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 de.duenndns.ssl.MemorizingTrustManager;
46import eu.siacs.conversations.Config;
47import eu.siacs.conversations.crypto.sasl.DigestMd5;
48import eu.siacs.conversations.crypto.sasl.Plain;
49import eu.siacs.conversations.crypto.sasl.SaslMechanism;
50import eu.siacs.conversations.crypto.sasl.ScramSha1;
51import eu.siacs.conversations.entities.Account;
52import eu.siacs.conversations.entities.Message;
53import eu.siacs.conversations.generator.IqGenerator;
54import eu.siacs.conversations.services.XmppConnectionService;
55import eu.siacs.conversations.utils.CryptoHelper;
56import eu.siacs.conversations.utils.DNSHelper;
57import eu.siacs.conversations.utils.Xmlns;
58import eu.siacs.conversations.xml.Element;
59import eu.siacs.conversations.xml.Tag;
60import eu.siacs.conversations.xml.TagWriter;
61import eu.siacs.conversations.xml.XmlReader;
62import eu.siacs.conversations.xmpp.jid.InvalidJidException;
63import eu.siacs.conversations.xmpp.jid.Jid;
64import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
65import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
66import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
67import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
68import eu.siacs.conversations.xmpp.stanzas.IqPacket;
69import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
70import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
71import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
72import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
73import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
74import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
75import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
76import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
77
78public class XmppConnection implements Runnable {
79
80 private static final int PACKET_IQ = 0;
81 private static final int PACKET_MESSAGE = 1;
82 private static final int PACKET_PRESENCE = 2;
83 protected Account account;
84 private final WakeLock wakeLock;
85 private Socket socket;
86 private XmlReader tagReader;
87 private TagWriter tagWriter;
88 private final Features features = new Features(this);
89 private boolean needsBinding = true;
90 private boolean shouldAuthenticate = true;
91 private Element streamFeatures;
92 private final HashMap<Jid, Info> disco = new HashMap<>();
93
94 private String streamId = null;
95 private int smVersion = 3;
96 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
97
98 private int stanzasReceived = 0;
99 private int stanzasSent = 0;
100 private long lastPacketReceived = 0;
101 private long lastPingSent = 0;
102 private long lastConnect = 0;
103 private long lastSessionStarted = 0;
104 private boolean mInteractive = false;
105 private int attempt = 0;
106 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
107 private OnPresencePacketReceived presenceListener = null;
108 private OnJinglePacketReceived jingleListener = null;
109 private OnIqPacketReceived unregisteredIqListener = null;
110 private OnMessagePacketReceived messageListener = null;
111 private OnStatusChanged statusListener = null;
112 private OnBindListener bindListener = null;
113 private final ArrayList<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new ArrayList<>();
114 private OnMessageAcknowledged acknowledgedListener = null;
115 private XmppConnectionService mXmppConnectionService = null;
116
117 private SaslMechanism saslMechanism;
118
119 public XmppConnection(final Account account, final XmppConnectionService service) {
120 this.account = account;
121 this.wakeLock = service.getPowerManager().newWakeLock(
122 PowerManager.PARTIAL_WAKE_LOCK, account.getJid().toBareJid().toString());
123 tagWriter = new TagWriter();
124 mXmppConnectionService = service;
125 }
126
127 protected void changeStatus(final Account.State nextStatus) {
128 if (account.getStatus() != nextStatus) {
129 if ((nextStatus == Account.State.OFFLINE)
130 && (account.getStatus() != Account.State.CONNECTING)
131 && (account.getStatus() != Account.State.ONLINE)
132 && (account.getStatus() != Account.State.DISABLED)) {
133 return;
134 }
135 if (nextStatus == Account.State.ONLINE) {
136 this.attempt = 0;
137 }
138 account.setStatus(nextStatus);
139 if (statusListener != null) {
140 statusListener.onStatusChanged(account);
141 }
142 }
143 }
144
145 protected void connect() {
146 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": connecting");
147 features.encryptionEnabled = false;
148 lastConnect = SystemClock.elapsedRealtime();
149 lastPingSent = SystemClock.elapsedRealtime();
150 this.attempt++;
151 try {
152 shouldAuthenticate = needsBinding = !account.isOptionSet(Account.OPTION_REGISTER);
153 tagReader = new XmlReader(wakeLock);
154 tagWriter = new TagWriter();
155 this.changeStatus(Account.State.CONNECTING);
156 if (DNSHelper.isIp(account.getServer().toString())) {
157 socket = new Socket();
