1package eu.siacs.conversations.xmpp;
2
3import static eu.siacs.conversations.utils.Random.SECURE_RANDOM;
4
5import android.content.Context;
6import android.graphics.Bitmap;
7import android.graphics.BitmapFactory;
8import android.os.Build;
9import android.os.SystemClock;
10import android.security.KeyChain;
11import android.util.Base64;
12import android.util.Log;
13import android.util.Pair;
14import android.util.SparseArray;
15import androidx.annotation.NonNull;
16import androidx.annotation.Nullable;
17import com.google.common.base.MoreObjects;
18import com.google.common.base.Optional;
19import com.google.common.base.Preconditions;
20import com.google.common.base.Strings;
21import com.google.common.collect.ImmutableList;
22import com.google.common.collect.Iterables;
23import com.google.common.primitives.Ints;
24import eu.siacs.conversations.AppSettings;
25import eu.siacs.conversations.BuildConfig;
26import eu.siacs.conversations.Config;
27import eu.siacs.conversations.R;
28import eu.siacs.conversations.crypto.XmppDomainVerifier;
29import eu.siacs.conversations.crypto.axolotl.AxolotlService;
30import eu.siacs.conversations.crypto.sasl.ChannelBinding;
31import eu.siacs.conversations.crypto.sasl.ChannelBindingMechanism;
32import eu.siacs.conversations.crypto.sasl.DowngradeProtection;
33import eu.siacs.conversations.crypto.sasl.HashedToken;
34import eu.siacs.conversations.crypto.sasl.SaslMechanism;
35import eu.siacs.conversations.crypto.sasl.ScramMechanism;
36import eu.siacs.conversations.entities.Account;
37import eu.siacs.conversations.entities.Message;
38import eu.siacs.conversations.entities.ServiceDiscoveryResult;
39import eu.siacs.conversations.generator.IqGenerator;
40import eu.siacs.conversations.http.HttpConnectionManager;
41import eu.siacs.conversations.parser.IqParser;
42import eu.siacs.conversations.parser.MessageParser;
43import eu.siacs.conversations.parser.PresenceParser;
44import eu.siacs.conversations.persistance.FileBackend;
45import eu.siacs.conversations.services.MemorizingTrustManager;
46import eu.siacs.conversations.services.MessageArchiveService;
47import eu.siacs.conversations.services.NotificationService;
48import eu.siacs.conversations.services.XmppConnectionService;
49import eu.siacs.conversations.ui.util.PendingItem;
50import eu.siacs.conversations.utils.AccountUtils;
51import eu.siacs.conversations.utils.CryptoHelper;
52import eu.siacs.conversations.utils.Patterns;
53import eu.siacs.conversations.utils.PhoneHelper;
54import eu.siacs.conversations.utils.Resolver;
55import eu.siacs.conversations.utils.SSLSockets;
56import eu.siacs.conversations.utils.SocksSocketFactory;
57import eu.siacs.conversations.utils.XmlHelper;
58import eu.siacs.conversations.xml.Element;
59import eu.siacs.conversations.xml.LocalizedContent;
60import eu.siacs.conversations.xml.Namespace;
61import eu.siacs.conversations.xml.Tag;
62import eu.siacs.conversations.xml.TagWriter;
63import eu.siacs.conversations.xml.XmlReader;
64import eu.siacs.conversations.xmpp.bind.Bind2;
65import eu.siacs.conversations.xmpp.forms.Data;
66import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
67import im.conversations.android.xmpp.model.AuthenticationFailure;
68import im.conversations.android.xmpp.model.AuthenticationRequest;
69import im.conversations.android.xmpp.model.AuthenticationStreamFeature;
70import im.conversations.android.xmpp.model.StreamElement;
71import im.conversations.android.xmpp.model.bind2.Bind;
72import im.conversations.android.xmpp.model.bind2.Bound;
73import im.conversations.android.xmpp.model.cb.SaslChannelBinding;
74import im.conversations.android.xmpp.model.csi.Active;
75import im.conversations.android.xmpp.model.csi.Inactive;
76import im.conversations.android.xmpp.model.error.Condition;
77import im.conversations.android.xmpp.model.fast.Fast;
78import im.conversations.android.xmpp.model.fast.RequestToken;
79import im.conversations.android.xmpp.model.jingle.Jingle;
80import im.conversations.android.xmpp.model.sasl.Auth;
81import im.conversations.android.xmpp.model.sasl.Failure;
82import im.conversations.android.xmpp.model.sasl.Mechanisms;
83import im.conversations.android.xmpp.model.sasl.Response;
84import im.conversations.android.xmpp.model.sasl.SaslError;
85import im.conversations.android.xmpp.model.sasl.Success;
86import im.conversations.android.xmpp.model.sasl2.Authenticate;
87import im.conversations.android.xmpp.model.sasl2.Authentication;
88import im.conversations.android.xmpp.model.sasl2.UserAgent;
89import im.conversations.android.xmpp.model.sm.Ack;
90import im.conversations.android.xmpp.model.sm.Enable;
91import im.conversations.android.xmpp.model.sm.Enabled;
92import im.conversations.android.xmpp.model.sm.Failed;
93import im.conversations.android.xmpp.model.sm.Request;
94import im.conversations.android.xmpp.model.sm.Resume;
95import im.conversations.android.xmpp.model.sm.Resumed;
96import im.conversations.android.xmpp.model.sm.StreamManagement;
97import im.conversations.android.xmpp.model.stanza.Iq;
98import im.conversations.android.xmpp.model.stanza.Presence;
99import im.conversations.android.xmpp.model.stanza.Stanza;
100import im.conversations.android.xmpp.model.streams.StreamError;
101import im.conversations.android.xmpp.model.tls.Proceed;
102import im.conversations.android.xmpp.model.tls.StartTls;
103import im.conversations.android.xmpp.processor.BindProcessor;
104import java.io.ByteArrayInputStream;
105import java.io.IOException;
106import java.io.InputStream;
107import java.net.ConnectException;
108import java.net.IDN;
109import java.net.InetAddress;
110import java.net.InetSocketAddress;
111import java.net.Socket;
112import java.net.UnknownHostException;
113import java.security.KeyManagementException;
114import java.security.NoSuchAlgorithmException;
115import java.security.Principal;
116import java.security.PrivateKey;
117import java.security.cert.X509Certificate;
118import java.util.ArrayList;
119import java.util.Arrays;
120import java.util.Collection;
121import java.util.Collections;
122import java.util.HashMap;
123import java.util.HashSet;
124import java.util.Hashtable;
125import java.util.Iterator;
126import java.util.List;
127import java.util.Map.Entry;
128import java.util.Set;
129import java.util.concurrent.CountDownLatch;
130import java.util.concurrent.TimeUnit;
131import java.util.concurrent.atomic.AtomicBoolean;
132import java.util.concurrent.atomic.AtomicInteger;
133import java.util.function.Consumer;
134import java.util.regex.Matcher;
135import javax.net.ssl.KeyManager;
136import javax.net.ssl.SSLContext;
137import javax.net.ssl.SSLPeerUnverifiedException;
138import javax.net.ssl.SSLSocket;
139import javax.net.ssl.SSLSocketFactory;
140import javax.net.ssl.X509KeyManager;
141import javax.net.ssl.X509TrustManager;
142import okhttp3.HttpUrl;
143import org.xmlpull.v1.XmlPullParserException;
144
145public class XmppConnection implements Runnable {
146
147 protected final Account account;
148 private final Features features = new Features(this);
149 private final HashMap<Jid, ServiceDiscoveryResult> disco = new HashMap<>();
150 private final HashMap<String, Jid> commands = new HashMap<>();
151 private final SparseArray<Stanza> mStanzaQueue = new SparseArray<>();
152 private final Hashtable<String, Pair<Iq, Consumer<Iq>>> packetCallbacks = new Hashtable<>();
153 private final Set<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners =
154 new HashSet<>();
155 private final AppSettings appSettings;
156 private final XmppConnectionService mXmppConnectionService;
157 private Socket socket;
158 private XmlReader tagReader;
159 private TagWriter tagWriter = new TagWriter();
160 private boolean shouldAuthenticate = true;
161 private boolean inSmacksSession = false;
162 private boolean quickStartInProgress = false;
163 private boolean isBound = false;
164 private boolean offlineMessagesRetrieved = false;
165 private im.conversations.android.xmpp.model.streams.Features streamFeatures;
166 private im.conversations.android.xmpp.model.streams.Features boundStreamFeatures;
167 private StreamId streamId = null;
168 private int stanzasReceived = 0;
169 private int stanzasSent = 0;
170 private int stanzasSentBeforeAuthentication;
171 private long lastPacketReceived = 0;
172 private long lastPingSent = 0;
173 private long lastConnectionStarted = 0;
174 private long lastSessionStarted = 0;
175 private long lastDiscoStarted = 0;
176 private boolean isMamPreferenceAlways = false;
177 private final AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
178 private final AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
179 private final AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
180 private final AtomicInteger mSmCatchupMessageCounter = new AtomicInteger(0);
181 private boolean mInteractive = false;
182 private int attempt = 0;
183 private OnJinglePacketReceived jingleListener = null;
184
185 private final Consumer<Presence> presenceListener;
186 private final Consumer<Iq> unregisteredIqListener;
187 private final Consumer<im.conversations.android.xmpp.model.stanza.Message> messageListener;
188 private OnStatusChanged statusListener = null;
189 private final Runnable bindListener;
190 private OnMessageAcknowledged acknowledgedListener = null;
191 private final PendingItem<String> pendingResumeId = new PendingItem<>();
192 private LoginInfo loginInfo;
193 private HashedToken.Mechanism hashTokenRequest;
194 private HttpUrl redirectionUrl = null;
195 private String verifiedHostname = null;
196 private Resolver.Result currentResolverResult;
197 private Resolver.Result seeOtherHostResolverResult;
198 private volatile Thread mThread;
199 private CountDownLatch mStreamCountDownLatch;
200
201 public XmppConnection(final Account account, final XmppConnectionService service) {
202 this.account = account;
203 this.mXmppConnectionService = service;
204 this.appSettings = mXmppConnectionService.getAppSettings();
205 this.presenceListener = new PresenceParser(service, account);
206 this.unregisteredIqListener = new IqParser(service, account);
207 this.messageListener = new MessageParser(service, account);
208 this.bindListener = new BindProcessor(service, account);
209 }
210
211 private static void fixResource(final Context context, final Account account) {
212 String resource = account.getResource();
213 int fixedPartLength =
214 context.getString(R.string.app_name).length() + 1; // include the trailing dot
215 int randomPartLength = 4; // 3 bytes
216 if (resource != null && resource.length() > fixedPartLength + randomPartLength) {
217 if (validBase64(
218 resource.substring(fixedPartLength, fixedPartLength + randomPartLength))) {
219 account.setResource(resource.substring(0, fixedPartLength + randomPartLength));
220 }
221 }
222 }
223
224 private static boolean validBase64(final String input) {
225 try {
226 return Base64.decode(input, Base64.URL_SAFE).length == 3;
227 } catch (final Throwable throwable) {
228 return false;
229 }
230 }
231
232 private void changeStatus(final Account.State nextStatus) {
233 synchronized (this) {
234 if (Thread.currentThread().isInterrupted()) {
235 Log.d(
236 Config.LOGTAG,
237 account.getJid().asBareJid()
238 + ": not changing status to "
239 + nextStatus
240 + " because thread was interrupted");
241 return;
242 }
243 if (account.getStatus() != nextStatus) {
244 if (nextStatus == Account.State.OFFLINE
245 && account.getStatus() != Account.State.CONNECTING
246 && account.getStatus() != Account.State.ONLINE
247 && account.getStatus() != Account.State.DISABLED
248 && account.getStatus() != Account.State.LOGGED_OUT) {
249 return;
250 }
251 if (nextStatus == Account.State.ONLINE) {
252 this.attempt = 0;
253 }
254 account.setStatus(nextStatus);
255 } else {
256 return;
257 }
258 }
259 if (statusListener != null) {
260 statusListener.onStatusChanged(account);
261 }
262 }
263
264 public Jid getJidForCommand(final String node) {
265 synchronized (this.commands) {
266 return this.commands.get(node);
267 }
268 }
269
270 public void prepareNewConnection() {
271 this.lastConnectionStarted = SystemClock.elapsedRealtime();
272 this.lastPingSent = SystemClock.elapsedRealtime();
273 this.lastDiscoStarted = Long.MAX_VALUE;
274 this.mWaitingForSmCatchup.set(false);
275 this.changeStatus(Account.State.CONNECTING);
276 }
277
278 public boolean isWaitingForSmCatchup() {
279 return mWaitingForSmCatchup.get();
280 }
281
282 public void incrementSmCatchupMessageCounter() {
283 this.mSmCatchupMessageCounter.incrementAndGet();
284 }
285
286 protected void connect() {
287 if (mXmppConnectionService.areMessagesInitialized()) {
288 mXmppConnectionService.resetSendingToWaiting(account);
289 }
290 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
291 this.pendingResumeId.clear();
292 this.loginInfo = null;
293 this.features.encryptionEnabled = false;
294 this.inSmacksSession = false;
295 this.quickStartInProgress = false;
296 this.isBound = false;
297 this.attempt++;
298 this.currentResolverResult = null;
299 // will be set if user entered hostname is being used or hostname was verified with dnssec
300 this.verifiedHostname = null;
301 try {
302 Socket localSocket;
303 shouldAuthenticate = !account.isOptionSet(Account.OPTION_REGISTER);
304 this.changeStatus(Account.State.CONNECTING);
305 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
306 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
307 // TODO collapse Tor usage into normal connection code path
308 if (useTor) {
309 final var seeOtherHost = this.seeOtherHostResolverResult;
310 final var hostname = account.getHostname().trim();
311 final var port = account.getPort();
312 final Resolver.Result resume = streamId == null ? null : streamId.location;
313 final Resolver.Result viaTor;
314 if (resume != null) {
315 viaTor = resume;
316 } else if (seeOtherHost != null) {
317 viaTor = seeOtherHost;
318 } else if (hostname.isEmpty() || port < 0) {
319 viaTor =
320 Iterables.getOnlyElement(
321 Resolver.fromHardCoded(
322 account.getServer(), Resolver.XMPP_PORT_STARTTLS));
323 } else {
324 viaTor = Iterables.getOnlyElement(Resolver.fromHardCoded(hostname, port));
325 this.verifiedHostname = hostname;
326 }
327
328 Log.d(Config.LOGTAG, account.getJid().asBareJid() + " via Tor: " + viaTor);
329
330 localSocket =
331 SocksSocketFactory.createSocketOverTor(
332 viaTor.asDestination(), viaTor.getPort());
333
334 if (viaTor.isDirectTls()) {
335 localSocket = upgradeSocketToTls(localSocket);
336 features.encryptionEnabled = true;
337 }
338
339 try {
340 if (startXmpp(localSocket)) {
341 this.currentResolverResult = viaTor;
342 this.seeOtherHostResolverResult = null;
343 }
344 } catch (final InterruptedException e) {
345 Log.d(
346 Config.LOGTAG,
347 account.getJid().asBareJid()
