1package eu.siacs.conversations.xmpp;
2
3import java.io.IOException;
4import java.io.InputStream;
5import java.io.OutputStream;
6import java.math.BigInteger;
7import java.net.Socket;
8import java.net.UnknownHostException;
9import java.security.KeyManagementException;
10import java.security.NoSuchAlgorithmException;
11import java.security.SecureRandom;
12import java.util.ArrayList;
13import java.util.HashMap;
14import java.util.Hashtable;
15import java.util.List;
16import java.util.Map.Entry;
17
18import javax.net.ssl.HostnameVerifier;
19import javax.net.ssl.SSLContext;
20import javax.net.ssl.SSLSocket;
21import javax.net.ssl.SSLSocketFactory;
22
23import javax.net.ssl.X509TrustManager;
24
25import org.xmlpull.v1.XmlPullParserException;
26
27import de.duenndns.ssl.MemorizingTrustManager;
28
29import android.os.Bundle;
30import android.os.PowerManager;
31import android.os.PowerManager.WakeLock;
32import android.os.SystemClock;
33import android.util.Log;
34import eu.siacs.conversations.entities.Account;
35import eu.siacs.conversations.services.XmppConnectionService;
36import eu.siacs.conversations.utils.CryptoHelper;
37import eu.siacs.conversations.utils.DNSHelper;
38import eu.siacs.conversations.utils.zlib.ZLibOutputStream;
39import eu.siacs.conversations.utils.zlib.ZLibInputStream;
40import eu.siacs.conversations.xml.Element;
41import eu.siacs.conversations.xml.Tag;
42import eu.siacs.conversations.xml.TagWriter;
43import eu.siacs.conversations.xml.XmlReader;
44import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
45import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
46import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
47import eu.siacs.conversations.xmpp.stanzas.IqPacket;
48import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
49import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
50import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
51import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
52import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
53import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
54
55public class XmppConnection implements Runnable {
56
57 protected Account account;
58 private static final String LOGTAG = "xmppService";
59
60 private WakeLock wakeLock;
61
62 private SecureRandom mRandom;
63
64 private Socket socket;
65 private XmlReader tagReader;
66 private TagWriter tagWriter;
67
68 private Features features = new Features(this);
69
70 private boolean shouldBind = true;
71 private boolean shouldAuthenticate = true;
72 private Element streamFeatures;
73 private HashMap<String, List<String>> disco = new HashMap<String, List<String>>();
74
75 private String streamId = null;
76 private int smVersion = 3;
77
78 private boolean usingCompression = false;
79
80 private int stanzasReceived = 0;
81 private int stanzasSent = 0;
82
83 private long lastPaketReceived = 0;
84 private long lastPingSent = 0;
85 private long lastConnect = 0;
86 private 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 OnBindListener bindListener = null;
101 private MemorizingTrustManager mMemorizingTrustManager;
102
103 public XmppConnection(Account account, XmppConnectionService service) {
104 this.mRandom = service.getRNG();
105 this.mMemorizingTrustManager = service.getMemorizingTrustManager();
106 this.account = account;
107 this.wakeLock = service.getPowerManager().newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
108 account.getJid());
109 tagWriter = new TagWriter();
110 }
111
112 protected void changeStatus(int nextStatus) {
113 if (account.getStatus() != nextStatus) {
114 if ((nextStatus == Account.STATUS_OFFLINE)
115 && (account.getStatus() != Account.STATUS_CONNECTING)
116 && (account.getStatus() != Account.STATUS_ONLINE)
117 && (account.getStatus() != Account.STATUS_DISABLED)) {
118 return;
119 }
120 if (nextStatus == Account.STATUS_ONLINE) {
