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