1package eu.siacs.conversations.xmpp;
2
3import android.content.Context;
4import android.graphics.Bitmap;
5import android.graphics.BitmapFactory;
6import android.os.SystemClock;
7import android.security.KeyChain;
8import android.support.annotation.NonNull;
9import android.util.Base64;
10import android.util.Log;
11import android.util.Pair;
12import android.util.SparseArray;
13
14import org.xmlpull.v1.XmlPullParserException;
15
16import java.io.ByteArrayInputStream;
17import java.io.IOException;
18import java.io.InputStream;
19import java.net.ConnectException;
20import java.net.IDN;
21import java.net.InetAddress;
22import java.net.InetSocketAddress;
23import java.net.MalformedURLException;
24import java.net.Socket;
25import java.net.URL;
26import java.net.UnknownHostException;
27import java.security.KeyManagementException;
28import java.security.NoSuchAlgorithmException;
29import java.security.Principal;
30import java.security.PrivateKey;
31import java.security.cert.X509Certificate;
32import java.util.ArrayList;
33import java.util.Arrays;
34import java.util.Collections;
35import java.util.HashMap;
36import java.util.HashSet;
37import java.util.Hashtable;
38import java.util.Iterator;
39import java.util.List;
40import java.util.Map.Entry;
41import java.util.Set;
42import java.util.concurrent.CountDownLatch;
43import java.util.concurrent.TimeUnit;
44import java.util.concurrent.atomic.AtomicBoolean;
45import java.util.concurrent.atomic.AtomicInteger;
46import java.util.regex.Matcher;
47
48import javax.net.ssl.KeyManager;
49import javax.net.ssl.SSLContext;
50import javax.net.ssl.SSLSocket;
51import javax.net.ssl.SSLSocketFactory;
52import javax.net.ssl.X509KeyManager;
53import javax.net.ssl.X509TrustManager;
54
55import eu.siacs.conversations.Config;
56import eu.siacs.conversations.R;
57import eu.siacs.conversations.crypto.DomainHostnameVerifier;
58import eu.siacs.conversations.crypto.XmppDomainVerifier;
59import eu.siacs.conversations.crypto.axolotl.AxolotlService;
60import eu.siacs.conversations.crypto.sasl.Anonymous;
61import eu.siacs.conversations.crypto.sasl.DigestMd5;
62import eu.siacs.conversations.crypto.sasl.External;
63import eu.siacs.conversations.crypto.sasl.Plain;
64import eu.siacs.conversations.crypto.sasl.SaslMechanism;
65import eu.siacs.conversations.crypto.sasl.ScramSha1;
66import eu.siacs.conversations.crypto.sasl.ScramSha256;
67import eu.siacs.conversations.entities.Account;
68import eu.siacs.conversations.entities.Message;
69import eu.siacs.conversations.entities.ServiceDiscoveryResult;
70import eu.siacs.conversations.generator.IqGenerator;
71import eu.siacs.conversations.persistance.FileBackend;
72import eu.siacs.conversations.services.MemorizingTrustManager;
73import eu.siacs.conversations.services.MessageArchiveService;
74import eu.siacs.conversations.services.NotificationService;
75import eu.siacs.conversations.services.XmppConnectionService;
76import eu.siacs.conversations.utils.CryptoHelper;
77import eu.siacs.conversations.utils.Patterns;
78import eu.siacs.conversations.utils.Resolver;
79import eu.siacs.conversations.utils.SSLSocketHelper;
80import eu.siacs.conversations.utils.SocksSocketFactory;
81import eu.siacs.conversations.utils.XmlHelper;
82import eu.siacs.conversations.xml.Element;
83import eu.siacs.conversations.xml.LocalizedContent;
84import eu.siacs.conversations.xml.Namespace;
85import eu.siacs.conversations.xml.Tag;
86import eu.siacs.conversations.xml.TagWriter;
87import eu.siacs.conversations.xml.XmlReader;
88import eu.siacs.conversations.xmpp.forms.Data;
89import eu.siacs.conversations.xmpp.forms.Field;
90import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
91import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
92import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
93import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
94import eu.siacs.conversations.xmpp.stanzas.IqPacket;
95import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
96import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
97import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
98import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
99import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
100import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
101import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
102import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
103import rocks.xmpp.addr.Jid;
104
105public class XmppConnection implements Runnable {
106
107 private static final int PACKET_IQ = 0;
108 private static final int PACKET_MESSAGE = 1;
109 private static final int PACKET_PRESENCE = 2;
110 public final OnIqPacketReceived registrationResponseListener = new OnIqPacketReceived() {
111 @Override
112 public void onIqPacketReceived(Account account, IqPacket packet) {
113 if (packet.getType() == IqPacket.TYPE.RESULT) {
114 account.setOption(Account.OPTION_REGISTER, false);
115 throw new StateChangingError(Account.State.REGISTRATION_SUCCESSFUL);
116 } else {
117 final List<String> PASSWORD_TOO_WEAK_MSGS = Arrays.asList(
118 "The password is too weak",
119 "Please use a longer password.");
120 Element error = packet.findChild("error");
121 Account.State state = Account.State.REGISTRATION_FAILED;
122 if (error != null) {
123 if (error.hasChild("conflict")) {
124 state = Account.State.REGISTRATION_CONFLICT;
125 } else if (error.hasChild("resource-constraint")
126 && "wait".equals(error.getAttribute("type"))) {
127 state = Account.State.REGISTRATION_PLEASE_WAIT;
128 } else if (error.hasChild("not-acceptable")
129 && PASSWORD_TOO_WEAK_MSGS.contains(error.findChildContent("text"))) {
130 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
131 }
132 }
133 throw new StateChangingError(state);
134 }
135 }
136 };
137 protected final Account account;
138 private final Features features = new Features(this);
139 private final HashMap<Jid, ServiceDiscoveryResult> disco = new HashMap<>();
140 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
141 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
142 private final Set<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new HashSet<>();
143 private final XmppConnectionService mXmppConnectionService;
144 private Socket socket;
145 private XmlReader tagReader;
146 private TagWriter tagWriter = new TagWriter();
147 private boolean shouldAuthenticate = true;
148 private boolean inSmacksSession = false;
149 private boolean isBound = false;
150 private Element streamFeatures;
151 private String streamId = null;
152 private int smVersion = 3;
153 private int stanzasReceived = 0;
154 private int stanzasSent = 0;
155 private long lastPacketReceived = 0;
156 private long lastPingSent = 0;
157 private long lastConnect = 0;
158 private long lastSessionStarted = 0;
159 private long lastDiscoStarted = 0;
160 private boolean isMamPreferenceAlways = false;
161 private AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
162 private AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
163 private AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
164 private AtomicInteger mSmCatchupMessageCounter = new AtomicInteger(0);
165 private boolean mInteractive = false;
166 private int attempt = 0;
167 private OnPresencePacketReceived presenceListener = null;
168 private OnJinglePacketReceived jingleListener = null;
169 private OnIqPacketReceived unregisteredIqListener = null;
170 private OnMessagePacketReceived messageListener = null;
171 private OnStatusChanged statusListener = null;
172 private OnBindListener bindListener = null;
173 private OnMessageAcknowledged acknowledgedListener = null;
174 private SaslMechanism saslMechanism;
175 private URL redirectionUrl = null;
176 private String verifiedHostname = null;
177 private volatile Thread mThread;
178 private CountDownLatch mStreamCountDownLatch;
179
180
181 public XmppConnection(final Account account, final XmppConnectionService service) {
182 this.account = account;
183 this.mXmppConnectionService = service;
184 }
185
186 private static void fixResource(Context context, Account account) {
187 String resource = account.getResource();
188 int fixedPartLength = context.getString(R.string.app_name).length() + 1; //include the trailing dot
189 int randomPartLength = 4; // 3 bytes
190 if (resource != null && resource.length() > fixedPartLength + randomPartLength) {
191 if (validBase64(resource.substring(fixedPartLength, fixedPartLength + randomPartLength))) {
192 account.setResource(resource.substring(0, fixedPartLength + randomPartLength));
193 }
194 }
195 }
196
197 private static boolean validBase64(String input) {
198 try {
199 return Base64.decode(input, Base64.URL_SAFE).length == 3;
