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.Namespace;
84import eu.siacs.conversations.xml.Tag;
85import eu.siacs.conversations.xml.TagWriter;
86import eu.siacs.conversations.xml.XmlReader;
87import eu.siacs.conversations.xmpp.forms.Data;
88import eu.siacs.conversations.xmpp.forms.Field;
89import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
90import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
91import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
92import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
93import eu.siacs.conversations.xmpp.stanzas.IqPacket;
94import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
95import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
96import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
97import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
98import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
99import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
100import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
101import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
102import rocks.xmpp.addr.Jid;
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 throw new StateChangingError(Account.State.REGISTRATION_SUCCESSFUL);
115 } else {
116 final List<String> PASSWORD_TOO_WEAK_MSGS = Arrays.asList(
117 "The password is too weak",
118 "Please use a longer password.");
119 Element error = packet.findChild("error");
120 Account.State state = Account.State.REGISTRATION_FAILED;
121 if (error != null) {
122 if (error.hasChild("conflict")) {
123 state = Account.State.REGISTRATION_CONFLICT;
124 } else if (error.hasChild("resource-constraint")
125 && "wait".equals(error.getAttribute("type"))) {
126 state = Account.State.REGISTRATION_PLEASE_WAIT;
127 } else if (error.hasChild("not-acceptable")
128 && PASSWORD_TOO_WEAK_MSGS.contains(error.findChildContent("text"))) {
129 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
130 }
131 }
132 throw new StateChangingError(state);
133 }
134 }
135 };
136 protected final Account account;
137 private final Features features = new Features(this);
138 private final HashMap<Jid, ServiceDiscoveryResult> disco = new HashMap<>();
139 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
140 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
141 private final Set<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new HashSet<>();
142 private final XmppConnectionService mXmppConnectionService;
143 private Socket socket;
144 private XmlReader tagReader;
145 private TagWriter tagWriter = new TagWriter();
146 private boolean shouldAuthenticate = true;
147 private boolean inSmacksSession = false;
148 private boolean isBound = false;
149 private Element streamFeatures;
150 private String streamId = null;
151 private int smVersion = 3;
152 private int stanzasReceived = 0;
153 private int stanzasSent = 0;
154 private long lastPacketReceived = 0;
155 private long lastPingSent = 0;
156 private long lastConnect = 0;
157 private long lastSessionStarted = 0;
158 private long lastDiscoStarted = 0;
159 private boolean isMamPreferenceAlways = false;
160 private AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
161 private AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
162 private AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
163 private AtomicInteger mSmCatchupMessageCounter = new AtomicInteger(0);
164 private boolean mInteractive = false;
165 private int attempt = 0;
166 private OnPresencePacketReceived presenceListener = null;
167 private OnJinglePacketReceived jingleListener = null;
168 private OnIqPacketReceived unregisteredIqListener = null;
169 private OnMessagePacketReceived messageListener = null;
170 private OnStatusChanged statusListener = null;
171 private OnBindListener bindListener = null;
172 private OnMessageAcknowledged acknowledgedListener = null;
173 private SaslMechanism saslMechanism;
174 private URL redirectionUrl = null;
175 private String verifiedHostname = null;
176 private volatile Thread mThread;
177 private CountDownLatch mStreamCountDownLatch;
178
179
180 public XmppConnection(final Account account, final XmppConnectionService service) {
181 this.account = account;
182 this.mXmppConnectionService = service;
183 }
184
185 private static void fixResource(Context context, Account account) {
186 String resource = account.getResource();
187 int fixedPartLength = context.getString(R.string.app_name).length() + 1; //include the trailing dot
188 int randomPartLength = 4; // 3 bytes
189 if (resource != null && resource.length() > fixedPartLength + randomPartLength) {
190 if (validBase64(resource.substring(fixedPartLength, fixedPartLength + randomPartLength))) {
191 account.setResource(resource.substring(0, fixedPartLength + randomPartLength));
192 }
193 }
194 }
195
196 private static boolean validBase64(String input) {
197 try {
198 return Base64.decode(input, Base64.URL_SAFE).length == 3;
199 } catch (Throwable throwable) {
200 return false;
201 }
202 }
203
204 private void changeStatus(final Account.State nextStatus) {
205 synchronized (this) {
206 if (Thread.currentThread().isInterrupted()) {
207 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not changing status to " + nextStatus + " because thread was interrupted");
208 return;
209 }
210 if (account.getStatus() != nextStatus) {
211 if ((nextStatus == Account.State.OFFLINE)
212 && (account.getStatus() != Account.State.CONNECTING)
213 && (account.getStatus() != Account.State.ONLINE)
214 && (account.getStatus() != Account.State.DISABLED)) {
215 return;
216 }
217 if (nextStatus == Account.State.ONLINE) {
218 this.attempt = 0;
219 }
220 account.setStatus(nextStatus);
221 } else {
222 return;
223 }
224 }
225 if (statusListener != null) {
226 statusListener.onStatusChanged(account);
227 }
228 }
229
230 public void prepareNewConnection() {
231 this.lastConnect = SystemClock.elapsedRealtime();
232 this.lastPingSent = SystemClock.elapsedRealtime();
233 this.lastDiscoStarted = Long.MAX_VALUE;
234 this.mWaitingForSmCatchup.set(false);
235 this.changeStatus(Account.State.CONNECTING);
236 }
237
238 public boolean isWaitingForSmCatchup() {
239 return mWaitingForSmCatchup.get();
240 }
241
242 public void incrementSmCatchupMessageCounter() {
243 this.mSmCatchupMessageCounter.incrementAndGet();
244 }
245
246 protected void connect() {
247 if (mXmppConnectionService.areMessagesInitialized()) {
248 mXmppConnectionService.resetSendingToWaiting(account);
249 }
250 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
251 features.encryptionEnabled = false;
252 inSmacksSession = false;
253 isBound = false;
254 this.attempt++;
255 this.verifiedHostname = null; //will be set if user entered hostname is being used or hostname was verified with dnssec
256 try {
257 Socket localSocket;
258 shouldAuthenticate = !account.isOptionSet(Account.OPTION_REGISTER);
259 this.changeStatus(Account.State.CONNECTING);
260 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
261 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
262 if (useTor) {
263 String destination;
264 if (account.getHostname().isEmpty() || account.isOnion()) {
265 destination = account.getServer();
266 } else {
267 destination = account.getHostname();
268 this.verifiedHostname = destination;
269 }
270
271 final int port = account.getPort();
272 final boolean directTls = Resolver.useDirectTls(port);
273
274 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": connect to " + destination + " via Tor. directTls="+directTls);
275 localSocket = SocksSocketFactory.createSocketOverTor(destination, port);
276
277 if (directTls) {
278 localSocket = upgradeSocketToTls(localSocket);
279 features.encryptionEnabled = true;
280 }
281
282 try {
283 startXmpp(localSocket);
284 } catch (InterruptedException e) {
285 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
286 return;
287 } catch (Exception e) {
288 throw new IOException(e.getMessage());
289 }
290 } else {
291 final String domain = account.getJid().getDomain();
292 final List<Resolver.Result> results;
293 final boolean hardcoded = extended && !account.getHostname().isEmpty();
294 if (hardcoded) {
295 results = Resolver.fromHardCoded(account.getHostname(), account.getPort());
296 } else {
297 results = Resolver.resolve(domain);
298 }
299 if (Thread.currentThread().isInterrupted()) {
300 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
301 return;
302 }
303 if (results.size() == 0) {
304 Log.e(Config.LOGTAG,account.getJid().asBareJid()+": Resolver results were empty");
305 return;
306 }
307 final Resolver.Result storedBackupResult;
