1package eu.siacs.conversations.xmpp;
2import static eu.siacs.conversations.utils.Random.SECURE_RANDOM;
3
4import android.content.Context;
5import android.graphics.Bitmap;
6import android.graphics.BitmapFactory;
7import android.os.Build;
8import android.os.SystemClock;
9import android.security.KeyChain;
10import android.util.Base64;
11import android.util.Log;
12import android.util.Pair;
13import android.util.SparseArray;
14import androidx.annotation.NonNull;
15import androidx.annotation.Nullable;
16
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;
26
27import org.xmlpull.v1.XmlPullParserException;
28
29import java.io.ByteArrayInputStream;
30import java.io.IOException;
31import java.io.InputStream;
32import java.net.ConnectException;
33import java.net.IDN;
34import java.net.InetAddress;
35import java.net.InetSocketAddress;
36import java.net.Socket;
37import java.net.UnknownHostException;
38import java.security.KeyManagementException;
39import java.security.NoSuchAlgorithmException;
40import java.security.Principal;
41import java.security.PrivateKey;
42import java.security.cert.Certificate;
43import java.security.cert.X509Certificate;
44import java.util.ArrayList;
45import java.util.Arrays;
46import java.util.Collection;
47import java.util.Collections;
48import java.util.HashMap;
49import java.util.HashSet;
50import java.util.Hashtable;
51import java.util.Iterator;
52import java.util.List;
53import java.util.Map.Entry;
54import java.util.Set;
55import java.util.concurrent.CountDownLatch;
56import java.util.concurrent.Executors;
57import java.util.concurrent.ScheduledExecutorService;
58import java.util.concurrent.ScheduledFuture;
59import java.util.concurrent.TimeUnit;
60import java.util.concurrent.atomic.AtomicBoolean;
61import java.util.concurrent.atomic.AtomicInteger;
62import java.util.function.Consumer;
63import java.util.regex.Matcher;
64
65import javax.net.ssl.KeyManager;
66import javax.net.ssl.SSLContext;
67import javax.net.ssl.SSLPeerUnverifiedException;
68import javax.net.ssl.SSLSession;
69import javax.net.ssl.SSLSocket;
70import javax.net.ssl.SSLSocketFactory;
71import javax.net.ssl.X509KeyManager;
72import javax.net.ssl.X509TrustManager;
73
74import com.google.common.util.concurrent.FutureCallback;
75import com.google.common.util.concurrent.Futures;
76import com.google.common.util.concurrent.ListenableFuture;
77import com.google.common.util.concurrent.MoreExecutors;
78import com.google.common.util.concurrent.SettableFuture;
79import de.gultsch.common.Patterns;
80import eu.siacs.conversations.AppSettings;
81import eu.siacs.conversations.BuildConfig;
82import eu.siacs.conversations.Config;
83import eu.siacs.conversations.R;
84import eu.siacs.conversations.crypto.XmppDomainVerifier;
85import eu.siacs.conversations.crypto.axolotl.AxolotlService;
86import eu.siacs.conversations.crypto.sasl.ChannelBinding;
87import eu.siacs.conversations.crypto.sasl.ChannelBindingMechanism;
88import eu.siacs.conversations.crypto.sasl.DowngradeProtection;
89import eu.siacs.conversations.crypto.sasl.HashedToken;
90import eu.siacs.conversations.crypto.sasl.SaslMechanism;
91import eu.siacs.conversations.crypto.sasl.ScramMechanism;
92import eu.siacs.conversations.entities.Account;
93import eu.siacs.conversations.entities.Message;
94import eu.siacs.conversations.generator.IqGenerator;
95import eu.siacs.conversations.http.HttpConnectionManager;
96import eu.siacs.conversations.parser.IqParser;
97import eu.siacs.conversations.parser.MessageParser;
98import eu.siacs.conversations.parser.PresenceParser;
99import eu.siacs.conversations.persistance.DatabaseBackend;
100import eu.siacs.conversations.persistance.FileBackend;
101import eu.siacs.conversations.services.MemorizingTrustManager;
102import eu.siacs.conversations.services.MessageArchiveService;
103import eu.siacs.conversations.services.NotificationService;
104import eu.siacs.conversations.services.XmppConnectionService;
105import eu.siacs.conversations.ui.util.PendingItem;
106import eu.siacs.conversations.utils.AccountUtils;
107import eu.siacs.conversations.utils.CryptoHelper;
108import eu.siacs.conversations.utils.PhoneHelper;
109import eu.siacs.conversations.utils.Resolver;
110import eu.siacs.conversations.utils.SSLSockets;
111import eu.siacs.conversations.utils.SocksSocketFactory;
112import eu.siacs.conversations.utils.XmlHelper;
113import eu.siacs.conversations.xml.Element;
114import eu.siacs.conversations.xml.LocalizedContent;
115import eu.siacs.conversations.xml.Namespace;
116import eu.siacs.conversations.xml.Tag;
117import eu.siacs.conversations.xml.TagWriter;
118import eu.siacs.conversations.xml.XmlReader;
119import eu.siacs.conversations.xmpp.bind.Bind2;
120import eu.siacs.conversations.xmpp.forms.Data;
121import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
122import eu.siacs.conversations.xmpp.manager.AbstractManager;
123import eu.siacs.conversations.xmpp.manager.CarbonsManager;
124import eu.siacs.conversations.xmpp.manager.DiscoManager;
125import eu.siacs.conversations.xmpp.manager.PingManager;
126import im.conversations.android.xmpp.Entity;
127import im.conversations.android.xmpp.model.AuthenticationFailure;
128import im.conversations.android.xmpp.model.AuthenticationRequest;
129import im.conversations.android.xmpp.model.AuthenticationStreamFeature;
130import im.conversations.android.xmpp.model.Extension;
131import im.conversations.android.xmpp.model.StreamElement;
132import im.conversations.android.xmpp.model.bind2.Bind;
133import im.conversations.android.xmpp.model.bind2.Bound;
134import im.conversations.android.xmpp.model.cb.SaslChannelBinding;
135import im.conversations.android.xmpp.model.csi.Active;
136import im.conversations.android.xmpp.model.csi.Inactive;
137import im.conversations.android.xmpp.model.disco.info.InfoQuery;
138import im.conversations.android.xmpp.model.error.Condition;
139import im.conversations.android.xmpp.model.fast.Fast;
140import im.conversations.android.xmpp.model.fast.RequestToken;
141import im.conversations.android.xmpp.model.jingle.Jingle;
142import im.conversations.android.xmpp.model.sasl.Auth;
143import im.conversations.android.xmpp.model.sasl.Failure;
144import im.conversations.android.xmpp.model.sasl.Mechanisms;
145import im.conversations.android.xmpp.model.sasl.Response;
146import im.conversations.android.xmpp.model.sasl.SaslError;
147import im.conversations.android.xmpp.model.sasl.Success;
148import im.conversations.android.xmpp.model.sasl2.Authenticate;
149import im.conversations.android.xmpp.model.sasl2.Authentication;
150import im.conversations.android.xmpp.model.sasl2.UserAgent;
151import im.conversations.android.xmpp.model.sm.Ack;
152import im.conversations.android.xmpp.model.sm.Enable;
153import im.conversations.android.xmpp.model.sm.Enabled;
154import im.conversations.android.xmpp.model.sm.Failed;
155import im.conversations.android.xmpp.model.sm.Request;
156import im.conversations.android.xmpp.model.sm.Resume;
157import im.conversations.android.xmpp.model.sm.Resumed;
158import im.conversations.android.xmpp.model.sm.StreamManagement;
159import im.conversations.android.xmpp.model.stanza.Iq;
160import im.conversations.android.xmpp.model.stanza.Presence;
161import im.conversations.android.xmpp.model.stanza.Stanza;
162import im.conversations.android.xmpp.model.streams.StreamError;
163import im.conversations.android.xmpp.model.tls.Proceed;
164import im.conversations.android.xmpp.model.tls.StartTls;
165import im.conversations.android.xmpp.processor.BindProcessor;
166import java.io.ByteArrayInputStream;
167import java.io.IOException;
168import java.io.InputStream;
169import java.net.ConnectException;
170import java.net.IDN;
171import java.net.InetAddress;
172import java.net.InetSocketAddress;
173import java.net.Socket;
174import java.net.UnknownHostException;
175import java.security.KeyManagementException;
176import java.security.NoSuchAlgorithmException;
177import java.security.Principal;
178import java.security.PrivateKey;
179import java.security.cert.X509Certificate;
180import java.util.ArrayList;
181import java.util.Arrays;
182import java.util.Collection;
183import java.util.Collections;
184import java.util.HashMap;
185import java.util.HashSet;
186import java.util.Hashtable;
187import java.util.Iterator;
188import java.util.List;
189import java.util.Map;
190import java.util.Map.Entry;
191import java.util.Set;
192import java.util.concurrent.CountDownLatch;
193import java.util.concurrent.TimeUnit;
194import java.util.concurrent.TimeoutException;
195import java.util.concurrent.atomic.AtomicBoolean;
196import java.util.concurrent.atomic.AtomicInteger;
197import java.util.function.Consumer;
198import java.util.regex.Matcher;
199import javax.net.ssl.KeyManager;
200import javax.net.ssl.SSLContext;
201import javax.net.ssl.SSLPeerUnverifiedException;
202import javax.net.ssl.SSLSocket;
203import javax.net.ssl.SSLSocketFactory;
204import javax.net.ssl.X509KeyManager;
205import javax.net.ssl.X509TrustManager;
206import okhttp3.HttpUrl;
207
208public class XmppConnection implements Runnable {
209
210 protected final Account account;
211 private final Features features = new Features(this);
212 private final HashMap<String, Jid> commands = new HashMap<>();
213 private final SparseArray<Stanza> mStanzaQueue = new SparseArray<>();
214 private final Hashtable<String, Pair<Iq, Pair<Consumer<Iq>, ScheduledFuture>>> packetCallbacks = new Hashtable<>();
215 private final Set<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners =
216 new HashSet<>();
217 private final AppSettings appSettings;
218 private final XmppConnectionService mXmppConnectionService;
219 private Socket socket;
220 private XmlReader tagReader;
221 private TagWriter tagWriter = new TagWriter();
222 private boolean shouldAuthenticate = true;
223 private boolean inSmacksSession = false;
224 private boolean quickStartInProgress = false;
225 private boolean isBound = false;
226 private boolean offlineMessagesRetrieved = false;
227 private im.conversations.android.xmpp.model.streams.Features streamFeatures;
228 private im.conversations.android.xmpp.model.streams.Features boundStreamFeatures;
229 private StreamId streamId = null;
230 private int stanzasReceived = 0;
231 private int stanzasSent = 0;
232 private int stanzasSentBeforeAuthentication;
233 private long lastPacketReceived = 0;
234 private long lastPingSent = 0;
235 private long lastConnectionStarted = 0;
236 private long lastSessionStarted = 0;
237 private long lastDiscoStarted = 0;
238 private boolean isMamPreferenceAlways = false;
239 private final AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
240 private final AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
241 private final AtomicInteger mSmCatchupMessageCounter = new AtomicInteger(0);
242 private boolean mInteractive = false;
243 private int attempt = 0;
244 private OnJinglePacketReceived jingleListener = null;
245
246 private final Consumer<Presence> presenceListener;
247 private final Consumer<Iq> unregisteredIqListener;
248 private final Consumer<im.conversations.android.xmpp.model.stanza.Message> messageListener;
249 private OnStatusChanged statusListener = null;
250 private final Runnable bindListener;
251 private OnMessageAcknowledged acknowledgedListener = null;
252 private final PendingItem<String> pendingResumeId = new PendingItem<>();
253 private LoginInfo loginInfo;
254 private HashedToken.Mechanism hashTokenRequest;
255 private HttpUrl redirectionUrl = null;
256 private String verifiedHostname = null;
257 private Resolver.Result currentResolverResult;
258 private Resolver.Result seeOtherHostResolverResult;
259 private volatile Thread mThread;
260 private CountDownLatch mStreamCountDownLatch;
261 private static ScheduledExecutorService SCHEDULER = Executors.newScheduledThreadPool(1);
262 private boolean dane = false;
263 private final ClassToInstanceMap<AbstractManager> managers;
264
265 public XmppConnection(final Account account, final XmppConnectionService service) {
266 this.account = account;
267 this.mXmppConnectionService = service;
268 this.appSettings = mXmppConnectionService.getAppSettings();
269 this.presenceListener = new PresenceParser(service, this);
270 // TODO rename this to Iq request handler (it handles only IQ get and set; throw assert
271 // error in handler just to be safe)
272 // TODO requires roster and blocking not to be handled by this
273 this.unregisteredIqListener = new IqParser(service, this);
274 this.messageListener = new MessageParser(service, this);
275 this.bindListener = new BindProcessor(service, this);
276 this.managers = Managers.get(service, this);
277 }
278
279 private static void fixResource(final Context context, final Account account) {
280 String resource = account.getResource();
281 int fixedPartLength =
282 context.getString(R.string.app_name).length() + 1; // include the trailing dot
283 int randomPartLength = 4; // 3 bytes
284 if (resource != null && resource.length() > fixedPartLength + randomPartLength) {
285 if (validBase64(
286 resource.substring(fixedPartLength, fixedPartLength + randomPartLength))) {
287 account.setResource(resource.substring(0, fixedPartLength + randomPartLength));
288 }
289 }
290 }
291
292 private static boolean validBase64(final String input) {
293 try {
294 return Base64.decode(input, Base64.URL_SAFE).length == 3;
295 } catch (final Throwable throwable) {
296 return false;
297 }
298 }
299
300 public boolean daneVerified() {
301 return dane;
302 }
303
304 public boolean resolverAuthenticated() {
305 if (currentResolverResult == null) return false;
306 return currentResolverResult.isAuthenticated();
307 }
308
309 private void changeStatus(final Account.State nextStatus) {
310 synchronized (this) {
311 if (Thread.currentThread().isInterrupted()) {
312 Log.d(
313 Config.LOGTAG,
314 account.getJid().asBareJid()
315 + ": not changing status to "
316 + nextStatus
317 + " because thread was interrupted");
318 return;
319 }
320 if (account.getStatus() != nextStatus) {
321 if (nextStatus == Account.State.OFFLINE
322 && account.getStatus() != Account.State.CONNECTING
323 && account.getStatus() != Account.State.ONLINE
324 && account.getStatus() != Account.State.DISABLED
325 && account.getStatus() != Account.State.LOGGED_OUT) {
326 return;
327 }
328 if (nextStatus == Account.State.ONLINE) {
329 this.attempt = 0;
330 }
331 account.setStatus(nextStatus);
332 } else {
333 return;
334 }
335 }
336 if (statusListener != null) {
337 statusListener.onStatusChanged(account);
338 }
339 }
340
341 public Jid getJidForCommand(final String node) {
342 synchronized (this.commands) {
343 return this.commands.get(node);
344 }
345 }
346
347 public void prepareNewConnection() {
348 this.lastConnectionStarted = SystemClock.elapsedRealtime();
349 this.lastPingSent = SystemClock.elapsedRealtime();
350 this.lastDiscoStarted = Long.MAX_VALUE;
351 this.mWaitingForSmCatchup.set(false);
352 this.changeStatus(Account.State.CONNECTING);
353 }
354
355 public boolean isWaitingForSmCatchup() {
356 return mWaitingForSmCatchup.get();
357 }
358
359 public void incrementSmCatchupMessageCounter() {
360 this.mSmCatchupMessageCounter.incrementAndGet();
361 }
362
363 protected void connect() {
364 if (mXmppConnectionService.areMessagesInitialized()) {
365 mXmppConnectionService.resetSendingToWaiting(account);
366 }
367 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
368 this.streamFeatures = null;
369 this.pendingResumeId.clear();
370 this.loginInfo = null;
371 this.features.encryptionEnabled = false;
372 this.inSmacksSession = false;
373 this.quickStartInProgress = false;
374 this.isBound = false;
375 this.attempt++;
376 this.dane = false;
377 this.currentResolverResult = null;
378 // will be set if user entered hostname is being used or hostname was verified with dnssec
379 this.verifiedHostname = null;
380 try {
381 Socket localSocket;
382 shouldAuthenticate = !account.isOptionSet(Account.OPTION_REGISTER);
383 this.changeStatus(Account.State.CONNECTING);
384 final boolean useTorSetting = appSettings.isUseTor();
385 final boolean extended = appSettings.isExtendedConnectionOptions();
386 final boolean useTor = useTorSetting || account.isOnion();
387 // TODO collapse Tor usage into normal connection code path
388 if (useTor) {
389 final var seeOtherHost = this.seeOtherHostResolverResult;
390 final var hostname = account.getHostname().trim();
