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.csi.ActivePacket;
51import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
52import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
53import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
54import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
55import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
56
57public class XmppConnection implements Runnable {
58
59 protected Account account;
60 private static final String LOGTAG = "xmppService";
61
62 private WakeLock wakeLock;
63
64 private SecureRandom mRandom;
65
66 private Socket socket;
67 private XmlReader tagReader;
68 private TagWriter tagWriter;
69
70 private Features features = new Features(this);
71
72 private boolean shouldBind = true;
73 private boolean shouldAuthenticate = true;
74 private Element streamFeatures;
75 private HashMap<String, List<String>> disco = new HashMap<String, List<String>>();
76
77 private String streamId = null;
78 private int smVersion = 3;
79
80 private boolean usingCompression = false;
81
82 private int stanzasReceived = 0;
83 private int stanzasSent = 0;
84
85 private long lastPaketReceived = 0;
86 private long lastPingSent = 0;
87 private long lastConnect = 0;
88 private long lastSessionStarted = 0;
89
90 private int attempt = 0;
91
92 private static final int PACKET_IQ = 0;
93 private static final int PACKET_MESSAGE = 1;
94 private static final int PACKET_PRESENCE = 2;
95
96 private Hashtable<String, PacketReceived> packetCallbacks = new Hashtable<String, PacketReceived>();
97 private OnPresencePacketReceived presenceListener = null;
98 private OnJinglePacketReceived jingleListener = null;
99 private OnIqPacketReceived unregisteredIqListener = null;
100 private OnMessagePacketReceived messageListener = null;
101 private OnStatusChanged statusListener = null;
102 private OnBindListener bindListener = null;
103 private MemorizingTrustManager mMemorizingTrustManager;
104
105 public XmppConnection(Account account, XmppConnectionService service) {
106 this.mRandom = service.getRNG();
107 this.mMemorizingTrustManager = service.getMemorizingTrustManager();
108 this.account = account;
109 this.wakeLock = service.getPowerManager().newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
110 account.getJid());
111 tagWriter = new TagWriter();
112 }
113
114 protected void changeStatus(int nextStatus) {
115 if (account.getStatus() != nextStatus) {
116 if ((nextStatus == Account.STATUS_OFFLINE)
117 && (account.getStatus() != Account.STATUS_CONNECTING)
118 && (account.getStatus() != Account.STATUS_ONLINE)
119 && (account.getStatus() != Account.STATUS_DISABLED)) {
120 return;
121 }
122 if (nextStatus == Account.STATUS_ONLINE) {
123 this.attempt = 0;
124 }
125 account.setStatus(nextStatus);
126 if (statusListener != null) {
127 statusListener.onStatusChanged(account);
128 }
129 }
130 }
131
132 protected void connect() {
133 Log.d(LOGTAG, account.getJid() + ": connecting");
134 usingCompression = false;
135 lastConnect = SystemClock.elapsedRealtime();
136 lastPingSent = SystemClock.elapsedRealtime();
137 this.attempt++;
138 try {
139 shouldAuthenticate = shouldBind = !account
140 .isOptionSet(Account.OPTION_REGISTER);
141 tagReader = new XmlReader(wakeLock);
142 tagWriter = new TagWriter();
143 packetCallbacks.clear();
144 this.changeStatus(Account.STATUS_CONNECTING);
145 Bundle namePort = DNSHelper.getSRVRecord(account.getServer());
146 if ("timeout".equals(namePort.getString("error"))) {
147 Log.d(LOGTAG, account.getJid() + ": dns timeout");
148 this.changeStatus(Account.STATUS_OFFLINE);
149 return;
150 }
151 String srvRecordServer = namePort.getString("name");
152 String srvIpServer = namePort.getString("ipv4");
