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;
14import com.google.j2objc.annotations.Weak;
15
16import java.lang.ref.WeakReference;
17import java.security.SecureRandom;
18import java.util.Collection;
19import java.util.Collections;
20import java.util.HashMap;
21import java.util.List;
22import java.util.Map;
23import java.util.Set;
24import java.util.concurrent.ConcurrentHashMap;
25import java.util.concurrent.Executors;
26import java.util.concurrent.ScheduledExecutorService;
27import java.util.concurrent.ScheduledFuture;
28import java.util.concurrent.TimeUnit;
29
30import eu.siacs.conversations.Config;
31import eu.siacs.conversations.entities.Account;
32import eu.siacs.conversations.entities.Contact;
33import eu.siacs.conversations.entities.Conversation;
34import eu.siacs.conversations.entities.Conversational;
35import eu.siacs.conversations.entities.Message;
36import eu.siacs.conversations.entities.RtpSessionStatus;
37import eu.siacs.conversations.entities.Transferable;
38import eu.siacs.conversations.services.AbstractConnectionManager;
39import eu.siacs.conversations.services.XmppConnectionService;
40import eu.siacs.conversations.xml.Element;
41import eu.siacs.conversations.xml.Namespace;
42import eu.siacs.conversations.xmpp.Jid;
43import eu.siacs.conversations.xmpp.OnIqPacketReceived;
44import eu.siacs.conversations.xmpp.jingle.stanzas.Content;
45import eu.siacs.conversations.xmpp.jingle.stanzas.FileTransferDescription;
46import eu.siacs.conversations.xmpp.jingle.stanzas.GenericDescription;
47import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
48import eu.siacs.conversations.xmpp.jingle.stanzas.Propose;
49import eu.siacs.conversations.xmpp.jingle.stanzas.Reason;
50import eu.siacs.conversations.xmpp.jingle.stanzas.RtpDescription;
51import eu.siacs.conversations.xmpp.stanzas.IqPacket;
52import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
53
54public class JingleConnectionManager extends AbstractConnectionManager {
55 static final ScheduledExecutorService SCHEDULED_EXECUTOR_SERVICE = Executors.newSingleThreadScheduledExecutor();
56 final ToneManager toneManager;
57 private final HashMap<RtpSessionProposal, DeviceDiscoveryState> rtpSessionProposals = new HashMap<>();
58 private final ConcurrentHashMap<AbstractJingleConnection.Id, AbstractJingleConnection> connections = new ConcurrentHashMap<>();
59
60 private final Cache<PersistableSessionId, JingleRtpConnection.State> endedSessions = CacheBuilder.newBuilder()
61 .expireAfterWrite(30, TimeUnit.MINUTES)
62 .build();
63
64 private HashMap<Jid, JingleCandidate> primaryCandidates = new HashMap<>();
65
66 public JingleConnectionManager(XmppConnectionService service) {
67 super(service);
68 this.toneManager = new ToneManager(service);
69 }
70
71 static String nextRandomId() {
72 final byte[] id = new byte[16];
73 new SecureRandom().nextBytes(id);
74 return Base64.encodeToString(id, Base64.NO_WRAP | Base64.NO_PADDING);
75 }
76
77 public void deliverPacket(final Account account, final JinglePacket packet) {
78 final String sessionId = packet.getSessionId();
79 if (sessionId == null) {
80 respondWithJingleError(account, packet, "unknown-session", "item-not-found", "cancel");
81 return;
82 }
83 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, packet);
84 final AbstractJingleConnection existingJingleConnection = connections.get(id);
85 if (existingJingleConnection != null) {
86 existingJingleConnection.deliverPacket(packet);
87 } else if (packet.getAction() == JinglePacket.Action.SESSION_INITIATE) {
88 final Jid from = packet.getFrom();
89 final Content content = packet.getJingleContent();
90 final String descriptionNamespace = content == null ? null : content.getDescriptionNamespace();
91 final AbstractJingleConnection connection;
92 if (FileTransferDescription.NAMESPACES.contains(descriptionNamespace)) {
93 connection = new JingleFileTransferConnection(this, id, from);
94 } else if (Namespace.JINGLE_APPS_RTP.equals(descriptionNamespace) && !usesTor(account)) {
95 final boolean sessionEnded = this.endedSessions.asMap().containsKey(PersistableSessionId.of(id));
96 final boolean stranger = isWithStrangerAndStrangerNotificationsAreOff(account, id.with);
