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.base.Throwables;
22import com.google.common.collect.ClassToInstanceMap;
23import com.google.common.collect.ImmutableList;
24import com.google.common.collect.Iterables;
25import com.google.common.primitives.Ints;
26import com.google.common.util.concurrent.FutureCallback;
27import com.google.common.util.concurrent.Futures;
28import com.google.common.util.concurrent.ListenableFuture;
29import com.google.common.util.concurrent.MoreExecutors;
30import com.google.common.util.concurrent.SettableFuture;
31import de.gultsch.common.Patterns;
32import eu.siacs.conversations.AppSettings;
33import eu.siacs.conversations.BuildConfig;
34import eu.siacs.conversations.Config;
35import eu.siacs.conversations.R;
36import eu.siacs.conversations.crypto.PgpDecryptionService;
37import eu.siacs.conversations.crypto.XmppDomainVerifier;
38import eu.siacs.conversations.crypto.axolotl.AxolotlService;
39import eu.siacs.conversations.crypto.sasl.ChannelBinding;
40import eu.siacs.conversations.crypto.sasl.ChannelBindingMechanism;
41import eu.siacs.conversations.crypto.sasl.DowngradeProtection;
42import eu.siacs.conversations.crypto.sasl.HashedToken;
43import eu.siacs.conversations.crypto.sasl.SaslMechanism;
44import eu.siacs.conversations.crypto.sasl.ScramMechanism;
45import eu.siacs.conversations.entities.Account;
46import eu.siacs.conversations.entities.Message;
47import eu.siacs.conversations.generator.IqGenerator;
48import eu.siacs.conversations.http.HttpConnectionManager;
49import eu.siacs.conversations.parser.IqParser;
50import eu.siacs.conversations.parser.MessageParser;
51import eu.siacs.conversations.parser.PresenceParser;
52import eu.siacs.conversations.persistance.DatabaseBackend;
53import eu.siacs.conversations.persistance.FileBackend;
54import eu.siacs.conversations.services.MemorizingTrustManager;
55import eu.siacs.conversations.services.MessageArchiveService;
56import eu.siacs.conversations.services.NotificationService;
57import eu.siacs.conversations.services.XmppConnectionService;
58import eu.siacs.conversations.ui.util.PendingItem;
59import eu.siacs.conversations.utils.AccountUtils;
60import eu.siacs.conversations.utils.CryptoHelper;
61import eu.siacs.conversations.utils.PhoneHelper;
62import eu.siacs.conversations.utils.Resolver;
63import eu.siacs.conversations.utils.SSLSockets;
64import eu.siacs.conversations.utils.SocksSocketFactory;
65import eu.siacs.conversations.utils.XmlHelper;
66import eu.siacs.conversations.xml.Element;
67import eu.siacs.conversations.xml.LocalizedContent;
68import eu.siacs.conversations.xml.Namespace;
69import eu.siacs.conversations.xml.Tag;
70import eu.siacs.conversations.xml.TagWriter;
71import eu.siacs.conversations.xml.XmlReader;
72import eu.siacs.conversations.xmpp.bind.Bind2;
73import eu.siacs.conversations.xmpp.forms.Data;
74import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
75import eu.siacs.conversations.xmpp.manager.AbstractManager;
76import eu.siacs.conversations.xmpp.manager.BlockingManager;
77import eu.siacs.conversations.xmpp.manager.CarbonsManager;
78import eu.siacs.conversations.xmpp.manager.DiscoManager;
79import eu.siacs.conversations.xmpp.manager.PingManager;
80import im.conversations.android.xmpp.Entity;
81import im.conversations.android.xmpp.IqErrorException;
82import im.conversations.android.xmpp.model.AuthenticationFailure;
83import im.conversations.android.xmpp.model.AuthenticationRequest;
84import im.conversations.android.xmpp.model.AuthenticationStreamFeature;
85import im.conversations.android.xmpp.model.Extension;
86import im.conversations.android.xmpp.model.StreamElement;
87import im.conversations.android.xmpp.model.bind2.Bind;
88import im.conversations.android.xmpp.model.bind2.Bound;
89import im.conversations.android.xmpp.model.cb.SaslChannelBinding;
90import im.conversations.android.xmpp.model.csi.Active;
91import im.conversations.android.xmpp.model.csi.Inactive;
92import im.conversations.android.xmpp.model.disco.info.InfoQuery;
93import im.conversations.android.xmpp.model.error.Condition;
94import im.conversations.android.xmpp.model.fast.Fast;
95import im.conversations.android.xmpp.model.fast.RequestToken;
96import im.conversations.android.xmpp.model.jingle.Jingle;
97import im.conversations.android.xmpp.model.sasl.Auth;
98import im.conversations.android.xmpp.model.sasl.Failure;
99import im.conversations.android.xmpp.model.sasl.Mechanisms;
100import im.conversations.android.xmpp.model.sasl.Response;
101import im.conversations.android.xmpp.model.sasl.SaslError;
102import im.conversations.android.xmpp.model.sasl.Success;
103import im.conversations.android.xmpp.model.sasl2.Authenticate;
104import im.conversations.android.xmpp.model.sasl2.Authentication;
105import im.conversations.android.xmpp.model.sasl2.UserAgent;
106import im.conversations.android.xmpp.model.sm.Ack;
107import im.conversations.android.xmpp.model.sm.Enable;
108import im.conversations.android.xmpp.model.sm.Enabled;
109import im.conversations.android.xmpp.model.sm.Failed;
110import im.conversations.android.xmpp.model.sm.Request;
111import im.conversations.android.xmpp.model.sm.Resume;
112import im.conversations.android.xmpp.model.sm.Resumed;
113import im.conversations.android.xmpp.model.sm.StreamManagement;
114import im.conversations.android.xmpp.model.stanza.Iq;
115import im.conversations.android.xmpp.model.stanza.Presence;
116import im.conversations.android.xmpp.model.stanza.Stanza;
117import im.conversations.android.xmpp.model.streams.StreamError;
118import im.conversations.android.xmpp.model.tls.Proceed;
119import im.conversations.android.xmpp.model.tls.StartTls;
120import im.conversations.android.xmpp.processor.AccountStateProcessor;
121import im.conversations.android.xmpp.processor.BindProcessor;
122import java.io.ByteArrayInputStream;
123import java.io.IOException;
124import java.io.InputStream;
125import java.net.ConnectException;
126import java.net.IDN;
127import java.net.InetAddress;
128import java.net.InetSocketAddress;
129import java.net.Socket;
130import java.net.UnknownHostException;
131import java.security.KeyManagementException;
132import java.security.NoSuchAlgorithmException;
133import java.security.Principal;
134import java.security.PrivateKey;
135import java.security.cert.X509Certificate;
136import java.util.ArrayList;
137import java.util.Arrays;
138import java.util.Collection;
139import java.util.Collections;
140import java.util.HashMap;
141import java.util.HashSet;
142import java.util.Hashtable;
143import java.util.Iterator;
144import java.util.List;
145import java.util.Map;
146import java.util.Map.Entry;
147import java.util.Set;
148import java.util.concurrent.CountDownLatch;
149import java.util.concurrent.TimeUnit;
150import java.util.concurrent.TimeoutException;
151import java.util.concurrent.atomic.AtomicBoolean;
152import java.util.concurrent.atomic.AtomicInteger;
153import java.util.function.Consumer;
154import java.util.regex.Matcher;
155import javax.net.ssl.KeyManager;
156import javax.net.ssl.SSLContext;
157import javax.net.ssl.SSLPeerUnverifiedException;
158import javax.net.ssl.SSLSocket;
159import javax.net.ssl.SSLSocketFactory;
160import javax.net.ssl.X509KeyManager;
161import javax.net.ssl.X509TrustManager;
162import okhttp3.HttpUrl;
163import org.xmlpull.v1.XmlPullParserException;
164
165public class XmppConnection implements Runnable {
166
167 protected final Account account;
168 private final Features features = new Features(this);
169 private final HashMap<String, Jid> commands = new HashMap<>();
170 private final SparseArray<Stanza> mStanzaQueue = new SparseArray<>();
171 private final Hashtable<String, Pair<Iq, Consumer<Iq>>> packetCallbacks = new Hashtable<>();
172 private final Set<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners =
173 new HashSet<>();
174 private final AppSettings appSettings;
175 private final XmppConnectionService mXmppConnectionService;
176 private Socket socket;
177 private XmlReader tagReader;
178 private TagWriter tagWriter = new TagWriter();
179 private boolean shouldAuthenticate = true;
180 private boolean inSmacksSession = false;
181 private boolean quickStartInProgress = false;
182 private boolean isBound = false;
183 private boolean offlineMessagesRetrieved = false;
184 private im.conversations.android.xmpp.model.streams.Features streamFeatures;
185 private im.conversations.android.xmpp.model.streams.Features boundStreamFeatures;
186 private StreamId streamId = null;
187 private int stanzasReceived = 0;
188 private int stanzasSent = 0;
189 private int stanzasSentBeforeAuthentication;
190 private long lastPacketReceived = 0;
191 private long lastPingSent = 0;
192 private long lastConnectionStarted = 0;
193 private long lastSessionStarted = 0;
194 private long lastDiscoStarted = 0;
195 private boolean isMamPreferenceAlways = false;
196 private final AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
197 private final AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
198 private final AtomicInteger mSmCatchupMessageCounter = new AtomicInteger(0);
199 private boolean mInteractive = false;
200 private int attempt = 0;
201 private OnJinglePacketReceived jingleListener = null;
202
203 private final Consumer<Presence> presenceListener;
204 private final Consumer<Iq> unregisteredIqListener;
205 private final Consumer<im.conversations.android.xmpp.model.stanza.Message> messageListener;
206 private final Consumer<Account.State> accountStateProcessor;
207 private AxolotlService axolotlService;
208 private final PgpDecryptionService pgpDecryptionService;
209 private final Runnable bindProcessor;
210 private OnMessageAcknowledged acknowledgedListener = null;
211 private final PendingItem<String> pendingResumeId = new PendingItem<>();
212 private LoginInfo loginInfo;
213 private HashedToken.Mechanism hashTokenRequest;
214 private HttpUrl redirectionUrl = null;
215 private String verifiedHostname = null;
216 private Resolver.Result currentResolverResult;
217 private Resolver.Result seeOtherHostResolverResult;
218 private volatile Thread mThread;
219 private CountDownLatch mStreamCountDownLatch;
220 private final ClassToInstanceMap<AbstractManager> managers;
221
222 public XmppConnection(final Account account, final XmppConnectionService service) {
223 this.account = account;
224 this.mXmppConnectionService = service;
225 this.appSettings = mXmppConnectionService.getAppSettings();
226 this.presenceListener = new PresenceParser(service, this);
227 // TODO rename this to Iq request handler (it handles only IQ get and set; throw assert
228 // error in handler just to be safe)
229 // TODO requires roster and blocking not to be handled by this
230 this.unregisteredIqListener = new IqParser(service, this);
231 this.messageListener = new MessageParser(service, this);
232 this.bindProcessor = new BindProcessor(service, this);
233 this.accountStateProcessor = new AccountStateProcessor(service, this);
234 this.managers = Managers.get(service, this);
235 this.setAxolotlService(new AxolotlService(account, service));
236 this.pgpDecryptionService = new PgpDecryptionService(service);
237 }
238
239 private static void fixResource(final Context context, final Account account) {
240 String resource = account.getResource();
241 int fixedPartLength =
242 context.getString(R.string.app_name).length() + 1; // include the trailing dot
243 int randomPartLength = 4; // 3 bytes
244 if (resource != null && resource.length() > fixedPartLength + randomPartLength) {
245 if (validBase64(
246 resource.substring(fixedPartLength, fixedPartLength + randomPartLength))) {
247 account.setResource(resource.substring(0, fixedPartLength + randomPartLength));
248 }
249 }
250 }
251
252 private static boolean validBase64(final String input) {
253 try {
254 return Base64.decode(input, Base64.URL_SAFE).length == 3;
255 } catch (final Throwable throwable) {
256 return false;
257 }
258 }
259
260 private void changeStatus(final Account.State nextStatus) {
261 synchronized (this) {
262 if (Thread.currentThread().isInterrupted()) {
263 Log.d(
264 Config.LOGTAG,
265 account.getJid().asBareJid()
266 + ": not changing status to "
267 + nextStatus
268 + " because thread was interrupted");
269 return;
270 }
271 if (account.getStatus() != nextStatus) {
272 if (nextStatus == Account.State.OFFLINE
273 && account.getStatus() != Account.State.CONNECTING
274 && account.getStatus() != Account.State.ONLINE
275 && account.getStatus() != Account.State.DISABLED
276 && account.getStatus() != Account.State.LOGGED_OUT) {
277 return;
278 }
279 if (nextStatus == Account.State.ONLINE) {
280 this.attempt = 0;
281 }
282 account.setStatus(nextStatus);
283 } else {
284 return;
285 }
286 }
287 this.accountStateProcessor.accept(nextStatus);
288 }
289
290 public Jid getJidForCommand(final String node) {
291 synchronized (this.commands) {
292 return this.commands.get(node);
293 }
294 }
295
296 public void prepareNewConnection() {
297 this.lastConnectionStarted = SystemClock.elapsedRealtime();
298 this.lastPingSent = SystemClock.elapsedRealtime();
299 this.lastDiscoStarted = Long.MAX_VALUE;
300 this.mWaitingForSmCatchup.set(false);
301 this.changeStatus(Account.State.CONNECTING);
302 }
303
304 public boolean isWaitingForSmCatchup() {
305 return mWaitingForSmCatchup.get();
306 }
307
308 public void incrementSmCatchupMessageCounter() {
309 this.mSmCatchupMessageCounter.incrementAndGet();
310 }
311
312 protected void connect() {
313 if (mXmppConnectionService.areMessagesInitialized()) {
314 mXmppConnectionService.resetSendingToWaiting(account);
315 }
316 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
317 this.streamFeatures = null;
318 this.pendingResumeId.clear();
319 this.loginInfo = null;
320 this.features.encryptionEnabled = false;
321 this.inSmacksSession = false;
322 this.quickStartInProgress = false;
323 this.isBound = false;
324 this.attempt++;
325 this.currentResolverResult = null;
326 // will be set if user entered hostname is being used or hostname was verified with dnssec
327 this.verifiedHostname = null;
328 try {
329 Socket localSocket;
330 shouldAuthenticate = !account.isOptionSet(Account.OPTION_REGISTER);
331 this.changeStatus(Account.State.CONNECTING);
332 final boolean useTorSetting = appSettings.isUseTor();
333 final boolean extended = appSettings.isExtendedConnectionOptions();
334 final boolean useTor = useTorSetting || account.isOnion();
335 // TODO collapse Tor usage into normal connection code path
336 if (useTor) {
337 final var seeOtherHost = this.seeOtherHostResolverResult;
338 final var hostname = account.getHostname().trim();
339 final var port = account.getPort();
340 final Resolver.Result resume = streamId == null ? null : streamId.location;
341 final Resolver.Result viaTor;
342 if (resume != null) {
343 viaTor = resume;
344 } else if (seeOtherHost != null) {
345 viaTor = seeOtherHost;
346 } else if (hostname.isEmpty() || port < 0) {
347 viaTor =
348 Iterables.getOnlyElement(
349 Resolver.fromHardCoded(
350 account.getServer(), Resolver.XMPP_PORT_STARTTLS));
351 } else {
352 if (useTorSetting || extended) {
353 // if the hostname configuration is showing we can take it
354 viaTor = Iterables.getOnlyElement(Resolver.fromHardCoded(hostname, port));
355 } else {
356 viaTor =
357 Iterables.getOnlyElement(
358 Resolver.fromHardCoded(
359 account.getServer(), Resolver.XMPP_PORT_STARTTLS));
360 }
361 this.verifiedHostname = hostname;
