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.UnknownHostException;
26import java.security.KeyManagementException;
27import java.security.NoSuchAlgorithmException;
28import java.security.Principal;
29import java.security.PrivateKey;
30import java.security.cert.X509Certificate;
31import java.util.ArrayList;
32import java.util.Arrays;
33import java.util.Collections;
34import java.util.HashMap;
35import java.util.HashSet;
36import java.util.Hashtable;
37import java.util.Iterator;
38import java.util.List;
39import java.util.Map.Entry;
40import java.util.Set;
41import java.util.concurrent.CountDownLatch;
42import java.util.concurrent.TimeUnit;
43import java.util.concurrent.atomic.AtomicBoolean;
44import java.util.concurrent.atomic.AtomicInteger;
45import java.util.regex.Matcher;
46
47import javax.net.ssl.KeyManager;
48import javax.net.ssl.SSLContext;
49import javax.net.ssl.SSLPeerUnverifiedException;
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.http.HttpConnectionManager;
73import eu.siacs.conversations.persistance.FileBackend;
74import eu.siacs.conversations.services.MemorizingTrustManager;
75import eu.siacs.conversations.services.MessageArchiveService;
76import eu.siacs.conversations.services.NotificationService;
77import eu.siacs.conversations.services.XmppConnectionService;
78import eu.siacs.conversations.utils.CryptoHelper;
79import eu.siacs.conversations.utils.Patterns;
80import eu.siacs.conversations.utils.Resolver;
81import eu.siacs.conversations.utils.SSLSocketHelper;
82import eu.siacs.conversations.utils.SocksSocketFactory;
83import eu.siacs.conversations.utils.XmlHelper;
84import eu.siacs.conversations.xml.Element;
85import eu.siacs.conversations.xml.LocalizedContent;
86import eu.siacs.conversations.xml.Namespace;
87import eu.siacs.conversations.xml.Tag;
88import eu.siacs.conversations.xml.TagWriter;
89import eu.siacs.conversations.xml.XmlReader;
90import eu.siacs.conversations.xmpp.forms.Data;
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 SSLSocketFactory getSSLSocketFactory() throws NoSuchAlgorithmException, KeyManagementException {
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 return sc.getSocketFactory();
444 }
445
446 @Override
447 public void run() {
448 synchronized (this) {
449 this.mThread = Thread.currentThread();
450 if (this.mThread.isInterrupted()) {
451 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": aborting connect because thread was interrupted");
452 return;
453 }
454 forceCloseSocket();
455 }
456 connect();
457 }
458
459 private void processStream() throws XmlPullParserException, IOException {
460 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
461 this.mStreamCountDownLatch = streamCountDownLatch;
462 Tag nextTag = tagReader.readTag();
463 while (nextTag != null && !nextTag.isEnd("stream")) {
464 if (nextTag.isStart("error")) {
465 processStreamError(nextTag);
466 } else if (nextTag.isStart("features")) {
467 processStreamFeatures(nextTag);
468 } else if (nextTag.isStart("proceed")) {
469 switchOverToTls();
470 } else if (nextTag.isStart("success")) {
471 final String challenge = tagReader.readElement(nextTag).getContent();
472 try {
473 saslMechanism.getResponse(challenge);
474 } catch (final SaslMechanism.AuthenticationException e) {
475 Log.e(Config.LOGTAG, String.valueOf(e));
476 throw new StateChangingException(Account.State.UNAUTHORIZED);
477 }
478 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": logged in");
479 account.setKey(Account.PINNED_MECHANISM_KEY,
480 String.valueOf(saslMechanism.getPriority()));
481 tagReader.reset();
482 sendStartStream();
483 final Tag tag = tagReader.readTag();
484 if (tag != null && tag.isStart("stream")) {
485 processStream();
486 } else {
487 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
488 }
489 break;
490 } else if (nextTag.isStart("failure")) {
491 final Element failure = tagReader.readElement(nextTag);
492 if (Namespace.SASL.equals(failure.getNamespace())) {
493 final String text = failure.findChildContent("text");
494 if (failure.hasChild("account-disabled") && text != null) {
495 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
496 if (matcher.find()) {
497 final HttpUrl url;
498 try {
499 url = HttpUrl.get(text.substring(matcher.start(), matcher.end()));
500 if (url.isHttps()) {
501 this.redirectionUrl = url;
502 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
503 }
504 } catch (IllegalArgumentException e) {
505 throw new StateChangingException(Account.State.UNAUTHORIZED);
506 }
507 }
508 }
509 throw new StateChangingException(Account.State.UNAUTHORIZED);
510 } else if (Namespace.TLS.equals(failure.getNamespace())) {
511 throw new StateChangingException(Account.State.TLS_ERROR);
512 } else {
513 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
514 }
515 } else if (nextTag.isStart("challenge")) {
516 final String challenge = tagReader.readElement(nextTag).getContent();
517 final Element response = new Element("response", Namespace.SASL);
518 try {
519 response.setContent(saslMechanism.getResponse(challenge));
520 } catch (final SaslMechanism.AuthenticationException e) {
521 // TODO: Send auth abort tag.
