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.HashSet;
21import java.util.Hashtable;
22import java.util.Iterator;
23import java.util.List;
24import java.util.Map.Entry;
25
26import javax.net.ssl.SSLContext;
27import javax.net.ssl.SSLSocket;
28import javax.net.ssl.SSLSocketFactory;
29import javax.net.ssl.TrustManager;
30import javax.net.ssl.TrustManagerFactory;
31import javax.net.ssl.X509TrustManager;
32
33import org.xmlpull.v1.XmlPullParserException;
34
35import android.os.Bundle;
36import android.os.PowerManager;
37import android.os.PowerManager.WakeLock;
38import android.os.SystemClock;
39import android.util.Log;
40import eu.siacs.conversations.entities.Account;
41import eu.siacs.conversations.utils.CryptoHelper;
42import eu.siacs.conversations.utils.DNSHelper;
43import eu.siacs.conversations.utils.zlib.ZLibOutputStream;
44import eu.siacs.conversations.utils.zlib.ZLibInputStream;
45import eu.siacs.conversations.xml.Element;
46import eu.siacs.conversations.xml.Tag;
47import eu.siacs.conversations.xml.TagWriter;
48import eu.siacs.conversations.xml.XmlReader;
49import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
50import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
51import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
52import eu.siacs.conversations.xmpp.stanzas.IqPacket;
53import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
54import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
55import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
56import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
57import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
58import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
59
60public class XmppConnection implements Runnable {
61
62 protected Account account;
63 private static final String LOGTAG = "xmppService";
64
65 private WakeLock wakeLock;
66
67 private SecureRandom random = new SecureRandom();
68
69 private Socket socket;
70 private XmlReader tagReader;
71 private TagWriter tagWriter;
72
73 private boolean shouldBind = true;
74 private boolean shouldAuthenticate = true;
75 private Element streamFeatures;
76 private HashMap<String, List<String>> disco = new HashMap<String, List<String>>();
77
78 private String streamId = null;
79 private int smVersion = 3;
80
81 private int stanzasReceived = 0;
82 private int stanzasSent = 0;
83
84 public long lastPaketReceived = 0;
85 public long lastPingSent = 0;
86 public long lastConnect = 0;
87 public long lastSessionStarted = 0;
88
89 private int attempt = 0;
90
91 private static final int PACKET_IQ = 0;
92 private static final int PACKET_MESSAGE = 1;
93 private static final int PACKET_PRESENCE = 2;
94
95 private Hashtable<String, PacketReceived> packetCallbacks = new Hashtable<String, PacketReceived>();
96 private OnPresencePacketReceived presenceListener = null;
97 private OnJinglePacketReceived jingleListener = null;
98 private OnIqPacketReceived unregisteredIqListener = null;
99 private OnMessagePacketReceived messageListener = null;
100 private OnStatusChanged statusListener = null;
101 private OnTLSExceptionReceived tlsListener = null;
102 private OnBindListener bindListener = null;
103
104 public XmppConnection(Account account, PowerManager pm) {
105 this.account = account;
106 this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
107 account.getJid());
108 tagWriter = new TagWriter();
109 }
110
111 protected void changeStatus(int nextStatus) {
112 if (account.getStatus() != nextStatus) {
113 if ((nextStatus == Account.STATUS_OFFLINE)
114 && (account.getStatus() != Account.STATUS_CONNECTING)
115 && (account.getStatus() != Account.STATUS_ONLINE)
116 && (account.getStatus() != Account.STATUS_DISABLED)) {
117 return;
118 }
119 if (nextStatus == Account.STATUS_ONLINE) {
120 this.attempt = 0;
121 }
122 account.setStatus(nextStatus);
123 if (statusListener != null) {
124 statusListener.onStatusChanged(account);
