1package eu.siacs.conversations.xmpp;
2
3import android.content.Context;
4import android.graphics.Bitmap;
5import android.graphics.BitmapFactory;
6import android.os.SystemClock;
7import android.security.KeyChain;
8import android.support.annotation.NonNull;
9import android.util.Base64;
10import android.util.Log;
11import android.util.Pair;
12import android.util.SparseArray;
13
14import org.xmlpull.v1.XmlPullParserException;
15
16import java.io.ByteArrayInputStream;
17import java.io.IOException;
18import java.io.InputStream;
19import java.net.ConnectException;
20import java.net.IDN;
21import java.net.InetAddress;
22import java.net.InetSocketAddress;
23import java.net.MalformedURLException;
24import java.net.Socket;
25import java.net.URL;
26import java.net.UnknownHostException;
27import java.security.KeyManagementException;
28import java.security.NoSuchAlgorithmException;
29import java.security.Principal;
30import java.security.PrivateKey;
31import java.security.cert.X509Certificate;
32import java.util.ArrayList;
33import java.util.Arrays;
34import java.util.Collections;
35import java.util.HashMap;
36import java.util.HashSet;
37import java.util.Hashtable;
38import java.util.Iterator;
39import java.util.List;
40import java.util.Map.Entry;
41import java.util.Set;
42import java.util.concurrent.CountDownLatch;
43import java.util.concurrent.TimeUnit;
44import java.util.concurrent.atomic.AtomicBoolean;
45import java.util.concurrent.atomic.AtomicInteger;
46import java.util.regex.Matcher;
47
48import javax.net.ssl.KeyManager;
49import javax.net.ssl.SSLContext;
50import javax.net.ssl.SSLSocket;
51import javax.net.ssl.SSLSocketFactory;
52import javax.net.ssl.X509KeyManager;
53import javax.net.ssl.X509TrustManager;
54
55import eu.siacs.conversations.Config;
56import eu.siacs.conversations.R;
57import eu.siacs.conversations.crypto.DomainHostnameVerifier;
58import eu.siacs.conversations.crypto.XmppDomainVerifier;
59import eu.siacs.conversations.crypto.axolotl.AxolotlService;
60import eu.siacs.conversations.crypto.sasl.Anonymous;
61import eu.siacs.conversations.crypto.sasl.DigestMd5;
62import eu.siacs.conversations.crypto.sasl.External;
63import eu.siacs.conversations.crypto.sasl.Plain;
64import eu.siacs.conversations.crypto.sasl.SaslMechanism;
65import eu.siacs.conversations.crypto.sasl.ScramSha1;
66import eu.siacs.conversations.crypto.sasl.ScramSha256;
67import eu.siacs.conversations.entities.Account;
68import eu.siacs.conversations.entities.Message;
69import eu.siacs.conversations.entities.ServiceDiscoveryResult;
70import eu.siacs.conversations.generator.IqGenerator;
71import eu.siacs.conversations.persistance.FileBackend;
72import eu.siacs.conversations.services.MemorizingTrustManager;
73import eu.siacs.conversations.services.MessageArchiveService;
74import eu.siacs.conversations.services.NotificationService;
75import eu.siacs.conversations.services.XmppConnectionService;
76import eu.siacs.conversations.utils.CryptoHelper;
77import eu.siacs.conversations.utils.Patterns;
78import eu.siacs.conversations.utils.Resolver;
79import eu.siacs.conversations.utils.SSLSocketHelper;
80import eu.siacs.conversations.utils.SocksSocketFactory;
81import eu.siacs.conversations.utils.XmlHelper;
82import eu.siacs.conversations.xml.Element;
83import eu.siacs.conversations.xml.LocalizedContent;
84import eu.siacs.conversations.xml.Namespace;
85import eu.siacs.conversations.xml.Tag;
86import eu.siacs.conversations.xml.TagWriter;
87import eu.siacs.conversations.xml.XmlReader;
88import eu.siacs.conversations.xmpp.forms.Data;
89import eu.siacs.conversations.xmpp.forms.Field;
90import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
91import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
92import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
93import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
94import eu.siacs.conversations.xmpp.stanzas.IqPacket;
95import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
96import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
97import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
98import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
99import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
100import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
101import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
102import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
103
104public class XmppConnection implements Runnable {
105
106 private static final int PACKET_IQ = 0;
107 private static final int PACKET_MESSAGE = 1;
108 private static final int PACKET_PRESENCE = 2;
109 public final OnIqPacketReceived registrationResponseListener = new OnIqPacketReceived() {
110 @Override
111 public void onIqPacketReceived(Account account, IqPacket packet) {
112 if (packet.getType() == IqPacket.TYPE.RESULT) {
113 account.setOption(Account.OPTION_REGISTER, false);
114 Log.d(Config.LOGTAG, account.getJid().asBareJid()+": successfully registered new account on server");
115 throw new StateChangingError(Account.State.REGISTRATION_SUCCESSFUL);
116 } else {
117 final List<String> PASSWORD_TOO_WEAK_MSGS = Arrays.asList(
118 "The password is too weak",
119 "Please use a longer password.");
120 Element error = packet.findChild("error");
121 Account.State state = Account.State.REGISTRATION_FAILED;
122 if (error != null) {
123 if (error.hasChild("conflict")) {
124 state = Account.State.REGISTRATION_CONFLICT;
125 } else if (error.hasChild("resource-constraint")
126 && "wait".equals(error.getAttribute("type"))) {
127 state = Account.State.REGISTRATION_PLEASE_WAIT;
128 } else if (error.hasChild("not-acceptable")
129 && PASSWORD_TOO_WEAK_MSGS.contains(error.findChildContent("text"))) {
130 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
131 }
132 }
133 throw new StateChangingError(state);
134 }
135 }
136 };
137 protected final Account account;
138 private final Features features = new Features(this);
139 private final HashMap<Jid, ServiceDiscoveryResult> disco = new HashMap<>();
140 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
141 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
142 private final Set<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new HashSet<>();
143 private final XmppConnectionService mXmppConnectionService;
144 private Socket socket;
145 private XmlReader tagReader;
146 private TagWriter tagWriter = new TagWriter();
147 private boolean shouldAuthenticate = true;
148 private boolean inSmacksSession = false;
149 private boolean isBound = false;
150 private Element streamFeatures;
151 private String streamId = null;
152 private int smVersion = 3;
153 private int stanzasReceived = 0;
154 private int stanzasSent = 0;
155 private long lastPacketReceived = 0;
156 private long lastPingSent = 0;
157 private long lastConnect = 0;
158 private long lastSessionStarted = 0;
159 private long lastDiscoStarted = 0;
160 private boolean isMamPreferenceAlways = false;
161 private AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
162 private AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
163 private AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
164 private AtomicInteger mSmCatchupMessageCounter = new AtomicInteger(0);
165 private boolean mInteractive = false;
166 private int attempt = 0;
167 private OnPresencePacketReceived presenceListener = null;
168 private OnJinglePacketReceived jingleListener = null;
169 private OnIqPacketReceived unregisteredIqListener = null;
170 private OnMessagePacketReceived messageListener = null;
171 private OnStatusChanged statusListener = null;
172 private OnBindListener bindListener = null;
173 private OnMessageAcknowledged acknowledgedListener = null;
174 private SaslMechanism saslMechanism;
175 private URL redirectionUrl = null;
176 private String verifiedHostname = null;
177 private volatile Thread mThread;
178 private CountDownLatch mStreamCountDownLatch;
179
180
181 public XmppConnection(final Account account, final XmppConnectionService service) {
182 this.account = account;
183 this.mXmppConnectionService = service;
184 }
185
186 private static void fixResource(Context context, Account account) {
187 String resource = account.getResource();
188 int fixedPartLength = context.getString(R.string.app_name).length() + 1; //include the trailing dot
189 int randomPartLength = 4; // 3 bytes
190 if (resource != null && resource.length() > fixedPartLength + randomPartLength) {
191 if (validBase64(resource.substring(fixedPartLength, fixedPartLength + randomPartLength))) {
192 account.setResource(resource.substring(0, fixedPartLength + randomPartLength));
193 }
194 }
195 }
196
197 private static boolean validBase64(String input) {
198 try {
199 return Base64.decode(input, Base64.URL_SAFE).length == 3;
