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.support.annotation.NonNull;
9import android.util.Base64;
10import android.util.Log;
11import android.util.Pair;
12import android.util.SparseArray;
13
14import org.xmlpull.v1.XmlPullParserException;
15
16import java.io.ByteArrayInputStream;
17import java.io.IOException;
18import java.io.InputStream;
19import java.net.ConnectException;
20import java.net.IDN;
21import java.net.InetAddress;
22import java.net.InetSocketAddress;
23import java.net.MalformedURLException;
24import java.net.Socket;
25import java.net.URL;
26import java.net.UnknownHostException;
27import java.security.KeyManagementException;
28import java.security.NoSuchAlgorithmException;
29import java.security.Principal;
30import java.security.PrivateKey;
31import java.security.cert.X509Certificate;
32import java.util.ArrayList;
33import java.util.Arrays;
34import java.util.Collections;
35import java.util.HashMap;
36import java.util.HashSet;
37import java.util.Hashtable;
38import java.util.Iterator;
39import java.util.List;
40import java.util.Map.Entry;
41import java.util.Set;
42import java.util.concurrent.CountDownLatch;
43import java.util.concurrent.TimeUnit;
44import java.util.concurrent.atomic.AtomicBoolean;
45import java.util.concurrent.atomic.AtomicInteger;
46import java.util.regex.Matcher;
47
48import javax.net.ssl.KeyManager;
49import javax.net.ssl.SSLContext;
50import javax.net.ssl.SSLSocket;
51import javax.net.ssl.SSLSocketFactory;
52import javax.net.ssl.X509KeyManager;
53import javax.net.ssl.X509TrustManager;
54
55import eu.siacs.conversations.Config;
56import eu.siacs.conversations.R;
57import eu.siacs.conversations.crypto.DomainHostnameVerifier;
58import eu.siacs.conversations.crypto.XmppDomainVerifier;
59import eu.siacs.conversations.crypto.axolotl.AxolotlService;
60import eu.siacs.conversations.crypto.sasl.Anonymous;
61import eu.siacs.conversations.crypto.sasl.DigestMd5;
62import eu.siacs.conversations.crypto.sasl.External;
63import eu.siacs.conversations.crypto.sasl.Plain;
64import eu.siacs.conversations.crypto.sasl.SaslMechanism;
65import eu.siacs.conversations.crypto.sasl.ScramSha1;
66import eu.siacs.conversations.crypto.sasl.ScramSha256;
67import eu.siacs.conversations.entities.Account;
68import eu.siacs.conversations.entities.Message;
69import eu.siacs.conversations.entities.ServiceDiscoveryResult;
70import eu.siacs.conversations.generator.IqGenerator;
71import eu.siacs.conversations.persistance.FileBackend;
72import eu.siacs.conversations.services.MemorizingTrustManager;
73import eu.siacs.conversations.services.MessageArchiveService;
74import eu.siacs.conversations.services.NotificationService;
75import eu.siacs.conversations.services.XmppConnectionService;
76import eu.siacs.conversations.utils.CryptoHelper;
77import eu.siacs.conversations.utils.Patterns;
78import eu.siacs.conversations.utils.Resolver;
79import eu.siacs.conversations.utils.SSLSocketHelper;
80import eu.siacs.conversations.utils.SocksSocketFactory;
81import eu.siacs.conversations.utils.XmlHelper;
82import eu.siacs.conversations.xml.Element;
83import eu.siacs.conversations.xml.LocalizedContent;
84import eu.siacs.conversations.xml.Namespace;
85import eu.siacs.conversations.xml.Tag;
86import eu.siacs.conversations.xml.TagWriter;
87import eu.siacs.conversations.xml.XmlReader;
88import eu.siacs.conversations.xmpp.forms.Data;
89import eu.siacs.conversations.xmpp.forms.Field;
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;
103
104public class XmppConnection implements Runnable {
105
106 private static final int PACKET_IQ = 0;
107 private static final int PACKET_MESSAGE = 1;
108 private static final int PACKET_PRESENCE = 2;
109 public final OnIqPacketReceived registrationResponseListener = new OnIqPacketReceived() {
110 @Override
111 public void onIqPacketReceived(Account account, IqPacket 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 };
137 protected final Account account;
138 private final Features features = new Features(this);
139 private final HashMap<Jid, ServiceDiscoveryResult> disco = new HashMap<>();
140 private final 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 AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
162 private AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
163 private AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
164 private 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 void prepareNewConnection() {
232 this.lastConnect = SystemClock.elapsedRealtime();
233 this.lastPingSent = SystemClock.elapsedRealtime();
234 this.lastDiscoStarted = Long.MAX_VALUE;
235 this.mWaitingForSmCatchup.set(false);
236 this.changeStatus(Account.State.CONNECTING);
237 }
238
239 public boolean isWaitingForSmCatchup() {
240 return mWaitingForSmCatchup.get();
241 }
242
243 public void incrementSmCatchupMessageCounter() {
244 this.mSmCatchupMessageCounter.incrementAndGet();
245 }
246
247 protected void connect() {
248 if (mXmppConnectionService.areMessagesInitialized()) {
249 mXmppConnectionService.resetSendingToWaiting(account);
250 }
251 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
252 features.encryptionEnabled = false;
253 inSmacksSession = false;
254 isBound = false;
255 this.attempt++;
256 this.verifiedHostname = null; //will be set if user entered hostname is being used or hostname was verified with dnssec
257 try {
258 Socket localSocket;
259 shouldAuthenticate = !account.isOptionSet(Account.OPTION_REGISTER);
260 this.changeStatus(Account.State.CONNECTING);
261 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
262 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
263 if (useTor) {
264 String destination;
265 if (account.getHostname().isEmpty() || account.isOnion()) {
266 destination = account.getServer();
267 } else {
268 destination = account.getHostname();
269 this.verifiedHostname = destination;
270 }
271
272 final int port = account.getPort();
273 final boolean directTls = Resolver.useDirectTls(port);
274
275 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": connect to " + destination + " via Tor. directTls=" + directTls);
276 localSocket = SocksSocketFactory.createSocketOverTor(destination, port);
277
278 if (directTls) {
279 localSocket = upgradeSocketToTls(localSocket);
280 features.encryptionEnabled = true;
281 }
282
283 try {
284 startXmpp(localSocket);
285 } catch (InterruptedException e) {
286 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
287 return;
288 } catch (Exception e) {
289 throw new IOException(e.getMessage());
290 }
291 } else {
292 final String domain = account.getServer();
293 final List<Resolver.Result> results;
294 final boolean hardcoded = extended && !account.getHostname().isEmpty();
295 if (hardcoded) {
296 results = Resolver.fromHardCoded(account.getHostname(), account.getPort());
297 } else {
298 results = Resolver.resolve(domain);
299 }
300 if (Thread.currentThread().isInterrupted()) {
301 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
302 return;
303 }
304 if (results.size() == 0) {
305 Log.e(Config.LOGTAG, account.getJid().asBareJid() + ": Resolver results were empty");
306 return;
307 }
308 final Resolver.Result storedBackupResult;
309 if (hardcoded) {
310 storedBackupResult = null;
311 } else {
312 storedBackupResult = mXmppConnectionService.databaseBackend.findResolverResult(domain);
313 if (storedBackupResult != null && !results.contains(storedBackupResult)) {
314 results.add(storedBackupResult);
315 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": loaded backup resolver result from db: " + storedBackupResult);
316 }
317 }
318 for (Iterator<Resolver.Result> iterator = results.iterator(); iterator.hasNext(); ) {
319 final Resolver.Result result = iterator.next();
320 if (Thread.currentThread().isInterrupted()) {
321 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
322 return;
323 }
324 try {
