1package eu.siacs.conversations.xmpp;
2
3import static eu.siacs.conversations.utils.Random.SECURE_RANDOM;
4
5import android.content.Context;
6import android.graphics.Bitmap;
7import android.graphics.BitmapFactory;
8import android.os.Build;
9import android.os.SystemClock;
10import android.security.KeyChain;
11import android.util.Base64;
12import android.util.Log;
13import android.util.Pair;
14import android.util.SparseArray;
15
16import androidx.annotation.NonNull;
17
18import com.google.common.base.Predicates;
19import com.google.common.base.Strings;
20import com.google.common.collect.Collections2;
21
22import org.xmlpull.v1.XmlPullParserException;
23
24import java.io.ByteArrayInputStream;
25import java.io.IOException;
26import java.io.InputStream;
27import java.net.ConnectException;
28import java.net.IDN;
29import java.net.InetAddress;
30import java.net.InetSocketAddress;
31import java.net.Socket;
32import java.net.UnknownHostException;
33import java.security.KeyManagementException;
34import java.security.NoSuchAlgorithmException;
35import java.security.Principal;
36import java.security.PrivateKey;
37import java.security.cert.X509Certificate;
38import java.util.ArrayList;
39import java.util.Arrays;
40import java.util.Collection;
41import java.util.Collections;
42import java.util.HashMap;
43import java.util.HashSet;
44import java.util.Hashtable;
45import java.util.Iterator;
46import java.util.List;
47import java.util.Map.Entry;
48import java.util.Set;
49import java.util.concurrent.CountDownLatch;
50import java.util.concurrent.TimeUnit;
51import java.util.concurrent.atomic.AtomicBoolean;
52import java.util.concurrent.atomic.AtomicInteger;
53import java.util.regex.Matcher;
54
55import javax.net.ssl.KeyManager;
56import javax.net.ssl.SSLContext;
57import javax.net.ssl.SSLPeerUnverifiedException;
58import javax.net.ssl.SSLSocket;
59import javax.net.ssl.SSLSocketFactory;
60import javax.net.ssl.X509KeyManager;
61import javax.net.ssl.X509TrustManager;
62
63import eu.siacs.conversations.Config;
64import eu.siacs.conversations.R;
65import eu.siacs.conversations.crypto.XmppDomainVerifier;
66import eu.siacs.conversations.crypto.axolotl.AxolotlService;
67import eu.siacs.conversations.crypto.sasl.ChannelBinding;
68import eu.siacs.conversations.crypto.sasl.SaslMechanism;
69import eu.siacs.conversations.entities.Account;
70import eu.siacs.conversations.entities.Message;
71import eu.siacs.conversations.entities.ServiceDiscoveryResult;
72import eu.siacs.conversations.generator.IqGenerator;
73import eu.siacs.conversations.http.HttpConnectionManager;
74import eu.siacs.conversations.persistance.FileBackend;
75import eu.siacs.conversations.services.MemorizingTrustManager;
76import eu.siacs.conversations.services.MessageArchiveService;
77import eu.siacs.conversations.services.NotificationService;
78import eu.siacs.conversations.services.XmppConnectionService;
79import eu.siacs.conversations.utils.CryptoHelper;
80import eu.siacs.conversations.utils.Patterns;
81import eu.siacs.conversations.utils.PhoneHelper;
82import eu.siacs.conversations.utils.Resolver;
83import eu.siacs.conversations.utils.SSLSocketHelper;
84import eu.siacs.conversations.utils.SocksSocketFactory;
85import eu.siacs.conversations.utils.XmlHelper;
86import eu.siacs.conversations.xml.Element;
87import eu.siacs.conversations.xml.LocalizedContent;
88import eu.siacs.conversations.xml.Namespace;
89import eu.siacs.conversations.xml.Tag;
90import eu.siacs.conversations.xml.TagWriter;
91import eu.siacs.conversations.xml.XmlReader;
92import eu.siacs.conversations.xmpp.forms.Data;
93import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
94import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
95import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
96import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
97import eu.siacs.conversations.xmpp.stanzas.IqPacket;
98import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
99import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
100import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
101import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
102import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
103import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
104import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
105import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
106import okhttp3.HttpUrl;
107
108public class XmppConnection implements Runnable {
109
110 private static final int PACKET_IQ = 0;
111 private static final int PACKET_MESSAGE = 1;
112 private static final int PACKET_PRESENCE = 2;
113 public final OnIqPacketReceived registrationResponseListener =
114 (account, packet) -> {
115 if (packet.getType() == IqPacket.TYPE.RESULT) {
116 account.setOption(Account.OPTION_REGISTER, false);
117 Log.d(
118 Config.LOGTAG,
119 account.getJid().asBareJid()
120 + ": successfully registered new account on server");
121 throw new StateChangingError(Account.State.REGISTRATION_SUCCESSFUL);
122 } else {
123 final List<String> PASSWORD_TOO_WEAK_MSGS =
124 Arrays.asList(
125 "The password is too weak", "Please use a longer password.");
126 Element error = packet.findChild("error");
127 Account.State state = Account.State.REGISTRATION_FAILED;
128 if (error != null) {
129 if (error.hasChild("conflict")) {
130 state = Account.State.REGISTRATION_CONFLICT;
131 } else if (error.hasChild("resource-constraint")
132 && "wait".equals(error.getAttribute("type"))) {
133 state = Account.State.REGISTRATION_PLEASE_WAIT;
134 } else if (error.hasChild("not-acceptable")
135 && PASSWORD_TOO_WEAK_MSGS.contains(
136 error.findChildContent("text"))) {
137 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
138 }
139 }
140 throw new StateChangingError(state);
141 }
142 };
143 protected final Account account;
144 private final Features features = new Features(this);
145 private final HashMap<Jid, ServiceDiscoveryResult> disco = new HashMap<>();
146 private final HashMap<String, Jid> commands = new HashMap<>();
147 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
148 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks =
149 new Hashtable<>();
150 private final Set<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners =
151 new HashSet<>();
152 private final XmppConnectionService mXmppConnectionService;
153 private Socket socket;
154 private XmlReader tagReader;
155 private TagWriter tagWriter = new TagWriter();
156 private boolean shouldAuthenticate = true;
157 private boolean inSmacksSession = false;
158 private boolean isBound = false;
159 private Element streamFeatures;
160 private String streamId = null;
161 private int stanzasReceived = 0;
162 private int stanzasSent = 0;
163 private long lastPacketReceived = 0;
164 private long lastPingSent = 0;
165 private long lastConnect = 0;
166 private long lastSessionStarted = 0;
167 private long lastDiscoStarted = 0;
168 private boolean isMamPreferenceAlways = false;
169 private final AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
170 private final AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
171 private final AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
172 private final AtomicInteger mSmCatchupMessageCounter = new AtomicInteger(0);
173 private boolean mInteractive = false;
174 private int attempt = 0;
175 private OnPresencePacketReceived presenceListener = null;
176 private OnJinglePacketReceived jingleListener = null;
177 private OnIqPacketReceived unregisteredIqListener = null;
178 private OnMessagePacketReceived messageListener = null;
179 private OnStatusChanged statusListener = null;
180 private OnBindListener bindListener = null;
181 private OnMessageAcknowledged acknowledgedListener = null;
182 private SaslMechanism saslMechanism;
183 private HttpUrl redirectionUrl = null;
184 private String verifiedHostname = null;
185 private volatile Thread mThread;
186 private CountDownLatch mStreamCountDownLatch;
187
188 public XmppConnection(final Account account, final XmppConnectionService service) {
189 this.account = account;
190 this.mXmppConnectionService = service;
191 }
192
193 private static void fixResource(Context context, Account account) {
194 String resource = account.getResource();
195 int fixedPartLength =
196 context.getString(R.string.app_name).length() + 1; // include the trailing dot
197 int randomPartLength = 4; // 3 bytes
198 if (resource != null && resource.length() > fixedPartLength + randomPartLength) {
199 if (validBase64(
200 resource.substring(fixedPartLength, fixedPartLength + randomPartLength))) {
201 account.setResource(resource.substring(0, fixedPartLength + randomPartLength));
202 }
203 }
204 }
205
206 private static boolean validBase64(String input) {
207 try {
208 return Base64.decode(input, Base64.URL_SAFE).length == 3;
209 } catch (Throwable throwable) {
210 return false;
211 }
212 }
213
214 private void changeStatus(final Account.State nextStatus) {
215 synchronized (this) {
216 if (Thread.currentThread().isInterrupted()) {
217 Log.d(
218 Config.LOGTAG,
219 account.getJid().asBareJid()
220 + ": not changing status to "
221 + nextStatus
222 + " because thread was interrupted");
223 return;
224 }
225 if (account.getStatus() != nextStatus) {
226 if ((nextStatus == Account.State.OFFLINE)
227 && (account.getStatus() != Account.State.CONNECTING)
228 && (account.getStatus() != Account.State.ONLINE)
229 && (account.getStatus() != Account.State.DISABLED)) {
230 return;
231 }
232 if (nextStatus == Account.State.ONLINE) {
233 this.attempt = 0;
234 }
235 account.setStatus(nextStatus);
236 } else {
237 return;
238 }
239 }
240 if (statusListener != null) {
241 statusListener.onStatusChanged(account);
242 }
243 }
244
245 public Jid getJidForCommand(final String node) {
246 synchronized (this.commands) {
247 return this.commands.get(node);
248 }
249 }
250
251 public void prepareNewConnection() {
252 this.lastConnect = SystemClock.elapsedRealtime();
253 this.lastPingSent = SystemClock.elapsedRealtime();
254 this.lastDiscoStarted = Long.MAX_VALUE;
255 this.mWaitingForSmCatchup.set(false);
256 this.changeStatus(Account.State.CONNECTING);
257 }
258
259 public boolean isWaitingForSmCatchup() {
260 return mWaitingForSmCatchup.get();
261 }
262
263 public void incrementSmCatchupMessageCounter() {
264 this.mSmCatchupMessageCounter.incrementAndGet();
265 }
266
267 protected void connect() {
268 if (mXmppConnectionService.areMessagesInitialized()) {
269 mXmppConnectionService.resetSendingToWaiting(account);
270 }
271 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
272 features.encryptionEnabled = false;
273 inSmacksSession = false;
274 isBound = false;
275 this.attempt++;
276 this.verifiedHostname =
277 null; // will be set if user entered hostname is being used or hostname was verified
278 // with dnssec
279 try {
280 Socket localSocket;
281 shouldAuthenticate = !account.isOptionSet(Account.OPTION_REGISTER);
282 this.changeStatus(Account.State.CONNECTING);
283 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
284 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
285 if (useTor) {
286 String destination;
287 if (account.getHostname().isEmpty() || account.isOnion()) {
288 destination = account.getServer();
289 } else {
290 destination = account.getHostname();
291 this.verifiedHostname = destination;
292 }
293
294 final int port = account.getPort();
295 final boolean directTls = Resolver.useDirectTls(port);
296
297 Log.d(
298 Config.LOGTAG,
299 account.getJid().asBareJid()
300 + ": connect to "
301 + destination
302 + " via Tor. directTls="
303 + directTls);
304 localSocket = SocksSocketFactory.createSocketOverTor(destination, port);
305
306 if (directTls) {
