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.URL;
33import java.security.KeyManagementException;
34import java.security.NoSuchAlgorithmException;
35import java.security.Principal;
36import java.security.PrivateKey;
37import java.security.cert.X509Certificate;
38import java.util.ArrayList;
39import java.util.Arrays;
40import java.util.Collection;
41import java.util.HashMap;
42import java.util.Hashtable;
43import java.util.Iterator;
44import java.util.LinkedList;
45import java.util.List;
46import java.util.Map.Entry;
47
48import javax.net.ssl.HostnameVerifier;
49import javax.net.ssl.KeyManager;
50import javax.net.ssl.SSLContext;
51import javax.net.ssl.SSLSocket;
52import javax.net.ssl.SSLSocketFactory;
53import javax.net.ssl.X509KeyManager;
54import javax.net.ssl.X509TrustManager;
55
56import de.duenndns.ssl.MemorizingTrustManager;
57import eu.siacs.conversations.Config;
58import eu.siacs.conversations.crypto.XmppDomainVerifier;
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();
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() throws XmlPullParserException, IOException, NoSuchAlgorithmException {
342 Tag nextTag = tagReader.readTag();
343 while (nextTag != null && !nextTag.isEnd("stream")) {
344 if (nextTag.isStart("error")) {
345 processStreamError(nextTag);
346 } else if (nextTag.isStart("features")) {
347 processStreamFeatures(nextTag);
348 } else if (nextTag.isStart("proceed")) {
349 switchOverToTls(nextTag);
350 } else if (nextTag.isStart("success")) {
351 final String challenge = tagReader.readElement(nextTag).getContent();
352 try {
353 saslMechanism.getResponse(challenge);
354 } catch (final SaslMechanism.AuthenticationException e) {
355 disconnect(true);
356 Log.e(Config.LOGTAG, String.valueOf(e));
357 }
358 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": logged in");
359 account.setKey(Account.PINNED_MECHANISM_KEY,
360 String.valueOf(saslMechanism.getPriority()));
361 tagReader.reset();
362 sendStartStream();
363 final Tag tag = tagReader.readTag();
364 if (tag != null && tag.isStart("stream")) {
365 processStream();
366 } else {
367 throw new IOException("server didn't restart stream after successful auth");
368 }
369 break;
370 } else if (nextTag.isStart("failure")) {
371 throw new UnauthorizedException();
372 } else if (nextTag.isStart("challenge")) {
373 final String challenge = tagReader.readElement(nextTag).getContent();
374 final Element response = new Element("response");
375 response.setAttribute("xmlns",
376 "urn:ietf:params:xml:ns:xmpp-sasl");
377 try {
378 response.setContent(saslMechanism.getResponse(challenge));
379 } catch (final SaslMechanism.AuthenticationException e) {
380 // TODO: Send auth abort tag.
381 Log.e(Config.LOGTAG, e.toString());
382 }
383 tagWriter.writeElement(response);
384 } else if (nextTag.isStart("enabled")) {
385 final Element enabled = tagReader.readElement(nextTag);
386 if ("true".equals(enabled.getAttribute("resume"))) {
387 this.streamId = enabled.getAttribute("id");
388 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
389 + ": stream managment(" + smVersion
390 + ") enabled (resumable)");
391 } else {
392 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
393 + ": stream management(" + smVersion + ") enabled");
394 }
395 this.stanzasReceived = 0;
396 final RequestPacket r = new RequestPacket(smVersion);
397 tagWriter.writeStanzaAsync(r);
398 } else if (nextTag.isStart("resumed")) {
399 lastPacketReceived = SystemClock.elapsedRealtime();
400 final Element resumed = tagReader.readElement(nextTag);
401 final String h = resumed.getAttribute("h");
402 try {
403 final int serverCount = Integer.parseInt(h);
404 if (serverCount != stanzasSent) {
405 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
406 + ": session resumed with lost packages");
407 stanzasSent = serverCount;
408 } else {
409 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": session resumed");
410 }
411 acknowledgeStanzaUpTo(serverCount);
412 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
413 for(int i = 0; i < this.mStanzaQueue.size(); ++i) {
414 failedStanzas.add(mStanzaQueue.valueAt(i));
415 }
416 mStanzaQueue.clear();
417 Log.d(Config.LOGTAG,"resending "+failedStanzas.size()+" stanzas");
418 for(AbstractAcknowledgeableStanza packet : failedStanzas) {
419 if (packet instanceof MessagePacket) {
420 MessagePacket message = (MessagePacket) packet;
421 mXmppConnectionService.markMessage(account,
422 message.getTo().toBareJid(),
423 message.getId(),
424 Message.STATUS_UNSEND);
425 }
426 sendPacket(packet);
427 }
428 } catch (final NumberFormatException ignored) {
429 }
