1package eu.siacs.conversations.xmpp;
2
3import android.content.Context;
4import android.graphics.Bitmap;
5import android.graphics.BitmapFactory;
6import android.os.SystemClock;
7import android.security.KeyChain;
8import android.support.annotation.NonNull;
9import android.util.Base64;
10import android.util.Log;
11import android.util.Pair;
12import android.util.SparseArray;
13
14import org.xmlpull.v1.XmlPullParserException;
15
16import java.io.ByteArrayInputStream;
17import java.io.IOException;
18import java.io.InputStream;
19import java.net.ConnectException;
20import java.net.IDN;
21import java.net.InetAddress;
22import java.net.InetSocketAddress;
23import java.net.MalformedURLException;
24import java.net.Socket;
25import java.net.URL;
26import java.net.UnknownHostException;
27import java.security.KeyManagementException;
28import java.security.NoSuchAlgorithmException;
29import java.security.Principal;
30import java.security.PrivateKey;
31import java.security.cert.X509Certificate;
32import java.util.ArrayList;
33import java.util.Arrays;
34import java.util.Collections;
35import java.util.HashMap;
36import java.util.HashSet;
37import java.util.Hashtable;
38import java.util.Iterator;
39import java.util.List;
40import java.util.Map.Entry;
41import java.util.Set;
42import java.util.concurrent.CountDownLatch;
43import java.util.concurrent.TimeUnit;
44import java.util.concurrent.atomic.AtomicBoolean;
45import java.util.concurrent.atomic.AtomicInteger;
46import java.util.regex.Matcher;
47
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 eu.siacs.conversations.Config;
56import eu.siacs.conversations.R;
57import eu.siacs.conversations.crypto.DomainHostnameVerifier;
58import eu.siacs.conversations.crypto.XmppDomainVerifier;
59import eu.siacs.conversations.crypto.axolotl.AxolotlService;
60import eu.siacs.conversations.crypto.sasl.Anonymous;
61import eu.siacs.conversations.crypto.sasl.DigestMd5;
62import eu.siacs.conversations.crypto.sasl.External;
63import eu.siacs.conversations.crypto.sasl.Plain;
64import eu.siacs.conversations.crypto.sasl.SaslMechanism;
65import eu.siacs.conversations.crypto.sasl.ScramSha1;
66import eu.siacs.conversations.crypto.sasl.ScramSha256;
67import eu.siacs.conversations.crypto.sasl.ScramSha512;
68import eu.siacs.conversations.entities.Account;
69import eu.siacs.conversations.entities.Message;
70import eu.siacs.conversations.entities.ServiceDiscoveryResult;
71import eu.siacs.conversations.generator.IqGenerator;
72import eu.siacs.conversations.persistance.FileBackend;
73import eu.siacs.conversations.services.MemorizingTrustManager;
74import eu.siacs.conversations.services.MessageArchiveService;
75import eu.siacs.conversations.services.NotificationService;
76import eu.siacs.conversations.services.XmppConnectionService;
77import eu.siacs.conversations.utils.CryptoHelper;
78import eu.siacs.conversations.utils.Patterns;
79import eu.siacs.conversations.utils.Resolver;
80import eu.siacs.conversations.utils.SSLSocketHelper;
81import eu.siacs.conversations.utils.SocksSocketFactory;
82import eu.siacs.conversations.utils.XmlHelper;
83import eu.siacs.conversations.xml.Element;
84import eu.siacs.conversations.xml.LocalizedContent;
85import eu.siacs.conversations.xml.Namespace;
86import eu.siacs.conversations.xml.Tag;
87import eu.siacs.conversations.xml.TagWriter;
88import eu.siacs.conversations.xml.XmlReader;
89import eu.siacs.conversations.xmpp.forms.Data;
90import eu.siacs.conversations.xmpp.forms.Field;
91import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
92import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
93import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
94import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
95import eu.siacs.conversations.xmpp.stanzas.IqPacket;
96import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
97import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
98import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
99import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
100import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
101import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
102import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
103import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
104
105public class XmppConnection implements Runnable {
106
107 private static final int PACKET_IQ = 0;
108 private static final int PACKET_MESSAGE = 1;
109 private static final int PACKET_PRESENCE = 2;
110 public final OnIqPacketReceived registrationResponseListener = new OnIqPacketReceived() {
111 @Override
112 public void onIqPacketReceived(Account account, IqPacket packet) {
113 if (packet.getType() == IqPacket.TYPE.RESULT) {
114 account.setOption(Account.OPTION_REGISTER, false);
115 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": successfully registered new account on server");
116 throw new StateChangingError(Account.State.REGISTRATION_SUCCESSFUL);
117 } else {
118 final List<String> PASSWORD_TOO_WEAK_MSGS = Arrays.asList(
119 "The password is too weak",
120 "Please use a longer password.");
121 Element error = packet.findChild("error");
122 Account.State state = Account.State.REGISTRATION_FAILED;
123 if (error != null) {
124 if (error.hasChild("conflict")) {
125 state = Account.State.REGISTRATION_CONFLICT;
126 } else if (error.hasChild("resource-constraint")
127 && "wait".equals(error.getAttribute("type"))) {
128 state = Account.State.REGISTRATION_PLEASE_WAIT;
129 } else if (error.hasChild("not-acceptable")
130 && PASSWORD_TOO_WEAK_MSGS.contains(error.findChildContent("text"))) {
131 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
132 }
133 }
134 throw new StateChangingError(state);
135 }
136 }
137 };
138 protected final Account account;
139 private final Features features = new Features(this);
140 private final HashMap<Jid, ServiceDiscoveryResult> disco = new HashMap<>();
141 private final HashMap<String, Jid> commands = new HashMap<>();
142 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
143 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
144 private final Set<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new HashSet<>();
145 private final XmppConnectionService mXmppConnectionService;
146 private Socket socket;
147 private XmlReader tagReader;
148 private TagWriter tagWriter = new TagWriter();
149 private boolean shouldAuthenticate = true;
150 private boolean inSmacksSession = false;
151 private boolean isBound = false;
152 private Element streamFeatures;
153 private String streamId = null;
154 private int smVersion = 3;
155 private int stanzasReceived = 0;
156 private int stanzasSent = 0;
157 private long lastPacketReceived = 0;
158 private long lastPingSent = 0;
159 private long lastConnect = 0;
160 private long lastSessionStarted = 0;
161 private long lastDiscoStarted = 0;
162 private boolean isMamPreferenceAlways = false;
163 private AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
164 private AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
165 private AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
166 private AtomicInteger mSmCatchupMessageCounter = new AtomicInteger(0);
167 private boolean mInteractive = false;
168 private int attempt = 0;
169 private OnPresencePacketReceived presenceListener = null;
170 private OnJinglePacketReceived jingleListener = null;
171 private OnIqPacketReceived unregisteredIqListener = null;
172 private OnMessagePacketReceived messageListener = null;
173 private OnStatusChanged statusListener = null;
174 private OnBindListener bindListener = null;
175 private OnMessageAcknowledged acknowledgedListener = null;
176 private SaslMechanism saslMechanism;
177 private URL redirectionUrl = null;
178 private String verifiedHostname = null;
179 private volatile Thread mThread;
180 private CountDownLatch mStreamCountDownLatch;
181
182
183 public XmppConnection(final Account account, final XmppConnectionService service) {
184 this.account = account;
185 this.mXmppConnectionService = service;
186 }
187
188 private static void fixResource(Context context, Account account) {
189 String resource = account.getResource();
190 int fixedPartLength = context.getString(R.string.app_name).length() + 1; //include the trailing dot
191 int randomPartLength = 4; // 3 bytes
192 if (resource != null && resource.length() > fixedPartLength + randomPartLength) {
193 if (validBase64(resource.substring(fixedPartLength, fixedPartLength + randomPartLength))) {
194 account.setResource(resource.substring(0, fixedPartLength + randomPartLength));
195 }
196 }
197 }
198
199 private static boolean validBase64(String input) {
200 try {
201 return Base64.decode(input, Base64.URL_SAFE).length == 3;
202 } catch (Throwable throwable) {
203 return false;
204 }
205 }
206
207 private void changeStatus(final Account.State nextStatus) {
208 synchronized (this) {
209 if (Thread.currentThread().isInterrupted()) {
210 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not changing status to " + nextStatus + " because thread was interrupted");