158 try {
159 socket.connect(new InetSocketAddress(account.getServer().toString(), 5222), Config.SOCKET_TIMEOUT * 1000);
160 } catch (IOException e) {
161 throw new UnknownHostException();
162 }
163 } else {
164 final Bundle result = DNSHelper.getSRVRecord(account.getServer(),mXmppConnectionService);
165 final ArrayList<Parcelable> values = result.getParcelableArrayList("values");
166 int i = 0;
167 boolean socketError = true;
168 while (socketError && values.size() > i) {
169 final Bundle namePort = (Bundle) values.get(i);
170 try {
171 String srvRecordServer;
172 try {
173 srvRecordServer = IDN.toASCII(namePort.getString("name"));
174 } catch (final IllegalArgumentException e) {
175 // TODO: Handle me?`
176 srvRecordServer = "";
177 }
178 final int srvRecordPort = namePort.getInt("port");
179 final String srvIpServer = namePort.getString("ip");
180 final InetSocketAddress addr;
181 if (srvIpServer != null) {
182 addr = new InetSocketAddress(srvIpServer, srvRecordPort);
183 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
184 + ": using values from dns " + srvRecordServer
185 + "[" + srvIpServer + "]:" + srvRecordPort);
186 } else {
187 addr = new InetSocketAddress(srvRecordServer, srvRecordPort);
188 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
189 + ": using values from dns "
190 + srvRecordServer + ":" + srvRecordPort);
191 }
192 socket = new Socket();
193 socket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
194 socketError = false;
195 } catch (final Throwable e) {
196 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
197 i++;
198 }
199 }
200 if (socketError) {
201 throw new UnknownHostException();
202 }
203 }
204 final OutputStream out = socket.getOutputStream();
205 tagWriter.setOutputStream(out);
206 final InputStream in = socket.getInputStream();
207 tagReader.setInputStream(in);
208 tagWriter.beginDocument();
209 sendStartStream();
210 Tag nextTag;
211 while ((nextTag = tagReader.readTag()) != null) {
212 if (nextTag.isStart("stream")) {
213 processStream(nextTag);
214 break;
215 } else {
216 throw new IOException("unknown tag on connect");
217 }
218 }
219 if (socket.isConnected()) {
220 socket.close();
221 }
222 } catch (final IncompatibleServerException e) {
223 this.changeStatus(Account.State.INCOMPATIBLE_SERVER);
224 } catch (final SecurityException e) {
225 this.changeStatus(Account.State.SECURITY_ERROR);
226 } catch (final UnauthorizedException e) {
227 this.changeStatus(Account.State.UNAUTHORIZED);
228 } catch (final UnknownHostException | ConnectException e) {
229 this.changeStatus(Account.State.SERVER_NOT_FOUND);
230 } catch (final DnsTimeoutException e) {
231 this.changeStatus(Account.State.DNS_TIMEOUT);
232 } catch (final IOException | XmlPullParserException | NoSuchAlgorithmException e) {
233 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
234 this.changeStatus(Account.State.OFFLINE);
235 this.attempt--; //don't count attempt when reconnecting instantly anyway
236 } finally {
237 if (socket != null) {
238 try {
239 socket.close();
240 } catch (IOException e) {
241
242 }
243 }
244 if (wakeLock.isHeld()) {
245 try {
246 wakeLock.release();
247 } catch (final RuntimeException ignored) {
248 }
249 }
250 }
251 }
252
253 @Override
254 public void run() {
255 try {
256 if (socket != null) {
257 socket.close();
258 }
259 } catch (final IOException ignored) {
260
261 }
262 connect();
263 }
264
265 private void processStream(final Tag currentTag) throws XmlPullParserException,
266 IOException, NoSuchAlgorithmException {
267 Tag nextTag = tagReader.readTag();
268
269 while ((nextTag != null) && (!nextTag.isEnd("stream"))) {
270 if (nextTag.isStart("error")) {
271 processStreamError(nextTag);
272 } else if (nextTag.isStart("features")) {
273 processStreamFeatures(nextTag);
274 } else if (nextTag.isStart("proceed")) {
275 switchOverToTls(nextTag);
276 } else if (nextTag.isStart("success")) {
277 final String challenge = tagReader.readElement(nextTag).getContent();
278 try {
279 saslMechanism.getResponse(challenge);
280 } catch (final SaslMechanism.AuthenticationException e) {
281 disconnect(true);
282 Log.e(Config.LOGTAG, String.valueOf(e));
283 }
284 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": logged in");
285 account.setKey(Account.PINNED_MECHANISM_KEY,
286 String.valueOf(saslMechanism.getPriority()));
287 tagReader.reset();
288 sendStartStream();
289 processStream(tagReader.readTag());
290 break;
291 } else if (nextTag.isStart("failure")) {
292 throw new UnauthorizedException();
293 } else if (nextTag.isStart("challenge")) {
294 final String challenge = tagReader.readElement(nextTag).getContent();
295 final Element response = new Element("response");
296 response.setAttribute("xmlns",
297 "urn:ietf:params:xml:ns:xmpp-sasl");
298 try {
299 response.setContent(saslMechanism.getResponse(challenge));
300 } catch (final SaslMechanism.AuthenticationException e) {
301 // TODO: Send auth abort tag.
