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() != null || 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 String isBusy() {
142 if (mXmppConnectionService.isPhoneInCall()) {
143 return "isPhoneInCall";
144 }
145 for (AbstractJingleConnection connection : this.connections.values()) {
146 if (connection instanceof JingleRtpConnection) {
147 if (((JingleRtpConnection) connection).isTerminated()) {
148 continue;
149 }
150 return "connection !isTerminated";
151 }
152 }
153 synchronized (this.rtpSessionProposals) {
154 if (this.rtpSessionProposals.containsValue(DeviceDiscoveryState.DISCOVERED)) return "discovered";
155 if (this.rtpSessionProposals.containsValue(DeviceDiscoveryState.SEARCHING)) return "searching";
156 if (this.rtpSessionProposals.containsValue(DeviceDiscoveryState.SEARCHING_ACKNOWLEDGED)) return "searching_acknolwedged";
157 return null;
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 String hasMatchingRtpSession(final Account account, final Jid with, final Set<Media> media) {
196 for (AbstractJingleConnection connection : this.connections.values()) {
197 if (connection instanceof JingleRtpConnection) {
198 final JingleRtpConnection rtpConnection = (JingleRtpConnection) connection;
199 if (rtpConnection.isTerminated()) {
200 continue;
201 }
202 if (rtpConnection.getId().account == account
203 && rtpConnection.getId().with.asBareJid().equals(with.asBareJid())
204 && rtpConnection.getMedia().equals(media)) {
205 return rtpConnection.getId().sessionId;
206 }
207 }
208 }
209 return null;
210 }
211
212 private boolean isWithStrangerAndStrangerNotificationsAreOff(final Account account, Jid with) {
213 final boolean notifyForStrangers =
214 mXmppConnectionService.getNotificationService().notificationsFromStrangers();
215 if (notifyForStrangers) {
216 return false;
217 }
218 final Contact contact = account.getRoster().getContact(with);
219 return !contact.showInContactList();
220 }
221
222 ScheduledFuture<?> schedule(
223 final Runnable runnable, final long delay, final TimeUnit timeUnit) {
224 return SCHEDULED_EXECUTOR_SERVICE.schedule(runnable, delay, timeUnit);
225 }
226
227 void respondWithJingleError(
228 final Account account,
229 final IqPacket original,
230 String jingleCondition,
231 String condition,
232 String conditionType) {
233 final IqPacket response = original.generateResponse(IqPacket.TYPE.ERROR);
234 final Element error = response.addChild("error");
235 error.setAttribute("type", conditionType);
236 error.addChild(condition, "urn:ietf:params:xml:ns:xmpp-stanzas");
237 error.addChild(jingleCondition, Namespace.JINGLE_ERRORS);
238 account.getXmppConnection().sendIqPacket(response, null);
239 }
240
241 public void deliverMessage(
242 final Account account,
243 final Jid to,
244 final Jid from,
245 final Element message,
246 String remoteMsgId,
247 String serverMsgId,
248 long timestamp) {
249 Preconditions.checkArgument(Namespace.JINGLE_MESSAGE.equals(message.getNamespace()));
250 final String sessionId = message.getAttribute("id");
251 if (sessionId == null) {
252 return;
253 }
254 if ("accept".equals(message.getName()) || "reject".equals(message.getName())) {
255 for (AbstractJingleConnection connection : connections.values()) {
256 if (connection instanceof JingleRtpConnection) {
257 final JingleRtpConnection rtpConnection = (JingleRtpConnection) connection;
258 final AbstractJingleConnection.Id id = connection.getId();
259 if (id.account == account && id.sessionId.equals(sessionId)) {
260 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
261 return;
262 }
263 }
264 }
265 if ("accept".equals(message.getName())) return;
266 }
267 final boolean fromSelf = from.asBareJid().equals(account.getJid().asBareJid());
268 final boolean addressedDirectly = to != null && to.equals(account.getJid());
269 final AbstractJingleConnection.Id id;
270 if (fromSelf) {
271 if (to != null && to.isFullJid()) {
272 id = AbstractJingleConnection.Id.of(account, to, sessionId);
273 } else {
274 return;
275 }
276 } else {
277 id = AbstractJingleConnection.Id.of(account, from, sessionId);
278 }
279 final AbstractJingleConnection existingJingleConnection = connections.get(id);
280 if (existingJingleConnection != null) {
281 if (existingJingleConnection instanceof JingleRtpConnection) {
282 ((JingleRtpConnection) existingJingleConnection)