97 if (isBusy() || sessionEnded || stranger) {
98 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": rejected session with " + id.with + " because busy. sessionEnded=" + sessionEnded + ", stranger=" + stranger);
99 mXmppConnectionService.sendIqPacket(account, packet.generateResponse(IqPacket.TYPE.RESULT), null);
100 final JinglePacket sessionTermination = new JinglePacket(JinglePacket.Action.SESSION_TERMINATE, id.sessionId);
101 sessionTermination.setTo(id.with);
102 sessionTermination.setReason(Reason.BUSY, null);
103 mXmppConnectionService.sendIqPacket(account, sessionTermination, null);
104 return;
105 }
106 connection = new JingleRtpConnection(this, id, from);
107 } else {
108 respondWithJingleError(account, packet, "unsupported-info", "feature-not-implemented", "cancel");
109 return;
110 }
111 connections.put(id, connection);
112 mXmppConnectionService.updateConversationUi();
113 connection.deliverPacket(packet);
114 } else {
115 Log.d(Config.LOGTAG, "unable to route jingle packet: " + packet);
116 respondWithJingleError(account, packet, "unknown-session", "item-not-found", "cancel");
117 }
118 }
119
120 private boolean usesTor(final Account account) {
121 return account.isOnion() || mXmppConnectionService.useTorToConnect();
122 }
123
124 public boolean isBusy() {
125 for (AbstractJingleConnection connection : this.connections.values()) {
126 if (connection instanceof JingleRtpConnection) {
127 if (((JingleRtpConnection) connection).isTerminated()) {
128 continue;
129 }
130 return true;
131 }
132 }
133 synchronized (this.rtpSessionProposals) {
134 return this.rtpSessionProposals.containsValue(DeviceDiscoveryState.DISCOVERED) || this.rtpSessionProposals.containsValue(DeviceDiscoveryState.SEARCHING);
135 }
136 }
137
138 private Optional<RtpSessionProposal> findMatchingSessionProposal(final Account account, final Jid with, final Set<Media> media) {
139 synchronized (this.rtpSessionProposals) {
140 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry : this.rtpSessionProposals.entrySet()) {
141 final RtpSessionProposal proposal = entry.getKey();
142 final DeviceDiscoveryState state = entry.getValue();
143 final boolean openProposal = state == DeviceDiscoveryState.DISCOVERED || state == DeviceDiscoveryState.SEARCHING;
144 if (openProposal
145 && proposal.account == account
146 && proposal.with.equals(with.asBareJid())
147 && proposal.media.equals(media)) {
148 return Optional.of(proposal);
149 }
150 }
151 }
152 return Optional.absent();
153 }
154
155 private boolean hasMatchingRtpSession(final Account account, final Jid with, final Set<Media> media) {
156 for (AbstractJingleConnection connection : this.connections.values()) {
157 if (connection instanceof JingleRtpConnection) {
158 final JingleRtpConnection rtpConnection = (JingleRtpConnection) connection;
159 if (rtpConnection.isTerminated()) {
160 continue;
161 }
162 if (rtpConnection.getId().account == account
163 && rtpConnection.getId().with.asBareJid().equals(with.asBareJid())
164 && rtpConnection.getMedia().equals(media)) {
165 return true;
166 }
167 }
168 }
169 return false;
170 }
171
172 private boolean isWithStrangerAndStrangerNotificationsAreOff(final Account account, Jid with) {
173 final boolean notifyForStrangers = mXmppConnectionService.getNotificationService().notificationsFromStrangers();
174 if (notifyForStrangers) {
175 return false;
176 }
177 final Contact contact = account.getRoster().getContact(with);
178 return !contact.showInContactList();
179 }
180
181 ScheduledFuture<?> schedule(final Runnable runnable, final long delay, final TimeUnit timeUnit) {
182 return SCHEDULED_EXECUTOR_SERVICE.schedule(runnable, delay, timeUnit);
183 }
184
185 void respondWithJingleError(final Account account, final IqPacket original, String jingleCondition, String condition, String conditionType) {
186 final IqPacket response = original.generateResponse(IqPacket.TYPE.ERROR);
187 final Element error = response.addChild("error");
188 error.setAttribute("type", conditionType);
189 error.addChild(condition, "urn:ietf:params:xml:ns:xmpp-stanzas");
190 error.addChild(jingleCondition, "urn:xmpp:jingle:errors:1");
