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.MalformedURLException;
25import java.net.Socket;
26import java.net.URL;
27import java.net.UnknownHostException;
28import java.security.KeyManagementException;
29import java.security.NoSuchAlgorithmException;
30import java.security.Principal;
31import java.security.PrivateKey;
32import java.security.cert.X509Certificate;
33import java.util.ArrayList;
34import java.util.Arrays;
35import java.util.Collections;
36import java.util.HashMap;
37import java.util.HashSet;
38import java.util.Hashtable;
39import java.util.Iterator;
40import java.util.List;
41import java.util.Map.Entry;
42import java.util.Set;
43import java.util.concurrent.CountDownLatch;
44import java.util.concurrent.TimeUnit;
45import java.util.concurrent.atomic.AtomicBoolean;
46import java.util.concurrent.atomic.AtomicInteger;
47import java.util.regex.Matcher;
48
49import javax.net.ssl.KeyManager;
50import javax.net.ssl.SSLContext;
51import javax.net.ssl.SSLSocket;
52import javax.net.ssl.SSLSocketFactory;
53import javax.net.ssl.X509KeyManager;
54import javax.net.ssl.X509TrustManager;
55
56import eu.siacs.conversations.Config;
57import eu.siacs.conversations.R;
58import eu.siacs.conversations.crypto.DomainHostnameVerifier;
59import eu.siacs.conversations.crypto.XmppDomainVerifier;
60import eu.siacs.conversations.crypto.axolotl.AxolotlService;
61import eu.siacs.conversations.crypto.sasl.Anonymous;
62import eu.siacs.conversations.crypto.sasl.DigestMd5;
63import eu.siacs.conversations.crypto.sasl.External;
64import eu.siacs.conversations.crypto.sasl.Plain;
65import eu.siacs.conversations.crypto.sasl.SaslMechanism;
66import eu.siacs.conversations.crypto.sasl.ScramSha1;
67import eu.siacs.conversations.crypto.sasl.ScramSha256;
68import eu.siacs.conversations.crypto.sasl.ScramSha512;
69import eu.siacs.conversations.entities.Account;
70import eu.siacs.conversations.entities.Message;
71import eu.siacs.conversations.entities.ServiceDiscoveryResult;
72import eu.siacs.conversations.generator.IqGenerator;
73import eu.siacs.conversations.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.forms.Field;
92import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
93import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
94import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
95import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
96import eu.siacs.conversations.xmpp.stanzas.IqPacket;
97import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
98import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
99import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
100import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
101import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
102import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
103import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
104import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
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 URL 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 e) {
387 this.changeStatus(Account.State.SERVER_NOT_FOUND);
388 } catch (final SocksSocketFactory.HostNotFoundException e) {
389 this.changeStatus(Account.State.SERVER_NOT_FOUND);
390 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
391 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
392 } catch (final IOException | XmlPullParserException e) {
393 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
394 this.changeStatus(Account.State.OFFLINE);
395 this.attempt = Math.max(0, this.attempt - 1);
396 } finally {
397 if (!Thread.currentThread().isInterrupted()) {
398 forceCloseSocket();
399 } else {
400 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not force closing socket because thread was interrupted");
401 }
402 }
403 }
404
405 /**
406 * Starts xmpp protocol, call after connecting to socket
407 *
408 * @return true if server returns with valid xmpp, false otherwise
409 */
410 private boolean startXmpp(Socket socket) throws Exception {
411 if (Thread.currentThread().isInterrupted()) {
412 throw new InterruptedException();
413 }
414 this.socket = socket;
415 tagReader = new XmlReader();
416 if (tagWriter != null) {
417 tagWriter.forceClose();
418 }
419 tagWriter = new TagWriter();
420 tagWriter.setOutputStream(socket.getOutputStream());
421 tagReader.setInputStream(socket.getInputStream());
422 tagWriter.beginDocument();
423 sendStartStream();
424 final Tag tag = tagReader.readTag();
425 if (Thread.currentThread().isInterrupted()) {
426 throw new InterruptedException();
427 }
428 if (socket instanceof SSLSocket) {
429 SSLSocketHelper.log(account, (SSLSocket) socket);
430 }
431 return tag != null && tag.isStart("stream");
432 }
433
434 private TlsFactoryVerifier getTlsFactoryVerifier() throws NoSuchAlgorithmException, KeyManagementException, IOException {
435 final SSLContext sc = SSLSocketHelper.getSSLContext();
436 final MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
437 final KeyManager[] keyManager;
438 if (account.getPrivateKeyAlias() != null) {
439 keyManager = new KeyManager[]{new MyKeyManager()};
440 } else {
441 keyManager = null;
442 }
443 final String domain = account.getServer();
444 sc.init(keyManager, new X509TrustManager[]{mInteractive ? trustManager.getInteractive(domain) : trustManager.getNonInteractive(domain)}, mXmppConnectionService.getRNG());
445 final SSLSocketFactory factory = sc.getSocketFactory();
446 final DomainHostnameVerifier verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier(), mInteractive);
447 return new TlsFactoryVerifier(factory, verifier);
448 }
449
450 @Override
451 public void run() {
452 synchronized (this) {
453 this.mThread = Thread.currentThread();
454 if (this.mThread.isInterrupted()) {
455 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": aborting connect because thread was interrupted");
456 return;
457 }
458 forceCloseSocket();
459 }
460 connect();
461 }
462
463 private void processStream() throws XmlPullParserException, IOException {
464 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
465 this.mStreamCountDownLatch = streamCountDownLatch;
466 Tag nextTag = tagReader.readTag();
467 while (nextTag != null && !nextTag.isEnd("stream")) {
468 if (nextTag.isStart("error")) {
469 processStreamError(nextTag);
470 } else if (nextTag.isStart("features")) {
471 processStreamFeatures(nextTag);
472 } else if (nextTag.isStart("proceed")) {
473 switchOverToTls();
474 } else if (nextTag.isStart("success")) {
475 final String challenge = tagReader.readElement(nextTag).getContent();
476 try {
477 saslMechanism.getResponse(challenge);
478 } catch (final SaslMechanism.AuthenticationException e) {
479 Log.e(Config.LOGTAG, String.valueOf(e));
480 throw new StateChangingException(Account.State.UNAUTHORIZED);
481 }
482 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": logged in");
483 account.setKey(Account.PINNED_MECHANISM_KEY,
484 String.valueOf(saslMechanism.getPriority()));
485 tagReader.reset();
486 sendStartStream();
487 final Tag tag = tagReader.readTag();
488 if (tag != null && tag.isStart("stream")) {
489 processStream();
490 } else {
491 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
492 }
493 break;
494 } else if (nextTag.isStart("failure")) {
495 final Element failure = tagReader.readElement(nextTag);
496 if (Namespace.SASL.equals(failure.getNamespace())) {
497 final String text = failure.findChildContent("text");
498 if (failure.hasChild("account-disabled") && text != null) {
499 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
500 if (matcher.find()) {
501 try {
502 URL url = new URL(text.substring(matcher.start(), matcher.end()));
503 if (url.getProtocol().equals("https")) {
504 this.redirectionUrl = url;
505 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
506 }
507 } catch (MalformedURLException e) {
508 throw new StateChangingException(Account.State.UNAUTHORIZED);
509 }
510 }
511 }
512 throw new StateChangingException(Account.State.UNAUTHORIZED);
513 } else if (Namespace.TLS.equals(failure.getNamespace())) {
514 throw new StateChangingException(Account.State.TLS_ERROR);
515 } else {
516 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
517 }
518 } else if (nextTag.isStart("challenge")) {
519 final String challenge = tagReader.readElement(nextTag).getContent();
520 final Element response = new Element("response", Namespace.SASL);
521 try {
522 response.setContent(saslMechanism.getResponse(challenge));
523 } catch (final SaslMechanism.AuthenticationException e) {
524 // TODO: Send auth abort tag.
