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.SSLSession;
51import javax.net.ssl.SSLSocket;
52import javax.net.ssl.SSLSocketFactory;
53import javax.net.ssl.X509KeyManager;
54import javax.net.ssl.X509TrustManager;
55
56import eu.siacs.conversations.Config;
57import eu.siacs.conversations.R;
58import eu.siacs.conversations.crypto.DomainHostnameVerifier;
59import eu.siacs.conversations.crypto.XmppDomainVerifier;
60import eu.siacs.conversations.crypto.axolotl.AxolotlService;
61import eu.siacs.conversations.crypto.sasl.Anonymous;
62import eu.siacs.conversations.crypto.sasl.DigestMd5;
63import eu.siacs.conversations.crypto.sasl.External;
64import eu.siacs.conversations.crypto.sasl.Plain;
65import eu.siacs.conversations.crypto.sasl.SaslMechanism;
66import eu.siacs.conversations.crypto.sasl.ScramSha1;
67import eu.siacs.conversations.crypto.sasl.ScramSha256;
68import eu.siacs.conversations.entities.Account;
69import eu.siacs.conversations.entities.Message;
70import eu.siacs.conversations.entities.ServiceDiscoveryResult;
71import eu.siacs.conversations.generator.IqGenerator;
72import eu.siacs.conversations.persistance.FileBackend;
73import eu.siacs.conversations.services.MemorizingTrustManager;
74import eu.siacs.conversations.services.MessageArchiveService;
75import eu.siacs.conversations.services.NotificationService;
76import eu.siacs.conversations.services.XmppConnectionService;
77import eu.siacs.conversations.utils.CryptoHelper;
78import eu.siacs.conversations.utils.IP;
79import eu.siacs.conversations.utils.Patterns;
80import eu.siacs.conversations.utils.Resolver;
81import eu.siacs.conversations.utils.SSLSocketHelper;
82import eu.siacs.conversations.utils.SocksSocketFactory;
83import eu.siacs.conversations.xml.Element;
84import eu.siacs.conversations.xml.Namespace;
85import eu.siacs.conversations.xml.Tag;
86import eu.siacs.conversations.xml.TagWriter;
87import eu.siacs.conversations.xml.XmlReader;
88import eu.siacs.conversations.xmpp.forms.Data;
89import eu.siacs.conversations.xmpp.forms.Field;
90import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
91import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
92import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
93import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
94import eu.siacs.conversations.xmpp.stanzas.IqPacket;
95import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
96import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
97import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
98import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
99import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
100import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
101import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
102import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
103import rocks.xmpp.addr.Jid;
104
105public class XmppConnection implements Runnable {
106
107 private static final int PACKET_IQ = 0;
108 private static final int PACKET_MESSAGE = 1;
109 private static final int PACKET_PRESENCE = 2;
110 public final OnIqPacketReceived registrationResponseListener = new OnIqPacketReceived() {
111 @Override
112 public void onIqPacketReceived(Account account, IqPacket packet) {
113 if (packet.getType() == IqPacket.TYPE.RESULT) {
114 account.setOption(Account.OPTION_REGISTER, false);
115 throw new StateChangingError(Account.State.REGISTRATION_SUCCESSFUL);
116 } else {
117 final List<String> PASSWORD_TOO_WEAK_MSGS = Arrays.asList(
118 "The password is too weak",
119 "Please use a longer password.");
120 Element error = packet.findChild("error");
121 Account.State state = Account.State.REGISTRATION_FAILED;
122 if (error != null) {
123 if (error.hasChild("conflict")) {
124 state = Account.State.REGISTRATION_CONFLICT;
125 } else if (error.hasChild("resource-constraint")
126 && "wait".equals(error.getAttribute("type"))) {
127 state = Account.State.REGISTRATION_PLEASE_WAIT;
128 } else if (error.hasChild("not-acceptable")
129 && PASSWORD_TOO_WEAK_MSGS.contains(error.findChildContent("text"))) {
130 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
131 }
132 }
133 throw new StateChangingError(state);
134 }
135 }
136 };
137 protected final Account account;
138 private final Features features = new Features(this);
139 private final HashMap<Jid, ServiceDiscoveryResult> disco = new HashMap<>();
140 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
141 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
142 private final Set<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new HashSet<>();
143 private final XmppConnectionService mXmppConnectionService;
144 private Socket socket;
145 private XmlReader tagReader;
146 private TagWriter tagWriter = new TagWriter();
147 private boolean shouldAuthenticate = true;
148 private boolean inSmacksSession = false;
149 private boolean isBound = false;
150 private Element streamFeatures;
151 private String streamId = null;
152 private int smVersion = 3;
153 private int stanzasReceived = 0;
154 private int stanzasSent = 0;
155 private long lastPacketReceived = 0;
156 private long lastPingSent = 0;
157 private long lastConnect = 0;
158 private long lastSessionStarted = 0;
159 private long lastDiscoStarted = 0;
160 private AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
161 private AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
162 private AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
163 private AtomicInteger mSmCatchupMessageCounter = new AtomicInteger(0);
164 private boolean mInteractive = false;
165 private int attempt = 0;
166 private OnPresencePacketReceived presenceListener = null;
167 private OnJinglePacketReceived jingleListener = null;
168 private OnIqPacketReceived unregisteredIqListener = null;
169 private OnMessagePacketReceived messageListener = null;
170 private OnStatusChanged statusListener = null;
171 private OnBindListener bindListener = null;
172 private OnMessageAcknowledged acknowledgedListener = null;
173 private SaslMechanism saslMechanism;
174 private URL redirectionUrl = null;
175 private String verifiedHostname = null;
176 private volatile Thread mThread;
177 private CountDownLatch mStreamCountDownLatch;
178
179
180 public XmppConnection(final Account account, final XmppConnectionService service) {
181 this.account = account;
182 this.mXmppConnectionService = service;
183 }
184
185 private static void fixResource(Context context, Account account) {
186 String resource = account.getResource();
187 int fixedPartLength = context.getString(R.string.app_name).length() + 1; //include the trailing dot
188 int randomPartLength = 4; // 3 bytes
189 if (resource != null && resource.length() > fixedPartLength + randomPartLength) {
190 if (validBase64(resource.substring(fixedPartLength, fixedPartLength + randomPartLength))) {
191 account.setResource(resource.substring(0, fixedPartLength + randomPartLength));
192 }
193 }
194 }
195
196 private static boolean validBase64(String input) {
197 try {
198 return Base64.decode(input, Base64.URL_SAFE).length == 3;