191 account.getXmppConnection().sendIqPacket(response, null);
192 }
193
194 public void deliverMessage(final Account account, final Jid to, final Jid from, final Element message, String remoteMsgId, String serverMsgId, long timestamp) {
195 Preconditions.checkArgument(Namespace.JINGLE_MESSAGE.equals(message.getNamespace()));
196 final String sessionId = message.getAttribute("id");
197 if (sessionId == null) {
198 return;
199 }
200 if ("accept".equals(message.getName())) {
201 for (AbstractJingleConnection connection : connections.values()) {
202 if (connection instanceof JingleRtpConnection) {
203 final JingleRtpConnection rtpConnection = (JingleRtpConnection) connection;
204 final AbstractJingleConnection.Id id = connection.getId();
205 if (id.account == account && id.sessionId.equals(sessionId)) {
206 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
207 return;
208 }
209 }
210 }
211 return;
212 }
213 final boolean fromSelf = from.asBareJid().equals(account.getJid().asBareJid());
214 final boolean addressedDirectly = to != null && to.equals(account.getJid());
215 final AbstractJingleConnection.Id id;
216 if (fromSelf) {
217 if (to != null && to.isFullJid()) {
218 id = AbstractJingleConnection.Id.of(account, to, sessionId);
219 } else {
220 return;
221 }
222 } else {
223 id = AbstractJingleConnection.Id.of(account, from, sessionId);
224 }
225 final AbstractJingleConnection existingJingleConnection = connections.get(id);
226 if (existingJingleConnection != null) {
227 if (existingJingleConnection instanceof JingleRtpConnection) {
228 ((JingleRtpConnection) existingJingleConnection).deliveryMessage(from, message, serverMsgId, timestamp);
229 } else {
230 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": " + existingJingleConnection.getClass().getName() + " does not support jingle messages");
231 }
232 return;
233 }
234
235 if (fromSelf) {
236 if ("proceed".equals(message.getName())) {
237 final Conversation c = mXmppConnectionService.findOrCreateConversation(account, id.with, false, false);
238 final Message previousBusy = c.findRtpSession(sessionId, Message.STATUS_RECEIVED);
239 if (previousBusy != null) {
240 previousBusy.setBody(new RtpSessionStatus(true, 0).toString());
241 if (serverMsgId != null) {
242 previousBusy.setServerMsgId(serverMsgId);
243 }
244 previousBusy.setTime(timestamp);
245 mXmppConnectionService.updateMessage(previousBusy, true);
246 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": updated previous busy because call got picked up by another device");
247 return;
248 }
249 }
250 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignore jingle message from self");
251 return;
252 }
253
254 if ("propose".equals(message.getName())) {
255 final Propose propose = Propose.upgrade(message);
256 final List<GenericDescription> descriptions = propose.getDescriptions();
257 final Collection<RtpDescription> rtpDescriptions = Collections2.transform(
258 Collections2.filter(descriptions, d -> d instanceof RtpDescription),
259 input -> (RtpDescription) input
260 );
261 if (rtpDescriptions.size() > 0 && rtpDescriptions.size() == descriptions.size() && !usesTor(account)) {
262 final Collection<Media> media = Collections2.transform(rtpDescriptions, RtpDescription::getMedia);
263 if (media.contains(Media.UNKNOWN)) {
264 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": encountered unknown media in session proposal. " + propose);
265 return;
266 }
267 final Optional<RtpSessionProposal> matchingSessionProposal = findMatchingSessionProposal(account, id.with, ImmutableSet.copyOf(media));
268 if (matchingSessionProposal.isPresent()) {
269 final String ourSessionId = matchingSessionProposal.get().sessionId;
270 final String theirSessionId = id.sessionId;
271 if (ComparisonChain.start()
272 .compare(ourSessionId, theirSessionId)
273 .compare(account.getJid().toEscapedString(), id.with.toEscapedString())
274 .result() > 0) {
275 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": our session lost tie break. automatically accepting their session. winning Session=" + theirSessionId);
276 //TODO a retract for this reason should probably include some indication of tie break
