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.LinkedList;
17import java.util.List;
18import java.util.Map.Entry;
19
20import javax.net.ssl.HostnameVerifier;
21import javax.net.ssl.SSLContext;
22import javax.net.ssl.SSLSocket;
23import javax.net.ssl.SSLSocketFactory;
24
25import javax.net.ssl.X509TrustManager;
26
27import org.xmlpull.v1.XmlPullParserException;
28
29import de.duenndns.ssl.MemorizingTrustManager;
30
31import android.content.Context;
32import android.content.SharedPreferences;
33import android.os.Bundle;
34import android.os.PowerManager;
35import android.os.PowerManager.WakeLock;
36import android.os.SystemClock;
37import android.preference.PreferenceManager;
38import android.util.Log;
39import android.util.SparseArray;
40import eu.siacs.conversations.Config;
41import eu.siacs.conversations.entities.Account;
42import eu.siacs.conversations.services.XmppConnectionService;
43import eu.siacs.conversations.ui.StartConversationActivity;
44import eu.siacs.conversations.utils.CryptoHelper;
45import eu.siacs.conversations.utils.DNSHelper;
46import eu.siacs.conversations.utils.zlib.ZLibOutputStream;
47import eu.siacs.conversations.utils.zlib.ZLibInputStream;
48import eu.siacs.conversations.xml.Element;
49import eu.siacs.conversations.xml.Tag;
50import eu.siacs.conversations.xml.TagWriter;
51import eu.siacs.conversations.xml.XmlReader;
52import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
53import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
54import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
55import eu.siacs.conversations.xmpp.stanzas.IqPacket;
56import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
57import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
58import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
59import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
60import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
61import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
62import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
63import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
64
65public class XmppConnection implements Runnable {
66
67 protected Account account;
68
69 private WakeLock wakeLock;
70
71 private SecureRandom mRandom;
72
73 private Socket socket;
74 private XmlReader tagReader;
75 private TagWriter tagWriter;
76
77 private Features features = new Features(this);
78
79 private boolean shouldBind = true;
80 private boolean shouldAuthenticate = true;
81 private Element streamFeatures;
82 private HashMap<String, List<String>> disco = new HashMap<String, List<String>>();
83
84 private String streamId = null;
85 private int smVersion = 3;
86 private SparseArray<String> messageReceipts = new SparseArray<String>();
87
88 private boolean usingCompression = false;
89 private boolean usingEncryption = false;
90
91 private int stanzasReceived = 0;
92 private int stanzasSent = 0;
93
94 private long lastPaketReceived = 0;
95 private long lastPingSent = 0;
96 private long lastConnect = 0;
97 private long lastSessionStarted = 0;
98
99 private int attempt = 0;
100
101 private static final int PACKET_IQ = 0;
102 private static final int PACKET_MESSAGE = 1;
103 private static final int PACKET_PRESENCE = 2;
104
105 private Hashtable<String, PacketReceived> packetCallbacks = new Hashtable<String, PacketReceived>();
106 private OnPresencePacketReceived presenceListener = null;
107 private OnJinglePacketReceived jingleListener = null;
108 private OnIqPacketReceived unregisteredIqListener = null;
109 private OnMessagePacketReceived messageListener = null;
110 private OnStatusChanged statusListener = null;
111 private OnBindListener bindListener = null;
112 private OnMessageAcknowledged acknowledgedListener = null;
113 private MemorizingTrustManager mMemorizingTrustManager;
114 private final Context applicationContext;
115
116 public XmppConnection(Account account, XmppConnectionService service) {
117 this.mRandom = service.getRNG();
118 this.mMemorizingTrustManager = service.getMemorizingTrustManager();
119 this.account = account;
120 this.wakeLock = service.getPowerManager().newWakeLock(
121 PowerManager.PARTIAL_WAKE_LOCK, account.getJid());
122 tagWriter = new TagWriter();
123 applicationContext = service.getApplicationContext();
124 }
125
126 protected void changeStatus(int nextStatus) {
127 if (account.getStatus() != nextStatus) {
128 if ((nextStatus == Account.STATUS_OFFLINE)
129 && (account.getStatus() != Account.STATUS_CONNECTING)
130 && (account.getStatus() != Account.STATUS_ONLINE)
131 && (account.getStatus() != Account.STATUS_DISABLED)) {
132 return;
133 }
