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 eu.siacs.conversations.Config;
16import eu.siacs.conversations.entities.Account;
17import eu.siacs.conversations.entities.Contact;
18import eu.siacs.conversations.entities.Conversation;
19import eu.siacs.conversations.entities.Conversational;
20import eu.siacs.conversations.entities.Message;
21import eu.siacs.conversations.entities.RtpSessionStatus;
22import eu.siacs.conversations.entities.Transferable;
23import eu.siacs.conversations.services.AbstractConnectionManager;
24import eu.siacs.conversations.services.CallIntegration;
25import eu.siacs.conversations.services.CallIntegrationConnectionService;
26import eu.siacs.conversations.services.XmppConnectionService;
27import eu.siacs.conversations.xml.Element;
28import eu.siacs.conversations.xml.Namespace;
29import eu.siacs.conversations.xmpp.Jid;
30import eu.siacs.conversations.xmpp.XmppConnection;
31import eu.siacs.conversations.xmpp.jingle.stanzas.Content;
32import eu.siacs.conversations.xmpp.jingle.stanzas.GenericDescription;
33import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
34import eu.siacs.conversations.xmpp.jingle.stanzas.Propose;
35import eu.siacs.conversations.xmpp.jingle.stanzas.Reason;
36import eu.siacs.conversations.xmpp.jingle.stanzas.RtpDescription;
37import eu.siacs.conversations.xmpp.jingle.transports.InbandBytestreamsTransport;
38import eu.siacs.conversations.xmpp.jingle.transports.Transport;
39import eu.siacs.conversations.xmpp.stanzas.IqPacket;
40import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
41
42import java.lang.ref.WeakReference;
43import java.security.SecureRandom;
44import java.util.Collection;
45import java.util.HashMap;
46import java.util.List;
47import java.util.Map;
48import java.util.Set;
49import java.util.concurrent.ConcurrentHashMap;
50import java.util.concurrent.Executors;
51import java.util.concurrent.ScheduledExecutorService;
52import java.util.concurrent.ScheduledFuture;
53import java.util.concurrent.TimeUnit;
54
55public class JingleConnectionManager extends AbstractConnectionManager {
56 static final ScheduledExecutorService SCHEDULED_EXECUTOR_SERVICE =
57 Executors.newSingleThreadScheduledExecutor();
58 final ToneManager toneManager;
59 private final HashMap<RtpSessionProposal, DeviceDiscoveryState> rtpSessionProposals =
60 new HashMap<>();
61 private final ConcurrentHashMap<AbstractJingleConnection.Id, AbstractJingleConnection>
62 connections = new ConcurrentHashMap<>();
63
64 private final Cache<PersistableSessionId, TerminatedRtpSession> terminatedSessions =
65 CacheBuilder.newBuilder().expireAfterWrite(24, TimeUnit.HOURS).build();
66
67 public JingleConnectionManager(XmppConnectionService service) {
68 super(service);
69 this.toneManager = new ToneManager(service);
70 }
71
72 static String nextRandomId() {
73 final byte[] id = new byte[16];
74 new SecureRandom().nextBytes(id);
75 return Base64.encodeToString(id, Base64.NO_WRAP | Base64.NO_PADDING | Base64.URL_SAFE);
76 }
77
78 public void deliverPacket(final Account account, final JinglePacket packet) {
79 final String sessionId = packet.getSessionId();
80 if (sessionId == null) {
81 respondWithJingleError(account, packet, "unknown-session", "item-not-found", "cancel");
82 return;
83 }
84 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, packet);
85 final AbstractJingleConnection existingJingleConnection = connections.get(id);
86 if (existingJingleConnection != null) {
87 existingJingleConnection.deliverPacket(packet);
88 } else if (packet.getAction() == JinglePacket.Action.SESSION_INITIATE) {
89 final Jid from = packet.getFrom();
90 final Content content = packet.getJingleContent();
91 final String descriptionNamespace =
92 content == null ? null : content.getDescriptionNamespace();
93 final AbstractJingleConnection connection;
94 if (Namespace.JINGLE_APPS_FILE_TRANSFER.equals(descriptionNamespace)) {
95 connection = new JingleFileTransferConnection(this, id, from);
96 } else if (Namespace.JINGLE_APPS_RTP.equals(descriptionNamespace)
97 && isUsingClearNet(account)) {
98 final boolean sessionEnded =
99 this.terminatedSessions.asMap().containsKey(PersistableSessionId.of(id));
100 final boolean stranger =
101 isWithStrangerAndStrangerNotificationsAreOff(account, id.with);
102 final boolean busy = isBusy();
103 if (busy || sessionEnded || stranger) {
104 Log.d(
105 Config.LOGTAG,
106 id.account.getJid().asBareJid()
107 + ": rejected session with "
108 + id.with
109 + " because busy. sessionEnded="
110 + sessionEnded
111 + ", stranger="
112 + stranger);
113 mXmppConnectionService.sendIqPacket(
114 account, packet.generateResponse(IqPacket.TYPE.RESULT), null);
115 final JinglePacket sessionTermination =
116 new JinglePacket(JinglePacket.Action.SESSION_TERMINATE, id.sessionId);
117 sessionTermination.setTo(id.with);
118 sessionTermination.setReason(Reason.BUSY, null);