348 + ": thread was interrupted before beginning stream");
349 return;
350 } catch (final Exception e) {
351 throw new IOException("Could not start stream", e);
352 }
353 } else {
354 final var hostname = account.getHostname().trim();
355 final String domain = account.getServer();
356 final List<Resolver.Result> results = new ArrayList<>();
357 final boolean hardcoded = extended && !hostname.isEmpty();
358 if (hardcoded) {
359 results.addAll(Resolver.fromHardCoded(hostname, account.getPort()));
360 } else {
361 results.addAll(Resolver.resolve(domain));
362 }
363 if (Thread.currentThread().isInterrupted()) {
364 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
365 return;
366 }
367 if (results.isEmpty()) {
368 Log.e(
369 Config.LOGTAG,
370 account.getJid().asBareJid() + ": Resolver results were empty");
371 return;
372 }
373 final Resolver.Result storedBackupResult;
374 if (hardcoded) {
375 storedBackupResult = null;
376 } else {
377 storedBackupResult =
378 mXmppConnectionService.databaseBackend.findResolverResult(domain);
379 if (storedBackupResult != null && !results.contains(storedBackupResult)) {
380 results.add(storedBackupResult);
381 Log.d(
382 Config.LOGTAG,
383 account.getJid().asBareJid()
384 + ": loaded backup resolver result from db: "
385 + storedBackupResult);
386 }
387 }
388 final StreamId streamId = this.streamId;
389 final Resolver.Result resumeLocation = streamId == null ? null : streamId.location;
390 if (resumeLocation != null) {
391 Log.d(
392 Config.LOGTAG,
393 account.getJid().asBareJid()
394 + ": injected resume location on position 0");
395 results.add(0, resumeLocation);
396 }
397 final Resolver.Result seeOtherHost = this.seeOtherHostResolverResult;
398 if (seeOtherHost != null) {
399 Log.d(
400 Config.LOGTAG,
401 account.getJid().asBareJid()
402 + ": injected see-other-host on position 0");
403 results.add(0, seeOtherHost);
404 }
405 for (final Iterator<Resolver.Result> iterator = results.iterator();
406 iterator.hasNext(); ) {
407 final Resolver.Result result = iterator.next();
408 if (Thread.currentThread().isInterrupted()) {
409 Log.d(
410 Config.LOGTAG,
411 account.getJid().asBareJid() + ": Thread was interrupted");
412 return;
413 }
414 try {
415 // if tls is true, encryption is implied and must not be started
416 features.encryptionEnabled = result.isDirectTls();
417 verifiedHostname =
418 result.isAuthenticated() ? result.getHostname().toString() : null;
419 final InetSocketAddress addr;
420 if (result.getIp() != null) {
421 addr = new InetSocketAddress(result.getIp(), result.getPort());
422 Log.d(
423 Config.LOGTAG,
424 account.getJid().asBareJid().toString()
425 + ": using values from resolver "
426 + (result.getHostname() == null
427 ? ""
428 : result.getHostname().toString() + "/")
429 + result.getIp().getHostAddress()
430 + ":"
431 + result.getPort()
432 + " tls: "
433 + features.encryptionEnabled);
434 } else {
435 addr =
436 new InetSocketAddress(
437 IDN.toASCII(result.getHostname().toString()),
438 result.getPort());
439 Log.d(
440 Config.LOGTAG,
441 account.getJid().asBareJid().toString()
442 + ": using values from resolver "
443 + result.getHostname().toString()
444 + ":"
445 + result.getPort()
446 + " tls: "
447 + features.encryptionEnabled);
448 }
449
450 localSocket = new Socket();
451 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
452 localSocket.setSoTimeout(Config.SOCKET_TIMEOUT * 1000);
453 if (features.encryptionEnabled) {
454 localSocket = upgradeSocketToTls(localSocket);
455 }
456 if (startXmpp(localSocket)) {
457 // reset to 0; once the connection is established we don't want this
458 localSocket.setSoTimeout(0);
459 if (!hardcoded && !result.equals(storedBackupResult)) {
460 mXmppConnectionService.databaseBackend.saveResolverResult(
461 domain, result);
462 }
463 this.currentResolverResult = result;
464 this.seeOtherHostResolverResult = null;
465 break; // successfully connected to server that speaks xmpp
466 } else {
467 FileBackend.close(localSocket);
468 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
469 }
470 } catch (final StateChangingException e) {
471 if (!iterator.hasNext()) {
472 throw e;
473 }
474 } catch (InterruptedException e) {
475 Log.d(
476 Config.LOGTAG,
477 account.getJid().asBareJid()
478 + ": thread was interrupted before beginning stream");
479 return;
480 } catch (final Throwable e) {
481 Log.d(
482 Config.LOGTAG,
483 account.getJid().asBareJid().toString()
484 + ": "
485 + e.getMessage()
486 + "("
487 + e.getClass().getName()
488 + ")");
489 if (!iterator.hasNext()) {
490 throw new UnknownHostException();
491 }
492 }
493 }
494 }
495 processStream();
496 } catch (final SecurityException e) {
497 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
498 } catch (final StateChangingException e) {
499 this.changeStatus(e.state);
500 } catch (final UnknownHostException
501 | ConnectException
502 | SocksSocketFactory.HostNotFoundException e) {
503 this.changeStatus(Account.State.SERVER_NOT_FOUND);
504 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
505 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
506 } catch (final IOException | XmlPullParserException e) {
507 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
508 this.changeStatus(Account.State.OFFLINE);
509 this.attempt = Math.max(0, this.attempt - 1);
510 } finally {
511 if (!Thread.currentThread().isInterrupted()) {
512 forceCloseSocket();
513 } else {
514 Log.d(
515 Config.LOGTAG,
516 account.getJid().asBareJid()
517 + ": not force closing socket because thread was interrupted");
518 }
519 }
520 }
521
522 /**
523 * Starts xmpp protocol, call after connecting to socket
524 *
525 * @return true if server returns with valid xmpp, false otherwise
526 */
527 private boolean startXmpp(final Socket socket) throws Exception {
528 if (Thread.currentThread().isInterrupted()) {
529 throw new InterruptedException();
530 }
531 // this means we have at least found a socket to connect to. give the connection another 90s
532 this.lastConnectionStarted = SystemClock.elapsedRealtime();
533 this.socket = socket;
534 this.tagReader = new XmlReader();
535 if (tagWriter != null) {
536 tagWriter.forceClose();
537 }
538 this.tagWriter = new TagWriter();
539 this.tagWriter.setOutputStream(socket.getOutputStream());
540 this.tagReader.setInputStream(socket.getInputStream());
541 this.tagWriter.beginDocument();
542 final boolean quickStart;
543 if (socket instanceof SSLSocket sslSocket) {
544 SSLSockets.log(account, sslSocket);
545 quickStart = establishStream(SSLSockets.version(sslSocket));
546 } else {
547 quickStart = establishStream(SSLSockets.Version.NONE);
548 }
549 final Tag tag = tagReader.readTag();
550 if (Thread.currentThread().isInterrupted()) {
551 throw new InterruptedException();
552 }
553 if (tag == null) {
554 return false;
555 }
556 final boolean success = tag.isStart("stream", Namespace.STREAMS);
557 if (success) {
558 final var from = tag.getAttribute("from");
559 if (from == null || !from.equals(account.getServer())) {
560 throw new StateChangingException(Account.State.HOST_UNKNOWN);
561 }
562 }
563 if (success && quickStart) {
564 this.quickStartInProgress = true;
565 }
566 return success;
567 }
568
569 private SSLSocketFactory getSSLSocketFactory()
570 throws NoSuchAlgorithmException, KeyManagementException {
571 final SSLContext sc = SSLSockets.getSSLContext();
572 final MemorizingTrustManager trustManager =
573 this.mXmppConnectionService.getMemorizingTrustManager();
574 final KeyManager[] keyManager;
575 if (account.getPrivateKeyAlias() != null) {
576 keyManager = new KeyManager[] {new MyKeyManager()};
577 } else {
578 keyManager = null;
579 }
580 final String domain = account.getServer();
581 sc.init(
582 keyManager,
583 new X509TrustManager[] {
584 mInteractive
585 ? trustManager.getInteractive(domain)
586 : trustManager.getNonInteractive(domain)
587 },
588 SECURE_RANDOM);
589 return sc.getSocketFactory();
590 }
591
592 @Override
593 public void run() {
594 synchronized (this) {
595 this.mThread = Thread.currentThread();
596 if (this.mThread.isInterrupted()) {
597 Log.d(
598 Config.LOGTAG,
599 account.getJid().asBareJid()
600 + ": aborting connect because thread was interrupted");
601 return;
602 }
603 forceCloseSocket();
604 }
605 connect();
606 }
607
608 private void processStream() throws XmlPullParserException, IOException {
609 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
610 this.mStreamCountDownLatch = streamCountDownLatch;
611 Tag nextTag = tagReader.readTag();
612 while (nextTag != null && !nextTag.isEnd("stream")) {
613 if (nextTag.isStart("error", Namespace.STREAMS)) {
614 processStreamError(tagReader.readElement(nextTag, StreamError.class));
615 } else if (nextTag.isStart("features", Namespace.STREAMS)) {
616 processStreamFeatures(nextTag);
617 } else if (nextTag.isStart("proceed", Namespace.TLS)) {
618 switchOverToTls(nextTag);
619 } else if (nextTag.isStart("failure", Namespace.TLS)) {
620 throw new StateChangingException(Account.State.TLS_ERROR);
621 } else if (!isSecure()) {
622 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
623 } else if (account.isOptionSet(Account.OPTION_REGISTER)
624 && nextTag.isStart("iq", Namespace.JABBER_CLIENT)) {
625 processIq(nextTag);
626 } else if (this.loginInfo == null) {
627 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
628 } else if (nextTag.isStart("success", Namespace.SASL)) {
629 processSuccess(tagReader.readElement(nextTag, Success.class));
630 break;
631 } else if (nextTag.isStart("success", Namespace.SASL_2)) {
632 processSuccess(
633 tagReader.readElement(
634 nextTag, im.conversations.android.xmpp.model.sasl2.Success.class));
635 } else if (nextTag.isStart("failure", Namespace.SASL)) {
636 final var failure = tagReader.readElement(nextTag, Failure.class);
637 processFailure(failure);
638 } else if (nextTag.isStart("failure", Namespace.SASL_2)) {
639 final var failure =
640 tagReader.readElement(
641 nextTag, im.conversations.android.xmpp.model.sasl2.Failure.class);
642 processFailure(failure);
643 } else if (nextTag.isStart("continue", Namespace.SASL_2)) {
644 // two step sasl2 - we don’t support this yet
645 throw new StateChangingException(Account.State.INCOMPATIBLE_CLIENT);
646 } else if (nextTag.isStart("challenge")) {
647 final Element challenge = tagReader.readElement(nextTag);
648 processChallenge(challenge);
649 } else if (!LoginInfo.isSuccess(this.loginInfo)) {
650 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
651 } else if (this.streamId != null
652 && nextTag.isStart("resumed", Namespace.STREAM_MANAGEMENT)) {
653 final Resumed resumed = tagReader.readElement(nextTag, Resumed.class);
654 processResumed(resumed);
655 } else if (nextTag.isStart("failed", Namespace.STREAM_MANAGEMENT)) {
656 final Failed failed = tagReader.readElement(nextTag, Failed.class);
657 processFailed(failed, true);
658 } else if (nextTag.isStart("iq", Namespace.JABBER_CLIENT)) {
659 processIq(nextTag);
660 } else if (!isBound) {
661 Log.d(
662 Config.LOGTAG,
663 account.getJid().asBareJid()
664 + ": server sent unexpected"
665 + nextTag.identifier());
666 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
667 } else if (nextTag.isStart("message", Namespace.JABBER_CLIENT)) {
668 processMessage(nextTag);
669 } else if (nextTag.isStart("presence", Namespace.JABBER_CLIENT)) {
670 processPresence(nextTag);
671 } else if (nextTag.isStart("enabled", Namespace.STREAM_MANAGEMENT)) {
672 final var enabled = tagReader.readElement(nextTag, Enabled.class);
673 processEnabled(enabled);
674 } else if (nextTag.isStart("r", Namespace.STREAM_MANAGEMENT)) {
675 tagReader.readElement(nextTag);
676 if (Config.EXTENDED_SM_LOGGING) {
677 Log.d(
678 Config.LOGTAG,
679 account.getJid().asBareJid()
680 + ": acknowledging stanza #"
681 + this.stanzasReceived);
682 }
683 final Ack ack = new Ack(this.stanzasReceived);
684 tagWriter.writeStanzaAsync(ack);
685 } else if (nextTag.isStart("a", Namespace.STREAM_MANAGEMENT)) {
686 boolean accountUiNeedsRefresh = false;
687 synchronized (NotificationService.CATCHUP_LOCK) {
688 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
689 final int messageCount = mSmCatchupMessageCounter.get();
690 final int pendingIQs = packetCallbacks.size();
691 Log.d(
692 Config.LOGTAG,
693 account.getJid().asBareJid()
694 + ": SM catchup complete (messages="
695 + messageCount
696 + ", pending IQs="
697 + pendingIQs
698 + ")");
699 accountUiNeedsRefresh = true;
700 if (messageCount > 0) {
701 mXmppConnectionService
702 .getNotificationService()
703 .finishBacklog(true, account);
704 }
705 }
706 }
707 if (accountUiNeedsRefresh) {
708 mXmppConnectionService.updateAccountUi();
709 }
710 final var ack = tagReader.readElement(nextTag, Ack.class);
711 lastPacketReceived = SystemClock.elapsedRealtime();
712 final boolean acknowledgedMessages;
713 synchronized (this.mStanzaQueue) {
714 final Optional<Integer> serverSequence = ack.getHandled();
715 if (serverSequence.isPresent()) {
716 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence.get());
717 } else {
718 acknowledgedMessages = false;
719 Log.d(
720 Config.LOGTAG,
721 account.getJid().asBareJid()
722 + ": server send ack without sequence number");
723 }
724 }
725 if (acknowledgedMessages) {
726 mXmppConnectionService.updateConversationUi();
727 }
728 } else {
729 Log.e(
730 Config.LOGTAG,
731 account.getJid().asBareJid()
732 + ": Encountered unknown stream element"
733 + nextTag.identifier());
734 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
735 }
736 nextTag = tagReader.readTag();
737 }
738 if (nextTag != null && nextTag.isEnd("stream")) {
739 streamCountDownLatch.countDown();
740 }
741 }
742
743 private void processChallenge(final Element challenge) throws IOException {
744 final SaslMechanism.Version version;
745 try {
746 version = SaslMechanism.Version.of(challenge);
747 } catch (final IllegalArgumentException e) {
748 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
749 }
750 final StreamElement response;
751 if (version == SaslMechanism.Version.SASL) {
752 response = new Response();
753 } else if (version == SaslMechanism.Version.SASL_2) {
754 response = new im.conversations.android.xmpp.model.sasl2.Response();
755 } else {
756 throw new AssertionError("Missing implementation for " + version);
757 }
758 final LoginInfo currentLoginInfo = this.loginInfo;
759 if (currentLoginInfo == null || LoginInfo.isSuccess(currentLoginInfo)) {
760 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
761 }
762 try {
763 response.setContent(
764 currentLoginInfo.saslMechanism.getResponse(
765 challenge.getContent(), sslSocketOrNull(socket)));
766 } catch (final SaslMechanism.AuthenticationException e) {
767 // TODO: Send auth abort tag.
