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.Config;
36import eu.siacs.conversations.entities.Account;
37import eu.siacs.conversations.services.XmppConnectionService;
38import eu.siacs.conversations.utils.CryptoHelper;
39import eu.siacs.conversations.utils.DNSHelper;
40import eu.siacs.conversations.utils.zlib.ZLibOutputStream;
41import eu.siacs.conversations.utils.zlib.ZLibInputStream;
42import eu.siacs.conversations.xml.Element;
43import eu.siacs.conversations.xml.Tag;
44import eu.siacs.conversations.xml.TagWriter;
45import eu.siacs.conversations.xml.XmlReader;
46import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
47import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
48import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
49import eu.siacs.conversations.xmpp.stanzas.IqPacket;
50import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
51import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
52import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
53import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
54import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
55import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
56import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
57import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
58
59public class XmppConnection implements Runnable {
60
61 protected Account account;
62
63 private WakeLock wakeLock;
64
65 private SecureRandom mRandom;
66
67 private Socket socket;
68 private XmlReader tagReader;
69 private TagWriter tagWriter;
70
71 private Features features = new Features(this);
72
73 private boolean shouldBind = true;
74 private boolean shouldAuthenticate = true;
75 private Element streamFeatures;
76 private HashMap<String, List<String>> disco = new HashMap<String, List<String>>();
77
78 private String streamId = null;
79 private int smVersion = 3;
80 private SparseArray<String> messageReceipts = new SparseArray<String>();
81
82 private boolean usingCompression = false;
83
84 private int stanzasReceived = 0;
85 private int stanzasSent = 0;
86
87 private long lastPaketReceived = 0;
88 private long lastPingSent = 0;
89 private long lastConnect = 0;
90 private long lastSessionStarted = 0;
91
92 private int attempt = 0;
93
94 private static final int PACKET_IQ = 0;
95 private static final int PACKET_MESSAGE = 1;
96 private static final int PACKET_PRESENCE = 2;
97
98 private Hashtable<String, PacketReceived> packetCallbacks = new Hashtable<String, PacketReceived>();
99 private OnPresencePacketReceived presenceListener = null;
100 private OnJinglePacketReceived jingleListener = null;
101 private OnIqPacketReceived unregisteredIqListener = null;
102 private OnMessagePacketReceived messageListener = null;
103 private OnStatusChanged statusListener = null;
104 private OnBindListener bindListener = null;
105 private OnMessageAcknowledged acknowledgedListener = null;
106 private MemorizingTrustManager mMemorizingTrustManager;
107
108 public XmppConnection(Account account, XmppConnectionService service) {
109 this.mRandom = service.getRNG();
110 this.mMemorizingTrustManager = service.getMemorizingTrustManager();
111 this.account = account;
112 this.wakeLock = service.getPowerManager().newWakeLock(
113 PowerManager.PARTIAL_WAKE_LOCK, account.getJid());
114 tagWriter = new TagWriter();
115 }
116
117 protected void changeStatus(int nextStatus) {
118 if (account.getStatus() != nextStatus) {
119 if ((nextStatus == Account.STATUS_OFFLINE)
120 && (account.getStatus() != Account.STATUS_CONNECTING)
121 && (account.getStatus() != Account.STATUS_ONLINE)
122 && (account.getStatus() != Account.STATUS_DISABLED)) {
123 return;
124 }
125 if (nextStatus == Account.STATUS_ONLINE) {
126 this.attempt = 0;
127 }
128 account.setStatus(nextStatus);
129 if (statusListener != null) {
130 statusListener.onStatusChanged(account);
131 }
132 }
133 }
134
135 protected void connect() {
136 Log.d(Config.LOGTAG, account.getJid() + ": connecting");
137 usingCompression = false;
138 lastConnect = SystemClock.elapsedRealtime();
139 lastPingSent = SystemClock.elapsedRealtime();
140 this.attempt++;
141 try {
142 shouldAuthenticate = shouldBind = !account
