1package eu.siacs.conversations.xmpp;
2
3import java.io.IOException;
4import java.io.InputStream;
5import java.io.OutputStream;
6import java.math.BigInteger;
7import java.net.Socket;
8import java.net.UnknownHostException;
9import java.security.KeyManagementException;
10import java.security.NoSuchAlgorithmException;
11import java.security.SecureRandom;
12import java.util.ArrayList;
13import java.util.HashMap;
14import java.util.Hashtable;
15import java.util.List;
16import java.util.Map.Entry;
17
18import javax.net.ssl.HostnameVerifier;
19import javax.net.ssl.SSLContext;
20import javax.net.ssl.SSLSocket;
21import javax.net.ssl.SSLSocketFactory;
22
23import javax.net.ssl.X509TrustManager;
24
25import org.xmlpull.v1.XmlPullParserException;
26
27import de.duenndns.ssl.MemorizingTrustManager;
28
29import android.os.Bundle;
30import android.os.PowerManager;
31import android.os.PowerManager.WakeLock;
32import android.os.SystemClock;
33import android.util.Log;
34import eu.siacs.conversations.entities.Account;
35import eu.siacs.conversations.services.XmppConnectionService;
36import eu.siacs.conversations.utils.CryptoHelper;
37import eu.siacs.conversations.utils.DNSHelper;
38import eu.siacs.conversations.utils.zlib.ZLibOutputStream;
39import eu.siacs.conversations.utils.zlib.ZLibInputStream;
40import eu.siacs.conversations.xml.Element;
41import eu.siacs.conversations.xml.Tag;
42import eu.siacs.conversations.xml.TagWriter;
43import eu.siacs.conversations.xml.XmlReader;
44import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
45import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
46import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
47import eu.siacs.conversations.xmpp.stanzas.IqPacket;
48import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
49import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
50import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
51import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
52import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
53import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
54
55public class XmppConnection implements Runnable {
56
57 protected Account account;
58 private static final String LOGTAG = "xmppService";
59
60 private WakeLock wakeLock;
61
62 private SecureRandom mRandom;
63
64 private Socket socket;
65 private XmlReader tagReader;
66 private TagWriter tagWriter;
67
68 private Features features = new Features(this);
69
70 private boolean shouldBind = true;
71 private boolean shouldAuthenticate = true;
72 private Element streamFeatures;
73 private HashMap<String, List<String>> disco = new HashMap<String, List<String>>();
74
75 private String streamId = null;
76 private int smVersion = 3;
77
78 private int stanzasReceived = 0;
79 private int stanzasSent = 0;
80
81 public long lastPaketReceived = 0;
82 public long lastPingSent = 0;
83 public long lastConnect = 0;
84 public long lastSessionStarted = 0;
85
86 private int attempt = 0;
87
88 private static final int PACKET_IQ = 0;
89 private static final int PACKET_MESSAGE = 1;
90 private static final int PACKET_PRESENCE = 2;
91
92 private Hashtable<String, PacketReceived> packetCallbacks = new Hashtable<String, PacketReceived>();
93 private OnPresencePacketReceived presenceListener = null;
94 private OnJinglePacketReceived jingleListener = null;
95 private OnIqPacketReceived unregisteredIqListener = null;
96 private OnMessagePacketReceived messageListener = null;
97 private OnStatusChanged statusListener = null;
98 private OnBindListener bindListener = null;
99 private MemorizingTrustManager mMemorizingTrustManager;
100
101 public XmppConnection(Account account, XmppConnectionService service) {
102 this.mRandom = service.getRNG();
103 this.mMemorizingTrustManager = service.getMemorizingTrustManager();
104 this.account = account;
