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 com.google.common.base.Strings;
16
17import org.xmlpull.v1.XmlPullParserException;
18
19import java.io.ByteArrayInputStream;
20import java.io.IOException;
21import java.io.InputStream;
22import java.net.ConnectException;
23import java.net.IDN;
24import java.net.InetAddress;
25import java.net.InetSocketAddress;
26import java.net.Socket;
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.SSLPeerUnverifiedException;
52import javax.net.ssl.SSLSocket;
53import javax.net.ssl.SSLSocketFactory;
54import javax.net.ssl.X509KeyManager;
55import javax.net.ssl.X509TrustManager;
56
57import eu.siacs.conversations.Config;
58import eu.siacs.conversations.R;
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.http.HttpConnectionManager;
74import eu.siacs.conversations.persistance.FileBackend;
75import eu.siacs.conversations.services.MemorizingTrustManager;
76import eu.siacs.conversations.services.MessageArchiveService;
77import eu.siacs.conversations.services.NotificationService;
78import eu.siacs.conversations.services.XmppConnectionService;
79import eu.siacs.conversations.utils.CryptoHelper;
80import eu.siacs.conversations.utils.Patterns;
81import eu.siacs.conversations.utils.Resolver;
82import eu.siacs.conversations.utils.SSLSocketHelper;
83import eu.siacs.conversations.utils.SocksSocketFactory;
84import eu.siacs.conversations.utils.XmlHelper;
85import eu.siacs.conversations.xml.Element;
86import eu.siacs.conversations.xml.LocalizedContent;
87import eu.siacs.conversations.xml.Namespace;
88import eu.siacs.conversations.xml.Tag;
89import eu.siacs.conversations.xml.TagWriter;
90import eu.siacs.conversations.xml.XmlReader;
91import eu.siacs.conversations.xmpp.forms.Data;
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;
105import okhttp3.HttpUrl;
106
107public class XmppConnection implements Runnable {
108
109 private static final int PACKET_IQ = 0;
110 private static final int PACKET_MESSAGE = 1;
111 private static final int PACKET_PRESENCE = 2;
112 public final OnIqPacketReceived registrationResponseListener = (account, packet) -> {
113 if (packet.getType() == IqPacket.TYPE.RESULT) {
114 account.setOption(Account.OPTION_REGISTER, false);
115 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": successfully registered new account on server");
116 throw new StateChangingError(Account.State.REGISTRATION_SUCCESSFUL);
117 } else {
118 final List<String> PASSWORD_TOO_WEAK_MSGS = Arrays.asList(
119 "The password is too weak",
120 "Please use a longer password.");
121 Element error = packet.findChild("error");
122 Account.State state = Account.State.REGISTRATION_FAILED;
123 if (error != null) {
124 if (error.hasChild("conflict")) {
125 state = Account.State.REGISTRATION_CONFLICT;
126 } else if (error.hasChild("resource-constraint")
127 && "wait".equals(error.getAttribute("type"))) {
128 state = Account.State.REGISTRATION_PLEASE_WAIT;
129 } else if (error.hasChild("not-acceptable")
130 && PASSWORD_TOO_WEAK_MSGS.contains(error.findChildContent("text"))) {
131 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
132 }
133 }
134 throw new StateChangingError(state);
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 HashMap<String, Jid> commands = new HashMap<>();
141 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
142 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
143 private final Set<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new HashSet<>();
144 private final XmppConnectionService mXmppConnectionService;
145 private Socket socket;
146 private XmlReader tagReader;
147 private TagWriter tagWriter = new TagWriter();
148 private boolean shouldAuthenticate = true;
149 private boolean inSmacksSession = false;
150 private boolean isBound = false;
151 private Element streamFeatures;
152 private String streamId = null;
153 private int smVersion = 3;
154 private int stanzasReceived = 0;
155 private int stanzasSent = 0;
156 private long lastPacketReceived = 0;
157 private long lastPingSent = 0;
158 private long lastConnect = 0;
159 private long lastSessionStarted = 0;
160 private long lastDiscoStarted = 0;
161 private boolean isMamPreferenceAlways = false;
162 private final AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
163 private final AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
164 private final AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
165 private final AtomicInteger mSmCatchupMessageCounter = new AtomicInteger(0);
166 private boolean mInteractive = false;
167 private int attempt = 0;
168 private OnPresencePacketReceived presenceListener = null;
169 private OnJinglePacketReceived jingleListener = null;
170 private OnIqPacketReceived unregisteredIqListener = null;
171 private OnMessagePacketReceived messageListener = null;
172 private OnStatusChanged statusListener = null;
173 private OnBindListener bindListener = null;
174 private OnMessageAcknowledged acknowledgedListener = null;
175 private SaslMechanism saslMechanism;
176 private HttpUrl redirectionUrl = null;
177 private String verifiedHostname = null;
178 private volatile Thread mThread;
179 private CountDownLatch mStreamCountDownLatch;
180
181
182 public XmppConnection(final Account account, final XmppConnectionService service) {
183 this.account = account;
184 this.mXmppConnectionService = service;
185 }
186
187 private static void fixResource(Context context, Account account) {
188 String resource = account.getResource();
189 int fixedPartLength = context.getString(R.string.app_name).length() + 1; //include the trailing dot
190 int randomPartLength = 4; // 3 bytes
191 if (resource != null && resource.length() > fixedPartLength + randomPartLength) {
192 if (validBase64(resource.substring(fixedPartLength, fixedPartLength + randomPartLength))) {
193 account.setResource(resource.substring(0, fixedPartLength + randomPartLength));
194 }
195 }
196 }
197
198 private static boolean validBase64(String input) {
199 try {
200 return Base64.decode(input, Base64.URL_SAFE).length == 3;
201 } catch (Throwable throwable) {
202 return false;
203 }
204 }
205
206 private void changeStatus(final Account.State nextStatus) {
207 synchronized (this) {
208 if (Thread.currentThread().isInterrupted()) {
209 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not changing status to " + nextStatus + " because thread was interrupted");
210 return;
211 }
212 if (account.getStatus() != nextStatus) {
213 if ((nextStatus == Account.State.OFFLINE)
214 && (account.getStatus() != Account.State.CONNECTING)
215 && (account.getStatus() != Account.State.ONLINE)
216 && (account.getStatus() != Account.State.DISABLED)) {
217 return;
218 }
219 if (nextStatus == Account.State.ONLINE) {
220 this.attempt = 0;
221 }
222 account.setStatus(nextStatus);
223 } else {
224 return;
225 }
226 }
227 if (statusListener != null) {
228 statusListener.onStatusChanged(account);
229 }
230 }
231
232 public Jid getJidForCommand(final String node) {
233 synchronized (this.commands) {
234 return this.commands.get(node);
235 }
236 }
237
238 public void prepareNewConnection() {
239 this.lastConnect = SystemClock.elapsedRealtime();
240 this.lastPingSent = SystemClock.elapsedRealtime();
241 this.lastDiscoStarted = Long.MAX_VALUE;
242 this.mWaitingForSmCatchup.set(false);
243 this.changeStatus(Account.State.CONNECTING);
244 }
245
246 public boolean isWaitingForSmCatchup() {
247 return mWaitingForSmCatchup.get();
248 }
249
250 public void incrementSmCatchupMessageCounter() {
251 this.mSmCatchupMessageCounter.incrementAndGet();
252 }
253
254 protected void connect() {
255 if (mXmppConnectionService.areMessagesInitialized()) {
256 mXmppConnectionService.resetSendingToWaiting(account);
257 }
258 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
259 features.encryptionEnabled = false;
260 inSmacksSession = false;
261 isBound = false;
262 this.attempt++;
263 this.verifiedHostname = null; //will be set if user entered hostname is being used or hostname was verified with dnssec
264 try {
265 Socket localSocket;
266 shouldAuthenticate = !account.isOptionSet(Account.OPTION_REGISTER);
267 this.changeStatus(Account.State.CONNECTING);
268 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
269 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
270 if (useTor) {
271 String destination;
272 if (account.getHostname().isEmpty() || account.isOnion()) {
273 destination = account.getServer();
274 } else {
275 destination = account.getHostname();
276 this.verifiedHostname = destination;
277 }
278
279 final int port = account.getPort();
280 final boolean directTls = Resolver.useDirectTls(port);
281
282 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": connect to " + destination + " via Tor. directTls=" + directTls);
283 localSocket = SocksSocketFactory.createSocketOverTor(destination, port);
284
285 if (directTls) {
286 localSocket = upgradeSocketToTls(localSocket);
287 features.encryptionEnabled = true;
288 }
289
290 try {
291 startXmpp(localSocket);
292 } catch (InterruptedException e) {
293 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
294 return;
295 } catch (Exception e) {
296 throw new IOException(e.getMessage());
297 }
298 } else {
299 final String domain = account.getServer();
300 final List<Resolver.Result> results;
301 final boolean hardcoded = extended && !account.getHostname().isEmpty();
302 if (hardcoded) {
303 results = Resolver.fromHardCoded(account.getHostname(), account.getPort());
304 } else {
305 results = Resolver.resolve(domain);
306 }
307 if (Thread.currentThread().isInterrupted()) {
308 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
309 return;
310 }
311 if (results.size() == 0) {
312 Log.e(Config.LOGTAG, account.getJid().asBareJid() + ": Resolver results were empty");
313 return;
314 }
315 final Resolver.Result storedBackupResult;
316 if (hardcoded) {
317 storedBackupResult = null;
318 } else {
319 storedBackupResult = mXmppConnectionService.databaseBackend.findResolverResult(domain);
320 if (storedBackupResult != null && !results.contains(storedBackupResult)) {
321 results.add(storedBackupResult);
322 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": loaded backup resolver result from db: " + storedBackupResult);
