1package eu.siacs.conversations.xmpp;
2
3import android.content.Intent;
4import android.graphics.Bitmap;
5import android.graphics.BitmapFactory;
6import android.net.wifi.WifiConfiguration;
7import android.os.Bundle;
8import android.os.Parcelable;
9import android.os.PowerManager;
10import android.os.PowerManager.WakeLock;
11import android.os.SystemClock;
12import android.security.KeyChain;
13import android.security.KeyChainException;
14import android.util.Base64;
15import android.util.Log;
16import android.util.Pair;
17import android.util.SparseArray;
18
19import org.apache.http.conn.ssl.StrictHostnameVerifier;
20import org.json.JSONException;
21import org.json.JSONObject;
22import org.xmlpull.v1.XmlPullParserException;
23
24import java.io.ByteArrayInputStream;
25import java.io.IOException;
26import java.io.InputStream;
27import java.io.OutputStream;
28import java.math.BigInteger;
29import java.net.ConnectException;
30import java.net.IDN;
31import java.net.InetAddress;
32import java.net.InetSocketAddress;
33import java.net.Socket;
34import java.net.UnknownHostException;
35import java.net.MalformedURLException;
36import java.net.URL;
37import java.security.KeyManagementException;
38import java.security.KeyStore;
39import java.security.KeyStoreException;
40import java.security.NoSuchAlgorithmException;
41import java.security.Principal;
42import java.security.PrivateKey;
43import java.security.cert.X509Certificate;
44import java.util.ArrayList;
45import java.util.Arrays;
46import java.util.Collection;
47import java.util.HashMap;
48import java.util.Hashtable;
49import java.util.Iterator;
50import java.util.LinkedList;
51import java.util.List;
52import java.util.Map.Entry;
53
54import javax.net.ssl.HostnameVerifier;
55import javax.net.ssl.KeyManager;
56import javax.net.ssl.SSLContext;
57import javax.net.ssl.SSLSocket;
58import javax.net.ssl.SSLSocketFactory;
59import javax.net.ssl.X509KeyManager;
60import javax.net.ssl.X509TrustManager;
61
62import de.duenndns.ssl.MemorizingTrustManager;
63import eu.siacs.conversations.Config;
64import eu.siacs.conversations.crypto.sasl.DigestMd5;
65import eu.siacs.conversations.crypto.sasl.External;
66import eu.siacs.conversations.crypto.sasl.Plain;
67import eu.siacs.conversations.crypto.sasl.SaslMechanism;
68import eu.siacs.conversations.crypto.sasl.ScramSha1;
69import eu.siacs.conversations.entities.Account;
70import eu.siacs.conversations.entities.Message;
71import eu.siacs.conversations.generator.IqGenerator;
72import eu.siacs.conversations.services.XmppConnectionService;
73import eu.siacs.conversations.utils.CryptoHelper;
74import eu.siacs.conversations.utils.DNSHelper;
75import eu.siacs.conversations.utils.Xmlns;
76import eu.siacs.conversations.xml.Element;
77import eu.siacs.conversations.xml.Tag;
78import eu.siacs.conversations.xml.TagWriter;
79import eu.siacs.conversations.xml.XmlReader;
80import eu.siacs.conversations.xmpp.forms.Data;
81import eu.siacs.conversations.xmpp.forms.Field;
82import eu.siacs.conversations.xmpp.jid.InvalidJidException;
83import eu.siacs.conversations.xmpp.jid.Jid;
84import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
85import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
86import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
87import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
88import eu.siacs.conversations.xmpp.stanzas.IqPacket;
89import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
90import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
91import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
92import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
93import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
94import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
95import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
96import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
97
98public class XmppConnection implements Runnable {
99
100 private static final int PACKET_IQ = 0;
101 private static final int PACKET_MESSAGE = 1;
102 private static final int PACKET_PRESENCE = 2;
103 protected Account account;
104 private final WakeLock wakeLock;
105 private Socket socket;
106 private XmlReader tagReader;
107 private TagWriter tagWriter;
108 private final Features features = new Features(this);
109 private boolean needsBinding = true;
110 private boolean shouldAuthenticate = true;
111 private Element streamFeatures;
112 private final HashMap<Jid, Info> disco = new HashMap<>();
113
114 private String streamId = null;
115 private int smVersion = 3;
116 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
117
118 private int stanzasReceived = 0;
119 private int stanzasSent = 0;
120 private long lastPacketReceived = 0;
121 private long lastPingSent = 0;
122 private long lastConnect = 0;
123 private long lastSessionStarted = 0;
124 private boolean mInteractive = false;
125 private int attempt = 0;
126 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
127 private OnPresencePacketReceived presenceListener = null;
128 private OnJinglePacketReceived jingleListener = null;
129 private OnIqPacketReceived unregisteredIqListener = null;
130 private OnMessagePacketReceived messageListener = null;
131 private OnStatusChanged statusListener = null;
132 private OnBindListener bindListener = null;
133 private final ArrayList<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new ArrayList<>();
134 private OnMessageAcknowledged acknowledgedListener = null;
135 private XmppConnectionService mXmppConnectionService = null;
136
137 private SaslMechanism saslMechanism;
138
139 private X509KeyManager mKeyManager = new X509KeyManager() {
140 @Override
141 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
142 return account.getPrivateKeyAlias();
143 }
144
145 @Override
146 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
147 return null;
148 }
149
150 @Override
151 public X509Certificate[] getCertificateChain(String alias) {
152 try {
153 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
154 } catch (Exception e) {
155 return new X509Certificate[0];
156 }
157 }
158
159 @Override
160 public String[] getClientAliases(String s, Principal[] principals) {
