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.KeyStore;
11import java.security.KeyStoreException;
12import java.security.MessageDigest;
13import java.security.NoSuchAlgorithmException;
14import java.security.SecureRandom;
15import java.security.cert.CertPathValidatorException;
16import java.security.cert.CertificateException;
17import java.security.cert.X509Certificate;
18import java.util.ArrayList;
19import java.util.HashMap;
20import java.util.Hashtable;
21import java.util.Iterator;
22import java.util.List;
23import java.util.Map.Entry;
24
25import javax.net.ssl.SSLContext;
26import javax.net.ssl.SSLSocket;
27import javax.net.ssl.SSLSocketFactory;
28import javax.net.ssl.TrustManager;
29import javax.net.ssl.TrustManagerFactory;
30import javax.net.ssl.X509TrustManager;
31
32import org.xmlpull.v1.XmlPullParserException;
33
34import android.os.Bundle;
35import android.os.PowerManager;
36import android.os.PowerManager.WakeLock;
37import android.os.SystemClock;
38import android.util.Log;
39import eu.siacs.conversations.entities.Account;
40import eu.siacs.conversations.utils.CryptoHelper;
41import eu.siacs.conversations.utils.DNSHelper;
42import eu.siacs.conversations.utils.zlib.ZLibOutputStream;
43import eu.siacs.conversations.utils.zlib.ZLibInputStream;
44import eu.siacs.conversations.xml.Element;
45import eu.siacs.conversations.xml.Tag;
46import eu.siacs.conversations.xml.TagWriter;
47import eu.siacs.conversations.xml.XmlReader;
48import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
49import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
50import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
51import eu.siacs.conversations.xmpp.stanzas.IqPacket;
52import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
53import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
54import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
55import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
56import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
57import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
58
59public class XmppConnection implements Runnable {
60
61 protected Account account;
62 private static final String LOGTAG = "xmppService";
63
64 private WakeLock wakeLock;
65
66 private SecureRandom random = new SecureRandom();
67
68 private Socket socket;
69 private XmlReader tagReader;
70 private TagWriter tagWriter;
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 int stanzasReceived = 0;
81 private int stanzasSent = 0;
82
83 public long lastPaketReceived = 0;
84 public long lastPingSent = 0;
85 public long lastConnect = 0;
86 public long lastSessionStarted = 0;
87
88 private int attempt = 0;
89
90 private static final int PACKET_IQ = 0;
91 private static final int PACKET_MESSAGE = 1;
92 private static final int PACKET_PRESENCE = 2;
93
94 private Hashtable<String, PacketReceived> packetCallbacks = new Hashtable<String, PacketReceived>();
95 private OnPresencePacketReceived presenceListener = null;
96 private OnJinglePacketReceived jingleListener = null;
97 private OnIqPacketReceived unregisteredIqListener = null;
98 private OnMessagePacketReceived messageListener = null;
99 private OnStatusChanged statusListener = null;
100 private OnTLSExceptionReceived tlsListener = null;
101 private OnBindListener bindListener = null;
102
103 public XmppConnection(Account account, PowerManager pm) {
104 this.account = account;
105 this.wakeLock = pm.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 wakeLock.release();
185 }
186 return;
187 } catch (IOException e) {
