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 = (resumed != null && streamId != null) || bound != null;
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 }
802 final HashedToken.Mechanism tokenMechanism;
803 if (SaslMechanism.hashedToken(currentSaslMechanism)) {
804 tokenMechanism = ((HashedToken) currentSaslMechanism).getTokenMechanism();
805 } else if (this.hashTokenRequest != null) {
806 tokenMechanism = this.hashTokenRequest;
807 } else {
808 tokenMechanism = null;
809 }
810 if (tokenMechanism != null && !Strings.isNullOrEmpty(token)) {
811 this.account.setFastToken(tokenMechanism,token);
812 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": storing hashed token "+tokenMechanism);
813 }
814 if (processNopStreamFeatures) {
815 processNopStreamFeatures();
816 }
817 }
818 mXmppConnectionService.databaseBackend.updateAccount(account);
819 this.quickStartInProgress = false;
820 if (version == SaslMechanism.Version.SASL) {
821 tagReader.reset();
822 sendStartStream(false, true);
823 final Tag tag = tagReader.readTag();
824 if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
825 processStream();
826 return true;
827 } else {
828 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
829 }
830 } else {
831 return false;
832 }
833 }
834
835 private void processNopStreamFeatures() throws IOException {
836 final Tag tag = tagReader.readTag();
837 if (tag != null && tag.isStart("features", Namespace.STREAMS)) {
838 this.streamFeatures = tagReader.readElement(tag);
839 Log.d(
840 Config.LOGTAG,
841 account.getJid().asBareJid()
842 + ": processed NOP stream features after success: "
843 + XmlHelper.printElementNames(this.streamFeatures));
844 } else {
845 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received " + tag);
846 Log.d(
847 Config.LOGTAG,
848 account.getJid().asBareJid()
849 + ": server did not send stream features after SASL2 success");
850 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
851 }
852 }
853
854 private void processFailure(final Element failure) throws IOException {
855 final SaslMechanism.Version version;
856 try {
857 version = SaslMechanism.Version.of(failure);
858 } catch (final IllegalArgumentException e) {
859 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
860 }
861 Log.d(Config.LOGTAG, failure.toString());
862 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": login failure " + version);
863 if (SaslMechanism.hashedToken(this.saslMechanism)) {
864 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resetting token");
865 account.resetFastToken();
866 mXmppConnectionService.databaseBackend.updateAccount(account);
867 }
868 if (failure.hasChild("temporary-auth-failure")) {
869 throw new StateChangingException(Account.State.TEMPORARY_AUTH_FAILURE);
870 } else if (failure.hasChild("account-disabled")) {
871 final String text = failure.findChildContent("text");
872 if (Strings.isNullOrEmpty(text)) {
873 throw new StateChangingException(Account.State.UNAUTHORIZED);
874 }
875 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
876 if (matcher.find()) {
877 final HttpUrl url;
878 try {
879 url = HttpUrl.get(text.substring(matcher.start(), matcher.end()));
880 } catch (final IllegalArgumentException e) {
881 throw new StateChangingException(Account.State.UNAUTHORIZED);
882 }
883 if (url.isHttps()) {
884 this.redirectionUrl = url;
885 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
886 }
887 }
888 }
889 if (SaslMechanism.hashedToken(this.saslMechanism)) {
890 Log.d(
891 Config.LOGTAG,
892 account.getJid().asBareJid()
893 + ": fast authentication failed. falling back to regular authentication");
894 authenticate();
895 } else {
896 throw new StateChangingException(Account.State.UNAUTHORIZED);
897 }
898 }
899
900 private static SSLSocket sslSocketOrNull(final Socket socket) {
901 if (socket instanceof SSLSocket) {
902 return (SSLSocket) socket;
903 } else {
904 return null;
905 }
906 }
907
908 private void processEnabled(final Element enabled) {
909 final String streamId;
910 if (enabled.getAttributeAsBoolean("resume")) {
911 streamId = enabled.getAttribute("id");
912 Log.d(
913 Config.LOGTAG,
914 account.getJid().asBareJid().toString()
915 + ": stream management enabled (resumable)");
916 } else {
917 Log.d(
918 Config.LOGTAG,
919 account.getJid().asBareJid().toString() + ": stream management enabled");
920 streamId = null;
921 }
922 this.streamId = streamId;
923 this.stanzasReceived = 0;
924 this.inSmacksSession = true;
925 final RequestPacket r = new RequestPacket();
926 tagWriter.writeStanzaAsync(r);
927 }
928
929 private void processResumed(final Element resumed) throws StateChangingException {
930 this.inSmacksSession = true;
931 this.isBound = true;
932 this.tagWriter.writeStanzaAsync(new RequestPacket());
933 lastPacketReceived = SystemClock.elapsedRealtime();
934 final String h = resumed.getAttribute("h");
935 if (h == null) {
936 resetStreamId();
937 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
938 }
939 final int serverCount;
940 try {
941 serverCount = Integer.parseInt(h);
942 } catch (final NumberFormatException e) {
943 resetStreamId();
944 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
945 }
946 final ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
947 final boolean acknowledgedMessages;
948 synchronized (this.mStanzaQueue) {
949 if (serverCount < stanzasSent) {
950 Log.d(
951 Config.LOGTAG,
952 account.getJid().asBareJid() + ": session resumed with lost packages");
953 stanzasSent = serverCount;
954 } else {
955 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": session resumed");
956 }
957 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
958 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
959 failedStanzas.add(mStanzaQueue.valueAt(i));
960 }
961 mStanzaQueue.clear();
962 }
963 if (acknowledgedMessages) {
964 mXmppConnectionService.updateConversationUi();
965 }
966 Log.d(
967 Config.LOGTAG,
968 account.getJid().asBareJid() + ": resending " + failedStanzas.size() + " stanzas");
969 for (final AbstractAcknowledgeableStanza packet : failedStanzas) {
970 if (packet instanceof MessagePacket) {
971 MessagePacket message = (MessagePacket) packet;
972 mXmppConnectionService.markMessage(
973 account,
974 message.getTo().asBareJid(),
975 message.getId(),
976 Message.STATUS_UNSEND);
977 }
978 sendPacket(packet);
979 }
980 changeStatusToOnline();
981 }
982
983 private void changeStatusToOnline() {
984 Log.d(
985 Config.LOGTAG,
986 account.getJid().asBareJid() + ": online with resource " + account.getResource());
987 changeStatus(Account.State.ONLINE);
988 }
989
990 private void processFailed(final Element failed, final boolean sendBindRequest) {
991 final int serverCount;
992 try {
993 serverCount = Integer.parseInt(failed.getAttribute("h"));
994 } catch (final NumberFormatException | NullPointerException e) {
995 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
996 resetStreamId();
997 if (sendBindRequest) {
998 sendBindRequest();
999 }
1000 return;
1001 }
1002 Log.d(
1003 Config.LOGTAG,
1004 account.getJid().asBareJid()
1005 + ": resumption failed but server acknowledged stanza #"
1006 + serverCount);
1007 final boolean acknowledgedMessages;
1008 synchronized (this.mStanzaQueue) {
1009 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
1010 }
1011 if (acknowledgedMessages) {
1012 mXmppConnectionService.updateConversationUi();
1013 }
1014 resetStreamId();
1015 if (sendBindRequest) {
1016 sendBindRequest();
1017 }
1018 }
1019
1020 private boolean acknowledgeStanzaUpTo(int serverCount) {
1021 if (serverCount > stanzasSent) {
1022 Log.e(
1023 Config.LOGTAG,
1024 "server acknowledged more stanzas than we sent. serverCount="
1025 + serverCount
1026 + ", ourCount="
1027 + stanzasSent);
1028 }
1029 boolean acknowledgedMessages = false;
1030 for (int i = 0; i < mStanzaQueue.size(); ++i) {
1031 if (serverCount >= mStanzaQueue.keyAt(i)) {
1032 if (Config.EXTENDED_SM_LOGGING) {
1033 Log.d(
1034 Config.LOGTAG,
1035 account.getJid().asBareJid()
1036 + ": server acknowledged stanza #"
1037 + mStanzaQueue.keyAt(i));
1038 }
1039 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