125 }
126 }
127 }
128
129 protected void connect() {
130 Log.d(LOGTAG, account.getJid() + ": connecting");
131 lastConnect = SystemClock.elapsedRealtime();
132 this.attempt++;
133 try {
134 shouldAuthenticate = shouldBind = !account
135 .isOptionSet(Account.OPTION_REGISTER);
136 tagReader = new XmlReader(wakeLock);
137 tagWriter = new TagWriter();
138 packetCallbacks.clear();
139 this.changeStatus(Account.STATUS_CONNECTING);
140 Bundle namePort = DNSHelper.getSRVRecord(account.getServer());
141 if ("timeout".equals(namePort.getString("error"))) {
142 Log.d(LOGTAG, account.getJid() + ": dns timeout");
143 this.changeStatus(Account.STATUS_OFFLINE);
144 return;
145 }
146 String srvRecordServer = namePort.getString("name");
147 String srvIpServer = namePort.getString("ipv4");
148 int srvRecordPort = namePort.getInt("port");
149 if (srvRecordServer != null) {
150 if (srvIpServer != null) {
151 Log.d(LOGTAG, account.getJid() + ": using values from dns "
152 + srvRecordServer + "[" + srvIpServer + "]:"
153 + srvRecordPort);
154 socket = new Socket(srvIpServer, srvRecordPort);
155 } else {
156 Log.d(LOGTAG, account.getJid() + ": using values from dns "
157 + srvRecordServer + ":" + srvRecordPort);
158 socket = new Socket(srvRecordServer, srvRecordPort);
159 }
160 } else {
161 socket = new Socket(account.getServer(), 5222);
162 }
163 OutputStream out = socket.getOutputStream();
164 tagWriter.setOutputStream(out);
165 InputStream in = socket.getInputStream();
166 tagReader.setInputStream(in);
167 tagWriter.beginDocument();
168 sendStartStream();
169 Tag nextTag;
170 while ((nextTag = tagReader.readTag()) != null) {
171 if (nextTag.isStart("stream")) {
172 processStream(nextTag);
173 break;
174 } else {
175 Log.d(LOGTAG, "found unexpected tag: " + nextTag.getName());
176 return;
177 }
178 }
179 if (socket.isConnected()) {
180 socket.close();
181 }
182 } catch (UnknownHostException e) {
183 this.changeStatus(Account.STATUS_SERVER_NOT_FOUND);
184 if (wakeLock.isHeld()) {
185 wakeLock.release();
186 }
187 return;
188 } catch (IOException e) {
189 if (account.getStatus() != Account.STATUS_TLS_ERROR) {
190 this.changeStatus(Account.STATUS_OFFLINE);
191 }
192 if (wakeLock.isHeld()) {
193 wakeLock.release();
194 }
195 return;
196 } catch (NoSuchAlgorithmException e) {
197 this.changeStatus(Account.STATUS_OFFLINE);
198 Log.d(LOGTAG, "compression exception " + e.getMessage());
199 if (wakeLock.isHeld()) {
200 wakeLock.release();
201 }
202 return;
203 } catch (XmlPullParserException e) {
204 this.changeStatus(Account.STATUS_OFFLINE);
205 Log.d(LOGTAG, "xml exception " + e.getMessage());
206 if (wakeLock.isHeld()) {
207 wakeLock.release();
208 }
209 return;
210 }
211
212 }
213
214 @Override
215 public void run() {
216 connect();
217 }
218
219 private void processStream(Tag currentTag) throws XmlPullParserException,
220 IOException, NoSuchAlgorithmException {
221 Tag nextTag = tagReader.readTag();
222 while ((nextTag != null) && (!nextTag.isEnd("stream"))) {
223 if (nextTag.isStart("error")) {
224 processStreamError(nextTag);
225 } else if (nextTag.isStart("features")) {
226 processStreamFeatures(nextTag);
227 if ((streamFeatures.getChildren().size() == 1)
228 && (streamFeatures.hasChild("starttls"))
229 && (!account.isOptionSet(Account.OPTION_USETLS))) {
230 changeStatus(Account.STATUS_SERVER_REQUIRES_TLS);
231 }
232 } else if (nextTag.isStart("proceed")) {
233 switchOverToTls(nextTag);
234 } else if (nextTag.isStart("compressed")) {
235 switchOverToZLib(nextTag);
236 } else if (nextTag.isStart("success")) {
237 Log.d(LOGTAG, account.getJid() + ": logged in");
238 tagReader.readTag();
239 tagReader.reset();
240 sendStartStream();
241 processStream(tagReader.readTag());
242 break;
243 } else if (nextTag.isStart("failure")) {
244 Element failure = tagReader.readElement(nextTag);
245 changeStatus(Account.STATUS_UNAUTHORIZED);
246 } else if (nextTag.isStart("challenge")) {