200 } catch (Throwable throwable) {
201 return false;
202 }
203 }
204
205 private void changeStatus(final Account.State nextStatus) {
206 synchronized (this) {
207 if (Thread.currentThread().isInterrupted()) {
208 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not changing status to " + nextStatus + " because thread was interrupted");
209 return;
210 }
211 if (account.getStatus() != nextStatus) {
212 if ((nextStatus == Account.State.OFFLINE)
213 && (account.getStatus() != Account.State.CONNECTING)
214 && (account.getStatus() != Account.State.ONLINE)
215 && (account.getStatus() != Account.State.DISABLED)) {
216 return;
217 }
218 if (nextStatus == Account.State.ONLINE) {
219 this.attempt = 0;
220 }
221 account.setStatus(nextStatus);
222 } else {
223 return;
224 }
225 }
226 if (statusListener != null) {
227 statusListener.onStatusChanged(account);
228 }
229 }
230
231 public void prepareNewConnection() {
232 this.lastConnect = SystemClock.elapsedRealtime();
233 this.lastPingSent = SystemClock.elapsedRealtime();
234 this.lastDiscoStarted = Long.MAX_VALUE;
235 this.mWaitingForSmCatchup.set(false);
236 this.changeStatus(Account.State.CONNECTING);
237 }
238
239 public boolean isWaitingForSmCatchup() {
240 return mWaitingForSmCatchup.get();
241 }
242
243 public void incrementSmCatchupMessageCounter() {
244 this.mSmCatchupMessageCounter.incrementAndGet();
245 }
246
247 protected void connect() {
248 if (mXmppConnectionService.areMessagesInitialized()) {
249 mXmppConnectionService.resetSendingToWaiting(account);
250 }
251 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
252 features.encryptionEnabled = false;
253 inSmacksSession = false;
254 isBound = false;
255 this.attempt++;
256 this.verifiedHostname = null; //will be set if user entered hostname is being used or hostname was verified with dnssec
257 try {
258 Socket localSocket;
259 shouldAuthenticate = !account.isOptionSet(Account.OPTION_REGISTER);
260 this.changeStatus(Account.State.CONNECTING);
261 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
262 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
263 if (useTor) {
264 String destination;
265 if (account.getHostname().isEmpty() || account.isOnion()) {
266 destination = account.getServer();
267 } else {
268 destination = account.getHostname();
269 this.verifiedHostname = destination;
270 }
271
272 final int port = account.getPort();
273 final boolean directTls = Resolver.useDirectTls(port);
274
275 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": connect to " + destination + " via Tor. directTls="+directTls);
276 localSocket = SocksSocketFactory.createSocketOverTor(destination, port);
277
278 if (directTls) {
279 localSocket = upgradeSocketToTls(localSocket);
280 features.encryptionEnabled = true;
281 }
282
283 try {
284 startXmpp(localSocket);
285 } catch (InterruptedException e) {
286 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
287 return;
288 } catch (Exception e) {
289 throw new IOException(e.getMessage());
290 }
291 } else {
292 final String domain = account.getJid().getDomain();
293 final List<Resolver.Result> results;
294 final boolean hardcoded = extended && !account.getHostname().isEmpty();
295 if (hardcoded) {
296 results = Resolver.fromHardCoded(account.getHostname(), account.getPort());
297 } else {
298 results = Resolver.resolve(domain);
299 }
300 if (Thread.currentThread().isInterrupted()) {
301 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
302 return;
303 }
304 if (results.size() == 0) {
305 Log.e(Config.LOGTAG,account.getJid().asBareJid()+": Resolver results were empty");
306 return;
307 }
308 final Resolver.Result storedBackupResult;
309 if (hardcoded) {
310 storedBackupResult = null;
311 } else {
312 storedBackupResult = mXmppConnectionService.databaseBackend.findResolverResult(domain);
313 if (storedBackupResult != null && !results.contains(storedBackupResult)) {
314 results.add(storedBackupResult);
315 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": loaded backup resolver result from db: " + storedBackupResult);
316 }
317 }
318 for (Iterator<Resolver.Result> iterator = results.iterator(); iterator.hasNext(); ) {
319 final Resolver.Result result = iterator.next();
320 if (Thread.currentThread().isInterrupted()) {
321 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
322 return;
323 }
324 try {
325 // if tls is true, encryption is implied and must not be started
326 features.encryptionEnabled = result.isDirectTls();
327 verifiedHostname = result.isAuthenticated() ? result.getHostname().toString() : null;
328 Log.d(Config.LOGTAG,"verified hostname "+verifiedHostname);
329 final InetSocketAddress addr;
330 if (result.getIp() != null) {
331 addr = new InetSocketAddress(result.getIp(), result.getPort());
332 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
333 + ": using values from resolver " + (result.getHostname() == null ? "" : result.getHostname().toString()
334 + "/") + result.getIp().getHostAddress() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
335 } else {
336 addr = new InetSocketAddress(IDN.toASCII(result.getHostname().toString()), result.getPort());
337 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
338 + ": using values from resolver "
339 + result.getHostname().toString() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
340 }
341
342 localSocket = new Socket();
343 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
344
345 if (features.encryptionEnabled) {
346 localSocket = upgradeSocketToTls(localSocket);
347 }
348
349 localSocket.setSoTimeout(Config.SOCKET_TIMEOUT * 1000);
350 if (startXmpp(localSocket)) {
351 localSocket.setSoTimeout(0); //reset to 0; once the connection is established we don’t want this
352 if (!hardcoded && !result.equals(storedBackupResult)) {
353 mXmppConnectionService.databaseBackend.saveResolverResult(domain, result);
354 }
355 break; // successfully connected to server that speaks xmpp
356 } else {
357 FileBackend.close(localSocket);
358 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
359 }
360 } catch (final StateChangingException e) {
361 if (!iterator.hasNext()) {
362 throw e;
363 }
364 } catch (InterruptedException e) {
365 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
366 return;
367 } catch (final Throwable e) {
368 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage() + "(" + e.getClass().getName() + ")");
369 if (!iterator.hasNext()) {
370 throw new UnknownHostException();
371 }
372 }
373 }
374 }
375 processStream();
376 } catch (final SecurityException e) {
377 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
378 } catch (final StateChangingException e) {
379 this.changeStatus(e.state);
380 } catch (final UnknownHostException | ConnectException e) {
381 this.changeStatus(Account.State.SERVER_NOT_FOUND);
382 } catch (final SocksSocketFactory.HostNotFoundException e) {
383 this.changeStatus(Account.State.SERVER_NOT_FOUND);
384 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
385 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
386 } catch (final IOException | XmlPullParserException e) {
387 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
388 this.changeStatus(Account.State.OFFLINE);
389 this.attempt = Math.max(0, this.attempt - 1);
390 } finally {
391 if (!Thread.currentThread().isInterrupted()) {
392 forceCloseSocket();
393 } else {
394 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not force closing socket because thread was interrupted");
395 }
396 }
397 }
398
399 /**
400 * Starts xmpp protocol, call after connecting to socket
401 *
402 * @return true if server returns with valid xmpp, false otherwise
403 */
404 private boolean startXmpp(Socket socket) throws Exception {
405 if (Thread.currentThread().isInterrupted()) {
406 throw new InterruptedException();
407 }
408 this.socket = socket;
409 tagReader = new XmlReader();
410 if (tagWriter != null) {
411 tagWriter.forceClose();
412 }
413 tagWriter = new TagWriter();
414 tagWriter.setOutputStream(socket.getOutputStream());
415 tagReader.setInputStream(socket.getInputStream());
416 tagWriter.beginDocument();
417 sendStartStream();
418 final Tag tag = tagReader.readTag();
419 if (Thread.currentThread().isInterrupted()) {
420 throw new InterruptedException();
421 }
422 if (socket instanceof SSLSocket) {
423 SSLSocketHelper.log(account, (SSLSocket) socket);
424 }
425 return tag != null && tag.isStart("stream");
426 }
427
428 private TlsFactoryVerifier getTlsFactoryVerifier() throws NoSuchAlgorithmException, KeyManagementException, IOException {
429 final SSLContext sc = SSLSocketHelper.getSSLContext();
430 MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
