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 Log.d(Config.LOGTAG, account.getJid().asBareJid()+": successfully registered new account on server");
116 throw new StateChangingError(Account.State.REGISTRATION_SUCCESSFUL);
117 } else {
118 final List<String> PASSWORD_TOO_WEAK_MSGS = Arrays.asList(
119 "The password is too weak",
120 "Please use a longer password.");
121 Element error = packet.findChild("error");
122 Account.State state = Account.State.REGISTRATION_FAILED;
123 if (error != null) {
124 if (error.hasChild("conflict")) {
125 state = Account.State.REGISTRATION_CONFLICT;
126 } else if (error.hasChild("resource-constraint")
127 && "wait".equals(error.getAttribute("type"))) {
128 state = Account.State.REGISTRATION_PLEASE_WAIT;
129 } else if (error.hasChild("not-acceptable")
130 && PASSWORD_TOO_WEAK_MSGS.contains(error.findChildContent("text"))) {
131 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
132 }
133 }
134 throw new StateChangingError(state);
135 }
136 }
137 };
138 protected final Account account;
139 private final Features features = new Features(this);
140 private final HashMap<Jid, ServiceDiscoveryResult> disco = new HashMap<>();
141 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
142 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
143 private final Set<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new HashSet<>();
144 private final XmppConnectionService mXmppConnectionService;
145 private Socket socket;
146 private XmlReader tagReader;
147 private TagWriter tagWriter = new TagWriter();
148 private boolean shouldAuthenticate = true;
149 private boolean inSmacksSession = false;
150 private boolean isBound = false;
151 private Element streamFeatures;
152 private String streamId = null;
153 private int smVersion = 3;
154 private int stanzasReceived = 0;
155 private int stanzasSent = 0;
156 private long lastPacketReceived = 0;
157 private long lastPingSent = 0;
158 private long lastConnect = 0;
159 private long lastSessionStarted = 0;
160 private long lastDiscoStarted = 0;
161 private boolean isMamPreferenceAlways = false;
162 private AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
163 private AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
164 private AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
165 private AtomicInteger mSmCatchupMessageCounter = new AtomicInteger(0);
166 private boolean mInteractive = false;
167 private int attempt = 0;
168 private OnPresencePacketReceived presenceListener = null;
169 private OnJinglePacketReceived jingleListener = null;
170 private OnIqPacketReceived unregisteredIqListener = null;
171 private OnMessagePacketReceived messageListener = null;
172 private OnStatusChanged statusListener = null;
173 private OnBindListener bindListener = null;
174 private OnMessageAcknowledged acknowledgedListener = null;
175 private SaslMechanism saslMechanism;
176 private URL redirectionUrl = null;
177 private String verifiedHostname = null;
178 private volatile Thread mThread;
179 private CountDownLatch mStreamCountDownLatch;
180
181
182 public XmppConnection(final Account account, final XmppConnectionService service) {
183 this.account = account;
184 this.mXmppConnectionService = service;
185 }
186
187 private static void fixResource(Context context, Account account) {
188 String resource = account.getResource();
189 int fixedPartLength = context.getString(R.string.app_name).length() + 1; //include the trailing dot
190 int randomPartLength = 4; // 3 bytes
191 if (resource != null && resource.length() > fixedPartLength + randomPartLength) {
192 if (validBase64(resource.substring(fixedPartLength, fixedPartLength + randomPartLength))) {
193 account.setResource(resource.substring(0, fixedPartLength + randomPartLength));
194 }
195 }
196 }
197
198 private static boolean validBase64(String input) {
199 try {
200 return Base64.decode(input, Base64.URL_SAFE).length == 3;
201 } catch (Throwable throwable) {
202 return false;
203 }
204 }
205
206 private void changeStatus(final Account.State nextStatus) {
207 synchronized (this) {
208 if (Thread.currentThread().isInterrupted()) {
209 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not changing status to " + nextStatus + " because thread was interrupted");
210 return;
211 }
212 if (account.getStatus() != nextStatus) {
213 if ((nextStatus == Account.State.OFFLINE)
214 && (account.getStatus() != Account.State.CONNECTING)
215 && (account.getStatus() != Account.State.ONLINE)
216 && (account.getStatus() != Account.State.DISABLED)) {
217 return;
218 }
219 if (nextStatus == Account.State.ONLINE) {
220 this.attempt = 0;
221 }
222 account.setStatus(nextStatus);
223 } else {
224 return;
225 }
226 }
227 if (statusListener != null) {
228 statusListener.onStatusChanged(account);
229 }
230 }
231
232 public void prepareNewConnection() {
233 this.lastConnect = SystemClock.elapsedRealtime();
234 this.lastPingSent = SystemClock.elapsedRealtime();
235 this.lastDiscoStarted = Long.MAX_VALUE;
236 this.mWaitingForSmCatchup.set(false);
237 this.changeStatus(Account.State.CONNECTING);
238 }
239
240 public boolean isWaitingForSmCatchup() {
241 return mWaitingForSmCatchup.get();
242 }
243
244 public void incrementSmCatchupMessageCounter() {
245 this.mSmCatchupMessageCounter.incrementAndGet();
246 }
247
248 protected void connect() {
249 if (mXmppConnectionService.areMessagesInitialized()) {
250 mXmppConnectionService.resetSendingToWaiting(account);
251 }
252 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
253 features.encryptionEnabled = false;
254 inSmacksSession = false;
255 isBound = false;
256 this.attempt++;
257 this.verifiedHostname = null; //will be set if user entered hostname is being used or hostname was verified with dnssec
258 try {
259 Socket localSocket;
260 shouldAuthenticate = !account.isOptionSet(Account.OPTION_REGISTER);
261 this.changeStatus(Account.State.CONNECTING);
262 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
263 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
264 if (useTor) {
265 String destination;
266 if (account.getHostname().isEmpty() || account.isOnion()) {
267 destination = account.getServer();
268 } else {
269 destination = account.getHostname();
270 this.verifiedHostname = destination;
271 }
272
273 final int port = account.getPort();
274 final boolean directTls = Resolver.useDirectTls(port);
275
276 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": connect to " + destination + " via Tor. directTls="+directTls);
277 localSocket = SocksSocketFactory.createSocketOverTor(destination, port);
278
279 if (directTls) {
280 localSocket = upgradeSocketToTls(localSocket);
281 features.encryptionEnabled = true;
282 }
283
284 try {
285 startXmpp(localSocket);
286 } catch (InterruptedException e) {
287 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
288 return;
289 } catch (Exception e) {
290 throw new IOException(e.getMessage());
291 }
292 } else {
293 final String domain = account.getJid().getDomain();
294 final List<Resolver.Result> results;
295 final boolean hardcoded = extended && !account.getHostname().isEmpty();
296 if (hardcoded) {
297 results = Resolver.fromHardCoded(account.getHostname(), account.getPort());
298 } else {
299 results = Resolver.resolve(domain);
300 }
301 if (Thread.currentThread().isInterrupted()) {
302 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
303 return;
304 }
305 if (results.size() == 0) {
306 Log.e(Config.LOGTAG,account.getJid().asBareJid()+": Resolver results were empty");
307 return;
308 }
309 final Resolver.Result storedBackupResult;
310 if (hardcoded) {
311 storedBackupResult = null;
312 } else {
313 storedBackupResult = mXmppConnectionService.databaseBackend.findResolverResult(domain);
314 if (storedBackupResult != null && !results.contains(storedBackupResult)) {
315 results.add(storedBackupResult);
316 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": loaded backup resolver result from db: " + storedBackupResult);
317 }
318 }
319 for (Iterator<Resolver.Result> iterator = results.iterator(); iterator.hasNext(); ) {