211 return;
212 }
213 if (account.getStatus() != nextStatus) {
214 if ((nextStatus == Account.State.OFFLINE)
215 && (account.getStatus() != Account.State.CONNECTING)
216 && (account.getStatus() != Account.State.ONLINE)
217 && (account.getStatus() != Account.State.DISABLED)) {
218 return;
219 }
220 if (nextStatus == Account.State.ONLINE) {
221 this.attempt = 0;
222 }
223 account.setStatus(nextStatus);
224 } else {
225 return;
226 }
227 }
228 if (statusListener != null) {
229 statusListener.onStatusChanged(account);
230 }
231 }
232
233 public Jid getJidForCommand(final String node) {
234 synchronized (this.commands) {
235 return this.commands.get(node);
236 }
237 }
238
239 public void prepareNewConnection() {
240 this.lastConnect = SystemClock.elapsedRealtime();
241 this.lastPingSent = SystemClock.elapsedRealtime();
242 this.lastDiscoStarted = Long.MAX_VALUE;
243 this.mWaitingForSmCatchup.set(false);
244 this.changeStatus(Account.State.CONNECTING);
245 }
246
247 public boolean isWaitingForSmCatchup() {
248 return mWaitingForSmCatchup.get();
249 }
250
251 public void incrementSmCatchupMessageCounter() {
252 this.mSmCatchupMessageCounter.incrementAndGet();
253 }
254
255 protected void connect() {
256 if (mXmppConnectionService.areMessagesInitialized()) {
257 mXmppConnectionService.resetSendingToWaiting(account);
258 }
259 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
260 features.encryptionEnabled = false;
261 inSmacksSession = false;
262 isBound = false;
263 this.attempt++;
264 this.verifiedHostname = null; //will be set if user entered hostname is being used or hostname was verified with dnssec
265 try {
266 Socket localSocket;
267 shouldAuthenticate = !account.isOptionSet(Account.OPTION_REGISTER);
268 this.changeStatus(Account.State.CONNECTING);
269 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
270 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
271 if (useTor) {
272 String destination;
273 if (account.getHostname().isEmpty() || account.isOnion()) {
274 destination = account.getServer();
275 } else {
276 destination = account.getHostname();
277 this.verifiedHostname = destination;
278 }
279
280 final int port = account.getPort();
281 final boolean directTls = Resolver.useDirectTls(port);
282
283 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": connect to " + destination + " via Tor. directTls=" + directTls);
284 localSocket = SocksSocketFactory.createSocketOverTor(destination, port);
285
286 if (directTls) {
287 localSocket = upgradeSocketToTls(localSocket);
288 features.encryptionEnabled = true;
289 }
290
291 try {
292 startXmpp(localSocket);
293 } catch (InterruptedException e) {
294 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
295 return;
296 } catch (Exception e) {
297 throw new IOException(e.getMessage());
298 }
299 } else {
300 final String domain = account.getServer();
301 final List<Resolver.Result> results;
302 final boolean hardcoded = extended && !account.getHostname().isEmpty();
303 if (hardcoded) {
304 results = Resolver.fromHardCoded(account.getHostname(), account.getPort());
305 } else {
306 results = Resolver.resolve(domain);
307 }
308 if (Thread.currentThread().isInterrupted()) {
309 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
310 return;
311 }
312 if (results.size() == 0) {
313 Log.e(Config.LOGTAG, account.getJid().asBareJid() + ": Resolver results were empty");
314 return;
315 }
316 final Resolver.Result storedBackupResult;
317 if (hardcoded) {
318 storedBackupResult = null;
319 } else {
320 storedBackupResult = mXmppConnectionService.databaseBackend.findResolverResult(domain);
321 if (storedBackupResult != null && !results.contains(storedBackupResult)) {
322 results.add(storedBackupResult);
323 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": loaded backup resolver result from db: " + storedBackupResult);
324 }
325 }
326 for (Iterator<Resolver.Result> iterator = results.iterator(); iterator.hasNext(); ) {
327 final Resolver.Result result = iterator.next();
328 if (Thread.currentThread().isInterrupted()) {
329 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
330 return;
331 }
332 try {
333 // if tls is true, encryption is implied and must not be started
334 features.encryptionEnabled = result.isDirectTls();
335 verifiedHostname = result.isAuthenticated() ? result.getHostname().toString() : null;
336 Log.d(Config.LOGTAG, "verified hostname " + verifiedHostname);
337 final InetSocketAddress addr;
338 if (result.getIp() != null) {
339 addr = new InetSocketAddress(result.getIp(), result.getPort());
340 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
341 + ": using values from resolver " + (result.getHostname() == null ? "" : result.getHostname().toString()
342 + "/") + result.getIp().getHostAddress() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
343 } else {
344 addr = new InetSocketAddress(IDN.toASCII(result.getHostname().toString()), result.getPort());
345 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
346 + ": using values from resolver "
347 + result.getHostname().toString() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
348 }
349
350 localSocket = new Socket();
351 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
352
353 if (features.encryptionEnabled) {
354 localSocket = upgradeSocketToTls(localSocket);
355 }
356
357 localSocket.setSoTimeout(Config.SOCKET_TIMEOUT * 1000);
358 if (startXmpp(localSocket)) {
359 localSocket.setSoTimeout(0); //reset to 0; once the connection is established we don’t want this
360 if (!hardcoded && !result.equals(storedBackupResult)) {
361 mXmppConnectionService.databaseBackend.saveResolverResult(domain, result);
362 }
363 break; // successfully connected to server that speaks xmpp
364 } else {
365 FileBackend.close(localSocket);
366 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
367 }
368 } catch (final StateChangingException e) {
369 if (!iterator.hasNext()) {
370 throw e;
371 }
372 } catch (InterruptedException e) {
373 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
374 return;
375 } catch (final Throwable e) {
376 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage() + "(" + e.getClass().getName() + ")");
377 if (!iterator.hasNext()) {
378 throw new UnknownHostException();
379 }
380 }
381 }
382 }
383 processStream();
384 } catch (final SecurityException e) {
385 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
386 } catch (final StateChangingException e) {
387 this.changeStatus(e.state);
388 } catch (final UnknownHostException | ConnectException e) {
389 this.changeStatus(Account.State.SERVER_NOT_FOUND);
390 } catch (final SocksSocketFactory.HostNotFoundException e) {
391 this.changeStatus(Account.State.SERVER_NOT_FOUND);
392 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
393 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
394 } catch (final IOException | XmlPullParserException e) {
395 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
396 this.changeStatus(Account.State.OFFLINE);
397 this.attempt = Math.max(0, this.attempt - 1);
398 } finally {
399 if (!Thread.currentThread().isInterrupted()) {
400 forceCloseSocket();
401 } else {
402 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not force closing socket because thread was interrupted");
403 }
404 }
405 }
406
407 /**
408 * Starts xmpp protocol, call after connecting to socket
409 *
410 * @return true if server returns with valid xmpp, false otherwise
411 */
412 private boolean startXmpp(Socket socket) throws Exception {
413 if (Thread.currentThread().isInterrupted()) {
414 throw new InterruptedException();
415 }
416 this.socket = socket;
417 tagReader = new XmlReader();
418 if (tagWriter != null) {
419 tagWriter.forceClose();
420 }
421 tagWriter = new TagWriter();
422 tagWriter.setOutputStream(socket.getOutputStream());
423 tagReader.setInputStream(socket.getInputStream());
424 tagWriter.beginDocument();
425 sendStartStream();
426 final Tag tag = tagReader.readTag();
427 if (Thread.currentThread().isInterrupted()) {
428 throw new InterruptedException();
429 }
430 if (socket instanceof SSLSocket) {
431 SSLSocketHelper.log(account, (SSLSocket) socket);
432 }
433 return tag != null && tag.isStart("stream");
434 }
435
436 private TlsFactoryVerifier getTlsFactoryVerifier() throws NoSuchAlgorithmException, KeyManagementException, IOException {
437 final SSLContext sc = SSLSocketHelper.getSSLContext();
438 final MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
439 final KeyManager[] keyManager;
440 if (account.getPrivateKeyAlias() != null) {
441 keyManager = new KeyManager[]{new MyKeyManager()};
442 } else {
443 keyManager = null;
444 }
445 final String domain = account.getServer();
446 sc.init(keyManager, new X509TrustManager[]{mInteractive ? trustManager.getInteractive(domain) : trustManager.getNonInteractive(domain)}, mXmppConnectionService.getRNG());
447 final SSLSocketFactory factory = sc.getSocketFactory();
448 final DomainHostnameVerifier verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier(), mInteractive);
449 return new TlsFactoryVerifier(factory, verifier);