431 KeyManager[] keyManager;
432 if (account.getPrivateKeyAlias() != null && account.getPassword().isEmpty()) {
433 keyManager = new KeyManager[]{new MyKeyManager()};
434 } else {
435 keyManager = null;
436 }
437 String domain = account.getJid().getDomain();
438 sc.init(keyManager, new X509TrustManager[]{mInteractive ? trustManager.getInteractive(domain) : trustManager.getNonInteractive(domain)}, mXmppConnectionService.getRNG());
439 final SSLSocketFactory factory = sc.getSocketFactory();
440 final DomainHostnameVerifier verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier(), mInteractive);
441 return new TlsFactoryVerifier(factory, verifier);
442 }
443
444 @Override
445 public void run() {
446 synchronized (this) {
447 this.mThread = Thread.currentThread();
448 if (this.mThread.isInterrupted()) {
449 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": aborting connect because thread was interrupted");
450 return;
451 }
452 forceCloseSocket();
453 }
454 connect();
455 }
456
457 private void processStream() throws XmlPullParserException, IOException {
458 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
459 this.mStreamCountDownLatch = streamCountDownLatch;
460 Tag nextTag = tagReader.readTag();
461 while (nextTag != null && !nextTag.isEnd("stream")) {
462 if (nextTag.isStart("error")) {
463 processStreamError(nextTag);
464 } else if (nextTag.isStart("features")) {
465 processStreamFeatures(nextTag);
466 } else if (nextTag.isStart("proceed")) {
467 switchOverToTls();
468 } else if (nextTag.isStart("success")) {
469 final String challenge = tagReader.readElement(nextTag).getContent();
470 try {
471 saslMechanism.getResponse(challenge);
472 } catch (final SaslMechanism.AuthenticationException e) {
473 Log.e(Config.LOGTAG, String.valueOf(e));
474 throw new StateChangingException(Account.State.UNAUTHORIZED);
475 }
476 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": logged in");
477 account.setKey(Account.PINNED_MECHANISM_KEY,
478 String.valueOf(saslMechanism.getPriority()));
479 tagReader.reset();
480 sendStartStream();
481 final Tag tag = tagReader.readTag();
482 if (tag != null && tag.isStart("stream")) {
483 processStream();
484 } else {
485 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
486 }
487 break;
488 } else if (nextTag.isStart("failure")) {
489 final Element failure = tagReader.readElement(nextTag);
490 if (Namespace.SASL.equals(failure.getNamespace())) {
491 final String text = failure.findChildContent("text");
492 if (failure.hasChild("account-disabled") && text != null) {
493 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
494 if (matcher.find()) {
495 try {
496 URL url = new URL(text.substring(matcher.start(), matcher.end()));
497 if (url.getProtocol().equals("https")) {
498 this.redirectionUrl = url;
499 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
500 }
501 } catch (MalformedURLException e) {
502 throw new StateChangingException(Account.State.UNAUTHORIZED);
503 }
504 }
505 }
506 throw new StateChangingException(Account.State.UNAUTHORIZED);
507 } else if (Namespace.TLS.equals(failure.getNamespace())) {
508 throw new StateChangingException(Account.State.TLS_ERROR);
509 } else {
510 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
511 }
512 } else if (nextTag.isStart("challenge")) {
513 final String challenge = tagReader.readElement(nextTag).getContent();
514 final Element response = new Element("response", Namespace.SASL);
515 try {
516 response.setContent(saslMechanism.getResponse(challenge));
517 } catch (final SaslMechanism.AuthenticationException e) {
518 // TODO: Send auth abort tag.
519 Log.e(Config.LOGTAG, e.toString());
520 }
521 tagWriter.writeElement(response);
522 } else if (nextTag.isStart("enabled")) {
523 final Element enabled = tagReader.readElement(nextTag);
524 if ("true".equals(enabled.getAttribute("resume"))) {
525 this.streamId = enabled.getAttribute("id");
526 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
527 + ": stream management(" + smVersion
528 + ") enabled (resumable)");
529 } else {
530 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
531 + ": stream management(" + smVersion + ") enabled");
532 }
533 this.stanzasReceived = 0;
534 this.inSmacksSession = true;
535 final RequestPacket r = new RequestPacket(smVersion);
536 tagWriter.writeStanzaAsync(r);
537 } else if (nextTag.isStart("resumed")) {
538 this.inSmacksSession = true;
539 this.isBound = true;
540 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
541 lastPacketReceived = SystemClock.elapsedRealtime();
542 final Element resumed = tagReader.readElement(nextTag);
543 final String h = resumed.getAttribute("h");
544 try {
545 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
546 final boolean acknowledgedMessages;
547 synchronized (this.mStanzaQueue) {
548 final int serverCount = Integer.parseInt(h);
549 if (serverCount < stanzasSent) {
550 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
551 + ": session resumed with lost packages");
552 stanzasSent = serverCount;
553 } else {
554 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": session resumed");
555 }
556 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
557 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
558 failedStanzas.add(mStanzaQueue.valueAt(i));
559 }
560 mStanzaQueue.clear();
561 }
562 if (acknowledgedMessages) {
563 mXmppConnectionService.updateConversationUi();
564 }
565 Log.d(Config.LOGTAG, "resending " + failedStanzas.size() + " stanzas");
566 for (AbstractAcknowledgeableStanza packet : failedStanzas) {
567 if (packet instanceof MessagePacket) {
568 MessagePacket message = (MessagePacket) packet;
569 mXmppConnectionService.markMessage(account,
570 message.getTo().asBareJid(),
571 message.getId(),
572 Message.STATUS_UNSEND);
573 }
574 sendPacket(packet);
575 }
576 } catch (final NumberFormatException ignored) {
577 }
578 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
579 changeStatus(Account.State.ONLINE);
580 } else if (nextTag.isStart("r")) {
581 tagReader.readElement(nextTag);
582 if (Config.EXTENDED_SM_LOGGING) {
583 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
584 }
585 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
586 tagWriter.writeStanzaAsync(ack);
587 } else if (nextTag.isStart("a")) {
588 boolean accountUiNeedsRefresh = false;
589 synchronized (NotificationService.CATCHUP_LOCK) {
590 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
591 final int messageCount = mSmCatchupMessageCounter.get();
592 final int pendingIQs = packetCallbacks.size();
593 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": SM catchup complete (messages=" + messageCount + ", pending IQs="+pendingIQs+")");
594 accountUiNeedsRefresh = true;
595 if (messageCount > 0) {
596 mXmppConnectionService.getNotificationService().finishBacklog(true, account);
597 }
598 }
599 }
600 if (accountUiNeedsRefresh) {
601 mXmppConnectionService.updateAccountUi();
602 }
603 final Element ack = tagReader.readElement(nextTag);
604 lastPacketReceived = SystemClock.elapsedRealtime();
605 try {
606 final boolean acknowledgedMessages;
607 synchronized (this.mStanzaQueue) {
608 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
609 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence);
610 }
611 if (acknowledgedMessages) {
612 mXmppConnectionService.updateConversationUi();
613 }
614 } catch (NumberFormatException | NullPointerException e) {
615 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server send ack without sequence number");
616 }
617 } else if (nextTag.isStart("failed")) {
618 Element failed = tagReader.readElement(nextTag);
619 try {
620 final int serverCount = Integer.parseInt(failed.getAttribute("h"));
621 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed but server acknowledged stanza #" + serverCount);
622 final boolean acknowledgedMessages;
623 synchronized (this.mStanzaQueue) {
624 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
625 }
626 if (acknowledgedMessages) {
627 mXmppConnectionService.updateConversationUi();
628 }
629 } catch (NumberFormatException | NullPointerException e) {
630 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
631 }
632 resetStreamId();
633 sendBindRequest();
634 } else if (nextTag.isStart("iq")) {
635 processIq(nextTag);
636 } else if (nextTag.isStart("message")) {
637 processMessage(nextTag);
638 } else if (nextTag.isStart("presence")) {
639 processPresence(nextTag);
640 }
641 nextTag = tagReader.readTag();
642 }
643 if (nextTag != null && nextTag.isEnd("stream")) {
644 streamCountDownLatch.countDown();
645 }
646 }
647
648 private boolean acknowledgeStanzaUpTo(int serverCount) {