188 if (account.getStatus() != Account.STATUS_TLS_ERROR) {
189 this.changeStatus(Account.STATUS_OFFLINE);
190 }
191 if (wakeLock.isHeld()) {
192 wakeLock.release();
193 }
194 return;
195 } catch (NoSuchAlgorithmException e) {
196 this.changeStatus(Account.STATUS_OFFLINE);
197 Log.d(LOGTAG, "compression exception " + e.getMessage());
198 if (wakeLock.isHeld()) {
199 wakeLock.release();
200 }
201 return;
202 } catch (XmlPullParserException e) {
203 this.changeStatus(Account.STATUS_OFFLINE);
204 Log.d(LOGTAG, "xml exception " + e.getMessage());
205 if (wakeLock.isHeld()) {
206 wakeLock.release();
207 }
208 return;
209 }
210
211 }
212
213 @Override
214 public void run() {
215 connect();
216 }
217
218 private void processStream(Tag currentTag) throws XmlPullParserException,
219 IOException, NoSuchAlgorithmException {
220 Tag nextTag = tagReader.readTag();
221 while ((nextTag != null) && (!nextTag.isEnd("stream"))) {
222 if (nextTag.isStart("error")) {
223 processStreamError(nextTag);
224 } else if (nextTag.isStart("features")) {
225 processStreamFeatures(nextTag);
226 if ((streamFeatures.getChildren().size() == 1)
227 && (streamFeatures.hasChild("starttls"))
228 && (!account.isOptionSet(Account.OPTION_USETLS))) {
229 changeStatus(Account.STATUS_SERVER_REQUIRES_TLS);
230 }
231 } else if (nextTag.isStart("proceed")) {
232 switchOverToTls(nextTag);
233 } else if (nextTag.isStart("compressed")) {
234 switchOverToZLib(nextTag);
235 } else if (nextTag.isStart("success")) {
236 Log.d(LOGTAG, account.getJid() + ": logged in");
237 tagReader.readTag();
238 tagReader.reset();
239 sendStartStream();
240 processStream(tagReader.readTag());
241 break;
242 } else if (nextTag.isStart("failure")) {
243 tagReader.readElement(nextTag);
244 changeStatus(Account.STATUS_UNAUTHORIZED);
245 } else if (nextTag.isStart("challenge")) {
246 String challange = tagReader.readElement(nextTag).getContent();
247 Element response = new Element("response");
248 response.setAttribute("xmlns",
249 "urn:ietf:params:xml:ns:xmpp-sasl");
250 response.setContent(CryptoHelper.saslDigestMd5(account,
251 challange));
252 tagWriter.writeElement(response);
253 } else if (nextTag.isStart("enabled")) {
254 this.stanzasSent = 0;
255 Element enabled = tagReader.readElement(nextTag);
256 if ("true".equals(enabled.getAttribute("resume"))) {
257 this.streamId = enabled.getAttribute("id");
258 Log.d(LOGTAG, account.getJid() + ": stream managment("
259 + smVersion + ") enabled (resumable)");
260 } else {
261 Log.d(LOGTAG, account.getJid() + ": stream managment("
262 + smVersion + ") enabled");
263 }
264 this.lastSessionStarted = SystemClock.elapsedRealtime();
265 this.stanzasReceived = 0;
266 RequestPacket r = new RequestPacket(smVersion);
267 tagWriter.writeStanzaAsync(r);
268 } else if (nextTag.isStart("resumed")) {
269 lastPaketReceived = SystemClock.elapsedRealtime();
270 Log.d(LOGTAG, account.getJid() + ": session resumed");
271 tagReader.readElement(nextTag);
272 sendPing();
273 changeStatus(Account.STATUS_ONLINE);
274 } else if (nextTag.isStart("r")) {
275 tagReader.readElement(nextTag);
276 AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
277 // Log.d(LOGTAG,ack.toString());
278 tagWriter.writeStanzaAsync(ack);
279 } else if (nextTag.isStart("a")) {
280 Element ack = tagReader.readElement(nextTag);
281 lastPaketReceived = SystemClock.elapsedRealtime();
282 int serverSequence = Integer.parseInt(ack.getAttribute("h"));
283 if (serverSequence > this.stanzasSent) {
284 this.stanzasSent = serverSequence;
285 }
286 // Log.d(LOGTAG,"server ack"+ack.toString()+" ("+this.stanzasSent+")");
