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;
15import androidx.annotation.NonNull;
16import androidx.annotation.Nullable;
17import com.google.common.base.MoreObjects;
18import com.google.common.base.Optional;
19import com.google.common.base.Preconditions;
20import com.google.common.base.Strings;
21import com.google.common.collect.ImmutableList;
22import com.google.common.collect.Iterables;
23import eu.siacs.conversations.AppSettings;
24import eu.siacs.conversations.BuildConfig;
25import eu.siacs.conversations.Config;
26import eu.siacs.conversations.R;
27import eu.siacs.conversations.crypto.XmppDomainVerifier;
28import eu.siacs.conversations.crypto.axolotl.AxolotlService;
29import eu.siacs.conversations.crypto.sasl.ChannelBinding;
30import eu.siacs.conversations.crypto.sasl.ChannelBindingMechanism;
31import eu.siacs.conversations.crypto.sasl.HashedToken;
32import eu.siacs.conversations.crypto.sasl.SaslMechanism;
33import eu.siacs.conversations.entities.Account;
34import eu.siacs.conversations.entities.Message;
35import eu.siacs.conversations.entities.ServiceDiscoveryResult;
36import eu.siacs.conversations.generator.IqGenerator;
37import eu.siacs.conversations.http.HttpConnectionManager;
38import eu.siacs.conversations.parser.IqParser;
39import eu.siacs.conversations.parser.MessageParser;
40import eu.siacs.conversations.parser.PresenceParser;
41import eu.siacs.conversations.persistance.FileBackend;
42import eu.siacs.conversations.services.MemorizingTrustManager;
43import eu.siacs.conversations.services.MessageArchiveService;
44import eu.siacs.conversations.services.NotificationService;
45import eu.siacs.conversations.services.XmppConnectionService;
46import eu.siacs.conversations.ui.util.PendingItem;
47import eu.siacs.conversations.utils.AccountUtils;
48import eu.siacs.conversations.utils.CryptoHelper;
49import eu.siacs.conversations.utils.Patterns;
50import eu.siacs.conversations.utils.PhoneHelper;
51import eu.siacs.conversations.utils.Resolver;
52import eu.siacs.conversations.utils.SSLSockets;
53import eu.siacs.conversations.utils.SocksSocketFactory;
54import eu.siacs.conversations.utils.XmlHelper;
55import eu.siacs.conversations.xml.Element;
56import eu.siacs.conversations.xml.LocalizedContent;
57import eu.siacs.conversations.xml.Namespace;
58import eu.siacs.conversations.xml.Tag;
59import eu.siacs.conversations.xml.TagWriter;
60import eu.siacs.conversations.xml.XmlReader;
61import eu.siacs.conversations.xmpp.bind.Bind2;
62import eu.siacs.conversations.xmpp.forms.Data;
63import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
64import im.conversations.android.xmpp.model.AuthenticationFailure;
65import im.conversations.android.xmpp.model.AuthenticationRequest;
66import im.conversations.android.xmpp.model.AuthenticationStreamFeature;
67import im.conversations.android.xmpp.model.StreamElement;
68import im.conversations.android.xmpp.model.bind2.Bind;
69import im.conversations.android.xmpp.model.bind2.Bound;
70import im.conversations.android.xmpp.model.csi.Active;
71import im.conversations.android.xmpp.model.csi.Inactive;
72import im.conversations.android.xmpp.model.error.Condition;
73import im.conversations.android.xmpp.model.fast.Fast;
74import im.conversations.android.xmpp.model.fast.RequestToken;
75import im.conversations.android.xmpp.model.jingle.Jingle;
76import im.conversations.android.xmpp.model.sasl.Auth;
77import im.conversations.android.xmpp.model.sasl.Failure;
78import im.conversations.android.xmpp.model.sasl.Mechanisms;
79import im.conversations.android.xmpp.model.sasl.Response;
80import im.conversations.android.xmpp.model.sasl.SaslError;
81import im.conversations.android.xmpp.model.sasl.Success;
82import im.conversations.android.xmpp.model.sasl2.Authenticate;
83import im.conversations.android.xmpp.model.sasl2.Authentication;
84import im.conversations.android.xmpp.model.sasl2.UserAgent;
85import im.conversations.android.xmpp.model.sm.Ack;
86import im.conversations.android.xmpp.model.sm.Enable;
87import im.conversations.android.xmpp.model.sm.Enabled;
88import im.conversations.android.xmpp.model.sm.Failed;
89import im.conversations.android.xmpp.model.sm.Request;
90import im.conversations.android.xmpp.model.sm.Resume;
91import im.conversations.android.xmpp.model.sm.Resumed;
92import im.conversations.android.xmpp.model.sm.StreamManagement;
93import im.conversations.android.xmpp.model.stanza.Iq;
94import im.conversations.android.xmpp.model.stanza.Presence;
95import im.conversations.android.xmpp.model.stanza.Stanza;
96import im.conversations.android.xmpp.model.streams.StreamError;
97import im.conversations.android.xmpp.model.tls.Proceed;
98import im.conversations.android.xmpp.model.tls.StartTls;
99import im.conversations.android.xmpp.processor.BindProcessor;
100import java.io.ByteArrayInputStream;
101import java.io.IOException;
102import java.io.InputStream;
103import java.net.ConnectException;
104import java.net.IDN;
105import java.net.InetAddress;
106import java.net.InetSocketAddress;
107import java.net.Socket;
108import java.net.UnknownHostException;
109import java.security.KeyManagementException;
110import java.security.NoSuchAlgorithmException;
111import java.security.Principal;
112import java.security.PrivateKey;
113import java.security.cert.X509Certificate;
114import java.util.ArrayList;
115import java.util.Arrays;
116import java.util.Collection;
117import java.util.Collections;
118import java.util.HashMap;
119import java.util.HashSet;
120import java.util.Hashtable;
121import java.util.Iterator;
122import java.util.List;
123import java.util.Map.Entry;
124import java.util.Set;
125import java.util.concurrent.CountDownLatch;
126import java.util.concurrent.TimeUnit;
127import java.util.concurrent.atomic.AtomicBoolean;
128import java.util.concurrent.atomic.AtomicInteger;
129import java.util.function.Consumer;
130import java.util.regex.Matcher;
131import javax.net.ssl.KeyManager;
132import javax.net.ssl.SSLContext;
133import javax.net.ssl.SSLPeerUnverifiedException;
134import javax.net.ssl.SSLSocket;
135import javax.net.ssl.SSLSocketFactory;
136import javax.net.ssl.X509KeyManager;
137import javax.net.ssl.X509TrustManager;
138import okhttp3.HttpUrl;
139import org.xmlpull.v1.XmlPullParserException;
140
141public class XmppConnection implements Runnable {
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<Stanza> mStanzaQueue = new SparseArray<>();
148 private final Hashtable<String, Pair<Iq, Consumer<Iq>>> packetCallbacks = new Hashtable<>();
149 private final Set<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners =
150 new HashSet<>();
151 private final AppSettings appSettings;
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 quickStartInProgress = false;
159 private boolean isBound = false;
160 private boolean offlineMessagesRetrieved = false;
161 private im.conversations.android.xmpp.model.streams.Features streamFeatures;
162 private im.conversations.android.xmpp.model.streams.Features boundStreamFeatures;
163 private StreamId streamId = null;
164 private int stanzasReceived = 0;
165 private int stanzasSent = 0;
166 private int stanzasSentBeforeAuthentication;
167 private long lastPacketReceived = 0;
168 private long lastPingSent = 0;
169 private long lastConnect = 0;
170 private long lastSessionStarted = 0;
171 private long lastDiscoStarted = 0;
172 private boolean isMamPreferenceAlways = false;
173 private final AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
174 private final AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
175 private final AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
176 private final AtomicInteger mSmCatchupMessageCounter = new AtomicInteger(0);
177 private boolean mInteractive = false;
178 private int attempt = 0;
179 private OnJinglePacketReceived jingleListener = null;
180
181 private final Consumer<Presence> presenceListener;
182 private final Consumer<Iq> unregisteredIqListener;
183 private final Consumer<im.conversations.android.xmpp.model.stanza.Message> messageListener;
184 private OnStatusChanged statusListener = null;
185 private final Runnable bindListener;
186 private OnMessageAcknowledged acknowledgedListener = null;
187 private final PendingItem<String> pendingResumeId = new PendingItem<>();
188 private LoginInfo loginInfo;
189 private HashedToken.Mechanism hashTokenRequest;
190 private HttpUrl redirectionUrl = null;
191 private String verifiedHostname = null;
192 private Resolver.Result currentResolverResult;
193 private Resolver.Result seeOtherHostResolverResult;
194 private volatile Thread mThread;
195 private CountDownLatch mStreamCountDownLatch;
196
197 public XmppConnection(final Account account, final XmppConnectionService service) {
198 this.account = account;
199 this.mXmppConnectionService = service;
200 this.appSettings = mXmppConnectionService.getAppSettings();
201 this.presenceListener = new PresenceParser(service, account);
202 this.unregisteredIqListener = new IqParser(service, account);
203 this.messageListener = new MessageParser(service, account);
204 this.bindListener = new BindProcessor(service, account);
205 }
206
207 private static void fixResource(final Context context, final Account account) {
208 String resource = account.getResource();
209 int fixedPartLength =
210 context.getString(R.string.app_name).length() + 1; // include the trailing dot
211 int randomPartLength = 4; // 3 bytes
212 if (resource != null && resource.length() > fixedPartLength + randomPartLength) {
213 if (validBase64(
214 resource.substring(fixedPartLength, fixedPartLength + randomPartLength))) {
215 account.setResource(resource.substring(0, fixedPartLength + randomPartLength));
216 }
217 }
218 }
219
220 private static boolean validBase64(final String input) {
221 try {
222 return Base64.decode(input, Base64.URL_SAFE).length == 3;
223 } catch (final Throwable throwable) {
224 return false;
225 }
226 }
227
228 private void changeStatus(final Account.State nextStatus) {
229 synchronized (this) {
230 if (Thread.currentThread().isInterrupted()) {
231 Log.d(
232 Config.LOGTAG,
233 account.getJid().asBareJid()
234 + ": not changing status to "
235 + nextStatus
236 + " because thread was interrupted");
237 return;
238 }
239 if (account.getStatus() != nextStatus) {
240 if (nextStatus == Account.State.OFFLINE
241 && account.getStatus() != Account.State.CONNECTING
242 && account.getStatus() != Account.State.ONLINE
243 && account.getStatus() != Account.State.DISABLED
244 && account.getStatus() != Account.State.LOGGED_OUT) {
245 return;
246 }
247 if (nextStatus == Account.State.ONLINE) {
248 this.attempt = 0;
249 }
250 account.setStatus(nextStatus);
251 } else {
252 return;
253 }
254 }
255 if (statusListener != null) {
256 statusListener.onStatusChanged(account);
257 }
258 }
259
260 public Jid getJidForCommand(final String node) {
261 synchronized (this.commands) {
262 return this.commands.get(node);
263 }
264 }
265
266 public void prepareNewConnection() {
267 this.lastConnect = SystemClock.elapsedRealtime();
268 this.lastPingSent = SystemClock.elapsedRealtime();
269 this.lastDiscoStarted = Long.MAX_VALUE;
270 this.mWaitingForSmCatchup.set(false);
271 this.changeStatus(Account.State.CONNECTING);
272 }
273
274 public boolean isWaitingForSmCatchup() {
275 return mWaitingForSmCatchup.get();
276 }
277
278 public void incrementSmCatchupMessageCounter() {
279 this.mSmCatchupMessageCounter.incrementAndGet();
280 }
281
282 protected void connect() {
283 if (mXmppConnectionService.areMessagesInitialized()) {
284 mXmppConnectionService.resetSendingToWaiting(account);
285 }
286 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
287 this.pendingResumeId.clear();
288 this.loginInfo = null;
289 this.features.encryptionEnabled = false;
290 this.inSmacksSession = false;
291 this.quickStartInProgress = false;
292 this.isBound = false;
293 this.attempt++;
294 this.currentResolverResult = null;
295 // will be set if user entered hostname is being used or hostname was verified with dnssec
296 this.verifiedHostname = null;
297 try {
298 Socket localSocket;
299 shouldAuthenticate = !account.isOptionSet(Account.OPTION_REGISTER);
300 this.changeStatus(Account.State.CONNECTING);
301 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
302 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
303 // TODO collapse Tor usage into normal connection code path
304 if (useTor) {
305 final var seeOtherHost = this.seeOtherHostResolverResult;
306 final Resolver.Result resume = streamId == null ? null : streamId.location;
307 final Resolver.Result viaTor;
308 if (account.isOnion()) {
309 // for .onion JIDs we always connect to the onion address no matter what
310 viaTor =
311 Iterables.getOnlyElement(
312 Resolver.fromHardCoded(
313 account.getServer(), Resolver.XMPP_PORT_STARTTLS));
314 } else if (resume != null) {
315 viaTor = resume;
316 } else if (seeOtherHost != null) {
317 viaTor = seeOtherHost;
318 } else if (account.getHostname().isEmpty()) {
319 viaTor =
320 Iterables.getOnlyElement(
321 Resolver.fromHardCoded(
322 account.getServer(), Resolver.XMPP_PORT_STARTTLS));
323 } else {
324 viaTor =
325 Iterables.getOnlyElement(
326 Resolver.fromHardCoded(
327 account.getHostname(), account.getPort()));
328 this.verifiedHostname = account.getHostname();
329 }
330
331 Log.d(
332 Config.LOGTAG,
333 account.getJid().asBareJid()
334 + ": connect to "
335 + viaTor.asDestination()
336 + " via Tor. directTls="
337 + viaTor.isDirectTls());
338 localSocket =
339 SocksSocketFactory.createSocketOverTor(
340 viaTor.asDestination(), viaTor.getPort());
341
342 if (viaTor.isDirectTls()) {
343 localSocket = upgradeSocketToTls(localSocket);
344 features.encryptionEnabled = true;
345 }
346
347 try {
348 if (startXmpp(localSocket)) {
349 this.currentResolverResult = viaTor;
350 this.seeOtherHostResolverResult = null;
351 }
352 } catch (final InterruptedException e) {
353 Log.d(
354 Config.LOGTAG,
355 account.getJid().asBareJid()
356 + ": thread was interrupted before beginning stream");
357 return;
358 } catch (final Exception e) {
359 throw new IOException("Could not start stream", e);
360 }
361 } else {
362 final String domain = account.getServer();
363 final List<Resolver.Result> results = new ArrayList<>();
364 final boolean hardcoded = extended && !account.getHostname().isEmpty();