307 localSocket = upgradeSocketToTls(localSocket);
308 features.encryptionEnabled = true;
309 }
310
311 try {
312 startXmpp(localSocket);
313 } catch (InterruptedException e) {
314 Log.d(
315 Config.LOGTAG,
316 account.getJid().asBareJid()
317 + ": thread was interrupted before beginning stream");
318 return;
319 } catch (Exception e) {
320 throw new IOException(e.getMessage());
321 }
322 } else {
323 final String domain = account.getServer();
324 final List<Resolver.Result> results;
325 final boolean hardcoded = extended && !account.getHostname().isEmpty();
326 if (hardcoded) {
327 results = Resolver.fromHardCoded(account.getHostname(), account.getPort());
328 } else {
329 results = Resolver.resolve(domain);
330 }
331 if (Thread.currentThread().isInterrupted()) {
332 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
333 return;
334 }
335 if (results.size() == 0) {
336 Log.e(
337 Config.LOGTAG,
338 account.getJid().asBareJid() + ": Resolver results were empty");
339 return;
340 }
341 final Resolver.Result storedBackupResult;
342 if (hardcoded) {
343 storedBackupResult = null;
344 } else {
345 storedBackupResult =
346 mXmppConnectionService.databaseBackend.findResolverResult(domain);
347 if (storedBackupResult != null && !results.contains(storedBackupResult)) {
348 results.add(storedBackupResult);
349 Log.d(
350 Config.LOGTAG,
351 account.getJid().asBareJid()
352 + ": loaded backup resolver result from db: "
353 + storedBackupResult);
354 }
355 }
356 for (Iterator<Resolver.Result> iterator = results.iterator();
357 iterator.hasNext(); ) {
358 final Resolver.Result result = iterator.next();
359 if (Thread.currentThread().isInterrupted()) {
360 Log.d(
361 Config.LOGTAG,
362 account.getJid().asBareJid() + ": Thread was interrupted");
363 return;
364 }
365 try {
366 // if tls is true, encryption is implied and must not be started
367 features.encryptionEnabled = result.isDirectTls();
368 verifiedHostname =
369 result.isAuthenticated() ? result.getHostname().toString() : null;
370 Log.d(Config.LOGTAG, "verified hostname " + verifiedHostname);
371 final InetSocketAddress addr;
372 if (result.getIp() != null) {
373 addr = new InetSocketAddress(result.getIp(), result.getPort());
374 Log.d(
375 Config.LOGTAG,
376 account.getJid().asBareJid().toString()
377 + ": using values from resolver "
378 + (result.getHostname() == null
379 ? ""
380 : result.getHostname().toString() + "/")
381 + result.getIp().getHostAddress()
382 + ":"
383 + result.getPort()
384 + " tls: "
385 + features.encryptionEnabled);
386 } else {
387 addr =
388 new InetSocketAddress(
389 IDN.toASCII(result.getHostname().toString()),
390 result.getPort());
391 Log.d(
392 Config.LOGTAG,
393 account.getJid().asBareJid().toString()
394 + ": using values from resolver "
395 + result.getHostname().toString()
396 + ":"
397 + result.getPort()
398 + " tls: "
399 + features.encryptionEnabled);
400 }
401
402 localSocket = new Socket();
403 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
404
405 if (features.encryptionEnabled) {
406 localSocket = upgradeSocketToTls(localSocket);
407 }
408
409 localSocket.setSoTimeout(Config.SOCKET_TIMEOUT * 1000);
410 if (startXmpp(localSocket)) {
411 localSocket.setSoTimeout(
412 0); // reset to 0; once the connection is established we don’t
413 // want this
414 if (!hardcoded && !result.equals(storedBackupResult)) {
415 mXmppConnectionService.databaseBackend.saveResolverResult(
416 domain, result);
417 }
418 break; // successfully connected to server that speaks xmpp
419 } else {
420 FileBackend.close(localSocket);
421 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
422 }
423 } catch (final StateChangingException e) {
424 if (!iterator.hasNext()) {
425 throw e;
426 }
427 } catch (InterruptedException e) {
428 Log.d(
429 Config.LOGTAG,
430 account.getJid().asBareJid()
431 + ": thread was interrupted before beginning stream");
432 return;
433 } catch (final Throwable e) {
434 Log.d(
435 Config.LOGTAG,
436 account.getJid().asBareJid().toString()
437 + ": "
438 + e.getMessage()
439 + "("
440 + e.getClass().getName()
441 + ")");
442 if (!iterator.hasNext()) {
443 throw new UnknownHostException();
444 }
445 }
446 }
447 }
448 processStream();
449 } catch (final SecurityException e) {
450 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
451 } catch (final StateChangingException e) {
452 this.changeStatus(e.state);
453 } catch (final UnknownHostException
454 | ConnectException
455 | SocksSocketFactory.HostNotFoundException e) {
456 this.changeStatus(Account.State.SERVER_NOT_FOUND);
457 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
458 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
459 } catch (final IOException | XmlPullParserException e) {
460 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
461 this.changeStatus(Account.State.OFFLINE);
462 this.attempt = Math.max(0, this.attempt - 1);
463 } finally {
464 if (!Thread.currentThread().isInterrupted()) {
465 forceCloseSocket();
466 } else {
467 Log.d(
468 Config.LOGTAG,
469 account.getJid().asBareJid()
470 + ": not force closing socket because thread was interrupted");
471 }
472 }
473 }
474
475 /**
476 * Starts xmpp protocol, call after connecting to socket
477 *
478 * @return true if server returns with valid xmpp, false otherwise
479 */
480 private boolean startXmpp(Socket socket) throws Exception {
481 if (Thread.currentThread().isInterrupted()) {
482 throw new InterruptedException();
483 }
484 this.socket = socket;
485 tagReader = new XmlReader();
486 if (tagWriter != null) {
487 tagWriter.forceClose();
488 }
489 tagWriter = new TagWriter();
490 tagWriter.setOutputStream(socket.getOutputStream());
491 tagReader.setInputStream(socket.getInputStream());
492 tagWriter.beginDocument();
493 sendStartStream();
494 final Tag tag = tagReader.readTag();
495 if (Thread.currentThread().isInterrupted()) {
496 throw new InterruptedException();
497 }
498 if (socket instanceof SSLSocket) {
499 SSLSocketHelper.log(account, (SSLSocket) socket);
500 }
501 return tag != null && tag.isStart("stream");
502 }
503
504 private SSLSocketFactory getSSLSocketFactory()
505 throws NoSuchAlgorithmException, KeyManagementException {
506 final SSLContext sc = SSLSocketHelper.getSSLContext();
507 final MemorizingTrustManager trustManager =
508 this.mXmppConnectionService.getMemorizingTrustManager();
509 final KeyManager[] keyManager;
510 if (account.getPrivateKeyAlias() != null) {
511 keyManager = new KeyManager[] {new MyKeyManager()};
512 } else {
513 keyManager = null;
514 }
515 final String domain = account.getServer();
516 sc.init(
517 keyManager,
518 new X509TrustManager[] {
519 mInteractive
520 ? trustManager.getInteractive(domain)
521 : trustManager.getNonInteractive(domain)
522 },
523 SECURE_RANDOM);
524 return sc.getSocketFactory();
525 }
526
527 @Override
528 public void run() {
529 synchronized (this) {
530 this.mThread = Thread.currentThread();
531 if (this.mThread.isInterrupted()) {
532 Log.d(
533 Config.LOGTAG,
534 account.getJid().asBareJid()
535 + ": aborting connect because thread was interrupted");
536 return;
537 }
538 forceCloseSocket();
539 }
540 connect();
541 }
542
543 private void processStream() throws XmlPullParserException, IOException {
544 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
545 this.mStreamCountDownLatch = streamCountDownLatch;
546 Tag nextTag = tagReader.readTag();
547 while (nextTag != null && !nextTag.isEnd("stream")) {
548 if (nextTag.isStart("error")) {
549 processStreamError(nextTag);
550 } else if (nextTag.isStart("features")) {
551 processStreamFeatures(nextTag);
552 } else if (nextTag.isStart("proceed", Namespace.TLS)) {
553 switchOverToTls();
554 } else if (nextTag.isStart("success")) {
555 final Element success = tagReader.readElement(nextTag);
556 if (processSuccess(success)) {
557 break;
558 }
559
560 } else if (nextTag.isStart("failure", Namespace.TLS)) {
561 throw new StateChangingException(Account.State.TLS_ERROR);
562 } else if (nextTag.isStart("failure")) {
563 final Element failure = tagReader.readElement(nextTag);
564 processFailure(failure);
565 } else if (nextTag.isStart("continue", Namespace.SASL_2)) {
566 // two step sasl2 - we don’t support this yet
567 throw new StateChangingException(Account.State.INCOMPATIBLE_CLIENT);
568 } else if (nextTag.isStart("challenge")) {
569 final Element challenge = tagReader.readElement(nextTag);
570 processChallenge(challenge);
571 } else if (nextTag.isStart("enabled", Namespace.STREAM_MANAGEMENT)) {
572 final Element enabled = tagReader.readElement(nextTag);
573 processEnabled(enabled);
574 } else if (nextTag.isStart("resumed")) {
575 final Element resumed = tagReader.readElement(nextTag);
576 processResumed(resumed);
577 } else if (nextTag.isStart("r")) {
578 tagReader.readElement(nextTag);
579 if (Config.EXTENDED_SM_LOGGING) {
580 Log.d(
581 Config.LOGTAG,
582 account.getJid().asBareJid()
583 + ": acknowledging stanza #"
584 + this.stanzasReceived);
585 }
586 final AckPacket ack = new AckPacket(this.stanzasReceived);
587 tagWriter.writeStanzaAsync(ack);
588 } else if (nextTag.isStart("a")) {
589 boolean accountUiNeedsRefresh = false;
590 synchronized (NotificationService.CATCHUP_LOCK) {
591 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
592 final int messageCount = mSmCatchupMessageCounter.get();
593 final int pendingIQs = packetCallbacks.size();
594 Log.d(
595 Config.LOGTAG,
596 account.getJid().asBareJid()
597 + ": SM catchup complete (messages="
598 + messageCount
599 + ", pending IQs="
600 + pendingIQs
601 + ")");
602 accountUiNeedsRefresh = true;
603 if (messageCount > 0) {
604 mXmppConnectionService
605 .getNotificationService()
606 .finishBacklog(true, account);
607 }
608 }
609 }
610 if (accountUiNeedsRefresh) {
611 mXmppConnectionService.updateAccountUi();
612 }
613 final Element ack = tagReader.readElement(nextTag);
614 lastPacketReceived = SystemClock.elapsedRealtime();
615 try {
616 final boolean acknowledgedMessages;
617 synchronized (this.mStanzaQueue) {
618 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
619 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence);
620 }
621 if (acknowledgedMessages) {
622 mXmppConnectionService.updateConversationUi();
623 }
624 } catch (NumberFormatException | NullPointerException e) {
625 Log.d(
626 Config.LOGTAG,
627 account.getJid().asBareJid()
628 + ": server send ack without sequence number");
629 }
630 } else if (nextTag.isStart("failed")) {
631 final Element failed = tagReader.readElement(nextTag);
632 processFailed(failed, true);
633 } else if (nextTag.isStart("iq")) {
634 processIq(nextTag);
635 } else if (nextTag.isStart("message")) {
636 processMessage(nextTag);
637 } else if (nextTag.isStart("presence")) {
638 processPresence(nextTag);
639 }
640 nextTag = tagReader.readTag();
641 }
642 if (nextTag != null && nextTag.isEnd("stream")) {
643 streamCountDownLatch.countDown();
644 }
645 }
646
647 private void processChallenge(Element challenge) throws IOException {
648 final SaslMechanism.Version version;
649 try {
650 version = SaslMechanism.Version.of(challenge);
651 } catch (final IllegalArgumentException e) {
652 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
653 }
654 final Element response;
655 if (version == SaslMechanism.Version.SASL) {
656 response = new Element("response", Namespace.SASL);
657 } else if (version == SaslMechanism.Version.SASL_2) {
658 response = new Element("response", Namespace.SASL_2);
659 } else {
660 throw new AssertionError("Missing implementation for " + version);
661 }
662 try {
663 response.setContent(saslMechanism.getResponse(challenge.getContent(), sslSocketOrNull(socket)));
664 } catch (final SaslMechanism.AuthenticationException e) {
665 // TODO: Send auth abort tag.
