1package eu.siacs.conversations.xmpp;
2
3import static eu.siacs.conversations.utils.Random.SECURE_RANDOM;
4
5import android.content.Context;
6import android.graphics.Bitmap;
7import android.graphics.BitmapFactory;
8import android.os.Build;
9import android.os.SystemClock;
10import android.security.KeyChain;
11import android.util.Base64;
12import android.util.Log;
13import android.util.Pair;
14import android.util.SparseArray;
15
16import androidx.annotation.NonNull;
17import androidx.annotation.Nullable;
18
19import com.google.common.base.Optional;
20import com.google.common.base.Preconditions;
21import com.google.common.base.Strings;
22import com.google.common.collect.ImmutableList;
23
24import org.xmlpull.v1.XmlPullParserException;
25
26import java.io.ByteArrayInputStream;
27import java.io.IOException;
28import java.io.InputStream;
29import java.net.ConnectException;
30import java.net.IDN;
31import java.net.InetAddress;
32import java.net.InetSocketAddress;
33import java.net.Socket;
34import java.net.UnknownHostException;
35import java.security.KeyManagementException;
36import java.security.NoSuchAlgorithmException;
37import java.security.Principal;
38import java.security.PrivateKey;
39import java.security.cert.X509Certificate;
40import java.util.ArrayList;
41import java.util.Arrays;
42import java.util.Collection;
43import java.util.Collections;
44import java.util.HashMap;
45import java.util.HashSet;
46import java.util.Hashtable;
47import java.util.Iterator;
48import java.util.List;
49import java.util.Map.Entry;
50import java.util.Set;
51import java.util.concurrent.CountDownLatch;
52import java.util.concurrent.TimeUnit;
53import java.util.concurrent.atomic.AtomicBoolean;
54import java.util.concurrent.atomic.AtomicInteger;
55import java.util.regex.Matcher;
56
57import javax.net.ssl.KeyManager;
58import javax.net.ssl.SSLContext;
59import javax.net.ssl.SSLPeerUnverifiedException;
60import javax.net.ssl.SSLSocket;
61import javax.net.ssl.SSLSocketFactory;
62import javax.net.ssl.X509KeyManager;
63import javax.net.ssl.X509TrustManager;
64
65import eu.siacs.conversations.Config;
66import eu.siacs.conversations.R;
67import eu.siacs.conversations.crypto.XmppDomainVerifier;
68import eu.siacs.conversations.crypto.axolotl.AxolotlService;
69import eu.siacs.conversations.crypto.sasl.ChannelBinding;
70import eu.siacs.conversations.crypto.sasl.ChannelBindingMechanism;
71import eu.siacs.conversations.crypto.sasl.HashedToken;
72import eu.siacs.conversations.crypto.sasl.SaslMechanism;
73import eu.siacs.conversations.entities.Account;
74import eu.siacs.conversations.entities.Message;
75import eu.siacs.conversations.entities.ServiceDiscoveryResult;
76import eu.siacs.conversations.generator.IqGenerator;
77import eu.siacs.conversations.http.HttpConnectionManager;
78import eu.siacs.conversations.persistance.FileBackend;
79import eu.siacs.conversations.services.MemorizingTrustManager;
80import eu.siacs.conversations.services.MessageArchiveService;
81import eu.siacs.conversations.services.NotificationService;
82import eu.siacs.conversations.services.XmppConnectionService;
83import eu.siacs.conversations.utils.AccountUtils;
84import eu.siacs.conversations.utils.CryptoHelper;
85import eu.siacs.conversations.utils.Patterns;
86import eu.siacs.conversations.utils.PhoneHelper;
87import eu.siacs.conversations.utils.Resolver;
88import eu.siacs.conversations.utils.SSLSockets;
89import eu.siacs.conversations.utils.SocksSocketFactory;
90import eu.siacs.conversations.utils.XmlHelper;
91import eu.siacs.conversations.xml.Element;
92import eu.siacs.conversations.xml.LocalizedContent;
93import eu.siacs.conversations.xml.Namespace;
94import eu.siacs.conversations.xml.Tag;
95import eu.siacs.conversations.xml.TagWriter;
96import eu.siacs.conversations.xml.XmlReader;
97import eu.siacs.conversations.xmpp.bind.Bind2;
98import eu.siacs.conversations.xmpp.forms.Data;
99import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
100import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
101import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
102import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
103import eu.siacs.conversations.xmpp.stanzas.IqPacket;
104import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
105import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
106import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
107import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
108import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
109import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
110import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
111import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
112import okhttp3.HttpUrl;
113
114public class XmppConnection implements Runnable {
115
116 private static final int PACKET_IQ = 0;
117 private static final int PACKET_MESSAGE = 1;
118 private static final int PACKET_PRESENCE = 2;
119 public final OnIqPacketReceived registrationResponseListener =
120 (account, packet) -> {
121 if (packet.getType() == IqPacket.TYPE.RESULT) {
122 account.setOption(Account.OPTION_REGISTER, false);
123 Log.d(
124 Config.LOGTAG,
125 account.getJid().asBareJid()
126 + ": successfully registered new account on server");
127 throw new StateChangingError(Account.State.REGISTRATION_SUCCESSFUL);
128 } else {
129 final List<String> PASSWORD_TOO_WEAK_MSGS =
130 Arrays.asList(
131 "The password is too weak", "Please use a longer password.");
132 Element error = packet.findChild("error");
133 Account.State state = Account.State.REGISTRATION_FAILED;
134 if (error != null) {
135 if (error.hasChild("conflict")) {
136 state = Account.State.REGISTRATION_CONFLICT;
137 } else if (error.hasChild("resource-constraint")
138 && "wait".equals(error.getAttribute("type"))) {
139 state = Account.State.REGISTRATION_PLEASE_WAIT;
140 } else if (error.hasChild("not-acceptable")
141 && PASSWORD_TOO_WEAK_MSGS.contains(
142 error.findChildContent("text"))) {
143 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
144 }
145 }
146 throw new StateChangingError(state);
147 }
148 };
149 protected final Account account;
150 private final Features features = new Features(this);
151 private final HashMap<Jid, ServiceDiscoveryResult> disco = new HashMap<>();
152 private final HashMap<String, Jid> commands = new HashMap<>();
153 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
154 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks =
155 new Hashtable<>();
156 private final Set<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners =
157 new HashSet<>();
158 private final XmppConnectionService mXmppConnectionService;
159 private Socket socket;
160 private XmlReader tagReader;
161 private TagWriter tagWriter = new TagWriter();
162 private boolean shouldAuthenticate = true;
163 private boolean inSmacksSession = false;
164 private boolean quickStartInProgress = false;
165 private boolean isBound = false;
166 private Element streamFeatures;
167 private Element boundStreamFeatures;
168 private String streamId = null;
169 private int stanzasReceived = 0;
170 private int stanzasSent = 0;
171 private int stanzasSentBeforeAuthentication;
172 private long lastPacketReceived = 0;
173 private long lastPingSent = 0;
174 private long lastConnect = 0;
175 private long lastSessionStarted = 0;
176 private long lastDiscoStarted = 0;
177 private boolean isMamPreferenceAlways = false;
178 private final AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
179 private final AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
180 private final AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
181 private final AtomicInteger mSmCatchupMessageCounter = new AtomicInteger(0);
182 private boolean mInteractive = false;
183 private int attempt = 0;
184 private OnPresencePacketReceived presenceListener = null;
185 private OnJinglePacketReceived jingleListener = null;
186 private OnIqPacketReceived unregisteredIqListener = null;
187 private OnMessagePacketReceived messageListener = null;
188 private OnStatusChanged statusListener = null;
189 private OnBindListener bindListener = null;
190 private OnMessageAcknowledged acknowledgedListener = null;
191 private LoginInfo loginInfo;
192 private HashedToken.Mechanism hashTokenRequest;
193 private HttpUrl redirectionUrl = null;
194 private String verifiedHostname = null;
195 private Resolver.Result currentResolverResult;
196 private Resolver.Result seeOtherHostResolverResult;
197 private volatile Thread mThread;
198 private CountDownLatch mStreamCountDownLatch;
199
200 public XmppConnection(final Account account, final XmppConnectionService service) {
201 this.account = account;
202 this.mXmppConnectionService = service;
203 }
204
205 private static void fixResource(Context context, Account account) {
206 String resource = account.getResource();
207 int fixedPartLength =
208 context.getString(R.string.app_name).length() + 1; // include the trailing dot
209 int randomPartLength = 4; // 3 bytes
210 if (resource != null && resource.length() > fixedPartLength + randomPartLength) {
211 if (validBase64(
212 resource.substring(fixedPartLength, fixedPartLength + randomPartLength))) {
213 account.setResource(resource.substring(0, fixedPartLength + randomPartLength));
214 }
215 }
216 }
217
218 private static boolean validBase64(String input) {
219 try {
220 return Base64.decode(input, Base64.URL_SAFE).length == 3;
221 } catch (Throwable throwable) {
222 return false;
223 }
224 }
225
226 private void changeStatus(final Account.State nextStatus) {
227 synchronized (this) {
228 if (Thread.currentThread().isInterrupted()) {
229 Log.d(
230 Config.LOGTAG,
231 account.getJid().asBareJid()
232 + ": not changing status to "
233 + nextStatus
234 + " because thread was interrupted");
235 return;
236 }
237 if (account.getStatus() != nextStatus) {
238 if (nextStatus == Account.State.OFFLINE
239 && account.getStatus() != Account.State.CONNECTING
240 && account.getStatus() != Account.State.ONLINE
241 && account.getStatus() != Account.State.DISABLED
242 && account.getStatus() != Account.State.LOGGED_OUT) {
243 return;
244 }
245 if (nextStatus == Account.State.ONLINE) {
246 this.attempt = 0;
247 }
248 account.setStatus(nextStatus);
249 } else {
250 return;
251 }
252 }
253 if (statusListener != null) {
254 statusListener.onStatusChanged(account);
255 }
256 }
257
258 public Jid getJidForCommand(final String node) {
259 synchronized (this.commands) {
260 return this.commands.get(node);
261 }
262 }
263
264 public void prepareNewConnection() {
265 this.lastConnect = SystemClock.elapsedRealtime();
266 this.lastPingSent = SystemClock.elapsedRealtime();
267 this.lastDiscoStarted = Long.MAX_VALUE;
268 this.mWaitingForSmCatchup.set(false);
269 this.changeStatus(Account.State.CONNECTING);
270 }
271
272 public boolean isWaitingForSmCatchup() {
273 return mWaitingForSmCatchup.get();
274 }
275
276 public void incrementSmCatchupMessageCounter() {
277 this.mSmCatchupMessageCounter.incrementAndGet();
278 }
279
280 protected void connect() {
281 if (mXmppConnectionService.areMessagesInitialized()) {
282 mXmppConnectionService.resetSendingToWaiting(account);
283 }
284 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
285 features.encryptionEnabled = false;
286 this.inSmacksSession = false;
287 this.quickStartInProgress = false;
288 this.isBound = false;
289 this.attempt++;
290 this.verifiedHostname = null; // will be set if user entered hostname is being used or hostname was verified
291 // with dnssec
292 try {
293 Socket localSocket;
294 shouldAuthenticate = !account.isOptionSet(Account.OPTION_REGISTER);
295 this.changeStatus(Account.State.CONNECTING);
296 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
297 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
298 if (useTor) {
299 String destination;
300 if (account.getHostname().isEmpty() || account.isOnion()) {
301 destination = account.getServer();
302 } else {
303 destination = account.getHostname();
304 this.verifiedHostname = destination;
305 }
306
307 final int port = account.getPort();
308 final boolean directTls = Resolver.useDirectTls(port);
309
310 Log.d(
311 Config.LOGTAG,
312 account.getJid().asBareJid()
313 + ": connect to "
314 + destination
315 + " via Tor. directTls="
316 + directTls);
317 localSocket = SocksSocketFactory.createSocketOverTor(destination, port);
318
319 if (directTls) {
320 localSocket = upgradeSocketToTls(localSocket);
321 features.encryptionEnabled = true;
322 }
323
324 try {
325 startXmpp(localSocket);
326 } catch (final InterruptedException e) {
327 Log.d(
328 Config.LOGTAG,
329 account.getJid().asBareJid()
330 + ": thread was interrupted before beginning stream");
331 return;
332 } catch (final Exception e) {