121 this.attempt = 0;
122 }
123 account.setStatus(nextStatus);
124 if (statusListener != null) {
125 statusListener.onStatusChanged(account);
126 }
127 }
128 }
129
130 protected void connect() {
131 Log.d(LOGTAG, account.getJid() + ": connecting");
132 usingCompression = false;
133 lastConnect = SystemClock.elapsedRealtime();
134 lastPingSent = SystemClock.elapsedRealtime();
135 this.attempt++;
136 try {
137 shouldAuthenticate = shouldBind = !account
138 .isOptionSet(Account.OPTION_REGISTER);
139 tagReader = new XmlReader(wakeLock);
140 tagWriter = new TagWriter();
141 packetCallbacks.clear();
142 this.changeStatus(Account.STATUS_CONNECTING);
143 Bundle namePort = DNSHelper.getSRVRecord(account.getServer());
144 if ("timeout".equals(namePort.getString("error"))) {
145 Log.d(LOGTAG, account.getJid() + ": dns timeout");
146 this.changeStatus(Account.STATUS_OFFLINE);
147 return;
148 }
149 String srvRecordServer = namePort.getString("name");
150 String srvIpServer = namePort.getString("ipv4");
151 int srvRecordPort = namePort.getInt("port");
152 if (srvRecordServer != null) {
153 if (srvIpServer != null) {
154 Log.d(LOGTAG, account.getJid() + ": using values from dns "
155 + srvRecordServer + "[" + srvIpServer + "]:"
156 + srvRecordPort);
157 socket = new Socket(srvIpServer, srvRecordPort);
158 } else {
159 Log.d(LOGTAG, account.getJid() + ": using values from dns "
160 + srvRecordServer + ":" + srvRecordPort);
161 socket = new Socket(srvRecordServer, srvRecordPort);
162 }
163 } else {
164 socket = new Socket(account.getServer(), 5222);
165 }
166 OutputStream out = socket.getOutputStream();
167 tagWriter.setOutputStream(out);
168 InputStream in = socket.getInputStream();
169 tagReader.setInputStream(in);
170 tagWriter.beginDocument();
171 sendStartStream();
172 Tag nextTag;
173 while ((nextTag = tagReader.readTag()) != null) {
174 if (nextTag.isStart("stream")) {
175 processStream(nextTag);
176 break;
177 } else {
178 Log.d(LOGTAG, "found unexpected tag: " + nextTag.getName());
179 return;
180 }
181 }
182 if (socket.isConnected()) {
183 socket.close();
184 }
185 } catch (UnknownHostException e) {
186 this.changeStatus(Account.STATUS_SERVER_NOT_FOUND);
187 if (wakeLock.isHeld()) {
188 try { wakeLock.release();} catch (RuntimeException re) {}
189 }
190 return;
191 } catch (IOException e) {
192 this.changeStatus(Account.STATUS_OFFLINE);
193 if (wakeLock.isHeld()) {
194 try { wakeLock.release();} catch (RuntimeException re) {}
195 }
196 return;
197 } catch (NoSuchAlgorithmException e) {
198 this.changeStatus(Account.STATUS_OFFLINE);
199 Log.d(LOGTAG, "compression exception " + e.getMessage());
200 if (wakeLock.isHeld()) {
201 try { wakeLock.release();} catch (RuntimeException re) {}
202 }
203 return;
204 } catch (XmlPullParserException e) {
205 this.changeStatus(Account.STATUS_OFFLINE);
206 Log.d(LOGTAG, "xml exception " + e.getMessage());
207 if (wakeLock.isHeld()) {
208 try { wakeLock.release();} catch (RuntimeException re) {}
209 }
210 return;
211 }
212
213 }
214
215 @Override
216 public void run() {
217 connect();
218 }
219
220 private void processStream(Tag currentTag) throws XmlPullParserException,
221 IOException, NoSuchAlgorithmException {
222 Tag nextTag = tagReader.readTag();
223 while ((nextTag != null) && (!nextTag.isEnd("stream"))) {
224 if (nextTag.isStart("error")) {
225 processStreamError(nextTag);
226 } else if (nextTag.isStart("features")) {
227 processStreamFeatures(nextTag);
228 } else if (nextTag.isStart("proceed")) {
229 switchOverToTls(nextTag);
230 } else if (nextTag.isStart("compressed")) {
231 switchOverToZLib(nextTag);
232 } else if (nextTag.isStart("success")) {
233 Log.d(LOGTAG, account.getJid() + ": logged in");
234 tagReader.readTag();
235 tagReader.reset();
236 sendStartStream();
237 processStream(tagReader.readTag());
238 break;
239 } else if (nextTag.isStart("failure")) {
