1package eu.siacs.conversations.xmpp.jingle;
2
3import android.util.Base64;
4import android.util.Log;
5
6import com.google.common.base.Objects;
7import com.google.common.base.Optional;
8import com.google.common.base.Preconditions;
9import com.google.common.cache.Cache;
10import com.google.common.cache.CacheBuilder;
11import com.google.common.collect.Collections2;
12import com.google.common.collect.ComparisonChain;
13import com.google.common.collect.ImmutableSet;
14
15import java.lang.ref.WeakReference;
16import java.security.SecureRandom;
17import java.util.Collection;
18import java.util.Collections;
19import java.util.HashMap;
20import java.util.List;
21import java.util.Map;
22import java.util.Set;
23import java.util.concurrent.ConcurrentHashMap;
24import java.util.concurrent.Executors;
25import java.util.concurrent.ScheduledExecutorService;
26import java.util.concurrent.ScheduledFuture;
27import java.util.concurrent.TimeUnit;
28
29import eu.siacs.conversations.Config;
30import eu.siacs.conversations.entities.Account;
31import eu.siacs.conversations.entities.Contact;
32import eu.siacs.conversations.entities.Conversation;
33import eu.siacs.conversations.entities.Conversational;
34import eu.siacs.conversations.entities.Message;
35import eu.siacs.conversations.entities.RtpSessionStatus;
36import eu.siacs.conversations.entities.Transferable;
37import eu.siacs.conversations.services.AbstractConnectionManager;
38import eu.siacs.conversations.services.XmppConnectionService;
39import eu.siacs.conversations.xml.Element;
40import eu.siacs.conversations.xml.Namespace;
41import eu.siacs.conversations.xmpp.Jid;
42import eu.siacs.conversations.xmpp.OnIqPacketReceived;
43import eu.siacs.conversations.xmpp.jingle.stanzas.Content;
44import eu.siacs.conversations.xmpp.jingle.stanzas.FileTransferDescription;
45import eu.siacs.conversations.xmpp.jingle.stanzas.GenericDescription;
46import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
47import eu.siacs.conversations.xmpp.jingle.stanzas.Propose;
48import eu.siacs.conversations.xmpp.jingle.stanzas.Reason;
49import eu.siacs.conversations.xmpp.jingle.stanzas.RtpDescription;
50import eu.siacs.conversations.xmpp.stanzas.IqPacket;
51import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
52
53public class JingleConnectionManager extends AbstractConnectionManager {
54 static final ScheduledExecutorService SCHEDULED_EXECUTOR_SERVICE = Executors.newSingleThreadScheduledExecutor();
55 final ToneManager toneManager;
56 private final HashMap<RtpSessionProposal, DeviceDiscoveryState> rtpSessionProposals = new HashMap<>();
57 private final ConcurrentHashMap<AbstractJingleConnection.Id, AbstractJingleConnection> connections = new ConcurrentHashMap<>();
58
59 private final Cache<PersistableSessionId, TerminatedRtpSession> terminatedSessions = CacheBuilder.newBuilder()
60 .expireAfterWrite(24, TimeUnit.HOURS)
61 .build();
62
63 private final HashMap<Jid, JingleCandidate> primaryCandidates = new HashMap<>();
64
65 public JingleConnectionManager(XmppConnectionService service) {
66 super(service);
67 this.toneManager = new ToneManager(service);
68 }
69
70 static String nextRandomId() {
71 final byte[] id = new byte[16];
72 new SecureRandom().nextBytes(id);
73 return Base64.encodeToString(id, Base64.NO_WRAP | Base64.NO_PADDING);
74 }
75
76 public void deliverPacket(final Account account, final JinglePacket packet) {
77 final String sessionId = packet.getSessionId();
78 if (sessionId == null) {
79 respondWithJingleError(account, packet, "unknown-session", "item-not-found", "cancel");
80 return;
81 }
82 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, packet);
83 final AbstractJingleConnection existingJingleConnection = connections.get(id);
84 if (existingJingleConnection != null) {
85 existingJingleConnection.deliverPacket(packet);
86 } else if (packet.getAction() == JinglePacket.Action.SESSION_INITIATE) {
87 final Jid from = packet.getFrom();
88 final Content content = packet.getJingleContent();
89 final String descriptionNamespace = content == null ? null : content.getDescriptionNamespace();
90 final AbstractJingleConnection connection;
91 if (FileTransferDescription.NAMESPACES.contains(descriptionNamespace)) {
92 connection = new JingleFileTransferConnection(this, id, from);
93 } else if (Namespace.JINGLE_APPS_RTP.equals(descriptionNamespace) && isUsingClearNet(account)) {
94 final boolean sessionEnded = this.terminatedSessions.asMap().containsKey(PersistableSessionId.of(id));
