1package eu.siacs.conversations.xmpp;
2
3import android.content.Context;
4import android.content.SharedPreferences;
5import android.os.Bundle;
6import android.os.Parcelable;
7import android.os.PowerManager;
8import android.os.PowerManager.WakeLock;
9import android.os.SystemClock;
10import android.preference.PreferenceManager;
11import android.util.Log;
12import android.util.SparseArray;
13
14import org.apache.http.conn.ssl.StrictHostnameVerifier;
15import org.xmlpull.v1.XmlPullParserException;
16
17import java.io.IOException;
18import java.io.InputStream;
19import java.io.OutputStream;
20import java.math.BigInteger;
21import java.net.InetSocketAddress;
22import java.net.Socket;
23import java.net.UnknownHostException;
24import java.security.KeyManagementException;
25import java.security.NoSuchAlgorithmException;
26import java.util.ArrayList;
27import java.util.Arrays;
28import java.util.HashMap;
29import java.util.Hashtable;
30import java.util.LinkedList;
31import java.util.List;
32import java.util.Map.Entry;
33
34import javax.net.ssl.HostnameVerifier;
35import javax.net.ssl.SSLContext;
36import javax.net.ssl.SSLSocket;
37import javax.net.ssl.SSLSocketFactory;
38import javax.net.ssl.X509TrustManager;
39
40import eu.siacs.conversations.Config;
41import eu.siacs.conversations.entities.Account;
42import eu.siacs.conversations.services.XmppConnectionService;
43import eu.siacs.conversations.utils.CryptoHelper;
44import eu.siacs.conversations.utils.DNSHelper;
45import eu.siacs.conversations.utils.zlib.ZLibInputStream;
46import eu.siacs.conversations.utils.zlib.ZLibOutputStream;
47import eu.siacs.conversations.xml.Element;
48import eu.siacs.conversations.xml.Tag;
49import eu.siacs.conversations.xml.TagWriter;
50import eu.siacs.conversations.xml.XmlReader;
51import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
52import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
53import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
54import eu.siacs.conversations.xmpp.stanzas.IqPacket;
55import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
56import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
57import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
58import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
59import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
60import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
61import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
62import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
63
64public class XmppConnection implements Runnable {
65
66 private static final int PACKET_IQ = 0;
67 private static final int PACKET_MESSAGE = 1;
68 private static final int PACKET_PRESENCE = 2;
69 private final Context applicationContext;
70 protected Account account;
71 private WakeLock wakeLock;
72 private Socket socket;
73 private XmlReader tagReader;
74 private TagWriter tagWriter;
75 private Features features = new Features(this);
76 private boolean shouldBind = true;
77 private boolean shouldAuthenticate = true;
78 private Element streamFeatures;
79 private HashMap<String, List<String>> disco = new HashMap<String, List<String>>();
80 private String streamId = null;
81 private int smVersion = 3;
82 private SparseArray<String> messageReceipts = new SparseArray<String>();
83 private boolean usingCompression = false;
84 private boolean usingEncryption = false;
85 private int stanzasReceived = 0;
86 private int stanzasSent = 0;
87 private long lastPaketReceived = 0;
88 private long lastPingSent = 0;
89 private long lastConnect = 0;
90 private long lastSessionStarted = 0;
91 private int attempt = 0;
92 private Hashtable<String, PacketReceived> packetCallbacks = new Hashtable<String, PacketReceived>();
93 private OnPresencePacketReceived presenceListener = null;
94 private OnJinglePacketReceived jingleListener = null;
95 private OnIqPacketReceived unregisteredIqListener = null;
96 private OnMessagePacketReceived messageListener = null;
97 private OnStatusChanged statusListener = null;
98 private OnBindListener bindListener = null;
99 private OnMessageAcknowledged acknowledgedListener = null;
100 private XmppConnectionService mXmppConnectionService = null;
101
102 public XmppConnection(Account account, XmppConnectionService service) {
103 this.account = account;
104 this.wakeLock = service.getPowerManager().newWakeLock(
105 PowerManager.PARTIAL_WAKE_LOCK, account.getJid());
106 tagWriter = new TagWriter();
107 mXmppConnectionService = service;
108 applicationContext = service.getApplicationContext();
109 }
110
111 protected void changeStatus(int nextStatus) {
112 if (account.getStatus() != nextStatus) {
113 if ((nextStatus == Account.STATUS_OFFLINE)
114 && (account.getStatus() != Account.STATUS_CONNECTING)
115 && (account.getStatus() != Account.STATUS_ONLINE)
116 && (account.getStatus() != Account.STATUS_DISABLED)) {