200 } catch (Throwable throwable) {
201 return false;
202 }
203 }
204
205 private void changeStatus(final Account.State nextStatus) {
206 synchronized (this) {
207 if (Thread.currentThread().isInterrupted()) {
208 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not changing status to " + nextStatus + " because thread was interrupted");
209 return;
210 }
211 if (account.getStatus() != nextStatus) {
212 if ((nextStatus == Account.State.OFFLINE)
213 && (account.getStatus() != Account.State.CONNECTING)
214 && (account.getStatus() != Account.State.ONLINE)
215 && (account.getStatus() != Account.State.DISABLED)) {
216 return;
217 }
218 if (nextStatus == Account.State.ONLINE) {
219 this.attempt = 0;
220 }
221 account.setStatus(nextStatus);
222 } else {
223 return;
224 }
225 }
226 if (statusListener != null) {
227 statusListener.onStatusChanged(account);
228 }
229 }
230
231 public void prepareNewConnection() {
232 this.lastConnect = SystemClock.elapsedRealtime();
233 this.lastPingSent = SystemClock.elapsedRealtime();
234 this.lastDiscoStarted = Long.MAX_VALUE;
235 this.mWaitingForSmCatchup.set(false);
236 this.changeStatus(Account.State.CONNECTING);
237 }
238
239 public boolean isWaitingForSmCatchup() {
240 return mWaitingForSmCatchup.get();
241 }
242
243 public void incrementSmCatchupMessageCounter() {
244 this.mSmCatchupMessageCounter.incrementAndGet();
245 }
246
247 protected void connect() {
248 if (mXmppConnectionService.areMessagesInitialized()) {
249 mXmppConnectionService.resetSendingToWaiting(account);
250 }
251 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
252 features.encryptionEnabled = false;
253 inSmacksSession = false;
254 isBound = false;
255 this.attempt++;
256 this.verifiedHostname = null; //will be set if user entered hostname is being used or hostname was verified with dnssec
257 try {
258 Socket localSocket;
259 shouldAuthenticate = !account.isOptionSet(Account.OPTION_REGISTER);
260 this.changeStatus(Account.State.CONNECTING);
261 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
262 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
263 if (useTor) {
264 String destination;
265 if (account.getHostname().isEmpty() || account.isOnion()) {
266 destination = account.getServer();
267 } else {
268 destination = account.getHostname();
269 this.verifiedHostname = destination;
270 }
271
272 final int port = account.getPort();
273 final boolean directTls = Resolver.useDirectTls(port);
274
275 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": connect to " + destination + " via Tor. directTls="+directTls);
276 localSocket = SocksSocketFactory.createSocketOverTor(destination, port);
277
278 if (directTls) {
279 localSocket = upgradeSocketToTls(localSocket);
280 features.encryptionEnabled = true;
281 }
282
283 try {
284 startXmpp(localSocket);
285 } catch (InterruptedException e) {
286 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
287 return;
288 } catch (Exception e) {
289 throw new IOException(e.getMessage());
290 }
291 } else {
292 final String domain = account.getServer();
293 final List<Resolver.Result> results;
294 final boolean hardcoded = extended && !account.getHostname().isEmpty();
295 if (hardcoded) {
296 results = Resolver.fromHardCoded(account.getHostname(), account.getPort());
297 } else {
298 results = Resolver.resolve(domain);
299 }
300 if (Thread.currentThread().isInterrupted()) {
301 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
302 return;
303 }
304 if (results.size() == 0) {
305 Log.e(Config.LOGTAG,account.getJid().asBareJid()+": Resolver results were empty");
306 return;
307 }
308 final Resolver.Result storedBackupResult;
309 if (hardcoded) {
310 storedBackupResult = null;
311 } else {
312 storedBackupResult = mXmppConnectionService.databaseBackend.findResolverResult(domain);
313 if (storedBackupResult != null && !results.contains(storedBackupResult)) {
314 results.add(storedBackupResult);
315 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": loaded backup resolver result from db: " + storedBackupResult);
316 }
317 }
318 for (Iterator<Resolver.Result> iterator = results.iterator(); iterator.hasNext(); ) {
319 final Resolver.Result result = iterator.next();
320 if (Thread.currentThread().isInterrupted()) {
321 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
322 return;
323 }
324 try {
325 // if tls is true, encryption is implied and must not be started
326 features.encryptionEnabled = result.isDirectTls();
327 verifiedHostname = result.isAuthenticated() ? result.getHostname().toString() : null;
328 Log.d(Config.LOGTAG,"verified hostname "+verifiedHostname);
329 final InetSocketAddress addr;
330 if (result.getIp() != null) {
331 addr = new InetSocketAddress(result.getIp(), result.getPort());
332 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
333 + ": using values from resolver " + (result.getHostname() == null ? "" : result.getHostname().toString()
334 + "/") + result.getIp().getHostAddress() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
335 } else {
336 addr = new InetSocketAddress(IDN.toASCII(result.getHostname().toString()), result.getPort());
337 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
338 + ": using values from resolver "
339 + result.getHostname().toString() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
340 }
341
342 localSocket = new Socket();
343 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
344
345 if (features.encryptionEnabled) {
346 localSocket = upgradeSocketToTls(localSocket);
347 }
348
349 localSocket.setSoTimeout(Config.SOCKET_TIMEOUT * 1000);
350 if (startXmpp(localSocket)) {
351 localSocket.setSoTimeout(0); //reset to 0; once the connection is established we don’t want this
352 if (!hardcoded && !result.equals(storedBackupResult)) {
353 mXmppConnectionService.databaseBackend.saveResolverResult(domain, result);
354 }
355 break; // successfully connected to server that speaks xmpp
356 } else {
357 FileBackend.close(localSocket);
358 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
359 }
360 } catch (final StateChangingException e) {
361 if (!iterator.hasNext()) {
362 throw e;
363 }
364 } catch (InterruptedException e) {
365 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
366 return;
367 } catch (final Throwable e) {
368 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage() + "(" + e.getClass().getName() + ")");
369 if (!iterator.hasNext()) {
370 throw new UnknownHostException();
371 }
372 }
373 }
374 }
375 processStream();
376 } catch (final SecurityException e) {
377 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
378 } catch (final StateChangingException e) {
379 this.changeStatus(e.state);
380 } catch (final UnknownHostException | ConnectException e) {
381 this.changeStatus(Account.State.SERVER_NOT_FOUND);
382 } catch (final SocksSocketFactory.HostNotFoundException e) {
383 this.changeStatus(Account.State.SERVER_NOT_FOUND);
384 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
385 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
386 } catch (final IOException | XmlPullParserException e) {
387 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
388 this.changeStatus(Account.State.OFFLINE);
389 this.attempt = Math.max(0, this.attempt - 1);
390 } finally {
391 if (!Thread.currentThread().isInterrupted()) {
392 forceCloseSocket();
393 } else {
394 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not force closing socket because thread was interrupted");
395 }
396 }
397 }
398
399 /**
400 * Starts xmpp protocol, call after connecting to socket
401 *
402 * @return true if server returns with valid xmpp, false otherwise
403 */
404 private boolean startXmpp(Socket socket) throws Exception {
405 if (Thread.currentThread().isInterrupted()) {
406 throw new InterruptedException();
407 }
408 this.socket = socket;
409 tagReader = new XmlReader();
410 if (tagWriter != null) {
411 tagWriter.forceClose();
412 }
413 tagWriter = new TagWriter();
414 tagWriter.setOutputStream(socket.getOutputStream());
415 tagReader.setInputStream(socket.getInputStream());
416 tagWriter.beginDocument();
417 sendStartStream();
418 final Tag tag = tagReader.readTag();
419 if (Thread.currentThread().isInterrupted()) {
420 throw new InterruptedException();
421 }
422 if (socket instanceof SSLSocket) {
423 SSLSocketHelper.log(account, (SSLSocket) socket);
424 }
425 return tag != null && tag.isStart("stream");
426 }
427
428 private TlsFactoryVerifier getTlsFactoryVerifier() throws NoSuchAlgorithmException, KeyManagementException, IOException {
429 final SSLContext sc = SSLSocketHelper.getSSLContext();
430 final MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
431 final KeyManager[] keyManager;
432 if (account.getPrivateKeyAlias() != null) {
433 keyManager = new KeyManager[]{new MyKeyManager()};