391 final var port = account.getPort();
392 final Resolver.Result resume = streamId == null ? null : streamId.location;
393 final Resolver.Result viaTor;
394 if (resume != null) {
395 viaTor = resume;
396 } else if (seeOtherHost != null) {
397 viaTor = seeOtherHost;
398 } else if (hostname.isEmpty() || port < 0) {
399 viaTor =
400 Iterables.getOnlyElement(
401 Resolver.fromHardCoded(
402 account.getServer(), Resolver.XMPP_PORT_STARTTLS));
403 } else {
404 if (useTorSetting || extended) {
405 // if the hostname configuration is showing we can take it
406 viaTor = Iterables.getOnlyElement(Resolver.fromHardCoded(hostname, port));
407 } else {
408 viaTor =
409 Iterables.getOnlyElement(
410 Resolver.fromHardCoded(
411 account.getServer(), Resolver.XMPP_PORT_STARTTLS));
412 }
413 this.verifiedHostname = hostname;
414 }
415
416 Log.d(Config.LOGTAG, account.getJid().asBareJid() + " via Tor: " + viaTor);
417
418 localSocket =
419 SocksSocketFactory.createSocketOverTor(
420 viaTor.asDestination(), viaTor.getPort());
421
422 if (viaTor.isDirectTls()) {
423 localSocket = upgradeSocketToTls(localSocket);
424 features.encryptionEnabled = true;
425 }
426
427 try {
428 if (startXmpp(localSocket)) {
429 this.currentResolverResult = viaTor;
430 this.seeOtherHostResolverResult = null;
431 }
432 } catch (final InterruptedException e) {
433 Log.d(
434 Config.LOGTAG,
435 account.getJid().asBareJid()
436 + ": thread was interrupted before beginning stream");
437 return;
438 } catch (final Exception e) {
439 throw new IOException("Could not start stream", e);
440 }
441 } else {
442 final var hostname = account.getHostname().trim();
443 final String domain = account.getServer();
444 final List<Resolver.Result> results = new ArrayList<>();
445 final boolean hardcoded = extended && !hostname.isEmpty();
446 if (hardcoded) {
447 results.addAll(Resolver.fromHardCoded(hostname, account.getPort()));
448 } else {
449 results.addAll(Resolver.resolve(domain));
450 }
451 if (Thread.currentThread().isInterrupted()) {
452 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
453 return;
454 }
455 if (results.isEmpty()) {
456 Log.e(
457 Config.LOGTAG,
458 account.getJid().asBareJid() + ": Resolver results were empty");
459 return;
460 }
461 final Resolver.Result storedBackupResult;
462 if (hardcoded) {
463 storedBackupResult = null;
464 } else {
465 storedBackupResult =
466 mXmppConnectionService.databaseBackend.findResolverResult(domain);
467 if (storedBackupResult != null && !results.contains(storedBackupResult)) {
468 results.add(storedBackupResult);
469 Log.d(
470 Config.LOGTAG,
471 account.getJid().asBareJid()
472 + ": loaded backup resolver result from db: "
473 + storedBackupResult);
474 }
475 }
476 final StreamId streamId = this.streamId;
477 final Resolver.Result resumeLocation = streamId == null ? null : streamId.location;
478 if (resumeLocation != null) {
479 Log.d(
480 Config.LOGTAG,
481 account.getJid().asBareJid()
482 + ": injected resume location on position 0");
483 results.add(0, resumeLocation);
484 }
485 final Resolver.Result seeOtherHost = this.seeOtherHostResolverResult;
486 if (seeOtherHost != null) {
487 Log.d(
488 Config.LOGTAG,
489 account.getJid().asBareJid()
490 + ": injected see-other-host on position 0");
491 results.add(0, seeOtherHost);
492 }
493 for (final Iterator<Resolver.Result> iterator = results.iterator();
494 iterator.hasNext(); ) {
495 final Resolver.Result result = iterator.next();
496 if (Thread.currentThread().isInterrupted()) {
497 Log.d(
498 Config.LOGTAG,
499 account.getJid().asBareJid() + ": Thread was interrupted");
500 return;
501 }
502 try {
503 // if tls is true, encryption is implied and must not be started
504 features.encryptionEnabled = result.isDirectTls();
505 verifiedHostname =
506 result.isAuthenticated() ? result.getHostname().toString() : null;
507 final InetSocketAddress addr;
508 if (result.getIp() != null) {
509 addr = new InetSocketAddress(result.getIp(), result.getPort());
510 Log.d(
511 Config.LOGTAG,
512 account.getJid().asBareJid().toString()
513 + ": using values from resolver "
514 + (result.getHostname() == null
515 ? ""
516 : result.getHostname().toString() + "/")
517 + result.getIp().getHostAddress()
518 + ":"
519 + result.getPort()
520 + " tls: "
521 + features.encryptionEnabled);
522 } else {
523 addr =
524 new InetSocketAddress(
525 IDN.toASCII(result.getHostname().toString()),
526 result.getPort());
527 Log.d(
528 Config.LOGTAG,
529 account.getJid().asBareJid().toString()
530 + ": using values from resolver "
531 + result.getHostname().toString()
532 + ":"
533 + result.getPort()
534 + " tls: "
535 + features.encryptionEnabled);
536 }
537
538 localSocket = new Socket();
539 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
540 localSocket.setSoTimeout(Config.SOCKET_TIMEOUT * 1000);
541 if (features.encryptionEnabled) {
542 localSocket = upgradeSocketToTls(localSocket);
543 }
544 if (startXmpp(localSocket)) {
545 // reset to 0; once the connection is established we don't want this
546 localSocket.setSoTimeout(0);
547 if (!hardcoded && !result.equals(storedBackupResult)) {
548 mXmppConnectionService.databaseBackend.saveResolverResult(
549 domain, result);
550 }
551 this.currentResolverResult = result;
552 this.seeOtherHostResolverResult = null;
553 break; // successfully connected to server that speaks xmpp
554 } else {
555 FileBackend.close(localSocket);
556 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
557 }
558 } catch (final StateChangingException e) {
559 if (!iterator.hasNext()) {
560 throw e;
561 }
562 } catch (InterruptedException e) {
563 Log.d(
564 Config.LOGTAG,
565 account.getJid().asBareJid()
566 + ": thread was interrupted before beginning stream");
567 return;
568 } catch (final Throwable e) {
569 Log.d(
570 Config.LOGTAG,
571 account.getJid().asBareJid().toString()
572 + ": "
573 + e.getMessage()
574 + "("
575 + e.getClass().getName()
576 + ")");
577 if (!iterator.hasNext()) {
578 throw new UnknownHostException();
579 }
580 }
581 }
582 }
583 processStream();
584 } catch (final SecurityException e) {
585 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
586 } catch (final StateChangingException e) {
587 this.changeStatus(e.state);
588 } catch (final UnknownHostException
589 | ConnectException
590 | SocksSocketFactory.HostNotFoundException e) {
591 this.changeStatus(Account.State.SERVER_NOT_FOUND);
592 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
593 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
594 } catch (final IOException | XmlPullParserException e) {
595 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
596 this.changeStatus(Account.State.OFFLINE);
597 this.attempt = Math.max(0, this.attempt - 1);
598 } finally {
599 if (!Thread.currentThread().isInterrupted()) {
600 forceCloseSocket();
601 } else {
602 Log.d(
603 Config.LOGTAG,
604 account.getJid().asBareJid()
605 + ": not force closing socket because thread was interrupted");
606 }
607 }
608 }
609
610 /**
611 * Starts xmpp protocol, call after connecting to socket
612 *
613 * @return true if server returns with valid xmpp, false otherwise
614 */
615 private boolean startXmpp(final Socket socket) throws Exception {
616 if (Thread.currentThread().isInterrupted()) {
617 throw new InterruptedException();
618 }
619 // this means we have at least found a socket to connect to. give the connection another 90s
620 this.lastConnectionStarted = SystemClock.elapsedRealtime();
621 this.socket = socket;
622 this.tagReader = new XmlReader();
623 if (tagWriter != null) {
624 tagWriter.forceClose();
625 }
626 this.tagWriter = new TagWriter();
627 this.tagWriter.setOutputStream(socket.getOutputStream());
628 this.tagReader.setInputStream(socket.getInputStream());
629 this.tagWriter.beginDocument();
630 final boolean quickStart;
631 if (socket instanceof SSLSocket sslSocket) {
632 SSLSockets.log(account, sslSocket);
633 quickStart = establishStream(SSLSockets.version(sslSocket));
634 } else {
635 quickStart = establishStream(SSLSockets.Version.NONE);
636 }
637 final Tag tag = tagReader.readTag();
638 if (Thread.currentThread().isInterrupted()) {
639 throw new InterruptedException();
640 }
641 if (tag == null) {
642 return false;
643 }
644 final boolean success = tag.isStart("stream", Namespace.STREAMS);
645 if (success) {
646 final var from = tag.getAttribute("from");
647 if (from == null || !from.equals(account.getServer())) {
648 throw new StateChangingException(Account.State.HOST_UNKNOWN);
649 }
650 }
651 if (success && quickStart) {
652 this.quickStartInProgress = true;
653 }
654 return success;
655 }
656
657 private SSLSocketFactory getSSLSocketFactory(int port, Consumer<Boolean> daneCb)
658 throws NoSuchAlgorithmException, KeyManagementException {
659 final SSLContext sc = SSLSockets.getSSLContext();
660 final MemorizingTrustManager trustManager =
661 this.mXmppConnectionService.getMemorizingTrustManager();
662 final KeyManager[] keyManager;
663 if (account.getPrivateKeyAlias() != null) {
664 keyManager = new KeyManager[] {new MyKeyManager()};
665 } else {
666 keyManager = null;
667 }
668 final String domain = account.getServer();
669 sc.init(
670 keyManager,
671 new X509TrustManager[] {
672 mInteractive
673 ? trustManager.getInteractive(domain, verifiedHostname, port, daneCb)
674 : trustManager.getNonInteractive(domain, verifiedHostname, port, daneCb)
675 },
676 SECURE_RANDOM);
677 return sc.getSocketFactory();
678 }
679
680 @Override
681 public void run() {
682 synchronized (this) {
683 this.mThread = Thread.currentThread();
684 if (this.mThread.isInterrupted()) {
685 Log.d(
686 Config.LOGTAG,
687 account.getJid().asBareJid()
688 + ": aborting connect because thread was interrupted");
689 return;
690 }
691 forceCloseSocket();
692 }
693 connect();
694 }
695
696 private void processStream() throws XmlPullParserException, IOException {
697 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
698 this.mStreamCountDownLatch = streamCountDownLatch;
699 Tag nextTag = tagReader.readTag();
700 while (nextTag != null && !nextTag.isEnd("stream")) {
701 if (nextTag.isStart("error", Namespace.STREAMS)) {
702 processStreamError(tagReader.readElement(nextTag, StreamError.class));
703 } else if (nextTag.isStart("features", Namespace.STREAMS)) {
704 processStreamFeatures(nextTag);
705 } else if (nextTag.isStart("proceed", Namespace.TLS)) {
706 if (this.socket instanceof SSLSocket) {
707 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
708 }
709 switchOverToTls(nextTag);
710 } else if (nextTag.isStart("failure", Namespace.TLS)) {
711 throw new StateChangingException(Account.State.TLS_ERROR);
712 } else if (!isSecure()) {
713 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
714 } else if (account.isOptionSet(Account.OPTION_REGISTER)
715 && nextTag.isStart("iq", Namespace.JABBER_CLIENT)) {
716 processIq(nextTag);
717 } else if (this.loginInfo == null) {
718 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
719 } else if (nextTag.isStart("success", Namespace.SASL)) {
720 processSuccess(tagReader.readElement(nextTag, Success.class));
721 break;
722 } else if (nextTag.isStart("success", Namespace.SASL_2)) {
723 processSuccess(
724 tagReader.readElement(
725 nextTag, im.conversations.android.xmpp.model.sasl2.Success.class));
726 } else if (nextTag.isStart("failure", Namespace.SASL)) {
727 final var failure = tagReader.readElement(nextTag, Failure.class);
728 processFailure(failure);
729 } else if (nextTag.isStart("failure", Namespace.SASL_2)) {
730 final var failure =
731 tagReader.readElement(
732 nextTag, im.conversations.android.xmpp.model.sasl2.Failure.class);
733 processFailure(failure);
734 } else if (nextTag.isStart("continue", Namespace.SASL_2)) {
735 // two step sasl2 - we don’t support this yet
736 throw new StateChangingException(Account.State.INCOMPATIBLE_CLIENT);
737 } else if (nextTag.isStart("challenge")) {
738 final Element challenge = tagReader.readElement(nextTag);
739 processChallenge(challenge);
740 } else if (!LoginInfo.isSuccess(this.loginInfo)) {
741 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
742 } else if (this.streamId != null
743 && nextTag.isStart("resumed", Namespace.STREAM_MANAGEMENT)) {
744 final Resumed resumed = tagReader.readElement(nextTag, Resumed.class);
745 processResumed(resumed);
746 } else if (nextTag.isStart("failed", Namespace.STREAM_MANAGEMENT)) {
747 final Failed failed = tagReader.readElement(nextTag, Failed.class);
748 processFailed(failed, true);
749 } else if (nextTag.isStart("iq", Namespace.JABBER_CLIENT)) {
750 processIq(nextTag);
751 } else if (!isBound) {
752 Log.d(
753 Config.LOGTAG,
754 account.getJid().asBareJid()
755 + ": server sent unexpected"
756 + nextTag.identifier());
757 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
758 } else if (nextTag.isStart("message", Namespace.JABBER_CLIENT)) {
759 processMessage(nextTag);
760 } else if (nextTag.isStart("presence", Namespace.JABBER_CLIENT)) {
761 processPresence(nextTag);
762 } else if (nextTag.isStart("enabled", Namespace.STREAM_MANAGEMENT)) {
763 final var enabled = tagReader.readElement(nextTag, Enabled.class);
764 processEnabled(enabled);
765 } else if (nextTag.isStart("r", Namespace.STREAM_MANAGEMENT)) {
766 tagReader.readElement(nextTag);
767 if (Config.EXTENDED_SM_LOGGING) {
768 Log.d(
769 Config.LOGTAG,
770 account.getJid().asBareJid()
771 + ": acknowledging stanza #"
772 + this.stanzasReceived);
773 }
774 final Ack ack = new Ack(this.stanzasReceived);
775 tagWriter.writeStanzaAsync(ack);
776 } else if (nextTag.isStart("a", Namespace.STREAM_MANAGEMENT)) {
777 boolean accountUiNeedsRefresh = false;
778 synchronized (NotificationService.CATCHUP_LOCK) {
779 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
780 final int messageCount = mSmCatchupMessageCounter.get();
781 final int pendingIQs = packetCallbacks.size();
782 Log.d(
783 Config.LOGTAG,
784 account.getJid().asBareJid()
785 + ": SM catchup complete (messages="
786 + messageCount
787 + ", pending IQs="
788 + pendingIQs
789 + ")");
790 accountUiNeedsRefresh = true;
791 if (messageCount > 0) {
792 mXmppConnectionService
793 .getNotificationService()
794 .finishBacklog(true, account);
795 }
796 }
797 }
798 if (accountUiNeedsRefresh) {
799 mXmppConnectionService.updateAccountUi();
800 }
801 final var ack = tagReader.readElement(nextTag, Ack.class);
802 lastPacketReceived = SystemClock.elapsedRealtime();
803 final boolean acknowledgedMessages;
804 synchronized (this.mStanzaQueue) {
805 final Optional<Integer> serverSequence = ack.getHandled();
806 if (serverSequence.isPresent()) {
807 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence.get());
808 } else {
809 acknowledgedMessages = false;
810 Log.d(
811 Config.LOGTAG,
812 account.getJid().asBareJid()
813 + ": server send ack without sequence number");
814 }
815 }
816 if (acknowledgedMessages) {
817 mXmppConnectionService.updateConversationUi();
818 }
819 } else {
820 Log.e(
821 Config.LOGTAG,
822 account.getJid().asBareJid()
823 + ": Encountered unknown stream element"
824 + nextTag.identifier());
825 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
826 }
827 nextTag = tagReader.readTag();
828 }
829 if (nextTag != null && nextTag.isEnd("stream")) {
830 streamCountDownLatch.countDown();
831 }
832 }
833
834 private void processChallenge(final Element challenge) throws IOException {
835 final SaslMechanism.Version version;
836 try {
837 version = SaslMechanism.Version.of(challenge);
838 } catch (final IllegalArgumentException e) {
839 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
840 }
841 final StreamElement response;
842 if (version == SaslMechanism.Version.SASL) {
843 response = new Response();
844 } else if (version == SaslMechanism.Version.SASL_2) {
845 response = new im.conversations.android.xmpp.model.sasl2.Response();
846 } else {
847 throw new AssertionError("Missing implementation for " + version);
848 }
849 final LoginInfo currentLoginInfo = this.loginInfo;
850 if (currentLoginInfo == null || LoginInfo.isSuccess(currentLoginInfo)) {
851 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
852 }
853 try {
854 response.setContent(
855 currentLoginInfo.saslMechanism.getResponse(
856 challenge.getContent(), sslSocketOrNull(socket)));
857 } catch (final SaslMechanism.AuthenticationException e) {
858 // TODO: Send auth abort tag.
