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 boolean socketError = true;
165 int srvIndex = 0;
166 while (socketError && namePort.containsKey("name" + srvIndex)){
167 try {
168 srvRecordServer = namePort.getString("name" + srvIndex);
169 srvRecordPort = namePort.getInt("port" + srvIndex);
170 Log.d(Config.LOGTAG, account.getJid()
171 + ": using values from dns " + srvRecordServer
172 + ":" + srvRecordPort);
173 socket = new Socket(srvRecordServer, srvRecordPort);
174 socketError = false;
175 } catch (UnknownHostException e) {
176 srvIndex++;
177 } catch (IOException e) {
178 srvIndex++;
179 }
180 }
181 }
182 } else if (namePort.containsKey("error")
183 && "nosrv".equals(namePort.getString("error", null))) {
184 socket = new Socket(account.getServer(), 5222);
185 } else {
186 Log.d(Config.LOGTAG, account.getJid()
187 + ": timeout in DNS resolution");
188 changeStatus(Account.STATUS_OFFLINE);
189 return;
190 }
191 OutputStream out = socket.getOutputStream();
192 tagWriter.setOutputStream(out);
193 InputStream in = socket.getInputStream();
194 tagReader.setInputStream(in);
195 tagWriter.beginDocument();
196 sendStartStream();
197 Tag nextTag;
198 while ((nextTag = tagReader.readTag()) != null) {
199 if (nextTag.isStart("stream")) {
200 processStream(nextTag);
201 break;
202 } else {
203 Log.d(Config.LOGTAG,
204 "found unexpected tag: " + nextTag.getName());
205 return;
206 }
207 }
208 if (socket.isConnected()) {
209 socket.close();
210 }
211 } catch (UnknownHostException e) {
212 this.changeStatus(Account.STATUS_SERVER_NOT_FOUND);
213 if (wakeLock.isHeld()) {
214 try {
215 wakeLock.release();
216 } catch (RuntimeException re) {
217 }
218 }
219 return;
220 } catch (IOException e) {
221 this.changeStatus(Account.STATUS_OFFLINE);
222 if (wakeLock.isHeld()) {
223 try {
224 wakeLock.release();
225 } catch (RuntimeException re) {
226 }
227 }
228 return;
229 } catch (NoSuchAlgorithmException e) {
230 this.changeStatus(Account.STATUS_OFFLINE);
231 Log.d(Config.LOGTAG, "compression exception " + e.getMessage());
232 if (wakeLock.isHeld()) {
233 try {
234 wakeLock.release();
235 } catch (RuntimeException re) {
236 }
237 }
238 return;
239 } catch (XmlPullParserException e) {
240 this.changeStatus(Account.STATUS_OFFLINE);
241 Log.d(Config.LOGTAG, "xml exception " + e.getMessage());
242 if (wakeLock.isHeld()) {
243 try {
244 wakeLock.release();
245 } catch (RuntimeException re) {
246 }
247 }
248 return;
249 }
250
251 }
252
253 @Override
254 public void run() {
255 connect();
256 }
257
258 private void processStream(Tag currentTag) throws XmlPullParserException,
259 IOException, NoSuchAlgorithmException {
260 Tag nextTag = tagReader.readTag();
261 while ((nextTag != null) && (!nextTag.isEnd("stream"))) {
262 if (nextTag.isStart("error")) {
263 processStreamError(nextTag);
264 } else if (nextTag.isStart("features")) {
265 processStreamFeatures(nextTag);
266 } else if (nextTag.isStart("proceed")) {
267 switchOverToTls(nextTag);
268 } else if (nextTag.isStart("compressed")) {
269 switchOverToZLib(nextTag);
270 } else if (nextTag.isStart("success")) {
271 Log.d(Config.LOGTAG, account.getJid() + ": logged in");
272 tagReader.readTag();
273 tagReader.reset();
274 sendStartStream();
275 processStream(tagReader.readTag());
276 break;
277 } else if (nextTag.isStart("failure")) {
278 tagReader.readElement(nextTag);
279 changeStatus(Account.STATUS_UNAUTHORIZED);
280 } else if (nextTag.isStart("challenge")) {
281 String challange = tagReader.readElement(nextTag).getContent();
282 Element response = new Element("response");
283 response.setAttribute("xmlns",
284 "urn:ietf:params:xml:ns:xmpp-sasl");
