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 final Element challenge = tagReader.readElement(nextTag);
581 processChallenge(challenge);
582 } else if (nextTag.isStart("enabled", Namespace.STREAM_MANAGEMENT)) {
583 final Element enabled = tagReader.readElement(nextTag);
584 processEnabled(enabled);
585 } else if (nextTag.isStart("resumed")) {
586 final Element resumed = tagReader.readElement(nextTag);
587 processResumed(resumed);
588 } else if (nextTag.isStart("r")) {
589 tagReader.readElement(nextTag);
590 if (Config.EXTENDED_SM_LOGGING) {
591 Log.d(
592 Config.LOGTAG,
593 account.getJid().asBareJid()
594 + ": acknowledging stanza #"
595 + this.stanzasReceived);
596 }
597 final AckPacket ack = new AckPacket(this.stanzasReceived);
598 tagWriter.writeStanzaAsync(ack);
599 } else if (nextTag.isStart("a")) {
600 boolean accountUiNeedsRefresh = false;
601 synchronized (NotificationService.CATCHUP_LOCK) {
602 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
603 final int messageCount = mSmCatchupMessageCounter.get();
604 final int pendingIQs = packetCallbacks.size();
605 Log.d(
606 Config.LOGTAG,
607 account.getJid().asBareJid()
608 + ": SM catchup complete (messages="
609 + messageCount
610 + ", pending IQs="
611 + pendingIQs
612 + ")");
613 accountUiNeedsRefresh = true;
614 if (messageCount > 0) {
615 mXmppConnectionService
616 .getNotificationService()
617 .finishBacklog(true, account);
618 }
619 }
620 }
621 if (accountUiNeedsRefresh) {
622 mXmppConnectionService.updateAccountUi();
623 }
624 final Element ack = tagReader.readElement(nextTag);
625 lastPacketReceived = SystemClock.elapsedRealtime();
626 try {
627 final boolean acknowledgedMessages;
628 synchronized (this.mStanzaQueue) {
629 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
630 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence);
631 }
632 if (acknowledgedMessages) {
633 mXmppConnectionService.updateConversationUi();
634 }
635 } catch (NumberFormatException | NullPointerException e) {
636 Log.d(
637 Config.LOGTAG,
638 account.getJid().asBareJid()
639 + ": server send ack without sequence number");
640 }
641 } else if (nextTag.isStart("failed")) {
642 final Element failed = tagReader.readElement(nextTag);
643 processFailed(failed, true);
644 } else if (nextTag.isStart("iq")) {
645 processIq(nextTag);
646 } else if (nextTag.isStart("message")) {
647 processMessage(nextTag);
648 } else if (nextTag.isStart("presence")) {
649 processPresence(nextTag);
650 }
651 nextTag = tagReader.readTag();
652 }
653 if (nextTag != null && nextTag.isEnd("stream")) {
654 streamCountDownLatch.countDown();
655 }
656 }
657
658 private void processChallenge(Element challenge) throws IOException {
659 final SaslMechanism.Version version;
660 try {
661 version = SaslMechanism.Version.of(challenge);
662 } catch (final IllegalArgumentException e) {
663 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
664 }
665 final Element response;
666 if (version == SaslMechanism.Version.SASL) {
667 response = new Element("response", Namespace.SASL);
668 } else if (version == SaslMechanism.Version.SASL_2) {
669 response = new Element("response", Namespace.SASL_2);
670 } else {
671 throw new AssertionError("Missing implementation for " + version);
672 }
673 try {
674 response.setContent(saslMechanism.getResponse(challenge.getContent(), sslSocketOrNull(socket)));
675 } catch (final SaslMechanism.AuthenticationException e) {
676 // TODO: Send auth abort tag.
677 Log.e(Config.LOGTAG, e.toString());
678 throw new StateChangingException(Account.State.UNAUTHORIZED);
679 }
680 tagWriter.writeElement(response);
681 }
682
683 private boolean processSuccess(final Element success)
684 throws IOException, XmlPullParserException {
685 final SaslMechanism.Version version;
686 try {
687 version = SaslMechanism.Version.of(success);
688 } catch (final IllegalArgumentException e) {
689 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
690 }
691 final String challenge;
692 if (version == SaslMechanism.Version.SASL) {
693 challenge = success.getContent();
694 } else if (version == SaslMechanism.Version.SASL_2) {
695 challenge = success.findChildContent("additional-data");
696 } else {
697 throw new AssertionError("Missing implementation for " + version);
698 }
699 try {
700 saslMechanism.getResponse(challenge, sslSocketOrNull(socket));
701 } catch (final SaslMechanism.AuthenticationException e) {
702 Log.e(Config.LOGTAG, String.valueOf(e));
703 throw new StateChangingException(Account.State.UNAUTHORIZED);
704 }
705 Log.d(
706 Config.LOGTAG,
707 account.getJid().asBareJid().toString() + ": logged in (using " + version + ")");
708 if (SaslMechanism.pin(this.saslMechanism)) {
709 account.setPinnedMechanism(this.saslMechanism);
710 }
711 if (version == SaslMechanism.Version.SASL_2) {
712 final Tag tag = tagReader.readTag();
713 if (tag != null && tag.isStart("features", Namespace.STREAMS)) {
714 this.streamFeatures = tagReader.readElement(tag);
715 Log.d(
716 Config.LOGTAG,
717 account.getJid().asBareJid()
718 + ": processed NOP stream features after success "
719 + XmlHelper.printElementNames(this.streamFeatures));
720 } else {
721 Log.d(
722 Config.LOGTAG,
723 account.getJid().asBareJid()
724 + ": server did not send stream features after SASL2 success");
725 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
726 }
727 final String authorizationIdentifier =
728 success.findChildContent("authorization-identifier");
729 final Jid authorizationJid;
730 try {
731 authorizationJid =
732 Strings.isNullOrEmpty(authorizationIdentifier)
733 ? null
734 : Jid.ofEscaped(authorizationIdentifier);
735 } catch (final IllegalArgumentException e) {
736 Log.d(
737 Config.LOGTAG,
738 account.getJid().asBareJid()
739 + ": SASL 2.0 authorization identifier was not a valid jid");
740 throw new StateChangingException(Account.State.BIND_FAILURE);
741 }
742 if (authorizationJid == null) {
743 throw new StateChangingException(Account.State.BIND_FAILURE);
744 }
745 Log.d(
746 Config.LOGTAG,
747 account.getJid().asBareJid()
748 + ": SASL 2.0 authorization identifier was "
749 + authorizationJid);
750 if (!account.getJid().getDomain().equals(authorizationJid.getDomain())) {
751 Log.d(
752 Config.LOGTAG,
753 account.getJid().asBareJid()
754 + ": server tried to re-assign domain to "
755 + authorizationJid.getDomain());
756 throw new StateChangingError(Account.State.BIND_FAILURE);
757 }
758 if (authorizationJid.isFullJid() && account.setJid(authorizationJid)) {
759 Log.d(
760 Config.LOGTAG,
761 account.getJid().asBareJid()
762 + ": jid changed during SASL 2.0. updating database");
763 }
764 final Element bound = success.findChild("bound", Namespace.BIND2);
765 final Element resumed = success.findChild("resumed", "urn:xmpp:sm:3");
766 final Element failed = success.findChild("failed", "urn:xmpp:sm:3");
767 final Element tokenWrapper = success.findChild("token", Namespace.FAST);
768 final String token = tokenWrapper == null ? null : tokenWrapper.getAttribute("token");
769 if (bound != null && resumed != null) {
770 Log.d(
771 Config.LOGTAG,
772 account.getJid().asBareJid()
773 + ": server sent bound and resumed in SASL2 success");
774 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
775 }
776 if (resumed != null && streamId != null) {
777 processResumed(resumed);
778 } else if (failed != null) {
779 processFailed(failed, false); // wait for new stream features
780 }
781 if (bound != null) {
782 clearIqCallbacks();
783 this.isBound = true;
784 final Element streamManagementEnabled =
785 bound.findChild("enabled", Namespace.STREAM_MANAGEMENT);
786 final Element carbonsEnabled = bound.findChild("enabled", Namespace.CARBONS);
787 final boolean waitForDisco;
788 if (streamManagementEnabled != null) {
789 processEnabled(streamManagementEnabled);
790 waitForDisco = true;
791 } else {
792 //if we did not enable stream management in bind do it now
793 waitForDisco = enableStreamManagement();
794 }
795 if (carbonsEnabled != null) {
796 Log.d(
797 Config.LOGTAG,
798 account.getJid().asBareJid() + ": successfully enabled carbons");
799 features.carbonsEnabled = true;
800 }
801 sendPostBindInitialization(waitForDisco, carbonsEnabled != null);
802 }
803 final HashedToken.Mechanism tokenMechanism;
804 final SaslMechanism currentMechanism = this.saslMechanism;
805 if (currentMechanism instanceof HashedToken) {
806 tokenMechanism = ((HashedToken) currentMechanism).getTokenMechanism();
807 } else if (this.hashTokenRequest != null) {
808 tokenMechanism = this.hashTokenRequest;
809 } else {
810 tokenMechanism = null;
811 }
812 if (tokenMechanism != null && !Strings.isNullOrEmpty(token)) {
813 this.account.setFastToken(tokenMechanism,token);
814 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": storing hashed token "+tokenMechanism);
815 }
816 }
817 mXmppConnectionService.databaseBackend.updateAccount(account);
