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.json.JSONException;
17import org.json.JSONObject;
18import org.xmlpull.v1.XmlPullParserException;
19
20import java.io.ByteArrayInputStream;
21import java.io.IOException;
22import java.io.InputStream;
23import java.io.OutputStream;
24import java.math.BigInteger;
25import java.net.ConnectException;
26import java.net.IDN;
27import java.net.InetAddress;
28import java.net.InetSocketAddress;
29import java.net.Socket;
30import java.net.UnknownHostException;
31import java.net.URL;
32import java.security.KeyManagementException;
33import java.security.NoSuchAlgorithmException;
34import java.security.Principal;
35import java.security.PrivateKey;
36import java.security.cert.X509Certificate;
37import java.util.ArrayList;
38import java.util.Arrays;
39import java.util.Collection;
40import java.util.HashMap;
41import java.util.Hashtable;
42import java.util.Iterator;
43import java.util.LinkedList;
44import java.util.List;
45import java.util.Map.Entry;
46
47import javax.net.ssl.HostnameVerifier;
48import javax.net.ssl.KeyManager;
49import javax.net.ssl.SSLContext;
50import javax.net.ssl.SSLSocket;
51import javax.net.ssl.SSLSocketFactory;
52import javax.net.ssl.X509KeyManager;
53import javax.net.ssl.X509TrustManager;
54
55import de.duenndns.ssl.MemorizingTrustManager;
56import eu.siacs.conversations.Config;
57import eu.siacs.conversations.crypto.XmppDomainVerifier;
58import eu.siacs.conversations.crypto.sasl.DigestMd5;
59import eu.siacs.conversations.crypto.sasl.External;
60import eu.siacs.conversations.crypto.sasl.Plain;
61import eu.siacs.conversations.crypto.sasl.SaslMechanism;
62import eu.siacs.conversations.crypto.sasl.ScramSha1;
63import eu.siacs.conversations.entities.Account;
64import eu.siacs.conversations.entities.Message;
65import eu.siacs.conversations.generator.IqGenerator;
66import eu.siacs.conversations.services.XmppConnectionService;
67import eu.siacs.conversations.utils.CryptoHelper;
68import eu.siacs.conversations.utils.DNSHelper;
69import eu.siacs.conversations.utils.SocksSocketFactory;
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 long lastDiscoStarted = 0;
120 private int mPendingServiceDiscoveries = 0;
121 private final ArrayList<String> mPendingServiceDiscoveriesIds = new ArrayList<>();
122 private boolean mInteractive = false;
123 private int attempt = 0;
124 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
125 private OnPresencePacketReceived presenceListener = null;
126 private OnJinglePacketReceived jingleListener = null;
127 private OnIqPacketReceived unregisteredIqListener = null;
128 private OnMessagePacketReceived messageListener = null;
129 private OnStatusChanged statusListener = null;
130 private OnBindListener bindListener = null;
131 private final ArrayList<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new ArrayList<>();
132 private OnMessageAcknowledged acknowledgedListener = null;
133 private XmppConnectionService mXmppConnectionService = null;
134
135 private SaslMechanism saslMechanism;
136
137 private X509KeyManager mKeyManager = new X509KeyManager() {
138 @Override
139 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
140 return account.getPrivateKeyAlias();
141 }
142
143 @Override
144 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
145 return null;
146 }
147
148 @Override
149 public X509Certificate[] getCertificateChain(String alias) {
150 try {
151 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
152 } catch (Exception e) {
153 return new X509Certificate[0];
154 }
155 }
156
157 @Override
158 public String[] getClientAliases(String s, Principal[] principals) {
159 return new String[0];
160 }
161
162 @Override
163 public String[] getServerAliases(String s, Principal[] principals) {
164 return new String[0];
165 }
166
167 @Override
168 public PrivateKey getPrivateKey(String alias) {
169 try {
170 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
171 } catch (Exception e) {
172 return null;
173 }
174 }
175 };
176 private Identity mServerIdentity = Identity.UNKNOWN;
177
178 private OnIqPacketReceived createPacketReceiveHandler() {
179 return new OnIqPacketReceived() {
180 @Override
181 public void onIqPacketReceived(Account account, IqPacket packet) {
182 if (packet.getType() == IqPacket.TYPE.RESULT) {
183 account.setOption(Account.OPTION_REGISTER,
184 false);
185 changeStatus(Account.State.REGISTRATION_SUCCESSFUL);
186 } else if (packet.hasChild("error")
187 && (packet.findChild("error")
188 .hasChild("conflict"))) {
189 changeStatus(Account.State.REGISTRATION_CONFLICT);
190 } else {
191 changeStatus(Account.State.REGISTRATION_FAILED);
192 Log.d(Config.LOGTAG, packet.toString());
193 }
194 disconnect(true);
195 }
196 };
197 }
198
199 public XmppConnection(final Account account, final XmppConnectionService service) {
200 this.account = account;
201 this.wakeLock = service.getPowerManager().newWakeLock(
202 PowerManager.PARTIAL_WAKE_LOCK, account.getJid().toBareJid().toString());
203 tagWriter = new TagWriter();
204 mXmppConnectionService = service;
205 }
206
207 protected void changeStatus(final Account.State nextStatus) {
208 if (account.getStatus() != nextStatus) {
209 if ((nextStatus == Account.State.OFFLINE)
210 && (account.getStatus() != Account.State.CONNECTING)
211 && (account.getStatus() != Account.State.ONLINE)
212 && (account.getStatus() != Account.State.DISABLED)) {
213 return;
214 }
215 if (nextStatus == Account.State.ONLINE) {
216 this.attempt = 0;
217 }
218 account.setStatus(nextStatus);
219 if (statusListener != null) {
220 statusListener.onStatusChanged(account);
221 }
222 }
223 }
224
225 protected void connect() {
226 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": connecting");
227 features.encryptionEnabled = false;
228 lastConnect = SystemClock.elapsedRealtime();
229 lastPingSent = SystemClock.elapsedRealtime();
230 lastDiscoStarted = Long.MAX_VALUE;
231 this.attempt++;
232 if (account.getJid().getDomainpart().equals("chat.facebook.com")) {
