1package eu.siacs.conversations.xmpp;
2
3import android.graphics.Bitmap;
4import android.graphics.BitmapFactory;
5import android.os.Bundle;
6import android.os.Parcelable;
7import android.os.PowerManager;
8import android.os.PowerManager.WakeLock;
9import android.os.SystemClock;
10import android.security.KeyChain;
11import android.util.Base64;
12import android.util.Log;
13import android.util.Pair;
14import android.util.SparseArray;
15
16import org.apache.http.conn.ssl.StrictHostnameVerifier;
17import org.json.JSONException;
18import org.json.JSONObject;
19import org.xmlpull.v1.XmlPullParserException;
20
21import java.io.ByteArrayInputStream;
22import java.io.IOException;
23import java.io.InputStream;
24import java.io.OutputStream;
25import java.math.BigInteger;
26import java.net.ConnectException;
27import java.net.IDN;
28import java.net.InetAddress;
29import java.net.InetSocketAddress;
30import java.net.Socket;
31import java.net.UnknownHostException;
32import java.net.MalformedURLException;
33import java.net.URL;
34import java.security.KeyManagementException;
35import java.security.NoSuchAlgorithmException;
36import java.security.Principal;
37import java.security.PrivateKey;
38import java.security.cert.X509Certificate;
39import java.util.ArrayList;
40import java.util.Arrays;
41import java.util.Collection;
42import java.util.HashMap;
43import java.util.Hashtable;
44import java.util.Iterator;
45import java.util.LinkedList;
46import java.util.List;
47import java.util.Map.Entry;
48
49import javax.net.ssl.HostnameVerifier;
50import javax.net.ssl.KeyManager;
51import javax.net.ssl.SSLContext;
52import javax.net.ssl.SSLSocket;
53import javax.net.ssl.SSLSocketFactory;
54import javax.net.ssl.X509KeyManager;
55import javax.net.ssl.X509TrustManager;
56
57import de.duenndns.ssl.MemorizingTrustManager;
58import eu.siacs.conversations.Config;
59import eu.siacs.conversations.crypto.sasl.DigestMd5;
60import eu.siacs.conversations.crypto.sasl.External;
61import eu.siacs.conversations.crypto.sasl.Plain;
62import eu.siacs.conversations.crypto.sasl.SaslMechanism;
63import eu.siacs.conversations.crypto.sasl.ScramSha1;
64import eu.siacs.conversations.entities.Account;
65import eu.siacs.conversations.entities.Message;
66import eu.siacs.conversations.generator.IqGenerator;
67import eu.siacs.conversations.services.XmppConnectionService;
68import eu.siacs.conversations.utils.CryptoHelper;
69import eu.siacs.conversations.utils.DNSHelper;
70import eu.siacs.conversations.utils.Xmlns;
71import eu.siacs.conversations.xml.Element;
72import eu.siacs.conversations.xml.Tag;
73import eu.siacs.conversations.xml.TagWriter;
74import eu.siacs.conversations.xml.XmlReader;
75import eu.siacs.conversations.xmpp.forms.Data;
76import eu.siacs.conversations.xmpp.forms.Field;
77import eu.siacs.conversations.xmpp.jid.InvalidJidException;
78import eu.siacs.conversations.xmpp.jid.Jid;
79import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
80import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
81import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
82import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
83import eu.siacs.conversations.xmpp.stanzas.IqPacket;
84import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
85import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
86import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
87import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
88import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
89import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
90import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
91import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
92
93public class XmppConnection implements Runnable {
94
95 private static final int PACKET_IQ = 0;
96 private static final int PACKET_MESSAGE = 1;
97 private static final int PACKET_PRESENCE = 2;
98 protected Account account;
99 private final WakeLock wakeLock;
100 private Socket socket;
101 private XmlReader tagReader;
102 private TagWriter tagWriter;
103 private final Features features = new Features(this);
104 private boolean needsBinding = true;
105 private boolean shouldAuthenticate = true;
106 private Element streamFeatures;
107 private final HashMap<Jid, Info> disco = new HashMap<>();
108
109 private String streamId = null;
110 private int smVersion = 3;
111 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
112
113 private int stanzasReceived = 0;
114 private int stanzasSent = 0;
115 private long lastPacketReceived = 0;
116 private long lastPingSent = 0;
117 private long lastConnect = 0;
118 private long lastSessionStarted = 0;
119 private boolean mInteractive = false;
120 private int attempt = 0;
121 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
122 private OnPresencePacketReceived presenceListener = null;
123 private OnJinglePacketReceived jingleListener = null;
124 private OnIqPacketReceived unregisteredIqListener = null;
125 private OnMessagePacketReceived messageListener = null;
126 private OnStatusChanged statusListener = null;
127 private OnBindListener bindListener = null;
128 private final ArrayList<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new ArrayList<>();
129 private OnMessageAcknowledged acknowledgedListener = null;
130 private XmppConnectionService mXmppConnectionService = null;
131
132 private SaslMechanism saslMechanism;
133
134 private X509KeyManager mKeyManager = new X509KeyManager() {
135 @Override
136 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
137 return account.getPrivateKeyAlias();
138 }
139
140 @Override
141 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
142 return null;
143 }
144
145 @Override
146 public X509Certificate[] getCertificateChain(String alias) {
147 try {
148 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
149 } catch (Exception e) {
150 return new X509Certificate[0];
151 }
152 }
153
154 @Override
155 public String[] getClientAliases(String s, Principal[] principals) {
156 return new String[0];
157 }
158
159 @Override
160 public String[] getServerAliases(String s, Principal[] principals) {
161 return new String[0];
162 }
163