430 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": online with resource " + account.getResource());
431 changeStatus(Account.State.ONLINE);
432 } else if (nextTag.isStart("r")) {
433 tagReader.readElement(nextTag);
434 if (Config.EXTENDED_SM_LOGGING) {
435 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
436 }
437 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
438 tagWriter.writeStanzaAsync(ack);
439 } else if (nextTag.isStart("a")) {
440 final Element ack = tagReader.readElement(nextTag);
441 lastPacketReceived = SystemClock.elapsedRealtime();
442 try {
443 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
444 acknowledgeStanzaUpTo(serverSequence);
445 } catch (NumberFormatException e) {
446 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": server send ack without sequence number");
447 }
448 } else if (nextTag.isStart("failed")) {
449 tagReader.readElement(nextTag);
450 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": resumption failed");
451 streamId = null;
452 if (account.getStatus() != Account.State.ONLINE) {
453 sendBindRequest();
454 }
455 } else if (nextTag.isStart("iq")) {
456 processIq(nextTag);
457 } else if (nextTag.isStart("message")) {
458 processMessage(nextTag);
459 } else if (nextTag.isStart("presence")) {
460 processPresence(nextTag);
461 }
462 nextTag = tagReader.readTag();
463 }
464 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": last tag was "+nextTag);
465 if (account.getStatus() == Account.State.ONLINE) {
466 account. setStatus(Account.State.OFFLINE);
467 if (statusListener != null) {
468 statusListener.onStatusChanged(account);
469 }
470 }
471 }
472
473 private void acknowledgeStanzaUpTo(int serverCount) {
474 for (int i = 0; i < mStanzaQueue.size(); ++i) {
475 if (serverCount >= mStanzaQueue.keyAt(i)) {
476 if (Config.EXTENDED_SM_LOGGING) {
477 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
478 }
479 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
480 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
481 MessagePacket packet = (MessagePacket) stanza;
482 acknowledgedListener.onMessageAcknowledged(account, packet.getId());
483 }
484 mStanzaQueue.removeAt(i);
485 i--;
486 }
487 }
488 }
489
490 private Element processPacket(final Tag currentTag, final int packetType)
491 throws XmlPullParserException, IOException {
492 Element element;
493 switch (packetType) {
494 case PACKET_IQ:
495 element = new IqPacket();
496 break;
497 case PACKET_MESSAGE:
498 element = new MessagePacket();
499 break;
500 case PACKET_PRESENCE:
501 element = new PresencePacket();
502 break;
503 default:
504 return null;
505 }
506 element.setAttributes(currentTag.getAttributes());
507 Tag nextTag = tagReader.readTag();
508 if (nextTag == null) {
509 throw new IOException("interrupted mid tag");
510 }
511 while (!nextTag.isEnd(element.getName())) {
512 if (!nextTag.isNo()) {
513 final Element child = tagReader.readElement(nextTag);
514 final String type = currentTag.getAttribute("type");
515 if (packetType == PACKET_IQ
516 && "jingle".equals(child.getName())
517 && ("set".equalsIgnoreCase(type) || "get"
518 .equalsIgnoreCase(type))) {
519 element = new JinglePacket();
520 element.setAttributes(currentTag.getAttributes());
521 }
522 element.addChild(child);
523 }
524 nextTag = tagReader.readTag();
525 if (nextTag == null) {
526 throw new IOException("interrupted mid tag");
527 }
528 }
529 if (stanzasReceived == Integer.MAX_VALUE) {
530 resetStreamId();
531 throw new IOException("time to restart the session. cant handle >2 billion pcks");
532 }
533 ++stanzasReceived;
534 lastPacketReceived = SystemClock.elapsedRealtime();
535 return element;
536 }
537
538 private void processIq(final Tag currentTag) throws XmlPullParserException, IOException {
539 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
540
541 if (packet.getId() == null) {
542 return; // an iq packet without id is definitely invalid
543 }
544
545 if (packet instanceof JinglePacket) {
546 if (this.jingleListener != null) {
547 this.jingleListener.onJinglePacketReceived(account,(JinglePacket) packet);
548 }
549 } else {
550 OnIqPacketReceived callback = null;
551 synchronized (this.packetCallbacks) {
552 if (packetCallbacks.containsKey(packet.getId())) {
553 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
554 // Packets to the server should have responses from the server
555 if (packetCallbackDuple.first.toServer(account)) {
556 if (packet.fromServer(account) || account.getJid().getDomainpart().equals("chat.facebook.com")) {
557 callback = packetCallbackDuple.second;
558 packetCallbacks.remove(packet.getId());
559 } else {
560 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
561 }
562 } else {
