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 org.xmlpull.v1.XmlPullParserException;
16
17import java.io.ByteArrayInputStream;
18import java.io.IOException;
19import java.io.InputStream;
20import java.net.ConnectException;
21import java.net.IDN;
22import java.net.InetAddress;
23import java.net.InetSocketAddress;
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;
104import okhttp3.HttpUrl;
105
106public class XmppConnection implements Runnable {
107
108 private static final int PACKET_IQ = 0;
109 private static final int PACKET_MESSAGE = 1;
110 private static final int PACKET_PRESENCE = 2;
111 public final OnIqPacketReceived registrationResponseListener = (account, packet) -> {
112 if (packet.getType() == IqPacket.TYPE.RESULT) {
113 account.setOption(Account.OPTION_REGISTER, false);
114 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": successfully registered new account on server");
115 throw new StateChangingError(Account.State.REGISTRATION_SUCCESSFUL);
116 } else {
117 final List<String> PASSWORD_TOO_WEAK_MSGS = Arrays.asList(
118 "The password is too weak",
119 "Please use a longer password.");
120 Element error = packet.findChild("error");
121 Account.State state = Account.State.REGISTRATION_FAILED;
122 if (error != null) {
123 if (error.hasChild("conflict")) {
124 state = Account.State.REGISTRATION_CONFLICT;
125 } else if (error.hasChild("resource-constraint")
126 && "wait".equals(error.getAttribute("type"))) {
127 state = Account.State.REGISTRATION_PLEASE_WAIT;
128 } else if (error.hasChild("not-acceptable")
129 && PASSWORD_TOO_WEAK_MSGS.contains(error.findChildContent("text"))) {
130 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
131 }
132 }
133 throw new StateChangingError(state);
134 }
135 };
136 protected final Account account;
137 private final Features features = new Features(this);
138 private final HashMap<Jid, ServiceDiscoveryResult> disco = new HashMap<>();
139 private final HashMap<String, Jid> commands = new HashMap<>();
140 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
141 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
142 private final Set<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new HashSet<>();
143 private final XmppConnectionService mXmppConnectionService;
144 private Socket socket;
145 private XmlReader tagReader;
146 private TagWriter tagWriter = new TagWriter();
147 private boolean shouldAuthenticate = true;
148 private boolean inSmacksSession = false;
149 private boolean isBound = false;
150 private Element streamFeatures;
151 private String streamId = null;
152 private int smVersion = 3;
153 private int stanzasReceived = 0;
154 private int stanzasSent = 0;
155 private long lastPacketReceived = 0;
156 private long lastPingSent = 0;
157 private long lastConnect = 0;
158 private long lastSessionStarted = 0;
159 private long lastDiscoStarted = 0;
160 private boolean isMamPreferenceAlways = false;
161 private final AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
162 private final AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
163 private final AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
164 private final AtomicInteger mSmCatchupMessageCounter = new AtomicInteger(0);
165 private boolean mInteractive = false;
166 private int attempt = 0;
167 private OnPresencePacketReceived presenceListener = null;
168 private OnJinglePacketReceived jingleListener = null;
169 private OnIqPacketReceived unregisteredIqListener = null;
170 private OnMessagePacketReceived messageListener = null;
171 private OnStatusChanged statusListener = null;
172 private OnBindListener bindListener = null;
173 private OnMessageAcknowledged acknowledgedListener = null;
174 private SaslMechanism saslMechanism;
175 private HttpUrl redirectionUrl = null;
176 private String verifiedHostname = null;
177 private volatile Thread mThread;
178 private CountDownLatch mStreamCountDownLatch;
179
180
181 public XmppConnection(final Account account, final XmppConnectionService service) {
182 this.account = account;
183 this.mXmppConnectionService = service;
184 }
185
186 private static void fixResource(Context context, Account account) {
187 String resource = account.getResource();
188 int fixedPartLength = context.getString(R.string.app_name).length() + 1; //include the trailing dot
189 int randomPartLength = 4; // 3 bytes
190 if (resource != null && resource.length() > fixedPartLength + randomPartLength) {
191 if (validBase64(resource.substring(fixedPartLength, fixedPartLength + randomPartLength))) {
192 account.setResource(resource.substring(0, fixedPartLength + randomPartLength));
193 }
194 }
195 }
196
197 private static boolean validBase64(String input) {
198 try {
199 return Base64.decode(input, Base64.URL_SAFE).length == 3;
200 } catch (Throwable throwable) {
201 return false;
202 }
203 }
204
205 private void changeStatus(final Account.State nextStatus) {
206 synchronized (this) {
207 if (Thread.currentThread().isInterrupted()) {
208 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not changing status to " + nextStatus + " because thread was interrupted");
209 return;
210 }
211 if (account.getStatus() != nextStatus) {
212 if ((nextStatus == Account.State.OFFLINE)
213 && (account.getStatus() != Account.State.CONNECTING)
214 && (account.getStatus() != Account.State.ONLINE)
215 && (account.getStatus() != Account.State.DISABLED)) {
216 return;
217 }
218 if (nextStatus == Account.State.ONLINE) {
219 this.attempt = 0;
220 }
221 account.setStatus(nextStatus);
222 } else {
223 return;
224 }
225 }
226 if (statusListener != null) {
227 statusListener.onStatusChanged(account);
228 }
229 }
230
231 public Jid getJidForCommand(final String node) {
232 synchronized (this.commands) {
233 return this.commands.get(node);
234 }
235 }
236
237 public void prepareNewConnection() {
238 this.lastConnect = SystemClock.elapsedRealtime();
239 this.lastPingSent = SystemClock.elapsedRealtime();
240 this.lastDiscoStarted = Long.MAX_VALUE;
241 this.mWaitingForSmCatchup.set(false);
242 this.changeStatus(Account.State.CONNECTING);
243 }
244
245 public boolean isWaitingForSmCatchup() {
246 return mWaitingForSmCatchup.get();
247 }
248
249 public void incrementSmCatchupMessageCounter() {
250 this.mSmCatchupMessageCounter.incrementAndGet();
251 }
252
253 protected void connect() {
254 if (mXmppConnectionService.areMessagesInitialized()) {
255 mXmppConnectionService.resetSendingToWaiting(account);
256 }
257 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
258 features.encryptionEnabled = false;
259 inSmacksSession = false;
260 isBound = false;
261 this.attempt++;
262 this.verifiedHostname = null; //will be set if user entered hostname is being used or hostname was verified with dnssec
263 try {
264 Socket localSocket;
265 shouldAuthenticate = !account.isOptionSet(Account.OPTION_REGISTER);
266 this.changeStatus(Account.State.CONNECTING);
267 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
268 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
269 if (useTor) {
270 String destination;
271 if (account.getHostname().isEmpty() || account.isOnion()) {
272 destination = account.getServer();
273 } else {
274 destination = account.getHostname();
275 this.verifiedHostname = destination;
276 }
277
278 final int port = account.getPort();
279 final boolean directTls = Resolver.useDirectTls(port);
280
281 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": connect to " + destination + " via Tor. directTls=" + directTls);
282 localSocket = SocksSocketFactory.createSocketOverTor(destination, port);
283
284 if (directTls) {
285 localSocket = upgradeSocketToTls(localSocket);
286 features.encryptionEnabled = true;
287 }
288
289 try {
290 startXmpp(localSocket);
291 } catch (InterruptedException e) {
