1package eu.siacs.conversations.xmpp;
2
3import android.graphics.Bitmap;
4import android.graphics.BitmapFactory;
5import android.os.PowerManager;
6import android.os.PowerManager.WakeLock;
7import android.os.SystemClock;
8import android.security.KeyChain;
9import android.util.Base64;
10import android.util.Log;
11import android.util.Pair;
12import android.util.SparseArray;
13
14import org.xmlpull.v1.XmlPullParserException;
15
16import java.io.ByteArrayInputStream;
17import java.io.IOException;
18import java.io.InputStream;
19import java.net.ConnectException;
20import java.net.IDN;
21import java.net.InetAddress;
22import java.net.InetSocketAddress;
23import java.net.Socket;
24import java.net.URL;
25import java.net.UnknownHostException;
26import java.security.KeyManagementException;
27import java.security.NoSuchAlgorithmException;
28import java.security.Principal;
29import java.security.PrivateKey;
30import java.security.cert.X509Certificate;
31import java.util.ArrayList;
32import java.util.Arrays;
33import java.util.HashMap;
34import java.util.HashSet;
35import java.util.Hashtable;
36import java.util.Iterator;
37import java.util.List;
38import java.util.Map.Entry;
39import java.util.concurrent.atomic.AtomicBoolean;
40import java.util.concurrent.atomic.AtomicInteger;
41import java.util.regex.Matcher;
42
43import javax.net.ssl.KeyManager;
44import javax.net.ssl.SSLContext;
45import javax.net.ssl.SSLSession;
46import javax.net.ssl.SSLSocket;
47import javax.net.ssl.SSLSocketFactory;
48import javax.net.ssl.X509KeyManager;
49import javax.net.ssl.X509TrustManager;
50
51import de.duenndns.ssl.DomainHostnameVerifier;
52import de.duenndns.ssl.MemorizingTrustManager;
53import eu.siacs.conversations.Config;
54import eu.siacs.conversations.crypto.XmppDomainVerifier;
55import eu.siacs.conversations.crypto.sasl.Anonymous;
56import eu.siacs.conversations.crypto.sasl.DigestMd5;
57import eu.siacs.conversations.crypto.sasl.External;
58import eu.siacs.conversations.crypto.sasl.Plain;
59import eu.siacs.conversations.crypto.sasl.SaslMechanism;
60import eu.siacs.conversations.crypto.sasl.ScramSha1;
61import eu.siacs.conversations.crypto.sasl.ScramSha256;
62import eu.siacs.conversations.entities.Account;
63import eu.siacs.conversations.entities.Message;
64import eu.siacs.conversations.entities.ServiceDiscoveryResult;
65import eu.siacs.conversations.generator.IqGenerator;
66import eu.siacs.conversations.persistance.FileBackend;
67import eu.siacs.conversations.services.NotificationService;
68import eu.siacs.conversations.services.XmppConnectionService;
69import eu.siacs.conversations.utils.CryptoHelper;
70import eu.siacs.conversations.utils.IP;
71import eu.siacs.conversations.utils.Patterns;
72import eu.siacs.conversations.utils.Resolver;
73import eu.siacs.conversations.utils.SSLSocketHelper;
74import eu.siacs.conversations.utils.SocksSocketFactory;
75import eu.siacs.conversations.xml.Element;
76import eu.siacs.conversations.xml.Tag;
77import eu.siacs.conversations.xml.TagWriter;
78import eu.siacs.conversations.xml.XmlReader;
79import eu.siacs.conversations.xml.Namespace;
80import eu.siacs.conversations.xmpp.forms.Data;
81import eu.siacs.conversations.xmpp.forms.Field;
82import eu.siacs.conversations.xmpp.jid.InvalidJidException;
83import eu.siacs.conversations.xmpp.jid.Jid;
84import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
85import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
86import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
87import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
88import eu.siacs.conversations.xmpp.stanzas.IqPacket;
89import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
90import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
91import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
92import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
93import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
94import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
95import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
96import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
97
98public class XmppConnection implements Runnable {
99
100 private static final int PACKET_IQ = 0;
101 private static final int PACKET_MESSAGE = 1;
102 private static final int PACKET_PRESENCE = 2;
103 protected final Account account;
104 private final WakeLock wakeLock;
105 private Socket socket;
106 private XmlReader tagReader;
107 private TagWriter tagWriter = new TagWriter();
108 private final Features features = new Features(this);
109 private boolean needsBinding = true;
110 private boolean shouldAuthenticate = true;
111 private Element streamFeatures;
112 private final HashMap<Jid, ServiceDiscoveryResult> disco = new HashMap<>();
113
114 private String streamId = null;
115 private int smVersion = 3;
116 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
117
118 private int stanzasReceived = 0;
119 private int stanzasSent = 0;
120 private long lastPacketReceived = 0;
121 private long lastPingSent = 0;
122 private long lastConnect = 0;
123 private long lastSessionStarted = 0;
124 private long lastDiscoStarted = 0;
125 private AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
126 private AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
127 private AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
128 private AtomicInteger mSmCatchupMessageCounter = new AtomicInteger(0);
129 private boolean mInteractive = false;
130 private int attempt = 0;
131 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
132 private OnPresencePacketReceived presenceListener = null;
133 private OnJinglePacketReceived jingleListener = null;
134 private OnIqPacketReceived unregisteredIqListener = null;
135 private OnMessagePacketReceived messageListener = null;
136 private OnStatusChanged statusListener = null;
137 private OnBindListener bindListener = null;
138 private final ArrayList<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new ArrayList<>();
139 private OnMessageAcknowledged acknowledgedListener = null;
140 private final XmppConnectionService mXmppConnectionService;
141
142 private SaslMechanism saslMechanism;
143 private String webRegistrationUrl = null;
144 private String verifiedHostname = null;
145
146 private class MyKeyManager implements X509KeyManager {
147 @Override
148 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
149 return account.getPrivateKeyAlias();
150 }
151
152 @Override
153 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
154 return null;
155 }
156
157 @Override
158 public X509Certificate[] getCertificateChain(String alias) {
159 Log.d(Config.LOGTAG, "getting certificate chain");
160 try {
161 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
162 } catch (Exception e) {
163 Log.d(Config.LOGTAG, e.getMessage());
164 return new X509Certificate[0];
165 }
166 }
167
168 @Override
169 public String[] getClientAliases(String s, Principal[] principals) {
170 final String alias = account.getPrivateKeyAlias();
171 return alias != null ? new String[]{alias} : new String[0];
172 }
173
174 @Override
175 public String[] getServerAliases(String s, Principal[] principals) {
176 return new String[0];
177 }
178
179 @Override
180 public PrivateKey getPrivateKey(String alias) {
181 try {
182 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
183 } catch (Exception e) {
184 return null;
185 }
186 }
187 }
188
189 public final OnIqPacketReceived registrationResponseListener = new OnIqPacketReceived() {
190 @Override