161 return new String[0];
162 }
163
164 @Override
165 public String[] getServerAliases(String s, Principal[] principals) {
166 return new String[0];
167 }
168
169 @Override
170 public PrivateKey getPrivateKey(String alias) {
171 try {
172 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
173 } catch (Exception e) {
174 return null;
175 }
176 }
177 };
178
179 private OnIqPacketReceived createPacketReceiveHandler() {
180 OnIqPacketReceived receiver = new OnIqPacketReceived() {
181 @Override
182 public void onIqPacketReceived(Account account, IqPacket packet) {
183 if (packet.getType() == IqPacket.TYPE.RESULT) {
184 account.setOption(Account.OPTION_REGISTER,
185 false);
186 changeStatus(Account.State.REGISTRATION_SUCCESSFUL);
187 } else if (packet.hasChild("error")
188 && (packet.findChild("error")
189 .hasChild("conflict"))) {
190 changeStatus(Account.State.REGISTRATION_CONFLICT);
191 } else {
192 changeStatus(Account.State.REGISTRATION_FAILED);
193 Log.d(Config.LOGTAG, packet.toString());
194 }
195 disconnect(true);
196 }
197 };
198
199 return receiver;
200 }
201
202 public XmppConnection(final Account account, final XmppConnectionService service) {
203 this.account = account;
204 this.wakeLock = service.getPowerManager().newWakeLock(
205 PowerManager.PARTIAL_WAKE_LOCK, account.getJid().toBareJid().toString());
206 tagWriter = new TagWriter();
207 mXmppConnectionService = service;
208 }
209
210 protected void changeStatus(final Account.State nextStatus) {
211 if (account.getStatus() != nextStatus) {
212 if ((nextStatus == Account.State.OFFLINE)
213 && (account.getStatus() != Account.State.CONNECTING)
214 && (account.getStatus() != Account.State.ONLINE)
215 && (account.getStatus() != Account.State.DISABLED)) {
216 return;
217 }
218 if (nextStatus == Account.State.ONLINE) {
219 this.attempt = 0;
220 }
221 account.setStatus(nextStatus);
222 if (statusListener != null) {
223 statusListener.onStatusChanged(account);
224 }
225 }
226 }
227
228 protected void connect() {
229 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": connecting");
230 features.encryptionEnabled = false;
231 lastConnect = SystemClock.elapsedRealtime();
232 lastPingSent = SystemClock.elapsedRealtime();
233 this.attempt++;
234 try {
235 shouldAuthenticate = needsBinding = !account.isOptionSet(Account.OPTION_REGISTER);
236 tagReader = new XmlReader(wakeLock);
237 tagWriter = new TagWriter();
238 this.changeStatus(Account.State.CONNECTING);
239 if (DNSHelper.isIp(account.getServer().toString())) {
240 socket = new Socket();
241 try {
242 socket.connect(new InetSocketAddress(account.getServer().toString(), 5222), Config.SOCKET_TIMEOUT * 1000);
243 } catch (IOException e) {
244 throw new UnknownHostException();
245 }
246 } else {
247 final Bundle result = DNSHelper.getSRVRecord(account.getServer(),mXmppConnectionService);
248 final ArrayList<Parcelable> values = result.getParcelableArrayList("values");
249 int i = 0;
250 boolean socketError = true;
251 while (socketError && values.size() > i) {
252 final Bundle namePort = (Bundle) values.get(i);
253 try {
254 String srvRecordServer;
255 try {
256 srvRecordServer = IDN.toASCII(namePort.getString("name"));
257 } catch (final IllegalArgumentException e) {
258 // TODO: Handle me?`
259 srvRecordServer = "";
260 }
261 final int srvRecordPort = namePort.getInt("port");
262 final String srvIpServer = namePort.getString("ip");
263 final InetSocketAddress addr;
264 if (srvIpServer != null) {
265 addr = new InetSocketAddress(srvIpServer, srvRecordPort);
266 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
267 + ": using values from dns " + srvRecordServer
268 + "[" + srvIpServer + "]:" + srvRecordPort);
269 } else {
270 addr = new InetSocketAddress(srvRecordServer, srvRecordPort);
271 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
272 + ": using values from dns "
273 + srvRecordServer + ":" + srvRecordPort);
274 }
275 socket = new Socket();
276 socket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
277 socketError = false;
278 } catch (final Throwable e) {
279 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
280 i++;
281 }
282 }
283 if (socketError) {
284 throw new UnknownHostException();
285 }
286 }
287 final OutputStream out = socket.getOutputStream();
288 tagWriter.setOutputStream(out);
289 final InputStream in = socket.getInputStream();
290 tagReader.setInputStream(in);
291 tagWriter.beginDocument();
292 sendStartStream();
293 Tag nextTag;
294 while ((nextTag = tagReader.readTag()) != null) {
295 if (nextTag.isStart("stream")) {
296 processStream(nextTag);
297 break;
298 } else {
299 throw new IOException("unknown tag on connect");
300 }
301 }
302 if (socket.isConnected()) {
303 socket.close();
304 }
305 } catch (final IncompatibleServerException e) {
306 this.changeStatus(Account.State.INCOMPATIBLE_SERVER);
307 } catch (final SecurityException e) {
308 this.changeStatus(Account.State.SECURITY_ERROR);
309 } catch (final UnauthorizedException e) {
310 this.changeStatus(Account.State.UNAUTHORIZED);
311 } catch (final UnknownHostException | ConnectException e) {
312 this.changeStatus(Account.State.SERVER_NOT_FOUND);
313 } catch (final DnsTimeoutException e) {
314 this.changeStatus(Account.State.DNS_TIMEOUT);
315 } catch (final IOException | XmlPullParserException | NoSuchAlgorithmException e) {
316 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
317 this.changeStatus(Account.State.OFFLINE);
318 this.attempt--; //don't count attempt when reconnecting instantly anyway
319 } finally {
320 if (socket != null) {
321 try {
322 socket.close();
323 } catch (IOException e) {
324
325 }
326 }
327 if (wakeLock.isHeld()) {
328 try {
329 wakeLock.release();
330 } catch (final RuntimeException ignored) {
331 }
332 }
333 }
334 }
335
336 @Override
337 public void run() {
338 try {
339 if (socket != null) {
340 socket.close();
341 }
342 } catch (final IOException ignored) {
343
344 }
345 connect();
346 }
347
348 private void processStream(final Tag currentTag) throws XmlPullParserException,
349 IOException, NoSuchAlgorithmException {
350 Tag nextTag = tagReader.readTag();
351
352 while ((nextTag != null) && (!nextTag.isEnd("stream"))) {