105 this.wakeLock = service.getPowerManager().newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
106 account.getJid());
107 tagWriter = new TagWriter();
108 }
109
110 protected void changeStatus(int nextStatus) {
111 if (account.getStatus() != nextStatus) {
112 if ((nextStatus == Account.STATUS_OFFLINE)
113 && (account.getStatus() != Account.STATUS_CONNECTING)
114 && (account.getStatus() != Account.STATUS_ONLINE)
115 && (account.getStatus() != Account.STATUS_DISABLED)) {
116 return;
117 }
118 if (nextStatus == Account.STATUS_ONLINE) {
119 this.attempt = 0;
120 }
121 account.setStatus(nextStatus);
122 if (statusListener != null) {
123 statusListener.onStatusChanged(account);
124 }
125 }
126 }
127
128 protected void connect() {
129 Log.d(LOGTAG, account.getJid() + ": connecting");
130 lastConnect = SystemClock.elapsedRealtime();
131 this.attempt++;
132 try {
133 shouldAuthenticate = shouldBind = !account
134 .isOptionSet(Account.OPTION_REGISTER);
135 tagReader = new XmlReader(wakeLock);
136 tagWriter = new TagWriter();
137 packetCallbacks.clear();
138 this.changeStatus(Account.STATUS_CONNECTING);
139 Bundle namePort = DNSHelper.getSRVRecord(account.getServer());
140 if ("timeout".equals(namePort.getString("error"))) {
141 Log.d(LOGTAG, account.getJid() + ": dns timeout");
142 this.changeStatus(Account.STATUS_OFFLINE);
143 return;
144 }
145 String srvRecordServer = namePort.getString("name");
146 String srvIpServer = namePort.getString("ipv4");
147 int srvRecordPort = namePort.getInt("port");
148 if (srvRecordServer != null) {
149 if (srvIpServer != null) {
150 Log.d(LOGTAG, account.getJid() + ": using values from dns "
151 + srvRecordServer + "[" + srvIpServer + "]:"
152 + srvRecordPort);
153 socket = new Socket(srvIpServer, srvRecordPort);
154 } else {
155 Log.d(LOGTAG, account.getJid() + ": using values from dns "
156 + srvRecordServer + ":" + srvRecordPort);
157 socket = new Socket(srvRecordServer, srvRecordPort);
158 }
159 } else {
160 socket = new Socket(account.getServer(), 5222);
161 }
162 OutputStream out = socket.getOutputStream();
163 tagWriter.setOutputStream(out);
164 InputStream in = socket.getInputStream();
165 tagReader.setInputStream(in);
166 tagWriter.beginDocument();
167 sendStartStream();
168 Tag nextTag;
169 while ((nextTag = tagReader.readTag()) != null) {
170 if (nextTag.isStart("stream")) {
171 processStream(nextTag);
172 break;
173 } else {
174 Log.d(LOGTAG, "found unexpected tag: " + nextTag.getName());
175 return;
176 }
177 }
178 if (socket.isConnected()) {
179 socket.close();
180 }
181 } catch (UnknownHostException e) {
182 this.changeStatus(Account.STATUS_SERVER_NOT_FOUND);
183 if (wakeLock.isHeld()) {
184 try { wakeLock.release();} catch (RuntimeException re) {}
185 }
186 return;
187 } catch (IOException e) {
188 this.changeStatus(Account.STATUS_OFFLINE);
189 if (wakeLock.isHeld()) {
190 try { wakeLock.release();} catch (RuntimeException re) {}
191 }
192 return;
193 } catch (NoSuchAlgorithmException e) {
194 this.changeStatus(Account.STATUS_OFFLINE);
195 Log.d(LOGTAG, "compression exception " + e.getMessage());
196 if (wakeLock.isHeld()) {
197 try { wakeLock.release();} catch (RuntimeException re) {}
198 }
199 return;
200 } catch (XmlPullParserException e) {
201 this.changeStatus(Account.STATUS_OFFLINE);
202 Log.d(LOGTAG, "xml exception " + e.getMessage());
203 if (wakeLock.isHeld()) {
204 try { wakeLock.release();} catch (RuntimeException re) {}
205 }
206 return;
207 }
208
209 }
210
211 @Override
212 public void run() {
213 connect();
214 }
215
216 private void processStream(Tag currentTag) throws XmlPullParserException,
217 IOException, NoSuchAlgorithmException {
218 Tag nextTag = tagReader.readTag();
219 while ((nextTag != null) && (!nextTag.isEnd("stream"))) {
220 if (nextTag.isStart("error")) {