143 .isOptionSet(Account.OPTION_REGISTER);
144 tagReader = new XmlReader(wakeLock);
145 tagWriter = new TagWriter();
146 packetCallbacks.clear();
147 this.changeStatus(Account.STATUS_CONNECTING);
148 Bundle namePort = DNSHelper.getSRVRecord(account.getServer());
149 if ("timeout".equals(namePort.getString("error"))) {
150 Log.d(Config.LOGTAG, account.getJid() + ": dns timeout");
151 this.changeStatus(Account.STATUS_OFFLINE);
152 return;
153 }
154 String srvRecordServer = namePort.getString("name");
155 String srvIpServer = namePort.getString("ipv4");
156 int srvRecordPort = namePort.getInt("port");
157 if (srvRecordServer != null) {
158 if (srvIpServer != null) {
159 Log.d(Config.LOGTAG, account.getJid()
160 + ": using values from dns " + srvRecordServer
161 + "[" + srvIpServer + "]:" + srvRecordPort);
162 socket = new Socket(srvIpServer, srvRecordPort);
163 } else {
164 Log.d(Config.LOGTAG, account.getJid()
165 + ": using values from dns " + srvRecordServer
166 + ":" + srvRecordPort);
167 socket = new Socket(srvRecordServer, srvRecordPort);
168 }
169 } else if (namePort.containsKey("error")
170 && "nosrv".equals(namePort.getString("error", null))) {
171 socket = new Socket(account.getServer(), 5222);
172 } else {
173 Log.d(Config.LOGTAG, account.getJid()
174 + ": timeout in DNS resolution");
175 changeStatus(Account.STATUS_OFFLINE);
176 return;
177 }
178 OutputStream out = socket.getOutputStream();
179 tagWriter.setOutputStream(out);
180 InputStream in = socket.getInputStream();
181 tagReader.setInputStream(in);
182 tagWriter.beginDocument();
183 sendStartStream();
184 Tag nextTag;
185 while ((nextTag = tagReader.readTag()) != null) {
186 if (nextTag.isStart("stream")) {
187 processStream(nextTag);
188 break;
189 } else {
190 Log.d(Config.LOGTAG,
191 "found unexpected tag: " + nextTag.getName());
192 return;
193 }
194 }
195 if (socket.isConnected()) {
196 socket.close();
197 }
198 } catch (UnknownHostException e) {
199 this.changeStatus(Account.STATUS_SERVER_NOT_FOUND);
200 if (wakeLock.isHeld()) {
201 try {
202 wakeLock.release();
203 } catch (RuntimeException re) {
204 }
205 }
206 return;
207 } catch (IOException e) {
208 this.changeStatus(Account.STATUS_OFFLINE);
209 if (wakeLock.isHeld()) {
210 try {
211 wakeLock.release();
212 } catch (RuntimeException re) {
213 }
214 }
215 return;
216 } catch (NoSuchAlgorithmException e) {
217 this.changeStatus(Account.STATUS_OFFLINE);
218 Log.d(Config.LOGTAG, "compression exception " + e.getMessage());
219 if (wakeLock.isHeld()) {
220 try {
221 wakeLock.release();
222 } catch (RuntimeException re) {
223 }
224 }
225 return;
226 } catch (XmlPullParserException e) {
227 this.changeStatus(Account.STATUS_OFFLINE);
228 Log.d(Config.LOGTAG, "xml exception " + e.getMessage());
229 if (wakeLock.isHeld()) {
230 try {
231 wakeLock.release();
232 } catch (RuntimeException re) {
233 }
234 }
235 return;
236 }
237
238 }
239
240 @Override
241 public void run() {
242 connect();
243 }
244
245 private void processStream(Tag currentTag) throws XmlPullParserException,
246 IOException, NoSuchAlgorithmException {
247 Tag nextTag = tagReader.readTag();
248 while ((nextTag != null) && (!nextTag.isEnd("stream"))) {
249 if (nextTag.isStart("error")) {
250 processStreamError(nextTag);
251 } else if (nextTag.isStart("features")) {
252 processStreamFeatures(nextTag);
253 } else if (nextTag.isStart("proceed")) {
254 switchOverToTls(nextTag);
255 } else if (nextTag.isStart("compressed")) {
256 switchOverToZLib(nextTag);
257 } else if (nextTag.isStart("success")) {
258 Log.d(Config.LOGTAG, account.getJid() + ": logged in");
259 tagReader.readTag();
260 tagReader.reset();
261 sendStartStream();
262 processStream(tagReader.readTag());
263 break;
264 } else if (nextTag.isStart("failure")) {
265 tagReader.readElement(nextTag);
266 changeStatus(Account.STATUS_UNAUTHORIZED);
267 } else if (nextTag.isStart("challenge")) {
268 String challange = tagReader.readElement(nextTag).getContent();
269 Element response = new Element("response");
270 response.setAttribute("xmlns",
271 "urn:ietf:params:xml:ns:xmpp-sasl");
272 response.setContent(CryptoHelper.saslDigestMd5(account,
273 challange, mRandom));
274 tagWriter.writeElement(response);
275 } else if (nextTag.isStart("enabled")) {