353 if (nextTag.isStart("error")) {
354 processStreamError(nextTag);
355 } else if (nextTag.isStart("features")) {
356 processStreamFeatures(nextTag);
357 } else if (nextTag.isStart("proceed")) {
358 switchOverToTls(nextTag);
359 } else if (nextTag.isStart("success")) {
360 final String challenge = tagReader.readElement(nextTag).getContent();
361 try {
362 saslMechanism.getResponse(challenge);
363 } catch (final SaslMechanism.AuthenticationException e) {
364 disconnect(true);
365 Log.e(Config.LOGTAG, String.valueOf(e));
366 }
367 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": logged in");
368 account.setKey(Account.PINNED_MECHANISM_KEY,
369 String.valueOf(saslMechanism.getPriority()));
370 tagReader.reset();
371 sendStartStream();
372 processStream(tagReader.readTag());
373 break;
374 } else if (nextTag.isStart("failure")) {
375 throw new UnauthorizedException();
376 } else if (nextTag.isStart("challenge")) {
377 final String challenge = tagReader.readElement(nextTag).getContent();
378 final Element response = new Element("response");
379 response.setAttribute("xmlns",
380 "urn:ietf:params:xml:ns:xmpp-sasl");
381 try {
382 response.setContent(saslMechanism.getResponse(challenge));
383 } catch (final SaslMechanism.AuthenticationException e) {
384 // TODO: Send auth abort tag.
385 Log.e(Config.LOGTAG, e.toString());
386 }
387 tagWriter.writeElement(response);
388 } else if (nextTag.isStart("enabled")) {
389 final Element enabled = tagReader.readElement(nextTag);
390 if ("true".equals(enabled.getAttribute("resume"))) {
391 this.streamId = enabled.getAttribute("id");
392 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
393 + ": stream managment(" + smVersion
394 + ") enabled (resumable)");
395 } else {
396 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
397 + ": stream management(" + smVersion + ") enabled");
398 }
399 this.stanzasReceived = 0;
400 final RequestPacket r = new RequestPacket(smVersion);
401 tagWriter.writeStanzaAsync(r);
402 } else if (nextTag.isStart("resumed")) {
403 lastPacketReceived = SystemClock.elapsedRealtime();
404 final Element resumed = tagReader.readElement(nextTag);
405 final String h = resumed.getAttribute("h");
406 try {
407 final int serverCount = Integer.parseInt(h);
408 if (serverCount != stanzasSent) {
409 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
410 + ": session resumed with lost packages");
411 stanzasSent = serverCount;
412 } else {
413 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": session resumed");
414 }
415 acknowledgeStanzaUpTo(serverCount);
416 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
417 for(int i = 0; i < this.mStanzaQueue.size(); ++i) {
418 failedStanzas.add(mStanzaQueue.valueAt(i));
419 }
420 mStanzaQueue.clear();
421 Log.d(Config.LOGTAG,"resending "+failedStanzas.size()+" stanzas");
422 for(AbstractAcknowledgeableStanza packet : failedStanzas) {
423 if (packet instanceof MessagePacket) {
424 MessagePacket message = (MessagePacket) packet;
425 mXmppConnectionService.markMessage(account,
426 message.getTo().toBareJid(),
427 message.getId(),
428 Message.STATUS_UNSEND);
429 }
430 sendPacket(packet);
431 }
432 } catch (final NumberFormatException ignored) {
433 }
434 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": online with resource " + account.getResource());
435 changeStatus(Account.State.ONLINE);
436 } else if (nextTag.isStart("r")) {
437 tagReader.readElement(nextTag);
438 if (Config.EXTENDED_SM_LOGGING) {
439 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
440 }
441 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
442 tagWriter.writeStanzaAsync(ack);
443 } else if (nextTag.isStart("a")) {
444 final Element ack = tagReader.readElement(nextTag);
445 lastPacketReceived = SystemClock.elapsedRealtime();
446 try {
447 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
448 acknowledgeStanzaUpTo(serverSequence);
449 } catch (NumberFormatException e) {
450 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": server send ack without sequence number");
451 }
452 } else if (nextTag.isStart("failed")) {
453 tagReader.readElement(nextTag);
454 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": resumption failed");
455 streamId = null;
456 if (account.getStatus() != Account.State.ONLINE) {
457 sendBindRequest();
458 }
459 } else if (nextTag.isStart("iq")) {
460 processIq(nextTag);
461 } else if (nextTag.isStart("message")) {
462 processMessage(nextTag);
463 } else if (nextTag.isStart("presence")) {
464 processPresence(nextTag);
465 }
466 nextTag = tagReader.readTag();
467 }
468 if (account.getStatus() == Account.State.ONLINE) {
469 account. setStatus(Account.State.OFFLINE);
470 if (statusListener != null) {
471 statusListener.onStatusChanged(account);
472 }
473 }
474 }
475
476 private void acknowledgeStanzaUpTo(int serverCount) {
477 for (int i = 0; i < mStanzaQueue.size(); ++i) {
478 if (serverCount >= mStanzaQueue.keyAt(i)) {
479 if (Config.EXTENDED_SM_LOGGING) {
480 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
481 }
482 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
483 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
484 MessagePacket packet = (MessagePacket) stanza;
485 acknowledgedListener.onMessageAcknowledged(account, packet.getId());
486 }
487 mStanzaQueue.removeAt(i);
488 i--;
489 }
490 }
491 }
492
493 private Element processPacket(final Tag currentTag, final int packetType)
494 throws XmlPullParserException, IOException {
495 Element element;
496 switch (packetType) {
497 case PACKET_IQ:
498 element = new IqPacket();
499 break;
500 case PACKET_MESSAGE:
501 element = new MessagePacket();
502 break;
503 case PACKET_PRESENCE:
504 element = new PresencePacket();
505 break;
506 default:
507 return null;
508 }
509 element.setAttributes(currentTag.getAttributes());
510 Tag nextTag = tagReader.readTag();
511 if (nextTag == null) {
512 throw new IOException("interrupted mid tag");
513 }
514 while (!nextTag.isEnd(element.getName())) {
515 if (!nextTag.isNo()) {
516 final Element child = tagReader.readElement(nextTag);
517 final String type = currentTag.getAttribute("type");
518 if (packetType == PACKET_IQ
519 && "jingle".equals(child.getName())
