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