233 mServerIdentity = Identity.FACEBOOK;
234 }
235 try {
236 shouldAuthenticate = needsBinding = !account.isOptionSet(Account.OPTION_REGISTER);
237 tagReader = new XmlReader(wakeLock);
238 tagWriter = new TagWriter();
239 this.changeStatus(Account.State.CONNECTING);
240 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
241 if (useTor) {
242 String destination;
243 if (account.getHostname() == null || account.getHostname().isEmpty()) {
244 destination = account.getServer().toString();
245 } else {
246 destination = account.getHostname();
247 }
248 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": connect to "+destination+" via TOR");
249 socket = SocksSocketFactory.createSocketOverTor(destination,account.getPort());
250 } else if (DNSHelper.isIp(account.getServer().toString())) {
251 socket = new Socket();
252 try {
253 socket.connect(new InetSocketAddress(account.getServer().toString(), 5222), Config.SOCKET_TIMEOUT * 1000);
254 } catch (IOException e) {
255 throw new UnknownHostException();
256 }
257 } else {
258 final Bundle result = DNSHelper.getSRVRecord(account.getServer(),mXmppConnectionService);
259 final ArrayList<Parcelable>values = result.getParcelableArrayList("values");
260 int i = 0;
261 boolean socketError = true;
262 while (socketError && values.size() > i) {
263 final Bundle namePort = (Bundle) values.get(i);
264 try {
265 String srvRecordServer;
266 try {
267 srvRecordServer = IDN.toASCII(namePort.getString("name"));
268 } catch (final IllegalArgumentException e) {
269 // TODO: Handle me?`
270 srvRecordServer = "";
271 }
272 final int srvRecordPort = namePort.getInt("port");
273 final String srvIpServer = namePort.getString("ip");
274 final InetSocketAddress addr;
275 if (srvIpServer != null) {
276 addr = new InetSocketAddress(srvIpServer, srvRecordPort);
277 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
278 + ": using values from dns " + srvRecordServer
279 + "[" + srvIpServer + "]:" + srvRecordPort);
280 } else {
281 addr = new InetSocketAddress(srvRecordServer, srvRecordPort);
282 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
283 + ": using values from dns "
284 + srvRecordServer + ":" + srvRecordPort);
285 }
286 socket = new Socket();
287 socket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
288 socketError = false;
289 } catch (final Throwable e) {
290 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage() +"("+e.getClass().getName()+")");
291 i++;
292 }
293 }
294 if (socketError) {
295 throw new UnknownHostException();
296 }
297 }
298 final OutputStream out = socket.getOutputStream();
299 tagWriter.setOutputStream(out);
300 final InputStream in = socket.getInputStream();
301 tagReader.setInputStream(in);
302 tagWriter.beginDocument();
303 sendStartStream();
304 Tag nextTag;
305 while ((nextTag = tagReader.readTag()) != null) {
306 if (nextTag.isStart("stream")) {
307 processStream();
308 break;
309 } else {
310 throw new IOException("unknown tag on connect");
311 }
312 }
313 if (socket.isConnected()) {
314 socket.close();
315 }
316 } catch (final IncompatibleServerException e) {
317 this.changeStatus(Account.State.INCOMPATIBLE_SERVER);
318 } catch (final SecurityException e) {
319 this.changeStatus(Account.State.SECURITY_ERROR);
320 } catch (final UnauthorizedException e) {
321 this.changeStatus(Account.State.UNAUTHORIZED);
322 } catch (final UnknownHostException | ConnectException e) {
323 this.changeStatus(Account.State.SERVER_NOT_FOUND);
324 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
325 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
326 } catch (final IOException | XmlPullParserException | NoSuchAlgorithmException e) {
327 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
328 this.changeStatus(Account.State.OFFLINE);
329 this.attempt--; //don't count attempt when reconnecting instantly anyway
330 } finally {
331 if (socket != null) {
332 try {
333 socket.close();
334 } catch (IOException e) {
335
336 }
337 }
338 if (wakeLock.isHeld()) {
339 try {
340 wakeLock.release();
341 } catch (final RuntimeException ignored) {
342 }
343 }
344 }
345 }
346
347 @Override
348 public void run() {
349 try {
350 if (socket != null) {
351 socket.close();
352 }
353 } catch (final IOException ignored) {
354
355 }
356 connect();
357 }
358
359 private void processStream() throws XmlPullParserException, IOException, NoSuchAlgorithmException {
360 Tag nextTag = tagReader.readTag();
361 while (nextTag != null && !nextTag.isEnd("stream")) {
362 if (nextTag.isStart("error")) {
363 processStreamError(nextTag);
364 } else if (nextTag.isStart("features")) {
365 processStreamFeatures(nextTag);
366 } else if (nextTag.isStart("proceed")) {
367 switchOverToTls(nextTag);
368 } else if (nextTag.isStart("success")) {
369 final String challenge = tagReader.readElement(nextTag).getContent();
370 try {
371 saslMechanism.getResponse(challenge);
372 } catch (final SaslMechanism.AuthenticationException e) {
373 disconnect(true);
374 Log.e(Config.LOGTAG, String.valueOf(e));
375 }
376 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": logged in");
377 account.setKey(Account.PINNED_MECHANISM_KEY,
378 String.valueOf(saslMechanism.getPriority()));
379 tagReader.reset();
380 sendStartStream();
381 final Tag tag = tagReader.readTag();
382 if (tag != null && tag.isStart("stream")) {
383 processStream();
384 } else {
385 throw new IOException("server didn't restart stream after successful auth");
386 }
387 break;
388 } else if (nextTag.isStart("failure")) {
389 throw new UnauthorizedException();
390 } else if (nextTag.isStart("challenge")) {
391 final String challenge = tagReader.readElement(nextTag).getContent();
392 final Element response = new Element("response");
393 response.setAttribute("xmlns",
394 "urn:ietf:params:xml:ns:xmpp-sasl");
395 try {
396 response.setContent(saslMechanism.getResponse(challenge));
397 } catch (final SaslMechanism.AuthenticationException e) {
398 // TODO: Send auth abort tag.
