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