191 public void onIqPacketReceived(Account account, IqPacket packet) {
192 if (packet.getType() == IqPacket.TYPE.RESULT) {
193 account.setOption(Account.OPTION_REGISTER, false);
194 forceCloseSocket();
195 changeStatus(Account.State.REGISTRATION_SUCCESSFUL);
196 } else {
197 final List<String> PASSWORD_TOO_WEAK_MSGS = Arrays.asList(
198 "The password is too weak",
199 "Please use a longer password.");
200 Element error = packet.findChild("error");
201 Account.State state = Account.State.REGISTRATION_FAILED;
202 if (error != null) {
203 if (error.hasChild("conflict")) {
204 state = Account.State.REGISTRATION_CONFLICT;
205 } else if (error.hasChild("resource-constraint")
206 && "wait".equals(error.getAttribute("type"))) {
207 state = Account.State.REGISTRATION_PLEASE_WAIT;
208 } else if (error.hasChild("not-acceptable")
209 && PASSWORD_TOO_WEAK_MSGS.contains(error.findChildContent("text"))) {
210 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
211 }
212 }
213 changeStatus(state);
214 forceCloseSocket();
215 }
216 }
217 };
218
219 public XmppConnection(final Account account, final XmppConnectionService service) {
220 this.account = account;
221 this.wakeLock = service.getPowerManager().newWakeLock(
222 PowerManager.PARTIAL_WAKE_LOCK, account.getJid().toBareJid().toString());
223 mXmppConnectionService = service;
224 }
225
226 protected void changeStatus(final Account.State nextStatus) {
227 synchronized (this) {
228 if (Thread.currentThread().isInterrupted()) {
229 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": not changing status to " + nextStatus + " because thread was interrupted");
230 return;
231 }
232 if (account.getStatus() != nextStatus) {
233 if ((nextStatus == Account.State.OFFLINE)
234 && (account.getStatus() != Account.State.CONNECTING)
235 && (account.getStatus() != Account.State.ONLINE)
236 && (account.getStatus() != Account.State.DISABLED)) {
237 return;
238 }
239 if (nextStatus == Account.State.ONLINE) {
240 this.attempt = 0;
241 }
242 account.setStatus(nextStatus);
243 } else {
244 return;
245 }
246 }
247 if (statusListener != null) {
248 statusListener.onStatusChanged(account);
249 }
250 }
251
252 public void prepareNewConnection() {
253 this.lastConnect = SystemClock.elapsedRealtime();
254 this.lastPingSent = SystemClock.elapsedRealtime();
255 this.lastDiscoStarted = Long.MAX_VALUE;
256 this.mWaitingForSmCatchup.set(false);
257 this.changeStatus(Account.State.CONNECTING);
258 }
259
260 public boolean isWaitingForSmCatchup() {
261 return mWaitingForSmCatchup.get();
262 }
263
264 public void incrementSmCatchupMessageCounter() {
265 this.mSmCatchupMessageCounter.incrementAndGet();
266 }
267
268 protected void connect() {
269 if (mXmppConnectionService.areMessagesInitialized()) {
270 mXmppConnectionService.resetSendingToWaiting(account);
271 }
272 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": connecting");
273 features.encryptionEnabled = false;
274 this.attempt++;
275 this.verifiedHostname = null; //will be set if user entered hostname is being used or hostname was verified with dnssec
276 try {
277 Socket localSocket;
278 shouldAuthenticate = needsBinding = !account.isOptionSet(Account.OPTION_REGISTER);
279 this.changeStatus(Account.State.CONNECTING);
280 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
281 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
282 if (useTor) {
283 String destination;
284 if (account.getHostname().isEmpty()) {
285 destination = account.getServer().toString();
286 } else {
287 destination = account.getHostname();
288 this.verifiedHostname = destination;
289 }
290 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": connect to " + destination + " via Tor");
291 localSocket = SocksSocketFactory.createSocketOverTor(destination, account.getPort());
292 try {
293 startXmpp(localSocket);
294 } catch (InterruptedException e) {
295 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": thread was interrupted before beginning stream");
296 return;
297 } catch (Exception e) {
298 throw new IOException(e.getMessage());
299 }
300 } else if (extended && !account.getHostname().isEmpty()) {
301
302 this.verifiedHostname = account.getHostname();
303
304 try {
305 InetSocketAddress address = new InetSocketAddress(this.verifiedHostname, account.getPort());
306 features.encryptionEnabled = address.getPort() == 5223;
307 if (features.encryptionEnabled) {
308 try {
309 final TlsFactoryVerifier tlsFactoryVerifier = getTlsFactoryVerifier();
310 localSocket = tlsFactoryVerifier.factory.createSocket();
311 localSocket.connect(address, Config.SOCKET_TIMEOUT * 1000);
312 final SSLSession session = ((SSLSocket) localSocket).getSession();
313 final String domain = account.getJid().getDomainpart();
314 if (!tlsFactoryVerifier.verifier.verify(domain, this.verifiedHostname, session)) {
315 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": TLS certificate verification failed");
316 throw new StateChangingException(Account.State.TLS_ERROR);
317 }
318 } catch (KeyManagementException e) {
319 throw new StateChangingException(Account.State.TLS_ERROR);
320 }
321 } else {
322 localSocket = new Socket();
323 localSocket.connect(address, Config.SOCKET_TIMEOUT * 1000);
324 }
325 } catch (IOException | IllegalArgumentException e) {
326 throw new UnknownHostException();
327 }
328 try {
329 startXmpp(localSocket);
330 } catch (InterruptedException e) {
331 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": thread was interrupted before beginning stream");
332 return;
333 } catch (Exception e) {
334 throw new IOException(e.getMessage());
335 }
336 } else if (IP.matches(account.getServer().toString())) {
337 localSocket = new Socket();
338 try {
339 localSocket.connect(new InetSocketAddress(account.getServer().toString(), 5222), Config.SOCKET_TIMEOUT * 1000);
340 } catch (IOException e) {
341 throw new UnknownHostException();
342 }
343 try {
344 startXmpp(localSocket);
345 } catch (InterruptedException e) {
346 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": thread was interrupted before beginning stream");
347 return;
348 } catch (Exception e) {
349 throw new IOException(e.getMessage());
350 }
351 } else {
352 List<Resolver.Result> results = Resolver.resolve(account.getJid().getDomainpart());
353 for (Iterator<Resolver.Result> iterator = results.iterator(); iterator.hasNext(); ) {
354 final Resolver.Result result = iterator.next();
355 if (Thread.currentThread().isInterrupted()) {
356 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": Thread was interrupted");
357 return;
358 }
359 try {
360 // if tls is true, encryption is implied and must not be started
361 features.encryptionEnabled = result.isDirectTls();
362 verifiedHostname = result.isAuthenticated() ? result.getHostname().toString() : null;
363 final InetSocketAddress addr;
364 if (result.getIp() != null) {
365 addr = new InetSocketAddress(result.getIp(), result.getPort());
366 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
367 + ": using values from dns " + result.getHostname().toString()
368 + "/" + result.getIp().getHostAddress() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
369 } else {
370 addr = new InetSocketAddress(IDN.toASCII(result.getHostname().toString()), result.getPort());
371 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
372 + ": using values from dns "
373 + result.getHostname().toString() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
374 }
375
376 if (!features.encryptionEnabled) {
377 localSocket = new Socket();
378 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