199 } catch (Throwable throwable) {
200 return false;
201 }
202 }
203
204 private void changeStatus(final Account.State nextStatus) {
205 synchronized (this) {
206 if (Thread.currentThread().isInterrupted()) {
207 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not changing status to " + nextStatus + " because thread was interrupted");
208 return;
209 }
210 if (account.getStatus() != nextStatus) {
211 if ((nextStatus == Account.State.OFFLINE)
212 && (account.getStatus() != Account.State.CONNECTING)
213 && (account.getStatus() != Account.State.ONLINE)
214 && (account.getStatus() != Account.State.DISABLED)) {
215 return;
216 }
217 if (nextStatus == Account.State.ONLINE) {
218 this.attempt = 0;
219 }
220 account.setStatus(nextStatus);
221 } else {
222 return;
223 }
224 }
225 if (statusListener != null) {
226 statusListener.onStatusChanged(account);
227 }
228 }
229
230 public void prepareNewConnection() {
231 this.lastConnect = SystemClock.elapsedRealtime();
232 this.lastPingSent = SystemClock.elapsedRealtime();
233 this.lastDiscoStarted = Long.MAX_VALUE;
234 this.mWaitingForSmCatchup.set(false);
235 this.changeStatus(Account.State.CONNECTING);
236 }
237
238 public boolean isWaitingForSmCatchup() {
239 return mWaitingForSmCatchup.get();
240 }
241
242 public void incrementSmCatchupMessageCounter() {
243 this.mSmCatchupMessageCounter.incrementAndGet();
244 }
245
246 protected void connect() {
247 if (mXmppConnectionService.areMessagesInitialized()) {
248 mXmppConnectionService.resetSendingToWaiting(account);
249 }
250 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
251 features.encryptionEnabled = false;
252 inSmacksSession = false;
253 isBound = false;
254 this.attempt++;
255 this.verifiedHostname = null; //will be set if user entered hostname is being used or hostname was verified with dnssec
256 try {
257 Socket localSocket;
258 shouldAuthenticate = !account.isOptionSet(Account.OPTION_REGISTER);
259 this.changeStatus(Account.State.CONNECTING);
260 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
261 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
262 if (useTor) {
263 String destination;
264 if (account.getHostname().isEmpty()) {
265 destination = account.getServer();
266 } else {
267 destination = account.getHostname();
268 this.verifiedHostname = destination;
269 }
270 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": connect to " + destination + " via Tor");
271 localSocket = SocksSocketFactory.createSocketOverTor(destination, account.getPort());
272 try {
273 startXmpp(localSocket);
274 } catch (InterruptedException e) {
275 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
276 return;
277 } catch (Exception e) {
278 throw new IOException(e.getMessage());
279 }
280 } else if (extended && !account.getHostname().isEmpty()) {
281
282 this.verifiedHostname = account.getHostname();
283
284 try {
285 InetSocketAddress address = new InetSocketAddress(this.verifiedHostname, account.getPort());
286 features.encryptionEnabled = address.getPort() == 5223;
287 if (features.encryptionEnabled) {
288 try {
289 final TlsFactoryVerifier tlsFactoryVerifier = getTlsFactoryVerifier();
290 localSocket = tlsFactoryVerifier.factory.createSocket();
291 localSocket.connect(address, Config.SOCKET_TIMEOUT * 1000);
292 final SSLSession session = ((SSLSocket) localSocket).getSession();
293 final String domain = account.getJid().getDomain();
294 if (!tlsFactoryVerifier.verifier.verify(domain, this.verifiedHostname, session)) {
295 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate verification failed");
296 throw new StateChangingException(Account.State.TLS_ERROR);
297 }
298 } catch (KeyManagementException e) {
299 throw new StateChangingException(Account.State.TLS_ERROR);
300 }
301 } else {
302 localSocket = new Socket();
303 localSocket.connect(address, Config.SOCKET_TIMEOUT * 1000);
304 }
305 } catch (IOException | IllegalArgumentException e) {
306 throw new UnknownHostException();
307 }
308 try {
309 startXmpp(localSocket);
310 } catch (InterruptedException e) {
311 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
312 return;
313 } catch (Exception e) {
314 throw new IOException(e.getMessage());
315 }
316 } else if (IP.matches(account.getServer())) {
317 localSocket = new Socket();
318 try {
319 localSocket.connect(new InetSocketAddress(account.getServer(), 5222), Config.SOCKET_TIMEOUT * 1000);
320 } catch (IOException e) {
321 throw new UnknownHostException();
322 }
323 try {
324 startXmpp(localSocket);
325 } catch (InterruptedException e) {
326 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
327 return;
328 } catch (Exception e) {
329 throw new IOException(e.getMessage());
330 }
331 } else {
332 final String domain = account.getJid().getDomain();
333 final List<Resolver.Result> results = Resolver.resolve(account.getJid().getDomain());
334 if (Thread.currentThread().isInterrupted()) {
335 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
336 return;
337 }
338 if (results.size() == 0) {
339 Log.e(Config.LOGTAG,account.getJid().asBareJid()+": Resolver results were empty");
340 return;
341 }
342 final Resolver.Result storedBackupResult = mXmppConnectionService.databaseBackend.findResolverResult(domain);
343 if (storedBackupResult != null && !results.contains(storedBackupResult)) {
344 results.add(storedBackupResult);
345 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": loaded backup resolver result from db: " + storedBackupResult);
346 }
347 for (Iterator<Resolver.Result> iterator = results.iterator(); iterator.hasNext(); ) {
348 final Resolver.Result result = iterator.next();
349 if (Thread.currentThread().isInterrupted()) {
350 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
351 return;
352 }
353 try {
354 // if tls is true, encryption is implied and must not be started
355 features.encryptionEnabled = result.isDirectTls();
356 verifiedHostname = result.isAuthenticated() ? result.getHostname().toString() : null;
357 final InetSocketAddress addr;
358 if (result.getIp() != null) {
359 addr = new InetSocketAddress(result.getIp(), result.getPort());
360 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
361 + ": using values from dns " + result.getHostname().toString()
362 + "/" + result.getIp().getHostAddress() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
363 } else {
364 addr = new InetSocketAddress(IDN.toASCII(result.getHostname().toString()), result.getPort());
365 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
366 + ": using values from dns "
367 + result.getHostname().toString() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
368 }
369
370 if (!features.encryptionEnabled) {
371 localSocket = new Socket();
372 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
373 } else {
374 final TlsFactoryVerifier tlsFactoryVerifier = getTlsFactoryVerifier();
375 localSocket = tlsFactoryVerifier.factory.createSocket();
376
377 if (localSocket == null) {
378 throw new IOException("could not initialize ssl socket");
379 }
380