247 String challange = tagReader.readElement(nextTag).getContent();
248 Element response = new Element("response");
249 response.setAttribute("xmlns",
250 "urn:ietf:params:xml:ns:xmpp-sasl");
251 response.setContent(CryptoHelper.saslDigestMd5(account,
252 challange));
253 tagWriter.writeElement(response);
254 } else if (nextTag.isStart("enabled")) {
255 this.stanzasSent = 0;
256 Element enabled = tagReader.readElement(nextTag);
257 if ("true".equals(enabled.getAttribute("resume"))) {
258 this.streamId = enabled.getAttribute("id");
259 Log.d(LOGTAG, account.getJid() + ": stream managment("
260 + smVersion + ") enabled (resumable)");
261 } else {
262 Log.d(LOGTAG, account.getJid() + ": stream managment("
263 + smVersion + ") enabled");
264 }
265 this.lastSessionStarted = SystemClock.elapsedRealtime();
266 this.stanzasReceived = 0;
267 RequestPacket r = new RequestPacket(smVersion);
268 tagWriter.writeStanzaAsync(r);
269 } else if (nextTag.isStart("resumed")) {
270 lastPaketReceived = SystemClock.elapsedRealtime();
271 Log.d(LOGTAG, account.getJid() + ": session resumed");
272 tagReader.readElement(nextTag);
273 sendPing();
274 changeStatus(Account.STATUS_ONLINE);
275 } else if (nextTag.isStart("r")) {
276 tagReader.readElement(nextTag);
277 AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
278 // Log.d(LOGTAG,ack.toString());
279 tagWriter.writeStanzaAsync(ack);
280 } else if (nextTag.isStart("a")) {
281 Element ack = tagReader.readElement(nextTag);
282 lastPaketReceived = SystemClock.elapsedRealtime();
283 int serverSequence = Integer.parseInt(ack.getAttribute("h"));
284 if (serverSequence > this.stanzasSent) {
285 this.stanzasSent = serverSequence;
286 }
287 // Log.d(LOGTAG,"server ack"+ack.toString()+" ("+this.stanzasSent+")");
288 } else if (nextTag.isStart("failed")) {
289 tagReader.readElement(nextTag);
290 Log.d(LOGTAG, account.getJid() + ": resumption failed");
291 streamId = null;
292 if (account.getStatus() != Account.STATUS_ONLINE) {
293 sendBindRequest();
294 }
295 } else if (nextTag.isStart("iq")) {
296 processIq(nextTag);
297 } else if (nextTag.isStart("message")) {
298 processMessage(nextTag);
299 } else if (nextTag.isStart("presence")) {
300 processPresence(nextTag);
301 } else {
302 Log.d(LOGTAG, "found unexpected tag: " + nextTag.getName()
303 + " as child of " + currentTag.getName());
304 }
305 nextTag = tagReader.readTag();
306 }
307 if (account.getStatus() == Account.STATUS_ONLINE) {
308 account.setStatus(Account.STATUS_OFFLINE);
309 if (statusListener != null) {
310 statusListener.onStatusChanged(account);
311 }
312 }
313 }
314
315 private Element processPacket(Tag currentTag, int packetType)
316 throws XmlPullParserException, IOException {
317 Element element;
318 switch (packetType) {
319 case PACKET_IQ:
320 element = new IqPacket();
321 break;
322 case PACKET_MESSAGE:
323 element = new MessagePacket();
324 break;
325 case PACKET_PRESENCE:
326 element = new PresencePacket();
327 break;
328 default:
329 return null;
330 }
331 element.setAttributes(currentTag.getAttributes());
332 Tag nextTag = tagReader.readTag();
333 if (nextTag==null) {
334 throw new IOException("interrupted mid tag");
335 }
336 while (!nextTag.isEnd(element.getName())) {
337 if (!nextTag.isNo()) {
338 Element child = tagReader.readElement(nextTag);
339 if ((packetType == PACKET_IQ)
340 && ("jingle".equals(child.getName()))) {
341 element = new JinglePacket();
342 element.setAttributes(currentTag.getAttributes());
343 }
344 element.addChild(child);
345 }
346 nextTag = tagReader.readTag();
347 if (nextTag==null) {
348 throw new IOException("interrupted mid tag");
349 }
350 }
351 ++stanzasReceived;
352 lastPaketReceived = SystemClock.elapsedRealtime();
353 return element;
354 }
355
356 private void processIq(Tag currentTag) throws XmlPullParserException,
357 IOException {
358 IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
359