308 if (hardcoded) {
309 storedBackupResult = null;
310 } else {
311 storedBackupResult = mXmppConnectionService.databaseBackend.findResolverResult(domain);
312 if (storedBackupResult != null && !results.contains(storedBackupResult)) {
313 results.add(storedBackupResult);
314 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": loaded backup resolver result from db: " + storedBackupResult);
315 }
316 }
317 for (Iterator<Resolver.Result> iterator = results.iterator(); iterator.hasNext(); ) {
318 final Resolver.Result result = iterator.next();
319 if (Thread.currentThread().isInterrupted()) {
320 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
321 return;
322 }
323 try {
324 // if tls is true, encryption is implied and must not be started
325 features.encryptionEnabled = result.isDirectTls();
326 verifiedHostname = result.isAuthenticated() ? result.getHostname().toString() : null;
327 Log.d(Config.LOGTAG,"verified hostname "+verifiedHostname);
328 final InetSocketAddress addr;
329 if (result.getIp() != null) {
330 addr = new InetSocketAddress(result.getIp(), result.getPort());
331 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
332 + ": using values from resolver " + (result.getHostname() == null ? "" : result.getHostname().toString()
333 + "/") + result.getIp().getHostAddress() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
334 } else {
335 addr = new InetSocketAddress(IDN.toASCII(result.getHostname().toString()), result.getPort());
336 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
337 + ": using values from resolver "
338 + result.getHostname().toString() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
339 }
340
341 localSocket = new Socket();
342 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
343
344 if (features.encryptionEnabled) {
345 localSocket = upgradeSocketToTls(localSocket);
346 }
347
348 localSocket.setSoTimeout(Config.SOCKET_TIMEOUT * 1000);
349 if (startXmpp(localSocket)) {
350 localSocket.setSoTimeout(0); //reset to 0; once the connection is established we don’t want this
351 if (!hardcoded && !result.equals(storedBackupResult)) {
352 mXmppConnectionService.databaseBackend.saveResolverResult(domain, result);
353 }
354 break; // successfully connected to server that speaks xmpp
355 } else {
356 FileBackend.close(localSocket);
357 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
358 }
359 } catch (final StateChangingException e) {
360 if (!iterator.hasNext()) {
361 throw e;
362 }
363 } catch (InterruptedException e) {
364 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
365 return;
366 } catch (final Throwable e) {
367 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage() + "(" + e.getClass().getName() + ")");
368 if (!iterator.hasNext()) {
369 throw new UnknownHostException();
370 }
371 }
372 }
373 }
374 processStream();
375 } catch (final SecurityException e) {
376 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
377 } catch (final StateChangingException e) {
378 this.changeStatus(e.state);
379 } catch (final UnknownHostException | ConnectException e) {
380 this.changeStatus(Account.State.SERVER_NOT_FOUND);
381 } catch (final SocksSocketFactory.HostNotFoundException e) {
382 this.changeStatus(Account.State.SERVER_NOT_FOUND);
383 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
384 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
385 } catch (final IOException | XmlPullParserException e) {
386 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
387 this.changeStatus(Account.State.OFFLINE);
388 this.attempt = Math.max(0, this.attempt - 1);
389 } finally {
390 if (!Thread.currentThread().isInterrupted()) {
391 forceCloseSocket();
392 } else {
393 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not force closing socket because thread was interrupted");
394 }
395 }
396 }
397
398 /**
399 * Starts xmpp protocol, call after connecting to socket
400 *
401 * @return true if server returns with valid xmpp, false otherwise
402 */
403 private boolean startXmpp(Socket socket) throws Exception {
404 if (Thread.currentThread().isInterrupted()) {
405 throw new InterruptedException();
406 }
407 this.socket = socket;
408 tagReader = new XmlReader();
409 if (tagWriter != null) {
410 tagWriter.forceClose();
411 }
412 tagWriter = new TagWriter();
413 tagWriter.setOutputStream(socket.getOutputStream());
414 tagReader.setInputStream(socket.getInputStream());
415 tagWriter.beginDocument();
416 sendStartStream();
417 final Tag tag = tagReader.readTag();
418 if (Thread.currentThread().isInterrupted()) {
419 throw new InterruptedException();
420 }
421 if (socket instanceof SSLSocket) {
422 SSLSocketHelper.log(account, (SSLSocket) socket);
423 }
424 return tag != null && tag.isStart("stream");
425 }
426
427 private TlsFactoryVerifier getTlsFactoryVerifier() throws NoSuchAlgorithmException, KeyManagementException, IOException {
428 final SSLContext sc = SSLSocketHelper.getSSLContext();
429 MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
430 KeyManager[] keyManager;
431 if (account.getPrivateKeyAlias() != null && account.getPassword().isEmpty()) {
432 keyManager = new KeyManager[]{new MyKeyManager()};
433 } else {
434 keyManager = null;
435 }
436 String domain = account.getJid().getDomain();
437 sc.init(keyManager, new X509TrustManager[]{mInteractive ? trustManager.getInteractive(domain) : trustManager.getNonInteractive(domain)}, mXmppConnectionService.getRNG());
438 final SSLSocketFactory factory = sc.getSocketFactory();
439 final DomainHostnameVerifier verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier(), mInteractive);
440 return new TlsFactoryVerifier(factory, verifier);
441 }
442
443 @Override
444 public void run() {
445 synchronized (this) {
446 this.mThread = Thread.currentThread();
447 if (this.mThread.isInterrupted()) {
448 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": aborting connect because thread was interrupted");
449 return;
450 }
451 forceCloseSocket();
452 }
453 connect();
454 }
455
456 private void processStream() throws XmlPullParserException, IOException {
457 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
458 this.mStreamCountDownLatch = streamCountDownLatch;
459 Tag nextTag = tagReader.readTag();
460 while (nextTag != null && !nextTag.isEnd("stream")) {
461 if (nextTag.isStart("error")) {
462 processStreamError(nextTag);
463 } else if (nextTag.isStart("features")) {
464 processStreamFeatures(nextTag);
465 } else if (nextTag.isStart("proceed")) {
466 switchOverToTls();
467 } else if (nextTag.isStart("success")) {
468 final String challenge = tagReader.readElement(nextTag).getContent();
469 try {
470 saslMechanism.getResponse(challenge);
471 } catch (final SaslMechanism.AuthenticationException e) {
472 Log.e(Config.LOGTAG, String.valueOf(e));
473 throw new StateChangingException(Account.State.UNAUTHORIZED);
474 }
475 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": logged in");
476 account.setKey(Account.PINNED_MECHANISM_KEY,
477 String.valueOf(saslMechanism.getPriority()));
478 tagReader.reset();
479 sendStartStream();
480 final Tag tag = tagReader.readTag();
481 if (tag != null && tag.isStart("stream")) {
482 processStream();
483 } else {
484 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
485 }
486 break;
487 } else if (nextTag.isStart("failure")) {
488 final Element failure = tagReader.readElement(nextTag);
489 if (Namespace.SASL.equals(failure.getNamespace())) {
490 final String text = failure.findChildContent("text");
491 if (failure.hasChild("account-disabled") && text != null) {
492 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
493 if (matcher.find()) {
494 try {
495 URL url = new URL(text.substring(matcher.start(), matcher.end()));
496 if (url.getProtocol().equals("https")) {
497 this.redirectionUrl = url;
498 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
499 }
500 } catch (MalformedURLException e) {
501 throw new StateChangingException(Account.State.UNAUTHORIZED);
502 }
503 }
504 }
505 throw new StateChangingException(Account.State.UNAUTHORIZED);
506 } else if (Namespace.TLS.equals(failure.getNamespace())) {
507 throw new StateChangingException(Account.State.TLS_ERROR);
508 } else {
509 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
510 }
511 } else if (nextTag.isStart("challenge")) {
512 final String challenge = tagReader.readElement(nextTag).getContent();
513 final Element response = new Element("response", Namespace.SASL);
514 try {
515 response.setContent(saslMechanism.getResponse(challenge));
516 } catch (final SaslMechanism.AuthenticationException e) {
517 // TODO: Send auth abort tag.