164 @Override
165 public PrivateKey getPrivateKey(String alias) {
166 try {
167 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
168 } catch (Exception e) {
169 return null;
170 }
171 }
172 };
173
174 private OnIqPacketReceived createPacketReceiveHandler() {
175 return new OnIqPacketReceived() {
176 @Override
177 public void onIqPacketReceived(Account account, IqPacket packet) {
178 if (packet.getType() == IqPacket.TYPE.RESULT) {
179 account.setOption(Account.OPTION_REGISTER,
180 false);
181 changeStatus(Account.State.REGISTRATION_SUCCESSFUL);
182 } else if (packet.hasChild("error")
183 && (packet.findChild("error")
184 .hasChild("conflict"))) {
185 changeStatus(Account.State.REGISTRATION_CONFLICT);
186 } else {
187 changeStatus(Account.State.REGISTRATION_FAILED);
188 Log.d(Config.LOGTAG, packet.toString());
189 }
190 disconnect(true);
191 }
192 };
193 }
194
195 public XmppConnection(final Account account, final XmppConnectionService service) {
196 this.account = account;
197 this.wakeLock = service.getPowerManager().newWakeLock(
198 PowerManager.PARTIAL_WAKE_LOCK, account.getJid().toBareJid().toString());
199 tagWriter = new TagWriter();
200 mXmppConnectionService = service;
201 }
202
203 protected void changeStatus(final Account.State nextStatus) {
204 if (account.getStatus() != nextStatus) {
205 if ((nextStatus == Account.State.OFFLINE)
206 && (account.getStatus() != Account.State.CONNECTING)
207 && (account.getStatus() != Account.State.ONLINE)
208 && (account.getStatus() != Account.State.DISABLED)) {
209 return;
210 }
211 if (nextStatus == Account.State.ONLINE) {
212 this.attempt = 0;
213 }
214 account.setStatus(nextStatus);
215 if (statusListener != null) {
216 statusListener.onStatusChanged(account);
217 }
218 }
219 }
220
221 protected void connect() {
222 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": connecting");
223 features.encryptionEnabled = false;
224 lastConnect = SystemClock.elapsedRealtime();
225 lastPingSent = SystemClock.elapsedRealtime();
226 this.attempt++;
227 try {
228 shouldAuthenticate = needsBinding = !account.isOptionSet(Account.OPTION_REGISTER);
229 tagReader = new XmlReader(wakeLock);
230 tagWriter = new TagWriter();
231 this.changeStatus(Account.State.CONNECTING);
232 if (DNSHelper.isIp(account.getServer().toString())) {
233 socket = new Socket();
234 try {
235 socket.connect(new InetSocketAddress(account.getServer().toString(), 5222), Config.SOCKET_TIMEOUT * 1000);
236 } catch (IOException e) {
237 throw new UnknownHostException();
238 }
239 } else {
240 final Bundle result = DNSHelper.getSRVRecord(account.getServer(),mXmppConnectionService);
241 final ArrayList<Parcelable> values = result.getParcelableArrayList("values");
242 int i = 0;
243 boolean socketError = true;
244 while (socketError && values.size() > i) {
245 final Bundle namePort = (Bundle) values.get(i);
246 try {
247 String srvRecordServer;
248 try {
249 srvRecordServer = IDN.toASCII(namePort.getString("name"));
250 } catch (final IllegalArgumentException e) {
251 // TODO: Handle me?`
252 srvRecordServer = "";
253 }
254 final int srvRecordPort = namePort.getInt("port");
255 final String srvIpServer = namePort.getString("ip");
256 final InetSocketAddress addr;
257 if (srvIpServer != null) {
258 addr = new InetSocketAddress(srvIpServer, srvRecordPort);
259 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
260 + ": using values from dns " + srvRecordServer
261 + "[" + srvIpServer + "]:" + srvRecordPort);
262 } else {
263 addr = new InetSocketAddress(srvRecordServer, srvRecordPort);
264 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
265 + ": using values from dns "
266 + srvRecordServer + ":" + srvRecordPort);
267 }
268 socket = new Socket();
269 socket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
270 socketError = false;
271 } catch (final Throwable e) {
272 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
273 i++;
274 }
275 }
276 if (socketError) {
277 throw new UnknownHostException();
278 }
279 }
280 final OutputStream out = socket.getOutputStream();
281 tagWriter.setOutputStream(out);
282 final InputStream in = socket.getInputStream();
283 tagReader.setInputStream(in);
284 tagWriter.beginDocument();
285 sendStartStream();
286 Tag nextTag;
287 while ((nextTag = tagReader.readTag()) != null) {
288 if (nextTag.isStart("stream")) {
289 processStream(nextTag);
290 break;
291 } else {
292 throw new IOException("unknown tag on connect");
293 }
294 }
295 if (socket.isConnected()) {
296 socket.close();
297 }
298 } catch (final IncompatibleServerException e) {
299 this.changeStatus(Account.State.INCOMPATIBLE_SERVER);
300 } catch (final SecurityException e) {
301 this.changeStatus(Account.State.SECURITY_ERROR);
302 } catch (final UnauthorizedException e) {
303 this.changeStatus(Account.State.UNAUTHORIZED);
304 } catch (final UnknownHostException | ConnectException e) {
305 this.changeStatus(Account.State.SERVER_NOT_FOUND);
306 } catch (final DnsTimeoutException e) {
307 this.changeStatus(Account.State.DNS_TIMEOUT);
308 } catch (final IOException | XmlPullParserException | NoSuchAlgorithmException e) {
309 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
310 this.changeStatus(Account.State.OFFLINE);
311 this.attempt--; //don't count attempt when reconnecting instantly anyway
312 } finally {
313 if (socket != null) {
314 try {
315 socket.close();
316 } catch (IOException e) {
317
318 }
319 }
320 if (wakeLock.isHeld()) {
321 try {
322 wakeLock.release();
323 } catch (final RuntimeException ignored) {
324 }
325 }
326 }
327 }
328
329 @Override
330 public void run() {
331 try {
332 if (socket != null) {
333 socket.close();
334 }
335 } catch (final IOException ignored) {
336
337 }
338 connect();
339 }
340
341 private void processStream(final Tag currentTag) throws XmlPullParserException,
342 IOException, NoSuchAlgorithmException {
343 Tag nextTag = tagReader.readTag();
344
345 while ((nextTag != null) && (!nextTag.isEnd("stream"))) {
346 if (nextTag.isStart("error")) {
347 processStreamError(nextTag);
348 } else if (nextTag.isStart("features")) {
349 processStreamFeatures(nextTag);
350 } else if (nextTag.isStart("proceed")) {
