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.util.Base64;
9import android.util.Log;
10import android.util.Pair;
11import android.util.SparseArray;
12
13import androidx.annotation.NonNull;
14
15import com.google.common.base.Strings;
16
17import org.xmlpull.v1.XmlPullParserException;
18
19import java.io.ByteArrayInputStream;
20import java.io.IOException;
21import java.io.InputStream;
22import java.net.ConnectException;
23import java.net.IDN;
24import java.net.InetAddress;
25import java.net.InetSocketAddress;
26import java.net.Socket;
27import java.net.UnknownHostException;
28import java.security.KeyManagementException;
29import java.security.NoSuchAlgorithmException;
30import java.security.Principal;
31import java.security.PrivateKey;
32import java.security.cert.X509Certificate;
33import java.util.ArrayList;
34import java.util.Arrays;
35import java.util.Collections;
36import java.util.HashMap;
37import java.util.HashSet;
38import java.util.Hashtable;
39import java.util.Iterator;
40import java.util.List;
41import java.util.Map.Entry;
42import java.util.Set;
43import java.util.concurrent.CountDownLatch;
44import java.util.concurrent.TimeUnit;
45import java.util.concurrent.atomic.AtomicBoolean;
46import java.util.concurrent.atomic.AtomicInteger;
47import java.util.regex.Matcher;
48
49import javax.net.ssl.KeyManager;
50import javax.net.ssl.SSLContext;
51import javax.net.ssl.SSLPeerUnverifiedException;
52import javax.net.ssl.SSLSocket;
53import javax.net.ssl.SSLSocketFactory;
54import javax.net.ssl.X509KeyManager;
55import javax.net.ssl.X509TrustManager;
56
57import eu.siacs.conversations.Config;
58import eu.siacs.conversations.R;
59import eu.siacs.conversations.crypto.XmppDomainVerifier;
60import eu.siacs.conversations.crypto.axolotl.AxolotlService;
61import eu.siacs.conversations.crypto.sasl.Anonymous;
62import eu.siacs.conversations.crypto.sasl.DigestMd5;
63import eu.siacs.conversations.crypto.sasl.External;
64import eu.siacs.conversations.crypto.sasl.Plain;
65import eu.siacs.conversations.crypto.sasl.SaslMechanism;
66import eu.siacs.conversations.crypto.sasl.ScramSha1;
67import eu.siacs.conversations.crypto.sasl.ScramSha256;
68import eu.siacs.conversations.crypto.sasl.ScramSha512;
69import eu.siacs.conversations.entities.Account;
70import eu.siacs.conversations.entities.Message;
71import eu.siacs.conversations.entities.ServiceDiscoveryResult;
72import eu.siacs.conversations.generator.IqGenerator;
73import eu.siacs.conversations.http.HttpConnectionManager;
74import eu.siacs.conversations.persistance.FileBackend;
75import eu.siacs.conversations.services.MemorizingTrustManager;
76import eu.siacs.conversations.services.MessageArchiveService;
77import eu.siacs.conversations.services.NotificationService;
78import eu.siacs.conversations.services.XmppConnectionService;
79import eu.siacs.conversations.utils.CryptoHelper;
80import eu.siacs.conversations.utils.Patterns;
81import eu.siacs.conversations.utils.Resolver;
82import eu.siacs.conversations.utils.SSLSocketHelper;
83import eu.siacs.conversations.utils.SocksSocketFactory;
84import eu.siacs.conversations.utils.XmlHelper;
85import eu.siacs.conversations.xml.Element;
86import eu.siacs.conversations.xml.LocalizedContent;
87import eu.siacs.conversations.xml.Namespace;
88import eu.siacs.conversations.xml.Tag;
89import eu.siacs.conversations.xml.TagWriter;
90import eu.siacs.conversations.xml.XmlReader;
91import eu.siacs.conversations.xmpp.forms.Data;
92import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
93import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
94import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
95import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
96import eu.siacs.conversations.xmpp.stanzas.IqPacket;
97import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
98import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
99import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
100import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
101import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
102import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
103import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
104import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
105import okhttp3.HttpUrl;
106
107public class XmppConnection implements Runnable {
108
109 private static final int PACKET_IQ = 0;
110 private static final int PACKET_MESSAGE = 1;
111 private static final int PACKET_PRESENCE = 2;
112 public final OnIqPacketReceived registrationResponseListener = (account, 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 protected final Account account;
138 private final Features features = new Features(this);
139 private final HashMap<Jid, ServiceDiscoveryResult> disco = new HashMap<>();
140 private final HashMap<String, Jid> commands = new HashMap<>();
141 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
142 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
143 private final Set<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new HashSet<>();
144 private final XmppConnectionService mXmppConnectionService;
145 private Socket socket;
146 private XmlReader tagReader;
147 private TagWriter tagWriter = new TagWriter();
148 private boolean shouldAuthenticate = true;
149 private boolean inSmacksSession = false;
150 private boolean isBound = false;
151 private Element streamFeatures;
152 private String streamId = null;
153 private int smVersion = 3;
154 private int stanzasReceived = 0;
155 private int stanzasSent = 0;
156 private long lastPacketReceived = 0;
157 private long lastPingSent = 0;
158 private long lastConnect = 0;
159 private long lastSessionStarted = 0;
160 private long lastDiscoStarted = 0;
161 private boolean isMamPreferenceAlways = false;
162 private final AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
163 private final AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
164 private final AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
165 private final AtomicInteger mSmCatchupMessageCounter = new AtomicInteger(0);
166 private boolean mInteractive = false;
167 private int attempt = 0;
168 private OnPresencePacketReceived presenceListener = null;
169 private OnJinglePacketReceived jingleListener = null;
170 private OnIqPacketReceived unregisteredIqListener = null;
171 private OnMessagePacketReceived messageListener = null;
172 private OnStatusChanged statusListener = null;
173 private OnBindListener bindListener = null;
174 private OnMessageAcknowledged acknowledgedListener = null;
175 private SaslMechanism saslMechanism;
176 private HttpUrl redirectionUrl = null;
177 private String verifiedHostname = null;
178 private volatile Thread mThread;
179 private CountDownLatch mStreamCountDownLatch;
180
181
182 public XmppConnection(final Account account, final XmppConnectionService service) {
183 this.account = account;
184 this.mXmppConnectionService = service;
185 }
186
187 private static void fixResource(Context context, Account account) {
188 String resource = account.getResource();
189 int fixedPartLength = context.getString(R.string.app_name).length() + 1; //include the trailing dot
190 int randomPartLength = 4; // 3 bytes
191 if (resource != null && resource.length() > fixedPartLength + randomPartLength) {
192 if (validBase64(resource.substring(fixedPartLength, fixedPartLength + randomPartLength))) {
193 account.setResource(resource.substring(0, fixedPartLength + randomPartLength));
194 }
195 }
196 }
197
198 private static boolean validBase64(String input) {
199 try {
200 return Base64.decode(input, Base64.URL_SAFE).length == 3;
201 } catch (Throwable throwable) {
202 return false;
203 }
204 }
205
206 private void changeStatus(final Account.State nextStatus) {
207 synchronized (this) {
208 if (Thread.currentThread().isInterrupted()) {
209 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not changing status to " + nextStatus + " because thread was interrupted");
210 return;
211 }
212 if (account.getStatus() != nextStatus) {
213 if ((nextStatus == Account.State.OFFLINE)
214 && (account.getStatus() != Account.State.CONNECTING)
215 && (account.getStatus() != Account.State.ONLINE)
216 && (account.getStatus() != Account.State.DISABLED)) {
217 return;
218 }
219 if (nextStatus == Account.State.ONLINE) {
220 this.attempt = 0;
221 }
222 account.setStatus(nextStatus);
223 } else {
224 return;
225 }
226 }
227 if (statusListener != null) {
228 statusListener.onStatusChanged(account);
229 }
230 }
231
232 public Jid getJidForCommand(final String node) {
233 synchronized (this.commands) {
234 return this.commands.get(node);
235 }
236 }
237
238 public void prepareNewConnection() {
239 this.lastConnect = SystemClock.elapsedRealtime();
240 this.lastPingSent = SystemClock.elapsedRealtime();
241 this.lastDiscoStarted = Long.MAX_VALUE;
242 this.mWaitingForSmCatchup.set(false);
243 this.changeStatus(Account.State.CONNECTING);
244 }
245
246 public boolean isWaitingForSmCatchup() {