323 }
324 }
325 for (Iterator<Resolver.Result> iterator = results.iterator(); iterator.hasNext(); ) {
326 final Resolver.Result result = iterator.next();
327 if (Thread.currentThread().isInterrupted()) {
328 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
329 return;
330 }
331 try {
332 // if tls is true, encryption is implied and must not be started
333 features.encryptionEnabled = result.isDirectTls();
334 verifiedHostname = result.isAuthenticated() ? result.getHostname().toString() : null;
335 Log.d(Config.LOGTAG, "verified hostname " + verifiedHostname);
336 final InetSocketAddress addr;
337 if (result.getIp() != null) {
338 addr = new InetSocketAddress(result.getIp(), result.getPort());
339 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
340 + ": using values from resolver " + (result.getHostname() == null ? "" : result.getHostname().toString()
341 + "/") + result.getIp().getHostAddress() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
342 } else {
343 addr = new InetSocketAddress(IDN.toASCII(result.getHostname().toString()), result.getPort());
344 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
345 + ": using values from resolver "
346 + result.getHostname().toString() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
347 }
348
349 localSocket = new Socket();
350 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
351
352 if (features.encryptionEnabled) {
353 localSocket = upgradeSocketToTls(localSocket);
354 }
355
356 localSocket.setSoTimeout(Config.SOCKET_TIMEOUT * 1000);
357 if (startXmpp(localSocket)) {
358 localSocket.setSoTimeout(0); //reset to 0; once the connection is established we don’t want this
359 if (!hardcoded && !result.equals(storedBackupResult)) {
360 mXmppConnectionService.databaseBackend.saveResolverResult(domain, result);
361 }
362 break; // successfully connected to server that speaks xmpp
363 } else {
364 FileBackend.close(localSocket);
365 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
366 }
367 } catch (final StateChangingException e) {
368 if (!iterator.hasNext()) {
369 throw e;
370 }
371 } catch (InterruptedException e) {
372 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
373 return;
374 } catch (final Throwable e) {
375 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage() + "(" + e.getClass().getName() + ")");
376 if (!iterator.hasNext()) {
377 throw new UnknownHostException();
378 }
379 }
380 }
381 }
382 processStream();
383 } catch (final SecurityException e) {
384 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
385 } catch (final StateChangingException e) {
386 this.changeStatus(e.state);
387 } catch (final UnknownHostException | ConnectException | SocksSocketFactory.HostNotFoundException e) {
388 this.changeStatus(Account.State.SERVER_NOT_FOUND);
389 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
390 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
391 } catch (final IOException | XmlPullParserException e) {
392 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
393 this.changeStatus(Account.State.OFFLINE);
394 this.attempt = Math.max(0, this.attempt - 1);
395 } finally {
396 if (!Thread.currentThread().isInterrupted()) {
397 forceCloseSocket();
398 } else {
399 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not force closing socket because thread was interrupted");
400 }
401 }
402 }
403
404 /**
405 * Starts xmpp protocol, call after connecting to socket
406 *
407 * @return true if server returns with valid xmpp, false otherwise
408 */
409 private boolean startXmpp(Socket socket) throws Exception {
410 if (Thread.currentThread().isInterrupted()) {
411 throw new InterruptedException();
412 }
413 this.socket = socket;
414 tagReader = new XmlReader();
415 if (tagWriter != null) {
416 tagWriter.forceClose();
417 }
418 tagWriter = new TagWriter();
419 tagWriter.setOutputStream(socket.getOutputStream());
420 tagReader.setInputStream(socket.getInputStream());
421 tagWriter.beginDocument();
422 sendStartStream();
423 final Tag tag = tagReader.readTag();
424 if (Thread.currentThread().isInterrupted()) {
425 throw new InterruptedException();
426 }
427 if (socket instanceof SSLSocket) {
428 SSLSocketHelper.log(account, (SSLSocket) socket);
429 }
430 return tag != null && tag.isStart("stream");
431 }
432
433 private SSLSocketFactory getSSLSocketFactory() throws NoSuchAlgorithmException, KeyManagementException {
434 final SSLContext sc = SSLSocketHelper.getSSLContext();
435 final MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
436 final KeyManager[] keyManager;
437 if (account.getPrivateKeyAlias() != null) {
438 keyManager = new KeyManager[]{new MyKeyManager()};
439 } else {
440 keyManager = null;
441 }
442 final String domain = account.getServer();
443 sc.init(keyManager, new X509TrustManager[]{mInteractive ? trustManager.getInteractive(domain) : trustManager.getNonInteractive(domain)}, mXmppConnectionService.getRNG());
444 return sc.getSocketFactory();
445 }
446
447 @Override
448 public void run() {
449 synchronized (this) {
450 this.mThread = Thread.currentThread();
451 if (this.mThread.isInterrupted()) {
452 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": aborting connect because thread was interrupted");
453 return;
454 }
455 forceCloseSocket();
456 }
457 connect();
458 }
459
460 private void processStream() throws XmlPullParserException, IOException {
461 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
462 this.mStreamCountDownLatch = streamCountDownLatch;
463 Tag nextTag = tagReader.readTag();
464 while (nextTag != null && !nextTag.isEnd("stream")) {
465 if (nextTag.isStart("error")) {
466 processStreamError(nextTag);
467 } else if (nextTag.isStart("features")) {
468 processStreamFeatures(nextTag);
469 } else if (nextTag.isStart("proceed", Namespace.TLS)) {
470 switchOverToTls();
471 } else if (nextTag.isStart("success")) {
472 final Element success = tagReader.readElement(nextTag);
473 final SaslMechanism.Version version;
474 try {
475 version = SaslMechanism.Version.of(success);
476 } catch (final IllegalArgumentException e) {
477 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
478 }
479 final String challenge;
480 if (version == SaslMechanism.Version.SASL) {
481 challenge = success.getContent();
482 } else if (version == SaslMechanism.Version.SASL_2) {
483 challenge = success.findChildContent("additional-data");
484 } else {
485 throw new AssertionError("Missing implementation for " + version);
486 }
487 try {
488 saslMechanism.getResponse(challenge);
489 } catch (final SaslMechanism.AuthenticationException e) {
490 Log.e(Config.LOGTAG, String.valueOf(e));
491 throw new StateChangingException(Account.State.UNAUTHORIZED);
492 }
493 Log.d(
494 Config.LOGTAG,
495 account.getJid().asBareJid().toString()
496 + ": logged in (using "
497 + version
498 + ")");
499 account.setKey(
500 Account.PINNED_MECHANISM_KEY, String.valueOf(saslMechanism.getPriority()));
501 if (version == SaslMechanism.Version.SASL_2) {
502 final String authorizationIdentifier =
503 success.findChildContent("authorization-identifier");
504 Log.d(
505 Config.LOGTAG,
506 account.getJid().asBareJid()
507 + ": SASL 2.0 authorization identifier was "
508 + authorizationIdentifier);
509 final Element resumed = success.findChild("resumed", "urn:xmpp:sm:3");
510 final Element failed = success.findChild("failed", "urn:xmpp:sm:3");
511 if (resumed != null && streamId != null) {
512 processResumed(resumed);
513 } else if (failed != null) {
514 processFailed(failed, false); // wait for new stream features
515 }
516 }
517 if (version == SaslMechanism.Version.SASL) {
518 tagReader.reset();
519 sendStartStream();
520 final Tag tag = tagReader.readTag();
521 if (tag != null && tag.isStart("stream")) {
522 processStream();
523 } else {
524 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
525 }
526 break;
527 }
528 } else if (nextTag.isStart("failure", Namespace.TLS)) {
529 throw new StateChangingException(Account.State.TLS_ERROR);
530 } else if (nextTag.isStart("failure")) {
531 final Element failure = tagReader.readElement(nextTag);
532 final SaslMechanism.Version version;
533 try {
534 version = SaslMechanism.Version.of(failure);
535 } catch (final IllegalArgumentException e) {
536 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
537 }
538 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": login failure " + version);
539 if (failure.hasChild("temporary-auth-failure")) {
540 throw new StateChangingException(Account.State.TEMPORARY_AUTH_FAILURE);
541 } else if (failure.hasChild("account-disabled")) {
542 final String text = failure.findChildContent("text");
543 if (Strings.isNullOrEmpty(text)) {
544 throw new StateChangingException(Account.State.UNAUTHORIZED);
545 }
546 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
547 if (matcher.find()) {
548 final HttpUrl url;
549 try {
550 url = HttpUrl.get(text.substring(matcher.start(), matcher.end()));
551 } catch (final IllegalArgumentException e) {
552 throw new StateChangingException(Account.State.UNAUTHORIZED);
553 }
554 if (url.isHttps()) {
555 this.redirectionUrl = url;
556 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
557 }
558 }
559 }
560 throw new StateChangingException(Account.State.UNAUTHORIZED);
561 } else if (nextTag.isStart("continue", Namespace.SASL_2)) {
562 throw new StateChangingException(Account.State.INCOMPATIBLE_CLIENT);
563 } else if (nextTag.isStart("challenge")) {
564 final Element challenge = tagReader.readElement(nextTag);
565 final SaslMechanism.Version version;
566 try {
567 version = SaslMechanism.Version.of(challenge);
568 } catch (final IllegalArgumentException e) {
569 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
570 }
571 final Element response;
572 if (version == SaslMechanism.Version.SASL) {
573 response = new Element("response", Namespace.SASL);
574 } else if (version == SaslMechanism.Version.SASL_2) {
575 response = new Element("response", Namespace.SASL_2);
576 } else {
577 throw new AssertionError("Missing implementation for " + version);
578 }
579 try {
580 response.setContent(saslMechanism.getResponse(challenge.getContent()));
581 } catch (final SaslMechanism.AuthenticationException e) {
582 // TODO: Send auth abort tag.