525 Log.e(Config.LOGTAG, e.toString());
526 }
527 tagWriter.writeElement(response);
528 } else if (nextTag.isStart("enabled")) {
529 final Element enabled = tagReader.readElement(nextTag);
530 if ("true".equals(enabled.getAttribute("resume"))) {
531 this.streamId = enabled.getAttribute("id");
532 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
533 + ": stream management(" + smVersion
534 + ") enabled (resumable)");
535 } else {
536 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
537 + ": stream management(" + smVersion + ") enabled");
538 }
539 this.stanzasReceived = 0;
540 this.inSmacksSession = true;
541 final RequestPacket r = new RequestPacket(smVersion);
542 tagWriter.writeStanzaAsync(r);
543 } else if (nextTag.isStart("resumed")) {
544 this.inSmacksSession = true;
545 this.isBound = true;
546 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
547 lastPacketReceived = SystemClock.elapsedRealtime();
548 final Element resumed = tagReader.readElement(nextTag);
549 final String h = resumed.getAttribute("h");
550 try {
551 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
552 final boolean acknowledgedMessages;
553 synchronized (this.mStanzaQueue) {
554 final int serverCount = Integer.parseInt(h);
555 if (serverCount < stanzasSent) {
556 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
557 + ": session resumed with lost packages");
558 stanzasSent = serverCount;
559 } else {
560 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": session resumed");
561 }
562 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
563 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
564 failedStanzas.add(mStanzaQueue.valueAt(i));
565 }
566 mStanzaQueue.clear();
567 }
568 if (acknowledgedMessages) {
569 mXmppConnectionService.updateConversationUi();
570 }
571 Log.d(Config.LOGTAG, "resending " + failedStanzas.size() + " stanzas");
572 for (AbstractAcknowledgeableStanza packet : failedStanzas) {
573 if (packet instanceof MessagePacket) {
574 MessagePacket message = (MessagePacket) packet;
575 mXmppConnectionService.markMessage(account,
576 message.getTo().asBareJid(),
577 message.getId(),
578 Message.STATUS_UNSEND);
579 }
580 sendPacket(packet);
581 }
582 } catch (final NumberFormatException ignored) {
583 }
584 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
585 changeStatus(Account.State.ONLINE);
586 } else if (nextTag.isStart("r")) {
587 tagReader.readElement(nextTag);
588 if (Config.EXTENDED_SM_LOGGING) {
589 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
590 }
591 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
592 tagWriter.writeStanzaAsync(ack);
593 } else if (nextTag.isStart("a")) {
594 boolean accountUiNeedsRefresh = false;
595 synchronized (NotificationService.CATCHUP_LOCK) {
596 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
597 final int messageCount = mSmCatchupMessageCounter.get();
598 final int pendingIQs = packetCallbacks.size();
599 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": SM catchup complete (messages=" + messageCount + ", pending IQs=" + pendingIQs + ")");
600 accountUiNeedsRefresh = true;
601 if (messageCount > 0) {
602 mXmppConnectionService.getNotificationService().finishBacklog(true, account);
603 }
604 }
605 }
606 if (accountUiNeedsRefresh) {
607 mXmppConnectionService.updateAccountUi();
608 }
609 final Element ack = tagReader.readElement(nextTag);
610 lastPacketReceived = SystemClock.elapsedRealtime();
611 try {
612 final boolean acknowledgedMessages;
613 synchronized (this.mStanzaQueue) {
614 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
615 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence);
616 }
617 if (acknowledgedMessages) {
618 mXmppConnectionService.updateConversationUi();
619 }
620 } catch (NumberFormatException | NullPointerException e) {
621 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server send ack without sequence number");
622 }
623 } else if (nextTag.isStart("failed")) {
624 Element failed = tagReader.readElement(nextTag);
625 try {
626 final int serverCount = Integer.parseInt(failed.getAttribute("h"));
627 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed but server acknowledged stanza #" + serverCount);
628 final boolean acknowledgedMessages;
629 synchronized (this.mStanzaQueue) {
630 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
631 }
632 if (acknowledgedMessages) {
633 mXmppConnectionService.updateConversationUi();
634 }
635 } catch (NumberFormatException | NullPointerException e) {
636 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
637 }
638 resetStreamId();
639 sendBindRequest();
640 } else if (nextTag.isStart("iq")) {
641 processIq(nextTag);
642 } else if (nextTag.isStart("message")) {
643 processMessage(nextTag);
644 } else if (nextTag.isStart("presence")) {
645 processPresence(nextTag);
646 }
647 nextTag = tagReader.readTag();
648 }
649 if (nextTag != null && nextTag.isEnd("stream")) {
650 streamCountDownLatch.countDown();
651 }
652 }
653
654 private boolean acknowledgeStanzaUpTo(int serverCount) {
655 if (serverCount > stanzasSent) {
656 Log.e(Config.LOGTAG, "server acknowledged more stanzas than we sent. serverCount=" + serverCount + ", ourCount=" + stanzasSent);
657 }
658 boolean acknowledgedMessages = false;
659 for (int i = 0; i < mStanzaQueue.size(); ++i) {
660 if (serverCount >= mStanzaQueue.keyAt(i)) {
661 if (Config.EXTENDED_SM_LOGGING) {
662 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
663 }
664 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
665 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
666 final MessagePacket packet = (MessagePacket) stanza;
667 final String id = packet.getId();
668 final Jid to = packet.getTo();
669 if (id != null && to != null) {
670 acknowledgedMessages |= acknowledgedListener.onMessageAcknowledged(account, to, id);
671 }
672 }
673 mStanzaQueue.removeAt(i);
674 i--;
675 }
676 }
677 return acknowledgedMessages;
678 }
679
680 private @NonNull
681 Element processPacket(final Tag currentTag, final int packetType) throws IOException {
682 final Element element;
683 switch (packetType) {
684 case PACKET_IQ:
685 element = new IqPacket();
686 break;
687 case PACKET_MESSAGE:
688 element = new MessagePacket();
689 break;
690 case PACKET_PRESENCE:
691 element = new PresencePacket();
692 break;
693 default:
694 throw new AssertionError("Should never encounter invalid type");
695 }
696 element.setAttributes(currentTag.getAttributes());
697 Tag nextTag = tagReader.readTag();
698 if (nextTag == null) {
699 throw new IOException("interrupted mid tag");
700 }
701 while (!nextTag.isEnd(element.getName())) {
702 if (!nextTag.isNo()) {
703 element.addChild(tagReader.readElement(nextTag));
704 }
705 nextTag = tagReader.readTag();
706 if (nextTag == null) {
707 throw new IOException("interrupted mid tag");
708 }
709 }
710 if (stanzasReceived == Integer.MAX_VALUE) {
711 resetStreamId();
712 throw new IOException("time to restart the session. cant handle >2 billion pcks");
713 }
714 if (inSmacksSession) {
715 ++stanzasReceived;
716 } else if (features.sm()) {
717 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not counting stanza(" + element.getClass().getSimpleName() + "). Not in smacks session.");
718 }
719 lastPacketReceived = SystemClock.elapsedRealtime();
720 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
