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)
137 || this.rtpSessionProposals.containsValue(DeviceDiscoveryState.SEARCHING)
138 || this.rtpSessionProposals.containsValue(DeviceDiscoveryState.SEARCHING_ACKNOWLEDGED);
139 }
140 }
141
142 public void notifyPhoneCallStarted() {
143 for (AbstractJingleConnection connection : connections.values()) {
144 if (connection instanceof JingleRtpConnection) {
145 final JingleRtpConnection rtpConnection = (JingleRtpConnection) connection;
146 if (rtpConnection.isTerminated()) {
147 continue;
148 }
149 rtpConnection.notifyPhoneCall();
150 }
151 }
152 }
153
154 private Optional<RtpSessionProposal> findMatchingSessionProposal(final Account account, final Jid with, final Set<Media> media) {
155 synchronized (this.rtpSessionProposals) {
156 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry : this.rtpSessionProposals.entrySet()) {
157 final RtpSessionProposal proposal = entry.getKey();
158 final DeviceDiscoveryState state = entry.getValue();
159 final boolean openProposal = state == DeviceDiscoveryState.DISCOVERED
160 || state == DeviceDiscoveryState.SEARCHING
161 || state == DeviceDiscoveryState.SEARCHING_ACKNOWLEDGED;
162 if (openProposal
163 && proposal.account == account
164 && proposal.with.equals(with.asBareJid())
165 && proposal.media.equals(media)) {
166 return Optional.of(proposal);
167 }
168 }
169 }
170 return Optional.absent();
171 }
172
173 private boolean hasMatchingRtpSession(final Account account, final Jid with, final Set<Media> media) {
174 for (AbstractJingleConnection connection : this.connections.values()) {
175 if (connection instanceof JingleRtpConnection) {
176 final JingleRtpConnection rtpConnection = (JingleRtpConnection) connection;
177 if (rtpConnection.isTerminated()) {
178 continue;
179 }
180 if (rtpConnection.getId().account == account
181 && rtpConnection.getId().with.asBareJid().equals(with.asBareJid())
182 && rtpConnection.getMedia().equals(media)) {
183 return true;
184 }
185 }
186 }
187 return false;
188 }
189
190 private boolean isWithStrangerAndStrangerNotificationsAreOff(final Account account, Jid with) {
191 final boolean notifyForStrangers = mXmppConnectionService.getNotificationService().notificationsFromStrangers();
192 if (notifyForStrangers) {
193 return false;
194 }
195 final Contact contact = account.getRoster().getContact(with);
196 return !contact.showInContactList();
197 }
198
199 ScheduledFuture<?> schedule(final Runnable runnable, final long delay, final TimeUnit timeUnit) {
200 return SCHEDULED_EXECUTOR_SERVICE.schedule(runnable, delay, timeUnit);
201 }
202
203 void respondWithJingleError(final Account account, final IqPacket original, String jingleCondition, String condition, String conditionType) {
204 final IqPacket response = original.generateResponse(IqPacket.TYPE.ERROR);
205 final Element error = response.addChild("error");
206 error.setAttribute("type", conditionType);
207 error.addChild(condition, "urn:ietf:params:xml:ns:xmpp-stanzas");
208 error.addChild(jingleCondition, "urn:xmpp:jingle:errors:1");
209 account.getXmppConnection().sendIqPacket(response, null);
210 }
211
212 public void deliverMessage(final Account account, final Jid to, final Jid from, final Element message, String remoteMsgId, String serverMsgId, long timestamp) {
213 Preconditions.checkArgument(Namespace.JINGLE_MESSAGE.equals(message.getNamespace()));
214 final String sessionId = message.getAttribute("id");
215 if (sessionId == null) {
216 return;
217 }
218 if ("accept".equals(message.getName())) {
219 for (AbstractJingleConnection connection : connections.values()) {
220 if (connection instanceof JingleRtpConnection) {
221 final JingleRtpConnection rtpConnection = (JingleRtpConnection) connection;
222 final AbstractJingleConnection.Id id = connection.getId();
223 if (id.account == account && id.sessionId.equals(sessionId)) {
224 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
225 return;
226 }
227 }
228 }
229 return;
230 }
231 final boolean fromSelf = from.asBareJid().equals(account.getJid().asBareJid());
232 final boolean addressedDirectly = to != null && to.equals(account.getJid());
233 final AbstractJingleConnection.Id id;
234 if (fromSelf) {
235 if (to != null && to.isFullJid()) {
236 id = AbstractJingleConnection.Id.of(account, to, sessionId);