360 if (packet.getId() == null) {
361 return; // an iq packet without id is definitely invalid
362 }
363
364 if (packet instanceof JinglePacket) {
365 if (this.jingleListener != null) {
366 this.jingleListener.onJinglePacketReceived(account,
367 (JinglePacket) packet);
368 }
369 } else {
370 if (packetCallbacks.containsKey(packet.getId())) {
371 if (packetCallbacks.get(packet.getId()) instanceof OnIqPacketReceived) {
372 ((OnIqPacketReceived) packetCallbacks.get(packet.getId()))
373 .onIqPacketReceived(account, packet);
374 }
375
376 packetCallbacks.remove(packet.getId());
377 } else if (this.unregisteredIqListener != null) {
378 this.unregisteredIqListener.onIqPacketReceived(account, packet);
379 }
380 }
381 }
382
383 private void processMessage(Tag currentTag) throws XmlPullParserException,
384 IOException {
385 MessagePacket packet = (MessagePacket) processPacket(currentTag,
386 PACKET_MESSAGE);
387 String id = packet.getAttribute("id");
388 if ((id != null) && (packetCallbacks.containsKey(id))) {
389 if (packetCallbacks.get(id) instanceof OnMessagePacketReceived) {
390 ((OnMessagePacketReceived) packetCallbacks.get(id))
391 .onMessagePacketReceived(account, packet);
392 }
393 packetCallbacks.remove(id);
394 } else if (this.messageListener != null) {
395 this.messageListener.onMessagePacketReceived(account, packet);
396 }
397 }
398
399 private void processPresence(Tag currentTag) throws XmlPullParserException,
400 IOException {
401 PresencePacket packet = (PresencePacket) processPacket(currentTag,
402 PACKET_PRESENCE);
403 String id = packet.getAttribute("id");
404 if ((id != null) && (packetCallbacks.containsKey(id))) {
405 if (packetCallbacks.get(id) instanceof OnPresencePacketReceived) {
406 ((OnPresencePacketReceived) packetCallbacks.get(id))
407 .onPresencePacketReceived(account, packet);
408 }
409 packetCallbacks.remove(id);
410 } else if (this.presenceListener != null) {
411 this.presenceListener.onPresencePacketReceived(account, packet);
412 }
413 }
414
415 private void sendCompressionZlib() throws IOException {
416 Element compress = new Element("compress");
417 compress.setAttribute("xmlns", "http://jabber.org/protocol/compress");
418 compress.addChild("method").setContent("zlib");
419 tagWriter.writeElement(compress);
420 }
421
422 private void switchOverToZLib(Tag currentTag)
423 throws XmlPullParserException, IOException,
424 NoSuchAlgorithmException {
425 tagReader.readTag(); // read tag close
426
427 tagWriter.setOutputStream(new ZLibOutputStream(tagWriter
428 .getOutputStream()));
429 tagReader
430 .setInputStream(new ZLibInputStream(tagReader.getInputStream()));
431
432 sendStartStream();
433 Log.d(LOGTAG, account.getJid() + ": compression enabled");
434 processStream(tagReader.readTag());
435 }
436
437 private void sendStartTLS() throws IOException {
438 Tag startTLS = Tag.empty("starttls");
439 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
440 tagWriter.writeTag(startTLS);
441 }
442
443 private void switchOverToTls(Tag currentTag) throws XmlPullParserException,
444 IOException {
445 Tag nextTag = tagReader.readTag(); // should be proceed end tag
446 try {
447 SSLContext sc = SSLContext.getInstance("TLS");
448 TrustManagerFactory tmf = TrustManagerFactory
449 .getInstance(TrustManagerFactory.getDefaultAlgorithm());
450 // Initialise the TMF as you normally would, for example:
451 // tmf.in
452 try {
453 tmf.init((KeyStore) null);
454 } catch (KeyStoreException e1) {
455 // TODO Auto-generated catch block
456 e1.printStackTrace();
457 }
458
459 TrustManager[] trustManagers = tmf.getTrustManagers();
460 final X509TrustManager origTrustmanager = (X509TrustManager) trustManagers[0];
461
462 TrustManager[] wrappedTrustManagers = new TrustManager[] { new X509TrustManager() {
463
464 @Override
465 public void checkClientTrusted(X509Certificate[] chain,
466 String authType) throws CertificateException {