518 Log.e(Config.LOGTAG, e.toString());
519 }
520 tagWriter.writeElement(response);
521 } else if (nextTag.isStart("enabled")) {
522 final Element enabled = tagReader.readElement(nextTag);
523 if ("true".equals(enabled.getAttribute("resume"))) {
524 this.streamId = enabled.getAttribute("id");
525 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
526 + ": stream management(" + smVersion
527 + ") enabled (resumable)");
528 } else {
529 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
530 + ": stream management(" + smVersion + ") enabled");
531 }
532 this.stanzasReceived = 0;
533 this.inSmacksSession = true;
534 final RequestPacket r = new RequestPacket(smVersion);
535 tagWriter.writeStanzaAsync(r);
536 } else if (nextTag.isStart("resumed")) {
537 this.inSmacksSession = true;
538 this.isBound = true;
539 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
540 lastPacketReceived = SystemClock.elapsedRealtime();
541 final Element resumed = tagReader.readElement(nextTag);
542 final String h = resumed.getAttribute("h");
543 try {
544 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
545 final boolean acknowledgedMessages;
546 synchronized (this.mStanzaQueue) {
547 final int serverCount = Integer.parseInt(h);
548 if (serverCount < stanzasSent) {
549 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
550 + ": session resumed with lost packages");
551 stanzasSent = serverCount;
552 } else {
553 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": session resumed");
554 }
555 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
556 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
557 failedStanzas.add(mStanzaQueue.valueAt(i));
558 }
559 mStanzaQueue.clear();
560 }
561 if (acknowledgedMessages) {
562 mXmppConnectionService.updateConversationUi();
563 }
564 Log.d(Config.LOGTAG, "resending " + failedStanzas.size() + " stanzas");
565 for (AbstractAcknowledgeableStanza packet : failedStanzas) {
566 if (packet instanceof MessagePacket) {
567 MessagePacket message = (MessagePacket) packet;
568 mXmppConnectionService.markMessage(account,
569 message.getTo().asBareJid(),
570 message.getId(),
571 Message.STATUS_UNSEND);
572 }
573 sendPacket(packet);
574 }
575 } catch (final NumberFormatException ignored) {
576 }
577 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
578 changeStatus(Account.State.ONLINE);
579 } else if (nextTag.isStart("r")) {
580 tagReader.readElement(nextTag);
581 if (Config.EXTENDED_SM_LOGGING) {
582 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
583 }
584 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
585 tagWriter.writeStanzaAsync(ack);
586 } else if (nextTag.isStart("a")) {
587 boolean accountUiNeedsRefresh = false;
588 synchronized (NotificationService.CATCHUP_LOCK) {
589 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
590 final int messageCount = mSmCatchupMessageCounter.get();
591 final int pendingIQs = packetCallbacks.size();
592 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": SM catchup complete (messages=" + messageCount + ", pending IQs="+pendingIQs+")");
593 accountUiNeedsRefresh = true;
594 if (messageCount > 0) {
595 mXmppConnectionService.getNotificationService().finishBacklog(true, account);
596 }
597 }
598 }
599 if (accountUiNeedsRefresh) {
600 mXmppConnectionService.updateAccountUi();
601 }
602 final Element ack = tagReader.readElement(nextTag);
603 lastPacketReceived = SystemClock.elapsedRealtime();
604 try {
605 final boolean acknowledgedMessages;
606 synchronized (this.mStanzaQueue) {
607 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
608 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence);
609 }
610 if (acknowledgedMessages) {
611 mXmppConnectionService.updateConversationUi();
612 }
613 } catch (NumberFormatException | NullPointerException e) {
614 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server send ack without sequence number");
615 }
616 } else if (nextTag.isStart("failed")) {
617 Element failed = tagReader.readElement(nextTag);
618 try {
619 final int serverCount = Integer.parseInt(failed.getAttribute("h"));
620 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed but server acknowledged stanza #" + serverCount);
621 final boolean acknowledgedMessages;
622 synchronized (this.mStanzaQueue) {
623 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
624 }
625 if (acknowledgedMessages) {
626 mXmppConnectionService.updateConversationUi();
627 }
628 } catch (NumberFormatException | NullPointerException e) {
629 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
630 }
631 resetStreamId();
632 sendBindRequest();
633 } else if (nextTag.isStart("iq")) {
634 processIq(nextTag);
635 } else if (nextTag.isStart("message")) {
636 processMessage(nextTag);
637 } else if (nextTag.isStart("presence")) {
638 processPresence(nextTag);
639 }
640 nextTag = tagReader.readTag();
641 }
642 if (nextTag != null && nextTag.isEnd("stream")) {
643 streamCountDownLatch.countDown();
644 }
645 }
646
647 private boolean acknowledgeStanzaUpTo(int serverCount) {
648 if (serverCount > stanzasSent) {
649 Log.e(Config.LOGTAG, "server acknowledged more stanzas than we sent. serverCount=" + serverCount + ", ourCount=" + stanzasSent);
650 }
651 boolean acknowledgedMessages = false;
652 for (int i = 0; i < mStanzaQueue.size(); ++i) {
653 if (serverCount >= mStanzaQueue.keyAt(i)) {
654 if (Config.EXTENDED_SM_LOGGING) {
655 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
656 }
657 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
658 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
659 MessagePacket packet = (MessagePacket) stanza;
660 acknowledgedMessages |= acknowledgedListener.onMessageAcknowledged(account, packet.getId());
661 }
662 mStanzaQueue.removeAt(i);
663 i--;
664 }
665 }
666 return acknowledgedMessages;
667 }
668
669 private @NonNull
670 Element processPacket(final Tag currentTag, final int packetType) throws XmlPullParserException, IOException {
671 Element element;
672 switch (packetType) {
673 case PACKET_IQ:
674 element = new IqPacket();
675 break;
676 case PACKET_MESSAGE:
677 element = new MessagePacket();
678 break;
679 case PACKET_PRESENCE:
680 element = new PresencePacket();
681 break;
682 default:
683 throw new AssertionError("Should never encounter invalid type");
684 }
685 element.setAttributes(currentTag.getAttributes());
686 Tag nextTag = tagReader.readTag();
687 if (nextTag == null) {
688 throw new IOException("interrupted mid tag");
689 }
690 while (!nextTag.isEnd(element.getName())) {
691 if (!nextTag.isNo()) {
692 final Element child = tagReader.readElement(nextTag);
693 final String type = currentTag.getAttribute("type");
694 if (packetType == PACKET_IQ
695 && "jingle".equals(child.getName())
696 && ("set".equalsIgnoreCase(type) || "get"
697 .equalsIgnoreCase(type))) {
698 element = new JinglePacket();
699 element.setAttributes(currentTag.getAttributes());
700 }
701 element.addChild(child);
702 }
703 nextTag = tagReader.readTag();
704 if (nextTag == null) {
705 throw new IOException("interrupted mid tag");
706 }
707 }
708 if (stanzasReceived == Integer.MAX_VALUE) {
709 resetStreamId();
710 throw new IOException("time to restart the session. cant handle >2 billion pcks");
711 }
712 if (inSmacksSession) {
713 ++stanzasReceived;
714 } else if (features.sm()) {
715 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not counting stanza(" + element.getClass().getSimpleName() + "). Not in smacks session.");
716 }
717 lastPacketReceived = SystemClock.elapsedRealtime();
718 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
719 Log.d(Config.LOGTAG, "[background stanza] " + element);
720 }
721 return element;
722 }
723
724 private void processIq(final Tag currentTag) throws XmlPullParserException, IOException {
725 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
726 if (!packet.valid()) {
727 Log.e(Config.LOGTAG, "encountered invalid iq from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
728 return;
729 }
730 if (packet instanceof JinglePacket) {