95 final boolean stranger = isWithStrangerAndStrangerNotificationsAreOff(account, id.with);
96 if (isBusy() || sessionEnded || stranger) {
97 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": rejected session with " + id.with + " because busy. sessionEnded=" + sessionEnded + ", stranger=" + stranger);
98 mXmppConnectionService.sendIqPacket(account, packet.generateResponse(IqPacket.TYPE.RESULT), null);
99 final JinglePacket sessionTermination = new JinglePacket(JinglePacket.Action.SESSION_TERMINATE, id.sessionId);
100 sessionTermination.setTo(id.with);
101 sessionTermination.setReason(Reason.BUSY, null);
102 mXmppConnectionService.sendIqPacket(account, sessionTermination, null);
103 return;
104 }
105 connection = new JingleRtpConnection(this, id, from);
106 } else {
107 respondWithJingleError(account, packet, "unsupported-info", "feature-not-implemented", "cancel");
108 return;
109 }
110 connections.put(id, connection);
111 mXmppConnectionService.updateConversationUi();
112 connection.deliverPacket(packet);
113 } else {
114 Log.d(Config.LOGTAG, "unable to route jingle packet: " + packet);
115 respondWithJingleError(account, packet, "unknown-session", "item-not-found", "cancel");
116 }
117 }
118
119 private boolean isUsingClearNet(final Account account) {
120 return !account.isOnion() && !mXmppConnectionService.useTorToConnect();
121 }
122
123 public boolean isBusy() {
124 if (mXmppConnectionService.isPhoneInCall()) {
125 return true;
126 }
127 for (AbstractJingleConnection connection : this.connections.values()) {
128 if (connection instanceof JingleRtpConnection) {
129 if (((JingleRtpConnection) connection).isTerminated()) {
130 continue;
131 }
132 return true;
133 }
134 }
135 synchronized (this.rtpSessionProposals) {
136 return this.rtpSessionProposals.containsValue(DeviceDiscoveryState.DISCOVERED) || this.rtpSessionProposals.containsValue(DeviceDiscoveryState.SEARCHING);
137 }
138 }
139
140 public void notifyPhoneCallStarted() {
141 for (AbstractJingleConnection connection : connections.values()) {
142 if (connection instanceof JingleRtpConnection) {
143 final JingleRtpConnection rtpConnection = (JingleRtpConnection) connection;
144 if (rtpConnection.isTerminated()) {
145 continue;
146 }
147 rtpConnection.notifyPhoneCall();
148 }
149 }
150 }
151
152 private Optional<RtpSessionProposal> findMatchingSessionProposal(final Account account, final Jid with, final Set<Media> media) {
153 synchronized (this.rtpSessionProposals) {
154 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry : this.rtpSessionProposals.entrySet()) {
155 final RtpSessionProposal proposal = entry.getKey();
156 final DeviceDiscoveryState state = entry.getValue();
157 final boolean openProposal = state == DeviceDiscoveryState.DISCOVERED || state == DeviceDiscoveryState.SEARCHING;
158 if (openProposal
159 && proposal.account == account
160 && proposal.with.equals(with.asBareJid())
161 && proposal.media.equals(media)) {
162 return Optional.of(proposal);
163 }
164 }
165 }
166 return Optional.absent();
167 }
168
169 private boolean hasMatchingRtpSession(final Account account, final Jid with, final Set<Media> media) {
170 for (AbstractJingleConnection connection : this.connections.values()) {
171 if (connection instanceof JingleRtpConnection) {
172 final JingleRtpConnection rtpConnection = (JingleRtpConnection) connection;
173 if (rtpConnection.isTerminated()) {
174 continue;
175 }
176 if (rtpConnection.getId().account == account
177 && rtpConnection.getId().with.asBareJid().equals(with.asBareJid())
178 && rtpConnection.getMedia().equals(media)) {
179 return true;
180 }
181 }
182 }
183 return false;
184 }
185
186 private boolean isWithStrangerAndStrangerNotificationsAreOff(final Account account, Jid with) {
187 final boolean notifyForStrangers = mXmppConnectionService.getNotificationService().notificationsFromStrangers();
188 if (notifyForStrangers) {
189 return false;
190 }
191 final Contact contact = account.getRoster().getContact(with);
192 return !contact.showInContactList();
193 }
194
195 ScheduledFuture<?> schedule(final Runnable runnable, final long delay, final TimeUnit timeUnit) {
196 return SCHEDULED_EXECUTOR_SERVICE.schedule(runnable, delay, timeUnit);
197 }
198
199 void respondWithJingleError(final Account account, final IqPacket original, String jingleCondition, String condition, String conditionType) {
