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 private boolean usingEncryption = false;
84
85 private int stanzasReceived = 0;
86 private int stanzasSent = 0;
87
88 private long lastPaketReceived = 0;
89 private long lastPingSent = 0;
90 private long lastConnect = 0;
91 private long lastSessionStarted = 0;
92
93 private int attempt = 0;
94
95 private static final int PACKET_IQ = 0;
96 private static final int PACKET_MESSAGE = 1;
97 private static final int PACKET_PRESENCE = 2;
98
99 private Hashtable<String, PacketReceived> packetCallbacks = new Hashtable<String, PacketReceived>();
100 private OnPresencePacketReceived presenceListener = null;
101 private OnJinglePacketReceived jingleListener = null;
102 private OnIqPacketReceived unregisteredIqListener = null;
103 private OnMessagePacketReceived messageListener = null;
104 private OnStatusChanged statusListener = null;
105 private OnBindListener bindListener = null;
106 private OnMessageAcknowledged acknowledgedListener = null;
107 private MemorizingTrustManager mMemorizingTrustManager;
108
109 public XmppConnection(Account account, XmppConnectionService service) {
110 this.mRandom = service.getRNG();
111 this.mMemorizingTrustManager = service.getMemorizingTrustManager();
112 this.account = account;
113 this.wakeLock = service.getPowerManager().newWakeLock(
114 PowerManager.PARTIAL_WAKE_LOCK, account.getJid());
115 tagWriter = new TagWriter();
116 }
117
118 protected void changeStatus(int nextStatus) {
119 if (account.getStatus() != nextStatus) {
120 if ((nextStatus == Account.STATUS_OFFLINE)
121 && (account.getStatus() != Account.STATUS_CONNECTING)
122 && (account.getStatus() != Account.STATUS_ONLINE)
123 && (account.getStatus() != Account.STATUS_DISABLED)) {
124 return;
125 }
126 if (nextStatus == Account.STATUS_ONLINE) {
127 this.attempt = 0;
128 }
129 account.setStatus(nextStatus);
130 if (statusListener != null) {
131 statusListener.onStatusChanged(account);
132 }
133 }
134 }
135
136 protected void connect() {
137 Log.d(Config.LOGTAG, account.getJid() + ": connecting");
138 usingCompression = false;
139 usingEncryption = false;
140 lastConnect = SystemClock.elapsedRealtime();
141 lastPingSent = SystemClock.elapsedRealtime();
142 this.attempt++;
143 try {
144 shouldAuthenticate = shouldBind = !account
145 .isOptionSet(Account.OPTION_REGISTER);
146 tagReader = new XmlReader(wakeLock);
147 tagWriter = new TagWriter();
148 packetCallbacks.clear();
149 this.changeStatus(Account.STATUS_CONNECTING);
150 Bundle namePort = DNSHelper.getSRVRecord(account.getServer());
151 if ("timeout".equals(namePort.getString("error"))) {
152 Log.d(Config.LOGTAG, account.getJid() + ": dns timeout");
153 this.changeStatus(Account.STATUS_OFFLINE);
154 return;
155 }
156 String srvRecordServer = namePort.getString("name");
157 String srvIpServer = namePort.getString("ipv4");
158 int srvRecordPort = namePort.getInt("port");
159 if (srvRecordServer != null) {
160 if (srvIpServer != null) {
161 Log.d(Config.LOGTAG, account.getJid()
162 + ": using values from dns " + srvRecordServer
163 + "[" + srvIpServer + "]:" + srvRecordPort);
164 socket = new Socket(srvIpServer, srvRecordPort);
165 } else {
166 boolean socketError = true;
167 int srvIndex = 0;
168 while (socketError && namePort.containsKey("name" + srvIndex)){
169 try {
170 srvRecordServer = namePort.getString("name" + srvIndex);
171 srvRecordPort = namePort.getInt("port" + srvIndex);
172 Log.d(Config.LOGTAG, account.getJid()
173 + ": using values from dns " + srvRecordServer
174 + ":" + srvRecordPort);
175 socket = new Socket(srvRecordServer, srvRecordPort);
176 socketError = false;
177 } catch (UnknownHostException e) {
178 srvIndex++;
179 } catch (IOException e) {
180 srvIndex++;
181 }
182 }
183 }
184 } else if (namePort.containsKey("error")
185 && "nosrv".equals(namePort.getString("error", null))) {
186 socket = new Socket(account.getServer(), 5222);
187 } else {
188 Log.d(Config.LOGTAG, account.getJid()
189 + ": timeout in DNS resolution");
190 changeStatus(Account.STATUS_OFFLINE);