333 throw new IOException("Could not start stream", e);
334 }
335 } else {
336 final String domain = account.getServer();
337 final List<Resolver.Result> results;
338 final boolean hardcoded = extended && !account.getHostname().isEmpty();
339 if (hardcoded) {
340 results = Resolver.fromHardCoded(account.getHostname(), account.getPort());
341 } else {
342 results = Resolver.resolve(domain);
343 }
344 if (Thread.currentThread().isInterrupted()) {
345 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
346 return;
347 }
348 if (results.size() == 0) {
349 Log.e(
350 Config.LOGTAG,
351 account.getJid().asBareJid() + ": Resolver results were empty");
352 return;
353 }
354 final Resolver.Result storedBackupResult;
355 if (hardcoded) {
356 storedBackupResult = null;
357 } else {
358 storedBackupResult =
359 mXmppConnectionService.databaseBackend.findResolverResult(domain);
360 if (storedBackupResult != null && !results.contains(storedBackupResult)) {
361 results.add(storedBackupResult);
362 Log.d(
363 Config.LOGTAG,
364 account.getJid().asBareJid()
365 + ": loaded backup resolver result from db: "
366 + storedBackupResult);
367 }
368 }
369 final Resolver.Result seeOtherHost = this.seeOtherHostResolverResult;
370 if (seeOtherHost != null) {
371 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": injected see-other-host on position 0");
372 results.add(0, seeOtherHost);
373 }
374 for (final Iterator<Resolver.Result> iterator = results.iterator();
375 iterator.hasNext(); ) {
376 final Resolver.Result result = iterator.next();
377 if (Thread.currentThread().isInterrupted()) {
378 Log.d(
379 Config.LOGTAG,
380 account.getJid().asBareJid() + ": Thread was interrupted");
381 return;
382 }
383 try {
384 // if tls is true, encryption is implied and must not be started
385 features.encryptionEnabled = result.isDirectTls();
386 verifiedHostname =
387 result.isAuthenticated() ? result.getHostname().toString() : null;
388 final InetSocketAddress addr;
389 if (result.getIp() != null) {
390 addr = new InetSocketAddress(result.getIp(), result.getPort());
391 Log.d(
392 Config.LOGTAG,
393 account.getJid().asBareJid().toString()
394 + ": using values from resolver "
395 + (result.getHostname() == null
396 ? ""
397 : result.getHostname().toString() + "/")
398 + result.getIp().getHostAddress()
399 + ":"
400 + result.getPort()
401 + " tls: "
402 + features.encryptionEnabled);
403 } else {
404 addr =
405 new InetSocketAddress(
406 IDN.toASCII(result.getHostname().toString()),
407 result.getPort());
408 Log.d(
409 Config.LOGTAG,
410 account.getJid().asBareJid().toString()
411 + ": using values from resolver "
412 + result.getHostname().toString()
413 + ":"
414 + result.getPort()
415 + " tls: "
416 + features.encryptionEnabled);
417 }
418
419 localSocket = new Socket();
420 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
421
422 if (features.encryptionEnabled) {
423 localSocket = upgradeSocketToTls(localSocket);
424 }
425
426 localSocket.setSoTimeout(Config.SOCKET_TIMEOUT * 1000);
427 if (startXmpp(localSocket)) {
428 localSocket.setSoTimeout(
429 0); // reset to 0; once the connection is established we don’t
430 // want this
431 if (!hardcoded && !result.equals(storedBackupResult)) {
432 mXmppConnectionService.databaseBackend.saveResolverResult(
433 domain, result);
434 }
435 this.currentResolverResult = result;
436 this.seeOtherHostResolverResult = null;
437 break; // successfully connected to server that speaks xmpp
438 } else {
439 FileBackend.close(localSocket);
440 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
441 }
442 } catch (final StateChangingException e) {
443 if (!iterator.hasNext()) {
444 throw e;
445 }
446 } catch (InterruptedException e) {
447 Log.d(
448 Config.LOGTAG,
449 account.getJid().asBareJid()
450 + ": thread was interrupted before beginning stream");
451 return;
452 } catch (final Throwable e) {
453 Log.d(
454 Config.LOGTAG,
455 account.getJid().asBareJid().toString()
456 + ": "
457 + e.getMessage()
458 + "("
459 + e.getClass().getName()
460 + ")");
461 if (!iterator.hasNext()) {
462 throw new UnknownHostException();
463 }
464 }
465 }
466 }
467 processStream();
468 } catch (final SecurityException e) {
469 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
470 } catch (final StateChangingException e) {
471 this.changeStatus(e.state);
472 } catch (final UnknownHostException
473 | ConnectException
474 | SocksSocketFactory.HostNotFoundException e) {
475 this.changeStatus(Account.State.SERVER_NOT_FOUND);
476 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
477 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
478 } catch (final IOException | XmlPullParserException e) {
479 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
480 this.changeStatus(Account.State.OFFLINE);
481 this.attempt = Math.max(0, this.attempt - 1);
482 } finally {
483 if (!Thread.currentThread().isInterrupted()) {
484 forceCloseSocket();
485 } else {
486 Log.d(
487 Config.LOGTAG,
488 account.getJid().asBareJid()
489 + ": not force closing socket because thread was interrupted");
490 }
491 }
492 }
493
494 /**
495 * Starts xmpp protocol, call after connecting to socket
496 *
497 * @return true if server returns with valid xmpp, false otherwise
498 */
499 private boolean startXmpp(final Socket socket) throws Exception {
500 if (Thread.currentThread().isInterrupted()) {
501 throw new InterruptedException();
502 }
503 this.socket = socket;
504 tagReader = new XmlReader();
505 if (tagWriter != null) {
506 tagWriter.forceClose();
507 }
508 tagWriter = new TagWriter();
509 tagWriter.setOutputStream(socket.getOutputStream());
510 tagReader.setInputStream(socket.getInputStream());
511 tagWriter.beginDocument();
512 final boolean quickStart;
513 if (socket instanceof SSLSocket) {
514 final SSLSocket sslSocket = (SSLSocket) socket;
515 SSLSockets.log(account, sslSocket);
516 quickStart = establishStream(SSLSockets.version(sslSocket));
517 } else {
518 quickStart = establishStream(SSLSockets.Version.NONE);
519 }
520 final Tag tag = tagReader.readTag();
521 if (Thread.currentThread().isInterrupted()) {
522 throw new InterruptedException();
523 }
524 final boolean success = tag != null && tag.isStart("stream", Namespace.STREAMS);
525 if (success && quickStart) {
526 this.quickStartInProgress = true;
527 }
528 return success;
529 }
530
531 private SSLSocketFactory getSSLSocketFactory()
532 throws NoSuchAlgorithmException, KeyManagementException {
533 final SSLContext sc = SSLSockets.getSSLContext();
534 final MemorizingTrustManager trustManager =
535 this.mXmppConnectionService.getMemorizingTrustManager();
536 final KeyManager[] keyManager;
537 if (account.getPrivateKeyAlias() != null) {
538 keyManager = new KeyManager[] {new MyKeyManager()};
539 } else {
540 keyManager = null;
541 }
542 final String domain = account.getServer();
543 sc.init(
544 keyManager,
545 new X509TrustManager[] {
546 mInteractive
547 ? trustManager.getInteractive(domain)
548 : trustManager.getNonInteractive(domain)
549 },
550 SECURE_RANDOM);
551 return sc.getSocketFactory();
552 }
553
554 @Override
555 public void run() {
556 synchronized (this) {
557 this.mThread = Thread.currentThread();
558 if (this.mThread.isInterrupted()) {
559 Log.d(
560 Config.LOGTAG,
561 account.getJid().asBareJid()
562 + ": aborting connect because thread was interrupted");
563 return;
564 }
565 forceCloseSocket();
566 }
567 connect();
568 }
569
570 private void processStream() throws XmlPullParserException, IOException {
571 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
572 this.mStreamCountDownLatch = streamCountDownLatch;
573 Tag nextTag = tagReader.readTag();
574 while (nextTag != null && !nextTag.isEnd("stream")) {
575 if (nextTag.isStart("error")) {
576 processStreamError(nextTag);
577 } else if (nextTag.isStart("features", Namespace.STREAMS)) {
578 processStreamFeatures(nextTag);
579 } else if (nextTag.isStart("proceed", Namespace.TLS)) {
580 switchOverToTls();
581 } else if (nextTag.isStart("success")) {
582 final Element success = tagReader.readElement(nextTag);
583 if (processSuccess(success)) {
584 break;
585 }
586 } else if (nextTag.isStart("failure", Namespace.TLS)) {
587 throw new StateChangingException(Account.State.TLS_ERROR);
588 } else if (nextTag.isStart("failure")) {
589 final Element failure = tagReader.readElement(nextTag);
590 processFailure(failure);
591 } else if (nextTag.isStart("continue", Namespace.SASL_2)) {
592 // two step sasl2 - we don’t support this yet
593 throw new StateChangingException(Account.State.INCOMPATIBLE_CLIENT);
594 } else if (nextTag.isStart("challenge")) {
595 if (isSecure() && this.loginInfo != null) {
596 final Element challenge = tagReader.readElement(nextTag);
597 processChallenge(challenge);
598 } else {
599 Log.d(
600 Config.LOGTAG,
601 account.getJid().asBareJid()
602 + ": received 'challenge on an unsecure connection");
603 throw new StateChangingException(Account.State.INCOMPATIBLE_CLIENT);
604 }
605 } else if (nextTag.isStart("enabled", Namespace.STREAM_MANAGEMENT)) {
606 final Element enabled = tagReader.readElement(nextTag);
607 processEnabled(enabled);
608 } else if (nextTag.isStart("resumed", Namespace.STREAM_MANAGEMENT)) {
609 final Element resumed = tagReader.readElement(nextTag);
610 processResumed(resumed);
611 } else if (nextTag.isStart("r", Namespace.STREAM_MANAGEMENT)) {
612 tagReader.readElement(nextTag);
613 if (Config.EXTENDED_SM_LOGGING) {
614 Log.d(
615 Config.LOGTAG,
616 account.getJid().asBareJid()
617 + ": acknowledging stanza #"
618 + this.stanzasReceived);
619 }
620 final AckPacket ack = new AckPacket(this.stanzasReceived);
621 tagWriter.writeStanzaAsync(ack);
622 } else if (nextTag.isStart("a", Namespace.STREAM_MANAGEMENT)) {
623 boolean accountUiNeedsRefresh = false;
624 synchronized (NotificationService.CATCHUP_LOCK) {
625 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
626 final int messageCount = mSmCatchupMessageCounter.get();
627 final int pendingIQs = packetCallbacks.size();
628 Log.d(
629 Config.LOGTAG,
630 account.getJid().asBareJid()
631 + ": SM catchup complete (messages="
632 + messageCount
633 + ", pending IQs="
634 + pendingIQs
635 + ")");
636 accountUiNeedsRefresh = true;
637 if (messageCount > 0) {
638 mXmppConnectionService
639 .getNotificationService()
640 .finishBacklog(true, account);
641 }
642 }
643 }
644 if (accountUiNeedsRefresh) {
645 mXmppConnectionService.updateAccountUi();
646 }
647 final Element ack = tagReader.readElement(nextTag);
648 lastPacketReceived = SystemClock.elapsedRealtime();
649 final boolean acknowledgedMessages;
650 synchronized (this.mStanzaQueue) {
651 final Optional<Integer> serverSequence = ack.getOptionalIntAttribute("h");
652 if (serverSequence.isPresent()) {
653 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence.get());
654 } else {
655 acknowledgedMessages = false;
656 Log.d(
657 Config.LOGTAG,
658 account.getJid().asBareJid()
659 + ": server send ack without sequence number");
660 }
661 }
662 if (acknowledgedMessages) {
663 mXmppConnectionService.updateConversationUi();
664 }
665 } else if (nextTag.isStart("failed", Namespace.STREAM_MANAGEMENT)) {
666 final Element failed = tagReader.readElement(nextTag);
667 processFailed(failed, true);
668 } else if (nextTag.isStart("iq", Namespace.JABBER_CLIENT)) {
669 processIq(nextTag);
670 } else if (nextTag.isStart("message", Namespace.JABBER_CLIENT)) {
671 processMessage(nextTag);
672 } else if (nextTag.isStart("presence", Namespace.JABBER_CLIENT)) {
673 processPresence(nextTag);
674 } else {
675 Log.e(
676 Config.LOGTAG,
677 account.getJid().asBareJid()
678 + ": Encountered unknown stream element"
679 + nextTag.identifier());
680 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
681 }
682 nextTag = tagReader.readTag();
683 }
684 if (nextTag != null && nextTag.isEnd("stream")) {
685 streamCountDownLatch.countDown();
686 }
687 }
688
689 private void processChallenge(final Element challenge) throws IOException {
690 final SaslMechanism.Version version;
691 try {
692 version = SaslMechanism.Version.of(challenge);
693 } catch (final IllegalArgumentException e) {
694 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
695 }
696 final Element response;
697 if (version == SaslMechanism.Version.SASL) {
698 response = new Element("response", Namespace.SASL);
699 } else if (version == SaslMechanism.Version.SASL_2) {
700 response = new Element("response", Namespace.SASL_2);
701 } else {
702 throw new AssertionError("Missing implementation for " + version);
703 }
704 try {
705 response.setContent(this.loginInfo.saslMechanism.getResponse(challenge.getContent(), sslSocketOrNull(socket)));
706 } catch (final SaslMechanism.AuthenticationException e) {
707 // TODO: Send auth abort tag.
