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 Element resumed = tagReader.readElement(nextTag);
270 String h = resumed.getAttribute("h");
271 try {
272 int serverCount = Integer.parseInt(h);
273 if (serverCount!=stanzasSent) {
274 Log.d(LOGTAG,account.getJid() + ": session resumed with lost packages");
275 stanzasSent = serverCount;
276 } else {
277 Log.d(LOGTAG, account.getJid() + ": session resumed");
278 }
279 if (acknowledgedListener!=null) {
280 for(int i = 0; i < messageReceipts.size(); ++i) {
281 if (serverCount>=messageReceipts.keyAt(i)) {
282 acknowledgedListener.onMessageAcknowledged(account, messageReceipts.valueAt(i));
283 }
284 }
285 }
286 messageReceipts.clear();
287 } catch (NumberFormatException e) {
288
289 }
290 changeStatus(Account.STATUS_ONLINE);
291 } else if (nextTag.isStart("r")) {
292 tagReader.readElement(nextTag);
293 AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
294 tagWriter.writeStanzaAsync(ack);
295 } else if (nextTag.isStart("a")) {
296 Element ack = tagReader.readElement(nextTag);
297 lastPaketReceived = SystemClock.elapsedRealtime();
298 int serverSequence = Integer.parseInt(ack.getAttribute("h"));
299 String msgId = this.messageReceipts.get(serverSequence);
300 if (msgId != null) {
301 if (this.acknowledgedListener != null) {
302 this.acknowledgedListener.onMessageAcknowledged(account, msgId);
303 }
304 this.messageReceipts.remove(serverSequence);
305 }
306 } else if (nextTag.isStart("failed")) {
307 tagReader.readElement(nextTag);
308 Log.d(LOGTAG, account.getJid() + ": resumption failed");
309 streamId = null;
310 if (account.getStatus() != Account.STATUS_ONLINE) {
311 sendBindRequest();
312 }
313 } else if (nextTag.isStart("iq")) {
314 processIq(nextTag);
315 } else if (nextTag.isStart("message")) {
316 processMessage(nextTag);
317 } else if (nextTag.isStart("presence")) {
318 processPresence(nextTag);
319 }
320 nextTag = tagReader.readTag();
321 }
322 if (account.getStatus() == Account.STATUS_ONLINE) {
323 account.setStatus(Account.STATUS_OFFLINE);
324 if (statusListener != null) {
325 statusListener.onStatusChanged(account);
326 }
327 }
328 }
329
330 private Element processPacket(Tag currentTag, int packetType)
331 throws XmlPullParserException, IOException {
332 Element element;
333 switch (packetType) {
334 case PACKET_IQ:
335 element = new IqPacket();
336 break;
337 case PACKET_MESSAGE:
338 element = new MessagePacket();
339 break;
340 case PACKET_PRESENCE:
341 element = new PresencePacket();
342 break;
343 default:
344 return null;
345 }
346 element.setAttributes(currentTag.getAttributes());
347 Tag nextTag = tagReader.readTag();
348 if (nextTag==null) {
349 throw new IOException("interrupted mid tag");
350 }
351 while (!nextTag.isEnd(element.getName())) {
352 if (!nextTag.isNo()) {
353 Element child = tagReader.readElement(nextTag);
354 if ((packetType == PACKET_IQ)
355 && ("jingle".equals(child.getName()))) {
356 element = new JinglePacket();
357 element.setAttributes(currentTag.getAttributes());
358 }
359 element.addChild(child);
360 }
361 nextTag = tagReader.readTag();
362 if (nextTag==null) {
363 throw new IOException("interrupted mid tag");
364 }
365 }
366 ++stanzasReceived;
367 lastPaketReceived = SystemClock.elapsedRealtime();
368 return element;
369 }
370
371 private void processIq(Tag currentTag) throws XmlPullParserException,
372 IOException {
373 IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
374
375 if (packet.getId() == null) {
376 return; // an iq packet without id is definitely invalid
377 }
378
379 if (packet instanceof JinglePacket) {
380 if (this.jingleListener != null) {
381 this.jingleListener.onJinglePacketReceived(account,
382 (JinglePacket) packet);
383 }
384 } else {
385 if (packetCallbacks.containsKey(packet.getId())) {
