1package eu.siacs.conversations.xmpp;
2
3import android.graphics.Bitmap;
4import android.graphics.BitmapFactory;
5import android.os.Bundle;
6import android.os.Parcelable;
7import android.os.PowerManager;
8import android.os.PowerManager.WakeLock;
9import android.os.SystemClock;
10import android.security.KeyChain;
11import android.util.Base64;
12import android.util.Log;
13import android.util.Pair;
14import android.util.SparseArray;
15
16import org.json.JSONException;
17import org.json.JSONObject;
18import org.xmlpull.v1.XmlPullParserException;
19
20import java.io.ByteArrayInputStream;
21import java.io.IOException;
22import java.io.InputStream;
23import java.io.OutputStream;
24import java.math.BigInteger;
25import java.net.ConnectException;
26import java.net.IDN;
27import java.net.InetAddress;
28import java.net.InetSocketAddress;
29import java.net.Socket;
30import java.net.UnknownHostException;
31import java.net.URL;
32import java.security.KeyManagementException;
33import java.security.NoSuchAlgorithmException;
34import java.security.Principal;
35import java.security.PrivateKey;
36import java.security.cert.X509Certificate;
37import java.util.ArrayList;
38import java.util.Arrays;
39import java.util.Collection;
40import java.util.HashMap;
41import java.util.Hashtable;
42import java.util.Iterator;
43import java.util.LinkedList;
44import java.util.List;
45import java.util.Map.Entry;
46
47import javax.net.ssl.HostnameVerifier;
48import javax.net.ssl.KeyManager;
49import javax.net.ssl.SSLContext;
50import javax.net.ssl.SSLSocket;
51import javax.net.ssl.SSLSocketFactory;
52import javax.net.ssl.X509KeyManager;
53import javax.net.ssl.X509TrustManager;
54
55import de.duenndns.ssl.MemorizingTrustManager;
56import eu.siacs.conversations.Config;
57import eu.siacs.conversations.crypto.XmppDomainVerifier;
58import eu.siacs.conversations.crypto.sasl.DigestMd5;
59import eu.siacs.conversations.crypto.sasl.External;
60import eu.siacs.conversations.crypto.sasl.Plain;
61import eu.siacs.conversations.crypto.sasl.SaslMechanism;
62import eu.siacs.conversations.crypto.sasl.ScramSha1;
63import eu.siacs.conversations.entities.Account;
64import eu.siacs.conversations.entities.Message;
65import eu.siacs.conversations.generator.IqGenerator;
66import eu.siacs.conversations.services.XmppConnectionService;
67import eu.siacs.conversations.utils.CryptoHelper;
68import eu.siacs.conversations.utils.DNSHelper;
69import eu.siacs.conversations.utils.SocksSocketFactory;
70import eu.siacs.conversations.utils.Xmlns;
71import eu.siacs.conversations.xml.Element;
72import eu.siacs.conversations.xml.Tag;
73import eu.siacs.conversations.xml.TagWriter;
74import eu.siacs.conversations.xml.XmlReader;
75import eu.siacs.conversations.xmpp.forms.Data;
76import eu.siacs.conversations.xmpp.forms.Field;
77import eu.siacs.conversations.xmpp.jid.InvalidJidException;
78import eu.siacs.conversations.xmpp.jid.Jid;
79import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
80import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
81import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
82import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
83import eu.siacs.conversations.xmpp.stanzas.IqPacket;
84import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
85import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
86import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
87import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
88import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
89import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
90import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
91import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
92
93public class XmppConnection implements Runnable {
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 protected Account account;
99 private final WakeLock wakeLock;
100 private Socket socket;
101 private XmlReader tagReader;
102 private TagWriter tagWriter;
103 private final Features features = new Features(this);
104 private boolean needsBinding = true;
105 private boolean shouldAuthenticate = true;
106 private Element streamFeatures;
107 private final HashMap<Jid, Info> disco = new HashMap<>();
108
109 private String streamId = null;
110 private int smVersion = 3;
111 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
112
113 private int stanzasReceived = 0;
114 private int stanzasSent = 0;
115 private long lastPacketReceived = 0;
116 private long lastPingSent = 0;
117 private long lastConnect = 0;
118 private long lastSessionStarted = 0;
119 private long lastDiscoStarted = 0;
120 private int mPendingServiceDiscoveries = 0;
121 private final ArrayList<String> mPendingServiceDiscoveriesIds = new ArrayList<>();
122 private boolean mInteractive = false;
123 private int attempt = 0;
124 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
125 private OnPresencePacketReceived presenceListener = null;
126 private OnJinglePacketReceived jingleListener = null;
127 private OnIqPacketReceived unregisteredIqListener = null;
128 private OnMessagePacketReceived messageListener = null;
129 private OnStatusChanged statusListener = null;
130 private OnBindListener bindListener = null;
131 private final ArrayList<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new ArrayList<>();
132 private OnMessageAcknowledged acknowledgedListener = null;
133 private XmppConnectionService mXmppConnectionService = null;
134
135 private SaslMechanism saslMechanism;
136
137 private X509KeyManager mKeyManager = new X509KeyManager() {
138 @Override
139 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
140 return account.getPrivateKeyAlias();
141 }
142
143 @Override
144 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
145 return null;
146 }
147
148 @Override
149 public X509Certificate[] getCertificateChain(String alias) {
150 try {
151 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
152 } catch (Exception e) {
153 return new X509Certificate[0];
154 }
155 }
156
157 @Override
158 public String[] getClientAliases(String s, Principal[] principals) {
159 return new String[0];
160 }
161
162 @Override
163 public String[] getServerAliases(String s, Principal[] principals) {
164 return new String[0];
165 }
166
167 @Override
168 public PrivateKey getPrivateKey(String alias) {
169 try {
170 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
171 } catch (Exception e) {
172 return null;
173 }
174 }
175 };
176 private Identity mServerIdentity = Identity.UNKNOWN;
177
178 private OnIqPacketReceived createPacketReceiveHandler() {
179 return new OnIqPacketReceived() {
180 @Override
181 public void onIqPacketReceived(Account account, IqPacket packet) {
182 if (packet.getType() == IqPacket.TYPE.RESULT) {
183 account.setOption(Account.OPTION_REGISTER,
184 false);
185 changeStatus(Account.State.REGISTRATION_SUCCESSFUL);
186 } else if (packet.hasChild("error")
187 && (packet.findChild("error")
188 .hasChild("conflict"))) {
189 changeStatus(Account.State.REGISTRATION_CONFLICT);
190 } else {
191 changeStatus(Account.State.REGISTRATION_FAILED);
192 Log.d(Config.LOGTAG, packet.toString());
193 }
194 disconnect(true);
195 }
196 };
197 }
198