325 // if tls is true, encryption is implied and must not be started
326 features.encryptionEnabled = result.isDirectTls();
327 verifiedHostname = result.isAuthenticated() ? result.getHostname().toString() : null;
328 Log.d(Config.LOGTAG, "verified hostname " + verifiedHostname);
329 final InetSocketAddress addr;
330 if (result.getIp() != null) {
331 addr = new InetSocketAddress(result.getIp(), result.getPort());
332 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
333 + ": using values from resolver " + (result.getHostname() == null ? "" : result.getHostname().toString()
334 + "/") + result.getIp().getHostAddress() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
335 } else {
336 addr = new InetSocketAddress(IDN.toASCII(result.getHostname().toString()), result.getPort());
337 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
338 + ": using values from resolver "
339 + result.getHostname().toString() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
340 }
341
342 localSocket = new Socket();
343 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
344
345 if (features.encryptionEnabled) {
346 localSocket = upgradeSocketToTls(localSocket);
347 }
348
349 localSocket.setSoTimeout(Config.SOCKET_TIMEOUT * 1000);
350 if (startXmpp(localSocket)) {
351 localSocket.setSoTimeout(0); //reset to 0; once the connection is established we don’t want this
352 if (!hardcoded && !result.equals(storedBackupResult)) {
353 mXmppConnectionService.databaseBackend.saveResolverResult(domain, result);
354 }
355 break; // successfully connected to server that speaks xmpp
356 } else {
357 FileBackend.close(localSocket);
358 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
359 }
360 } catch (final StateChangingException e) {
361 if (!iterator.hasNext()) {
362 throw e;
363 }
364 } catch (InterruptedException e) {
365 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
366 return;
367 } catch (final Throwable e) {
368 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage() + "(" + e.getClass().getName() + ")");
369 if (!iterator.hasNext()) {
370 throw new UnknownHostException();
371 }
372 }
373 }
374 }
375 processStream();
376 } catch (final SecurityException e) {
377 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
378 } catch (final StateChangingException e) {
379 this.changeStatus(e.state);
380 } catch (final UnknownHostException | ConnectException e) {
381 this.changeStatus(Account.State.SERVER_NOT_FOUND);
382 } catch (final SocksSocketFactory.HostNotFoundException e) {
383 this.changeStatus(Account.State.SERVER_NOT_FOUND);
384 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
385 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
386 } catch (final IOException | XmlPullParserException e) {
387 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
388 this.changeStatus(Account.State.OFFLINE);
389 this.attempt = Math.max(0, this.attempt - 1);
390 } finally {
391 if (!Thread.currentThread().isInterrupted()) {
392 forceCloseSocket();
393 } else {
394 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not force closing socket because thread was interrupted");
395 }
396 }
397 }
398
399 /**
400 * Starts xmpp protocol, call after connecting to socket
401 *
402 * @return true if server returns with valid xmpp, false otherwise
403 */
404 private boolean startXmpp(Socket socket) throws Exception {
405 if (Thread.currentThread().isInterrupted()) {
406 throw new InterruptedException();
407 }
408 this.socket = socket;
409 tagReader = new XmlReader();
410 if (tagWriter != null) {
411 tagWriter.forceClose();
412 }
413 tagWriter = new TagWriter();
414 tagWriter.setOutputStream(socket.getOutputStream());
415 tagReader.setInputStream(socket.getInputStream());
416 tagWriter.beginDocument();
417 sendStartStream();
418 final Tag tag = tagReader.readTag();
419 if (Thread.currentThread().isInterrupted()) {
420 throw new InterruptedException();
421 }
422 if (socket instanceof SSLSocket) {
423 SSLSocketHelper.log(account, (SSLSocket) socket);
424 }
425 return tag != null && tag.isStart("stream");
426 }
427
428 private TlsFactoryVerifier getTlsFactoryVerifier() throws NoSuchAlgorithmException, KeyManagementException, IOException {
429 final SSLContext sc = SSLSocketHelper.getSSLContext();
430 final MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
431 final KeyManager[] keyManager;
432 if (account.getPrivateKeyAlias() != null) {
433 keyManager = new KeyManager[]{new MyKeyManager()};
434 } else {
435 keyManager = null;
436 }
437 final String domain = account.getServer();
438 sc.init(keyManager, new X509TrustManager[]{mInteractive ? trustManager.getInteractive(domain) : trustManager.getNonInteractive(domain)}, mXmppConnectionService.getRNG());
439 final SSLSocketFactory factory = sc.getSocketFactory();
440 final DomainHostnameVerifier verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier(), mInteractive);
441 return new TlsFactoryVerifier(factory, verifier);
442 }
443
444 @Override
445 public void run() {
446 synchronized (this) {
447 this.mThread = Thread.currentThread();
448 if (this.mThread.isInterrupted()) {
449 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": aborting connect because thread was interrupted");
450 return;
451 }
452 forceCloseSocket();
453 }
454 connect();
455 }
456
457 private void processStream() throws XmlPullParserException, IOException {
458 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
459 this.mStreamCountDownLatch = streamCountDownLatch;
460 Tag nextTag = tagReader.readTag();
461 while (nextTag != null && !nextTag.isEnd("stream")) {
462 if (nextTag.isStart("error")) {
463 processStreamError(nextTag);
464 } else if (nextTag.isStart("features")) {
465 processStreamFeatures(nextTag);
466 } else if (nextTag.isStart("proceed")) {
467 switchOverToTls();
468 } else if (nextTag.isStart("success")) {
469 final String challenge = tagReader.readElement(nextTag).getContent();
470 try {
471 saslMechanism.getResponse(challenge);
472 } catch (final SaslMechanism.AuthenticationException e) {
473 Log.e(Config.LOGTAG, String.valueOf(e));
474 throw new StateChangingException(Account.State.UNAUTHORIZED);
475 }
476 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": logged in");
477 account.setKey(Account.PINNED_MECHANISM_KEY,
478 String.valueOf(saslMechanism.getPriority()));
479 tagReader.reset();
480 sendStartStream();
481 final Tag tag = tagReader.readTag();
482 if (tag != null && tag.isStart("stream")) {
483 processStream();
484 } else {
485 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
486 }
487 break;
488 } else if (nextTag.isStart("failure")) {
489 final Element failure = tagReader.readElement(nextTag);
490 if (Namespace.SASL.equals(failure.getNamespace())) {
491 final String text = failure.findChildContent("text");
492 if (failure.hasChild("account-disabled") && text != null) {
493 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
494 if (matcher.find()) {
495 try {
496 URL url = new URL(text.substring(matcher.start(), matcher.end()));
497 if (url.getProtocol().equals("https")) {
498 this.redirectionUrl = url;
499 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
500 }
501 } catch (MalformedURLException e) {
502 throw new StateChangingException(Account.State.UNAUTHORIZED);
503 }
504 }
505 }
506 throw new StateChangingException(Account.State.UNAUTHORIZED);
507 } else if (Namespace.TLS.equals(failure.getNamespace())) {
508 throw new StateChangingException(Account.State.TLS_ERROR);
509 } else {
510 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
511 }
512 } else if (nextTag.isStart("challenge")) {
513 final String challenge = tagReader.readElement(nextTag).getContent();
514 final Element response = new Element("response", Namespace.SASL);
515 try {
516 response.setContent(saslMechanism.getResponse(challenge));
517 } catch (final SaslMechanism.AuthenticationException e) {
518 // TODO: Send auth abort tag.