666 Log.e(Config.LOGTAG, e.toString());
667 throw new StateChangingException(Account.State.UNAUTHORIZED);
668 }
669 tagWriter.writeElement(response);
670 }
671
672 private boolean processSuccess(final Element success)
673 throws IOException, XmlPullParserException {
674 final SaslMechanism.Version version;
675 try {
676 version = SaslMechanism.Version.of(success);
677 } catch (final IllegalArgumentException e) {
678 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
679 }
680 final String challenge;
681 if (version == SaslMechanism.Version.SASL) {
682 challenge = success.getContent();
683 } else if (version == SaslMechanism.Version.SASL_2) {
684 challenge = success.findChildContent("additional-data");
685 } else {
686 throw new AssertionError("Missing implementation for " + version);
687 }
688 try {
689 saslMechanism.getResponse(challenge, sslSocketOrNull(socket));
690 } catch (final SaslMechanism.AuthenticationException e) {
691 Log.e(Config.LOGTAG, String.valueOf(e));
692 throw new StateChangingException(Account.State.UNAUTHORIZED);
693 }
694 Log.d(
695 Config.LOGTAG,
696 account.getJid().asBareJid().toString() + ": logged in (using " + version + ")");
697 account.setPinnedMechanism(saslMechanism);
698 if (version == SaslMechanism.Version.SASL_2) {
699 final String authorizationIdentifier =
700 success.findChildContent("authorization-identifier");
701 final Jid authorizationJid;
702 try {
703 authorizationJid =
704 Strings.isNullOrEmpty(authorizationIdentifier)
705 ? null
706 : Jid.ofEscaped(authorizationIdentifier);
707 } catch (final IllegalArgumentException e) {
708 Log.d(
709 Config.LOGTAG,
710 account.getJid().asBareJid()
711 + ": SASL 2.0 authorization identifier was not a valid jid");
712 throw new StateChangingException(Account.State.BIND_FAILURE);
713 }
714 if (authorizationJid == null) {
715 throw new StateChangingException(Account.State.BIND_FAILURE);
716 }
717 Log.d(
718 Config.LOGTAG,
719 account.getJid().asBareJid()
720 + ": SASL 2.0 authorization identifier was "
721 + authorizationJid);
722 if (!account.getJid().getDomain().equals(authorizationJid.getDomain())) {
723 Log.d(
724 Config.LOGTAG,
725 account.getJid().asBareJid()
726 + ": server tried to re-assign domain to "
727 + authorizationJid.getDomain());
728 throw new StateChangingError(Account.State.BIND_FAILURE);
729 }
730 if (authorizationJid.isFullJid() && account.setJid(authorizationJid)) {
731 Log.d(
732 Config.LOGTAG,
733 account.getJid().asBareJid()
734 + ": jid changed during SASL 2.0. updating database");
735 mXmppConnectionService.databaseBackend.updateAccount(account);
736 }
737 final Element bound = success.findChild("bound", Namespace.BIND2);
738 final Element resumed = success.findChild("resumed", "urn:xmpp:sm:3");
739 final Element failed = success.findChild("failed", "urn:xmpp:sm:3");
740 // TODO check if resumed and bound exist and throw bind failure
741 if (resumed != null && streamId != null) {
742 processResumed(resumed);
743 } else if (failed != null) {
744 processFailed(failed, false); // wait for new stream features
745 }
746 if (bound != null) {
747 this.isBound = true;
748 final Element streamManagementEnabled =
749 bound.findChild("enabled", Namespace.STREAM_MANAGEMENT);
750 final Element carbonsEnabled = bound.findChild("enabled", Namespace.CARBONS);
751 if (streamManagementEnabled != null) {
752 processEnabled(streamManagementEnabled);
753 }
754 if (carbonsEnabled != null) {
755 Log.d(
756 Config.LOGTAG,
757 account.getJid().asBareJid() + ": successfully enabled carbons");
758 features.carbonsEnabled = true;
759 }
760 // TODO if both are set mark account ready for pipelining
761 sendPostBindInitialization(streamManagementEnabled != null, carbonsEnabled != null);
762 }
763 }
764 if (version == SaslMechanism.Version.SASL) {
765 tagReader.reset();
766 sendStartStream();
767 final Tag tag = tagReader.readTag();
768 if (tag != null && tag.isStart("stream")) {
769 processStream();
770 return true;
771 } else {
772 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
773 }
774 } else {
775 return false;
776 }
777 }
778
779 private void processFailure(final Element failure) throws StateChangingException {
780 final SaslMechanism.Version version;
781 try {
782 version = SaslMechanism.Version.of(failure);
783 } catch (final IllegalArgumentException e) {
784 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
785 }
786 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": login failure " + version);
787 if (failure.hasChild("temporary-auth-failure")) {
788 throw new StateChangingException(Account.State.TEMPORARY_AUTH_FAILURE);
789 } else if (failure.hasChild("account-disabled")) {
790 final String text = failure.findChildContent("text");
791 if (Strings.isNullOrEmpty(text)) {
792 throw new StateChangingException(Account.State.UNAUTHORIZED);
793 }
794 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
795 if (matcher.find()) {
796 final HttpUrl url;
797 try {
798 url = HttpUrl.get(text.substring(matcher.start(), matcher.end()));
799 } catch (final IllegalArgumentException e) {
800 throw new StateChangingException(Account.State.UNAUTHORIZED);
801 }
802 if (url.isHttps()) {
803 this.redirectionUrl = url;
804 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
805 }
806 }
807 }
808 throw new StateChangingException(Account.State.UNAUTHORIZED);
809 }
810
811 private static SSLSocket sslSocketOrNull(final Socket socket) {
812 if (socket instanceof SSLSocket) {
813 return (SSLSocket) socket;
814 } else {
815 return null;
816 }
817 }
818
819 private void processEnabled(final Element enabled) {
820 final String streamId;
821 if (enabled.getAttributeAsBoolean("resume")) {
822 streamId = enabled.getAttribute("id");
823 Log.d(
824 Config.LOGTAG,
825 account.getJid().asBareJid().toString()
826 + ": stream management enabled (resumable)");
827 } else {
828 Log.d(
829 Config.LOGTAG,
830 account.getJid().asBareJid().toString() + ": stream management enabled");
831 streamId = null;
832 }
833 this.streamId = streamId;
834 this.stanzasReceived = 0;
835 this.inSmacksSession = true;
836 final RequestPacket r = new RequestPacket();
837 tagWriter.writeStanzaAsync(r);
838 }
839
840 private void processResumed(final Element resumed) throws StateChangingException {
841 this.inSmacksSession = true;
842 this.isBound = true;
843 this.tagWriter.writeStanzaAsync(new RequestPacket());
844 lastPacketReceived = SystemClock.elapsedRealtime();
845 final String h = resumed.getAttribute("h");
846 if (h == null) {
847 resetStreamId();
848 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
849 }
850 final int serverCount;
851 try {
852 serverCount = Integer.parseInt(h);
853 } catch (final NumberFormatException e) {
854 resetStreamId();
855 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
856 }
857 final ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
858 final boolean acknowledgedMessages;
859 synchronized (this.mStanzaQueue) {
860 if (serverCount < stanzasSent) {
861 Log.d(
862 Config.LOGTAG,
863 account.getJid().asBareJid() + ": session resumed with lost packages");
864 stanzasSent = serverCount;
865 } else {
866 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": session resumed");
867 }
868 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
869 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
870 failedStanzas.add(mStanzaQueue.valueAt(i));
871 }
872 mStanzaQueue.clear();
873 }
874 if (acknowledgedMessages) {
875 mXmppConnectionService.updateConversationUi();
876 }
877 Log.d(
878 Config.LOGTAG,
879 account.getJid().asBareJid() + ": resending " + failedStanzas.size() + " stanzas");
880 for (final AbstractAcknowledgeableStanza packet : failedStanzas) {
881 if (packet instanceof MessagePacket) {
882 MessagePacket message = (MessagePacket) packet;
883 mXmppConnectionService.markMessage(
884 account,
885 message.getTo().asBareJid(),
886 message.getId(),
887 Message.STATUS_UNSEND);
888 }
889 sendPacket(packet);
890 }
891 Log.d(
892 Config.LOGTAG,
893 account.getJid().asBareJid() + ": online with resource " + account.getResource());
894 changeStatus(Account.State.ONLINE);
895 }
896
897 private void processFailed(final Element failed, final boolean sendBindRequest) {
898 final int serverCount;
899 try {
900 serverCount = Integer.parseInt(failed.getAttribute("h"));
901 } catch (final NumberFormatException | NullPointerException e) {
902 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
903 resetStreamId();
904 if (sendBindRequest) {
905 sendBindRequest();
906 }
907 return;
908 }
909 Log.d(
910 Config.LOGTAG,
911 account.getJid().asBareJid()
912 + ": resumption failed but server acknowledged stanza #"
913 + serverCount);
914 final boolean acknowledgedMessages;
915 synchronized (this.mStanzaQueue) {
916 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
917 }
918 if (acknowledgedMessages) {
919 mXmppConnectionService.updateConversationUi();
920 }
921 resetStreamId();
922 if (sendBindRequest) {
923 sendBindRequest();
924 }
925 }
926
927 private boolean acknowledgeStanzaUpTo(int serverCount) {
928 if (serverCount > stanzasSent) {
929 Log.e(
930 Config.LOGTAG,
931 "server acknowledged more stanzas than we sent. serverCount="
932 + serverCount
933 + ", ourCount="
934 + stanzasSent);
935 }
936 boolean acknowledgedMessages = false;
937 for (int i = 0; i < mStanzaQueue.size(); ++i) {
938 if (serverCount >= mStanzaQueue.keyAt(i)) {
939 if (Config.EXTENDED_SM_LOGGING) {
940 Log.d(
941 Config.LOGTAG,
942 account.getJid().asBareJid()
943 + ": server acknowledged stanza #"
944 + mStanzaQueue.keyAt(i));
945 }
946 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
947 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
948 final MessagePacket packet = (MessagePacket) stanza;
949 final String id = packet.getId();
950 final Jid to = packet.getTo();
951 if (id != null && to != null) {
952 acknowledgedMessages |=
953 acknowledgedListener.onMessageAcknowledged(account, to, id);
954 }
955 }
956 mStanzaQueue.removeAt(i);
957 i--;
958 }
959 }
960 return acknowledgedMessages;
961 }
962
963 private @NonNull Element processPacket(final Tag currentTag, final int packetType)
964 throws IOException {
965 final Element element;
966 switch (packetType) {
967 case PACKET_IQ:
968 element = new IqPacket();
969 break;