117 return;
118 }
119 if (nextStatus == Account.STATUS_ONLINE) {
120 this.attempt = 0;
121 }
122 account.setStatus(nextStatus);
123 if (statusListener != null) {
124 statusListener.onStatusChanged(account);
125 }
126 }
127 }
128
129 protected void connect() {
130 Log.d(Config.LOGTAG, account.getJid() + ": connecting");
131 usingCompression = false;
132 usingEncryption = false;
133 lastConnect = SystemClock.elapsedRealtime();
134 lastPingSent = SystemClock.elapsedRealtime();
135 this.attempt++;
136 try {
137 shouldAuthenticate = shouldBind = !account
138 .isOptionSet(Account.OPTION_REGISTER);
139 tagReader = new XmlReader(wakeLock);
140 tagWriter = new TagWriter();
141 packetCallbacks.clear();
142 this.changeStatus(Account.STATUS_CONNECTING);
143 Bundle result = DNSHelper.getSRVRecord(account.getServer());
144 ArrayList<Parcelable> values = result.getParcelableArrayList("values");
145 if ("timeout".equals(result.getString("error"))) {
146 Log.d(Config.LOGTAG, account.getJid() + ": dns timeout");
147 this.changeStatus(Account.STATUS_OFFLINE);
148 return;
149 } else if (values != null) {
150 int i = 0;
151 boolean socketError = true;
152 while (socketError && values.size() > i) {
153 Bundle namePort = (Bundle) values.get(i);
154 try {
155 String srvRecordServer = namePort.getString("name");
156 int srvRecordPort = namePort.getInt("port");
157 String srvIpServer = namePort.getString("ipv4");
158 InetSocketAddress addr;
159 if (srvIpServer != null) {
160 addr = new InetSocketAddress(srvIpServer, srvRecordPort);
161 Log.d(Config.LOGTAG, account.getJid()
162 + ": using values from dns " + srvRecordServer
163 + "[" + srvIpServer + "]:" + srvRecordPort);
164 } else {
165 addr = new InetSocketAddress(srvRecordServer, srvRecordPort);
166 Log.d(Config.LOGTAG, account.getJid()
167 + ": using values from dns "
168 + srvRecordServer + ":" + srvRecordPort);
169 }
170 socket = new Socket();
171 socket.connect(addr, 20000);
172 socketError = false;
173 } catch (UnknownHostException e) {
174 Log.d(Config.LOGTAG, account.getJid() + ": " + e.getMessage());
175 i++;
176 } catch (IOException e) {
177 Log.d(Config.LOGTAG, account.getJid() + ": " + e.getMessage());
178 i++;
179 }
180 }
181 if (socketError) {
182 this.changeStatus(Account.STATUS_SERVER_NOT_FOUND);
183 if (wakeLock.isHeld()) {
184 try {
185 wakeLock.release();
186 } catch (RuntimeException re) {
187 }
188 }
189 return;
190 }
191 } else if (result.containsKey("error")
192 && "nosrv".equals(result.getString("error", null))) {
193 socket = new Socket(account.getServer(), 5222);
194 } else {
195 Log.d(Config.LOGTAG, account.getJid()
196 + ": timeout in DNS resolution");
197 changeStatus(Account.STATUS_OFFLINE);
198 return;
199 }
200 OutputStream out = socket.getOutputStream();
201 tagWriter.setOutputStream(out);
202 InputStream in = socket.getInputStream();
203 tagReader.setInputStream(in);
204 tagWriter.beginDocument();
205 sendStartStream();
206 Tag nextTag;
207 while ((nextTag = tagReader.readTag()) != null) {
208 if (nextTag.isStart("stream")) {
209 processStream(nextTag);
210 break;
211 } else {
212 Log.d(Config.LOGTAG,
213 "found unexpected tag: " + nextTag.getName());
214 return;
215 }
216 }
217 if (socket.isConnected()) {
218 socket.close();
219 }
220 } catch (UnknownHostException e) {
221 this.changeStatus(Account.STATUS_SERVER_NOT_FOUND);
222 if (wakeLock.isHeld()) {
223 try {
224 wakeLock.release();
225 } catch (RuntimeException re) {
226 }
227 }
228 return;
229 } catch (IOException e) {
230 Log.d(Config.LOGTAG, account.getJid() + ": " + e.getMessage());
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 Log.d(Config.LOGTAG, account.getJid() + ": " + e.getMessage());
241 this.changeStatus(Account.STATUS_OFFLINE);
242 Log.d(Config.LOGTAG, "compression exception " + e.getMessage());
243 if (wakeLock.isHeld()) {
244 try {
245 wakeLock.release();
246 } catch (RuntimeException re) {
247 }
248 }
249 return;
250 } catch (XmlPullParserException e) {
251 Log.d(Config.LOGTAG, account.getJid() + ": " + e.getMessage());
252 this.changeStatus(Account.STATUS_OFFLINE);
253 if (wakeLock.isHeld()) {
254 try {
255 wakeLock.release();
256 } catch (RuntimeException re) {
257 }
258 }
259 return;
260 }
261
262 }
263
264 @Override
265 public void run() {
266 connect();
267 }
268
269 private void processStream(Tag currentTag) throws XmlPullParserException,
270 IOException, NoSuchAlgorithmException {
271 Tag nextTag = tagReader.readTag();
272 while ((nextTag != null) && (!nextTag.isEnd("stream"))) {
273 if (nextTag.isStart("error")) {
274 processStreamError(nextTag);
275 } else if (nextTag.isStart("features")) {
276 processStreamFeatures(nextTag);
277 } else if (nextTag.isStart("proceed")) {
278 switchOverToTls(nextTag);
279 } else if (nextTag.isStart("compressed")) {
280 switchOverToZLib(nextTag);
281 } else if (nextTag.isStart("success")) {