247 return mWaitingForSmCatchup.get();
248 }
249
250 public void incrementSmCatchupMessageCounter() {
251 this.mSmCatchupMessageCounter.incrementAndGet();
252 }
253
254 protected void connect() {
255 if (mXmppConnectionService.areMessagesInitialized()) {
256 mXmppConnectionService.resetSendingToWaiting(account);
257 }
258 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
259 features.encryptionEnabled = false;
260 inSmacksSession = false;
261 isBound = false;
262 this.attempt++;
263 this.verifiedHostname = null; //will be set if user entered hostname is being used or hostname was verified with dnssec
264 try {
265 Socket localSocket;
266 shouldAuthenticate = !account.isOptionSet(Account.OPTION_REGISTER);
267 this.changeStatus(Account.State.CONNECTING);
268 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
269 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
270 if (useTor) {
271 String destination;
272 if (account.getHostname().isEmpty() || account.isOnion()) {
273 destination = account.getServer();
274 } else {
275 destination = account.getHostname();
276 this.verifiedHostname = destination;
277 }
278
279 final int port = account.getPort();
280 final boolean directTls = Resolver.useDirectTls(port);
281
282 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": connect to " + destination + " via Tor. directTls=" + directTls);
283 localSocket = SocksSocketFactory.createSocketOverTor(destination, port);
284
285 if (directTls) {
286 localSocket = upgradeSocketToTls(localSocket);
287 features.encryptionEnabled = true;
288 }
289
290 try {
291 startXmpp(localSocket);
292 } catch (InterruptedException e) {
293 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
294 return;
295 } catch (Exception e) {
296 throw new IOException(e.getMessage());
297 }
298 } else {
299 final String domain = account.getServer();
300 final List<Resolver.Result> results;
301 final boolean hardcoded = extended && !account.getHostname().isEmpty();
302 if (hardcoded) {
303 results = Resolver.fromHardCoded(account.getHostname(), account.getPort());
304 } else {
305 results = Resolver.resolve(domain);
306 }
307 if (Thread.currentThread().isInterrupted()) {
308 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
309 return;
310 }
311 if (results.size() == 0) {
312 Log.e(Config.LOGTAG, account.getJid().asBareJid() + ": Resolver results were empty");
313 return;
314 }
315 final Resolver.Result storedBackupResult;
316 if (hardcoded) {
317 storedBackupResult = null;
318 } else {
319 storedBackupResult = mXmppConnectionService.databaseBackend.findResolverResult(domain);
320 if (storedBackupResult != null && !results.contains(storedBackupResult)) {
321 results.add(storedBackupResult);
322 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": loaded backup resolver result from db: " + storedBackupResult);
323 }
324 }
325 for (Iterator<Resolver.Result> iterator = results.iterator(); iterator.hasNext(); ) {
326 final Resolver.Result result = iterator.next();
327 if (Thread.currentThread().isInterrupted()) {
328 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
329 return;
330 }
331 try {
332 // if tls is true, encryption is implied and must not be started
333 features.encryptionEnabled = result.isDirectTls();
334 verifiedHostname = result.isAuthenticated() ? result.getHostname().toString() : null;
335 Log.d(Config.LOGTAG, "verified hostname " + verifiedHostname);
336 final InetSocketAddress addr;
337 if (result.getIp() != null) {
338 addr = new InetSocketAddress(result.getIp(), result.getPort());
339 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
340 + ": using values from resolver " + (result.getHostname() == null ? "" : result.getHostname().toString()
341 + "/") + result.getIp().getHostAddress() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
342 } else {
343 addr = new InetSocketAddress(IDN.toASCII(result.getHostname().toString()), result.getPort());
344 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
345 + ": using values from resolver "
346 + result.getHostname().toString() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
347 }
348
349 localSocket = new Socket();
350 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
351
352 if (features.encryptionEnabled) {
353 localSocket = upgradeSocketToTls(localSocket);
354 }
355
356 localSocket.setSoTimeout(Config.SOCKET_TIMEOUT * 1000);
357 if (startXmpp(localSocket)) {
358 localSocket.setSoTimeout(0); //reset to 0; once the connection is established we don’t want this
359 if (!hardcoded && !result.equals(storedBackupResult)) {
360 mXmppConnectionService.databaseBackend.saveResolverResult(domain, result);
361 }
362 break; // successfully connected to server that speaks xmpp
363 } else {
364 FileBackend.close(localSocket);
365 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
366 }
367 } catch (final StateChangingException e) {
368 if (!iterator.hasNext()) {
369 throw e;
370 }
371 } catch (InterruptedException e) {
372 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
373 return;
374 } catch (final Throwable e) {
375 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage() + "(" + e.getClass().getName() + ")");
376 if (!iterator.hasNext()) {
377 throw new UnknownHostException();
378 }
379 }
380 }
381 }
382 processStream();
383 } catch (final SecurityException e) {
384 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
385 } catch (final StateChangingException e) {
386 this.changeStatus(e.state);
387 } catch (final UnknownHostException | ConnectException | 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 SSLSocketFactory getSSLSocketFactory() throws NoSuchAlgorithmException, KeyManagementException {
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 return sc.getSocketFactory();
445 }
446
447 @Override
448 public void run() {
449 synchronized (this) {
450 this.mThread = Thread.currentThread();
451 if (this.mThread.isInterrupted()) {
452 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": aborting connect because thread was interrupted");
453 return;
454 }
455 forceCloseSocket();
456 }
457 connect();
458 }
459
460 private void processStream() throws XmlPullParserException, IOException {
461 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
462 this.mStreamCountDownLatch = streamCountDownLatch;
463 Tag nextTag = tagReader.readTag();
464 while (nextTag != null && !nextTag.isEnd("stream")) {
465 if (nextTag.isStart("error")) {
466 processStreamError(nextTag);
467 } else if (nextTag.isStart("features")) {
468 processStreamFeatures(nextTag);
469 } else if (nextTag.isStart("proceed")) {
470 switchOverToTls();
471 } else if (nextTag.isStart("success")) {
472 final String challenge = tagReader.readElement(nextTag).getContent();
473 try {
474 saslMechanism.getResponse(challenge);
475 } catch (final SaslMechanism.AuthenticationException e) {
476 Log.e(Config.LOGTAG, String.valueOf(e));
477 throw new StateChangingException(Account.State.UNAUTHORIZED);
478 }
479 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": logged in");
480 account.setKey(Account.PINNED_MECHANISM_KEY,
481 String.valueOf(saslMechanism.getPriority()));
482 tagReader.reset();
483 sendStartStream();
484 final Tag tag = tagReader.readTag();
485 if (tag != null && tag.isStart("stream")) {
486 processStream();
487 } else {
488 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
489 }
490 break;
491 } else if (nextTag.isStart("failure")) {
492 final Element failure = tagReader.readElement(nextTag);
493 if (Namespace.SASL.equals(failure.getNamespace())) {
494 if (failure.hasChild("temporary-auth-failure")) {
495 throw new StateChangingException(Account.State.TEMPORARY_AUTH_FAILURE);
496 } else if (failure.hasChild("account-disabled")) {
497 final String text = failure.findChildContent("text");
498 if ( Strings.isNullOrEmpty(text)) {
499 throw new StateChangingException(Account.State.UNAUTHORIZED);
500 }
501 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
502 if (matcher.find()) {
503 final HttpUrl url;
504 try {
505 url = HttpUrl.get(text.substring(matcher.start(), matcher.end()));
506 } catch (final IllegalArgumentException e) {
507 throw new StateChangingException(Account.State.UNAUTHORIZED);
508 }
509 if (url.isHttps()) {
510 this.redirectionUrl = url;
511 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
512 }
513 }
514 }
515 throw new StateChangingException(Account.State.UNAUTHORIZED);
516 } else if (Namespace.TLS.equals(failure.getNamespace())) {
517 throw new StateChangingException(Account.State.TLS_ERROR);
518 } else {
519 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
520 }
521 } else if (nextTag.isStart("challenge")) {
522 final String challenge = tagReader.readElement(nextTag).getContent();
523 final Element response = new Element("response", Namespace.SASL);
524 try {
525 response.setContent(saslMechanism.getResponse(challenge));
526 } catch (final SaslMechanism.AuthenticationException e) {
527 // TODO: Send auth abort tag.