768 Log.e(Config.LOGTAG, e.toString());
769 throw new StateChangingException(Account.State.UNAUTHORIZED);
770 }
771 tagWriter.writeElement(response);
772 }
773
774 private void processSuccess(final StreamElement element)
775 throws IOException, XmlPullParserException {
776 final LoginInfo currentLoginInfo = this.loginInfo;
777 final SaslMechanism currentSaslMechanism = LoginInfo.mechanism(currentLoginInfo);
778 if (currentLoginInfo == null
779 || LoginInfo.isSuccess(currentLoginInfo)
780 || currentSaslMechanism == null) {
781 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
782 }
783 final SaslMechanism.Version version;
784 final String challenge;
785 if (element instanceof Success success) {
786 challenge = success.getContent();
787 version = SaslMechanism.Version.SASL;
788 } else if (element instanceof im.conversations.android.xmpp.model.sasl2.Success success) {
789 challenge = success.findChildContent("additional-data");
790 version = SaslMechanism.Version.SASL_2;
791 } else {
792 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
793 }
794 try {
795 currentLoginInfo.success(challenge, sslSocketOrNull(socket));
796 } catch (final SaslMechanism.AuthenticationException e) {
797 Log.e(Config.LOGTAG, account.getJid().asBareJid() + ": authentication failure ", e);
798 throw new StateChangingException(Account.State.UNAUTHORIZED);
799 }
800 Log.d(
801 Config.LOGTAG,
802 account.getJid().asBareJid().toString() + ": logged in (using " + version + ")");
803 if (SaslMechanism.pin(currentSaslMechanism)) {
804 account.setPinnedMechanism(currentSaslMechanism);
805 }
806 if (element instanceof im.conversations.android.xmpp.model.sasl2.Success success) {
807 final var authorizationJid = success.getAuthorizationIdentifier();
808 checkAssignedDomainOrThrow(authorizationJid);
809 Log.d(
810 Config.LOGTAG,
811 account.getJid().asBareJid()
812 + ": SASL 2.0 authorization identifier was "
813 + authorizationJid);
814 // TODO this should only happen when we used Bind 2
815 if (authorizationJid.isFullJid() && account.setJid(authorizationJid)) {
816 Log.d(
817 Config.LOGTAG,
818 account.getJid().asBareJid()
819 + ": jid changed during SASL 2.0. updating database");
820 }
821 final Bound bound = success.getExtension(Bound.class);
822 final Resumed resumed = success.getExtension(Resumed.class);
823 final Failed failed = success.getExtension(Failed.class);
824 final Element tokenWrapper = success.findChild("token", Namespace.FAST);
825 final String token = tokenWrapper == null ? null : tokenWrapper.getAttribute("token");
826 if (bound != null && resumed != null) {
827 Log.d(
828 Config.LOGTAG,
829 account.getJid().asBareJid()
830 + ": server sent bound and resumed in SASL2 success");
831 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
832 }
833 if (resumed != null && streamId != null) {
834 if (this.boundStreamFeatures != null) {
835 this.streamFeatures = this.boundStreamFeatures;
836 Log.d(
837 Config.LOGTAG,
838 "putting previous stream features back in place: "
839 + XmlHelper.printElementNames(this.boundStreamFeatures));
840 }
841 processResumed(resumed);
842 } else if (failed != null) {
843 processFailed(failed, false); // wait for new stream features
844 }
845 if (bound != null) {
846 clearIqCallbacks();
847 this.isBound = true;
848 processNopStreamFeatures();
849 this.boundStreamFeatures = this.streamFeatures;
850 final Enabled streamManagementEnabled = bound.getExtension(Enabled.class);
851 final Element carbonsEnabled = bound.findChild("enabled", Namespace.CARBONS);
852 final boolean waitForDisco;
853 if (streamManagementEnabled != null) {
854 resetOutboundStanzaQueue();
855 processEnabled(streamManagementEnabled);
856 waitForDisco = true;
857 } else {
858 // if we did not enable stream management in bind do it now
859 waitForDisco = enableStreamManagement();
860 }
861 final boolean negotiatedCarbons;
862 if (carbonsEnabled != null) {
863 negotiatedCarbons = true;
864 Log.d(
865 Config.LOGTAG,
866 account.getJid().asBareJid()
867 + ": successfully enabled carbons (via Bind 2.0)");
868 features.carbonsEnabled = true;
869 } else if (currentLoginInfo.inlineBindFeatures != null
870 && currentLoginInfo.inlineBindFeatures.contains(Namespace.CARBONS)) {
871 negotiatedCarbons = true;
872 Log.d(
873 Config.LOGTAG,
874 account.getJid().asBareJid()
875 + ": successfully enabled carbons (via Bind 2.0/implicit)");
876 features.carbonsEnabled = true;
877 } else {
878 negotiatedCarbons = false;
879 }
880 sendPostBindInitialization(waitForDisco, negotiatedCarbons);
881 }
882 final HashedToken.Mechanism tokenMechanism;
883 if (SaslMechanism.hashedToken(currentSaslMechanism)) {
884 tokenMechanism = ((HashedToken) currentSaslMechanism).getTokenMechanism();
885 } else if (this.hashTokenRequest != null) {
886 tokenMechanism = this.hashTokenRequest;
887 } else {
888 tokenMechanism = null;
889 }
890 if (tokenMechanism != null && !Strings.isNullOrEmpty(token)) {
891 if (ChannelBinding.priority(tokenMechanism.channelBinding)
892 >= ChannelBindingMechanism.getPriority(currentSaslMechanism)) {
893 this.account.setFastToken(tokenMechanism, token);
894 Log.d(
895 Config.LOGTAG,
896 account.getJid().asBareJid()
897 + ": storing hashed token "
898 + tokenMechanism);
899 } else {
900 Log.d(
901 Config.LOGTAG,
902 account.getJid().asBareJid()
903 + ": not accepting hashed token "
904 + tokenMechanism.name()
905 + " for log in mechanism "
906 + currentSaslMechanism.getMechanism());
907 this.account.resetFastToken();
908 }
909 } else if (this.hashTokenRequest != null) {
910 Log.w(
911 Config.LOGTAG,
912 account.getJid().asBareJid()
913 + ": no response to our hashed token request "
914 + this.hashTokenRequest);
915 }
916 }
917 mXmppConnectionService.databaseBackend.updateAccount(account);
918 this.quickStartInProgress = false;
919 if (version == SaslMechanism.Version.SASL) {
920 tagReader.reset();
921 sendStartStream(false, true);
922 final Tag tag = tagReader.readTag();
923 if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
924 processStream();
925 } else {
926 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
927 }
928 }
929 }
930
931 private void resetOutboundStanzaQueue() {
932 synchronized (this.mStanzaQueue) {
933 final ImmutableList.Builder<Stanza> intermediateStanzasBuilder =
934 new ImmutableList.Builder<>();
935 if (Config.EXTENDED_SM_LOGGING) {
936 Log.d(
937 Config.LOGTAG,
938 account.getJid().asBareJid()
939 + ": stanzas sent before auth: "
940 + this.stanzasSentBeforeAuthentication);
941 }
942 for (int i = this.stanzasSentBeforeAuthentication + 1; i <= this.stanzasSent; ++i) {
943 final Stanza stanza = this.mStanzaQueue.get(i);
944 if (stanza != null) {
945 intermediateStanzasBuilder.add(stanza);
946 }
947 }
948 this.mStanzaQueue.clear();
949 final var intermediateStanzas = intermediateStanzasBuilder.build();
950 for (int i = 0; i < intermediateStanzas.size(); ++i) {
951 this.mStanzaQueue.append(i + 1, intermediateStanzas.get(i));
952 }
953 this.stanzasSent = intermediateStanzas.size();
954 if (Config.EXTENDED_SM_LOGGING) {
955 Log.d(
956 Config.LOGTAG,
957 account.getJid().asBareJid()
958 + ": resetting outbound stanza queue to "
959 + this.stanzasSent);
960 }
961 }
962 }
963
964 private void processNopStreamFeatures() throws IOException {
965 final Tag tag = tagReader.readTag();
966 if (tag != null && tag.isStart("features", Namespace.STREAMS)) {
967 this.streamFeatures =
968 tagReader.readElement(
969 tag, im.conversations.android.xmpp.model.streams.Features.class);
970 Log.d(
971 Config.LOGTAG,
972 account.getJid().asBareJid()
973 + ": processed NOP stream features after success: "
974 + XmlHelper.printElementNames(this.streamFeatures));
975 } else {
976 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received " + tag);
977 Log.d(
978 Config.LOGTAG,
979 account.getJid().asBareJid()
980 + ": server did not send stream features after SASL2 success");
981 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
982 }
983 }
984
985 private void processFailure(final AuthenticationFailure failure) throws IOException {
986 final SaslMechanism.Version version;
987 try {
988 version = SaslMechanism.Version.of(failure);
989 } catch (final IllegalArgumentException e) {
990 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
991 }
992
993 final LoginInfo currentLoginInfo = this.loginInfo;
994 if (currentLoginInfo == null || LoginInfo.isSuccess(currentLoginInfo)) {
995 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
996 }
997
998 Log.d(Config.LOGTAG, failure.toString());
999 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": login failure " + version);
1000 if (SaslMechanism.hashedToken(LoginInfo.mechanism(currentLoginInfo))) {
1001 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resetting token");
1002 account.resetFastToken();
1003 mXmppConnectionService.databaseBackend.updateAccount(account);
1004 }
1005 final var errorCondition = failure.getErrorCondition();
1006 if (errorCondition instanceof SaslError.InvalidMechanism
1007 || errorCondition instanceof SaslError.MechanismTooWeak) {
1008 Log.d(
1009 Config.LOGTAG,
1010 account.getJid().asBareJid()
1011 + ": invalid or too weak mechanism. resetting quick start");
1012 if (account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false)) {
1013 mXmppConnectionService.databaseBackend.updateAccount(account);
1014 }
1015 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1016 } else if (errorCondition instanceof SaslError.TemporaryAuthFailure) {
1017 throw new StateChangingException(Account.State.TEMPORARY_AUTH_FAILURE);
1018 } else if (errorCondition instanceof SaslError.AccountDisabled) {
1019 final String text = failure.getText();
1020 if (Strings.isNullOrEmpty(text)) {
1021 throw new StateChangingException(Account.State.UNAUTHORIZED);
1022 }
1023 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
1024 if (matcher.find()) {
1025 final HttpUrl url;
1026 try {
1027 url = HttpUrl.get(text.substring(matcher.start(), matcher.end()));
1028 } catch (final IllegalArgumentException e) {
1029 throw new StateChangingException(Account.State.UNAUTHORIZED);
1030 }
1031 if (url.isHttps()) {
1032 this.redirectionUrl = url;
1033 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
1034 }
1035 }
1036 }
1037 if (SaslMechanism.hashedToken(LoginInfo.mechanism(currentLoginInfo))) {
1038 Log.d(
1039 Config.LOGTAG,
1040 account.getJid().asBareJid()
1041 + ": fast authentication failed. falling back to regular"
1042 + " authentication");
1043 authenticate();
1044 } else {
1045 throw new StateChangingException(Account.State.UNAUTHORIZED);
1046 }
1047 }
1048
1049 private static SSLSocket sslSocketOrNull(final Socket socket) {
1050 if (socket instanceof SSLSocket) {
1051 return (SSLSocket) socket;
1052 } else {
1053 return null;
1054 }
1055 }
1056
1057 private void processEnabled(final Enabled enabled) {
1058 final StreamId streamId = getStreamId(enabled);
1059 if (streamId == null) {
1060 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream management enabled");
1061 } else {
1062 Log.d(
1063 Config.LOGTAG,
1064 account.getJid().asBareJid()
1065 + ": stream management enabled. resume at: "
1066 + streamId.location);
1067 }
1068 this.streamId = streamId;
1069 this.stanzasReceived = 0;
1070 this.inSmacksSession = true;
1071 final var r = new Request();
1072 tagWriter.writeStanzaAsync(r);
1073 }
1074
1075 @Nullable
1076 private StreamId getStreamId(final Enabled enabled) {
1077 final Optional<String> id = enabled.getResumeId();
1078 final String locationAttribute = enabled.getLocation();
1079 final Resolver.Result currentResolverResult = this.currentResolverResult;
1080 final Resolver.Result location;
1081 if (Strings.isNullOrEmpty(locationAttribute) || currentResolverResult == null) {
1082 location = null;
1083 } else {
1084 location = currentResolverResult.seeOtherHost(locationAttribute);
1085 }
1086 return id.isPresent() ? new StreamId(id.get(), location) : null;
1087 }
1088
1089 private void processResumed(final Resumed resumed) throws StateChangingException {
1090 final var pendingResumeId = this.pendingResumeId.pop();
1091 final var prevId = resumed.getPrevId();
1092 if (prevId == null || !prevId.equals(pendingResumeId)) {
1093 Log.d(
1094 Config.LOGTAG,
1095 account.getJid().asBareJid()
1096 + ": server tried resume with unknown id "
1097 + prevId);
1098 resetStreamId();
1099 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1100 }
1101 this.inSmacksSession = true;
1102 this.isBound = true;
1103 this.tagWriter.writeStanzaAsync(new Request());
1104 lastPacketReceived = SystemClock.elapsedRealtime();
1105 final Optional<Integer> h = resumed.getHandled();
1106 final int serverCount;
1107 if (h.isPresent()) {
1108 serverCount = h.get();
1109 } else {
1110 resetStreamId();
1111 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1112 }
1113 final ArrayList<Stanza> failedStanzas = new ArrayList<>();
1114 final boolean acknowledgedMessages;
1115 synchronized (this.mStanzaQueue) {
1116 if (serverCount < stanzasSent) {
1117 Log.d(
1118 Config.LOGTAG,
1119 account.getJid().asBareJid() + ": session resumed with lost packages");
1120 stanzasSent = serverCount;
1121 } else {
1122 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": session resumed");
1123 }
1124 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
1125 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
1126 failedStanzas.add(mStanzaQueue.valueAt(i));
1127 }
1128 mStanzaQueue.clear();
1129 }
1130 if (acknowledgedMessages) {
1131 mXmppConnectionService.updateConversationUi();
1132 }
1133 Log.d(
1134 Config.LOGTAG,