200 final IqPacket response = original.generateResponse(IqPacket.TYPE.ERROR);
201 final Element error = response.addChild("error");
202 error.setAttribute("type", conditionType);
203 error.addChild(condition, "urn:ietf:params:xml:ns:xmpp-stanzas");
204 error.addChild(jingleCondition, "urn:xmpp:jingle:errors:1");
205 account.getXmppConnection().sendIqPacket(response, null);
206 }
207
208 public void deliverMessage(final Account account, final Jid to, final Jid from, final Element message, String remoteMsgId, String serverMsgId, long timestamp) {
209 Preconditions.checkArgument(Namespace.JINGLE_MESSAGE.equals(message.getNamespace()));
210 final String sessionId = message.getAttribute("id");
211 if (sessionId == null) {
212 return;
213 }
214 if ("accept".equals(message.getName())) {
215 for (AbstractJingleConnection connection : connections.values()) {
216 if (connection instanceof JingleRtpConnection) {
217 final JingleRtpConnection rtpConnection = (JingleRtpConnection) connection;
218 final AbstractJingleConnection.Id id = connection.getId();
219 if (id.account == account && id.sessionId.equals(sessionId)) {
220 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
221 return;
222 }
223 }
224 }
225 return;
226 }
227 final boolean fromSelf = from.asBareJid().equals(account.getJid().asBareJid());
228 final boolean addressedDirectly = to != null && to.equals(account.getJid());
229 final AbstractJingleConnection.Id id;
230 if (fromSelf) {
231 if (to != null && to.isFullJid()) {
232 id = AbstractJingleConnection.Id.of(account, to, sessionId);
233 } else {
234 return;
235 }
236 } else {
237 id = AbstractJingleConnection.Id.of(account, from, sessionId);
238 }
239 final AbstractJingleConnection existingJingleConnection = connections.get(id);
240 if (existingJingleConnection != null) {
241 if (existingJingleConnection instanceof JingleRtpConnection) {
242 ((JingleRtpConnection) existingJingleConnection).deliveryMessage(from, message, serverMsgId, timestamp);
243 } else {
244 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": " + existingJingleConnection.getClass().getName() + " does not support jingle messages");
245 }
246 return;
247 }
248
249 if (fromSelf) {
250 if ("proceed".equals(message.getName())) {
251 final Conversation c = mXmppConnectionService.findOrCreateConversation(account, id.with, false, false);
252 final Message previousBusy = c.findRtpSession(sessionId, Message.STATUS_RECEIVED);
253 if (previousBusy != null) {
254 previousBusy.setBody(new RtpSessionStatus(true, 0).toString());
255 if (serverMsgId != null) {
256 previousBusy.setServerMsgId(serverMsgId);
257 }
258 previousBusy.setTime(timestamp);
259 mXmppConnectionService.updateMessage(previousBusy, true);
260 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": updated previous busy because call got picked up by another device");
261 return;
262 }
263 }
264 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignore jingle message from self");
265 return;
266 }
267
268 if ("propose".equals(message.getName())) {
269 final Propose propose = Propose.upgrade(message);
270 final List<GenericDescription> descriptions = propose.getDescriptions();
271 final Collection<RtpDescription> rtpDescriptions = Collections2.transform(
272 Collections2.filter(descriptions, d -> d instanceof RtpDescription),
273 input -> (RtpDescription) input
274 );
275 if (rtpDescriptions.size() > 0 && rtpDescriptions.size() == descriptions.size() && isUsingClearNet(account)) {
276 final Collection<Media> media = Collections2.transform(rtpDescriptions, RtpDescription::getMedia);
277 if (media.contains(Media.UNKNOWN)) {
278 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": encountered unknown media in session proposal. " + propose);
279 return;
280 }
281 final Optional<RtpSessionProposal> matchingSessionProposal = findMatchingSessionProposal(account, id.with, ImmutableSet.copyOf(media));
282 if (matchingSessionProposal.isPresent()) {
283 final String ourSessionId = matchingSessionProposal.get().sessionId;
284 final String theirSessionId = id.sessionId;
285 if (ComparisonChain.start()
286 .compare(ourSessionId, theirSessionId)
287 .compare(account.getJid().toEscapedString(), id.with.toEscapedString())
288 .result() > 0) {
289 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": our session lost tie break. automatically accepting their session. winning Session=" + theirSessionId);
290 //TODO a retract for this reason should probably include some indication of tie break
