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.Strings;
20
21import org.xmlpull.v1.XmlPullParserException;
22
23import java.io.ByteArrayInputStream;
24import java.io.IOException;
25import java.io.InputStream;
26import java.net.ConnectException;
27import java.net.IDN;
28import java.net.InetAddress;
29import java.net.InetSocketAddress;
30import java.net.Socket;
31import java.net.UnknownHostException;
32import java.security.KeyManagementException;
33import java.security.NoSuchAlgorithmException;
34import java.security.Principal;
35import java.security.PrivateKey;
36import java.security.cert.X509Certificate;
37import java.util.ArrayList;
38import java.util.Arrays;
39import java.util.Collection;
40import java.util.Collections;
41import java.util.HashMap;
42import java.util.HashSet;
43import java.util.Hashtable;
44import java.util.Iterator;
45import java.util.List;
46import java.util.Map.Entry;
47import java.util.Set;
48import java.util.concurrent.CountDownLatch;
49import java.util.concurrent.TimeUnit;
50import java.util.concurrent.atomic.AtomicBoolean;
51import java.util.concurrent.atomic.AtomicInteger;
52import java.util.regex.Matcher;
53
54import javax.net.ssl.KeyManager;
55import javax.net.ssl.SSLContext;
56import javax.net.ssl.SSLPeerUnverifiedException;
57import javax.net.ssl.SSLSocket;
58import javax.net.ssl.SSLSocketFactory;
59import javax.net.ssl.X509KeyManager;
60import javax.net.ssl.X509TrustManager;
61
62import eu.siacs.conversations.Config;
63import eu.siacs.conversations.R;
64import eu.siacs.conversations.crypto.XmppDomainVerifier;
65import eu.siacs.conversations.crypto.axolotl.AxolotlService;
66import eu.siacs.conversations.crypto.sasl.ChannelBinding;
67import eu.siacs.conversations.crypto.sasl.HashedToken;
68import eu.siacs.conversations.crypto.sasl.SaslMechanism;
69import eu.siacs.conversations.entities.Account;
70import eu.siacs.conversations.entities.Message;
71import eu.siacs.conversations.entities.ServiceDiscoveryResult;
72import eu.siacs.conversations.generator.IqGenerator;
73import eu.siacs.conversations.http.HttpConnectionManager;
74import eu.siacs.conversations.persistance.FileBackend;
75import eu.siacs.conversations.services.MemorizingTrustManager;
76import eu.siacs.conversations.services.MessageArchiveService;
77import eu.siacs.conversations.services.NotificationService;
78import eu.siacs.conversations.services.XmppConnectionService;
79import eu.siacs.conversations.utils.CryptoHelper;
80import eu.siacs.conversations.utils.Patterns;
81import eu.siacs.conversations.utils.PhoneHelper;
82import eu.siacs.conversations.utils.Resolver;
83import eu.siacs.conversations.utils.SSLSockets;
84import eu.siacs.conversations.utils.SocksSocketFactory;
85import eu.siacs.conversations.utils.XmlHelper;
86import eu.siacs.conversations.xml.Element;
87import eu.siacs.conversations.xml.LocalizedContent;
88import eu.siacs.conversations.xml.Namespace;
89import eu.siacs.conversations.xml.Tag;
90import eu.siacs.conversations.xml.TagWriter;
91import eu.siacs.conversations.xml.XmlReader;
92import eu.siacs.conversations.xmpp.bind.Bind2;
93import eu.siacs.conversations.xmpp.forms.Data;
94import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
95import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
96import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
97import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
98import eu.siacs.conversations.xmpp.stanzas.IqPacket;
99import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
100import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
101import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
102import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
103import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
104import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
105import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
106import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
107import okhttp3.HttpUrl;
108
109public class XmppConnection implements Runnable {
110
111 private static final int PACKET_IQ = 0;
112 private static final int PACKET_MESSAGE = 1;
113 private static final int PACKET_PRESENCE = 2;
114 public final OnIqPacketReceived registrationResponseListener =
115 (account, packet) -> {
116 if (packet.getType() == IqPacket.TYPE.RESULT) {
117 account.setOption(Account.OPTION_REGISTER, false);
118 Log.d(
119 Config.LOGTAG,
120 account.getJid().asBareJid()
121 + ": successfully registered new account on server");
122 throw new StateChangingError(Account.State.REGISTRATION_SUCCESSFUL);
123 } else {
124 final List<String> PASSWORD_TOO_WEAK_MSGS =
125 Arrays.asList(
126 "The password is too weak", "Please use a longer password.");
127 Element error = packet.findChild("error");
128 Account.State state = Account.State.REGISTRATION_FAILED;
129 if (error != null) {
130 if (error.hasChild("conflict")) {
131 state = Account.State.REGISTRATION_CONFLICT;
132 } else if (error.hasChild("resource-constraint")
133 && "wait".equals(error.getAttribute("type"))) {
134 state = Account.State.REGISTRATION_PLEASE_WAIT;
135 } else if (error.hasChild("not-acceptable")
136 && PASSWORD_TOO_WEAK_MSGS.contains(
137 error.findChildContent("text"))) {
138 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
139 }
140 }
141 throw new StateChangingError(state);
142 }
143 };
144 protected final Account account;
145 private final Features features = new Features(this);
146 private final HashMap<Jid, ServiceDiscoveryResult> disco = new HashMap<>();
147 private final HashMap<String, Jid> commands = new HashMap<>();
148 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
149 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks =
150 new Hashtable<>();
151 private final Set<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners =
152 new HashSet<>();
153 private final XmppConnectionService mXmppConnectionService;
154 private Socket socket;
155 private XmlReader tagReader;
156 private TagWriter tagWriter = new TagWriter();
157 private boolean shouldAuthenticate = true;
158 private boolean inSmacksSession = false;
159 private boolean quickStartInProgress = false;
160 private boolean isBound = false;
161 private Element streamFeatures;
162 private String streamId = null;
163 private int stanzasReceived = 0;
164 private int stanzasSent = 0;
165 private long lastPacketReceived = 0;
166 private long lastPingSent = 0;
167 private long lastConnect = 0;
168 private long lastSessionStarted = 0;
169 private long lastDiscoStarted = 0;
170 private boolean isMamPreferenceAlways = false;
171 private final AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
172 private final AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
173 private final AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
174 private final AtomicInteger mSmCatchupMessageCounter = new AtomicInteger(0);
175 private boolean mInteractive = false;
176 private int attempt = 0;
177 private OnPresencePacketReceived presenceListener = null;
178 private OnJinglePacketReceived jingleListener = null;
179 private OnIqPacketReceived unregisteredIqListener = null;
180 private OnMessagePacketReceived messageListener = null;
181 private OnStatusChanged statusListener = null;
182 private OnBindListener bindListener = null;
183 private OnMessageAcknowledged acknowledgedListener = null;
184 private SaslMechanism saslMechanism;
185 private HashedToken.Mechanism hashTokenRequest;
186 private HttpUrl redirectionUrl = null;
187 private String verifiedHostname = null;
188 private volatile Thread mThread;
189 private CountDownLatch mStreamCountDownLatch;
190
191 public XmppConnection(final Account account, final XmppConnectionService service) {
192 this.account = account;
193 this.mXmppConnectionService = service;
194 }
195
196 private static void fixResource(Context context, Account account) {
197 String resource = account.getResource();
198 int fixedPartLength =
199 context.getString(R.string.app_name).length() + 1; // include the trailing dot
200 int randomPartLength = 4; // 3 bytes
201 if (resource != null && resource.length() > fixedPartLength + randomPartLength) {
202 if (validBase64(
203 resource.substring(fixedPartLength, fixedPartLength + randomPartLength))) {
204 account.setResource(resource.substring(0, fixedPartLength + randomPartLength));
205 }
206 }
207 }
208
209 private static boolean validBase64(String input) {
210 try {
211 return Base64.decode(input, Base64.URL_SAFE).length == 3;
212 } catch (Throwable throwable) {
213 return false;
214 }
215 }
216
217 private void changeStatus(final Account.State nextStatus) {
218 synchronized (this) {
219 if (Thread.currentThread().isInterrupted()) {
220 Log.d(
221 Config.LOGTAG,
222 account.getJid().asBareJid()
223 + ": not changing status to "
224 + nextStatus
225 + " because thread was interrupted");
226 return;
227 }
228 if (account.getStatus() != nextStatus) {
229 if ((nextStatus == Account.State.OFFLINE)
230 && (account.getStatus() != Account.State.CONNECTING)
231 && (account.getStatus() != Account.State.ONLINE)
232 && (account.getStatus() != Account.State.DISABLED)) {
233 return;
234 }
235 if (nextStatus == Account.State.ONLINE) {
236 this.attempt = 0;
237 }
238 account.setStatus(nextStatus);
239 } else {
240 return;
241 }
242 }
243 if (statusListener != null) {
244 statusListener.onStatusChanged(account);
245 }
246 }
247
248 public Jid getJidForCommand(final String node) {
249 synchronized (this.commands) {
250 return this.commands.get(node);
251 }
252 }
253
254 public void prepareNewConnection() {
255 this.lastConnect = SystemClock.elapsedRealtime();
256 this.lastPingSent = SystemClock.elapsedRealtime();
257 this.lastDiscoStarted = Long.MAX_VALUE;
258 this.mWaitingForSmCatchup.set(false);
259 this.changeStatus(Account.State.CONNECTING);
260 }
261
262 public boolean isWaitingForSmCatchup() {
263 return mWaitingForSmCatchup.get();
264 }
265
266 public void incrementSmCatchupMessageCounter() {
267 this.mSmCatchupMessageCounter.incrementAndGet();
268 }
269
270 protected void connect() {
271 if (mXmppConnectionService.areMessagesInitialized()) {
272 mXmppConnectionService.resetSendingToWaiting(account);
273 }
274 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
275 features.encryptionEnabled = false;
276 this.inSmacksSession = false;
277 this.quickStartInProgress = false;
278 this.isBound = false;
279 this.attempt++;
280 this.verifiedHostname = null; // will be set if user entered hostname is being used or hostname was verified
281 // with dnssec
282 try {
283 Socket localSocket;
284 shouldAuthenticate = !account.isOptionSet(Account.OPTION_REGISTER);
285 this.changeStatus(Account.State.CONNECTING);
286 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
287 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
288 if (useTor) {
289 String destination;
290 if (account.getHostname().isEmpty() || account.isOnion()) {
291 destination = account.getServer();
292 } else {
293 destination = account.getHostname();
294 this.verifiedHostname = destination;
295 }
296
297 final int port = account.getPort();
298 final boolean directTls = Resolver.useDirectTls(port);
299
300 Log.d(
301 Config.LOGTAG,
302 account.getJid().asBareJid()
303 + ": connect to "
304 + destination
305 + " via Tor. directTls="
306 + directTls);
307 localSocket = SocksSocketFactory.createSocketOverTor(destination, port);
308
309 if (directTls) {
310 localSocket = upgradeSocketToTls(localSocket);
311 features.encryptionEnabled = true;
312 }
313
314 try {
315 startXmpp(localSocket);
316 } catch (final InterruptedException e) {
317 Log.d(
318 Config.LOGTAG,
319 account.getJid().asBareJid()
320 + ": thread was interrupted before beginning stream");
321 return;
322 } catch (final Exception e) {
323 throw new IOException("Could not start stream", e);
324 }
325 } else {
326 final String domain = account.getServer();