381 SSLSocketHelper.setSecurity((SSLSocket) localSocket);
382 SSLSocketHelper.setHostname((SSLSocket) localSocket, account.getServer());
383 SSLSocketHelper.setApplicationProtocol((SSLSocket) localSocket, "xmpp-client");
384
385 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
386
387 if (!tlsFactoryVerifier.verifier.verify(account.getServer(), verifiedHostname, ((SSLSocket) localSocket).getSession())) {
388 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate verification failed");
389 if (!iterator.hasNext()) {
390 throw new StateChangingException(Account.State.TLS_ERROR);
391 }
392 }
393 }
394 if (startXmpp(localSocket)) {
395 if (!result.equals(storedBackupResult)) {
396 mXmppConnectionService.databaseBackend.saveResolverResult(domain, result);
397 }
398 break; // successfully connected to server that speaks xmpp
399 } else {
400 localSocket.close();
401 if (!iterator.hasNext()) {
402 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
403 }
404 }
405 } catch (final StateChangingException e) {
406 throw e;
407 } catch (InterruptedException e) {
408 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
409 return;
410 } catch (final Throwable e) {
411 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage() + "(" + e.getClass().getName() + ")");
412 if (!iterator.hasNext()) {
413 throw new UnknownHostException();
414 }
415 }
416 }
417 }
418 processStream();
419 } catch (final SecurityException e) {
420 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
421 } catch (final StateChangingException e) {
422 this.changeStatus(e.state);
423 } catch (final UnknownHostException | ConnectException e) {
424 this.changeStatus(Account.State.SERVER_NOT_FOUND);
425 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
426 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
427 } catch (final IOException | XmlPullParserException | NoSuchAlgorithmException e) {
428 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
429 this.changeStatus(Account.State.OFFLINE);
430 this.attempt = Math.max(0, this.attempt - 1);
431 } finally {
432 if (!Thread.currentThread().isInterrupted()) {
433 forceCloseSocket();
434 } else {
435 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not force closing socket because thread was interrupted");
436 }
437 }
438 }
439
440 /**
441 * Starts xmpp protocol, call after connecting to socket
442 *
443 * @return true if server returns with valid xmpp, false otherwise
444 */
445 private boolean startXmpp(Socket socket) throws Exception {
446 if (Thread.currentThread().isInterrupted()) {
447 throw new InterruptedException();
448 }
449 this.socket = socket;
450 tagReader = new XmlReader();
451 if (tagWriter != null) {
452 tagWriter.forceClose();
453 }
454 tagWriter = new TagWriter();
455 tagWriter.setOutputStream(socket.getOutputStream());
456 tagReader.setInputStream(socket.getInputStream());
457 tagWriter.beginDocument();
458 sendStartStream();
459 final Tag tag = tagReader.readTag();
460 if (Thread.currentThread().isInterrupted()) {
461 throw new InterruptedException();
462 }
463 if (socket instanceof SSLSocket) {
464 SSLSocketHelper.log(account, (SSLSocket) socket);
465 }
466 return tag != null && tag.isStart("stream");
467 }
468
469 private TlsFactoryVerifier getTlsFactoryVerifier() throws NoSuchAlgorithmException, KeyManagementException, IOException {
470 final SSLContext sc = SSLSocketHelper.getSSLContext();
471 MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
472 KeyManager[] keyManager;
473 if (account.getPrivateKeyAlias() != null && account.getPassword().isEmpty()) {
474 keyManager = new KeyManager[]{new MyKeyManager()};
475 } else {
476 keyManager = null;
477 }
478 String domain = account.getJid().getDomain();
479 sc.init(keyManager, new X509TrustManager[]{mInteractive ? trustManager.getInteractive(domain) : trustManager.getNonInteractive(domain)}, mXmppConnectionService.getRNG());
480 final SSLSocketFactory factory = sc.getSocketFactory();
481 final DomainHostnameVerifier verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier(), mInteractive);
482 return new TlsFactoryVerifier(factory, verifier);
483 }
484
485 @Override
486 public void run() {
487 synchronized (this) {
488 this.mThread = Thread.currentThread();
489 if (this.mThread.isInterrupted()) {
490 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": aborting connect because thread was interrupted");
491 return;
492 }
493 forceCloseSocket();
494 }
495 connect();
496 }
497
498 private void processStream() throws XmlPullParserException, IOException {
499 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
500 this.mStreamCountDownLatch = streamCountDownLatch;
501 Tag nextTag = tagReader.readTag();
502 while (nextTag != null && !nextTag.isEnd("stream")) {
503 if (nextTag.isStart("error")) {
504 processStreamError(nextTag);
505 } else if (nextTag.isStart("features")) {
506 processStreamFeatures(nextTag);
507 } else if (nextTag.isStart("proceed")) {
508 switchOverToTls();
509 } else if (nextTag.isStart("success")) {
510 final String challenge = tagReader.readElement(nextTag).getContent();
511 try {
512 saslMechanism.getResponse(challenge);
513 } catch (final SaslMechanism.AuthenticationException e) {
514 Log.e(Config.LOGTAG, String.valueOf(e));
515 throw new StateChangingException(Account.State.UNAUTHORIZED);
516 }
517 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": logged in");
518 account.setKey(Account.PINNED_MECHANISM_KEY,
519 String.valueOf(saslMechanism.getPriority()));
520 tagReader.reset();
521 sendStartStream();
522 final Tag tag = tagReader.readTag();
523 if (tag != null && tag.isStart("stream")) {
524 processStream();
525 } else {
526 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
527 }
528 break;
529 } else if (nextTag.isStart("failure")) {
530 final Element failure = tagReader.readElement(nextTag);
531 if (Namespace.SASL.equals(failure.getNamespace())) {
532 final String text = failure.findChildContent("text");
533 if (failure.hasChild("account-disabled") && text != null) {
534 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
535 if (matcher.find()) {
536 try {
537 URL url = new URL(text.substring(matcher.start(), matcher.end()));
538 if (url.getProtocol().equals("https")) {
539 this.redirectionUrl = url;
540 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
541 }
542 } catch (MalformedURLException e) {
543 throw new StateChangingException(Account.State.UNAUTHORIZED);
544 }
545 }
546 }
547 throw new StateChangingException(Account.State.UNAUTHORIZED);
548 } else if (Namespace.TLS.equals(failure.getNamespace())) {
549 throw new StateChangingException(Account.State.TLS_ERROR);
550 } else {
551 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
552 }
553 } else if (nextTag.isStart("challenge")) {
554 final String challenge = tagReader.readElement(nextTag).getContent();
555 final Element response = new Element("response", Namespace.SASL);
556 try {
557 response.setContent(saslMechanism.getResponse(challenge));
558 } catch (final SaslMechanism.AuthenticationException e) {
559 // TODO: Send auth abort tag.