134 if (nextStatus == Account.STATUS_ONLINE) {
135 this.attempt = 0;
136 }
137 account.setStatus(nextStatus);
138 if (statusListener != null) {
139 statusListener.onStatusChanged(account);
140 }
141 }
142 }
143
144 protected void connect() {
145 Log.d(Config.LOGTAG, account.getJid() + ": connecting");
146 usingCompression = false;
147 usingEncryption = false;
148 lastConnect = SystemClock.elapsedRealtime();
149 lastPingSent = SystemClock.elapsedRealtime();
150 this.attempt++;
151 try {
152 shouldAuthenticate = shouldBind = !account
153 .isOptionSet(Account.OPTION_REGISTER);
154 tagReader = new XmlReader(wakeLock);
155 tagWriter = new TagWriter();
156 packetCallbacks.clear();
157 this.changeStatus(Account.STATUS_CONNECTING);
158 Bundle namePort = DNSHelper.getSRVRecord(account.getServer());
159 if ("timeout".equals(namePort.getString("error"))) {
160 Log.d(Config.LOGTAG, account.getJid() + ": dns timeout");
161 this.changeStatus(Account.STATUS_OFFLINE);
162 return;
163 }
164 String srvRecordServer = namePort.getString("name");
165 String srvIpServer = namePort.getString("ipv4");
166 int srvRecordPort = namePort.getInt("port");
167 if (srvRecordServer != null) {
168 if (srvIpServer != null) {
169 Log.d(Config.LOGTAG, account.getJid()
170 + ": using values from dns " + srvRecordServer
171 + "[" + srvIpServer + "]:" + srvRecordPort);
172 socket = new Socket(srvIpServer, srvRecordPort);
173 } else {
174 boolean socketError = true;
175 int srvIndex = 0;
176 while (socketError && namePort.containsKey("name" + srvIndex)){
177 try {
178 srvRecordServer = namePort.getString("name" + srvIndex);
179 srvRecordPort = namePort.getInt("port" + srvIndex);
180 Log.d(Config.LOGTAG, account.getJid()
181 + ": using values from dns " + srvRecordServer
182 + ":" + srvRecordPort);
183 socket = new Socket(srvRecordServer, srvRecordPort);
184 socketError = false;
185 } catch (UnknownHostException e) {
186 srvIndex++;
187 } catch (IOException e) {
188 srvIndex++;
189 }
190 }
191 }
192 } else if (namePort.containsKey("error")
193 && "nosrv".equals(namePort.getString("error", null))) {
194 socket = new Socket(account.getServer(), 5222);
195 } else {
196 Log.d(Config.LOGTAG, account.getJid()
197 + ": timeout in DNS resolution");
198 changeStatus(Account.STATUS_OFFLINE);
199 return;
200 }
201 OutputStream out = socket.getOutputStream();
202 tagWriter.setOutputStream(out);
203 InputStream in = socket.getInputStream();
204 tagReader.setInputStream(in);
205 tagWriter.beginDocument();
206 sendStartStream();
207 Tag nextTag;
208 while ((nextTag = tagReader.readTag()) != null) {
209 if (nextTag.isStart("stream")) {
210 processStream(nextTag);
211 break;
212 } else {
213 Log.d(Config.LOGTAG,
214 "found unexpected tag: " + nextTag.getName());
215 return;
216 }
217 }
218 if (socket.isConnected()) {
219 socket.close();
220 }
221 } catch (UnknownHostException e) {
222 this.changeStatus(Account.STATUS_SERVER_NOT_FOUND);
223 if (wakeLock.isHeld()) {
224 try {
225 wakeLock.release();
226 } catch (RuntimeException re) {
227 }
228 }
229 return;
230 } catch (IOException e) {
231 this.changeStatus(Account.STATUS_OFFLINE);
232 if (wakeLock.isHeld()) {
233 try {
234 wakeLock.release();
235 } catch (RuntimeException re) {
236 }
237 }
238 return;
239 } catch (NoSuchAlgorithmException e) {
240 this.changeStatus(Account.STATUS_OFFLINE);
241 Log.d(Config.LOGTAG, "compression exception " + e.getMessage());
242 if (wakeLock.isHeld()) {
243 try {
244 wakeLock.release();
245 } catch (RuntimeException re) {
246 }
247 }
248 return;
249 } catch (XmlPullParserException e) {
250 this.changeStatus(Account.STATUS_OFFLINE);
251 Log.d(Config.LOGTAG, "xml exception " + e.getMessage());
252 if (wakeLock.isHeld()) {
253 try {
254 wakeLock.release();
255 } catch (RuntimeException re) {
256 }
257 }
258 return;
259 }
260
261 }
262
263 @Override
264 public void run() {
265 connect();
266 }
267
268 private void processStream(Tag currentTag) throws XmlPullParserException,
269 IOException, NoSuchAlgorithmException {
270 Tag nextTag = tagReader.readTag();
271 while ((nextTag != null) && (!nextTag.isEnd("stream"))) {
272 if (nextTag.isStart("error")) {
273 processStreamError(nextTag);
274 } else if (nextTag.isStart("features")) {
275 processStreamFeatures(nextTag);
276 } else if (nextTag.isStart("proceed")) {
277 switchOverToTls(nextTag);
278 } else if (nextTag.isStart("compressed")) {
279 switchOverToZLib(nextTag);
280 } else if (nextTag.isStart("success")) {
281 Log.d(Config.LOGTAG, account.getJid() + ": logged in");
282 tagReader.readTag();
283 tagReader.reset();
284 sendStartStream();
285 processStream(tagReader.readTag());
286 break;