583 Log.e(Config.LOGTAG, e.toString());
584 throw new StateChangingException(Account.State.UNAUTHORIZED);
585 }
586 tagWriter.writeElement(response);
587 } else if (nextTag.isStart("enabled")) {
588 final Element enabled = tagReader.readElement(nextTag);
589 if (enabled.getAttributeAsBoolean("resume")) {
590 this.streamId = enabled.getAttribute("id");
591 Log.d(
592 Config.LOGTAG,
593 account.getJid().asBareJid().toString()
594 + ": stream management("
595 + smVersion
596 + ") enabled (resumable)");
597 } else {
598 Log.d(
599 Config.LOGTAG,
600 account.getJid().asBareJid().toString()
601 + ": stream management("
602 + smVersion
603 + ") enabled");
604 }
605 this.stanzasReceived = 0;
606 this.inSmacksSession = true;
607 final RequestPacket r = new RequestPacket(smVersion);
608 tagWriter.writeStanzaAsync(r);
609 } else if (nextTag.isStart("resumed")) {
610 final Element resumed = tagReader.readElement(nextTag);
611 processResumed(resumed);
612 } else if (nextTag.isStart("r")) {
613 tagReader.readElement(nextTag);
614 if (Config.EXTENDED_SM_LOGGING) {
615 Log.d(
616 Config.LOGTAG,
617 account.getJid().asBareJid()
618 + ": acknowledging stanza #"
619 + this.stanzasReceived);
620 }
621 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
622 tagWriter.writeStanzaAsync(ack);
623 } else if (nextTag.isStart("a")) {
624 boolean accountUiNeedsRefresh = false;
625 synchronized (NotificationService.CATCHUP_LOCK) {
626 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
627 final int messageCount = mSmCatchupMessageCounter.get();
628 final int pendingIQs = packetCallbacks.size();
629 Log.d(
630 Config.LOGTAG,
631 account.getJid().asBareJid()
632 + ": SM catchup complete (messages="
633 + messageCount
634 + ", pending IQs="
635 + pendingIQs
636 + ")");
637 accountUiNeedsRefresh = true;
638 if (messageCount > 0) {
639 mXmppConnectionService
640 .getNotificationService()
641 .finishBacklog(true, account);
642 }
643 }
644 }
645 if (accountUiNeedsRefresh) {
646 mXmppConnectionService.updateAccountUi();
647 }
648 final Element ack = tagReader.readElement(nextTag);
649 lastPacketReceived = SystemClock.elapsedRealtime();
650 try {
651 final boolean acknowledgedMessages;
652 synchronized (this.mStanzaQueue) {
653 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
654 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence);
655 }
656 if (acknowledgedMessages) {
657 mXmppConnectionService.updateConversationUi();
658 }
659 } catch (NumberFormatException | NullPointerException e) {
660 Log.d(
661 Config.LOGTAG,
662 account.getJid().asBareJid()
663 + ": server send ack without sequence number");
664 }
665 } else if (nextTag.isStart("failed")) {
666 final Element failed = tagReader.readElement(nextTag);
667 processFailed(failed, true);
668 } else if (nextTag.isStart("iq")) {
669 processIq(nextTag);
670 } else if (nextTag.isStart("message")) {
671 processMessage(nextTag);
672 } else if (nextTag.isStart("presence")) {
673 processPresence(nextTag);
674 }
675 nextTag = tagReader.readTag();
676 }
677 if (nextTag != null && nextTag.isEnd("stream")) {
678 streamCountDownLatch.countDown();
679 }
680 }
681
682 private void processResumed(final Element resumed) throws StateChangingException {
683 this.inSmacksSession = true;
684 this.isBound = true;
685 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
686 lastPacketReceived = SystemClock.elapsedRealtime();
687 final String h = resumed.getAttribute("h");
688 if (h == null) {
689 resetStreamId();
690 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
691 }
692 final int serverCount;
693 try {
694 serverCount = Integer.parseInt(h);
695 } catch (final NumberFormatException e) {
696 resetStreamId();
697 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
698 }
699 final ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
700 final boolean acknowledgedMessages;
701 synchronized (this.mStanzaQueue) {
702 if (serverCount < stanzasSent) {
703 Log.d(
704 Config.LOGTAG,
705 account.getJid().asBareJid() + ": session resumed with lost packages");
706 stanzasSent = serverCount;
707 } else {
708 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": session resumed");
709 }
710 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
711 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
712 failedStanzas.add(mStanzaQueue.valueAt(i));
713 }
714 mStanzaQueue.clear();
715 }
716 if (acknowledgedMessages) {
717 mXmppConnectionService.updateConversationUi();
718 }
719 Log.d(
720 Config.LOGTAG,
721 account.getJid().asBareJid() + ": resending " + failedStanzas.size() + " stanzas");
722 for (final AbstractAcknowledgeableStanza packet : failedStanzas) {
723 if (packet instanceof MessagePacket) {
724 MessagePacket message = (MessagePacket) packet;
725 mXmppConnectionService.markMessage(
726 account,
727 message.getTo().asBareJid(),
728 message.getId(),
729 Message.STATUS_UNSEND);
730 }
731 sendPacket(packet);
732 }
733 Log.d(
734 Config.LOGTAG,
735 account.getJid().asBareJid() + ": online with resource " + account.getResource());
736 changeStatus(Account.State.ONLINE);
737 }
738
739 private void processFailed(final Element failed, final boolean sendBindRequest) {
740 final int serverCount;
741 try {
742 serverCount = Integer.parseInt(failed.getAttribute("h"));
743 } catch (final NumberFormatException | NullPointerException e) {
744 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
745 resetStreamId();
746 if (sendBindRequest) {
747 sendBindRequest();
748 }
749 return;
750 }
751 Log.d(
752 Config.LOGTAG,
753 account.getJid().asBareJid()
754 + ": resumption failed but server acknowledged stanza #"
755 + serverCount);
756 final boolean acknowledgedMessages;
757 synchronized (this.mStanzaQueue) {
758 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
759 }
760 if (acknowledgedMessages) {
761 mXmppConnectionService.updateConversationUi();
762 }
763 resetStreamId();
764 if (sendBindRequest) {
765 sendBindRequest();
766 }
767 }
768
769 private boolean acknowledgeStanzaUpTo(int serverCount) {
770 if (serverCount > stanzasSent) {
771 Log.e(Config.LOGTAG, "server acknowledged more stanzas than we sent. serverCount=" + serverCount + ", ourCount=" + stanzasSent);
772 }
773 boolean acknowledgedMessages = false;
774 for (int i = 0; i < mStanzaQueue.size(); ++i) {
775 if (serverCount >= mStanzaQueue.keyAt(i)) {
776 if (Config.EXTENDED_SM_LOGGING) {
777 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
778 }
779 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
780 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
781 final MessagePacket packet = (MessagePacket) stanza;
782 final String id = packet.getId();
783 final Jid to = packet.getTo();
784 if (id != null && to != null) {
785 acknowledgedMessages |= acknowledgedListener.onMessageAcknowledged(account, to, id);
786 }
787 }
788 mStanzaQueue.removeAt(i);
789 i--;
790 }
791 }
792 return acknowledgedMessages;
793 }
794
795 private @NonNull
796 Element processPacket(final Tag currentTag, final int packetType) throws IOException {
797 final Element element;
798 switch (packetType) {
799 case PACKET_IQ:
800 element = new IqPacket();
801 break;
802 case PACKET_MESSAGE:
803 element = new MessagePacket();
804 break;
805 case PACKET_PRESENCE:
806 element = new PresencePacket();
807 break;
808 default:
809 throw new AssertionError("Should never encounter invalid type");
810 }
811 element.setAttributes(currentTag.getAttributes());
812 Tag nextTag = tagReader.readTag();
813 if (nextTag == null) {
814 throw new IOException("interrupted mid tag");
815 }
816 while (!nextTag.isEnd(element.getName())) {
817 if (!nextTag.isNo()) {
818 element.addChild(tagReader.readElement(nextTag));
819 }
820 nextTag = tagReader.readTag();
821 if (nextTag == null) {
822 throw new IOException("interrupted mid tag");
823 }
824 }
825 if (stanzasReceived == Integer.MAX_VALUE) {
826 resetStreamId();
827 throw new IOException("time to restart the session. cant handle >2 billion pcks");
828 }
829 if (inSmacksSession) {
830 ++stanzasReceived;
831 } else if (features.sm()) {
832 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not counting stanza(" + element.getClass().getSimpleName() + "). Not in smacks session.");
833 }
834 lastPacketReceived = SystemClock.elapsedRealtime();
835 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
836 Log.d(Config.LOGTAG, "[background stanza] " + element);
837 }
838 if (element instanceof IqPacket
839 && (((IqPacket) element).getType() == IqPacket.TYPE.SET)
840 && element.hasChild("jingle", Namespace.JINGLE)) {
841 return JinglePacket.upgrade((IqPacket) element);
842 } else {
843 return element;
844 }
845 }
846
847 private void processIq(final Tag currentTag) throws IOException {
848 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
849 if (!packet.valid()) {
850 Log.e(Config.LOGTAG, "encountered invalid iq from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
851 return;
852 }
853 if (packet instanceof JinglePacket) {
854 if (this.jingleListener != null) {