560 Log.e(Config.LOGTAG, e.toString());
561 }
562 tagWriter.writeElement(response);
563 } else if (nextTag.isStart("enabled")) {
564 final Element enabled = tagReader.readElement(nextTag);
565 if ("true".equals(enabled.getAttribute("resume"))) {
566 this.streamId = enabled.getAttribute("id");
567 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
568 + ": stream management(" + smVersion
569 + ") enabled (resumable)");
570 } else {
571 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
572 + ": stream management(" + smVersion + ") enabled");
573 }
574 this.stanzasReceived = 0;
575 this.inSmacksSession = true;
576 final RequestPacket r = new RequestPacket(smVersion);
577 tagWriter.writeStanzaAsync(r);
578 } else if (nextTag.isStart("resumed")) {
579 this.inSmacksSession = true;
580 this.isBound = true;
581 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
582 lastPacketReceived = SystemClock.elapsedRealtime();
583 final Element resumed = tagReader.readElement(nextTag);
584 final String h = resumed.getAttribute("h");
585 try {
586 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
587 final boolean acknowledgedMessages;
588 synchronized (this.mStanzaQueue) {
589 final int serverCount = Integer.parseInt(h);
590 if (serverCount < stanzasSent) {
591 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
592 + ": session resumed with lost packages");
593 stanzasSent = serverCount;
594 } else {
595 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": session resumed");
596 }
597 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
598 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
599 failedStanzas.add(mStanzaQueue.valueAt(i));
600 }
601 mStanzaQueue.clear();
602 }
603 if (acknowledgedMessages) {
604 mXmppConnectionService.updateConversationUi();
605 }
606 Log.d(Config.LOGTAG, "resending " + failedStanzas.size() + " stanzas");
607 for (AbstractAcknowledgeableStanza packet : failedStanzas) {
608 if (packet instanceof MessagePacket) {
609 MessagePacket message = (MessagePacket) packet;
610 mXmppConnectionService.markMessage(account,
611 message.getTo().asBareJid(),
612 message.getId(),
613 Message.STATUS_UNSEND);
614 }
615 sendPacket(packet);
616 }
617 } catch (final NumberFormatException ignored) {
618 }
619 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
620 changeStatus(Account.State.ONLINE);
621 } else if (nextTag.isStart("r")) {
622 tagReader.readElement(nextTag);
623 if (Config.EXTENDED_SM_LOGGING) {
624 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
625 }
626 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
627 tagWriter.writeStanzaAsync(ack);
628 } else if (nextTag.isStart("a")) {
629 boolean accountUiNeedsRefresh = false;
630 synchronized (NotificationService.CATCHUP_LOCK) {
631 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
632 int count = mSmCatchupMessageCounter.get();
633 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": SM catchup complete (" + count + ")");
634 accountUiNeedsRefresh = true;
635 if (count > 0) {
636 mXmppConnectionService.getNotificationService().finishBacklog(true, account);
637 }
638 }
639 }
640 if (accountUiNeedsRefresh) {
641 mXmppConnectionService.updateAccountUi();
642 }
643 final Element ack = tagReader.readElement(nextTag);
644 lastPacketReceived = SystemClock.elapsedRealtime();
645 try {
646 final boolean acknowledgedMessages;
647 synchronized (this.mStanzaQueue) {
648 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
649 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence);
650 }
651 if (acknowledgedMessages) {
652 mXmppConnectionService.updateConversationUi();
653 }
654 } catch (NumberFormatException | NullPointerException e) {
655 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server send ack without sequence number");
656 }
657 } else if (nextTag.isStart("failed")) {
658 Element failed = tagReader.readElement(nextTag);
659 try {
660 final int serverCount = Integer.parseInt(failed.getAttribute("h"));
661 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed but server acknowledged stanza #" + serverCount);
662 final boolean acknowledgedMessages;
663 synchronized (this.mStanzaQueue) {
664 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
665 }
666 if (acknowledgedMessages) {
667 mXmppConnectionService.updateConversationUi();
668 }
669 } catch (NumberFormatException | NullPointerException e) {
670 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
671 }
672 resetStreamId();
673 sendBindRequest();
674 } else if (nextTag.isStart("iq")) {
675 processIq(nextTag);
676 } else if (nextTag.isStart("message")) {
677 processMessage(nextTag);
678 } else if (nextTag.isStart("presence")) {
679 processPresence(nextTag);
680 }
681 nextTag = tagReader.readTag();
682 }
683 if (nextTag != null && nextTag.isEnd("stream")) {
684 streamCountDownLatch.countDown();
685 }
686 }
687
688 private boolean acknowledgeStanzaUpTo(int serverCount) {
689 if (serverCount > stanzasSent) {
690 Log.e(Config.LOGTAG, "server acknowledged more stanzas than we sent. serverCount=" + serverCount + ", ourCount=" + stanzasSent);
691 }
692 boolean acknowledgedMessages = false;
693 for (int i = 0; i < mStanzaQueue.size(); ++i) {
694 if (serverCount >= mStanzaQueue.keyAt(i)) {
695 if (Config.EXTENDED_SM_LOGGING) {
696 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
697 }
698 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
699 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
700 MessagePacket packet = (MessagePacket) stanza;
701 acknowledgedMessages |= acknowledgedListener.onMessageAcknowledged(account, packet.getId());
702 }
703 mStanzaQueue.removeAt(i);
704 i--;
705 }
706 }
707 return acknowledgedMessages;
708 }
709
710 private @NonNull
711 Element processPacket(final Tag currentTag, final int packetType) throws XmlPullParserException, IOException {
712 Element element;
713 switch (packetType) {
714 case PACKET_IQ:
715 element = new IqPacket();
716 break;
717 case PACKET_MESSAGE:
718 element = new MessagePacket();
719 break;
720 case PACKET_PRESENCE:
721 element = new PresencePacket();
722 break;
723 default:
724 throw new AssertionError("Should never encounter invalid type");
725 }
726 element.setAttributes(currentTag.getAttributes());
727 Tag nextTag = tagReader.readTag();
728 if (nextTag == null) {
729 throw new IOException("interrupted mid tag");
730 }
731 while (!nextTag.isEnd(element.getName())) {
732 if (!nextTag.isNo()) {
733 final Element child = tagReader.readElement(nextTag);
734 final String type = currentTag.getAttribute("type");
735 if (packetType == PACKET_IQ
736 && "jingle".equals(child.getName())
737 && ("set".equalsIgnoreCase(type) || "get"
738 .equalsIgnoreCase(type))) {
739 element = new JinglePacket();
740 element.setAttributes(currentTag.getAttributes());
741 }
742 element.addChild(child);
743 }
744 nextTag = tagReader.readTag();
745 if (nextTag == null) {
746 throw new IOException("interrupted mid tag");
747 }
748 }
749 if (stanzasReceived == Integer.MAX_VALUE) {
750 resetStreamId();
751 throw new IOException("time to restart the session. cant handle >2 billion pcks");
752 }
753 if (inSmacksSession) {
754 ++stanzasReceived;
755 } else if (features.sm()) {
756 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not counting stanza(" + element.getClass().getSimpleName() + "). Not in smacks session.");
757 }
758 lastPacketReceived = SystemClock.elapsedRealtime();
759 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
760 Log.d(Config.LOGTAG, "[background stanza] " + element);
761 }
762 return element;
763 }
764
765 private void processIq(final Tag currentTag) throws XmlPullParserException, IOException {
766 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
767 if (!packet.valid()) {
768 Log.e(Config.LOGTAG, "encountered invalid iq from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
769 return;
770 }
771 if (packet instanceof JinglePacket) {
772 if (this.jingleListener != null) {
773 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
774 }
775 } else {
776 OnIqPacketReceived callback = null;
777 synchronized (this.packetCallbacks) {
778 if (packetCallbacks.containsKey(packet.getId())) {
779 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