287 } else if (nextTag.isStart("failure")) {
288 tagReader.readElement(nextTag);
289 changeStatus(Account.STATUS_UNAUTHORIZED);
290 } else if (nextTag.isStart("challenge")) {
291 String challange = tagReader.readElement(nextTag).getContent();
292 Element response = new Element("response");
293 response.setAttribute("xmlns",
294 "urn:ietf:params:xml:ns:xmpp-sasl");
295 response.setContent(CryptoHelper.saslDigestMd5(account,
296 challange, mRandom));
297 tagWriter.writeElement(response);
298 } else if (nextTag.isStart("enabled")) {
299 Element enabled = tagReader.readElement(nextTag);
300 if ("true".equals(enabled.getAttribute("resume"))) {
301 this.streamId = enabled.getAttribute("id");
302 Log.d(Config.LOGTAG, account.getJid()
303 + ": stream managment(" + smVersion
304 + ") enabled (resumable)");
305 } else {
306 Log.d(Config.LOGTAG, account.getJid()
307 + ": stream managment(" + smVersion + ") enabled");
308 }
309 this.lastSessionStarted = SystemClock.elapsedRealtime();
310 this.stanzasReceived = 0;
311 RequestPacket r = new RequestPacket(smVersion);
312 tagWriter.writeStanzaAsync(r);
313 } else if (nextTag.isStart("resumed")) {
314 lastPaketReceived = SystemClock.elapsedRealtime();
315 Element resumed = tagReader.readElement(nextTag);
316 String h = resumed.getAttribute("h");
317 try {
318 int serverCount = Integer.parseInt(h);
319 if (serverCount != stanzasSent) {
320 Log.d(Config.LOGTAG, account.getJid()
321 + ": session resumed with lost packages");
322 stanzasSent = serverCount;
323 } else {
324 Log.d(Config.LOGTAG, account.getJid()
325 + ": session resumed");
326 }
327 if (acknowledgedListener != null) {
328 for (int i = 0; i < messageReceipts.size(); ++i) {
329 if (serverCount >= messageReceipts.keyAt(i)) {
330 acknowledgedListener.onMessageAcknowledged(
331 account, messageReceipts.valueAt(i));
332 }
333 }
334 }
335 messageReceipts.clear();
336 } catch (NumberFormatException e) {
337
338 }
339 sendInitialPing();
340
341 } else if (nextTag.isStart("r")) {
342 tagReader.readElement(nextTag);
343 AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
344 tagWriter.writeStanzaAsync(ack);
345 } else if (nextTag.isStart("a")) {
346 Element ack = tagReader.readElement(nextTag);
347 lastPaketReceived = SystemClock.elapsedRealtime();
348 int serverSequence = Integer.parseInt(ack.getAttribute("h"));
349 String msgId = this.messageReceipts.get(serverSequence);
350 if (msgId != null) {
351 if (this.acknowledgedListener != null) {
352 this.acknowledgedListener.onMessageAcknowledged(
353 account, msgId);
354 }
355 this.messageReceipts.remove(serverSequence);
356 }
357 } else if (nextTag.isStart("failed")) {
358 tagReader.readElement(nextTag);
359 Log.d(Config.LOGTAG, account.getJid() + ": resumption failed");
360 streamId = null;
361 if (account.getStatus() != Account.STATUS_ONLINE) {
362 sendBindRequest();
363 }
364 } else if (nextTag.isStart("iq")) {
365 processIq(nextTag);
366 } else if (nextTag.isStart("message")) {
367 processMessage(nextTag);
368 } else if (nextTag.isStart("presence")) {
369 processPresence(nextTag);
370 }
371 nextTag = tagReader.readTag();
372 }
373 if (account.getStatus() == Account.STATUS_ONLINE) {
374 account.setStatus(Account.STATUS_OFFLINE);
375 if (statusListener != null) {
376 statusListener.onStatusChanged(account);
377 }
378 }
379 }
380
381 private void sendInitialPing() {
382 Log.d(Config.LOGTAG, account.getJid() + ": sending intial ping");
383 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
384 iq.setFrom(account.getFullJid());
385 iq.addChild("ping", "urn:xmpp:ping");
386 this.sendIqPacket(iq, new OnIqPacketReceived() {
387
388 @Override
389 public void onIqPacketReceived(Account account, IqPacket packet) {
390 Log.d(Config.LOGTAG, account.getJid()
391 + ": online with resource " + account.getResource());
392 changeStatus(Account.STATUS_ONLINE);
393 }
394 });
395 }
396
397 private Element processPacket(Tag currentTag, int packetType)
398 throws XmlPullParserException, IOException {
399 Element element;
400 switch (packetType) {
401 case PACKET_IQ:
402 element = new IqPacket();
403 break;
404 case PACKET_MESSAGE:
405 element = new MessagePacket();
406 break;
407 case PACKET_PRESENCE:
408 element = new PresencePacket();
409 break;
410 default:
411 return null;
412 }
413 element.setAttributes(currentTag.getAttributes());
414 Tag nextTag = tagReader.readTag();
415 if (nextTag == null) {
416 throw new IOException("interrupted mid tag");
417 }
418 while (!nextTag.isEnd(element.getName())) {
419 if (!nextTag.isNo()) {
420 Element child = tagReader.readElement(nextTag);
421 String type = currentTag.getAttribute("type");
422 if (packetType == PACKET_IQ