818 this.quickStartInProgress = false;
819 if (version == SaslMechanism.Version.SASL) {
820 tagReader.reset();
821 sendStartStream(false, true);
822 final Tag tag = tagReader.readTag();
823 if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
824 processStream();
825 return true;
826 } else {
827 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
828 }
829 } else {
830 return false;
831 }
832 }
833
834 private void processFailure(final Element failure) throws StateChangingException {
835 final SaslMechanism.Version version;
836 try {
837 version = SaslMechanism.Version.of(failure);
838 } catch (final IllegalArgumentException e) {
839 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
840 }
841 Log.d(Config.LOGTAG,failure.toString());
842 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": login failure " + version);
843 //TODO check if we are doing FAST; reset token
844 if (failure.hasChild("temporary-auth-failure")) {
845 throw new StateChangingException(Account.State.TEMPORARY_AUTH_FAILURE);
846 } else if (failure.hasChild("account-disabled")) {
847 final String text = failure.findChildContent("text");
848 if (Strings.isNullOrEmpty(text)) {
849 throw new StateChangingException(Account.State.UNAUTHORIZED);
850 }
851 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
852 if (matcher.find()) {
853 final HttpUrl url;
854 try {
855 url = HttpUrl.get(text.substring(matcher.start(), matcher.end()));
856 } catch (final IllegalArgumentException e) {
857 throw new StateChangingException(Account.State.UNAUTHORIZED);
858 }
859 if (url.isHttps()) {
860 this.redirectionUrl = url;
861 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
862 }
863 }
864 }
865 throw new StateChangingException(Account.State.UNAUTHORIZED);
866 }
867
868 private static SSLSocket sslSocketOrNull(final Socket socket) {
869 if (socket instanceof SSLSocket) {
870 return (SSLSocket) socket;
871 } else {
872 return null;
873 }
874 }
875
876 private void processEnabled(final Element enabled) {
877 final String streamId;
878 if (enabled.getAttributeAsBoolean("resume")) {
879 streamId = enabled.getAttribute("id");
880 Log.d(
881 Config.LOGTAG,
882 account.getJid().asBareJid().toString()
883 + ": stream management enabled (resumable)");
884 } else {
885 Log.d(
886 Config.LOGTAG,
887 account.getJid().asBareJid().toString() + ": stream management enabled");
888 streamId = null;
889 }
890 this.streamId = streamId;
891 this.stanzasReceived = 0;
892 this.inSmacksSession = true;
893 final RequestPacket r = new RequestPacket();
894 tagWriter.writeStanzaAsync(r);
895 }
896
897 private void processResumed(final Element resumed) throws StateChangingException {
898 this.inSmacksSession = true;
899 this.isBound = true;
900 this.tagWriter.writeStanzaAsync(new RequestPacket());
901 lastPacketReceived = SystemClock.elapsedRealtime();
902 final String h = resumed.getAttribute("h");
903 if (h == null) {
904 resetStreamId();
905 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
906 }
907 final int serverCount;
908 try {
909 serverCount = Integer.parseInt(h);
910 } catch (final NumberFormatException e) {
911 resetStreamId();
912 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
913 }
914 final ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
915 final boolean acknowledgedMessages;
916 synchronized (this.mStanzaQueue) {
917 if (serverCount < stanzasSent) {
918 Log.d(
919 Config.LOGTAG,
920 account.getJid().asBareJid() + ": session resumed with lost packages");
921 stanzasSent = serverCount;
922 } else {
923 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": session resumed");
924 }
925 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
926 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
927 failedStanzas.add(mStanzaQueue.valueAt(i));
928 }
929 mStanzaQueue.clear();
930 }
931 if (acknowledgedMessages) {
932 mXmppConnectionService.updateConversationUi();
933 }
934 Log.d(
935 Config.LOGTAG,
936 account.getJid().asBareJid() + ": resending " + failedStanzas.size() + " stanzas");
937 for (final AbstractAcknowledgeableStanza packet : failedStanzas) {
938 if (packet instanceof MessagePacket) {
939 MessagePacket message = (MessagePacket) packet;
940 mXmppConnectionService.markMessage(
941 account,
942 message.getTo().asBareJid(),
943 message.getId(),
944 Message.STATUS_UNSEND);
945 }
946 sendPacket(packet);
947 }
948 changeStatusToOnline();
949 }
950
951 private void changeStatusToOnline() {
952 Log.d(
953 Config.LOGTAG,
954 account.getJid().asBareJid() + ": online with resource " + account.getResource());
955 changeStatus(Account.State.ONLINE);
956 }
957
958 private void processFailed(final Element failed, final boolean sendBindRequest) {
959 final int serverCount;
960 try {
961 serverCount = Integer.parseInt(failed.getAttribute("h"));
962 } catch (final NumberFormatException | NullPointerException e) {
963 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
964 resetStreamId();
965 if (sendBindRequest) {
966 sendBindRequest();
967 }
968 return;
969 }
970 Log.d(
971 Config.LOGTAG,
972 account.getJid().asBareJid()
973 + ": resumption failed but server acknowledged stanza #"
974 + serverCount);
975 final boolean acknowledgedMessages;
976 synchronized (this.mStanzaQueue) {
977 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
978 }
979 if (acknowledgedMessages) {
980 mXmppConnectionService.updateConversationUi();
981 }
982 resetStreamId();
983 if (sendBindRequest) {
984 sendBindRequest();
985 }
986 }
987
988 private boolean acknowledgeStanzaUpTo(int serverCount) {
989 if (serverCount > stanzasSent) {
990 Log.e(
991 Config.LOGTAG,
992 "server acknowledged more stanzas than we sent. serverCount="
993 + serverCount
994 + ", ourCount="
995 + stanzasSent);
996 }
997 boolean acknowledgedMessages = false;
998 for (int i = 0; i < mStanzaQueue.size(); ++i) {
999 if (serverCount >= mStanzaQueue.keyAt(i)) {
1000 if (Config.EXTENDED_SM_LOGGING) {
1001 Log.d(
1002 Config.LOGTAG,
1003 account.getJid().asBareJid()
1004 + ": server acknowledged stanza #"
1005 + mStanzaQueue.keyAt(i));
1006 }
1007 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
1008 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
1009 final MessagePacket packet = (MessagePacket) stanza;
1010 final String id = packet.getId();
1011 final Jid to = packet.getTo();
1012 if (id != null && to != null) {
1013 acknowledgedMessages |=
1014 acknowledgedListener.onMessageAcknowledged(account, to, id);
1015 }
1016 }
1017 mStanzaQueue.removeAt(i);
1018 i--;
1019 }
1020 }
1021 return acknowledgedMessages;
1022 }
1023
1024 private @NonNull Element processPacket(final Tag currentTag, final int packetType)
1025 throws IOException {
1026 final Element element;
1027 switch (packetType) {
1028 case PACKET_IQ:
1029 element = new IqPacket();
1030 break;
1031 case PACKET_MESSAGE:
1032 element = new MessagePacket();
1033 break;
1034 case PACKET_PRESENCE:
1035 element = new PresencePacket();
1036 break;
1037 default:
1038 throw new AssertionError("Should never encounter invalid type");
1039 }
1040 element.setAttributes(currentTag.getAttributes());
1041 Tag nextTag = tagReader.readTag();
1042 if (nextTag == null) {
1043 throw new IOException("interrupted mid tag");
1044 }
1045 while (!nextTag.isEnd(element.getName())) {
1046 if (!nextTag.isNo()) {
1047 element.addChild(tagReader.readElement(nextTag));
1048 }
1049 nextTag = tagReader.readTag();
1050 if (nextTag == null) {
1051 throw new IOException("interrupted mid tag");
1052 }
1053 }
1054 if (stanzasReceived == Integer.MAX_VALUE) {
1055 resetStreamId();
1056 throw new IOException("time to restart the session. cant handle >2 billion pcks");
1057 }
1058 if (inSmacksSession) {
1059 ++stanzasReceived;
1060 } else if (features.sm()) {
1061 Log.d(
1062 Config.LOGTAG,
1063 account.getJid().asBareJid()
1064 + ": not counting stanza("
1065 + element.getClass().getSimpleName()
1066 + "). Not in smacks session.");
1067 }
1068 lastPacketReceived = SystemClock.elapsedRealtime();
1069 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
1070 Log.d(Config.LOGTAG, "[background stanza] " + element);
1071 }
1072 if (element instanceof IqPacket
1073 && (((IqPacket) element).getType() == IqPacket.TYPE.SET)
1074 && element.hasChild("jingle", Namespace.JINGLE)) {
1075 return JinglePacket.upgrade((IqPacket) element);
1076 } else {
1077 return element;
1078 }
1079 }
1080
1081 private void processIq(final Tag currentTag) throws IOException {
1082 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
1083 if (!packet.valid()) {
1084 Log.e(
1085 Config.LOGTAG,
1086 "encountered invalid iq from='"
1087 + packet.getFrom()
1088 + "' to='"
1089 + packet.getTo()
1090 + "'");
1091 return;
1092 }
1093 if (packet instanceof JinglePacket) {
1094 if (this.jingleListener != null) {
1095 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