522 Log.e(Config.LOGTAG, e.toString());
523 }
524 tagWriter.writeElement(response);
525 } else if (nextTag.isStart("enabled")) {
526 final Element enabled = tagReader.readElement(nextTag);
527 if ("true".equals(enabled.getAttribute("resume"))) {
528 this.streamId = enabled.getAttribute("id");
529 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
530 + ": stream management(" + smVersion
531 + ") enabled (resumable)");
532 } else {
533 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
534 + ": stream management(" + smVersion + ") enabled");
535 }
536 this.stanzasReceived = 0;
537 this.inSmacksSession = true;
538 final RequestPacket r = new RequestPacket(smVersion);
539 tagWriter.writeStanzaAsync(r);
540 } else if (nextTag.isStart("resumed")) {
541 this.inSmacksSession = true;
542 this.isBound = true;
543 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
544 lastPacketReceived = SystemClock.elapsedRealtime();
545 final Element resumed = tagReader.readElement(nextTag);
546 final String h = resumed.getAttribute("h");
547 try {
548 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
549 final boolean acknowledgedMessages;
550 synchronized (this.mStanzaQueue) {
551 final int serverCount = Integer.parseInt(h);
552 if (serverCount < stanzasSent) {
553 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
554 + ": session resumed with lost packages");
555 stanzasSent = serverCount;
556 } else {
557 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": session resumed");
558 }
559 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
560 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
561 failedStanzas.add(mStanzaQueue.valueAt(i));
562 }
563 mStanzaQueue.clear();
564 }
565 if (acknowledgedMessages) {
566 mXmppConnectionService.updateConversationUi();
567 }
568 Log.d(Config.LOGTAG, "resending " + failedStanzas.size() + " stanzas");
569 for (AbstractAcknowledgeableStanza packet : failedStanzas) {
570 if (packet instanceof MessagePacket) {
571 MessagePacket message = (MessagePacket) packet;
572 mXmppConnectionService.markMessage(account,
573 message.getTo().asBareJid(),
574 message.getId(),
575 Message.STATUS_UNSEND);
576 }
577 sendPacket(packet);
578 }
579 } catch (final NumberFormatException ignored) {
580 }
581 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
582 changeStatus(Account.State.ONLINE);
583 } else if (nextTag.isStart("r")) {
584 tagReader.readElement(nextTag);
585 if (Config.EXTENDED_SM_LOGGING) {
586 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
587 }
588 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
589 tagWriter.writeStanzaAsync(ack);
590 } else if (nextTag.isStart("a")) {
591 boolean accountUiNeedsRefresh = false;
592 synchronized (NotificationService.CATCHUP_LOCK) {
593 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
594 final int messageCount = mSmCatchupMessageCounter.get();
595 final int pendingIQs = packetCallbacks.size();
596 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": SM catchup complete (messages=" + messageCount + ", pending IQs=" + pendingIQs + ")");
597 accountUiNeedsRefresh = true;
598 if (messageCount > 0) {
599 mXmppConnectionService.getNotificationService().finishBacklog(true, account);
600 }
601 }
602 }
603 if (accountUiNeedsRefresh) {
604 mXmppConnectionService.updateAccountUi();
605 }
606 final Element ack = tagReader.readElement(nextTag);
607 lastPacketReceived = SystemClock.elapsedRealtime();
608 try {
609 final boolean acknowledgedMessages;
610 synchronized (this.mStanzaQueue) {
611 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
612 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence);
613 }
614 if (acknowledgedMessages) {
615 mXmppConnectionService.updateConversationUi();
616 }
617 } catch (NumberFormatException | NullPointerException e) {
618 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server send ack without sequence number");
619 }
620 } else if (nextTag.isStart("failed")) {
621 Element failed = tagReader.readElement(nextTag);
622 try {
623 final int serverCount = Integer.parseInt(failed.getAttribute("h"));
624 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed but server acknowledged stanza #" + serverCount);
625 final boolean acknowledgedMessages;
626 synchronized (this.mStanzaQueue) {
627 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
628 }
629 if (acknowledgedMessages) {
630 mXmppConnectionService.updateConversationUi();
631 }
632 } catch (NumberFormatException | NullPointerException e) {
633 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
634 }
635 resetStreamId();
636 sendBindRequest();
637 } else if (nextTag.isStart("iq")) {
638 processIq(nextTag);
639 } else if (nextTag.isStart("message")) {
640 processMessage(nextTag);
641 } else if (nextTag.isStart("presence")) {
642 processPresence(nextTag);
643 }
644 nextTag = tagReader.readTag();
645 }
646 if (nextTag != null && nextTag.isEnd("stream")) {
647 streamCountDownLatch.countDown();
648 }
649 }
650
651 private boolean acknowledgeStanzaUpTo(int serverCount) {
652 if (serverCount > stanzasSent) {
653 Log.e(Config.LOGTAG, "server acknowledged more stanzas than we sent. serverCount=" + serverCount + ", ourCount=" + stanzasSent);
654 }
655 boolean acknowledgedMessages = false;
656 for (int i = 0; i < mStanzaQueue.size(); ++i) {
657 if (serverCount >= mStanzaQueue.keyAt(i)) {
658 if (Config.EXTENDED_SM_LOGGING) {
659 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
660 }
661 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
662 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
663 final MessagePacket packet = (MessagePacket) stanza;
664 final String id = packet.getId();
665 final Jid to = packet.getTo();
666 if (id != null && to != null) {
667 acknowledgedMessages |= acknowledgedListener.onMessageAcknowledged(account, to, id);
668 }
669 }
670 mStanzaQueue.removeAt(i);
671 i--;
672 }
673 }
674 return acknowledgedMessages;
675 }
676
677 private @NonNull
678 Element processPacket(final Tag currentTag, final int packetType) throws IOException {
679 final Element element;
680 switch (packetType) {
681 case PACKET_IQ:
682 element = new IqPacket();
683 break;
684 case PACKET_MESSAGE:
685 element = new MessagePacket();
686 break;
687 case PACKET_PRESENCE:
688 element = new PresencePacket();
689 break;
690 default:
691 throw new AssertionError("Should never encounter invalid type");
692 }
693 element.setAttributes(currentTag.getAttributes());
694 Tag nextTag = tagReader.readTag();
695 if (nextTag == null) {
696 throw new IOException("interrupted mid tag");
697 }
698 while (!nextTag.isEnd(element.getName())) {
699 if (!nextTag.isNo()) {
700 element.addChild(tagReader.readElement(nextTag));
701 }
702 nextTag = tagReader.readTag();
703 if (nextTag == null) {
704 throw new IOException("interrupted mid tag");
705 }
706 }
707 if (stanzasReceived == Integer.MAX_VALUE) {
708 resetStreamId();
709 throw new IOException("time to restart the session. cant handle >2 billion pcks");
710 }
711 if (inSmacksSession) {
712 ++stanzasReceived;
713 } else if (features.sm()) {
714 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not counting stanza(" + element.getClass().getSimpleName() + "). Not in smacks session.");
715 }
716 lastPacketReceived = SystemClock.elapsedRealtime();
717 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