291 retractSessionProposal(matchingSessionProposal.get());
292 final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, from);
293 this.connections.put(id, rtpConnection);
294 rtpConnection.setProposedMedia(ImmutableSet.copyOf(media));
295 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
296 } else {
297 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": our session won tie break. waiting for other party to accept. winningSession=" + ourSessionId);
298 }
299 return;
300 }
301 final boolean stranger = isWithStrangerAndStrangerNotificationsAreOff(account, id.with);
302 if (isBusy() || stranger) {
303 writeLogMissedIncoming(account, id.with.asBareJid(), id.sessionId, serverMsgId, timestamp);
304 if (stranger) {
305 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring call proposal from stranger " + id.with);
306 return;
307 }
308 final int activeDevices = account.activeDevicesWithRtpCapability();
309 Log.d(Config.LOGTAG, "active devices with rtp capability: " + activeDevices);
310 if (activeDevices == 0) {
311 final MessagePacket reject = mXmppConnectionService.getMessageGenerator().sessionReject(from, sessionId);
312 mXmppConnectionService.sendMessagePacket(account, reject);
313 } else {
314 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring proposal because busy on this device but there are other devices");
315 }
316 } else {
317 final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, from);
318 this.connections.put(id, rtpConnection);
319 rtpConnection.setProposedMedia(ImmutableSet.copyOf(media));
320 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
321 }
322 } else {
323 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to react to proposed session with " + rtpDescriptions.size() + " rtp descriptions of " + descriptions.size() + " total descriptions");
324 }
325 } else if (addressedDirectly && "proceed".equals(message.getName())) {
326 synchronized (rtpSessionProposals) {
327 final RtpSessionProposal proposal = getRtpSessionProposal(account, from.asBareJid(), sessionId);
328 if (proposal != null) {
329 rtpSessionProposals.remove(proposal);
330 final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, account.getJid());
331 rtpConnection.setProposedMedia(proposal.media);
332 this.connections.put(id, rtpConnection);
333 rtpConnection.transitionOrThrow(AbstractJingleConnection.State.PROPOSED);
334 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
335 } else {
336 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": no rtp session proposal found for " + from + " to deliver proceed");
337 if (remoteMsgId == null) {
338 return;
339 }
340 final MessagePacket errorMessage = new MessagePacket();
341 errorMessage.setTo(from);
342 errorMessage.setId(remoteMsgId);
343 errorMessage.setType(MessagePacket.TYPE_ERROR);
344 final Element error = errorMessage.addChild("error");
345 error.setAttribute("code", "404");
346 error.setAttribute("type", "cancel");
347 error.addChild("item-not-found", "urn:ietf:params:xml:ns:xmpp-stanzas");
348 mXmppConnectionService.sendMessagePacket(account, errorMessage);
349 }
350 }
351 } else if (addressedDirectly && "reject".equals(message.getName())) {
352 final RtpSessionProposal proposal = getRtpSessionProposal(account, from.asBareJid(), sessionId);
353 synchronized (rtpSessionProposals) {
354 if (proposal != null && rtpSessionProposals.remove(proposal) != null) {
355 writeLogMissedOutgoing(account, proposal.with, proposal.sessionId, serverMsgId, timestamp);
356 toneManager.transition(RtpEndUserState.DECLINED_OR_BUSY, proposal.media);
357 mXmppConnectionService.notifyJingleRtpConnectionUpdate(account, proposal.with, proposal.sessionId, RtpEndUserState.DECLINED_OR_BUSY);
358 } else {
359 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": no rtp session proposal found for " + from + " to deliver reject");
360 }
361 }
362 } else {
363 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": retrieved out of order jingle message"+message);
364 }
365
366 }
367
368 private RtpSessionProposal getRtpSessionProposal(final Account account, Jid from, String sessionId) {
369 for (RtpSessionProposal rtpSessionProposal : rtpSessionProposals.keySet()) {
370 if (rtpSessionProposal.sessionId.equals(sessionId) && rtpSessionProposal.with.equals(from) && rtpSessionProposal.account.getJid().equals(account.getJid())) {
371 return rtpSessionProposal;
372 }
373 }
374 return null;
375 }
376
