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