285 response.setContent(CryptoHelper.saslDigestMd5(account,
286 challange, mRandom));
287 tagWriter.writeElement(response);
288 } else if (nextTag.isStart("enabled")) {
289 Element enabled = tagReader.readElement(nextTag);
290 if ("true".equals(enabled.getAttribute("resume"))) {
291 this.streamId = enabled.getAttribute("id");
292 Log.d(Config.LOGTAG, account.getJid()
293 + ": stream managment(" + smVersion
294 + ") enabled (resumable)");
295 } else {
296 Log.d(Config.LOGTAG, account.getJid()
297 + ": stream managment(" + smVersion + ") enabled");
298 }
299 this.lastSessionStarted = SystemClock.elapsedRealtime();
300 this.stanzasReceived = 0;
301 RequestPacket r = new RequestPacket(smVersion);
302 tagWriter.writeStanzaAsync(r);
303 } else if (nextTag.isStart("resumed")) {
304 lastPaketReceived = SystemClock.elapsedRealtime();
305 Element resumed = tagReader.readElement(nextTag);
306 String h = resumed.getAttribute("h");
307 try {
308 int serverCount = Integer.parseInt(h);
309 if (serverCount != stanzasSent) {
310 Log.d(Config.LOGTAG, account.getJid()
311 + ": session resumed with lost packages");
312 stanzasSent = serverCount;
313 } else {
314 Log.d(Config.LOGTAG, account.getJid()
315 + ": session resumed");
316 }
317 if (acknowledgedListener != null) {
318 for (int i = 0; i < messageReceipts.size(); ++i) {
319 if (serverCount >= messageReceipts.keyAt(i)) {
320 acknowledgedListener.onMessageAcknowledged(
321 account, messageReceipts.valueAt(i));
322 }
323 }
324 }
325 messageReceipts.clear();
326 } catch (NumberFormatException e) {
327
328 }
329 sendInitialPing();
330
331 } else if (nextTag.isStart("r")) {
332 tagReader.readElement(nextTag);
333 AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
334 tagWriter.writeStanzaAsync(ack);
335 } else if (nextTag.isStart("a")) {
336 Element ack = tagReader.readElement(nextTag);
337 lastPaketReceived = SystemClock.elapsedRealtime();
338 int serverSequence = Integer.parseInt(ack.getAttribute("h"));
339 String msgId = this.messageReceipts.get(serverSequence);
340 if (msgId != null) {
341 if (this.acknowledgedListener != null) {
342 this.acknowledgedListener.onMessageAcknowledged(
343 account, msgId);
344 }
345 this.messageReceipts.remove(serverSequence);
346 }
347 } else if (nextTag.isStart("failed")) {
348 tagReader.readElement(nextTag);
349 Log.d(Config.LOGTAG, account.getJid() + ": resumption failed");
350 streamId = null;
351 if (account.getStatus() != Account.STATUS_ONLINE) {
352 sendBindRequest();
353 }
354 } else if (nextTag.isStart("iq")) {
355 processIq(nextTag);
356 } else if (nextTag.isStart("message")) {
357 processMessage(nextTag);
358 } else if (nextTag.isStart("presence")) {
359 processPresence(nextTag);
360 }
361 nextTag = tagReader.readTag();
362 }
363 if (account.getStatus() == Account.STATUS_ONLINE) {
364 account.setStatus(Account.STATUS_OFFLINE);
365 if (statusListener != null) {
366 statusListener.onStatusChanged(account);
367 }
368 }
369 }
370
371 private void sendInitialPing() {
372 Log.d(Config.LOGTAG, account.getJid() + ": sending intial ping");
373 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
374 iq.setFrom(account.getFullJid());
375 iq.addChild("ping", "urn:xmpp:ping");
376 this.sendIqPacket(iq, new OnIqPacketReceived() {
377
378 @Override
379 public void onIqPacketReceived(Account account, IqPacket packet) {
380 Log.d(Config.LOGTAG, account.getJid()
381 + ": online with resource " + account.getResource());
382 changeStatus(Account.STATUS_ONLINE);
383 }
384 });
385 }
386
387 private Element processPacket(Tag currentTag, int packetType)
388 throws XmlPullParserException, IOException {