351 switchOverToTls(nextTag);
352 } else if (nextTag.isStart("success")) {
353 final String challenge = tagReader.readElement(nextTag).getContent();
354 try {
355 saslMechanism.getResponse(challenge);
356 } catch (final SaslMechanism.AuthenticationException e) {
357 disconnect(true);
358 Log.e(Config.LOGTAG, String.valueOf(e));
359 }
360 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": logged in");
361 account.setKey(Account.PINNED_MECHANISM_KEY,
362 String.valueOf(saslMechanism.getPriority()));
363 tagReader.reset();
364 sendStartStream();
365 processStream(tagReader.readTag());
366 break;
367 } else if (nextTag.isStart("failure")) {
368 throw new UnauthorizedException();
369 } else if (nextTag.isStart("challenge")) {
370 final String challenge = tagReader.readElement(nextTag).getContent();
371 final Element response = new Element("response");
372 response.setAttribute("xmlns",
373 "urn:ietf:params:xml:ns:xmpp-sasl");
374 try {
375 response.setContent(saslMechanism.getResponse(challenge));
376 } catch (final SaslMechanism.AuthenticationException e) {
377 // TODO: Send auth abort tag.
378 Log.e(Config.LOGTAG, e.toString());
379 }
380 tagWriter.writeElement(response);
381 } else if (nextTag.isStart("enabled")) {
382 final Element enabled = tagReader.readElement(nextTag);
383 if ("true".equals(enabled.getAttribute("resume"))) {
384 this.streamId = enabled.getAttribute("id");
385 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
386 + ": stream managment(" + smVersion
387 + ") enabled (resumable)");
388 } else {
389 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
390 + ": stream management(" + smVersion + ") enabled");
391 }
392 this.stanzasReceived = 0;
393 final RequestPacket r = new RequestPacket(smVersion);
394 tagWriter.writeStanzaAsync(r);
395 } else if (nextTag.isStart("resumed")) {
396 lastPacketReceived = SystemClock.elapsedRealtime();
397 final Element resumed = tagReader.readElement(nextTag);
398 final String h = resumed.getAttribute("h");
399 try {
400 final int serverCount = Integer.parseInt(h);
401 if (serverCount != stanzasSent) {
402 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
403 + ": session resumed with lost packages");
404 stanzasSent = serverCount;
405 } else {
406 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": session resumed");
407 }
408 acknowledgeStanzaUpTo(serverCount);
409 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
410 for(int i = 0; i < this.mStanzaQueue.size(); ++i) {
411 failedStanzas.add(mStanzaQueue.valueAt(i));
412 }
413 mStanzaQueue.clear();
414 Log.d(Config.LOGTAG,"resending "+failedStanzas.size()+" stanzas");
415 for(AbstractAcknowledgeableStanza packet : failedStanzas) {
416 if (packet instanceof MessagePacket) {
417 MessagePacket message = (MessagePacket) packet;
418 mXmppConnectionService.markMessage(account,
419 message.getTo().toBareJid(),
420 message.getId(),
421 Message.STATUS_UNSEND);
422 }
423 sendPacket(packet);
424 }
425 } catch (final NumberFormatException ignored) {
426 }
427 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": online with resource " + account.getResource());
428 changeStatus(Account.State.ONLINE);
429 } else if (nextTag.isStart("r")) {
430 tagReader.readElement(nextTag);
431 if (Config.EXTENDED_SM_LOGGING) {
432 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
433 }
434 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
435 tagWriter.writeStanzaAsync(ack);
436 } else if (nextTag.isStart("a")) {
437 final Element ack = tagReader.readElement(nextTag);
438 lastPacketReceived = SystemClock.elapsedRealtime();
439 try {
440 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
441 acknowledgeStanzaUpTo(serverSequence);
442 } catch (NumberFormatException e) {
443 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": server send ack without sequence number");
444 }
445 } else if (nextTag.isStart("failed")) {
446 tagReader.readElement(nextTag);
447 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": resumption failed");
448 streamId = null;
449 if (account.getStatus() != Account.State.ONLINE) {
450 sendBindRequest();
451 }
452 } else if (nextTag.isStart("iq")) {
453 processIq(nextTag);
454 } else if (nextTag.isStart("message")) {
455 processMessage(nextTag);
456 } else if (nextTag.isStart("presence")) {
457 processPresence(nextTag);
458 }
459 nextTag = tagReader.readTag();
460 }
461 if (account.getStatus() == Account.State.ONLINE) {
462 account. setStatus(Account.State.OFFLINE);
463 if (statusListener != null) {
464 statusListener.onStatusChanged(account);
465 }
466 }
467 }
468
469 private void acknowledgeStanzaUpTo(int serverCount) {
470 for (int i = 0; i < mStanzaQueue.size(); ++i) {
471 if (serverCount >= mStanzaQueue.keyAt(i)) {
472 if (Config.EXTENDED_SM_LOGGING) {
473 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
474 }
475 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
476 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
477 MessagePacket packet = (MessagePacket) stanza;
478 acknowledgedListener.onMessageAcknowledged(account, packet.getId());
479 }
480 mStanzaQueue.removeAt(i);
481 i--;
482 }
483 }
484 }
485
486 private Element processPacket(final Tag currentTag, final int packetType)
487 throws XmlPullParserException, IOException {
488 Element element;
489 switch (packetType) {
490 case PACKET_IQ:
491 element = new IqPacket();
492 break;
493 case PACKET_MESSAGE:
494 element = new MessagePacket();
495 break;
496 case PACKET_PRESENCE:
497 element = new PresencePacket();
498 break;
499 default:
500 return null;
501 }
502 element.setAttributes(currentTag.getAttributes());
503 Tag nextTag = tagReader.readTag();
504 if (nextTag == null) {
505 throw new IOException("interrupted mid tag");
506 }
507 while (!nextTag.isEnd(element.getName())) {
508 if (!nextTag.isNo()) {
509 final Element child = tagReader.readElement(nextTag);
510 final String type = currentTag.getAttribute("type");
511 if (packetType == PACKET_IQ
512 && "jingle".equals(child.getName())
513 && ("set".equalsIgnoreCase(type) || "get"
514 .equalsIgnoreCase(type))) {
515 element = new JinglePacket();