450 }
451
452 @Override
453 public void run() {
454 synchronized (this) {
455 this.mThread = Thread.currentThread();
456 if (this.mThread.isInterrupted()) {
457 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": aborting connect because thread was interrupted");
458 return;
459 }
460 forceCloseSocket();
461 }
462 connect();
463 }
464
465 private void processStream() throws XmlPullParserException, IOException {
466 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
467 this.mStreamCountDownLatch = streamCountDownLatch;
468 Tag nextTag = tagReader.readTag();
469 while (nextTag != null && !nextTag.isEnd("stream")) {
470 if (nextTag.isStart("error")) {
471 processStreamError(nextTag);
472 } else if (nextTag.isStart("features")) {
473 processStreamFeatures(nextTag);
474 } else if (nextTag.isStart("proceed")) {
475 switchOverToTls();
476 } else if (nextTag.isStart("success")) {
477 final String challenge = tagReader.readElement(nextTag).getContent();
478 try {
479 saslMechanism.getResponse(challenge);
480 } catch (final SaslMechanism.AuthenticationException e) {
481 Log.e(Config.LOGTAG, String.valueOf(e));
482 throw new StateChangingException(Account.State.UNAUTHORIZED);
483 }
484 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": logged in");
485 account.setKey(Account.PINNED_MECHANISM_KEY,
486 String.valueOf(saslMechanism.getPriority()));
487 tagReader.reset();
488 sendStartStream();
489 final Tag tag = tagReader.readTag();
490 if (tag != null && tag.isStart("stream")) {
491 processStream();
492 } else {
493 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
494 }
495 break;
496 } else if (nextTag.isStart("failure")) {
497 final Element failure = tagReader.readElement(nextTag);
498 if (Namespace.SASL.equals(failure.getNamespace())) {
499 final String text = failure.findChildContent("text");
500 if (failure.hasChild("account-disabled") && text != null) {
501 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
502 if (matcher.find()) {
503 try {
504 URL url = new URL(text.substring(matcher.start(), matcher.end()));
505 if (url.getProtocol().equals("https")) {
506 this.redirectionUrl = url;
507 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
508 }
509 } catch (MalformedURLException e) {
510 throw new StateChangingException(Account.State.UNAUTHORIZED);
511 }
512 }
513 }
514 throw new StateChangingException(Account.State.UNAUTHORIZED);
515 } else if (Namespace.TLS.equals(failure.getNamespace())) {
516 throw new StateChangingException(Account.State.TLS_ERROR);
517 } else {
518 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
519 }
520 } else if (nextTag.isStart("challenge")) {
521 final String challenge = tagReader.readElement(nextTag).getContent();
522 final Element response = new Element("response", Namespace.SASL);
523 try {
524 response.setContent(saslMechanism.getResponse(challenge));
525 } catch (final SaslMechanism.AuthenticationException e) {
526 // TODO: Send auth abort tag.
527 Log.e(Config.LOGTAG, e.toString());
528 }
529 tagWriter.writeElement(response);
530 } else if (nextTag.isStart("enabled")) {
531 final Element enabled = tagReader.readElement(nextTag);
532 if ("true".equals(enabled.getAttribute("resume"))) {
533 this.streamId = enabled.getAttribute("id");
534 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
535 + ": stream management(" + smVersion
536 + ") enabled (resumable)");
537 } else {
538 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
539 + ": stream management(" + smVersion + ") enabled");
540 }
541 this.stanzasReceived = 0;
542 this.inSmacksSession = true;
543 final RequestPacket r = new RequestPacket(smVersion);
544 tagWriter.writeStanzaAsync(r);
545 } else if (nextTag.isStart("resumed")) {
546 this.inSmacksSession = true;
547 this.isBound = true;
548 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
549 lastPacketReceived = SystemClock.elapsedRealtime();
550 final Element resumed = tagReader.readElement(nextTag);
551 final String h = resumed.getAttribute("h");
552 try {
553 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
554 final boolean acknowledgedMessages;
555 synchronized (this.mStanzaQueue) {
556 final int serverCount = Integer.parseInt(h);
557 if (serverCount < stanzasSent) {
558 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
559 + ": session resumed with lost packages");
560 stanzasSent = serverCount;
561 } else {
562 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": session resumed");
563 }
564 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
565 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
566 failedStanzas.add(mStanzaQueue.valueAt(i));
567 }
568 mStanzaQueue.clear();
569 }
570 if (acknowledgedMessages) {
571 mXmppConnectionService.updateConversationUi();
572 }
573 Log.d(Config.LOGTAG, "resending " + failedStanzas.size() + " stanzas");
574 for (AbstractAcknowledgeableStanza packet : failedStanzas) {
575 if (packet instanceof MessagePacket) {
576 MessagePacket message = (MessagePacket) packet;
577 mXmppConnectionService.markMessage(account,
578 message.getTo().asBareJid(),
579 message.getId(),
580 Message.STATUS_UNSEND);
581 }
582 sendPacket(packet);
583 }
584 } catch (final NumberFormatException ignored) {
585 }
586 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
587 changeStatus(Account.State.ONLINE);
588 } else if (nextTag.isStart("r")) {
589 tagReader.readElement(nextTag);
590 if (Config.EXTENDED_SM_LOGGING) {
591 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
592 }
593 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
594 tagWriter.writeStanzaAsync(ack);
595 } else if (nextTag.isStart("a")) {
596 boolean accountUiNeedsRefresh = false;
597 synchronized (NotificationService.CATCHUP_LOCK) {
598 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
599 final int messageCount = mSmCatchupMessageCounter.get();
600 final int pendingIQs = packetCallbacks.size();
601 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": SM catchup complete (messages=" + messageCount + ", pending IQs=" + pendingIQs + ")");
602 accountUiNeedsRefresh = true;
603 if (messageCount > 0) {
604 mXmppConnectionService.getNotificationService().finishBacklog(true, account);
605 }
606 }
607 }
608 if (accountUiNeedsRefresh) {
609 mXmppConnectionService.updateAccountUi();
610 }
611 final Element ack = tagReader.readElement(nextTag);
612 lastPacketReceived = SystemClock.elapsedRealtime();
613 try {
614 final boolean acknowledgedMessages;
615 synchronized (this.mStanzaQueue) {
616 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
617 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence);
618 }
619 if (acknowledgedMessages) {
620 mXmppConnectionService.updateConversationUi();
621 }
622 } catch (NumberFormatException | NullPointerException e) {
623 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server send ack without sequence number");
624 }
625 } else if (nextTag.isStart("failed")) {
626 Element failed = tagReader.readElement(nextTag);
627 try {
628 final int serverCount = Integer.parseInt(failed.getAttribute("h"));
629 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed but server acknowledged stanza #" + serverCount);
630 final boolean acknowledgedMessages;
631 synchronized (this.mStanzaQueue) {
632 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
633 }
634 if (acknowledgedMessages) {
635 mXmppConnectionService.updateConversationUi();
636 }
637 } catch (NumberFormatException | NullPointerException e) {
638 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
639 }
640 resetStreamId();
641 sendBindRequest();
642 } else if (nextTag.isStart("iq")) {
643 processIq(nextTag);
644 } else if (nextTag.isStart("message")) {
645 processMessage(nextTag);
646 } else if (nextTag.isStart("presence")) {
647 processPresence(nextTag);
648 }
649 nextTag = tagReader.readTag();
650 }
651 if (nextTag != null && nextTag.isEnd("stream")) {
652 streamCountDownLatch.countDown();
653 }
654 }
655
656 private boolean acknowledgeStanzaUpTo(int serverCount) {
657 if (serverCount > stanzasSent) {
658 Log.e(Config.LOGTAG, "server acknowledged more stanzas than we sent. serverCount=" + serverCount + ", ourCount=" + stanzasSent);
659 }
660 boolean acknowledgedMessages = false;
661 for (int i = 0; i < mStanzaQueue.size(); ++i) {
662 if (serverCount >= mStanzaQueue.keyAt(i)) {
663 if (Config.EXTENDED_SM_LOGGING) {
664 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
665 }
666 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
667 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
668 MessagePacket packet = (MessagePacket) stanza;
669 acknowledgedMessages |= acknowledgedListener.onMessageAcknowledged(account, packet.getId());
670 }
671 mStanzaQueue.removeAt(i);
672 i--;
673 }
674 }
675 return acknowledgedMessages;
676 }
677
678 private @NonNull
679 Element processPacket(final Tag currentTag, final int packetType) throws IOException {
680 final Element element;
681 switch (packetType) {
682 case PACKET_IQ:
683 element = new IqPacket();
684 break;
685 case PACKET_MESSAGE:
686 element = new MessagePacket();
687 break;
688 case PACKET_PRESENCE:
689 element = new PresencePacket();
690 break;
691 default:
692 throw new AssertionError("Should never encounter invalid type");
693 }
694 element.setAttributes(currentTag.getAttributes());
695 Tag nextTag = tagReader.readTag();
696 if (nextTag == null) {
697 throw new IOException("interrupted mid tag");
698 }
699 while (!nextTag.isEnd(element.getName())) {
700 if (!nextTag.isNo()) {
701 element.addChild(tagReader.readElement(nextTag));
702 }
703 nextTag = tagReader.readTag();
704 if (nextTag == null) {
705 throw new IOException("interrupted mid tag");
706 }
707 }
708 if (stanzasReceived == Integer.MAX_VALUE) {
709 resetStreamId();
710 throw new IOException("time to restart the session. cant handle >2 billion pcks");
711 }
712 if (inSmacksSession) {
713 ++stanzasReceived;
714 } else if (features.sm()) {
715 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not counting stanza(" + element.getClass().getSimpleName() + "). Not in smacks session.");
716 }
717 lastPacketReceived = SystemClock.elapsedRealtime();
718 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
719 Log.d(Config.LOGTAG, "[background stanza] " + element);
720 }
721 if (element instanceof IqPacket
722 && (((IqPacket) element).getType() == IqPacket.TYPE.SET)
723 && element.hasChild("jingle", Namespace.JINGLE)) {
724 return JinglePacket.upgrade((IqPacket) element);
725 } else {
726 return element;
727 }
728 }
729
730 private void processIq(final Tag currentTag) throws IOException {
731 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
732 if (!packet.valid()) {
733 Log.e(Config.LOGTAG, "encountered invalid iq from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
734 return;
735 }
736 if (packet instanceof JinglePacket) {
737 if (this.jingleListener != null) {
738 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
739 }
740 } else {
741 OnIqPacketReceived callback = null;
742 synchronized (this.packetCallbacks) {
743 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
744 if (packetCallbackDuple != null) {
745 // Packets to the server should have responses from the server
746 if (packetCallbackDuple.first.toServer(account)) {
747 if (packet.fromServer(account)) {
748 callback = packetCallbackDuple.second;
749 packetCallbacks.remove(packet.getId());
750 } else {
751 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
752 }
753 } else {
754 if (packet.getFrom() != null && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
755 callback = packetCallbackDuple.second;
756 packetCallbacks.remove(packet.getId());
757 } else {
758 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
759 }
760 }
761 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
762 callback = this.unregisteredIqListener;
763 }
764 }
765 if (callback != null) {
766 try {
767 callback.onIqPacketReceived(account, packet);
768 } catch (StateChangingError error) {
769 throw new StateChangingException(error.state);
770 }
771 }
772 }
773 }
774
775 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
776 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
777 if (!packet.valid()) {
778 Log.e(Config.LOGTAG, "encountered invalid message from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
779 return;
780 }
781 this.messageListener.onMessagePacketReceived(account, packet);
782 }
783
784 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
785 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
786 if (!packet.valid()) {
787 Log.e(Config.LOGTAG, "encountered invalid presence from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
788 return;
789 }
790 this.presenceListener.onPresencePacketReceived(account, packet);
791 }
792
793 private void sendStartTLS() throws IOException {
794 final Tag startTLS = Tag.empty("starttls");
795 startTLS.setAttribute("xmlns", Namespace.TLS);
796 tagWriter.writeTag(startTLS);
797 }
798
799 private void switchOverToTls() throws XmlPullParserException, IOException {
800 tagReader.readTag();
801 final Socket socket = this.socket;
802 final SSLSocket sslSocket = upgradeSocketToTls(socket);
803 tagReader.setInputStream(sslSocket.getInputStream());
804 tagWriter.setOutputStream(sslSocket.getOutputStream());
805 sendStartStream();
806 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
807 features.encryptionEnabled = true;
808 final Tag tag = tagReader.readTag();
809 if (tag != null && tag.isStart("stream")) {
810 SSLSocketHelper.log(account, sslSocket);
811 processStream();
812 } else {
813 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
814 }
815 sslSocket.close();
816 }
817
818 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
819 final TlsFactoryVerifier tlsFactoryVerifier;
820 try {
821 tlsFactoryVerifier = getTlsFactoryVerifier();
822 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
823 throw new StateChangingException(Account.State.TLS_ERROR);
824 }
825 final InetAddress address = socket.getInetAddress();
826 final SSLSocket sslSocket = (SSLSocket) tlsFactoryVerifier.factory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
827 SSLSocketHelper.setSecurity(sslSocket);
828 SSLSocketHelper.setHostname(sslSocket, account.getServer());
829 SSLSocketHelper.setApplicationProtocol(sslSocket, "xmpp-client");
830 if (!tlsFactoryVerifier.verifier.verify(account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
831 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate verification failed");
832 FileBackend.close(sslSocket);
833 throw new StateChangingException(Account.State.TLS_ERROR);
834 }
835 return sslSocket;
836 }
837
838 private void processStreamFeatures(final Tag currentTag) throws XmlPullParserException, IOException {
839 this.streamFeatures = tagReader.readElement(currentTag);
840 final boolean isSecure = features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
841 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
842 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
843 sendStartTLS();
844 } else if (this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
845 if (isSecure) {
846 register();
847 } else {
848 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find STARTTLS for registration process " + XmlHelper.printElementNames(this.streamFeatures));
849 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
850 }
851 } else if (!this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
852 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
853 } else if (this.streamFeatures.hasChild("mechanisms") && shouldAuthenticate && isSecure) {
854 authenticate();
855 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
856 if (Config.EXTENDED_SM_LOGGING) {
857 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resuming after stanza #" + stanzasReceived);
858 }
859 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
860 this.mSmCatchupMessageCounter.set(0);
861 this.mWaitingForSmCatchup.set(true);
862 this.tagWriter.writeStanzaAsync(resume);
863 } else if (needsBinding) {
864 if (this.streamFeatures.hasChild("bind") && isSecure) {
865 sendBindRequest();
866 } else {
867 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find bind feature " + XmlHelper.printElementNames(this.streamFeatures));
868 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
869 }
870 }
871 }
872
873 private void authenticate() throws IOException {
874 final List<String> mechanisms = extractMechanisms(streamFeatures.findChild("mechanisms"));
875 final Element auth = new Element("auth", Namespace.SASL);
876 if (mechanisms.contains(External.MECHANISM) && account.getPrivateKeyAlias() != null) {
877 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
878 } else if (mechanisms.contains(ScramSha512.MECHANISM)) {
879 saslMechanism = new ScramSha512(tagWriter, account, mXmppConnectionService.getRNG());
880 } else if (mechanisms.contains(ScramSha256.MECHANISM)) {
881 saslMechanism = new ScramSha256(tagWriter, account, mXmppConnectionService.getRNG());
882 } else if (mechanisms.contains(ScramSha1.MECHANISM)) {
883 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
884 } else if (mechanisms.contains(Plain.MECHANISM) && !account.getJid().getDomain().toEscapedString().equals("nimbuzz.com")) {
885 saslMechanism = new Plain(tagWriter, account);
886 } else if (mechanisms.contains(DigestMd5.MECHANISM)) {
887 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
888 } else if (mechanisms.contains(Anonymous.MECHANISM)) {
889 saslMechanism = new Anonymous(tagWriter, account, mXmppConnectionService.getRNG());
890 }
891 if (saslMechanism != null) {
892 final int pinnedMechanism = account.getKeyAsInt(Account.PINNED_MECHANISM_KEY, -1);
893 if (pinnedMechanism > saslMechanism.getPriority()) {
894 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
895 " has lower priority (" + saslMechanism.getPriority() +
896 ") than pinned priority (" + pinnedMechanism +
897 "). Possible downgrade attack?");
898 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
899 }
900 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