467 origTrustmanager.checkClientTrusted(chain, authType);
468 }
469
470 @Override
471 public void checkServerTrusted(X509Certificate[] chain,
472 String authType) throws CertificateException {
473 try {
474 origTrustmanager.checkServerTrusted(chain, authType);
475 } catch (CertificateException e) {
476 if (e.getCause() instanceof CertPathValidatorException) {
477 String sha;
478 try {
479 MessageDigest sha1 = MessageDigest
480 .getInstance("SHA1");
481 sha1.update(chain[0].getEncoded());
482 sha = CryptoHelper.bytesToHex(sha1.digest());
483 if (!sha.equals(account.getSSLFingerprint())) {
484 changeStatus(Account.STATUS_TLS_ERROR);
485 if (tlsListener != null) {
486 tlsListener.onTLSExceptionReceived(sha,
487 account);
488 }
489 throw new CertificateException();
490 }
491 } catch (NoSuchAlgorithmException e1) {
492 // TODO Auto-generated catch block
493 e1.printStackTrace();
494 }
495 } else {
496 throw new CertificateException();
497 }
498 }
499 }
500
501 @Override
502 public X509Certificate[] getAcceptedIssuers() {
503 return origTrustmanager.getAcceptedIssuers();
504 }
505
506 } };
507 sc.init(null, wrappedTrustManagers, null);
508 SSLSocketFactory factory = sc.getSocketFactory();
509 SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,
510 socket.getInetAddress().getHostAddress(), socket.getPort(),
511 true);
512 tagReader.setInputStream(sslSocket.getInputStream());
513 tagWriter.setOutputStream(sslSocket.getOutputStream());
514 sendStartStream();
515 Log.d(LOGTAG, account.getJid() + ": TLS connection established");
516 processStream(tagReader.readTag());
517 sslSocket.close();
518 } catch (NoSuchAlgorithmException e1) {
519 // TODO Auto-generated catch block
520 e1.printStackTrace();
521 } catch (KeyManagementException e) {
522 // TODO Auto-generated catch block
523 e.printStackTrace();
524 }
525 }
526
527 private void sendSaslAuthPlain() throws IOException {
528 String saslString = CryptoHelper.saslPlain(account.getUsername(),
529 account.getPassword());
530 Element auth = new Element("auth");
531 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
532 auth.setAttribute("mechanism", "PLAIN");
533 auth.setContent(saslString);
534 tagWriter.writeElement(auth);
535 }
536
537 private void sendSaslAuthDigestMd5() throws IOException {
538 Element auth = new Element("auth");
539 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
540 auth.setAttribute("mechanism", "DIGEST-MD5");
541 tagWriter.writeElement(auth);
542 }
543
544 private void processStreamFeatures(Tag currentTag)
545 throws XmlPullParserException, IOException {
546 this.streamFeatures = tagReader.readElement(currentTag);
547 if (this.streamFeatures.hasChild("starttls")
548 && account.isOptionSet(Account.OPTION_USETLS)) {
549 sendStartTLS();
550 } else if (compressionAvailable()) {
551 sendCompressionZlib();
552 } else if (this.streamFeatures.hasChild("register")
553 && (account.isOptionSet(Account.OPTION_REGISTER))) {
554 sendRegistryRequest();
555 } else if (!this.streamFeatures.hasChild("register")
556 && (account.isOptionSet(Account.OPTION_REGISTER))) {
557 changeStatus(Account.STATUS_REGISTRATION_NOT_SUPPORTED);
558 disconnect(true);
559 } else if (this.streamFeatures.hasChild("mechanisms")
560 && shouldAuthenticate) {
561 List<String> mechanisms = extractMechanisms(streamFeatures
562 .findChild("mechanisms"));
563 if (mechanisms.contains("PLAIN")) {
564 sendSaslAuthPlain();
565 } else if (mechanisms.contains("DIGEST-MD5")) {
566 sendSaslAuthDigestMd5();
567 }
568 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:"
569 + smVersion)
570 && streamId != null) {
571 ResumePacket resume = new ResumePacket(this.streamId,
572 stanzasReceived, smVersion);
573 this.tagWriter.writeStanzaAsync(resume);
574 } else if (this.streamFeatures.hasChild("bind") && shouldBind) {
575 sendBindRequest();
576 }
577 }
578
579 private boolean compressionAvailable() {
580 if (!this.streamFeatures.hasChild("compression",