516 element.setAttributes(currentTag.getAttributes());
517 }
518 element.addChild(child);
519 }
520 nextTag = tagReader.readTag();
521 if (nextTag == null) {
522 throw new IOException("interrupted mid tag");
523 }
524 }
525 if (stanzasReceived == Integer.MAX_VALUE) {
526 resetStreamId();
527 throw new IOException("time to restart the session. cant handle >2 billion pcks");
528 }
529 ++stanzasReceived;
530 lastPacketReceived = SystemClock.elapsedRealtime();
531 return element;
532 }
533
534 private void processIq(final Tag currentTag) throws XmlPullParserException, IOException {
535 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
536
537 if (packet.getId() == null) {
538 return; // an iq packet without id is definitely invalid
539 }
540
541 if (packet instanceof JinglePacket) {
542 if (this.jingleListener != null) {
543 this.jingleListener.onJinglePacketReceived(account,(JinglePacket) packet);
544 }
545 } else {
546 OnIqPacketReceived callback = null;
547 synchronized (this.packetCallbacks) {
548 if (packetCallbacks.containsKey(packet.getId())) {
549 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
550 // Packets to the server should have responses from the server
551 if (packetCallbackDuple.first.toServer(account)) {
552 if (packet.fromServer(account) || account.getJid().getDomainpart().equals("chat.facebook.com")) {
553 callback = packetCallbackDuple.second;
554 packetCallbacks.remove(packet.getId());
555 } else {
556 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
557 }
558 } else {
559 if (packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
560 callback = packetCallbackDuple.second;
561 packetCallbacks.remove(packet.getId());
562 } else {
563 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
564 }
565 }
566 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
567 callback = this.unregisteredIqListener;
568 }
569 }
570 if (callback != null) {
571 callback.onIqPacketReceived(account,packet);
572 }
573 }
574 }
575
576 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
577 final MessagePacket packet = (MessagePacket) processPacket(currentTag,PACKET_MESSAGE);
578 this.messageListener.onMessagePacketReceived(account, packet);
579 }
580
581 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
582 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
583 this.presenceListener.onPresencePacketReceived(account, packet);
584 }
585
586 private void sendStartTLS() throws IOException {
587 final Tag startTLS = Tag.empty("starttls");
588 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
589 tagWriter.writeTag(startTLS);
590 }
591
592 private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
593 tagReader.readTag();
594 try {
595 final SSLContext sc = SSLContext.getInstance("TLS");
596 MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
597 KeyManager[] keyManager;
598 if (account.getPrivateKeyAlias() != null && account.getPassword().isEmpty()) {
599 keyManager = new KeyManager[]{ mKeyManager };
600 } else {
601 keyManager = null;
602 }
603 sc.init(keyManager,new X509TrustManager[]{mInteractive ? trustManager : trustManager.getNonInteractive()},mXmppConnectionService.getRNG());
604 final SSLSocketFactory factory = sc.getSocketFactory();
605 final HostnameVerifier verifier;
606 if (mInteractive) {
607 verifier = trustManager.wrapHostnameVerifier(new StrictHostnameVerifier());
608 } else {
609 verifier = trustManager.wrapHostnameVerifierNonInteractive(new StrictHostnameVerifier());
610 }
611 final InetAddress address = socket == null ? null : socket.getInetAddress();
612
613 if (factory == null || address == null || verifier == null) {
614 throw new IOException("could not setup ssl");
615 }
616
617 final SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,address.getHostAddress(), socket.getPort(),true);
618
619 if (sslSocket == null) {
620 throw new IOException("could not initialize ssl socket");
621 }
622
623 final String[] supportProtocols;
624 final Collection<String> supportedProtocols = new LinkedList<>(
625 Arrays.asList(sslSocket.getSupportedProtocols()));
626 supportedProtocols.remove("SSLv3");
627 supportProtocols = supportedProtocols.toArray(new String[supportedProtocols.size()]);
628
629 sslSocket.setEnabledProtocols(supportProtocols);
630
631 final String[] cipherSuites = CryptoHelper.getOrderedCipherSuites(
632 sslSocket.getSupportedCipherSuites());
633 //Log.d(Config.LOGTAG, "Using ciphers: " + Arrays.toString(cipherSuites));
634 if (cipherSuites.length > 0) {
635 sslSocket.setEnabledCipherSuites(cipherSuites);
636 }
637
638 if (!verifier.verify(account.getServer().getDomainpart(),sslSocket.getSession())) {
639 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": TLS certificate verification failed");
640 throw new SecurityException();
641 }
642 tagReader.setInputStream(sslSocket.getInputStream());
643 tagWriter.setOutputStream(sslSocket.getOutputStream());
644 sendStartStream();
645 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": TLS connection established");
646 features.encryptionEnabled = true;
647 processStream(tagReader.readTag());
648 sslSocket.close();
649 } catch (final NoSuchAlgorithmException | KeyManagementException e1) {
650 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": TLS certificate verification failed");
651 throw new SecurityException();
652 }
653 }
654
655 private void processStreamFeatures(final Tag currentTag)
656 throws XmlPullParserException, IOException {
657 this.streamFeatures = tagReader.readElement(currentTag);
658 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
659 sendStartTLS();
660 } else if (this.streamFeatures.hasChild("register")
661 && account.isOptionSet(Account.OPTION_REGISTER)
662 && features.encryptionEnabled) {
663 sendRegistryRequest();
664 } else if (!this.streamFeatures.hasChild("register")
665 && account.isOptionSet(Account.OPTION_REGISTER)) {
666 changeStatus(Account.State.REGISTRATION_NOT_SUPPORTED);
667 disconnect(true);
668 } else if (this.streamFeatures.hasChild("mechanisms")
669 && shouldAuthenticate && features.encryptionEnabled) {
670 final List<String> mechanisms = extractMechanisms(streamFeatures
671 .findChild("mechanisms"));
