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 if (result == null) {
164 throw new IOException("unhandled exception in DNS resolver");
165 }
166 final ArrayList<Parcelable> values = result.getParcelableArrayList("values");
167 if ("timeout".equals(result.getString("error"))) {
168 throw new DnsTimeoutException();
169 } else if (values != null) {
170 int i = 0;
171 boolean socketError = true;
172 while (socketError && values.size() > i) {
173 final Bundle namePort = (Bundle) values.get(i);
174 try {
175 String srvRecordServer;
176 try {
177 srvRecordServer = IDN.toASCII(namePort.getString("name"));
178 } catch (final IllegalArgumentException e) {
179 // TODO: Handle me?`
180 srvRecordServer = "";
181 }
182 final int srvRecordPort = namePort.getInt("port");
183 final String srvIpServer = namePort.getString("ip");
184 final InetSocketAddress addr;
185 if (srvIpServer != null) {
186 addr = new InetSocketAddress(srvIpServer, srvRecordPort);
187 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
188 + ": using values from dns " + srvRecordServer
189 + "[" + srvIpServer + "]:" + srvRecordPort);
190 } else {
191 addr = new InetSocketAddress(srvRecordServer, srvRecordPort);
192 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
193 + ": using values from dns "
194 + srvRecordServer + ":" + srvRecordPort);
195 }
196 socket = new Socket();
197 socket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
198 socketError = false;
199 } catch (final Throwable e) {
200 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
201 i++;
202 }
203 }
204 if (socketError) {
205 throw new UnknownHostException();
206 }
207 } else {
208 throw new IOException("unhandled exception in DNS resolver");
209 }
210 }
211 final OutputStream out = socket.getOutputStream();
212 tagWriter.setOutputStream(out);
213 final InputStream in = socket.getInputStream();
214 tagReader.setInputStream(in);
215 tagWriter.beginDocument();
216 sendStartStream();
217 Tag nextTag;
218 while ((nextTag = tagReader.readTag()) != null) {
219 if (nextTag.isStart("stream")) {
220 processStream(nextTag);
221 break;
222 } else {
223 throw new IOException("unknown tag on connect");
224 }
225 }
226 if (socket.isConnected()) {
227 socket.close();
228 }
229 } catch (final IncompatibleServerException e) {
230 this.changeStatus(Account.State.INCOMPATIBLE_SERVER);
231 } catch (final SecurityException e) {
232 this.changeStatus(Account.State.SECURITY_ERROR);
233 } catch (final UnauthorizedException e) {
234 this.changeStatus(Account.State.UNAUTHORIZED);
235 } catch (final UnknownHostException | ConnectException e) {
236 this.changeStatus(Account.State.SERVER_NOT_FOUND);
237 } catch (final DnsTimeoutException e) {
238 this.changeStatus(Account.State.DNS_TIMEOUT);
239 } catch (final IOException | XmlPullParserException | NoSuchAlgorithmException e) {
240 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
241 this.changeStatus(Account.State.OFFLINE);
242 this.attempt--; //don't count attempt when reconnecting instantly anyway
243 } finally {
244 if (socket != null) {
245 try {
246 socket.close();
247 } catch (IOException e) {
248
249 }
250 }
251 if (wakeLock.isHeld()) {
252 try {
253 wakeLock.release();
254 } catch (final RuntimeException ignored) {
255 }
256 }
257 }
258 }
259
260 @Override
261 public void run() {
262 try {
263 if (socket != null) {
264 socket.close();
265 }
266 } catch (final IOException ignored) {
267
268 }
269 connect();
270 }
271
272 private void processStream(final Tag currentTag) throws XmlPullParserException,
273 IOException, NoSuchAlgorithmException {
274 Tag nextTag = tagReader.readTag();
275
276 while ((nextTag != null) && (!nextTag.isEnd("stream"))) {
277 if (nextTag.isStart("error")) {
278 processStreamError(nextTag);
279 } else if (nextTag.isStart("features")) {
280 processStreamFeatures(nextTag);
281 } else if (nextTag.isStart("proceed")) {
282 switchOverToTls(nextTag);
283 } else if (nextTag.isStart("success")) {
284 final String challenge = tagReader.readElement(nextTag).getContent();
285 try {
286 saslMechanism.getResponse(challenge);
287 } catch (final SaslMechanism.AuthenticationException e) {
288 disconnect(true);
289 Log.e(Config.LOGTAG, String.valueOf(e));
290 }
291 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": logged in");
292 account.setKey(Account.PINNED_MECHANISM_KEY,
293 String.valueOf(saslMechanism.getPriority()));
294 tagReader.reset();
295 sendStartStream();
296 processStream(tagReader.readTag());
297 break;
298 } else if (nextTag.isStart("failure")) {
299 throw new UnauthorizedException();
300 } else if (nextTag.isStart("challenge")) {
301 final String challenge = tagReader.readElement(nextTag).getContent();
302 final Element response = new Element("response");
303 response.setAttribute("xmlns",
304 "urn:ietf:params:xml:ns:xmpp-sasl");
305 try {
306 response.setContent(saslMechanism.getResponse(challenge));
307 } catch (final SaslMechanism.AuthenticationException e) {
308 // TODO: Send auth abort tag.