292 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
293 return;
294 } catch (Exception e) {
295 throw new IOException(e.getMessage());
296 }
297 } else {
298 final String domain = account.getServer();
299 final List<Resolver.Result> results;
300 final boolean hardcoded = extended && !account.getHostname().isEmpty();
301 if (hardcoded) {
302 results = Resolver.fromHardCoded(account.getHostname(), account.getPort());
303 } else {
304 results = Resolver.resolve(domain);
305 }
306 if (Thread.currentThread().isInterrupted()) {
307 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
308 return;
309 }
310 if (results.size() == 0) {
311 Log.e(Config.LOGTAG, account.getJid().asBareJid() + ": Resolver results were empty");
312 return;
313 }
314 final Resolver.Result storedBackupResult;
315 if (hardcoded) {
316 storedBackupResult = null;
317 } else {
318 storedBackupResult = mXmppConnectionService.databaseBackend.findResolverResult(domain);
319 if (storedBackupResult != null && !results.contains(storedBackupResult)) {
320 results.add(storedBackupResult);
321 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": loaded backup resolver result from db: " + storedBackupResult);
322 }
323 }
324 for (Iterator<Resolver.Result> iterator = results.iterator(); iterator.hasNext(); ) {
325 final Resolver.Result result = iterator.next();
326 if (Thread.currentThread().isInterrupted()) {
327 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
328 return;
329 }
330 try {
331 // if tls is true, encryption is implied and must not be started
332 features.encryptionEnabled = result.isDirectTls();
333 verifiedHostname = result.isAuthenticated() ? result.getHostname().toString() : null;
334 Log.d(Config.LOGTAG, "verified hostname " + verifiedHostname);
335 final InetSocketAddress addr;
336 if (result.getIp() != null) {
337 addr = new InetSocketAddress(result.getIp(), result.getPort());
338 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
339 + ": using values from resolver " + (result.getHostname() == null ? "" : result.getHostname().toString()
340 + "/") + result.getIp().getHostAddress() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
341 } else {
342 addr = new InetSocketAddress(IDN.toASCII(result.getHostname().toString()), result.getPort());
343 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
344 + ": using values from resolver "
345 + result.getHostname().toString() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
346 }
347
348 localSocket = new Socket();
349 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
350
351 if (features.encryptionEnabled) {
352 localSocket = upgradeSocketToTls(localSocket);
353 }
354
355 localSocket.setSoTimeout(Config.SOCKET_TIMEOUT * 1000);
356 if (startXmpp(localSocket)) {
357 localSocket.setSoTimeout(0); //reset to 0; once the connection is established we don’t want this
358 if (!hardcoded && !result.equals(storedBackupResult)) {
359 mXmppConnectionService.databaseBackend.saveResolverResult(domain, result);
360 }
361 break; // successfully connected to server that speaks xmpp
362 } else {
363 FileBackend.close(localSocket);
364 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
365 }
366 } catch (final StateChangingException e) {
367 if (!iterator.hasNext()) {
368 throw e;
369 }
370 } catch (InterruptedException e) {
371 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
372 return;
373 } catch (final Throwable e) {
374 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage() + "(" + e.getClass().getName() + ")");
375 if (!iterator.hasNext()) {
376 throw new UnknownHostException();
377 }
378 }
379 }
380 }
381 processStream();
382 } catch (final SecurityException e) {
383 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
384 } catch (final StateChangingException e) {
385 this.changeStatus(e.state);
386 } catch (final UnknownHostException | ConnectException | SocksSocketFactory.HostNotFoundException e) {
387 this.changeStatus(Account.State.SERVER_NOT_FOUND);
388 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
389 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
390 } catch (final IOException | XmlPullParserException e) {
391 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
392 this.changeStatus(Account.State.OFFLINE);
393 this.attempt = Math.max(0, this.attempt - 1);
394 } finally {
395 if (!Thread.currentThread().isInterrupted()) {
396 forceCloseSocket();
397 } else {
398 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not force closing socket because thread was interrupted");
399 }
400 }
401 }
402
403 /**
404 * Starts xmpp protocol, call after connecting to socket
405 *
406 * @return true if server returns with valid xmpp, false otherwise
407 */
408 private boolean startXmpp(Socket socket) throws Exception {
409 if (Thread.currentThread().isInterrupted()) {
410 throw new InterruptedException();
411 }
412 this.socket = socket;
413 tagReader = new XmlReader();
414 if (tagWriter != null) {
415 tagWriter.forceClose();
416 }
417 tagWriter = new TagWriter();
418 tagWriter.setOutputStream(socket.getOutputStream());
419 tagReader.setInputStream(socket.getInputStream());
420 tagWriter.beginDocument();
421 sendStartStream();
422 final Tag tag = tagReader.readTag();
423 if (Thread.currentThread().isInterrupted()) {
424 throw new InterruptedException();
425 }
426 if (socket instanceof SSLSocket) {
427 SSLSocketHelper.log(account, (SSLSocket) socket);
428 }
429 return tag != null && tag.isStart("stream");
430 }
431
432 private TlsFactoryVerifier getTlsFactoryVerifier() throws NoSuchAlgorithmException, KeyManagementException, IOException {
433 final SSLContext sc = SSLSocketHelper.getSSLContext();
434 final MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
435 final KeyManager[] keyManager;
436 if (account.getPrivateKeyAlias() != null) {
437 keyManager = new KeyManager[]{new MyKeyManager()};
438 } else {
439 keyManager = null;
440 }
441 final String domain = account.getServer();
442 sc.init(keyManager, new X509TrustManager[]{mInteractive ? trustManager.getInteractive(domain) : trustManager.getNonInteractive(domain)}, mXmppConnectionService.getRNG());
443 final SSLSocketFactory factory = sc.getSocketFactory();
444 final DomainHostnameVerifier verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier(), mInteractive);
445 return new TlsFactoryVerifier(factory, verifier);
446 }
447
448 @Override
449 public void run() {
450 synchronized (this) {
451 this.mThread = Thread.currentThread();
452 if (this.mThread.isInterrupted()) {
453 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": aborting connect because thread was interrupted");
454 return;
455 }
456 forceCloseSocket();
457 }
458 connect();
459 }
460
461 private void processStream() throws XmlPullParserException, IOException {
462 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
463 this.mStreamCountDownLatch = streamCountDownLatch;
464 Tag nextTag = tagReader.readTag();
465 while (nextTag != null && !nextTag.isEnd("stream")) {
466 if (nextTag.isStart("error")) {
467 processStreamError(nextTag);
468 } else if (nextTag.isStart("features")) {
469 processStreamFeatures(nextTag);
470 } else if (nextTag.isStart("proceed")) {
471 switchOverToTls();
472 } else if (nextTag.isStart("success")) {
473 final String challenge = tagReader.readElement(nextTag).getContent();
474 try {
475 saslMechanism.getResponse(challenge);
476 } catch (final SaslMechanism.AuthenticationException e) {
477 Log.e(Config.LOGTAG, String.valueOf(e));
478 throw new StateChangingException(Account.State.UNAUTHORIZED);
479 }
480 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": logged in");
481 account.setKey(Account.PINNED_MECHANISM_KEY,
482 String.valueOf(saslMechanism.getPriority()));
483 tagReader.reset();
484 sendStartStream();