199 public XmppConnection(final Account account, final XmppConnectionService service) {
200 this.account = account;
201 this.wakeLock = service.getPowerManager().newWakeLock(
202 PowerManager.PARTIAL_WAKE_LOCK, account.getJid().toBareJid().toString());
203 tagWriter = new TagWriter();
204 mXmppConnectionService = service;
205 }
206
207 protected void changeStatus(final Account.State nextStatus) {
208 if (account.getStatus() != nextStatus) {
209 if ((nextStatus == Account.State.OFFLINE)
210 && (account.getStatus() != Account.State.CONNECTING)
211 && (account.getStatus() != Account.State.ONLINE)
212 && (account.getStatus() != Account.State.DISABLED)) {
213 return;
214 }
215 if (nextStatus == Account.State.ONLINE) {
216 this.attempt = 0;
217 }
218 account.setStatus(nextStatus);
219 if (statusListener != null) {
220 statusListener.onStatusChanged(account);
221 }
222 }
223 }
224
225 protected void connect() {
226 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": connecting");
227 features.encryptionEnabled = false;
228 lastConnect = SystemClock.elapsedRealtime();
229 lastPingSent = SystemClock.elapsedRealtime();
230 lastDiscoStarted = Long.MAX_VALUE;
231 this.attempt++;
232 if (account.getJid().getDomainpart().equals("chat.facebook.com")) {
233 mServerIdentity = Identity.FACEBOOK;
234 }
235 try {
236 shouldAuthenticate = needsBinding = !account.isOptionSet(Account.OPTION_REGISTER);
237 tagReader = new XmlReader(wakeLock);
238 tagWriter = new TagWriter();
239 this.changeStatus(Account.State.CONNECTING);
240 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
241 if (useTor) {
242 String destination;
243 if (account.getHostname() == null || account.getHostname().isEmpty()) {
244 destination = account.getServer().toString();
245 } else {
246 destination = account.getHostname();
247 }
248 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": connect to "+destination+" via TOR");
249 socket = SocksSocketFactory.createSocketOverTor(destination,account.getPort());
250 } else if (DNSHelper.isIp(account.getServer().toString())) {
251 socket = new Socket();
252 try {
253 socket.connect(new InetSocketAddress(account.getServer().toString(), 5222), Config.SOCKET_TIMEOUT * 1000);
254 } catch (IOException e) {
255 throw new UnknownHostException();
256 }
257 } else {
258 final Bundle result = DNSHelper.getSRVRecord(account.getServer(),mXmppConnectionService);
259 final ArrayList<Parcelable>values = result.getParcelableArrayList("values");
260 int i = 0;
261 boolean socketError = true;
262 while (socketError && values.size() > i) {
263 final Bundle namePort = (Bundle) values.get(i);
264 try {
265 String srvRecordServer;
266 try {
267 srvRecordServer = IDN.toASCII(namePort.getString("name"));
268 } catch (final IllegalArgumentException e) {
269 // TODO: Handle me?`
270 srvRecordServer = "";
271 }
272 final int srvRecordPort = namePort.getInt("port");
273 final String srvIpServer = namePort.getString("ip");
274 final InetSocketAddress addr;
275 if (srvIpServer != null) {
276 addr = new InetSocketAddress(srvIpServer, srvRecordPort);
277 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
278 + ": using values from dns " + srvRecordServer
279 + "[" + srvIpServer + "]:" + srvRecordPort);
280 } else {
281 addr = new InetSocketAddress(srvRecordServer, srvRecordPort);
282 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
283 + ": using values from dns "
284 + srvRecordServer + ":" + srvRecordPort);
285 }
286 socket = new Socket();
287 socket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
288 socketError = false;
289 } catch (final Throwable e) {
290 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage() +"("+e.getClass().getName()+")");
291 i++;
292 }
293 }
294 if (socketError) {
295 throw new UnknownHostException();
296 }
297 }
298 final OutputStream out = socket.getOutputStream();
299 tagWriter.setOutputStream(out);
300 final InputStream in = socket.getInputStream();
301 tagReader.setInputStream(in);
302 tagWriter.beginDocument();
303 sendStartStream();
304 Tag nextTag;
305 while ((nextTag = tagReader.readTag()) != null) {
306 if (nextTag.isStart("stream")) {
307 processStream();
308 break;
309 } else {
310 throw new IOException("unknown tag on connect");
311 }
312 }
313 if (socket.isConnected()) {
314 socket.close();
315 }
316 } catch (final IncompatibleServerException e) {
317 this.changeStatus(Account.State.INCOMPATIBLE_SERVER);
318 } catch (final SecurityException e) {
319 this.changeStatus(Account.State.SECURITY_ERROR);
320 } catch (final UnauthorizedException e) {
321 this.changeStatus(Account.State.UNAUTHORIZED);
322 } catch (final UnknownHostException | ConnectException e) {
323 this.changeStatus(Account.State.SERVER_NOT_FOUND);
324 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
325 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
326 } catch (final IOException | XmlPullParserException | NoSuchAlgorithmException e) {
327 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
328 this.changeStatus(Account.State.OFFLINE);
329 this.attempt--; //don't count attempt when reconnecting instantly anyway
330 } finally {
331 if (socket != null) {
332 try {
333 socket.close();
334 } catch (IOException e) {
335
336 }
337 }
338 if (wakeLock.isHeld()) {
339 try {
340 wakeLock.release();
341 } catch (final RuntimeException ignored) {
342 }
343 }
344 }
345 }
346
347 @Override
348 public void run() {
349 try {
350 if (socket != null) {
351 socket.close();
352 }
353 } catch (final IOException ignored) {
354
355 }
356 connect();
357 }
358
359 private void processStream() throws XmlPullParserException, IOException, NoSuchAlgorithmException {
360 Tag nextTag = tagReader.readTag();
361 while (nextTag != null && !nextTag.isEnd("stream")) {
362 if (nextTag.isStart("error")) {
363 processStreamError(nextTag);
364 } else if (nextTag.isStart("features")) {
365 processStreamFeatures(nextTag);
366 } else if (nextTag.isStart("proceed")) {
367 switchOverToTls(nextTag);
368 } else if (nextTag.isStart("success")) {
369 final String challenge = tagReader.readElement(nextTag).getContent();
370 try {
371 saslMechanism.getResponse(challenge);
372 } catch (final SaslMechanism.AuthenticationException e) {
373 disconnect(true);
374 Log.e(Config.LOGTAG, String.valueOf(e));
375 }
376 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": logged in");
377 account.setKey(Account.PINNED_MECHANISM_KEY,
378 String.valueOf(saslMechanism.getPriority()));
379 tagReader.reset();
380 sendStartStream();
381 final Tag tag = tagReader.readTag();
382 if (tag != null && tag.isStart("stream")) {
383 processStream();
384 } else {
385 throw new IOException("server didn't restart stream after successful auth");
386 }
387 break;
388 } else if (nextTag.isStart("failure")) {
389 throw new UnauthorizedException();
390 } else if (nextTag.isStart("challenge")) {
391 final String challenge = tagReader.readElement(nextTag).getContent();
392 final Element response = new Element("response");
393 response.setAttribute("xmlns",
394 "urn:ietf:params:xml:ns:xmpp-sasl");
395 try {
396 response.setContent(saslMechanism.getResponse(challenge));
397 } catch (final SaslMechanism.AuthenticationException e) {
398 // TODO: Send auth abort tag.