309 Log.e(Config.LOGTAG, e.toString());
310 }
311 tagWriter.writeElement(response);
312 } else if (nextTag.isStart("enabled")) {
313 final Element enabled = tagReader.readElement(nextTag);
314 if ("true".equals(enabled.getAttribute("resume"))) {
315 this.streamId = enabled.getAttribute("id");
316 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
317 + ": stream managment(" + smVersion
318 + ") enabled (resumable)");
319 } else {
320 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
321 + ": stream management(" + smVersion + ") enabled");
322 }
323 this.stanzasReceived = 0;
324 final RequestPacket r = new RequestPacket(smVersion);
325 tagWriter.writeStanzaAsync(r);
326 } else if (nextTag.isStart("resumed")) {
327 lastPacketReceived = SystemClock.elapsedRealtime();
328 final Element resumed = tagReader.readElement(nextTag);
329 final String h = resumed.getAttribute("h");
330 try {
331 final int serverCount = Integer.parseInt(h);
332 if (serverCount != stanzasSent) {
333 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
334 + ": session resumed with lost packages");
335 stanzasSent = serverCount;
336 } else {
337 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": session resumed");
338 }
339 acknowledgeStanzaUpTo(serverCount);
340 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
341 for(int i = 0; i < this.mStanzaQueue.size(); ++i) {
342 failedStanzas.add(mStanzaQueue.valueAt(i));
343 }
344 mStanzaQueue.clear();
345 Log.d(Config.LOGTAG,"resending "+failedStanzas.size()+" stanzas");
346 for(AbstractAcknowledgeableStanza packet : failedStanzas) {
347 if (packet instanceof MessagePacket) {
348 MessagePacket message = (MessagePacket) packet;
349 mXmppConnectionService.markMessage(account,
350 message.getTo().toBareJid(),
351 message.getId(),
352 Message.STATUS_UNSEND);
353 }
354 sendPacket(packet);
355 }
356 } catch (final NumberFormatException ignored) {
357 }
358 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": online with resource " + account.getResource());
359 changeStatus(Account.State.ONLINE);
360 } else if (nextTag.isStart("r")) {
361 tagReader.readElement(nextTag);
362 if (Config.EXTENDED_SM_LOGGING) {
363 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
364 }
365 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
366 tagWriter.writeStanzaAsync(ack);
367 } else if (nextTag.isStart("a")) {
368 final Element ack = tagReader.readElement(nextTag);
369 lastPacketReceived = SystemClock.elapsedRealtime();
370 try {
371 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
372 acknowledgeStanzaUpTo(serverSequence);
373 } catch (NumberFormatException e) {
374 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": server send ack without sequence number");
375 }
376 } else if (nextTag.isStart("failed")) {
377 tagReader.readElement(nextTag);
378 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": resumption failed");
379 streamId = null;
380 if (account.getStatus() != Account.State.ONLINE) {
381 sendBindRequest();
382 }
383 } else if (nextTag.isStart("iq")) {
384 processIq(nextTag);
385 } else if (nextTag.isStart("message")) {
386 processMessage(nextTag);
387 } else if (nextTag.isStart("presence")) {
388 processPresence(nextTag);
389 }
390 nextTag = tagReader.readTag();
391 }
392 if (account.getStatus() == Account.State.ONLINE) {
393 account. setStatus(Account.State.OFFLINE);
394 if (statusListener != null) {
395 statusListener.onStatusChanged(account);
396 }
397 }
398 }
399
400 private void acknowledgeStanzaUpTo(int serverCount) {
401 for (int i = 0; i < mStanzaQueue.size(); ++i) {
402 if (serverCount >= mStanzaQueue.keyAt(i)) {
403 if (Config.EXTENDED_SM_LOGGING) {
404 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
405 }
406 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
407 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
408 MessagePacket packet = (MessagePacket) stanza;
409 acknowledgedListener.onMessageAcknowledged(account, packet.getId());
410 }
411 mStanzaQueue.removeAt(i);
412 i--;
413 }
414 }
415 }
416
417 private Element processPacket(final Tag currentTag, final int packetType)
418 throws XmlPullParserException, IOException {
419 Element element;
420 switch (packetType) {
421 case PACKET_IQ:
422 element = new IqPacket();
423 break;
424 case PACKET_MESSAGE:
425 element = new MessagePacket();
426 break;
427 case PACKET_PRESENCE:
428 element = new PresencePacket();
429 break;
430 default:
431 return null;
432 }
433 element.setAttributes(currentTag.getAttributes());
434 Tag nextTag = tagReader.readTag();
435 if (nextTag == null) {