581 "http://jabber.org/features/compress"))
582 return false;
583 if (!ZLibOutputStream.SUPPORTED)
584 return false;
585 if (!account.isOptionSet(Account.OPTION_USECOMPRESSION))
586 return false;
587
588 Element compression = this.streamFeatures.findChild("compression",
589 "http://jabber.org/features/compress");
590 for (Element child : compression.getChildren()) {
591 if (!"method".equals(child.getName()))
592 continue;
593
594 if ("zlib".equalsIgnoreCase(child.getContent())) {
595 return true;
596 }
597 }
598 return false;
599 }
600
601 private List<String> extractMechanisms(Element stream) {
602 ArrayList<String> mechanisms = new ArrayList<String>(stream
603 .getChildren().size());
604 for (Element child : stream.getChildren()) {
605 mechanisms.add(child.getContent());
606 }
607 return mechanisms;
608 }
609
610 private void sendRegistryRequest() {
611 IqPacket register = new IqPacket(IqPacket.TYPE_GET);
612 register.query("jabber:iq:register");
613 register.setTo(account.getServer());
614 sendIqPacket(register, new OnIqPacketReceived() {
615
616 @Override
617 public void onIqPacketReceived(Account account, IqPacket packet) {
618 Element instructions = packet.query().findChild("instructions");
619 if (packet.query().hasChild("username")
620 && (packet.query().hasChild("password"))) {
621 IqPacket register = new IqPacket(IqPacket.TYPE_SET);
622 Element username = new Element("username")
623 .setContent(account.getUsername());
624 Element password = new Element("password")
625 .setContent(account.getPassword());
626 register.query("jabber:iq:register").addChild(username);
627 register.query().addChild(password);
628 sendIqPacket(register, new OnIqPacketReceived() {
629
630 @Override
631 public void onIqPacketReceived(Account account,
632 IqPacket packet) {
633 if (packet.getType() == IqPacket.TYPE_RESULT) {
634 account.setOption(Account.OPTION_REGISTER,
635 false);
636 changeStatus(Account.STATUS_REGISTRATION_SUCCESSFULL);
637 } else if (packet.hasChild("error")
638 && (packet.findChild("error")
639 .hasChild("conflict"))) {
640 changeStatus(Account.STATUS_REGISTRATION_CONFLICT);
641 } else {
642 changeStatus(Account.STATUS_REGISTRATION_FAILED);
643 Log.d(LOGTAG, packet.toString());
644 }
645 disconnect(true);
646 }
647 });
648 } else {
649 changeStatus(Account.STATUS_REGISTRATION_FAILED);
650 disconnect(true);
651 Log.d(LOGTAG, account.getJid()
652 + ": could not register. instructions are"
653 + instructions.getContent());
654 }
655 }
656 });
657 }
658
659 private void sendBindRequest() throws IOException {
660 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
661 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
662 .addChild("resource").setContent(account.getResource());
663 this.sendUnboundIqPacket(iq, new OnIqPacketReceived() {
664 @Override
665 public void onIqPacketReceived(Account account, IqPacket packet) {
666 String resource = packet.findChild("bind").findChild("jid")
667 .getContent().split("/")[1];
668 account.setResource(resource);
669 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
670 smVersion = 3;
671 EnablePacket enable = new EnablePacket(smVersion);
672 tagWriter.writeStanzaAsync(enable);
673 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
674 smVersion = 2;
675 EnablePacket enable = new EnablePacket(smVersion);
676 tagWriter.writeStanzaAsync(enable);
677 }
678 sendServiceDiscoveryInfo(account.getServer());
679 sendServiceDiscoveryItems(account.getServer());
680 if (bindListener != null) {
681 bindListener.onBind(account);
682 }
683
684 changeStatus(Account.STATUS_ONLINE);
685 }
686 });
687 if (this.streamFeatures.hasChild("session")) {
688 Log.d(LOGTAG, account.getJid() + ": sending deprecated session");
689 IqPacket startSession = new IqPacket(IqPacket.TYPE_SET);
690 startSession.addChild("session",
691 "urn:ietf:params:xml:ns:xmpp-session");
692 this.sendUnboundIqPacket(startSession, null);
