
576 if (isBusy()) {
577 if (hasMatchingRtpSession(account, with, media)) {
578 Log.d(Config.LOGTAG, "ignoring request to propose jingle session because the other party already created one for us");
579 return;
580 }
581 throw new IllegalStateException("There is already a running RTP session. This should have been caught by the UI");
582 }
583 final RtpSessionProposal proposal = RtpSessionProposal.of(account, with.asBareJid(), media);
584 this.rtpSessionProposals.put(proposal, DeviceDiscoveryState.SEARCHING);
585 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
586 account,
587 proposal.with,
588 proposal.sessionId,
589 RtpEndUserState.FINDING_DEVICE
590 );
591 final MessagePacket messagePacket = mXmppConnectionService.getMessageGenerator().sessionProposal(proposal);
592 Log.d(Config.LOGTAG, messagePacket.toString());
593 mXmppConnectionService.sendMessagePacket(account, messagePacket);
594 }
595 }
596
597 public boolean hasMatchingProposal(final Account account, final Jid with) {
598 synchronized (this.rtpSessionProposals) {
599 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry : this.rtpSessionProposals.entrySet()) {
600 final RtpSessionProposal proposal = entry.getKey();
601 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
602 return true;
603 }
604 }
605 }
606 return false;
607 }
608
609 public void deliverIbbPacket(Account account, IqPacket packet) {
610 final String sid;
611 final Element payload;
612 if (packet.hasChild("open", Namespace.IBB)) {
613 payload = packet.findChild("open", Namespace.IBB);
614 sid = payload.getAttribute("sid");
615 } else if (packet.hasChild("data", Namespace.IBB)) {
616 payload = packet.findChild("data", Namespace.IBB);
617 sid = payload.getAttribute("sid");
618 } else if (packet.hasChild("close", Namespace.IBB)) {
619 payload = packet.findChild("close", Namespace.IBB);
620 sid = payload.getAttribute("sid");
621 } else {
622 payload = null;
623 sid = null;
624 }
625 if (sid != null) {
626 for (final AbstractJingleConnection connection : this.connections.values()) {
627 if (connection instanceof JingleFileTransferConnection) {
628 final JingleFileTransferConnection fileTransfer = (JingleFileTransferConnection) connection;
629 final JingleTransport transport = fileTransfer.getTransport();
630 if (transport instanceof JingleInBandTransport) {
631 final JingleInBandTransport inBandTransport = (JingleInBandTransport) transport;
632 if (inBandTransport.matches(account, sid)) {
633 inBandTransport.deliverPayload(packet, payload);
634 }
635 return;
636 }
637 }
638 }
639 }
640 Log.d(Config.LOGTAG, "unable to deliver ibb packet: " + packet.toString());
641 account.getXmppConnection().sendIqPacket(packet.generateResponse(IqPacket.TYPE.ERROR), null);
642 }
643
644 public void notifyRebound() {
645 for (final AbstractJingleConnection connection : this.connections.values()) {
646 connection.notifyRebound();
647 }
648 }
649
650 public WeakReference<JingleRtpConnection> findJingleRtpConnection(Account account, Jid with, String sessionId) {
651 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, with, sessionId);
652 final AbstractJingleConnection connection = connections.get(id);
653 if (connection instanceof JingleRtpConnection) {
654 return new WeakReference<>((JingleRtpConnection) connection);
655 }
656 return null;
657 }
658
659 public void updateProposedSessionDiscovered(Account account, Jid from, String sessionId, final DeviceDiscoveryState target) {
660 synchronized (this.rtpSessionProposals) {
661 final RtpSessionProposal sessionProposal = getRtpSessionProposal(account, from.asBareJid(), sessionId);
662 final DeviceDiscoveryState currentState = sessionProposal == null ? null : rtpSessionProposals.get(sessionProposal);
663 if (currentState == null) {
664 Log.d(Config.LOGTAG, "unable to find session proposal for session id " + sessionId);
665 return;
666 }
667 if (currentState == DeviceDiscoveryState.DISCOVERED) {
668 Log.d(Config.LOGTAG, "session proposal already at discovered. not going to fall back");
669 return;
670 }
671 this.rtpSessionProposals.put(sessionProposal, target);
672 final RtpEndUserState endUserState = target.toEndUserState();
673 toneManager.transition(endUserState, sessionProposal.media);
674 mXmppConnectionService.notifyJingleRtpConnectionUpdate(account, sessionProposal.with, sessionProposal.sessionId, endUserState);
675 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": flagging session " + sessionId + " as " + target);
676 }
677 }
678
679 public void rejectRtpSession(final String sessionId) {
680 for (final AbstractJingleConnection connection : this.connections.values()) {