485 final Tag tag = tagReader.readTag();
486 if (tag != null && tag.isStart("stream")) {
487 processStream();
488 } else {
489 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
490 }
491 break;
492 } else if (nextTag.isStart("failure")) {
493 final Element failure = tagReader.readElement(nextTag);
494 if (Namespace.SASL.equals(failure.getNamespace())) {
495 final String text = failure.findChildContent("text");
496 if (failure.hasChild("account-disabled") && text != null) {
497 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
498 if (matcher.find()) {
499 final HttpUrl url;
500 try {
501 url = HttpUrl.get(text.substring(matcher.start(), matcher.end()));
502 if (url.isHttps()) {
503 this.redirectionUrl = url;
504 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
505 }
506 } catch (IllegalArgumentException 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 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
664 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
665 final MessagePacket packet = (MessagePacket) stanza;
666 final String id = packet.getId();
667 final Jid to = packet.getTo();
668 if (id != null && to != null) {
669 acknowledgedMessages |= acknowledgedListener.onMessageAcknowledged(account, to, id);
670 }
671 }
672 mStanzaQueue.removeAt(i);
673 i--;
674 }
675 }
676 return acknowledgedMessages;
677 }
678
679 private @NonNull
680 Element processPacket(final Tag currentTag, final int packetType) throws IOException {
681 final Element element;
682 switch (packetType) {
683 case PACKET_IQ:
684 element = new IqPacket();
685 break;
686 case PACKET_MESSAGE:
687 element = new MessagePacket();
688 break;
689 case PACKET_PRESENCE:
690 element = new PresencePacket();
691 break;
692 default:
693 throw new AssertionError("Should never encounter invalid type");
694 }
695 element.setAttributes(currentTag.getAttributes());
696 Tag nextTag = tagReader.readTag();
697 if (nextTag == null) {
698 throw new IOException("interrupted mid tag");
699 }
700 while (!nextTag.isEnd(element.getName())) {
701 if (!nextTag.isNo()) {
702 element.addChild(tagReader.readElement(nextTag));
703 }
704 nextTag = tagReader.readTag();
705 if (nextTag == null) {
706 throw new IOException("interrupted mid tag");
707 }
708 }
709 if (stanzasReceived == Integer.MAX_VALUE) {
710 resetStreamId();
711 throw new IOException("time to restart the session. cant handle >2 billion pcks");
712 }
713 if (inSmacksSession) {
714 ++stanzasReceived;
715 } else if (features.sm()) {
716 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not counting stanza(" + element.getClass().getSimpleName() + "). Not in smacks session.");
717 }
718 lastPacketReceived = SystemClock.elapsedRealtime();
719 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
720 Log.d(Config.LOGTAG, "[background stanza] " + element);
721 }
722 if (element instanceof IqPacket
723 && (((IqPacket) element).getType() == IqPacket.TYPE.SET)
724 && element.hasChild("jingle", Namespace.JINGLE)) {
725 return JinglePacket.upgrade((IqPacket) element);
726 } else {
727 return element;
728 }
729 }
730
731 private void processIq(final Tag currentTag) throws IOException {
732 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
733 if (!packet.valid()) {
734 Log.e(Config.LOGTAG, "encountered invalid iq from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
735 return;
736 }
737 if (packet instanceof JinglePacket) {
738 if (this.jingleListener != null) {
739 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
740 }
741 } else {
742 OnIqPacketReceived callback = null;
743 synchronized (this.packetCallbacks) {
744 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
745 if (packetCallbackDuple != null) {
746 // Packets to the server should have responses from the server
747 if (packetCallbackDuple.first.toServer(account)) {
748 if (packet.fromServer(account)) {
749 callback = packetCallbackDuple.second;
750 packetCallbacks.remove(packet.getId());
751 } else {
752 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
753 }
754 } else {
755 if (packet.getFrom() != null && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
756 callback = packetCallbackDuple.second;
757 packetCallbacks.remove(packet.getId());
758 } else {
759 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
760 }
761 }
762 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
763 callback = this.unregisteredIqListener;
764 }
765 }
766 if (callback != null) {
767 try {
768 callback.onIqPacketReceived(account, packet);
769 } catch (StateChangingError error) {
770 throw new StateChangingException(error.state);
771 }
772 }
773 }
774 }
775
776 private void processMessage(final Tag currentTag) throws IOException {
777 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
778 if (!packet.valid()) {
779 Log.e(Config.LOGTAG, "encountered invalid message from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
780 return;
781 }
782 this.messageListener.onMessagePacketReceived(account, packet);
783 }
784
785 private void processPresence(final Tag currentTag) throws IOException {
786 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
787 if (!packet.valid()) {
788 Log.e(Config.LOGTAG, "encountered invalid presence from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
789 return;
790 }
791 this.presenceListener.onPresencePacketReceived(account, packet);
792 }
793
794 private void sendStartTLS() throws IOException {
795 final Tag startTLS = Tag.empty("starttls");
796 startTLS.setAttribute("xmlns", Namespace.TLS);
797 tagWriter.writeTag(startTLS);
798 }
799
800 private void switchOverToTls() throws XmlPullParserException, IOException {
801 tagReader.readTag();
802 final Socket socket = this.socket;
803 final SSLSocket sslSocket = upgradeSocketToTls(socket);
804 tagReader.setInputStream(sslSocket.getInputStream());
805 tagWriter.setOutputStream(sslSocket.getOutputStream());
806 sendStartStream();
807 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
808 features.encryptionEnabled = true;
809 final Tag tag = tagReader.readTag();
810 if (tag != null && tag.isStart("stream")) {
811 SSLSocketHelper.log(account, sslSocket);
812 processStream();
813 } else {
814 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
815 }
816 sslSocket.close();
817 }
818
819 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
820 final TlsFactoryVerifier tlsFactoryVerifier;
821 try {
822 tlsFactoryVerifier = getTlsFactoryVerifier();
823 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
824 throw new StateChangingException(Account.State.TLS_ERROR);
825 }
826 final InetAddress address = socket.getInetAddress();
827 final SSLSocket sslSocket = (SSLSocket) tlsFactoryVerifier.factory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
828 SSLSocketHelper.setSecurity(sslSocket);
829 SSLSocketHelper.setHostname(sslSocket, IDN.toASCII(account.getServer()));
830 SSLSocketHelper.setApplicationProtocol(sslSocket, "xmpp-client");
831 if (!tlsFactoryVerifier.verifier.verify(account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
832 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate verification failed");
833 FileBackend.close(sslSocket);
834 throw new StateChangingException(Account.State.TLS_ERROR);
835 }
836 return sslSocket;
837 }
838
839 private void processStreamFeatures(final Tag currentTag) throws IOException {
840 this.streamFeatures = tagReader.readElement(currentTag);
841 final boolean isSecure = features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
842 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
843 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
844 sendStartTLS();
845 } else if (this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
846 if (isSecure) {
847 register();
848 } else {