240 tagReader.readElement(nextTag);
241 changeStatus(Account.STATUS_UNAUTHORIZED);
242 } else if (nextTag.isStart("challenge")) {
243 String challange = tagReader.readElement(nextTag).getContent();
244 Element response = new Element("response");
245 response.setAttribute("xmlns",
246 "urn:ietf:params:xml:ns:xmpp-sasl");
247 response.setContent(CryptoHelper.saslDigestMd5(account,
248 challange,mRandom));
249 tagWriter.writeElement(response);
250 } else if (nextTag.isStart("enabled")) {
251 this.stanzasSent = 0;
252 Element enabled = tagReader.readElement(nextTag);
253 if ("true".equals(enabled.getAttribute("resume"))) {
254 this.streamId = enabled.getAttribute("id");
255 Log.d(LOGTAG, account.getJid() + ": stream managment("
256 + smVersion + ") enabled (resumable)");
257 } else {
258 Log.d(LOGTAG, account.getJid() + ": stream managment("
259 + smVersion + ") enabled");
260 }
261 this.lastSessionStarted = SystemClock.elapsedRealtime();
262 this.stanzasReceived = 0;
263 RequestPacket r = new RequestPacket(smVersion);
264 tagWriter.writeStanzaAsync(r);
265 } else if (nextTag.isStart("resumed")) {
266 lastPaketReceived = SystemClock.elapsedRealtime();
267 Log.d(LOGTAG, account.getJid() + ": session resumed");
268 tagReader.readElement(nextTag);
269 sendPing();
270 changeStatus(Account.STATUS_ONLINE);
271 } else if (nextTag.isStart("r")) {
272 tagReader.readElement(nextTag);
273 AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
274 tagWriter.writeStanzaAsync(ack);
275 } else if (nextTag.isStart("a")) {
276 Element ack = tagReader.readElement(nextTag);
277 lastPaketReceived = SystemClock.elapsedRealtime();
278 int serverSequence = Integer.parseInt(ack.getAttribute("h"));
279 if (serverSequence > this.stanzasSent) {
280 this.stanzasSent = serverSequence;
281 }
282 } else if (nextTag.isStart("failed")) {
283 tagReader.readElement(nextTag);
284 Log.d(LOGTAG, account.getJid() + ": resumption failed");
285 streamId = null;
286 if (account.getStatus() != Account.STATUS_ONLINE) {
287 sendBindRequest();
288 }
289 } else if (nextTag.isStart("iq")) {
290 processIq(nextTag);
291 } else if (nextTag.isStart("message")) {
292 processMessage(nextTag);
293 } else if (nextTag.isStart("presence")) {
294 processPresence(nextTag);
295 }
296 nextTag = tagReader.readTag();
297 }
298 if (account.getStatus() == Account.STATUS_ONLINE) {
299 account.setStatus(Account.STATUS_OFFLINE);
300 if (statusListener != null) {
301 statusListener.onStatusChanged(account);
302 }
303 }
304 }
305
306 private Element processPacket(Tag currentTag, int packetType)
307 throws XmlPullParserException, IOException {
308 Element element;
309 switch (packetType) {
310 case PACKET_IQ:
311 element = new IqPacket();
312 break;
313 case PACKET_MESSAGE:
314 element = new MessagePacket();
315 break;
316 case PACKET_PRESENCE:
317 element = new PresencePacket();
318 break;
319 default:
320 return null;
321 }
322 element.setAttributes(currentTag.getAttributes());
323 Tag nextTag = tagReader.readTag();
324 if (nextTag==null) {
325 throw new IOException("interrupted mid tag");
326 }
327 while (!nextTag.isEnd(element.getName())) {
328 if (!nextTag.isNo()) {
329 Element child = tagReader.readElement(nextTag);
330 if ((packetType == PACKET_IQ)
331 && ("jingle".equals(child.getName()))) {
332 element = new JinglePacket();
333 element.setAttributes(currentTag.getAttributes());
334 }
335 element.addChild(child);
336 }
337 nextTag = tagReader.readTag();
338 if (nextTag==null) {
339 throw new IOException("interrupted mid tag");
340 }
341 }
342 ++stanzasReceived;
343 lastPaketReceived = SystemClock.elapsedRealtime();
344 return element;
345 }
346
347 private void processIq(Tag currentTag) throws XmlPullParserException,
348 IOException {
349 IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
350
351 if (packet.getId() == null) {