1135 account.getJid().asBareJid() + ": resending " + failedStanzas.size() + " stanzas");
1136 for (final Stanza packet : failedStanzas) {
1137 if (packet instanceof im.conversations.android.xmpp.model.stanza.Message message) {
1138 mXmppConnectionService.markMessage(
1139 account,
1140 message.getTo().asBareJid(),
1141 message.getId(),
1142 Message.STATUS_UNSEND);
1143 }
1144 sendPacket(packet);
1145 }
1146 if (mWaitForDisco.get()) {
1147 this.lastDiscoStarted = SystemClock.elapsedRealtime();
1148 Log.d(
1149 Config.LOGTAG,
1150 account.getJid().asBareJid() + ": awaiting disco results after resume");
1151 changeStatus(Account.State.CONNECTING);
1152 } else {
1153 changeStatusToOnline();
1154 }
1155 }
1156
1157 private void changeStatusToOnline() {
1158 Log.d(
1159 Config.LOGTAG,
1160 account.getJid().asBareJid() + ": online with resource " + account.getResource());
1161 changeStatus(Account.State.ONLINE);
1162 }
1163
1164 private void processFailed(final Failed failed, final boolean sendBindRequest) {
1165 final Optional<Integer> serverCount = failed.getHandled();
1166 if (serverCount.isPresent()) {
1167 Log.d(
1168 Config.LOGTAG,
1169 account.getJid().asBareJid()
1170 + ": resumption failed but server acknowledged stanza #"
1171 + serverCount.get());
1172 final boolean acknowledgedMessages;
1173 synchronized (this.mStanzaQueue) {
1174 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount.get());
1175 }
1176 if (acknowledgedMessages) {
1177 mXmppConnectionService.updateConversationUi();
1178 }
1179 } else {
1180 Log.d(
1181 Config.LOGTAG,
1182 account.getJid().asBareJid()
1183 + ": resumption failed ("
1184 + XmlHelper.print(failed.getChildren())
1185 + ")");
1186 }
1187 resetStreamId();
1188 if (sendBindRequest) {
1189 sendBindRequest();
1190 }
1191 }
1192
1193 private boolean acknowledgeStanzaUpTo(final int serverCount) {
1194 if (serverCount > stanzasSent) {
1195 Log.e(
1196 Config.LOGTAG,
1197 "server acknowledged more stanzas than we sent. serverCount="
1198 + serverCount
1199 + ", ourCount="
1200 + stanzasSent);
1201 }
1202 boolean acknowledgedMessages = false;
1203 for (int i = 0; i < mStanzaQueue.size(); ++i) {
1204 if (serverCount >= mStanzaQueue.keyAt(i)) {
1205 if (Config.EXTENDED_SM_LOGGING) {
1206 Log.d(
1207 Config.LOGTAG,
1208 account.getJid().asBareJid()
1209 + ": server acknowledged stanza #"
1210 + mStanzaQueue.keyAt(i));
1211 }
1212 final Stanza stanza = mStanzaQueue.valueAt(i);
1213 if (stanza instanceof im.conversations.android.xmpp.model.stanza.Message packet
1214 && acknowledgedListener != null) {
1215 final String id = packet.getId();
1216 final Jid to = packet.getTo();
1217 if (id != null && to != null) {
1218 acknowledgedMessages |=
1219 acknowledgedListener.onMessageAcknowledged(account, to, id);
1220 }
1221 }
1222 mStanzaQueue.removeAt(i);
1223 i--;
1224 }
1225 }
1226 return acknowledgedMessages;
1227 }
1228
1229 private <S extends Stanza> @NonNull S processPacket(final Tag currentTag, final Class<S> clazz)
1230 throws IOException {
1231 final S stanza = tagReader.readElement(currentTag, clazz);
1232 if (stanzasReceived == Integer.MAX_VALUE) {
1233 resetStreamId();
1234 throw new IOException("time to restart the session. cant handle >2 billion pcks");
1235 }
1236 if (inSmacksSession) {
1237 ++stanzasReceived;
1238 } else if (features.sm()) {
1239 Log.d(
1240 Config.LOGTAG,
1241 account.getJid().asBareJid()
1242 + ": not counting stanza("
1243 + stanza.getClass().getSimpleName()
1244 + "). Not in smacks session.");
1245 }
1246 lastPacketReceived = SystemClock.elapsedRealtime();
1247 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
1248 Log.d(Config.LOGTAG, "[background stanza] " + stanza);
1249 }
1250 return stanza;
1251 }
1252
1253 private void processIq(final Tag currentTag) throws IOException {
1254 final Iq packet = processPacket(currentTag, Iq.class);
1255 if (packet.isInvalid()) {
1256 Log.e(
1257 Config.LOGTAG,
1258 "encountered invalid iq from='"
1259 + packet.getFrom()
1260 + "' to='"
1261 + packet.getTo()
1262 + "'");
1263 return;
1264 }
1265 if (Thread.currentThread().isInterrupted()) {
1266 Log.d(
1267 Config.LOGTAG,
1268 account.getJid().asBareJid() + "Not processing iq. Thread was interrupted");
1269 return;
1270 }
1271 if (packet.hasExtension(Jingle.class) && packet.getType() == Iq.Type.SET && isBound) {
1272 if (this.jingleListener != null) {
1273 this.jingleListener.onJinglePacketReceived(account, packet);
1274 }
1275 } else {
1276 final var callback = getIqPacketReceivedCallback(packet);
1277 if (callback == null) {
1278 Log.d(
1279 Config.LOGTAG,
1280 account.getJid().asBareJid().toString()
1281 + ": no callback registered for IQ from "
1282 + packet.getFrom());
1283 return;
1284 }
1285 try {
1286 callback.accept(packet);
1287 } catch (final StateChangingError error) {
1288 throw new StateChangingException(error.state);
1289 }
1290 }
1291 }
1292
1293 private Consumer<Iq> getIqPacketReceivedCallback(final Iq stanza)
1294 throws StateChangingException {
1295 final boolean isRequest =
1296 stanza.getType() == Iq.Type.GET || stanza.getType() == Iq.Type.SET;
1297 if (isRequest) {
1298 if (isBound) {
1299 return this.unregisteredIqListener;
1300 } else {
1301 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1302 }
1303 } else {
1304 synchronized (this.packetCallbacks) {
1305 final var pair = packetCallbacks.get(stanza.getId());
1306 if (pair == null) {
1307 return null;
1308 }
1309 if (pair.first.toServer(account)) {
1310 if (stanza.fromServer(account)) {
1311 packetCallbacks.remove(stanza.getId());
1312 return pair.second;
1313 } else {
1314 Log.e(
1315 Config.LOGTAG,
1316 account.getJid().asBareJid().toString()
1317 + ": ignoring spoofed iq packet");
1318 }
1319 } else {
1320 if (stanza.getFrom() != null && stanza.getFrom().equals(pair.first.getTo())) {
1321 packetCallbacks.remove(stanza.getId());
1322 return pair.second;
1323 } else {
1324 Log.e(
1325 Config.LOGTAG,
1326 account.getJid().asBareJid().toString()
1327 + ": ignoring spoofed iq packet");
1328 }
1329 }
1330 }
1331 }
1332 return null;
1333 }
1334
1335 private void processMessage(final Tag currentTag) throws IOException {
1336 final var packet =
1337 processPacket(currentTag, im.conversations.android.xmpp.model.stanza.Message.class);
1338 if (packet.isInvalid()) {
1339 Log.e(
1340 Config.LOGTAG,
1341 "encountered invalid message from='"
1342 + packet.getFrom()
1343 + "' to='"
1344 + packet.getTo()
1345 + "'");
1346 return;
1347 }
1348 if (Thread.currentThread().isInterrupted()) {
1349 Log.d(
1350 Config.LOGTAG,
1351 account.getJid().asBareJid()
1352 + "Not processing message. Thread was interrupted");
1353 return;
1354 }
1355 this.messageListener.accept(packet);
1356 }
1357
1358 private void processPresence(final Tag currentTag) throws IOException {
1359 final var packet = processPacket(currentTag, Presence.class);
1360 if (packet.isInvalid()) {
1361 Log.e(
1362 Config.LOGTAG,
1363 "encountered invalid presence from='"
1364 + packet.getFrom()
1365 + "' to='"
1366 + packet.getTo()
1367 + "'");
1368 return;
1369 }
1370 if (Thread.currentThread().isInterrupted()) {
1371 Log.d(
1372 Config.LOGTAG,
1373 account.getJid().asBareJid()
1374 + "Not processing presence. Thread was interrupted");
1375 return;
1376 }
1377 this.presenceListener.accept(packet);
1378 }
1379
1380 private void sendStartTLS() throws IOException {
1381 tagWriter.writeElement(new StartTls());
1382 }
1383
1384 private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
1385 tagReader.readElement(currentTag, Proceed.class);
1386 final Socket socket = this.socket;
1387 final SSLSocket sslSocket = upgradeSocketToTls(socket);
1388 this.socket = sslSocket;
1389 this.tagReader.setInputStream(sslSocket.getInputStream());
1390 this.tagWriter.setOutputStream(sslSocket.getOutputStream());
1391 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
1392 final boolean quickStart;
1393 try {
1394 quickStart = establishStream(SSLSockets.version(sslSocket));
1395 } catch (final InterruptedException e) {
1396 return;
1397 }
1398 if (quickStart) {
1399 this.quickStartInProgress = true;
1400 }
1401 features.encryptionEnabled = true;
1402 final Tag tag = tagReader.readTag();
1403 if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
1404 SSLSockets.log(account, sslSocket);
1405 processStream();
1406 } else {
1407 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
1408 }
1409 sslSocket.close();
1410 }
1411
1412 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
1413 final SSLSocketFactory sslSocketFactory;
1414 try {
1415 sslSocketFactory = getSSLSocketFactory();
1416 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
1417 throw new StateChangingException(Account.State.TLS_ERROR);
1418 }
1419 final InetAddress address = socket.getInetAddress();
1420 final SSLSocket sslSocket =
1421 (SSLSocket)
1422 sslSocketFactory.createSocket(
1423 socket, address.getHostAddress(), socket.getPort(), true);
1424 SSLSockets.setSecurity(sslSocket);
1425 SSLSockets.setHostname(sslSocket, IDN.toASCII(account.getServer()));
1426 SSLSockets.setApplicationProtocol(sslSocket, "xmpp-client");
1427 final XmppDomainVerifier xmppDomainVerifier = new XmppDomainVerifier();
1428 try {
1429 if (!xmppDomainVerifier.verify(
1430 account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
1431 Log.d(
1432 Config.LOGTAG,
1433 account.getJid().asBareJid()
1434 + ": TLS certificate domain verification failed");
1435 FileBackend.close(sslSocket);
1436 throw new StateChangingException(Account.State.TLS_ERROR_DOMAIN);
1437 }
1438 } catch (final SSLPeerUnverifiedException e) {
1439 FileBackend.close(sslSocket);
1440 throw new StateChangingException(Account.State.TLS_ERROR);
1441 }
1442 return sslSocket;
1443 }
1444
1445 private void processStreamFeatures(final Tag currentTag) throws IOException {
1446 this.streamFeatures =
1447 tagReader.readElement(
1448 currentTag, im.conversations.android.xmpp.model.streams.Features.class);
1449 final boolean isSecure = isSecure();
1450 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
1451 if (this.quickStartInProgress) {
1452 if (this.streamFeatures.hasStreamFeature(Authentication.class)) {
1453 Log.d(
1454 Config.LOGTAG,
1455 account.getJid().asBareJid()
1456 + ": quick start in progress. ignoring features: "
1457 + XmlHelper.printElementNames(this.streamFeatures));
1458 if (SaslMechanism.hashedToken(LoginInfo.mechanism(this.loginInfo))) {
1459 return;
1460 }
1461 if (isFastTokenAvailable(this.streamFeatures.getExtension(Authentication.class))) {
1462 Log.d(
1463 Config.LOGTAG,
1464 account.getJid().asBareJid()
1465 + ": fast token available; resetting quick start");
1466 account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false);
1467 mXmppConnectionService.databaseBackend.updateAccount(account);
1468 }
1469 return;
1470 }
1471 Log.d(
1472 Config.LOGTAG,
1473 account.getJid().asBareJid()
1474 + ": server lost support for SASL 2. quick start not possible");
1475 this.account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false);
1476 mXmppConnectionService.databaseBackend.updateAccount(account);
1477 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1478 }
1479 if (this.streamFeatures.hasExtension(StartTls.class) && !features.encryptionEnabled) {
1480 sendStartTLS();
1481 } else if (this.streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1482 && account.isOptionSet(Account.OPTION_REGISTER)) {
1483 if (isSecure) {
1484 register();
1485 } else {
1486 Log.d(
1487 Config.LOGTAG,
1488 account.getJid().asBareJid()
1489 + ": unable to find STARTTLS for registration process "
1490 + XmlHelper.printElementNames(this.streamFeatures));
1491 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1492 }
1493 } else if (!this.streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1494 && account.isOptionSet(Account.OPTION_REGISTER)) {
1495 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
1496 } else if (this.streamFeatures.hasStreamFeature(Authentication.class)
1497 && shouldAuthenticate
1498 && isSecure) {
1499 authenticate(SaslMechanism.Version.SASL_2);
1500 } else if (this.streamFeatures.hasStreamFeature(Mechanisms.class)
1501 && shouldAuthenticate
1502 && isSecure) {
1503 authenticate(SaslMechanism.Version.SASL);
1504 } else if (this.streamFeatures.streamManagement()
1505 && isSecure
1506 && LoginInfo.isSuccess(loginInfo)
1507 && streamId != null
1508 && !inSmacksSession) {
1509 if (Config.EXTENDED_SM_LOGGING) {
1510 Log.d(
1511 Config.LOGTAG,
1512 account.getJid().asBareJid()
1513 + ": resuming after stanza #"
1514 + stanzasReceived);
1515 }
1516 final var streamId = this.streamId.id;
1517 final var resume = new Resume(streamId, stanzasReceived);
1518 prepareForResume(streamId);
1519 this.tagWriter.writeStanzaAsync(resume);
1520 } else if (needsBinding) {
1521 if (this.streamFeatures.hasChild("bind", Namespace.BIND)
1522 && isSecure
1523 && LoginInfo.isSuccess(loginInfo)) {
1524 sendBindRequest();
1525 } else {
1526 Log.d(
1527 Config.LOGTAG,
1528 account.getJid().asBareJid()
1529 + ": unable to find bind feature "
1530 + XmlHelper.printElementNames(this.streamFeatures));
1531 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1532 }
1533 } else {
1534 Log.d(
1535 Config.LOGTAG,
1536 account.getJid().asBareJid()
1537 + ": received NOP stream features: "
1538 + XmlHelper.printElementNames(this.streamFeatures));
1539 }
1540 }
1541
1542 private void authenticate() throws IOException {
1543 final boolean isSecure = isSecure();
1544 if (isSecure && this.streamFeatures.hasStreamFeature(Authentication.class)) {
1545 authenticate(SaslMechanism.Version.SASL_2);