389 Element element;
390 switch (packetType) {
391 case PACKET_IQ:
392 element = new IqPacket();
393 break;
394 case PACKET_MESSAGE:
395 element = new MessagePacket();
396 break;
397 case PACKET_PRESENCE:
398 element = new PresencePacket();
399 break;
400 default:
401 return null;
402 }
403 element.setAttributes(currentTag.getAttributes());
404 Tag nextTag = tagReader.readTag();
405 if (nextTag == null) {
406 throw new IOException("interrupted mid tag");
407 }
408 while (!nextTag.isEnd(element.getName())) {
409 if (!nextTag.isNo()) {
410 Element child = tagReader.readElement(nextTag);
411 String type = currentTag.getAttribute("type");
412 if (packetType == PACKET_IQ
413 && "jingle".equals(child.getName())
414 && ("set".equalsIgnoreCase(type) || "get"
415 .equalsIgnoreCase(type))) {
416 element = new JinglePacket();
417 element.setAttributes(currentTag.getAttributes());
418 }
419 element.addChild(child);
420 }
421 nextTag = tagReader.readTag();
422 if (nextTag == null) {
423 throw new IOException("interrupted mid tag");
424 }
425 }
426 ++stanzasReceived;
427 lastPaketReceived = SystemClock.elapsedRealtime();
428 return element;
429 }
430
431 private void processIq(Tag currentTag) throws XmlPullParserException,
432 IOException {
433 IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
434
435 if (packet.getId() == null) {
436 return; // an iq packet without id is definitely invalid
437 }
438
439 if (packet instanceof JinglePacket) {
440 if (this.jingleListener != null) {
441 this.jingleListener.onJinglePacketReceived(account,
442 (JinglePacket) packet);
443 }
444 } else {
445 if (packetCallbacks.containsKey(packet.getId())) {
446 if (packetCallbacks.get(packet.getId()) instanceof OnIqPacketReceived) {
447 ((OnIqPacketReceived) packetCallbacks.get(packet.getId()))
448 .onIqPacketReceived(account, packet);
449 }
450
451 packetCallbacks.remove(packet.getId());
452 } else if ((packet.getType() == IqPacket.TYPE_GET || packet
453 .getType() == IqPacket.TYPE_SET)
454 && this.unregisteredIqListener != null) {
455 this.unregisteredIqListener.onIqPacketReceived(account, packet);
456 }
457 }
458 }
459
460 private void processMessage(Tag currentTag) throws XmlPullParserException,
461 IOException {
462 MessagePacket packet = (MessagePacket) processPacket(currentTag,
463 PACKET_MESSAGE);
464 String id = packet.getAttribute("id");
465 if ((id != null) && (packetCallbacks.containsKey(id))) {
466 if (packetCallbacks.get(id) instanceof OnMessagePacketReceived) {
467 ((OnMessagePacketReceived) packetCallbacks.get(id))
468 .onMessagePacketReceived(account, packet);
469 }
470 packetCallbacks.remove(id);
471 } else if (this.messageListener != null) {
472 this.messageListener.onMessagePacketReceived(account, packet);
473 }
474 }
475
476 private void processPresence(Tag currentTag) throws XmlPullParserException,
477 IOException {
478 PresencePacket packet = (PresencePacket) processPacket(currentTag,
479 PACKET_PRESENCE);
480 String id = packet.getAttribute("id");
481 if ((id != null) && (packetCallbacks.containsKey(id))) {
482 if (packetCallbacks.get(id) instanceof OnPresencePacketReceived) {
483 ((OnPresencePacketReceived) packetCallbacks.get(id))
484 .onPresencePacketReceived(account, packet);
485 }
486 packetCallbacks.remove(id);
487 } else if (this.presenceListener != null) {
488 this.presenceListener.onPresencePacketReceived(account, packet);
489 }
490 }
491
492 private void sendCompressionZlib() throws IOException {
493 Element compress = new Element("compress");
494 compress.setAttribute("xmlns", "http://jabber.org/protocol/compress");
495 compress.addChild("method").setContent("zlib");