731 if (this.jingleListener != null) {
732 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
733 }
734 } else {
735 OnIqPacketReceived callback = null;
736 synchronized (this.packetCallbacks) {
737 if (packetCallbacks.containsKey(packet.getId())) {
738 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
739 // Packets to the server should have responses from the server
740 if (packetCallbackDuple.first.toServer(account)) {
741 if (packet.fromServer(account)) {
742 callback = packetCallbackDuple.second;
743 packetCallbacks.remove(packet.getId());
744 } else {
745 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
746 }
747 } else {
748 if (packet.getFrom() != null && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
749 callback = packetCallbackDuple.second;
750 packetCallbacks.remove(packet.getId());
751 } else {
752 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
753 }
754 }
755 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
756 callback = this.unregisteredIqListener;
757 }
758 }
759 if (callback != null) {
760 try {
761 callback.onIqPacketReceived(account, packet);
762 } catch (StateChangingError error) {
763 throw new StateChangingException(error.state);
764 }
765 }
766 }
767 }
768
769 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
770 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
771 if (!packet.valid()) {
772 Log.e(Config.LOGTAG, "encountered invalid message from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
773 return;
774 }
775 this.messageListener.onMessagePacketReceived(account, packet);
776 }
777
778 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
779 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
780 if (!packet.valid()) {
781 Log.e(Config.LOGTAG, "encountered invalid presence from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
782 return;
783 }
784 this.presenceListener.onPresencePacketReceived(account, packet);
785 }
786
787 private void sendStartTLS() throws IOException {
788 final Tag startTLS = Tag.empty("starttls");
789 startTLS.setAttribute("xmlns", Namespace.TLS);
790 tagWriter.writeTag(startTLS);
791 }
792
793 private void switchOverToTls() throws XmlPullParserException, IOException {
794 tagReader.readTag();
795 final Socket socket = this.socket;
796 final SSLSocket sslSocket = upgradeSocketToTls(socket);
797 tagReader.setInputStream(sslSocket.getInputStream());
798 tagWriter.setOutputStream(sslSocket.getOutputStream());
799 sendStartStream();
800 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
801 features.encryptionEnabled = true;
802 final Tag tag = tagReader.readTag();
803 if (tag != null && tag.isStart("stream")) {
804 SSLSocketHelper.log(account, sslSocket);
805 processStream();
806 } else {
807 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
808 }
809 sslSocket.close();
810 }
811
812 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
813 final TlsFactoryVerifier tlsFactoryVerifier;
814 try {
815 tlsFactoryVerifier = getTlsFactoryVerifier();
816 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
817 throw new StateChangingException(Account.State.TLS_ERROR);
818 }
819 final InetAddress address = socket.getInetAddress();
820 final SSLSocket sslSocket = (SSLSocket) tlsFactoryVerifier.factory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
821 SSLSocketHelper.setSecurity(sslSocket);
822 SSLSocketHelper.setHostname(sslSocket, account.getServer());
823 SSLSocketHelper.setApplicationProtocol(sslSocket, "xmpp-client");
824 if (!tlsFactoryVerifier.verifier.verify(account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
825 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate verification failed");
826 FileBackend.close(sslSocket);
827 throw new StateChangingException(Account.State.TLS_ERROR);
828 }
829 return sslSocket;
830 }
831
832 private void processStreamFeatures(final Tag currentTag) throws XmlPullParserException, IOException {
833 this.streamFeatures = tagReader.readElement(currentTag);
834 final boolean isSecure = features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
835 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
836 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
837 sendStartTLS();
838 } else if (this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
839 if (isSecure) {
840 sendRegistryRequest();
841 } else {
842 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to find STARTTLS for registration process "+ XmlHelper.printElementNames(this.streamFeatures));
843 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
844 }
845 } else if (!this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
846 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
847 } else if (this.streamFeatures.hasChild("mechanisms") && shouldAuthenticate && isSecure) {
848 authenticate();
849 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
850 if (Config.EXTENDED_SM_LOGGING) {
851 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resuming after stanza #" + stanzasReceived);
852 }
853 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
854 this.mSmCatchupMessageCounter.set(0);
855 this.mWaitingForSmCatchup.set(true);
856 this.tagWriter.writeStanzaAsync(resume);
857 } else if (needsBinding) {
858 if (this.streamFeatures.hasChild("bind") && isSecure) {
859 sendBindRequest();
860 } else {
861 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to find bind feature "+ XmlHelper.printElementNames(this.streamFeatures));
862 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
863 }
864 }
865 }
866
867 private void authenticate() throws IOException {
868 final List<String> mechanisms = extractMechanisms(streamFeatures
869 .findChild("mechanisms"));
870 final Element auth = new Element("auth", Namespace.SASL);
871 if (mechanisms.contains("EXTERNAL") && account.getPrivateKeyAlias() != null) {
872 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
873 } else if (mechanisms.contains("SCRAM-SHA-256")) {
874 saslMechanism = new ScramSha256(tagWriter, account, mXmppConnectionService.getRNG());
875 } else if (mechanisms.contains("SCRAM-SHA-1")) {
876 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
877 } else if (mechanisms.contains("PLAIN") && !account.getJid().getDomain().equals("nimbuzz.com")) {
878 saslMechanism = new Plain(tagWriter, account);
879 } else if (mechanisms.contains("DIGEST-MD5")) {
880 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
881 } else if (mechanisms.contains("ANONYMOUS")) {
882 saslMechanism = new Anonymous(tagWriter, account, mXmppConnectionService.getRNG());
883 }
884 if (saslMechanism != null) {
885 final int pinnedMechanism = account.getKeyAsInt(Account.PINNED_MECHANISM_KEY, -1);
886 if (pinnedMechanism > saslMechanism.getPriority()) {
887 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
888 " has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
889 ") than pinned priority (" + pinnedMechanism +
890 "). Possible downgrade attack?");
891 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
892 }
893 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
894 auth.setAttribute("mechanism", saslMechanism.getMechanism());
895 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
896 auth.setContent(saslMechanism.getClientFirstMessage());
897 }
898 tagWriter.writeElement(auth);
899 } else {
900 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to find SASL mechanism "+ saslMechanism.toString());
901 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
902 }
903 }
904
905 private List<String> extractMechanisms(final Element stream) {
906 final ArrayList<String> mechanisms = new ArrayList<>(stream
907 .getChildren().size());
908 for (final Element child : stream.getChildren()) {
909 mechanisms.add(child.getContent());
910 }
911 return mechanisms;
912 }
913
914 private void sendRegistryRequest() {
915 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
916 register.query(Namespace.REGISTER);
917 register.setTo(Jid.of(account.getServer()));
918 sendUnmodifiedIqPacket(register, (account, packet) -> {