287 } else if (nextTag.isStart("failed")) {
288 tagReader.readElement(nextTag);
289 Log.d(LOGTAG, account.getJid() + ": resumption failed");
290 streamId = null;
291 if (account.getStatus() != Account.STATUS_ONLINE) {
292 sendBindRequest();
293 }
294 } else if (nextTag.isStart("iq")) {
295 processIq(nextTag);
296 } else if (nextTag.isStart("message")) {
297 processMessage(nextTag);
298 } else if (nextTag.isStart("presence")) {
299 processPresence(nextTag);
300 } else {
301 Log.d(LOGTAG, "found unexpected tag: " + nextTag.getName()
302 + " as child of " + currentTag.getName());
303 }
304 nextTag = tagReader.readTag();
305 }
306 if (account.getStatus() == Account.STATUS_ONLINE) {
307 account.setStatus(Account.STATUS_OFFLINE);
308 if (statusListener != null) {
309 statusListener.onStatusChanged(account);
310 }
311 }
312 }
313
314 private Element processPacket(Tag currentTag, int packetType)
315 throws XmlPullParserException, IOException {
316 Element element;
317 switch (packetType) {
318 case PACKET_IQ:
319 element = new IqPacket();
320 break;
321 case PACKET_MESSAGE:
322 element = new MessagePacket();
323 break;
324 case PACKET_PRESENCE:
325 element = new PresencePacket();
326 break;
327 default:
328 return null;
329 }
330 element.setAttributes(currentTag.getAttributes());
331 Tag nextTag = tagReader.readTag();
332 if (nextTag==null) {
333 throw new IOException("interrupted mid tag");
334 }
335 while (!nextTag.isEnd(element.getName())) {
336 if (!nextTag.isNo()) {
337 Element child = tagReader.readElement(nextTag);
338 if ((packetType == PACKET_IQ)
339 && ("jingle".equals(child.getName()))) {
340 element = new JinglePacket();
341 element.setAttributes(currentTag.getAttributes());
342 }
343 element.addChild(child);
344 }
345 nextTag = tagReader.readTag();
346 if (nextTag==null) {
347 throw new IOException("interrupted mid tag");
348 }
349 }
350 ++stanzasReceived;
351 lastPaketReceived = SystemClock.elapsedRealtime();
352 return element;
353 }
354
355 private void processIq(Tag currentTag) throws XmlPullParserException,
356 IOException {
357 IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
358
359 if (packet.getId() == null) {
360 return; // an iq packet without id is definitely invalid
361 }
362
363 if (packet instanceof JinglePacket) {
364 if (this.jingleListener != null) {
365 this.jingleListener.onJinglePacketReceived(account,
366 (JinglePacket) packet);
367 }
368 } else {
369 if (packetCallbacks.containsKey(packet.getId())) {
370 if (packetCallbacks.get(packet.getId()) instanceof OnIqPacketReceived) {
371 ((OnIqPacketReceived) packetCallbacks.get(packet.getId()))
372 .onIqPacketReceived(account, packet);
373 }
374
375 packetCallbacks.remove(packet.getId());
376 } else if (this.unregisteredIqListener != null) {
377 this.unregisteredIqListener.onIqPacketReceived(account, packet);
378 }
379 }
380 }
381
382 private void processMessage(Tag currentTag) throws XmlPullParserException,
383 IOException {
384 MessagePacket packet = (MessagePacket) processPacket(currentTag,
385 PACKET_MESSAGE);
386 String id = packet.getAttribute("id");
387 if ((id != null) && (packetCallbacks.containsKey(id))) {
388 if (packetCallbacks.get(id) instanceof OnMessagePacketReceived) {
389 ((OnMessagePacketReceived) packetCallbacks.get(id))
390 .onMessagePacketReceived(account, packet);
391 }
392 packetCallbacks.remove(id);
393 } else if (this.messageListener != null) {
394 this.messageListener.onMessagePacketReceived(account, packet);
395 }
396 }
397
398 private void processPresence(Tag currentTag) throws XmlPullParserException,
399 IOException {
