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 while (!nextTag.isEnd(element.getName())) {
334 if (!nextTag.isNo()) {
335 Element child = tagReader.readElement(nextTag);
336 if ((packetType == PACKET_IQ)
337 && ("jingle".equals(child.getName()))) {
338 element = new JinglePacket();
339 element.setAttributes(currentTag.getAttributes());
340 }
341 element.addChild(child);
342 }
343 nextTag = tagReader.readTag();
344 }
345 ++stanzasReceived;
346 lastPaketReceived = SystemClock.elapsedRealtime();
347 return element;
348 }
349
350 private void processIq(Tag currentTag) throws XmlPullParserException,
351 IOException {
352 IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
353
354 if (packet.getId() == null) {
355 return; // an iq packet without id is definitely invalid
356 }
357
358 if (packet instanceof JinglePacket) {
359 if (this.jingleListener != null) {
360 this.jingleListener.onJinglePacketReceived(account,
361 (JinglePacket) packet);
362 }
363 } else {
364 if (packetCallbacks.containsKey(packet.getId())) {
365 if (packetCallbacks.get(packet.getId()) instanceof OnIqPacketReceived) {
366 ((OnIqPacketReceived) packetCallbacks.get(packet.getId()))
367 .onIqPacketReceived(account, packet);
368 }
369
370 packetCallbacks.remove(packet.getId());
371 } else if (this.unregisteredIqListener != null) {
372 this.unregisteredIqListener.onIqPacketReceived(account, packet);
373 }
374 }
375 }
376
377 private void processMessage(Tag currentTag) throws XmlPullParserException,
378 IOException {
379 MessagePacket packet = (MessagePacket) processPacket(currentTag,
380 PACKET_MESSAGE);
381 String id = packet.getAttribute("id");
382 if ((id != null) && (packetCallbacks.containsKey(id))) {
383 if (packetCallbacks.get(id) instanceof OnMessagePacketReceived) {
384 ((OnMessagePacketReceived) packetCallbacks.get(id))
385 .onMessagePacketReceived(account, packet);
386 }
387 packetCallbacks.remove(id);
388 } else if (this.messageListener != null) {
389 this.messageListener.onMessagePacketReceived(account, packet);
390 }
391 }
392
393 private void processPresence(Tag currentTag) throws XmlPullParserException,
394 IOException {
395 PresencePacket packet = (PresencePacket) processPacket(currentTag,
396 PACKET_PRESENCE);
397 String id = packet.getAttribute("id");
398 if ((id != null) && (packetCallbacks.containsKey(id))) {
399 if (packetCallbacks.get(id) instanceof OnPresencePacketReceived) {
400 ((OnPresencePacketReceived) packetCallbacks.get(id))
401 .onPresencePacketReceived(account, packet);
402 }
403 packetCallbacks.remove(id);
404 } else if (this.presenceListener != null) {
405 this.presenceListener.onPresencePacketReceived(account, packet);
406 }
407 }
408
409 private void sendCompressionZlib() throws IOException {
410 Element compress = new Element("compress");
411 compress.setAttribute("xmlns", "http://jabber.org/protocol/compress");
412 compress.addChild("method").setContent("zlib");
413 tagWriter.writeElement(compress);
414 }
415
416 private void switchOverToZLib(Tag currentTag)
417 throws XmlPullParserException, IOException,
418 NoSuchAlgorithmException {
419 tagReader.readTag(); // read tag close
420
421 tagWriter.setOutputStream(new ZLibOutputStream(tagWriter
422 .getOutputStream()));
423 tagReader
424 .setInputStream(new ZLibInputStream(tagReader.getInputStream()));
425
426 sendStartStream();
427 Log.d(LOGTAG, account.getJid() + ": compression enabled");
428 processStream(tagReader.readTag());
429 }
430
431 private void sendStartTLS() throws IOException {
432 Tag startTLS = Tag.empty("starttls");
433 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
434 tagWriter.writeTag(startTLS);
435 }
436
437 private void switchOverToTls(Tag currentTag) throws XmlPullParserException,
438 IOException {
439 Tag nextTag = tagReader.readTag(); // should be proceed end tag
440 try {
441 SSLContext sc = SSLContext.getInstance("TLS");
442 TrustManagerFactory tmf = TrustManagerFactory
443 .getInstance(TrustManagerFactory.getDefaultAlgorithm());
444 // Initialise the TMF as you normally would, for example:
445 // tmf.in
446 try {
447 tmf.init((KeyStore) null);
448 } catch (KeyStoreException e1) {
449 // TODO Auto-generated catch block
450 e1.printStackTrace();
451 }
452
453 TrustManager[] trustManagers = tmf.getTrustManagers();
454 final X509TrustManager origTrustmanager = (X509TrustManager) trustManagers[0];
455
456 TrustManager[] wrappedTrustManagers = new TrustManager[] { new X509TrustManager() {
457
458 @Override
459 public void checkClientTrusted(X509Certificate[] chain,
460 String authType) throws CertificateException {
461 origTrustmanager.checkClientTrusted(chain, authType);
462 }
463
464 @Override
465 public void checkServerTrusted(X509Certificate[] chain,
466 String authType) throws CertificateException {
467 try {
468 origTrustmanager.checkServerTrusted(chain, authType);
469 } catch (CertificateException e) {
470 if (e.getCause() instanceof CertPathValidatorException) {
471 String sha;
472 try {
473 MessageDigest sha1 = MessageDigest
474 .getInstance("SHA1");
475 sha1.update(chain[0].getEncoded());
476 sha = CryptoHelper.bytesToHex(sha1.digest());
477 if (!sha.equals(account.getSSLFingerprint())) {
478 changeStatus(Account.STATUS_TLS_ERROR);
479 if (tlsListener != null) {
480 tlsListener.onTLSExceptionReceived(sha,
481 account);
482 }
483 throw new CertificateException();
484 }
485 } catch (NoSuchAlgorithmException e1) {
486 // TODO Auto-generated catch block
487 e1.printStackTrace();
488 }
489 } else {
490 throw new CertificateException();
491 }
492 }
493 }
494
495 @Override
496 public X509Certificate[] getAcceptedIssuers() {
497 return origTrustmanager.getAcceptedIssuers();
498 }
499
500 } };
501 sc.init(null, wrappedTrustManagers, null);
502 SSLSocketFactory factory = sc.getSocketFactory();
503 SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,
504 socket.getInetAddress().getHostAddress(), socket.getPort(),
505 true);
506 tagReader.setInputStream(sslSocket.getInputStream());
507 tagWriter.setOutputStream(sslSocket.getOutputStream());
508 sendStartStream();
509 Log.d(LOGTAG, account.getJid() + ": TLS connection established");
510 processStream(tagReader.readTag());
511 sslSocket.close();
512 } catch (NoSuchAlgorithmException e1) {
513 // TODO Auto-generated catch block
514 e1.printStackTrace();
515 } catch (KeyManagementException e) {
516 // TODO Auto-generated catch block
517 e.printStackTrace();
518 }
519 }
520
521 private void sendSaslAuthPlain() throws IOException {
522 String saslString = CryptoHelper.saslPlain(account.getUsername(),
523 account.getPassword());
524 Element auth = new Element("auth");
525 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
526 auth.setAttribute("mechanism", "PLAIN");
527 auth.setContent(saslString);
528 tagWriter.writeElement(auth);
529 }
530
531 private void sendSaslAuthDigestMd5() throws IOException {
532 Element auth = new Element("auth");
533 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
534 auth.setAttribute("mechanism", "DIGEST-MD5");
535 tagWriter.writeElement(auth);
536 }
537
538 private void processStreamFeatures(Tag currentTag)
539 throws XmlPullParserException, IOException {
540 this.streamFeatures = tagReader.readElement(currentTag);
541 if (this.streamFeatures.hasChild("starttls")
542 && account.isOptionSet(Account.OPTION_USETLS)) {
543 sendStartTLS();
544 } else if (compressionAvailable()) {
545 sendCompressionZlib();
546 } else if (this.streamFeatures.hasChild("register")
547 && (account.isOptionSet(Account.OPTION_REGISTER))) {
548 sendRegistryRequest();
549 } else if (!this.streamFeatures.hasChild("register")
550 && (account.isOptionSet(Account.OPTION_REGISTER))) {
551 changeStatus(Account.STATUS_REGISTRATION_NOT_SUPPORTED);
552 disconnect(true);
553 } else if (this.streamFeatures.hasChild("mechanisms")
554 && shouldAuthenticate) {
555 List<String> mechanisms = extractMechanisms(streamFeatures
556 .findChild("mechanisms"));
557 if (mechanisms.contains("PLAIN")) {
558 sendSaslAuthPlain();
559 } else if (mechanisms.contains("DIGEST-MD5")) {
560 sendSaslAuthDigestMd5();
561 }
