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.SSLSocket;
50import javax.net.ssl.SSLSocketFactory;
51import javax.net.ssl.X509KeyManager;
52import javax.net.ssl.X509TrustManager;
53
54import eu.siacs.conversations.Config;
55import eu.siacs.conversations.R;
56import eu.siacs.conversations.crypto.DomainHostnameVerifier;
57import eu.siacs.conversations.crypto.XmppDomainVerifier;
58import eu.siacs.conversations.crypto.axolotl.AxolotlService;
59import eu.siacs.conversations.crypto.sasl.Anonymous;
60import eu.siacs.conversations.crypto.sasl.DigestMd5;
61import eu.siacs.conversations.crypto.sasl.External;
62import eu.siacs.conversations.crypto.sasl.Plain;
63import eu.siacs.conversations.crypto.sasl.SaslMechanism;
64import eu.siacs.conversations.crypto.sasl.ScramSha1;
65import eu.siacs.conversations.crypto.sasl.ScramSha256;
66import eu.siacs.conversations.crypto.sasl.ScramSha512;
67import eu.siacs.conversations.entities.Account;
68import eu.siacs.conversations.entities.Message;
69import eu.siacs.conversations.entities.ServiceDiscoveryResult;
70import eu.siacs.conversations.generator.IqGenerator;
71import eu.siacs.conversations.http.HttpConnectionManager;
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.jingle.OnJinglePacketReceived;
91import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
92import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
93import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
94import eu.siacs.conversations.xmpp.stanzas.IqPacket;
95import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
96import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
97import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
98import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
99import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
100import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
101import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
102import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
103import okhttp3.HttpUrl;
104
105public class XmppConnection implements Runnable {
106
107 private static final int PACKET_IQ = 0;
108 private static final int PACKET_MESSAGE = 1;
109 private static final int PACKET_PRESENCE = 2;
110 public final OnIqPacketReceived registrationResponseListener = (account, packet) -> {
111 if (packet.getType() == IqPacket.TYPE.RESULT) {
112 account.setOption(Account.OPTION_REGISTER, false);
113 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": successfully registered new account on server");
114 throw new StateChangingError(Account.State.REGISTRATION_SUCCESSFUL);
115 } else {
116 final List<String> PASSWORD_TOO_WEAK_MSGS = Arrays.asList(
117 "The password is too weak",
118 "Please use a longer password.");
119 Element error = packet.findChild("error");
120 Account.State state = Account.State.REGISTRATION_FAILED;
121 if (error != null) {
122 if (error.hasChild("conflict")) {
123 state = Account.State.REGISTRATION_CONFLICT;
124 } else if (error.hasChild("resource-constraint")
125 && "wait".equals(error.getAttribute("type"))) {
126 state = Account.State.REGISTRATION_PLEASE_WAIT;
127 } else if (error.hasChild("not-acceptable")
128 && PASSWORD_TOO_WEAK_MSGS.contains(error.findChildContent("text"))) {
129 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
130 }
131 }
132 throw new StateChangingError(state);
133 }
134 };
135 protected final Account account;
136 private final Features features = new Features(this);
137 private final HashMap<Jid, ServiceDiscoveryResult> disco = new HashMap<>();
138 private final HashMap<String, Jid> commands = new HashMap<>();
139 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
140 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
141 private final Set<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new HashSet<>();
142 private final XmppConnectionService mXmppConnectionService;
143 private Socket socket;
144 private XmlReader tagReader;
145 private TagWriter tagWriter = new TagWriter();
146 private boolean shouldAuthenticate = true;
147 private boolean inSmacksSession = false;
148 private boolean isBound = false;
149 private Element streamFeatures;
150 private String streamId = null;
151 private int smVersion = 3;
152 private int stanzasReceived = 0;
153 private int stanzasSent = 0;
154 private long lastPacketReceived = 0;
155 private long lastPingSent = 0;
156 private long lastConnect = 0;
157 private long lastSessionStarted = 0;
158 private long lastDiscoStarted = 0;
159 private boolean isMamPreferenceAlways = false;
160 private final AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
161 private final AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
162 private final AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
163 private final AtomicInteger mSmCatchupMessageCounter = new AtomicInteger(0);
164 private boolean mInteractive = false;
165 private int attempt = 0;
166 private OnPresencePacketReceived presenceListener = null;
167 private OnJinglePacketReceived jingleListener = null;
168 private OnIqPacketReceived unregisteredIqListener = null;
169 private OnMessagePacketReceived messageListener = null;
170 private OnStatusChanged statusListener = null;
171 private OnBindListener bindListener = null;
172 private OnMessageAcknowledged acknowledgedListener = null;
173 private SaslMechanism saslMechanism;
174 private HttpUrl redirectionUrl = null;
175 private String verifiedHostname = null;
176 private volatile Thread mThread;
177 private CountDownLatch mStreamCountDownLatch;
178
179
180 public XmppConnection(final Account account, final XmppConnectionService service) {
181 this.account = account;
182 this.mXmppConnectionService = service;
183 }
184
185 private static void fixResource(Context context, Account account) {
186 String resource = account.getResource();
187 int fixedPartLength = context.getString(R.string.app_name).length() + 1; //include the trailing dot
188 int randomPartLength = 4; // 3 bytes
189 if (resource != null && resource.length() > fixedPartLength + randomPartLength) {
190 if (validBase64(resource.substring(fixedPartLength, fixedPartLength + randomPartLength))) {
191 account.setResource(resource.substring(0, fixedPartLength + randomPartLength));
192 }
193 }
194 }
195
196 private static boolean validBase64(String input) {
197 try {
198 return Base64.decode(input, Base64.URL_SAFE).length == 3;
199 } catch (Throwable throwable) {
200 return false;
201 }
202 }
203
204 private void changeStatus(final Account.State nextStatus) {
205 synchronized (this) {
206 if (Thread.currentThread().isInterrupted()) {
207 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not changing status to " + nextStatus + " because thread was interrupted");
208 return;
209 }
210 if (account.getStatus() != nextStatus) {
211 if ((nextStatus == Account.State.OFFLINE)
212 && (account.getStatus() != Account.State.CONNECTING)
213 && (account.getStatus() != Account.State.ONLINE)
214 && (account.getStatus() != Account.State.DISABLED)) {
215 return;
216 }
217 if (nextStatus == Account.State.ONLINE) {
218 this.attempt = 0;
219 }
220 account.setStatus(nextStatus);
221 } else {
222 return;
223 }
224 }
225 if (statusListener != null) {
226 statusListener.onStatusChanged(account);
227 }
228 }
229
230 public Jid getJidForCommand(final String node) {
231 synchronized (this.commands) {
232 return this.commands.get(node);
233 }
234 }
235
236 public void prepareNewConnection() {
237 this.lastConnect = SystemClock.elapsedRealtime();
238 this.lastPingSent = SystemClock.elapsedRealtime();
239 this.lastDiscoStarted = Long.MAX_VALUE;
240 this.mWaitingForSmCatchup.set(false);
241 this.changeStatus(Account.State.CONNECTING);
242 }
243
244 public boolean isWaitingForSmCatchup() {
245 return mWaitingForSmCatchup.get();
246 }
247
248 public void incrementSmCatchupMessageCounter() {
249 this.mSmCatchupMessageCounter.incrementAndGet();
250 }
251
252 protected void connect() {
253 if (mXmppConnectionService.areMessagesInitialized()) {
254 mXmppConnectionService.resetSendingToWaiting(account);
255 }
256 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
257 features.encryptionEnabled = false;
258 inSmacksSession = false;
259 isBound = false;
260 this.attempt++;
261 this.verifiedHostname = null; //will be set if user entered hostname is being used or hostname was verified with dnssec
262 try {
263 Socket localSocket;
264 shouldAuthenticate = !account.isOptionSet(Account.OPTION_REGISTER);
265 this.changeStatus(Account.State.CONNECTING);
266 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
267 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
268 if (useTor) {
269 String destination;
270 if (account.getHostname().isEmpty() || account.isOnion()) {
271 destination = account.getServer();
272 } else {
273 destination = account.getHostname();
274 this.verifiedHostname = destination;
275 }
276
277 final int port = account.getPort();
278 final boolean directTls = Resolver.useDirectTls(port);
279
280 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": connect to " + destination + " via Tor. directTls=" + directTls);
281 localSocket = SocksSocketFactory.createSocketOverTor(destination, port);
282
283 if (directTls) {
284 localSocket = upgradeSocketToTls(localSocket);
285 features.encryptionEnabled = true;
286 }
287
288 try {
289 startXmpp(localSocket);