718 Log.d(Config.LOGTAG, "[background stanza] " + element);
719 }
720 if (element instanceof IqPacket
721 && (((IqPacket) element).getType() == IqPacket.TYPE.SET)
722 && element.hasChild("jingle", Namespace.JINGLE)) {
723 return JinglePacket.upgrade((IqPacket) element);
724 } else {
725 return element;
726 }
727 }
728
729 private void processIq(final Tag currentTag) throws IOException {
730 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
731 if (!packet.valid()) {
732 Log.e(Config.LOGTAG, "encountered invalid iq from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
733 return;
734 }
735 if (packet instanceof JinglePacket) {
736 if (this.jingleListener != null) {
737 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
738 }
739 } else {
740 OnIqPacketReceived callback = null;
741 synchronized (this.packetCallbacks) {
742 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
743 if (packetCallbackDuple != null) {
744 // Packets to the server should have responses from the server
745 if (packetCallbackDuple.first.toServer(account)) {
746 if (packet.fromServer(account)) {
747 callback = packetCallbackDuple.second;
748 packetCallbacks.remove(packet.getId());
749 } else {
750 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
751 }
752 } else {
753 if (packet.getFrom() != null && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
754 callback = packetCallbackDuple.second;
755 packetCallbacks.remove(packet.getId());
756 } else {
757 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
758 }
759 }
760 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
761 callback = this.unregisteredIqListener;
762 }
763 }
764 if (callback != null) {
765 try {
766 callback.onIqPacketReceived(account, packet);
767 } catch (StateChangingError error) {
768 throw new StateChangingException(error.state);
769 }
770 }
771 }
772 }
773
774 private void processMessage(final Tag currentTag) throws IOException {
775 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
776 if (!packet.valid()) {
777 Log.e(Config.LOGTAG, "encountered invalid message from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
778 return;
779 }
780 this.messageListener.onMessagePacketReceived(account, packet);
781 }
782
783 private void processPresence(final Tag currentTag) throws IOException {
784 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
785 if (!packet.valid()) {
786 Log.e(Config.LOGTAG, "encountered invalid presence from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
787 return;
788 }
789 this.presenceListener.onPresencePacketReceived(account, packet);
790 }
791
792 private void sendStartTLS() throws IOException {
793 final Tag startTLS = Tag.empty("starttls");
794 startTLS.setAttribute("xmlns", Namespace.TLS);
795 tagWriter.writeTag(startTLS);
796 }
797
798 private void switchOverToTls() throws XmlPullParserException, IOException {
799 tagReader.readTag();
800 final Socket socket = this.socket;
801 final SSLSocket sslSocket = upgradeSocketToTls(socket);
802 tagReader.setInputStream(sslSocket.getInputStream());
803 tagWriter.setOutputStream(sslSocket.getOutputStream());
804 sendStartStream();
805 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
806 features.encryptionEnabled = true;
807 final Tag tag = tagReader.readTag();
808 if (tag != null && tag.isStart("stream")) {
809 SSLSocketHelper.log(account, sslSocket);
810 processStream();
811 } else {
812 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
813 }
814 sslSocket.close();
815 }
816
817 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
818 final SSLSocketFactory sslSocketFactory;
819 try {
820 sslSocketFactory = getSSLSocketFactory();
821 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
822 throw new StateChangingException(Account.State.TLS_ERROR);
823 }
824 final InetAddress address = socket.getInetAddress();
825 final SSLSocket sslSocket = (SSLSocket) sslSocketFactory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
826 SSLSocketHelper.setSecurity(sslSocket);
827 SSLSocketHelper.setHostname(sslSocket, IDN.toASCII(account.getServer()));
828 SSLSocketHelper.setApplicationProtocol(sslSocket, "xmpp-client");
829 final XmppDomainVerifier xmppDomainVerifier = new XmppDomainVerifier();
830 try {
831 if (!xmppDomainVerifier.verify(account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
832 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate domain verification failed");
833 FileBackend.close(sslSocket);
834 throw new StateChangingException(Account.State.TLS_ERROR_DOMAIN);
835 }
836 } catch (final SSLPeerUnverifiedException e) {
837 FileBackend.close(sslSocket);
838 throw new StateChangingException(Account.State.TLS_ERROR);
839 }
840 return sslSocket;
841 }
842
843 private void processStreamFeatures(final Tag currentTag) throws IOException {
844 this.streamFeatures = tagReader.readElement(currentTag);
845 final boolean isSecure = features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
846 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
847 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
848 sendStartTLS();
849 } else if (this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
850 if (isSecure) {
851 register();
852 } else {
853 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find STARTTLS for registration process " + XmlHelper.printElementNames(this.streamFeatures));
854 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
855 }
856 } else if (!this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
857 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
858 } else if (this.streamFeatures.hasChild("mechanisms") && shouldAuthenticate && isSecure) {
859 authenticate();
860 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
861 if (Config.EXTENDED_SM_LOGGING) {
862 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resuming after stanza #" + stanzasReceived);
863 }
864 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
865 this.mSmCatchupMessageCounter.set(0);
866 this.mWaitingForSmCatchup.set(true);
867 this.tagWriter.writeStanzaAsync(resume);
868 } else if (needsBinding) {
869 if (this.streamFeatures.hasChild("bind") && isSecure) {
870 sendBindRequest();
871 } else {
872 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find bind feature " + XmlHelper.printElementNames(this.streamFeatures));
873 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
874 }
875 }
876 }
877
878 private void authenticate() throws IOException {
879 final List<String> mechanisms = extractMechanisms(streamFeatures.findChild("mechanisms"));
880 final Element auth = new Element("auth", Namespace.SASL);
881 if (mechanisms.contains(External.MECHANISM) && account.getPrivateKeyAlias() != null) {
882 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
883 } else if (mechanisms.contains(ScramSha512.MECHANISM)) {
884 saslMechanism = new ScramSha512(tagWriter, account, mXmppConnectionService.getRNG());
885 } else if (mechanisms.contains(ScramSha256.MECHANISM)) {
886 saslMechanism = new ScramSha256(tagWriter, account, mXmppConnectionService.getRNG());
887 } else if (mechanisms.contains(ScramSha1.MECHANISM)) {
888 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
889 } else if (mechanisms.contains(Plain.MECHANISM) && !account.getJid().getDomain().toEscapedString().equals("nimbuzz.com")) {