377 private void writeLogMissedOutgoing(final Account account, Jid with, final String sessionId, String serverMsgId, long timestamp) {
378 final Conversation conversation = mXmppConnectionService.findOrCreateConversation(
379 account,
380 with.asBareJid(),
381 false,
382 false
383 );
384 final Message message = new Message(
385 conversation,
386 Message.STATUS_SEND,
387 Message.TYPE_RTP_SESSION,
388 sessionId
389 );
390 message.setBody(new RtpSessionStatus(false, 0).toString());
391 message.setServerMsgId(serverMsgId);
392 message.setTime(timestamp);
393 writeMessage(message);
394 }
395
396 private void writeLogMissedIncoming(final Account account, Jid with, final String sessionId, String serverMsgId, long timestamp) {
397 final Conversation conversation = mXmppConnectionService.findOrCreateConversation(
398 account,
399 with.asBareJid(),
400 false,
401 false
402 );
403 final Message message = new Message(
404 conversation,
405 Message.STATUS_RECEIVED,
406 Message.TYPE_RTP_SESSION,
407 sessionId
408 );
409 message.setBody(new RtpSessionStatus(false, 0).toString());
410 message.setServerMsgId(serverMsgId);
411 message.setTime(timestamp);
412 writeMessage(message);
413 }
414
415 private void writeMessage(final Message message) {
416 final Conversational conversational = message.getConversation();
417 if (conversational instanceof Conversation) {
418 ((Conversation) conversational).add(message);
419 mXmppConnectionService.databaseBackend.createMessage(message);
420 mXmppConnectionService.updateConversationUi();
421 } else {
422 throw new IllegalStateException("Somehow the conversation in a message was a stub");
423 }
424 }
425
426 public void startJingleFileTransfer(final Message message) {
427 Preconditions.checkArgument(message.isFileOrImage(), "Message is not of type file or image");
428 final Transferable old = message.getTransferable();
429 if (old != null) {
430 old.cancel();
431 }
432 final Account account = message.getConversation().getAccount();
433 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(message);
434 final JingleFileTransferConnection connection = new JingleFileTransferConnection(this, id, account.getJid());
435 mXmppConnectionService.markMessage(message, Message.STATUS_WAITING);
436 this.connections.put(id, connection);
437 connection.init(message);
438 }
439
440 public Optional<OngoingRtpSession> getOngoingRtpConnection(final Contact contact) {
441 for (final Map.Entry<AbstractJingleConnection.Id, AbstractJingleConnection> entry : this.connections.entrySet()) {
442 if (entry.getValue() instanceof JingleRtpConnection) {
443 final AbstractJingleConnection.Id id = entry.getKey();
444 if (id.account == contact.getAccount() && id.with.asBareJid().equals(contact.getJid().asBareJid())) {
445 return Optional.of(id);
446 }
447 }
448 }
449 synchronized (this.rtpSessionProposals) {
450 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry : this.rtpSessionProposals.entrySet()) {
451 RtpSessionProposal proposal = entry.getKey();
452 if (proposal.account == contact.getAccount() && contact.getJid().asBareJid().equals(proposal.with)) {
453 final DeviceDiscoveryState preexistingState = entry.getValue();
454 if (preexistingState != null && preexistingState != DeviceDiscoveryState.FAILED) {
455 return Optional.of(proposal);
456 }
457 }
458 }
459 }
460 return Optional.absent();
461 }
462
463 void finishConnection(final AbstractJingleConnection connection) {
464 this.connections.remove(connection.getId());
465 }
466
467 void finishConnectionOrThrow(final AbstractJingleConnection connection) {
468 final AbstractJingleConnection.Id id = connection.getId();
469 if (this.connections.remove(id) == null) {
470 throw new IllegalStateException(String.format("Unable to finish connection with id=%s", id.toString()));
471 }
472 }
473
474 public boolean fireJingleRtpConnectionStateUpdates() {
475 boolean firedUpdates = false;
476 for (final AbstractJingleConnection connection : this.connections.values()) {
477 if (connection instanceof JingleRtpConnection) {
478 final JingleRtpConnection jingleRtpConnection = (JingleRtpConnection) connection;
479 if (jingleRtpConnection.isTerminated()) {
480 continue;
481 }
482 jingleRtpConnection.fireStateUpdate();
483 firedUpdates = true;
484 }
485 }
486 return firedUpdates;
487 }
488
489 void getPrimaryCandidate(final Account account, final boolean initiator, final OnPrimaryCandidateFound listener) {
490 if (Config.DISABLE_PROXY_LOOKUP) {