327 final List<Resolver.Result> results;
328 final boolean hardcoded = extended && !account.getHostname().isEmpty();
329 if (hardcoded) {
330 results = Resolver.fromHardCoded(account.getHostname(), account.getPort());
331 } else {
332 results = Resolver.resolve(domain);
333 }
334 if (Thread.currentThread().isInterrupted()) {
335 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
336 return;
337 }
338 if (results.size() == 0) {
339 Log.e(
340 Config.LOGTAG,
341 account.getJid().asBareJid() + ": Resolver results were empty");
342 return;
343 }
344 final Resolver.Result storedBackupResult;
345 if (hardcoded) {
346 storedBackupResult = null;
347 } else {
348 storedBackupResult =
349 mXmppConnectionService.databaseBackend.findResolverResult(domain);
350 if (storedBackupResult != null && !results.contains(storedBackupResult)) {
351 results.add(storedBackupResult);
352 Log.d(
353 Config.LOGTAG,
354 account.getJid().asBareJid()
355 + ": loaded backup resolver result from db: "
356 + storedBackupResult);
357 }
358 }
359 for (Iterator<Resolver.Result> iterator = results.iterator();
360 iterator.hasNext(); ) {
361 final Resolver.Result result = iterator.next();
362 if (Thread.currentThread().isInterrupted()) {
363 Log.d(
364 Config.LOGTAG,
365 account.getJid().asBareJid() + ": Thread was interrupted");
366 return;
367 }
368 try {
369 // if tls is true, encryption is implied and must not be started
370 features.encryptionEnabled = result.isDirectTls();
371 verifiedHostname =
372 result.isAuthenticated() ? result.getHostname().toString() : null;
373 Log.d(Config.LOGTAG, "verified hostname " + verifiedHostname);
374 final InetSocketAddress addr;
375 if (result.getIp() != null) {
376 addr = new InetSocketAddress(result.getIp(), result.getPort());
377 Log.d(
378 Config.LOGTAG,
379 account.getJid().asBareJid().toString()
380 + ": using values from resolver "
381 + (result.getHostname() == null
382 ? ""
383 : result.getHostname().toString() + "/")
384 + result.getIp().getHostAddress()
385 + ":"
386 + result.getPort()
387 + " tls: "
388 + features.encryptionEnabled);
389 } else {
390 addr =
391 new InetSocketAddress(
392 IDN.toASCII(result.getHostname().toString()),
393 result.getPort());
394 Log.d(
395 Config.LOGTAG,
396 account.getJid().asBareJid().toString()
397 + ": using values from resolver "
398 + result.getHostname().toString()
399 + ":"
400 + result.getPort()
401 + " tls: "
402 + features.encryptionEnabled);
403 }
404
405 localSocket = new Socket();
406 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
407
408 if (features.encryptionEnabled) {
409 localSocket = upgradeSocketToTls(localSocket);
410 }
411
412 localSocket.setSoTimeout(Config.SOCKET_TIMEOUT * 1000);
413 if (startXmpp(localSocket)) {
414 localSocket.setSoTimeout(
415 0); // reset to 0; once the connection is established we don’t
416 // want this
417 if (!hardcoded && !result.equals(storedBackupResult)) {
418 mXmppConnectionService.databaseBackend.saveResolverResult(
419 domain, result);
420 }
421 break; // successfully connected to server that speaks xmpp
422 } else {
423 FileBackend.close(localSocket);
424 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
425 }
426 } catch (final StateChangingException e) {
427 if (!iterator.hasNext()) {
428 throw e;
429 }
430 } catch (InterruptedException e) {
431 Log.d(
432 Config.LOGTAG,
433 account.getJid().asBareJid()
434 + ": thread was interrupted before beginning stream");
435 return;
436 } catch (final Throwable e) {
437 Log.d(
438 Config.LOGTAG,
439 account.getJid().asBareJid().toString()
440 + ": "
441 + e.getMessage()
442 + "("
443 + e.getClass().getName()
444 + ")");
445 if (!iterator.hasNext()) {
446 throw new UnknownHostException();
447 }
448 }
449 }
450 }
451 processStream();
452 } catch (final SecurityException e) {
453 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
454 } catch (final StateChangingException e) {
455 this.changeStatus(e.state);
456 } catch (final UnknownHostException
457 | ConnectException
458 | SocksSocketFactory.HostNotFoundException e) {
459 this.changeStatus(Account.State.SERVER_NOT_FOUND);
460 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
461 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
462 } catch (final IOException | XmlPullParserException e) {
463 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
464 this.changeStatus(Account.State.OFFLINE);
465 this.attempt = Math.max(0, this.attempt - 1);
466 } finally {
467 if (!Thread.currentThread().isInterrupted()) {
468 forceCloseSocket();
469 } else {
470 Log.d(
471 Config.LOGTAG,
472 account.getJid().asBareJid()
473 + ": not force closing socket because thread was interrupted");
474 }
475 }
476 }
477
478 /**
479 * Starts xmpp protocol, call after connecting to socket
480 *
481 * @return true if server returns with valid xmpp, false otherwise
482 */
483 private boolean startXmpp(final Socket socket) throws Exception {
484 if (Thread.currentThread().isInterrupted()) {
485 throw new InterruptedException();
486 }
487 this.socket = socket;
488 tagReader = new XmlReader();
489 if (tagWriter != null) {
490 tagWriter.forceClose();
491 }
492 tagWriter = new TagWriter();
493 tagWriter.setOutputStream(socket.getOutputStream());
494 tagReader.setInputStream(socket.getInputStream());
495 tagWriter.beginDocument();
496 final boolean quickStart;
497 if (socket instanceof SSLSocket) {
498 final SSLSocket sslSocket = (SSLSocket) socket;
499 SSLSockets.log(account, sslSocket);
500 quickStart = establishStream(SSLSockets.version(sslSocket));
501 } else {
502 quickStart = establishStream(SSLSockets.Version.NONE);
503 }
504 final Tag tag = tagReader.readTag();
505 if (Thread.currentThread().isInterrupted()) {
506 throw new InterruptedException();
507 }
508 final boolean success = tag != null && tag.isStart("stream", Namespace.STREAMS);
509 if (success && quickStart) {
510 this.quickStartInProgress = true;
511 }
512 return success;
513 }
514
515 private SSLSocketFactory getSSLSocketFactory()
516 throws NoSuchAlgorithmException, KeyManagementException {
517 final SSLContext sc = SSLSockets.getSSLContext();
518 final MemorizingTrustManager trustManager =
519 this.mXmppConnectionService.getMemorizingTrustManager();
520 final KeyManager[] keyManager;
521 if (account.getPrivateKeyAlias() != null) {
522 keyManager = new KeyManager[] {new MyKeyManager()};
523 } else {
524 keyManager = null;
525 }
526 final String domain = account.getServer();
527 sc.init(
528 keyManager,
529 new X509TrustManager[] {
530 mInteractive
531 ? trustManager.getInteractive(domain)
532 : trustManager.getNonInteractive(domain)
533 },
534 SECURE_RANDOM);
535 return sc.getSocketFactory();
536 }
537
538 @Override
539 public void run() {
540 synchronized (this) {
541 this.mThread = Thread.currentThread();
542 if (this.mThread.isInterrupted()) {
543 Log.d(
544 Config.LOGTAG,
545 account.getJid().asBareJid()
546 + ": aborting connect because thread was interrupted");
547 return;
548 }
549 forceCloseSocket();
550 }
551 connect();
552 }
553
554 private void processStream() throws XmlPullParserException, IOException {
555 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
556 this.mStreamCountDownLatch = streamCountDownLatch;
557 Tag nextTag = tagReader.readTag();
558 while (nextTag != null && !nextTag.isEnd("stream")) {
559 if (nextTag.isStart("error")) {
560 processStreamError(nextTag);
561 } else if (nextTag.isStart("features", Namespace.STREAMS)) {
562 processStreamFeatures(nextTag);
563 } else if (nextTag.isStart("proceed", Namespace.TLS)) {
564 switchOverToTls();
565 } else if (nextTag.isStart("success")) {
566 final Element success = tagReader.readElement(nextTag);
567 if (processSuccess(success)) {
568 break;
569 }
570
571 } else if (nextTag.isStart("failure", Namespace.TLS)) {
572 throw new StateChangingException(Account.State.TLS_ERROR);
573 } else if (nextTag.isStart("failure")) {
574 final Element failure = tagReader.readElement(nextTag);
575 processFailure(failure);
576 } else if (nextTag.isStart("continue", Namespace.SASL_2)) {
577 // two step sasl2 - we don’t support this yet
578 throw new StateChangingException(Account.State.INCOMPATIBLE_CLIENT);
579 } else if (nextTag.isStart("challenge")) {
580 if (isSecure() && this.saslMechanism != null) {
581 final Element challenge = tagReader.readElement(nextTag);
582 processChallenge(challenge);
583 } else {
584 Log.d(
585 Config.LOGTAG,
586 account.getJid().asBareJid()
587 + ": received 'challenge on an unsecure connection");
588 throw new StateChangingException(Account.State.INCOMPATIBLE_CLIENT);
589 }
590 } else if (nextTag.isStart("enabled", Namespace.STREAM_MANAGEMENT)) {
591 final Element enabled = tagReader.readElement(nextTag);
592 processEnabled(enabled);
593 } else if (nextTag.isStart("resumed")) {
594 final Element resumed = tagReader.readElement(nextTag);
595 processResumed(resumed);
596 } else if (nextTag.isStart("r")) {
597 tagReader.readElement(nextTag);
598 if (Config.EXTENDED_SM_LOGGING) {
599 Log.d(
600 Config.LOGTAG,
601 account.getJid().asBareJid()
602 + ": acknowledging stanza #"
603 + this.stanzasReceived);
604 }
605 final AckPacket ack = new AckPacket(this.stanzasReceived);
606 tagWriter.writeStanzaAsync(ack);
607 } else if (nextTag.isStart("a")) {
608 boolean accountUiNeedsRefresh = false;
609 synchronized (NotificationService.CATCHUP_LOCK) {
610 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
611 final int messageCount = mSmCatchupMessageCounter.get();
612 final int pendingIQs = packetCallbacks.size();
613 Log.d(
614 Config.LOGTAG,
615 account.getJid().asBareJid()
616 + ": SM catchup complete (messages="
617 + messageCount
618 + ", pending IQs="
619 + pendingIQs
620 + ")");
621 accountUiNeedsRefresh = true;
622 if (messageCount > 0) {
623 mXmppConnectionService
624 .getNotificationService()
625 .finishBacklog(true, account);
626 }
627 }
628 }
629 if (accountUiNeedsRefresh) {
630 mXmppConnectionService.updateAccountUi();
631 }
632 final Element ack = tagReader.readElement(nextTag);
633 lastPacketReceived = SystemClock.elapsedRealtime();
634 try {
635 final boolean acknowledgedMessages;
636 synchronized (this.mStanzaQueue) {
637 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
638 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence);
639 }
640 if (acknowledgedMessages) {
641 mXmppConnectionService.updateConversationUi();
642 }
643 } catch (NumberFormatException | NullPointerException e) {
644 Log.d(
645 Config.LOGTAG,
646 account.getJid().asBareJid()
647 + ": server send ack without sequence number");
648 }
649 } else if (nextTag.isStart("failed")) {
650 final Element failed = tagReader.readElement(nextTag);
651 processFailed(failed, true);
652 } else if (nextTag.isStart("iq")) {
653 processIq(nextTag);
654 } else if (nextTag.isStart("message")) {
655 processMessage(nextTag);
656 } else if (nextTag.isStart("presence")) {
657 processPresence(nextTag);
658 }
659 nextTag = tagReader.readTag();
660 }
661 if (nextTag != null && nextTag.isEnd("stream")) {
662 streamCountDownLatch.countDown();
663 }
664 }
665
666 private void processChallenge(final Element challenge) throws IOException {
667 final SaslMechanism.Version version;
668 try {
669 version = SaslMechanism.Version.of(challenge);
670 } catch (final IllegalArgumentException e) {
671 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
672 }
673 final Element response;
674 if (version == SaslMechanism.Version.SASL) {
675 response = new Element("response", Namespace.SASL);
676 } else if (version == SaslMechanism.Version.SASL_2) {
677 response = new Element("response", Namespace.SASL_2);
678 } else {
679 throw new AssertionError("Missing implementation for " + version);
680 }
681 try {
682 response.setContent(saslMechanism.getResponse(challenge.getContent(), sslSocketOrNull(socket)));
683 } catch (final SaslMechanism.AuthenticationException e) {
684 // TODO: Send auth abort tag.