399 Log.e(Config.LOGTAG, e.toString());
400 }
401 tagWriter.writeElement(response);
402 } else if (nextTag.isStart("enabled")) {
403 final Element enabled = tagReader.readElement(nextTag);
404 if ("true".equals(enabled.getAttribute("resume"))) {
405 this.streamId = enabled.getAttribute("id");
406 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
407 + ": stream managment(" + smVersion
408 + ") enabled (resumable)");
409 } else {
410 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
411 + ": stream management(" + smVersion + ") enabled");
412 }
413 this.stanzasReceived = 0;
414 final RequestPacket r = new RequestPacket(smVersion);
415 tagWriter.writeStanzaAsync(r);
416 } else if (nextTag.isStart("resumed")) {
417 lastPacketReceived = SystemClock.elapsedRealtime();
418 final Element resumed = tagReader.readElement(nextTag);
419 final String h = resumed.getAttribute("h");
420 try {
421 final int serverCount = Integer.parseInt(h);
422 if (serverCount != stanzasSent) {
423 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
424 + ": session resumed with lost packages");
425 stanzasSent = serverCount;
426 } else {
427 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": session resumed");
428 }
429 acknowledgeStanzaUpTo(serverCount);
430 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
431 for(int i = 0; i < this.mStanzaQueue.size(); ++i) {
432 failedStanzas.add(mStanzaQueue.valueAt(i));
433 }
434 mStanzaQueue.clear();
435 Log.d(Config.LOGTAG,"resending "+failedStanzas.size()+" stanzas");
436 for(AbstractAcknowledgeableStanza packet : failedStanzas) {
437 if (packet instanceof MessagePacket) {
438 MessagePacket message = (MessagePacket) packet;
439 mXmppConnectionService.markMessage(account,
440 message.getTo().toBareJid(),
441 message.getId(),
442 Message.STATUS_UNSEND);
443 }
444 sendPacket(packet);
445 }
446 } catch (final NumberFormatException ignored) {
447 }
448 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": online with resource " + account.getResource());
449 changeStatus(Account.State.ONLINE);
450 } else if (nextTag.isStart("r")) {
451 tagReader.readElement(nextTag);
452 if (Config.EXTENDED_SM_LOGGING) {
453 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
454 }
455 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
456 tagWriter.writeStanzaAsync(ack);
457 } else if (nextTag.isStart("a")) {
458 final Element ack = tagReader.readElement(nextTag);
459 lastPacketReceived = SystemClock.elapsedRealtime();
460 try {
461 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
462 acknowledgeStanzaUpTo(serverSequence);
463 } catch (NumberFormatException e) {
464 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": server send ack without sequence number");
465 }
466 } else if (nextTag.isStart("failed")) {
467 tagReader.readElement(nextTag);
468 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": resumption failed");
469 streamId = null;
470 if (account.getStatus() != Account.State.ONLINE) {
471 sendBindRequest();
472 }
473 } else if (nextTag.isStart("iq")) {
474 processIq(nextTag);
475 } else if (nextTag.isStart("message")) {
476 processMessage(nextTag);
477 } else if (nextTag.isStart("presence")) {
478 processPresence(nextTag);
479 }
480 nextTag = tagReader.readTag();
481 }
482 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": last tag was " + nextTag);
483 if (account.getStatus() == Account.State.ONLINE) {
484 account. setStatus(Account.State.OFFLINE);
485 if (statusListener != null) {
486 statusListener.onStatusChanged(account);
487 }
488 }
489 }
490
491 private void acknowledgeStanzaUpTo(int serverCount) {
492 for (int i = 0; i < mStanzaQueue.size(); ++i) {
493 if (serverCount >= mStanzaQueue.keyAt(i)) {
494 if (Config.EXTENDED_SM_LOGGING) {
495 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
496 }
497 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
498 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
499 MessagePacket packet = (MessagePacket) stanza;
500 acknowledgedListener.onMessageAcknowledged(account, packet.getId());
501 }
502 mStanzaQueue.removeAt(i);
503 i--;
504 }
505 }
506 }
507
508 private Element processPacket(final Tag currentTag, final int packetType)
509 throws XmlPullParserException, IOException {
510 Element element;
511 switch (packetType) {
512 case PACKET_IQ:
513 element = new IqPacket();
514 break;
515 case PACKET_MESSAGE:
516 element = new MessagePacket();
517 break;
518 case PACKET_PRESENCE:
519 element = new PresencePacket();
520 break;
521 default:
522 return null;
523 }
524 element.setAttributes(currentTag.getAttributes());
525 Tag nextTag = tagReader.readTag();
526 if (nextTag == null) {
527 throw new IOException("interrupted mid tag");
528 }
529 while (!nextTag.isEnd(element.getName())) {
530 if (!nextTag.isNo()) {
531 final Element child = tagReader.readElement(nextTag);
532 final String type = currentTag.getAttribute("type");
533 if (packetType == PACKET_IQ
534 && "jingle".equals(child.getName())
535 && ("set".equalsIgnoreCase(type) || "get"
536 .equalsIgnoreCase(type))) {
537 element = new JinglePacket();
538 element.setAttributes(currentTag.getAttributes());
539 }
540 element.addChild(child);
541 }
542 nextTag = tagReader.readTag();
543 if (nextTag == null) {
544 throw new IOException("interrupted mid tag");
545 }
546 }
547 if (stanzasReceived == Integer.MAX_VALUE) {
548 resetStreamId();
549 throw new IOException("time to restart the session. cant handle >2 billion pcks");
550 }
551 ++stanzasReceived;
552 lastPacketReceived = SystemClock.elapsedRealtime();
553 return element;
554 }
555
556 private void processIq(final Tag currentTag) throws XmlPullParserException, IOException {
557 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
558
559 if (packet.getId() == null) {
560 return; // an iq packet without id is definitely invalid
561 }
562