436 throw new IOException("interrupted mid tag");
437 }
438 while (!nextTag.isEnd(element.getName())) {
439 if (!nextTag.isNo()) {
440 final Element child = tagReader.readElement(nextTag);
441 final String type = currentTag.getAttribute("type");
442 if (packetType == PACKET_IQ
443 && "jingle".equals(child.getName())
444 && ("set".equalsIgnoreCase(type) || "get"
445 .equalsIgnoreCase(type))) {
446 element = new JinglePacket();
447 element.setAttributes(currentTag.getAttributes());
448 }
449 element.addChild(child);
450 }
451 nextTag = tagReader.readTag();
452 if (nextTag == null) {
453 throw new IOException("interrupted mid tag");
454 }
455 }
456 if (stanzasReceived == Integer.MAX_VALUE) {
457 resetStreamId();
458 throw new IOException("time to restart the session. cant handle >2 billion pcks");
459 }
460 ++stanzasReceived;
461 lastPacketReceived = SystemClock.elapsedRealtime();
462 return element;
463 }
464
465 private void processIq(final Tag currentTag) throws XmlPullParserException, IOException {
466 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
467
468 if (packet.getId() == null) {
469 return; // an iq packet without id is definitely invalid
470 }
471
472 if (packet instanceof JinglePacket) {
473 if (this.jingleListener != null) {
474 this.jingleListener.onJinglePacketReceived(account,(JinglePacket) packet);
475 }
476 } else {
477 OnIqPacketReceived callback = null;
478 synchronized (this.packetCallbacks) {
479 if (packetCallbacks.containsKey(packet.getId())) {
480 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
481 // Packets to the server should have responses from the server
482 if (packetCallbackDuple.first.toServer(account)) {
483 if (packet.fromServer(account)) {
484 callback = packetCallbackDuple.second;
485 packetCallbacks.remove(packet.getId());
486 } else {
487 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
488 }
489 } else {
490 if (packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
491 callback = packetCallbackDuple.second;
492 packetCallbacks.remove(packet.getId());
493 } else {
494 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
495 }
496 }
497 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
498 callback = this.unregisteredIqListener;
499 }
500 }
501 if (callback != null) {
502 callback.onIqPacketReceived(account,packet);
503 }
504 }
505 }
506
507 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
508 final MessagePacket packet = (MessagePacket) processPacket(currentTag,PACKET_MESSAGE);
509 this.messageListener.onMessagePacketReceived(account, packet);
510 }
511
512 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
513 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
514 this.presenceListener.onPresencePacketReceived(account, packet);
515 }
516
517 private void sendStartTLS() throws IOException {
518 final Tag startTLS = Tag.empty("starttls");
519 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
520 tagWriter.writeTag(startTLS);
521 }
522
523 private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
524 tagReader.readTag();
525 try {
526 final SSLContext sc = SSLContext.getInstance("TLS");
527 sc.init(null,new X509TrustManager[]{this.mXmppConnectionService.getMemorizingTrustManager()},mXmppConnectionService.getRNG());
528 final SSLSocketFactory factory = sc.getSocketFactory();
529 final HostnameVerifier verifier = this.mXmppConnectionService.getMemorizingTrustManager().wrapHostnameVerifier(new StrictHostnameVerifier());
530 final InetAddress address = socket == null ? null : socket.getInetAddress();
531
532 if (factory == null || address == null || verifier == null) {
533 throw new IOException("could not setup ssl");
534 }
535
536 final SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,address.getHostAddress(), socket.getPort(),true);
537
538 if (sslSocket == null) {
539 throw new IOException("could not initialize ssl socket");
540 }
541
542 final String[] supportProtocols;
543 final Collection<String> supportedProtocols = new LinkedList<>(
544 Arrays.asList(sslSocket.getSupportedProtocols()));
545 supportedProtocols.remove("SSLv3");
546 supportProtocols = supportedProtocols.toArray(new String[supportedProtocols.size()]);
547
548 sslSocket.setEnabledProtocols(supportProtocols);
549
550 final String[] cipherSuites = CryptoHelper.getOrderedCipherSuites(
551 sslSocket.getSupportedCipherSuites());
552 //Log.d(Config.LOGTAG, "Using ciphers: " + Arrays.toString(cipherSuites));
553 if (cipherSuites.length > 0) {
554 sslSocket.setEnabledCipherSuites(cipherSuites);
555 }
556
557 if (!verifier.verify(account.getServer().getDomainpart(),sslSocket.getSession())) {
