1package eu.siacs.conversations.xmpp;
2
3import android.os.Bundle;
4import android.os.Parcelable;
5import android.os.PowerManager;
6import android.os.PowerManager.WakeLock;
7import android.os.SystemClock;
8import android.util.Log;
9import android.util.Pair;
10import android.util.SparseArray;
11
12import org.apache.http.conn.ssl.StrictHostnameVerifier;
13import org.json.JSONException;
14import org.json.JSONObject;
15import org.xmlpull.v1.XmlPullParserException;
16
17import java.io.IOException;
18import java.io.InputStream;
19import java.io.OutputStream;
20import java.math.BigInteger;
21import java.net.ConnectException;
22import java.net.IDN;
23import java.net.InetAddress;
24import java.net.InetSocketAddress;
25import java.net.Socket;
26import java.net.UnknownHostException;
27import java.security.KeyManagementException;
28import java.security.NoSuchAlgorithmException;
29import java.util.ArrayList;
30import java.util.Arrays;
31import java.util.Collection;
32import java.util.HashMap;
33import java.util.Hashtable;
34import java.util.Iterator;
35import java.util.LinkedList;
36import java.util.List;
37import java.util.Map.Entry;
38
39import javax.net.ssl.HostnameVerifier;
40import javax.net.ssl.SSLContext;
41import javax.net.ssl.SSLSocket;
42import javax.net.ssl.SSLSocketFactory;
43import javax.net.ssl.X509TrustManager;
44
45import eu.siacs.conversations.Config;
46import eu.siacs.conversations.crypto.sasl.DigestMd5;
47import eu.siacs.conversations.crypto.sasl.Plain;
48import eu.siacs.conversations.crypto.sasl.SaslMechanism;
49import eu.siacs.conversations.crypto.sasl.ScramSha1;
50import eu.siacs.conversations.entities.Account;
51import eu.siacs.conversations.entities.Message;
52import eu.siacs.conversations.generator.IqGenerator;
53import eu.siacs.conversations.services.XmppConnectionService;
54import eu.siacs.conversations.utils.CryptoHelper;
55import eu.siacs.conversations.utils.DNSHelper;
56import eu.siacs.conversations.utils.Xmlns;
57import eu.siacs.conversations.xml.Element;
58import eu.siacs.conversations.xml.Tag;
59import eu.siacs.conversations.xml.TagWriter;
60import eu.siacs.conversations.xml.XmlReader;
61import eu.siacs.conversations.xmpp.jid.InvalidJidException;
62import eu.siacs.conversations.xmpp.jid.Jid;
63import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
64import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
65import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
66import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
67import eu.siacs.conversations.xmpp.stanzas.IqPacket;
68import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
69import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
70import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
71import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
72import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
73import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
74import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
75import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
76
77public class XmppConnection implements Runnable {
78
79 private static final int PACKET_IQ = 0;
80 private static final int PACKET_MESSAGE = 1;
81 private static final int PACKET_PRESENCE = 2;
82 protected Account account;
83 private final WakeLock wakeLock;
84 private Socket socket;
85 private XmlReader tagReader;
86 private TagWriter tagWriter;
87 private final Features features = new Features(this);
88 private boolean needsBinding = true;
89 private boolean shouldAuthenticate = true;
90 private Element streamFeatures;
91 private final HashMap<Jid, Info> disco = new HashMap<>();
92
93 private String streamId = null;
94 private int smVersion = 3;
95 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
96
97 private int stanzasReceived = 0;
98 private int stanzasSent = 0;
99 private long lastPacketReceived = 0;
100 private long lastPingSent = 0;
101 private long lastConnect = 0;
102 private long lastSessionStarted = 0;
103 private int attempt = 0;
104 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
105 private OnPresencePacketReceived presenceListener = null;
106 private OnJinglePacketReceived jingleListener = null;
107 private OnIqPacketReceived unregisteredIqListener = null;
108 private OnMessagePacketReceived messageListener = null;
109 private OnStatusChanged statusListener = null;
110 private OnBindListener bindListener = null;
111 private final ArrayList<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new ArrayList<>();
112 private OnMessageAcknowledged acknowledgedListener = null;
113 private XmppConnectionService mXmppConnectionService = null;
114
115 private SaslMechanism saslMechanism;
116
117 public XmppConnection(final Account account, final XmppConnectionService service) {
118 this.account = account;
119 this.wakeLock = service.getPowerManager().newWakeLock(
120 PowerManager.PARTIAL_WAKE_LOCK, account.getJid().toBareJid().toString());
121 tagWriter = new TagWriter();
122 mXmppConnectionService = service;
123 }
124
125 protected void changeStatus(final Account.State nextStatus) {
126 if (account.getStatus() != nextStatus) {
127 if ((nextStatus == Account.State.OFFLINE)
128 && (account.getStatus() != Account.State.CONNECTING)
129 && (account.getStatus() != Account.State.ONLINE)
130 && (account.getStatus() != Account.State.DISABLED)) {
131 return;
132 }
133 if (nextStatus == Account.State.ONLINE) {
134 this.attempt = 0;
135 }
136 account.setStatus(nextStatus);
137 if (statusListener != null) {
138 statusListener.onStatusChanged(account);