302 Log.e(Config.LOGTAG, e.toString());
303 }
304 tagWriter.writeElement(response);
305 } else if (nextTag.isStart("enabled")) {
306 final Element enabled = tagReader.readElement(nextTag);
307 if ("true".equals(enabled.getAttribute("resume"))) {
308 this.streamId = enabled.getAttribute("id");
309 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
310 + ": stream managment(" + smVersion
311 + ") enabled (resumable)");
312 } else {
313 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
314 + ": stream management(" + smVersion + ") enabled");
315 }
316 this.stanzasReceived = 0;
317 final RequestPacket r = new RequestPacket(smVersion);
318 tagWriter.writeStanzaAsync(r);
319 } else if (nextTag.isStart("resumed")) {
320 lastPacketReceived = SystemClock.elapsedRealtime();
321 final Element resumed = tagReader.readElement(nextTag);
322 final String h = resumed.getAttribute("h");
323 try {
324 final int serverCount = Integer.parseInt(h);
325 if (serverCount != stanzasSent) {
326 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
327 + ": session resumed with lost packages");
328 stanzasSent = serverCount;
329 } else {
330 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": session resumed");
331 }
332 acknowledgeStanzaUpTo(serverCount);
333 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
334 for(int i = 0; i < this.mStanzaQueue.size(); ++i) {
335 failedStanzas.add(mStanzaQueue.valueAt(i));
336 }
337 mStanzaQueue.clear();
338 Log.d(Config.LOGTAG,"resending "+failedStanzas.size()+" stanzas");
339 for(AbstractAcknowledgeableStanza packet : failedStanzas) {
340 if (packet instanceof MessagePacket) {
341 MessagePacket message = (MessagePacket) packet;
342 mXmppConnectionService.markMessage(account,
343 message.getTo().toBareJid(),
344 message.getId(),
345 Message.STATUS_UNSEND);
346 }
347 sendPacket(packet);
348 }
349 } catch (final NumberFormatException ignored) {
350 }
351 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": online with resource " + account.getResource());
352 changeStatus(Account.State.ONLINE);
353 } else if (nextTag.isStart("r")) {
354 tagReader.readElement(nextTag);
355 if (Config.EXTENDED_SM_LOGGING) {
356 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
357 }
358 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
359 tagWriter.writeStanzaAsync(ack);
360 } else if (nextTag.isStart("a")) {
361 final Element ack = tagReader.readElement(nextTag);
362 lastPacketReceived = SystemClock.elapsedRealtime();
363 try {
364 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
365 acknowledgeStanzaUpTo(serverSequence);
366 } catch (NumberFormatException e) {
367 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": server send ack without sequence number");
368 }
369 } else if (nextTag.isStart("failed")) {
370 tagReader.readElement(nextTag);
371 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": resumption failed");
372 streamId = null;
373 if (account.getStatus() != Account.State.ONLINE) {
374 sendBindRequest();
375 }
376 } else if (nextTag.isStart("iq")) {
377 processIq(nextTag);
378 } else if (nextTag.isStart("message")) {
379 processMessage(nextTag);
380 } else if (nextTag.isStart("presence")) {
381 processPresence(nextTag);
382 }
383 nextTag = tagReader.readTag();
384 }
385 if (account.getStatus() == Account.State.ONLINE) {
386 account. setStatus(Account.State.OFFLINE);
387 if (statusListener != null) {
388 statusListener.onStatusChanged(account);
389 }
390 }
391 }
392
393 private void acknowledgeStanzaUpTo(int serverCount) {
394 for (int i = 0; i < mStanzaQueue.size(); ++i) {
395 if (serverCount >= mStanzaQueue.keyAt(i)) {
396 if (Config.EXTENDED_SM_LOGGING) {
397 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
398 }
399 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
400 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
401 MessagePacket packet = (MessagePacket) stanza;
402 acknowledgedListener.onMessageAcknowledged(account, packet.getId());
403 }
404 mStanzaQueue.removeAt(i);
405 i--;
406 }
407 }
408 }
409
410 private Element processPacket(final Tag currentTag, final int packetType)
411 throws XmlPullParserException, IOException {
412 Element element;
413 switch (packetType) {
414 case PACKET_IQ:
415 element = new IqPacket();
416 break;
417 case PACKET_MESSAGE:
418 element = new MessagePacket();
419 break;
420 case PACKET_PRESENCE:
421 element = new PresencePacket();
422 break;
423 default:
424 return null;
425 }
426 element.setAttributes(currentTag.getAttributes());
427 Tag nextTag = tagReader.readTag();
428 if (nextTag == null) {
429 throw new IOException("interrupted mid tag");
430 }
431 while (!nextTag.isEnd(element.getName())) {
432 if (!nextTag.isNo()) {
433 final Element child = tagReader.readElement(nextTag);
434 final String type = currentTag.getAttribute("type");
435 if (packetType == PACKET_IQ
436 && "jingle".equals(child.getName())
437 && ("set".equalsIgnoreCase(type) || "get"
438 .equalsIgnoreCase(type))) {
439 element = new JinglePacket();
440 element.setAttributes(currentTag.getAttributes());
441 }
442 element.addChild(child);
443 }
444 nextTag = tagReader.readTag();
445 if (nextTag == null) {
446 throw new IOException("interrupted mid tag");
447 }
448 }
449 if (stanzasReceived == Integer.MAX_VALUE) {
450 resetStreamId();
