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.XmppConnection;
44import eu.siacs.conversations.xmpp.jingle.stanzas.Content;
45import eu.siacs.conversations.xmpp.jingle.stanzas.FileTransferDescription;
46import eu.siacs.conversations.xmpp.jingle.stanzas.GenericDescription;
47import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
48import eu.siacs.conversations.xmpp.jingle.stanzas.Propose;
49import eu.siacs.conversations.xmpp.jingle.stanzas.Reason;
50import eu.siacs.conversations.xmpp.jingle.stanzas.RtpDescription;
51import eu.siacs.conversations.xmpp.stanzas.IqPacket;
52import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
53
54public class JingleConnectionManager extends AbstractConnectionManager {
55 static final ScheduledExecutorService SCHEDULED_EXECUTOR_SERVICE =
56 Executors.newSingleThreadScheduledExecutor();
57 final ToneManager toneManager;
58 private final HashMap<RtpSessionProposal, DeviceDiscoveryState> rtpSessionProposals =
59 new HashMap<>();
60 private final ConcurrentHashMap<AbstractJingleConnection.Id, AbstractJingleConnection>
61 connections = new ConcurrentHashMap<>();
62
63 private final Cache<PersistableSessionId, TerminatedRtpSession> terminatedSessions =
64 CacheBuilder.newBuilder().expireAfterWrite(24, TimeUnit.HOURS).build();
65
66 private final HashMap<Jid, JingleCandidate> primaryCandidates = new HashMap<>();
67
68 public JingleConnectionManager(XmppConnectionService service) {
69 super(service);
70 this.toneManager = new ToneManager(service);
71 }
72
73 static String nextRandomId() {
74 final byte[] id = new byte[16];
75 new SecureRandom().nextBytes(id);
76 return Base64.encodeToString(id, Base64.NO_WRAP | Base64.NO_PADDING);
77 }
78
79 public void deliverPacket(final Account account, final JinglePacket packet) {
80 final String sessionId = packet.getSessionId();
81 if (sessionId == null) {
82 respondWithJingleError(account, packet, "unknown-session", "item-not-found", "cancel");
83 return;
84 }
85 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, packet);
86 final AbstractJingleConnection existingJingleConnection = connections.get(id);
87 if (existingJingleConnection != null) {
88 existingJingleConnection.deliverPacket(packet);
89 } else if (packet.getAction() == JinglePacket.Action.SESSION_INITIATE) {
90 final Jid from = packet.getFrom();
91 final Content content = packet.getJingleContent();
92 final String descriptionNamespace =
93 content == null ? null : content.getDescriptionNamespace();
94 final AbstractJingleConnection connection;
95 if (FileTransferDescription.NAMESPACES.contains(descriptionNamespace)) {
96 connection = new JingleFileTransferConnection(this, id, from);
97 } else if (Namespace.JINGLE_APPS_RTP.equals(descriptionNamespace)
98 && isUsingClearNet(account)) {
99 final boolean sessionEnded =
100 this.terminatedSessions.asMap().containsKey(PersistableSessionId.of(id));
101 final boolean stranger =
102 isWithStrangerAndStrangerNotificationsAreOff(account, id.with);
103 if (isBusy() || 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 return;
121 }
122 connection = new JingleRtpConnection(this, id, from);
123 } else {
124 respondWithJingleError(
125 account, packet, "unsupported-info", "feature-not-implemented", "cancel");
126 return;
127 }
128 connections.put(id, connection);
129 mXmppConnectionService.updateConversationUi();
130 connection.deliverPacket(packet);
131 } else {
132 Log.d(Config.LOGTAG, "unable to route jingle packet: " + packet);
133 respondWithJingleError(account, packet, "unknown-session", "item-not-found", "cancel");
134 }
135 }
136
137 private boolean isUsingClearNet(final Account account) {
138 return !account.isOnion() && !mXmppConnectionService.useTorToConnect();
139 }
140
141 public boolean isBusy() {
142 if (mXmppConnectionService.isPhoneInCall()) {
143 return true;
144 }
145 for (AbstractJingleConnection connection : this.connections.values()) {
146 if (connection instanceof JingleRtpConnection) {
147 if (((JingleRtpConnection) connection).isTerminated()) {
148 continue;
149 }
150 return true;
151 }
152 }
153 synchronized (this.rtpSessionProposals) {
154 return this.rtpSessionProposals.containsValue(DeviceDiscoveryState.DISCOVERED)
155 || this.rtpSessionProposals.containsValue(DeviceDiscoveryState.SEARCHING)
156 || this.rtpSessionProposals.containsValue(
157 DeviceDiscoveryState.SEARCHING_ACKNOWLEDGED);
158 }
159 }
160
161 public void notifyPhoneCallStarted() {