362 }
363
364 Log.d(Config.LOGTAG, account.getJid().asBareJid() + " via Tor: " + viaTor);
365
366 localSocket =
367 SocksSocketFactory.createSocketOverTor(
368 viaTor.asDestination(), viaTor.getPort());
369
370 if (viaTor.isDirectTls()) {
371 localSocket = upgradeSocketToTls(localSocket);
372 features.encryptionEnabled = true;
373 }
374
375 try {
376 if (startXmpp(localSocket)) {
377 this.currentResolverResult = viaTor;
378 this.seeOtherHostResolverResult = null;
379 }
380 } catch (final InterruptedException e) {
381 Log.d(
382 Config.LOGTAG,
383 account.getJid().asBareJid()
384 + ": thread was interrupted before beginning stream");
385 return;
386 } catch (final Exception e) {
387 throw new IOException("Could not start stream", e);
388 }
389 } else {
390 final var hostname = account.getHostname().trim();
391 final String domain = account.getServer();
392 final List<Resolver.Result> results = new ArrayList<>();
393 final boolean hardcoded = extended && !hostname.isEmpty();
394 if (hardcoded) {
395 results.addAll(Resolver.fromHardCoded(hostname, account.getPort()));
396 } else {
397 results.addAll(Resolver.resolve(domain));
398 }
399 if (Thread.currentThread().isInterrupted()) {
400 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
401 return;
402 }
403 if (results.isEmpty()) {
404 Log.e(
405 Config.LOGTAG,
406 account.getJid().asBareJid() + ": Resolver results were empty");
407 return;
408 }
409 final Resolver.Result storedBackupResult;
410 if (hardcoded) {
411 storedBackupResult = null;
412 } else {
413 storedBackupResult =
414 mXmppConnectionService.databaseBackend.findResolverResult(domain);
415 if (storedBackupResult != null && !results.contains(storedBackupResult)) {
416 results.add(storedBackupResult);
417 Log.d(
418 Config.LOGTAG,
419 account.getJid().asBareJid()
420 + ": loaded backup resolver result from db: "
421 + storedBackupResult);
422 }
423 }
424 final StreamId streamId = this.streamId;
425 final Resolver.Result resumeLocation = streamId == null ? null : streamId.location;
426 if (resumeLocation != null) {
427 Log.d(
428 Config.LOGTAG,
429 account.getJid().asBareJid()
430 + ": injected resume location on position 0");
431 results.add(0, resumeLocation);
432 }
433 final Resolver.Result seeOtherHost = this.seeOtherHostResolverResult;
434 if (seeOtherHost != null) {
435 Log.d(
436 Config.LOGTAG,
437 account.getJid().asBareJid()
438 + ": injected see-other-host on position 0");
439 results.add(0, seeOtherHost);
440 }
441 for (final Iterator<Resolver.Result> iterator = results.iterator();
442 iterator.hasNext(); ) {
443 final Resolver.Result result = iterator.next();
444 if (Thread.currentThread().isInterrupted()) {
445 Log.d(
446 Config.LOGTAG,
447 account.getJid().asBareJid() + ": Thread was interrupted");
448 return;
449 }
450 try {
451 // if tls is true, encryption is implied and must not be started
452 features.encryptionEnabled = result.isDirectTls();
453 verifiedHostname =
454 result.isAuthenticated() ? result.getHostname().toString() : null;
455 final InetSocketAddress addr;
456 if (result.getIp() != null) {
457 addr = new InetSocketAddress(result.getIp(), result.getPort());
458 Log.d(
459 Config.LOGTAG,
460 account.getJid().asBareJid().toString()
461 + ": using values from resolver "
462 + (result.getHostname() == null
463 ? ""
464 : result.getHostname().toString() + "/")
465 + result.getIp().getHostAddress()
466 + ":"
467 + result.getPort()
468 + " tls: "
469 + features.encryptionEnabled);
470 } else {
471 addr =
472 new InetSocketAddress(
473 IDN.toASCII(result.getHostname().toString()),
474 result.getPort());
475 Log.d(
476 Config.LOGTAG,
477 account.getJid().asBareJid().toString()
478 + ": using values from resolver "
479 + result.getHostname().toString()
480 + ":"
481 + result.getPort()
482 + " tls: "
483 + features.encryptionEnabled);
484 }
485
486 localSocket = new Socket();
487 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
488 localSocket.setSoTimeout(Config.SOCKET_TIMEOUT * 1000);
489 if (features.encryptionEnabled) {
490 localSocket = upgradeSocketToTls(localSocket);
491 }
492 if (startXmpp(localSocket)) {
493 // reset to 0; once the connection is established we don't want this
494 localSocket.setSoTimeout(0);
495 if (!hardcoded && !result.equals(storedBackupResult)) {
496 mXmppConnectionService.databaseBackend.saveResolverResult(
497 domain, result);
498 }
499 this.currentResolverResult = result;
500 this.seeOtherHostResolverResult = null;
501 break; // successfully connected to server that speaks xmpp
502 } else {
503 FileBackend.close(localSocket);
504 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
505 }
506 } catch (final StateChangingException e) {
507 if (!iterator.hasNext()) {
508 throw e;
509 }
510 } catch (InterruptedException e) {
511 Log.d(
512 Config.LOGTAG,
513 account.getJid().asBareJid()
514 + ": thread was interrupted before beginning stream");
515 return;
516 } catch (final Throwable e) {
517 Log.d(
518 Config.LOGTAG,
519 account.getJid().asBareJid().toString()
520 + ": "
521 + e.getMessage()
522 + "("
523 + e.getClass().getName()
524 + ")");
525 if (!iterator.hasNext()) {
526 throw new UnknownHostException();
527 }
528 }
529 }
530 }
531 processStream();
532 } catch (final SecurityException e) {
533 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
534 } catch (final StateChangingException e) {
535 this.changeStatus(e.state);
536 } catch (final UnknownHostException
537 | ConnectException
538 | SocksSocketFactory.HostNotFoundException e) {
539 this.changeStatus(Account.State.SERVER_NOT_FOUND);
540 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
541 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
542 } catch (final IOException | XmlPullParserException e) {
543 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
544 this.changeStatus(Account.State.OFFLINE);
545 this.attempt = Math.max(0, this.attempt - 1);
546 } finally {
547 if (!Thread.currentThread().isInterrupted()) {
548 forceCloseSocket();
549 } else {
550 Log.d(
551 Config.LOGTAG,
552 account.getJid().asBareJid()
553 + ": not force closing socket because thread was interrupted");
554 }
555 }
556 }
557
558 /**
559 * Starts xmpp protocol, call after connecting to socket
560 *
561 * @return true if server returns with valid xmpp, false otherwise
562 */
563 private boolean startXmpp(final Socket socket) throws Exception {
564 if (Thread.currentThread().isInterrupted()) {
565 throw new InterruptedException();
566 }
567 // this means we have at least found a socket to connect to. give the connection another 90s
568 this.lastConnectionStarted = SystemClock.elapsedRealtime();
569 this.socket = socket;
570 this.tagReader = new XmlReader();
571 if (tagWriter != null) {
572 tagWriter.forceClose();
573 }
574 this.tagWriter = new TagWriter();
575 this.tagWriter.setOutputStream(socket.getOutputStream());
576 this.tagReader.setInputStream(socket.getInputStream());
577 this.tagWriter.beginDocument();
578 final boolean quickStart;
579 if (socket instanceof SSLSocket sslSocket) {
580 SSLSockets.log(account, sslSocket);
581 quickStart = establishStream(SSLSockets.version(sslSocket));
582 } else {
583 quickStart = establishStream(SSLSockets.Version.NONE);
584 }
585 final Tag tag = tagReader.readTag();
586 if (Thread.currentThread().isInterrupted()) {
587 throw new InterruptedException();
588 }
589 if (tag == null) {
590 return false;
591 }
592 final boolean success = tag.isStart("stream", Namespace.STREAMS);
593 if (success) {
594 final var from = tag.getAttribute("from");
595 if (from == null || !from.equals(account.getServer())) {
596 throw new StateChangingException(Account.State.HOST_UNKNOWN);
597 }
598 }
599 if (success && quickStart) {
600 this.quickStartInProgress = true;
601 }
602 return success;
603 }
604
605 private SSLSocketFactory getSSLSocketFactory()
606 throws NoSuchAlgorithmException, KeyManagementException {
607 final SSLContext sc = SSLSockets.getSSLContext();
608 final MemorizingTrustManager trustManager =
609 this.mXmppConnectionService.getMemorizingTrustManager();
610 final KeyManager[] keyManager;
611 if (account.getPrivateKeyAlias() != null) {
612 keyManager = new KeyManager[] {new MyKeyManager()};
613 } else {
614 keyManager = null;
615 }
616 final String domain = account.getServer();
617 sc.init(
618 keyManager,
619 new X509TrustManager[] {
620 mInteractive
621 ? trustManager.getInteractive(domain)
622 : trustManager.getNonInteractive(domain)
623 },
624 SECURE_RANDOM);
625 return sc.getSocketFactory();
626 }
627
628 @Override
629 public void run() {
630 synchronized (this) {
631 this.mThread = Thread.currentThread();
632 if (this.mThread.isInterrupted()) {
633 Log.d(
634 Config.LOGTAG,
635 account.getJid().asBareJid()
636 + ": aborting connect because thread was interrupted");
637 return;
638 }
639 forceCloseSocket();
640 }
641 connect();
642 }
643
644 private void processStream() throws XmlPullParserException, IOException {
645 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
646 this.mStreamCountDownLatch = streamCountDownLatch;
647 Tag nextTag = tagReader.readTag();
648 while (nextTag != null && !nextTag.isEnd("stream")) {
649 if (nextTag.isStart("error", Namespace.STREAMS)) {
650 processStreamError(tagReader.readElement(nextTag, StreamError.class));
651 } else if (nextTag.isStart("features", Namespace.STREAMS)) {
652 processStreamFeatures(nextTag);
653 } else if (nextTag.isStart("proceed", Namespace.TLS)) {
654 if (this.socket instanceof SSLSocket) {
655 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
656 }
657 switchOverToTls(nextTag);
658 } else if (nextTag.isStart("failure", Namespace.TLS)) {
659 throw new StateChangingException(Account.State.TLS_ERROR);
660 } else if (!isSecure()) {
661 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
662 } else if (account.isOptionSet(Account.OPTION_REGISTER)
663 && nextTag.isStart("iq", Namespace.JABBER_CLIENT)) {
664 processIq(nextTag);
665 } else if (this.loginInfo == null) {
666 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
667 } else if (nextTag.isStart("success", Namespace.SASL)) {
668 processSuccess(tagReader.readElement(nextTag, Success.class));
669 break;
670 } else if (nextTag.isStart("success", Namespace.SASL_2)) {
671 processSuccess(
672 tagReader.readElement(
673 nextTag, im.conversations.android.xmpp.model.sasl2.Success.class));
674 } else if (nextTag.isStart("failure", Namespace.SASL)) {
675 final var failure = tagReader.readElement(nextTag, Failure.class);
676 processFailure(failure);
677 } else if (nextTag.isStart("failure", Namespace.SASL_2)) {
678 final var failure =
679 tagReader.readElement(
680 nextTag, im.conversations.android.xmpp.model.sasl2.Failure.class);
681 processFailure(failure);
682 } else if (nextTag.isStart("continue", Namespace.SASL_2)) {
683 // two step sasl2 - we don’t support this yet
684 throw new StateChangingException(Account.State.INCOMPATIBLE_CLIENT);
685 } else if (nextTag.isStart("challenge")) {
686 final Element challenge = tagReader.readElement(nextTag);
687 processChallenge(challenge);
688 } else if (!LoginInfo.isSuccess(this.loginInfo)) {
689 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
690 } else if (this.streamId != null
691 && nextTag.isStart("resumed", Namespace.STREAM_MANAGEMENT)) {
692 final Resumed resumed = tagReader.readElement(nextTag, Resumed.class);
693 processResumed(resumed);
694 } else if (nextTag.isStart("failed", Namespace.STREAM_MANAGEMENT)) {
695 final Failed failed = tagReader.readElement(nextTag, Failed.class);
696 processFailed(failed, true);
697 } else if (nextTag.isStart("iq", Namespace.JABBER_CLIENT)) {
698 processIq(nextTag);
699 } else if (!isBound) {
700 Log.d(
701 Config.LOGTAG,
702 account.getJid().asBareJid()
703 + ": server sent unexpected"
704 + nextTag.identifier());
705 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
706 } else if (nextTag.isStart("message", Namespace.JABBER_CLIENT)) {
707 processMessage(nextTag);
708 } else if (nextTag.isStart("presence", Namespace.JABBER_CLIENT)) {
709 processPresence(nextTag);
710 } else if (nextTag.isStart("enabled", Namespace.STREAM_MANAGEMENT)) {
711 final var enabled = tagReader.readElement(nextTag, Enabled.class);
712 processEnabled(enabled);
713 } else if (nextTag.isStart("r", Namespace.STREAM_MANAGEMENT)) {
714 tagReader.readElement(nextTag);
715 if (Config.EXTENDED_SM_LOGGING) {
716 Log.d(
717 Config.LOGTAG,
718 account.getJid().asBareJid()
719 + ": acknowledging stanza #"
720 + this.stanzasReceived);
721 }
722 final Ack ack = new Ack(this.stanzasReceived);
723 tagWriter.writeStanzaAsync(ack);
724 } else if (nextTag.isStart("a", Namespace.STREAM_MANAGEMENT)) {
725 boolean accountUiNeedsRefresh = false;
726 synchronized (NotificationService.CATCHUP_LOCK) {
727 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
728 final int messageCount = mSmCatchupMessageCounter.get();
729 final int pendingIQs = packetCallbacks.size();
730 Log.d(
731 Config.LOGTAG,
732 account.getJid().asBareJid()
733 + ": SM catchup complete (messages="
734 + messageCount
735 + ", pending IQs="
736 + pendingIQs
737 + ")");
738 accountUiNeedsRefresh = true;
739 if (messageCount > 0) {
740 mXmppConnectionService
741 .getNotificationService()
742 .finishBacklog(true, account);
743 }
744 }
745 }
746 if (accountUiNeedsRefresh) {
747 mXmppConnectionService.updateAccountUi();
748 }
749 final var ack = tagReader.readElement(nextTag, Ack.class);
750 lastPacketReceived = SystemClock.elapsedRealtime();
751 final boolean acknowledgedMessages;
752 synchronized (this.mStanzaQueue) {
753 final Optional<Integer> serverSequence = ack.getHandled();
754 if (serverSequence.isPresent()) {
755 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence.get());
756 } else {
757 acknowledgedMessages = false;
758 Log.d(
759 Config.LOGTAG,
760 account.getJid().asBareJid()
761 + ": server send ack without sequence number");
762 }
763 }
764 if (acknowledgedMessages) {
765 mXmppConnectionService.updateConversationUi();
766 }
767 } else {
768 Log.e(
769 Config.LOGTAG,
770 account.getJid().asBareJid()
771 + ": Encountered unknown stream element"
772 + nextTag.identifier());
773 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
774 }
775 nextTag = tagReader.readTag();
776 }
777 if (nextTag != null && nextTag.isEnd("stream")) {
778 streamCountDownLatch.countDown();
779 }
780 }
781
782 private void processChallenge(final Element challenge) throws IOException {
783 final SaslMechanism.Version version;
784 try {
785 version = SaslMechanism.Version.of(challenge);
786 } catch (final IllegalArgumentException e) {
787 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
788 }
789 final StreamElement response;
790 if (version == SaslMechanism.Version.SASL) {
791 response = new Response();
792 } else if (version == SaslMechanism.Version.SASL_2) {
793 response = new im.conversations.android.xmpp.model.sasl2.Response();
794 } else {
795 throw new AssertionError("Missing implementation for " + version);
796 }
797 final LoginInfo currentLoginInfo = this.loginInfo;
798 if (currentLoginInfo == null || LoginInfo.isSuccess(currentLoginInfo)) {
799 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
800 }
801 try {
802 response.setContent(
803 currentLoginInfo.saslMechanism.getResponse(
804 challenge.getContent(), sslSocketOrNull(socket)));
805 } catch (final SaslMechanism.AuthenticationException e) {
806 // TODO: Send auth abort tag.
