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.Arrays;
14import java.util.HashMap;
15import java.util.Hashtable;
16import java.util.List;
17import java.util.Map.Entry;
18
19import javax.net.ssl.HostnameVerifier;
20import javax.net.ssl.SSLContext;
21import javax.net.ssl.SSLSocket;
22import javax.net.ssl.SSLSocketFactory;
23
24import javax.net.ssl.X509TrustManager;
25
26import org.xmlpull.v1.XmlPullParserException;
27
28import de.duenndns.ssl.MemorizingTrustManager;
29
30import android.os.Bundle;
31import android.os.PowerManager;
32import android.os.PowerManager.WakeLock;
33import android.os.SystemClock;
34import android.util.Log;
35import android.util.SparseArray;
36import eu.siacs.conversations.Config;
37import eu.siacs.conversations.entities.Account;
38import eu.siacs.conversations.services.XmppConnectionService;
39import eu.siacs.conversations.utils.CryptoHelper;
40import eu.siacs.conversations.utils.DNSHelper;
41import eu.siacs.conversations.utils.zlib.ZLibOutputStream;
42import eu.siacs.conversations.utils.zlib.ZLibInputStream;
43import eu.siacs.conversations.xml.Element;
44import eu.siacs.conversations.xml.Tag;
45import eu.siacs.conversations.xml.TagWriter;
46import eu.siacs.conversations.xml.XmlReader;
47import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
48import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
49import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
50import eu.siacs.conversations.xmpp.stanzas.IqPacket;
51import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
52import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
53import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
54import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
55import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
56import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
57import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
58import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
59
60public class XmppConnection implements Runnable {
61
62 protected Account account;
63
64 private WakeLock wakeLock;
65
66 private SecureRandom mRandom;
67
68 private Socket socket;
69 private XmlReader tagReader;
70 private TagWriter tagWriter;
71
72 private Features features = new Features(this);
73
74 private boolean shouldBind = true;
75 private boolean shouldAuthenticate = true;
76 private Element streamFeatures;
77 private HashMap<String, List<String>> disco = new HashMap<String, List<String>>();
78
79 private String streamId = null;
80 private int smVersion = 3;
81 private SparseArray<String> messageReceipts = new SparseArray<String>();
82
83 private boolean usingCompression = 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 lastConnect = SystemClock.elapsedRealtime();
140 lastPingSent = SystemClock.elapsedRealtime();
141 this.attempt++;
142 try {
143 shouldAuthenticate = shouldBind = !account
144 .isOptionSet(Account.OPTION_REGISTER);
145 tagReader = new XmlReader(wakeLock);
146 tagWriter = new TagWriter();
147 packetCallbacks.clear();
148 this.changeStatus(Account.STATUS_CONNECTING);
149 Bundle namePort = DNSHelper.getSRVRecord(account.getServer());
150 if ("timeout".equals(namePort.getString("error"))) {
151 Log.d(Config.LOGTAG, account.getJid() + ": dns timeout");
152 this.changeStatus(Account.STATUS_OFFLINE);
153 return;
154 }
155 String srvRecordServer = namePort.getString("name");
156 String srvIpServer = namePort.getString("ipv4");
157 int srvRecordPort = namePort.getInt("port");
158 if (srvRecordServer != null) {
159 if (srvIpServer != null) {
160 Log.d(Config.LOGTAG, account.getJid()
161 + ": using values from dns " + srvRecordServer
162 + "[" + srvIpServer + "]:" + srvRecordPort);
163 socket = new Socket(srvIpServer, srvRecordPort);
164 } else {
165 Log.d(Config.LOGTAG, account.getJid()
166 + ": using values from dns " + srvRecordServer
167 + ":" + srvRecordPort);
168 socket = new Socket(srvRecordServer, srvRecordPort);