153 int srvRecordPort = namePort.getInt("port");
154 if (srvRecordServer != null) {
155 if (srvIpServer != null) {
156 Log.d(LOGTAG, account.getJid() + ": using values from dns "
157 + srvRecordServer + "[" + srvIpServer + "]:"
158 + srvRecordPort);
159 socket = new Socket(srvIpServer, srvRecordPort);
160 } else {
161 Log.d(LOGTAG, account.getJid() + ": using values from dns "
162 + srvRecordServer + ":" + srvRecordPort);
163 socket = new Socket(srvRecordServer, srvRecordPort);
164 }
165 } else {
166 socket = new Socket(account.getServer(), 5222);
167 }
168 OutputStream out = socket.getOutputStream();
169 tagWriter.setOutputStream(out);
170 InputStream in = socket.getInputStream();
171 tagReader.setInputStream(in);
172 tagWriter.beginDocument();
173 sendStartStream();
174 Tag nextTag;
175 while ((nextTag = tagReader.readTag()) != null) {
176 if (nextTag.isStart("stream")) {
177 processStream(nextTag);
178 break;
179 } else {
180 Log.d(LOGTAG, "found unexpected tag: " + nextTag.getName());
181 return;
182 }
183 }
184 if (socket.isConnected()) {
185 socket.close();
186 }
187 } catch (UnknownHostException e) {
188 this.changeStatus(Account.STATUS_SERVER_NOT_FOUND);
189 if (wakeLock.isHeld()) {
190 try { wakeLock.release();} catch (RuntimeException re) {}
191 }
192 return;
193 } catch (IOException e) {
194 this.changeStatus(Account.STATUS_OFFLINE);
195 if (wakeLock.isHeld()) {
196 try { wakeLock.release();} catch (RuntimeException re) {}
197 }
198 return;
199 } catch (NoSuchAlgorithmException e) {
200 this.changeStatus(Account.STATUS_OFFLINE);
201 Log.d(LOGTAG, "compression exception " + e.getMessage());
202 if (wakeLock.isHeld()) {
203 try { wakeLock.release();} catch (RuntimeException re) {}
204 }
205 return;
206 } catch (XmlPullParserException e) {
207 this.changeStatus(Account.STATUS_OFFLINE);
208 Log.d(LOGTAG, "xml exception " + e.getMessage());
209 if (wakeLock.isHeld()) {
210 try { wakeLock.release();} catch (RuntimeException re) {}
211 }
212 return;
213 }
214
215 }
216
217 @Override
218 public void run() {
219 connect();
220 }
221
222 private void processStream(Tag currentTag) throws XmlPullParserException,
223 IOException, NoSuchAlgorithmException {
224 Tag nextTag = tagReader.readTag();
225 while ((nextTag != null) && (!nextTag.isEnd("stream"))) {
226 if (nextTag.isStart("error")) {
227 processStreamError(nextTag);
228 } else if (nextTag.isStart("features")) {
229 processStreamFeatures(nextTag);
230 } else if (nextTag.isStart("proceed")) {
231 switchOverToTls(nextTag);
232 } else if (nextTag.isStart("compressed")) {
233 switchOverToZLib(nextTag);
234 } else if (nextTag.isStart("success")) {
235 Log.d(LOGTAG, account.getJid() + ": logged in");
236 tagReader.readTag();
237 tagReader.reset();
238 sendStartStream();
239 processStream(tagReader.readTag());
240 break;
241 } else if (nextTag.isStart("failure")) {
242 tagReader.readElement(nextTag);
243 changeStatus(Account.STATUS_UNAUTHORIZED);
244 } else if (nextTag.isStart("challenge")) {
245 String challange = tagReader.readElement(nextTag).getContent();
246 Element response = new Element("response");
247 response.setAttribute("xmlns",
248 "urn:ietf:params:xml:ns:xmpp-sasl");
249 response.setContent(CryptoHelper.saslDigestMd5(account,
250 challange,mRandom));
251 tagWriter.writeElement(response);
252 } else if (nextTag.isStart("enabled")) {
253 this.stanzasSent = 0;
254 Element enabled = tagReader.readElement(nextTag);
255 if ("true".equals(enabled.getAttribute("resume"))) {
256 this.streamId = enabled.getAttribute("id");
257 Log.d(LOGTAG, account.getJid() + ": stream managment("
258 + smVersion + ") enabled (resumable)");
259 } else {
260 Log.d(LOGTAG, account.getJid() + ": stream managment("
