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 boolean nopStreamFeatures;
762 final Element bound = success.findChild("bound", Namespace.BIND2);
763 final Element resumed = success.findChild("resumed", "urn:xmpp:sm:3");
764 final Element failed = success.findChild("failed", "urn:xmpp:sm:3");
765 final Element tokenWrapper = success.findChild("token", Namespace.FAST);
766 final String token = tokenWrapper == null ? null : tokenWrapper.getAttribute("token");
767 if (bound != null && resumed != null) {
768 Log.d(
769 Config.LOGTAG,
770 account.getJid().asBareJid()
771 + ": server sent bound and resumed in SASL2 success");
772 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
773 }
774 final boolean processNopStreamFeatures;
775 if (resumed != null && streamId != null) {
776 processResumed(resumed);
777 } else if (failed != null) {
778 processFailed(failed, false); // wait for new stream features
779 }
780 if (bound != null) {
781 clearIqCallbacks();
782 this.isBound = true;
783 final Element streamManagementEnabled =
784 bound.findChild("enabled", Namespace.STREAM_MANAGEMENT);
785 final Element carbonsEnabled = bound.findChild("enabled", Namespace.CARBONS);
786 final boolean waitForDisco;
787 if (streamManagementEnabled != null) {
788 processEnabled(streamManagementEnabled);
789 waitForDisco = true;
790 } else {
791 //if we did not enable stream management in bind do it now
792 waitForDisco = enableStreamManagement();
793 }
794 if (carbonsEnabled != null) {
795 Log.d(
796 Config.LOGTAG,
797 account.getJid().asBareJid() + ": successfully enabled carbons");
798 features.carbonsEnabled = true;
799 }
800 sendPostBindInitialization(waitForDisco, carbonsEnabled != null);
801 processNopStreamFeatures = true;
802 } else {
803 processNopStreamFeatures = false;
804 }
805 final HashedToken.Mechanism tokenMechanism;
806 if (SaslMechanism.hashedToken(currentSaslMechanism)) {
807 tokenMechanism = ((HashedToken) currentSaslMechanism).getTokenMechanism();
808 } else if (this.hashTokenRequest != null) {
809 tokenMechanism = this.hashTokenRequest;
810 } else {
811 tokenMechanism = null;
812 }
813 if (tokenMechanism != null && !Strings.isNullOrEmpty(token)) {
814 this.account.setFastToken(tokenMechanism,token);
815 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": storing hashed token "+tokenMechanism);
816 }
817 // a successful resume will not send stream features
818 if (processNopStreamFeatures) {
819 processNopStreamFeatures();
820 }
821 }
822 mXmppConnectionService.databaseBackend.updateAccount(account);
823 this.quickStartInProgress = false;
824 if (version == SaslMechanism.Version.SASL) {
825 tagReader.reset();
826 sendStartStream(false, true);
827 final Tag tag = tagReader.readTag();
828 if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
829 processStream();
830 return true;
831 } else {
832 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
833 }
834 } else {
835 return false;
836 }
837 }
838
839 private void processNopStreamFeatures() throws IOException {
840 final Tag tag = tagReader.readTag();
841 if (tag != null && tag.isStart("features", Namespace.STREAMS)) {
842 this.streamFeatures = tagReader.readElement(tag);
843 Log.d(
844 Config.LOGTAG,
845 account.getJid().asBareJid()
846 + ": processed NOP stream features after success: "
847 + XmlHelper.printElementNames(this.streamFeatures));
848 } else {
849 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received " + tag);
850 Log.d(
851 Config.LOGTAG,
852 account.getJid().asBareJid()
853 + ": server did not send stream features after SASL2 success");
854 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
855 }
856 }
857
858 private void processFailure(final Element failure) throws IOException {
859 final SaslMechanism.Version version;
860 try {
861 version = SaslMechanism.Version.of(failure);
862 } catch (final IllegalArgumentException e) {
863 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
864 }
865 Log.d(Config.LOGTAG, failure.toString());
866 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": login failure " + version);
867 if (SaslMechanism.hashedToken(this.saslMechanism)) {
868 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resetting token");
869 account.resetFastToken();
870 mXmppConnectionService.databaseBackend.updateAccount(account);
871 }
872 if (failure.hasChild("temporary-auth-failure")) {
873 throw new StateChangingException(Account.State.TEMPORARY_AUTH_FAILURE);
874 } else if (failure.hasChild("account-disabled")) {
875 final String text = failure.findChildContent("text");
876 if (Strings.isNullOrEmpty(text)) {
877 throw new StateChangingException(Account.State.UNAUTHORIZED);
878 }
879 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
880 if (matcher.find()) {
881 final HttpUrl url;
882 try {
883 url = HttpUrl.get(text.substring(matcher.start(), matcher.end()));
884 } catch (final IllegalArgumentException e) {
885 throw new StateChangingException(Account.State.UNAUTHORIZED);
886 }
887 if (url.isHttps()) {
888 this.redirectionUrl = url;
889 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
890 }
891 }
892 }
893 if (SaslMechanism.hashedToken(this.saslMechanism)) {
894 Log.d(
895 Config.LOGTAG,
896 account.getJid().asBareJid()
897 + ": fast authentication failed. falling back to regular authentication");
898 authenticate();
899 } else {
900 throw new StateChangingException(Account.State.UNAUTHORIZED);
901 }
902 }
903
904 private static SSLSocket sslSocketOrNull(final Socket socket) {
905 if (socket instanceof SSLSocket) {
906 return (SSLSocket) socket;
907 } else {
908 return null;
909 }
910 }
911
912 private void processEnabled(final Element enabled) {
913 final String streamId;
914 if (enabled.getAttributeAsBoolean("resume")) {
915 streamId = enabled.getAttribute("id");
916 Log.d(
917 Config.LOGTAG,
918 account.getJid().asBareJid().toString()
919 + ": stream management enabled (resumable)");
920 } else {
921 Log.d(
922 Config.LOGTAG,
923 account.getJid().asBareJid().toString() + ": stream management enabled");
924 streamId = null;
925 }
926 this.streamId = streamId;
927 this.stanzasReceived = 0;
928 this.inSmacksSession = true;
929 final RequestPacket r = new RequestPacket();
930 tagWriter.writeStanzaAsync(r);
931 }
932
933 private void processResumed(final Element resumed) throws StateChangingException {
934 this.inSmacksSession = true;
935 this.isBound = true;
936 this.tagWriter.writeStanzaAsync(new RequestPacket());
937 lastPacketReceived = SystemClock.elapsedRealtime();
938 final String h = resumed.getAttribute("h");
939 if (h == null) {
940 resetStreamId();
941 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
942 }
943 final int serverCount;
944 try {
945 serverCount = Integer.parseInt(h);
946 } catch (final NumberFormatException e) {
947 resetStreamId();
948 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
949 }
950 final ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
951 final boolean acknowledgedMessages;
952 synchronized (this.mStanzaQueue) {
953 if (serverCount < stanzasSent) {
954 Log.d(
955 Config.LOGTAG,
956 account.getJid().asBareJid() + ": session resumed with lost packages");
957 stanzasSent = serverCount;
958 } else {
959 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": session resumed");
960 }
961 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
962 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
963 failedStanzas.add(mStanzaQueue.valueAt(i));
964 }
965 mStanzaQueue.clear();
966 }
967 if (acknowledgedMessages) {
968 mXmppConnectionService.updateConversationUi();
969 }
970 Log.d(
971 Config.LOGTAG,
972 account.getJid().asBareJid() + ": resending " + failedStanzas.size() + " stanzas");
973 for (final AbstractAcknowledgeableStanza packet : failedStanzas) {
974 if (packet instanceof MessagePacket) {
975 MessagePacket message = (MessagePacket) packet;
976 mXmppConnectionService.markMessage(
977 account,
978 message.getTo().asBareJid(),
979 message.getId(),
980 Message.STATUS_UNSEND);
981 }
982 sendPacket(packet);
983 }
984 changeStatusToOnline();
985 }
986
987 private void changeStatusToOnline() {
988 Log.d(
989 Config.LOGTAG,
990 account.getJid().asBareJid() + ": online with resource " + account.getResource());
991 changeStatus(Account.State.ONLINE);
992 }
993
994 private void processFailed(final Element failed, final boolean sendBindRequest) {