563 if (packet instanceof JinglePacket) {
564 if (this.jingleListener != null) {
565 this.jingleListener.onJinglePacketReceived(account,(JinglePacket) packet);
566 }
567 } else {
568 OnIqPacketReceived callback = null;
569 synchronized (this.packetCallbacks) {
570 if (packetCallbacks.containsKey(packet.getId())) {
571 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
572 // Packets to the server should have responses from the server
573 if (packetCallbackDuple.first.toServer(account)) {
574 if (packet.fromServer(account) || mServerIdentity == Identity.FACEBOOK) {
575 callback = packetCallbackDuple.second;
576 packetCallbacks.remove(packet.getId());
577 } else {
578 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
579 }
580 } else {
581 if (packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
582 callback = packetCallbackDuple.second;
583 packetCallbacks.remove(packet.getId());
584 } else {
585 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
586 }
587 }
588 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
589 callback = this.unregisteredIqListener;
590 }
591 }
592 if (callback != null) {
593 callback.onIqPacketReceived(account,packet);
594 }
595 }
596 }
597
598 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
599 final MessagePacket packet = (MessagePacket) processPacket(currentTag,PACKET_MESSAGE);
600 this.messageListener.onMessagePacketReceived(account, packet);
601 }
602
603 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
604 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
605 this.presenceListener.onPresencePacketReceived(account, packet);
606 }
607
608 private void sendStartTLS() throws IOException {
609 final Tag startTLS = Tag.empty("starttls");
610 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
611 tagWriter.writeTag(startTLS);
612 }
613
614 private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
615 tagReader.readTag();
616 try {
617 final SSLContext sc = SSLContext.getInstance("TLS");
618 MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
619 KeyManager[] keyManager;
620 if (account.getPrivateKeyAlias() != null && account.getPassword().isEmpty()) {
621 keyManager = new KeyManager[]{ mKeyManager };
622 } else {
623 keyManager = null;
624 }
625 sc.init(keyManager,new X509TrustManager[]{mInteractive ? trustManager : trustManager.getNonInteractive()},mXmppConnectionService.getRNG());
626 final SSLSocketFactory factory = sc.getSocketFactory();
627 final HostnameVerifier verifier;
628 if (mInteractive) {
629 verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier());
630 } else {
631 verifier = trustManager.wrapHostnameVerifierNonInteractive(new XmppDomainVerifier());
632 }
633 final InetAddress address = socket == null ? null : socket.getInetAddress();
634
635 if (factory == null || address == null || verifier == null) {
636 throw new IOException("could not setup ssl");
637 }
638
639 final SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,address.getHostAddress(), socket.getPort(),true);
640
641 if (sslSocket == null) {
642 throw new IOException("could not initialize ssl socket");
643 }
644
645 final String[] supportProtocols;
646 final Collection<String> supportedProtocols = new LinkedList<>(
647 Arrays.asList(sslSocket.getSupportedProtocols()));
648 supportedProtocols.remove("SSLv3");
649 supportProtocols = supportedProtocols.toArray(new String[supportedProtocols.size()]);
650
651 sslSocket.setEnabledProtocols(supportProtocols);
652
653 final String[] cipherSuites = CryptoHelper.getOrderedCipherSuites(
654 sslSocket.getSupportedCipherSuites());
655 //Log.d(Config.LOGTAG, "Using ciphers: " + Arrays.toString(cipherSuites));
656 if (cipherSuites.length > 0) {
657 sslSocket.setEnabledCipherSuites(cipherSuites);
658 }
659
660 if (!verifier.verify(account.getServer().getDomainpart(),sslSocket.getSession())) {
661 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": TLS certificate verification failed");
662 throw new SecurityException();
663 }
664 tagReader.setInputStream(sslSocket.getInputStream());
665 tagWriter.setOutputStream(sslSocket.getOutputStream());
666 sendStartStream();
667 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": TLS connection established");
668 features.encryptionEnabled = true;
669 final Tag tag = tagReader.readTag();
670 if (tag != null && tag.isStart("stream")) {
671 processStream();
672 } else {
673 throw new IOException("server didn't restart stream after STARTTLS");
674 }
675 sslSocket.close();
676 } catch (final NoSuchAlgorithmException | KeyManagementException e1) {
677 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": TLS certificate verification failed");
678 throw new SecurityException();
679 }
680 }
681
682 private void processStreamFeatures(final Tag currentTag)
683 throws XmlPullParserException, IOException {
684 this.streamFeatures = tagReader.readElement(currentTag);
685 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
686 sendStartTLS();
687 } else if (this.streamFeatures.hasChild("register")
688 && account.isOptionSet(Account.OPTION_REGISTER)
689 && features.encryptionEnabled) {
690 sendRegistryRequest();
691 } else if (!this.streamFeatures.hasChild("register")
692 && account.isOptionSet(Account.OPTION_REGISTER)) {
693 changeStatus(Account.State.REGISTRATION_NOT_SUPPORTED);
694 disconnect(true);
695 } else if (this.streamFeatures.hasChild("mechanisms")
696 && shouldAuthenticate && features.encryptionEnabled) {
697 final List<String> mechanisms = extractMechanisms(streamFeatures
698 .findChild("mechanisms"));
699 final Element auth = new Element("auth");
700 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
701 if (mechanisms.contains("EXTERNAL") && account.getPrivateKeyAlias() != null) {
702 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
703 } else if (mechanisms.contains("SCRAM-SHA-1")) {
704 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