849 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find STARTTLS for registration process " + XmlHelper.printElementNames(this.streamFeatures));
850 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
851 }
852 } else if (!this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
853 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
854 } else if (this.streamFeatures.hasChild("mechanisms") && shouldAuthenticate && isSecure) {
855 authenticate();
856 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
857 if (Config.EXTENDED_SM_LOGGING) {
858 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resuming after stanza #" + stanzasReceived);
859 }
860 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
861 this.mSmCatchupMessageCounter.set(0);
862 this.mWaitingForSmCatchup.set(true);
863 this.tagWriter.writeStanzaAsync(resume);
864 } else if (needsBinding) {
865 if (this.streamFeatures.hasChild("bind") && isSecure) {
866 sendBindRequest();
867 } else {
868 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find bind feature " + XmlHelper.printElementNames(this.streamFeatures));
869 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
870 }
871 }
872 }
873
874 private void authenticate() throws IOException {
875 final List<String> mechanisms = extractMechanisms(streamFeatures.findChild("mechanisms"));
876 final Element auth = new Element("auth", Namespace.SASL);
877 if (mechanisms.contains(External.MECHANISM) && account.getPrivateKeyAlias() != null) {
878 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
879 } else if (mechanisms.contains(ScramSha512.MECHANISM)) {
880 saslMechanism = new ScramSha512(tagWriter, account, mXmppConnectionService.getRNG());
881 } else if (mechanisms.contains(ScramSha256.MECHANISM)) {
882 saslMechanism = new ScramSha256(tagWriter, account, mXmppConnectionService.getRNG());
883 } else if (mechanisms.contains(ScramSha1.MECHANISM)) {
884 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
885 } else if (mechanisms.contains(Plain.MECHANISM) && !account.getJid().getDomain().toEscapedString().equals("nimbuzz.com")) {
886 saslMechanism = new Plain(tagWriter, account);
887 } else if (mechanisms.contains(DigestMd5.MECHANISM)) {
888 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
889 } else if (mechanisms.contains(Anonymous.MECHANISM)) {
890 saslMechanism = new Anonymous(tagWriter, account, mXmppConnectionService.getRNG());
891 }
892 if (saslMechanism != null) {
893 final int pinnedMechanism = account.getKeyAsInt(Account.PINNED_MECHANISM_KEY, -1);
894 if (pinnedMechanism > saslMechanism.getPriority()) {
895 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
896 " has lower priority (" + saslMechanism.getPriority() +
897 ") than pinned priority (" + pinnedMechanism +
898 "). Possible downgrade attack?");
899 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
900 }
901 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
902 auth.setAttribute("mechanism", saslMechanism.getMechanism());
903 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
904 auth.setContent(saslMechanism.getClientFirstMessage());
905 }
906 tagWriter.writeElement(auth);
907 } else {
908 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find supported SASL mechanism in " + mechanisms);
909 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
910 }
911 }
912
913 private List<String> extractMechanisms(final Element stream) {
914 final ArrayList<String> mechanisms = new ArrayList<>(stream
915 .getChildren().size());
916 for (final Element child : stream.getChildren()) {
917 mechanisms.add(child.getContent());
918 }
919 return mechanisms;
920 }
921
922
923 private void register() {
924 final String preAuth = account.getKey(Account.PRE_AUTH_REGISTRATION_TOKEN);
925 if (preAuth != null && features.invite()) {
926 final IqPacket preAuthRequest = new IqPacket(IqPacket.TYPE.SET);
927 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
928 sendUnmodifiedIqPacket(preAuthRequest, (account, response) -> {
929 if (response.getType() == IqPacket.TYPE.RESULT) {
930 sendRegistryRequest();
931 } else {
932 final String error = response.getErrorCondition();
933 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": failed to pre auth. " + error);
934 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
935 }
936 }, true);
937 } else {
938 sendRegistryRequest();
939 }
940 }
941
942 private void sendRegistryRequest() {
943 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
944 register.query(Namespace.REGISTER);
945 register.setTo(account.getDomain());
946 sendUnmodifiedIqPacket(register, (account, packet) -> {
947 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
948 return;
949 }
950 if (packet.getType() == IqPacket.TYPE.ERROR) {
951 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
952 }
953 final Element query = packet.query(Namespace.REGISTER);
954 if (query.hasChild("username") && (query.hasChild("password"))) {
955 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
956 final Element username = new Element("username").setContent(account.getUsername());
957 final Element password = new Element("password").setContent(account.getPassword());
958 register1.query(Namespace.REGISTER).addChild(username);
959 register1.query().addChild(password);
960 register1.setFrom(account.getJid().asBareJid());
961 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
962 } else if (query.hasChild("x", Namespace.DATA)) {
963 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
964 final Element blob = query.findChild("data", "urn:xmpp:bob");
965 final String id = packet.getId();
966 InputStream is;
967 if (blob != null) {
968 try {
969 final String base64Blob = blob.getContent();
970 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
971 is = new ByteArrayInputStream(strBlob);
972 } catch (Exception e) {
973 is = null;
974 }
975 } else {
976 try {
977 final Field field = data.getFieldByName("url");
978 final URL url = field != null && field.getValue() != null ? new URL(field.getValue()) : null;
979 is = url != null ? url.openStream() : null;
980 } catch (IOException e) {
981 is = null;
982 }
983 }
984
985 if (is != null) {
986 Bitmap captcha = BitmapFactory.decodeStream(is);
987 try {
988 if (mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha)) {
989 return;
990 }
991 } catch (Exception e) {
992 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
993 }
994 }
995 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
996 } else if (query.hasChild("instructions") || query.hasChild("x", Namespace.OOB)) {
997 final String instructions = query.findChildContent("instructions");
998 final Element oob = query.findChild("x", Namespace.OOB);
999 final String url = oob == null ? null : oob.findChildContent("url");
1000 if (url != null) {
1001 setAccountCreationFailed(url);
1002 } else if (instructions != null) {
1003 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
1004 if (matcher.find()) {
1005 setAccountCreationFailed(instructions.substring(matcher.start(), matcher.end()));
1006 }
1007 }
1008 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1009 }
1010 }, true);
1011 }
1012
1013 private void setAccountCreationFailed(final String url) {
1014 final HttpUrl httpUrl = url == null ? null : HttpUrl.parse(url);
1015 if (httpUrl != null && httpUrl.isHttps()) {
1016 this.redirectionUrl = httpUrl;
1017 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1018 }
1019 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1020 }
1021
1022 public HttpUrl getRedirectionUrl() {
1023 return this.redirectionUrl;
1024 }
1025
1026 public void resetEverything() {
1027 resetAttemptCount(true);
1028 resetStreamId();
1029 clearIqCallbacks();
1030 this.stanzasSent = 0;
1031 mStanzaQueue.clear();
1032 this.redirectionUrl = null;
1033 synchronized (this.disco) {
1034 disco.clear();
1035 }