649 if (serverCount > stanzasSent) {
650 Log.e(Config.LOGTAG, "server acknowledged more stanzas than we sent. serverCount=" + serverCount + ", ourCount=" + stanzasSent);
651 }
652 boolean acknowledgedMessages = false;
653 for (int i = 0; i < mStanzaQueue.size(); ++i) {
654 if (serverCount >= mStanzaQueue.keyAt(i)) {
655 if (Config.EXTENDED_SM_LOGGING) {
656 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
657 }
658 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
659 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
660 MessagePacket packet = (MessagePacket) stanza;
661 acknowledgedMessages |= acknowledgedListener.onMessageAcknowledged(account, packet.getId());
662 }
663 mStanzaQueue.removeAt(i);
664 i--;
665 }
666 }
667 return acknowledgedMessages;
668 }
669
670 private @NonNull
671 Element processPacket(final Tag currentTag, final int packetType) throws XmlPullParserException, IOException {
672 Element element;
673 switch (packetType) {
674 case PACKET_IQ:
675 element = new IqPacket();
676 break;
677 case PACKET_MESSAGE:
678 element = new MessagePacket();
679 break;
680 case PACKET_PRESENCE:
681 element = new PresencePacket();
682 break;
683 default:
684 throw new AssertionError("Should never encounter invalid type");
685 }
686 element.setAttributes(currentTag.getAttributes());
687 Tag nextTag = tagReader.readTag();
688 if (nextTag == null) {
689 throw new IOException("interrupted mid tag");
690 }
691 while (!nextTag.isEnd(element.getName())) {
692 if (!nextTag.isNo()) {
693 final Element child = tagReader.readElement(nextTag);
694 final String type = currentTag.getAttribute("type");
695 if (packetType == PACKET_IQ
696 && "jingle".equals(child.getName())
697 && ("set".equalsIgnoreCase(type) || "get"
698 .equalsIgnoreCase(type))) {
699 element = new JinglePacket();
700 element.setAttributes(currentTag.getAttributes());
701 }
702 element.addChild(child);
703 }
704 nextTag = tagReader.readTag();
705 if (nextTag == null) {
706 throw new IOException("interrupted mid tag");
707 }
708 }
709 if (stanzasReceived == Integer.MAX_VALUE) {
710 resetStreamId();
711 throw new IOException("time to restart the session. cant handle >2 billion pcks");
712 }
713 if (inSmacksSession) {
714 ++stanzasReceived;
715 } else if (features.sm()) {
716 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not counting stanza(" + element.getClass().getSimpleName() + "). Not in smacks session.");
717 }
718 lastPacketReceived = SystemClock.elapsedRealtime();
719 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
720 Log.d(Config.LOGTAG, "[background stanza] " + element);
721 }
722 return element;
723 }
724
725 private void processIq(final Tag currentTag) throws XmlPullParserException, IOException {
726 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
727 if (!packet.valid()) {
728 Log.e(Config.LOGTAG, "encountered invalid iq from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
729 return;
730 }
731 if (packet instanceof JinglePacket) {
732 if (this.jingleListener != null) {
733 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
734 }
735 } else {
736 OnIqPacketReceived callback = null;
737 synchronized (this.packetCallbacks) {
738 if (packetCallbacks.containsKey(packet.getId())) {
739 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
740 // Packets to the server should have responses from the server
741 if (packetCallbackDuple.first.toServer(account)) {
742 if (packet.fromServer(account)) {
743 callback = packetCallbackDuple.second;
744 packetCallbacks.remove(packet.getId());
745 } else {
746 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
747 }
748 } else {
749 if (packet.getFrom() != null && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
750 callback = packetCallbackDuple.second;
751 packetCallbacks.remove(packet.getId());
752 } else {
753 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
754 }
755 }
756 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
757 callback = this.unregisteredIqListener;
758 }
759 }
760 if (callback != null) {
761 try {
762 callback.onIqPacketReceived(account, packet);
763 } catch (StateChangingError error) {
764 throw new StateChangingException(error.state);
765 }
766 }
767 }
768 }
769
770 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
771 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
772 if (!packet.valid()) {
773 Log.e(Config.LOGTAG, "encountered invalid message from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
774 return;
775 }
776 this.messageListener.onMessagePacketReceived(account, packet);
777 }
778
779 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
780 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
781 if (!packet.valid()) {
782 Log.e(Config.LOGTAG, "encountered invalid presence from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
783 return;
784 }
785 this.presenceListener.onPresencePacketReceived(account, packet);
786 }
787
788 private void sendStartTLS() throws IOException {
789 final Tag startTLS = Tag.empty("starttls");
790 startTLS.setAttribute("xmlns", Namespace.TLS);
791 tagWriter.writeTag(startTLS);
792 }
793
794 private void switchOverToTls() throws XmlPullParserException, IOException {
795 tagReader.readTag();
796 final Socket socket = this.socket;
797 final SSLSocket sslSocket = upgradeSocketToTls(socket);
798 tagReader.setInputStream(sslSocket.getInputStream());
799 tagWriter.setOutputStream(sslSocket.getOutputStream());
800 sendStartStream();
801 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
802 features.encryptionEnabled = true;
803 final Tag tag = tagReader.readTag();
804 if (tag != null && tag.isStart("stream")) {
805 SSLSocketHelper.log(account, sslSocket);
806 processStream();
807 } else {
808 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
809 }
810 sslSocket.close();
811 }
812
813 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
814 final TlsFactoryVerifier tlsFactoryVerifier;
815 try {
816 tlsFactoryVerifier = getTlsFactoryVerifier();
817 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
818 throw new StateChangingException(Account.State.TLS_ERROR);
819 }
820 final InetAddress address = socket.getInetAddress();
821 final SSLSocket sslSocket = (SSLSocket) tlsFactoryVerifier.factory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
822 SSLSocketHelper.setSecurity(sslSocket);
823 SSLSocketHelper.setHostname(sslSocket, account.getServer());
824 SSLSocketHelper.setApplicationProtocol(sslSocket, "xmpp-client");
825 if (!tlsFactoryVerifier.verifier.verify(account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
826 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate verification failed");
827 FileBackend.close(sslSocket);
828 throw new StateChangingException(Account.State.TLS_ERROR);
829 }
830 return sslSocket;
831 }
832
833 private void processStreamFeatures(final Tag currentTag) throws XmlPullParserException, IOException {
834 this.streamFeatures = tagReader.readElement(currentTag);
835 final boolean isSecure = features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
836 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
837 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
838 sendStartTLS();
839 } else if (this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
840 if (isSecure) {
841 sendRegistryRequest();
842 } else {
843 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to find STARTTLS for registration process "+ XmlHelper.printElementNames(this.streamFeatures));
844 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
845 }
846 } else if (!this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
847 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
848 } else if (this.streamFeatures.hasChild("mechanisms") && shouldAuthenticate && isSecure) {
849 authenticate();
850 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
851 if (Config.EXTENDED_SM_LOGGING) {
852 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resuming after stanza #" + stanzasReceived);
853 }
854 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
855 this.mSmCatchupMessageCounter.set(0);
856 this.mWaitingForSmCatchup.set(true);
857 this.tagWriter.writeStanzaAsync(resume);
858 } else if (needsBinding) {
859 if (this.streamFeatures.hasChild("bind") && isSecure) {
860 sendBindRequest();
861 } else {
862 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to find bind feature "+ XmlHelper.printElementNames(this.streamFeatures));
863 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
864 }
865 }
866 }
867
868 private void authenticate() throws IOException {
869 final List<String> mechanisms = extractMechanisms(streamFeatures
870 .findChild("mechanisms"));