119 mXmppConnectionService.sendIqPacket(account, sessionTermination, null);
120 if (busy || stranger) {
121 writeLogMissedIncoming(
122 account,
123 id.with,
124 id.sessionId,
125 null,
126 System.currentTimeMillis(),
127 stranger);
128 }
129 return;
130 }
131 connection = new JingleRtpConnection(this, id, from);
132 } else {
133 respondWithJingleError(
134 account, packet, "unsupported-info", "feature-not-implemented", "cancel");
135 return;
136 }
137 connections.put(id, connection);
138
139 CallIntegrationConnectionService.addNewIncomingCall(getXmppConnectionService(), id);
140
141 mXmppConnectionService.updateConversationUi();
142 connection.deliverPacket(packet);
143 } else {
144 Log.d(Config.LOGTAG, "unable to route jingle packet: " + packet);
145 respondWithJingleError(account, packet, "unknown-session", "item-not-found", "cancel");
146 }
147 }
148
149 private boolean isUsingClearNet(final Account account) {
150 return !account.isOnion() && !mXmppConnectionService.useTorToConnect();
151 }
152
153 public boolean isBusy() {
154 for (AbstractJingleConnection connection : this.connections.values()) {
155 if (connection instanceof JingleRtpConnection) {
156 if (connection.isTerminated()) {
157 continue;
158 }
159 return true;
160 }
161 }
162 synchronized (this.rtpSessionProposals) {
163 return this.rtpSessionProposals.containsValue(DeviceDiscoveryState.DISCOVERED)
164 || this.rtpSessionProposals.containsValue(DeviceDiscoveryState.SEARCHING)
165 || this.rtpSessionProposals.containsValue(
166 DeviceDiscoveryState.SEARCHING_ACKNOWLEDGED);
167 }
168 }
169
170 public boolean hasJingleRtpConnection(final Account account) {
171 for (AbstractJingleConnection connection : this.connections.values()) {
172 if (connection instanceof JingleRtpConnection rtpConnection) {
173 if (rtpConnection.isTerminated()) {
174 continue;
175 }
176 if (rtpConnection.id.account == account) {
177 return true;
178 }
179 }
180 }
181 return false;
182 }
183
184 private Optional<RtpSessionProposal> findMatchingSessionProposal(
185 final Account account, final Jid with, final Set<Media> media) {
186 synchronized (this.rtpSessionProposals) {
187 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry :
188 this.rtpSessionProposals.entrySet()) {
189 final RtpSessionProposal proposal = entry.getKey();
190 final DeviceDiscoveryState state = entry.getValue();
191 final boolean openProposal =
192 state == DeviceDiscoveryState.DISCOVERED
193 || state == DeviceDiscoveryState.SEARCHING
194 || state == DeviceDiscoveryState.SEARCHING_ACKNOWLEDGED;
195 if (openProposal
196 && proposal.account == account
197 && proposal.with.equals(with.asBareJid())
198 && proposal.media.equals(media)) {
199 return Optional.of(proposal);
200 }
201 }
202 }
203 return Optional.absent();
204 }
205
206 private boolean hasMatchingRtpSession(
207 final Account account, final Jid with, final Set<Media> media) {
208 for (AbstractJingleConnection connection : this.connections.values()) {
209 if (connection instanceof JingleRtpConnection rtpConnection) {
210 if (rtpConnection.isTerminated()) {
211 continue;
212 }
213 if (rtpConnection.getId().account == account
214 && rtpConnection.getId().with.asBareJid().equals(with.asBareJid())
215 && rtpConnection.getMedia().equals(media)) {
216 return true;
217 }
218 }
219 }
220 return false;
221 }
222
223 private boolean isWithStrangerAndStrangerNotificationsAreOff(final Account account, Jid with) {
224 final boolean notifyForStrangers =
225 mXmppConnectionService.getNotificationService().notificationsFromStrangers();
226 if (notifyForStrangers) {
227 return false;
228 }
229 final Contact contact = account.getRoster().getContact(with);
230 return !contact.showInContactList();
231 }
232
233 ScheduledFuture<?> schedule(
234 final Runnable runnable, final long delay, final TimeUnit timeUnit) {
235 return SCHEDULED_EXECUTOR_SERVICE.schedule(runnable, delay, timeUnit);
236 }
237
238 void respondWithJingleError(
239 final Account account,
240 final IqPacket original,
241 String jingleCondition,
242 String condition,
243 String conditionType) {
244 final IqPacket response = original.generateResponse(IqPacket.TYPE.ERROR);
245 final Element error = response.addChild("error");
246 error.setAttribute("type", conditionType);
247 error.addChild(condition, "urn:ietf:params:xml:ns:xmpp-stanzas");
248 if (jingleCondition != null) {
249 error.addChild(jingleCondition, Namespace.JINGLE_ERRORS);
250 }
251 account.getXmppConnection().sendIqPacket(response, null);
252 }
253
254 public void deliverMessage(
255 final Account account,
256 final Jid to,
257 final Jid from,
258 final Element message,
259 String remoteMsgId,
260 String serverMsgId,
261 long timestamp) {
262 Preconditions.checkArgument(Namespace.JINGLE_MESSAGE.equals(message.getNamespace()));
263 final String sessionId = message.getAttribute("id");