1096 }
1097 } else {
1098 OnIqPacketReceived callback = null;
1099 synchronized (this.packetCallbacks) {
1100 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple =
1101 packetCallbacks.get(packet.getId());
1102 if (packetCallbackDuple != null) {
1103 // Packets to the server should have responses from the server
1104 if (packetCallbackDuple.first.toServer(account)) {
1105 if (packet.fromServer(account)) {
1106 callback = packetCallbackDuple.second;
1107 packetCallbacks.remove(packet.getId());
1108 } else {
1109 Log.e(
1110 Config.LOGTAG,
1111 account.getJid().asBareJid().toString()
1112 + ": ignoring spoofed iq packet");
1113 }
1114 } else {
1115 if (packet.getFrom() != null
1116 && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
1117 callback = packetCallbackDuple.second;
1118 packetCallbacks.remove(packet.getId());
1119 } else {
1120 Log.e(
1121 Config.LOGTAG,
1122 account.getJid().asBareJid().toString()
1123 + ": ignoring spoofed iq packet");
1124 }
1125 }
1126 } else if (packet.getType() == IqPacket.TYPE.GET
1127 || packet.getType() == IqPacket.TYPE.SET) {
1128 callback = this.unregisteredIqListener;
1129 }
1130 }
1131 if (callback != null) {
1132 try {
1133 callback.onIqPacketReceived(account, packet);
1134 } catch (StateChangingError error) {
1135 throw new StateChangingException(error.state);
1136 }
1137 }
1138 }
1139 }
1140
1141 private void processMessage(final Tag currentTag) throws IOException {
1142 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
1143 if (!packet.valid()) {
1144 Log.e(
1145 Config.LOGTAG,
1146 "encountered invalid message from='"
1147 + packet.getFrom()
1148 + "' to='"
1149 + packet.getTo()
1150 + "'");
1151 return;
1152 }
1153 this.messageListener.onMessagePacketReceived(account, packet);
1154 }
1155
1156 private void processPresence(final Tag currentTag) throws IOException {
1157 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
1158 if (!packet.valid()) {
1159 Log.e(
1160 Config.LOGTAG,
1161 "encountered invalid presence from='"
1162 + packet.getFrom()
1163 + "' to='"
1164 + packet.getTo()
1165 + "'");
1166 return;
1167 }
1168 this.presenceListener.onPresencePacketReceived(account, packet);
1169 }
1170
1171 private void sendStartTLS() throws IOException {
1172 final Tag startTLS = Tag.empty("starttls");
1173 startTLS.setAttribute("xmlns", Namespace.TLS);
1174 tagWriter.writeTag(startTLS);
1175 }
1176
1177 private void switchOverToTls() throws XmlPullParserException, IOException {
1178 tagReader.readTag();
1179 final Socket socket = this.socket;
1180 final SSLSocket sslSocket = upgradeSocketToTls(socket);
1181 tagReader.setInputStream(sslSocket.getInputStream());
1182 tagWriter.setOutputStream(sslSocket.getOutputStream());
1183 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
1184 final boolean quickStart;
1185 try {
1186 quickStart = establishStream(SSLSockets.version(sslSocket));
1187 } catch (final InterruptedException e) {
1188 return;
1189 }
1190 if (quickStart) {
1191 this.quickStartInProgress = true;
1192 }
1193 features.encryptionEnabled = true;
1194 final Tag tag = tagReader.readTag();
1195 if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
1196 SSLSockets.log(account, sslSocket);
1197 processStream();
1198 } else {
1199 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
1200 }
1201 sslSocket.close();
1202 }
1203
1204 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
1205 final SSLSocketFactory sslSocketFactory;
1206 try {
1207 sslSocketFactory = getSSLSocketFactory();
1208 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
1209 throw new StateChangingException(Account.State.TLS_ERROR);
1210 }
1211 final InetAddress address = socket.getInetAddress();
1212 final SSLSocket sslSocket =
1213 (SSLSocket)
1214 sslSocketFactory.createSocket(
1215 socket, address.getHostAddress(), socket.getPort(), true);
1216 SSLSockets.setSecurity(sslSocket);
1217 SSLSockets.setHostname(sslSocket, IDN.toASCII(account.getServer()));
1218 SSLSockets.setApplicationProtocol(sslSocket, "xmpp-client");
1219 final XmppDomainVerifier xmppDomainVerifier = new XmppDomainVerifier();
1220 try {
1221 if (!xmppDomainVerifier.verify(
1222 account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
1223 Log.d(
1224 Config.LOGTAG,
1225 account.getJid().asBareJid()
1226 + ": TLS certificate domain verification failed");
1227 FileBackend.close(sslSocket);
1228 throw new StateChangingException(Account.State.TLS_ERROR_DOMAIN);
1229 }
1230 } catch (final SSLPeerUnverifiedException e) {
1231 FileBackend.close(sslSocket);
1232 throw new StateChangingException(Account.State.TLS_ERROR);
1233 }
1234 return sslSocket;
1235 }
1236
1237 private void processStreamFeatures(final Tag currentTag) throws IOException {
1238 this.streamFeatures = tagReader.readElement(currentTag);
1239 final boolean isSecure =
1240 features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
1241 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
1242 if (this.quickStartInProgress) {
1243 if (this.streamFeatures.hasChild("authentication", Namespace.SASL_2)) {
1244 Log.d(
1245 Config.LOGTAG,
1246 account.getJid().asBareJid()
1247 + ": quick start in progress. ignoring features: "
1248 + XmlHelper.printElementNames(this.streamFeatures));
1249 //TODO check if 'fast' is available but we are doing something else
1250 return;
1251 }
1252 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": server lost support for SASL 2. quick start not possible");
1253 this.account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, false);
1254 mXmppConnectionService.updateAccount(account);
1255 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1256 }
1257 if (this.streamFeatures.hasChild("starttls", Namespace.TLS)
1258 && !features.encryptionEnabled) {
1259 sendStartTLS();
1260 } else if (this.streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1261 && account.isOptionSet(Account.OPTION_REGISTER)) {
1262 if (isSecure) {
1263 register();
1264 } else {
1265 Log.d(
1266 Config.LOGTAG,
1267 account.getJid().asBareJid()
1268 + ": unable to find STARTTLS for registration process "
1269 + XmlHelper.printElementNames(this.streamFeatures));
1270 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1271 }
1272 } else if (!this.streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
1273 && account.isOptionSet(Account.OPTION_REGISTER)) {
1274 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
1275 } else if (this.streamFeatures.hasChild("authentication", Namespace.SASL_2)
1276 && shouldAuthenticate
1277 && isSecure) {
1278 authenticate(SaslMechanism.Version.SASL_2);
1279 } else if (this.streamFeatures.hasChild("mechanisms", Namespace.SASL)
1280 && shouldAuthenticate
1281 && isSecure) {
1282 authenticate(SaslMechanism.Version.SASL);
1283 } else if (this.streamFeatures.hasChild("sm", Namespace.STREAM_MANAGEMENT)
1284 && streamId != null
1285 && !inSmacksSession) {
1286 if (Config.EXTENDED_SM_LOGGING) {
1287 Log.d(
1288 Config.LOGTAG,
1289 account.getJid().asBareJid()
1290 + ": resuming after stanza #"
1291 + stanzasReceived);
1292 }
1293 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived);
1294 this.mSmCatchupMessageCounter.set(0);
1295 this.mWaitingForSmCatchup.set(true);
1296 this.tagWriter.writeStanzaAsync(resume);
1297 } else if (needsBinding) {
1298 if (this.streamFeatures.hasChild("bind", Namespace.BIND) && isSecure) {
1299 sendBindRequest();
1300 } else {
1301 Log.d(
1302 Config.LOGTAG,
1303 account.getJid().asBareJid()
1304 + ": unable to find bind feature "
1305 + XmlHelper.printElementNames(this.streamFeatures));
1306 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1307 }
1308 } else {
1309 Log.d(
1310 Config.LOGTAG,
1311 account.getJid().asBareJid()
1312 + ": received NOP stream features "
1313 + XmlHelper.printElementNames(this.streamFeatures));
1314 }
1315 }
1316
1317 private void authenticate(final SaslMechanism.Version version) throws IOException {
1318 final Element authElement;
1319 if (version == SaslMechanism.Version.SASL) {
1320 authElement = this.streamFeatures.findChild("mechanisms", Namespace.SASL);
1321 } else {
1322 authElement = this.streamFeatures.findChild("authentication", Namespace.SASL_2);
1323 }
1324 final Collection<String> mechanisms = SaslMechanism.mechanisms(authElement);
1325 final Element cbElement =
1326 this.streamFeatures.findChild("sasl-channel-binding", Namespace.CHANNEL_BINDING);
1327 final Collection<ChannelBinding> channelBindings = ChannelBinding.of(cbElement);
1328 final SaslMechanism.Factory factory = new SaslMechanism.Factory(account);
1329 final SaslMechanism saslMechanism = factory.of(mechanisms, channelBindings, version, SSLSockets.version(this.socket));
1330 this.saslMechanism = validate(saslMechanism, mechanisms);
1331 final boolean quickStartAvailable;