352 return; // an iq packet without id is definitely invalid
353 }
354
355 if (packet instanceof JinglePacket) {
356 if (this.jingleListener != null) {
357 this.jingleListener.onJinglePacketReceived(account,
358 (JinglePacket) packet);
359 }
360 } else {
361 if (packetCallbacks.containsKey(packet.getId())) {
362 if (packetCallbacks.get(packet.getId()) instanceof OnIqPacketReceived) {
363 ((OnIqPacketReceived) packetCallbacks.get(packet.getId()))
364 .onIqPacketReceived(account, packet);
365 }
366
367 packetCallbacks.remove(packet.getId());
368 } else if (this.unregisteredIqListener != null) {
369 this.unregisteredIqListener.onIqPacketReceived(account, packet);
370 }
371 }
372 }
373
374 private void processMessage(Tag currentTag) throws XmlPullParserException,
375 IOException {
376 MessagePacket packet = (MessagePacket) processPacket(currentTag,
377 PACKET_MESSAGE);
378 String id = packet.getAttribute("id");
379 if ((id != null) && (packetCallbacks.containsKey(id))) {
380 if (packetCallbacks.get(id) instanceof OnMessagePacketReceived) {
381 ((OnMessagePacketReceived) packetCallbacks.get(id))
382 .onMessagePacketReceived(account, packet);
383 }
384 packetCallbacks.remove(id);
385 } else if (this.messageListener != null) {
386 this.messageListener.onMessagePacketReceived(account, packet);
387 }
388 }
389
390 private void processPresence(Tag currentTag) throws XmlPullParserException,
391 IOException {
392 PresencePacket packet = (PresencePacket) processPacket(currentTag,
393 PACKET_PRESENCE);
394 String id = packet.getAttribute("id");
395 if ((id != null) && (packetCallbacks.containsKey(id))) {
396 if (packetCallbacks.get(id) instanceof OnPresencePacketReceived) {
397 ((OnPresencePacketReceived) packetCallbacks.get(id))
398 .onPresencePacketReceived(account, packet);
399 }
400 packetCallbacks.remove(id);
401 } else if (this.presenceListener != null) {
402 this.presenceListener.onPresencePacketReceived(account, packet);
403 }
404 }
405
406 private void sendCompressionZlib() throws IOException {
407 Element compress = new Element("compress");
408 compress.setAttribute("xmlns", "http://jabber.org/protocol/compress");
409 compress.addChild("method").setContent("zlib");
410 tagWriter.writeElement(compress);
411 }
412
413 private void switchOverToZLib(Tag currentTag)
414 throws XmlPullParserException, IOException,
415 NoSuchAlgorithmException {
416 tagReader.readTag(); // read tag close
417 tagWriter.setOutputStream(new ZLibOutputStream(tagWriter
418 .getOutputStream()));
419 tagReader
420 .setInputStream(new ZLibInputStream(tagReader.getInputStream()));
421
422 sendStartStream();
423 Log.d(LOGTAG, account.getJid() + ": compression enabled");
424 usingCompression = true;
425 processStream(tagReader.readTag());
426 }
427
428 private void sendStartTLS() throws IOException {
429 Tag startTLS = Tag.empty("starttls");
430 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
431 tagWriter.writeTag(startTLS);
432 }
433
434 private void switchOverToTls(Tag currentTag) throws XmlPullParserException,
435 IOException {
436 tagReader.readTag();
437 try {
438 SSLContext sc = SSLContext.getInstance("TLS");
439 sc.init(null, new X509TrustManager[] { this.mMemorizingTrustManager }, mRandom);
440 SSLSocketFactory factory = sc.getSocketFactory();
441
442 HostnameVerifier verifier = this.mMemorizingTrustManager.wrapHostnameVerifier(new org.apache.http.conn.ssl.StrictHostnameVerifier());
443 SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,
444 socket.getInetAddress().getHostAddress(), socket.getPort(),
445 true);
446
447 if (verifier != null && !verifier.verify(account.getServer(), sslSocket.getSession())) {
448 Log.d(LOGTAG, account.getJid() + ": host mismatch in TLS connection");
449 sslSocket.close();
450 throw new IOException();
451 }
452 tagReader.setInputStream(sslSocket.getInputStream());
453 tagWriter.setOutputStream(sslSocket.getOutputStream());