859 Log.e(Config.LOGTAG, e.toString());
860 throw new StateChangingException(Account.State.UNAUTHORIZED);
861 }
862 tagWriter.writeElement(response);
863 }
864
865 private void processSuccess(final StreamElement element)
866 throws IOException, XmlPullParserException {
867 final LoginInfo currentLoginInfo = this.loginInfo;
868 final SaslMechanism currentSaslMechanism = LoginInfo.mechanism(currentLoginInfo);
869 if (currentLoginInfo == null
870 || LoginInfo.isSuccess(currentLoginInfo)
871 || currentSaslMechanism == null) {
872 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
873 }
874 final SaslMechanism.Version version;
875 final String challenge;
876 if (element instanceof Success success) {
877 challenge = success.getContent();
878 version = SaslMechanism.Version.SASL;
879 } else if (element instanceof im.conversations.android.xmpp.model.sasl2.Success success) {
880 challenge = success.findChildContent("additional-data");
881 version = SaslMechanism.Version.SASL_2;
882 } else {
883 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
884 }
885 try {
886 currentLoginInfo.success(challenge, sslSocketOrNull(socket));
887 } catch (final SaslMechanism.AuthenticationException e) {
888 Log.e(Config.LOGTAG, account.getJid().asBareJid() + ": authentication failure ", e);
889 throw new StateChangingException(Account.State.UNAUTHORIZED);
890 }
891 Log.d(
892 Config.LOGTAG,
893 account.getJid().asBareJid().toString() + ": logged in (using " + version + ")");
894 if (SaslMechanism.pin(currentSaslMechanism)) {
895 account.setPinnedMechanism(currentSaslMechanism);
896 }
897 if (element instanceof im.conversations.android.xmpp.model.sasl2.Success success) {
898 final var authorizationJid = success.getAuthorizationIdentifier();
899 checkAssignedDomainOrThrow(authorizationJid);
900 Log.d(
901 Config.LOGTAG,
902 account.getJid().asBareJid()
903 + ": SASL 2.0 authorization identifier was "
904 + authorizationJid);
905 // TODO this should only happen when we used Bind 2
906 if (authorizationJid.isFullJid() && account.setJid(authorizationJid)) {
907 Log.d(
908 Config.LOGTAG,
909 account.getJid().asBareJid()
910 + ": jid changed during SASL 2.0. updating database");
911 }
912 final Bound bound = success.getExtension(Bound.class);
913 final Resumed resumed = success.getExtension(Resumed.class);
914 final Failed failed = success.getExtension(Failed.class);
915 final Element tokenWrapper = success.findChild("token", Namespace.FAST);
916 final String token = tokenWrapper == null ? null : tokenWrapper.getAttribute("token");
917 if (bound != null && resumed != null) {
918 Log.d(
919 Config.LOGTAG,
920 account.getJid().asBareJid()
921 + ": server sent bound and resumed in SASL2 success");
922 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
923 }
924 if (resumed != null && streamId != null) {
925 if (this.boundStreamFeatures != null) {
926 this.streamFeatures = this.boundStreamFeatures;
927 Log.d(
928 Config.LOGTAG,
929 "putting previous stream features back in place: "
930 + XmlHelper.printElementNames(this.boundStreamFeatures));
931 }
932 processResumed(resumed);
933 } else if (failed != null) {
934 processFailed(failed, false); // wait for new stream features
935 }
936 if (bound != null) {
937 clearIqCallbacks();
938 this.isBound = true;
939 processNopStreamFeatures();
940 this.boundStreamFeatures = this.streamFeatures;
941 final Enabled streamManagementEnabled = bound.getExtension(Enabled.class);
942 final Element carbonsEnabled = bound.findChild("enabled", Namespace.CARBONS);
943 final boolean waitForDisco;
944 if (streamManagementEnabled != null) {
945 resetOutboundStanzaQueue();
946 processEnabled(streamManagementEnabled);
947 waitForDisco = true;
948 } else {
949 // if we did not enable stream management in bind do it now
950 waitForDisco = enableStreamManagement();
951 }
952 final boolean negotiatedCarbons;
953 if (carbonsEnabled != null) {
954 negotiatedCarbons = true;
955 Log.d(
956 Config.LOGTAG,
957 account.getJid().asBareJid()
958 + ": successfully enabled carbons (via Bind 2.0)");
959 } else if (currentLoginInfo.inlineBindFeatures != null
960 && currentLoginInfo.inlineBindFeatures.contains(Namespace.CARBONS)) {
961 negotiatedCarbons = true;
962 Log.d(
963 Config.LOGTAG,
964 account.getJid().asBareJid()
965 + ": successfully enabled carbons (via Bind 2.0/implicit)");
966 } else {
967 negotiatedCarbons = false;
968 }
969 sendPostBindInitialization(waitForDisco, negotiatedCarbons);
970 }
971 final HashedToken.Mechanism tokenMechanism;
972 if (SaslMechanism.hashedToken(currentSaslMechanism)) {
973 tokenMechanism = ((HashedToken) currentSaslMechanism).getTokenMechanism();
974 } else if (this.hashTokenRequest != null) {
975 tokenMechanism = this.hashTokenRequest;
976 } else {
977 tokenMechanism = null;
978 }
979 if (tokenMechanism != null && !Strings.isNullOrEmpty(token)) {
980 if (ChannelBinding.priority(tokenMechanism.channelBinding)
981 >= ChannelBindingMechanism.getPriority(currentSaslMechanism)) {
982 this.account.setFastToken(tokenMechanism, token);
983 Log.d(
984 Config.LOGTAG,
985 account.getJid().asBareJid()
986 + ": storing hashed token "
987 + tokenMechanism);
988 } else {
989 Log.d(
990 Config.LOGTAG,
991 account.getJid().asBareJid()
992 + ": not accepting hashed token "
993 + tokenMechanism.name()
994 + " for log in mechanism "
995 + currentSaslMechanism.getMechanism());
996 this.account.resetFastToken();
997 }
998 } else if (this.hashTokenRequest != null) {
999 Log.w(
1000 Config.LOGTAG,
1001 account.getJid().asBareJid()
1002 + ": no response to our hashed token request "
1003 + this.hashTokenRequest);
1004 }
1005 }
1006 mXmppConnectionService.databaseBackend.updateAccount(account);
1007 this.quickStartInProgress = false;
1008 if (version == SaslMechanism.Version.SASL) {
1009 tagReader.reset();
1010 sendStartStream(false, true);
1011 final Tag tag = tagReader.readTag();
1012 if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
1013 processStream();
1014 } else {
1015 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
1016 }
1017 }
1018 }
1019
1020 private void resetOutboundStanzaQueue() {
1021 synchronized (this.mStanzaQueue) {
1022 final ImmutableList.Builder<Stanza> intermediateStanzasBuilder =
1023 new ImmutableList.Builder<>();
1024 if (Config.EXTENDED_SM_LOGGING) {
1025 Log.d(
1026 Config.LOGTAG,
1027 account.getJid().asBareJid()
1028 + ": stanzas sent before auth: "
1029 + this.stanzasSentBeforeAuthentication);
1030 }
1031 for (int i = this.stanzasSentBeforeAuthentication + 1; i <= this.stanzasSent; ++i) {
1032 final Stanza stanza = this.mStanzaQueue.get(i);
1033 if (stanza != null) {
1034 intermediateStanzasBuilder.add(stanza);
1035 }
1036 }
1037 this.mStanzaQueue.clear();
1038 final var intermediateStanzas = intermediateStanzasBuilder.build();
1039 for (int i = 0; i < intermediateStanzas.size(); ++i) {
1040 this.mStanzaQueue.append(i + 1, intermediateStanzas.get(i));
1041 }
1042 this.stanzasSent = intermediateStanzas.size();
1043 if (Config.EXTENDED_SM_LOGGING) {
1044 Log.d(
1045 Config.LOGTAG,
1046 account.getJid().asBareJid()
1047 + ": resetting outbound stanza queue to "
1048 + this.stanzasSent);
1049 }
1050 }
1051 }
1052
1053 private void processNopStreamFeatures() throws IOException {
1054 final Tag tag = tagReader.readTag();
1055 if (tag != null && tag.isStart("features", Namespace.STREAMS)) {
1056 this.streamFeatures =
1057 tagReader.readElement(
1058 tag, im.conversations.android.xmpp.model.streams.Features.class);
1059 Log.d(
1060 Config.LOGTAG,
1061 account.getJid().asBareJid()
1062 + ": processed NOP stream features after success: "
1063 + XmlHelper.printElementNames(this.streamFeatures));
1064 } else {
1065 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received " + tag);
1066 Log.d(
1067 Config.LOGTAG,
1068 account.getJid().asBareJid()
1069 + ": server did not send stream features after SASL2 success");
1070 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1071 }
1072 }
1073
1074 private void processFailure(final AuthenticationFailure failure) throws IOException {
1075 final SaslMechanism.Version version;
1076 try {
1077 version = SaslMechanism.Version.of(failure);
1078 } catch (final IllegalArgumentException e) {
1079 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1080 }
1081
1082 final LoginInfo currentLoginInfo = this.loginInfo;
1083 if (currentLoginInfo == null || LoginInfo.isSuccess(currentLoginInfo)) {
1084 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1085 }
1086
1087 Log.d(Config.LOGTAG, failure.toString());
1088 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": login failure " + version);
1089 if (SaslMechanism.hashedToken(LoginInfo.mechanism(currentLoginInfo))) {
1090 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resetting token");
1091 account.resetFastToken();
1092 mXmppConnectionService.databaseBackend.updateAccount(account);
1093 }
1094 final var errorCondition = failure.getErrorCondition();
1095 if (errorCondition instanceof SaslError.InvalidMechanism
1096 || errorCondition instanceof SaslError.MechanismTooWeak) {
1097 Log.d(
1098 Config.LOGTAG,
1099 account.getJid().asBareJid()
1100 + ": invalid or too weak mechanism. resetting quick start");
1101 if (account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false)) {
1102 mXmppConnectionService.databaseBackend.updateAccount(account);
1103 }
1104 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1105 } else if (errorCondition instanceof SaslError.TemporaryAuthFailure) {
1106 throw new StateChangingException(Account.State.TEMPORARY_AUTH_FAILURE);
1107 } else if (errorCondition instanceof SaslError.AccountDisabled) {
1108 final String text = failure.getText();
1109 if (Strings.isNullOrEmpty(text)) {
1110 throw new StateChangingException(Account.State.UNAUTHORIZED);
1111 }
1112 final Matcher matcher = Patterns.URI_HTTP.matcher(text);
1113 if (matcher.find()) {
1114 final HttpUrl url;
1115 try {
1116 url = HttpUrl.get(text.substring(matcher.start(), matcher.end()));
1117 } catch (final IllegalArgumentException e) {
1118 throw new StateChangingException(Account.State.UNAUTHORIZED);
1119 }
1120 if (url.isHttps()) {
1121 this.redirectionUrl = url;
1122 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
1123 }
1124 }
1125 }
1126 if (SaslMechanism.hashedToken(LoginInfo.mechanism(currentLoginInfo))) {
1127 Log.d(
1128 Config.LOGTAG,
1129 account.getJid().asBareJid()
1130 + ": fast authentication failed. falling back to regular"
1131 + " authentication");
1132 this.loginInfo = null;
1133 authenticate();
1134 } else {
1135 throw new StateChangingException(Account.State.UNAUTHORIZED);
1136 }
1137 }
1138
1139 private static SSLSocket sslSocketOrNull(final Socket socket) {
1140 if (socket instanceof SSLSocket) {
1141 return (SSLSocket) socket;
1142 } else {
1143 return null;
1144 }
1145 }
1146
1147 private void processEnabled(final Enabled enabled) {
1148 final StreamId streamId = getStreamId(enabled);
1149 if (streamId == null) {
1150 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream management enabled");
1151 } else {
1152 Log.d(
1153 Config.LOGTAG,
1154 account.getJid().asBareJid()
1155 + ": stream management enabled. resume at: "
1156 + streamId.location);
1157 }
1158 this.streamId = streamId;
1159 this.stanzasReceived = 0;
1160 this.inSmacksSession = true;
1161 final var r = new Request();
1162 tagWriter.writeStanzaAsync(r);
1163 }
1164
1165 @Nullable
1166 private StreamId getStreamId(final Enabled enabled) {
1167 final Optional<String> id = enabled.getResumeId();
1168 final String locationAttribute = enabled.getLocation();
1169 final Resolver.Result currentResolverResult = this.currentResolverResult;
1170 final Resolver.Result location;
1171 if (Strings.isNullOrEmpty(locationAttribute) || currentResolverResult == null) {
1172 location = null;
1173 } else {
1174 location = currentResolverResult.seeOtherHost(locationAttribute);
1175 }
1176 return id.isPresent() ? new StreamId(id.get(), location) : null;
1177 }
1178
1179 private void processResumed(final Resumed resumed) throws StateChangingException {
1180 final var pendingResumeId = this.pendingResumeId.pop();
1181 final var prevId = resumed.getPrevId();
1182 if (prevId == null || !prevId.equals(pendingResumeId)) {
1183 Log.d(
1184 Config.LOGTAG,
1185 account.getJid().asBareJid()
1186 + ": server tried resume with unknown id "
1187 + prevId);
1188 resetStreamId();
1189 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1190 }
1191 this.inSmacksSession = true;
1192 this.isBound = true;
1193 this.tagWriter.writeStanzaAsync(new Request());
1194 lastPacketReceived = SystemClock.elapsedRealtime();
1195 final Optional<Integer> h = resumed.getHandled();
1196 final int serverCount;
1197 if (h.isPresent()) {
1198 serverCount = h.get();
1199 } else {
1200 resetStreamId();
1201 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1202 }
1203 final ArrayList<Stanza> failedStanzas = new ArrayList<>();
1204 final boolean acknowledgedMessages;
1205 synchronized (this.mStanzaQueue) {
1206 if (serverCount < stanzasSent) {
1207 Log.d(
1208 Config.LOGTAG,
1209 account.getJid().asBareJid() + ": session resumed with lost packages");
1210 stanzasSent = serverCount;
1211 } else {
1212 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": session resumed");
1213 }
1214 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
1215 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
1216 failedStanzas.add(mStanzaQueue.valueAt(i));
1217 }
1218 mStanzaQueue.clear();
1219 }
1220 if (acknowledgedMessages) {
1221 mXmppConnectionService.updateConversationUi();
1222 }
1223 Log.d(
1224 Config.LOGTAG,
1225 account.getJid().asBareJid() + ": resending " + failedStanzas.size() + " stanzas");
1226 for (final Stanza packet : failedStanzas) {
1227 if (packet instanceof im.conversations.android.xmpp.model.stanza.Message message) {
1228 mXmppConnectionService.markMessage(
1229 account,
1230 message.getTo().asBareJid(),
1231 message.getId(),
1232 Message.STATUS_UNSEND);
1233 }
1234 sendPacket(packet);
1235 }
1236 if (mWaitForDisco.get()) {