970 case PACKET_MESSAGE:
971 element = new MessagePacket();
972 break;
973 case PACKET_PRESENCE:
974 element = new PresencePacket();
975 break;
976 default:
977 throw new AssertionError("Should never encounter invalid type");
978 }
979 element.setAttributes(currentTag.getAttributes());
980 Tag nextTag = tagReader.readTag();
981 if (nextTag == null) {
982 throw new IOException("interrupted mid tag");
983 }
984 while (!nextTag.isEnd(element.getName())) {
985 if (!nextTag.isNo()) {
986 element.addChild(tagReader.readElement(nextTag));
987 }
988 nextTag = tagReader.readTag();
989 if (nextTag == null) {
990 throw new IOException("interrupted mid tag");
991 }
992 }
993 if (stanzasReceived == Integer.MAX_VALUE) {
994 resetStreamId();
995 throw new IOException("time to restart the session. cant handle >2 billion pcks");
996 }
997 if (inSmacksSession) {
998 ++stanzasReceived;
999 } else if (features.sm()) {
1000 Log.d(
1001 Config.LOGTAG,
1002 account.getJid().asBareJid()
1003 + ": not counting stanza("
1004 + element.getClass().getSimpleName()
1005 + "). Not in smacks session.");
1006 }
1007 lastPacketReceived = SystemClock.elapsedRealtime();
1008 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
1009 Log.d(Config.LOGTAG, "[background stanza] " + element);
1010 }
1011 if (element instanceof IqPacket
1012 && (((IqPacket) element).getType() == IqPacket.TYPE.SET)
1013 && element.hasChild("jingle", Namespace.JINGLE)) {
1014 return JinglePacket.upgrade((IqPacket) element);
1015 } else {
1016 return element;
1017 }
1018 }
1019
1020 private void processIq(final Tag currentTag) throws IOException {
1021 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
1022 if (!packet.valid()) {
1023 Log.e(
1024 Config.LOGTAG,
1025 "encountered invalid iq from='"
1026 + packet.getFrom()
1027 + "' to='"
1028 + packet.getTo()
1029 + "'");
1030 return;
1031 }
1032 if (packet instanceof JinglePacket) {
1033 if (this.jingleListener != null) {
1034 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
1035 }
1036 } else {
1037 OnIqPacketReceived callback = null;
1038 synchronized (this.packetCallbacks) {
1039 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple =
1040 packetCallbacks.get(packet.getId());
1041 if (packetCallbackDuple != null) {
1042 // Packets to the server should have responses from the server
1043 if (packetCallbackDuple.first.toServer(account)) {
1044 if (packet.fromServer(account)) {
1045 callback = packetCallbackDuple.second;
1046 packetCallbacks.remove(packet.getId());
1047 } else {
1048 Log.e(
1049 Config.LOGTAG,
1050 account.getJid().asBareJid().toString()
1051 + ": ignoring spoofed iq packet");
1052 }
1053 } else {
1054 if (packet.getFrom() != null
1055 && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
1056 callback = packetCallbackDuple.second;
1057 packetCallbacks.remove(packet.getId());
1058 } else {
1059 Log.e(
1060 Config.LOGTAG,
1061 account.getJid().asBareJid().toString()
1062 + ": ignoring spoofed iq packet");
1063 }
1064 }
1065 } else if (packet.getType() == IqPacket.TYPE.GET
1066 || packet.getType() == IqPacket.TYPE.SET) {
1067 callback = this.unregisteredIqListener;
1068 }
1069 }
1070 if (callback != null) {
1071 try {
1072 callback.onIqPacketReceived(account, packet);
1073 } catch (StateChangingError error) {
1074 throw new StateChangingException(error.state);
1075 }
1076 }
1077 }
1078 }
1079
1080 private void processMessage(final Tag currentTag) throws IOException {
1081 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
1082 if (!packet.valid()) {
1083 Log.e(
1084 Config.LOGTAG,
1085 "encountered invalid message from='"
1086 + packet.getFrom()
1087 + "' to='"
1088 + packet.getTo()
1089 + "'");
1090 return;
1091 }
1092 this.messageListener.onMessagePacketReceived(account, packet);
1093 }
1094
1095 private void processPresence(final Tag currentTag) throws IOException {
1096 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
1097 if (!packet.valid()) {
1098 Log.e(
1099 Config.LOGTAG,
1100 "encountered invalid presence from='"
1101 + packet.getFrom()
1102 + "' to='"
1103 + packet.getTo()
1104 + "'");
1105 return;
1106 }
1107 this.presenceListener.onPresencePacketReceived(account, packet);
1108 }
1109
1110 private void sendStartTLS() throws IOException {
1111 final Tag startTLS = Tag.empty("starttls");
1112 startTLS.setAttribute("xmlns", Namespace.TLS);
1113 tagWriter.writeTag(startTLS);
1114 }
1115
1116 private void switchOverToTls() throws XmlPullParserException, IOException {
1117 tagReader.readTag();
1118 final Socket socket = this.socket;
1119 final SSLSocket sslSocket = upgradeSocketToTls(socket);
1120 tagReader.setInputStream(sslSocket.getInputStream());
1121 tagWriter.setOutputStream(sslSocket.getOutputStream());
1122 sendStartStream();
1123 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
1124 features.encryptionEnabled = true;
1125 final Tag tag = tagReader.readTag();
1126 if (tag != null && tag.isStart("stream")) {
1127 SSLSocketHelper.log(account, sslSocket);
1128 processStream();
1129 } else {
1130 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
1131 }
1132 sslSocket.close();
1133 }
1134
1135 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
1136 final SSLSocketFactory sslSocketFactory;
1137 try {
1138 sslSocketFactory = getSSLSocketFactory();
1139 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
1140 throw new StateChangingException(Account.State.TLS_ERROR);
1141 }
1142 final InetAddress address = socket.getInetAddress();
1143 final SSLSocket sslSocket =
1144 (SSLSocket)
1145 sslSocketFactory.createSocket(
1146 socket, address.getHostAddress(), socket.getPort(), true);
1147 SSLSocketHelper.setSecurity(sslSocket);
1148 SSLSocketHelper.setHostname(sslSocket, IDN.toASCII(account.getServer()));
1149 SSLSocketHelper.setApplicationProtocol(sslSocket, "xmpp-client");
1150 final XmppDomainVerifier xmppDomainVerifier = new XmppDomainVerifier();
1151 try {
1152 if (!xmppDomainVerifier.verify(
1153 account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
1154 Log.d(
1155 Config.LOGTAG,
1156 account.getJid().asBareJid()
1157 + ": TLS certificate domain verification failed");
1158 FileBackend.close(sslSocket);
1159 throw new StateChangingException(Account.State.TLS_ERROR_DOMAIN);
1160 }
1161 } catch (final SSLPeerUnverifiedException e) {
1162 FileBackend.close(sslSocket);
1163 throw new StateChangingException(Account.State.TLS_ERROR);
1164 }
1165 return sslSocket;
1166 }
1167
1168 private void processStreamFeatures(final Tag currentTag) throws IOException {
1169 this.streamFeatures = tagReader.readElement(currentTag);
1170 final boolean isSecure =
1171 features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
1172 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
1173 if (this.streamFeatures.hasChild("starttls", Namespace.TLS)
1174 && !features.encryptionEnabled) {
1175 sendStartTLS();
1176 } else if (this.streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1177 && account.isOptionSet(Account.OPTION_REGISTER)) {
1178 if (isSecure) {
1179 register();
1180 } else {
1181 Log.d(
1182 Config.LOGTAG,
1183 account.getJid().asBareJid()
1184 + ": unable to find STARTTLS for registration process "
1185 + XmlHelper.printElementNames(this.streamFeatures));
1186 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1187 }
1188 } else if (!this.streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1189 && account.isOptionSet(Account.OPTION_REGISTER)) {
1190 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
1191 } else if (Config.SASL_2_ENABLED
1192 && this.streamFeatures.hasChild("authentication", Namespace.SASL_2)
1193 && shouldAuthenticate
1194 && isSecure) {
1195 authenticate(SaslMechanism.Version.SASL_2);
1196 } else if (this.streamFeatures.hasChild("mechanisms", Namespace.SASL)
1197 && shouldAuthenticate
1198 && isSecure) {
1199 authenticate(SaslMechanism.Version.SASL);
1200 } else if (this.streamFeatures.hasChild("sm", Namespace.STREAM_MANAGEMENT)
1201 && streamId != null
1202 && !inSmacksSession) {
1203 if (Config.EXTENDED_SM_LOGGING) {
1204 Log.d(
1205 Config.LOGTAG,
1206 account.getJid().asBareJid()
1207 + ": resuming after stanza #"
1208 + stanzasReceived);
1209 }
1210 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived);
1211 this.mSmCatchupMessageCounter.set(0);
1212 this.mWaitingForSmCatchup.set(true);
1213 this.tagWriter.writeStanzaAsync(resume);
1214 } else if (needsBinding) {
1215 if (this.streamFeatures.hasChild("bind", Namespace.BIND) && isSecure) {
1216 sendBindRequest();
1217 } else {
1218 Log.d(
1219 Config.LOGTAG,
1220 account.getJid().asBareJid()
1221 + ": unable to find bind feature "
1222 + XmlHelper.printElementNames(this.streamFeatures));
1223 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1224 }
1225 } else {
1226 Log.d(
1227 Config.LOGTAG,
1228 account.getJid().asBareJid()
1229 + ": received NOP stream features "
1230 + XmlHelper.printElementNames(this.streamFeatures));
1231 }
1232 }
1233
1234 private void authenticate(final SaslMechanism.Version version) throws IOException {
1235 final Element authElement;
1236 if (version == SaslMechanism.Version.SASL) {
1237 authElement = this.streamFeatures.findChild("mechanisms", Namespace.SASL);
1238 } else {
1239 authElement = this.streamFeatures.findChild("authentication", Namespace.SASL_2);
1240 }
1241 final Collection<String> mechanisms =
1242 Collections2.transform(
1243 Collections2.filter(
1244 authElement.getChildren(),
1245 c -> c != null && "mechanism".equals(c.getName())),
1246 c -> c == null ? null : c.getContent());
1247 final Element cbElement =
1248 this.streamFeatures.findChild("sasl-channel-binding", Namespace.CHANNEL_BINDING);
1249 final Collection<ChannelBinding> channelBindings =
1250 Collections2.filter(
1251 Collections2.transform(
1252 Collections2.filter(
1253 cbElement == null
1254 ? Collections.emptyList()
1255 : cbElement.getChildren(),
1256 c -> c != null && "channel-binding".equals(c.getName())),
1257 c -> c == null ? null : ChannelBinding.of(c.getAttribute("type"))),
1258 Predicates.notNull());
1259 Log.d(Config.LOGTAG,"mechanisms: "+mechanisms);
1260 Log.d(Config.LOGTAG, "channel bindings: " + channelBindings);
1261 final SaslMechanism.Factory factory = new SaslMechanism.Factory(account);
1262 this.saslMechanism = factory.of(mechanisms, channelBindings);