871 final Element auth = new Element("auth", Namespace.SASL);
872 if (mechanisms.contains("EXTERNAL") && account.getPrivateKeyAlias() != null) {
873 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
874 } else if (mechanisms.contains("SCRAM-SHA-256")) {
875 saslMechanism = new ScramSha256(tagWriter, account, mXmppConnectionService.getRNG());
876 } else if (mechanisms.contains("SCRAM-SHA-1")) {
877 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
878 } else if (mechanisms.contains("PLAIN") && !account.getJid().getDomain().equals("nimbuzz.com")) {
879 saslMechanism = new Plain(tagWriter, account);
880 } else if (mechanisms.contains("DIGEST-MD5")) {
881 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
882 } else if (mechanisms.contains("ANONYMOUS")) {
883 saslMechanism = new Anonymous(tagWriter, account, mXmppConnectionService.getRNG());
884 }
885 if (saslMechanism != null) {
886 final int pinnedMechanism = account.getKeyAsInt(Account.PINNED_MECHANISM_KEY, -1);
887 if (pinnedMechanism > saslMechanism.getPriority()) {
888 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
889 " has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
890 ") than pinned priority (" + pinnedMechanism +
891 "). Possible downgrade attack?");
892 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
893 }
894 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
895 auth.setAttribute("mechanism", saslMechanism.getMechanism());
896 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
897 auth.setContent(saslMechanism.getClientFirstMessage());
898 }
899 tagWriter.writeElement(auth);
900 } else {
901 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to find SASL mechanism "+ saslMechanism.toString());
902 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
903 }
904 }
905
906 private List<String> extractMechanisms(final Element stream) {
907 final ArrayList<String> mechanisms = new ArrayList<>(stream
908 .getChildren().size());
909 for (final Element child : stream.getChildren()) {
910 mechanisms.add(child.getContent());
911 }
912 return mechanisms;
913 }
914
915 private void sendRegistryRequest() {
916 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
917 register.query(Namespace.REGISTER);
918 register.setTo(Jid.of(account.getServer()));
919 sendUnmodifiedIqPacket(register, (account, packet) -> {
920 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
921 return;
922 }
923 if (packet.getType() == IqPacket.TYPE.ERROR) {
924 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
925 }
926 final Element query = packet.query(Namespace.REGISTER);
927 if (query.hasChild("username") && (query.hasChild("password"))) {
928 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
929 final Element username = new Element("username").setContent(account.getUsername());
930 final Element password = new Element("password").setContent(account.getPassword());
931 register1.query(Namespace.REGISTER).addChild(username);
932 register1.query().addChild(password);
933 register1.setFrom(account.getJid().asBareJid());
934 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
935 } else if (query.hasChild("x", Namespace.DATA)) {
936 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
937 final Element blob = query.findChild("data", "urn:xmpp:bob");
938 final String id = packet.getId();
939 InputStream is;
940 if (blob != null) {
941 try {
942 final String base64Blob = blob.getContent();
943 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
944 is = new ByteArrayInputStream(strBlob);
945 } catch (Exception e) {
946 is = null;
947 }
948 } else {
949 try {
950 Field field = data.getFieldByName("url");
951 URL url = field != null && field.getValue() != null ? new URL(field.getValue()) : null;
952 is = url != null ? url.openStream() : null;
953 } catch (IOException e) {
954 is = null;
955 }
956 }
957
958 if (is != null) {
959 Bitmap captcha = BitmapFactory.decodeStream(is);
960 try {
961 if (mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha)) {
962 return;
963 }
964 } catch (Exception e) {
965 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
966 }
967 }
968 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
969 } else if (query.hasChild("instructions") || query.hasChild("x", Namespace.OOB)) {
970 final String instructions = query.findChildContent("instructions");
971 final Element oob = query.findChild("x", Namespace.OOB);
972 final String url = oob == null ? null : oob.findChildContent("url");
973 if (url != null) {
974 setAccountCreationFailed(url);
975 } else if (instructions != null) {
976 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
977 if (matcher.find()) {
978 setAccountCreationFailed(instructions.substring(matcher.start(), matcher.end()));
979 }
980 }
981 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
982 }
983 }, true);
984 }
985
986 private void setAccountCreationFailed(String url) {
987 if (url != null) {
988 try {
989 this.redirectionUrl = new URL(url);
990 if (this.redirectionUrl.getProtocol().equals("https")) {
991 throw new StateChangingError(Account.State.REGISTRATION_WEB);
992 }
993 } catch (MalformedURLException e) {
994 //fall through
995 }
996 }
997 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
998 }
999
1000 public URL getRedirectionUrl() {
1001 return this.redirectionUrl;
1002 }
1003
1004 public void resetEverything() {
1005 resetAttemptCount(true);
1006 resetStreamId();
1007 clearIqCallbacks();
1008 this.stanzasSent = 0;
1009 mStanzaQueue.clear();
1010 this.redirectionUrl = null;
1011 synchronized (this.disco) {
1012 disco.clear();
1013 }
1014 }
1015
1016 private void sendBindRequest() {
1017 try {
1018 mXmppConnectionService.restoredFromDatabaseLatch.await();
1019 } catch (InterruptedException e) {
1020 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while waiting for DB restore during bind");
1021 return;
1022 }
1023 clearIqCallbacks();
1024 if (account.getJid().isBareJid()) {
1025 account.setResource(this.createNewResource());
1026 } else {
1027 fixResource(mXmppConnectionService, account);
1028 }
1029 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1030 final String resource = Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1031 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1032 this.sendUnmodifiedIqPacket(iq, (account, packet) -> {
1033 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1034 return;
1035 }
1036 final Element bind = packet.findChild("bind");
1037 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1038 isBound = true;
1039 final Element jid = bind.findChild("jid");
1040 if (jid != null && jid.getContent() != null) {
1041 try {
1042 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1043 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1044 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server tried to re-assign domain to " + assignedJid.getDomain());
1045 throw new StateChangingError(Account.State.BIND_FAILURE);
1046 }
1047 if (account.setJid(assignedJid)) {
1048 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": jid changed during bind. updating database");
1049 mXmppConnectionService.databaseBackend.updateAccount(account);
1050 }
1051 if (streamFeatures.hasChild("session")
1052 && !streamFeatures.findChild("session").hasChild("optional")) {
1053 sendStartSession();
1054 } else {
1055 sendPostBindInitialization();
1056 }
1057 return;
1058 } catch (final IllegalArgumentException e) {
1059 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server reported invalid jid (" + jid.getContent() + ") on bind");
1060 }
1061 } else {
1062 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure. (no jid)");
1063 }
1064 } else {
1065 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet.toString());
1066 }
1067 final Element error = packet.findChild("error");
1068 if (packet.getType() == IqPacket.TYPE.ERROR && error != null && error.hasChild("conflict")) {
1069 account.setResource(createNewResource());
1070 }
1071 throw new StateChangingError(Account.State.BIND_FAILURE);
1072 }, true);
1073 }
1074
1075 private void clearIqCallbacks() {
1076 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1077 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1078 synchronized (this.packetCallbacks) {
1079 if (this.packetCallbacks.size() == 0) {
1080 return;
1081 }
1082 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": clearing " + this.packetCallbacks.size() + " iq callbacks");
1083 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
1084 while (iterator.hasNext()) {
1085 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1086 callbacks.add(entry.second);
1087 iterator.remove();
1088 }
1089 }