1040 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
1041 final MessagePacket packet = (MessagePacket) stanza;
1042 final String id = packet.getId();
1043 final Jid to = packet.getTo();
1044 if (id != null && to != null) {
1045 acknowledgedMessages |=
1046 acknowledgedListener.onMessageAcknowledged(account, to, id);
1047 }
1048 }
1049 mStanzaQueue.removeAt(i);
1050 i--;
1051 }
1052 }
1053 return acknowledgedMessages;
1054 }
1055
1056 private @NonNull Element processPacket(final Tag currentTag, final int packetType)
1057 throws IOException {
1058 final Element element;
1059 switch (packetType) {
1060 case PACKET_IQ:
1061 element = new IqPacket();
1062 break;
1063 case PACKET_MESSAGE:
1064 element = new MessagePacket();
1065 break;
1066 case PACKET_PRESENCE:
1067 element = new PresencePacket();
1068 break;
1069 default:
1070 throw new AssertionError("Should never encounter invalid type");
1071 }
1072 element.setAttributes(currentTag.getAttributes());
1073 Tag nextTag = tagReader.readTag();
1074 if (nextTag == null) {
1075 throw new IOException("interrupted mid tag");
1076 }
1077 while (!nextTag.isEnd(element.getName())) {
1078 if (!nextTag.isNo()) {
1079 element.addChild(tagReader.readElement(nextTag));
1080 }
1081 nextTag = tagReader.readTag();
1082 if (nextTag == null) {
1083 throw new IOException("interrupted mid tag");
1084 }
1085 }
1086 if (stanzasReceived == Integer.MAX_VALUE) {
1087 resetStreamId();
1088 throw new IOException("time to restart the session. cant handle >2 billion pcks");
1089 }
1090 if (inSmacksSession) {
1091 ++stanzasReceived;
1092 } else if (features.sm()) {
1093 Log.d(
1094 Config.LOGTAG,
1095 account.getJid().asBareJid()
1096 + ": not counting stanza("
1097 + element.getClass().getSimpleName()
1098 + "). Not in smacks session.");
1099 }
1100 lastPacketReceived = SystemClock.elapsedRealtime();
1101 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
1102 Log.d(Config.LOGTAG, "[background stanza] " + element);
1103 }
1104 if (element instanceof IqPacket
1105 && (((IqPacket) element).getType() == IqPacket.TYPE.SET)
1106 && element.hasChild("jingle", Namespace.JINGLE)) {
1107 return JinglePacket.upgrade((IqPacket) element);
1108 } else {
1109 return element;
1110 }
1111 }
1112
1113 private void processIq(final Tag currentTag) throws IOException {
1114 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
1115 if (!packet.valid()) {
1116 Log.e(
1117 Config.LOGTAG,
1118 "encountered invalid iq from='"
1119 + packet.getFrom()
1120 + "' to='"
1121 + packet.getTo()
1122 + "'");
1123 return;
1124 }
1125 if (packet instanceof JinglePacket) {
1126 if (this.jingleListener != null) {
1127 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
1128 }
1129 } else {
1130 OnIqPacketReceived callback = null;
1131 synchronized (this.packetCallbacks) {
1132 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple =
1133 packetCallbacks.get(packet.getId());
1134 if (packetCallbackDuple != null) {
1135 // Packets to the server should have responses from the server
1136 if (packetCallbackDuple.first.toServer(account)) {
1137 if (packet.fromServer(account)) {
1138 callback = packetCallbackDuple.second;
1139 packetCallbacks.remove(packet.getId());
1140 } else {
1141 Log.e(
1142 Config.LOGTAG,
1143 account.getJid().asBareJid().toString()
1144 + ": ignoring spoofed iq packet");
1145 }
1146 } else {
1147 if (packet.getFrom() != null
1148 && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
1149 callback = packetCallbackDuple.second;
1150 packetCallbacks.remove(packet.getId());
1151 } else {
1152 Log.e(
1153 Config.LOGTAG,
1154 account.getJid().asBareJid().toString()
1155 + ": ignoring spoofed iq packet");
1156 }
1157 }
1158 } else if (packet.getType() == IqPacket.TYPE.GET
1159 || packet.getType() == IqPacket.TYPE.SET) {
1160 callback = this.unregisteredIqListener;
1161 }
1162 }
1163 if (callback != null) {
1164 try {
1165 callback.onIqPacketReceived(account, packet);
1166 } catch (StateChangingError error) {
1167 throw new StateChangingException(error.state);
1168 }
1169 }
1170 }
1171 }
1172
1173 private void processMessage(final Tag currentTag) throws IOException {
1174 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
1175 if (!packet.valid()) {
1176 Log.e(
1177 Config.LOGTAG,
1178 "encountered invalid message from='"
1179 + packet.getFrom()
1180 + "' to='"
1181 + packet.getTo()
1182 + "'");
1183 return;
1184 }
1185 this.messageListener.onMessagePacketReceived(account, packet);
1186 }
1187
1188 private void processPresence(final Tag currentTag) throws IOException {
1189 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
1190 if (!packet.valid()) {
1191 Log.e(
1192 Config.LOGTAG,
1193 "encountered invalid presence from='"
1194 + packet.getFrom()
1195 + "' to='"
1196 + packet.getTo()
1197 + "'");
1198 return;
1199 }
1200 this.presenceListener.onPresencePacketReceived(account, packet);
1201 }
1202
1203 private void sendStartTLS() throws IOException {
1204 final Tag startTLS = Tag.empty("starttls");
1205 startTLS.setAttribute("xmlns", Namespace.TLS);
1206 tagWriter.writeTag(startTLS);
1207 }
1208
1209 private void switchOverToTls() throws XmlPullParserException, IOException {
1210 tagReader.readTag();
1211 final Socket socket = this.socket;
1212 final SSLSocket sslSocket = upgradeSocketToTls(socket);
1213 tagReader.setInputStream(sslSocket.getInputStream());
1214 tagWriter.setOutputStream(sslSocket.getOutputStream());
1215 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
1216 final boolean quickStart;
1217 try {
1218 quickStart = establishStream(SSLSockets.version(sslSocket));
1219 } catch (final InterruptedException e) {
1220 return;
1221 }
1222 if (quickStart) {
1223 this.quickStartInProgress = true;
1224 }
1225 features.encryptionEnabled = true;
1226 final Tag tag = tagReader.readTag();
1227 if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
1228 SSLSockets.log(account, sslSocket);
1229 processStream();
1230 } else {
1231 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
1232 }
1233 sslSocket.close();
1234 }
1235
1236 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
1237 final SSLSocketFactory sslSocketFactory;
1238 try {
1239 sslSocketFactory = getSSLSocketFactory();
1240 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
1241 throw new StateChangingException(Account.State.TLS_ERROR);
1242 }
1243 final InetAddress address = socket.getInetAddress();
1244 final SSLSocket sslSocket =
1245 (SSLSocket)
1246 sslSocketFactory.createSocket(
1247 socket, address.getHostAddress(), socket.getPort(), true);
1248 SSLSockets.setSecurity(sslSocket);
1249 SSLSockets.setHostname(sslSocket, IDN.toASCII(account.getServer()));
1250 SSLSockets.setApplicationProtocol(sslSocket, "xmpp-client");
1251 final XmppDomainVerifier xmppDomainVerifier = new XmppDomainVerifier();
1252 try {
1253 if (!xmppDomainVerifier.verify(
1254 account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
1255 Log.d(
1256 Config.LOGTAG,
1257 account.getJid().asBareJid()
1258 + ": TLS certificate domain verification failed");
1259 FileBackend.close(sslSocket);
1260 throw new StateChangingException(Account.State.TLS_ERROR_DOMAIN);
1261 }
1262 } catch (final SSLPeerUnverifiedException e) {
1263 FileBackend.close(sslSocket);
1264 throw new StateChangingException(Account.State.TLS_ERROR);
1265 }
1266 return sslSocket;
1267 }
1268
1269 private void processStreamFeatures(final Tag currentTag) throws IOException {
1270 this.streamFeatures = tagReader.readElement(currentTag);
1271 final boolean isSecure = isSecure();
1272 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
1273 if (this.quickStartInProgress) {
1274 if (this.streamFeatures.hasChild("authentication", Namespace.SASL_2)) {
1275 Log.d(
1276 Config.LOGTAG,
1277 account.getJid().asBareJid()
1278 + ": quick start in progress. ignoring features: "
1279 + XmlHelper.printElementNames(this.streamFeatures));
1280 if (SaslMechanism.hashedToken(this.saslMechanism)) {
1281 return;
1282 }
1283 if (isFastTokenAvailable(
1284 this.streamFeatures.findChild("authentication", Namespace.SASL_2))) {
1285 Log.d(
1286 Config.LOGTAG,
1287 account.getJid().asBareJid()