496 tagWriter.writeElement(compress);
497 }
498
499 private void switchOverToZLib(Tag currentTag)
500 throws XmlPullParserException, IOException,
501 NoSuchAlgorithmException {
502 tagReader.readTag(); // read tag close
503 tagWriter.setOutputStream(new ZLibOutputStream(tagWriter
504 .getOutputStream()));
505 tagReader
506 .setInputStream(new ZLibInputStream(tagReader.getInputStream()));
507
508 sendStartStream();
509 Log.d(Config.LOGTAG, account.getJid() + ": compression enabled");
510 usingCompression = true;
511 processStream(tagReader.readTag());
512 }
513
514 private void sendStartTLS() throws IOException {
515 Tag startTLS = Tag.empty("starttls");
516 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
517 tagWriter.writeTag(startTLS);
518 }
519
520 private void switchOverToTls(Tag currentTag) throws XmlPullParserException,
521 IOException {
522 tagReader.readTag();
523 try {
524 SSLContext sc = SSLContext.getInstance("TLS");
525 sc.init(null,
526 new X509TrustManager[] { this.mMemorizingTrustManager },
527 mRandom);
528 SSLSocketFactory factory = sc.getSocketFactory();
529
530 HostnameVerifier verifier = this.mMemorizingTrustManager
531 .wrapHostnameVerifier(new org.apache.http.conn.ssl.StrictHostnameVerifier());
532 SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,
533 socket.getInetAddress().getHostAddress(), socket.getPort(),
534 true);
535
536 if (verifier != null
537 && !verifier.verify(account.getServer(),
538 sslSocket.getSession())) {
539 Log.d(Config.LOGTAG, account.getJid()
540 + ": host mismatch in TLS connection");
541 sslSocket.close();
542 throw new IOException();
543 }
544 tagReader.setInputStream(sslSocket.getInputStream());
545 tagWriter.setOutputStream(sslSocket.getOutputStream());
546 sendStartStream();
547 Log.d(Config.LOGTAG, account.getJid()
548 + ": TLS connection established");
549 processStream(tagReader.readTag());
550 sslSocket.close();
551 } catch (NoSuchAlgorithmException e1) {
552 e1.printStackTrace();
553 } catch (KeyManagementException e) {
554 e.printStackTrace();
555 }
556 }
557
558 private void sendSaslAuthPlain() throws IOException {
559 String saslString = CryptoHelper.saslPlain(account.getUsername(),
560 account.getPassword());
561 Element auth = new Element("auth");
562 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
563 auth.setAttribute("mechanism", "PLAIN");
564 auth.setContent(saslString);
565 tagWriter.writeElement(auth);
566 }
567
568 private void sendSaslAuthDigestMd5() throws IOException {
569 Element auth = new Element("auth");
570 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
571 auth.setAttribute("mechanism", "DIGEST-MD5");
572 tagWriter.writeElement(auth);
573 }
574
575 private void processStreamFeatures(Tag currentTag)
576 throws XmlPullParserException, IOException {
577 this.streamFeatures = tagReader.readElement(currentTag);
578 if (this.streamFeatures.hasChild("starttls")
579 && account.isOptionSet(Account.OPTION_USETLS)) {
580 sendStartTLS();
581 } else if (compressionAvailable()) {
582 sendCompressionZlib();
583 } else if (this.streamFeatures.hasChild("register")
584 && (account.isOptionSet(Account.OPTION_REGISTER))) {
585 sendRegistryRequest();
586 } else if (!this.streamFeatures.hasChild("register")
587 && (account.isOptionSet(Account.OPTION_REGISTER))) {
588 changeStatus(Account.STATUS_REGISTRATION_NOT_SUPPORTED);
589 disconnect(true);
590 } else if (this.streamFeatures.hasChild("mechanisms")
591 && shouldAuthenticate) {
592 List<String> mechanisms = extractMechanisms(streamFeatures
593 .findChild("mechanisms"));
594 if (mechanisms.contains("PLAIN")) {
595 sendSaslAuthPlain();