1546 } else if (isSecure && this.streamFeatures.hasStreamFeature(Mechanisms.class)) {
1547 authenticate(SaslMechanism.Version.SASL);
1548 } else {
1549 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1550 }
1551 }
1552
1553 private boolean isSecure() {
1554 return features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
1555 }
1556
1557 private void authenticate(final SaslMechanism.Version version) throws IOException {
1558 final AuthenticationStreamFeature authElement;
1559 if (version == SaslMechanism.Version.SASL) {
1560 authElement = this.streamFeatures.getExtension(Mechanisms.class);
1561 } else {
1562 authElement = this.streamFeatures.getExtension(Authentication.class);
1563 }
1564 final Collection<String> mechanisms = authElement.getMechanismNames();
1565 final var cbExtension = this.streamFeatures.getExtension(SaslChannelBinding.class);
1566 final Collection<ChannelBinding> channelBindings = ChannelBinding.of(cbExtension);
1567 final SaslMechanism.Factory factory = new SaslMechanism.Factory(account);
1568 final SaslMechanism saslMechanism =
1569 factory.of(mechanisms, channelBindings, version, SSLSockets.version(this.socket));
1570 this.validate(saslMechanism, mechanisms);
1571 final DowngradeProtection downgradeProtection;
1572 if (cbExtension != null) {
1573 downgradeProtection =
1574 new DowngradeProtection(mechanisms, cbExtension.getChannelBindingTypes());
1575 } else {
1576 downgradeProtection = new DowngradeProtection(mechanisms);
1577 }
1578 if (saslMechanism instanceof ScramMechanism scramMechanism) {
1579 scramMechanism.setDowngradeProtection(downgradeProtection);
1580 }
1581 final boolean quickStartAvailable;
1582 final String firstMessage =
1583 saslMechanism.getClientFirstMessage(sslSocketOrNull(this.socket));
1584 final boolean usingFast = SaslMechanism.hashedToken(saslMechanism);
1585 final AuthenticationRequest authenticate;
1586 final LoginInfo loginInfo;
1587 if (version == SaslMechanism.Version.SASL) {
1588 authenticate = new Auth();
1589 if (!Strings.isNullOrEmpty(firstMessage)) {
1590 authenticate.setContent(firstMessage);
1591 }
1592 quickStartAvailable = false;
1593 loginInfo = new LoginInfo(saslMechanism, version, Collections.emptyList());
1594 } else if (version == SaslMechanism.Version.SASL_2) {
1595 final Authentication authentication = (Authentication) authElement;
1596 final var inline = authentication.getInline();
1597 final boolean sm = inline != null && inline.hasExtension(StreamManagement.class);
1598 final HashedToken.Mechanism hashTokenRequest;
1599 if (usingFast) {
1600 hashTokenRequest = null;
1601 } else if (inline != null) {
1602 hashTokenRequest =
1603 HashedToken.Mechanism.best(
1604 inline.getFastMechanisms(), SSLSockets.version(this.socket));
1605 // TODO warn or fail early if channel binding priority isn’t high enough compared to
1606 // login mechanism
1607 // ChannelBinding.priority(hashTokenRequest.channelBinding)
1608 // <
1609 // ChannelBindingMechanism.getPriority(saslMechanism)
1610 } else {
1611 hashTokenRequest = null;
1612 }
1613 final Collection<String> bindFeatures = Bind2.features(inline);
1614 quickStartAvailable =
1615 sm
1616 && bindFeatures != null
1617 && bindFeatures.containsAll(Bind2.QUICKSTART_FEATURES);
1618 if (bindFeatures != null) {
1619 try {
1620 mXmppConnectionService.restoredFromDatabaseLatch.await();
1621 } catch (final InterruptedException e) {
1622 Log.d(
1623 Config.LOGTAG,
1624 account.getJid().asBareJid()
1625 + ": interrupted while waiting for DB restore during SASL2"
1626 + " bind");
1627 return;
1628 }
1629 }
1630 loginInfo = new LoginInfo(saslMechanism, version, bindFeatures);
1631 this.hashTokenRequest = hashTokenRequest;
1632 authenticate =
1633 generateAuthenticationRequest(
1634 firstMessage, usingFast, hashTokenRequest, bindFeatures, sm);
1635 } else {
1636 throw new AssertionError("Missing implementation for " + version);
1637 }
1638 this.loginInfo = loginInfo;
1639 if (account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, quickStartAvailable)) {
1640 mXmppConnectionService.databaseBackend.updateAccount(account);
1641 }
1642
1643 Log.d(
1644 Config.LOGTAG,
1645 account.getJid().toString()
1646 + ": Authenticating with "
1647 + version
1648 + "/"
1649 + LoginInfo.mechanism(loginInfo).getMechanism());
1650 authenticate.setMechanism(LoginInfo.mechanism(loginInfo));
1651 synchronized (this.mStanzaQueue) {
1652 this.stanzasSentBeforeAuthentication = this.stanzasSent;
1653 tagWriter.writeElement(authenticate);
1654 }
1655 }
1656
1657 private static boolean isFastTokenAvailable(final Authentication authentication) {
1658 final var inline = authentication == null ? null : authentication.getInline();
1659 return inline != null && inline.hasExtension(Fast.class);
1660 }
1661
1662 private void validate(
1663 final @Nullable SaslMechanism saslMechanism, Collection<String> mechanisms)
1664 throws StateChangingException {
1665 if (saslMechanism == null) {
1666 Log.d(
1667 Config.LOGTAG,
1668 account.getJid().asBareJid()
1669 + ": unable to find supported SASL mechanism in "
1670 + mechanisms);
1671 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1672 }
1673 checkRequireChannelBinding(saslMechanism);
1674 if (SaslMechanism.hashedToken(saslMechanism)) {
1675 return;
1676 }
1677 final int pinnedMechanism = account.getPinnedMechanismPriority();
1678 if (pinnedMechanism > saslMechanism.getPriority()) {
1679 Log.e(
1680 Config.LOGTAG,
1681 "Auth failed. Authentication mechanism "
1682 + saslMechanism.getMechanism()
1683 + " has lower priority ("
1684 + saslMechanism.getPriority()
1685 + ") than pinned priority ("
1686 + pinnedMechanism
1687 + "). Possible downgrade attack?");
1688 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
1689 }
1690 }
1691
1692 private void checkRequireChannelBinding(@NonNull final SaslMechanism mechanism)
1693 throws StateChangingException {
1694 if (appSettings.isRequireChannelBinding()) {
1695 if (mechanism instanceof ChannelBindingMechanism) {
1696 return;
1697 }
1698 Log.d(Config.LOGTAG, account.getJid() + ": server did not offer channel binding");
1699 throw new StateChangingException(Account.State.CHANNEL_BINDING);
1700 }
1701 }
1702
1703 private void checkAssignedDomainOrThrow(final Jid jid) throws StateChangingException {
1704 if (jid == null) {
1705 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": bind response is missing jid");
1706 throw new StateChangingException(Account.State.BIND_FAILURE);
1707 }
1708 final var current = this.account.getJid().getDomain();
1709 if (jid.getDomain().equals(current)) {
1710 return;
1711 }
1712 Log.d(
1713 Config.LOGTAG,
1714 account.getJid().asBareJid()
1715 + ": server tried to re-assign domain to "
1716 + jid.getDomain());
1717 throw new StateChangingException(Account.State.BIND_FAILURE);
1718 }
1719
1720 private void checkAssignedDomain(final Jid jid) {
1721 try {
1722 checkAssignedDomainOrThrow(jid);
1723 } catch (final StateChangingException e) {
1724 throw new StateChangingError(e.state);
1725 }
1726 }
1727
1728 private AuthenticationRequest generateAuthenticationRequest(
1729 final String firstMessage, final boolean usingFast) {
1730 return generateAuthenticationRequest(
1731 firstMessage, usingFast, null, Bind2.QUICKSTART_FEATURES, true);
1732 }
1733
1734 private AuthenticationRequest generateAuthenticationRequest(
1735 final String firstMessage,
1736 final boolean usingFast,
1737 final HashedToken.Mechanism hashedTokenRequest,
1738 final Collection<String> bind,
1739 final boolean inlineStreamManagement) {
1740 final var authenticate = new Authenticate();
1741 if (!Strings.isNullOrEmpty(firstMessage)) {
1742 authenticate.addChild("initial-response").setContent(firstMessage);
1743 }
1744 final var userAgent =
1745 authenticate.addExtension(
1746 new UserAgent(
1747 AccountUtils.publicDeviceId(
1748 account, appSettings.getInstallationId())));
1749 userAgent.setSoftware(
1750 String.format("%s %s", BuildConfig.APP_NAME, BuildConfig.VERSION_NAME));
1751 if (!PhoneHelper.isEmulator()) {
1752 userAgent.setDevice(String.format("%s %s", Build.MANUFACTURER, Build.MODEL));
1753 }
1754 // do not include bind if 'inlineStreamManagement' is missing and we have a streamId
1755 // (because we would rather just do a normal SM/resume)
1756 final boolean mayAttemptBind = streamId == null || inlineStreamManagement;
1757 if (bind != null && mayAttemptBind) {
1758 authenticate.addChild(generateBindRequest(bind));
1759 }
1760 if (inlineStreamManagement && streamId != null) {
1761 final var streamId = this.streamId.id;
1762 final var resume = new Resume(streamId, stanzasReceived);
1763 prepareForResume(streamId);
1764 authenticate.addExtension(resume);
1765 }
1766 if (hashedTokenRequest != null) {
1767 authenticate.addExtension(new RequestToken(hashedTokenRequest));
1768 }
1769 if (usingFast) {
1770 authenticate.addExtension(new Fast());
1771 }
1772 return authenticate;
1773 }
1774
1775 private void prepareForResume(final String streamId) {
1776 this.mSmCatchupMessageCounter.set(0);
1777 this.mWaitingForSmCatchup.set(true);
1778 this.pendingResumeId.push(streamId);
1779 }
1780
1781 private Bind generateBindRequest(final Collection<String> bindFeatures) {
1782 Log.d(Config.LOGTAG, "inline bind features: " + bindFeatures);
1783 final var bind = new Bind();
1784 bind.setTag(BuildConfig.APP_NAME);
1785 if (bindFeatures.contains(Namespace.CARBONS)) {
1786 bind.addExtension(new im.conversations.android.xmpp.model.carbons.Enable());
1787 }
1788 if (bindFeatures.contains(Namespace.STREAM_MANAGEMENT)) {
1789 bind.addExtension(new Enable());
1790 }
1791 return bind;
1792 }
1793
1794 private void register() {
1795 final String preAuth = account.getKey(Account.KEY_PRE_AUTH_REGISTRATION_TOKEN);
1796 if (preAuth != null && features.invite()) {
1797 final Iq preAuthRequest = new Iq(Iq.Type.SET);
1798 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
1799 sendUnmodifiedIqPacket(
1800 preAuthRequest,
1801 (response) -> {
1802 if (response.getType() == Iq.Type.RESULT) {
1803 sendRegistryRequest();
1804 } else {
1805 final String error = response.getErrorCondition();
1806 Log.d(
1807 Config.LOGTAG,
1808 account.getJid().asBareJid()
1809 + ": failed to pre auth. "
1810 + error);
1811 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
1812 }
1813 },
1814 true);
1815 } else {
1816 sendRegistryRequest();
1817 }
1818 }
1819
1820 private void sendRegistryRequest() {
1821 final Iq register = new Iq(Iq.Type.GET);
1822 register.query(Namespace.REGISTER);
1823 register.setTo(account.getDomain());
1824 sendUnmodifiedIqPacket(
1825 register,
1826 (packet) -> {
1827 if (packet.getType() == Iq.Type.TIMEOUT) {
1828 return;
1829 }
1830 if (packet.getType() == Iq.Type.ERROR) {
1831 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1832 }
1833 final Element query = packet.query(Namespace.REGISTER);
1834 if (query.hasChild("username") && (query.hasChild("password"))) {
1835 final Iq register1 = new Iq(Iq.Type.SET);
1836 final Element username =
1837 new Element("username").setContent(account.getUsername());
1838 final Element password =
1839 new Element("password").setContent(account.getPassword());
1840 register1.query(Namespace.REGISTER).addChild(username);
1841 register1.query().addChild(password);
1842 register1.setFrom(account.getJid().asBareJid());
1843 sendUnmodifiedIqPacket(register1, this::processRegistrationResponse, true);
1844 } else if (query.hasChild("x", Namespace.DATA)) {
1845 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
1846 final Element blob = query.findChild("data", "urn:xmpp:bob");
1847 final String id = packet.getId();
1848 InputStream is;
1849 if (blob != null) {
1850 try {
1851 final String base64Blob = blob.getContent();
1852 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
1853 is = new ByteArrayInputStream(strBlob);
1854 } catch (Exception e) {
1855 is = null;
1856 }
1857 } else {
1858 final boolean useTor =
1859 mXmppConnectionService.useTorToConnect() || account.isOnion();
1860 try {
1861 final String url = data.getValue("url");
1862 final String fallbackUrl = data.getValue("captcha-fallback-url");
1863 if (url != null) {
1864 is = HttpConnectionManager.open(url, useTor);
1865 } else if (fallbackUrl != null) {
1866 is = HttpConnectionManager.open(fallbackUrl, useTor);
1867 } else {
1868 is = null;
1869 }
1870 } catch (final IOException e) {
1871 Log.d(
1872 Config.LOGTAG,
1873 account.getJid().asBareJid() + ": unable to fetch captcha",
1874 e);
1875 is = null;
1876 }
1877 }
1878
1879 if (is != null) {
1880 Bitmap captcha = BitmapFactory.decodeStream(is);
1881 try {
1882 if (mXmppConnectionService.displayCaptchaRequest(
1883 account, id, data, captcha)) {
1884 return;
1885 }
1886 } catch (Exception e) {
1887 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1888 }
1889 }
1890 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1891 } else if (query.hasChild("instructions")
1892 || query.hasChild("x", Namespace.OOB)) {
1893 final String instructions = query.findChildContent("instructions");
1894 final Element oob = query.findChild("x", Namespace.OOB);
1895 final String url = oob == null ? null : oob.findChildContent("url");
1896 if (url != null) {
1897 setAccountCreationFailed(url);
1898 } else if (instructions != null) {
1899 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
1900 if (matcher.find()) {
1901 setAccountCreationFailed(
1902 instructions.substring(matcher.start(), matcher.end()));
1903 }
1904 }
1905 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1906 }
1907 },
1908 true);
1909 }
1910