780 // Packets to the server should have responses from the server
781 if (packetCallbackDuple.first.toServer(account)) {
782 if (packet.fromServer(account)) {
783 callback = packetCallbackDuple.second;
784 packetCallbacks.remove(packet.getId());
785 } else {
786 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
787 }
788 } else {
789 if (packet.getFrom() != null && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
790 callback = packetCallbackDuple.second;
791 packetCallbacks.remove(packet.getId());
792 } else {
793 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
794 }
795 }
796 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
797 callback = this.unregisteredIqListener;
798 }
799 }
800 if (callback != null) {
801 try {
802 callback.onIqPacketReceived(account, packet);
803 } catch (StateChangingError error) {
804 throw new StateChangingException(error.state);
805 }
806 }
807 }
808 }
809
810 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
811 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
812 if (!packet.valid()) {
813 Log.e(Config.LOGTAG, "encountered invalid message from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
814 return;
815 }
816 this.messageListener.onMessagePacketReceived(account, packet);
817 }
818
819 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
820 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
821 if (!packet.valid()) {
822 Log.e(Config.LOGTAG, "encountered invalid presence from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
823 return;
824 }
825 this.presenceListener.onPresencePacketReceived(account, packet);
826 }
827
828 private void sendStartTLS() throws IOException {
829 final Tag startTLS = Tag.empty("starttls");
830 startTLS.setAttribute("xmlns", Namespace.TLS);
831 tagWriter.writeTag(startTLS);
832 }
833
834 private void switchOverToTls() throws XmlPullParserException, IOException {
835 tagReader.readTag();
836 try {
837 final TlsFactoryVerifier tlsFactoryVerifier = getTlsFactoryVerifier();
838 final InetAddress address = socket == null ? null : socket.getInetAddress();
839
840 if (address == null) {
841 throw new IOException("could not setup ssl");
842 }
843
844 final SSLSocket sslSocket = (SSLSocket) tlsFactoryVerifier.factory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
845
846
847 if (sslSocket == null) {
848 throw new IOException("could not initialize ssl socket");
849 }
850
851 SSLSocketHelper.setSecurity(sslSocket);
852 SSLSocketHelper.setHostname(sslSocket, account.getServer());
853 SSLSocketHelper.setApplicationProtocol(sslSocket, "xmpp-client");
854
855 if (!tlsFactoryVerifier.verifier.verify(account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
856 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate verification failed");
857 throw new StateChangingException(Account.State.TLS_ERROR);
858 }
859 tagReader.setInputStream(sslSocket.getInputStream());
860 tagWriter.setOutputStream(sslSocket.getOutputStream());
861 sendStartStream();
862 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
863 features.encryptionEnabled = true;
864 final Tag tag = tagReader.readTag();
865 if (tag != null && tag.isStart("stream")) {
866 SSLSocketHelper.log(account, sslSocket);
867 processStream();
868 } else {
869 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
870 }
871 sslSocket.close();
872 } catch (final NoSuchAlgorithmException | KeyManagementException e1) {
873 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate verification failed");
874 throw new StateChangingException(Account.State.TLS_ERROR);
875 }
876 }
877
878 private void processStreamFeatures(final Tag currentTag) throws XmlPullParserException, IOException {
879 this.streamFeatures = tagReader.readElement(currentTag);
880 final boolean isSecure = features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS;
881 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
882 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
883 sendStartTLS();
884 } else if (this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
885 if (isSecure) {
886 sendRegistryRequest();
887 } else {
888 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
889 }
890 } else if (!this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
891 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
892 } else if (this.streamFeatures.hasChild("mechanisms") && shouldAuthenticate && isSecure) {
893 authenticate();
894 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
895 if (Config.EXTENDED_SM_LOGGING) {
896 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resuming after stanza #" + stanzasReceived);
897 }
898 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
899 this.mSmCatchupMessageCounter.set(0);
900 this.mWaitingForSmCatchup.set(true);
901 this.tagWriter.writeStanzaAsync(resume);
902 } else if (needsBinding) {
903 if (this.streamFeatures.hasChild("bind") && isSecure) {
904 sendBindRequest();
905 } else {
906 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
907 }
908 }
909 }
910
911 private void authenticate() throws IOException {
912 final List<String> mechanisms = extractMechanisms(streamFeatures
913 .findChild("mechanisms"));
914 final Element auth = new Element("auth", Namespace.SASL);
915 if (mechanisms.contains("EXTERNAL") && account.getPrivateKeyAlias() != null) {
916 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
917 } else if (mechanisms.contains("SCRAM-SHA-256")) {
918 saslMechanism = new ScramSha256(tagWriter, account, mXmppConnectionService.getRNG());
919 } else if (mechanisms.contains("SCRAM-SHA-1")) {
920 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
921 } else if (mechanisms.contains("PLAIN") && !account.getJid().getDomain().equals("nimbuzz.com")) {
922 saslMechanism = new Plain(tagWriter, account);
923 } else if (mechanisms.contains("DIGEST-MD5")) {
924 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
925 } else if (mechanisms.contains("ANONYMOUS")) {
926 saslMechanism = new Anonymous(tagWriter, account, mXmppConnectionService.getRNG());
927 }
928 if (saslMechanism != null) {
929 final int pinnedMechanism = account.getKeyAsInt(Account.PINNED_MECHANISM_KEY, -1);
930 if (pinnedMechanism > saslMechanism.getPriority()) {
931 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
932 " has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
933 ") than pinned priority (" + pinnedMechanism +
934 "). Possible downgrade attack?");
935 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
936 }
937 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
938 auth.setAttribute("mechanism", saslMechanism.getMechanism());
939 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
940 auth.setContent(saslMechanism.getClientFirstMessage());
941 }
942 tagWriter.writeElement(auth);
943 } else {
944 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
945 }
946 }
947
948 private List<String> extractMechanisms(final Element stream) {
949 final ArrayList<String> mechanisms = new ArrayList<>(stream
950 .getChildren().size());
951 for (final Element child : stream.getChildren()) {
952 mechanisms.add(child.getContent());
953 }
954 return mechanisms;
955 }
956
957 private void sendRegistryRequest() {
958 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
959 register.query("jabber:iq:register");
960 register.setTo(Jid.of(account.getServer()));
961 sendUnmodifiedIqPacket(register, (account, packet) -> {
962 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
963 return;
964 }
965 if (packet.getType() == IqPacket.TYPE.ERROR) {
966 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
967 }
968 final Element query = packet.query("jabber:iq:register");
969 if (query.hasChild("username") && (query.hasChild("password"))) {
970 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
971 final Element username = new Element("username").setContent(account.getUsername());
972 final Element password = new Element("password").setContent(account.getPassword());
973 register1.query("jabber:iq:register").addChild(username);
974 register1.query().addChild(password);
975 register1.setFrom(account.getJid().asBareJid());
976 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
977 } else if (query.hasChild("x", Namespace.DATA)) {
978 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