596 } else if (mechanisms.contains("DIGEST-MD5")) {
597 sendSaslAuthDigestMd5();
598 }
599 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:"
600 + smVersion)
601 && streamId != null) {
602 ResumePacket resume = new ResumePacket(this.streamId,
603 stanzasReceived, smVersion);
604 this.tagWriter.writeStanzaAsync(resume);
605 } else if (this.streamFeatures.hasChild("bind") && shouldBind) {
606 sendBindRequest();
607 }
608 }
609
610 private boolean compressionAvailable() {
611 if (!this.streamFeatures.hasChild("compression",
612 "http://jabber.org/features/compress"))
613 return false;
614 if (!ZLibOutputStream.SUPPORTED)
615 return false;
616 if (!account.isOptionSet(Account.OPTION_USECOMPRESSION))
617 return false;
618
619 Element compression = this.streamFeatures.findChild("compression",
620 "http://jabber.org/features/compress");
621 for (Element child : compression.getChildren()) {
622 if (!"method".equals(child.getName()))
623 continue;
624
625 if ("zlib".equalsIgnoreCase(child.getContent())) {
626 return true;
627 }
628 }
629 return false;
630 }
631
632 private List<String> extractMechanisms(Element stream) {
633 ArrayList<String> mechanisms = new ArrayList<String>(stream
634 .getChildren().size());
635 for (Element child : stream.getChildren()) {
636 mechanisms.add(child.getContent());
637 }
638 return mechanisms;
639 }
640
641 private void sendRegistryRequest() {
642 IqPacket register = new IqPacket(IqPacket.TYPE_GET);
643 register.query("jabber:iq:register");
644 register.setTo(account.getServer());
645 sendIqPacket(register, new OnIqPacketReceived() {
646
647 @Override
648 public void onIqPacketReceived(Account account, IqPacket packet) {
649 Element instructions = packet.query().findChild("instructions");
650 if (packet.query().hasChild("username")
651 && (packet.query().hasChild("password"))) {
652 IqPacket register = new IqPacket(IqPacket.TYPE_SET);
653 Element username = new Element("username")
654 .setContent(account.getUsername());
655 Element password = new Element("password")
656 .setContent(account.getPassword());
657 register.query("jabber:iq:register").addChild(username);
658 register.query().addChild(password);
659 sendIqPacket(register, new OnIqPacketReceived() {
660
661 @Override
662 public void onIqPacketReceived(Account account,
663 IqPacket packet) {
664 if (packet.getType() == IqPacket.TYPE_RESULT) {
665 account.setOption(Account.OPTION_REGISTER,
666 false);
667 changeStatus(Account.STATUS_REGISTRATION_SUCCESSFULL);
668 } else if (packet.hasChild("error")
669 && (packet.findChild("error")
670 .hasChild("conflict"))) {
671 changeStatus(Account.STATUS_REGISTRATION_CONFLICT);
672 } else {
673 changeStatus(Account.STATUS_REGISTRATION_FAILED);
674 Log.d(Config.LOGTAG, packet.toString());
675 }
676 disconnect(true);
677 }
678 });
679 } else {
680 changeStatus(Account.STATUS_REGISTRATION_FAILED);
681 disconnect(true);
682 Log.d(Config.LOGTAG, account.getJid()
683 + ": could not register. instructions are"
684 + instructions.getContent());
685 }
686 }
687 });
688 }
689
690 private void sendBindRequest() throws IOException {
691 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
692 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
693 .addChild("resource").setContent(account.getResource());
694 this.sendUnboundIqPacket(iq, new OnIqPacketReceived() {
695 @Override
696 public void onIqPacketReceived(Account account, IqPacket packet) {
697 Element bind = packet.findChild("bind");
698 if (bind != null) {
699 Element jid = bind.findChild("jid");
700 if (jid != null && jid.getContent() != null) {
701 account.setResource(jid.getContent().split("/", 2)[1]);