365 if (hardcoded) {
366 results.addAll(
367 Resolver.fromHardCoded(account.getHostname(), account.getPort()));
368 } else {
369 results.addAll(Resolver.resolve(domain));
370 }
371 if (Thread.currentThread().isInterrupted()) {
372 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
373 return;
374 }
375 if (results.isEmpty()) {
376 Log.e(
377 Config.LOGTAG,
378 account.getJid().asBareJid() + ": Resolver results were empty");
379 return;
380 }
381 final Resolver.Result storedBackupResult;
382 if (hardcoded) {
383 storedBackupResult = null;
384 } else {
385 storedBackupResult =
386 mXmppConnectionService.databaseBackend.findResolverResult(domain);
387 if (storedBackupResult != null && !results.contains(storedBackupResult)) {
388 results.add(storedBackupResult);
389 Log.d(
390 Config.LOGTAG,
391 account.getJid().asBareJid()
392 + ": loaded backup resolver result from db: "
393 + storedBackupResult);
394 }
395 }
396 final StreamId streamId = this.streamId;
397 final Resolver.Result resumeLocation = streamId == null ? null : streamId.location;
398 if (resumeLocation != null) {
399 Log.d(
400 Config.LOGTAG,
401 account.getJid().asBareJid()
402 + ": injected resume location on position 0");
403 results.add(0, resumeLocation);
404 }
405 final Resolver.Result seeOtherHost = this.seeOtherHostResolverResult;
406 if (seeOtherHost != null) {
407 Log.d(
408 Config.LOGTAG,
409 account.getJid().asBareJid()
410 + ": injected see-other-host on position 0");
411 results.add(0, seeOtherHost);
412 }
413 for (final Iterator<Resolver.Result> iterator = results.iterator();
414 iterator.hasNext(); ) {
415 final Resolver.Result result = iterator.next();
416 if (Thread.currentThread().isInterrupted()) {
417 Log.d(
418 Config.LOGTAG,
419 account.getJid().asBareJid() + ": Thread was interrupted");
420 return;
421 }
422 try {
423 // if tls is true, encryption is implied and must not be started
424 features.encryptionEnabled = result.isDirectTls();
425 verifiedHostname =
426 result.isAuthenticated() ? result.getHostname().toString() : null;
427 final InetSocketAddress addr;
428 if (result.getIp() != null) {
429 addr = new InetSocketAddress(result.getIp(), result.getPort());
430 Log.d(
431 Config.LOGTAG,
432 account.getJid().asBareJid().toString()
433 + ": using values from resolver "
434 + (result.getHostname() == null
435 ? ""
436 : result.getHostname().toString() + "/")
437 + result.getIp().getHostAddress()
438 + ":"
439 + result.getPort()
440 + " tls: "
441 + features.encryptionEnabled);
442 } else {
443 addr =
444 new InetSocketAddress(
445 IDN.toASCII(result.getHostname().toString()),
446 result.getPort());
447 Log.d(
448 Config.LOGTAG,
449 account.getJid().asBareJid().toString()
450 + ": using values from resolver "
451 + result.getHostname().toString()
452 + ":"
453 + result.getPort()
454 + " tls: "
455 + features.encryptionEnabled);
456 }
457
458 localSocket = new Socket();
459 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
460
461 // TODO use result.isDirect() as condition and set encryptionEnabled after
462 if (features.encryptionEnabled) {
463 localSocket = upgradeSocketToTls(localSocket);
464 }
465
466 localSocket.setSoTimeout(Config.SOCKET_TIMEOUT * 1000);
467 if (startXmpp(localSocket)) {
468 // reset to 0; once the connection is established we don't want this
469 localSocket.setSoTimeout(0);
470 if (!hardcoded && !result.equals(storedBackupResult)) {
471 mXmppConnectionService.databaseBackend.saveResolverResult(
472 domain, result);
473 }
474 this.currentResolverResult = result;
475 this.seeOtherHostResolverResult = null;
476 break; // successfully connected to server that speaks xmpp
477 } else {
478 FileBackend.close(localSocket);
479 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
480 }
481 } catch (final StateChangingException e) {
482 if (!iterator.hasNext()) {
483 throw e;
484 }
485 } catch (InterruptedException e) {
486 Log.d(
487 Config.LOGTAG,
488 account.getJid().asBareJid()
489 + ": thread was interrupted before beginning stream");
490 return;
491 } catch (final Throwable e) {
492 Log.d(
493 Config.LOGTAG,
494 account.getJid().asBareJid().toString()
495 + ": "
496 + e.getMessage()
497 + "("
498 + e.getClass().getName()
499 + ")");
500 if (!iterator.hasNext()) {
501 throw new UnknownHostException();
502 }
503 }
504 }
505 }
506 processStream();
507 } catch (final SecurityException e) {
508 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
509 } catch (final StateChangingException e) {
510 this.changeStatus(e.state);
511 } catch (final UnknownHostException
512 | ConnectException
513 | SocksSocketFactory.HostNotFoundException e) {
514 this.changeStatus(Account.State.SERVER_NOT_FOUND);
515 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
516 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
517 } catch (final IOException | XmlPullParserException e) {
518 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
519 this.changeStatus(Account.State.OFFLINE);
520 this.attempt = Math.max(0, this.attempt - 1);
521 } finally {
522 if (!Thread.currentThread().isInterrupted()) {
523 forceCloseSocket();
524 } else {
525 Log.d(
526 Config.LOGTAG,
527 account.getJid().asBareJid()
528 + ": not force closing socket because thread was interrupted");
529 }
530 }
531 }
532
533 /**
534 * Starts xmpp protocol, call after connecting to socket
535 *
536 * @return true if server returns with valid xmpp, false otherwise
537 */
538 private boolean startXmpp(final Socket socket) throws Exception {
539 if (Thread.currentThread().isInterrupted()) {
540 throw new InterruptedException();
541 }
542 this.socket = socket;
543 tagReader = new XmlReader();
544 if (tagWriter != null) {
545 tagWriter.forceClose();
546 }
547 tagWriter = new TagWriter();
548 tagWriter.setOutputStream(socket.getOutputStream());
549 tagReader.setInputStream(socket.getInputStream());
550 tagWriter.beginDocument();
551 final boolean quickStart;
552 if (socket instanceof SSLSocket sslSocket) {
553 SSLSockets.log(account, sslSocket);
554 quickStart = establishStream(SSLSockets.version(sslSocket));
555 } else {
556 quickStart = establishStream(SSLSockets.Version.NONE);
557 }
558 final Tag tag = tagReader.readTag();
559 if (Thread.currentThread().isInterrupted()) {
560 throw new InterruptedException();
561 }
562 if (tag == null) {
563 return false;
564 }
565 final boolean success = tag.isStart("stream", Namespace.STREAMS);
566 if (success) {
567 final var from = tag.getAttribute("from");
568 if (from == null || !from.equals(account.getServer())) {
569 throw new StateChangingException(Account.State.HOST_UNKNOWN);
570 }
571 }
572 if (success && quickStart) {
573 this.quickStartInProgress = true;
574 }
575 return success;
576 }
577
578 private SSLSocketFactory getSSLSocketFactory()
579 throws NoSuchAlgorithmException, KeyManagementException {
580 final SSLContext sc = SSLSockets.getSSLContext();
581 final MemorizingTrustManager trustManager =
582 this.mXmppConnectionService.getMemorizingTrustManager();
583 final KeyManager[] keyManager;
584 if (account.getPrivateKeyAlias() != null) {
585 keyManager = new KeyManager[] {new MyKeyManager()};
586 } else {
587 keyManager = null;
588 }
589 final String domain = account.getServer();
590 sc.init(
591 keyManager,
592 new X509TrustManager[] {
593 mInteractive
594 ? trustManager.getInteractive(domain)
595 : trustManager.getNonInteractive(domain)
596 },
597 SECURE_RANDOM);
598 return sc.getSocketFactory();
599 }
600
601 @Override
602 public void run() {
603 synchronized (this) {
604 this.mThread = Thread.currentThread();
605 if (this.mThread.isInterrupted()) {
606 Log.d(
607 Config.LOGTAG,
608 account.getJid().asBareJid()
609 + ": aborting connect because thread was interrupted");
610 return;
611 }
612 forceCloseSocket();
613 }
614 connect();
615 }
616
617 private void processStream() throws XmlPullParserException, IOException {
618 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
619 this.mStreamCountDownLatch = streamCountDownLatch;
620 Tag nextTag = tagReader.readTag();
621 while (nextTag != null && !nextTag.isEnd("stream")) {
622 if (nextTag.isStart("error", Namespace.STREAMS)) {
623 processStreamError(tagReader.readElement(nextTag, StreamError.class));
624 } else if (nextTag.isStart("features", Namespace.STREAMS)) {
625 processStreamFeatures(nextTag);
626 } else if (nextTag.isStart("proceed", Namespace.TLS)) {
627 switchOverToTls(nextTag);
628 } else if (nextTag.isStart("failure", Namespace.TLS)) {
629 throw new StateChangingException(Account.State.TLS_ERROR);
630 } else if (!isSecure()) {
631 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
632 } else if (account.isOptionSet(Account.OPTION_REGISTER)
633 && nextTag.isStart("iq", Namespace.JABBER_CLIENT)) {
634 processIq(nextTag);
635 } else if (this.loginInfo == null) {
636 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
637 } else if (nextTag.isStart("success", Namespace.SASL)) {
638 processSuccess(tagReader.readElement(nextTag, Success.class));
639 break;
640 } else if (nextTag.isStart("success", Namespace.SASL_2)) {
641 processSuccess(
642 tagReader.readElement(
643 nextTag, im.conversations.android.xmpp.model.sasl2.Success.class));
644 } else if (nextTag.isStart("failure", Namespace.SASL)) {
645 final var failure = tagReader.readElement(nextTag, Failure.class);
646 processFailure(failure);
647 } else if (nextTag.isStart("failure", Namespace.SASL_2)) {
648 final var failure =
649 tagReader.readElement(
650 nextTag, im.conversations.android.xmpp.model.sasl2.Failure.class);
651 processFailure(failure);
652 } else if (nextTag.isStart("continue", Namespace.SASL_2)) {
653 // two step sasl2 - we don’t support this yet
654 throw new StateChangingException(Account.State.INCOMPATIBLE_CLIENT);
655 } else if (nextTag.isStart("challenge")) {
656 final Element challenge = tagReader.readElement(nextTag);
657 processChallenge(challenge);
658 } else if (!LoginInfo.isSuccess(this.loginInfo)) {
659 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
660 } else if (this.streamId != null
661 && nextTag.isStart("resumed", Namespace.STREAM_MANAGEMENT)) {
662 final Resumed resumed = tagReader.readElement(nextTag, Resumed.class);
663 processResumed(resumed);
664 } else if (nextTag.isStart("failed", Namespace.STREAM_MANAGEMENT)) {
665 final Failed failed = tagReader.readElement(nextTag, Failed.class);
666 processFailed(failed, true);
667 } else if (nextTag.isStart("iq", Namespace.JABBER_CLIENT)) {
668 processIq(nextTag);
669 } else if (!isBound) {
670 Log.d(
671 Config.LOGTAG,
672 account.getJid().asBareJid()
673 + ": server sent unexpected"
674 + nextTag.identifier());
675 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
676 } else if (nextTag.isStart("message", Namespace.JABBER_CLIENT)) {
677 processMessage(nextTag);
678 } else if (nextTag.isStart("presence", Namespace.JABBER_CLIENT)) {
679 processPresence(nextTag);
680 } else if (nextTag.isStart("enabled", Namespace.STREAM_MANAGEMENT)) {
681 final var enabled = tagReader.readElement(nextTag, Enabled.class);
682 processEnabled(enabled);
683 } else if (nextTag.isStart("r", Namespace.STREAM_MANAGEMENT)) {
684 tagReader.readElement(nextTag);
685 if (Config.EXTENDED_SM_LOGGING) {
686 Log.d(
687 Config.LOGTAG,
688 account.getJid().asBareJid()
689 + ": acknowledging stanza #"
690 + this.stanzasReceived);
691 }
692 final Ack ack = new Ack(this.stanzasReceived);
693 tagWriter.writeStanzaAsync(ack);
694 } else if (nextTag.isStart("a", Namespace.STREAM_MANAGEMENT)) {
695 boolean accountUiNeedsRefresh = false;
696 synchronized (NotificationService.CATCHUP_LOCK) {
697 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
698 final int messageCount = mSmCatchupMessageCounter.get();
699 final int pendingIQs = packetCallbacks.size();
700 Log.d(
701 Config.LOGTAG,
702 account.getJid().asBareJid()
703 + ": SM catchup complete (messages="
704 + messageCount
705 + ", pending IQs="
706 + pendingIQs
707 + ")");
708 accountUiNeedsRefresh = true;
709 if (messageCount > 0) {
710 mXmppConnectionService
711 .getNotificationService()
712 .finishBacklog(true, account);
713 }
714 }
715 }
716 if (accountUiNeedsRefresh) {
717 mXmppConnectionService.updateAccountUi();
718 }
719 final var ack = tagReader.readElement(nextTag, Ack.class);
720 lastPacketReceived = SystemClock.elapsedRealtime();
721 final boolean acknowledgedMessages;
722 synchronized (this.mStanzaQueue) {
723 final Optional<Integer> serverSequence = ack.getHandled();
724 if (serverSequence.isPresent()) {
725 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence.get());
726 } else {
727 acknowledgedMessages = false;
728 Log.d(
729 Config.LOGTAG,
730 account.getJid().asBareJid()
731 + ": server send ack without sequence number");
732 }
733 }
734 if (acknowledgedMessages) {
735 mXmppConnectionService.updateConversationUi();
736 }
737 } else {
738 Log.e(
739 Config.LOGTAG,
740 account.getJid().asBareJid()
741 + ": Encountered unknown stream element"
742 + nextTag.identifier());
743 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
744 }
745 nextTag = tagReader.readTag();
746 }
747 if (nextTag != null && nextTag.isEnd("stream")) {
748 streamCountDownLatch.countDown();
749 }
750 }
751
752 private void processChallenge(final Element challenge) throws IOException {
753 final SaslMechanism.Version version;
754 try {
755 version = SaslMechanism.Version.of(challenge);
756 } catch (final IllegalArgumentException e) {
757 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
758 }
759 final StreamElement response;
760 if (version == SaslMechanism.Version.SASL) {
761 response = new Response();
762 } else if (version == SaslMechanism.Version.SASL_2) {
763 response = new im.conversations.android.xmpp.model.sasl2.Response();
764 } else {
765 throw new AssertionError("Missing implementation for " + version);
766 }
767 final LoginInfo currentLoginInfo = this.loginInfo;
768 if (currentLoginInfo == null || LoginInfo.isSuccess(currentLoginInfo)) {
769 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
770 }
771 try {
772 response.setContent(
773 currentLoginInfo.saslMechanism.getResponse(
774 challenge.getContent(), sslSocketOrNull(socket)));
775 } catch (final SaslMechanism.AuthenticationException e) {
776 // TODO: Send auth abort tag.