890 saslMechanism = new Plain(tagWriter, account);
891 } else if (mechanisms.contains(DigestMd5.MECHANISM)) {
892 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
893 } else if (mechanisms.contains(Anonymous.MECHANISM)) {
894 saslMechanism = new Anonymous(tagWriter, account, mXmppConnectionService.getRNG());
895 }
896 if (saslMechanism != null) {
897 final int pinnedMechanism = account.getKeyAsInt(Account.PINNED_MECHANISM_KEY, -1);
898 if (pinnedMechanism > saslMechanism.getPriority()) {
899 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
900 " has lower priority (" + saslMechanism.getPriority() +
901 ") than pinned priority (" + pinnedMechanism +
902 "). Possible downgrade attack?");
903 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
904 }
905 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
906 auth.setAttribute("mechanism", saslMechanism.getMechanism());
907 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
908 auth.setContent(saslMechanism.getClientFirstMessage());
909 }
910 tagWriter.writeElement(auth);
911 } else {
912 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find supported SASL mechanism in " + mechanisms);
913 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
914 }
915 }
916
917 private List<String> extractMechanisms(final Element stream) {
918 final ArrayList<String> mechanisms = new ArrayList<>(stream
919 .getChildren().size());
920 for (final Element child : stream.getChildren()) {
921 mechanisms.add(child.getContent());
922 }
923 return mechanisms;
924 }
925
926
927 private void register() {
928 final String preAuth = account.getKey(Account.PRE_AUTH_REGISTRATION_TOKEN);
929 if (preAuth != null && features.invite()) {
930 final IqPacket preAuthRequest = new IqPacket(IqPacket.TYPE.SET);
931 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
932 sendUnmodifiedIqPacket(preAuthRequest, (account, response) -> {
933 if (response.getType() == IqPacket.TYPE.RESULT) {
934 sendRegistryRequest();
935 } else {
936 final String error = response.getErrorCondition();
937 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": failed to pre auth. " + error);
938 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
939 }
940 }, true);
941 } else {
942 sendRegistryRequest();
943 }
944 }
945
946 private void sendRegistryRequest() {
947 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
948 register.query(Namespace.REGISTER);
949 register.setTo(account.getDomain());
950 sendUnmodifiedIqPacket(register, (account, packet) -> {
951 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
952 return;
953 }
954 if (packet.getType() == IqPacket.TYPE.ERROR) {
955 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
956 }
957 final Element query = packet.query(Namespace.REGISTER);
958 if (query.hasChild("username") && (query.hasChild("password"))) {
959 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
960 final Element username = new Element("username").setContent(account.getUsername());
961 final Element password = new Element("password").setContent(account.getPassword());
962 register1.query(Namespace.REGISTER).addChild(username);
963 register1.query().addChild(password);
964 register1.setFrom(account.getJid().asBareJid());
965 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
966 } else if (query.hasChild("x", Namespace.DATA)) {
967 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
968 final Element blob = query.findChild("data", "urn:xmpp:bob");
969 final String id = packet.getId();
970 InputStream is;
971 if (blob != null) {
972 try {
973 final String base64Blob = blob.getContent();
974 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
975 is = new ByteArrayInputStream(strBlob);
976 } catch (Exception e) {
977 is = null;
978 }
979 } else {
980 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
981 try {
982 final String url = data.getValue("url");
983 final String fallbackUrl = data.getValue("captcha-fallback-url");
984 if (url != null) {
985 is = HttpConnectionManager.open(url, useTor);
986 } else if (fallbackUrl != null) {
987 is = HttpConnectionManager.open(fallbackUrl, useTor);
988 } else {
989 is = null;
990 }
991 } catch (final IOException e) {
992 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to fetch captcha", e);
993 is = null;
994 }
995 }
996
997 if (is != null) {
998 Bitmap captcha = BitmapFactory.decodeStream(is);
999 try {
1000 if (mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha)) {
1001 return;
1002 }
1003 } catch (Exception e) {
1004 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1005 }
1006 }
1007 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1008 } else if (query.hasChild("instructions") || query.hasChild("x", Namespace.OOB)) {
1009 final String instructions = query.findChildContent("instructions");
1010 final Element oob = query.findChild("x", Namespace.OOB);
1011 final String url = oob == null ? null : oob.findChildContent("url");
1012 if (url != null) {
1013 setAccountCreationFailed(url);
1014 } else if (instructions != null) {
1015 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
1016 if (matcher.find()) {
1017 setAccountCreationFailed(instructions.substring(matcher.start(), matcher.end()));
1018 }
1019 }
1020 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1021 }
1022 }, true);
1023 }
1024
1025 private void setAccountCreationFailed(final String url) {
1026 final HttpUrl httpUrl = url == null ? null : HttpUrl.parse(url);
1027 if (httpUrl != null && httpUrl.isHttps()) {
1028 this.redirectionUrl = httpUrl;
1029 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1030 }
1031 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1032 }
1033
1034 public HttpUrl getRedirectionUrl() {
1035 return this.redirectionUrl;
1036 }
1037
1038 public void resetEverything() {
1039 resetAttemptCount(true);
1040 resetStreamId();
1041 clearIqCallbacks();
1042 this.stanzasSent = 0;
1043 mStanzaQueue.clear();
1044 this.redirectionUrl = null;
1045 synchronized (this.disco) {
1046 disco.clear();
1047 }
1048 synchronized (this.commands) {
1049 this.commands.clear();
1050 }
1051 }
1052
1053 private void sendBindRequest() {
1054 try {
1055 mXmppConnectionService.restoredFromDatabaseLatch.await();
1056 } catch (InterruptedException e) {
1057 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while waiting for DB restore during bind");
1058 return;
1059 }
1060 clearIqCallbacks();
1061 if (account.getJid().isBareJid()) {
1062 account.setResource(this.createNewResource());
1063 } else {
1064 fixResource(mXmppConnectionService, account);
1065 }
1066 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1067 final String resource = Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1068 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1069 this.sendUnmodifiedIqPacket(iq, (account, packet) -> {
1070 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1071 return;
1072 }
1073 final Element bind = packet.findChild("bind");
1074 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1075 isBound = true;
1076 final Element jid = bind.findChild("jid");
1077 if (jid != null && jid.getContent() != null) {
1078 try {
1079 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1080 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1081 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server tried to re-assign domain to " + assignedJid.getDomain());