1237 this.lastDiscoStarted = SystemClock.elapsedRealtime();
1238 Log.d(
1239 Config.LOGTAG,
1240 account.getJid().asBareJid() + ": awaiting disco results after resume");
1241 changeStatus(Account.State.CONNECTING);
1242 } else {
1243 changeStatusToOnline();
1244 }
1245 }
1246
1247 private void changeStatusToOnline() {
1248 Log.d(
1249 Config.LOGTAG,
1250 account.getJid().asBareJid() + ": online with resource " + account.getResource());
1251 changeStatus(Account.State.ONLINE);
1252 }
1253
1254 private void processFailed(final Failed failed, final boolean sendBindRequest) {
1255 final Optional<Integer> serverCount = failed.getHandled();
1256 if (serverCount.isPresent()) {
1257 Log.d(
1258 Config.LOGTAG,
1259 account.getJid().asBareJid()
1260 + ": resumption failed but server acknowledged stanza #"
1261 + serverCount.get());
1262 final boolean acknowledgedMessages;
1263 synchronized (this.mStanzaQueue) {
1264 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount.get());
1265 }
1266 if (acknowledgedMessages) {
1267 mXmppConnectionService.updateConversationUi();
1268 }
1269 } else {
1270 Log.d(
1271 Config.LOGTAG,
1272 account.getJid().asBareJid()
1273 + ": resumption failed ("
1274 + XmlHelper.print(failed.getChildren())
1275 + ")");
1276 }
1277 resetStreamId();
1278 if (sendBindRequest) {
1279 sendBindRequest();
1280 }
1281 }
1282
1283 private boolean acknowledgeStanzaUpTo(final int serverCount) {
1284 if (serverCount > stanzasSent) {
1285 Log.e(
1286 Config.LOGTAG,
1287 "server acknowledged more stanzas than we sent. serverCount="
1288 + serverCount
1289 + ", ourCount="
1290 + stanzasSent);
1291 }
1292 boolean acknowledgedMessages = false;
1293 for (int i = 0; i < mStanzaQueue.size(); ++i) {
1294 if (serverCount >= mStanzaQueue.keyAt(i)) {
1295 if (Config.EXTENDED_SM_LOGGING) {
1296 Log.d(
1297 Config.LOGTAG,
1298 account.getJid().asBareJid()
1299 + ": server acknowledged stanza #"
1300 + mStanzaQueue.keyAt(i));
1301 }
1302 final Stanza stanza = mStanzaQueue.valueAt(i);
1303 if (stanza instanceof im.conversations.android.xmpp.model.stanza.Message packet
1304 && acknowledgedListener != null) {
1305 final String id = packet.getId();
1306 final Jid to = packet.getTo();
1307 if (id != null && to != null) {
1308 acknowledgedMessages |=
1309 acknowledgedListener.onMessageAcknowledged(account, to, id);
1310 }
1311 }
1312 mStanzaQueue.removeAt(i);
1313 i--;
1314 }
1315 }
1316 return acknowledgedMessages;
1317 }
1318
1319 private <S extends Stanza> @NonNull S processPacket(final Tag currentTag, final Class<S> clazz)
1320 throws IOException {
1321 final S stanza = tagReader.readElement(currentTag, clazz);
1322 if (stanzasReceived == Integer.MAX_VALUE) {
1323 resetStreamId();
1324 throw new IOException("time to restart the session. cant handle >2 billion pcks");
1325 }
1326 if (inSmacksSession) {
1327 ++stanzasReceived;
1328 } else if (features.sm()) {
1329 Log.d(
1330 Config.LOGTAG,
1331 account.getJid().asBareJid()
1332 + ": not counting stanza("
1333 + stanza.getClass().getSimpleName()
1334 + "). Not in smacks session.");
1335 }
1336 lastPacketReceived = SystemClock.elapsedRealtime();
1337 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
1338 Log.d(Config.LOGTAG, "[background stanza] " + stanza);
1339 }
1340 return stanza;
1341 }
1342
1343 private void processIq(final Tag currentTag) throws IOException {
1344 final Iq packet = processPacket(currentTag, Iq.class);
1345 if (packet.isInvalid()) {
1346 Log.e(
1347 Config.LOGTAG,
1348 "encountered invalid iq from='"
1349 + packet.getFrom()
1350 + "' to='"
1351 + packet.getTo()
1352 + "'");
1353 return;
1354 }
1355 if (Thread.currentThread().isInterrupted()) {
1356 Log.d(
1357 Config.LOGTAG,
1358 account.getJid().asBareJid() + "Not processing iq. Thread was interrupted");
1359 return;
1360 }
1361 if (packet.hasExtension(Jingle.class)
1362 && packet.getType() == Iq.Type.SET
1363 && isBound
1364 && LoginInfo.isSuccess(this.loginInfo)) {
1365 if (this.jingleListener != null) {
1366 this.jingleListener.onJinglePacketReceived(account, packet);
1367 }
1368 } else {
1369 final var callback = getIqPacketReceivedCallback(packet);
1370 if (callback == null) {
1371 Log.d(
1372 Config.LOGTAG,
1373 account.getJid().asBareJid().toString()
1374 + ": no callback registered for IQ from "
1375 + packet.getFrom());
1376 return;
1377 }
1378 final ScheduledFuture timeoutFuture = callback.second;
1379 try {
1380 if (timeoutFuture == null || timeoutFuture.cancel(false)) {
1381 callback.first.accept(packet);
1382 }
1383 } catch (final StateChangingError error) {
1384 throw new StateChangingException(error.state);
1385 }
1386 }
1387 }
1388
1389 private Pair<Consumer<Iq>, ScheduledFuture> getIqPacketReceivedCallback(final Iq stanza)
1390 throws StateChangingException {
1391 final boolean isRequest =
1392 stanza.getType() == Iq.Type.GET || stanza.getType() == Iq.Type.SET;
1393 if (isRequest) {
1394 if (isBound && LoginInfo.isSuccess(this.loginInfo)) {
1395 return new Pair<>(this.unregisteredIqListener, null);
1396 } else {
1397 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1398 }
1399 } else {
1400 synchronized (this.packetCallbacks) {
1401 final var pair = packetCallbacks.get(stanza.getId());
1402 if (pair == null) {
1403 return null;
1404 }
1405 if (pair.first.toServer(account)) {
1406 if (stanza.fromServer(account)) {
1407 packetCallbacks.remove(stanza.getId());
1408 return pair.second;
1409 } else {
1410 Log.e(
1411 Config.LOGTAG,
1412 account.getJid().asBareJid().toString()
1413 + ": ignoring spoofed iq packet");
1414 }
1415 } else {
1416 if (stanza.getFrom() != null && stanza.getFrom().equals(pair.first.getTo())) {
1417 packetCallbacks.remove(stanza.getId());
1418 return pair.second;
1419 } else {
1420 Log.e(
1421 Config.LOGTAG,
1422 account.getJid().asBareJid().toString()
1423 + ": ignoring spoofed iq packet");
1424 }
1425 }
1426 }
1427 }
1428 return null;
1429 }
1430
1431 private void processMessage(final Tag currentTag) throws IOException {
1432 final var packet =
1433 processPacket(currentTag, im.conversations.android.xmpp.model.stanza.Message.class);
1434 if (packet.isInvalid()) {
1435 Log.e(
1436 Config.LOGTAG,
1437 "encountered invalid message from='"
1438 + packet.getFrom()
1439 + "' to='"
1440 + packet.getTo()
1441 + "'");
1442 return;
1443 }
1444 if (Thread.currentThread().isInterrupted()) {
1445 Log.d(
1446 Config.LOGTAG,
1447 account.getJid().asBareJid()
1448 + "Not processing message. Thread was interrupted");
1449 return;
1450 }
1451 this.messageListener.accept(packet);
1452 }
1453
1454 private void processPresence(final Tag currentTag) throws IOException {
1455 final var packet = processPacket(currentTag, Presence.class);
1456 if (packet.isInvalid()) {
1457 Log.e(
1458 Config.LOGTAG,
1459 "encountered invalid presence from='"
1460 + packet.getFrom()
1461 + "' to='"
1462 + packet.getTo()
1463 + "'");
1464 return;
1465 }
1466 if (Thread.currentThread().isInterrupted()) {
1467 Log.d(
1468 Config.LOGTAG,
1469 account.getJid().asBareJid()
1470 + "Not processing presence. Thread was interrupted");
1471 return;
1472 }
1473 this.presenceListener.accept(packet);
1474 }
1475
1476 private void sendStartTLS() throws IOException {
1477 tagWriter.writeElement(new StartTls());
1478 }
1479
1480 private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
1481 tagReader.readElement(currentTag, Proceed.class);
1482 final Socket socket = this.socket;
1483 final SSLSocket sslSocket = upgradeSocketToTls(socket);
1484 this.socket = sslSocket;
1485 this.tagReader.setInputStream(sslSocket.getInputStream());
1486 this.tagWriter.setOutputStream(sslSocket.getOutputStream());
1487 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
1488 final boolean quickStart;
1489 try {
1490 quickStart = establishStream(SSLSockets.version(sslSocket));
1491 } catch (final InterruptedException e) {
1492 return;
1493 }
1494 if (quickStart) {
1495 this.quickStartInProgress = true;
1496 }
1497 features.encryptionEnabled = true;
1498 final Tag tag = tagReader.readTag();
1499 if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
1500 SSLSockets.log(account, sslSocket);
1501 processStream();
1502 } else {
1503 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
1504 }
1505 sslSocket.close();
1506 }
1507
1508 private X509Certificate[] certificates(final SSLSession session) throws SSLPeerUnverifiedException {
1509 List<X509Certificate> certs = new ArrayList<>();
1510 for (Certificate certificate : session.getPeerCertificates()) {
1511 if (certificate instanceof X509Certificate) {
1512 certs.add((X509Certificate) certificate);
1513 }
1514 }
1515 return certs.toArray(new X509Certificate[certs.size()]);
1516 }
1517
1518 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
1519 this.dane = false;
1520 final SSLSocketFactory sslSocketFactory;
1521 try {
1522 sslSocketFactory = getSSLSocketFactory(socket.getPort(), (d) -> this.dane = d);
1523 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
1524 throw new StateChangingException(Account.State.TLS_ERROR);
1525 }
1526 final InetAddress address = socket.getInetAddress();
1527 final SSLSocket sslSocket =
1528 (SSLSocket)
1529 sslSocketFactory.createSocket(
1530 socket, address.getHostAddress(), socket.getPort(), true);
1531 SSLSockets.setSecurity(sslSocket);
1532 SSLSockets.setHostname(sslSocket, IDN.toASCII(account.getServer()));
1533 SSLSockets.setApplicationProtocol(sslSocket, "xmpp-client");
1534 final XmppDomainVerifier xmppDomainVerifier = new XmppDomainVerifier();
1535 try {
1536 if (!dane && !xmppDomainVerifier.verify(
1537 account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
1538 Log.d(
1539 Config.LOGTAG,
1540 account.getJid().asBareJid()
1541 + ": TLS certificate domain verification failed");
1542 FileBackend.close(sslSocket);
1543 throw new StateChangingException(Account.State.TLS_ERROR_DOMAIN);
1544 }
1545 } catch (final SSLPeerUnverifiedException e) {
1546 FileBackend.close(sslSocket);
1547 throw new StateChangingException(Account.State.TLS_ERROR);
1548 }
1549 return sslSocket;
1550 }
1551
1552 private void processStreamFeatures(final Tag currentTag) throws IOException {
1553 final var streamFeatures =
1554 tagReader.readElement(
1555 currentTag, im.conversations.android.xmpp.model.streams.Features.class);
1556 final boolean isSecure = isSecure();
1557 if (streamFeatures.hasExtension(StartTls.class) && !features.encryptionEnabled) {
1558 sendStartTLS();
1559 return;
1560 }
1561 if (isSecure) {
1562 processSecureStreamFeatures(streamFeatures);
1563 } else {
1564 Log.d(
1565 Config.LOGTAG,
1566 account.getJid().asBareJid()
1567 + ": STARTTLS not available "
1568 + XmlHelper.printElementNames(streamFeatures));
1569 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1570 }
1571 }
1572
1573 private void processSecureStreamFeatures(
1574 final im.conversations.android.xmpp.model.streams.Features streamFeatures)
1575 throws IOException {
1576 this.streamFeatures = streamFeatures;
1577 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
1578 if (this.quickStartInProgress) {
1579 if (streamFeatures.hasStreamFeature(Authentication.class)) {
1580 Log.d(
1581 Config.LOGTAG,
1582 account.getJid().asBareJid()
1583 + ": quick start in progress. ignoring features: "
1584 + XmlHelper.printElementNames(this.streamFeatures));
1585 if (SaslMechanism.hashedToken(LoginInfo.mechanism(this.loginInfo))) {
1586 return;
1587 }
1588 if (isFastTokenAvailable(this.streamFeatures.getExtension(Authentication.class))) {
1589 Log.d(
1590 Config.LOGTAG,
1591 account.getJid().asBareJid()
1592 + ": fast token available; resetting quick start");
1593 account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false);
1594 mXmppConnectionService.databaseBackend.updateAccount(account);
1595 }
1596 return;
1597 }
1598 Log.d(
1599 Config.LOGTAG,
1600 account.getJid().asBareJid()
1601 + ": server lost support for SASL 2. quick start not possible");
1602 this.account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false);
1603 mXmppConnectionService.databaseBackend.updateAccount(account);
1604 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1605 }
1606 if (streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1607 && account.isOptionSet(Account.OPTION_REGISTER)) {
1608 register();
1609 } else if (!streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1610 && account.isOptionSet(Account.OPTION_REGISTER)) {
1611 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
1612 } else if (streamFeatures.hasStreamFeature(Authentication.class)
1613 && shouldAuthenticate
1614 && this.loginInfo == null) {
1615 authenticate(SaslMechanism.Version.SASL_2);
1616 } else if (streamFeatures.hasStreamFeature(Mechanisms.class)
1617 && shouldAuthenticate
1618 && this.loginInfo == null) {
1619 authenticate(SaslMechanism.Version.SASL);
1620 } else if (streamFeatures.streamManagement()
1621 && LoginInfo.isSuccess(loginInfo)
1622 && streamId != null
1623 && !inSmacksSession) {
1624 if (Config.EXTENDED_SM_LOGGING) {
1625 Log.d(
1626 Config.LOGTAG,
1627 account.getJid().asBareJid()
1628 + ": resuming after stanza #"
1629 + stanzasReceived);
1630 }
1631 final var streamId = this.streamId.id;
1632 final var resume = new Resume(streamId, stanzasReceived);
1633 prepareForResume(streamId);
1634 this.tagWriter.writeStanzaAsync(resume);
1635 } else if (needsBinding) {
1636 if (this.streamFeatures.hasChild("bind", Namespace.BIND)
1637 && LoginInfo.isSuccess(loginInfo)) {
1638 sendBindRequest();
1639 } else {
1640 Log.d(
1641 Config.LOGTAG,
1642 account.getJid().asBareJid()
1643 + ": unable to find bind feature "
1644 + XmlHelper.printElementNames(this.streamFeatures));
1645 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1646 }
1647 } else {
1648 Log.d(
1649 Config.LOGTAG,
1650 account.getJid().asBareJid()
1651 + ": received NOP stream features: "
1652 + XmlHelper.printElementNames(this.streamFeatures));
1653 }
1654 }
1655
1656 private void authenticate() throws IOException {
1657 final boolean isSecure = isSecure();
1658 if (isSecure && this.streamFeatures.hasStreamFeature(Authentication.class)) {
