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()
478 + ": retrieved out of order jingle message from "
479 + from
480 + message
481 + ", addressedDirectly="
482 + addressedDirectly);
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 String proposeJingleRtpSession(final Account account, final Jid with, final Set<Media> media) {
729 synchronized (this.rtpSessionProposals) {
730 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry :
731 this.rtpSessionProposals.entrySet()) {
732 RtpSessionProposal proposal = entry.getKey();
733 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
734 final DeviceDiscoveryState preexistingState = entry.getValue();
735 if (preexistingState != null
736 && preexistingState != DeviceDiscoveryState.FAILED) {
737 final RtpEndUserState endUserState = preexistingState.toEndUserState();
738 toneManager.transition(endUserState, media);
739 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
740 account,
741 with,
742 proposal.sessionId,
743 endUserState
744 );
745 return proposal.sessionId;
746 }
747 }
748 }
749 String busyCode = isBusy();
750 if (busyCode != null) {
751 String sessionId = hasMatchingRtpSession(account, with, media);
752 if (sessionId != null) {
753 Log.d(Config.LOGTAG, "ignoring request to propose jingle session because the other party already created one for us: " + sessionId);
754 return sessionId;
755 }
756 throw new IllegalStateException("There is already a running RTP session: " + busyCode);
757 }
758 final RtpSessionProposal proposal =
759 RtpSessionProposal.of(account, with.asBareJid(), media);
760 this.rtpSessionProposals.put(proposal, DeviceDiscoveryState.SEARCHING);
761 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
762 account, proposal.with, proposal.sessionId, RtpEndUserState.FINDING_DEVICE);
763 final MessagePacket messagePacket =
764 mXmppConnectionService.getMessageGenerator().sessionProposal(proposal);
765 mXmppConnectionService.sendMessagePacket(account, messagePacket);
766 return proposal.sessionId;
767 }
768 }
769
770 public boolean hasMatchingProposal(final Account account, final Jid with) {
771 synchronized (this.rtpSessionProposals) {
772 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry :
773 this.rtpSessionProposals.entrySet()) {
774 final RtpSessionProposal proposal = entry.getKey();
775 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
776 return true;
777 }
778 }
779 }
780 return false;
781 }
782
783 public void deliverIbbPacket(Account account, IqPacket packet) {
784 final String sid;
785 final Element payload;
786 if (packet.hasChild("open", Namespace.IBB)) {
787 payload = packet.findChild("open", Namespace.IBB);
788 sid = payload.getAttribute("sid");
789 } else if (packet.hasChild("data", Namespace.IBB)) {
790 payload = packet.findChild("data", Namespace.IBB);
791 sid = payload.getAttribute("sid");
792 } else if (packet.hasChild("close", Namespace.IBB)) {
793 payload = packet.findChild("close", Namespace.IBB);
794 sid = payload.getAttribute("sid");
795 } else {
796 payload = null;
797 sid = null;
798 }
799 if (sid != null) {
800 for (final AbstractJingleConnection connection : this.connections.values()) {
801 if (connection instanceof JingleFileTransferConnection) {
802 final JingleFileTransferConnection fileTransfer =
803 (JingleFileTransferConnection) connection;
804 final JingleTransport transport = fileTransfer.getTransport();
805 if (transport instanceof JingleInBandTransport) {
806 final JingleInBandTransport inBandTransport =
807 (JingleInBandTransport) transport;
808 if (inBandTransport.matches(account, sid)) {
809 inBandTransport.deliverPayload(packet, payload);
810 }
811 return;
812 }
813 }
814 }
815 }
816 Log.d(Config.LOGTAG, "unable to deliver ibb packet: " + packet.toString());
817 account.getXmppConnection()
818 .sendIqPacket(packet.generateResponse(IqPacket.TYPE.ERROR), null);
819 }
820
821 public void notifyRebound(final Account account) {