708 Log.e(Config.LOGTAG, e.toString());
709 throw new StateChangingException(Account.State.UNAUTHORIZED);
710 }
711 tagWriter.writeElement(response);
712 }
713
714 private boolean processSuccess(final Element success)
715 throws IOException, XmlPullParserException {
716 final SaslMechanism.Version version;
717 try {
718 version = SaslMechanism.Version.of(success);
719 } catch (final IllegalArgumentException e) {
720 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
721 }
722 final LoginInfo currentLoginInfo = this.loginInfo;
723 final SaslMechanism currentSaslMechanism = LoginInfo.mechanism(currentLoginInfo);
724 if (currentLoginInfo == null || currentSaslMechanism == null) {
725 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
726 }
727 final String challenge;
728 if (version == SaslMechanism.Version.SASL) {
729 challenge = success.getContent();
730 } else if (version == SaslMechanism.Version.SASL_2) {
731 challenge = success.findChildContent("additional-data");
732 } else {
733 throw new AssertionError("Missing implementation for " + version);
734 }
735 try {
736 currentSaslMechanism.getResponse(challenge, sslSocketOrNull(socket));
737 } catch (final SaslMechanism.AuthenticationException e) {
738 Log.e(Config.LOGTAG, String.valueOf(e));
739 throw new StateChangingException(Account.State.UNAUTHORIZED);
740 }
741 Log.d(
742 Config.LOGTAG,
743 account.getJid().asBareJid().toString() + ": logged in (using " + version + ")");
744 if (SaslMechanism.pin(currentSaslMechanism)) {
745 account.setPinnedMechanism(currentSaslMechanism);
746 }
747 if (version == SaslMechanism.Version.SASL_2) {
748 final String authorizationIdentifier =
749 success.findChildContent("authorization-identifier");
750 final Jid authorizationJid;
751 try {
752 authorizationJid =
753 Strings.isNullOrEmpty(authorizationIdentifier)
754 ? null
755 : Jid.ofEscaped(authorizationIdentifier);
756 } catch (final IllegalArgumentException e) {
757 Log.d(
758 Config.LOGTAG,
759 account.getJid().asBareJid()
760 + ": SASL 2.0 authorization identifier was not a valid jid");
761 throw new StateChangingException(Account.State.BIND_FAILURE);
762 }
763 if (authorizationJid == null) {
764 throw new StateChangingException(Account.State.BIND_FAILURE);
765 }
766 Log.d(
767 Config.LOGTAG,
768 account.getJid().asBareJid()
769 + ": SASL 2.0 authorization identifier was "
770 + authorizationJid);
771 if (!account.getJid().getDomain().equals(authorizationJid.getDomain())) {
772 Log.d(
773 Config.LOGTAG,
774 account.getJid().asBareJid()
775 + ": server tried to re-assign domain to "
776 + authorizationJid.getDomain());
777 throw new StateChangingError(Account.State.BIND_FAILURE);
778 }
779 if (authorizationJid.isFullJid() && account.setJid(authorizationJid)) {
780 Log.d(
781 Config.LOGTAG,
782 account.getJid().asBareJid()
783 + ": jid changed during SASL 2.0. updating database");
784 }
785 final Element bound = success.findChild("bound", Namespace.BIND2);
786 final Element resumed = success.findChild("resumed", Namespace.STREAM_MANAGEMENT);
787 final Element failed = success.findChild("failed", Namespace.STREAM_MANAGEMENT);
788 final Element tokenWrapper = success.findChild("token", Namespace.FAST);
789 final String token = tokenWrapper == null ? null : tokenWrapper.getAttribute("token");
790 if (bound != null && resumed != null) {
791 Log.d(
792 Config.LOGTAG,
793 account.getJid().asBareJid()
794 + ": server sent bound and resumed in SASL2 success");
795 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
796 }
797 if (resumed != null && streamId != null) {
798 if (this.boundStreamFeatures != null) {
799 this.streamFeatures = this.boundStreamFeatures;
800 Log.d(Config.LOGTAG, "putting previous stream features back in place: " + XmlHelper.printElementNames(this.boundStreamFeatures));
801 }
802 processResumed(resumed);
803 } else if (failed != null) {
804 processFailed(failed, false); // wait for new stream features
805 }
806 if (bound != null) {
807 clearIqCallbacks();
808 this.isBound = true;
809 processNopStreamFeatures();
810 this.boundStreamFeatures = this.streamFeatures;
811 final Element streamManagementEnabled =
812 bound.findChild("enabled", Namespace.STREAM_MANAGEMENT);
813 final Element carbonsEnabled = bound.findChild("enabled", Namespace.CARBONS);
814 final boolean waitForDisco;
815 if (streamManagementEnabled != null) {
816 resetOutboundStanzaQueue();
817 processEnabled(streamManagementEnabled);
818 waitForDisco = true;
819 } else {
820 //if we did not enable stream management in bind do it now
821 waitForDisco = enableStreamManagement();
822 }
823 final boolean negotiatedCarbons;
824 if (carbonsEnabled != null) {
825 negotiatedCarbons = true;
826 Log.d(
827 Config.LOGTAG,
828 account.getJid().asBareJid()
829 + ": successfully enabled carbons (via Bind 2.0)");
830 features.carbonsEnabled = true;
831 } else if (loginInfo.inlineBindFeatures.contains(Namespace.CARBONS)) {
832 negotiatedCarbons = true;
833 Log.d(
834 Config.LOGTAG,
835 account.getJid().asBareJid()
836 + ": successfully enabled carbons (via Bind 2.0/implicit)");
837 features.carbonsEnabled = true;
838 } else {
839 negotiatedCarbons = false;
840 }
841 sendPostBindInitialization(waitForDisco, negotiatedCarbons);
842 }
843 final HashedToken.Mechanism tokenMechanism;
844 if (SaslMechanism.hashedToken(currentSaslMechanism)) {
845 tokenMechanism = ((HashedToken) currentSaslMechanism).getTokenMechanism();
846 } else if (this.hashTokenRequest != null) {
847 tokenMechanism = this.hashTokenRequest;
848 } else {
849 tokenMechanism = null;
850 }
851 if (tokenMechanism != null && !Strings.isNullOrEmpty(token)) {
852 if (ChannelBinding.priority(tokenMechanism.channelBinding) >= ChannelBindingMechanism.getPriority(currentSaslMechanism)) {
853 this.account.setFastToken(tokenMechanism, token);
854 Log.d(
855 Config.LOGTAG,
856 account.getJid().asBareJid() + ": storing hashed token " + tokenMechanism);
857 } else {
858 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": not accepting hashed token "+ tokenMechanism.name()+" for log in mechanism "+currentSaslMechanism.getMechanism());
859 this.account.resetFastToken();
860 }
861 } else if (this.hashTokenRequest != null) {
862 Log.w(
863 Config.LOGTAG,
864 account.getJid().asBareJid()
865 + ": no response to our hashed token request "
866 + this.hashTokenRequest);
867 }
868 }
869 mXmppConnectionService.databaseBackend.updateAccount(account);
870 this.quickStartInProgress = false;
871 if (version == SaslMechanism.Version.SASL) {
872 tagReader.reset();
873 sendStartStream(false, true);
874 final Tag tag = tagReader.readTag();
875 if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
876 processStream();
877 return true;
878 } else {
879 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
880 }
881 } else {
882 return false;
883 }
884 }
885
886 private void resetOutboundStanzaQueue() {
887 synchronized (this.mStanzaQueue) {
888 final List<AbstractAcknowledgeableStanza> intermediateStanzas = new ArrayList<>();
889 if (Config.EXTENDED_SM_LOGGING) {
890 Log.d(
891 Config.LOGTAG,
892 account.getJid().asBareJid()
893 + ": stanzas sent before auth: "
894 + this.stanzasSentBeforeAuthentication);
895 }
896 for (int i = this.stanzasSentBeforeAuthentication + 1; i <= this.stanzasSent; ++i) {
897 final AbstractAcknowledgeableStanza stanza = this.mStanzaQueue.get(i);
898 if (stanza != null) {
899 intermediateStanzas.add(stanza);
900 }
901 }
902 this.mStanzaQueue.clear();
903 for (int i = 0; i < intermediateStanzas.size(); ++i) {
904 this.mStanzaQueue.put(i, intermediateStanzas.get(i));
905 }
906 this.stanzasSent = intermediateStanzas.size();
907 if (Config.EXTENDED_SM_LOGGING) {
908 Log.d(
909 Config.LOGTAG,
910 account.getJid().asBareJid()
911 + ": resetting outbound stanza queue to "
912 + this.stanzasSent);
913 }
914 }
915 }
916
917 private void processNopStreamFeatures() throws IOException {
918 final Tag tag = tagReader.readTag();
919 if (tag != null && tag.isStart("features", Namespace.STREAMS)) {
920 this.streamFeatures = tagReader.readElement(tag);
921 Log.d(
922 Config.LOGTAG,
923 account.getJid().asBareJid()
924 + ": processed NOP stream features after success: "
925 + XmlHelper.printElementNames(this.streamFeatures));
926 } else {
927 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received " + tag);
928 Log.d(
929 Config.LOGTAG,
930 account.getJid().asBareJid()
931 + ": server did not send stream features after SASL2 success");
932 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
933 }
934 }
935
936 private void processFailure(final Element failure) throws IOException {
937 final SaslMechanism.Version version;
938 try {
939 version = SaslMechanism.Version.of(failure);
940 } catch (final IllegalArgumentException e) {
941 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
942 }
943 Log.d(Config.LOGTAG, failure.toString());
944 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": login failure " + version);
945 if (SaslMechanism.hashedToken(LoginInfo.mechanism(this.loginInfo))) {
946 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resetting token");
947 account.resetFastToken();
948 mXmppConnectionService.databaseBackend.updateAccount(account);
949 }
950 if (failure.hasChild("temporary-auth-failure")) {
951 throw new StateChangingException(Account.State.TEMPORARY_AUTH_FAILURE);
952 } else if (failure.hasChild("account-disabled")) {
953 final String text = failure.findChildContent("text");
954 if (Strings.isNullOrEmpty(text)) {
955 throw new StateChangingException(Account.State.UNAUTHORIZED);
956 }
957 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
958 if (matcher.find()) {
959 final HttpUrl url;
960 try {
961 url = HttpUrl.get(text.substring(matcher.start(), matcher.end()));
962 } catch (final IllegalArgumentException e) {
963 throw new StateChangingException(Account.State.UNAUTHORIZED);
964 }
965 if (url.isHttps()) {
966 this.redirectionUrl = url;
967 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
968 }
969 }
970 }
971 if (SaslMechanism.hashedToken(LoginInfo.mechanism(this.loginInfo))) {
972 Log.d(
973 Config.LOGTAG,
974 account.getJid().asBareJid()
975 + ": fast authentication failed. falling back to regular authentication");
976 authenticate();
977 } else {
978 throw new StateChangingException(Account.State.UNAUTHORIZED);
979 }
980 }
981
982 private static SSLSocket sslSocketOrNull(final Socket socket) {
983 if (socket instanceof SSLSocket) {
984 return (SSLSocket) socket;
985 } else {
986 return null;
987 }
988 }
989
990 private void processEnabled(final Element enabled) {
991 final String streamId;
992 if (enabled.getAttributeAsBoolean("resume")) {
993 streamId = enabled.getAttribute("id");
994 Log.d(
995 Config.LOGTAG,
996 account.getJid().asBareJid().toString()
997 + ": stream management enabled (resumable)");
998 } else {
999 Log.d(
1000 Config.LOGTAG,
1001 account.getJid().asBareJid().toString() + ": stream management enabled");
1002 streamId = null;
1003 }
1004 this.streamId = streamId;
1005 this.stanzasReceived = 0;
1006 this.inSmacksSession = true;
1007 final RequestPacket r = new RequestPacket();
1008 tagWriter.writeStanzaAsync(r);
1009 }
1010
1011 private void processResumed(final Element resumed) throws StateChangingException {
1012 this.inSmacksSession = true;
1013 this.isBound = true;
1014 this.tagWriter.writeStanzaAsync(new RequestPacket());
1015 lastPacketReceived = SystemClock.elapsedRealtime();
1016 final Optional<Integer> h = resumed.getOptionalIntAttribute("h");
1017 final int serverCount;
1018 if (h.isPresent()) {
1019 serverCount = h.get();
1020 } else {
1021 resetStreamId();
1022 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1023 }
1024 final ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
1025 final boolean acknowledgedMessages;
1026 synchronized (this.mStanzaQueue) {
1027 if (serverCount < stanzasSent) {
1028 Log.d(
1029 Config.LOGTAG,
1030 account.getJid().asBareJid() + ": session resumed with lost packages");
1031 stanzasSent = serverCount;
1032 } else {
1033 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": session resumed");
1034 }
1035 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
1036 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
1037 failedStanzas.add(mStanzaQueue.valueAt(i));