1288 + ": fast token available; resetting quick start");
1289 account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false);
1290 mXmppConnectionService.databaseBackend.updateAccount(account);
1291 }
1292 return;
1293 }
1294 Log.d(
1295 Config.LOGTAG,
1296 account.getJid().asBareJid()
1297 + ": server lost support for SASL 2. quick start not possible");
1298 this.account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false);
1299 mXmppConnectionService.databaseBackend.updateAccount(account);
1300 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1301 }
1302 if (this.streamFeatures.hasChild("starttls", Namespace.TLS)
1303 && !features.encryptionEnabled) {
1304 sendStartTLS();
1305 } else if (this.streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1306 && account.isOptionSet(Account.OPTION_REGISTER)) {
1307 if (isSecure) {
1308 register();
1309 } else {
1310 Log.d(
1311 Config.LOGTAG,
1312 account.getJid().asBareJid()
1313 + ": unable to find STARTTLS for registration process "
1314 + XmlHelper.printElementNames(this.streamFeatures));
1315 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1316 }
1317 } else if (!this.streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1318 && account.isOptionSet(Account.OPTION_REGISTER)) {
1319 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
1320 } else if (this.streamFeatures.hasChild("authentication", Namespace.SASL_2)
1321 && shouldAuthenticate
1322 && isSecure) {
1323 authenticate(SaslMechanism.Version.SASL_2);
1324 } else if (this.streamFeatures.hasChild("mechanisms", Namespace.SASL)
1325 && shouldAuthenticate
1326 && isSecure) {
1327 authenticate(SaslMechanism.Version.SASL);
1328 } else if (this.streamFeatures.hasChild("sm", Namespace.STREAM_MANAGEMENT)
1329 && streamId != null
1330 && !inSmacksSession) {
1331 if (Config.EXTENDED_SM_LOGGING) {
1332 Log.d(
1333 Config.LOGTAG,
1334 account.getJid().asBareJid()
1335 + ": resuming after stanza #"
1336 + stanzasReceived);
1337 }
1338 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived);
1339 this.mSmCatchupMessageCounter.set(0);
1340 this.mWaitingForSmCatchup.set(true);
1341 this.tagWriter.writeStanzaAsync(resume);
1342 } else if (needsBinding) {
1343 if (this.streamFeatures.hasChild("bind", Namespace.BIND) && isSecure) {
1344 sendBindRequest();
1345 } else {
1346 Log.d(
1347 Config.LOGTAG,
1348 account.getJid().asBareJid()
1349 + ": unable to find bind feature "
1350 + XmlHelper.printElementNames(this.streamFeatures));
1351 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1352 }
1353 } else {
1354 Log.d(
1355 Config.LOGTAG,
1356 account.getJid().asBareJid()
1357 + ": received NOP stream features "
1358 + XmlHelper.printElementNames(this.streamFeatures));
1359 }
1360 }
1361
1362 private void authenticate() throws IOException {
1363 final boolean isSecure = isSecure();
1364 if (isSecure && this.streamFeatures.hasChild("authentication", Namespace.SASL_2)) {authenticate(SaslMechanism.Version.SASL_2);
1365 } else if (isSecure && this.streamFeatures.hasChild("mechanisms", Namespace.SASL)) {
1366 authenticate(SaslMechanism.Version.SASL);
1367 } else {
1368 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1369 }
1370 }
1371
1372 private boolean isSecure() {
1373 return features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
1374 }
1375
1376 private void authenticate(final SaslMechanism.Version version) throws IOException {
1377 final Element authElement;
1378 if (version == SaslMechanism.Version.SASL) {
1379 authElement = this.streamFeatures.findChild("mechanisms", Namespace.SASL);
1380 } else {
1381 authElement = this.streamFeatures.findChild("authentication", Namespace.SASL_2);
1382 }
1383 final Collection<String> mechanisms = SaslMechanism.mechanisms(authElement);
1384 final Element cbElement =
1385 this.streamFeatures.findChild("sasl-channel-binding", Namespace.CHANNEL_BINDING);
1386 final Collection<ChannelBinding> channelBindings = ChannelBinding.of(cbElement);
1387 final SaslMechanism.Factory factory = new SaslMechanism.Factory(account);
1388 final SaslMechanism saslMechanism = factory.of(mechanisms, channelBindings, version, SSLSockets.version(this.socket));
1389 this.saslMechanism = validate(saslMechanism, mechanisms);
1390 final boolean quickStartAvailable;
1391 final String firstMessage = this.saslMechanism.getClientFirstMessage(sslSocketOrNull(this.socket));
1392 final boolean usingFast = SaslMechanism.hashedToken(this.saslMechanism);
1393 final Element authenticate;
1394 if (version == SaslMechanism.Version.SASL) {
1395 authenticate = new Element("auth", Namespace.SASL);
1396 if (!Strings.isNullOrEmpty(firstMessage)) {
1397 authenticate.setContent(firstMessage);
1398 }
1399 quickStartAvailable = false;
1400 } else if (version == SaslMechanism.Version.SASL_2) {
1401 final Element inline = authElement.findChild("inline", Namespace.SASL_2);
1402 final boolean sm = inline != null && inline.hasChild("sm", "urn:xmpp:sm:3");
1403 final HashedToken.Mechanism hashTokenRequest;
1404 if (usingFast) {
1405 hashTokenRequest = null;
1406 } else {
1407 final Element fast = inline == null ? null : inline.findChild("fast", Namespace.FAST);
1408 final Collection<String> fastMechanisms = SaslMechanism.mechanisms(fast);
1409 hashTokenRequest =
1410 HashedToken.Mechanism.best(fastMechanisms, SSLSockets.version(this.socket));
1411 }
1412 final Collection<String> bindFeatures = Bind2.features(inline);
1413 quickStartAvailable =
1414 sm
1415 && bindFeatures != null
1416 && bindFeatures.containsAll(Bind2.QUICKSTART_FEATURES);
1417 if (bindFeatures != null) {
1418 try {
1419 mXmppConnectionService.restoredFromDatabaseLatch.await();
1420 } catch (final InterruptedException e) {
1421 Log.d(
1422 Config.LOGTAG,
1423 account.getJid().asBareJid()
1424 + ": interrupted while waiting for DB restore during SASL2 bind");
1425 return;
1426 }
1427 }
1428 this.hashTokenRequest = hashTokenRequest;
1429 authenticate = generateAuthenticationRequest(firstMessage, usingFast, hashTokenRequest, bindFeatures, sm);
1430 } else {
1431 throw new AssertionError("Missing implementation for " + version);
1432 }
1433
1434 if (account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, quickStartAvailable)) {
1435 mXmppConnectionService.databaseBackend.updateAccount(account);
1436 }
1437
1438 Log.d(
1439 Config.LOGTAG,
1440 account.getJid().toString()
1441 + ": Authenticating with "
1442 + version
1443 + "/"
1444 + this.saslMechanism.getMechanism());
1445 authenticate.setAttribute("mechanism", this.saslMechanism.getMechanism());
1446 tagWriter.writeElement(authenticate);
1447 }
1448
1449 private static boolean isFastTokenAvailable(final Element authentication) {
1450 final Element inline = authentication == null ? null : authentication.findChild("inline");
1451 return inline != null && inline.hasChild("fast", Namespace.FAST);
1452 }
1453
1454 @NonNull
1455 private SaslMechanism validate(final @Nullable SaslMechanism saslMechanism, Collection<String> mechanisms) throws StateChangingException {
1456 if (saslMechanism == null) {
1457 Log.d(
1458 Config.LOGTAG,
1459 account.getJid().asBareJid()
1460 + ": unable to find supported SASL mechanism in "
1461 + mechanisms);
1462 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1463 }
1464 if (SaslMechanism.hashedToken(saslMechanism)) {
1465 return saslMechanism;
1466 }
1467 final int pinnedMechanism = account.getPinnedMechanismPriority();
1468 if (pinnedMechanism > saslMechanism.getPriority()) {
1469 Log.e(
1470 Config.LOGTAG,
1471 "Auth failed. Authentication mechanism "
1472 + saslMechanism.getMechanism()
1473 + " has lower priority ("
1474 + saslMechanism.getPriority()
1475 + ") than pinned priority ("
1476 + pinnedMechanism
1477 + "). Possible downgrade attack?");
1478 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
1479 }
1480 return saslMechanism;
1481 }
1482
1483 private Element generateAuthenticationRequest(final String firstMessage, final boolean usingFast) {
1484 return generateAuthenticationRequest(firstMessage, usingFast, null, Bind2.QUICKSTART_FEATURES, true);
1485 }
1486
1487 private Element generateAuthenticationRequest(