282 Log.d(Config.LOGTAG, account.getJid() + ": logged in");
283 tagReader.readTag();
284 tagReader.reset();
285 sendStartStream();
286 processStream(tagReader.readTag());
287 break;
288 } else if (nextTag.isStart("failure")) {
289 tagReader.readElement(nextTag);
290 changeStatus(Account.STATUS_UNAUTHORIZED);
291 } else if (nextTag.isStart("challenge")) {
292 String challange = tagReader.readElement(nextTag).getContent();
293 Element response = new Element("response");
294 response.setAttribute("xmlns",
295 "urn:ietf:params:xml:ns:xmpp-sasl");
296 response.setContent(CryptoHelper.saslDigestMd5(account,
297 challange, mXmppConnectionService.getRNG()));
298 tagWriter.writeElement(response);
299 } else if (nextTag.isStart("enabled")) {
300 Element enabled = tagReader.readElement(nextTag);
301 if ("true".equals(enabled.getAttribute("resume"))) {
302 this.streamId = enabled.getAttribute("id");
303 Log.d(Config.LOGTAG, account.getJid()
304 + ": stream managment(" + smVersion
305 + ") enabled (resumable)");
306 } else {
307 Log.d(Config.LOGTAG, account.getJid()
308 + ": stream managment(" + smVersion + ") enabled");
309 }
310 this.lastSessionStarted = SystemClock.elapsedRealtime();
311 this.stanzasReceived = 0;
312 RequestPacket r = new RequestPacket(smVersion);
313 tagWriter.writeStanzaAsync(r);
314 } else if (nextTag.isStart("resumed")) {
315 lastPaketReceived = SystemClock.elapsedRealtime();
316 Element resumed = tagReader.readElement(nextTag);
317 String h = resumed.getAttribute("h");
318 try {
319 int serverCount = Integer.parseInt(h);
320 if (serverCount != stanzasSent) {
321 Log.d(Config.LOGTAG, account.getJid()
322 + ": session resumed with lost packages");
323 stanzasSent = serverCount;
324 } else {
325 Log.d(Config.LOGTAG, account.getJid()
326 + ": session resumed");
327 }
328 if (acknowledgedListener != null) {
329 for (int i = 0; i < messageReceipts.size(); ++i) {
330 if (serverCount >= messageReceipts.keyAt(i)) {
331 acknowledgedListener.onMessageAcknowledged(
332 account, messageReceipts.valueAt(i));
333 }
334 }
335 }
336 messageReceipts.clear();
337 } catch (NumberFormatException e) {
338
339 }
340 sendInitialPing();
341
342 } else if (nextTag.isStart("r")) {
343 tagReader.readElement(nextTag);
344 AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
345 tagWriter.writeStanzaAsync(ack);
346 } else if (nextTag.isStart("a")) {
347 Element ack = tagReader.readElement(nextTag);
348 lastPaketReceived = SystemClock.elapsedRealtime();
349 int serverSequence = Integer.parseInt(ack.getAttribute("h"));
350 String msgId = this.messageReceipts.get(serverSequence);
351 if (msgId != null) {
352 if (this.acknowledgedListener != null) {
353 this.acknowledgedListener.onMessageAcknowledged(
354 account, msgId);
355 }
356 this.messageReceipts.remove(serverSequence);
357 }
358 } else if (nextTag.isStart("failed")) {
359 tagReader.readElement(nextTag);
360 Log.d(Config.LOGTAG, account.getJid() + ": resumption failed");
361 streamId = null;
362 if (account.getStatus() != Account.STATUS_ONLINE) {
363 sendBindRequest();
364 }
365 } else if (nextTag.isStart("iq")) {
366 processIq(nextTag);
367 } else if (nextTag.isStart("message")) {
368 processMessage(nextTag);
369 } else if (nextTag.isStart("presence")) {
370 processPresence(nextTag);
371 }
372 nextTag = tagReader.readTag();
373 }
374 if (account.getStatus() == Account.STATUS_ONLINE) {
375 account.setStatus(Account.STATUS_OFFLINE);
376 if (statusListener != null) {
377 statusListener.onStatusChanged(account);
378 }
379 }
380 }
381
382 private void sendInitialPing() {
383 Log.d(Config.LOGTAG, account.getJid() + ": sending intial ping");
384 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
385 iq.setFrom(account.getFullJid());
386 iq.addChild("ping", "urn:xmpp:ping");
387 this.sendIqPacket(iq, new OnIqPacketReceived() {
388
389 @Override
390 public void onIqPacketReceived(Account account, IqPacket packet) {
391 Log.d(Config.LOGTAG, account.getJid()
392 + ": online with resource " + account.getResource());
393 changeStatus(Account.STATUS_ONLINE);
394 }
395 });
396 }
397
398 private Element processPacket(Tag currentTag, int packetType)
399 throws XmlPullParserException, IOException {
400 Element element;
401 switch (packetType) {
402 case PACKET_IQ:
403 element = new IqPacket();
404 break;
405 case PACKET_MESSAGE:
406 element = new MessagePacket();
407 break;
408 case PACKET_PRESENCE:
409 element = new PresencePacket();
410 break;
411 default:
412 return null;
413 }
414 element.setAttributes(currentTag.getAttributes());
415 Tag nextTag = tagReader.readTag();
416 if (nextTag == null) {
417 throw new IOException("interrupted mid tag");
418 }
419 while (!nextTag.isEnd(element.getName())) {
420 if (!nextTag.isNo()) {
421 Element child = tagReader.readElement(nextTag);
422 String type = currentTag.getAttribute("type");
423 if (packetType == PACKET_IQ