451 throw new IOException("time to restart the session. cant handle >2 billion pcks");
452 }
453 ++stanzasReceived;
454 lastPacketReceived = SystemClock.elapsedRealtime();
455 return element;
456 }
457
458 private void processIq(final Tag currentTag) throws XmlPullParserException, IOException {
459 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
460
461 if (packet.getId() == null) {
462 return; // an iq packet without id is definitely invalid
463 }
464
465 if (packet instanceof JinglePacket) {
466 if (this.jingleListener != null) {
467 this.jingleListener.onJinglePacketReceived(account,(JinglePacket) packet);
468 }
469 } else {
470 OnIqPacketReceived callback = null;
471 synchronized (this.packetCallbacks) {
472 if (packetCallbacks.containsKey(packet.getId())) {
473 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
474 // Packets to the server should have responses from the server
475 if (packetCallbackDuple.first.toServer(account)) {
476 if (packet.fromServer(account) || account.getJid().getDomainpart().equals("chat.facebook.com")) {
477 callback = packetCallbackDuple.second;
478 packetCallbacks.remove(packet.getId());
479 } else {
480 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
481 }
482 } else {
483 if (packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
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 }
490 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
491 callback = this.unregisteredIqListener;
492 }
493 }
494 if (callback != null) {
495 callback.onIqPacketReceived(account,packet);
496 }
497 }
498 }
499
500 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
501 final MessagePacket packet = (MessagePacket) processPacket(currentTag,PACKET_MESSAGE);
502 this.messageListener.onMessagePacketReceived(account, packet);
503 }
504
505 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
506 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
507 this.presenceListener.onPresencePacketReceived(account, packet);
508 }
509
510 private void sendStartTLS() throws IOException {
511 final Tag startTLS = Tag.empty("starttls");
512 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
513 tagWriter.writeTag(startTLS);
514 }
515
516 private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
517 tagReader.readTag();
518 try {
519 final SSLContext sc = SSLContext.getInstance("TLS");
520 MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
521 sc.init(null,new X509TrustManager[]{mInteractive ? trustManager : trustManager.getNonInteractive()},mXmppConnectionService.getRNG());
522 final SSLSocketFactory factory = sc.getSocketFactory();
523 final HostnameVerifier verifier;
524 if (mInteractive) {
525 verifier = trustManager.wrapHostnameVerifier(new StrictHostnameVerifier());
526 } else {
527 verifier = trustManager.wrapHostnameVerifierNonInteractive(new StrictHostnameVerifier());
528 }
529 final InetAddress address = socket == null ? null : socket.getInetAddress();
530
531 if (factory == null || address == null || verifier == null) {
532 throw new IOException("could not setup ssl");
533 }
534
535 final SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,address.getHostAddress(), socket.getPort(),true);
536
537 if (sslSocket == null) {
538 throw new IOException("could not initialize ssl socket");
539 }
540
541 final String[] supportProtocols;
542 final Collection<String> supportedProtocols = new LinkedList<>(
543 Arrays.asList(sslSocket.getSupportedProtocols()));
544 supportedProtocols.remove("SSLv3");
545 supportProtocols = supportedProtocols.toArray(new String[supportedProtocols.size()]);
546
547 sslSocket.setEnabledProtocols(supportProtocols);
548
549 final String[] cipherSuites = CryptoHelper.getOrderedCipherSuites(
550 sslSocket.getSupportedCipherSuites());
551 //Log.d(Config.LOGTAG, "Using ciphers: " + Arrays.toString(cipherSuites));
552 if (cipherSuites.length > 0) {
553 sslSocket.setEnabledCipherSuites(cipherSuites);
554 }
555
556 if (!verifier.verify(account.getServer().getDomainpart(),sslSocket.getSession())) {
557 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": TLS certificate verification failed");
558 throw new SecurityException();
559 }
560 tagReader.setInputStream(sslSocket.getInputStream());
561 tagWriter.setOutputStream(sslSocket.getOutputStream());
562 sendStartStream();
563 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": TLS connection established");
564 features.encryptionEnabled = true;
565 processStream(tagReader.readTag());
566 sslSocket.close();
567 } catch (final NoSuchAlgorithmException | KeyManagementException e1) {
568 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": TLS certificate verification failed");
569 throw new SecurityException();
570 }
571 }
572
573 private void processStreamFeatures(final Tag currentTag)
574 throws XmlPullParserException, IOException {
575 this.streamFeatures = tagReader.readElement(currentTag);
576 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
577 sendStartTLS();
578 } else if (this.streamFeatures.hasChild("register")
579 && account.isOptionSet(Account.OPTION_REGISTER)
580 && features.encryptionEnabled) {
581 sendRegistryRequest();
582 } else if (!this.streamFeatures.hasChild("register")
583 && account.isOptionSet(Account.OPTION_REGISTER)) {
584 changeStatus(Account.State.REGISTRATION_NOT_SUPPORTED);