519 Log.e(Config.LOGTAG, e.toString());
520 }
521 tagWriter.writeElement(response);
522 } else if (nextTag.isStart("enabled")) {
523 final Element enabled = tagReader.readElement(nextTag);
524 if ("true".equals(enabled.getAttribute("resume"))) {
525 this.streamId = enabled.getAttribute("id");
526 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
527 + ": stream management(" + smVersion
528 + ") enabled (resumable)");
529 } else {
530 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
531 + ": stream management(" + smVersion + ") enabled");
532 }
533 this.stanzasReceived = 0;
534 this.inSmacksSession = true;
535 final RequestPacket r = new RequestPacket(smVersion);
536 tagWriter.writeStanzaAsync(r);
537 } else if (nextTag.isStart("resumed")) {
538 this.inSmacksSession = true;
539 this.isBound = true;
540 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
541 lastPacketReceived = SystemClock.elapsedRealtime();
542 final Element resumed = tagReader.readElement(nextTag);
543 final String h = resumed.getAttribute("h");
544 try {
545 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
546 final boolean acknowledgedMessages;
547 synchronized (this.mStanzaQueue) {
548 final int serverCount = Integer.parseInt(h);
549 if (serverCount < stanzasSent) {
550 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
551 + ": session resumed with lost packages");
552 stanzasSent = serverCount;
553 } else {
554 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": session resumed");
555 }
556 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
557 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
558 failedStanzas.add(mStanzaQueue.valueAt(i));
559 }
560 mStanzaQueue.clear();
561 }
562 if (acknowledgedMessages) {
563 mXmppConnectionService.updateConversationUi();
564 }
565 Log.d(Config.LOGTAG, "resending " + failedStanzas.size() + " stanzas");
566 for (AbstractAcknowledgeableStanza packet : failedStanzas) {
567 if (packet instanceof MessagePacket) {
568 MessagePacket message = (MessagePacket) packet;
569 mXmppConnectionService.markMessage(account,
570 message.getTo().asBareJid(),
571 message.getId(),
572 Message.STATUS_UNSEND);
573 }
574 sendPacket(packet);
575 }
576 } catch (final NumberFormatException ignored) {
577 }
578 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
579 changeStatus(Account.State.ONLINE);
580 } else if (nextTag.isStart("r")) {
581 tagReader.readElement(nextTag);
582 if (Config.EXTENDED_SM_LOGGING) {
583 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
584 }
585 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
586 tagWriter.writeStanzaAsync(ack);
587 } else if (nextTag.isStart("a")) {
588 boolean accountUiNeedsRefresh = false;
589 synchronized (NotificationService.CATCHUP_LOCK) {
590 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
591 final int messageCount = mSmCatchupMessageCounter.get();
592 final int pendingIQs = packetCallbacks.size();
593 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": SM catchup complete (messages=" + messageCount + ", pending IQs=" + pendingIQs + ")");
594 accountUiNeedsRefresh = true;
595 if (messageCount > 0) {
596 mXmppConnectionService.getNotificationService().finishBacklog(true, account);
597 }
598 }
599 }
600 if (accountUiNeedsRefresh) {
601 mXmppConnectionService.updateAccountUi();
602 }
603 final Element ack = tagReader.readElement(nextTag);
604 lastPacketReceived = SystemClock.elapsedRealtime();
605 try {
606 final boolean acknowledgedMessages;
607 synchronized (this.mStanzaQueue) {
608 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
609 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence);
610 }
611 if (acknowledgedMessages) {
612 mXmppConnectionService.updateConversationUi();
613 }
614 } catch (NumberFormatException | NullPointerException e) {
615 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server send ack without sequence number");
616 }
617 } else if (nextTag.isStart("failed")) {
618 Element failed = tagReader.readElement(nextTag);
619 try {
620 final int serverCount = Integer.parseInt(failed.getAttribute("h"));
621 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed but server acknowledged stanza #" + serverCount);
622 final boolean acknowledgedMessages;
623 synchronized (this.mStanzaQueue) {
624 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
625 }
626 if (acknowledgedMessages) {
627 mXmppConnectionService.updateConversationUi();
628 }
629 } catch (NumberFormatException | NullPointerException e) {
630 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
631 }
632 resetStreamId();
633 sendBindRequest();
634 } else if (nextTag.isStart("iq")) {
635 processIq(nextTag);
636 } else if (nextTag.isStart("message")) {
637 processMessage(nextTag);
638 } else if (nextTag.isStart("presence")) {
639 processPresence(nextTag);
640 }
641 nextTag = tagReader.readTag();
642 }
643 if (nextTag != null && nextTag.isEnd("stream")) {
644 streamCountDownLatch.countDown();
645 }
646 }
647
648 private boolean acknowledgeStanzaUpTo(int serverCount) {
649 if (serverCount > stanzasSent) {
650 Log.e(Config.LOGTAG, "server acknowledged more stanzas than we sent. serverCount=" + serverCount + ", ourCount=" + stanzasSent);
651 }
652 boolean acknowledgedMessages = false;
653 for (int i = 0; i < mStanzaQueue.size(); ++i) {
654 if (serverCount >= mStanzaQueue.keyAt(i)) {
655 if (Config.EXTENDED_SM_LOGGING) {
656 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
657 }
658 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
659 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
660 MessagePacket packet = (MessagePacket) stanza;
661 acknowledgedMessages |= acknowledgedListener.onMessageAcknowledged(account, packet.getId());
662 }
663 mStanzaQueue.removeAt(i);
664 i--;
665 }
666 }
667 return acknowledgedMessages;
668 }
669
670 private @NonNull
671 Element processPacket(final Tag currentTag, final int packetType) throws IOException {
672 final Element element;
673 switch (packetType) {
674 case PACKET_IQ:
675 element = new IqPacket();
676 break;
677 case PACKET_MESSAGE:
678 element = new MessagePacket();
679 break;
680 case PACKET_PRESENCE:
681 element = new PresencePacket();
682 break;
683 default:
684 throw new AssertionError("Should never encounter invalid type");
685 }
686 element.setAttributes(currentTag.getAttributes());
687 Tag nextTag = tagReader.readTag();
688 if (nextTag == null) {
689 throw new IOException("interrupted mid tag");
690 }
691 while (!nextTag.isEnd(element.getName())) {
692 if (!nextTag.isNo()) {
693 element.addChild(tagReader.readElement(nextTag));
694 }
695 nextTag = tagReader.readTag();
696 if (nextTag == null) {
697 throw new IOException("interrupted mid tag");
698 }
699 }
700 if (stanzasReceived == Integer.MAX_VALUE) {
701 resetStreamId();
702 throw new IOException("time to restart the session. cant handle >2 billion pcks");
703 }
704 if (inSmacksSession) {
705 ++stanzasReceived;
706 } else if (features.sm()) {
707 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not counting stanza(" + element.getClass().getSimpleName() + "). Not in smacks session.");
708 }
709 lastPacketReceived = SystemClock.elapsedRealtime();
710 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
711 Log.d(Config.LOGTAG, "[background stanza] " + element);
712 }
713 if (element instanceof IqPacket
714 && (((IqPacket) element).getType() == IqPacket.TYPE.SET)
715 && element.hasChild("jingle", Namespace.JINGLE)) {
716 return JinglePacket.upgrade((IqPacket) element);
717 } else {
718 return element;
719 }
720 }
721
722 private void processIq(final Tag currentTag) throws IOException {
723 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
724 if (!packet.valid()) {
725 Log.e(Config.LOGTAG, "encountered invalid iq from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
726 return;
727 }
728 if (packet instanceof JinglePacket) {
729 if (this.jingleListener != null) {
730 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
731 }
732 } else {
733 OnIqPacketReceived callback = null;
734 synchronized (this.packetCallbacks) {
735 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
736 if (packetCallbackDuple != null) {
737 // Packets to the server should have responses from the server
738 if (packetCallbackDuple.first.toServer(account)) {