162 for (AbstractJingleConnection connection : connections.values()) {
163 if (connection instanceof JingleRtpConnection) {
164 final JingleRtpConnection rtpConnection = (JingleRtpConnection) connection;
165 if (rtpConnection.isTerminated()) {
166 continue;
167 }
168 rtpConnection.notifyPhoneCall();
169 }
170 }
171 }
172
173 private Optional<RtpSessionProposal> findMatchingSessionProposal(
174 final Account account, final Jid with, final Set<Media> media) {
175 synchronized (this.rtpSessionProposals) {
176 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry :
177 this.rtpSessionProposals.entrySet()) {
178 final RtpSessionProposal proposal = entry.getKey();
179 final DeviceDiscoveryState state = entry.getValue();
180 final boolean openProposal =
181 state == DeviceDiscoveryState.DISCOVERED
182 || state == DeviceDiscoveryState.SEARCHING
183 || state == DeviceDiscoveryState.SEARCHING_ACKNOWLEDGED;
184 if (openProposal
185 && proposal.account == account
186 && proposal.with.equals(with.asBareJid())
187 && proposal.media.equals(media)) {
188 return Optional.of(proposal);
189 }
190 }
191 }
192 return Optional.absent();
193 }
194
195 private boolean hasMatchingRtpSession(
196 final Account account, final Jid with, final Set<Media> media) {
197 for (AbstractJingleConnection connection : this.connections.values()) {
198 if (connection instanceof JingleRtpConnection) {
199 final JingleRtpConnection rtpConnection = (JingleRtpConnection) connection;
200 if (rtpConnection.isTerminated()) {
201 continue;
202 }
203 if (rtpConnection.getId().account == account
204 && rtpConnection.getId().with.asBareJid().equals(with.asBareJid())
205 && rtpConnection.getMedia().equals(media)) {
206 return true;
207 }
208 }
209 }
210 return false;
211 }
212
213 private boolean isWithStrangerAndStrangerNotificationsAreOff(final Account account, Jid with) {
214 final boolean notifyForStrangers =
215 mXmppConnectionService.getNotificationService().notificationsFromStrangers();
216 if (notifyForStrangers) {
217 return false;
218 }
219 final Contact contact = account.getRoster().getContact(with);
220 return !contact.showInContactList();
221 }
222
223 ScheduledFuture<?> schedule(
224 final Runnable runnable, final long delay, final TimeUnit timeUnit) {
225 return SCHEDULED_EXECUTOR_SERVICE.schedule(runnable, delay, timeUnit);
226 }
227
228 void respondWithJingleError(
229 final Account account,
230 final IqPacket original,
231 String jingleCondition,
232 String condition,
233 String conditionType) {
234 final IqPacket response = original.generateResponse(IqPacket.TYPE.ERROR);
235 final Element error = response.addChild("error");
236 error.setAttribute("type", conditionType);
237 error.addChild(condition, "urn:ietf:params:xml:ns:xmpp-stanzas");
238 error.addChild(jingleCondition, Namespace.JINGLE_ERRORS);
239 account.getXmppConnection().sendIqPacket(response, null);
240 }
241
242 public void deliverMessage(
243 final Account account,
244 final Jid to,
245 final Jid from,
246 final Element message,
247 String remoteMsgId,
248 String serverMsgId,
249 long timestamp) {
250 Preconditions.checkArgument(Namespace.JINGLE_MESSAGE.equals(message.getNamespace()));
251 final String sessionId = message.getAttribute("id");
252 if (sessionId == null) {
253 return;
254 }
255 if ("accept".equals(message.getName())) {
256 for (AbstractJingleConnection connection : connections.values()) {
257 if (connection instanceof JingleRtpConnection) {
258 final JingleRtpConnection rtpConnection = (JingleRtpConnection) connection;
259 final AbstractJingleConnection.Id id = connection.getId();
260 if (id.account == account && id.sessionId.equals(sessionId)) {
261 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
262 return;
263 }
264 }
265 }
266 return;
267 }
268 final boolean fromSelf = from.asBareJid().equals(account.getJid().asBareJid());
269 final boolean addressedDirectly = to != null && to.equals(account.getJid());
270 final AbstractJingleConnection.Id id;
271 if (fromSelf) {
272 if (to != null && to.isFullJid()) {
273 id = AbstractJingleConnection.Id.of(account, to, sessionId);
274 } else {
275 return;
276 }
277 } else {
278 id = AbstractJingleConnection.Id.of(account, from, sessionId);
279 }
280 final AbstractJingleConnection existingJingleConnection = connections.get(id);
281 if (existingJingleConnection != null) {
282 if (existingJingleConnection instanceof JingleRtpConnection) {
283 ((JingleRtpConnection) existingJingleConnection)
284 .deliveryMessage(from, message, serverMsgId, timestamp);