434 } else {
435 keyManager = null;
436 }
437 final String domain = account.getServer();
438 sc.init(keyManager, new X509TrustManager[]{mInteractive ? trustManager.getInteractive(domain) : trustManager.getNonInteractive(domain)}, mXmppConnectionService.getRNG());
439 final SSLSocketFactory factory = sc.getSocketFactory();
440 final DomainHostnameVerifier verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier(), mInteractive);
441 return new TlsFactoryVerifier(factory, verifier);
442 }
443
444 @Override
445 public void run() {
446 synchronized (this) {
447 this.mThread = Thread.currentThread();
448 if (this.mThread.isInterrupted()) {
449 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": aborting connect because thread was interrupted");
450 return;
451 }
452 forceCloseSocket();
453 }
454 connect();
455 }
456
457 private void processStream() throws XmlPullParserException, IOException {
458 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
459 this.mStreamCountDownLatch = streamCountDownLatch;
460 Tag nextTag = tagReader.readTag();
461 while (nextTag != null && !nextTag.isEnd("stream")) {
462 if (nextTag.isStart("error")) {
463 processStreamError(nextTag);
464 } else if (nextTag.isStart("features")) {
465 processStreamFeatures(nextTag);
466 } else if (nextTag.isStart("proceed")) {
467 switchOverToTls();
468 } else if (nextTag.isStart("success")) {
469 final String challenge = tagReader.readElement(nextTag).getContent();
470 try {
471 saslMechanism.getResponse(challenge);
472 } catch (final SaslMechanism.AuthenticationException e) {
473 Log.e(Config.LOGTAG, String.valueOf(e));
474 throw new StateChangingException(Account.State.UNAUTHORIZED);
475 }
476 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": logged in");
477 account.setKey(Account.PINNED_MECHANISM_KEY,
478 String.valueOf(saslMechanism.getPriority()));
479 tagReader.reset();
480 sendStartStream();
481 final Tag tag = tagReader.readTag();
482 if (tag != null && tag.isStart("stream")) {
483 processStream();
484 } else {
485 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
486 }
487 break;
488 } else if (nextTag.isStart("failure")) {
489 final Element failure = tagReader.readElement(nextTag);
490 if (Namespace.SASL.equals(failure.getNamespace())) {
491 final String text = failure.findChildContent("text");
492 if (failure.hasChild("account-disabled") && text != null) {
493 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
494 if (matcher.find()) {
495 try {
496 URL url = new URL(text.substring(matcher.start(), matcher.end()));
497 if (url.getProtocol().equals("https")) {
498 this.redirectionUrl = url;
499 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
500 }
501 } catch (MalformedURLException e) {
502 throw new StateChangingException(Account.State.UNAUTHORIZED);
503 }
504 }
505 }
506 throw new StateChangingException(Account.State.UNAUTHORIZED);
507 } else if (Namespace.TLS.equals(failure.getNamespace())) {
508 throw new StateChangingException(Account.State.TLS_ERROR);
509 } else {
510 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
511 }
512 } else if (nextTag.isStart("challenge")) {
513 final String challenge = tagReader.readElement(nextTag).getContent();
514 final Element response = new Element("response", Namespace.SASL);
515 try {
516 response.setContent(saslMechanism.getResponse(challenge));
517 } catch (final SaslMechanism.AuthenticationException e) {
518 // TODO: Send auth abort tag.
519 Log.e(Config.LOGTAG, e.toString());
520 }
521 tagWriter.writeElement(response);
522 } else if (nextTag.isStart("enabled")) {
523 final Element enabled = tagReader.readElement(nextTag);
524 if ("true".equals(enabled.getAttribute("resume"))) {
525 this.streamId = enabled.getAttribute("id");
526 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
527 + ": stream management(" + smVersion
528 + ") enabled (resumable)");
529 } else {
530 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
531 + ": stream management(" + smVersion + ") enabled");
532 }
533 this.stanzasReceived = 0;
534 this.inSmacksSession = true;
535 final RequestPacket r = new RequestPacket(smVersion);
536 tagWriter.writeStanzaAsync(r);
537 } else if (nextTag.isStart("resumed")) {
538 this.inSmacksSession = true;
539 this.isBound = true;
540 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
541 lastPacketReceived = SystemClock.elapsedRealtime();
542 final Element resumed = tagReader.readElement(nextTag);
543 final String h = resumed.getAttribute("h");
544 try {
545 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
546 final boolean acknowledgedMessages;
547 synchronized (this.mStanzaQueue) {
548 final int serverCount = Integer.parseInt(h);
549 if (serverCount < stanzasSent) {
550 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
551 + ": session resumed with lost packages");
552 stanzasSent = serverCount;
553 } else {
554 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": session resumed");
555 }
556 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
557 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
558 failedStanzas.add(mStanzaQueue.valueAt(i));
559 }
560 mStanzaQueue.clear();
561 }
562 if (acknowledgedMessages) {
563 mXmppConnectionService.updateConversationUi();
564 }
565 Log.d(Config.LOGTAG, "resending " + failedStanzas.size() + " stanzas");
566 for (AbstractAcknowledgeableStanza packet : failedStanzas) {
567 if (packet instanceof MessagePacket) {
568 MessagePacket message = (MessagePacket) packet;
569 mXmppConnectionService.markMessage(account,
570 message.getTo().asBareJid(),
571 message.getId(),
572 Message.STATUS_UNSEND);
573 }
574 sendPacket(packet);
575 }
576 } catch (final NumberFormatException ignored) {
577 }
578 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
579 changeStatus(Account.State.ONLINE);
580 } else if (nextTag.isStart("r")) {
581 tagReader.readElement(nextTag);
582 if (Config.EXTENDED_SM_LOGGING) {
583 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
584 }
585 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
586 tagWriter.writeStanzaAsync(ack);
587 } else if (nextTag.isStart("a")) {
588 boolean accountUiNeedsRefresh = false;
589 synchronized (NotificationService.CATCHUP_LOCK) {
590 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
591 final int messageCount = mSmCatchupMessageCounter.get();
592 final int pendingIQs = packetCallbacks.size();
593 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": SM catchup complete (messages=" + messageCount + ", pending IQs="+pendingIQs+")");
594 accountUiNeedsRefresh = true;
595 if (messageCount > 0) {
596 mXmppConnectionService.getNotificationService().finishBacklog(true, account);
597 }
598 }
599 }
600 if (accountUiNeedsRefresh) {
601 mXmppConnectionService.updateAccountUi();
602 }
603 final Element ack = tagReader.readElement(nextTag);
604 lastPacketReceived = SystemClock.elapsedRealtime();
605 try {
606 final boolean acknowledgedMessages;
607 synchronized (this.mStanzaQueue) {
608 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
609 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence);
610 }
611 if (acknowledgedMessages) {
612 mXmppConnectionService.updateConversationUi();
613 }
614 } catch (NumberFormatException | NullPointerException e) {
615 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server send ack without sequence number");
616 }
617 } else if (nextTag.isStart("failed")) {
618 Element failed = tagReader.readElement(nextTag);
619 try {
620 final int serverCount = Integer.parseInt(failed.getAttribute("h"));
621 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed but server acknowledged stanza #" + serverCount);
622 final boolean acknowledgedMessages;
623 synchronized (this.mStanzaQueue) {
624 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
625 }
626 if (acknowledgedMessages) {
627 mXmppConnectionService.updateConversationUi();
628 }
629 } catch (NumberFormatException | NullPointerException e) {
630 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
631 }
632 resetStreamId();
633 sendBindRequest();
634 } else if (nextTag.isStart("iq")) {
635 processIq(nextTag);
636 } else if (nextTag.isStart("message")) {
637 processMessage(nextTag);
638 } else if (nextTag.isStart("presence")) {
639 processPresence(nextTag);
640 }
641 nextTag = tagReader.readTag();
642 }
643 if (nextTag != null && nextTag.isEnd("stream")) {
644 streamCountDownLatch.countDown();
645 }
646 }
647
648 private boolean acknowledgeStanzaUpTo(int serverCount) {
649 if (serverCount > stanzasSent) {
650 Log.e(Config.LOGTAG, "server acknowledged more stanzas than we sent. serverCount=" + serverCount + ", ourCount=" + stanzasSent);
651 }
652 boolean acknowledgedMessages = false;
653 for (int i = 0; i < mStanzaQueue.size(); ++i) {