585 disconnect(true);
586 } else if (this.streamFeatures.hasChild("mechanisms")
587 && shouldAuthenticate && features.encryptionEnabled) {
588 final List<String> mechanisms = extractMechanisms(streamFeatures
589 .findChild("mechanisms"));
590 final Element auth = new Element("auth");
591 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
592 if (mechanisms.contains("SCRAM-SHA-1")) {
593 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
594 } else if (mechanisms.contains("PLAIN")) {
595 saslMechanism = new Plain(tagWriter, account);
596 } else if (mechanisms.contains("DIGEST-MD5")) {
597 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
598 }
599 if (saslMechanism != null) {
600 final JSONObject keys = account.getKeys();
601 try {
602 if (keys.has(Account.PINNED_MECHANISM_KEY) &&
603 keys.getInt(Account.PINNED_MECHANISM_KEY) > saslMechanism.getPriority()) {
604 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
605 " has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
606 ") than pinned priority (" + keys.getInt(Account.PINNED_MECHANISM_KEY) +
607 "). Possible downgrade attack?");
608 throw new SecurityException();
609 }
610 } catch (final JSONException e) {
611 Log.d(Config.LOGTAG, "Parse error while checking pinned auth mechanism");
612 }
613 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
614 auth.setAttribute("mechanism", saslMechanism.getMechanism());
615 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
616 auth.setContent(saslMechanism.getClientFirstMessage());
617 }
618 tagWriter.writeElement(auth);
619 } else {
620 throw new IncompatibleServerException();
621 }
622 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
623 if (Config.EXTENDED_SM_LOGGING) {
624 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": resuming after stanza #"+stanzasReceived);
625 }
626 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
627 this.tagWriter.writeStanzaAsync(resume);
628 } else if (needsBinding) {
629 if (this.streamFeatures.hasChild("bind")) {
630 sendBindRequest();
631 } else {
632 throw new IncompatibleServerException();
633 }
634 }
635 }
636
637 private List<String> extractMechanisms(final Element stream) {
638 final ArrayList<String> mechanisms = new ArrayList<>(stream
639 .getChildren().size());
640 for (final Element child : stream.getChildren()) {
641 mechanisms.add(child.getContent());
642 }
643 return mechanisms;
644 }
645
646 private void sendRegistryRequest() {
647 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
648 register.query("jabber:iq:register");
649 register.setTo(account.getServer());
650 sendIqPacket(register, new OnIqPacketReceived() {
651
652 @Override
653 public void onIqPacketReceived(final Account account, final IqPacket packet) {
654 if (packet.getType() == IqPacket.TYPE.RESULT
655 && packet.query().hasChild("username")
656 && (packet.query().hasChild("password"))) {
657 final IqPacket register = new IqPacket(IqPacket.TYPE.SET);
658 final Element username = new Element("username").setContent(account.getUsername());
659 final Element password = new Element("password").setContent(account.getPassword());
660 register.query("jabber:iq:register").addChild(username);
661 register.query().addChild(password);
662 sendIqPacket(register, new OnIqPacketReceived() {
663
664 @Override
665 public void onIqPacketReceived(final Account account, final IqPacket packet) {
666 if (packet.getType() == IqPacket.TYPE.RESULT) {
667 account.setOption(Account.OPTION_REGISTER,
668 false);
669 changeStatus(Account.State.REGISTRATION_SUCCESSFUL);
670 } else if (packet.hasChild("error")
671 && (packet.findChild("error")
672 .hasChild("conflict"))) {
673 changeStatus(Account.State.REGISTRATION_CONFLICT);
674 } else {
675 changeStatus(Account.State.REGISTRATION_FAILED);
676 Log.d(Config.LOGTAG, packet.toString());
677 }
678 disconnect(true);
679 }
680 });
681 } else {
682 final Element instructions = packet.query().findChild("instructions");
683 changeStatus(Account.State.REGISTRATION_FAILED);
684 disconnect(true);
685 Log.d(Config.LOGTAG, account.getJid().toBareJid()
686 + ": could not register. instructions are"
687 + (instructions != null ? instructions.getContent() : ""));
688 }
689 }
690 });
691 }
692
693 private void sendBindRequest() {
694 while(!mXmppConnectionService.areMessagesInitialized()) {
695 try {
696 Thread.sleep(500);
697 } catch (final InterruptedException ignored) {
698 }
699 }
700 needsBinding = false;
701 clearIqCallbacks();
702 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
703 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
704 .addChild("resource").setContent(account.getResource());
705 this.sendUnmodifiedIqPacket(iq, new OnIqPacketReceived() {
706 @Override
707 public void onIqPacketReceived(final Account account, final IqPacket packet) {
708 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
709 return;
710 }
711 final Element bind = packet.findChild("bind");
712 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
713 final Element jid = bind.findChild("jid");
714 if (jid != null && jid.getContent() != null) {
715 try {
716 account.setResource(Jid.fromString(jid.getContent()).getResourcepart());
717 } catch (final InvalidJidException e) {
718 // TODO: Handle the case where an external JID is technically invalid?