169 }
170 } else if (namePort.containsKey("error")
171 && "nosrv".equals(namePort.getString("error", null))) {
172 socket = new Socket(account.getServer(), 5222);
173 } else {
174 Log.d(Config.LOGTAG, account.getJid()
175 + ": timeout in DNS resolution");
176 changeStatus(Account.STATUS_OFFLINE);
177 return;
178 }
179 OutputStream out = socket.getOutputStream();
180 tagWriter.setOutputStream(out);
181 InputStream in = socket.getInputStream();
182 tagReader.setInputStream(in);
183 tagWriter.beginDocument();
184 sendStartStream();
185 Tag nextTag;
186 while ((nextTag = tagReader.readTag()) != null) {
187 if (nextTag.isStart("stream")) {
188 processStream(nextTag);
189 break;
190 } else {
191 Log.d(Config.LOGTAG,
192 "found unexpected tag: " + nextTag.getName());
193 return;
194 }
195 }
196 if (socket.isConnected()) {
197 socket.close();
198 }
199 } catch (UnknownHostException e) {
200 this.changeStatus(Account.STATUS_SERVER_NOT_FOUND);
201 if (wakeLock.isHeld()) {
202 try {
203 wakeLock.release();
204 } catch (RuntimeException re) {
205 }
206 }
207 return;
208 } catch (IOException e) {
209 this.changeStatus(Account.STATUS_OFFLINE);
210 if (wakeLock.isHeld()) {
211 try {
212 wakeLock.release();
213 } catch (RuntimeException re) {
214 }
215 }
216 return;
217 } catch (NoSuchAlgorithmException e) {
218 this.changeStatus(Account.STATUS_OFFLINE);
219 Log.d(Config.LOGTAG, "compression exception " + e.getMessage());
220 if (wakeLock.isHeld()) {
221 try {
222 wakeLock.release();
223 } catch (RuntimeException re) {
224 }
225 }
226 return;
227 } catch (XmlPullParserException e) {
228 this.changeStatus(Account.STATUS_OFFLINE);
229 Log.d(Config.LOGTAG, "xml exception " + e.getMessage());
230 if (wakeLock.isHeld()) {
231 try {
232 wakeLock.release();
233 } catch (RuntimeException re) {
234 }
235 }
236 return;
237 }
238
239 }
240
241 @Override
242 public void run() {
243 connect();
244 }
245
246 private void processStream(Tag currentTag) throws XmlPullParserException,
247 IOException, NoSuchAlgorithmException {
248 Tag nextTag = tagReader.readTag();
249 while ((nextTag != null) && (!nextTag.isEnd("stream"))) {
250 if (nextTag.isStart("error")) {
251 processStreamError(nextTag);
252 } else if (nextTag.isStart("features")) {
253 processStreamFeatures(nextTag);
254 } else if (nextTag.isStart("proceed")) {
255 switchOverToTls(nextTag);
256 } else if (nextTag.isStart("compressed")) {
257 switchOverToZLib(nextTag);
258 } else if (nextTag.isStart("success")) {
259 Log.d(Config.LOGTAG, account.getJid() + ": logged in");
260 tagReader.readTag();
261 tagReader.reset();
262 sendStartStream();
263 processStream(tagReader.readTag());
264 break;
265 } else if (nextTag.isStart("failure")) {
266 tagReader.readElement(nextTag);
267 changeStatus(Account.STATUS_UNAUTHORIZED);
268 } else if (nextTag.isStart("challenge")) {
269 String challange = tagReader.readElement(nextTag).getContent();
270 Element response = new Element("response");
271 response.setAttribute("xmlns",
272 "urn:ietf:params:xml:ns:xmpp-sasl");
273 response.setContent(CryptoHelper.saslDigestMd5(account,
274 challange, mRandom));
275 tagWriter.writeElement(response);
276 } else if (nextTag.isStart("enabled")) {
277 Element enabled = tagReader.readElement(nextTag);
278 if ("true".equals(enabled.getAttribute("resume"))) {
279 this.streamId = enabled.getAttribute("id");
280 Log.d(Config.LOGTAG, account.getJid()
281 + ": stream managment(" + smVersion
282 + ") enabled (resumable)");
283 } else {
284 Log.d(Config.LOGTAG, account.getJid()
285 + ": stream managment(" + smVersion + ") enabled");
286 }
287 this.lastSessionStarted = SystemClock.elapsedRealtime();
288 this.stanzasReceived = 0;
289 RequestPacket r = new RequestPacket(smVersion);
290 tagWriter.writeStanzaAsync(r);
291 } else if (nextTag.isStart("resumed")) {
292 lastPaketReceived = SystemClock.elapsedRealtime();
293 Element resumed = tagReader.readElement(nextTag);
294 String h = resumed.getAttribute("h");