563 if (packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
564 callback = packetCallbackDuple.second;
565 packetCallbacks.remove(packet.getId());
566 } else {
567 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
568 }
569 }
570 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
571 callback = this.unregisteredIqListener;
572 }
573 }
574 if (callback != null) {
575 callback.onIqPacketReceived(account,packet);
576 }
577 }
578 }
579
580 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
581 final MessagePacket packet = (MessagePacket) processPacket(currentTag,PACKET_MESSAGE);
582 this.messageListener.onMessagePacketReceived(account, packet);
583 }
584
585 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
586 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
587 this.presenceListener.onPresencePacketReceived(account, packet);
588 }
589
590 private void sendStartTLS() throws IOException {
591 final Tag startTLS = Tag.empty("starttls");
592 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
593 tagWriter.writeTag(startTLS);
594 }
595
596 private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
597 tagReader.readTag();
598 try {
599 final SSLContext sc = SSLContext.getInstance("TLS");
600 MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
601 KeyManager[] keyManager;
602 if (account.getPrivateKeyAlias() != null && account.getPassword().isEmpty()) {
603 keyManager = new KeyManager[]{ mKeyManager };
604 } else {
605 keyManager = null;
606 }
607 sc.init(keyManager,new X509TrustManager[]{mInteractive ? trustManager : trustManager.getNonInteractive()},mXmppConnectionService.getRNG());
608 final SSLSocketFactory factory = sc.getSocketFactory();
609 final HostnameVerifier verifier;
610 if (mInteractive) {
611 verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier());
612 } else {
613 verifier = trustManager.wrapHostnameVerifierNonInteractive(new XmppDomainVerifier());
614 }
615 final InetAddress address = socket == null ? null : socket.getInetAddress();
616
617 if (factory == null || address == null || verifier == null) {
618 throw new IOException("could not setup ssl");
619 }
620
621 final SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,address.getHostAddress(), socket.getPort(),true);
622
623 if (sslSocket == null) {
624 throw new IOException("could not initialize ssl socket");
625 }
626
627 final String[] supportProtocols;
628 final Collection<String> supportedProtocols = new LinkedList<>(
629 Arrays.asList(sslSocket.getSupportedProtocols()));
630 supportedProtocols.remove("SSLv3");
631 supportProtocols = supportedProtocols.toArray(new String[supportedProtocols.size()]);
632
633 sslSocket.setEnabledProtocols(supportProtocols);
634
635 final String[] cipherSuites = CryptoHelper.getOrderedCipherSuites(
636 sslSocket.getSupportedCipherSuites());
637 //Log.d(Config.LOGTAG, "Using ciphers: " + Arrays.toString(cipherSuites));
638 if (cipherSuites.length > 0) {
639 sslSocket.setEnabledCipherSuites(cipherSuites);
640 }
641
642 if (!verifier.verify(account.getServer().getDomainpart(),sslSocket.getSession())) {
643 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": TLS certificate verification failed");
644 throw new SecurityException();
645 }
646 tagReader.setInputStream(sslSocket.getInputStream());
647 tagWriter.setOutputStream(sslSocket.getOutputStream());
648 sendStartStream();
649 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": TLS connection established");
650 features.encryptionEnabled = true;
651 final Tag tag = tagReader.readTag();
652 if (tag != null && tag.isStart("stream")) {
653 processStream();
654 } else {
655 throw new IOException("server didn't restart stream after STARTTLS");
656 }
657 sslSocket.close();
658 } catch (final NoSuchAlgorithmException | KeyManagementException e1) {
659 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": TLS certificate verification failed");
660 throw new SecurityException();
661 }
662 }
663
664 private void processStreamFeatures(final Tag currentTag)
665 throws XmlPullParserException, IOException {
666 this.streamFeatures = tagReader.readElement(currentTag);
667 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
668 sendStartTLS();
669 } else if (this.streamFeatures.hasChild("register")
670 && account.isOptionSet(Account.OPTION_REGISTER)
671 && features.encryptionEnabled) {
672 sendRegistryRequest();
673 } else if (!this.streamFeatures.hasChild("register")
674 && account.isOptionSet(Account.OPTION_REGISTER)) {
675 changeStatus(Account.State.REGISTRATION_NOT_SUPPORTED);
676 disconnect(true);
677 } else if (this.streamFeatures.hasChild("mechanisms")
678 && shouldAuthenticate && features.encryptionEnabled) {