702 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
703 smVersion = 3;
704 EnablePacket enable = new EnablePacket(smVersion);
705 tagWriter.writeStanzaAsync(enable);
706 stanzasSent = 0;
707 messageReceipts.clear();
708 } else if (streamFeatures.hasChild("sm",
709 "urn:xmpp:sm:2")) {
710 smVersion = 2;
711 EnablePacket enable = new EnablePacket(smVersion);
712 tagWriter.writeStanzaAsync(enable);
713 stanzasSent = 0;
714 messageReceipts.clear();
715 }
716 sendServiceDiscoveryInfo(account.getServer());
717 sendServiceDiscoveryItems(account.getServer());
718 if (bindListener != null) {
719 bindListener.onBind(account);
720 }
721 sendInitialPing();
722 } else {
723 disconnect(true);
724 }
725 } else {
726 disconnect(true);
727 }
728 }
729 });
730 if (this.streamFeatures.hasChild("session")) {
731 Log.d(Config.LOGTAG, account.getJid()
732 + ": sending deprecated session");
733 IqPacket startSession = new IqPacket(IqPacket.TYPE_SET);
734 startSession.addChild("session",
735 "urn:ietf:params:xml:ns:xmpp-session");
736 this.sendUnboundIqPacket(startSession, null);
737 }
738 }
739
740 private void sendServiceDiscoveryInfo(final String server) {
741 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
742 iq.setTo(server);
743 iq.query("http://jabber.org/protocol/disco#info");
744 this.sendIqPacket(iq, new OnIqPacketReceived() {
745
746 @Override
747 public void onIqPacketReceived(Account account, IqPacket packet) {
748 List<Element> elements = packet.query().getChildren();
749 List<String> features = new ArrayList<String>();
750 for (int i = 0; i < elements.size(); ++i) {
751 if (elements.get(i).getName().equals("feature")) {
752 features.add(elements.get(i).getAttribute("var"));
753 }
754 }
755 disco.put(server, features);
756
757 if (account.getServer().equals(server)) {
758 enableAdvancedStreamFeatures();
759 }
760 }
761 });
762 }
763
764 private void enableAdvancedStreamFeatures() {
765 if (getFeatures().carbons()) {
766 sendEnableCarbons();
767 }
768 }
769
770 private void sendServiceDiscoveryItems(final String server) {
771 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
772 iq.setTo(server);
773 iq.query("http://jabber.org/protocol/disco#items");
774 this.sendIqPacket(iq, new OnIqPacketReceived() {
775
776 @Override
777 public void onIqPacketReceived(Account account, IqPacket packet) {
778 List<Element> elements = packet.query().getChildren();
779 for (int i = 0; i < elements.size(); ++i) {
780 if (elements.get(i).getName().equals("item")) {
781 String jid = elements.get(i).getAttribute("jid");
782 sendServiceDiscoveryInfo(jid);
783 }
784 }
785 }
786 });
787 }
788
789 private void sendEnableCarbons() {
790 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
791 iq.addChild("enable", "urn:xmpp:carbons:2");
792 this.sendIqPacket(iq, new OnIqPacketReceived() {
793
794 @Override
795 public void onIqPacketReceived(Account account, IqPacket packet) {
796 if (!packet.hasChild("error")) {
797 Log.d(Config.LOGTAG, account.getJid()
798 + ": successfully enabled carbons");
799 } else {
800 Log.d(Config.LOGTAG, account.getJid()
801 + ": error enableing carbons " + packet.toString());
802 }
803 }
804 });
805 }
806
807 private void processStreamError(Tag currentTag)
808 throws XmlPullParserException, IOException {
809 Element streamError = tagReader.readElement(currentTag);
810 if (streamError != null && streamError.hasChild("conflict")) {
811 String resource = account.getResource().split("\\.")[0];
812 account.setResource(resource + "." + nextRandomId());
813 Log.d(Config.LOGTAG,
814 account.getJid() + ": switching resource due to conflict ("
815 + account.getResource() + ")");
816 }
817 }