191 return;
192 }
193 OutputStream out = socket.getOutputStream();
194 tagWriter.setOutputStream(out);
195 InputStream in = socket.getInputStream();
196 tagReader.setInputStream(in);
197 tagWriter.beginDocument();
198 sendStartStream();
199 Tag nextTag;
200 while ((nextTag = tagReader.readTag()) != null) {
201 if (nextTag.isStart("stream")) {
202 processStream(nextTag);
203 break;
204 } else {
205 Log.d(Config.LOGTAG,
206 "found unexpected tag: " + nextTag.getName());
207 return;
208 }
209 }
210 if (socket.isConnected()) {
211 socket.close();
212 }
213 } catch (UnknownHostException e) {
214 this.changeStatus(Account.STATUS_SERVER_NOT_FOUND);
215 if (wakeLock.isHeld()) {
216 try {
217 wakeLock.release();
218 } catch (RuntimeException re) {
219 }
220 }
221 return;
222 } catch (IOException e) {
223 this.changeStatus(Account.STATUS_OFFLINE);
224 if (wakeLock.isHeld()) {
225 try {
226 wakeLock.release();
227 } catch (RuntimeException re) {
228 }
229 }
230 return;
231 } catch (NoSuchAlgorithmException e) {
232 this.changeStatus(Account.STATUS_OFFLINE);
233 Log.d(Config.LOGTAG, "compression exception " + e.getMessage());
234 if (wakeLock.isHeld()) {
235 try {
236 wakeLock.release();
237 } catch (RuntimeException re) {
238 }
239 }
240 return;
241 } catch (XmlPullParserException e) {
242 this.changeStatus(Account.STATUS_OFFLINE);
243 Log.d(Config.LOGTAG, "xml exception " + e.getMessage());
244 if (wakeLock.isHeld()) {
245 try {
246 wakeLock.release();
247 } catch (RuntimeException re) {
248 }
249 }
250 return;
251 }
252
253 }
254
255 @Override
256 public void run() {
257 connect();
258 }
259
260 private void processStream(Tag currentTag) throws XmlPullParserException,
261 IOException, NoSuchAlgorithmException {
262 Tag nextTag = tagReader.readTag();
263 while ((nextTag != null) && (!nextTag.isEnd("stream"))) {
264 if (nextTag.isStart("error")) {
265 processStreamError(nextTag);
266 } else if (nextTag.isStart("features")) {
267 processStreamFeatures(nextTag);
268 } else if (nextTag.isStart("proceed")) {
269 switchOverToTls(nextTag);
270 } else if (nextTag.isStart("compressed")) {
271 switchOverToZLib(nextTag);
272 } else if (nextTag.isStart("success")) {
273 Log.d(Config.LOGTAG, account.getJid() + ": logged in");
274 tagReader.readTag();
275 tagReader.reset();
276 sendStartStream();
277 processStream(tagReader.readTag());
278 break;
279 } else if (nextTag.isStart("failure")) {
280 tagReader.readElement(nextTag);
281 changeStatus(Account.STATUS_UNAUTHORIZED);
282 } else if (nextTag.isStart("challenge")) {
283 String challange = tagReader.readElement(nextTag).getContent();
284 Element response = new Element("response");
285 response.setAttribute("xmlns",
286 "urn:ietf:params:xml:ns:xmpp-sasl");
287 response.setContent(CryptoHelper.saslDigestMd5(account,
288 challange, mRandom));
289 tagWriter.writeElement(response);
290 } else if (nextTag.isStart("enabled")) {
291 Element enabled = tagReader.readElement(nextTag);
292 if ("true".equals(enabled.getAttribute("resume"))) {
293 this.streamId = enabled.getAttribute("id");
294 Log.d(Config.LOGTAG, account.getJid()
295 + ": stream managment(" + smVersion
296 + ") enabled (resumable)");
297 } else {
298 Log.d(Config.LOGTAG, account.getJid()
299 + ": stream managment(" + smVersion + ") enabled");
300 }
301 this.lastSessionStarted = SystemClock.elapsedRealtime();
302 this.stanzasReceived = 0;
303 RequestPacket r = new RequestPacket(smVersion);
304 tagWriter.writeStanzaAsync(r);
305 } else if (nextTag.isStart("resumed")) {
306 lastPaketReceived = SystemClock.elapsedRealtime();
307 Element resumed = tagReader.readElement(nextTag);
308 String h = resumed.getAttribute("h");
309 try {
310 int serverCount = Integer.parseInt(h);
311 if (serverCount != stanzasSent) {
312 Log.d(Config.LOGTAG, account.getJid()
313 + ": session resumed with lost packages");
314 stanzasSent = serverCount;
315 } else {
316 Log.d(Config.LOGTAG, account.getJid()
317 + ": session resumed");
318 }
319 if (acknowledgedListener != null) {