276 Element enabled = tagReader.readElement(nextTag);
277 if ("true".equals(enabled.getAttribute("resume"))) {
278 this.streamId = enabled.getAttribute("id");
279 Log.d(Config.LOGTAG, account.getJid()
280 + ": stream managment(" + smVersion
281 + ") enabled (resumable)");
282 } else {
283 Log.d(Config.LOGTAG, account.getJid()
284 + ": stream managment(" + smVersion + ") enabled");
285 }
286 this.lastSessionStarted = SystemClock.elapsedRealtime();
287 this.stanzasReceived = 0;
288 RequestPacket r = new RequestPacket(smVersion);
289 tagWriter.writeStanzaAsync(r);
290 } else if (nextTag.isStart("resumed")) {
291 lastPaketReceived = SystemClock.elapsedRealtime();
292 Element resumed = tagReader.readElement(nextTag);
293 String h = resumed.getAttribute("h");
294 try {
295 int serverCount = Integer.parseInt(h);
296 if (serverCount != stanzasSent) {
297 Log.d(Config.LOGTAG, account.getJid()
298 + ": session resumed with lost packages");
299 stanzasSent = serverCount;
300 } else {
301 Log.d(Config.LOGTAG, account.getJid()
302 + ": session resumed");
303 }
304 if (acknowledgedListener != null) {
305 for (int i = 0; i < messageReceipts.size(); ++i) {
306 if (serverCount >= messageReceipts.keyAt(i)) {
307 acknowledgedListener.onMessageAcknowledged(
308 account, messageReceipts.valueAt(i));
309 }
310 }
311 }
312 messageReceipts.clear();
313 } catch (NumberFormatException e) {
314
315 }
316 sendInitialPing();
317
318 } else if (nextTag.isStart("r")) {
319 tagReader.readElement(nextTag);
320 AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
321 tagWriter.writeStanzaAsync(ack);
322 } else if (nextTag.isStart("a")) {
323 Element ack = tagReader.readElement(nextTag);
324 lastPaketReceived = SystemClock.elapsedRealtime();
325 int serverSequence = Integer.parseInt(ack.getAttribute("h"));
326 String msgId = this.messageReceipts.get(serverSequence);
327 if (msgId != null) {
328 if (this.acknowledgedListener != null) {
329 this.acknowledgedListener.onMessageAcknowledged(
330 account, msgId);
331 }
332 this.messageReceipts.remove(serverSequence);
333 }
334 } else if (nextTag.isStart("failed")) {
335 tagReader.readElement(nextTag);
336 Log.d(Config.LOGTAG, account.getJid() + ": resumption failed");
337 streamId = null;
338 if (account.getStatus() != Account.STATUS_ONLINE) {
339 sendBindRequest();
340 }
341 } else if (nextTag.isStart("iq")) {
342 processIq(nextTag);
343 } else if (nextTag.isStart("message")) {
344 processMessage(nextTag);
345 } else if (nextTag.isStart("presence")) {
346 processPresence(nextTag);
347 }
348 nextTag = tagReader.readTag();
349 }
350 if (account.getStatus() == Account.STATUS_ONLINE) {
351 account.setStatus(Account.STATUS_OFFLINE);
352 if (statusListener != null) {
353 statusListener.onStatusChanged(account);
354 }
355 }
356 }
357
358 private void sendInitialPing() {
359 Log.d(Config.LOGTAG, account.getJid() + ": sending intial ping");
360 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
361 iq.setFrom(account.getFullJid());
362 iq.addChild("ping", "urn:xmpp:ping");
363 this.sendIqPacket(iq, new OnIqPacketReceived() {
364
365 @Override
366 public void onIqPacketReceived(Account account, IqPacket packet) {
367 Log.d(Config.LOGTAG, account.getJid()
368 + ": online with resource " + account.getResource());
369 changeStatus(Account.STATUS_ONLINE);
370 }
371 });
372 }
373
374 private Element processPacket(Tag currentTag, int packetType)
375 throws XmlPullParserException, IOException {
376 Element element;
377 switch (packetType) {
378 case PACKET_IQ:
379 element = new IqPacket();
380 break;
381 case PACKET_MESSAGE:
382 element = new MessagePacket();
383 break;
384 case PACKET_PRESENCE:
385 element = new PresencePacket();
386 break;
387 default:
388 return null;
389 }
390 element.setAttributes(currentTag.getAttributes());
391 Tag nextTag = tagReader.readTag();
392 if (nextTag == null) {
393 throw new IOException("interrupted mid tag");
394 }
395 while (!nextTag.isEnd(element.getName())) {
396 if (!nextTag.isNo()) {
397 Element child = tagReader.readElement(nextTag);
398 String type = currentTag.getAttribute("type");
399 if (packetType == PACKET_IQ
400 && "jingle".equals(child.getName())
401 && ("set".equalsIgnoreCase(type) || "get"