379 } else {
380 final TlsFactoryVerifier tlsFactoryVerifier = getTlsFactoryVerifier();
381 localSocket = tlsFactoryVerifier.factory.createSocket();
382
383 if (localSocket == null) {
384 throw new IOException("could not initialize ssl socket");
385 }
386
387 SSLSocketHelper.setSecurity((SSLSocket) localSocket);
388 SSLSocketHelper.setSNIHost(tlsFactoryVerifier.factory, (SSLSocket) localSocket, account.getServer().getDomainpart());
389 SSLSocketHelper.setAlpnProtocol(tlsFactoryVerifier.factory, (SSLSocket) localSocket, "xmpp-client");
390
391 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
392
393 if (!tlsFactoryVerifier.verifier.verify(account.getServer().getDomainpart(), verifiedHostname, ((SSLSocket) localSocket).getSession())) {
394 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": TLS certificate verification failed");
395 if (!iterator.hasNext()) {
396 throw new StateChangingException(Account.State.TLS_ERROR);
397 }
398 }
399 }
400 if (startXmpp(localSocket)) {
401 break; // successfully connected to server that speaks xmpp
402 } else {
403 localSocket.close();
404 }
405 } catch (final StateChangingException e) {
406 throw e;
407 } catch (InterruptedException e) {
408 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": thread was interrupted before beginning stream");
409 return;
410 } catch (final Throwable e) {
411 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage() + "(" + e.getClass().getName() + ")");
412 if (!iterator.hasNext()) {
413 throw new UnknownHostException();
414 }
415 }
416 }
417 }
418 processStream();
419 } catch (final SecurityException e) {
420 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
421 } catch (final StateChangingException e) {
422 this.changeStatus(e.state);
423 } catch (final Resolver.NetworkIsUnreachableException e) {
424 this.changeStatus(Account.State.NETWORK_IS_UNREACHABLE);
425 } catch (final UnknownHostException | ConnectException e) {
426 this.changeStatus(Account.State.SERVER_NOT_FOUND);
427 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
428 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
429 } catch (final IOException | XmlPullParserException | NoSuchAlgorithmException e) {
430 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
431 this.changeStatus(Account.State.OFFLINE);
432 this.attempt = Math.max(0, this.attempt - 1);
433 } finally {
434 if (!Thread.currentThread().isInterrupted()) {
435 forceCloseSocket();
436 if (wakeLock.isHeld()) {
437 try {
438 wakeLock.release();
439 } catch (final RuntimeException ignored) {
440 }
441 }
442 } else {
443 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": not force closing socket and releasing wake lock (is held=" + wakeLock.isHeld() + ") because thread was interrupted");
444 }
445 }
446 }
447
448 /**
449 * Starts xmpp protocol, call after connecting to socket
450 *
451 * @return true if server returns with valid xmpp, false otherwise
452 */
453 private boolean startXmpp(Socket socket) throws Exception {
454 if (Thread.currentThread().isInterrupted()) {
455 throw new InterruptedException();
456 }
457 this.socket = socket;
458 tagReader = new XmlReader(wakeLock);
459 if (tagWriter != null) {
460 tagWriter.forceClose();
461 }
462 tagWriter = new TagWriter();
463 tagWriter.setOutputStream(socket.getOutputStream());
464 tagReader.setInputStream(socket.getInputStream());
465 tagWriter.beginDocument();
466 sendStartStream();
467 final Tag tag = tagReader.readTag();
468 return tag != null && tag.isStart("stream");
469 }
470
471 private static class TlsFactoryVerifier {
472 private final SSLSocketFactory factory;
473 private final DomainHostnameVerifier verifier;
474
475 public TlsFactoryVerifier(final SSLSocketFactory factory, final DomainHostnameVerifier verifier) throws IOException {
476 this.factory = factory;
477 this.verifier = verifier;
478 if (factory == null || verifier == null) {
479 throw new IOException("could not setup ssl");
480 }
481 }
482 }
483
484 private TlsFactoryVerifier getTlsFactoryVerifier() throws NoSuchAlgorithmException, KeyManagementException, IOException {
485 final SSLContext sc = SSLSocketHelper.getSSLContext();
486 MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
487 KeyManager[] keyManager;
488 if (account.getPrivateKeyAlias() != null && account.getPassword().isEmpty()) {
489 keyManager = new KeyManager[]{new MyKeyManager()};
490 } else {
491 keyManager = null;
492 }
493 String domain = account.getJid().getDomainpart();
494 sc.init(keyManager, new X509TrustManager[]{mInteractive ? trustManager.getInteractive(domain) : trustManager.getNonInteractive(domain)}, mXmppConnectionService.getRNG());
495 final SSLSocketFactory factory = sc.getSocketFactory();
496 final DomainHostnameVerifier verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier(), mInteractive);
497 return new TlsFactoryVerifier(factory, verifier);
498 }
499
500 @Override
501 public void run() {
502 synchronized (this) {
503 if (Thread.currentThread().isInterrupted()) {
504 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": aborting connect because thread was interrupted");
505 return;
506 }
507 forceCloseSocket();
508 }
509 connect();
510 }
511
512 private void processStream() throws XmlPullParserException, IOException, NoSuchAlgorithmException {
513 Tag nextTag = tagReader.readTag();
514 while (nextTag != null && !nextTag.isEnd("stream")) {
515 if (nextTag.isStart("error")) {
516 processStreamError(nextTag);
517 } else if (nextTag.isStart("features")) {
518 processStreamFeatures(nextTag);
519 } else if (nextTag.isStart("proceed")) {
520 switchOverToTls(nextTag);
521 } else if (nextTag.isStart("success")) {
522 final String challenge = tagReader.readElement(nextTag).getContent();
523 try {
524 saslMechanism.getResponse(challenge);
525 } catch (final SaslMechanism.AuthenticationException e) {
526 Log.e(Config.LOGTAG, String.valueOf(e));
527 throw new StateChangingException(Account.State.UNAUTHORIZED);
528 }
529 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": logged in");
530 account.setKey(Account.PINNED_MECHANISM_KEY,
531 String.valueOf(saslMechanism.getPriority()));
532 tagReader.reset();
533 sendStartStream();
534 final Tag tag = tagReader.readTag();
535 if (tag != null && tag.isStart("stream")) {
536 processStream();
537 } else {
538 throw new IOException("server didn't restart stream after successful auth");
539 }
540 break;
541 } else if (nextTag.isStart("failure")) {
542 final Element failure = tagReader.readElement(nextTag);
543 if (Namespace.SASL.equals(failure.getNamespace())) {
544 final String text = failure.findChildContent("text");
545 if (failure.hasChild("account-disabled")
546 && text != null
547 && text.contains("renew")
548 && Config.MAGIC_CREATE_DOMAIN != null
549 && text.contains(Config.MAGIC_CREATE_DOMAIN)) {
550 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
551 } else {
552 throw new StateChangingException(Account.State.UNAUTHORIZED);
553 }
554 } else if (Namespace.TLS.equals(failure.getNamespace())) {
555 throw new StateChangingException(Account.State.TLS_ERROR);
556 } else {
557 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
558 }
559 } else if (nextTag.isStart("challenge")) {
560 final String challenge = tagReader.readElement(nextTag).getContent();
561 final Element response = new Element("response", Namespace.SASL);
562 try {
563 response.setContent(saslMechanism.getResponse(challenge));
564 } catch (final SaslMechanism.AuthenticationException e) {
565 // TODO: Send auth abort tag.