1332 final String firstMessage = this.saslMechanism.getClientFirstMessage(sslSocketOrNull(this.socket));
1333 final boolean usingFast = SaslMechanism.hashedToken(this.saslMechanism);
1334 final Element authenticate;
1335 if (version == SaslMechanism.Version.SASL) {
1336 authenticate = new Element("auth", Namespace.SASL);
1337 if (!Strings.isNullOrEmpty(firstMessage)) {
1338 authenticate.setContent(firstMessage);
1339 }
1340 quickStartAvailable = false;
1341 } else if (version == SaslMechanism.Version.SASL_2) {
1342 final Element inline = authElement.findChild("inline", Namespace.SASL_2);
1343 final boolean sm = inline != null && inline.hasChild("sm", "urn:xmpp:sm:3");
1344 final HashedToken.Mechanism hashTokenRequest;
1345 if (usingFast) {
1346 hashTokenRequest = null;
1347 } else {
1348 final Element fast = inline == null ? null : inline.findChild("fast", Namespace.FAST);
1349 final Collection<String> fastMechanisms = SaslMechanism.mechanisms(fast);
1350 hashTokenRequest =
1351 HashedToken.Mechanism.best(fastMechanisms, SSLSockets.version(this.socket));
1352 }
1353 final Collection<String> bindFeatures = Bind2.features(inline);
1354 quickStartAvailable =
1355 sm
1356 && bindFeatures != null
1357 && bindFeatures.containsAll(Bind2.QUICKSTART_FEATURES);
1358 if (bindFeatures != null) {
1359 try {
1360 mXmppConnectionService.restoredFromDatabaseLatch.await();
1361 } catch (final InterruptedException e) {
1362 Log.d(
1363 Config.LOGTAG,
1364 account.getJid().asBareJid()
1365 + ": interrupted while waiting for DB restore during SASL2 bind");
1366 return;
1367 }
1368 }
1369 this.hashTokenRequest = hashTokenRequest;
1370 authenticate = generateAuthenticationRequest(firstMessage, usingFast, hashTokenRequest, bindFeatures, sm);
1371 } else {
1372 throw new AssertionError("Missing implementation for " + version);
1373 }
1374
1375 if (account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, quickStartAvailable)) {
1376 mXmppConnectionService.updateAccount(account);
1377 }
1378
1379 Log.d(
1380 Config.LOGTAG,
1381 account.getJid().toString()
1382 + ": Authenticating with "
1383 + version
1384 + "/"
1385 + this.saslMechanism.getMechanism());
1386 authenticate.setAttribute("mechanism", this.saslMechanism.getMechanism());
1387 tagWriter.writeElement(authenticate);
1388 }
1389
1390 @NonNull
1391 private SaslMechanism validate(final @Nullable SaslMechanism saslMechanism, Collection<String> mechanisms) throws StateChangingException {
1392 if (saslMechanism == null) {
1393 Log.d(
1394 Config.LOGTAG,
1395 account.getJid().asBareJid()
1396 + ": unable to find supported SASL mechanism in "
1397 + mechanisms);
1398 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1399 }
1400 if (SaslMechanism.hashedToken(saslMechanism)) {
1401 return saslMechanism;
1402 }
1403 final int pinnedMechanism = account.getPinnedMechanismPriority();
1404 if (pinnedMechanism > saslMechanism.getPriority()) {
1405 Log.e(
1406 Config.LOGTAG,
1407 "Auth failed. Authentication mechanism "
1408 + saslMechanism.getMechanism()
1409 + " has lower priority ("
1410 + saslMechanism.getPriority()
1411 + ") than pinned priority ("
1412 + pinnedMechanism
1413 + "). Possible downgrade attack?");
1414 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
1415 }
1416 return saslMechanism;
1417 }
1418
1419 private Element generateAuthenticationRequest(final String firstMessage, final boolean usingFast) {
1420 return generateAuthenticationRequest(firstMessage, usingFast, null, Bind2.QUICKSTART_FEATURES, true);
1421 }
1422
1423 private Element generateAuthenticationRequest(
1424 final String firstMessage,
1425 final boolean usingFast,
1426 final HashedToken.Mechanism hashedTokenRequest,
1427 final Collection<String> bind,
1428 final boolean inlineStreamManagement) {
1429 final Element authenticate = new Element("authenticate", Namespace.SASL_2);
1430 if (!Strings.isNullOrEmpty(firstMessage)) {
1431 authenticate.addChild("initial-response").setContent(firstMessage);
1432 }
1433 final Element userAgent = authenticate.addChild("user-agent");
1434 userAgent.setAttribute("id", account.getUuid());
1435 userAgent
1436 .addChild("software")
1437 .setContent(mXmppConnectionService.getString(R.string.app_name));
1438 if (!PhoneHelper.isEmulator()) {
1439 userAgent
1440 .addChild("device")
1441 .setContent(String.format("%s %s", Build.MANUFACTURER, Build.MODEL));
1442 }
1443 if (bind != null) {
1444 authenticate.addChild(generateBindRequest(bind));
1445 }
1446 if (inlineStreamManagement && streamId != null) {
1447 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived);
1448 this.mSmCatchupMessageCounter.set(0);
1449 this.mWaitingForSmCatchup.set(true);
1450 authenticate.addChild(resume);
1451 }
1452 if (hashedTokenRequest != null) {
1453 authenticate
1454 .addChild("request-token", Namespace.FAST)
1455 .setAttribute("mechanism", hashedTokenRequest.name());
1456 }
1457 if (usingFast) {
1458 authenticate.addChild("fast", Namespace.FAST);
1459 }
1460 return authenticate;
1461 }
1462
1463 private Element generateBindRequest(final Collection<String> bindFeatures) {
1464 Log.d(Config.LOGTAG, "inline bind features: " + bindFeatures);
1465 final Element bind = new Element("bind", Namespace.BIND2);
1466 bind.addChild("tag").setContent(mXmppConnectionService.getString(R.string.app_name));
1467 if (bindFeatures.contains(Namespace.CARBONS)) {
1468 bind.addChild("enable", Namespace.CARBONS);
1469 }
1470 if (bindFeatures.contains(Namespace.STREAM_MANAGEMENT)) {
1471 bind.addChild(new EnablePacket());
1472 }
1473 return bind;
1474 }
1475
1476 private void register() {
1477 final String preAuth = account.getKey(Account.KEY_PRE_AUTH_REGISTRATION_TOKEN);
1478 if (preAuth != null && features.invite()) {
1479 final IqPacket preAuthRequest = new IqPacket(IqPacket.TYPE.SET);
1480 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
1481 sendUnmodifiedIqPacket(
1482 preAuthRequest,
1483 (account, response) -> {
1484 if (response.getType() == IqPacket.TYPE.RESULT) {
1485 sendRegistryRequest();
1486 } else {
1487 final String error = response.getErrorCondition();
1488 Log.d(
1489 Config.LOGTAG,
1490 account.getJid().asBareJid()
1491 + ": failed to pre auth. "
1492 + error);
1493 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
1494 }
1495 },
1496 true);
1497 } else {
1498 sendRegistryRequest();
1499 }
1500 }
1501
1502 private void sendRegistryRequest() {
1503 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
1504 register.query(Namespace.REGISTER);
1505 register.setTo(account.getDomain());
1506 sendUnmodifiedIqPacket(
1507 register,
1508 (account, packet) -> {
1509 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1510 return;
1511 }
1512 if (packet.getType() == IqPacket.TYPE.ERROR) {
1513 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1514 }
1515 final Element query = packet.query(Namespace.REGISTER);
1516 if (query.hasChild("username") && (query.hasChild("password"))) {
1517 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
1518 final Element username =
1519 new Element("username").setContent(account.getUsername());
1520 final Element password =
1521 new Element("password").setContent(account.getPassword());
1522 register1.query(Namespace.REGISTER).addChild(username);
1523 register1.query().addChild(password);
1524 register1.setFrom(account.getJid().asBareJid());
1525 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
1526 } else if (query.hasChild("x", Namespace.DATA)) {
1527 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
1528 final Element blob = query.findChild("data", "urn:xmpp:bob");
1529 final String id = packet.getId();
1530 InputStream is;
1531 if (blob != null) {
1532 try {
1533 final String base64Blob = blob.getContent();
1534 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
1535 is = new ByteArrayInputStream(strBlob);
1536 } catch (Exception e) {
1537 is = null;
1538 }
1539 } else {
1540 final boolean useTor =
1541 mXmppConnectionService.useTorToConnect() || account.isOnion();
1542 try {
1543 final String url = data.getValue("url");
1544 final String fallbackUrl = data.getValue("captcha-fallback-url");
1545 if (url != null) {
1546 is = HttpConnectionManager.open(url, useTor);
1547 } else if (fallbackUrl != null) {
1548 is = HttpConnectionManager.open(fallbackUrl, useTor);
1549 } else {
1550 is = null;
1551 }
1552 } catch (final IOException e) {
1553 Log.d(
1554 Config.LOGTAG,
1555 account.getJid().asBareJid() + ": unable to fetch captcha",
1556 e);
1557 is = null;
1558 }
1559 }
1560
1561 if (is != null) {
1562 Bitmap captcha = BitmapFactory.decodeStream(is);
1563 try {
1564 if (mXmppConnectionService.displayCaptchaRequest(
1565 account, id, data, captcha)) {
1566 return;
1567 }
1568 } catch (Exception e) {
1569 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1570 }
1571 }
1572 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1573 } else if (query.hasChild("instructions")