290 } catch (InterruptedException e) {
291 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
292 return;
293 } catch (Exception e) {
294 throw new IOException(e.getMessage());
295 }
296 } else {
297 final String domain = account.getServer();
298 final List<Resolver.Result> results;
299 final boolean hardcoded = extended && !account.getHostname().isEmpty();
300 if (hardcoded) {
301 results = Resolver.fromHardCoded(account.getHostname(), account.getPort());
302 } else {
303 results = Resolver.resolve(domain);
304 }
305 if (Thread.currentThread().isInterrupted()) {
306 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
307 return;
308 }
309 if (results.size() == 0) {
310 Log.e(Config.LOGTAG, account.getJid().asBareJid() + ": Resolver results were empty");
311 return;
312 }
313 final Resolver.Result storedBackupResult;
314 if (hardcoded) {
315 storedBackupResult = null;
316 } else {
317 storedBackupResult = mXmppConnectionService.databaseBackend.findResolverResult(domain);
318 if (storedBackupResult != null && !results.contains(storedBackupResult)) {
319 results.add(storedBackupResult);
320 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": loaded backup resolver result from db: " + storedBackupResult);
321 }
322 }
323 for (Iterator<Resolver.Result> iterator = results.iterator(); iterator.hasNext(); ) {
324 final Resolver.Result result = iterator.next();
325 if (Thread.currentThread().isInterrupted()) {
326 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
327 return;
328 }
329 try {
330 // if tls is true, encryption is implied and must not be started
331 features.encryptionEnabled = result.isDirectTls();
332 verifiedHostname = result.isAuthenticated() ? result.getHostname().toString() : null;
333 Log.d(Config.LOGTAG, "verified hostname " + verifiedHostname);
334 final InetSocketAddress addr;
335 if (result.getIp() != null) {
336 addr = new InetSocketAddress(result.getIp(), result.getPort());
337 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
338 + ": using values from resolver " + (result.getHostname() == null ? "" : result.getHostname().toString()
339 + "/") + result.getIp().getHostAddress() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
340 } else {
341 addr = new InetSocketAddress(IDN.toASCII(result.getHostname().toString()), result.getPort());
342 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
343 + ": using values from resolver "
344 + result.getHostname().toString() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
345 }
346
347 localSocket = new Socket();
348 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
349
350 if (features.encryptionEnabled) {
351 localSocket = upgradeSocketToTls(localSocket);
352 }
353
354 localSocket.setSoTimeout(Config.SOCKET_TIMEOUT * 1000);
355 if (startXmpp(localSocket)) {
356 localSocket.setSoTimeout(0); //reset to 0; once the connection is established we don’t want this
357 if (!hardcoded && !result.equals(storedBackupResult)) {
358 mXmppConnectionService.databaseBackend.saveResolverResult(domain, result);
359 }
360 break; // successfully connected to server that speaks xmpp
361 } else {
362 FileBackend.close(localSocket);
363 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
364 }
365 } catch (final StateChangingException e) {
366 if (!iterator.hasNext()) {
367 throw e;
368 }
369 } catch (InterruptedException e) {
370 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
371 return;
372 } catch (final Throwable e) {
373 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage() + "(" + e.getClass().getName() + ")");
374 if (!iterator.hasNext()) {
375 throw new UnknownHostException();
376 }
377 }
378 }
379 }
380 processStream();
381 } catch (final SecurityException e) {
382 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
383 } catch (final StateChangingException e) {
384 this.changeStatus(e.state);
385 } catch (final UnknownHostException | ConnectException | SocksSocketFactory.HostNotFoundException e) {
386 this.changeStatus(Account.State.SERVER_NOT_FOUND);
387 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
388 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
389 } catch (final IOException | XmlPullParserException e) {
390 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
391 this.changeStatus(Account.State.OFFLINE);
392 this.attempt = Math.max(0, this.attempt - 1);
393 } finally {
394 if (!Thread.currentThread().isInterrupted()) {
395 forceCloseSocket();
396 } else {
397 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not force closing socket because thread was interrupted");
398 }
399 }
400 }
401
402 /**
403 * Starts xmpp protocol, call after connecting to socket
404 *
405 * @return true if server returns with valid xmpp, false otherwise
406 */
407 private boolean startXmpp(Socket socket) throws Exception {
408 if (Thread.currentThread().isInterrupted()) {
409 throw new InterruptedException();
410 }
411 this.socket = socket;
412 tagReader = new XmlReader();
413 if (tagWriter != null) {
414 tagWriter.forceClose();
415 }
416 tagWriter = new TagWriter();
417 tagWriter.setOutputStream(socket.getOutputStream());
418 tagReader.setInputStream(socket.getInputStream());
419 tagWriter.beginDocument();
420 sendStartStream();
421 final Tag tag = tagReader.readTag();
422 if (Thread.currentThread().isInterrupted()) {
423 throw new InterruptedException();
424 }
425 if (socket instanceof SSLSocket) {
426 SSLSocketHelper.log(account, (SSLSocket) socket);
427 }
428 return tag != null && tag.isStart("stream");
429 }
430
431 private TlsFactoryVerifier getTlsFactoryVerifier() throws NoSuchAlgorithmException, KeyManagementException, IOException {
432 final SSLContext sc = SSLSocketHelper.getSSLContext();
433 final MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
434 final KeyManager[] keyManager;
435 if (account.getPrivateKeyAlias() != null) {
436 keyManager = new KeyManager[]{new MyKeyManager()};
437 } else {
438 keyManager = null;
439 }
440 final String domain = account.getServer();
441 sc.init(keyManager, new X509TrustManager[]{mInteractive ? trustManager.getInteractive(domain) : trustManager.getNonInteractive(domain)}, mXmppConnectionService.getRNG());
442 final SSLSocketFactory factory = sc.getSocketFactory();
443 final DomainHostnameVerifier verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier(), mInteractive);
444 return new TlsFactoryVerifier(factory, verifier);
445 }
446
447 @Override
448 public void run() {
449 synchronized (this) {
450 this.mThread = Thread.currentThread();
451 if (this.mThread.isInterrupted()) {
452 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": aborting connect because thread was interrupted");
453 return;
454 }
455 forceCloseSocket();
456 }
457 connect();
458 }
459
460 private void processStream() throws XmlPullParserException, IOException {
461 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
462 this.mStreamCountDownLatch = streamCountDownLatch;
463 Tag nextTag = tagReader.readTag();
464 while (nextTag != null && !nextTag.isEnd("stream")) {
465 if (nextTag.isStart("error")) {
466 processStreamError(nextTag);
467 } else if (nextTag.isStart("features")) {
468 processStreamFeatures(nextTag);
469 } else if (nextTag.isStart("proceed")) {
470 switchOverToTls();
471 } else if (nextTag.isStart("success")) {
472 final String challenge = tagReader.readElement(nextTag).getContent();
473 try {
474 saslMechanism.getResponse(challenge);
475 } catch (final SaslMechanism.AuthenticationException e) {
476 Log.e(Config.LOGTAG, String.valueOf(e));
477 throw new StateChangingException(Account.State.UNAUTHORIZED);
478 }
479 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": logged in");
480 account.setKey(Account.PINNED_MECHANISM_KEY,
481 String.valueOf(saslMechanism.getPriority()));
482 tagReader.reset();
483 sendStartStream();
484 final Tag tag = tagReader.readTag();
485 if (tag != null && tag.isStart("stream")) {
486 processStream();
487 } else {
488 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
489 }
490 break;
491 } else if (nextTag.isStart("failure")) {
492 final Element failure = tagReader.readElement(nextTag);
493 if (Namespace.SASL.equals(failure.getNamespace())) {
494 final String text = failure.findChildContent("text");
495 if (failure.hasChild("account-disabled") && text != null) {
496 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
497 if (matcher.find()) {
498 final HttpUrl url;
499 try {
500 url = HttpUrl.get(text.substring(matcher.start(), matcher.end()));
501 if (url.isHttps()) {
502 this.redirectionUrl = url;
503 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
504 }
505 } catch (IllegalArgumentException e) {
506 throw new StateChangingException(Account.State.UNAUTHORIZED);
507 }
508 }
509 }
510 throw new StateChangingException(Account.State.UNAUTHORIZED);
511 } else if (Namespace.TLS.equals(failure.getNamespace())) {
512 throw new StateChangingException(Account.State.TLS_ERROR);
513 } else {
514 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
515 }
516 } else if (nextTag.isStart("challenge")) {
517 final String challenge = tagReader.readElement(nextTag).getContent();
518 final Element response = new Element("response", Namespace.SASL);
519 try {
520 response.setContent(saslMechanism.getResponse(challenge));
521 } catch (final SaslMechanism.AuthenticationException e) {
522 // TODO: Send auth abort tag.