654 if (serverCount >= mStanzaQueue.keyAt(i)) {
655 if (Config.EXTENDED_SM_LOGGING) {
656 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
657 }
658 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
659 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
660 MessagePacket packet = (MessagePacket) stanza;
661 acknowledgedMessages |= acknowledgedListener.onMessageAcknowledged(account, packet.getId());
662 }
663 mStanzaQueue.removeAt(i);
664 i--;
665 }
666 }
667 return acknowledgedMessages;
668 }
669
670 private @NonNull
671 Element processPacket(final Tag currentTag, final int packetType) throws IOException {
672 final Element element;
673 switch (packetType) {
674 case PACKET_IQ:
675 element = new IqPacket();
676 break;
677 case PACKET_MESSAGE:
678 element = new MessagePacket();
679 break;
680 case PACKET_PRESENCE:
681 element = new PresencePacket();
682 break;
683 default:
684 throw new AssertionError("Should never encounter invalid type");
685 }
686 element.setAttributes(currentTag.getAttributes());
687 Tag nextTag = tagReader.readTag();
688 if (nextTag == null) {
689 throw new IOException("interrupted mid tag");
690 }
691 while (!nextTag.isEnd(element.getName())) {
692 if (!nextTag.isNo()) {
693 element.addChild(tagReader.readElement(nextTag));
694 }
695 nextTag = tagReader.readTag();
696 if (nextTag == null) {
697 throw new IOException("interrupted mid tag");
698 }
699 }
700 if (stanzasReceived == Integer.MAX_VALUE) {
701 resetStreamId();
702 throw new IOException("time to restart the session. cant handle >2 billion pcks");
703 }
704 if (inSmacksSession) {
705 ++stanzasReceived;
706 } else if (features.sm()) {
707 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not counting stanza(" + element.getClass().getSimpleName() + "). Not in smacks session.");
708 }
709 lastPacketReceived = SystemClock.elapsedRealtime();
710 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
711 Log.d(Config.LOGTAG, "[background stanza] " + element);
712 }
713 if (element instanceof IqPacket && element.hasChild("jingle", Namespace.JINGLE)) {
714 return JinglePacket.upgrade((IqPacket) element);
715 } else {
716 return element;
717 }
718 }
719
720 private void processIq(final Tag currentTag) throws IOException {
721 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
722 if (!packet.valid()) {
723 Log.e(Config.LOGTAG, "encountered invalid iq from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
724 return;
725 }
726 if (packet instanceof JinglePacket) {
727 if (this.jingleListener != null) {
728 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
729 }
730 } else {
731 OnIqPacketReceived callback = null;
732 synchronized (this.packetCallbacks) {
733 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
734 if (packetCallbackDuple != null) {
735 // Packets to the server should have responses from the server
736 if (packetCallbackDuple.first.toServer(account)) {
737 if (packet.fromServer(account)) {
738 callback = packetCallbackDuple.second;
739 packetCallbacks.remove(packet.getId());
740 } else {
741 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
742 }
743 } else {
744 if (packet.getFrom() != null && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
745 callback = packetCallbackDuple.second;
746 packetCallbacks.remove(packet.getId());
747 } else {
748 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
749 }
750 }
751 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
752 callback = this.unregisteredIqListener;
753 }
754 }
755 if (callback != null) {
756 try {
757 callback.onIqPacketReceived(account, packet);
758 } catch (StateChangingError error) {
759 throw new StateChangingException(error.state);
760 }
761 }
762 }
763 }
764
765 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
766 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
767 if (!packet.valid()) {
768 Log.e(Config.LOGTAG, "encountered invalid message from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
769 return;
770 }
771 this.messageListener.onMessagePacketReceived(account, packet);
772 }
773
774 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
775 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
776 if (!packet.valid()) {
777 Log.e(Config.LOGTAG, "encountered invalid presence from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
778 return;
779 }
780 this.presenceListener.onPresencePacketReceived(account, packet);
781 }
782
783 private void sendStartTLS() throws IOException {
784 final Tag startTLS = Tag.empty("starttls");
785 startTLS.setAttribute("xmlns", Namespace.TLS);
786 tagWriter.writeTag(startTLS);
787 }
788
789 private void switchOverToTls() throws XmlPullParserException, IOException {
790 tagReader.readTag();
791 final Socket socket = this.socket;
792 final SSLSocket sslSocket = upgradeSocketToTls(socket);
793 tagReader.setInputStream(sslSocket.getInputStream());
794 tagWriter.setOutputStream(sslSocket.getOutputStream());
795 sendStartStream();
796 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
797 features.encryptionEnabled = true;
798 final Tag tag = tagReader.readTag();
799 if (tag != null && tag.isStart("stream")) {
800 SSLSocketHelper.log(account, sslSocket);
801 processStream();
802 } else {
803 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
804 }
805 sslSocket.close();
806 }
807
808 private SSLSocket upgradeSocketToTls(final Socket socket) throws IOException {
809 final TlsFactoryVerifier tlsFactoryVerifier;
810 try {
811 tlsFactoryVerifier = getTlsFactoryVerifier();
812 } catch (final NoSuchAlgorithmException | KeyManagementException e) {
813 throw new StateChangingException(Account.State.TLS_ERROR);
814 }
815 final InetAddress address = socket.getInetAddress();
816 final SSLSocket sslSocket = (SSLSocket) tlsFactoryVerifier.factory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
817 SSLSocketHelper.setSecurity(sslSocket);
818 SSLSocketHelper.setHostname(sslSocket, account.getServer());
819 SSLSocketHelper.setApplicationProtocol(sslSocket, "xmpp-client");
820 if (!tlsFactoryVerifier.verifier.verify(account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
821 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate verification failed");
822 FileBackend.close(sslSocket);
823 throw new StateChangingException(Account.State.TLS_ERROR);
824 }
825 return sslSocket;
826 }
827
828 private void processStreamFeatures(final Tag currentTag) throws XmlPullParserException, IOException {
829 this.streamFeatures = tagReader.readElement(currentTag);
830 final boolean isSecure = features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
831 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
832 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
833 sendStartTLS();
834 } else if (this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
835 if (isSecure) {
836 register();
837 } else {
838 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to find STARTTLS for registration process "+ XmlHelper.printElementNames(this.streamFeatures));
839 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
840 }
841 } else if (!this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
842 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
843 } else if (this.streamFeatures.hasChild("mechanisms") && shouldAuthenticate && isSecure) {
844 authenticate();
845 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
846 if (Config.EXTENDED_SM_LOGGING) {
847 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resuming after stanza #" + stanzasReceived);
848 }
849 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
850 this.mSmCatchupMessageCounter.set(0);
851 this.mWaitingForSmCatchup.set(true);
852 this.tagWriter.writeStanzaAsync(resume);
853 } else if (needsBinding) {
854 if (this.streamFeatures.hasChild("bind") && isSecure) {
855 sendBindRequest();
856 } else {
857 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to find bind feature "+ XmlHelper.printElementNames(this.streamFeatures));
858 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
859 }
860 }
861 }
862
863 private void authenticate() throws IOException {
864 final List<String> mechanisms = extractMechanisms(streamFeatures
865 .findChild("mechanisms"));
866 final Element auth = new Element("auth", Namespace.SASL);
867 if (mechanisms.contains("EXTERNAL") && account.getPrivateKeyAlias() != null) {
868 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
869 } else if (mechanisms.contains("SCRAM-SHA-256")) {
870 saslMechanism = new ScramSha256(tagWriter, account, mXmppConnectionService.getRNG());
871 } else if (mechanisms.contains("SCRAM-SHA-1")) {
872 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
873 } else if (mechanisms.contains("PLAIN") && !account.getJid().getDomain().equals("nimbuzz.com")) {