679 final List<String> mechanisms = extractMechanisms(streamFeatures
680 .findChild("mechanisms"));
681 final Element auth = new Element("auth");
682 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
683 if (mechanisms.contains("EXTERNAL") && account.getPrivateKeyAlias() != null) {
684 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
685 } else if (mechanisms.contains("SCRAM-SHA-1")) {
686 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
687 } else if (mechanisms.contains("PLAIN")) {
688 saslMechanism = new Plain(tagWriter, account);
689 } else if (mechanisms.contains("DIGEST-MD5")) {
690 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
691 }
692 if (saslMechanism != null) {
693 final JSONObject keys = account.getKeys();
694 try {
695 if (keys.has(Account.PINNED_MECHANISM_KEY) &&
696 keys.getInt(Account.PINNED_MECHANISM_KEY) > saslMechanism.getPriority()) {
697 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
698 " has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
699 ") than pinned priority (" + keys.getInt(Account.PINNED_MECHANISM_KEY) +
700 "). Possible downgrade attack?");
701 throw new SecurityException();
702 }
703 } catch (final JSONException e) {
704 Log.d(Config.LOGTAG, "Parse error while checking pinned auth mechanism");
705 }
706 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
707 auth.setAttribute("mechanism", saslMechanism.getMechanism());
708 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
709 auth.setContent(saslMechanism.getClientFirstMessage());
710 }
711 tagWriter.writeElement(auth);
712 } else {
713 throw new IncompatibleServerException();
714 }
715 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
716 if (Config.EXTENDED_SM_LOGGING) {
717 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": resuming after stanza #"+stanzasReceived);
718 }
719 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
720 this.tagWriter.writeStanzaAsync(resume);
721 } else if (needsBinding) {
722 if (this.streamFeatures.hasChild("bind")) {
723 sendBindRequest();
724 } else {
725 throw new IncompatibleServerException();
726 }
727 }
728 }
729
730 private List<String> extractMechanisms(final Element stream) {
731 final ArrayList<String> mechanisms = new ArrayList<>(stream
732 .getChildren().size());
733 for (final Element child : stream.getChildren()) {
734 mechanisms.add(child.getContent());
735 }
736 return mechanisms;
737 }
738
739 public void sendCaptchaRegistryRequest(String id, Data data) {
740 if (data == null) {
741 setAccountCreationFailed("");
742 } else {
743 IqPacket request = getIqGenerator().generateCreateAccountWithCaptcha(account, id, data);
744 sendIqPacket(request, createPacketReceiveHandler());
745 }
746 }
747
748 private void sendRegistryRequest() {
749 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
750 register.query("jabber:iq:register");
751 register.setTo(account.getServer());
752 sendIqPacket(register, new OnIqPacketReceived() {
753
754 @Override
755 public void onIqPacketReceived(final Account account, final IqPacket packet) {
756 boolean failed = false;
757 if (packet.getType() == IqPacket.TYPE.RESULT
758 && packet.query().hasChild("username")
759 && (packet.query().hasChild("password"))) {
760 final IqPacket register = new IqPacket(IqPacket.TYPE.SET);
761 final Element username = new Element("username").setContent(account.getUsername());
762 final Element password = new Element("password").setContent(account.getPassword());
763 register.query("jabber:iq:register").addChild(username);
764 register.query().addChild(password);
765 sendIqPacket(register, createPacketReceiveHandler());
766 } else if (packet.getType() == IqPacket.TYPE.RESULT
767 && (packet.query().hasChild("x", "jabber:x:data"))) {
768 final Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
769 final Element blob = packet.query().findChild("data", "urn:xmpp:bob");
770 final String id = packet.getId();
771
772 Bitmap captcha = null;
773 if (blob != null) {
774 try {
775 final String base64Blob = blob.getContent();
776 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
777 InputStream stream = new ByteArrayInputStream(strBlob);
778 captcha = BitmapFactory.decodeStream(stream);
779 } catch (Exception e) {
780 //ignored
781 }
782 } else {
783 try {
784 Field url = data.getFieldByName("url");
785 String urlString = url.findChildContent("value");
786 URL uri = new URL(urlString);
787 captcha = BitmapFactory.decodeStream(uri.openConnection().getInputStream());
788 } catch (IOException e) {
789 Log.e(Config.LOGTAG, e.toString());
790 }
791 }
792
793 if (captcha != null) {
794 failed = !mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha);