672 final Element auth = new Element("auth");
673 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
674 if (mechanisms.contains("EXTERNAL")) {
675 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
676 } else if (mechanisms.contains("SCRAM-SHA-1")) {
677 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
678 } else if (mechanisms.contains("PLAIN")) {
679 saslMechanism = new Plain(tagWriter, account);
680 } else if (mechanisms.contains("DIGEST-MD5")) {
681 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
682 }
683 if (saslMechanism != null) {
684 final JSONObject keys = account.getKeys();
685 try {
686 if (keys.has(Account.PINNED_MECHANISM_KEY) &&
687 keys.getInt(Account.PINNED_MECHANISM_KEY) > saslMechanism.getPriority()) {
688 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
689 " has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
690 ") than pinned priority (" + keys.getInt(Account.PINNED_MECHANISM_KEY) +
691 "). Possible downgrade attack?");
692 throw new SecurityException();
693 }
694 } catch (final JSONException e) {
695 Log.d(Config.LOGTAG, "Parse error while checking pinned auth mechanism");
696 }
697 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
698 auth.setAttribute("mechanism", saslMechanism.getMechanism());
699 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
700 auth.setContent(saslMechanism.getClientFirstMessage());
701 }
702 tagWriter.writeElement(auth);
703 } else {
704 throw new IncompatibleServerException();
705 }
706 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
707 if (Config.EXTENDED_SM_LOGGING) {
708 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": resuming after stanza #"+stanzasReceived);
709 }
710 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
711 this.tagWriter.writeStanzaAsync(resume);
712 } else if (needsBinding) {
713 if (this.streamFeatures.hasChild("bind")) {
714 sendBindRequest();
715 } else {
716 throw new IncompatibleServerException();
717 }
718 }
719 }
720
721 private List<String> extractMechanisms(final Element stream) {
722 final ArrayList<String> mechanisms = new ArrayList<>(stream
723 .getChildren().size());
724 for (final Element child : stream.getChildren()) {
725 mechanisms.add(child.getContent());
726 }
727 return mechanisms;
728 }
729
730 public void sendCaptchaRegistryRequest(String id, Data data) {
731 if (data == null) {
732 setAccountCreationFailed("");
733 } else {
734 IqPacket request = getIqGenerator().generateCreateAccountWithCaptcha(account, id, data);
735 sendIqPacket(request, createPacketReceiveHandler());
736 }
737 }
738
739 private void sendRegistryRequest() {
740 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
741 register.query("jabber:iq:register");
742 register.setTo(account.getServer());
743 sendIqPacket(register, new OnIqPacketReceived() {
744
745 @Override
746 public void onIqPacketReceived(final Account account, final IqPacket packet) {
747 boolean failed = false;
748 if (packet.getType() == IqPacket.TYPE.RESULT
749 && packet.query().hasChild("username")
750 && (packet.query().hasChild("password"))) {
751 final IqPacket register = new IqPacket(IqPacket.TYPE.SET);
752 final Element username = new Element("username").setContent(account.getUsername());
753 final Element password = new Element("password").setContent(account.getPassword());
754 register.query("jabber:iq:register").addChild(username);
755 register.query().addChild(password);
756 sendIqPacket(register, createPacketReceiveHandler());
757 } else if (packet.getType() == IqPacket.TYPE.RESULT
758 && (packet.query().hasChild("x", "jabber:x:data"))) {
759 final Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
760 final Element blob = packet.query().findChild("data", "urn:xmpp:bob");
761 final String id = packet.getId();
762
763 Bitmap captcha = null;
764 if (blob != null) {
765 try {
766 final String base64Blob = blob.getContent();
767 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
768 InputStream stream = new ByteArrayInputStream(strBlob);
769 captcha = BitmapFactory.decodeStream(stream);
770 } catch (Exception e) {
771 //ignored
772 }
773 } else {
774 try {
775 Field url = data.getFieldByName("url");
776 String urlString = url.findChildContent("value");
777 URL uri = new URL(urlString);
778 captcha = BitmapFactory.decodeStream(uri.openConnection().getInputStream());
779 } catch(IOException e) {
780 Log.e(Config.LOGTAG, e.toString());
781 }
782 }
783
784 if (captcha != null) {
785 failed = !mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha);
786 }
787 } else {
788 failed = true;
789 }
790
791 if (failed) {
792 final Element instructions = packet.query().findChild("instructions");
793 setAccountCreationFailed((instructions != null) ? instructions.getContent() : "");
794 }
795 }
796 });
797 }
798
799 private void setAccountCreationFailed(String instructions) {
800 changeStatus(Account.State.REGISTRATION_FAILED);
801 disconnect(true);
802 Log.d(Config.LOGTAG, account.getJid().toBareJid()
803 + ": could not register. instructions are"
804 + instructions);
805 }
806
807 private void sendBindRequest() {
808 while(!mXmppConnectionService.areMessagesInitialized()) {
809 try {
810 Thread.sleep(500);
811 } catch (final InterruptedException ignored) {
812 }
813 }
814 needsBinding = false;
815 clearIqCallbacks();
816 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
817 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
818 .addChild("resource").setContent(account.getResource());
819 this.sendUnmodifiedIqPacket(iq, new OnIqPacketReceived() {
820 @Override
821 public void onIqPacketReceived(final Account account, final IqPacket packet) {
822 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
823 return;
824 }
825 final Element bind = packet.findChild("bind");
826 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
827 final Element jid = bind.findChild("jid");
828 if (jid != null && jid.getContent() != null) {
829 try {
830 account.setResource(Jid.fromString(jid.getContent()).getResourcepart());
831 } catch (final InvalidJidException e) {
832 // TODO: Handle the case where an external JID is technically invalid?