491 listener.onPrimaryCandidateFound(false, null);
492 return;
493 }
494 if (!this.primaryCandidates.containsKey(account.getJid().asBareJid())) {
495 final Jid proxy = account.getXmppConnection().findDiscoItemByFeature(Namespace.BYTE_STREAMS);
496 if (proxy != null) {
497 IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
498 iq.setTo(proxy);
499 iq.query(Namespace.BYTE_STREAMS);
500 account.getXmppConnection().sendIqPacket(iq, new OnIqPacketReceived() {
501
502 @Override
503 public void onIqPacketReceived(Account account, IqPacket packet) {
504 final Element streamhost = packet.query().findChild("streamhost", Namespace.BYTE_STREAMS);
505 final String host = streamhost == null ? null : streamhost.getAttribute("host");
506 final String port = streamhost == null ? null : streamhost.getAttribute("port");
507 if (host != null && port != null) {
508 try {
509 JingleCandidate candidate = new JingleCandidate(nextRandomId(), true);
510 candidate.setHost(host);
511 candidate.setPort(Integer.parseInt(port));
512 candidate.setType(JingleCandidate.TYPE_PROXY);
513 candidate.setJid(proxy);
514 candidate.setPriority(655360 + (initiator ? 30 : 0));
515 primaryCandidates.put(account.getJid().asBareJid(), candidate);
516 listener.onPrimaryCandidateFound(true, candidate);
517 } catch (final NumberFormatException e) {
518 listener.onPrimaryCandidateFound(false, null);
519 }
520 } else {
521 listener.onPrimaryCandidateFound(false, null);
522 }
523 }
524 });
525 } else {
526 listener.onPrimaryCandidateFound(false, null);
527 }
528
529 } else {
530 listener.onPrimaryCandidateFound(true,
531 this.primaryCandidates.get(account.getJid().asBareJid()));
532 }
533 }
534
535 public void retractSessionProposal(final Account account, final Jid with) {
536 synchronized (this.rtpSessionProposals) {
537 RtpSessionProposal matchingProposal = null;
538 for (RtpSessionProposal proposal : this.rtpSessionProposals.keySet()) {
539 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
540 matchingProposal = proposal;
541 break;
542 }
543 }
544 if (matchingProposal != null) {
545 retractSessionProposal(matchingProposal);
546 }
547 }
548 }
549
550 private void retractSessionProposal(RtpSessionProposal rtpSessionProposal) {
551 final Account account = rtpSessionProposal.account;
552 toneManager.transition(RtpEndUserState.ENDED, rtpSessionProposal.media);
553 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": retracting rtp session proposal with " + rtpSessionProposal.with);
554 this.rtpSessionProposals.remove(rtpSessionProposal);
555 final MessagePacket messagePacket = mXmppConnectionService.getMessageGenerator().sessionRetract(rtpSessionProposal);
556 writeLogMissedOutgoing(account, rtpSessionProposal.with, rtpSessionProposal.sessionId, null, System.currentTimeMillis());
557 mXmppConnectionService.sendMessagePacket(account, messagePacket);
558 }
559
560 public String initializeRtpSession(final Account account, final Jid with, final Set<Media> media) {
561 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, with);
562 final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, account.getJid());
563 rtpConnection.setProposedMedia(media);
564 this.connections.put(id, rtpConnection);
565 rtpConnection.sendSessionInitiate();
566 return id.sessionId;
567 }
568
569 public void proposeJingleRtpSession(final Account account, final Jid with, final Set<Media> media) {
570 synchronized (this.rtpSessionProposals) {
571 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry : this.rtpSessionProposals.entrySet()) {
572 RtpSessionProposal proposal = entry.getKey();
573 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
574 final DeviceDiscoveryState preexistingState = entry.getValue();
575 if (preexistingState != null && preexistingState != DeviceDiscoveryState.FAILED) {
576 final RtpEndUserState endUserState = preexistingState.toEndUserState();
577 toneManager.transition(endUserState, media);
578 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
579 account,
580 with,
581 proposal.sessionId,
582 endUserState
583 );
584 return;
585 }
586 }
587 }
588 if (isBusy()) {
589 if (hasMatchingRtpSession(account, with, media)) {
590 Log.d(Config.LOGTAG, "ignoring request to propose jingle session because the other party already created one for us");
591 return;
592 }
593 throw new IllegalStateException("There is already a running RTP session. This should have been caught by the UI");
594 }