1090 for (OnIqPacketReceived callback : callbacks) {
1091 try {
1092 callback.onIqPacketReceived(account, failurePacket);
1093 } catch (StateChangingError error) {
1094 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": caught StateChangingError(" + error.state.toString() + ") while clearing callbacks");
1095 //ignore
1096 }
1097 }
1098 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
1099 }
1100
1101 public void sendDiscoTimeout() {
1102 if (mWaitForDisco.compareAndSet(true, false)) {
1103 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1104 finalizeBind();
1105 }
1106 }
1107
1108 private void sendStartSession() {
1109 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": sending legacy session to outdated server");
1110 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1111 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1112 this.sendUnmodifiedIqPacket(startSession, (account, packet) -> {
1113 if (packet.getType() == IqPacket.TYPE.RESULT) {
1114 sendPostBindInitialization();
1115 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1116 throw new StateChangingError(Account.State.SESSION_FAILURE);
1117 }
1118 }, true);
1119 }
1120
1121 private void sendPostBindInitialization() {
1122 smVersion = 0;
1123 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
1124 smVersion = 3;
1125 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
1126 smVersion = 2;
1127 }
1128 if (smVersion != 0) {
1129 synchronized (this.mStanzaQueue) {
1130 final EnablePacket enable = new EnablePacket(smVersion);
1131 tagWriter.writeStanzaAsync(enable);
1132 stanzasSent = 0;
1133 mStanzaQueue.clear();
1134 }
1135 }
1136 features.carbonsEnabled = false;
1137 features.blockListRequested = false;
1138 synchronized (this.disco) {
1139 this.disco.clear();
1140 }
1141 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1142 mPendingServiceDiscoveries.set(0);
1143 if (smVersion == 0 || Patches.DISCO_EXCEPTIONS.contains(account.getJid().getDomain())) {
1144 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": do not wait for service discovery");
1145 mWaitForDisco.set(false);
1146 } else {
1147 mWaitForDisco.set(true);
1148 }
1149 lastDiscoStarted = SystemClock.elapsedRealtime();
1150 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1151 Element caps = streamFeatures.findChild("c");
1152 final String hash = caps == null ? null : caps.getAttribute("hash");
1153 final String ver = caps == null ? null : caps.getAttribute("ver");
1154 ServiceDiscoveryResult discoveryResult = null;
1155 if (hash != null && ver != null) {
1156 discoveryResult = mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1157 }
1158 final boolean requestDiscoItemsFirst = !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1159 if (requestDiscoItemsFirst) {
1160 sendServiceDiscoveryItems(Jid.of(account.getServer()));
1161 }
1162 if (discoveryResult == null) {
1163 sendServiceDiscoveryInfo(Jid.of(account.getServer()));
1164 } else {
1165 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1166 disco.put(Jid.of(account.getServer()), discoveryResult);
1167 }
1168 discoverMamPreferences();
1169 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1170 if (!requestDiscoItemsFirst) {
1171 sendServiceDiscoveryItems(Jid.of(account.getServer()));
1172 }
1173
1174 if (!mWaitForDisco.get()) {
1175 finalizeBind();
1176 }
1177 this.lastSessionStarted = SystemClock.elapsedRealtime();
1178 }
1179
1180 private void sendServiceDiscoveryInfo(final Jid jid) {
1181 mPendingServiceDiscoveries.incrementAndGet();
1182 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1183 iq.setTo(jid);
1184 iq.query("http://jabber.org/protocol/disco#info");
1185 this.sendIqPacket(iq, (account, packet) -> {
1186 if (packet.getType() == IqPacket.TYPE.RESULT) {
1187 boolean advancedStreamFeaturesLoaded;
1188 synchronized (XmppConnection.this.disco) {
1189 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1190 if (jid.equals(Jid.of(account.getServer()))) {
1191 mXmppConnectionService.databaseBackend.insertDiscoveryResult(result);
1192 }
1193 disco.put(jid, result);
1194 advancedStreamFeaturesLoaded = disco.containsKey(Jid.of(account.getServer()))
1195 && disco.containsKey(account.getJid().asBareJid());
1196 }
1197 if (advancedStreamFeaturesLoaded && (jid.equals(Jid.of(account.getServer())) || jid.equals(account.getJid().asBareJid()))) {
1198 enableAdvancedStreamFeatures();
1199 }
1200 } else if (packet.getType() == IqPacket.TYPE.ERROR) {
1201 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco info for " + jid.toString());
1202 final boolean serverOrAccount = jid.equals(Jid.of(account.getServer())) || jid.equals(account.getJid().asBareJid());
1203 final boolean advancedStreamFeaturesLoaded;
1204 if (serverOrAccount) {
1205 synchronized (XmppConnection.this.disco) {
1206 disco.put(jid, ServiceDiscoveryResult.empty());
1207 advancedStreamFeaturesLoaded = disco.containsKey(Jid.of(account.getServer())) && disco.containsKey(account.getJid().asBareJid());
1208 }
1209 } else {
1210 advancedStreamFeaturesLoaded = false;
1211 }
1212 if (advancedStreamFeaturesLoaded) {
1213 enableAdvancedStreamFeatures();
1214 }
1215 }
1216 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1217 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1218 && mWaitForDisco.compareAndSet(true, false)) {
1219 finalizeBind();
1220 }
1221 }
1222 });
1223 }
1224
1225 private void discoverMamPreferences() {
1226 IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1227 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1228 sendIqPacket(request, (account, response) -> {
1229 if (response.getType() == IqPacket.TYPE.RESULT) {
1230 Element prefs = response.findChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1231 isMamPreferenceAlways = "always".equals(prefs == null ? null : prefs.getAttribute("default"));
1232 }
1233 });
1234 }
1235
1236 public boolean isMamPreferenceAlways() {
1237 return isMamPreferenceAlways;
1238 }
1239
1240 private void finalizeBind() {
1241 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
1242 if (bindListener != null) {
1243 bindListener.onBind(account);
1244 }
1245 changeStatus(Account.State.ONLINE);
1246 }
1247
1248 private void enableAdvancedStreamFeatures() {
1249 if (getFeatures().blocking() && !features.blockListRequested) {
1250 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
1251 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1252 }
1253 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1254 listener.onAdvancedStreamFeaturesAvailable(account);
1255 }
1256 if (getFeatures().carbons() && !features.carbonsEnabled) {
1257 sendEnableCarbons();
1258 }
1259 }
1260
1261 private void sendServiceDiscoveryItems(final Jid server) {
1262 mPendingServiceDiscoveries.incrementAndGet();
1263 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1264 iq.setTo(Jid.ofDomain(server.getDomain()));
1265 iq.query("http://jabber.org/protocol/disco#items");
1266 this.sendIqPacket(iq, (account, packet) -> {
1267 if (packet.getType() == IqPacket.TYPE.RESULT) {
1268 HashSet<Jid> items = new HashSet<Jid>();
1269 final List<Element> elements = packet.query().getChildren();
1270 for (final Element element : elements) {
1271 if (element.getName().equals("item")) {
1272 final Jid jid = InvalidJid.getNullForInvalid(element.getAttributeAsJid("jid"));
1273 if (jid != null && !jid.equals(Jid.of(account.getServer()))) {
1274 items.add(jid);
1275 }
1276 }
1277 }
1278 for (Jid jid : items) {
1279 sendServiceDiscoveryInfo(jid);
1280 }
1281 } else {
1282 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco items of " + server);
1283 }
1284 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1285 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1286 && mWaitForDisco.compareAndSet(true, false)) {
1287 finalizeBind();
1288 }
1289 }
1290 });
1291 }
1292
1293 private void sendEnableCarbons() {
1294 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1295 iq.addChild("enable", "urn:xmpp:carbons:2");
1296 this.sendIqPacket(iq, new OnIqPacketReceived() {
1297
1298 @Override
1299 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1300 if (!packet.hasChild("error")) {
1301 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1302 + ": successfully enabled carbons");
1303 features.carbonsEnabled = true;
1304 } else {
1305 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1306 + ": error enableing carbons " + packet.toString());
1307 }
1308 }
1309 });
1310 }
1311
1312 private void processStreamError(final Tag currentTag) throws XmlPullParserException, IOException {
1313 final Element streamError = tagReader.readElement(currentTag);
1314 if (streamError == null) {
1315 return;
1316 }