283 .deliveryMessage(from, message, serverMsgId, timestamp);
284 } else {
285 Log.d(
286 Config.LOGTAG,
287 account.getJid().asBareJid()
288 + ": "
289 + existingJingleConnection.getClass().getName()
290 + " does not support jingle messages");
291 }
292 return;
293 }
294
295 if (fromSelf) {
296 if ("proceed".equals(message.getName())) {
297 final Conversation c =
298 mXmppConnectionService.findOrCreateConversation(
299 account, id.with, false, false);
300 final Message previousBusy = c.findRtpSession(sessionId, Message.STATUS_RECEIVED);
301 if (previousBusy != null) {
302 previousBusy.setBody(new RtpSessionStatus(true, 0).toString());
303 if (serverMsgId != null) {
304 previousBusy.setServerMsgId(serverMsgId);
305 }
306 previousBusy.setTime(timestamp);
307 mXmppConnectionService.updateMessage(previousBusy, true);
308 Log.d(
309 Config.LOGTAG,
310 id.account.getJid().asBareJid()
311 + ": updated previous busy because call got picked up by another device");
312 return;
313 }
314 }
315 // TODO handle reject for cases where we don’t have carbon copies (normally reject is to
316 // be sent to own bare jid as well)
317 Log.d(
318 Config.LOGTAG,
319 account.getJid().asBareJid() + ": ignore jingle message from self");
320 return;
321 }
322
323 if ("propose".equals(message.getName())) {
324 final Propose propose = Propose.upgrade(message);
325 final List<GenericDescription> descriptions = propose.getDescriptions();
326 final Collection<RtpDescription> rtpDescriptions =
327 Collections2.transform(
328 Collections2.filter(descriptions, d -> d instanceof RtpDescription),
329 input -> (RtpDescription) input);
330 if (rtpDescriptions.size() > 0
331 && rtpDescriptions.size() == descriptions.size()
332 && isUsingClearNet(account)) {
333 final Collection<Media> media =
334 Collections2.transform(rtpDescriptions, RtpDescription::getMedia);
335 if (media.contains(Media.UNKNOWN)) {
336 Log.d(
337 Config.LOGTAG,
338 account.getJid().asBareJid()
339 + ": encountered unknown media in session proposal. "
340 + propose);
341 return;
342 }
343 final Optional<RtpSessionProposal> matchingSessionProposal =
344 findMatchingSessionProposal(account, id.with, ImmutableSet.copyOf(media));
345 if (matchingSessionProposal.isPresent()) {
346 final String ourSessionId = matchingSessionProposal.get().sessionId;
347 final String theirSessionId = id.sessionId;
348 if (ComparisonChain.start()
349 .compare(ourSessionId, theirSessionId)
350 .compare(
351 account.getJid().toEscapedString(),
352 id.with.toEscapedString())
353 .result()
354 > 0) {
355 Log.d(
356 Config.LOGTAG,
357 account.getJid().asBareJid()
358 + ": our session lost tie break. automatically accepting their session. winning Session="
359 + theirSessionId);
360 // TODO a retract for this reason should probably include some indication of
361 // tie break
362 retractSessionProposal(matchingSessionProposal.get());
363 final JingleRtpConnection rtpConnection =
364 new JingleRtpConnection(this, id, from);
365 this.connections.put(id, rtpConnection);
366 rtpConnection.setProposedMedia(ImmutableSet.copyOf(media));
367 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
368 } else {
369 Log.d(
370 Config.LOGTAG,
371 account.getJid().asBareJid()
372 + ": our session won tie break. waiting for other party to accept. winningSession="
373 + ourSessionId);
374 }
375 return;
376 }
377 final boolean stranger = isWithStrangerAndStrangerNotificationsAreOff(account, id.with);
378 if (isBusy() != null || stranger) {
379 writeLogMissedIncoming(account, id.with.asBareJid(), id.sessionId, serverMsgId, timestamp);
380 if (stranger) {
381 Log.d(
382 Config.LOGTAG,
383 id.account.getJid().asBareJid()
384 + ": ignoring call proposal from stranger "
385 + id.with);
386 return;
387 }
388 final int activeDevices = account.activeDevicesWithRtpCapability();
389 Log.d(Config.LOGTAG, "active devices with rtp capability: " + activeDevices);
390 if (activeDevices == 0) {
391 final MessagePacket reject =
392 mXmppConnectionService
393 .getMessageGenerator()
394 .sessionReject(from, sessionId);
395 mXmppConnectionService.sendMessagePacket(account, reject);
396 } else {
397 Log.d(
398 Config.LOGTAG,
399 id.account.getJid().asBareJid()
400 + ": ignoring proposal because busy on this device but there are other devices");
401 }
402 } else {