424 && "jingle".equals(child.getName())
425 && ("set".equalsIgnoreCase(type) || "get"
426 .equalsIgnoreCase(type))) {
427 element = new JinglePacket();
428 element.setAttributes(currentTag.getAttributes());
429 }
430 element.addChild(child);
431 }
432 nextTag = tagReader.readTag();
433 if (nextTag == null) {
434 throw new IOException("interrupted mid tag");
435 }
436 }
437 ++stanzasReceived;
438 lastPaketReceived = SystemClock.elapsedRealtime();
439 return element;
440 }
441
442 private void processIq(Tag currentTag) throws XmlPullParserException,
443 IOException {
444 IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
445
446 if (packet.getId() == null) {
447 return; // an iq packet without id is definitely invalid
448 }
449
450 if (packet instanceof JinglePacket) {
451 if (this.jingleListener != null) {
452 this.jingleListener.onJinglePacketReceived(account,
453 (JinglePacket) packet);
454 }
455 } else {
456 if (packetCallbacks.containsKey(packet.getId())) {
457 if (packetCallbacks.get(packet.getId()) instanceof OnIqPacketReceived) {
458 ((OnIqPacketReceived) packetCallbacks.get(packet.getId()))
459 .onIqPacketReceived(account, packet);
460 }
461
462 packetCallbacks.remove(packet.getId());
463 } else if ((packet.getType() == IqPacket.TYPE_GET || packet
464 .getType() == IqPacket.TYPE_SET)
465 && this.unregisteredIqListener != null) {
466 this.unregisteredIqListener.onIqPacketReceived(account, packet);
467 }
468 }
469 }
470
471 private void processMessage(Tag currentTag) throws XmlPullParserException,
472 IOException {
473 MessagePacket packet = (MessagePacket) processPacket(currentTag,
474 PACKET_MESSAGE);
475 String id = packet.getAttribute("id");
476 if ((id != null) && (packetCallbacks.containsKey(id))) {
477 if (packetCallbacks.get(id) instanceof OnMessagePacketReceived) {
478 ((OnMessagePacketReceived) packetCallbacks.get(id))
479 .onMessagePacketReceived(account, packet);
480 }
481 packetCallbacks.remove(id);
482 } else if (this.messageListener != null) {
483 this.messageListener.onMessagePacketReceived(account, packet);
484 }
485 }
486
487 private void processPresence(Tag currentTag) throws XmlPullParserException,
488 IOException {
489 PresencePacket packet = (PresencePacket) processPacket(currentTag,
490 PACKET_PRESENCE);
491 String id = packet.getAttribute("id");
492 if ((id != null) && (packetCallbacks.containsKey(id))) {
493 if (packetCallbacks.get(id) instanceof OnPresencePacketReceived) {
494 ((OnPresencePacketReceived) packetCallbacks.get(id))
495 .onPresencePacketReceived(account, packet);
496 }
497 packetCallbacks.remove(id);
498 } else if (this.presenceListener != null) {
499 this.presenceListener.onPresencePacketReceived(account, packet);
500 }
501 }
502
503 private void sendCompressionZlib() throws IOException {
504 Element compress = new Element("compress");
505 compress.setAttribute("xmlns", "http://jabber.org/protocol/compress");
506 compress.addChild("method").setContent("zlib");
507 tagWriter.writeElement(compress);
508 }
509
510 private void switchOverToZLib(Tag currentTag)
511 throws XmlPullParserException, IOException,
512 NoSuchAlgorithmException {
513 tagReader.readTag(); // read tag close
514 tagWriter.setOutputStream(new ZLibOutputStream(tagWriter
515 .getOutputStream()));
516 tagReader
517 .setInputStream(new ZLibInputStream(tagReader.getInputStream()));
518
519 sendStartStream();
520 Log.d(Config.LOGTAG, account.getJid() + ": compression enabled");
521 usingCompression = true;
522 processStream(tagReader.readTag());
523 }
524
525 private void sendStartTLS() throws IOException {
526 Tag startTLS = Tag.empty("starttls");
527 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
528 tagWriter.writeTag(startTLS);
529 }
530
531 private SharedPreferences getPreferences() {
532 return PreferenceManager
533 .getDefaultSharedPreferences(applicationContext);
534 }
535
536 private boolean enableLegacySSL() {
537 return getPreferences().getBoolean("enable_legacy_ssl", false);
538 }
539
540 private void switchOverToTls(Tag currentTag) throws XmlPullParserException,
541 IOException {
542 tagReader.readTag();
543 try {
544 SSLContext sc = SSLContext.getInstance("TLS");
545 sc.init(null,
546 new X509TrustManager[]{this.mXmppConnectionService.getMemorizingTrustManager()},
547 mXmppConnectionService.getRNG());
548 SSLSocketFactory factory = sc.getSocketFactory();
549
550 if (factory == null) {
551 throw new IOException("SSLSocketFactory was null");
552 }
553
554 HostnameVerifier verifier = this.mXmppConnectionService.getMemorizingTrustManager().wrapHostnameVerifier(new StrictHostnameVerifier());
555
556 if (socket == null) {
557 throw new IOException("socket was null");
558 }
559 SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,
560 socket.getInetAddress().getHostAddress(), socket.getPort(),
561 true);
562
563 // Support all protocols except legacy SSL.