264 if (sessionId == null) {
265 return;
266 }
267 if ("accept".equals(message.getName())) {
268 for (AbstractJingleConnection connection : connections.values()) {
269 if (connection instanceof JingleRtpConnection rtpConnection) {
270 final AbstractJingleConnection.Id id = connection.getId();
271 if (id.account == account && id.sessionId.equals(sessionId)) {
272 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
273 return;
274 }
275 }
276 }
277 return;
278 }
279 final boolean fromSelf = from.asBareJid().equals(account.getJid().asBareJid());
280 // XEP version 0.6.0 sends proceed, reject, ringing to bare jid
281 final boolean addressedDirectly = to != null && to.equals(account.getJid());
282 final AbstractJingleConnection.Id id;
283 if (fromSelf) {
284 if (to != null && to.isFullJid()) {
285 id = AbstractJingleConnection.Id.of(account, to, sessionId);
286 } else {
287 return;
288 }
289 } else {
290 id = AbstractJingleConnection.Id.of(account, from, sessionId);
291 }
292 final AbstractJingleConnection existingJingleConnection = connections.get(id);
293 if (existingJingleConnection != null) {
294 if (existingJingleConnection instanceof JingleRtpConnection) {
295 ((JingleRtpConnection) existingJingleConnection)
296 .deliveryMessage(from, message, serverMsgId, timestamp);
297 } else {
298 Log.d(
299 Config.LOGTAG,
300 account.getJid().asBareJid()
301 + ": "
302 + existingJingleConnection.getClass().getName()
303 + " does not support jingle messages");
304 }
305 return;
306 }
307
308 if (fromSelf) {
309 if ("proceed".equals(message.getName())) {
310 final Conversation c =
311 mXmppConnectionService.findOrCreateConversation(
312 account, id.with, false, false);
313 final Message previousBusy = c.findRtpSession(sessionId, Message.STATUS_RECEIVED);
314 if (previousBusy != null) {
315 previousBusy.setBody(new RtpSessionStatus(true, 0).toString());
316 if (serverMsgId != null) {
317 previousBusy.setServerMsgId(serverMsgId);
318 }
319 previousBusy.setTime(timestamp);
320 mXmppConnectionService.updateMessage(previousBusy, true);
321 Log.d(
322 Config.LOGTAG,
323 id.account.getJid().asBareJid()
324 + ": updated previous busy because call got picked up by another device");
325 mXmppConnectionService.getNotificationService().clearMissedCall(previousBusy);
326 return;
327 }
328 }
329 // TODO handle reject for cases where we don’t have carbon copies (normally reject is to
330 // be sent to own bare jid as well)
331 Log.d(
332 Config.LOGTAG,
333 account.getJid().asBareJid() + ": ignore jingle message from self");
334 return;
335 }
336
337 if ("propose".equals(message.getName())) {
338 final Propose propose = Propose.upgrade(message);
339 final List<GenericDescription> descriptions = propose.getDescriptions();
340 final Collection<RtpDescription> rtpDescriptions =
341 Collections2.transform(
342 Collections2.filter(descriptions, d -> d instanceof RtpDescription),
343 input -> (RtpDescription) input);
344 if (rtpDescriptions.size() > 0
345 && rtpDescriptions.size() == descriptions.size()
346 && isUsingClearNet(account)) {
347 final Collection<Media> media =
348 Collections2.transform(rtpDescriptions, RtpDescription::getMedia);
349 if (media.contains(Media.UNKNOWN)) {
350 Log.d(
351 Config.LOGTAG,
352 account.getJid().asBareJid()
353 + ": encountered unknown media in session proposal. "
354 + propose);
355 return;
356 }
357 final Optional<RtpSessionProposal> matchingSessionProposal =
358 findMatchingSessionProposal(account, id.with, ImmutableSet.copyOf(media));
359 if (matchingSessionProposal.isPresent()) {
360 final String ourSessionId = matchingSessionProposal.get().sessionId;
361 final String theirSessionId = id.sessionId;
362 if (ComparisonChain.start()
363 .compare(ourSessionId, theirSessionId)
364 .compare(
365 account.getJid().toEscapedString(),
366 id.with.toEscapedString())
367 .result()
368 > 0) {
369 Log.d(
370 Config.LOGTAG,
371 account.getJid().asBareJid()
372 + ": our session lost tie break. automatically accepting their session. winning Session="
373 + theirSessionId);
374 // TODO a retract for this reason should probably include some indication of
375 // tie break
376 retractSessionProposal(matchingSessionProposal.get());
377 final JingleRtpConnection rtpConnection =
378 new JingleRtpConnection(this, id, from);
379 this.connections.put(id, rtpConnection);
380 rtpConnection.setProposedMedia(ImmutableSet.copyOf(media));
381 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
382
383 CallIntegrationConnectionService.addNewIncomingCall(
384 getXmppConnectionService(), id);
385 // TODO actually do the automatic accept?!
386 } else {
387 Log.d(
388 Config.LOGTAG,
389 account.getJid().asBareJid()
390 + ": our session won tie break. waiting for other party to accept. winningSession="
391 + ourSessionId);
392 // TODO reject their session with <tie-break/>?