237 } else {
238 return;
239 }
240 } else {
241 id = AbstractJingleConnection.Id.of(account, from, sessionId);
242 }
243 final AbstractJingleConnection existingJingleConnection = connections.get(id);
244 if (existingJingleConnection != null) {
245 if (existingJingleConnection instanceof JingleRtpConnection) {
246 ((JingleRtpConnection) existingJingleConnection).deliveryMessage(from, message, serverMsgId, timestamp);
247 } else {
248 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": " + existingJingleConnection.getClass().getName() + " does not support jingle messages");
249 }
250 return;
251 }
252
253 if (fromSelf) {
254 if ("proceed".equals(message.getName())) {
255 final Conversation c = mXmppConnectionService.findOrCreateConversation(account, id.with, false, false);
256 final Message previousBusy = c.findRtpSession(sessionId, Message.STATUS_RECEIVED);
257 if (previousBusy != null) {
258 previousBusy.setBody(new RtpSessionStatus(true, 0).toString());
259 if (serverMsgId != null) {
260 previousBusy.setServerMsgId(serverMsgId);
261 }
262 previousBusy.setTime(timestamp);
263 mXmppConnectionService.updateMessage(previousBusy, true);
264 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": updated previous busy because call got picked up by another device");
265 return;
266 }
267 }
268 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignore jingle message from self");
269 return;
270 }
271
272 if ("propose".equals(message.getName())) {
273 final Propose propose = Propose.upgrade(message);
274 final List<GenericDescription> descriptions = propose.getDescriptions();
275 final Collection<RtpDescription> rtpDescriptions = Collections2.transform(
276 Collections2.filter(descriptions, d -> d instanceof RtpDescription),
277 input -> (RtpDescription) input
278 );
279 if (rtpDescriptions.size() > 0 && rtpDescriptions.size() == descriptions.size() && isUsingClearNet(account)) {
280 final Collection<Media> media = Collections2.transform(rtpDescriptions, RtpDescription::getMedia);
281 if (media.contains(Media.UNKNOWN)) {
282 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": encountered unknown media in session proposal. " + propose);
283 return;
284 }
285 final Optional<RtpSessionProposal> matchingSessionProposal = findMatchingSessionProposal(account, id.with, ImmutableSet.copyOf(media));
286 if (matchingSessionProposal.isPresent()) {
287 final String ourSessionId = matchingSessionProposal.get().sessionId;
288 final String theirSessionId = id.sessionId;
289 if (ComparisonChain.start()
290 .compare(ourSessionId, theirSessionId)
291 .compare(account.getJid().toEscapedString(), id.with.toEscapedString())
292 .result() > 0) {
293 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": our session lost tie break. automatically accepting their session. winning Session=" + theirSessionId);
294 //TODO a retract for this reason should probably include some indication of tie break
295 retractSessionProposal(matchingSessionProposal.get());
296 final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, from);
297 this.connections.put(id, rtpConnection);
298 rtpConnection.setProposedMedia(ImmutableSet.copyOf(media));
299 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
300 } else {
301 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": our session won tie break. waiting for other party to accept. winningSession=" + ourSessionId);
302 }
303 return;
304 }
305 final boolean stranger = isWithStrangerAndStrangerNotificationsAreOff(account, id.with);
306 if (isBusy() || stranger) {
307 writeLogMissedIncoming(account, id.with.asBareJid(), id.sessionId, serverMsgId, timestamp);
308 if (stranger) {
309 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring call proposal from stranger " + id.with);
310 return;
311 }
312 final int activeDevices = account.activeDevicesWithRtpCapability();
313 Log.d(Config.LOGTAG, "active devices with rtp capability: " + activeDevices);
314 if (activeDevices == 0) {
315 final MessagePacket reject = mXmppConnectionService.getMessageGenerator().sessionReject(from, sessionId);
316 mXmppConnectionService.sendMessagePacket(account, reject);
317 } else {
318 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring proposal because busy on this device but there are other devices");
319 }
320 } else {