564 // The min SDK version prevents us having to worry about SSLv2. In
565 // future, this may be
566 // true of SSLv3 as well.
567 final String[] supportProtocols;
568 if (enableLegacySSL()) {
569 supportProtocols = sslSocket.getSupportedProtocols();
570 } else {
571 final List<String> supportedProtocols = new LinkedList<String>(
572 Arrays.asList(sslSocket.getSupportedProtocols()));
573 supportedProtocols.remove("SSLv3");
574 supportProtocols = new String[supportedProtocols.size()];
575 supportedProtocols.toArray(supportProtocols);
576 }
577 sslSocket.setEnabledProtocols(supportProtocols);
578
579 if (verifier != null
580 && !verifier.verify(account.getServer(),
581 sslSocket.getSession())) {
582 sslSocket.close();
583 throw new IOException("host mismatch in TLS connection");
584 }
585 tagReader.setInputStream(sslSocket.getInputStream());
586 tagWriter.setOutputStream(sslSocket.getOutputStream());
587 sendStartStream();
588 Log.d(Config.LOGTAG, account.getJid()
589 + ": TLS connection established");
590 usingEncryption = true;
591 processStream(tagReader.readTag());
592 sslSocket.close();
593 } catch (NoSuchAlgorithmException e1) {
594 e1.printStackTrace();
595 } catch (KeyManagementException e) {
596 e.printStackTrace();
597 }
598 }
599
600 private void sendSaslAuthPlain() throws IOException {
601 String saslString = CryptoHelper.saslPlain(account.getUsername(),
602 account.getPassword());
603 Element auth = new Element("auth");
604 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
605 auth.setAttribute("mechanism", "PLAIN");
606 auth.setContent(saslString);
607 tagWriter.writeElement(auth);
608 }
609
610 private void sendSaslAuthDigestMd5() throws IOException {
611 Element auth = new Element("auth");
612 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
613 auth.setAttribute("mechanism", "DIGEST-MD5");
614 tagWriter.writeElement(auth);
615 }
616
617 private void processStreamFeatures(Tag currentTag)
618 throws XmlPullParserException, IOException {
619 this.streamFeatures = tagReader.readElement(currentTag);
620 if (this.streamFeatures.hasChild("starttls") && !usingEncryption) {
621 sendStartTLS();
622 } else if (compressionAvailable()) {
623 sendCompressionZlib();
624 } else if (this.streamFeatures.hasChild("register")
625 && account.isOptionSet(Account.OPTION_REGISTER)
626 && usingEncryption) {
627 sendRegistryRequest();
628 } else if (!this.streamFeatures.hasChild("register")
629 && account.isOptionSet(Account.OPTION_REGISTER)) {
630 changeStatus(Account.STATUS_REGISTRATION_NOT_SUPPORTED);
631 disconnect(true);
632 } else if (this.streamFeatures.hasChild("mechanisms")
633 && shouldAuthenticate && usingEncryption) {
634 List<String> mechanisms = extractMechanisms(streamFeatures
635 .findChild("mechanisms"));
636 if (mechanisms.contains("PLAIN")) {
637 sendSaslAuthPlain();
638 } else if (mechanisms.contains("DIGEST-MD5")) {
639 sendSaslAuthDigestMd5();
640 }
641 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:"
642 + smVersion)
643 && streamId != null) {
644 ResumePacket resume = new ResumePacket(this.streamId,
645 stanzasReceived, smVersion);
646 this.tagWriter.writeStanzaAsync(resume);
647 } else if (this.streamFeatures.hasChild("bind") && shouldBind) {
648 sendBindRequest();
649 } else {
650 Log.d(Config.LOGTAG, account.getJid()
651 + ": incompatible server. disconnecting");
652 disconnect(true);
653 }
654 }
655
656 private boolean compressionAvailable() {
657 if (!this.streamFeatures.hasChild("compression",
658 "http://jabber.org/features/compress"))
659 return false;
660 if (!ZLibOutputStream.SUPPORTED)
661 return false;
662 if (!account.isOptionSet(Account.OPTION_USECOMPRESSION))
663 return false;
664
665 Element compression = this.streamFeatures.findChild("compression",
666 "http://jabber.org/features/compress");
667 for (Element child : compression.getChildren()) {
668 if (!"method".equals(child.getName()))
669 continue;
670
671 if ("zlib".equalsIgnoreCase(child.getContent())) {
672 return true;
673 }
674 }
675 return false;
676 }
677
678 private List<String> extractMechanisms(Element stream) {
679 ArrayList<String> mechanisms = new ArrayList<String>(stream
680 .getChildren().size());
681 for (Element child : stream.getChildren()) {
682 mechanisms.add(child.getContent());
683 }
684 return mechanisms;
685 }
686
687 private void sendRegistryRequest() {
688 IqPacket register = new IqPacket(IqPacket.TYPE_GET);