386 if (packetCallbacks.get(packet.getId()) instanceof OnIqPacketReceived) {
387 ((OnIqPacketReceived) packetCallbacks.get(packet.getId()))
388 .onIqPacketReceived(account, packet);
389 }
390
391 packetCallbacks.remove(packet.getId());
392 } else if (this.unregisteredIqListener != null) {
393 this.unregisteredIqListener.onIqPacketReceived(account, packet);
394 }
395 }
396 }
397
398 private void processMessage(Tag currentTag) throws XmlPullParserException,
399 IOException {
400 MessagePacket packet = (MessagePacket) processPacket(currentTag,
401 PACKET_MESSAGE);
402 String id = packet.getAttribute("id");
403 if ((id != null) && (packetCallbacks.containsKey(id))) {
404 if (packetCallbacks.get(id) instanceof OnMessagePacketReceived) {
405 ((OnMessagePacketReceived) packetCallbacks.get(id))
406 .onMessagePacketReceived(account, packet);
407 }
408 packetCallbacks.remove(id);
409 } else if (this.messageListener != null) {
410 this.messageListener.onMessagePacketReceived(account, packet);
411 }
412 }
413
414 private void processPresence(Tag currentTag) throws XmlPullParserException,
415 IOException {
416 PresencePacket packet = (PresencePacket) processPacket(currentTag,
417 PACKET_PRESENCE);
418 String id = packet.getAttribute("id");
419 if ((id != null) && (packetCallbacks.containsKey(id))) {
420 if (packetCallbacks.get(id) instanceof OnPresencePacketReceived) {
421 ((OnPresencePacketReceived) packetCallbacks.get(id))
422 .onPresencePacketReceived(account, packet);
423 }
424 packetCallbacks.remove(id);
425 } else if (this.presenceListener != null) {
426 this.presenceListener.onPresencePacketReceived(account, packet);
427 }
428 }
429
430 private void sendCompressionZlib() throws IOException {
431 Element compress = new Element("compress");
432 compress.setAttribute("xmlns", "http://jabber.org/protocol/compress");
433 compress.addChild("method").setContent("zlib");
434 tagWriter.writeElement(compress);
435 }
436
437 private void switchOverToZLib(Tag currentTag)
438 throws XmlPullParserException, IOException,
439 NoSuchAlgorithmException {
440 tagReader.readTag(); // read tag close
441 tagWriter.setOutputStream(new ZLibOutputStream(tagWriter
442 .getOutputStream()));
443 tagReader
444 .setInputStream(new ZLibInputStream(tagReader.getInputStream()));
445
446 sendStartStream();
447 Log.d(LOGTAG, account.getJid() + ": compression enabled");
448 usingCompression = true;
449 processStream(tagReader.readTag());
450 }
451
452 private void sendStartTLS() throws IOException {
453 Tag startTLS = Tag.empty("starttls");
454 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
455 tagWriter.writeTag(startTLS);
456 }
457
458 private void switchOverToTls(Tag currentTag) throws XmlPullParserException,
459 IOException {
460 tagReader.readTag();
461 try {
462 SSLContext sc = SSLContext.getInstance("TLS");
463 sc.init(null, new X509TrustManager[] { this.mMemorizingTrustManager }, mRandom);
464 SSLSocketFactory factory = sc.getSocketFactory();
465
466 HostnameVerifier verifier = this.mMemorizingTrustManager.wrapHostnameVerifier(new org.apache.http.conn.ssl.StrictHostnameVerifier());
467 SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,
468 socket.getInetAddress().getHostAddress(), socket.getPort(),
469 true);
470
471 if (verifier != null && !verifier.verify(account.getServer(), sslSocket.getSession())) {
472 Log.d(LOGTAG, account.getJid() + ": host mismatch in TLS connection");
473 sslSocket.close();
474 throw new IOException();
475 }
476 tagReader.setInputStream(sslSocket.getInputStream());
477 tagWriter.setOutputStream(sslSocket.getOutputStream());
478 sendStartStream();
479 Log.d(LOGTAG, account.getJid() + ": TLS connection established");
480 processStream(tagReader.readTag());
481 sslSocket.close();
482 } catch (NoSuchAlgorithmException e1) {
483 e1.printStackTrace();
484 } catch (KeyManagementException e) {