285 } else {
286 Log.d(
287 Config.LOGTAG,
288 account.getJid().asBareJid()
289 + ": "
290 + existingJingleConnection.getClass().getName()
291 + " does not support jingle messages");
292 }
293 return;
294 }
295
296 if (fromSelf) {
297 if ("proceed".equals(message.getName())) {
298 final Conversation c =
299 mXmppConnectionService.findOrCreateConversation(
300 account, id.with, false, false);
301 final Message previousBusy = c.findRtpSession(sessionId, Message.STATUS_RECEIVED);
302 if (previousBusy != null) {
303 previousBusy.setBody(new RtpSessionStatus(true, 0).toString());
304 if (serverMsgId != null) {
305 previousBusy.setServerMsgId(serverMsgId);
306 }
307 previousBusy.setTime(timestamp);
308 mXmppConnectionService.updateMessage(previousBusy, true);
309 Log.d(
310 Config.LOGTAG,
311 id.account.getJid().asBareJid()
312 + ": updated previous busy because call got picked up by another device");
313 return;
314 }
315 }
316 // TODO handle reject for cases where we don’t have carbon copies (normally reject is to
317 // be sent to own bare jid as well)
318 Log.d(
319 Config.LOGTAG,
320 account.getJid().asBareJid() + ": ignore jingle message from self");
321 return;
322 }
323
324 if ("propose".equals(message.getName())) {
325 final Propose propose = Propose.upgrade(message);
326 final List<GenericDescription> descriptions = propose.getDescriptions();
327 final Collection<RtpDescription> rtpDescriptions =
328 Collections2.transform(
329 Collections2.filter(descriptions, d -> d instanceof RtpDescription),
330 input -> (RtpDescription) input);
331 if (rtpDescriptions.size() > 0
332 && rtpDescriptions.size() == descriptions.size()
333 && isUsingClearNet(account)) {
334 final Collection<Media> media =
335 Collections2.transform(rtpDescriptions, RtpDescription::getMedia);
336 if (media.contains(Media.UNKNOWN)) {
337 Log.d(
338 Config.LOGTAG,
339 account.getJid().asBareJid()
340 + ": encountered unknown media in session proposal. "
341 + propose);
342 return;
343 }
344 final Optional<RtpSessionProposal> matchingSessionProposal =
345 findMatchingSessionProposal(account, id.with, ImmutableSet.copyOf(media));
346 if (matchingSessionProposal.isPresent()) {
347 final String ourSessionId = matchingSessionProposal.get().sessionId;
348 final String theirSessionId = id.sessionId;
349 if (ComparisonChain.start()
350 .compare(ourSessionId, theirSessionId)
351 .compare(
352 account.getJid().toEscapedString(),
353 id.with.toEscapedString())
354 .result()
355 > 0) {
356 Log.d(
357 Config.LOGTAG,
358 account.getJid().asBareJid()
359 + ": our session lost tie break. automatically accepting their session. winning Session="
360 + theirSessionId);
361 // TODO a retract for this reason should probably include some indication of
362 // tie break
363 retractSessionProposal(matchingSessionProposal.get());
364 final JingleRtpConnection rtpConnection =
365 new JingleRtpConnection(this, id, from);
366 this.connections.put(id, rtpConnection);
367 rtpConnection.setProposedMedia(ImmutableSet.copyOf(media));
368 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
369 } else {
370 Log.d(
371 Config.LOGTAG,
372 account.getJid().asBareJid()
373 + ": our session won tie break. waiting for other party to accept. winningSession="
374 + ourSessionId);
375 }
376 return;
377 }
378 final boolean stranger =
379 isWithStrangerAndStrangerNotificationsAreOff(account, id.with);
380 if (isBusy() || stranger) {
381 writeLogMissedIncoming(
382 account, id.with.asBareJid(), id.sessionId, serverMsgId, timestamp);
383 if (stranger) {
384 Log.d(
385 Config.LOGTAG,
386 id.account.getJid().asBareJid()
387 + ": ignoring call proposal from stranger "
388 + id.with);
389 return;
390 }
391 final int activeDevices = account.activeDevicesWithRtpCapability();
392 Log.d(Config.LOGTAG, "active devices with rtp capability: " + activeDevices);
393 if (activeDevices == 0) {
394 final MessagePacket reject =
395 mXmppConnectionService
396 .getMessageGenerator()
397 .sessionReject(from, sessionId);
398 mXmppConnectionService.sendMessagePacket(account, reject);
399 } else {
400 Log.d(
401 Config.LOGTAG,
402 id.account.getJid().asBareJid()
403 + ": ignoring proposal because busy on this device but there are other devices");
404 }
405 } else {
406 final JingleRtpConnection rtpConnection =
407 new JingleRtpConnection(this, id, from);
408 this.connections.put(id, rtpConnection);
409 rtpConnection.setProposedMedia(ImmutableSet.copyOf(media));