995 final int serverCount;
996 try {
997 serverCount = Integer.parseInt(failed.getAttribute("h"));
998 } catch (final NumberFormatException | NullPointerException e) {
999 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
1000 resetStreamId();
1001 if (sendBindRequest) {
1002 sendBindRequest();
1003 }
1004 return;
1005 }
1006 Log.d(
1007 Config.LOGTAG,
1008 account.getJid().asBareJid()
1009 + ": resumption failed but server acknowledged stanza #"
1010 + serverCount);
1011 final boolean acknowledgedMessages;
1012 synchronized (this.mStanzaQueue) {
1013 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
1014 }
1015 if (acknowledgedMessages) {
1016 mXmppConnectionService.updateConversationUi();
1017 }
1018 resetStreamId();
1019 if (sendBindRequest) {
1020 sendBindRequest();
1021 }
1022 }
1023
1024 private boolean acknowledgeStanzaUpTo(int serverCount) {
1025 if (serverCount > stanzasSent) {
1026 Log.e(
1027 Config.LOGTAG,
1028 "server acknowledged more stanzas than we sent. serverCount="
1029 + serverCount
1030 + ", ourCount="
1031 + stanzasSent);
1032 }
1033 boolean acknowledgedMessages = false;
1034 for (int i = 0; i < mStanzaQueue.size(); ++i) {
1035 if (serverCount >= mStanzaQueue.keyAt(i)) {
1036 if (Config.EXTENDED_SM_LOGGING) {
1037 Log.d(
1038 Config.LOGTAG,
1039 account.getJid().asBareJid()
1040 + ": server acknowledged stanza #"
1041 + mStanzaQueue.keyAt(i));
1042 }
1043 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
1044 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
1045 final MessagePacket packet = (MessagePacket) stanza;
1046 final String id = packet.getId();
1047 final Jid to = packet.getTo();
1048 if (id != null && to != null) {
1049 acknowledgedMessages |=
1050 acknowledgedListener.onMessageAcknowledged(account, to, id);
1051 }
1052 }
1053 mStanzaQueue.removeAt(i);
1054 i--;
1055 }
1056 }
1057 return acknowledgedMessages;
1058 }
1059
1060 private @NonNull Element processPacket(final Tag currentTag, final int packetType)
1061 throws IOException {
1062 final Element element;
1063 switch (packetType) {
1064 case PACKET_IQ:
1065 element = new IqPacket();
1066 break;
1067 case PACKET_MESSAGE:
1068 element = new MessagePacket();
1069 break;
1070 case PACKET_PRESENCE:
1071 element = new PresencePacket();
1072 break;
1073 default:
1074 throw new AssertionError("Should never encounter invalid type");
1075 }
1076 element.setAttributes(currentTag.getAttributes());
1077 Tag nextTag = tagReader.readTag();
1078 if (nextTag == null) {
1079 throw new IOException("interrupted mid tag");
1080 }
1081 while (!nextTag.isEnd(element.getName())) {
1082 if (!nextTag.isNo()) {
1083 element.addChild(tagReader.readElement(nextTag));
1084 }
1085 nextTag = tagReader.readTag();
1086 if (nextTag == null) {
1087 throw new IOException("interrupted mid tag");
1088 }
1089 }
1090 if (stanzasReceived == Integer.MAX_VALUE) {
1091 resetStreamId();
1092 throw new IOException("time to restart the session. cant handle >2 billion pcks");
1093 }
1094 if (inSmacksSession) {
1095 ++stanzasReceived;
1096 } else if (features.sm()) {
1097 Log.d(
1098 Config.LOGTAG,
1099 account.getJid().asBareJid()
1100 + ": not counting stanza("
1101 + element.getClass().getSimpleName()
1102 + "). Not in smacks session.");
1103 }
1104 lastPacketReceived = SystemClock.elapsedRealtime();
1105 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
1106 Log.d(Config.LOGTAG, "[background stanza] " + element);
1107 }
1108 if (element instanceof IqPacket
1109 && (((IqPacket) element).getType() == IqPacket.TYPE.SET)
1110 && element.hasChild("jingle", Namespace.JINGLE)) {
1111 return JinglePacket.upgrade((IqPacket) element);
1112 } else {
1113 return element;
1114 }
1115 }
1116
1117 private void processIq(final Tag currentTag) throws IOException {
1118 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
1119 if (!packet.valid()) {
1120 Log.e(
1121 Config.LOGTAG,
1122 "encountered invalid iq from='"
1123 + packet.getFrom()
1124 + "' to='"
1125 + packet.getTo()
1126 + "'");
1127 return;
1128 }
1129 if (packet instanceof JinglePacket) {
1130 if (this.jingleListener != null) {
1131 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
1132 }
1133 } else {
1134 OnIqPacketReceived callback = null;
1135 synchronized (this.packetCallbacks) {
1136 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple =
1137 packetCallbacks.get(packet.getId());
1138 if (packetCallbackDuple != null) {
1139 // Packets to the server should have responses from the server
1140 if (packetCallbackDuple.first.toServer(account)) {
1141 if (packet.fromServer(account)) {
1142 callback = packetCallbackDuple.second;
1143 packetCallbacks.remove(packet.getId());
1144 } else {
1145 Log.e(
1146 Config.LOGTAG,
1147 account.getJid().asBareJid().toString()
1148 + ": ignoring spoofed iq packet");
1149 }
1150 } else {
1151 if (packet.getFrom() != null
1152 && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
1153 callback = packetCallbackDuple.second;
1154 packetCallbacks.remove(packet.getId());
1155 } else {
1156 Log.e(
1157 Config.LOGTAG,
1158 account.getJid().asBareJid().toString()
1159 + ": ignoring spoofed iq packet");
1160 }
1161 }
1162 } else if (packet.getType() == IqPacket.TYPE.GET
1163 || packet.getType() == IqPacket.TYPE.SET) {
1164 callback = this.unregisteredIqListener;
1165 }
1166 }
1167 if (callback != null) {
1168 try {
1169 callback.onIqPacketReceived(account, packet);
1170 } catch (StateChangingError error) {
1171 throw new StateChangingException(error.state);
1172 }
1173 }
1174 }
1175 }
1176
1177 private void processMessage(final Tag currentTag) throws IOException {
1178 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
1179 if (!packet.valid()) {
1180 Log.e(
1181 Config.LOGTAG,
1182 "encountered invalid message from='"
1183 + packet.getFrom()
1184 + "' to='"
1185 + packet.getTo()
1186 + "'");
1187 return;
1188 }
1189 this.messageListener.onMessagePacketReceived(account, packet);
1190 }
1191
1192 private void processPresence(final Tag currentTag) throws IOException {
1193 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
1194 if (!packet.valid()) {
1195 Log.e(
1196 Config.LOGTAG,
1197 "encountered invalid presence from='"
1198 + packet.getFrom()
1199 + "' to='"
1200 + packet.getTo()
1201 + "'");
1202 return;
1203 }
1204 this.presenceListener.onPresencePacketReceived(account, packet);
1205 }
1206
1207 private void sendStartTLS() throws IOException {
1208 final Tag startTLS = Tag.empty("starttls");
1209 startTLS.setAttribute("xmlns", Namespace.TLS);
1210 tagWriter.writeTag(startTLS);
1211 }
1212
1213 private void switchOverToTls() throws XmlPullParserException, IOException {
1214 tagReader.readTag();
1215 final Socket socket = this.socket;
1216 final SSLSocket sslSocket = upgradeSocketToTls(socket);
1217 tagReader.setInputStream(sslSocket.getInputStream());
1218 tagWriter.setOutputStream(sslSocket.getOutputStream());
1219 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
1220 final boolean quickStart;
1221 try {
1222 quickStart = establishStream(SSLSockets.version(sslSocket));
1223 } catch (final InterruptedException e) {
1224 return;
1225 }
1226 if (quickStart) {
1227 this.quickStartInProgress = true;
1228 }
1229 features.encryptionEnabled = true;
1230 final Tag tag = tagReader.readTag();
1231 if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
1232 SSLSockets.log(account, sslSocket);
1233 processStream();
1234 } else {
1235 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
1236 }
1237 sslSocket.close();
1238 }
1239
1240 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
1241 final SSLSocketFactory sslSocketFactory;
1242 try {
1243 sslSocketFactory = getSSLSocketFactory();
1244 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
1245 throw new StateChangingException(Account.State.TLS_ERROR);
1246 }
1247 final InetAddress address = socket.getInetAddress();
1248 final SSLSocket sslSocket =
1249 (SSLSocket)
1250 sslSocketFactory.createSocket(
1251 socket, address.getHostAddress(), socket.getPort(), true);
1252 SSLSockets.setSecurity(sslSocket);
1253 SSLSockets.setHostname(sslSocket, IDN.toASCII(account.getServer()));
1254 SSLSockets.setApplicationProtocol(sslSocket, "xmpp-client");
1255 final XmppDomainVerifier xmppDomainVerifier = new XmppDomainVerifier();
1256 try {