277 retractSessionProposal(matchingSessionProposal.get());
278 final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, from);
279 this.connections.put(id, rtpConnection);
280 rtpConnection.setProposedMedia(ImmutableSet.copyOf(media));
281 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
282 } else {
283 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": our session won tie break. waiting for other party to accept. winningSession=" + ourSessionId);
284 }
285 return;
286 }
287 final boolean stranger = isWithStrangerAndStrangerNotificationsAreOff(account, id.with);
288 if (isBusy() || stranger) {
289 writeLogMissedIncoming(account, id.with.asBareJid(), id.sessionId, serverMsgId, timestamp);
290 if (stranger) {
291 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring call proposal from stranger " + id.with);
292 return;
293 }
294 final int activeDevices = account.activeDevicesWithRtpCapability();
295 Log.d(Config.LOGTAG, "active devices with rtp capability: " + activeDevices);
296 if (activeDevices == 0) {
297 final MessagePacket reject = mXmppConnectionService.getMessageGenerator().sessionReject(from, sessionId);
298 mXmppConnectionService.sendMessagePacket(account, reject);
299 } else {
300 Log.d(Config.LOGTAG, id.account.getJid().asBareJid() + ": ignoring proposal because busy on this device but there are other devices");
301 }
302 } else {
303 final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, from);
304 this.connections.put(id, rtpConnection);
305 rtpConnection.setProposedMedia(ImmutableSet.copyOf(media));
306 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
307 }
308 } else {
309 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to react to proposed session with " + rtpDescriptions.size() + " rtp descriptions of " + descriptions.size() + " total descriptions");
310 }
311 } else if (addressedDirectly && "proceed".equals(message.getName())) {
312 synchronized (rtpSessionProposals) {
313 final RtpSessionProposal proposal = getRtpSessionProposal(account, from.asBareJid(), sessionId);
314 if (proposal != null) {
315 rtpSessionProposals.remove(proposal);
316 final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, account.getJid());
317 rtpConnection.setProposedMedia(proposal.media);
318 this.connections.put(id, rtpConnection);
319 rtpConnection.transitionOrThrow(AbstractJingleConnection.State.PROPOSED);
320 rtpConnection.deliveryMessage(from, message, serverMsgId, timestamp);
321 } else {
322 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": no rtp session proposal found for " + from + " to deliver proceed");
323 if (remoteMsgId == null) {
324 return;
325 }
326 final MessagePacket errorMessage = new MessagePacket();
327 errorMessage.setTo(from);
328 errorMessage.setId(remoteMsgId);
329 errorMessage.setType(MessagePacket.TYPE_ERROR);
330 final Element error = errorMessage.addChild("error");
331 error.setAttribute("code", "404");
332 error.setAttribute("type", "cancel");
333 error.addChild("item-not-found", "urn:ietf:params:xml:ns:xmpp-stanzas");
334 mXmppConnectionService.sendMessagePacket(account, errorMessage);
335 }
336 }
337 } else if (addressedDirectly && "reject".equals(message.getName())) {
338 final RtpSessionProposal proposal = getRtpSessionProposal(account, from.asBareJid(), sessionId);
339 synchronized (rtpSessionProposals) {
340 if (proposal != null && rtpSessionProposals.remove(proposal) != null) {
341 writeLogMissedOutgoing(account, proposal.with, proposal.sessionId, serverMsgId, timestamp);
342 toneManager.transition(RtpEndUserState.DECLINED_OR_BUSY, proposal.media);
343 mXmppConnectionService.notifyJingleRtpConnectionUpdate(account, proposal.with, proposal.sessionId, RtpEndUserState.DECLINED_OR_BUSY);
344 } else {
345 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": no rtp session proposal found for " + from + " to deliver reject");
346 }
347 }
348 } else {
349 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": retrieved out of order jingle message"+message);
350 }
351
352 }
353
354 private RtpSessionProposal getRtpSessionProposal(final Account account, Jid from, String sessionId) {