320 for (int i = 0; i < messageReceipts.size(); ++i) {
321 if (serverCount >= messageReceipts.keyAt(i)) {
322 acknowledgedListener.onMessageAcknowledged(
323 account, messageReceipts.valueAt(i));
324 }
325 }
326 }
327 messageReceipts.clear();
328 } catch (NumberFormatException e) {
329
330 }
331 sendInitialPing();
332
333 } else if (nextTag.isStart("r")) {
334 tagReader.readElement(nextTag);
335 AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
336 tagWriter.writeStanzaAsync(ack);
337 } else if (nextTag.isStart("a")) {
338 Element ack = tagReader.readElement(nextTag);
339 lastPaketReceived = SystemClock.elapsedRealtime();
340 int serverSequence = Integer.parseInt(ack.getAttribute("h"));
341 String msgId = this.messageReceipts.get(serverSequence);
342 if (msgId != null) {
343 if (this.acknowledgedListener != null) {
344 this.acknowledgedListener.onMessageAcknowledged(
345 account, msgId);
346 }
347 this.messageReceipts.remove(serverSequence);
348 }
349 } else if (nextTag.isStart("failed")) {
350 tagReader.readElement(nextTag);
351 Log.d(Config.LOGTAG, account.getJid() + ": resumption failed");
352 streamId = null;
353 if (account.getStatus() != Account.STATUS_ONLINE) {
354 sendBindRequest();
355 }
356 } else if (nextTag.isStart("iq")) {
357 processIq(nextTag);
358 } else if (nextTag.isStart("message")) {
359 processMessage(nextTag);
360 } else if (nextTag.isStart("presence")) {
361 processPresence(nextTag);
362 }
363 nextTag = tagReader.readTag();
364 }
365 if (account.getStatus() == Account.STATUS_ONLINE) {
366 account.setStatus(Account.STATUS_OFFLINE);
367 if (statusListener != null) {
368 statusListener.onStatusChanged(account);
369 }
370 }
371 }
372
373 private void sendInitialPing() {
374 Log.d(Config.LOGTAG, account.getJid() + ": sending intial ping");
375 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
376 iq.setFrom(account.getFullJid());
377 iq.addChild("ping", "urn:xmpp:ping");
378 this.sendIqPacket(iq, new OnIqPacketReceived() {
379
380 @Override
381 public void onIqPacketReceived(Account account, IqPacket packet) {
382 Log.d(Config.LOGTAG, account.getJid()
383 + ": online with resource " + account.getResource());
384 changeStatus(Account.STATUS_ONLINE);
385 }
386 });
387 }
388
389 private Element processPacket(Tag currentTag, int packetType)
390 throws XmlPullParserException, IOException {
391 Element element;
392 switch (packetType) {
393 case PACKET_IQ:
394 element = new IqPacket();
395 break;
396 case PACKET_MESSAGE:
397 element = new MessagePacket();
398 break;
399 case PACKET_PRESENCE:
400 element = new PresencePacket();
401 break;
402 default:
403 return null;
404 }
405 element.setAttributes(currentTag.getAttributes());
406 Tag nextTag = tagReader.readTag();
407 if (nextTag == null) {
408 throw new IOException("interrupted mid tag");
409 }
410 while (!nextTag.isEnd(element.getName())) {
411 if (!nextTag.isNo()) {
412 Element child = tagReader.readElement(nextTag);
413 String type = currentTag.getAttribute("type");
414 if (packetType == PACKET_IQ
415 && "jingle".equals(child.getName())
416 && ("set".equalsIgnoreCase(type) || "get"
417 .equalsIgnoreCase(type))) {
418 element = new JinglePacket();
419 element.setAttributes(currentTag.getAttributes());
420 }
421 element.addChild(child);
422 }
423 nextTag = tagReader.readTag();
424 if (nextTag == null) {
425 throw new IOException("interrupted mid tag");
426 }
427 }
428 ++stanzasReceived;
429 lastPaketReceived = SystemClock.elapsedRealtime();
430 return element;
431 }
432
433 private void processIq(Tag currentTag) throws XmlPullParserException,
434 IOException {
435 IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
436
437 if (packet.getId() == null) {
438 return; // an iq packet without id is definitely invalid
439 }
440
441 if (packet instanceof JinglePacket) {
442 if (this.jingleListener != null) {
443 this.jingleListener.onJinglePacketReceived(account,
444 (JinglePacket) packet);
445 }
446 } else {
447 if (packetCallbacks.containsKey(packet.getId())) {
448 if (packetCallbacks.get(packet.getId()) instanceof OnIqPacketReceived) {