410 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
411 }
412 } else {
413 Log.d(
414 Config.LOGTAG,
415 account.getJid().asBareJid()
416 + ": unable to react to proposed session with "
417 + rtpDescriptions.size()
418 + " rtp descriptions of "
419 + descriptions.size()
420 + " total descriptions");
421 }
422 } else if (addressedDirectly && "proceed".equals(message.getName())) {
423 synchronized (rtpSessionProposals) {
424 final RtpSessionProposal proposal =
425 getRtpSessionProposal(account, from.asBareJid(), sessionId);
426 if (proposal != null) {
427 rtpSessionProposals.remove(proposal);
428 final JingleRtpConnection rtpConnection =
429 new JingleRtpConnection(this, id, account.getJid());
430 rtpConnection.setProposedMedia(proposal.media);
431 this.connections.put(id, rtpConnection);
432 rtpConnection.transitionOrThrow(AbstractJingleConnection.State.PROPOSED);
433 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
434 } else {
435 Log.d(
436 Config.LOGTAG,
437 account.getJid().asBareJid()
438 + ": no rtp session proposal found for "
439 + from
440 + " to deliver proceed");
441 if (remoteMsgId == null) {
442 return;
443 }
444 final MessagePacket errorMessage = new MessagePacket();
445 errorMessage.setTo(from);
446 errorMessage.setId(remoteMsgId);
447 errorMessage.setType(MessagePacket.TYPE_ERROR);
448 final Element error = errorMessage.addChild("error");
449 error.setAttribute("code", "404");
450 error.setAttribute("type", "cancel");
451 error.addChild("item-not-found", "urn:ietf:params:xml:ns:xmpp-stanzas");
452 mXmppConnectionService.sendMessagePacket(account, errorMessage);
453 }
454 }
455 } else if (addressedDirectly && "reject".equals(message.getName())) {
456 final RtpSessionProposal proposal =
457 getRtpSessionProposal(account, from.asBareJid(), sessionId);
458 synchronized (rtpSessionProposals) {
459 if (proposal != null && rtpSessionProposals.remove(proposal) != null) {
460 writeLogMissedOutgoing(
461 account, proposal.with, proposal.sessionId, serverMsgId, timestamp);
462 toneManager.transition(RtpEndUserState.DECLINED_OR_BUSY, proposal.media);
463 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
464 account,
465 proposal.with,
466 proposal.sessionId,
467 RtpEndUserState.DECLINED_OR_BUSY);
468 } else {
469 Log.d(
470 Config.LOGTAG,
471 account.getJid().asBareJid()
472 + ": no rtp session proposal found for "
473 + from
474 + " to deliver reject");
475 }
476 }
477 } else {
478 Log.d(
479 Config.LOGTAG,
480 account.getJid().asBareJid()
481 + ": retrieved out of order jingle message"
482 + message);
483 }
484 }
485
486 private RtpSessionProposal getRtpSessionProposal(
487 final Account account, Jid from, String sessionId) {
488 for (RtpSessionProposal rtpSessionProposal : rtpSessionProposals.keySet()) {
489 if (rtpSessionProposal.sessionId.equals(sessionId)
490 && rtpSessionProposal.with.equals(from)
491 && rtpSessionProposal.account.getJid().equals(account.getJid())) {
492 return rtpSessionProposal;
493 }
494 }
495 return null;
496 }
497
498 private void writeLogMissedOutgoing(
499 final Account account,
500 Jid with,
501 final String sessionId,
502 String serverMsgId,
503 long timestamp) {
504 final Conversation conversation =
505 mXmppConnectionService.findOrCreateConversation(
506 account, with.asBareJid(), false, false);
507 final Message message =
508 new Message(conversation, Message.STATUS_SEND, Message.TYPE_RTP_SESSION, sessionId);
509 message.setBody(new RtpSessionStatus(false, 0).toString());
510 message.setServerMsgId(serverMsgId);
511 message.setTime(timestamp);
512 writeMessage(message);
513 }
514
515 private void writeLogMissedIncoming(
516 final Account account,
517 Jid with,
518 final String sessionId,
519 String serverMsgId,
520 long timestamp) {
521 final Conversation conversation =
522 mXmppConnectionService.findOrCreateConversation(
523 account, with.asBareJid(), false, false);
524 final Message message =
525 new Message(
526 conversation, Message.STATUS_RECEIVED, Message.TYPE_RTP_SESSION, sessionId);
527 message.setBody(new RtpSessionStatus(false, 0).toString());
528 message.setServerMsgId(serverMsgId);
529 message.setTime(timestamp);
530 writeMessage(message);
531 }
532
533 private void writeMessage(final Message message) {
534 final Conversational conversational = message.getConversation();
535 if (conversational instanceof Conversation) {
536 ((Conversation) conversational).add(message);
537 mXmppConnectionService.databaseBackend.createMessage(message);