402 .equalsIgnoreCase(type))) {
403 element = new JinglePacket();
404 element.setAttributes(currentTag.getAttributes());
405 }
406 element.addChild(child);
407 }
408 nextTag = tagReader.readTag();
409 if (nextTag == null) {
410 throw new IOException("interrupted mid tag");
411 }
412 }
413 ++stanzasReceived;
414 lastPaketReceived = SystemClock.elapsedRealtime();
415 return element;
416 }
417
418 private void processIq(Tag currentTag) throws XmlPullParserException,
419 IOException {
420 IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
421
422 if (packet.getId() == null) {
423 return; // an iq packet without id is definitely invalid
424 }
425
426 if (packet instanceof JinglePacket) {
427 if (this.jingleListener != null) {
428 this.jingleListener.onJinglePacketReceived(account,
429 (JinglePacket) packet);
430 }
431 } else {
432 if (packetCallbacks.containsKey(packet.getId())) {
433 if (packetCallbacks.get(packet.getId()) instanceof OnIqPacketReceived) {
434 ((OnIqPacketReceived) packetCallbacks.get(packet.getId()))
435 .onIqPacketReceived(account, packet);
436 }
437
438 packetCallbacks.remove(packet.getId());
439 } else if ((packet.getType() == IqPacket.TYPE_GET || packet
440 .getType() == IqPacket.TYPE_SET)
441 && this.unregisteredIqListener != null) {
442 this.unregisteredIqListener.onIqPacketReceived(account, packet);
443 }
444 }
445 }
446
447 private void processMessage(Tag currentTag) throws XmlPullParserException,
448 IOException {
449 MessagePacket packet = (MessagePacket) processPacket(currentTag,
450 PACKET_MESSAGE);
451 String id = packet.getAttribute("id");
452 if ((id != null) && (packetCallbacks.containsKey(id))) {
453 if (packetCallbacks.get(id) instanceof OnMessagePacketReceived) {
454 ((OnMessagePacketReceived) packetCallbacks.get(id))
455 .onMessagePacketReceived(account, packet);
456 }
457 packetCallbacks.remove(id);
458 } else if (this.messageListener != null) {
459 this.messageListener.onMessagePacketReceived(account, packet);
460 }
461 }
462
463 private void processPresence(Tag currentTag) throws XmlPullParserException,
464 IOException {
465 PresencePacket packet = (PresencePacket) processPacket(currentTag,
466 PACKET_PRESENCE);
467 String id = packet.getAttribute("id");
468 if ((id != null) && (packetCallbacks.containsKey(id))) {
469 if (packetCallbacks.get(id) instanceof OnPresencePacketReceived) {
470 ((OnPresencePacketReceived) packetCallbacks.get(id))
471 .onPresencePacketReceived(account, packet);
472 }
473 packetCallbacks.remove(id);
474 } else if (this.presenceListener != null) {
475 this.presenceListener.onPresencePacketReceived(account, packet);
476 }
477 }
478
479 private void sendCompressionZlib() throws IOException {
480 Element compress = new Element("compress");
481 compress.setAttribute("xmlns", "http://jabber.org/protocol/compress");
482 compress.addChild("method").setContent("zlib");
483 tagWriter.writeElement(compress);
484 }
485
486 private void switchOverToZLib(Tag currentTag)
487 throws XmlPullParserException, IOException,
488 NoSuchAlgorithmException {
489 tagReader.readTag(); // read tag close
490 tagWriter.setOutputStream(new ZLibOutputStream(tagWriter
491 .getOutputStream()));
492 tagReader
493 .setInputStream(new ZLibInputStream(tagReader.getInputStream()));
494
495 sendStartStream();
496 Log.d(Config.LOGTAG, account.getJid() + ": compression enabled");
497 usingCompression = true;
498 processStream(tagReader.readTag());
499 }
500
501 private void sendStartTLS() throws IOException {
502 Tag startTLS = Tag.empty("starttls");
503 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
504 tagWriter.writeTag(startTLS);
505 }
506
507 private void switchOverToTls(Tag currentTag) throws XmlPullParserException,
508 IOException {
509 tagReader.readTag();
510 try {
511 SSLContext sc = SSLContext.getInstance("TLS");
512 sc.init(null,
513 new X509TrustManager[] { this.mMemorizingTrustManager },
514 mRandom);
515 SSLSocketFactory factory = sc.getSocketFactory();
516
517 HostnameVerifier verifier = this.mMemorizingTrustManager
518 .wrapHostnameVerifier(new org.apache.http.conn.ssl.StrictHostnameVerifier());
519 SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,