1082 throw new StateChangingError(Account.State.BIND_FAILURE);
1083 }
1084 if (account.setJid(assignedJid)) {
1085 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": jid changed during bind. updating database");
1086 mXmppConnectionService.databaseBackend.updateAccount(account);
1087 }
1088 if (streamFeatures.hasChild("session")
1089 && !streamFeatures.findChild("session").hasChild("optional")) {
1090 sendStartSession();
1091 } else {
1092 sendPostBindInitialization();
1093 }
1094 return;
1095 } catch (final IllegalArgumentException e) {
1096 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server reported invalid jid (" + jid.getContent() + ") on bind");
1097 }
1098 } else {
1099 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure. (no jid)");
1100 }
1101 } else {
1102 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet.toString());
1103 }
1104 final Element error = packet.findChild("error");
1105 if (packet.getType() == IqPacket.TYPE.ERROR && error != null && error.hasChild("conflict")) {
1106 account.setResource(createNewResource());
1107 }
1108 throw new StateChangingError(Account.State.BIND_FAILURE);
1109 }, true);
1110 }
1111
1112 private void clearIqCallbacks() {
1113 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1114 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1115 synchronized (this.packetCallbacks) {
1116 if (this.packetCallbacks.size() == 0) {
1117 return;
1118 }
1119 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": clearing " + this.packetCallbacks.size() + " iq callbacks");
1120 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
1121 while (iterator.hasNext()) {
1122 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1123 callbacks.add(entry.second);
1124 iterator.remove();
1125 }
1126 }
1127 for (OnIqPacketReceived callback : callbacks) {
1128 try {
1129 callback.onIqPacketReceived(account, failurePacket);
1130 } catch (StateChangingError error) {
1131 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": caught StateChangingError(" + error.state.toString() + ") while clearing callbacks");
1132 //ignore
1133 }
1134 }
1135 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
1136 }
1137
1138 public void sendDiscoTimeout() {
1139 if (mWaitForDisco.compareAndSet(true, false)) {
1140 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1141 finalizeBind();
1142 }
1143 }
1144
1145 private void sendStartSession() {
1146 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": sending legacy session to outdated server");
1147 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1148 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1149 this.sendUnmodifiedIqPacket(startSession, (account, packet) -> {
1150 if (packet.getType() == IqPacket.TYPE.RESULT) {
1151 sendPostBindInitialization();
1152 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1153 throw new StateChangingError(Account.State.SESSION_FAILURE);
1154 }
1155 }, true);
1156 }
1157
1158 private void sendPostBindInitialization() {
1159 smVersion = 0;
1160 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
1161 smVersion = 3;
1162 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
1163 smVersion = 2;
1164 }
1165 if (smVersion != 0) {
1166 synchronized (this.mStanzaQueue) {
1167 final EnablePacket enable = new EnablePacket(smVersion);
1168 tagWriter.writeStanzaAsync(enable);
1169 stanzasSent = 0;
1170 mStanzaQueue.clear();
1171 }
1172 }
1173 features.carbonsEnabled = false;
1174 features.blockListRequested = false;
1175 synchronized (this.disco) {
1176 this.disco.clear();
1177 }
1178 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1179 mPendingServiceDiscoveries.set(0);
1180 if (smVersion == 0 || Patches.DISCO_EXCEPTIONS.contains(account.getJid().getDomain().toEscapedString())) {
1181 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": do not wait for service discovery");
1182 mWaitForDisco.set(false);
1183 } else {
1184 mWaitForDisco.set(true);
1185 }
1186 lastDiscoStarted = SystemClock.elapsedRealtime();
1187 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1188 Element caps = streamFeatures.findChild("c");
1189 final String hash = caps == null ? null : caps.getAttribute("hash");
1190 final String ver = caps == null ? null : caps.getAttribute("ver");
1191 ServiceDiscoveryResult discoveryResult = null;
1192 if (hash != null && ver != null) {
1193 discoveryResult = mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1194 }
1195 final boolean requestDiscoItemsFirst = !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1196 if (requestDiscoItemsFirst) {
1197 sendServiceDiscoveryItems(account.getDomain());
1198 }
1199 if (discoveryResult == null) {
1200 sendServiceDiscoveryInfo(account.getDomain());
1201 } else {
1202 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1203 disco.put(account.getDomain(), discoveryResult);
1204 }
1205 discoverMamPreferences();
1206 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1207 if (!requestDiscoItemsFirst) {
1208 sendServiceDiscoveryItems(account.getDomain());
1209 }
1210
1211 if (!mWaitForDisco.get()) {
1212 finalizeBind();
1213 }
1214 this.lastSessionStarted = SystemClock.elapsedRealtime();
1215 }
1216
1217 private void sendServiceDiscoveryInfo(final Jid jid) {
1218 mPendingServiceDiscoveries.incrementAndGet();
1219 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1220 iq.setTo(jid);
1221 iq.query("http://jabber.org/protocol/disco#info");
1222 this.sendIqPacket(iq, (account, packet) -> {
1223 if (packet.getType() == IqPacket.TYPE.RESULT) {
1224 boolean advancedStreamFeaturesLoaded;
1225 synchronized (XmppConnection.this.disco) {
1226 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1227 if (jid.equals(account.getDomain())) {
1228 mXmppConnectionService.databaseBackend.insertDiscoveryResult(result);
1229 }
1230 disco.put(jid, result);
1231 advancedStreamFeaturesLoaded = disco.containsKey(account.getDomain())
1232 && disco.containsKey(account.getJid().asBareJid());
1233 }
1234 if (advancedStreamFeaturesLoaded && (jid.equals(account.getDomain()) || jid.equals(account.getJid().asBareJid()))) {
1235 enableAdvancedStreamFeatures();
1236 }
1237 } else if (packet.getType() == IqPacket.TYPE.ERROR) {
1238 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco info for " + jid.toString());
1239 final boolean serverOrAccount = jid.equals(account.getDomain()) || jid.equals(account.getJid().asBareJid());
1240 final boolean advancedStreamFeaturesLoaded;
1241 if (serverOrAccount) {
1242 synchronized (XmppConnection.this.disco) {
1243 disco.put(jid, ServiceDiscoveryResult.empty());
1244 advancedStreamFeaturesLoaded = disco.containsKey(account.getDomain()) && disco.containsKey(account.getJid().asBareJid());
1245 }
1246 } else {
1247 advancedStreamFeaturesLoaded = false;
1248 }
1249 if (advancedStreamFeaturesLoaded) {
1250 enableAdvancedStreamFeatures();
1251 }
1252 }
1253 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1254 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1255 && mWaitForDisco.compareAndSet(true, false)) {
1256 finalizeBind();
1257 }
1258 }
1259 });
1260 }
1261
1262 private void discoverMamPreferences() {
1263 IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1264 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1265 sendIqPacket(request, (account, response) -> {