423 && "jingle".equals(child.getName())
424 && ("set".equalsIgnoreCase(type) || "get"
425 .equalsIgnoreCase(type))) {
426 element = new JinglePacket();
427 element.setAttributes(currentTag.getAttributes());
428 }
429 element.addChild(child);
430 }
431 nextTag = tagReader.readTag();
432 if (nextTag == null) {
433 throw new IOException("interrupted mid tag");
434 }
435 }
436 ++stanzasReceived;
437 lastPaketReceived = SystemClock.elapsedRealtime();
438 return element;
439 }
440
441 private void processIq(Tag currentTag) throws XmlPullParserException,
442 IOException {
443 IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
444
445 if (packet.getId() == null) {
446 return; // an iq packet without id is definitely invalid
447 }
448
449 if (packet instanceof JinglePacket) {
450 if (this.jingleListener != null) {
451 this.jingleListener.onJinglePacketReceived(account,
452 (JinglePacket) packet);
453 }
454 } else {
455 if (packetCallbacks.containsKey(packet.getId())) {
456 if (packetCallbacks.get(packet.getId()) instanceof OnIqPacketReceived) {
457 ((OnIqPacketReceived) packetCallbacks.get(packet.getId()))
458 .onIqPacketReceived(account, packet);
459 }
460
461 packetCallbacks.remove(packet.getId());
462 } else if ((packet.getType() == IqPacket.TYPE_GET || packet
463 .getType() == IqPacket.TYPE_SET)
464 && this.unregisteredIqListener != null) {
465 this.unregisteredIqListener.onIqPacketReceived(account, packet);
466 }
467 }
468 }
469
470 private void processMessage(Tag currentTag) throws XmlPullParserException,
471 IOException {
472 MessagePacket packet = (MessagePacket) processPacket(currentTag,
473 PACKET_MESSAGE);
474 String id = packet.getAttribute("id");
475 if ((id != null) && (packetCallbacks.containsKey(id))) {
476 if (packetCallbacks.get(id) instanceof OnMessagePacketReceived) {
477 ((OnMessagePacketReceived) packetCallbacks.get(id))
478 .onMessagePacketReceived(account, packet);
479 }
480 packetCallbacks.remove(id);
481 } else if (this.messageListener != null) {
482 this.messageListener.onMessagePacketReceived(account, packet);
483 }
484 }
485
486 private void processPresence(Tag currentTag) throws XmlPullParserException,
487 IOException {
488 PresencePacket packet = (PresencePacket) processPacket(currentTag,
489 PACKET_PRESENCE);
490 String id = packet.getAttribute("id");
491 if ((id != null) && (packetCallbacks.containsKey(id))) {
492 if (packetCallbacks.get(id) instanceof OnPresencePacketReceived) {
493 ((OnPresencePacketReceived) packetCallbacks.get(id))
494 .onPresencePacketReceived(account, packet);
495 }
496 packetCallbacks.remove(id);
497 } else if (this.presenceListener != null) {
498 this.presenceListener.onPresencePacketReceived(account, packet);
499 }
500 }
501
502 private void sendCompressionZlib() throws IOException {
503 Element compress = new Element("compress");
504 compress.setAttribute("xmlns", "http://jabber.org/protocol/compress");
505 compress.addChild("method").setContent("zlib");
506 tagWriter.writeElement(compress);
507 }
508
509 private void switchOverToZLib(Tag currentTag)
510 throws XmlPullParserException, IOException,
511 NoSuchAlgorithmException {
512 tagReader.readTag(); // read tag close
513 tagWriter.setOutputStream(new ZLibOutputStream(tagWriter
514 .getOutputStream()));
515 tagReader
516 .setInputStream(new ZLibInputStream(tagReader.getInputStream()));
517
518 sendStartStream();
519 Log.d(Config.LOGTAG, account.getJid() + ": compression enabled");
520 usingCompression = true;
521 processStream(tagReader.readTag());
522 }
523
524 private void sendStartTLS() throws IOException {
525 Tag startTLS = Tag.empty("starttls");
526 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
527 tagWriter.writeTag(startTLS);
528 }
529
530 private SharedPreferences getPreferences() {
531 return PreferenceManager.getDefaultSharedPreferences(applicationContext);
532 }
533
534 private boolean enableLegacySSL() {
535 return getPreferences().getBoolean("enable_legacy_ssl", false);
536 }
537
538 private void switchOverToTls(Tag currentTag) throws XmlPullParserException,
539 IOException {
540 tagReader.readTag();
541 try {
542 SSLContext sc = SSLContext.getInstance("TLS");
543 sc.init(null,
544 new X509TrustManager[] { this.mMemorizingTrustManager },
545 mRandom);
546 SSLSocketFactory factory = sc.getSocketFactory();
547
548 HostnameVerifier verifier = this.mMemorizingTrustManager
549 .wrapHostnameVerifier(new org.apache.http.conn.ssl.StrictHostnameVerifier());
550 SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,
551 socket.getInetAddress().getHostAddress(), socket.getPort(),
552 true);
553
554 // Support all protocols except legacy SSL.