558 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": TLS certificate verification failed");
559 throw new SecurityException();
560 }
561 tagReader.setInputStream(sslSocket.getInputStream());
562 tagWriter.setOutputStream(sslSocket.getOutputStream());
563 sendStartStream();
564 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": TLS connection established");
565 features.encryptionEnabled = true;
566 processStream(tagReader.readTag());
567 sslSocket.close();
568 } catch (final NoSuchAlgorithmException | KeyManagementException e1) {
569 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": TLS certificate verification failed");
570 throw new SecurityException();
571 }
572 }
573
574 private void processStreamFeatures(final Tag currentTag)
575 throws XmlPullParserException, IOException {
576 this.streamFeatures = tagReader.readElement(currentTag);
577 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
578 sendStartTLS();
579 } else if (this.streamFeatures.hasChild("register")
580 && account.isOptionSet(Account.OPTION_REGISTER)
581 && features.encryptionEnabled) {
582 sendRegistryRequest();
583 } else if (!this.streamFeatures.hasChild("register")
584 && account.isOptionSet(Account.OPTION_REGISTER)) {
585 changeStatus(Account.State.REGISTRATION_NOT_SUPPORTED);
586 disconnect(true);
587 } else if (this.streamFeatures.hasChild("mechanisms")
588 && shouldAuthenticate && features.encryptionEnabled) {
589 final List<String> mechanisms = extractMechanisms(streamFeatures
590 .findChild("mechanisms"));
591 final Element auth = new Element("auth");
592 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
593 if (mechanisms.contains("SCRAM-SHA-1")) {
594 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
595 } else if (mechanisms.contains("PLAIN")) {
596 saslMechanism = new Plain(tagWriter, account);
597 } else if (mechanisms.contains("DIGEST-MD5")) {
598 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
599 }
600 if (saslMechanism != null) {
601 final JSONObject keys = account.getKeys();
602 try {
603 if (keys.has(Account.PINNED_MECHANISM_KEY) &&
604 keys.getInt(Account.PINNED_MECHANISM_KEY) > saslMechanism.getPriority()) {
605 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
606 " has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
607 ") than pinned priority (" + keys.getInt(Account.PINNED_MECHANISM_KEY) +
608 "). Possible downgrade attack?");
609 throw new SecurityException();
610 }
611 } catch (final JSONException e) {
612 Log.d(Config.LOGTAG, "Parse error while checking pinned auth mechanism");
613 }
614 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
615 auth.setAttribute("mechanism", saslMechanism.getMechanism());
616 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
617 auth.setContent(saslMechanism.getClientFirstMessage());
618 }
619 tagWriter.writeElement(auth);
620 } else {
621 throw new IncompatibleServerException();
622 }
623 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
624 if (Config.EXTENDED_SM_LOGGING) {
625 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": resuming after stanza #"+stanzasReceived);
626 }
627 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
628 this.tagWriter.writeStanzaAsync(resume);
629 } else if (needsBinding) {
630 if (this.streamFeatures.hasChild("bind")) {
631 sendBindRequest();
632 } else {
633 throw new IncompatibleServerException();
634 }
635 }
636 }
637
638 private List<String> extractMechanisms(final Element stream) {
639 final ArrayList<String> mechanisms = new ArrayList<>(stream
640 .getChildren().size());
641 for (final Element child : stream.getChildren()) {
642 mechanisms.add(child.getContent());
643 }
644 return mechanisms;
645 }
646
647 private void sendRegistryRequest() {
648 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
649 register.query("jabber:iq:register");
650 register.setTo(account.getServer());
651 sendIqPacket(register, new OnIqPacketReceived() {
652
653 @Override
654 public void onIqPacketReceived(final Account account, final IqPacket packet) {
655 if (packet.getType() == IqPacket.TYPE.RESULT
656 && packet.query().hasChild("username")
657 && (packet.query().hasChild("password"))) {
658 final IqPacket register = new IqPacket(IqPacket.TYPE.SET);
659 final Element username = new Element("username").setContent(account.getUsername());
660 final Element password = new Element("password").setContent(account.getPassword());
661 register.query("jabber:iq:register").addChild(username);
662 register.query().addChild(password);
663 sendIqPacket(register, new OnIqPacketReceived() {
664
665 @Override