1488 final String firstMessage,
1489 final boolean usingFast,
1490 final HashedToken.Mechanism hashedTokenRequest,
1491 final Collection<String> bind,
1492 final boolean inlineStreamManagement) {
1493 final Element authenticate = new Element("authenticate", Namespace.SASL_2);
1494 if (!Strings.isNullOrEmpty(firstMessage)) {
1495 authenticate.addChild("initial-response").setContent(firstMessage);
1496 }
1497 final Element userAgent = authenticate.addChild("user-agent");
1498 userAgent.setAttribute("id", account.getUuid());
1499 userAgent
1500 .addChild("software")
1501 .setContent(mXmppConnectionService.getString(R.string.app_name));
1502 if (!PhoneHelper.isEmulator()) {
1503 userAgent
1504 .addChild("device")
1505 .setContent(String.format("%s %s", Build.MANUFACTURER, Build.MODEL));
1506 }
1507 if (bind != null) {
1508 authenticate.addChild(generateBindRequest(bind));
1509 }
1510 if (inlineStreamManagement && streamId != null) {
1511 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived);
1512 this.mSmCatchupMessageCounter.set(0);
1513 this.mWaitingForSmCatchup.set(true);
1514 authenticate.addChild(resume);
1515 }
1516 if (hashedTokenRequest != null) {
1517 authenticate
1518 .addChild("request-token", Namespace.FAST)
1519 .setAttribute("mechanism", hashedTokenRequest.name());
1520 }
1521 if (usingFast) {
1522 authenticate.addChild("fast", Namespace.FAST);
1523 }
1524 return authenticate;
1525 }
1526
1527 private Element generateBindRequest(final Collection<String> bindFeatures) {
1528 Log.d(Config.LOGTAG, "inline bind features: " + bindFeatures);
1529 final Element bind = new Element("bind", Namespace.BIND2);
1530 bind.addChild("tag").setContent(mXmppConnectionService.getString(R.string.app_name));
1531 if (bindFeatures.contains(Namespace.CARBONS)) {
1532 bind.addChild("enable", Namespace.CARBONS);
1533 }
1534 if (bindFeatures.contains(Namespace.STREAM_MANAGEMENT)) {
1535 bind.addChild(new EnablePacket());
1536 }
1537 return bind;
1538 }
1539
1540 private void register() {
1541 final String preAuth = account.getKey(Account.KEY_PRE_AUTH_REGISTRATION_TOKEN);
1542 if (preAuth != null && features.invite()) {
1543 final IqPacket preAuthRequest = new IqPacket(IqPacket.TYPE.SET);
1544 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
1545 sendUnmodifiedIqPacket(
1546 preAuthRequest,
1547 (account, response) -> {
1548 if (response.getType() == IqPacket.TYPE.RESULT) {
1549 sendRegistryRequest();
1550 } else {
1551 final String error = response.getErrorCondition();
1552 Log.d(
1553 Config.LOGTAG,
1554 account.getJid().asBareJid()
1555 + ": failed to pre auth. "
1556 + error);
1557 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
1558 }
1559 },
1560 true);
1561 } else {
1562 sendRegistryRequest();
1563 }
1564 }
1565
1566 private void sendRegistryRequest() {
1567 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
1568 register.query(Namespace.REGISTER);
1569 register.setTo(account.getDomain());
1570 sendUnmodifiedIqPacket(
1571 register,
1572 (account, packet) -> {
1573 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1574 return;
1575 }
1576 if (packet.getType() == IqPacket.TYPE.ERROR) {
1577 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1578 }
1579 final Element query = packet.query(Namespace.REGISTER);
1580 if (query.hasChild("username") && (query.hasChild("password"))) {
1581 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
1582 final Element username =
1583 new Element("username").setContent(account.getUsername());
1584 final Element password =
1585 new Element("password").setContent(account.getPassword());
1586 register1.query(Namespace.REGISTER).addChild(username);
1587 register1.query().addChild(password);
1588 register1.setFrom(account.getJid().asBareJid());
1589 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
1590 } else if (query.hasChild("x", Namespace.DATA)) {
1591 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
1592 final Element blob = query.findChild("data", "urn:xmpp:bob");
1593 final String id = packet.getId();
1594 InputStream is;
1595 if (blob != null) {
1596 try {
1597 final String base64Blob = blob.getContent();
1598 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
1599 is = new ByteArrayInputStream(strBlob);
1600 } catch (Exception e) {
1601 is = null;
1602 }
1603 } else {
1604 final boolean useTor =
1605 mXmppConnectionService.useTorToConnect() || account.isOnion();
1606 try {
1607 final String url = data.getValue("url");
1608 final String fallbackUrl = data.getValue("captcha-fallback-url");
1609 if (url != null) {
1610 is = HttpConnectionManager.open(url, useTor);
1611 } else if (fallbackUrl != null) {
1612 is = HttpConnectionManager.open(fallbackUrl, useTor);
1613 } else {
1614 is = null;
1615 }
1616 } catch (final IOException e) {
1617 Log.d(
1618 Config.LOGTAG,
1619 account.getJid().asBareJid() + ": unable to fetch captcha",
1620 e);
1621 is = null;
1622 }
1623 }
1624
1625 if (is != null) {
1626 Bitmap captcha = BitmapFactory.decodeStream(is);
1627 try {
1628 if (mXmppConnectionService.displayCaptchaRequest(
1629 account, id, data, captcha)) {
1630 return;
1631 }
1632 } catch (Exception e) {
1633 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1634 }
1635 }
1636 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1637 } else if (query.hasChild("instructions")
1638 || query.hasChild("x", Namespace.OOB)) {
1639 final String instructions = query.findChildContent("instructions");
1640 final Element oob = query.findChild("x", Namespace.OOB);
1641 final String url = oob == null ? null : oob.findChildContent("url");
1642 if (url != null) {
1643 setAccountCreationFailed(url);
1644 } else if (instructions != null) {
1645 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
1646 if (matcher.find()) {
1647 setAccountCreationFailed(
1648 instructions.substring(matcher.start(), matcher.end()));
1649 }
1650 }
1651 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1652 }
1653 },
1654 true);
1655 }
1656
1657 private void setAccountCreationFailed(final String url) {
1658 final HttpUrl httpUrl = url == null ? null : HttpUrl.parse(url);
1659 if (httpUrl != null && httpUrl.isHttps()) {
1660 this.redirectionUrl = httpUrl;
1661 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1662 }
1663 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1664 }
1665
1666 public HttpUrl getRedirectionUrl() {
1667 return this.redirectionUrl;
1668 }
1669
1670 public void resetEverything() {
1671 resetAttemptCount(true);
1672 resetStreamId();
1673 clearIqCallbacks();
1674 this.stanzasSent = 0;
1675 mStanzaQueue.clear();
1676 this.redirectionUrl = null;
1677 synchronized (this.disco) {
1678 disco.clear();
1679 }
1680 synchronized (this.commands) {
1681 this.commands.clear();
1682 }
1683 this.saslMechanism = null;
1684 }
1685
1686 private void sendBindRequest() {
1687 try {
1688 mXmppConnectionService.restoredFromDatabaseLatch.await();
1689 } catch (InterruptedException e) {
1690 Log.d(
1691 Config.LOGTAG,
1692 account.getJid().asBareJid()
1693 + ": interrupted while waiting for DB restore during bind");
1694 return;
1695 }
1696 clearIqCallbacks();
1697 if (account.getJid().isBareJid()) {
1698 account.setResource(this.createNewResource());
1699 } else {
1700 fixResource(mXmppConnectionService, account);
1701 }
1702 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1703 final String resource =
1704 Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1705 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1706 this.sendUnmodifiedIqPacket(
1707 iq,
1708 (account, packet) -> {
1709 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1710 return;
1711 }
1712 final Element bind = packet.findChild("bind");
1713 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1714 isBound = true;
1715 final Element jid = bind.findChild("jid");
1716 if (jid != null && jid.getContent() != null) {
1717 try {
1718 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1719 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1720 Log.d(
1721 Config.LOGTAG,
1722 account.getJid().asBareJid()
1723 + ": server tried to re-assign domain to "
1724 + assignedJid.getDomain());