320 final Resolver.Result result = iterator.next();
321 if (Thread.currentThread().isInterrupted()) {
322 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
323 return;
324 }
325 try {
326 // if tls is true, encryption is implied and must not be started
327 features.encryptionEnabled = result.isDirectTls();
328 verifiedHostname = result.isAuthenticated() ? result.getHostname().toString() : null;
329 Log.d(Config.LOGTAG,"verified hostname "+verifiedHostname);
330 final InetSocketAddress addr;
331 if (result.getIp() != null) {
332 addr = new InetSocketAddress(result.getIp(), result.getPort());
333 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
334 + ": using values from resolver " + (result.getHostname() == null ? "" : result.getHostname().toString()
335 + "/") + result.getIp().getHostAddress() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
336 } else {
337 addr = new InetSocketAddress(IDN.toASCII(result.getHostname().toString()), result.getPort());
338 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
339 + ": using values from resolver "
340 + result.getHostname().toString() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
341 }
342
343 localSocket = new Socket();
344 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
345
346 if (features.encryptionEnabled) {
347 localSocket = upgradeSocketToTls(localSocket);
348 }
349
350 localSocket.setSoTimeout(Config.SOCKET_TIMEOUT * 1000);
351 if (startXmpp(localSocket)) {
352 localSocket.setSoTimeout(0); //reset to 0; once the connection is established we don’t want this
353 if (!hardcoded && !result.equals(storedBackupResult)) {
354 mXmppConnectionService.databaseBackend.saveResolverResult(domain, result);
355 }
356 break; // successfully connected to server that speaks xmpp
357 } else {
358 FileBackend.close(localSocket);
359 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
360 }
361 } catch (final StateChangingException e) {
362 if (!iterator.hasNext()) {
363 throw e;
364 }
365 } catch (InterruptedException e) {
366 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
367 return;
368 } catch (final Throwable e) {
369 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage() + "(" + e.getClass().getName() + ")");
370 if (!iterator.hasNext()) {
371 throw new UnknownHostException();
372 }
373 }
374 }
375 }
376 processStream();
377 } catch (final SecurityException e) {
378 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
379 } catch (final StateChangingException e) {
380 this.changeStatus(e.state);
381 } catch (final UnknownHostException | ConnectException e) {
382 this.changeStatus(Account.State.SERVER_NOT_FOUND);
383 } catch (final SocksSocketFactory.HostNotFoundException e) {
384 this.changeStatus(Account.State.SERVER_NOT_FOUND);
385 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
386 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
387 } catch (final IOException | XmlPullParserException e) {
388 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
389 this.changeStatus(Account.State.OFFLINE);
390 this.attempt = Math.max(0, this.attempt - 1);
391 } finally {
392 if (!Thread.currentThread().isInterrupted()) {
393 forceCloseSocket();
394 } else {
395 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not force closing socket because thread was interrupted");
396 }
397 }
398 }
399
400 /**
401 * Starts xmpp protocol, call after connecting to socket
402 *
403 * @return true if server returns with valid xmpp, false otherwise
404 */
405 private boolean startXmpp(Socket socket) throws Exception {
406 if (Thread.currentThread().isInterrupted()) {
407 throw new InterruptedException();
408 }
409 this.socket = socket;
410 tagReader = new XmlReader();
411 if (tagWriter != null) {
412 tagWriter.forceClose();
413 }
414 tagWriter = new TagWriter();
415 tagWriter.setOutputStream(socket.getOutputStream());
416 tagReader.setInputStream(socket.getInputStream());
417 tagWriter.beginDocument();
418 sendStartStream();
419 final Tag tag = tagReader.readTag();
420 if (Thread.currentThread().isInterrupted()) {
421 throw new InterruptedException();
422 }
423 if (socket instanceof SSLSocket) {
424 SSLSocketHelper.log(account, (SSLSocket) socket);
425 }
426 return tag != null && tag.isStart("stream");
427 }
428
429 private TlsFactoryVerifier getTlsFactoryVerifier() throws NoSuchAlgorithmException, KeyManagementException, IOException {
430 final SSLContext sc = SSLSocketHelper.getSSLContext();
431 MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
432 KeyManager[] keyManager;
433 if (account.getPrivateKeyAlias() != null && account.getPassword().isEmpty()) {
434 keyManager = new KeyManager[]{new MyKeyManager()};
435 } else {
436 keyManager = null;
437 }
438 String domain = account.getJid().getDomain();
439 sc.init(keyManager, new X509TrustManager[]{mInteractive ? trustManager.getInteractive(domain) : trustManager.getNonInteractive(domain)}, mXmppConnectionService.getRNG());
440 final SSLSocketFactory factory = sc.getSocketFactory();
441 final DomainHostnameVerifier verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier(), mInteractive);
442 return new TlsFactoryVerifier(factory, verifier);
443 }
444
445 @Override
446 public void run() {
447 synchronized (this) {
448 this.mThread = Thread.currentThread();
449 if (this.mThread.isInterrupted()) {
450 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": aborting connect because thread was interrupted");
451 return;
452 }
453 forceCloseSocket();
454 }
455 connect();
456 }
457
458 private void processStream() throws XmlPullParserException, IOException {
459 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
460 this.mStreamCountDownLatch = streamCountDownLatch;
461 Tag nextTag = tagReader.readTag();
462 while (nextTag != null && !nextTag.isEnd("stream")) {
463 if (nextTag.isStart("error")) {
464 processStreamError(nextTag);
465 } else if (nextTag.isStart("features")) {
466 processStreamFeatures(nextTag);
467 } else if (nextTag.isStart("proceed")) {
468 switchOverToTls();
469 } else if (nextTag.isStart("success")) {
470 final String challenge = tagReader.readElement(nextTag).getContent();
471 try {
472 saslMechanism.getResponse(challenge);
473 } catch (final SaslMechanism.AuthenticationException e) {
474 Log.e(Config.LOGTAG, String.valueOf(e));
475 throw new StateChangingException(Account.State.UNAUTHORIZED);
476 }
477 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": logged in");
478 account.setKey(Account.PINNED_MECHANISM_KEY,
479 String.valueOf(saslMechanism.getPriority()));
480 tagReader.reset();
481 sendStartStream();
482 final Tag tag = tagReader.readTag();
483 if (tag != null && tag.isStart("stream")) {
484 processStream();
485 } else {
486 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
487 }
488 break;
489 } else if (nextTag.isStart("failure")) {
490 final Element failure = tagReader.readElement(nextTag);
491 if (Namespace.SASL.equals(failure.getNamespace())) {
492 final String text = failure.findChildContent("text");
493 if (failure.hasChild("account-disabled") && text != null) {
494 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
495 if (matcher.find()) {
496 try {
497 URL url = new URL(text.substring(matcher.start(), matcher.end()));
498 if (url.getProtocol().equals("https")) {
499 this.redirectionUrl = url;
500 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
501 }
502 } catch (MalformedURLException e) {
503 throw new StateChangingException(Account.State.UNAUTHORIZED);
504 }
505 }
506 }
507 throw new StateChangingException(Account.State.UNAUTHORIZED);
508 } else if (Namespace.TLS.equals(failure.getNamespace())) {
509 throw new StateChangingException(Account.State.TLS_ERROR);
510 } else {
511 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
512 }
513 } else if (nextTag.isStart("challenge")) {
514 final String challenge = tagReader.readElement(nextTag).getContent();
515 final Element response = new Element("response", Namespace.SASL);
516 try {
517 response.setContent(saslMechanism.getResponse(challenge));
518 } catch (final SaslMechanism.AuthenticationException e) {
519 // TODO: Send auth abort tag.