795 }
796 } else {
797 failed = true;
798 }
799
800 if (failed) {
801 final Element instructions = packet.query().findChild("instructions");
802 setAccountCreationFailed((instructions != null) ? instructions.getContent() : "");
803 }
804 }
805 });
806 }
807
808 private void setAccountCreationFailed(String instructions) {
809 changeStatus(Account.State.REGISTRATION_FAILED);
810 disconnect(true);
811 Log.d(Config.LOGTAG, account.getJid().toBareJid()
812 + ": could not register. instructions are"
813 + instructions);
814 }
815
816 private void sendBindRequest() {
817 while(!mXmppConnectionService.areMessagesInitialized() && socket != null && !socket.isClosed()) {
818 try {
819 Thread.sleep(500);
820 } catch (final InterruptedException ignored) {
821 }
822 }
823 needsBinding = false;
824 clearIqCallbacks();
825 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
826 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
827 .addChild("resource").setContent(account.getResource());
828 this.sendUnmodifiedIqPacket(iq, new OnIqPacketReceived() {
829 @Override
830 public void onIqPacketReceived(final Account account, final IqPacket packet) {
831 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
832 return;
833 }
834 final Element bind = packet.findChild("bind");
835 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
836 final Element jid = bind.findChild("jid");
837 if (jid != null && jid.getContent() != null) {
838 try {
839 account.setResource(Jid.fromString(jid.getContent()).getResourcepart());
840 } catch (final InvalidJidException e) {
841 // TODO: Handle the case where an external JID is technically invalid?
842 }
843 if (streamFeatures.hasChild("session")) {
844 sendStartSession();
845 } else {
846 sendPostBindInitialization();
847 }
848 } else {
849 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure");
850 disconnect(true);
851 }
852 } else {
853 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure");
854 disconnect(true);
855 }
856 }
857 });
858 }
859
860 private void clearIqCallbacks() {
861 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
862 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
863 synchronized (this.packetCallbacks) {
864 if (this.packetCallbacks.size() == 0) {
865 return;
866 }
867 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": clearing "+this.packetCallbacks.size()+" iq callbacks");
868 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
869 while (iterator.hasNext()) {
870 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
871 callbacks.add(entry.second);
872 iterator.remove();
873 }
874 }
875 for(OnIqPacketReceived callback : callbacks) {
876 callback.onIqPacketReceived(account,failurePacket);
877 }
878 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
879 }
880
881 private void sendStartSession() {
882 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
883 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
884 this.sendUnmodifiedIqPacket(startSession, new OnIqPacketReceived() {
885 @Override
886 public void onIqPacketReceived(Account account, IqPacket packet) {
887 if (packet.getType() == IqPacket.TYPE.RESULT) {
888 sendPostBindInitialization();
889 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
890 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not init sessions");
891 disconnect(true);
892 }
893 }
894 });
895 }
896
897 private void sendPostBindInitialization() {
898 smVersion = 0;
899 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
900 smVersion = 3;
901 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
902 smVersion = 2;
903 }
904 if (smVersion != 0) {
905 final EnablePacket enable = new EnablePacket(smVersion);
906 tagWriter.writeStanzaAsync(enable);
907 stanzasSent = 0;
908 mStanzaQueue.clear();
909 }
910 features.carbonsEnabled = false;
911 features.blockListRequested = false;
912 synchronized (this.disco) {
913 this.disco.clear();
914 }
915 sendServiceDiscoveryInfo(account.getServer());
916 sendServiceDiscoveryInfo(account.getJid().toBareJid());
917 sendServiceDiscoveryItems(account.getServer());
918 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": online with resource " + account.getResource());
919 this.lastSessionStarted = SystemClock.elapsedRealtime();
920 changeStatus(Account.State.ONLINE);
921 if (bindListener != null) {
922 bindListener.onBind(account);
923 }
924 }
925
926 private void sendServiceDiscoveryInfo(final Jid jid) {
927 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
928 iq.setTo(jid);
929 iq.query("http://jabber.org/protocol/disco#info");
930 this.sendIqPacket(iq, new OnIqPacketReceived() {
931
932 @Override