261 + smVersion + ") enabled");
262 }
263 this.lastSessionStarted = SystemClock.elapsedRealtime();
264 this.stanzasReceived = 0;
265 RequestPacket r = new RequestPacket(smVersion);
266 tagWriter.writeStanzaAsync(r);
267 } else if (nextTag.isStart("resumed")) {
268 lastPaketReceived = SystemClock.elapsedRealtime();
269 Log.d(LOGTAG, account.getJid() + ": session resumed");
270 tagReader.readElement(nextTag);
271 sendPing();
272 changeStatus(Account.STATUS_ONLINE);
273 } else if (nextTag.isStart("r")) {
274 tagReader.readElement(nextTag);
275 AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
276 tagWriter.writeStanzaAsync(ack);
277 } else if (nextTag.isStart("a")) {
278 Element ack = tagReader.readElement(nextTag);
279 lastPaketReceived = SystemClock.elapsedRealtime();
280 int serverSequence = Integer.parseInt(ack.getAttribute("h"));
281 if (serverSequence > this.stanzasSent) {
282 this.stanzasSent = serverSequence;
283 }
284 } else if (nextTag.isStart("failed")) {
285 tagReader.readElement(nextTag);
286 Log.d(LOGTAG, account.getJid() + ": resumption failed");
287 streamId = null;
288 if (account.getStatus() != Account.STATUS_ONLINE) {
289 sendBindRequest();
290 }
291 } else if (nextTag.isStart("iq")) {
292 processIq(nextTag);
293 } else if (nextTag.isStart("message")) {
294 processMessage(nextTag);
295 } else if (nextTag.isStart("presence")) {
296 processPresence(nextTag);
297 }
298 nextTag = tagReader.readTag();
299 }
300 if (account.getStatus() == Account.STATUS_ONLINE) {
301 account.setStatus(Account.STATUS_OFFLINE);
302 if (statusListener != null) {
303 statusListener.onStatusChanged(account);
304 }
305 }
306 }
307
308 private Element processPacket(Tag currentTag, int packetType)
309 throws XmlPullParserException, IOException {
310 Element element;
311 switch (packetType) {
312 case PACKET_IQ:
313 element = new IqPacket();
314 break;
315 case PACKET_MESSAGE:
316 element = new MessagePacket();
317 break;
318 case PACKET_PRESENCE:
319 element = new PresencePacket();
320 break;
321 default:
322 return null;
323 }
324 element.setAttributes(currentTag.getAttributes());
325 Tag nextTag = tagReader.readTag();
326 if (nextTag==null) {
327 throw new IOException("interrupted mid tag");
328 }
329 while (!nextTag.isEnd(element.getName())) {
330 if (!nextTag.isNo()) {
331 Element child = tagReader.readElement(nextTag);
332 if ((packetType == PACKET_IQ)
333 && ("jingle".equals(child.getName()))) {
334 element = new JinglePacket();
335 element.setAttributes(currentTag.getAttributes());
336 }
337 element.addChild(child);
338 }
339 nextTag = tagReader.readTag();
340 if (nextTag==null) {
341 throw new IOException("interrupted mid tag");
342 }
343 }
344 ++stanzasReceived;
345 lastPaketReceived = SystemClock.elapsedRealtime();
346 return element;
347 }
348
349 private void processIq(Tag currentTag) throws XmlPullParserException,
350 IOException {
351 IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
352
353 if (packet.getId() == null) {
354 return; // an iq packet without id is definitely invalid
355 }
356
357 if (packet instanceof JinglePacket) {
358 if (this.jingleListener != null) {
359 this.jingleListener.onJinglePacketReceived(account,
360 (JinglePacket) packet);
361 }
362 } else {
363 if (packetCallbacks.containsKey(packet.getId())) {
364 if (packetCallbacks.get(packet.getId()) instanceof OnIqPacketReceived) {
365 ((OnIqPacketReceived) packetCallbacks.get(packet.getId()))
366 .onIqPacketReceived(account, packet);
367 }
368
369 packetCallbacks.remove(packet.getId());
370 } else if (this.unregisteredIqListener != null) {
371 this.unregisteredIqListener.onIqPacketReceived(account, packet);
372 }
373 }
374 }
375