520 Log.e(Config.LOGTAG, e.toString());
521 }
522 tagWriter.writeElement(response);
523 } else if (nextTag.isStart("enabled")) {
524 final Element enabled = tagReader.readElement(nextTag);
525 if ("true".equals(enabled.getAttribute("resume"))) {
526 this.streamId = enabled.getAttribute("id");
527 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
528 + ": stream management(" + smVersion
529 + ") enabled (resumable)");
530 } else {
531 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
532 + ": stream management(" + smVersion + ") enabled");
533 }
534 this.stanzasReceived = 0;
535 this.inSmacksSession = true;
536 final RequestPacket r = new RequestPacket(smVersion);
537 tagWriter.writeStanzaAsync(r);
538 } else if (nextTag.isStart("resumed")) {
539 this.inSmacksSession = true;
540 this.isBound = true;
541 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
542 lastPacketReceived = SystemClock.elapsedRealtime();
543 final Element resumed = tagReader.readElement(nextTag);
544 final String h = resumed.getAttribute("h");
545 try {
546 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
547 final boolean acknowledgedMessages;
548 synchronized (this.mStanzaQueue) {
549 final int serverCount = Integer.parseInt(h);
550 if (serverCount < stanzasSent) {
551 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
552 + ": session resumed with lost packages");
553 stanzasSent = serverCount;
554 } else {
555 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": session resumed");
556 }
557 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
558 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
559 failedStanzas.add(mStanzaQueue.valueAt(i));
560 }
561 mStanzaQueue.clear();
562 }
563 if (acknowledgedMessages) {
564 mXmppConnectionService.updateConversationUi();
565 }
566 Log.d(Config.LOGTAG, "resending " + failedStanzas.size() + " stanzas");
567 for (AbstractAcknowledgeableStanza packet : failedStanzas) {
568 if (packet instanceof MessagePacket) {
569 MessagePacket message = (MessagePacket) packet;
570 mXmppConnectionService.markMessage(account,
571 message.getTo().asBareJid(),
572 message.getId(),
573 Message.STATUS_UNSEND);
574 }
575 sendPacket(packet);
576 }
577 } catch (final NumberFormatException ignored) {
578 }
579 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
580 changeStatus(Account.State.ONLINE);
581 } else if (nextTag.isStart("r")) {
582 tagReader.readElement(nextTag);
583 if (Config.EXTENDED_SM_LOGGING) {
584 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
585 }
586 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
587 tagWriter.writeStanzaAsync(ack);
588 } else if (nextTag.isStart("a")) {
589 boolean accountUiNeedsRefresh = false;
590 synchronized (NotificationService.CATCHUP_LOCK) {
591 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
592 final int messageCount = mSmCatchupMessageCounter.get();
593 final int pendingIQs = packetCallbacks.size();
594 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": SM catchup complete (messages=" + messageCount + ", pending IQs="+pendingIQs+")");
595 accountUiNeedsRefresh = true;
596 if (messageCount > 0) {
597 mXmppConnectionService.getNotificationService().finishBacklog(true, account);
598 }
599 }
600 }
601 if (accountUiNeedsRefresh) {
602 mXmppConnectionService.updateAccountUi();
603 }
604 final Element ack = tagReader.readElement(nextTag);
605 lastPacketReceived = SystemClock.elapsedRealtime();
606 try {
607 final boolean acknowledgedMessages;
608 synchronized (this.mStanzaQueue) {
609 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
610 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence);
611 }
612 if (acknowledgedMessages) {
613 mXmppConnectionService.updateConversationUi();
614 }
615 } catch (NumberFormatException | NullPointerException e) {
616 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server send ack without sequence number");
617 }
618 } else if (nextTag.isStart("failed")) {
619 Element failed = tagReader.readElement(nextTag);
620 try {
621 final int serverCount = Integer.parseInt(failed.getAttribute("h"));
622 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed but server acknowledged stanza #" + serverCount);
623 final boolean acknowledgedMessages;
624 synchronized (this.mStanzaQueue) {
625 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
626 }
627 if (acknowledgedMessages) {
628 mXmppConnectionService.updateConversationUi();
629 }
630 } catch (NumberFormatException | NullPointerException e) {
631 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
632 }
633 resetStreamId();
634 sendBindRequest();
635 } else if (nextTag.isStart("iq")) {
636 processIq(nextTag);
637 } else if (nextTag.isStart("message")) {
638 processMessage(nextTag);
639 } else if (nextTag.isStart("presence")) {
640 processPresence(nextTag);
641 }
642 nextTag = tagReader.readTag();
643 }
644 if (nextTag != null && nextTag.isEnd("stream")) {
645 streamCountDownLatch.countDown();
646 }
647 }
648
649 private boolean acknowledgeStanzaUpTo(int serverCount) {
650 if (serverCount > stanzasSent) {
651 Log.e(Config.LOGTAG, "server acknowledged more stanzas than we sent. serverCount=" + serverCount + ", ourCount=" + stanzasSent);
652 }
653 boolean acknowledgedMessages = false;
654 for (int i = 0; i < mStanzaQueue.size(); ++i) {
655 if (serverCount >= mStanzaQueue.keyAt(i)) {
656 if (Config.EXTENDED_SM_LOGGING) {
657 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
658 }
659 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
660 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
661 MessagePacket packet = (MessagePacket) stanza;
662 acknowledgedMessages |= acknowledgedListener.onMessageAcknowledged(account, packet.getId());
663 }
664 mStanzaQueue.removeAt(i);
665 i--;
666 }
667 }
668 return acknowledgedMessages;
669 }
670
671 private @NonNull
672 Element processPacket(final Tag currentTag, final int packetType) throws IOException {
673 final Element element;
674 switch (packetType) {
675 case PACKET_IQ:
676 element = new IqPacket();
677 break;
678 case PACKET_MESSAGE:
679 element = new MessagePacket();
680 break;
681 case PACKET_PRESENCE:
682 element = new PresencePacket();
683 break;
684 default:
685 throw new AssertionError("Should never encounter invalid type");
686 }
687 element.setAttributes(currentTag.getAttributes());
688 Tag nextTag = tagReader.readTag();
689 if (nextTag == null) {
690 throw new IOException("interrupted mid tag");
691 }
692 while (!nextTag.isEnd(element.getName())) {
693 if (!nextTag.isNo()) {
694 element.addChild(tagReader.readElement(nextTag));
695 }
696 nextTag = tagReader.readTag();
697 if (nextTag == null) {
698 throw new IOException("interrupted mid tag");
699 }
700 }
701 if (stanzasReceived == Integer.MAX_VALUE) {
702 resetStreamId();
703 throw new IOException("time to restart the session. cant handle >2 billion pcks");
704 }
705 if (inSmacksSession) {
706 ++stanzasReceived;
707 } else if (features.sm()) {
708 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not counting stanza(" + element.getClass().getSimpleName() + "). Not in smacks session.");
709 }
710 lastPacketReceived = SystemClock.elapsedRealtime();
711 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
712 Log.d(Config.LOGTAG, "[background stanza] " + element);
713 }
714 if (element instanceof IqPacket && element.hasChild("jingle", Namespace.JINGLE)) {
715 return JinglePacket.upgrade((IqPacket) element);
716 } else {
717 return element;
718 }
719 }
720
721 private void processIq(final Tag currentTag) throws IOException {
722 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
723 if (!packet.valid()) {
724 Log.e(Config.LOGTAG, "encountered invalid iq from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
725 return;
726 }
727 if (packet instanceof JinglePacket) {
728 if (this.jingleListener != null) {
729 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
730 }
731 } else {
732 OnIqPacketReceived callback = null;
733 synchronized (this.packetCallbacks) {
734 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
735 if (packetCallbackDuple != null) {
736 // Packets to the server should have responses from the server