221 processStreamError(nextTag);
222 } else if (nextTag.isStart("features")) {
223 processStreamFeatures(nextTag);
224 if ((streamFeatures.getChildren().size() == 1)
225 && (streamFeatures.hasChild("starttls"))
226 && (!account.isOptionSet(Account.OPTION_USETLS))) {
227 changeStatus(Account.STATUS_SERVER_REQUIRES_TLS);
228 }
229 } else if (nextTag.isStart("proceed")) {
230 switchOverToTls(nextTag);
231 } else if (nextTag.isStart("compressed")) {
232 switchOverToZLib(nextTag);
233 } else if (nextTag.isStart("success")) {
234 Log.d(LOGTAG, account.getJid() + ": logged in");
235 tagReader.readTag();
236 tagReader.reset();
237 sendStartStream();
238 processStream(tagReader.readTag());
239 break;
240 } else if (nextTag.isStart("failure")) {
241 tagReader.readElement(nextTag);
242 changeStatus(Account.STATUS_UNAUTHORIZED);
243 } else if (nextTag.isStart("challenge")) {
244 String challange = tagReader.readElement(nextTag).getContent();
245 Element response = new Element("response");
246 response.setAttribute("xmlns",
247 "urn:ietf:params:xml:ns:xmpp-sasl");
248 response.setContent(CryptoHelper.saslDigestMd5(account,
249 challange,mRandom));
250 tagWriter.writeElement(response);
251 } else if (nextTag.isStart("enabled")) {
252 this.stanzasSent = 0;
253 Element enabled = tagReader.readElement(nextTag);
254 if ("true".equals(enabled.getAttribute("resume"))) {
255 this.streamId = enabled.getAttribute("id");
256 Log.d(LOGTAG, account.getJid() + ": stream managment("
257 + smVersion + ") enabled (resumable)");
258 } else {
259 Log.d(LOGTAG, account.getJid() + ": stream managment("
260 + smVersion + ") enabled");
261 }
262 this.lastSessionStarted = SystemClock.elapsedRealtime();
263 this.stanzasReceived = 0;
264 RequestPacket r = new RequestPacket(smVersion);
265 tagWriter.writeStanzaAsync(r);
266 } else if (nextTag.isStart("resumed")) {
267 lastPaketReceived = SystemClock.elapsedRealtime();
268 Log.d(LOGTAG, account.getJid() + ": session resumed");
269 tagReader.readElement(nextTag);
270 sendPing();
271 changeStatus(Account.STATUS_ONLINE);
272 } else if (nextTag.isStart("r")) {
273 tagReader.readElement(nextTag);
274 AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
275 tagWriter.writeStanzaAsync(ack);
276 } else if (nextTag.isStart("a")) {
277 Element ack = tagReader.readElement(nextTag);
278 lastPaketReceived = SystemClock.elapsedRealtime();
279 int serverSequence = Integer.parseInt(ack.getAttribute("h"));
280 if (serverSequence > this.stanzasSent) {
281 this.stanzasSent = serverSequence;
282 }
283 } else if (nextTag.isStart("failed")) {
284 tagReader.readElement(nextTag);
285 Log.d(LOGTAG, account.getJid() + ": resumption failed");
286 streamId = null;
287 if (account.getStatus() != Account.STATUS_ONLINE) {
288 sendBindRequest();
289 }
290 } else if (nextTag.isStart("iq")) {
291 processIq(nextTag);
292 } else if (nextTag.isStart("message")) {
293 processMessage(nextTag);
294 } else if (nextTag.isStart("presence")) {
295 processPresence(nextTag);
296 }
297 nextTag = tagReader.readTag();
298 }
299 if (account.getStatus() == Account.STATUS_ONLINE) {
300 account.setStatus(Account.STATUS_OFFLINE);
301 if (statusListener != null) {
302 statusListener.onStatusChanged(account);
303 }
304 }
305 }
306
307 private Element processPacket(Tag currentTag, int packetType)
308 throws XmlPullParserException, IOException {
309 Element element;
310 switch (packetType) {
311 case PACKET_IQ:
312 element = new IqPacket();
313 break;
314 case PACKET_MESSAGE:
315 element = new MessagePacket();
316 break;
317 case PACKET_PRESENCE:
318 element = new PresencePacket();
319 break;
320 default:
321 return null;
322 }
323 element.setAttributes(currentTag.getAttributes());
324 Tag nextTag = tagReader.readTag();
325 if (nextTag==null) {
326 throw new IOException("interrupted mid tag");
327 }