400 PresencePacket packet = (PresencePacket) processPacket(currentTag,
401 PACKET_PRESENCE);
402 String id = packet.getAttribute("id");
403 if ((id != null) && (packetCallbacks.containsKey(id))) {
404 if (packetCallbacks.get(id) instanceof OnPresencePacketReceived) {
405 ((OnPresencePacketReceived) packetCallbacks.get(id))
406 .onPresencePacketReceived(account, packet);
407 }
408 packetCallbacks.remove(id);
409 } else if (this.presenceListener != null) {
410 this.presenceListener.onPresencePacketReceived(account, packet);
411 }
412 }
413
414 private void sendCompressionZlib() throws IOException {
415 Element compress = new Element("compress");
416 compress.setAttribute("xmlns", "http://jabber.org/protocol/compress");
417 compress.addChild("method").setContent("zlib");
418 tagWriter.writeElement(compress);
419 }
420
421 private void switchOverToZLib(Tag currentTag)
422 throws XmlPullParserException, IOException,
423 NoSuchAlgorithmException {
424 tagReader.readTag(); // read tag close
425
426 tagWriter.setOutputStream(new ZLibOutputStream(tagWriter
427 .getOutputStream()));
428 tagReader
429 .setInputStream(new ZLibInputStream(tagReader.getInputStream()));
430
431 sendStartStream();
432 Log.d(LOGTAG, account.getJid() + ": compression enabled");
433 processStream(tagReader.readTag());
434 }
435
436 private void sendStartTLS() throws IOException {
437 Tag startTLS = Tag.empty("starttls");
438 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
439 tagWriter.writeTag(startTLS);
440 }
441
442 private void switchOverToTls(Tag currentTag) throws XmlPullParserException,
443 IOException {
444 tagReader.readTag();
445 try {
446 SSLContext sc = SSLContext.getInstance("TLS");
447 TrustManagerFactory tmf = TrustManagerFactory
448 .getInstance(TrustManagerFactory.getDefaultAlgorithm());
449 try {
450 tmf.init((KeyStore) null);
451 } catch (KeyStoreException e1) {
452 e1.printStackTrace();
453 }
454
455 TrustManager[] trustManagers = tmf.getTrustManagers();
456 final X509TrustManager origTrustmanager = (X509TrustManager) trustManagers[0];
457
458 TrustManager[] wrappedTrustManagers = new TrustManager[] { new X509TrustManager() {
459
460 @Override
461 public void checkClientTrusted(X509Certificate[] chain,
462 String authType) throws CertificateException {
463 origTrustmanager.checkClientTrusted(chain, authType);
464 }
465
466 @Override
467 public void checkServerTrusted(X509Certificate[] chain,
468 String authType) throws CertificateException {
469 try {
470 origTrustmanager.checkServerTrusted(chain, authType);
471 } catch (CertificateException e) {
472 if (e.getCause() instanceof CertPathValidatorException) {
473 String sha;
474 try {
475 MessageDigest sha1 = MessageDigest
476 .getInstance("SHA1");
477 sha1.update(chain[0].getEncoded());
478 sha = CryptoHelper.bytesToHex(sha1.digest());
479 if (!sha.equals(account.getSSLFingerprint())) {
480 changeStatus(Account.STATUS_TLS_ERROR);
481 if (tlsListener != null) {
482 tlsListener.onTLSExceptionReceived(sha,
483 account);
484 }
485 throw new CertificateException();
486 }
487 } catch (NoSuchAlgorithmException e1) {
488 // TODO Auto-generated catch block
489 e1.printStackTrace();
490 }
491 } else {
492 throw new CertificateException();
493 }
494 }
495 }
496
497 @Override
498 public X509Certificate[] getAcceptedIssuers() {
499 return origTrustmanager.getAcceptedIssuers();
500 }
501
502 } };
503 sc.init(null, wrappedTrustManagers, null);
504 SSLSocketFactory factory = sc.getSocketFactory();
505 SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,
506 socket.getInetAddress().getHostAddress(), socket.getPort(),