1659 authenticate(SaslMechanism.Version.SASL_2);
1660 } else if (isSecure && this.streamFeatures.hasStreamFeature(Mechanisms.class)) {
1661 authenticate(SaslMechanism.Version.SASL);
1662 } else {
1663 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1664 }
1665 }
1666
1667 private boolean isSecure() {
1668 return (features.encryptionEnabled && this.socket instanceof SSLSocket)
1669 || Config.ALLOW_NON_TLS_CONNECTIONS
1670 || account.isDirectToOnion();
1671 }
1672
1673 private void authenticate(final SaslMechanism.Version version) throws IOException {
1674 if (this.loginInfo != null) {
1675 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1676 }
1677 final AuthenticationStreamFeature authElement;
1678 if (version == SaslMechanism.Version.SASL) {
1679 authElement = this.streamFeatures.getExtension(Mechanisms.class);
1680 } else {
1681 authElement = this.streamFeatures.getExtension(Authentication.class);
1682 }
1683 final Collection<String> mechanisms = authElement.getMechanismNames();
1684 final var cbExtension = this.streamFeatures.getExtension(SaslChannelBinding.class);
1685 final Collection<ChannelBinding> channelBindings = ChannelBinding.of(cbExtension);
1686 final SaslMechanism.Factory factory = new SaslMechanism.Factory(account);
1687 final SaslMechanism saslMechanism =
1688 factory.of(mechanisms, channelBindings, version, SSLSockets.version(this.socket));
1689 this.validate(saslMechanism, mechanisms);
1690 final DowngradeProtection downgradeProtection;
1691 if (cbExtension != null) {
1692 downgradeProtection =
1693 new DowngradeProtection(mechanisms, cbExtension.getChannelBindingTypes());
1694 } else {
1695 downgradeProtection = new DowngradeProtection(mechanisms);
1696 }
1697 if (saslMechanism instanceof ScramMechanism scramMechanism) {
1698 scramMechanism.setDowngradeProtection(downgradeProtection);
1699 }
1700 final boolean quickStartAvailable;
1701 final String firstMessage =
1702 saslMechanism.getClientFirstMessage(sslSocketOrNull(this.socket));
1703 final boolean usingFast = SaslMechanism.hashedToken(saslMechanism);
1704 final AuthenticationRequest authenticate;
1705 final LoginInfo loginInfo;
1706 if (version == SaslMechanism.Version.SASL) {
1707 authenticate = new Auth();
1708 if (!Strings.isNullOrEmpty(firstMessage)) {
1709 authenticate.setContent(firstMessage);
1710 }
1711 quickStartAvailable = false;
1712 loginInfo = new LoginInfo(saslMechanism, version, Collections.emptyList());
1713 } else if (version == SaslMechanism.Version.SASL_2) {
1714 final Authentication authentication = (Authentication) authElement;
1715 final var inline = authentication.getInline();
1716 final boolean sm = inline != null && inline.hasExtension(StreamManagement.class);
1717 final HashedToken.Mechanism hashTokenRequest;
1718 if (usingFast) {
1719 hashTokenRequest = null;
1720 } else if (inline != null) {
1721 hashTokenRequest =
1722 HashedToken.Mechanism.best(
1723 inline.getFastMechanisms(), SSLSockets.version(this.socket));
1724 // TODO warn or fail early if channel binding priority isn’t high enough compared to
1725 // login mechanism
1726 // ChannelBinding.priority(hashTokenRequest.channelBinding)
1727 // <
1728 // ChannelBindingMechanism.getPriority(saslMechanism)
1729 } else {
1730 hashTokenRequest = null;
1731 }
1732 final Collection<String> bindFeatures = Bind2.features(inline);
1733 quickStartAvailable =
1734 sm
1735 && bindFeatures != null
1736 && bindFeatures.containsAll(Bind2.QUICKSTART_FEATURES);
1737 if (bindFeatures != null) {
1738 try {
1739 mXmppConnectionService.restoredFromDatabaseLatch.await();
1740 } catch (final InterruptedException e) {
1741 Log.d(
1742 Config.LOGTAG,
1743 account.getJid().asBareJid()
1744 + ": interrupted while waiting for DB restore during SASL2"
1745 + " bind");
1746 return;
1747 }
1748 }
1749 loginInfo = new LoginInfo(saslMechanism, version, bindFeatures);
1750 this.hashTokenRequest = hashTokenRequest;
1751 authenticate =
1752 generateAuthenticationRequest(
1753 firstMessage, usingFast, hashTokenRequest, bindFeatures, sm);
1754 } else {
1755 throw new AssertionError("Missing implementation for " + version);
1756 }
1757 this.loginInfo = loginInfo;
1758 if (account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, quickStartAvailable)) {
1759 mXmppConnectionService.databaseBackend.updateAccount(account);
1760 }
1761
1762 Log.d(
1763 Config.LOGTAG,
1764 account.getJid().toString()
1765 + ": Authenticating with "
1766 + version
1767 + "/"
1768 + LoginInfo.mechanism(loginInfo).getMechanism());
1769 authenticate.setMechanism(LoginInfo.mechanism(loginInfo));
1770 synchronized (this.mStanzaQueue) {
1771 this.stanzasSentBeforeAuthentication = this.stanzasSent;
1772 tagWriter.writeElement(authenticate);
1773 }
1774 }
1775
1776 private static boolean isFastTokenAvailable(final Authentication authentication) {
1777 final var inline = authentication == null ? null : authentication.getInline();
1778 return inline != null && inline.hasExtension(Fast.class);
1779 }
1780
1781 private void validate(
1782 final @Nullable SaslMechanism saslMechanism, Collection<String> mechanisms)
1783 throws StateChangingException {
1784 if (saslMechanism == null) {
1785 Log.d(
1786 Config.LOGTAG,
1787 account.getJid().asBareJid()
1788 + ": unable to find supported SASL mechanism in "
1789 + mechanisms);
1790 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1791 }
1792 checkRequireChannelBinding(saslMechanism);
1793 if (SaslMechanism.hashedToken(saslMechanism)) {
1794 return;
1795 }
1796 final int pinnedMechanism = account.getPinnedMechanismPriority();
1797 if (pinnedMechanism > saslMechanism.getPriority()) {
1798 Log.e(
1799 Config.LOGTAG,
1800 "Auth failed. Authentication mechanism "
1801 + saslMechanism.getMechanism()
1802 + " has lower priority ("
1803 + saslMechanism.getPriority()
1804 + ") than pinned priority ("
1805 + pinnedMechanism
1806 + "). Possible downgrade attack?");
1807 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
1808 }
1809 }
1810
1811 private void checkRequireChannelBinding(@NonNull final SaslMechanism mechanism)
1812 throws StateChangingException {
1813 if (appSettings.isRequireChannelBinding()) {
1814 if (mechanism instanceof ChannelBindingMechanism) {
1815 return;
1816 }
1817 Log.d(Config.LOGTAG, account.getJid() + ": server did not offer channel binding");
1818 throw new StateChangingException(Account.State.CHANNEL_BINDING);
1819 }
1820 }
1821
1822 private void checkAssignedDomainOrThrow(final Jid jid) throws StateChangingException {
1823 if (jid == null) {
1824 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": bind response is missing jid");
1825 throw new StateChangingException(Account.State.BIND_FAILURE);
1826 }
1827 final var current = this.account.getJid().getDomain();
1828 if (jid.getDomain().equals(current)) {
1829 return;
1830 }
1831 Log.d(
1832 Config.LOGTAG,
1833 account.getJid().asBareJid()
1834 + ": server tried to re-assign domain to "
1835 + jid.getDomain());
1836 throw new StateChangingException(Account.State.BIND_FAILURE);
1837 }
1838
1839 private void checkAssignedDomain(final Jid jid) {
1840 try {
1841 checkAssignedDomainOrThrow(jid);
1842 } catch (final StateChangingException e) {
1843 throw new StateChangingError(e.state);
1844 }
1845 }
1846
1847 private AuthenticationRequest generateAuthenticationRequest(
1848 final String firstMessage, final boolean usingFast) {
1849 return generateAuthenticationRequest(
1850 firstMessage, usingFast, null, Bind2.QUICKSTART_FEATURES, true);
1851 }
1852
1853 private AuthenticationRequest generateAuthenticationRequest(
1854 final String firstMessage,
1855 final boolean usingFast,
1856 final HashedToken.Mechanism hashedTokenRequest,
1857 final Collection<String> bind,
1858 final boolean inlineStreamManagement) {
1859 final var authenticate = new Authenticate();
1860 if (!Strings.isNullOrEmpty(firstMessage)) {
1861 authenticate.addChild("initial-response").setContent(firstMessage);
1862 }
1863 final var userAgent =
1864 authenticate.addExtension(
1865 new UserAgent(
1866 AccountUtils.publicDeviceId(
1867 account, appSettings.getInstallationId())));
1868 userAgent.setSoftware(
1869 String.format("%s %s", BuildConfig.APP_NAME, BuildConfig.VERSION_NAME));
1870 if (!PhoneHelper.isEmulator()) {
1871 userAgent.setDevice(String.format("%s %s", Build.MANUFACTURER, Build.MODEL));
1872 }
1873 // do not include bind if 'inlineStreamManagement' is missing and we have a streamId
1874 // (because we would rather just do a normal SM/resume)
1875 final boolean mayAttemptBind = streamId == null || inlineStreamManagement;
1876 if (bind != null && mayAttemptBind) {
1877 authenticate.addChild(generateBindRequest(bind));
1878 }
1879 if (inlineStreamManagement && streamId != null) {
1880 final var streamId = this.streamId.id;
1881 final var resume = new Resume(streamId, stanzasReceived);
1882 prepareForResume(streamId);
1883 authenticate.addExtension(resume);
1884 }
1885 if (hashedTokenRequest != null) {
1886 authenticate.addExtension(new RequestToken(hashedTokenRequest));
1887 }
1888 if (usingFast) {
1889 authenticate.addExtension(new Fast());
1890 }
1891 return authenticate;
1892 }
1893
1894 private void prepareForResume(final String streamId) {
1895 this.mSmCatchupMessageCounter.set(0);
1896 this.mWaitingForSmCatchup.set(true);
1897 this.pendingResumeId.push(streamId);
1898 }
1899
1900 private Bind generateBindRequest(final Collection<String> bindFeatures) {
1901 Log.d(Config.LOGTAG, "inline bind features: " + bindFeatures);
1902 final var bind = new Bind();
1903 bind.setTag(BuildConfig.APP_NAME);
1904 if (bindFeatures.contains(Namespace.CARBONS)) {
1905 bind.addExtension(new im.conversations.android.xmpp.model.carbons.Enable());
1906 }
1907 if (bindFeatures.contains(Namespace.STREAM_MANAGEMENT)) {
1908 bind.addExtension(new Enable());
1909 }
1910 return bind;
1911 }
1912
1913 private void register() {
1914 final String preAuth = account.getKey(Account.KEY_PRE_AUTH_REGISTRATION_TOKEN);
1915 if (preAuth != null && features.invite()) {
1916 final Iq preAuthRequest = new Iq(Iq.Type.SET);
1917 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
1918 sendUnmodifiedIqPacket(
1919 preAuthRequest,
1920 (response) -> {
1921 if (response.getType() == Iq.Type.RESULT) {
1922 sendRegistryRequest();
1923 } else {
1924 final String error = response.getErrorCondition();
1925 Log.d(
1926 Config.LOGTAG,
1927 account.getJid().asBareJid()
1928 + ": failed to pre auth. "
1929 + error);
1930 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
1931 }
1932 },
1933 true);
1934 } else {
1935 sendRegistryRequest();
1936 }
1937 }
1938
1939 private void sendRegistryRequest() {
1940 final Iq register = new Iq(Iq.Type.GET);
1941 register.query(Namespace.REGISTER);
1942 register.setTo(account.getDomain());
1943 sendUnmodifiedIqPacket(
1944 register,
1945 (packet) -> {
1946 if (packet.getType() == Iq.Type.TIMEOUT) {
1947 return;
1948 }
1949 if (packet.getType() == Iq.Type.ERROR) {
1950 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1951 }
1952 final Element query = packet.query(Namespace.REGISTER);
1953 if (query.hasChild("username") && (query.hasChild("password"))) {
1954 final Iq register1 = new Iq(Iq.Type.SET);
1955 final Element username =
1956 new Element("username").setContent(account.getUsername());
1957 final Element password =
1958 new Element("password").setContent(account.getPassword());
1959 register1.query(Namespace.REGISTER).addChild(username);
1960 register1.query().addChild(password);
1961 register1.setFrom(account.getJid().asBareJid());
1962 sendUnmodifiedIqPacket(register1, this::processRegistrationResponse, true);
1963 } else if (query.hasChild("x", Namespace.DATA)) {
1964 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
1965 final Element blob = query.findChild("data", "urn:xmpp:bob");
1966 final String id = packet.getId();
1967 InputStream is;
1968 if (blob != null) {
1969 try {
1970 final String base64Blob = blob.getContent();
1971 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
1972 is = new ByteArrayInputStream(strBlob);
1973 } catch (Exception e) {
1974 is = null;
1975 }
1976 } else {
1977 final boolean useTor = this.appSettings.isUseTor() || account.isOnion();
1978 try {
1979 final String url = data.getValue("url");
1980 final String fallbackUrl = data.getValue("captcha-fallback-url");
1981 if (url != null) {
1982 is = HttpConnectionManager.open(url, useTor);
1983 } else if (fallbackUrl != null) {
1984 is = HttpConnectionManager.open(fallbackUrl, useTor);
1985 } else {
1986 is = null;
1987 }
1988 } catch (final IOException e) {
1989 Log.d(
1990 Config.LOGTAG,
1991 account.getJid().asBareJid() + ": unable to fetch captcha",
1992 e);
1993 is = null;
1994 }
1995 }
1996
1997 if (is != null) {
1998 Bitmap captcha = BitmapFactory.decodeStream(is);
1999 try {
2000 if (mXmppConnectionService.displayCaptchaRequest(
2001 account, id, data, captcha)) {
2002 return;
2003 }
2004 } catch (Exception e) {
2005 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
2006 }
2007 }
2008 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
2009 } else if (query.hasChild("instructions")
2010 || query.hasChild("x", Namespace.OOB)) {
2011 final String instructions = query.findChildContent("instructions");
2012 final Element oob = query.findChild("x", Namespace.OOB);
2013 final String url = oob == null ? null : oob.findChildContent("url");
2014 if (url != null) {
2015 setAccountCreationFailed(url);
2016 } else if (instructions != null) {
2017 final Matcher matcher = Patterns.URI_HTTP.matcher(instructions);
2018 if (matcher.find()) {
2019 setAccountCreationFailed(
2020 instructions.substring(matcher.start(), matcher.end()));
2021 }
2022 }
2023 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
2024 }
2025 },
2026 true);
2027 }
2028
2029 public void sendCreateAccountWithCaptchaPacket(final String id, final Data data) {
2030 final Iq request = IqGenerator.generateCreateAccountWithCaptcha(account, id, data);
2031 this.sendUnmodifiedIqPacket(request, this::processRegistrationResponse, true);
2032 }
2033
2034 private void processRegistrationResponse(final Iq response) {