693 }
694 }
695
696 private void sendServiceDiscoveryInfo(final String server) {
697 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
698 iq.setTo(server);
699 iq.query("http://jabber.org/protocol/disco#info");
700 this.sendIqPacket(iq, new OnIqPacketReceived() {
701
702 @Override
703 public void onIqPacketReceived(Account account, IqPacket packet) {
704 List<Element> elements = packet.query().getChildren();
705 List<String> features = new ArrayList<String>();
706 for (int i = 0; i < elements.size(); ++i) {
707 if (elements.get(i).getName().equals("feature")) {
708 features.add(elements.get(i).getAttribute("var"));
709 }
710 }
711 disco.put(server, features);
712
713 if (account.getServer().equals(server)) {
714 enableAdvancedStreamFeatures();
715 }
716 }
717 });
718 }
719
720 private void enableAdvancedStreamFeatures() {
721 if (hasFeaturesCarbon()) {
722 sendEnableCarbons();
723 }
724 }
725
726 private void sendServiceDiscoveryItems(final String server) {
727 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
728 iq.setTo(server);
729 iq.query("http://jabber.org/protocol/disco#items");
730 this.sendIqPacket(iq, new OnIqPacketReceived() {
731
732 @Override
733 public void onIqPacketReceived(Account account, IqPacket packet) {
734 List<Element> elements = packet.query().getChildren();
735 for (int i = 0; i < elements.size(); ++i) {
736 if (elements.get(i).getName().equals("item")) {
737 String jid = elements.get(i).getAttribute("jid");
738 sendServiceDiscoveryInfo(jid);
739 }
740 }
741 }
742 });
743 }
744
745 private void sendEnableCarbons() {
746 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
747 iq.addChild("enable", "urn:xmpp:carbons:2");
748 this.sendIqPacket(iq, new OnIqPacketReceived() {
749
750 @Override
751 public void onIqPacketReceived(Account account, IqPacket packet) {
752 if (!packet.hasChild("error")) {
753 Log.d(LOGTAG, account.getJid()
754 + ": successfully enabled carbons");
755 } else {
756 Log.d(LOGTAG, account.getJid()
757 + ": error enableing carbons " + packet.toString());
758 }
759 }
760 });
761 }
762
763 private void processStreamError(Tag currentTag) {
764 Log.d(LOGTAG, "processStreamError");
765 }
766
767 private void sendStartStream() throws IOException {
768 Tag stream = Tag.start("stream:stream");
769 stream.setAttribute("from", account.getJid());
770 stream.setAttribute("to", account.getServer());
771 stream.setAttribute("version", "1.0");
772 stream.setAttribute("xml:lang", "en");
773 stream.setAttribute("xmlns", "jabber:client");
774 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
775 tagWriter.writeTag(stream);
776 }
777
778 private String nextRandomId() {
779 return new BigInteger(50, random).toString(32);
780 }
781
782 public void sendIqPacket(IqPacket packet, OnIqPacketReceived callback) {
783 if (packet.getId() == null) {
784 String id = nextRandomId();
785 packet.setAttribute("id", id);
786 }
787 packet.setFrom(account.getFullJid());
788 this.sendPacket(packet, callback);
789 }
790
791 public void sendUnboundIqPacket(IqPacket packet, OnIqPacketReceived callback) {
792 if (packet.getId() == null) {
793 String id = nextRandomId();
794 packet.setAttribute("id", id);
795 }
796 this.sendPacket(packet, callback);
797 }
798
799 public void sendMessagePacket(MessagePacket packet) {
800 this.sendPacket(packet, null);
801 }
802
803 public void sendMessagePacket(MessagePacket packet,
804 OnMessagePacketReceived callback) {
805 this.sendPacket(packet, callback);
806 }
807
808 public void sendPresencePacket(PresencePacket packet) {
809 this.sendPacket(packet, null);
810 }
811
812 public void sendPresencePacket(PresencePacket packet,
813 OnPresencePacketReceived callback) {
814 this.sendPacket(packet, callback);
815 }
816
817 private synchronized void sendPacket(final AbstractStanza packet,
818 PacketReceived callback) {
819 // TODO dont increment stanza count if packet = request packet or ack;