507 true);
508 tagReader.setInputStream(sslSocket.getInputStream());
509 tagWriter.setOutputStream(sslSocket.getOutputStream());
510 sendStartStream();
511 Log.d(LOGTAG, account.getJid() + ": TLS connection established");
512 processStream(tagReader.readTag());
513 sslSocket.close();
514 } catch (NoSuchAlgorithmException e1) {
515 // TODO Auto-generated catch block
516 e1.printStackTrace();
517 } catch (KeyManagementException e) {
518 // TODO Auto-generated catch block
519 e.printStackTrace();
520 }
521 }
522
523 private void sendSaslAuthPlain() throws IOException {
524 String saslString = CryptoHelper.saslPlain(account.getUsername(),
525 account.getPassword());
526 Element auth = new Element("auth");
527 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
528 auth.setAttribute("mechanism", "PLAIN");
529 auth.setContent(saslString);
530 tagWriter.writeElement(auth);
531 }
532
533 private void sendSaslAuthDigestMd5() throws IOException {
534 Element auth = new Element("auth");
535 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
536 auth.setAttribute("mechanism", "DIGEST-MD5");
537 tagWriter.writeElement(auth);
538 }
539
540 private void processStreamFeatures(Tag currentTag)
541 throws XmlPullParserException, IOException {
542 this.streamFeatures = tagReader.readElement(currentTag);
543 if (this.streamFeatures.hasChild("starttls")
544 && account.isOptionSet(Account.OPTION_USETLS)) {
545 sendStartTLS();
546 } else if (compressionAvailable()) {
547 sendCompressionZlib();
548 } else if (this.streamFeatures.hasChild("register")
549 && (account.isOptionSet(Account.OPTION_REGISTER))) {
550 sendRegistryRequest();
551 } else if (!this.streamFeatures.hasChild("register")
552 && (account.isOptionSet(Account.OPTION_REGISTER))) {
553 changeStatus(Account.STATUS_REGISTRATION_NOT_SUPPORTED);
554 disconnect(true);
555 } else if (this.streamFeatures.hasChild("mechanisms")
556 && shouldAuthenticate) {
557 List<String> mechanisms = extractMechanisms(streamFeatures
558 .findChild("mechanisms"));
559 if (mechanisms.contains("PLAIN")) {
560 sendSaslAuthPlain();
561 } else if (mechanisms.contains("DIGEST-MD5")) {
562 sendSaslAuthDigestMd5();
563 }
564 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:"
565 + smVersion)
566 && streamId != null) {
567 ResumePacket resume = new ResumePacket(this.streamId,
568 stanzasReceived, smVersion);
569 this.tagWriter.writeStanzaAsync(resume);
570 } else if (this.streamFeatures.hasChild("bind") && shouldBind) {
571 sendBindRequest();
572 }
573 }
574
575 private boolean compressionAvailable() {
576 if (!this.streamFeatures.hasChild("compression",
577 "http://jabber.org/features/compress"))
578 return false;
579 if (!ZLibOutputStream.SUPPORTED)
580 return false;
581 if (!account.isOptionSet(Account.OPTION_USECOMPRESSION))
582 return false;
583
584 Element compression = this.streamFeatures.findChild("compression",
585 "http://jabber.org/features/compress");
586 for (Element child : compression.getChildren()) {
587 if (!"method".equals(child.getName()))
588 continue;
589
590 if ("zlib".equalsIgnoreCase(child.getContent())) {
591 return true;
592 }
593 }
594 return false;
595 }
596
597 private List<String> extractMechanisms(Element stream) {
598 ArrayList<String> mechanisms = new ArrayList<String>(stream
599 .getChildren().size());
600 for (Element child : stream.getChildren()) {
601 mechanisms.add(child.getContent());
602 }
603 return mechanisms;
604 }
605
606 private void sendRegistryRequest() {
607 IqPacket register = new IqPacket(IqPacket.TYPE_GET);
608 register.query("jabber:iq:register");