737 if (packetCallbackDuple.first.toServer(account)) {
738 if (packet.fromServer(account)) {
739 callback = packetCallbackDuple.second;
740 packetCallbacks.remove(packet.getId());
741 } else {
742 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
743 }
744 } else {
745 if (packet.getFrom() != null && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
746 callback = packetCallbackDuple.second;
747 packetCallbacks.remove(packet.getId());
748 } else {
749 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
750 }
751 }
752 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
753 callback = this.unregisteredIqListener;
754 }
755 }
756 if (callback != null) {
757 try {
758 callback.onIqPacketReceived(account, packet);
759 } catch (StateChangingError error) {
760 throw new StateChangingException(error.state);
761 }
762 }
763 }
764 }
765
766 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
767 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
768 if (!packet.valid()) {
769 Log.e(Config.LOGTAG, "encountered invalid message from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
770 return;
771 }
772 this.messageListener.onMessagePacketReceived(account, packet);
773 }
774
775 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
776 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
777 if (!packet.valid()) {
778 Log.e(Config.LOGTAG, "encountered invalid presence from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
779 return;
780 }
781 this.presenceListener.onPresencePacketReceived(account, packet);
782 }
783
784 private void sendStartTLS() throws IOException {
785 final Tag startTLS = Tag.empty("starttls");
786 startTLS.setAttribute("xmlns", Namespace.TLS);
787 tagWriter.writeTag(startTLS);
788 }
789
790 private void switchOverToTls() throws XmlPullParserException, IOException {
791 tagReader.readTag();
792 final Socket socket = this.socket;
793 final SSLSocket sslSocket = upgradeSocketToTls(socket);
794 tagReader.setInputStream(sslSocket.getInputStream());
795 tagWriter.setOutputStream(sslSocket.getOutputStream());
796 sendStartStream();
797 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
798 features.encryptionEnabled = true;
799 final Tag tag = tagReader.readTag();
800 if (tag != null && tag.isStart("stream")) {
801 SSLSocketHelper.log(account, sslSocket);
802 processStream();
803 } else {
804 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
805 }
806 sslSocket.close();
807 }
808
809 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
810 final TlsFactoryVerifier tlsFactoryVerifier;
811 try {
812 tlsFactoryVerifier = getTlsFactoryVerifier();
813 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
814 throw new StateChangingException(Account.State.TLS_ERROR);
815 }
816 final InetAddress address = socket.getInetAddress();
817 final SSLSocket sslSocket = (SSLSocket) tlsFactoryVerifier.factory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
818 SSLSocketHelper.setSecurity(sslSocket);
819 SSLSocketHelper.setHostname(sslSocket, account.getServer());
820 SSLSocketHelper.setApplicationProtocol(sslSocket, "xmpp-client");
821 if (!tlsFactoryVerifier.verifier.verify(account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
822 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate verification failed");
823 FileBackend.close(sslSocket);
824 throw new StateChangingException(Account.State.TLS_ERROR);
825 }
826 return sslSocket;
827 }
828
829 private void processStreamFeatures(final Tag currentTag) throws XmlPullParserException, IOException {
830 this.streamFeatures = tagReader.readElement(currentTag);
831 final boolean isSecure = features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
832 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
833 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
834 sendStartTLS();
835 } else if (this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
836 if (isSecure) {
837 register();
838 } else {
839 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to find STARTTLS for registration process "+ XmlHelper.printElementNames(this.streamFeatures));
840 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
841 }
842 } else if (!this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
843 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
844 } else if (this.streamFeatures.hasChild("mechanisms") && shouldAuthenticate && isSecure) {
845 authenticate();
846 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
847 if (Config.EXTENDED_SM_LOGGING) {
848 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resuming after stanza #" + stanzasReceived);
849 }
850 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
851 this.mSmCatchupMessageCounter.set(0);
852 this.mWaitingForSmCatchup.set(true);
853 this.tagWriter.writeStanzaAsync(resume);
854 } else if (needsBinding) {
855 if (this.streamFeatures.hasChild("bind") && isSecure) {
856 sendBindRequest();
857 } else {
858 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to find bind feature "+ XmlHelper.printElementNames(this.streamFeatures));
859 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
860 }
861 }
862 }
863
864 private void authenticate() throws IOException {
865 final List<String> mechanisms = extractMechanisms(streamFeatures
866 .findChild("mechanisms"));
867 final Element auth = new Element("auth", Namespace.SASL);
868 if (mechanisms.contains("EXTERNAL") && account.getPrivateKeyAlias() != null) {
869 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
870 } else if (mechanisms.contains("SCRAM-SHA-256")) {
871 saslMechanism = new ScramSha256(tagWriter, account, mXmppConnectionService.getRNG());
872 } else if (mechanisms.contains("SCRAM-SHA-1")) {
873 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
874 } else if (mechanisms.contains("PLAIN") && !account.getJid().getDomain().equals("nimbuzz.com")) {
875 saslMechanism = new Plain(tagWriter, account);
876 } else if (mechanisms.contains("DIGEST-MD5")) {
877 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
878 } else if (mechanisms.contains("ANONYMOUS")) {
879 saslMechanism = new Anonymous(tagWriter, account, mXmppConnectionService.getRNG());
880 }
881 if (saslMechanism != null) {
882 final int pinnedMechanism = account.getKeyAsInt(Account.PINNED_MECHANISM_KEY, -1);
883 if (pinnedMechanism > saslMechanism.getPriority()) {
884 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
885 " has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
886 ") than pinned priority (" + pinnedMechanism +
887 "). Possible downgrade attack?");
888 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
889 }
890 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
891 auth.setAttribute("mechanism", saslMechanism.getMechanism());
892 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
893 auth.setContent(saslMechanism.getClientFirstMessage());
894 }
895 tagWriter.writeElement(auth);
896 } else {
897 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to find SASL mechanism "+ saslMechanism.toString());
898 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
899 }
900 }
901
902 private List<String> extractMechanisms(final Element stream) {
903 final ArrayList<String> mechanisms = new ArrayList<>(stream
904 .getChildren().size());
905 for (final Element child : stream.getChildren()) {
906 mechanisms.add(child.getContent());
907 }
908 return mechanisms;
909 }
910
911
912 private void register() {
913 final String preAuth = account.getKey(Account.PRE_AUTH_REGISTRATION_TOKEN);
914 if (preAuth != null && features.invite()) {
915 final IqPacket preAuthRequest = new IqPacket(IqPacket.TYPE.SET);
916 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
917 sendUnmodifiedIqPacket(preAuthRequest, (account, response) -> {
918 if (response.getType() == IqPacket.TYPE.RESULT) {
919 sendRegistryRequest();
920 } else {
921 final Element error = response.getError();
922 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": failed to pre auth. "+error);
923 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
924 }
925 }, true);
926 } else {
927 sendRegistryRequest();
928 }
929 }
930
931 private void sendRegistryRequest() {