376 private void processMessage(Tag currentTag) throws XmlPullParserException,
377 IOException {
378 MessagePacket packet = (MessagePacket) processPacket(currentTag,
379 PACKET_MESSAGE);
380 String id = packet.getAttribute("id");
381 if ((id != null) && (packetCallbacks.containsKey(id))) {
382 if (packetCallbacks.get(id) instanceof OnMessagePacketReceived) {
383 ((OnMessagePacketReceived) packetCallbacks.get(id))
384 .onMessagePacketReceived(account, packet);
385 }
386 packetCallbacks.remove(id);
387 } else if (this.messageListener != null) {
388 this.messageListener.onMessagePacketReceived(account, packet);
389 }
390 }
391
392 private void processPresence(Tag currentTag) throws XmlPullParserException,
393 IOException {
394 PresencePacket packet = (PresencePacket) processPacket(currentTag,
395 PACKET_PRESENCE);
396 String id = packet.getAttribute("id");
397 if ((id != null) && (packetCallbacks.containsKey(id))) {
398 if (packetCallbacks.get(id) instanceof OnPresencePacketReceived) {
399 ((OnPresencePacketReceived) packetCallbacks.get(id))
400 .onPresencePacketReceived(account, packet);
401 }
402 packetCallbacks.remove(id);
403 } else if (this.presenceListener != null) {
404 this.presenceListener.onPresencePacketReceived(account, packet);
405 }
406 }
407
408 private void sendCompressionZlib() throws IOException {
409 Element compress = new Element("compress");
410 compress.setAttribute("xmlns", "http://jabber.org/protocol/compress");
411 compress.addChild("method").setContent("zlib");
412 tagWriter.writeElement(compress);
413 }
414
415 private void switchOverToZLib(Tag currentTag)
416 throws XmlPullParserException, IOException,
417 NoSuchAlgorithmException {
418 tagReader.readTag(); // read tag close
419 tagWriter.setOutputStream(new ZLibOutputStream(tagWriter
420 .getOutputStream()));
421 tagReader
422 .setInputStream(new ZLibInputStream(tagReader.getInputStream()));
423
424 sendStartStream();
425 Log.d(LOGTAG, account.getJid() + ": compression enabled");
426 usingCompression = true;
427 processStream(tagReader.readTag());
428 }
429
430 private void sendStartTLS() throws IOException {
431 Tag startTLS = Tag.empty("starttls");
432 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
433 tagWriter.writeTag(startTLS);
434 }
435
436 private void switchOverToTls(Tag currentTag) throws XmlPullParserException,
437 IOException {
438 tagReader.readTag();
439 try {
440 SSLContext sc = SSLContext.getInstance("TLS");
441 sc.init(null, new X509TrustManager[] { this.mMemorizingTrustManager }, mRandom);
442 SSLSocketFactory factory = sc.getSocketFactory();
443
444 HostnameVerifier verifier = this.mMemorizingTrustManager.wrapHostnameVerifier(new org.apache.http.conn.ssl.StrictHostnameVerifier());
445 SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,
446 socket.getInetAddress().getHostAddress(), socket.getPort(),
447 true);
448
449 if (verifier != null && !verifier.verify(account.getServer(), sslSocket.getSession())) {
450 Log.d(LOGTAG, account.getJid() + ": host mismatch in TLS connection");
451 sslSocket.close();
452 throw new IOException();
453 }
454 tagReader.setInputStream(sslSocket.getInputStream());
455 tagWriter.setOutputStream(sslSocket.getOutputStream());
456 sendStartStream();
457 Log.d(LOGTAG, account.getJid() + ": TLS connection established");
458 processStream(tagReader.readTag());
459 sslSocket.close();
460 } catch (NoSuchAlgorithmException e1) {
461 e1.printStackTrace();
462 } catch (KeyManagementException e) {
463 e.printStackTrace();
464 }
465 }
466
467 private void sendSaslAuthPlain() throws IOException {
468 String saslString = CryptoHelper.saslPlain(account.getUsername(),
469 account.getPassword());
470 Element auth = new Element("auth");