933 public void onIqPacketReceived(final Account account, final IqPacket packet) {
934 if (packet.getType() == IqPacket.TYPE.RESULT) {
935 boolean advancedStreamFeaturesLoaded = false;
936 synchronized (XmppConnection.this.disco) {
937 final List<Element> elements = packet.query().getChildren();
938 final Info info = new Info();
939 for (final Element element : elements) {
940 if (element.getName().equals("identity")) {
941 String type = element.getAttribute("type");
942 String category = element.getAttribute("category");
943 if (type != null && category != null) {
944 info.identities.add(new Pair<>(category, type));
945 }
946 } else if (element.getName().equals("feature")) {
947 info.features.add(element.getAttribute("var"));
948 }
949 }
950 disco.put(jid, info);
951 advancedStreamFeaturesLoaded = disco.containsKey(account.getServer())
952 && disco.containsKey(account.getJid().toBareJid());
953 }
954 if (advancedStreamFeaturesLoaded && (jid.equals(account.getServer()) || jid.equals(account.getJid().toBareJid()))) {
955 enableAdvancedStreamFeatures();
956 }
957 } else {
958 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not query disco info for " + jid.toString());
959 }
960 }
961 });
962 }
963
964 private void enableAdvancedStreamFeatures() {
965 if (getFeatures().carbons() && !features.carbonsEnabled) {
966 sendEnableCarbons();
967 }
968 if (getFeatures().blocking() && !features.blockListRequested) {
969 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": Requesting block list");
970 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
971 }
972 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
973 listener.onAdvancedStreamFeaturesAvailable(account);
974 }
975 }
976
977 private void sendServiceDiscoveryItems(final Jid server) {
978 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
979 iq.setTo(server.toDomainJid());
980 iq.query("http://jabber.org/protocol/disco#items");
981 this.sendIqPacket(iq, new OnIqPacketReceived() {
982
983 @Override
984 public void onIqPacketReceived(final Account account, final IqPacket packet) {
985 if (packet.getType() == IqPacket.TYPE.RESULT) {
986 final List<Element> elements = packet.query().getChildren();
987 for (final Element element : elements) {
988 if (element.getName().equals("item")) {
989 final Jid jid = element.getAttributeAsJid("jid");
990 if (jid != null && !jid.equals(account.getServer())) {
991 sendServiceDiscoveryInfo(jid);
992 }
993 }
994 }
995 } else {
996 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": could not query disco items of "+server);
997 }
998 }
999 });
1000 }
1001
1002 private void sendEnableCarbons() {
1003 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1004 iq.addChild("enable", "urn:xmpp:carbons:2");
1005 this.sendIqPacket(iq, new OnIqPacketReceived() {
1006
1007 @Override
1008 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1009 if (!packet.hasChild("error")) {
1010 Log.d(Config.LOGTAG, account.getJid().toBareJid()
1011 + ": successfully enabled carbons");
1012 features.carbonsEnabled = true;
1013 } else {
1014 Log.d(Config.LOGTAG, account.getJid().toBareJid()
1015 + ": error enableing carbons " + packet.toString());
1016 }
1017 }
1018 });
1019 }
1020
1021 private void processStreamError(final Tag currentTag)
1022 throws XmlPullParserException, IOException {
1023 final Element streamError = tagReader.readElement(currentTag);
1024 if (streamError != null && streamError.hasChild("conflict")) {
1025 final String resource = account.getResource().split("\\.")[0];
1026 account.setResource(resource + "." + nextRandomId());
1027 Log.d(Config.LOGTAG,
1028 account.getJid().toBareJid() + ": switching resource due to conflict ("
1029 + account.getResource() + ")");
1030 } else if (streamError != null) {
1031 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": stream error "+streamError.toString());
1032 }
1033 }
1034
1035 private void sendStartStream() throws IOException {
1036 final Tag stream = Tag.start("stream:stream");
1037 stream.setAttribute("to", account.getServer().toString());
1038 stream.setAttribute("version", "1.0");
1039 stream.setAttribute("xml:lang", "en");
1040 stream.setAttribute("xmlns", "jabber:client");
1041 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1042 tagWriter.writeTag(stream);
1043 }
1044
1045 private String nextRandomId() {
1046 return new BigInteger(50, mXmppConnectionService.getRNG()).toString(32);
1047 }
1048
1049 public void sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1050 packet.setFrom(account.getJid());
1051 this.sendUnmodifiedIqPacket(packet, callback);
1052
1053 }
1054
1055 private synchronized void sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1056 if (packet.getId() == null) {