1725 throw new StateChangingError(Account.State.BIND_FAILURE);
1726 }
1727 if (account.setJid(assignedJid)) {
1728 Log.d(
1729 Config.LOGTAG,
1730 account.getJid().asBareJid()
1731 + ": jid changed during bind. updating database");
1732 mXmppConnectionService.databaseBackend.updateAccount(account);
1733 }
1734 if (streamFeatures.hasChild("session")
1735 && !streamFeatures
1736 .findChild("session")
1737 .hasChild("optional")) {
1738 sendStartSession();
1739 } else {
1740 final boolean waitForDisco = enableStreamManagement();
1741 sendPostBindInitialization(waitForDisco, false);
1742 }
1743 return;
1744 } catch (final IllegalArgumentException e) {
1745 Log.d(
1746 Config.LOGTAG,
1747 account.getJid().asBareJid()
1748 + ": server reported invalid jid ("
1749 + jid.getContent()
1750 + ") on bind");
1751 }
1752 } else {
1753 Log.d(
1754 Config.LOGTAG,
1755 account.getJid()
1756 + ": disconnecting because of bind failure. (no jid)");
1757 }
1758 } else {
1759 Log.d(
1760 Config.LOGTAG,
1761 account.getJid()
1762 + ": disconnecting because of bind failure ("
1763 + packet);
1764 }
1765 final Element error = packet.findChild("error");
1766 if (packet.getType() == IqPacket.TYPE.ERROR
1767 && error != null
1768 && error.hasChild("conflict")) {
1769 account.setResource(createNewResource());
1770 }
1771 throw new StateChangingError(Account.State.BIND_FAILURE);
1772 },
1773 true);
1774 }
1775
1776 private void clearIqCallbacks() {
1777 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1778 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1779 synchronized (this.packetCallbacks) {
1780 if (this.packetCallbacks.size() == 0) {
1781 return;
1782 }
1783 Log.d(
1784 Config.LOGTAG,
1785 account.getJid().asBareJid()
1786 + ": clearing "
1787 + this.packetCallbacks.size()
1788 + " iq callbacks");
1789 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator =
1790 this.packetCallbacks.values().iterator();
1791 while (iterator.hasNext()) {
1792 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1793 callbacks.add(entry.second);
1794 iterator.remove();
1795 }
1796 }
1797 for (OnIqPacketReceived callback : callbacks) {
1798 try {
1799 callback.onIqPacketReceived(account, failurePacket);
1800 } catch (StateChangingError error) {
1801 Log.d(
1802 Config.LOGTAG,
1803 account.getJid().asBareJid()
1804 + ": caught StateChangingError("
1805 + error.state.toString()
1806 + ") while clearing callbacks");
1807 // ignore
1808 }
1809 }
1810 Log.d(
1811 Config.LOGTAG,
1812 account.getJid().asBareJid()
1813 + ": done clearing iq callbacks. "
1814 + this.packetCallbacks.size()
1815 + " left");
1816 }
1817
1818 public void sendDiscoTimeout() {
1819 if (mWaitForDisco.compareAndSet(true, false)) {
1820 Log.d(
1821 Config.LOGTAG,
1822 account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1823 finalizeBind();
1824 }
1825 }
1826
1827 private void sendStartSession() {
1828 Log.d(
1829 Config.LOGTAG,
1830 account.getJid().asBareJid() + ": sending legacy session to outdated server");
1831 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1832 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1833 this.sendUnmodifiedIqPacket(
1834 startSession,
1835 (account, packet) -> {
1836 if (packet.getType() == IqPacket.TYPE.RESULT) {
1837 final boolean waitForDisco = enableStreamManagement();
1838 sendPostBindInitialization(waitForDisco, false);
1839 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1840 throw new StateChangingError(Account.State.SESSION_FAILURE);
1841 }
1842 },
1843 true);
1844 }
1845
1846 private boolean enableStreamManagement() {
1847 final boolean streamManagement =
1848 this.streamFeatures.hasChild("sm", Namespace.STREAM_MANAGEMENT);
1849 if (streamManagement) {
1850 synchronized (this.mStanzaQueue) {
1851 final EnablePacket enable = new EnablePacket();
1852 tagWriter.writeStanzaAsync(enable);
1853 stanzasSent = 0;
1854 mStanzaQueue.clear();
1855 }
1856 return true;
1857 } else {
1858 return false;
1859 }
1860 }
1861
1862 private void sendPostBindInitialization(
1863 final boolean waitForDisco, final boolean carbonsEnabled) {
1864 features.carbonsEnabled = carbonsEnabled;
1865 features.blockListRequested = false;
1866 synchronized (this.disco) {
1867 this.disco.clear();
1868 }
1869 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1870 mPendingServiceDiscoveries.set(0);
1871 if (!waitForDisco
1872 || Patches.DISCO_EXCEPTIONS.contains(
1873 account.getJid().getDomain().toEscapedString())) {
1874 Log.d(
1875 Config.LOGTAG,
1876 account.getJid().asBareJid() + ": do not wait for service discovery");
1877 mWaitForDisco.set(false);
1878 } else {
1879 mWaitForDisco.set(true);
1880 }
1881 lastDiscoStarted = SystemClock.elapsedRealtime();
1882 mXmppConnectionService.scheduleWakeUpCall(
1883 Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1884 final Element caps = streamFeatures.findChild("c");
1885 final String hash = caps == null ? null : caps.getAttribute("hash");
1886 final String ver = caps == null ? null : caps.getAttribute("ver");
1887 ServiceDiscoveryResult discoveryResult = null;
1888 if (hash != null && ver != null) {
1889 discoveryResult =
1890 mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1891 }
1892 final boolean requestDiscoItemsFirst =
1893 !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1894 if (requestDiscoItemsFirst) {
1895 sendServiceDiscoveryItems(account.getDomain());
1896 }
1897 if (discoveryResult == null) {
1898 sendServiceDiscoveryInfo(account.getDomain());
1899 } else {
1900 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1901 disco.put(account.getDomain(), discoveryResult);
1902 }
1903 discoverMamPreferences();
1904 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1905 if (!requestDiscoItemsFirst) {
1906 sendServiceDiscoveryItems(account.getDomain());
1907 }
1908
1909 if (!mWaitForDisco.get()) {
1910 finalizeBind();
1911 }
1912 this.lastSessionStarted = SystemClock.elapsedRealtime();
1913 }
1914
1915 private void sendServiceDiscoveryInfo(final Jid jid) {
1916 mPendingServiceDiscoveries.incrementAndGet();
1917 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1918 iq.setTo(jid);
1919 iq.query("http://jabber.org/protocol/disco#info");
1920 this.sendIqPacket(
1921 iq,
1922 (account, packet) -> {
1923 if (packet.getType() == IqPacket.TYPE.RESULT) {
1924 boolean advancedStreamFeaturesLoaded;
1925 synchronized (XmppConnection.this.disco) {
1926 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1927 if (jid.equals(account.getDomain())) {
1928 mXmppConnectionService.databaseBackend.insertDiscoveryResult(
1929 result);
1930 }
1931 disco.put(jid, result);
1932 advancedStreamFeaturesLoaded =
1933 disco.containsKey(account.getDomain())
1934 && disco.containsKey(account.getJid().asBareJid());
1935 }
1936 if (advancedStreamFeaturesLoaded
1937 && (jid.equals(account.getDomain())
1938 || jid.equals(account.getJid().asBareJid()))) {
1939 enableAdvancedStreamFeatures();
1940 }
1941 } else if (packet.getType() == IqPacket.TYPE.ERROR) {
1942 Log.d(
1943 Config.LOGTAG,
1944 account.getJid().asBareJid()
1945 + ": could not query disco info for "
1946 + jid.toString());
1947 final boolean serverOrAccount =
1948 jid.equals(account.getDomain())
1949 || jid.equals(account.getJid().asBareJid());
1950 final boolean advancedStreamFeaturesLoaded;
1951 if (serverOrAccount) {
1952 synchronized (XmppConnection.this.disco) {
1953 disco.put(jid, ServiceDiscoveryResult.empty());
1954 advancedStreamFeaturesLoaded =
1955 disco.containsKey(account.getDomain())
1956 && disco.containsKey(account.getJid().asBareJid());
1957 }
1958 } else {
1959 advancedStreamFeaturesLoaded = false;
1960 }
1961 if (advancedStreamFeaturesLoaded) {
1962 enableAdvancedStreamFeatures();
1963 }
1964 }
1965 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1966 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1967 && mWaitForDisco.compareAndSet(true, false)) {
1968 finalizeBind();
1969 }
1970 }
1971 });
1972 }
1973
1974 private void discoverMamPreferences() {
1975 IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1976 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1977 sendIqPacket(