403 final JingleRtpConnection rtpConnection =
404 new JingleRtpConnection(this, id, from);
405 this.connections.put(id, rtpConnection);
406 rtpConnection.setProposedMedia(ImmutableSet.copyOf(media));
407 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
408 }
409 } else {
410 Log.d(
411 Config.LOGTAG,
412 account.getJid().asBareJid()
413 + ": unable to react to proposed session with "
414 + rtpDescriptions.size()
415 + " rtp descriptions of "
416 + descriptions.size()
417 + " total descriptions");
418 }
419 } else if (addressedDirectly && "proceed".equals(message.getName())) {
420 synchronized (rtpSessionProposals) {
421 final RtpSessionProposal proposal =
422 getRtpSessionProposal(account, from.asBareJid(), sessionId);
423 if (proposal != null) {
424 rtpSessionProposals.remove(proposal);
425 final JingleRtpConnection rtpConnection =
426 new JingleRtpConnection(this, id, account.getJid());
427 rtpConnection.setProposedMedia(proposal.media);
428 this.connections.put(id, rtpConnection);
429 rtpConnection.transitionOrThrow(AbstractJingleConnection.State.PROPOSED);
430 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
431 } else {
432 Log.d(
433 Config.LOGTAG,
434 account.getJid().asBareJid()
435 + ": no rtp session proposal found for "
436 + from
437 + " to deliver proceed");
438 if (remoteMsgId == null) {
439 return;
440 }
441 final MessagePacket errorMessage = new MessagePacket();
442 errorMessage.setTo(from);
443 errorMessage.setId(remoteMsgId);
444 errorMessage.setType(MessagePacket.TYPE_ERROR);
445 final Element error = errorMessage.addChild("error");
446 error.setAttribute("code", "404");
447 error.setAttribute("type", "cancel");
448 error.addChild("item-not-found", "urn:ietf:params:xml:ns:xmpp-stanzas");
449 mXmppConnectionService.sendMessagePacket(account, errorMessage);
450 }
451 }
452 } else if (addressedDirectly && "reject".equals(message.getName())) {
453 final RtpSessionProposal proposal =
454 getRtpSessionProposal(account, from.asBareJid(), sessionId);
455 synchronized (rtpSessionProposals) {
456 if (proposal != null && rtpSessionProposals.remove(proposal) != null) {
457 writeLogMissedOutgoing(
458 account, proposal.with, proposal.sessionId, serverMsgId, timestamp);
459 toneManager.transition(RtpEndUserState.DECLINED_OR_BUSY, proposal.media);
460 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
461 account,
462 proposal.with,
463 proposal.sessionId,
464 RtpEndUserState.DECLINED_OR_BUSY);
465 } else {
466 Log.d(
467 Config.LOGTAG,
468 account.getJid().asBareJid()
469 + ": no rtp session proposal found for "
470 + from
471 + " to deliver reject");
472 }
473 }
474 } else {
475 Log.d(
476 Config.LOGTAG,
477 account.getJid().asBareJid()
478 + ": retrieved out of order jingle message"
479 + message);
480 }
481 }
482
483 private RtpSessionProposal getRtpSessionProposal(
484 final Account account, Jid from, String sessionId) {
485 for (RtpSessionProposal rtpSessionProposal : rtpSessionProposals.keySet()) {
486 if (rtpSessionProposal.sessionId.equals(sessionId)
487 && rtpSessionProposal.with.equals(from)
488 && rtpSessionProposal.account.getJid().equals(account.getJid())) {
489 return rtpSessionProposal;
490 }
491 }
492 return null;
493 }
494
495 private void writeLogMissedOutgoing(
496 final Account account,
497 Jid with,
498 final String sessionId,
499 String serverMsgId,
500 long timestamp) {
501 final Conversation conversation =
502 mXmppConnectionService.findOrCreateConversation(
503 account, with.asBareJid(), false, false);
504 final Message message =
505 new Message(conversation, Message.STATUS_SEND, Message.TYPE_RTP_SESSION, sessionId);
506 message.setBody(new RtpSessionStatus(false, 0).toString());
507 message.setServerMsgId(serverMsgId);
508 message.setTime(timestamp);
509 writeMessage(message);
510 }
511
512 private void writeLogMissedIncoming(
513 final Account account,
514 Jid with,
515 final String sessionId,
516 String serverMsgId,
517 long timestamp) {
518 final Conversation conversation =
519 mXmppConnectionService.findOrCreateConversation(
520 account, with.asBareJid(), false, false);
521 final Message message =
522 new Message(
523 conversation, Message.STATUS_RECEIVED, Message.TYPE_RTP_SESSION, sessionId);
524 message.setBody(new RtpSessionStatus(false, 0).toString());
525 message.setServerMsgId(serverMsgId);