520 && ("set".equalsIgnoreCase(type) || "get"
521 .equalsIgnoreCase(type))) {
522 element = new JinglePacket();
523 element.setAttributes(currentTag.getAttributes());
524 }
525 element.addChild(child);
526 }
527 nextTag = tagReader.readTag();
528 if (nextTag == null) {
529 throw new IOException("interrupted mid tag");
530 }
531 }
532 if (stanzasReceived == Integer.MAX_VALUE) {
533 resetStreamId();
534 throw new IOException("time to restart the session. cant handle >2 billion pcks");
535 }
536 ++stanzasReceived;
537 lastPacketReceived = SystemClock.elapsedRealtime();
538 return element;
539 }
540
541 private void processIq(final Tag currentTag) throws XmlPullParserException, IOException {
542 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
543
544 if (packet.getId() == null) {
545 return; // an iq packet without id is definitely invalid
546 }
547
548 if (packet instanceof JinglePacket) {
549 if (this.jingleListener != null) {
550 this.jingleListener.onJinglePacketReceived(account,(JinglePacket) packet);
551 }
552 } else {
553 OnIqPacketReceived callback = null;
554 synchronized (this.packetCallbacks) {
555 if (packetCallbacks.containsKey(packet.getId())) {
556 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
557 // Packets to the server should have responses from the server
558 if (packetCallbackDuple.first.toServer(account)) {
559 if (packet.fromServer(account) || account.getJid().getDomainpart().equals("chat.facebook.com")) {
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 } else {
566 if (packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
567 callback = packetCallbackDuple.second;
568 packetCallbacks.remove(packet.getId());
569 } else {
570 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
571 }
572 }
573 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
574 callback = this.unregisteredIqListener;
575 }
576 }
577 if (callback != null) {
578 callback.onIqPacketReceived(account,packet);
579 }
580 }
581 }
582
583 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
584 final MessagePacket packet = (MessagePacket) processPacket(currentTag,PACKET_MESSAGE);
585 this.messageListener.onMessagePacketReceived(account, packet);
586 }
587
588 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
589 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
590 this.presenceListener.onPresencePacketReceived(account, packet);
591 }
592
593 private void sendStartTLS() throws IOException {
594 final Tag startTLS = Tag.empty("starttls");
595 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
596 tagWriter.writeTag(startTLS);
597 }
598
599 private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
600 tagReader.readTag();
601 try {
602 final SSLContext sc = SSLContext.getInstance("TLS");
603 MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
604 KeyManager[] keyManager;
605 if (account.getPrivateKeyAlias() != null && account.getPassword().isEmpty()) {
606 keyManager = new KeyManager[]{ mKeyManager };
607 } else {
608 keyManager = null;
609 }
610 sc.init(keyManager,new X509TrustManager[]{mInteractive ? trustManager : trustManager.getNonInteractive()},mXmppConnectionService.getRNG());
611 final SSLSocketFactory factory = sc.getSocketFactory();
612 final HostnameVerifier verifier;
613 if (mInteractive) {
614 verifier = trustManager.wrapHostnameVerifier(new StrictHostnameVerifier());
615 } else {
616 verifier = trustManager.wrapHostnameVerifierNonInteractive(new StrictHostnameVerifier());
617 }
618 final InetAddress address = socket == null ? null : socket.getInetAddress();
619
620 if (factory == null || address == null || verifier == null) {
621 throw new IOException("could not setup ssl");
622 }
623
624 final SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,address.getHostAddress(), socket.getPort(),true);
625
626 if (sslSocket == null) {
627 throw new IOException("could not initialize ssl socket");
628 }
629
630 final String[] supportProtocols;
631 final Collection<String> supportedProtocols = new LinkedList<>(
632 Arrays.asList(sslSocket.getSupportedProtocols()));
633 supportedProtocols.remove("SSLv3");
634 supportProtocols = supportedProtocols.toArray(new String[supportedProtocols.size()]);
635
636 sslSocket.setEnabledProtocols(supportProtocols);
637
638 final String[] cipherSuites = CryptoHelper.getOrderedCipherSuites(
639 sslSocket.getSupportedCipherSuites());
640 //Log.d(Config.LOGTAG, "Using ciphers: " + Arrays.toString(cipherSuites));
641 if (cipherSuites.length > 0) {
642 sslSocket.setEnabledCipherSuites(cipherSuites);
643 }
644
645 if (!verifier.verify(account.getServer().getDomainpart(),sslSocket.getSession())) {
646 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": TLS certificate verification failed");
647 throw new SecurityException();
648 }
649 tagReader.setInputStream(sslSocket.getInputStream());
650 tagWriter.setOutputStream(sslSocket.getOutputStream());
651 sendStartStream();
652 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": TLS connection established");
653 features.encryptionEnabled = true;
654 processStream(tagReader.readTag());
655 sslSocket.close();
656 } catch (final NoSuchAlgorithmException | KeyManagementException e1) {
657 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": TLS certificate verification failed");
658 throw new SecurityException();
659 }
660 }
661
662 private void processStreamFeatures(final Tag currentTag)
663 throws XmlPullParserException, IOException {
664 this.streamFeatures = tagReader.readElement(currentTag);
665 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
666 sendStartTLS();
667 } else if (this.streamFeatures.hasChild("register")
668 && account.isOptionSet(Account.OPTION_REGISTER)
669 && features.encryptionEnabled) {
670 sendRegistryRequest();
671 } else if (!this.streamFeatures.hasChild("register")
672 && account.isOptionSet(Account.OPTION_REGISTER)) {
673 changeStatus(Account.State.REGISTRATION_NOT_SUPPORTED);
674 disconnect(true);
675 } else if (this.streamFeatures.hasChild("mechanisms")
676 && shouldAuthenticate && features.encryptionEnabled) {
677 final List<String> mechanisms = extractMechanisms(streamFeatures
678 .findChild("mechanisms"));