719 }
720 if (streamFeatures.hasChild("session")) {
721 sendStartSession();
722 } else {
723 sendPostBindInitialization();
724 }
725 } else {
726 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure");
727 disconnect(true);
728 }
729 } else {
730 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure");
731 disconnect(true);
732 }
733 }
734 });
735 }
736
737 private void clearIqCallbacks() {
738 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
739 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
740 synchronized (this.packetCallbacks) {
741 if (this.packetCallbacks.size() == 0) {
742 return;
743 }
744 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": clearing "+this.packetCallbacks.size()+" iq callbacks");
745 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
746 while (iterator.hasNext()) {
747 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
748 callbacks.add(entry.second);
749 iterator.remove();
750 }
751 }
752 for(OnIqPacketReceived callback : callbacks) {
753 callback.onIqPacketReceived(account,failurePacket);
754 }
755 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
756 }
757
758 private void sendStartSession() {
759 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
760 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
761 this.sendUnmodifiedIqPacket(startSession, new OnIqPacketReceived() {
762 @Override
763 public void onIqPacketReceived(Account account, IqPacket packet) {
764 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
765 return;
766 } else if (packet.getType() == IqPacket.TYPE.RESULT) {
767 sendPostBindInitialization();
768 } else {
769 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not init sessions");
770 disconnect(true);
771 }
772 }
773 });
774 }
775
776 private void sendPostBindInitialization() {
777 smVersion = 0;
778 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
779 smVersion = 3;
780 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
781 smVersion = 2;
782 }
783 if (smVersion != 0) {
784 final EnablePacket enable = new EnablePacket(smVersion);
785 tagWriter.writeStanzaAsync(enable);
786 stanzasSent = 0;
787 mStanzaQueue.clear();
788 }
789 features.carbonsEnabled = false;
790 features.blockListRequested = false;
791 disco.clear();
792 sendServiceDiscoveryInfo(account.getServer());
793 sendServiceDiscoveryInfo(account.getJid().toBareJid());
794 sendServiceDiscoveryItems(account.getServer());
795 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": online with resource " + account.getResource());
796 this.lastSessionStarted = SystemClock.elapsedRealtime();
797 changeStatus(Account.State.ONLINE);
798 if (bindListener != null) {
799 bindListener.onBind(account);
800 }
801 }
802
803 private void sendServiceDiscoveryInfo(final Jid jid) {
804 if (disco.containsKey(jid)) {
805 if (account.getServer().equals(jid)) {
806 enableAdvancedStreamFeatures();
807 }
808 } else {
809 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
810 iq.setTo(jid);
811 iq.query("http://jabber.org/protocol/disco#info");
812 this.sendIqPacket(iq, new OnIqPacketReceived() {
813
814 @Override
815 public void onIqPacketReceived(final Account account, final IqPacket packet) {
816 if (packet.getType() == IqPacket.TYPE.RESULT) {
817 final List<Element> elements = packet.query().getChildren();
818 final Info info = new Info();
819 for (final Element element : elements) {
820 if (element.getName().equals("identity")) {
821 String type = element.getAttribute("type");
822 String category = element.getAttribute("category");
823 if (type != null && category != null) {
824 info.identities.add(new Pair<>(category, type));
825 }
826 } else if (element.getName().equals("feature")) {
827 info.features.add(element.getAttribute("var"));
828 }
829 }
830 disco.put(jid, info);
831 if (account.getServer().equals(jid)) {
832 enableAdvancedStreamFeatures();
833 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
834 listener.onAdvancedStreamFeaturesAvailable(account);
835 }
836 }
837 } else {
838 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": could not query disco info for "+jid.toString());
839 }
840 }
841 });
842 }
843 }
844
845 private void enableAdvancedStreamFeatures() {
846 if (getFeatures().carbons() && !features.carbonsEnabled) {
847 sendEnableCarbons();
848 }
849 if (getFeatures().blocking() && !features.blockListRequested) {
850 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": Requesting block list");
851 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
852 }
853 }
854
855 private void sendServiceDiscoveryItems(final Jid server) {
856 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
857 iq.setTo(server.toDomainJid());
858 iq.query("http://jabber.org/protocol/disco#items");
859 this.sendIqPacket(iq, new OnIqPacketReceived() {
860
861 @Override
862 public void onIqPacketReceived(final Account account, final IqPacket packet) {
863 if (packet.getType() == IqPacket.TYPE.RESULT) {
864 final List<Element> elements = packet.query().getChildren();