609 register.setTo(account.getServer());
610 sendIqPacket(register, new OnIqPacketReceived() {
611
612 @Override
613 public void onIqPacketReceived(Account account, IqPacket packet) {
614 Element instructions = packet.query().findChild("instructions");
615 if (packet.query().hasChild("username")
616 && (packet.query().hasChild("password"))) {
617 IqPacket register = new IqPacket(IqPacket.TYPE_SET);
618 Element username = new Element("username")
619 .setContent(account.getUsername());
620 Element password = new Element("password")
621 .setContent(account.getPassword());
622 register.query("jabber:iq:register").addChild(username);
623 register.query().addChild(password);
624 sendIqPacket(register, new OnIqPacketReceived() {
625
626 @Override
627 public void onIqPacketReceived(Account account,
628 IqPacket packet) {
629 if (packet.getType() == IqPacket.TYPE_RESULT) {
630 account.setOption(Account.OPTION_REGISTER,
631 false);
632 changeStatus(Account.STATUS_REGISTRATION_SUCCESSFULL);
633 } else if (packet.hasChild("error")
634 && (packet.findChild("error")
635 .hasChild("conflict"))) {
636 changeStatus(Account.STATUS_REGISTRATION_CONFLICT);
637 } else {
638 changeStatus(Account.STATUS_REGISTRATION_FAILED);
639 Log.d(LOGTAG, packet.toString());
640 }
641 disconnect(true);
642 }
643 });
644 } else {
645 changeStatus(Account.STATUS_REGISTRATION_FAILED);
646 disconnect(true);
647 Log.d(LOGTAG, account.getJid()
648 + ": could not register. instructions are"
649 + instructions.getContent());
650 }
651 }
652 });
653 }
654
655 private void sendBindRequest() throws IOException {
656 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
657 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
658 .addChild("resource").setContent(account.getResource());
659 this.sendUnboundIqPacket(iq, new OnIqPacketReceived() {
660 @Override
661 public void onIqPacketReceived(Account account, IqPacket packet) {
662 String resource = packet.findChild("bind").findChild("jid")
663 .getContent().split("/")[1];
664 account.setResource(resource);
665 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
666 smVersion = 3;
667 EnablePacket enable = new EnablePacket(smVersion);
668 tagWriter.writeStanzaAsync(enable);
669 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
670 smVersion = 2;
671 EnablePacket enable = new EnablePacket(smVersion);
672 tagWriter.writeStanzaAsync(enable);
673 }
674 sendServiceDiscoveryInfo(account.getServer());
675 sendServiceDiscoveryItems(account.getServer());
676 if (bindListener != null) {
677 bindListener.onBind(account);
678 }
679
680 changeStatus(Account.STATUS_ONLINE);
681 }
682 });
683 if (this.streamFeatures.hasChild("session")) {
684 Log.d(LOGTAG, account.getJid() + ": sending deprecated session");
685 IqPacket startSession = new IqPacket(IqPacket.TYPE_SET);
686 startSession.addChild("session",
687 "urn:ietf:params:xml:ns:xmpp-session");
688 this.sendUnboundIqPacket(startSession, null);
689 }
690 }
691
692 private void sendServiceDiscoveryInfo(final String server) {
693 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
694 iq.setTo(server);
695 iq.query("http://jabber.org/protocol/disco#info");
696 this.sendIqPacket(iq, new OnIqPacketReceived() {
697
698 @Override
699 public void onIqPacketReceived(Account account, IqPacket packet) {
700 List<Element> elements = packet.query().getChildren();
701 List<String> features = new ArrayList<String>();
702 for (int i = 0; i < elements.size(); ++i) {
703 if (elements.get(i).getName().equals("feature")) {
704 features.add(elements.get(i).getAttribute("var"));
705 }
706 }
