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