1978 request,
1979 (account, response) -> {
1980 if (response.getType() == IqPacket.TYPE.RESULT) {
1981 Element prefs =
1982 response.findChild(
1983 "prefs", MessageArchiveService.Version.MAM_2.namespace);
1984 isMamPreferenceAlways =
1985 "always"
1986 .equals(
1987 prefs == null
1988 ? null
1989 : prefs.getAttribute("default"));
1990 }
1991 });
1992 }
1993
1994 private void discoverCommands() {
1995 final IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1996 request.setTo(account.getDomain());
1997 request.addChild("query", Namespace.DISCO_ITEMS).setAttribute("node", Namespace.COMMANDS);
1998 sendIqPacket(
1999 request,
2000 (account, response) -> {
2001 if (response.getType() == IqPacket.TYPE.RESULT) {
2002 final Element query = response.findChild("query", Namespace.DISCO_ITEMS);
2003 if (query == null) {
2004 return;
2005 }
2006 final HashMap<String, Jid> commands = new HashMap<>();
2007 for (final Element child : query.getChildren()) {
2008 if ("item".equals(child.getName())) {
2009 final String node = child.getAttribute("node");
2010 final Jid jid = child.getAttributeAsJid("jid");
2011 if (node != null && jid != null) {
2012 commands.put(node, jid);
2013 }
2014 }
2015 }
2016 synchronized (this.commands) {
2017 this.commands.clear();
2018 this.commands.putAll(commands);
2019 }
2020 }
2021 });
2022 }
2023
2024 public boolean isMamPreferenceAlways() {
2025 return isMamPreferenceAlways;
2026 }
2027
2028 private void finalizeBind() {
2029 if (bindListener != null) {
2030 bindListener.onBind(account);
2031 }
2032 changeStatusToOnline();
2033 }
2034
2035 private void enableAdvancedStreamFeatures() {
2036 if (getFeatures().blocking() && !features.blockListRequested) {
2037 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
2038 this.sendIqPacket(
2039 getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
2040 }
2041 for (final OnAdvancedStreamFeaturesLoaded listener :
2042 advancedStreamFeaturesLoadedListeners) {
2043 listener.onAdvancedStreamFeaturesAvailable(account);
2044 }
2045 if (getFeatures().carbons() && !features.carbonsEnabled) {
2046 sendEnableCarbons();
2047 }
2048 if (getFeatures().commands()) {
2049 discoverCommands();
2050 }
2051 }
2052
2053 private void sendServiceDiscoveryItems(final Jid server) {
2054 mPendingServiceDiscoveries.incrementAndGet();
2055 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
2056 iq.setTo(server.getDomain());
2057 iq.query("http://jabber.org/protocol/disco#items");
2058 this.sendIqPacket(
2059 iq,
2060 (account, packet) -> {
2061 if (packet.getType() == IqPacket.TYPE.RESULT) {
2062 final HashSet<Jid> items = new HashSet<>();
2063 final List<Element> elements = packet.query().getChildren();
2064 for (final Element element : elements) {
2065 if (element.getName().equals("item")) {
2066 final Jid jid =
2067 InvalidJid.getNullForInvalid(
2068 element.getAttributeAsJid("jid"));
2069 if (jid != null && !jid.equals(account.getDomain())) {
2070 items.add(jid);
2071 }
2072 }
2073 }
2074 for (Jid jid : items) {
2075 sendServiceDiscoveryInfo(jid);
2076 }
2077 } else {
2078 Log.d(
2079 Config.LOGTAG,
2080 account.getJid().asBareJid()
2081 + ": could not query disco items of "
2082 + server);
2083 }
2084 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
2085 if (mPendingServiceDiscoveries.decrementAndGet() == 0
2086 && mWaitForDisco.compareAndSet(true, false)) {
2087 finalizeBind();
2088 }
2089 }
2090 });
2091 }
2092
2093 private void sendEnableCarbons() {
2094 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
2095 iq.addChild("enable", Namespace.CARBONS);
2096 this.sendIqPacket(
2097 iq,
2098 (account, packet) -> {
2099 if (packet.getType() == IqPacket.TYPE.RESULT) {
2100 Log.d(
2101 Config.LOGTAG,
2102 account.getJid().asBareJid() + ": successfully enabled carbons");
2103 features.carbonsEnabled = true;
2104 } else {
2105 Log.d(
2106 Config.LOGTAG,
2107 account.getJid().asBareJid()
2108 + ": could not enable carbons "
2109 + packet);
2110 }
2111 });
2112 }
2113
2114 private void processStreamError(final Tag currentTag) throws IOException {
2115 final Element streamError = tagReader.readElement(currentTag);
2116 if (streamError == null) {
2117 return;
2118 }
2119 if (streamError.hasChild("conflict")) {
2120 account.setResource(createNewResource());
2121 Log.d(
2122 Config.LOGTAG,
2123 account.getJid().asBareJid()
2124 + ": switching resource due to conflict ("
2125 + account.getResource()
2126 + ")");
2127 throw new IOException();
2128 } else if (streamError.hasChild("host-unknown")) {
2129 throw new StateChangingException(Account.State.HOST_UNKNOWN);
2130 } else if (streamError.hasChild("policy-violation")) {
2131 this.lastConnect = SystemClock.elapsedRealtime();
2132 final String text = streamError.findChildContent("text");
2133 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": policy violation. " + text);
2134 failPendingMessages(text);
2135 throw new StateChangingException(Account.State.POLICY_VIOLATION);
2136 } else {
2137 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError);
2138 throw new StateChangingException(Account.State.STREAM_ERROR);
2139 }
2140 }
2141
2142 private void failPendingMessages(final String error) {
2143 synchronized (this.mStanzaQueue) {
2144 for (int i = 0; i < mStanzaQueue.size(); ++i) {
2145 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
2146 if (stanza instanceof MessagePacket) {
2147 final MessagePacket packet = (MessagePacket) stanza;
2148 final String id = packet.getId();
2149 final Jid to = packet.getTo();
2150 mXmppConnectionService.markMessage(
2151 account, to.asBareJid(), id, Message.STATUS_SEND_FAILED, error);
2152 }
2153 }
2154 }
2155 }
2156
2157 private boolean establishStream(final SSLSockets.Version sslVersion)
2158 throws IOException, InterruptedException {
2159 final SaslMechanism quickStartMechanism =
2160 SaslMechanism.ensureAvailable(account.getQuickStartMechanism(), sslVersion);
2161 final boolean secureConnection = sslVersion != SSLSockets.Version.NONE;
2162 if (secureConnection
2163 && Config.QUICKSTART_ENABLED
2164 && quickStartMechanism != null
2165 && account.isOptionSet(Account.OPTION_QUICKSTART_AVAILABLE)) {
2166 mXmppConnectionService.restoredFromDatabaseLatch.await();
2167 this.saslMechanism = quickStartMechanism;
2168 final boolean usingFast = quickStartMechanism instanceof HashedToken;
2169 final Element authenticate =
2170 generateAuthenticationRequest(quickStartMechanism.getClientFirstMessage(sslSocketOrNull(this.socket)), usingFast);
2171 authenticate.setAttribute("mechanism", quickStartMechanism.getMechanism());
2172 sendStartStream(true, false);
2173 tagWriter.writeElement(authenticate);
2174 Log.d(
2175 Config.LOGTAG,
2176 account.getJid().toString()
2177 + ": quick start with "
2178 + quickStartMechanism.getMechanism());
2179 return true;
2180 } else {
2181 sendStartStream(secureConnection, true);
2182 return false;
2183 }
2184 }
2185
2186 private void sendStartStream(final boolean from, final boolean flush) throws IOException {
2187 final Tag stream = Tag.start("stream:stream");
2188 stream.setAttribute("to", account.getServer());
2189 if (from) {
2190 stream.setAttribute("from", account.getJid().asBareJid().toEscapedString());
2191 }
2192 stream.setAttribute("version", "1.0");
2193 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
2194 stream.setAttribute("xmlns", "jabber:client");
2195 stream.setAttribute("xmlns:stream", Namespace.STREAMS);
2196 tagWriter.writeTag(stream, flush);
2197 }
2198
2199 private String createNewResource() {
2200 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
2201 }
2202
2203 private String nextRandomId() {
2204 return nextRandomId(false);
2205 }
2206
2207 private String nextRandomId(final boolean s) {
2208 return CryptoHelper.random(s ? 3 : 9);
2209 }
2210
2211 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
2212 packet.setFrom(account.getJid());
2213 return this.sendUnmodifiedIqPacket(packet, callback, false);
2214 }
2215
2216 public synchronized String sendUnmodifiedIqPacket(
2217 final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
2218 if (packet.getId() == null) {
2219 packet.setAttribute("id", nextRandomId());