528 Log.e(Config.LOGTAG, e.toString());
529 }
530 tagWriter.writeElement(response);
531 } else if (nextTag.isStart("enabled")) {
532 final Element enabled = tagReader.readElement(nextTag);
533 if ("true".equals(enabled.getAttribute("resume"))) {
534 this.streamId = enabled.getAttribute("id");
535 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
536 + ": stream management(" + smVersion
537 + ") enabled (resumable)");
538 } else {
539 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
540 + ": stream management(" + smVersion + ") enabled");
541 }
542 this.stanzasReceived = 0;
543 this.inSmacksSession = true;
544 final RequestPacket r = new RequestPacket(smVersion);
545 tagWriter.writeStanzaAsync(r);
546 } else if (nextTag.isStart("resumed")) {
547 this.inSmacksSession = true;
548 this.isBound = true;
549 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
550 lastPacketReceived = SystemClock.elapsedRealtime();
551 final Element resumed = tagReader.readElement(nextTag);
552 final String h = resumed.getAttribute("h");
553 try {
554 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
555 final boolean acknowledgedMessages;
556 synchronized (this.mStanzaQueue) {
557 final int serverCount = Integer.parseInt(h);
558 if (serverCount < stanzasSent) {
559 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
560 + ": session resumed with lost packages");
561 stanzasSent = serverCount;
562 } else {
563 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": session resumed");
564 }
565 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
566 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
567 failedStanzas.add(mStanzaQueue.valueAt(i));
568 }
569 mStanzaQueue.clear();
570 }
571 if (acknowledgedMessages) {
572 mXmppConnectionService.updateConversationUi();
573 }
574 Log.d(Config.LOGTAG, "resending " + failedStanzas.size() + " stanzas");
575 for (AbstractAcknowledgeableStanza packet : failedStanzas) {
576 if (packet instanceof MessagePacket) {
577 MessagePacket message = (MessagePacket) packet;
578 mXmppConnectionService.markMessage(account,
579 message.getTo().asBareJid(),
580 message.getId(),
581 Message.STATUS_UNSEND);
582 }
583 sendPacket(packet);
584 }
585 } catch (final NumberFormatException ignored) {
586 }
587 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
588 changeStatus(Account.State.ONLINE);
589 } else if (nextTag.isStart("r")) {
590 tagReader.readElement(nextTag);
591 if (Config.EXTENDED_SM_LOGGING) {
592 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
593 }
594 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
595 tagWriter.writeStanzaAsync(ack);
596 } else if (nextTag.isStart("a")) {
597 boolean accountUiNeedsRefresh = false;
598 synchronized (NotificationService.CATCHUP_LOCK) {
599 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
600 final int messageCount = mSmCatchupMessageCounter.get();
601 final int pendingIQs = packetCallbacks.size();
602 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": SM catchup complete (messages=" + messageCount + ", pending IQs=" + pendingIQs + ")");
603 accountUiNeedsRefresh = true;
604 if (messageCount > 0) {
605 mXmppConnectionService.getNotificationService().finishBacklog(true, account);
606 }
607 }
608 }
609 if (accountUiNeedsRefresh) {
610 mXmppConnectionService.updateAccountUi();
611 }
612 final Element ack = tagReader.readElement(nextTag);
613 lastPacketReceived = SystemClock.elapsedRealtime();
614 try {
615 final boolean acknowledgedMessages;
616 synchronized (this.mStanzaQueue) {
617 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
618 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence);
619 }
620 if (acknowledgedMessages) {
621 mXmppConnectionService.updateConversationUi();
622 }
623 } catch (NumberFormatException | NullPointerException e) {
624 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server send ack without sequence number");
625 }
626 } else if (nextTag.isStart("failed")) {
627 Element failed = tagReader.readElement(nextTag);
628 try {
629 final int serverCount = Integer.parseInt(failed.getAttribute("h"));
630 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed but server acknowledged stanza #" + serverCount);
631 final boolean acknowledgedMessages;
632 synchronized (this.mStanzaQueue) {
633 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
634 }
635 if (acknowledgedMessages) {
636 mXmppConnectionService.updateConversationUi();
637 }
638 } catch (NumberFormatException | NullPointerException e) {
639 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
640 }
641 resetStreamId();
642 sendBindRequest();
643 } else if (nextTag.isStart("iq")) {
644 processIq(nextTag);
645 } else if (nextTag.isStart("message")) {
646 processMessage(nextTag);
647 } else if (nextTag.isStart("presence")) {
648 processPresence(nextTag);
649 }
650 nextTag = tagReader.readTag();
651 }
652 if (nextTag != null && nextTag.isEnd("stream")) {
653 streamCountDownLatch.countDown();
654 }
655 }
656
657 private boolean acknowledgeStanzaUpTo(int serverCount) {
658 if (serverCount > stanzasSent) {
659 Log.e(Config.LOGTAG, "server acknowledged more stanzas than we sent. serverCount=" + serverCount + ", ourCount=" + stanzasSent);
660 }
661 boolean acknowledgedMessages = false;
662 for (int i = 0; i < mStanzaQueue.size(); ++i) {
663 if (serverCount >= mStanzaQueue.keyAt(i)) {
664 if (Config.EXTENDED_SM_LOGGING) {
665 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
666 }
667 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
668 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
669 final MessagePacket packet = (MessagePacket) stanza;
670 final String id = packet.getId();
671 final Jid to = packet.getTo();
672 if (id != null && to != null) {
673 acknowledgedMessages |= acknowledgedListener.onMessageAcknowledged(account, to, id);
674 }
675 }
676 mStanzaQueue.removeAt(i);
677 i--;
678 }
679 }
680 return acknowledgedMessages;
681 }
682
683 private @NonNull
684 Element processPacket(final Tag currentTag, final int packetType) throws IOException {
685 final Element element;
686 switch (packetType) {
687 case PACKET_IQ:
688 element = new IqPacket();
689 break;
690 case PACKET_MESSAGE:
691 element = new MessagePacket();
692 break;
693 case PACKET_PRESENCE:
694 element = new PresencePacket();
695 break;
696 default:
697 throw new AssertionError("Should never encounter invalid type");
698 }
699 element.setAttributes(currentTag.getAttributes());
700 Tag nextTag = tagReader.readTag();
701 if (nextTag == null) {
702 throw new IOException("interrupted mid tag");
703 }
704 while (!nextTag.isEnd(element.getName())) {
705 if (!nextTag.isNo()) {
706 element.addChild(tagReader.readElement(nextTag));
707 }
708 nextTag = tagReader.readTag();
709 if (nextTag == null) {
710 throw new IOException("interrupted mid tag");
711 }
712 }
713 if (stanzasReceived == Integer.MAX_VALUE) {
714 resetStreamId();
715 throw new IOException("time to restart the session. cant handle >2 billion pcks");
716 }
717 if (inSmacksSession) {
718 ++stanzasReceived;
719 } else if (features.sm()) {
720 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not counting stanza(" + element.getClass().getSimpleName() + "). Not in smacks session.");
721 }
722 lastPacketReceived = SystemClock.elapsedRealtime();
723 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
724 Log.d(Config.LOGTAG, "[background stanza] " + element);
725 }
726 if (element instanceof IqPacket
727 && (((IqPacket) element).getType() == IqPacket.TYPE.SET)
728 && element.hasChild("jingle", Namespace.JINGLE)) {
729 return JinglePacket.upgrade((IqPacket) element);
730 } else {
731 return element;
732 }
733 }
734
735 private void processIq(final Tag currentTag) throws IOException {
736 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
737 if (!packet.valid()) {
738 Log.e(Config.LOGTAG, "encountered invalid iq from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
739 return;
740 }
741 if (packet instanceof JinglePacket) {
742 if (this.jingleListener != null) {
743 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
744 }
745 } else {
746 OnIqPacketReceived callback = null;
747 synchronized (this.packetCallbacks) {
748 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
749 if (packetCallbackDuple != null) {