321 final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, from);
322 this.connections.put(id, rtpConnection);
323 rtpConnection.setProposedMedia(ImmutableSet.copyOf(media));
324 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
325 }
326 } else {
327 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to react to proposed session with " + rtpDescriptions.size() + " rtp descriptions of " + descriptions.size() + " total descriptions");
328 }
329 } else if (addressedDirectly && "proceed".equals(message.getName())) {
330 synchronized (rtpSessionProposals) {
331 final RtpSessionProposal proposal = getRtpSessionProposal(account, from.asBareJid(), sessionId);
332 if (proposal != null) {
333 rtpSessionProposals.remove(proposal);
334 final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, account.getJid());
335 rtpConnection.setProposedMedia(proposal.media);
336 this.connections.put(id, rtpConnection);
337 rtpConnection.transitionOrThrow(AbstractJingleConnection.State.PROPOSED);
338 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
339 } else {
340 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": no rtp session proposal found for " + from + " to deliver proceed");
341 if (remoteMsgId == null) {
342 return;
343 }
344 final MessagePacket errorMessage = new MessagePacket();
345 errorMessage.setTo(from);
346 errorMessage.setId(remoteMsgId);
347 errorMessage.setType(MessagePacket.TYPE_ERROR);
348 final Element error = errorMessage.addChild("error");
349 error.setAttribute("code", "404");
350 error.setAttribute("type", "cancel");
351 error.addChild("item-not-found", "urn:ietf:params:xml:ns:xmpp-stanzas");
352 mXmppConnectionService.sendMessagePacket(account, errorMessage);
353 }
354 }
355 } else if (addressedDirectly && "reject".equals(message.getName())) {
356 final RtpSessionProposal proposal = getRtpSessionProposal(account, from.asBareJid(), sessionId);
357 synchronized (rtpSessionProposals) {
358 if (proposal != null && rtpSessionProposals.remove(proposal) != null) {
359 writeLogMissedOutgoing(account, proposal.with, proposal.sessionId, serverMsgId, timestamp);
360 toneManager.transition(RtpEndUserState.DECLINED_OR_BUSY, proposal.media);
361 mXmppConnectionService.notifyJingleRtpConnectionUpdate(account, proposal.with, proposal.sessionId, RtpEndUserState.DECLINED_OR_BUSY);
362 } else {
363 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": no rtp session proposal found for " + from + " to deliver reject");
364 }
365 }
366 } else {
367 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": retrieved out of order jingle message" + message);
368 }
369
370 }
371
372 private RtpSessionProposal getRtpSessionProposal(final Account account, Jid from, String sessionId) {
373 for (RtpSessionProposal rtpSessionProposal : rtpSessionProposals.keySet()) {
374 if (rtpSessionProposal.sessionId.equals(sessionId) && rtpSessionProposal.with.equals(from) && rtpSessionProposal.account.getJid().equals(account.getJid())) {
375 return rtpSessionProposal;
376 }
377 }
378 return null;
379 }
380
381 private void writeLogMissedOutgoing(final Account account, Jid with, final String sessionId, String serverMsgId, long timestamp) {
382 final Conversation conversation = mXmppConnectionService.findOrCreateConversation(
383 account,
384 with.asBareJid(),
385 false,
386 false
387 );
388 final Message message = new Message(
389 conversation,
390 Message.STATUS_SEND,
391 Message.TYPE_RTP_SESSION,
392 sessionId
393 );
394 message.setBody(new RtpSessionStatus(false, 0).toString());
395 message.setServerMsgId(serverMsgId);
396 message.setTime(timestamp);
397 writeMessage(message);
398 }
399
400 private void writeLogMissedIncoming(final Account account, Jid with, final String sessionId, String serverMsgId, long timestamp) {
401 final Conversation conversation = mXmppConnectionService.findOrCreateConversation(
402 account,
403 with.asBareJid(),
404 false,
405 false
406 );
407 final Message message = new Message(
408 conversation,
409 Message.STATUS_RECEIVED,
410 Message.TYPE_RTP_SESSION,
411 sessionId
412 );
413 message.setBody(new RtpSessionStatus(false, 0).toString());
414 message.setServerMsgId(serverMsgId);
415 message.setTime(timestamp);
416 writeMessage(message);
417 }
418
419 private void writeMessage(final Message message) {
420 final Conversational conversational = message.getConversation();