2035 if (response.getType() == Iq.Type.RESULT) {
2036 account.setOption(Account.OPTION_REGISTER, false);
2037 Log.d(
2038 Config.LOGTAG,
2039 account.getJid().asBareJid()
2040 + ": successfully registered new account on server");
2041 throw new StateChangingError(Account.State.REGISTRATION_SUCCESSFUL);
2042 } else {
2043 final Account.State state = getRegistrationFailedState(response);
2044 throw new StateChangingError(state);
2045 }
2046 }
2047
2048 @NonNull
2049 private static Account.State getRegistrationFailedState(final Iq response) {
2050 final List<String> PASSWORD_TOO_WEAK_MESSAGES =
2051 Arrays.asList("The password is too weak", "Please use a longer password.");
2052 final var error = response.getError();
2053 final var condition = error == null ? null : error.getCondition();
2054 final Account.State state;
2055 if (condition instanceof Condition.Conflict) {
2056 state = Account.State.REGISTRATION_CONFLICT;
2057 } else if (condition instanceof Condition.ResourceConstraint) {
2058 state = Account.State.REGISTRATION_PLEASE_WAIT;
2059 } else if (condition instanceof Condition.NotAcceptable
2060 && PASSWORD_TOO_WEAK_MESSAGES.contains(error.getTextAsString())) {
2061 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
2062 } else {
2063 state = Account.State.REGISTRATION_FAILED;
2064 }
2065 return state;
2066 }
2067
2068 private void setAccountCreationFailed(final String url) {
2069 final HttpUrl httpUrl = url == null ? null : HttpUrl.parse(url);
2070 if (httpUrl != null && httpUrl.isHttps()) {
2071 this.redirectionUrl = httpUrl;
2072 throw new StateChangingError(Account.State.REGISTRATION_WEB);
2073 }
2074 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
2075 }
2076
2077 public HttpUrl getRedirectionUrl() {
2078 return this.redirectionUrl;
2079 }
2080
2081 public void resetEverything() {
2082 resetAttemptCount(true);
2083 resetStreamId();
2084 clearIqCallbacks();
2085 synchronized (this.mStanzaQueue) {
2086 this.stanzasSent = 0;
2087 this.mStanzaQueue.clear();
2088 }
2089 this.redirectionUrl = null;
2090 getManager(DiscoManager.class).clear();
2091 synchronized (this.commands) {
2092 this.commands.clear();
2093 }
2094 this.loginInfo = null;
2095 }
2096
2097 private void sendBindRequest() {
2098 try {
2099 mXmppConnectionService.restoredFromDatabaseLatch.await();
2100 } catch (InterruptedException e) {
2101 Log.d(
2102 Config.LOGTAG,
2103 account.getJid().asBareJid()
2104 + ": interrupted while waiting for DB restore during bind");
2105 return;
2106 }
2107 clearIqCallbacks();
2108 if (account.getJid().isBareJid()) {
2109 account.setResource(createNewResource());
2110 } else {
2111 fixResource(mXmppConnectionService, account);
2112 }
2113 final Iq iq = new Iq(Iq.Type.SET);
2114 final String resource =
2115 Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND
2116 ? CryptoHelper.random(9)
2117 : account.getResource();
2118 iq.addExtension(new im.conversations.android.xmpp.model.bind.Bind()).setResource(resource);
2119 this.sendUnmodifiedIqPacket(
2120 iq,
2121 (packet) -> {
2122 if (packet.getType() == Iq.Type.TIMEOUT) {
2123 return;
2124 }
2125 final var bind =
2126 packet.getExtension(
2127 im.conversations.android.xmpp.model.bind.Bind.class);
2128 if (bind != null && packet.getType() == Iq.Type.RESULT) {
2129 isBound = true;
2130 final Jid assignedJid = bind.getJid();
2131 checkAssignedDomain(assignedJid);
2132 if (account.setJid(assignedJid)) {
2133 Log.d(
2134 Config.LOGTAG,
2135 account.getJid().asBareJid()
2136 + ": jid changed during bind. updating database");
2137 mXmppConnectionService.databaseBackend.updateAccount(account);
2138 }
2139 if (streamFeatures.hasChild("session")
2140 && !streamFeatures.findChild("session").hasChild("optional")) {
2141 sendStartSession();
2142 } else {
2143 final boolean waitForDisco = enableStreamManagement();
2144 sendPostBindInitialization(waitForDisco, false);
2145 }
2146 } else {
2147 Log.d(
2148 Config.LOGTAG,
2149 account.getJid()
2150 + ": disconnecting because of bind failure ("
2151 + packet);
2152 final var error = packet.getError();
2153 // TODO error.is(Condition)
2154 if (packet.getType() == Iq.Type.ERROR
2155 && error != null
2156 && error.hasChild("conflict")) {
2157 account.setResource(createNewResource());
2158 }
2159 throw new StateChangingError(Account.State.BIND_FAILURE);
2160 }
2161 },
2162 true);
2163 }
2164
2165 private void clearIqCallbacks() {
2166 final Iq failurePacket = new Iq(Iq.Type.TIMEOUT);
2167 final ArrayList<Consumer<Iq>> callbacks = new ArrayList<>();
2168 synchronized (this.packetCallbacks) {
2169 if (this.packetCallbacks.isEmpty()) {
2170 return;
2171 }
2172 Log.d(
2173 Config.LOGTAG,
2174 account.getJid().asBareJid()
2175 + ": clearing "
2176 + this.packetCallbacks.size()
2177 + " iq callbacks");
2178 final var iterator = this.packetCallbacks.values().iterator();
2179 while (iterator.hasNext()) {
2180 final var entry = iterator.next();
2181 if (entry.second.second == null || entry.second.second.cancel(false)) {
2182 callbacks.add(entry.second.first);
2183 }
2184 iterator.remove();
2185 }
2186 }
2187 for (final var callback : callbacks) {
2188 try {
2189 callback.accept(failurePacket);
2190 } catch (StateChangingError error) {
2191 Log.d(
2192 Config.LOGTAG,
2193 account.getJid().asBareJid()
2194 + ": caught StateChangingError("
2195 + error.state.toString()
2196 + ") while clearing callbacks");
2197 // ignore
2198 }
2199 }
2200 Log.d(
2201 Config.LOGTAG,
2202 account.getJid().asBareJid()
2203 + ": done clearing iq callbacks. "
2204 + this.packetCallbacks.size()
2205 + " left");
2206 }
2207
2208 public void sendDiscoTimeout() {
2209 if (mWaitForDisco.compareAndSet(true, false)) {
2210 Log.d(
2211 Config.LOGTAG,
2212 account.getJid().asBareJid() + ": finalizing bind after disco timeout");
2213 finalizeBind();
2214 }
2215 }
2216
2217 private void sendStartSession() {
2218 Log.d(
2219 Config.LOGTAG,
2220 account.getJid().asBareJid() + ": sending legacy session to outdated server");
2221 final Iq startSession = new Iq(Iq.Type.SET);
2222 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
2223 this.sendUnmodifiedIqPacket(
2224 startSession,
2225 (packet) -> {
2226 if (packet.getType() == Iq.Type.RESULT) {
2227 final boolean waitForDisco = enableStreamManagement();
2228 sendPostBindInitialization(waitForDisco, false);
2229 } else if (packet.getType() != Iq.Type.TIMEOUT) {
2230 throw new StateChangingError(Account.State.SESSION_FAILURE);
2231 }
2232 },
2233 true);
2234 }
2235
2236 private boolean enableStreamManagement() {
2237 final boolean streamManagement = this.streamFeatures.streamManagement();
2238 if (streamManagement) {
2239 synchronized (this.mStanzaQueue) {
2240 final var enable = new Enable();
2241 tagWriter.writeStanzaAsync(enable);
2242 stanzasSent = 0;
2243 mStanzaQueue.clear();
2244 }
2245 return true;
2246 } else {
2247 return false;
2248 }
2249 }
2250
2251 private void sendPostBindInitialization(
2252 final boolean waitForDisco, final boolean carbonsEnabled) {
2253 getManager(CarbonsManager.class).setEnabledOnBind(carbonsEnabled);
2254 features.blockListRequested = false;
2255 getManager(DiscoManager.class).clear();
2256 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
2257 mWaitForDisco.set(waitForDisco);
2258 this.lastDiscoStarted = SystemClock.elapsedRealtime();
2259 mXmppConnectionService.scheduleWakeUpCall(
2260 Config.CONNECT_DISCO_TIMEOUT * 1000L, account.getUuid().hashCode());
2261
2262 final var nodeHash = streamFeatures.getCapabilities();
2263 final var serverInfoFuture =
2264 getManager(DiscoManager.class)
2265 .infoOrCache(Entity.discoItem(account.getDomain()), nodeHash);
2266
2267 final var features = getFeatures();
2268 if (!features.bind2()) {
2269 discoverMamPreferences();
2270 }
2271
2272 final var accountInfoFuture =
2273 getManager(DiscoManager.class)
2274 .info(Entity.discoItem(account.getJid().asBareJid()), null);
2275
2276 final var itemsFuture =
2277 getManager(DiscoManager.class).itemsWithInfo(Entity.discoItem(account.getDomain()));
2278
2279 final var catchingServerFuture =
2280 Futures.catching(
2281 serverInfoFuture,
2282 DiscoManager.CapsHashMismatchException.class,
2283 input -> {
2284 Log.d(
2285 Config.LOGTAG,
2286 account.getJid().asBareJid() + ": error in server caps",
2287 input);
2288 return null;
2289 },
2290 MoreExecutors.directExecutor());
2291
2292 Futures.addCallback(
2293 Futures.allAsList(accountInfoFuture, catchingServerFuture),
2294 new FutureCallback<>() {
2295 @Override
2296 public void onSuccess(List<Object> result) {
2297 Log.d(
2298 Config.LOGTAG,
2299 account.getJid().asBareJid() + ": advanced stream future done");
2300 enableAdvancedStreamFeatures();
2301 }
2302
2303 @Override
2304 public void onFailure(@Nullable Throwable throwable) {
2305 Log.d(
2306 Config.LOGTAG,
2307 "could not fetch disco for advanced stream features",
2308 throwable);
2309 }
2310 },
2311 MoreExecutors.directExecutor());
2312
2313 if (mWaitForDisco.get()) {
2314 final ListenableFuture<Void> discoComplete =
2315 Futures.whenAllComplete(serverInfoFuture, accountInfoFuture, itemsFuture)
2316 .call(() -> null, MoreExecutors.directExecutor());
2317 Futures.addCallback(
2318 discoComplete,
2319 new FutureCallback<>() {
2320 @Override
2321 public void onSuccess(Void result) {
2322 if (timeout(serverInfoFuture, accountInfoFuture, itemsFuture)) {
2323 Log.d(
2324 Config.LOGTAG,
2325 account.getJid().asBareJid()
2326 + ": reached timeout while waiting for disco");
2327 return;
2328 }
2329 if (mWaitForDisco.compareAndSet(true, false)) {
2330 finalizeBindOrError();
2331 } else {
2332 Log.d(
2333 Config.LOGTAG,
2334 account.getJid().asBareJid()
2335 + ": disco complete but bind was already"
2336 + " finalized");
2337 }
2338 }
2339
2340 @Override
2341 public void onFailure(@NonNull Throwable t) {
2342 Log.d(Config.LOGTAG, "error in disco: ", t);
2343 }
2344 },
2345 MoreExecutors.directExecutor());
2346 } else {
2347 finalizeBind();
2348 }
2349
2350 if (!mWaitForDisco.get()) {
2351 finalizeBind();
2352 }
2353 this.lastSessionStarted = SystemClock.elapsedRealtime();
2354 }
2355
2356 private boolean timeout(final ListenableFuture<?>... futures) {
2357 for (final ListenableFuture<?> future : futures) {
2358 if (future.isDone()) {
2359 try {
2360 future.get();
2361 } catch (final Exception e) {
2362 if (Throwables.getRootCause(e) instanceof TimeoutException) {
2363 return true;
2364 }
2365 }
2366 }
2367 }
2368 return false;
2369 }
2370
2371 private void discoverMamPreferences() {
2372 final Iq request = new Iq(Iq.Type.GET);
2373 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
2374 sendIqPacket(
2375 request,
2376 (response) -> {
2377 if (response.getType() == Iq.Type.RESULT) {
2378 Element prefs =
2379 response.findChild(
2380 "prefs", MessageArchiveService.Version.MAM_2.namespace);
2381 isMamPreferenceAlways =
2382 "always"
2383 .equals(
2384 prefs == null
2385 ? null
2386 : prefs.getAttribute("default"));
2387 }
2388 });
2389 }
2390
2391 private void discoverCommands() {
2392 final var future =
2393 getManager(DiscoManager.class).commands(Entity.discoItem(account.getDomain()));
2394 Futures.addCallback(
2395 future,
2396 new FutureCallback<>() {
2397 @Override
2398 public void onSuccess(Map<String, Jid> result) {
2399 synchronized (XmppConnection.this.commands) {
2400 XmppConnection.this.commands.clear();
2401 XmppConnection.this.commands.putAll(result);
2402 }
2403 }
2404
2405 @Override
2406 public void onFailure(@NonNull Throwable throwable) {
2407 Log.d(
2408 Config.LOGTAG,
2409 account.getJid().asBareJid() + ": could not fetch commands",
2410 throwable);
2411 }
2412 },
2413 MoreExecutors.directExecutor());
2414 }
2415
2416 public boolean isMamPreferenceAlways() {
2417 return isMamPreferenceAlways;
2418 }
2419
2420 private void finalizeBindOrError() {
2421 try {
2422 finalizeBind();
2423 } catch (final Exception e) {
2424 throw new Error(e);
2425 }
2426 }
2427
2428 private void finalizeBind() {
2429 this.offlineMessagesRetrieved = false;
2430 this.bindListener.run();
2431 this.changeStatusToOnline();
2432 }
2433
2434 private void enableAdvancedStreamFeatures() {
2435 if (getFeatures().blocking() && !features.blockListRequested) {
2436 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
2437 this.sendIqPacket(getIqGenerator().generateGetBlockList(), unregisteredIqListener);
2438 }
2439 for (final OnAdvancedStreamFeaturesLoaded listener :
2440 advancedStreamFeaturesLoadedListeners) {
2441 listener.onAdvancedStreamFeaturesAvailable(account);
2442 }
2443 final var carbonsManager = getManager(CarbonsManager.class);
2444 if (carbonsManager.hasFeature() && !carbonsManager.isEnabled()) {
2445 carbonsManager.enable();
2446 }
2447 if (getFeatures().commands()) {
2448 discoverCommands();
2449 }
2450 }
2451
2452 private void processStreamError(final StreamError streamError) throws IOException {
2453 final var loginInfo = this.loginInfo;
2454 final var isSecureLoggedIn = isSecure() && LoginInfo.isSuccess(loginInfo);
2455 if (isSecureLoggedIn && streamError.hasChild("conflict")) {
2456 if (loginInfo.saslVersion == SaslMechanism.Version.SASL_2) {
2457 this.appSettings.resetInstallationId();
2458 }
2459 account.setResource(createNewResource());
2460 Log.d(
2461 Config.LOGTAG,
2462 account.getJid().asBareJid()
2463 + ": switching resource due to conflict ("
2464 + account.getResource()
2465 + ")");
2466 throw new IOException("Closed stream due to resource conflict");
2467 } else if (streamError.hasChild("host-unknown")) {
2468 throw new StateChangingException(Account.State.HOST_UNKNOWN);
2469 } else if (streamError.hasChild("policy-violation")) {
2470 this.lastConnectionStarted = SystemClock.elapsedRealtime();
2471 final String text = streamError.findChildContent("text");
2472 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": policy violation. " + text);
2473 if (isSecureLoggedIn) {
2474 failPendingMessages(text);
2475 }
2476 throw new StateChangingException(Account.State.POLICY_VIOLATION);
2477 } else if (streamError.hasChild("see-other-host")) {