721 Log.d(Config.LOGTAG, "[background stanza] " + element);
722 }
723 if (element instanceof IqPacket
724 && (((IqPacket) element).getType() == IqPacket.TYPE.SET)
725 && element.hasChild("jingle", Namespace.JINGLE)) {
726 return JinglePacket.upgrade((IqPacket) element);
727 } else {
728 return element;
729 }
730 }
731
732 private void processIq(final Tag currentTag) throws IOException {
733 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
734 if (!packet.valid()) {
735 Log.e(Config.LOGTAG, "encountered invalid iq from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
736 return;
737 }
738 if (packet instanceof JinglePacket) {
739 if (this.jingleListener != null) {
740 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
741 }
742 } else {
743 OnIqPacketReceived callback = null;
744 synchronized (this.packetCallbacks) {
745 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
746 if (packetCallbackDuple != null) {
747 // Packets to the server should have responses from the server
748 if (packetCallbackDuple.first.toServer(account)) {
749 if (packet.fromServer(account)) {
750 callback = packetCallbackDuple.second;
751 packetCallbacks.remove(packet.getId());
752 } else {
753 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
754 }
755 } else {
756 if (packet.getFrom() != null && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
757 callback = packetCallbackDuple.second;
758 packetCallbacks.remove(packet.getId());
759 } else {
760 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
761 }
762 }
763 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
764 callback = this.unregisteredIqListener;
765 }
766 }
767 if (callback != null) {
768 try {
769 callback.onIqPacketReceived(account, packet);
770 } catch (StateChangingError error) {
771 throw new StateChangingException(error.state);
772 }
773 }
774 }
775 }
776
777 private void processMessage(final Tag currentTag) throws IOException {
778 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
779 if (!packet.valid()) {
780 Log.e(Config.LOGTAG, "encountered invalid message from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
781 return;
782 }
783 this.messageListener.onMessagePacketReceived(account, packet);
784 }
785
786 private void processPresence(final Tag currentTag) throws IOException {
787 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
788 if (!packet.valid()) {
789 Log.e(Config.LOGTAG, "encountered invalid presence from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
790 return;
791 }
792 this.presenceListener.onPresencePacketReceived(account, packet);
793 }
794
795 private void sendStartTLS() throws IOException {
796 final Tag startTLS = Tag.empty("starttls");
797 startTLS.setAttribute("xmlns", Namespace.TLS);
798 tagWriter.writeTag(startTLS);
799 }
800
801 private void switchOverToTls() throws XmlPullParserException, IOException {
802 tagReader.readTag();
803 final Socket socket = this.socket;
804 final SSLSocket sslSocket = upgradeSocketToTls(socket);
805 tagReader.setInputStream(sslSocket.getInputStream());
806 tagWriter.setOutputStream(sslSocket.getOutputStream());
807 sendStartStream();
808 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
809 features.encryptionEnabled = true;
810 final Tag tag = tagReader.readTag();
811 if (tag != null && tag.isStart("stream")) {
812 SSLSocketHelper.log(account, sslSocket);
813 processStream();
814 } else {
815 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
816 }
817 sslSocket.close();
818 }
819
820 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
821 final TlsFactoryVerifier tlsFactoryVerifier;
822 try {
823 tlsFactoryVerifier = getTlsFactoryVerifier();
824 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
825 throw new StateChangingException(Account.State.TLS_ERROR);
826 }
827 final InetAddress address = socket.getInetAddress();
828 final SSLSocket sslSocket = (SSLSocket) tlsFactoryVerifier.factory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
829 SSLSocketHelper.setSecurity(sslSocket);
830 SSLSocketHelper.setHostname(sslSocket, IDN.toASCII(account.getServer()));
831 SSLSocketHelper.setApplicationProtocol(sslSocket, "xmpp-client");
832 if (!tlsFactoryVerifier.verifier.verify(account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
833 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate verification failed");
834 FileBackend.close(sslSocket);
835 throw new StateChangingException(Account.State.TLS_ERROR);
836 }
837 return sslSocket;
838 }
839
840 private void processStreamFeatures(final Tag currentTag) throws IOException {
841 this.streamFeatures = tagReader.readElement(currentTag);
842 final boolean isSecure = features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
843 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
844 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
845 sendStartTLS();
846 } else if (this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
847 if (isSecure) {
848 register();
849 } else {
850 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find STARTTLS for registration process " + XmlHelper.printElementNames(this.streamFeatures));
851 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
852 }
853 } else if (!this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
854 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
855 } else if (this.streamFeatures.hasChild("mechanisms") && shouldAuthenticate && isSecure) {
856 authenticate();
857 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
858 if (Config.EXTENDED_SM_LOGGING) {
859 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resuming after stanza #" + stanzasReceived);
860 }
861 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
862 this.mSmCatchupMessageCounter.set(0);
863 this.mWaitingForSmCatchup.set(true);
864 this.tagWriter.writeStanzaAsync(resume);
865 } else if (needsBinding) {
866 if (this.streamFeatures.hasChild("bind") && isSecure) {
867 sendBindRequest();
868 } else {
869 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find bind feature " + XmlHelper.printElementNames(this.streamFeatures));
870 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
871 }
872 }
873 }
874
875 private void authenticate() throws IOException {
876 final List<String> mechanisms = extractMechanisms(streamFeatures.findChild("mechanisms"));
877 final Element auth = new Element("auth", Namespace.SASL);
878 if (mechanisms.contains(External.MECHANISM) && account.getPrivateKeyAlias() != null) {
879 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
880 } else if (mechanisms.contains(ScramSha512.MECHANISM)) {
881 saslMechanism = new ScramSha512(tagWriter, account, mXmppConnectionService.getRNG());
882 } else if (mechanisms.contains(ScramSha256.MECHANISM)) {
883 saslMechanism = new ScramSha256(tagWriter, account, mXmppConnectionService.getRNG());
884 } else if (mechanisms.contains(ScramSha1.MECHANISM)) {
885 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
886 } else if (mechanisms.contains(Plain.MECHANISM) && !account.getJid().getDomain().toEscapedString().equals("nimbuzz.com")) {
887 saslMechanism = new Plain(tagWriter, account);
888 } else if (mechanisms.contains(DigestMd5.MECHANISM)) {
889 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
890 } else if (mechanisms.contains(Anonymous.MECHANISM)) {
891 saslMechanism = new Anonymous(tagWriter, account, mXmppConnectionService.getRNG());