538 mXmppConnectionService.updateConversationUi();
539 } else {
540 throw new IllegalStateException("Somehow the conversation in a message was a stub");
541 }
542 }
543
544 public void startJingleFileTransfer(final Message message) {
545 Preconditions.checkArgument(
546 message.isFileOrImage(), "Message is not of type file or image");
547 final Transferable old = message.getTransferable();
548 if (old != null) {
549 old.cancel();
550 }
551 final Account account = message.getConversation().getAccount();
552 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(message);
553 final JingleFileTransferConnection connection =
554 new JingleFileTransferConnection(this, id, account.getJid());
555 mXmppConnectionService.markMessage(message, Message.STATUS_WAITING);
556 this.connections.put(id, connection);
557 connection.init(message);
558 }
559
560 public Optional<OngoingRtpSession> getOngoingRtpConnection(final Contact contact) {
561 for (final Map.Entry<AbstractJingleConnection.Id, AbstractJingleConnection> entry :
562 this.connections.entrySet()) {
563 if (entry.getValue() instanceof JingleRtpConnection) {
564 final AbstractJingleConnection.Id id = entry.getKey();
565 if (id.account == contact.getAccount()
566 && id.with.asBareJid().equals(contact.getJid().asBareJid())) {
567 return Optional.of(id);
568 }
569 }
570 }
571 synchronized (this.rtpSessionProposals) {
572 for (final Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry :
573 this.rtpSessionProposals.entrySet()) {
574 final RtpSessionProposal proposal = entry.getKey();
575 if (proposal.account == contact.getAccount()
576 && contact.getJid().asBareJid().equals(proposal.with)) {
577 final DeviceDiscoveryState preexistingState = entry.getValue();
578 if (preexistingState != null
579 && preexistingState != DeviceDiscoveryState.FAILED) {
580 return Optional.of(proposal);
581 }
582 }
583 }
584 }
585 return Optional.absent();
586 }
587
588 void finishConnection(final AbstractJingleConnection connection) {
589 this.connections.remove(connection.getId());
590 }
591
592 void finishConnectionOrThrow(final AbstractJingleConnection connection) {
593 final AbstractJingleConnection.Id id = connection.getId();
594 if (this.connections.remove(id) == null) {
595 throw new IllegalStateException(
596 String.format("Unable to finish connection with id=%s", id.toString()));
597 }
598 }
599
600 public boolean fireJingleRtpConnectionStateUpdates() {
601 boolean firedUpdates = false;
602 for (final AbstractJingleConnection connection : this.connections.values()) {
603 if (connection instanceof JingleRtpConnection) {
604 final JingleRtpConnection jingleRtpConnection = (JingleRtpConnection) connection;
605 if (jingleRtpConnection.isTerminated()) {
606 continue;
607 }
608 jingleRtpConnection.fireStateUpdate();
609 firedUpdates = true;
610 }
611 }
612 return firedUpdates;
613 }
614
615 void getPrimaryCandidate(
616 final Account account,
617 final boolean initiator,
618 final OnPrimaryCandidateFound listener) {
619 if (Config.DISABLE_PROXY_LOOKUP) {
620 listener.onPrimaryCandidateFound(false, null);
621 return;
622 }
623 if (!this.primaryCandidates.containsKey(account.getJid().asBareJid())) {
624 final Jid proxy =
625 account.getXmppConnection().findDiscoItemByFeature(Namespace.BYTE_STREAMS);
626 if (proxy != null) {
627 IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
628 iq.setTo(proxy);
629 iq.query(Namespace.BYTE_STREAMS);
630 account.getXmppConnection()
631 .sendIqPacket(
632 iq,
633 new OnIqPacketReceived() {
634
635 @Override
636 public void onIqPacketReceived(
637 Account account, IqPacket packet) {
638 final Element streamhost =
639 packet.query()
640 .findChild(
641 "streamhost",
642 Namespace.BYTE_STREAMS);
643 final String host =
644 streamhost == null
645 ? null
646 : streamhost.getAttribute("host");
647 final String port =
648 streamhost == null
649 ? null
650 : streamhost.getAttribute("port");
651 if (host != null && port != null) {
652 try {
653 JingleCandidate candidate =
654 new JingleCandidate(nextRandomId(), true);
655 candidate.setHost(host);
656 candidate.setPort(Integer.parseInt(port));
657 candidate.setType(JingleCandidate.TYPE_PROXY);
658 candidate.setJid(proxy);
659 candidate.setPriority(
660 655360 + (initiator ? 30 : 0));
661 primaryCandidates.put(
662 account.getJid().asBareJid(), candidate);
663 listener.onPrimaryCandidateFound(true, candidate);
664 } catch (final NumberFormatException e) {