1038 }
1039 mStanzaQueue.clear();
1040 }
1041 if (acknowledgedMessages) {
1042 mXmppConnectionService.updateConversationUi();
1043 }
1044 Log.d(
1045 Config.LOGTAG,
1046 account.getJid().asBareJid() + ": resending " + failedStanzas.size() + " stanzas");
1047 for (final AbstractAcknowledgeableStanza packet : failedStanzas) {
1048 if (packet instanceof MessagePacket) {
1049 MessagePacket message = (MessagePacket) packet;
1050 mXmppConnectionService.markMessage(
1051 account,
1052 message.getTo().asBareJid(),
1053 message.getId(),
1054 Message.STATUS_UNSEND);
1055 }
1056 sendPacket(packet);
1057 }
1058 changeStatusToOnline();
1059 }
1060
1061 private void changeStatusToOnline() {
1062 Log.d(
1063 Config.LOGTAG,
1064 account.getJid().asBareJid() + ": online with resource " + account.getResource());
1065 changeStatus(Account.State.ONLINE);
1066 }
1067
1068 private void processFailed(final Element failed, final boolean sendBindRequest) {
1069 final Optional<Integer> serverCount = failed.getOptionalIntAttribute("h");
1070 if (serverCount.isPresent()) {
1071 Log.d(
1072 Config.LOGTAG,
1073 account.getJid().asBareJid()
1074 + ": resumption failed but server acknowledged stanza #"
1075 + serverCount.get());
1076 final boolean acknowledgedMessages;
1077 synchronized (this.mStanzaQueue) {
1078 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount.get());
1079 }
1080 if (acknowledgedMessages) {
1081 mXmppConnectionService.updateConversationUi();
1082 }
1083 } else {
1084 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
1085 }
1086 resetStreamId();
1087 if (sendBindRequest) {
1088 sendBindRequest();
1089 }
1090 }
1091
1092 private boolean acknowledgeStanzaUpTo(final int serverCount) {
1093 if (serverCount > stanzasSent) {
1094 Log.e(
1095 Config.LOGTAG,
1096 "server acknowledged more stanzas than we sent. serverCount="
1097 + serverCount
1098 + ", ourCount="
1099 + stanzasSent);
1100 }
1101 boolean acknowledgedMessages = false;
1102 for (int i = 0; i < mStanzaQueue.size(); ++i) {
1103 if (serverCount >= mStanzaQueue.keyAt(i)) {
1104 if (Config.EXTENDED_SM_LOGGING) {
1105 Log.d(
1106 Config.LOGTAG,
1107 account.getJid().asBareJid()
1108 + ": server acknowledged stanza #"
1109 + mStanzaQueue.keyAt(i));
1110 }
1111 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
1112 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
1113 final MessagePacket packet = (MessagePacket) stanza;
1114 final String id = packet.getId();
1115 final Jid to = packet.getTo();
1116 if (id != null && to != null) {
1117 acknowledgedMessages |=
1118 acknowledgedListener.onMessageAcknowledged(account, to, id);
1119 }
1120 }
1121 mStanzaQueue.removeAt(i);
1122 i--;
1123 }
1124 }
1125 return acknowledgedMessages;
1126 }
1127
1128 private @NonNull Element processPacket(final Tag currentTag, final int packetType)
1129 throws IOException {
1130 final Element element;
1131 switch (packetType) {
1132 case PACKET_IQ:
1133 element = new IqPacket();
1134 break;
1135 case PACKET_MESSAGE:
1136 element = new MessagePacket();
1137 break;
1138 case PACKET_PRESENCE:
1139 element = new PresencePacket();
1140 break;
1141 default:
1142 throw new AssertionError("Should never encounter invalid type");
1143 }
1144 element.setAttributes(currentTag.getAttributes());
1145 Tag nextTag = tagReader.readTag();
1146 if (nextTag == null) {
1147 throw new IOException("interrupted mid tag");
1148 }
1149 while (!nextTag.isEnd(element.getName())) {
1150 if (!nextTag.isNo()) {
1151 element.addChild(tagReader.readElement(nextTag));
1152 }
1153 nextTag = tagReader.readTag();
1154 if (nextTag == null) {
1155 throw new IOException("interrupted mid tag");
1156 }
1157 }
1158 if (stanzasReceived == Integer.MAX_VALUE) {
1159 resetStreamId();
1160 throw new IOException("time to restart the session. cant handle >2 billion pcks");
1161 }
1162 if (inSmacksSession) {
1163 ++stanzasReceived;
1164 } else if (features.sm()) {
1165 Log.d(
1166 Config.LOGTAG,
1167 account.getJid().asBareJid()
1168 + ": not counting stanza("
1169 + element.getClass().getSimpleName()
1170 + "). Not in smacks session.");
1171 }
1172 lastPacketReceived = SystemClock.elapsedRealtime();
1173 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
1174 Log.d(Config.LOGTAG, "[background stanza] " + element);
1175 }
1176 if (element instanceof IqPacket
1177 && (((IqPacket) element).getType() == IqPacket.TYPE.SET)
1178 && element.hasChild("jingle", Namespace.JINGLE)) {
1179 return JinglePacket.upgrade((IqPacket) element);
1180 } else {
1181 return element;
1182 }
1183 }
1184
1185 private void processIq(final Tag currentTag) throws IOException {
1186 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
1187 if (!packet.valid()) {
1188 Log.e(
1189 Config.LOGTAG,
1190 "encountered invalid iq from='"
1191 + packet.getFrom()
1192 + "' to='"
1193 + packet.getTo()
1194 + "'");
1195 return;
1196 }
1197 if (packet instanceof JinglePacket) {
1198 if (this.jingleListener != null) {
1199 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
1200 }
1201 } else {
1202 OnIqPacketReceived callback = null;
1203 synchronized (this.packetCallbacks) {
1204 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple =
1205 packetCallbacks.get(packet.getId());
1206 if (packetCallbackDuple != null) {
1207 // Packets to the server should have responses from the server
1208 if (packetCallbackDuple.first.toServer(account)) {
1209 if (packet.fromServer(account)) {
1210 callback = packetCallbackDuple.second;
1211 packetCallbacks.remove(packet.getId());
1212 } else {
1213 Log.e(
1214 Config.LOGTAG,
1215 account.getJid().asBareJid().toString()
1216 + ": ignoring spoofed iq packet");
1217 }
1218 } else {
1219 if (packet.getFrom() != null
1220 && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
1221 callback = packetCallbackDuple.second;
1222 packetCallbacks.remove(packet.getId());
1223 } else {
1224 Log.e(
1225 Config.LOGTAG,
1226 account.getJid().asBareJid().toString()
1227 + ": ignoring spoofed iq packet");
1228 }
1229 }
1230 } else if (packet.getType() == IqPacket.TYPE.GET
1231 || packet.getType() == IqPacket.TYPE.SET) {
1232 callback = this.unregisteredIqListener;
1233 }
1234 }
1235 if (callback != null) {
1236 try {
1237 callback.onIqPacketReceived(account, packet);
1238 } catch (StateChangingError error) {
1239 throw new StateChangingException(error.state);
1240 }
1241 }
1242 }
1243 }
1244
1245 private void processMessage(final Tag currentTag) throws IOException {
1246 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
1247 if (!packet.valid()) {
1248 Log.e(
1249 Config.LOGTAG,
1250 "encountered invalid message from='"
1251 + packet.getFrom()
1252 + "' to='"
1253 + packet.getTo()
1254 + "'");
1255 return;
1256 }
1257 this.messageListener.onMessagePacketReceived(account, packet);
1258 }
1259
1260 private void processPresence(final Tag currentTag) throws IOException {
1261 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
1262 if (!packet.valid()) {
1263 Log.e(
1264 Config.LOGTAG,
1265 "encountered invalid presence from='"
1266 + packet.getFrom()
1267 + "' to='"
1268 + packet.getTo()
1269 + "'");
1270 return;
1271 }
1272 this.presenceListener.onPresencePacketReceived(account, packet);
1273 }
1274
1275 private void sendStartTLS() throws IOException {
1276 final Tag startTLS = Tag.empty("starttls");
1277 startTLS.setAttribute("xmlns", Namespace.TLS);
1278 tagWriter.writeTag(startTLS);
1279 }
1280
1281 private void switchOverToTls() throws XmlPullParserException, IOException {
1282 tagReader.readTag();
1283 final Socket socket = this.socket;
1284 final SSLSocket sslSocket = upgradeSocketToTls(socket);
1285 this.socket = sslSocket;
1286 this.tagReader.setInputStream(sslSocket.getInputStream());
1287 this.tagWriter.setOutputStream(sslSocket.getOutputStream());
1288 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
1289 final boolean quickStart;
1290 try {
1291 quickStart = establishStream(SSLSockets.version(sslSocket));
1292 } catch (final InterruptedException e) {
1293 return;
1294 }
1295 if (quickStart) {
1296 this.quickStartInProgress = true;
1297 }
1298 features.encryptionEnabled = true;
1299 final Tag tag = tagReader.readTag();
1300 if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
1301 SSLSockets.log(account, sslSocket);
1302 processStream();
1303 } else {
1304 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
1305 }
1306 sslSocket.close();
1307 }
1308
1309 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
1310 final SSLSocketFactory sslSocketFactory;
1311 try {
1312 sslSocketFactory = getSSLSocketFactory();
1313 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
1314 throw new StateChangingException(Account.State.TLS_ERROR);
1315 }
1316 final InetAddress address = socket.getInetAddress();
1317 final SSLSocket sslSocket =
1318 (SSLSocket)
1319 sslSocketFactory.createSocket(
1320 socket, address.getHostAddress(), socket.getPort(), true);
1321 SSLSockets.setSecurity(sslSocket);
1322 SSLSockets.setHostname(sslSocket, IDN.toASCII(account.getServer()));
1323 SSLSockets.setApplicationProtocol(sslSocket, "xmpp-client");
1324 final XmppDomainVerifier xmppDomainVerifier = new XmppDomainVerifier();
1325 try {
1326 if (!xmppDomainVerifier.verify(
1327 account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
1328 Log.d(
1329 Config.LOGTAG,
1330 account.getJid().asBareJid()
1331 + ": TLS certificate domain verification failed");
1332 FileBackend.close(sslSocket);
1333 throw new StateChangingException(Account.State.TLS_ERROR_DOMAIN);
1334 }
1335 } catch (final SSLPeerUnverifiedException e) {
1336 FileBackend.close(sslSocket);
1337 throw new StateChangingException(Account.State.TLS_ERROR);
1338 }
1339 return sslSocket;
1340 }
1341
1342 private void processStreamFeatures(final Tag currentTag) throws IOException {
1343 this.streamFeatures = tagReader.readElement(currentTag);
1344 final boolean isSecure = isSecure();
1345 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
1346 if (this.quickStartInProgress) {
1347 if (this.streamFeatures.hasChild("authentication", Namespace.SASL_2)) {
1348 Log.d(
1349 Config.LOGTAG,
1350 account.getJid().asBareJid()
1351 + ": quick start in progress. ignoring features: "
1352 + XmlHelper.printElementNames(this.streamFeatures));
1353 if (SaslMechanism.hashedToken(LoginInfo.mechanism(this.loginInfo))) {
1354 return;
1355 }
1356 if (isFastTokenAvailable(
1357 this.streamFeatures.findChild("authentication", Namespace.SASL_2))) {
1358 Log.d(
1359 Config.LOGTAG,
1360 account.getJid().asBareJid()
1361 + ": fast token available; resetting quick start");
1362 account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false);
1363 mXmppConnectionService.databaseBackend.updateAccount(account);
1364 }
1365 return;
1366 }
1367 Log.d(
1368 Config.LOGTAG,
1369 account.getJid().asBareJid()
1370 + ": server lost support for SASL 2. quick start not possible");
1371 this.account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false);
1372 mXmppConnectionService.databaseBackend.updateAccount(account);
1373 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1374 }
1375 if (this.streamFeatures.hasChild("starttls", Namespace.TLS)
1376 && !features.encryptionEnabled) {
1377 sendStartTLS();
1378 } else if (this.streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1379 && account.isOptionSet(Account.OPTION_REGISTER)) {
1380 if (isSecure) {
1381 register();
1382 } else {
1383 Log.d(
1384 Config.LOGTAG,
1385 account.getJid().asBareJid()
1386 + ": unable to find STARTTLS for registration process "
1387 + XmlHelper.printElementNames(this.streamFeatures));
1388 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1389 }
1390 } else if (!this.streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1391 && account.isOptionSet(Account.OPTION_REGISTER)) {
1392 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
1393 } else if (this.streamFeatures.hasChild("authentication", Namespace.SASL_2)
1394 && shouldAuthenticate
1395 && isSecure) {
1396 authenticate(SaslMechanism.Version.SASL_2);
1397 } else if (this.streamFeatures.hasChild("mechanisms", Namespace.SASL)
1398 && shouldAuthenticate
1399 && isSecure) {
1400 authenticate(SaslMechanism.Version.SASL);
1401 } else if (this.streamFeatures.hasChild("sm", Namespace.STREAM_MANAGEMENT)