393 }
394 return;
395 }
396 final boolean stranger =
397 isWithStrangerAndStrangerNotificationsAreOff(account, id.with);
398 if (isBusy() || stranger) {
399 writeLogMissedIncoming(
400 account,
401 id.with.asBareJid(),
402 id.sessionId,
403 serverMsgId,
404 timestamp,
405 stranger);
406 if (stranger) {
407 Log.d(
408 Config.LOGTAG,
409 id.account.getJid().asBareJid()
410 + ": ignoring call proposal from stranger "
411 + id.with);
412 return;
413 }
414 final int activeDevices = account.activeDevicesWithRtpCapability();
415 Log.d(Config.LOGTAG, "active devices with rtp capability: " + activeDevices);
416 if (activeDevices == 0) {
417 final MessagePacket reject =
418 mXmppConnectionService
419 .getMessageGenerator()
420 .sessionReject(from, sessionId);
421 mXmppConnectionService.sendMessagePacket(account, reject);
422 } else {
423 Log.d(
424 Config.LOGTAG,
425 id.account.getJid().asBareJid()
426 + ": ignoring proposal because busy on this device but there are other devices");
427 }
428 } else {
429 final JingleRtpConnection rtpConnection =
430 new JingleRtpConnection(this, id, from);
431 this.connections.put(id, rtpConnection);
432 rtpConnection.setProposedMedia(ImmutableSet.copyOf(media));
433 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
434
435 CallIntegrationConnectionService.addNewIncomingCall(
436 getXmppConnectionService(), id);
437 }
438 } else {
439 Log.d(
440 Config.LOGTAG,
441 account.getJid().asBareJid()
442 + ": unable to react to proposed session with "
443 + rtpDescriptions.size()
444 + " rtp descriptions of "
445 + descriptions.size()
446 + " total descriptions");
447 }
448 } else if (addressedDirectly && "proceed".equals(message.getName())) {
449 synchronized (rtpSessionProposals) {
450 final RtpSessionProposal proposal =
451 getRtpSessionProposal(account, from.asBareJid(), sessionId);
452 if (proposal != null) {
453 rtpSessionProposals.remove(proposal);
454 final JingleRtpConnection rtpConnection =
455 new JingleRtpConnection(
456 this, id, account.getJid(), proposal.callIntegration);
457 rtpConnection.setProposedMedia(proposal.media);
458 this.connections.put(id, rtpConnection);
459 rtpConnection.transitionOrThrow(AbstractJingleConnection.State.PROPOSED);
460 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
461 } else {
462 Log.d(
463 Config.LOGTAG,
464 account.getJid().asBareJid()
465 + ": no rtp session ("
466 + sessionId
467 + ") proposal found for "
468 + from
469 + " to deliver proceed");
470 if (remoteMsgId == null) {
471 return;
472 }
473 final MessagePacket errorMessage = new MessagePacket();
474 errorMessage.setTo(from);
475 errorMessage.setId(remoteMsgId);
476 errorMessage.setType(MessagePacket.TYPE_ERROR);
477 final Element error = errorMessage.addChild("error");
478 error.setAttribute("code", "404");
479 error.setAttribute("type", "cancel");
480 error.addChild("item-not-found", "urn:ietf:params:xml:ns:xmpp-stanzas");
481 mXmppConnectionService.sendMessagePacket(account, errorMessage);
482 }
483 }
484 } else if (addressedDirectly && "reject".equals(message.getName())) {
485 final RtpSessionProposal proposal =
486 getRtpSessionProposal(account, from.asBareJid(), sessionId);
487 synchronized (rtpSessionProposals) {
488 if (proposal != null && rtpSessionProposals.remove(proposal) != null) {
489 proposal.callIntegration.busy();
490 writeLogMissedOutgoing(
491 account, proposal.with, proposal.sessionId, serverMsgId, timestamp);
492 toneManager.transition(RtpEndUserState.DECLINED_OR_BUSY, proposal.media);
493 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
494 account,
495 proposal.with,
496 proposal.sessionId,
497 RtpEndUserState.DECLINED_OR_BUSY);
498 } else {
499 Log.d(
500 Config.LOGTAG,
501 account.getJid().asBareJid()
502 + ": no rtp session proposal found for "
503 + from
504 + " to deliver reject");
505 }
506 }
507 } else if (addressedDirectly && "ringing".equals(message.getName())) {
508 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": " + from + " started ringing");
509 updateProposedSessionDiscovered(
510 account, from, sessionId, DeviceDiscoveryState.DISCOVERED);
511 } else {
512 Log.d(
513 Config.LOGTAG,
514 account.getJid()
515 + ": retrieved out of order jingle message from "
516 + from
517 + message
518 + ", addressedDirectly="
519 + addressedDirectly);
520 }
521 }
522
523 private RtpSessionProposal getRtpSessionProposal(
524 final Account account, Jid from, String sessionId) {
525 for (RtpSessionProposal rtpSessionProposal : rtpSessionProposals.keySet()) {
526 if (rtpSessionProposal.sessionId.equals(sessionId)
527 && rtpSessionProposal.with.equals(from)
528 && rtpSessionProposal.account.getJid().equals(account.getJid())) {
529 return rtpSessionProposal;
530 }
531 }
532 return null;
533 }
534
535 private void writeLogMissedOutgoing(
536 final Account account,
537 Jid with,
538 final String sessionId,
539 String serverMsgId,
540 long timestamp) {
541 final Conversation conversation =