555 // The min SDK version prevents us having to worry about SSLv2. In future, this may be
556 // true of SSLv3 as well.
557 final String[] supportProtocols;
558 if (enableLegacySSL()) {
559 supportProtocols = sslSocket.getSupportedProtocols();
560 } else {
561 final List<String> supportedProtocols = new LinkedList<String>(Arrays.asList(
562 sslSocket.getSupportedProtocols()));
563 supportedProtocols.remove("SSLv3");
564 supportProtocols = new String[supportedProtocols.size()];
565 supportedProtocols.toArray(supportProtocols);
566 }
567 sslSocket.setEnabledProtocols(supportProtocols);
568
569 if (verifier != null
570 && !verifier.verify(account.getServer(),
571 sslSocket.getSession())) {
572 Log.d(Config.LOGTAG, account.getJid()
573 + ": host mismatch in TLS connection");
574 sslSocket.close();
575 throw new IOException();
576 }
577 tagReader.setInputStream(sslSocket.getInputStream());
578 tagWriter.setOutputStream(sslSocket.getOutputStream());
579 sendStartStream();
580 Log.d(Config.LOGTAG, account.getJid()
581 + ": TLS connection established");
582 usingEncryption = true;
583 processStream(tagReader.readTag());
584 sslSocket.close();
585 } catch (NoSuchAlgorithmException e1) {
586 e1.printStackTrace();
587 } catch (KeyManagementException e) {
588 e.printStackTrace();
589 }
590 }
591
592 private void sendSaslAuthPlain() throws IOException {
593 String saslString = CryptoHelper.saslPlain(account.getUsername(),
594 account.getPassword());
595 Element auth = new Element("auth");
596 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
597 auth.setAttribute("mechanism", "PLAIN");
598 auth.setContent(saslString);
599 tagWriter.writeElement(auth);
600 }
601
602 private void sendSaslAuthDigestMd5() throws IOException {
603 Element auth = new Element("auth");
604 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
605 auth.setAttribute("mechanism", "DIGEST-MD5");
606 tagWriter.writeElement(auth);
607 }
608
609 private void processStreamFeatures(Tag currentTag)
610 throws XmlPullParserException, IOException {
611 this.streamFeatures = tagReader.readElement(currentTag);
612 if (this.streamFeatures.hasChild("starttls") && !usingEncryption) {
613 sendStartTLS();
614 } else if (compressionAvailable()) {
615 sendCompressionZlib();
616 } else if (this.streamFeatures.hasChild("register")
617 && account.isOptionSet(Account.OPTION_REGISTER) && usingEncryption) {
618 sendRegistryRequest();
619 } else if (!this.streamFeatures.hasChild("register")
620 && account.isOptionSet(Account.OPTION_REGISTER)) {
621 changeStatus(Account.STATUS_REGISTRATION_NOT_SUPPORTED);
622 disconnect(true);
623 } else if (this.streamFeatures.hasChild("mechanisms")
624 && shouldAuthenticate && usingEncryption) {
625 List<String> mechanisms = extractMechanisms(streamFeatures
626 .findChild("mechanisms"));
627 if (mechanisms.contains("PLAIN")) {
628 sendSaslAuthPlain();
629 } else if (mechanisms.contains("DIGEST-MD5")) {
630 sendSaslAuthDigestMd5();
631 }
632 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:"
633 + smVersion)
634 && streamId != null) {
635 ResumePacket resume = new ResumePacket(this.streamId,
636 stanzasReceived, smVersion);
637 this.tagWriter.writeStanzaAsync(resume);
638 } else if (this.streamFeatures.hasChild("bind") && shouldBind) {
639 sendBindRequest();
640 } else {
641 Log.d(Config.LOGTAG,account.getJid()+": incompatible server. disconnecting");
642 disconnect(true);
643 }
644 }
645
646 private boolean compressionAvailable() {
647 if (!this.streamFeatures.hasChild("compression",
648 "http://jabber.org/features/compress"))
649 return false;
650 if (!ZLibOutputStream.SUPPORTED)
651 return false;
652 if (!account.isOptionSet(Account.OPTION_USECOMPRESSION))
653 return false;
654
655 Element compression = this.streamFeatures.findChild("compression",
656 "http://jabber.org/features/compress");
657 for (Element child : compression.getChildren()) {
658 if (!"method".equals(child.getName()))
659 continue;
660
661 if ("zlib".equalsIgnoreCase(child.getContent())) {
662 return true;
663 }
664 }
665 return false;
666 }
667
668 private List<String> extractMechanisms(Element stream) {
669 ArrayList<String> mechanisms = new ArrayList<String>(stream
670 .getChildren().size());
671 for (Element child : stream.getChildren()) {
672 mechanisms.add(child.getContent());
673 }
674 return mechanisms;
675 }
676
677 private void sendRegistryRequest() {