566 Log.e(Config.LOGTAG, e.toString());
567 }
568 tagWriter.writeElement(response);
569 } else if (nextTag.isStart("enabled")) {
570 final Element enabled = tagReader.readElement(nextTag);
571 if ("true".equals(enabled.getAttribute("resume"))) {
572 this.streamId = enabled.getAttribute("id");
573 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
574 + ": stream management(" + smVersion
575 + ") enabled (resumable)");
576 } else {
577 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
578 + ": stream management(" + smVersion + ") enabled");
579 }
580 this.stanzasReceived = 0;
581 final RequestPacket r = new RequestPacket(smVersion);
582 tagWriter.writeStanzaAsync(r);
583 } else if (nextTag.isStart("resumed")) {
584 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
585 lastPacketReceived = SystemClock.elapsedRealtime();
586 final Element resumed = tagReader.readElement(nextTag);
587 final String h = resumed.getAttribute("h");
588 try {
589 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
590 synchronized (this.mStanzaQueue) {
591 final int serverCount = Integer.parseInt(h);
592 if (serverCount != stanzasSent) {
593 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
594 + ": session resumed with lost packages");
595 stanzasSent = serverCount;
596 } else {
597 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": session resumed");
598 }
599 acknowledgeStanzaUpTo(serverCount);
600 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
601 failedStanzas.add(mStanzaQueue.valueAt(i));
602 }
603 mStanzaQueue.clear();
604 }
605 Log.d(Config.LOGTAG, "resending " + failedStanzas.size() + " stanzas");
606 for (AbstractAcknowledgeableStanza packet : failedStanzas) {
607 if (packet instanceof MessagePacket) {
608 MessagePacket message = (MessagePacket) packet;
609 mXmppConnectionService.markMessage(account,
610 message.getTo().toBareJid(),
611 message.getId(),
612 Message.STATUS_UNSEND);
613 }
614 sendPacket(packet);
615 }
616 } catch (final NumberFormatException ignored) {
617 }
618 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": online with resource " + account.getResource());
619 changeStatus(Account.State.ONLINE);
620 } else if (nextTag.isStart("r")) {
621 tagReader.readElement(nextTag);
622 if (Config.EXTENDED_SM_LOGGING) {
623 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
624 }
625 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
626 tagWriter.writeStanzaAsync(ack);
627 } else if (nextTag.isStart("a")) {
628 boolean accountUiNeedsRefresh = false;
629 synchronized (NotificationService.CATCHUP_LOCK) {
630 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
631 int count = mSmCatchupMessageCounter.get();
632 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": SM catchup complete (" + count + ")");
633 accountUiNeedsRefresh = true;
634 if (count > 0) {
635 mXmppConnectionService.getNotificationService().finishBacklog(true, account);
636 }
637 }
638 }
639 if (accountUiNeedsRefresh) {
640 mXmppConnectionService.updateAccountUi();
641 }
642 final Element ack = tagReader.readElement(nextTag);
643 lastPacketReceived = SystemClock.elapsedRealtime();
644 try {
645 synchronized (this.mStanzaQueue) {
646 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
647 acknowledgeStanzaUpTo(serverSequence);
648 }
649 } catch (NumberFormatException | NullPointerException e) {
650 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server send ack without sequence number");
651 }
652 } else if (nextTag.isStart("failed")) {
653 Element failed = tagReader.readElement(nextTag);
654 try {
655 final int serverCount = Integer.parseInt(failed.getAttribute("h"));
656 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": resumption failed but server acknowledged stanza #" + serverCount);
657 synchronized (this.mStanzaQueue) {
658 acknowledgeStanzaUpTo(serverCount);
659 }
660 } catch (NumberFormatException | NullPointerException e) {
661 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": resumption failed");
662 }
663 resetStreamId();
664 sendBindRequest();
665 } else if (nextTag.isStart("iq")) {
666 processIq(nextTag);
667 } else if (nextTag.isStart("message")) {
668 processMessage(nextTag);
669 } else if (nextTag.isStart("presence")) {
670 processPresence(nextTag);
671 }
672 nextTag = tagReader.readTag();
673 }
674 }
675
676 private void acknowledgeStanzaUpTo(int serverCount) {
677 for (int i = 0; i < mStanzaQueue.size(); ++i) {
678 if (serverCount >= mStanzaQueue.keyAt(i)) {
679 if (Config.EXTENDED_SM_LOGGING) {
680 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
681 }
682 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
683 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
684 MessagePacket packet = (MessagePacket) stanza;
685 acknowledgedListener.onMessageAcknowledged(account, packet.getId());
686 }
687 mStanzaQueue.removeAt(i);
688 i--;
689 }
690 }
691 }
692
693 private Element processPacket(final Tag currentTag, final int packetType)
694 throws XmlPullParserException, IOException {
695 Element element;
696 switch (packetType) {
697 case PACKET_IQ:
698 element = new IqPacket();
699 break;
700 case PACKET_MESSAGE:
701 element = new MessagePacket();
702 break;
703 case PACKET_PRESENCE:
704 element = new PresencePacket();
705 break;
706 default:
707 return null;
708 }
709 element.setAttributes(currentTag.getAttributes());
710 Tag nextTag = tagReader.readTag();
711 if (nextTag == null) {
712 throw new IOException("interrupted mid tag");
713 }
714 while (!nextTag.isEnd(element.getName())) {
715 if (!nextTag.isNo()) {
716 final Element child = tagReader.readElement(nextTag);
717 final String type = currentTag.getAttribute("type");
718 if (packetType == PACKET_IQ
719 && "jingle".equals(child.getName())
720 && ("set".equalsIgnoreCase(type) || "get"
721 .equalsIgnoreCase(type))) {
722 element = new JinglePacket();
723 element.setAttributes(currentTag.getAttributes());
724 }
725 element.addChild(child);
726 }
727 nextTag = tagReader.readTag();
728 if (nextTag == null) {
729 throw new IOException("interrupted mid tag");
730 }
731 }
732 if (stanzasReceived == Integer.MAX_VALUE) {
733 resetStreamId();
734 throw new IOException("time to restart the session. cant handle >2 billion pcks");
735 }
736 ++stanzasReceived;
737 lastPacketReceived = SystemClock.elapsedRealtime();
738 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
739 Log.d(Config.LOGTAG, "[background stanza] " + element);
740 }
741 return element;
742 }
743
744 private void processIq(final Tag currentTag) throws XmlPullParserException, IOException {
745 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
746
747 if (packet.getId() == null) {
748 return; // an iq packet without id is definitely invalid
749 }
750
751 if (packet instanceof JinglePacket) {
752 if (this.jingleListener != null) {
753 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
754 }
755 } else {
756 OnIqPacketReceived callback = null;
757 synchronized (this.packetCallbacks) {
758 if (packetCallbacks.containsKey(packet.getId())) {
759 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
760 // Packets to the server should have responses from the server
761 if (packetCallbackDuple.first.toServer(account)) {
762 if (packet.fromServer(account)) {
763 callback = packetCallbackDuple.second;
764 packetCallbacks.remove(packet.getId());
765 } else {
766 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
767 }
768 } else {
769 if (packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
770 callback = packetCallbackDuple.second;
771 packetCallbacks.remove(packet.getId());
772 } else {
773 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
774 }
775 }
776 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
777 callback = this.unregisteredIqListener;
778 }
779 }
780 if (callback != null) {
781 try {
782 callback.onIqPacketReceived(account, packet);
783 } catch (StateChangingError error) {
784 throw new StateChangingException(error.state);
785 }
786 }
787 }
788 }
789
790 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
791 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
792 this.messageListener.onMessagePacketReceived(account, packet);
793 }
794
795 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
796 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
797 this.presenceListener.onPresencePacketReceived(account, packet);