399 Log.e(Config.LOGTAG, e.toString());
400 }
401 tagWriter.writeElement(response);
402 } else if (nextTag.isStart("enabled")) {
403 final Element enabled = tagReader.readElement(nextTag);
404 if ("true".equals(enabled.getAttribute("resume"))) {
405 this.streamId = enabled.getAttribute("id");
406 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
407 + ": stream managment(" + smVersion
408 + ") enabled (resumable)");
409 } else {
410 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
411 + ": stream management(" + smVersion + ") enabled");
412 }
413 this.stanzasReceived = 0;
414 final RequestPacket r = new RequestPacket(smVersion);
415 tagWriter.writeStanzaAsync(r);
416 } else if (nextTag.isStart("resumed")) {
417 lastPacketReceived = SystemClock.elapsedRealtime();
418 final Element resumed = tagReader.readElement(nextTag);
419 final String h = resumed.getAttribute("h");
420 try {
421 final int serverCount = Integer.parseInt(h);
422 if (serverCount != stanzasSent) {
423 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
424 + ": session resumed with lost packages");
425 stanzasSent = serverCount;
426 } else {
427 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": session resumed");
428 }
429 acknowledgeStanzaUpTo(serverCount);
430 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
431 for(int i = 0; i < this.mStanzaQueue.size(); ++i) {
432 failedStanzas.add(mStanzaQueue.valueAt(i));
433 }
434 mStanzaQueue.clear();
435 Log.d(Config.LOGTAG,"resending "+failedStanzas.size()+" stanzas");
436 for(AbstractAcknowledgeableStanza packet : failedStanzas) {
437 if (packet instanceof MessagePacket) {
438 MessagePacket message = (MessagePacket) packet;
439 mXmppConnectionService.markMessage(account,
440 message.getTo().toBareJid(),
441 message.getId(),
442 Message.STATUS_UNSEND);
443 }
444 sendPacket(packet);
445 }
446 } catch (final NumberFormatException ignored) {
447 }
448 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": online with resource " + account.getResource());
449 changeStatus(Account.State.ONLINE);
450 } else if (nextTag.isStart("r")) {
451 tagReader.readElement(nextTag);
452 if (Config.EXTENDED_SM_LOGGING) {
453 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
454 }
455 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
456 tagWriter.writeStanzaAsync(ack);
457 } else if (nextTag.isStart("a")) {
458 final Element ack = tagReader.readElement(nextTag);
459 lastPacketReceived = SystemClock.elapsedRealtime();
460 try {
461 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
462 acknowledgeStanzaUpTo(serverSequence);
463 } catch (NumberFormatException e) {
464 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": server send ack without sequence number");
465 }
466 } else if (nextTag.isStart("failed")) {
467 tagReader.readElement(nextTag);
468 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": resumption failed");
469 streamId = null;
470 if (account.getStatus() != Account.State.ONLINE) {
471 sendBindRequest();
472 }
473 } else if (nextTag.isStart("iq")) {
474 processIq(nextTag);
475 } else if (nextTag.isStart("message")) {
476 processMessage(nextTag);
477 } else if (nextTag.isStart("presence")) {
478 processPresence(nextTag);
479 }
480 nextTag = tagReader.readTag();
481 }
482 throw new IOException("reached end of stream. last tag was "+nextTag);
483 }
484
485 private void acknowledgeStanzaUpTo(int serverCount) {
486 for (int i = 0; i < mStanzaQueue.size(); ++i) {
487 if (serverCount >= mStanzaQueue.keyAt(i)) {
488 if (Config.EXTENDED_SM_LOGGING) {
489 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
490 }
491 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
492 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
493 MessagePacket packet = (MessagePacket) stanza;
494 acknowledgedListener.onMessageAcknowledged(account, packet.getId());
495 }
496 mStanzaQueue.removeAt(i);
497 i--;
498 }
499 }
500 }
501
502 private Element processPacket(final Tag currentTag, final int packetType)
503 throws XmlPullParserException, IOException {
504 Element element;
505 switch (packetType) {
506 case PACKET_IQ:
507 element = new IqPacket();
508 break;
509 case PACKET_MESSAGE:
510 element = new MessagePacket();
511 break;
512 case PACKET_PRESENCE:
513 element = new PresencePacket();
514 break;
515 default:
516 return null;
517 }
518 element.setAttributes(currentTag.getAttributes());
519 Tag nextTag = tagReader.readTag();
520 if (nextTag == null) {
521 throw new IOException("interrupted mid tag");
522 }
523 while (!nextTag.isEnd(element.getName())) {
524 if (!nextTag.isNo()) {
525 final Element child = tagReader.readElement(nextTag);
526 final String type = currentTag.getAttribute("type");
527 if (packetType == PACKET_IQ
528 && "jingle".equals(child.getName())
529 && ("set".equalsIgnoreCase(type) || "get"
530 .equalsIgnoreCase(type))) {
531 element = new JinglePacket();
532 element.setAttributes(currentTag.getAttributes());
533 }
534 element.addChild(child);
535 }
536 nextTag = tagReader.readTag();
537 if (nextTag == null) {
538 throw new IOException("interrupted mid tag");
539 }
540 }
541 if (stanzasReceived == Integer.MAX_VALUE) {
542 resetStreamId();
543 throw new IOException("time to restart the session. cant handle >2 billion pcks");
544 }
545 ++stanzasReceived;
546 lastPacketReceived = SystemClock.elapsedRealtime();
547 return element;
548 }
549
550 private void processIq(final Tag currentTag) throws XmlPullParserException, IOException {
551 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
552
553 if (packet.getId() == null) {
554 return; // an iq packet without id is definitely invalid
555 }
556
557 if (packet instanceof JinglePacket) {
558 if (this.jingleListener != null) {
559 this.jingleListener.onJinglePacketReceived(account,(JinglePacket) packet);