919 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
920 return;
921 }
922 if (packet.getType() == IqPacket.TYPE.ERROR) {
923 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
924 }
925 final Element query = packet.query(Namespace.REGISTER);
926 if (query.hasChild("username") && (query.hasChild("password"))) {
927 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
928 final Element username = new Element("username").setContent(account.getUsername());
929 final Element password = new Element("password").setContent(account.getPassword());
930 register1.query(Namespace.REGISTER).addChild(username);
931 register1.query().addChild(password);
932 register1.setFrom(account.getJid().asBareJid());
933 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
934 } else if (query.hasChild("x", Namespace.DATA)) {
935 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
936 final Element blob = query.findChild("data", "urn:xmpp:bob");
937 final String id = packet.getId();
938 InputStream is;
939 if (blob != null) {
940 try {
941 final String base64Blob = blob.getContent();
942 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
943 is = new ByteArrayInputStream(strBlob);
944 } catch (Exception e) {
945 is = null;
946 }
947 } else {
948 try {
949 Field field = data.getFieldByName("url");
950 URL url = field != null && field.getValue() != null ? new URL(field.getValue()) : null;
951 is = url != null ? url.openStream() : null;
952 } catch (IOException e) {
953 is = null;
954 }
955 }
956
957 if (is != null) {
958 Bitmap captcha = BitmapFactory.decodeStream(is);
959 try {
960 if (mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha)) {
961 return;
962 }
963 } catch (Exception e) {
964 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
965 }
966 }
967 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
968 } else if (query.hasChild("instructions") || query.hasChild("x", Namespace.OOB)) {
969 final String instructions = query.findChildContent("instructions");
970 final Element oob = query.findChild("x", Namespace.OOB);
971 final String url = oob == null ? null : oob.findChildContent("url");
972 if (url != null) {
973 setAccountCreationFailed(url);
974 } else if (instructions != null) {
975 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
976 if (matcher.find()) {
977 setAccountCreationFailed(instructions.substring(matcher.start(), matcher.end()));
978 }
979 }
980 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
981 }
982 }, true);
983 }
984
985 private void setAccountCreationFailed(String url) {
986 if (url != null) {
987 try {
988 this.redirectionUrl = new URL(url);
989 if (this.redirectionUrl.getProtocol().equals("https")) {
990 throw new StateChangingError(Account.State.REGISTRATION_WEB);
991 }
992 } catch (MalformedURLException e) {
993 //fall through
994 }
995 }
996 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
997 }
998
999 public URL getRedirectionUrl() {
1000 return this.redirectionUrl;
1001 }
1002
1003 public void resetEverything() {
1004 resetAttemptCount(true);
1005 resetStreamId();
1006 clearIqCallbacks();
1007 this.stanzasSent = 0;
1008 mStanzaQueue.clear();
1009 this.redirectionUrl = null;
1010 synchronized (this.disco) {
1011 disco.clear();
1012 }
1013 }
1014
1015 private void sendBindRequest() {
1016 try {
1017 mXmppConnectionService.restoredFromDatabaseLatch.await();
1018 } catch (InterruptedException e) {
1019 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while waiting for DB restore during bind");
1020 return;
1021 }
1022 clearIqCallbacks();
1023 if (account.getJid().isBareJid()) {
1024 account.setResource(this.createNewResource());
1025 } else {
1026 fixResource(mXmppConnectionService, account);
1027 }
1028 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1029 final String resource = Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1030 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1031 this.sendUnmodifiedIqPacket(iq, (account, packet) -> {
1032 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1033 return;
1034 }
1035 final Element bind = packet.findChild("bind");
1036 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1037 isBound = true;
1038 final Element jid = bind.findChild("jid");
1039 if (jid != null && jid.getContent() != null) {
1040 try {
1041 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1042 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1043 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server tried to re-assign domain to " + assignedJid.getDomain());
1044 throw new StateChangingError(Account.State.BIND_FAILURE);
1045 }
1046 if (account.setJid(assignedJid)) {
1047 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": jid changed during bind. updating database");
1048 mXmppConnectionService.databaseBackend.updateAccount(account);
1049 }
1050 if (streamFeatures.hasChild("session")
1051 && !streamFeatures.findChild("session").hasChild("optional")) {
1052 sendStartSession();
1053 } else {
1054 sendPostBindInitialization();
1055 }
1056 return;
1057 } catch (final IllegalArgumentException e) {
1058 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server reported invalid jid (" + jid.getContent() + ") on bind");
1059 }
1060 } else {
1061 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure. (no jid)");
1062 }
1063 } else {
1064 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet.toString());
1065 }
1066 final Element error = packet.findChild("error");
1067 if (packet.getType() == IqPacket.TYPE.ERROR && error != null && error.hasChild("conflict")) {
1068 account.setResource(createNewResource());
1069 }
1070 throw new StateChangingError(Account.State.BIND_FAILURE);
1071 }, true);
1072 }
1073
1074 private void clearIqCallbacks() {
1075 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1076 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1077 synchronized (this.packetCallbacks) {
1078 if (this.packetCallbacks.size() == 0) {
1079 return;
1080 }
1081 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": clearing " + this.packetCallbacks.size() + " iq callbacks");
1082 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
1083 while (iterator.hasNext()) {
1084 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1085 callbacks.add(entry.second);
1086 iterator.remove();
1087 }
1088 }
1089 for (OnIqPacketReceived callback : callbacks) {
1090 try {
1091 callback.onIqPacketReceived(account, failurePacket);
1092 } catch (StateChangingError error) {
1093 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": caught StateChangingError(" + error.state.toString() + ") while clearing callbacks");
1094 //ignore
1095 }
1096 }
1097 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
1098 }
1099
1100 public void sendDiscoTimeout() {
1101 if (mWaitForDisco.compareAndSet(true, false)) {
1102 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1103 finalizeBind();
1104 }
1105 }
1106
1107 private void sendStartSession() {
1108 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": sending legacy session to outdated server");
1109 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1110 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1111 this.sendUnmodifiedIqPacket(startSession, (account, packet) -> {
1112 if (packet.getType() == IqPacket.TYPE.RESULT) {
1113 sendPostBindInitialization();
1114 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1115 throw new StateChangingError(Account.State.SESSION_FAILURE);
1116 }
1117 }, true);
1118 }
1119
1120 private void sendPostBindInitialization() {
1121 smVersion = 0;
1122 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
1123 smVersion = 3;
1124 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
1125 smVersion = 2;
1126 }
1127 if (smVersion != 0) {
1128 synchronized (this.mStanzaQueue) {
1129 final EnablePacket enable = new EnablePacket(smVersion);
1130 tagWriter.writeStanzaAsync(enable);
1131 stanzasSent = 0;
1132 mStanzaQueue.clear();
1133 }
1134 }
1135 features.carbonsEnabled = false;
1136 features.blockListRequested = false;
1137 synchronized (this.disco) {