1263
1264 if (saslMechanism == null) {
1265 Log.d(
1266 Config.LOGTAG,
1267 account.getJid().asBareJid()
1268 + ": unable to find supported SASL mechanism in "
1269 + mechanisms);
1270 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1271 }
1272 final int pinnedMechanism = account.getPinnedMechanismPriority();
1273 if (pinnedMechanism > saslMechanism.getPriority()) {
1274 Log.e(
1275 Config.LOGTAG,
1276 "Auth failed. Authentication mechanism "
1277 + saslMechanism.getMechanism()
1278 + " has lower priority ("
1279 + saslMechanism.getPriority()
1280 + ") than pinned priority ("
1281 + pinnedMechanism
1282 + "). Possible downgrade attack?");
1283 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
1284 }
1285 final String firstMessage = saslMechanism.getClientFirstMessage();
1286 final Element authenticate;
1287 if (version == SaslMechanism.Version.SASL) {
1288 authenticate = new Element("auth", Namespace.SASL);
1289 if (!Strings.isNullOrEmpty(firstMessage)) {
1290 authenticate.setContent(firstMessage);
1291 }
1292 } else if (version == SaslMechanism.Version.SASL_2) {
1293 authenticate = new Element("authenticate", Namespace.SASL_2);
1294 if (!Strings.isNullOrEmpty(firstMessage)) {
1295 authenticate.addChild("initial-response").setContent(firstMessage);
1296 }
1297 final Element userAgent = authenticate.addChild("user-agent");
1298 userAgent.setAttribute("id", account.getUuid());
1299 userAgent
1300 .addChild("software")
1301 .setContent(mXmppConnectionService.getString(R.string.app_name));
1302 if (!PhoneHelper.isEmulator()) {
1303 userAgent
1304 .addChild("device")
1305 .setContent(String.format("%s %s", Build.MANUFACTURER, Build.MODEL));
1306 }
1307 final Element inline = authElement.findChild("inline", Namespace.SASL_2);
1308 final boolean inlineStreamManagement =
1309 inline != null && inline.hasChild("sm", "urn:xmpp:sm:3");
1310 final Element inlineBind2 =
1311 inline != null ? inline.findChild("bind", Namespace.BIND2) : null;
1312 final Element inlineBind2Inline =
1313 inlineBind2 != null ? inlineBind2.findChild("inline", Namespace.BIND2) : null;
1314 if (inlineBind2 != null) {
1315 final Element bind =
1316 generateBindRequest(
1317 inlineBind2Inline == null
1318 ? Collections.emptyList()
1319 : Collections2.transform(
1320 inlineBind2Inline.getChildren(),
1321 c -> c == null ? null : c.getAttribute("var")));
1322 authenticate.addChild(bind);
1323 }
1324 if (inlineStreamManagement && streamId != null) {
1325 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived);
1326 this.mSmCatchupMessageCounter.set(0);
1327 this.mWaitingForSmCatchup.set(true);
1328 authenticate.addChild(resume);
1329 }
1330 } else {
1331 throw new AssertionError("Missing implementation for " + version);
1332 }
1333
1334 Log.d(
1335 Config.LOGTAG,
1336 account.getJid().toString()
1337 + ": Authenticating with "
1338 + version
1339 + "/"
1340 + saslMechanism.getMechanism());
1341 authenticate.setAttribute("mechanism", saslMechanism.getMechanism());
1342 tagWriter.writeElement(authenticate);
1343 }
1344
1345 private Element generateBindRequest(final Collection<String> bindFeatures) {
1346 Log.d(Config.LOGTAG, "inline bind features: " + bindFeatures);
1347 final Element bind = new Element("bind", Namespace.BIND2);
1348 bind.addChild("tag").setContent(mXmppConnectionService.getString(R.string.app_name));
1349 final Element features = bind.addChild("features");
1350 if (bindFeatures.contains(Namespace.CARBONS)) {
1351 features.addChild("enable", Namespace.CARBONS);
1352 }
1353 if (bindFeatures.contains(Namespace.STREAM_MANAGEMENT)) {
1354 features.addChild(new EnablePacket());
1355 }
1356 return bind;
1357 }
1358
1359 private void register() {
1360 final String preAuth = account.getKey(Account.KEY_PRE_AUTH_REGISTRATION_TOKEN);
1361 if (preAuth != null && features.invite()) {
1362 final IqPacket preAuthRequest = new IqPacket(IqPacket.TYPE.SET);
1363 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
1364 sendUnmodifiedIqPacket(
1365 preAuthRequest,
1366 (account, response) -> {
1367 if (response.getType() == IqPacket.TYPE.RESULT) {
1368 sendRegistryRequest();
1369 } else {
1370 final String error = response.getErrorCondition();
1371 Log.d(
1372 Config.LOGTAG,
1373 account.getJid().asBareJid()
1374 + ": failed to pre auth. "
1375 + error);
1376 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
1377 }
1378 },
1379 true);
1380 } else {
1381 sendRegistryRequest();
1382 }
1383 }
1384
1385 private void sendRegistryRequest() {
1386 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
1387 register.query(Namespace.REGISTER);
1388 register.setTo(account.getDomain());
1389 sendUnmodifiedIqPacket(
1390 register,
1391 (account, packet) -> {
1392 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1393 return;
1394 }
1395 if (packet.getType() == IqPacket.TYPE.ERROR) {
1396 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1397 }
1398 final Element query = packet.query(Namespace.REGISTER);
1399 if (query.hasChild("username") && (query.hasChild("password"))) {
1400 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
1401 final Element username =
1402 new Element("username").setContent(account.getUsername());
1403 final Element password =
1404 new Element("password").setContent(account.getPassword());
1405 register1.query(Namespace.REGISTER).addChild(username);
1406 register1.query().addChild(password);
1407 register1.setFrom(account.getJid().asBareJid());
1408 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
1409 } else if (query.hasChild("x", Namespace.DATA)) {
1410 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
1411 final Element blob = query.findChild("data", "urn:xmpp:bob");
1412 final String id = packet.getId();
1413 InputStream is;
1414 if (blob != null) {
1415 try {
1416 final String base64Blob = blob.getContent();
1417 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
1418 is = new ByteArrayInputStream(strBlob);
1419 } catch (Exception e) {
1420 is = null;
1421 }
1422 } else {
1423 final boolean useTor =
1424 mXmppConnectionService.useTorToConnect() || account.isOnion();
1425 try {
1426 final String url = data.getValue("url");
1427 final String fallbackUrl = data.getValue("captcha-fallback-url");
1428 if (url != null) {
1429 is = HttpConnectionManager.open(url, useTor);
1430 } else if (fallbackUrl != null) {
1431 is = HttpConnectionManager.open(fallbackUrl, useTor);
1432 } else {
1433 is = null;
1434 }
1435 } catch (final IOException e) {
1436 Log.d(
1437 Config.LOGTAG,
1438 account.getJid().asBareJid() + ": unable to fetch captcha",
1439 e);
1440 is = null;
1441 }
1442 }
1443
1444 if (is != null) {
1445 Bitmap captcha = BitmapFactory.decodeStream(is);
1446 try {
1447 if (mXmppConnectionService.displayCaptchaRequest(
1448 account, id, data, captcha)) {
1449 return;
1450 }
1451 } catch (Exception e) {
1452 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1453 }
1454 }
1455 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1456 } else if (query.hasChild("instructions")
1457 || query.hasChild("x", Namespace.OOB)) {
1458 final String instructions = query.findChildContent("instructions");
1459 final Element oob = query.findChild("x", Namespace.OOB);
1460 final String url = oob == null ? null : oob.findChildContent("url");
1461 if (url != null) {
1462 setAccountCreationFailed(url);
1463 } else if (instructions != null) {
1464 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
1465 if (matcher.find()) {
1466 setAccountCreationFailed(
1467 instructions.substring(matcher.start(), matcher.end()));
1468 }
1469 }
1470 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1471 }
1472 },
1473 true);
1474 }
1475
1476 private void setAccountCreationFailed(final String url) {
1477 final HttpUrl httpUrl = url == null ? null : HttpUrl.parse(url);
1478 if (httpUrl != null && httpUrl.isHttps()) {
1479 this.redirectionUrl = httpUrl;
1480 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1481 }
1482 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1483 }
1484
1485 public HttpUrl getRedirectionUrl() {
1486 return this.redirectionUrl;
1487 }
1488
1489 public void resetEverything() {
1490 resetAttemptCount(true);
1491 resetStreamId();
1492 clearIqCallbacks();
1493 this.stanzasSent = 0;
1494 mStanzaQueue.clear();
1495 this.redirectionUrl = null;
1496 synchronized (this.disco) {
1497 disco.clear();
1498 }
1499 synchronized (this.commands) {
1500 this.commands.clear();
1501 }
1502 }
1503
1504 private void sendBindRequest() {
1505 try {
1506 mXmppConnectionService.restoredFromDatabaseLatch.await();
1507 } catch (InterruptedException e) {
1508 Log.d(
1509 Config.LOGTAG,
1510 account.getJid().asBareJid()
1511 + ": interrupted while waiting for DB restore during bind");
1512 return;
1513 }
1514 clearIqCallbacks();
1515 if (account.getJid().isBareJid()) {
1516 account.setResource(this.createNewResource());
1517 } else {
1518 fixResource(mXmppConnectionService, account);
1519 }
1520 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1521 final String resource =
1522 Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1523 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1524 this.sendUnmodifiedIqPacket(
1525 iq,
1526 (account, packet) -> {
1527 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1528 return;
1529 }
1530 final Element bind = packet.findChild("bind");
1531 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1532 isBound = true;
1533 final Element jid = bind.findChild("jid");
1534 if (jid != null && jid.getContent() != null) {
1535 try {
1536 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1537 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1538 Log.d(
1539 Config.LOGTAG,
1540 account.getJid().asBareJid()
1541 + ": server tried to re-assign domain to "
1542 + assignedJid.getDomain());
1543 throw new StateChangingError(Account.State.BIND_FAILURE);
1544 }
1545 if (account.setJid(assignedJid)) {
1546 Log.d(
1547 Config.LOGTAG,
1548 account.getJid().asBareJid()
1549 + ": jid changed during bind. updating database");
1550 mXmppConnectionService.databaseBackend.updateAccount(account);
1551 }
1552 if (streamFeatures.hasChild("session")
1553 && !streamFeatures
1554 .findChild("session")
1555 .hasChild("optional")) {
1556 sendStartSession();
1557 } else {