892 }
893 if (saslMechanism != null) {
894 final int pinnedMechanism = account.getKeyAsInt(Account.PINNED_MECHANISM_KEY, -1);
895 if (pinnedMechanism > saslMechanism.getPriority()) {
896 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
897 " has lower priority (" + saslMechanism.getPriority() +
898 ") than pinned priority (" + pinnedMechanism +
899 "). Possible downgrade attack?");
900 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
901 }
902 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
903 auth.setAttribute("mechanism", saslMechanism.getMechanism());
904 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
905 auth.setContent(saslMechanism.getClientFirstMessage());
906 }
907 tagWriter.writeElement(auth);
908 } else {
909 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find supported SASL mechanism in " + mechanisms);
910 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
911 }
912 }
913
914 private List<String> extractMechanisms(final Element stream) {
915 final ArrayList<String> mechanisms = new ArrayList<>(stream
916 .getChildren().size());
917 for (final Element child : stream.getChildren()) {
918 mechanisms.add(child.getContent());
919 }
920 return mechanisms;
921 }
922
923
924 private void register() {
925 final String preAuth = account.getKey(Account.PRE_AUTH_REGISTRATION_TOKEN);
926 if (preAuth != null && features.invite()) {
927 final IqPacket preAuthRequest = new IqPacket(IqPacket.TYPE.SET);
928 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
929 sendUnmodifiedIqPacket(preAuthRequest, (account, response) -> {
930 if (response.getType() == IqPacket.TYPE.RESULT) {
931 sendRegistryRequest();
932 } else {
933 final String error = response.getErrorCondition();
934 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": failed to pre auth. " + error);
935 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
936 }
937 }, true);
938 } else {
939 sendRegistryRequest();
940 }
941 }
942
943 private void sendRegistryRequest() {
944 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
945 register.query(Namespace.REGISTER);
946 register.setTo(account.getDomain());
947 sendUnmodifiedIqPacket(register, (account, packet) -> {
948 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
949 return;
950 }
951 if (packet.getType() == IqPacket.TYPE.ERROR) {
952 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
953 }
954 final Element query = packet.query(Namespace.REGISTER);
955 if (query.hasChild("username") && (query.hasChild("password"))) {
956 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
957 final Element username = new Element("username").setContent(account.getUsername());
958 final Element password = new Element("password").setContent(account.getPassword());
959 register1.query(Namespace.REGISTER).addChild(username);
960 register1.query().addChild(password);
961 register1.setFrom(account.getJid().asBareJid());
962 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
963 } else if (query.hasChild("x", Namespace.DATA)) {
964 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
965 final Element blob = query.findChild("data", "urn:xmpp:bob");
966 final String id = packet.getId();
967 InputStream is;
968 if (blob != null) {
969 try {
970 final String base64Blob = blob.getContent();
971 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
972 is = new ByteArrayInputStream(strBlob);
973 } catch (Exception e) {
974 is = null;
975 }
976 } else {
977 try {
978 Field field = data.getFieldByName("url");
979 URL url = field != null && field.getValue() != null ? new URL(field.getValue()) : null;
980 is = url != null ? url.openStream() : null;
981 } catch (IOException e) {
982 is = null;
983 }
984 }
985
986 if (is != null) {
987 Bitmap captcha = BitmapFactory.decodeStream(is);
988 try {
989 if (mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha)) {
990 return;
991 }
992 } catch (Exception e) {
993 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
994 }
995 }
996 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
997 } else if (query.hasChild("instructions") || query.hasChild("x", Namespace.OOB)) {
998 final String instructions = query.findChildContent("instructions");
999 final Element oob = query.findChild("x", Namespace.OOB);
1000 final String url = oob == null ? null : oob.findChildContent("url");
1001 if (url != null) {
1002 setAccountCreationFailed(url);
1003 } else if (instructions != null) {
1004 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
1005 if (matcher.find()) {
1006 setAccountCreationFailed(instructions.substring(matcher.start(), matcher.end()));
1007 }
1008 }
1009 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1010 }
1011 }, true);
1012 }
1013
1014 private void setAccountCreationFailed(String url) {
1015 if (url != null) {
1016 try {
1017 this.redirectionUrl = new URL(url);
1018 if (this.redirectionUrl.getProtocol().equals("https")) {
1019 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1020 }
1021 } catch (MalformedURLException e) {
1022 //fall through
1023 }
1024 }
1025 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1026 }
1027
1028 public URL getRedirectionUrl() {
1029 return this.redirectionUrl;
1030 }
1031
1032 public void resetEverything() {
1033 resetAttemptCount(true);
1034 resetStreamId();
1035 clearIqCallbacks();
1036 this.stanzasSent = 0;
1037 mStanzaQueue.clear();
1038 this.redirectionUrl = null;
1039 synchronized (this.disco) {
1040 disco.clear();
1041 }
1042 synchronized (this.commands) {
1043 this.commands.clear();
1044 }
1045 }
1046
1047 private void sendBindRequest() {
1048 try {
1049 mXmppConnectionService.restoredFromDatabaseLatch.await();
1050 } catch (InterruptedException e) {
1051 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while waiting for DB restore during bind");
1052 return;
1053 }
1054 clearIqCallbacks();
1055 if (account.getJid().isBareJid()) {
1056 account.setResource(this.createNewResource());
1057 } else {
1058 fixResource(mXmppConnectionService, account);
1059 }
1060 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1061 final String resource = Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1062 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1063 this.sendUnmodifiedIqPacket(iq, (account, packet) -> {
1064 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1065 return;
1066 }
1067 final Element bind = packet.findChild("bind");
1068 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1069 isBound = true;
1070 final Element jid = bind.findChild("jid");
1071 if (jid != null && jid.getContent() != null) {
1072 try {
1073 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1074 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1075 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server tried to re-assign domain to " + assignedJid.getDomain());
1076 throw new StateChangingError(Account.State.BIND_FAILURE);
1077 }
1078 if (account.setJid(assignedJid)) {
1079 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": jid changed during bind. updating database");
1080 mXmppConnectionService.databaseBackend.updateAccount(account);
1081 }
1082 if (streamFeatures.hasChild("session")
1083 && !streamFeatures.findChild("session").hasChild("optional")) {
1084 sendStartSession();
1085 } else {
1086 sendPostBindInitialization();
1087 }
1088 return;