295 try {
296 int serverCount = Integer.parseInt(h);
297 if (serverCount != stanzasSent) {
298 Log.d(Config.LOGTAG, account.getJid()
299 + ": session resumed with lost packages");
300 stanzasSent = serverCount;
301 } else {
302 Log.d(Config.LOGTAG, account.getJid()
303 + ": session resumed");
304 }
305 if (acknowledgedListener != null) {
306 for (int i = 0; i < messageReceipts.size(); ++i) {
307 if (serverCount >= messageReceipts.keyAt(i)) {
308 acknowledgedListener.onMessageAcknowledged(
309 account, messageReceipts.valueAt(i));
310 }
311 }
312 }
313 messageReceipts.clear();
314 } catch (NumberFormatException e) {
315
316 }
317 sendInitialPing();
318
319 } else if (nextTag.isStart("r")) {
320 tagReader.readElement(nextTag);
321 AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
322 tagWriter.writeStanzaAsync(ack);
323 } else if (nextTag.isStart("a")) {
324 Element ack = tagReader.readElement(nextTag);
325 lastPaketReceived = SystemClock.elapsedRealtime();
326 int serverSequence = Integer.parseInt(ack.getAttribute("h"));
327 String msgId = this.messageReceipts.get(serverSequence);
328 if (msgId != null) {
329 if (this.acknowledgedListener != null) {
330 this.acknowledgedListener.onMessageAcknowledged(
331 account, msgId);
332 }
333 this.messageReceipts.remove(serverSequence);
334 }
335 } else if (nextTag.isStart("failed")) {
336 tagReader.readElement(nextTag);
337 Log.d(Config.LOGTAG, account.getJid() + ": resumption failed");
338 streamId = null;
339 if (account.getStatus() != Account.STATUS_ONLINE) {
340 sendBindRequest();
341 }
342 } else if (nextTag.isStart("iq")) {
343 processIq(nextTag);
344 } else if (nextTag.isStart("message")) {
345 processMessage(nextTag);
346 } else if (nextTag.isStart("presence")) {
347 processPresence(nextTag);
348 }
349 nextTag = tagReader.readTag();
350 }
351 if (account.getStatus() == Account.STATUS_ONLINE) {
352 account.setStatus(Account.STATUS_OFFLINE);
353 if (statusListener != null) {
354 statusListener.onStatusChanged(account);
355 }
356 }
357 }
358
359 private void sendInitialPing() {
360 Log.d(Config.LOGTAG, account.getJid() + ": sending intial ping");
361 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
362 iq.setFrom(account.getFullJid());
363 iq.addChild("ping", "urn:xmpp:ping");
364 this.sendIqPacket(iq, new OnIqPacketReceived() {
365
366 @Override
367 public void onIqPacketReceived(Account account, IqPacket packet) {
368 Log.d(Config.LOGTAG, account.getJid()
369 + ": online with resource " + account.getResource());
370 changeStatus(Account.STATUS_ONLINE);
371 }
372 });
373 }
374
375 private Element processPacket(Tag currentTag, int packetType)
376 throws XmlPullParserException, IOException {
377 Element element;
378 switch (packetType) {
379 case PACKET_IQ:
380 element = new IqPacket();
381 break;
382 case PACKET_MESSAGE:
383 element = new MessagePacket();
384 break;
385 case PACKET_PRESENCE:
386 element = new PresencePacket();
387 break;
388 default:
389 return null;
390 }
391 element.setAttributes(currentTag.getAttributes());
392 Tag nextTag = tagReader.readTag();
393 if (nextTag == null) {
394 throw new IOException("interrupted mid tag");
395 }
396 while (!nextTag.isEnd(element.getName())) {
397 if (!nextTag.isNo()) {
398 Element child = tagReader.readElement(nextTag);
399 String type = currentTag.getAttribute("type");
400 if (packetType == PACKET_IQ
401 && "jingle".equals(child.getName())
402 && ("set".equalsIgnoreCase(type) || "get"
403 .equalsIgnoreCase(type))) {
404 element = new JinglePacket();
405 element.setAttributes(currentTag.getAttributes());
406 }
407 element.addChild(child);
408 }
409 nextTag = tagReader.readTag();
410 if (nextTag == null) {
411 throw new IOException("interrupted mid tag");
412 }
413 }
414 ++stanzasReceived;
415 lastPaketReceived = SystemClock.elapsedRealtime();
416 return element;
417 }
418
419 private void processIq(Tag currentTag) throws XmlPullParserException,