685 Log.e(Config.LOGTAG, e.toString());
686 throw new StateChangingException(Account.State.UNAUTHORIZED);
687 }
688 tagWriter.writeElement(response);
689 }
690
691 private boolean processSuccess(final Element success)
692 throws IOException, XmlPullParserException {
693 final SaslMechanism.Version version;
694 try {
695 version = SaslMechanism.Version.of(success);
696 } catch (final IllegalArgumentException e) {
697 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
698 }
699 final SaslMechanism currentSaslMechanism = this.saslMechanism;
700 if (currentSaslMechanism == null) {
701 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
702 }
703 final String challenge;
704 if (version == SaslMechanism.Version.SASL) {
705 challenge = success.getContent();
706 } else if (version == SaslMechanism.Version.SASL_2) {
707 challenge = success.findChildContent("additional-data");
708 } else {
709 throw new AssertionError("Missing implementation for " + version);
710 }
711 try {
712 currentSaslMechanism.getResponse(challenge, sslSocketOrNull(socket));
713 } catch (final SaslMechanism.AuthenticationException e) {
714 Log.e(Config.LOGTAG, String.valueOf(e));
715 throw new StateChangingException(Account.State.UNAUTHORIZED);
716 }
717 Log.d(
718 Config.LOGTAG,
719 account.getJid().asBareJid().toString() + ": logged in (using " + version + ")");
720 if (SaslMechanism.pin(currentSaslMechanism)) {
721 account.setPinnedMechanism(currentSaslMechanism);
722 }
723 if (version == SaslMechanism.Version.SASL_2) {
724 final String authorizationIdentifier =
725 success.findChildContent("authorization-identifier");
726 final Jid authorizationJid;
727 try {
728 authorizationJid =
729 Strings.isNullOrEmpty(authorizationIdentifier)
730 ? null
731 : Jid.ofEscaped(authorizationIdentifier);
732 } catch (final IllegalArgumentException e) {
733 Log.d(
734 Config.LOGTAG,
735 account.getJid().asBareJid()
736 + ": SASL 2.0 authorization identifier was not a valid jid");
737 throw new StateChangingException(Account.State.BIND_FAILURE);
738 }
739 if (authorizationJid == null) {
740 throw new StateChangingException(Account.State.BIND_FAILURE);
741 }
742 Log.d(
743 Config.LOGTAG,
744 account.getJid().asBareJid()
745 + ": SASL 2.0 authorization identifier was "
746 + authorizationJid);
747 if (!account.getJid().getDomain().equals(authorizationJid.getDomain())) {
748 Log.d(
749 Config.LOGTAG,
750 account.getJid().asBareJid()
751 + ": server tried to re-assign domain to "
752 + authorizationJid.getDomain());
753 throw new StateChangingError(Account.State.BIND_FAILURE);
754 }
755 if (authorizationJid.isFullJid() && account.setJid(authorizationJid)) {
756 Log.d(
757 Config.LOGTAG,
758 account.getJid().asBareJid()
759 + ": jid changed during SASL 2.0. updating database");
760 }
761 final Element bound = success.findChild("bound", Namespace.BIND2);
762 final Element resumed = success.findChild("resumed", Namespace.STREAM_MANAGEMENT);
763 final Element failed = success.findChild("failed", Namespace.STREAM_MANAGEMENT);
764 final Element tokenWrapper = success.findChild("token", Namespace.FAST);
765 final String token = tokenWrapper == null ? null : tokenWrapper.getAttribute("token");
766 if (bound != null && resumed != null) {
767 Log.d(
768 Config.LOGTAG,
769 account.getJid().asBareJid()
770 + ": server sent bound and resumed in SASL2 success");
771 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
772 }
773 final boolean processNopStreamFeatures;
774 if (resumed != null && streamId != null) {
775 processResumed(resumed);
776 } else if (failed != null) {
777 processFailed(failed, false); // wait for new stream features
778 }
779 if (bound != null) {
780 clearIqCallbacks();
781 this.isBound = true;
782 final Element streamManagementEnabled =
783 bound.findChild("enabled", Namespace.STREAM_MANAGEMENT);
784 final Element carbonsEnabled = bound.findChild("enabled", Namespace.CARBONS);
785 final boolean waitForDisco;
786 if (streamManagementEnabled != null) {
787 processEnabled(streamManagementEnabled);
788 waitForDisco = true;
789 } else {
790 //if we did not enable stream management in bind do it now
791 waitForDisco = enableStreamManagement();
792 }
793 if (carbonsEnabled != null) {
794 Log.d(
795 Config.LOGTAG,
796 account.getJid().asBareJid() + ": successfully enabled carbons");
797 features.carbonsEnabled = true;
798 }
799 sendPostBindInitialization(waitForDisco, carbonsEnabled != null);
800 processNopStreamFeatures = true;
801 } else {
802 processNopStreamFeatures = false;
803 }
804 final HashedToken.Mechanism tokenMechanism;
805 if (SaslMechanism.hashedToken(currentSaslMechanism)) {
806 tokenMechanism = ((HashedToken) currentSaslMechanism).getTokenMechanism();
807 } else if (this.hashTokenRequest != null) {
808 tokenMechanism = this.hashTokenRequest;
809 } else {
810 tokenMechanism = null;
811 }
812 if (tokenMechanism != null && !Strings.isNullOrEmpty(token)) {
813 this.account.setFastToken(tokenMechanism,token);
814 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": storing hashed token "+tokenMechanism);
815 }
816 // a successful resume will not send stream features
817 if (processNopStreamFeatures) {
818 processNopStreamFeatures();
819 }
820 }
821 mXmppConnectionService.databaseBackend.updateAccount(account);
822 this.quickStartInProgress = false;
823 if (version == SaslMechanism.Version.SASL) {
824 tagReader.reset();
825 sendStartStream(false, true);
826 final Tag tag = tagReader.readTag();
827 if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
828 processStream();
829 return true;
830 } else {
831 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
832 }
833 } else {
834 return false;
835 }
836 }
837
838 private void processNopStreamFeatures() throws IOException {
839 final Tag tag = tagReader.readTag();
840 if (tag != null && tag.isStart("features", Namespace.STREAMS)) {
841 this.streamFeatures = tagReader.readElement(tag);
842 Log.d(
843 Config.LOGTAG,
844 account.getJid().asBareJid()
845 + ": processed NOP stream features after success: "
846 + XmlHelper.printElementNames(this.streamFeatures));
847 } else {
848 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received " + tag);
849 Log.d(
850 Config.LOGTAG,
851 account.getJid().asBareJid()
852 + ": server did not send stream features after SASL2 success");
853 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
854 }
855 }
856
857 private void processFailure(final Element failure) throws IOException {
858 final SaslMechanism.Version version;
859 try {
860 version = SaslMechanism.Version.of(failure);
861 } catch (final IllegalArgumentException e) {
862 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
863 }
864 Log.d(Config.LOGTAG, failure.toString());
865 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": login failure " + version);
866 if (SaslMechanism.hashedToken(this.saslMechanism)) {
867 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resetting token");
868 account.resetFastToken();
869 mXmppConnectionService.databaseBackend.updateAccount(account);
870 }
871 if (failure.hasChild("temporary-auth-failure")) {
872 throw new StateChangingException(Account.State.TEMPORARY_AUTH_FAILURE);
873 } else if (failure.hasChild("account-disabled")) {
874 final String text = failure.findChildContent("text");
875 if (Strings.isNullOrEmpty(text)) {
876 throw new StateChangingException(Account.State.UNAUTHORIZED);
877 }
878 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
879 if (matcher.find()) {
880 final HttpUrl url;
881 try {
882 url = HttpUrl.get(text.substring(matcher.start(), matcher.end()));
883 } catch (final IllegalArgumentException e) {
884 throw new StateChangingException(Account.State.UNAUTHORIZED);
885 }
886 if (url.isHttps()) {
887 this.redirectionUrl = url;
888 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
889 }
890 }
891 }
892 if (SaslMechanism.hashedToken(this.saslMechanism)) {
893 Log.d(
894 Config.LOGTAG,
895 account.getJid().asBareJid()
896 + ": fast authentication failed. falling back to regular authentication");
897 authenticate();
898 } else {
899 throw new StateChangingException(Account.State.UNAUTHORIZED);
900 }
901 }
902
903 private static SSLSocket sslSocketOrNull(final Socket socket) {
904 if (socket instanceof SSLSocket) {
905 return (SSLSocket) socket;
906 } else {
907 return null;
908 }
909 }
910
911 private void processEnabled(final Element enabled) {
912 final String streamId;
913 if (enabled.getAttributeAsBoolean("resume")) {
914 streamId = enabled.getAttribute("id");
915 Log.d(
916 Config.LOGTAG,
917 account.getJid().asBareJid().toString()
918 + ": stream management enabled (resumable)");
919 } else {
920 Log.d(
921 Config.LOGTAG,
922 account.getJid().asBareJid().toString() + ": stream management enabled");
923 streamId = null;
924 }
925 this.streamId = streamId;
926 this.stanzasReceived = 0;
927 this.inSmacksSession = true;
928 final RequestPacket r = new RequestPacket();
929 tagWriter.writeStanzaAsync(r);
930 }
931
932 private void processResumed(final Element resumed) throws StateChangingException {
933 this.inSmacksSession = true;
934 this.isBound = true;
935 this.tagWriter.writeStanzaAsync(new RequestPacket());
936 lastPacketReceived = SystemClock.elapsedRealtime();
937 final String h = resumed.getAttribute("h");
938 if (h == null) {
939 resetStreamId();
940 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
941 }
942 final int serverCount;
943 try {
944 serverCount = Integer.parseInt(h);
945 } catch (final NumberFormatException e) {
946 resetStreamId();
947 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
948 }
949 final ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
950 final boolean acknowledgedMessages;
951 synchronized (this.mStanzaQueue) {
952 if (serverCount < stanzasSent) {
953 Log.d(
954 Config.LOGTAG,
955 account.getJid().asBareJid() + ": session resumed with lost packages");
956 stanzasSent = serverCount;
957 } else {
958 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": session resumed");
959 }
960 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
961 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
962 failedStanzas.add(mStanzaQueue.valueAt(i));
963 }
964 mStanzaQueue.clear();
965 }
966 if (acknowledgedMessages) {
967 mXmppConnectionService.updateConversationUi();
968 }
969 Log.d(
970 Config.LOGTAG,
971 account.getJid().asBareJid() + ": resending " + failedStanzas.size() + " stanzas");
972 for (final AbstractAcknowledgeableStanza packet : failedStanzas) {
973 if (packet instanceof MessagePacket) {
974 MessagePacket message = (MessagePacket) packet;
975 mXmppConnectionService.markMessage(
976 account,
977 message.getTo().asBareJid(),
978 message.getId(),
979 Message.STATUS_UNSEND);
980 }
981 sendPacket(packet);
982 }
983 changeStatusToOnline();
984 }
985
986 private void changeStatusToOnline() {
987 Log.d(
988 Config.LOGTAG,
989 account.getJid().asBareJid() + ": online with resource " + account.getResource());
990 changeStatus(Account.State.ONLINE);
991 }
992
993 private void processFailed(final Element failed, final boolean sendBindRequest) {
994 final int serverCount;
995 try {
996 serverCount = Integer.parseInt(failed.getAttribute("h"));
997 } catch (final NumberFormatException | NullPointerException e) {
998 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
999 resetStreamId();
1000 if (sendBindRequest) {
1001 sendBindRequest();
1002 }
1003 return;
1004 }
1005 Log.d(
1006 Config.LOGTAG,
1007 account.getJid().asBareJid()
1008 + ": resumption failed but server acknowledged stanza #"
1009 + serverCount);
1010 final boolean acknowledgedMessages;