932 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
933 register.query(Namespace.REGISTER);
934 register.setTo(Jid.of(account.getServer()));
935 sendUnmodifiedIqPacket(register, (account, packet) -> {
936 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
937 return;
938 }
939 if (packet.getType() == IqPacket.TYPE.ERROR) {
940 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
941 }
942 final Element query = packet.query(Namespace.REGISTER);
943 if (query.hasChild("username") && (query.hasChild("password"))) {
944 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
945 final Element username = new Element("username").setContent(account.getUsername());
946 final Element password = new Element("password").setContent(account.getPassword());
947 register1.query(Namespace.REGISTER).addChild(username);
948 register1.query().addChild(password);
949 register1.setFrom(account.getJid().asBareJid());
950 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
951 } else if (query.hasChild("x", Namespace.DATA)) {
952 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
953 final Element blob = query.findChild("data", "urn:xmpp:bob");
954 final String id = packet.getId();
955 InputStream is;
956 if (blob != null) {
957 try {
958 final String base64Blob = blob.getContent();
959 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
960 is = new ByteArrayInputStream(strBlob);
961 } catch (Exception e) {
962 is = null;
963 }
964 } else {
965 try {
966 Field field = data.getFieldByName("url");
967 URL url = field != null && field.getValue() != null ? new URL(field.getValue()) : null;
968 is = url != null ? url.openStream() : null;
969 } catch (IOException e) {
970 is = null;
971 }
972 }
973
974 if (is != null) {
975 Bitmap captcha = BitmapFactory.decodeStream(is);
976 try {
977 if (mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha)) {
978 return;
979 }
980 } catch (Exception e) {
981 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
982 }
983 }
984 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
985 } else if (query.hasChild("instructions") || query.hasChild("x", Namespace.OOB)) {
986 final String instructions = query.findChildContent("instructions");
987 final Element oob = query.findChild("x", Namespace.OOB);
988 final String url = oob == null ? null : oob.findChildContent("url");
989 if (url != null) {
990 setAccountCreationFailed(url);
991 } else if (instructions != null) {
992 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
993 if (matcher.find()) {
994 setAccountCreationFailed(instructions.substring(matcher.start(), matcher.end()));
995 }
996 }
997 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
998 }
999 }, true);
1000 }
1001
1002 private void setAccountCreationFailed(String url) {
1003 if (url != null) {
1004 try {
1005 this.redirectionUrl = new URL(url);
1006 if (this.redirectionUrl.getProtocol().equals("https")) {
1007 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1008 }
1009 } catch (MalformedURLException e) {
1010 //fall through
1011 }
1012 }
1013 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1014 }
1015
1016 public URL getRedirectionUrl() {
1017 return this.redirectionUrl;
1018 }
1019
1020 public void resetEverything() {
1021 resetAttemptCount(true);
1022 resetStreamId();
1023 clearIqCallbacks();
1024 this.stanzasSent = 0;
1025 mStanzaQueue.clear();
1026 this.redirectionUrl = null;
1027 synchronized (this.disco) {
1028 disco.clear();
1029 }
1030 }
1031
1032 private void sendBindRequest() {
1033 try {
1034 mXmppConnectionService.restoredFromDatabaseLatch.await();
1035 } catch (InterruptedException e) {
1036 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while waiting for DB restore during bind");
1037 return;
1038 }
1039 clearIqCallbacks();
1040 if (account.getJid().isBareJid()) {
1041 account.setResource(this.createNewResource());
1042 } else {
1043 fixResource(mXmppConnectionService, account);
1044 }
1045 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1046 final String resource = Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1047 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1048 this.sendUnmodifiedIqPacket(iq, (account, packet) -> {
1049 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1050 return;
1051 }
1052 final Element bind = packet.findChild("bind");
1053 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1054 isBound = true;
1055 final Element jid = bind.findChild("jid");
1056 if (jid != null && jid.getContent() != null) {
1057 try {
1058 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1059 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1060 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server tried to re-assign domain to " + assignedJid.getDomain());
1061 throw new StateChangingError(Account.State.BIND_FAILURE);
1062 }
1063 if (account.setJid(assignedJid)) {
1064 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": jid changed during bind. updating database");
1065 mXmppConnectionService.databaseBackend.updateAccount(account);
1066 }
1067 if (streamFeatures.hasChild("session")
1068 && !streamFeatures.findChild("session").hasChild("optional")) {
1069 sendStartSession();
1070 } else {
1071 sendPostBindInitialization();
1072 }
1073 return;
1074 } catch (final IllegalArgumentException e) {
1075 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server reported invalid jid (" + jid.getContent() + ") on bind");
1076 }
1077 } else {
1078 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure. (no jid)");
1079 }
1080 } else {
1081 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet.toString());
1082 }
1083 final Element error = packet.findChild("error");
1084 if (packet.getType() == IqPacket.TYPE.ERROR && error != null && error.hasChild("conflict")) {
1085 account.setResource(createNewResource());
1086 }
1087 throw new StateChangingError(Account.State.BIND_FAILURE);
1088 }, true);
1089 }
1090
1091 private void clearIqCallbacks() {
1092 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1093 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1094 synchronized (this.packetCallbacks) {
1095 if (this.packetCallbacks.size() == 0) {
1096 return;
1097 }
1098 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": clearing " + this.packetCallbacks.size() + " iq callbacks");
1099 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
1100 while (iterator.hasNext()) {
1101 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1102 callbacks.add(entry.second);
1103 iterator.remove();
1104 }
1105 }
1106 for (OnIqPacketReceived callback : callbacks) {
1107 try {
1108 callback.onIqPacketReceived(account, failurePacket);
1109 } catch (StateChangingError error) {
1110 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": caught StateChangingError(" + error.state.toString() + ") while clearing callbacks");
1111 //ignore
1112 }
1113 }
1114 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
1115 }
1116
1117 public void sendDiscoTimeout() {
1118 if (mWaitForDisco.compareAndSet(true, false)) {
1119 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1120 finalizeBind();
1121 }
1122 }
1123
1124 private void sendStartSession() {
1125 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": sending legacy session to outdated server");
1126 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1127 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1128 this.sendUnmodifiedIqPacket(startSession, (account, packet) -> {
1129 if (packet.getType() == IqPacket.TYPE.RESULT) {
1130 sendPostBindInitialization();
1131 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1132 throw new StateChangingError(Account.State.SESSION_FAILURE);
1133 }
1134 }, true);
1135 }
1136
1137 private void sendPostBindInitialization() {
1138 smVersion = 0;
1139 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
1140 smVersion = 3;
1141 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
1142 smVersion = 2;
1143 }
1144 if (smVersion != 0) {
1145 synchronized (this.mStanzaQueue) {
1146 final EnablePacket enable = new EnablePacket(smVersion);
1147 tagWriter.writeStanzaAsync(enable);
1148 stanzasSent = 0;
1149 mStanzaQueue.clear();
1150 }
1151 }
1152 features.carbonsEnabled = false;