449 ((OnIqPacketReceived) packetCallbacks.get(packet.getId()))
450 .onIqPacketReceived(account, packet);
451 }
452
453 packetCallbacks.remove(packet.getId());
454 } else if ((packet.getType() == IqPacket.TYPE_GET || packet
455 .getType() == IqPacket.TYPE_SET)
456 && this.unregisteredIqListener != null) {
457 this.unregisteredIqListener.onIqPacketReceived(account, packet);
458 }
459 }
460 }
461
462 private void processMessage(Tag currentTag) throws XmlPullParserException,
463 IOException {
464 MessagePacket packet = (MessagePacket) processPacket(currentTag,
465 PACKET_MESSAGE);
466 String id = packet.getAttribute("id");
467 if ((id != null) && (packetCallbacks.containsKey(id))) {
468 if (packetCallbacks.get(id) instanceof OnMessagePacketReceived) {
469 ((OnMessagePacketReceived) packetCallbacks.get(id))
470 .onMessagePacketReceived(account, packet);
471 }
472 packetCallbacks.remove(id);
473 } else if (this.messageListener != null) {
474 this.messageListener.onMessagePacketReceived(account, packet);
475 }
476 }
477
478 private void processPresence(Tag currentTag) throws XmlPullParserException,
479 IOException {
480 PresencePacket packet = (PresencePacket) processPacket(currentTag,
481 PACKET_PRESENCE);
482 String id = packet.getAttribute("id");
483 if ((id != null) && (packetCallbacks.containsKey(id))) {
484 if (packetCallbacks.get(id) instanceof OnPresencePacketReceived) {
485 ((OnPresencePacketReceived) packetCallbacks.get(id))
486 .onPresencePacketReceived(account, packet);
487 }
488 packetCallbacks.remove(id);
489 } else if (this.presenceListener != null) {
490 this.presenceListener.onPresencePacketReceived(account, packet);
491 }
492 }
493
494 private void sendCompressionZlib() throws IOException {
495 Element compress = new Element("compress");
496 compress.setAttribute("xmlns", "http://jabber.org/protocol/compress");
497 compress.addChild("method").setContent("zlib");
498 tagWriter.writeElement(compress);
499 }
500
501 private void switchOverToZLib(Tag currentTag)
502 throws XmlPullParserException, IOException,
503 NoSuchAlgorithmException {
504 tagReader.readTag(); // read tag close
505 tagWriter.setOutputStream(new ZLibOutputStream(tagWriter
506 .getOutputStream()));
507 tagReader
508 .setInputStream(new ZLibInputStream(tagReader.getInputStream()));
509
510 sendStartStream();
511 Log.d(Config.LOGTAG, account.getJid() + ": compression enabled");
512 usingCompression = true;
513 processStream(tagReader.readTag());
514 }
515
516 private void sendStartTLS() throws IOException {
517 Tag startTLS = Tag.empty("starttls");
518 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
519 tagWriter.writeTag(startTLS);
520 }
521
522 private void switchOverToTls(Tag currentTag) throws XmlPullParserException,
523 IOException {
524 tagReader.readTag();
525 try {
526 SSLContext sc = SSLContext.getInstance("TLS");
527 sc.init(null,
528 new X509TrustManager[] { this.mMemorizingTrustManager },
529 mRandom);
530 SSLSocketFactory factory = sc.getSocketFactory();
531
532 HostnameVerifier verifier = this.mMemorizingTrustManager
533 .wrapHostnameVerifier(new org.apache.http.conn.ssl.StrictHostnameVerifier());
534 SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,
535 socket.getInetAddress().getHostAddress(), socket.getPort(),
536 true);
537
538 if (verifier != null
539 && !verifier.verify(account.getServer(),
540 sslSocket.getSession())) {
541 Log.d(Config.LOGTAG, account.getJid()
542 + ": host mismatch in TLS connection");
543 sslSocket.close();
544 throw new IOException();
545 }
546 tagReader.setInputStream(sslSocket.getInputStream());
547 tagWriter.setOutputStream(sslSocket.getOutputStream());
548 sendStartStream();
549 Log.d(Config.LOGTAG, account.getJid()
550 + ": TLS connection established");
551 usingEncryption = true;
552 processStream(tagReader.readTag());
553 sslSocket.close();
554 } catch (NoSuchAlgorithmException e1) {
555 e1.printStackTrace();
556 } catch (KeyManagementException e) {
557 e.printStackTrace();
558 }
559 }
560