750 // Packets to the server should have responses from the server
751 if (packetCallbackDuple.first.toServer(account)) {
752 if (packet.fromServer(account)) {
753 callback = packetCallbackDuple.second;
754 packetCallbacks.remove(packet.getId());
755 } else {
756 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
757 }
758 } else {
759 if (packet.getFrom() != null && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
760 callback = packetCallbackDuple.second;
761 packetCallbacks.remove(packet.getId());
762 } else {
763 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
764 }
765 }
766 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
767 callback = this.unregisteredIqListener;
768 }
769 }
770 if (callback != null) {
771 try {
772 callback.onIqPacketReceived(account, packet);
773 } catch (StateChangingError error) {
774 throw new StateChangingException(error.state);
775 }
776 }
777 }
778 }
779
780 private void processMessage(final Tag currentTag) throws IOException {
781 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
782 if (!packet.valid()) {
783 Log.e(Config.LOGTAG, "encountered invalid message from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
784 return;
785 }
786 this.messageListener.onMessagePacketReceived(account, packet);
787 }
788
789 private void processPresence(final Tag currentTag) throws IOException {
790 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
791 if (!packet.valid()) {
792 Log.e(Config.LOGTAG, "encountered invalid presence from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
793 return;
794 }
795 this.presenceListener.onPresencePacketReceived(account, packet);
796 }
797
798 private void sendStartTLS() throws IOException {
799 final Tag startTLS = Tag.empty("starttls");
800 startTLS.setAttribute("xmlns", Namespace.TLS);
801 tagWriter.writeTag(startTLS);
802 }
803
804 private void switchOverToTls() throws XmlPullParserException, IOException {
805 tagReader.readTag();
806 final Socket socket = this.socket;
807 final SSLSocket sslSocket = upgradeSocketToTls(socket);
808 tagReader.setInputStream(sslSocket.getInputStream());
809 tagWriter.setOutputStream(sslSocket.getOutputStream());
810 sendStartStream();
811 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
812 features.encryptionEnabled = true;
813 final Tag tag = tagReader.readTag();
814 if (tag != null && tag.isStart("stream")) {
815 SSLSocketHelper.log(account, sslSocket);
816 processStream();
817 } else {
818 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
819 }
820 sslSocket.close();
821 }
822
823 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
824 final SSLSocketFactory sslSocketFactory;
825 try {
826 sslSocketFactory = getSSLSocketFactory();
827 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
828 throw new StateChangingException(Account.State.TLS_ERROR);
829 }
830 final InetAddress address = socket.getInetAddress();
831 final SSLSocket sslSocket = (SSLSocket) sslSocketFactory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
832 SSLSocketHelper.setSecurity(sslSocket);
833 SSLSocketHelper.setHostname(sslSocket, IDN.toASCII(account.getServer()));
834 SSLSocketHelper.setApplicationProtocol(sslSocket, "xmpp-client");
835 final XmppDomainVerifier xmppDomainVerifier = new XmppDomainVerifier();
836 try {
837 if (!xmppDomainVerifier.verify(account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
838 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate domain verification failed");
839 FileBackend.close(sslSocket);
840 throw new StateChangingException(Account.State.TLS_ERROR_DOMAIN);
841 }
842 } catch (final SSLPeerUnverifiedException e) {
843 FileBackend.close(sslSocket);
844 throw new StateChangingException(Account.State.TLS_ERROR);
845 }
846 return sslSocket;
847 }
848
849 private void processStreamFeatures(final Tag currentTag) throws IOException {
850 this.streamFeatures = tagReader.readElement(currentTag);
851 final boolean isSecure = features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
852 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
853 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
854 sendStartTLS();
855 } else if (this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
856 if (isSecure) {
857 register();
858 } else {
859 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find STARTTLS for registration process " + XmlHelper.printElementNames(this.streamFeatures));
860 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
861 }
862 } else if (!this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
863 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
864 } else if (this.streamFeatures.hasChild("mechanisms") && shouldAuthenticate && isSecure) {
865 authenticate();
866 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
867 if (Config.EXTENDED_SM_LOGGING) {
868 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resuming after stanza #" + stanzasReceived);
869 }
870 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
871 this.mSmCatchupMessageCounter.set(0);
872 this.mWaitingForSmCatchup.set(true);
873 this.tagWriter.writeStanzaAsync(resume);
874 } else if (needsBinding) {
875 if (this.streamFeatures.hasChild("bind") && isSecure) {
876 sendBindRequest();
877 } else {
878 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find bind feature " + XmlHelper.printElementNames(this.streamFeatures));
879 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
880 }
881 }
882 }
883
884 private void authenticate() throws IOException {
885 final List<String> mechanisms = extractMechanisms(streamFeatures.findChild("mechanisms"));
886 final Element auth = new Element("auth", Namespace.SASL);
887 if (mechanisms.contains(External.MECHANISM) && account.getPrivateKeyAlias() != null) {
888 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
889 } else if (mechanisms.contains(ScramSha512.MECHANISM)) {
890 saslMechanism = new ScramSha512(tagWriter, account, mXmppConnectionService.getRNG());
891 } else if (mechanisms.contains(ScramSha256.MECHANISM)) {
892 saslMechanism = new ScramSha256(tagWriter, account, mXmppConnectionService.getRNG());
893 } else if (mechanisms.contains(ScramSha1.MECHANISM)) {
894 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
895 } else if (mechanisms.contains(Plain.MECHANISM) && !account.getJid().getDomain().toEscapedString().equals("nimbuzz.com")) {
896 saslMechanism = new Plain(tagWriter, account);
897 } else if (mechanisms.contains(DigestMd5.MECHANISM)) {
898 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
899 } else if (mechanisms.contains(Anonymous.MECHANISM)) {
900 saslMechanism = new Anonymous(tagWriter, account, mXmppConnectionService.getRNG());
901 }
902 if (saslMechanism != null) {
903 final int pinnedMechanism = account.getKeyAsInt(Account.PINNED_MECHANISM_KEY, -1);
904 if (pinnedMechanism > saslMechanism.getPriority()) {
905 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
906 " has lower priority (" + saslMechanism.getPriority() +
907 ") than pinned priority (" + pinnedMechanism +
908 "). Possible downgrade attack?");
909 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
910 }
911 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
912 auth.setAttribute("mechanism", saslMechanism.getMechanism());
913 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
914 auth.setContent(saslMechanism.getClientFirstMessage());
915 }
916 tagWriter.writeElement(auth);
917 } else {
918 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find supported SASL mechanism in " + mechanisms);
919 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
920 }
921 }
922
923 private List<String> extractMechanisms(final Element stream) {
924 final ArrayList<String> mechanisms = new ArrayList<>(stream
925 .getChildren().size());
926 for (final Element child : stream.getChildren()) {
927 mechanisms.add(child.getContent());
928 }
929 return mechanisms;
930 }
931
932
933 private void register() {
934 final String preAuth = account.getKey(Account.PRE_AUTH_REGISTRATION_TOKEN);
935 if (preAuth != null && features.invite()) {
936 final IqPacket preAuthRequest = new IqPacket(IqPacket.TYPE.SET);
937 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
938 sendUnmodifiedIqPacket(preAuthRequest, (account, response) -> {
939 if (response.getType() == IqPacket.TYPE.RESULT) {