485 e.printStackTrace();
486 }
487 }
488
489 private void sendSaslAuthPlain() throws IOException {
490 String saslString = CryptoHelper.saslPlain(account.getUsername(),
491 account.getPassword());
492 Element auth = new Element("auth");
493 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
494 auth.setAttribute("mechanism", "PLAIN");
495 auth.setContent(saslString);
496 tagWriter.writeElement(auth);
497 }
498
499 private void sendSaslAuthDigestMd5() throws IOException {
500 Element auth = new Element("auth");
501 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
502 auth.setAttribute("mechanism", "DIGEST-MD5");
503 tagWriter.writeElement(auth);
504 }
505
506 private void processStreamFeatures(Tag currentTag)
507 throws XmlPullParserException, IOException {
508 this.streamFeatures = tagReader.readElement(currentTag);
509 if (this.streamFeatures.hasChild("starttls")
510 && account.isOptionSet(Account.OPTION_USETLS)) {
511 sendStartTLS();
512 } else if (compressionAvailable()) {
513 sendCompressionZlib();
514 } else if (this.streamFeatures.hasChild("register")
515 && (account.isOptionSet(Account.OPTION_REGISTER))) {
516 sendRegistryRequest();
517 } else if (!this.streamFeatures.hasChild("register")
518 && (account.isOptionSet(Account.OPTION_REGISTER))) {
519 changeStatus(Account.STATUS_REGISTRATION_NOT_SUPPORTED);
520 disconnect(true);
521 } else if (this.streamFeatures.hasChild("mechanisms")
522 && shouldAuthenticate) {
523 List<String> mechanisms = extractMechanisms(streamFeatures
524 .findChild("mechanisms"));
525 if (mechanisms.contains("PLAIN")) {
526 sendSaslAuthPlain();
527 } else if (mechanisms.contains("DIGEST-MD5")) {
528 sendSaslAuthDigestMd5();
529 }
530 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:"
531 + smVersion)
532 && streamId != null) {
533 ResumePacket resume = new ResumePacket(this.streamId,
534 stanzasReceived, smVersion);
535 this.tagWriter.writeStanzaAsync(resume);
536 } else if (this.streamFeatures.hasChild("bind") && shouldBind) {
537 sendBindRequest();
538 }
539 }
540
541 private boolean compressionAvailable() {
542 if (!this.streamFeatures.hasChild("compression",
543 "http://jabber.org/features/compress"))
544 return false;
545 if (!ZLibOutputStream.SUPPORTED)
546 return false;
547 if (!account.isOptionSet(Account.OPTION_USECOMPRESSION))
548 return false;
549
550 Element compression = this.streamFeatures.findChild("compression",
551 "http://jabber.org/features/compress");
552 for (Element child : compression.getChildren()) {
553 if (!"method".equals(child.getName()))
554 continue;
555
556 if ("zlib".equalsIgnoreCase(child.getContent())) {
557 return true;
558 }
559 }
560 return false;
561 }
562
563 private List<String> extractMechanisms(Element stream) {
564 ArrayList<String> mechanisms = new ArrayList<String>(stream
565 .getChildren().size());
566 for (Element child : stream.getChildren()) {
567 mechanisms.add(child.getContent());
568 }
569 return mechanisms;
570 }
571
572 private void sendRegistryRequest() {
573 IqPacket register = new IqPacket(IqPacket.TYPE_GET);
574 register.query("jabber:iq:register");
575 register.setTo(account.getServer());
576 sendIqPacket(register, new OnIqPacketReceived() {
577
578 @Override
579 public void onIqPacketReceived(Account account, IqPacket packet) {
580 Element instructions = packet.query().findChild("instructions");
581 if (packet.query().hasChild("username")
582 && (packet.query().hasChild("password"))) {
583 IqPacket register = new IqPacket(IqPacket.TYPE_SET);
584 Element username = new Element("username")
585 .setContent(account.getUsername());
586 Element password = new Element("password")
587 .setContent(account.getPassword());
588 register.query("jabber:iq:register").addChild(username);
589 register.query().addChild(password);