1057 final String id = nextRandomId();
1058 packet.setAttribute("id", id);
1059 }
1060 if (callback != null) {
1061 synchronized (this.packetCallbacks) {
1062 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1063 }
1064 }
1065 this.sendPacket(packet);
1066 }
1067
1068 public void sendMessagePacket(final MessagePacket packet) {
1069 this.sendPacket(packet);
1070 }
1071
1072 public void sendPresencePacket(final PresencePacket packet) {
1073 this.sendPacket(packet);
1074 }
1075
1076 private synchronized void sendPacket(final AbstractStanza packet) {
1077 if (stanzasSent == Integer.MAX_VALUE) {
1078 resetStreamId();
1079 disconnect(true);
1080 return;
1081 }
1082 tagWriter.writeStanzaAsync(packet);
1083 if (packet instanceof AbstractAcknowledgeableStanza) {
1084 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1085 ++stanzasSent;
1086 this.mStanzaQueue.put(stanzasSent, stanza);
1087 if (stanza instanceof MessagePacket && stanza.getId() != null && getFeatures().sm()) {
1088 if (Config.EXTENDED_SM_LOGGING) {
1089 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1090 }
1091 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1092 }
1093 }
1094 }
1095
1096 public void sendPing() {
1097 if (!r()) {
1098 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1099 iq.setFrom(account.getJid());
1100 iq.addChild("ping", "urn:xmpp:ping");
1101 this.sendIqPacket(iq, null);
1102 }
1103 this.lastPingSent = SystemClock.elapsedRealtime();
1104 }
1105
1106 public void setOnMessagePacketReceivedListener(
1107 final OnMessagePacketReceived listener) {
1108 this.messageListener = listener;
1109 }
1110
1111 public void setOnUnregisteredIqPacketReceivedListener(
1112 final OnIqPacketReceived listener) {
1113 this.unregisteredIqListener = listener;
1114 }
1115
1116 public void setOnPresencePacketReceivedListener(
1117 final OnPresencePacketReceived listener) {
1118 this.presenceListener = listener;
1119 }
1120
1121 public void setOnJinglePacketReceivedListener(
1122 final OnJinglePacketReceived listener) {
1123 this.jingleListener = listener;
1124 }
1125
1126 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1127 this.statusListener = listener;
1128 }
1129
1130 public void setOnBindListener(final OnBindListener listener) {
1131 this.bindListener = listener;
1132 }
1133
1134 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1135 this.acknowledgedListener = listener;
1136 }
1137
1138 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1139 if (!this.advancedStreamFeaturesLoadedListeners.contains(listener)) {
1140 this.advancedStreamFeaturesLoadedListeners.add(listener);
1141 }
1142 }
1143
1144 public void disconnect(final boolean force) {
1145 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": disconnecting force="+Boolean.valueOf(force));
1146 if (force) {
1147 try {
1148 socket.close();
1149 } catch(Exception e) {
1150 Log.d(Config.LOGTAG,account.getJid().toBareJid().toString()+": exception during force close ("+e.getMessage()+")");
1151 }
1152 return;
1153 } else {
1154 resetStreamId();
1155 if (tagWriter.isActive()) {
1156 tagWriter.finish();
1157 try {
1158 int i = 0;
1159 boolean warned = false;
1160 while (!tagWriter.finished() && socket.isConnected() && i <= 10) {
1161 if (!warned) {
1162 Log.d(Config.LOGTAG, account.getJid().toBareJid()+": waiting for tag writer to finish");
1163 warned = true;
1164 }
1165 Thread.sleep(200);
1166 i++;
1167 }
1168 if (warned) {
1169 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": tag writer has finished");
1170 }
1171 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": closing stream");
1172 tagWriter.writeTag(Tag.end("stream:stream"));
1173 } catch (final IOException e) {
1174 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": io exception during disconnect ("+e.getMessage()+")");
1175 } catch (final InterruptedException e) {
1176 Log.d(Config.LOGTAG, "interrupted");
1177 }
1178 }
1179 }
1180 }
1181
1182 public void resetStreamId() {
1183 this.streamId = null;
1184 }
1185
1186 public List<Jid> findDiscoItemsByFeature(final String feature) {
1187 synchronized (this.disco) {
1188 final List<Jid> items = new ArrayList<>();
1189 for (final Entry<Jid, Info> cursor : this.disco.entrySet()) {
1190 if (cursor.getValue().features.contains(feature)) {
1191 items.add(cursor.getKey());
1192 }
1193 }
1194 return items;
1195 }
1196 }
1197
1198 public Jid findDiscoItemByFeature(final String feature) {
1199 final List<Jid> items = findDiscoItemsByFeature(feature);
1200 if (items.size() >= 1) {
1201 return items.get(0);
1202 }
1203 return null;
1204 }
1205
1206 public boolean r() {
1207 if (getFeatures().sm()) {