1266 if (response.getType() == IqPacket.TYPE.RESULT) {
1267 Element prefs = response.findChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1268 isMamPreferenceAlways = "always".equals(prefs == null ? null : prefs.getAttribute("default"));
1269 }
1270 });
1271 }
1272
1273 private void discoverCommands() {
1274 final IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1275 request.setTo(account.getDomain());
1276 request.addChild("query", Namespace.DISCO_ITEMS).setAttribute("node", Namespace.COMMANDS);
1277 sendIqPacket(request, (account, response) -> {
1278 if (response.getType() == IqPacket.TYPE.RESULT) {
1279 final Element query = response.findChild("query", Namespace.DISCO_ITEMS);
1280 if (query == null) {
1281 return;
1282 }
1283 final HashMap<String, Jid> commands = new HashMap<>();
1284 for (final Element child : query.getChildren()) {
1285 if ("item".equals(child.getName())) {
1286 final String node = child.getAttribute("node");
1287 final Jid jid = child.getAttributeAsJid("jid");
1288 if (node != null && jid != null) {
1289 commands.put(node, jid);
1290 }
1291 }
1292 }
1293 Log.d(Config.LOGTAG, commands.toString());
1294 synchronized (this.commands) {
1295 this.commands.clear();
1296 this.commands.putAll(commands);
1297 }
1298 }
1299 });
1300 }
1301
1302 public boolean isMamPreferenceAlways() {
1303 return isMamPreferenceAlways;
1304 }
1305
1306 private void finalizeBind() {
1307 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
1308 if (bindListener != null) {
1309 bindListener.onBind(account);
1310 }
1311 changeStatus(Account.State.ONLINE);
1312 }
1313
1314 private void enableAdvancedStreamFeatures() {
1315 if (getFeatures().blocking() && !features.blockListRequested) {
1316 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
1317 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1318 }
1319 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1320 listener.onAdvancedStreamFeaturesAvailable(account);
1321 }
1322 if (getFeatures().carbons() && !features.carbonsEnabled) {
1323 sendEnableCarbons();
1324 }
1325 if (getFeatures().commands()) {
1326 discoverCommands();
1327 }
1328 }
1329
1330 private void sendServiceDiscoveryItems(final Jid server) {
1331 mPendingServiceDiscoveries.incrementAndGet();
1332 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1333 iq.setTo(server.getDomain());
1334 iq.query("http://jabber.org/protocol/disco#items");
1335 this.sendIqPacket(iq, (account, packet) -> {
1336 if (packet.getType() == IqPacket.TYPE.RESULT) {
1337 final HashSet<Jid> items = new HashSet<>();
1338 final List<Element> elements = packet.query().getChildren();
1339 for (final Element element : elements) {
1340 if (element.getName().equals("item")) {
1341 final Jid jid = InvalidJid.getNullForInvalid(element.getAttributeAsJid("jid"));
1342 if (jid != null && !jid.equals(account.getDomain())) {
1343 items.add(jid);
1344 }
1345 }
1346 }
1347 for (Jid jid : items) {
1348 sendServiceDiscoveryInfo(jid);
1349 }
1350 } else {
1351 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco items of " + server);
1352 }
1353 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1354 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1355 && mWaitForDisco.compareAndSet(true, false)) {
1356 finalizeBind();
1357 }
1358 }
1359 });
1360 }
1361
1362 private void sendEnableCarbons() {
1363 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1364 iq.addChild("enable", "urn:xmpp:carbons:2");
1365 this.sendIqPacket(iq, (account, packet) -> {
1366 if (!packet.hasChild("error")) {
1367 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1368 + ": successfully enabled carbons");
1369 features.carbonsEnabled = true;
1370 } else {
1371 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1372 + ": error enableing carbons " + packet.toString());
1373 }
1374 });
1375 }
1376
1377 private void processStreamError(final Tag currentTag) throws IOException {
1378 final Element streamError = tagReader.readElement(currentTag);
1379 if (streamError == null) {
1380 return;
1381 }
1382 if (streamError.hasChild("conflict")) {
1383 account.setResource(createNewResource());
1384 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": switching resource due to conflict (" + account.getResource() + ")");
1385 throw new IOException();
1386 } else if (streamError.hasChild("host-unknown")) {
1387 throw new StateChangingException(Account.State.HOST_UNKNOWN);
1388 } else if (streamError.hasChild("policy-violation")) {
1389 this.lastConnect = SystemClock.elapsedRealtime();
1390 final String text = streamError.findChildContent("text");
1391 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": policy violation. " + text);
1392 failPendingMessages(text);
1393 throw new StateChangingException(Account.State.POLICY_VIOLATION);
1394 } else {
1395 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError.toString());
1396 throw new StateChangingException(Account.State.STREAM_ERROR);
1397 }
1398 }
1399
1400 private void failPendingMessages(final String error) {
1401 synchronized (this.mStanzaQueue) {
1402 for (int i = 0; i < mStanzaQueue.size(); ++i) {
1403 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
1404 if (stanza instanceof MessagePacket) {
1405 final MessagePacket packet = (MessagePacket) stanza;
1406 final String id = packet.getId();
1407 final Jid to = packet.getTo();
1408 mXmppConnectionService.markMessage(account,
1409 to.asBareJid(),
1410 id,
1411 Message.STATUS_SEND_FAILED,
1412 error);
1413 }
1414 }
1415 }
1416 }
1417
1418 private void sendStartStream() throws IOException {
1419 final Tag stream = Tag.start("stream:stream");
1420 stream.setAttribute("to", account.getServer());
1421 stream.setAttribute("version", "1.0");
1422 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
1423 stream.setAttribute("xmlns", "jabber:client");
1424 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1425 tagWriter.writeTag(stream);
1426 }
1427
1428 private String createNewResource() {
1429 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
1430 }
1431
1432 private String nextRandomId() {
1433 return nextRandomId(false);
1434 }
1435
1436 private String nextRandomId(boolean s) {
1437 return CryptoHelper.random(s ? 3 : 9, mXmppConnectionService.getRNG());
1438 }
1439
1440 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1441 packet.setFrom(account.getJid());
1442 return this.sendUnmodifiedIqPacket(packet, callback, false);
1443 }
1444
1445 public synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
1446 if (packet.getId() == null) {
1447 packet.setAttribute("id", nextRandomId());
1448 }
1449 if (callback != null) {
1450 synchronized (this.packetCallbacks) {
1451 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1452 }
1453 }
1454 this.sendPacket(packet, force);
1455 return packet.getId();
1456 }
1457
1458 public void sendMessagePacket(final MessagePacket packet) {
1459 this.sendPacket(packet);
1460 }
1461
1462 public void sendPresencePacket(final PresencePacket packet) {
1463 this.sendPacket(packet);
1464 }
1465
1466 private synchronized void sendPacket(final AbstractStanza packet) {
1467 sendPacket(packet, false);
1468 }
1469
1470 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
1471 if (stanzasSent == Integer.MAX_VALUE) {
1472 resetStreamId();
1473 disconnect(true);
1474 return;
1475 }
1476 synchronized (this.mStanzaQueue) {