855 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
856 }
857 } else {
858 OnIqPacketReceived callback = null;
859 synchronized (this.packetCallbacks) {
860 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
861 if (packetCallbackDuple != null) {
862 // Packets to the server should have responses from the server
863 if (packetCallbackDuple.first.toServer(account)) {
864 if (packet.fromServer(account)) {
865 callback = packetCallbackDuple.second;
866 packetCallbacks.remove(packet.getId());
867 } else {
868 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
869 }
870 } else {
871 if (packet.getFrom() != null && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
872 callback = packetCallbackDuple.second;
873 packetCallbacks.remove(packet.getId());
874 } else {
875 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
876 }
877 }
878 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
879 callback = this.unregisteredIqListener;
880 }
881 }
882 if (callback != null) {
883 try {
884 callback.onIqPacketReceived(account, packet);
885 } catch (StateChangingError error) {
886 throw new StateChangingException(error.state);
887 }
888 }
889 }
890 }
891
892 private void processMessage(final Tag currentTag) throws IOException {
893 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
894 if (!packet.valid()) {
895 Log.e(Config.LOGTAG, "encountered invalid message from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
896 return;
897 }
898 this.messageListener.onMessagePacketReceived(account, packet);
899 }
900
901 private void processPresence(final Tag currentTag) throws IOException {
902 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
903 if (!packet.valid()) {
904 Log.e(Config.LOGTAG, "encountered invalid presence from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
905 return;
906 }
907 this.presenceListener.onPresencePacketReceived(account, packet);
908 }
909
910 private void sendStartTLS() throws IOException {
911 final Tag startTLS = Tag.empty("starttls");
912 startTLS.setAttribute("xmlns", Namespace.TLS);
913 tagWriter.writeTag(startTLS);
914 }
915
916 private void switchOverToTls() throws XmlPullParserException, IOException {
917 tagReader.readTag();
918 final Socket socket = this.socket;
919 final SSLSocket sslSocket = upgradeSocketToTls(socket);
920 tagReader.setInputStream(sslSocket.getInputStream());
921 tagWriter.setOutputStream(sslSocket.getOutputStream());
922 sendStartStream();
923 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
924 features.encryptionEnabled = true;
925 final Tag tag = tagReader.readTag();
926 if (tag != null && tag.isStart("stream")) {
927 SSLSocketHelper.log(account, sslSocket);
928 processStream();
929 } else {
930 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
931 }
932 sslSocket.close();
933 }
934
935 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
936 final SSLSocketFactory sslSocketFactory;
937 try {
938 sslSocketFactory = getSSLSocketFactory();
939 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
940 throw new StateChangingException(Account.State.TLS_ERROR);
941 }
942 final InetAddress address = socket.getInetAddress();
943 final SSLSocket sslSocket = (SSLSocket) sslSocketFactory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
944 SSLSocketHelper.setSecurity(sslSocket);
945 SSLSocketHelper.setHostname(sslSocket, IDN.toASCII(account.getServer()));
946 SSLSocketHelper.setApplicationProtocol(sslSocket, "xmpp-client");
947 final XmppDomainVerifier xmppDomainVerifier = new XmppDomainVerifier();
948 try {
949 if (!xmppDomainVerifier.verify(account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
950 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate domain verification failed");
951 FileBackend.close(sslSocket);
952 throw new StateChangingException(Account.State.TLS_ERROR_DOMAIN);
953 }
954 } catch (final SSLPeerUnverifiedException e) {
955 FileBackend.close(sslSocket);
956 throw new StateChangingException(Account.State.TLS_ERROR);
957 }
958 return sslSocket;
959 }
960
961 private void processStreamFeatures(final Tag currentTag) throws IOException {
962 this.streamFeatures = tagReader.readElement(currentTag);
963 final boolean isSecure =
964 features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
965 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
966 if (this.streamFeatures.hasChild("starttls", Namespace.TLS)
967 && !features.encryptionEnabled) {
968 sendStartTLS();
969 } else if (this.streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
970 && account.isOptionSet(Account.OPTION_REGISTER)) {
971 if (isSecure) {
972 register();
973 } else {
974 Log.d(
975 Config.LOGTAG,
976 account.getJid().asBareJid()
977 + ": unable to find STARTTLS for registration process "
978 + XmlHelper.printElementNames(this.streamFeatures));
979 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
980 }
981 } else if (!this.streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
982 && account.isOptionSet(Account.OPTION_REGISTER)) {
983 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
984 } else if (this.streamFeatures.hasChild("mechanisms", Namespace.SASL_2)
985 && shouldAuthenticate
986 && isSecure) {
987 authenticate(SaslMechanism.Version.SASL_2);
988 } else if (this.streamFeatures.hasChild("mechanisms", Namespace.SASL)
989 && shouldAuthenticate
990 && isSecure) {
991 authenticate(SaslMechanism.Version.SASL);
992 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion)
993 && streamId != null) {
994 if (Config.EXTENDED_SM_LOGGING) {
995 Log.d(
996 Config.LOGTAG,
997 account.getJid().asBareJid()
998 + ": resuming after stanza #"
999 + stanzasReceived);
1000 }
1001 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
1002 this.mSmCatchupMessageCounter.set(0);
1003 this.mWaitingForSmCatchup.set(true);
1004 this.tagWriter.writeStanzaAsync(resume);
1005 } else if (needsBinding) {
1006 if (this.streamFeatures.hasChild("bind", Namespace.BIND) && isSecure) {
1007 sendBindRequest();
1008 } else {
1009 Log.d(
1010 Config.LOGTAG,
1011 account.getJid().asBareJid()
1012 + ": unable to find bind feature "
1013 + XmlHelper.printElementNames(this.streamFeatures));
1014 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1015 }
1016 } else {
1017 Log.d(
1018 Config.LOGTAG,
1019 account.getJid().asBareJid()
1020 + ": received NOP stream features "
1021 + this.streamFeatures);
1022 }
1023 }
1024
1025 private void authenticate(final SaslMechanism.Version version) throws IOException {
1026 final List<String> mechanisms = extractMechanisms(streamFeatures.findChild("mechanisms"));
1027 if (mechanisms.contains(External.MECHANISM) && account.getPrivateKeyAlias() != null) {
1028 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
1029 } else if (mechanisms.contains(ScramSha512.MECHANISM)) {
1030 saslMechanism = new ScramSha512(tagWriter, account, mXmppConnectionService.getRNG());
1031 } else if (mechanisms.contains(ScramSha256.MECHANISM)) {
1032 saslMechanism = new ScramSha256(tagWriter, account, mXmppConnectionService.getRNG());
1033 } else if (mechanisms.contains(ScramSha1.MECHANISM)) {
1034 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
1035 } else if (mechanisms.contains(Plain.MECHANISM) && !account.getJid().getDomain().toEscapedString().equals("nimbuzz.com")) {
1036 saslMechanism = new Plain(tagWriter, account);
1037 } else if (mechanisms.contains(DigestMd5.MECHANISM)) {
1038 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
1039 } else if (mechanisms.contains(Anonymous.MECHANISM)) {
1040 saslMechanism = new Anonymous(tagWriter, account, mXmppConnectionService.getRNG());
1041 }
1042 if (saslMechanism == null) {
1043 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": unable to find supported SASL mechanism in " + mechanisms);
1044 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
1045 }
1046 final int pinnedMechanism = account.getKeyAsInt(Account.PINNED_MECHANISM_KEY, -1);
1047 if (pinnedMechanism > saslMechanism.getPriority()) {
1048 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
1049 " has lower priority (" + saslMechanism.getPriority() +
1050 ") than pinned priority (" + pinnedMechanism +
1051 "). Possible downgrade attack?");
1052 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
1053 }
1054 final String firstMessage = saslMechanism.getClientFirstMessage();
1055 final Element authenticate;
1056 if (version == SaslMechanism.Version.SASL) {
1057 authenticate = new Element("auth", Namespace.SASL);
1058 if (!Strings.isNullOrEmpty(firstMessage)) {
1059 authenticate.setContent(firstMessage);
1060 }
1061 } else if (version == SaslMechanism.Version.SASL_2) {
1062 authenticate = new Element("authenticate", Namespace.SASL_2);
1063 if (!Strings.isNullOrEmpty(firstMessage)) {
1064 authenticate.addChild("initial-response").setContent(firstMessage);
1065 }
1066 final Element inline = this.streamFeatures.findChild("inline", Namespace.SASL_2);
1067 final boolean inlineStreamManagement = inline != null && inline.hasChild("sm", "urn:xmpp:sm:3");
1068 if (inlineStreamManagement && streamId != null) {