526 message.setTime(timestamp);
527 writeMessage(message);
528 }
529
530 private void writeMessage(final Message message) {
531 final Conversational conversational = message.getConversation();
532 if (conversational instanceof Conversation) {
533 ((Conversation) conversational).add(message);
534 mXmppConnectionService.databaseBackend.createMessage(message);
535 mXmppConnectionService.updateConversationUi();
536 } else {
537 throw new IllegalStateException("Somehow the conversation in a message was a stub");
538 }
539 }
540
541 public void startJingleFileTransfer(final Message message) {
542 Preconditions.checkArgument(
543 message.isFileOrImage(), "Message is not of type file or image");
544 final Transferable old = message.getTransferable();
545 if (old != null) {
546 old.cancel();
547 }
548 final Account account = message.getConversation().getAccount();
549 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(message);
550 final JingleFileTransferConnection connection =
551 new JingleFileTransferConnection(this, id, account.getJid());
552 mXmppConnectionService.markMessage(message, Message.STATUS_WAITING);
553 this.connections.put(id, connection);
554 connection.init(message);
555 }
556
557 public Optional<OngoingRtpSession> getOngoingRtpConnection(final Contact contact) {
558 for (final Map.Entry<AbstractJingleConnection.Id, AbstractJingleConnection> entry :
559 this.connections.entrySet()) {
560 if (entry.getValue() instanceof JingleRtpConnection) {
561 final AbstractJingleConnection.Id id = entry.getKey();
562 if (id.account == contact.getAccount()
563 && id.with.asBareJid().equals(contact.getJid().asBareJid())) {
564 return Optional.of(id);
565 }
566 }
567 }
568 synchronized (this.rtpSessionProposals) {
569 for (final Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry :
570 this.rtpSessionProposals.entrySet()) {
571 final RtpSessionProposal proposal = entry.getKey();
572 if (proposal.account == contact.getAccount()
573 && contact.getJid().asBareJid().equals(proposal.with)) {
574 final DeviceDiscoveryState preexistingState = entry.getValue();
575 if (preexistingState != null
576 && preexistingState != DeviceDiscoveryState.FAILED) {
577 return Optional.of(proposal);
578 }
579 }
580 }
581 }
582 return Optional.absent();
583 }
584
585 void finishConnection(final AbstractJingleConnection connection) {
586 this.connections.remove(connection.getId());
587 }
588
589 void finishConnectionOrThrow(final AbstractJingleConnection connection) {
590 final AbstractJingleConnection.Id id = connection.getId();
591 if (this.connections.remove(id) == null) {
592 throw new IllegalStateException(
593 String.format("Unable to finish connection with id=%s", id.toString()));
594 }
595 }
596
597 public boolean fireJingleRtpConnectionStateUpdates() {
598 boolean firedUpdates = false;
599 for (final AbstractJingleConnection connection : this.connections.values()) {
600 if (connection instanceof JingleRtpConnection) {
601 final JingleRtpConnection jingleRtpConnection = (JingleRtpConnection) connection;
602 if (jingleRtpConnection.isTerminated()) {
603 continue;
604 }
605 jingleRtpConnection.fireStateUpdate();
606 firedUpdates = true;
607 }
608 }
609 return firedUpdates;
610 }
611
612 void getPrimaryCandidate(
613 final Account account,
614 final boolean initiator,
615 final OnPrimaryCandidateFound listener) {
616 if (Config.DISABLE_PROXY_LOOKUP) {
617 listener.onPrimaryCandidateFound(false, null);
618 return;
619 }
620 if (!this.primaryCandidates.containsKey(account.getJid().asBareJid())) {
621 final Jid proxy =
622 account.getXmppConnection().findDiscoItemByFeature(Namespace.BYTE_STREAMS);
623 if (proxy != null) {
624 IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
625 iq.setTo(proxy);
626 iq.query(Namespace.BYTE_STREAMS);
627 account.getXmppConnection()
628 .sendIqPacket(
629 iq,
630 new OnIqPacketReceived() {
631
632 @Override
633 public void onIqPacketReceived(
634 Account account, IqPacket packet) {
635 final Element streamhost =
636 packet.query()
637 .findChild(
638 "streamhost",
639 Namespace.BYTE_STREAMS);
640 final String host =
641 streamhost == null
642 ? null
643 : streamhost.getAttribute("host");
644 final String port =
645 streamhost == null
646 ? null
647 : streamhost.getAttribute("port");
648 if (host != null && port != null) {
649 try {