1011 synchronized (this.mStanzaQueue) {
1012 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
1013 }
1014 if (acknowledgedMessages) {
1015 mXmppConnectionService.updateConversationUi();
1016 }
1017 resetStreamId();
1018 if (sendBindRequest) {
1019 sendBindRequest();
1020 }
1021 }
1022
1023 private boolean acknowledgeStanzaUpTo(int serverCount) {
1024 if (serverCount > stanzasSent) {
1025 Log.e(
1026 Config.LOGTAG,
1027 "server acknowledged more stanzas than we sent. serverCount="
1028 + serverCount
1029 + ", ourCount="
1030 + stanzasSent);
1031 }
1032 boolean acknowledgedMessages = false;
1033 for (int i = 0; i < mStanzaQueue.size(); ++i) {
1034 if (serverCount >= mStanzaQueue.keyAt(i)) {
1035 if (Config.EXTENDED_SM_LOGGING) {
1036 Log.d(
1037 Config.LOGTAG,
1038 account.getJid().asBareJid()
1039 + ": server acknowledged stanza #"
1040 + mStanzaQueue.keyAt(i));
1041 }
1042 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
1043 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
1044 final MessagePacket packet = (MessagePacket) stanza;
1045 final String id = packet.getId();
1046 final Jid to = packet.getTo();
1047 if (id != null && to != null) {
1048 acknowledgedMessages |=
1049 acknowledgedListener.onMessageAcknowledged(account, to, id);
1050 }
1051 }
1052 mStanzaQueue.removeAt(i);
1053 i--;
1054 }
1055 }
1056 return acknowledgedMessages;
1057 }
1058
1059 private @NonNull Element processPacket(final Tag currentTag, final int packetType)
1060 throws IOException {
1061 final Element element;
1062 switch (packetType) {
1063 case PACKET_IQ:
1064 element = new IqPacket();
1065 break;
1066 case PACKET_MESSAGE:
1067 element = new MessagePacket();
1068 break;
1069 case PACKET_PRESENCE:
1070 element = new PresencePacket();
1071 break;
1072 default:
1073 throw new AssertionError("Should never encounter invalid type");
1074 }
1075 element.setAttributes(currentTag.getAttributes());
1076 Tag nextTag = tagReader.readTag();
1077 if (nextTag == null) {
1078 throw new IOException("interrupted mid tag");
1079 }
1080 while (!nextTag.isEnd(element.getName())) {
1081 if (!nextTag.isNo()) {
1082 element.addChild(tagReader.readElement(nextTag));
1083 }
1084 nextTag = tagReader.readTag();
1085 if (nextTag == null) {
1086 throw new IOException("interrupted mid tag");
1087 }
1088 }
1089 if (stanzasReceived == Integer.MAX_VALUE) {
1090 resetStreamId();
1091 throw new IOException("time to restart the session. cant handle >2 billion pcks");
1092 }
1093 if (inSmacksSession) {
1094 ++stanzasReceived;
1095 } else if (features.sm()) {
1096 Log.d(
1097 Config.LOGTAG,
1098 account.getJid().asBareJid()
1099 + ": not counting stanza("
1100 + element.getClass().getSimpleName()
1101 + "). Not in smacks session.");
1102 }
1103 lastPacketReceived = SystemClock.elapsedRealtime();
1104 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
1105 Log.d(Config.LOGTAG, "[background stanza] " + element);
1106 }
1107 if (element instanceof IqPacket
1108 && (((IqPacket) element).getType() == IqPacket.TYPE.SET)
1109 && element.hasChild("jingle", Namespace.JINGLE)) {
1110 return JinglePacket.upgrade((IqPacket) element);
1111 } else {
1112 return element;
1113 }
1114 }
1115
1116 private void processIq(final Tag currentTag) throws IOException {
1117 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
1118 if (!packet.valid()) {
1119 Log.e(
1120 Config.LOGTAG,
1121 "encountered invalid iq from='"
1122 + packet.getFrom()
1123 + "' to='"
1124 + packet.getTo()
1125 + "'");
1126 return;
1127 }
1128 if (packet instanceof JinglePacket) {
1129 if (this.jingleListener != null) {
1130 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
1131 }
1132 } else {
1133 OnIqPacketReceived callback = null;
1134 synchronized (this.packetCallbacks) {
1135 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple =
1136 packetCallbacks.get(packet.getId());
1137 if (packetCallbackDuple != null) {
1138 // Packets to the server should have responses from the server
1139 if (packetCallbackDuple.first.toServer(account)) {
1140 if (packet.fromServer(account)) {
1141 callback = packetCallbackDuple.second;
1142 packetCallbacks.remove(packet.getId());
1143 } else {
1144 Log.e(
1145 Config.LOGTAG,
1146 account.getJid().asBareJid().toString()
1147 + ": ignoring spoofed iq packet");
1148 }
1149 } else {
1150 if (packet.getFrom() != null
1151 && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
1152 callback = packetCallbackDuple.second;
1153 packetCallbacks.remove(packet.getId());
1154 } else {
1155 Log.e(
1156 Config.LOGTAG,
1157 account.getJid().asBareJid().toString()
1158 + ": ignoring spoofed iq packet");
1159 }
1160 }
1161 } else if (packet.getType() == IqPacket.TYPE.GET
1162 || packet.getType() == IqPacket.TYPE.SET) {
1163 callback = this.unregisteredIqListener;
1164 }
1165 }
1166 if (callback != null) {
1167 try {
1168 callback.onIqPacketReceived(account, packet);
1169 } catch (StateChangingError error) {
1170 throw new StateChangingException(error.state);
1171 }
1172 }
1173 }
1174 }
1175
1176 private void processMessage(final Tag currentTag) throws IOException {
1177 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
1178 if (!packet.valid()) {
1179 Log.e(
1180 Config.LOGTAG,
1181 "encountered invalid message from='"
1182 + packet.getFrom()
1183 + "' to='"
1184 + packet.getTo()
1185 + "'");
1186 return;
1187 }
1188 this.messageListener.onMessagePacketReceived(account, packet);
1189 }
1190
1191 private void processPresence(final Tag currentTag) throws IOException {
1192 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
1193 if (!packet.valid()) {
1194 Log.e(
1195 Config.LOGTAG,
1196 "encountered invalid presence from='"
1197 + packet.getFrom()
1198 + "' to='"
1199 + packet.getTo()
1200 + "'");
1201 return;
1202 }
1203 this.presenceListener.onPresencePacketReceived(account, packet);
1204 }
1205
1206 private void sendStartTLS() throws IOException {
1207 final Tag startTLS = Tag.empty("starttls");
1208 startTLS.setAttribute("xmlns", Namespace.TLS);
1209 tagWriter.writeTag(startTLS);
1210 }
1211
1212 private void switchOverToTls() throws XmlPullParserException, IOException {
1213 tagReader.readTag();
1214 final Socket socket = this.socket;
1215 final SSLSocket sslSocket = upgradeSocketToTls(socket);
1216 tagReader.setInputStream(sslSocket.getInputStream());
1217 tagWriter.setOutputStream(sslSocket.getOutputStream());
1218 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
1219 final boolean quickStart;
1220 try {
1221 quickStart = establishStream(SSLSockets.version(sslSocket));
1222 } catch (final InterruptedException e) {
1223 return;
1224 }
1225 if (quickStart) {
1226 this.quickStartInProgress = true;
1227 }
1228 features.encryptionEnabled = true;
1229 final Tag tag = tagReader.readTag();
1230 if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
1231 SSLSockets.log(account, sslSocket);
1232 processStream();
1233 } else {
1234 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
1235 }
1236 sslSocket.close();
1237 }
1238
1239 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
1240 final SSLSocketFactory sslSocketFactory;
1241 try {
1242 sslSocketFactory = getSSLSocketFactory();
1243 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
1244 throw new StateChangingException(Account.State.TLS_ERROR);
1245 }
1246 final InetAddress address = socket.getInetAddress();
1247 final SSLSocket sslSocket =
1248 (SSLSocket)
1249 sslSocketFactory.createSocket(
1250 socket, address.getHostAddress(), socket.getPort(), true);
1251 SSLSockets.setSecurity(sslSocket);
1252 SSLSockets.setHostname(sslSocket, IDN.toASCII(account.getServer()));
1253 SSLSockets.setApplicationProtocol(sslSocket, "xmpp-client");
1254 final XmppDomainVerifier xmppDomainVerifier = new XmppDomainVerifier();
1255 try {
1256 if (!xmppDomainVerifier.verify(
1257 account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
1258 Log.d(
1259 Config.LOGTAG,
1260 account.getJid().asBareJid()
1261 + ": TLS certificate domain verification failed");
1262 FileBackend.close(sslSocket);
1263 throw new StateChangingException(Account.State.TLS_ERROR_DOMAIN);
1264 }
1265 } catch (final SSLPeerUnverifiedException e) {
1266 FileBackend.close(sslSocket);
1267 throw new StateChangingException(Account.State.TLS_ERROR);
1268 }
1269 return sslSocket;
1270 }
1271
1272 private void processStreamFeatures(final Tag currentTag) throws IOException {
1273 this.streamFeatures = tagReader.readElement(currentTag);
1274 final boolean isSecure = isSecure();
1275 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
1276 if (this.quickStartInProgress) {
1277 if (this.streamFeatures.hasChild("authentication", Namespace.SASL_2)) {
1278 Log.d(
1279 Config.LOGTAG,
1280 account.getJid().asBareJid()
1281 + ": quick start in progress. ignoring features: "
1282 + XmlHelper.printElementNames(this.streamFeatures));
1283 if (SaslMechanism.hashedToken(this.saslMechanism)) {
1284 return;
1285 }
1286 if (isFastTokenAvailable(
1287 this.streamFeatures.findChild("authentication", Namespace.SASL_2))) {
1288 Log.d(
1289 Config.LOGTAG,
1290 account.getJid().asBareJid()
1291 + ": fast token available; resetting quick start");
1292 account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false);
1293 mXmppConnectionService.databaseBackend.updateAccount(account);
1294 }
1295 return;
1296 }
1297 Log.d(
1298 Config.LOGTAG,
1299 account.getJid().asBareJid()
1300 + ": server lost support for SASL 2. quick start not possible");
1301 this.account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false);
1302 mXmppConnectionService.databaseBackend.updateAccount(account);
1303 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1304 }
1305 if (this.streamFeatures.hasChild("starttls", Namespace.TLS)
1306 && !features.encryptionEnabled) {
1307 sendStartTLS();
1308 } else if (this.streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1309 && account.isOptionSet(Account.OPTION_REGISTER)) {
1310 if (isSecure) {
1311 register();
1312 } else {
1313 Log.d(
1314 Config.LOGTAG,
1315 account.getJid().asBareJid()
1316 + ": unable to find STARTTLS for registration process "
1317 + XmlHelper.printElementNames(this.streamFeatures));
1318 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1319 }
1320 } else if (!this.streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1321 && account.isOptionSet(Account.OPTION_REGISTER)) {
1322 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
1323 } else if (this.streamFeatures.hasChild("authentication", Namespace.SASL_2)
1324 && shouldAuthenticate
1325 && isSecure) {
1326 authenticate(SaslMechanism.Version.SASL_2);
1327 } else if (this.streamFeatures.hasChild("mechanisms", Namespace.SASL)
1328 && shouldAuthenticate
1329 && isSecure) {
1330 authenticate(SaslMechanism.Version.SASL);
1331 } else if (this.streamFeatures.hasChild("sm", Namespace.STREAM_MANAGEMENT)
1332 && streamId != null
1333 && !inSmacksSession) {
1334 if (Config.EXTENDED_SM_LOGGING) {
1335 Log.d(
1336 Config.LOGTAG,
1337 account.getJid().asBareJid()
1338 + ": resuming after stanza #"
1339 + stanzasReceived);
1340 }
1341 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived);
1342 this.mSmCatchupMessageCounter.set(0);
1343 this.mWaitingForSmCatchup.set(true);
1344 this.tagWriter.writeStanzaAsync(resume);
1345 } else if (needsBinding) {
1346 if (this.streamFeatures.hasChild("bind", Namespace.BIND) && isSecure) {
1347 sendBindRequest();
1348 } else {
1349 Log.d(
1350 Config.LOGTAG,
1351 account.getJid().asBareJid()
1352 + ": unable to find bind feature "
1353 + XmlHelper.printElementNames(this.streamFeatures));