833 }
834 if (streamFeatures.hasChild("session")) {
835 sendStartSession();
836 } else {
837 sendPostBindInitialization();
838 }
839 } else {
840 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure");
841 disconnect(true);
842 }
843 } else {
844 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure");
845 disconnect(true);
846 }
847 }
848 });
849 }
850
851 private void clearIqCallbacks() {
852 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
853 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
854 synchronized (this.packetCallbacks) {
855 if (this.packetCallbacks.size() == 0) {
856 return;
857 }
858 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": clearing "+this.packetCallbacks.size()+" iq callbacks");
859 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
860 while (iterator.hasNext()) {
861 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
862 callbacks.add(entry.second);
863 iterator.remove();
864 }
865 }
866 for(OnIqPacketReceived callback : callbacks) {
867 callback.onIqPacketReceived(account,failurePacket);
868 }
869 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
870 }
871
872 private void sendStartSession() {
873 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
874 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
875 this.sendUnmodifiedIqPacket(startSession, new OnIqPacketReceived() {
876 @Override
877 public void onIqPacketReceived(Account account, IqPacket packet) {
878 if (packet.getType() == IqPacket.TYPE.RESULT) {
879 sendPostBindInitialization();
880 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT){
881 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not init sessions");
882 disconnect(true);
883 }
884 }
885 });
886 }
887
888 private void sendPostBindInitialization() {
889 smVersion = 0;
890 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
891 smVersion = 3;
892 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
893 smVersion = 2;
894 }
895 if (smVersion != 0) {
896 final EnablePacket enable = new EnablePacket(smVersion);
897 tagWriter.writeStanzaAsync(enable);
898 stanzasSent = 0;
899 mStanzaQueue.clear();
900 }
901 features.carbonsEnabled = false;
902 features.blockListRequested = false;
903 disco.clear();
904 sendServiceDiscoveryInfo(account.getServer());
905 sendServiceDiscoveryInfo(account.getJid().toBareJid());
906 sendServiceDiscoveryItems(account.getServer());
907 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": online with resource " + account.getResource());
908 this.lastSessionStarted = SystemClock.elapsedRealtime();
909 changeStatus(Account.State.ONLINE);
910 if (bindListener != null) {
911 bindListener.onBind(account);
912 }
913 }
914
915 private void sendServiceDiscoveryInfo(final Jid jid) {
916 if (disco.containsKey(jid)) {
917 if (account.getServer().equals(jid)) {
918 enableAdvancedStreamFeatures();
919 }
920 } else {
921 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
922 iq.setTo(jid);
923 iq.query("http://jabber.org/protocol/disco#info");
924 this.sendIqPacket(iq, new OnIqPacketReceived() {
925
926 @Override
927 public void onIqPacketReceived(final Account account, final IqPacket packet) {
928 if (packet.getType() == IqPacket.TYPE.RESULT) {
929 final List<Element> elements = packet.query().getChildren();
930 final Info info = new Info();
931 for (final Element element : elements) {
932 if (element.getName().equals("identity")) {
933 String type = element.getAttribute("type");
934 String category = element.getAttribute("category");
935 if (type != null && category != null) {
936 info.identities.add(new Pair<>(category, type));
937 }
938 } else if (element.getName().equals("feature")) {
939 info.features.add(element.getAttribute("var"));
940 }
941 }
942 disco.put(jid, info);
943 if (account.getServer().equals(jid)) {
944 enableAdvancedStreamFeatures();
945 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
946 listener.onAdvancedStreamFeaturesAvailable(account);
947 }
948 }
949 } else {
950 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": could not query disco info for "+jid.toString());
951 }
952 }
953 });
954 }
955 }
956
957 private void enableAdvancedStreamFeatures() {
958 if (getFeatures().carbons() && !features.carbonsEnabled) {
959 sendEnableCarbons();
960 }
961 if (getFeatures().blocking() && !features.blockListRequested) {
962 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": Requesting block list");
963 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
964 }
965 }
966
967 private void sendServiceDiscoveryItems(final Jid server) {
968 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
969 iq.setTo(server.toDomainJid());
970 iq.query("http://jabber.org/protocol/disco#items");
971 this.sendIqPacket(iq, new OnIqPacketReceived() {
972
973 @Override
974 public void onIqPacketReceived(final Account account, final IqPacket packet) {
975 if (packet.getType() == IqPacket.TYPE.RESULT) {
976 final List<Element> elements = packet.query().getChildren();
977 for (final Element element : elements) {
978 if (element.getName().equals("item")) {
979 final Jid jid = element.getAttributeAsJid("jid");
980 if (jid != null && !jid.equals(account.getServer())) {
981 sendServiceDiscoveryInfo(jid);
982 }
983 }
984 }
985 } else {
986 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": could not query disco items of "+server);
987 }
988 }
989 });
990 }
991
992 private void sendEnableCarbons() {
993 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