420 IOException {
421 IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
422
423 if (packet.getId() == null) {
424 return; // an iq packet without id is definitely invalid
425 }
426
427 if (packet instanceof JinglePacket) {
428 if (this.jingleListener != null) {
429 this.jingleListener.onJinglePacketReceived(account,
430 (JinglePacket) packet);
431 }
432 } else {
433 if (packetCallbacks.containsKey(packet.getId())) {
434 if (packetCallbacks.get(packet.getId()) instanceof OnIqPacketReceived) {
435 ((OnIqPacketReceived) packetCallbacks.get(packet.getId()))
436 .onIqPacketReceived(account, packet);
437 }
438
439 packetCallbacks.remove(packet.getId());
440 } else if ((packet.getType() == IqPacket.TYPE_GET || packet
441 .getType() == IqPacket.TYPE_SET)
442 && this.unregisteredIqListener != null) {
443 this.unregisteredIqListener.onIqPacketReceived(account, packet);
444 }
445 }
446 }
447
448 private void processMessage(Tag currentTag) throws XmlPullParserException,
449 IOException {
450 MessagePacket packet = (MessagePacket) processPacket(currentTag,
451 PACKET_MESSAGE);
452 String id = packet.getAttribute("id");
453 if ((id != null) && (packetCallbacks.containsKey(id))) {
454 if (packetCallbacks.get(id) instanceof OnMessagePacketReceived) {
455 ((OnMessagePacketReceived) packetCallbacks.get(id))
456 .onMessagePacketReceived(account, packet);
457 }
458 packetCallbacks.remove(id);
459 } else if (this.messageListener != null) {
460 this.messageListener.onMessagePacketReceived(account, packet);
461 }
462 }
463
464 private void processPresence(Tag currentTag) throws XmlPullParserException,
465 IOException {
466 PresencePacket packet = (PresencePacket) processPacket(currentTag,
467 PACKET_PRESENCE);
468 String id = packet.getAttribute("id");
469 if ((id != null) && (packetCallbacks.containsKey(id))) {
470 if (packetCallbacks.get(id) instanceof OnPresencePacketReceived) {
471 ((OnPresencePacketReceived) packetCallbacks.get(id))
472 .onPresencePacketReceived(account, packet);
473 }
474 packetCallbacks.remove(id);
475 } else if (this.presenceListener != null) {
476 this.presenceListener.onPresencePacketReceived(account, packet);
477 }
478 }
479
480 private void sendCompressionZlib() throws IOException {
481 Element compress = new Element("compress");
482 compress.setAttribute("xmlns", "http://jabber.org/protocol/compress");
483 compress.addChild("method").setContent("zlib");
484 tagWriter.writeElement(compress);
485 }
486
487 private void switchOverToZLib(Tag currentTag)
488 throws XmlPullParserException, IOException,
489 NoSuchAlgorithmException {
490 tagReader.readTag(); // read tag close
491 tagWriter.setOutputStream(new ZLibOutputStream(tagWriter
492 .getOutputStream()));
493 tagReader
494 .setInputStream(new ZLibInputStream(tagReader.getInputStream()));
495
496 sendStartStream();
497 Log.d(Config.LOGTAG, account.getJid() + ": compression enabled");
498 usingCompression = true;
499 processStream(tagReader.readTag());
500 }
501
502 private void sendStartTLS() throws IOException {
503 Tag startTLS = Tag.empty("starttls");
504 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
505 tagWriter.writeTag(startTLS);
506 }
507
508 private void switchOverToTls(Tag currentTag) throws XmlPullParserException,
509 IOException {
510 tagReader.readTag();
511 try {
512 SSLContext sc = SSLContext.getInstance("TLS");
513 sc.init(null,
514 new X509TrustManager[] { this.mMemorizingTrustManager },
515 mRandom);
516 SSLSocketFactory factory = sc.getSocketFactory();
517
518 HostnameVerifier verifier = this.mMemorizingTrustManager
519 .wrapHostnameVerifier(new org.apache.http.conn.ssl.StrictHostnameVerifier());
520 SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,
521 socket.getInetAddress().getHostAddress(), socket.getPort(),
522 true);
523
524 // Support all protocols except legacy SSL.
525 // The min SDK version prevents us having to worry about SSLv2. In future, this may be
526 // true of SSLv3 as well.