595 final RtpSessionProposal proposal = RtpSessionProposal.of(account, with.asBareJid(), media);
596 this.rtpSessionProposals.put(proposal, DeviceDiscoveryState.SEARCHING);
597 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
598 account,
599 proposal.with,
600 proposal.sessionId,
601 RtpEndUserState.FINDING_DEVICE
602 );
603 final MessagePacket messagePacket = mXmppConnectionService.getMessageGenerator().sessionProposal(proposal);
604 Log.d(Config.LOGTAG, messagePacket.toString());
605 mXmppConnectionService.sendMessagePacket(account, messagePacket);
606 }
607 }
608
609 public boolean hasMatchingProposal(final Account account, final Jid with) {
610 synchronized (this.rtpSessionProposals) {
611 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry : this.rtpSessionProposals.entrySet()) {
612 final RtpSessionProposal proposal = entry.getKey();
613 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
614 return true;
615 }
616 }
617 }
618 return false;
619 }
620
621 public void deliverIbbPacket(Account account, IqPacket packet) {
622 final String sid;
623 final Element payload;
624 if (packet.hasChild("open", Namespace.IBB)) {
625 payload = packet.findChild("open", Namespace.IBB);
626 sid = payload.getAttribute("sid");
627 } else if (packet.hasChild("data", Namespace.IBB)) {
628 payload = packet.findChild("data", Namespace.IBB);
629 sid = payload.getAttribute("sid");
630 } else if (packet.hasChild("close", Namespace.IBB)) {
631 payload = packet.findChild("close", Namespace.IBB);
632 sid = payload.getAttribute("sid");
633 } else {
634 payload = null;
635 sid = null;
636 }
637 if (sid != null) {
638 for (final AbstractJingleConnection connection : this.connections.values()) {
639 if (connection instanceof JingleFileTransferConnection) {
640 final JingleFileTransferConnection fileTransfer = (JingleFileTransferConnection) connection;
641 final JingleTransport transport = fileTransfer.getTransport();
642 if (transport instanceof JingleInBandTransport) {
643 final JingleInBandTransport inBandTransport = (JingleInBandTransport) transport;
644 if (inBandTransport.matches(account, sid)) {
645 inBandTransport.deliverPayload(packet, payload);
646 }
647 return;
648 }
649 }
650 }
651 }
652 Log.d(Config.LOGTAG, "unable to deliver ibb packet: " + packet.toString());
653 account.getXmppConnection().sendIqPacket(packet.generateResponse(IqPacket.TYPE.ERROR), null);
654 }
655
656 public void notifyRebound() {
657 for (final AbstractJingleConnection connection : this.connections.values()) {
658 connection.notifyRebound();
659 }
660 }
661
662 public WeakReference<JingleRtpConnection> findJingleRtpConnection(Account account, Jid with, String sessionId) {
663 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, with, sessionId);
664 final AbstractJingleConnection connection = connections.get(id);
665 if (connection instanceof JingleRtpConnection) {
666 return new WeakReference<>((JingleRtpConnection) connection);
667 }
668 return null;
669 }
670
671 public void updateProposedSessionDiscovered(Account account, Jid from, String sessionId, final DeviceDiscoveryState target) {
672 synchronized (this.rtpSessionProposals) {
673 final RtpSessionProposal sessionProposal = getRtpSessionProposal(account, from.asBareJid(), sessionId);
674 final DeviceDiscoveryState currentState = sessionProposal == null ? null : rtpSessionProposals.get(sessionProposal);
675 if (currentState == null) {
676 Log.d(Config.LOGTAG, "unable to find session proposal for session id " + sessionId);
677 return;
678 }
679 if (currentState == DeviceDiscoveryState.DISCOVERED) {
680 Log.d(Config.LOGTAG, "session proposal already at discovered. not going to fall back");
681 return;
682 }
683 this.rtpSessionProposals.put(sessionProposal, target);
684 final RtpEndUserState endUserState = target.toEndUserState();
685 toneManager.transition(endUserState, sessionProposal.media);
686 mXmppConnectionService.notifyJingleRtpConnectionUpdate(account, sessionProposal.with, sessionProposal.sessionId, endUserState);
687 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": flagging session " + sessionId + " as " + target);
688 }
689 }
690
691 public void rejectRtpSession(final String sessionId) {
692 for (final AbstractJingleConnection connection : this.connections.values()) {
693 if (connection.getId().sessionId.equals(sessionId)) {
694 if (connection instanceof JingleRtpConnection) {
695 ((JingleRtpConnection) connection).rejectCall();
696 }