561 private void sendSaslAuthPlain() throws IOException {
562 String saslString = CryptoHelper.saslPlain(account.getUsername(),
563 account.getPassword());
564 Element auth = new Element("auth");
565 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
566 auth.setAttribute("mechanism", "PLAIN");
567 auth.setContent(saslString);
568 tagWriter.writeElement(auth);
569 }
570
571 private void sendSaslAuthDigestMd5() throws IOException {
572 Element auth = new Element("auth");
573 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
574 auth.setAttribute("mechanism", "DIGEST-MD5");
575 tagWriter.writeElement(auth);
576 }
577
578 private void processStreamFeatures(Tag currentTag)
579 throws XmlPullParserException, IOException {
580 this.streamFeatures = tagReader.readElement(currentTag);
581 if (this.streamFeatures.hasChild("starttls") && !usingEncryption) {
582 sendStartTLS();
583 } else if (compressionAvailable()) {
584 sendCompressionZlib();
585 } else if (this.streamFeatures.hasChild("register")
586 && (account.isOptionSet(Account.OPTION_REGISTER))) {
587 sendRegistryRequest();
588 } else if (!this.streamFeatures.hasChild("register")
589 && (account.isOptionSet(Account.OPTION_REGISTER))) {
590 changeStatus(Account.STATUS_REGISTRATION_NOT_SUPPORTED);
591 disconnect(true);
592 } else if (this.streamFeatures.hasChild("mechanisms")
593 && shouldAuthenticate && usingEncryption) {
594 List<String> mechanisms = extractMechanisms(streamFeatures
595 .findChild("mechanisms"));
596 if (mechanisms.contains("PLAIN")) {
597 sendSaslAuthPlain();
598 } else if (mechanisms.contains("DIGEST-MD5")) {
599 sendSaslAuthDigestMd5();
600 }
601 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:"
602 + smVersion)
603 && streamId != null) {
604 ResumePacket resume = new ResumePacket(this.streamId,
605 stanzasReceived, smVersion);
606 this.tagWriter.writeStanzaAsync(resume);
607 } else if (this.streamFeatures.hasChild("bind") && shouldBind) {
608 sendBindRequest();
609 }
610 }
611
612 private boolean compressionAvailable() {
613 if (!this.streamFeatures.hasChild("compression",
614 "http://jabber.org/features/compress"))
615 return false;
616 if (!ZLibOutputStream.SUPPORTED)
617 return false;
618 if (!account.isOptionSet(Account.OPTION_USECOMPRESSION))
619 return false;
620
621 Element compression = this.streamFeatures.findChild("compression",
622 "http://jabber.org/features/compress");
623 for (Element child : compression.getChildren()) {
624 if (!"method".equals(child.getName()))
625 continue;
626
627 if ("zlib".equalsIgnoreCase(child.getContent())) {
628 return true;
629 }
630 }
631 return false;
632 }
633
634 private List<String> extractMechanisms(Element stream) {
635 ArrayList<String> mechanisms = new ArrayList<String>(stream
636 .getChildren().size());
637 for (Element child : stream.getChildren()) {
638 mechanisms.add(child.getContent());
639 }
640 return mechanisms;
641 }
642
643 private void sendRegistryRequest() {
644 IqPacket register = new IqPacket(IqPacket.TYPE_GET);
645 register.query("jabber:iq:register");
646 register.setTo(account.getServer());
647 sendIqPacket(register, new OnIqPacketReceived() {
648
649 @Override
650 public void onIqPacketReceived(Account account, IqPacket packet) {
651 Element instructions = packet.query().findChild("instructions");
652 if (packet.query().hasChild("username")
653 && (packet.query().hasChild("password"))) {
654 IqPacket register = new IqPacket(IqPacket.TYPE_SET);
655 Element username = new Element("username")
656 .setContent(account.getUsername());
657 Element password = new Element("password")
658 .setContent(account.getPassword());
659 register.query("jabber:iq:register").addChild(username);
660 register.query().addChild(password);
661 sendIqPacket(register, new OnIqPacketReceived() {
662
663 @Override
664 public void onIqPacketReceived(Account account,
665 IqPacket packet) {
666 if (packet.getType() == IqPacket.TYPE_RESULT) {
667 account.setOption(Account.OPTION_REGISTER,
668 false);
669 changeStatus(Account.STATUS_REGISTRATION_SUCCESSFULL);