1036 synchronized (this.commands) {
1037 this.commands.clear();
1038 }
1039 }
1040
1041 private void sendBindRequest() {
1042 try {
1043 mXmppConnectionService.restoredFromDatabaseLatch.await();
1044 } catch (InterruptedException e) {
1045 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while waiting for DB restore during bind");
1046 return;
1047 }
1048 clearIqCallbacks();
1049 if (account.getJid().isBareJid()) {
1050 account.setResource(this.createNewResource());
1051 } else {
1052 fixResource(mXmppConnectionService, account);
1053 }
1054 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1055 final String resource = Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1056 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1057 this.sendUnmodifiedIqPacket(iq, (account, packet) -> {
1058 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1059 return;
1060 }
1061 final Element bind = packet.findChild("bind");
1062 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1063 isBound = true;
1064 final Element jid = bind.findChild("jid");
1065 if (jid != null && jid.getContent() != null) {
1066 try {
1067 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1068 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1069 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server tried to re-assign domain to " + assignedJid.getDomain());
1070 throw new StateChangingError(Account.State.BIND_FAILURE);
1071 }
1072 if (account.setJid(assignedJid)) {
1073 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": jid changed during bind. updating database");
1074 mXmppConnectionService.databaseBackend.updateAccount(account);
1075 }
1076 if (streamFeatures.hasChild("session")
1077 && !streamFeatures.findChild("session").hasChild("optional")) {
1078 sendStartSession();
1079 } else {
1080 sendPostBindInitialization();
1081 }
1082 return;
1083 } catch (final IllegalArgumentException e) {
1084 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server reported invalid jid (" + jid.getContent() + ") on bind");
1085 }
1086 } else {
1087 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure. (no jid)");
1088 }
1089 } else {
1090 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet.toString());
1091 }
1092 final Element error = packet.findChild("error");
1093 if (packet.getType() == IqPacket.TYPE.ERROR && error != null && error.hasChild("conflict")) {
1094 account.setResource(createNewResource());
1095 }
1096 throw new StateChangingError(Account.State.BIND_FAILURE);
1097 }, true);
1098 }
1099
1100 private void clearIqCallbacks() {
1101 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1102 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1103 synchronized (this.packetCallbacks) {
1104 if (this.packetCallbacks.size() == 0) {
1105 return;
1106 }
1107 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": clearing " + this.packetCallbacks.size() + " iq callbacks");
1108 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
1109 while (iterator.hasNext()) {
1110 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1111 callbacks.add(entry.second);
1112 iterator.remove();
1113 }
1114 }
1115 for (OnIqPacketReceived callback : callbacks) {
1116 try {
1117 callback.onIqPacketReceived(account, failurePacket);
1118 } catch (StateChangingError error) {
1119 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": caught StateChangingError(" + error.state.toString() + ") while clearing callbacks");
1120 //ignore
1121 }
1122 }
1123 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
1124 }
1125
1126 public void sendDiscoTimeout() {
1127 if (mWaitForDisco.compareAndSet(true, false)) {
1128 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1129 finalizeBind();
1130 }
1131 }
1132
1133 private void sendStartSession() {
1134 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": sending legacy session to outdated server");
1135 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1136 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1137 this.sendUnmodifiedIqPacket(startSession, (account, packet) -> {
1138 if (packet.getType() == IqPacket.TYPE.RESULT) {
1139 sendPostBindInitialization();
1140 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1141 throw new StateChangingError(Account.State.SESSION_FAILURE);
1142 }
1143 }, true);
1144 }
1145
1146 private void sendPostBindInitialization() {
1147 smVersion = 0;
1148 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
1149 smVersion = 3;
1150 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
1151 smVersion = 2;
1152 }
1153 if (smVersion != 0) {
1154 synchronized (this.mStanzaQueue) {
1155 final EnablePacket enable = new EnablePacket(smVersion);
1156 tagWriter.writeStanzaAsync(enable);
1157 stanzasSent = 0;
1158 mStanzaQueue.clear();
1159 }
1160 }
1161 features.carbonsEnabled = false;
1162 features.blockListRequested = false;
1163 synchronized (this.disco) {
1164 this.disco.clear();
1165 }
1166 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1167 mPendingServiceDiscoveries.set(0);
1168 if (smVersion == 0 || Patches.DISCO_EXCEPTIONS.contains(account.getJid().getDomain().toEscapedString())) {
1169 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": do not wait for service discovery");
1170 mWaitForDisco.set(false);
1171 } else {
1172 mWaitForDisco.set(true);
1173 }
1174 lastDiscoStarted = SystemClock.elapsedRealtime();
1175 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1176 Element caps = streamFeatures.findChild("c");
1177 final String hash = caps == null ? null : caps.getAttribute("hash");
1178 final String ver = caps == null ? null : caps.getAttribute("ver");
1179 ServiceDiscoveryResult discoveryResult = null;
1180 if (hash != null && ver != null) {
1181 discoveryResult = mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1182 }
1183 final boolean requestDiscoItemsFirst = !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1184 if (requestDiscoItemsFirst) {
1185 sendServiceDiscoveryItems(account.getDomain());
1186 }
1187 if (discoveryResult == null) {
1188 sendServiceDiscoveryInfo(account.getDomain());
1189 } else {
1190 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1191 disco.put(account.getDomain(), discoveryResult);
1192 }
1193 discoverMamPreferences();
1194 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1195 if (!requestDiscoItemsFirst) {
1196 sendServiceDiscoveryItems(account.getDomain());
1197 }
1198
1199 if (!mWaitForDisco.get()) {
1200 finalizeBind();
1201 }
1202 this.lastSessionStarted = SystemClock.elapsedRealtime();
1203 }
1204
1205 private void sendServiceDiscoveryInfo(final Jid jid) {
1206 mPendingServiceDiscoveries.incrementAndGet();
1207 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1208 iq.setTo(jid);
1209 iq.query("http://jabber.org/protocol/disco#info");
1210 this.sendIqPacket(iq, (account, packet) -> {
1211 if (packet.getType() == IqPacket.TYPE.RESULT) {
1212 boolean advancedStreamFeaturesLoaded;
1213 synchronized (XmppConnection.this.disco) {
1214 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1215 if (jid.equals(account.getDomain())) {
1216 mXmppConnectionService.databaseBackend.insertDiscoveryResult(result);
1217 }
1218 disco.put(jid, result);
1219 advancedStreamFeaturesLoaded = disco.containsKey(account.getDomain())
1220 && disco.containsKey(account.getJid().asBareJid());
1221 }
1222 if (advancedStreamFeaturesLoaded && (jid.equals(account.getDomain()) || jid.equals(account.getJid().asBareJid()))) {
1223 enableAdvancedStreamFeatures();
1224 }
1225 } else if (packet.getType() == IqPacket.TYPE.ERROR) {
1226 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco info for " + jid.toString());
1227 final boolean serverOrAccount = jid.equals(account.getDomain()) || jid.equals(account.getJid().asBareJid());