665 listener.onPrimaryCandidateFound(false, null);
666 }
667 } else {
668 listener.onPrimaryCandidateFound(false, null);
669 }
670 }
671 });
672 } else {
673 listener.onPrimaryCandidateFound(false, null);
674 }
675
676 } else {
677 listener.onPrimaryCandidateFound(
678 true, this.primaryCandidates.get(account.getJid().asBareJid()));
679 }
680 }
681
682 public void retractSessionProposal(final Account account, final Jid with) {
683 synchronized (this.rtpSessionProposals) {
684 RtpSessionProposal matchingProposal = null;
685 for (RtpSessionProposal proposal : this.rtpSessionProposals.keySet()) {
686 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
687 matchingProposal = proposal;
688 break;
689 }
690 }
691 if (matchingProposal != null) {
692 retractSessionProposal(matchingProposal);
693 }
694 }
695 }
696
697 private void retractSessionProposal(RtpSessionProposal rtpSessionProposal) {
698 final Account account = rtpSessionProposal.account;
699 toneManager.transition(RtpEndUserState.ENDED, rtpSessionProposal.media);
700 Log.d(
701 Config.LOGTAG,
702 account.getJid().asBareJid()
703 + ": retracting rtp session proposal with "
704 + rtpSessionProposal.with);
705 this.rtpSessionProposals.remove(rtpSessionProposal);
706 final MessagePacket messagePacket =
707 mXmppConnectionService.getMessageGenerator().sessionRetract(rtpSessionProposal);
708 writeLogMissedOutgoing(
709 account,
710 rtpSessionProposal.with,
711 rtpSessionProposal.sessionId,
712 null,
713 System.currentTimeMillis());
714 mXmppConnectionService.sendMessagePacket(account, messagePacket);
715 }
716
717 public String initializeRtpSession(
718 final Account account, final Jid with, final Set<Media> media) {
719 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, with);
720 final JingleRtpConnection rtpConnection =
721 new JingleRtpConnection(this, id, account.getJid());
722 rtpConnection.setProposedMedia(media);
723 this.connections.put(id, rtpConnection);
724 rtpConnection.sendSessionInitiate();
725 return id.sessionId;
726 }
727
728 public void proposeJingleRtpSession(
729 final Account account, final Jid with, final Set<Media> media) {
730 synchronized (this.rtpSessionProposals) {
731 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry :
732 this.rtpSessionProposals.entrySet()) {
733 RtpSessionProposal proposal = entry.getKey();
734 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
735 final DeviceDiscoveryState preexistingState = entry.getValue();
736 if (preexistingState != null
737 && preexistingState != DeviceDiscoveryState.FAILED) {
738 final RtpEndUserState endUserState = preexistingState.toEndUserState();
739 toneManager.transition(endUserState, media);
740 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
741 account, with, proposal.sessionId, endUserState);
742 return;
743 }
744 }
745 }
746 if (isBusy()) {
747 if (hasMatchingRtpSession(account, with, media)) {
748 Log.d(
749 Config.LOGTAG,
750 "ignoring request to propose jingle session because the other party already created one for us");
751 return;
752 }
753 throw new IllegalStateException(
754 "There is already a running RTP session. This should have been caught by the UI");
755 }
756 final RtpSessionProposal proposal =
757 RtpSessionProposal.of(account, with.asBareJid(), media);
758 this.rtpSessionProposals.put(proposal, DeviceDiscoveryState.SEARCHING);
759 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
760 account, proposal.with, proposal.sessionId, RtpEndUserState.FINDING_DEVICE);
761 final MessagePacket messagePacket =
762 mXmppConnectionService.getMessageGenerator().sessionProposal(proposal);
763 mXmppConnectionService.sendMessagePacket(account, messagePacket);
764 }
765 }
766
767 public boolean hasMatchingProposal(final Account account, final Jid with) {
768 synchronized (this.rtpSessionProposals) {
769 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry :
770 this.rtpSessionProposals.entrySet()) {
771 final RtpSessionProposal proposal = entry.getKey();
772 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
773 return true;
774 }
775 }
776 }
777 return false;
778 }
779
780 public void deliverIbbPacket(Account account, IqPacket packet) {
781 final String sid;
782 final Element payload;
783 if (packet.hasChild("open", Namespace.IBB)) {
784 payload = packet.findChild("open", Namespace.IBB);
785 sid = payload.getAttribute("sid");
786 } else if (packet.hasChild("data", Namespace.IBB)) {
787 payload = packet.findChild("data", Namespace.IBB);
