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 sslSocket.setEnabledProtocols(sslSocket.getSupportedProtocols());
523
524 if (verifier != null
525 && !verifier.verify(account.getServer(),
526 sslSocket.getSession())) {
527 Log.d(Config.LOGTAG, account.getJid()
528 + ": host mismatch in TLS connection");
529 sslSocket.close();
530 throw new IOException();
531 }
532 tagReader.setInputStream(sslSocket.getInputStream());
533 tagWriter.setOutputStream(sslSocket.getOutputStream());
534 sendStartStream();
535 Log.d(Config.LOGTAG, account.getJid()
536 + ": TLS connection established");
537 processStream(tagReader.readTag());
538 sslSocket.close();
539 } catch (NoSuchAlgorithmException e1) {
540 e1.printStackTrace();
541 } catch (KeyManagementException e) {
542 e.printStackTrace();
543 }
544 }
545
546 private void sendSaslAuthPlain() throws IOException {
547 String saslString = CryptoHelper.saslPlain(account.getUsername(),
548 account.getPassword());
549 Element auth = new Element("auth");
550 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
551 auth.setAttribute("mechanism", "PLAIN");
552 auth.setContent(saslString);
553 tagWriter.writeElement(auth);
554 }
555
556 private void sendSaslAuthDigestMd5() throws IOException {
557 Element auth = new Element("auth");
558 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
559 auth.setAttribute("mechanism", "DIGEST-MD5");
560 tagWriter.writeElement(auth);
561 }
562
563 private void processStreamFeatures(Tag currentTag)
564 throws XmlPullParserException, IOException {
565 this.streamFeatures = tagReader.readElement(currentTag);
566 if (this.streamFeatures.hasChild("starttls")
567 && account.isOptionSet(Account.OPTION_USETLS)) {
568 sendStartTLS();
569 } else if (compressionAvailable()) {
570 sendCompressionZlib();
571 } else if (this.streamFeatures.hasChild("register")
572 && (account.isOptionSet(Account.OPTION_REGISTER))) {
573 sendRegistryRequest();
574 } else if (!this.streamFeatures.hasChild("register")
575 && (account.isOptionSet(Account.OPTION_REGISTER))) {
576 changeStatus(Account.STATUS_REGISTRATION_NOT_SUPPORTED);
577 disconnect(true);
578 } else if (this.streamFeatures.hasChild("mechanisms")
579 && shouldAuthenticate) {
580 List<String> mechanisms = extractMechanisms(streamFeatures
581 .findChild("mechanisms"));
582 if (mechanisms.contains("PLAIN")) {
583 sendSaslAuthPlain();
584 } else if (mechanisms.contains("DIGEST-MD5")) {
585 sendSaslAuthDigestMd5();
586 }
587 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:"
588 + smVersion)
589 && streamId != null) {
590 ResumePacket resume = new ResumePacket(this.streamId,
591 stanzasReceived, smVersion);
592 this.tagWriter.writeStanzaAsync(resume);
593 } else if (this.streamFeatures.hasChild("bind") && shouldBind) {
594 sendBindRequest();
595 }
596 }
597
598 private boolean compressionAvailable() {
599 if (!this.streamFeatures.hasChild("compression",
600 "http://jabber.org/features/compress"))
601 return false;
602 if (!ZLibOutputStream.SUPPORTED)
603 return false;
604 if (!account.isOptionSet(Account.OPTION_USECOMPRESSION))
605 return false;
606
607 Element compression = this.streamFeatures.findChild("compression",
608 "http://jabber.org/features/compress");
609 for (Element child : compression.getChildren()) {
610 if (!"method".equals(child.getName()))
611 continue;
612
613 if ("zlib".equalsIgnoreCase(child.getContent())) {
614 return true;
615 }
616 }
617 return false;
618 }
619
620 private List<String> extractMechanisms(Element stream) {
621 ArrayList<String> mechanisms = new ArrayList<String>(stream
622 .getChildren().size());
623 for (Element child : stream.getChildren()) {
624 mechanisms.add(child.getContent());
625 }
626 return mechanisms;
627 }
628
629 private void sendRegistryRequest() {
630 IqPacket register = new IqPacket(IqPacket.TYPE_GET);
631 register.query("jabber:iq:register");
632 register.setTo(account.getServer());
633 sendIqPacket(register, new OnIqPacketReceived() {
634
635 @Override
636 public void onIqPacketReceived(Account account, IqPacket packet) {
637 Element instructions = packet.query().findChild("instructions");
638 if (packet.query().hasChild("username")
639 && (packet.query().hasChild("password"))) {