689 register.query("jabber:iq:register");
690 register.setTo(account.getServer());
691 sendIqPacket(register, new OnIqPacketReceived() {
692
693 @Override
694 public void onIqPacketReceived(Account account, IqPacket packet) {
695 Element instructions = packet.query().findChild("instructions");
696 if (packet.query().hasChild("username")
697 && (packet.query().hasChild("password"))) {
698 IqPacket register = new IqPacket(IqPacket.TYPE_SET);
699 Element username = new Element("username")
700 .setContent(account.getUsername());
701 Element password = new Element("password")
702 .setContent(account.getPassword());
703 register.query("jabber:iq:register").addChild(username);
704 register.query().addChild(password);
705 sendIqPacket(register, new OnIqPacketReceived() {
706
707 @Override
708 public void onIqPacketReceived(Account account,
709 IqPacket packet) {
710 if (packet.getType() == IqPacket.TYPE_RESULT) {
711 account.setOption(Account.OPTION_REGISTER,
712 false);
713 changeStatus(Account.STATUS_REGISTRATION_SUCCESSFULL);
714 } else if (packet.hasChild("error")
715 && (packet.findChild("error")
716 .hasChild("conflict"))) {
717 changeStatus(Account.STATUS_REGISTRATION_CONFLICT);
718 } else {
719 changeStatus(Account.STATUS_REGISTRATION_FAILED);
720 Log.d(Config.LOGTAG, packet.toString());
721 }
722 disconnect(true);
723 }
724 });
725 } else {
726 changeStatus(Account.STATUS_REGISTRATION_FAILED);
727 disconnect(true);
728 Log.d(Config.LOGTAG, account.getJid()
729 + ": could not register. instructions are"
730 + instructions.getContent());
731 }
732 }
733 });
734 }
735
736 private void sendBindRequest() throws IOException {
737 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
738 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
739 .addChild("resource").setContent(account.getResource());
740 this.sendUnboundIqPacket(iq, new OnIqPacketReceived() {
741 @Override
742 public void onIqPacketReceived(Account account, IqPacket packet) {
743 Element bind = packet.findChild("bind");
744 if (bind != null) {
745 Element jid = bind.findChild("jid");
746 if (jid != null && jid.getContent() != null) {
747 account.setResource(jid.getContent().split("/", 2)[1]);
748 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
749 smVersion = 3;
750 EnablePacket enable = new EnablePacket(smVersion);
751 tagWriter.writeStanzaAsync(enable);
752 stanzasSent = 0;
753 messageReceipts.clear();
754 } else if (streamFeatures.hasChild("sm",
755 "urn:xmpp:sm:2")) {
756 smVersion = 2;
757 EnablePacket enable = new EnablePacket(smVersion);
758 tagWriter.writeStanzaAsync(enable);
759 stanzasSent = 0;
760 messageReceipts.clear();
761 }
762 sendServiceDiscoveryInfo(account.getServer());
763 sendServiceDiscoveryItems(account.getServer());
764 if (bindListener != null) {
765 bindListener.onBind(account);
766 }
767 sendInitialPing();
768 } else {
769 disconnect(true);
770 }
771 } else {
772 disconnect(true);
773 }
774 }
775 });
776 if (this.streamFeatures.hasChild("session")) {
777 Log.d(Config.LOGTAG, account.getJid()
778 + ": sending deprecated session");
779 IqPacket startSession = new IqPacket(IqPacket.TYPE_SET);
780 startSession.addChild("session",
781 "urn:ietf:params:xml:ns:xmpp-session");
782 this.sendUnboundIqPacket(startSession, null);
783 }
784 }
785
786 private void sendServiceDiscoveryInfo(final String server) {
787 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
788 iq.setTo(server);
789 iq.query("http://jabber.org/protocol/disco#info");
790 this.sendIqPacket(iq, new OnIqPacketReceived() {
791
792 @Override
793 public void onIqPacketReceived(Account account, IqPacket packet) {
794 List<Element> elements = packet.query().getChildren();
795 List<String> features = new ArrayList<String>();
796 for (int i = 0; i < elements.size(); ++i) {
797 if (elements.get(i).getName().equals("feature")) {
798 features.add(elements.get(i).getAttribute("var"));
799 }
800 }
801 disco.put(server, features);
802
803 if (account.getServer().equals(server)) {
804 enableAdvancedStreamFeatures();
805 }
806 }
807 });
808 }
809
810 private void enableAdvancedStreamFeatures() {
811 if (getFeatures().carbons()) {
812 sendEnableCarbons();
813 }
814 }
815
816 private void sendServiceDiscoveryItems(final String server) {
817 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
818 iq.setTo(server);
819 iq.query("http://jabber.org/protocol/disco#items");
820 this.sendIqPacket(iq, new OnIqPacketReceived() {