650 JingleCandidate candidate =
651 new JingleCandidate(nextRandomId(), true);
652 candidate.setHost(host);
653 candidate.setPort(Integer.parseInt(port));
654 candidate.setType(JingleCandidate.TYPE_PROXY);
655 candidate.setJid(proxy);
656 candidate.setPriority(
657 655360 + (initiator ? 30 : 0));
658 primaryCandidates.put(
659 account.getJid().asBareJid(), candidate);
660 listener.onPrimaryCandidateFound(true, candidate);
661 } catch (final NumberFormatException e) {
662 listener.onPrimaryCandidateFound(false, null);
663 }
664 } else {
665 listener.onPrimaryCandidateFound(false, null);
666 }
667 }
668 });
669 } else {
670 listener.onPrimaryCandidateFound(false, null);
671 }
672
673 } else {
674 listener.onPrimaryCandidateFound(
675 true, this.primaryCandidates.get(account.getJid().asBareJid()));
676 }
677 }
678
679 public void retractSessionProposal(final Account account, final Jid with) {
680 synchronized (this.rtpSessionProposals) {
681 RtpSessionProposal matchingProposal = null;
682 for (RtpSessionProposal proposal : this.rtpSessionProposals.keySet()) {
683 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
684 matchingProposal = proposal;
685 break;
686 }
687 }
688 if (matchingProposal != null) {
689 retractSessionProposal(matchingProposal);
690 }
691 }
692 }
693
694 private void retractSessionProposal(RtpSessionProposal rtpSessionProposal) {
695 final Account account = rtpSessionProposal.account;
696 toneManager.transition(RtpEndUserState.ENDED, rtpSessionProposal.media);
697 Log.d(
698 Config.LOGTAG,
699 account.getJid().asBareJid()
700 + ": retracting rtp session proposal with "
701 + rtpSessionProposal.with);
702 this.rtpSessionProposals.remove(rtpSessionProposal);
703 final MessagePacket messagePacket =
704 mXmppConnectionService.getMessageGenerator().sessionRetract(rtpSessionProposal);
705 writeLogMissedOutgoing(
706 account,
707 rtpSessionProposal.with,
708 rtpSessionProposal.sessionId,
709 null,
710 System.currentTimeMillis());
711 mXmppConnectionService.sendMessagePacket(account, messagePacket);
712 }
713
714 public String initializeRtpSession(
715 final Account account, final Jid with, final Set<Media> media) {
716 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, with);
717 final JingleRtpConnection rtpConnection =
718 new JingleRtpConnection(this, id, account.getJid());
719 rtpConnection.setProposedMedia(media);
720 this.connections.put(id, rtpConnection);
721 rtpConnection.sendSessionInitiate();
722 return id.sessionId;
723 }
724
725 public String proposeJingleRtpSession(final Account account, final Jid with, final Set<Media> media) {
726 synchronized (this.rtpSessionProposals) {
727 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry :
728 this.rtpSessionProposals.entrySet()) {
729 RtpSessionProposal proposal = entry.getKey();
730 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
731 final DeviceDiscoveryState preexistingState = entry.getValue();
732 if (preexistingState != null
733 && preexistingState != DeviceDiscoveryState.FAILED) {
734 final RtpEndUserState endUserState = preexistingState.toEndUserState();
735 toneManager.transition(endUserState, media);
736 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
737 account,
738 with,
739 proposal.sessionId,
740 endUserState
741 );
742 return proposal.sessionId;
743 }
744 }
745 }
746 String busyCode = isBusy();
747 if (busyCode != null) {
748 String sessionId = hasMatchingRtpSession(account, with, media);
749 if (sessionId != null) {
750 Log.d(Config.LOGTAG, "ignoring request to propose jingle session because the other party already created one for us: " + sessionId);
751 return sessionId;
752 }
753 throw new IllegalStateException("There is already a running RTP session: " + busyCode);
754 }
755 final RtpSessionProposal proposal =
756 RtpSessionProposal.of(account, with.asBareJid(), media);
757 this.rtpSessionProposals.put(proposal, DeviceDiscoveryState.SEARCHING);
758 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
759 account, proposal.with, proposal.sessionId, RtpEndUserState.FINDING_DEVICE);
760 final MessagePacket messagePacket =
761 mXmppConnectionService.getMessageGenerator().sessionProposal(proposal);
762 mXmppConnectionService.sendMessagePacket(account, messagePacket);
763 return proposal.sessionId;
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}