640 IqPacket register = new IqPacket(IqPacket.TYPE_SET);
641 Element username = new Element("username")
642 .setContent(account.getUsername());
643 Element password = new Element("password")
644 .setContent(account.getPassword());
645 register.query("jabber:iq:register").addChild(username);
646 register.query().addChild(password);
647 sendIqPacket(register, new OnIqPacketReceived() {
648
649 @Override
650 public void onIqPacketReceived(Account account,
651 IqPacket packet) {
652 if (packet.getType() == IqPacket.TYPE_RESULT) {
653 account.setOption(Account.OPTION_REGISTER,
654 false);
655 changeStatus(Account.STATUS_REGISTRATION_SUCCESSFULL);
656 } else if (packet.hasChild("error")
657 && (packet.findChild("error")
658 .hasChild("conflict"))) {
659 changeStatus(Account.STATUS_REGISTRATION_CONFLICT);
660 } else {
661 changeStatus(Account.STATUS_REGISTRATION_FAILED);
662 Log.d(Config.LOGTAG, packet.toString());
663 }
664 disconnect(true);
665 }
666 });
667 } else {
668 changeStatus(Account.STATUS_REGISTRATION_FAILED);
669 disconnect(true);
670 Log.d(Config.LOGTAG, account.getJid()
671 + ": could not register. instructions are"
672 + instructions.getContent());
673 }
674 }
675 });
676 }
677
678 private void sendBindRequest() throws IOException {
679 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
680 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
681 .addChild("resource").setContent(account.getResource());
682 this.sendUnboundIqPacket(iq, new OnIqPacketReceived() {
683 @Override
684 public void onIqPacketReceived(Account account, IqPacket packet) {
685 Element bind = packet.findChild("bind");
686 if (bind != null) {
687 Element jid = bind.findChild("jid");
688 if (jid != null && jid.getContent() != null) {
689 account.setResource(jid.getContent().split("/", 2)[1]);
690 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
691 smVersion = 3;
692 EnablePacket enable = new EnablePacket(smVersion);
693 tagWriter.writeStanzaAsync(enable);
694 stanzasSent = 0;
695 messageReceipts.clear();
696 } else if (streamFeatures.hasChild("sm",
697 "urn:xmpp:sm:2")) {
698 smVersion = 2;
699 EnablePacket enable = new EnablePacket(smVersion);
700 tagWriter.writeStanzaAsync(enable);
701 stanzasSent = 0;
702 messageReceipts.clear();
703 }
704 sendServiceDiscoveryInfo(account.getServer());
705 sendServiceDiscoveryItems(account.getServer());
706 if (bindListener != null) {
707 bindListener.onBind(account);
708 }
709 sendInitialPing();
710 } else {
711 disconnect(true);
712 }
713 } else {
714 disconnect(true);
715 }
716 }
717 });
718 if (this.streamFeatures.hasChild("session")) {
719 Log.d(Config.LOGTAG, account.getJid()
720 + ": sending deprecated session");
721 IqPacket startSession = new IqPacket(IqPacket.TYPE_SET);
722 startSession.addChild("session",
723 "urn:ietf:params:xml:ns:xmpp-session");
724 this.sendUnboundIqPacket(startSession, null);
725 }
726 }
727
728 private void sendServiceDiscoveryInfo(final String server) {
729 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
730 iq.setTo(server);
731 iq.query("http://jabber.org/protocol/disco#info");
732 this.sendIqPacket(iq, new OnIqPacketReceived() {
733
734 @Override
735 public void onIqPacketReceived(Account account, IqPacket packet) {
736 List<Element> elements = packet.query().getChildren();
737 List<String> features = new ArrayList<String>();
738 for (int i = 0; i < elements.size(); ++i) {
739 if (elements.get(i).getName().equals("feature")) {
740 features.add(elements.get(i).getAttribute("var"));
741 }
742 }
743 disco.put(server, features);
744
745 if (account.getServer().equals(server)) {
746 enableAdvancedStreamFeatures();
747 }
748 }
749 });
750 }
751
752 private void enableAdvancedStreamFeatures() {
753 if (getFeatures().carbons()) {
754 sendEnableCarbons();
755 }
756 }
757
758 private void sendServiceDiscoveryItems(final String server) {
759 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
760 iq.setTo(server);
761 iq.query("http://jabber.org/protocol/disco#items");
762 this.sendIqPacket(iq, new OnIqPacketReceived() {
763
764 @Override
765 public void onIqPacketReceived(Account account, IqPacket packet) {
766 List<Element> elements = packet.query().getChildren();
767 for (int i = 0; i < elements.size(); ++i) {