355 for (RtpSessionProposal rtpSessionProposal : rtpSessionProposals.keySet()) {
356 if (rtpSessionProposal.sessionId.equals(sessionId) && rtpSessionProposal.with.equals(from) && rtpSessionProposal.account.getJid().equals(account.getJid())) {
357 return rtpSessionProposal;
358 }
359 }
360 return null;
361 }
362
363 private void writeLogMissedOutgoing(final Account account, Jid with, final String sessionId, String serverMsgId, long timestamp) {
364 final Conversation conversation = mXmppConnectionService.findOrCreateConversation(
365 account,
366 with.asBareJid(),
367 false,
368 false
369 );
370 final Message message = new Message(
371 conversation,
372 Message.STATUS_SEND,
373 Message.TYPE_RTP_SESSION,
374 sessionId
375 );
376 message.setBody(new RtpSessionStatus(false, 0).toString());
377 message.setServerMsgId(serverMsgId);
378 message.setTime(timestamp);
379 writeMessage(message);
380 }
381
382 private void writeLogMissedIncoming(final Account account, Jid with, final String sessionId, String serverMsgId, long timestamp) {
383 final Conversation conversation = mXmppConnectionService.findOrCreateConversation(
384 account,
385 with.asBareJid(),
386 false,
387 false
388 );
389 final Message message = new Message(
390 conversation,
391 Message.STATUS_RECEIVED,
392 Message.TYPE_RTP_SESSION,
393 sessionId
394 );
395 message.setBody(new RtpSessionStatus(false, 0).toString());
396 message.setServerMsgId(serverMsgId);
397 message.setTime(timestamp);
398 writeMessage(message);
399 }
400
401 private void writeMessage(final Message message) {
402 final Conversational conversational = message.getConversation();
403 if (conversational instanceof Conversation) {
404 ((Conversation) conversational).add(message);
405 mXmppConnectionService.databaseBackend.createMessage(message);
406 mXmppConnectionService.updateConversationUi();
407 } else {
408 throw new IllegalStateException("Somehow the conversation in a message was a stub");
409 }
410 }
411
412 public void startJingleFileTransfer(final Message message) {
413 Preconditions.checkArgument(message.isFileOrImage(), "Message is not of type file or image");
414 final Transferable old = message.getTransferable();
415 if (old != null) {
416 old.cancel();
417 }
418 final Account account = message.getConversation().getAccount();
419 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(message);
420 final JingleFileTransferConnection connection = new JingleFileTransferConnection(this, id, account.getJid());
421 mXmppConnectionService.markMessage(message, Message.STATUS_WAITING);
422 this.connections.put(id, connection);
423 connection.init(message);
424 }
425
426 public Optional<OngoingRtpSession> getOngoingRtpConnection(final Contact contact) {
427 for (final Map.Entry<AbstractJingleConnection.Id, AbstractJingleConnection> entry : this.connections.entrySet()) {
428 if (entry.getValue() instanceof JingleRtpConnection) {
429 final AbstractJingleConnection.Id id = entry.getKey();
430 if (id.account == contact.getAccount() && id.with.asBareJid().equals(contact.getJid().asBareJid())) {
431 return Optional.of(id);
432 }
433 }
434 }
435 synchronized (this.rtpSessionProposals) {
436 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry : this.rtpSessionProposals.entrySet()) {
437 RtpSessionProposal proposal = entry.getKey();
438 if (proposal.account == contact.getAccount() && contact.getJid().asBareJid().equals(proposal.with)) {
439 final DeviceDiscoveryState preexistingState = entry.getValue();
440 if (preexistingState != null && preexistingState != DeviceDiscoveryState.FAILED) {
441 return Optional.of(proposal);
442 }
443 }
444 }
445 }
446 return Optional.absent();
447 }
448
449 void finishConnection(final AbstractJingleConnection connection) {
450 final AbstractJingleConnection.Id id = connection.getId();
451 if (this.connections.remove(id) == null) {
452 throw new IllegalStateException(String.format("Unable to finish connection with id=%s", id.toString()));
453 }
454 }
455
456 void getPrimaryCandidate(final Account account, final boolean initiator, final OnPrimaryCandidateFound listener) {
457 if (Config.DISABLE_PROXY_LOOKUP) {