798 }
799
800 private void sendStartTLS() throws IOException {
801 final Tag startTLS = Tag.empty("starttls");
802 startTLS.setAttribute("xmlns", Namespace.TLS);
803 tagWriter.writeTag(startTLS);
804 }
805
806
807 private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
808 tagReader.readTag();
809 try {
810 final TlsFactoryVerifier tlsFactoryVerifier = getTlsFactoryVerifier();
811 final InetAddress address = socket == null ? null : socket.getInetAddress();
812
813 if (address == null) {
814 throw new IOException("could not setup ssl");
815 }
816
817 final SSLSocket sslSocket = (SSLSocket) tlsFactoryVerifier.factory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
818
819 if (sslSocket == null) {
820 throw new IOException("could not initialize ssl socket");
821 }
822
823 SSLSocketHelper.setSecurity(sslSocket);
824
825 if (!tlsFactoryVerifier.verifier.verify(account.getServer().getDomainpart(), this.verifiedHostname, sslSocket.getSession())) {
826 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": TLS certificate verification failed");
827 throw new StateChangingException(Account.State.TLS_ERROR);
828 }
829 tagReader.setInputStream(sslSocket.getInputStream());
830 tagWriter.setOutputStream(sslSocket.getOutputStream());
831 sendStartStream();
832 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": TLS connection established");
833 features.encryptionEnabled = true;
834 final Tag tag = tagReader.readTag();
835 if (tag != null && tag.isStart("stream")) {
836 processStream();
837 } else {
838 throw new IOException("server didn't restart stream after STARTTLS");
839 }
840 sslSocket.close();
841 } catch (final NoSuchAlgorithmException | KeyManagementException e1) {
842 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": TLS certificate verification failed");
843 throw new StateChangingException(Account.State.TLS_ERROR);
844 }
845 }
846
847 private void processStreamFeatures(final Tag currentTag)
848 throws XmlPullParserException, IOException {
849 this.streamFeatures = tagReader.readElement(currentTag);
850 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
851 sendStartTLS();
852 } else if (this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
853 if (features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS) {
854 sendRegistryRequest();
855 } else {
856 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
857 }
858 } else if (!this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
859 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
860 } else if (this.streamFeatures.hasChild("mechanisms")
861 && shouldAuthenticate
862 && (features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS)) {
863 authenticate();
864 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
865 if (Config.EXTENDED_SM_LOGGING) {
866 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": resuming after stanza #" + stanzasReceived);
867 }
868 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
869 this.mSmCatchupMessageCounter.set(0);
870 this.mWaitingForSmCatchup.set(true);
871 this.tagWriter.writeStanzaAsync(resume);
872 } else if (needsBinding) {
873 if (this.streamFeatures.hasChild("bind")) {
874 sendBindRequest();
875 } else {
876 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
877 }
878 }
879 }
880
881 private void authenticate() throws IOException {
882 final List<String> mechanisms = extractMechanisms(streamFeatures
883 .findChild("mechanisms"));
884 final Element auth = new Element("auth", Namespace.SASL);
885 if (mechanisms.contains("EXTERNAL") && account.getPrivateKeyAlias() != null) {
886 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
887 } else if (mechanisms.contains("SCRAM-SHA-256")) {
888 saslMechanism = new ScramSha256(tagWriter, account, mXmppConnectionService.getRNG());
889 } else if (mechanisms.contains("SCRAM-SHA-1")) {
890 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
891 } else if (mechanisms.contains("PLAIN")) {
892 saslMechanism = new Plain(tagWriter, account);
893 } else if (mechanisms.contains("DIGEST-MD5")) {
894 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
895 } else if (mechanisms.contains("ANONYMOUS")) {
896 saslMechanism = new Anonymous(tagWriter, account, mXmppConnectionService.getRNG());
897 }
898 if (saslMechanism != null) {
899 final int pinnedMechanism = account.getKeyAsInt(Account.PINNED_MECHANISM_KEY, -1);
900 if (pinnedMechanism > saslMechanism.getPriority()) {
901 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
902 " has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
903 ") than pinned priority (" + pinnedMechanism +
904 "). Possible downgrade attack?");
905 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
906 }
907 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
908 auth.setAttribute("mechanism", saslMechanism.getMechanism());
909 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
910 auth.setContent(saslMechanism.getClientFirstMessage());
911 }
912 tagWriter.writeElement(auth);
913 } else {
914 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
915 }
916 }
917
918 private List<String> extractMechanisms(final Element stream) {
919 final ArrayList<String> mechanisms = new ArrayList<>(stream
920 .getChildren().size());
921 for (final Element child : stream.getChildren()) {
922 mechanisms.add(child.getContent());
923 }
924 return mechanisms;
925 }
926
927 private void sendRegistryRequest() {
928 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
929 register.query("jabber:iq:register");
930 register.setTo(account.getServer());
931 sendUnmodifiedIqPacket(register, new OnIqPacketReceived() {
932
933 @Override
934 public void onIqPacketReceived(final Account account, final IqPacket packet) {
935 boolean failed = false;
936 if (packet.getType() == IqPacket.TYPE.RESULT
937 && packet.query().hasChild("username")
938 && (packet.query().hasChild("password"))) {
939 final IqPacket register = new IqPacket(IqPacket.TYPE.SET);
940 final Element username = new Element("username").setContent(account.getUsername());
941 final Element password = new Element("password").setContent(account.getPassword());
942 register.query("jabber:iq:register").addChild(username);
943 register.query().addChild(password);
944 register.setFrom(account.getJid().toBareJid());
945 sendUnmodifiedIqPacket(register, registrationResponseListener);
946 } else if (packet.getType() == IqPacket.TYPE.RESULT
947 && (packet.query().hasChild("x", "jabber:x:data"))) {
948 final Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
949 final Element blob = packet.query().findChild("data", "urn:xmpp:bob");
950 final String id = packet.getId();
951
952 Bitmap captcha = null;
953 if (blob != null) {
954 try {
955 final String base64Blob = blob.getContent();
956 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
957 InputStream stream = new ByteArrayInputStream(strBlob);
958 captcha = BitmapFactory.decodeStream(stream);
959 } catch (Exception e) {
960 //ignored
961 }
962 } else {
963 try {
964 Field url = data.getFieldByName("url");
965 String urlString = url.findChildContent("value");
966 URL uri = new URL(urlString);
967 captcha = BitmapFactory.decodeStream(uri.openConnection().getInputStream());
968 } catch (IOException e) {
969 Log.e(Config.LOGTAG, e.toString());
970 }
971 }
972
973 if (captcha != null) {
974 failed = !mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha);
975 }
976 } else {
977 failed = true;
978 }
979
980 if (failed) {
981 final Element query = packet.query();
982 final String instructions = query.findChildContent("instructions");
983 final Element oob = query.findChild("x", Namespace.OOB);
984 final String url = oob == null ? null : oob.findChildContent("url");
985 if (url == null && instructions != null) {
986 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
987 if (matcher.find()) {
988 setAccountCreationFailed(instructions.substring(matcher.start(), matcher.end()));
989 } else {
990 setAccountCreationFailed(null);
991 }
992 } else {
993 setAccountCreationFailed(url);
994 }
995 }
996 }
997 });
998 }
999
1000 private void setAccountCreationFailed(String url) {
1001 if (url != null && (url.toLowerCase().startsWith("http://") || url.toLowerCase().startsWith("https://"))) {
1002 changeStatus(Account.State.REGISTRATION_WEB);
1003 this.webRegistrationUrl = url;