520 socket.getInetAddress().getHostAddress(), socket.getPort(),
521 true);
522
523 if (verifier != null
524 && !verifier.verify(account.getServer(),
525 sslSocket.getSession())) {
526 Log.d(Config.LOGTAG, account.getJid()
527 + ": host mismatch in TLS connection");
528 sslSocket.close();
529 throw new IOException();
530 }
531 tagReader.setInputStream(sslSocket.getInputStream());
532 tagWriter.setOutputStream(sslSocket.getOutputStream());
533 sendStartStream();
534 Log.d(Config.LOGTAG, account.getJid()
535 + ": TLS connection established");
536 processStream(tagReader.readTag());
537 sslSocket.close();
538 } catch (NoSuchAlgorithmException e1) {
539 e1.printStackTrace();
540 } catch (KeyManagementException e) {
541 e.printStackTrace();
542 }
543 }
544
545 private void sendSaslAuthPlain() throws IOException {
546 String saslString = CryptoHelper.saslPlain(account.getUsername(),
547 account.getPassword());
548 Element auth = new Element("auth");
549 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
550 auth.setAttribute("mechanism", "PLAIN");
551 auth.setContent(saslString);
552 tagWriter.writeElement(auth);
553 }
554
555 private void sendSaslAuthDigestMd5() throws IOException {
556 Element auth = new Element("auth");
557 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
558 auth.setAttribute("mechanism", "DIGEST-MD5");
559 tagWriter.writeElement(auth);
560 }
561
562 private void processStreamFeatures(Tag currentTag)
563 throws XmlPullParserException, IOException {
564 this.streamFeatures = tagReader.readElement(currentTag);
565 if (this.streamFeatures.hasChild("starttls")
566 && account.isOptionSet(Account.OPTION_USETLS)) {
567 sendStartTLS();
568 } else if (compressionAvailable()) {
569 sendCompressionZlib();
570 } else if (this.streamFeatures.hasChild("register")
571 && (account.isOptionSet(Account.OPTION_REGISTER))) {
572 sendRegistryRequest();
573 } else if (!this.streamFeatures.hasChild("register")
574 && (account.isOptionSet(Account.OPTION_REGISTER))) {
575 changeStatus(Account.STATUS_REGISTRATION_NOT_SUPPORTED);
576 disconnect(true);
577 } else if (this.streamFeatures.hasChild("mechanisms")
578 && shouldAuthenticate) {
579 List<String> mechanisms = extractMechanisms(streamFeatures
580 .findChild("mechanisms"));
581 if (mechanisms.contains("PLAIN")) {
582 sendSaslAuthPlain();
583 } else if (mechanisms.contains("DIGEST-MD5")) {
584 sendSaslAuthDigestMd5();
585 }
586 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:"
587 + smVersion)
588 && streamId != null) {
589 ResumePacket resume = new ResumePacket(this.streamId,
590 stanzasReceived, smVersion);
591 this.tagWriter.writeStanzaAsync(resume);
592 } else if (this.streamFeatures.hasChild("bind") && shouldBind) {
593 sendBindRequest();
594 }
595 }
596
597 private boolean compressionAvailable() {
598 if (!this.streamFeatures.hasChild("compression",
599 "http://jabber.org/features/compress"))
600 return false;
601 if (!ZLibOutputStream.SUPPORTED)
602 return false;
603 if (!account.isOptionSet(Account.OPTION_USECOMPRESSION))
604 return false;
605
606 Element compression = this.streamFeatures.findChild("compression",
607 "http://jabber.org/features/compress");
608 for (Element child : compression.getChildren()) {
609 if (!"method".equals(child.getName()))
610 continue;
611
612 if ("zlib".equalsIgnoreCase(child.getContent())) {
613 return true;
614 }
615 }
616 return false;
617 }
618
619 private List<String> extractMechanisms(Element stream) {
620 ArrayList<String> mechanisms = new ArrayList<String>(stream
621 .getChildren().size());
622 for (Element child : stream.getChildren()) {
623 mechanisms.add(child.getContent());
624 }
625 return mechanisms;
626 }
627
628 private void sendRegistryRequest() {
629 IqPacket register = new IqPacket(IqPacket.TYPE_GET);
630 register.query("jabber:iq:register");
631 register.setTo(account.getServer());
632 sendIqPacket(register, new OnIqPacketReceived() {
633
634 @Override
635 public void onIqPacketReceived(Account account, IqPacket packet) {
636 Element instructions = packet.query().findChild("instructions");
637 if (packet.query().hasChild("username")
638 && (packet.query().hasChild("password"))) {
639 IqPacket register = new IqPacket(IqPacket.TYPE_SET);