1354 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1355 }
1356 } else {
1357 Log.d(
1358 Config.LOGTAG,
1359 account.getJid().asBareJid()
1360 + ": received NOP stream features: "
1361 + XmlHelper.printElementNames(this.streamFeatures));
1362 }
1363 }
1364
1365 private void authenticate() throws IOException {
1366 final boolean isSecure = isSecure();
1367 if (isSecure && this.streamFeatures.hasChild("authentication", Namespace.SASL_2)) {authenticate(SaslMechanism.Version.SASL_2);
1368 } else if (isSecure && this.streamFeatures.hasChild("mechanisms", Namespace.SASL)) {
1369 authenticate(SaslMechanism.Version.SASL);
1370 } else {
1371 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1372 }
1373 }
1374
1375 private boolean isSecure() {
1376 return features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
1377 }
1378
1379 private void authenticate(final SaslMechanism.Version version) throws IOException {
1380 final Element authElement;
1381 if (version == SaslMechanism.Version.SASL) {
1382 authElement = this.streamFeatures.findChild("mechanisms", Namespace.SASL);
1383 } else {
1384 authElement = this.streamFeatures.findChild("authentication", Namespace.SASL_2);
1385 }
1386 final Collection<String> mechanisms = SaslMechanism.mechanisms(authElement);
1387 final Element cbElement =
1388 this.streamFeatures.findChild("sasl-channel-binding", Namespace.CHANNEL_BINDING);
1389 final Collection<ChannelBinding> channelBindings = ChannelBinding.of(cbElement);
1390 final SaslMechanism.Factory factory = new SaslMechanism.Factory(account);
1391 final SaslMechanism saslMechanism = factory.of(mechanisms, channelBindings, version, SSLSockets.version(this.socket));
1392 this.saslMechanism = validate(saslMechanism, mechanisms);
1393 final boolean quickStartAvailable;
1394 final String firstMessage = this.saslMechanism.getClientFirstMessage(sslSocketOrNull(this.socket));
1395 final boolean usingFast = SaslMechanism.hashedToken(this.saslMechanism);
1396 final Element authenticate;
1397 if (version == SaslMechanism.Version.SASL) {
1398 authenticate = new Element("auth", Namespace.SASL);
1399 if (!Strings.isNullOrEmpty(firstMessage)) {
1400 authenticate.setContent(firstMessage);
1401 }
1402 quickStartAvailable = false;
1403 } else if (version == SaslMechanism.Version.SASL_2) {
1404 final Element inline = authElement.findChild("inline", Namespace.SASL_2);
1405 final boolean sm = inline != null && inline.hasChild("sm", Namespace.STREAM_MANAGEMENT);
1406 final HashedToken.Mechanism hashTokenRequest;
1407 if (usingFast) {
1408 hashTokenRequest = null;
1409 } else {
1410 final Element fast = inline == null ? null : inline.findChild("fast", Namespace.FAST);
1411 final Collection<String> fastMechanisms = SaslMechanism.mechanisms(fast);
1412 hashTokenRequest =
1413 HashedToken.Mechanism.best(fastMechanisms, SSLSockets.version(this.socket));
1414 }
1415 final Collection<String> bindFeatures = Bind2.features(inline);
1416 quickStartAvailable =
1417 sm
1418 && bindFeatures != null
1419 && bindFeatures.containsAll(Bind2.QUICKSTART_FEATURES);
1420 if (bindFeatures != null) {
1421 try {
1422 mXmppConnectionService.restoredFromDatabaseLatch.await();
1423 } catch (final InterruptedException e) {
1424 Log.d(
1425 Config.LOGTAG,
1426 account.getJid().asBareJid()
1427 + ": interrupted while waiting for DB restore during SASL2 bind");
1428 return;
1429 }
1430 }
1431 this.hashTokenRequest = hashTokenRequest;
1432 authenticate = generateAuthenticationRequest(firstMessage, usingFast, hashTokenRequest, bindFeatures, sm);
1433 } else {
1434 throw new AssertionError("Missing implementation for " + version);
1435 }
1436
1437 if (account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, quickStartAvailable)) {
1438 mXmppConnectionService.databaseBackend.updateAccount(account);
1439 }
1440
1441 Log.d(
1442 Config.LOGTAG,
1443 account.getJid().toString()
1444 + ": Authenticating with "
1445 + version
1446 + "/"
1447 + this.saslMechanism.getMechanism());
1448 authenticate.setAttribute("mechanism", this.saslMechanism.getMechanism());
1449 tagWriter.writeElement(authenticate);
1450 }
1451
1452 private static boolean isFastTokenAvailable(final Element authentication) {
1453 final Element inline = authentication == null ? null : authentication.findChild("inline");
1454 return inline != null && inline.hasChild("fast", Namespace.FAST);
1455 }
1456
1457 @NonNull
1458 private SaslMechanism validate(final @Nullable SaslMechanism saslMechanism, Collection<String> mechanisms) throws StateChangingException {
1459 if (saslMechanism == null) {
1460 Log.d(
1461 Config.LOGTAG,
1462 account.getJid().asBareJid()
1463 + ": unable to find supported SASL mechanism in "
1464 + mechanisms);
1465 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1466 }
1467 if (SaslMechanism.hashedToken(saslMechanism)) {
1468 return saslMechanism;
1469 }
1470 final int pinnedMechanism = account.getPinnedMechanismPriority();
1471 if (pinnedMechanism > saslMechanism.getPriority()) {
1472 Log.e(
1473 Config.LOGTAG,
1474 "Auth failed. Authentication mechanism "
1475 + saslMechanism.getMechanism()
1476 + " has lower priority ("
1477 + saslMechanism.getPriority()
1478 + ") than pinned priority ("
1479 + pinnedMechanism
1480 + "). Possible downgrade attack?");
1481 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
1482 }
1483 return saslMechanism;
1484 }
1485
1486 private Element generateAuthenticationRequest(final String firstMessage, final boolean usingFast) {
1487 return generateAuthenticationRequest(firstMessage, usingFast, null, Bind2.QUICKSTART_FEATURES, true);
1488 }
1489
1490 private Element generateAuthenticationRequest(
1491 final String firstMessage,
1492 final boolean usingFast,
1493 final HashedToken.Mechanism hashedTokenRequest,
1494 final Collection<String> bind,
1495 final boolean inlineStreamManagement) {
1496 final Element authenticate = new Element("authenticate", Namespace.SASL_2);
1497 if (!Strings.isNullOrEmpty(firstMessage)) {
1498 authenticate.addChild("initial-response").setContent(firstMessage);
1499 }
1500 final Element userAgent = authenticate.addChild("user-agent");
1501 userAgent.setAttribute("id", account.getUuid());
1502 userAgent
1503 .addChild("software")
1504 .setContent(mXmppConnectionService.getString(R.string.app_name));
1505 if (!PhoneHelper.isEmulator()) {
1506 userAgent
1507 .addChild("device")
1508 .setContent(String.format("%s %s", Build.MANUFACTURER, Build.MODEL));
1509 }
1510 if (bind != null) {
1511 authenticate.addChild(generateBindRequest(bind));
1512 }
1513 if (inlineStreamManagement && streamId != null) {
1514 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived);
1515 this.mSmCatchupMessageCounter.set(0);
1516 this.mWaitingForSmCatchup.set(true);
1517 authenticate.addChild(resume);
1518 }
1519 if (hashedTokenRequest != null) {
1520 authenticate
1521 .addChild("request-token", Namespace.FAST)
1522 .setAttribute("mechanism", hashedTokenRequest.name());
1523 }
1524 if (usingFast) {
1525 authenticate.addChild("fast", Namespace.FAST);
1526 }
1527 return authenticate;
1528 }
1529
1530 private Element generateBindRequest(final Collection<String> bindFeatures) {
1531 Log.d(Config.LOGTAG, "inline bind features: " + bindFeatures);
1532 final Element bind = new Element("bind", Namespace.BIND2);
1533 bind.addChild("tag").setContent(mXmppConnectionService.getString(R.string.app_name));
1534 if (bindFeatures.contains(Namespace.CARBONS)) {
1535 bind.addChild("enable", Namespace.CARBONS);
1536 }
1537 if (bindFeatures.contains(Namespace.STREAM_MANAGEMENT)) {
1538 bind.addChild(new EnablePacket());
1539 }
1540 return bind;
1541 }
1542
1543 private void register() {
1544 final String preAuth = account.getKey(Account.KEY_PRE_AUTH_REGISTRATION_TOKEN);
1545 if (preAuth != null && features.invite()) {
1546 final IqPacket preAuthRequest = new IqPacket(IqPacket.TYPE.SET);
1547 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
1548 sendUnmodifiedIqPacket(
1549 preAuthRequest,
1550 (account, response) -> {
1551 if (response.getType() == IqPacket.TYPE.RESULT) {
1552 sendRegistryRequest();
1553 } else {
1554 final String error = response.getErrorCondition();
1555 Log.d(
1556 Config.LOGTAG,
1557 account.getJid().asBareJid()
1558 + ": failed to pre auth. "
1559 + error);
1560 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
1561 }
1562 },
1563 true);
1564 } else {
1565 sendRegistryRequest();
1566 }
1567 }
1568
1569 private void sendRegistryRequest() {
1570 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
1571 register.query(Namespace.REGISTER);
1572 register.setTo(account.getDomain());
1573 sendUnmodifiedIqPacket(
1574 register,
1575 (account, packet) -> {
1576 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1577 return;
1578 }
1579 if (packet.getType() == IqPacket.TYPE.ERROR) {
1580 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1581 }
1582 final Element query = packet.query(Namespace.REGISTER);
1583 if (query.hasChild("username") && (query.hasChild("password"))) {
1584 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
1585 final Element username =
1586 new Element("username").setContent(account.getUsername());
1587 final Element password =
1588 new Element("password").setContent(account.getPassword());
1589 register1.query(Namespace.REGISTER).addChild(username);
1590 register1.query().addChild(password);
1591 register1.setFrom(account.getJid().asBareJid());
1592 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
1593 } else if (query.hasChild("x", Namespace.DATA)) {
1594 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
1595 final Element blob = query.findChild("data", "urn:xmpp:bob");
1596 final String id = packet.getId();
1597 InputStream is;
1598 if (blob != null) {
1599 try {
1600 final String base64Blob = blob.getContent();
1601 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
1602 is = new ByteArrayInputStream(strBlob);
1603 } catch (Exception e) {
1604 is = null;
1605 }
1606 } else {
1607 final boolean useTor =
1608 mXmppConnectionService.useTorToConnect() || account.isOnion();
1609 try {
1610 final String url = data.getValue("url");
1611 final String fallbackUrl = data.getValue("captcha-fallback-url");
1612 if (url != null) {
1613 is = HttpConnectionManager.open(url, useTor);
1614 } else if (fallbackUrl != null) {
1615 is = HttpConnectionManager.open(fallbackUrl, useTor);
1616 } else {
1617 is = null;
1618 }
1619 } catch (final IOException e) {
1620 Log.d(
1621 Config.LOGTAG,
1622 account.getJid().asBareJid() + ": unable to fetch captcha",
1623 e);
1624 is = null;
1625 }
1626 }
1627
1628 if (is != null) {
1629 Bitmap captcha = BitmapFactory.decodeStream(is);
1630 try {
1631 if (mXmppConnectionService.displayCaptchaRequest(
1632 account, id, data, captcha)) {
1633 return;
1634 }
1635 } catch (Exception e) {
1636 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1637 }
1638 }
1639 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1640 } else if (query.hasChild("instructions")
1641 || query.hasChild("x", Namespace.OOB)) {
1642 final String instructions = query.findChildContent("instructions");
1643 final Element oob = query.findChild("x", Namespace.OOB);
1644 final String url = oob == null ? null : oob.findChildContent("url");
1645 if (url != null) {
1646 setAccountCreationFailed(url);
1647 } else if (instructions != null) {
1648 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
1649 if (matcher.find()) {
1650 setAccountCreationFailed(
1651 instructions.substring(matcher.start(), matcher.end()));
1652 }
1653 }
1654 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1655 }