678 IqPacket register = new IqPacket(IqPacket.TYPE_GET);
679 register.query("jabber:iq:register");
680 register.setTo(account.getServer());
681 sendIqPacket(register, new OnIqPacketReceived() {
682
683 @Override
684 public void onIqPacketReceived(Account account, IqPacket packet) {
685 Element instructions = packet.query().findChild("instructions");
686 if (packet.query().hasChild("username")
687 && (packet.query().hasChild("password"))) {
688 IqPacket register = new IqPacket(IqPacket.TYPE_SET);
689 Element username = new Element("username")
690 .setContent(account.getUsername());
691 Element password = new Element("password")
692 .setContent(account.getPassword());
693 register.query("jabber:iq:register").addChild(username);
694 register.query().addChild(password);
695 sendIqPacket(register, new OnIqPacketReceived() {
696
697 @Override
698 public void onIqPacketReceived(Account account,
699 IqPacket packet) {
700 if (packet.getType() == IqPacket.TYPE_RESULT) {
701 account.setOption(Account.OPTION_REGISTER,
702 false);
703 changeStatus(Account.STATUS_REGISTRATION_SUCCESSFULL);
704 } else if (packet.hasChild("error")
705 && (packet.findChild("error")
706 .hasChild("conflict"))) {
707 changeStatus(Account.STATUS_REGISTRATION_CONFLICT);
708 } else {
709 changeStatus(Account.STATUS_REGISTRATION_FAILED);
710 Log.d(Config.LOGTAG, packet.toString());
711 }
712 disconnect(true);
713 }
714 });
715 } else {
716 changeStatus(Account.STATUS_REGISTRATION_FAILED);
717 disconnect(true);
718 Log.d(Config.LOGTAG, account.getJid()
719 + ": could not register. instructions are"
720 + instructions.getContent());
721 }
722 }
723 });
724 }
725
726 private void sendBindRequest() throws IOException {
727 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
728 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
729 .addChild("resource").setContent(account.getResource());
730 this.sendUnboundIqPacket(iq, new OnIqPacketReceived() {
731 @Override
732 public void onIqPacketReceived(Account account, IqPacket packet) {
733 Element bind = packet.findChild("bind");
734 if (bind != null) {
735 Element jid = bind.findChild("jid");
736 if (jid != null && jid.getContent() != null) {
737 account.setResource(jid.getContent().split("/", 2)[1]);
738 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
739 smVersion = 3;
740 EnablePacket enable = new EnablePacket(smVersion);
741 tagWriter.writeStanzaAsync(enable);
742 stanzasSent = 0;
743 messageReceipts.clear();
744 } else if (streamFeatures.hasChild("sm",
745 "urn:xmpp:sm:2")) {
746 smVersion = 2;
747 EnablePacket enable = new EnablePacket(smVersion);
748 tagWriter.writeStanzaAsync(enable);
749 stanzasSent = 0;
750 messageReceipts.clear();
751 }
752 sendServiceDiscoveryInfo(account.getServer());
753 sendServiceDiscoveryItems(account.getServer());
754 if (bindListener != null) {
755 bindListener.onBind(account);
756 }
757 sendInitialPing();
758 } else {
759 disconnect(true);
760 }
761 } else {
762 disconnect(true);
763 }
764 }
765 });
766 if (this.streamFeatures.hasChild("session")) {
767 Log.d(Config.LOGTAG, account.getJid()
768 + ": sending deprecated session");
769 IqPacket startSession = new IqPacket(IqPacket.TYPE_SET);
770 startSession.addChild("session",
771 "urn:ietf:params:xml:ns:xmpp-session");
772 this.sendUnboundIqPacket(startSession, null);
773 }
774 }
775
776 private void sendServiceDiscoveryInfo(final String server) {
777 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
778 iq.setTo(server);
779 iq.query("http://jabber.org/protocol/disco#info");
780 this.sendIqPacket(iq, new OnIqPacketReceived() {
781
782 @Override
783 public void onIqPacketReceived(Account account, IqPacket packet) {
784 List<Element> elements = packet.query().getChildren();
785 List<String> features = new ArrayList<String>();
786 for (int i = 0; i < elements.size(); ++i) {
787 if (elements.get(i).getName().equals("feature")) {
788 features.add(elements.get(i).getAttribute("var"));
789 }
790 }
791 disco.put(server, features);
792
793 if (account.getServer().equals(server)) {
794 enableAdvancedStreamFeatures();
795 }
796 }
797 });
798 }
799
800 private void enableAdvancedStreamFeatures() {
801 if (getFeatures().carbons()) {
802 sendEnableCarbons();
803 }
804 }
805
806 private void sendServiceDiscoveryItems(final String server) {
807 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
808 iq.setTo(server);