807 Log.e(Config.LOGTAG, e.toString());
808 throw new StateChangingException(Account.State.UNAUTHORIZED);
809 }
810 tagWriter.writeElement(response);
811 }
812
813 private void processSuccess(final StreamElement element)
814 throws IOException, XmlPullParserException {
815 final LoginInfo currentLoginInfo = this.loginInfo;
816 final SaslMechanism currentSaslMechanism = LoginInfo.mechanism(currentLoginInfo);
817 if (currentLoginInfo == null
818 || LoginInfo.isSuccess(currentLoginInfo)
819 || currentSaslMechanism == null) {
820 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
821 }
822 final SaslMechanism.Version version;
823 final String challenge;
824 if (element instanceof Success success) {
825 challenge = success.getContent();
826 version = SaslMechanism.Version.SASL;
827 } else if (element instanceof im.conversations.android.xmpp.model.sasl2.Success success) {
828 challenge = success.findChildContent("additional-data");
829 version = SaslMechanism.Version.SASL_2;
830 } else {
831 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
832 }
833 try {
834 currentLoginInfo.success(challenge, sslSocketOrNull(socket));
835 } catch (final SaslMechanism.AuthenticationException e) {
836 Log.e(Config.LOGTAG, account.getJid().asBareJid() + ": authentication failure ", e);
837 throw new StateChangingException(Account.State.UNAUTHORIZED);
838 }
839 Log.d(
840 Config.LOGTAG,
841 account.getJid().asBareJid().toString() + ": logged in (using " + version + ")");
842 if (SaslMechanism.pin(currentSaslMechanism)) {
843 account.setPinnedMechanism(currentSaslMechanism);
844 }
845 if (element instanceof im.conversations.android.xmpp.model.sasl2.Success success) {
846 final var authorizationJid = success.getAuthorizationIdentifier();
847 checkAssignedDomainOrThrow(authorizationJid);
848 Log.d(
849 Config.LOGTAG,
850 account.getJid().asBareJid()
851 + ": SASL 2.0 authorization identifier was "
852 + authorizationJid);
853 // TODO this should only happen when we used Bind 2
854 if (authorizationJid.isFullJid() && account.setJid(authorizationJid)) {
855 Log.d(
856 Config.LOGTAG,
857 account.getJid().asBareJid()
858 + ": jid changed during SASL 2.0. updating database");
859 }
860 final Bound bound = success.getExtension(Bound.class);
861 final Resumed resumed = success.getExtension(Resumed.class);
862 final Failed failed = success.getExtension(Failed.class);
863 final Element tokenWrapper = success.findChild("token", Namespace.FAST);
864 final String token = tokenWrapper == null ? null : tokenWrapper.getAttribute("token");
865 if (bound != null && resumed != null) {
866 Log.d(
867 Config.LOGTAG,
868 account.getJid().asBareJid()
869 + ": server sent bound and resumed in SASL2 success");
870 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
871 }
872 if (resumed != null && streamId != null) {
873 if (this.boundStreamFeatures != null) {
874 this.streamFeatures = this.boundStreamFeatures;
875 Log.d(
876 Config.LOGTAG,
877 "putting previous stream features back in place: "
878 + XmlHelper.printElementNames(this.boundStreamFeatures));
879 }
880 processResumed(resumed);
881 } else if (failed != null) {
882 processFailed(failed, false); // wait for new stream features
883 }
884 if (bound != null) {
885 clearIqCallbacks();
886 this.isBound = true;
887 processNopStreamFeatures();
888 this.boundStreamFeatures = this.streamFeatures;
889 final Enabled streamManagementEnabled = bound.getExtension(Enabled.class);
890 final Element carbonsEnabled = bound.findChild("enabled", Namespace.CARBONS);
891 final boolean waitForDisco;
892 if (streamManagementEnabled != null) {
893 resetOutboundStanzaQueue();
894 processEnabled(streamManagementEnabled);
895 waitForDisco = true;
896 } else {
897 // if we did not enable stream management in bind do it now
898 waitForDisco = enableStreamManagement();
899 }
900 final boolean negotiatedCarbons;
901 if (carbonsEnabled != null) {
902 negotiatedCarbons = true;
903 Log.d(
904 Config.LOGTAG,
905 account.getJid().asBareJid()
906 + ": successfully enabled carbons (via Bind 2.0)");
907 } else if (currentLoginInfo.inlineBindFeatures != null
908 && currentLoginInfo.inlineBindFeatures.contains(Namespace.CARBONS)) {
909 negotiatedCarbons = true;
910 Log.d(
911 Config.LOGTAG,
912 account.getJid().asBareJid()
913 + ": successfully enabled carbons (via Bind 2.0/implicit)");
914 } else {
915 negotiatedCarbons = false;
916 }
917 sendPostBindInitialization(waitForDisco, negotiatedCarbons);
918 }
919 final HashedToken.Mechanism tokenMechanism;
920 if (SaslMechanism.hashedToken(currentSaslMechanism)) {
921 tokenMechanism = ((HashedToken) currentSaslMechanism).getTokenMechanism();
922 } else if (this.hashTokenRequest != null) {
923 tokenMechanism = this.hashTokenRequest;
924 } else {
925 tokenMechanism = null;
926 }
927 if (tokenMechanism != null && !Strings.isNullOrEmpty(token)) {
928 if (ChannelBinding.priority(tokenMechanism.channelBinding)
929 >= ChannelBindingMechanism.getPriority(currentSaslMechanism)) {
930 this.account.setFastToken(tokenMechanism, token);
931 Log.d(
932 Config.LOGTAG,
933 account.getJid().asBareJid()
934 + ": storing hashed token "
935 + tokenMechanism);
936 } else {
937 Log.d(
938 Config.LOGTAG,
939 account.getJid().asBareJid()
940 + ": not accepting hashed token "
941 + tokenMechanism.name()
942 + " for log in mechanism "
943 + currentSaslMechanism.getMechanism());
944 this.account.resetFastToken();
945 }
946 } else if (this.hashTokenRequest != null) {
947 Log.w(
948 Config.LOGTAG,
949 account.getJid().asBareJid()
950 + ": no response to our hashed token request "
951 + this.hashTokenRequest);
952 }
953 }
954 mXmppConnectionService.databaseBackend.updateAccount(account);
955 this.quickStartInProgress = false;
956 if (version == SaslMechanism.Version.SASL) {
957 tagReader.reset();
958 sendStartStream(false, true);
959 final Tag tag = tagReader.readTag();
960 if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
961 processStream();
962 } else {
963 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
964 }
965 }
966 }
967
968 private void resetOutboundStanzaQueue() {
969 synchronized (this.mStanzaQueue) {
970 final ImmutableList.Builder<Stanza> intermediateStanzasBuilder =
971 new ImmutableList.Builder<>();
972 if (Config.EXTENDED_SM_LOGGING) {
973 Log.d(
974 Config.LOGTAG,
975 account.getJid().asBareJid()
976 + ": stanzas sent before auth: "
977 + this.stanzasSentBeforeAuthentication);
978 }
979 for (int i = this.stanzasSentBeforeAuthentication + 1; i <= this.stanzasSent; ++i) {
980 final Stanza stanza = this.mStanzaQueue.get(i);
981 if (stanza != null) {
982 intermediateStanzasBuilder.add(stanza);
983 }
984 }
985 this.mStanzaQueue.clear();
986 final var intermediateStanzas = intermediateStanzasBuilder.build();
987 for (int i = 0; i < intermediateStanzas.size(); ++i) {
988 this.mStanzaQueue.append(i + 1, intermediateStanzas.get(i));
989 }
990 this.stanzasSent = intermediateStanzas.size();
991 if (Config.EXTENDED_SM_LOGGING) {
992 Log.d(
993 Config.LOGTAG,
994 account.getJid().asBareJid()
995 + ": resetting outbound stanza queue to "
996 + this.stanzasSent);
997 }
998 }
999 }
1000
1001 private void processNopStreamFeatures() throws IOException {
1002 final Tag tag = tagReader.readTag();
1003 if (tag != null && tag.isStart("features", Namespace.STREAMS)) {
1004 this.streamFeatures =
1005 tagReader.readElement(
1006 tag, im.conversations.android.xmpp.model.streams.Features.class);
1007 Log.d(
1008 Config.LOGTAG,
1009 account.getJid().asBareJid()
1010 + ": processed NOP stream features after success: "
1011 + XmlHelper.printElementNames(this.streamFeatures));
1012 } else {
1013 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received " + tag);
1014 Log.d(
1015 Config.LOGTAG,
1016 account.getJid().asBareJid()
1017 + ": server did not send stream features after SASL2 success");
1018 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1019 }
1020 }
1021
1022 private void processFailure(final AuthenticationFailure failure) throws IOException {
1023 final SaslMechanism.Version version;
1024 try {
1025 version = SaslMechanism.Version.of(failure);
1026 } catch (final IllegalArgumentException e) {
1027 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1028 }
1029
1030 final LoginInfo currentLoginInfo = this.loginInfo;
1031 if (currentLoginInfo == null || LoginInfo.isSuccess(currentLoginInfo)) {
1032 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1033 }
1034
1035 Log.d(Config.LOGTAG, failure.toString());
1036 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": login failure " + version);
1037 if (SaslMechanism.hashedToken(LoginInfo.mechanism(currentLoginInfo))) {
1038 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resetting token");
1039 account.resetFastToken();
1040 mXmppConnectionService.databaseBackend.updateAccount(account);
1041 }
1042 final var errorCondition = failure.getErrorCondition();
1043 if (errorCondition instanceof SaslError.InvalidMechanism
1044 || errorCondition instanceof SaslError.MechanismTooWeak) {
1045 Log.d(
1046 Config.LOGTAG,
1047 account.getJid().asBareJid()
1048 + ": invalid or too weak mechanism. resetting quick start");
1049 if (account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false)) {
1050 mXmppConnectionService.databaseBackend.updateAccount(account);
1051 }
1052 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1053 } else if (errorCondition instanceof SaslError.TemporaryAuthFailure) {
1054 throw new StateChangingException(Account.State.TEMPORARY_AUTH_FAILURE);
1055 } else if (errorCondition instanceof SaslError.AccountDisabled) {
1056 final String text = failure.getText();
1057 if (Strings.isNullOrEmpty(text)) {
1058 throw new StateChangingException(Account.State.UNAUTHORIZED);
1059 }
1060 final Matcher matcher = Patterns.URI_HTTP.matcher(text);
1061 if (matcher.find()) {
1062 final HttpUrl url;
1063 try {
1064 url = HttpUrl.get(text.substring(matcher.start(), matcher.end()));
1065 } catch (final IllegalArgumentException e) {
1066 throw new StateChangingException(Account.State.UNAUTHORIZED);
1067 }
1068 if (url.isHttps()) {
1069 this.redirectionUrl = url;
1070 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
1071 }
1072 }
1073 }
1074 if (SaslMechanism.hashedToken(LoginInfo.mechanism(currentLoginInfo))) {
1075 Log.d(
1076 Config.LOGTAG,
1077 account.getJid().asBareJid()
1078 + ": fast authentication failed. falling back to regular"
1079 + " authentication");
1080 this.loginInfo = null;
1081 authenticate();
1082 } else {
1083 throw new StateChangingException(Account.State.UNAUTHORIZED);
1084 }
1085 }
1086
1087 private static SSLSocket sslSocketOrNull(final Socket socket) {
1088 if (socket instanceof SSLSocket) {
1089 return (SSLSocket) socket;
1090 } else {
1091 return null;
1092 }
1093 }
1094
1095 private void processEnabled(final Enabled enabled) {
1096 final StreamId streamId = getStreamId(enabled);
1097 if (streamId == null) {
1098 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream management enabled");
1099 } else {
1100 Log.d(
1101 Config.LOGTAG,
1102 account.getJid().asBareJid()
1103 + ": stream management enabled. resume at: "
1104 + streamId.location);
1105 }
1106 this.streamId = streamId;
1107 this.stanzasReceived = 0;
1108 this.inSmacksSession = true;
1109 final var r = new Request();
1110 tagWriter.writeStanzaAsync(r);
1111 }
1112
1113 @Nullable
1114 private StreamId getStreamId(final Enabled enabled) {
1115 final Optional<String> id = enabled.getResumeId();
1116 final String locationAttribute = enabled.getLocation();
1117 final Resolver.Result currentResolverResult = this.currentResolverResult;
1118 final Resolver.Result location;
1119 if (Strings.isNullOrEmpty(locationAttribute) || currentResolverResult == null) {
1120 location = null;
1121 } else {
1122 location = currentResolverResult.seeOtherHost(locationAttribute);
1123 }
1124 return id.isPresent() ? new StreamId(id.get(), location) : null;
1125 }
1126
1127 private void processResumed(final Resumed resumed) throws StateChangingException {
1128 final var pendingResumeId = this.pendingResumeId.pop();
1129 final var prevId = resumed.getPrevId();
1130 if (prevId == null || !prevId.equals(pendingResumeId)) {
1131 Log.d(
1132 Config.LOGTAG,
1133 account.getJid().asBareJid()
1134 + ": server tried resume with unknown id "
1135 + prevId);
1136 resetStreamId();
1137 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1138 }
1139 this.inSmacksSession = true;
1140 this.isBound = true;
1141 this.tagWriter.writeStanzaAsync(new Request());
1142 lastPacketReceived = SystemClock.elapsedRealtime();
1143 final Optional<Integer> h = resumed.getHandled();
1144 final int serverCount;
1145 if (h.isPresent()) {
1146 serverCount = h.get();
1147 } else {
1148 resetStreamId();
1149 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1150 }
1151 final ArrayList<Stanza> failedStanzas = new ArrayList<>();
1152 final boolean acknowledgedMessages;
1153 synchronized (this.mStanzaQueue) {
1154 if (serverCount < stanzasSent) {
1155 Log.d(
1156 Config.LOGTAG,
1157 account.getJid().asBareJid() + ": session resumed with lost packages");
1158 stanzasSent = serverCount;
1159 } else {
1160 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": session resumed");
1161 }
1162 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
1163 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
1164 failedStanzas.add(mStanzaQueue.valueAt(i));
1165 }
1166 mStanzaQueue.clear();
1167 }
1168 if (acknowledgedMessages) {
1169 mXmppConnectionService.updateConversationUi();
1170 }
1171 Log.d(
1172 Config.LOGTAG,
1173 account.getJid().asBareJid() + ": resending " + failedStanzas.size() + " stanzas");
1174 for (final Stanza packet : failedStanzas) {
1175 if (packet instanceof im.conversations.android.xmpp.model.stanza.Message message) {
1176 mXmppConnectionService.markMessage(