1138 this.disco.clear();
1139 }
1140 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1141 mPendingServiceDiscoveries.set(0);
1142 if (smVersion == 0 || Patches.DISCO_EXCEPTIONS.contains(account.getJid().getDomain())) {
1143 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": do not wait for service discovery");
1144 mWaitForDisco.set(false);
1145 } else {
1146 mWaitForDisco.set(true);
1147 }
1148 lastDiscoStarted = SystemClock.elapsedRealtime();
1149 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1150 Element caps = streamFeatures.findChild("c");
1151 final String hash = caps == null ? null : caps.getAttribute("hash");
1152 final String ver = caps == null ? null : caps.getAttribute("ver");
1153 ServiceDiscoveryResult discoveryResult = null;
1154 if (hash != null && ver != null) {
1155 discoveryResult = mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1156 }
1157 final boolean requestDiscoItemsFirst = !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1158 if (requestDiscoItemsFirst) {
1159 sendServiceDiscoveryItems(Jid.of(account.getServer()));
1160 }
1161 if (discoveryResult == null) {
1162 sendServiceDiscoveryInfo(Jid.of(account.getServer()));
1163 } else {
1164 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1165 disco.put(Jid.of(account.getServer()), discoveryResult);
1166 }
1167 discoverMamPreferences();
1168 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1169 if (!requestDiscoItemsFirst) {
1170 sendServiceDiscoveryItems(Jid.of(account.getServer()));
1171 }
1172
1173 if (!mWaitForDisco.get()) {
1174 finalizeBind();
1175 }
1176 this.lastSessionStarted = SystemClock.elapsedRealtime();
1177 }
1178
1179 private void sendServiceDiscoveryInfo(final Jid jid) {
1180 mPendingServiceDiscoveries.incrementAndGet();
1181 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1182 iq.setTo(jid);
1183 iq.query("http://jabber.org/protocol/disco#info");
1184 this.sendIqPacket(iq, (account, packet) -> {
1185 if (packet.getType() == IqPacket.TYPE.RESULT) {
1186 boolean advancedStreamFeaturesLoaded;
1187 synchronized (XmppConnection.this.disco) {
1188 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1189 if (jid.equals(Jid.of(account.getServer()))) {
1190 mXmppConnectionService.databaseBackend.insertDiscoveryResult(result);
1191 }
1192 disco.put(jid, result);
1193 advancedStreamFeaturesLoaded = disco.containsKey(Jid.of(account.getServer()))
1194 && disco.containsKey(account.getJid().asBareJid());
1195 }
1196 if (advancedStreamFeaturesLoaded && (jid.equals(Jid.of(account.getServer())) || jid.equals(account.getJid().asBareJid()))) {
1197 enableAdvancedStreamFeatures();
1198 }
1199 } else if (packet.getType() == IqPacket.TYPE.ERROR) {
1200 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco info for " + jid.toString());
1201 final boolean serverOrAccount = jid.equals(Jid.of(account.getServer())) || jid.equals(account.getJid().asBareJid());
1202 final boolean advancedStreamFeaturesLoaded;
1203 if (serverOrAccount) {
1204 synchronized (XmppConnection.this.disco) {
1205 disco.put(jid, ServiceDiscoveryResult.empty());
1206 advancedStreamFeaturesLoaded = disco.containsKey(Jid.of(account.getServer())) && disco.containsKey(account.getJid().asBareJid());
1207 }
1208 } else {
1209 advancedStreamFeaturesLoaded = false;
1210 }
1211 if (advancedStreamFeaturesLoaded) {
1212 enableAdvancedStreamFeatures();
1213 }
1214 }
1215 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1216 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1217 && mWaitForDisco.compareAndSet(true, false)) {
1218 finalizeBind();
1219 }
1220 }
1221 });
1222 }
1223
1224 private void discoverMamPreferences() {
1225 IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1226 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1227 sendIqPacket(request, (account, response) -> {
1228 if (response.getType() == IqPacket.TYPE.RESULT) {
1229 Element prefs = response.findChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1230 isMamPreferenceAlways = "always".equals(prefs == null ? null : prefs.getAttribute("default"));
1231 }
1232 });
1233 }
1234
1235 public boolean isMamPreferenceAlways() {
1236 return isMamPreferenceAlways;
1237 }
1238
1239 private void finalizeBind() {
1240 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
1241 if (bindListener != null) {
1242 bindListener.onBind(account);
1243 }
1244 changeStatus(Account.State.ONLINE);
1245 }
1246
1247 private void enableAdvancedStreamFeatures() {
1248 if (getFeatures().blocking() && !features.blockListRequested) {
1249 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
1250 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1251 }
1252 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1253 listener.onAdvancedStreamFeaturesAvailable(account);
1254 }
1255 if (getFeatures().carbons() && !features.carbonsEnabled) {
1256 sendEnableCarbons();
1257 }
1258 }
1259
1260 private void sendServiceDiscoveryItems(final Jid server) {
1261 mPendingServiceDiscoveries.incrementAndGet();
1262 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1263 iq.setTo(Jid.ofDomain(server.getDomain()));
1264 iq.query("http://jabber.org/protocol/disco#items");
1265 this.sendIqPacket(iq, (account, packet) -> {
1266 if (packet.getType() == IqPacket.TYPE.RESULT) {
1267 HashSet<Jid> items = new HashSet<Jid>();
1268 final List<Element> elements = packet.query().getChildren();
1269 for (final Element element : elements) {
1270 if (element.getName().equals("item")) {
1271 final Jid jid = InvalidJid.getNullForInvalid(element.getAttributeAsJid("jid"));
1272 if (jid != null && !jid.equals(Jid.of(account.getServer()))) {
1273 items.add(jid);
1274 }
1275 }
1276 }
1277 for (Jid jid : items) {
1278 sendServiceDiscoveryInfo(jid);
1279 }
1280 } else {
1281 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco items of " + server);
1282 }
1283 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1284 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1285 && mWaitForDisco.compareAndSet(true, false)) {
1286 finalizeBind();
1287 }
1288 }
1289 });
1290 }
1291
1292 private void sendEnableCarbons() {
1293 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1294 iq.addChild("enable", "urn:xmpp:carbons:2");
1295 this.sendIqPacket(iq, new OnIqPacketReceived() {
1296
1297 @Override
1298 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1299 if (!packet.hasChild("error")) {
1300 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1301 + ": successfully enabled carbons");
1302 features.carbonsEnabled = true;
1303 } else {
1304 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1305 + ": error enableing carbons " + packet.toString());
1306 }
1307 }
1308 });
1309 }
1310
1311 private void processStreamError(final Tag currentTag) throws XmlPullParserException, IOException {
1312 final Element streamError = tagReader.readElement(currentTag);
1313 if (streamError == null) {
1314 return;
1315 }
1316 if (streamError.hasChild("conflict")) {
1317 account.setResource(createNewResource());
1318 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": switching resource due to conflict (" + account.getResource() + ")");
1319 throw new IOException();
1320 } else if (streamError.hasChild("host-unknown")) {
1321 throw new StateChangingException(Account.State.HOST_UNKNOWN);
1322 } else if (streamError.hasChild("policy-violation")) {
1323 this.lastConnect = SystemClock.elapsedRealtime();
1324 final String text = streamError.findChildContent("text");
1325 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": policy violation. "+text);
1326 throw new StateChangingException(Account.State.POLICY_VIOLATION);
1327 } else {
1328 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError.toString());
1329 throw new StateChangingException(Account.State.STREAM_ERROR);
1330 }
1331 }
1332
1333 private void sendStartStream() throws IOException {
1334 final Tag stream = Tag.start("stream:stream");
1335 stream.setAttribute("to", account.getServer());
1336 stream.setAttribute("version", "1.0");