739 if (packet.fromServer(account)) {
740 callback = packetCallbackDuple.second;
741 packetCallbacks.remove(packet.getId());
742 } else {
743 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
744 }
745 } else {
746 if (packet.getFrom() != null && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
747 callback = packetCallbackDuple.second;
748 packetCallbacks.remove(packet.getId());
749 } else {
750 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
751 }
752 }
753 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
754 callback = this.unregisteredIqListener;
755 }
756 }
757 if (callback != null) {
758 try {
759 callback.onIqPacketReceived(account, packet);
760 } catch (StateChangingError error) {
761 throw new StateChangingException(error.state);
762 }
763 }
764 }
765 }
766
767 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
768 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
769 if (!packet.valid()) {
770 Log.e(Config.LOGTAG, "encountered invalid message from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
771 return;
772 }
773 this.messageListener.onMessagePacketReceived(account, packet);
774 }
775
776 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
777 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
778 if (!packet.valid()) {
779 Log.e(Config.LOGTAG, "encountered invalid presence from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
780 return;
781 }
782 this.presenceListener.onPresencePacketReceived(account, packet);
783 }
784
785 private void sendStartTLS() throws IOException {
786 final Tag startTLS = Tag.empty("starttls");
787 startTLS.setAttribute("xmlns", Namespace.TLS);
788 tagWriter.writeTag(startTLS);
789 }
790
791 private void switchOverToTls() throws XmlPullParserException, IOException {
792 tagReader.readTag();
793 final Socket socket = this.socket;
794 final SSLSocket sslSocket = upgradeSocketToTls(socket);
795 tagReader.setInputStream(sslSocket.getInputStream());
796 tagWriter.setOutputStream(sslSocket.getOutputStream());
797 sendStartStream();
798 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
799 features.encryptionEnabled = true;
800 final Tag tag = tagReader.readTag();
801 if (tag != null && tag.isStart("stream")) {
802 SSLSocketHelper.log(account, sslSocket);
803 processStream();
804 } else {
805 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
806 }
807 sslSocket.close();
808 }
809
810 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
811 final TlsFactoryVerifier tlsFactoryVerifier;
812 try {
813 tlsFactoryVerifier = getTlsFactoryVerifier();
814 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
815 throw new StateChangingException(Account.State.TLS_ERROR);
816 }
817 final InetAddress address = socket.getInetAddress();
818 final SSLSocket sslSocket = (SSLSocket) tlsFactoryVerifier.factory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
819 SSLSocketHelper.setSecurity(sslSocket);
820 SSLSocketHelper.setHostname(sslSocket, account.getServer());
821 SSLSocketHelper.setApplicationProtocol(sslSocket, "xmpp-client");
822 if (!tlsFactoryVerifier.verifier.verify(account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
823 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate verification failed");
824 FileBackend.close(sslSocket);
825 throw new StateChangingException(Account.State.TLS_ERROR);
826 }
827 return sslSocket;
828 }
829
830 private void processStreamFeatures(final Tag currentTag) throws XmlPullParserException, IOException {
831 this.streamFeatures = tagReader.readElement(currentTag);
832 final boolean isSecure = features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
833 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
834 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
835 sendStartTLS();
836 } else if (this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
837 if (isSecure) {
838 register();
839 } else {
840 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find STARTTLS for registration process " + XmlHelper.printElementNames(this.streamFeatures));
841 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
842 }
843 } else if (!this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
844 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
845 } else if (this.streamFeatures.hasChild("mechanisms") && shouldAuthenticate && isSecure) {
846 authenticate();
847 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
848 if (Config.EXTENDED_SM_LOGGING) {
849 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resuming after stanza #" + stanzasReceived);
850 }
851 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
852 this.mSmCatchupMessageCounter.set(0);
853 this.mWaitingForSmCatchup.set(true);
854 this.tagWriter.writeStanzaAsync(resume);
855 } else if (needsBinding) {
856 if (this.streamFeatures.hasChild("bind") && isSecure) {
857 sendBindRequest();
858 } else {
859 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find bind feature " + XmlHelper.printElementNames(this.streamFeatures));
860 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
861 }
862 }
863 }
864
865 private void authenticate() throws IOException {
866 final List<String> mechanisms = extractMechanisms(streamFeatures
867 .findChild("mechanisms"));
868 final Element auth = new Element("auth", Namespace.SASL);
869 if (mechanisms.contains("EXTERNAL") && account.getPrivateKeyAlias() != null) {
870 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
871 } else if (mechanisms.contains("SCRAM-SHA-256")) {
872 saslMechanism = new ScramSha256(tagWriter, account, mXmppConnectionService.getRNG());
873 } else if (mechanisms.contains("SCRAM-SHA-1")) {
874 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
875 } else if (mechanisms.contains("PLAIN") && !account.getJid().getDomain().toEscapedString().equals("nimbuzz.com")) {
876 saslMechanism = new Plain(tagWriter, account);
877 } else if (mechanisms.contains("DIGEST-MD5")) {
878 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
879 } else if (mechanisms.contains("ANONYMOUS")) {
880 saslMechanism = new Anonymous(tagWriter, account, mXmppConnectionService.getRNG());
881 }
882 if (saslMechanism != null) {
883 final int pinnedMechanism = account.getKeyAsInt(Account.PINNED_MECHANISM_KEY, -1);
884 if (pinnedMechanism > saslMechanism.getPriority()) {
885 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
886 " has lower priority (" + saslMechanism.getPriority() +
887 ") than pinned priority (" + pinnedMechanism +
888 "). Possible downgrade attack?");
889 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
890 }
891 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
892 auth.setAttribute("mechanism", saslMechanism.getMechanism());
893 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
894 auth.setContent(saslMechanism.getClientFirstMessage());
895 }
896 tagWriter.writeElement(auth);
897 } else {
898 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find supported SASL mechanism in " + mechanisms);
899 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
900 }
901 }
902
903 private List<String> extractMechanisms(final Element stream) {
904 final ArrayList<String> mechanisms = new ArrayList<>(stream
905 .getChildren().size());
906 for (final Element child : stream.getChildren()) {
907 mechanisms.add(child.getContent());
908 }
909 return mechanisms;
910 }
911
912
913 private void register() {
914 final String preAuth = account.getKey(Account.PRE_AUTH_REGISTRATION_TOKEN);
915 if (preAuth != null && features.invite()) {
916 final IqPacket preAuthRequest = new IqPacket(IqPacket.TYPE.SET);
917 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
918 sendUnmodifiedIqPacket(preAuthRequest, (account, response) -> {
919 if (response.getType() == IqPacket.TYPE.RESULT) {
920 sendRegistryRequest();
921 } else {
922 final Element error = response.getError();
923 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": failed to pre auth. " + error);
924 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
925 }
926 }, true);
927 } else {
928 sendRegistryRequest();
929 }
930 }
931
932 private void sendRegistryRequest() {
933 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
934 register.query(Namespace.REGISTER);
935 register.setTo(account.getDomain());
936 sendUnmodifiedIqPacket(register, (account, packet) -> {