1402 && streamId != null
1403 && !inSmacksSession) {
1404 if (Config.EXTENDED_SM_LOGGING) {
1405 Log.d(
1406 Config.LOGTAG,
1407 account.getJid().asBareJid()
1408 + ": resuming after stanza #"
1409 + stanzasReceived);
1410 }
1411 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived);
1412 this.mSmCatchupMessageCounter.set(0);
1413 this.mWaitingForSmCatchup.set(true);
1414 this.tagWriter.writeStanzaAsync(resume);
1415 } else if (needsBinding) {
1416 if (this.streamFeatures.hasChild("bind", Namespace.BIND) && isSecure) {
1417 sendBindRequest();
1418 } else {
1419 Log.d(
1420 Config.LOGTAG,
1421 account.getJid().asBareJid()
1422 + ": unable to find bind feature "
1423 + XmlHelper.printElementNames(this.streamFeatures));
1424 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1425 }
1426 } else {
1427
1428 Log.d(
1429 Config.LOGTAG,
1430 account.getJid().asBareJid()
1431 + ": received NOP stream features: "
1432 + XmlHelper.printElementNames(this.streamFeatures));
1433 }
1434 }
1435
1436 private void authenticate() throws IOException {
1437 final boolean isSecure = isSecure();
1438 if (isSecure && this.streamFeatures.hasChild("authentication", Namespace.SASL_2)) {
1439 authenticate(SaslMechanism.Version.SASL_2);
1440 } else if (isSecure && this.streamFeatures.hasChild("mechanisms", Namespace.SASL)) {
1441 authenticate(SaslMechanism.Version.SASL);
1442 } else {
1443 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1444 }
1445 }
1446
1447 private boolean isSecure() {
1448 return features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
1449 }
1450
1451 private void authenticate(final SaslMechanism.Version version) throws IOException {
1452 final Element authElement;
1453 if (version == SaslMechanism.Version.SASL) {
1454 authElement = this.streamFeatures.findChild("mechanisms", Namespace.SASL);
1455 } else {
1456 authElement = this.streamFeatures.findChild("authentication", Namespace.SASL_2);
1457 }
1458 final Collection<String> mechanisms = SaslMechanism.mechanisms(authElement);
1459 final Element cbElement =
1460 this.streamFeatures.findChild("sasl-channel-binding", Namespace.CHANNEL_BINDING);
1461 final Collection<ChannelBinding> channelBindings = ChannelBinding.of(cbElement);
1462 final SaslMechanism.Factory factory = new SaslMechanism.Factory(account);
1463 final SaslMechanism saslMechanism = factory.of(mechanisms, channelBindings, version, SSLSockets.version(this.socket));
1464 this.validate(saslMechanism, mechanisms);
1465 final boolean quickStartAvailable;
1466 final String firstMessage = saslMechanism.getClientFirstMessage(sslSocketOrNull(this.socket));
1467 final boolean usingFast = SaslMechanism.hashedToken(LoginInfo.mechanism(this.loginInfo));
1468 final Element authenticate;
1469 if (version == SaslMechanism.Version.SASL) {
1470 authenticate = new Element("auth", Namespace.SASL);
1471 if (!Strings.isNullOrEmpty(firstMessage)) {
1472 authenticate.setContent(firstMessage);
1473 }
1474 quickStartAvailable = false;
1475 this.loginInfo = new LoginInfo(saslMechanism,version,Collections.emptyList());
1476 } else if (version == SaslMechanism.Version.SASL_2) {
1477 final Element inline = authElement.findChild("inline", Namespace.SASL_2);
1478 final boolean sm = inline != null && inline.hasChild("sm", Namespace.STREAM_MANAGEMENT);
1479 final HashedToken.Mechanism hashTokenRequest;
1480 if (usingFast) {
1481 hashTokenRequest = null;
1482 } else {
1483 final Element fast = inline == null ? null : inline.findChild("fast", Namespace.FAST);
1484 final Collection<String> fastMechanisms = SaslMechanism.mechanisms(fast);
1485 hashTokenRequest =
1486 HashedToken.Mechanism.best(fastMechanisms, SSLSockets.version(this.socket));
1487 }
1488 final Collection<String> bindFeatures = Bind2.features(inline);
1489 quickStartAvailable =
1490 sm
1491 && bindFeatures != null
1492 && bindFeatures.containsAll(Bind2.QUICKSTART_FEATURES);
1493 if (bindFeatures != null) {
1494 try {
1495 mXmppConnectionService.restoredFromDatabaseLatch.await();
1496 } catch (final InterruptedException e) {
1497 Log.d(
1498 Config.LOGTAG,
1499 account.getJid().asBareJid()
1500 + ": interrupted while waiting for DB restore during SASL2 bind");
1501 return;
1502 }
1503 }
1504 this.loginInfo = new LoginInfo(saslMechanism,version,bindFeatures);
1505 this.hashTokenRequest = hashTokenRequest;
1506 authenticate = generateAuthenticationRequest(firstMessage, usingFast, hashTokenRequest, bindFeatures, sm);
1507 } else {
1508 throw new AssertionError("Missing implementation for " + version);
1509 }
1510
1511 if (account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, quickStartAvailable)) {
1512 mXmppConnectionService.databaseBackend.updateAccount(account);
1513 }
1514
1515 Log.d(
1516 Config.LOGTAG,
1517 account.getJid().toString()
1518 + ": Authenticating with "
1519 + version
1520 + "/"
1521 + LoginInfo.mechanism(this.loginInfo).getMechanism());
1522 authenticate.setAttribute("mechanism", LoginInfo.mechanism(this.loginInfo).getMechanism());
1523 synchronized (this.mStanzaQueue) {
1524 this.stanzasSentBeforeAuthentication = this.stanzasSent;
1525 tagWriter.writeElement(authenticate);
1526 }
1527 }
1528
1529 private static boolean isFastTokenAvailable(final Element authentication) {
1530 final Element inline = authentication == null ? null : authentication.findChild("inline");
1531 return inline != null && inline.hasChild("fast", Namespace.FAST);
1532 }
1533
1534 private void validate(final @Nullable SaslMechanism saslMechanism, Collection<String> mechanisms) throws StateChangingException {
1535 if (saslMechanism == null) {
1536 Log.d(
1537 Config.LOGTAG,
1538 account.getJid().asBareJid()
1539 + ": unable to find supported SASL mechanism in "
1540 + mechanisms);
1541 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1542 }
1543 if (SaslMechanism.hashedToken(saslMechanism)) {
1544 return;
1545 }
1546 final int pinnedMechanism = account.getPinnedMechanismPriority();
1547 if (pinnedMechanism > saslMechanism.getPriority()) {
1548 Log.e(
1549 Config.LOGTAG,
1550 "Auth failed. Authentication mechanism "
1551 + saslMechanism.getMechanism()
1552 + " has lower priority ("
1553 + saslMechanism.getPriority()
1554 + ") than pinned priority ("
1555 + pinnedMechanism
1556 + "). Possible downgrade attack?");
1557 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
1558 }
1559 }
1560
1561 private Element generateAuthenticationRequest(final String firstMessage, final boolean usingFast) {
1562 return generateAuthenticationRequest(firstMessage, usingFast, null, Bind2.QUICKSTART_FEATURES, true);
1563 }
1564
1565 private Element generateAuthenticationRequest(
1566 final String firstMessage,
1567 final boolean usingFast,
1568 final HashedToken.Mechanism hashedTokenRequest,
1569 final Collection<String> bind,
1570 final boolean inlineStreamManagement) {
1571 final Element authenticate = new Element("authenticate", Namespace.SASL_2);
1572 if (!Strings.isNullOrEmpty(firstMessage)) {
1573 authenticate.addChild("initial-response").setContent(firstMessage);
1574 }
1575 final Element userAgent = authenticate.addChild("user-agent");
1576 userAgent.setAttribute("id", AccountUtils.publicDeviceId(account));
1577 userAgent
1578 .addChild("software")
1579 .setContent(mXmppConnectionService.getString(R.string.app_name));
1580 if (!PhoneHelper.isEmulator()) {
1581 userAgent
1582 .addChild("device")
1583 .setContent(String.format("%s %s", Build.MANUFACTURER, Build.MODEL));
1584 }
1585 // do not include bind if 'inlineStreamManagement' is missing and we have a streamId
1586 // (because we would rather just do a normal SM/resume)
1587 final boolean mayAttemptBind = streamId == null || inlineStreamManagement;
1588 if (bind != null && mayAttemptBind) {
1589 authenticate.addChild(generateBindRequest(bind));
1590 }
1591 if (inlineStreamManagement && streamId != null) {
1592 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived);
1593 this.mSmCatchupMessageCounter.set(0);
1594 this.mWaitingForSmCatchup.set(true);
1595 authenticate.addChild(resume);
1596 }
1597 if (hashedTokenRequest != null) {
1598 authenticate
1599 .addChild("request-token", Namespace.FAST)
1600 .setAttribute("mechanism", hashedTokenRequest.name());
1601 }
1602 if (usingFast) {
1603 authenticate.addChild("fast", Namespace.FAST);
1604 }
1605 return authenticate;
1606 }
1607
1608 private Element generateBindRequest(final Collection<String> bindFeatures) {
1609 Log.d(Config.LOGTAG, "inline bind features: " + bindFeatures);
1610 final Element bind = new Element("bind", Namespace.BIND2);
1611 bind.addChild("tag").setContent(mXmppConnectionService.getString(R.string.app_name));
1612 if (bindFeatures.contains(Namespace.CARBONS)) {
1613 bind.addChild("enable", Namespace.CARBONS);
1614 }
1615 if (bindFeatures.contains(Namespace.STREAM_MANAGEMENT)) {
1616 bind.addChild(new EnablePacket());
1617 }
1618 return bind;
1619 }
1620
1621 private void register() {
1622 final String preAuth = account.getKey(Account.KEY_PRE_AUTH_REGISTRATION_TOKEN);
1623 if (preAuth != null && features.invite()) {
1624 final IqPacket preAuthRequest = new IqPacket(IqPacket.TYPE.SET);
1625 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
1626 sendUnmodifiedIqPacket(
1627 preAuthRequest,
1628 (account, response) -> {
1629 if (response.getType() == IqPacket.TYPE.RESULT) {
1630 sendRegistryRequest();
1631 } else {
1632 final String error = response.getErrorCondition();
1633 Log.d(
1634 Config.LOGTAG,
1635 account.getJid().asBareJid()
1636 + ": failed to pre auth. "
1637 + error);
1638 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
1639 }
1640 },
1641 true);
1642 } else {
1643 sendRegistryRequest();
1644 }
1645 }
1646
1647 private void sendRegistryRequest() {
1648 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
1649 register.query(Namespace.REGISTER);
1650 register.setTo(account.getDomain());
1651 sendUnmodifiedIqPacket(
1652 register,
1653 (account, packet) -> {
1654 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1655 return;
1656 }
1657 if (packet.getType() == IqPacket.TYPE.ERROR) {
1658 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1659 }
1660 final Element query = packet.query(Namespace.REGISTER);
1661 if (query.hasChild("username") && (query.hasChild("password"))) {
1662 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
1663 final Element username =
1664 new Element("username").setContent(account.getUsername());
1665 final Element password =
1666 new Element("password").setContent(account.getPassword());
1667 register1.query(Namespace.REGISTER).addChild(username);
1668 register1.query().addChild(password);
1669 register1.setFrom(account.getJid().asBareJid());
1670 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
1671 } else if (query.hasChild("x", Namespace.DATA)) {
1672 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
1673 final Element blob = query.findChild("data", "urn:xmpp:bob");
1674 final String id = packet.getId();
1675 InputStream is;
1676 if (blob != null) {
1677 try {
1678 final String base64Blob = blob.getContent();
1679 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
1680 is = new ByteArrayInputStream(strBlob);
1681 } catch (Exception e) {
1682 is = null;
1683 }
1684 } else {
1685 final boolean useTor =
1686 mXmppConnectionService.useTorToConnect() || account.isOnion();
1687 try {
1688 final String url = data.getValue("url");
1689 final String fallbackUrl = data.getValue("captcha-fallback-url");
1690 if (url != null) {
1691 is = HttpConnectionManager.open(url, useTor);
1692 } else if (fallbackUrl != null) {
1693 is = HttpConnectionManager.open(fallbackUrl, useTor);
1694 } else {
1695 is = null;
1696 }
1697 } catch (final IOException e) {
1698 Log.d(
1699 Config.LOGTAG,
1700 account.getJid().asBareJid() + ": unable to fetch captcha",
1701 e);
1702 is = null;
1703 }
1704 }
1705
1706 if (is != null) {
1707 Bitmap captcha = BitmapFactory.decodeStream(is);
1708 try {
1709 if (mXmppConnectionService.displayCaptchaRequest(
1710 account, id, data, captcha)) {
1711 return;
1712 }
1713 } catch (Exception e) {
1714 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1715 }
1716 }
1717 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1718 } else if (query.hasChild("instructions")