822 for (final AbstractJingleConnection connection : this.connections.values()) {
823 connection.notifyRebound();
824 }
825 final XmppConnection xmppConnection = account.getXmppConnection();
826 if (xmppConnection != null && xmppConnection.getFeatures().sm()) {
827 resendSessionProposals(account);
828 }
829 }
830
831 public WeakReference<JingleRtpConnection> findJingleRtpConnection(
832 Account account, Jid with, String sessionId) {
833 final AbstractJingleConnection.Id id =
834 AbstractJingleConnection.Id.of(account, with, sessionId);
835 final AbstractJingleConnection connection = connections.get(id);
836 if (connection instanceof JingleRtpConnection) {
837 return new WeakReference<>((JingleRtpConnection) connection);
838 }
839 return null;
840 }
841
842 private void resendSessionProposals(final Account account) {
843 synchronized (this.rtpSessionProposals) {
844 for (final Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry :
845 this.rtpSessionProposals.entrySet()) {
846 final RtpSessionProposal proposal = entry.getKey();
847 if (entry.getValue() == DeviceDiscoveryState.SEARCHING
848 && proposal.account == account) {
849 Log.d(
850 Config.LOGTAG,
851 account.getJid().asBareJid()
852 + ": resending session proposal to "
853 + proposal.with);
854 final MessagePacket messagePacket =
855 mXmppConnectionService.getMessageGenerator().sessionProposal(proposal);
856 mXmppConnectionService.sendMessagePacket(account, messagePacket);
857 }
858 }
859 }
860 }
861
862 public void updateProposedSessionDiscovered(
863 Account account, Jid from, String sessionId, final DeviceDiscoveryState target) {
864 synchronized (this.rtpSessionProposals) {
865 final RtpSessionProposal sessionProposal =
866 getRtpSessionProposal(account, from.asBareJid(), sessionId);
867 final DeviceDiscoveryState currentState =
868 sessionProposal == null ? null : rtpSessionProposals.get(sessionProposal);
869 if (currentState == null) {
870 Log.d(Config.LOGTAG, "unable to find session proposal for session id " + sessionId);
871 return;
872 }
873 if (currentState == DeviceDiscoveryState.DISCOVERED) {
874 Log.d(
875 Config.LOGTAG,
876 "session proposal already at discovered. not going to fall back");
877 return;
878 }
879 this.rtpSessionProposals.put(sessionProposal, target);
880 final RtpEndUserState endUserState = target.toEndUserState();
881 toneManager.transition(endUserState, sessionProposal.media);
882 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
883 account, sessionProposal.with, sessionProposal.sessionId, endUserState);
884 Log.d(
885 Config.LOGTAG,
886 account.getJid().asBareJid()
887 + ": flagging session "
888 + sessionId
889 + " as "
890 + target);
891 }
892 }
893
894 public void rejectRtpSession(final String sessionId) {
895 for (final AbstractJingleConnection connection : this.connections.values()) {
896 if (connection.getId().sessionId.equals(sessionId)) {
897 if (connection instanceof JingleRtpConnection) {
898 try {
899 ((JingleRtpConnection) connection).rejectCall();
900 return;
901 } catch (final IllegalStateException e) {
902 Log.w(
903 Config.LOGTAG,
904 "race condition on rejecting call from notification",
905 e);
906 }
907 }
908 }
909 }
910 }
911
912 public void endRtpSession(final String sessionId) {
913 for (final AbstractJingleConnection connection : this.connections.values()) {
914 if (connection.getId().sessionId.equals(sessionId)) {
915 if (connection instanceof JingleRtpConnection) {
916 ((JingleRtpConnection) connection).endCall();
917 }
918 }
919 }
920 }
921
922 public void failProceed(Account account, final Jid with, final String sessionId, final String message) {
923 final AbstractJingleConnection.Id id =
924 AbstractJingleConnection.Id.of(account, with, sessionId);
925 final AbstractJingleConnection existingJingleConnection = connections.get(id);
926 if (existingJingleConnection instanceof JingleRtpConnection) {