454 sendStartStream();
455 Log.d(LOGTAG, account.getJid() + ": TLS connection established");
456 processStream(tagReader.readTag());
457 sslSocket.close();
458 } catch (NoSuchAlgorithmException e1) {
459 e1.printStackTrace();
460 } catch (KeyManagementException e) {
461 e.printStackTrace();
462 }
463 }
464
465 private void sendSaslAuthPlain() throws IOException {
466 String saslString = CryptoHelper.saslPlain(account.getUsername(),
467 account.getPassword());
468 Element auth = new Element("auth");
469 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
470 auth.setAttribute("mechanism", "PLAIN");
471 auth.setContent(saslString);
472 tagWriter.writeElement(auth);
473 }
474
475 private void sendSaslAuthDigestMd5() throws IOException {
476 Element auth = new Element("auth");
477 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
478 auth.setAttribute("mechanism", "DIGEST-MD5");
479 tagWriter.writeElement(auth);
480 }
481
482 private void processStreamFeatures(Tag currentTag)
483 throws XmlPullParserException, IOException {
484 this.streamFeatures = tagReader.readElement(currentTag);
485 if (this.streamFeatures.hasChild("starttls")
486 && account.isOptionSet(Account.OPTION_USETLS)) {
487 sendStartTLS();
488 } else if (compressionAvailable()) {
489 sendCompressionZlib();
490 } else if (this.streamFeatures.hasChild("register")
491 && (account.isOptionSet(Account.OPTION_REGISTER))) {
492 sendRegistryRequest();
493 } else if (!this.streamFeatures.hasChild("register")
494 && (account.isOptionSet(Account.OPTION_REGISTER))) {
495 changeStatus(Account.STATUS_REGISTRATION_NOT_SUPPORTED);
496 disconnect(true);
497 } else if (this.streamFeatures.hasChild("mechanisms")
498 && shouldAuthenticate) {
499 List<String> mechanisms = extractMechanisms(streamFeatures
500 .findChild("mechanisms"));
501 if (mechanisms.contains("PLAIN")) {
502 sendSaslAuthPlain();
503 } else if (mechanisms.contains("DIGEST-MD5")) {
504 sendSaslAuthDigestMd5();
505 }
506 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:"
507 + smVersion)
508 && streamId != null) {
509 ResumePacket resume = new ResumePacket(this.streamId,
510 stanzasReceived, smVersion);
511 this.tagWriter.writeStanzaAsync(resume);
512 } else if (this.streamFeatures.hasChild("bind") && shouldBind) {
513 sendBindRequest();
514 }
515 }
516
517 private boolean compressionAvailable() {
518 if (!this.streamFeatures.hasChild("compression",
519 "http://jabber.org/features/compress"))
520 return false;
521 if (!ZLibOutputStream.SUPPORTED)
522 return false;
523 if (!account.isOptionSet(Account.OPTION_USECOMPRESSION))
524 return false;
525
526 Element compression = this.streamFeatures.findChild("compression",
527 "http://jabber.org/features/compress");
528 for (Element child : compression.getChildren()) {
529 if (!"method".equals(child.getName()))
530 continue;
531
532 if ("zlib".equalsIgnoreCase(child.getContent())) {
533 return true;
534 }
535 }
536 return false;
537 }
538
539 private List<String> extractMechanisms(Element stream) {
540 ArrayList<String> mechanisms = new ArrayList<String>(stream
541 .getChildren().size());
542 for (Element child : stream.getChildren()) {
543 mechanisms.add(child.getContent());
544 }
545 return mechanisms;
546 }
547
548 private void sendRegistryRequest() {
549 IqPacket register = new IqPacket(IqPacket.TYPE_GET);
550 register.query("jabber:iq:register");
551 register.setTo(account.getServer());
552 sendIqPacket(register, new OnIqPacketReceived() {
553
554 @Override
555 public void onIqPacketReceived(Account account, IqPacket packet) {
556 Element instructions = packet.query().findChild("instructions");
557 if (packet.query().hasChild("username")
558 && (packet.query().hasChild("password"))) {
559 IqPacket register = new IqPacket(IqPacket.TYPE_SET);
560 Element username = new Element("username")
561 .setContent(account.getUsername());