809 iq.query("http://jabber.org/protocol/disco#items");
810 this.sendIqPacket(iq, new OnIqPacketReceived() {
811
812 @Override
813 public void onIqPacketReceived(Account account, IqPacket packet) {
814 List<Element> elements = packet.query().getChildren();
815 for (int i = 0; i < elements.size(); ++i) {
816 if (elements.get(i).getName().equals("item")) {
817 String jid = elements.get(i).getAttribute("jid");
818 sendServiceDiscoveryInfo(jid);
819 }
820 }
821 }
822 });
823 }
824
825 private void sendEnableCarbons() {
826 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
827 iq.addChild("enable", "urn:xmpp:carbons:2");
828 this.sendIqPacket(iq, new OnIqPacketReceived() {
829
830 @Override
831 public void onIqPacketReceived(Account account, IqPacket packet) {
832 if (!packet.hasChild("error")) {
833 Log.d(Config.LOGTAG, account.getJid()
834 + ": successfully enabled carbons");
835 } else {
836 Log.d(Config.LOGTAG, account.getJid()
837 + ": error enableing carbons " + packet.toString());
838 }
839 }
840 });
841 }
842
843 private void processStreamError(Tag currentTag)
844 throws XmlPullParserException, IOException {
845 Element streamError = tagReader.readElement(currentTag);
846 if (streamError != null && streamError.hasChild("conflict")) {
847 String resource = account.getResource().split("\\.")[0];
848 account.setResource(resource + "." + nextRandomId());
849 Log.d(Config.LOGTAG,
850 account.getJid() + ": switching resource due to conflict ("
851 + account.getResource() + ")");
852 }
853 }
854
855 private void sendStartStream() throws IOException {
856 Tag stream = Tag.start("stream:stream");
857 stream.setAttribute("from", account.getJid());
858 stream.setAttribute("to", account.getServer());
859 stream.setAttribute("version", "1.0");
860 stream.setAttribute("xml:lang", "en");
861 stream.setAttribute("xmlns", "jabber:client");
862 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
863 tagWriter.writeTag(stream);
864 }
865
866 private String nextRandomId() {
867 return new BigInteger(50, mRandom).toString(32);
868 }
869
870 public void sendIqPacket(IqPacket packet, OnIqPacketReceived callback) {
871 if (packet.getId() == null) {
872 String id = nextRandomId();
873 packet.setAttribute("id", id);
874 }
875 packet.setFrom(account.getFullJid());
876 this.sendPacket(packet, callback);
877 }
878
879 public void sendUnboundIqPacket(IqPacket packet, OnIqPacketReceived callback) {
880 if (packet.getId() == null) {
881 String id = nextRandomId();
882 packet.setAttribute("id", id);
883 }
884 this.sendPacket(packet, callback);
885 }
886
887 public void sendMessagePacket(MessagePacket packet) {
888 this.sendPacket(packet, null);
889 }
890
891 public void sendPresencePacket(PresencePacket packet) {
892 this.sendPacket(packet, null);
893 }
894
895 private synchronized void sendPacket(final AbstractStanza packet,
896 PacketReceived callback) {
897 if (packet.getName().equals("iq") || packet.getName().equals("message")
898 || packet.getName().equals("presence")) {
899 ++stanzasSent;
900 }
901 tagWriter.writeStanzaAsync(packet);
902 if (packet instanceof MessagePacket && packet.getId() != null
903 && this.streamId != null) {
904 Log.d(Config.LOGTAG, "request delivery report for stanza "
905 + stanzasSent);
906 this.messageReceipts.put(stanzasSent, packet.getId());
907 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
908 }
909 if (callback != null) {
910 if (packet.getId() == null) {
911 packet.setId(nextRandomId());
912 }
913 packetCallbacks.put(packet.getId(), callback);
914 }
915 }
916
917 public void sendPing() {
918 if (streamFeatures.hasChild("sm")) {
919 tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
920 } else {
921 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
922 iq.setFrom(account.getFullJid());
923 iq.addChild("ping", "urn:xmpp:ping");
924 this.sendIqPacket(iq, null);
925 }
926 this.lastPingSent = SystemClock.elapsedRealtime();
927 }
928
929 public void setOnMessagePacketReceivedListener(
930 OnMessagePacketReceived listener) {
931 this.messageListener = listener;
932 }
933
934 public void setOnUnregisteredIqPacketReceivedListener(
935 OnIqPacketReceived listener) {
936 this.unregisteredIqListener = listener;
937 }
938
939 public void setOnPresencePacketReceivedListener(
940 OnPresencePacketReceived listener) {
941 this.presenceListener = listener;
942 }
943
944 public void setOnJinglePacketReceivedListener(