679 final Element auth = new Element("auth");
680 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
681 if (mechanisms.contains("EXTERNAL")) {
682 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
683 } else if (mechanisms.contains("SCRAM-SHA-1")) {
684 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
685 } else if (mechanisms.contains("PLAIN")) {
686 saslMechanism = new Plain(tagWriter, account);
687 } else if (mechanisms.contains("DIGEST-MD5")) {
688 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
689 }
690 if (saslMechanism != null) {
691 final JSONObject keys = account.getKeys();
692 try {
693 if (keys.has(Account.PINNED_MECHANISM_KEY) &&
694 keys.getInt(Account.PINNED_MECHANISM_KEY) > saslMechanism.getPriority()) {
695 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
696 " has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
697 ") than pinned priority (" + keys.getInt(Account.PINNED_MECHANISM_KEY) +
698 "). Possible downgrade attack?");
699 throw new SecurityException();
700 }
701 } catch (final JSONException e) {
702 Log.d(Config.LOGTAG, "Parse error while checking pinned auth mechanism");
703 }
704 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
705 auth.setAttribute("mechanism", saslMechanism.getMechanism());
706 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
707 auth.setContent(saslMechanism.getClientFirstMessage());
708 }
709 tagWriter.writeElement(auth);
710 } else {
711 throw new IncompatibleServerException();
712 }
713 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
714 if (Config.EXTENDED_SM_LOGGING) {
715 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": resuming after stanza #"+stanzasReceived);
716 }
717 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
718 this.tagWriter.writeStanzaAsync(resume);
719 } else if (needsBinding) {
720 if (this.streamFeatures.hasChild("bind")) {
721 sendBindRequest();
722 } else {
723 throw new IncompatibleServerException();
724 }
725 }
726 }
727
728 private List<String> extractMechanisms(final Element stream) {
729 final ArrayList<String> mechanisms = new ArrayList<>(stream
730 .getChildren().size());
731 for (final Element child : stream.getChildren()) {
732 mechanisms.add(child.getContent());
733 }
734 return mechanisms;
735 }
736
737 public void sendCaptchaRegistryRequest(String id, Data data) {
738 if (data == null) {
739 setAccountCreationFailed("");
740 } else {
741 IqPacket request = getIqGenerator().generateCreateAccountWithCaptcha(account, id, data);
742 sendIqPacket(request, createPacketReceiveHandler());
743 }
744 }
745
746 private void sendRegistryRequest() {
747 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
748 register.query("jabber:iq:register");
749 register.setTo(account.getServer());
750 sendIqPacket(register, new OnIqPacketReceived() {
751
752 @Override
753 public void onIqPacketReceived(final Account account, final IqPacket packet) {
754 boolean failed = false;
755 if (packet.getType() == IqPacket.TYPE.RESULT
756 && packet.query().hasChild("username")
757 && (packet.query().hasChild("password"))) {
758 final IqPacket register = new IqPacket(IqPacket.TYPE.SET);
759 final Element username = new Element("username").setContent(account.getUsername());
760 final Element password = new Element("password").setContent(account.getPassword());
761 register.query("jabber:iq:register").addChild(username);
762 register.query().addChild(password);
763 sendIqPacket(register, createPacketReceiveHandler());
764 } else if (packet.getType() == IqPacket.TYPE.RESULT
765 && (packet.query().hasChild("x", "jabber:x:data"))) {
766 final Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
767 final Element blob = packet.query().findChild("data", "urn:xmpp:bob");
768 final String id = packet.getId();
769
770 Bitmap captcha = null;
771 if (blob != null) {
772 try {
773 final String base64Blob = blob.getContent();
774 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
775 InputStream stream = new ByteArrayInputStream(strBlob);
776 captcha = BitmapFactory.decodeStream(stream);
777 } catch (Exception e) {
778
779 }
780 } else {
781 try {
782 Field url = data.getFieldByName("url");
783 String urlString = url.findChildContent("value");
784
785 URL uri = new URL(urlString);
786 captcha = BitmapFactory.decodeStream(uri.openConnection().getInputStream());
787 } catch(MalformedURLException e) {
788 Log.e(Config.LOGTAG, e.toString());
789 } catch(IOException e) {
790 Log.e(Config.LOGTAG, e.toString());
791 }
792 }
793
794 if (captcha != null) {
795 failed = !mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha);
796 }
797 } else {
798 failed = true;
799 }
800
801 if (failed) {
802 final Element instructions = packet.query().findChild("instructions");
803 setAccountCreationFailed((instructions != null) ? instructions.getContent() : "");
804 }
805 }
806 });
807 }
808
809 private void setAccountCreationFailed(String instructions) {
810 changeStatus(Account.State.REGISTRATION_FAILED);
811 disconnect(true);
812 Log.d(Config.LOGTAG, account.getJid().toBareJid()
813 + ": could not register. instructions are"
814 + instructions);
815 }
816
817 private void sendBindRequest() {
818 while(!mXmppConnectionService.areMessagesInitialized()) {
819 try {
820 Thread.sleep(500);
821 } catch (final InterruptedException ignored) {
822 }
823 }
824 needsBinding = false;
825 clearIqCallbacks();
826 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
827 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
828 .addChild("resource").setContent(account.getResource());
829 this.sendUnmodifiedIqPacket(iq, new OnIqPacketReceived() {
830 @Override
831 public void onIqPacketReceived(final Account account, final IqPacket packet) {
832 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
833 return;
834 }
835 final Element bind = packet.findChild("bind");
836 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
837 final Element jid = bind.findChild("jid");
838 if (jid != null && jid.getContent() != null) {
839 try {
840 account.setResource(Jid.fromString(jid.getContent()).getResourcepart());
841 } catch (final InvalidJidException e) {
842 // TODO: Handle the case where an external JID is technically invalid?