777 Log.e(Config.LOGTAG, e.toString());
778 throw new StateChangingException(Account.State.UNAUTHORIZED);
779 }
780 tagWriter.writeElement(response);
781 }
782
783 private void processSuccess(final StreamElement element)
784 throws IOException, XmlPullParserException {
785 final LoginInfo currentLoginInfo = this.loginInfo;
786 final SaslMechanism currentSaslMechanism = LoginInfo.mechanism(currentLoginInfo);
787 if (currentLoginInfo == null || currentSaslMechanism == null) {
788 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
789 }
790 final SaslMechanism.Version version;
791 final String challenge;
792 if (element instanceof Success success) {
793 challenge = success.getContent();
794 version = SaslMechanism.Version.SASL;
795 } else if (element instanceof im.conversations.android.xmpp.model.sasl2.Success success) {
796 challenge = success.findChildContent("additional-data");
797 version = SaslMechanism.Version.SASL_2;
798 } else {
799 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
800 }
801 try {
802 currentLoginInfo.success(challenge, sslSocketOrNull(socket));
803 } catch (final SaslMechanism.AuthenticationException e) {
804 Log.e(Config.LOGTAG, account.getJid().asBareJid() + ": authentication failure ", e);
805 throw new StateChangingException(Account.State.UNAUTHORIZED);
806 }
807 Log.d(
808 Config.LOGTAG,
809 account.getJid().asBareJid().toString() + ": logged in (using " + version + ")");
810 if (SaslMechanism.pin(currentSaslMechanism)) {
811 account.setPinnedMechanism(currentSaslMechanism);
812 }
813 if (element instanceof im.conversations.android.xmpp.model.sasl2.Success success) {
814 final var authorizationJid = success.getAuthorizationIdentifier();
815 checkAssignedDomainOrThrow(authorizationJid);
816 Log.d(
817 Config.LOGTAG,
818 account.getJid().asBareJid()
819 + ": SASL 2.0 authorization identifier was "
820 + authorizationJid);
821 // TODO this should only happen when we used Bind 2
822 if (authorizationJid.isFullJid() && account.setJid(authorizationJid)) {
823 Log.d(
824 Config.LOGTAG,
825 account.getJid().asBareJid()
826 + ": jid changed during SASL 2.0. updating database");
827 }
828 final Bound bound = success.getExtension(Bound.class);
829 final Resumed resumed = success.getExtension(Resumed.class);
830 final Failed failed = success.getExtension(Failed.class);
831 final Element tokenWrapper = success.findChild("token", Namespace.FAST);
832 final String token = tokenWrapper == null ? null : tokenWrapper.getAttribute("token");
833 if (bound != null && resumed != null) {
834 Log.d(
835 Config.LOGTAG,
836 account.getJid().asBareJid()
837 + ": server sent bound and resumed in SASL2 success");
838 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
839 }
840 if (resumed != null && streamId != null) {
841 if (this.boundStreamFeatures != null) {
842 this.streamFeatures = this.boundStreamFeatures;
843 Log.d(
844 Config.LOGTAG,
845 "putting previous stream features back in place: "
846 + XmlHelper.printElementNames(this.boundStreamFeatures));
847 }
848 processResumed(resumed);
849 } else if (failed != null) {
850 processFailed(failed, false); // wait for new stream features
851 }
852 if (bound != null) {
853 clearIqCallbacks();
854 this.isBound = true;
855 processNopStreamFeatures();
856 this.boundStreamFeatures = this.streamFeatures;
857 final Enabled streamManagementEnabled = bound.getExtension(Enabled.class);
858 final Element carbonsEnabled = bound.findChild("enabled", Namespace.CARBONS);
859 final boolean waitForDisco;
860 if (streamManagementEnabled != null) {
861 resetOutboundStanzaQueue();
862 processEnabled(streamManagementEnabled);
863 waitForDisco = true;
864 } else {
865 // if we did not enable stream management in bind do it now
866 waitForDisco = enableStreamManagement();
867 }
868 final boolean negotiatedCarbons;
869 if (carbonsEnabled != null) {
870 negotiatedCarbons = true;
871 Log.d(
872 Config.LOGTAG,
873 account.getJid().asBareJid()
874 + ": successfully enabled carbons (via Bind 2.0)");
875 features.carbonsEnabled = true;
876 } else if (currentLoginInfo.inlineBindFeatures != null
877 && currentLoginInfo.inlineBindFeatures.contains(Namespace.CARBONS)) {
878 negotiatedCarbons = true;
879 Log.d(
880 Config.LOGTAG,
881 account.getJid().asBareJid()
882 + ": successfully enabled carbons (via Bind 2.0/implicit)");
883 features.carbonsEnabled = true;
884 } else {
885 negotiatedCarbons = false;
886 }
887 sendPostBindInitialization(waitForDisco, negotiatedCarbons);
888 }
889 final HashedToken.Mechanism tokenMechanism;
890 if (SaslMechanism.hashedToken(currentSaslMechanism)) {
891 tokenMechanism = ((HashedToken) currentSaslMechanism).getTokenMechanism();
892 } else if (this.hashTokenRequest != null) {
893 tokenMechanism = this.hashTokenRequest;
894 } else {
895 tokenMechanism = null;
896 }
897 if (tokenMechanism != null && !Strings.isNullOrEmpty(token)) {
898 if (ChannelBinding.priority(tokenMechanism.channelBinding)
899 >= ChannelBindingMechanism.getPriority(currentSaslMechanism)) {
900 this.account.setFastToken(tokenMechanism, token);
901 Log.d(
902 Config.LOGTAG,
903 account.getJid().asBareJid()
904 + ": storing hashed token "
905 + tokenMechanism);
906 } else {
907 Log.d(
908 Config.LOGTAG,
909 account.getJid().asBareJid()
910 + ": not accepting hashed token "
911 + tokenMechanism.name()
912 + " for log in mechanism "
913 + currentSaslMechanism.getMechanism());
914 this.account.resetFastToken();
915 }
916 } else if (this.hashTokenRequest != null) {
917 Log.w(
918 Config.LOGTAG,
919 account.getJid().asBareJid()
920 + ": no response to our hashed token request "
921 + this.hashTokenRequest);
922 }
923 }
924 mXmppConnectionService.databaseBackend.updateAccount(account);
925 this.quickStartInProgress = false;
926 if (version == SaslMechanism.Version.SASL) {
927 tagReader.reset();
928 sendStartStream(false, true);
929 final Tag tag = tagReader.readTag();
930 if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
931 processStream();
932 return;
933 } else {
934 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
935 }
936 }
937 }
938
939 private void resetOutboundStanzaQueue() {
940 synchronized (this.mStanzaQueue) {
941 final ImmutableList.Builder<Stanza> intermediateStanzasBuilder =
942 new ImmutableList.Builder<>();
943 if (Config.EXTENDED_SM_LOGGING) {
944 Log.d(
945 Config.LOGTAG,
946 account.getJid().asBareJid()
947 + ": stanzas sent before auth: "
948 + this.stanzasSentBeforeAuthentication);
949 }
950 for (int i = this.stanzasSentBeforeAuthentication + 1; i <= this.stanzasSent; ++i) {
951 final Stanza stanza = this.mStanzaQueue.get(i);
952 if (stanza != null) {
953 intermediateStanzasBuilder.add(stanza);
954 }
955 }
956 this.mStanzaQueue.clear();
957 final var intermediateStanzas = intermediateStanzasBuilder.build();
958 for (int i = 0; i < intermediateStanzas.size(); ++i) {
959 this.mStanzaQueue.append(i + 1, intermediateStanzas.get(i));
960 }
961 this.stanzasSent = intermediateStanzas.size();
962 if (Config.EXTENDED_SM_LOGGING) {
963 Log.d(
964 Config.LOGTAG,
965 account.getJid().asBareJid()
966 + ": resetting outbound stanza queue to "
967 + this.stanzasSent);
968 }
969 }
970 }
971
972 private void processNopStreamFeatures() throws IOException {
973 final Tag tag = tagReader.readTag();
974 if (tag != null && tag.isStart("features", Namespace.STREAMS)) {
975 this.streamFeatures =
976 tagReader.readElement(
977 tag, im.conversations.android.xmpp.model.streams.Features.class);
978 Log.d(
979 Config.LOGTAG,
980 account.getJid().asBareJid()
981 + ": processed NOP stream features after success: "
982 + XmlHelper.printElementNames(this.streamFeatures));
983 } else {
984 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received " + tag);
985 Log.d(
986 Config.LOGTAG,
987 account.getJid().asBareJid()
988 + ": server did not send stream features after SASL2 success");
989 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
990 }
991 }
992
993 private void processFailure(final AuthenticationFailure failure) throws IOException {
994 final SaslMechanism.Version version;
995 try {
996 version = SaslMechanism.Version.of(failure);
997 } catch (final IllegalArgumentException e) {
998 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
999 }
1000 Log.d(Config.LOGTAG, failure.toString());
1001 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": login failure " + version);
1002 if (SaslMechanism.hashedToken(LoginInfo.mechanism(this.loginInfo))) {
1003 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resetting token");
1004 account.resetFastToken();
1005 mXmppConnectionService.databaseBackend.updateAccount(account);
1006 }
1007 final var errorCondition = failure.getErrorCondition();
1008 if (errorCondition instanceof SaslError.InvalidMechanism
1009 || errorCondition instanceof SaslError.MechanismTooWeak) {
1010 Log.d(
1011 Config.LOGTAG,
1012 account.getJid().asBareJid()
1013 + ": invalid or too weak mechanism. resetting quick start");
1014 if (account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false)) {
1015 mXmppConnectionService.databaseBackend.updateAccount(account);
1016 }
1017 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1018 } else if (errorCondition instanceof SaslError.TemporaryAuthFailure) {
1019 throw new StateChangingException(Account.State.TEMPORARY_AUTH_FAILURE);
1020 } else if (errorCondition instanceof SaslError.AccountDisabled) {
1021 final String text = failure.getText();
1022 if (Strings.isNullOrEmpty(text)) {
1023 throw new StateChangingException(Account.State.UNAUTHORIZED);
1024 }
1025 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
1026 if (matcher.find()) {
1027 final HttpUrl url;
1028 try {
1029 url = HttpUrl.get(text.substring(matcher.start(), matcher.end()));
1030 } catch (final IllegalArgumentException e) {
1031 throw new StateChangingException(Account.State.UNAUTHORIZED);
1032 }
1033 if (url.isHttps()) {
1034 this.redirectionUrl = url;
1035 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
1036 }
1037 }
1038 }
1039 if (SaslMechanism.hashedToken(LoginInfo.mechanism(this.loginInfo))) {
1040 Log.d(
1041 Config.LOGTAG,
1042 account.getJid().asBareJid()
1043 + ": fast authentication failed. falling back to regular"
1044 + " authentication");
1045 authenticate();
1046 } else {
1047 throw new StateChangingException(Account.State.UNAUTHORIZED);
1048 }
1049 }
1050
1051 private static SSLSocket sslSocketOrNull(final Socket socket) {
1052 if (socket instanceof SSLSocket) {
1053 return (SSLSocket) socket;
1054 } else {
1055 return null;
1056 }
1057 }
1058
1059 private void processEnabled(final Enabled enabled) {
1060 final StreamId streamId = getStreamId(enabled);
1061 if (streamId == null) {
1062 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream management enabled");
1063 } else {
1064 Log.d(
1065 Config.LOGTAG,
1066 account.getJid().asBareJid()
1067 + ": stream management enabled. resume at: "
1068 + streamId.location);
1069 }
1070 this.streamId = streamId;
1071 this.stanzasReceived = 0;
1072 this.inSmacksSession = true;
1073 final var r = new Request();
1074 tagWriter.writeStanzaAsync(r);
1075 }
1076
1077 @Nullable
1078 private StreamId getStreamId(final Enabled enabled) {
1079 final Optional<String> id = enabled.getResumeId();
1080 final String locationAttribute = enabled.getLocation();
1081 final Resolver.Result currentResolverResult = this.currentResolverResult;
1082 final Resolver.Result location;
1083 if (Strings.isNullOrEmpty(locationAttribute) || currentResolverResult == null) {
1084 location = null;
1085 } else {
1086 location = currentResolverResult.seeOtherHost(locationAttribute);
1087 }
1088 return id.isPresent() ? new StreamId(id.get(), location) : null;
1089 }
1090
1091 private void processResumed(final Resumed resumed) throws StateChangingException {
1092 final var pendingResumeId = this.pendingResumeId.pop();
1093 final var prevId = resumed.getPrevId();
1094 if (prevId == null || !prevId.equals(pendingResumeId)) {
1095 Log.d(
1096 Config.LOGTAG,
1097 account.getJid().asBareJid()
1098 + ": server tried resume with unknown id "
1099 + prevId);
1100 resetStreamId();
1101 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1102 }
1103 this.inSmacksSession = true;
1104 this.isBound = true;
1105 this.tagWriter.writeStanzaAsync(new Request());
1106 lastPacketReceived = SystemClock.elapsedRealtime();
1107 final Optional<Integer> h = resumed.getHandled();
1108 final int serverCount;
1109 if (h.isPresent()) {
1110 serverCount = h.get();
1111 } else {
1112 resetStreamId();
1113 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1114 }
1115 final ArrayList<Stanza> failedStanzas = new ArrayList<>();
1116 final boolean acknowledgedMessages;
1117 synchronized (this.mStanzaQueue) {
1118 if (serverCount < stanzasSent) {
1119 Log.d(
1120 Config.LOGTAG,
1121 account.getJid().asBareJid() + ": session resumed with lost packages");
1122 stanzasSent = serverCount;
1123 } else {
1124 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": session resumed");
1125 }
1126 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
1127 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
1128 failedStanzas.add(mStanzaQueue.valueAt(i));
1129 }
1130 mStanzaQueue.clear();
1131 }
1132 if (acknowledgedMessages) {
1133 mXmppConnectionService.updateConversationUi();
1134 }