705 } else if (mechanisms.contains("PLAIN")) {
706 saslMechanism = new Plain(tagWriter, account);
707 } else if (mechanisms.contains("DIGEST-MD5")) {
708 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
709 }
710 if (saslMechanism != null) {
711 final JSONObject keys = account.getKeys();
712 try {
713 if (keys.has(Account.PINNED_MECHANISM_KEY) &&
714 keys.getInt(Account.PINNED_MECHANISM_KEY) > saslMechanism.getPriority()) {
715 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
716 " has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
717 ") than pinned priority (" + keys.getInt(Account.PINNED_MECHANISM_KEY) +
718 "). Possible downgrade attack?");
719 throw new SecurityException();
720 }
721 } catch (final JSONException e) {
722 Log.d(Config.LOGTAG, "Parse error while checking pinned auth mechanism");
723 }
724 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
725 auth.setAttribute("mechanism", saslMechanism.getMechanism());
726 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
727 auth.setContent(saslMechanism.getClientFirstMessage());
728 }
729 tagWriter.writeElement(auth);
730 } else {
731 throw new IncompatibleServerException();
732 }
733 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
734 if (Config.EXTENDED_SM_LOGGING) {
735 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": resuming after stanza #"+stanzasReceived);
736 }
737 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
738 this.tagWriter.writeStanzaAsync(resume);
739 } else if (needsBinding) {
740 if (this.streamFeatures.hasChild("bind")) {
741 sendBindRequest();
742 } else {
743 throw new IncompatibleServerException();
744 }
745 }
746 }
747
748 private List<String> extractMechanisms(final Element stream) {
749 final ArrayList<String> mechanisms = new ArrayList<>(stream
750 .getChildren().size());
751 for (final Element child : stream.getChildren()) {
752 mechanisms.add(child.getContent());
753 }
754 return mechanisms;
755 }
756
757 public void sendCaptchaRegistryRequest(String id, Data data) {
758 if (data == null) {
759 setAccountCreationFailed("");
760 } else {
761 IqPacket request = getIqGenerator().generateCreateAccountWithCaptcha(account, id, data);
762 sendIqPacket(request, createPacketReceiveHandler());
763 }
764 }
765
766 private void sendRegistryRequest() {
767 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
768 register.query("jabber:iq:register");
769 register.setTo(account.getServer());
770 sendIqPacket(register, new OnIqPacketReceived() {
771
772 @Override
773 public void onIqPacketReceived(final Account account, final IqPacket packet) {
774 boolean failed = false;
775 if (packet.getType() == IqPacket.TYPE.RESULT
776 && packet.query().hasChild("username")
777 && (packet.query().hasChild("password"))) {
778 final IqPacket register = new IqPacket(IqPacket.TYPE.SET);
779 final Element username = new Element("username").setContent(account.getUsername());
780 final Element password = new Element("password").setContent(account.getPassword());
781 register.query("jabber:iq:register").addChild(username);
782 register.query().addChild(password);
783 sendIqPacket(register, createPacketReceiveHandler());
784 } else if (packet.getType() == IqPacket.TYPE.RESULT
785 && (packet.query().hasChild("x", "jabber:x:data"))) {
786 final Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
787 final Element blob = packet.query().findChild("data", "urn:xmpp:bob");
788 final String id = packet.getId();
789
790 Bitmap captcha = null;
791 if (blob != null) {
792 try {
793 final String base64Blob = blob.getContent();
794 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
795 InputStream stream = new ByteArrayInputStream(strBlob);
796 captcha = BitmapFactory.decodeStream(stream);
797 } catch (Exception e) {
798 //ignored
799 }
800 } else {
801 try {
802 Field url = data.getFieldByName("url");
803 String urlString = url.findChildContent("value");
804 URL uri = new URL(urlString);
805 captcha = BitmapFactory.decodeStream(uri.openConnection().getInputStream());
806 } catch (IOException e) {
807 Log.e(Config.LOGTAG, e.toString());
808 }
809 }
810
811 if (captcha != null) {
812 failed = !mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha);
813 }
814 } else {
815 failed = true;
816 }
817
818 if (failed) {
819 final Element instructions = packet.query().findChild("instructions");
820 setAccountCreationFailed((instructions != null) ? instructions.getContent() : "");
821 }
822 }
823 });
824 }
825
826 private void setAccountCreationFailed(String instructions) {
827 changeStatus(Account.State.REGISTRATION_FAILED);
828 disconnect(true);
829 Log.d(Config.LOGTAG, account.getJid().toBareJid()
830 + ": could not register. instructions are"
831 + instructions);
832 }
833
834 private void sendBindRequest() {
835 while(!mXmppConnectionService.areMessagesInitialized() && socket != null && !socket.isClosed()) {
836 try {
837 Thread.sleep(500);
838 } catch (final InterruptedException ignored) {
839 }
840 }
841 needsBinding = false;
842 clearIqCallbacks();
843 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
844 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
845 .addChild("resource").setContent(account.getResource());
846 this.sendUnmodifiedIqPacket(iq, new OnIqPacketReceived() {
847 @Override
848 public void onIqPacketReceived(final Account account, final IqPacket packet) {
849 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
850 return;
851 }
852 final Element bind = packet.findChild("bind");
853 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
854 final Element jid = bind.findChild("jid");
855 if (jid != null && jid.getContent() != null) {
856 try {
857 account.setResource(Jid.fromString(jid.getContent()).getResourcepart());
858 } catch (final InvalidJidException e) {
859 // TODO: Handle the case where an external JID is technically invalid?