788 sid = payload.getAttribute("sid");
789 } else if (packet.hasChild("close", Namespace.IBB)) {
790 payload = packet.findChild("close", Namespace.IBB);
791 sid = payload.getAttribute("sid");
792 } else {
793 payload = null;
794 sid = null;
795 }
796 if (sid != null) {
797 for (final AbstractJingleConnection connection : this.connections.values()) {
798 if (connection instanceof JingleFileTransferConnection) {
799 final JingleFileTransferConnection fileTransfer =
800 (JingleFileTransferConnection) connection;
801 final JingleTransport transport = fileTransfer.getTransport();
802 if (transport instanceof JingleInBandTransport) {
803 final JingleInBandTransport inBandTransport =
804 (JingleInBandTransport) transport;
805 if (inBandTransport.matches(account, sid)) {
806 inBandTransport.deliverPayload(packet, payload);
807 }
808 return;
809 }
810 }
811 }
812 }
813 Log.d(Config.LOGTAG, "unable to deliver ibb packet: " + packet.toString());
814 account.getXmppConnection()
815 .sendIqPacket(packet.generateResponse(IqPacket.TYPE.ERROR), null);
816 }
817
818 public void notifyRebound(final Account account) {
819 for (final AbstractJingleConnection connection : this.connections.values()) {
820 connection.notifyRebound();
821 }
822 final XmppConnection xmppConnection = account.getXmppConnection();
823 if (xmppConnection != null && xmppConnection.getFeatures().sm()) {
824 resendSessionProposals(account);
825 }
826 }
827
828 public WeakReference<JingleRtpConnection> findJingleRtpConnection(
829 Account account, Jid with, String sessionId) {
830 final AbstractJingleConnection.Id id =
831 AbstractJingleConnection.Id.of(account, with, sessionId);
832 final AbstractJingleConnection connection = connections.get(id);
833 if (connection instanceof JingleRtpConnection) {
834 return new WeakReference<>((JingleRtpConnection) connection);
835 }
836 return null;
837 }
838
839 private void resendSessionProposals(final Account account) {
840 synchronized (this.rtpSessionProposals) {
841 for (final Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry :
842 this.rtpSessionProposals.entrySet()) {
843 final RtpSessionProposal proposal = entry.getKey();
844 if (entry.getValue() == DeviceDiscoveryState.SEARCHING
845 && proposal.account == account) {
846 Log.d(
847 Config.LOGTAG,
848 account.getJid().asBareJid()
849 + ": resending session proposal to "
850 + proposal.with);
851 final MessagePacket messagePacket =
852 mXmppConnectionService.getMessageGenerator().sessionProposal(proposal);
853 mXmppConnectionService.sendMessagePacket(account, messagePacket);
854 }
855 }
856 }
857 }
858
859 public void updateProposedSessionDiscovered(
860 Account account, Jid from, String sessionId, final DeviceDiscoveryState target) {
861 synchronized (this.rtpSessionProposals) {
862 final RtpSessionProposal sessionProposal =
863 getRtpSessionProposal(account, from.asBareJid(), sessionId);
864 final DeviceDiscoveryState currentState =
865 sessionProposal == null ? null : rtpSessionProposals.get(sessionProposal);
866 if (currentState == null) {
867 Log.d(Config.LOGTAG, "unable to find session proposal for session id " + sessionId);
868 return;
869 }
870 if (currentState == DeviceDiscoveryState.DISCOVERED) {
871 Log.d(
872 Config.LOGTAG,
873 "session proposal already at discovered. not going to fall back");
874 return;
875 }
876 this.rtpSessionProposals.put(sessionProposal, target);
877 final RtpEndUserState endUserState = target.toEndUserState();
878 toneManager.transition(endUserState, sessionProposal.media);
879 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
880 account, sessionProposal.with, sessionProposal.sessionId, endUserState);
881 Log.d(
882 Config.LOGTAG,
883 account.getJid().asBareJid()
884 + ": flagging session "
885 + sessionId
886 + " as "
887 + target);
888 }
889 }
890
891 public void rejectRtpSession(final String sessionId) {
892 for (final AbstractJingleConnection connection : this.connections.values()) {
893 if (connection.getId().sessionId.equals(sessionId)) {
894 if (connection instanceof JingleRtpConnection) {
895 try {
896 ((JingleRtpConnection) connection).rejectCall();
897 return;
898 } catch (final IllegalStateException e) {
899 Log.w(
900 Config.LOGTAG,
901 "race condition on rejecting call from notification",
902 e);
903 }
904 }
905 }
906 }
907 }
908
909 public void endRtpSession(final String sessionId) {
910 for (final AbstractJingleConnection connection : this.connections.values()) {