523 Log.e(Config.LOGTAG, e.toString());
524 }
525 tagWriter.writeElement(response);
526 } else if (nextTag.isStart("enabled")) {
527 final Element enabled = tagReader.readElement(nextTag);
528 if ("true".equals(enabled.getAttribute("resume"))) {
529 this.streamId = enabled.getAttribute("id");
530 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
531 + ": stream management(" + smVersion
532 + ") enabled (resumable)");
533 } else {
534 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
535 + ": stream management(" + smVersion + ") enabled");
536 }
537 this.stanzasReceived = 0;
538 this.inSmacksSession = true;
539 final RequestPacket r = new RequestPacket(smVersion);
540 tagWriter.writeStanzaAsync(r);
541 } else if (nextTag.isStart("resumed")) {
542 this.inSmacksSession = true;
543 this.isBound = true;
544 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
545 lastPacketReceived = SystemClock.elapsedRealtime();
546 final Element resumed = tagReader.readElement(nextTag);
547 final String h = resumed.getAttribute("h");
548 try {
549 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
550 final boolean acknowledgedMessages;
551 synchronized (this.mStanzaQueue) {
552 final int serverCount = Integer.parseInt(h);
553 if (serverCount < stanzasSent) {
554 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
555 + ": session resumed with lost packages");
556 stanzasSent = serverCount;
557 } else {
558 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": session resumed");
559 }
560 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
561 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
562 failedStanzas.add(mStanzaQueue.valueAt(i));
563 }
564 mStanzaQueue.clear();
565 }
566 if (acknowledgedMessages) {
567 mXmppConnectionService.updateConversationUi();
568 }
569 Log.d(Config.LOGTAG, "resending " + failedStanzas.size() + " stanzas");
570 for (AbstractAcknowledgeableStanza packet : failedStanzas) {
571 if (packet instanceof MessagePacket) {
572 MessagePacket message = (MessagePacket) packet;
573 mXmppConnectionService.markMessage(account,
574 message.getTo().asBareJid(),
575 message.getId(),
576 Message.STATUS_UNSEND);
577 }
578 sendPacket(packet);
579 }
580 } catch (final NumberFormatException ignored) {
581 }
582 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
583 changeStatus(Account.State.ONLINE);
584 } else if (nextTag.isStart("r")) {
585 tagReader.readElement(nextTag);
586 if (Config.EXTENDED_SM_LOGGING) {
587 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
588 }
589 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
590 tagWriter.writeStanzaAsync(ack);
591 } else if (nextTag.isStart("a")) {
592 boolean accountUiNeedsRefresh = false;
593 synchronized (NotificationService.CATCHUP_LOCK) {
594 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
595 final int messageCount = mSmCatchupMessageCounter.get();
596 final int pendingIQs = packetCallbacks.size();
597 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": SM catchup complete (messages=" + messageCount + ", pending IQs=" + pendingIQs + ")");
598 accountUiNeedsRefresh = true;
599 if (messageCount > 0) {
600 mXmppConnectionService.getNotificationService().finishBacklog(true, account);
601 }
602 }
603 }
604 if (accountUiNeedsRefresh) {
605 mXmppConnectionService.updateAccountUi();
606 }
607 final Element ack = tagReader.readElement(nextTag);
608 lastPacketReceived = SystemClock.elapsedRealtime();
609 try {
610 final boolean acknowledgedMessages;
611 synchronized (this.mStanzaQueue) {
612 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
613 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence);
614 }
615 if (acknowledgedMessages) {
616 mXmppConnectionService.updateConversationUi();
617 }
618 } catch (NumberFormatException | NullPointerException e) {
619 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server send ack without sequence number");
620 }
621 } else if (nextTag.isStart("failed")) {
622 Element failed = tagReader.readElement(nextTag);
623 try {
624 final int serverCount = Integer.parseInt(failed.getAttribute("h"));
625 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed but server acknowledged stanza #" + serverCount);
626 final boolean acknowledgedMessages;
627 synchronized (this.mStanzaQueue) {
628 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
629 }
630 if (acknowledgedMessages) {
631 mXmppConnectionService.updateConversationUi();
632 }
633 } catch (NumberFormatException | NullPointerException e) {
634 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
635 }
636 resetStreamId();
637 sendBindRequest();
638 } else if (nextTag.isStart("iq")) {
639 processIq(nextTag);
640 } else if (nextTag.isStart("message")) {
641 processMessage(nextTag);
642 } else if (nextTag.isStart("presence")) {
643 processPresence(nextTag);
644 }
645 nextTag = tagReader.readTag();
646 }
647 if (nextTag != null && nextTag.isEnd("stream")) {
648 streamCountDownLatch.countDown();
649 }
650 }
651
652 private boolean acknowledgeStanzaUpTo(int serverCount) {
653 if (serverCount > stanzasSent) {
654 Log.e(Config.LOGTAG, "server acknowledged more stanzas than we sent. serverCount=" + serverCount + ", ourCount=" + stanzasSent);
655 }
656 boolean acknowledgedMessages = false;
657 for (int i = 0; i < mStanzaQueue.size(); ++i) {
658 if (serverCount >= mStanzaQueue.keyAt(i)) {
659 if (Config.EXTENDED_SM_LOGGING) {
660 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
661 }
662 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
663 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
664 final MessagePacket packet = (MessagePacket) stanza;
665 final String id = packet.getId();
666 final Jid to = packet.getTo();
667 if (id != null && to != null) {
668 acknowledgedMessages |= acknowledgedListener.onMessageAcknowledged(account, to, id);
669 }
670 }
671 mStanzaQueue.removeAt(i);
672 i--;
673 }
674 }
675 return acknowledgedMessages;
676 }
677
678 private @NonNull
679 Element processPacket(final Tag currentTag, final int packetType) throws IOException {
680 final Element element;
681 switch (packetType) {
682 case PACKET_IQ:
683 element = new IqPacket();
684 break;
685 case PACKET_MESSAGE:
686 element = new MessagePacket();
687 break;
688 case PACKET_PRESENCE:
689 element = new PresencePacket();
690 break;
691 default:
692 throw new AssertionError("Should never encounter invalid type");
693 }
694 element.setAttributes(currentTag.getAttributes());
695 Tag nextTag = tagReader.readTag();
696 if (nextTag == null) {
697 throw new IOException("interrupted mid tag");
698 }
699 while (!nextTag.isEnd(element.getName())) {
700 if (!nextTag.isNo()) {
701 element.addChild(tagReader.readElement(nextTag));
702 }
703 nextTag = tagReader.readTag();
704 if (nextTag == null) {
705 throw new IOException("interrupted mid tag");
706 }
707 }
708 if (stanzasReceived == Integer.MAX_VALUE) {
709 resetStreamId();
710 throw new IOException("time to restart the session. cant handle >2 billion pcks");
711 }
712 if (inSmacksSession) {
713 ++stanzasReceived;
714 } else if (features.sm()) {
715 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not counting stanza(" + element.getClass().getSimpleName() + "). Not in smacks session.");
716 }
717 lastPacketReceived = SystemClock.elapsedRealtime();
718 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
719 Log.d(Config.LOGTAG, "[background stanza] " + element);
720 }
721 if (element instanceof IqPacket
722 && (((IqPacket) element).getType() == IqPacket.TYPE.SET)
723 && element.hasChild("jingle", Namespace.JINGLE)) {
724 return JinglePacket.upgrade((IqPacket) element);
725 } else {
726 return element;
727 }
728 }
729
730 private void processIq(final Tag currentTag) throws IOException {
731 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
732 if (!packet.valid()) {
733 Log.e(Config.LOGTAG, "encountered invalid iq from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
734 return;
735 }
736 if (packet instanceof JinglePacket) {
737 if (this.jingleListener != null) {
738 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
739 }
740 } else {
741 OnIqPacketReceived callback = null;
742 synchronized (this.packetCallbacks) {
743 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
744 if (packetCallbackDuple != null) {
745 // Packets to the server should have responses from the server
746 if (packetCallbackDuple.first.toServer(account)) {
747 if (packet.fromServer(account)) {
748 callback = packetCallbackDuple.second;
749 packetCallbacks.remove(packet.getId());
750 } else {
751 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