940 sendRegistryRequest();
941 } else {
942 final String error = response.getErrorCondition();
943 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": failed to pre auth. " + error);
944 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
945 }
946 }, true);
947 } else {
948 sendRegistryRequest();
949 }
950 }
951
952 private void sendRegistryRequest() {
953 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
954 register.query(Namespace.REGISTER);
955 register.setTo(account.getDomain());
956 sendUnmodifiedIqPacket(register, (account, packet) -> {
957 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
958 return;
959 }
960 if (packet.getType() == IqPacket.TYPE.ERROR) {
961 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
962 }
963 final Element query = packet.query(Namespace.REGISTER);
964 if (query.hasChild("username") && (query.hasChild("password"))) {
965 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
966 final Element username = new Element("username").setContent(account.getUsername());
967 final Element password = new Element("password").setContent(account.getPassword());
968 register1.query(Namespace.REGISTER).addChild(username);
969 register1.query().addChild(password);
970 register1.setFrom(account.getJid().asBareJid());
971 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
972 } else if (query.hasChild("x", Namespace.DATA)) {
973 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
974 final Element blob = query.findChild("data", "urn:xmpp:bob");
975 final String id = packet.getId();
976 InputStream is;
977 if (blob != null) {
978 try {
979 final String base64Blob = blob.getContent();
980 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
981 is = new ByteArrayInputStream(strBlob);
982 } catch (Exception e) {
983 is = null;
984 }
985 } else {
986 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
987 try {
988 final String url = data.getValue("url");
989 final String fallbackUrl = data.getValue("captcha-fallback-url");
990 if (url != null) {
991 is = HttpConnectionManager.open(url, useTor);
992 } else if (fallbackUrl != null) {
993 is = HttpConnectionManager.open(fallbackUrl, useTor);
994 } else {
995 is = null;
996 }
997 } catch (final IOException e) {
998 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to fetch captcha", e);
999 is = null;
1000 }
1001 }
1002
1003 if (is != null) {
1004 Bitmap captcha = BitmapFactory.decodeStream(is);
1005 try {
1006 if (mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha)) {
1007 return;
1008 }
1009 } catch (Exception e) {
1010 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1011 }
1012 }
1013 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1014 } else if (query.hasChild("instructions") || query.hasChild("x", Namespace.OOB)) {
1015 final String instructions = query.findChildContent("instructions");
1016 final Element oob = query.findChild("x", Namespace.OOB);
1017 final String url = oob == null ? null : oob.findChildContent("url");
1018 if (url != null) {
1019 setAccountCreationFailed(url);
1020 } else if (instructions != null) {
1021 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
1022 if (matcher.find()) {
1023 setAccountCreationFailed(instructions.substring(matcher.start(), matcher.end()));
1024 }
1025 }
1026 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1027 }
1028 }, true);
1029 }
1030
1031 private void setAccountCreationFailed(final String url) {
1032 final HttpUrl httpUrl = url == null ? null : HttpUrl.parse(url);
1033 if (httpUrl != null && httpUrl.isHttps()) {
1034 this.redirectionUrl = httpUrl;
1035 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1036 }
1037 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1038 }
1039
1040 public HttpUrl getRedirectionUrl() {
1041 return this.redirectionUrl;
1042 }
1043
1044 public void resetEverything() {
1045 resetAttemptCount(true);
1046 resetStreamId();
1047 clearIqCallbacks();
1048 this.stanzasSent = 0;
1049 mStanzaQueue.clear();
1050 this.redirectionUrl = null;
1051 synchronized (this.disco) {
1052 disco.clear();
1053 }
1054 synchronized (this.commands) {
1055 this.commands.clear();
1056 }
1057 }
1058
1059 private void sendBindRequest() {
1060 try {
1061 mXmppConnectionService.restoredFromDatabaseLatch.await();
1062 } catch (InterruptedException e) {
1063 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while waiting for DB restore during bind");
1064 return;
1065 }
1066 clearIqCallbacks();
1067 if (account.getJid().isBareJid()) {
1068 account.setResource(this.createNewResource());
1069 } else {
1070 fixResource(mXmppConnectionService, account);
1071 }
1072 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1073 final String resource = Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1074 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1075 this.sendUnmodifiedIqPacket(iq, (account, packet) -> {
1076 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1077 return;
1078 }
1079 final Element bind = packet.findChild("bind");
1080 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1081 isBound = true;
1082 final Element jid = bind.findChild("jid");
1083 if (jid != null && jid.getContent() != null) {
1084 try {
1085 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1086 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1087 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server tried to re-assign domain to " + assignedJid.getDomain());
1088 throw new StateChangingError(Account.State.BIND_FAILURE);
1089 }
1090 if (account.setJid(assignedJid)) {
1091 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": jid changed during bind. updating database");
1092 mXmppConnectionService.databaseBackend.updateAccount(account);
1093 }
1094 if (streamFeatures.hasChild("session")
1095 && !streamFeatures.findChild("session").hasChild("optional")) {
1096 sendStartSession();
1097 } else {
1098 sendPostBindInitialization();
1099 }
1100 return;
1101 } catch (final IllegalArgumentException e) {
1102 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server reported invalid jid (" + jid.getContent() + ") on bind");
1103 }
1104 } else {
1105 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure. (no jid)");
1106 }
1107 } else {
1108 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet.toString());
1109 }
1110 final Element error = packet.findChild("error");
1111 if (packet.getType() == IqPacket.TYPE.ERROR && error != null && error.hasChild("conflict")) {
1112 account.setResource(createNewResource());
1113 }
1114 throw new StateChangingError(Account.State.BIND_FAILURE);
1115 }, true);
1116 }
1117
1118 private void clearIqCallbacks() {
1119 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1120 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1121 synchronized (this.packetCallbacks) {
1122 if (this.packetCallbacks.size() == 0) {
1123 return;
1124 }
1125 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": clearing " + this.packetCallbacks.size() + " iq callbacks");
1126 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
1127 while (iterator.hasNext()) {
1128 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1129 callbacks.add(entry.second);
1130 iterator.remove();
1131 }
1132 }
1133 for (OnIqPacketReceived callback : callbacks) {
1134 try {
1135 callback.onIqPacketReceived(account, failurePacket);
1136 } catch (StateChangingError error) {
1137 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": caught StateChangingError(" + error.state.toString() + ") while clearing callbacks");
1138 //ignore
1139 }
1140 }
1141 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
1142 }
1143
1144 public void sendDiscoTimeout() {
1145 if (mWaitForDisco.compareAndSet(true, false)) {
1146 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1147 finalizeBind();
1148 }
1149 }
1150
1151 private void sendStartSession() {
1152 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": sending legacy session to outdated server");
1153 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1154 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1155 this.sendUnmodifiedIqPacket(startSession, (account, packet) -> {
1156 if (packet.getType() == IqPacket.TYPE.RESULT) {
1157 sendPostBindInitialization();
1158 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1159 throw new StateChangingError(Account.State.SESSION_FAILURE);