562 Element password = new Element("password")
563 .setContent(account.getPassword());
564 register.query("jabber:iq:register").addChild(username);
565 register.query().addChild(password);
566 sendIqPacket(register, new OnIqPacketReceived() {
567
568 @Override
569 public void onIqPacketReceived(Account account,
570 IqPacket packet) {
571 if (packet.getType() == IqPacket.TYPE_RESULT) {
572 account.setOption(Account.OPTION_REGISTER,
573 false);
574 changeStatus(Account.STATUS_REGISTRATION_SUCCESSFULL);
575 } else if (packet.hasChild("error")
576 && (packet.findChild("error")
577 .hasChild("conflict"))) {
578 changeStatus(Account.STATUS_REGISTRATION_CONFLICT);
579 } else {
580 changeStatus(Account.STATUS_REGISTRATION_FAILED);
581 Log.d(LOGTAG, packet.toString());
582 }
583 disconnect(true);
584 }
585 });
586 } else {
587 changeStatus(Account.STATUS_REGISTRATION_FAILED);
588 disconnect(true);
589 Log.d(LOGTAG, account.getJid()
590 + ": could not register. instructions are"
591 + instructions.getContent());
592 }
593 }
594 });
595 }
596
597 private void sendBindRequest() throws IOException {
598 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
599 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
600 .addChild("resource").setContent(account.getResource());
601 this.sendUnboundIqPacket(iq, new OnIqPacketReceived() {
602 @Override
603 public void onIqPacketReceived(Account account, IqPacket packet) {
604 Element bind = packet.findChild("bind");
605 if (bind!=null) {
606 Element jid = bind.findChild("jid");
607 if (jid!=null) {
608 account.setResource(jid.getContent().split("/")[1]);
609 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
610 smVersion = 3;
611 EnablePacket enable = new EnablePacket(smVersion);
612 tagWriter.writeStanzaAsync(enable);
613 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
614 smVersion = 2;
615 EnablePacket enable = new EnablePacket(smVersion);
616 tagWriter.writeStanzaAsync(enable);
617 }
618 sendServiceDiscoveryInfo(account.getServer());
619 sendServiceDiscoveryItems(account.getServer());
620 if (bindListener != null) {
621 bindListener.onBind(account);
622 }
623 changeStatus(Account.STATUS_ONLINE);
624 } else {
625 disconnect(true);
626 }
627 } else {
628 disconnect(true);
629 }
630 }
631 });
632 if (this.streamFeatures.hasChild("session")) {
633 Log.d(LOGTAG, account.getJid() + ": sending deprecated session");
634 IqPacket startSession = new IqPacket(IqPacket.TYPE_SET);
635 startSession.addChild("session",
636 "urn:ietf:params:xml:ns:xmpp-session");
637 this.sendUnboundIqPacket(startSession, null);
638 }
639 }
640
641 private void sendServiceDiscoveryInfo(final String server) {
642 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
643 iq.setTo(server);
644 iq.query("http://jabber.org/protocol/disco#info");
645 this.sendIqPacket(iq, new OnIqPacketReceived() {
646
647 @Override
648 public void onIqPacketReceived(Account account, IqPacket packet) {
649 List<Element> elements = packet.query().getChildren();
650 List<String> features = new ArrayList<String>();
651 for (int i = 0; i < elements.size(); ++i) {
652 if (elements.get(i).getName().equals("feature")) {
653 features.add(elements.get(i).getAttribute("var"));
654 }
655 }
656 disco.put(server, features);
657
658 if (account.getServer().equals(server)) {
659 enableAdvancedStreamFeatures();
660 }
661 }
662 });
663 }
664
665 private void enableAdvancedStreamFeatures() {
666 if (getFeatures().carbons()) {
667 sendEnableCarbons();
668 }
669 }
670
671 private void sendServiceDiscoveryItems(final String server) {
672 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
673 iq.setTo(server);
674 iq.query("http://jabber.org/protocol/disco#items");
675 this.sendIqPacket(iq, new OnIqPacketReceived() {
676
677 @Override
678 public void onIqPacketReceived(Account account, IqPacket packet) {