752 }
753 } else {
754 if (packet.getFrom() != null && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
755 callback = packetCallbackDuple.second;
756 packetCallbacks.remove(packet.getId());
757 } else {
758 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
759 }
760 }
761 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
762 callback = this.unregisteredIqListener;
763 }
764 }
765 if (callback != null) {
766 try {
767 callback.onIqPacketReceived(account, packet);
768 } catch (StateChangingError error) {
769 throw new StateChangingException(error.state);
770 }
771 }
772 }
773 }
774
775 private void processMessage(final Tag currentTag) throws IOException {
776 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
777 if (!packet.valid()) {
778 Log.e(Config.LOGTAG, "encountered invalid message from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
779 return;
780 }
781 this.messageListener.onMessagePacketReceived(account, packet);
782 }
783
784 private void processPresence(final Tag currentTag) throws IOException {
785 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
786 if (!packet.valid()) {
787 Log.e(Config.LOGTAG, "encountered invalid presence from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
788 return;
789 }
790 this.presenceListener.onPresencePacketReceived(account, packet);
791 }
792
793 private void sendStartTLS() throws IOException {
794 final Tag startTLS = Tag.empty("starttls");
795 startTLS.setAttribute("xmlns", Namespace.TLS);
796 tagWriter.writeTag(startTLS);
797 }
798
799 private void switchOverToTls() throws XmlPullParserException, IOException {
800 tagReader.readTag();
801 final Socket socket = this.socket;
802 final SSLSocket sslSocket = upgradeSocketToTls(socket);
803 tagReader.setInputStream(sslSocket.getInputStream());
804 tagWriter.setOutputStream(sslSocket.getOutputStream());
805 sendStartStream();
806 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
807 features.encryptionEnabled = true;
808 final Tag tag = tagReader.readTag();
809 if (tag != null && tag.isStart("stream")) {
810 SSLSocketHelper.log(account, sslSocket);
811 processStream();
812 } else {
813 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
814 }
815 sslSocket.close();
816 }
817
818 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
819 final TlsFactoryVerifier tlsFactoryVerifier;
820 try {
821 tlsFactoryVerifier = getTlsFactoryVerifier();
822 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
823 throw new StateChangingException(Account.State.TLS_ERROR);
824 }
825 final InetAddress address = socket.getInetAddress();
826 final SSLSocket sslSocket = (SSLSocket) tlsFactoryVerifier.factory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
827 SSLSocketHelper.setSecurity(sslSocket);
828 SSLSocketHelper.setHostname(sslSocket, IDN.toASCII(account.getServer()));
829 SSLSocketHelper.setApplicationProtocol(sslSocket, "xmpp-client");
830 if (!tlsFactoryVerifier.verifier.verify(account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
831 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate verification failed");
832 FileBackend.close(sslSocket);
833 throw new StateChangingException(Account.State.TLS_ERROR);
834 }
835 return sslSocket;
836 }
837
838 private void processStreamFeatures(final Tag currentTag) throws IOException {
839 this.streamFeatures = tagReader.readElement(currentTag);
840 final boolean isSecure = features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
841 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
842 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
843 sendStartTLS();
844 } else if (this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
845 if (isSecure) {
846 register();
847 } else {
848 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find STARTTLS for registration process " + XmlHelper.printElementNames(this.streamFeatures));
849 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
850 }
851 } else if (!this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
852 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
853 } else if (this.streamFeatures.hasChild("mechanisms") && shouldAuthenticate && isSecure) {
854 authenticate();
855 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
856 if (Config.EXTENDED_SM_LOGGING) {
857 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resuming after stanza #" + stanzasReceived);
858 }
859 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
860 this.mSmCatchupMessageCounter.set(0);
861 this.mWaitingForSmCatchup.set(true);
862 this.tagWriter.writeStanzaAsync(resume);
863 } else if (needsBinding) {
864 if (this.streamFeatures.hasChild("bind") && isSecure) {
865 sendBindRequest();
866 } else {
867 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find bind feature " + XmlHelper.printElementNames(this.streamFeatures));
868 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
869 }
870 }
871 }
872
873 private void authenticate() throws IOException {
874 final List<String> mechanisms = extractMechanisms(streamFeatures.findChild("mechanisms"));
875 final Element auth = new Element("auth", Namespace.SASL);
876 if (mechanisms.contains(External.MECHANISM) && account.getPrivateKeyAlias() != null) {
877 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
878 } else if (mechanisms.contains(ScramSha512.MECHANISM)) {
879 saslMechanism = new ScramSha512(tagWriter, account, mXmppConnectionService.getRNG());
880 } else if (mechanisms.contains(ScramSha256.MECHANISM)) {
881 saslMechanism = new ScramSha256(tagWriter, account, mXmppConnectionService.getRNG());
882 } else if (mechanisms.contains(ScramSha1.MECHANISM)) {
883 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
884 } else if (mechanisms.contains(Plain.MECHANISM) && !account.getJid().getDomain().toEscapedString().equals("nimbuzz.com")) {
885 saslMechanism = new Plain(tagWriter, account);
886 } else if (mechanisms.contains(DigestMd5.MECHANISM)) {
887 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
888 } else if (mechanisms.contains(Anonymous.MECHANISM)) {
889 saslMechanism = new Anonymous(tagWriter, account, mXmppConnectionService.getRNG());
890 }
891 if (saslMechanism != null) {
892 final int pinnedMechanism = account.getKeyAsInt(Account.PINNED_MECHANISM_KEY, -1);
893 if (pinnedMechanism > saslMechanism.getPriority()) {
894 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
895 " has lower priority (" + saslMechanism.getPriority() +
896 ") than pinned priority (" + pinnedMechanism +
897 "). Possible downgrade attack?");
898 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
899 }
900 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
901 auth.setAttribute("mechanism", saslMechanism.getMechanism());
902 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
903 auth.setContent(saslMechanism.getClientFirstMessage());
904 }
905 tagWriter.writeElement(auth);
906 } else {
907 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find supported SASL mechanism in " + mechanisms);
908 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
909 }
910 }
911
912 private List<String> extractMechanisms(final Element stream) {
913 final ArrayList<String> mechanisms = new ArrayList<>(stream
914 .getChildren().size());
915 for (final Element child : stream.getChildren()) {
916 mechanisms.add(child.getContent());
917 }
918 return mechanisms;
919 }
920
921
922 private void register() {
923 final String preAuth = account.getKey(Account.PRE_AUTH_REGISTRATION_TOKEN);
924 if (preAuth != null && features.invite()) {
925 final IqPacket preAuthRequest = new IqPacket(IqPacket.TYPE.SET);
926 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
927 sendUnmodifiedIqPacket(preAuthRequest, (account, response) -> {
928 if (response.getType() == IqPacket.TYPE.RESULT) {
929 sendRegistryRequest();
930 } else {
931 final String error = response.getErrorCondition();
932 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": failed to pre auth. " + error);
933 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
934 }
935 }, true);
936 } else {
937 sendRegistryRequest();
938 }
939 }
940
941 private void sendRegistryRequest() {
942 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
943 register.query(Namespace.REGISTER);
944 register.setTo(account.getDomain());
945 sendUnmodifiedIqPacket(register, (account, packet) -> {
946 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
947 return;
948 }
949 if (packet.getType() == IqPacket.TYPE.ERROR) {
950 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
951 }
952 final Element query = packet.query(Namespace.REGISTER);