1160 }
1161 }, true);
1162 }
1163
1164 private void sendPostBindInitialization() {
1165 smVersion = 0;
1166 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
1167 smVersion = 3;
1168 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
1169 smVersion = 2;
1170 }
1171 if (smVersion != 0) {
1172 synchronized (this.mStanzaQueue) {
1173 final EnablePacket enable = new EnablePacket(smVersion);
1174 tagWriter.writeStanzaAsync(enable);
1175 stanzasSent = 0;
1176 mStanzaQueue.clear();
1177 }
1178 }
1179 features.carbonsEnabled = false;
1180 features.blockListRequested = false;
1181 synchronized (this.disco) {
1182 this.disco.clear();
1183 }
1184 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1185 mPendingServiceDiscoveries.set(0);
1186 if (smVersion == 0 || Patches.DISCO_EXCEPTIONS.contains(account.getJid().getDomain().toEscapedString())) {
1187 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": do not wait for service discovery");
1188 mWaitForDisco.set(false);
1189 } else {
1190 mWaitForDisco.set(true);
1191 }
1192 lastDiscoStarted = SystemClock.elapsedRealtime();
1193 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1194 Element caps = streamFeatures.findChild("c");
1195 final String hash = caps == null ? null : caps.getAttribute("hash");
1196 final String ver = caps == null ? null : caps.getAttribute("ver");
1197 ServiceDiscoveryResult discoveryResult = null;
1198 if (hash != null && ver != null) {
1199 discoveryResult = mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1200 }
1201 final boolean requestDiscoItemsFirst = !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1202 if (requestDiscoItemsFirst) {
1203 sendServiceDiscoveryItems(account.getDomain());
1204 }
1205 if (discoveryResult == null) {
1206 sendServiceDiscoveryInfo(account.getDomain());
1207 } else {
1208 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1209 disco.put(account.getDomain(), discoveryResult);
1210 }
1211 discoverMamPreferences();
1212 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1213 if (!requestDiscoItemsFirst) {
1214 sendServiceDiscoveryItems(account.getDomain());
1215 }
1216
1217 if (!mWaitForDisco.get()) {
1218 finalizeBind();
1219 }
1220 this.lastSessionStarted = SystemClock.elapsedRealtime();
1221 }
1222
1223 private void sendServiceDiscoveryInfo(final Jid jid) {
1224 mPendingServiceDiscoveries.incrementAndGet();
1225 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1226 iq.setTo(jid);
1227 iq.query("http://jabber.org/protocol/disco#info");
1228 this.sendIqPacket(iq, (account, packet) -> {
1229 if (packet.getType() == IqPacket.TYPE.RESULT) {
1230 boolean advancedStreamFeaturesLoaded;
1231 synchronized (XmppConnection.this.disco) {
1232 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1233 if (jid.equals(account.getDomain())) {
1234 mXmppConnectionService.databaseBackend.insertDiscoveryResult(result);
1235 }
1236 disco.put(jid, result);
1237 advancedStreamFeaturesLoaded = disco.containsKey(account.getDomain())
1238 && disco.containsKey(account.getJid().asBareJid());
1239 }
1240 if (advancedStreamFeaturesLoaded && (jid.equals(account.getDomain()) || jid.equals(account.getJid().asBareJid()))) {
1241 enableAdvancedStreamFeatures();
1242 }
1243 } else if (packet.getType() == IqPacket.TYPE.ERROR) {
1244 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco info for " + jid.toString());
1245 final boolean serverOrAccount = jid.equals(account.getDomain()) || jid.equals(account.getJid().asBareJid());
1246 final boolean advancedStreamFeaturesLoaded;
1247 if (serverOrAccount) {
1248 synchronized (XmppConnection.this.disco) {
1249 disco.put(jid, ServiceDiscoveryResult.empty());
1250 advancedStreamFeaturesLoaded = disco.containsKey(account.getDomain()) && disco.containsKey(account.getJid().asBareJid());
1251 }
1252 } else {
1253 advancedStreamFeaturesLoaded = false;
1254 }
1255 if (advancedStreamFeaturesLoaded) {
1256 enableAdvancedStreamFeatures();
1257 }
1258 }
1259 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1260 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1261 && mWaitForDisco.compareAndSet(true, false)) {
1262 finalizeBind();
1263 }
1264 }
1265 });
1266 }
1267
1268 private void discoverMamPreferences() {
1269 IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1270 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1271 sendIqPacket(request, (account, response) -> {
1272 if (response.getType() == IqPacket.TYPE.RESULT) {
1273 Element prefs = response.findChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1274 isMamPreferenceAlways = "always".equals(prefs == null ? null : prefs.getAttribute("default"));
1275 }
1276 });
1277 }
1278
1279 private void discoverCommands() {
1280 final IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1281 request.setTo(account.getDomain());
1282 request.addChild("query", Namespace.DISCO_ITEMS).setAttribute("node", Namespace.COMMANDS);
1283 sendIqPacket(request, (account, response) -> {
1284 if (response.getType() == IqPacket.TYPE.RESULT) {
1285 final Element query = response.findChild("query", Namespace.DISCO_ITEMS);
1286 if (query == null) {
1287 return;
1288 }
1289 final HashMap<String, Jid> commands = new HashMap<>();
1290 for (final Element child : query.getChildren()) {
1291 if ("item".equals(child.getName())) {
1292 final String node = child.getAttribute("node");
1293 final Jid jid = child.getAttributeAsJid("jid");
1294 if (node != null && jid != null) {
1295 commands.put(node, jid);
1296 }
1297 }
1298 }
1299 Log.d(Config.LOGTAG, commands.toString());
1300 synchronized (this.commands) {
1301 this.commands.clear();
1302 this.commands.putAll(commands);
1303 }
1304 }
1305 });
1306 }
1307
1308 public boolean isMamPreferenceAlways() {
1309 return isMamPreferenceAlways;
1310 }
1311
1312 private void finalizeBind() {
1313 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
1314 if (bindListener != null) {
1315 bindListener.onBind(account);
1316 }
1317 changeStatus(Account.State.ONLINE);
1318 }
1319
1320 private void enableAdvancedStreamFeatures() {
1321 if (getFeatures().blocking() && !features.blockListRequested) {
1322 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
1323 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1324 }
1325 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1326 listener.onAdvancedStreamFeaturesAvailable(account);
1327 }
1328 if (getFeatures().carbons() && !features.carbonsEnabled) {
1329 sendEnableCarbons();
1330 }
1331 if (getFeatures().commands()) {
1332 discoverCommands();
1333 }
1334 }
1335
1336 private void sendServiceDiscoveryItems(final Jid server) {
1337 mPendingServiceDiscoveries.incrementAndGet();
1338 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1339 iq.setTo(server.getDomain());
1340 iq.query("http://jabber.org/protocol/disco#items");
1341 this.sendIqPacket(iq, (account, packet) -> {
1342 if (packet.getType() == IqPacket.TYPE.RESULT) {
1343 final HashSet<Jid> items = new HashSet<>();
1344 final List<Element> elements = packet.query().getChildren();
1345 for (final Element element : elements) {
1346 if (element.getName().equals("item")) {
1347 final Jid jid = InvalidJid.getNullForInvalid(element.getAttributeAsJid("jid"));
1348 if (jid != null && !jid.equals(account.getDomain())) {
1349 items.add(jid);
1350 }
1351 }
1352 }
1353 for (Jid jid : items) {
1354 sendServiceDiscoveryInfo(jid);
1355 }
1356 } else {
1357 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco items of " + server);
1358 }
1359 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1360 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1361 && mWaitForDisco.compareAndSet(true, false)) {
1362 finalizeBind();
1363 }
1364 }
1365 });
1366 }
1367
1368 private void sendEnableCarbons() {
1369 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1370 iq.addChild("enable", "urn:xmpp:carbons:2");
1371 this.sendIqPacket(iq, (account, packet) -> {
1372 if (!packet.hasChild("error")) {
1373 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1374 + ": successfully enabled carbons");
1375 features.carbonsEnabled = true;
1376 } else {
1377 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1378 + ": error enableing carbons " + packet.toString());
1379 }
1380 });
1381 }
1382