666 public void onIqPacketReceived(final Account account, final IqPacket packet) {
667 if (packet.getType() == IqPacket.TYPE.RESULT) {
668 account.setOption(Account.OPTION_REGISTER,
669 false);
670 changeStatus(Account.State.REGISTRATION_SUCCESSFUL);
671 } else if (packet.hasChild("error")
672 && (packet.findChild("error")
673 .hasChild("conflict"))) {
674 changeStatus(Account.State.REGISTRATION_CONFLICT);
675 } else {
676 changeStatus(Account.State.REGISTRATION_FAILED);
677 Log.d(Config.LOGTAG, packet.toString());
678 }
679 disconnect(true);
680 }
681 });
682 } else {
683 final Element instructions = packet.query().findChild("instructions");
684 changeStatus(Account.State.REGISTRATION_FAILED);
685 disconnect(true);
686 Log.d(Config.LOGTAG, account.getJid().toBareJid()
687 + ": could not register. instructions are"
688 + (instructions != null ? instructions.getContent() : ""));
689 }
690 }
691 });
692 }
693
694 private void sendBindRequest() {
695 while(!mXmppConnectionService.areMessagesInitialized()) {
696 try {
697 Thread.sleep(500);
698 } catch (final InterruptedException ignored) {
699 }
700 }
701 needsBinding = false;
702 clearIqCallbacks();
703 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
704 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
705 .addChild("resource").setContent(account.getResource());
706 this.sendUnmodifiedIqPacket(iq, new OnIqPacketReceived() {
707 @Override
708 public void onIqPacketReceived(final Account account, final IqPacket packet) {
709 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
710 return;
711 }
712 final Element bind = packet.findChild("bind");
713 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
714 final Element jid = bind.findChild("jid");
715 if (jid != null && jid.getContent() != null) {
716 try {
717 account.setResource(Jid.fromString(jid.getContent()).getResourcepart());
718 } catch (final InvalidJidException e) {
719 // TODO: Handle the case where an external JID is technically invalid?
720 }
721 if (streamFeatures.hasChild("session")) {
722 sendStartSession();
723 } else {
724 sendPostBindInitialization();
725 }
726 } else {
727 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure");
728 disconnect(true);
729 }
730 } else {
731 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure");
732 disconnect(true);
733 }
734 }
735 });
736 }
737
738 private void clearIqCallbacks() {
739 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
740 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
741 synchronized (this.packetCallbacks) {
742 if (this.packetCallbacks.size() == 0) {
743 return;
744 }
745 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": clearing "+this.packetCallbacks.size()+" iq callbacks");
746 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
747 while (iterator.hasNext()) {
748 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
749 callbacks.add(entry.second);
750 iterator.remove();
751 }
752 }
753 for(OnIqPacketReceived callback : callbacks) {
754 callback.onIqPacketReceived(account,failurePacket);
755 }
756 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
757 }
758
759 private void sendStartSession() {
760 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
761 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
762 this.sendUnmodifiedIqPacket(startSession, new OnIqPacketReceived() {
763 @Override
764 public void onIqPacketReceived(Account account, IqPacket packet) {
765 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
766 return;
767 } else if (packet.getType() == IqPacket.TYPE.RESULT) {
768 sendPostBindInitialization();
769 } else {
770 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not init sessions");
771 disconnect(true);
772 }
773 }
774 });
775 }
776
777 private void sendPostBindInitialization() {
778 smVersion = 0;
779 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
780 smVersion = 3;
781 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
782 smVersion = 2;
783 }
784 if (smVersion != 0) {
785 final EnablePacket enable = new EnablePacket(smVersion);
786 tagWriter.writeStanzaAsync(enable);
787 stanzasSent = 0;
788 mStanzaQueue.clear();
789 }
790 features.carbonsEnabled = false;
791 features.blockListRequested = false;
792 disco.clear();
793 sendServiceDiscoveryInfo(account.getServer());
794 sendServiceDiscoveryInfo(account.getJid().toBareJid());
795 sendServiceDiscoveryItems(account.getServer());
796 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": online with resource " + account.getResource());
797 this.lastSessionStarted = SystemClock.elapsedRealtime();
798 changeStatus(Account.State.ONLINE);