560 }
561 } else {
562 OnIqPacketReceived callback = null;
563 synchronized (this.packetCallbacks) {
564 if (packetCallbacks.containsKey(packet.getId())) {
565 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
566 // Packets to the server should have responses from the server
567 if (packetCallbackDuple.first.toServer(account)) {
568 if (packet.fromServer(account) || mServerIdentity == Identity.FACEBOOK) {
569 callback = packetCallbackDuple.second;
570 packetCallbacks.remove(packet.getId());
571 } else {
572 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
573 }
574 } else {
575 if (packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
576 callback = packetCallbackDuple.second;
577 packetCallbacks.remove(packet.getId());
578 } else {
579 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
580 }
581 }
582 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
583 callback = this.unregisteredIqListener;
584 }
585 }
586 if (callback != null) {
587 callback.onIqPacketReceived(account,packet);
588 }
589 }
590 }
591
592 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
593 final MessagePacket packet = (MessagePacket) processPacket(currentTag,PACKET_MESSAGE);
594 this.messageListener.onMessagePacketReceived(account, packet);
595 }
596
597 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
598 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
599 this.presenceListener.onPresencePacketReceived(account, packet);
600 }
601
602 private void sendStartTLS() throws IOException {
603 final Tag startTLS = Tag.empty("starttls");
604 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
605 tagWriter.writeTag(startTLS);
606 }
607
608 private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
609 tagReader.readTag();
610 try {
611 final SSLContext sc = SSLContext.getInstance("TLS");
612 MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
613 KeyManager[] keyManager;
614 if (account.getPrivateKeyAlias() != null && account.getPassword().isEmpty()) {
615 keyManager = new KeyManager[]{ mKeyManager };
616 } else {
617 keyManager = null;
618 }
619 sc.init(keyManager,new X509TrustManager[]{mInteractive ? trustManager : trustManager.getNonInteractive()},mXmppConnectionService.getRNG());
620 final SSLSocketFactory factory = sc.getSocketFactory();
621 final HostnameVerifier verifier;
622 if (mInteractive) {
623 verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier());
624 } else {
625 verifier = trustManager.wrapHostnameVerifierNonInteractive(new XmppDomainVerifier());
626 }
627 final InetAddress address = socket == null ? null : socket.getInetAddress();
628
629 if (factory == null || address == null || verifier == null) {
630 throw new IOException("could not setup ssl");
631 }
632
633 final SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,address.getHostAddress(), socket.getPort(),true);
634
635 if (sslSocket == null) {
636 throw new IOException("could not initialize ssl socket");
637 }
638
639 final String[] supportProtocols;
640 final Collection<String> supportedProtocols = new LinkedList<>(
641 Arrays.asList(sslSocket.getSupportedProtocols()));
642 supportedProtocols.remove("SSLv3");
643 supportProtocols = supportedProtocols.toArray(new String[supportedProtocols.size()]);
644
645 sslSocket.setEnabledProtocols(supportProtocols);
646
647 final String[] cipherSuites = CryptoHelper.getOrderedCipherSuites(
648 sslSocket.getSupportedCipherSuites());
649 //Log.d(Config.LOGTAG, "Using ciphers: " + Arrays.toString(cipherSuites));
650 if (cipherSuites.length > 0) {
651 sslSocket.setEnabledCipherSuites(cipherSuites);
652 }
653
654 if (!verifier.verify(account.getServer().getDomainpart(),sslSocket.getSession())) {
655 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": TLS certificate verification failed");
656 throw new SecurityException();
657 }
658 tagReader.setInputStream(sslSocket.getInputStream());
659 tagWriter.setOutputStream(sslSocket.getOutputStream());
660 sendStartStream();
661 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": TLS connection established");
662 features.encryptionEnabled = true;
663 final Tag tag = tagReader.readTag();
664 if (tag != null && tag.isStart("stream")) {
665 processStream();
666 } else {
667 throw new IOException("server didn't restart stream after STARTTLS");
668 }
669 sslSocket.close();
670 } catch (final NoSuchAlgorithmException | KeyManagementException e1) {
671 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": TLS certificate verification failed");
672 throw new SecurityException();
673 }
674 }
675
676 private void processStreamFeatures(final Tag currentTag)
677 throws XmlPullParserException, IOException {
678 this.streamFeatures = tagReader.readElement(currentTag);
679 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
680 sendStartTLS();
681 } else if (this.streamFeatures.hasChild("register")
682 && account.isOptionSet(Account.OPTION_REGISTER)
683 && features.encryptionEnabled) {
684 sendRegistryRequest();
685 } else if (!this.streamFeatures.hasChild("register")
686 && account.isOptionSet(Account.OPTION_REGISTER)) {
687 changeStatus(Account.State.REGISTRATION_NOT_SUPPORTED);
688 disconnect(true);
689 } else if (this.streamFeatures.hasChild("mechanisms")
690 && shouldAuthenticate && features.encryptionEnabled) {
691 final List<String> mechanisms = extractMechanisms(streamFeatures
692 .findChild("mechanisms"));
693 final Element auth = new Element("auth");
694 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
695 if (mechanisms.contains("EXTERNAL") && account.getPrivateKeyAlias() != null) {
696 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
697 } else if (mechanisms.contains("SCRAM-SHA-1")) {
698 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
699 } else if (mechanisms.contains("PLAIN")) {