821
822 @Override
823 public void onIqPacketReceived(Account account, IqPacket packet) {
824 List<Element> elements = packet.query().getChildren();
825 for (int i = 0; i < elements.size(); ++i) {
826 if (elements.get(i).getName().equals("item")) {
827 String jid = elements.get(i).getAttribute("jid");
828 sendServiceDiscoveryInfo(jid);
829 }
830 }
831 }
832 });
833 }
834
835 private void sendEnableCarbons() {
836 IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
837 iq.addChild("enable", "urn:xmpp:carbons:2");
838 this.sendIqPacket(iq, new OnIqPacketReceived() {
839
840 @Override
841 public void onIqPacketReceived(Account account, IqPacket packet) {
842 if (!packet.hasChild("error")) {
843 Log.d(Config.LOGTAG, account.getJid()
844 + ": successfully enabled carbons");
845 } else {
846 Log.d(Config.LOGTAG, account.getJid()
847 + ": error enableing carbons " + packet.toString());
848 }
849 }
850 });
851 }
852
853 private void processStreamError(Tag currentTag)
854 throws XmlPullParserException, IOException {
855 Element streamError = tagReader.readElement(currentTag);
856 if (streamError != null && streamError.hasChild("conflict")) {
857 String resource = account.getResource().split("\\.")[0];
858 account.setResource(resource + "." + nextRandomId());
859 Log.d(Config.LOGTAG,
860 account.getJid() + ": switching resource due to conflict ("
861 + account.getResource() + ")");
862 }
863 }
864
865 private void sendStartStream() throws IOException {
866 Tag stream = Tag.start("stream:stream");
867 stream.setAttribute("from", account.getJid());
868 stream.setAttribute("to", account.getServer());
869 stream.setAttribute("version", "1.0");
870 stream.setAttribute("xml:lang", "en");
871 stream.setAttribute("xmlns", "jabber:client");
872 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
873 tagWriter.writeTag(stream);
874 }
875
876 private String nextRandomId() {
877 return new BigInteger(50, mXmppConnectionService.getRNG()).toString(32);
878 }
879
880 public void sendIqPacket(IqPacket packet, OnIqPacketReceived callback) {
881 if (packet.getId() == null) {
882 String id = nextRandomId();
883 packet.setAttribute("id", id);
884 }
885 packet.setFrom(account.getFullJid());
886 this.sendPacket(packet, callback);
887 }
888
889 public void sendUnboundIqPacket(IqPacket packet, OnIqPacketReceived callback) {
890 if (packet.getId() == null) {
891 String id = nextRandomId();
892 packet.setAttribute("id", id);
893 }
894 this.sendPacket(packet, callback);
895 }
896
897 public void sendMessagePacket(MessagePacket packet) {
898 this.sendPacket(packet, null);
899 }
900
901 public void sendPresencePacket(PresencePacket packet) {
902 this.sendPacket(packet, null);
903 }
904
905 private synchronized void sendPacket(final AbstractStanza packet,
906 PacketReceived callback) {
907 if (packet.getName().equals("iq") || packet.getName().equals("message")
908 || packet.getName().equals("presence")) {
909 ++stanzasSent;
910 }
911 tagWriter.writeStanzaAsync(packet);
912 if (packet instanceof MessagePacket && packet.getId() != null
913 && this.streamId != null) {
914 Log.d(Config.LOGTAG, "request delivery report for stanza "
915 + stanzasSent);
916 this.messageReceipts.put(stanzasSent, packet.getId());
917 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
918 }
919 if (callback != null) {
920 if (packet.getId() == null) {
921 packet.setId(nextRandomId());
922 }
923 packetCallbacks.put(packet.getId(), callback);
924 }
925 }
926
927 public void sendPing() {
928 if (streamFeatures.hasChild("sm")) {
929 tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
930 } else {
931 IqPacket iq = new IqPacket(IqPacket.TYPE_GET);
932 iq.setFrom(account.getFullJid());
933 iq.addChild("ping", "urn:xmpp:ping");
934 this.sendIqPacket(iq, null);
935 }
936 this.lastPingSent = SystemClock.elapsedRealtime();
937 }
938
939 public void setOnMessagePacketReceivedListener(
940 OnMessagePacketReceived listener) {
941 this.messageListener = listener;
942 }
943
944 public void setOnUnregisteredIqPacketReceivedListener(
945 OnIqPacketReceived listener) {
946 this.unregisteredIqListener = listener;
947 }
948
949 public void setOnPresencePacketReceivedListener(
950 OnPresencePacketReceived listener) {
951 this.presenceListener = listener;
952 }
953
954 public void setOnJinglePacketReceivedListener(
955 OnJinglePacketReceived listener) {
956 this.jingleListener = listener;
957 }
958