2220 }
2221 if (callback != null) {
2222 synchronized (this.packetCallbacks) {
2223 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
2224 }
2225 }
2226 this.sendPacket(packet, force);
2227 return packet.getId();
2228 }
2229
2230 public void sendMessagePacket(final MessagePacket packet) {
2231 this.sendPacket(packet);
2232 }
2233
2234 public void sendPresencePacket(final PresencePacket packet) {
2235 this.sendPacket(packet);
2236 }
2237
2238 private synchronized void sendPacket(final AbstractStanza packet) {
2239 sendPacket(packet, false);
2240 }
2241
2242 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
2243 if (stanzasSent == Integer.MAX_VALUE) {
2244 resetStreamId();
2245 disconnect(true);
2246 return;
2247 }
2248 synchronized (this.mStanzaQueue) {
2249 if (force || isBound) {
2250 tagWriter.writeStanzaAsync(packet);
2251 } else {
2252 Log.d(
2253 Config.LOGTAG,
2254 account.getJid().asBareJid()
2255 + " do not write stanza to unbound stream "
2256 + packet.toString());
2257 }
2258 if (packet instanceof AbstractAcknowledgeableStanza) {
2259 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
2260
2261 if (this.mStanzaQueue.size() != 0) {
2262 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
2263 if (currentHighestKey != stanzasSent) {
2264 throw new AssertionError("Stanza count messed up");
2265 }
2266 }
2267
2268 ++stanzasSent;
2269 this.mStanzaQueue.append(stanzasSent, stanza);
2270 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
2271 if (Config.EXTENDED_SM_LOGGING) {
2272 Log.d(
2273 Config.LOGTAG,
2274 account.getJid().asBareJid()
2275 + ": requesting ack for message stanza #"
2276 + stanzasSent);
2277 }
2278 tagWriter.writeStanzaAsync(new RequestPacket());
2279 }
2280 }
2281 }
2282 }
2283
2284 public void sendPing() {
2285 if (!r()) {
2286 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
2287 iq.setFrom(account.getJid());
2288 iq.addChild("ping", Namespace.PING);
2289 this.sendIqPacket(iq, null);
2290 }
2291 this.lastPingSent = SystemClock.elapsedRealtime();
2292 }
2293
2294 public void setOnMessagePacketReceivedListener(final OnMessagePacketReceived listener) {
2295 this.messageListener = listener;
2296 }
2297
2298 public void setOnUnregisteredIqPacketReceivedListener(final OnIqPacketReceived listener) {
2299 this.unregisteredIqListener = listener;
2300 }
2301
2302 public void setOnPresencePacketReceivedListener(final OnPresencePacketReceived listener) {
2303 this.presenceListener = listener;
2304 }
2305
2306 public void setOnJinglePacketReceivedListener(final OnJinglePacketReceived listener) {
2307 this.jingleListener = listener;
2308 }
2309
2310 public void setOnStatusChangedListener(final OnStatusChanged listener) {
2311 this.statusListener = listener;
2312 }
2313
2314 public void setOnBindListener(final OnBindListener listener) {
2315 this.bindListener = listener;
2316 }
2317
2318 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
2319 this.acknowledgedListener = listener;
2320 }
2321
2322 public void addOnAdvancedStreamFeaturesAvailableListener(
2323 final OnAdvancedStreamFeaturesLoaded listener) {
2324 this.advancedStreamFeaturesLoadedListeners.add(listener);
2325 }
2326
2327 private void forceCloseSocket() {
2328 FileBackend.close(this.socket);
2329 FileBackend.close(this.tagReader);
2330 }
2331
2332 public void interrupt() {
2333 if (this.mThread != null) {
2334 this.mThread.interrupt();
2335 }
2336 }
2337
2338 public void disconnect(final boolean force) {
2339 interrupt();
2340 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
2341 if (force) {
2342 forceCloseSocket();
2343 } else {
2344 final TagWriter currentTagWriter = this.tagWriter;
2345 if (currentTagWriter.isActive()) {
2346 currentTagWriter.finish();
2347 final Socket currentSocket = this.socket;
2348 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
2349 try {
2350 currentTagWriter.await(1, TimeUnit.SECONDS);
2351 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
2352 currentTagWriter.writeTag(Tag.end("stream:stream"));
2353 if (streamCountDownLatch != null) {
2354 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
2355 Log.d(
2356 Config.LOGTAG,
2357 account.getJid().asBareJid() + ": remote ended stream");
2358 } else {
2359 Log.d(
2360 Config.LOGTAG,
2361 account.getJid().asBareJid()
2362 + ": remote has not closed socket. force closing");
2363 }
2364 }
2365 } catch (InterruptedException e) {
2366 Log.d(
2367 Config.LOGTAG,
2368 account.getJid().asBareJid()
2369 + ": interrupted while gracefully closing stream");
2370 } catch (final IOException e) {
2371 Log.d(
2372 Config.LOGTAG,
2373 account.getJid().asBareJid()
2374 + ": io exception during disconnect ("
2375 + e.getMessage()
2376 + ")");
2377 } finally {
2378 FileBackend.close(currentSocket);
2379 }
2380 } else {
2381 forceCloseSocket();
2382 }
2383 }
2384 }
2385
2386 private void resetStreamId() {
2387 this.streamId = null;
2388 }
2389
2390 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
2391 synchronized (this.disco) {
2392 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
2393 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
2394 if (cursor.getValue().getFeatures().contains(feature)) {
2395 items.add(cursor);
2396 }
2397 }
2398 return items;
2399 }
2400 }
2401
2402 public Jid findDiscoItemByFeature(final String feature) {
2403 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
2404 if (items.size() >= 1) {
2405 return items.get(0).getKey();
2406 }
2407 return null;
2408 }
2409
2410 public boolean r() {
2411 if (getFeatures().sm()) {
2412 this.tagWriter.writeStanzaAsync(new RequestPacket());
2413 return true;
2414 } else {
2415 return false;
2416 }
2417 }
2418
2419 public List<String> getMucServersWithholdAccount() {
2420 final List<String> servers = getMucServers();
2421 servers.remove(account.getDomain().toEscapedString());
2422 return servers;
2423 }
2424
2425 public List<String> getMucServers() {
2426 List<String> servers = new ArrayList<>();
2427 synchronized (this.disco) {
2428 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
2429 final ServiceDiscoveryResult value = cursor.getValue();
2430 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
2431 && value.hasIdentity("conference", "text")
2432 && !value.getFeatures().contains("jabber:iq:gateway")
2433 && !value.hasIdentity("conference", "irc")) {
2434 servers.add(cursor.getKey().toString());
2435 }
2436 }
2437 }
2438 return servers;
2439 }
2440
2441 public String getMucServer() {
2442 List<String> servers = getMucServers();
2443 return servers.size() > 0 ? servers.get(0) : null;
2444 }
2445
2446 public int getTimeToNextAttempt() {
2447 final int additionalTime =
2448 account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
2449 final int interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
2450 final int secondsSinceLast =
2451 (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
2452 return interval - secondsSinceLast;
2453 }
2454
2455 public int getAttempt() {
2456 return this.attempt;
2457 }
2458
2459 public Features getFeatures() {
2460 return this.features;
2461 }
2462
2463 public long getLastSessionEstablished() {
2464 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
2465 return System.currentTimeMillis() - diff;
2466 }
2467
2468 public long getLastConnect() {
2469 return this.lastConnect;
2470 }
2471
2472 public long getLastPingSent() {
2473 return this.lastPingSent;
2474 }
2475
2476 public long getLastDiscoStarted() {
2477 return this.lastDiscoStarted;
2478 }
2479
2480 public long getLastPacketReceived() {
2481 return this.lastPacketReceived;
2482 }
2483
2484 public void sendActive() {
2485 this.sendPacket(new ActivePacket());
2486 }
2487
2488 public void sendInactive() {
2489 this.sendPacket(new InactivePacket());
2490 }
2491
2492 public void resetAttemptCount(boolean resetConnectTime) {
2493 this.attempt = 0;
2494 if (resetConnectTime) {
2495 this.lastConnect = 0;
2496 }
2497 }
2498
2499 public void setInteractive(boolean interactive) {
2500 this.mInteractive = interactive;
2501 }
2502
2503 public Identity getServerIdentity() {
2504 synchronized (this.disco) {