953 if (query.hasChild("username") && (query.hasChild("password"))) {
954 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
955 final Element username = new Element("username").setContent(account.getUsername());
956 final Element password = new Element("password").setContent(account.getPassword());
957 register1.query(Namespace.REGISTER).addChild(username);
958 register1.query().addChild(password);
959 register1.setFrom(account.getJid().asBareJid());
960 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
961 } else if (query.hasChild("x", Namespace.DATA)) {
962 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
963 final Element blob = query.findChild("data", "urn:xmpp:bob");
964 final String id = packet.getId();
965 InputStream is;
966 if (blob != null) {
967 try {
968 final String base64Blob = blob.getContent();
969 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
970 is = new ByteArrayInputStream(strBlob);
971 } catch (Exception e) {
972 is = null;
973 }
974 } else {
975 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
976 try {
977 final String url = data.getValue("url");
978 final String fallbackUrl = data.getValue("captcha-fallback-url");
979 if (url != null) {
980 is = HttpConnectionManager.open(url, useTor);
981 } else if (fallbackUrl != null) {
982 is = HttpConnectionManager.open(fallbackUrl, useTor);
983 } else {
984 is = null;
985 }
986 } catch (final IOException e) {
987 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to fetch captcha", e);
988 is = null;
989 }
990 }
991
992 if (is != null) {
993 Bitmap captcha = BitmapFactory.decodeStream(is);
994 try {
995 if (mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha)) {
996 return;
997 }
998 } catch (Exception e) {
999 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1000 }
1001 }
1002 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1003 } else if (query.hasChild("instructions") || query.hasChild("x", Namespace.OOB)) {
1004 final String instructions = query.findChildContent("instructions");
1005 final Element oob = query.findChild("x", Namespace.OOB);
1006 final String url = oob == null ? null : oob.findChildContent("url");
1007 if (url != null) {
1008 setAccountCreationFailed(url);
1009 } else if (instructions != null) {
1010 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
1011 if (matcher.find()) {
1012 setAccountCreationFailed(instructions.substring(matcher.start(), matcher.end()));
1013 }
1014 }
1015 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1016 }
1017 }, true);
1018 }
1019
1020 private void setAccountCreationFailed(final String url) {
1021 final HttpUrl httpUrl = url == null ? null : HttpUrl.parse(url);
1022 if (httpUrl != null && httpUrl.isHttps()) {
1023 this.redirectionUrl = httpUrl;
1024 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1025 }
1026 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1027 }
1028
1029 public HttpUrl getRedirectionUrl() {
1030 return this.redirectionUrl;
1031 }
1032
1033 public void resetEverything() {
1034 resetAttemptCount(true);
1035 resetStreamId();
1036 clearIqCallbacks();
1037 this.stanzasSent = 0;
1038 mStanzaQueue.clear();
1039 this.redirectionUrl = null;
1040 synchronized (this.disco) {
1041 disco.clear();
1042 }
1043 synchronized (this.commands) {
1044 this.commands.clear();
1045 }
1046 }
1047
1048 private void sendBindRequest() {
1049 try {
1050 mXmppConnectionService.restoredFromDatabaseLatch.await();
1051 } catch (InterruptedException e) {
1052 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while waiting for DB restore during bind");
1053 return;
1054 }
1055 clearIqCallbacks();
1056 if (account.getJid().isBareJid()) {
1057 account.setResource(this.createNewResource());
1058 } else {
1059 fixResource(mXmppConnectionService, account);
1060 }
1061 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1062 final String resource = Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1063 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1064 this.sendUnmodifiedIqPacket(iq, (account, packet) -> {
1065 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1066 return;
1067 }
1068 final Element bind = packet.findChild("bind");
1069 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1070 isBound = true;
1071 final Element jid = bind.findChild("jid");
1072 if (jid != null && jid.getContent() != null) {
1073 try {
1074 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1075 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1076 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server tried to re-assign domain to " + assignedJid.getDomain());
1077 throw new StateChangingError(Account.State.BIND_FAILURE);
1078 }
1079 if (account.setJid(assignedJid)) {
1080 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": jid changed during bind. updating database");
1081 mXmppConnectionService.databaseBackend.updateAccount(account);
1082 }
1083 if (streamFeatures.hasChild("session")
1084 && !streamFeatures.findChild("session").hasChild("optional")) {
1085 sendStartSession();
1086 } else {
1087 sendPostBindInitialization();
1088 }
1089 return;
1090 } catch (final IllegalArgumentException e) {
1091 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server reported invalid jid (" + jid.getContent() + ") on bind");
1092 }
1093 } else {
1094 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure. (no jid)");
1095 }
1096 } else {
1097 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet.toString());
1098 }
1099 final Element error = packet.findChild("error");
1100 if (packet.getType() == IqPacket.TYPE.ERROR && error != null && error.hasChild("conflict")) {
1101 account.setResource(createNewResource());
1102 }
1103 throw new StateChangingError(Account.State.BIND_FAILURE);
1104 }, true);
1105 }
1106
1107 private void clearIqCallbacks() {
1108 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1109 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1110 synchronized (this.packetCallbacks) {
1111 if (this.packetCallbacks.size() == 0) {
1112 return;
1113 }
1114 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": clearing " + this.packetCallbacks.size() + " iq callbacks");
1115 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
1116 while (iterator.hasNext()) {
1117 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1118 callbacks.add(entry.second);
1119 iterator.remove();
1120 }
1121 }
1122 for (OnIqPacketReceived callback : callbacks) {
1123 try {
1124 callback.onIqPacketReceived(account, failurePacket);
1125 } catch (StateChangingError error) {
1126 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": caught StateChangingError(" + error.state.toString() + ") while clearing callbacks");
1127 //ignore
1128 }
1129 }
1130 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
1131 }
1132
1133 public void sendDiscoTimeout() {
1134 if (mWaitForDisco.compareAndSet(true, false)) {
1135 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1136 finalizeBind();
1137 }
1138 }
1139
1140 private void sendStartSession() {
1141 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": sending legacy session to outdated server");
1142 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1143 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1144 this.sendUnmodifiedIqPacket(startSession, (account, packet) -> {
1145 if (packet.getType() == IqPacket.TYPE.RESULT) {
1146 sendPostBindInitialization();
1147 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1148 throw new StateChangingError(Account.State.SESSION_FAILURE);
1149 }
1150 }, true);
1151 }
1152
1153 private void sendPostBindInitialization() {
1154 smVersion = 0;
1155 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
1156 smVersion = 3;
1157 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
1158 smVersion = 2;
1159 }
1160 if (smVersion != 0) {
1161 synchronized (this.mStanzaQueue) {
1162 final EnablePacket enable = new EnablePacket(smVersion);
1163 tagWriter.writeStanzaAsync(enable);
1164 stanzasSent = 0;
1165 mStanzaQueue.clear();
1166 }
1167 }
1168 features.carbonsEnabled = false;
1169 features.blockListRequested = false;
1170 synchronized (this.disco) {
1171 this.disco.clear();
1172 }
1173 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1174 mPendingServiceDiscoveries.set(0);
1175 if (smVersion == 0 || Patches.DISCO_EXCEPTIONS.contains(account.getJid().getDomain().toEscapedString())) {
1176 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": do not wait for service discovery");
1177 mWaitForDisco.set(false);
1178 } else {
1179 mWaitForDisco.set(true);
1180 }
1181 lastDiscoStarted = SystemClock.elapsedRealtime();