1257 if (!xmppDomainVerifier.verify(
1258 account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
1259 Log.d(
1260 Config.LOGTAG,
1261 account.getJid().asBareJid()
1262 + ": TLS certificate domain verification failed");
1263 FileBackend.close(sslSocket);
1264 throw new StateChangingException(Account.State.TLS_ERROR_DOMAIN);
1265 }
1266 } catch (final SSLPeerUnverifiedException e) {
1267 FileBackend.close(sslSocket);
1268 throw new StateChangingException(Account.State.TLS_ERROR);
1269 }
1270 return sslSocket;
1271 }
1272
1273 private void processStreamFeatures(final Tag currentTag) throws IOException {
1274 this.streamFeatures = tagReader.readElement(currentTag);
1275 final boolean isSecure = isSecure();
1276 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
1277 if (this.quickStartInProgress) {
1278 if (this.streamFeatures.hasChild("authentication", Namespace.SASL_2)) {
1279 Log.d(
1280 Config.LOGTAG,
1281 account.getJid().asBareJid()
1282 + ": quick start in progress. ignoring features: "
1283 + XmlHelper.printElementNames(this.streamFeatures));
1284 if (SaslMechanism.hashedToken(this.saslMechanism)) {
1285 return;
1286 }
1287 if (isFastTokenAvailable(
1288 this.streamFeatures.findChild("authentication", Namespace.SASL_2))) {
1289 Log.d(
1290 Config.LOGTAG,
1291 account.getJid().asBareJid()
1292 + ": fast token available; resetting quick start");
1293 account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false);
1294 mXmppConnectionService.databaseBackend.updateAccount(account);
1295 }
1296 return;
1297 }
1298 Log.d(
1299 Config.LOGTAG,
1300 account.getJid().asBareJid()
1301 + ": server lost support for SASL 2. quick start not possible");
1302 this.account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false);
1303 mXmppConnectionService.databaseBackend.updateAccount(account);
1304 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1305 }
1306 if (this.streamFeatures.hasChild("starttls", Namespace.TLS)
1307 && !features.encryptionEnabled) {
1308 sendStartTLS();
1309 } else if (this.streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1310 && account.isOptionSet(Account.OPTION_REGISTER)) {
1311 if (isSecure) {
1312 register();
1313 } else {
1314 Log.d(
1315 Config.LOGTAG,
1316 account.getJid().asBareJid()
1317 + ": unable to find STARTTLS for registration process "
1318 + XmlHelper.printElementNames(this.streamFeatures));
1319 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1320 }
1321 } else if (!this.streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1322 && account.isOptionSet(Account.OPTION_REGISTER)) {
1323 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
1324 } else if (this.streamFeatures.hasChild("authentication", Namespace.SASL_2)
1325 && shouldAuthenticate
1326 && isSecure) {
1327 authenticate(SaslMechanism.Version.SASL_2);
1328 } else if (this.streamFeatures.hasChild("mechanisms", Namespace.SASL)
1329 && shouldAuthenticate
1330 && isSecure) {
1331 authenticate(SaslMechanism.Version.SASL);
1332 } else if (this.streamFeatures.hasChild("sm", Namespace.STREAM_MANAGEMENT)
1333 && streamId != null
1334 && !inSmacksSession) {
1335 if (Config.EXTENDED_SM_LOGGING) {
1336 Log.d(
1337 Config.LOGTAG,
1338 account.getJid().asBareJid()
1339 + ": resuming after stanza #"
1340 + stanzasReceived);
1341 }
1342 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived);
1343 this.mSmCatchupMessageCounter.set(0);
1344 this.mWaitingForSmCatchup.set(true);
1345 this.tagWriter.writeStanzaAsync(resume);
1346 } else if (needsBinding) {
1347 if (this.streamFeatures.hasChild("bind", Namespace.BIND) && isSecure) {
1348 sendBindRequest();
1349 } else {
1350 Log.d(
1351 Config.LOGTAG,
1352 account.getJid().asBareJid()
1353 + ": unable to find bind feature "
1354 + XmlHelper.printElementNames(this.streamFeatures));
1355 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1356 }
1357 } else {
1358 Log.d(
1359 Config.LOGTAG,
1360 account.getJid().asBareJid()
1361 + ": received NOP stream features: "
1362 + XmlHelper.printElementNames(this.streamFeatures));
1363 }
1364 }
1365
1366 private void authenticate() throws IOException {
1367 final boolean isSecure = isSecure();
1368 if (isSecure && this.streamFeatures.hasChild("authentication", Namespace.SASL_2)) {authenticate(SaslMechanism.Version.SASL_2);
1369 } else if (isSecure && this.streamFeatures.hasChild("mechanisms", Namespace.SASL)) {
1370 authenticate(SaslMechanism.Version.SASL);
1371 } else {
1372 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1373 }
1374 }
1375
1376 private boolean isSecure() {
1377 return features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
1378 }
1379
1380 private void authenticate(final SaslMechanism.Version version) throws IOException {
1381 final Element authElement;
1382 if (version == SaslMechanism.Version.SASL) {
1383 authElement = this.streamFeatures.findChild("mechanisms", Namespace.SASL);
1384 } else {
1385 authElement = this.streamFeatures.findChild("authentication", Namespace.SASL_2);
1386 }
1387 final Collection<String> mechanisms = SaslMechanism.mechanisms(authElement);
1388 final Element cbElement =
1389 this.streamFeatures.findChild("sasl-channel-binding", Namespace.CHANNEL_BINDING);
1390 final Collection<ChannelBinding> channelBindings = ChannelBinding.of(cbElement);
1391 final SaslMechanism.Factory factory = new SaslMechanism.Factory(account);
1392 final SaslMechanism saslMechanism = factory.of(mechanisms, channelBindings, version, SSLSockets.version(this.socket));
1393 this.saslMechanism = validate(saslMechanism, mechanisms);
1394 final boolean quickStartAvailable;
1395 final String firstMessage = this.saslMechanism.getClientFirstMessage(sslSocketOrNull(this.socket));
1396 final boolean usingFast = SaslMechanism.hashedToken(this.saslMechanism);
1397 final Element authenticate;
1398 if (version == SaslMechanism.Version.SASL) {
1399 authenticate = new Element("auth", Namespace.SASL);
1400 if (!Strings.isNullOrEmpty(firstMessage)) {
1401 authenticate.setContent(firstMessage);
1402 }
1403 quickStartAvailable = false;
1404 } else if (version == SaslMechanism.Version.SASL_2) {
1405 final Element inline = authElement.findChild("inline", Namespace.SASL_2);
1406 final boolean sm = inline != null && inline.hasChild("sm", "urn:xmpp:sm:3");
1407 final HashedToken.Mechanism hashTokenRequest;
1408 if (usingFast) {
1409 hashTokenRequest = null;
1410 } else {
1411 final Element fast = inline == null ? null : inline.findChild("fast", Namespace.FAST);
1412 final Collection<String> fastMechanisms = SaslMechanism.mechanisms(fast);
1413 hashTokenRequest =
1414 HashedToken.Mechanism.best(fastMechanisms, SSLSockets.version(this.socket));
1415 }
1416 final Collection<String> bindFeatures = Bind2.features(inline);
1417 quickStartAvailable =
1418 sm
1419 && bindFeatures != null
1420 && bindFeatures.containsAll(Bind2.QUICKSTART_FEATURES);
1421 if (bindFeatures != null) {
1422 try {
1423 mXmppConnectionService.restoredFromDatabaseLatch.await();
1424 } catch (final InterruptedException e) {
1425 Log.d(
1426 Config.LOGTAG,
1427 account.getJid().asBareJid()
1428 + ": interrupted while waiting for DB restore during SASL2 bind");
1429 return;
1430 }
1431 }
1432 this.hashTokenRequest = hashTokenRequest;
1433 authenticate = generateAuthenticationRequest(firstMessage, usingFast, hashTokenRequest, bindFeatures, sm);
1434 } else {
1435 throw new AssertionError("Missing implementation for " + version);
1436 }
1437
1438 if (account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, quickStartAvailable)) {
1439 mXmppConnectionService.databaseBackend.updateAccount(account);
1440 }
1441
1442 Log.d(
1443 Config.LOGTAG,
1444 account.getJid().toString()
1445 + ": Authenticating with "
1446 + version
1447 + "/"
1448 + this.saslMechanism.getMechanism());
1449 authenticate.setAttribute("mechanism", this.saslMechanism.getMechanism());
1450 tagWriter.writeElement(authenticate);
1451 }
1452
1453 private static boolean isFastTokenAvailable(final Element authentication) {
1454 final Element inline = authentication == null ? null : authentication.findChild("inline");
1455 return inline != null && inline.hasChild("fast", Namespace.FAST);
1456 }
1457
1458 @NonNull
1459 private SaslMechanism validate(final @Nullable SaslMechanism saslMechanism, Collection<String> mechanisms) throws StateChangingException {