458 listener.onPrimaryCandidateFound(false, null);
459 return;
460 }
461 if (!this.primaryCandidates.containsKey(account.getJid().asBareJid())) {
462 final Jid proxy = account.getXmppConnection().findDiscoItemByFeature(Namespace.BYTE_STREAMS);
463 if (proxy != null) {
464 IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
465 iq.setTo(proxy);
466 iq.query(Namespace.BYTE_STREAMS);
467 account.getXmppConnection().sendIqPacket(iq, new OnIqPacketReceived() {
468
469 @Override
470 public void onIqPacketReceived(Account account, IqPacket packet) {
471 final Element streamhost = packet.query().findChild("streamhost", Namespace.BYTE_STREAMS);
472 final String host = streamhost == null ? null : streamhost.getAttribute("host");
473 final String port = streamhost == null ? null : streamhost.getAttribute("port");
474 if (host != null && port != null) {
475 try {
476 JingleCandidate candidate = new JingleCandidate(nextRandomId(), true);
477 candidate.setHost(host);
478 candidate.setPort(Integer.parseInt(port));
479 candidate.setType(JingleCandidate.TYPE_PROXY);
480 candidate.setJid(proxy);
481 candidate.setPriority(655360 + (initiator ? 30 : 0));
482 primaryCandidates.put(account.getJid().asBareJid(), candidate);
483 listener.onPrimaryCandidateFound(true, candidate);
484 } catch (final NumberFormatException e) {
485 listener.onPrimaryCandidateFound(false, null);
486 }
487 } else {
488 listener.onPrimaryCandidateFound(false, null);
489 }
490 }
491 });
492 } else {
493 listener.onPrimaryCandidateFound(false, null);
494 }
495
496 } else {
497 listener.onPrimaryCandidateFound(true,
498 this.primaryCandidates.get(account.getJid().asBareJid()));
499 }
500 }
501
502 public void retractSessionProposal(final Account account, final Jid with) {
503 synchronized (this.rtpSessionProposals) {
504 RtpSessionProposal matchingProposal = null;
505 for (RtpSessionProposal proposal : this.rtpSessionProposals.keySet()) {
506 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
507 matchingProposal = proposal;
508 break;
509 }
510 }
511 if (matchingProposal != null) {
512 retractSessionProposal(matchingProposal);
513 }
514 }
515 }
516
517 private void retractSessionProposal(RtpSessionProposal rtpSessionProposal) {
518 final Account account = rtpSessionProposal.account;
519 toneManager.transition(RtpEndUserState.ENDED, rtpSessionProposal.media);
520 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": retracting rtp session proposal with " + rtpSessionProposal.with);
521 this.rtpSessionProposals.remove(rtpSessionProposal);
522 final MessagePacket messagePacket = mXmppConnectionService.getMessageGenerator().sessionRetract(rtpSessionProposal);
523 writeLogMissedOutgoing(account, rtpSessionProposal.with, rtpSessionProposal.sessionId, null, System.currentTimeMillis());
524 mXmppConnectionService.sendMessagePacket(account, messagePacket);
525 }
526
527 public String initializeRtpSession(final Account account, final Jid with, final Set<Media> media) {
528 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, with);
529 final JingleRtpConnection rtpConnection = new JingleRtpConnection(this, id, account.getJid());
530 rtpConnection.setProposedMedia(media);
531 this.connections.put(id, rtpConnection);
532 rtpConnection.sendSessionInitiate();
533 return id.sessionId;
534 }
535
536 public void proposeJingleRtpSession(final Account account, final Jid with, final Set<Media> media) {
537 synchronized (this.rtpSessionProposals) {
538 for (Map.Entry<RtpSessionProposal, DeviceDiscoveryState> entry : this.rtpSessionProposals.entrySet()) {
539 RtpSessionProposal proposal = entry.getKey();
540 if (proposal.account == account && with.asBareJid().equals(proposal.with)) {
541 final DeviceDiscoveryState preexistingState = entry.getValue();
542 if (preexistingState != null && preexistingState != DeviceDiscoveryState.FAILED) {
543 final RtpEndUserState endUserState = preexistingState.toEndUserState();
544 toneManager.transition(endUserState, media);
545 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
546 account,
547 with,
548 proposal.sessionId,
549 endUserState
550 );
551 return;
552 }
553 }
554 }
555 if (isBusy()) {