1177 account,
1178 message.getTo().asBareJid(),
1179 message.getId(),
1180 Message.STATUS_UNSEND);
1181 }
1182 sendPacket(packet);
1183 }
1184 if (mWaitForDisco.get()) {
1185 this.lastDiscoStarted = SystemClock.elapsedRealtime();
1186 Log.d(
1187 Config.LOGTAG,
1188 account.getJid().asBareJid() + ": awaiting disco results after resume");
1189 changeStatus(Account.State.CONNECTING);
1190 } else {
1191 changeStatusToOnline();
1192 }
1193 }
1194
1195 private void changeStatusToOnline() {
1196 Log.d(
1197 Config.LOGTAG,
1198 account.getJid().asBareJid() + ": online with resource " + account.getResource());
1199 changeStatus(Account.State.ONLINE);
1200 }
1201
1202 private void processFailed(final Failed failed, final boolean sendBindRequest) {
1203 final Optional<Integer> serverCount = failed.getHandled();
1204 if (serverCount.isPresent()) {
1205 Log.d(
1206 Config.LOGTAG,
1207 account.getJid().asBareJid()
1208 + ": resumption failed but server acknowledged stanza #"
1209 + serverCount.get());
1210 final boolean acknowledgedMessages;
1211 synchronized (this.mStanzaQueue) {
1212 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount.get());
1213 }
1214 if (acknowledgedMessages) {
1215 mXmppConnectionService.updateConversationUi();
1216 }
1217 } else {
1218 Log.d(
1219 Config.LOGTAG,
1220 account.getJid().asBareJid()
1221 + ": resumption failed ("
1222 + XmlHelper.print(failed.getChildren())
1223 + ")");
1224 }
1225 resetStreamId();
1226 if (sendBindRequest) {
1227 sendBindRequest();
1228 }
1229 }
1230
1231 private boolean acknowledgeStanzaUpTo(final int serverCount) {
1232 if (serverCount > stanzasSent) {
1233 Log.e(
1234 Config.LOGTAG,
1235 "server acknowledged more stanzas than we sent. serverCount="
1236 + serverCount
1237 + ", ourCount="
1238 + stanzasSent);
1239 }
1240 boolean acknowledgedMessages = false;
1241 for (int i = 0; i < mStanzaQueue.size(); ++i) {
1242 if (serverCount >= mStanzaQueue.keyAt(i)) {
1243 if (Config.EXTENDED_SM_LOGGING) {
1244 Log.d(
1245 Config.LOGTAG,
1246 account.getJid().asBareJid()
1247 + ": server acknowledged stanza #"
1248 + mStanzaQueue.keyAt(i));
1249 }
1250 final Stanza stanza = mStanzaQueue.valueAt(i);
1251 if (stanza instanceof im.conversations.android.xmpp.model.stanza.Message packet
1252 && acknowledgedListener != null) {
1253 final String id = packet.getId();
1254 final Jid to = packet.getTo();
1255 if (id != null && to != null) {
1256 acknowledgedMessages |=
1257 acknowledgedListener.onMessageAcknowledged(account, to, id);
1258 }
1259 }
1260 mStanzaQueue.removeAt(i);
1261 i--;
1262 }
1263 }
1264 return acknowledgedMessages;
1265 }
1266
1267 private <S extends Stanza> @NonNull S processPacket(final Tag currentTag, final Class<S> clazz)
1268 throws IOException {
1269 final S stanza = tagReader.readElement(currentTag, clazz);
1270 if (stanzasReceived == Integer.MAX_VALUE) {
1271 resetStreamId();
1272 throw new IOException("time to restart the session. cant handle >2 billion pcks");
1273 }
1274 if (inSmacksSession) {
1275 ++stanzasReceived;
1276 } else if (features.sm()) {
1277 Log.d(
1278 Config.LOGTAG,
1279 account.getJid().asBareJid()
1280 + ": not counting stanza("
1281 + stanza.getClass().getSimpleName()
1282 + "). Not in smacks session.");
1283 }
1284 lastPacketReceived = SystemClock.elapsedRealtime();
1285 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
1286 Log.d(Config.LOGTAG, "[background stanza] " + stanza);
1287 }
1288 return stanza;
1289 }
1290
1291 private void processIq(final Tag currentTag) throws IOException {
1292 final Iq packet = processPacket(currentTag, Iq.class);
1293 if (packet.isInvalid()) {
1294 Log.e(
1295 Config.LOGTAG,
1296 "encountered invalid iq from='"
1297 + packet.getFrom()
1298 + "' to='"
1299 + packet.getTo()
1300 + "'");
1301 return;
1302 }
1303 if (Thread.currentThread().isInterrupted()) {
1304 Log.d(
1305 Config.LOGTAG,
1306 account.getJid().asBareJid() + "Not processing iq. Thread was interrupted");
1307 return;
1308 }
1309 if (packet.hasExtension(Jingle.class)
1310 && packet.getType() == Iq.Type.SET
1311 && isBound
1312 && LoginInfo.isSuccess(this.loginInfo)) {
1313 if (this.jingleListener != null) {
1314 this.jingleListener.onJinglePacketReceived(account, packet);
1315 }
1316 } else {
1317 final var callback = getIqPacketReceivedCallback(packet);
1318 if (callback == null) {
1319 Log.d(
1320 Config.LOGTAG,
1321 account.getJid().asBareJid().toString()
1322 + ": no callback registered for IQ from "
1323 + packet.getFrom());
1324 return;
1325 }
1326 try {
1327 callback.accept(packet);
1328 } catch (final StateChangingError error) {
1329 throw new StateChangingException(error.state);
1330 }
1331 }
1332 }
1333
1334 private Consumer<Iq> getIqPacketReceivedCallback(final Iq stanza)
1335 throws StateChangingException {
1336 final boolean isRequest =
1337 stanza.getType() == Iq.Type.GET || stanza.getType() == Iq.Type.SET;
1338 if (isRequest) {
1339 if (isBound && LoginInfo.isSuccess(this.loginInfo)) {
1340 return this.unregisteredIqListener;
1341 } else {
1342 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1343 }
1344 } else {
1345 synchronized (this.packetCallbacks) {
1346 final var pair = packetCallbacks.get(stanza.getId());
1347 if (pair == null) {
1348 return null;
1349 }
1350 if (pair.first.toServer(account)) {
1351 if (stanza.fromServer(account)) {
1352 packetCallbacks.remove(stanza.getId());
1353 return pair.second;
1354 } else {
1355 Log.e(
1356 Config.LOGTAG,
1357 account.getJid().asBareJid().toString()
1358 + ": ignoring spoofed iq packet");
1359 }
1360 } else {
1361 if (stanza.getFrom() != null && stanza.getFrom().equals(pair.first.getTo())) {
1362 packetCallbacks.remove(stanza.getId());
1363 return pair.second;
1364 } else {
1365 Log.e(
1366 Config.LOGTAG,
1367 account.getJid().asBareJid().toString()
1368 + ": ignoring spoofed iq packet");
1369 }
1370 }
1371 }
1372 }
1373 return null;
1374 }
1375
1376 private void processMessage(final Tag currentTag) throws IOException {
1377 final var packet =
1378 processPacket(currentTag, im.conversations.android.xmpp.model.stanza.Message.class);
1379 if (packet.isInvalid()) {
1380 Log.e(
1381 Config.LOGTAG,
1382 "encountered invalid message from='"
1383 + packet.getFrom()
1384 + "' to='"
1385 + packet.getTo()
1386 + "'");
1387 return;
1388 }
1389 if (Thread.currentThread().isInterrupted()) {
1390 Log.d(
1391 Config.LOGTAG,
1392 account.getJid().asBareJid()
1393 + "Not processing message. Thread was interrupted");
1394 return;
1395 }
1396 this.messageListener.accept(packet);
1397 }
1398
1399 private void processPresence(final Tag currentTag) throws IOException {
1400 final var packet = processPacket(currentTag, Presence.class);
1401 if (packet.isInvalid()) {
1402 Log.e(
1403 Config.LOGTAG,
1404 "encountered invalid presence from='"
1405 + packet.getFrom()
1406 + "' to='"
1407 + packet.getTo()
1408 + "'");
1409 return;
1410 }
1411 if (Thread.currentThread().isInterrupted()) {
1412 Log.d(
1413 Config.LOGTAG,
1414 account.getJid().asBareJid()
1415 + "Not processing presence. Thread was interrupted");
1416 return;
1417 }
1418 this.presenceListener.accept(packet);
1419 }
1420
1421 private void sendStartTLS() throws IOException {
1422 tagWriter.writeElement(new StartTls());
1423 }
1424
1425 private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
1426 tagReader.readElement(currentTag, Proceed.class);
1427 final Socket socket = this.socket;
1428 final SSLSocket sslSocket = upgradeSocketToTls(socket);
1429 this.socket = sslSocket;
1430 this.tagReader.setInputStream(sslSocket.getInputStream());
1431 this.tagWriter.setOutputStream(sslSocket.getOutputStream());
1432 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
1433 final boolean quickStart;
1434 try {
1435 quickStart = establishStream(SSLSockets.version(sslSocket));
1436 } catch (final InterruptedException e) {
1437 return;
1438 }
1439 if (quickStart) {
1440 this.quickStartInProgress = true;
1441 }
1442 features.encryptionEnabled = true;
1443 final Tag tag = tagReader.readTag();
1444 if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
1445 SSLSockets.log(account, sslSocket);
1446 processStream();
1447 } else {
1448 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
1449 }
1450 sslSocket.close();
1451 }
1452
1453 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
1454 final SSLSocketFactory sslSocketFactory;
1455 try {
1456 sslSocketFactory = getSSLSocketFactory();
1457 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
1458 throw new StateChangingException(Account.State.TLS_ERROR);
1459 }
1460 final InetAddress address = socket.getInetAddress();
1461 final SSLSocket sslSocket =
1462 (SSLSocket)
1463 sslSocketFactory.createSocket(
1464 socket, address.getHostAddress(), socket.getPort(), true);
1465 SSLSockets.setSecurity(sslSocket);
1466 SSLSockets.setHostname(sslSocket, IDN.toASCII(account.getServer()));
1467 SSLSockets.setApplicationProtocol(sslSocket, "xmpp-client");
1468 final XmppDomainVerifier xmppDomainVerifier = new XmppDomainVerifier();
1469 try {
1470 if (!xmppDomainVerifier.verify(
1471 account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
1472 Log.d(
1473 Config.LOGTAG,
1474 account.getJid().asBareJid()
1475 + ": TLS certificate domain verification failed");
1476 FileBackend.close(sslSocket);
1477 throw new StateChangingException(Account.State.TLS_ERROR_DOMAIN);
1478 }
1479 } catch (final SSLPeerUnverifiedException e) {
1480 FileBackend.close(sslSocket);
1481 throw new StateChangingException(Account.State.TLS_ERROR);
1482 }
1483 return sslSocket;
1484 }
1485
1486 private void processStreamFeatures(final Tag currentTag) throws IOException {
1487 final var streamFeatures =
1488 tagReader.readElement(
1489 currentTag, im.conversations.android.xmpp.model.streams.Features.class);
1490 final boolean isSecure = isSecure();
1491 if (streamFeatures.hasExtension(StartTls.class) && !features.encryptionEnabled) {
1492 sendStartTLS();
1493 return;
1494 }
1495 if (isSecure) {
1496 processSecureStreamFeatures(streamFeatures);
1497 } else {
1498 Log.d(
1499 Config.LOGTAG,
1500 account.getJid().asBareJid()
1501 + ": STARTTLS not available "
1502 + XmlHelper.printElementNames(streamFeatures));
1503 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1504 }
1505 }
1506
1507 private void processSecureStreamFeatures(
1508 final im.conversations.android.xmpp.model.streams.Features streamFeatures)
1509 throws IOException {
1510 this.streamFeatures = streamFeatures;
1511 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
1512 if (this.quickStartInProgress) {
1513 if (streamFeatures.hasStreamFeature(Authentication.class)) {
1514 Log.d(
1515 Config.LOGTAG,
1516 account.getJid().asBareJid()
1517 + ": quick start in progress. ignoring features: "
1518 + XmlHelper.printElementNames(this.streamFeatures));
1519 if (SaslMechanism.hashedToken(LoginInfo.mechanism(this.loginInfo))) {
1520 return;
1521 }
1522 if (isFastTokenAvailable(this.streamFeatures.getExtension(Authentication.class))) {
1523 Log.d(
1524 Config.LOGTAG,
1525 account.getJid().asBareJid()
1526 + ": fast token available; resetting quick start");
1527 account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false);
1528 mXmppConnectionService.databaseBackend.updateAccount(account);
1529 }
1530 return;
1531 }
1532 Log.d(
1533 Config.LOGTAG,
1534 account.getJid().asBareJid()
1535 + ": server lost support for SASL 2. quick start not possible");
1536 this.account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false);
1537 mXmppConnectionService.databaseBackend.updateAccount(account);
1538 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1539 }
1540 if (streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1541 && account.isOptionSet(Account.OPTION_REGISTER)) {
1542 register();
1543 } else if (!streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1544 && account.isOptionSet(Account.OPTION_REGISTER)) {
1545 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
1546 } else if (streamFeatures.hasStreamFeature(Authentication.class)
1547 && shouldAuthenticate
1548 && this.loginInfo == null) {
1549 authenticate(SaslMechanism.Version.SASL_2);
1550 } else if (streamFeatures.hasStreamFeature(Mechanisms.class)
1551 && shouldAuthenticate
1552 && this.loginInfo == null) {
1553 authenticate(SaslMechanism.Version.SASL);
1554 } else if (streamFeatures.streamManagement()
1555 && LoginInfo.isSuccess(loginInfo)
1556 && streamId != null
1557 && !inSmacksSession) {
1558 if (Config.EXTENDED_SM_LOGGING) {
1559 Log.d(
1560 Config.LOGTAG,
1561 account.getJid().asBareJid()
1562 + ": resuming after stanza #"
1563 + stanzasReceived);
1564 }
1565 final var streamId = this.streamId.id;
1566 final var resume = new Resume(streamId, stanzasReceived);
1567 prepareForResume(streamId);
1568 this.tagWriter.writeStanzaAsync(resume);
1569 } else if (needsBinding) {
1570 if (this.streamFeatures.hasChild("bind", Namespace.BIND)
1571 && LoginInfo.isSuccess(loginInfo)) {
1572 sendBindRequest();
1573 } else {
1574 Log.d(
1575 Config.LOGTAG,
1576 account.getJid().asBareJid()
1577 + ": unable to find bind feature "
1578 + XmlHelper.printElementNames(this.streamFeatures));
1579 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1580 }
1581 } else {
1582 Log.d(
1583 Config.LOGTAG,
1584 account.getJid().asBareJid()
1585 + ": received NOP stream features: "
1586 + XmlHelper.printElementNames(this.streamFeatures));
1587 }
1588 }
1589
1590 private void authenticate() throws IOException {
1591 final boolean isSecure = isSecure();
1592 if (isSecure && this.streamFeatures.hasStreamFeature(Authentication.class)) {
1593 authenticate(SaslMechanism.Version.SASL_2);
1594 } else if (isSecure && this.streamFeatures.hasStreamFeature(Mechanisms.class)) {
1595 authenticate(SaslMechanism.Version.SASL);
1596 } else {
1597 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1598 }
