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