1383 private void processStreamError(final Tag currentTag) throws IOException {
1384 final Element streamError = tagReader.readElement(currentTag);
1385 if (streamError == null) {
1386 return;
1387 }
1388 if (streamError.hasChild("conflict")) {
1389 account.setResource(createNewResource());
1390 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": switching resource due to conflict (" + account.getResource() + ")");
1391 throw new IOException();
1392 } else if (streamError.hasChild("host-unknown")) {
1393 throw new StateChangingException(Account.State.HOST_UNKNOWN);
1394 } else if (streamError.hasChild("policy-violation")) {
1395 this.lastConnect = SystemClock.elapsedRealtime();
1396 final String text = streamError.findChildContent("text");
1397 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": policy violation. " + text);
1398 failPendingMessages(text);
1399 throw new StateChangingException(Account.State.POLICY_VIOLATION);
1400 } else {
1401 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError.toString());
1402 throw new StateChangingException(Account.State.STREAM_ERROR);
1403 }
1404 }
1405
1406 private void failPendingMessages(final String error) {
1407 synchronized (this.mStanzaQueue) {
1408 for (int i = 0; i < mStanzaQueue.size(); ++i) {
1409 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
1410 if (stanza instanceof MessagePacket) {
1411 final MessagePacket packet = (MessagePacket) stanza;
1412 final String id = packet.getId();
1413 final Jid to = packet.getTo();
1414 mXmppConnectionService.markMessage(account,
1415 to.asBareJid(),
1416 id,
1417 Message.STATUS_SEND_FAILED,
1418 error);
1419 }
1420 }
1421 }
1422 }
1423
1424 private void sendStartStream() throws IOException {
1425 final Tag stream = Tag.start("stream:stream");
1426 stream.setAttribute("to", account.getServer());
1427 stream.setAttribute("version", "1.0");
1428 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
1429 stream.setAttribute("xmlns", "jabber:client");
1430 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1431 tagWriter.writeTag(stream);
1432 }
1433
1434 private String createNewResource() {
1435 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
1436 }
1437
1438 private String nextRandomId() {
1439 return nextRandomId(false);
1440 }
1441
1442 private String nextRandomId(boolean s) {
1443 return CryptoHelper.random(s ? 3 : 9, mXmppConnectionService.getRNG());
1444 }
1445
1446 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1447 packet.setFrom(account.getJid());
1448 return this.sendUnmodifiedIqPacket(packet, callback, false);
1449 }
1450
1451 public synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
1452 if (packet.getId() == null) {
1453 packet.setAttribute("id", nextRandomId());
1454 }
1455 if (callback != null) {
1456 synchronized (this.packetCallbacks) {
1457 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1458 }
1459 }
1460 this.sendPacket(packet, force);
1461 return packet.getId();
1462 }
1463
1464 public void sendMessagePacket(final MessagePacket packet) {
1465 this.sendPacket(packet);
1466 }
1467
1468 public void sendPresencePacket(final PresencePacket packet) {
1469 this.sendPacket(packet);
1470 }
1471
1472 private synchronized void sendPacket(final AbstractStanza packet) {
1473 sendPacket(packet, false);
1474 }
1475
1476 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
1477 if (stanzasSent == Integer.MAX_VALUE) {
1478 resetStreamId();
1479 disconnect(true);
1480 return;
1481 }
1482 synchronized (this.mStanzaQueue) {
1483 if (force || isBound) {
1484 tagWriter.writeStanzaAsync(packet);
1485 } else {
1486 Log.d(Config.LOGTAG, account.getJid().asBareJid() + " do not write stanza to unbound stream " + packet.toString());
1487 }
1488 if (packet instanceof AbstractAcknowledgeableStanza) {
1489 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1490
1491 if (this.mStanzaQueue.size() != 0) {
1492 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
1493 if (currentHighestKey != stanzasSent) {
1494 throw new AssertionError("Stanza count messed up");
1495 }
1496 }
1497
1498 ++stanzasSent;
1499 this.mStanzaQueue.append(stanzasSent, stanza);
1500 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
1501 if (Config.EXTENDED_SM_LOGGING) {
1502 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1503 }
1504 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1505 }
1506 }
1507 }
1508 }
1509
1510 public void sendPing() {
1511 if (!r()) {
1512 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1513 iq.setFrom(account.getJid());
1514 iq.addChild("ping", Namespace.PING);
1515 this.sendIqPacket(iq, null);
1516 }
1517 this.lastPingSent = SystemClock.elapsedRealtime();
1518 }
1519
1520 public void setOnMessagePacketReceivedListener(
1521 final OnMessagePacketReceived listener) {
1522 this.messageListener = listener;
1523 }
1524
1525 public void setOnUnregisteredIqPacketReceivedListener(
1526 final OnIqPacketReceived listener) {
1527 this.unregisteredIqListener = listener;
1528 }
1529
1530 public void setOnPresencePacketReceivedListener(
1531 final OnPresencePacketReceived listener) {
1532 this.presenceListener = listener;
1533 }
1534
1535 public void setOnJinglePacketReceivedListener(
1536 final OnJinglePacketReceived listener) {
1537 this.jingleListener = listener;
1538 }
1539
1540 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1541 this.statusListener = listener;
1542 }
1543
1544 public void setOnBindListener(final OnBindListener listener) {
1545 this.bindListener = listener;
1546 }
1547
1548 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1549 this.acknowledgedListener = listener;
1550 }
1551
1552 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1553 this.advancedStreamFeaturesLoadedListeners.add(listener);
1554 }
1555
1556 private void forceCloseSocket() {
1557 FileBackend.close(this.socket);
1558 FileBackend.close(this.tagReader);
1559 }
1560
1561 public void interrupt() {
1562 if (this.mThread != null) {
1563 this.mThread.interrupt();
1564 }
1565 }
1566
1567 public void disconnect(final boolean force) {
1568 interrupt();
1569 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
1570 if (force) {
1571 forceCloseSocket();
1572 } else {
1573 final TagWriter currentTagWriter = this.tagWriter;
1574 if (currentTagWriter.isActive()) {
1575 currentTagWriter.finish();
1576 final Socket currentSocket = this.socket;
1577 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
1578 try {
1579 currentTagWriter.await(1, TimeUnit.SECONDS);
1580 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
1581 currentTagWriter.writeTag(Tag.end("stream:stream"));
1582 if (streamCountDownLatch != null) {
1583 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
1584 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote ended stream");
1585 } else {
1586 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote has not closed socket. force closing");
1587 }
1588 }
1589 } catch (InterruptedException e) {
1590 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while gracefully closing stream");
1591 } catch (final IOException e) {
1592 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": io exception during disconnect (" + e.getMessage() + ")");
1593 } finally {
1594 FileBackend.close(currentSocket);
1595 }
1596 } else {
1597 forceCloseSocket();
1598 }
1599 }
1600 }
1601
1602 private void resetStreamId() {
1603 this.streamId = null;
1604 }
1605
1606 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
1607 synchronized (this.disco) {
1608 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
1609 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
1610 if (cursor.getValue().getFeatures().contains(feature)) {
1611 items.add(cursor);
1612 }
1613 }
1614 return items;
1615 }
1616 }
1617
1618 public Jid findDiscoItemByFeature(final String feature) {
1619 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
1620 if (items.size() >= 1) {
1621 return items.get(0).getKey();
1622 }
1623 return null;
1624 }
1625
1626 public boolean r() {
1627 if (getFeatures().sm()) {
1628 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1629 return true;
1630 } else {
1631 return false;
1632 }
1633 }
1634
1635 public List<String> getMucServersWithholdAccount() {
1636 final List<String> servers = getMucServers();
1637 servers.remove(account.getDomain().toEscapedString());