927 ((JingleRtpConnection) existingJingleConnection).deliverFailedProceed(message);
928 }
929 }
930
931 void ensureConnectionIsRegistered(final AbstractJingleConnection connection) {
932 if (connections.containsValue(connection)) {
933 return;
934 }
935 final IllegalStateException e =
936 new IllegalStateException(
937 "JingleConnection has not been registered with connection manager");
938 Log.e(Config.LOGTAG, "ensureConnectionIsRegistered() failed. Going to throw", e);
939 throw e;
940 }
941
942 void setTerminalSessionState(
943 AbstractJingleConnection.Id id, final RtpEndUserState state, final Set<Media> media) {
944 this.terminatedSessions.put(
945 PersistableSessionId.of(id), new TerminatedRtpSession(state, media));
946 }
947
948 public TerminatedRtpSession getTerminalSessionState(final Jid with, final String sessionId) {
949 return this.terminatedSessions.getIfPresent(new PersistableSessionId(with, sessionId));
950 }
951
952 private static class PersistableSessionId {
953 private final Jid with;
954 private final String sessionId;
955
956 private PersistableSessionId(Jid with, String sessionId) {
957 this.with = with;
958 this.sessionId = sessionId;
959 }
960
961 public static PersistableSessionId of(AbstractJingleConnection.Id id) {
962 return new PersistableSessionId(id.with, id.sessionId);
963 }
964
965 @Override
966 public boolean equals(Object o) {
967 if (this == o) return true;
968 if (o == null || getClass() != o.getClass()) return false;
969 PersistableSessionId that = (PersistableSessionId) o;
970 return Objects.equal(with, that.with) && Objects.equal(sessionId, that.sessionId);
971 }
972
973 @Override
974 public int hashCode() {
975 return Objects.hashCode(with, sessionId);
976 }
977 }
978
979 public static class TerminatedRtpSession {
980 public final RtpEndUserState state;
981 public final Set<Media> media;
982
983 TerminatedRtpSession(RtpEndUserState state, Set<Media> media) {
984 this.state = state;
985 this.media = media;
986 }
987 }
988
989 public enum DeviceDiscoveryState {
990 SEARCHING,
991 SEARCHING_ACKNOWLEDGED,
992 DISCOVERED,
993 FAILED;
994
995 public RtpEndUserState toEndUserState() {
996 switch (this) {
997 case SEARCHING:
998 case SEARCHING_ACKNOWLEDGED:
999 return RtpEndUserState.FINDING_DEVICE;
1000 case DISCOVERED:
1001 return RtpEndUserState.RINGING;
1002 default:
1003 return RtpEndUserState.CONNECTIVITY_ERROR;
1004 }
1005 }
1006 }
1007
1008 public static class RtpSessionProposal implements OngoingRtpSession {
1009 public final Jid with;
1010 public final String sessionId;
1011 public final Set<Media> media;
1012 private final Account account;
1013
1014 private RtpSessionProposal(Account account, Jid with, String sessionId) {
1015 this(account, with, sessionId, Collections.emptySet());
1016 }
1017
1018 private RtpSessionProposal(Account account, Jid with, String sessionId, Set<Media> media) {
1019 this.account = account;
1020 this.with = with;
1021 this.sessionId = sessionId;
1022 this.media = media;
1023 }
1024
1025 public static RtpSessionProposal of(Account account, Jid with, Set<Media> media) {
1026 return new RtpSessionProposal(account, with, nextRandomId(), media);
1027 }
1028
1029 @Override
1030 public boolean equals(Object o) {
1031 if (this == o) return true;
1032 if (o == null || getClass() != o.getClass()) return false;
1033 RtpSessionProposal proposal = (RtpSessionProposal) o;
1034 return Objects.equal(account.getJid(), proposal.account.getJid())
1035 && Objects.equal(with, proposal.with)
1036 && Objects.equal(sessionId, proposal.sessionId);
1037 }
1038
1039 @Override
1040 public int hashCode() {
1041 return Objects.hashCode(account.getJid(), with, sessionId);
1042 }
1043
1044 @Override
1045 public Account getAccount() {
1046 return account;
1047 }
1048
1049 @Override
1050 public Jid getWith() {
1051 return with;
1052 }
1053
1054 @Override
1055 public String getSessionId() {
1056 return sessionId;
1057 }
1058 }
1059}