670 } else if (packet.hasChild("error")
671 && (packet.findChild("error")
672 .hasChild("conflict"))) {
673 changeStatus(Account.STATUS_REGISTRATION_CONFLICT);
674 } else {
675 changeStatus(Account.STATUS_REGISTRATION_FAILED);
676 Log.d(Config.LOGTAG, packet.toString());
677 }
678 disconnect(true);
679 }
680 });
681 } else {
682 changeStatus(Account.STATUS_REGISTRATION_FAILED);
683 disconnect(true);
684 Log.d(Config.LOGTAG, account.getJid()
685 + ": could not register. instructions are"
686 + instructions.getContent());
687 }
688 }
689 });
690 }
691
692 private void sendBindRequest() throws IOException {
693 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
694 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
695 .addChild("resource").setContent(account.getResource());
696 this.sendUnboundIqPacket(iq, new OnIqPacketReceived() {
697 @Override
698 public void onIqPacketReceived(Account account, IqPacket packet) {
699 Element bind = packet.findChild("bind");
700 if (bind != null) {
701 Element jid = bind.findChild("jid");
702 if (jid != null && jid.getContent() != null) {
703 account.setResource(jid.getContent().split("/", 2)[1]);
704 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
705 smVersion = 3;
706 EnablePacket enable = new EnablePacket(smVersion);
707 tagWriter.writeStanzaAsync(enable);
708 stanzasSent = 0;
709 messageReceipts.clear();
710 } else if (streamFeatures.hasChild("sm",
711 "urn:xmpp:sm:2")) {
712 smVersion = 2;
713 EnablePacket enable = new EnablePacket(smVersion);
714 tagWriter.writeStanzaAsync(enable);
715 stanzasSent = 0;
716 messageReceipts.clear();
717 }
718 sendServiceDiscoveryInfo(account.getServer());
719 sendServiceDiscoveryItems(account.getServer());
720 if (bindListener != null) {
721 bindListener.onBind(account);
722 }
723 sendInitialPing();
724 } else {
725 disconnect(true);
726 }
727 } else {
728 disconnect(true);
729 }
730 }
731 });
732 if (this.streamFeatures.hasChild("session")) {
733 Log.d(Config.LOGTAG, account.getJid()
734 + ": sending deprecated session");
735 IqPacket startSession = new IqPacket(IqPacket.TYPE_SET);
736 startSession.addChild("session",
737 "urn:ietf:params:xml:ns:xmpp-session");
738 this.sendUnboundIqPacket(startSession, null);
739 }
740 }
741
742 private void sendServiceDiscoveryInfo(final String server) {
743 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
744 iq.setTo(server);
745 iq.query("http://jabber.org/protocol/disco#info");
746 this.sendIqPacket(iq, new OnIqPacketReceived() {
747
748 @Override
749 public void onIqPacketReceived(Account account, IqPacket packet) {
750 List<Element> elements = packet.query().getChildren();
751 List<String> features = new ArrayList<String>();
752 for (int i = 0; i < elements.size(); ++i) {
753 if (elements.get(i).getName().equals("feature")) {
754 features.add(elements.get(i).getAttribute("var"));
755 }
756 }
757 disco.put(server, features);
758
759 if (account.getServer().equals(server)) {
760 enableAdvancedStreamFeatures();
761 }
762 }
763 });
764 }
765
766 private void enableAdvancedStreamFeatures() {
767 if (getFeatures().carbons()) {
768 sendEnableCarbons();
769 }
770 }
771
772 private void sendServiceDiscoveryItems(final String server) {
773 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
774 iq.setTo(server);
775 iq.query("http://jabber.org/protocol/disco#items");
776 this.sendIqPacket(iq, new OnIqPacketReceived() {
777
778 @Override
779 public void onIqPacketReceived(Account account, IqPacket packet) {
780 List<Element> elements = packet.query().getChildren();
781 for (int i = 0; i < elements.size(); ++i) {
782 if (elements.get(i).getName().equals("item")) {
783 String jid = elements.get(i).getAttribute("jid");
784 sendServiceDiscoveryInfo(jid);
785 }
786 }
787 }
788 });
789 }
790
791 private void sendEnableCarbons() {
792 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
793 iq.addChild("enable", "urn:xmpp:carbons:2");
794 this.sendIqPacket(iq, new OnIqPacketReceived() {
795
796 @Override