799 if (bindListener != null) {
800 bindListener.onBind(account);
801 }
802 }
803
804 private void sendServiceDiscoveryInfo(final Jid jid) {
805 if (disco.containsKey(jid)) {
806 if (account.getServer().equals(jid)) {
807 enableAdvancedStreamFeatures();
808 }
809 } else {
810 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
811 iq.setTo(jid);
812 iq.query("http://jabber.org/protocol/disco#info");
813 this.sendIqPacket(iq, new OnIqPacketReceived() {
814
815 @Override
816 public void onIqPacketReceived(final Account account, final IqPacket packet) {
817 if (packet.getType() == IqPacket.TYPE.RESULT) {
818 final List<Element> elements = packet.query().getChildren();
819 final Info info = new Info();
820 for (final Element element : elements) {
821 if (element.getName().equals("identity")) {
822 String type = element.getAttribute("type");
823 String category = element.getAttribute("category");
824 if (type != null && category != null) {
825 info.identities.add(new Pair<>(category, type));
826 }
827 } else if (element.getName().equals("feature")) {
828 info.features.add(element.getAttribute("var"));
829 }
830 }
831 disco.put(jid, info);
832 if (account.getServer().equals(jid)) {
833 enableAdvancedStreamFeatures();
834 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
835 listener.onAdvancedStreamFeaturesAvailable(account);
836 }
837 }
838 } else {
839 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": could not query disco info for "+jid.toString());
840 }
841 }
842 });
843 }
844 }
845
846 private void enableAdvancedStreamFeatures() {
847 if (getFeatures().carbons() && !features.carbonsEnabled) {
848 sendEnableCarbons();
849 }
850 if (getFeatures().blocking() && !features.blockListRequested) {
851 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": Requesting block list");
852 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
853 }
854 }
855
856 private void sendServiceDiscoveryItems(final Jid server) {
857 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
858 iq.setTo(server.toDomainJid());
859 iq.query("http://jabber.org/protocol/disco#items");
860 this.sendIqPacket(iq, new OnIqPacketReceived() {
861
862 @Override
863 public void onIqPacketReceived(final Account account, final IqPacket packet) {
864 if (packet.getType() == IqPacket.TYPE.RESULT) {
865 final List<Element> elements = packet.query().getChildren();
866 for (final Element element : elements) {
867 if (element.getName().equals("item")) {
868 final Jid jid = element.getAttributeAsJid("jid");
869 if (jid != null && !jid.equals(account.getServer())) {
870 sendServiceDiscoveryInfo(jid);
871 }
872 }
873 }
874 } else {
875 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": could not query disco items of "+server);
876 }
877 }
878 });
879 }
880
881 private void sendEnableCarbons() {
882 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
883 iq.addChild("enable", "urn:xmpp:carbons:2");
884 this.sendIqPacket(iq, new OnIqPacketReceived() {
885
886 @Override
887 public void onIqPacketReceived(final Account account, final IqPacket packet) {
888 if (!packet.hasChild("error")) {
889 Log.d(Config.LOGTAG, account.getJid().toBareJid()
890 + ": successfully enabled carbons");
891 features.carbonsEnabled = true;
892 } else {
893 Log.d(Config.LOGTAG, account.getJid().toBareJid()
894 + ": error enableing carbons " + packet.toString());
895 }
896 }
897 });
898 }
899
900 private void processStreamError(final Tag currentTag)
901 throws XmlPullParserException, IOException {
902 final Element streamError = tagReader.readElement(currentTag);
903 if (streamError != null && streamError.hasChild("conflict")) {
904 final String resource = account.getResource().split("\\.")[0];
905 account.setResource(resource + "." + nextRandomId());
906 Log.d(Config.LOGTAG,
907 account.getJid().toBareJid() + ": switching resource due to conflict ("
908 + account.getResource() + ")");
909 } else if (streamError != null) {
910 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": stream error "+streamError.toString());
911 }
912 }
913
914 private void sendStartStream() throws IOException {
915 final Tag stream = Tag.start("stream:stream");
916 stream.setAttribute("from", account.getJid().toBareJid().toString());
917 stream.setAttribute("to", account.getServer().toString());
918 stream.setAttribute("version", "1.0");
919 stream.setAttribute("xml:lang", "en");
920 stream.setAttribute("xmlns", "jabber:client");
921 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
922 tagWriter.writeTag(stream);
923 }
924
925 private String nextRandomId() {