471 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
472 auth.setAttribute("mechanism", "PLAIN");
473 auth.setContent(saslString);
474 tagWriter.writeElement(auth);
475 }
476
477 private void sendSaslAuthDigestMd5() throws IOException {
478 Element auth = new Element("auth");
479 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
480 auth.setAttribute("mechanism", "DIGEST-MD5");
481 tagWriter.writeElement(auth);
482 }
483
484 private void processStreamFeatures(Tag currentTag)
485 throws XmlPullParserException, IOException {
486 this.streamFeatures = tagReader.readElement(currentTag);
487 if (this.streamFeatures.hasChild("starttls")
488 && account.isOptionSet(Account.OPTION_USETLS)) {
489 sendStartTLS();
490 } else if (compressionAvailable()) {
491 sendCompressionZlib();
492 } else if (this.streamFeatures.hasChild("register")
493 && (account.isOptionSet(Account.OPTION_REGISTER))) {
494 sendRegistryRequest();
495 } else if (!this.streamFeatures.hasChild("register")
496 && (account.isOptionSet(Account.OPTION_REGISTER))) {
497 changeStatus(Account.STATUS_REGISTRATION_NOT_SUPPORTED);
498 disconnect(true);
499 } else if (this.streamFeatures.hasChild("mechanisms")
500 && shouldAuthenticate) {
501 List<String> mechanisms = extractMechanisms(streamFeatures
502 .findChild("mechanisms"));
503 if (mechanisms.contains("PLAIN")) {
504 sendSaslAuthPlain();
505 } else if (mechanisms.contains("DIGEST-MD5")) {
506 sendSaslAuthDigestMd5();
507 }
508 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:"
509 + smVersion)
510 && streamId != null) {
511 ResumePacket resume = new ResumePacket(this.streamId,
512 stanzasReceived, smVersion);
513 this.tagWriter.writeStanzaAsync(resume);
514 } else if (this.streamFeatures.hasChild("bind") && shouldBind) {
515 sendBindRequest();
516 }
517 }
518
519 private boolean compressionAvailable() {
520 if (!this.streamFeatures.hasChild("compression",
521 "http://jabber.org/features/compress"))
522 return false;
523 if (!ZLibOutputStream.SUPPORTED)
524 return false;
525 if (!account.isOptionSet(Account.OPTION_USECOMPRESSION))
526 return false;
527
528 Element compression = this.streamFeatures.findChild("compression",
529 "http://jabber.org/features/compress");
530 for (Element child : compression.getChildren()) {
531 if (!"method".equals(child.getName()))
532 continue;
533
534 if ("zlib".equalsIgnoreCase(child.getContent())) {
535 return true;
536 }
537 }
538 return false;
539 }
540
541 private List<String> extractMechanisms(Element stream) {
542 ArrayList<String> mechanisms = new ArrayList<String>(stream
543 .getChildren().size());
544 for (Element child : stream.getChildren()) {
545 mechanisms.add(child.getContent());
546 }
547 return mechanisms;
548 }
549
550 private void sendRegistryRequest() {
551 IqPacket register = new IqPacket(IqPacket.TYPE_GET);
552 register.query("jabber:iq:register");
553 register.setTo(account.getServer());
554 sendIqPacket(register, new OnIqPacketReceived() {
555
556 @Override
557 public void onIqPacketReceived(Account account, IqPacket packet) {
558 Element instructions = packet.query().findChild("instructions");
559 if (packet.query().hasChild("username")
560 && (packet.query().hasChild("password"))) {
561 IqPacket register = new IqPacket(IqPacket.TYPE_SET);
562 Element username = new Element("username")
563 .setContent(account.getUsername());
564 Element password = new Element("password")
565 .setContent(account.getPassword());
566 register.query("jabber:iq:register").addChild(username);
567 register.query().addChild(password);
568 sendIqPacket(register, new OnIqPacketReceived() {
569
570 @Override
571 public void onIqPacketReceived(Account account,
572 IqPacket packet) {
573 if (packet.getType() == IqPacket.TYPE_RESULT) {