562 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:"
563 + smVersion)
564 && streamId != null) {
565 ResumePacket resume = new ResumePacket(this.streamId,
566 stanzasReceived, smVersion);
567 this.tagWriter.writeStanzaAsync(resume);
568 } else if (this.streamFeatures.hasChild("bind") && shouldBind) {
569 sendBindRequest();
570 }
571 }
572
573 private boolean compressionAvailable() {
574 if (!this.streamFeatures.hasChild("compression",
575 "http://jabber.org/features/compress"))
576 return false;
577 if (!ZLibOutputStream.SUPPORTED)
578 return false;
579 if (!account.isOptionSet(Account.OPTION_USECOMPRESSION))
580 return false;
581
582 Element compression = this.streamFeatures.findChild("compression",
583 "http://jabber.org/features/compress");
584 for (Element child : compression.getChildren()) {
585 if (!"method".equals(child.getName()))
586 continue;
587
588 if ("zlib".equalsIgnoreCase(child.getContent())) {
589 return true;
590 }
591 }
592 return false;
593 }
594
595 private List<String> extractMechanisms(Element stream) {
596 ArrayList<String> mechanisms = new ArrayList<String>(stream
597 .getChildren().size());
598 for (Element child : stream.getChildren()) {
599 mechanisms.add(child.getContent());
600 }
601 return mechanisms;
602 }
603
604 private void sendRegistryRequest() {
605 IqPacket register = new IqPacket(IqPacket.TYPE_GET);
606 register.query("jabber:iq:register");
607 register.setTo(account.getServer());
608 sendIqPacket(register, new OnIqPacketReceived() {
609
610 @Override
611 public void onIqPacketReceived(Account account, IqPacket packet) {
612 Element instructions = packet.query().findChild("instructions");
613 if (packet.query().hasChild("username")
614 && (packet.query().hasChild("password"))) {
615 IqPacket register = new IqPacket(IqPacket.TYPE_SET);
616 Element username = new Element("username")
617 .setContent(account.getUsername());
618 Element password = new Element("password")
619 .setContent(account.getPassword());
620 register.query("jabber:iq:register").addChild(username);
621 register.query().addChild(password);
622 sendIqPacket(register, new OnIqPacketReceived() {
623
624 @Override
625 public void onIqPacketReceived(Account account,
626 IqPacket packet) {
627 if (packet.getType() == IqPacket.TYPE_RESULT) {
628 account.setOption(Account.OPTION_REGISTER,
629 false);
630 changeStatus(Account.STATUS_REGISTRATION_SUCCESSFULL);
631 } else if (packet.hasChild("error")
632 && (packet.findChild("error")
633 .hasChild("conflict"))) {
634 changeStatus(Account.STATUS_REGISTRATION_CONFLICT);
635 } else {
636 changeStatus(Account.STATUS_REGISTRATION_FAILED);
637 Log.d(LOGTAG, packet.toString());
638 }
639 disconnect(true);
640 }
641 });
642 } else {
643 changeStatus(Account.STATUS_REGISTRATION_FAILED);
644 disconnect(true);
645 Log.d(LOGTAG, account.getJid()
646 + ": could not register. instructions are"
647 + instructions.getContent());
648 }
649 }
650 });
651 }
652
653 private void sendBindRequest() throws IOException {
654 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
655 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
656 .addChild("resource").setContent(account.getResource());
657 this.sendUnboundIqPacket(iq, new OnIqPacketReceived() {
658 @Override
659 public void onIqPacketReceived(Account account, IqPacket packet) {
660 String resource = packet.findChild("bind").findChild("jid")
661 .getContent().split("/")[1];
662 account.setResource(resource);
663 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
664 smVersion = 3;
665 EnablePacket enable = new EnablePacket(smVersion);
666 tagWriter.writeStanzaAsync(enable);
667 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
668 smVersion = 2;
669 EnablePacket enable = new EnablePacket(smVersion);
670 tagWriter.writeStanzaAsync(enable);
671 }
672 sendServiceDiscoveryInfo(account.getServer());
673 sendServiceDiscoveryItems(account.getServer());
674 if (bindListener != null) {
675 bindListener.onBind(account);
676 }
677
678 changeStatus(Account.STATUS_ONLINE);
679 }
680 });