959 public void setOnStatusChangedListener(OnStatusChanged listener) {
960 this.statusListener = listener;
961 }
962
963 public void setOnBindListener(OnBindListener listener) {
964 this.bindListener = listener;
965 }
966
967 public void setOnMessageAcknowledgeListener(OnMessageAcknowledged listener) {
968 this.acknowledgedListener = listener;
969 }
970
971 public void disconnect(boolean force) {
972 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting");
973 try {
974 if (force) {
975 socket.close();
976 return;
977 }
978 new Thread(new Runnable() {
979
980 @Override
981 public void run() {
982 if (tagWriter.isActive()) {
983 tagWriter.finish();
984 try {
985 while (!tagWriter.finished()) {
986 Log.d(Config.LOGTAG, "not yet finished");
987 Thread.sleep(100);
988 }
989 tagWriter.writeTag(Tag.end("stream:stream"));
990 socket.close();
991 } catch (IOException e) {
992 Log.d(Config.LOGTAG,
993 "io exception during disconnect");
994 } catch (InterruptedException e) {
995 Log.d(Config.LOGTAG, "interrupted");
996 }
997 }
998 }
999 }).start();
1000 } catch (IOException e) {
1001 Log.d(Config.LOGTAG, "io exception during disconnect");
1002 }
1003 }
1004
1005 public List<String> findDiscoItemsByFeature(String feature) {
1006 List<String> items = new ArrayList<String>();
1007 for (Entry<String, List<String>> cursor : disco.entrySet()) {
1008 if (cursor.getValue().contains(feature)) {
1009 items.add(cursor.getKey());
1010 }
1011 }
1012 return items;
1013 }
1014
1015 public String findDiscoItemByFeature(String feature) {
1016 List<String> items = findDiscoItemsByFeature(feature);
1017 if (items.size() >= 1) {
1018 return items.get(0);
1019 }
1020 return null;
1021 }
1022
1023 public void r() {
1024 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1025 }
1026
1027 public String getMucServer() {
1028 return findDiscoItemByFeature("http://jabber.org/protocol/muc");
1029 }
1030
1031 public int getTimeToNextAttempt() {
1032 int interval = (int) (25 * Math.pow(1.5, attempt));
1033 int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1034 return interval - secondsSinceLast;
1035 }
1036
1037 public int getAttempt() {
1038 return this.attempt;
1039 }
1040
1041 public Features getFeatures() {
1042 return this.features;
1043 }
1044
1045 public long getLastSessionEstablished() {
1046 long diff;
1047 if (this.lastSessionStarted == 0) {
1048 diff = SystemClock.elapsedRealtime() - this.lastConnect;
1049 } else {
1050 diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1051 }
1052 return System.currentTimeMillis() - diff;
1053 }
1054
1055 public long getLastConnect() {
1056 return this.lastConnect;
1057 }
1058
1059 public long getLastPingSent() {
1060 return this.lastPingSent;
1061 }
1062
1063 public long getLastPacketReceived() {
1064 return this.lastPaketReceived;
1065 }
1066
1067 public void sendActive() {
1068 this.sendPacket(new ActivePacket(), null);
1069 }
1070
1071 public void sendInactive() {
1072 this.sendPacket(new InactivePacket(), null);
1073 }
1074
1075 public class Features {
1076 XmppConnection connection;
1077
1078 public Features(XmppConnection connection) {
1079 this.connection = connection;
1080 }
1081
1082 private boolean hasDiscoFeature(String server, String feature) {
1083 if (!connection.disco.containsKey(server)) {
1084 return false;
1085 }
1086 return connection.disco.get(server).contains(feature);
1087 }
1088
1089 public boolean carbons() {
1090 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
1091 }
1092
1093 public boolean sm() {
1094 return streamId != null;
1095 }
1096
1097 public boolean csi() {
1098 if (connection.streamFeatures == null) {
1099 return false;
1100 } else {
1101 return connection.streamFeatures.hasChild("csi",
1102 "urn:xmpp:csi:0");
1103 }
1104 }
1105
1106 public boolean pubsub() {
1107 return hasDiscoFeature(account.getServer(),
1108 "http://jabber.org/protocol/pubsub#publish");
1109 }
1110
1111 public boolean mam() {
1112 return hasDiscoFeature(account.getServer(), "urn:xmpp:mam:0");
1113 }
1114
1115 public boolean rosterVersioning() {
1116 if (connection.streamFeatures == null) {
1117 return false;
1118 } else {
1119 return connection.streamFeatures.hasChild("ver");
1120 }
1121 }
1122
1123 public boolean streamhost() {
1124 return connection
1125 .findDiscoItemByFeature("http://jabber.org/protocol/bytestreams") != null;
1126 }
1127
1128 public boolean compression() {
1129 return connection.usingCompression;
1130 }
1131 }
1132}