1069 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
1070 this.mSmCatchupMessageCounter.set(0);
1071 this.mWaitingForSmCatchup.set(true);
1072 authenticate.addChild(resume);
1073 }
1074 } else {
1075 throw new AssertionError("Missing implementation for " + version);
1076 }
1077
1078 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with "+version+ "/" + saslMechanism.getMechanism());
1079 authenticate.setAttribute("mechanism", saslMechanism.getMechanism());
1080 tagWriter.writeElement(authenticate);
1081 }
1082
1083 private List<String> extractMechanisms(final Element stream) {
1084 final ArrayList<String> mechanisms = new ArrayList<>(stream
1085 .getChildren().size());
1086 for (final Element child : stream.getChildren()) {
1087 mechanisms.add(child.getContent());
1088 }
1089 return mechanisms;
1090 }
1091
1092
1093 private void register() {
1094 final String preAuth = account.getKey(Account.PRE_AUTH_REGISTRATION_TOKEN);
1095 if (preAuth != null && features.invite()) {
1096 final IqPacket preAuthRequest = new IqPacket(IqPacket.TYPE.SET);
1097 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
1098 sendUnmodifiedIqPacket(preAuthRequest, (account, response) -> {
1099 if (response.getType() == IqPacket.TYPE.RESULT) {
1100 sendRegistryRequest();
1101 } else {
1102 final String error = response.getErrorCondition();
1103 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": failed to pre auth. " + error);
1104 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
1105 }
1106 }, true);
1107 } else {
1108 sendRegistryRequest();
1109 }
1110 }
1111
1112 private void sendRegistryRequest() {
1113 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
1114 register.query(Namespace.REGISTER);
1115 register.setTo(account.getDomain());
1116 sendUnmodifiedIqPacket(register, (account, packet) -> {
1117 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1118 return;
1119 }
1120 if (packet.getType() == IqPacket.TYPE.ERROR) {
1121 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1122 }
1123 final Element query = packet.query(Namespace.REGISTER);
1124 if (query.hasChild("username") && (query.hasChild("password"))) {
1125 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
1126 final Element username = new Element("username").setContent(account.getUsername());
1127 final Element password = new Element("password").setContent(account.getPassword());
1128 register1.query(Namespace.REGISTER).addChild(username);
1129 register1.query().addChild(password);
1130 register1.setFrom(account.getJid().asBareJid());
1131 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
1132 } else if (query.hasChild("x", Namespace.DATA)) {
1133 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
1134 final Element blob = query.findChild("data", "urn:xmpp:bob");
1135 final String id = packet.getId();
1136 InputStream is;
1137 if (blob != null) {
1138 try {
1139 final String base64Blob = blob.getContent();
1140 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
1141 is = new ByteArrayInputStream(strBlob);
1142 } catch (Exception e) {
1143 is = null;
1144 }
1145 } else {
1146 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
1147 try {
1148 final String url = data.getValue("url");
1149 final String fallbackUrl = data.getValue("captcha-fallback-url");
1150 if (url != null) {
1151 is = HttpConnectionManager.open(url, useTor);
1152 } else if (fallbackUrl != null) {
1153 is = HttpConnectionManager.open(fallbackUrl, useTor);
1154 } else {
1155 is = null;
1156 }
1157 } catch (final IOException e) {
1158 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to fetch captcha", e);
1159 is = null;
1160 }
1161 }
1162
1163 if (is != null) {
1164 Bitmap captcha = BitmapFactory.decodeStream(is);
1165 try {
1166 if (mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha)) {
1167 return;
1168 }
1169 } catch (Exception e) {
1170 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1171 }
1172 }
1173 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1174 } else if (query.hasChild("instructions") || query.hasChild("x", Namespace.OOB)) {
1175 final String instructions = query.findChildContent("instructions");
1176 final Element oob = query.findChild("x", Namespace.OOB);
1177 final String url = oob == null ? null : oob.findChildContent("url");
1178 if (url != null) {
1179 setAccountCreationFailed(url);
1180 } else if (instructions != null) {
1181 final Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
1182 if (matcher.find()) {
1183 setAccountCreationFailed(instructions.substring(matcher.start(), matcher.end()));
1184 }
1185 }
1186 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1187 }
1188 }, true);
1189 }
1190
1191 private void setAccountCreationFailed(final String url) {
1192 final HttpUrl httpUrl = url == null ? null : HttpUrl.parse(url);
1193 if (httpUrl != null && httpUrl.isHttps()) {
1194 this.redirectionUrl = httpUrl;
1195 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1196 }
1197 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1198 }
1199
1200 public HttpUrl getRedirectionUrl() {
1201 return this.redirectionUrl;
1202 }
1203
1204 public void resetEverything() {
1205 resetAttemptCount(true);
1206 resetStreamId();
1207 clearIqCallbacks();
1208 this.stanzasSent = 0;
1209 mStanzaQueue.clear();
1210 this.redirectionUrl = null;
1211 synchronized (this.disco) {
1212 disco.clear();
1213 }
1214 synchronized (this.commands) {
1215 this.commands.clear();
1216 }
1217 }
1218
1219 private void sendBindRequest() {
1220 try {
1221 mXmppConnectionService.restoredFromDatabaseLatch.await();
1222 } catch (InterruptedException e) {
1223 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while waiting for DB restore during bind");
1224 return;
1225 }
1226 clearIqCallbacks();
1227 if (account.getJid().isBareJid()) {
1228 account.setResource(this.createNewResource());
1229 } else {
1230 fixResource(mXmppConnectionService, account);
1231 }
1232 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1233 final String resource = Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1234 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1235 this.sendUnmodifiedIqPacket(iq, (account, packet) -> {
1236 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1237 return;
1238 }
1239 final Element bind = packet.findChild("bind");
1240 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1241 isBound = true;
1242 final Element jid = bind.findChild("jid");
1243 if (jid != null && jid.getContent() != null) {
1244 try {
1245 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1246 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1247 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server tried to re-assign domain to " + assignedJid.getDomain());
1248 throw new StateChangingError(Account.State.BIND_FAILURE);
1249 }
1250 if (account.setJid(assignedJid)) {
1251 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": jid changed during bind. updating database");
1252 mXmppConnectionService.databaseBackend.updateAccount(account);
1253 }
1254 if (streamFeatures.hasChild("session")
1255 && !streamFeatures.findChild("session").hasChild("optional")) {
1256 sendStartSession();
1257 } else {
1258 sendPostBindInitialization();
1259 }
1260 return;
1261 } catch (final IllegalArgumentException e) {
1262 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server reported invalid jid (" + jid.getContent() + ") on bind");
1263 }
1264 } else {
1265 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure. (no jid)");
1266 }
1267 } else {
1268 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet);
1269 }
1270 final Element error = packet.findChild("error");
1271 if (packet.getType() == IqPacket.TYPE.ERROR && error != null && error.hasChild("conflict")) {
1272 account.setResource(createNewResource());
1273 }
1274 throw new StateChangingError(Account.State.BIND_FAILURE);
1275 }, true);
1276 }
1277
1278 private void clearIqCallbacks() {
1279 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1280 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1281 synchronized (this.packetCallbacks) {
1282 if (this.packetCallbacks.size() == 0) {
1283 return;
1284 }
1285 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": clearing " + this.packetCallbacks.size() + " iq callbacks");
1286 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
1287 while (iterator.hasNext()) {
1288 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1289 callbacks.add(entry.second);
1290 iterator.remove();
1291 }
1292 }
1293 for (OnIqPacketReceived callback : callbacks) {
1294 try {
1295 callback.onIqPacketReceived(account, failurePacket);
1296 } catch (StateChangingError error) {
1297 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": caught StateChangingError(" + error.state.toString() + ") while clearing callbacks");
1298 //ignore
1299 }
1300 }
1301 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
1302 }
1303
1304 public void sendDiscoTimeout() {
1305 if (mWaitForDisco.compareAndSet(true, false)) {