1656 },
1657 true);
1658 }
1659
1660 private void setAccountCreationFailed(final String url) {
1661 final HttpUrl httpUrl = url == null ? null : HttpUrl.parse(url);
1662 if (httpUrl != null && httpUrl.isHttps()) {
1663 this.redirectionUrl = httpUrl;
1664 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1665 }
1666 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1667 }
1668
1669 public HttpUrl getRedirectionUrl() {
1670 return this.redirectionUrl;
1671 }
1672
1673 public void resetEverything() {
1674 resetAttemptCount(true);
1675 resetStreamId();
1676 clearIqCallbacks();
1677 this.stanzasSent = 0;
1678 mStanzaQueue.clear();
1679 this.redirectionUrl = null;
1680 synchronized (this.disco) {
1681 disco.clear();
1682 }
1683 synchronized (this.commands) {
1684 this.commands.clear();
1685 }
1686 this.saslMechanism = null;
1687 }
1688
1689 private void sendBindRequest() {
1690 try {
1691 mXmppConnectionService.restoredFromDatabaseLatch.await();
1692 } catch (InterruptedException e) {
1693 Log.d(
1694 Config.LOGTAG,
1695 account.getJid().asBareJid()
1696 + ": interrupted while waiting for DB restore during bind");
1697 return;
1698 }
1699 clearIqCallbacks();
1700 if (account.getJid().isBareJid()) {
1701 account.setResource(this.createNewResource());
1702 } else {
1703 fixResource(mXmppConnectionService, account);
1704 }
1705 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1706 final String resource =
1707 Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1708 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1709 this.sendUnmodifiedIqPacket(
1710 iq,
1711 (account, packet) -> {
1712 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1713 return;
1714 }
1715 final Element bind = packet.findChild("bind");
1716 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1717 isBound = true;
1718 final Element jid = bind.findChild("jid");
1719 if (jid != null && jid.getContent() != null) {
1720 try {
1721 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1722 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1723 Log.d(
1724 Config.LOGTAG,
1725 account.getJid().asBareJid()
1726 + ": server tried to re-assign domain to "
1727 + assignedJid.getDomain());
1728 throw new StateChangingError(Account.State.BIND_FAILURE);
1729 }
1730 if (account.setJid(assignedJid)) {
1731 Log.d(
1732 Config.LOGTAG,
1733 account.getJid().asBareJid()
1734 + ": jid changed during bind. updating database");
1735 mXmppConnectionService.databaseBackend.updateAccount(account);
1736 }
1737 if (streamFeatures.hasChild("session")
1738 && !streamFeatures
1739 .findChild("session")
1740 .hasChild("optional")) {
1741 sendStartSession();
1742 } else {
1743 final boolean waitForDisco = enableStreamManagement();
1744 sendPostBindInitialization(waitForDisco, false);
1745 }
1746 return;
1747 } catch (final IllegalArgumentException e) {
1748 Log.d(
1749 Config.LOGTAG,
1750 account.getJid().asBareJid()
1751 + ": server reported invalid jid ("
1752 + jid.getContent()
1753 + ") on bind");
1754 }
1755 } else {
1756 Log.d(
1757 Config.LOGTAG,
1758 account.getJid()
1759 + ": disconnecting because of bind failure. (no jid)");
1760 }
1761 } else {
1762 Log.d(
1763 Config.LOGTAG,
1764 account.getJid()
1765 + ": disconnecting because of bind failure ("
1766 + packet);
1767 }
1768 final Element error = packet.findChild("error");
1769 if (packet.getType() == IqPacket.TYPE.ERROR
1770 && error != null
1771 && error.hasChild("conflict")) {
1772 account.setResource(createNewResource());
1773 }
1774 throw new StateChangingError(Account.State.BIND_FAILURE);
1775 },
1776 true);
1777 }
1778
1779 private void clearIqCallbacks() {
1780 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1781 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1782 synchronized (this.packetCallbacks) {
1783 if (this.packetCallbacks.size() == 0) {
1784 return;
1785 }
1786 Log.d(
1787 Config.LOGTAG,
1788 account.getJid().asBareJid()
1789 + ": clearing "
1790 + this.packetCallbacks.size()
1791 + " iq callbacks");
1792 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator =
1793 this.packetCallbacks.values().iterator();
1794 while (iterator.hasNext()) {
1795 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1796 callbacks.add(entry.second);
1797 iterator.remove();
1798 }
1799 }
1800 for (OnIqPacketReceived callback : callbacks) {
1801 try {
1802 callback.onIqPacketReceived(account, failurePacket);
1803 } catch (StateChangingError error) {
1804 Log.d(
1805 Config.LOGTAG,
1806 account.getJid().asBareJid()
1807 + ": caught StateChangingError("
1808 + error.state.toString()
1809 + ") while clearing callbacks");
1810 // ignore
1811 }
1812 }
1813 Log.d(
1814 Config.LOGTAG,
1815 account.getJid().asBareJid()
1816 + ": done clearing iq callbacks. "
1817 + this.packetCallbacks.size()
1818 + " left");
1819 }
1820
1821 public void sendDiscoTimeout() {
1822 if (mWaitForDisco.compareAndSet(true, false)) {
1823 Log.d(
1824 Config.LOGTAG,
1825 account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1826 finalizeBind();
1827 }
1828 }
1829
1830 private void sendStartSession() {
1831 Log.d(
1832 Config.LOGTAG,
1833 account.getJid().asBareJid() + ": sending legacy session to outdated server");
1834 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1835 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1836 this.sendUnmodifiedIqPacket(
1837 startSession,
1838 (account, packet) -> {
1839 if (packet.getType() == IqPacket.TYPE.RESULT) {
1840 final boolean waitForDisco = enableStreamManagement();
1841 sendPostBindInitialization(waitForDisco, false);
1842 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1843 throw new StateChangingError(Account.State.SESSION_FAILURE);
1844 }
1845 },
1846 true);
1847 }
1848
1849 private boolean enableStreamManagement() {
1850 final boolean streamManagement =
1851 this.streamFeatures.hasChild("sm", Namespace.STREAM_MANAGEMENT);
1852 if (streamManagement) {
1853 synchronized (this.mStanzaQueue) {
1854 final EnablePacket enable = new EnablePacket();
1855 tagWriter.writeStanzaAsync(enable);
1856 stanzasSent = 0;
1857 mStanzaQueue.clear();
1858 }
1859 return true;
1860 } else {
1861 return false;
1862 }
1863 }
1864
1865 private void sendPostBindInitialization(
1866 final boolean waitForDisco, final boolean carbonsEnabled) {
1867 features.carbonsEnabled = carbonsEnabled;
1868 features.blockListRequested = false;
1869 synchronized (this.disco) {
1870 this.disco.clear();
1871 }
1872 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1873 mPendingServiceDiscoveries.set(0);
1874 if (!waitForDisco
1875 || Patches.DISCO_EXCEPTIONS.contains(
1876 account.getJid().getDomain().toEscapedString())) {
1877 Log.d(
1878 Config.LOGTAG,
1879 account.getJid().asBareJid() + ": do not wait for service discovery");
1880 mWaitForDisco.set(false);
1881 } else {
1882 mWaitForDisco.set(true);
1883 }
1884 lastDiscoStarted = SystemClock.elapsedRealtime();
1885 mXmppConnectionService.scheduleWakeUpCall(
1886 Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1887 final Element caps = streamFeatures.findChild("c");
1888 final String hash = caps == null ? null : caps.getAttribute("hash");
1889 final String ver = caps == null ? null : caps.getAttribute("ver");
1890 ServiceDiscoveryResult discoveryResult = null;
1891 if (hash != null && ver != null) {
1892 discoveryResult =
1893 mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1894 }
1895 final boolean requestDiscoItemsFirst =
1896 !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1897 if (requestDiscoItemsFirst) {
1898 sendServiceDiscoveryItems(account.getDomain());
1899 }
1900 if (discoveryResult == null) {
1901 sendServiceDiscoveryInfo(account.getDomain());
1902 } else {
1903 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1904 disco.put(account.getDomain(), discoveryResult);
1905 }
1906 discoverMamPreferences();
1907 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1908 if (!requestDiscoItemsFirst) {
1909 sendServiceDiscoveryItems(account.getDomain());
1910 }
1911
1912 if (!mWaitForDisco.get()) {
1913 finalizeBind();
1914 }
1915 this.lastSessionStarted = SystemClock.elapsedRealtime();
1916 }
1917
1918 private void sendServiceDiscoveryInfo(final Jid jid) {
1919 mPendingServiceDiscoveries.incrementAndGet();
1920 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1921 iq.setTo(jid);
1922 iq.query("http://jabber.org/protocol/disco#info");
1923 this.sendIqPacket(
1924 iq,
1925 (account, packet) -> {
1926 if (packet.getType() == IqPacket.TYPE.RESULT) {
1927 boolean advancedStreamFeaturesLoaded;
1928 synchronized (XmppConnection.this.disco) {
1929 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1930 if (jid.equals(account.getDomain())) {
1931 mXmppConnectionService.databaseBackend.insertDiscoveryResult(
1932 result);
1933 }
1934 disco.put(jid, result);
1935 advancedStreamFeaturesLoaded =
1936 disco.containsKey(account.getDomain())
1937 && disco.containsKey(account.getJid().asBareJid());
1938 }
1939 if (advancedStreamFeaturesLoaded
1940 && (jid.equals(account.getDomain())
1941 || jid.equals(account.getJid().asBareJid()))) {
1942 enableAdvancedStreamFeatures();
1943 }
1944 } else if (packet.getType() == IqPacket.TYPE.ERROR) {
1945 Log.d(
1946 Config.LOGTAG,
1947 account.getJid().asBareJid()
1948 + ": could not query disco info for "
1949 + jid.toString());
1950 final boolean serverOrAccount =
1951 jid.equals(account.getDomain())
1952 || jid.equals(account.getJid().asBareJid());
1953 final boolean advancedStreamFeaturesLoaded;
1954 if (serverOrAccount) {
1955 synchronized (XmppConnection.this.disco) {
1956 disco.put(jid, ServiceDiscoveryResult.empty());
1957 advancedStreamFeaturesLoaded =
1958 disco.containsKey(account.getDomain())
1959 && disco.containsKey(account.getJid().asBareJid());
1960 }
1961 } else {
1962 advancedStreamFeaturesLoaded = false;
1963 }
1964 if (advancedStreamFeaturesLoaded) {
1965 enableAdvancedStreamFeatures();
1966 }
1967 }
1968 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1969 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1970 && mWaitForDisco.compareAndSet(true, false)) {
1971 finalizeBind();
1972 }
1973 }
1974 });
1975 }
1976
1977 private void discoverMamPreferences() {
1978 IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1979 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1980 sendIqPacket(
1981 request,
1982 (account, response) -> {
1983 if (response.getType() == IqPacket.TYPE.RESULT) {
1984 Element prefs =
1985 response.findChild(
1986 "prefs", MessageArchiveService.Version.MAM_2.namespace);
1987 isMamPreferenceAlways =
1988 "always"
1989 .equals(
1990 prefs == null
1991 ? null
1992 : prefs.getAttribute("default"));
1993 }
1994 });
1995 }
1996
1997 private void discoverCommands() {
1998 final IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1999 request.setTo(account.getDomain());
2000 request.addChild("query", Namespace.DISCO_ITEMS).setAttribute("node", Namespace.COMMANDS);
2001 sendIqPacket(
2002 request,
2003 (account, response) -> {
2004 if (response.getType() == IqPacket.TYPE.RESULT) {
2005 final Element query = response.findChild("query", Namespace.DISCO_ITEMS);
2006 if (query == null) {
2007 return;
2008 }
2009 final HashMap<String, Jid> commands = new HashMap<>();
2010 for (final Element child : query.getChildren()) {
2011 if ("item".equals(child.getName())) {
2012 final String node = child.getAttribute("node");
2013 final Jid jid = child.getAttributeAsJid("jid");
2014 if (node != null && jid != null) {
2015 commands.put(node, jid);
2016 }
2017 }
2018 }
2019 synchronized (this.commands) {
2020 this.commands.clear();