139 }
140 }
141 }
142
143 protected void connect() {
144 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": connecting");
145 features.encryptionEnabled = false;
146 lastConnect = SystemClock.elapsedRealtime();
147 lastPingSent = SystemClock.elapsedRealtime();
148 this.attempt++;
149 try {
150 shouldAuthenticate = needsBinding = !account.isOptionSet(Account.OPTION_REGISTER);
151 tagReader = new XmlReader(wakeLock);
152 tagWriter = new TagWriter();
153 this.changeStatus(Account.State.CONNECTING);
154 if (DNSHelper.isIp(account.getServer().toString())) {
155 socket = new Socket();
156 try {
157 socket.connect(new InetSocketAddress(account.getServer().toString(), 5222), Config.SOCKET_TIMEOUT * 1000);
158 } catch (IOException e) {
159 throw new UnknownHostException();
160 }
161 } else {
162 final Bundle result = DNSHelper.getSRVRecord(account.getServer(),mXmppConnectionService);
163 final ArrayList<Parcelable> values = result.getParcelableArrayList("values");
164 int i = 0;
165 boolean socketError = true;
166 while (socketError && values.size() > i) {
167 final Bundle namePort = (Bundle) values.get(i);
168 try {
169 String srvRecordServer;
170 try {
171 srvRecordServer = IDN.toASCII(namePort.getString("name"));
172 } catch (final IllegalArgumentException e) {
173 // TODO: Handle me?`
174 srvRecordServer = "";
175 }
176 final int srvRecordPort = namePort.getInt("port");
177 final String srvIpServer = namePort.getString("ip");
178 final InetSocketAddress addr;
179 if (srvIpServer != null) {
180 addr = new InetSocketAddress(srvIpServer, srvRecordPort);
181 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
182 + ": using values from dns " + srvRecordServer
183 + "[" + srvIpServer + "]:" + srvRecordPort);
184 } else {
185 addr = new InetSocketAddress(srvRecordServer, srvRecordPort);
186 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
187 + ": using values from dns "
188 + srvRecordServer + ":" + srvRecordPort);
189 }
190 socket = new Socket();
191 socket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
192 socketError = false;
193 } catch (final Throwable e) {
194 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
195 i++;
196 }
197 }
198 if (socketError) {
199 throw new UnknownHostException();
200 }
201 }
202 final OutputStream out = socket.getOutputStream();
203 tagWriter.setOutputStream(out);
204 final InputStream in = socket.getInputStream();
205 tagReader.setInputStream(in);
206 tagWriter.beginDocument();
207 sendStartStream();
208 Tag nextTag;
209 while ((nextTag = tagReader.readTag()) != null) {
210 if (nextTag.isStart("stream")) {
211 processStream(nextTag);
212 break;
213 } else {
214 throw new IOException("unknown tag on connect");
215 }
216 }
217 if (socket.isConnected()) {
218 socket.close();
219 }
220 } catch (final IncompatibleServerException e) {
221 this.changeStatus(Account.State.INCOMPATIBLE_SERVER);
222 } catch (final SecurityException e) {
223 this.changeStatus(Account.State.SECURITY_ERROR);
224 } catch (final UnauthorizedException e) {
225 this.changeStatus(Account.State.UNAUTHORIZED);
226 } catch (final UnknownHostException | ConnectException e) {
227 this.changeStatus(Account.State.SERVER_NOT_FOUND);
228 } catch (final DnsTimeoutException e) {
229 this.changeStatus(Account.State.DNS_TIMEOUT);
230 } catch (final IOException | XmlPullParserException | NoSuchAlgorithmException e) {
231 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
232 this.changeStatus(Account.State.OFFLINE);
233 this.attempt--; //don't count attempt when reconnecting instantly anyway
234 } finally {
235 if (socket != null) {
236 try {
237 socket.close();
238 } catch (IOException e) {
239
240 }
241 }
242 if (wakeLock.isHeld()) {
243 try {
244 wakeLock.release();
245 } catch (final RuntimeException ignored) {
246 }
247 }
248 }
249 }
250
251 @Override
252 public void run() {
253 try {
254 if (socket != null) {
255 socket.close();
256 }
257 } catch (final IOException ignored) {
258
259 }
260 connect();
261 }
262
263 private void processStream(final Tag currentTag) throws XmlPullParserException,
264 IOException, NoSuchAlgorithmException {
265 Tag nextTag = tagReader.readTag();
266
267 while ((nextTag != null) && (!nextTag.isEnd("stream"))) {
268 if (nextTag.isStart("error")) {
269 processStreamError(nextTag);
270 } else if (nextTag.isStart("features")) {
271 processStreamFeatures(nextTag);
272 } else if (nextTag.isStart("proceed")) {
273 switchOverToTls(nextTag);
274 } else if (nextTag.isStart("success")) {
275 final String challenge = tagReader.readElement(nextTag).getContent();
276 try {
277 saslMechanism.getResponse(challenge);
278 } catch (final SaslMechanism.AuthenticationException e) {
279 disconnect(true);
280 Log.e(Config.LOGTAG, String.valueOf(e));
281 }
282 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": logged in");
283 account.setKey(Account.PINNED_MECHANISM_KEY,
284 String.valueOf(saslMechanism.getPriority()));
285 tagReader.reset();
286 sendStartStream();
287 processStream(tagReader.readTag());
288 break;
289 } else if (nextTag.isStart("failure")) {
290 throw new UnauthorizedException();
291 } else if (nextTag.isStart("challenge")) {
292 final String challenge = tagReader.readElement(nextTag).getContent();
293 final Element response = new Element("response");
294 response.setAttribute("xmlns",
295 "urn:ietf:params:xml:ns:xmpp-sasl");
296 try {
297 response.setContent(saslMechanism.getResponse(challenge));
298 } catch (final SaslMechanism.AuthenticationException e) {
299 // TODO: Send auth abort tag.