1089 } catch (final IllegalArgumentException e) {
1090 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server reported invalid jid (" + jid.getContent() + ") on bind");
1091 }
1092 } else {
1093 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure. (no jid)");
1094 }
1095 } else {
1096 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet.toString());
1097 }
1098 final Element error = packet.findChild("error");
1099 if (packet.getType() == IqPacket.TYPE.ERROR && error != null && error.hasChild("conflict")) {
1100 account.setResource(createNewResource());
1101 }
1102 throw new StateChangingError(Account.State.BIND_FAILURE);
1103 }, true);
1104 }
1105
1106 private void clearIqCallbacks() {
1107 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1108 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1109 synchronized (this.packetCallbacks) {
1110 if (this.packetCallbacks.size() == 0) {
1111 return;
1112 }
1113 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": clearing " + this.packetCallbacks.size() + " iq callbacks");
1114 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
1115 while (iterator.hasNext()) {
1116 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1117 callbacks.add(entry.second);
1118 iterator.remove();
1119 }
1120 }
1121 for (OnIqPacketReceived callback : callbacks) {
1122 try {
1123 callback.onIqPacketReceived(account, failurePacket);
1124 } catch (StateChangingError error) {
1125 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": caught StateChangingError(" + error.state.toString() + ") while clearing callbacks");
1126 //ignore
1127 }
1128 }
1129 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
1130 }
1131
1132 public void sendDiscoTimeout() {
1133 if (mWaitForDisco.compareAndSet(true, false)) {
1134 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1135 finalizeBind();
1136 }
1137 }
1138
1139 private void sendStartSession() {
1140 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": sending legacy session to outdated server");
1141 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1142 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1143 this.sendUnmodifiedIqPacket(startSession, (account, packet) -> {
1144 if (packet.getType() == IqPacket.TYPE.RESULT) {
1145 sendPostBindInitialization();
1146 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1147 throw new StateChangingError(Account.State.SESSION_FAILURE);
1148 }
1149 }, true);
1150 }
1151
1152 private void sendPostBindInitialization() {
1153 smVersion = 0;
1154 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
1155 smVersion = 3;
1156 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
1157 smVersion = 2;
1158 }
1159 if (smVersion != 0) {
1160 synchronized (this.mStanzaQueue) {
1161 final EnablePacket enable = new EnablePacket(smVersion);
1162 tagWriter.writeStanzaAsync(enable);
1163 stanzasSent = 0;
1164 mStanzaQueue.clear();
1165 }
1166 }
1167 features.carbonsEnabled = false;
1168 features.blockListRequested = false;
1169 synchronized (this.disco) {
1170 this.disco.clear();
1171 }
1172 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1173 mPendingServiceDiscoveries.set(0);
1174 if (smVersion == 0 || Patches.DISCO_EXCEPTIONS.contains(account.getJid().getDomain().toEscapedString())) {
1175 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": do not wait for service discovery");
1176 mWaitForDisco.set(false);
1177 } else {
1178 mWaitForDisco.set(true);
1179 }
1180 lastDiscoStarted = SystemClock.elapsedRealtime();
1181 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1182 Element caps = streamFeatures.findChild("c");
1183 final String hash = caps == null ? null : caps.getAttribute("hash");
1184 final String ver = caps == null ? null : caps.getAttribute("ver");
1185 ServiceDiscoveryResult discoveryResult = null;
1186 if (hash != null && ver != null) {
1187 discoveryResult = mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1188 }
1189 final boolean requestDiscoItemsFirst = !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1190 if (requestDiscoItemsFirst) {
1191 sendServiceDiscoveryItems(account.getDomain());
1192 }
1193 if (discoveryResult == null) {
1194 sendServiceDiscoveryInfo(account.getDomain());
1195 } else {
1196 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1197 disco.put(account.getDomain(), discoveryResult);
1198 }
1199 discoverMamPreferences();
1200 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1201 if (!requestDiscoItemsFirst) {
1202 sendServiceDiscoveryItems(account.getDomain());
1203 }
1204
1205 if (!mWaitForDisco.get()) {
1206 finalizeBind();
1207 }
1208 this.lastSessionStarted = SystemClock.elapsedRealtime();
1209 }
1210
1211 private void sendServiceDiscoveryInfo(final Jid jid) {
1212 mPendingServiceDiscoveries.incrementAndGet();
1213 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1214 iq.setTo(jid);
1215 iq.query("http://jabber.org/protocol/disco#info");
1216 this.sendIqPacket(iq, (account, packet) -> {
1217 if (packet.getType() == IqPacket.TYPE.RESULT) {
1218 boolean advancedStreamFeaturesLoaded;
1219 synchronized (XmppConnection.this.disco) {
1220 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1221 if (jid.equals(account.getDomain())) {
1222 mXmppConnectionService.databaseBackend.insertDiscoveryResult(result);
1223 }
1224 disco.put(jid, result);
1225 advancedStreamFeaturesLoaded = disco.containsKey(account.getDomain())
1226 && disco.containsKey(account.getJid().asBareJid());
1227 }
1228 if (advancedStreamFeaturesLoaded && (jid.equals(account.getDomain()) || jid.equals(account.getJid().asBareJid()))) {
1229 enableAdvancedStreamFeatures();
1230 }
1231 } else if (packet.getType() == IqPacket.TYPE.ERROR) {
1232 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco info for " + jid.toString());
1233 final boolean serverOrAccount = jid.equals(account.getDomain()) || jid.equals(account.getJid().asBareJid());
1234 final boolean advancedStreamFeaturesLoaded;
1235 if (serverOrAccount) {
1236 synchronized (XmppConnection.this.disco) {
1237 disco.put(jid, ServiceDiscoveryResult.empty());
1238 advancedStreamFeaturesLoaded = disco.containsKey(account.getDomain()) && disco.containsKey(account.getJid().asBareJid());
1239 }
1240 } else {
1241 advancedStreamFeaturesLoaded = false;
1242 }
1243 if (advancedStreamFeaturesLoaded) {
1244 enableAdvancedStreamFeatures();
1245 }
1246 }
1247 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1248 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1249 && mWaitForDisco.compareAndSet(true, false)) {
1250 finalizeBind();
1251 }
1252 }
1253 });
1254 }
1255
1256 private void discoverMamPreferences() {
1257 IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1258 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1259 sendIqPacket(request, (account, response) -> {
1260 if (response.getType() == IqPacket.TYPE.RESULT) {
1261 Element prefs = response.findChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1262 isMamPreferenceAlways = "always".equals(prefs == null ? null : prefs.getAttribute("default"));
1263 }
1264 });
1265 }
1266
1267 private void discoverCommands() {
1268 final IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1269 request.setTo(account.getDomain());
1270 request.addChild("query", Namespace.DISCO_ITEMS).setAttribute("node", Namespace.COMMANDS);