911 if (connection.getId().sessionId.equals(sessionId)) {
912 if (connection instanceof JingleRtpConnection) {
913 ((JingleRtpConnection) connection).endCall();
914 }
915 }
916 }
917 }
918
919 public void failProceed(Account account, final Jid with, final String sessionId, final String message) {
920 final AbstractJingleConnection.Id id =
921 AbstractJingleConnection.Id.of(account, with, sessionId);
922 final AbstractJingleConnection existingJingleConnection = connections.get(id);
923 if (existingJingleConnection instanceof JingleRtpConnection) {
924 ((JingleRtpConnection) existingJingleConnection).deliverFailedProceed(message);
925 }
926 }
927
928 void ensureConnectionIsRegistered(final AbstractJingleConnection connection) {
929 if (connections.containsValue(connection)) {
930 return;
931 }
932 final IllegalStateException e =
933 new IllegalStateException(
934 "JingleConnection has not been registered with connection manager");
935 Log.e(Config.LOGTAG, "ensureConnectionIsRegistered() failed. Going to throw", e);
936 throw e;
937 }
938
939 void setTerminalSessionState(
940 AbstractJingleConnection.Id id, final RtpEndUserState state, final Set<Media> media) {
941 this.terminatedSessions.put(
942 PersistableSessionId.of(id), new TerminatedRtpSession(state, media));
943 }
944
945 public TerminatedRtpSession getTerminalSessionState(final Jid with, final String sessionId) {
946 return this.terminatedSessions.getIfPresent(new PersistableSessionId(with, sessionId));
947 }
948
949 private static class PersistableSessionId {
950 private final Jid with;
951 private final String sessionId;
952
953 private PersistableSessionId(Jid with, String sessionId) {
954 this.with = with;
955 this.sessionId = sessionId;
956 }
957
958 public static PersistableSessionId of(AbstractJingleConnection.Id id) {
959 return new PersistableSessionId(id.with, id.sessionId);
960 }
961
962 @Override
963 public boolean equals(Object o) {
964 if (this == o) return true;
965 if (o == null || getClass() != o.getClass()) return false;
966 PersistableSessionId that = (PersistableSessionId) o;
967 return Objects.equal(with, that.with) && Objects.equal(sessionId, that.sessionId);
968 }
969
970 @Override
971 public int hashCode() {
972 return Objects.hashCode(with, sessionId);
973 }
974 }
975
976 public static class TerminatedRtpSession {
977 public final RtpEndUserState state;
978 public final Set<Media> media;
979
980 TerminatedRtpSession(RtpEndUserState state, Set<Media> media) {
981 this.state = state;
982 this.media = media;
983 }
984 }
985
986 public enum DeviceDiscoveryState {
987 SEARCHING,
988 SEARCHING_ACKNOWLEDGED,
989 DISCOVERED,
990 FAILED;
991
992 public RtpEndUserState toEndUserState() {
993 switch (this) {
994 case SEARCHING:
995 case SEARCHING_ACKNOWLEDGED:
996 return RtpEndUserState.FINDING_DEVICE;
997 case DISCOVERED:
998 return RtpEndUserState.RINGING;
999 default:
1000 return RtpEndUserState.CONNECTIVITY_ERROR;
1001 }
1002 }
1003 }
1004
1005 public static class RtpSessionProposal implements OngoingRtpSession {
1006 public final Jid with;
1007 public final String sessionId;
1008 public final Set<Media> media;
1009 private final Account account;
1010
1011 private RtpSessionProposal(Account account, Jid with, String sessionId) {
1012 this(account, with, sessionId, Collections.emptySet());
1013 }
1014
1015 private RtpSessionProposal(Account account, Jid with, String sessionId, Set<Media> media) {
1016 this.account = account;
1017 this.with = with;
1018 this.sessionId = sessionId;
1019 this.media = media;
1020 }
1021
1022 public static RtpSessionProposal of(Account account, Jid with, Set<Media> media) {
1023 return new RtpSessionProposal(account, with, nextRandomId(), media);
1024 }
1025
1026 @Override
1027 public boolean equals(Object o) {
1028 if (this == o) return true;
1029 if (o == null || getClass() != o.getClass()) return false;
1030 RtpSessionProposal proposal = (RtpSessionProposal) o;
1031 return Objects.equal(account.getJid(), proposal.account.getJid())
1032 && Objects.equal(with, proposal.with)
1033 && Objects.equal(sessionId, proposal.sessionId);
1034 }
1035
1036 @Override
1037 public int hashCode() {
1038 return Objects.hashCode(account.getJid(), with, sessionId);
1039 }
1040
1041 @Override
1042 public Account getAccount() {
1043 return account;
1044 }
1045
1046 @Override
1047 public Jid getWith() {
1048 return with;
1049 }
1050
1051 @Override
1052 public String getSessionId() {
1053 return sessionId;
1054 }
1055 }
1056}