300 Log.e(Config.LOGTAG, e.toString());
301 }
302 tagWriter.writeElement(response);
303 } else if (nextTag.isStart("enabled")) {
304 final Element enabled = tagReader.readElement(nextTag);
305 if ("true".equals(enabled.getAttribute("resume"))) {
306 this.streamId = enabled.getAttribute("id");
307 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
308 + ": stream managment(" + smVersion
309 + ") enabled (resumable)");
310 } else {
311 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
312 + ": stream management(" + smVersion + ") enabled");
313 }
314 this.stanzasReceived = 0;
315 final RequestPacket r = new RequestPacket(smVersion);
316 tagWriter.writeStanzaAsync(r);
317 } else if (nextTag.isStart("resumed")) {
318 lastPacketReceived = SystemClock.elapsedRealtime();
319 final Element resumed = tagReader.readElement(nextTag);
320 final String h = resumed.getAttribute("h");
321 try {
322 final int serverCount = Integer.parseInt(h);
323 if (serverCount != stanzasSent) {
324 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
325 + ": session resumed with lost packages");
326 stanzasSent = serverCount;
327 } else {
328 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": session resumed");
329 }
330 acknowledgeStanzaUpTo(serverCount);
331 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
332 for(int i = 0; i < this.mStanzaQueue.size(); ++i) {
333 failedStanzas.add(mStanzaQueue.valueAt(i));
334 }
335 mStanzaQueue.clear();
336 Log.d(Config.LOGTAG,"resending "+failedStanzas.size()+" stanzas");
337 for(AbstractAcknowledgeableStanza packet : failedStanzas) {
338 if (packet instanceof MessagePacket) {
339 MessagePacket message = (MessagePacket) packet;
340 mXmppConnectionService.markMessage(account,
341 message.getTo().toBareJid(),
342 message.getId(),
343 Message.STATUS_UNSEND);
344 }
345 sendPacket(packet);
346 }
347 } catch (final NumberFormatException ignored) {
348 }
349 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": online with resource " + account.getResource());
350 changeStatus(Account.State.ONLINE);
351 } else if (nextTag.isStart("r")) {
352 tagReader.readElement(nextTag);
353 if (Config.EXTENDED_SM_LOGGING) {
354 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
355 }
356 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
357 tagWriter.writeStanzaAsync(ack);
358 } else if (nextTag.isStart("a")) {
359 final Element ack = tagReader.readElement(nextTag);
360 lastPacketReceived = SystemClock.elapsedRealtime();
361 try {
362 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
363 acknowledgeStanzaUpTo(serverSequence);
364 } catch (NumberFormatException e) {
365 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": server send ack without sequence number");
366 }
367 } else if (nextTag.isStart("failed")) {
368 tagReader.readElement(nextTag);
369 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": resumption failed");
370 streamId = null;
371 if (account.getStatus() != Account.State.ONLINE) {
372 sendBindRequest();
373 }
374 } else if (nextTag.isStart("iq")) {
375 processIq(nextTag);
376 } else if (nextTag.isStart("message")) {
377 processMessage(nextTag);
378 } else if (nextTag.isStart("presence")) {
379 processPresence(nextTag);
380 }
381 nextTag = tagReader.readTag();
382 }
383 if (account.getStatus() == Account.State.ONLINE) {
384 account. setStatus(Account.State.OFFLINE);
385 if (statusListener != null) {
386 statusListener.onStatusChanged(account);
387 }
388 }
389 }
390
391 private void acknowledgeStanzaUpTo(int serverCount) {
392 for (int i = 0; i < mStanzaQueue.size(); ++i) {
393 if (serverCount >= mStanzaQueue.keyAt(i)) {
394 if (Config.EXTENDED_SM_LOGGING) {
395 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
396 }
397 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
398 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
399 MessagePacket packet = (MessagePacket) stanza;
400 acknowledgedListener.onMessageAcknowledged(account, packet.getId());
401 }
402 mStanzaQueue.removeAt(i);
403 i--;
404 }
405 }
406 }
407
408 private Element processPacket(final Tag currentTag, final int packetType)
409 throws XmlPullParserException, IOException {
410 Element element;
411 switch (packetType) {
412 case PACKET_IQ:
413 element = new IqPacket();
414 break;
415 case PACKET_MESSAGE:
416 element = new MessagePacket();
417 break;
418 case PACKET_PRESENCE:
419 element = new PresencePacket();
420 break;
421 default:
422 return null;
423 }
424 element.setAttributes(currentTag.getAttributes());
425 Tag nextTag = tagReader.readTag();
426 if (nextTag == null) {
427 throw new IOException("interrupted mid tag");
428 }
429 while (!nextTag.isEnd(element.getName())) {
430 if (!nextTag.isNo()) {
431 final Element child = tagReader.readElement(nextTag);
432 final String type = currentTag.getAttribute("type");
433 if (packetType == PACKET_IQ
434 && "jingle".equals(child.getName())
435 && ("set".equalsIgnoreCase(type) || "get"
436 .equalsIgnoreCase(type))) {
437 element = new JinglePacket();
438 element.setAttributes(currentTag.getAttributes());
439 }
440 element.addChild(child);
441 }
442 nextTag = tagReader.readTag();
443 if (nextTag == null) {
444 throw new IOException("interrupted mid tag");
445 }
446 }
447 if (stanzasReceived == Integer.MAX_VALUE) {