843 }
844 if (streamFeatures.hasChild("session")) {
845 sendStartSession();
846 } else {
847 sendPostBindInitialization();
848 }
849 } else {
850 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure");
851 disconnect(true);
852 }
853 } else {
854 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure");
855 disconnect(true);
856 }
857 }
858 });
859 }
860
861 private void clearIqCallbacks() {
862 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
863 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
864 synchronized (this.packetCallbacks) {
865 if (this.packetCallbacks.size() == 0) {
866 return;
867 }
868 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": clearing "+this.packetCallbacks.size()+" iq callbacks");
869 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
870 while (iterator.hasNext()) {
871 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
872 callbacks.add(entry.second);
873 iterator.remove();
874 }
875 }
876 for(OnIqPacketReceived callback : callbacks) {
877 callback.onIqPacketReceived(account,failurePacket);
878 }
879 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
880 }
881
882 private void sendStartSession() {
883 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
884 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
885 this.sendUnmodifiedIqPacket(startSession, new OnIqPacketReceived() {
886 @Override
887 public void onIqPacketReceived(Account account, IqPacket packet) {
888 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
889 return;
890 } else if (packet.getType() == IqPacket.TYPE.RESULT) {
891 sendPostBindInitialization();
892 } else {
893 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not init sessions");
894 disconnect(true);
895 }
896 }
897 });
898 }
899
900 private void sendPostBindInitialization() {
901 smVersion = 0;
902 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
903 smVersion = 3;
904 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
905 smVersion = 2;
906 }
907 if (smVersion != 0) {
908 final EnablePacket enable = new EnablePacket(smVersion);
909 tagWriter.writeStanzaAsync(enable);
910 stanzasSent = 0;
911 mStanzaQueue.clear();
912 }
913 features.carbonsEnabled = false;
914 features.blockListRequested = false;
915 disco.clear();
916 sendServiceDiscoveryInfo(account.getServer());
917 sendServiceDiscoveryInfo(account.getJid().toBareJid());
918 sendServiceDiscoveryItems(account.getServer());
919 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": online with resource " + account.getResource());
920 this.lastSessionStarted = SystemClock.elapsedRealtime();
921 changeStatus(Account.State.ONLINE);
922 if (bindListener != null) {
923 bindListener.onBind(account);
924 }
925 }
926
927 private void sendServiceDiscoveryInfo(final Jid jid) {
928 if (disco.containsKey(jid)) {
929 if (account.getServer().equals(jid)) {
930 enableAdvancedStreamFeatures();
931 }
932 } else {
933 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
934 iq.setTo(jid);
935 iq.query("http://jabber.org/protocol/disco#info");
936 this.sendIqPacket(iq, new OnIqPacketReceived() {
937
938 @Override
939 public void onIqPacketReceived(final Account account, final IqPacket packet) {
940 if (packet.getType() == IqPacket.TYPE.RESULT) {
941 final List<Element> elements = packet.query().getChildren();
942 final Info info = new Info();
943 for (final Element element : elements) {
944 if (element.getName().equals("identity")) {
945 String type = element.getAttribute("type");
946 String category = element.getAttribute("category");
947 if (type != null && category != null) {
948 info.identities.add(new Pair<>(category, type));
949 }
950 } else if (element.getName().equals("feature")) {
951 info.features.add(element.getAttribute("var"));
952 }
953 }
954 disco.put(jid, info);
955 if (account.getServer().equals(jid)) {
956 enableAdvancedStreamFeatures();
957 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
958 listener.onAdvancedStreamFeaturesAvailable(account);
959 }
960 }
961 } else {
962 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": could not query disco info for "+jid.toString());
963 }
964 }
965 });
966 }
967 }
968
969 private void enableAdvancedStreamFeatures() {
970 if (getFeatures().carbons() && !features.carbonsEnabled) {
971 sendEnableCarbons();
972 }
973 if (getFeatures().blocking() && !features.blockListRequested) {
974 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": Requesting block list");
975 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
976 }
977 }
978
979 private void sendServiceDiscoveryItems(final Jid server) {
980 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
981 iq.setTo(server.toDomainJid());
982 iq.query("http://jabber.org/protocol/disco#items");
983 this.sendIqPacket(iq, new OnIqPacketReceived() {
984
985 @Override
986 public void onIqPacketReceived(final Account account, final IqPacket packet) {
987 if (packet.getType() == IqPacket.TYPE.RESULT) {
988 final List<Element> elements = packet.query().getChildren();
989 for (final Element element : elements) {
990 if (element.getName().equals("item")) {
991 final Jid jid = element.getAttributeAsJid("jid");
992 if (jid != null && !jid.equals(account.getServer())) {
993 sendServiceDiscoveryInfo(jid);
994 }
995 }
996 }
997 } else {