640 Element username = new Element("username")
641 .setContent(account.getUsername());
642 Element password = new Element("password")
643 .setContent(account.getPassword());
644 register.query("jabber:iq:register").addChild(username);
645 register.query().addChild(password);
646 sendIqPacket(register, new OnIqPacketReceived() {
647
648 @Override
649 public void onIqPacketReceived(Account account,
650 IqPacket packet) {
651 if (packet.getType() == IqPacket.TYPE_RESULT) {
652 account.setOption(Account.OPTION_REGISTER,
653 false);
654 changeStatus(Account.STATUS_REGISTRATION_SUCCESSFULL);
655 } else if (packet.hasChild("error")
656 && (packet.findChild("error")
657 .hasChild("conflict"))) {
658 changeStatus(Account.STATUS_REGISTRATION_CONFLICT);
659 } else {
660 changeStatus(Account.STATUS_REGISTRATION_FAILED);
661 Log.d(Config.LOGTAG, packet.toString());
662 }
663 disconnect(true);
664 }
665 });
666 } else {
667 changeStatus(Account.STATUS_REGISTRATION_FAILED);
668 disconnect(true);
669 Log.d(Config.LOGTAG, account.getJid()
670 + ": could not register. instructions are"
671 + instructions.getContent());
672 }
673 }
674 });
675 }
676
677 private void sendBindRequest() throws IOException {
678 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
679 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
680 .addChild("resource").setContent(account.getResource());
681 this.sendUnboundIqPacket(iq, new OnIqPacketReceived() {
682 @Override
683 public void onIqPacketReceived(Account account, IqPacket packet) {
684 Element bind = packet.findChild("bind");
685 if (bind != null) {
686 Element jid = bind.findChild("jid");
687 if (jid != null && jid.getContent() != null) {
688 account.setResource(jid.getContent().split("/", 2)[1]);
689 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
690 smVersion = 3;
691 EnablePacket enable = new EnablePacket(smVersion);
692 tagWriter.writeStanzaAsync(enable);
693 stanzasSent = 0;
694 messageReceipts.clear();
695 } else if (streamFeatures.hasChild("sm",
696 "urn:xmpp:sm:2")) {
697 smVersion = 2;
698 EnablePacket enable = new EnablePacket(smVersion);
699 tagWriter.writeStanzaAsync(enable);
700 stanzasSent = 0;
701 messageReceipts.clear();
702 }
703 sendServiceDiscoveryInfo(account.getServer());
704 sendServiceDiscoveryItems(account.getServer());
705 if (bindListener != null) {
706 bindListener.onBind(account);
707 }
708 sendInitialPing();
709 } else {
710 disconnect(true);
711 }
712 } else {
713 disconnect(true);
714 }
715 }
716 });
717 if (this.streamFeatures.hasChild("session")) {
718 Log.d(Config.LOGTAG, account.getJid()
719 + ": sending deprecated session");
720 IqPacket startSession = new IqPacket(IqPacket.TYPE_SET);
721 startSession.addChild("session",
722 "urn:ietf:params:xml:ns:xmpp-session");
723 this.sendUnboundIqPacket(startSession, null);
724 }
725 }
726
727 private void sendServiceDiscoveryInfo(final String server) {
728 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
729 iq.setTo(server);
730 iq.query("http://jabber.org/protocol/disco#info");
731 this.sendIqPacket(iq, new OnIqPacketReceived() {
732
733 @Override
734 public void onIqPacketReceived(Account account, IqPacket packet) {
735 List<Element> elements = packet.query().getChildren();
736 List<String> features = new ArrayList<String>();
737 for (int i = 0; i < elements.size(); ++i) {
738 if (elements.get(i).getName().equals("feature")) {
739 features.add(elements.get(i).getAttribute("var"));
740 }
741 }
742 disco.put(server, features);
743
744 if (account.getServer().equals(server)) {
745 enableAdvancedStreamFeatures();
746 }
747 }
748 });
749 }
750
751 private void enableAdvancedStreamFeatures() {
752 if (getFeatures().carbons()) {
753 sendEnableCarbons();
754 }
755 }
756
757 private void sendServiceDiscoveryItems(final String server) {
758 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
759 iq.setTo(server);
760 iq.query("http://jabber.org/protocol/disco#items");
761 this.sendIqPacket(iq, new OnIqPacketReceived() {
762
763 @Override
764 public void onIqPacketReceived(Account account, IqPacket packet) {
765 List<Element> elements = packet.query().getChildren();
766 for (int i = 0; i < elements.size(); ++i) {
767 if (elements.get(i).getName().equals("item")) {