1271 sendIqPacket(request, (account, response) -> {
1272 if (response.getType() == IqPacket.TYPE.RESULT) {
1273 final Element query = response.findChild("query", Namespace.DISCO_ITEMS);
1274 if (query == null) {
1275 return;
1276 }
1277 final HashMap<String, Jid> commands = new HashMap<>();
1278 for (final Element child : query.getChildren()) {
1279 if ("item".equals(child.getName())) {
1280 final String node = child.getAttribute("node");
1281 final Jid jid = child.getAttributeAsJid("jid");
1282 if (node != null && jid != null) {
1283 commands.put(node, jid);
1284 }
1285 }
1286 }
1287 Log.d(Config.LOGTAG, commands.toString());
1288 synchronized (this.commands) {
1289 this.commands.clear();
1290 this.commands.putAll(commands);
1291 }
1292 }
1293 });
1294 }
1295
1296 public boolean isMamPreferenceAlways() {
1297 return isMamPreferenceAlways;
1298 }
1299
1300 private void finalizeBind() {
1301 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
1302 if (bindListener != null) {
1303 bindListener.onBind(account);
1304 }
1305 changeStatus(Account.State.ONLINE);
1306 }
1307
1308 private void enableAdvancedStreamFeatures() {
1309 if (getFeatures().blocking() && !features.blockListRequested) {
1310 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
1311 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1312 }
1313 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1314 listener.onAdvancedStreamFeaturesAvailable(account);
1315 }
1316 if (getFeatures().carbons() && !features.carbonsEnabled) {
1317 sendEnableCarbons();
1318 }
1319 if (getFeatures().commands()) {
1320 discoverCommands();
1321 }
1322 }
1323
1324 private void sendServiceDiscoveryItems(final Jid server) {
1325 mPendingServiceDiscoveries.incrementAndGet();
1326 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1327 iq.setTo(server.getDomain());
1328 iq.query("http://jabber.org/protocol/disco#items");
1329 this.sendIqPacket(iq, (account, packet) -> {
1330 if (packet.getType() == IqPacket.TYPE.RESULT) {
1331 final HashSet<Jid> items = new HashSet<>();
1332 final List<Element> elements = packet.query().getChildren();
1333 for (final Element element : elements) {
1334 if (element.getName().equals("item")) {
1335 final Jid jid = InvalidJid.getNullForInvalid(element.getAttributeAsJid("jid"));
1336 if (jid != null && !jid.equals(account.getDomain())) {
1337 items.add(jid);
1338 }
1339 }
1340 }
1341 for (Jid jid : items) {
1342 sendServiceDiscoveryInfo(jid);
1343 }
1344 } else {
1345 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco items of " + server);
1346 }
1347 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1348 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1349 && mWaitForDisco.compareAndSet(true, false)) {
1350 finalizeBind();
1351 }
1352 }
1353 });
1354 }
1355
1356 private void sendEnableCarbons() {
1357 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1358 iq.addChild("enable", "urn:xmpp:carbons:2");
1359 this.sendIqPacket(iq, (account, packet) -> {
1360 if (!packet.hasChild("error")) {
1361 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1362 + ": successfully enabled carbons");
1363 features.carbonsEnabled = true;
1364 } else {
1365 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1366 + ": error enableing carbons " + packet.toString());
1367 }
1368 });
1369 }
1370
1371 private void processStreamError(final Tag currentTag) throws IOException {
1372 final Element streamError = tagReader.readElement(currentTag);
1373 if (streamError == null) {
1374 return;
1375 }
1376 if (streamError.hasChild("conflict")) {
1377 account.setResource(createNewResource());
1378 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": switching resource due to conflict (" + account.getResource() + ")");
1379 throw new IOException();
1380 } else if (streamError.hasChild("host-unknown")) {
1381 throw new StateChangingException(Account.State.HOST_UNKNOWN);
1382 } else if (streamError.hasChild("policy-violation")) {
1383 this.lastConnect = SystemClock.elapsedRealtime();
1384 final String text = streamError.findChildContent("text");
1385 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": policy violation. " + text);
1386 failPendingMessages(text);
1387 throw new StateChangingException(Account.State.POLICY_VIOLATION);
1388 } else {
1389 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError.toString());
1390 throw new StateChangingException(Account.State.STREAM_ERROR);
1391 }
1392 }
1393
1394 private void failPendingMessages(final String error) {
1395 synchronized (this.mStanzaQueue) {
1396 for (int i = 0; i < mStanzaQueue.size(); ++i) {
1397 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
1398 if (stanza instanceof MessagePacket) {
1399 final MessagePacket packet = (MessagePacket) stanza;
1400 final String id = packet.getId();
1401 final Jid to = packet.getTo();
1402 mXmppConnectionService.markMessage(account,
1403 to.asBareJid(),
1404 id,
1405 Message.STATUS_SEND_FAILED,
1406 error);
1407 }
1408 }
1409 }
1410 }
1411
1412 private void sendStartStream() throws IOException {
1413 final Tag stream = Tag.start("stream:stream");
1414 stream.setAttribute("to", account.getServer());
1415 stream.setAttribute("version", "1.0");
1416 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
1417 stream.setAttribute("xmlns", "jabber:client");
1418 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1419 tagWriter.writeTag(stream);
1420 }
1421
1422 private String createNewResource() {
1423 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
1424 }
1425
1426 private String nextRandomId() {
1427 return nextRandomId(false);
1428 }
1429
1430 private String nextRandomId(boolean s) {
1431 return CryptoHelper.random(s ? 3 : 9, mXmppConnectionService.getRNG());
1432 }
1433
1434 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1435 packet.setFrom(account.getJid());
1436 return this.sendUnmodifiedIqPacket(packet, callback, false);
1437 }
1438
1439 public synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
1440 if (packet.getId() == null) {
1441 packet.setAttribute("id", nextRandomId());
1442 }
1443 if (callback != null) {
1444 synchronized (this.packetCallbacks) {
1445 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1446 }
1447 }
1448 this.sendPacket(packet, force);
1449 return packet.getId();
1450 }
1451
1452 public void sendMessagePacket(final MessagePacket packet) {
1453 this.sendPacket(packet);
1454 }
1455
1456 public void sendPresencePacket(final PresencePacket packet) {
1457 this.sendPacket(packet);
1458 }
1459
1460 private synchronized void sendPacket(final AbstractStanza packet) {
1461 sendPacket(packet, false);
1462 }
1463
1464 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
1465 if (stanzasSent == Integer.MAX_VALUE) {
1466 resetStreamId();
1467 disconnect(true);
1468 return;
1469 }
1470 synchronized (this.mStanzaQueue) {
1471 if (force || isBound) {
1472 tagWriter.writeStanzaAsync(packet);
1473 } else {
1474 Log.d(Config.LOGTAG, account.getJid().asBareJid() + " do not write stanza to unbound stream " + packet.toString());
1475 }
1476 if (packet instanceof AbstractAcknowledgeableStanza) {
1477 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1478
1479 if (this.mStanzaQueue.size() != 0) {
1480 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
1481 if (currentHighestKey != stanzasSent) {
1482 throw new AssertionError("Stanza count messed up");