700 saslMechanism = new Plain(tagWriter, account);
701 } else if (mechanisms.contains("DIGEST-MD5")) {
702 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
703 }
704 if (saslMechanism != null) {
705 final JSONObject keys = account.getKeys();
706 try {
707 if (keys.has(Account.PINNED_MECHANISM_KEY) &&
708 keys.getInt(Account.PINNED_MECHANISM_KEY) > saslMechanism.getPriority()) {
709 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
710 " has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
711 ") than pinned priority (" + keys.getInt(Account.PINNED_MECHANISM_KEY) +
712 "). Possible downgrade attack?");
713 throw new SecurityException();
714 }
715 } catch (final JSONException e) {
716 Log.d(Config.LOGTAG, "Parse error while checking pinned auth mechanism");
717 }
718 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
719 auth.setAttribute("mechanism", saslMechanism.getMechanism());
720 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
721 auth.setContent(saslMechanism.getClientFirstMessage());
722 }
723 tagWriter.writeElement(auth);
724 } else {
725 throw new IncompatibleServerException();
726 }
727 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
728 if (Config.EXTENDED_SM_LOGGING) {
729 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": resuming after stanza #"+stanzasReceived);
730 }
731 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
732 this.tagWriter.writeStanzaAsync(resume);
733 } else if (needsBinding) {
734 if (this.streamFeatures.hasChild("bind")) {
735 sendBindRequest();
736 } else {
737 throw new IncompatibleServerException();
738 }
739 }
740 }
741
742 private List<String> extractMechanisms(final Element stream) {
743 final ArrayList<String> mechanisms = new ArrayList<>(stream
744 .getChildren().size());
745 for (final Element child : stream.getChildren()) {
746 mechanisms.add(child.getContent());
747 }
748 return mechanisms;
749 }
750
751 public void sendCaptchaRegistryRequest(String id, Data data) {
752 if (data == null) {
753 setAccountCreationFailed("");
754 } else {
755 IqPacket request = getIqGenerator().generateCreateAccountWithCaptcha(account, id, data);
756 sendIqPacket(request, createPacketReceiveHandler());
757 }
758 }
759
760 private void sendRegistryRequest() {
761 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
762 register.query("jabber:iq:register");
763 register.setTo(account.getServer());
764 sendIqPacket(register, new OnIqPacketReceived() {
765
766 @Override
767 public void onIqPacketReceived(final Account account, final IqPacket packet) {
768 boolean failed = false;
769 if (packet.getType() == IqPacket.TYPE.RESULT
770 && packet.query().hasChild("username")
771 && (packet.query().hasChild("password"))) {
772 final IqPacket register = new IqPacket(IqPacket.TYPE.SET);
773 final Element username = new Element("username").setContent(account.getUsername());
774 final Element password = new Element("password").setContent(account.getPassword());
775 register.query("jabber:iq:register").addChild(username);
776 register.query().addChild(password);
777 sendIqPacket(register, createPacketReceiveHandler());
778 } else if (packet.getType() == IqPacket.TYPE.RESULT
779 && (packet.query().hasChild("x", "jabber:x:data"))) {
780 final Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
781 final Element blob = packet.query().findChild("data", "urn:xmpp:bob");
782 final String id = packet.getId();
783
784 Bitmap captcha = null;
785 if (blob != null) {
786 try {
787 final String base64Blob = blob.getContent();
788 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
789 InputStream stream = new ByteArrayInputStream(strBlob);
790 captcha = BitmapFactory.decodeStream(stream);
791 } catch (Exception e) {
792 //ignored
793 }
794 } else {
795 try {
796 Field url = data.getFieldByName("url");
797 String urlString = url.findChildContent("value");
798 URL uri = new URL(urlString);
799 captcha = BitmapFactory.decodeStream(uri.openConnection().getInputStream());
800 } catch (IOException e) {
801 Log.e(Config.LOGTAG, e.toString());
802 }
803 }
804
805 if (captcha != null) {
806 failed = !mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha);
807 }
808 } else {
809 failed = true;
810 }
811
812 if (failed) {
813 final Element instructions = packet.query().findChild("instructions");
814 setAccountCreationFailed((instructions != null) ? instructions.getContent() : "");
815 }
816 }
817 });
818 }
819
820 private void setAccountCreationFailed(String instructions) {
821 changeStatus(Account.State.REGISTRATION_FAILED);
822 disconnect(true);
823 Log.d(Config.LOGTAG, account.getJid().toBareJid()
824 + ": could not register. instructions are"
825 + instructions);
826 }
827
828 private void sendBindRequest() {
829 while(!mXmppConnectionService.areMessagesInitialized() && socket != null && !socket.isClosed()) {
830 try {
831 Thread.sleep(500);
832 } catch (final InterruptedException ignored) {
833 }
834 }
835 needsBinding = false;
836 clearIqCallbacks();
837 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
838 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
839 .addChild("resource").setContent(account.getResource());
840 this.sendUnmodifiedIqPacket(iq, new OnIqPacketReceived() {
841 @Override
842 public void onIqPacketReceived(final Account account, final IqPacket packet) {
843 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
844 return;
845 }
846 final Element bind = packet.findChild("bind");
847 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
848 final Element jid = bind.findChild("jid");
849 if (jid != null && jid.getContent() != null) {
850 try {
851 account.setResource(Jid.fromString(jid.getContent()).getResourcepart());
852 } catch (final InvalidJidException e) {
853 // TODO: Handle the case where an external JID is technically invalid?