1558 final boolean waitForDisco = enableStreamManagement();
1559 sendPostBindInitialization(waitForDisco, false);
1560 }
1561 return;
1562 } catch (final IllegalArgumentException e) {
1563 Log.d(
1564 Config.LOGTAG,
1565 account.getJid().asBareJid()
1566 + ": server reported invalid jid ("
1567 + jid.getContent()
1568 + ") on bind");
1569 }
1570 } else {
1571 Log.d(
1572 Config.LOGTAG,
1573 account.getJid()
1574 + ": disconnecting because of bind failure. (no jid)");
1575 }
1576 } else {
1577 Log.d(
1578 Config.LOGTAG,
1579 account.getJid()
1580 + ": disconnecting because of bind failure ("
1581 + packet);
1582 }
1583 final Element error = packet.findChild("error");
1584 if (packet.getType() == IqPacket.TYPE.ERROR
1585 && error != null
1586 && error.hasChild("conflict")) {
1587 account.setResource(createNewResource());
1588 }
1589 throw new StateChangingError(Account.State.BIND_FAILURE);
1590 },
1591 true);
1592 }
1593
1594 private void clearIqCallbacks() {
1595 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1596 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1597 synchronized (this.packetCallbacks) {
1598 if (this.packetCallbacks.size() == 0) {
1599 return;
1600 }
1601 Log.d(
1602 Config.LOGTAG,
1603 account.getJid().asBareJid()
1604 + ": clearing "
1605 + this.packetCallbacks.size()
1606 + " iq callbacks");
1607 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator =
1608 this.packetCallbacks.values().iterator();
1609 while (iterator.hasNext()) {
1610 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1611 callbacks.add(entry.second);
1612 iterator.remove();
1613 }
1614 }
1615 for (OnIqPacketReceived callback : callbacks) {
1616 try {
1617 callback.onIqPacketReceived(account, failurePacket);
1618 } catch (StateChangingError error) {
1619 Log.d(
1620 Config.LOGTAG,
1621 account.getJid().asBareJid()
1622 + ": caught StateChangingError("
1623 + error.state.toString()
1624 + ") while clearing callbacks");
1625 // ignore
1626 }
1627 }
1628 Log.d(
1629 Config.LOGTAG,
1630 account.getJid().asBareJid()
1631 + ": done clearing iq callbacks. "
1632 + this.packetCallbacks.size()
1633 + " left");
1634 }
1635
1636 public void sendDiscoTimeout() {
1637 if (mWaitForDisco.compareAndSet(true, false)) {
1638 Log.d(
1639 Config.LOGTAG,
1640 account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1641 finalizeBind();
1642 }
1643 }
1644
1645 private void sendStartSession() {
1646 Log.d(
1647 Config.LOGTAG,
1648 account.getJid().asBareJid() + ": sending legacy session to outdated server");
1649 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1650 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1651 this.sendUnmodifiedIqPacket(
1652 startSession,
1653 (account, packet) -> {
1654 if (packet.getType() == IqPacket.TYPE.RESULT) {
1655 final boolean waitForDisco = enableStreamManagement();
1656 sendPostBindInitialization(waitForDisco, false);
1657 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1658 throw new StateChangingError(Account.State.SESSION_FAILURE);
1659 }
1660 },
1661 true);
1662 }
1663
1664 private boolean enableStreamManagement() {
1665 final boolean streamManagement =
1666 this.streamFeatures.hasChild("sm", Namespace.STREAM_MANAGEMENT);
1667 if (streamManagement) {
1668 synchronized (this.mStanzaQueue) {
1669 final EnablePacket enable = new EnablePacket();
1670 tagWriter.writeStanzaAsync(enable);
1671 stanzasSent = 0;
1672 mStanzaQueue.clear();
1673 }
1674 return true;
1675 } else {
1676 return false;
1677 }
1678 }
1679
1680 private void sendPostBindInitialization(
1681 final boolean waitForDisco, final boolean carbonsEnabled) {
1682 features.carbonsEnabled = carbonsEnabled;
1683 features.blockListRequested = false;
1684 synchronized (this.disco) {
1685 this.disco.clear();
1686 }
1687 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1688 mPendingServiceDiscoveries.set(0);
1689 if (!waitForDisco
1690 || Patches.DISCO_EXCEPTIONS.contains(
1691 account.getJid().getDomain().toEscapedString())) {
1692 Log.d(
1693 Config.LOGTAG,
1694 account.getJid().asBareJid() + ": do not wait for service discovery");
1695 mWaitForDisco.set(false);
1696 } else {
1697 mWaitForDisco.set(true);
1698 }
1699 lastDiscoStarted = SystemClock.elapsedRealtime();
1700 mXmppConnectionService.scheduleWakeUpCall(
1701 Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1702 Element caps = streamFeatures.findChild("c");
1703 final String hash = caps == null ? null : caps.getAttribute("hash");
1704 final String ver = caps == null ? null : caps.getAttribute("ver");
1705 ServiceDiscoveryResult discoveryResult = null;
1706 if (hash != null && ver != null) {
1707 discoveryResult =
1708 mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1709 }
1710 final boolean requestDiscoItemsFirst =
1711 !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1712 if (requestDiscoItemsFirst) {
1713 sendServiceDiscoveryItems(account.getDomain());
1714 }
1715 if (discoveryResult == null) {
1716 sendServiceDiscoveryInfo(account.getDomain());
1717 } else {
1718 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1719 disco.put(account.getDomain(), discoveryResult);
1720 }
1721 discoverMamPreferences();
1722 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1723 if (!requestDiscoItemsFirst) {
1724 sendServiceDiscoveryItems(account.getDomain());
1725 }
1726
1727 if (!mWaitForDisco.get()) {
1728 finalizeBind();
1729 }
1730 this.lastSessionStarted = SystemClock.elapsedRealtime();
1731 }
1732
1733 private void sendServiceDiscoveryInfo(final Jid jid) {
1734 mPendingServiceDiscoveries.incrementAndGet();
1735 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1736 iq.setTo(jid);
1737 iq.query("http://jabber.org/protocol/disco#info");
1738 this.sendIqPacket(
1739 iq,
1740 (account, packet) -> {
1741 if (packet.getType() == IqPacket.TYPE.RESULT) {
1742 boolean advancedStreamFeaturesLoaded;
1743 synchronized (XmppConnection.this.disco) {
1744 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1745 if (jid.equals(account.getDomain())) {
1746 mXmppConnectionService.databaseBackend.insertDiscoveryResult(
1747 result);
1748 }
1749 disco.put(jid, result);
1750 advancedStreamFeaturesLoaded =
1751 disco.containsKey(account.getDomain())
1752 && disco.containsKey(account.getJid().asBareJid());
1753 }
1754 if (advancedStreamFeaturesLoaded
1755 && (jid.equals(account.getDomain())
1756 || jid.equals(account.getJid().asBareJid()))) {
1757 enableAdvancedStreamFeatures();
1758 }
1759 } else if (packet.getType() == IqPacket.TYPE.ERROR) {
1760 Log.d(
1761 Config.LOGTAG,
1762 account.getJid().asBareJid()
1763 + ": could not query disco info for "
1764 + jid.toString());
1765 final boolean serverOrAccount =
1766 jid.equals(account.getDomain())
1767 || jid.equals(account.getJid().asBareJid());
1768 final boolean advancedStreamFeaturesLoaded;
1769 if (serverOrAccount) {
1770 synchronized (XmppConnection.this.disco) {
1771 disco.put(jid, ServiceDiscoveryResult.empty());
1772 advancedStreamFeaturesLoaded =
1773 disco.containsKey(account.getDomain())
1774 && disco.containsKey(account.getJid().asBareJid());
1775 }
1776 } else {
1777 advancedStreamFeaturesLoaded = false;
1778 }
1779 if (advancedStreamFeaturesLoaded) {
1780 enableAdvancedStreamFeatures();
1781 }
1782 }
1783 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1784 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1785 && mWaitForDisco.compareAndSet(true, false)) {
1786 finalizeBind();
1787 }
1788 }
1789 });
1790 }
1791
1792 private void discoverMamPreferences() {
1793 IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1794 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1795 sendIqPacket(
1796 request,
1797 (account, response) -> {
1798 if (response.getType() == IqPacket.TYPE.RESULT) {
1799 Element prefs =
1800 response.findChild(
1801 "prefs", MessageArchiveService.Version.MAM_2.namespace);
1802 isMamPreferenceAlways =
1803 "always"
1804 .equals(
1805 prefs == null
1806 ? null
1807 : prefs.getAttribute("default"));
1808 }
1809 });
1810 }
1811
1812 private void discoverCommands() {
1813 final IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1814 request.setTo(account.getDomain());
1815 request.addChild("query", Namespace.DISCO_ITEMS).setAttribute("node", Namespace.COMMANDS);
1816 sendIqPacket(
1817 request,
1818 (account, response) -> {
1819 if (response.getType() == IqPacket.TYPE.RESULT) {
1820 final Element query = response.findChild("query", Namespace.DISCO_ITEMS);
1821 if (query == null) {
1822 return;
1823 }
1824 final HashMap<String, Jid> commands = new HashMap<>();
1825 for (final Element child : query.getChildren()) {
1826 if ("item".equals(child.getName())) {
1827 final String node = child.getAttribute("node");
1828 final Jid jid = child.getAttributeAsJid("jid");
1829 if (node != null && jid != null) {
1830 commands.put(node, jid);
1831 }
1832 }
1833 }
1834 Log.d(Config.LOGTAG, commands.toString());
1835 synchronized (this.commands) {
1836 this.commands.clear();
1837 this.commands.putAll(commands);
1838 }
1839 }
1840 });
1841 }
1842
1843 public boolean isMamPreferenceAlways() {
1844 return isMamPreferenceAlways;
1845 }
1846
1847 private void finalizeBind() {
1848 Log.d(
1849 Config.LOGTAG,
1850 account.getJid().asBareJid() + ": online with resource " + account.getResource());
1851 if (bindListener != null) {
1852 bindListener.onBind(account);
1853 }
1854 changeStatus(Account.State.ONLINE);
1855 }
1856
1857 private void enableAdvancedStreamFeatures() {
1858 if (getFeatures().blocking() && !features.blockListRequested) {
1859 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
1860 this.sendIqPacket(
1861 getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1862 }
1863 for (final OnAdvancedStreamFeaturesLoaded listener :
1864 advancedStreamFeaturesLoadedListeners) {
1865 listener.onAdvancedStreamFeaturesAvailable(account);
1866 }
1867 if (getFeatures().carbons() && !features.carbonsEnabled) {
1868 sendEnableCarbons();
1869 }
1870 if (getFeatures().commands()) {
1871 discoverCommands();
1872 }
1873 }
1874
1875 private void sendServiceDiscoveryItems(final Jid server) {
1876 mPendingServiceDiscoveries.incrementAndGet();
1877 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1878 iq.setTo(server.getDomain());
1879 iq.query("http://jabber.org/protocol/disco#items");