797 public void onIqPacketReceived(Account account, IqPacket packet) {
798 if (!packet.hasChild("error")) {
799 Log.d(Config.LOGTAG, account.getJid()
800 + ": successfully enabled carbons");
801 } else {
802 Log.d(Config.LOGTAG, account.getJid()
803 + ": error enableing carbons " + packet.toString());
804 }
805 }
806 });
807 }
808
809 private void processStreamError(Tag currentTag)
810 throws XmlPullParserException, IOException {
811 Element streamError = tagReader.readElement(currentTag);
812 if (streamError != null && streamError.hasChild("conflict")) {
813 String resource = account.getResource().split("\\.")[0];
814 account.setResource(resource + "." + nextRandomId());
815 Log.d(Config.LOGTAG,
816 account.getJid() + ": switching resource due to conflict ("
817 + account.getResource() + ")");
818 }
819 }
820
821 private void sendStartStream() throws IOException {
822 Tag stream = Tag.start("stream:stream");
823 stream.setAttribute("from", account.getJid());
824 stream.setAttribute("to", account.getServer());
825 stream.setAttribute("version", "1.0");
826 stream.setAttribute("xml:lang", "en");
827 stream.setAttribute("xmlns", "jabber:client");
828 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
829 tagWriter.writeTag(stream);
830 }
831
832 private String nextRandomId() {
833 return new BigInteger(50, mRandom).toString(32);
834 }
835
836 public void sendIqPacket(IqPacket packet, OnIqPacketReceived callback) {
837 if (packet.getId() == null) {
838 String id = nextRandomId();
839 packet.setAttribute("id", id);
840 }
841 packet.setFrom(account.getFullJid());
842 this.sendPacket(packet, callback);
843 }
844
845 public void sendUnboundIqPacket(IqPacket packet, OnIqPacketReceived callback) {
846 if (packet.getId() == null) {
847 String id = nextRandomId();
848 packet.setAttribute("id", id);
849 }
850 this.sendPacket(packet, callback);
851 }
852
853 public void sendMessagePacket(MessagePacket packet) {
854 this.sendPacket(packet, null);
855 }
856
857 public void sendPresencePacket(PresencePacket packet) {
858 this.sendPacket(packet, null);
859 }
860
861 private synchronized void sendPacket(final AbstractStanza packet,
862 PacketReceived callback) {
863 if (packet.getName().equals("iq") || packet.getName().equals("message")
864 || packet.getName().equals("presence")) {
865 ++stanzasSent;
866 }
867 tagWriter.writeStanzaAsync(packet);
868 if (packet instanceof MessagePacket && packet.getId() != null
869 && this.streamId != null) {
870 Log.d(Config.LOGTAG, "request delivery report for stanza "
871 + stanzasSent);
872 this.messageReceipts.put(stanzasSent, packet.getId());
873 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
874 }
875 if (callback != null) {
876 if (packet.getId() == null) {
877 packet.setId(nextRandomId());
878 }
879 packetCallbacks.put(packet.getId(), callback);
880 }
881 }
882
883 public void sendPing() {
884 if (streamFeatures.hasChild("sm")) {
885 tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
886 } else {
887 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
888 iq.setFrom(account.getFullJid());
889 iq.addChild("ping", "urn:xmpp:ping");
890 this.sendIqPacket(iq, null);
891 }
892 this.lastPingSent = SystemClock.elapsedRealtime();
893 }
894
895 public void setOnMessagePacketReceivedListener(
896 OnMessagePacketReceived listener) {
897 this.messageListener = listener;
898 }
899
900 public void setOnUnregisteredIqPacketReceivedListener(
901 OnIqPacketReceived listener) {
902 this.unregisteredIqListener = listener;
903 }
904
905 public void setOnPresencePacketReceivedListener(
906 OnPresencePacketReceived listener) {
907 this.presenceListener = listener;
908 }
909
910 public void setOnJinglePacketReceivedListener(
911 OnJinglePacketReceived listener) {
912 this.jingleListener = listener;
913 }
914
915 public void setOnStatusChangedListener(OnStatusChanged listener) {
916 this.statusListener = listener;
917 }
918
919 public void setOnBindListener(OnBindListener listener) {
920 this.bindListener = listener;
921 }
922
923 public void setOnMessageAcknowledgeListener(OnMessageAcknowledged listener) {