328 while (!nextTag.isEnd(element.getName())) {
329 if (!nextTag.isNo()) {
330 Element child = tagReader.readElement(nextTag);
331 if ((packetType == PACKET_IQ)
332 && ("jingle".equals(child.getName()))) {
333 element = new JinglePacket();
334 element.setAttributes(currentTag.getAttributes());
335 }
336 element.addChild(child);
337 }
338 nextTag = tagReader.readTag();
339 if (nextTag==null) {
340 throw new IOException("interrupted mid tag");
341 }
342 }
343 ++stanzasReceived;
344 lastPaketReceived = SystemClock.elapsedRealtime();
345 return element;
346 }
347
348 private void processIq(Tag currentTag) throws XmlPullParserException,
349 IOException {
350 IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
351
352 if (packet.getId() == null) {
353 return; // an iq packet without id is definitely invalid
354 }
355
356 if (packet instanceof JinglePacket) {
357 if (this.jingleListener != null) {
358 this.jingleListener.onJinglePacketReceived(account,
359 (JinglePacket) packet);
360 }
361 } else {
362 if (packetCallbacks.containsKey(packet.getId())) {
363 if (packetCallbacks.get(packet.getId()) instanceof OnIqPacketReceived) {
364 ((OnIqPacketReceived) packetCallbacks.get(packet.getId()))
365 .onIqPacketReceived(account, packet);
366 }
367
368 packetCallbacks.remove(packet.getId());
369 } else if (this.unregisteredIqListener != null) {
370 this.unregisteredIqListener.onIqPacketReceived(account, packet);
371 }
372 }
373 }
374
375 private void processMessage(Tag currentTag) throws XmlPullParserException,
376 IOException {
377 MessagePacket packet = (MessagePacket) processPacket(currentTag,
378 PACKET_MESSAGE);
379 String id = packet.getAttribute("id");
380 if ((id != null) && (packetCallbacks.containsKey(id))) {
381 if (packetCallbacks.get(id) instanceof OnMessagePacketReceived) {
382 ((OnMessagePacketReceived) packetCallbacks.get(id))
383 .onMessagePacketReceived(account, packet);
384 }
385 packetCallbacks.remove(id);
386 } else if (this.messageListener != null) {
387 this.messageListener.onMessagePacketReceived(account, packet);
388 }
389 }
390
391 private void processPresence(Tag currentTag) throws XmlPullParserException,
392 IOException {
393 PresencePacket packet = (PresencePacket) processPacket(currentTag,
394 PACKET_PRESENCE);
395 String id = packet.getAttribute("id");
396 if ((id != null) && (packetCallbacks.containsKey(id))) {
397 if (packetCallbacks.get(id) instanceof OnPresencePacketReceived) {
398 ((OnPresencePacketReceived) packetCallbacks.get(id))
399 .onPresencePacketReceived(account, packet);
400 }
401 packetCallbacks.remove(id);
402 } else if (this.presenceListener != null) {
403 this.presenceListener.onPresencePacketReceived(account, packet);
404 }
405 }
406
407 private void sendCompressionZlib() throws IOException {
408 Element compress = new Element("compress");
409 compress.setAttribute("xmlns", "http://jabber.org/protocol/compress");
410 compress.addChild("method").setContent("zlib");
411 tagWriter.writeElement(compress);
412 }
413
414 private void switchOverToZLib(Tag currentTag)
415 throws XmlPullParserException, IOException,
416 NoSuchAlgorithmException {
417 tagReader.readTag(); // read tag close
418
419 if (!tagWriter.isActive()) {
420 throw new IOException();
421 }
422 tagWriter.setOutputStream(new ZLibOutputStream(tagWriter
423 .getOutputStream()));
424 if (tagReader.getInputStream() == null) {
425 throw new IOException();
426 }
427 tagReader
428 .setInputStream(new ZLibInputStream(tagReader.getInputStream()));
429
430 sendStartStream();
431 Log.d(LOGTAG, account.getJid() + ": compression enabled");
432 processStream(tagReader.readTag());
433 }
434
435 private void sendStartTLS() throws IOException {
436 Tag startTLS = Tag.empty("starttls");
437 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
438 tagWriter.writeTag(startTLS);
439 }
440