2021 this.commands.putAll(commands);
2022 }
2023 }
2024 });
2025 }
2026
2027 public boolean isMamPreferenceAlways() {
2028 return isMamPreferenceAlways;
2029 }
2030
2031 private void finalizeBind() {
2032 if (bindListener != null) {
2033 bindListener.onBind(account);
2034 }
2035 changeStatusToOnline();
2036 }
2037
2038 private void enableAdvancedStreamFeatures() {
2039 if (getFeatures().blocking() && !features.blockListRequested) {
2040 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
2041 this.sendIqPacket(
2042 getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
2043 }
2044 for (final OnAdvancedStreamFeaturesLoaded listener :
2045 advancedStreamFeaturesLoadedListeners) {
2046 listener.onAdvancedStreamFeaturesAvailable(account);
2047 }
2048 if (getFeatures().carbons() && !features.carbonsEnabled) {
2049 sendEnableCarbons();
2050 }
2051 if (getFeatures().commands()) {
2052 discoverCommands();
2053 }
2054 }
2055
2056 private void sendServiceDiscoveryItems(final Jid server) {
2057 mPendingServiceDiscoveries.incrementAndGet();
2058 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
2059 iq.setTo(server.getDomain());
2060 iq.query("http://jabber.org/protocol/disco#items");
2061 this.sendIqPacket(
2062 iq,
2063 (account, packet) -> {
2064 if (packet.getType() == IqPacket.TYPE.RESULT) {
2065 final HashSet<Jid> items = new HashSet<>();
2066 final List<Element> elements = packet.query().getChildren();
2067 for (final Element element : elements) {
2068 if (element.getName().equals("item")) {
2069 final Jid jid =
2070 InvalidJid.getNullForInvalid(
2071 element.getAttributeAsJid("jid"));
2072 if (jid != null && !jid.equals(account.getDomain())) {
2073 items.add(jid);
2074 }
2075 }
2076 }
2077 for (Jid jid : items) {
2078 sendServiceDiscoveryInfo(jid);
2079 }
2080 } else {
2081 Log.d(
2082 Config.LOGTAG,
2083 account.getJid().asBareJid()
2084 + ": could not query disco items of "
2085 + server);
2086 }
2087 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
2088 if (mPendingServiceDiscoveries.decrementAndGet() == 0
2089 && mWaitForDisco.compareAndSet(true, false)) {
2090 finalizeBind();
2091 }
2092 }
2093 });
2094 }
2095
2096 private void sendEnableCarbons() {
2097 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
2098 iq.addChild("enable", Namespace.CARBONS);
2099 this.sendIqPacket(
2100 iq,
2101 (account, packet) -> {
2102 if (packet.getType() == IqPacket.TYPE.RESULT) {
2103 Log.d(
2104 Config.LOGTAG,
2105 account.getJid().asBareJid() + ": successfully enabled carbons");
2106 features.carbonsEnabled = true;
2107 } else {
2108 Log.d(
2109 Config.LOGTAG,
2110 account.getJid().asBareJid()
2111 + ": could not enable carbons "
2112 + packet);
2113 }
2114 });
2115 }
2116
2117 private void processStreamError(final Tag currentTag) throws IOException {
2118 final Element streamError = tagReader.readElement(currentTag);
2119 if (streamError == null) {
2120 return;
2121 }
2122 if (streamError.hasChild("conflict")) {
2123 account.setResource(createNewResource());
2124 Log.d(
2125 Config.LOGTAG,
2126 account.getJid().asBareJid()
2127 + ": switching resource due to conflict ("
2128 + account.getResource()
2129 + ")");
2130 throw new IOException();
2131 } else if (streamError.hasChild("host-unknown")) {
2132 throw new StateChangingException(Account.State.HOST_UNKNOWN);
2133 } else if (streamError.hasChild("policy-violation")) {
2134 this.lastConnect = SystemClock.elapsedRealtime();
2135 final String text = streamError.findChildContent("text");
2136 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": policy violation. " + text);
2137 failPendingMessages(text);
2138 throw new StateChangingException(Account.State.POLICY_VIOLATION);
2139 } else {
2140 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError);
2141 throw new StateChangingException(Account.State.STREAM_ERROR);
2142 }
2143 }
2144
2145 private void failPendingMessages(final String error) {
2146 synchronized (this.mStanzaQueue) {
2147 for (int i = 0; i < mStanzaQueue.size(); ++i) {
2148 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
2149 if (stanza instanceof MessagePacket) {
2150 final MessagePacket packet = (MessagePacket) stanza;
2151 final String id = packet.getId();
2152 final Jid to = packet.getTo();
2153 mXmppConnectionService.markMessage(
2154 account, to.asBareJid(), id, Message.STATUS_SEND_FAILED, error);
2155 }
2156 }
2157 }
2158 }
2159
2160 private boolean establishStream(final SSLSockets.Version sslVersion)
2161 throws IOException, InterruptedException {
2162 final SaslMechanism quickStartMechanism =
2163 SaslMechanism.ensureAvailable(account.getQuickStartMechanism(), sslVersion);
2164 final boolean secureConnection = sslVersion != SSLSockets.Version.NONE;
2165 if (secureConnection
2166 && Config.QUICKSTART_ENABLED
2167 && quickStartMechanism != null
2168 && account.isOptionSet(Account.OPTION_QUICKSTART_AVAILABLE)) {
2169 mXmppConnectionService.restoredFromDatabaseLatch.await();
2170 this.saslMechanism = quickStartMechanism;
2171 final boolean usingFast = quickStartMechanism instanceof HashedToken;
2172 final Element authenticate =
2173 generateAuthenticationRequest(quickStartMechanism.getClientFirstMessage(sslSocketOrNull(this.socket)), usingFast);
2174 authenticate.setAttribute("mechanism", quickStartMechanism.getMechanism());
2175 sendStartStream(true, false);
2176 tagWriter.writeElement(authenticate);
2177 Log.d(
2178 Config.LOGTAG,
2179 account.getJid().toString()
2180 + ": quick start with "
2181 + quickStartMechanism.getMechanism());
2182 return true;
2183 } else {
2184 sendStartStream(secureConnection, true);
2185 return false;
2186 }
2187 }
2188
2189 private void sendStartStream(final boolean from, final boolean flush) throws IOException {
2190 final Tag stream = Tag.start("stream:stream");
2191 stream.setAttribute("to", account.getServer());
2192 if (from) {
2193 stream.setAttribute("from", account.getJid().asBareJid().toEscapedString());
2194 }
2195 stream.setAttribute("version", "1.0");
2196 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
2197 stream.setAttribute("xmlns", "jabber:client");
2198 stream.setAttribute("xmlns:stream", Namespace.STREAMS);
2199 tagWriter.writeTag(stream, flush);
2200 }
2201
2202 private String createNewResource() {
2203 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
2204 }
2205
2206 private String nextRandomId() {
2207 return nextRandomId(false);
2208 }
2209
2210 private String nextRandomId(final boolean s) {
2211 return CryptoHelper.random(s ? 3 : 9);
2212 }
2213
2214 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
2215 packet.setFrom(account.getJid());
2216 return this.sendUnmodifiedIqPacket(packet, callback, false);
2217 }
2218
2219 public synchronized String sendUnmodifiedIqPacket(
2220 final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
2221 if (packet.getId() == null) {
2222 packet.setAttribute("id", nextRandomId());
2223 }
2224 if (callback != null) {
2225 synchronized (this.packetCallbacks) {
2226 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
2227 }
2228 }
2229 this.sendPacket(packet, force);
2230 return packet.getId();
2231 }
2232
2233 public void sendMessagePacket(final MessagePacket packet) {
2234 this.sendPacket(packet);
2235 }
2236
2237 public void sendPresencePacket(final PresencePacket packet) {
2238 this.sendPacket(packet);
2239 }
2240
2241 private synchronized void sendPacket(final AbstractStanza packet) {
2242 sendPacket(packet, false);
2243 }
2244
2245 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
2246 if (stanzasSent == Integer.MAX_VALUE) {
2247 resetStreamId();
2248 disconnect(true);
2249 return;
2250 }
2251 synchronized (this.mStanzaQueue) {
2252 if (force || isBound) {
2253 tagWriter.writeStanzaAsync(packet);
2254 } else {
2255 Log.d(
2256 Config.LOGTAG,
2257 account.getJid().asBareJid()
2258 + " do not write stanza to unbound stream "
2259 + packet.toString());
2260 }
2261 if (packet instanceof AbstractAcknowledgeableStanza) {
2262 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
2263
2264 if (this.mStanzaQueue.size() != 0) {
2265 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
2266 if (currentHighestKey != stanzasSent) {
2267 throw new AssertionError("Stanza count messed up");
2268 }
2269 }
2270
2271 ++stanzasSent;
2272 this.mStanzaQueue.append(stanzasSent, stanza);
2273 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
2274 if (Config.EXTENDED_SM_LOGGING) {
2275 Log.d(
2276 Config.LOGTAG,
2277 account.getJid().asBareJid()
2278 + ": requesting ack for message stanza #"
2279 + stanzasSent);
2280 }
2281 tagWriter.writeStanzaAsync(new RequestPacket());
2282 }
2283 }
2284 }
2285 }
2286
2287 public void sendPing() {
2288 if (!r()) {
2289 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
2290 iq.setFrom(account.getJid());
2291 iq.addChild("ping", Namespace.PING);
2292 this.sendIqPacket(iq, null);
2293 }
2294 this.lastPingSent = SystemClock.elapsedRealtime();
2295 }
2296
2297 public void setOnMessagePacketReceivedListener(final OnMessagePacketReceived listener) {
2298 this.messageListener = listener;
2299 }
2300
2301 public void setOnUnregisteredIqPacketReceivedListener(final OnIqPacketReceived listener) {
2302 this.unregisteredIqListener = listener;
2303 }
2304
2305 public void setOnPresencePacketReceivedListener(final OnPresencePacketReceived listener) {
2306 this.presenceListener = listener;
2307 }
2308
2309 public void setOnJinglePacketReceivedListener(final OnJinglePacketReceived listener) {
2310 this.jingleListener = listener;
2311 }
2312
2313 public void setOnStatusChangedListener(final OnStatusChanged listener) {
2314 this.statusListener = listener;
2315 }
2316
2317 public void setOnBindListener(final OnBindListener listener) {
2318 this.bindListener = listener;
2319 }
2320
2321 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
2322 this.acknowledgedListener = listener;
2323 }
2324
2325 public void addOnAdvancedStreamFeaturesAvailableListener(
2326 final OnAdvancedStreamFeaturesLoaded listener) {
2327 this.advancedStreamFeaturesLoadedListeners.add(listener);
2328 }
2329
2330 private void forceCloseSocket() {
2331 FileBackend.close(this.socket);
2332 FileBackend.close(this.tagReader);
2333 }
2334
2335 public void interrupt() {
2336 if (this.mThread != null) {
2337 this.mThread.interrupt();
2338 }
2339 }
2340
2341 public void disconnect(final boolean force) {
2342 interrupt();
2343 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
2344 if (force) {
2345 forceCloseSocket();
2346 } else {
2347 final TagWriter currentTagWriter = this.tagWriter;
2348 if (currentTagWriter.isActive()) {
2349 currentTagWriter.finish();
2350 final Socket currentSocket = this.socket;
2351 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
2352 try {
2353 currentTagWriter.await(1, TimeUnit.SECONDS);
2354 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
2355 currentTagWriter.writeTag(Tag.end("stream:stream"));
2356 if (streamCountDownLatch != null) {
2357 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
2358 Log.d(
2359 Config.LOGTAG,
2360 account.getJid().asBareJid() + ": remote ended stream");
2361 } else {
2362 Log.d(
2363 Config.LOGTAG,
2364 account.getJid().asBareJid()
2365 + ": remote has not closed socket. force closing");
2366 }
2367 }
2368 } catch (InterruptedException e) {
2369 Log.d(
2370 Config.LOGTAG,
2371 account.getJid().asBareJid()
2372 + ": interrupted while gracefully closing stream");
2373 } catch (final IOException e) {
2374 Log.d(
2375 Config.LOGTAG,
2376 account.getJid().asBareJid()
2377 + ": io exception during disconnect ("
2378 + e.getMessage()