979 final Element blob = query.findChild("data", "urn:xmpp:bob");
980 final String id = packet.getId();
981 InputStream is;
982 if (blob != null) {
983 try {
984 final String base64Blob = blob.getContent();
985 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
986 is = new ByteArrayInputStream(strBlob);
987 } catch (Exception e) {
988 is = null;
989 }
990 } else {
991 try {
992 Field field = data.getFieldByName("url");
993 URL url = field != null && field.getValue() != null ? new URL(field.getValue()) : null;
994 is = url != null ? url.openStream() : null;
995 } catch (IOException e) {
996 is = null;
997 }
998 }
999
1000 if (is != null) {
1001 Bitmap captcha = BitmapFactory.decodeStream(is);
1002 try {
1003 if (mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha)) {
1004 return;
1005 }
1006 } catch (Exception e) {
1007 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1008 }
1009 }
1010 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1011 } else if (query.hasChild("instructions") || query.hasChild("x", Namespace.OOB)) {
1012 final String instructions = query.findChildContent("instructions");
1013 final Element oob = query.findChild("x", Namespace.OOB);
1014 final String url = oob == null ? null : oob.findChildContent("url");
1015 if (url != null) {
1016 setAccountCreationFailed(url);
1017 } else if (instructions != null) {
1018 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
1019 if (matcher.find()) {
1020 setAccountCreationFailed(instructions.substring(matcher.start(), matcher.end()));
1021 }
1022 }
1023 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1024 }
1025 }, true);
1026 }
1027
1028 private void setAccountCreationFailed(String url) {
1029 if (url != null) {
1030 try {
1031 this.redirectionUrl = new URL(url);
1032 if (this.redirectionUrl.getProtocol().equals("https")) {
1033 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1034 }
1035 } catch (MalformedURLException e) {
1036 //fall through
1037 }
1038 }
1039 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1040 }
1041
1042 public URL getRedirectionUrl() {
1043 return this.redirectionUrl;
1044 }
1045
1046 public void resetEverything() {
1047 resetAttemptCount(true);
1048 resetStreamId();
1049 clearIqCallbacks();
1050 this.stanzasSent = 0;
1051 mStanzaQueue.clear();
1052 this.redirectionUrl = null;
1053 synchronized (this.disco) {
1054 disco.clear();
1055 }
1056 }
1057
1058 private void sendBindRequest() {
1059 try {
1060 mXmppConnectionService.restoredFromDatabaseLatch.await();
1061 } catch (InterruptedException e) {
1062 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while waiting for DB restore during bind");
1063 return;
1064 }
1065 clearIqCallbacks();
1066 if (account.getJid().isBareJid()) {
1067 account.setResource(this.createNewResource());
1068 } else {
1069 fixResource(mXmppConnectionService, account);
1070 }
1071 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1072 final String resource = Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1073 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1074 this.sendUnmodifiedIqPacket(iq, (account, packet) -> {
1075 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1076 return;
1077 }
1078 final Element bind = packet.findChild("bind");
1079 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1080 isBound = true;
1081 final Element jid = bind.findChild("jid");
1082 if (jid != null && jid.getContent() != null) {
1083 try {
1084 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1085 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1086 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server tried to re-assign domain to " + assignedJid.getDomain());
1087 throw new StateChangingError(Account.State.BIND_FAILURE);
1088 }
1089 if (account.setJid(assignedJid)) {
1090 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": jid changed during bind. updating database");
1091 mXmppConnectionService.databaseBackend.updateAccount(account);
1092 }
1093 if (streamFeatures.hasChild("session")
1094 && !streamFeatures.findChild("session").hasChild("optional")) {
1095 sendStartSession();
1096 } else {
1097 sendPostBindInitialization();
1098 }
1099 return;
1100 } catch (final IllegalArgumentException e) {
1101 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server reported invalid jid (" + jid.getContent() + ") on bind");
1102 }
1103 } else {
1104 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure. (no jid)");
1105 }
1106 } else {
1107 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet.toString());
1108 }
1109 final Element error = packet.findChild("error");
1110 if (packet.getType() == IqPacket.TYPE.ERROR && error != null && error.hasChild("conflict")) {
1111 account.setResource(createNewResource());
1112 }
1113 throw new StateChangingError(Account.State.BIND_FAILURE);
1114 }, true);
1115 }
1116
1117 private void clearIqCallbacks() {
1118 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1119 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1120 synchronized (this.packetCallbacks) {
1121 if (this.packetCallbacks.size() == 0) {
1122 return;
1123 }
1124 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": clearing " + this.packetCallbacks.size() + " iq callbacks");
1125 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
1126 while (iterator.hasNext()) {
1127 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1128 callbacks.add(entry.second);
1129 iterator.remove();
1130 }
1131 }
1132 for (OnIqPacketReceived callback : callbacks) {
1133 try {
1134 callback.onIqPacketReceived(account, failurePacket);
1135 } catch (StateChangingError error) {
1136 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": caught StateChangingError(" + error.state.toString() + ") while clearing callbacks");
1137 //ignore
1138 }
1139 }
1140 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
1141 }
1142
1143 public void sendDiscoTimeout() {
1144 if (mWaitForDisco.compareAndSet(true, false)) {
1145 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1146 finalizeBind();
1147 }
1148 }
1149
1150 private void sendStartSession() {
1151 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": sending legacy session to outdated server");
1152 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1153 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1154 this.sendUnmodifiedIqPacket(startSession, (account, packet) -> {
1155 if (packet.getType() == IqPacket.TYPE.RESULT) {
1156 sendPostBindInitialization();
1157 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1158 throw new StateChangingError(Account.State.SESSION_FAILURE);
1159 }
1160 }, true);
1161 }
1162
1163 private void sendPostBindInitialization() {
1164 smVersion = 0;
1165 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
1166 smVersion = 3;
1167 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
1168 smVersion = 2;
1169 }
1170 if (smVersion != 0) {
1171 synchronized (this.mStanzaQueue) {
1172 final EnablePacket enable = new EnablePacket(smVersion);
1173 tagWriter.writeStanzaAsync(enable);
1174 stanzasSent = 0;
1175 mStanzaQueue.clear();
1176 }
1177 }
1178 features.carbonsEnabled = false;
1179 features.blockListRequested = false;
1180 synchronized (this.disco) {
1181 this.disco.clear();
1182 }
1183 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1184 mPendingServiceDiscoveries.set(0);
1185 if (smVersion == 0 || Patches.DISCO_EXCEPTIONS.contains(account.getJid().getDomain())) {
1186 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": do not wait for service discovery");
1187 mWaitForDisco.set(false);
1188 } else {
1189 mWaitForDisco.set(true);
1190 }
1191 lastDiscoStarted = SystemClock.elapsedRealtime();
1192 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1193 Element caps = streamFeatures.findChild("c");
1194 final String hash = caps == null ? null : caps.getAttribute("hash");
1195 final String ver = caps == null ? null : caps.getAttribute("ver");
1196 ServiceDiscoveryResult discoveryResult = null;
1197 if (hash != null && ver != null) {
1198 discoveryResult = mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1199 }
1200 final boolean requestDiscoItemsFirst = !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1201 if (requestDiscoItemsFirst) {