448 resetStreamId();
449 throw new IOException("time to restart the session. cant handle >2 billion pcks");
450 }
451 ++stanzasReceived;
452 lastPacketReceived = SystemClock.elapsedRealtime();
453 return element;
454 }
455
456 private void processIq(final Tag currentTag) throws XmlPullParserException, IOException {
457 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
458
459 if (packet.getId() == null) {
460 return; // an iq packet without id is definitely invalid
461 }
462
463 if (packet instanceof JinglePacket) {
464 if (this.jingleListener != null) {
465 this.jingleListener.onJinglePacketReceived(account,(JinglePacket) packet);
466 }
467 } else {
468 OnIqPacketReceived callback = null;
469 synchronized (this.packetCallbacks) {
470 if (packetCallbacks.containsKey(packet.getId())) {
471 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
472 // Packets to the server should have responses from the server
473 if (packetCallbackDuple.first.toServer(account)) {
474 if (packet.fromServer(account) || account.getJid().getDomainpart().equals("chat.facebook.com")) {
475 callback = packetCallbackDuple.second;
476 packetCallbacks.remove(packet.getId());
477 } else {
478 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
479 }
480 } else {
481 if (packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
482 callback = packetCallbackDuple.second;
483 packetCallbacks.remove(packet.getId());
484 } else {
485 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
486 }
487 }
488 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
489 callback = this.unregisteredIqListener;
490 }
491 }
492 if (callback != null) {
493 callback.onIqPacketReceived(account,packet);
494 }
495 }
496 }
497
498 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
499 final MessagePacket packet = (MessagePacket) processPacket(currentTag,PACKET_MESSAGE);
500 this.messageListener.onMessagePacketReceived(account, packet);
501 }
502
503 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
504 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
505 this.presenceListener.onPresencePacketReceived(account, packet);
506 }
507
508 private void sendStartTLS() throws IOException {
509 final Tag startTLS = Tag.empty("starttls");
510 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
511 tagWriter.writeTag(startTLS);
512 }
513
514 private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
515 tagReader.readTag();
516 try {
517 final SSLContext sc = SSLContext.getInstance("TLS");
518 sc.init(null,new X509TrustManager[]{this.mXmppConnectionService.getMemorizingTrustManager()},mXmppConnectionService.getRNG());
519 final SSLSocketFactory factory = sc.getSocketFactory();
520 final HostnameVerifier verifier = this.mXmppConnectionService.getMemorizingTrustManager().wrapHostnameVerifier(new StrictHostnameVerifier());
521 final InetAddress address = socket == null ? null : socket.getInetAddress();
522
523 if (factory == null || address == null || verifier == null) {
524 throw new IOException("could not setup ssl");
525 }
526
527 final SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,address.getHostAddress(), socket.getPort(),true);
528
529 if (sslSocket == null) {
530 throw new IOException("could not initialize ssl socket");
531 }
532
533 final String[] supportProtocols;
534 final Collection<String> supportedProtocols = new LinkedList<>(
535 Arrays.asList(sslSocket.getSupportedProtocols()));
536 supportedProtocols.remove("SSLv3");
537 supportProtocols = supportedProtocols.toArray(new String[supportedProtocols.size()]);
538
539 sslSocket.setEnabledProtocols(supportProtocols);
540
541 final String[] cipherSuites = CryptoHelper.getOrderedCipherSuites(
542 sslSocket.getSupportedCipherSuites());
543 //Log.d(Config.LOGTAG, "Using ciphers: " + Arrays.toString(cipherSuites));
544 if (cipherSuites.length > 0) {
545 sslSocket.setEnabledCipherSuites(cipherSuites);
546 }
547
548 if (!verifier.verify(account.getServer().getDomainpart(),sslSocket.getSession())) {
549 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": TLS certificate verification failed");
550 throw new SecurityException();
551 }
552 tagReader.setInputStream(sslSocket.getInputStream());
553 tagWriter.setOutputStream(sslSocket.getOutputStream());
554 sendStartStream();
555 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": TLS connection established");
556 features.encryptionEnabled = true;
557 processStream(tagReader.readTag());
558 sslSocket.close();
559 } catch (final NoSuchAlgorithmException | KeyManagementException e1) {
560 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": TLS certificate verification failed");
561 throw new SecurityException();
562 }
563 }
564
565 private void processStreamFeatures(final Tag currentTag)
566 throws XmlPullParserException, IOException {
567 this.streamFeatures = tagReader.readElement(currentTag);
568 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
569 sendStartTLS();
570 } else if (this.streamFeatures.hasChild("register")
571 && account.isOptionSet(Account.OPTION_REGISTER)
572 && features.encryptionEnabled) {
573 sendRegistryRequest();
574 } else if (!this.streamFeatures.hasChild("register")
575 && account.isOptionSet(Account.OPTION_REGISTER)) {
576 changeStatus(Account.State.REGISTRATION_NOT_SUPPORTED);