1574 || query.hasChild("x", Namespace.OOB)) {
1575 final String instructions = query.findChildContent("instructions");
1576 final Element oob = query.findChild("x", Namespace.OOB);
1577 final String url = oob == null ? null : oob.findChildContent("url");
1578 if (url != null) {
1579 setAccountCreationFailed(url);
1580 } else if (instructions != null) {
1581 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
1582 if (matcher.find()) {
1583 setAccountCreationFailed(
1584 instructions.substring(matcher.start(), matcher.end()));
1585 }
1586 }
1587 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1588 }
1589 },
1590 true);
1591 }
1592
1593 private void setAccountCreationFailed(final String url) {
1594 final HttpUrl httpUrl = url == null ? null : HttpUrl.parse(url);
1595 if (httpUrl != null && httpUrl.isHttps()) {
1596 this.redirectionUrl = httpUrl;
1597 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1598 }
1599 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1600 }
1601
1602 public HttpUrl getRedirectionUrl() {
1603 return this.redirectionUrl;
1604 }
1605
1606 public void resetEverything() {
1607 resetAttemptCount(true);
1608 resetStreamId();
1609 clearIqCallbacks();
1610 this.stanzasSent = 0;
1611 mStanzaQueue.clear();
1612 this.redirectionUrl = null;
1613 synchronized (this.disco) {
1614 disco.clear();
1615 }
1616 synchronized (this.commands) {
1617 this.commands.clear();
1618 }
1619 }
1620
1621 private void sendBindRequest() {
1622 try {
1623 mXmppConnectionService.restoredFromDatabaseLatch.await();
1624 } catch (InterruptedException e) {
1625 Log.d(
1626 Config.LOGTAG,
1627 account.getJid().asBareJid()
1628 + ": interrupted while waiting for DB restore during bind");
1629 return;
1630 }
1631 clearIqCallbacks();
1632 if (account.getJid().isBareJid()) {
1633 account.setResource(this.createNewResource());
1634 } else {
1635 fixResource(mXmppConnectionService, account);
1636 }
1637 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1638 final String resource =
1639 Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1640 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1641 this.sendUnmodifiedIqPacket(
1642 iq,
1643 (account, packet) -> {
1644 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1645 return;
1646 }
1647 final Element bind = packet.findChild("bind");
1648 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1649 isBound = true;
1650 final Element jid = bind.findChild("jid");
1651 if (jid != null && jid.getContent() != null) {
1652 try {
1653 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1654 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1655 Log.d(
1656 Config.LOGTAG,
1657 account.getJid().asBareJid()
1658 + ": server tried to re-assign domain to "
1659 + assignedJid.getDomain());
1660 throw new StateChangingError(Account.State.BIND_FAILURE);
1661 }
1662 if (account.setJid(assignedJid)) {
1663 Log.d(
1664 Config.LOGTAG,
1665 account.getJid().asBareJid()
1666 + ": jid changed during bind. updating database");
1667 mXmppConnectionService.databaseBackend.updateAccount(account);
1668 }
1669 if (streamFeatures.hasChild("session")
1670 && !streamFeatures
1671 .findChild("session")
1672 .hasChild("optional")) {
1673 sendStartSession();
1674 } else {
1675 final boolean waitForDisco = enableStreamManagement();
1676 sendPostBindInitialization(waitForDisco, false);
1677 }
1678 return;
1679 } catch (final IllegalArgumentException e) {
1680 Log.d(
1681 Config.LOGTAG,
1682 account.getJid().asBareJid()
1683 + ": server reported invalid jid ("
1684 + jid.getContent()
1685 + ") on bind");
1686 }
1687 } else {
1688 Log.d(
1689 Config.LOGTAG,
1690 account.getJid()
1691 + ": disconnecting because of bind failure. (no jid)");
1692 }
1693 } else {
1694 Log.d(
1695 Config.LOGTAG,
1696 account.getJid()
1697 + ": disconnecting because of bind failure ("
1698 + packet);
1699 }
1700 final Element error = packet.findChild("error");
1701 if (packet.getType() == IqPacket.TYPE.ERROR
1702 && error != null
1703 && error.hasChild("conflict")) {
1704 account.setResource(createNewResource());
1705 }
1706 throw new StateChangingError(Account.State.BIND_FAILURE);
1707 },
1708 true);
1709 }
1710
1711 private void clearIqCallbacks() {
1712 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1713 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1714 synchronized (this.packetCallbacks) {
1715 if (this.packetCallbacks.size() == 0) {
1716 return;
1717 }
1718 Log.d(
1719 Config.LOGTAG,
1720 account.getJid().asBareJid()
1721 + ": clearing "
1722 + this.packetCallbacks.size()
1723 + " iq callbacks");
1724 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator =
1725 this.packetCallbacks.values().iterator();
1726 while (iterator.hasNext()) {
1727 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1728 callbacks.add(entry.second);
1729 iterator.remove();
1730 }
1731 }
1732 for (OnIqPacketReceived callback : callbacks) {
1733 try {
1734 callback.onIqPacketReceived(account, failurePacket);
1735 } catch (StateChangingError error) {
1736 Log.d(
1737 Config.LOGTAG,
1738 account.getJid().asBareJid()
1739 + ": caught StateChangingError("
1740 + error.state.toString()
1741 + ") while clearing callbacks");
1742 // ignore
1743 }
1744 }
1745 Log.d(
1746 Config.LOGTAG,
1747 account.getJid().asBareJid()
1748 + ": done clearing iq callbacks. "
1749 + this.packetCallbacks.size()
1750 + " left");
1751 }
1752
1753 public void sendDiscoTimeout() {
1754 if (mWaitForDisco.compareAndSet(true, false)) {
1755 Log.d(
1756 Config.LOGTAG,
1757 account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1758 finalizeBind();
1759 }
1760 }
1761
1762 private void sendStartSession() {
1763 Log.d(
1764 Config.LOGTAG,
1765 account.getJid().asBareJid() + ": sending legacy session to outdated server");
1766 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1767 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1768 this.sendUnmodifiedIqPacket(
1769 startSession,
1770 (account, packet) -> {
1771 if (packet.getType() == IqPacket.TYPE.RESULT) {
1772 final boolean waitForDisco = enableStreamManagement();
1773 sendPostBindInitialization(waitForDisco, false);
1774 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1775 throw new StateChangingError(Account.State.SESSION_FAILURE);
1776 }
1777 },
1778 true);
1779 }
1780
1781 private boolean enableStreamManagement() {
1782 final boolean streamManagement =
1783 this.streamFeatures.hasChild("sm", Namespace.STREAM_MANAGEMENT);
1784 if (streamManagement) {
1785 synchronized (this.mStanzaQueue) {
1786 final EnablePacket enable = new EnablePacket();
1787 tagWriter.writeStanzaAsync(enable);
1788 stanzasSent = 0;
1789 mStanzaQueue.clear();
1790 }
1791 return true;
1792 } else {
1793 return false;
1794 }
1795 }
1796
1797 private void sendPostBindInitialization(
1798 final boolean waitForDisco, final boolean carbonsEnabled) {
1799 features.carbonsEnabled = carbonsEnabled;
1800 features.blockListRequested = false;
1801 synchronized (this.disco) {
1802 this.disco.clear();
1803 }
1804 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1805 mPendingServiceDiscoveries.set(0);
1806 if (!waitForDisco
1807 || Patches.DISCO_EXCEPTIONS.contains(
1808 account.getJid().getDomain().toEscapedString())) {
1809 Log.d(
1810 Config.LOGTAG,
1811 account.getJid().asBareJid() + ": do not wait for service discovery");
1812 mWaitForDisco.set(false);
1813 } else {
1814 mWaitForDisco.set(true);
1815 }
1816 lastDiscoStarted = SystemClock.elapsedRealtime();
1817 mXmppConnectionService.scheduleWakeUpCall(
1818 Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1819 final Element caps = streamFeatures.findChild("c");
1820 final String hash = caps == null ? null : caps.getAttribute("hash");
1821 final String ver = caps == null ? null : caps.getAttribute("ver");
1822 ServiceDiscoveryResult discoveryResult = null;
1823 if (hash != null && ver != null) {
1824 discoveryResult =
1825 mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1826 }
1827 final boolean requestDiscoItemsFirst =
1828 !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1829 if (requestDiscoItemsFirst) {
1830 sendServiceDiscoveryItems(account.getDomain());
1831 }
1832 if (discoveryResult == null) {
1833 sendServiceDiscoveryInfo(account.getDomain());
1834 } else {
1835 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1836 disco.put(account.getDomain(), discoveryResult);
1837 }
1838 discoverMamPreferences();
1839 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1840 if (!requestDiscoItemsFirst) {
1841 sendServiceDiscoveryItems(account.getDomain());
1842 }
1843
1844 if (!mWaitForDisco.get()) {
1845 finalizeBind();
1846 }
1847 this.lastSessionStarted = SystemClock.elapsedRealtime();
1848 }
1849
1850 private void sendServiceDiscoveryInfo(final Jid jid) {