1337 stream.setAttribute("xml:lang", "en");
1338 stream.setAttribute("xmlns", "jabber:client");
1339 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1340 tagWriter.writeTag(stream);
1341 }
1342
1343 private String createNewResource() {
1344 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
1345 }
1346
1347 private String nextRandomId() {
1348 return nextRandomId(false);
1349 }
1350
1351 private String nextRandomId(boolean s) {
1352 return CryptoHelper.random(s ? 3 : 9, mXmppConnectionService.getRNG());
1353 }
1354
1355 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1356 packet.setFrom(account.getJid());
1357 return this.sendUnmodifiedIqPacket(packet, callback, false);
1358 }
1359
1360 public synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
1361 if (packet.getId() == null) {
1362 packet.setAttribute("id", nextRandomId());
1363 }
1364 if (callback != null) {
1365 synchronized (this.packetCallbacks) {
1366 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1367 }
1368 }
1369 this.sendPacket(packet, force);
1370 return packet.getId();
1371 }
1372
1373 public void sendMessagePacket(final MessagePacket packet) {
1374 this.sendPacket(packet);
1375 }
1376
1377 public void sendPresencePacket(final PresencePacket packet) {
1378 this.sendPacket(packet);
1379 }
1380
1381 private synchronized void sendPacket(final AbstractStanza packet) {
1382 sendPacket(packet, false);
1383 }
1384
1385 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
1386 if (stanzasSent == Integer.MAX_VALUE) {
1387 resetStreamId();
1388 disconnect(true);
1389 return;
1390 }
1391 synchronized (this.mStanzaQueue) {
1392 if (force || isBound) {
1393 tagWriter.writeStanzaAsync(packet);
1394 } else {
1395 Log.d(Config.LOGTAG, account.getJid().asBareJid() + " do not write stanza to unbound stream " + packet.toString());
1396 }
1397 if (packet instanceof AbstractAcknowledgeableStanza) {
1398 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1399
1400 if (this.mStanzaQueue.size() != 0) {
1401 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
1402 if (currentHighestKey != stanzasSent) {
1403 throw new AssertionError("Stanza count messed up");
1404 }
1405 }
1406
1407 ++stanzasSent;
1408 this.mStanzaQueue.append(stanzasSent, stanza);
1409 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
1410 if (Config.EXTENDED_SM_LOGGING) {
1411 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1412 }
1413 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1414 }
1415 }
1416 }
1417 }
1418
1419 public void sendPing() {
1420 if (!r()) {
1421 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1422 iq.setFrom(account.getJid());
1423 iq.addChild("ping", Namespace.PING);
1424 this.sendIqPacket(iq, null);
1425 }
1426 this.lastPingSent = SystemClock.elapsedRealtime();
1427 }
1428
1429 public void setOnMessagePacketReceivedListener(
1430 final OnMessagePacketReceived listener) {
1431 this.messageListener = listener;
1432 }
1433
1434 public void setOnUnregisteredIqPacketReceivedListener(
1435 final OnIqPacketReceived listener) {
1436 this.unregisteredIqListener = listener;
1437 }
1438
1439 public void setOnPresencePacketReceivedListener(
1440 final OnPresencePacketReceived listener) {
1441 this.presenceListener = listener;
1442 }
1443
1444 public void setOnJinglePacketReceivedListener(
1445 final OnJinglePacketReceived listener) {
1446 this.jingleListener = listener;
1447 }
1448
1449 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1450 this.statusListener = listener;
1451 }
1452
1453 public void setOnBindListener(final OnBindListener listener) {
1454 this.bindListener = listener;
1455 }
1456
1457 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1458 this.acknowledgedListener = listener;
1459 }
1460
1461 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1462 this.advancedStreamFeaturesLoadedListeners.add(listener);
1463 }
1464
1465 private void forceCloseSocket() {
1466 FileBackend.close(this.socket);
1467 FileBackend.close(this.tagReader);
1468 }
1469
1470 public void interrupt() {
1471 if (this.mThread != null) {
1472 this.mThread.interrupt();
1473 }
1474 }
1475
1476 public void disconnect(final boolean force) {
1477 interrupt();
1478 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
1479 if (force) {
1480 forceCloseSocket();
1481 } else {
1482 final TagWriter currentTagWriter = this.tagWriter;
1483 if (currentTagWriter.isActive()) {
1484 currentTagWriter.finish();
1485 final Socket currentSocket = this.socket;
1486 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
1487 try {
1488 currentTagWriter.await(1, TimeUnit.SECONDS);
1489 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
1490 currentTagWriter.writeTag(Tag.end("stream:stream"));
1491 if (streamCountDownLatch != null) {
1492 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
1493 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote ended stream");
1494 } else {
1495 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote has not closed socket. force closing");
1496 }
1497 }
1498 } catch (InterruptedException e) {
1499 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while gracefully closing stream");
1500 } catch (final IOException e) {
1501 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": io exception during disconnect (" + e.getMessage() + ")");
1502 } finally {
1503 FileBackend.close(currentSocket);
1504 }
1505 } else {
1506 forceCloseSocket();
1507 }
1508 }
1509 }
1510
1511 private void resetStreamId() {
1512 this.streamId = null;
1513 }
1514
1515 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
1516 synchronized (this.disco) {
1517 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
1518 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
1519 if (cursor.getValue().getFeatures().contains(feature)) {
1520 items.add(cursor);
1521 }
1522 }
1523 return items;
1524 }
1525 }
1526
1527 public Jid findDiscoItemByFeature(final String feature) {
1528 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
1529 if (items.size() >= 1) {
1530 return items.get(0).getKey();
1531 }
1532 return null;
1533 }
1534
1535 public boolean r() {
1536 if (getFeatures().sm()) {
1537 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1538 return true;
1539 } else {
1540 return false;
1541 }
1542 }
1543
1544 public List<String> getMucServersWithholdAccount() {
1545 List<String> servers = getMucServers();
1546 servers.remove(account.getServer());
1547 return servers;
1548 }
1549
1550 public List<String> getMucServers() {
1551 List<String> servers = new ArrayList<>();
1552 synchronized (this.disco) {
1553 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
1554 final ServiceDiscoveryResult value = cursor.getValue();
1555 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
1556 && value.hasIdentity("conference", "text")
1557 && !value.getFeatures().contains("jabber:iq:gateway")
1558 && !value.hasIdentity("conference", "irc")) {
1559 servers.add(cursor.getKey().toString());
1560 }
1561 }
1562 }
1563 return servers;
1564 }
1565
1566 public String getMucServer() {
1567 List<String> servers = getMucServers();
1568 return servers.size() > 0 ? servers.get(0) : null;
1569 }
1570
1571 public int getTimeToNextAttempt() {
1572 final int additionalTime = account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
1573 final int interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
1574 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1575 return interval - secondsSinceLast;
1576 }
1577
1578 public int getAttempt() {
1579 return this.attempt;
1580 }
1581
1582 public Features getFeatures() {
1583 return this.features;
1584 }
1585
1586 public long getLastSessionEstablished() {
1587 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1588 return System.currentTimeMillis() - diff;
1589 }
1590
1591 public long getLastConnect() {
1592 return this.lastConnect;
1593 }
1594
1595 public long getLastPingSent() {
1596 return this.lastPingSent;
1597 }
1598
1599 public long getLastDiscoStarted() {
1600 return this.lastDiscoStarted;
1601 }
1602