574 account.setOption(Account.OPTION_REGISTER,
575 false);
576 changeStatus(Account.STATUS_REGISTRATION_SUCCESSFULL);
577 } else if (packet.hasChild("error")
578 && (packet.findChild("error")
579 .hasChild("conflict"))) {
580 changeStatus(Account.STATUS_REGISTRATION_CONFLICT);
581 } else {
582 changeStatus(Account.STATUS_REGISTRATION_FAILED);
583 Log.d(LOGTAG, packet.toString());
584 }
585 disconnect(true);
586 }
587 });
588 } else {
589 changeStatus(Account.STATUS_REGISTRATION_FAILED);
590 disconnect(true);
591 Log.d(LOGTAG, account.getJid()
592 + ": could not register. instructions are"
593 + instructions.getContent());
594 }
595 }
596 });
597 }
598
599 private void sendBindRequest() throws IOException {
600 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
601 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
602 .addChild("resource").setContent(account.getResource());
603 this.sendUnboundIqPacket(iq, new OnIqPacketReceived() {
604 @Override
605 public void onIqPacketReceived(Account account, IqPacket packet) {
606 Element bind = packet.findChild("bind");
607 if (bind!=null) {
608 Element jid = bind.findChild("jid");
609 if (jid!=null) {
610 account.setResource(jid.getContent().split("/")[1]);
611 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
612 smVersion = 3;
613 EnablePacket enable = new EnablePacket(smVersion);
614 tagWriter.writeStanzaAsync(enable);
615 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
616 smVersion = 2;
617 EnablePacket enable = new EnablePacket(smVersion);
618 tagWriter.writeStanzaAsync(enable);
619 }
620 sendServiceDiscoveryInfo(account.getServer());
621 sendServiceDiscoveryItems(account.getServer());
622 if (bindListener != null) {
623 bindListener.onBind(account);
624 }
625 changeStatus(Account.STATUS_ONLINE);
626 } else {
627 disconnect(true);
628 }
629 } else {
630 disconnect(true);
631 }
632 }
633 });
634 if (this.streamFeatures.hasChild("session")) {
635 Log.d(LOGTAG, account.getJid() + ": sending deprecated session");
636 IqPacket startSession = new IqPacket(IqPacket.TYPE_SET);
637 startSession.addChild("session",
638 "urn:ietf:params:xml:ns:xmpp-session");
639 this.sendUnboundIqPacket(startSession, null);
640 }
641 }
642
643 private void sendServiceDiscoveryInfo(final String server) {
644 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
645 iq.setTo(server);
646 iq.query("http://jabber.org/protocol/disco#info");
647 this.sendIqPacket(iq, new OnIqPacketReceived() {
648
649 @Override
650 public void onIqPacketReceived(Account account, IqPacket packet) {
651 List<Element> elements = packet.query().getChildren();
652 List<String> features = new ArrayList<String>();
653 for (int i = 0; i < elements.size(); ++i) {
654 if (elements.get(i).getName().equals("feature")) {
655 features.add(elements.get(i).getAttribute("var"));
656 }
657 }
658 disco.put(server, features);
659
660 if (account.getServer().equals(server)) {
661 enableAdvancedStreamFeatures();
662 }
663 }
664 });
665 }
666
667 private void enableAdvancedStreamFeatures() {
668 if (getFeatures().carbons()) {
669 sendEnableCarbons();
670 }
671 }
672
673 private void sendServiceDiscoveryItems(final String server) {
674 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
675 iq.setTo(server);
676 iq.query("http://jabber.org/protocol/disco#items");
677 this.sendIqPacket(iq, new OnIqPacketReceived() {
678
679 @Override
680 public void onIqPacketReceived(Account account, IqPacket packet) {
681 List<Element> elements = packet.query().getChildren();
682 for (int i = 0; i < elements.size(); ++i) {
683 if (elements.get(i).getName().equals("item")) {
684 String jid = elements.get(i).getAttribute("jid");
685 sendServiceDiscoveryInfo(jid);