590 sendIqPacket(register, new OnIqPacketReceived() {
591
592 @Override
593 public void onIqPacketReceived(Account account,
594 IqPacket packet) {
595 if (packet.getType() == IqPacket.TYPE_RESULT) {
596 account.setOption(Account.OPTION_REGISTER,
597 false);
598 changeStatus(Account.STATUS_REGISTRATION_SUCCESSFULL);
599 } else if (packet.hasChild("error")
600 && (packet.findChild("error")
601 .hasChild("conflict"))) {
602 changeStatus(Account.STATUS_REGISTRATION_CONFLICT);
603 } else {
604 changeStatus(Account.STATUS_REGISTRATION_FAILED);
605 Log.d(LOGTAG, packet.toString());
606 }
607 disconnect(true);
608 }
609 });
610 } else {
611 changeStatus(Account.STATUS_REGISTRATION_FAILED);
612 disconnect(true);
613 Log.d(LOGTAG, account.getJid()
614 + ": could not register. instructions are"
615 + instructions.getContent());
616 }
617 }
618 });
619 }
620
621 private void sendBindRequest() throws IOException {
622 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
623 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
624 .addChild("resource").setContent(account.getResource());
625 this.sendUnboundIqPacket(iq, new OnIqPacketReceived() {
626 @Override
627 public void onIqPacketReceived(Account account, IqPacket packet) {
628 Element bind = packet.findChild("bind");
629 if (bind!=null) {
630 Element jid = bind.findChild("jid");
631 if (jid!=null) {
632 account.setResource(jid.getContent().split("/")[1]);
633 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
634 smVersion = 3;
635 EnablePacket enable = new EnablePacket(smVersion);
636 tagWriter.writeStanzaAsync(enable);
637 stanzasSent = 0;
638 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
639 smVersion = 2;
640 EnablePacket enable = new EnablePacket(smVersion);
641 tagWriter.writeStanzaAsync(enable);
642 stanzasSent = 0;
643 }
644 sendServiceDiscoveryInfo(account.getServer());
645 sendServiceDiscoveryItems(account.getServer());
646 if (bindListener != null) {
647 bindListener.onBind(account);
648 }
649 changeStatus(Account.STATUS_ONLINE);
650 } else {
651 disconnect(true);
652 }
653 } else {
654 disconnect(true);
655 }
656 }
657 });
658 if (this.streamFeatures.hasChild("session")) {
659 Log.d(LOGTAG, account.getJid() + ": sending deprecated session");
660 IqPacket startSession = new IqPacket(IqPacket.TYPE_SET);
661 startSession.addChild("session",
662 "urn:ietf:params:xml:ns:xmpp-session");
663 this.sendUnboundIqPacket(startSession, null);
664 }
665 }
666
667 private void sendServiceDiscoveryInfo(final String server) {
668 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
669 iq.setTo(server);
670 iq.query("http://jabber.org/protocol/disco#info");
671 this.sendIqPacket(iq, new OnIqPacketReceived() {
672
673 @Override
674 public void onIqPacketReceived(Account account, IqPacket packet) {
675 List<Element> elements = packet.query().getChildren();
676 List<String> features = new ArrayList<String>();
677 for (int i = 0; i < elements.size(); ++i) {
678 if (elements.get(i).getName().equals("feature")) {
679 features.add(elements.get(i).getAttribute("var"));
680 }
681 }
682 disco.put(server, features);
683
684 if (account.getServer().equals(server)) {
685 enableAdvancedStreamFeatures();
686 }
687 }
688 });
689 }
690
691 private void enableAdvancedStreamFeatures() {
692 if (getFeatures().carbons()) {
693 sendEnableCarbons();
694 }
695 }
696
697 private void sendServiceDiscoveryItems(final String server) {
698 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
699 iq.setTo(server);
700 iq.query("http://jabber.org/protocol/disco#items");
701 this.sendIqPacket(iq, new OnIqPacketReceived() {
702
703 @Override
704 public void onIqPacketReceived(Account account, IqPacket packet) {
705 List<Element> elements = packet.query().getChildren();
706 for (int i = 0; i < elements.size(); ++i) {
707 if (elements.get(i).getName().equals("item")) {