1851 mPendingServiceDiscoveries.incrementAndGet();
1852 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1853 iq.setTo(jid);
1854 iq.query("http://jabber.org/protocol/disco#info");
1855 this.sendIqPacket(
1856 iq,
1857 (account, packet) -> {
1858 if (packet.getType() == IqPacket.TYPE.RESULT) {
1859 boolean advancedStreamFeaturesLoaded;
1860 synchronized (XmppConnection.this.disco) {
1861 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1862 if (jid.equals(account.getDomain())) {
1863 mXmppConnectionService.databaseBackend.insertDiscoveryResult(
1864 result);
1865 }
1866 disco.put(jid, result);
1867 advancedStreamFeaturesLoaded =
1868 disco.containsKey(account.getDomain())
1869 && disco.containsKey(account.getJid().asBareJid());
1870 }
1871 if (advancedStreamFeaturesLoaded
1872 && (jid.equals(account.getDomain())
1873 || jid.equals(account.getJid().asBareJid()))) {
1874 enableAdvancedStreamFeatures();
1875 }
1876 } else if (packet.getType() == IqPacket.TYPE.ERROR) {
1877 Log.d(
1878 Config.LOGTAG,
1879 account.getJid().asBareJid()
1880 + ": could not query disco info for "
1881 + jid.toString());
1882 final boolean serverOrAccount =
1883 jid.equals(account.getDomain())
1884 || jid.equals(account.getJid().asBareJid());
1885 final boolean advancedStreamFeaturesLoaded;
1886 if (serverOrAccount) {
1887 synchronized (XmppConnection.this.disco) {
1888 disco.put(jid, ServiceDiscoveryResult.empty());
1889 advancedStreamFeaturesLoaded =
1890 disco.containsKey(account.getDomain())
1891 && disco.containsKey(account.getJid().asBareJid());
1892 }
1893 } else {
1894 advancedStreamFeaturesLoaded = false;
1895 }
1896 if (advancedStreamFeaturesLoaded) {
1897 enableAdvancedStreamFeatures();
1898 }
1899 }
1900 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1901 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1902 && mWaitForDisco.compareAndSet(true, false)) {
1903 finalizeBind();
1904 }
1905 }
1906 });
1907 }
1908
1909 private void discoverMamPreferences() {
1910 IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1911 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1912 sendIqPacket(
1913 request,
1914 (account, response) -> {
1915 if (response.getType() == IqPacket.TYPE.RESULT) {
1916 Element prefs =
1917 response.findChild(
1918 "prefs", MessageArchiveService.Version.MAM_2.namespace);
1919 isMamPreferenceAlways =
1920 "always"
1921 .equals(
1922 prefs == null
1923 ? null
1924 : prefs.getAttribute("default"));
1925 }
1926 });
1927 }
1928
1929 private void discoverCommands() {
1930 final IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1931 request.setTo(account.getDomain());
1932 request.addChild("query", Namespace.DISCO_ITEMS).setAttribute("node", Namespace.COMMANDS);
1933 sendIqPacket(
1934 request,
1935 (account, response) -> {
1936 if (response.getType() == IqPacket.TYPE.RESULT) {
1937 final Element query = response.findChild("query", Namespace.DISCO_ITEMS);
1938 if (query == null) {
1939 return;
1940 }
1941 final HashMap<String, Jid> commands = new HashMap<>();
1942 for (final Element child : query.getChildren()) {
1943 if ("item".equals(child.getName())) {
1944 final String node = child.getAttribute("node");
1945 final Jid jid = child.getAttributeAsJid("jid");
1946 if (node != null && jid != null) {
1947 commands.put(node, jid);
1948 }
1949 }
1950 }
1951 synchronized (this.commands) {
1952 this.commands.clear();
1953 this.commands.putAll(commands);
1954 }
1955 }
1956 });
1957 }
1958
1959 public boolean isMamPreferenceAlways() {
1960 return isMamPreferenceAlways;
1961 }
1962
1963 private void finalizeBind() {
1964 if (bindListener != null) {
1965 bindListener.onBind(account);
1966 }
1967 changeStatusToOnline();
1968 }
1969
1970 private void enableAdvancedStreamFeatures() {
1971 if (getFeatures().blocking() && !features.blockListRequested) {
1972 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
1973 this.sendIqPacket(
1974 getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1975 }
1976 for (final OnAdvancedStreamFeaturesLoaded listener :
1977 advancedStreamFeaturesLoadedListeners) {
1978 listener.onAdvancedStreamFeaturesAvailable(account);
1979 }
1980 if (getFeatures().carbons() && !features.carbonsEnabled) {
1981 sendEnableCarbons();
1982 }
1983 if (getFeatures().commands()) {
1984 discoverCommands();
1985 }
1986 }
1987
1988 private void sendServiceDiscoveryItems(final Jid server) {
1989 mPendingServiceDiscoveries.incrementAndGet();
1990 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1991 iq.setTo(server.getDomain());
1992 iq.query("http://jabber.org/protocol/disco#items");
1993 this.sendIqPacket(
1994 iq,
1995 (account, packet) -> {
1996 if (packet.getType() == IqPacket.TYPE.RESULT) {
1997 final HashSet<Jid> items = new HashSet<>();
1998 final List<Element> elements = packet.query().getChildren();
1999 for (final Element element : elements) {
2000 if (element.getName().equals("item")) {
2001 final Jid jid =
2002 InvalidJid.getNullForInvalid(
2003 element.getAttributeAsJid("jid"));
2004 if (jid != null && !jid.equals(account.getDomain())) {
2005 items.add(jid);
2006 }
2007 }
2008 }
2009 for (Jid jid : items) {
2010 sendServiceDiscoveryInfo(jid);
2011 }
2012 } else {
2013 Log.d(
2014 Config.LOGTAG,
2015 account.getJid().asBareJid()
2016 + ": could not query disco items of "
2017 + server);
2018 }
2019 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
2020 if (mPendingServiceDiscoveries.decrementAndGet() == 0
2021 && mWaitForDisco.compareAndSet(true, false)) {
2022 finalizeBind();
2023 }
2024 }
2025 });
2026 }
2027
2028 private void sendEnableCarbons() {
2029 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
2030 iq.addChild("enable", Namespace.CARBONS);
2031 this.sendIqPacket(
2032 iq,
2033 (account, packet) -> {
2034 if (packet.getType() == IqPacket.TYPE.RESULT) {
2035 Log.d(
2036 Config.LOGTAG,
2037 account.getJid().asBareJid() + ": successfully enabled carbons");
2038 features.carbonsEnabled = true;
2039 } else {
2040 Log.d(
2041 Config.LOGTAG,
2042 account.getJid().asBareJid()
2043 + ": could not enable carbons "
2044 + packet);
2045 }
2046 });
2047 }
2048
2049 private void processStreamError(final Tag currentTag) throws IOException {
2050 final Element streamError = tagReader.readElement(currentTag);
2051 if (streamError == null) {
2052 return;
2053 }
2054 if (streamError.hasChild("conflict")) {
2055 account.setResource(createNewResource());
2056 Log.d(
2057 Config.LOGTAG,
2058 account.getJid().asBareJid()
2059 + ": switching resource due to conflict ("
2060 + account.getResource()
2061 + ")");
2062 throw new IOException();
2063 } else if (streamError.hasChild("host-unknown")) {
2064 throw new StateChangingException(Account.State.HOST_UNKNOWN);
2065 } else if (streamError.hasChild("policy-violation")) {
2066 this.lastConnect = SystemClock.elapsedRealtime();
2067 final String text = streamError.findChildContent("text");
2068 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": policy violation. " + text);
2069 failPendingMessages(text);
2070 throw new StateChangingException(Account.State.POLICY_VIOLATION);
2071 } else {
2072 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError);
2073 throw new StateChangingException(Account.State.STREAM_ERROR);
2074 }
2075 }
2076
2077 private void failPendingMessages(final String error) {
2078 synchronized (this.mStanzaQueue) {
2079 for (int i = 0; i < mStanzaQueue.size(); ++i) {
2080 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
2081 if (stanza instanceof MessagePacket) {
2082 final MessagePacket packet = (MessagePacket) stanza;
2083 final String id = packet.getId();
2084 final Jid to = packet.getTo();
2085 mXmppConnectionService.markMessage(
2086 account, to.asBareJid(), id, Message.STATUS_SEND_FAILED, error);
2087 }
2088 }
2089 }
2090 }
2091
2092 private boolean establishStream(final SSLSockets.Version sslVersion)
2093 throws IOException, InterruptedException {
2094 final SaslMechanism quickStartMechanism =
2095 SaslMechanism.ensureAvailable(account.getQuickStartMechanism(), sslVersion);
2096 final boolean secureConnection = sslVersion != SSLSockets.Version.NONE;
2097 if (secureConnection
2098 && Config.QUICKSTART_ENABLED
2099 && quickStartMechanism != null
2100 && account.isOptionSet(Account.OPTION_QUICKSTART_AVAILABLE)) {
2101 mXmppConnectionService.restoredFromDatabaseLatch.await();
2102 this.saslMechanism = quickStartMechanism;
2103 final boolean usingFast = quickStartMechanism instanceof HashedToken;
2104 final Element authenticate =
2105 generateAuthenticationRequest(quickStartMechanism.getClientFirstMessage(sslSocketOrNull(this.socket)), usingFast);
2106 authenticate.setAttribute("mechanism", quickStartMechanism.getMechanism());
2107 sendStartStream(true, false);
2108 tagWriter.writeElement(authenticate);
2109 Log.d(
2110 Config.LOGTAG,
2111 account.getJid().toString()
2112 + ": quick start with "