1880 this.sendIqPacket(
1881 iq,
1882 (account, packet) -> {
1883 if (packet.getType() == IqPacket.TYPE.RESULT) {
1884 final HashSet<Jid> items = new HashSet<>();
1885 final List<Element> elements = packet.query().getChildren();
1886 for (final Element element : elements) {
1887 if (element.getName().equals("item")) {
1888 final Jid jid =
1889 InvalidJid.getNullForInvalid(
1890 element.getAttributeAsJid("jid"));
1891 if (jid != null && !jid.equals(account.getDomain())) {
1892 items.add(jid);
1893 }
1894 }
1895 }
1896 for (Jid jid : items) {
1897 sendServiceDiscoveryInfo(jid);
1898 }
1899 } else {
1900 Log.d(
1901 Config.LOGTAG,
1902 account.getJid().asBareJid()
1903 + ": could not query disco items of "
1904 + server);
1905 }
1906 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1907 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1908 && mWaitForDisco.compareAndSet(true, false)) {
1909 finalizeBind();
1910 }
1911 }
1912 });
1913 }
1914
1915 private void sendEnableCarbons() {
1916 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1917 iq.addChild("enable", Namespace.CARBONS);
1918 this.sendIqPacket(
1919 iq,
1920 (account, packet) -> {
1921 if (packet.getType() == IqPacket.TYPE.RESULT) {
1922 Log.d(
1923 Config.LOGTAG,
1924 account.getJid().asBareJid() + ": successfully enabled carbons");
1925 features.carbonsEnabled = true;
1926 } else {
1927 Log.d(
1928 Config.LOGTAG,
1929 account.getJid().asBareJid()
1930 + ": could not enable carbons "
1931 + packet);
1932 }
1933 });
1934 }
1935
1936 private void processStreamError(final Tag currentTag) throws IOException {
1937 final Element streamError = tagReader.readElement(currentTag);
1938 if (streamError == null) {
1939 return;
1940 }
1941 if (streamError.hasChild("conflict")) {
1942 account.setResource(createNewResource());
1943 Log.d(
1944 Config.LOGTAG,
1945 account.getJid().asBareJid()
1946 + ": switching resource due to conflict ("
1947 + account.getResource()
1948 + ")");
1949 throw new IOException();
1950 } else if (streamError.hasChild("host-unknown")) {
1951 throw new StateChangingException(Account.State.HOST_UNKNOWN);
1952 } else if (streamError.hasChild("policy-violation")) {
1953 this.lastConnect = SystemClock.elapsedRealtime();
1954 final String text = streamError.findChildContent("text");
1955 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": policy violation. " + text);
1956 failPendingMessages(text);
1957 throw new StateChangingException(Account.State.POLICY_VIOLATION);
1958 } else {
1959 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError);
1960 throw new StateChangingException(Account.State.STREAM_ERROR);
1961 }
1962 }
1963
1964 private void failPendingMessages(final String error) {
1965 synchronized (this.mStanzaQueue) {
1966 for (int i = 0; i < mStanzaQueue.size(); ++i) {
1967 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
1968 if (stanza instanceof MessagePacket) {
1969 final MessagePacket packet = (MessagePacket) stanza;
1970 final String id = packet.getId();
1971 final Jid to = packet.getTo();
1972 mXmppConnectionService.markMessage(
1973 account, to.asBareJid(), id, Message.STATUS_SEND_FAILED, error);
1974 }
1975 }
1976 }
1977 }
1978
1979 private void sendStartStream() throws IOException {
1980 final Tag stream = Tag.start("stream:stream");
1981 stream.setAttribute("to", account.getServer());
1982 stream.setAttribute("version", "1.0");
1983 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
1984 stream.setAttribute("xmlns", "jabber:client");
1985 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1986 tagWriter.writeTag(stream);
1987 }
1988
1989 private String createNewResource() {
1990 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
1991 }
1992
1993 private String nextRandomId() {
1994 return nextRandomId(false);
1995 }
1996
1997 private String nextRandomId(final boolean s) {
1998 return CryptoHelper.random(s ? 3 : 9);
1999 }
2000
2001 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
2002 packet.setFrom(account.getJid());
2003 return this.sendUnmodifiedIqPacket(packet, callback, false);
2004 }
2005
2006 public synchronized String sendUnmodifiedIqPacket(
2007 final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
2008 if (packet.getId() == null) {
2009 packet.setAttribute("id", nextRandomId());
2010 }
2011 if (callback != null) {
2012 synchronized (this.packetCallbacks) {
2013 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
2014 }
2015 }
2016 this.sendPacket(packet, force);
2017 return packet.getId();
2018 }
2019
2020 public void sendMessagePacket(final MessagePacket packet) {
2021 this.sendPacket(packet);
2022 }
2023
2024 public void sendPresencePacket(final PresencePacket packet) {
2025 this.sendPacket(packet);
2026 }
2027
2028 private synchronized void sendPacket(final AbstractStanza packet) {
2029 sendPacket(packet, false);
2030 }
2031
2032 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
2033 if (stanzasSent == Integer.MAX_VALUE) {
2034 resetStreamId();
2035 disconnect(true);
2036 return;
2037 }
2038 synchronized (this.mStanzaQueue) {
2039 if (force || isBound) {
2040 tagWriter.writeStanzaAsync(packet);
2041 } else {
2042 Log.d(
2043 Config.LOGTAG,
2044 account.getJid().asBareJid()
2045 + " do not write stanza to unbound stream "
2046 + packet.toString());
2047 }
2048 if (packet instanceof AbstractAcknowledgeableStanza) {
2049 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
2050
2051 if (this.mStanzaQueue.size() != 0) {
2052 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
2053 if (currentHighestKey != stanzasSent) {
2054 throw new AssertionError("Stanza count messed up");
2055 }
2056 }
2057
2058 ++stanzasSent;
2059 this.mStanzaQueue.append(stanzasSent, stanza);
2060 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
2061 if (Config.EXTENDED_SM_LOGGING) {
2062 Log.d(
2063 Config.LOGTAG,
2064 account.getJid().asBareJid()
2065 + ": requesting ack for message stanza #"
2066 + stanzasSent);
2067 }
2068 tagWriter.writeStanzaAsync(new RequestPacket());
2069 }
2070 }
2071 }
2072 }
2073
2074 public void sendPing() {
2075 if (!r()) {
2076 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
2077 iq.setFrom(account.getJid());
2078 iq.addChild("ping", Namespace.PING);
2079 this.sendIqPacket(iq, null);
2080 }
2081 this.lastPingSent = SystemClock.elapsedRealtime();
2082 }
2083
2084 public void setOnMessagePacketReceivedListener(final OnMessagePacketReceived listener) {
2085 this.messageListener = listener;
2086 }
2087
2088 public void setOnUnregisteredIqPacketReceivedListener(final OnIqPacketReceived listener) {
2089 this.unregisteredIqListener = listener;
2090 }
2091
2092 public void setOnPresencePacketReceivedListener(final OnPresencePacketReceived listener) {
2093 this.presenceListener = listener;
2094 }
2095
2096 public void setOnJinglePacketReceivedListener(final OnJinglePacketReceived listener) {
2097 this.jingleListener = listener;
2098 }
2099
2100 public void setOnStatusChangedListener(final OnStatusChanged listener) {
2101 this.statusListener = listener;
2102 }
2103
2104 public void setOnBindListener(final OnBindListener listener) {
2105 this.bindListener = listener;
2106 }
2107
2108 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
2109 this.acknowledgedListener = listener;
2110 }
2111
2112 public void addOnAdvancedStreamFeaturesAvailableListener(
2113 final OnAdvancedStreamFeaturesLoaded listener) {
2114 this.advancedStreamFeaturesLoadedListeners.add(listener);
2115 }
2116
2117 private void forceCloseSocket() {
2118 FileBackend.close(this.socket);
2119 FileBackend.close(this.tagReader);
2120 }
2121
2122 public void interrupt() {
2123 if (this.mThread != null) {
2124 this.mThread.interrupt();
2125 }
2126 }
2127
2128 public void disconnect(final boolean force) {
2129 interrupt();
2130 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
2131 if (force) {
2132 forceCloseSocket();
2133 } else {
2134 final TagWriter currentTagWriter = this.tagWriter;
2135 if (currentTagWriter.isActive()) {
2136 currentTagWriter.finish();
2137 final Socket currentSocket = this.socket;
2138 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
2139 try {
2140 currentTagWriter.await(1, TimeUnit.SECONDS);
2141 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
2142 currentTagWriter.writeTag(Tag.end("stream:stream"));
2143 if (streamCountDownLatch != null) {
2144 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
2145 Log.d(
2146 Config.LOGTAG,
2147 account.getJid().asBareJid() + ": remote ended stream");
2148 } else {
2149 Log.d(
2150 Config.LOGTAG,
2151 account.getJid().asBareJid()
2152 + ": remote has not closed socket. force closing");
2153 }
2154 }
2155 } catch (InterruptedException e) {
2156 Log.d(
2157 Config.LOGTAG,
2158 account.getJid().asBareJid()
2159 + ": interrupted while gracefully closing stream");
2160 } catch (final IOException e) {
2161 Log.d(
2162 Config.LOGTAG,
2163 account.getJid().asBareJid()
2164 + ": io exception during disconnect ("
2165 + e.getMessage()
2166 + ")");
2167 } finally {
2168 FileBackend.close(currentSocket);
2169 }
2170 } else {
2171 forceCloseSocket();
2172 }
2173 }
2174 }
2175
2176 private void resetStreamId() {
2177 this.streamId = null;
2178 }
2179
2180 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
2181 synchronized (this.disco) {
2182 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
2183 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
2184 if (cursor.getValue().getFeatures().contains(feature)) {
2185 items.add(cursor);
2186 }
2187 }
2188 return items;
2189 }
2190 }
2191
2192 public Jid findDiscoItemByFeature(final String feature) {
2193 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
2194 if (items.size() >= 1) {
2195 return items.get(0).getKey();
2196 }
2197 return null;
2198 }
2199
2200 public boolean r() {
2201 if (getFeatures().sm()) {
2202 this.tagWriter.writeStanzaAsync(new RequestPacket());
2203 return true;
2204 } else {
2205 return false;
2206 }
2207 }
2208
2209 public List<String> getMucServersWithholdAccount() {
2210 final List<String> servers = getMucServers();
2211 servers.remove(account.getDomain().toEscapedString());
2212 return servers;
2213 }
2214
2215 public List<String> getMucServers() {
2216 List<String> servers = new ArrayList<>();