542 mXmppConnectionService.findOrCreateConversation(
543 account, with.asBareJid(), false, false);
544 final Message message =
545 new Message(conversation, Message.STATUS_SEND, Message.TYPE_RTP_SESSION, sessionId);
546 message.setBody(new RtpSessionStatus(false, 0).toString());
547 message.setServerMsgId(serverMsgId);
548 message.setTime(timestamp);
549 writeMessage(message);
550 }
551
552 private void writeLogMissedIncoming(
553 final Account account,
554 final Jid with,
555 final String sessionId,
556 final String serverMsgId,
557 final long timestamp,
558 final boolean stranger) {
559 final Conversation conversation =
560 mXmppConnectionService.findOrCreateConversation(
561 account, with.asBareJid(), false, false);
562 final Message message =
563 new Message(
564 conversation, Message.STATUS_RECEIVED, Message.TYPE_RTP_SESSION, sessionId);
565 message.setBody(new RtpSessionStatus(false, 0).toString());
566 message.setServerMsgId(serverMsgId);
567 message.setTime(timestamp);
568 message.setCounterpart(with);
569 writeMessage(message);
570 if (stranger) {
571 return;
572 }
573 mXmppConnectionService.getNotificationService().pushMissedCallNow(message);
574 }
575
576 private void writeMessage(final Message message) {
577 final Conversational conversational = message.getConversation();
578 if (conversational instanceof Conversation) {
579 ((Conversation) conversational).add(message);
580 mXmppConnectionService.databaseBackend.createMessage(message);
581 mXmppConnectionService.updateConversationUi();
582 } else {
583 throw new IllegalStateException("Somehow the conversation in a message was a stub");
584 }
585 }
586
587 public void startJingleFileTransfer(final Message message) {
588 Preconditions.checkArgument(
589 message.isFileOrImage(), "Message is not of type file or image");
590 final Transferable old = message.getTransferable();
591 if (old != null) {
592 old.cancel();
593 }
594 final JingleFileTransferConnection connection =
595 new JingleFileTransferConnection(this, message);
596 this.connections.put(connection.getId(), connection);
597 connection.sendSessionInitialize();
598 }
599
600 public Optional<OngoingRtpSession> getOngoingRtpConnection(final Contact contact) {
601 for (final Map.Entry<AbstractJingleConnection.Id, AbstractJingleConnection> entry :
602 this.connections.entrySet()) {
603 if (entry.getValue() instanceof JingleRtpConnection) {
604 final AbstractJingleConnection.Id id = entry.getKey();
605 if (id.account == contact.getAccount()
606 && id.with.asBareJid().equals(contact.getJid().asBareJid())) {
607 return Optional.of(id);
608 }
609 }
610 }
611 synchronized (this.rtpSessionProposals) {
612 for (final Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry :
613 this.rtpSessionProposals.entrySet()) {
614 final RtpSessionProposal proposal = entry.getKey();
615 if (proposal.account == contact.getAccount()
616 && contact.getJid().asBareJid().equals(proposal.with)) {
617 final DeviceDiscoveryState preexistingState = entry.getValue();
618 if (preexistingState != null
619 && preexistingState != DeviceDiscoveryState.FAILED) {
620 return Optional.of(proposal);
621 }
622 }
623 }
624 }
625 return Optional.absent();
626 }
627
628 void finishConnectionOrThrow(final AbstractJingleConnection connection) {
629 final AbstractJingleConnection.Id id = connection.getId();
630 if (this.connections.remove(id) == null) {
631 throw new IllegalStateException(
632 String.format("Unable to finish connection with id=%s", id));
633 }
634 // update chat UI to remove 'ongoing call' icon
635 mXmppConnectionService.updateConversationUi();
636 }
637
638 public boolean fireJingleRtpConnectionStateUpdates() {
639 boolean firedUpdates = false;
640 for (final AbstractJingleConnection connection : this.connections.values()) {
641 if (connection instanceof JingleRtpConnection jingleRtpConnection) {
642 if (jingleRtpConnection.isTerminated()) {
643 continue;
644 }
645 jingleRtpConnection.fireStateUpdate();
646 firedUpdates = true;
647 }
648 }
649 return firedUpdates;
650 }
651
652 public void retractSessionProposal(final Account account, final Jid with) {
653 synchronized (this.rtpSessionProposals) {
654 RtpSessionProposal matchingProposal = null;
655 for (RtpSessionProposal proposal : this.rtpSessionProposals.keySet()) {
656 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
657 matchingProposal = proposal;
658 break;
659 }
660 }
661 if (matchingProposal != null) {
662 retractSessionProposal(matchingProposal);
663 }
664 }
665 }
666
667 private void retractSessionProposal(RtpSessionProposal rtpSessionProposal) {
668 final Account account = rtpSessionProposal.account;
669 toneManager.transition(RtpEndUserState.ENDED, rtpSessionProposal.media);
670 Log.d(
671 Config.LOGTAG,
672 account.getJid().asBareJid()
673 + ": retracting rtp session proposal with "
674 + rtpSessionProposal.with);
675 this.rtpSessionProposals.remove(rtpSessionProposal);