945 OnJinglePacketReceived listener) {
946 this.jingleListener = listener;
947 }
948
949 public void setOnStatusChangedListener(OnStatusChanged listener) {
950 this.statusListener = listener;
951 }
952
953 public void setOnBindListener(OnBindListener listener) {
954 this.bindListener = listener;
955 }
956
957 public void setOnMessageAcknowledgeListener(OnMessageAcknowledged listener) {
958 this.acknowledgedListener = listener;
959 }
960
961 public void disconnect(boolean force) {
962 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting");
963 try {
964 if (force) {
965 socket.close();
966 return;
967 }
968 new Thread(new Runnable() {
969
970 @Override
971 public void run() {
972 if (tagWriter.isActive()) {
973 tagWriter.finish();
974 try {
975 while (!tagWriter.finished()) {
976 Log.d(Config.LOGTAG, "not yet finished");
977 Thread.sleep(100);
978 }
979 tagWriter.writeTag(Tag.end("stream:stream"));
980 socket.close();
981 } catch (IOException e) {
982 Log.d(Config.LOGTAG,
983 "io exception during disconnect");
984 } catch (InterruptedException e) {
985 Log.d(Config.LOGTAG, "interrupted");
986 }
987 }
988 }
989 }).start();
990 } catch (IOException e) {
991 Log.d(Config.LOGTAG, "io exception during disconnect");
992 }
993 }
994
995 public List<String> findDiscoItemsByFeature(String feature) {
996 List<String> items = new ArrayList<String>();
997 for (Entry<String, List<String>> cursor : disco.entrySet()) {
998 if (cursor.getValue().contains(feature)) {
999 items.add(cursor.getKey());
1000 }
1001 }
1002 return items;
1003 }
1004
1005 public String findDiscoItemByFeature(String feature) {
1006 List<String> items = findDiscoItemsByFeature(feature);
1007 if (items.size() >= 1) {
1008 return items.get(0);
1009 }
1010 return null;
1011 }
1012
1013 public void r() {
1014 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1015 }
1016
1017 public String getMucServer() {
1018 return findDiscoItemByFeature("http://jabber.org/protocol/muc");
1019 }
1020
1021 public int getTimeToNextAttempt() {
1022 int interval = (int) (25 * Math.pow(1.5, attempt));
1023 int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1024 return interval - secondsSinceLast;
1025 }
1026
1027 public int getAttempt() {
1028 return this.attempt;
1029 }
1030
1031 public Features getFeatures() {
1032 return this.features;
1033 }
1034
1035 public class Features {
1036 XmppConnection connection;
1037
1038 public Features(XmppConnection connection) {
1039 this.connection = connection;
1040 }
1041
1042 private boolean hasDiscoFeature(String server, String feature) {
1043 if (!connection.disco.containsKey(server)) {
1044 return false;
1045 }
1046 return connection.disco.get(server).contains(feature);
1047 }
1048
1049 public boolean carbons() {
1050 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
1051 }
1052
1053 public boolean sm() {
1054 return streamId != null;
1055 }
1056
1057 public boolean csi() {
1058 if (connection.streamFeatures == null) {
1059 return false;
1060 } else {
1061 return connection.streamFeatures.hasChild("csi",
1062 "urn:xmpp:csi:0");
1063 }
1064 }
1065
1066 public boolean pubsub() {
1067 return hasDiscoFeature(account.getServer(),
1068 "http://jabber.org/protocol/pubsub#publish");
1069 }
1070
1071 public boolean rosterVersioning() {
1072 if (connection.streamFeatures == null) {
1073 return false;
1074 } else {
1075 return connection.streamFeatures.hasChild("ver");
1076 }
1077 }
1078
1079 public boolean streamhost() {
1080 return connection
1081 .findDiscoItemByFeature("http://jabber.org/protocol/bytestreams") != null;
1082 }
1083
1084 public boolean compression() {
1085 return connection.usingCompression;
1086 }
1087 }
1088
1089 public long getLastSessionEstablished() {
1090 long diff;
1091 if (this.lastSessionStarted == 0) {
1092 diff = SystemClock.elapsedRealtime() - this.lastConnect;
1093 } else {
1094 diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1095 }
1096 return System.currentTimeMillis() - diff;
1097 }
1098
1099 public long getLastConnect() {
1100 return this.lastConnect;
1101 }
1102
1103 public long getLastPingSent() {
1104 return this.lastPingSent;
1105 }
1106
1107 public long getLastPacketReceived() {
1108 return this.lastPaketReceived;
1109 }
1110
1111 public void sendActive() {
1112 this.sendPacket(new ActivePacket(), null);
1113 }
1114
1115 public void sendInactive() {
1116 this.sendPacket(new InactivePacket(), null);
1117 }
1118}