860 }
861 if (streamFeatures.hasChild("session")) {
862 sendStartSession();
863 } else {
864 sendPostBindInitialization();
865 }
866 } else {
867 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure");
868 disconnect(true);
869 }
870 } else {
871 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure");
872 disconnect(true);
873 }
874 }
875 });
876 }
877
878 private void clearIqCallbacks() {
879 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
880 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
881 synchronized (this.packetCallbacks) {
882 if (this.packetCallbacks.size() == 0) {
883 return;
884 }
885 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": clearing "+this.packetCallbacks.size()+" iq callbacks");
886 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
887 while (iterator.hasNext()) {
888 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
889 callbacks.add(entry.second);
890 iterator.remove();
891 }
892 }
893 for(OnIqPacketReceived callback : callbacks) {
894 callback.onIqPacketReceived(account,failurePacket);
895 }
896 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
897 }
898
899 public void sendDiscoTimeout() {
900 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.ERROR); //don't use timeout
901 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
902 synchronized (this.mPendingServiceDiscoveriesIds) {
903 for(String id : mPendingServiceDiscoveriesIds) {
904 synchronized (this.packetCallbacks) {
905 Pair<IqPacket, OnIqPacketReceived> pair = this.packetCallbacks.remove(id);
906 if (pair != null) {
907 callbacks.add(pair.second);
908 }
909 }
910 }
911 this.mPendingServiceDiscoveriesIds.clear();
912 }
913 if (callbacks.size() > 0) {
914 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": sending disco timeout");
915 resetStreamId(); //we don't want to live with this for ever
916 }
917 for(OnIqPacketReceived callback : callbacks) {
918 callback.onIqPacketReceived(account,failurePacket);
919 }
920 }
921
922 private void sendStartSession() {
923 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
924 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
925 this.sendUnmodifiedIqPacket(startSession, new OnIqPacketReceived() {
926 @Override
927 public void onIqPacketReceived(Account account, IqPacket packet) {
928 if (packet.getType() == IqPacket.TYPE.RESULT) {
929 sendPostBindInitialization();
930 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
931 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not init sessions");
932 disconnect(true);
933 }
934 }
935 });
936 }
937
938 private void sendPostBindInitialization() {
939 smVersion = 0;
940 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
941 smVersion = 3;
942 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
943 smVersion = 2;
944 }
945 if (smVersion != 0) {
946 final EnablePacket enable = new EnablePacket(smVersion);
947 tagWriter.writeStanzaAsync(enable);
948 stanzasSent = 0;
949 mStanzaQueue.clear();
950 }
951 features.carbonsEnabled = false;
952 features.blockListRequested = false;
953 synchronized (this.disco) {
954 this.disco.clear();
955 }
956 mPendingServiceDiscoveries = 0;
957 lastDiscoStarted = SystemClock.elapsedRealtime();
958 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": starting service discovery");
959 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
960 sendServiceDiscoveryItems(account.getServer());
961 sendServiceDiscoveryInfo(account.getServer());
962 sendServiceDiscoveryInfo(account.getJid().toBareJid());
963 this.lastSessionStarted = SystemClock.elapsedRealtime();
964 }
965
966 private void sendServiceDiscoveryInfo(final Jid jid) {
967 mPendingServiceDiscoveries++;
968 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
969 iq.setTo(jid);
970 iq.query("http://jabber.org/protocol/disco#info");
971 String id = this.sendIqPacket(iq, new OnIqPacketReceived() {
972
973 @Override
974 public void onIqPacketReceived(final Account account, final IqPacket packet) {
975 if (packet.getType() == IqPacket.TYPE.RESULT) {
976 boolean advancedStreamFeaturesLoaded = false;
977 synchronized (XmppConnection.this.disco) {
978 final List<Element> elements = packet.query().getChildren();
979 final Info info = new Info();
980 for (final Element element : elements) {
981 if (element.getName().equals("identity")) {
982 String type = element.getAttribute("type");
983 String category = element.getAttribute("category");
984 String name = element.getAttribute("name");
985 if (type != null && category != null) {
986 info.identities.add(new Pair<>(category, type));
987 if (type.equals("im") && category.equals("server")) {
988 if (name != null && jid.equals(account.getServer())) {
989 switch (name) {
990 case "Prosody":
991 mServerIdentity = Identity.PROSODY;
992 break;
993 case "ejabberd":
994 mServerIdentity = Identity.EJABBERD;
995 break;
996 case "Slack-XMPP":
997 mServerIdentity = Identity.SLACK;
998 break;
999 }
1000 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server name: " + name);
1001 }
1002 }
1003 }
1004 } else if (element.getName().equals("feature")) {
1005 info.features.add(element.getAttribute("var"));
1006 }
1007 }
1008 disco.put(jid, info);
1009 advancedStreamFeaturesLoaded = disco.containsKey(account.getServer())
1010 && disco.containsKey(account.getJid().toBareJid());
1011 }
1012 if (advancedStreamFeaturesLoaded && (jid.equals(account.getServer()) || jid.equals(account.getJid().toBareJid()))) {
1013 enableAdvancedStreamFeatures();
1014 }
1015 } else {
1016 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not query disco info for " + jid.toString());
1017 }
1018 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1019 mPendingServiceDiscoveries--;
1020 if (mPendingServiceDiscoveries <= 0) {
1021 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": done with service discovery");
1022 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": online with resource " + account.getResource());
1023 changeStatus(Account.State.ONLINE);
1024 if (bindListener != null) {
1025 bindListener.onBind(account);
1026 }
1027 }
1028 }
1029 }
1030 });
1031 synchronized (this.mPendingServiceDiscoveriesIds) {
1032 this.mPendingServiceDiscoveriesIds.add(id);
1033 }
1034 }
1035
1036 private void enableAdvancedStreamFeatures() {
1037 if (getFeatures().carbons() && !features.carbonsEnabled) {
1038 sendEnableCarbons();
1039 }
1040 if (getFeatures().blocking() && !features.blockListRequested) {