1460 if (saslMechanism == null) {
1461 Log.d(
1462 Config.LOGTAG,
1463 account.getJid().asBareJid()
1464 + ": unable to find supported SASL mechanism in "
1465 + mechanisms);
1466 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1467 }
1468 if (SaslMechanism.hashedToken(saslMechanism)) {
1469 return saslMechanism;
1470 }
1471 final int pinnedMechanism = account.getPinnedMechanismPriority();
1472 if (pinnedMechanism > saslMechanism.getPriority()) {
1473 Log.e(
1474 Config.LOGTAG,
1475 "Auth failed. Authentication mechanism "
1476 + saslMechanism.getMechanism()
1477 + " has lower priority ("
1478 + saslMechanism.getPriority()
1479 + ") than pinned priority ("
1480 + pinnedMechanism
1481 + "). Possible downgrade attack?");
1482 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
1483 }
1484 return saslMechanism;
1485 }
1486
1487 private Element generateAuthenticationRequest(final String firstMessage, final boolean usingFast) {
1488 return generateAuthenticationRequest(firstMessage, usingFast, null, Bind2.QUICKSTART_FEATURES, true);
1489 }
1490
1491 private Element generateAuthenticationRequest(
1492 final String firstMessage,
1493 final boolean usingFast,
1494 final HashedToken.Mechanism hashedTokenRequest,
1495 final Collection<String> bind,
1496 final boolean inlineStreamManagement) {
1497 final Element authenticate = new Element("authenticate", Namespace.SASL_2);
1498 if (!Strings.isNullOrEmpty(firstMessage)) {
1499 authenticate.addChild("initial-response").setContent(firstMessage);
1500 }
1501 final Element userAgent = authenticate.addChild("user-agent");
1502 userAgent.setAttribute("id", account.getUuid());
1503 userAgent
1504 .addChild("software")
1505 .setContent(mXmppConnectionService.getString(R.string.app_name));
1506 if (!PhoneHelper.isEmulator()) {
1507 userAgent
1508 .addChild("device")
1509 .setContent(String.format("%s %s", Build.MANUFACTURER, Build.MODEL));
1510 }
1511 if (bind != null) {
1512 authenticate.addChild(generateBindRequest(bind));
1513 }
1514 if (inlineStreamManagement && streamId != null) {
1515 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived);
1516 this.mSmCatchupMessageCounter.set(0);
1517 this.mWaitingForSmCatchup.set(true);
1518 authenticate.addChild(resume);
1519 }
1520 if (hashedTokenRequest != null) {
1521 authenticate
1522 .addChild("request-token", Namespace.FAST)
1523 .setAttribute("mechanism", hashedTokenRequest.name());
1524 }
1525 if (usingFast) {
1526 authenticate.addChild("fast", Namespace.FAST);
1527 }
1528 return authenticate;
1529 }
1530
1531 private Element generateBindRequest(final Collection<String> bindFeatures) {
1532 Log.d(Config.LOGTAG, "inline bind features: " + bindFeatures);
1533 final Element bind = new Element("bind", Namespace.BIND2);
1534 bind.addChild("tag").setContent(mXmppConnectionService.getString(R.string.app_name));
1535 if (bindFeatures.contains(Namespace.CARBONS)) {
1536 bind.addChild("enable", Namespace.CARBONS);
1537 }
1538 if (bindFeatures.contains(Namespace.STREAM_MANAGEMENT)) {
1539 bind.addChild(new EnablePacket());
1540 }
1541 return bind;
1542 }
1543
1544 private void register() {
1545 final String preAuth = account.getKey(Account.KEY_PRE_AUTH_REGISTRATION_TOKEN);
1546 if (preAuth != null && features.invite()) {
1547 final IqPacket preAuthRequest = new IqPacket(IqPacket.TYPE.SET);
1548 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
1549 sendUnmodifiedIqPacket(
1550 preAuthRequest,
1551 (account, response) -> {
1552 if (response.getType() == IqPacket.TYPE.RESULT) {
1553 sendRegistryRequest();
1554 } else {
1555 final String error = response.getErrorCondition();
1556 Log.d(
1557 Config.LOGTAG,
1558 account.getJid().asBareJid()
1559 + ": failed to pre auth. "
1560 + error);
1561 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
1562 }
1563 },
1564 true);
1565 } else {
1566 sendRegistryRequest();
1567 }
1568 }
1569
1570 private void sendRegistryRequest() {
1571 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
1572 register.query(Namespace.REGISTER);
1573 register.setTo(account.getDomain());
1574 sendUnmodifiedIqPacket(
1575 register,
1576 (account, packet) -> {
1577 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1578 return;
1579 }
1580 if (packet.getType() == IqPacket.TYPE.ERROR) {
1581 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1582 }
1583 final Element query = packet.query(Namespace.REGISTER);
1584 if (query.hasChild("username") && (query.hasChild("password"))) {
1585 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
1586 final Element username =
1587 new Element("username").setContent(account.getUsername());
1588 final Element password =
1589 new Element("password").setContent(account.getPassword());
1590 register1.query(Namespace.REGISTER).addChild(username);
1591 register1.query().addChild(password);
1592 register1.setFrom(account.getJid().asBareJid());
1593 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
1594 } else if (query.hasChild("x", Namespace.DATA)) {
1595 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
1596 final Element blob = query.findChild("data", "urn:xmpp:bob");
1597 final String id = packet.getId();
1598 InputStream is;
1599 if (blob != null) {
1600 try {
1601 final String base64Blob = blob.getContent();
1602 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
1603 is = new ByteArrayInputStream(strBlob);
1604 } catch (Exception e) {
1605 is = null;
1606 }
1607 } else {
1608 final boolean useTor =
1609 mXmppConnectionService.useTorToConnect() || account.isOnion();
1610 try {
1611 final String url = data.getValue("url");
1612 final String fallbackUrl = data.getValue("captcha-fallback-url");
1613 if (url != null) {
1614 is = HttpConnectionManager.open(url, useTor);
1615 } else if (fallbackUrl != null) {
1616 is = HttpConnectionManager.open(fallbackUrl, useTor);
1617 } else {
1618 is = null;
1619 }
1620 } catch (final IOException e) {
1621 Log.d(
1622 Config.LOGTAG,
1623 account.getJid().asBareJid() + ": unable to fetch captcha",
1624 e);
1625 is = null;
1626 }
1627 }
1628
1629 if (is != null) {
1630 Bitmap captcha = BitmapFactory.decodeStream(is);
1631 try {
1632 if (mXmppConnectionService.displayCaptchaRequest(
1633 account, id, data, captcha)) {
1634 return;
1635 }
1636 } catch (Exception e) {
1637 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1638 }
1639 }
1640 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1641 } else if (query.hasChild("instructions")
1642 || query.hasChild("x", Namespace.OOB)) {
1643 final String instructions = query.findChildContent("instructions");
1644 final Element oob = query.findChild("x", Namespace.OOB);
1645 final String url = oob == null ? null : oob.findChildContent("url");
1646 if (url != null) {
1647 setAccountCreationFailed(url);
1648 } else if (instructions != null) {
1649 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
1650 if (matcher.find()) {
1651 setAccountCreationFailed(
1652 instructions.substring(matcher.start(), matcher.end()));
1653 }
1654 }
1655 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1656 }
1657 },
1658 true);
1659 }
1660
1661 private void setAccountCreationFailed(final String url) {
1662 final HttpUrl httpUrl = url == null ? null : HttpUrl.parse(url);
1663 if (httpUrl != null && httpUrl.isHttps()) {
1664 this.redirectionUrl = httpUrl;
1665 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1666 }
1667 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1668 }
1669
1670 public HttpUrl getRedirectionUrl() {
1671 return this.redirectionUrl;
1672 }
1673
1674 public void resetEverything() {
1675 resetAttemptCount(true);
1676 resetStreamId();
1677 clearIqCallbacks();
1678 this.stanzasSent = 0;
1679 mStanzaQueue.clear();
1680 this.redirectionUrl = null;
1681 synchronized (this.disco) {
1682 disco.clear();
1683 }
1684 synchronized (this.commands) {
1685 this.commands.clear();
1686 }
1687 this.saslMechanism = null;
1688 }
1689
1690 private void sendBindRequest() {
1691 try {
1692 mXmppConnectionService.restoredFromDatabaseLatch.await();
1693 } catch (InterruptedException e) {
1694 Log.d(
1695 Config.LOGTAG,
1696 account.getJid().asBareJid()
1697 + ": interrupted while waiting for DB restore during bind");
1698 return;
1699 }
1700 clearIqCallbacks();
1701 if (account.getJid().isBareJid()) {
1702 account.setResource(this.createNewResource());