937 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
938 return;
939 }
940 if (packet.getType() == IqPacket.TYPE.ERROR) {
941 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
942 }
943 final Element query = packet.query(Namespace.REGISTER);
944 if (query.hasChild("username") && (query.hasChild("password"))) {
945 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
946 final Element username = new Element("username").setContent(account.getUsername());
947 final Element password = new Element("password").setContent(account.getPassword());
948 register1.query(Namespace.REGISTER).addChild(username);
949 register1.query().addChild(password);
950 register1.setFrom(account.getJid().asBareJid());
951 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
952 } else if (query.hasChild("x", Namespace.DATA)) {
953 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
954 final Element blob = query.findChild("data", "urn:xmpp:bob");
955 final String id = packet.getId();
956 InputStream is;
957 if (blob != null) {
958 try {
959 final String base64Blob = blob.getContent();
960 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
961 is = new ByteArrayInputStream(strBlob);
962 } catch (Exception e) {
963 is = null;
964 }
965 } else {
966 try {
967 Field field = data.getFieldByName("url");
968 URL url = field != null && field.getValue() != null ? new URL(field.getValue()) : null;
969 is = url != null ? url.openStream() : null;
970 } catch (IOException e) {
971 is = null;
972 }
973 }
974
975 if (is != null) {
976 Bitmap captcha = BitmapFactory.decodeStream(is);
977 try {
978 if (mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha)) {
979 return;
980 }
981 } catch (Exception e) {
982 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
983 }
984 }
985 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
986 } else if (query.hasChild("instructions") || query.hasChild("x", Namespace.OOB)) {
987 final String instructions = query.findChildContent("instructions");
988 final Element oob = query.findChild("x", Namespace.OOB);
989 final String url = oob == null ? null : oob.findChildContent("url");
990 if (url != null) {
991 setAccountCreationFailed(url);
992 } else if (instructions != null) {
993 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
994 if (matcher.find()) {
995 setAccountCreationFailed(instructions.substring(matcher.start(), matcher.end()));
996 }
997 }
998 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
999 }
1000 }, true);
1001 }
1002
1003 private void setAccountCreationFailed(String url) {
1004 if (url != null) {
1005 try {
1006 this.redirectionUrl = new URL(url);
1007 if (this.redirectionUrl.getProtocol().equals("https")) {
1008 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1009 }
1010 } catch (MalformedURLException e) {
1011 //fall through
1012 }
1013 }
1014 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1015 }
1016
1017 public URL getRedirectionUrl() {
1018 return this.redirectionUrl;
1019 }
1020
1021 public void resetEverything() {
1022 resetAttemptCount(true);
1023 resetStreamId();
1024 clearIqCallbacks();
1025 this.stanzasSent = 0;
1026 mStanzaQueue.clear();
1027 this.redirectionUrl = null;
1028 synchronized (this.disco) {
1029 disco.clear();
1030 }
1031 }
1032
1033 private void sendBindRequest() {
1034 try {
1035 mXmppConnectionService.restoredFromDatabaseLatch.await();
1036 } catch (InterruptedException e) {
1037 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while waiting for DB restore during bind");
1038 return;
1039 }
1040 clearIqCallbacks();
1041 if (account.getJid().isBareJid()) {
1042 account.setResource(this.createNewResource());
1043 } else {
1044 fixResource(mXmppConnectionService, account);
1045 }
1046 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1047 final String resource = Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1048 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1049 this.sendUnmodifiedIqPacket(iq, (account, packet) -> {
1050 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1051 return;
1052 }
1053 final Element bind = packet.findChild("bind");
1054 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1055 isBound = true;
1056 final Element jid = bind.findChild("jid");
1057 if (jid != null && jid.getContent() != null) {
1058 try {
1059 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1060 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1061 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server tried to re-assign domain to " + assignedJid.getDomain());
1062 throw new StateChangingError(Account.State.BIND_FAILURE);
1063 }
1064 if (account.setJid(assignedJid)) {
1065 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": jid changed during bind. updating database");
1066 mXmppConnectionService.databaseBackend.updateAccount(account);
1067 }
1068 if (streamFeatures.hasChild("session")
1069 && !streamFeatures.findChild("session").hasChild("optional")) {
1070 sendStartSession();
1071 } else {
1072 sendPostBindInitialization();
1073 }
1074 return;
1075 } catch (final IllegalArgumentException e) {
1076 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server reported invalid jid (" + jid.getContent() + ") on bind");
1077 }
1078 } else {
1079 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure. (no jid)");
1080 }
1081 } else {
1082 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet.toString());
1083 }
1084 final Element error = packet.findChild("error");
1085 if (packet.getType() == IqPacket.TYPE.ERROR && error != null && error.hasChild("conflict")) {
1086 account.setResource(createNewResource());
1087 }
1088 throw new StateChangingError(Account.State.BIND_FAILURE);
1089 }, true);
1090 }
1091
1092 private void clearIqCallbacks() {
1093 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1094 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1095 synchronized (this.packetCallbacks) {
1096 if (this.packetCallbacks.size() == 0) {
1097 return;
1098 }
1099 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": clearing " + this.packetCallbacks.size() + " iq callbacks");
1100 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
1101 while (iterator.hasNext()) {
1102 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1103 callbacks.add(entry.second);
1104 iterator.remove();
1105 }
1106 }
1107 for (OnIqPacketReceived callback : callbacks) {
1108 try {
1109 callback.onIqPacketReceived(account, failurePacket);
1110 } catch (StateChangingError error) {
1111 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": caught StateChangingError(" + error.state.toString() + ") while clearing callbacks");
1112 //ignore
1113 }
1114 }
1115 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
1116 }
1117
1118 public void sendDiscoTimeout() {
1119 if (mWaitForDisco.compareAndSet(true, false)) {
1120 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1121 finalizeBind();
1122 }
1123 }
1124
1125 private void sendStartSession() {
1126 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": sending legacy session to outdated server");
1127 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1128 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1129 this.sendUnmodifiedIqPacket(startSession, (account, packet) -> {
1130 if (packet.getType() == IqPacket.TYPE.RESULT) {
1131 sendPostBindInitialization();
1132 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1133 throw new StateChangingError(Account.State.SESSION_FAILURE);
1134 }
1135 }, true);
1136 }
1137
1138 private void sendPostBindInitialization() {
1139 smVersion = 0;
1140 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
1141 smVersion = 3;
1142 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
1143 smVersion = 2;
1144 }
1145 if (smVersion != 0) {
1146 synchronized (this.mStanzaQueue) {
1147 final EnablePacket enable = new EnablePacket(smVersion);
1148 tagWriter.writeStanzaAsync(enable);
1149 stanzasSent = 0;
1150 mStanzaQueue.clear();
1151 }
1152 }
1153 features.carbonsEnabled = false;
1154 features.blockListRequested = false;
1155 synchronized (this.disco) {
1156 this.disco.clear();
1157 }
1158 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1159 mPendingServiceDiscoveries.set(0);
1160 if (smVersion == 0 || Patches.DISCO_EXCEPTIONS.contains(account.getJid().getDomain().toEscapedString())) {