527 final List<String> supportedProtocols = new LinkedList<String>(Arrays.asList(
528 sslSocket.getSupportedProtocols()));
529 supportedProtocols.remove("SSLv3");
530 sslSocket.setEnabledProtocols(supportedProtocols.toArray(new String[supportedProtocols.size()]));
531
532 if (verifier != null
533 && !verifier.verify(account.getServer(),
534 sslSocket.getSession())) {
535 Log.d(Config.LOGTAG, account.getJid()
536 + ": host mismatch in TLS connection");
537 sslSocket.close();
538 throw new IOException();
539 }
540 tagReader.setInputStream(sslSocket.getInputStream());
541 tagWriter.setOutputStream(sslSocket.getOutputStream());
542 sendStartStream();
543 Log.d(Config.LOGTAG, account.getJid()
544 + ": TLS connection established");
545 processStream(tagReader.readTag());
546 sslSocket.close();
547 } catch (NoSuchAlgorithmException e1) {
548 e1.printStackTrace();
549 } catch (KeyManagementException e) {
550 e.printStackTrace();
551 }
552 }
553
554 private void sendSaslAuthPlain() throws IOException {
555 String saslString = CryptoHelper.saslPlain(account.getUsername(),
556 account.getPassword());
557 Element auth = new Element("auth");
558 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
559 auth.setAttribute("mechanism", "PLAIN");
560 auth.setContent(saslString);
561 tagWriter.writeElement(auth);
562 }
563
564 private void sendSaslAuthDigestMd5() throws IOException {
565 Element auth = new Element("auth");
566 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
567 auth.setAttribute("mechanism", "DIGEST-MD5");
568 tagWriter.writeElement(auth);
569 }
570
571 private void processStreamFeatures(Tag currentTag)
572 throws XmlPullParserException, IOException {
573 this.streamFeatures = tagReader.readElement(currentTag);
574 if (this.streamFeatures.hasChild("starttls")
575 && account.isOptionSet(Account.OPTION_USETLS)) {
576 sendStartTLS();
577 } else if (compressionAvailable()) {
578 sendCompressionZlib();
579 } else if (this.streamFeatures.hasChild("register")
580 && (account.isOptionSet(Account.OPTION_REGISTER))) {
581 sendRegistryRequest();
582 } else if (!this.streamFeatures.hasChild("register")
583 && (account.isOptionSet(Account.OPTION_REGISTER))) {
584 changeStatus(Account.STATUS_REGISTRATION_NOT_SUPPORTED);
585 disconnect(true);
586 } else if (this.streamFeatures.hasChild("mechanisms")
587 && shouldAuthenticate) {
588 List<String> mechanisms = extractMechanisms(streamFeatures
589 .findChild("mechanisms"));
590 if (mechanisms.contains("PLAIN")) {
591 sendSaslAuthPlain();
592 } else if (mechanisms.contains("DIGEST-MD5")) {
593 sendSaslAuthDigestMd5();
594 }
595 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:"
596 + smVersion)
597 && streamId != null) {
598 ResumePacket resume = new ResumePacket(this.streamId,
599 stanzasReceived, smVersion);
600 this.tagWriter.writeStanzaAsync(resume);
601 } else if (this.streamFeatures.hasChild("bind") && shouldBind) {
602 sendBindRequest();
603 }
604 }
605
606 private boolean compressionAvailable() {
607 if (!this.streamFeatures.hasChild("compression",
608 "http://jabber.org/features/compress"))
609 return false;
610 if (!ZLibOutputStream.SUPPORTED)
611 return false;
612 if (!account.isOptionSet(Account.OPTION_USECOMPRESSION))
613 return false;
614
615 Element compression = this.streamFeatures.findChild("compression",
616 "http://jabber.org/features/compress");
617 for (Element child : compression.getChildren()) {
618 if (!"method".equals(child.getName()))
619 continue;
620
621 if ("zlib".equalsIgnoreCase(child.getContent())) {
622 return true;
623 }
624 }
625 return false;
626 }
627
628 private List<String> extractMechanisms(Element stream) {
629 ArrayList<String> mechanisms = new ArrayList<String>(stream
630 .getChildren().size());
631 for (Element child : stream.getChildren()) {
632 mechanisms.add(child.getContent());
633 }
634 return mechanisms;
635 }
636
637 private void sendRegistryRequest() {
638 IqPacket register = new IqPacket(IqPacket.TYPE_GET);
639 register.query("jabber:iq:register");
640 register.setTo(account.getServer());
641 sendIqPacket(register, new OnIqPacketReceived() {
642
643 @Override
644 public void onIqPacketReceived(Account account, IqPacket packet) {
645 Element instructions = packet.query().findChild("instructions");