1228 final boolean advancedStreamFeaturesLoaded;
1229 if (serverOrAccount) {
1230 synchronized (XmppConnection.this.disco) {
1231 disco.put(jid, ServiceDiscoveryResult.empty());
1232 advancedStreamFeaturesLoaded = disco.containsKey(account.getDomain()) && disco.containsKey(account.getJid().asBareJid());
1233 }
1234 } else {
1235 advancedStreamFeaturesLoaded = false;
1236 }
1237 if (advancedStreamFeaturesLoaded) {
1238 enableAdvancedStreamFeatures();
1239 }
1240 }
1241 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1242 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1243 && mWaitForDisco.compareAndSet(true, false)) {
1244 finalizeBind();
1245 }
1246 }
1247 });
1248 }
1249
1250 private void discoverMamPreferences() {
1251 IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1252 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1253 sendIqPacket(request, (account, response) -> {
1254 if (response.getType() == IqPacket.TYPE.RESULT) {
1255 Element prefs = response.findChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1256 isMamPreferenceAlways = "always".equals(prefs == null ? null : prefs.getAttribute("default"));
1257 }
1258 });
1259 }
1260
1261 private void discoverCommands() {
1262 final IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1263 request.setTo(account.getDomain());
1264 request.addChild("query", Namespace.DISCO_ITEMS).setAttribute("node", Namespace.COMMANDS);
1265 sendIqPacket(request, (account, response) -> {
1266 if (response.getType() == IqPacket.TYPE.RESULT) {
1267 final Element query = response.findChild("query", Namespace.DISCO_ITEMS);
1268 if (query == null) {
1269 return;
1270 }
1271 final HashMap<String, Jid> commands = new HashMap<>();
1272 for (final Element child : query.getChildren()) {
1273 if ("item".equals(child.getName())) {
1274 final String node = child.getAttribute("node");
1275 final Jid jid = child.getAttributeAsJid("jid");
1276 if (node != null && jid != null) {
1277 commands.put(node, jid);
1278 }
1279 }
1280 }
1281 Log.d(Config.LOGTAG, commands.toString());
1282 synchronized (this.commands) {
1283 this.commands.clear();
1284 this.commands.putAll(commands);
1285 }
1286 }
1287 });
1288 }
1289
1290 public boolean isMamPreferenceAlways() {
1291 return isMamPreferenceAlways;
1292 }
1293
1294 private void finalizeBind() {
1295 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
1296 if (bindListener != null) {
1297 bindListener.onBind(account);
1298 }
1299 changeStatus(Account.State.ONLINE);
1300 }
1301
1302 private void enableAdvancedStreamFeatures() {
1303 if (getFeatures().blocking() && !features.blockListRequested) {
1304 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
1305 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1306 }
1307 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1308 listener.onAdvancedStreamFeaturesAvailable(account);
1309 }
1310 if (getFeatures().carbons() && !features.carbonsEnabled) {
1311 sendEnableCarbons();
1312 }
1313 if (getFeatures().commands()) {
1314 discoverCommands();
1315 }
1316 }
1317
1318 private void sendServiceDiscoveryItems(final Jid server) {
1319 mPendingServiceDiscoveries.incrementAndGet();
1320 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1321 iq.setTo(server.getDomain());
1322 iq.query("http://jabber.org/protocol/disco#items");
1323 this.sendIqPacket(iq, (account, packet) -> {
1324 if (packet.getType() == IqPacket.TYPE.RESULT) {
1325 final HashSet<Jid> items = new HashSet<>();
1326 final List<Element> elements = packet.query().getChildren();
1327 for (final Element element : elements) {
1328 if (element.getName().equals("item")) {
1329 final Jid jid = InvalidJid.getNullForInvalid(element.getAttributeAsJid("jid"));
1330 if (jid != null && !jid.equals(account.getDomain())) {
1331 items.add(jid);
1332 }
1333 }
1334 }
1335 for (Jid jid : items) {
1336 sendServiceDiscoveryInfo(jid);
1337 }
1338 } else {
1339 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco items of " + server);
1340 }
1341 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1342 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1343 && mWaitForDisco.compareAndSet(true, false)) {
1344 finalizeBind();
1345 }
1346 }
1347 });
1348 }
1349
1350 private void sendEnableCarbons() {
1351 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1352 iq.addChild("enable", "urn:xmpp:carbons:2");
1353 this.sendIqPacket(iq, (account, packet) -> {
1354 if (!packet.hasChild("error")) {
1355 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1356 + ": successfully enabled carbons");
1357 features.carbonsEnabled = true;
1358 } else {
1359 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1360 + ": error enableing carbons " + packet.toString());
1361 }
1362 });
1363 }
1364
1365 private void processStreamError(final Tag currentTag) throws IOException {
1366 final Element streamError = tagReader.readElement(currentTag);
1367 if (streamError == null) {
1368 return;
1369 }
1370 if (streamError.hasChild("conflict")) {
1371 account.setResource(createNewResource());
1372 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": switching resource due to conflict (" + account.getResource() + ")");
1373 throw new IOException();
1374 } else if (streamError.hasChild("host-unknown")) {
1375 throw new StateChangingException(Account.State.HOST_UNKNOWN);
1376 } else if (streamError.hasChild("policy-violation")) {
1377 this.lastConnect = SystemClock.elapsedRealtime();
1378 final String text = streamError.findChildContent("text");
1379 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": policy violation. " + text);
1380 failPendingMessages(text);
1381 throw new StateChangingException(Account.State.POLICY_VIOLATION);
1382 } else {
1383 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError.toString());
1384 throw new StateChangingException(Account.State.STREAM_ERROR);
1385 }
1386 }
1387
1388 private void failPendingMessages(final String error) {
1389 synchronized (this.mStanzaQueue) {
1390 for (int i = 0; i < mStanzaQueue.size(); ++i) {
1391 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
1392 if (stanza instanceof MessagePacket) {
1393 final MessagePacket packet = (MessagePacket) stanza;
1394 final String id = packet.getId();
1395 final Jid to = packet.getTo();
1396 mXmppConnectionService.markMessage(account,
1397 to.asBareJid(),
1398 id,
1399 Message.STATUS_SEND_FAILED,
1400 error);
1401 }
1402 }
1403 }
1404 }
1405
1406 private void sendStartStream() throws IOException {
1407 final Tag stream = Tag.start("stream:stream");
1408 stream.setAttribute("to", account.getServer());
1409 stream.setAttribute("version", "1.0");
1410 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
1411 stream.setAttribute("xmlns", "jabber:client");
1412 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1413 tagWriter.writeTag(stream);
1414 }
1415
1416 private String createNewResource() {
1417 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
1418 }
1419
1420 private String nextRandomId() {
1421 return nextRandomId(false);
1422 }
1423
1424 private String nextRandomId(boolean s) {
1425 return CryptoHelper.random(s ? 3 : 9, mXmppConnectionService.getRNG());
1426 }
1427
1428 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1429 packet.setFrom(account.getJid());
1430 return this.sendUnmodifiedIqPacket(packet, callback, false);
1431 }
1432
1433 public synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
1434 if (packet.getId() == null) {
1435 packet.setAttribute("id", nextRandomId());
1436 }
1437 if (callback != null) {
1438 synchronized (this.packetCallbacks) {
1439 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1440 }
1441 }
1442 this.sendPacket(packet, force);
1443 return packet.getId();
1444 }
1445
1446 public void sendMessagePacket(final MessagePacket packet) {
1447 this.sendPacket(packet);