708 String jid = elements.get(i).getAttribute("jid");
709 sendServiceDiscoveryInfo(jid);
710 }
711 }
712 }
713 });
714 }
715
716 private void sendEnableCarbons() {
717 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
718 iq.addChild("enable", "urn:xmpp:carbons:2");
719 this.sendIqPacket(iq, new OnIqPacketReceived() {
720
721 @Override
722 public void onIqPacketReceived(Account account, IqPacket packet) {
723 if (!packet.hasChild("error")) {
724 Log.d(LOGTAG, account.getJid()
725 + ": successfully enabled carbons");
726 } else {
727 Log.d(LOGTAG, account.getJid()
728 + ": error enableing carbons " + packet.toString());
729 }
730 }
731 });
732 }
733
734 private void processStreamError(Tag currentTag) {
735 Log.d(LOGTAG, "processStreamError");
736 }
737
738 private void sendStartStream() throws IOException {
739 Tag stream = Tag.start("stream:stream");
740 stream.setAttribute("from", account.getJid());
741 stream.setAttribute("to", account.getServer());
742 stream.setAttribute("version", "1.0");
743 stream.setAttribute("xml:lang", "en");
744 stream.setAttribute("xmlns", "jabber:client");
745 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
746 tagWriter.writeTag(stream);
747 }
748
749 private String nextRandomId() {
750 return new BigInteger(50, mRandom).toString(32);
751 }
752
753 public void sendIqPacket(IqPacket packet, OnIqPacketReceived callback) {
754 if (packet.getId() == null) {
755 String id = nextRandomId();
756 packet.setAttribute("id", id);
757 }
758 packet.setFrom(account.getFullJid());
759 this.sendPacket(packet, callback);
760 }
761
762 public void sendUnboundIqPacket(IqPacket packet, OnIqPacketReceived callback) {
763 if (packet.getId() == null) {
764 String id = nextRandomId();
765 packet.setAttribute("id", id);
766 }
767 this.sendPacket(packet, callback);
768 }
769
770 public void sendMessagePacket(MessagePacket packet) {
771 this.sendPacket(packet, null);
772 }
773
774 public void sendPresencePacket(PresencePacket packet) {
775 this.sendPacket(packet, null);
776 }
777
778 private synchronized void sendPacket(final AbstractStanza packet,
779 PacketReceived callback) {
780 if (packet.getName().equals("iq") || packet.getName().equals("message") || packet.getName().equals("presence")) {
781 ++stanzasSent;
782 }
783 tagWriter.writeStanzaAsync(packet);
784 if (packet instanceof MessagePacket && packet.getId() != null && this.streamId != null) {
785 Log.d(LOGTAG,"request delivery report for stanza "+stanzasSent);
786 this.messageReceipts.put(stanzasSent, packet.getId());
787 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
788 }
789 if (callback != null) {
790 if (packet.getId() == null) {
791 packet.setId(nextRandomId());
792 }
793 packetCallbacks.put(packet.getId(), callback);
794 }
795 }
796
797 public void sendPing() {
798 if (streamFeatures.hasChild("sm")) {
799 tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
800 } else {
801 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
802 iq.setFrom(account.getFullJid());
803 iq.addChild("ping", "urn:xmpp:ping");
804 this.sendIqPacket(iq, null);
805 }
806 this.lastPingSent = SystemClock.elapsedRealtime();
807 }
808
809 public void setOnMessagePacketReceivedListener(
810 OnMessagePacketReceived listener) {
811 this.messageListener = listener;
812 }
813
814 public void setOnUnregisteredIqPacketReceivedListener(
815 OnIqPacketReceived listener) {
816 this.unregisteredIqListener = listener;
817 }
818
819 public void setOnPresencePacketReceivedListener(
820 OnPresencePacketReceived listener) {
821 this.presenceListener = listener;
822 }
823
824 public void setOnJinglePacketReceivedListener(
825 OnJinglePacketReceived listener) {
826 this.jingleListener = listener;
827 }
828
829 public void setOnStatusChangedListener(OnStatusChanged listener) {