865 for (final Element element : elements) {
866 if (element.getName().equals("item")) {
867 final Jid jid = element.getAttributeAsJid("jid");
868 if (jid != null && !jid.equals(account.getServer())) {
869 sendServiceDiscoveryInfo(jid);
870 }
871 }
872 }
873 } else {
874 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": could not query disco items of "+server);
875 }
876 }
877 });
878 }
879
880 private void sendEnableCarbons() {
881 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
882 iq.addChild("enable", "urn:xmpp:carbons:2");
883 this.sendIqPacket(iq, new OnIqPacketReceived() {
884
885 @Override
886 public void onIqPacketReceived(final Account account, final IqPacket packet) {
887 if (!packet.hasChild("error")) {
888 Log.d(Config.LOGTAG, account.getJid().toBareJid()
889 + ": successfully enabled carbons");
890 features.carbonsEnabled = true;
891 } else {
892 Log.d(Config.LOGTAG, account.getJid().toBareJid()
893 + ": error enableing carbons " + packet.toString());
894 }
895 }
896 });
897 }
898
899 private void processStreamError(final Tag currentTag)
900 throws XmlPullParserException, IOException {
901 final Element streamError = tagReader.readElement(currentTag);
902 if (streamError != null && streamError.hasChild("conflict")) {
903 final String resource = account.getResource().split("\\.")[0];
904 account.setResource(resource + "." + nextRandomId());
905 Log.d(Config.LOGTAG,
906 account.getJid().toBareJid() + ": switching resource due to conflict ("
907 + account.getResource() + ")");
908 } else if (streamError != null) {
909 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": stream error "+streamError.toString());
910 }
911 }
912
913 private void sendStartStream() throws IOException {
914 final Tag stream = Tag.start("stream:stream");
915 stream.setAttribute("to", account.getServer().toString());
916 stream.setAttribute("version", "1.0");
917 stream.setAttribute("xml:lang", "en");
918 stream.setAttribute("xmlns", "jabber:client");
919 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
920 tagWriter.writeTag(stream);
921 }
922
923 private String nextRandomId() {
924 return new BigInteger(50, mXmppConnectionService.getRNG()).toString(32);
925 }
926
927 public void sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
928 packet.setFrom(account.getJid());
929 this.sendUnmodifiedIqPacket(packet, callback);
930
931 }
932
933 private synchronized void sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
934 if (packet.getId() == null) {
935 final String id = nextRandomId();
936 packet.setAttribute("id", id);
937 }
938 if (callback != null) {
939 synchronized (this.packetCallbacks) {
940 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
941 }
942 }
943 this.sendPacket(packet);
944 }
945
946 public void sendMessagePacket(final MessagePacket packet) {
947 this.sendPacket(packet);
948 }
949
950 public void sendPresencePacket(final PresencePacket packet) {
951 this.sendPacket(packet);
952 }
953
954 private synchronized void sendPacket(final AbstractStanza packet) {
955 if (stanzasSent == Integer.MAX_VALUE) {
956 resetStreamId();
957 disconnect(true);
958 return;
959 }
960 tagWriter.writeStanzaAsync(packet);
961 if (packet instanceof AbstractAcknowledgeableStanza) {
962 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
963 ++stanzasSent;
964 this.mStanzaQueue.put(stanzasSent, stanza);
965 if (stanza instanceof MessagePacket && stanza.getId() != null && getFeatures().sm()) {
966 if (Config.EXTENDED_SM_LOGGING) {
967 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": requesting ack for message stanza #" + stanzasSent);
968 }
969 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
970 }
971 }
972 }
973
974 public void sendPing() {
975 if (!r()) {
976 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
977 iq.setFrom(account.getJid());
978 iq.addChild("ping", "urn:xmpp:ping");
979 this.sendIqPacket(iq, null);
980 }
981 this.lastPingSent = SystemClock.elapsedRealtime();
982 }
983
984 public void setOnMessagePacketReceivedListener(
985 final OnMessagePacketReceived listener) {
986 this.messageListener = listener;
987 }
988
989 public void setOnUnregisteredIqPacketReceivedListener(
990 final OnIqPacketReceived listener) {
991 this.unregisteredIqListener = listener;
992 }
993
994 public void setOnPresencePacketReceivedListener(
995 final OnPresencePacketReceived listener) {
996 this.presenceListener = listener;
997 }
998
999 public void setOnJinglePacketReceivedListener(
1000 final OnJinglePacketReceived listener) {
1001 this.jingleListener = listener;
1002 }
1003
1004 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1005 this.statusListener = listener;
1006 }
1007
1008 public void setOnBindListener(final OnBindListener listener) {
1009 this.bindListener = listener;
1010 }
1011
1012 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1013 this.acknowledgedListener = listener;
1014 }
1015