707 disco.put(server, features);
708
709 if (account.getServer().equals(server)) {
710 enableAdvancedStreamFeatures();
711 }
712 }
713 });
714 }
715
716 private void enableAdvancedStreamFeatures() {
717 if (hasFeaturesCarbon()) {
718 sendEnableCarbons();
719 }
720 }
721
722 private void sendServiceDiscoveryItems(final String server) {
723 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
724 iq.setTo(server);
725 iq.query("http://jabber.org/protocol/disco#items");
726 this.sendIqPacket(iq, new OnIqPacketReceived() {
727
728 @Override
729 public void onIqPacketReceived(Account account, IqPacket packet) {
730 List<Element> elements = packet.query().getChildren();
731 for (int i = 0; i < elements.size(); ++i) {
732 if (elements.get(i).getName().equals("item")) {
733 String jid = elements.get(i).getAttribute("jid");
734 sendServiceDiscoveryInfo(jid);
735 }
736 }
737 }
738 });
739 }
740
741 private void sendEnableCarbons() {
742 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
743 iq.addChild("enable", "urn:xmpp:carbons:2");
744 this.sendIqPacket(iq, new OnIqPacketReceived() {
745
746 @Override
747 public void onIqPacketReceived(Account account, IqPacket packet) {
748 if (!packet.hasChild("error")) {
749 Log.d(LOGTAG, account.getJid()
750 + ": successfully enabled carbons");
751 } else {
752 Log.d(LOGTAG, account.getJid()
753 + ": error enableing carbons " + packet.toString());
754 }
755 }
756 });
757 }
758
759 private void processStreamError(Tag currentTag) {
760 Log.d(LOGTAG, "processStreamError");
761 }
762
763 private void sendStartStream() throws IOException {
764 Tag stream = Tag.start("stream:stream");
765 stream.setAttribute("from", account.getJid());
766 stream.setAttribute("to", account.getServer());
767 stream.setAttribute("version", "1.0");
768 stream.setAttribute("xml:lang", "en");
769 stream.setAttribute("xmlns", "jabber:client");
770 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
771 tagWriter.writeTag(stream);
772 }
773
774 private String nextRandomId() {
775 return new BigInteger(50, random).toString(32);
776 }
777
778 public void sendIqPacket(IqPacket packet, OnIqPacketReceived callback) {
779 if (packet.getId() == null) {
780 String id = nextRandomId();
781 packet.setAttribute("id", id);
782 }
783 packet.setFrom(account.getFullJid());
784 this.sendPacket(packet, callback);
785 }
786
787 public void sendUnboundIqPacket(IqPacket packet, OnIqPacketReceived callback) {
788 if (packet.getId() == null) {
789 String id = nextRandomId();
790 packet.setAttribute("id", id);
791 }
792 this.sendPacket(packet, callback);
793 }
794
795 public void sendMessagePacket(MessagePacket packet) {
796 this.sendPacket(packet, null);
797 }
798
799 public void sendMessagePacket(MessagePacket packet,
800 OnMessagePacketReceived callback) {
801 this.sendPacket(packet, callback);
802 }
803
804 public void sendPresencePacket(PresencePacket packet) {
805 this.sendPacket(packet, null);
806 }
807
808 public void sendPresencePacket(PresencePacket packet,
809 OnPresencePacketReceived callback) {
810 this.sendPacket(packet, callback);
811 }
812
813 private synchronized void sendPacket(final AbstractStanza packet,
814 PacketReceived callback) {
815 // TODO dont increment stanza count if packet = request packet or ack;
816 ++stanzasSent;
817 tagWriter.writeStanzaAsync(packet);
818 if (callback != null) {
819 if (packet.getId() == null) {
820 packet.setId(nextRandomId());
821 }
822 packetCallbacks.put(packet.getId(), callback);
823 }
824 }
825
826 public void sendPing() {
827 if (streamFeatures.hasChild("sm")) {
828 tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