1448 }
1449
1450 public void sendPresencePacket(final PresencePacket packet) {
1451 this.sendPacket(packet);
1452 }
1453
1454 private synchronized void sendPacket(final AbstractStanza packet) {
1455 sendPacket(packet, false);
1456 }
1457
1458 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
1459 if (stanzasSent == Integer.MAX_VALUE) {
1460 resetStreamId();
1461 disconnect(true);
1462 return;
1463 }
1464 synchronized (this.mStanzaQueue) {
1465 if (force || isBound) {
1466 tagWriter.writeStanzaAsync(packet);
1467 } else {
1468 Log.d(Config.LOGTAG, account.getJid().asBareJid() + " do not write stanza to unbound stream " + packet.toString());
1469 }
1470 if (packet instanceof AbstractAcknowledgeableStanza) {
1471 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1472
1473 if (this.mStanzaQueue.size() != 0) {
1474 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
1475 if (currentHighestKey != stanzasSent) {
1476 throw new AssertionError("Stanza count messed up");
1477 }
1478 }
1479
1480 ++stanzasSent;
1481 this.mStanzaQueue.append(stanzasSent, stanza);
1482 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
1483 if (Config.EXTENDED_SM_LOGGING) {
1484 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1485 }
1486 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1487 }
1488 }
1489 }
1490 }
1491
1492 public void sendPing() {
1493 if (!r()) {
1494 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1495 iq.setFrom(account.getJid());
1496 iq.addChild("ping", Namespace.PING);
1497 this.sendIqPacket(iq, null);
1498 }
1499 this.lastPingSent = SystemClock.elapsedRealtime();
1500 }
1501
1502 public void setOnMessagePacketReceivedListener(
1503 final OnMessagePacketReceived listener) {
1504 this.messageListener = listener;
1505 }
1506
1507 public void setOnUnregisteredIqPacketReceivedListener(
1508 final OnIqPacketReceived listener) {
1509 this.unregisteredIqListener = listener;
1510 }
1511
1512 public void setOnPresencePacketReceivedListener(
1513 final OnPresencePacketReceived listener) {
1514 this.presenceListener = listener;
1515 }
1516
1517 public void setOnJinglePacketReceivedListener(
1518 final OnJinglePacketReceived listener) {
1519 this.jingleListener = listener;
1520 }
1521
1522 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1523 this.statusListener = listener;
1524 }
1525
1526 public void setOnBindListener(final OnBindListener listener) {
1527 this.bindListener = listener;
1528 }
1529
1530 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1531 this.acknowledgedListener = listener;
1532 }
1533
1534 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1535 this.advancedStreamFeaturesLoadedListeners.add(listener);
1536 }
1537
1538 private void forceCloseSocket() {
1539 FileBackend.close(this.socket);
1540 FileBackend.close(this.tagReader);
1541 }
1542
1543 public void interrupt() {
1544 if (this.mThread != null) {
1545 this.mThread.interrupt();
1546 }
1547 }
1548
1549 public void disconnect(final boolean force) {
1550 interrupt();
1551 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
1552 if (force) {
1553 forceCloseSocket();
1554 } else {
1555 final TagWriter currentTagWriter = this.tagWriter;
1556 if (currentTagWriter.isActive()) {
1557 currentTagWriter.finish();
1558 final Socket currentSocket = this.socket;
1559 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
1560 try {
1561 currentTagWriter.await(1, TimeUnit.SECONDS);
1562 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
1563 currentTagWriter.writeTag(Tag.end("stream:stream"));
1564 if (streamCountDownLatch != null) {
1565 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
1566 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote ended stream");
1567 } else {
1568 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote has not closed socket. force closing");
1569 }
1570 }
1571 } catch (InterruptedException e) {
1572 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while gracefully closing stream");
1573 } catch (final IOException e) {
1574 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": io exception during disconnect (" + e.getMessage() + ")");
1575 } finally {
1576 FileBackend.close(currentSocket);
1577 }
1578 } else {
1579 forceCloseSocket();
1580 }
1581 }
1582 }
1583
1584 private void resetStreamId() {
1585 this.streamId = null;
1586 }
1587
1588 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
1589 synchronized (this.disco) {
1590 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
1591 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
1592 if (cursor.getValue().getFeatures().contains(feature)) {
1593 items.add(cursor);
1594 }
1595 }
1596 return items;
1597 }
1598 }
1599
1600 public Jid findDiscoItemByFeature(final String feature) {
1601 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
1602 if (items.size() >= 1) {
1603 return items.get(0).getKey();
1604 }
1605 return null;
1606 }
1607
1608 public boolean r() {
1609 if (getFeatures().sm()) {
1610 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1611 return true;
1612 } else {
1613 return false;
1614 }
1615 }
1616
1617 public List<String> getMucServersWithholdAccount() {
1618 final List<String> servers = getMucServers();
1619 servers.remove(account.getDomain().toEscapedString());
1620 return servers;
1621 }
1622
1623 public List<String> getMucServers() {
1624 List<String> servers = new ArrayList<>();
1625 synchronized (this.disco) {
1626 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
1627 final ServiceDiscoveryResult value = cursor.getValue();
1628 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
1629 && value.hasIdentity("conference", "text")
1630 && !value.getFeatures().contains("jabber:iq:gateway")
1631 && !value.hasIdentity("conference", "irc")) {
1632 servers.add(cursor.getKey().toString());
1633 }
1634 }
1635 }
1636 return servers;
1637 }
1638
1639 public String getMucServer() {
1640 List<String> servers = getMucServers();
1641 return servers.size() > 0 ? servers.get(0) : null;
1642 }
1643
1644 public int getTimeToNextAttempt() {
1645 final int additionalTime = account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
1646 final int interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
1647 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1648 return interval - secondsSinceLast;
1649 }
1650
1651 public int getAttempt() {
1652 return this.attempt;
1653 }
1654
1655 public Features getFeatures() {
1656 return this.features;
1657 }
1658
1659 public long getLastSessionEstablished() {
1660 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1661 return System.currentTimeMillis() - diff;
1662 }
1663
1664 public long getLastConnect() {
1665 return this.lastConnect;
1666 }
1667
1668 public long getLastPingSent() {
1669 return this.lastPingSent;
1670 }
1671
1672 public long getLastDiscoStarted() {
1673 return this.lastDiscoStarted;
1674 }
1675
1676 public long getLastPacketReceived() {
1677 return this.lastPacketReceived;
1678 }
1679
1680 public void sendActive() {
1681 this.sendPacket(new ActivePacket());
1682 }
1683
1684 public void sendInactive() {
1685 this.sendPacket(new InactivePacket());
1686 }
1687
1688 public void resetAttemptCount(boolean resetConnectTime) {
1689 this.attempt = 0;
1690 if (resetConnectTime) {
1691 this.lastConnect = 0;
1692 }
1693 }
1694
1695 public void setInteractive(boolean interactive) {
1696 this.mInteractive = interactive;
1697 }
1698
1699 public Identity getServerIdentity() {
1700 synchronized (this.disco) {
1701 ServiceDiscoveryResult result = disco.get(account.getJid().getDomain());
1702 if (result == null) {
1703 return Identity.UNKNOWN;
1704 }
1705 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
1706 if (id.getType().equals("im") && id.getCategory().equals("server") && id.getName() != null) {