421 if (conversational instanceof Conversation) {
422 ((Conversation) conversational).add(message);
423 mXmppConnectionService.databaseBackend.createMessage(message);
424 mXmppConnectionService.updateConversationUi();
425 } else {
426 throw new IllegalStateException("Somehow the conversation in a message was a stub");
427 }
428 }
429
430 public void startJingleFileTransfer(final Message message) {
431 Preconditions.checkArgument(message.isFileOrImage(), "Message is not of type file or image");
432 final Transferable old = message.getTransferable();
433 if (old != null) {
434 old.cancel();
435 }
436 final Account account = message.getConversation().getAccount();
437 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(message);
438 final JingleFileTransferConnection connection = new JingleFileTransferConnection(this, id, account.getJid());
439 mXmppConnectionService.markMessage(message, Message.STATUS_WAITING);
440 this.connections.put(id, connection);
441 connection.init(message);
442 }
443
444 public Optional<OngoingRtpSession> getOngoingRtpConnection(final Contact contact) {
445 for (final Map.Entry<AbstractJingleConnection.Id, AbstractJingleConnection> entry : this.connections.entrySet()) {
446 if (entry.getValue() instanceof JingleRtpConnection) {
447 final AbstractJingleConnection.Id id = entry.getKey();
448 if (id.account == contact.getAccount() && id.with.asBareJid().equals(contact.getJid().asBareJid())) {
449 return Optional.of(id);
450 }
451 }
452 }
453 synchronized (this.rtpSessionProposals) {
454 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry : this.rtpSessionProposals.entrySet()) {
455 RtpSessionProposal proposal = entry.getKey();
456 if (proposal.account == contact.getAccount() && contact.getJid().asBareJid().equals(proposal.with)) {
457 final DeviceDiscoveryState preexistingState = entry.getValue();
458 if (preexistingState != null && preexistingState != DeviceDiscoveryState.FAILED) {
459 return Optional.of(proposal);
460 }
461 }
462 }
463 }
464 return Optional.absent();
465 }
466
467 void finishConnection(final AbstractJingleConnection connection) {
468 this.connections.remove(connection.getId());
469 }
470
471 void finishConnectionOrThrow(final AbstractJingleConnection connection) {
472 final AbstractJingleConnection.Id id = connection.getId();
473 if (this.connections.remove(id) == null) {
474 throw new IllegalStateException(String.format("Unable to finish connection with id=%s", id.toString()));
475 }
476 }
477
478 public boolean fireJingleRtpConnectionStateUpdates() {
479 boolean firedUpdates = false;
480 for (final AbstractJingleConnection connection : this.connections.values()) {
481 if (connection instanceof JingleRtpConnection) {
482 final JingleRtpConnection jingleRtpConnection = (JingleRtpConnection) connection;
483 if (jingleRtpConnection.isTerminated()) {
484 continue;
485 }
486 jingleRtpConnection.fireStateUpdate();
487 firedUpdates = true;
488 }
489 }
490 return firedUpdates;
491 }
492
493 void getPrimaryCandidate(final Account account, final boolean initiator, final OnPrimaryCandidateFound listener) {
494 if (Config.DISABLE_PROXY_LOOKUP) {
495 listener.onPrimaryCandidateFound(false, null);
496 return;
497 }
498 if (!this.primaryCandidates.containsKey(account.getJid().asBareJid())) {
499 final Jid proxy = account.getXmppConnection().findDiscoItemByFeature(Namespace.BYTE_STREAMS);
500 if (proxy != null) {
501 IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
502 iq.setTo(proxy);
503 iq.query(Namespace.BYTE_STREAMS);
504 account.getXmppConnection().sendIqPacket(iq, new OnIqPacketReceived() {
505
506 @Override
507 public void onIqPacketReceived(Account account, IqPacket packet) {
508 final Element streamhost = packet.query().findChild("streamhost", Namespace.BYTE_STREAMS);
509 final String host = streamhost == null ? null : streamhost.getAttribute("host");
510 final String port = streamhost == null ? null : streamhost.getAttribute("port");
511 if (host != null && port != null) {
512 try {
513 JingleCandidate candidate = new JingleCandidate(nextRandomId(), true);
514 candidate.setHost(host);
515 candidate.setPort(Integer.parseInt(port));
516 candidate.setType(JingleCandidate.TYPE_PROXY);
517 candidate.setJid(proxy);
518 candidate.setPriority(655360 + (initiator ? 30 : 0));