676 rtpSessionProposal.callIntegration.retracted();
677 final MessagePacket messagePacket =
678 mXmppConnectionService.getMessageGenerator().sessionRetract(rtpSessionProposal);
679 writeLogMissedOutgoing(
680 account,
681 rtpSessionProposal.with,
682 rtpSessionProposal.sessionId,
683 null,
684 System.currentTimeMillis());
685 mXmppConnectionService.sendMessagePacket(account, messagePacket);
686 }
687
688 public JingleRtpConnection initializeRtpSession(
689 final Account account, final Jid with, final Set<Media> media) {
690 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, with);
691 final JingleRtpConnection rtpConnection =
692 new JingleRtpConnection(this, id, account.getJid());
693 rtpConnection.setProposedMedia(media);
694 this.connections.put(id, rtpConnection);
695 rtpConnection.sendSessionInitiate();
696 return rtpConnection;
697 }
698
699 public RtpSessionProposal proposeJingleRtpSession(
700 final Account account, final Jid with, final Set<Media> media) {
701 synchronized (this.rtpSessionProposals) {
702 for (final Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry :
703 this.rtpSessionProposals.entrySet()) {
704 final RtpSessionProposal proposal = entry.getKey();
705 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
706 final DeviceDiscoveryState preexistingState = entry.getValue();
707 if (preexistingState != null
708 && preexistingState != DeviceDiscoveryState.FAILED) {
709 final RtpEndUserState endUserState = preexistingState.toEndUserState();
710 toneManager.transition(endUserState, media);
711 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
712 account, with, proposal.sessionId, endUserState);
713 return proposal;
714 }
715 }
716 }
717 if (isBusy()) {
718 if (hasMatchingRtpSession(account, with, media)) {
719 Log.d(
720 Config.LOGTAG,
721 "ignoring request to propose jingle session because the other party already created one for us");
722 // TODO return something that we can parse the connection of of
723 return null;
724 }
725 throw new IllegalStateException(
726 "There is already a running RTP session. This should have been caught by the UI");
727 }
728 final CallIntegration callIntegration =
729 new CallIntegration(mXmppConnectionService.getApplicationContext());
730 callIntegration.setInitialAudioDevice(CallIntegration.initialAudioDevice(media));
731 final RtpSessionProposal proposal =
732 RtpSessionProposal.of(account, with.asBareJid(), media, callIntegration);
733 callIntegration.setCallback(new ProposalStateCallback(proposal));
734 this.rtpSessionProposals.put(proposal, DeviceDiscoveryState.SEARCHING);
735 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
736 account, proposal.with, proposal.sessionId, RtpEndUserState.FINDING_DEVICE);
737 final MessagePacket messagePacket =
738 mXmppConnectionService.getMessageGenerator().sessionProposal(proposal);
739 mXmppConnectionService.sendMessagePacket(account, messagePacket);
740 return proposal;
741 }
742 }
743
744 public boolean hasMatchingProposal(final Account account, final Jid with) {
745 synchronized (this.rtpSessionProposals) {
746 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry :
747 this.rtpSessionProposals.entrySet()) {
748 final RtpSessionProposal proposal = entry.getKey();
749 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
750 return true;
751 }
752 }
753 }
754 return false;
755 }
756
757 public void deliverIbbPacket(final Account account, final IqPacket packet) {
758 final String sid;
759 final Element payload;
760 final InbandBytestreamsTransport.PacketType packetType;
761 if (packet.hasChild("open", Namespace.IBB)) {
762 packetType = InbandBytestreamsTransport.PacketType.OPEN;
763 payload = packet.findChild("open", Namespace.IBB);
764 sid = payload.getAttribute("sid");
765 } else if (packet.hasChild("data", Namespace.IBB)) {
766 packetType = InbandBytestreamsTransport.PacketType.DATA;
767 payload = packet.findChild("data", Namespace.IBB);
768 sid = payload.getAttribute("sid");
769 } else if (packet.hasChild("close", Namespace.IBB)) {
770 packetType = InbandBytestreamsTransport.PacketType.CLOSE;
771 payload = packet.findChild("close", Namespace.IBB);
772 sid = payload.getAttribute("sid");
773 } else {
774 packetType = null;
775 payload = null;
776 sid = null;
777 }
778 if (sid == null) {
779 Log.d(
780 Config.LOGTAG,
781 account.getJid().asBareJid() + ": unable to deliver ibb packet. missing sid");
782 account.getXmppConnection()
783 .sendIqPacket(packet.generateResponse(IqPacket.TYPE.ERROR), null);
784 return;
785 }
786 for (final AbstractJingleConnection connection : this.connections.values()) {
787 if (connection instanceof JingleFileTransferConnection fileTransfer) {
788 final Transport transport = fileTransfer.getTransport();
789 if (transport instanceof InbandBytestreamsTransport inBandTransport) {
790 if (sid.equals(inBandTransport.getStreamId())) {
791 if (inBandTransport.deliverPacket(packetType, packet.getFrom(), payload)) {