1041 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": Requesting block list");
1042 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1043 }
1044 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1045 listener.onAdvancedStreamFeaturesAvailable(account);
1046 }
1047 }
1048
1049 private void sendServiceDiscoveryItems(final Jid server) {
1050 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1051 iq.setTo(server.toDomainJid());
1052 iq.query("http://jabber.org/protocol/disco#items");
1053 this.sendIqPacket(iq, new OnIqPacketReceived() {
1054
1055 @Override
1056 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1057 if (packet.getType() == IqPacket.TYPE.RESULT) {
1058 final List<Element> elements = packet.query().getChildren();
1059 for (final Element element : elements) {
1060 if (element.getName().equals("item")) {
1061 final Jid jid = element.getAttributeAsJid("jid");
1062 if (jid != null && !jid.equals(account.getServer())) {
1063 sendServiceDiscoveryInfo(jid);
1064 }
1065 }
1066 }
1067 } else {
1068 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not query disco items of " + server);
1069 }
1070 }
1071 });
1072 }
1073
1074 private void sendEnableCarbons() {
1075 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1076 iq.addChild("enable", "urn:xmpp:carbons:2");
1077 this.sendIqPacket(iq, new OnIqPacketReceived() {
1078
1079 @Override
1080 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1081 if (!packet.hasChild("error")) {
1082 Log.d(Config.LOGTAG, account.getJid().toBareJid()
1083 + ": successfully enabled carbons");
1084 features.carbonsEnabled = true;
1085 } else {
1086 Log.d(Config.LOGTAG, account.getJid().toBareJid()
1087 + ": error enableing carbons " + packet.toString());
1088 }
1089 }
1090 });
1091 }
1092
1093 private void processStreamError(final Tag currentTag)
1094 throws XmlPullParserException, IOException {
1095 final Element streamError = tagReader.readElement(currentTag);
1096 if (streamError != null && streamError.hasChild("conflict")) {
1097 final String resource = account.getResource().split("\\.")[0];
1098 account.setResource(resource + "." + nextRandomId());
1099 Log.d(Config.LOGTAG,
1100 account.getJid().toBareJid() + ": switching resource due to conflict ("
1101 + account.getResource() + ")");
1102 } else if (streamError != null) {
1103 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": stream error "+streamError.toString());
1104 }
1105 }
1106
1107 private void sendStartStream() throws IOException {
1108 final Tag stream = Tag.start("stream:stream");
1109 stream.setAttribute("to", account.getServer().toString());
1110 stream.setAttribute("version", "1.0");
1111 stream.setAttribute("xml:lang", "en");
1112 stream.setAttribute("xmlns", "jabber:client");
1113 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1114 tagWriter.writeTag(stream);
1115 }
1116
1117 private String nextRandomId() {
1118 return new BigInteger(50, mXmppConnectionService.getRNG()).toString(32);
1119 }
1120
1121 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1122 packet.setFrom(account.getJid());
1123 return this.sendUnmodifiedIqPacket(packet, callback);
1124 }
1125
1126 private synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1127 if (packet.getId() == null) {
1128 final String id = nextRandomId();
1129 packet.setAttribute("id", id);
1130 }
1131 if (callback != null) {
1132 synchronized (this.packetCallbacks) {
1133 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1134 }
1135 }
1136 this.sendPacket(packet);
1137 return packet.getId();
1138 }
1139
1140 public void sendMessagePacket(final MessagePacket packet) {
1141 this.sendPacket(packet);
1142 }
1143
1144 public void sendPresencePacket(final PresencePacket packet) {
1145 this.sendPacket(packet);
1146 }
1147
1148 private synchronized void sendPacket(final AbstractStanza packet) {
1149 if (stanzasSent == Integer.MAX_VALUE) {
1150 resetStreamId();
1151 disconnect(true);
1152 return;
1153 }
1154 tagWriter.writeStanzaAsync(packet);
1155 if (packet instanceof AbstractAcknowledgeableStanza) {
1156 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1157 ++stanzasSent;
1158 this.mStanzaQueue.put(stanzasSent, stanza);
1159 if (stanza instanceof MessagePacket && stanza.getId() != null && getFeatures().sm()) {
1160 if (Config.EXTENDED_SM_LOGGING) {
1161 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1162 }
1163 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1164 }
1165 }
1166 }
1167
1168 public void sendPing() {
1169 if (!r()) {
1170 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1171 iq.setFrom(account.getJid());
1172 iq.addChild("ping", "urn:xmpp:ping");
1173 this.sendIqPacket(iq, null);
1174 }
1175 this.lastPingSent = SystemClock.elapsedRealtime();
1176 }
1177
1178 public void setOnMessagePacketReceivedListener(
1179 final OnMessagePacketReceived listener) {
1180 this.messageListener = listener;
1181 }
1182
1183 public void setOnUnregisteredIqPacketReceivedListener(
1184 final OnIqPacketReceived listener) {
1185 this.unregisteredIqListener = listener;
1186 }
1187
1188 public void setOnPresencePacketReceivedListener(
1189 final OnPresencePacketReceived listener) {
1190 this.presenceListener = listener;
1191 }
1192
1193 public void setOnJinglePacketReceivedListener(
1194 final OnJinglePacketReceived listener) {
1195 this.jingleListener = listener;
1196 }
1197
1198 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1199 this.statusListener = listener;
1200 }
1201
1202 public void setOnBindListener(final OnBindListener listener) {
1203 this.bindListener = listener;
1204 }
1205
1206 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1207 this.acknowledgedListener = listener;
1208 }
1209
1210 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1211 if (!this.advancedStreamFeaturesLoadedListeners.contains(listener)) {
1212 this.advancedStreamFeaturesLoadedListeners.add(listener);
1213 }
1214 }
1215
1216 public void disconnect(final boolean force) {
1217 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": disconnecting force="+Boolean.valueOf(force));
1218 if (force) {
1219 try {
1220 socket.close();
1221 } catch(Exception e) {
1222 Log.d(Config.LOGTAG,account.getJid().toBareJid().toString()+": exception during force close ("+e.getMessage()+")");
1223 }
1224 return;
1225 } else {
1226 resetStreamId();
1227 if (tagWriter.isActive()) {
1228 tagWriter.finish();