1911 public void sendCreateAccountWithCaptchaPacket(final String id, final Data data) {
1912 final Iq request = IqGenerator.generateCreateAccountWithCaptcha(account, id, data);
1913 this.sendUnmodifiedIqPacket(request, this::processRegistrationResponse, true);
1914 }
1915
1916 private void processRegistrationResponse(final Iq response) {
1917 if (response.getType() == Iq.Type.RESULT) {
1918 account.setOption(Account.OPTION_REGISTER, false);
1919 Log.d(
1920 Config.LOGTAG,
1921 account.getJid().asBareJid()
1922 + ": successfully registered new account on server");
1923 throw new StateChangingError(Account.State.REGISTRATION_SUCCESSFUL);
1924 } else {
1925 final Account.State state = getRegistrationFailedState(response);
1926 throw new StateChangingError(state);
1927 }
1928 }
1929
1930 @NonNull
1931 private static Account.State getRegistrationFailedState(final Iq response) {
1932 final List<String> PASSWORD_TOO_WEAK_MESSAGES =
1933 Arrays.asList("The password is too weak", "Please use a longer password.");
1934 final var error = response.getError();
1935 final var condition = error == null ? null : error.getCondition();
1936 final Account.State state;
1937 if (condition instanceof Condition.Conflict) {
1938 state = Account.State.REGISTRATION_CONFLICT;
1939 } else if (condition instanceof Condition.ResourceConstraint) {
1940 state = Account.State.REGISTRATION_PLEASE_WAIT;
1941 } else if (condition instanceof Condition.NotAcceptable
1942 && PASSWORD_TOO_WEAK_MESSAGES.contains(error.getTextAsString())) {
1943 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
1944 } else {
1945 state = Account.State.REGISTRATION_FAILED;
1946 }
1947 return state;
1948 }
1949
1950 private void setAccountCreationFailed(final String url) {
1951 final HttpUrl httpUrl = url == null ? null : HttpUrl.parse(url);
1952 if (httpUrl != null && httpUrl.isHttps()) {
1953 this.redirectionUrl = httpUrl;
1954 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1955 }
1956 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1957 }
1958
1959 public HttpUrl getRedirectionUrl() {
1960 return this.redirectionUrl;
1961 }
1962
1963 public void resetEverything() {
1964 resetAttemptCount(true);
1965 resetStreamId();
1966 clearIqCallbacks();
1967 synchronized (this.mStanzaQueue) {
1968 this.stanzasSent = 0;
1969 this.mStanzaQueue.clear();
1970 }
1971 this.redirectionUrl = null;
1972 synchronized (this.disco) {
1973 disco.clear();
1974 }
1975 synchronized (this.commands) {
1976 this.commands.clear();
1977 }
1978 this.loginInfo = null;
1979 }
1980
1981 private void sendBindRequest() {
1982 try {
1983 mXmppConnectionService.restoredFromDatabaseLatch.await();
1984 } catch (InterruptedException e) {
1985 Log.d(
1986 Config.LOGTAG,
1987 account.getJid().asBareJid()
1988 + ": interrupted while waiting for DB restore during bind");
1989 return;
1990 }
1991 clearIqCallbacks();
1992 if (account.getJid().isBareJid()) {
1993 account.setResource(createNewResource());
1994 } else {
1995 fixResource(mXmppConnectionService, account);
1996 }
1997 final Iq iq = new Iq(Iq.Type.SET);
1998 final String resource =
1999 Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND
2000 ? CryptoHelper.random(9)
2001 : account.getResource();
2002 iq.addExtension(new im.conversations.android.xmpp.model.bind.Bind()).setResource(resource);
2003 this.sendUnmodifiedIqPacket(
2004 iq,
2005 (packet) -> {
2006 if (packet.getType() == Iq.Type.TIMEOUT) {
2007 return;
2008 }
2009 final var bind =
2010 packet.getExtension(
2011 im.conversations.android.xmpp.model.bind.Bind.class);
2012 if (bind != null && packet.getType() == Iq.Type.RESULT) {
2013 isBound = true;
2014 final Jid assignedJid = bind.getJid();
2015 checkAssignedDomain(assignedJid);
2016 if (account.setJid(assignedJid)) {
2017 Log.d(
2018 Config.LOGTAG,
2019 account.getJid().asBareJid()
2020 + ": jid changed during bind. updating database");
2021 mXmppConnectionService.databaseBackend.updateAccount(account);
2022 }
2023 if (streamFeatures.hasChild("session")
2024 && !streamFeatures.findChild("session").hasChild("optional")) {
2025 sendStartSession();
2026 } else {
2027 final boolean waitForDisco = enableStreamManagement();
2028 sendPostBindInitialization(waitForDisco, false);
2029 }
2030 } else {
2031 Log.d(
2032 Config.LOGTAG,
2033 account.getJid()
2034 + ": disconnecting because of bind failure ("
2035 + packet);
2036 final var error = packet.getError();
2037 // TODO error.is(Condition)
2038 if (packet.getType() == Iq.Type.ERROR
2039 && error != null
2040 && error.hasChild("conflict")) {
2041 account.setResource(createNewResource());
2042 }
2043 throw new StateChangingError(Account.State.BIND_FAILURE);
2044 }
2045 },
2046 true);
2047 }
2048
2049 private void clearIqCallbacks() {
2050 final Iq failurePacket = new Iq(Iq.Type.TIMEOUT);
2051 final ArrayList<Consumer<Iq>> callbacks = new ArrayList<>();
2052 synchronized (this.packetCallbacks) {
2053 if (this.packetCallbacks.isEmpty()) {
2054 return;
2055 }
2056 Log.d(
2057 Config.LOGTAG,
2058 account.getJid().asBareJid()
2059 + ": clearing "
2060 + this.packetCallbacks.size()
2061 + " iq callbacks");
2062 final var iterator = this.packetCallbacks.values().iterator();
2063 while (iterator.hasNext()) {
2064 final var entry = iterator.next();
2065 callbacks.add(entry.second);
2066 iterator.remove();
2067 }
2068 }
2069 for (final var callback : callbacks) {
2070 try {
2071 callback.accept(failurePacket);
2072 } catch (StateChangingError error) {
2073 Log.d(
2074 Config.LOGTAG,
2075 account.getJid().asBareJid()
2076 + ": caught StateChangingError("
2077 + error.state.toString()
2078 + ") while clearing callbacks");
2079 // ignore
2080 }
2081 }
2082 Log.d(
2083 Config.LOGTAG,
2084 account.getJid().asBareJid()
2085 + ": done clearing iq callbacks. "
2086 + this.packetCallbacks.size()
2087 + " left");
2088 }
2089
2090 public void sendDiscoTimeout() {
2091 if (mWaitForDisco.compareAndSet(true, false)) {
2092 Log.d(
2093 Config.LOGTAG,
2094 account.getJid().asBareJid() + ": finalizing bind after disco timeout");
2095 finalizeBind();
2096 }
2097 }
2098
2099 private void sendStartSession() {
2100 Log.d(
2101 Config.LOGTAG,
2102 account.getJid().asBareJid() + ": sending legacy session to outdated server");
2103 final Iq startSession = new Iq(Iq.Type.SET);
2104 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
2105 this.sendUnmodifiedIqPacket(
2106 startSession,
2107 (packet) -> {
2108 if (packet.getType() == Iq.Type.RESULT) {
2109 final boolean waitForDisco = enableStreamManagement();
2110 sendPostBindInitialization(waitForDisco, false);
2111 } else if (packet.getType() != Iq.Type.TIMEOUT) {
2112 throw new StateChangingError(Account.State.SESSION_FAILURE);
2113 }
2114 },
2115 true);
2116 }
2117
2118 private boolean enableStreamManagement() {
2119 final boolean streamManagement = this.streamFeatures.streamManagement();
2120 if (streamManagement) {
2121 synchronized (this.mStanzaQueue) {
2122 final var enable = new Enable();
2123 tagWriter.writeStanzaAsync(enable);
2124 stanzasSent = 0;
2125 mStanzaQueue.clear();
2126 }
2127 return true;
2128 } else {
2129 return false;
2130 }
2131 }
2132
2133 private void sendPostBindInitialization(
2134 final boolean waitForDisco, final boolean carbonsEnabled) {
2135 features.carbonsEnabled = carbonsEnabled;
2136 features.blockListRequested = false;
2137 synchronized (this.disco) {
2138 this.disco.clear();
2139 }
2140 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
2141 mPendingServiceDiscoveries.set(0);
2142 mWaitForDisco.set(waitForDisco);
2143 this.lastDiscoStarted = SystemClock.elapsedRealtime();
2144 mXmppConnectionService.scheduleWakeUpCall(
2145 Config.CONNECT_DISCO_TIMEOUT * 1000L, account.getUuid().hashCode());
2146 final Element caps = streamFeatures.findChild("c");
2147 final String hash = caps == null ? null : caps.getAttribute("hash");
2148 final String ver = caps == null ? null : caps.getAttribute("ver");
2149 ServiceDiscoveryResult discoveryResult = null;
2150 if (hash != null && ver != null) {
2151 discoveryResult =
2152 mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
2153 }
2154 final boolean requestDiscoItemsFirst =
2155 !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
2156 if (requestDiscoItemsFirst) {
2157 sendServiceDiscoveryItems(account.getDomain());
2158 }
2159 if (discoveryResult == null) {
2160 sendServiceDiscoveryInfo(account.getDomain());
2161 } else {
2162 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
2163 disco.put(account.getDomain(), discoveryResult);
2164 }
2165 final var features = getFeatures();
2166 if (!features.bind2()) {
2167 discoverMamPreferences();
2168 }
2169 sendServiceDiscoveryInfo(account.getJid().asBareJid());
2170 if (!requestDiscoItemsFirst) {
2171 sendServiceDiscoveryItems(account.getDomain());
2172 }
2173
2174 if (!mWaitForDisco.get()) {
2175 finalizeBind();
2176 }
2177 this.lastSessionStarted = SystemClock.elapsedRealtime();
2178 }
2179
2180 private void sendServiceDiscoveryInfo(final Jid jid) {
2181 mPendingServiceDiscoveries.incrementAndGet();
2182 final Iq iq = new Iq(Iq.Type.GET);
2183 iq.setTo(jid);
2184 iq.query("http://jabber.org/protocol/disco#info");
2185 this.sendIqPacket(
2186 iq,
2187 (packet) -> {
2188 if (packet.getType() == Iq.Type.RESULT) {
2189 boolean advancedStreamFeaturesLoaded;
2190 synchronized (XmppConnection.this.disco) {
2191 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
2192 if (jid.equals(account.getDomain())) {
2193 mXmppConnectionService.databaseBackend.insertDiscoveryResult(
2194 result);
2195 }
2196 disco.put(jid, result);
2197 advancedStreamFeaturesLoaded =
2198 disco.containsKey(account.getDomain())
2199 && disco.containsKey(account.getJid().asBareJid());
2200 }
2201 if (advancedStreamFeaturesLoaded
2202 && (jid.equals(account.getDomain())
2203 || jid.equals(account.getJid().asBareJid()))) {
2204 enableAdvancedStreamFeatures();
2205 }
2206 } else if (packet.getType() == Iq.Type.ERROR) {
2207 Log.d(
2208 Config.LOGTAG,
2209 account.getJid().asBareJid()
2210 + ": could not query disco info for "
2211 + jid.toString());
2212 final boolean serverOrAccount =
2213 jid.equals(account.getDomain())
2214 || jid.equals(account.getJid().asBareJid());
2215 final boolean advancedStreamFeaturesLoaded;
2216 if (serverOrAccount) {
2217 synchronized (XmppConnection.this.disco) {
2218 disco.put(jid, ServiceDiscoveryResult.empty());
2219 advancedStreamFeaturesLoaded =
2220 disco.containsKey(account.getDomain())
2221 && disco.containsKey(account.getJid().asBareJid());
2222 }
2223 } else {
2224 advancedStreamFeaturesLoaded = false;
2225 }
2226 if (advancedStreamFeaturesLoaded) {
2227 enableAdvancedStreamFeatures();
2228 }
2229 }
2230 if (packet.getType() != Iq.Type.TIMEOUT) {
2231 if (mPendingServiceDiscoveries.decrementAndGet() == 0
2232 && mWaitForDisco.compareAndSet(true, false)) {
2233 finalizeBind();
2234 }
2235 }
2236 });
2237 }
2238
2239 private void discoverMamPreferences() {
2240 final Iq request = new Iq(Iq.Type.GET);
2241 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
2242 sendIqPacket(
2243 request,
2244 (response) -> {
2245 if (response.getType() == Iq.Type.RESULT) {
2246 Element prefs =
2247 response.findChild(
2248 "prefs", MessageArchiveService.Version.MAM_2.namespace);
2249 isMamPreferenceAlways =
2250 "always"
2251 .equals(
2252 prefs == null
2253 ? null
2254 : prefs.getAttribute("default"));
2255 }
2256 });
2257 }
2258
2259 private void discoverCommands() {
2260 final Iq request = new Iq(Iq.Type.GET);
2261 request.setTo(account.getDomain());
2262 request.addChild("query", Namespace.DISCO_ITEMS).setAttribute("node", Namespace.COMMANDS);
2263 sendIqPacket(
2264 request,
2265 (response) -> {
2266 if (response.getType() == Iq.Type.RESULT) {
2267 final Element query = response.findChild("query", Namespace.DISCO_ITEMS);
2268 if (query == null) {
2269 return;
2270 }
2271 final HashMap<String, Jid> commands = new HashMap<>();
2272 for (final Element child : query.getChildren()) {
2273 if ("item".equals(child.getName())) {
2274 final String node = child.getAttribute("node");
2275 final Jid jid = child.getAttributeAsJid("jid");
2276 if (node != null && jid != null) {
2277 commands.put(node, jid);
2278 }
2279 }
2280 }
2281 synchronized (this.commands) {
2282 this.commands.clear();
2283 this.commands.putAll(commands);
2284 }
2285 }
2286 });
2287 }
2288
2289 public boolean isMamPreferenceAlways() {
2290 return isMamPreferenceAlways;
2291 }
2292
2293 private void finalizeBind() {
2294 this.offlineMessagesRetrieved = false;
2295 this.bindListener.run();
2296 this.changeStatusToOnline();
2297 }
2298
2299 private void enableAdvancedStreamFeatures() {
2300 if (getFeatures().blocking() && !features.blockListRequested) {
2301 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
2302 this.sendIqPacket(getIqGenerator().generateGetBlockList(), unregisteredIqListener);
2303 }
2304 for (final OnAdvancedStreamFeaturesLoaded listener :
2305 advancedStreamFeaturesLoadedListeners) {
2306 listener.onAdvancedStreamFeaturesAvailable(account);
2307 }
2308 if (getFeatures().carbons() && !features.carbonsEnabled) {
2309 sendEnableCarbons();
2310 }
2311 if (getFeatures().commands()) {
2312 discoverCommands();
2313 }
2314 }
2315
2316 private void sendServiceDiscoveryItems(final Jid server) {
2317 mPendingServiceDiscoveries.incrementAndGet();
2318 final Iq iq = new Iq(Iq.Type.GET);
2319 iq.setTo(server.getDomain());
2320 iq.query("http://jabber.org/protocol/disco#items");
2321 this.sendIqPacket(
2322 iq,
2323 (packet) -> {
2324 if (packet.getType() == Iq.Type.RESULT) {
2325 final HashSet<Jid> items = new HashSet<>();