519 primaryCandidates.put(account.getJid().asBareJid(), candidate);
520 listener.onPrimaryCandidateFound(true, candidate);
521 } catch (final NumberFormatException e) {
522 listener.onPrimaryCandidateFound(false, null);
523 }
524 } else {
525 listener.onPrimaryCandidateFound(false, null);
526 }
527 }
528 });
529 } else {
530 listener.onPrimaryCandidateFound(false, null);
531 }
532
533 } else {
534 listener.onPrimaryCandidateFound(true,
535 this.primaryCandidates.get(account.getJid().asBareJid()));
536 }
537 }
538
539 public void retractSessionProposal(final Account account, final Jid with) {
540 synchronized (this.rtpSessionProposals) {
541 RtpSessionProposal matchingProposal = null;
542 for (RtpSessionProposal proposal : this.rtpSessionProposals.keySet()) {
543 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
544 matchingProposal = proposal;
545 break;
546 }
547 }
548 if (matchingProposal != null) {
549 retractSessionProposal(matchingProposal);
550 }
551 }
552 }
553
554 private void retractSessionProposal(RtpSessionProposal rtpSessionProposal) {
555 final Account account = rtpSessionProposal.account;
556 toneManager.transition(RtpEndUserState.ENDED, rtpSessionProposal.media);
557 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": retracting rtp session proposal with " + rtpSessionProposal.with);
558 this.rtpSessionProposals.remove(rtpSessionProposal);
559 final MessagePacket messagePacket = mXmppConnectionService.getMessageGenerator().sessionRetract(rtpSessionProposal);
560 writeLogMissedOutgoing(account, rtpSessionProposal.with, rtpSessionProposal.sessionId, null, System.currentTimeMillis());
561 mXmppConnectionService.sendMessagePacket(account, messagePacket);
562 }
563
564 public String initializeRtpSession(final Account account, final Jid with, final Set<Media> media) {
565 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, with);
566 final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, account.getJid());
567 rtpConnection.setProposedMedia(media);
568 this.connections.put(id, rtpConnection);
569 rtpConnection.sendSessionInitiate();
570 return id.sessionId;
571 }
572
573 public void proposeJingleRtpSession(final Account account, final Jid with, final Set<Media> media) {
574 synchronized (this.rtpSessionProposals) {
575 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry : this.rtpSessionProposals.entrySet()) {
576 RtpSessionProposal proposal = entry.getKey();
577 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
578 final DeviceDiscoveryState preexistingState = entry.getValue();
579 if (preexistingState != null && preexistingState != DeviceDiscoveryState.FAILED) {
580 final RtpEndUserState endUserState = preexistingState.toEndUserState();
581 toneManager.transition(endUserState, media);
582 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
583 account,
584 with,
585 proposal.sessionId,
586 endUserState
587 );
588 return;
589 }
590 }
591 }
592 if (isBusy()) {
593 if (hasMatchingRtpSession(account, with, media)) {
594 Log.d(Config.LOGTAG, "ignoring request to propose jingle session because the other party already created one for us");
595 return;
596 }
597 throw new IllegalStateException("There is already a running RTP session. This should have been caught by the UI");
598 }
599 final RtpSessionProposal proposal = RtpSessionProposal.of(account, with.asBareJid(), media);
600 this.rtpSessionProposals.put(proposal, DeviceDiscoveryState.SEARCHING);
601 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
602 account,
603 proposal.with,
604 proposal.sessionId,
605 RtpEndUserState.FINDING_DEVICE
606 );
607 final MessagePacket messagePacket = mXmppConnectionService.getMessageGenerator().sessionProposal(proposal);
608 mXmppConnectionService.sendMessagePacket(account, messagePacket);
609 }
610 }
611
612 public boolean hasMatchingProposal(final Account account, final Jid with) {
613 synchronized (this.rtpSessionProposals) {
614 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry : this.rtpSessionProposals.entrySet()) {
615 final RtpSessionProposal proposal = entry.getKey();
616 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
617 return true;
618 }
619 }
620 }
621 return false;
622 }
623
624 public void deliverIbbPacket(Account account, IqPacket packet) {
625 final String sid;