1599 }
1600
1601 private boolean isSecure() {
1602 return (features.encryptionEnabled && this.socket instanceof SSLSocket)
1603 || Config.ALLOW_NON_TLS_CONNECTIONS
1604 || account.isDirectToOnion();
1605 }
1606
1607 private void authenticate(final SaslMechanism.Version version) throws IOException {
1608 if (this.loginInfo != null) {
1609 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1610 }
1611 final AuthenticationStreamFeature authElement;
1612 if (version == SaslMechanism.Version.SASL) {
1613 authElement = this.streamFeatures.getExtension(Mechanisms.class);
1614 } else {
1615 authElement = this.streamFeatures.getExtension(Authentication.class);
1616 }
1617 final Collection<String> mechanisms = authElement.getMechanismNames();
1618 final var cbExtension = this.streamFeatures.getExtension(SaslChannelBinding.class);
1619 final Collection<ChannelBinding> channelBindings = ChannelBinding.of(cbExtension);
1620 final SaslMechanism.Factory factory = new SaslMechanism.Factory(account);
1621 final SaslMechanism saslMechanism =
1622 factory.of(mechanisms, channelBindings, version, SSLSockets.version(this.socket));
1623 this.validate(saslMechanism, mechanisms);
1624 final DowngradeProtection downgradeProtection;
1625 if (cbExtension != null) {
1626 downgradeProtection =
1627 new DowngradeProtection(mechanisms, cbExtension.getChannelBindingTypes());
1628 } else {
1629 downgradeProtection = new DowngradeProtection(mechanisms);
1630 }
1631 if (saslMechanism instanceof ScramMechanism scramMechanism) {
1632 scramMechanism.setDowngradeProtection(downgradeProtection);
1633 }
1634 final boolean quickStartAvailable;
1635 final String firstMessage =
1636 saslMechanism.getClientFirstMessage(sslSocketOrNull(this.socket));
1637 final boolean usingFast = SaslMechanism.hashedToken(saslMechanism);
1638 final AuthenticationRequest authenticate;
1639 final LoginInfo loginInfo;
1640 if (version == SaslMechanism.Version.SASL) {
1641 authenticate = new Auth();
1642 if (!Strings.isNullOrEmpty(firstMessage)) {
1643 authenticate.setContent(firstMessage);
1644 }
1645 quickStartAvailable = false;
1646 loginInfo = new LoginInfo(saslMechanism, version, Collections.emptyList());
1647 } else if (version == SaslMechanism.Version.SASL_2) {
1648 final Authentication authentication = (Authentication) authElement;
1649 final var inline = authentication.getInline();
1650 final boolean sm = inline != null && inline.hasExtension(StreamManagement.class);
1651 final HashedToken.Mechanism hashTokenRequest;
1652 if (usingFast) {
1653 hashTokenRequest = null;
1654 } else if (inline != null) {
1655 hashTokenRequest =
1656 HashedToken.Mechanism.best(
1657 inline.getFastMechanisms(), SSLSockets.version(this.socket));
1658 // TODO warn or fail early if channel binding priority isn’t high enough compared to
1659 // login mechanism
1660 // ChannelBinding.priority(hashTokenRequest.channelBinding)
1661 // <
1662 // ChannelBindingMechanism.getPriority(saslMechanism)
1663 } else {
1664 hashTokenRequest = null;
1665 }
1666 final Collection<String> bindFeatures = Bind2.features(inline);
1667 quickStartAvailable =
1668 sm
1669 && bindFeatures != null
1670 && bindFeatures.containsAll(Bind2.QUICKSTART_FEATURES);
1671 if (bindFeatures != null) {
1672 try {
1673 mXmppConnectionService.restoredFromDatabaseLatch.await();
1674 } catch (final InterruptedException e) {
1675 Log.d(
1676 Config.LOGTAG,
1677 account.getJid().asBareJid()
1678 + ": interrupted while waiting for DB restore during SASL2"
1679 + " bind");
1680 return;
1681 }
1682 }
1683 loginInfo = new LoginInfo(saslMechanism, version, bindFeatures);
1684 this.hashTokenRequest = hashTokenRequest;
1685 authenticate =
1686 generateAuthenticationRequest(
1687 firstMessage, usingFast, hashTokenRequest, bindFeatures, sm);
1688 } else {
1689 throw new AssertionError("Missing implementation for " + version);
1690 }
1691 this.loginInfo = loginInfo;
1692 if (account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, quickStartAvailable)) {
1693 mXmppConnectionService.databaseBackend.updateAccount(account);
1694 }
1695
1696 Log.d(
1697 Config.LOGTAG,
1698 account.getJid().toString()
1699 + ": Authenticating with "
1700 + version
1701 + "/"
1702 + LoginInfo.mechanism(loginInfo).getMechanism());
1703 authenticate.setMechanism(LoginInfo.mechanism(loginInfo));
1704 synchronized (this.mStanzaQueue) {
1705 this.stanzasSentBeforeAuthentication = this.stanzasSent;
1706 tagWriter.writeElement(authenticate);
1707 }
1708 }
1709
1710 private static boolean isFastTokenAvailable(final Authentication authentication) {
1711 final var inline = authentication == null ? null : authentication.getInline();
1712 return inline != null && inline.hasExtension(Fast.class);
1713 }
1714
1715 private void validate(
1716 final @Nullable SaslMechanism saslMechanism, Collection<String> mechanisms)
1717 throws StateChangingException {
1718 if (saslMechanism == null) {
1719 Log.d(
1720 Config.LOGTAG,
1721 account.getJid().asBareJid()
1722 + ": unable to find supported SASL mechanism in "
1723 + mechanisms);
1724 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1725 }
1726 checkRequireChannelBinding(saslMechanism);
1727 if (SaslMechanism.hashedToken(saslMechanism)) {
1728 return;
1729 }
1730 final int pinnedMechanism = account.getPinnedMechanismPriority();
1731 if (pinnedMechanism > saslMechanism.getPriority()) {
1732 Log.e(
1733 Config.LOGTAG,
1734 "Auth failed. Authentication mechanism "
1735 + saslMechanism.getMechanism()
1736 + " has lower priority ("
1737 + saslMechanism.getPriority()
1738 + ") than pinned priority ("
1739 + pinnedMechanism
1740 + "). Possible downgrade attack?");
1741 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
1742 }
1743 }
1744
1745 private void checkRequireChannelBinding(@NonNull final SaslMechanism mechanism)
1746 throws StateChangingException {
1747 if (appSettings.isRequireChannelBinding()) {
1748 if (mechanism instanceof ChannelBindingMechanism) {
1749 return;
1750 }
1751 Log.d(Config.LOGTAG, account.getJid() + ": server did not offer channel binding");
1752 throw new StateChangingException(Account.State.CHANNEL_BINDING);
1753 }
1754 }
1755
1756 private void checkAssignedDomainOrThrow(final Jid jid) throws StateChangingException {
1757 if (jid == null) {
1758 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": bind response is missing jid");
1759 throw new StateChangingException(Account.State.BIND_FAILURE);
1760 }
1761 final var current = this.account.getJid().getDomain();
1762 if (jid.getDomain().equals(current)) {
1763 return;
1764 }
1765 Log.d(
1766 Config.LOGTAG,
1767 account.getJid().asBareJid()
1768 + ": server tried to re-assign domain to "
1769 + jid.getDomain());
1770 throw new StateChangingException(Account.State.BIND_FAILURE);
1771 }
1772
1773 private void checkAssignedDomain(final Jid jid) {
1774 try {
1775 checkAssignedDomainOrThrow(jid);
1776 } catch (final StateChangingException e) {
1777 throw new StateChangingError(e.state);
1778 }
1779 }
1780
1781 private AuthenticationRequest generateAuthenticationRequest(
1782 final String firstMessage, final boolean usingFast) {
1783 return generateAuthenticationRequest(
1784 firstMessage, usingFast, null, Bind2.QUICKSTART_FEATURES, true);
1785 }
1786
1787 private AuthenticationRequest generateAuthenticationRequest(
1788 final String firstMessage,
1789 final boolean usingFast,
1790 final HashedToken.Mechanism hashedTokenRequest,
1791 final Collection<String> bind,
1792 final boolean inlineStreamManagement) {
1793 final var authenticate = new Authenticate();
1794 if (!Strings.isNullOrEmpty(firstMessage)) {
1795 authenticate.addChild("initial-response").setContent(firstMessage);
1796 }
1797 final var userAgent =
1798 authenticate.addExtension(
1799 new UserAgent(
1800 AccountUtils.publicDeviceId(
1801 account, appSettings.getInstallationId())));
1802 userAgent.setSoftware(
1803 String.format("%s %s", BuildConfig.APP_NAME, BuildConfig.VERSION_NAME));
1804 if (!PhoneHelper.isEmulator()) {
1805 userAgent.setDevice(String.format("%s %s", Build.MANUFACTURER, Build.MODEL));
1806 }
1807 // do not include bind if 'inlineStreamManagement' is missing and we have a streamId
1808 // (because we would rather just do a normal SM/resume)
1809 final boolean mayAttemptBind = streamId == null || inlineStreamManagement;
1810 if (bind != null && mayAttemptBind) {
1811 authenticate.addChild(generateBindRequest(bind));
1812 }
1813 if (inlineStreamManagement && streamId != null) {
1814 final var streamId = this.streamId.id;
1815 final var resume = new Resume(streamId, stanzasReceived);
1816 prepareForResume(streamId);
1817 authenticate.addExtension(resume);
1818 }
1819 if (hashedTokenRequest != null) {
1820 authenticate.addExtension(new RequestToken(hashedTokenRequest));
1821 }
1822 if (usingFast) {
1823 authenticate.addExtension(new Fast());
1824 }
1825 return authenticate;
1826 }
1827
1828 private void prepareForResume(final String streamId) {
1829 this.mSmCatchupMessageCounter.set(0);
1830 this.mWaitingForSmCatchup.set(true);
1831 this.pendingResumeId.push(streamId);
1832 }
1833
1834 private Bind generateBindRequest(final Collection<String> bindFeatures) {
1835 Log.d(Config.LOGTAG, "inline bind features: " + bindFeatures);
1836 final var bind = new Bind();
1837 bind.setTag(BuildConfig.APP_NAME);
1838 if (bindFeatures.contains(Namespace.CARBONS)) {
1839 bind.addExtension(new im.conversations.android.xmpp.model.carbons.Enable());
1840 }
1841 if (bindFeatures.contains(Namespace.STREAM_MANAGEMENT)) {
1842 bind.addExtension(new Enable());
1843 }
1844 return bind;
1845 }
1846
1847 private void register() {
1848 final String preAuth = account.getKey(Account.KEY_PRE_AUTH_REGISTRATION_TOKEN);
1849 if (preAuth != null && features.invite()) {
1850 final Iq preAuthRequest = new Iq(Iq.Type.SET);
1851 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
1852 sendUnmodifiedIqPacket(
1853 preAuthRequest,
1854 (response) -> {
1855 if (response.getType() == Iq.Type.RESULT) {
1856 sendRegistryRequest();
1857 } else {
1858 final String error = response.getErrorCondition();
1859 Log.d(
1860 Config.LOGTAG,
1861 account.getJid().asBareJid()
1862 + ": failed to pre auth. "
1863 + error);
1864 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
1865 }
1866 },
1867 true);
1868 } else {
1869 sendRegistryRequest();
1870 }
1871 }
1872
1873 private void sendRegistryRequest() {
1874 final Iq register = new Iq(Iq.Type.GET);
1875 register.query(Namespace.REGISTER);
1876 register.setTo(account.getDomain());
1877 sendUnmodifiedIqPacket(
1878 register,
1879 (packet) -> {
1880 if (packet.getType() == Iq.Type.TIMEOUT) {
1881 return;
1882 }
1883 if (packet.getType() == Iq.Type.ERROR) {
1884 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1885 }
1886 final Element query = packet.query(Namespace.REGISTER);
1887 if (query.hasChild("username") && (query.hasChild("password"))) {
1888 final Iq register1 = new Iq(Iq.Type.SET);
1889 final Element username =
1890 new Element("username").setContent(account.getUsername());
1891 final Element password =
1892 new Element("password").setContent(account.getPassword());
1893 register1.query(Namespace.REGISTER).addChild(username);
1894 register1.query().addChild(password);
1895 register1.setFrom(account.getJid().asBareJid());
1896 sendUnmodifiedIqPacket(register1, this::processRegistrationResponse, true);
1897 } else if (query.hasChild("x", Namespace.DATA)) {
1898 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
1899 final Element blob = query.findChild("data", "urn:xmpp:bob");
1900 final String id = packet.getId();
1901 InputStream is;
1902 if (blob != null) {
1903 try {
1904 final String base64Blob = blob.getContent();
1905 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
1906 is = new ByteArrayInputStream(strBlob);
1907 } catch (Exception e) {
1908 is = null;
1909 }
1910 } else {
1911 final boolean useTor = this.appSettings.isUseTor() || account.isOnion();
1912 try {
1913 final String url = data.getValue("url");
1914 final String fallbackUrl = data.getValue("captcha-fallback-url");
1915 if (url != null) {
1916 is = HttpConnectionManager.open(url, useTor);
1917 } else if (fallbackUrl != null) {
1918 is = HttpConnectionManager.open(fallbackUrl, useTor);
1919 } else {
1920 is = null;
1921 }
1922 } catch (final IOException e) {
1923 Log.d(
1924 Config.LOGTAG,
1925 account.getJid().asBareJid() + ": unable to fetch captcha",
1926 e);
1927 is = null;
1928 }
1929 }
1930
1931 if (is != null) {
1932 Bitmap captcha = BitmapFactory.decodeStream(is);
1933 try {
1934 if (mXmppConnectionService.displayCaptchaRequest(
1935 account, id, data, captcha)) {
1936 return;
1937 }
1938 } catch (Exception e) {
1939 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1940 }
1941 }
1942 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1943 } else if (query.hasChild("instructions")
1944 || query.hasChild("x", Namespace.OOB)) {
1945 final String instructions = query.findChildContent("instructions");
1946 final Element oob = query.findChild("x", Namespace.OOB);
1947 final String url = oob == null ? null : oob.findChildContent("url");
1948 if (url != null) {
1949 setAccountCreationFailed(url);
1950 } else if (instructions != null) {
1951 final Matcher matcher = Patterns.URI_HTTP.matcher(instructions);
1952 if (matcher.find()) {
1953 setAccountCreationFailed(
1954 instructions.substring(matcher.start(), matcher.end()));
1955 }
1956 }
1957 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1958 }
1959 },
1960 true);
1961 }
1962
1963 public void sendCreateAccountWithCaptchaPacket(final String id, final Data data) {
1964 final Iq request = IqGenerator.generateCreateAccountWithCaptcha(account, id, data);
1965 this.sendUnmodifiedIqPacket(request, this::processRegistrationResponse, true);
1966 }
1967
1968 private void processRegistrationResponse(final Iq response) {