854 }
855 if (streamFeatures.hasChild("session")) {
856 sendStartSession();
857 } else {
858 sendPostBindInitialization();
859 }
860 } else {
861 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure");
862 disconnect(true);
863 }
864 } else {
865 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure");
866 disconnect(true);
867 }
868 }
869 });
870 }
871
872 private void clearIqCallbacks() {
873 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
874 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
875 synchronized (this.packetCallbacks) {
876 if (this.packetCallbacks.size() == 0) {
877 return;
878 }
879 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": clearing "+this.packetCallbacks.size()+" iq callbacks");
880 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
881 while (iterator.hasNext()) {
882 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
883 callbacks.add(entry.second);
884 iterator.remove();
885 }
886 }
887 for(OnIqPacketReceived callback : callbacks) {
888 callback.onIqPacketReceived(account,failurePacket);
889 }
890 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
891 }
892
893 public void sendDiscoTimeout() {
894 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.ERROR); //don't use timeout
895 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
896 synchronized (this.mPendingServiceDiscoveriesIds) {
897 for(String id : mPendingServiceDiscoveriesIds) {
898 synchronized (this.packetCallbacks) {
899 Pair<IqPacket, OnIqPacketReceived> pair = this.packetCallbacks.remove(id);
900 if (pair != null) {
901 callbacks.add(pair.second);
902 }
903 }
904 }
905 this.mPendingServiceDiscoveriesIds.clear();
906 }
907 if (callbacks.size() > 0) {
908 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": sending disco timeout");
909 resetStreamId(); //we don't want to live with this for ever
910 }
911 for(OnIqPacketReceived callback : callbacks) {
912 callback.onIqPacketReceived(account,failurePacket);
913 }
914 }
915
916 private void sendStartSession() {
917 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
918 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
919 this.sendUnmodifiedIqPacket(startSession, new OnIqPacketReceived() {
920 @Override
921 public void onIqPacketReceived(Account account, IqPacket packet) {
922 if (packet.getType() == IqPacket.TYPE.RESULT) {
923 sendPostBindInitialization();
924 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
925 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not init sessions");
926 disconnect(true);
927 }
928 }
929 });
930 }
931
932 private void sendPostBindInitialization() {
933 smVersion = 0;
934 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
935 smVersion = 3;
936 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
937 smVersion = 2;
938 }
939 if (smVersion != 0) {
940 final EnablePacket enable = new EnablePacket(smVersion);
941 tagWriter.writeStanzaAsync(enable);
942 stanzasSent = 0;
943 mStanzaQueue.clear();
944 }
945 features.carbonsEnabled = false;
946 features.blockListRequested = false;
947 synchronized (this.disco) {
948 this.disco.clear();
949 }
950 mPendingServiceDiscoveries = 0;
951 lastDiscoStarted = SystemClock.elapsedRealtime();
952 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": starting service discovery");
953 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
954 sendServiceDiscoveryItems(account.getServer());
955 sendServiceDiscoveryInfo(account.getServer());
956 sendServiceDiscoveryInfo(account.getJid().toBareJid());
957 this.lastSessionStarted = SystemClock.elapsedRealtime();
958 }
959
960 private void sendServiceDiscoveryInfo(final Jid jid) {
961 mPendingServiceDiscoveries++;
962 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
963 iq.setTo(jid);
964 iq.query("http://jabber.org/protocol/disco#info");
965 String id = this.sendIqPacket(iq, new OnIqPacketReceived() {
966
967 @Override
968 public void onIqPacketReceived(final Account account, final IqPacket packet) {
969 if (packet.getType() == IqPacket.TYPE.RESULT) {
970 boolean advancedStreamFeaturesLoaded = false;
971 synchronized (XmppConnection.this.disco) {
972 final List<Element> elements = packet.query().getChildren();
973 final Info info = new Info();
974 for (final Element element : elements) {
975 if (element.getName().equals("identity")) {
976 String type = element.getAttribute("type");
977 String category = element.getAttribute("category");
978 String name = element.getAttribute("name");
979 if (type != null && category != null) {
980 info.identities.add(new Pair<>(category, type));
981 if (type.equals("im") && category.equals("server")) {
982 if (name != null && jid.equals(account.getServer())) {
983 switch (name) {
984 case "Prosody":
985 mServerIdentity = Identity.PROSODY;
986 break;
987 case "ejabberd":
988 mServerIdentity = Identity.EJABBERD;
989 break;
990 case "Slack-XMPP":
991 mServerIdentity = Identity.SLACK;
992 break;
993 }
994 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server name: " + name);
995 }
996 }
997 }
998 } else if (element.getName().equals("feature")) {
999 info.features.add(element.getAttribute("var"));
1000 }
1001 }
1002 disco.put(jid, info);
1003 advancedStreamFeaturesLoaded = disco.containsKey(account.getServer())
1004 && disco.containsKey(account.getJid().toBareJid());
1005 }
1006 if (advancedStreamFeaturesLoaded && (jid.equals(account.getServer()) || jid.equals(account.getJid().toBareJid()))) {
1007 enableAdvancedStreamFeatures();
1008 }
1009 } else {
1010 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not query disco info for " + jid.toString());
1011 }
1012 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1013 mPendingServiceDiscoveries--;
1014 if (mPendingServiceDiscoveries <= 0) {
1015 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": done with service discovery");
1016 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": online with resource " + account.getResource());
1017 changeStatus(Account.State.ONLINE);
1018 if (bindListener != null) {
1019 bindListener.onBind(account);
1020 }
1021 }
1022 }
1023 }
1024 });
1025 synchronized (this.mPendingServiceDiscoveriesIds) {
1026 this.mPendingServiceDiscoveriesIds.add(id);
1027 }
1028 }
1029
1030 private void enableAdvancedStreamFeatures() {
1031 if (getFeatures().carbons() && !features.carbonsEnabled) {
1032 sendEnableCarbons();
1033 }
1034 if (getFeatures().blocking() && !features.blockListRequested) {