1182 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1183 Element caps = streamFeatures.findChild("c");
1184 final String hash = caps == null ? null : caps.getAttribute("hash");
1185 final String ver = caps == null ? null : caps.getAttribute("ver");
1186 ServiceDiscoveryResult discoveryResult = null;
1187 if (hash != null && ver != null) {
1188 discoveryResult = mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1189 }
1190 final boolean requestDiscoItemsFirst = !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1191 if (requestDiscoItemsFirst) {
1192 sendServiceDiscoveryItems(account.getDomain());
1193 }
1194 if (discoveryResult == null) {
1195 sendServiceDiscoveryInfo(account.getDomain());
1196 } else {
1197 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1198 disco.put(account.getDomain(), discoveryResult);
1199 }
1200 discoverMamPreferences();
1201 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1202 if (!requestDiscoItemsFirst) {
1203 sendServiceDiscoveryItems(account.getDomain());
1204 }
1205
1206 if (!mWaitForDisco.get()) {
1207 finalizeBind();
1208 }
1209 this.lastSessionStarted = SystemClock.elapsedRealtime();
1210 }
1211
1212 private void sendServiceDiscoveryInfo(final Jid jid) {
1213 mPendingServiceDiscoveries.incrementAndGet();
1214 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1215 iq.setTo(jid);
1216 iq.query("http://jabber.org/protocol/disco#info");
1217 this.sendIqPacket(iq, (account, packet) -> {
1218 if (packet.getType() == IqPacket.TYPE.RESULT) {
1219 boolean advancedStreamFeaturesLoaded;
1220 synchronized (XmppConnection.this.disco) {
1221 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1222 if (jid.equals(account.getDomain())) {
1223 mXmppConnectionService.databaseBackend.insertDiscoveryResult(result);
1224 }
1225 disco.put(jid, result);
1226 advancedStreamFeaturesLoaded = disco.containsKey(account.getDomain())
1227 && disco.containsKey(account.getJid().asBareJid());
1228 }
1229 if (advancedStreamFeaturesLoaded && (jid.equals(account.getDomain()) || jid.equals(account.getJid().asBareJid()))) {
1230 enableAdvancedStreamFeatures();
1231 }
1232 } else if (packet.getType() == IqPacket.TYPE.ERROR) {
1233 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco info for " + jid.toString());
1234 final boolean serverOrAccount = jid.equals(account.getDomain()) || jid.equals(account.getJid().asBareJid());
1235 final boolean advancedStreamFeaturesLoaded;
1236 if (serverOrAccount) {
1237 synchronized (XmppConnection.this.disco) {
1238 disco.put(jid, ServiceDiscoveryResult.empty());
1239 advancedStreamFeaturesLoaded = disco.containsKey(account.getDomain()) && disco.containsKey(account.getJid().asBareJid());
1240 }
1241 } else {
1242 advancedStreamFeaturesLoaded = false;
1243 }
1244 if (advancedStreamFeaturesLoaded) {
1245 enableAdvancedStreamFeatures();
1246 }
1247 }
1248 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1249 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1250 && mWaitForDisco.compareAndSet(true, false)) {
1251 finalizeBind();
1252 }
1253 }
1254 });
1255 }
1256
1257 private void discoverMamPreferences() {
1258 IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1259 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1260 sendIqPacket(request, (account, response) -> {
1261 if (response.getType() == IqPacket.TYPE.RESULT) {
1262 Element prefs = response.findChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1263 isMamPreferenceAlways = "always".equals(prefs == null ? null : prefs.getAttribute("default"));
1264 }
1265 });
1266 }
1267
1268 private void discoverCommands() {
1269 final IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1270 request.setTo(account.getDomain());
1271 request.addChild("query", Namespace.DISCO_ITEMS).setAttribute("node", Namespace.COMMANDS);
1272 sendIqPacket(request, (account, response) -> {
1273 if (response.getType() == IqPacket.TYPE.RESULT) {
1274 final Element query = response.findChild("query", Namespace.DISCO_ITEMS);
1275 if (query == null) {
1276 return;
1277 }
1278 final HashMap<String, Jid> commands = new HashMap<>();
1279 for (final Element child : query.getChildren()) {
1280 if ("item".equals(child.getName())) {
1281 final String node = child.getAttribute("node");
1282 final Jid jid = child.getAttributeAsJid("jid");
1283 if (node != null && jid != null) {
1284 commands.put(node, jid);
1285 }
1286 }
1287 }
1288 Log.d(Config.LOGTAG, commands.toString());
1289 synchronized (this.commands) {
1290 this.commands.clear();
1291 this.commands.putAll(commands);
1292 }
1293 }
1294 });
1295 }
1296
1297 public boolean isMamPreferenceAlways() {
1298 return isMamPreferenceAlways;
1299 }
1300
1301 private void finalizeBind() {
1302 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
1303 if (bindListener != null) {
1304 bindListener.onBind(account);
1305 }
1306 changeStatus(Account.State.ONLINE);
1307 }
1308
1309 private void enableAdvancedStreamFeatures() {
1310 if (getFeatures().blocking() && !features.blockListRequested) {
1311 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
1312 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1313 }
1314 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1315 listener.onAdvancedStreamFeaturesAvailable(account);
1316 }
1317 if (getFeatures().carbons() && !features.carbonsEnabled) {
1318 sendEnableCarbons();
1319 }
1320 if (getFeatures().commands()) {
1321 discoverCommands();
1322 }
1323 }
1324
1325 private void sendServiceDiscoveryItems(final Jid server) {
1326 mPendingServiceDiscoveries.incrementAndGet();
1327 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1328 iq.setTo(server.getDomain());
1329 iq.query("http://jabber.org/protocol/disco#items");
1330 this.sendIqPacket(iq, (account, packet) -> {
1331 if (packet.getType() == IqPacket.TYPE.RESULT) {
1332 final HashSet<Jid> items = new HashSet<>();
1333 final List<Element> elements = packet.query().getChildren();
1334 for (final Element element : elements) {
1335 if (element.getName().equals("item")) {
1336 final Jid jid = InvalidJid.getNullForInvalid(element.getAttributeAsJid("jid"));
1337 if (jid != null && !jid.equals(account.getDomain())) {
1338 items.add(jid);
1339 }
1340 }
1341 }
1342 for (Jid jid : items) {
1343 sendServiceDiscoveryInfo(jid);
1344 }
1345 } else {
1346 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco items of " + server);
1347 }
1348 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1349 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1350 && mWaitForDisco.compareAndSet(true, false)) {
1351 finalizeBind();
1352 }
1353 }
1354 });
1355 }
1356
1357 private void sendEnableCarbons() {
1358 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1359 iq.addChild("enable", "urn:xmpp:carbons:2");
1360 this.sendIqPacket(iq, (account, packet) -> {
1361 if (!packet.hasChild("error")) {
1362 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1363 + ": successfully enabled carbons");
1364 features.carbonsEnabled = true;
1365 } else {
1366 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1367 + ": error enableing carbons " + packet.toString());
1368 }
1369 });
1370 }
1371
1372 private void processStreamError(final Tag currentTag) throws IOException {
1373 final Element streamError = tagReader.readElement(currentTag);
1374 if (streamError == null) {
1375 return;
1376 }
1377 if (streamError.hasChild("conflict")) {
1378 account.setResource(createNewResource());
1379 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": switching resource due to conflict (" + account.getResource() + ")");
1380 throw new IOException();
1381 } else if (streamError.hasChild("host-unknown")) {
1382 throw new StateChangingException(Account.State.HOST_UNKNOWN);
1383 } else if (streamError.hasChild("policy-violation")) {
1384 this.lastConnect = SystemClock.elapsedRealtime();
1385 final String text = streamError.findChildContent("text");
1386 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": policy violation. " + text);
1387 failPendingMessages(text);
1388 throw new StateChangingException(Account.State.POLICY_VIOLATION);
1389 } else {
1390 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError.toString());
1391 throw new StateChangingException(Account.State.STREAM_ERROR);
1392 }
1393 }
1394
1395 private void failPendingMessages(final String error) {
1396 synchronized (this.mStanzaQueue) {
1397 for (int i = 0; i < mStanzaQueue.size(); ++i) {
1398 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
1399 if (stanza instanceof MessagePacket) {
1400 final MessagePacket packet = (MessagePacket) stanza;