874 saslMechanism = new Plain(tagWriter, account);
875 } else if (mechanisms.contains("DIGEST-MD5")) {
876 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
877 } else if (mechanisms.contains("ANONYMOUS")) {
878 saslMechanism = new Anonymous(tagWriter, account, mXmppConnectionService.getRNG());
879 }
880 if (saslMechanism != null) {
881 final int pinnedMechanism = account.getKeyAsInt(Account.PINNED_MECHANISM_KEY, -1);
882 if (pinnedMechanism > saslMechanism.getPriority()) {
883 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
884 " has lower priority (" + saslMechanism.getPriority() +
885 ") than pinned priority (" + pinnedMechanism +
886 "). Possible downgrade attack?");
887 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
888 }
889 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
890 auth.setAttribute("mechanism", saslMechanism.getMechanism());
891 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
892 auth.setContent(saslMechanism.getClientFirstMessage());
893 }
894 tagWriter.writeElement(auth);
895 } else {
896 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to find supported SASL mechanism in "+mechanisms);
897 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
898 }
899 }
900
901 private List<String> extractMechanisms(final Element stream) {
902 final ArrayList<String> mechanisms = new ArrayList<>(stream
903 .getChildren().size());
904 for (final Element child : stream.getChildren()) {
905 mechanisms.add(child.getContent());
906 }
907 return mechanisms;
908 }
909
910
911 private void register() {
912 final String preAuth = account.getKey(Account.PRE_AUTH_REGISTRATION_TOKEN);
913 if (preAuth != null && features.invite()) {
914 final IqPacket preAuthRequest = new IqPacket(IqPacket.TYPE.SET);
915 preAuthRequest.addChild("preauth", Namespace.PARS).setAttribute("token", preAuth);
916 sendUnmodifiedIqPacket(preAuthRequest, (account, response) -> {
917 if (response.getType() == IqPacket.TYPE.RESULT) {
918 sendRegistryRequest();
919 } else {
920 final Element error = response.getError();
921 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": failed to pre auth. "+error);
922 throw new StateChangingError(Account.State.REGISTRATION_INVALID_TOKEN);
923 }
924 }, true);
925 } else {
926 sendRegistryRequest();
927 }
928 }
929
930 private void sendRegistryRequest() {
931 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
932 register.query(Namespace.REGISTER);
933 register.setTo(account.getDomain());
934 sendUnmodifiedIqPacket(register, (account, packet) -> {
935 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
936 return;
937 }
938 if (packet.getType() == IqPacket.TYPE.ERROR) {
939 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
940 }
941 final Element query = packet.query(Namespace.REGISTER);
942 if (query.hasChild("username") && (query.hasChild("password"))) {
943 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
944 final Element username = new Element("username").setContent(account.getUsername());
945 final Element password = new Element("password").setContent(account.getPassword());
946 register1.query(Namespace.REGISTER).addChild(username);
947 register1.query().addChild(password);
948 register1.setFrom(account.getJid().asBareJid());
949 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
950 } else if (query.hasChild("x", Namespace.DATA)) {
951 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
952 final Element blob = query.findChild("data", "urn:xmpp:bob");
953 final String id = packet.getId();
954 InputStream is;
955 if (blob != null) {
956 try {
957 final String base64Blob = blob.getContent();
958 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
959 is = new ByteArrayInputStream(strBlob);
960 } catch (Exception e) {
961 is = null;
962 }
963 } else {
964 try {
965 Field field = data.getFieldByName("url");
966 URL url = field != null && field.getValue() != null ? new URL(field.getValue()) : null;
967 is = url != null ? url.openStream() : null;
968 } catch (IOException e) {
969 is = null;
970 }
971 }
972
973 if (is != null) {
974 Bitmap captcha = BitmapFactory.decodeStream(is);
975 try {
976 if (mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha)) {
977 return;
978 }
979 } catch (Exception e) {
980 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
981 }
982 }
983 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
984 } else if (query.hasChild("instructions") || query.hasChild("x", Namespace.OOB)) {
985 final String instructions = query.findChildContent("instructions");
986 final Element oob = query.findChild("x", Namespace.OOB);
987 final String url = oob == null ? null : oob.findChildContent("url");
988 if (url != null) {
989 setAccountCreationFailed(url);
990 } else if (instructions != null) {
991 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
992 if (matcher.find()) {
993 setAccountCreationFailed(instructions.substring(matcher.start(), matcher.end()));
994 }
995 }
996 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
997 }
998 }, true);
999 }
1000
1001 private void setAccountCreationFailed(String url) {
1002 if (url != null) {
1003 try {
1004 this.redirectionUrl = new URL(url);
1005 if (this.redirectionUrl.getProtocol().equals("https")) {
1006 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1007 }
1008 } catch (MalformedURLException e) {
1009 //fall through
1010 }
1011 }
1012 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1013 }
1014
1015 public URL getRedirectionUrl() {
1016 return this.redirectionUrl;
1017 }
1018
1019 public void resetEverything() {
1020 resetAttemptCount(true);
1021 resetStreamId();
1022 clearIqCallbacks();
1023 this.stanzasSent = 0;
1024 mStanzaQueue.clear();
1025 this.redirectionUrl = null;
1026 synchronized (this.disco) {
1027 disco.clear();
1028 }
1029 }
1030
1031 private void sendBindRequest() {
1032 try {
1033 mXmppConnectionService.restoredFromDatabaseLatch.await();
1034 } catch (InterruptedException e) {
1035 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while waiting for DB restore during bind");
1036 return;
1037 }
1038 clearIqCallbacks();
1039 if (account.getJid().isBareJid()) {
1040 account.setResource(this.createNewResource());
1041 } else {
1042 fixResource(mXmppConnectionService, account);
1043 }
1044 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1045 final String resource = Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1046 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1047 this.sendUnmodifiedIqPacket(iq, (account, packet) -> {
1048 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1049 return;
1050 }
1051 final Element bind = packet.findChild("bind");
1052 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1053 isBound = true;
1054 final Element jid = bind.findChild("jid");
1055 if (jid != null && jid.getContent() != null) {
1056 try {
1057 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1058 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1059 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server tried to re-assign domain to " + assignedJid.getDomain());
1060 throw new StateChangingError(Account.State.BIND_FAILURE);
1061 }
1062 if (account.setJid(assignedJid)) {
1063 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": jid changed during bind. updating database");
1064 mXmppConnectionService.databaseBackend.updateAccount(account);
1065 }
1066 if (streamFeatures.hasChild("session")
1067 && !streamFeatures.findChild("session").hasChild("optional")) {
1068 sendStartSession();
1069 } else {
1070 sendPostBindInitialization();
1071 }
1072 return;
1073 } catch (final IllegalArgumentException e) {
1074 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server reported invalid jid (" + jid.getContent() + ") on bind");
1075 }
1076 } else {
1077 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure. (no jid)");
1078 }
1079 } else {
1080 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet.toString());
1081 }
1082 final Element error = packet.findChild("error");
1083 if (packet.getType() == IqPacket.TYPE.ERROR && error != null && error.hasChild("conflict")) {
1084 account.setResource(createNewResource());
1085 }
1086 throw new StateChangingError(Account.State.BIND_FAILURE);
1087 }, true);
1088 }
1089
1090 private void clearIqCallbacks() {
1091 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1092 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1093 synchronized (this.packetCallbacks) {
1094 if (this.packetCallbacks.size() == 0) {
1095 return;
1096 }
1097 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": clearing " + this.packetCallbacks.size() + " iq callbacks");
1098 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
1099 while (iterator.hasNext()) {
1100 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1101 callbacks.add(entry.second);