818
819 private void sendStartStream() throws IOException {
820 Tag stream = Tag.start("stream:stream");
821 stream.setAttribute("from", account.getJid());
822 stream.setAttribute("to", account.getServer());
823 stream.setAttribute("version", "1.0");
824 stream.setAttribute("xml:lang", "en");
825 stream.setAttribute("xmlns", "jabber:client");
826 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
827 tagWriter.writeTag(stream);
828 }
829
830 private String nextRandomId() {
831 return new BigInteger(50, mRandom).toString(32);
832 }
833
834 public void sendIqPacket(IqPacket packet, OnIqPacketReceived callback) {
835 if (packet.getId() == null) {
836 String id = nextRandomId();
837 packet.setAttribute("id", id);
838 }
839 packet.setFrom(account.getFullJid());
840 this.sendPacket(packet, callback);
841 }
842
843 public void sendUnboundIqPacket(IqPacket packet, OnIqPacketReceived callback) {
844 if (packet.getId() == null) {
845 String id = nextRandomId();
846 packet.setAttribute("id", id);
847 }
848 this.sendPacket(packet, callback);
849 }
850
851 public void sendMessagePacket(MessagePacket packet) {
852 this.sendPacket(packet, null);
853 }
854
855 public void sendPresencePacket(PresencePacket packet) {
856 this.sendPacket(packet, null);
857 }
858
859 private synchronized void sendPacket(final AbstractStanza packet,
860 PacketReceived callback) {
861 if (packet.getName().equals("iq") || packet.getName().equals("message")
862 || packet.getName().equals("presence")) {
863 ++stanzasSent;
864 }
865 tagWriter.writeStanzaAsync(packet);
866 if (packet instanceof MessagePacket && packet.getId() != null
867 && this.streamId != null) {
868 Log.d(Config.LOGTAG, "request delivery report for stanza "
869 + stanzasSent);
870 this.messageReceipts.put(stanzasSent, packet.getId());
871 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
872 }
873 if (callback != null) {
874 if (packet.getId() == null) {
875 packet.setId(nextRandomId());
876 }
877 packetCallbacks.put(packet.getId(), callback);
878 }
879 }
880
881 public void sendPing() {
882 if (streamFeatures.hasChild("sm")) {
883 tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
884 } else {
885 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
886 iq.setFrom(account.getFullJid());
887 iq.addChild("ping", "urn:xmpp:ping");
888 this.sendIqPacket(iq, null);
889 }
890 this.lastPingSent = SystemClock.elapsedRealtime();
891 }
892
893 public void setOnMessagePacketReceivedListener(
894 OnMessagePacketReceived listener) {
895 this.messageListener = listener;
896 }
897
898 public void setOnUnregisteredIqPacketReceivedListener(
899 OnIqPacketReceived listener) {
900 this.unregisteredIqListener = listener;
901 }
902
903 public void setOnPresencePacketReceivedListener(
904 OnPresencePacketReceived listener) {
905 this.presenceListener = listener;
906 }
907
908 public void setOnJinglePacketReceivedListener(
909 OnJinglePacketReceived listener) {
910 this.jingleListener = listener;
911 }
912
913 public void setOnStatusChangedListener(OnStatusChanged listener) {
914 this.statusListener = listener;
915 }
916
917 public void setOnBindListener(OnBindListener listener) {
918 this.bindListener = listener;
919 }
920
921 public void setOnMessageAcknowledgeListener(OnMessageAcknowledged listener) {
922 this.acknowledgedListener = listener;
923 }
924
925 public void disconnect(boolean force) {
926 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting");
927 try {
928 if (force) {
929 socket.close();
930 return;
931 }
932 new Thread(new Runnable() {
933
934 @Override
935 public void run() {
936 if (tagWriter.isActive()) {
937 tagWriter.finish();