1703 } else {
1704 fixResource(mXmppConnectionService, account);
1705 }
1706 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1707 final String resource =
1708 Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1709 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1710 this.sendUnmodifiedIqPacket(
1711 iq,
1712 (account, packet) -> {
1713 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1714 return;
1715 }
1716 final Element bind = packet.findChild("bind");
1717 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1718 isBound = true;
1719 final Element jid = bind.findChild("jid");
1720 if (jid != null && jid.getContent() != null) {
1721 try {
1722 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1723 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1724 Log.d(
1725 Config.LOGTAG,
1726 account.getJid().asBareJid()
1727 + ": server tried to re-assign domain to "
1728 + assignedJid.getDomain());
1729 throw new StateChangingError(Account.State.BIND_FAILURE);
1730 }
1731 if (account.setJid(assignedJid)) {
1732 Log.d(
1733 Config.LOGTAG,
1734 account.getJid().asBareJid()
1735 + ": jid changed during bind. updating database");
1736 mXmppConnectionService.databaseBackend.updateAccount(account);
1737 }
1738 if (streamFeatures.hasChild("session")
1739 && !streamFeatures
1740 .findChild("session")
1741 .hasChild("optional")) {
1742 sendStartSession();
1743 } else {
1744 final boolean waitForDisco = enableStreamManagement();
1745 sendPostBindInitialization(waitForDisco, false);
1746 }
1747 return;
1748 } catch (final IllegalArgumentException e) {
1749 Log.d(
1750 Config.LOGTAG,
1751 account.getJid().asBareJid()
1752 + ": server reported invalid jid ("
1753 + jid.getContent()
1754 + ") on bind");
1755 }
1756 } else {
1757 Log.d(
1758 Config.LOGTAG,
1759 account.getJid()
1760 + ": disconnecting because of bind failure. (no jid)");
1761 }
1762 } else {
1763 Log.d(
1764 Config.LOGTAG,
1765 account.getJid()
1766 + ": disconnecting because of bind failure ("
1767 + packet);
1768 }
1769 final Element error = packet.findChild("error");
1770 if (packet.getType() == IqPacket.TYPE.ERROR
1771 && error != null
1772 && error.hasChild("conflict")) {
1773 account.setResource(createNewResource());
1774 }
1775 throw new StateChangingError(Account.State.BIND_FAILURE);
1776 },
1777 true);
1778 }
1779
1780 private void clearIqCallbacks() {
1781 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1782 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1783 synchronized (this.packetCallbacks) {
1784 if (this.packetCallbacks.size() == 0) {
1785 return;
1786 }
1787 Log.d(
1788 Config.LOGTAG,
1789 account.getJid().asBareJid()
1790 + ": clearing "
1791 + this.packetCallbacks.size()
1792 + " iq callbacks");
1793 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator =
1794 this.packetCallbacks.values().iterator();
1795 while (iterator.hasNext()) {
1796 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1797 callbacks.add(entry.second);
1798 iterator.remove();
1799 }
1800 }
1801 for (OnIqPacketReceived callback : callbacks) {
1802 try {
1803 callback.onIqPacketReceived(account, failurePacket);
1804 } catch (StateChangingError error) {
1805 Log.d(
1806 Config.LOGTAG,
1807 account.getJid().asBareJid()
1808 + ": caught StateChangingError("
1809 + error.state.toString()
1810 + ") while clearing callbacks");
1811 // ignore
1812 }
1813 }
1814 Log.d(
1815 Config.LOGTAG,
1816 account.getJid().asBareJid()
1817 + ": done clearing iq callbacks. "
1818 + this.packetCallbacks.size()
1819 + " left");
1820 }
1821
1822 public void sendDiscoTimeout() {
1823 if (mWaitForDisco.compareAndSet(true, false)) {
1824 Log.d(
1825 Config.LOGTAG,
1826 account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1827 finalizeBind();
1828 }
1829 }
1830
1831 private void sendStartSession() {
1832 Log.d(
1833 Config.LOGTAG,
1834 account.getJid().asBareJid() + ": sending legacy session to outdated server");
1835 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1836 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1837 this.sendUnmodifiedIqPacket(
1838 startSession,
1839 (account, packet) -> {
1840 if (packet.getType() == IqPacket.TYPE.RESULT) {
1841 final boolean waitForDisco = enableStreamManagement();
1842 sendPostBindInitialization(waitForDisco, false);
1843 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1844 throw new StateChangingError(Account.State.SESSION_FAILURE);
1845 }
1846 },
1847 true);
1848 }
1849
1850 private boolean enableStreamManagement() {
1851 final boolean streamManagement =
1852 this.streamFeatures.hasChild("sm", Namespace.STREAM_MANAGEMENT);
1853 if (streamManagement) {
1854 synchronized (this.mStanzaQueue) {
1855 final EnablePacket enable = new EnablePacket();
1856 tagWriter.writeStanzaAsync(enable);
1857 stanzasSent = 0;
1858 mStanzaQueue.clear();
1859 }
1860 return true;
1861 } else {
1862 return false;
1863 }
1864 }
1865
1866 private void sendPostBindInitialization(
1867 final boolean waitForDisco, final boolean carbonsEnabled) {
1868 features.carbonsEnabled = carbonsEnabled;
1869 features.blockListRequested = false;
1870 synchronized (this.disco) {
1871 this.disco.clear();
1872 }
1873 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1874 mPendingServiceDiscoveries.set(0);
1875 if (!waitForDisco
1876 || Patches.DISCO_EXCEPTIONS.contains(
1877 account.getJid().getDomain().toEscapedString())) {
1878 Log.d(
1879 Config.LOGTAG,
1880 account.getJid().asBareJid() + ": do not wait for service discovery");
1881 mWaitForDisco.set(false);
1882 } else {
1883 mWaitForDisco.set(true);
1884 }
1885 lastDiscoStarted = SystemClock.elapsedRealtime();
1886 mXmppConnectionService.scheduleWakeUpCall(
1887 Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1888 final Element caps = streamFeatures.findChild("c");
1889 final String hash = caps == null ? null : caps.getAttribute("hash");
1890 final String ver = caps == null ? null : caps.getAttribute("ver");
1891 ServiceDiscoveryResult discoveryResult = null;
1892 if (hash != null && ver != null) {
1893 discoveryResult =
1894 mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1895 }
1896 final boolean requestDiscoItemsFirst =
1897 !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1898 if (requestDiscoItemsFirst) {
1899 sendServiceDiscoveryItems(account.getDomain());
1900 }
1901 if (discoveryResult == null) {
1902 sendServiceDiscoveryInfo(account.getDomain());
1903 } else {
1904 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1905 disco.put(account.getDomain(), discoveryResult);
1906 }
1907 discoverMamPreferences();
1908 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1909 if (!requestDiscoItemsFirst) {
1910 sendServiceDiscoveryItems(account.getDomain());
1911 }
1912
1913 if (!mWaitForDisco.get()) {
1914 finalizeBind();
1915 }
1916 this.lastSessionStarted = SystemClock.elapsedRealtime();
1917 }
1918
1919 private void sendServiceDiscoveryInfo(final Jid jid) {
1920 mPendingServiceDiscoveries.incrementAndGet();
1921 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1922 iq.setTo(jid);
1923 iq.query("http://jabber.org/protocol/disco#info");
1924 this.sendIqPacket(
1925 iq,
1926 (account, packet) -> {
1927 if (packet.getType() == IqPacket.TYPE.RESULT) {
1928 boolean advancedStreamFeaturesLoaded;
1929 synchronized (XmppConnection.this.disco) {
1930 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1931 if (jid.equals(account.getDomain())) {
1932 mXmppConnectionService.databaseBackend.insertDiscoveryResult(
1933 result);
1934 }
1935 disco.put(jid, result);
1936 advancedStreamFeaturesLoaded =
1937 disco.containsKey(account.getDomain())
1938 && disco.containsKey(account.getJid().asBareJid());
1939 }
1940 if (advancedStreamFeaturesLoaded
1941 && (jid.equals(account.getDomain())
1942 || jid.equals(account.getJid().asBareJid()))) {
1943 enableAdvancedStreamFeatures();
1944 }
1945 } else if (packet.getType() == IqPacket.TYPE.ERROR) {
1946 Log.d(
1947 Config.LOGTAG,
1948 account.getJid().asBareJid()
1949 + ": could not query disco info for "
1950 + jid.toString());
1951 final boolean serverOrAccount =
1952 jid.equals(account.getDomain())
1953 || jid.equals(account.getJid().asBareJid());
1954 final boolean advancedStreamFeaturesLoaded;
1955 if (serverOrAccount) {
1956 synchronized (XmppConnection.this.disco) {