2478 final String seeOtherHost = streamError.findChildContent("see-other-host");
2479 final Resolver.Result currentResolverResult = this.currentResolverResult;
2480 if (Strings.isNullOrEmpty(seeOtherHost) || currentResolverResult == null) {
2481 Log.d(
2482 Config.LOGTAG,
2483 account.getJid().asBareJid() + ": stream error " + streamError);
2484 throw new StateChangingException(Account.State.STREAM_ERROR);
2485 }
2486 Log.d(
2487 Config.LOGTAG,
2488 account.getJid().asBareJid()
2489 + ": see other host: "
2490 + seeOtherHost
2491 + " "
2492 + currentResolverResult);
2493 final Resolver.Result seeOtherResult = currentResolverResult.seeOtherHost(seeOtherHost);
2494 if (seeOtherResult != null) {
2495 this.seeOtherHostResolverResult = seeOtherResult;
2496 throw new StateChangingException(Account.State.SEE_OTHER_HOST);
2497 } else {
2498 throw new StateChangingException(Account.State.STREAM_ERROR);
2499 }
2500 } else {
2501 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError);
2502 throw new StateChangingException(Account.State.STREAM_ERROR);
2503 }
2504 }
2505
2506 private void failPendingMessages(final String error) {
2507 synchronized (this.mStanzaQueue) {
2508 for (int i = 0; i < mStanzaQueue.size(); ++i) {
2509 final Stanza stanza = mStanzaQueue.valueAt(i);
2510 if (stanza instanceof im.conversations.android.xmpp.model.stanza.Message packet) {
2511 final String id = packet.getId();
2512 final Jid to = packet.getTo();
2513 mXmppConnectionService.markMessage(
2514 account, to.asBareJid(), id, Message.STATUS_SEND_FAILED, error);
2515 }
2516 }
2517 }
2518 }
2519
2520 private boolean establishStream(final SSLSockets.Version sslVersion)
2521 throws IOException, InterruptedException {
2522 final boolean secureConnection = sslVersion != SSLSockets.Version.NONE;
2523 final SaslMechanism quickStartMechanism;
2524 if (secureConnection) {
2525 quickStartMechanism =
2526 SaslMechanism.ensureAvailable(
2527 account.getQuickStartMechanism(),
2528 sslVersion,
2529 appSettings.isRequireChannelBinding());
2530 } else {
2531 quickStartMechanism = null;
2532 }
2533 if (secureConnection
2534 && Config.QUICKSTART_ENABLED
2535 && quickStartMechanism != null
2536 && account.isOptionSet(Account.OPTION_QUICKSTART_AVAILABLE)) {
2537 mXmppConnectionService.restoredFromDatabaseLatch.await();
2538 this.loginInfo =
2539 new LoginInfo(
2540 quickStartMechanism,
2541 SaslMechanism.Version.SASL_2,
2542 Bind2.QUICKSTART_FEATURES);
2543 final boolean usingFast = quickStartMechanism instanceof HashedToken;
2544 final AuthenticationRequest authenticate =
2545 generateAuthenticationRequest(
2546 quickStartMechanism.getClientFirstMessage(sslSocketOrNull(this.socket)),
2547 usingFast);
2548 authenticate.setMechanism(quickStartMechanism);
2549 sendStartStream(true, false);
2550 synchronized (this.mStanzaQueue) {
2551 this.stanzasSentBeforeAuthentication = this.stanzasSent;
2552 tagWriter.writeElement(authenticate);
2553 }
2554 Log.d(
2555 Config.LOGTAG,
2556 account.getJid().toString()
2557 + ": quick start with "
2558 + quickStartMechanism.getMechanism());
2559 return true;
2560 } else {
2561 sendStartStream(secureConnection, true);
2562 return false;
2563 }
2564 }
2565
2566 private void sendStartStream(final boolean from, final boolean flush) throws IOException {
2567 final Tag stream = Tag.start("stream:stream");
2568 stream.setAttribute("to", account.getServer());
2569 if (from) {
2570 stream.setAttribute("from", account.getJid().asBareJid().toString());
2571 }
2572 stream.setAttribute("version", "1.0");
2573 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
2574 stream.setAttribute("xmlns", Namespace.JABBER_CLIENT);
2575 stream.setAttribute("xmlns:stream", Namespace.STREAMS);
2576 tagWriter.writeTag(stream, flush);
2577 }
2578
2579 private static String createNewResource() {
2580 return String.format("%s.%s", BuildConfig.APP_NAME, CryptoHelper.random(3));
2581 }
2582
2583 public void sendRequestStanza() {
2584 this.sendPacket(new Request());
2585 }
2586
2587 public ListenableFuture<Iq> sendIqPacket(final Iq request) {
2588 final SettableFuture<Iq> settable = SettableFuture.create();
2589 this.sendIqPacket(
2590 request,
2591 response -> {
2592 final var type = response.getType();
2593 switch (type) {
2594 case RESULT -> settable.set(response);
2595 case TIMEOUT -> settable.setException(new TimeoutException());
2596 default -> settable.setException(new IqErrorResponseException(response));
2597 }
2598 });
2599 return settable;
2600 }
2601
2602 public String sendIqPacket(final Iq packet, final Consumer<Iq> callback) {
2603 return sendIqPacket(packet, callback, null);
2604 }
2605
2606 public String sendIqPacket(final Iq packet, final Consumer<Iq> callback, Long timeout) {
2607 packet.setFrom(account.getJid());
2608 return this.sendUnmodifiedIqPacket(packet, callback, false, timeout);
2609 }
2610
2611 public String sendUnmodifiedIqPacket(final Iq packet, final Consumer<Iq> callback, boolean force) {
2612 return sendUnmodifiedIqPacket(packet, callback, force, null);
2613 }
2614
2615 public synchronized String sendUnmodifiedIqPacket(
2616 final Iq packet, final Consumer<Iq> callback, boolean force, Long timeout) {
2617 // TODO if callback != null verify that type is get or set
2618 if (packet.getId() == null) {
2619 packet.setId(CryptoHelper.random(9));
2620 }
2621 if (callback != null) {
2622 synchronized (this.packetCallbacks) {
2623 ScheduledFuture timeoutFuture = null;
2624 if (timeout != null) {
2625 timeoutFuture = SCHEDULER.schedule(() -> {
2626 synchronized (this.packetCallbacks) {
2627 final var failurePacket = new Iq(Iq.Type.TIMEOUT);
2628 final var removedCallback = packetCallbacks.remove(packet.getId());
2629 if (removedCallback != null) removedCallback.second.first.accept(failurePacket);
2630 }
2631 }, timeout, TimeUnit.SECONDS);
2632 }
2633 packetCallbacks.put(packet.getId(), new Pair<>(packet, new Pair<>(callback, timeoutFuture)));
2634 }
2635 }
2636 this.sendPacket(packet, force);
2637 return packet.getId();
2638 }
2639
2640 public void sendResultFor(final Iq request, final Extension... extensions) {
2641 final var from = request.getFrom();
2642 final var id = request.getId();
2643 final var response = new Iq(Iq.Type.RESULT);
2644 response.setTo(from);
2645 response.setId(id);
2646 for (final Extension extension : extensions) {
2647 response.addExtension(extension);
2648 }
2649 this.sendPacket(response);
2650 }
2651
2652 public void sendErrorFor(
2653 final Iq request,
2654 final im.conversations.android.xmpp.model.error.Error.Type type,
2655 final Condition condition,
2656 final im.conversations.android.xmpp.model.error.Error.Extension... extensions) {
2657 final var from = request.getFrom();
2658 final var id = request.getId();
2659 final var response = new Iq(Iq.Type.ERROR);
2660 response.setTo(from);
2661 response.setId(id);
2662 final var error =
2663 response.addExtension(new im.conversations.android.xmpp.model.error.Error());
2664 error.setType(type);
2665 error.setCondition(condition);
2666 error.addExtensions(extensions);
2667 this.sendPacket(response);
2668 }
2669
2670 public void sendMessagePacket(final im.conversations.android.xmpp.model.stanza.Message packet) {
2671 this.sendPacket(packet);
2672 }
2673
2674 public void sendPresencePacket(final Presence packet) {
2675 this.sendPacket(packet);
2676 }
2677
2678 private synchronized void sendPacket(final StreamElement packet) {
2679 sendPacket(packet, false);
2680 }
2681
2682 private synchronized void sendPacket(final StreamElement packet, final boolean force) {
2683 if (stanzasSent == Integer.MAX_VALUE) {
2684 resetStreamId();
2685 disconnect(true);
2686 return;
2687 }
2688 synchronized (this.mStanzaQueue) {
2689 if (force || isBound) {
2690 tagWriter.writeStanzaAsync(packet);
2691 } else {
2692 Log.d(
2693 Config.LOGTAG,
2694 account.getJid().asBareJid()
2695 + " do not write stanza to unbound stream "
2696 + packet.toString());
2697 }
2698 if (packet instanceof Stanza stanza) {
2699 if (this.mStanzaQueue.size() != 0) {
2700 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
2701 if (currentHighestKey != stanzasSent) {
2702 throw new AssertionError("Stanza count messed up");
2703 }
2704 }
2705
2706 ++stanzasSent;
2707 if (Config.EXTENDED_SM_LOGGING) {
2708 Log.d(
2709 Config.LOGTAG,
2710 account.getJid().asBareJid()
2711 + ": counting outbound "
2712 + packet.getName()
2713 + " as #"
2714 + stanzasSent);
2715 }
2716 this.mStanzaQueue.append(stanzasSent, stanza);
2717 if (stanza instanceof im.conversations.android.xmpp.model.stanza.Message
2718 && stanza.getId() != null
2719 && inSmacksSession) {
2720 if (Config.EXTENDED_SM_LOGGING) {
2721 Log.d(
2722 Config.LOGTAG,
2723 account.getJid().asBareJid()
2724 + ": requesting ack for message stanza #"
2725 + stanzasSent);
2726 }
2727 tagWriter.writeStanzaAsync(new Request());
2728 }
2729 }
2730 }
2731 }
2732
2733 public void sendPing() {
2734 this.getManager(PingManager.class).ping();
2735 this.lastPingSent = SystemClock.elapsedRealtime();
2736 }
2737
2738 public void setOnJinglePacketReceivedListener(final OnJinglePacketReceived listener) {
2739 this.jingleListener = listener;
2740 }
2741
2742 public void setOnStatusChangedListener(final OnStatusChanged listener) {
2743 this.statusListener = listener;
2744 }
2745
2746 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
2747 this.acknowledgedListener = listener;
2748 }
2749
2750 public void addOnAdvancedStreamFeaturesAvailableListener(
2751 final OnAdvancedStreamFeaturesLoaded listener) {
2752 this.advancedStreamFeaturesLoadedListeners.add(listener);
2753 }
2754
2755 private void forceCloseSocket() {
2756 FileBackend.close(this.socket);
2757 FileBackend.close(this.tagReader);
2758 }
2759
2760 public void interrupt() {
2761 if (this.mThread != null) {
2762 this.mThread.interrupt();
2763 }
2764 }
2765
2766 public void disconnect(final boolean force) {
2767 interrupt();
2768 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
2769 if (force) {
2770 forceCloseSocket();
2771 } else {
2772 final TagWriter currentTagWriter = this.tagWriter;
2773 if (currentTagWriter.isActive()) {
2774 currentTagWriter.finish();
2775 final Socket currentSocket = this.socket;
2776 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
2777 try {
2778 currentTagWriter.await(1, TimeUnit.SECONDS);
2779 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
2780 currentTagWriter.writeTag(Tag.end("stream:stream"));
2781 if (streamCountDownLatch != null) {
2782 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
2783 Log.d(
2784 Config.LOGTAG,
2785 account.getJid().asBareJid() + ": remote ended stream");
2786 } else {
2787 Log.d(
2788 Config.LOGTAG,
2789 account.getJid().asBareJid()
2790 + ": remote has not closed socket. force closing");
2791 }
2792 }
2793 } catch (InterruptedException e) {
2794 Log.d(
2795 Config.LOGTAG,
2796 account.getJid().asBareJid()
2797 + ": interrupted while gracefully closing stream");
2798 } catch (final IOException e) {
2799 Log.d(
2800 Config.LOGTAG,
2801 account.getJid().asBareJid()
2802 + ": io exception during disconnect ("
2803 + e.getMessage()
2804 + ")");
2805 } finally {
2806 FileBackend.close(currentSocket);
2807 }
2808 } else {
2809 forceCloseSocket();
2810 }
2811 }
2812 }
2813
2814 private void resetStreamId() {
2815 this.pendingResumeId.clear();
2816 this.streamId = null;
2817 this.boundStreamFeatures = null;
2818 }
2819
2820 public <M extends AbstractManager> M getManager(final Class<M> clazz) {
2821 return this.managers.getInstance(clazz);
2822 }
2823
2824 private List<Entry<Jid, InfoQuery>> findDiscoItemsByFeature(final String feature) {
2825 final List<Entry<Jid, InfoQuery>> items = new ArrayList<>();
2826 for (final Entry<Jid, InfoQuery> cursor :
2827 getManager(DiscoManager.class).getServerItems().entrySet()) {
2828 if (cursor.getValue().getFeatureStrings().contains(feature)) {
2829 items.add(cursor);
2830 }
2831 }
2832 return items;
2833 }
2834
2835 public Entry<Jid, InfoQuery> getServiceDiscoveryResultByFeature(final String feature) {
2836 return Iterables.getFirst(findDiscoItemsByFeature(feature), null);
2837 }
2838
2839 public Jid findDiscoItemByFeature(final String feature) {
2840 final var items = findDiscoItemsByFeature(feature);
2841 if (items.isEmpty()) {
2842 return null;
2843 }
2844 return Iterables.getFirst(items, null).getKey();
2845 }
2846
2847 public boolean r() {
2848 if (getFeatures().sm()) {
2849 this.tagWriter.writeStanzaAsync(new Request());
2850 return true;
2851 } else {
2852 return false;
2853 }
2854 }
2855
2856 public List<String> getMucServersWithholdAccount() {
2857 final List<String> servers = getMucServers();
2858 servers.remove(account.getDomain().toString());
2859 return servers;
2860 }
2861
2862 public List<String> getMucServers() {
2863 List<String> servers = new ArrayList<>();
2864 for (final Entry<Jid, InfoQuery> entry :
2865 getManager(DiscoManager.class).getServerItems().entrySet()) {
2866 final var value = entry.getValue();
2867 if (value.getFeatureStrings().contains("http://jabber.org/protocol/muc")
2868 && value.hasIdentityWithCategoryAndType("conference", "text")
2869 && !value.getFeatureStrings().contains("jabber:iq:gateway")
2870 && !value.hasIdentityWithCategoryAndType("conference", "irc")) {
2871 servers.add(entry.getKey().toString());
2872 }
2873 }
2874 return servers;
2875 }
2876
2877 public String getMucServer() {
2878 return Iterables.getFirst(getMucServers(), null);
2879 }
2880
2881 public int getTimeToNextAttempt(final boolean aggressive) {
2882 final int interval;
2883 if (aggressive) {
2884 interval = Math.min((int) (3 * Math.pow(1.3, attempt)), 60);
2885 } else {
2886 final int additionalTime =
2887 account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
2888 interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
2889 }
2890 final var connectionDuration = Ints.saturatedCast(getConnectionDuration() / 1000);
2891 return interval - connectionDuration;
2892 }
2893
2894 public int getAttempt() {
2895 return this.attempt;
2896 }
2897
2898 public Features getFeatures() {
2899 return this.features;
2900 }
2901