1719 || query.hasChild("x", Namespace.OOB)) {
1720 final String instructions = query.findChildContent("instructions");
1721 final Element oob = query.findChild("x", Namespace.OOB);
1722 final String url = oob == null ? null : oob.findChildContent("url");
1723 if (url != null) {
1724 setAccountCreationFailed(url);
1725 } else if (instructions != null) {
1726 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
1727 if (matcher.find()) {
1728 setAccountCreationFailed(
1729 instructions.substring(matcher.start(), matcher.end()));
1730 }
1731 }
1732 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1733 }
1734 },
1735 true);
1736 }
1737
1738 private void setAccountCreationFailed(final String url) {
1739 final HttpUrl httpUrl = url == null ? null : HttpUrl.parse(url);
1740 if (httpUrl != null && httpUrl.isHttps()) {
1741 this.redirectionUrl = httpUrl;
1742 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1743 }
1744 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1745 }
1746
1747 public HttpUrl getRedirectionUrl() {
1748 return this.redirectionUrl;
1749 }
1750
1751 public void resetEverything() {
1752 resetAttemptCount(true);
1753 resetStreamId();
1754 clearIqCallbacks();
1755 this.stanzasSent = 0;
1756 mStanzaQueue.clear();
1757 this.redirectionUrl = null;
1758 synchronized (this.disco) {
1759 disco.clear();
1760 }
1761 synchronized (this.commands) {
1762 this.commands.clear();
1763 }
1764 this.loginInfo = null;
1765 }
1766
1767 private void sendBindRequest() {
1768 try {
1769 mXmppConnectionService.restoredFromDatabaseLatch.await();
1770 } catch (InterruptedException e) {
1771 Log.d(
1772 Config.LOGTAG,
1773 account.getJid().asBareJid()
1774 + ": interrupted while waiting for DB restore during bind");
1775 return;
1776 }
1777 clearIqCallbacks();
1778 if (account.getJid().isBareJid()) {
1779 account.setResource(this.createNewResource());
1780 } else {
1781 fixResource(mXmppConnectionService, account);
1782 }
1783 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1784 final String resource =
1785 Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1786 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1787 this.sendUnmodifiedIqPacket(
1788 iq,
1789 (account, packet) -> {
1790 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1791 return;
1792 }
1793 final Element bind = packet.findChild("bind");
1794 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1795 isBound = true;
1796 final Element jid = bind.findChild("jid");
1797 if (jid != null && jid.getContent() != null) {
1798 try {
1799 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1800 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1801 Log.d(
1802 Config.LOGTAG,
1803 account.getJid().asBareJid()
1804 + ": server tried to re-assign domain to "
1805 + assignedJid.getDomain());
1806 throw new StateChangingError(Account.State.BIND_FAILURE);
1807 }
1808 if (account.setJid(assignedJid)) {
1809 Log.d(
1810 Config.LOGTAG,
1811 account.getJid().asBareJid()
1812 + ": jid changed during bind. updating database");
1813 mXmppConnectionService.databaseBackend.updateAccount(account);
1814 }
1815 if (streamFeatures.hasChild("session")
1816 && !streamFeatures
1817 .findChild("session")
1818 .hasChild("optional")) {
1819 sendStartSession();
1820 } else {
1821 final boolean waitForDisco = enableStreamManagement();
1822 sendPostBindInitialization(waitForDisco, false);
1823 }
1824 return;
1825 } catch (final IllegalArgumentException e) {
1826 Log.d(
1827 Config.LOGTAG,
1828 account.getJid().asBareJid()
1829 + ": server reported invalid jid ("
1830 + jid.getContent()
1831 + ") on bind");
1832 }
1833 } else {
1834 Log.d(
1835 Config.LOGTAG,
1836 account.getJid()
1837 + ": disconnecting because of bind failure. (no jid)");
1838 }
1839 } else {
1840 Log.d(
1841 Config.LOGTAG,
1842 account.getJid()
1843 + ": disconnecting because of bind failure ("
1844 + packet);
1845 }
1846 final Element error = packet.findChild("error");
1847 if (packet.getType() == IqPacket.TYPE.ERROR
1848 && error != null
1849 && error.hasChild("conflict")) {
1850 account.setResource(createNewResource());
1851 }
1852 throw new StateChangingError(Account.State.BIND_FAILURE);
1853 },
1854 true);
1855 }
1856
1857 private void clearIqCallbacks() {
1858 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1859 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1860 synchronized (this.packetCallbacks) {
1861 if (this.packetCallbacks.size() == 0) {
1862 return;
1863 }
1864 Log.d(
1865 Config.LOGTAG,
1866 account.getJid().asBareJid()
1867 + ": clearing "
1868 + this.packetCallbacks.size()
1869 + " iq callbacks");
1870 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator =
1871 this.packetCallbacks.values().iterator();
1872 while (iterator.hasNext()) {
1873 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1874 callbacks.add(entry.second);
1875 iterator.remove();
1876 }
1877 }
1878 for (OnIqPacketReceived callback : callbacks) {
1879 try {
1880 callback.onIqPacketReceived(account, failurePacket);
1881 } catch (StateChangingError error) {
1882 Log.d(
1883 Config.LOGTAG,
1884 account.getJid().asBareJid()
1885 + ": caught StateChangingError("
1886 + error.state.toString()
1887 + ") while clearing callbacks");
1888 // ignore
1889 }
1890 }
1891 Log.d(
1892 Config.LOGTAG,
1893 account.getJid().asBareJid()
1894 + ": done clearing iq callbacks. "
1895 + this.packetCallbacks.size()
1896 + " left");
1897 }
1898
1899 public void sendDiscoTimeout() {
1900 if (mWaitForDisco.compareAndSet(true, false)) {
1901 Log.d(
1902 Config.LOGTAG,
1903 account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1904 finalizeBind();
1905 }
1906 }
1907
1908 private void sendStartSession() {
1909 Log.d(
1910 Config.LOGTAG,
1911 account.getJid().asBareJid() + ": sending legacy session to outdated server");
1912 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1913 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1914 this.sendUnmodifiedIqPacket(
1915 startSession,
1916 (account, packet) -> {
1917 if (packet.getType() == IqPacket.TYPE.RESULT) {
1918 final boolean waitForDisco = enableStreamManagement();
1919 sendPostBindInitialization(waitForDisco, false);
1920 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1921 throw new StateChangingError(Account.State.SESSION_FAILURE);
1922 }
1923 },
1924 true);
1925 }
1926
1927 private boolean enableStreamManagement() {
1928 final boolean streamManagement =
1929 this.streamFeatures.hasChild("sm", Namespace.STREAM_MANAGEMENT);
1930 if (streamManagement) {
1931 synchronized (this.mStanzaQueue) {
1932 final EnablePacket enable = new EnablePacket();
1933 tagWriter.writeStanzaAsync(enable);
1934 stanzasSent = 0;
1935 mStanzaQueue.clear();
1936 }
1937 return true;
1938 } else {
1939 return false;
1940 }
1941 }
1942
1943 private void sendPostBindInitialization(
1944 final boolean waitForDisco, final boolean carbonsEnabled) {
1945 features.carbonsEnabled = carbonsEnabled;
1946 features.blockListRequested = false;
1947 synchronized (this.disco) {
1948 this.disco.clear();
1949 }
1950 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1951 mPendingServiceDiscoveries.set(0);
1952 mWaitForDisco.set(waitForDisco);
1953 lastDiscoStarted = SystemClock.elapsedRealtime();
1954 mXmppConnectionService.scheduleWakeUpCall(
1955 Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1956 final Element caps = streamFeatures.findChild("c");
1957 final String hash = caps == null ? null : caps.getAttribute("hash");
1958 final String ver = caps == null ? null : caps.getAttribute("ver");
1959 ServiceDiscoveryResult discoveryResult = null;
1960 if (hash != null && ver != null) {
1961 discoveryResult =
1962 mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1963 }
1964 final boolean requestDiscoItemsFirst =
1965 !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1966 if (requestDiscoItemsFirst) {
1967 sendServiceDiscoveryItems(account.getDomain());
1968 }
1969 if (discoveryResult == null) {
1970 sendServiceDiscoveryInfo(account.getDomain());
1971 } else {
1972 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1973 disco.put(account.getDomain(), discoveryResult);
1974 }
1975 discoverMamPreferences();
1976 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1977 if (!requestDiscoItemsFirst) {
1978 sendServiceDiscoveryItems(account.getDomain());
1979 }
1980
1981 if (!mWaitForDisco.get()) {
1982 finalizeBind();
1983 }
1984 this.lastSessionStarted = SystemClock.elapsedRealtime();
1985 }
1986
1987 private void sendServiceDiscoveryInfo(final Jid jid) {
1988 mPendingServiceDiscoveries.incrementAndGet();
1989 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1990 iq.setTo(jid);
1991 iq.query("http://jabber.org/protocol/disco#info");
1992 this.sendIqPacket(
1993 iq,
1994 (account, packet) -> {
1995 if (packet.getType() == IqPacket.TYPE.RESULT) {
1996 boolean advancedStreamFeaturesLoaded;
1997 synchronized (XmppConnection.this.disco) {
1998 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1999 if (jid.equals(account.getDomain())) {
2000 mXmppConnectionService.databaseBackend.insertDiscoveryResult(
2001 result);
2002 }
2003 disco.put(jid, result);
2004 advancedStreamFeaturesLoaded =
2005 disco.containsKey(account.getDomain())
2006 && disco.containsKey(account.getJid().asBareJid());
2007 }
2008 if (advancedStreamFeaturesLoaded
2009 && (jid.equals(account.getDomain())
2010 || jid.equals(account.getJid().asBareJid()))) {
2011 enableAdvancedStreamFeatures();
2012 }
2013 } else if (packet.getType() == IqPacket.TYPE.ERROR) {
2014 Log.d(
2015 Config.LOGTAG,
2016 account.getJid().asBareJid()
2017 + ": could not query disco info for "
2018 + jid.toString());
2019 final boolean serverOrAccount =
2020 jid.equals(account.getDomain())
2021 || jid.equals(account.getJid().asBareJid());
2022 final boolean advancedStreamFeaturesLoaded;
2023 if (serverOrAccount) {
2024 synchronized (XmppConnection.this.disco) {
2025 disco.put(jid, ServiceDiscoveryResult.empty());
2026 advancedStreamFeaturesLoaded =
2027 disco.containsKey(account.getDomain())
2028 && disco.containsKey(account.getJid().asBareJid());
2029 }
2030 } else {
2031 advancedStreamFeaturesLoaded = false;
2032 }
2033 if (advancedStreamFeaturesLoaded) {
2034 enableAdvancedStreamFeatures();
2035 }
2036 }
2037 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
2038 if (mPendingServiceDiscoveries.decrementAndGet() == 0
2039 && mWaitForDisco.compareAndSet(true, false)) {
2040 finalizeBind();
2041 }
2042 }
2043 });
2044 }
2045
2046 private void discoverMamPreferences() {
2047 IqPacket request = new IqPacket(IqPacket.TYPE.GET);
2048 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
2049 sendIqPacket(
2050 request,
2051 (account, response) -> {
2052 if (response.getType() == IqPacket.TYPE.RESULT) {
2053 Element prefs =
2054 response.findChild(
2055 "prefs", MessageArchiveService.Version.MAM_2.namespace);
2056 isMamPreferenceAlways =
2057 "always"
2058 .equals(
2059 prefs == null
2060 ? null
2061 : prefs.getAttribute("default"));
2062 }
2063 });
2064 }
2065
2066 private void discoverCommands() {
2067 final IqPacket request = new IqPacket(IqPacket.TYPE.GET);
2068 request.setTo(account.getDomain());
2069 request.addChild("query", Namespace.DISCO_ITEMS).setAttribute("node", Namespace.COMMANDS);
2070 sendIqPacket(
2071 request,
2072 (account, response) -> {
2073 if (response.getType() == IqPacket.TYPE.RESULT) {
2074 final Element query = response.findChild("query", Namespace.DISCO_ITEMS);
2075 if (query == null) {
2076 return;
2077 }
2078 final HashMap<String, Jid> commands = new HashMap<>();
2079 for (final Element child : query.getChildren()) {
2080 if ("item".equals(child.getName())) {
2081 final String node = child.getAttribute("node");
2082 final Jid jid = child.getAttributeAsJid("jid");
2083 if (node != null && jid != null) {
2084 commands.put(node, jid);
2085 }
2086 }
2087 }
2088 synchronized (this.commands) {
2089 this.commands.clear();
2090 this.commands.putAll(commands);
2091 }
2092 }
2093 });
2094 }
2095
2096 public boolean isMamPreferenceAlways() {
2097 return isMamPreferenceAlways;
2098 }
2099
2100 private void finalizeBind() {
2101 if (bindListener != null) {
2102 bindListener.onBind(account);
2103 }
2104 changeStatusToOnline();
2105 }
2106