768 if (elements.get(i).getName().equals("item")) {
769 String jid = elements.get(i).getAttribute("jid");
770 sendServiceDiscoveryInfo(jid);
771 }
772 }
773 }
774 });
775 }
776
777 private void sendEnableCarbons() {
778 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
779 iq.addChild("enable", "urn:xmpp:carbons:2");
780 this.sendIqPacket(iq, new OnIqPacketReceived() {
781
782 @Override
783 public void onIqPacketReceived(Account account, IqPacket packet) {
784 if (!packet.hasChild("error")) {
785 Log.d(Config.LOGTAG, account.getJid()
786 + ": successfully enabled carbons");
787 } else {
788 Log.d(Config.LOGTAG, account.getJid()
789 + ": error enableing carbons " + packet.toString());
790 }
791 }
792 });
793 }
794
795 private void processStreamError(Tag currentTag)
796 throws XmlPullParserException, IOException {
797 Element streamError = tagReader.readElement(currentTag);
798 if (streamError != null && streamError.hasChild("conflict")) {
799 String resource = account.getResource().split("\\.")[0];
800 account.setResource(resource + "." + nextRandomId());
801 Log.d(Config.LOGTAG,
802 account.getJid() + ": switching resource due to conflict ("
803 + account.getResource() + ")");
804 }
805 }
806
807 private void sendStartStream() throws IOException {
808 Tag stream = Tag.start("stream:stream");
809 stream.setAttribute("from", account.getJid());
810 stream.setAttribute("to", account.getServer());
811 stream.setAttribute("version", "1.0");
812 stream.setAttribute("xml:lang", "en");
813 stream.setAttribute("xmlns", "jabber:client");
814 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
815 tagWriter.writeTag(stream);
816 }
817
818 private String nextRandomId() {
819 return new BigInteger(50, mRandom).toString(32);
820 }
821
822 public void sendIqPacket(IqPacket packet, OnIqPacketReceived callback) {
823 if (packet.getId() == null) {
824 String id = nextRandomId();
825 packet.setAttribute("id", id);
826 }
827 packet.setFrom(account.getFullJid());
828 this.sendPacket(packet, callback);
829 }
830
831 public void sendUnboundIqPacket(IqPacket packet, OnIqPacketReceived callback) {
832 if (packet.getId() == null) {
833 String id = nextRandomId();
834 packet.setAttribute("id", id);
835 }
836 this.sendPacket(packet, callback);
837 }
838
839 public void sendMessagePacket(MessagePacket packet) {
840 this.sendPacket(packet, null);
841 }
842
843 public void sendPresencePacket(PresencePacket packet) {
844 this.sendPacket(packet, null);
845 }
846
847 private synchronized void sendPacket(final AbstractStanza packet,
848 PacketReceived callback) {
849 if (packet.getName().equals("iq") || packet.getName().equals("message")
850 || packet.getName().equals("presence")) {
851 ++stanzasSent;
852 }
853 tagWriter.writeStanzaAsync(packet);
854 if (packet instanceof MessagePacket && packet.getId() != null
855 && this.streamId != null) {
856 Log.d(Config.LOGTAG, "request delivery report for stanza "
857 + stanzasSent);
858 this.messageReceipts.put(stanzasSent, packet.getId());
859 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
860 }
861 if (callback != null) {
862 if (packet.getId() == null) {
863 packet.setId(nextRandomId());
864 }
865 packetCallbacks.put(packet.getId(), callback);
866 }
867 }
868
869 public void sendPing() {
870 if (streamFeatures.hasChild("sm")) {
871 tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
872 } else {
873 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
874 iq.setFrom(account.getFullJid());
875 iq.addChild("ping", "urn:xmpp:ping");
876 this.sendIqPacket(iq, null);
877 }
878 this.lastPingSent = SystemClock.elapsedRealtime();
879 }
880
881 public void setOnMessagePacketReceivedListener(
882 OnMessagePacketReceived listener) {
883 this.messageListener = listener;
884 }
885
886 public void setOnUnregisteredIqPacketReceivedListener(
887 OnIqPacketReceived listener) {
888 this.unregisteredIqListener = listener;
889 }
890
891 public void setOnPresencePacketReceivedListener(
892 OnPresencePacketReceived listener) {
893 this.presenceListener = listener;
894 }
895
896 public void setOnJinglePacketReceivedListener(
897 OnJinglePacketReceived listener) {
898 this.jingleListener = listener;
899 }
900
901 public void setOnStatusChangedListener(OnStatusChanged listener) {