1202 sendServiceDiscoveryItems(Jid.of(account.getServer()));
1203 }
1204 if (discoveryResult == null) {
1205 sendServiceDiscoveryInfo(Jid.of(account.getServer()));
1206 } else {
1207 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1208 disco.put(Jid.of(account.getServer()), discoveryResult);
1209 }
1210 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1211 if (!requestDiscoItemsFirst) {
1212 sendServiceDiscoveryItems(Jid.of(account.getServer()));
1213 }
1214
1215 if (!mWaitForDisco.get()) {
1216 finalizeBind();
1217 }
1218 this.lastSessionStarted = SystemClock.elapsedRealtime();
1219 }
1220
1221 private void sendServiceDiscoveryInfo(final Jid jid) {
1222 mPendingServiceDiscoveries.incrementAndGet();
1223 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1224 iq.setTo(jid);
1225 iq.query("http://jabber.org/protocol/disco#info");
1226 this.sendIqPacket(iq, (account, packet) -> {
1227 if (packet.getType() == IqPacket.TYPE.RESULT) {
1228 boolean advancedStreamFeaturesLoaded;
1229 synchronized (XmppConnection.this.disco) {
1230 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1231 if (jid.equals(Jid.of(account.getServer()))) {
1232 mXmppConnectionService.databaseBackend.insertDiscoveryResult(result);
1233 }
1234 disco.put(jid, result);
1235 advancedStreamFeaturesLoaded = disco.containsKey(Jid.of(account.getServer()))
1236 && disco.containsKey(account.getJid().asBareJid());
1237 }
1238 if (advancedStreamFeaturesLoaded && (jid.equals(Jid.of(account.getServer())) || jid.equals(account.getJid().asBareJid()))) {
1239 enableAdvancedStreamFeatures();
1240 }
1241 } else {
1242 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco info for " + jid.toString());
1243 }
1244 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1245 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1246 && mWaitForDisco.compareAndSet(true, false)) {
1247 finalizeBind();
1248 }
1249 }
1250 });
1251 }
1252
1253 private void finalizeBind() {
1254 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
1255 if (bindListener != null) {
1256 bindListener.onBind(account);
1257 }
1258 changeStatus(Account.State.ONLINE);
1259 }
1260
1261 private void enableAdvancedStreamFeatures() {
1262 if (getFeatures().carbons() && !features.carbonsEnabled) {
1263 sendEnableCarbons();
1264 }
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 }
1273
1274 private void sendServiceDiscoveryItems(final Jid server) {
1275 mPendingServiceDiscoveries.incrementAndGet();
1276 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1277 iq.setTo(Jid.ofDomain(server.getDomain()));
1278 iq.query("http://jabber.org/protocol/disco#items");
1279 this.sendIqPacket(iq, (account, packet) -> {
1280 if (packet.getType() == IqPacket.TYPE.RESULT) {
1281 HashSet<Jid> items = new HashSet<Jid>();
1282 final List<Element> elements = packet.query().getChildren();
1283 for (final Element element : elements) {
1284 if (element.getName().equals("item")) {
1285 final Jid jid = InvalidJid.getNullForInvalid(element.getAttributeAsJid("jid"));
1286 if (jid != null && !jid.equals(Jid.of(account.getServer()))) {
1287 items.add(jid);
1288 }
1289 }
1290 }
1291 for (Jid jid : items) {
1292 sendServiceDiscoveryInfo(jid);
1293 }
1294 } else {
1295 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco items of " + server);
1296 }
1297 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1298 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1299 && mWaitForDisco.compareAndSet(true, false)) {
1300 finalizeBind();
1301 }
1302 }
1303 });
1304 }
1305
1306 private void sendEnableCarbons() {
1307 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1308 iq.addChild("enable", "urn:xmpp:carbons:2");
1309 this.sendIqPacket(iq, new OnIqPacketReceived() {
1310
1311 @Override
1312 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1313 if (!packet.hasChild("error")) {
1314 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1315 + ": successfully enabled carbons");
1316 features.carbonsEnabled = true;
1317 } else {
1318 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1319 + ": error enableing carbons " + packet.toString());
1320 }
1321 }
1322 });
1323 }
1324
1325 private void processStreamError(final Tag currentTag) throws XmlPullParserException, IOException {
1326 final Element streamError = tagReader.readElement(currentTag);
1327 if (streamError == null) {
1328 return;
1329 }
1330 if (streamError.hasChild("conflict")) {
1331 account.setResource(createNewResource());
1332 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": switching resource due to conflict (" + account.getResource() + ")");
1333 throw new IOException();
1334 } else if (streamError.hasChild("host-unknown")) {
1335 throw new StateChangingException(Account.State.HOST_UNKNOWN);
1336 } else if (streamError.hasChild("policy-violation")) {
1337 throw new StateChangingException(Account.State.POLICY_VIOLATION);
1338 } else {
1339 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError.toString());
1340 throw new StateChangingException(Account.State.STREAM_ERROR);
1341 }
1342 }
1343
1344 private void sendStartStream() throws IOException {
1345 final Tag stream = Tag.start("stream:stream");
1346 stream.setAttribute("to", account.getServer());
1347 stream.setAttribute("version", "1.0");
1348 stream.setAttribute("xml:lang", "en");
1349 stream.setAttribute("xmlns", "jabber:client");
1350 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1351 tagWriter.writeTag(stream);
1352 }
1353
1354 private String createNewResource() {
1355 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
1356 }
1357
1358 private String nextRandomId() {
1359 return nextRandomId(false);
1360 }
1361
1362 private String nextRandomId(boolean s) {
1363 return CryptoHelper.random(s ? 3 : 9, mXmppConnectionService.getRNG());
1364 }
1365
1366 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1367 packet.setFrom(account.getJid());
1368 return this.sendUnmodifiedIqPacket(packet, callback, false);
1369 }
1370
1371 public synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
1372 if (packet.getId() == null) {
1373 packet.setAttribute("id", nextRandomId());
1374 }
1375 if (callback != null) {
1376 synchronized (this.packetCallbacks) {
1377 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1378 }
1379 }
1380 this.sendPacket(packet, force);
1381 return packet.getId();
1382 }
1383
1384 public void sendMessagePacket(final MessagePacket packet) {
1385 this.sendPacket(packet);
1386 }
1387
1388 public void sendPresencePacket(final PresencePacket packet) {
1389 this.sendPacket(packet);
1390 }
1391
1392 private synchronized void sendPacket(final AbstractStanza packet) {
1393 sendPacket(packet, false);
1394 }
1395
1396 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
1397 if (stanzasSent == Integer.MAX_VALUE) {
1398 resetStreamId();
1399 disconnect(true);
1400 return;
1401 }
1402 synchronized (this.mStanzaQueue) {
1403 if (force || isBound) {
1404 tagWriter.writeStanzaAsync(packet);
1405 } else {
1406 Log.d(Config.LOGTAG, account.getJid().asBareJid() + " do not write stanza to unbound stream " + packet.toString());
1407 }
1408 if (packet instanceof AbstractAcknowledgeableStanza) {
1409 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1410
1411 if (this.mStanzaQueue.size() != 0) {
1412 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
1413 if (currentHighestKey != stanzasSent) {
1414 throw new AssertionError("Stanza count messed up");
1415 }
1416 }
1417
1418 ++stanzasSent;
1419 this.mStanzaQueue.append(stanzasSent, stanza);
1420 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
1421 if (Config.EXTENDED_SM_LOGGING) {
1422 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1423 }
1424 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1425 }
1426 }
1427 }
1428 }
1429
1430 public void sendPing() {
1431 if (!r()) {
1432 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1433 iq.setFrom(account.getJid());
1434 iq.addChild("ping", "urn:xmpp:ping");
1435 this.sendIqPacket(iq, null);
1436 }
1437 this.lastPingSent = SystemClock.elapsedRealtime();
1438 }
1439
1440 public void setOnMessagePacketReceivedListener(
1441 final OnMessagePacketReceived listener) {
1442 this.messageListener = listener;
1443 }