1638 return servers;
1639 }
1640
1641 public List<String> getMucServers() {
1642 List<String> servers = new ArrayList<>();
1643 synchronized (this.disco) {
1644 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
1645 final ServiceDiscoveryResult value = cursor.getValue();
1646 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
1647 && value.hasIdentity("conference", "text")
1648 && !value.getFeatures().contains("jabber:iq:gateway")
1649 && !value.hasIdentity("conference", "irc")) {
1650 servers.add(cursor.getKey().toString());
1651 }
1652 }
1653 }
1654 return servers;
1655 }
1656
1657 public String getMucServer() {
1658 List<String> servers = getMucServers();
1659 return servers.size() > 0 ? servers.get(0) : null;
1660 }
1661
1662 public int getTimeToNextAttempt() {
1663 final int additionalTime = account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
1664 final int interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
1665 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1666 return interval - secondsSinceLast;
1667 }
1668
1669 public int getAttempt() {
1670 return this.attempt;
1671 }
1672
1673 public Features getFeatures() {
1674 return this.features;
1675 }
1676
1677 public long getLastSessionEstablished() {
1678 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1679 return System.currentTimeMillis() - diff;
1680 }
1681
1682 public long getLastConnect() {
1683 return this.lastConnect;
1684 }
1685
1686 public long getLastPingSent() {
1687 return this.lastPingSent;
1688 }
1689
1690 public long getLastDiscoStarted() {
1691 return this.lastDiscoStarted;
1692 }
1693
1694 public long getLastPacketReceived() {
1695 return this.lastPacketReceived;
1696 }
1697
1698 public void sendActive() {
1699 this.sendPacket(new ActivePacket());
1700 }
1701
1702 public void sendInactive() {
1703 this.sendPacket(new InactivePacket());
1704 }
1705
1706 public void resetAttemptCount(boolean resetConnectTime) {
1707 this.attempt = 0;
1708 if (resetConnectTime) {
1709 this.lastConnect = 0;
1710 }
1711 }
1712
1713 public void setInteractive(boolean interactive) {
1714 this.mInteractive = interactive;
1715 }
1716
1717 public Identity getServerIdentity() {
1718 synchronized (this.disco) {
1719 ServiceDiscoveryResult result = disco.get(account.getJid().getDomain());
1720 if (result == null) {
1721 return Identity.UNKNOWN;
1722 }
1723 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
1724 if (id.getType().equals("im") && id.getCategory().equals("server") && id.getName() != null) {
1725 switch (id.getName()) {
1726 case "Prosody":
1727 return Identity.PROSODY;
1728 case "ejabberd":
1729 return Identity.EJABBERD;
1730 case "Slack-XMPP":
1731 return Identity.SLACK;
1732 }
1733 }
1734 }
1735 }
1736 return Identity.UNKNOWN;
1737 }
1738
1739 private IqGenerator getIqGenerator() {
1740 return mXmppConnectionService.getIqGenerator();
1741 }
1742
1743 public enum Identity {
1744 FACEBOOK,
1745 SLACK,
1746 EJABBERD,
1747 PROSODY,
1748 NIMBUZZ,
1749 UNKNOWN
1750 }
1751
1752 private class MyKeyManager implements X509KeyManager {
1753 @Override
1754 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
1755 return account.getPrivateKeyAlias();
1756 }
1757
1758 @Override
1759 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
1760 return null;
1761 }
1762
1763 @Override
1764 public X509Certificate[] getCertificateChain(String alias) {
1765 Log.d(Config.LOGTAG, "getting certificate chain");
1766 try {
1767 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
1768 } catch (Exception e) {
1769 Log.d(Config.LOGTAG, e.getMessage());
1770 return new X509Certificate[0];
1771 }
1772 }
1773
1774 @Override
1775 public String[] getClientAliases(String s, Principal[] principals) {
1776 final String alias = account.getPrivateKeyAlias();
1777 return alias != null ? new String[]{alias} : new String[0];
1778 }
1779
1780 @Override
1781 public String[] getServerAliases(String s, Principal[] principals) {
1782 return new String[0];
1783 }
1784
1785 @Override
1786 public PrivateKey getPrivateKey(String alias) {
1787 try {
1788 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
1789 } catch (Exception e) {
1790 return null;
1791 }
1792 }
1793 }
1794
1795 private static class StateChangingError extends Error {
1796 private final Account.State state;
1797
1798 public StateChangingError(Account.State state) {
1799 this.state = state;
1800 }
1801 }
1802
1803 private static class StateChangingException extends IOException {
1804 private final Account.State state;
1805
1806 public StateChangingException(Account.State state) {
1807 this.state = state;
1808 }
1809 }
1810
1811 public class Features {
1812 XmppConnection connection;
1813 private boolean carbonsEnabled = false;
1814 private boolean encryptionEnabled = false;
1815 private boolean blockListRequested = false;
1816
1817 public Features(final XmppConnection connection) {
1818 this.connection = connection;
1819 }
1820
1821 private boolean hasDiscoFeature(final Jid server, final String feature) {
1822 synchronized (XmppConnection.this.disco) {
1823 return connection.disco.containsKey(server) &&
1824 connection.disco.get(server).getFeatures().contains(feature);
1825 }
1826 }
1827
1828 public boolean carbons() {
1829 return hasDiscoFeature(account.getDomain(), "urn:xmpp:carbons:2");
1830 }
1831
1832 public boolean commands() {
1833 return hasDiscoFeature(account.getDomain(), Namespace.COMMANDS);
1834 }
1835
1836 public boolean easyOnboardingInvites() {
1837 synchronized (commands) {
1838 return commands.containsKey(Namespace.EASY_ONBOARDING_INVITE);
1839 }
1840 }
1841
1842 public boolean bookmarksConversion() {
1843 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION) && pepPublishOptions();
1844 }
1845
1846 public boolean avatarConversion() {
1847 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.AVATAR_CONVERSION) && pepPublishOptions();
1848 }
1849
1850 public boolean blocking() {
1851 return hasDiscoFeature(account.getDomain(), Namespace.BLOCKING);
1852 }
1853
1854 public boolean spamReporting() {
1855 return hasDiscoFeature(account.getDomain(), "urn:xmpp:reporting:reason:spam:0");
1856 }
1857
1858 public boolean flexibleOfflineMessageRetrieval() {
1859 return hasDiscoFeature(account.getDomain(), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
1860 }
1861
1862 public boolean register() {
1863 return hasDiscoFeature(account.getDomain(), Namespace.REGISTER);
1864 }
1865
1866 public boolean invite() {
1867 return connection.streamFeatures != null && connection.streamFeatures.hasChild("register", Namespace.INVITE);
1868 }
1869
1870 public boolean sm() {
1871 return streamId != null
1872 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1873 }
1874
1875 public boolean csi() {
1876 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1877 }
1878
1879 public boolean pep() {
1880 synchronized (XmppConnection.this.disco) {
1881 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1882 return info != null && info.hasIdentity("pubsub", "pep");
1883 }
1884 }
1885
1886 public boolean pepPersistent() {
1887 synchronized (XmppConnection.this.disco) {
1888 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1889 return info != null && info.getFeatures().contains("http://jabber.org/protocol/pubsub#persistent-items");
1890 }
1891 }
1892
1893 public boolean pepPublishOptions() {
1894 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
1895 }
1896
1897 public boolean pepOmemoWhitelisted() {
1898 return hasDiscoFeature(account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
1899 }
1900
1901 public boolean mam() {
1902 return MessageArchiveService.Version.has(getAccountFeatures());
1903 }
1904
1905 public List<String> getAccountFeatures() {
1906 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
1907 return result == null ? Collections.emptyList() : result.getFeatures();
1908 }
1909
1910 public boolean push() {
1911 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
1912 || hasDiscoFeature(account.getDomain(), Namespace.PUSH);
1913 }
1914
1915 public boolean rosterVersioning() {
1916 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1917 }
1918
1919 public void setBlockListRequested(boolean value) {
1920 this.blockListRequested = value;
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}