1483 }
1484 }
1485
1486 ++stanzasSent;
1487 this.mStanzaQueue.append(stanzasSent, stanza);
1488 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
1489 if (Config.EXTENDED_SM_LOGGING) {
1490 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1491 }
1492 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1493 }
1494 }
1495 }
1496 }
1497
1498 public void sendPing() {
1499 if (!r()) {
1500 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1501 iq.setFrom(account.getJid());
1502 iq.addChild("ping", Namespace.PING);
1503 this.sendIqPacket(iq, null);
1504 }
1505 this.lastPingSent = SystemClock.elapsedRealtime();
1506 }
1507
1508 public void setOnMessagePacketReceivedListener(
1509 final OnMessagePacketReceived listener) {
1510 this.messageListener = listener;
1511 }
1512
1513 public void setOnUnregisteredIqPacketReceivedListener(
1514 final OnIqPacketReceived listener) {
1515 this.unregisteredIqListener = listener;
1516 }
1517
1518 public void setOnPresencePacketReceivedListener(
1519 final OnPresencePacketReceived listener) {
1520 this.presenceListener = listener;
1521 }
1522
1523 public void setOnJinglePacketReceivedListener(
1524 final OnJinglePacketReceived listener) {
1525 this.jingleListener = listener;
1526 }
1527
1528 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1529 this.statusListener = listener;
1530 }
1531
1532 public void setOnBindListener(final OnBindListener listener) {
1533 this.bindListener = listener;
1534 }
1535
1536 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1537 this.acknowledgedListener = listener;
1538 }
1539
1540 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1541 this.advancedStreamFeaturesLoadedListeners.add(listener);
1542 }
1543
1544 private void forceCloseSocket() {
1545 FileBackend.close(this.socket);
1546 FileBackend.close(this.tagReader);
1547 }
1548
1549 public void interrupt() {
1550 if (this.mThread != null) {
1551 this.mThread.interrupt();
1552 }
1553 }
1554
1555 public void disconnect(final boolean force) {
1556 interrupt();
1557 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
1558 if (force) {
1559 forceCloseSocket();
1560 } else {
1561 final TagWriter currentTagWriter = this.tagWriter;
1562 if (currentTagWriter.isActive()) {
1563 currentTagWriter.finish();
1564 final Socket currentSocket = this.socket;
1565 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
1566 try {
1567 currentTagWriter.await(1, TimeUnit.SECONDS);
1568 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
1569 currentTagWriter.writeTag(Tag.end("stream:stream"));
1570 if (streamCountDownLatch != null) {
1571 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
1572 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote ended stream");
1573 } else {
1574 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote has not closed socket. force closing");
1575 }
1576 }
1577 } catch (InterruptedException e) {
1578 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while gracefully closing stream");
1579 } catch (final IOException e) {
1580 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": io exception during disconnect (" + e.getMessage() + ")");
1581 } finally {
1582 FileBackend.close(currentSocket);
1583 }
1584 } else {
1585 forceCloseSocket();
1586 }
1587 }
1588 }
1589
1590 private void resetStreamId() {
1591 this.streamId = null;
1592 }
1593
1594 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
1595 synchronized (this.disco) {
1596 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
1597 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
1598 if (cursor.getValue().getFeatures().contains(feature)) {
1599 items.add(cursor);
1600 }
1601 }
1602 return items;
1603 }
1604 }
1605
1606 public Jid findDiscoItemByFeature(final String feature) {
1607 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
1608 if (items.size() >= 1) {
1609 return items.get(0).getKey();
1610 }
1611 return null;
1612 }
1613
1614 public boolean r() {
1615 if (getFeatures().sm()) {
1616 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1617 return true;
1618 } else {
1619 return false;
1620 }
1621 }
1622
1623 public List<String> getMucServersWithholdAccount() {
1624 final List<String> servers = getMucServers();
1625 servers.remove(account.getDomain().toEscapedString());
1626 return servers;
1627 }
1628
1629 public List<String> getMucServers() {
1630 List<String> servers = new ArrayList<>();
1631 synchronized (this.disco) {
1632 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
1633 final ServiceDiscoveryResult value = cursor.getValue();
1634 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
1635 && value.hasIdentity("conference", "text")
1636 && !value.getFeatures().contains("jabber:iq:gateway")
1637 && !value.hasIdentity("conference", "irc")) {
1638 servers.add(cursor.getKey().toString());
1639 }
1640 }
1641 }
1642 return servers;
1643 }
1644
1645 public String getMucServer() {
1646 List<String> servers = getMucServers();
1647 return servers.size() > 0 ? servers.get(0) : null;
1648 }
1649
1650 public int getTimeToNextAttempt() {
1651 final int additionalTime = account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
1652 final int interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
1653 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1654 return interval - secondsSinceLast;
1655 }
1656
1657 public int getAttempt() {
1658 return this.attempt;
1659 }
1660
1661 public Features getFeatures() {
1662 return this.features;
1663 }
1664
1665 public long getLastSessionEstablished() {
1666 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1667 return System.currentTimeMillis() - diff;
1668 }
1669
1670 public long getLastConnect() {
1671 return this.lastConnect;
1672 }
1673
1674 public long getLastPingSent() {
1675 return this.lastPingSent;
1676 }
1677
1678 public long getLastDiscoStarted() {
1679 return this.lastDiscoStarted;
1680 }
1681
1682 public long getLastPacketReceived() {
1683 return this.lastPacketReceived;
1684 }
1685
1686 public void sendActive() {
1687 this.sendPacket(new ActivePacket());
1688 }
1689
1690 public void sendInactive() {
1691 this.sendPacket(new InactivePacket());
1692 }
1693
1694 public void resetAttemptCount(boolean resetConnectTime) {
1695 this.attempt = 0;
1696 if (resetConnectTime) {
1697 this.lastConnect = 0;
1698 }
1699 }
1700
1701 public void setInteractive(boolean interactive) {
1702 this.mInteractive = interactive;
1703 }
1704
1705 public Identity getServerIdentity() {
1706 synchronized (this.disco) {
1707 ServiceDiscoveryResult result = disco.get(account.getJid().getDomain());
1708 if (result == null) {
1709 return Identity.UNKNOWN;
1710 }
1711 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
1712 if (id.getType().equals("im") && id.getCategory().equals("server") && id.getName() != null) {
1713 switch (id.getName()) {
1714 case "Prosody":
1715 return Identity.PROSODY;
1716 case "ejabberd":
1717 return Identity.EJABBERD;
1718 case "Slack-XMPP":
1719 return Identity.SLACK;
1720 }
1721 }
1722 }
1723 }
1724 return Identity.UNKNOWN;
1725 }
1726
1727 private IqGenerator getIqGenerator() {
1728 return mXmppConnectionService.getIqGenerator();
1729 }
1730
1731 public enum Identity {
1732 FACEBOOK,
1733 SLACK,
1734 EJABBERD,
1735 PROSODY,
1736 NIMBUZZ,
1737 UNKNOWN
1738 }
1739
1740 private static class TlsFactoryVerifier {