697 }
698 }
699 }
700
701 public void endRtpSession(final String sessionId) {
702 for (final AbstractJingleConnection connection : this.connections.values()) {
703 if (connection.getId().sessionId.equals(sessionId)) {
704 if (connection instanceof JingleRtpConnection) {
705 ((JingleRtpConnection) connection).endCall();
706 }
707 }
708 }
709 }
710
711 public void failProceed(Account account, final Jid with, String sessionId) {
712 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, with, sessionId);
713 final AbstractJingleConnection existingJingleConnection = connections.get(id);
714 if (existingJingleConnection instanceof JingleRtpConnection) {
715 ((JingleRtpConnection) existingJingleConnection).deliverFailedProceed();
716 }
717 }
718
719 void ensureConnectionIsRegistered(final AbstractJingleConnection connection) {
720 if (connections.containsValue(connection)) {
721 return;
722 }
723 final IllegalStateException e = new IllegalStateException("JingleConnection has not been registered with connection manager");
724 Log.e(Config.LOGTAG, "ensureConnectionIsRegistered() failed. Going to throw", e);
725 throw e;
726 }
727
728 void setTerminalSessionState(AbstractJingleConnection.Id id, final RtpEndUserState state, final Set<Media> media) {
729 this.terminatedSessions.put(PersistableSessionId.of(id), new TerminatedRtpSession(state, media));
730 }
731
732 public TerminatedRtpSession getTerminalSessionState(final Jid with, final String sessionId) {
733 return this.terminatedSessions.getIfPresent(new PersistableSessionId(with, sessionId));
734 }
735
736 private static class PersistableSessionId {
737 private final Jid with;
738 private final String sessionId;
739
740 private PersistableSessionId(Jid with, String sessionId) {
741 this.with = with;
742 this.sessionId = sessionId;
743 }
744
745 public static PersistableSessionId of(AbstractJingleConnection.Id id) {
746 return new PersistableSessionId(id.with, id.sessionId);
747 }
748
749 @Override
750 public boolean equals(Object o) {
751 if (this == o) return true;
752 if (o == null || getClass() != o.getClass()) return false;
753 PersistableSessionId that = (PersistableSessionId) o;
754 return Objects.equal(with, that.with) &&
755 Objects.equal(sessionId, that.sessionId);
756 }
757
758 @Override
759 public int hashCode() {
760 return Objects.hashCode(with, sessionId);
761 }
762 }
763
764 public static class TerminatedRtpSession {
765 public final RtpEndUserState state;
766 public final Set<Media> media;
767
768 TerminatedRtpSession(RtpEndUserState state, Set<Media> media) {
769 this.state = state;
770 this.media = media;
771 }
772 }
773
774 public enum DeviceDiscoveryState {
775 SEARCHING, DISCOVERED, FAILED;
776
777 public RtpEndUserState toEndUserState() {
778 switch (this) {
779 case SEARCHING:
780 return RtpEndUserState.FINDING_DEVICE;
781 case DISCOVERED:
782 return RtpEndUserState.RINGING;
783 default:
784 return RtpEndUserState.CONNECTIVITY_ERROR;
785 }
786 }
787 }
788
789 public static class RtpSessionProposal implements OngoingRtpSession {
790 public final Jid with;
791 public final String sessionId;
792 public final Set<Media> media;
793 private final Account account;
794
795 private RtpSessionProposal(Account account, Jid with, String sessionId) {
796 this(account, with, sessionId, Collections.emptySet());
797 }
798
799 private RtpSessionProposal(Account account, Jid with, String sessionId, Set<Media> media) {
800 this.account = account;
801 this.with = with;
802 this.sessionId = sessionId;
803 this.media = media;
804 }
805
806 public static RtpSessionProposal of(Account account, Jid with, Set<Media> media) {
807 return new RtpSessionProposal(account, with, nextRandomId(), media);
808 }
809
810 @Override
811 public boolean equals(Object o) {
812 if (this == o) return true;
813 if (o == null || getClass() != o.getClass()) return false;
814 RtpSessionProposal proposal = (RtpSessionProposal) o;
815 return Objects.equal(account.getJid(), proposal.account.getJid()) &&
816 Objects.equal(with, proposal.with) &&
817 Objects.equal(sessionId, proposal.sessionId);
818 }
819
820 @Override
821 public int hashCode() {
822 return Objects.hashCode(account.getJid(), with, sessionId);
823 }
824
825 @Override
826 public Account getAccount() {
827 return account;
828 }
829
830 @Override
831 public Jid getWith() {
832 return with;
833 }
834
835 @Override
836 public String getSessionId() {
837 return sessionId;
838 }
839 }
840}