2107 private void enableAdvancedStreamFeatures() {
2108 if (getFeatures().blocking() && !features.blockListRequested) {
2109 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
2110 this.sendIqPacket(
2111 getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
2112 }
2113 for (final OnAdvancedStreamFeaturesLoaded listener :
2114 advancedStreamFeaturesLoadedListeners) {
2115 listener.onAdvancedStreamFeaturesAvailable(account);
2116 }
2117 if (getFeatures().carbons() && !features.carbonsEnabled) {
2118 sendEnableCarbons();
2119 }
2120 if (getFeatures().commands()) {
2121 discoverCommands();
2122 }
2123 }
2124
2125 private void sendServiceDiscoveryItems(final Jid server) {
2126 mPendingServiceDiscoveries.incrementAndGet();
2127 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
2128 iq.setTo(server.getDomain());
2129 iq.query("http://jabber.org/protocol/disco#items");
2130 this.sendIqPacket(
2131 iq,
2132 (account, packet) -> {
2133 if (packet.getType() == IqPacket.TYPE.RESULT) {
2134 final HashSet<Jid> items = new HashSet<>();
2135 final List<Element> elements = packet.query().getChildren();
2136 for (final Element element : elements) {
2137 if (element.getName().equals("item")) {
2138 final Jid jid =
2139 InvalidJid.getNullForInvalid(
2140 element.getAttributeAsJid("jid"));
2141 if (jid != null && !jid.equals(account.getDomain())) {
2142 items.add(jid);
2143 }
2144 }
2145 }
2146 for (Jid jid : items) {
2147 sendServiceDiscoveryInfo(jid);
2148 }
2149 } else {
2150 Log.d(
2151 Config.LOGTAG,
2152 account.getJid().asBareJid()
2153 + ": could not query disco items of "
2154 + server);
2155 }
2156 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
2157 if (mPendingServiceDiscoveries.decrementAndGet() == 0
2158 && mWaitForDisco.compareAndSet(true, false)) {
2159 finalizeBind();
2160 }
2161 }
2162 });
2163 }
2164
2165 private void sendEnableCarbons() {
2166 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
2167 iq.addChild("enable", Namespace.CARBONS);
2168 this.sendIqPacket(
2169 iq,
2170 (account, packet) -> {
2171 if (packet.getType() == IqPacket.TYPE.RESULT) {
2172 Log.d(
2173 Config.LOGTAG,
2174 account.getJid().asBareJid() + ": successfully enabled carbons");
2175 features.carbonsEnabled = true;
2176 } else {
2177 Log.d(
2178 Config.LOGTAG,
2179 account.getJid().asBareJid()
2180 + ": could not enable carbons "
2181 + packet);
2182 }
2183 });
2184 }
2185
2186 private void processStreamError(final Tag currentTag) throws IOException {
2187 final Element streamError = tagReader.readElement(currentTag);
2188 if (streamError == null) {
2189 return;
2190 }
2191 if (streamError.hasChild("conflict")) {
2192 account.setResource(createNewResource());
2193 Log.d(
2194 Config.LOGTAG,
2195 account.getJid().asBareJid()
2196 + ": switching resource due to conflict ("
2197 + account.getResource()
2198 + ")");
2199 throw new IOException();
2200 } else if (streamError.hasChild("host-unknown")) {
2201 throw new StateChangingException(Account.State.HOST_UNKNOWN);
2202 } else if (streamError.hasChild("policy-violation")) {
2203 this.lastConnect = SystemClock.elapsedRealtime();
2204 final String text = streamError.findChildContent("text");
2205 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": policy violation. " + text);
2206 failPendingMessages(text);
2207 throw new StateChangingException(Account.State.POLICY_VIOLATION);
2208 } else if (streamError.hasChild("see-other-host")) {
2209 final String seeOtherHost = streamError.findChildContent("see-other-host");
2210 final Resolver.Result currentResolverResult = this.currentResolverResult;
2211 if (Strings.isNullOrEmpty(seeOtherHost) || currentResolverResult == null) {
2212 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError);
2213 throw new StateChangingException(Account.State.STREAM_ERROR);
2214 }
2215 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": see other host: "+seeOtherHost+" "+currentResolverResult);
2216 final Resolver.Result seeOtherResult = currentResolverResult.seeOtherHost(seeOtherHost);
2217 if (seeOtherResult != null) {
2218 this.seeOtherHostResolverResult = seeOtherResult;
2219 throw new StateChangingException(Account.State.SEE_OTHER_HOST);
2220 } else {
2221 throw new StateChangingException(Account.State.STREAM_ERROR);
2222 }
2223 } else {
2224 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError);
2225 throw new StateChangingException(Account.State.STREAM_ERROR);
2226 }
2227 }
2228
2229 private void failPendingMessages(final String error) {
2230 synchronized (this.mStanzaQueue) {
2231 for (int i = 0; i < mStanzaQueue.size(); ++i) {
2232 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
2233 if (stanza instanceof MessagePacket) {
2234 final MessagePacket packet = (MessagePacket) stanza;
2235 final String id = packet.getId();
2236 final Jid to = packet.getTo();
2237 mXmppConnectionService.markMessage(
2238 account, to.asBareJid(), id, Message.STATUS_SEND_FAILED, error);
2239 }
2240 }
2241 }
2242 }
2243
2244 private boolean establishStream(final SSLSockets.Version sslVersion)
2245 throws IOException, InterruptedException {
2246 final boolean secureConnection = sslVersion != SSLSockets.Version.NONE;
2247 final SaslMechanism quickStartMechanism;
2248 if (secureConnection) {
2249 quickStartMechanism = SaslMechanism.ensureAvailable(account.getQuickStartMechanism(), sslVersion);
2250 } else {
2251 quickStartMechanism = null;
2252 }
2253 if (secureConnection
2254 && Config.QUICKSTART_ENABLED
2255 && quickStartMechanism != null
2256 && account.isOptionSet(Account.OPTION_QUICKSTART_AVAILABLE)) {
2257 mXmppConnectionService.restoredFromDatabaseLatch.await();
2258 this.loginInfo = new LoginInfo(quickStartMechanism, SaslMechanism.Version.SASL_2, Bind2.QUICKSTART_FEATURES);
2259 final boolean usingFast = quickStartMechanism instanceof HashedToken;
2260 final Element authenticate =
2261 generateAuthenticationRequest(quickStartMechanism.getClientFirstMessage(sslSocketOrNull(this.socket)), usingFast);
2262 authenticate.setAttribute("mechanism", quickStartMechanism.getMechanism());
2263 sendStartStream(true, false);
2264 synchronized (this.mStanzaQueue) {
2265 this.stanzasSentBeforeAuthentication = this.stanzasSent;
2266 tagWriter.writeElement(authenticate);
2267 }
2268 Log.d(
2269 Config.LOGTAG,
2270 account.getJid().toString()
2271 + ": quick start with "
2272 + quickStartMechanism.getMechanism());
2273 return true;
2274 } else {
2275 sendStartStream(secureConnection, true);
2276 return false;
2277 }
2278 }
2279
2280 private void sendStartStream(final boolean from, final boolean flush) throws IOException {
2281 final Tag stream = Tag.start("stream:stream");
2282 stream.setAttribute("to", account.getServer());
2283 if (from) {
2284 stream.setAttribute("from", account.getJid().asBareJid().toEscapedString());
2285 }
2286 stream.setAttribute("version", "1.0");
2287 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
2288 stream.setAttribute("xmlns", Namespace.JABBER_CLIENT);
2289 stream.setAttribute("xmlns:stream", Namespace.STREAMS);
2290 tagWriter.writeTag(stream, flush);
2291 }
2292
2293 private String createNewResource() {
2294 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
2295 }
2296
2297 private String nextRandomId() {
2298 return nextRandomId(false);
2299 }
2300
2301 private String nextRandomId(final boolean s) {
2302 return CryptoHelper.random(s ? 3 : 9);
2303 }
2304
2305 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
2306 packet.setFrom(account.getJid());
2307 return this.sendUnmodifiedIqPacket(packet, callback, false);
2308 }
2309
2310 public synchronized String sendUnmodifiedIqPacket(
2311 final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
2312 if (packet.getId() == null) {
2313 packet.setAttribute("id", nextRandomId());
2314 }
2315 if (callback != null) {
2316 synchronized (this.packetCallbacks) {
2317 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
2318 }
2319 }
2320 this.sendPacket(packet, force);
2321 return packet.getId();
2322 }
2323
2324 public void sendMessagePacket(final MessagePacket packet) {
2325 this.sendPacket(packet);
2326 }
2327
2328 public void sendPresencePacket(final PresencePacket packet) {
2329 this.sendPacket(packet);
2330 }
2331
2332 private synchronized void sendPacket(final AbstractStanza packet) {
2333 sendPacket(packet, false);
2334 }
2335
2336 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
2337 if (stanzasSent == Integer.MAX_VALUE) {
2338 resetStreamId();
2339 disconnect(true);
2340 return;
2341 }
2342 synchronized (this.mStanzaQueue) {
2343 if (force || isBound) {
2344 tagWriter.writeStanzaAsync(packet);
2345 } else {
2346 Log.d(
2347 Config.LOGTAG,
2348 account.getJid().asBareJid()
2349 + " do not write stanza to unbound stream "
2350 + packet.toString());
2351 }
2352 if (packet instanceof AbstractAcknowledgeableStanza) {
2353 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
2354
2355 if (this.mStanzaQueue.size() != 0) {
2356 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
2357 if (currentHighestKey != stanzasSent) {
2358 throw new AssertionError("Stanza count messed up");
2359 }
2360 }
2361
2362 ++stanzasSent;
2363 if (Config.EXTENDED_SM_LOGGING) {
2364 Log.d(Config.LOGTAG, account.getJid().asBareJid()+": counting outbound "+packet.getName()+" as #" + stanzasSent);
2365 }
2366 this.mStanzaQueue.append(stanzasSent, stanza);
2367 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
2368 if (Config.EXTENDED_SM_LOGGING) {
2369 Log.d(
2370 Config.LOGTAG,
2371 account.getJid().asBareJid()
2372 + ": requesting ack for message stanza #"
2373 + stanzasSent);
2374 }
2375 tagWriter.writeStanzaAsync(new RequestPacket());
2376 }
2377 }
2378 }
2379 }
2380
2381 public void sendPing() {
2382 if (!r()) {
2383 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
2384 iq.setFrom(account.getJid());
2385 iq.addChild("ping", Namespace.PING);
2386 this.sendIqPacket(iq, null);
2387 }
2388 this.lastPingSent = SystemClock.elapsedRealtime();
2389 }
2390
2391 public void setOnMessagePacketReceivedListener(final OnMessagePacketReceived listener) {
2392 this.messageListener = listener;
2393 }
2394
2395 public void setOnUnregisteredIqPacketReceivedListener(final OnIqPacketReceived listener) {
2396 this.unregisteredIqListener = listener;
2397 }
2398
2399 public void setOnPresencePacketReceivedListener(final OnPresencePacketReceived listener) {
2400 this.presenceListener = listener;
2401 }
2402
2403 public void setOnJinglePacketReceivedListener(final OnJinglePacketReceived listener) {
2404 this.jingleListener = listener;
2405 }
2406
2407 public void setOnStatusChangedListener(final OnStatusChanged listener) {
2408 this.statusListener = listener;
2409 }
2410
2411 public void setOnBindListener(final OnBindListener listener) {
2412 this.bindListener = listener;
2413 }
2414
2415 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
2416 this.acknowledgedListener = listener;
2417 }
2418
2419 public void addOnAdvancedStreamFeaturesAvailableListener(
2420 final OnAdvancedStreamFeaturesLoaded listener) {
2421 this.advancedStreamFeaturesLoadedListeners.add(listener);
2422 }
2423
2424 private void forceCloseSocket() {
2425 FileBackend.close(this.socket);
2426 FileBackend.close(this.tagReader);
2427 }
2428
2429 public void interrupt() {
2430 if (this.mThread != null) {
2431 this.mThread.interrupt();
2432 }
2433 }
2434
2435 public void disconnect(final boolean force) {
2436 interrupt();
2437 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
2438 if (force) {
2439 forceCloseSocket();
2440 } else {
2441 final TagWriter currentTagWriter = this.tagWriter;
2442 if (currentTagWriter.isActive()) {
2443 currentTagWriter.finish();
2444 final Socket currentSocket = this.socket;
2445 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
2446 try {
2447 currentTagWriter.await(1, TimeUnit.SECONDS);
2448 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
2449 currentTagWriter.writeTag(Tag.end("stream:stream"));
2450 if (streamCountDownLatch != null) {
2451 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
2452 Log.d(
2453 Config.LOGTAG,
2454 account.getJid().asBareJid() + ": remote ended stream");
2455 } else {
2456 Log.d(
2457 Config.LOGTAG,
2458 account.getJid().asBareJid()
2459 + ": remote has not closed socket. force closing");