686 }
687 }
688 }
689 });
690 }
691
692 private void sendEnableCarbons() {
693 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
694 iq.addChild("enable", "urn:xmpp:carbons:2");
695 this.sendIqPacket(iq, new OnIqPacketReceived() {
696
697 @Override
698 public void onIqPacketReceived(Account account, IqPacket packet) {
699 if (!packet.hasChild("error")) {
700 Log.d(LOGTAG, account.getJid()
701 + ": successfully enabled carbons");
702 } else {
703 Log.d(LOGTAG, account.getJid()
704 + ": error enableing carbons " + packet.toString());
705 }
706 }
707 });
708 }
709
710 private void processStreamError(Tag currentTag) {
711 Log.d(LOGTAG, "processStreamError");
712 }
713
714 private void sendStartStream() throws IOException {
715 Tag stream = Tag.start("stream:stream");
716 stream.setAttribute("from", account.getJid());
717 stream.setAttribute("to", account.getServer());
718 stream.setAttribute("version", "1.0");
719 stream.setAttribute("xml:lang", "en");
720 stream.setAttribute("xmlns", "jabber:client");
721 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
722 tagWriter.writeTag(stream);
723 }
724
725 private String nextRandomId() {
726 return new BigInteger(50, mRandom).toString(32);
727 }
728
729 public void sendIqPacket(IqPacket packet, OnIqPacketReceived callback) {
730 if (packet.getId() == null) {
731 String id = nextRandomId();
732 packet.setAttribute("id", id);
733 }
734 packet.setFrom(account.getFullJid());
735 this.sendPacket(packet, callback);
736 }
737
738 public void sendUnboundIqPacket(IqPacket packet, OnIqPacketReceived callback) {
739 if (packet.getId() == null) {
740 String id = nextRandomId();
741 packet.setAttribute("id", id);
742 }
743 this.sendPacket(packet, callback);
744 }
745
746 public void sendMessagePacket(MessagePacket packet) {
747 this.sendPacket(packet, null);
748 }
749
750 public void sendPresencePacket(PresencePacket packet) {
751 this.sendPacket(packet, null);
752 }
753
754 private synchronized void sendPacket(final AbstractStanza packet,
755 PacketReceived callback) {
756 // TODO dont increment stanza count if packet = request packet or ack;
757 ++stanzasSent;
758 tagWriter.writeStanzaAsync(packet);
759 if (callback != null) {
760 if (packet.getId() == null) {
761 packet.setId(nextRandomId());
762 }
763 packetCallbacks.put(packet.getId(), callback);
764 }
765 }
766
767 public void sendPing() {
768 if (streamFeatures.hasChild("sm")) {
769 tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
770 } else {
771 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
772 iq.setFrom(account.getFullJid());
773 iq.addChild("ping", "urn:xmpp:ping");
774 this.sendIqPacket(iq, null);
775 }
776 this.lastPingSent = SystemClock.elapsedRealtime();
777 }
778
779 public void setOnMessagePacketReceivedListener(
780 OnMessagePacketReceived listener) {
781 this.messageListener = listener;
782 }
783
784 public void setOnUnregisteredIqPacketReceivedListener(
785 OnIqPacketReceived listener) {
786 this.unregisteredIqListener = listener;
787 }
788
789 public void setOnPresencePacketReceivedListener(
790 OnPresencePacketReceived listener) {
791 this.presenceListener = listener;
792 }
793
794 public void setOnJinglePacketReceivedListener(
795 OnJinglePacketReceived listener) {
796 this.jingleListener = listener;
797 }
798
799 public void setOnStatusChangedListener(OnStatusChanged listener) {
800 this.statusListener = listener;
801 }
802
803 public void setOnBindListener(OnBindListener listener) {
804 this.bindListener = listener;
805 }
806
807 public void disconnect(boolean force) {
808 changeStatus(Account.STATUS_OFFLINE);
809 Log.d(LOGTAG, "disconnecting");
810 try {
811 if (force) {
812 socket.close();
813 return;
814 }