820 ++stanzasSent;
821 tagWriter.writeStanzaAsync(packet);
822 if (callback != null) {
823 if (packet.getId() == null) {
824 packet.setId(nextRandomId());
825 }
826 packetCallbacks.put(packet.getId(), callback);
827 }
828 }
829
830 public void sendPing() {
831 if (streamFeatures.hasChild("sm")) {
832 tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
833 } else {
834 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
835 iq.setFrom(account.getFullJid());
836 iq.addChild("ping", "urn:xmpp:ping");
837 this.sendIqPacket(iq, null);
838 }
839 }
840
841 public void setOnMessagePacketReceivedListener(
842 OnMessagePacketReceived listener) {
843 this.messageListener = listener;
844 }
845
846 public void setOnUnregisteredIqPacketReceivedListener(
847 OnIqPacketReceived listener) {
848 this.unregisteredIqListener = listener;
849 }
850
851 public void setOnPresencePacketReceivedListener(
852 OnPresencePacketReceived listener) {
853 this.presenceListener = listener;
854 }
855
856 public void setOnJinglePacketReceivedListener(
857 OnJinglePacketReceived listener) {
858 this.jingleListener = listener;
859 }
860
861 public void setOnStatusChangedListener(OnStatusChanged listener) {
862 this.statusListener = listener;
863 }
864
865 public void setOnTLSExceptionReceivedListener(
866 OnTLSExceptionReceived listener) {
867 this.tlsListener = listener;
868 }
869
870 public void setOnBindListener(OnBindListener listener) {
871 this.bindListener = listener;
872 }
873
874 public void disconnect(boolean force) {
875 changeStatus(Account.STATUS_OFFLINE);
876 Log.d(LOGTAG, "disconnecting");
877 try {
878 if (force) {
879 socket.close();
880 return;
881 }
882 new Thread(new Runnable() {
883
884 @Override
885 public void run() {
886 if (tagWriter.isActive()) {
887 tagWriter.finish();
888 try {
889 while (!tagWriter.finished()) {
890 Log.d(LOGTAG, "not yet finished");
891 Thread.sleep(100);
892 }
893 tagWriter.writeTag(Tag.end("stream:stream"));
894 } catch (IOException e) {
895 Log.d(LOGTAG, "io exception during disconnect");
896 } catch (InterruptedException e) {
897 Log.d(LOGTAG, "interrupted");
898 }
899 }
900 }
901 }).start();
902 } catch (IOException e) {
903 Log.d(LOGTAG, "io exception during disconnect");
904 }
905 }
906
907 public boolean hasFeatureRosterManagment() {
908 if (this.streamFeatures == null) {
909 return false;
910 } else {
911 return this.streamFeatures.hasChild("ver");
912 }
913 }
914
915 public boolean hasFeatureStreamManagment() {
916 if (this.streamFeatures == null) {
917 return false;
918 } else {
919 return this.streamFeatures.hasChild("sm");
920 }
921 }
922
923 public boolean hasFeaturesCarbon() {
924 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
925 }
926
927 public boolean hasDiscoFeature(String server, String feature) {
928 if (!disco.containsKey(server)) {
929 return false;
930 }
931 return disco.get(server).contains(feature);
932 }
933
934 public String findDiscoItemByFeature(String feature) {
935 Iterator<Entry<String, List<String>>> it = this.disco.entrySet()
936 .iterator();
937 while (it.hasNext()) {
938 Entry<String, List<String>> pairs = it.next();
939 if (pairs.getValue().contains(feature)&&pairs.getValue().size()==1) {
940 return pairs.getKey();
941 }
942 it.remove();
943 }
944 return null;
945 }
946
947 public void r() {
948 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
949 }
950
951 public int getReceivedStanzas() {
952 return this.stanzasReceived;
953 }
954
955 public int getSentStanzas() {
956 return this.stanzasSent;
957 }
958
959 public String getMucServer() {
960 return findDiscoItemByFeature("http://jabber.org/protocol/muc");
961 }
962
963 public int getTimeToNextAttempt() {
964 int interval = (int) (25 * Math.pow(1.5, attempt));
965 int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
966 return interval - secondsSinceLast;
967 }
968
969 public int getAttempt() {
970 return this.attempt;
971 }
972}