1004 } else {
1005 changeStatus(Account.State.REGISTRATION_FAILED);
1006 }
1007 disconnect(true);
1008 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not register. url=" + url);
1009 }
1010
1011 public String getWebRegistrationUrl() {
1012 return this.webRegistrationUrl;
1013 }
1014
1015 public void resetEverything() {
1016 resetAttemptCount(true);
1017 resetStreamId();
1018 clearIqCallbacks();
1019 mStanzaQueue.clear();
1020 this.webRegistrationUrl = null;
1021 synchronized (this.disco) {
1022 disco.clear();
1023 }
1024 }
1025
1026 private void sendBindRequest() {
1027 while (!mXmppConnectionService.areMessagesInitialized() && socket != null && !socket.isClosed()) {
1028 uninterruptedSleep(500);
1029 }
1030 needsBinding = false;
1031 clearIqCallbacks();
1032 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1033 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
1034 .addChild("resource").setContent(account.getResource());
1035 this.sendUnmodifiedIqPacket(iq, new OnIqPacketReceived() {
1036 @Override
1037 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1038 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1039 return;
1040 }
1041 final Element bind = packet.findChild("bind");
1042 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1043 final Element jid = bind.findChild("jid");
1044 if (jid != null && jid.getContent() != null) {
1045 try {
1046 if (account.setJid(Jid.fromString(jid.getContent()))) {
1047 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": bare jid changed during bind. updating database");
1048 mXmppConnectionService.databaseBackend.updateAccount(account);
1049 }
1050 if (streamFeatures.hasChild("session")
1051 && !streamFeatures.findChild("session").hasChild("optional")) {
1052 sendStartSession();
1053 } else {
1054 sendPostBindInitialization();
1055 }
1056 return;
1057 } catch (final InvalidJidException e) {
1058 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server reported invalid jid (" + jid.getContent() + ") on bind");
1059 }
1060 } else {
1061 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure. (no jid)");
1062 }
1063 } else {
1064 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet.toString());
1065 }
1066 final Element error = packet.findChild("error");
1067 final String resource = account.getResource().split("\\.")[0];
1068 if (packet.getType() == IqPacket.TYPE.ERROR && error != null && error.hasChild("conflict")) {
1069 account.setResource(resource + "." + nextRandomId());
1070 } else {
1071 account.setResource(resource);
1072 }
1073 throw new StateChangingError(Account.State.BIND_FAILURE);
1074 }
1075 });
1076 }
1077
1078 private void clearIqCallbacks() {
1079 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1080 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1081 synchronized (this.packetCallbacks) {
1082 if (this.packetCallbacks.size() == 0) {
1083 return;
1084 }
1085 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": clearing " + this.packetCallbacks.size() + " iq callbacks");
1086 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
1087 while (iterator.hasNext()) {
1088 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1089 callbacks.add(entry.second);
1090 iterator.remove();
1091 }
1092 }
1093 for (OnIqPacketReceived callback : callbacks) {
1094 try {
1095 callback.onIqPacketReceived(account, failurePacket);
1096 } catch (StateChangingError error) {
1097 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": caught StateChangingError(" + error.state.toString() + ") while clearing callbacks");
1098 //ignore
1099 }
1100 }
1101 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
1102 }
1103
1104 public void sendDiscoTimeout() {
1105 if (mWaitForDisco.compareAndSet(true, false)) {
1106 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": finalizing bind after disco timeout");
1107 finalizeBind();
1108 }
1109 }
1110
1111 private void sendStartSession() {
1112 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": sending legacy session to outdated server");
1113 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1114 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1115 this.sendUnmodifiedIqPacket(startSession, new OnIqPacketReceived() {
1116 @Override
1117 public void onIqPacketReceived(Account account, IqPacket packet) {
1118 if (packet.getType() == IqPacket.TYPE.RESULT) {
1119 sendPostBindInitialization();
1120 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1121 throw new StateChangingError(Account.State.SESSION_FAILURE);
1122 }
1123 }
1124 });
1125 }
1126
1127 private void sendPostBindInitialization() {
1128 smVersion = 0;
1129 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
1130 smVersion = 3;
1131 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
1132 smVersion = 2;
1133 }
1134 if (smVersion != 0) {
1135 synchronized (this.mStanzaQueue) {
1136 final EnablePacket enable = new EnablePacket(smVersion);
1137 tagWriter.writeStanzaAsync(enable);
1138 stanzasSent = 0;
1139 mStanzaQueue.clear();
1140 }
1141 }
1142 features.carbonsEnabled = false;
1143 features.blockListRequested = false;
1144 synchronized (this.disco) {
1145 this.disco.clear();
1146 }
1147 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": starting service discovery");
1148 mPendingServiceDiscoveries.set(0);
1149 if (smVersion == 0 || Patches.DISCO_EXCEPTIONS.contains(account.getJid().getDomainpart())) {
1150 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": do not wait for service discovery");
1151 mWaitForDisco.set(false);
1152 } else {
1153 mWaitForDisco.set(true);
1154 }
1155 lastDiscoStarted = SystemClock.elapsedRealtime();
1156 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1157 Element caps = streamFeatures.findChild("c");
1158 final String hash = caps == null ? null : caps.getAttribute("hash");
1159 final String ver = caps == null ? null : caps.getAttribute("ver");
1160 ServiceDiscoveryResult discoveryResult = null;
1161 if (hash != null && ver != null) {
1162 discoveryResult = mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1163 }
1164 if (discoveryResult == null) {
1165 sendServiceDiscoveryInfo(account.getServer());
1166 } else {
1167 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server caps came from cache");
1168 disco.put(account.getServer(), discoveryResult);
1169 }
1170 sendServiceDiscoveryInfo(account.getJid().toBareJid());
1171 sendServiceDiscoveryItems(account.getServer());
1172
1173 if (!mWaitForDisco.get()) {
1174 finalizeBind();
1175 }
1176 this.lastSessionStarted = SystemClock.elapsedRealtime();
1177 }
1178
1179 private void sendServiceDiscoveryInfo(final Jid jid) {
1180 mPendingServiceDiscoveries.incrementAndGet();
1181 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1182 iq.setTo(jid);
1183 iq.query("http://jabber.org/protocol/disco#info");
1184 this.sendIqPacket(iq, new OnIqPacketReceived() {
1185
1186 @Override
1187 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1188 if (packet.getType() == IqPacket.TYPE.RESULT) {
1189 boolean advancedStreamFeaturesLoaded;
1190 synchronized (XmppConnection.this.disco) {
1191 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1192 if (jid.equals(account.getServer())) {
1193 mXmppConnectionService.databaseBackend.insertDiscoveryResult(result);
1194 }
1195 disco.put(jid, result);
1196 advancedStreamFeaturesLoaded = disco.containsKey(account.getServer())
1197 && disco.containsKey(account.getJid().toBareJid());
1198 }
1199 if (advancedStreamFeaturesLoaded && (jid.equals(account.getServer()) || jid.equals(account.getJid().toBareJid()))) {
1200 enableAdvancedStreamFeatures();
1201 }
1202 } else {
1203 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not query disco info for " + jid.toString());
1204 }
1205 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1206 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1207 && mWaitForDisco.compareAndSet(true, false)) {
1208 finalizeBind();
1209 }
1210 }
1211 }
1212 });
1213 }
1214
1215 private void finalizeBind() {
1216 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": online with resource " + account.getResource());
1217 if (bindListener != null) {
1218 bindListener.onBind(account);
1219 }
1220 changeStatus(Account.State.ONLINE);
1221 }
1222
1223 private void enableAdvancedStreamFeatures() {