1957 disco.put(jid, ServiceDiscoveryResult.empty());
1958 advancedStreamFeaturesLoaded =
1959 disco.containsKey(account.getDomain())
1960 && disco.containsKey(account.getJid().asBareJid());
1961 }
1962 } else {
1963 advancedStreamFeaturesLoaded = false;
1964 }
1965 if (advancedStreamFeaturesLoaded) {
1966 enableAdvancedStreamFeatures();
1967 }
1968 }
1969 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1970 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1971 && mWaitForDisco.compareAndSet(true, false)) {
1972 finalizeBind();
1973 }
1974 }
1975 });
1976 }
1977
1978 private void discoverMamPreferences() {
1979 IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1980 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1981 sendIqPacket(
1982 request,
1983 (account, response) -> {
1984 if (response.getType() == IqPacket.TYPE.RESULT) {
1985 Element prefs =
1986 response.findChild(
1987 "prefs", MessageArchiveService.Version.MAM_2.namespace);
1988 isMamPreferenceAlways =
1989 "always"
1990 .equals(
1991 prefs == null
1992 ? null
1993 : prefs.getAttribute("default"));
1994 }
1995 });
1996 }
1997
1998 private void discoverCommands() {
1999 final IqPacket request = new IqPacket(IqPacket.TYPE.GET);
2000 request.setTo(account.getDomain());
2001 request.addChild("query", Namespace.DISCO_ITEMS).setAttribute("node", Namespace.COMMANDS);
2002 sendIqPacket(
2003 request,
2004 (account, response) -> {
2005 if (response.getType() == IqPacket.TYPE.RESULT) {
2006 final Element query = response.findChild("query", Namespace.DISCO_ITEMS);
2007 if (query == null) {
2008 return;
2009 }
2010 final HashMap<String, Jid> commands = new HashMap<>();
2011 for (final Element child : query.getChildren()) {
2012 if ("item".equals(child.getName())) {
2013 final String node = child.getAttribute("node");
2014 final Jid jid = child.getAttributeAsJid("jid");
2015 if (node != null && jid != null) {
2016 commands.put(node, jid);
2017 }
2018 }
2019 }
2020 synchronized (this.commands) {
2021 this.commands.clear();
2022 this.commands.putAll(commands);
2023 }
2024 }
2025 });
2026 }
2027
2028 public boolean isMamPreferenceAlways() {
2029 return isMamPreferenceAlways;
2030 }
2031
2032 private void finalizeBind() {
2033 if (bindListener != null) {
2034 bindListener.onBind(account);
2035 }
2036 changeStatusToOnline();
2037 }
2038
2039 private void enableAdvancedStreamFeatures() {
2040 if (getFeatures().blocking() && !features.blockListRequested) {
2041 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
2042 this.sendIqPacket(
2043 getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
2044 }
2045 for (final OnAdvancedStreamFeaturesLoaded listener :
2046 advancedStreamFeaturesLoadedListeners) {
2047 listener.onAdvancedStreamFeaturesAvailable(account);
2048 }
2049 if (getFeatures().carbons() && !features.carbonsEnabled) {
2050 sendEnableCarbons();
2051 }
2052 if (getFeatures().commands()) {
2053 discoverCommands();
2054 }
2055 }
2056
2057 private void sendServiceDiscoveryItems(final Jid server) {
2058 mPendingServiceDiscoveries.incrementAndGet();
2059 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
2060 iq.setTo(server.getDomain());
2061 iq.query("http://jabber.org/protocol/disco#items");
2062 this.sendIqPacket(
2063 iq,
2064 (account, packet) -> {
2065 if (packet.getType() == IqPacket.TYPE.RESULT) {
2066 final HashSet<Jid> items = new HashSet<>();
2067 final List<Element> elements = packet.query().getChildren();
2068 for (final Element element : elements) {
2069 if (element.getName().equals("item")) {
2070 final Jid jid =
2071 InvalidJid.getNullForInvalid(
2072 element.getAttributeAsJid("jid"));
2073 if (jid != null && !jid.equals(account.getDomain())) {
2074 items.add(jid);
2075 }
2076 }
2077 }
2078 for (Jid jid : items) {
2079 sendServiceDiscoveryInfo(jid);
2080 }
2081 } else {
2082 Log.d(
2083 Config.LOGTAG,
2084 account.getJid().asBareJid()
2085 + ": could not query disco items of "
2086 + server);
2087 }
2088 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
2089 if (mPendingServiceDiscoveries.decrementAndGet() == 0
2090 && mWaitForDisco.compareAndSet(true, false)) {
2091 finalizeBind();
2092 }
2093 }
2094 });
2095 }
2096
2097 private void sendEnableCarbons() {
2098 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
2099 iq.addChild("enable", Namespace.CARBONS);
2100 this.sendIqPacket(
2101 iq,
2102 (account, packet) -> {
2103 if (packet.getType() == IqPacket.TYPE.RESULT) {
2104 Log.d(
2105 Config.LOGTAG,
2106 account.getJid().asBareJid() + ": successfully enabled carbons");
2107 features.carbonsEnabled = true;
2108 } else {
2109 Log.d(
2110 Config.LOGTAG,
2111 account.getJid().asBareJid()
2112 + ": could not enable carbons "
2113 + packet);
2114 }
2115 });
2116 }
2117
2118 private void processStreamError(final Tag currentTag) throws IOException {
2119 final Element streamError = tagReader.readElement(currentTag);
2120 if (streamError == null) {
2121 return;
2122 }
2123 if (streamError.hasChild("conflict")) {
2124 account.setResource(createNewResource());
2125 Log.d(
2126 Config.LOGTAG,
2127 account.getJid().asBareJid()
2128 + ": switching resource due to conflict ("
2129 + account.getResource()
2130 + ")");
2131 throw new IOException();
2132 } else if (streamError.hasChild("host-unknown")) {
2133 throw new StateChangingException(Account.State.HOST_UNKNOWN);
2134 } else if (streamError.hasChild("policy-violation")) {
2135 this.lastConnect = SystemClock.elapsedRealtime();
2136 final String text = streamError.findChildContent("text");
2137 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": policy violation. " + text);
2138 failPendingMessages(text);
2139 throw new StateChangingException(Account.State.POLICY_VIOLATION);
2140 } else {
2141 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError);
2142 throw new StateChangingException(Account.State.STREAM_ERROR);
2143 }
2144 }
2145
2146 private void failPendingMessages(final String error) {
2147 synchronized (this.mStanzaQueue) {
2148 for (int i = 0; i < mStanzaQueue.size(); ++i) {
2149 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
2150 if (stanza instanceof MessagePacket) {
2151 final MessagePacket packet = (MessagePacket) stanza;
2152 final String id = packet.getId();
2153 final Jid to = packet.getTo();
2154 mXmppConnectionService.markMessage(
2155 account, to.asBareJid(), id, Message.STATUS_SEND_FAILED, error);
2156 }
2157 }
2158 }
2159 }
2160
2161 private boolean establishStream(final SSLSockets.Version sslVersion)
2162 throws IOException, InterruptedException {
2163 final SaslMechanism quickStartMechanism =
2164 SaslMechanism.ensureAvailable(account.getQuickStartMechanism(), sslVersion);
2165 final boolean secureConnection = sslVersion != SSLSockets.Version.NONE;
2166 if (secureConnection
2167 && Config.QUICKSTART_ENABLED
2168 && quickStartMechanism != null
2169 && account.isOptionSet(Account.OPTION_QUICKSTART_AVAILABLE)) {
2170 mXmppConnectionService.restoredFromDatabaseLatch.await();
2171 this.saslMechanism = quickStartMechanism;
2172 final boolean usingFast = quickStartMechanism instanceof HashedToken;
2173 final Element authenticate =
2174 generateAuthenticationRequest(quickStartMechanism.getClientFirstMessage(sslSocketOrNull(this.socket)), usingFast);
2175 authenticate.setAttribute("mechanism", quickStartMechanism.getMechanism());
2176 sendStartStream(true, false);
2177 tagWriter.writeElement(authenticate);
2178 Log.d(
2179 Config.LOGTAG,
2180 account.getJid().toString()
2181 + ": quick start with "
2182 + quickStartMechanism.getMechanism());
2183 return true;
2184 } else {
2185 sendStartStream(secureConnection, true);
2186 return false;
2187 }
2188 }
2189
2190 private void sendStartStream(final boolean from, final boolean flush) throws IOException {
2191 final Tag stream = Tag.start("stream:stream");
2192 stream.setAttribute("to", account.getServer());
2193 if (from) {
2194 stream.setAttribute("from", account.getJid().asBareJid().toEscapedString());
2195 }
2196 stream.setAttribute("version", "1.0");
2197 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
2198 stream.setAttribute("xmlns", "jabber:client");
2199 stream.setAttribute("xmlns:stream", Namespace.STREAMS);
2200 tagWriter.writeTag(stream, flush);
2201 }
2202
2203 private String createNewResource() {
2204 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