1306 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1307 finalizeBind();
1308 }
1309 }
1310
1311 private void sendStartSession() {
1312 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": sending legacy session to outdated server");
1313 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1314 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1315 this.sendUnmodifiedIqPacket(startSession, (account, packet) -> {
1316 if (packet.getType() == IqPacket.TYPE.RESULT) {
1317 sendPostBindInitialization();
1318 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1319 throw new StateChangingError(Account.State.SESSION_FAILURE);
1320 }
1321 }, true);
1322 }
1323
1324 private void sendPostBindInitialization() {
1325 smVersion = 0;
1326 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
1327 smVersion = 3;
1328 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
1329 smVersion = 2;
1330 }
1331 if (smVersion != 0) {
1332 synchronized (this.mStanzaQueue) {
1333 final EnablePacket enable = new EnablePacket(smVersion);
1334 tagWriter.writeStanzaAsync(enable);
1335 stanzasSent = 0;
1336 mStanzaQueue.clear();
1337 }
1338 }
1339 features.carbonsEnabled = false;
1340 features.blockListRequested = false;
1341 synchronized (this.disco) {
1342 this.disco.clear();
1343 }
1344 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1345 mPendingServiceDiscoveries.set(0);
1346 if (smVersion == 0 || Patches.DISCO_EXCEPTIONS.contains(account.getJid().getDomain().toEscapedString())) {
1347 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": do not wait for service discovery");
1348 mWaitForDisco.set(false);
1349 } else {
1350 mWaitForDisco.set(true);
1351 }
1352 lastDiscoStarted = SystemClock.elapsedRealtime();
1353 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1354 Element caps = streamFeatures.findChild("c");
1355 final String hash = caps == null ? null : caps.getAttribute("hash");
1356 final String ver = caps == null ? null : caps.getAttribute("ver");
1357 ServiceDiscoveryResult discoveryResult = null;
1358 if (hash != null && ver != null) {
1359 discoveryResult = mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1360 }
1361 final boolean requestDiscoItemsFirst = !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1362 if (requestDiscoItemsFirst) {
1363 sendServiceDiscoveryItems(account.getDomain());
1364 }
1365 if (discoveryResult == null) {
1366 sendServiceDiscoveryInfo(account.getDomain());
1367 } else {
1368 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1369 disco.put(account.getDomain(), discoveryResult);
1370 }
1371 discoverMamPreferences();
1372 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1373 if (!requestDiscoItemsFirst) {
1374 sendServiceDiscoveryItems(account.getDomain());
1375 }
1376
1377 if (!mWaitForDisco.get()) {
1378 finalizeBind();
1379 }
1380 this.lastSessionStarted = SystemClock.elapsedRealtime();
1381 }
1382
1383 private void sendServiceDiscoveryInfo(final Jid jid) {
1384 mPendingServiceDiscoveries.incrementAndGet();
1385 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1386 iq.setTo(jid);
1387 iq.query("http://jabber.org/protocol/disco#info");
1388 this.sendIqPacket(iq, (account, packet) -> {
1389 if (packet.getType() == IqPacket.TYPE.RESULT) {
1390 boolean advancedStreamFeaturesLoaded;
1391 synchronized (XmppConnection.this.disco) {
1392 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1393 if (jid.equals(account.getDomain())) {
1394 mXmppConnectionService.databaseBackend.insertDiscoveryResult(result);
1395 }
1396 disco.put(jid, result);
1397 advancedStreamFeaturesLoaded = disco.containsKey(account.getDomain())
1398 && disco.containsKey(account.getJid().asBareJid());
1399 }
1400 if (advancedStreamFeaturesLoaded && (jid.equals(account.getDomain()) || jid.equals(account.getJid().asBareJid()))) {
1401 enableAdvancedStreamFeatures();
1402 }
1403 } else if (packet.getType() == IqPacket.TYPE.ERROR) {
1404 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco info for " + jid.toString());
1405 final boolean serverOrAccount = jid.equals(account.getDomain()) || jid.equals(account.getJid().asBareJid());
1406 final boolean advancedStreamFeaturesLoaded;
1407 if (serverOrAccount) {
1408 synchronized (XmppConnection.this.disco) {
1409 disco.put(jid, ServiceDiscoveryResult.empty());
1410 advancedStreamFeaturesLoaded = disco.containsKey(account.getDomain()) && disco.containsKey(account.getJid().asBareJid());
1411 }
1412 } else {
1413 advancedStreamFeaturesLoaded = false;
1414 }
1415 if (advancedStreamFeaturesLoaded) {
1416 enableAdvancedStreamFeatures();
1417 }
1418 }
1419 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1420 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1421 && mWaitForDisco.compareAndSet(true, false)) {
1422 finalizeBind();
1423 }
1424 }
1425 });
1426 }
1427
1428 private void discoverMamPreferences() {
1429 IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1430 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1431 sendIqPacket(request, (account, response) -> {
1432 if (response.getType() == IqPacket.TYPE.RESULT) {
1433 Element prefs = response.findChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1434 isMamPreferenceAlways = "always".equals(prefs == null ? null : prefs.getAttribute("default"));
1435 }
1436 });
1437 }
1438
1439 private void discoverCommands() {
1440 final IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1441 request.setTo(account.getDomain());
1442 request.addChild("query", Namespace.DISCO_ITEMS).setAttribute("node", Namespace.COMMANDS);
1443 sendIqPacket(request, (account, response) -> {
1444 if (response.getType() == IqPacket.TYPE.RESULT) {
1445 final Element query = response.findChild("query", Namespace.DISCO_ITEMS);
1446 if (query == null) {
1447 return;
1448 }
1449 final HashMap<String, Jid> commands = new HashMap<>();
1450 for (final Element child : query.getChildren()) {
1451 if ("item".equals(child.getName())) {
1452 final String node = child.getAttribute("node");
1453 final Jid jid = child.getAttributeAsJid("jid");
1454 if (node != null && jid != null) {
1455 commands.put(node, jid);
1456 }
1457 }
1458 }
1459 Log.d(Config.LOGTAG, commands.toString());
1460 synchronized (this.commands) {
1461 this.commands.clear();
1462 this.commands.putAll(commands);
1463 }
1464 }
1465 });
1466 }
1467
1468 public boolean isMamPreferenceAlways() {
1469 return isMamPreferenceAlways;
1470 }
1471
1472 private void finalizeBind() {
1473 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
1474 if (bindListener != null) {
1475 bindListener.onBind(account);
1476 }
1477 changeStatus(Account.State.ONLINE);
1478 }
1479
1480 private void enableAdvancedStreamFeatures() {
1481 if (getFeatures().blocking() && !features.blockListRequested) {
1482 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
1483 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1484 }
1485 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1486 listener.onAdvancedStreamFeaturesAvailable(account);
1487 }
1488 if (getFeatures().carbons() && !features.carbonsEnabled) {
1489 sendEnableCarbons();
1490 }
1491 if (getFeatures().commands()) {
1492 discoverCommands();
1493 }
1494 }
1495
1496 private void sendServiceDiscoveryItems(final Jid server) {
1497 mPendingServiceDiscoveries.incrementAndGet();
1498 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1499 iq.setTo(server.getDomain());
1500 iq.query("http://jabber.org/protocol/disco#items");
1501 this.sendIqPacket(iq, (account, packet) -> {
1502 if (packet.getType() == IqPacket.TYPE.RESULT) {
1503 final HashSet<Jid> items = new HashSet<>();
1504 final List<Element> elements = packet.query().getChildren();
1505 for (final Element element : elements) {
1506 if (element.getName().equals("item")) {
1507 final Jid jid = InvalidJid.getNullForInvalid(element.getAttributeAsJid("jid"));
1508 if (jid != null && !jid.equals(account.getDomain())) {
1509 items.add(jid);
1510 }
1511 }
1512 }
1513 for (Jid jid : items) {
1514 sendServiceDiscoveryInfo(jid);
1515 }
1516 } else {
1517 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco items of " + server);
1518 }
1519 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1520 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1521 && mWaitForDisco.compareAndSet(true, false)) {
1522 finalizeBind();
1523 }
1524 }
1525 });
1526 }
1527
1528 private void sendEnableCarbons() {
1529 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1530 iq.addChild("enable", "urn:xmpp:carbons:2");
1531 this.sendIqPacket(iq, (account, packet) -> {
1532 if (!packet.hasChild("error")) {
1533 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1534 + ": successfully enabled carbons");
1535 features.carbonsEnabled = true;
1536 } else {
1537 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1538 + ": could not enable carbons " + packet);
1539 }
1540 });
1541 }
1542
1543 private void processStreamError(final Tag currentTag) throws IOException {
1544 final Element streamError = tagReader.readElement(currentTag);