1153 features.blockListRequested = false;
1154 synchronized (this.disco) {
1155 this.disco.clear();
1156 }
1157 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1158 mPendingServiceDiscoveries.set(0);
1159 if (smVersion == 0 || Patches.DISCO_EXCEPTIONS.contains(account.getJid().getDomain())) {
1160 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": do not wait for service discovery");
1161 mWaitForDisco.set(false);
1162 } else {
1163 mWaitForDisco.set(true);
1164 }
1165 lastDiscoStarted = SystemClock.elapsedRealtime();
1166 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1167 Element caps = streamFeatures.findChild("c");
1168 final String hash = caps == null ? null : caps.getAttribute("hash");
1169 final String ver = caps == null ? null : caps.getAttribute("ver");
1170 ServiceDiscoveryResult discoveryResult = null;
1171 if (hash != null && ver != null) {
1172 discoveryResult = mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1173 }
1174 final boolean requestDiscoItemsFirst = !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1175 if (requestDiscoItemsFirst) {
1176 sendServiceDiscoveryItems(Jid.of(account.getServer()));
1177 }
1178 if (discoveryResult == null) {
1179 sendServiceDiscoveryInfo(Jid.of(account.getServer()));
1180 } else {
1181 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1182 disco.put(Jid.of(account.getServer()), discoveryResult);
1183 }
1184 discoverMamPreferences();
1185 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1186 if (!requestDiscoItemsFirst) {
1187 sendServiceDiscoveryItems(Jid.of(account.getServer()));
1188 }
1189
1190 if (!mWaitForDisco.get()) {
1191 finalizeBind();
1192 }
1193 this.lastSessionStarted = SystemClock.elapsedRealtime();
1194 }
1195
1196 private void sendServiceDiscoveryInfo(final Jid jid) {
1197 mPendingServiceDiscoveries.incrementAndGet();
1198 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1199 iq.setTo(jid);
1200 iq.query("http://jabber.org/protocol/disco#info");
1201 this.sendIqPacket(iq, (account, packet) -> {
1202 if (packet.getType() == IqPacket.TYPE.RESULT) {
1203 boolean advancedStreamFeaturesLoaded;
1204 synchronized (XmppConnection.this.disco) {
1205 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1206 if (jid.equals(Jid.of(account.getServer()))) {
1207 mXmppConnectionService.databaseBackend.insertDiscoveryResult(result);
1208 }
1209 disco.put(jid, result);
1210 advancedStreamFeaturesLoaded = disco.containsKey(Jid.of(account.getServer()))
1211 && disco.containsKey(account.getJid().asBareJid());
1212 }
1213 if (advancedStreamFeaturesLoaded && (jid.equals(Jid.of(account.getServer())) || jid.equals(account.getJid().asBareJid()))) {
1214 enableAdvancedStreamFeatures();
1215 }
1216 } else if (packet.getType() == IqPacket.TYPE.ERROR) {
1217 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco info for " + jid.toString());
1218 final boolean serverOrAccount = jid.equals(Jid.of(account.getServer())) || jid.equals(account.getJid().asBareJid());
1219 final boolean advancedStreamFeaturesLoaded;
1220 if (serverOrAccount) {
1221 synchronized (XmppConnection.this.disco) {
1222 disco.put(jid, ServiceDiscoveryResult.empty());
1223 advancedStreamFeaturesLoaded = disco.containsKey(Jid.of(account.getServer())) && disco.containsKey(account.getJid().asBareJid());
1224 }
1225 } else {
1226 advancedStreamFeaturesLoaded = false;
1227 }
1228 if (advancedStreamFeaturesLoaded) {
1229 enableAdvancedStreamFeatures();
1230 }
1231 }
1232 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1233 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1234 && mWaitForDisco.compareAndSet(true, false)) {
1235 finalizeBind();
1236 }
1237 }
1238 });
1239 }
1240
1241 private void discoverMamPreferences() {
1242 IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1243 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1244 sendIqPacket(request, (account, response) -> {
1245 if (response.getType() == IqPacket.TYPE.RESULT) {
1246 Element prefs = response.findChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1247 isMamPreferenceAlways = "always".equals(prefs == null ? null : prefs.getAttribute("default"));
1248 }
1249 });
1250 }
1251
1252 public boolean isMamPreferenceAlways() {
1253 return isMamPreferenceAlways;
1254 }
1255
1256 private void finalizeBind() {
1257 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
1258 if (bindListener != null) {
1259 bindListener.onBind(account);
1260 }
1261 changeStatus(Account.State.ONLINE);
1262 }
1263
1264 private void enableAdvancedStreamFeatures() {
1265 if (getFeatures().blocking() && !features.blockListRequested) {
1266 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
1267 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1268 }
1269 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1270 listener.onAdvancedStreamFeaturesAvailable(account);
1271 }
1272 if (getFeatures().carbons() && !features.carbonsEnabled) {
1273 sendEnableCarbons();
1274 }
1275 }
1276
1277 private void sendServiceDiscoveryItems(final Jid server) {
1278 mPendingServiceDiscoveries.incrementAndGet();
1279 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1280 iq.setTo(Jid.ofDomain(server.getDomain()));
1281 iq.query("http://jabber.org/protocol/disco#items");
1282 this.sendIqPacket(iq, (account, packet) -> {
1283 if (packet.getType() == IqPacket.TYPE.RESULT) {
1284 HashSet<Jid> items = new HashSet<Jid>();
1285 final List<Element> elements = packet.query().getChildren();
1286 for (final Element element : elements) {
1287 if (element.getName().equals("item")) {
1288 final Jid jid = InvalidJid.getNullForInvalid(element.getAttributeAsJid("jid"));
1289 if (jid != null && !jid.equals(Jid.of(account.getServer()))) {
1290 items.add(jid);
1291 }
1292 }
1293 }
1294 for (Jid jid : items) {
1295 sendServiceDiscoveryInfo(jid);
1296 }
1297 } else {
1298 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco items of " + server);
1299 }
1300 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1301 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1302 && mWaitForDisco.compareAndSet(true, false)) {
1303 finalizeBind();
1304 }
1305 }
1306 });
1307 }
1308
1309 private void sendEnableCarbons() {
1310 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1311 iq.addChild("enable", "urn:xmpp:carbons:2");
1312 this.sendIqPacket(iq, new OnIqPacketReceived() {
1313
1314 @Override
1315 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1316 if (!packet.hasChild("error")) {
1317 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1318 + ": successfully enabled carbons");
1319 features.carbonsEnabled = true;
1320 } else {
1321 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1322 + ": error enableing carbons " + packet.toString());
1323 }
1324 }
1325 });
1326 }
1327
1328 private void processStreamError(final Tag currentTag) throws XmlPullParserException, IOException {
1329 final Element streamError = tagReader.readElement(currentTag);
1330 if (streamError == null) {
1331 return;
1332 }
1333 if (streamError.hasChild("conflict")) {
1334 account.setResource(createNewResource());
1335 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": switching resource due to conflict (" + account.getResource() + ")");
1336 throw new IOException();
1337 } else if (streamError.hasChild("host-unknown")) {
1338 throw new StateChangingException(Account.State.HOST_UNKNOWN);
1339 } else if (streamError.hasChild("policy-violation")) {
1340 this.lastConnect = SystemClock.elapsedRealtime();
1341 final String text = streamError.findChildContent("text");
1342 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": policy violation. "+text);
1343 throw new StateChangingException(Account.State.POLICY_VIOLATION);
1344 } else {
1345 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError.toString());
1346 throw new StateChangingException(Account.State.STREAM_ERROR);
1347 }
1348 }
1349
1350 private void sendStartStream() throws IOException {
1351 final Tag stream = Tag.start("stream:stream");
1352 stream.setAttribute("to", account.getServer());
1353 stream.setAttribute("version", "1.0");
1354 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