2205 }
2206
2207 private String nextRandomId() {
2208 return nextRandomId(false);
2209 }
2210
2211 private String nextRandomId(final boolean s) {
2212 return CryptoHelper.random(s ? 3 : 9);
2213 }
2214
2215 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
2216 packet.setFrom(account.getJid());
2217 return this.sendUnmodifiedIqPacket(packet, callback, false);
2218 }
2219
2220 public synchronized String sendUnmodifiedIqPacket(
2221 final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
2222 if (packet.getId() == null) {
2223 packet.setAttribute("id", nextRandomId());
2224 }
2225 if (callback != null) {
2226 synchronized (this.packetCallbacks) {
2227 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
2228 }
2229 }
2230 this.sendPacket(packet, force);
2231 return packet.getId();
2232 }
2233
2234 public void sendMessagePacket(final MessagePacket packet) {
2235 this.sendPacket(packet);
2236 }
2237
2238 public void sendPresencePacket(final PresencePacket packet) {
2239 this.sendPacket(packet);
2240 }
2241
2242 private synchronized void sendPacket(final AbstractStanza packet) {
2243 sendPacket(packet, false);
2244 }
2245
2246 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
2247 if (stanzasSent == Integer.MAX_VALUE) {
2248 resetStreamId();
2249 disconnect(true);
2250 return;
2251 }
2252 synchronized (this.mStanzaQueue) {
2253 if (force || isBound) {
2254 tagWriter.writeStanzaAsync(packet);
2255 } else {
2256 Log.d(
2257 Config.LOGTAG,
2258 account.getJid().asBareJid()
2259 + " do not write stanza to unbound stream "
2260 + packet.toString());
2261 }
2262 if (packet instanceof AbstractAcknowledgeableStanza) {
2263 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
2264
2265 if (this.mStanzaQueue.size() != 0) {
2266 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
2267 if (currentHighestKey != stanzasSent) {
2268 throw new AssertionError("Stanza count messed up");
2269 }
2270 }
2271
2272 ++stanzasSent;
2273 this.mStanzaQueue.append(stanzasSent, stanza);
2274 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
2275 if (Config.EXTENDED_SM_LOGGING) {
2276 Log.d(
2277 Config.LOGTAG,
2278 account.getJid().asBareJid()
2279 + ": requesting ack for message stanza #"
2280 + stanzasSent);
2281 }
2282 tagWriter.writeStanzaAsync(new RequestPacket());
2283 }
2284 }
2285 }
2286 }
2287
2288 public void sendPing() {
2289 if (!r()) {
2290 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
2291 iq.setFrom(account.getJid());
2292 iq.addChild("ping", Namespace.PING);
2293 this.sendIqPacket(iq, null);
2294 }
2295 this.lastPingSent = SystemClock.elapsedRealtime();
2296 }
2297
2298 public void setOnMessagePacketReceivedListener(final OnMessagePacketReceived listener) {
2299 this.messageListener = listener;
2300 }
2301
2302 public void setOnUnregisteredIqPacketReceivedListener(final OnIqPacketReceived listener) {
2303 this.unregisteredIqListener = listener;
2304 }
2305
2306 public void setOnPresencePacketReceivedListener(final OnPresencePacketReceived listener) {
2307 this.presenceListener = listener;
2308 }
2309
2310 public void setOnJinglePacketReceivedListener(final OnJinglePacketReceived listener) {
2311 this.jingleListener = listener;
2312 }
2313
2314 public void setOnStatusChangedListener(final OnStatusChanged listener) {
2315 this.statusListener = listener;
2316 }
2317
2318 public void setOnBindListener(final OnBindListener listener) {
2319 this.bindListener = listener;
2320 }
2321
2322 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
2323 this.acknowledgedListener = listener;
2324 }
2325
2326 public void addOnAdvancedStreamFeaturesAvailableListener(
2327 final OnAdvancedStreamFeaturesLoaded listener) {
2328 this.advancedStreamFeaturesLoadedListeners.add(listener);
2329 }
2330
2331 private void forceCloseSocket() {
2332 FileBackend.close(this.socket);
2333 FileBackend.close(this.tagReader);
2334 }
2335
2336 public void interrupt() {
2337 if (this.mThread != null) {
2338 this.mThread.interrupt();
2339 }
2340 }
2341
2342 public void disconnect(final boolean force) {
2343 interrupt();
2344 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
2345 if (force) {
2346 forceCloseSocket();
2347 } else {
2348 final TagWriter currentTagWriter = this.tagWriter;
2349 if (currentTagWriter.isActive()) {
2350 currentTagWriter.finish();
2351 final Socket currentSocket = this.socket;
2352 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
2353 try {
2354 currentTagWriter.await(1, TimeUnit.SECONDS);
2355 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
2356 currentTagWriter.writeTag(Tag.end("stream:stream"));
2357 if (streamCountDownLatch != null) {
2358 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
2359 Log.d(
2360 Config.LOGTAG,
2361 account.getJid().asBareJid() + ": remote ended stream");
2362 } else {
2363 Log.d(
2364 Config.LOGTAG,
2365 account.getJid().asBareJid()
2366 + ": remote has not closed socket. force closing");
2367 }
2368 }
2369 } catch (InterruptedException e) {
2370 Log.d(
2371 Config.LOGTAG,
2372 account.getJid().asBareJid()
2373 + ": interrupted while gracefully closing stream");
2374 } catch (final IOException e) {
2375 Log.d(
2376 Config.LOGTAG,
2377 account.getJid().asBareJid()
2378 + ": io exception during disconnect ("
2379 + e.getMessage()
2380 + ")");
2381 } finally {
2382 FileBackend.close(currentSocket);
2383 }
2384 } else {
2385 forceCloseSocket();
2386 }
2387 }
2388 }
2389
2390 private void resetStreamId() {
2391 this.streamId = null;
2392 }
2393
2394 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
2395 synchronized (this.disco) {
2396 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
2397 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
2398 if (cursor.getValue().getFeatures().contains(feature)) {
2399 items.add(cursor);
2400 }
2401 }
2402 return items;
2403 }
2404 }
2405
2406 public Jid findDiscoItemByFeature(final String feature) {
2407 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
2408 if (items.size() >= 1) {
2409 return items.get(0).getKey();
2410 }
2411 return null;
2412 }
2413
2414 public boolean r() {
2415 if (getFeatures().sm()) {
2416 this.tagWriter.writeStanzaAsync(new RequestPacket());
2417 return true;
2418 } else {
2419 return false;
2420 }
2421 }
2422
2423 public List<String> getMucServersWithholdAccount() {
2424 final List<String> servers = getMucServers();
2425 servers.remove(account.getDomain().toEscapedString());
2426 return servers;
2427 }
2428
2429 public List<String> getMucServers() {
2430 List<String> servers = new ArrayList<>();
2431 synchronized (this.disco) {
2432 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
2433 final ServiceDiscoveryResult value = cursor.getValue();
2434 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
2435 && value.hasIdentity("conference", "text")
2436 && !value.getFeatures().contains("jabber:iq:gateway")
2437 && !value.hasIdentity("conference", "irc")) {
2438 servers.add(cursor.getKey().toString());
2439 }
2440 }
2441 }
2442 return servers;
2443 }
2444
2445 public String getMucServer() {
2446 List<String> servers = getMucServers();
2447 return servers.size() > 0 ? servers.get(0) : null;
2448 }
2449
2450 public int getTimeToNextAttempt() {
2451 final int additionalTime =
2452 account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
2453 final int interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
2454 final int secondsSinceLast =
2455 (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
2456 return interval - secondsSinceLast;
2457 }
2458
2459 public int getAttempt() {
2460 return this.attempt;
2461 }
2462
2463 public Features getFeatures() {
2464 return this.features;
2465 }
2466
2467 public long getLastSessionEstablished() {
2468 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
2469 return System.currentTimeMillis() - diff;
2470 }
2471
2472 public long getLastConnect() {
2473 return this.lastConnect;
2474 }
2475
2476 public long getLastPingSent() {
2477 return this.lastPingSent;
2478 }
2479
2480 public long getLastDiscoStarted() {
2481 return this.lastDiscoStarted;
2482 }
2483
2484 public long getLastPacketReceived() {
2485 return this.lastPacketReceived;
2486 }
2487
2488 public void sendActive() {
2489 this.sendPacket(new ActivePacket());
2490 }
2491
2492 public void sendInactive() {