1102 iterator.remove();
1103 }
1104 }
1105 for (OnIqPacketReceived callback : callbacks) {
1106 try {
1107 callback.onIqPacketReceived(account, failurePacket);
1108 } catch (StateChangingError error) {
1109 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": caught StateChangingError(" + error.state.toString() + ") while clearing callbacks");
1110 //ignore
1111 }
1112 }
1113 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
1114 }
1115
1116 public void sendDiscoTimeout() {
1117 if (mWaitForDisco.compareAndSet(true, false)) {
1118 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1119 finalizeBind();
1120 }
1121 }
1122
1123 private void sendStartSession() {
1124 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": sending legacy session to outdated server");
1125 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1126 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1127 this.sendUnmodifiedIqPacket(startSession, (account, packet) -> {
1128 if (packet.getType() == IqPacket.TYPE.RESULT) {
1129 sendPostBindInitialization();
1130 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1131 throw new StateChangingError(Account.State.SESSION_FAILURE);
1132 }
1133 }, true);
1134 }
1135
1136 private void sendPostBindInitialization() {
1137 smVersion = 0;
1138 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
1139 smVersion = 3;
1140 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
1141 smVersion = 2;
1142 }
1143 if (smVersion != 0) {
1144 synchronized (this.mStanzaQueue) {
1145 final EnablePacket enable = new EnablePacket(smVersion);
1146 tagWriter.writeStanzaAsync(enable);
1147 stanzasSent = 0;
1148 mStanzaQueue.clear();
1149 }
1150 }
1151 features.carbonsEnabled = false;
1152 features.blockListRequested = false;
1153 synchronized (this.disco) {
1154 this.disco.clear();
1155 }
1156 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1157 mPendingServiceDiscoveries.set(0);
1158 if (smVersion == 0 || Patches.DISCO_EXCEPTIONS.contains(account.getJid().getDomain())) {
1159 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": do not wait for service discovery");
1160 mWaitForDisco.set(false);
1161 } else {
1162 mWaitForDisco.set(true);
1163 }
1164 lastDiscoStarted = SystemClock.elapsedRealtime();
1165 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1166 Element caps = streamFeatures.findChild("c");
1167 final String hash = caps == null ? null : caps.getAttribute("hash");
1168 final String ver = caps == null ? null : caps.getAttribute("ver");
1169 ServiceDiscoveryResult discoveryResult = null;
1170 if (hash != null && ver != null) {
1171 discoveryResult = mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1172 }
1173 final boolean requestDiscoItemsFirst = !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1174 if (requestDiscoItemsFirst) {
1175 sendServiceDiscoveryItems(account.getDomain());
1176 }
1177 if (discoveryResult == null) {
1178 sendServiceDiscoveryInfo(account.getDomain());
1179 } else {
1180 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1181 disco.put(account.getDomain(), discoveryResult);
1182 }
1183 discoverMamPreferences();
1184 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1185 if (!requestDiscoItemsFirst) {
1186 sendServiceDiscoveryItems(account.getDomain());
1187 }
1188
1189 if (!mWaitForDisco.get()) {
1190 finalizeBind();
1191 }
1192 this.lastSessionStarted = SystemClock.elapsedRealtime();
1193 }
1194
1195 private void sendServiceDiscoveryInfo(final Jid jid) {
1196 mPendingServiceDiscoveries.incrementAndGet();
1197 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1198 iq.setTo(jid);
1199 iq.query("http://jabber.org/protocol/disco#info");
1200 this.sendIqPacket(iq, (account, packet) -> {
1201 if (packet.getType() == IqPacket.TYPE.RESULT) {
1202 boolean advancedStreamFeaturesLoaded;
1203 synchronized (XmppConnection.this.disco) {
1204 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1205 if (jid.equals(account.getDomain())) {
1206 mXmppConnectionService.databaseBackend.insertDiscoveryResult(result);
1207 }
1208 disco.put(jid, result);
1209 advancedStreamFeaturesLoaded = disco.containsKey(account.getDomain())
1210 && disco.containsKey(account.getJid().asBareJid());
1211 }
1212 if (advancedStreamFeaturesLoaded && (jid.equals(account.getDomain()) || jid.equals(account.getJid().asBareJid()))) {
1213 enableAdvancedStreamFeatures();
1214 }
1215 } else if (packet.getType() == IqPacket.TYPE.ERROR) {
1216 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco info for " + jid.toString());
1217 final boolean serverOrAccount = jid.equals(account.getDomain()) || jid.equals(account.getJid().asBareJid());
1218 final boolean advancedStreamFeaturesLoaded;
1219 if (serverOrAccount) {
1220 synchronized (XmppConnection.this.disco) {
1221 disco.put(jid, ServiceDiscoveryResult.empty());
1222 advancedStreamFeaturesLoaded = disco.containsKey(account.getDomain()) && disco.containsKey(account.getJid().asBareJid());
1223 }
1224 } else {
1225 advancedStreamFeaturesLoaded = false;
1226 }
1227 if (advancedStreamFeaturesLoaded) {
1228 enableAdvancedStreamFeatures();
1229 }
1230 }
1231 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1232 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1233 && mWaitForDisco.compareAndSet(true, false)) {
1234 finalizeBind();
1235 }
1236 }
1237 });
1238 }
1239
1240 private void discoverMamPreferences() {
1241 IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1242 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1243 sendIqPacket(request, (account, response) -> {
1244 if (response.getType() == IqPacket.TYPE.RESULT) {
1245 Element prefs = response.findChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1246 isMamPreferenceAlways = "always".equals(prefs == null ? null : prefs.getAttribute("default"));
1247 }
1248 });
1249 }
1250
1251 public boolean isMamPreferenceAlways() {
1252 return isMamPreferenceAlways;
1253 }
1254
1255 private void finalizeBind() {
1256 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
1257 if (bindListener != null) {
1258 bindListener.onBind(account);
1259 }
1260 changeStatus(Account.State.ONLINE);
1261 }
1262
1263 private void enableAdvancedStreamFeatures() {
1264 if (getFeatures().blocking() && !features.blockListRequested) {
1265 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
1266 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1267 }
1268 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1269 listener.onAdvancedStreamFeaturesAvailable(account);
1270 }
1271 if (getFeatures().carbons() && !features.carbonsEnabled) {
1272 sendEnableCarbons();
1273 }
1274 }
1275
1276 private void sendServiceDiscoveryItems(final Jid server) {
1277 mPendingServiceDiscoveries.incrementAndGet();
1278 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1279 iq.setTo(server.getDomain());
1280 iq.query("http://jabber.org/protocol/disco#items");
1281 this.sendIqPacket(iq, (account, packet) -> {
1282 if (packet.getType() == IqPacket.TYPE.RESULT) {
1283 HashSet<Jid> items = new HashSet<Jid>();
1284 final List<Element> elements = packet.query().getChildren();
1285 for (final Element element : elements) {
1286 if (element.getName().equals("item")) {
1287 final Jid jid = InvalidJid.getNullForInvalid(element.getAttributeAsJid("jid"));
1288 if (jid != null && !jid.equals(account.getDomain())) {
1289 items.add(jid);
1290 }
1291 }
1292 }
1293 for (Jid jid : items) {
1294 sendServiceDiscoveryInfo(jid);
1295 }
1296 } else {
1297 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco items of " + server);
1298 }
1299 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1300 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1301 && mWaitForDisco.compareAndSet(true, false)) {
1302 finalizeBind();
1303 }
1304 }
1305 });
1306 }
1307
1308 private void sendEnableCarbons() {
1309 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1310 iq.addChild("enable", "urn:xmpp:carbons:2");
1311 this.sendIqPacket(iq, new OnIqPacketReceived() {
1312
1313 @Override
1314 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1315 if (!packet.hasChild("error")) {
1316 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1317 + ": successfully enabled carbons");
1318 features.carbonsEnabled = true;
1319 } else {
1320 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1321 + ": error enableing carbons " + packet.toString());
1322 }
1323 }
1324 });
1325 }
1326
1327 private void processStreamError(final Tag currentTag) throws XmlPullParserException, IOException {
1328 final Element streamError = tagReader.readElement(currentTag);
1329 if (streamError == null) {
1330 return;
1331 }
1332 if (streamError.hasChild("conflict")) {
1333 account.setResource(createNewResource());