901 auth.setAttribute("mechanism", saslMechanism.getMechanism());
902 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
903 auth.setContent(saslMechanism.getClientFirstMessage());
904 }
905 tagWriter.writeElement(auth);
906 } else {
907 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find supported SASL mechanism in " + mechanisms);
908 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
909 }
910 }
911
912 private List<String> extractMechanisms(final Element stream) {
913 final ArrayList<String> mechanisms = new ArrayList<>(stream
914 .getChildren().size());
915 for (final Element child : stream.getChildren()) {
916 mechanisms.add(child.getContent());
917 }
918 return mechanisms;
919 }
920
921
922 private void register() {
923 final String preAuth = account.getKey(Account.PRE_AUTH_REGISTRATION_TOKEN);
924 if (preAuth != null && features.invite()) {
925 final IqPacket preAuthRequest = new IqPacket(IqPacket.TYPE.SET);
926 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
927 sendUnmodifiedIqPacket(preAuthRequest, (account, response) -> {
928 if (response.getType() == IqPacket.TYPE.RESULT) {
929 sendRegistryRequest();
930 } else {
931 final Element error = response.getError();
932 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": failed to pre auth. " + error);
933 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
934 }
935 }, true);
936 } else {
937 sendRegistryRequest();
938 }
939 }
940
941 private void sendRegistryRequest() {
942 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
943 register.query(Namespace.REGISTER);
944 register.setTo(account.getDomain());
945 sendUnmodifiedIqPacket(register, (account, packet) -> {
946 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
947 return;
948 }
949 if (packet.getType() == IqPacket.TYPE.ERROR) {
950 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
951 }
952 final Element query = packet.query(Namespace.REGISTER);
953 if (query.hasChild("username") && (query.hasChild("password"))) {
954 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
955 final Element username = new Element("username").setContent(account.getUsername());
956 final Element password = new Element("password").setContent(account.getPassword());
957 register1.query(Namespace.REGISTER).addChild(username);
958 register1.query().addChild(password);
959 register1.setFrom(account.getJid().asBareJid());
960 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
961 } else if (query.hasChild("x", Namespace.DATA)) {
962 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
963 final Element blob = query.findChild("data", "urn:xmpp:bob");
964 final String id = packet.getId();
965 InputStream is;
966 if (blob != null) {
967 try {
968 final String base64Blob = blob.getContent();
969 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
970 is = new ByteArrayInputStream(strBlob);
971 } catch (Exception e) {
972 is = null;
973 }
974 } else {
975 try {
976 Field field = data.getFieldByName("url");
977 URL url = field != null && field.getValue() != null ? new URL(field.getValue()) : null;
978 is = url != null ? url.openStream() : null;
979 } catch (IOException e) {
980 is = null;
981 }
982 }
983
984 if (is != null) {
985 Bitmap captcha = BitmapFactory.decodeStream(is);
986 try {
987 if (mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha)) {
988 return;
989 }
990 } catch (Exception e) {
991 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
992 }
993 }
994 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
995 } else if (query.hasChild("instructions") || query.hasChild("x", Namespace.OOB)) {
996 final String instructions = query.findChildContent("instructions");
997 final Element oob = query.findChild("x", Namespace.OOB);
998 final String url = oob == null ? null : oob.findChildContent("url");
999 if (url != null) {
1000 setAccountCreationFailed(url);
1001 } else if (instructions != null) {
1002 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
1003 if (matcher.find()) {
1004 setAccountCreationFailed(instructions.substring(matcher.start(), matcher.end()));
1005 }
1006 }
1007 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1008 }
1009 }, true);
1010 }
1011
1012 private void setAccountCreationFailed(String url) {
1013 if (url != null) {
1014 try {
1015 this.redirectionUrl = new URL(url);
1016 if (this.redirectionUrl.getProtocol().equals("https")) {
1017 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1018 }
1019 } catch (MalformedURLException e) {
1020 //fall through
1021 }
1022 }
1023 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1024 }
1025
1026 public URL getRedirectionUrl() {
1027 return this.redirectionUrl;
1028 }
1029
1030 public void resetEverything() {
1031 resetAttemptCount(true);
1032 resetStreamId();
1033 clearIqCallbacks();
1034 this.stanzasSent = 0;
1035 mStanzaQueue.clear();
1036 this.redirectionUrl = null;
1037 synchronized (this.disco) {
1038 disco.clear();
1039 }
1040 synchronized (this.commands) {
1041 this.commands.clear();
1042 }
1043 }
1044
1045 private void sendBindRequest() {
1046 try {
1047 mXmppConnectionService.restoredFromDatabaseLatch.await();
1048 } catch (InterruptedException e) {
1049 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while waiting for DB restore during bind");
1050 return;
1051 }
1052 clearIqCallbacks();
1053 if (account.getJid().isBareJid()) {
1054 account.setResource(this.createNewResource());
1055 } else {
1056 fixResource(mXmppConnectionService, account);
1057 }
1058 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1059 final String resource = Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1060 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1061 this.sendUnmodifiedIqPacket(iq, (account, packet) -> {
1062 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1063 return;
1064 }
1065 final Element bind = packet.findChild("bind");
1066 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1067 isBound = true;
1068 final Element jid = bind.findChild("jid");
1069 if (jid != null && jid.getContent() != null) {
1070 try {
1071 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1072 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1073 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server tried to re-assign domain to " + assignedJid.getDomain());
1074 throw new StateChangingError(Account.State.BIND_FAILURE);
1075 }
1076 if (account.setJid(assignedJid)) {
1077 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": jid changed during bind. updating database");
1078 mXmppConnectionService.databaseBackend.updateAccount(account);
1079 }
1080 if (streamFeatures.hasChild("session")
1081 && !streamFeatures.findChild("session").hasChild("optional")) {
1082 sendStartSession();
1083 } else {
1084 sendPostBindInitialization();
1085 }
1086 return;
1087 } catch (final IllegalArgumentException e) {
1088 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server reported invalid jid (" + jid.getContent() + ") on bind");
1089 }
1090 } else {
1091 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure. (no jid)");
1092 }
1093 } else {
1094 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet.toString());
1095 }
1096 final Element error = packet.findChild("error");
1097 if (packet.getType() == IqPacket.TYPE.ERROR && error != null && error.hasChild("conflict")) {
1098 account.setResource(createNewResource());
1099 }
1100 throw new StateChangingError(Account.State.BIND_FAILURE);
1101 }, true);
1102 }
1103
1104 private void clearIqCallbacks() {
1105 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1106 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1107 synchronized (this.packetCallbacks) {
1108 if (this.packetCallbacks.size() == 0) {
1109 return;
1110 }
1111 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": clearing " + this.packetCallbacks.size() + " iq callbacks");
1112 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
1113 while (iterator.hasNext()) {
1114 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1115 callbacks.add(entry.second);
1116 iterator.remove();
1117 }
1118 }
1119 for (OnIqPacketReceived callback : callbacks) {
1120 try {
1121 callback.onIqPacketReceived(account, failurePacket);
1122 } catch (StateChangingError error) {
1123 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": caught StateChangingError(" + error.state.toString() + ") while clearing callbacks");
1124 //ignore
1125 }
1126 }
1127 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
1128 }
1129
1130 public void sendDiscoTimeout() {
1131 if (mWaitForDisco.compareAndSet(true, false)) {
1132 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1133 finalizeBind();
1134 }
1135 }
1136
1137 private void sendStartSession() {
1138 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": sending legacy session to outdated server");
1139 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1140 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1141 this.sendUnmodifiedIqPacket(startSession, (account, packet) -> {
1142 if (packet.getType() == IqPacket.TYPE.RESULT) {
1143 sendPostBindInitialization();