938 try {
939 while (!tagWriter.finished()) {
940 Log.d(Config.LOGTAG, "not yet finished");
941 Thread.sleep(100);
942 }
943 tagWriter.writeTag(Tag.end("stream:stream"));
944 socket.close();
945 } catch (IOException e) {
946 Log.d(Config.LOGTAG,
947 "io exception during disconnect");
948 } catch (InterruptedException e) {
949 Log.d(Config.LOGTAG, "interrupted");
950 }
951 }
952 }
953 }).start();
954 } catch (IOException e) {
955 Log.d(Config.LOGTAG, "io exception during disconnect");
956 }
957 }
958
959 public List<String> findDiscoItemsByFeature(String feature) {
960 List<String> items = new ArrayList<String>();
961 for (Entry<String, List<String>> cursor : disco.entrySet()) {
962 if (cursor.getValue().contains(feature)) {
963 items.add(cursor.getKey());
964 }
965 }
966 return items;
967 }
968
969 public String findDiscoItemByFeature(String feature) {
970 List<String> items = findDiscoItemsByFeature(feature);
971 if (items.size() >= 1) {
972 return items.get(0);
973 }
974 return null;
975 }
976
977 public void r() {
978 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
979 }
980
981 public String getMucServer() {
982 return findDiscoItemByFeature("http://jabber.org/protocol/muc");
983 }
984
985 public int getTimeToNextAttempt() {
986 int interval = (int) (25 * Math.pow(1.5, attempt));
987 int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
988 return interval - secondsSinceLast;
989 }
990
991 public int getAttempt() {
992 return this.attempt;
993 }
994
995 public Features getFeatures() {
996 return this.features;
997 }
998
999 public class Features {
1000 XmppConnection connection;
1001
1002 public Features(XmppConnection connection) {
1003 this.connection = connection;
1004 }
1005
1006 private boolean hasDiscoFeature(String server, String feature) {
1007 if (!connection.disco.containsKey(server)) {
1008 return false;
1009 }
1010 return connection.disco.get(server).contains(feature);
1011 }
1012
1013 public boolean carbons() {
1014 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
1015 }
1016
1017 public boolean sm() {
1018 return streamId != null;
1019 }
1020
1021 public boolean csi() {
1022 if (connection.streamFeatures == null) {
1023 return false;
1024 } else {
1025 return connection.streamFeatures.hasChild("csi",
1026 "urn:xmpp:csi:0");
1027 }
1028 }
1029
1030 public boolean pubsub() {
1031 return hasDiscoFeature(account.getServer(),
1032 "http://jabber.org/protocol/pubsub#publish");
1033 }
1034
1035 public boolean rosterVersioning() {
1036 if (connection.streamFeatures == null) {
1037 return false;
1038 } else {
1039 return connection.streamFeatures.hasChild("ver");
1040 }
1041 }
1042
1043 public boolean streamhost() {
1044 return connection
1045 .findDiscoItemByFeature("http://jabber.org/protocol/bytestreams") != null;
1046 }
1047
1048 public boolean compression() {
1049 return connection.usingCompression;
1050 }
1051 }
1052
1053 public long getLastSessionEstablished() {
1054 long diff;
1055 if (this.lastSessionStarted == 0) {
1056 diff = SystemClock.elapsedRealtime() - this.lastConnect;
1057 } else {
1058 diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1059 }
1060 return System.currentTimeMillis() - diff;
1061 }
1062
1063 public long getLastConnect() {
1064 return this.lastConnect;
1065 }
1066
1067 public long getLastPingSent() {
1068 return this.lastPingSent;
1069 }
1070
1071 public long getLastPacketReceived() {
1072 return this.lastPaketReceived;
1073 }
1074
1075 public void sendActive() {
1076 this.sendPacket(new ActivePacket(), null);
1077 }
1078
1079 public void sendInactive() {
1080 this.sendPacket(new InactivePacket(), null);
1081 }
1082}