1334 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": switching resource due to conflict (" + account.getResource() + ")");
1335 throw new IOException();
1336 } else if (streamError.hasChild("host-unknown")) {
1337 throw new StateChangingException(Account.State.HOST_UNKNOWN);
1338 } else if (streamError.hasChild("policy-violation")) {
1339 this.lastConnect = SystemClock.elapsedRealtime();
1340 final String text = streamError.findChildContent("text");
1341 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": policy violation. "+text);
1342 throw new StateChangingException(Account.State.POLICY_VIOLATION);
1343 } else {
1344 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError.toString());
1345 throw new StateChangingException(Account.State.STREAM_ERROR);
1346 }
1347 }
1348
1349 private void sendStartStream() throws IOException {
1350 final Tag stream = Tag.start("stream:stream");
1351 stream.setAttribute("to", account.getServer());
1352 stream.setAttribute("version", "1.0");
1353 stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
1354 stream.setAttribute("xmlns", "jabber:client");
1355 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1356 tagWriter.writeTag(stream);
1357 }
1358
1359 private String createNewResource() {
1360 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
1361 }
1362
1363 private String nextRandomId() {
1364 return nextRandomId(false);
1365 }
1366
1367 private String nextRandomId(boolean s) {
1368 return CryptoHelper.random(s ? 3 : 9, mXmppConnectionService.getRNG());
1369 }
1370
1371 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1372 packet.setFrom(account.getJid());
1373 return this.sendUnmodifiedIqPacket(packet, callback, false);
1374 }
1375
1376 public synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
1377 if (packet.getId() == null) {
1378 packet.setAttribute("id", nextRandomId());
1379 }
1380 if (callback != null) {
1381 synchronized (this.packetCallbacks) {
1382 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1383 }
1384 }
1385 this.sendPacket(packet, force);
1386 return packet.getId();
1387 }
1388
1389 public void sendMessagePacket(final MessagePacket packet) {
1390 this.sendPacket(packet);
1391 }
1392
1393 public void sendPresencePacket(final PresencePacket packet) {
1394 this.sendPacket(packet);
1395 }
1396
1397 private synchronized void sendPacket(final AbstractStanza packet) {
1398 sendPacket(packet, false);
1399 }
1400
1401 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
1402 if (stanzasSent == Integer.MAX_VALUE) {
1403 resetStreamId();
1404 disconnect(true);
1405 return;
1406 }
1407 synchronized (this.mStanzaQueue) {
1408 if (force || isBound) {
1409 tagWriter.writeStanzaAsync(packet);
1410 } else {
1411 Log.d(Config.LOGTAG, account.getJid().asBareJid() + " do not write stanza to unbound stream " + packet.toString());
1412 }
1413 if (packet instanceof AbstractAcknowledgeableStanza) {
1414 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1415
1416 if (this.mStanzaQueue.size() != 0) {
1417 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
1418 if (currentHighestKey != stanzasSent) {
1419 throw new AssertionError("Stanza count messed up");
1420 }
1421 }
1422
1423 ++stanzasSent;
1424 this.mStanzaQueue.append(stanzasSent, stanza);
1425 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
1426 if (Config.EXTENDED_SM_LOGGING) {
1427 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1428 }
1429 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1430 }
1431 }
1432 }
1433 }
1434
1435 public void sendPing() {
1436 if (!r()) {
1437 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1438 iq.setFrom(account.getJid());
1439 iq.addChild("ping", Namespace.PING);
1440 this.sendIqPacket(iq, null);
1441 }
1442 this.lastPingSent = SystemClock.elapsedRealtime();
1443 }
1444
1445 public void setOnMessagePacketReceivedListener(
1446 final OnMessagePacketReceived listener) {
1447 this.messageListener = listener;
1448 }
1449
1450 public void setOnUnregisteredIqPacketReceivedListener(
1451 final OnIqPacketReceived listener) {
1452 this.unregisteredIqListener = listener;
1453 }
1454
1455 public void setOnPresencePacketReceivedListener(
1456 final OnPresencePacketReceived listener) {
1457 this.presenceListener = listener;
1458 }
1459
1460 public void setOnJinglePacketReceivedListener(
1461 final OnJinglePacketReceived listener) {
1462 this.jingleListener = listener;
1463 }
1464
1465 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1466 this.statusListener = listener;
1467 }
1468
1469 public void setOnBindListener(final OnBindListener listener) {
1470 this.bindListener = listener;
1471 }
1472
1473 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1474 this.acknowledgedListener = listener;
1475 }
1476
1477 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1478 this.advancedStreamFeaturesLoadedListeners.add(listener);
1479 }
1480
1481 private void forceCloseSocket() {
1482 FileBackend.close(this.socket);
1483 FileBackend.close(this.tagReader);
1484 }
1485
1486 public void interrupt() {
1487 if (this.mThread != null) {
1488 this.mThread.interrupt();
1489 }
1490 }
1491
1492 public void disconnect(final boolean force) {
1493 interrupt();
1494 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
1495 if (force) {
1496 forceCloseSocket();
1497 } else {
1498 final TagWriter currentTagWriter = this.tagWriter;
1499 if (currentTagWriter.isActive()) {
1500 currentTagWriter.finish();
1501 final Socket currentSocket = this.socket;
1502 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
1503 try {
1504 currentTagWriter.await(1, TimeUnit.SECONDS);
1505 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
1506 currentTagWriter.writeTag(Tag.end("stream:stream"));
1507 if (streamCountDownLatch != null) {
1508 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
1509 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote ended stream");
1510 } else {
1511 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote has not closed socket. force closing");
1512 }
1513 }
1514 } catch (InterruptedException e) {
1515 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while gracefully closing stream");
1516 } catch (final IOException e) {
1517 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": io exception during disconnect (" + e.getMessage() + ")");
1518 } finally {
1519 FileBackend.close(currentSocket);
1520 }
1521 } else {
1522 forceCloseSocket();
1523 }
1524 }
1525 }
1526
1527 private void resetStreamId() {
1528 this.streamId = null;
1529 }
1530
1531 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
1532 synchronized (this.disco) {
1533 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
1534 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
1535 if (cursor.getValue().getFeatures().contains(feature)) {
1536 items.add(cursor);
1537 }
1538 }
1539 return items;
1540 }
1541 }
1542
1543 public Jid findDiscoItemByFeature(final String feature) {
1544 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
1545 if (items.size() >= 1) {
1546 return items.get(0).getKey();
1547 }
1548 return null;
1549 }
1550
1551 public boolean r() {
1552 if (getFeatures().sm()) {
1553 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1554 return true;
1555 } else {
1556 return false;
1557 }
1558 }
1559
1560 public List<String> getMucServersWithholdAccount() {
1561 List<String> servers = getMucServers();
1562 servers.remove(account.getDomain());
1563 return servers;
1564 }
1565
1566 public List<String> getMucServers() {
1567 List<String> servers = new ArrayList<>();
1568 synchronized (this.disco) {
1569 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
1570 final ServiceDiscoveryResult value = cursor.getValue();
1571 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
1572 && value.hasIdentity("conference", "text")
1573 && !value.getFeatures().contains("jabber:iq:gateway")
1574 && !value.hasIdentity("conference", "irc")) {
1575 servers.add(cursor.getKey().toString());
1576 }
1577 }
1578 }
1579 return servers;
1580 }
1581
1582 public String getMucServer() {
1583 List<String> servers = getMucServers();
1584 return servers.size() > 0 ? servers.get(0) : null;
1585 }
1586
1587 public int getTimeToNextAttempt() {
1588 final int additionalTime = account.getLastErrorStatus() == Account.State.POLICY_VIOLATION ? 3 : 0;
1589 final int interval = Math.min((int) (25 * Math.pow(1.3, (additionalTime + attempt))), 300);
1590 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1591 return interval - secondsSinceLast;
1592 }
1593
1594 public int getAttempt() {
1595 return this.attempt;
1596 }
1597
1598 public Features getFeatures() {
1599 return this.features;
1600 }
1601
1602 public long getLastSessionEstablished() {
1603 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1604 return System.currentTimeMillis() - diff;