1144 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1145 throw new StateChangingError(Account.State.SESSION_FAILURE);
1146 }
1147 }, true);
1148 }
1149
1150 private void sendPostBindInitialization() {
1151 smVersion = 0;
1152 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
1153 smVersion = 3;
1154 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
1155 smVersion = 2;
1156 }
1157 if (smVersion != 0) {
1158 synchronized (this.mStanzaQueue) {
1159 final EnablePacket enable = new EnablePacket(smVersion);
1160 tagWriter.writeStanzaAsync(enable);
1161 stanzasSent = 0;
1162 mStanzaQueue.clear();
1163 }
1164 }
1165 features.carbonsEnabled = false;
1166 features.blockListRequested = false;
1167 synchronized (this.disco) {
1168 this.disco.clear();
1169 }
1170 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1171 mPendingServiceDiscoveries.set(0);
1172 if (smVersion == 0 || Patches.DISCO_EXCEPTIONS.contains(account.getJid().getDomain().toEscapedString())) {
1173 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": do not wait for service discovery");
1174 mWaitForDisco.set(false);
1175 } else {
1176 mWaitForDisco.set(true);
1177 }
1178 lastDiscoStarted = SystemClock.elapsedRealtime();
1179 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1180 Element caps = streamFeatures.findChild("c");
1181 final String hash = caps == null ? null : caps.getAttribute("hash");
1182 final String ver = caps == null ? null : caps.getAttribute("ver");
1183 ServiceDiscoveryResult discoveryResult = null;
1184 if (hash != null && ver != null) {
1185 discoveryResult = mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1186 }
1187 final boolean requestDiscoItemsFirst = !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1188 if (requestDiscoItemsFirst) {
1189 sendServiceDiscoveryItems(account.getDomain());
1190 }
1191 if (discoveryResult == null) {
1192 sendServiceDiscoveryInfo(account.getDomain());
1193 } else {
1194 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1195 disco.put(account.getDomain(), discoveryResult);
1196 }
1197 discoverMamPreferences();
1198 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1199 if (!requestDiscoItemsFirst) {
1200 sendServiceDiscoveryItems(account.getDomain());
1201 }
1202
1203 if (!mWaitForDisco.get()) {
1204 finalizeBind();
1205 }
1206 this.lastSessionStarted = SystemClock.elapsedRealtime();
1207 }
1208
1209 private void sendServiceDiscoveryInfo(final Jid jid) {
1210 mPendingServiceDiscoveries.incrementAndGet();
1211 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1212 iq.setTo(jid);
1213 iq.query("http://jabber.org/protocol/disco#info");
1214 this.sendIqPacket(iq, (account, packet) -> {
1215 if (packet.getType() == IqPacket.TYPE.RESULT) {
1216 boolean advancedStreamFeaturesLoaded;
1217 synchronized (XmppConnection.this.disco) {
1218 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1219 if (jid.equals(account.getDomain())) {
1220 mXmppConnectionService.databaseBackend.insertDiscoveryResult(result);
1221 }
1222 disco.put(jid, result);
1223 advancedStreamFeaturesLoaded = disco.containsKey(account.getDomain())
1224 && disco.containsKey(account.getJid().asBareJid());
1225 }
1226 if (advancedStreamFeaturesLoaded && (jid.equals(account.getDomain()) || jid.equals(account.getJid().asBareJid()))) {
1227 enableAdvancedStreamFeatures();
1228 }
1229 } else if (packet.getType() == IqPacket.TYPE.ERROR) {
1230 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco info for " + jid.toString());
1231 final boolean serverOrAccount = jid.equals(account.getDomain()) || jid.equals(account.getJid().asBareJid());
1232 final boolean advancedStreamFeaturesLoaded;
1233 if (serverOrAccount) {
1234 synchronized (XmppConnection.this.disco) {
1235 disco.put(jid, ServiceDiscoveryResult.empty());
1236 advancedStreamFeaturesLoaded = disco.containsKey(account.getDomain()) && disco.containsKey(account.getJid().asBareJid());
1237 }
1238 } else {
1239 advancedStreamFeaturesLoaded = false;
1240 }
1241 if (advancedStreamFeaturesLoaded) {
1242 enableAdvancedStreamFeatures();
1243 }
1244 }
1245 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1246 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1247 && mWaitForDisco.compareAndSet(true, false)) {
1248 finalizeBind();
1249 }
1250 }
1251 });
1252 }
1253
1254 private void discoverMamPreferences() {
1255 IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1256 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1257 sendIqPacket(request, (account, response) -> {
1258 if (response.getType() == IqPacket.TYPE.RESULT) {
1259 Element prefs = response.findChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1260 isMamPreferenceAlways = "always".equals(prefs == null ? null : prefs.getAttribute("default"));
1261 }
1262 });
1263 }
1264
1265 private void discoverCommands() {
1266 final IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1267 request.setTo(account.getDomain());
1268 request.addChild("query", Namespace.DISCO_ITEMS).setAttribute("node", Namespace.COMMANDS);
1269 sendIqPacket(request, (account, response) -> {
1270 if (response.getType() == IqPacket.TYPE.RESULT) {
1271 final Element query = response.findChild("query", Namespace.DISCO_ITEMS);
1272 if (query == null) {
1273 return;
1274 }
1275 final HashMap<String, Jid> commands = new HashMap<>();
1276 for (final Element child : query.getChildren()) {
1277 if ("item".equals(child.getName())) {
1278 final String node = child.getAttribute("node");
1279 final Jid jid = child.getAttributeAsJid("jid");
1280 if (node != null && jid != null) {
1281 commands.put(node, jid);
1282 }
1283 }
1284 }
1285 Log.d(Config.LOGTAG, commands.toString());
1286 synchronized (this.commands) {
1287 this.commands.clear();
1288 this.commands.putAll(commands);
1289 }
1290 }
1291 });
1292 }
1293
1294 public boolean isMamPreferenceAlways() {
1295 return isMamPreferenceAlways;
1296 }
1297
1298 private void finalizeBind() {
1299 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
1300 if (bindListener != null) {
1301 bindListener.onBind(account);
1302 }
1303 changeStatus(Account.State.ONLINE);
1304 }
1305
1306 private void enableAdvancedStreamFeatures() {
1307 if (getFeatures().blocking() && !features.blockListRequested) {
1308 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
1309 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1310 }
1311 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1312 listener.onAdvancedStreamFeaturesAvailable(account);
1313 }
1314 if (getFeatures().carbons() && !features.carbonsEnabled) {
1315 sendEnableCarbons();
1316 }
1317 if (getFeatures().commands()) {
1318 discoverCommands();
1319 }
1320 }
1321
1322 private void sendServiceDiscoveryItems(final Jid server) {
1323 mPendingServiceDiscoveries.incrementAndGet();
1324 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1325 iq.setTo(server.getDomain());
1326 iq.query("http://jabber.org/protocol/disco#items");
1327 this.sendIqPacket(iq, (account, packet) -> {
1328 if (packet.getType() == IqPacket.TYPE.RESULT) {
1329 HashSet<Jid> items = new HashSet<Jid>();
1330 final List<Element> elements = packet.query().getChildren();
1331 for (final Element element : elements) {
1332 if (element.getName().equals("item")) {
1333 final Jid jid = InvalidJid.getNullForInvalid(element.getAttributeAsJid("jid"));
1334 if (jid != null && !jid.equals(account.getDomain())) {
1335 items.add(jid);
1336 }
1337 }
1338 }
1339 for (Jid jid : items) {
1340 sendServiceDiscoveryInfo(jid);
1341 }
1342 } else {
1343 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco items of " + server);
1344 }
1345 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1346 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1347 && mWaitForDisco.compareAndSet(true, false)) {
1348 finalizeBind();
1349 }
1350 }
1351 });
1352 }
1353
1354 private void sendEnableCarbons() {
1355 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1356 iq.addChild("enable", "urn:xmpp:carbons:2");
1357 this.sendIqPacket(iq, new OnIqPacketReceived() {
1358
1359 @Override
1360 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1361 if (!packet.hasChild("error")) {
1362 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1363 + ": successfully enabled carbons");
1364 features.carbonsEnabled = true;
1365 } else {
1366 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1367 + ": error enableing carbons " + packet.toString());
1368 }
1369 }
1370 });
1371 }
1372
1373 private void processStreamError(final Tag currentTag) throws XmlPullParserException, IOException {
1374 final Element streamError = tagReader.readElement(currentTag);
1375 if (streamError == null) {
1376 return;
1377 }
1378 if (streamError.hasChild("conflict")) {
1379 account.setResource(createNewResource());
1380 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": switching resource due to conflict (" + account.getResource() + ")");
1381 throw new IOException();
1382 } else if (streamError.hasChild("host-unknown")) {
1383 throw new StateChangingException(Account.State.HOST_UNKNOWN);