577 disconnect(true);
578 } else if (this.streamFeatures.hasChild("mechanisms")
579 && shouldAuthenticate && features.encryptionEnabled) {
580 final List<String> mechanisms = extractMechanisms(streamFeatures
581 .findChild("mechanisms"));
582 final Element auth = new Element("auth");
583 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
584 if (mechanisms.contains("SCRAM-SHA-1")) {
585 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
586 } else if (mechanisms.contains("PLAIN")) {
587 saslMechanism = new Plain(tagWriter, account);
588 } else if (mechanisms.contains("DIGEST-MD5")) {
589 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
590 }
591 if (saslMechanism != null) {
592 final JSONObject keys = account.getKeys();
593 try {
594 if (keys.has(Account.PINNED_MECHANISM_KEY) &&
595 keys.getInt(Account.PINNED_MECHANISM_KEY) > saslMechanism.getPriority()) {
596 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
597 " has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
598 ") than pinned priority (" + keys.getInt(Account.PINNED_MECHANISM_KEY) +
599 "). Possible downgrade attack?");
600 throw new SecurityException();
601 }
602 } catch (final JSONException e) {
603 Log.d(Config.LOGTAG, "Parse error while checking pinned auth mechanism");
604 }
605 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
606 auth.setAttribute("mechanism", saslMechanism.getMechanism());
607 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
608 auth.setContent(saslMechanism.getClientFirstMessage());
609 }
610 tagWriter.writeElement(auth);
611 } else {
612 throw new IncompatibleServerException();
613 }
614 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
615 if (Config.EXTENDED_SM_LOGGING) {
616 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": resuming after stanza #"+stanzasReceived);
617 }
618 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
619 this.tagWriter.writeStanzaAsync(resume);
620 } else if (needsBinding) {
621 if (this.streamFeatures.hasChild("bind")) {
622 sendBindRequest();
623 } else {
624 throw new IncompatibleServerException();
625 }
626 }
627 }
628
629 private List<String> extractMechanisms(final Element stream) {
630 final ArrayList<String> mechanisms = new ArrayList<>(stream
631 .getChildren().size());
632 for (final Element child : stream.getChildren()) {
633 mechanisms.add(child.getContent());
634 }
635 return mechanisms;
636 }
637
638 private void sendRegistryRequest() {
639 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
640 register.query("jabber:iq:register");
641 register.setTo(account.getServer());
642 sendIqPacket(register, new OnIqPacketReceived() {
643
644 @Override
645 public void onIqPacketReceived(final Account account, final IqPacket packet) {
646 if (packet.getType() == IqPacket.TYPE.RESULT
647 && packet.query().hasChild("username")
648 && (packet.query().hasChild("password"))) {
649 final IqPacket register = new IqPacket(IqPacket.TYPE.SET);
650 final Element username = new Element("username").setContent(account.getUsername());
651 final Element password = new Element("password").setContent(account.getPassword());
652 register.query("jabber:iq:register").addChild(username);
653 register.query().addChild(password);
654 sendIqPacket(register, new OnIqPacketReceived() {
655
656 @Override
657 public void onIqPacketReceived(final Account account, final IqPacket packet) {
658 if (packet.getType() == IqPacket.TYPE.RESULT) {
659 account.setOption(Account.OPTION_REGISTER,
660 false);
661 changeStatus(Account.State.REGISTRATION_SUCCESSFUL);
662 } else if (packet.hasChild("error")
663 && (packet.findChild("error")
664 .hasChild("conflict"))) {
665 changeStatus(Account.State.REGISTRATION_CONFLICT);
666 } else {
667 changeStatus(Account.State.REGISTRATION_FAILED);
668 Log.d(Config.LOGTAG, packet.toString());
669 }
670 disconnect(true);
671 }
672 });
673 } else {
674 final Element instructions = packet.query().findChild("instructions");
675 changeStatus(Account.State.REGISTRATION_FAILED);
676 disconnect(true);
677 Log.d(Config.LOGTAG, account.getJid().toBareJid()
678 + ": could not register. instructions are"
679 + (instructions != null ? instructions.getContent() : ""));
680 }
681 }
682 });
683 }
684
685 private void sendBindRequest() {
686 while(!mXmppConnectionService.areMessagesInitialized()) {
687 try {
688 Thread.sleep(500);
689 } catch (final InterruptedException ignored) {
690 }
691 }
692 needsBinding = false;
693 clearIqCallbacks();
694 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
695 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
696 .addChild("resource").setContent(account.getResource());
697 this.sendUnmodifiedIqPacket(iq, new OnIqPacketReceived() {
698 @Override
699 public void onIqPacketReceived(final Account account, final IqPacket packet) {
700 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
701 return;
702 }
703 final Element bind = packet.findChild("bind");
704 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
705 final Element jid = bind.findChild("jid");
706 if (jid != null && jid.getContent() != null) {
707 try {
708 account.setResource(Jid.fromString(jid.getContent()).getResourcepart());
709 } catch (final InvalidJidException e) {
710 // TODO: Handle the case where an external JID is technically invalid?