1135 Log.d(
1136 Config.LOGTAG,
1137 account.getJid().asBareJid() + ": resending " + failedStanzas.size() + " stanzas");
1138 for (final Stanza packet : failedStanzas) {
1139 if (packet instanceof im.conversations.android.xmpp.model.stanza.Message message) {
1140 mXmppConnectionService.markMessage(
1141 account,
1142 message.getTo().asBareJid(),
1143 message.getId(),
1144 Message.STATUS_UNSEND);
1145 }
1146 sendPacket(packet);
1147 }
1148 if (mWaitForDisco.get()) {
1149 this.lastDiscoStarted = SystemClock.elapsedRealtime();
1150 Log.d(
1151 Config.LOGTAG,
1152 account.getJid().asBareJid() + ": awaiting disco results after resume");
1153 changeStatus(Account.State.CONNECTING);
1154 } else {
1155 changeStatusToOnline();
1156 }
1157 }
1158
1159 private void changeStatusToOnline() {
1160 Log.d(
1161 Config.LOGTAG,
1162 account.getJid().asBareJid() + ": online with resource " + account.getResource());
1163 changeStatus(Account.State.ONLINE);
1164 }
1165
1166 private void processFailed(final Failed failed, final boolean sendBindRequest) {
1167 final Optional<Integer> serverCount = failed.getHandled();
1168 if (serverCount.isPresent()) {
1169 Log.d(
1170 Config.LOGTAG,
1171 account.getJid().asBareJid()
1172 + ": resumption failed but server acknowledged stanza #"
1173 + serverCount.get());
1174 final boolean acknowledgedMessages;
1175 synchronized (this.mStanzaQueue) {
1176 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount.get());
1177 }
1178 if (acknowledgedMessages) {
1179 mXmppConnectionService.updateConversationUi();
1180 }
1181 } else {
1182 Log.d(
1183 Config.LOGTAG,
1184 account.getJid().asBareJid()
1185 + ": resumption failed ("
1186 + XmlHelper.print(failed.getChildren())
1187 + ")");
1188 }
1189 resetStreamId();
1190 if (sendBindRequest) {
1191 sendBindRequest();
1192 }
1193 }
1194
1195 private boolean acknowledgeStanzaUpTo(final int serverCount) {
1196 if (serverCount > stanzasSent) {
1197 Log.e(
1198 Config.LOGTAG,
1199 "server acknowledged more stanzas than we sent. serverCount="
1200 + serverCount
1201 + ", ourCount="
1202 + stanzasSent);
1203 }
1204 boolean acknowledgedMessages = false;
1205 for (int i = 0; i < mStanzaQueue.size(); ++i) {
1206 if (serverCount >= mStanzaQueue.keyAt(i)) {
1207 if (Config.EXTENDED_SM_LOGGING) {
1208 Log.d(
1209 Config.LOGTAG,
1210 account.getJid().asBareJid()
1211 + ": server acknowledged stanza #"
1212 + mStanzaQueue.keyAt(i));
1213 }
1214 final Stanza stanza = mStanzaQueue.valueAt(i);
1215 if (stanza instanceof im.conversations.android.xmpp.model.stanza.Message packet
1216 && acknowledgedListener != null) {
1217 final String id = packet.getId();
1218 final Jid to = packet.getTo();
1219 if (id != null && to != null) {
1220 acknowledgedMessages |=
1221 acknowledgedListener.onMessageAcknowledged(account, to, id);
1222 }
1223 }
1224 mStanzaQueue.removeAt(i);
1225 i--;
1226 }
1227 }
1228 return acknowledgedMessages;
1229 }
1230
1231 private <S extends Stanza> @NonNull S processPacket(final Tag currentTag, final Class<S> clazz)
1232 throws IOException {
1233 final S stanza = tagReader.readElement(currentTag, clazz);
1234 if (stanzasReceived == Integer.MAX_VALUE) {
1235 resetStreamId();
1236 throw new IOException("time to restart the session. cant handle >2 billion pcks");
1237 }
1238 if (inSmacksSession) {
1239 ++stanzasReceived;
1240 } else if (features.sm()) {
1241 Log.d(
1242 Config.LOGTAG,
1243 account.getJid().asBareJid()
1244 + ": not counting stanza("
1245 + stanza.getClass().getSimpleName()
1246 + "). Not in smacks session.");
1247 }
1248 lastPacketReceived = SystemClock.elapsedRealtime();
1249 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
1250 Log.d(Config.LOGTAG, "[background stanza] " + stanza);
1251 }
1252 return stanza;
1253 }
1254
1255 private void processIq(final Tag currentTag) throws IOException {
1256 final Iq packet = processPacket(currentTag, Iq.class);
1257 if (packet.isInvalid()) {
1258 Log.e(
1259 Config.LOGTAG,
1260 "encountered invalid iq from='"
1261 + packet.getFrom()
1262 + "' to='"
1263 + packet.getTo()
1264 + "'");
1265 return;
1266 }
1267 if (Thread.currentThread().isInterrupted()) {
1268 Log.d(
1269 Config.LOGTAG,
1270 account.getJid().asBareJid() + "Not processing iq. Thread was interrupted");
1271 return;
1272 }
1273 if (packet.hasExtension(Jingle.class) && packet.getType() == Iq.Type.SET && isBound) {
1274 if (this.jingleListener != null) {
1275 this.jingleListener.onJinglePacketReceived(account, packet);
1276 }
1277 } else {
1278 final var callback = getIqPacketReceivedCallback(packet);
1279 if (callback == null) {
1280 Log.d(
1281 Config.LOGTAG,
1282 account.getJid().asBareJid().toString()
1283 + ": no callback registered for IQ from "
1284 + packet.getFrom());
1285 return;
1286 }
1287 try {
1288 callback.accept(packet);
1289 } catch (final StateChangingError error) {
1290 throw new StateChangingException(error.state);
1291 }
1292 }
1293 }
1294
1295 private Consumer<Iq> getIqPacketReceivedCallback(final Iq stanza)
1296 throws StateChangingException {
1297 final boolean isRequest =
1298 stanza.getType() == Iq.Type.GET || stanza.getType() == Iq.Type.SET;
1299 if (isRequest) {
1300 if (isBound) {
1301 return this.unregisteredIqListener;
1302 } else {
1303 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1304 }
1305 } else {
1306 synchronized (this.packetCallbacks) {
1307 final var pair = packetCallbacks.get(stanza.getId());
1308 if (pair == null) {
1309 return null;
1310 }
1311 if (pair.first.toServer(account)) {
1312 if (stanza.fromServer(account)) {
1313 packetCallbacks.remove(stanza.getId());
1314 return pair.second;
1315 } else {
1316 Log.e(
1317 Config.LOGTAG,
1318 account.getJid().asBareJid().toString()
1319 + ": ignoring spoofed iq packet");
1320 }
1321 } else {
1322 if (stanza.getFrom() != null && stanza.getFrom().equals(pair.first.getTo())) {
1323 packetCallbacks.remove(stanza.getId());
1324 return pair.second;
1325 } else {
1326 Log.e(
1327 Config.LOGTAG,
1328 account.getJid().asBareJid().toString()
1329 + ": ignoring spoofed iq packet");
1330 }
1331 }
1332 }
1333 }
1334 return null;
1335 }
1336
1337 private void processMessage(final Tag currentTag) throws IOException {
1338 final var packet =
1339 processPacket(currentTag, im.conversations.android.xmpp.model.stanza.Message.class);
1340 if (packet.isInvalid()) {
1341 Log.e(
1342 Config.LOGTAG,
1343 "encountered invalid message from='"
1344 + packet.getFrom()
1345 + "' to='"
1346 + packet.getTo()
1347 + "'");
1348 return;
1349 }
1350 if (Thread.currentThread().isInterrupted()) {
1351 Log.d(
1352 Config.LOGTAG,
1353 account.getJid().asBareJid()
1354 + "Not processing message. Thread was interrupted");
1355 return;
1356 }
1357 this.messageListener.accept(packet);
1358 }
1359
1360 private void processPresence(final Tag currentTag) throws IOException {
1361 final var packet = processPacket(currentTag, Presence.class);
1362 if (packet.isInvalid()) {
1363 Log.e(
1364 Config.LOGTAG,
1365 "encountered invalid presence from='"
1366 + packet.getFrom()
1367 + "' to='"
1368 + packet.getTo()
1369 + "'");
1370 return;
1371 }
1372 if (Thread.currentThread().isInterrupted()) {
1373 Log.d(
1374 Config.LOGTAG,
1375 account.getJid().asBareJid()
1376 + "Not processing presence. Thread was interrupted");
1377 return;
1378 }
1379 this.presenceListener.accept(packet);
1380 }
1381
1382 private void sendStartTLS() throws IOException {
1383 tagWriter.writeElement(new StartTls());
1384 }
1385
1386 private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
1387 tagReader.readElement(currentTag, Proceed.class);
1388 final Socket socket = this.socket;
1389 final SSLSocket sslSocket = upgradeSocketToTls(socket);
1390 this.socket = sslSocket;
1391 this.tagReader.setInputStream(sslSocket.getInputStream());
1392 this.tagWriter.setOutputStream(sslSocket.getOutputStream());
1393 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
1394 final boolean quickStart;
1395 try {
1396 quickStart = establishStream(SSLSockets.version(sslSocket));
1397 } catch (final InterruptedException e) {
1398 return;
1399 }
1400 if (quickStart) {
1401 this.quickStartInProgress = true;
1402 }
1403 features.encryptionEnabled = true;
1404 final Tag tag = tagReader.readTag();
1405 if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
1406 SSLSockets.log(account, sslSocket);
1407 processStream();
1408 } else {
1409 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
1410 }
1411 sslSocket.close();
1412 }
1413
1414 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
1415 final SSLSocketFactory sslSocketFactory;
1416 try {
1417 sslSocketFactory = getSSLSocketFactory();
1418 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
1419 throw new StateChangingException(Account.State.TLS_ERROR);
1420 }
1421 final InetAddress address = socket.getInetAddress();
1422 final SSLSocket sslSocket =
1423 (SSLSocket)
1424 sslSocketFactory.createSocket(
1425 socket, address.getHostAddress(), socket.getPort(), true);
1426 SSLSockets.setSecurity(sslSocket);
1427 SSLSockets.setHostname(sslSocket, IDN.toASCII(account.getServer()));
1428 SSLSockets.setApplicationProtocol(sslSocket, "xmpp-client");
1429 final XmppDomainVerifier xmppDomainVerifier = new XmppDomainVerifier();
1430 try {
1431 if (!xmppDomainVerifier.verify(
1432 account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
1433 Log.d(
1434 Config.LOGTAG,
1435 account.getJid().asBareJid()
1436 + ": TLS certificate domain verification failed");
1437 FileBackend.close(sslSocket);
1438 throw new StateChangingException(Account.State.TLS_ERROR_DOMAIN);
1439 }
1440 } catch (final SSLPeerUnverifiedException e) {
1441 FileBackend.close(sslSocket);
1442 throw new StateChangingException(Account.State.TLS_ERROR);
1443 }
1444 return sslSocket;
1445 }
1446
1447 private void processStreamFeatures(final Tag currentTag) throws IOException {
1448 this.streamFeatures =
1449 tagReader.readElement(
1450 currentTag, im.conversations.android.xmpp.model.streams.Features.class);
1451 final boolean isSecure = isSecure();
1452 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
1453 if (this.quickStartInProgress) {
1454 if (this.streamFeatures.hasStreamFeature(Authentication.class)) {
1455 Log.d(
1456 Config.LOGTAG,
1457 account.getJid().asBareJid()
1458 + ": quick start in progress. ignoring features: "
1459 + XmlHelper.printElementNames(this.streamFeatures));
1460 if (SaslMechanism.hashedToken(LoginInfo.mechanism(this.loginInfo))) {
1461 return;
1462 }
1463 if (isFastTokenAvailable(this.streamFeatures.getExtension(Authentication.class))) {
1464 Log.d(
1465 Config.LOGTAG,
1466 account.getJid().asBareJid()
1467 + ": fast token available; resetting quick start");
1468 account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false);
1469 mXmppConnectionService.databaseBackend.updateAccount(account);
1470 }
1471 return;
1472 }
1473 Log.d(
1474 Config.LOGTAG,
1475 account.getJid().asBareJid()
1476 + ": server lost support for SASL 2. quick start not possible");
1477 this.account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false);
1478 mXmppConnectionService.databaseBackend.updateAccount(account);
1479 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1480 }
1481 if (this.streamFeatures.hasExtension(StartTls.class) && !features.encryptionEnabled) {
1482 sendStartTLS();
1483 } else if (this.streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1484 && account.isOptionSet(Account.OPTION_REGISTER)) {
1485 if (isSecure) {
1486 register();
1487 } else {
1488 Log.d(
1489 Config.LOGTAG,
1490 account.getJid().asBareJid()
1491 + ": unable to find STARTTLS for registration process "
1492 + XmlHelper.printElementNames(this.streamFeatures));
1493 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1494 }
1495 } else if (!this.streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1496 && account.isOptionSet(Account.OPTION_REGISTER)) {
1497 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
1498 } else if (this.streamFeatures.hasStreamFeature(Authentication.class)
1499 && shouldAuthenticate
1500 && isSecure) {
1501 authenticate(SaslMechanism.Version.SASL_2);
1502 } else if (this.streamFeatures.hasStreamFeature(Mechanisms.class)
1503 && shouldAuthenticate
1504 && isSecure) {
1505 authenticate(SaslMechanism.Version.SASL);
1506 } else if (this.streamFeatures.streamManagement()
1507 && isSecure
1508 && LoginInfo.isSuccess(loginInfo)
1509 && streamId != null
1510 && !inSmacksSession) {
1511 if (Config.EXTENDED_SM_LOGGING) {
1512 Log.d(
1513 Config.LOGTAG,
1514 account.getJid().asBareJid()
1515 + ": resuming after stanza #"
1516 + stanzasReceived);
1517 }
1518 final var streamId = this.streamId.id;
1519 final var resume = new Resume(streamId, stanzasReceived);
1520 prepareForResume(streamId);
1521 this.tagWriter.writeStanzaAsync(resume);
1522 } else if (needsBinding) {
1523 if (this.streamFeatures.hasChild("bind", Namespace.BIND)
1524 && isSecure
1525 && LoginInfo.isSuccess(loginInfo)) {
1526 sendBindRequest();
1527 } else {
1528 Log.d(
1529 Config.LOGTAG,
1530 account.getJid().asBareJid()
1531 + ": unable to find bind feature "
1532 + XmlHelper.printElementNames(this.streamFeatures));
1533 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1534 }
1535 } else {
1536 Log.d(
1537 Config.LOGTAG,
1538 account.getJid().asBareJid()