1384 } else if (streamError.hasChild("policy-violation")) {
1385 this.lastConnect = SystemClock.elapsedRealtime();
1386 final String text = streamError.findChildContent("text");
1387 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": policy violation. " + text);
1388 failPendingMessages(text);
1389 throw new StateChangingException(Account.State.POLICY_VIOLATION);
1390 } else {
1391 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError.toString());
1392 throw new StateChangingException(Account.State.STREAM_ERROR);
1393 }
1394 }
1395
1396 private void failPendingMessages(final String error) {
1397 synchronized (this.mStanzaQueue) {
1398 for (int i = 0; i < mStanzaQueue.size(); ++i) {
1399 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
1400 if (stanza instanceof MessagePacket) {
1401 final MessagePacket packet = (MessagePacket) stanza;
1402 final String id = packet.getId();
1403 final Jid to = packet.getTo();
1404 mXmppConnectionService.markMessage(account,
1405 to.asBareJid(),
1406 id,
1407 Message.STATUS_SEND_FAILED,
1408 error);
1409 }
1410 }
1411 }
1412 }
1413
1414 private void sendStartStream() throws IOException {
1415 final Tag stream = Tag.start("stream:stream");
1416 stream.setAttribute("to", account.getServer());
1417 stream.setAttribute("version", "1.0");
1418 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
1419 stream.setAttribute("xmlns", "jabber:client");
1420 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1421 tagWriter.writeTag(stream);
1422 }
1423
1424 private String createNewResource() {
1425 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
1426 }
1427
1428 private String nextRandomId() {
1429 return nextRandomId(false);
1430 }
1431
1432 private String nextRandomId(boolean s) {
1433 return CryptoHelper.random(s ? 3 : 9, mXmppConnectionService.getRNG());
1434 }
1435
1436 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1437 packet.setFrom(account.getJid());
1438 return this.sendUnmodifiedIqPacket(packet, callback, false);
1439 }
1440
1441 public synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
1442 if (packet.getId() == null) {
1443 packet.setAttribute("id", nextRandomId());
1444 }
1445 if (callback != null) {
1446 synchronized (this.packetCallbacks) {
1447 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1448 }
1449 }
1450 this.sendPacket(packet, force);
1451 return packet.getId();
1452 }
1453
1454 public void sendMessagePacket(final MessagePacket packet) {
1455 this.sendPacket(packet);
1456 }
1457
1458 public void sendPresencePacket(final PresencePacket packet) {
1459 this.sendPacket(packet);
1460 }
1461
1462 private synchronized void sendPacket(final AbstractStanza packet) {
1463 sendPacket(packet, false);
1464 }
1465
1466 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
1467 if (stanzasSent == Integer.MAX_VALUE) {
1468 resetStreamId();
1469 disconnect(true);
1470 return;
1471 }
1472 synchronized (this.mStanzaQueue) {
1473 if (force || isBound) {
1474 tagWriter.writeStanzaAsync(packet);
1475 } else {
1476 Log.d(Config.LOGTAG, account.getJid().asBareJid() + " do not write stanza to unbound stream " + packet.toString());
1477 }
1478 if (packet instanceof AbstractAcknowledgeableStanza) {
1479 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1480
1481 if (this.mStanzaQueue.size() != 0) {
1482 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
1483 if (currentHighestKey != stanzasSent) {
1484 throw new AssertionError("Stanza count messed up");
1485 }
1486 }
1487
1488 ++stanzasSent;
1489 this.mStanzaQueue.append(stanzasSent, stanza);
1490 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
1491 if (Config.EXTENDED_SM_LOGGING) {
1492 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1493 }
1494 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1495 }
1496 }
1497 }
1498 }
1499
1500 public void sendPing() {
1501 if (!r()) {
1502 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1503 iq.setFrom(account.getJid());
1504 iq.addChild("ping", Namespace.PING);
1505 this.sendIqPacket(iq, null);
1506 }
1507 this.lastPingSent = SystemClock.elapsedRealtime();
1508 }
1509
1510 public void setOnMessagePacketReceivedListener(
1511 final OnMessagePacketReceived listener) {
1512 this.messageListener = listener;
1513 }
1514
1515 public void setOnUnregisteredIqPacketReceivedListener(
1516 final OnIqPacketReceived listener) {
1517 this.unregisteredIqListener = listener;
1518 }
1519
1520 public void setOnPresencePacketReceivedListener(
1521 final OnPresencePacketReceived listener) {
1522 this.presenceListener = listener;
1523 }
1524
1525 public void setOnJinglePacketReceivedListener(
1526 final OnJinglePacketReceived listener) {
1527 this.jingleListener = listener;
1528 }
1529
1530 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1531 this.statusListener = listener;
1532 }
1533
1534 public void setOnBindListener(final OnBindListener listener) {
1535 this.bindListener = listener;
1536 }
1537
1538 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1539 this.acknowledgedListener = listener;
1540 }
1541
1542 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1543 this.advancedStreamFeaturesLoadedListeners.add(listener);
1544 }
1545
1546 private void forceCloseSocket() {
1547 FileBackend.close(this.socket);
1548 FileBackend.close(this.tagReader);
1549 }
1550
1551 public void interrupt() {
1552 if (this.mThread != null) {
1553 this.mThread.interrupt();
1554 }
1555 }
1556
1557 public void disconnect(final boolean force) {
1558 interrupt();
1559 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
1560 if (force) {
1561 forceCloseSocket();
1562 } else {
1563 final TagWriter currentTagWriter = this.tagWriter;
1564 if (currentTagWriter.isActive()) {
1565 currentTagWriter.finish();
1566 final Socket currentSocket = this.socket;
1567 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
1568 try {
1569 currentTagWriter.await(1, TimeUnit.SECONDS);
1570 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
1571 currentTagWriter.writeTag(Tag.end("stream:stream"));
1572 if (streamCountDownLatch != null) {
1573 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
1574 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote ended stream");
1575 } else {
1576 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote has not closed socket. force closing");
1577 }
1578 }
1579 } catch (InterruptedException e) {
1580 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while gracefully closing stream");
1581 } catch (final IOException e) {
1582 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": io exception during disconnect (" + e.getMessage() + ")");
1583 } finally {
1584 FileBackend.close(currentSocket);
1585 }
1586 } else {
1587 forceCloseSocket();
1588 }
1589 }
1590 }
1591
1592 private void resetStreamId() {
1593 this.streamId = null;
1594 }
1595
1596 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
1597 synchronized (this.disco) {
1598 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
1599 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
1600 if (cursor.getValue().getFeatures().contains(feature)) {
1601 items.add(cursor);
1602 }
1603 }
1604 return items;
1605 }
1606 }
1607
1608 public Jid findDiscoItemByFeature(final String feature) {
1609 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
1610 if (items.size() >= 1) {
1611 return items.get(0).getKey();
1612 }
1613 return null;
1614 }
1615
1616 public boolean r() {
1617 if (getFeatures().sm()) {
1618 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1619 return true;
1620 } else {
1621 return false;
1622 }
1623 }
1624
1625 public List<String> getMucServersWithholdAccount() {
1626 List<String> servers = getMucServers();
1627 servers.remove(account.getDomain());
1628 return servers;
1629 }
1630
1631 public List<String> getMucServers() {
1632 List<String> servers = new ArrayList<>();
1633 synchronized (this.disco) {
1634 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
1635 final ServiceDiscoveryResult value = cursor.getValue();
1636 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
1637 && value.hasIdentity("conference", "text")
1638 && !value.getFeatures().contains("jabber:iq:gateway")
1639 && !value.hasIdentity("conference", "irc")) {
1640 servers.add(cursor.getKey().toString());
1641 }
1642 }
1643 }
1644 return servers;
1645 }
1646
1647 public String getMucServer() {
1648 List<String> servers = getMucServers();
1649 return servers.size() > 0 ? servers.get(0) : null;
1650 }
1651
1652 public int getTimeToNextAttempt() {
1653 final int additionalTime = account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
1654 final int interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
1655 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1656 return interval - secondsSinceLast;
1657 }
1658
1659 public int getAttempt() {
1660 return this.attempt;
1661 }
1662
1663 public Features getFeatures() {
1664 return this.features;
1665 }
1666
1667 public long getLastSessionEstablished() {
1668 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1669 return System.currentTimeMillis() - diff;