1208 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1209 return true;
1210 } else {
1211 return false;
1212 }
1213 }
1214
1215 public String getMucServer() {
1216 synchronized (this.disco) {
1217 for (final Entry<Jid, Info> cursor : disco.entrySet()) {
1218 final Info value = cursor.getValue();
1219 if (value.features.contains("http://jabber.org/protocol/muc")
1220 && !value.features.contains("jabber:iq:gateway")
1221 && !value.identities.contains(new Pair<>("conference", "irc"))) {
1222 return cursor.getKey().toString();
1223 }
1224 }
1225 }
1226 return null;
1227 }
1228
1229 public int getTimeToNextAttempt() {
1230 final int interval = (int) (25 * Math.pow(1.5, attempt));
1231 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1232 return interval - secondsSinceLast;
1233 }
1234
1235 public int getAttempt() {
1236 return this.attempt;
1237 }
1238
1239 public Features getFeatures() {
1240 return this.features;
1241 }
1242
1243 public long getLastSessionEstablished() {
1244 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1245 return System.currentTimeMillis() - diff;
1246 }
1247
1248 public long getLastConnect() {
1249 return this.lastConnect;
1250 }
1251
1252 public long getLastPingSent() {
1253 return this.lastPingSent;
1254 }
1255
1256 public long getLastPacketReceived() {
1257 return this.lastPacketReceived;
1258 }
1259
1260 public void sendActive() {
1261 this.sendPacket(new ActivePacket());
1262 }
1263
1264 public void sendInactive() {
1265 this.sendPacket(new InactivePacket());
1266 }
1267
1268 public void resetAttemptCount() {
1269 this.attempt = 0;
1270 this.lastConnect = 0;
1271 }
1272
1273 public void setInteractive(boolean interactive) {
1274 this.mInteractive = interactive;
1275 }
1276
1277 private class Info {
1278 public final ArrayList<String> features = new ArrayList<>();
1279 public final ArrayList<Pair<String,String>> identities = new ArrayList<>();
1280 }
1281
1282 private class UnauthorizedException extends IOException {
1283
1284 }
1285
1286 private class SecurityException extends IOException {
1287
1288 }
1289
1290 private class IncompatibleServerException extends IOException {
1291
1292 }
1293
1294 private class DnsTimeoutException extends IOException {
1295
1296 }
1297
1298 public class Features {
1299 XmppConnection connection;
1300 private boolean carbonsEnabled = false;
1301 private boolean encryptionEnabled = false;
1302 private boolean blockListRequested = false;
1303
1304 public Features(final XmppConnection connection) {
1305 this.connection = connection;
1306 }
1307
1308 private boolean hasDiscoFeature(final Jid server, final String feature) {
1309 synchronized (XmppConnection.this.disco) {
1310 return connection.disco.containsKey(server) &&
1311 connection.disco.get(server).features.contains(feature);
1312 }
1313 }
1314
1315 public boolean carbons() {
1316 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
1317 }
1318
1319 public boolean blocking() {
1320 return hasDiscoFeature(account.getServer(), Xmlns.BLOCKING);
1321 }
1322
1323 public boolean register() {
1324 return hasDiscoFeature(account.getServer(), Xmlns.REGISTER);
1325 }
1326
1327 public boolean sm() {
1328 return streamId != null
1329 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1330 }
1331
1332 public boolean csi() {
1333 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1334 }
1335
1336 public boolean pep() {
1337 synchronized (XmppConnection.this.disco) {
1338 final Pair<String, String> needle = new Pair<>("pubsub", "pep");
1339 Info info = disco.get(account.getServer());
1340 if (info != null && info.identities.contains(needle)) {
1341 return true;
1342 } else {
1343 info = disco.get(account.getJid().toBareJid());
1344 return info != null && info.identities.contains(needle);
1345 }
1346 }
1347 }
1348
1349 public boolean mam() {
1350 if (hasDiscoFeature(account.getJid().toBareJid(), "urn:xmpp:mam:0")) {
1351 return true;
1352 } else {
1353 return hasDiscoFeature(account.getServer(), "urn:xmpp:mam:0");
1354 }
1355 }
1356
1357 public boolean advancedStreamFeaturesLoaded() {
1358 synchronized (XmppConnection.this.disco) {
1359 return disco.containsKey(account.getServer());
1360 }
1361 }
1362
1363 public boolean rosterVersioning() {
1364 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1365 }
1366
1367 public void setBlockListRequested(boolean value) {
1368 this.blockListRequested = value;
1369 }
1370
1371 public boolean httpUpload() {
1372 return !Config.DISABLE_HTTP_UPLOAD && findDiscoItemsByFeature(Xmlns.HTTP_UPLOAD).size() > 0;
1373 }
1374 }
1375
1376 private IqGenerator getIqGenerator() {
1377 return mXmppConnectionService.getIqGenerator();
1378 }
1379}