830 this.statusListener = listener;
831 }
832
833 public void setOnBindListener(OnBindListener listener) {
834 this.bindListener = listener;
835 }
836
837 public void setOnMessageAcknowledgeListener(OnMessageAcknowledged listener) {
838 this.acknowledgedListener = listener;
839 }
840
841 public void disconnect(boolean force) {
842 changeStatus(Account.STATUS_OFFLINE);
843 Log.d(LOGTAG, "disconnecting");
844 try {
845 if (force) {
846 socket.close();
847 return;
848 }
849 new Thread(new Runnable() {
850
851 @Override
852 public void run() {
853 if (tagWriter.isActive()) {
854 tagWriter.finish();
855 try {
856 while (!tagWriter.finished()) {
857 Log.d(LOGTAG, "not yet finished");
858 Thread.sleep(100);
859 }
860 tagWriter.writeTag(Tag.end("stream:stream"));
861 } catch (IOException e) {
862 Log.d(LOGTAG, "io exception during disconnect");
863 } catch (InterruptedException e) {
864 Log.d(LOGTAG, "interrupted");
865 }
866 }
867 }
868 }).start();
869 } catch (IOException e) {
870 Log.d(LOGTAG, "io exception during disconnect");
871 }
872 }
873
874 public List<String> findDiscoItemsByFeature(String feature) {
875 List<String> items = new ArrayList<String>();
876 for (Entry<String, List<String>> cursor : disco.entrySet()) {
877 if (cursor.getValue().contains(feature)) {
878 items.add(cursor.getKey());
879 }
880 }
881 return items;
882 }
883
884 public String findDiscoItemByFeature(String feature) {
885 List<String> items = findDiscoItemsByFeature(feature);
886 if (items.size()>=1) {
887 return items.get(0);
888 }
889 return null;
890 }
891
892 public void r() {
893 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
894 }
895
896 public String getMucServer() {
897 return findDiscoItemByFeature("http://jabber.org/protocol/muc");
898 }
899
900 public int getTimeToNextAttempt() {
901 int interval = (int) (25 * Math.pow(1.5, attempt));
902 int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
903 return interval - secondsSinceLast;
904 }
905
906 public int getAttempt() {
907 return this.attempt;
908 }
909
910 public Features getFeatures() {
911 return this.features;
912 }
913
914 public class Features {
915 XmppConnection connection;
916 public Features(XmppConnection connection) {
917 this.connection = connection;
918 }
919
920 private boolean hasDiscoFeature(String server, String feature) {
921 if (!connection.disco.containsKey(server)) {
922 return false;
923 }
924 return connection.disco.get(server).contains(feature);
925 }
926
927 public boolean carbons() {
928 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
929 }
930
931 public boolean sm() {
932 if (connection.streamFeatures == null) {
933 return false;
934 } else {
935 return connection.streamFeatures.hasChild("sm");
936 }
937 }
938
939 public boolean pubsub() {
940 return hasDiscoFeature(account.getServer(), "http://jabber.org/protocol/pubsub#publish");
941 }
942
943 public boolean rosterVersioning() {
944 if (connection.streamFeatures == null) {
945 return false;
946 } else {
947 return connection.streamFeatures.hasChild("ver");
948 }
949 }
950
951 public boolean streamhost() {
952 return connection.findDiscoItemByFeature("http://jabber.org/protocol/bytestreams") != null;
953 }
954
955 public boolean compression() {
956 return connection.usingCompression;
957 }
958 }
959
960 public long getLastSessionEstablished() {
961 long diff;
962 if (this.lastSessionStarted == 0) {
963 diff = SystemClock.elapsedRealtime() - this.lastConnect;
964 } else {
965 diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
966 }
967 return System.currentTimeMillis() - diff;
968 }
969
970 public long getLastConnect() {
971 return this.lastConnect;
972 }
973
974 public long getLastPingSent() {
975 return this.lastPingSent;
976 }
977
978 public long getLastPacketReceived() {
979 return this.lastPaketReceived;
980 }
981}