679 List<Element> elements = packet.query().getChildren();
680 for (int i = 0; i < elements.size(); ++i) {
681 if (elements.get(i).getName().equals("item")) {
682 String jid = elements.get(i).getAttribute("jid");
683 sendServiceDiscoveryInfo(jid);
684 }
685 }
686 }
687 });
688 }
689
690 private void sendEnableCarbons() {
691 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
692 iq.addChild("enable", "urn:xmpp:carbons:2");
693 this.sendIqPacket(iq, new OnIqPacketReceived() {
694
695 @Override
696 public void onIqPacketReceived(Account account, IqPacket packet) {
697 if (!packet.hasChild("error")) {
698 Log.d(LOGTAG, account.getJid()
699 + ": successfully enabled carbons");
700 } else {
701 Log.d(LOGTAG, account.getJid()
702 + ": error enableing carbons " + packet.toString());
703 }
704 }
705 });
706 }
707
708 private void processStreamError(Tag currentTag) {
709 Log.d(LOGTAG, "processStreamError");
710 }
711
712 private void sendStartStream() throws IOException {
713 Tag stream = Tag.start("stream:stream");
714 stream.setAttribute("from", account.getJid());
715 stream.setAttribute("to", account.getServer());
716 stream.setAttribute("version", "1.0");
717 stream.setAttribute("xml:lang", "en");
718 stream.setAttribute("xmlns", "jabber:client");
719 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
720 tagWriter.writeTag(stream);
721 }
722
723 private String nextRandomId() {
724 return new BigInteger(50, mRandom).toString(32);
725 }
726
727 public void sendIqPacket(IqPacket packet, OnIqPacketReceived callback) {
728 if (packet.getId() == null) {
729 String id = nextRandomId();
730 packet.setAttribute("id", id);
731 }
732 packet.setFrom(account.getFullJid());
733 this.sendPacket(packet, callback);
734 }
735
736 public void sendUnboundIqPacket(IqPacket packet, OnIqPacketReceived callback) {
737 if (packet.getId() == null) {
738 String id = nextRandomId();
739 packet.setAttribute("id", id);
740 }
741 this.sendPacket(packet, callback);
742 }
743
744 public void sendMessagePacket(MessagePacket packet) {
745 this.sendPacket(packet, null);
746 }
747
748 public void sendPresencePacket(PresencePacket packet) {
749 this.sendPacket(packet, null);
750 }
751
752 private synchronized void sendPacket(final AbstractStanza packet,
753 PacketReceived callback) {
754 // TODO dont increment stanza count if packet = request packet or ack;
755 ++stanzasSent;
756 tagWriter.writeStanzaAsync(packet);
757 if (callback != null) {
758 if (packet.getId() == null) {
759 packet.setId(nextRandomId());
760 }
761 packetCallbacks.put(packet.getId(), callback);
762 }
763 }
764
765 public void sendPing() {
766 if (streamFeatures.hasChild("sm")) {
767 tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
768 } else {
769 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
770 iq.setFrom(account.getFullJid());
771 iq.addChild("ping", "urn:xmpp:ping");
772 this.sendIqPacket(iq, null);
773 }
774 this.lastPingSent = SystemClock.elapsedRealtime();
775 }
776
777 public void setOnMessagePacketReceivedListener(
778 OnMessagePacketReceived listener) {
779 this.messageListener = listener;
780 }
781
782 public void setOnUnregisteredIqPacketReceivedListener(
783 OnIqPacketReceived listener) {
784 this.unregisteredIqListener = listener;
785 }
786
787 public void setOnPresencePacketReceivedListener(
788 OnPresencePacketReceived listener) {
789 this.presenceListener = listener;
790 }
791
792 public void setOnJinglePacketReceivedListener(
793 OnJinglePacketReceived listener) {
794 this.jingleListener = listener;
795 }
796
797 public void setOnStatusChangedListener(OnStatusChanged listener) {
798 this.statusListener = listener;
799 }
800
801 public void setOnBindListener(OnBindListener listener) {
802 this.bindListener = listener;
803 }
804
805 public void disconnect(boolean force) {
806 changeStatus(Account.STATUS_OFFLINE);
807 Log.d(LOGTAG, "disconnecting");