1545 if (streamError == null) {
1546 return;
1547 }
1548 if (streamError.hasChild("conflict")) {
1549 account.setResource(createNewResource());
1550 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": switching resource due to conflict (" + account.getResource() + ")");
1551 throw new IOException();
1552 } else if (streamError.hasChild("host-unknown")) {
1553 throw new StateChangingException(Account.State.HOST_UNKNOWN);
1554 } else if (streamError.hasChild("policy-violation")) {
1555 this.lastConnect = SystemClock.elapsedRealtime();
1556 final String text = streamError.findChildContent("text");
1557 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": policy violation. " + text);
1558 failPendingMessages(text);
1559 throw new StateChangingException(Account.State.POLICY_VIOLATION);
1560 } else {
1561 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError);
1562 throw new StateChangingException(Account.State.STREAM_ERROR);
1563 }
1564 }
1565
1566 private void failPendingMessages(final String error) {
1567 synchronized (this.mStanzaQueue) {
1568 for (int i = 0; i < mStanzaQueue.size(); ++i) {
1569 final AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
1570 if (stanza instanceof MessagePacket) {
1571 final MessagePacket packet = (MessagePacket) stanza;
1572 final String id = packet.getId();
1573 final Jid to = packet.getTo();
1574 mXmppConnectionService.markMessage(account,
1575 to.asBareJid(),
1576 id,
1577 Message.STATUS_SEND_FAILED,
1578 error);
1579 }
1580 }
1581 }
1582 }
1583
1584 private void sendStartStream() throws IOException {
1585 final Tag stream = Tag.start("stream:stream");
1586 stream.setAttribute("to", account.getServer());
1587 stream.setAttribute("version", "1.0");
1588 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
1589 stream.setAttribute("xmlns", "jabber:client");
1590 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1591 tagWriter.writeTag(stream);
1592 }
1593
1594 private String createNewResource() {
1595 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
1596 }
1597
1598 private String nextRandomId() {
1599 return nextRandomId(false);
1600 }
1601
1602 private String nextRandomId(boolean s) {
1603 return CryptoHelper.random(s ? 3 : 9, mXmppConnectionService.getRNG());
1604 }
1605
1606 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1607 packet.setFrom(account.getJid());
1608 return this.sendUnmodifiedIqPacket(packet, callback, false);
1609 }
1610
1611 public synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
1612 if (packet.getId() == null) {
1613 packet.setAttribute("id", nextRandomId());
1614 }
1615 if (callback != null) {
1616 synchronized (this.packetCallbacks) {
1617 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1618 }
1619 }
1620 this.sendPacket(packet, force);
1621 return packet.getId();
1622 }
1623
1624 public void sendMessagePacket(final MessagePacket packet) {
1625 this.sendPacket(packet);
1626 }
1627
1628 public void sendPresencePacket(final PresencePacket packet) {
1629 this.sendPacket(packet);
1630 }
1631
1632 private synchronized void sendPacket(final AbstractStanza packet) {
1633 sendPacket(packet, false);
1634 }
1635
1636 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
1637 if (stanzasSent == Integer.MAX_VALUE) {
1638 resetStreamId();
1639 disconnect(true);
1640 return;
1641 }
1642 synchronized (this.mStanzaQueue) {
1643 if (force || isBound) {
1644 tagWriter.writeStanzaAsync(packet);
1645 } else {
1646 Log.d(Config.LOGTAG, account.getJid().asBareJid() + " do not write stanza to unbound stream " + packet.toString());
1647 }
1648 if (packet instanceof AbstractAcknowledgeableStanza) {
1649 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1650
1651 if (this.mStanzaQueue.size() != 0) {
1652 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
1653 if (currentHighestKey != stanzasSent) {
1654 throw new AssertionError("Stanza count messed up");
1655 }
1656 }
1657
1658 ++stanzasSent;
1659 this.mStanzaQueue.append(stanzasSent, stanza);
1660 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
1661 if (Config.EXTENDED_SM_LOGGING) {
1662 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1663 }
1664 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1665 }
1666 }
1667 }
1668 }
1669
1670 public void sendPing() {
1671 if (!r()) {
1672 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1673 iq.setFrom(account.getJid());
1674 iq.addChild("ping", Namespace.PING);
1675 this.sendIqPacket(iq, null);
1676 }
1677 this.lastPingSent = SystemClock.elapsedRealtime();
1678 }
1679
1680 public void setOnMessagePacketReceivedListener(
1681 final OnMessagePacketReceived listener) {
1682 this.messageListener = listener;
1683 }
1684
1685 public void setOnUnregisteredIqPacketReceivedListener(
1686 final OnIqPacketReceived listener) {
1687 this.unregisteredIqListener = listener;
1688 }
1689
1690 public void setOnPresencePacketReceivedListener(
1691 final OnPresencePacketReceived listener) {
1692 this.presenceListener = listener;
1693 }
1694
1695 public void setOnJinglePacketReceivedListener(
1696 final OnJinglePacketReceived listener) {
1697 this.jingleListener = listener;
1698 }
1699
1700 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1701 this.statusListener = listener;
1702 }
1703
1704 public void setOnBindListener(final OnBindListener listener) {
1705 this.bindListener = listener;
1706 }
1707
1708 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1709 this.acknowledgedListener = listener;
1710 }
1711
1712 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1713 this.advancedStreamFeaturesLoadedListeners.add(listener);
1714 }
1715
1716 private void forceCloseSocket() {
1717 FileBackend.close(this.socket);
1718 FileBackend.close(this.tagReader);
1719 }
1720
1721 public void interrupt() {
1722 if (this.mThread != null) {
1723 this.mThread.interrupt();
1724 }
1725 }
1726
1727 public void disconnect(final boolean force) {
1728 interrupt();
1729 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
1730 if (force) {
1731 forceCloseSocket();
1732 } else {
1733 final TagWriter currentTagWriter = this.tagWriter;
1734 if (currentTagWriter.isActive()) {
1735 currentTagWriter.finish();
1736 final Socket currentSocket = this.socket;
1737 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
1738 try {
1739 currentTagWriter.await(1, TimeUnit.SECONDS);
1740 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
1741 currentTagWriter.writeTag(Tag.end("stream:stream"));
1742 if (streamCountDownLatch != null) {
1743 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
1744 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote ended stream");
1745 } else {
1746 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote has not closed socket. force closing");
1747 }
1748 }
1749 } catch (InterruptedException e) {
1750 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while gracefully closing stream");
1751 } catch (final IOException e) {
1752 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": io exception during disconnect (" + e.getMessage() + ")");
1753 } finally {
1754 FileBackend.close(currentSocket);
1755 }
1756 } else {
1757 forceCloseSocket();
1758 }
1759 }
1760 }
1761
1762 private void resetStreamId() {
1763 this.streamId = null;
1764 }
1765
1766 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
1767 synchronized (this.disco) {
1768 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
1769 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
1770 if (cursor.getValue().getFeatures().contains(feature)) {
1771 items.add(cursor);
1772 }
1773 }
1774 return items;
1775 }
1776 }
1777
1778 public Jid findDiscoItemByFeature(final String feature) {
1779 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
1780 if (items.size() >= 1) {
1781 return items.get(0).getKey();
1782 }
1783 return null;
1784 }
1785
1786 public boolean r() {
1787 if (getFeatures().sm()) {
1788 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1789 return true;
1790 } else {
1791 return false;
1792 }
1793 }
1794
1795 public List<String> getMucServersWithholdAccount() {
1796 final List<String> servers = getMucServers();
1797 servers.remove(account.getDomain().toEscapedString());
1798 return servers;
1799 }
1800
1801 public List<String> getMucServers() {
1802 List<String> servers = new ArrayList<>();
1803 synchronized (this.disco) {
1804 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
1805 final ServiceDiscoveryResult value = cursor.getValue();
1806 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
1807 && value.hasIdentity("conference", "text")
1808 && !value.getFeatures().contains("jabber:iq:gateway")
1809 && !value.hasIdentity("conference", "irc")) {
1810 servers.add(cursor.getKey().toString());
1811 }
1812 }
1813 }
1814 return servers;
1815 }
1816
1817 public String getMucServer() {
1818 List<String> servers = getMucServers();
1819 return servers.size() > 0 ? servers.get(0) : null;
1820 }
1821
1822 public int getTimeToNextAttempt() {
1823 final int additionalTime = account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