924 this.acknowledgedListener = listener;
925 }
926
927 public void disconnect(boolean force) {
928 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting");
929 try {
930 if (force) {
931 socket.close();
932 return;
933 }
934 new Thread(new Runnable() {
935
936 @Override
937 public void run() {
938 if (tagWriter.isActive()) {
939 tagWriter.finish();
940 try {
941 while (!tagWriter.finished()) {
942 Log.d(Config.LOGTAG, "not yet finished");
943 Thread.sleep(100);
944 }
945 tagWriter.writeTag(Tag.end("stream:stream"));
946 socket.close();
947 } catch (IOException e) {
948 Log.d(Config.LOGTAG,
949 "io exception during disconnect");
950 } catch (InterruptedException e) {
951 Log.d(Config.LOGTAG, "interrupted");
952 }
953 }
954 }
955 }).start();
956 } catch (IOException e) {
957 Log.d(Config.LOGTAG, "io exception during disconnect");
958 }
959 }
960
961 public List<String> findDiscoItemsByFeature(String feature) {
962 List<String> items = new ArrayList<String>();
963 for (Entry<String, List<String>> cursor : disco.entrySet()) {
964 if (cursor.getValue().contains(feature)) {
965 items.add(cursor.getKey());
966 }
967 }
968 return items;
969 }
970
971 public String findDiscoItemByFeature(String feature) {
972 List<String> items = findDiscoItemsByFeature(feature);
973 if (items.size() >= 1) {
974 return items.get(0);
975 }
976 return null;
977 }
978
979 public void r() {
980 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
981 }
982
983 public String getMucServer() {
984 return findDiscoItemByFeature("http://jabber.org/protocol/muc");
985 }
986
987 public int getTimeToNextAttempt() {
988 int interval = (int) (25 * Math.pow(1.5, attempt));
989 int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
990 return interval - secondsSinceLast;
991 }
992
993 public int getAttempt() {
994 return this.attempt;
995 }
996
997 public Features getFeatures() {
998 return this.features;
999 }
1000
1001 public class Features {
1002 XmppConnection connection;
1003
1004 public Features(XmppConnection connection) {
1005 this.connection = connection;
1006 }
1007
1008 private boolean hasDiscoFeature(String server, String feature) {
1009 if (!connection.disco.containsKey(server)) {
1010 return false;
1011 }
1012 return connection.disco.get(server).contains(feature);
1013 }
1014
1015 public boolean carbons() {
1016 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
1017 }
1018
1019 public boolean sm() {
1020 return streamId != null;
1021 }
1022
1023 public boolean csi() {
1024 if (connection.streamFeatures == null) {
1025 return false;
1026 } else {
1027 return connection.streamFeatures.hasChild("csi",
1028 "urn:xmpp:csi:0");
1029 }
1030 }
1031
1032 public boolean pubsub() {
1033 return hasDiscoFeature(account.getServer(),
1034 "http://jabber.org/protocol/pubsub#publish");
1035 }
1036
1037 public boolean rosterVersioning() {
1038 if (connection.streamFeatures == null) {
1039 return false;
1040 } else {
1041 return connection.streamFeatures.hasChild("ver");
1042 }
1043 }
1044
1045 public boolean streamhost() {
1046 return connection
1047 .findDiscoItemByFeature("http://jabber.org/protocol/bytestreams") != null;
1048 }
1049
1050 public boolean compression() {
1051 return connection.usingCompression;
1052 }
1053 }
1054
1055 public long getLastSessionEstablished() {
1056 long diff;
1057 if (this.lastSessionStarted == 0) {
1058 diff = SystemClock.elapsedRealtime() - this.lastConnect;
1059 } else {
1060 diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1061 }
1062 return System.currentTimeMillis() - diff;
1063 }
1064
1065 public long getLastConnect() {
1066 return this.lastConnect;
1067 }
1068
1069 public long getLastPingSent() {
1070 return this.lastPingSent;
1071 }
1072
1073 public long getLastPacketReceived() {
1074 return this.lastPaketReceived;
1075 }
1076
1077 public void sendActive() {
1078 this.sendPacket(new ActivePacket(), null);
1079 }
1080
1081 public void sendInactive() {
1082 this.sendPacket(new InactivePacket(), null);
1083 }
1084}