646 if (packet.query().hasChild("username")
647 && (packet.query().hasChild("password"))) {
648 IqPacket register = new IqPacket(IqPacket.TYPE_SET);
649 Element username = new Element("username")
650 .setContent(account.getUsername());
651 Element password = new Element("password")
652 .setContent(account.getPassword());
653 register.query("jabber:iq:register").addChild(username);
654 register.query().addChild(password);
655 sendIqPacket(register, new OnIqPacketReceived() {
656
657 @Override
658 public void onIqPacketReceived(Account account,
659 IqPacket packet) {
660 if (packet.getType() == IqPacket.TYPE_RESULT) {
661 account.setOption(Account.OPTION_REGISTER,
662 false);
663 changeStatus(Account.STATUS_REGISTRATION_SUCCESSFULL);
664 } else if (packet.hasChild("error")
665 && (packet.findChild("error")
666 .hasChild("conflict"))) {
667 changeStatus(Account.STATUS_REGISTRATION_CONFLICT);
668 } else {
669 changeStatus(Account.STATUS_REGISTRATION_FAILED);
670 Log.d(Config.LOGTAG, packet.toString());
671 }
672 disconnect(true);
673 }
674 });
675 } else {
676 changeStatus(Account.STATUS_REGISTRATION_FAILED);
677 disconnect(true);
678 Log.d(Config.LOGTAG, account.getJid()
679 + ": could not register. instructions are"
680 + instructions.getContent());
681 }
682 }
683 });
684 }
685
686 private void sendBindRequest() throws IOException {
687 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
688 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
689 .addChild("resource").setContent(account.getResource());
690 this.sendUnboundIqPacket(iq, new OnIqPacketReceived() {
691 @Override
692 public void onIqPacketReceived(Account account, IqPacket packet) {
693 Element bind = packet.findChild("bind");
694 if (bind != null) {
695 Element jid = bind.findChild("jid");
696 if (jid != null && jid.getContent() != null) {
697 account.setResource(jid.getContent().split("/", 2)[1]);
698 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
699 smVersion = 3;
700 EnablePacket enable = new EnablePacket(smVersion);
701 tagWriter.writeStanzaAsync(enable);
702 stanzasSent = 0;
703 messageReceipts.clear();
704 } else if (streamFeatures.hasChild("sm",
705 "urn:xmpp:sm:2")) {
706 smVersion = 2;
707 EnablePacket enable = new EnablePacket(smVersion);
708 tagWriter.writeStanzaAsync(enable);
709 stanzasSent = 0;
710 messageReceipts.clear();
711 }
712 sendServiceDiscoveryInfo(account.getServer());
713 sendServiceDiscoveryItems(account.getServer());
714 if (bindListener != null) {
715 bindListener.onBind(account);
716 }
717 sendInitialPing();
718 } else {
719 disconnect(true);
720 }
721 } else {
722 disconnect(true);
723 }
724 }
725 });
726 if (this.streamFeatures.hasChild("session")) {
727 Log.d(Config.LOGTAG, account.getJid()
728 + ": sending deprecated session");
729 IqPacket startSession = new IqPacket(IqPacket.TYPE_SET);
730 startSession.addChild("session",
731 "urn:ietf:params:xml:ns:xmpp-session");
732 this.sendUnboundIqPacket(startSession, null);
733 }
734 }
735
736 private void sendServiceDiscoveryInfo(final String server) {
737 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
738 iq.setTo(server);
739 iq.query("http://jabber.org/protocol/disco#info");
740 this.sendIqPacket(iq, new OnIqPacketReceived() {
741
742 @Override
743 public void onIqPacketReceived(Account account, IqPacket packet) {
744 List<Element> elements = packet.query().getChildren();
745 List<String> features = new ArrayList<String>();
746 for (int i = 0; i < elements.size(); ++i) {
747 if (elements.get(i).getName().equals("feature")) {
748 features.add(elements.get(i).getAttribute("var"));
749 }
750 }
751 disco.put(server, features);
752
753 if (account.getServer().equals(server)) {
754 enableAdvancedStreamFeatures();
755 }
756 }
757 });
758 }
759
760 private void enableAdvancedStreamFeatures() {
761 if (getFeatures().carbons()) {
762 sendEnableCarbons();
763 }
764 }
765
766 private void sendServiceDiscoveryItems(final String server) {
767 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
768 iq.setTo(server);
769 iq.query("http://jabber.org/protocol/disco#items");
770 this.sendIqPacket(iq, new OnIqPacketReceived() {
771
772 @Override
773 public void onIqPacketReceived(Account account, IqPacket packet) {
774 List<Element> elements = packet.query().getChildren();