441 private void switchOverToTls(Tag currentTag) throws XmlPullParserException,
442 IOException {
443 tagReader.readTag();
444 try {
445 SSLContext sc = SSLContext.getInstance("TLS");
446 sc.init(null, new X509TrustManager[] { this.mMemorizingTrustManager }, mRandom);
447 SSLSocketFactory factory = sc.getSocketFactory();
448
449 HostnameVerifier verifier = this.mMemorizingTrustManager.wrapHostnameVerifier(new org.apache.http.conn.ssl.StrictHostnameVerifier());
450 SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,
451 socket.getInetAddress().getHostAddress(), socket.getPort(),
452 true);
453
454 if (verifier != null && !verifier.verify(account.getServer(), sslSocket.getSession())) {
455 Log.d(LOGTAG, account.getJid() + ": host mismatch in TLS connection");
456 sslSocket.close();
457 throw new IOException();
458 }
459 tagReader.setInputStream(sslSocket.getInputStream());
460 tagWriter.setOutputStream(sslSocket.getOutputStream());
461 sendStartStream();
462 Log.d(LOGTAG, account.getJid() + ": TLS connection established");
463 processStream(tagReader.readTag());
464 sslSocket.close();
465 } catch (NoSuchAlgorithmException e1) {
466 e1.printStackTrace();
467 } catch (KeyManagementException e) {
468 e.printStackTrace();
469 }
470 }
471
472 private void sendSaslAuthPlain() throws IOException {
473 String saslString = CryptoHelper.saslPlain(account.getUsername(),
474 account.getPassword());
475 Element auth = new Element("auth");
476 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
477 auth.setAttribute("mechanism", "PLAIN");
478 auth.setContent(saslString);
479 tagWriter.writeElement(auth);
480 }
481
482 private void sendSaslAuthDigestMd5() throws IOException {
483 Element auth = new Element("auth");
484 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
485 auth.setAttribute("mechanism", "DIGEST-MD5");
486 tagWriter.writeElement(auth);
487 }
488
489 private void processStreamFeatures(Tag currentTag)
490 throws XmlPullParserException, IOException {
491 this.streamFeatures = tagReader.readElement(currentTag);
492 if (this.streamFeatures.hasChild("starttls")
493 && account.isOptionSet(Account.OPTION_USETLS)) {
494 sendStartTLS();
495 } else if (compressionAvailable()) {
496 sendCompressionZlib();
497 } else if (this.streamFeatures.hasChild("register")
498 && (account.isOptionSet(Account.OPTION_REGISTER))) {
499 sendRegistryRequest();
500 } else if (!this.streamFeatures.hasChild("register")
501 && (account.isOptionSet(Account.OPTION_REGISTER))) {
502 changeStatus(Account.STATUS_REGISTRATION_NOT_SUPPORTED);
503 disconnect(true);
504 } else if (this.streamFeatures.hasChild("mechanisms")
505 && shouldAuthenticate) {
506 List<String> mechanisms = extractMechanisms(streamFeatures
507 .findChild("mechanisms"));
508 if (mechanisms.contains("PLAIN")) {
509 sendSaslAuthPlain();
510 } else if (mechanisms.contains("DIGEST-MD5")) {
511 sendSaslAuthDigestMd5();
512 }
513 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:"
514 + smVersion)
515 && streamId != null) {
516 ResumePacket resume = new ResumePacket(this.streamId,
517 stanzasReceived, smVersion);
518 this.tagWriter.writeStanzaAsync(resume);
519 } else if (this.streamFeatures.hasChild("bind") && shouldBind) {
520 sendBindRequest();
521 }
522 }
523
524 private boolean compressionAvailable() {
525 if (!this.streamFeatures.hasChild("compression",
526 "http://jabber.org/features/compress"))
527 return false;
528 if (!ZLibOutputStream.SUPPORTED)
529 return false;
530 if (!account.isOptionSet(Account.OPTION_USECOMPRESSION))
531 return false;
532
533 Element compression = this.streamFeatures.findChild("compression",
534 "http://jabber.org/features/compress");
535 for (Element child : compression.getChildren()) {
536 if (!"method".equals(child.getName()))
537 continue;
538
539 if ("zlib".equalsIgnoreCase(child.getContent())) {