1969 if (response.getType() == Iq.Type.RESULT) {
1970 account.setOption(Account.OPTION_REGISTER, false);
1971 Log.d(
1972 Config.LOGTAG,
1973 account.getJid().asBareJid()
1974 + ": successfully registered new account on server");
1975 throw new StateChangingError(Account.State.REGISTRATION_SUCCESSFUL);
1976 } else {
1977 final Account.State state = getRegistrationFailedState(response);
1978 throw new StateChangingError(state);
1979 }
1980 }
1981
1982 @NonNull
1983 private static Account.State getRegistrationFailedState(final Iq response) {
1984 final List<String> PASSWORD_TOO_WEAK_MESSAGES =
1985 Arrays.asList("The password is too weak", "Please use a longer password.");
1986 final var error = response.getError();
1987 final var condition = error == null ? null : error.getCondition();
1988 final Account.State state;
1989 if (condition instanceof Condition.Conflict) {
1990 state = Account.State.REGISTRATION_CONFLICT;
1991 } else if (condition instanceof Condition.ResourceConstraint) {
1992 state = Account.State.REGISTRATION_PLEASE_WAIT;
1993 } else if (condition instanceof Condition.NotAcceptable
1994 && PASSWORD_TOO_WEAK_MESSAGES.contains(error.getTextAsString())) {
1995 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
1996 } else {
1997 state = Account.State.REGISTRATION_FAILED;
1998 }
1999 return state;
2000 }
2001
2002 private void setAccountCreationFailed(final String url) {
2003 final HttpUrl httpUrl = url == null ? null : HttpUrl.parse(url);
2004 if (httpUrl != null && httpUrl.isHttps()) {
2005 this.redirectionUrl = httpUrl;
2006 throw new StateChangingError(Account.State.REGISTRATION_WEB);
2007 }
2008 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
2009 }
2010
2011 public HttpUrl getRedirectionUrl() {
2012 return this.redirectionUrl;
2013 }
2014
2015 public void resetEverything() {
2016 resetAttemptCount(true);
2017 resetStreamId();
2018 clearIqCallbacks();
2019 synchronized (this.mStanzaQueue) {
2020 this.stanzasSent = 0;
2021 this.mStanzaQueue.clear();
2022 }
2023 this.redirectionUrl = null;
2024 getManager(DiscoManager.class).clear();
2025 synchronized (this.commands) {
2026 this.commands.clear();
2027 }
2028 this.loginInfo = null;
2029 }
2030
2031 private void sendBindRequest() {
2032 try {
2033 mXmppConnectionService.restoredFromDatabaseLatch.await();
2034 } catch (InterruptedException e) {
2035 Log.d(
2036 Config.LOGTAG,
2037 account.getJid().asBareJid()
2038 + ": interrupted while waiting for DB restore during bind");
2039 return;
2040 }
2041 clearIqCallbacks();
2042 if (account.getJid().isBareJid()) {
2043 account.setResource(createNewResource());
2044 } else {
2045 fixResource(mXmppConnectionService, account);
2046 }
2047 final Iq iq = new Iq(Iq.Type.SET);
2048 final String resource =
2049 Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND
2050 ? CryptoHelper.random(9)
2051 : account.getResource();
2052 iq.addExtension(new im.conversations.android.xmpp.model.bind.Bind()).setResource(resource);
2053 this.sendUnmodifiedIqPacket(
2054 iq,
2055 (packet) -> {
2056 if (packet.getType() == Iq.Type.TIMEOUT) {
2057 return;
2058 }
2059 final var bind =
2060 packet.getExtension(
2061 im.conversations.android.xmpp.model.bind.Bind.class);
2062 if (bind != null && packet.getType() == Iq.Type.RESULT) {
2063 isBound = true;
2064 final Jid assignedJid = bind.getJid();
2065 checkAssignedDomain(assignedJid);
2066 if (account.setJid(assignedJid)) {
2067 Log.d(
2068 Config.LOGTAG,
2069 account.getJid().asBareJid()
2070 + ": jid changed during bind. updating database");
2071 mXmppConnectionService.databaseBackend.updateAccount(account);
2072 }
2073 if (streamFeatures.hasChild("session")
2074 && !streamFeatures.findChild("session").hasChild("optional")) {
2075 sendStartSession();
2076 } else {
2077 final boolean waitForDisco = enableStreamManagement();
2078 sendPostBindInitialization(waitForDisco, false);
2079 }
2080 } else {
2081 Log.d(
2082 Config.LOGTAG,
2083 account.getJid()
2084 + ": disconnecting because of bind failure ("
2085 + packet);
2086 final var error = packet.getError();
2087 // TODO error.is(Condition)
2088 if (packet.getType() == Iq.Type.ERROR
2089 && error != null
2090 && error.hasChild("conflict")) {
2091 account.setResource(createNewResource());
2092 }
2093 throw new StateChangingError(Account.State.BIND_FAILURE);
2094 }
2095 },
2096 true);
2097 }
2098
2099 private void clearIqCallbacks() {
2100 final Iq failurePacket = new Iq(Iq.Type.TIMEOUT);
2101 final ArrayList<Consumer<Iq>> callbacks = new ArrayList<>();
2102 synchronized (this.packetCallbacks) {
2103 if (this.packetCallbacks.isEmpty()) {
2104 return;
2105 }
2106 Log.d(
2107 Config.LOGTAG,
2108 account.getJid().asBareJid()
2109 + ": clearing "
2110 + this.packetCallbacks.size()
2111 + " iq callbacks");
2112 final var iterator = this.packetCallbacks.values().iterator();
2113 while (iterator.hasNext()) {
2114 final var entry = iterator.next();
2115 callbacks.add(entry.second);
2116 iterator.remove();
2117 }
2118 }
2119 for (final var callback : callbacks) {
2120 try {
2121 callback.accept(failurePacket);
2122 } catch (StateChangingError error) {
2123 Log.d(
2124 Config.LOGTAG,
2125 account.getJid().asBareJid()
2126 + ": caught StateChangingError("
2127 + error.state.toString()
2128 + ") while clearing callbacks");
2129 // ignore
2130 }
2131 }
2132 Log.d(
2133 Config.LOGTAG,
2134 account.getJid().asBareJid()
2135 + ": done clearing iq callbacks. "
2136 + this.packetCallbacks.size()
2137 + " left");
2138 }
2139
2140 public void sendDiscoTimeout() {
2141 if (mWaitForDisco.compareAndSet(true, false)) {
2142 Log.d(
2143 Config.LOGTAG,
2144 account.getJid().asBareJid() + ": finalizing bind after disco timeout");
2145 finalizeBind();
2146 }
2147 }
2148
2149 private void sendStartSession() {
2150 Log.d(
2151 Config.LOGTAG,
2152 account.getJid().asBareJid() + ": sending legacy session to outdated server");
2153 final Iq startSession = new Iq(Iq.Type.SET);
2154 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
2155 this.sendUnmodifiedIqPacket(
2156 startSession,
2157 (packet) -> {
2158 if (packet.getType() == Iq.Type.RESULT) {
2159 final boolean waitForDisco = enableStreamManagement();
2160 sendPostBindInitialization(waitForDisco, false);
2161 } else if (packet.getType() != Iq.Type.TIMEOUT) {
2162 throw new StateChangingError(Account.State.SESSION_FAILURE);
2163 }
2164 },
2165 true);
2166 }
2167
2168 private boolean enableStreamManagement() {
2169 final boolean streamManagement = this.streamFeatures.streamManagement();
2170 if (streamManagement) {
2171 synchronized (this.mStanzaQueue) {
2172 final var enable = new Enable();
2173 tagWriter.writeStanzaAsync(enable);
2174 stanzasSent = 0;
2175 mStanzaQueue.clear();
2176 }
2177 return true;
2178 } else {
2179 return false;
2180 }
2181 }
2182
2183 private void sendPostBindInitialization(
2184 final boolean waitForDisco, final boolean carbonsEnabled) {
2185 getManager(CarbonsManager.class).setEnabledOnBind(carbonsEnabled);
2186 features.blockListRequested = false;
2187 getManager(DiscoManager.class).clear();
2188 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
2189 mWaitForDisco.set(waitForDisco);
2190 this.lastDiscoStarted = SystemClock.elapsedRealtime();
2191 mXmppConnectionService.scheduleWakeUpCall(
2192 Config.CONNECT_DISCO_TIMEOUT * 1000L, account.getUuid().hashCode());
2193
2194 final var nodeHash = streamFeatures.getCapabilities();
2195 final var serverInfoFuture =
2196 getManager(DiscoManager.class)
2197 .infoOrCache(Entity.discoItem(account.getDomain()), nodeHash);
2198
2199 final var features = getFeatures();
2200 if (!features.bind2()) {
2201 discoverMamPreferences();
2202 }
2203
2204 final var accountInfoFuture =
2205 getManager(DiscoManager.class)
2206 .info(Entity.discoItem(account.getJid().asBareJid()), null);
2207
2208 final var itemsFuture =
2209 getManager(DiscoManager.class).itemsWithInfo(Entity.discoItem(account.getDomain()));
2210
2211 final var catchingServerFuture =
2212 Futures.catching(
2213 serverInfoFuture,
2214 DiscoManager.CapsHashMismatchException.class,
2215 input -> {
2216 Log.d(
2217 Config.LOGTAG,
2218 account.getJid().asBareJid() + ": error in server caps",
2219 input);
2220 return null;
2221 },
2222 MoreExecutors.directExecutor());
2223
2224 Futures.addCallback(
2225 Futures.allAsList(accountInfoFuture, catchingServerFuture),
2226 new FutureCallback<>() {
2227 @Override
2228 public void onSuccess(List<Object> result) {
2229 Log.d(
2230 Config.LOGTAG,
2231 account.getJid().asBareJid() + ": advanced stream future done");
2232 enableAdvancedStreamFeatures();
2233 }
2234
2235 @Override
2236 public void onFailure(@Nullable Throwable throwable) {
2237 Log.d(
2238 Config.LOGTAG,
2239 "could not fetch disco for advanced stream features",
2240 throwable);
2241 }
2242 },
2243 MoreExecutors.directExecutor());
2244
2245 if (mWaitForDisco.get()) {
2246 final ListenableFuture<Void> discoComplete =
2247 Futures.whenAllComplete(serverInfoFuture, accountInfoFuture, itemsFuture)
2248 .call(() -> null, MoreExecutors.directExecutor());
2249 Futures.addCallback(
2250 discoComplete,
2251 new FutureCallback<>() {
2252 @Override
2253 public void onSuccess(Void result) {
2254 if (timeout(serverInfoFuture, accountInfoFuture, itemsFuture)) {
2255 Log.d(
2256 Config.LOGTAG,
2257 account.getJid().asBareJid()
2258 + ": reached timeout while waiting for disco");
2259 return;
2260 }
2261 if (mWaitForDisco.compareAndSet(true, false)) {
2262 finalizeBindOrError();
2263 } else {
2264 Log.d(
2265 Config.LOGTAG,
2266 account.getJid().asBareJid()
2267 + ": disco complete but bind was already"
2268 + " finalized");
2269 }
2270 }
2271
2272 @Override
2273 public void onFailure(@NonNull Throwable t) {
2274 Log.d(Config.LOGTAG, "error in disco: ", t);
2275 }
2276 },
2277 MoreExecutors.directExecutor());
2278 } else {
2279 finalizeBind();
2280 }
2281
2282 if (!mWaitForDisco.get()) {
2283 finalizeBind();
2284 }
2285 this.lastSessionStarted = SystemClock.elapsedRealtime();
2286 }
2287
2288 private boolean timeout(final ListenableFuture<?>... futures) {
2289 for (final ListenableFuture<?> future : futures) {
2290 if (future.isDone()) {
2291 try {
2292 future.get();
2293 } catch (final Exception e) {
2294 if (Throwables.getRootCause(e) instanceof TimeoutException) {
2295 return true;
2296 }
2297 }
2298 }
2299 }
2300 return false;
2301 }
2302
2303 private void discoverMamPreferences() {
2304 final Iq request = new Iq(Iq.Type.GET);
2305 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
2306 sendIqPacket(
2307 request,
2308 (response) -> {
2309 if (response.getType() == Iq.Type.RESULT) {
2310 Element prefs =
2311 response.findChild(
2312 "prefs", MessageArchiveService.Version.MAM_2.namespace);
2313 isMamPreferenceAlways =
2314 "always"
2315 .equals(
2316 prefs == null
2317 ? null
2318 : prefs.getAttribute("default"));
2319 }
2320 });
2321 }
2322
2323 private void discoverCommands() {
2324 // TODO move result handling into DiscoManager too
2325 final var future =
2326 getManager(DiscoManager.class).commands(Entity.discoItem(account.getDomain()));
2327 Futures.addCallback(
2328 future,
2329 new FutureCallback<>() {
2330 @Override
2331 public void onSuccess(Map<String, Jid> result) {
2332 synchronized (XmppConnection.this.commands) {
2333 XmppConnection.this.commands.clear();
2334 XmppConnection.this.commands.putAll(result);
2335 }
2336 }
2337
2338 @Override
2339 public void onFailure(@NonNull Throwable throwable) {
2340 Log.d(
2341 Config.LOGTAG,
2342 account.getJid().asBareJid() + ": could not fetch commands",
2343 throwable);
2344 }
2345 },
2346 MoreExecutors.directExecutor());
2347 }
2348
2349 public boolean isMamPreferenceAlways() {
2350 return isMamPreferenceAlways;
2351 }
2352
2353 private void finalizeBindOrError() {
2354 try {
2355 finalizeBind();
2356 } catch (final Exception e) {
2357 throw new Error(e);
2358 }
2359 }
2360
2361 private void finalizeBind() {
2362 this.offlineMessagesRetrieved = false;
2363 this.bindProcessor.run();
2364 this.changeStatusToOnline();
2365 }
2366
2367 private void enableAdvancedStreamFeatures() {
2368 final var blockingManager = getManager(BlockingManager.class);
2369 if (blockingManager.hasFeature()) {
2370 blockingManager.request();
2371 }
2372 for (final OnAdvancedStreamFeaturesLoaded listener :
2373 advancedStreamFeaturesLoadedListeners) {
2374 listener.onAdvancedStreamFeaturesAvailable(account);
2375 }
2376 final var carbonsManager = getManager(CarbonsManager.class);
2377 if (carbonsManager.hasFeature() && !carbonsManager.isEnabled()) {
2378 carbonsManager.enable();
2379 }
2380 if (getFeatures().commands()) {
2381 discoverCommands();
2382 }
2383 }
2384
2385 private void processStreamError(final StreamError streamError) throws IOException {
2386 final var loginInfo = this.loginInfo;
2387 final var isSecureLoggedIn = isSecure() && LoginInfo.isSuccess(loginInfo);
2388 if (isSecureLoggedIn && streamError.hasChild("conflict")) {
2389 if (loginInfo.saslVersion == SaslMechanism.Version.SASL_2) {
2390 this.appSettings.resetInstallationId();
2391 }
2392 account.setResource(createNewResource());
2393 Log.d(
2394 Config.LOGTAG,
2395 account.getJid().asBareJid()
2396 + ": switching resource due to conflict ("
2397 + account.getResource()
2398 + ")");
2399 throw new IOException("Closed stream due to resource conflict");
2400 } else if (streamError.hasChild("host-unknown")) {
2401 throw new StateChangingException(Account.State.HOST_UNKNOWN);
2402 } else if (streamError.hasChild("policy-violation")) {
2403 this.lastConnectionStarted = SystemClock.elapsedRealtime();
2404 final String text = streamError.findChildContent("text");
2405 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": policy violation. " + text);
2406 if (isSecureLoggedIn) {
2407 failPendingMessages(text);
2408 }
2409 throw new StateChangingException(Account.State.POLICY_VIOLATION);