2113 + quickStartMechanism.getMechanism());
2114 return true;
2115 } else {
2116 sendStartStream(secureConnection, true);
2117 return false;
2118 }
2119 }
2120
2121 private void sendStartStream(final boolean from, final boolean flush) throws IOException {
2122 final Tag stream = Tag.start("stream:stream");
2123 stream.setAttribute("to", account.getServer());
2124 if (from) {
2125 stream.setAttribute("from", account.getJid().asBareJid().toEscapedString());
2126 }
2127 stream.setAttribute("version", "1.0");
2128 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
2129 stream.setAttribute("xmlns", "jabber:client");
2130 stream.setAttribute("xmlns:stream", Namespace.STREAMS);
2131 tagWriter.writeTag(stream, flush);
2132 }
2133
2134 private String createNewResource() {
2135 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
2136 }
2137
2138 private String nextRandomId() {
2139 return nextRandomId(false);
2140 }
2141
2142 private String nextRandomId(final boolean s) {
2143 return CryptoHelper.random(s ? 3 : 9);
2144 }
2145
2146 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
2147 packet.setFrom(account.getJid());
2148 return this.sendUnmodifiedIqPacket(packet, callback, false);
2149 }
2150
2151 public synchronized String sendUnmodifiedIqPacket(
2152 final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
2153 if (packet.getId() == null) {
2154 packet.setAttribute("id", nextRandomId());
2155 }
2156 if (callback != null) {
2157 synchronized (this.packetCallbacks) {
2158 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
2159 }
2160 }
2161 this.sendPacket(packet, force);
2162 return packet.getId();
2163 }
2164
2165 public void sendMessagePacket(final MessagePacket packet) {
2166 this.sendPacket(packet);
2167 }
2168
2169 public void sendPresencePacket(final PresencePacket packet) {
2170 this.sendPacket(packet);
2171 }
2172
2173 private synchronized void sendPacket(final AbstractStanza packet) {
2174 sendPacket(packet, false);
2175 }
2176
2177 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
2178 if (stanzasSent == Integer.MAX_VALUE) {
2179 resetStreamId();
2180 disconnect(true);
2181 return;
2182 }
2183 synchronized (this.mStanzaQueue) {
2184 if (force || isBound) {
2185 tagWriter.writeStanzaAsync(packet);
2186 } else {
2187 Log.d(
2188 Config.LOGTAG,
2189 account.getJid().asBareJid()
2190 + " do not write stanza to unbound stream "
2191 + packet.toString());
2192 }
2193 if (packet instanceof AbstractAcknowledgeableStanza) {
2194 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
2195
2196 if (this.mStanzaQueue.size() != 0) {
2197 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
2198 if (currentHighestKey != stanzasSent) {
2199 throw new AssertionError("Stanza count messed up");
2200 }
2201 }
2202
2203 ++stanzasSent;
2204 this.mStanzaQueue.append(stanzasSent, stanza);
2205 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
2206 if (Config.EXTENDED_SM_LOGGING) {
2207 Log.d(
2208 Config.LOGTAG,
2209 account.getJid().asBareJid()
2210 + ": requesting ack for message stanza #"
2211 + stanzasSent);
2212 }
2213 tagWriter.writeStanzaAsync(new RequestPacket());
2214 }
2215 }
2216 }
2217 }
2218
2219 public void sendPing() {
2220 if (!r()) {
2221 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
2222 iq.setFrom(account.getJid());
2223 iq.addChild("ping", Namespace.PING);
2224 this.sendIqPacket(iq, null);
2225 }
2226 this.lastPingSent = SystemClock.elapsedRealtime();
2227 }
2228
2229 public void setOnMessagePacketReceivedListener(final OnMessagePacketReceived listener) {
2230 this.messageListener = listener;
2231 }
2232
2233 public void setOnUnregisteredIqPacketReceivedListener(final OnIqPacketReceived listener) {
2234 this.unregisteredIqListener = listener;
2235 }
2236
2237 public void setOnPresencePacketReceivedListener(final OnPresencePacketReceived listener) {
2238 this.presenceListener = listener;
2239 }
2240
2241 public void setOnJinglePacketReceivedListener(final OnJinglePacketReceived listener) {
2242 this.jingleListener = listener;
2243 }
2244
2245 public void setOnStatusChangedListener(final OnStatusChanged listener) {
2246 this.statusListener = listener;
2247 }
2248
2249 public void setOnBindListener(final OnBindListener listener) {
2250 this.bindListener = listener;
2251 }
2252
2253 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
2254 this.acknowledgedListener = listener;
2255 }
2256
2257 public void addOnAdvancedStreamFeaturesAvailableListener(
2258 final OnAdvancedStreamFeaturesLoaded listener) {
2259 this.advancedStreamFeaturesLoadedListeners.add(listener);
2260 }
2261
2262 private void forceCloseSocket() {
2263 FileBackend.close(this.socket);
2264 FileBackend.close(this.tagReader);
2265 }
2266
2267 public void interrupt() {
2268 if (this.mThread != null) {
2269 this.mThread.interrupt();
2270 }
2271 }
2272
2273 public void disconnect(final boolean force) {
2274 interrupt();
2275 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
2276 if (force) {
2277 forceCloseSocket();
2278 } else {
2279 final TagWriter currentTagWriter = this.tagWriter;
2280 if (currentTagWriter.isActive()) {
2281 currentTagWriter.finish();
2282 final Socket currentSocket = this.socket;
2283 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
2284 try {
2285 currentTagWriter.await(1, TimeUnit.SECONDS);
2286 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
2287 currentTagWriter.writeTag(Tag.end("stream:stream"));
2288 if (streamCountDownLatch != null) {
2289 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
2290 Log.d(
2291 Config.LOGTAG,
2292 account.getJid().asBareJid() + ": remote ended stream");
2293 } else {
2294 Log.d(
2295 Config.LOGTAG,
2296 account.getJid().asBareJid()
2297 + ": remote has not closed socket. force closing");
2298 }
2299 }
2300 } catch (InterruptedException e) {
2301 Log.d(
2302 Config.LOGTAG,
2303 account.getJid().asBareJid()
2304 + ": interrupted while gracefully closing stream");
2305 } catch (final IOException e) {
2306 Log.d(
2307 Config.LOGTAG,
2308 account.getJid().asBareJid()
2309 + ": io exception during disconnect ("
2310 + e.getMessage()
2311 + ")");
2312 } finally {
2313 FileBackend.close(currentSocket);
2314 }
2315 } else {
2316 forceCloseSocket();
2317 }
2318 }
2319 }
2320
2321 private void resetStreamId() {
2322 this.streamId = null;
2323 }
2324
2325 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
2326 synchronized (this.disco) {
2327 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
2328 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
2329 if (cursor.getValue().getFeatures().contains(feature)) {
2330 items.add(cursor);
2331 }
2332 }
2333 return items;
2334 }
2335 }
2336
2337 public Jid findDiscoItemByFeature(final String feature) {
2338 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
2339 if (items.size() >= 1) {
2340 return items.get(0).getKey();
2341 }
2342 return null;
2343 }
2344
2345 public boolean r() {
2346 if (getFeatures().sm()) {
2347 this.tagWriter.writeStanzaAsync(new RequestPacket());
2348 return true;
2349 } else {
2350 return false;
2351 }
2352 }
2353
2354 public List<String> getMucServersWithholdAccount() {
2355 final List<String> servers = getMucServers();
2356 servers.remove(account.getDomain().toEscapedString());
2357 return servers;
2358 }
2359
2360 public List<String> getMucServers() {
2361 List<String> servers = new ArrayList<>();
2362 synchronized (this.disco) {
2363 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
2364 final ServiceDiscoveryResult value = cursor.getValue();
2365 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
2366 && value.hasIdentity("conference", "text")
2367 && !value.getFeatures().contains("jabber:iq:gateway")
2368 && !value.hasIdentity("conference", "irc")) {
2369 servers.add(cursor.getKey().toString());
2370 }
2371 }
2372 }
2373 return servers;
2374 }
2375
2376 public String getMucServer() {
2377 List<String> servers = getMucServers();
2378 return servers.size() > 0 ? servers.get(0) : null;
2379 }
2380
2381 public int getTimeToNextAttempt() {
2382 final int additionalTime =
2383 account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
2384 final int interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
2385 final int secondsSinceLast =
2386 (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
2387 return interval - secondsSinceLast;
2388 }
2389
2390 public int getAttempt() {
2391 return this.attempt;
2392 }
2393
2394 public Features getFeatures() {
2395 return this.features;
2396 }
2397
2398 public long getLastSessionEstablished() {
2399 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
2400 return System.currentTimeMillis() - diff;
2401 }
2402
2403 public long getLastConnect() {
2404 return this.lastConnect;
2405 }
2406
2407 public long getLastPingSent() {
2408 return this.lastPingSent;
2409 }
2410