540 return true;
541 }
542 }
543 return false;
544 }
545
546 private List<String> extractMechanisms(Element stream) {
547 ArrayList<String> mechanisms = new ArrayList<String>(stream
548 .getChildren().size());
549 for (Element child : stream.getChildren()) {
550 mechanisms.add(child.getContent());
551 }
552 return mechanisms;
553 }
554
555 private void sendRegistryRequest() {
556 IqPacket register = new IqPacket(IqPacket.TYPE_GET);
557 register.query("jabber:iq:register");
558 register.setTo(account.getServer());
559 sendIqPacket(register, new OnIqPacketReceived() {
560
561 @Override
562 public void onIqPacketReceived(Account account, IqPacket packet) {
563 Element instructions = packet.query().findChild("instructions");
564 if (packet.query().hasChild("username")
565 && (packet.query().hasChild("password"))) {
566 IqPacket register = new IqPacket(IqPacket.TYPE_SET);
567 Element username = new Element("username")
568 .setContent(account.getUsername());
569 Element password = new Element("password")
570 .setContent(account.getPassword());
571 register.query("jabber:iq:register").addChild(username);
572 register.query().addChild(password);
573 sendIqPacket(register, new OnIqPacketReceived() {
574
575 @Override
576 public void onIqPacketReceived(Account account,
577 IqPacket packet) {
578 if (packet.getType() == IqPacket.TYPE_RESULT) {
579 account.setOption(Account.OPTION_REGISTER,
580 false);
581 changeStatus(Account.STATUS_REGISTRATION_SUCCESSFULL);
582 } else if (packet.hasChild("error")
583 && (packet.findChild("error")
584 .hasChild("conflict"))) {
585 changeStatus(Account.STATUS_REGISTRATION_CONFLICT);
586 } else {
587 changeStatus(Account.STATUS_REGISTRATION_FAILED);
588 Log.d(LOGTAG, packet.toString());
589 }
590 disconnect(true);
591 }
592 });
593 } else {
594 changeStatus(Account.STATUS_REGISTRATION_FAILED);
595 disconnect(true);
596 Log.d(LOGTAG, account.getJid()
597 + ": could not register. instructions are"
598 + instructions.getContent());
599 }
600 }
601 });
602 }
603
604 private void sendBindRequest() throws IOException {
605 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
606 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
607 .addChild("resource").setContent(account.getResource());
608 this.sendUnboundIqPacket(iq, new OnIqPacketReceived() {
609 @Override
610 public void onIqPacketReceived(Account account, IqPacket packet) {
611 Element bind = packet.findChild("bind");
612 if (bind!=null) {
613 Element jid = bind.findChild("jid");
614 if (jid!=null) {
615 account.setResource(jid.getContent().split("/")[1]);
616 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
617 smVersion = 3;
618 EnablePacket enable = new EnablePacket(smVersion);
619 tagWriter.writeStanzaAsync(enable);
620 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
621 smVersion = 2;
622 EnablePacket enable = new EnablePacket(smVersion);
623 tagWriter.writeStanzaAsync(enable);
624 }
625 sendServiceDiscoveryInfo(account.getServer());
626 sendServiceDiscoveryItems(account.getServer());
627 if (bindListener != null) {
628 bindListener.onBind(account);
629 }
630 changeStatus(Account.STATUS_ONLINE);
631 } else {
632 disconnect(true);
633 }
634 } else {
635 disconnect(true);
636 }
637 }
638 });
639 if (this.streamFeatures.hasChild("session")) {
640 Log.d(LOGTAG, account.getJid() + ": sending deprecated session");
641 IqPacket startSession = new IqPacket(IqPacket.TYPE_SET);
642 startSession.addChild("session",
643 "urn:ietf:params:xml:ns:xmpp-session");
644 this.sendUnboundIqPacket(startSession, null);
645 }
646 }
647
648 private void sendServiceDiscoveryInfo(final String server) {
649 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
650 iq.setTo(server);
651 iq.query("http://jabber.org/protocol/disco#info");
652 this.sendIqPacket(iq, new OnIqPacketReceived() {