626 final Element payload;
627 if (packet.hasChild("open", Namespace.IBB)) {
628 payload = packet.findChild("open", Namespace.IBB);
629 sid = payload.getAttribute("sid");
630 } else if (packet.hasChild("data", Namespace.IBB)) {
631 payload = packet.findChild("data", Namespace.IBB);
632 sid = payload.getAttribute("sid");
633 } else if (packet.hasChild("close", Namespace.IBB)) {
634 payload = packet.findChild("close", Namespace.IBB);
635 sid = payload.getAttribute("sid");
636 } else {
637 payload = null;
638 sid = null;
639 }
640 if (sid != null) {
641 for (final AbstractJingleConnection connection : this.connections.values()) {
642 if (connection instanceof JingleFileTransferConnection) {
643 final JingleFileTransferConnection fileTransfer = (JingleFileTransferConnection) connection;
644 final JingleTransport transport = fileTransfer.getTransport();
645 if (transport instanceof JingleInBandTransport) {
646 final JingleInBandTransport inBandTransport = (JingleInBandTransport) transport;
647 if (inBandTransport.matches(account, sid)) {
648 inBandTransport.deliverPayload(packet, payload);
649 }
650 return;
651 }
652 }
653 }
654 }
655 Log.d(Config.LOGTAG, "unable to deliver ibb packet: " + packet.toString());
656 account.getXmppConnection().sendIqPacket(packet.generateResponse(IqPacket.TYPE.ERROR), null);
657 }
658
659 public void notifyRebound(final Account account) {
660 for (final AbstractJingleConnection connection : this.connections.values()) {
661 connection.notifyRebound();
662 }
663 resendSessionProposals(account);
664 }
665
666 public WeakReference<JingleRtpConnection> findJingleRtpConnection(Account account, Jid with, String sessionId) {
667 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, with, sessionId);
668 final AbstractJingleConnection connection = connections.get(id);
669 if (connection instanceof JingleRtpConnection) {
670 return new WeakReference<>((JingleRtpConnection) connection);
671 }
672 return null;
673 }
674
675 private void resendSessionProposals(final Account account) {
676 synchronized (this.rtpSessionProposals) {
677 for (final Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry : this.rtpSessionProposals.entrySet()) {
678 final RtpSessionProposal proposal = entry.getKey();
679 if (entry.getValue() == DeviceDiscoveryState.SEARCHING && proposal.account == account) {
680 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resending session proposal to " + proposal.with);
681 final MessagePacket messagePacket = mXmppConnectionService.getMessageGenerator().sessionProposal(proposal);
682 mXmppConnectionService.sendMessagePacket(account, messagePacket);
683 }
684 }
685 }
686 }
687
688 public void updateProposedSessionDiscovered(Account account, Jid from, String sessionId, final DeviceDiscoveryState target) {
689 synchronized (this.rtpSessionProposals) {
690 final RtpSessionProposal sessionProposal = getRtpSessionProposal(account, from.asBareJid(), sessionId);
691 final DeviceDiscoveryState currentState = sessionProposal == null ? null : rtpSessionProposals.get(sessionProposal);
692 if (currentState == null) {
693 Log.d(Config.LOGTAG, "unable to find session proposal for session id " + sessionId);
694 return;
695 }
696 if (currentState == DeviceDiscoveryState.DISCOVERED) {
697 Log.d(Config.LOGTAG, "session proposal already at discovered. not going to fall back");
698 return;
699 }
700 this.rtpSessionProposals.put(sessionProposal, target);
701 final RtpEndUserState endUserState = target.toEndUserState();
702 toneManager.transition(endUserState, sessionProposal.media);
703 mXmppConnectionService.notifyJingleRtpConnectionUpdate(account, sessionProposal.with, sessionProposal.sessionId, endUserState);
704 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": flagging session " + sessionId + " as " + target);
705 }
706 }
707
708 public void rejectRtpSession(final String sessionId) {
709 for (final AbstractJingleConnection connection : this.connections.values()) {
710 if (connection.getId().sessionId.equals(sessionId)) {
711 if (connection instanceof JingleRtpConnection) {
712 ((JingleRtpConnection) connection).rejectCall();
713 }
714 }
715 }
716 }
717
718 public void endRtpSession(final String sessionId) {
719 for (final AbstractJingleConnection connection : this.connections.values()) {
720 if (connection.getId().sessionId.equals(sessionId)) {