808 try {
809 if (force) {
810 socket.close();
811 return;
812 }
813 new Thread(new Runnable() {
814
815 @Override
816 public void run() {
817 if (tagWriter.isActive()) {
818 tagWriter.finish();
819 try {
820 while (!tagWriter.finished()) {
821 Log.d(LOGTAG, "not yet finished");
822 Thread.sleep(100);
823 }
824 tagWriter.writeTag(Tag.end("stream:stream"));
825 } catch (IOException e) {
826 Log.d(LOGTAG, "io exception during disconnect");
827 } catch (InterruptedException e) {
828 Log.d(LOGTAG, "interrupted");
829 }
830 }
831 }
832 }).start();
833 } catch (IOException e) {
834 Log.d(LOGTAG, "io exception during disconnect");
835 }
836 }
837
838 public List<String> findDiscoItemsByFeature(String feature) {
839 List<String> items = new ArrayList<String>();
840 for (Entry<String, List<String>> cursor : disco.entrySet()) {
841 if (cursor.getValue().contains(feature)) {
842 items.add(cursor.getKey());
843 }
844 }
845 return items;
846 }
847
848 public String findDiscoItemByFeature(String feature) {
849 List<String> items = findDiscoItemsByFeature(feature);
850 if (items.size()>=1) {
851 return items.get(0);
852 }
853 return null;
854 }
855
856 public void r() {
857 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
858 }
859
860 public String getMucServer() {
861 return findDiscoItemByFeature("http://jabber.org/protocol/muc");
862 }
863
864 public int getTimeToNextAttempt() {
865 int interval = (int) (25 * Math.pow(1.5, attempt));
866 int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
867 return interval - secondsSinceLast;
868 }
869
870 public int getAttempt() {
871 return this.attempt;
872 }
873
874 public Features getFeatures() {
875 return this.features;
876 }
877
878 public class Features {
879 XmppConnection connection;
880 public Features(XmppConnection connection) {
881 this.connection = connection;
882 }
883
884 private boolean hasDiscoFeature(String server, String feature) {
885 if (!connection.disco.containsKey(server)) {
886 return false;
887 }
888 return connection.disco.get(server).contains(feature);
889 }
890
891 public boolean carbons() {
892 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
893 }
894
895 public boolean sm() {
896 if (connection.streamFeatures == null) {
897 return false;
898 } else {
899 return connection.streamFeatures.hasChild("sm");
900 }
901 }
902
903 public boolean pubsub() {
904 return hasDiscoFeature(account.getServer(), "http://jabber.org/protocol/pubsub#publish");
905 }
906
907 public boolean rosterVersioning() {
908 if (connection.streamFeatures == null) {
909 return false;
910 } else {
911 return connection.streamFeatures.hasChild("ver");
912 }
913 }
914
915 public boolean streamhost() {
916 return connection.findDiscoItemByFeature("http://jabber.org/protocol/bytestreams") != null;
917 }
918
919 public boolean compression() {
920 return connection.usingCompression;
921 }
922
923 public int getCompatibility() {
924 int hit = 0;
925 int miss = 0;
926 if (carbons()) {
927 ++hit;
928 } else {
929 ++miss;
930 }
931 if (sm()) {
932 ++hit;
933 } else {
934 ++miss;
935 }
936 if (pubsub()) {
937 ++hit;
938 } else {
939 ++miss;
940 }
941 if (streamhost()) {
942 ++hit;
943 } else {
944 ++miss;
945 }
946 if (compression()) {
947 ++hit;
948 } else {
949 ++miss;
950 }
951 return (int) (((float) hit) / (hit + miss) * 100);
952 }
953 }
954
955 public long getLastSessionEstablished() {
956 long diff;
957 if (this.lastSessionStarted == 0) {
958 diff = SystemClock.elapsedRealtime() - this.lastConnect;
959 } else {
960 diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
961 }
962 return System.currentTimeMillis() - diff;
963 }
964
965 public long getLastConnect() {
966 return this.lastConnect;
967 }
968
969 public long getLastPingSent() {
970 return this.lastPingSent;
971 }
972
973 public long getLastPacketReceived() {
974 return this.lastPaketReceived;
975 }
976}