653
654 @Override
655 public void onIqPacketReceived(Account account, IqPacket packet) {
656 List<Element> elements = packet.query().getChildren();
657 List<String> features = new ArrayList<String>();
658 for (int i = 0; i < elements.size(); ++i) {
659 if (elements.get(i).getName().equals("feature")) {
660 features.add(elements.get(i).getAttribute("var"));
661 }
662 }
663 disco.put(server, features);
664
665 if (account.getServer().equals(server)) {
666 enableAdvancedStreamFeatures();
667 }
668 }
669 });
670 }
671
672 private void enableAdvancedStreamFeatures() {
673 if (getFeatures().carbons()) {
674 sendEnableCarbons();
675 }
676 }
677
678 private void sendServiceDiscoveryItems(final String server) {
679 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
680 iq.setTo(server);
681 iq.query("http://jabber.org/protocol/disco#items");
682 this.sendIqPacket(iq, new OnIqPacketReceived() {
683
684 @Override
685 public void onIqPacketReceived(Account account, IqPacket packet) {
686 List<Element> elements = packet.query().getChildren();
687 for (int i = 0; i < elements.size(); ++i) {
688 if (elements.get(i).getName().equals("item")) {
689 String jid = elements.get(i).getAttribute("jid");
690 sendServiceDiscoveryInfo(jid);
691 }
692 }
693 }
694 });
695 }
696
697 private void sendEnableCarbons() {
698 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
699 iq.addChild("enable", "urn:xmpp:carbons:2");
700 this.sendIqPacket(iq, new OnIqPacketReceived() {
701
702 @Override
703 public void onIqPacketReceived(Account account, IqPacket packet) {
704 if (!packet.hasChild("error")) {
705 Log.d(LOGTAG, account.getJid()
706 + ": successfully enabled carbons");
707 } else {
708 Log.d(LOGTAG, account.getJid()
709 + ": error enableing carbons " + packet.toString());
710 }
711 }
712 });
713 }
714
715 private void processStreamError(Tag currentTag) {
716 Log.d(LOGTAG, "processStreamError");
717 }
718
719 private void sendStartStream() throws IOException {
720 Tag stream = Tag.start("stream:stream");
721 stream.setAttribute("from", account.getJid());
722 stream.setAttribute("to", account.getServer());
723 stream.setAttribute("version", "1.0");
724 stream.setAttribute("xml:lang", "en");
725 stream.setAttribute("xmlns", "jabber:client");
726 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
727 tagWriter.writeTag(stream);
728 }
729
730 private String nextRandomId() {
731 return new BigInteger(50, mRandom).toString(32);
732 }
733
734 public void sendIqPacket(IqPacket packet, OnIqPacketReceived callback) {
735 if (packet.getId() == null) {
736 String id = nextRandomId();
737 packet.setAttribute("id", id);
738 }
739 packet.setFrom(account.getFullJid());
740 this.sendPacket(packet, callback);
741 }
742
743 public void sendUnboundIqPacket(IqPacket packet, OnIqPacketReceived callback) {
744 if (packet.getId() == null) {
745 String id = nextRandomId();
746 packet.setAttribute("id", id);
747 }
748 this.sendPacket(packet, callback);
749 }
750
751 public void sendMessagePacket(MessagePacket packet) {
752 this.sendPacket(packet, null);
753 }
754
755 public void sendPresencePacket(PresencePacket packet) {
756 this.sendPacket(packet, null);
757 }
758
759 private synchronized void sendPacket(final AbstractStanza packet,
760 PacketReceived callback) {
761 // TODO dont increment stanza count if packet = request packet or ack;
762 ++stanzasSent;
763 tagWriter.writeStanzaAsync(packet);
764 if (callback != null) {
765 if (packet.getId() == null) {
766 packet.setId(nextRandomId());
767 }
768 packetCallbacks.put(packet.getId(), callback);
769 }
770 }
771
772 public void sendPing() {
773 if (streamFeatures.hasChild("sm")) {
774 tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
775 } else {
776 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
777 iq.setFrom(account.getFullJid());