721 if (connection instanceof JingleRtpConnection) {
722 ((JingleRtpConnection) connection).endCall();
723 }
724 }
725 }
726 }
727
728 public void failProceed(Account account, final Jid with, String sessionId) {
729 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, with, sessionId);
730 final AbstractJingleConnection existingJingleConnection = connections.get(id);
731 if (existingJingleConnection instanceof JingleRtpConnection) {
732 ((JingleRtpConnection) existingJingleConnection).deliverFailedProceed();
733 }
734 }
735
736 void ensureConnectionIsRegistered(final AbstractJingleConnection connection) {
737 if (connections.containsValue(connection)) {
738 return;
739 }
740 final IllegalStateException e = new IllegalStateException("JingleConnection has not been registered with connection manager");
741 Log.e(Config.LOGTAG, "ensureConnectionIsRegistered() failed. Going to throw", e);
742 throw e;
743 }
744
745 void setTerminalSessionState(AbstractJingleConnection.Id id, final RtpEndUserState state, final Set<Media> media) {
746 this.terminatedSessions.put(PersistableSessionId.of(id), new TerminatedRtpSession(state, media));
747 }
748
749 public TerminatedRtpSession getTerminalSessionState(final Jid with, final String sessionId) {
750 return this.terminatedSessions.getIfPresent(new PersistableSessionId(with, sessionId));
751 }
752
753 private static class PersistableSessionId {
754 private final Jid with;
755 private final String sessionId;
756
757 private PersistableSessionId(Jid with, String sessionId) {
758 this.with = with;
759 this.sessionId = sessionId;
760 }
761
762 public static PersistableSessionId of(AbstractJingleConnection.Id id) {
763 return new PersistableSessionId(id.with, id.sessionId);
764 }
765
766 @Override
767 public boolean equals(Object o) {
768 if (this == o) return true;
769 if (o == null || getClass() != o.getClass()) return false;
770 PersistableSessionId that = (PersistableSessionId) o;
771 return Objects.equal(with, that.with) &&
772 Objects.equal(sessionId, that.sessionId);
773 }
774
775 @Override
776 public int hashCode() {
777 return Objects.hashCode(with, sessionId);
778 }
779 }
780
781 public static class TerminatedRtpSession {
782 public final RtpEndUserState state;
783 public final Set<Media> media;
784
785 TerminatedRtpSession(RtpEndUserState state, Set<Media> media) {
786 this.state = state;
787 this.media = media;
788 }
789 }
790
791 public enum DeviceDiscoveryState {
792 SEARCHING, SEARCHING_ACKNOWLEDGED, DISCOVERED, FAILED;
793
794 public RtpEndUserState toEndUserState() {
795 switch (this) {
796 case SEARCHING:
797 case SEARCHING_ACKNOWLEDGED:
798 return RtpEndUserState.FINDING_DEVICE;
799 case DISCOVERED:
800 return RtpEndUserState.RINGING;
801 default:
802 return RtpEndUserState.CONNECTIVITY_ERROR;
803 }
804 }
805 }
806
807 public static class RtpSessionProposal implements OngoingRtpSession {
808 public final Jid with;
809 public final String sessionId;
810 public final Set<Media> media;
811 private final Account account;
812
813 private RtpSessionProposal(Account account, Jid with, String sessionId) {
814 this(account, with, sessionId, Collections.emptySet());
815 }
816
817 private RtpSessionProposal(Account account, Jid with, String sessionId, Set<Media> media) {
818 this.account = account;
819 this.with = with;
820 this.sessionId = sessionId;
821 this.media = media;
822 }
823
824 public static RtpSessionProposal of(Account account, Jid with, Set<Media> media) {
825 return new RtpSessionProposal(account, with, nextRandomId(), media);
826 }
827
828 @Override
829 public boolean equals(Object o) {
830 if (this == o) return true;
831 if (o == null || getClass() != o.getClass()) return false;
832 RtpSessionProposal proposal = (RtpSessionProposal) o;
833 return Objects.equal(account.getJid(), proposal.account.getJid()) &&
834 Objects.equal(with, proposal.with) &&
835 Objects.equal(sessionId, proposal.sessionId);
836 }
837
838 @Override
839 public int hashCode() {
840 return Objects.hashCode(account.getJid(), with, sessionId);
841 }
842
843 @Override
844 public Account getAccount() {
845 return account;
846 }
847
848 @Override
849 public Jid getWith() {
850 return with;
851 }
852
853 @Override
854 public String getSessionId() {
855 return sessionId;
856 }
857 }
858}