2902 public long getLastSessionEstablished() {
2903 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
2904 return System.currentTimeMillis() - diff;
2905 }
2906
2907 public long getConnectionDuration() {
2908 return SystemClock.elapsedRealtime() - this.lastConnectionStarted;
2909 }
2910
2911 public long getDiscoDuration() {
2912 return SystemClock.elapsedRealtime() - this.lastDiscoStarted;
2913 }
2914
2915 public long getLastPingSent() {
2916 return this.lastPingSent;
2917 }
2918
2919 public long getLastPacketReceived() {
2920 return this.lastPacketReceived;
2921 }
2922
2923 public void sendActive() {
2924 this.sendPacket(new Active());
2925 }
2926
2927 public void sendInactive() {
2928 this.sendPacket(new Inactive());
2929 }
2930
2931 public void resetAttemptCount(boolean resetConnectTime) {
2932 this.attempt = 0;
2933 if (resetConnectTime) {
2934 this.lastConnectionStarted = 0;
2935 }
2936 }
2937
2938 public void setInteractive(boolean interactive) {
2939 this.mInteractive = interactive;
2940 }
2941
2942 private IqGenerator getIqGenerator() {
2943 return mXmppConnectionService.getIqGenerator();
2944 }
2945
2946 public void trackOfflineMessageRetrieval(boolean trackOfflineMessageRetrieval) {
2947 if (trackOfflineMessageRetrieval) {
2948 getManager(PingManager.class)
2949 .ping(
2950 () -> {
2951 Log.d(
2952 Config.LOGTAG,
2953 account.getJid().asBareJid()
2954 + ": got ping response after sending initial"
2955 + " presence");
2956 this.offlineMessagesRetrieved = true;
2957 });
2958 } else {
2959 this.offlineMessagesRetrieved = true;
2960 }
2961 }
2962
2963 public boolean isOfflineMessagesRetrieved() {
2964 return this.offlineMessagesRetrieved;
2965 }
2966
2967 public void fetchRoster() {
2968 final Iq iqPacket = new Iq(Iq.Type.GET);
2969 final var version = account.getRosterVersion();
2970 if (Strings.isNullOrEmpty(account.getRosterVersion())) {
2971 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": fetching roster");
2972 } else {
2973 Log.d(
2974 Config.LOGTAG,
2975 account.getJid().asBareJid() + ": fetching roster version " + version);
2976 }
2977 iqPacket.query(Namespace.ROSTER).setAttribute("ver", version);
2978 sendIqPacket(iqPacket, unregisteredIqListener);
2979 }
2980
2981 public void triggerConnectionTimeout() {
2982 final var duration = getConnectionDuration();
2983 Log.d(
2984 Config.LOGTAG,
2985 account.getJid().asBareJid() + ": connection timeout after " + duration + "ms");
2986
2987 // last connection time gets reset so time to next attempt is calculated correctly
2988 this.lastConnectionStarted = SystemClock.elapsedRealtime();
2989
2990 // interrupt needs to be called before status change; otherwise we interrupt the newly
2991 // created thread
2992 this.interrupt();
2993 this.forceCloseSocket();
2994 this.changeStatus(Account.State.CONNECTION_TIMEOUT);
2995 }
2996
2997 public Account getAccount() {
2998 return this.account;
2999 }
3000
3001 public Features getStreamFeatures() {
3002 return this.features;
3003 }
3004
3005 private class MyKeyManager implements X509KeyManager {
3006 @Override
3007 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
3008 return account.getPrivateKeyAlias();
3009 }
3010
3011 @Override
3012 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
3013 return null;
3014 }
3015
3016 @Override
3017 public X509Certificate[] getCertificateChain(String alias) {
3018 Log.d(Config.LOGTAG, "getting certificate chain");
3019 try {
3020 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
3021 } catch (final Exception e) {
3022 Log.d(Config.LOGTAG, "could not get certificate chain", e);
3023 return new X509Certificate[0];
3024 }
3025 }
3026
3027 @Override
3028 public String[] getClientAliases(String s, Principal[] principals) {
3029 final String alias = account.getPrivateKeyAlias();
3030 return alias != null ? new String[] {alias} : new String[0];
3031 }
3032
3033 @Override
3034 public String[] getServerAliases(String s, Principal[] principals) {
3035 return new String[0];
3036 }
3037
3038 @Override
3039 public PrivateKey getPrivateKey(String alias) {
3040 try {
3041 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
3042 } catch (Exception e) {
3043 return null;
3044 }
3045 }
3046 }
3047
3048 private static class LoginInfo {
3049 public final SaslMechanism saslMechanism;
3050 public final SaslMechanism.Version saslVersion;
3051 public final List<String> inlineBindFeatures;
3052 public final AtomicBoolean success = new AtomicBoolean(false);
3053
3054 private LoginInfo(
3055 final SaslMechanism saslMechanism,
3056 final SaslMechanism.Version saslVersion,
3057 final Collection<String> inlineBindFeatures) {
3058 Preconditions.checkNotNull(saslMechanism, "SASL Mechanism must not be null");
3059 Preconditions.checkNotNull(saslVersion, "SASL version must not be null");
3060 this.saslMechanism = saslMechanism;
3061 this.saslVersion = saslVersion;
3062 this.inlineBindFeatures =
3063 inlineBindFeatures == null
3064 ? Collections.emptyList()
3065 : ImmutableList.copyOf(inlineBindFeatures);
3066 }
3067
3068 public static SaslMechanism mechanism(final LoginInfo loginInfo) {
3069 return loginInfo == null ? null : loginInfo.saslMechanism;
3070 }
3071
3072 public void success(final String challenge, final SSLSocket sslSocket)
3073 throws SaslMechanism.AuthenticationException {
3074 if (Thread.currentThread().isInterrupted()) {
3075 throw new SaslMechanism.AuthenticationException("Race condition during auth");
3076 }
3077 final var response = this.saslMechanism.getResponse(challenge, sslSocket);
3078 if (!Strings.isNullOrEmpty(response)) {
3079 throw new SaslMechanism.AuthenticationException(
3080 "processing success yielded another response");
3081 }
3082 if (this.success.compareAndSet(false, true)) {
3083 return;
3084 }
3085 throw new SaslMechanism.AuthenticationException("Process 'success' twice");
3086 }
3087
3088 public static boolean isSuccess(final LoginInfo loginInfo) {
3089 return loginInfo != null && loginInfo.success.get();
3090 }
3091 }
3092
3093 private static class StreamId {
3094 public final String id;
3095 public final Resolver.Result location;
3096
3097 private StreamId(String id, Resolver.Result location) {
3098 this.id = id;
3099 this.location = location;
3100 }
3101
3102 @NonNull
3103 @Override
3104 public String toString() {
3105 return MoreObjects.toStringHelper(this)
3106 .add("id", id)
3107 .add("location", location)
3108 .toString();
3109 }
3110 }
3111
3112 private static class StateChangingError extends Error {
3113 private final Account.State state;
3114
3115 public StateChangingError(Account.State state) {
3116 this.state = state;
3117 }
3118 }
3119
3120 private static class StateChangingException extends IOException {
3121 private final Account.State state;
3122
3123 public StateChangingException(Account.State state) {
3124 this.state = state;
3125 }
3126 }
3127
3128 public abstract static class Delegate {
3129
3130 protected final XmppConnectionService context;
3131 protected final XmppConnection connection;
3132
3133 protected Delegate(final XmppConnectionService context, final XmppConnection connection) {
3134 this.context = context;
3135 this.connection = connection;
3136 }
3137
3138 protected Account getAccount() {
3139 return connection.account;
3140 }
3141
3142 protected DatabaseBackend getDatabase() {
3143 return DatabaseBackend.getInstance(context);
3144 }
3145
3146 protected <T extends AbstractManager> T getManager(final Class<T> type) {
3147 return connection.getManager(type);
3148 }
3149 }
3150
3151 public class Features {
3152 private final XmppConnection connection;
3153
3154 // TODO move these three into their respective managers or into XmppConnection
3155 private boolean encryptionEnabled = false;
3156 private boolean blockListRequested = false;
3157
3158 public Features(final XmppConnection connection) {
3159 this.connection = connection;
3160 }
3161
3162 private boolean hasDiscoFeature(final Jid server, final String feature) {
3163 final var infoQuery = getManager(DiscoManager.class).get(server);
3164 return infoQuery != null && infoQuery.getFeatureStrings().contains(feature);
3165 }
3166
3167 public boolean commands() {
3168 return hasDiscoFeature(account.getDomain(), Namespace.COMMANDS);
3169 }
3170
3171 public boolean easyOnboardingInvites() {
3172 synchronized (commands) {
3173 return commands.containsKey(Namespace.EASY_ONBOARDING_INVITE);
3174 }
3175 }
3176
3177 public boolean bookmarksConversion() {
3178 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION)
3179 && pepPublishOptions();
3180 }
3181
3182 public boolean blocking() {
3183 return hasDiscoFeature(account.getDomain(), Namespace.BLOCKING);
3184 }
3185
3186 public boolean spamReporting() {
3187 return hasDiscoFeature(account.getDomain(), Namespace.REPORTING);
3188 }
3189
3190 public boolean flexibleOfflineMessageRetrieval() {
3191 return hasDiscoFeature(
3192 account.getDomain(), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
3193 }
3194
3195 public boolean register() {
3196 return hasDiscoFeature(account.getDomain(), Namespace.REGISTER);
3197 }
3198
3199 public boolean invite() {
3200 return connection.streamFeatures != null
3201 && connection.streamFeatures.hasChild("register", Namespace.INVITE);
3202 }
3203
3204 public boolean sm() {
3205 return streamId != null
3206 || (connection.streamFeatures != null
3207 && connection.streamFeatures.streamManagement());
3208 }
3209
3210 public boolean csi() {
3211 return connection.streamFeatures != null
3212 && connection.streamFeatures.clientStateIndication();
3213 }
3214
3215 public boolean pep() {
3216 final var infoQuery = getManager(DiscoManager.class).get(account.getJid().asBareJid());
3217 return infoQuery != null && infoQuery.hasIdentityWithCategoryAndType("pubsub", "pep");
3218 }
3219
3220 public boolean pepPersistent() {
3221 final var infoQuery = getManager(DiscoManager.class).get(account.getJid().asBareJid());
3222 return infoQuery != null
3223 && infoQuery
3224 .getFeatureStrings()
3225 .contains("http://jabber.org/protocol/pubsub#persistent-items");
3226 }
3227
3228 public boolean bind2() {
3229 final var loginInfo = XmppConnection.this.loginInfo;
3230 return loginInfo != null && !loginInfo.inlineBindFeatures.isEmpty();
3231 }
3232
3233 public boolean sasl2() {
3234 final var loginInfo = XmppConnection.this.loginInfo;
3235 return loginInfo != null && loginInfo.saslVersion == SaslMechanism.Version.SASL_2;
3236 }
3237
3238 public String loginMechanism() {
3239 final var loginInfo = XmppConnection.this.loginInfo;
3240 return loginInfo == null ? null : loginInfo.saslMechanism.getMechanism();
3241 }
3242
3243 public boolean pepPublishOptions() {
3244 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
3245 }
3246
3247 public boolean pepConfigNodeMax() {
3248 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_CONFIG_NODE_MAX);
3249 }
3250
3251 public boolean pepOmemoWhitelisted() {
3252 return hasDiscoFeature(
3253 account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
3254 }
3255
3256 public boolean mam() {
3257 return MessageArchiveService.Version.has(getAccountFeatures());
3258 }
3259
3260 public Collection<String> getAccountFeatures() {
3261 final var infoQuery = getManager(DiscoManager.class).get(account.getJid().asBareJid());
3262 return infoQuery == null ? Collections.emptyList() : infoQuery.getFeatureStrings();
3263 }
3264
3265 public boolean push() {
3266 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
3267 || hasDiscoFeature(account.getDomain(), Namespace.PUSH);
3268 }
3269
3270 public boolean rosterVersioning() {
3271 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
3272 }
3273
3274 public void setBlockListRequested(boolean value) {
3275 this.blockListRequested = value;
3276 }
3277
3278 public HttpUrl getServiceOutageStatus() {
3279 final var disco = getManager(DiscoManager.class).get(account.getDomain());
3280 if (disco == null) {
3281 return null;
3282 }
3283 final var address =
3284 disco.getServiceDiscoveryExtension(
3285 Namespace.SERVICE_OUTAGE_STATUS, "external-status-addresses");
3286 if (Strings.isNullOrEmpty(address)) {
3287 return null;
3288 }
3289 return HttpUrl.parse(address);
3290 }
3291
3292 public boolean httpUpload(long fileSize) {
3293 if (Config.DISABLE_HTTP_UPLOAD) {
3294 return false;
3295 }
3296 final var result = getServiceDiscoveryResultByFeature(Namespace.HTTP_UPLOAD);
3297 if (result == null) {
3298 return false;
3299 }
3300 final long maxSize;
3301 try {
3302 maxSize =
3303 Long.parseLong(
3304 result.getValue()
3305 .getServiceDiscoveryExtension(
3306 Namespace.HTTP_UPLOAD, "max-file-size"));
3307 } catch (final Exception e) {
3308 return true;
3309 }
3310 if (fileSize <= maxSize) {
3311 return true;
3312 } else {
3313 Log.d(
3314 Config.LOGTAG,
3315 account.getJid().asBareJid()
3316 + ": http upload is not available for files with"
3317 + " size "
3318 + fileSize
3319 + " (max is "
3320 + maxSize
3321 + ")");
3322 return false;
3323 }
3324 }
3325
3326 public long getMaxHttpUploadSize() {
3327 final var result = getServiceDiscoveryResultByFeature(Namespace.HTTP_UPLOAD);
3328 if (result == null) {
3329 return -1;
3330 }
3331 try {
3332 return Long.parseLong(
3333 result.getValue()
3334 .getServiceDiscoveryExtension(
3335 Namespace.HTTP_UPLOAD, "max-file-size"));
3336 } catch (final Exception e) {
3337 return -1;
3338 // ignored
3339 }
3340 }
3341
3342 public boolean stanzaIds() {
3343 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
3344 }
3345
3346 public boolean bookmarks2() {
3347 return pepPublishOptions()
3348 && pepConfigNodeMax()
3349 && hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS2_COMPAT);
3350 }
3351
3352 public boolean externalServiceDiscovery() {
3353 return hasDiscoFeature(account.getDomain(), Namespace.EXTERNAL_SERVICE_DISCOVERY);
3354 }
3355
3356 public boolean mds() {
3357 return pepPublishOptions()
3358 && pepConfigNodeMax()
3359 && Config.MESSAGE_DISPLAYED_SYNCHRONIZATION;
3360 }
3361
3362 public boolean mdsServerAssist() {
3363 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.MDS_DISPLAYED);
3364 }
3365 }
3366}