1401 final String id = packet.getId();
1402 final Jid to = packet.getTo();
1403 mXmppConnectionService.markMessage(account,
1404 to.asBareJid(),
1405 id,
1406 Message.STATUS_SEND_FAILED,
1407 error);
1408 }
1409 }
1410 }
1411 }
1412
1413 private void sendStartStream() throws IOException {
1414 final Tag stream = Tag.start("stream:stream");
1415 stream.setAttribute("to", account.getServer());
1416 stream.setAttribute("version", "1.0");
1417 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
1418 stream.setAttribute("xmlns", "jabber:client");
1419 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1420 tagWriter.writeTag(stream);
1421 }
1422
1423 private String createNewResource() {
1424 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
1425 }
1426
1427 private String nextRandomId() {
1428 return nextRandomId(false);
1429 }
1430
1431 private String nextRandomId(boolean s) {
1432 return CryptoHelper.random(s ? 3 : 9, mXmppConnectionService.getRNG());
1433 }
1434
1435 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1436 packet.setFrom(account.getJid());
1437 return this.sendUnmodifiedIqPacket(packet, callback, false);
1438 }
1439
1440 public synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
1441 if (packet.getId() == null) {
1442 packet.setAttribute("id", nextRandomId());
1443 }
1444 if (callback != null) {
1445 synchronized (this.packetCallbacks) {
1446 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1447 }
1448 }
1449 this.sendPacket(packet, force);
1450 return packet.getId();
1451 }
1452
1453 public void sendMessagePacket(final MessagePacket packet) {
1454 this.sendPacket(packet);
1455 }
1456
1457 public void sendPresencePacket(final PresencePacket packet) {
1458 this.sendPacket(packet);
1459 }
1460
1461 private synchronized void sendPacket(final AbstractStanza packet) {
1462 sendPacket(packet, false);
1463 }
1464
1465 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
1466 if (stanzasSent == Integer.MAX_VALUE) {
1467 resetStreamId();
1468 disconnect(true);
1469 return;
1470 }
1471 synchronized (this.mStanzaQueue) {
1472 if (force || isBound) {
1473 tagWriter.writeStanzaAsync(packet);
1474 } else {
1475 Log.d(Config.LOGTAG, account.getJid().asBareJid() + " do not write stanza to unbound stream " + packet.toString());
1476 }
1477 if (packet instanceof AbstractAcknowledgeableStanza) {
1478 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1479
1480 if (this.mStanzaQueue.size() != 0) {
1481 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
1482 if (currentHighestKey != stanzasSent) {
1483 throw new AssertionError("Stanza count messed up");
1484 }
1485 }
1486
1487 ++stanzasSent;
1488 this.mStanzaQueue.append(stanzasSent, stanza);
1489 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
1490 if (Config.EXTENDED_SM_LOGGING) {
1491 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1492 }
1493 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1494 }
1495 }
1496 }
1497 }
1498
1499 public void sendPing() {
1500 if (!r()) {
1501 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1502 iq.setFrom(account.getJid());
1503 iq.addChild("ping", Namespace.PING);
1504 this.sendIqPacket(iq, null);
1505 }
1506 this.lastPingSent = SystemClock.elapsedRealtime();
1507 }
1508
1509 public void setOnMessagePacketReceivedListener(
1510 final OnMessagePacketReceived listener) {
1511 this.messageListener = listener;
1512 }
1513
1514 public void setOnUnregisteredIqPacketReceivedListener(
1515 final OnIqPacketReceived listener) {
1516 this.unregisteredIqListener = listener;
1517 }
1518
1519 public void setOnPresencePacketReceivedListener(
1520 final OnPresencePacketReceived listener) {
1521 this.presenceListener = listener;
1522 }
1523
1524 public void setOnJinglePacketReceivedListener(
1525 final OnJinglePacketReceived listener) {
1526 this.jingleListener = listener;
1527 }
1528
1529 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1530 this.statusListener = listener;
1531 }
1532
1533 public void setOnBindListener(final OnBindListener listener) {
1534 this.bindListener = listener;
1535 }
1536
1537 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1538 this.acknowledgedListener = listener;
1539 }
1540
1541 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1542 this.advancedStreamFeaturesLoadedListeners.add(listener);
1543 }
1544
1545 private void forceCloseSocket() {
1546 FileBackend.close(this.socket);
1547 FileBackend.close(this.tagReader);
1548 }
1549
1550 public void interrupt() {
1551 if (this.mThread != null) {
1552 this.mThread.interrupt();
1553 }
1554 }
1555
1556 public void disconnect(final boolean force) {
1557 interrupt();
1558 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
1559 if (force) {
1560 forceCloseSocket();
1561 } else {
1562 final TagWriter currentTagWriter = this.tagWriter;
1563 if (currentTagWriter.isActive()) {
1564 currentTagWriter.finish();
1565 final Socket currentSocket = this.socket;
1566 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
1567 try {
1568 currentTagWriter.await(1, TimeUnit.SECONDS);
1569 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
1570 currentTagWriter.writeTag(Tag.end("stream:stream"));
1571 if (streamCountDownLatch != null) {
1572 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
1573 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote ended stream");
1574 } else {
1575 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote has not closed socket. force closing");
1576 }
1577 }
1578 } catch (InterruptedException e) {
1579 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while gracefully closing stream");
1580 } catch (final IOException e) {
1581 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": io exception during disconnect (" + e.getMessage() + ")");
1582 } finally {
1583 FileBackend.close(currentSocket);
1584 }
1585 } else {
1586 forceCloseSocket();
1587 }
1588 }
1589 }
1590
1591 private void resetStreamId() {
1592 this.streamId = null;
1593 }
1594
1595 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
1596 synchronized (this.disco) {
1597 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
1598 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
1599 if (cursor.getValue().getFeatures().contains(feature)) {
1600 items.add(cursor);
1601 }
1602 }
1603 return items;
1604 }
1605 }
1606
1607 public Jid findDiscoItemByFeature(final String feature) {
1608 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
1609 if (items.size() >= 1) {
1610 return items.get(0).getKey();
1611 }
1612 return null;
1613 }
1614
1615 public boolean r() {
1616 if (getFeatures().sm()) {
1617 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1618 return true;
1619 } else {
1620 return false;
1621 }
1622 }
1623
1624 public List<String> getMucServersWithholdAccount() {
1625 final List<String> servers = getMucServers();
1626 servers.remove(account.getDomain().toEscapedString());
1627 return servers;
1628 }
1629
1630 public List<String> getMucServers() {
1631 List<String> servers = new ArrayList<>();
1632 synchronized (this.disco) {
1633 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
1634 final ServiceDiscoveryResult value = cursor.getValue();
1635 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
1636 && value.hasIdentity("conference", "text")
1637 && !value.getFeatures().contains("jabber:iq:gateway")
1638 && !value.hasIdentity("conference", "irc")) {
1639 servers.add(cursor.getKey().toString());
1640 }
1641 }
1642 }
1643 return servers;
1644 }
1645
1646 public String getMucServer() {
1647 List<String> servers = getMucServers();
1648 return servers.size() > 0 ? servers.get(0) : null;
1649 }
1650
1651 public int getTimeToNextAttempt() {
1652 final int additionalTime = account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
1653 final int interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
1654 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1655 return interval - secondsSinceLast;
1656 }
1657
1658 public int getAttempt() {
1659 return this.attempt;
1660 }
1661
1662 public Features getFeatures() {
1663 return this.features;
1664 }
1665
1666 public long getLastSessionEstablished() {
1667 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1668 return System.currentTimeMillis() - diff;
1669 }
1670
1671 public long getLastConnect() {
1672 return this.lastConnect;
1673 }
1674
1675 public long getLastPingSent() {
1676 return this.lastPingSent;
1677 }
1678
1679 public long getLastDiscoStarted() {
1680 return this.lastDiscoStarted;
1681 }
1682
1683 public long getLastPacketReceived() {
1684 return this.lastPacketReceived;