2326 final List<Element> elements = packet.query().getChildren();
2327 for (final Element element : elements) {
2328 if (element.getName().equals("item")) {
2329 final Jid jid =
2330 Jid.Invalid.getNullForInvalid(
2331 element.getAttributeAsJid("jid"));
2332 if (jid != null && !jid.equals(account.getDomain())) {
2333 items.add(jid);
2334 }
2335 }
2336 }
2337 for (Jid jid : items) {
2338 sendServiceDiscoveryInfo(jid);
2339 }
2340 } else {
2341 Log.d(
2342 Config.LOGTAG,
2343 account.getJid().asBareJid()
2344 + ": could not query disco items of "
2345 + server);
2346 }
2347 if (packet.getType() != Iq.Type.TIMEOUT) {
2348 if (mPendingServiceDiscoveries.decrementAndGet() == 0
2349 && mWaitForDisco.compareAndSet(true, false)) {
2350 finalizeBind();
2351 }
2352 }
2353 });
2354 }
2355
2356 private void sendEnableCarbons() {
2357 final Iq iq = new Iq(Iq.Type.SET);
2358 iq.addChild("enable", Namespace.CARBONS);
2359 this.sendIqPacket(
2360 iq,
2361 (packet) -> {
2362 if (packet.getType() == Iq.Type.RESULT) {
2363 Log.d(
2364 Config.LOGTAG,
2365 account.getJid().asBareJid() + ": successfully enabled carbons");
2366 features.carbonsEnabled = true;
2367 } else {
2368 Log.d(
2369 Config.LOGTAG,
2370 account.getJid().asBareJid()
2371 + ": could not enable carbons "
2372 + packet);
2373 }
2374 });
2375 }
2376
2377 private void processStreamError(final StreamError streamError) throws IOException {
2378 final var loginInfo = this.loginInfo;
2379 final var isSecureLoggedIn = isSecure() && LoginInfo.isSuccess(loginInfo);
2380 if (isSecureLoggedIn && streamError.hasChild("conflict")) {
2381 if (loginInfo.saslVersion == SaslMechanism.Version.SASL_2) {
2382 this.appSettings.resetInstallationId();
2383 }
2384 account.setResource(createNewResource());
2385 Log.d(
2386 Config.LOGTAG,
2387 account.getJid().asBareJid()
2388 + ": switching resource due to conflict ("
2389 + account.getResource()
2390 + ")");
2391 throw new IOException("Closed stream due to resource conflict");
2392 } else if (streamError.hasChild("host-unknown")) {
2393 throw new StateChangingException(Account.State.HOST_UNKNOWN);
2394 } else if (streamError.hasChild("policy-violation")) {
2395 this.lastConnectionStarted = SystemClock.elapsedRealtime();
2396 final String text = streamError.findChildContent("text");
2397 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": policy violation. " + text);
2398 if (isSecureLoggedIn) {
2399 failPendingMessages(text);
2400 }
2401 throw new StateChangingException(Account.State.POLICY_VIOLATION);
2402 } else if (streamError.hasChild("see-other-host")) {
2403 final String seeOtherHost = streamError.findChildContent("see-other-host");
2404 final Resolver.Result currentResolverResult = this.currentResolverResult;
2405 if (Strings.isNullOrEmpty(seeOtherHost) || currentResolverResult == null) {
2406 Log.d(
2407 Config.LOGTAG,
2408 account.getJid().asBareJid() + ": stream error " + streamError);
2409 throw new StateChangingException(Account.State.STREAM_ERROR);
2410 }
2411 Log.d(
2412 Config.LOGTAG,
2413 account.getJid().asBareJid()
2414 + ": see other host: "
2415 + seeOtherHost
2416 + " "
2417 + currentResolverResult);
2418 final Resolver.Result seeOtherResult = currentResolverResult.seeOtherHost(seeOtherHost);
2419 if (seeOtherResult != null) {
2420 this.seeOtherHostResolverResult = seeOtherResult;
2421 throw new StateChangingException(Account.State.SEE_OTHER_HOST);
2422 } else {
2423 throw new StateChangingException(Account.State.STREAM_ERROR);
2424 }
2425 } else {
2426 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError);
2427 throw new StateChangingException(Account.State.STREAM_ERROR);
2428 }
2429 }
2430
2431 private void failPendingMessages(final String error) {
2432 synchronized (this.mStanzaQueue) {
2433 for (int i = 0; i < mStanzaQueue.size(); ++i) {
2434 final Stanza stanza = mStanzaQueue.valueAt(i);
2435 if (stanza instanceof im.conversations.android.xmpp.model.stanza.Message packet) {
2436 final String id = packet.getId();
2437 final Jid to = packet.getTo();
2438 mXmppConnectionService.markMessage(
2439 account, to.asBareJid(), id, Message.STATUS_SEND_FAILED, error);
2440 }
2441 }
2442 }
2443 }
2444
2445 private boolean establishStream(final SSLSockets.Version sslVersion)
2446 throws IOException, InterruptedException {
2447 final boolean secureConnection = sslVersion != SSLSockets.Version.NONE;
2448 final SaslMechanism quickStartMechanism;
2449 if (secureConnection) {
2450 quickStartMechanism =
2451 SaslMechanism.ensureAvailable(
2452 account.getQuickStartMechanism(),
2453 sslVersion,
2454 appSettings.isRequireChannelBinding());
2455 } else {
2456 quickStartMechanism = null;
2457 }
2458 if (secureConnection
2459 && Config.QUICKSTART_ENABLED
2460 && quickStartMechanism != null
2461 && account.isOptionSet(Account.OPTION_QUICKSTART_AVAILABLE)) {
2462 mXmppConnectionService.restoredFromDatabaseLatch.await();
2463 this.loginInfo =
2464 new LoginInfo(
2465 quickStartMechanism,
2466 SaslMechanism.Version.SASL_2,
2467 Bind2.QUICKSTART_FEATURES);
2468 final boolean usingFast = quickStartMechanism instanceof HashedToken;
2469 final AuthenticationRequest authenticate =
2470 generateAuthenticationRequest(
2471 quickStartMechanism.getClientFirstMessage(sslSocketOrNull(this.socket)),
2472 usingFast);
2473 authenticate.setMechanism(quickStartMechanism);
2474 sendStartStream(true, false);
2475 synchronized (this.mStanzaQueue) {
2476 this.stanzasSentBeforeAuthentication = this.stanzasSent;
2477 tagWriter.writeElement(authenticate);
2478 }
2479 Log.d(
2480 Config.LOGTAG,
2481 account.getJid().toString()
2482 + ": quick start with "
2483 + quickStartMechanism.getMechanism());
2484 return true;
2485 } else {
2486 sendStartStream(secureConnection, true);
2487 return false;
2488 }
2489 }
2490
2491 private void sendStartStream(final boolean from, final boolean flush) throws IOException {
2492 final Tag stream = Tag.start("stream:stream");
2493 stream.setAttribute("to", account.getServer());
2494 if (from) {
2495 stream.setAttribute("from", account.getJid().asBareJid().toString());
2496 }
2497 stream.setAttribute("version", "1.0");
2498 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
2499 stream.setAttribute("xmlns", Namespace.JABBER_CLIENT);
2500 stream.setAttribute("xmlns:stream", Namespace.STREAMS);
2501 tagWriter.writeTag(stream, flush);
2502 }
2503
2504 private static String createNewResource() {
2505 return String.format("%s.%s", BuildConfig.APP_NAME, CryptoHelper.random(3));
2506 }
2507
2508 public String sendIqPacket(final Iq packet, final Consumer<Iq> callback) {
2509 packet.setFrom(account.getJid());
2510 return this.sendUnmodifiedIqPacket(packet, callback, false);
2511 }
2512
2513 public synchronized String sendUnmodifiedIqPacket(
2514 final Iq packet, final Consumer<Iq> callback, boolean force) {
2515 // TODO if callback != null verify that type is get or set
2516 if (packet.getId() == null) {
2517 packet.setId(CryptoHelper.random(9));
2518 }
2519 if (callback != null) {
2520 synchronized (this.packetCallbacks) {
2521 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
2522 }
2523 }
2524 this.sendPacket(packet, force);
2525 return packet.getId();
2526 }
2527
2528 public void sendMessagePacket(final im.conversations.android.xmpp.model.stanza.Message packet) {
2529 this.sendPacket(packet);
2530 }
2531
2532 public void sendPresencePacket(final Presence packet) {
2533 this.sendPacket(packet);
2534 }
2535
2536 private synchronized void sendPacket(final StreamElement packet) {
2537 sendPacket(packet, false);
2538 }
2539
2540 private synchronized void sendPacket(final StreamElement packet, final boolean force) {
2541 if (stanzasSent == Integer.MAX_VALUE) {
2542 resetStreamId();
2543 disconnect(true);
2544 return;
2545 }
2546 synchronized (this.mStanzaQueue) {
2547 if (force || isBound) {
2548 tagWriter.writeStanzaAsync(packet);
2549 } else {
2550 Log.d(
2551 Config.LOGTAG,
2552 account.getJid().asBareJid()
2553 + " do not write stanza to unbound stream "
2554 + packet.toString());
2555 }
2556 if (packet instanceof Stanza stanza) {
2557 if (this.mStanzaQueue.size() != 0) {
2558 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
2559 if (currentHighestKey != stanzasSent) {
2560 throw new AssertionError("Stanza count messed up");
2561 }
2562 }
2563
2564 ++stanzasSent;
2565 if (Config.EXTENDED_SM_LOGGING) {
2566 Log.d(
2567 Config.LOGTAG,
2568 account.getJid().asBareJid()
2569 + ": counting outbound "
2570 + packet.getName()
2571 + " as #"
2572 + stanzasSent);
2573 }
2574 this.mStanzaQueue.append(stanzasSent, stanza);
2575 if (stanza instanceof im.conversations.android.xmpp.model.stanza.Message
2576 && stanza.getId() != null
2577 && inSmacksSession) {
2578 if (Config.EXTENDED_SM_LOGGING) {
2579 Log.d(
2580 Config.LOGTAG,
2581 account.getJid().asBareJid()
2582 + ": requesting ack for message stanza #"
2583 + stanzasSent);
2584 }
2585 tagWriter.writeStanzaAsync(new Request());
2586 }
2587 }
2588 }
2589 }
2590
2591 public void sendPing() {
2592 if (!r()) {
2593 final Iq iq = new Iq(Iq.Type.GET);
2594 iq.setFrom(account.getJid());
2595 iq.addChild("ping", Namespace.PING);
2596 this.sendIqPacket(iq, null);
2597 }
2598 this.lastPingSent = SystemClock.elapsedRealtime();
2599 }
2600
2601 public void setOnJinglePacketReceivedListener(final OnJinglePacketReceived listener) {
2602 this.jingleListener = listener;
2603 }
2604
2605 public void setOnStatusChangedListener(final OnStatusChanged listener) {
2606 this.statusListener = listener;
2607 }
2608
2609 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
2610 this.acknowledgedListener = listener;
2611 }
2612
2613 public void addOnAdvancedStreamFeaturesAvailableListener(
2614 final OnAdvancedStreamFeaturesLoaded listener) {
2615 this.advancedStreamFeaturesLoadedListeners.add(listener);
2616 }
2617
2618 private void forceCloseSocket() {
2619 FileBackend.close(this.socket);
2620 FileBackend.close(this.tagReader);
2621 }
2622
2623 public void interrupt() {
2624 if (this.mThread != null) {
2625 this.mThread.interrupt();
2626 }
2627 }
2628
2629 public void disconnect(final boolean force) {
2630 interrupt();
2631 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
2632 if (force) {
2633 forceCloseSocket();
2634 } else {
2635 final TagWriter currentTagWriter = this.tagWriter;
2636 if (currentTagWriter.isActive()) {
2637 currentTagWriter.finish();
2638 final Socket currentSocket = this.socket;
2639 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
2640 try {
2641 currentTagWriter.await(1, TimeUnit.SECONDS);
2642 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
2643 currentTagWriter.writeTag(Tag.end("stream:stream"));
2644 if (streamCountDownLatch != null) {
2645 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
2646 Log.d(
2647 Config.LOGTAG,
2648 account.getJid().asBareJid() + ": remote ended stream");
2649 } else {
2650 Log.d(
2651 Config.LOGTAG,
2652 account.getJid().asBareJid()
2653 + ": remote has not closed socket. force closing");
2654 }
2655 }
2656 } catch (InterruptedException e) {
2657 Log.d(
2658 Config.LOGTAG,
2659 account.getJid().asBareJid()
2660 + ": interrupted while gracefully closing stream");
2661 } catch (final IOException e) {
2662 Log.d(
2663 Config.LOGTAG,
2664 account.getJid().asBareJid()
2665 + ": io exception during disconnect ("
2666 + e.getMessage()
2667 + ")");
2668 } finally {
2669 FileBackend.close(currentSocket);
2670 }
2671 } else {
2672 forceCloseSocket();
2673 }
2674 }
2675 }
2676
2677 private void resetStreamId() {
2678 this.pendingResumeId.clear();
2679 this.streamId = null;
2680 this.boundStreamFeatures = null;
2681 }
2682
2683 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
2684 synchronized (this.disco) {
2685 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
2686 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
2687 if (cursor.getValue().getFeatures().contains(feature)) {
2688 items.add(cursor);
2689 }
2690 }
2691 return items;
2692 }
2693 }
2694
2695 public Jid findDiscoItemByFeature(final String feature) {
2696 final var items = findDiscoItemsByFeature(feature);
2697 if (items.isEmpty()) {
2698 return null;
2699 }
2700 return Iterables.getFirst(items, null).getKey();
2701 }
2702
2703 public boolean r() {
2704 if (getFeatures().sm()) {
2705 this.tagWriter.writeStanzaAsync(new Request());
2706 return true;
2707 } else {
2708 return false;
2709 }
2710 }
2711
2712 public List<String> getMucServersWithholdAccount() {
2713 final List<String> servers = getMucServers();
2714 servers.remove(account.getDomain().toString());
2715 return servers;
2716 }
2717
2718 public List<String> getMucServers() {
2719 List<String> servers = new ArrayList<>();
2720 synchronized (this.disco) {
2721 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
2722 final ServiceDiscoveryResult value = cursor.getValue();
2723 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
2724 && value.hasIdentity("conference", "text")
2725 && !value.getFeatures().contains("jabber:iq:gateway")
2726 && !value.hasIdentity("conference", "irc")) {
2727 servers.add(cursor.getKey().toString());
2728 }
2729 }
2730 }
2731 return servers;
2732 }
2733
2734 public String getMucServer() {
2735 return Iterables.getFirst(getMucServers(), null);
2736 }
2737
2738 public int getTimeToNextAttempt(final boolean aggressive) {
2739 final int interval;
2740 if (aggressive) {
2741 interval = Math.min((int) (3 * Math.pow(1.3, attempt)), 60);
2742 } else {
2743 final int additionalTime =
2744 account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
2745 interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
2746 }