1229 try {
1230 int i = 0;
1231 boolean warned = false;
1232 while (!tagWriter.finished() && socket.isConnected() && i <= 10) {
1233 if (!warned) {
1234 Log.d(Config.LOGTAG, account.getJid().toBareJid()+": waiting for tag writer to finish");
1235 warned = true;
1236 }
1237 Thread.sleep(200);
1238 i++;
1239 }
1240 if (warned) {
1241 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": tag writer has finished");
1242 }
1243 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": closing stream");
1244 tagWriter.writeTag(Tag.end("stream:stream"));
1245 } catch (final IOException e) {
1246 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": io exception during disconnect ("+e.getMessage()+")");
1247 } catch (final InterruptedException e) {
1248 Log.d(Config.LOGTAG, "interrupted");
1249 }
1250 }
1251 }
1252 }
1253
1254 public void resetStreamId() {
1255 this.streamId = null;
1256 }
1257
1258 public List<Jid> findDiscoItemsByFeature(final String feature) {
1259 synchronized (this.disco) {
1260 final List<Jid> items = new ArrayList<>();
1261 for (final Entry<Jid, Info> cursor : this.disco.entrySet()) {
1262 if (cursor.getValue().features.contains(feature)) {
1263 items.add(cursor.getKey());
1264 }
1265 }
1266 return items;
1267 }
1268 }
1269
1270 public Jid findDiscoItemByFeature(final String feature) {
1271 final List<Jid> items = findDiscoItemsByFeature(feature);
1272 if (items.size() >= 1) {
1273 return items.get(0);
1274 }
1275 return null;
1276 }
1277
1278 public boolean r() {
1279 if (getFeatures().sm()) {
1280 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1281 return true;
1282 } else {
1283 return false;
1284 }
1285 }
1286
1287 public String getMucServer() {
1288 synchronized (this.disco) {
1289 for (final Entry<Jid, Info> cursor : disco.entrySet()) {
1290 final Info value = cursor.getValue();
1291 if (value.features.contains("http://jabber.org/protocol/muc")
1292 && !value.features.contains("jabber:iq:gateway")
1293 && !value.identities.contains(new Pair<>("conference", "irc"))) {
1294 return cursor.getKey().toString();
1295 }
1296 }
1297 }
1298 return null;
1299 }
1300
1301 public int getTimeToNextAttempt() {
1302 final int interval = (int) (25 * Math.pow(1.5, attempt));
1303 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1304 return interval - secondsSinceLast;
1305 }
1306
1307 public int getAttempt() {
1308 return this.attempt;
1309 }
1310
1311 public Features getFeatures() {
1312 return this.features;
1313 }
1314
1315 public long getLastSessionEstablished() {
1316 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1317 return System.currentTimeMillis() - diff;
1318 }
1319
1320 public long getLastConnect() {
1321 return this.lastConnect;
1322 }
1323
1324 public long getLastPingSent() {
1325 return this.lastPingSent;
1326 }
1327
1328 public long getLastDiscoStarted() {
1329 return this.lastDiscoStarted;
1330 }
1331 public long getLastPacketReceived() {
1332 return this.lastPacketReceived;
1333 }
1334
1335 public void sendActive() {
1336 this.sendPacket(new ActivePacket());
1337 }
1338
1339 public void sendInactive() {
1340 this.sendPacket(new InactivePacket());
1341 }
1342
1343 public void resetAttemptCount() {
1344 this.attempt = 0;
1345 this.lastConnect = 0;
1346 }
1347
1348 public void setInteractive(boolean interactive) {
1349 this.mInteractive = interactive;
1350 }
1351
1352 public Identity getServerIdentity() {
1353 return mServerIdentity;
1354 }
1355
1356 private class Info {
1357 public final ArrayList<String> features = new ArrayList<>();
1358 public final ArrayList<Pair<String,String>> identities = new ArrayList<>();
1359 }
1360
1361 private class UnauthorizedException extends IOException {
1362
1363 }
1364
1365 private class SecurityException extends IOException {
1366
1367 }
1368
1369 private class IncompatibleServerException extends IOException {
1370
1371 }
1372
1373 public enum Identity {
1374 FACEBOOK,
1375 SLACK,
1376 EJABBERD,
1377 PROSODY,
1378 UNKNOWN
1379 }
1380
1381 public class Features {
1382 XmppConnection connection;
1383 private boolean carbonsEnabled = false;
1384 private boolean encryptionEnabled = false;
1385 private boolean blockListRequested = false;
1386
1387 public Features(final XmppConnection connection) {
1388 this.connection = connection;
1389 }
1390
1391 private boolean hasDiscoFeature(final Jid server, final String feature) {
1392 synchronized (XmppConnection.this.disco) {
1393 return connection.disco.containsKey(server) &&
1394 connection.disco.get(server).features.contains(feature);
1395 }
1396 }
1397
1398 public boolean carbons() {
1399 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
1400 }
1401
1402 public boolean blocking() {
1403 return hasDiscoFeature(account.getServer(), Xmlns.BLOCKING);
1404 }
1405
1406 public boolean register() {
1407 return hasDiscoFeature(account.getServer(), Xmlns.REGISTER);
1408 }
1409
1410 public boolean sm() {
1411 return streamId != null
1412 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1413 }
1414
1415 public boolean csi() {
1416 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1417 }
1418
1419 public boolean pep() {
1420 synchronized (XmppConnection.this.disco) {
1421 final Pair<String, String> needle = new Pair<>("pubsub", "pep");
1422 Info info = disco.get(account.getServer());
1423 if (info != null && info.identities.contains(needle)) {
1424 return true;
1425 } else {
1426 info = disco.get(account.getJid().toBareJid());
1427 return info != null && info.identities.contains(needle);
1428 }
1429 }
1430 }
1431
1432 public boolean mam() {
1433 if (hasDiscoFeature(account.getJid().toBareJid(), "urn:xmpp:mam:0")) {
1434 return true;
1435 } else {
1436 return hasDiscoFeature(account.getServer(), "urn:xmpp:mam:0");
1437 }
1438 }
1439
1440 public boolean advancedStreamFeaturesLoaded() {
1441 synchronized (XmppConnection.this.disco) {
1442 return disco.containsKey(account.getServer());
1443 }
1444 }
1445
1446 public boolean rosterVersioning() {
1447 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1448 }
1449
1450 public void setBlockListRequested(boolean value) {
1451 this.blockListRequested = value;
1452 }
1453
1454 public boolean httpUpload() {
1455 return !Config.DISABLE_HTTP_UPLOAD && findDiscoItemsByFeature(Xmlns.HTTP_UPLOAD).size() > 0;
1456 }
1457 }
1458
1459 private IqGenerator getIqGenerator() {
1460 return mXmppConnectionService.getIqGenerator();
1461 }
1462}