1824 final int interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
1825 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1826 return interval - secondsSinceLast;
1827 }
1828
1829 public int getAttempt() {
1830 return this.attempt;
1831 }
1832
1833 public Features getFeatures() {
1834 return this.features;
1835 }
1836
1837 public long getLastSessionEstablished() {
1838 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1839 return System.currentTimeMillis() - diff;
1840 }
1841
1842 public long getLastConnect() {
1843 return this.lastConnect;
1844 }
1845
1846 public long getLastPingSent() {
1847 return this.lastPingSent;
1848 }
1849
1850 public long getLastDiscoStarted() {
1851 return this.lastDiscoStarted;
1852 }
1853
1854 public long getLastPacketReceived() {
1855 return this.lastPacketReceived;
1856 }
1857
1858 public void sendActive() {
1859 this.sendPacket(new ActivePacket());
1860 }
1861
1862 public void sendInactive() {
1863 this.sendPacket(new InactivePacket());
1864 }
1865
1866 public void resetAttemptCount(boolean resetConnectTime) {
1867 this.attempt = 0;
1868 if (resetConnectTime) {
1869 this.lastConnect = 0;
1870 }
1871 }
1872
1873 public void setInteractive(boolean interactive) {
1874 this.mInteractive = interactive;
1875 }
1876
1877 public Identity getServerIdentity() {
1878 synchronized (this.disco) {
1879 ServiceDiscoveryResult result = disco.get(account.getJid().getDomain());
1880 if (result == null) {
1881 return Identity.UNKNOWN;
1882 }
1883 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
1884 if (id.getType().equals("im") && id.getCategory().equals("server") && id.getName() != null) {
1885 switch (id.getName()) {
1886 case "Prosody":
1887 return Identity.PROSODY;
1888 case "ejabberd":
1889 return Identity.EJABBERD;
1890 case "Slack-XMPP":
1891 return Identity.SLACK;
1892 }
1893 }
1894 }
1895 }
1896 return Identity.UNKNOWN;
1897 }
1898
1899 private IqGenerator getIqGenerator() {
1900 return mXmppConnectionService.getIqGenerator();
1901 }
1902
1903 public enum Identity {
1904 FACEBOOK,
1905 SLACK,
1906 EJABBERD,
1907 PROSODY,
1908 NIMBUZZ,
1909 UNKNOWN
1910 }
1911
1912 private class MyKeyManager implements X509KeyManager {
1913 @Override
1914 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
1915 return account.getPrivateKeyAlias();
1916 }
1917
1918 @Override
1919 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
1920 return null;
1921 }
1922
1923 @Override
1924 public X509Certificate[] getCertificateChain(String alias) {
1925 Log.d(Config.LOGTAG, "getting certificate chain");
1926 try {
1927 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
1928 } catch (final Exception e) {
1929 Log.d(Config.LOGTAG, "could not get certificate chain", e);
1930 return new X509Certificate[0];
1931 }
1932 }
1933
1934 @Override
1935 public String[] getClientAliases(String s, Principal[] principals) {
1936 final String alias = account.getPrivateKeyAlias();
1937 return alias != null ? new String[]{alias} : new String[0];
1938 }
1939
1940 @Override
1941 public String[] getServerAliases(String s, Principal[] principals) {
1942 return new String[0];
1943 }
1944
1945 @Override
1946 public PrivateKey getPrivateKey(String alias) {
1947 try {
1948 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
1949 } catch (Exception e) {
1950 return null;
1951 }
1952 }
1953 }
1954
1955 private static class StateChangingError extends Error {
1956 private final Account.State state;
1957
1958 public StateChangingError(Account.State state) {
1959 this.state = state;
1960 }
1961 }
1962
1963 private static class StateChangingException extends IOException {
1964 private final Account.State state;
1965
1966 public StateChangingException(Account.State state) {
1967 this.state = state;
1968 }
1969 }
1970
1971 public class Features {
1972 XmppConnection connection;
1973 private boolean carbonsEnabled = false;
1974 private boolean encryptionEnabled = false;
1975 private boolean blockListRequested = false;
1976
1977 public Features(final XmppConnection connection) {
1978 this.connection = connection;
1979 }
1980
1981 private boolean hasDiscoFeature(final Jid server, final String feature) {
1982 synchronized (XmppConnection.this.disco) {
1983 return connection.disco.containsKey(server) &&
1984 connection.disco.get(server).getFeatures().contains(feature);
1985 }
1986 }
1987
1988 public boolean carbons() {
1989 return hasDiscoFeature(account.getDomain(), "urn:xmpp:carbons:2");
1990 }
1991
1992 public boolean commands() {
1993 return hasDiscoFeature(account.getDomain(), Namespace.COMMANDS);
1994 }
1995
1996 public boolean easyOnboardingInvites() {
1997 synchronized (commands) {
1998 return commands.containsKey(Namespace.EASY_ONBOARDING_INVITE);
1999 }
2000 }
2001
2002 public boolean bookmarksConversion() {
2003 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION) && pepPublishOptions();
2004 }
2005
2006 public boolean avatarConversion() {
2007 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.AVATAR_CONVERSION) && pepPublishOptions();
2008 }
2009
2010 public boolean blocking() {
2011 return hasDiscoFeature(account.getDomain(), Namespace.BLOCKING);
2012 }
2013
2014 public boolean spamReporting() {
2015 return hasDiscoFeature(account.getDomain(), "urn:xmpp:reporting:reason:spam:0");
2016 }
2017
2018 public boolean flexibleOfflineMessageRetrieval() {
2019 return hasDiscoFeature(account.getDomain(), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
2020 }
2021
2022 public boolean register() {
2023 return hasDiscoFeature(account.getDomain(), Namespace.REGISTER);
2024 }
2025
2026 public boolean invite() {
2027 return connection.streamFeatures != null && connection.streamFeatures.hasChild("register", Namespace.INVITE);
2028 }
2029
2030 public boolean sm() {
2031 return streamId != null
2032 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
2033 }
2034
2035 public boolean csi() {
2036 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
2037 }
2038
2039 public boolean pep() {
2040 synchronized (XmppConnection.this.disco) {
2041 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
2042 return info != null && info.hasIdentity("pubsub", "pep");
2043 }
2044 }
2045
2046 public boolean pepPersistent() {
2047 synchronized (XmppConnection.this.disco) {
2048 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
2049 return info != null && info.getFeatures().contains("http://jabber.org/protocol/pubsub#persistent-items");
2050 }
2051 }
2052
2053 public boolean pepPublishOptions() {
2054 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
2055 }
2056
2057 public boolean pepOmemoWhitelisted() {
2058 return hasDiscoFeature(account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
2059 }
2060
2061 public boolean mam() {
2062 return MessageArchiveService.Version.has(getAccountFeatures());
2063 }
2064
2065 public List<String> getAccountFeatures() {
2066 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
2067 return result == null ? Collections.emptyList() : result.getFeatures();
2068 }
2069
2070 public boolean push() {
2071 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
2072 || hasDiscoFeature(account.getDomain(), Namespace.PUSH);
2073 }
2074
2075 public boolean rosterVersioning() {
2076 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
2077 }
2078
2079 public void setBlockListRequested(boolean value) {
2080 this.blockListRequested = value;
2081 }
2082
2083 public boolean httpUpload(long filesize) {
2084 if (Config.DISABLE_HTTP_UPLOAD) {
2085 return false;
2086 } else {
2087 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
2088 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
2089 if (items.size() > 0) {
2090 try {
2091 long maxsize = Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
2092 if (filesize <= maxsize) {
2093 return true;
2094 } else {
2095 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": http upload is not available for files with size " + filesize + " (max is " + maxsize + ")");
2096 return false;
2097 }
2098 } catch (Exception e) {
2099 return true;
2100 }
2101 }
2102 }
2103 return false;
2104 }
2105 }
2106
2107 public boolean useLegacyHttpUpload() {
2108 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
2109 }
2110
2111 public long getMaxHttpUploadSize() {
2112 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
2113 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
2114 if (items.size() > 0) {
2115 try {
2116 return Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
2117 } catch (Exception e) {
2118 //ignored
2119 }
2120 }
2121 }
2122 return -1;
2123 }
2124
2125 public boolean stanzaIds() {
2126 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
2127 }
2128
2129 public boolean bookmarks2() {
2130 return Config.USE_BOOKMARKS2 /* || hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS2_COMPAT)*/;
2131 }
2132
2133 public boolean externalServiceDiscovery() {
2134 return hasDiscoFeature(account.getDomain(), Namespace.EXTERNAL_SERVICE_DISCOVERY);
2135 }
2136 }
2137}