2379 + ")");
2380 } finally {
2381 FileBackend.close(currentSocket);
2382 }
2383 } else {
2384 forceCloseSocket();
2385 }
2386 }
2387 }
2388
2389 private void resetStreamId() {
2390 this.streamId = null;
2391 }
2392
2393 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
2394 synchronized (this.disco) {
2395 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
2396 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
2397 if (cursor.getValue().getFeatures().contains(feature)) {
2398 items.add(cursor);
2399 }
2400 }
2401 return items;
2402 }
2403 }
2404
2405 public Jid findDiscoItemByFeature(final String feature) {
2406 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
2407 if (items.size() >= 1) {
2408 return items.get(0).getKey();
2409 }
2410 return null;
2411 }
2412
2413 public boolean r() {
2414 if (getFeatures().sm()) {
2415 this.tagWriter.writeStanzaAsync(new RequestPacket());
2416 return true;
2417 } else {
2418 return false;
2419 }
2420 }
2421
2422 public List<String> getMucServersWithholdAccount() {
2423 final List<String> servers = getMucServers();
2424 servers.remove(account.getDomain().toEscapedString());
2425 return servers;
2426 }
2427
2428 public List<String> getMucServers() {
2429 List<String> servers = new ArrayList<>();
2430 synchronized (this.disco) {
2431 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
2432 final ServiceDiscoveryResult value = cursor.getValue();
2433 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
2434 && value.hasIdentity("conference", "text")
2435 && !value.getFeatures().contains("jabber:iq:gateway")
2436 && !value.hasIdentity("conference", "irc")) {
2437 servers.add(cursor.getKey().toString());
2438 }
2439 }
2440 }
2441 return servers;
2442 }
2443
2444 public String getMucServer() {
2445 List<String> servers = getMucServers();
2446 return servers.size() > 0 ? servers.get(0) : null;
2447 }
2448
2449 public int getTimeToNextAttempt() {
2450 final int additionalTime =
2451 account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
2452 final int interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
2453 final int secondsSinceLast =
2454 (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
2455 return interval - secondsSinceLast;
2456 }
2457
2458 public int getAttempt() {
2459 return this.attempt;
2460 }
2461
2462 public Features getFeatures() {
2463 return this.features;
2464 }
2465
2466 public long getLastSessionEstablished() {
2467 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
2468 return System.currentTimeMillis() - diff;
2469 }
2470
2471 public long getLastConnect() {
2472 return this.lastConnect;
2473 }
2474
2475 public long getLastPingSent() {
2476 return this.lastPingSent;
2477 }
2478
2479 public long getLastDiscoStarted() {
2480 return this.lastDiscoStarted;
2481 }
2482
2483 public long getLastPacketReceived() {
2484 return this.lastPacketReceived;
2485 }
2486
2487 public void sendActive() {
2488 this.sendPacket(new ActivePacket());
2489 }
2490
2491 public void sendInactive() {
2492 this.sendPacket(new InactivePacket());
2493 }
2494
2495 public void resetAttemptCount(boolean resetConnectTime) {
2496 this.attempt = 0;
2497 if (resetConnectTime) {
2498 this.lastConnect = 0;
2499 }
2500 }
2501
2502 public void setInteractive(boolean interactive) {
2503 this.mInteractive = interactive;
2504 }
2505
2506 public Identity getServerIdentity() {
2507 synchronized (this.disco) {
2508 ServiceDiscoveryResult result = disco.get(account.getJid().getDomain());
2509 if (result == null) {
2510 return Identity.UNKNOWN;
2511 }
2512 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
2513 if (id.getType().equals("im")
2514 && id.getCategory().equals("server")
2515 && id.getName() != null) {
2516 switch (id.getName()) {
2517 case "Prosody":
2518 return Identity.PROSODY;
2519 case "ejabberd":
2520 return Identity.EJABBERD;
2521 case "Slack-XMPP":
2522 return Identity.SLACK;
2523 }
2524 }
2525 }
2526 }
2527 return Identity.UNKNOWN;
2528 }
2529
2530 private IqGenerator getIqGenerator() {
2531 return mXmppConnectionService.getIqGenerator();
2532 }
2533
2534 public enum Identity {
2535 FACEBOOK,
2536 SLACK,
2537 EJABBERD,
2538 PROSODY,
2539 NIMBUZZ,
2540 UNKNOWN
2541 }
2542
2543 private class MyKeyManager implements X509KeyManager {
2544 @Override
2545 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
2546 return account.getPrivateKeyAlias();
2547 }
2548
2549 @Override
2550 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
2551 return null;
2552 }
2553
2554 @Override
2555 public X509Certificate[] getCertificateChain(String alias) {
2556 Log.d(Config.LOGTAG, "getting certificate chain");
2557 try {
2558 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
2559 } catch (final Exception e) {
2560 Log.d(Config.LOGTAG, "could not get certificate chain", e);
2561 return new X509Certificate[0];
2562 }
2563 }
2564
2565 @Override
2566 public String[] getClientAliases(String s, Principal[] principals) {
2567 final String alias = account.getPrivateKeyAlias();
2568 return alias != null ? new String[] {alias} : new String[0];
2569 }
2570
2571 @Override
2572 public String[] getServerAliases(String s, Principal[] principals) {
2573 return new String[0];
2574 }
2575
2576 @Override
2577 public PrivateKey getPrivateKey(String alias) {
2578 try {
2579 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
2580 } catch (Exception e) {
2581 return null;
2582 }
2583 }
2584 }
2585
2586 private static class StateChangingError extends Error {
2587 private final Account.State state;
2588
2589 public StateChangingError(Account.State state) {
2590 this.state = state;
2591 }
2592 }
2593
2594 private static class StateChangingException extends IOException {
2595 private final Account.State state;
2596
2597 public StateChangingException(Account.State state) {
2598 this.state = state;
2599 }
2600 }
2601
2602 public class Features {
2603 XmppConnection connection;
2604 private boolean carbonsEnabled = false;
2605 private boolean encryptionEnabled = false;
2606 private boolean blockListRequested = false;
2607
2608 public Features(final XmppConnection connection) {
2609 this.connection = connection;
2610 }
2611
2612 private boolean hasDiscoFeature(final Jid server, final String feature) {
2613 synchronized (XmppConnection.this.disco) {
2614 final ServiceDiscoveryResult sdr = connection.disco.get(server);
2615 return sdr != null && sdr.getFeatures().contains(feature);
2616 }
2617 }
2618
2619 public boolean carbons() {
2620 return hasDiscoFeature(account.getDomain(), Namespace.CARBONS);
2621 }
2622
2623 public boolean commands() {
2624 return hasDiscoFeature(account.getDomain(), Namespace.COMMANDS);
2625 }
2626
2627 public boolean easyOnboardingInvites() {
2628 synchronized (commands) {
2629 return commands.containsKey(Namespace.EASY_ONBOARDING_INVITE);
2630 }
2631 }
2632
2633 public boolean bookmarksConversion() {
2634 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION)
2635 && pepPublishOptions();
2636 }
2637
2638 public boolean avatarConversion() {
2639 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.AVATAR_CONVERSION)
2640 && pepPublishOptions();
2641 }
2642
2643 public boolean blocking() {
2644 return hasDiscoFeature(account.getDomain(), Namespace.BLOCKING);
2645 }
2646
2647 public boolean spamReporting() {
2648 return hasDiscoFeature(account.getDomain(), "urn:xmpp:reporting:reason:spam:0");
2649 }
2650
2651 public boolean flexibleOfflineMessageRetrieval() {
2652 return hasDiscoFeature(
2653 account.getDomain(), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
2654 }
2655
2656 public boolean register() {
2657 return hasDiscoFeature(account.getDomain(), Namespace.REGISTER);
2658 }
2659
2660 public boolean invite() {
2661 return connection.streamFeatures != null
2662 && connection.streamFeatures.hasChild("register", Namespace.INVITE);
2663 }
2664
2665 public boolean sm() {
2666 return streamId != null
2667 || (connection.streamFeatures != null
2668 && connection.streamFeatures.hasChild("sm", Namespace.STREAM_MANAGEMENT));
2669 }
2670
2671 public boolean csi() {
2672 return connection.streamFeatures != null
2673 && connection.streamFeatures.hasChild("csi", Namespace.CSI);
2674 }
2675
2676 public boolean pep() {
2677 synchronized (XmppConnection.this.disco) {
2678 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
2679 return info != null && info.hasIdentity("pubsub", "pep");
2680 }
2681 }
2682
2683 public boolean pepPersistent() {
2684 synchronized (XmppConnection.this.disco) {
2685 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
2686 return info != null
2687 && info.getFeatures()
2688 .contains("http://jabber.org/protocol/pubsub#persistent-items");
2689 }
2690 }
2691
2692 public boolean pepPublishOptions() {
2693 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
2694 }
2695
2696 public boolean pepOmemoWhitelisted() {
2697 return hasDiscoFeature(
2698 account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
2699 }
2700
2701 public boolean mam() {
2702 return MessageArchiveService.Version.has(getAccountFeatures());
2703 }
2704
2705 public List<String> getAccountFeatures() {
2706 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
2707 return result == null ? Collections.emptyList() : result.getFeatures();
2708 }
2709
2710 public boolean push() {
2711 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
2712 || hasDiscoFeature(account.getDomain(), Namespace.PUSH);
2713 }
2714
2715 public boolean rosterVersioning() {
2716 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
2717 }
2718
2719 public void setBlockListRequested(boolean value) {
2720 this.blockListRequested = value;
2721 }
2722
2723 public boolean httpUpload(long filesize) {
2724 if (Config.DISABLE_HTTP_UPLOAD) {
2725 return false;
2726 } else {
2727 for (String namespace :
2728 new String[] {Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
2729 List<Entry<Jid, ServiceDiscoveryResult>> items =
2730 findDiscoItemsByFeature(namespace);
2731 if (items.size() > 0) {
2732 try {
2733 long maxsize =
2734 Long.parseLong(
2735 items.get(0)
2736 .getValue()
2737 .getExtendedDiscoInformation(
2738 namespace, "max-file-size"));
2739 if (filesize <= maxsize) {
2740 return true;
2741 } else {
2742 Log.d(
2743 Config.LOGTAG,
2744 account.getJid().asBareJid()
2745 + ": http upload is not available for files with size "
2746 + filesize
2747 + " (max is "
2748 + maxsize
2749 + ")");
2750 return false;
2751 }
2752 } catch (Exception e) {
2753 return true;
2754 }
2755 }
2756 }
2757 return false;
2758 }
2759 }
2760
2761 public boolean useLegacyHttpUpload() {
2762 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null
2763 && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
2764 }
2765
2766 public long getMaxHttpUploadSize() {
2767 for (String namespace :
2768 new String[] {Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
2769 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
2770 if (items.size() > 0) {
2771 try {
2772 return Long.parseLong(
2773 items.get(0)
2774 .getValue()
2775 .getExtendedDiscoInformation(namespace, "max-file-size"));
2776 } catch (Exception e) {
2777 // ignored
2778 }
2779 }
2780 }
2781 return -1;
2782 }
2783
2784 public boolean stanzaIds() {
2785 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
2786 }
2787
2788 public boolean bookmarks2() {
2789 return Config
2790 .USE_BOOKMARKS2 /* || hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS2_COMPAT)*/;
2791 }
2792
2793 public boolean externalServiceDiscovery() {
2794 return hasDiscoFeature(account.getDomain(), Namespace.EXTERNAL_SERVICE_DISCOVERY);
2795 }
2796 }
2797}