1317 if (streamError.hasChild("conflict")) {
1318 account.setResource(createNewResource());
1319 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": switching resource due to conflict (" + account.getResource() + ")");
1320 throw new IOException();
1321 } else if (streamError.hasChild("host-unknown")) {
1322 throw new StateChangingException(Account.State.HOST_UNKNOWN);
1323 } else if (streamError.hasChild("policy-violation")) {
1324 this.lastConnect = SystemClock.elapsedRealtime();
1325 final String text = streamError.findChildContent("text");
1326 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": policy violation. "+text);
1327 throw new StateChangingException(Account.State.POLICY_VIOLATION);
1328 } else {
1329 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError.toString());
1330 throw new StateChangingException(Account.State.STREAM_ERROR);
1331 }
1332 }
1333
1334 private void sendStartStream() throws IOException {
1335 final Tag stream = Tag.start("stream:stream");
1336 stream.setAttribute("to", account.getServer());
1337 stream.setAttribute("version", "1.0");
1338 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
1339 stream.setAttribute("xmlns", "jabber:client");
1340 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1341 tagWriter.writeTag(stream);
1342 }
1343
1344 private String createNewResource() {
1345 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
1346 }
1347
1348 private String nextRandomId() {
1349 return nextRandomId(false);
1350 }
1351
1352 private String nextRandomId(boolean s) {
1353 return CryptoHelper.random(s ? 3 : 9, mXmppConnectionService.getRNG());
1354 }
1355
1356 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1357 packet.setFrom(account.getJid());
1358 return this.sendUnmodifiedIqPacket(packet, callback, false);
1359 }
1360
1361 public synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
1362 if (packet.getId() == null) {
1363 packet.setAttribute("id", nextRandomId());
1364 }
1365 if (callback != null) {
1366 synchronized (this.packetCallbacks) {
1367 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1368 }
1369 }
1370 this.sendPacket(packet, force);
1371 return packet.getId();
1372 }
1373
1374 public void sendMessagePacket(final MessagePacket packet) {
1375 this.sendPacket(packet);
1376 }
1377
1378 public void sendPresencePacket(final PresencePacket packet) {
1379 this.sendPacket(packet);
1380 }
1381
1382 private synchronized void sendPacket(final AbstractStanza packet) {
1383 sendPacket(packet, false);
1384 }
1385
1386 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
1387 if (stanzasSent == Integer.MAX_VALUE) {
1388 resetStreamId();
1389 disconnect(true);
1390 return;
1391 }
1392 synchronized (this.mStanzaQueue) {
1393 if (force || isBound) {
1394 tagWriter.writeStanzaAsync(packet);
1395 } else {
1396 Log.d(Config.LOGTAG, account.getJid().asBareJid() + " do not write stanza to unbound stream " + packet.toString());
1397 }
1398 if (packet instanceof AbstractAcknowledgeableStanza) {
1399 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1400
1401 if (this.mStanzaQueue.size() != 0) {
1402 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
1403 if (currentHighestKey != stanzasSent) {
1404 throw new AssertionError("Stanza count messed up");
1405 }
1406 }
1407
1408 ++stanzasSent;
1409 this.mStanzaQueue.append(stanzasSent, stanza);
1410 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
1411 if (Config.EXTENDED_SM_LOGGING) {
1412 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1413 }
1414 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1415 }
1416 }
1417 }
1418 }
1419
1420 public void sendPing() {
1421 if (!r()) {
1422 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1423 iq.setFrom(account.getJid());
1424 iq.addChild("ping", Namespace.PING);
1425 this.sendIqPacket(iq, null);
1426 }
1427 this.lastPingSent = SystemClock.elapsedRealtime();
1428 }
1429
1430 public void setOnMessagePacketReceivedListener(
1431 final OnMessagePacketReceived listener) {
1432 this.messageListener = listener;
1433 }
1434
1435 public void setOnUnregisteredIqPacketReceivedListener(
1436 final OnIqPacketReceived listener) {
1437 this.unregisteredIqListener = listener;
1438 }
1439
1440 public void setOnPresencePacketReceivedListener(
1441 final OnPresencePacketReceived listener) {
1442 this.presenceListener = listener;
1443 }
1444
1445 public void setOnJinglePacketReceivedListener(
1446 final OnJinglePacketReceived listener) {
1447 this.jingleListener = listener;
1448 }
1449
1450 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1451 this.statusListener = listener;
1452 }
1453
1454 public void setOnBindListener(final OnBindListener listener) {
1455 this.bindListener = listener;
1456 }
1457
1458 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1459 this.acknowledgedListener = listener;
1460 }
1461
1462 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1463 this.advancedStreamFeaturesLoadedListeners.add(listener);
1464 }
1465
1466 private void forceCloseSocket() {
1467 FileBackend.close(this.socket);
1468 FileBackend.close(this.tagReader);
1469 }
1470
1471 public void interrupt() {
1472 if (this.mThread != null) {
1473 this.mThread.interrupt();
1474 }
1475 }
1476
1477 public void disconnect(final boolean force) {
1478 interrupt();
1479 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
1480 if (force) {
1481 forceCloseSocket();
1482 } else {
1483 final TagWriter currentTagWriter = this.tagWriter;
1484 if (currentTagWriter.isActive()) {
1485 currentTagWriter.finish();
1486 final Socket currentSocket = this.socket;
1487 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
1488 try {
1489 currentTagWriter.await(1, TimeUnit.SECONDS);
1490 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
1491 currentTagWriter.writeTag(Tag.end("stream:stream"));
1492 if (streamCountDownLatch != null) {
1493 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
1494 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote ended stream");
1495 } else {
1496 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote has not closed socket. force closing");
1497 }
1498 }
1499 } catch (InterruptedException e) {
1500 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while gracefully closing stream");
1501 } catch (final IOException e) {
1502 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": io exception during disconnect (" + e.getMessage() + ")");
1503 } finally {
1504 FileBackend.close(currentSocket);
1505 }
1506 } else {
1507 forceCloseSocket();
1508 }
1509 }
1510 }
1511
1512 private void resetStreamId() {
1513 this.streamId = null;
1514 }
1515
1516 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
1517 synchronized (this.disco) {
1518 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
1519 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
1520 if (cursor.getValue().getFeatures().contains(feature)) {
1521 items.add(cursor);
1522 }
1523 }
1524 return items;
1525 }
1526 }
1527
1528 public Jid findDiscoItemByFeature(final String feature) {
1529 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
1530 if (items.size() >= 1) {
1531 return items.get(0).getKey();
1532 }
1533 return null;
1534 }
1535
1536 public boolean r() {
1537 if (getFeatures().sm()) {
1538 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1539 return true;
1540 } else {
1541 return false;
1542 }
1543 }
1544
1545 public List<String> getMucServersWithholdAccount() {
1546 List<String> servers = getMucServers();
1547 servers.remove(account.getServer());
1548 return servers;
1549 }
1550
1551 public List<String> getMucServers() {
1552 List<String> servers = new ArrayList<>();
1553 synchronized (this.disco) {
1554 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
1555 final ServiceDiscoveryResult value = cursor.getValue();
1556 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
1557 && value.hasIdentity("conference", "text")
1558 && !value.getFeatures().contains("jabber:iq:gateway")
1559 && !value.hasIdentity("conference", "irc")) {
1560 servers.add(cursor.getKey().toString());
1561 }
1562 }
1563 }
1564 return servers;
1565 }
1566
1567 public String getMucServer() {
1568 List<String> servers = getMucServers();
1569 return servers.size() > 0 ? servers.get(0) : null;
1570 }
1571
1572 public int getTimeToNextAttempt() {
1573 final int additionalTime = account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
1574 final int interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
1575 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1576 return interval - secondsSinceLast;
1577 }
1578
1579 public int getAttempt() {
1580 return this.attempt;
1581 }
1582