2493 this.sendPacket(new InactivePacket());
2494 }
2495
2496 public void resetAttemptCount(boolean resetConnectTime) {
2497 this.attempt = 0;
2498 if (resetConnectTime) {
2499 this.lastConnect = 0;
2500 }
2501 }
2502
2503 public void setInteractive(boolean interactive) {
2504 this.mInteractive = interactive;
2505 }
2506
2507 public Identity getServerIdentity() {
2508 synchronized (this.disco) {
2509 ServiceDiscoveryResult result = disco.get(account.getJid().getDomain());
2510 if (result == null) {
2511 return Identity.UNKNOWN;
2512 }
2513 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
2514 if (id.getType().equals("im")
2515 && id.getCategory().equals("server")
2516 && id.getName() != null) {
2517 switch (id.getName()) {
2518 case "Prosody":
2519 return Identity.PROSODY;
2520 case "ejabberd":
2521 return Identity.EJABBERD;
2522 case "Slack-XMPP":
2523 return Identity.SLACK;
2524 }
2525 }
2526 }
2527 }
2528 return Identity.UNKNOWN;
2529 }
2530
2531 private IqGenerator getIqGenerator() {
2532 return mXmppConnectionService.getIqGenerator();
2533 }
2534
2535 public enum Identity {
2536 FACEBOOK,
2537 SLACK,
2538 EJABBERD,
2539 PROSODY,
2540 NIMBUZZ,
2541 UNKNOWN
2542 }
2543
2544 private class MyKeyManager implements X509KeyManager {
2545 @Override
2546 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
2547 return account.getPrivateKeyAlias();
2548 }
2549
2550 @Override
2551 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
2552 return null;
2553 }
2554
2555 @Override
2556 public X509Certificate[] getCertificateChain(String alias) {
2557 Log.d(Config.LOGTAG, "getting certificate chain");
2558 try {
2559 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
2560 } catch (final Exception e) {
2561 Log.d(Config.LOGTAG, "could not get certificate chain", e);
2562 return new X509Certificate[0];
2563 }
2564 }
2565
2566 @Override
2567 public String[] getClientAliases(String s, Principal[] principals) {
2568 final String alias = account.getPrivateKeyAlias();
2569 return alias != null ? new String[] {alias} : new String[0];
2570 }
2571
2572 @Override
2573 public String[] getServerAliases(String s, Principal[] principals) {
2574 return new String[0];
2575 }
2576
2577 @Override
2578 public PrivateKey getPrivateKey(String alias) {
2579 try {
2580 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
2581 } catch (Exception e) {
2582 return null;
2583 }
2584 }
2585 }
2586
2587 private static class StateChangingError extends Error {
2588 private final Account.State state;
2589
2590 public StateChangingError(Account.State state) {
2591 this.state = state;
2592 }
2593 }
2594
2595 private static class StateChangingException extends IOException {
2596 private final Account.State state;
2597
2598 public StateChangingException(Account.State state) {
2599 this.state = state;
2600 }
2601 }
2602
2603 public class Features {
2604 XmppConnection connection;
2605 private boolean carbonsEnabled = false;
2606 private boolean encryptionEnabled = false;
2607 private boolean blockListRequested = false;
2608
2609 public Features(final XmppConnection connection) {
2610 this.connection = connection;
2611 }
2612
2613 private boolean hasDiscoFeature(final Jid server, final String feature) {
2614 synchronized (XmppConnection.this.disco) {
2615 final ServiceDiscoveryResult sdr = connection.disco.get(server);
2616 return sdr != null && sdr.getFeatures().contains(feature);
2617 }
2618 }
2619
2620 public boolean carbons() {
2621 return hasDiscoFeature(account.getDomain(), Namespace.CARBONS);
2622 }
2623
2624 public boolean commands() {
2625 return hasDiscoFeature(account.getDomain(), Namespace.COMMANDS);
2626 }
2627
2628 public boolean easyOnboardingInvites() {
2629 synchronized (commands) {
2630 return commands.containsKey(Namespace.EASY_ONBOARDING_INVITE);
2631 }
2632 }
2633
2634 public boolean bookmarksConversion() {
2635 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION)
2636 && pepPublishOptions();
2637 }
2638
2639 public boolean avatarConversion() {
2640 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.AVATAR_CONVERSION)
2641 && pepPublishOptions();
2642 }
2643
2644 public boolean blocking() {
2645 return hasDiscoFeature(account.getDomain(), Namespace.BLOCKING);
2646 }
2647
2648 public boolean spamReporting() {
2649 return hasDiscoFeature(account.getDomain(), "urn:xmpp:reporting:reason:spam:0");
2650 }
2651
2652 public boolean flexibleOfflineMessageRetrieval() {
2653 return hasDiscoFeature(
2654 account.getDomain(), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
2655 }
2656
2657 public boolean register() {
2658 return hasDiscoFeature(account.getDomain(), Namespace.REGISTER);
2659 }
2660
2661 public boolean invite() {
2662 return connection.streamFeatures != null
2663 && connection.streamFeatures.hasChild("register", Namespace.INVITE);
2664 }
2665
2666 public boolean sm() {
2667 return streamId != null
2668 || (connection.streamFeatures != null
2669 && connection.streamFeatures.hasChild("sm"));
2670 }
2671
2672 public boolean csi() {
2673 return connection.streamFeatures != null
2674 && connection.streamFeatures.hasChild("csi", Namespace.CSI);
2675 }
2676
2677 public boolean pep() {
2678 synchronized (XmppConnection.this.disco) {
2679 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
2680 return info != null && info.hasIdentity("pubsub", "pep");
2681 }
2682 }
2683
2684 public boolean pepPersistent() {
2685 synchronized (XmppConnection.this.disco) {
2686 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
2687 return info != null
2688 && info.getFeatures()
2689 .contains("http://jabber.org/protocol/pubsub#persistent-items");
2690 }
2691 }
2692
2693 public boolean pepPublishOptions() {
2694 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
2695 }
2696
2697 public boolean pepOmemoWhitelisted() {
2698 return hasDiscoFeature(
2699 account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
2700 }
2701
2702 public boolean mam() {
2703 return MessageArchiveService.Version.has(getAccountFeatures());
2704 }
2705
2706 public List<String> getAccountFeatures() {
2707 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
2708 return result == null ? Collections.emptyList() : result.getFeatures();
2709 }
2710
2711 public boolean push() {
2712 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
2713 || hasDiscoFeature(account.getDomain(), Namespace.PUSH);
2714 }
2715
2716 public boolean rosterVersioning() {
2717 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
2718 }
2719
2720 public void setBlockListRequested(boolean value) {
2721 this.blockListRequested = value;
2722 }
2723
2724 public boolean httpUpload(long filesize) {
2725 if (Config.DISABLE_HTTP_UPLOAD) {
2726 return false;
2727 } else {
2728 for (String namespace :
2729 new String[] {Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
2730 List<Entry<Jid, ServiceDiscoveryResult>> items =
2731 findDiscoItemsByFeature(namespace);
2732 if (items.size() > 0) {
2733 try {
2734 long maxsize =
2735 Long.parseLong(
2736 items.get(0)
2737 .getValue()
2738 .getExtendedDiscoInformation(
2739 namespace, "max-file-size"));
2740 if (filesize <= maxsize) {
2741 return true;
2742 } else {
2743 Log.d(
2744 Config.LOGTAG,
2745 account.getJid().asBareJid()
2746 + ": http upload is not available for files with size "
2747 + filesize
2748 + " (max is "
2749 + maxsize
2750 + ")");
2751 return false;
2752 }
2753 } catch (Exception e) {
2754 return true;
2755 }
2756 }
2757 }
2758 return false;
2759 }
2760 }
2761
2762 public boolean useLegacyHttpUpload() {
2763 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null
2764 && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
2765 }
2766
2767 public long getMaxHttpUploadSize() {
2768 for (String namespace :
2769 new String[] {Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
2770 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
2771 if (items.size() > 0) {
2772 try {
2773 return Long.parseLong(
2774 items.get(0)
2775 .getValue()
2776 .getExtendedDiscoInformation(namespace, "max-file-size"));
2777 } catch (Exception e) {
2778 // ignored
2779 }
2780 }
2781 }
2782 return -1;
2783 }
2784
2785 public boolean stanzaIds() {
2786 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
2787 }
2788
2789 public boolean bookmarks2() {
2790 return Config.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}