2460 }
2461 }
2462 } catch (InterruptedException e) {
2463 Log.d(
2464 Config.LOGTAG,
2465 account.getJid().asBareJid()
2466 + ": interrupted while gracefully closing stream");
2467 } catch (final IOException e) {
2468 Log.d(
2469 Config.LOGTAG,
2470 account.getJid().asBareJid()
2471 + ": io exception during disconnect ("
2472 + e.getMessage()
2473 + ")");
2474 } finally {
2475 FileBackend.close(currentSocket);
2476 }
2477 } else {
2478 forceCloseSocket();
2479 }
2480 }
2481 }
2482
2483 private void resetStreamId() {
2484 this.streamId = null;
2485 this.boundStreamFeatures = null;
2486 }
2487
2488 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
2489 synchronized (this.disco) {
2490 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
2491 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
2492 if (cursor.getValue().getFeatures().contains(feature)) {
2493 items.add(cursor);
2494 }
2495 }
2496 return items;
2497 }
2498 }
2499
2500 public Jid findDiscoItemByFeature(final String feature) {
2501 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
2502 if (items.size() >= 1) {
2503 return items.get(0).getKey();
2504 }
2505 return null;
2506 }
2507
2508 public boolean r() {
2509 if (getFeatures().sm()) {
2510 this.tagWriter.writeStanzaAsync(new RequestPacket());
2511 return true;
2512 } else {
2513 return false;
2514 }
2515 }
2516
2517 public List<String> getMucServersWithholdAccount() {
2518 final List<String> servers = getMucServers();
2519 servers.remove(account.getDomain().toEscapedString());
2520 return servers;
2521 }
2522
2523 public List<String> getMucServers() {
2524 List<String> servers = new ArrayList<>();
2525 synchronized (this.disco) {
2526 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
2527 final ServiceDiscoveryResult value = cursor.getValue();
2528 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
2529 && value.hasIdentity("conference", "text")
2530 && !value.getFeatures().contains("jabber:iq:gateway")
2531 && !value.hasIdentity("conference", "irc")) {
2532 servers.add(cursor.getKey().toString());
2533 }
2534 }
2535 }
2536 return servers;
2537 }
2538
2539 public String getMucServer() {
2540 List<String> servers = getMucServers();
2541 return servers.size() > 0 ? servers.get(0) : null;
2542 }
2543
2544 public int getTimeToNextAttempt(final boolean aggressive) {
2545 final int interval;
2546 if (aggressive) {
2547 interval = Math.min((int) (3 * Math.pow(1.3,attempt)), 60);
2548 } else {
2549 final int additionalTime =
2550 account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
2551 interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
2552 }
2553 final int secondsSinceLast =
2554 (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
2555 return interval - secondsSinceLast;
2556 }
2557
2558 public int getAttempt() {
2559 return this.attempt;
2560 }
2561
2562 public Features getFeatures() {
2563 return this.features;
2564 }
2565
2566 public long getLastSessionEstablished() {
2567 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
2568 return System.currentTimeMillis() - diff;
2569 }
2570
2571 public long getLastConnect() {
2572 return this.lastConnect;
2573 }
2574
2575 public long getLastPingSent() {
2576 return this.lastPingSent;
2577 }
2578
2579 public long getLastDiscoStarted() {
2580 return this.lastDiscoStarted;
2581 }
2582
2583 public long getLastPacketReceived() {
2584 return this.lastPacketReceived;
2585 }
2586
2587 public void sendActive() {
2588 this.sendPacket(new ActivePacket());
2589 }
2590
2591 public void sendInactive() {
2592 this.sendPacket(new InactivePacket());
2593 }
2594
2595 public void resetAttemptCount(boolean resetConnectTime) {
2596 this.attempt = 0;
2597 if (resetConnectTime) {
2598 this.lastConnect = 0;
2599 }
2600 }
2601
2602 public void setInteractive(boolean interactive) {
2603 this.mInteractive = interactive;
2604 }
2605
2606 private IqGenerator getIqGenerator() {
2607 return mXmppConnectionService.getIqGenerator();
2608 }
2609
2610 private class MyKeyManager implements X509KeyManager {
2611 @Override
2612 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
2613 return account.getPrivateKeyAlias();
2614 }
2615
2616 @Override
2617 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
2618 return null;
2619 }
2620
2621 @Override
2622 public X509Certificate[] getCertificateChain(String alias) {
2623 Log.d(Config.LOGTAG, "getting certificate chain");
2624 try {
2625 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
2626 } catch (final Exception e) {
2627 Log.d(Config.LOGTAG, "could not get certificate chain", e);
2628 return new X509Certificate[0];
2629 }
2630 }
2631
2632 @Override
2633 public String[] getClientAliases(String s, Principal[] principals) {
2634 final String alias = account.getPrivateKeyAlias();
2635 return alias != null ? new String[] {alias} : new String[0];
2636 }
2637
2638 @Override
2639 public String[] getServerAliases(String s, Principal[] principals) {
2640 return new String[0];
2641 }
2642
2643 @Override
2644 public PrivateKey getPrivateKey(String alias) {
2645 try {
2646 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
2647 } catch (Exception e) {
2648 return null;
2649 }
2650 }
2651 }
2652
2653 private static class LoginInfo {
2654 public final SaslMechanism saslMechanism;
2655 public final SaslMechanism.Version saslVersion;
2656 public final List<String> inlineBindFeatures;
2657
2658 private LoginInfo(
2659 final SaslMechanism saslMechanism,
2660 final SaslMechanism.Version saslVersion,
2661 final Collection<String> inlineBindFeatures) {
2662 Preconditions.checkNotNull(saslMechanism, "SASL Mechanism must not be null");
2663 Preconditions.checkNotNull(saslVersion, "SASL version must not be null");
2664 this.saslMechanism = saslMechanism;
2665 this.saslVersion = saslVersion;
2666 this.inlineBindFeatures =
2667 inlineBindFeatures == null
2668 ? Collections.emptyList()
2669 : ImmutableList.copyOf(inlineBindFeatures);
2670 }
2671
2672 public static SaslMechanism mechanism(final LoginInfo loginInfo) {
2673 return loginInfo == null ? null : loginInfo.saslMechanism;
2674 }
2675 }
2676
2677 private static class StateChangingError extends Error {
2678 private final Account.State state;
2679
2680 public StateChangingError(Account.State state) {
2681 this.state = state;
2682 }
2683 }
2684
2685 private static class StateChangingException extends IOException {
2686 private final Account.State state;
2687
2688 public StateChangingException(Account.State state) {
2689 this.state = state;
2690 }
2691 }
2692
2693 public class Features {
2694 XmppConnection connection;
2695 private boolean carbonsEnabled = false;
2696 private boolean encryptionEnabled = false;
2697 private boolean blockListRequested = false;
2698
2699 public Features(final XmppConnection connection) {
2700 this.connection = connection;
2701 }
2702
2703 private boolean hasDiscoFeature(final Jid server, final String feature) {
2704 synchronized (XmppConnection.this.disco) {
2705 final ServiceDiscoveryResult sdr = connection.disco.get(server);
2706 return sdr != null && sdr.getFeatures().contains(feature);
2707 }
2708 }
2709
2710 public boolean carbons() {
2711 return hasDiscoFeature(account.getDomain(), Namespace.CARBONS);
2712 }
2713
2714 public boolean commands() {
2715 return hasDiscoFeature(account.getDomain(), Namespace.COMMANDS);
2716 }
2717
2718 public boolean easyOnboardingInvites() {
2719 synchronized (commands) {
2720 return commands.containsKey(Namespace.EASY_ONBOARDING_INVITE);
2721 }
2722 }
2723
2724 public boolean bookmarksConversion() {
2725 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION)
2726 && pepPublishOptions();
2727 }
2728
2729 public boolean avatarConversion() {
2730 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.AVATAR_CONVERSION)
2731 && pepPublishOptions();
2732 }
2733
2734 public boolean blocking() {
2735 return hasDiscoFeature(account.getDomain(), Namespace.BLOCKING);
2736 }
2737
2738 public boolean spamReporting() {
2739 return hasDiscoFeature(account.getDomain(), Namespace.REPORTING);
2740 }
2741
2742 public boolean flexibleOfflineMessageRetrieval() {
2743 return hasDiscoFeature(
2744 account.getDomain(), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
2745 }
2746
2747 public boolean register() {
2748 return hasDiscoFeature(account.getDomain(), Namespace.REGISTER);
2749 }
2750
2751 public boolean invite() {
2752 return connection.streamFeatures != null
2753 && connection.streamFeatures.hasChild("register", Namespace.INVITE);
2754 }
2755
2756 public boolean sm() {
2757 return streamId != null
2758 || (connection.streamFeatures != null
2759 && connection.streamFeatures.hasChild("sm", Namespace.STREAM_MANAGEMENT));
2760 }
2761
2762 public boolean csi() {
2763 return connection.streamFeatures != null
2764 && connection.streamFeatures.hasChild("csi", Namespace.CSI);
2765 }
2766
2767 public boolean pep() {
2768 synchronized (XmppConnection.this.disco) {
2769 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
2770 return info != null && info.hasIdentity("pubsub", "pep");
2771 }
2772 }
2773
2774 public boolean pepPersistent() {
2775 synchronized (XmppConnection.this.disco) {
2776 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
2777 return info != null
2778 && info.getFeatures()
2779 .contains("http://jabber.org/protocol/pubsub#persistent-items");
2780 }
2781 }
2782
2783 public boolean pepPublishOptions() {
2784 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
2785 }
2786
2787 public boolean pepOmemoWhitelisted() {
2788 return hasDiscoFeature(
2789 account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
2790 }
2791
2792 public boolean mam() {
2793 return MessageArchiveService.Version.has(getAccountFeatures());
2794 }
2795
2796 public List<String> getAccountFeatures() {
2797 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
2798 return result == null ? Collections.emptyList() : result.getFeatures();
2799 }
2800
2801 public boolean push() {
2802 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
2803 || hasDiscoFeature(account.getDomain(), Namespace.PUSH);
2804 }
2805
2806 public boolean rosterVersioning() {
2807 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
2808 }
2809
2810 public void setBlockListRequested(boolean value) {
2811 this.blockListRequested = value;
2812 }
2813
2814 public boolean httpUpload(long filesize) {
2815 if (Config.DISABLE_HTTP_UPLOAD) {
2816 return false;
2817 } else {
2818 for (String namespace :
2819 new String[] {Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
2820 List<Entry<Jid, ServiceDiscoveryResult>> items =
2821 findDiscoItemsByFeature(namespace);
2822 if (items.size() > 0) {
2823 try {
2824 long maxsize =
2825 Long.parseLong(
2826 items.get(0)
2827 .getValue()
2828 .getExtendedDiscoInformation(
2829 namespace, "max-file-size"));
2830 if (filesize <= maxsize) {
2831 return true;
2832 } else {
2833 Log.d(
2834 Config.LOGTAG,
2835 account.getJid().asBareJid()
2836 + ": http upload is not available for files with size "
2837 + filesize
2838 + " (max is "
2839 + maxsize
2840 + ")");
2841 return false;
2842 }
2843 } catch (Exception e) {
2844 return true;
2845 }
2846 }
2847 }
2848 return false;
2849 }
2850 }
2851
2852 public boolean useLegacyHttpUpload() {
2853 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null
2854 && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
2855 }
2856
2857 public long getMaxHttpUploadSize() {
2858 for (String namespace :
2859 new String[] {Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
2860 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
2861 if (items.size() > 0) {
2862 try {
2863 return Long.parseLong(
2864 items.get(0)
2865 .getValue()
2866 .getExtendedDiscoInformation(namespace, "max-file-size"));
2867 } catch (Exception e) {
2868 // ignored
2869 }
2870 }
2871 }
2872 return -1;
2873 }
2874
2875 public boolean stanzaIds() {
2876 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
2877 }
2878
2879 public boolean bookmarks2() {
2880 return pepPublishOptions() && hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS2_COMPAT);
2881 }
2882
2883 public boolean externalServiceDiscovery() {
2884 return hasDiscoFeature(account.getDomain(), Namespace.EXTERNAL_SERVICE_DISCOVERY);
2885 }
2886 }
2887}