1539 + ": received NOP stream features: "
1540 + XmlHelper.printElementNames(this.streamFeatures));
1541 }
1542 }
1543
1544 private void authenticate() throws IOException {
1545 final boolean isSecure = isSecure();
1546 if (isSecure && this.streamFeatures.hasStreamFeature(Authentication.class)) {
1547 authenticate(SaslMechanism.Version.SASL_2);
1548 } else if (isSecure && this.streamFeatures.hasStreamFeature(Mechanisms.class)) {
1549 authenticate(SaslMechanism.Version.SASL);
1550 } else {
1551 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1552 }
1553 }
1554
1555 private boolean isSecure() {
1556 return features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
1557 }
1558
1559 private void authenticate(final SaslMechanism.Version version) throws IOException {
1560 final AuthenticationStreamFeature authElement;
1561 if (version == SaslMechanism.Version.SASL) {
1562 authElement = this.streamFeatures.getExtension(Mechanisms.class);
1563 } else {
1564 authElement = this.streamFeatures.getExtension(Authentication.class);
1565 }
1566 final Collection<String> mechanisms = authElement.getMechanismNames();
1567 final Element cbElement =
1568 this.streamFeatures.findChild("sasl-channel-binding", Namespace.CHANNEL_BINDING);
1569 final Collection<ChannelBinding> channelBindings = ChannelBinding.of(cbElement);
1570 final SaslMechanism.Factory factory = new SaslMechanism.Factory(account);
1571 final SaslMechanism saslMechanism =
1572 factory.of(mechanisms, channelBindings, version, SSLSockets.version(this.socket));
1573 this.validate(saslMechanism, mechanisms);
1574 final boolean quickStartAvailable;
1575 final String firstMessage =
1576 saslMechanism.getClientFirstMessage(sslSocketOrNull(this.socket));
1577 final boolean usingFast = SaslMechanism.hashedToken(saslMechanism);
1578 final AuthenticationRequest authenticate;
1579 final LoginInfo loginInfo;
1580 if (version == SaslMechanism.Version.SASL) {
1581 authenticate = new Auth();
1582 if (!Strings.isNullOrEmpty(firstMessage)) {
1583 authenticate.setContent(firstMessage);
1584 }
1585 quickStartAvailable = false;
1586 loginInfo = new LoginInfo(saslMechanism, version, Collections.emptyList());
1587 } else if (version == SaslMechanism.Version.SASL_2) {
1588 final Authentication authentication = (Authentication) authElement;
1589 final var inline = authentication.getInline();
1590 final boolean sm = inline != null && inline.hasExtension(StreamManagement.class);
1591 final HashedToken.Mechanism hashTokenRequest;
1592 if (usingFast) {
1593 hashTokenRequest = null;
1594 } else if (inline != null) {
1595 hashTokenRequest =
1596 HashedToken.Mechanism.best(
1597 inline.getFastMechanisms(), SSLSockets.version(this.socket));
1598 } else {
1599 hashTokenRequest = null;
1600 }
1601 final Collection<String> bindFeatures = Bind2.features(inline);
1602 quickStartAvailable =
1603 sm
1604 && bindFeatures != null
1605 && bindFeatures.containsAll(Bind2.QUICKSTART_FEATURES);
1606 if (bindFeatures != null) {
1607 try {
1608 mXmppConnectionService.restoredFromDatabaseLatch.await();
1609 } catch (final InterruptedException e) {
1610 Log.d(
1611 Config.LOGTAG,
1612 account.getJid().asBareJid()
1613 + ": interrupted while waiting for DB restore during SASL2"
1614 + " bind");
1615 return;
1616 }
1617 }
1618 loginInfo = new LoginInfo(saslMechanism, version, bindFeatures);
1619 this.hashTokenRequest = hashTokenRequest;
1620 authenticate =
1621 generateAuthenticationRequest(
1622 firstMessage, usingFast, hashTokenRequest, bindFeatures, sm);
1623 } else {
1624 throw new AssertionError("Missing implementation for " + version);
1625 }
1626 this.loginInfo = loginInfo;
1627 if (account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, quickStartAvailable)) {
1628 mXmppConnectionService.databaseBackend.updateAccount(account);
1629 }
1630
1631 Log.d(
1632 Config.LOGTAG,
1633 account.getJid().toString()
1634 + ": Authenticating with "
1635 + version
1636 + "/"
1637 + LoginInfo.mechanism(loginInfo).getMechanism());
1638 authenticate.setMechanism(LoginInfo.mechanism(loginInfo));
1639 synchronized (this.mStanzaQueue) {
1640 this.stanzasSentBeforeAuthentication = this.stanzasSent;
1641 tagWriter.writeElement(authenticate);
1642 }
1643 }
1644
1645 private static boolean isFastTokenAvailable(final Authentication authentication) {
1646 final var inline = authentication == null ? null : authentication.getInline();
1647 return inline != null && inline.hasExtension(Fast.class);
1648 }
1649
1650 private void validate(
1651 final @Nullable SaslMechanism saslMechanism, Collection<String> mechanisms)
1652 throws StateChangingException {
1653 if (saslMechanism == null) {
1654 Log.d(
1655 Config.LOGTAG,
1656 account.getJid().asBareJid()
1657 + ": unable to find supported SASL mechanism in "
1658 + mechanisms);
1659 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1660 }
1661 checkRequireChannelBinding(saslMechanism);
1662 if (SaslMechanism.hashedToken(saslMechanism)) {
1663 return;
1664 }
1665 final int pinnedMechanism = account.getPinnedMechanismPriority();
1666 if (pinnedMechanism > saslMechanism.getPriority()) {
1667 Log.e(
1668 Config.LOGTAG,
1669 "Auth failed. Authentication mechanism "
1670 + saslMechanism.getMechanism()
1671 + " has lower priority ("
1672 + saslMechanism.getPriority()
1673 + ") than pinned priority ("
1674 + pinnedMechanism
1675 + "). Possible downgrade attack?");
1676 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
1677 }
1678 }
1679
1680 private void checkRequireChannelBinding(@NonNull final SaslMechanism mechanism)
1681 throws StateChangingException {
1682 if (appSettings.isRequireChannelBinding()) {
1683 if (mechanism instanceof ChannelBindingMechanism) {
1684 return;
1685 }
1686 Log.d(Config.LOGTAG, account.getJid() + ": server did not offer channel binding");
1687 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1688 }
1689 }
1690
1691 private void checkAssignedDomainOrThrow(final Jid jid) throws StateChangingException {
1692 if (jid == null) {
1693 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": bind response is missing jid");
1694 throw new StateChangingException(Account.State.BIND_FAILURE);
1695 }
1696 final var current = this.account.getJid().getDomain();
1697 if (jid.getDomain().equals(current)) {
1698 return;
1699 }
1700 Log.d(
1701 Config.LOGTAG,
1702 account.getJid().asBareJid()
1703 + ": server tried to re-assign domain to "
1704 + jid.getDomain());
1705 throw new StateChangingException(Account.State.BIND_FAILURE);
1706 }
1707
1708 private void checkAssignedDomain(final Jid jid) {
1709 try {
1710 checkAssignedDomainOrThrow(jid);
1711 } catch (final StateChangingException e) {
1712 throw new StateChangingError(e.state);
1713 }
1714 }
1715
1716 private AuthenticationRequest generateAuthenticationRequest(
1717 final String firstMessage, final boolean usingFast) {
1718 return generateAuthenticationRequest(
1719 firstMessage, usingFast, null, Bind2.QUICKSTART_FEATURES, true);
1720 }
1721
1722 private AuthenticationRequest generateAuthenticationRequest(
1723 final String firstMessage,
1724 final boolean usingFast,
1725 final HashedToken.Mechanism hashedTokenRequest,
1726 final Collection<String> bind,
1727 final boolean inlineStreamManagement) {
1728 final var authenticate = new Authenticate();
1729 if (!Strings.isNullOrEmpty(firstMessage)) {
1730 authenticate.addChild("initial-response").setContent(firstMessage);
1731 }
1732 final var userAgent =
1733 authenticate.addExtension(
1734 new UserAgent(
1735 AccountUtils.publicDeviceId(
1736 account, appSettings.getInstallationId())));
1737 userAgent.setSoftware(
1738 String.format("%s %s", BuildConfig.APP_NAME, BuildConfig.VERSION_NAME));
1739 if (!PhoneHelper.isEmulator()) {
1740 userAgent.setDevice(String.format("%s %s", Build.MANUFACTURER, Build.MODEL));
1741 }
1742 // do not include bind if 'inlineStreamManagement' is missing and we have a streamId
1743 // (because we would rather just do a normal SM/resume)
1744 final boolean mayAttemptBind = streamId == null || inlineStreamManagement;
1745 if (bind != null && mayAttemptBind) {
1746 authenticate.addChild(generateBindRequest(bind));
1747 }
1748 if (inlineStreamManagement && streamId != null) {
1749 final var streamId = this.streamId.id;
1750 final var resume = new Resume(streamId, stanzasReceived);
1751 prepareForResume(streamId);
1752 authenticate.addExtension(resume);
1753 }
1754 if (hashedTokenRequest != null) {
1755 authenticate.addExtension(new RequestToken(hashedTokenRequest));
1756 }
1757 if (usingFast) {
1758 authenticate.addExtension(new Fast());
1759 }
1760 return authenticate;
1761 }
1762
1763 private void prepareForResume(final String streamId) {
1764 this.mSmCatchupMessageCounter.set(0);
1765 this.mWaitingForSmCatchup.set(true);
1766 this.pendingResumeId.push(streamId);
1767 }
1768
1769 private Bind generateBindRequest(final Collection<String> bindFeatures) {
1770 Log.d(Config.LOGTAG, "inline bind features: " + bindFeatures);
1771 final var bind = new Bind();
1772 bind.setTag(BuildConfig.APP_NAME);
1773 if (bindFeatures.contains(Namespace.CARBONS)) {
1774 bind.addExtension(new im.conversations.android.xmpp.model.carbons.Enable());
1775 }
1776 if (bindFeatures.contains(Namespace.STREAM_MANAGEMENT)) {
1777 bind.addExtension(new Enable());
1778 }
1779 return bind;
1780 }
1781
1782 private void register() {
1783 final String preAuth = account.getKey(Account.KEY_PRE_AUTH_REGISTRATION_TOKEN);
1784 if (preAuth != null && features.invite()) {
1785 final Iq preAuthRequest = new Iq(Iq.Type.SET);
1786 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
1787 sendUnmodifiedIqPacket(
1788 preAuthRequest,
1789 (response) -> {
1790 if (response.getType() == Iq.Type.RESULT) {
1791 sendRegistryRequest();
1792 } else {
1793 final String error = response.getErrorCondition();
1794 Log.d(
1795 Config.LOGTAG,
1796 account.getJid().asBareJid()
1797 + ": failed to pre auth. "
1798 + error);
1799 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
1800 }
1801 },
1802 true);
1803 } else {
1804 sendRegistryRequest();
1805 }
1806 }
1807
1808 private void sendRegistryRequest() {
1809 final Iq register = new Iq(Iq.Type.GET);
1810 register.query(Namespace.REGISTER);
1811 register.setTo(account.getDomain());
1812 sendUnmodifiedIqPacket(
1813 register,
1814 (packet) -> {
1815 if (packet.getType() == Iq.Type.TIMEOUT) {
1816 return;
1817 }
1818 if (packet.getType() == Iq.Type.ERROR) {
1819 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1820 }
1821 final Element query = packet.query(Namespace.REGISTER);
1822 if (query.hasChild("username") && (query.hasChild("password"))) {
1823 final Iq register1 = new Iq(Iq.Type.SET);
1824 final Element username =
1825 new Element("username").setContent(account.getUsername());
1826 final Element password =
1827 new Element("password").setContent(account.getPassword());
1828 register1.query(Namespace.REGISTER).addChild(username);
1829 register1.query().addChild(password);
1830 register1.setFrom(account.getJid().asBareJid());
1831 sendUnmodifiedIqPacket(register1, this::processRegistrationResponse, true);
1832 } else if (query.hasChild("x", Namespace.DATA)) {
1833 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
1834 final Element blob = query.findChild("data", "urn:xmpp:bob");
1835 final String id = packet.getId();
1836 InputStream is;
1837 if (blob != null) {
1838 try {
1839 final String base64Blob = blob.getContent();
1840 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
1841 is = new ByteArrayInputStream(strBlob);
1842 } catch (Exception e) {
1843 is = null;
1844 }
1845 } else {
1846 final boolean useTor =
1847 mXmppConnectionService.useTorToConnect() || account.isOnion();
1848 try {
1849 final String url = data.getValue("url");
1850 final String fallbackUrl = data.getValue("captcha-fallback-url");
1851 if (url != null) {
1852 is = HttpConnectionManager.open(url, useTor);
1853 } else if (fallbackUrl != null) {
1854 is = HttpConnectionManager.open(fallbackUrl, useTor);
1855 } else {
1856 is = null;
1857 }
1858 } catch (final IOException e) {
1859 Log.d(
1860 Config.LOGTAG,
1861 account.getJid().asBareJid() + ": unable to fetch captcha",
1862 e);
1863 is = null;
1864 }
1865 }
1866
1867 if (is != null) {
1868 Bitmap captcha = BitmapFactory.decodeStream(is);
1869 try {
1870 if (mXmppConnectionService.displayCaptchaRequest(
1871 account, id, data, captcha)) {
1872 return;
1873 }
1874 } catch (Exception e) {
1875 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1876 }
1877 }
1878 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1879 } else if (query.hasChild("instructions")
1880 || query.hasChild("x", Namespace.OOB)) {
1881 final String instructions = query.findChildContent("instructions");
1882 final Element oob = query.findChild("x", Namespace.OOB);
1883 final String url = oob == null ? null : oob.findChildContent("url");
1884 if (url != null) {
1885 setAccountCreationFailed(url);
1886 } else if (instructions != null) {
1887 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
1888 if (matcher.find()) {
1889 setAccountCreationFailed(
1890 instructions.substring(matcher.start(), matcher.end()));
1891 }
1892 }
1893 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1894 }
1895 },
1896 true);
1897 }
1898
1899 public void sendCreateAccountWithCaptchaPacket(final String id, final Data data) {