1035 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": Requesting block list");
1036 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1037 }
1038 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1039 listener.onAdvancedStreamFeaturesAvailable(account);
1040 }
1041 }
1042
1043 private void sendServiceDiscoveryItems(final Jid server) {
1044 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1045 iq.setTo(server.toDomainJid());
1046 iq.query("http://jabber.org/protocol/disco#items");
1047 this.sendIqPacket(iq, new OnIqPacketReceived() {
1048
1049 @Override
1050 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1051 if (packet.getType() == IqPacket.TYPE.RESULT) {
1052 final List<Element> elements = packet.query().getChildren();
1053 for (final Element element : elements) {
1054 if (element.getName().equals("item")) {
1055 final Jid jid = element.getAttributeAsJid("jid");
1056 if (jid != null && !jid.equals(account.getServer())) {
1057 sendServiceDiscoveryInfo(jid);
1058 }
1059 }
1060 }
1061 } else {
1062 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not query disco items of " + server);
1063 }
1064 }
1065 });
1066 }
1067
1068 private void sendEnableCarbons() {
1069 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1070 iq.addChild("enable", "urn:xmpp:carbons:2");
1071 this.sendIqPacket(iq, new OnIqPacketReceived() {
1072
1073 @Override
1074 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1075 if (!packet.hasChild("error")) {
1076 Log.d(Config.LOGTAG, account.getJid().toBareJid()
1077 + ": successfully enabled carbons");
1078 features.carbonsEnabled = true;
1079 } else {
1080 Log.d(Config.LOGTAG, account.getJid().toBareJid()
1081 + ": error enableing carbons " + packet.toString());
1082 }
1083 }
1084 });
1085 }
1086
1087 private void processStreamError(final Tag currentTag)
1088 throws XmlPullParserException, IOException {
1089 final Element streamError = tagReader.readElement(currentTag);
1090 if (streamError != null && streamError.hasChild("conflict")) {
1091 final String resource = account.getResource().split("\\.")[0];
1092 account.setResource(resource + "." + nextRandomId());
1093 Log.d(Config.LOGTAG,
1094 account.getJid().toBareJid() + ": switching resource due to conflict ("
1095 + account.getResource() + ")");
1096 } else if (streamError != null) {
1097 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": stream error "+streamError.toString());
1098 }
1099 }
1100
1101 private void sendStartStream() throws IOException {
1102 final Tag stream = Tag.start("stream:stream");
1103 stream.setAttribute("to", account.getServer().toString());
1104 stream.setAttribute("version", "1.0");
1105 stream.setAttribute("xml:lang", "en");
1106 stream.setAttribute("xmlns", "jabber:client");
1107 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1108 tagWriter.writeTag(stream);
1109 }
1110
1111 private String nextRandomId() {
1112 return new BigInteger(50, mXmppConnectionService.getRNG()).toString(32);
1113 }
1114
1115 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1116 packet.setFrom(account.getJid());
1117 return this.sendUnmodifiedIqPacket(packet, callback);
1118 }
1119
1120 private synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1121 if (packet.getId() == null) {
1122 final String id = nextRandomId();
1123 packet.setAttribute("id", id);
1124 }
1125 if (callback != null) {
1126 synchronized (this.packetCallbacks) {
1127 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1128 }
1129 }
1130 this.sendPacket(packet);
1131 return packet.getId();
1132 }
1133
1134 public void sendMessagePacket(final MessagePacket packet) {
1135 this.sendPacket(packet);
1136 }
1137
1138 public void sendPresencePacket(final PresencePacket packet) {
1139 this.sendPacket(packet);
1140 }
1141
1142 private synchronized void sendPacket(final AbstractStanza packet) {
1143 if (stanzasSent == Integer.MAX_VALUE) {
1144 resetStreamId();
1145 disconnect(true);
1146 return;
1147 }
1148 tagWriter.writeStanzaAsync(packet);
1149 if (packet instanceof AbstractAcknowledgeableStanza) {
1150 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1151 ++stanzasSent;
1152 this.mStanzaQueue.put(stanzasSent, stanza);
1153 if (stanza instanceof MessagePacket && stanza.getId() != null && getFeatures().sm()) {
1154 if (Config.EXTENDED_SM_LOGGING) {
1155 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1156 }
1157 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1158 }
1159 }
1160 }
1161
1162 public void sendPing() {
1163 if (!r()) {
1164 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1165 iq.setFrom(account.getJid());
1166 iq.addChild("ping", "urn:xmpp:ping");
1167 this.sendIqPacket(iq, null);
1168 }
1169 this.lastPingSent = SystemClock.elapsedRealtime();
1170 }
1171
1172 public void setOnMessagePacketReceivedListener(
1173 final OnMessagePacketReceived listener) {
1174 this.messageListener = listener;
1175 }
1176
1177 public void setOnUnregisteredIqPacketReceivedListener(
1178 final OnIqPacketReceived listener) {
1179 this.unregisteredIqListener = listener;
1180 }
1181
1182 public void setOnPresencePacketReceivedListener(
1183 final OnPresencePacketReceived listener) {
1184 this.presenceListener = listener;
1185 }
1186
1187 public void setOnJinglePacketReceivedListener(
1188 final OnJinglePacketReceived listener) {
1189 this.jingleListener = listener;
1190 }
1191
1192 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1193 this.statusListener = listener;
1194 }
1195
1196 public void setOnBindListener(final OnBindListener listener) {
1197 this.bindListener = listener;
1198 }
1199
1200 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1201 this.acknowledgedListener = listener;
1202 }
1203
1204 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1205 if (!this.advancedStreamFeaturesLoadedListeners.contains(listener)) {
1206 this.advancedStreamFeaturesLoadedListeners.add(listener);
1207 }
1208 }
1209
1210 public void disconnect(final boolean force) {
1211 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": disconnecting force="+Boolean.valueOf(force));
1212 if (force) {
1213 try {
1214 socket.close();
1215 } catch(Exception e) {
1216 Log.d(Config.LOGTAG,account.getJid().toBareJid().toString()+": exception during force close ("+e.getMessage()+")");
1217 }
1218 return;
1219 } else {
1220 resetStreamId();
1221 if (tagWriter.isActive()) {
1222 tagWriter.finish();