792 account.getXmppConnection()
793 .sendIqPacket(
794 packet.generateResponse(IqPacket.TYPE.RESULT), null);
795 } else {
796 account.getXmppConnection()
797 .sendIqPacket(
798 packet.generateResponse(IqPacket.TYPE.ERROR), null);
799 }
800 return;
801 }
802 }
803 }
804 }
805 Log.d(
806 Config.LOGTAG,
807 account.getJid().asBareJid() + ": unable to deliver ibb packet with sid=" + sid);
808 account.getXmppConnection()
809 .sendIqPacket(packet.generateResponse(IqPacket.TYPE.ERROR), null);
810 }
811
812 public void notifyRebound(final Account account) {
813 for (final AbstractJingleConnection connection : this.connections.values()) {
814 connection.notifyRebound();
815 }
816 final XmppConnection xmppConnection = account.getXmppConnection();
817 if (xmppConnection != null && xmppConnection.getFeatures().sm()) {
818 resendSessionProposals(account);
819 }
820 }
821
822 public WeakReference<JingleRtpConnection> findJingleRtpConnection(
823 Account account, Jid with, String sessionId) {
824 final AbstractJingleConnection.Id id =
825 AbstractJingleConnection.Id.of(account, with, sessionId);
826 final AbstractJingleConnection connection = connections.get(id);
827 if (connection instanceof JingleRtpConnection) {
828 return new WeakReference<>((JingleRtpConnection) connection);
829 }
830 return null;
831 }
832
833 public JingleRtpConnection findJingleRtpConnection(final Account account, final Jid with) {
834 for (final AbstractJingleConnection connection : this.connections.values()) {
835 if (connection instanceof JingleRtpConnection rtpConnection) {
836 if (rtpConnection.isTerminated()) {
837 continue;
838 }
839 final var id = rtpConnection.getId();
840 if (id.account == account && account.getJid().equals(with)) {
841 return rtpConnection;
842 }
843 }
844 }
845 return null;
846 }
847
848 private void resendSessionProposals(final Account account) {
849 synchronized (this.rtpSessionProposals) {
850 for (final Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry :
851 this.rtpSessionProposals.entrySet()) {
852 final RtpSessionProposal proposal = entry.getKey();
853 if (entry.getValue() == DeviceDiscoveryState.SEARCHING
854 && proposal.account == account) {
855 Log.d(
856 Config.LOGTAG,
857 account.getJid().asBareJid()
858 + ": resending session proposal to "
859 + proposal.with);
860 final MessagePacket messagePacket =
861 mXmppConnectionService.getMessageGenerator().sessionProposal(proposal);
862 mXmppConnectionService.sendMessagePacket(account, messagePacket);
863 }
864 }
865 }
866 }
867
868 public void updateProposedSessionDiscovered(
869 Account account, Jid from, String sessionId, final DeviceDiscoveryState target) {
870 synchronized (this.rtpSessionProposals) {
871 final RtpSessionProposal sessionProposal =
872 getRtpSessionProposal(account, from.asBareJid(), sessionId);
873 final DeviceDiscoveryState currentState =
874 sessionProposal == null ? null : rtpSessionProposals.get(sessionProposal);
875 if (currentState == null) {
876 Log.d(Config.LOGTAG, "unable to find session proposal for session id " + sessionId);
877 return;
878 }
879 if (currentState == DeviceDiscoveryState.DISCOVERED) {
880 Log.d(
881 Config.LOGTAG,
882 "session proposal already at discovered. not going to fall back");
883 return;
884 }
885 this.rtpSessionProposals.put(sessionProposal, target);
886 final RtpEndUserState endUserState = target.toEndUserState();
887 if (endUserState == RtpEndUserState.RINGING) {
888 sessionProposal.callIntegration.setDialing();
889 }
890 // toneManager.transition(endUserState, sessionProposal.media);
891 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
892 account, sessionProposal.with, sessionProposal.sessionId, endUserState);
893 Log.d(
894 Config.LOGTAG,
895 account.getJid().asBareJid()
896 + ": flagging session "
897 + sessionId
898 + " as "
899 + target);
900 }
901 }
902
903 public void rejectRtpSession(final String sessionId) {
904 for (final AbstractJingleConnection connection : this.connections.values()) {
905 if (connection.getId().sessionId.equals(sessionId)) {
906 if (connection instanceof JingleRtpConnection) {
907 try {
908 ((JingleRtpConnection) connection).rejectCall();
909 return;
910 } catch (final IllegalStateException e) {
911 Log.w(
912 Config.LOGTAG,
913 "race condition on rejecting call from notification",
914 e);
915 }
916 }
917 }
918 }
919 }
920
921 public void endRtpSession(final String sessionId) {
922 for (final AbstractJingleConnection connection : this.connections.values()) {
923 if (connection.getId().sessionId.equals(sessionId)) {
924 if (connection instanceof JingleRtpConnection) {
925 ((JingleRtpConnection) connection).endCall();
926 }
927 }
928 }
929 }
930
931 public void failProceed(
932 Account account, final Jid with, final String sessionId, final String message) {
933 final AbstractJingleConnection.Id id =
934 AbstractJingleConnection.Id.of(account, with, sessionId);