556 if (hasMatchingRtpSession(account, with, media)) {
557 Log.d(Config.LOGTAG, "ignoring request to propose jingle session because the other party already created one for us");
558 return;
559 }
560 throw new IllegalStateException("There is already a running RTP session. This should have been caught by the UI");
561 }
562 final RtpSessionProposal proposal = RtpSessionProposal.of(account, with.asBareJid(), media);
563 this.rtpSessionProposals.put(proposal, DeviceDiscoveryState.SEARCHING);
564 mXmppConnectionService.notifyJingleRtpConnectionUpdate(
565 account,
566 proposal.with,
567 proposal.sessionId,
568 RtpEndUserState.FINDING_DEVICE
569 );
570 final MessagePacket messagePacket = mXmppConnectionService.getMessageGenerator().sessionProposal(proposal);
571 Log.d(Config.LOGTAG, messagePacket.toString());
572 mXmppConnectionService.sendMessagePacket(account, messagePacket);
573 }
574 }
575
576 public void deliverIbbPacket(Account account, IqPacket packet) {
577 final String sid;
578 final Element payload;
579 if (packet.hasChild("open", Namespace.IBB)) {
580 payload = packet.findChild("open", Namespace.IBB);
581 sid = payload.getAttribute("sid");
582 } else if (packet.hasChild("data", Namespace.IBB)) {
583 payload = packet.findChild("data", Namespace.IBB);
584 sid = payload.getAttribute("sid");
585 } else if (packet.hasChild("close", Namespace.IBB)) {
586 payload = packet.findChild("close", Namespace.IBB);
587 sid = payload.getAttribute("sid");
588 } else {
589 payload = null;
590 sid = null;
591 }
592 if (sid != null) {
593 for (final AbstractJingleConnection connection : this.connections.values()) {
594 if (connection instanceof JingleFileTransferConnection) {
595 final JingleFileTransferConnection fileTransfer = (JingleFileTransferConnection) connection;
596 final JingleTransport transport = fileTransfer.getTransport();
597 if (transport instanceof JingleInBandTransport) {
598 final JingleInBandTransport inBandTransport = (JingleInBandTransport) transport;
599 if (inBandTransport.matches(account, sid)) {
600 inBandTransport.deliverPayload(packet, payload);
601 }
602 return;
603 }
604 }
605 }
606 }
607 Log.d(Config.LOGTAG, "unable to deliver ibb packet: " + packet.toString());
608 account.getXmppConnection().sendIqPacket(packet.generateResponse(IqPacket.TYPE.ERROR), null);
609 }
610
611 public void notifyRebound() {
612 for (final AbstractJingleConnection connection : this.connections.values()) {
613 connection.notifyRebound();
614 }
615 }
616
617 public WeakReference<JingleRtpConnection> findJingleRtpConnection(Account account, Jid with, String sessionId) {
618 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, with, sessionId);
619 final AbstractJingleConnection connection = connections.get(id);
620 if (connection instanceof JingleRtpConnection) {
621 return new WeakReference<>((JingleRtpConnection) connection);
622 }
623 return null;
624 }
625
626 public void updateProposedSessionDiscovered(Account account, Jid from, String sessionId, final DeviceDiscoveryState target) {
627 synchronized (this.rtpSessionProposals) {
628 final RtpSessionProposal sessionProposal = getRtpSessionProposal(account, from.asBareJid(), sessionId);
629 final DeviceDiscoveryState currentState = sessionProposal == null ? null : rtpSessionProposals.get(sessionProposal);
630 if (currentState == null) {
631 Log.d(Config.LOGTAG, "unable to find session proposal for session id " + sessionId);
632 return;
633 }
634 if (currentState == DeviceDiscoveryState.DISCOVERED) {
635 Log.d(Config.LOGTAG, "session proposal already at discovered. not going to fall back");
636 return;
637 }
638 this.rtpSessionProposals.put(sessionProposal, target);
639 final RtpEndUserState endUserState = target.toEndUserState();
640 toneManager.transition(endUserState, sessionProposal.media);
641 mXmppConnectionService.notifyJingleRtpConnectionUpdate(account, sessionProposal.with, sessionProposal.sessionId, endUserState);
642 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": flagging session " + sessionId + " as " + target);
643 }
644 }
645
646 public void rejectRtpSession(final String sessionId) {
647 for (final AbstractJingleConnection connection : this.connections.values()) {