1355 stream.setAttribute("xmlns", "jabber:client");
1356 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1357 tagWriter.writeTag(stream);
1358 }
1359
1360 private String createNewResource() {
1361 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
1362 }
1363
1364 private String nextRandomId() {
1365 return nextRandomId(false);
1366 }
1367
1368 private String nextRandomId(boolean s) {
1369 return CryptoHelper.random(s ? 3 : 9, mXmppConnectionService.getRNG());
1370 }
1371
1372 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1373 packet.setFrom(account.getJid());
1374 return this.sendUnmodifiedIqPacket(packet, callback, false);
1375 }
1376
1377 public synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
1378 if (packet.getId() == null) {
1379 packet.setAttribute("id", nextRandomId());
1380 }
1381 if (callback != null) {
1382 synchronized (this.packetCallbacks) {
1383 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1384 }
1385 }
1386 this.sendPacket(packet, force);
1387 return packet.getId();
1388 }
1389
1390 public void sendMessagePacket(final MessagePacket packet) {
1391 this.sendPacket(packet);
1392 }
1393
1394 public void sendPresencePacket(final PresencePacket packet) {
1395 this.sendPacket(packet);
1396 }
1397
1398 private synchronized void sendPacket(final AbstractStanza packet) {
1399 sendPacket(packet, false);
1400 }
1401
1402 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
1403 if (stanzasSent == Integer.MAX_VALUE) {
1404 resetStreamId();
1405 disconnect(true);
1406 return;
1407 }
1408 synchronized (this.mStanzaQueue) {
1409 if (force || isBound) {
1410 tagWriter.writeStanzaAsync(packet);
1411 } else {
1412 Log.d(Config.LOGTAG, account.getJid().asBareJid() + " do not write stanza to unbound stream " + packet.toString());
1413 }
1414 if (packet instanceof AbstractAcknowledgeableStanza) {
1415 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1416
1417 if (this.mStanzaQueue.size() != 0) {
1418 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
1419 if (currentHighestKey != stanzasSent) {
1420 throw new AssertionError("Stanza count messed up");
1421 }
1422 }
1423
1424 ++stanzasSent;
1425 this.mStanzaQueue.append(stanzasSent, stanza);
1426 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
1427 if (Config.EXTENDED_SM_LOGGING) {
1428 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1429 }
1430 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1431 }
1432 }
1433 }
1434 }
1435
1436 public void sendPing() {
1437 if (!r()) {
1438 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1439 iq.setFrom(account.getJid());
1440 iq.addChild("ping", Namespace.PING);
1441 this.sendIqPacket(iq, null);
1442 }
1443 this.lastPingSent = SystemClock.elapsedRealtime();
1444 }
1445
1446 public void setOnMessagePacketReceivedListener(
1447 final OnMessagePacketReceived listener) {
1448 this.messageListener = listener;
1449 }
1450
1451 public void setOnUnregisteredIqPacketReceivedListener(
1452 final OnIqPacketReceived listener) {
1453 this.unregisteredIqListener = listener;
1454 }
1455
1456 public void setOnPresencePacketReceivedListener(
1457 final OnPresencePacketReceived listener) {
1458 this.presenceListener = listener;
1459 }
1460
1461 public void setOnJinglePacketReceivedListener(
1462 final OnJinglePacketReceived listener) {
1463 this.jingleListener = listener;
1464 }
1465
1466 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1467 this.statusListener = listener;
1468 }
1469
1470 public void setOnBindListener(final OnBindListener listener) {
1471 this.bindListener = listener;
1472 }
1473
1474 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1475 this.acknowledgedListener = listener;
1476 }
1477
1478 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1479 this.advancedStreamFeaturesLoadedListeners.add(listener);
1480 }
1481
1482 private void forceCloseSocket() {
1483 FileBackend.close(this.socket);
1484 FileBackend.close(this.tagReader);
1485 }
1486
1487 public void interrupt() {
1488 if (this.mThread != null) {
1489 this.mThread.interrupt();
1490 }
1491 }
1492
1493 public void disconnect(final boolean force) {
1494 interrupt();
1495 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
1496 if (force) {
1497 forceCloseSocket();
1498 } else {
1499 final TagWriter currentTagWriter = this.tagWriter;
1500 if (currentTagWriter.isActive()) {
1501 currentTagWriter.finish();
1502 final Socket currentSocket = this.socket;
1503 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
1504 try {
1505 currentTagWriter.await(1, TimeUnit.SECONDS);
1506 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
1507 currentTagWriter.writeTag(Tag.end("stream:stream"));
1508 if (streamCountDownLatch != null) {
1509 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
1510 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote ended stream");
1511 } else {
1512 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote has not closed socket. force closing");
1513 }
1514 }
1515 } catch (InterruptedException e) {
1516 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while gracefully closing stream");
1517 } catch (final IOException e) {
1518 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": io exception during disconnect (" + e.getMessage() + ")");
1519 } finally {
1520 FileBackend.close(currentSocket);
1521 }
1522 } else {
1523 forceCloseSocket();
1524 }
1525 }
1526 }
1527
1528 private void resetStreamId() {
1529 this.streamId = null;
1530 }
1531
1532 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
1533 synchronized (this.disco) {
1534 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
1535 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
1536 if (cursor.getValue().getFeatures().contains(feature)) {
1537 items.add(cursor);
1538 }
1539 }
1540 return items;
1541 }
1542 }
1543
1544 public Jid findDiscoItemByFeature(final String feature) {
1545 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
1546 if (items.size() >= 1) {
1547 return items.get(0).getKey();
1548 }
1549 return null;
1550 }
1551
1552 public boolean r() {
1553 if (getFeatures().sm()) {
1554 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1555 return true;
1556 } else {
1557 return false;
1558 }
1559 }
1560
1561 public List<String> getMucServersWithholdAccount() {
1562 List<String> servers = getMucServers();
1563 servers.remove(account.getServer());
1564 return servers;
1565 }
1566
1567 public List<String> getMucServers() {
1568 List<String> servers = new ArrayList<>();
1569 synchronized (this.disco) {
1570 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
1571 final ServiceDiscoveryResult value = cursor.getValue();
1572 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
1573 && value.hasIdentity("conference", "text")
1574 && !value.getFeatures().contains("jabber:iq:gateway")
1575 && !value.hasIdentity("conference", "irc")) {
1576 servers.add(cursor.getKey().toString());
1577 }
1578 }
1579 }
1580 return servers;
1581 }
1582
1583 public String getMucServer() {
1584 List<String> servers = getMucServers();
1585 return servers.size() > 0 ? servers.get(0) : null;
1586 }
1587
1588 public int getTimeToNextAttempt() {
1589 final int additionalTime = account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
1590 final int interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
1591 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1592 return interval - secondsSinceLast;
1593 }
1594
1595 public int getAttempt() {
1596 return this.attempt;
1597 }
1598
1599 public Features getFeatures() {
1600 return this.features;
1601 }
1602
1603 public long getLastSessionEstablished() {
1604 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1605 return System.currentTimeMillis() - diff;
1606 }
1607
1608 public long getLastConnect() {
1609 return this.lastConnect;
1610 }
1611
1612 public long getLastPingSent() {
1613 return this.lastPingSent;
1614 }
1615
1616 public long getLastDiscoStarted() {
1617 return this.lastDiscoStarted;
1618 }
1619
1620 public long getLastPacketReceived() {
1621 return this.lastPacketReceived;
1622 }
1623
1624 public void sendActive() {
1625 this.sendPacket(new ActivePacket());
1626 }
1627