2747 final var connectionDuration = Ints.saturatedCast(getConnectionDuration() / 1000);
2748 return interval - connectionDuration;
2749 }
2750
2751 public int getAttempt() {
2752 return this.attempt;
2753 }
2754
2755 public Features getFeatures() {
2756 return this.features;
2757 }
2758
2759 public long getLastSessionEstablished() {
2760 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
2761 return System.currentTimeMillis() - diff;
2762 }
2763
2764 public long getConnectionDuration() {
2765 return SystemClock.elapsedRealtime() - this.lastConnectionStarted;
2766 }
2767
2768 public long getDiscoDuration() {
2769 return SystemClock.elapsedRealtime() - this.lastDiscoStarted;
2770 }
2771
2772 public long getLastPingSent() {
2773 return this.lastPingSent;
2774 }
2775
2776 public long getLastPacketReceived() {
2777 return this.lastPacketReceived;
2778 }
2779
2780 public void sendActive() {
2781 this.sendPacket(new Active());
2782 }
2783
2784 public void sendInactive() {
2785 this.sendPacket(new Inactive());
2786 }
2787
2788 public void resetAttemptCount(boolean resetConnectTime) {
2789 this.attempt = 0;
2790 if (resetConnectTime) {
2791 this.lastConnectionStarted = 0;
2792 }
2793 }
2794
2795 public void setInteractive(boolean interactive) {
2796 this.mInteractive = interactive;
2797 }
2798
2799 private IqGenerator getIqGenerator() {
2800 return mXmppConnectionService.getIqGenerator();
2801 }
2802
2803 public void trackOfflineMessageRetrieval(boolean trackOfflineMessageRetrieval) {
2804 if (trackOfflineMessageRetrieval) {
2805 final Iq iqPing = new Iq(Iq.Type.GET);
2806 iqPing.addChild("ping", Namespace.PING);
2807 this.sendIqPacket(
2808 iqPing,
2809 (response) -> {
2810 Log.d(
2811 Config.LOGTAG,
2812 account.getJid().asBareJid()
2813 + ": got ping response after sending initial presence");
2814 XmppConnection.this.offlineMessagesRetrieved = true;
2815 });
2816 } else {
2817 this.offlineMessagesRetrieved = true;
2818 }
2819 }
2820
2821 public boolean isOfflineMessagesRetrieved() {
2822 return this.offlineMessagesRetrieved;
2823 }
2824
2825 public void fetchRoster() {
2826 final Iq iqPacket = new Iq(Iq.Type.GET);
2827 final var version = account.getRosterVersion();
2828 if (Strings.isNullOrEmpty(account.getRosterVersion())) {
2829 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": fetching roster");
2830 } else {
2831 Log.d(
2832 Config.LOGTAG,
2833 account.getJid().asBareJid() + ": fetching roster version " + version);
2834 }
2835 iqPacket.query(Namespace.ROSTER).setAttribute("ver", version);
2836 sendIqPacket(iqPacket, unregisteredIqListener);
2837 }
2838
2839 public void triggerConnectionTimeout() {
2840 final var duration = getConnectionDuration();
2841 Log.d(
2842 Config.LOGTAG,
2843 account.getJid().asBareJid() + ": connection timeout after " + duration + "ms");
2844
2845 // last connection time gets reset so time to next attempt is calculated correctly
2846 this.lastConnectionStarted = SystemClock.elapsedRealtime();
2847
2848 // interrupt needs to be called before status change; otherwise we interrupt the newly
2849 // created thread
2850 this.interrupt();
2851 this.forceCloseSocket();
2852 this.changeStatus(Account.State.CONNECTION_TIMEOUT);
2853 }
2854
2855 private class MyKeyManager implements X509KeyManager {
2856 @Override
2857 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
2858 return account.getPrivateKeyAlias();
2859 }
2860
2861 @Override
2862 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
2863 return null;
2864 }
2865
2866 @Override
2867 public X509Certificate[] getCertificateChain(String alias) {
2868 Log.d(Config.LOGTAG, "getting certificate chain");
2869 try {
2870 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
2871 } catch (final Exception e) {
2872 Log.d(Config.LOGTAG, "could not get certificate chain", e);
2873 return new X509Certificate[0];
2874 }
2875 }
2876
2877 @Override
2878 public String[] getClientAliases(String s, Principal[] principals) {
2879 final String alias = account.getPrivateKeyAlias();
2880 return alias != null ? new String[] {alias} : new String[0];
2881 }
2882
2883 @Override
2884 public String[] getServerAliases(String s, Principal[] principals) {
2885 return new String[0];
2886 }
2887
2888 @Override
2889 public PrivateKey getPrivateKey(String alias) {
2890 try {
2891 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
2892 } catch (Exception e) {
2893 return null;
2894 }
2895 }
2896 }
2897
2898 private static class LoginInfo {
2899 public final SaslMechanism saslMechanism;
2900 public final SaslMechanism.Version saslVersion;
2901 public final List<String> inlineBindFeatures;
2902 public final AtomicBoolean success = new AtomicBoolean(false);
2903
2904 private LoginInfo(
2905 final SaslMechanism saslMechanism,
2906 final SaslMechanism.Version saslVersion,
2907 final Collection<String> inlineBindFeatures) {
2908 Preconditions.checkNotNull(saslMechanism, "SASL Mechanism must not be null");
2909 Preconditions.checkNotNull(saslVersion, "SASL version must not be null");
2910 this.saslMechanism = saslMechanism;
2911 this.saslVersion = saslVersion;
2912 this.inlineBindFeatures =
2913 inlineBindFeatures == null
2914 ? Collections.emptyList()
2915 : ImmutableList.copyOf(inlineBindFeatures);
2916 }
2917
2918 public static SaslMechanism mechanism(final LoginInfo loginInfo) {
2919 return loginInfo == null ? null : loginInfo.saslMechanism;
2920 }
2921
2922 public void success(final String challenge, final SSLSocket sslSocket)
2923 throws SaslMechanism.AuthenticationException {
2924 if (Thread.currentThread().isInterrupted()) {
2925 throw new SaslMechanism.AuthenticationException("Race condition during auth");
2926 }
2927 final var response = this.saslMechanism.getResponse(challenge, sslSocket);
2928 if (!Strings.isNullOrEmpty(response)) {
2929 throw new SaslMechanism.AuthenticationException(
2930 "processing success yielded another response");
2931 }
2932 if (this.success.compareAndSet(false, true)) {
2933 return;
2934 }
2935 throw new SaslMechanism.AuthenticationException("Process 'success' twice");
2936 }
2937
2938 public static boolean isSuccess(final LoginInfo loginInfo) {
2939 return loginInfo != null && loginInfo.success.get();
2940 }
2941 }
2942
2943 private static class StreamId {
2944 public final String id;
2945 public final Resolver.Result location;
2946
2947 private StreamId(String id, Resolver.Result location) {
2948 this.id = id;
2949 this.location = location;
2950 }
2951
2952 @NonNull
2953 @Override
2954 public String toString() {
2955 return MoreObjects.toStringHelper(this)
2956 .add("id", id)
2957 .add("location", location)
2958 .toString();
2959 }
2960 }
2961
2962 private static class StateChangingError extends Error {
2963 private final Account.State state;
2964
2965 public StateChangingError(Account.State state) {
2966 this.state = state;
2967 }
2968 }
2969
2970 private static class StateChangingException extends IOException {
2971 private final Account.State state;
2972
2973 public StateChangingException(Account.State state) {
2974 this.state = state;
2975 }
2976 }
2977
2978 public class Features {
2979 XmppConnection connection;
2980 private boolean carbonsEnabled = false;
2981 private boolean encryptionEnabled = false;
2982 private boolean blockListRequested = false;
2983
2984 public Features(final XmppConnection connection) {
2985 this.connection = connection;
2986 }
2987
2988 private boolean hasDiscoFeature(final Jid server, final String feature) {
2989 synchronized (XmppConnection.this.disco) {
2990 final ServiceDiscoveryResult sdr = connection.disco.get(server);
2991 return sdr != null && sdr.getFeatures().contains(feature);
2992 }
2993 }
2994
2995 public boolean carbons() {
2996 return hasDiscoFeature(account.getDomain(), Namespace.CARBONS);
2997 }
2998
2999 public boolean commands() {
3000 return hasDiscoFeature(account.getDomain(), Namespace.COMMANDS);
3001 }
3002
3003 public boolean easyOnboardingInvites() {
3004 synchronized (commands) {
3005 return commands.containsKey(Namespace.EASY_ONBOARDING_INVITE);
3006 }
3007 }
3008
3009 public boolean bookmarksConversion() {
3010 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION)
3011 && pepPublishOptions();
3012 }
3013
3014 public boolean blocking() {
3015 return hasDiscoFeature(account.getDomain(), Namespace.BLOCKING);
3016 }
3017
3018 public boolean spamReporting() {
3019 return hasDiscoFeature(account.getDomain(), Namespace.REPORTING);
3020 }
3021
3022 public boolean flexibleOfflineMessageRetrieval() {
3023 return hasDiscoFeature(
3024 account.getDomain(), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
3025 }
3026
3027 public boolean register() {
3028 return hasDiscoFeature(account.getDomain(), Namespace.REGISTER);
3029 }
3030
3031 public boolean invite() {
3032 return connection.streamFeatures != null
3033 && connection.streamFeatures.hasChild("register", Namespace.INVITE);
3034 }
3035
3036 public boolean sm() {
3037 return streamId != null
3038 || (connection.streamFeatures != null
3039 && connection.streamFeatures.streamManagement());
3040 }
3041
3042 public boolean csi() {
3043 return connection.streamFeatures != null
3044 && connection.streamFeatures.clientStateIndication();
3045 }
3046
3047 public boolean pep() {
3048 synchronized (XmppConnection.this.disco) {
3049 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
3050 return info != null && info.hasIdentity("pubsub", "pep");
3051 }
3052 }
3053
3054 public boolean pepPersistent() {
3055 synchronized (XmppConnection.this.disco) {
3056 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
3057 return info != null
3058 && info.getFeatures()
3059 .contains("http://jabber.org/protocol/pubsub#persistent-items");
3060 }
3061 }
3062
3063 public boolean bind2() {
3064 final var loginInfo = XmppConnection.this.loginInfo;
3065 return loginInfo != null && !loginInfo.inlineBindFeatures.isEmpty();
3066 }
3067
3068 public boolean sasl2() {
3069 final var loginInfo = XmppConnection.this.loginInfo;
3070 return loginInfo != null && loginInfo.saslVersion == SaslMechanism.Version.SASL_2;
3071 }
3072
3073 public String loginMechanism() {
3074 final var loginInfo = XmppConnection.this.loginInfo;
3075 return loginInfo == null ? null : loginInfo.saslMechanism.getMechanism();
3076 }
3077
3078 public boolean pepPublishOptions() {
3079 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
3080 }
3081
3082 public boolean pepConfigNodeMax() {
3083 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_CONFIG_NODE_MAX);
3084 }
3085
3086 public boolean pepOmemoWhitelisted() {
3087 return hasDiscoFeature(
3088 account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
3089 }
3090
3091 public boolean mam() {
3092 return MessageArchiveService.Version.has(getAccountFeatures());
3093 }
3094
3095 public List<String> getAccountFeatures() {
3096 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
3097 return result == null ? Collections.emptyList() : result.getFeatures();
3098 }
3099
3100 public boolean push() {
3101 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
3102 || hasDiscoFeature(account.getDomain(), Namespace.PUSH);
3103 }
3104
3105 public boolean rosterVersioning() {
3106 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
3107 }
3108
3109 public void setBlockListRequested(boolean value) {
3110 this.blockListRequested = value;
3111 }
3112
3113 public boolean httpUpload(long filesize) {
3114 if (Config.DISABLE_HTTP_UPLOAD) {
3115 return false;
3116 } else {
3117 for (String namespace :
3118 new String[] {Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
3119 List<Entry<Jid, ServiceDiscoveryResult>> items =
3120 findDiscoItemsByFeature(namespace);
3121 if (!items.isEmpty()) {
3122 try {
3123 long maxsize =
3124 Long.parseLong(
3125 items.get(0)
3126 .getValue()
3127 .getExtendedDiscoInformation(
3128 namespace, "max-file-size"));
3129 if (filesize <= maxsize) {
3130 return true;
3131 } else {
3132 Log.d(
3133 Config.LOGTAG,
3134 account.getJid().asBareJid()
3135 + ": http upload is not available for files with"
3136 + " size "
3137 + filesize
3138 + " (max is "
3139 + maxsize
3140 + ")");
3141 return false;
3142 }
3143 } catch (Exception e) {
3144 return true;
3145 }
3146 }
3147 }
3148 return false;
3149 }
3150 }
3151
3152 public boolean useLegacyHttpUpload() {
3153 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null
3154 && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
3155 }
3156
3157 public long getMaxHttpUploadSize() {
3158 for (String namespace :
3159 new String[] {Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
3160 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
3161 if (!items.isEmpty()) {
3162 try {
3163 return Long.parseLong(
3164 items.get(0)
3165 .getValue()
3166 .getExtendedDiscoInformation(namespace, "max-file-size"));
3167 } catch (Exception e) {
3168 // ignored
3169 }
3170 }
3171 }
3172 return -1;
3173 }
3174
3175 public boolean stanzaIds() {
3176 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
3177 }
3178
3179 public boolean bookmarks2() {
3180 return pepPublishOptions()
3181 && pepConfigNodeMax()
3182 && hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS2_COMPAT);
3183 }
3184
3185 public boolean externalServiceDiscovery() {
3186 return hasDiscoFeature(account.getDomain(), Namespace.EXTERNAL_SERVICE_DISCOVERY);
3187 }
3188
3189 public boolean mds() {
3190 return pepPublishOptions()
3191 && pepConfigNodeMax()
3192 && Config.MESSAGE_DISPLAYED_SYNCHRONIZATION;
3193 }
3194
3195 public boolean mdsServerAssist() {
3196 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.MDS_DISPLAYED);
3197 }
3198 }
3199}