768 String jid = elements.get(i).getAttribute("jid");
769 sendServiceDiscoveryInfo(jid);
770 }
771 }
772 }
773 });
774 }
775
776 private void sendEnableCarbons() {
777 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
778 iq.addChild("enable", "urn:xmpp:carbons:2");
779 this.sendIqPacket(iq, new OnIqPacketReceived() {
780
781 @Override
782 public void onIqPacketReceived(Account account, IqPacket packet) {
783 if (!packet.hasChild("error")) {
784 Log.d(Config.LOGTAG, account.getJid()
785 + ": successfully enabled carbons");
786 } else {
787 Log.d(Config.LOGTAG, account.getJid()
788 + ": error enableing carbons " + packet.toString());
789 }
790 }
791 });
792 }
793
794 private void processStreamError(Tag currentTag)
795 throws XmlPullParserException, IOException {
796 Element streamError = tagReader.readElement(currentTag);
797 if (streamError != null && streamError.hasChild("conflict")) {
798 String resource = account.getResource().split("\\.")[0];
799 account.setResource(resource + "." + nextRandomId());
800 Log.d(Config.LOGTAG,
801 account.getJid() + ": switching resource due to conflict ("
802 + account.getResource() + ")");
803 }
804 }
805
806 private void sendStartStream() throws IOException {
807 Tag stream = Tag.start("stream:stream");
808 stream.setAttribute("from", account.getJid());
809 stream.setAttribute("to", account.getServer());
810 stream.setAttribute("version", "1.0");
811 stream.setAttribute("xml:lang", "en");
812 stream.setAttribute("xmlns", "jabber:client");
813 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
814 tagWriter.writeTag(stream);
815 }
816
817 private String nextRandomId() {
818 return new BigInteger(50, mRandom).toString(32);
819 }
820
821 public void sendIqPacket(IqPacket packet, OnIqPacketReceived callback) {
822 if (packet.getId() == null) {
823 String id = nextRandomId();
824 packet.setAttribute("id", id);
825 }
826 packet.setFrom(account.getFullJid());
827 this.sendPacket(packet, callback);
828 }
829
830 public void sendUnboundIqPacket(IqPacket packet, OnIqPacketReceived callback) {
831 if (packet.getId() == null) {
832 String id = nextRandomId();
833 packet.setAttribute("id", id);
834 }
835 this.sendPacket(packet, callback);
836 }
837
838 public void sendMessagePacket(MessagePacket packet) {
839 this.sendPacket(packet, null);
840 }
841
842 public void sendPresencePacket(PresencePacket packet) {
843 this.sendPacket(packet, null);
844 }
845
846 private synchronized void sendPacket(final AbstractStanza packet,
847 PacketReceived callback) {
848 if (packet.getName().equals("iq") || packet.getName().equals("message")
849 || packet.getName().equals("presence")) {
850 ++stanzasSent;
851 }
852 tagWriter.writeStanzaAsync(packet);
853 if (packet instanceof MessagePacket && packet.getId() != null
854 && this.streamId != null) {
855 Log.d(Config.LOGTAG, "request delivery report for stanza "
856 + stanzasSent);
857 this.messageReceipts.put(stanzasSent, packet.getId());
858 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
859 }
860 if (callback != null) {
861 if (packet.getId() == null) {
862 packet.setId(nextRandomId());
863 }
864 packetCallbacks.put(packet.getId(), callback);
865 }
866 }
867
868 public void sendPing() {
869 if (streamFeatures.hasChild("sm")) {
870 tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
871 } else {
872 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
873 iq.setFrom(account.getFullJid());
874 iq.addChild("ping", "urn:xmpp:ping");
875 this.sendIqPacket(iq, null);
876 }
877 this.lastPingSent = SystemClock.elapsedRealtime();
878 }
879
880 public void setOnMessagePacketReceivedListener(
881 OnMessagePacketReceived listener) {
882 this.messageListener = listener;
883 }
884
885 public void setOnUnregisteredIqPacketReceivedListener(
886 OnIqPacketReceived listener) {
887 this.unregisteredIqListener = listener;
888 }
889
890 public void setOnPresencePacketReceivedListener(
891 OnPresencePacketReceived listener) {
892 this.presenceListener = listener;
893 }
894
895 public void setOnJinglePacketReceivedListener(
896 OnJinglePacketReceived listener) {
897 this.jingleListener = listener;
898 }
899
900 public void setOnStatusChangedListener(OnStatusChanged listener) {