1707 switch (id.getName()) {
1708 case "Prosody":
1709 return Identity.PROSODY;
1710 case "ejabberd":
1711 return Identity.EJABBERD;
1712 case "Slack-XMPP":
1713 return Identity.SLACK;
1714 }
1715 }
1716 }
1717 }
1718 return Identity.UNKNOWN;
1719 }
1720
1721 private IqGenerator getIqGenerator() {
1722 return mXmppConnectionService.getIqGenerator();
1723 }
1724
1725 public enum Identity {
1726 FACEBOOK,
1727 SLACK,
1728 EJABBERD,
1729 PROSODY,
1730 NIMBUZZ,
1731 UNKNOWN
1732 }
1733
1734 private static class TlsFactoryVerifier {
1735 private final SSLSocketFactory factory;
1736 private final DomainHostnameVerifier verifier;
1737
1738 TlsFactoryVerifier(final SSLSocketFactory factory, final DomainHostnameVerifier verifier) throws IOException {
1739 this.factory = factory;
1740 this.verifier = verifier;
1741 if (factory == null || verifier == null) {
1742 throw new IOException("could not setup ssl");
1743 }
1744 }
1745 }
1746
1747 private class MyKeyManager implements X509KeyManager {
1748 @Override
1749 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
1750 return account.getPrivateKeyAlias();
1751 }
1752
1753 @Override
1754 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
1755 return null;
1756 }
1757
1758 @Override
1759 public X509Certificate[] getCertificateChain(String alias) {
1760 Log.d(Config.LOGTAG, "getting certificate chain");
1761 try {
1762 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
1763 } catch (Exception e) {
1764 Log.d(Config.LOGTAG, e.getMessage());
1765 return new X509Certificate[0];
1766 }
1767 }
1768
1769 @Override
1770 public String[] getClientAliases(String s, Principal[] principals) {
1771 final String alias = account.getPrivateKeyAlias();
1772 return alias != null ? new String[]{alias} : new String[0];
1773 }
1774
1775 @Override
1776 public String[] getServerAliases(String s, Principal[] principals) {
1777 return new String[0];
1778 }
1779
1780 @Override
1781 public PrivateKey getPrivateKey(String alias) {
1782 try {
1783 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
1784 } catch (Exception e) {
1785 return null;
1786 }
1787 }
1788 }
1789
1790 private static class StateChangingError extends Error {
1791 private final Account.State state;
1792
1793 public StateChangingError(Account.State state) {
1794 this.state = state;
1795 }
1796 }
1797
1798 private static class StateChangingException extends IOException {
1799 private final Account.State state;
1800
1801 public StateChangingException(Account.State state) {
1802 this.state = state;
1803 }
1804 }
1805
1806 public class Features {
1807 XmppConnection connection;
1808 private boolean carbonsEnabled = false;
1809 private boolean encryptionEnabled = false;
1810 private boolean blockListRequested = false;
1811
1812 public Features(final XmppConnection connection) {
1813 this.connection = connection;
1814 }
1815
1816 private boolean hasDiscoFeature(final Jid server, final String feature) {
1817 synchronized (XmppConnection.this.disco) {
1818 return connection.disco.containsKey(server) &&
1819 connection.disco.get(server).getFeatures().contains(feature);
1820 }
1821 }
1822
1823 public boolean carbons() {
1824 return hasDiscoFeature(account.getDomain(), "urn:xmpp:carbons:2");
1825 }
1826
1827 public boolean commands() {
1828 return hasDiscoFeature(account.getDomain(), Namespace.COMMANDS);
1829 }
1830
1831 public boolean easyOnboardingInvites() {
1832 synchronized (commands) {
1833 return commands.containsKey(Namespace.EASY_ONBOARDING_INVITE);
1834 }
1835 }
1836
1837 public boolean bookmarksConversion() {
1838 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION) && pepPublishOptions();
1839 }
1840
1841 public boolean avatarConversion() {
1842 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.AVATAR_CONVERSION) && pepPublishOptions();
1843 }
1844
1845 public boolean blocking() {
1846 return hasDiscoFeature(account.getDomain(), Namespace.BLOCKING);
1847 }
1848
1849 public boolean spamReporting() {
1850 return hasDiscoFeature(account.getDomain(), "urn:xmpp:reporting:reason:spam:0");
1851 }
1852
1853 public boolean flexibleOfflineMessageRetrieval() {
1854 return hasDiscoFeature(account.getDomain(), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
1855 }
1856
1857 public boolean register() {
1858 return hasDiscoFeature(account.getDomain(), Namespace.REGISTER);
1859 }
1860
1861 public boolean invite() {
1862 return connection.streamFeatures != null && connection.streamFeatures.hasChild("register", Namespace.INVITE);
1863 }
1864
1865 public boolean sm() {
1866 return streamId != null
1867 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1868 }
1869
1870 public boolean csi() {
1871 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1872 }
1873
1874 public boolean pep() {
1875 synchronized (XmppConnection.this.disco) {
1876 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1877 return info != null && info.hasIdentity("pubsub", "pep");
1878 }
1879 }
1880
1881 public boolean pepPersistent() {
1882 synchronized (XmppConnection.this.disco) {
1883 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1884 return info != null && info.getFeatures().contains("http://jabber.org/protocol/pubsub#persistent-items");
1885 }
1886 }
1887
1888 public boolean pepPublishOptions() {
1889 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
1890 }
1891
1892 public boolean pepOmemoWhitelisted() {
1893 return hasDiscoFeature(account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
1894 }
1895
1896 public boolean mam() {
1897 return MessageArchiveService.Version.has(getAccountFeatures());
1898 }
1899
1900 public List<String> getAccountFeatures() {
1901 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
1902 return result == null ? Collections.emptyList() : result.getFeatures();
1903 }
1904
1905 public boolean push() {
1906 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
1907 || hasDiscoFeature(account.getDomain(), Namespace.PUSH);
1908 }
1909
1910 public boolean rosterVersioning() {
1911 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1912 }
1913
1914 public void setBlockListRequested(boolean value) {
1915 this.blockListRequested = value;
1916 }
1917
1918 public boolean httpUpload(long filesize) {
1919 if (Config.DISABLE_HTTP_UPLOAD) {
1920 return false;
1921 } else {
1922 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1923 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1924 if (items.size() > 0) {
1925 try {
1926 long maxsize = Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1927 if (filesize <= maxsize) {
1928 return true;
1929 } else {
1930 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": http upload is not available for files with size " + filesize + " (max is " + maxsize + ")");
1931 return false;
1932 }
1933 } catch (Exception e) {
1934 return true;
1935 }
1936 }
1937 }
1938 return false;
1939 }
1940 }
1941
1942 public boolean useLegacyHttpUpload() {
1943 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
1944 }
1945
1946 public long getMaxHttpUploadSize() {
1947 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1948 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1949 if (items.size() > 0) {
1950 try {
1951 return Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1952 } catch (Exception e) {
1953 //ignored
1954 }
1955 }
1956 }
1957 return -1;
1958 }
1959
1960 public boolean stanzaIds() {
1961 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
1962 }
1963
1964 public boolean bookmarks2() {
1965 return Config.USE_BOOKMARKS2 /* || hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS2_COMPAT)*/;
1966 }
1967
1968 public boolean externalServiceDiscovery() {
1969 return hasDiscoFeature(account.getDomain(), Namespace.EXTERNAL_SERVICE_DISCOVERY);
1970 }
1971 }
1972}