775 for (int i = 0; i < elements.size(); ++i) {
776 if (elements.get(i).getName().equals("item")) {
777 String jid = elements.get(i).getAttribute("jid");
778 sendServiceDiscoveryInfo(jid);
779 }
780 }
781 }
782 });
783 }
784
785 private void sendEnableCarbons() {
786 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
787 iq.addChild("enable", "urn:xmpp:carbons:2");
788 this.sendIqPacket(iq, new OnIqPacketReceived() {
789
790 @Override
791 public void onIqPacketReceived(Account account, IqPacket packet) {
792 if (!packet.hasChild("error")) {
793 Log.d(Config.LOGTAG, account.getJid()
794 + ": successfully enabled carbons");
795 } else {
796 Log.d(Config.LOGTAG, account.getJid()
797 + ": error enableing carbons " + packet.toString());
798 }
799 }
800 });
801 }
802
803 private void processStreamError(Tag currentTag)
804 throws XmlPullParserException, IOException {
805 Element streamError = tagReader.readElement(currentTag);
806 if (streamError != null && streamError.hasChild("conflict")) {
807 String resource = account.getResource().split("\\.")[0];
808 account.setResource(resource + "." + nextRandomId());
809 Log.d(Config.LOGTAG,
810 account.getJid() + ": switching resource due to conflict ("
811 + account.getResource() + ")");
812 }
813 }
814
815 private void sendStartStream() throws IOException {
816 Tag stream = Tag.start("stream:stream");
817 stream.setAttribute("from", account.getJid());
818 stream.setAttribute("to", account.getServer());
819 stream.setAttribute("version", "1.0");
820 stream.setAttribute("xml:lang", "en");
821 stream.setAttribute("xmlns", "jabber:client");
822 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
823 tagWriter.writeTag(stream);
824 }
825
826 private String nextRandomId() {
827 return new BigInteger(50, mRandom).toString(32);
828 }
829
830 public void sendIqPacket(IqPacket packet, OnIqPacketReceived callback) {
831 if (packet.getId() == null) {
832 String id = nextRandomId();
833 packet.setAttribute("id", id);
834 }
835 packet.setFrom(account.getFullJid());
836 this.sendPacket(packet, callback);
837 }
838
839 public void sendUnboundIqPacket(IqPacket packet, OnIqPacketReceived callback) {
840 if (packet.getId() == null) {
841 String id = nextRandomId();
842 packet.setAttribute("id", id);
843 }
844 this.sendPacket(packet, callback);
845 }
846
847 public void sendMessagePacket(MessagePacket packet) {
848 this.sendPacket(packet, null);
849 }
850
851 public void sendPresencePacket(PresencePacket packet) {
852 this.sendPacket(packet, null);
853 }
854
855 private synchronized void sendPacket(final AbstractStanza packet,
856 PacketReceived callback) {
857 if (packet.getName().equals("iq") || packet.getName().equals("message")
858 || packet.getName().equals("presence")) {
859 ++stanzasSent;
860 }
861 tagWriter.writeStanzaAsync(packet);
862 if (packet instanceof MessagePacket && packet.getId() != null
863 && this.streamId != null) {
864 Log.d(Config.LOGTAG, "request delivery report for stanza "
865 + stanzasSent);
866 this.messageReceipts.put(stanzasSent, packet.getId());
867 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
868 }
869 if (callback != null) {
870 if (packet.getId() == null) {
871 packet.setId(nextRandomId());
872 }
873 packetCallbacks.put(packet.getId(), callback);
874 }
875 }
876
877 public void sendPing() {
878 if (streamFeatures.hasChild("sm")) {
879 tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
880 } else {
881 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
882 iq.setFrom(account.getFullJid());
883 iq.addChild("ping", "urn:xmpp:ping");
884 this.sendIqPacket(iq, null);
885 }
886 this.lastPingSent = SystemClock.elapsedRealtime();
887 }
888
889 public void setOnMessagePacketReceivedListener(
890 OnMessagePacketReceived listener) {
891 this.messageListener = listener;
892 }
893
894 public void setOnUnregisteredIqPacketReceivedListener(
895 OnIqPacketReceived listener) {
896 this.unregisteredIqListener = listener;
897 }
898
899 public void setOnPresencePacketReceivedListener(
900 OnPresencePacketReceived listener) {
901 this.presenceListener = listener;
902 }
903
904 public void setOnJinglePacketReceivedListener(
905 OnJinglePacketReceived listener) {
906 this.jingleListener = listener;
907 }
908