2410 } else if (streamError.hasChild("see-other-host")) {
2411 final String seeOtherHost = streamError.findChildContent("see-other-host");
2412 final Resolver.Result currentResolverResult = this.currentResolverResult;
2413 if (Strings.isNullOrEmpty(seeOtherHost) || currentResolverResult == null) {
2414 Log.d(
2415 Config.LOGTAG,
2416 account.getJid().asBareJid() + ": stream error " + streamError);
2417 throw new StateChangingException(Account.State.STREAM_ERROR);
2418 }
2419 Log.d(
2420 Config.LOGTAG,
2421 account.getJid().asBareJid()
2422 + ": see other host: "
2423 + seeOtherHost
2424 + " "
2425 + currentResolverResult);
2426 final Resolver.Result seeOtherResult = currentResolverResult.seeOtherHost(seeOtherHost);
2427 if (seeOtherResult != null) {
2428 this.seeOtherHostResolverResult = seeOtherResult;
2429 throw new StateChangingException(Account.State.SEE_OTHER_HOST);
2430 } else {
2431 throw new StateChangingException(Account.State.STREAM_ERROR);
2432 }
2433 } else {
2434 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError);
2435 throw new StateChangingException(Account.State.STREAM_ERROR);
2436 }
2437 }
2438
2439 private void failPendingMessages(final String error) {
2440 synchronized (this.mStanzaQueue) {
2441 for (int i = 0; i < mStanzaQueue.size(); ++i) {
2442 final Stanza stanza = mStanzaQueue.valueAt(i);
2443 if (stanza instanceof im.conversations.android.xmpp.model.stanza.Message packet) {
2444 final String id = packet.getId();
2445 final Jid to = packet.getTo();
2446 mXmppConnectionService.markMessage(
2447 account, to.asBareJid(), id, Message.STATUS_SEND_FAILED, error);
2448 }
2449 }
2450 }
2451 }
2452
2453 private boolean establishStream(final SSLSockets.Version sslVersion)
2454 throws IOException, InterruptedException {
2455 final boolean secureConnection = sslVersion != SSLSockets.Version.NONE;
2456 final SaslMechanism quickStartMechanism;
2457 if (secureConnection) {
2458 quickStartMechanism =
2459 SaslMechanism.ensureAvailable(
2460 account.getQuickStartMechanism(),
2461 sslVersion,
2462 appSettings.isRequireChannelBinding());
2463 } else {
2464 quickStartMechanism = null;
2465 }
2466 if (secureConnection
2467 && Config.QUICKSTART_ENABLED
2468 && quickStartMechanism != null
2469 && account.isOptionSet(Account.OPTION_QUICKSTART_AVAILABLE)) {
2470 mXmppConnectionService.restoredFromDatabaseLatch.await();
2471 this.loginInfo =
2472 new LoginInfo(
2473 quickStartMechanism,
2474 SaslMechanism.Version.SASL_2,
2475 Bind2.QUICKSTART_FEATURES);
2476 final boolean usingFast = quickStartMechanism instanceof HashedToken;
2477 final AuthenticationRequest authenticate =
2478 generateAuthenticationRequest(
2479 quickStartMechanism.getClientFirstMessage(sslSocketOrNull(this.socket)),
2480 usingFast);
2481 authenticate.setMechanism(quickStartMechanism);
2482 sendStartStream(true, false);
2483 synchronized (this.mStanzaQueue) {
2484 this.stanzasSentBeforeAuthentication = this.stanzasSent;
2485 tagWriter.writeElement(authenticate);
2486 }
2487 Log.d(
2488 Config.LOGTAG,
2489 account.getJid().toString()
2490 + ": quick start with "
2491 + quickStartMechanism.getMechanism());
2492 return true;
2493 } else {
2494 sendStartStream(secureConnection, true);
2495 return false;
2496 }
2497 }
2498
2499 private void sendStartStream(final boolean from, final boolean flush) throws IOException {
2500 final Tag stream = Tag.start("stream:stream");
2501 stream.setAttribute("to", account.getServer());
2502 if (from) {
2503 stream.setAttribute("from", account.getJid().asBareJid().toString());
2504 }
2505 stream.setAttribute("version", "1.0");
2506 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
2507 stream.setAttribute("xmlns", Namespace.JABBER_CLIENT);
2508 stream.setAttribute("xmlns:stream", Namespace.STREAMS);
2509 tagWriter.writeTag(stream, flush);
2510 }
2511
2512 private static String createNewResource() {
2513 return String.format("%s.%s", BuildConfig.APP_NAME, CryptoHelper.random(3));
2514 }
2515
2516 public void sendRequestStanza() {
2517 this.sendPacket(new Request());
2518 }
2519
2520 public ListenableFuture<Iq> sendIqPacket(final Iq request) {
2521 final SettableFuture<Iq> settable = SettableFuture.create();
2522 this.sendIqPacket(
2523 request,
2524 response -> {
2525 final var type = response.getType();
2526 switch (type) {
2527 case RESULT -> settable.set(response);
2528 case TIMEOUT -> settable.setException(new TimeoutException());
2529 default -> settable.setException(new IqErrorException(response));
2530 }
2531 });
2532 return settable;
2533 }
2534
2535 public String sendIqPacket(final Iq packet, final Consumer<Iq> callback) {
2536 packet.setFrom(account.getJid());
2537 return this.sendUnmodifiedIqPacket(packet, callback, false);
2538 }
2539
2540 public synchronized String sendUnmodifiedIqPacket(
2541 final Iq packet, final Consumer<Iq> callback, boolean force) {
2542 // TODO if callback != null verify that type is get or set
2543 if (packet.getId() == null) {
2544 packet.setId(CryptoHelper.random(9));
2545 }
2546 if (callback != null) {
2547 synchronized (this.packetCallbacks) {
2548 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
2549 }
2550 }
2551 this.sendPacket(packet, force);
2552 return packet.getId();
2553 }
2554
2555 public void sendResultFor(final Iq request, final Extension... extensions) {
2556 final var from = request.getFrom();
2557 final var id = request.getId();
2558 final var response = new Iq(Iq.Type.RESULT);
2559 response.setTo(from);
2560 response.setId(id);
2561 for (final Extension extension : extensions) {
2562 response.addExtension(extension);
2563 }
2564 this.sendPacket(response);
2565 }
2566
2567 public void sendErrorFor(
2568 final Iq request,
2569 final im.conversations.android.xmpp.model.error.Error.Type type,
2570 final Condition condition,
2571 final im.conversations.android.xmpp.model.error.Error.Extension... extensions) {
2572 final var from = request.getFrom();
2573 final var id = request.getId();
2574 final var response = new Iq(Iq.Type.ERROR);
2575 response.setTo(from);
2576 response.setId(id);
2577 final var error =
2578 response.addExtension(new im.conversations.android.xmpp.model.error.Error());
2579 error.setType(type);
2580 error.setCondition(condition);
2581 error.addExtensions(extensions);
2582 this.sendPacket(response);
2583 }
2584
2585 public void sendMessagePacket(final im.conversations.android.xmpp.model.stanza.Message packet) {
2586 this.sendPacket(packet);
2587 }
2588
2589 public void sendPresencePacket(final Presence packet) {
2590 this.sendPacket(packet);
2591 }
2592
2593 private synchronized void sendPacket(final StreamElement packet) {
2594 sendPacket(packet, false);
2595 }
2596
2597 private synchronized void sendPacket(final StreamElement packet, final boolean force) {
2598 if (stanzasSent == Integer.MAX_VALUE) {
2599 resetStreamId();
2600 disconnect(true);
2601 return;
2602 }
2603 synchronized (this.mStanzaQueue) {
2604 if (force || isBound) {
2605 tagWriter.writeStanzaAsync(packet);
2606 } else {
2607 Log.d(
2608 Config.LOGTAG,
2609 account.getJid().asBareJid()
2610 + " do not write stanza to unbound stream "
2611 + packet.toString());
2612 }
2613 if (packet instanceof Stanza stanza) {
2614 if (this.mStanzaQueue.size() != 0) {
2615 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
2616 if (currentHighestKey != stanzasSent) {
2617 throw new AssertionError("Stanza count messed up");
2618 }
2619 }
2620
2621 ++stanzasSent;
2622 if (Config.EXTENDED_SM_LOGGING) {
2623 Log.d(
2624 Config.LOGTAG,
2625 account.getJid().asBareJid()
2626 + ": counting outbound "
2627 + packet.getName()
2628 + " as #"
2629 + stanzasSent);
2630 }
2631 this.mStanzaQueue.append(stanzasSent, stanza);
2632 if (stanza instanceof im.conversations.android.xmpp.model.stanza.Message
2633 && stanza.getId() != null
2634 && inSmacksSession) {
2635 if (Config.EXTENDED_SM_LOGGING) {
2636 Log.d(
2637 Config.LOGTAG,
2638 account.getJid().asBareJid()
2639 + ": requesting ack for message stanza #"
2640 + stanzasSent);
2641 }
2642 tagWriter.writeStanzaAsync(new Request());
2643 }
2644 }
2645 }
2646 }
2647
2648 public void sendPing() {
2649 this.getManager(PingManager.class).ping();
2650 this.lastPingSent = SystemClock.elapsedRealtime();
2651 }
2652
2653 public void setOnJinglePacketReceivedListener(final OnJinglePacketReceived listener) {
2654 this.jingleListener = listener;
2655 }
2656
2657 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
2658 this.acknowledgedListener = listener;
2659 }
2660
2661 public void addOnAdvancedStreamFeaturesAvailableListener(
2662 final OnAdvancedStreamFeaturesLoaded listener) {
2663 this.advancedStreamFeaturesLoadedListeners.add(listener);
2664 }
2665
2666 private void forceCloseSocket() {
2667 FileBackend.close(this.socket);
2668 FileBackend.close(this.tagReader);
2669 }
2670
2671 public void interrupt() {
2672 if (this.mThread != null) {
2673 this.mThread.interrupt();
2674 }
2675 }
2676
2677 public void disconnect(final boolean force) {
2678 interrupt();
2679 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
2680 if (force) {
2681 forceCloseSocket();
2682 } else {
2683 final TagWriter currentTagWriter = this.tagWriter;
2684 if (currentTagWriter.isActive()) {
2685 currentTagWriter.finish();
2686 final Socket currentSocket = this.socket;
2687 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
2688 try {
2689 currentTagWriter.await(1, TimeUnit.SECONDS);
2690 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
2691 currentTagWriter.writeTag(Tag.end("stream:stream"));
2692 if (streamCountDownLatch != null) {
2693 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
2694 Log.d(
2695 Config.LOGTAG,
2696 account.getJid().asBareJid() + ": remote ended stream");
2697 } else {
2698 Log.d(
2699 Config.LOGTAG,
2700 account.getJid().asBareJid()
2701 + ": remote has not closed socket. force closing");
2702 }
2703 }
2704 } catch (InterruptedException e) {
2705 Log.d(
2706 Config.LOGTAG,
2707 account.getJid().asBareJid()
2708 + ": interrupted while gracefully closing stream");
2709 } catch (final IOException e) {
2710 Log.d(
2711 Config.LOGTAG,
2712 account.getJid().asBareJid()
2713 + ": io exception during disconnect ("
2714 + e.getMessage()
2715 + ")");
2716 } finally {
2717 FileBackend.close(currentSocket);
2718 }
2719 } else {
2720 forceCloseSocket();
2721 }
2722 }
2723 }
2724
2725 private void resetStreamId() {
2726 this.pendingResumeId.clear();
2727 this.streamId = null;
2728 this.boundStreamFeatures = null;
2729 }
2730
2731 public <M extends AbstractManager> M getManager(final Class<M> clazz) {
2732 return this.managers.getInstance(clazz);
2733 }
2734
2735 private List<Entry<Jid, InfoQuery>> findDiscoItemsByFeature(final String feature) {
2736 final List<Entry<Jid, InfoQuery>> items = new ArrayList<>();
2737 for (final Entry<Jid, InfoQuery> cursor :
2738 getManager(DiscoManager.class).getServerItems().entrySet()) {
2739 if (cursor.getValue().getFeatureStrings().contains(feature)) {
2740 items.add(cursor);
2741 }
2742 }
2743 return items;
2744 }
2745
2746 public Entry<Jid, InfoQuery> getServiceDiscoveryResultByFeature(final String feature) {
2747 return Iterables.getFirst(findDiscoItemsByFeature(feature), null);
2748 }
2749
2750 public Jid findDiscoItemByFeature(final String feature) {
2751 final var items = findDiscoItemsByFeature(feature);
2752 if (items.isEmpty()) {
2753 return null;
2754 }
2755 return Iterables.getFirst(items, null).getKey();
2756 }
2757
2758 public List<String> getMucServersWithholdAccount() {
2759 final List<String> servers = getMucServers();
2760 servers.remove(account.getDomain().toString());
2761 return servers;
2762 }
2763
2764 public List<String> getMucServers() {
2765 List<String> servers = new ArrayList<>();
2766 for (final Entry<Jid, InfoQuery> entry :
2767 getManager(DiscoManager.class).getServerItems().entrySet()) {
2768 final var value = entry.getValue();
2769 if (value.getFeatureStrings().contains("http://jabber.org/protocol/muc")
2770 && value.hasIdentityWithCategoryAndType("conference", "text")
2771 && !value.getFeatureStrings().contains("jabber:iq:gateway")
2772 && !value.hasIdentityWithCategoryAndType("conference", "irc")) {
2773 servers.add(entry.getKey().toString());
2774 }
2775 }
2776 return servers;
2777 }
2778
2779 public String getMucServer() {
2780 return Iterables.getFirst(getMucServers(), null);
2781 }
2782
2783 public int getTimeToNextAttempt(final boolean aggressive) {
2784 final int interval;
2785 if (aggressive) {
2786 interval = Math.min((int) (3 * Math.pow(1.3, attempt)), 60);
2787 } else {
2788 final int additionalTime =
2789 account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
2790 interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
2791 }
2792 final var connectionDuration = Ints.saturatedCast(getConnectionDuration() / 1000);
2793 return interval - connectionDuration;
2794 }
2795
2796 public int getAttempt() {
2797 return this.attempt;
2798 }
2799
2800 public Features getFeatures() {
2801 return this.features;
2802 }
2803
2804 public long getLastSessionEstablished() {
2805 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
2806 return System.currentTimeMillis() - diff;
2807 }
2808
2809 public long getConnectionDuration() {
2810 return SystemClock.elapsedRealtime() - this.lastConnectionStarted;
2811 }
2812
2813 public long getDiscoDuration() {
2814 return SystemClock.elapsedRealtime() - this.lastDiscoStarted;
2815 }
2816
2817 public long getLastPingSent() {
2818 return this.lastPingSent;
2819 }
2820
2821 public long getLastPacketReceived() {
2822 return this.lastPacketReceived;
2823 }
2824
2825 public void sendActive() {
2826 this.sendPacket(new Active());
2827 }
2828
2829 public void sendInactive() {
2830 this.sendPacket(new Inactive());
2831 }
2832
2833 public void resetAttemptCount(boolean resetConnectTime) {