998 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": could not query disco items of "+server);
999 }
1000 }
1001 });
1002 }
1003
1004 private void sendEnableCarbons() {
1005 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1006 iq.addChild("enable", "urn:xmpp:carbons:2");
1007 this.sendIqPacket(iq, new OnIqPacketReceived() {
1008
1009 @Override
1010 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1011 if (!packet.hasChild("error")) {
1012 Log.d(Config.LOGTAG, account.getJid().toBareJid()
1013 + ": successfully enabled carbons");
1014 features.carbonsEnabled = true;
1015 } else {
1016 Log.d(Config.LOGTAG, account.getJid().toBareJid()
1017 + ": error enableing carbons " + packet.toString());
1018 }
1019 }
1020 });
1021 }
1022
1023 private void processStreamError(final Tag currentTag)
1024 throws XmlPullParserException, IOException {
1025 final Element streamError = tagReader.readElement(currentTag);
1026 if (streamError != null && streamError.hasChild("conflict")) {
1027 final String resource = account.getResource().split("\\.")[0];
1028 account.setResource(resource + "." + nextRandomId());
1029 Log.d(Config.LOGTAG,
1030 account.getJid().toBareJid() + ": switching resource due to conflict ("
1031 + account.getResource() + ")");
1032 } else if (streamError != null) {
1033 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": stream error "+streamError.toString());
1034 }
1035 }
1036
1037 private void sendStartStream() throws IOException {
1038 final Tag stream = Tag.start("stream:stream");
1039 stream.setAttribute("to", account.getServer().toString());
1040 stream.setAttribute("version", "1.0");
1041 stream.setAttribute("xml:lang", "en");
1042 stream.setAttribute("xmlns", "jabber:client");
1043 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1044 tagWriter.writeTag(stream);
1045 }
1046
1047 private String nextRandomId() {
1048 return new BigInteger(50, mXmppConnectionService.getRNG()).toString(32);
1049 }
1050
1051 public void sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1052 packet.setFrom(account.getJid());
1053 this.sendUnmodifiedIqPacket(packet, callback);
1054
1055 }
1056
1057 private synchronized void sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1058 if (packet.getId() == null) {
1059 final String id = nextRandomId();
1060 packet.setAttribute("id", id);
1061 }
1062 if (callback != null) {
1063 synchronized (this.packetCallbacks) {
1064 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1065 }
1066 }
1067 this.sendPacket(packet);
1068 }
1069
1070 public void sendMessagePacket(final MessagePacket packet) {
1071 this.sendPacket(packet);
1072 }
1073
1074 public void sendPresencePacket(final PresencePacket packet) {
1075 this.sendPacket(packet);
1076 }
1077
1078 private synchronized void sendPacket(final AbstractStanza packet) {
1079 if (stanzasSent == Integer.MAX_VALUE) {
1080 resetStreamId();
1081 disconnect(true);
1082 return;
1083 }
1084 tagWriter.writeStanzaAsync(packet);
1085 if (packet instanceof AbstractAcknowledgeableStanza) {
1086 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1087 ++stanzasSent;
1088 this.mStanzaQueue.put(stanzasSent, stanza);
1089 if (stanza instanceof MessagePacket && stanza.getId() != null && getFeatures().sm()) {
1090 if (Config.EXTENDED_SM_LOGGING) {
1091 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1092 }
1093 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1094 }
1095 }
1096 }
1097
1098 public void sendPing() {
1099 if (!r()) {
1100 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1101 iq.setFrom(account.getJid());
1102 iq.addChild("ping", "urn:xmpp:ping");
1103 this.sendIqPacket(iq, null);
1104 }
1105 this.lastPingSent = SystemClock.elapsedRealtime();
1106 }
1107
1108 public void setOnMessagePacketReceivedListener(
1109 final OnMessagePacketReceived listener) {
1110 this.messageListener = listener;
1111 }
1112
1113 public void setOnUnregisteredIqPacketReceivedListener(
1114 final OnIqPacketReceived listener) {
1115 this.unregisteredIqListener = listener;
1116 }
1117
1118 public void setOnPresencePacketReceivedListener(
1119 final OnPresencePacketReceived listener) {
1120 this.presenceListener = listener;
1121 }
1122
1123 public void setOnJinglePacketReceivedListener(
1124 final OnJinglePacketReceived listener) {
1125 this.jingleListener = listener;
1126 }
1127
1128 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1129 this.statusListener = listener;
1130 }
1131
1132 public void setOnBindListener(final OnBindListener listener) {
1133 this.bindListener = listener;
1134 }
1135
1136 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1137 this.acknowledgedListener = listener;
1138 }
1139
1140 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1141 if (!this.advancedStreamFeaturesLoadedListeners.contains(listener)) {
1142 this.advancedStreamFeaturesLoadedListeners.add(listener);
1143 }
1144 }
1145
1146 public void disconnect(final boolean force) {
1147 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": disconnecting");
1148 try {
1149 if (force) {
1150 socket.close();
1151 return;
1152 }
1153 new Thread(new Runnable() {
1154
1155 @Override
1156 public void run() {
1157 if (tagWriter.isActive()) {
1158 tagWriter.finish();
1159 try {
1160 int i = 0;
1161 boolean warned = false;
1162 while (!tagWriter.finished() && socket.isConnected() && i <= 10) {