1161 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": do not wait for service discovery");
1162 mWaitForDisco.set(false);
1163 } else {
1164 mWaitForDisco.set(true);
1165 }
1166 lastDiscoStarted = SystemClock.elapsedRealtime();
1167 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1168 Element caps = streamFeatures.findChild("c");
1169 final String hash = caps == null ? null : caps.getAttribute("hash");
1170 final String ver = caps == null ? null : caps.getAttribute("ver");
1171 ServiceDiscoveryResult discoveryResult = null;
1172 if (hash != null && ver != null) {
1173 discoveryResult = mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1174 }
1175 final boolean requestDiscoItemsFirst = !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1176 if (requestDiscoItemsFirst) {
1177 sendServiceDiscoveryItems(account.getDomain());
1178 }
1179 if (discoveryResult == null) {
1180 sendServiceDiscoveryInfo(account.getDomain());
1181 } else {
1182 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1183 disco.put(account.getDomain(), discoveryResult);
1184 }
1185 discoverMamPreferences();
1186 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1187 if (!requestDiscoItemsFirst) {
1188 sendServiceDiscoveryItems(account.getDomain());
1189 }
1190
1191 if (!mWaitForDisco.get()) {
1192 finalizeBind();
1193 }
1194 this.lastSessionStarted = SystemClock.elapsedRealtime();
1195 }
1196
1197 private void sendServiceDiscoveryInfo(final Jid jid) {
1198 mPendingServiceDiscoveries.incrementAndGet();
1199 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1200 iq.setTo(jid);
1201 iq.query("http://jabber.org/protocol/disco#info");
1202 this.sendIqPacket(iq, (account, packet) -> {
1203 if (packet.getType() == IqPacket.TYPE.RESULT) {
1204 boolean advancedStreamFeaturesLoaded;
1205 synchronized (XmppConnection.this.disco) {
1206 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1207 if (jid.equals(account.getDomain())) {
1208 mXmppConnectionService.databaseBackend.insertDiscoveryResult(result);
1209 }
1210 disco.put(jid, result);
1211 advancedStreamFeaturesLoaded = disco.containsKey(account.getDomain())
1212 && disco.containsKey(account.getJid().asBareJid());
1213 }
1214 if (advancedStreamFeaturesLoaded && (jid.equals(account.getDomain()) || jid.equals(account.getJid().asBareJid()))) {
1215 enableAdvancedStreamFeatures();
1216 }
1217 } else if (packet.getType() == IqPacket.TYPE.ERROR) {
1218 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco info for " + jid.toString());
1219 final boolean serverOrAccount = jid.equals(account.getDomain()) || jid.equals(account.getJid().asBareJid());
1220 final boolean advancedStreamFeaturesLoaded;
1221 if (serverOrAccount) {
1222 synchronized (XmppConnection.this.disco) {
1223 disco.put(jid, ServiceDiscoveryResult.empty());
1224 advancedStreamFeaturesLoaded = disco.containsKey(account.getDomain()) && disco.containsKey(account.getJid().asBareJid());
1225 }
1226 } else {
1227 advancedStreamFeaturesLoaded = false;
1228 }
1229 if (advancedStreamFeaturesLoaded) {
1230 enableAdvancedStreamFeatures();
1231 }
1232 }
1233 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1234 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1235 && mWaitForDisco.compareAndSet(true, false)) {
1236 finalizeBind();
1237 }
1238 }
1239 });
1240 }
1241
1242 private void discoverMamPreferences() {
1243 IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1244 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1245 sendIqPacket(request, (account, response) -> {
1246 if (response.getType() == IqPacket.TYPE.RESULT) {
1247 Element prefs = response.findChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1248 isMamPreferenceAlways = "always".equals(prefs == null ? null : prefs.getAttribute("default"));
1249 }
1250 });
1251 }
1252
1253 public boolean isMamPreferenceAlways() {
1254 return isMamPreferenceAlways;
1255 }
1256
1257 private void finalizeBind() {
1258 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
1259 if (bindListener != null) {
1260 bindListener.onBind(account);
1261 }
1262 changeStatus(Account.State.ONLINE);
1263 }
1264
1265 private void enableAdvancedStreamFeatures() {
1266 if (getFeatures().blocking() && !features.blockListRequested) {
1267 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
1268 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1269 }
1270 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1271 listener.onAdvancedStreamFeaturesAvailable(account);
1272 }
1273 if (getFeatures().carbons() && !features.carbonsEnabled) {
1274 sendEnableCarbons();
1275 }
1276 }
1277
1278 private void sendServiceDiscoveryItems(final Jid server) {
1279 mPendingServiceDiscoveries.incrementAndGet();
1280 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1281 iq.setTo(server.getDomain());
1282 iq.query("http://jabber.org/protocol/disco#items");
1283 this.sendIqPacket(iq, (account, packet) -> {
1284 if (packet.getType() == IqPacket.TYPE.RESULT) {
1285 HashSet<Jid> items = new HashSet<Jid>();
1286 final List<Element> elements = packet.query().getChildren();
1287 for (final Element element : elements) {
1288 if (element.getName().equals("item")) {
1289 final Jid jid = InvalidJid.getNullForInvalid(element.getAttributeAsJid("jid"));
1290 if (jid != null && !jid.equals(account.getDomain())) {
1291 items.add(jid);
1292 }
1293 }
1294 }
1295 for (Jid jid : items) {
1296 sendServiceDiscoveryInfo(jid);
1297 }
1298 } else {
1299 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco items of " + server);
1300 }
1301 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1302 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1303 && mWaitForDisco.compareAndSet(true, false)) {
1304 finalizeBind();
1305 }
1306 }
1307 });
1308 }
1309
1310 private void sendEnableCarbons() {
1311 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1312 iq.addChild("enable", "urn:xmpp:carbons:2");
1313 this.sendIqPacket(iq, new OnIqPacketReceived() {
1314
1315 @Override
1316 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1317 if (!packet.hasChild("error")) {
1318 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1319 + ": successfully enabled carbons");
1320 features.carbonsEnabled = true;
1321 } else {
1322 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1323 + ": error enableing carbons " + packet.toString());
1324 }
1325 }
1326 });
1327 }
1328
1329 private void processStreamError(final Tag currentTag) throws XmlPullParserException, IOException {
1330 final Element streamError = tagReader.readElement(currentTag);
1331 if (streamError == null) {
1332 return;
1333 }
1334 if (streamError.hasChild("conflict")) {
1335 account.setResource(createNewResource());
1336 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": switching resource due to conflict (" + account.getResource() + ")");
1337 throw new IOException();
1338 } else if (streamError.hasChild("host-unknown")) {
1339 throw new StateChangingException(Account.State.HOST_UNKNOWN);
1340 } else if (streamError.hasChild("policy-violation")) {
1341 this.lastConnect = SystemClock.elapsedRealtime();
1342 final String text = streamError.findChildContent("text");
1343 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": policy violation. " + text);
1344 failPendingMessages(text);
1345 throw new StateChangingException(Account.State.POLICY_VIOLATION);
1346 } else {
1347 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError.toString());
1348 throw new StateChangingException(Account.State.STREAM_ERROR);
1349 }
1350 }
1351
1352 private void failPendingMessages(final String error) {
1353 synchronized (this.mStanzaQueue) {
1354 for (int i = 0; i < mStanzaQueue.size(); ++i) {
1355 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
1356 if (stanza instanceof MessagePacket) {
1357 final MessagePacket packet = (MessagePacket) stanza;
1358 final String id = packet.getId();
1359 final Jid to = packet.getTo();
1360 mXmppConnectionService.markMessage(account,
1361 to.asBareJid(),
1362 id,
1363 Message.STATUS_SEND_FAILED,
1364 error);
1365 }
1366 }
1367 }
1368 }
1369
1370 private void sendStartStream() throws IOException {
1371 final Tag stream = Tag.start("stream:stream");
1372 stream.setAttribute("to", account.getServer());