926 return new BigInteger(50, mXmppConnectionService.getRNG()).toString(32);
927 }
928
929 public void sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
930 packet.setFrom(account.getJid());
931 this.sendUnmodifiedIqPacket(packet, callback);
932
933 }
934
935 private synchronized void sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
936 if (packet.getId() == null) {
937 final String id = nextRandomId();
938 packet.setAttribute("id", id);
939 }
940 if (callback != null) {
941 synchronized (this.packetCallbacks) {
942 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
943 }
944 }
945 this.sendPacket(packet);
946 }
947
948 public void sendMessagePacket(final MessagePacket packet) {
949 this.sendPacket(packet);
950 }
951
952 public void sendPresencePacket(final PresencePacket packet) {
953 this.sendPacket(packet);
954 }
955
956 private synchronized void sendPacket(final AbstractStanza packet) {
957 if (stanzasSent == Integer.MAX_VALUE) {
958 resetStreamId();
959 disconnect(true);
960 return;
961 }
962 final String name = packet.getName();
963 tagWriter.writeStanzaAsync(packet);
964 if (packet instanceof AbstractAcknowledgeableStanza) {
965 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
966 ++stanzasSent;
967 this.mStanzaQueue.put(stanzasSent, stanza);
968 if (stanza instanceof MessagePacket && stanza.getId() != null && getFeatures().sm()) {
969 if (Config.EXTENDED_SM_LOGGING) {
970 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": requesting ack for message stanza #" + stanzasSent);
971 }
972 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
973 }
974 }
975 }
976
977 public void sendPing() {
978 if (streamFeatures.hasChild("sm")) {
979 tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
980 } else {
981 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
982 iq.setFrom(account.getJid());
983 iq.addChild("ping", "urn:xmpp:ping");
984 this.sendIqPacket(iq, null);
985 }
986 this.lastPingSent = SystemClock.elapsedRealtime();
987 }
988
989 public void setOnMessagePacketReceivedListener(
990 final OnMessagePacketReceived listener) {
991 this.messageListener = listener;
992 }
993
994 public void setOnUnregisteredIqPacketReceivedListener(
995 final OnIqPacketReceived listener) {
996 this.unregisteredIqListener = listener;
997 }
998
999 public void setOnPresencePacketReceivedListener(
1000 final OnPresencePacketReceived listener) {
1001 this.presenceListener = listener;
1002 }
1003
1004 public void setOnJinglePacketReceivedListener(
1005 final OnJinglePacketReceived listener) {
1006 this.jingleListener = listener;
1007 }
1008
1009 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1010 this.statusListener = listener;
1011 }
1012
1013 public void setOnBindListener(final OnBindListener listener) {
1014 this.bindListener = listener;
1015 }
1016
1017 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1018 this.acknowledgedListener = listener;
1019 }
1020
1021 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1022 if (!this.advancedStreamFeaturesLoadedListeners.contains(listener)) {
1023 this.advancedStreamFeaturesLoadedListeners.add(listener);
1024 }
1025 }
1026
1027 public void disconnect(final boolean force) {
1028 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": disconnecting");
1029 try {
1030 if (force) {
1031 socket.close();
1032 return;
1033 }
1034 new Thread(new Runnable() {
1035
1036 @Override
1037 public void run() {
1038 if (tagWriter.isActive()) {
1039 tagWriter.finish();
1040 try {
1041 int i = 0;
1042 boolean warned = false;
1043 while (!tagWriter.finished() && socket.isConnected() && i <= 10) {
1044 if (!warned) {
1045 Log.d(Config.LOGTAG, account.getJid().toBareJid()+": waiting for tag writer to finish");
1046 warned = true;
1047 }
1048 Thread.sleep(200);
1049 i++;
1050 }
1051 if (warned) {
1052 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": tag writer has finished");
1053 }
1054 tagWriter.writeTag(Tag.end("stream:stream"));
1055 socket.close();
1056 } catch (final IOException e) {
1057 Log.d(Config.LOGTAG,"io exception during disconnect");
1058 } catch (final InterruptedException e) {
1059 Log.d(Config.LOGTAG, "interrupted");
1060 }
1061 }
1062 }
1063 }).start();
1064 } catch (final IOException e) {
1065 Log.d(Config.LOGTAG, "io exception during disconnect");
1066 }
1067 }
1068
1069 public void resetStreamId() {
1070 this.streamId = null;
1071 }
1072
1073 public List<Jid> findDiscoItemsByFeature(final String feature) {
1074 final List<Jid> items = new ArrayList<>();
1075 for (final Entry<Jid, Info> cursor : disco.entrySet()) {
1076 if (cursor.getValue().features.contains(feature)) {