711 }
712 if (streamFeatures.hasChild("session")) {
713 sendStartSession();
714 } else {
715 sendPostBindInitialization();
716 }
717 } else {
718 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure");
719 disconnect(true);
720 }
721 } else {
722 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure");
723 disconnect(true);
724 }
725 }
726 });
727 }
728
729 private void clearIqCallbacks() {
730 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
731 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
732 synchronized (this.packetCallbacks) {
733 if (this.packetCallbacks.size() == 0) {
734 return;
735 }
736 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": clearing "+this.packetCallbacks.size()+" iq callbacks");
737 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
738 while (iterator.hasNext()) {
739 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
740 callbacks.add(entry.second);
741 iterator.remove();
742 }
743 }
744 for(OnIqPacketReceived callback : callbacks) {
745 callback.onIqPacketReceived(account,failurePacket);
746 }
747 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
748 }
749
750 private void sendStartSession() {
751 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
752 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
753 this.sendUnmodifiedIqPacket(startSession, new OnIqPacketReceived() {
754 @Override
755 public void onIqPacketReceived(Account account, IqPacket packet) {
756 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
757 return;
758 } else if (packet.getType() == IqPacket.TYPE.RESULT) {
759 sendPostBindInitialization();
760 } else {
761 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not init sessions");
762 disconnect(true);
763 }
764 }
765 });
766 }
767
768 private void sendPostBindInitialization() {
769 smVersion = 0;
770 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
771 smVersion = 3;
772 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
773 smVersion = 2;
774 }
775 if (smVersion != 0) {
776 final EnablePacket enable = new EnablePacket(smVersion);
777 tagWriter.writeStanzaAsync(enable);
778 stanzasSent = 0;
779 mStanzaQueue.clear();
780 }
781 features.carbonsEnabled = false;
782 features.blockListRequested = false;
783 disco.clear();
784 sendServiceDiscoveryInfo(account.getServer());
785 sendServiceDiscoveryInfo(account.getJid().toBareJid());
786 sendServiceDiscoveryItems(account.getServer());
787 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": online with resource " + account.getResource());
788 this.lastSessionStarted = SystemClock.elapsedRealtime();
789 changeStatus(Account.State.ONLINE);
790 if (bindListener != null) {
791 bindListener.onBind(account);
792 }
793 }
794
795 private void sendServiceDiscoveryInfo(final Jid jid) {
796 if (disco.containsKey(jid)) {
797 if (account.getServer().equals(jid)) {
798 enableAdvancedStreamFeatures();
799 }
800 } else {
801 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
802 iq.setTo(jid);
803 iq.query("http://jabber.org/protocol/disco#info");
804 this.sendIqPacket(iq, new OnIqPacketReceived() {
805
806 @Override
807 public void onIqPacketReceived(final Account account, final IqPacket packet) {
808 if (packet.getType() == IqPacket.TYPE.RESULT) {
809 final List<Element> elements = packet.query().getChildren();
810 final Info info = new Info();
811 for (final Element element : elements) {
812 if (element.getName().equals("identity")) {
813 String type = element.getAttribute("type");
814 String category = element.getAttribute("category");
815 if (type != null && category != null) {
816 info.identities.add(new Pair<>(category, type));
817 }
818 } else if (element.getName().equals("feature")) {
819 info.features.add(element.getAttribute("var"));
820 }
821 }
822 disco.put(jid, info);
823 if (account.getServer().equals(jid)) {
824 enableAdvancedStreamFeatures();
825 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
826 listener.onAdvancedStreamFeaturesAvailable(account);
827 }
828 }
829 } else {
830 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": could not query disco info for "+jid.toString());
831 }
832 }
833 });
834 }
835 }
836
837 private void enableAdvancedStreamFeatures() {
838 if (getFeatures().carbons() && !features.carbonsEnabled) {
839 sendEnableCarbons();
840 }
841 if (getFeatures().blocking() && !features.blockListRequested) {
842 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": Requesting block list");
843 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
844 }
845 }
846
847 private void sendServiceDiscoveryItems(final Jid server) {
848 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
849 iq.setTo(server.toDomainJid());
850 iq.query("http://jabber.org/protocol/disco#items");
851 this.sendIqPacket(iq, new OnIqPacketReceived() {
852
853 @Override
854 public void onIqPacketReceived(final Account account, final IqPacket packet) {
855 if (packet.getType() == IqPacket.TYPE.RESULT) {
856 final List<Element> elements = packet.query().getChildren();
857 for (final Element element : elements) {
858 if (element.getName().equals("item")) {
859 final Jid jid = element.getAttributeAsJid("jid");
860 if (jid != null && !jid.equals(account.getServer())) {
861 sendServiceDiscoveryInfo(jid);
862 }
863 }
864 }
865 } else {
866 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": could not query disco items of "+server);
867 }
868 }
869 });
870 }
871
872 private void sendEnableCarbons() {