2834 this.attempt = 0;
2835 if (resetConnectTime) {
2836 this.lastConnectionStarted = 0;
2837 }
2838 }
2839
2840 public void setInteractive(boolean interactive) {
2841 this.mInteractive = interactive;
2842 }
2843
2844 public void trackOfflineMessageRetrieval(boolean trackOfflineMessageRetrieval) {
2845 if (trackOfflineMessageRetrieval) {
2846 getManager(PingManager.class)
2847 .ping(
2848 () -> {
2849 Log.d(
2850 Config.LOGTAG,
2851 account.getJid().asBareJid()
2852 + ": got ping response after sending initial"
2853 + " presence");
2854 this.offlineMessagesRetrieved = true;
2855 });
2856 } else {
2857 this.offlineMessagesRetrieved = true;
2858 }
2859 }
2860
2861 public boolean isOfflineMessagesRetrieved() {
2862 return this.offlineMessagesRetrieved;
2863 }
2864
2865 public void triggerConnectionTimeout() {
2866 final var duration = getConnectionDuration();
2867 Log.d(
2868 Config.LOGTAG,
2869 account.getJid().asBareJid() + ": connection timeout after " + duration + "ms");
2870
2871 // last connection time gets reset so time to next attempt is calculated correctly
2872 this.lastConnectionStarted = SystemClock.elapsedRealtime();
2873
2874 // interrupt needs to be called before status change; otherwise we interrupt the newly
2875 // created thread
2876 this.interrupt();
2877 this.forceCloseSocket();
2878 this.changeStatus(Account.State.CONNECTION_TIMEOUT);
2879 }
2880
2881 public Account getAccount() {
2882 return this.account;
2883 }
2884
2885 public Features getStreamFeatures() {
2886 return this.features;
2887 }
2888
2889 public boolean fromServer(final Stanza stanza) {
2890 final var account = getAccount().getJid();
2891 final Jid from = stanza.getFrom();
2892 return from == null
2893 || from.equals(account.getDomain())
2894 || from.equals(account.asBareJid())
2895 || from.equals(account);
2896 }
2897
2898 public boolean fromAccount(final Stanza stanza) {
2899 final var account = getAccount().getJid();
2900 final Jid from = stanza.getFrom();
2901 return from == null || from.asBareJid().equals(account.asBareJid());
2902 }
2903
2904 public AxolotlService getAxolotlService() {
2905 return this.axolotlService;
2906 }
2907
2908 public PgpDecryptionService getPgpDecryptionService() {
2909 return this.pgpDecryptionService;
2910 }
2911
2912 public void setAxolotlService(AxolotlService axolotlService) {
2913 final var current = this.axolotlService;
2914 if (current != null) {
2915 this.advancedStreamFeaturesLoadedListeners.remove(current);
2916 }
2917 this.axolotlService = axolotlService;
2918 this.addOnAdvancedStreamFeaturesAvailableListener(axolotlService);
2919 }
2920
2921 public void setStatusAndTriggerProcessor(final Account.State state) {
2922 this.account.setStatus(state);
2923 this.accountStateProcessor.accept(state);
2924 }
2925
2926 private class MyKeyManager implements X509KeyManager {
2927 @Override
2928 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
2929 return account.getPrivateKeyAlias();
2930 }
2931
2932 @Override
2933 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
2934 return null;
2935 }
2936
2937 @Override
2938 public X509Certificate[] getCertificateChain(String alias) {
2939 Log.d(Config.LOGTAG, "getting certificate chain");
2940 try {
2941 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
2942 } catch (final Exception e) {
2943 Log.d(Config.LOGTAG, "could not get certificate chain", e);
2944 return new X509Certificate[0];
2945 }
2946 }
2947
2948 @Override
2949 public String[] getClientAliases(String s, Principal[] principals) {
2950 final String alias = account.getPrivateKeyAlias();
2951 return alias != null ? new String[] {alias} : new String[0];
2952 }
2953
2954 @Override
2955 public String[] getServerAliases(String s, Principal[] principals) {
2956 return new String[0];
2957 }
2958
2959 @Override
2960 public PrivateKey getPrivateKey(String alias) {
2961 try {
2962 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
2963 } catch (Exception e) {
2964 return null;
2965 }
2966 }
2967 }
2968
2969 private static class LoginInfo {
2970 public final SaslMechanism saslMechanism;
2971 public final SaslMechanism.Version saslVersion;
2972 public final List<String> inlineBindFeatures;
2973 public final AtomicBoolean success = new AtomicBoolean(false);
2974
2975 private LoginInfo(
2976 final SaslMechanism saslMechanism,
2977 final SaslMechanism.Version saslVersion,
2978 final Collection<String> inlineBindFeatures) {
2979 Preconditions.checkNotNull(saslMechanism, "SASL Mechanism must not be null");
2980 Preconditions.checkNotNull(saslVersion, "SASL version must not be null");
2981 this.saslMechanism = saslMechanism;
2982 this.saslVersion = saslVersion;
2983 this.inlineBindFeatures =
2984 inlineBindFeatures == null
2985 ? Collections.emptyList()
2986 : ImmutableList.copyOf(inlineBindFeatures);
2987 }
2988
2989 public static SaslMechanism mechanism(final LoginInfo loginInfo) {
2990 return loginInfo == null ? null : loginInfo.saslMechanism;
2991 }
2992
2993 public void success(final String challenge, final SSLSocket sslSocket)
2994 throws SaslMechanism.AuthenticationException {
2995 if (Thread.currentThread().isInterrupted()) {
2996 throw new SaslMechanism.AuthenticationException("Race condition during auth");
2997 }
2998 final var response = this.saslMechanism.getResponse(challenge, sslSocket);
2999 if (!Strings.isNullOrEmpty(response)) {
3000 throw new SaslMechanism.AuthenticationException(
3001 "processing success yielded another response");
3002 }
3003 if (this.success.compareAndSet(false, true)) {
3004 return;
3005 }
3006 throw new SaslMechanism.AuthenticationException("Process 'success' twice");
3007 }
3008
3009 public static boolean isSuccess(final LoginInfo loginInfo) {
3010 return loginInfo != null && loginInfo.success.get();
3011 }
3012 }
3013
3014 private static class StreamId {
3015 public final String id;
3016 public final Resolver.Result location;
3017
3018 private StreamId(String id, Resolver.Result location) {
3019 this.id = id;
3020 this.location = location;
3021 }
3022
3023 @NonNull
3024 @Override
3025 public String toString() {
3026 return MoreObjects.toStringHelper(this)
3027 .add("id", id)
3028 .add("location", location)
3029 .toString();
3030 }
3031 }
3032
3033 private static class StateChangingError extends Error {
3034 private final Account.State state;
3035
3036 public StateChangingError(Account.State state) {
3037 this.state = state;
3038 }
3039 }
3040
3041 private static class StateChangingException extends IOException {
3042 private final Account.State state;
3043
3044 public StateChangingException(Account.State state) {
3045 this.state = state;
3046 }
3047 }
3048
3049 public abstract static class Delegate {
3050
3051 protected final Context context;
3052 protected final XmppConnection connection;
3053
3054 protected Delegate(final Context context, final XmppConnection connection) {
3055 this.context = context;
3056 this.connection = connection;
3057 }
3058
3059 protected Account getAccount() {
3060 return connection.account;
3061 }
3062
3063 protected DatabaseBackend getDatabase() {
3064 return DatabaseBackend.getInstance(context);
3065 }
3066
3067 protected <T extends AbstractManager> T getManager(final Class<T> type) {
3068 return connection.getManager(type);
3069 }
3070 }
3071
3072 public class Features {
3073 private final XmppConnection connection;
3074
3075 // TODO move these three into their respective managers or into XmppConnection
3076 private boolean encryptionEnabled = false;
3077 private boolean blockListRequested = false;
3078
3079 public Features(final XmppConnection connection) {
3080 this.connection = connection;
3081 }
3082
3083 private boolean hasDiscoFeature(final Jid server, final String feature) {
3084 final var infoQuery = getManager(DiscoManager.class).get(server);
3085 return infoQuery != null && infoQuery.getFeatureStrings().contains(feature);
3086 }
3087
3088 public boolean commands() {
3089 return hasDiscoFeature(account.getDomain(), Namespace.COMMANDS);
3090 }
3091
3092 public boolean easyOnboardingInvites() {
3093 synchronized (commands) {
3094 return commands.containsKey(Namespace.EASY_ONBOARDING_INVITE);
3095 }
3096 }
3097
3098 public boolean bookmarksConversion() {
3099 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION)
3100 && pepPublishOptions();
3101 }
3102
3103 public boolean blocking() {
3104 return connection.getManager(BlockingManager.class).hasFeature();
3105 }
3106
3107 public boolean spamReporting() {
3108 return hasDiscoFeature(account.getDomain(), Namespace.REPORTING);
3109 }
3110
3111 public boolean flexibleOfflineMessageRetrieval() {
3112 return hasDiscoFeature(
3113 account.getDomain(), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
3114 }
3115
3116 public boolean register() {
3117 return hasDiscoFeature(account.getDomain(), Namespace.REGISTER);
3118 }
3119
3120 public boolean invite() {
3121 return connection.streamFeatures != null
3122 && connection.streamFeatures.hasChild("register", Namespace.INVITE);
3123 }
3124
3125 public boolean sm() {
3126 return streamId != null
3127 || (connection.streamFeatures != null
3128 && connection.streamFeatures.streamManagement());
3129 }
3130
3131 public boolean csi() {
3132 return connection.streamFeatures != null
3133 && connection.streamFeatures.clientStateIndication();
3134 }
3135
3136 public boolean pep() {
3137 final var infoQuery = getManager(DiscoManager.class).get(account.getJid().asBareJid());
3138 return infoQuery != null && infoQuery.hasIdentityWithCategoryAndType("pubsub", "pep");
3139 }
3140
3141 public boolean pepPersistent() {
3142 final var infoQuery = getManager(DiscoManager.class).get(account.getJid().asBareJid());
3143 return infoQuery != null
3144 && infoQuery
3145 .getFeatureStrings()
3146 .contains("http://jabber.org/protocol/pubsub#persistent-items");
3147 }
3148
3149 public boolean bind2() {
3150 final var loginInfo = XmppConnection.this.loginInfo;
3151 return loginInfo != null && !loginInfo.inlineBindFeatures.isEmpty();
3152 }
3153
3154 public boolean sasl2() {
3155 final var loginInfo = XmppConnection.this.loginInfo;
3156 return loginInfo != null && loginInfo.saslVersion == SaslMechanism.Version.SASL_2;
3157 }
3158
3159 public String loginMechanism() {
3160 final var loginInfo = XmppConnection.this.loginInfo;
3161 return loginInfo == null ? null : loginInfo.saslMechanism.getMechanism();
3162 }
3163
3164 public boolean pepPublishOptions() {
3165 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
3166 }
3167
3168 public boolean pepConfigNodeMax() {
3169 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_CONFIG_NODE_MAX);
3170 }
3171
3172 public boolean pepOmemoWhitelisted() {
3173 return hasDiscoFeature(
3174 account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
3175 }
3176
3177 public boolean mam() {
3178 return MessageArchiveService.Version.has(getAccountFeatures());
3179 }
3180
3181 public Collection<String> getAccountFeatures() {
3182 final var infoQuery = getManager(DiscoManager.class).get(account.getJid().asBareJid());
3183 return infoQuery == null ? Collections.emptyList() : infoQuery.getFeatureStrings();
3184 }
3185
3186 public boolean push() {
3187 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
3188 || hasDiscoFeature(account.getDomain(), Namespace.PUSH);
3189 }
3190
3191 public boolean rosterVersioning() {
3192 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
3193 }
3194
3195 public void setBlockListRequested(boolean value) {
3196 this.blockListRequested = value;
3197 }
3198
3199 public HttpUrl getServiceOutageStatus() {
3200 final var disco = getManager(DiscoManager.class).get(account.getDomain());
3201 if (disco == null) {
3202 return null;
3203 }
3204 final var address =
3205 disco.getServiceDiscoveryExtension(
3206 Namespace.SERVICE_OUTAGE_STATUS, "external-status-addresses");
3207 if (Strings.isNullOrEmpty(address)) {
3208 return null;
3209 }
3210 return HttpUrl.parse(address);
3211 }
3212
3213 public boolean httpUpload(long fileSize) {
3214 if (Config.DISABLE_HTTP_UPLOAD) {
3215 return false;
3216 }
3217 final var result = getServiceDiscoveryResultByFeature(Namespace.HTTP_UPLOAD);
3218 if (result == null) {
3219 return false;
3220 }
3221 final long maxSize;
3222 try {
3223 maxSize =
3224 Long.parseLong(
3225 result.getValue()
3226 .getServiceDiscoveryExtension(
3227 Namespace.HTTP_UPLOAD, "max-file-size"));
3228 } catch (final Exception e) {
3229 return true;
3230 }
3231 if (fileSize <= maxSize) {
3232 return true;
3233 } else {
3234 Log.d(
3235 Config.LOGTAG,
3236 account.getJid().asBareJid()
3237 + ": http upload is not available for files with"
3238 + " size "
3239 + fileSize
3240 + " (max is "
3241 + maxSize
3242 + ")");
3243 return false;
3244 }
3245 }
3246
3247 public long getMaxHttpUploadSize() {
3248 final var result = getServiceDiscoveryResultByFeature(Namespace.HTTP_UPLOAD);
3249 if (result == null) {
3250 return -1;
3251 }
3252 try {
3253 return Long.parseLong(
3254 result.getValue()
3255 .getServiceDiscoveryExtension(
3256 Namespace.HTTP_UPLOAD, "max-file-size"));
3257 } catch (final Exception e) {
3258 return -1;
3259 // ignored
3260 }
3261 }
3262
3263 public boolean stanzaIds() {
3264 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
3265 }
3266
3267 public boolean bookmarks2() {
3268 return pepPublishOptions()
3269 && pepConfigNodeMax()
3270 && hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS2_COMPAT);
3271 }
3272
3273 public boolean externalServiceDiscovery() {
3274 return hasDiscoFeature(account.getDomain(), Namespace.EXTERNAL_SERVICE_DISCOVERY);
3275 }
3276
3277 public boolean mds() {
3278 return pepPublishOptions()
3279 && pepConfigNodeMax()
3280 && Config.MESSAGE_DISPLAYED_SYNCHRONIZATION;
3281 }
3282
3283 public boolean mdsServerAssist() {
3284 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.MDS_DISPLAYED);
3285 }
3286 }
3287}