1016 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1017 if (!this.advancedStreamFeaturesLoadedListeners.contains(listener)) {
1018 this.advancedStreamFeaturesLoadedListeners.add(listener);
1019 }
1020 }
1021
1022 public void disconnect(final boolean force) {
1023 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": disconnecting");
1024 try {
1025 if (force) {
1026 socket.close();
1027 return;
1028 }
1029 new Thread(new Runnable() {
1030
1031 @Override
1032 public void run() {
1033 if (tagWriter.isActive()) {
1034 tagWriter.finish();
1035 try {
1036 int i = 0;
1037 boolean warned = false;
1038 while (!tagWriter.finished() && socket.isConnected() && i <= 10) {
1039 if (!warned) {
1040 Log.d(Config.LOGTAG, account.getJid().toBareJid()+": waiting for tag writer to finish");
1041 warned = true;
1042 }
1043 Thread.sleep(200);
1044 i++;
1045 }
1046 if (warned) {
1047 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": tag writer has finished");
1048 }
1049 tagWriter.writeTag(Tag.end("stream:stream"));
1050 socket.close();
1051 } catch (final IOException e) {
1052 Log.d(Config.LOGTAG,"io exception during disconnect");
1053 } catch (final InterruptedException e) {
1054 Log.d(Config.LOGTAG, "interrupted");
1055 }
1056 }
1057 }
1058 }).start();
1059 } catch (final IOException e) {
1060 Log.d(Config.LOGTAG, "io exception during disconnect");
1061 }
1062 }
1063
1064 public void resetStreamId() {
1065 this.streamId = null;
1066 }
1067
1068 public List<Jid> findDiscoItemsByFeature(final String feature) {
1069 final List<Jid> items = new ArrayList<>();
1070 for (final Entry<Jid, Info> cursor : disco.entrySet()) {
1071 if (cursor.getValue().features.contains(feature)) {
1072 items.add(cursor.getKey());
1073 }
1074 }
1075 return items;
1076 }
1077
1078 public Jid findDiscoItemByFeature(final String feature) {
1079 final List<Jid> items = findDiscoItemsByFeature(feature);
1080 if (items.size() >= 1) {
1081 return items.get(0);
1082 }
1083 return null;
1084 }
1085
1086 public boolean r() {
1087 if (getFeatures().sm()) {
1088 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1089 return true;
1090 } else {
1091 return false;
1092 }
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 public void setInteractive(boolean interactive) {
1152 this.mInteractive = interactive;
1153 }
1154
1155 private class Info {
1156 public final ArrayList<String> features = new ArrayList<>();
1157 public final ArrayList<Pair<String,String>> identities = new ArrayList<>();
1158 }
1159
1160 private class UnauthorizedException extends IOException {
1161
1162 }
1163
1164 private class SecurityException extends IOException {
1165
1166 }
1167
1168 private class IncompatibleServerException extends IOException {
1169
1170 }
1171
1172 private class DnsTimeoutException extends IOException {
1173
1174 }
1175
1176 public class Features {
1177 XmppConnection connection;
1178 private boolean carbonsEnabled = false;
1179 private boolean encryptionEnabled = false;
1180 private boolean blockListRequested = false;
1181
1182 public Features(final XmppConnection connection) {
1183 this.connection = connection;
1184 }
1185
1186 private boolean hasDiscoFeature(final Jid server, final String feature) {
1187 return connection.disco.containsKey(server) &&
1188 connection.disco.get(server).features.contains(feature);
1189 }
1190
1191 public boolean carbons() {
1192 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
1193 }
1194
1195 public boolean blocking() {
1196 return hasDiscoFeature(account.getServer(), Xmlns.BLOCKING);
1197 }
1198
1199 public boolean register() {
1200 return hasDiscoFeature(account.getServer(), Xmlns.REGISTER);
1201 }
1202
1203 public boolean sm() {
1204 return streamId != null
1205 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1206 }
1207
1208 public boolean csi() {
1209 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1210 }
1211
1212 public boolean pep() {
1213 final Pair<String,String> needle = new Pair<>("pubsub","pep");
1214 Info info = disco.get(account.getServer());
1215 if (info != null && info.identities.contains(needle)) {
1216 return true;
1217 } else {
1218 info = disco.get(account.getJid().toBareJid());
1219 return info != null && info.identities.contains(needle);
1220 }
1221 }
1222
1223 public boolean mam() {
1224 if (hasDiscoFeature(account.getJid().toBareJid(), "urn:xmpp:mam:0")) {
1225 return true;
1226 } else {
1227 return hasDiscoFeature(account.getServer(), "urn:xmpp:mam:0");
1228 }
1229 }
1230
1231 public boolean advancedStreamFeaturesLoaded() {
1232 return disco.containsKey(account.getServer());
1233 }
1234
1235 public boolean rosterVersioning() {
1236 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1237 }
1238
1239 public void setBlockListRequested(boolean value) {
1240 this.blockListRequested = value;
1241 }
1242
1243 public boolean httpUpload() {
1244 return findDiscoItemsByFeature(Xmlns.HTTP_UPLOAD).size() > 0;
1245 }
1246 }
1247
1248 private IqGenerator getIqGenerator() {
1249 return mXmppConnectionService.getIqGenerator();
1250 }
1251}