1603 public long getLastPacketReceived() {
1604 return this.lastPacketReceived;
1605 }
1606
1607 public void sendActive() {
1608 this.sendPacket(new ActivePacket());
1609 }
1610
1611 public void sendInactive() {
1612 this.sendPacket(new InactivePacket());
1613 }
1614
1615 public void resetAttemptCount(boolean resetConnectTime) {
1616 this.attempt = 0;
1617 if (resetConnectTime) {
1618 this.lastConnect = 0;
1619 }
1620 }
1621
1622 public void setInteractive(boolean interactive) {
1623 this.mInteractive = interactive;
1624 }
1625
1626 public Identity getServerIdentity() {
1627 synchronized (this.disco) {
1628 ServiceDiscoveryResult result = disco.get(Jid.ofDomain(account.getJid().getDomain()));
1629 if (result == null) {
1630 return Identity.UNKNOWN;
1631 }
1632 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
1633 if (id.getType().equals("im") && id.getCategory().equals("server") && id.getName() != null) {
1634 switch (id.getName()) {
1635 case "Prosody":
1636 return Identity.PROSODY;
1637 case "ejabberd":
1638 return Identity.EJABBERD;
1639 case "Slack-XMPP":
1640 return Identity.SLACK;
1641 }
1642 }
1643 }
1644 }
1645 return Identity.UNKNOWN;
1646 }
1647
1648 private IqGenerator getIqGenerator() {
1649 return mXmppConnectionService.getIqGenerator();
1650 }
1651
1652 public enum Identity {
1653 FACEBOOK,
1654 SLACK,
1655 EJABBERD,
1656 PROSODY,
1657 NIMBUZZ,
1658 UNKNOWN
1659 }
1660
1661 private static class TlsFactoryVerifier {
1662 private final SSLSocketFactory factory;
1663 private final DomainHostnameVerifier verifier;
1664
1665 TlsFactoryVerifier(final SSLSocketFactory factory, final DomainHostnameVerifier verifier) throws IOException {
1666 this.factory = factory;
1667 this.verifier = verifier;
1668 if (factory == null || verifier == null) {
1669 throw new IOException("could not setup ssl");
1670 }
1671 }
1672 }
1673
1674 private class MyKeyManager implements X509KeyManager {
1675 @Override
1676 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
1677 return account.getPrivateKeyAlias();
1678 }
1679
1680 @Override
1681 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
1682 return null;
1683 }
1684
1685 @Override
1686 public X509Certificate[] getCertificateChain(String alias) {
1687 Log.d(Config.LOGTAG, "getting certificate chain");
1688 try {
1689 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
1690 } catch (Exception e) {
1691 Log.d(Config.LOGTAG, e.getMessage());
1692 return new X509Certificate[0];
1693 }
1694 }
1695
1696 @Override
1697 public String[] getClientAliases(String s, Principal[] principals) {
1698 final String alias = account.getPrivateKeyAlias();
1699 return alias != null ? new String[]{alias} : new String[0];
1700 }
1701
1702 @Override
1703 public String[] getServerAliases(String s, Principal[] principals) {
1704 return new String[0];
1705 }
1706
1707 @Override
1708 public PrivateKey getPrivateKey(String alias) {
1709 try {
1710 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
1711 } catch (Exception e) {
1712 return null;
1713 }
1714 }
1715 }
1716
1717 private class StateChangingError extends Error {
1718 private final Account.State state;
1719
1720 public StateChangingError(Account.State state) {
1721 this.state = state;
1722 }
1723 }
1724
1725 private class StateChangingException extends IOException {
1726 private final Account.State state;
1727
1728 public StateChangingException(Account.State state) {
1729 this.state = state;
1730 }
1731 }
1732
1733 public class Features {
1734 XmppConnection connection;
1735 private boolean carbonsEnabled = false;
1736 private boolean encryptionEnabled = false;
1737 private boolean blockListRequested = false;
1738
1739 public Features(final XmppConnection connection) {
1740 this.connection = connection;
1741 }
1742
1743 private boolean hasDiscoFeature(final Jid server, final String feature) {
1744 synchronized (XmppConnection.this.disco) {
1745 return connection.disco.containsKey(server) &&
1746 connection.disco.get(server).getFeatures().contains(feature);
1747 }
1748 }
1749
1750 public boolean carbons() {
1751 return hasDiscoFeature(Jid.of(account.getServer()), "urn:xmpp:carbons:2");
1752 }
1753
1754 public boolean bookmarksConversion() {
1755 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION) && pepPublishOptions();
1756 }
1757
1758 public boolean avatarConversion() {
1759 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.AVATAR_CONVERSION) && pepPublishOptions();
1760 }
1761
1762 public boolean blocking() {
1763 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.BLOCKING);
1764 }
1765
1766 public boolean spamReporting() {
1767 return hasDiscoFeature(Jid.of(account.getServer()), "urn:xmpp:reporting:reason:spam:0");
1768 }
1769
1770 public boolean flexibleOfflineMessageRetrieval() {
1771 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
1772 }
1773
1774 public boolean register() {
1775 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.REGISTER);
1776 }
1777
1778 public boolean sm() {
1779 return streamId != null
1780 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1781 }
1782
1783 public boolean csi() {
1784 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1785 }
1786
1787 public boolean pep() {
1788 synchronized (XmppConnection.this.disco) {
1789 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1790 return info != null && info.hasIdentity("pubsub", "pep");
1791 }
1792 }
1793
1794 public boolean pepPersistent() {
1795 synchronized (XmppConnection.this.disco) {
1796 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1797 return info != null && info.getFeatures().contains("http://jabber.org/protocol/pubsub#persistent-items");
1798 }
1799 }
1800
1801 public boolean pepPublishOptions() {
1802 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
1803 }
1804
1805 public boolean pepOmemoWhitelisted() {
1806 return hasDiscoFeature(account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
1807 }
1808
1809 public boolean mam() {
1810 return MessageArchiveService.Version.has(getAccountFeatures());
1811 }
1812
1813 public List<String> getAccountFeatures() {
1814 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
1815 return result == null ? Collections.emptyList() : result.getFeatures();
1816 }
1817
1818 public boolean push() {
1819 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
1820 || hasDiscoFeature(Jid.of(account.getServer()), Namespace.PUSH);
1821 }
1822
1823 public boolean rosterVersioning() {
1824 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1825 }
1826
1827 public void setBlockListRequested(boolean value) {
1828 this.blockListRequested = value;
1829 }
1830
1831 public boolean p1S3FileTransfer() {
1832 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.P1_S3_FILE_TRANSFER);
1833 }
1834
1835 public boolean httpUpload(long filesize) {
1836 if (Config.DISABLE_HTTP_UPLOAD) {
1837 return false;
1838 } else {
1839 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1840 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1841 if (items.size() > 0) {
1842 try {
1843 long maxsize = Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1844 if (filesize <= maxsize) {
1845 return true;
1846 } else {
1847 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": http upload is not available for files with size " + filesize + " (max is " + maxsize + ")");
1848 return false;
1849 }
1850 } catch (Exception e) {
1851 return true;
1852 }
1853 }
1854 }
1855 return false;
1856 }
1857 }
1858
1859 public boolean useLegacyHttpUpload() {
1860 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
1861 }
1862
1863 public long getMaxHttpUploadSize() {
1864 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1865 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1866 if (items.size() > 0) {
1867 try {
1868 return Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1869 } catch (Exception e) {
1870 //ignored
1871 }
1872 }
1873 }
1874 return -1;
1875 }
1876
1877 public boolean stanzaIds() {
1878 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
1879 }
1880 }
1881}