681 if (connection.getId().sessionId.equals(sessionId)) {
682 if (connection instanceof JingleRtpConnection) {
683 ((JingleRtpConnection) connection).rejectCall();
684 }
685 }
686 }
687 }
688
689 public void endRtpSession(final String sessionId) {
690 for (final AbstractJingleConnection connection : this.connections.values()) {
691 if (connection.getId().sessionId.equals(sessionId)) {
692 if (connection instanceof JingleRtpConnection) {
693 ((JingleRtpConnection) connection).endCall();
694 }
695 }
696 }
697 }
698
699 public void failProceed(Account account, final Jid with, String sessionId) {
700 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, with, sessionId);
701 final AbstractJingleConnection existingJingleConnection = connections.get(id);
702 if (existingJingleConnection instanceof JingleRtpConnection) {
703 ((JingleRtpConnection) existingJingleConnection).deliverFailedProceed();
704 }
705 }
706
707 void ensureConnectionIsRegistered(final AbstractJingleConnection connection) {
708 if (connections.containsValue(connection)) {
709 return;
710 }
711 final IllegalStateException e = new IllegalStateException("JingleConnection has not been registered with connection manager");
712 Log.e(Config.LOGTAG, "ensureConnectionIsRegistered() failed. Going to throw", e);
713 throw e;
714 }
715
716 void setTerminalSessionState(AbstractJingleConnection.Id id, final RtpEndUserState state, final Set<Media> media) {
717 this.terminatedSessions.put(PersistableSessionId.of(id), new TerminatedRtpSession(state, media));
718 }
719
720 public TerminatedRtpSession getTerminalSessionState(final Jid with, final String sessionId) {
721 return this.terminatedSessions.getIfPresent(new PersistableSessionId(with, sessionId));
722 }
723
724 private static class PersistableSessionId {
725 private final Jid with;
726 private final String sessionId;
727
728 private PersistableSessionId(Jid with, String sessionId) {
729 this.with = with;
730 this.sessionId = sessionId;
731 }
732
733 public static PersistableSessionId of(AbstractJingleConnection.Id id) {
734 return new PersistableSessionId(id.with, id.sessionId);
735 }
736
737 @Override
738 public boolean equals(Object o) {
739 if (this == o) return true;
740 if (o == null || getClass() != o.getClass()) return false;
741 PersistableSessionId that = (PersistableSessionId) o;
742 return Objects.equal(with, that.with) &&
743 Objects.equal(sessionId, that.sessionId);
744 }
745
746 @Override
747 public int hashCode() {
748 return Objects.hashCode(with, sessionId);
749 }
750 }
751
752 public static class TerminatedRtpSession {
753 public final RtpEndUserState state;
754 public final Set<Media> media;
755
756 TerminatedRtpSession(RtpEndUserState state, Set<Media> media) {
757 this.state = state;
758 this.media = media;
759 }
760 }
761
762 public enum DeviceDiscoveryState {
763 SEARCHING, DISCOVERED, FAILED;
764
765 public RtpEndUserState toEndUserState() {
766 switch (this) {
767 case SEARCHING:
768 return RtpEndUserState.FINDING_DEVICE;
769 case DISCOVERED:
770 return RtpEndUserState.RINGING;
771 default:
772 return RtpEndUserState.CONNECTIVITY_ERROR;
773 }
774 }
775 }
776
777 public static class RtpSessionProposal implements OngoingRtpSession {
778 public final Jid with;
779 public final String sessionId;
780 public final Set<Media> media;
781 private final Account account;
782
783 private RtpSessionProposal(Account account, Jid with, String sessionId) {
784 this(account, with, sessionId, Collections.emptySet());
785 }
786
787 private RtpSessionProposal(Account account, Jid with, String sessionId, Set<Media> media) {
788 this.account = account;
789 this.with = with;
790 this.sessionId = sessionId;
791 this.media = media;
792 }
793
794 public static RtpSessionProposal of(Account account, Jid with, Set<Media> media) {
795 return new RtpSessionProposal(account, with, nextRandomId(), media);
796 }
797
798 @Override
799 public boolean equals(Object o) {
800 if (this == o) return true;
801 if (o == null || getClass() != o.getClass()) return false;
802 RtpSessionProposal proposal = (RtpSessionProposal) o;
803 return Objects.equal(account.getJid(), proposal.account.getJid()) &&
804 Objects.equal(with, proposal.with) &&
805 Objects.equal(sessionId, proposal.sessionId);
806 }
807
808 @Override
809 public int hashCode() {
810 return Objects.hashCode(account.getJid(), with, sessionId);
811 }
812
813 @Override
814 public Account getAccount() {
815 return account;
816 }
817
818 @Override
819 public Jid getWith() {
820 return with;
821 }
822
823 @Override
824 public String getSessionId() {
825 return sessionId;
826 }
827 }
828}