873 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
874 iq.addChild("enable", "urn:xmpp:carbons:2");
875 this.sendIqPacket(iq, new OnIqPacketReceived() {
876
877 @Override
878 public void onIqPacketReceived(final Account account, final IqPacket packet) {
879 if (!packet.hasChild("error")) {
880 Log.d(Config.LOGTAG, account.getJid().toBareJid()
881 + ": successfully enabled carbons");
882 features.carbonsEnabled = true;
883 } else {
884 Log.d(Config.LOGTAG, account.getJid().toBareJid()
885 + ": error enableing carbons " + packet.toString());
886 }
887 }
888 });
889 }
890
891 private void processStreamError(final Tag currentTag)
892 throws XmlPullParserException, IOException {
893 final Element streamError = tagReader.readElement(currentTag);
894 if (streamError != null && streamError.hasChild("conflict")) {
895 final String resource = account.getResource().split("\\.")[0];
896 account.setResource(resource + "." + nextRandomId());
897 Log.d(Config.LOGTAG,
898 account.getJid().toBareJid() + ": switching resource due to conflict ("
899 + account.getResource() + ")");
900 } else if (streamError != null) {
901 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": stream error "+streamError.toString());
902 }
903 }
904
905 private void sendStartStream() throws IOException {
906 final Tag stream = Tag.start("stream:stream");
907 stream.setAttribute("to", account.getServer().toString());
908 stream.setAttribute("version", "1.0");
909 stream.setAttribute("xml:lang", "en");
910 stream.setAttribute("xmlns", "jabber:client");
911 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
912 tagWriter.writeTag(stream);
913 }
914
915 private String nextRandomId() {
916 return new BigInteger(50, mXmppConnectionService.getRNG()).toString(32);
917 }
918
919 public void sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
920 packet.setFrom(account.getJid());
921 this.sendUnmodifiedIqPacket(packet, callback);
922
923 }
924
925 private synchronized void sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
926 if (packet.getId() == null) {
927 final String id = nextRandomId();
928 packet.setAttribute("id", id);
929 }
930 if (callback != null) {
931 synchronized (this.packetCallbacks) {
932 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
933 }
934 }
935 this.sendPacket(packet);
936 }
937
938 public void sendMessagePacket(final MessagePacket packet) {
939 this.sendPacket(packet);
940 }
941
942 public void sendPresencePacket(final PresencePacket packet) {
943 this.sendPacket(packet);
944 }
945
946 private synchronized void sendPacket(final AbstractStanza packet) {
947 if (stanzasSent == Integer.MAX_VALUE) {
948 resetStreamId();
949 disconnect(true);
950 return;
951 }
952 final String name = packet.getName();
953 tagWriter.writeStanzaAsync(packet);
954 if (packet instanceof AbstractAcknowledgeableStanza) {
955 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
956 ++stanzasSent;
957 this.mStanzaQueue.put(stanzasSent, stanza);
958 if (stanza instanceof MessagePacket && stanza.getId() != null && getFeatures().sm()) {
959 if (Config.EXTENDED_SM_LOGGING) {
960 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": requesting ack for message stanza #" + stanzasSent);
961 }
962 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
963 }
964 }
965 }
966
967 public void sendPing() {
968 if (streamFeatures.hasChild("sm")) {
969 tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
970 } else {
971 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
972 iq.setFrom(account.getJid());
973 iq.addChild("ping", "urn:xmpp:ping");
974 this.sendIqPacket(iq, null);
975 }
976 this.lastPingSent = SystemClock.elapsedRealtime();
977 }
978
979 public void setOnMessagePacketReceivedListener(
980 final OnMessagePacketReceived listener) {
981 this.messageListener = listener;
982 }
983
984 public void setOnUnregisteredIqPacketReceivedListener(
985 final OnIqPacketReceived listener) {
986 this.unregisteredIqListener = listener;
987 }
988
989 public void setOnPresencePacketReceivedListener(
990 final OnPresencePacketReceived listener) {
991 this.presenceListener = listener;
992 }
993
994 public void setOnJinglePacketReceivedListener(
995 final OnJinglePacketReceived listener) {
996 this.jingleListener = listener;
997 }
998
999 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1000 this.statusListener = listener;
1001 }
1002
1003 public void setOnBindListener(final OnBindListener listener) {
1004 this.bindListener = listener;
1005 }
1006
1007 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1008 this.acknowledgedListener = listener;
1009 }
1010
1011 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1012 if (!this.advancedStreamFeaturesLoadedListeners.contains(listener)) {
1013 this.advancedStreamFeaturesLoadedListeners.add(listener);
1014 }
1015 }
1016
1017 public void disconnect(final boolean force) {
1018 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": disconnecting");
1019 try {
1020 if (force) {
1021 socket.close();
1022 return;
1023 }
1024 new Thread(new Runnable() {
1025
1026 @Override
1027 public void run() {
1028 if (tagWriter.isActive()) {
1029 tagWriter.finish();
1030 try {
1031 int i = 0;
1032 boolean warned = false;
1033 while (!tagWriter.finished() && socket.isConnected() && i <= 10) {
1034 if (!warned) {
1035 Log.d(Config.LOGTAG, account.getJid().toBareJid()+": waiting for tag writer to finish");
1036 warned = true;
1037 }
1038 Thread.sleep(200);