1900 final Iq request = IqGenerator.generateCreateAccountWithCaptcha(account, id, data);
1901 this.sendUnmodifiedIqPacket(request, this::processRegistrationResponse, true);
1902 }
1903
1904 private void processRegistrationResponse(final Iq response) {
1905 if (response.getType() == Iq.Type.RESULT) {
1906 account.setOption(Account.OPTION_REGISTER, false);
1907 Log.d(
1908 Config.LOGTAG,
1909 account.getJid().asBareJid()
1910 + ": successfully registered new account on server");
1911 throw new StateChangingError(Account.State.REGISTRATION_SUCCESSFUL);
1912 } else {
1913 final Account.State state = getRegistrationFailedState(response);
1914 throw new StateChangingError(state);
1915 }
1916 }
1917
1918 @NonNull
1919 private static Account.State getRegistrationFailedState(final Iq response) {
1920 final List<String> PASSWORD_TOO_WEAK_MESSAGES =
1921 Arrays.asList("The password is too weak", "Please use a longer password.");
1922 final var error = response.getError();
1923 final var condition = error == null ? null : error.getCondition();
1924 final Account.State state;
1925 if (condition instanceof Condition.Conflict) {
1926 state = Account.State.REGISTRATION_CONFLICT;
1927 } else if (condition instanceof Condition.ResourceConstraint) {
1928 state = Account.State.REGISTRATION_PLEASE_WAIT;
1929 } else if (condition instanceof Condition.NotAcceptable
1930 && PASSWORD_TOO_WEAK_MESSAGES.contains(error.getTextAsString())) {
1931 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
1932 } else {
1933 state = Account.State.REGISTRATION_FAILED;
1934 }
1935 return state;
1936 }
1937
1938 private void setAccountCreationFailed(final String url) {
1939 final HttpUrl httpUrl = url == null ? null : HttpUrl.parse(url);
1940 if (httpUrl != null && httpUrl.isHttps()) {
1941 this.redirectionUrl = httpUrl;
1942 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1943 }
1944 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1945 }
1946
1947 public HttpUrl getRedirectionUrl() {
1948 return this.redirectionUrl;
1949 }
1950
1951 public void resetEverything() {
1952 resetAttemptCount(true);
1953 resetStreamId();
1954 clearIqCallbacks();
1955 synchronized (this.mStanzaQueue) {
1956 this.stanzasSent = 0;
1957 this.mStanzaQueue.clear();
1958 }
1959 this.redirectionUrl = null;
1960 synchronized (this.disco) {
1961 disco.clear();
1962 }
1963 synchronized (this.commands) {
1964 this.commands.clear();
1965 }
1966 this.loginInfo = null;
1967 }
1968
1969 private void sendBindRequest() {
1970 try {
1971 mXmppConnectionService.restoredFromDatabaseLatch.await();
1972 } catch (InterruptedException e) {
1973 Log.d(
1974 Config.LOGTAG,
1975 account.getJid().asBareJid()
1976 + ": interrupted while waiting for DB restore during bind");
1977 return;
1978 }
1979 clearIqCallbacks();
1980 if (account.getJid().isBareJid()) {
1981 account.setResource(createNewResource());
1982 } else {
1983 fixResource(mXmppConnectionService, account);
1984 }
1985 final Iq iq = new Iq(Iq.Type.SET);
1986 final String resource =
1987 Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND
1988 ? CryptoHelper.random(9)
1989 : account.getResource();
1990 iq.addExtension(new im.conversations.android.xmpp.model.bind.Bind()).setResource(resource);
1991 this.sendUnmodifiedIqPacket(
1992 iq,
1993 (packet) -> {
1994 if (packet.getType() == Iq.Type.TIMEOUT) {
1995 return;
1996 }
1997 final var bind =
1998 packet.getExtension(
1999 im.conversations.android.xmpp.model.bind.Bind.class);
2000 if (bind != null && packet.getType() == Iq.Type.RESULT) {
2001 isBound = true;
2002 final Jid assignedJid = bind.getJid();
2003 checkAssignedDomain(assignedJid);
2004 if (account.setJid(assignedJid)) {
2005 Log.d(
2006 Config.LOGTAG,
2007 account.getJid().asBareJid()
2008 + ": jid changed during bind. updating database");
2009 mXmppConnectionService.databaseBackend.updateAccount(account);
2010 }
2011 if (streamFeatures.hasChild("session")
2012 && !streamFeatures.findChild("session").hasChild("optional")) {
2013 sendStartSession();
2014 } else {
2015 final boolean waitForDisco = enableStreamManagement();
2016 sendPostBindInitialization(waitForDisco, false);
2017 }
2018 } else {
2019 Log.d(
2020 Config.LOGTAG,
2021 account.getJid()
2022 + ": disconnecting because of bind failure ("
2023 + packet);
2024 final var error = packet.getError();
2025 // TODO error.is(Condition)
2026 if (packet.getType() == Iq.Type.ERROR
2027 && error != null
2028 && error.hasChild("conflict")) {
2029 account.setResource(createNewResource());
2030 }
2031 throw new StateChangingError(Account.State.BIND_FAILURE);
2032 }
2033 },
2034 true);
2035 }
2036
2037 private void clearIqCallbacks() {
2038 final Iq failurePacket = new Iq(Iq.Type.TIMEOUT);
2039 final ArrayList<Consumer<Iq>> callbacks = new ArrayList<>();
2040 synchronized (this.packetCallbacks) {
2041 if (this.packetCallbacks.isEmpty()) {
2042 return;
2043 }
2044 Log.d(
2045 Config.LOGTAG,
2046 account.getJid().asBareJid()
2047 + ": clearing "
2048 + this.packetCallbacks.size()
2049 + " iq callbacks");
2050 final var iterator = this.packetCallbacks.values().iterator();
2051 while (iterator.hasNext()) {
2052 final var entry = iterator.next();
2053 callbacks.add(entry.second);
2054 iterator.remove();
2055 }
2056 }
2057 for (final var callback : callbacks) {
2058 try {
2059 callback.accept(failurePacket);
2060 } catch (StateChangingError error) {
2061 Log.d(
2062 Config.LOGTAG,
2063 account.getJid().asBareJid()
2064 + ": caught StateChangingError("
2065 + error.state.toString()
2066 + ") while clearing callbacks");
2067 // ignore
2068 }
2069 }
2070 Log.d(
2071 Config.LOGTAG,
2072 account.getJid().asBareJid()
2073 + ": done clearing iq callbacks. "
2074 + this.packetCallbacks.size()
2075 + " left");
2076 }
2077
2078 public void sendDiscoTimeout() {
2079 if (mWaitForDisco.compareAndSet(true, false)) {
2080 Log.d(
2081 Config.LOGTAG,
2082 account.getJid().asBareJid() + ": finalizing bind after disco timeout");
2083 finalizeBind();
2084 }
2085 }
2086
2087 private void sendStartSession() {
2088 Log.d(
2089 Config.LOGTAG,
2090 account.getJid().asBareJid() + ": sending legacy session to outdated server");
2091 final Iq startSession = new Iq(Iq.Type.SET);
2092 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
2093 this.sendUnmodifiedIqPacket(
2094 startSession,
2095 (packet) -> {
2096 if (packet.getType() == Iq.Type.RESULT) {
2097 final boolean waitForDisco = enableStreamManagement();
2098 sendPostBindInitialization(waitForDisco, false);
2099 } else if (packet.getType() != Iq.Type.TIMEOUT) {
2100 throw new StateChangingError(Account.State.SESSION_FAILURE);
2101 }
2102 },
2103 true);
2104 }
2105
2106 private boolean enableStreamManagement() {
2107 final boolean streamManagement = this.streamFeatures.streamManagement();
2108 if (streamManagement) {
2109 synchronized (this.mStanzaQueue) {
2110 final var enable = new Enable();
2111 tagWriter.writeStanzaAsync(enable);
2112 stanzasSent = 0;
2113 mStanzaQueue.clear();
2114 }
2115 return true;
2116 } else {
2117 return false;
2118 }
2119 }
2120
2121 private void sendPostBindInitialization(
2122 final boolean waitForDisco, final boolean carbonsEnabled) {
2123 features.carbonsEnabled = carbonsEnabled;
2124 features.blockListRequested = false;
2125 synchronized (this.disco) {
2126 this.disco.clear();
2127 }
2128 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
2129 mPendingServiceDiscoveries.set(0);
2130 mWaitForDisco.set(waitForDisco);
2131 this.lastDiscoStarted = SystemClock.elapsedRealtime();
2132 mXmppConnectionService.scheduleWakeUpCall(
2133 Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
2134 final Element caps = streamFeatures.findChild("c");
2135 final String hash = caps == null ? null : caps.getAttribute("hash");
2136 final String ver = caps == null ? null : caps.getAttribute("ver");
2137 ServiceDiscoveryResult discoveryResult = null;
2138 if (hash != null && ver != null) {
2139 discoveryResult =
2140 mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
2141 }
2142 final boolean requestDiscoItemsFirst =
2143 !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
2144 if (requestDiscoItemsFirst) {
2145 sendServiceDiscoveryItems(account.getDomain());
2146 }
2147 if (discoveryResult == null) {
2148 sendServiceDiscoveryInfo(account.getDomain());
2149 } else {
2150 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
2151 disco.put(account.getDomain(), discoveryResult);
2152 }
2153 final var features = getFeatures();
2154 if (!features.bind2()) {
2155 discoverMamPreferences();
2156 }
2157 sendServiceDiscoveryInfo(account.getJid().asBareJid());
2158 if (!requestDiscoItemsFirst) {
2159 sendServiceDiscoveryItems(account.getDomain());
2160 }
2161
2162 if (!mWaitForDisco.get()) {
2163 finalizeBind();
2164 }
2165 this.lastSessionStarted = SystemClock.elapsedRealtime();
2166 }
2167
2168 private void sendServiceDiscoveryInfo(final Jid jid) {
2169 mPendingServiceDiscoveries.incrementAndGet();
2170 final Iq iq = new Iq(Iq.Type.GET);
2171 iq.setTo(jid);
2172 iq.query("http://jabber.org/protocol/disco#info");
2173 this.sendIqPacket(
2174 iq,
2175 (packet) -> {
2176 if (packet.getType() == Iq.Type.RESULT) {
2177 boolean advancedStreamFeaturesLoaded;
2178 synchronized (XmppConnection.this.disco) {
2179 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
2180 if (jid.equals(account.getDomain())) {
2181 mXmppConnectionService.databaseBackend.insertDiscoveryResult(
2182 result);
2183 }
2184 disco.put(jid, result);
2185 advancedStreamFeaturesLoaded =
2186 disco.containsKey(account.getDomain())
2187 && disco.containsKey(account.getJid().asBareJid());
2188 }
2189 if (advancedStreamFeaturesLoaded
2190 && (jid.equals(account.getDomain())
2191 || jid.equals(account.getJid().asBareJid()))) {
2192 enableAdvancedStreamFeatures();
2193 }
2194 } else if (packet.getType() == Iq.Type.ERROR) {
2195 Log.d(
2196 Config.LOGTAG,
2197 account.getJid().asBareJid()
2198 + ": could not query disco info for "
2199 + jid.toString());
2200 final boolean serverOrAccount =
2201 jid.equals(account.getDomain())
2202 || jid.equals(account.getJid().asBareJid());
2203 final boolean advancedStreamFeaturesLoaded;
2204 if (serverOrAccount) {
2205 synchronized (XmppConnection.this.disco) {
2206 disco.put(jid, ServiceDiscoveryResult.empty());
2207 advancedStreamFeaturesLoaded =
2208 disco.containsKey(account.getDomain())
2209 && disco.containsKey(account.getJid().asBareJid());
2210 }
2211 } else {
2212 advancedStreamFeaturesLoaded = false;
2213 }
2214 if (advancedStreamFeaturesLoaded) {
2215 enableAdvancedStreamFeatures();
2216 }
2217 }
2218 if (packet.getType() != Iq.Type.TIMEOUT) {
2219 if (mPendingServiceDiscoveries.decrementAndGet() == 0
2220 && mWaitForDisco.compareAndSet(true, false)) {
2221 finalizeBind();
2222 }
2223 }
2224 });
2225 }
2226
2227 private void discoverMamPreferences() {
2228 final Iq request = new Iq(Iq.Type.GET);
2229 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
2230 sendIqPacket(
2231 request,
2232 (response) -> {
2233 if (response.getType() == Iq.Type.RESULT) {
2234 Element prefs =
2235 response.findChild(
2236 "prefs", MessageArchiveService.Version.MAM_2.namespace);
2237 isMamPreferenceAlways =
2238 "always"
2239 .equals(
2240 prefs == null
2241 ? null
2242 : prefs.getAttribute("default"));
2243 }
2244 });
2245 }
2246
2247 private void discoverCommands() {
2248 final Iq request = new Iq(Iq.Type.GET);
2249 request.setTo(account.getDomain());
2250 request.addChild("query", Namespace.DISCO_ITEMS).setAttribute("node", Namespace.COMMANDS);
2251 sendIqPacket(
2252 request,
2253 (response) -> {
2254 if (response.getType() == Iq.Type.RESULT) {
2255 final Element query = response.findChild("query", Namespace.DISCO_ITEMS);
2256 if (query == null) {
2257 return;
2258 }
2259 final HashMap<String, Jid> commands = new HashMap<>();
2260 for (final Element child : query.getChildren()) {
2261 if ("item".equals(child.getName())) {
2262 final String node = child.getAttribute("node");
2263 final Jid jid = child.getAttributeAsJid("jid");
2264 if (node != null && jid != null) {
2265 commands.put(node, jid);
2266 }
2267 }
2268 }
2269 synchronized (this.commands) {
2270 this.commands.clear();
2271 this.commands.putAll(commands);
2272 }
2273 }
2274 });
2275 }
2276
2277 public boolean isMamPreferenceAlways() {
2278 return isMamPreferenceAlways;
2279 }
2280
2281 private void finalizeBind() {
2282 this.offlineMessagesRetrieved = false;
2283 this.bindListener.run();
2284 this.changeStatusToOnline();
2285 }
2286
2287 private void enableAdvancedStreamFeatures() {
2288 if (getFeatures().blocking() && !features.blockListRequested) {
2289 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
2290 this.sendIqPacket(getIqGenerator().generateGetBlockList(), unregisteredIqListener);
2291 }
2292 for (final OnAdvancedStreamFeaturesLoaded listener :
2293 advancedStreamFeaturesLoadedListeners) {
2294 listener.onAdvancedStreamFeaturesAvailable(account);
2295 }
2296 if (getFeatures().carbons() && !features.carbonsEnabled) {
2297 sendEnableCarbons();
2298 }
2299 if (getFeatures().commands()) {
2300 discoverCommands();
2301 }
2302 }
2303
2304 private void sendServiceDiscoveryItems(final Jid server) {
2305 mPendingServiceDiscoveries.incrementAndGet();
2306 final Iq iq = new Iq(Iq.Type.GET);
2307 iq.setTo(server.getDomain());