1583 public Features getFeatures() {
1584 return this.features;
1585 }
1586
1587 public long getLastSessionEstablished() {
1588 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1589 return System.currentTimeMillis() - diff;
1590 }
1591
1592 public long getLastConnect() {
1593 return this.lastConnect;
1594 }
1595
1596 public long getLastPingSent() {
1597 return this.lastPingSent;
1598 }
1599
1600 public long getLastDiscoStarted() {
1601 return this.lastDiscoStarted;
1602 }
1603
1604 public long getLastPacketReceived() {
1605 return this.lastPacketReceived;
1606 }
1607
1608 public void sendActive() {
1609 this.sendPacket(new ActivePacket());
1610 }
1611
1612 public void sendInactive() {
1613 this.sendPacket(new InactivePacket());
1614 }
1615
1616 public void resetAttemptCount(boolean resetConnectTime) {
1617 this.attempt = 0;
1618 if (resetConnectTime) {
1619 this.lastConnect = 0;
1620 }
1621 }
1622
1623 public void setInteractive(boolean interactive) {
1624 this.mInteractive = interactive;
1625 }
1626
1627 public Identity getServerIdentity() {
1628 synchronized (this.disco) {
1629 ServiceDiscoveryResult result = disco.get(Jid.ofDomain(account.getJid().getDomain()));
1630 if (result == null) {
1631 return Identity.UNKNOWN;
1632 }
1633 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
1634 if (id.getType().equals("im") && id.getCategory().equals("server") && id.getName() != null) {
1635 switch (id.getName()) {
1636 case "Prosody":
1637 return Identity.PROSODY;
1638 case "ejabberd":
1639 return Identity.EJABBERD;
1640 case "Slack-XMPP":
1641 return Identity.SLACK;
1642 }
1643 }
1644 }
1645 }
1646 return Identity.UNKNOWN;
1647 }
1648
1649 private IqGenerator getIqGenerator() {
1650 return mXmppConnectionService.getIqGenerator();
1651 }
1652
1653 public enum Identity {
1654 FACEBOOK,
1655 SLACK,
1656 EJABBERD,
1657 PROSODY,
1658 NIMBUZZ,
1659 UNKNOWN
1660 }
1661
1662 private static class TlsFactoryVerifier {
1663 private final SSLSocketFactory factory;
1664 private final DomainHostnameVerifier verifier;
1665
1666 TlsFactoryVerifier(final SSLSocketFactory factory, final DomainHostnameVerifier verifier) throws IOException {
1667 this.factory = factory;
1668 this.verifier = verifier;
1669 if (factory == null || verifier == null) {
1670 throw new IOException("could not setup ssl");
1671 }
1672 }
1673 }
1674
1675 private class MyKeyManager implements X509KeyManager {
1676 @Override
1677 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
1678 return account.getPrivateKeyAlias();
1679 }
1680
1681 @Override
1682 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
1683 return null;
1684 }
1685
1686 @Override
1687 public X509Certificate[] getCertificateChain(String alias) {
1688 Log.d(Config.LOGTAG, "getting certificate chain");
1689 try {
1690 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
1691 } catch (Exception e) {
1692 Log.d(Config.LOGTAG, e.getMessage());
1693 return new X509Certificate[0];
1694 }
1695 }
1696
1697 @Override
1698 public String[] getClientAliases(String s, Principal[] principals) {
1699 final String alias = account.getPrivateKeyAlias();
1700 return alias != null ? new String[]{alias} : new String[0];
1701 }
1702
1703 @Override
1704 public String[] getServerAliases(String s, Principal[] principals) {
1705 return new String[0];
1706 }
1707
1708 @Override
1709 public PrivateKey getPrivateKey(String alias) {
1710 try {
1711 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
1712 } catch (Exception e) {
1713 return null;
1714 }
1715 }
1716 }
1717
1718 private class StateChangingError extends Error {
1719 private final Account.State state;
1720
1721 public StateChangingError(Account.State state) {
1722 this.state = state;
1723 }
1724 }
1725
1726 private class StateChangingException extends IOException {
1727 private final Account.State state;
1728
1729 public StateChangingException(Account.State state) {
1730 this.state = state;
1731 }
1732 }
1733
1734 public class Features {
1735 XmppConnection connection;
1736 private boolean carbonsEnabled = false;
1737 private boolean encryptionEnabled = false;
1738 private boolean blockListRequested = false;
1739
1740 public Features(final XmppConnection connection) {
1741 this.connection = connection;
1742 }
1743
1744 private boolean hasDiscoFeature(final Jid server, final String feature) {
1745 synchronized (XmppConnection.this.disco) {
1746 return connection.disco.containsKey(server) &&
1747 connection.disco.get(server).getFeatures().contains(feature);
1748 }
1749 }
1750
1751 public boolean carbons() {
1752 return hasDiscoFeature(Jid.of(account.getServer()), "urn:xmpp:carbons:2");
1753 }
1754
1755 public boolean bookmarksConversion() {
1756 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION) && pepPublishOptions();
1757 }
1758
1759 public boolean avatarConversion() {
1760 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.AVATAR_CONVERSION) && pepPublishOptions();
1761 }
1762
1763 public boolean blocking() {
1764 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.BLOCKING);
1765 }
1766
1767 public boolean spamReporting() {
1768 return hasDiscoFeature(Jid.of(account.getServer()), "urn:xmpp:reporting:reason:spam:0");
1769 }
1770
1771 public boolean flexibleOfflineMessageRetrieval() {
1772 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
1773 }
1774
1775 public boolean register() {
1776 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.REGISTER);
1777 }
1778
1779 public boolean sm() {
1780 return streamId != null
1781 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1782 }
1783
1784 public boolean csi() {
1785 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1786 }
1787
1788 public boolean pep() {
1789 synchronized (XmppConnection.this.disco) {
1790 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1791 return info != null && info.hasIdentity("pubsub", "pep");
1792 }
1793 }
1794
1795 public boolean pepPersistent() {
1796 synchronized (XmppConnection.this.disco) {
1797 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1798 return info != null && info.getFeatures().contains("http://jabber.org/protocol/pubsub#persistent-items");
1799 }
1800 }
1801
1802 public boolean pepPublishOptions() {
1803 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
1804 }
1805
1806 public boolean pepOmemoWhitelisted() {
1807 return hasDiscoFeature(account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
1808 }
1809
1810 public boolean mam() {
1811 return MessageArchiveService.Version.has(getAccountFeatures());
1812 }
1813
1814 public List<String> getAccountFeatures() {
1815 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
1816 return result == null ? Collections.emptyList() : result.getFeatures();
1817 }
1818
1819 public boolean push() {
1820 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
1821 || hasDiscoFeature(Jid.of(account.getServer()), Namespace.PUSH);
1822 }
1823
1824 public boolean rosterVersioning() {
1825 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1826 }
1827
1828 public void setBlockListRequested(boolean value) {
1829 this.blockListRequested = value;
1830 }
1831
1832 public boolean p1S3FileTransfer() {
1833 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.P1_S3_FILE_TRANSFER);
1834 }
1835
1836 public boolean httpUpload(long filesize) {
1837 if (Config.DISABLE_HTTP_UPLOAD) {
1838 return false;
1839 } else {
1840 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1841 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1842 if (items.size() > 0) {
1843 try {
1844 long maxsize = Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1845 if (filesize <= maxsize) {
1846 return true;
1847 } else {
1848 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": http upload is not available for files with size " + filesize + " (max is " + maxsize + ")");
1849 return false;
1850 }
1851 } catch (Exception e) {
1852 return true;
1853 }
1854 }
1855 }
1856 return false;
1857 }
1858 }
1859
1860 public boolean useLegacyHttpUpload() {
1861 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
1862 }
1863
1864 public long getMaxHttpUploadSize() {
1865 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1866 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1867 if (items.size() > 0) {
1868 try {
1869 return Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1870 } catch (Exception e) {
1871 //ignored
1872 }
1873 }
1874 }
1875 return -1;
1876 }
1877
1878 public boolean stanzaIds() {
1879 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
1880 }
1881
1882 public boolean bookmarks2() {
1883 return Config.USE_BOOKMARKS2 || hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS2_COMPAT);
1884 }
1885 }
1886}