1444
1445 public void setOnUnregisteredIqPacketReceivedListener(
1446 final OnIqPacketReceived listener) {
1447 this.unregisteredIqListener = listener;
1448 }
1449
1450 public void setOnPresencePacketReceivedListener(
1451 final OnPresencePacketReceived listener) {
1452 this.presenceListener = listener;
1453 }
1454
1455 public void setOnJinglePacketReceivedListener(
1456 final OnJinglePacketReceived listener) {
1457 this.jingleListener = listener;
1458 }
1459
1460 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1461 this.statusListener = listener;
1462 }
1463
1464 public void setOnBindListener(final OnBindListener listener) {
1465 this.bindListener = listener;
1466 }
1467
1468 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1469 this.acknowledgedListener = listener;
1470 }
1471
1472 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1473 this.advancedStreamFeaturesLoadedListeners.add(listener);
1474 }
1475
1476 private void forceCloseSocket() {
1477 if (socket != null) {
1478 try {
1479 socket.close();
1480 } catch (IOException e) {
1481 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": io exception " + e.getMessage() + " during force close");
1482 }
1483 } else {
1484 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": socket was null during force close");
1485 }
1486 }
1487
1488 public void interrupt() {
1489 if (this.mThread != null) {
1490 this.mThread.interrupt();
1491 }
1492 }
1493
1494 public void disconnect(final boolean force) {
1495 interrupt();
1496 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + Boolean.toString(force));
1497 if (force) {
1498 forceCloseSocket();
1499 } else {
1500 final TagWriter currentTagWriter = this.tagWriter;
1501 if (currentTagWriter.isActive()) {
1502 currentTagWriter.finish();
1503 final Socket currentSocket = this.socket;
1504 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
1505 try {
1506 currentTagWriter.await(1, TimeUnit.SECONDS);
1507 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
1508 currentTagWriter.writeTag(Tag.end("stream:stream"));
1509 if (streamCountDownLatch != null) {
1510 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
1511 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote ended stream");
1512 } else {
1513 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote has not closed socket. force closing");
1514 }
1515 }
1516 } catch (InterruptedException e) {
1517 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while gracefully closing stream");
1518 } catch (final IOException e) {
1519 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": io exception during disconnect (" + e.getMessage() + ")");
1520 } finally {
1521 FileBackend.close(currentSocket);
1522 }
1523 } else {
1524 forceCloseSocket();
1525 }
1526 }
1527 }
1528
1529 private void resetStreamId() {
1530 this.streamId = null;
1531 }
1532
1533 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
1534 synchronized (this.disco) {
1535 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
1536 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
1537 if (cursor.getValue().getFeatures().contains(feature)) {
1538 items.add(cursor);
1539 }
1540 }
1541 return items;
1542 }
1543 }
1544
1545 public Jid findDiscoItemByFeature(final String feature) {
1546 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
1547 if (items.size() >= 1) {
1548 return items.get(0).getKey();
1549 }
1550 return null;
1551 }
1552
1553 public boolean r() {
1554 if (getFeatures().sm()) {
1555 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1556 return true;
1557 } else {
1558 return false;
1559 }
1560 }
1561
1562 public List<String> getMucServersWithholdAccount() {
1563 List<String> servers = getMucServers();
1564 servers.remove(account.getServer());
1565 return servers;
1566 }
1567
1568 public List<String> getMucServers() {
1569 List<String> servers = new ArrayList<>();
1570 synchronized (this.disco) {
1571 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
1572 final ServiceDiscoveryResult value = cursor.getValue();
1573 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
1574 && value.hasIdentity("conference", "text")
1575 && !value.getFeatures().contains("jabber:iq:gateway")
1576 && !value.hasIdentity("conference", "irc")) {
1577 servers.add(cursor.getKey().toString());
1578 }
1579 }
1580 }
1581 return servers;
1582 }
1583
1584 public String getMucServer() {
1585 List<String> servers = getMucServers();
1586 return servers.size() > 0 ? servers.get(0) : null;
1587 }
1588
1589 public int getTimeToNextAttempt() {
1590 final int interval = Math.min((int) (25 * Math.pow(1.3, 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 blocking() {
1776 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.BLOCKING);
1777 }
1778
1779 public boolean spamReporting() {
1780 return hasDiscoFeature(Jid.of(account.getServer()), "urn:xmpp:reporting:reason:spam:0");
1781 }
1782
1783 public boolean flexibleOfflineMessageRetrieval() {
1784 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
1785 }
1786
1787 public boolean register() {
1788 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.REGISTER);
1789 }
1790
1791 public boolean sm() {
1792 return streamId != null
1793 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1794 }
1795
1796 public boolean csi() {
1797 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1798 }
1799
1800 public boolean pep() {
1801 synchronized (XmppConnection.this.disco) {
1802 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1803 return info != null && info.hasIdentity("pubsub", "pep");
1804 }
1805 }
1806
1807 public boolean pepPersistent() {
1808 synchronized (XmppConnection.this.disco) {
1809 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1810 return info != null && info.getFeatures().contains("http://jabber.org/protocol/pubsub#persistent-items");
1811 }
1812 }
1813
1814 public boolean pepPublishOptions() {
1815 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
1816 }
1817
1818 public boolean pepOmemoWhitelisted() {
1819 return hasDiscoFeature(account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
1820 }
1821
1822 public boolean mam() {
1823 return MessageArchiveService.Version.has(getAccountFeatures());
1824 }
1825
1826 public List<String> getAccountFeatures() {
1827 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
1828 return result == null ? Collections.emptyList() : result.getFeatures();
1829 }
1830
1831 public boolean push() {
1832 return hasDiscoFeature(account.getJid().asBareJid(), "urn:xmpp:push:0")
1833 || hasDiscoFeature(Jid.of(account.getServer()), "urn:xmpp:push:0");
1834 }
1835
1836 public boolean rosterVersioning() {
1837 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1838 }
1839
1840 public void setBlockListRequested(boolean value) {
1841 this.blockListRequested = value;
1842 }
1843
1844 public boolean p1S3FileTransfer() {
1845 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.P1_S3_FILE_TRANSFER);
1846 }
1847
1848 public boolean httpUpload(long filesize) {
1849 if (Config.DISABLE_HTTP_UPLOAD) {
1850 return false;
1851 } else {
1852 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1853 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1854 if (items.size() > 0) {
1855 try {
1856 long maxsize = Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1857 if (filesize <= maxsize) {
1858 return true;
1859 } else {
1860 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": http upload is not available for files with size " + filesize + " (max is " + maxsize + ")");
1861 return false;
1862 }
1863 } catch (Exception e) {
1864 return true;
1865 }
1866 }
1867 }
1868 return false;
1869 }
1870 }
1871
1872 public boolean useLegacyHttpUpload() {
1873 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
1874 }
1875
1876 public long getMaxHttpUploadSize() {
1877 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1878 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1879 if (items.size() > 0) {
1880 try {
1881 return Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1882 } catch (Exception e) {
1883 //ignored
1884 }
1885 }
1886 }
1887 return -1;
1888 }
1889
1890 public boolean stanzaIds() {
1891 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
1892 }
1893 }
1894}