2308 iq.query("http://jabber.org/protocol/disco#items");
2309 this.sendIqPacket(
2310 iq,
2311 (packet) -> {
2312 if (packet.getType() == Iq.Type.RESULT) {
2313 final HashSet<Jid> items = new HashSet<>();
2314 final List<Element> elements = packet.query().getChildren();
2315 for (final Element element : elements) {
2316 if (element.getName().equals("item")) {
2317 final Jid jid =
2318 InvalidJid.getNullForInvalid(
2319 element.getAttributeAsJid("jid"));
2320 if (jid != null && !jid.equals(account.getDomain())) {
2321 items.add(jid);
2322 }
2323 }
2324 }
2325 for (Jid jid : items) {
2326 sendServiceDiscoveryInfo(jid);
2327 }
2328 } else {
2329 Log.d(
2330 Config.LOGTAG,
2331 account.getJid().asBareJid()
2332 + ": could not query disco items of "
2333 + server);
2334 }
2335 if (packet.getType() != Iq.Type.TIMEOUT) {
2336 if (mPendingServiceDiscoveries.decrementAndGet() == 0
2337 && mWaitForDisco.compareAndSet(true, false)) {
2338 finalizeBind();
2339 }
2340 }
2341 });
2342 }
2343
2344 private void sendEnableCarbons() {
2345 final Iq iq = new Iq(Iq.Type.SET);
2346 iq.addChild("enable", Namespace.CARBONS);
2347 this.sendIqPacket(
2348 iq,
2349 (packet) -> {
2350 if (packet.getType() == Iq.Type.RESULT) {
2351 Log.d(
2352 Config.LOGTAG,
2353 account.getJid().asBareJid() + ": successfully enabled carbons");
2354 features.carbonsEnabled = true;
2355 } else {
2356 Log.d(
2357 Config.LOGTAG,
2358 account.getJid().asBareJid()
2359 + ": could not enable carbons "
2360 + packet);
2361 }
2362 });
2363 }
2364
2365 private void processStreamError(final StreamError streamError) throws IOException {
2366 final var loginInfo = this.loginInfo;
2367 final var isSecureLoggedIn = isSecure() && LoginInfo.isSuccess(loginInfo);
2368 if (isSecureLoggedIn && streamError.hasChild("conflict")) {
2369 if (loginInfo.saslVersion == SaslMechanism.Version.SASL_2) {
2370 this.appSettings.resetInstallationId();
2371 }
2372 account.setResource(createNewResource());
2373 Log.d(
2374 Config.LOGTAG,
2375 account.getJid().asBareJid()
2376 + ": switching resource due to conflict ("
2377 + account.getResource()
2378 + ")");
2379 throw new IOException("Closed stream due to resource conflict");
2380 } else if (streamError.hasChild("host-unknown")) {
2381 throw new StateChangingException(Account.State.HOST_UNKNOWN);
2382 } else if (streamError.hasChild("policy-violation")) {
2383 this.lastConnect = SystemClock.elapsedRealtime();
2384 final String text = streamError.findChildContent("text");
2385 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": policy violation. " + text);
2386 if (isSecureLoggedIn) {
2387 failPendingMessages(text);
2388 }
2389 throw new StateChangingException(Account.State.POLICY_VIOLATION);
2390 } else if (streamError.hasChild("see-other-host")) {
2391 final String seeOtherHost = streamError.findChildContent("see-other-host");
2392 final Resolver.Result currentResolverResult = this.currentResolverResult;
2393 if (Strings.isNullOrEmpty(seeOtherHost) || currentResolverResult == null) {
2394 Log.d(
2395 Config.LOGTAG,
2396 account.getJid().asBareJid() + ": stream error " + streamError);
2397 throw new StateChangingException(Account.State.STREAM_ERROR);
2398 }
2399 Log.d(
2400 Config.LOGTAG,
2401 account.getJid().asBareJid()
2402 + ": see other host: "
2403 + seeOtherHost
2404 + " "
2405 + currentResolverResult);
2406 final Resolver.Result seeOtherResult = currentResolverResult.seeOtherHost(seeOtherHost);
2407 if (seeOtherResult != null) {
2408 this.seeOtherHostResolverResult = seeOtherResult;
2409 throw new StateChangingException(Account.State.SEE_OTHER_HOST);
2410 } else {
2411 throw new StateChangingException(Account.State.STREAM_ERROR);
2412 }
2413 } else {
2414 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError);
2415 throw new StateChangingException(Account.State.STREAM_ERROR);
2416 }
2417 }
2418
2419 private void failPendingMessages(final String error) {
2420 synchronized (this.mStanzaQueue) {
2421 for (int i = 0; i < mStanzaQueue.size(); ++i) {
2422 final Stanza stanza = mStanzaQueue.valueAt(i);
2423 if (stanza instanceof im.conversations.android.xmpp.model.stanza.Message packet) {
2424 final String id = packet.getId();
2425 final Jid to = packet.getTo();
2426 mXmppConnectionService.markMessage(
2427 account, to.asBareJid(), id, Message.STATUS_SEND_FAILED, error);
2428 }
2429 }
2430 }
2431 }
2432
2433 private boolean establishStream(final SSLSockets.Version sslVersion)
2434 throws IOException, InterruptedException {
2435 final boolean secureConnection = sslVersion != SSLSockets.Version.NONE;
2436 final SaslMechanism quickStartMechanism;
2437 if (secureConnection) {
2438 quickStartMechanism =
2439 SaslMechanism.ensureAvailable(
2440 account.getQuickStartMechanism(),
2441 sslVersion,
2442 appSettings.isRequireChannelBinding());
2443 } else {
2444 quickStartMechanism = null;
2445 }
2446 if (secureConnection
2447 && Config.QUICKSTART_ENABLED
2448 && quickStartMechanism != null
2449 && account.isOptionSet(Account.OPTION_QUICKSTART_AVAILABLE)) {
2450 mXmppConnectionService.restoredFromDatabaseLatch.await();
2451 this.loginInfo =
2452 new LoginInfo(
2453 quickStartMechanism,
2454 SaslMechanism.Version.SASL_2,
2455 Bind2.QUICKSTART_FEATURES);
2456 final boolean usingFast = quickStartMechanism instanceof HashedToken;
2457 final AuthenticationRequest authenticate =
2458 generateAuthenticationRequest(
2459 quickStartMechanism.getClientFirstMessage(sslSocketOrNull(this.socket)),
2460 usingFast);
2461 authenticate.setMechanism(quickStartMechanism);
2462 sendStartStream(true, false);
2463 synchronized (this.mStanzaQueue) {
2464 this.stanzasSentBeforeAuthentication = this.stanzasSent;
2465 tagWriter.writeElement(authenticate);
2466 }
2467 Log.d(
2468 Config.LOGTAG,
2469 account.getJid().toString()
2470 + ": quick start with "
2471 + quickStartMechanism.getMechanism());
2472 return true;
2473 } else {
2474 sendStartStream(secureConnection, true);
2475 return false;
2476 }
2477 }
2478
2479 private void sendStartStream(final boolean from, final boolean flush) throws IOException {
2480 final Tag stream = Tag.start("stream:stream");
2481 stream.setAttribute("to", account.getServer());
2482 if (from) {
2483 stream.setAttribute("from", account.getJid().asBareJid().toEscapedString());
2484 }
2485 stream.setAttribute("version", "1.0");
2486 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
2487 stream.setAttribute("xmlns", Namespace.JABBER_CLIENT);
2488 stream.setAttribute("xmlns:stream", Namespace.STREAMS);
2489 tagWriter.writeTag(stream, flush);
2490 }
2491
2492 private static String createNewResource() {
2493 return String.format("%s.%s", BuildConfig.APP_NAME, CryptoHelper.random(3));
2494 }
2495
2496 public String sendIqPacket(final Iq packet, final Consumer<Iq> callback) {
2497 packet.setFrom(account.getJid());
2498 return this.sendUnmodifiedIqPacket(packet, callback, false);
2499 }
2500
2501 public synchronized String sendUnmodifiedIqPacket(
2502 final Iq packet, final Consumer<Iq> callback, boolean force) {
2503 // TODO if callback != null verify that type is get or set
2504 if (packet.getId() == null) {
2505 packet.setId(CryptoHelper.random(9));
2506 }
2507 if (callback != null) {
2508 synchronized (this.packetCallbacks) {
2509 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
2510 }
2511 }
2512 this.sendPacket(packet, force);
2513 return packet.getId();
2514 }
2515
2516 public void sendMessagePacket(final im.conversations.android.xmpp.model.stanza.Message packet) {
2517 this.sendPacket(packet);
2518 }
2519
2520 public void sendPresencePacket(final Presence packet) {
2521 this.sendPacket(packet);
2522 }
2523
2524 private synchronized void sendPacket(final StreamElement packet) {
2525 sendPacket(packet, false);
2526 }
2527
2528 private synchronized void sendPacket(final StreamElement packet, final boolean force) {
2529 if (stanzasSent == Integer.MAX_VALUE) {
2530 resetStreamId();
2531 disconnect(true);
2532 return;
2533 }
2534 synchronized (this.mStanzaQueue) {
2535 if (force || isBound) {
2536 tagWriter.writeStanzaAsync(packet);
2537 } else {
2538 Log.d(
2539 Config.LOGTAG,
2540 account.getJid().asBareJid()
2541 + " do not write stanza to unbound stream "
2542 + packet.toString());
2543 }
2544 if (packet instanceof Stanza stanza) {
2545 if (this.mStanzaQueue.size() != 0) {
2546 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
2547 if (currentHighestKey != stanzasSent) {
2548 throw new AssertionError("Stanza count messed up");
2549 }
2550 }
2551
2552 ++stanzasSent;
2553 if (Config.EXTENDED_SM_LOGGING) {
2554 Log.d(
2555 Config.LOGTAG,
2556 account.getJid().asBareJid()
2557 + ": counting outbound "
2558 + packet.getName()
2559 + " as #"
2560 + stanzasSent);
2561 }
2562 this.mStanzaQueue.append(stanzasSent, stanza);
2563 if (stanza instanceof im.conversations.android.xmpp.model.stanza.Message
2564 && stanza.getId() != null
2565 && inSmacksSession) {
2566 if (Config.EXTENDED_SM_LOGGING) {
2567 Log.d(
2568 Config.LOGTAG,
2569 account.getJid().asBareJid()
2570 + ": requesting ack for message stanza #"
2571 + stanzasSent);
2572 }
2573 tagWriter.writeStanzaAsync(new Request());
2574 }
2575 }
2576 }
2577 }
2578
2579 public void sendPing() {
2580 if (!r()) {
2581 final Iq iq = new Iq(Iq.Type.GET);
2582 iq.setFrom(account.getJid());
2583 iq.addChild("ping", Namespace.PING);
2584 this.sendIqPacket(iq, null);
2585 }
2586 this.lastPingSent = SystemClock.elapsedRealtime();
2587 }
2588
2589 public void setOnJinglePacketReceivedListener(final OnJinglePacketReceived listener) {
2590 this.jingleListener = listener;
2591 }
2592
2593 public void setOnStatusChangedListener(final OnStatusChanged listener) {
2594 this.statusListener = listener;
2595 }
2596
2597 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
2598 this.acknowledgedListener = listener;
2599 }
2600
2601 public void addOnAdvancedStreamFeaturesAvailableListener(
2602 final OnAdvancedStreamFeaturesLoaded listener) {
2603 this.advancedStreamFeaturesLoadedListeners.add(listener);
2604 }
2605
2606 private void forceCloseSocket() {
2607 FileBackend.close(this.socket);
2608 FileBackend.close(this.tagReader);
2609 }
2610
2611 public void interrupt() {
2612 if (this.mThread != null) {
2613 this.mThread.interrupt();
2614 }
2615 }
2616
2617 public void disconnect(final boolean force) {
2618 interrupt();
2619 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
2620 if (force) {
2621 forceCloseSocket();
2622 } else {
2623 final TagWriter currentTagWriter = this.tagWriter;
2624 if (currentTagWriter.isActive()) {
2625 currentTagWriter.finish();
2626 final Socket currentSocket = this.socket;
2627 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
2628 try {
2629 currentTagWriter.await(1, TimeUnit.SECONDS);
2630 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
2631 currentTagWriter.writeTag(Tag.end("stream:stream"));
2632 if (streamCountDownLatch != null) {
2633 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
2634 Log.d(
2635 Config.LOGTAG,
2636 account.getJid().asBareJid() + ": remote ended stream");
2637 } else {
2638 Log.d(
2639 Config.LOGTAG,
2640 account.getJid().asBareJid()
2641 + ": remote has not closed socket. force closing");
2642 }
2643 }
2644 } catch (InterruptedException e) {
2645 Log.d(
2646 Config.LOGTAG,
2647 account.getJid().asBareJid()
2648 + ": interrupted while gracefully closing stream");
2649 } catch (final IOException e) {
2650 Log.d(
2651 Config.LOGTAG,
2652 account.getJid().asBareJid()
2653 + ": io exception during disconnect ("
2654 + e.getMessage()
2655 + ")");
2656 } finally {
2657 FileBackend.close(currentSocket);
2658 }
2659 } else {
2660 forceCloseSocket();
2661 }
2662 }
2663 }
2664
2665 private void resetStreamId() {
2666 this.pendingResumeId.clear();
2667 this.streamId = null;
2668 this.boundStreamFeatures = null;
2669 }
2670
2671 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
2672 synchronized (this.disco) {
2673 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
2674 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
2675 if (cursor.getValue().getFeatures().contains(feature)) {
2676 items.add(cursor);
2677 }
2678 }
2679 return items;
2680 }
2681 }
2682
2683 public Jid findDiscoItemByFeature(final String feature) {
2684 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
2685 if (items.size() >= 1) {
2686 return items.get(0).getKey();
2687 }
2688 return null;
2689 }
2690
2691 public boolean r() {
2692 if (getFeatures().sm()) {
2693 this.tagWriter.writeStanzaAsync(new Request());
2694 return true;
2695 } else {
2696 return false;
2697 }
2698 }
2699
2700 public List<String> getMucServersWithholdAccount() {
2701 final List<String> servers = getMucServers();
2702 servers.remove(account.getDomain().toEscapedString());
2703 return servers;
2704 }
2705
2706 public List<String> getMucServers() {
2707 List<String> servers = new ArrayList<>();
2708 synchronized (this.disco) {
2709 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
2710 final ServiceDiscoveryResult value = cursor.getValue();
2711 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
2712 && value.hasIdentity("conference", "text")
2713 && !value.getFeatures().contains("jabber:iq:gateway")
2714 && !value.hasIdentity("conference", "irc")) {
2715 servers.add(cursor.getKey().toString());
2716 }
2717 }
2718 }