829 } else {
830 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
831 iq.setFrom(account.getFullJid());
832 iq.addChild("ping", "urn:xmpp:ping");
833 this.sendIqPacket(iq, null);
834 }
835 }
836
837 public void setOnMessagePacketReceivedListener(
838 OnMessagePacketReceived listener) {
839 this.messageListener = listener;
840 }
841
842 public void setOnUnregisteredIqPacketReceivedListener(
843 OnIqPacketReceived listener) {
844 this.unregisteredIqListener = listener;
845 }
846
847 public void setOnPresencePacketReceivedListener(
848 OnPresencePacketReceived listener) {
849 this.presenceListener = listener;
850 }
851
852 public void setOnJinglePacketReceivedListener(
853 OnJinglePacketReceived listener) {
854 this.jingleListener = listener;
855 }
856
857 public void setOnStatusChangedListener(OnStatusChanged listener) {
858 this.statusListener = listener;
859 }
860
861 public void setOnTLSExceptionReceivedListener(
862 OnTLSExceptionReceived listener) {
863 this.tlsListener = listener;
864 }
865
866 public void setOnBindListener(OnBindListener listener) {
867 this.bindListener = listener;
868 }
869
870 public void disconnect(boolean force) {
871 changeStatus(Account.STATUS_OFFLINE);
872 Log.d(LOGTAG, "disconnecting");
873 try {
874 if (force) {
875 socket.close();
876 return;
877 }
878 new Thread(new Runnable() {
879
880 @Override
881 public void run() {
882 if (tagWriter.isActive()) {
883 tagWriter.finish();
884 try {
885 while (!tagWriter.finished()) {
886 Log.d(LOGTAG, "not yet finished");
887 Thread.sleep(100);
888 }
889 tagWriter.writeTag(Tag.end("stream:stream"));
890 } catch (IOException e) {
891 Log.d(LOGTAG, "io exception during disconnect");
892 } catch (InterruptedException e) {
893 Log.d(LOGTAG, "interrupted");
894 }
895 }
896 }
897 }).start();
898 } catch (IOException e) {
899 Log.d(LOGTAG, "io exception during disconnect");
900 }
901 }
902
903 public boolean hasFeatureRosterManagment() {
904 if (this.streamFeatures == null) {
905 return false;
906 } else {
907 return this.streamFeatures.hasChild("ver");
908 }
909 }
910
911 public boolean hasFeatureStreamManagment() {
912 if (this.streamFeatures == null) {
913 return false;
914 } else {
915 return this.streamFeatures.hasChild("sm");
916 }
917 }
918
919 public boolean hasFeaturesCarbon() {
920 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
921 }
922
923 public boolean hasDiscoFeature(String server, String feature) {
924 if (!disco.containsKey(server)) {
925 return false;
926 }
927 return disco.get(server).contains(feature);
928 }
929
930 public String findDiscoItemByFeature(String feature) {
931 Iterator<Entry<String, List<String>>> it = this.disco.entrySet()
932 .iterator();
933 while (it.hasNext()) {
934 Entry<String, List<String>> pairs = it.next();
935 if (pairs.getValue().contains(feature)&&pairs.getValue().size()==1) {
936 return pairs.getKey();
937 }
938 it.remove();
939 }
940 return null;
941 }
942
943 public void r() {
944 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
945 }
946
947 public int getReceivedStanzas() {
948 return this.stanzasReceived;
949 }
950
951 public int getSentStanzas() {
952 return this.stanzasSent;
953 }
954
955 public String getMucServer() {
956 return findDiscoItemByFeature("http://jabber.org/protocol/muc");
957 }
958
959 public int getTimeToNextAttempt() {
960 int interval = (int) (25 * Math.pow(1.5, attempt));
961 int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
962 return interval - secondsSinceLast;
963 }
964
965 public int getAttempt() {
966 return this.attempt;
967 }
968}