1373 stream.setAttribute("version", "1.0");
1374 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
1375 stream.setAttribute("xmlns", "jabber:client");
1376 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1377 tagWriter.writeTag(stream);
1378 }
1379
1380 private String createNewResource() {
1381 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
1382 }
1383
1384 private String nextRandomId() {
1385 return nextRandomId(false);
1386 }
1387
1388 private String nextRandomId(boolean s) {
1389 return CryptoHelper.random(s ? 3 : 9, mXmppConnectionService.getRNG());
1390 }
1391
1392 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1393 packet.setFrom(account.getJid());
1394 return this.sendUnmodifiedIqPacket(packet, callback, false);
1395 }
1396
1397 public synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
1398 if (packet.getId() == null) {
1399 packet.setAttribute("id", nextRandomId());
1400 }
1401 if (callback != null) {
1402 synchronized (this.packetCallbacks) {
1403 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1404 }
1405 }
1406 this.sendPacket(packet, force);
1407 return packet.getId();
1408 }
1409
1410 public void sendMessagePacket(final MessagePacket packet) {
1411 this.sendPacket(packet);
1412 }
1413
1414 public void sendPresencePacket(final PresencePacket packet) {
1415 this.sendPacket(packet);
1416 }
1417
1418 private synchronized void sendPacket(final AbstractStanza packet) {
1419 sendPacket(packet, false);
1420 }
1421
1422 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
1423 if (stanzasSent == Integer.MAX_VALUE) {
1424 resetStreamId();
1425 disconnect(true);
1426 return;
1427 }
1428 synchronized (this.mStanzaQueue) {
1429 if (force || isBound) {
1430 tagWriter.writeStanzaAsync(packet);
1431 } else {
1432 Log.d(Config.LOGTAG, account.getJid().asBareJid() + " do not write stanza to unbound stream " + packet.toString());
1433 }
1434 if (packet instanceof AbstractAcknowledgeableStanza) {
1435 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1436
1437 if (this.mStanzaQueue.size() != 0) {
1438 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
1439 if (currentHighestKey != stanzasSent) {
1440 throw new AssertionError("Stanza count messed up");
1441 }
1442 }
1443
1444 ++stanzasSent;
1445 this.mStanzaQueue.append(stanzasSent, stanza);
1446 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
1447 if (Config.EXTENDED_SM_LOGGING) {
1448 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1449 }
1450 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1451 }
1452 }
1453 }
1454 }
1455
1456 public void sendPing() {
1457 if (!r()) {
1458 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1459 iq.setFrom(account.getJid());
1460 iq.addChild("ping", Namespace.PING);
1461 this.sendIqPacket(iq, null);
1462 }
1463 this.lastPingSent = SystemClock.elapsedRealtime();
1464 }
1465
1466 public void setOnMessagePacketReceivedListener(
1467 final OnMessagePacketReceived listener) {
1468 this.messageListener = listener;
1469 }
1470
1471 public void setOnUnregisteredIqPacketReceivedListener(
1472 final OnIqPacketReceived listener) {
1473 this.unregisteredIqListener = listener;
1474 }
1475
1476 public void setOnPresencePacketReceivedListener(
1477 final OnPresencePacketReceived listener) {
1478 this.presenceListener = listener;
1479 }
1480
1481 public void setOnJinglePacketReceivedListener(
1482 final OnJinglePacketReceived listener) {
1483 this.jingleListener = listener;
1484 }
1485
1486 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1487 this.statusListener = listener;
1488 }
1489
1490 public void setOnBindListener(final OnBindListener listener) {
1491 this.bindListener = listener;
1492 }
1493
1494 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1495 this.acknowledgedListener = listener;
1496 }
1497
1498 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1499 this.advancedStreamFeaturesLoadedListeners.add(listener);
1500 }
1501
1502 private void forceCloseSocket() {
1503 FileBackend.close(this.socket);
1504 FileBackend.close(this.tagReader);
1505 }
1506
1507 public void interrupt() {
1508 if (this.mThread != null) {
1509 this.mThread.interrupt();
1510 }
1511 }
1512
1513 public void disconnect(final boolean force) {
1514 interrupt();
1515 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
1516 if (force) {
1517 forceCloseSocket();
1518 } else {
1519 final TagWriter currentTagWriter = this.tagWriter;
1520 if (currentTagWriter.isActive()) {
1521 currentTagWriter.finish();
1522 final Socket currentSocket = this.socket;
1523 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
1524 try {
1525 currentTagWriter.await(1, TimeUnit.SECONDS);
1526 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
1527 currentTagWriter.writeTag(Tag.end("stream:stream"));
1528 if (streamCountDownLatch != null) {
1529 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
1530 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote ended stream");
1531 } else {
1532 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote has not closed socket. force closing");
1533 }
1534 }
1535 } catch (InterruptedException e) {
1536 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while gracefully closing stream");
1537 } catch (final IOException e) {
1538 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": io exception during disconnect (" + e.getMessage() + ")");
1539 } finally {
1540 FileBackend.close(currentSocket);
1541 }
1542 } else {
1543 forceCloseSocket();
1544 }
1545 }
1546 }
1547
1548 private void resetStreamId() {
1549 this.streamId = null;
1550 }
1551
1552 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
1553 synchronized (this.disco) {
1554 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
1555 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
1556 if (cursor.getValue().getFeatures().contains(feature)) {
1557 items.add(cursor);
1558 }
1559 }
1560 return items;
1561 }
1562 }
1563
1564 public Jid findDiscoItemByFeature(final String feature) {
1565 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
1566 if (items.size() >= 1) {
1567 return items.get(0).getKey();
1568 }
1569 return null;
1570 }
1571
1572 public boolean r() {
1573 if (getFeatures().sm()) {
1574 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1575 return true;
1576 } else {
1577 return false;
1578 }
1579 }
1580
1581 public List<String> getMucServersWithholdAccount() {
1582 List<String> servers = getMucServers();
1583 servers.remove(account.getDomain());
1584 return servers;
1585 }
1586
1587 public List<String> getMucServers() {
1588 List<String> servers = new ArrayList<>();
1589 synchronized (this.disco) {
1590 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
1591 final ServiceDiscoveryResult value = cursor.getValue();
1592 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
1593 && value.hasIdentity("conference", "text")
1594 && !value.getFeatures().contains("jabber:iq:gateway")
1595 && !value.hasIdentity("conference", "irc")) {
1596 servers.add(cursor.getKey().toString());
1597 }
1598 }
1599 }
1600 return servers;
1601 }
1602
1603 public String getMucServer() {
1604 List<String> servers = getMucServers();
1605 return servers.size() > 0 ? servers.get(0) : null;
1606 }
1607
1608 public int getTimeToNextAttempt() {
1609 final int additionalTime = account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
1610 final int interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
1611 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1612 return interval - secondsSinceLast;
1613 }
1614
1615 public int getAttempt() {
1616 return this.attempt;
1617 }
1618
1619 public Features getFeatures() {
1620 return this.features;
1621 }
1622
1623 public long getLastSessionEstablished() {
1624 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1625 return System.currentTimeMillis() - diff;
1626 }
1627
1628 public long getLastConnect() {
1629 return this.lastConnect;
1630 }
1631
1632 public long getLastPingSent() {
1633 return this.lastPingSent;
1634 }
1635
1636 public long getLastDiscoStarted() {
1637 return this.lastDiscoStarted;
1638 }
1639
1640 public long getLastPacketReceived() {
1641 return this.lastPacketReceived;
1642 }
1643
1644 public void sendActive() {
1645 this.sendPacket(new ActivePacket());
1646 }
1647
1648 public void sendInactive() {