778 iq.addChild("ping", "urn:xmpp:ping");
779 this.sendIqPacket(iq, null);
780 }
781 }
782
783 public void setOnMessagePacketReceivedListener(
784 OnMessagePacketReceived listener) {
785 this.messageListener = listener;
786 }
787
788 public void setOnUnregisteredIqPacketReceivedListener(
789 OnIqPacketReceived listener) {
790 this.unregisteredIqListener = listener;
791 }
792
793 public void setOnPresencePacketReceivedListener(
794 OnPresencePacketReceived listener) {
795 this.presenceListener = listener;
796 }
797
798 public void setOnJinglePacketReceivedListener(
799 OnJinglePacketReceived listener) {
800 this.jingleListener = listener;
801 }
802
803 public void setOnStatusChangedListener(OnStatusChanged listener) {
804 this.statusListener = listener;
805 }
806
807 public void setOnBindListener(OnBindListener listener) {
808 this.bindListener = listener;
809 }
810
811 public void disconnect(boolean force) {
812 changeStatus(Account.STATUS_OFFLINE);
813 Log.d(LOGTAG, "disconnecting");
814 try {
815 if (force) {
816 socket.close();
817 return;
818 }
819 new Thread(new Runnable() {
820
821 @Override
822 public void run() {
823 if (tagWriter.isActive()) {
824 tagWriter.finish();
825 try {
826 while (!tagWriter.finished()) {
827 Log.d(LOGTAG, "not yet finished");
828 Thread.sleep(100);
829 }
830 tagWriter.writeTag(Tag.end("stream:stream"));
831 } catch (IOException e) {
832 Log.d(LOGTAG, "io exception during disconnect");
833 } catch (InterruptedException e) {
834 Log.d(LOGTAG, "interrupted");
835 }
836 }
837 }
838 }).start();
839 } catch (IOException e) {
840 Log.d(LOGTAG, "io exception during disconnect");
841 }
842 }
843
844 public List<String> findDiscoItemsByFeature(String feature) {
845 List<String> items = new ArrayList<String>();
846 for (Entry<String, List<String>> cursor : disco.entrySet()) {
847 if (cursor.getValue().contains(feature)) {
848 items.add(cursor.getKey());
849 }
850 }
851 return items;
852 }
853
854 public String findDiscoItemByFeature(String feature) {
855 List<String> items = findDiscoItemsByFeature(feature);
856 if (items.size()>=1) {
857 return items.get(0);
858 }
859 return null;
860 }
861
862 public void r() {
863 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
864 }
865
866 public int getReceivedStanzas() {
867 return this.stanzasReceived;
868 }
869
870 public int getSentStanzas() {
871 return this.stanzasSent;
872 }
873
874 public String getMucServer() {
875 return findDiscoItemByFeature("http://jabber.org/protocol/muc");
876 }
877
878 public int getTimeToNextAttempt() {
879 int interval = (int) (25 * Math.pow(1.5, attempt));
880 int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
881 return interval - secondsSinceLast;
882 }
883
884 public int getAttempt() {
885 return this.attempt;
886 }
887
888 public Features getFeatures() {
889 return this.features;
890 }
891
892 public class Features {
893 XmppConnection connection;
894 public Features(XmppConnection connection) {
895 this.connection = connection;
896 }
897
898 private boolean hasDiscoFeature(String server, String feature) {
899 if (!connection.disco.containsKey(server)) {
900 return false;
901 }
902 return connection.disco.get(server).contains(feature);
903 }
904
905 public boolean carbons() {
906 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
907 }
908
909 public boolean sm() {
910 if (connection.streamFeatures == null) {
911 return false;
912 } else {
913 return connection.streamFeatures.hasChild("sm");
914 }
915 }
916
917 public boolean pubsub() {
918 return hasDiscoFeature(account.getServer(), "http://jabber.org/protocol/pubsub#publish");
919 }
920
921 public boolean rosterVersioning() {
922 if (connection.streamFeatures == null) {
923 return false;
924 } else {
925 return connection.streamFeatures.hasChild("ver");
926 }
927 }
928 }
929}