2411 public long getLastDiscoStarted() {
2412 return this.lastDiscoStarted;
2413 }
2414
2415 public long getLastPacketReceived() {
2416 return this.lastPacketReceived;
2417 }
2418
2419 public void sendActive() {
2420 this.sendPacket(new ActivePacket());
2421 }
2422
2423 public void sendInactive() {
2424 this.sendPacket(new InactivePacket());
2425 }
2426
2427 public void resetAttemptCount(boolean resetConnectTime) {
2428 this.attempt = 0;
2429 if (resetConnectTime) {
2430 this.lastConnect = 0;
2431 }
2432 }
2433
2434 public void setInteractive(boolean interactive) {
2435 this.mInteractive = interactive;
2436 }
2437
2438 public Identity getServerIdentity() {
2439 synchronized (this.disco) {
2440 ServiceDiscoveryResult result = disco.get(account.getJid().getDomain());
2441 if (result == null) {
2442 return Identity.UNKNOWN;
2443 }
2444 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
2445 if (id.getType().equals("im")
2446 && id.getCategory().equals("server")
2447 && id.getName() != null) {
2448 switch (id.getName()) {
2449 case "Prosody":
2450 return Identity.PROSODY;
2451 case "ejabberd":
2452 return Identity.EJABBERD;
2453 case "Slack-XMPP":
2454 return Identity.SLACK;
2455 }
2456 }
2457 }
2458 }
2459 return Identity.UNKNOWN;
2460 }
2461
2462 private IqGenerator getIqGenerator() {
2463 return mXmppConnectionService.getIqGenerator();
2464 }
2465
2466 public enum Identity {
2467 FACEBOOK,
2468 SLACK,
2469 EJABBERD,
2470 PROSODY,
2471 NIMBUZZ,
2472 UNKNOWN
2473 }
2474
2475 private class MyKeyManager implements X509KeyManager {
2476 @Override
2477 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
2478 return account.getPrivateKeyAlias();
2479 }
2480
2481 @Override
2482 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
2483 return null;
2484 }
2485
2486 @Override
2487 public X509Certificate[] getCertificateChain(String alias) {
2488 Log.d(Config.LOGTAG, "getting certificate chain");
2489 try {
2490 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
2491 } catch (final Exception e) {
2492 Log.d(Config.LOGTAG, "could not get certificate chain", e);
2493 return new X509Certificate[0];
2494 }
2495 }
2496
2497 @Override
2498 public String[] getClientAliases(String s, Principal[] principals) {
2499 final String alias = account.getPrivateKeyAlias();
2500 return alias != null ? new String[] {alias} : new String[0];
2501 }
2502
2503 @Override
2504 public String[] getServerAliases(String s, Principal[] principals) {
2505 return new String[0];
2506 }
2507
2508 @Override
2509 public PrivateKey getPrivateKey(String alias) {
2510 try {
2511 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
2512 } catch (Exception e) {
2513 return null;
2514 }
2515 }
2516 }
2517
2518 private static class StateChangingError extends Error {
2519 private final Account.State state;
2520
2521 public StateChangingError(Account.State state) {
2522 this.state = state;
2523 }
2524 }
2525
2526 private static class StateChangingException extends IOException {
2527 private final Account.State state;
2528
2529 public StateChangingException(Account.State state) {
2530 this.state = state;
2531 }
2532 }
2533
2534 public class Features {
2535 XmppConnection connection;
2536 private boolean carbonsEnabled = false;
2537 private boolean encryptionEnabled = false;
2538 private boolean blockListRequested = false;
2539
2540 public Features(final XmppConnection connection) {
2541 this.connection = connection;
2542 }
2543
2544 private boolean hasDiscoFeature(final Jid server, final String feature) {
2545 synchronized (XmppConnection.this.disco) {
2546 final ServiceDiscoveryResult sdr = connection.disco.get(server);
2547 return sdr != null && sdr.getFeatures().contains(feature);
2548 }
2549 }
2550
2551 public boolean carbons() {
2552 return hasDiscoFeature(account.getDomain(), Namespace.CARBONS);
2553 }
2554
2555 public boolean commands() {
2556 return hasDiscoFeature(account.getDomain(), Namespace.COMMANDS);
2557 }
2558
2559 public boolean easyOnboardingInvites() {
2560 synchronized (commands) {
2561 return commands.containsKey(Namespace.EASY_ONBOARDING_INVITE);
2562 }
2563 }
2564
2565 public boolean bookmarksConversion() {
2566 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION)
2567 && pepPublishOptions();
2568 }
2569
2570 public boolean avatarConversion() {
2571 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.AVATAR_CONVERSION)
2572 && pepPublishOptions();
2573 }
2574
2575 public boolean blocking() {
2576 return hasDiscoFeature(account.getDomain(), Namespace.BLOCKING);
2577 }
2578
2579 public boolean spamReporting() {
2580 return hasDiscoFeature(account.getDomain(), "urn:xmpp:reporting:reason:spam:0");
2581 }
2582
2583 public boolean flexibleOfflineMessageRetrieval() {
2584 return hasDiscoFeature(
2585 account.getDomain(), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
2586 }
2587
2588 public boolean register() {
2589 return hasDiscoFeature(account.getDomain(), Namespace.REGISTER);
2590 }
2591
2592 public boolean invite() {
2593 return connection.streamFeatures != null
2594 && connection.streamFeatures.hasChild("register", Namespace.INVITE);
2595 }
2596
2597 public boolean sm() {
2598 return streamId != null
2599 || (connection.streamFeatures != null
2600 && connection.streamFeatures.hasChild("sm"));
2601 }
2602
2603 public boolean csi() {
2604 return connection.streamFeatures != null
2605 && connection.streamFeatures.hasChild("csi", Namespace.CSI);
2606 }
2607
2608 public boolean pep() {
2609 synchronized (XmppConnection.this.disco) {
2610 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
2611 return info != null && info.hasIdentity("pubsub", "pep");
2612 }
2613 }
2614
2615 public boolean pepPersistent() {
2616 synchronized (XmppConnection.this.disco) {
2617 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
2618 return info != null
2619 && info.getFeatures()
2620 .contains("http://jabber.org/protocol/pubsub#persistent-items");
2621 }
2622 }
2623
2624 public boolean pepPublishOptions() {
2625 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
2626 }
2627
2628 public boolean pepOmemoWhitelisted() {
2629 return hasDiscoFeature(
2630 account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
2631 }
2632
2633 public boolean mam() {
2634 return MessageArchiveService.Version.has(getAccountFeatures());
2635 }
2636
2637 public List<String> getAccountFeatures() {
2638 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
2639 return result == null ? Collections.emptyList() : result.getFeatures();
2640 }
2641
2642 public boolean push() {
2643 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
2644 || hasDiscoFeature(account.getDomain(), Namespace.PUSH);
2645 }
2646
2647 public boolean rosterVersioning() {
2648 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
2649 }
2650
2651 public void setBlockListRequested(boolean value) {
2652 this.blockListRequested = value;
2653 }
2654
2655 public boolean httpUpload(long filesize) {
2656 if (Config.DISABLE_HTTP_UPLOAD) {
2657 return false;
2658 } else {
2659 for (String namespace :
2660 new String[] {Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
2661 List<Entry<Jid, ServiceDiscoveryResult>> items =
2662 findDiscoItemsByFeature(namespace);
2663 if (items.size() > 0) {
2664 try {
2665 long maxsize =
2666 Long.parseLong(
2667 items.get(0)
2668 .getValue()
2669 .getExtendedDiscoInformation(
2670 namespace, "max-file-size"));
2671 if (filesize <= maxsize) {
2672 return true;
2673 } else {
2674 Log.d(
2675 Config.LOGTAG,
2676 account.getJid().asBareJid()
2677 + ": http upload is not available for files with size "
2678 + filesize
2679 + " (max is "
2680 + maxsize
2681 + ")");
2682 return false;
2683 }
2684 } catch (Exception e) {
2685 return true;
2686 }
2687 }
2688 }
2689 return false;
2690 }
2691 }
2692
2693 public boolean useLegacyHttpUpload() {
2694 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null
2695 && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
2696 }
2697
2698 public long getMaxHttpUploadSize() {
2699 for (String namespace :
2700 new String[] {Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
2701 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
2702 if (items.size() > 0) {
2703 try {
2704 return Long.parseLong(
2705 items.get(0)
2706 .getValue()
2707 .getExtendedDiscoInformation(namespace, "max-file-size"));
2708 } catch (Exception e) {
2709 // ignored
2710 }
2711 }
2712 }
2713 return -1;
2714 }
2715
2716 public boolean stanzaIds() {
2717 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
2718 }
2719
2720 public boolean bookmarks2() {
2721 return Config
2722 .USE_BOOKMARKS2 /* || hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS2_COMPAT)*/;
2723 }
2724
2725 public boolean externalServiceDiscovery() {
2726 return hasDiscoFeature(account.getDomain(), Namespace.EXTERNAL_SERVICE_DISCOVERY);
2727 }
2728 }
2729}