2719 return servers;
2720 }
2721
2722 public String getMucServer() {
2723 List<String> servers = getMucServers();
2724 return servers.size() > 0 ? servers.get(0) : null;
2725 }
2726
2727 public int getTimeToNextAttempt(final boolean aggressive) {
2728 final int interval;
2729 if (aggressive) {
2730 interval = Math.min((int) (3 * Math.pow(1.3, attempt)), 60);
2731 } else {
2732 final int additionalTime =
2733 account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
2734 interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
2735 }
2736 final int secondsSinceLast =
2737 (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
2738 return interval - secondsSinceLast;
2739 }
2740
2741 public int getAttempt() {
2742 return this.attempt;
2743 }
2744
2745 public Features getFeatures() {
2746 return this.features;
2747 }
2748
2749 public long getLastSessionEstablished() {
2750 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
2751 return System.currentTimeMillis() - diff;
2752 }
2753
2754 public long getLastConnect() {
2755 return this.lastConnect;
2756 }
2757
2758 public long getLastPingSent() {
2759 return this.lastPingSent;
2760 }
2761
2762 public long getLastDiscoStarted() {
2763 return this.lastDiscoStarted;
2764 }
2765
2766 public long getLastPacketReceived() {
2767 return this.lastPacketReceived;
2768 }
2769
2770 public void sendActive() {
2771 this.sendPacket(new Active());
2772 }
2773
2774 public void sendInactive() {
2775 this.sendPacket(new Inactive());
2776 }
2777
2778 public void resetAttemptCount(boolean resetConnectTime) {
2779 this.attempt = 0;
2780 if (resetConnectTime) {
2781 this.lastConnect = 0;
2782 }
2783 }
2784
2785 public void setInteractive(boolean interactive) {
2786 this.mInteractive = interactive;
2787 }
2788
2789 private IqGenerator getIqGenerator() {
2790 return mXmppConnectionService.getIqGenerator();
2791 }
2792
2793 public void trackOfflineMessageRetrieval(boolean trackOfflineMessageRetrieval) {
2794 if (trackOfflineMessageRetrieval) {
2795 final Iq iqPing = new Iq(Iq.Type.GET);
2796 iqPing.addChild("ping", Namespace.PING);
2797 this.sendIqPacket(
2798 iqPing,
2799 (response) -> {
2800 Log.d(
2801 Config.LOGTAG,
2802 account.getJid().asBareJid()
2803 + ": got ping response after sending initial presence");
2804 XmppConnection.this.offlineMessagesRetrieved = true;
2805 });
2806 } else {
2807 this.offlineMessagesRetrieved = true;
2808 }
2809 }
2810
2811 public boolean isOfflineMessagesRetrieved() {
2812 return this.offlineMessagesRetrieved;
2813 }
2814
2815 public void fetchRoster() {
2816 final Iq iqPacket = new Iq(Iq.Type.GET);
2817 final var version = account.getRosterVersion();
2818 if (Strings.isNullOrEmpty(account.getRosterVersion())) {
2819 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": fetching roster");
2820 } else {
2821 Log.d(
2822 Config.LOGTAG,
2823 account.getJid().asBareJid() + ": fetching roster version " + version);
2824 }
2825 iqPacket.query(Namespace.ROSTER).setAttribute("ver", version);
2826 sendIqPacket(iqPacket, unregisteredIqListener);
2827 }
2828
2829 private class MyKeyManager implements X509KeyManager {
2830 @Override
2831 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
2832 return account.getPrivateKeyAlias();
2833 }
2834
2835 @Override
2836 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
2837 return null;
2838 }
2839
2840 @Override
2841 public X509Certificate[] getCertificateChain(String alias) {
2842 Log.d(Config.LOGTAG, "getting certificate chain");
2843 try {
2844 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
2845 } catch (final Exception e) {
2846 Log.d(Config.LOGTAG, "could not get certificate chain", e);
2847 return new X509Certificate[0];
2848 }
2849 }
2850
2851 @Override
2852 public String[] getClientAliases(String s, Principal[] principals) {
2853 final String alias = account.getPrivateKeyAlias();
2854 return alias != null ? new String[] {alias} : new String[0];
2855 }
2856
2857 @Override
2858 public String[] getServerAliases(String s, Principal[] principals) {
2859 return new String[0];
2860 }
2861
2862 @Override
2863 public PrivateKey getPrivateKey(String alias) {
2864 try {
2865 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
2866 } catch (Exception e) {
2867 return null;
2868 }
2869 }
2870 }
2871
2872 private static class LoginInfo {
2873 public final SaslMechanism saslMechanism;
2874 public final SaslMechanism.Version saslVersion;
2875 public final List<String> inlineBindFeatures;
2876 public final AtomicBoolean success = new AtomicBoolean(false);
2877
2878 private LoginInfo(
2879 final SaslMechanism saslMechanism,
2880 final SaslMechanism.Version saslVersion,
2881 final Collection<String> inlineBindFeatures) {
2882 Preconditions.checkNotNull(saslMechanism, "SASL Mechanism must not be null");
2883 Preconditions.checkNotNull(saslVersion, "SASL version must not be null");
2884 this.saslMechanism = saslMechanism;
2885 this.saslVersion = saslVersion;
2886 this.inlineBindFeatures =
2887 inlineBindFeatures == null
2888 ? Collections.emptyList()
2889 : ImmutableList.copyOf(inlineBindFeatures);
2890 }
2891
2892 public static SaslMechanism mechanism(final LoginInfo loginInfo) {
2893 return loginInfo == null ? null : loginInfo.saslMechanism;
2894 }
2895
2896 public void success(final String challenge, final SSLSocket sslSocket)
2897 throws SaslMechanism.AuthenticationException {
2898 final var response = this.saslMechanism.getResponse(challenge, sslSocket);
2899 if (!Strings.isNullOrEmpty(response)) {
2900 throw new SaslMechanism.AuthenticationException(
2901 "processing success yielded another response");
2902 }
2903 if (this.success.compareAndSet(false, true)) {
2904 return;
2905 }
2906 throw new SaslMechanism.AuthenticationException("Process 'success' twice");
2907 }
2908
2909 public static boolean isSuccess(final LoginInfo loginInfo) {
2910 return loginInfo != null && loginInfo.success.get();
2911 }
2912 }
2913
2914 private static class StreamId {
2915 public final String id;
2916 public final Resolver.Result location;
2917
2918 private StreamId(String id, Resolver.Result location) {
2919 this.id = id;
2920 this.location = location;
2921 }
2922
2923 @NonNull
2924 @Override
2925 public String toString() {
2926 return MoreObjects.toStringHelper(this)
2927 .add("id", id)
2928 .add("location", location)
2929 .toString();
2930 }
2931 }
2932
2933 private static class StateChangingError extends Error {
2934 private final Account.State state;
2935
2936 public StateChangingError(Account.State state) {
2937 this.state = state;
2938 }
2939 }
2940
2941 private static class StateChangingException extends IOException {
2942 private final Account.State state;
2943
2944 public StateChangingException(Account.State state) {
2945 this.state = state;
2946 }
2947 }
2948
2949 public class Features {
2950 XmppConnection connection;
2951 private boolean carbonsEnabled = false;
2952 private boolean encryptionEnabled = false;
2953 private boolean blockListRequested = false;
2954
2955 public Features(final XmppConnection connection) {
2956 this.connection = connection;
2957 }
2958
2959 private boolean hasDiscoFeature(final Jid server, final String feature) {
2960 synchronized (XmppConnection.this.disco) {
2961 final ServiceDiscoveryResult sdr = connection.disco.get(server);
2962 return sdr != null && sdr.getFeatures().contains(feature);
2963 }
2964 }
2965
2966 public boolean carbons() {
2967 return hasDiscoFeature(account.getDomain(), Namespace.CARBONS);
2968 }
2969
2970 public boolean commands() {
2971 return hasDiscoFeature(account.getDomain(), Namespace.COMMANDS);
2972 }
2973
2974 public boolean easyOnboardingInvites() {
2975 synchronized (commands) {
2976 return commands.containsKey(Namespace.EASY_ONBOARDING_INVITE);
2977 }
2978 }
2979
2980 public boolean bookmarksConversion() {
2981 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION)
2982 && pepPublishOptions();
2983 }
2984
2985 public boolean blocking() {
2986 return hasDiscoFeature(account.getDomain(), Namespace.BLOCKING);
2987 }
2988
2989 public boolean spamReporting() {
2990 return hasDiscoFeature(account.getDomain(), Namespace.REPORTING);
2991 }
2992
2993 public boolean flexibleOfflineMessageRetrieval() {
2994 return hasDiscoFeature(
2995 account.getDomain(), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
2996 }
2997
2998 public boolean register() {
2999 return hasDiscoFeature(account.getDomain(), Namespace.REGISTER);
3000 }
3001
3002 public boolean invite() {
3003 return connection.streamFeatures != null
3004 && connection.streamFeatures.hasChild("register", Namespace.INVITE);
3005 }
3006
3007 public boolean sm() {
3008 return streamId != null
3009 || (connection.streamFeatures != null
3010 && connection.streamFeatures.streamManagement());
3011 }
3012
3013 public boolean csi() {
3014 return connection.streamFeatures != null
3015 && connection.streamFeatures.clientStateIndication();
3016 }
3017
3018 public boolean pep() {
3019 synchronized (XmppConnection.this.disco) {
3020 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
3021 return info != null && info.hasIdentity("pubsub", "pep");
3022 }
3023 }
3024
3025 public boolean pepPersistent() {
3026 synchronized (XmppConnection.this.disco) {
3027 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
3028 return info != null
3029 && info.getFeatures()
3030 .contains("http://jabber.org/protocol/pubsub#persistent-items");
3031 }
3032 }
3033
3034 public boolean bind2() {
3035 final var loginInfo = XmppConnection.this.loginInfo;
3036 return loginInfo != null && !loginInfo.inlineBindFeatures.isEmpty();
3037 }
3038
3039 public boolean sasl2() {
3040 final var loginInfo = XmppConnection.this.loginInfo;
3041 return loginInfo != null && loginInfo.saslVersion == SaslMechanism.Version.SASL_2;
3042 }
3043
3044 public String loginMechanism() {
3045 final var loginInfo = XmppConnection.this.loginInfo;
3046 return loginInfo == null ? null : loginInfo.saslMechanism.getMechanism();
3047 }
3048
3049 public boolean pepPublishOptions() {
3050 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
3051 }
3052
3053 public boolean pepConfigNodeMax() {
3054 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_CONFIG_NODE_MAX);
3055 }
3056
3057 public boolean pepOmemoWhitelisted() {
3058 return hasDiscoFeature(
3059 account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
3060 }
3061
3062 public boolean mam() {
3063 return MessageArchiveService.Version.has(getAccountFeatures());
3064 }
3065
3066 public List<String> getAccountFeatures() {
3067 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
3068 return result == null ? Collections.emptyList() : result.getFeatures();
3069 }
3070
3071 public boolean push() {
3072 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
3073 || hasDiscoFeature(account.getDomain(), Namespace.PUSH);
3074 }
3075
3076 public boolean rosterVersioning() {
3077 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
3078 }
3079
3080 public void setBlockListRequested(boolean value) {
3081 this.blockListRequested = value;
3082 }
3083
3084 public boolean httpUpload(long filesize) {
3085 if (Config.DISABLE_HTTP_UPLOAD) {
3086 return false;
3087 } else {
3088 for (String namespace :
3089 new String[] {Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
3090 List<Entry<Jid, ServiceDiscoveryResult>> items =
3091 findDiscoItemsByFeature(namespace);
3092 if (items.size() > 0) {
3093 try {
3094 long maxsize =
3095 Long.parseLong(
3096 items.get(0)
3097 .getValue()
3098 .getExtendedDiscoInformation(
3099 namespace, "max-file-size"));
3100 if (filesize <= maxsize) {
3101 return true;
3102 } else {
3103 Log.d(
3104 Config.LOGTAG,
3105 account.getJid().asBareJid()
3106 + ": http upload is not available for files with"
3107 + " size "
3108 + filesize
3109 + " (max is "
3110 + maxsize
3111 + ")");
3112 return false;
3113 }
3114 } catch (Exception e) {
3115 return true;
3116 }
3117 }
3118 }
3119 return false;
3120 }
3121 }
3122
3123 public boolean useLegacyHttpUpload() {
3124 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null
3125 && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
3126 }
3127
3128 public long getMaxHttpUploadSize() {
3129 for (String namespace :
3130 new String[] {Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
3131 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
3132 if (items.size() > 0) {
3133 try {
3134 return Long.parseLong(
3135 items.get(0)
3136 .getValue()
3137 .getExtendedDiscoInformation(namespace, "max-file-size"));
3138 } catch (Exception e) {
3139 // ignored
3140 }
3141 }
3142 }
3143 return -1;
3144 }
3145
3146 public boolean stanzaIds() {
3147 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
3148 }
3149
3150 public boolean bookmarks2() {
3151 return pepPublishOptions()
3152 && pepConfigNodeMax()
3153 && hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS2_COMPAT);
3154 }
3155
3156 public boolean externalServiceDiscovery() {
3157 return hasDiscoFeature(account.getDomain(), Namespace.EXTERNAL_SERVICE_DISCOVERY);
3158 }
3159
3160 public boolean mds() {
3161 return pepPublishOptions()
3162 && pepConfigNodeMax()
3163 && Config.MESSAGE_DISPLAYED_SYNCHRONIZATION;
3164 }
3165
3166 public boolean mdsServerAssist() {
3167 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.MDS_DISPLAYED);
3168 }
3169 }
3170}