1605 }
1606
1607 public long getLastConnect() {
1608 return this.lastConnect;
1609 }
1610
1611 public long getLastPingSent() {
1612 return this.lastPingSent;
1613 }
1614
1615 public long getLastDiscoStarted() {
1616 return this.lastDiscoStarted;
1617 }
1618
1619 public long getLastPacketReceived() {
1620 return this.lastPacketReceived;
1621 }
1622
1623 public void sendActive() {
1624 this.sendPacket(new ActivePacket());
1625 }
1626
1627 public void sendInactive() {
1628 this.sendPacket(new InactivePacket());
1629 }
1630
1631 public void resetAttemptCount(boolean resetConnectTime) {
1632 this.attempt = 0;
1633 if (resetConnectTime) {
1634 this.lastConnect = 0;
1635 }
1636 }
1637
1638 public void setInteractive(boolean interactive) {
1639 this.mInteractive = interactive;
1640 }
1641
1642 public Identity getServerIdentity() {
1643 synchronized (this.disco) {
1644 ServiceDiscoveryResult result = disco.get(account.getJid().getDomain());
1645 if (result == null) {
1646 return Identity.UNKNOWN;
1647 }
1648 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
1649 if (id.getType().equals("im") && id.getCategory().equals("server") && id.getName() != null) {
1650 switch (id.getName()) {
1651 case "Prosody":
1652 return Identity.PROSODY;
1653 case "ejabberd":
1654 return Identity.EJABBERD;
1655 case "Slack-XMPP":
1656 return Identity.SLACK;
1657 }
1658 }
1659 }
1660 }
1661 return Identity.UNKNOWN;
1662 }
1663
1664 private IqGenerator getIqGenerator() {
1665 return mXmppConnectionService.getIqGenerator();
1666 }
1667
1668 public enum Identity {
1669 FACEBOOK,
1670 SLACK,
1671 EJABBERD,
1672 PROSODY,
1673 NIMBUZZ,
1674 UNKNOWN
1675 }
1676
1677 private static class TlsFactoryVerifier {
1678 private final SSLSocketFactory factory;
1679 private final DomainHostnameVerifier verifier;
1680
1681 TlsFactoryVerifier(final SSLSocketFactory factory, final DomainHostnameVerifier verifier) throws IOException {
1682 this.factory = factory;
1683 this.verifier = verifier;
1684 if (factory == null || verifier == null) {
1685 throw new IOException("could not setup ssl");
1686 }
1687 }
1688 }
1689
1690 private class MyKeyManager implements X509KeyManager {
1691 @Override
1692 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
1693 return account.getPrivateKeyAlias();
1694 }
1695
1696 @Override
1697 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
1698 return null;
1699 }
1700
1701 @Override
1702 public X509Certificate[] getCertificateChain(String alias) {
1703 Log.d(Config.LOGTAG, "getting certificate chain");
1704 try {
1705 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
1706 } catch (Exception e) {
1707 Log.d(Config.LOGTAG, e.getMessage());
1708 return new X509Certificate[0];
1709 }
1710 }
1711
1712 @Override
1713 public String[] getClientAliases(String s, Principal[] principals) {
1714 final String alias = account.getPrivateKeyAlias();
1715 return alias != null ? new String[]{alias} : new String[0];
1716 }
1717
1718 @Override
1719 public String[] getServerAliases(String s, Principal[] principals) {
1720 return new String[0];
1721 }
1722
1723 @Override
1724 public PrivateKey getPrivateKey(String alias) {
1725 try {
1726 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
1727 } catch (Exception e) {
1728 return null;
1729 }
1730 }
1731 }
1732
1733 private class StateChangingError extends Error {
1734 private final Account.State state;
1735
1736 public StateChangingError(Account.State state) {
1737 this.state = state;
1738 }
1739 }
1740
1741 private class StateChangingException extends IOException {
1742 private final Account.State state;
1743
1744 public StateChangingException(Account.State state) {
1745 this.state = state;
1746 }
1747 }
1748
1749 public class Features {
1750 XmppConnection connection;
1751 private boolean carbonsEnabled = false;
1752 private boolean encryptionEnabled = false;
1753 private boolean blockListRequested = false;
1754
1755 public Features(final XmppConnection connection) {
1756 this.connection = connection;
1757 }
1758
1759 private boolean hasDiscoFeature(final Jid server, final String feature) {
1760 synchronized (XmppConnection.this.disco) {
1761 return connection.disco.containsKey(server) &&
1762 connection.disco.get(server).getFeatures().contains(feature);
1763 }
1764 }
1765
1766 public boolean carbons() {
1767 return hasDiscoFeature(account.getDomain(), "urn:xmpp:carbons:2");
1768 }
1769
1770 public boolean bookmarksConversion() {
1771 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION) && pepPublishOptions();
1772 }
1773
1774 public boolean avatarConversion() {
1775 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.AVATAR_CONVERSION) && pepPublishOptions();
1776 }
1777
1778 public boolean blocking() {
1779 return hasDiscoFeature(account.getDomain(), Namespace.BLOCKING);
1780 }
1781
1782 public boolean spamReporting() {
1783 return hasDiscoFeature(account.getDomain(), "urn:xmpp:reporting:reason:spam:0");
1784 }
1785
1786 public boolean flexibleOfflineMessageRetrieval() {
1787 return hasDiscoFeature(account.getDomain(), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
1788 }
1789
1790 public boolean register() {
1791 return hasDiscoFeature(account.getDomain(), Namespace.REGISTER);
1792 }
1793
1794 public boolean invite() {
1795 return connection.streamFeatures != null && connection.streamFeatures.hasChild("register", Namespace.INVITE);
1796 }
1797
1798 public boolean sm() {
1799 return streamId != null
1800 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1801 }
1802
1803 public boolean csi() {
1804 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1805 }
1806
1807 public boolean pep() {
1808 synchronized (XmppConnection.this.disco) {
1809 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1810 return info != null && info.hasIdentity("pubsub", "pep");
1811 }
1812 }
1813
1814 public boolean pepPersistent() {
1815 synchronized (XmppConnection.this.disco) {
1816 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1817 return info != null && info.getFeatures().contains("http://jabber.org/protocol/pubsub#persistent-items");
1818 }
1819 }
1820
1821 public boolean pepPublishOptions() {
1822 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
1823 }
1824
1825 public boolean pepOmemoWhitelisted() {
1826 return hasDiscoFeature(account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
1827 }
1828
1829 public boolean mam() {
1830 return MessageArchiveService.Version.has(getAccountFeatures());
1831 }
1832
1833 public List<String> getAccountFeatures() {
1834 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
1835 return result == null ? Collections.emptyList() : result.getFeatures();
1836 }
1837
1838 public boolean push() {
1839 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
1840 || hasDiscoFeature(account.getDomain(), Namespace.PUSH);
1841 }
1842
1843 public boolean rosterVersioning() {
1844 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1845 }
1846
1847 public void setBlockListRequested(boolean value) {
1848 this.blockListRequested = value;
1849 }
1850
1851 public boolean p1S3FileTransfer() {
1852 return hasDiscoFeature(account.getDomain(), Namespace.P1_S3_FILE_TRANSFER);
1853 }
1854
1855 public boolean httpUpload(long filesize) {
1856 if (Config.DISABLE_HTTP_UPLOAD) {
1857 return false;
1858 } else {
1859 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1860 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1861 if (items.size() > 0) {
1862 try {
1863 long maxsize = Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1864 if (filesize <= maxsize) {
1865 return true;
1866 } else {
1867 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": http upload is not available for files with size " + filesize + " (max is " + maxsize + ")");
1868 return false;
1869 }
1870 } catch (Exception e) {
1871 return true;
1872 }
1873 }
1874 }
1875 return false;
1876 }
1877 }
1878
1879 public boolean useLegacyHttpUpload() {
1880 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
1881 }
1882
1883 public long getMaxHttpUploadSize() {
1884 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1885 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1886 if (items.size() > 0) {
1887 try {
1888 return Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1889 } catch (Exception e) {
1890 //ignored
1891 }
1892 }
1893 }
1894 return -1;
1895 }
1896
1897 public boolean stanzaIds() {
1898 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
1899 }
1900
1901 public boolean bookmarks2() {
1902 return Config.USE_BOOKMARKS2 /* || hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS2_COMPAT)*/;
1903 }
1904
1905 public boolean externalServiceDiscovery() {
1906 return hasDiscoFeature(account.getDomain(),Namespace.EXTERNAL_SERVICE_DISCOVERY);
1907 }
1908 }
1909}