1477 if (force || isBound) {
1478 tagWriter.writeStanzaAsync(packet);
1479 } else {
1480 Log.d(Config.LOGTAG, account.getJid().asBareJid() + " do not write stanza to unbound stream " + packet.toString());
1481 }
1482 if (packet instanceof AbstractAcknowledgeableStanza) {
1483 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1484
1485 if (this.mStanzaQueue.size() != 0) {
1486 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
1487 if (currentHighestKey != stanzasSent) {
1488 throw new AssertionError("Stanza count messed up");
1489 }
1490 }
1491
1492 ++stanzasSent;
1493 this.mStanzaQueue.append(stanzasSent, stanza);
1494 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
1495 if (Config.EXTENDED_SM_LOGGING) {
1496 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1497 }
1498 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1499 }
1500 }
1501 }
1502 }
1503
1504 public void sendPing() {
1505 if (!r()) {
1506 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1507 iq.setFrom(account.getJid());
1508 iq.addChild("ping", Namespace.PING);
1509 this.sendIqPacket(iq, null);
1510 }
1511 this.lastPingSent = SystemClock.elapsedRealtime();
1512 }
1513
1514 public void setOnMessagePacketReceivedListener(
1515 final OnMessagePacketReceived listener) {
1516 this.messageListener = listener;
1517 }
1518
1519 public void setOnUnregisteredIqPacketReceivedListener(
1520 final OnIqPacketReceived listener) {
1521 this.unregisteredIqListener = listener;
1522 }
1523
1524 public void setOnPresencePacketReceivedListener(
1525 final OnPresencePacketReceived listener) {
1526 this.presenceListener = listener;
1527 }
1528
1529 public void setOnJinglePacketReceivedListener(
1530 final OnJinglePacketReceived listener) {
1531 this.jingleListener = listener;
1532 }
1533
1534 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1535 this.statusListener = listener;
1536 }
1537
1538 public void setOnBindListener(final OnBindListener listener) {
1539 this.bindListener = listener;
1540 }
1541
1542 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1543 this.acknowledgedListener = listener;
1544 }
1545
1546 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1547 this.advancedStreamFeaturesLoadedListeners.add(listener);
1548 }
1549
1550 private void forceCloseSocket() {
1551 FileBackend.close(this.socket);
1552 FileBackend.close(this.tagReader);
1553 }
1554
1555 public void interrupt() {
1556 if (this.mThread != null) {
1557 this.mThread.interrupt();
1558 }
1559 }
1560
1561 public void disconnect(final boolean force) {
1562 interrupt();
1563 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
1564 if (force) {
1565 forceCloseSocket();
1566 } else {
1567 final TagWriter currentTagWriter = this.tagWriter;
1568 if (currentTagWriter.isActive()) {
1569 currentTagWriter.finish();
1570 final Socket currentSocket = this.socket;
1571 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
1572 try {
1573 currentTagWriter.await(1, TimeUnit.SECONDS);
1574 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
1575 currentTagWriter.writeTag(Tag.end("stream:stream"));
1576 if (streamCountDownLatch != null) {
1577 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
1578 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote ended stream");
1579 } else {
1580 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote has not closed socket. force closing");
1581 }
1582 }
1583 } catch (InterruptedException e) {
1584 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while gracefully closing stream");
1585 } catch (final IOException e) {
1586 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": io exception during disconnect (" + e.getMessage() + ")");
1587 } finally {
1588 FileBackend.close(currentSocket);
1589 }
1590 } else {
1591 forceCloseSocket();
1592 }
1593 }
1594 }
1595
1596 private void resetStreamId() {
1597 this.streamId = null;
1598 }
1599
1600 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
1601 synchronized (this.disco) {
1602 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
1603 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
1604 if (cursor.getValue().getFeatures().contains(feature)) {
1605 items.add(cursor);
1606 }
1607 }
1608 return items;
1609 }
1610 }
1611
1612 public Jid findDiscoItemByFeature(final String feature) {
1613 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
1614 if (items.size() >= 1) {
1615 return items.get(0).getKey();
1616 }
1617 return null;
1618 }
1619
1620 public boolean r() {
1621 if (getFeatures().sm()) {
1622 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1623 return true;
1624 } else {
1625 return false;
1626 }
1627 }
1628
1629 public List<String> getMucServersWithholdAccount() {
1630 final List<String> servers = getMucServers();
1631 servers.remove(account.getDomain().toEscapedString());
1632 return servers;
1633 }
1634
1635 public List<String> getMucServers() {
1636 List<String> servers = new ArrayList<>();
1637 synchronized (this.disco) {
1638 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
1639 final ServiceDiscoveryResult value = cursor.getValue();
1640 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
1641 && value.hasIdentity("conference", "text")
1642 && !value.getFeatures().contains("jabber:iq:gateway")
1643 && !value.hasIdentity("conference", "irc")) {
1644 servers.add(cursor.getKey().toString());
1645 }
1646 }
1647 }
1648 return servers;
1649 }
1650
1651 public String getMucServer() {
1652 List<String> servers = getMucServers();
1653 return servers.size() > 0 ? servers.get(0) : null;
1654 }
1655
1656 public int getTimeToNextAttempt() {
1657 final int additionalTime = account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
1658 final int interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
1659 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1660 return interval - secondsSinceLast;
1661 }
1662
1663 public int getAttempt() {
1664 return this.attempt;
1665 }
1666
1667 public Features getFeatures() {
1668 return this.features;
1669 }
1670
1671 public long getLastSessionEstablished() {
1672 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1673 return System.currentTimeMillis() - diff;
1674 }
1675
1676 public long getLastConnect() {
1677 return this.lastConnect;
1678 }
1679
1680 public long getLastPingSent() {
1681 return this.lastPingSent;
1682 }
1683
1684 public long getLastDiscoStarted() {
1685 return this.lastDiscoStarted;
1686 }
1687
1688 public long getLastPacketReceived() {
1689 return this.lastPacketReceived;
1690 }
1691
1692 public void sendActive() {
1693 this.sendPacket(new ActivePacket());
1694 }
1695
1696 public void sendInactive() {
1697 this.sendPacket(new InactivePacket());
1698 }
1699
1700 public void resetAttemptCount(boolean resetConnectTime) {
1701 this.attempt = 0;
1702 if (resetConnectTime) {
1703 this.lastConnect = 0;
1704 }
1705 }
1706
1707 public void setInteractive(boolean interactive) {
1708 this.mInteractive = interactive;
1709 }
1710
1711 public Identity getServerIdentity() {
1712 synchronized (this.disco) {
1713 ServiceDiscoveryResult result = disco.get(account.getJid().getDomain());
1714 if (result == null) {
1715 return Identity.UNKNOWN;
1716 }
1717 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
1718 if (id.getType().equals("im") && id.getCategory().equals("server") && id.getName() != null) {