902 this.statusListener = listener;
903 }
904
905 public void setOnBindListener(OnBindListener listener) {
906 this.bindListener = listener;
907 }
908
909 public void setOnMessageAcknowledgeListener(OnMessageAcknowledged listener) {
910 this.acknowledgedListener = listener;
911 }
912
913 public void disconnect(boolean force) {
914 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting");
915 try {
916 if (force) {
917 socket.close();
918 return;
919 }
920 new Thread(new Runnable() {
921
922 @Override
923 public void run() {
924 if (tagWriter.isActive()) {
925 tagWriter.finish();
926 try {
927 while (!tagWriter.finished()) {
928 Log.d(Config.LOGTAG, "not yet finished");
929 Thread.sleep(100);
930 }
931 tagWriter.writeTag(Tag.end("stream:stream"));
932 socket.close();
933 } catch (IOException e) {
934 Log.d(Config.LOGTAG,
935 "io exception during disconnect");
936 } catch (InterruptedException e) {
937 Log.d(Config.LOGTAG, "interrupted");
938 }
939 }
940 }
941 }).start();
942 } catch (IOException e) {
943 Log.d(Config.LOGTAG, "io exception during disconnect");
944 }
945 }
946
947 public List<String> findDiscoItemsByFeature(String feature) {
948 List<String> items = new ArrayList<String>();
949 for (Entry<String, List<String>> cursor : disco.entrySet()) {
950 if (cursor.getValue().contains(feature)) {
951 items.add(cursor.getKey());
952 }
953 }
954 return items;
955 }
956
957 public String findDiscoItemByFeature(String feature) {
958 List<String> items = findDiscoItemsByFeature(feature);
959 if (items.size() >= 1) {
960 return items.get(0);
961 }
962 return null;
963 }
964
965 public void r() {
966 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
967 }
968
969 public String getMucServer() {
970 return findDiscoItemByFeature("http://jabber.org/protocol/muc");
971 }
972
973 public int getTimeToNextAttempt() {
974 int interval = (int) (25 * Math.pow(1.5, attempt));
975 int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
976 return interval - secondsSinceLast;
977 }
978
979 public int getAttempt() {
980 return this.attempt;
981 }
982
983 public Features getFeatures() {
984 return this.features;
985 }
986
987 public class Features {
988 XmppConnection connection;
989
990 public Features(XmppConnection connection) {
991 this.connection = connection;
992 }
993
994 private boolean hasDiscoFeature(String server, String feature) {
995 if (!connection.disco.containsKey(server)) {
996 return false;
997 }
998 return connection.disco.get(server).contains(feature);
999 }
1000
1001 public boolean carbons() {
1002 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
1003 }
1004
1005 public boolean sm() {
1006 return streamId != null;
1007 }
1008
1009 public boolean csi() {
1010 if (connection.streamFeatures == null) {
1011 return false;
1012 } else {
1013 return connection.streamFeatures.hasChild("csi",
1014 "urn:xmpp:csi:0");
1015 }
1016 }
1017
1018 public boolean pubsub() {
1019 return hasDiscoFeature(account.getServer(),
1020 "http://jabber.org/protocol/pubsub#publish");
1021 }
1022
1023 public boolean rosterVersioning() {
1024 if (connection.streamFeatures == null) {
1025 return false;
1026 } else {
1027 return connection.streamFeatures.hasChild("ver");
1028 }
1029 }
1030
1031 public boolean streamhost() {
1032 return connection
1033 .findDiscoItemByFeature("http://jabber.org/protocol/bytestreams") != null;
1034 }
1035
1036 public boolean compression() {
1037 return connection.usingCompression;
1038 }
1039 }
1040
1041 public long getLastSessionEstablished() {
1042 long diff;
1043 if (this.lastSessionStarted == 0) {
1044 diff = SystemClock.elapsedRealtime() - this.lastConnect;
1045 } else {
1046 diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1047 }
1048 return System.currentTimeMillis() - diff;
1049 }
1050
1051 public long getLastConnect() {
1052 return this.lastConnect;
1053 }
1054
1055 public long getLastPingSent() {
1056 return this.lastPingSent;
1057 }
1058
1059 public long getLastPacketReceived() {
1060 return this.lastPaketReceived;
1061 }
1062
1063 public void sendActive() {
1064 this.sendPacket(new ActivePacket(), null);
1065 }
1066
1067 public void sendInactive() {
1068 this.sendPacket(new InactivePacket(), null);
1069 }
1070}