2505 ServiceDiscoveryResult result = disco.get(account.getJid().getDomain());
2506 if (result == null) {
2507 return Identity.UNKNOWN;
2508 }
2509 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
2510 if (id.getType().equals("im")
2511 && id.getCategory().equals("server")
2512 && id.getName() != null) {
2513 switch (id.getName()) {
2514 case "Prosody":
2515 return Identity.PROSODY;
2516 case "ejabberd":
2517 return Identity.EJABBERD;
2518 case "Slack-XMPP":
2519 return Identity.SLACK;
2520 }
2521 }
2522 }
2523 }
2524 return Identity.UNKNOWN;
2525 }
2526
2527 private IqGenerator getIqGenerator() {
2528 return mXmppConnectionService.getIqGenerator();
2529 }
2530
2531 public enum Identity {
2532 FACEBOOK,
2533 SLACK,
2534 EJABBERD,
2535 PROSODY,
2536 NIMBUZZ,
2537 UNKNOWN
2538 }
2539
2540 private class MyKeyManager implements X509KeyManager {
2541 @Override
2542 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
2543 return account.getPrivateKeyAlias();
2544 }
2545
2546 @Override
2547 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
2548 return null;
2549 }
2550
2551 @Override
2552 public X509Certificate[] getCertificateChain(String alias) {
2553 Log.d(Config.LOGTAG, "getting certificate chain");
2554 try {
2555 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
2556 } catch (final Exception e) {
2557 Log.d(Config.LOGTAG, "could not get certificate chain", e);
2558 return new X509Certificate[0];
2559 }
2560 }
2561
2562 @Override
2563 public String[] getClientAliases(String s, Principal[] principals) {
2564 final String alias = account.getPrivateKeyAlias();
2565 return alias != null ? new String[] {alias} : new String[0];
2566 }
2567
2568 @Override
2569 public String[] getServerAliases(String s, Principal[] principals) {
2570 return new String[0];
2571 }
2572
2573 @Override
2574 public PrivateKey getPrivateKey(String alias) {
2575 try {
2576 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
2577 } catch (Exception e) {
2578 return null;
2579 }
2580 }
2581 }
2582
2583 private static class StateChangingError extends Error {
2584 private final Account.State state;
2585
2586 public StateChangingError(Account.State state) {
2587 this.state = state;
2588 }
2589 }
2590
2591 private static class StateChangingException extends IOException {
2592 private final Account.State state;
2593
2594 public StateChangingException(Account.State state) {
2595 this.state = state;
2596 }
2597 }
2598
2599 public class Features {
2600 XmppConnection connection;
2601 private boolean carbonsEnabled = false;
2602 private boolean encryptionEnabled = false;
2603 private boolean blockListRequested = false;
2604
2605 public Features(final XmppConnection connection) {
2606 this.connection = connection;
2607 }
2608
2609 private boolean hasDiscoFeature(final Jid server, final String feature) {
2610 synchronized (XmppConnection.this.disco) {
2611 final ServiceDiscoveryResult sdr = connection.disco.get(server);
2612 return sdr != null && sdr.getFeatures().contains(feature);
2613 }
2614 }
2615
2616 public boolean carbons() {
2617 return hasDiscoFeature(account.getDomain(), Namespace.CARBONS);
2618 }
2619
2620 public boolean commands() {
2621 return hasDiscoFeature(account.getDomain(), Namespace.COMMANDS);
2622 }
2623
2624 public boolean easyOnboardingInvites() {
2625 synchronized (commands) {
2626 return commands.containsKey(Namespace.EASY_ONBOARDING_INVITE);
2627 }
2628 }
2629
2630 public boolean bookmarksConversion() {
2631 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION)
2632 && pepPublishOptions();
2633 }
2634
2635 public boolean avatarConversion() {
2636 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.AVATAR_CONVERSION)
2637 && pepPublishOptions();
2638 }
2639
2640 public boolean blocking() {
2641 return hasDiscoFeature(account.getDomain(), Namespace.BLOCKING);
2642 }
2643
2644 public boolean spamReporting() {
2645 return hasDiscoFeature(account.getDomain(), "urn:xmpp:reporting:reason:spam:0");
2646 }
2647
2648 public boolean flexibleOfflineMessageRetrieval() {
2649 return hasDiscoFeature(
2650 account.getDomain(), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
2651 }
2652
2653 public boolean register() {
2654 return hasDiscoFeature(account.getDomain(), Namespace.REGISTER);
2655 }
2656
2657 public boolean invite() {
2658 return connection.streamFeatures != null
2659 && connection.streamFeatures.hasChild("register", Namespace.INVITE);
2660 }
2661
2662 public boolean sm() {
2663 return streamId != null
2664 || (connection.streamFeatures != null
2665 && connection.streamFeatures.hasChild("sm"));
2666 }
2667
2668 public boolean csi() {
2669 return connection.streamFeatures != null
2670 && connection.streamFeatures.hasChild("csi", Namespace.CSI);
2671 }
2672
2673 public boolean pep() {
2674 synchronized (XmppConnection.this.disco) {
2675 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
2676 return info != null && info.hasIdentity("pubsub", "pep");
2677 }
2678 }
2679
2680 public boolean pepPersistent() {
2681 synchronized (XmppConnection.this.disco) {
2682 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
2683 return info != null
2684 && info.getFeatures()
2685 .contains("http://jabber.org/protocol/pubsub#persistent-items");
2686 }
2687 }
2688
2689 public boolean pepPublishOptions() {
2690 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
2691 }
2692
2693 public boolean pepOmemoWhitelisted() {
2694 return hasDiscoFeature(
2695 account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
2696 }
2697
2698 public boolean mam() {
2699 return MessageArchiveService.Version.has(getAccountFeatures());
2700 }
2701
2702 public List<String> getAccountFeatures() {
2703 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
2704 return result == null ? Collections.emptyList() : result.getFeatures();
2705 }
2706
2707 public boolean push() {
2708 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
2709 || hasDiscoFeature(account.getDomain(), Namespace.PUSH);
2710 }
2711
2712 public boolean rosterVersioning() {
2713 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
2714 }
2715
2716 public void setBlockListRequested(boolean value) {
2717 this.blockListRequested = value;
2718 }
2719
2720 public boolean httpUpload(long filesize) {
2721 if (Config.DISABLE_HTTP_UPLOAD) {
2722 return false;
2723 } else {
2724 for (String namespace :
2725 new String[] {Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
2726 List<Entry<Jid, ServiceDiscoveryResult>> items =
2727 findDiscoItemsByFeature(namespace);
2728 if (items.size() > 0) {
2729 try {
2730 long maxsize =
2731 Long.parseLong(
2732 items.get(0)
2733 .getValue()
2734 .getExtendedDiscoInformation(
2735 namespace, "max-file-size"));
2736 if (filesize <= maxsize) {
2737 return true;
2738 } else {
2739 Log.d(
2740 Config.LOGTAG,
2741 account.getJid().asBareJid()
2742 + ": http upload is not available for files with size "
2743 + filesize
2744 + " (max is "
2745 + maxsize
2746 + ")");
2747 return false;
2748 }
2749 } catch (Exception e) {
2750 return true;
2751 }
2752 }
2753 }
2754 return false;
2755 }
2756 }
2757
2758 public boolean useLegacyHttpUpload() {
2759 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null
2760 && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
2761 }
2762
2763 public long getMaxHttpUploadSize() {
2764 for (String namespace :
2765 new String[] {Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
2766 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
2767 if (items.size() > 0) {
2768 try {
2769 return Long.parseLong(
2770 items.get(0)
2771 .getValue()
2772 .getExtendedDiscoInformation(namespace, "max-file-size"));
2773 } catch (Exception e) {
2774 // ignored
2775 }
2776 }
2777 }
2778 return -1;
2779 }
2780
2781 public boolean stanzaIds() {
2782 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
2783 }
2784
2785 public boolean bookmarks2() {
2786 return Config
2787 .USE_BOOKMARKS2 /* || hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS2_COMPAT)*/;
2788 }
2789
2790 public boolean externalServiceDiscovery() {
2791 return hasDiscoFeature(account.getDomain(), Namespace.EXTERNAL_SERVICE_DISCOVERY);
2792 }
2793 }
2794}