1224 if (getFeatures().carbons() && !features.carbonsEnabled) {
1225 sendEnableCarbons();
1226 }
1227 if (getFeatures().blocking() && !features.blockListRequested) {
1228 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": Requesting block list");
1229 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1230 }
1231 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1232 listener.onAdvancedStreamFeaturesAvailable(account);
1233 }
1234 }
1235
1236 private void sendServiceDiscoveryItems(final Jid server) {
1237 mPendingServiceDiscoveries.incrementAndGet();
1238 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1239 iq.setTo(server.toDomainJid());
1240 iq.query("http://jabber.org/protocol/disco#items");
1241 this.sendIqPacket(iq, new OnIqPacketReceived() {
1242
1243 @Override
1244 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1245 if (packet.getType() == IqPacket.TYPE.RESULT) {
1246 HashSet<Jid> items = new HashSet<Jid>();
1247 final List<Element> elements = packet.query().getChildren();
1248 for (final Element element : elements) {
1249 if (element.getName().equals("item")) {
1250 final Jid jid = element.getAttributeAsJid("jid");
1251 if (jid != null && !jid.equals(account.getServer())) {
1252 items.add(jid);
1253 }
1254 }
1255 }
1256 for (Jid jid : items) {
1257 sendServiceDiscoveryInfo(jid);
1258 }
1259 } else {
1260 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not query disco items of " + server);
1261 }
1262 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1263 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1264 && mWaitForDisco.compareAndSet(true, false)) {
1265 finalizeBind();
1266 }
1267 }
1268 }
1269 });
1270 }
1271
1272 private void sendEnableCarbons() {
1273 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1274 iq.addChild("enable", "urn:xmpp:carbons:2");
1275 this.sendIqPacket(iq, new OnIqPacketReceived() {
1276
1277 @Override
1278 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1279 if (!packet.hasChild("error")) {
1280 Log.d(Config.LOGTAG, account.getJid().toBareJid()
1281 + ": successfully enabled carbons");
1282 features.carbonsEnabled = true;
1283 } else {
1284 Log.d(Config.LOGTAG, account.getJid().toBareJid()
1285 + ": error enableing carbons " + packet.toString());
1286 }
1287 }
1288 });
1289 }
1290
1291 private void processStreamError(final Tag currentTag)
1292 throws XmlPullParserException, IOException {
1293 final Element streamError = tagReader.readElement(currentTag);
1294 if (streamError == null) {
1295 return;
1296 }
1297 if (streamError.hasChild("conflict")) {
1298 final String resource = account.getResource().split("\\.")[0];
1299 account.setResource(resource + "." + nextRandomId());
1300 Log.d(Config.LOGTAG,
1301 account.getJid().toBareJid() + ": switching resource due to conflict ("
1302 + account.getResource() + ")");
1303 throw new IOException();
1304 } else if (streamError.hasChild("host-unknown")) {
1305 throw new StateChangingException(Account.State.HOST_UNKNOWN);
1306 } else if (streamError.hasChild("policy-violation")) {
1307 throw new StateChangingException(Account.State.POLICY_VIOLATION);
1308 } else {
1309 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": stream error " + streamError.toString());
1310 throw new StateChangingException(Account.State.STREAM_ERROR);
1311 }
1312 }
1313
1314 private void sendStartStream() throws IOException {
1315 final Tag stream = Tag.start("stream:stream");
1316 stream.setAttribute("to", account.getServer().toString());
1317 stream.setAttribute("version", "1.0");
1318 stream.setAttribute("xml:lang", "en");
1319 stream.setAttribute("xmlns", "jabber:client");
1320 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1321 tagWriter.writeTag(stream);
1322 }
1323
1324 private String nextRandomId() {
1325 return CryptoHelper.random(50, mXmppConnectionService.getRNG());
1326 }
1327
1328 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1329 packet.setFrom(account.getJid());
1330 return this.sendUnmodifiedIqPacket(packet, callback);
1331 }
1332
1333 public synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1334 if (packet.getId() == null) {
1335 packet.setAttribute("id", nextRandomId());
1336 }
1337 if (callback != null) {
1338 synchronized (this.packetCallbacks) {
1339 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1340 }
1341 }
1342 this.sendPacket(packet);
1343 return packet.getId();
1344 }
1345
1346 public void sendMessagePacket(final MessagePacket packet) {
1347 this.sendPacket(packet);
1348 }
1349
1350 public void sendPresencePacket(final PresencePacket packet) {
1351 this.sendPacket(packet);
1352 }
1353
1354 private synchronized void sendPacket(final AbstractStanza packet) {
1355 if (stanzasSent == Integer.MAX_VALUE) {
1356 resetStreamId();
1357 disconnect(true);
1358 return;
1359 }
1360 synchronized (this.mStanzaQueue) {
1361 tagWriter.writeStanzaAsync(packet);
1362 if (packet instanceof AbstractAcknowledgeableStanza) {
1363 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1364 ++stanzasSent;
1365 this.mStanzaQueue.append(stanzasSent, stanza);
1366 if (stanza instanceof MessagePacket && stanza.getId() != null && getFeatures().sm()) {
1367 if (Config.EXTENDED_SM_LOGGING) {
1368 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1369 }
1370 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1371 }
1372 }
1373 }
1374 }
1375
1376 public void sendPing() {
1377 if (!r()) {
1378 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1379 iq.setFrom(account.getJid());
1380 iq.addChild("ping", "urn:xmpp:ping");
1381 this.sendIqPacket(iq, null);
1382 }
1383 this.lastPingSent = SystemClock.elapsedRealtime();
1384 }
1385
1386 public void setOnMessagePacketReceivedListener(
1387 final OnMessagePacketReceived listener) {
1388 this.messageListener = listener;
1389 }
1390
1391 public void setOnUnregisteredIqPacketReceivedListener(
1392 final OnIqPacketReceived listener) {
1393 this.unregisteredIqListener = listener;
1394 }
1395
1396 public void setOnPresencePacketReceivedListener(
1397 final OnPresencePacketReceived listener) {
1398 this.presenceListener = listener;
1399 }
1400
1401 public void setOnJinglePacketReceivedListener(
1402 final OnJinglePacketReceived listener) {
1403 this.jingleListener = listener;
1404 }
1405
1406 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1407 this.statusListener = listener;
1408 }
1409
1410 public void setOnBindListener(final OnBindListener listener) {
1411 this.bindListener = listener;
1412 }
1413
1414 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1415 this.acknowledgedListener = listener;
1416 }
1417
1418 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1419 if (!this.advancedStreamFeaturesLoadedListeners.contains(listener)) {
1420 this.advancedStreamFeaturesLoadedListeners.add(listener);
1421 }
1422 }
1423
1424 private void forceCloseSocket() {
1425 if (socket != null) {
1426 try {
1427 socket.close();
1428 } catch (IOException e) {
1429 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": io exception " + e.getMessage() + " during force close");
1430 }
1431 } else {
1432 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": socket was null during force close");
1433 }
1434 }
1435
1436 public void interrupt() {
1437 Thread.currentThread().interrupt();
1438 }
1439
1440 public void disconnect(final boolean force) {
1441 interrupt();
1442 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": disconnecting force=" + Boolean.toString(force));
1443 if (force) {
1444 forceCloseSocket();
1445 } else {
1446 if (tagWriter.isActive()) {
1447 tagWriter.finish();
1448 final Socket currentSocket = socket;
1449 try {
1450 for (int i = 0; i <= 10 && !tagWriter.finished() && !currentSocket.isClosed(); ++i) {
1451 uninterruptedSleep(100);
1452 }
1453 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": closing stream");
1454 tagWriter.writeTag(Tag.end("stream:stream"));
1455 for (int i = 0; i <= 20 && !currentSocket.isClosed(); ++i) {
1456 uninterruptedSleep(100);
1457 }
1458 if (currentSocket.isClosed()) {
1459 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": remote closed socket");
1460 } else {
1461 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": remote has not closed socket. force closing");
1462 }
1463 } catch (final IOException e) {
1464 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": io exception during disconnect (" + e.getMessage() + ")");