901 this.statusListener = listener;
902 }
903
904 public void setOnBindListener(OnBindListener listener) {
905 this.bindListener = listener;
906 }
907
908 public void setOnMessageAcknowledgeListener(OnMessageAcknowledged listener) {
909 this.acknowledgedListener = listener;
910 }
911
912 public void disconnect(boolean force) {
913 Log.d(Config.LOGTAG, account.getJid()+": disconnecting");
914 try {
915 if (force) {
916 socket.close();
917 return;
918 }
919 new Thread(new Runnable() {
920
921 @Override
922 public void run() {
923 if (tagWriter.isActive()) {
924 tagWriter.finish();
925 try {
926 while (!tagWriter.finished()) {
927 Log.d(Config.LOGTAG, "not yet finished");
928 Thread.sleep(100);
929 }
930 tagWriter.writeTag(Tag.end("stream:stream"));
931 socket.close();
932 } catch (IOException e) {
933 Log.d(Config.LOGTAG,
934 "io exception during disconnect");
935 } catch (InterruptedException e) {
936 Log.d(Config.LOGTAG, "interrupted");
937 }
938 }
939 }
940 }).start();
941 } catch (IOException e) {
942 Log.d(Config.LOGTAG, "io exception during disconnect");
943 }
944 }
945
946 public List<String> findDiscoItemsByFeature(String feature) {
947 List<String> items = new ArrayList<String>();
948 for (Entry<String, List<String>> cursor : disco.entrySet()) {
949 if (cursor.getValue().contains(feature)) {
950 items.add(cursor.getKey());
951 }
952 }
953 return items;
954 }
955
956 public String findDiscoItemByFeature(String feature) {
957 List<String> items = findDiscoItemsByFeature(feature);
958 if (items.size() >= 1) {
959 return items.get(0);
960 }
961 return null;
962 }
963
964 public void r() {
965 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
966 }
967
968 public String getMucServer() {
969 return findDiscoItemByFeature("http://jabber.org/protocol/muc");
970 }
971
972 public int getTimeToNextAttempt() {
973 int interval = (int) (25 * Math.pow(1.5, attempt));
974 int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
975 return interval - secondsSinceLast;
976 }
977
978 public int getAttempt() {
979 return this.attempt;
980 }
981
982 public Features getFeatures() {
983 return this.features;
984 }
985
986 public class Features {
987 XmppConnection connection;
988
989 public Features(XmppConnection connection) {
990 this.connection = connection;
991 }
992
993 private boolean hasDiscoFeature(String server, String feature) {
994 if (!connection.disco.containsKey(server)) {
995 return false;
996 }
997 return connection.disco.get(server).contains(feature);
998 }
999
1000 public boolean carbons() {
1001 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
1002 }
1003
1004 public boolean sm() {
1005 return streamId != null;
1006 }
1007
1008 public boolean csi() {
1009 if (connection.streamFeatures == null) {
1010 return false;
1011 } else {
1012 return connection.streamFeatures.hasChild("csi",
1013 "urn:xmpp:csi:0");
1014 }
1015 }
1016
1017 public boolean pubsub() {
1018 return hasDiscoFeature(account.getServer(),
1019 "http://jabber.org/protocol/pubsub#publish");
1020 }
1021
1022 public boolean rosterVersioning() {
1023 if (connection.streamFeatures == null) {
1024 return false;
1025 } else {
1026 return connection.streamFeatures.hasChild("ver");
1027 }
1028 }
1029
1030 public boolean streamhost() {
1031 return connection
1032 .findDiscoItemByFeature("http://jabber.org/protocol/bytestreams") != null;
1033 }
1034
1035 public boolean compression() {
1036 return connection.usingCompression;
1037 }
1038 }
1039
1040 public long getLastSessionEstablished() {
1041 long diff;
1042 if (this.lastSessionStarted == 0) {
1043 diff = SystemClock.elapsedRealtime() - this.lastConnect;
1044 } else {
1045 diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1046 }
1047 return System.currentTimeMillis() - diff;
1048 }
1049
1050 public long getLastConnect() {
1051 return this.lastConnect;
1052 }
1053
1054 public long getLastPingSent() {
1055 return this.lastPingSent;
1056 }
1057
1058 public long getLastPacketReceived() {
1059 return this.lastPaketReceived;
1060 }
1061
1062 public void sendActive() {
1063 this.sendPacket(new ActivePacket(), null);
1064 }
1065
1066 public void sendInactive() {
1067 this.sendPacket(new InactivePacket(), null);
1068 }
1069}