994 iq.addChild("enable", "urn:xmpp:carbons:2");
995 this.sendIqPacket(iq, new OnIqPacketReceived() {
996
997 @Override
998 public void onIqPacketReceived(final Account account, final IqPacket packet) {
999 if (!packet.hasChild("error")) {
1000 Log.d(Config.LOGTAG, account.getJid().toBareJid()
1001 + ": successfully enabled carbons");
1002 features.carbonsEnabled = true;
1003 } else {
1004 Log.d(Config.LOGTAG, account.getJid().toBareJid()
1005 + ": error enableing carbons " + packet.toString());
1006 }
1007 }
1008 });
1009 }
1010
1011 private void processStreamError(final Tag currentTag)
1012 throws XmlPullParserException, IOException {
1013 final Element streamError = tagReader.readElement(currentTag);
1014 if (streamError != null && streamError.hasChild("conflict")) {
1015 final String resource = account.getResource().split("\\.")[0];
1016 account.setResource(resource + "." + nextRandomId());
1017 Log.d(Config.LOGTAG,
1018 account.getJid().toBareJid() + ": switching resource due to conflict ("
1019 + account.getResource() + ")");
1020 } else if (streamError != null) {
1021 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": stream error "+streamError.toString());
1022 }
1023 }
1024
1025 private void sendStartStream() throws IOException {
1026 final Tag stream = Tag.start("stream:stream");
1027 stream.setAttribute("to", account.getServer().toString());
1028 stream.setAttribute("version", "1.0");
1029 stream.setAttribute("xml:lang", "en");
1030 stream.setAttribute("xmlns", "jabber:client");
1031 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1032 tagWriter.writeTag(stream);
1033 }
1034
1035 private String nextRandomId() {
1036 return new BigInteger(50, mXmppConnectionService.getRNG()).toString(32);
1037 }
1038
1039 public void sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1040 packet.setFrom(account.getJid());
1041 this.sendUnmodifiedIqPacket(packet, callback);
1042
1043 }
1044
1045 private synchronized void sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1046 if (packet.getId() == null) {
1047 final String id = nextRandomId();
1048 packet.setAttribute("id", id);
1049 }
1050 if (callback != null) {
1051 synchronized (this.packetCallbacks) {
1052 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1053 }
1054 }
1055 this.sendPacket(packet);
1056 }
1057
1058 public void sendMessagePacket(final MessagePacket packet) {
1059 this.sendPacket(packet);
1060 }
1061
1062 public void sendPresencePacket(final PresencePacket packet) {
1063 this.sendPacket(packet);
1064 }
1065
1066 private synchronized void sendPacket(final AbstractStanza packet) {
1067 if (stanzasSent == Integer.MAX_VALUE) {
1068 resetStreamId();
1069 disconnect(true);
1070 return;
1071 }
1072 tagWriter.writeStanzaAsync(packet);
1073 if (packet instanceof AbstractAcknowledgeableStanza) {
1074 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1075 ++stanzasSent;
1076 this.mStanzaQueue.put(stanzasSent, stanza);
1077 if (stanza instanceof MessagePacket && stanza.getId() != null && getFeatures().sm()) {
1078 if (Config.EXTENDED_SM_LOGGING) {
1079 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1080 }
1081 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1082 }
1083 }
1084 }
1085
1086 public void sendPing() {
1087 if (!r()) {
1088 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1089 iq.setFrom(account.getJid());
1090 iq.addChild("ping", "urn:xmpp:ping");
1091 this.sendIqPacket(iq, null);
1092 }
1093 this.lastPingSent = SystemClock.elapsedRealtime();
1094 }
1095
1096 public void setOnMessagePacketReceivedListener(
1097 final OnMessagePacketReceived listener) {
1098 this.messageListener = listener;
1099 }
1100
1101 public void setOnUnregisteredIqPacketReceivedListener(
1102 final OnIqPacketReceived listener) {
1103 this.unregisteredIqListener = listener;
1104 }
1105
1106 public void setOnPresencePacketReceivedListener(
1107 final OnPresencePacketReceived listener) {
1108 this.presenceListener = listener;
1109 }
1110
1111 public void setOnJinglePacketReceivedListener(
1112 final OnJinglePacketReceived listener) {
1113 this.jingleListener = listener;
1114 }
1115
1116 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1117 this.statusListener = listener;
1118 }
1119
1120 public void setOnBindListener(final OnBindListener listener) {
1121 this.bindListener = listener;
1122 }
1123
1124 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1125 this.acknowledgedListener = listener;
1126 }
1127
1128 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1129 if (!this.advancedStreamFeaturesLoadedListeners.contains(listener)) {
1130 this.advancedStreamFeaturesLoadedListeners.add(listener);
1131 }
1132 }
1133
1134 public void disconnect(final boolean force) {
1135 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": disconnecting");
1136 try {
1137 if (force) {
1138 socket.close();
1139 return;
1140 }
1141 new Thread(new Runnable() {
1142
1143 @Override
1144 public void run() {
1145 if (tagWriter.isActive()) {
1146 tagWriter.finish();
1147 try {
1148 int i = 0;
1149 boolean warned = false;
1150 while (!tagWriter.finished() && socket.isConnected() && i <= 10) {
1151 if (!warned) {
1152 Log.d(Config.LOGTAG, account.getJid().toBareJid()+": waiting for tag writer to finish");
1153 warned = true;
1154 }
1155 Thread.sleep(200);
1156 i++;
1157 }
1158 if (warned) {
1159 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": tag writer has finished");
1160 }
1161 tagWriter.writeTag(Tag.end("stream:stream"));