681 if (this.streamFeatures.hasChild("session")) {
682 Log.d(LOGTAG, account.getJid() + ": sending deprecated session");
683 IqPacket startSession = new IqPacket(IqPacket.TYPE_SET);
684 startSession.addChild("session",
685 "urn:ietf:params:xml:ns:xmpp-session");
686 this.sendUnboundIqPacket(startSession, null);
687 }
688 }
689
690 private void sendServiceDiscoveryInfo(final String server) {
691 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
692 iq.setTo(server);
693 iq.query("http://jabber.org/protocol/disco#info");
694 this.sendIqPacket(iq, new OnIqPacketReceived() {
695
696 @Override
697 public void onIqPacketReceived(Account account, IqPacket packet) {
698 List<Element> elements = packet.query().getChildren();
699 List<String> features = new ArrayList<String>();
700 for (int i = 0; i < elements.size(); ++i) {
701 if (elements.get(i).getName().equals("feature")) {
702 features.add(elements.get(i).getAttribute("var"));
703 }
704 }
705 disco.put(server, features);
706
707 if (account.getServer().equals(server)) {
708 enableAdvancedStreamFeatures();
709 }
710 }
711 });
712 }
713
714 private void enableAdvancedStreamFeatures() {
715 if (hasFeaturesCarbon()) {
716 sendEnableCarbons();
717 }
718 }
719
720 private void sendServiceDiscoveryItems(final String server) {
721 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
722 iq.setTo(server);
723 iq.query("http://jabber.org/protocol/disco#items");
724 this.sendIqPacket(iq, new OnIqPacketReceived() {
725
726 @Override
727 public void onIqPacketReceived(Account account, IqPacket packet) {
728 List<Element> elements = packet.query().getChildren();
729 for (int i = 0; i < elements.size(); ++i) {
730 if (elements.get(i).getName().equals("item")) {
731 String jid = elements.get(i).getAttribute("jid");
732 sendServiceDiscoveryInfo(jid);
733 }
734 }
735 }
736 });
737 }
738
739 private void sendEnableCarbons() {
740 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
741 iq.addChild("enable", "urn:xmpp:carbons:2");
742 this.sendIqPacket(iq, new OnIqPacketReceived() {
743
744 @Override
745 public void onIqPacketReceived(Account account, IqPacket packet) {
746 if (!packet.hasChild("error")) {
747 Log.d(LOGTAG, account.getJid()
748 + ": successfully enabled carbons");
749 } else {
750 Log.d(LOGTAG, account.getJid()
751 + ": error enableing carbons " + packet.toString());
752 }
753 }
754 });
755 }
756
757 private void processStreamError(Tag currentTag) {
758 Log.d(LOGTAG, "processStreamError");
759 }
760
761 private void sendStartStream() throws IOException {
762 Tag stream = Tag.start("stream:stream");
763 stream.setAttribute("from", account.getJid());
764 stream.setAttribute("to", account.getServer());
765 stream.setAttribute("version", "1.0");
766 stream.setAttribute("xml:lang", "en");
767 stream.setAttribute("xmlns", "jabber:client");
768 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
769 tagWriter.writeTag(stream);
770 }
771
772 private String nextRandomId() {
773 return new BigInteger(50, random).toString(32);
774 }
775
776 public void sendIqPacket(IqPacket packet, OnIqPacketReceived callback) {
777 if (packet.getId() == null) {
778 String id = nextRandomId();
779 packet.setAttribute("id", id);
780 }
781 packet.setFrom(account.getFullJid());
782 this.sendPacket(packet, callback);
783 }
784
785 public void sendUnboundIqPacket(IqPacket packet, OnIqPacketReceived callback) {
786 if (packet.getId() == null) {
787 String id = nextRandomId();
788 packet.setAttribute("id", id);
789 }
790 this.sendPacket(packet, callback);
791 }
792
793 public void sendMessagePacket(MessagePacket packet) {
794 this.sendPacket(packet, null);
795 }
796
797 public void sendMessagePacket(MessagePacket packet,
798 OnMessagePacketReceived callback) {
799 this.sendPacket(packet, callback);
800 }
801
802 public void sendPresencePacket(PresencePacket packet) {
803 this.sendPacket(packet, null);
804 }
805
806 public void sendPresencePacket(PresencePacket packet,
807 OnPresencePacketReceived callback) {
808 this.sendPacket(packet, callback);
809 }
810