1223 try {
1224 int i = 0;
1225 boolean warned = false;
1226 while (!tagWriter.finished() && socket.isConnected() && i <= 10) {
1227 if (!warned) {
1228 Log.d(Config.LOGTAG, account.getJid().toBareJid()+": waiting for tag writer to finish");
1229 warned = true;
1230 }
1231 Thread.sleep(200);
1232 i++;
1233 }
1234 if (warned) {
1235 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": tag writer has finished");
1236 }
1237 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": closing stream");
1238 tagWriter.writeTag(Tag.end("stream:stream"));
1239 } catch (final IOException e) {
1240 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": io exception during disconnect ("+e.getMessage()+")");
1241 } catch (final InterruptedException e) {
1242 Log.d(Config.LOGTAG, "interrupted");
1243 }
1244 }
1245 }
1246 }
1247
1248 public void resetStreamId() {
1249 this.streamId = null;
1250 }
1251
1252 public List<Jid> findDiscoItemsByFeature(final String feature) {
1253 synchronized (this.disco) {
1254 final List<Jid> items = new ArrayList<>();
1255 for (final Entry<Jid, Info> cursor : this.disco.entrySet()) {
1256 if (cursor.getValue().features.contains(feature)) {
1257 items.add(cursor.getKey());
1258 }
1259 }
1260 return items;
1261 }
1262 }
1263
1264 public Jid findDiscoItemByFeature(final String feature) {
1265 final List<Jid> items = findDiscoItemsByFeature(feature);
1266 if (items.size() >= 1) {
1267 return items.get(0);
1268 }
1269 return null;
1270 }
1271
1272 public boolean r() {
1273 if (getFeatures().sm()) {
1274 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1275 return true;
1276 } else {
1277 return false;
1278 }
1279 }
1280
1281 public String getMucServer() {
1282 synchronized (this.disco) {
1283 for (final Entry<Jid, Info> cursor : disco.entrySet()) {
1284 final Info value = cursor.getValue();
1285 if (value.features.contains("http://jabber.org/protocol/muc")
1286 && !value.features.contains("jabber:iq:gateway")
1287 && !value.identities.contains(new Pair<>("conference", "irc"))) {
1288 return cursor.getKey().toString();
1289 }
1290 }
1291 }
1292 return null;
1293 }
1294
1295 public int getTimeToNextAttempt() {
1296 final int interval = (int) (25 * Math.pow(1.5, attempt));
1297 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1298 return interval - secondsSinceLast;
1299 }
1300
1301 public int getAttempt() {
1302 return this.attempt;
1303 }
1304
1305 public Features getFeatures() {
1306 return this.features;
1307 }
1308
1309 public long getLastSessionEstablished() {
1310 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1311 return System.currentTimeMillis() - diff;
1312 }
1313
1314 public long getLastConnect() {
1315 return this.lastConnect;
1316 }
1317
1318 public long getLastPingSent() {
1319 return this.lastPingSent;
1320 }
1321
1322 public long getLastDiscoStarted() {
1323 return this.lastDiscoStarted;
1324 }
1325 public long getLastPacketReceived() {
1326 return this.lastPacketReceived;
1327 }
1328
1329 public void sendActive() {
1330 this.sendPacket(new ActivePacket());
1331 }
1332
1333 public void sendInactive() {
1334 this.sendPacket(new InactivePacket());
1335 }
1336
1337 public void resetAttemptCount() {
1338 this.attempt = 0;
1339 this.lastConnect = 0;
1340 }
1341
1342 public void setInteractive(boolean interactive) {
1343 this.mInteractive = interactive;
1344 }
1345
1346 public Identity getServerIdentity() {
1347 return mServerIdentity;
1348 }
1349
1350 private class Info {
1351 public final ArrayList<String> features = new ArrayList<>();
1352 public final ArrayList<Pair<String,String>> identities = new ArrayList<>();
1353 }
1354
1355 private class UnauthorizedException extends IOException {
1356
1357 }
1358
1359 private class SecurityException extends IOException {
1360
1361 }
1362
1363 private class IncompatibleServerException extends IOException {
1364
1365 }
1366
1367 public enum Identity {
1368 FACEBOOK,
1369 SLACK,
1370 EJABBERD,
1371 PROSODY,
1372 UNKNOWN
1373 }
1374
1375 public class Features {
1376 XmppConnection connection;
1377 private boolean carbonsEnabled = false;
1378 private boolean encryptionEnabled = false;
1379 private boolean blockListRequested = false;
1380
1381 public Features(final XmppConnection connection) {
1382 this.connection = connection;
1383 }
1384
1385 private boolean hasDiscoFeature(final Jid server, final String feature) {
1386 synchronized (XmppConnection.this.disco) {
1387 return connection.disco.containsKey(server) &&
1388 connection.disco.get(server).features.contains(feature);
1389 }
1390 }
1391
1392 public boolean carbons() {
1393 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
1394 }
1395
1396 public boolean blocking() {
1397 return hasDiscoFeature(account.getServer(), Xmlns.BLOCKING);
1398 }
1399
1400 public boolean register() {
1401 return hasDiscoFeature(account.getServer(), Xmlns.REGISTER);
1402 }
1403
1404 public boolean sm() {
1405 return streamId != null
1406 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1407 }
1408
1409 public boolean csi() {
1410 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1411 }
1412
1413 public boolean pep() {
1414 synchronized (XmppConnection.this.disco) {
1415 final Pair<String, String> needle = new Pair<>("pubsub", "pep");
1416 Info info = disco.get(account.getServer());
1417 if (info != null && info.identities.contains(needle)) {
1418 return true;
1419 } else {
1420 info = disco.get(account.getJid().toBareJid());
1421 return info != null && info.identities.contains(needle);
1422 }
1423 }
1424 }
1425
1426 public boolean mam() {
1427 if (hasDiscoFeature(account.getJid().toBareJid(), "urn:xmpp:mam:0")) {
1428 return true;
1429 } else {
1430 return hasDiscoFeature(account.getServer(), "urn:xmpp:mam:0");
1431 }
1432 }
1433
1434 public boolean advancedStreamFeaturesLoaded() {
1435 synchronized (XmppConnection.this.disco) {
1436 return disco.containsKey(account.getServer());
1437 }
1438 }
1439
1440 public boolean rosterVersioning() {
1441 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1442 }
1443
1444 public void setBlockListRequested(boolean value) {
1445 this.blockListRequested = value;
1446 }
1447
1448 public boolean httpUpload() {
1449 return !Config.DISABLE_HTTP_UPLOAD && findDiscoItemsByFeature(Xmlns.HTTP_UPLOAD).size() > 0;
1450 }
1451 }
1452
1453 private IqGenerator getIqGenerator() {
1454 return mXmppConnectionService.getIqGenerator();
1455 }
1456}