1628 public void sendInactive() {
1629 this.sendPacket(new InactivePacket());
1630 }
1631
1632 public void resetAttemptCount(boolean resetConnectTime) {
1633 this.attempt = 0;
1634 if (resetConnectTime) {
1635 this.lastConnect = 0;
1636 }
1637 }
1638
1639 public void setInteractive(boolean interactive) {
1640 this.mInteractive = interactive;
1641 }
1642
1643 public Identity getServerIdentity() {
1644 synchronized (this.disco) {
1645 ServiceDiscoveryResult result = disco.get(Jid.ofDomain(account.getJid().getDomain()));
1646 if (result == null) {
1647 return Identity.UNKNOWN;
1648 }
1649 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
1650 if (id.getType().equals("im") && id.getCategory().equals("server") && id.getName() != null) {
1651 switch (id.getName()) {
1652 case "Prosody":
1653 return Identity.PROSODY;
1654 case "ejabberd":
1655 return Identity.EJABBERD;
1656 case "Slack-XMPP":
1657 return Identity.SLACK;
1658 }
1659 }
1660 }
1661 }
1662 return Identity.UNKNOWN;
1663 }
1664
1665 private IqGenerator getIqGenerator() {
1666 return mXmppConnectionService.getIqGenerator();
1667 }
1668
1669 public enum Identity {
1670 FACEBOOK,
1671 SLACK,
1672 EJABBERD,
1673 PROSODY,
1674 NIMBUZZ,
1675 UNKNOWN
1676 }
1677
1678 private static class TlsFactoryVerifier {
1679 private final SSLSocketFactory factory;
1680 private final DomainHostnameVerifier verifier;
1681
1682 TlsFactoryVerifier(final SSLSocketFactory factory, final DomainHostnameVerifier verifier) throws IOException {
1683 this.factory = factory;
1684 this.verifier = verifier;
1685 if (factory == null || verifier == null) {
1686 throw new IOException("could not setup ssl");
1687 }
1688 }
1689 }
1690
1691 private class MyKeyManager implements X509KeyManager {
1692 @Override
1693 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
1694 return account.getPrivateKeyAlias();
1695 }
1696
1697 @Override
1698 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
1699 return null;
1700 }
1701
1702 @Override
1703 public X509Certificate[] getCertificateChain(String alias) {
1704 Log.d(Config.LOGTAG, "getting certificate chain");
1705 try {
1706 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
1707 } catch (Exception e) {
1708 Log.d(Config.LOGTAG, e.getMessage());
1709 return new X509Certificate[0];
1710 }
1711 }
1712
1713 @Override
1714 public String[] getClientAliases(String s, Principal[] principals) {
1715 final String alias = account.getPrivateKeyAlias();
1716 return alias != null ? new String[]{alias} : new String[0];
1717 }
1718
1719 @Override
1720 public String[] getServerAliases(String s, Principal[] principals) {
1721 return new String[0];
1722 }
1723
1724 @Override
1725 public PrivateKey getPrivateKey(String alias) {
1726 try {
1727 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
1728 } catch (Exception e) {
1729 return null;
1730 }
1731 }
1732 }
1733
1734 private class StateChangingError extends Error {
1735 private final Account.State state;
1736
1737 public StateChangingError(Account.State state) {
1738 this.state = state;
1739 }
1740 }
1741
1742 private class StateChangingException extends IOException {
1743 private final Account.State state;
1744
1745 public StateChangingException(Account.State state) {
1746 this.state = state;
1747 }
1748 }
1749
1750 public class Features {
1751 XmppConnection connection;
1752 private boolean carbonsEnabled = false;
1753 private boolean encryptionEnabled = false;
1754 private boolean blockListRequested = false;
1755
1756 public Features(final XmppConnection connection) {
1757 this.connection = connection;
1758 }
1759
1760 private boolean hasDiscoFeature(final Jid server, final String feature) {
1761 synchronized (XmppConnection.this.disco) {
1762 return connection.disco.containsKey(server) &&
1763 connection.disco.get(server).getFeatures().contains(feature);
1764 }
1765 }
1766
1767 public boolean carbons() {
1768 return hasDiscoFeature(Jid.of(account.getServer()), "urn:xmpp:carbons:2");
1769 }
1770
1771 public boolean bookmarksConversion() {
1772 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION) && pepPublishOptions();
1773 }
1774
1775 public boolean avatarConversion() {
1776 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.AVATAR_CONVERSION) && pepPublishOptions();
1777 }
1778
1779 public boolean blocking() {
1780 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.BLOCKING);
1781 }
1782
1783 public boolean spamReporting() {
1784 return hasDiscoFeature(Jid.of(account.getServer()), "urn:xmpp:reporting:reason:spam:0");
1785 }
1786
1787 public boolean flexibleOfflineMessageRetrieval() {
1788 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
1789 }
1790
1791 public boolean register() {
1792 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.REGISTER);
1793 }
1794
1795 public boolean invite() {
1796 return connection.streamFeatures != null && connection.streamFeatures.hasChild("register", Namespace.INVITE);
1797 }
1798
1799 public boolean sm() {
1800 return streamId != null
1801 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1802 }
1803
1804 public boolean csi() {
1805 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1806 }
1807
1808 public boolean pep() {
1809 synchronized (XmppConnection.this.disco) {
1810 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1811 return info != null && info.hasIdentity("pubsub", "pep");
1812 }
1813 }
1814
1815 public boolean pepPersistent() {
1816 synchronized (XmppConnection.this.disco) {
1817 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1818 return info != null && info.getFeatures().contains("http://jabber.org/protocol/pubsub#persistent-items");
1819 }
1820 }
1821
1822 public boolean pepPublishOptions() {
1823 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
1824 }
1825
1826 public boolean pepOmemoWhitelisted() {
1827 return hasDiscoFeature(account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
1828 }
1829
1830 public boolean mam() {
1831 return MessageArchiveService.Version.has(getAccountFeatures());
1832 }
1833
1834 public List<String> getAccountFeatures() {
1835 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
1836 return result == null ? Collections.emptyList() : result.getFeatures();
1837 }
1838
1839 public boolean push() {
1840 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
1841 || hasDiscoFeature(Jid.of(account.getServer()), Namespace.PUSH);
1842 }
1843
1844 public boolean rosterVersioning() {
1845 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1846 }
1847
1848 public void setBlockListRequested(boolean value) {
1849 this.blockListRequested = value;
1850 }
1851
1852 public boolean p1S3FileTransfer() {
1853 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.P1_S3_FILE_TRANSFER);
1854 }
1855
1856 public boolean httpUpload(long filesize) {
1857 if (Config.DISABLE_HTTP_UPLOAD) {
1858 return false;
1859 } else {
1860 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1861 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1862 if (items.size() > 0) {
1863 try {
1864 long maxsize = Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1865 if (filesize <= maxsize) {
1866 return true;
1867 } else {
1868 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": http upload is not available for files with size " + filesize + " (max is " + maxsize + ")");
1869 return false;
1870 }
1871 } catch (Exception e) {
1872 return true;
1873 }
1874 }
1875 }
1876 return false;
1877 }
1878 }
1879
1880 public boolean useLegacyHttpUpload() {
1881 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
1882 }
1883
1884 public long getMaxHttpUploadSize() {
1885 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1886 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1887 if (items.size() > 0) {
1888 try {
1889 return Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1890 } catch (Exception e) {
1891 //ignored
1892 }
1893 }
1894 }
1895 return -1;
1896 }
1897
1898 public boolean stanzaIds() {
1899 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
1900 }
1901
1902 public boolean bookmarks2() {
1903 return Config.USE_BOOKMARKS2 /* || hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS2_COMPAT)*/;
1904 }
1905 }
1906}