1670 }
1671
1672 public long getLastConnect() {
1673 return this.lastConnect;
1674 }
1675
1676 public long getLastPingSent() {
1677 return this.lastPingSent;
1678 }
1679
1680 public long getLastDiscoStarted() {
1681 return this.lastDiscoStarted;
1682 }
1683
1684 public long getLastPacketReceived() {
1685 return this.lastPacketReceived;
1686 }
1687
1688 public void sendActive() {
1689 this.sendPacket(new ActivePacket());
1690 }
1691
1692 public void sendInactive() {
1693 this.sendPacket(new InactivePacket());
1694 }
1695
1696 public void resetAttemptCount(boolean resetConnectTime) {
1697 this.attempt = 0;
1698 if (resetConnectTime) {
1699 this.lastConnect = 0;
1700 }
1701 }
1702
1703 public void setInteractive(boolean interactive) {
1704 this.mInteractive = interactive;
1705 }
1706
1707 public Identity getServerIdentity() {
1708 synchronized (this.disco) {
1709 ServiceDiscoveryResult result = disco.get(account.getJid().getDomain());
1710 if (result == null) {
1711 return Identity.UNKNOWN;
1712 }
1713 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
1714 if (id.getType().equals("im") && id.getCategory().equals("server") && id.getName() != null) {
1715 switch (id.getName()) {
1716 case "Prosody":
1717 return Identity.PROSODY;
1718 case "ejabberd":
1719 return Identity.EJABBERD;
1720 case "Slack-XMPP":
1721 return Identity.SLACK;
1722 }
1723 }
1724 }
1725 }
1726 return Identity.UNKNOWN;
1727 }
1728
1729 private IqGenerator getIqGenerator() {
1730 return mXmppConnectionService.getIqGenerator();
1731 }
1732
1733 public enum Identity {
1734 FACEBOOK,
1735 SLACK,
1736 EJABBERD,
1737 PROSODY,
1738 NIMBUZZ,
1739 UNKNOWN
1740 }
1741
1742 private static class TlsFactoryVerifier {
1743 private final SSLSocketFactory factory;
1744 private final DomainHostnameVerifier verifier;
1745
1746 TlsFactoryVerifier(final SSLSocketFactory factory, final DomainHostnameVerifier verifier) throws IOException {
1747 this.factory = factory;
1748 this.verifier = verifier;
1749 if (factory == null || verifier == null) {
1750 throw new IOException("could not setup ssl");
1751 }
1752 }
1753 }
1754
1755 private class MyKeyManager implements X509KeyManager {
1756 @Override
1757 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
1758 return account.getPrivateKeyAlias();
1759 }
1760
1761 @Override
1762 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
1763 return null;
1764 }
1765
1766 @Override
1767 public X509Certificate[] getCertificateChain(String alias) {
1768 Log.d(Config.LOGTAG, "getting certificate chain");
1769 try {
1770 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
1771 } catch (Exception e) {
1772 Log.d(Config.LOGTAG, e.getMessage());
1773 return new X509Certificate[0];
1774 }
1775 }
1776
1777 @Override
1778 public String[] getClientAliases(String s, Principal[] principals) {
1779 final String alias = account.getPrivateKeyAlias();
1780 return alias != null ? new String[]{alias} : new String[0];
1781 }
1782
1783 @Override
1784 public String[] getServerAliases(String s, Principal[] principals) {
1785 return new String[0];
1786 }
1787
1788 @Override
1789 public PrivateKey getPrivateKey(String alias) {
1790 try {
1791 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
1792 } catch (Exception e) {
1793 return null;
1794 }
1795 }
1796 }
1797
1798 private class StateChangingError extends Error {
1799 private final Account.State state;
1800
1801 public StateChangingError(Account.State state) {
1802 this.state = state;
1803 }
1804 }
1805
1806 private class StateChangingException extends IOException {
1807 private final Account.State state;
1808
1809 public StateChangingException(Account.State state) {
1810 this.state = state;
1811 }
1812 }
1813
1814 public class Features {
1815 XmppConnection connection;
1816 private boolean carbonsEnabled = false;
1817 private boolean encryptionEnabled = false;
1818 private boolean blockListRequested = false;
1819
1820 public Features(final XmppConnection connection) {
1821 this.connection = connection;
1822 }
1823
1824 private boolean hasDiscoFeature(final Jid server, final String feature) {
1825 synchronized (XmppConnection.this.disco) {
1826 return connection.disco.containsKey(server) &&
1827 connection.disco.get(server).getFeatures().contains(feature);
1828 }
1829 }
1830
1831 public boolean carbons() {
1832 return hasDiscoFeature(account.getDomain(), "urn:xmpp:carbons:2");
1833 }
1834
1835 public boolean commands() {
1836 return hasDiscoFeature(account.getDomain(), Namespace.COMMANDS);
1837 }
1838
1839 public boolean easyOnboardingInvites() {
1840 synchronized (commands) {
1841 return commands.containsKey(Namespace.EASY_ONBOARDING_INVITE);
1842 }
1843 }
1844
1845 public boolean bookmarksConversion() {
1846 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION) && pepPublishOptions();
1847 }
1848
1849 public boolean avatarConversion() {
1850 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.AVATAR_CONVERSION) && pepPublishOptions();
1851 }
1852
1853 public boolean blocking() {
1854 return hasDiscoFeature(account.getDomain(), Namespace.BLOCKING);
1855 }
1856
1857 public boolean spamReporting() {
1858 return hasDiscoFeature(account.getDomain(), "urn:xmpp:reporting:reason:spam:0");
1859 }
1860
1861 public boolean flexibleOfflineMessageRetrieval() {
1862 return hasDiscoFeature(account.getDomain(), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
1863 }
1864
1865 public boolean register() {
1866 return hasDiscoFeature(account.getDomain(), Namespace.REGISTER);
1867 }
1868
1869 public boolean invite() {
1870 return connection.streamFeatures != null && connection.streamFeatures.hasChild("register", Namespace.INVITE);
1871 }
1872
1873 public boolean sm() {
1874 return streamId != null
1875 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1876 }
1877
1878 public boolean csi() {
1879 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1880 }
1881
1882 public boolean pep() {
1883 synchronized (XmppConnection.this.disco) {
1884 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1885 return info != null && info.hasIdentity("pubsub", "pep");
1886 }
1887 }
1888
1889 public boolean pepPersistent() {
1890 synchronized (XmppConnection.this.disco) {
1891 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1892 return info != null && info.getFeatures().contains("http://jabber.org/protocol/pubsub#persistent-items");
1893 }
1894 }
1895
1896 public boolean pepPublishOptions() {
1897 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
1898 }
1899
1900 public boolean pepOmemoWhitelisted() {
1901 return hasDiscoFeature(account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
1902 }
1903
1904 public boolean mam() {
1905 return MessageArchiveService.Version.has(getAccountFeatures());
1906 }
1907
1908 public List<String> getAccountFeatures() {
1909 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
1910 return result == null ? Collections.emptyList() : result.getFeatures();
1911 }
1912
1913 public boolean push() {
1914 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
1915 || hasDiscoFeature(account.getDomain(), Namespace.PUSH);
1916 }
1917
1918 public boolean rosterVersioning() {
1919 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1920 }
1921
1922 public void setBlockListRequested(boolean value) {
1923 this.blockListRequested = value;
1924 }
1925
1926 public boolean p1S3FileTransfer() {
1927 return hasDiscoFeature(account.getDomain(), Namespace.P1_S3_FILE_TRANSFER);
1928 }
1929
1930 public boolean httpUpload(long filesize) {
1931 if (Config.DISABLE_HTTP_UPLOAD) {
1932 return false;
1933 } else {
1934 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1935 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1936 if (items.size() > 0) {
1937 try {
1938 long maxsize = Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1939 if (filesize <= maxsize) {
1940 return true;
1941 } else {
1942 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": http upload is not available for files with size " + filesize + " (max is " + maxsize + ")");
1943 return false;
1944 }
1945 } catch (Exception e) {
1946 return true;
1947 }
1948 }
1949 }
1950 return false;
1951 }
1952 }
1953
1954 public boolean useLegacyHttpUpload() {
1955 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
1956 }
1957
1958 public long getMaxHttpUploadSize() {
1959 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1960 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1961 if (items.size() > 0) {
1962 try {
1963 return Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1964 } catch (Exception e) {
1965 //ignored
1966 }
1967 }
1968 }
1969 return -1;
1970 }
1971
1972 public boolean stanzaIds() {
1973 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
1974 }
1975
1976 public boolean bookmarks2() {
1977 return Config.USE_BOOKMARKS2 /* || hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS2_COMPAT)*/;
1978 }
1979
1980 public boolean externalServiceDiscovery() {
1981 return hasDiscoFeature(account.getDomain(), Namespace.EXTERNAL_SERVICE_DISCOVERY);
1982 }
1983 }
1984}