1039 i++;
1040 }
1041 if (warned) {
1042 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": tag writer has finished");
1043 }
1044 tagWriter.writeTag(Tag.end("stream:stream"));
1045 socket.close();
1046 } catch (final IOException e) {
1047 Log.d(Config.LOGTAG,"io exception during disconnect");
1048 } catch (final InterruptedException e) {
1049 Log.d(Config.LOGTAG, "interrupted");
1050 }
1051 }
1052 }
1053 }).start();
1054 } catch (final IOException e) {
1055 Log.d(Config.LOGTAG, "io exception during disconnect");
1056 }
1057 }
1058
1059 public void resetStreamId() {
1060 this.streamId = null;
1061 }
1062
1063 public List<Jid> findDiscoItemsByFeature(final String feature) {
1064 final List<Jid> items = new ArrayList<>();
1065 for (final Entry<Jid, Info> cursor : disco.entrySet()) {
1066 if (cursor.getValue().features.contains(feature)) {
1067 items.add(cursor.getKey());
1068 }
1069 }
1070 return items;
1071 }
1072
1073 public Jid findDiscoItemByFeature(final String feature) {
1074 final List<Jid> items = findDiscoItemsByFeature(feature);
1075 if (items.size() >= 1) {
1076 return items.get(0);
1077 }
1078 return null;
1079 }
1080
1081 public void r() {
1082 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1083 }
1084
1085 public String getMucServer() {
1086 for (final Entry<Jid, Info> cursor : disco.entrySet()) {
1087 final Info value = cursor.getValue();
1088 if (value.features.contains("http://jabber.org/protocol/muc")
1089 && !value.features.contains("jabber:iq:gateway")
1090 && !value.identities.contains(new Pair<>("conference","irc"))) {
1091 return cursor.getKey().toString();
1092 }
1093 }
1094 return null;
1095 }
1096
1097 public int getTimeToNextAttempt() {
1098 final int interval = (int) (25 * Math.pow(1.5, attempt));
1099 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1100 return interval - secondsSinceLast;
1101 }
1102
1103 public int getAttempt() {
1104 return this.attempt;
1105 }
1106
1107 public Features getFeatures() {
1108 return this.features;
1109 }
1110
1111 public long getLastSessionEstablished() {
1112 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1113 return System.currentTimeMillis() - diff;
1114 }
1115
1116 public long getLastConnect() {
1117 return this.lastConnect;
1118 }
1119
1120 public long getLastPingSent() {
1121 return this.lastPingSent;
1122 }
1123
1124 public long getLastPacketReceived() {
1125 return this.lastPacketReceived;
1126 }
1127
1128 public void sendActive() {
1129 this.sendPacket(new ActivePacket());
1130 }
1131
1132 public void sendInactive() {
1133 this.sendPacket(new InactivePacket());
1134 }
1135
1136 public void resetAttemptCount() {
1137 this.attempt = 0;
1138 this.lastConnect = 0;
1139 }
1140
1141 private class Info {
1142 public final ArrayList<String> features = new ArrayList<>();
1143 public final ArrayList<Pair<String,String>> identities = new ArrayList<>();
1144 }
1145
1146 private class UnauthorizedException extends IOException {
1147
1148 }
1149
1150 private class SecurityException extends IOException {
1151
1152 }
1153
1154 private class IncompatibleServerException extends IOException {
1155
1156 }
1157
1158 private class DnsTimeoutException extends IOException {
1159
1160 }
1161
1162 public class Features {
1163 XmppConnection connection;
1164 private boolean carbonsEnabled = false;
1165 private boolean encryptionEnabled = false;
1166 private boolean blockListRequested = false;
1167
1168 public Features(final XmppConnection connection) {
1169 this.connection = connection;
1170 }
1171
1172 private boolean hasDiscoFeature(final Jid server, final String feature) {
1173 return connection.disco.containsKey(server) &&
1174 connection.disco.get(server).features.contains(feature);
1175 }
1176
1177 public boolean carbons() {
1178 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
1179 }
1180
1181 public boolean blocking() {
1182 return hasDiscoFeature(account.getServer(), Xmlns.BLOCKING);
1183 }
1184
1185 public boolean register() {
1186 return hasDiscoFeature(account.getServer(), Xmlns.REGISTER);
1187 }
1188
1189 public boolean sm() {
1190 return streamId != null
1191 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1192 }
1193
1194 public boolean csi() {
1195 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1196 }
1197
1198 public boolean pep() {
1199 final Pair<String,String> needle = new Pair<>("pubsub","pep");
1200 Info info = disco.get(account.getServer());
1201 if (info != null && info.identities.contains(needle)) {
1202 return true;
1203 } else {
1204 info = disco.get(account.getJid().toBareJid());
1205 return info != null && info.identities.contains(needle);
1206 }
1207 }
1208
1209 public boolean mam() {
1210 if (hasDiscoFeature(account.getJid().toBareJid(), "urn:xmpp:mam:0")) {
1211 return true;
1212 } else {
1213 return hasDiscoFeature(account.getServer(), "urn:xmpp:mam:0");
1214 }
1215 }
1216
1217 public boolean advancedStreamFeaturesLoaded() {
1218 return disco.containsKey(account.getServer());
1219 }
1220
1221 public boolean rosterVersioning() {
1222 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1223 }
1224
1225 public void setBlockListRequested(boolean value) {
1226 this.blockListRequested = value;
1227 }
1228
1229 public boolean httpUpload() {
1230 return findDiscoItemsByFeature(Xmlns.HTTP_UPLOAD).size() > 0;
1231 }
1232 }
1233
1234 private IqGenerator getIqGenerator() {
1235 return mXmppConnectionService.getIqGenerator();
1236 }
1237}