1465 } finally {
1466 FileBackend.close(currentSocket);
1467 forceCloseSocket();
1468 }
1469 } else {
1470 forceCloseSocket();
1471 }
1472 }
1473 }
1474
1475 private static void uninterruptedSleep(int time) {
1476 try {
1477 Thread.sleep(time);
1478 } catch (InterruptedException e) {
1479 //ignore
1480 }
1481 }
1482
1483 public void resetStreamId() {
1484 this.streamId = null;
1485 }
1486
1487 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
1488 synchronized (this.disco) {
1489 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
1490 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
1491 if (cursor.getValue().getFeatures().contains(feature)) {
1492 items.add(cursor);
1493 }
1494 }
1495 return items;
1496 }
1497 }
1498
1499 public Jid findDiscoItemByFeature(final String feature) {
1500 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
1501 if (items.size() >= 1) {
1502 return items.get(0).getKey();
1503 }
1504 return null;
1505 }
1506
1507 public boolean r() {
1508 if (getFeatures().sm()) {
1509 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1510 return true;
1511 } else {
1512 return false;
1513 }
1514 }
1515
1516 public String getMucServer() {
1517 synchronized (this.disco) {
1518 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
1519 final ServiceDiscoveryResult value = cursor.getValue();
1520 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
1521 && !value.getFeatures().contains("jabber:iq:gateway")
1522 && !value.hasIdentity("conference", "irc")) {
1523 return cursor.getKey().toString();
1524 }
1525 }
1526 }
1527 return null;
1528 }
1529
1530 public int getTimeToNextAttempt() {
1531 final int interval = Math.min((int) (25 * Math.pow(1.3, attempt)), 300);
1532 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1533 return interval - secondsSinceLast;
1534 }
1535
1536 public int getAttempt() {
1537 return this.attempt;
1538 }
1539
1540 public Features getFeatures() {
1541 return this.features;
1542 }
1543
1544 public long getLastSessionEstablished() {
1545 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1546 return System.currentTimeMillis() - diff;
1547 }
1548
1549 public long getLastConnect() {
1550 return this.lastConnect;
1551 }
1552
1553 public long getLastPingSent() {
1554 return this.lastPingSent;
1555 }
1556
1557 public long getLastDiscoStarted() {
1558 return this.lastDiscoStarted;
1559 }
1560
1561 public long getLastPacketReceived() {
1562 return this.lastPacketReceived;
1563 }
1564
1565 public void sendActive() {
1566 this.sendPacket(new ActivePacket());
1567 }
1568
1569 public void sendInactive() {
1570 this.sendPacket(new InactivePacket());
1571 }
1572
1573 public void resetAttemptCount(boolean resetConnectTime) {
1574 this.attempt = 0;
1575 if (resetConnectTime) {
1576 this.lastConnect = 0;
1577 }
1578 }
1579
1580 public void setInteractive(boolean interactive) {
1581 this.mInteractive = interactive;
1582 }
1583
1584 public Identity getServerIdentity() {
1585 synchronized (this.disco) {
1586 ServiceDiscoveryResult result = disco.get(account.getJid().toDomainJid());
1587 if (result == null) {
1588 return Identity.UNKNOWN;
1589 }
1590 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
1591 if (id.getType().equals("im") && id.getCategory().equals("server") && id.getName() != null) {
1592 switch (id.getName()) {
1593 case "Prosody":
1594 return Identity.PROSODY;
1595 case "ejabberd":
1596 return Identity.EJABBERD;
1597 case "Slack-XMPP":
1598 return Identity.SLACK;
1599 }
1600 }
1601 }
1602 }
1603 return Identity.UNKNOWN;
1604 }
1605
1606 private class StateChangingError extends Error {
1607 private final Account.State state;
1608
1609 public StateChangingError(Account.State state) {
1610 this.state = state;
1611 }
1612 }
1613
1614 private class StateChangingException extends IOException {
1615 private final Account.State state;
1616
1617 public StateChangingException(Account.State state) {
1618 this.state = state;
1619 }
1620 }
1621
1622 public enum Identity {
1623 FACEBOOK,
1624 SLACK,
1625 EJABBERD,
1626 PROSODY,
1627 NIMBUZZ,
1628 UNKNOWN
1629 }
1630
1631 public class Features {
1632 XmppConnection connection;
1633 private boolean carbonsEnabled = false;
1634 private boolean encryptionEnabled = false;
1635 private boolean blockListRequested = false;
1636
1637 public Features(final XmppConnection connection) {
1638 this.connection = connection;
1639 }
1640
1641 private boolean hasDiscoFeature(final Jid server, final String feature) {
1642 synchronized (XmppConnection.this.disco) {
1643 return connection.disco.containsKey(server) &&
1644 connection.disco.get(server).getFeatures().contains(feature);
1645 }
1646 }
1647
1648 public boolean carbons() {
1649 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
1650 }
1651
1652 public boolean blocking() {
1653 return hasDiscoFeature(account.getServer(), Namespace.BLOCKING);
1654 }
1655
1656 public boolean spamReporting() {
1657 return hasDiscoFeature(account.getServer(), "urn:xmpp:reporting:reason:spam:0");
1658 }
1659
1660 public boolean register() {
1661 return hasDiscoFeature(account.getServer(), Namespace.REGISTER);
1662 }
1663
1664 public boolean sm() {
1665 return streamId != null
1666 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1667 }
1668
1669 public boolean csi() {
1670 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1671 }
1672
1673 public boolean pep() {
1674 synchronized (XmppConnection.this.disco) {
1675 ServiceDiscoveryResult info = disco.get(account.getJid().toBareJid());
1676 return info != null && info.hasIdentity("pubsub", "pep");
1677 }
1678 }
1679
1680 public boolean pepPersistent() {
1681 synchronized (XmppConnection.this.disco) {
1682 ServiceDiscoveryResult info = disco.get(account.getJid().toBareJid());
1683 return info != null && info.getFeatures().contains("http://jabber.org/protocol/pubsub#persistent-items");
1684 }
1685 }
1686
1687 public boolean pepPublishOptions() {
1688 synchronized (XmppConnection.this.disco) {
1689 ServiceDiscoveryResult info = disco.get(account.getJid().toBareJid());
1690 return info != null && info.getFeatures().contains(Namespace.PUBSUB_PUBLISH_OPTIONS);
1691 }
1692 }
1693
1694 public boolean mam() {
1695 return hasDiscoFeature(account.getJid().toBareJid(), Namespace.MAM)
1696 || hasDiscoFeature(account.getJid().toBareJid(), Namespace.MAM_LEGACY);
1697 }
1698
1699 public boolean mamLegacy() {
1700 return !hasDiscoFeature(account.getJid().toBareJid(), Namespace.MAM)
1701 && hasDiscoFeature(account.getJid().toBareJid(), Namespace.MAM_LEGACY);
1702 }
1703
1704 public boolean push() {
1705 return hasDiscoFeature(account.getJid().toBareJid(), "urn:xmpp:push:0")
1706 || hasDiscoFeature(account.getServer(), "urn:xmpp:push:0");
1707 }
1708
1709 public boolean rosterVersioning() {
1710 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1711 }
1712
1713 public void setBlockListRequested(boolean value) {
1714 this.blockListRequested = value;
1715 }
1716
1717 public boolean httpUpload(long filesize) {
1718 if (Config.DISABLE_HTTP_UPLOAD) {
1719 return false;
1720 } else {
1721 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(Namespace.HTTP_UPLOAD);
1722 if (items.size() > 0) {
1723 try {
1724 long maxsize = Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(Namespace.HTTP_UPLOAD, "max-file-size"));
1725 if (filesize <= maxsize) {
1726 return true;
1727 } else {
1728 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": http upload is not available for files with size " + filesize + " (max is " + maxsize + ")");
1729 return false;
1730 }
1731 } catch (Exception e) {
1732 return true;
1733 }
1734 } else {
1735 return false;
1736 }
1737 }
1738 }
1739
1740 public long getMaxHttpUploadSize() {
1741 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(Namespace.HTTP_UPLOAD);
1742 if (items.size() > 0) {
1743 try {
1744 return Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(Namespace.HTTP_UPLOAD, "max-file-size"));
1745 } catch (Exception e) {
1746 return -1;
1747 }
1748 } else {
1749 return -1;
1750 }
1751 }
1752
1753 public boolean stanzaIds() {
1754 return hasDiscoFeature(account.getJid().toBareJid(), Namespace.STANZA_IDS);
1755 }
1756 }
1757
1758 private IqGenerator getIqGenerator() {
1759 return mXmppConnectionService.getIqGenerator();
1760 }
1761}