648 if (connection.getId().sessionId.equals(sessionId)) {
649 if (connection instanceof JingleRtpConnection) {
650 ((JingleRtpConnection) connection).rejectCall();
651 }
652 }
653 }
654 }
655
656 public void endRtpSession(final String sessionId) {
657 for (final AbstractJingleConnection connection : this.connections.values()) {
658 if (connection.getId().sessionId.equals(sessionId)) {
659 if (connection instanceof JingleRtpConnection) {
660 ((JingleRtpConnection) connection).endCall();
661 }
662 }
663 }
664 }
665
666 public void failProceed(Account account, final Jid with, String sessionId) {
667 final AbstractJingleConnection.Id id = AbstractJingleConnection.Id.of(account, with, sessionId);
668 final AbstractJingleConnection existingJingleConnection = connections.get(id);
669 if (existingJingleConnection instanceof JingleRtpConnection) {
670 ((JingleRtpConnection) existingJingleConnection).deliverFailedProceed();
671 }
672 }
673
674 void ensureConnectionIsRegistered(final AbstractJingleConnection connection) {
675 if (connections.containsValue(connection)) {
676 return;
677 }
678 final IllegalStateException e = new IllegalStateException("JingleConnection has not been registered with connection manager");
679 Log.e(Config.LOGTAG, "ensureConnectionIsRegistered() failed. Going to throw", e);
680 throw e;
681 }
682
683 void endSession(AbstractJingleConnection.Id id, final AbstractJingleConnection.State state) {
684 this.endedSessions.put(PersistableSessionId.of(id), state);
685 }
686
687 private static class PersistableSessionId {
688 private final Jid with;
689 private final String sessionId;
690
691 private PersistableSessionId(Jid with, String sessionId) {
692 this.with = with;
693 this.sessionId = sessionId;
694 }
695
696 public static PersistableSessionId of(AbstractJingleConnection.Id id) {
697 return new PersistableSessionId(id.with, id.sessionId);
698 }
699
700 @Override
701 public boolean equals(Object o) {
702 if (this == o) return true;
703 if (o == null || getClass() != o.getClass()) return false;
704 PersistableSessionId that = (PersistableSessionId) o;
705 return Objects.equal(with, that.with) &&
706 Objects.equal(sessionId, that.sessionId);
707 }
708
709 @Override
710 public int hashCode() {
711 return Objects.hashCode(with, sessionId);
712 }
713 }
714
715 public enum DeviceDiscoveryState {
716 SEARCHING, DISCOVERED, FAILED;
717
718 public RtpEndUserState toEndUserState() {
719 switch (this) {
720 case SEARCHING:
721 return RtpEndUserState.FINDING_DEVICE;
722 case DISCOVERED:
723 return RtpEndUserState.RINGING;
724 default:
725 return RtpEndUserState.CONNECTIVITY_ERROR;
726 }
727 }
728 }
729
730 public static class RtpSessionProposal implements OngoingRtpSession {
731 public final Jid with;
732 public final String sessionId;
733 public final Set<Media> media;
734 private final Account account;
735
736 private RtpSessionProposal(Account account, Jid with, String sessionId) {
737 this(account, with, sessionId, Collections.emptySet());
738 }
739
740 private RtpSessionProposal(Account account, Jid with, String sessionId, Set<Media> media) {
741 this.account = account;
742 this.with = with;
743 this.sessionId = sessionId;
744 this.media = media;
745 }
746
747 public static RtpSessionProposal of(Account account, Jid with, Set<Media> media) {
748 return new RtpSessionProposal(account, with, nextRandomId(), media);
749 }
750
751 @Override
752 public boolean equals(Object o) {
753 if (this == o) return true;
754 if (o == null || getClass() != o.getClass()) return false;
755 RtpSessionProposal proposal = (RtpSessionProposal) o;
756 return Objects.equal(account.getJid(), proposal.account.getJid()) &&
757 Objects.equal(with, proposal.with) &&
758 Objects.equal(sessionId, proposal.sessionId);
759 }
760
761 @Override
762 public int hashCode() {
763 return Objects.hashCode(account.getJid(), with, sessionId);
764 }
765
766 @Override
767 public Account getAccount() {
768 return account;
769 }
770
771 @Override
772 public Jid getWith() {
773 return with;
774 }
775
776 @Override
777 public String getSessionId() {
778 return sessionId;
779 }
780 }
781}