1741 private final SSLSocketFactory factory;
1742 private final DomainHostnameVerifier verifier;
1743
1744 TlsFactoryVerifier(final SSLSocketFactory factory, final DomainHostnameVerifier verifier) throws IOException {
1745 this.factory = factory;
1746 this.verifier = verifier;
1747 if (factory == null || verifier == null) {
1748 throw new IOException("could not setup ssl");
1749 }
1750 }
1751 }
1752
1753 private class MyKeyManager implements X509KeyManager {
1754 @Override
1755 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
1756 return account.getPrivateKeyAlias();
1757 }
1758
1759 @Override
1760 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
1761 return null;
1762 }
1763
1764 @Override
1765 public X509Certificate[] getCertificateChain(String alias) {
1766 Log.d(Config.LOGTAG, "getting certificate chain");
1767 try {
1768 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
1769 } catch (Exception e) {
1770 Log.d(Config.LOGTAG, e.getMessage());
1771 return new X509Certificate[0];
1772 }
1773 }
1774
1775 @Override
1776 public String[] getClientAliases(String s, Principal[] principals) {
1777 final String alias = account.getPrivateKeyAlias();
1778 return alias != null ? new String[]{alias} : new String[0];
1779 }
1780
1781 @Override
1782 public String[] getServerAliases(String s, Principal[] principals) {
1783 return new String[0];
1784 }
1785
1786 @Override
1787 public PrivateKey getPrivateKey(String alias) {
1788 try {
1789 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
1790 } catch (Exception e) {
1791 return null;
1792 }
1793 }
1794 }
1795
1796 private static class StateChangingError extends Error {
1797 private final Account.State state;
1798
1799 public StateChangingError(Account.State state) {
1800 this.state = state;
1801 }
1802 }
1803
1804 private static class StateChangingException extends IOException {
1805 private final Account.State state;
1806
1807 public StateChangingException(Account.State state) {
1808 this.state = state;
1809 }
1810 }
1811
1812 public class Features {
1813 XmppConnection connection;
1814 private boolean carbonsEnabled = false;
1815 private boolean encryptionEnabled = false;
1816 private boolean blockListRequested = false;
1817
1818 public Features(final XmppConnection connection) {
1819 this.connection = connection;
1820 }
1821
1822 private boolean hasDiscoFeature(final Jid server, final String feature) {
1823 synchronized (XmppConnection.this.disco) {
1824 return connection.disco.containsKey(server) &&
1825 connection.disco.get(server).getFeatures().contains(feature);
1826 }
1827 }
1828
1829 public boolean carbons() {
1830 return hasDiscoFeature(account.getDomain(), "urn:xmpp:carbons:2");
1831 }
1832
1833 public boolean commands() {
1834 return hasDiscoFeature(account.getDomain(), Namespace.COMMANDS);
1835 }
1836
1837 public boolean easyOnboardingInvites() {
1838 synchronized (commands) {
1839 return commands.containsKey(Namespace.EASY_ONBOARDING_INVITE);
1840 }
1841 }
1842
1843 public boolean bookmarksConversion() {
1844 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION) && pepPublishOptions();
1845 }
1846
1847 public boolean avatarConversion() {
1848 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.AVATAR_CONVERSION) && pepPublishOptions();
1849 }
1850
1851 public boolean blocking() {
1852 return hasDiscoFeature(account.getDomain(), Namespace.BLOCKING);
1853 }
1854
1855 public boolean spamReporting() {
1856 return hasDiscoFeature(account.getDomain(), "urn:xmpp:reporting:reason:spam:0");
1857 }
1858
1859 public boolean flexibleOfflineMessageRetrieval() {
1860 return hasDiscoFeature(account.getDomain(), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
1861 }
1862
1863 public boolean register() {
1864 return hasDiscoFeature(account.getDomain(), Namespace.REGISTER);
1865 }
1866
1867 public boolean invite() {
1868 return connection.streamFeatures != null && connection.streamFeatures.hasChild("register", Namespace.INVITE);
1869 }
1870
1871 public boolean sm() {
1872 return streamId != null
1873 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1874 }
1875
1876 public boolean csi() {
1877 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1878 }
1879
1880 public boolean pep() {
1881 synchronized (XmppConnection.this.disco) {
1882 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1883 return info != null && info.hasIdentity("pubsub", "pep");
1884 }
1885 }
1886
1887 public boolean pepPersistent() {
1888 synchronized (XmppConnection.this.disco) {
1889 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1890 return info != null && info.getFeatures().contains("http://jabber.org/protocol/pubsub#persistent-items");
1891 }
1892 }
1893
1894 public boolean pepPublishOptions() {
1895 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
1896 }
1897
1898 public boolean pepOmemoWhitelisted() {
1899 return hasDiscoFeature(account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
1900 }
1901
1902 public boolean mam() {
1903 return MessageArchiveService.Version.has(getAccountFeatures());
1904 }
1905
1906 public List<String> getAccountFeatures() {
1907 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
1908 return result == null ? Collections.emptyList() : result.getFeatures();
1909 }
1910
1911 public boolean push() {
1912 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
1913 || hasDiscoFeature(account.getDomain(), Namespace.PUSH);
1914 }
1915
1916 public boolean rosterVersioning() {
1917 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1918 }
1919
1920 public void setBlockListRequested(boolean value) {
1921 this.blockListRequested = value;
1922 }
1923
1924 public boolean p1S3FileTransfer() {
1925 return hasDiscoFeature(account.getDomain(), Namespace.P1_S3_FILE_TRANSFER);
1926 }
1927
1928 public boolean httpUpload(long filesize) {
1929 if (Config.DISABLE_HTTP_UPLOAD) {
1930 return false;
1931 } else {
1932 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1933 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1934 if (items.size() > 0) {
1935 try {
1936 long maxsize = Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1937 if (filesize <= maxsize) {
1938 return true;
1939 } else {
1940 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": http upload is not available for files with size " + filesize + " (max is " + maxsize + ")");
1941 return false;
1942 }
1943 } catch (Exception e) {
1944 return true;
1945 }
1946 }
1947 }
1948 return false;
1949 }
1950 }
1951
1952 public boolean useLegacyHttpUpload() {
1953 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
1954 }
1955
1956 public long getMaxHttpUploadSize() {
1957 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1958 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1959 if (items.size() > 0) {
1960 try {
1961 return Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1962 } catch (Exception e) {
1963 //ignored
1964 }
1965 }
1966 }
1967 return -1;
1968 }
1969
1970 public boolean stanzaIds() {
1971 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
1972 }
1973
1974 public boolean bookmarks2() {
1975 return Config.USE_BOOKMARKS2 /* || hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS2_COMPAT)*/;
1976 }
1977
1978 public boolean externalServiceDiscovery() {
1979 return hasDiscoFeature(account.getDomain(), Namespace.EXTERNAL_SERVICE_DISCOVERY);
1980 }
1981 }
1982}