1163 if (!warned) {
1164 Log.d(Config.LOGTAG, account.getJid().toBareJid()+": waiting for tag writer to finish");
1165 warned = true;
1166 }
1167 Thread.sleep(200);
1168 i++;
1169 }
1170 if (warned) {
1171 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": tag writer has finished");
1172 }
1173 tagWriter.writeTag(Tag.end("stream:stream"));
1174 socket.close();
1175 } catch (final IOException e) {
1176 Log.d(Config.LOGTAG,"io exception during disconnect");
1177 } catch (final InterruptedException e) {
1178 Log.d(Config.LOGTAG, "interrupted");
1179 }
1180 }
1181 }
1182 }).start();
1183 } catch (final IOException e) {
1184 Log.d(Config.LOGTAG, "io exception during disconnect");
1185 }
1186 }
1187
1188 public void resetStreamId() {
1189 this.streamId = null;
1190 }
1191
1192 public List<Jid> findDiscoItemsByFeature(final String feature) {
1193 final List<Jid> items = new ArrayList<>();
1194 for (final Entry<Jid, Info> cursor : disco.entrySet()) {
1195 if (cursor.getValue().features.contains(feature)) {
1196 items.add(cursor.getKey());
1197 }
1198 }
1199 return items;
1200 }
1201
1202 public Jid findDiscoItemByFeature(final String feature) {
1203 final List<Jid> items = findDiscoItemsByFeature(feature);
1204 if (items.size() >= 1) {
1205 return items.get(0);
1206 }
1207 return null;
1208 }
1209
1210 public boolean r() {
1211 if (getFeatures().sm()) {
1212 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1213 return true;
1214 } else {
1215 return false;
1216 }
1217 }
1218
1219 public String getMucServer() {
1220 for (final Entry<Jid, Info> cursor : disco.entrySet()) {
1221 final Info value = cursor.getValue();
1222 if (value.features.contains("http://jabber.org/protocol/muc")
1223 && !value.features.contains("jabber:iq:gateway")
1224 && !value.identities.contains(new Pair<>("conference","irc"))) {
1225 return cursor.getKey().toString();
1226 }
1227 }
1228 return null;
1229 }
1230
1231 public int getTimeToNextAttempt() {
1232 final int interval = (int) (25 * Math.pow(1.5, attempt));
1233 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1234 return interval - secondsSinceLast;
1235 }
1236
1237 public int getAttempt() {
1238 return this.attempt;
1239 }
1240
1241 public Features getFeatures() {
1242 return this.features;
1243 }
1244
1245 public long getLastSessionEstablished() {
1246 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1247 return System.currentTimeMillis() - diff;
1248 }
1249
1250 public long getLastConnect() {
1251 return this.lastConnect;
1252 }
1253
1254 public long getLastPingSent() {
1255 return this.lastPingSent;
1256 }
1257
1258 public long getLastPacketReceived() {
1259 return this.lastPacketReceived;
1260 }
1261
1262 public void sendActive() {
1263 this.sendPacket(new ActivePacket());
1264 }
1265
1266 public void sendInactive() {
1267 this.sendPacket(new InactivePacket());
1268 }
1269
1270 public void resetAttemptCount() {
1271 this.attempt = 0;
1272 this.lastConnect = 0;
1273 }
1274
1275 public void setInteractive(boolean interactive) {
1276 this.mInteractive = interactive;
1277 }
1278
1279 private class Info {
1280 public final ArrayList<String> features = new ArrayList<>();
1281 public final ArrayList<Pair<String,String>> identities = new ArrayList<>();
1282 }
1283
1284 private class UnauthorizedException extends IOException {
1285
1286 }
1287
1288 private class SecurityException extends IOException {
1289
1290 }
1291
1292 private class IncompatibleServerException extends IOException {
1293
1294 }
1295
1296 private class DnsTimeoutException extends IOException {
1297
1298 }
1299
1300 public class Features {
1301 XmppConnection connection;
1302 private boolean carbonsEnabled = false;
1303 private boolean encryptionEnabled = false;
1304 private boolean blockListRequested = false;
1305
1306 public Features(final XmppConnection connection) {
1307 this.connection = connection;
1308 }
1309
1310 private boolean hasDiscoFeature(final Jid server, final String feature) {
1311 return connection.disco.containsKey(server) &&
1312 connection.disco.get(server).features.contains(feature);
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 final Pair<String,String> needle = new Pair<>("pubsub","pep");
1338 Info info = disco.get(account.getServer());
1339 if (info != null && info.identities.contains(needle)) {
1340 return true;
1341 } else {
1342 info = disco.get(account.getJid().toBareJid());
1343 return info != null && info.identities.contains(needle);
1344 }
1345 }
1346
1347 public boolean mam() {
1348 if (hasDiscoFeature(account.getJid().toBareJid(), "urn:xmpp:mam:0")) {
1349 return true;
1350 } else {
1351 return hasDiscoFeature(account.getServer(), "urn:xmpp:mam:0");
1352 }
1353 }
1354
1355 public boolean advancedStreamFeaturesLoaded() {
1356 return disco.containsKey(account.getServer());
1357 }
1358
1359 public boolean rosterVersioning() {
1360 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1361 }
1362
1363 public void setBlockListRequested(boolean value) {
1364 this.blockListRequested = value;
1365 }
1366
1367 public boolean httpUpload() {
1368 return findDiscoItemsByFeature(Xmlns.HTTP_UPLOAD).size() > 0;
1369 }
1370 }
1371
1372 private IqGenerator getIqGenerator() {
1373 return mXmppConnectionService.getIqGenerator();
1374 }
1375}