1719 switch (id.getName()) {
1720 case "Prosody":
1721 return Identity.PROSODY;
1722 case "ejabberd":
1723 return Identity.EJABBERD;
1724 case "Slack-XMPP":
1725 return Identity.SLACK;
1726 }
1727 }
1728 }
1729 }
1730 return Identity.UNKNOWN;
1731 }
1732
1733 private IqGenerator getIqGenerator() {
1734 return mXmppConnectionService.getIqGenerator();
1735 }
1736
1737 public enum Identity {
1738 FACEBOOK,
1739 SLACK,
1740 EJABBERD,
1741 PROSODY,
1742 NIMBUZZ,
1743 UNKNOWN
1744 }
1745
1746 private class MyKeyManager implements X509KeyManager {
1747 @Override
1748 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
1749 return account.getPrivateKeyAlias();
1750 }
1751
1752 @Override
1753 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
1754 return null;
1755 }
1756
1757 @Override
1758 public X509Certificate[] getCertificateChain(String alias) {
1759 Log.d(Config.LOGTAG, "getting certificate chain");
1760 try {
1761 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
1762 } catch (Exception e) {
1763 Log.d(Config.LOGTAG, e.getMessage());
1764 return new X509Certificate[0];
1765 }
1766 }
1767
1768 @Override
1769 public String[] getClientAliases(String s, Principal[] principals) {
1770 final String alias = account.getPrivateKeyAlias();
1771 return alias != null ? new String[]{alias} : new String[0];
1772 }
1773
1774 @Override
1775 public String[] getServerAliases(String s, Principal[] principals) {
1776 return new String[0];
1777 }
1778
1779 @Override
1780 public PrivateKey getPrivateKey(String alias) {
1781 try {
1782 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
1783 } catch (Exception e) {
1784 return null;
1785 }
1786 }
1787 }
1788
1789 private static class StateChangingError extends Error {
1790 private final Account.State state;
1791
1792 public StateChangingError(Account.State state) {
1793 this.state = state;
1794 }
1795 }
1796
1797 private static class StateChangingException extends IOException {
1798 private final Account.State state;
1799
1800 public StateChangingException(Account.State state) {
1801 this.state = state;
1802 }
1803 }
1804
1805 public class Features {
1806 XmppConnection connection;
1807 private boolean carbonsEnabled = false;
1808 private boolean encryptionEnabled = false;
1809 private boolean blockListRequested = false;
1810
1811 public Features(final XmppConnection connection) {
1812 this.connection = connection;
1813 }
1814
1815 private boolean hasDiscoFeature(final Jid server, final String feature) {
1816 synchronized (XmppConnection.this.disco) {
1817 return connection.disco.containsKey(server) &&
1818 connection.disco.get(server).getFeatures().contains(feature);
1819 }
1820 }
1821
1822 public boolean carbons() {
1823 return hasDiscoFeature(account.getDomain(), "urn:xmpp:carbons:2");
1824 }
1825
1826 public boolean commands() {
1827 return hasDiscoFeature(account.getDomain(), Namespace.COMMANDS);
1828 }
1829
1830 public boolean easyOnboardingInvites() {
1831 synchronized (commands) {
1832 return commands.containsKey(Namespace.EASY_ONBOARDING_INVITE);
1833 }
1834 }
1835
1836 public boolean bookmarksConversion() {
1837 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION) && pepPublishOptions();
1838 }
1839
1840 public boolean avatarConversion() {
1841 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.AVATAR_CONVERSION) && pepPublishOptions();
1842 }
1843
1844 public boolean blocking() {
1845 return hasDiscoFeature(account.getDomain(), Namespace.BLOCKING);
1846 }
1847
1848 public boolean spamReporting() {
1849 return hasDiscoFeature(account.getDomain(), "urn:xmpp:reporting:reason:spam:0");
1850 }
1851
1852 public boolean flexibleOfflineMessageRetrieval() {
1853 return hasDiscoFeature(account.getDomain(), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
1854 }
1855
1856 public boolean register() {
1857 return hasDiscoFeature(account.getDomain(), Namespace.REGISTER);
1858 }
1859
1860 public boolean invite() {
1861 return connection.streamFeatures != null && connection.streamFeatures.hasChild("register", Namespace.INVITE);
1862 }
1863
1864 public boolean sm() {
1865 return streamId != null
1866 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1867 }
1868
1869 public boolean csi() {
1870 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1871 }
1872
1873 public boolean pep() {
1874 synchronized (XmppConnection.this.disco) {
1875 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1876 return info != null && info.hasIdentity("pubsub", "pep");
1877 }
1878 }
1879
1880 public boolean pepPersistent() {
1881 synchronized (XmppConnection.this.disco) {
1882 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1883 return info != null && info.getFeatures().contains("http://jabber.org/protocol/pubsub#persistent-items");
1884 }
1885 }
1886
1887 public boolean pepPublishOptions() {
1888 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
1889 }
1890
1891 public boolean pepOmemoWhitelisted() {
1892 return hasDiscoFeature(account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
1893 }
1894
1895 public boolean mam() {
1896 return MessageArchiveService.Version.has(getAccountFeatures());
1897 }
1898
1899 public List<String> getAccountFeatures() {
1900 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
1901 return result == null ? Collections.emptyList() : result.getFeatures();
1902 }
1903
1904 public boolean push() {
1905 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
1906 || hasDiscoFeature(account.getDomain(), Namespace.PUSH);
1907 }
1908
1909 public boolean rosterVersioning() {
1910 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1911 }
1912
1913 public void setBlockListRequested(boolean value) {
1914 this.blockListRequested = value;
1915 }
1916
1917 public boolean httpUpload(long filesize) {
1918 if (Config.DISABLE_HTTP_UPLOAD) {
1919 return false;
1920 } else {
1921 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1922 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1923 if (items.size() > 0) {
1924 try {
1925 long maxsize = Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1926 if (filesize <= maxsize) {
1927 return true;
1928 } else {
1929 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": http upload is not available for files with size " + filesize + " (max is " + maxsize + ")");
1930 return false;
1931 }
1932 } catch (Exception e) {
1933 return true;
1934 }
1935 }
1936 }
1937 return false;
1938 }
1939 }
1940
1941 public boolean useLegacyHttpUpload() {
1942 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
1943 }
1944
1945 public long getMaxHttpUploadSize() {
1946 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1947 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1948 if (items.size() > 0) {
1949 try {
1950 return Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1951 } catch (Exception e) {
1952 //ignored
1953 }
1954 }
1955 }
1956 return -1;
1957 }
1958
1959 public boolean stanzaIds() {
1960 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
1961 }
1962
1963 public boolean bookmarks2() {
1964 return Config.USE_BOOKMARKS2 /* || hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS2_COMPAT)*/;
1965 }
1966
1967 public boolean externalServiceDiscovery() {
1968 return hasDiscoFeature(account.getDomain(), Namespace.EXTERNAL_SERVICE_DISCOVERY);
1969 }
1970 }
1971}