1077 items.add(cursor.getKey());
1078 }
1079 }
1080 return items;
1081 }
1082
1083 public Jid findDiscoItemByFeature(final String feature) {
1084 final List<Jid> items = findDiscoItemsByFeature(feature);
1085 if (items.size() >= 1) {
1086 return items.get(0);
1087 }
1088 return null;
1089 }
1090
1091 public void r() {
1092 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1093 }
1094
1095 public String getMucServer() {
1096 for (final Entry<Jid, Info> cursor : disco.entrySet()) {
1097 final Info value = cursor.getValue();
1098 if (value.features.contains("http://jabber.org/protocol/muc")
1099 && !value.features.contains("jabber:iq:gateway")
1100 && !value.identities.contains(new Pair<>("conference","irc"))) {
1101 return cursor.getKey().toString();
1102 }
1103 }
1104 return null;
1105 }
1106
1107 public int getTimeToNextAttempt() {
1108 final int interval = (int) (25 * Math.pow(1.5, attempt));
1109 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1110 return interval - secondsSinceLast;
1111 }
1112
1113 public int getAttempt() {
1114 return this.attempt;
1115 }
1116
1117 public Features getFeatures() {
1118 return this.features;
1119 }
1120
1121 public long getLastSessionEstablished() {
1122 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1123 return System.currentTimeMillis() - diff;
1124 }
1125
1126 public long getLastConnect() {
1127 return this.lastConnect;
1128 }
1129
1130 public long getLastPingSent() {
1131 return this.lastPingSent;
1132 }
1133
1134 public long getLastPacketReceived() {
1135 return this.lastPacketReceived;
1136 }
1137
1138 public void sendActive() {
1139 this.sendPacket(new ActivePacket());
1140 }
1141
1142 public void sendInactive() {
1143 this.sendPacket(new InactivePacket());
1144 }
1145
1146 public void resetAttemptCount() {
1147 this.attempt = 0;
1148 this.lastConnect = 0;
1149 }
1150
1151 private class Info {
1152 public final ArrayList<String> features = new ArrayList<>();
1153 public final ArrayList<Pair<String,String>> identities = new ArrayList<>();
1154 }
1155
1156 private class UnauthorizedException extends IOException {
1157
1158 }
1159
1160 private class SecurityException extends IOException {
1161
1162 }
1163
1164 private class IncompatibleServerException extends IOException {
1165
1166 }
1167
1168 private class DnsTimeoutException extends IOException {
1169
1170 }
1171
1172 public class Features {
1173 XmppConnection connection;
1174 private boolean carbonsEnabled = false;
1175 private boolean encryptionEnabled = false;
1176 private boolean blockListRequested = false;
1177
1178 public Features(final XmppConnection connection) {
1179 this.connection = connection;
1180 }
1181
1182 private boolean hasDiscoFeature(final Jid server, final String feature) {
1183 return connection.disco.containsKey(server) &&
1184 connection.disco.get(server).features.contains(feature);
1185 }
1186
1187 public boolean carbons() {
1188 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
1189 }
1190
1191 public boolean blocking() {
1192 return hasDiscoFeature(account.getServer(), Xmlns.BLOCKING);
1193 }
1194
1195 public boolean register() {
1196 return hasDiscoFeature(account.getServer(), Xmlns.REGISTER);
1197 }
1198
1199 public boolean sm() {
1200 return streamId != null
1201 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1202 }
1203
1204 public boolean csi() {
1205 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1206 }
1207
1208 public boolean pep() {
1209 final Pair<String,String> needle = new Pair<>("pubsub","pep");
1210 Info info = disco.get(account.getServer());
1211 if (info != null && info.identities.contains(needle)) {
1212 return true;
1213 } else {
1214 info = disco.get(account.getJid().toBareJid());
1215 return info != null && info.identities.contains(needle);
1216 }
1217 }
1218
1219 public boolean mam() {
1220 if (hasDiscoFeature(account.getJid().toBareJid(), "urn:xmpp:mam:0")) {
1221 return true;
1222 } else {
1223 return hasDiscoFeature(account.getServer(), "urn:xmpp:mam:0");
1224 }
1225 }
1226
1227 public boolean advancedStreamFeaturesLoaded() {
1228 return disco.containsKey(account.getServer());
1229 }
1230
1231 public boolean rosterVersioning() {
1232 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1233 }
1234
1235 public void setBlockListRequested(boolean value) {
1236 this.blockListRequested = value;
1237 }
1238
1239 public boolean httpUpload() {
1240 return findDiscoItemsByFeature(Xmlns.HTTP_UPLOAD).size() > 0;
1241 }
1242 }
1243
1244 private IqGenerator getIqGenerator() {
1245 return mXmppConnectionService.getIqGenerator();
1246 }
1247}