811 private synchronized void sendPacket(final AbstractStanza packet,
812 PacketReceived callback) {
813 // TODO dont increment stanza count if packet = request packet or ack;
814 ++stanzasSent;
815 tagWriter.writeStanzaAsync(packet);
816 if (callback != null) {
817 if (packet.getId() == null) {
818 packet.setId(nextRandomId());
819 }
820 packetCallbacks.put(packet.getId(), callback);
821 }
822 }
823
824 public void sendPing() {
825 if (streamFeatures.hasChild("sm")) {
826 tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
827 } else {
828 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
829 iq.setFrom(account.getFullJid());
830 iq.addChild("ping", "urn:xmpp:ping");
831 this.sendIqPacket(iq, null);
832 }
833 }
834
835 public void setOnMessagePacketReceivedListener(
836 OnMessagePacketReceived listener) {
837 this.messageListener = listener;
838 }
839
840 public void setOnUnregisteredIqPacketReceivedListener(
841 OnIqPacketReceived listener) {
842 this.unregisteredIqListener = listener;
843 }
844
845 public void setOnPresencePacketReceivedListener(
846 OnPresencePacketReceived listener) {
847 this.presenceListener = listener;
848 }
849
850 public void setOnJinglePacketReceivedListener(
851 OnJinglePacketReceived listener) {
852 this.jingleListener = listener;
853 }
854
855 public void setOnStatusChangedListener(OnStatusChanged listener) {
856 this.statusListener = listener;
857 }
858
859 public void setOnTLSExceptionReceivedListener(
860 OnTLSExceptionReceived listener) {
861 this.tlsListener = listener;
862 }
863
864 public void setOnBindListener(OnBindListener listener) {
865 this.bindListener = listener;
866 }
867
868 public void disconnect(boolean force) {
869 changeStatus(Account.STATUS_OFFLINE);
870 Log.d(LOGTAG, "disconnecting");
871 try {
872 if (force) {
873 socket.close();
874 return;
875 }
876 new Thread(new Runnable() {
877
878 @Override
879 public void run() {
880 if (tagWriter.isActive()) {
881 tagWriter.finish();
882 try {
883 while (!tagWriter.finished()) {
884 Log.d(LOGTAG, "not yet finished");
885 Thread.sleep(100);
886 }
887 tagWriter.writeTag(Tag.end("stream:stream"));
888 } catch (IOException e) {
889 Log.d(LOGTAG, "io exception during disconnect");
890 } catch (InterruptedException e) {
891 Log.d(LOGTAG, "interrupted");
892 }
893 }
894 }
895 });
896 } catch (IOException e) {
897 Log.d(LOGTAG, "io exception during disconnect");
898 }
899 }
900
901 public boolean hasFeatureRosterManagment() {
902 if (this.streamFeatures == null) {
903 return false;
904 } else {
905 return this.streamFeatures.hasChild("ver");
906 }
907 }
908
909 public boolean hasFeatureStreamManagment() {
910 if (this.streamFeatures == null) {
911 return false;
912 } else {
913 return this.streamFeatures.hasChild("sm");
914 }
915 }
916
917 public boolean hasFeaturesCarbon() {
918 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
919 }
920
921 public boolean hasDiscoFeature(String server, String feature) {
922 if (!disco.containsKey(server)) {
923 return false;
924 }
925 return disco.get(server).contains(feature);
926 }
927
928 public String findDiscoItemByFeature(String feature) {
929 Iterator<Entry<String, List<String>>> it = this.disco.entrySet()
930 .iterator();
931 while (it.hasNext()) {
932 Entry<String, List<String>> pairs = it.next();
933 if (pairs.getValue().contains(feature)) {
934 return pairs.getKey();
935 }
936 it.remove();
937 }
938 return null;
939 }
940
941 public void r() {
942 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
943 }
944
945 public int getReceivedStanzas() {
946 return this.stanzasReceived;
947 }
948
949 public int getSentStanzas() {
950 return this.stanzasSent;
951 }
952
953 public String getMucServer() {
954 return findDiscoItemByFeature("http://jabber.org/protocol/muc");
955 }
956
957 public int getTimeToNextAttempt() {
958 int interval = (int) (25 * Math.pow(1.5, attempt));
959 int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
960 return interval - secondsSinceLast;
961 }
962
963 public int getAttempt() {
964 return this.attempt;
965 }
966}