1162 socket.close();
1163 } catch (final IOException e) {
1164 Log.d(Config.LOGTAG,"io exception during disconnect");
1165 } catch (final InterruptedException e) {
1166 Log.d(Config.LOGTAG, "interrupted");
1167 }
1168 }
1169 }
1170 }).start();
1171 } catch (final IOException e) {
1172 Log.d(Config.LOGTAG, "io exception during disconnect");
1173 }
1174 }
1175
1176 public void resetStreamId() {
1177 this.streamId = null;
1178 }
1179
1180 public List<Jid> findDiscoItemsByFeature(final String feature) {
1181 final List<Jid> items = new ArrayList<>();
1182 for (final Entry<Jid, Info> cursor : disco.entrySet()) {
1183 if (cursor.getValue().features.contains(feature)) {
1184 items.add(cursor.getKey());
1185 }
1186 }
1187 return items;
1188 }
1189
1190 public Jid findDiscoItemByFeature(final String feature) {
1191 final List<Jid> items = findDiscoItemsByFeature(feature);
1192 if (items.size() >= 1) {
1193 return items.get(0);
1194 }
1195 return null;
1196 }
1197
1198 public boolean r() {
1199 if (getFeatures().sm()) {
1200 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1201 return true;
1202 } else {
1203 return false;
1204 }
1205 }
1206
1207 public String getMucServer() {
1208 for (final Entry<Jid, Info> cursor : disco.entrySet()) {
1209 final Info value = cursor.getValue();
1210 if (value.features.contains("http://jabber.org/protocol/muc")
1211 && !value.features.contains("jabber:iq:gateway")
1212 && !value.identities.contains(new Pair<>("conference","irc"))) {
1213 return cursor.getKey().toString();
1214 }
1215 }
1216 return null;
1217 }
1218
1219 public int getTimeToNextAttempt() {
1220 final int interval = (int) (25 * Math.pow(1.5, attempt));
1221 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1222 return interval - secondsSinceLast;
1223 }
1224
1225 public int getAttempt() {
1226 return this.attempt;
1227 }
1228
1229 public Features getFeatures() {
1230 return this.features;
1231 }
1232
1233 public long getLastSessionEstablished() {
1234 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1235 return System.currentTimeMillis() - diff;
1236 }
1237
1238 public long getLastConnect() {
1239 return this.lastConnect;
1240 }
1241
1242 public long getLastPingSent() {
1243 return this.lastPingSent;
1244 }
1245
1246 public long getLastPacketReceived() {
1247 return this.lastPacketReceived;
1248 }
1249
1250 public void sendActive() {
1251 this.sendPacket(new ActivePacket());
1252 }
1253
1254 public void sendInactive() {
1255 this.sendPacket(new InactivePacket());
1256 }
1257
1258 public void resetAttemptCount() {
1259 this.attempt = 0;
1260 this.lastConnect = 0;
1261 }
1262
1263 public void setInteractive(boolean interactive) {
1264 this.mInteractive = interactive;
1265 }
1266
1267 private class Info {
1268 public final ArrayList<String> features = new ArrayList<>();
1269 public final ArrayList<Pair<String,String>> identities = new ArrayList<>();
1270 }
1271
1272 private class UnauthorizedException extends IOException {
1273
1274 }
1275
1276 private class SecurityException extends IOException {
1277
1278 }
1279
1280 private class IncompatibleServerException extends IOException {
1281
1282 }
1283
1284 private class DnsTimeoutException extends IOException {
1285
1286 }
1287
1288 public class Features {
1289 XmppConnection connection;
1290 private boolean carbonsEnabled = false;
1291 private boolean encryptionEnabled = false;
1292 private boolean blockListRequested = false;
1293
1294 public Features(final XmppConnection connection) {
1295 this.connection = connection;
1296 }
1297
1298 private boolean hasDiscoFeature(final Jid server, final String feature) {
1299 return connection.disco.containsKey(server) &&
1300 connection.disco.get(server).features.contains(feature);
1301 }
1302
1303 public boolean carbons() {
1304 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
1305 }
1306
1307 public boolean blocking() {
1308 return hasDiscoFeature(account.getServer(), Xmlns.BLOCKING);
1309 }
1310
1311 public boolean register() {
1312 return hasDiscoFeature(account.getServer(), Xmlns.REGISTER);
1313 }
1314
1315 public boolean sm() {
1316 return streamId != null
1317 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1318 }
1319
1320 public boolean csi() {
1321 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1322 }
1323
1324 public boolean pep() {
1325 final Pair<String,String> needle = new Pair<>("pubsub","pep");
1326 Info info = disco.get(account.getServer());
1327 if (info != null && info.identities.contains(needle)) {
1328 return true;
1329 } else {
1330 info = disco.get(account.getJid().toBareJid());
1331 return info != null && info.identities.contains(needle);
1332 }
1333 }
1334
1335 public boolean mam() {
1336 if (hasDiscoFeature(account.getJid().toBareJid(), "urn:xmpp:mam:0")) {
1337 return true;
1338 } else {
1339 return hasDiscoFeature(account.getServer(), "urn:xmpp:mam:0");
1340 }
1341 }
1342
1343 public boolean advancedStreamFeaturesLoaded() {
1344 return disco.containsKey(account.getServer());
1345 }
1346
1347 public boolean rosterVersioning() {
1348 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1349 }
1350
1351 public void setBlockListRequested(boolean value) {
1352 this.blockListRequested = value;
1353 }
1354
1355 public boolean httpUpload() {
1356 return findDiscoItemsByFeature(Xmlns.HTTP_UPLOAD).size() > 0;
1357 }
1358 }
1359
1360 private IqGenerator getIqGenerator() {
1361 return mXmppConnectionService.getIqGenerator();
1362 }
1363}