2217 synchronized (this.disco) {
2218 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
2219 final ServiceDiscoveryResult value = cursor.getValue();
2220 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
2221 && value.hasIdentity("conference", "text")
2222 && !value.getFeatures().contains("jabber:iq:gateway")
2223 && !value.hasIdentity("conference", "irc")) {
2224 servers.add(cursor.getKey().toString());
2225 }
2226 }
2227 }
2228 return servers;
2229 }
2230
2231 public String getMucServer() {
2232 List<String> servers = getMucServers();
2233 return servers.size() > 0 ? servers.get(0) : null;
2234 }
2235
2236 public int getTimeToNextAttempt() {
2237 final int additionalTime =
2238 account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
2239 final int interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
2240 final int secondsSinceLast =
2241 (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
2242 return interval - secondsSinceLast;
2243 }
2244
2245 public int getAttempt() {
2246 return this.attempt;
2247 }
2248
2249 public Features getFeatures() {
2250 return this.features;
2251 }
2252
2253 public long getLastSessionEstablished() {
2254 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
2255 return System.currentTimeMillis() - diff;
2256 }
2257
2258 public long getLastConnect() {
2259 return this.lastConnect;
2260 }
2261
2262 public long getLastPingSent() {
2263 return this.lastPingSent;
2264 }
2265
2266 public long getLastDiscoStarted() {
2267 return this.lastDiscoStarted;
2268 }
2269
2270 public long getLastPacketReceived() {
2271 return this.lastPacketReceived;
2272 }
2273
2274 public void sendActive() {
2275 this.sendPacket(new ActivePacket());
2276 }
2277
2278 public void sendInactive() {
2279 this.sendPacket(new InactivePacket());
2280 }
2281
2282 public void resetAttemptCount(boolean resetConnectTime) {
2283 this.attempt = 0;
2284 if (resetConnectTime) {
2285 this.lastConnect = 0;
2286 }
2287 }
2288
2289 public void setInteractive(boolean interactive) {
2290 this.mInteractive = interactive;
2291 }
2292
2293 public Identity getServerIdentity() {
2294 synchronized (this.disco) {
2295 ServiceDiscoveryResult result = disco.get(account.getJid().getDomain());
2296 if (result == null) {
2297 return Identity.UNKNOWN;
2298 }
2299 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
2300 if (id.getType().equals("im")
2301 && id.getCategory().equals("server")
2302 && id.getName() != null) {
2303 switch (id.getName()) {
2304 case "Prosody":
2305 return Identity.PROSODY;
2306 case "ejabberd":
2307 return Identity.EJABBERD;
2308 case "Slack-XMPP":
2309 return Identity.SLACK;
2310 }
2311 }
2312 }
2313 }
2314 return Identity.UNKNOWN;
2315 }
2316
2317 private IqGenerator getIqGenerator() {
2318 return mXmppConnectionService.getIqGenerator();
2319 }
2320
2321 public enum Identity {
2322 FACEBOOK,
2323 SLACK,
2324 EJABBERD,
2325 PROSODY,
2326 NIMBUZZ,
2327 UNKNOWN
2328 }
2329
2330 private class MyKeyManager implements X509KeyManager {
2331 @Override
2332 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
2333 return account.getPrivateKeyAlias();
2334 }
2335
2336 @Override
2337 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
2338 return null;
2339 }
2340
2341 @Override
2342 public X509Certificate[] getCertificateChain(String alias) {
2343 Log.d(Config.LOGTAG, "getting certificate chain");
2344 try {
2345 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
2346 } catch (final Exception e) {
2347 Log.d(Config.LOGTAG, "could not get certificate chain", e);
2348 return new X509Certificate[0];
2349 }
2350 }
2351
2352 @Override
2353 public String[] getClientAliases(String s, Principal[] principals) {
2354 final String alias = account.getPrivateKeyAlias();
2355 return alias != null ? new String[] {alias} : new String[0];
2356 }
2357
2358 @Override
2359 public String[] getServerAliases(String s, Principal[] principals) {
2360 return new String[0];
2361 }
2362
2363 @Override
2364 public PrivateKey getPrivateKey(String alias) {
2365 try {
2366 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
2367 } catch (Exception e) {
2368 return null;
2369 }
2370 }
2371 }
2372
2373 private static class StateChangingError extends Error {
2374 private final Account.State state;
2375
2376 public StateChangingError(Account.State state) {
2377 this.state = state;
2378 }
2379 }
2380
2381 private static class StateChangingException extends IOException {
2382 private final Account.State state;
2383
2384 public StateChangingException(Account.State state) {
2385 this.state = state;
2386 }
2387 }
2388
2389 public class Features {
2390 XmppConnection connection;
2391 private boolean carbonsEnabled = false;
2392 private boolean encryptionEnabled = false;
2393 private boolean blockListRequested = false;
2394
2395 public Features(final XmppConnection connection) {
2396 this.connection = connection;
2397 }
2398
2399 private boolean hasDiscoFeature(final Jid server, final String feature) {
2400 synchronized (XmppConnection.this.disco) {
2401 final ServiceDiscoveryResult sdr = connection.disco.get(server);
2402 return sdr != null && sdr.getFeatures().contains(feature);
2403 }
2404 }
2405
2406 public boolean carbons() {
2407 return hasDiscoFeature(account.getDomain(), Namespace.CARBONS);
2408 }
2409
2410 public boolean commands() {
2411 return hasDiscoFeature(account.getDomain(), Namespace.COMMANDS);
2412 }
2413
2414 public boolean easyOnboardingInvites() {
2415 synchronized (commands) {
2416 return commands.containsKey(Namespace.EASY_ONBOARDING_INVITE);
2417 }
2418 }
2419
2420 public boolean bookmarksConversion() {
2421 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION)
2422 && pepPublishOptions();
2423 }
2424
2425 public boolean avatarConversion() {
2426 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.AVATAR_CONVERSION)
2427 && pepPublishOptions();
2428 }
2429
2430 public boolean blocking() {
2431 return hasDiscoFeature(account.getDomain(), Namespace.BLOCKING);
2432 }
2433
2434 public boolean spamReporting() {
2435 return hasDiscoFeature(account.getDomain(), "urn:xmpp:reporting:reason:spam:0");
2436 }
2437
2438 public boolean flexibleOfflineMessageRetrieval() {
2439 return hasDiscoFeature(
2440 account.getDomain(), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
2441 }
2442
2443 public boolean register() {
2444 return hasDiscoFeature(account.getDomain(), Namespace.REGISTER);
2445 }
2446
2447 public boolean invite() {
2448 return connection.streamFeatures != null
2449 && connection.streamFeatures.hasChild("register", Namespace.INVITE);
2450 }
2451
2452 public boolean sm() {
2453 return streamId != null
2454 || (connection.streamFeatures != null
2455 && connection.streamFeatures.hasChild("sm"));
2456 }
2457
2458 public boolean csi() {
2459 return connection.streamFeatures != null
2460 && connection.streamFeatures.hasChild("csi", Namespace.CSI);
2461 }
2462
2463 public boolean pep() {
2464 synchronized (XmppConnection.this.disco) {
2465 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
2466 return info != null && info.hasIdentity("pubsub", "pep");
2467 }
2468 }
2469
2470 public boolean pepPersistent() {
2471 synchronized (XmppConnection.this.disco) {
2472 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
2473 return info != null
2474 && info.getFeatures()
2475 .contains("http://jabber.org/protocol/pubsub#persistent-items");
2476 }
2477 }
2478
2479 public boolean pepPublishOptions() {
2480 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
2481 }
2482
2483 public boolean pepOmemoWhitelisted() {
2484 return hasDiscoFeature(
2485 account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
2486 }
2487
2488 public boolean mam() {
2489 return MessageArchiveService.Version.has(getAccountFeatures());
2490 }
2491
2492 public List<String> getAccountFeatures() {
2493 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
2494 return result == null ? Collections.emptyList() : result.getFeatures();
2495 }
2496
2497 public boolean push() {
2498 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
2499 || hasDiscoFeature(account.getDomain(), Namespace.PUSH);
2500 }
2501
2502 public boolean rosterVersioning() {
2503 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
2504 }
2505
2506 public void setBlockListRequested(boolean value) {
2507 this.blockListRequested = value;
2508 }
2509
2510 public boolean httpUpload(long filesize) {
2511 if (Config.DISABLE_HTTP_UPLOAD) {
2512 return false;
2513 } else {
2514 for (String namespace :
2515 new String[] {Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
2516 List<Entry<Jid, ServiceDiscoveryResult>> items =
2517 findDiscoItemsByFeature(namespace);
2518 if (items.size() > 0) {
2519 try {
2520 long maxsize =
2521 Long.parseLong(
2522 items.get(0)
2523 .getValue()
2524 .getExtendedDiscoInformation(
2525 namespace, "max-file-size"));
2526 if (filesize <= maxsize) {
2527 return true;
2528 } else {
2529 Log.d(
2530 Config.LOGTAG,
2531 account.getJid().asBareJid()
2532 + ": http upload is not available for files with size "
2533 + filesize
2534 + " (max is "
2535 + maxsize
2536 + ")");
2537 return false;
2538 }
2539 } catch (Exception e) {
2540 return true;
2541 }
2542 }
2543 }
2544 return false;
2545 }
2546 }
2547
2548 public boolean useLegacyHttpUpload() {
2549 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null
2550 && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
2551 }
2552
2553 public long getMaxHttpUploadSize() {
2554 for (String namespace :
2555 new String[] {Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
2556 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
2557 if (items.size() > 0) {
2558 try {
2559 return Long.parseLong(
2560 items.get(0)
2561 .getValue()
2562 .getExtendedDiscoInformation(namespace, "max-file-size"));
2563 } catch (Exception e) {
2564 // ignored
2565 }
2566 }
2567 }
2568 return -1;
2569 }
2570
2571 public boolean stanzaIds() {
2572 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
2573 }
2574
2575 public boolean bookmarks2() {
2576 return Config
2577 .USE_BOOKMARKS2 /* || hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS2_COMPAT)*/;
2578 }
2579
2580 public boolean externalServiceDiscovery() {
2581 return hasDiscoFeature(account.getDomain(), Namespace.EXTERNAL_SERVICE_DISCOVERY);
2582 }
2583 }
2584}