909 public void setOnStatusChangedListener(OnStatusChanged listener) {
910 this.statusListener = listener;
911 }
912
913 public void setOnBindListener(OnBindListener listener) {
914 this.bindListener = listener;
915 }
916
917 public void setOnMessageAcknowledgeListener(OnMessageAcknowledged listener) {
918 this.acknowledgedListener = listener;
919 }
920
921 public void disconnect(boolean force) {
922 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting");
923 try {
924 if (force) {
925 socket.close();
926 return;
927 }
928 new Thread(new Runnable() {
929
930 @Override
931 public void run() {
932 if (tagWriter.isActive()) {
933 tagWriter.finish();
934 try {
935 while (!tagWriter.finished()) {
936 Log.d(Config.LOGTAG, "not yet finished");
937 Thread.sleep(100);
938 }
939 tagWriter.writeTag(Tag.end("stream:stream"));
940 socket.close();
941 } catch (IOException e) {
942 Log.d(Config.LOGTAG,
943 "io exception during disconnect");
944 } catch (InterruptedException e) {
945 Log.d(Config.LOGTAG, "interrupted");
946 }
947 }
948 }
949 }).start();
950 } catch (IOException e) {
951 Log.d(Config.LOGTAG, "io exception during disconnect");
952 }
953 }
954
955 public List<String> findDiscoItemsByFeature(String feature) {
956 List<String> items = new ArrayList<String>();
957 for (Entry<String, List<String>> cursor : disco.entrySet()) {
958 if (cursor.getValue().contains(feature)) {
959 items.add(cursor.getKey());
960 }
961 }
962 return items;
963 }
964
965 public String findDiscoItemByFeature(String feature) {
966 List<String> items = findDiscoItemsByFeature(feature);
967 if (items.size() >= 1) {
968 return items.get(0);
969 }
970 return null;
971 }
972
973 public void r() {
974 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
975 }
976
977 public String getMucServer() {
978 return findDiscoItemByFeature("http://jabber.org/protocol/muc");
979 }
980
981 public int getTimeToNextAttempt() {
982 int interval = (int) (25 * Math.pow(1.5, attempt));
983 int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
984 return interval - secondsSinceLast;
985 }
986
987 public int getAttempt() {
988 return this.attempt;
989 }
990
991 public Features getFeatures() {
992 return this.features;
993 }
994
995 public class Features {
996 XmppConnection connection;
997
998 public Features(XmppConnection connection) {
999 this.connection = connection;
1000 }
1001
1002 private boolean hasDiscoFeature(String server, String feature) {
1003 if (!connection.disco.containsKey(server)) {
1004 return false;
1005 }
1006 return connection.disco.get(server).contains(feature);
1007 }
1008
1009 public boolean carbons() {
1010 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
1011 }
1012
1013 public boolean sm() {
1014 return streamId != null;
1015 }
1016
1017 public boolean csi() {
1018 if (connection.streamFeatures == null) {
1019 return false;
1020 } else {
1021 return connection.streamFeatures.hasChild("csi",
1022 "urn:xmpp:csi:0");
1023 }
1024 }
1025
1026 public boolean pubsub() {
1027 return hasDiscoFeature(account.getServer(),
1028 "http://jabber.org/protocol/pubsub#publish");
1029 }
1030
1031 public boolean rosterVersioning() {
1032 if (connection.streamFeatures == null) {
1033 return false;
1034 } else {
1035 return connection.streamFeatures.hasChild("ver");
1036 }
1037 }
1038
1039 public boolean streamhost() {
1040 return connection
1041 .findDiscoItemByFeature("http://jabber.org/protocol/bytestreams") != null;
1042 }
1043
1044 public boolean compression() {
1045 return connection.usingCompression;
1046 }
1047 }
1048
1049 public long getLastSessionEstablished() {
1050 long diff;
1051 if (this.lastSessionStarted == 0) {
1052 diff = SystemClock.elapsedRealtime() - this.lastConnect;
1053 } else {
1054 diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1055 }
1056 return System.currentTimeMillis() - diff;
1057 }
1058
1059 public long getLastConnect() {
1060 return this.lastConnect;
1061 }
1062
1063 public long getLastPingSent() {
1064 return this.lastPingSent;
1065 }
1066
1067 public long getLastPacketReceived() {
1068 return this.lastPaketReceived;
1069 }
1070
1071 public void sendActive() {
1072 this.sendPacket(new ActivePacket(), null);
1073 }
1074
1075 public void sendInactive() {
1076 this.sendPacket(new InactivePacket(), null);
1077 }
1078}