935 final AbstractJingleConnection existingJingleConnection = connections.get(id);
936 if (existingJingleConnection instanceof JingleRtpConnection) {
937 ((JingleRtpConnection) existingJingleConnection).deliverFailedProceed(message);
938 }
939 }
940
941 void ensureConnectionIsRegistered(final AbstractJingleConnection connection) {
942 if (connections.containsValue(connection)) {
943 return;
944 }
945 final IllegalStateException e =
946 new IllegalStateException(
947 "JingleConnection has not been registered with connection manager");
948 Log.e(Config.LOGTAG, "ensureConnectionIsRegistered() failed. Going to throw", e);
949 throw e;
950 }
951
952 void setTerminalSessionState(
953 AbstractJingleConnection.Id id, final RtpEndUserState state, final Set<Media> media) {
954 this.terminatedSessions.put(
955 PersistableSessionId.of(id), new TerminatedRtpSession(state, media));
956 }
957
958 public TerminatedRtpSession getTerminalSessionState(final Jid with, final String sessionId) {
959 return this.terminatedSessions.getIfPresent(new PersistableSessionId(with, sessionId));
960 }
961
962 private static class PersistableSessionId {
963 private final Jid with;
964 private final String sessionId;
965
966 private PersistableSessionId(Jid with, String sessionId) {
967 this.with = with;
968 this.sessionId = sessionId;
969 }
970
971 public static PersistableSessionId of(AbstractJingleConnection.Id id) {
972 return new PersistableSessionId(id.with, id.sessionId);
973 }
974
975 @Override
976 public boolean equals(Object o) {
977 if (this == o) return true;
978 if (o == null || getClass() != o.getClass()) return false;
979 PersistableSessionId that = (PersistableSessionId) o;
980 return Objects.equal(with, that.with) && Objects.equal(sessionId, that.sessionId);
981 }
982
983 @Override
984 public int hashCode() {
985 return Objects.hashCode(with, sessionId);
986 }
987 }
988
989 public static class TerminatedRtpSession {
990 public final RtpEndUserState state;
991 public final Set<Media> media;
992
993 TerminatedRtpSession(RtpEndUserState state, Set<Media> media) {
994 this.state = state;
995 this.media = media;
996 }
997 }
998
999 public enum DeviceDiscoveryState {
1000 SEARCHING,
1001 SEARCHING_ACKNOWLEDGED,
1002 DISCOVERED,
1003 FAILED;
1004
1005 public RtpEndUserState toEndUserState() {
1006 return switch (this) {
1007 case SEARCHING, SEARCHING_ACKNOWLEDGED -> RtpEndUserState.FINDING_DEVICE;
1008 case DISCOVERED -> RtpEndUserState.RINGING;
1009 default -> RtpEndUserState.CONNECTIVITY_ERROR;
1010 };
1011 }
1012 }
1013
1014 public static class RtpSessionProposal implements OngoingRtpSession {
1015 public final Jid with;
1016 public final String sessionId;
1017 public final Set<Media> media;
1018 private final Account account;
1019 private final CallIntegration callIntegration;
1020
1021 private RtpSessionProposal(
1022 Account account,
1023 Jid with,
1024 String sessionId,
1025 Set<Media> media,
1026 final CallIntegration callIntegration) {
1027 this.account = account;
1028 this.with = with;
1029 this.sessionId = sessionId;
1030 this.media = media;
1031 this.callIntegration = callIntegration;
1032 }
1033
1034 public static RtpSessionProposal of(
1035 Account account,
1036 Jid with,
1037 Set<Media> media,
1038 final CallIntegration callIntegration) {
1039 return new RtpSessionProposal(account, with, nextRandomId(), media, callIntegration);
1040 }
1041
1042 @Override
1043 public boolean equals(Object o) {
1044 if (this == o) return true;
1045 if (o == null || getClass() != o.getClass()) return false;
1046 RtpSessionProposal proposal = (RtpSessionProposal) o;
1047 return Objects.equal(account.getJid(), proposal.account.getJid())
1048 && Objects.equal(with, proposal.with)
1049 && Objects.equal(sessionId, proposal.sessionId);
1050 }
1051
1052 @Override
1053 public int hashCode() {
1054 return Objects.hashCode(account.getJid(), with, sessionId);
1055 }
1056
1057 @Override
1058 public Account getAccount() {
1059 return account;
1060 }
1061
1062 @Override
1063 public Jid getWith() {
1064 return with;
1065 }
1066
1067 @Override
1068 public String getSessionId() {
1069 return sessionId;
1070 }
1071
1072 public CallIntegration getCallIntegration() {
1073 return this.callIntegration;
1074 }
1075 }
1076
1077 public class ProposalStateCallback implements CallIntegration.Callback {
1078
1079 private final RtpSessionProposal proposal;
1080
1081 public ProposalStateCallback(final RtpSessionProposal proposal) {
1082 this.proposal = proposal;
1083 }
1084
1085 @Override
1086 public void onCallIntegrationShowIncomingCallUi() {}
1087
1088 @Override
1089 public void onCallIntegrationDisconnect() {
1090 Log.d(Config.LOGTAG, "a phone call has just been started. retracting proposal");
1091 retractSessionProposal(this.proposal);
1092 }
1093
1094 @Override
1095 public void onAudioDeviceChanged(
1096 CallIntegration.AudioDevice selectedAudioDevice,
1097 Set<CallIntegration.AudioDevice> availableAudioDevices) {}
1098 }
1099}