1685 }
1686
1687 public void sendActive() {
1688 this.sendPacket(new ActivePacket());
1689 }
1690
1691 public void sendInactive() {
1692 this.sendPacket(new InactivePacket());
1693 }
1694
1695 public void resetAttemptCount(boolean resetConnectTime) {
1696 this.attempt = 0;
1697 if (resetConnectTime) {
1698 this.lastConnect = 0;
1699 }
1700 }
1701
1702 public void setInteractive(boolean interactive) {
1703 this.mInteractive = interactive;
1704 }
1705
1706 public Identity getServerIdentity() {
1707 synchronized (this.disco) {
1708 ServiceDiscoveryResult result = disco.get(account.getJid().getDomain());
1709 if (result == null) {
1710 return Identity.UNKNOWN;
1711 }
1712 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
1713 if (id.getType().equals("im") && id.getCategory().equals("server") && id.getName() != null) {
1714 switch (id.getName()) {
1715 case "Prosody":
1716 return Identity.PROSODY;
1717 case "ejabberd":
1718 return Identity.EJABBERD;
1719 case "Slack-XMPP":
1720 return Identity.SLACK;
1721 }
1722 }
1723 }
1724 }
1725 return Identity.UNKNOWN;
1726 }
1727
1728 private IqGenerator getIqGenerator() {
1729 return mXmppConnectionService.getIqGenerator();
1730 }
1731
1732 public enum Identity {
1733 FACEBOOK,
1734 SLACK,
1735 EJABBERD,
1736 PROSODY,
1737 NIMBUZZ,
1738 UNKNOWN
1739 }
1740
1741 private static class TlsFactoryVerifier {
1742 private final SSLSocketFactory factory;
1743 private final DomainHostnameVerifier verifier;
1744
1745 TlsFactoryVerifier(final SSLSocketFactory factory, final DomainHostnameVerifier verifier) throws IOException {
1746 this.factory = factory;
1747 this.verifier = verifier;
1748 if (factory == null || verifier == null) {
1749 throw new IOException("could not setup ssl");
1750 }
1751 }
1752 }
1753
1754 private class MyKeyManager implements X509KeyManager {
1755 @Override
1756 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
1757 return account.getPrivateKeyAlias();
1758 }
1759
1760 @Override
1761 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
1762 return null;
1763 }
1764
1765 @Override
1766 public X509Certificate[] getCertificateChain(String alias) {
1767 Log.d(Config.LOGTAG, "getting certificate chain");
1768 try {
1769 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
1770 } catch (Exception e) {
1771 Log.d(Config.LOGTAG, e.getMessage());
1772 return new X509Certificate[0];
1773 }
1774 }
1775
1776 @Override
1777 public String[] getClientAliases(String s, Principal[] principals) {
1778 final String alias = account.getPrivateKeyAlias();
1779 return alias != null ? new String[]{alias} : new String[0];
1780 }
1781
1782 @Override
1783 public String[] getServerAliases(String s, Principal[] principals) {
1784 return new String[0];
1785 }
1786
1787 @Override
1788 public PrivateKey getPrivateKey(String alias) {
1789 try {
1790 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
1791 } catch (Exception e) {
1792 return null;
1793 }
1794 }
1795 }
1796
1797 private static class StateChangingError extends Error {
1798 private final Account.State state;
1799
1800 public StateChangingError(Account.State state) {
1801 this.state = state;
1802 }
1803 }
1804
1805 private static class StateChangingException extends IOException {
1806 private final Account.State state;
1807
1808 public StateChangingException(Account.State state) {
1809 this.state = state;
1810 }
1811 }
1812
1813 public class Features {
1814 XmppConnection connection;
1815 private boolean carbonsEnabled = false;
1816 private boolean encryptionEnabled = false;
1817 private boolean blockListRequested = false;
1818
1819 public Features(final XmppConnection connection) {
1820 this.connection = connection;
1821 }
1822
1823 private boolean hasDiscoFeature(final Jid server, final String feature) {
1824 synchronized (XmppConnection.this.disco) {
1825 return connection.disco.containsKey(server) &&
1826 connection.disco.get(server).getFeatures().contains(feature);
1827 }
1828 }
1829
1830 public boolean carbons() {
1831 return hasDiscoFeature(account.getDomain(), "urn:xmpp:carbons:2");
1832 }
1833
1834 public boolean commands() {
1835 return hasDiscoFeature(account.getDomain(), Namespace.COMMANDS);
1836 }
1837
1838 public boolean easyOnboardingInvites() {
1839 synchronized (commands) {
1840 return commands.containsKey(Namespace.EASY_ONBOARDING_INVITE);
1841 }
1842 }
1843
1844 public boolean bookmarksConversion() {
1845 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION) && pepPublishOptions();
1846 }
1847
1848 public boolean avatarConversion() {
1849 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.AVATAR_CONVERSION) && pepPublishOptions();
1850 }
1851
1852 public boolean blocking() {
1853 return hasDiscoFeature(account.getDomain(), Namespace.BLOCKING);
1854 }
1855
1856 public boolean spamReporting() {
1857 return hasDiscoFeature(account.getDomain(), "urn:xmpp:reporting:reason:spam:0");
1858 }
1859
1860 public boolean flexibleOfflineMessageRetrieval() {
1861 return hasDiscoFeature(account.getDomain(), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
1862 }
1863
1864 public boolean register() {
1865 return hasDiscoFeature(account.getDomain(), Namespace.REGISTER);
1866 }
1867
1868 public boolean invite() {
1869 return connection.streamFeatures != null && connection.streamFeatures.hasChild("register", Namespace.INVITE);
1870 }
1871
1872 public boolean sm() {
1873 return streamId != null
1874 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1875 }
1876
1877 public boolean csi() {
1878 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1879 }
1880
1881 public boolean pep() {
1882 synchronized (XmppConnection.this.disco) {
1883 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1884 return info != null && info.hasIdentity("pubsub", "pep");
1885 }
1886 }
1887
1888 public boolean pepPersistent() {
1889 synchronized (XmppConnection.this.disco) {
1890 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1891 return info != null && info.getFeatures().contains("http://jabber.org/protocol/pubsub#persistent-items");
1892 }
1893 }
1894
1895 public boolean pepPublishOptions() {
1896 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
1897 }
1898
1899 public boolean pepOmemoWhitelisted() {
1900 return hasDiscoFeature(account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
1901 }
1902
1903 public boolean mam() {
1904 return MessageArchiveService.Version.has(getAccountFeatures());
1905 }
1906
1907 public List<String> getAccountFeatures() {
1908 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
1909 return result == null ? Collections.emptyList() : result.getFeatures();
1910 }
1911
1912 public boolean push() {
1913 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
1914 || hasDiscoFeature(account.getDomain(), Namespace.PUSH);
1915 }
1916
1917 public boolean rosterVersioning() {
1918 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1919 }
1920
1921 public void setBlockListRequested(boolean value) {
1922 this.blockListRequested = value;
1923 }
1924
1925 public boolean httpUpload(long filesize) {
1926 if (Config.DISABLE_HTTP_UPLOAD) {
1927 return false;
1928 } else {
1929 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1930 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1931 if (items.size() > 0) {
1932 try {
1933 long maxsize = Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1934 if (filesize <= maxsize) {
1935 return true;
1936 } else {
1937 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": http upload is not available for files with size " + filesize + " (max is " + maxsize + ")");
1938 return false;
1939 }
1940 } catch (Exception e) {
1941 return true;
1942 }
1943 }
1944 }
1945 return false;
1946 }
1947 }
1948
1949 public boolean useLegacyHttpUpload() {
1950 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
1951 }
1952
1953 public long getMaxHttpUploadSize() {
1954 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1955 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1956 if (items.size() > 0) {
1957 try {
1958 return Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1959 } catch (Exception e) {
1960 //ignored
1961 }
1962 }
1963 }
1964 return -1;
1965 }
1966
1967 public boolean stanzaIds() {
1968 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
1969 }
1970
1971 public boolean bookmarks2() {
1972 return Config.USE_BOOKMARKS2 /* || hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS2_COMPAT)*/;
1973 }
1974
1975 public boolean externalServiceDiscovery() {
1976 return hasDiscoFeature(account.getDomain(), Namespace.EXTERNAL_SERVICE_DISCOVERY);
1977 }
1978 }
1979}