1649 this.sendPacket(new InactivePacket());
1650 }
1651
1652 public void resetAttemptCount(boolean resetConnectTime) {
1653 this.attempt = 0;
1654 if (resetConnectTime) {
1655 this.lastConnect = 0;
1656 }
1657 }
1658
1659 public void setInteractive(boolean interactive) {
1660 this.mInteractive = interactive;
1661 }
1662
1663 public Identity getServerIdentity() {
1664 synchronized (this.disco) {
1665 ServiceDiscoveryResult result = disco.get(account.getJid().getDomain());
1666 if (result == null) {
1667 return Identity.UNKNOWN;
1668 }
1669 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
1670 if (id.getType().equals("im") && id.getCategory().equals("server") && id.getName() != null) {
1671 switch (id.getName()) {
1672 case "Prosody":
1673 return Identity.PROSODY;
1674 case "ejabberd":
1675 return Identity.EJABBERD;
1676 case "Slack-XMPP":
1677 return Identity.SLACK;
1678 }
1679 }
1680 }
1681 }
1682 return Identity.UNKNOWN;
1683 }
1684
1685 private IqGenerator getIqGenerator() {
1686 return mXmppConnectionService.getIqGenerator();
1687 }
1688
1689 public enum Identity {
1690 FACEBOOK,
1691 SLACK,
1692 EJABBERD,
1693 PROSODY,
1694 NIMBUZZ,
1695 UNKNOWN
1696 }
1697
1698 private static class TlsFactoryVerifier {
1699 private final SSLSocketFactory factory;
1700 private final DomainHostnameVerifier verifier;
1701
1702 TlsFactoryVerifier(final SSLSocketFactory factory, final DomainHostnameVerifier verifier) throws IOException {
1703 this.factory = factory;
1704 this.verifier = verifier;
1705 if (factory == null || verifier == null) {
1706 throw new IOException("could not setup ssl");
1707 }
1708 }
1709 }
1710
1711 private class MyKeyManager implements X509KeyManager {
1712 @Override
1713 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
1714 return account.getPrivateKeyAlias();
1715 }
1716
1717 @Override
1718 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
1719 return null;
1720 }
1721
1722 @Override
1723 public X509Certificate[] getCertificateChain(String alias) {
1724 Log.d(Config.LOGTAG, "getting certificate chain");
1725 try {
1726 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
1727 } catch (Exception e) {
1728 Log.d(Config.LOGTAG, e.getMessage());
1729 return new X509Certificate[0];
1730 }
1731 }
1732
1733 @Override
1734 public String[] getClientAliases(String s, Principal[] principals) {
1735 final String alias = account.getPrivateKeyAlias();
1736 return alias != null ? new String[]{alias} : new String[0];
1737 }
1738
1739 @Override
1740 public String[] getServerAliases(String s, Principal[] principals) {
1741 return new String[0];
1742 }
1743
1744 @Override
1745 public PrivateKey getPrivateKey(String alias) {
1746 try {
1747 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
1748 } catch (Exception e) {
1749 return null;
1750 }
1751 }
1752 }
1753
1754 private class StateChangingError extends Error {
1755 private final Account.State state;
1756
1757 public StateChangingError(Account.State state) {
1758 this.state = state;
1759 }
1760 }
1761
1762 private class StateChangingException extends IOException {
1763 private final Account.State state;
1764
1765 public StateChangingException(Account.State state) {
1766 this.state = state;
1767 }
1768 }
1769
1770 public class Features {
1771 XmppConnection connection;
1772 private boolean carbonsEnabled = false;
1773 private boolean encryptionEnabled = false;
1774 private boolean blockListRequested = false;
1775
1776 public Features(final XmppConnection connection) {
1777 this.connection = connection;
1778 }
1779
1780 private boolean hasDiscoFeature(final Jid server, final String feature) {
1781 synchronized (XmppConnection.this.disco) {
1782 return connection.disco.containsKey(server) &&
1783 connection.disco.get(server).getFeatures().contains(feature);
1784 }
1785 }
1786
1787 public boolean carbons() {
1788 return hasDiscoFeature(account.getDomain(), "urn:xmpp:carbons:2");
1789 }
1790
1791 public boolean bookmarksConversion() {
1792 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION) && pepPublishOptions();
1793 }
1794
1795 public boolean avatarConversion() {
1796 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.AVATAR_CONVERSION) && pepPublishOptions();
1797 }
1798
1799 public boolean blocking() {
1800 return hasDiscoFeature(account.getDomain(), Namespace.BLOCKING);
1801 }
1802
1803 public boolean spamReporting() {
1804 return hasDiscoFeature(account.getDomain(), "urn:xmpp:reporting:reason:spam:0");
1805 }
1806
1807 public boolean flexibleOfflineMessageRetrieval() {
1808 return hasDiscoFeature(account.getDomain(), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
1809 }
1810
1811 public boolean register() {
1812 return hasDiscoFeature(account.getDomain(), Namespace.REGISTER);
1813 }
1814
1815 public boolean invite() {
1816 return connection.streamFeatures != null && connection.streamFeatures.hasChild("register", Namespace.INVITE);
1817 }
1818
1819 public boolean sm() {
1820 return streamId != null
1821 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1822 }
1823
1824 public boolean csi() {
1825 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1826 }
1827
1828 public boolean pep() {
1829 synchronized (XmppConnection.this.disco) {
1830 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1831 return info != null && info.hasIdentity("pubsub", "pep");
1832 }
1833 }
1834
1835 public boolean pepPersistent() {
1836 synchronized (XmppConnection.this.disco) {
1837 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1838 return info != null && info.getFeatures().contains("http://jabber.org/protocol/pubsub#persistent-items");
1839 }
1840 }
1841
1842 public boolean pepPublishOptions() {
1843 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
1844 }
1845
1846 public boolean pepOmemoWhitelisted() {
1847 return hasDiscoFeature(account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
1848 }
1849
1850 public boolean mam() {
1851 return MessageArchiveService.Version.has(getAccountFeatures());
1852 }
1853
1854 public List<String> getAccountFeatures() {
1855 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
1856 return result == null ? Collections.emptyList() : result.getFeatures();
1857 }
1858
1859 public boolean push() {
1860 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
1861 || hasDiscoFeature(account.getDomain(), Namespace.PUSH);
1862 }
1863
1864 public boolean rosterVersioning() {
1865 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1866 }
1867
1868 public void setBlockListRequested(boolean value) {
1869 this.blockListRequested = value;
1870 }
1871
1872 public boolean p1S3FileTransfer() {
1873 return hasDiscoFeature(account.getDomain(), Namespace.P1_S3_FILE_TRANSFER);
1874 }
1875
1876 public boolean httpUpload(long filesize) {
1877 if (Config.DISABLE_HTTP_UPLOAD) {
1878 return false;
1879 } else {
1880 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1881 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1882 if (items.size() > 0) {
1883 try {
1884 long maxsize = Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1885 if (filesize <= maxsize) {
1886 return true;
1887 } else {
1888 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": http upload is not available for files with size " + filesize + " (max is " + maxsize + ")");
1889 return false;
1890 }
1891 } catch (Exception e) {
1892 return true;
1893 }
1894 }
1895 }
1896 return false;
1897 }
1898 }
1899
1900 public boolean useLegacyHttpUpload() {
1901 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
1902 }
1903
1904 public long getMaxHttpUploadSize() {
1905 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1906 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1907 if (items.size() > 0) {
1908 try {
1909 return Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1910 } catch (Exception e) {
1911 //ignored
1912 }
1913 }
1914 }
1915 return -1;
1916 }
1917
1918 public boolean stanzaIds() {
1919 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
1920 }
1921
1922 public boolean bookmarks2() {
1923 return Config.USE_BOOKMARKS2 /* || hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS2_COMPAT)*/;
1924 }
1925
1926 public boolean externalServiceDiscovery() {
1927 return hasDiscoFeature(account.getDomain(), Namespace.EXTERNAL_SERVICE_DISCOVERY);
1928 }
1929 }
1930}