815 new Thread(new Runnable() {
816
817 @Override
818 public void run() {
819 if (tagWriter.isActive()) {
820 tagWriter.finish();
821 try {
822 while (!tagWriter.finished()) {
823 Log.d(LOGTAG, "not yet finished");
824 Thread.sleep(100);
825 }
826 tagWriter.writeTag(Tag.end("stream:stream"));
827 } catch (IOException e) {
828 Log.d(LOGTAG, "io exception during disconnect");
829 } catch (InterruptedException e) {
830 Log.d(LOGTAG, "interrupted");
831 }
832 }
833 }
834 }).start();
835 } catch (IOException e) {
836 Log.d(LOGTAG, "io exception during disconnect");
837 }
838 }
839
840 public List<String> findDiscoItemsByFeature(String feature) {
841 List<String> items = new ArrayList<String>();
842 for (Entry<String, List<String>> cursor : disco.entrySet()) {
843 if (cursor.getValue().contains(feature)) {
844 items.add(cursor.getKey());
845 }
846 }
847 return items;
848 }
849
850 public String findDiscoItemByFeature(String feature) {
851 List<String> items = findDiscoItemsByFeature(feature);
852 if (items.size()>=1) {
853 return items.get(0);
854 }
855 return null;
856 }
857
858 public void r() {
859 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
860 }
861
862 public String getMucServer() {
863 return findDiscoItemByFeature("http://jabber.org/protocol/muc");
864 }
865
866 public int getTimeToNextAttempt() {
867 int interval = (int) (25 * Math.pow(1.5, attempt));
868 int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
869 return interval - secondsSinceLast;
870 }
871
872 public int getAttempt() {
873 return this.attempt;
874 }
875
876 public Features getFeatures() {
877 return this.features;
878 }
879
880 public class Features {
881 XmppConnection connection;
882 public Features(XmppConnection connection) {
883 this.connection = connection;
884 }
885
886 private boolean hasDiscoFeature(String server, String feature) {
887 if (!connection.disco.containsKey(server)) {
888 return false;
889 }
890 return connection.disco.get(server).contains(feature);
891 }
892
893 public boolean carbons() {
894 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
895 }
896
897 public boolean sm() {
898 if (connection.streamFeatures == null) {
899 return false;
900 } else {
901 return connection.streamFeatures.hasChild("sm");
902 }
903 }
904
905 public boolean csi() {
906 if (connection.streamFeatures == null) {
907 return false;
908 } else {
909 return connection.streamFeatures.hasChild("csi","urn:xmpp:csi:0");
910 }
911 }
912
913 public boolean pubsub() {
914 return hasDiscoFeature(account.getServer(), "http://jabber.org/protocol/pubsub#publish");
915 }
916
917 public boolean rosterVersioning() {
918 if (connection.streamFeatures == null) {
919 return false;
920 } else {
921 return connection.streamFeatures.hasChild("ver");
922 }
923 }
924
925 public boolean streamhost() {
926 return connection.findDiscoItemByFeature("http://jabber.org/protocol/bytestreams") != null;
927 }
928
929 public boolean compression() {
930 return connection.usingCompression;
931 }
932 }
933
934 public long getLastSessionEstablished() {
935 long diff;
936 if (this.lastSessionStarted == 0) {
937 diff = SystemClock.elapsedRealtime() - this.lastConnect;
938 } else {
939 diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
940 }
941 return System.currentTimeMillis() - diff;
942 }
943
944 public long getLastConnect() {
945 return this.lastConnect;
946 }
947
948 public long getLastPingSent() {
949 return this.lastPingSent;
950 }
951
952 public long getLastPacketReceived() {
953 return this.lastPaketReceived;
954 }
955
956 public void sendActive() {
957 this.sendPacket(new ActivePacket(), null);
958 }
959
960 public void sendInactive() {
961 this.sendPacket(new InactivePacket(), null);
962 }
963}