1package eu.siacs.conversations.xmpp;
2
3import android.content.Context;
4import android.graphics.Bitmap;
5import android.graphics.BitmapFactory;
6import android.os.SystemClock;
7import android.security.KeyChain;
8import android.support.annotation.NonNull;
9import android.util.Base64;
10import android.util.Log;
11import android.util.Pair;
12import android.util.SparseArray;
13
14import org.xmlpull.v1.XmlPullParserException;
15
16import java.io.ByteArrayInputStream;
17import java.io.IOException;
18import java.io.InputStream;
19import java.net.ConnectException;
20import java.net.IDN;
21import java.net.InetAddress;
22import java.net.InetSocketAddress;
23import java.net.MalformedURLException;
24import java.net.Socket;
25import java.net.URL;
26import java.net.UnknownHostException;
27import java.security.KeyManagementException;
28import java.security.NoSuchAlgorithmException;
29import java.security.Principal;
30import java.security.PrivateKey;
31import java.security.cert.X509Certificate;
32import java.util.ArrayList;
33import java.util.Arrays;
34import java.util.Collections;
35import java.util.HashMap;
36import java.util.HashSet;
37import java.util.Hashtable;
38import java.util.Iterator;
39import java.util.List;
40import java.util.Map.Entry;
41import java.util.Set;
42import java.util.concurrent.CountDownLatch;
43import java.util.concurrent.TimeUnit;
44import java.util.concurrent.atomic.AtomicBoolean;
45import java.util.concurrent.atomic.AtomicInteger;
46import java.util.regex.Matcher;
47
48import javax.net.ssl.KeyManager;
49import javax.net.ssl.SSLContext;
50import javax.net.ssl.SSLSocket;
51import javax.net.ssl.SSLSocketFactory;
52import javax.net.ssl.X509KeyManager;
53import javax.net.ssl.X509TrustManager;
54
55import eu.siacs.conversations.Config;
56import eu.siacs.conversations.R;
57import eu.siacs.conversations.crypto.DomainHostnameVerifier;
58import eu.siacs.conversations.crypto.XmppDomainVerifier;
59import eu.siacs.conversations.crypto.axolotl.AxolotlService;
60import eu.siacs.conversations.crypto.sasl.Anonymous;
61import eu.siacs.conversations.crypto.sasl.DigestMd5;
62import eu.siacs.conversations.crypto.sasl.External;
63import eu.siacs.conversations.crypto.sasl.Plain;
64import eu.siacs.conversations.crypto.sasl.SaslMechanism;
65import eu.siacs.conversations.crypto.sasl.ScramSha1;
66import eu.siacs.conversations.crypto.sasl.ScramSha256;
67import eu.siacs.conversations.entities.Account;
68import eu.siacs.conversations.entities.Message;
69import eu.siacs.conversations.entities.ServiceDiscoveryResult;
70import eu.siacs.conversations.generator.IqGenerator;
71import eu.siacs.conversations.persistance.FileBackend;
72import eu.siacs.conversations.services.MemorizingTrustManager;
73import eu.siacs.conversations.services.MessageArchiveService;
74import eu.siacs.conversations.services.NotificationService;
75import eu.siacs.conversations.services.XmppConnectionService;
76import eu.siacs.conversations.utils.CryptoHelper;
77import eu.siacs.conversations.utils.Patterns;
78import eu.siacs.conversations.utils.Resolver;
79import eu.siacs.conversations.utils.SSLSocketHelper;
80import eu.siacs.conversations.utils.SocksSocketFactory;
81import eu.siacs.conversations.utils.XmlHelper;
82import eu.siacs.conversations.xml.Element;
83import eu.siacs.conversations.xml.Namespace;
84import eu.siacs.conversations.xml.Tag;
85import eu.siacs.conversations.xml.TagWriter;
86import eu.siacs.conversations.xml.XmlReader;
87import eu.siacs.conversations.xmpp.forms.Data;
88import eu.siacs.conversations.xmpp.forms.Field;
89import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
90import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
91import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
92import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
93import eu.siacs.conversations.xmpp.stanzas.IqPacket;
94import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
95import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
96import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
97import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
98import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
99import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
100import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
101import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
102import rocks.xmpp.addr.Jid;
103
104public class XmppConnection implements Runnable {
105
106 private static final int PACKET_IQ = 0;
107 private static final int PACKET_MESSAGE = 1;
108 private static final int PACKET_PRESENCE = 2;
109 public final OnIqPacketReceived registrationResponseListener = new OnIqPacketReceived() {
110 @Override
111 public void onIqPacketReceived(Account account, IqPacket packet) {
112 if (packet.getType() == IqPacket.TYPE.RESULT) {
113 account.setOption(Account.OPTION_REGISTER, false);
114 throw new StateChangingError(Account.State.REGISTRATION_SUCCESSFUL);
115 } else {
116 final List<String> PASSWORD_TOO_WEAK_MSGS = Arrays.asList(
117 "The password is too weak",
118 "Please use a longer password.");
119 Element error = packet.findChild("error");
120 Account.State state = Account.State.REGISTRATION_FAILED;
121 if (error != null) {
122 if (error.hasChild("conflict")) {
123 state = Account.State.REGISTRATION_CONFLICT;
124 } else if (error.hasChild("resource-constraint")
125 && "wait".equals(error.getAttribute("type"))) {
126 state = Account.State.REGISTRATION_PLEASE_WAIT;
127 } else if (error.hasChild("not-acceptable")
128 && PASSWORD_TOO_WEAK_MSGS.contains(error.findChildContent("text"))) {
129 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
130 }
131 }
132 throw new StateChangingError(state);
133 }
134 }
135 };
136 protected final Account account;
137 private final Features features = new Features(this);
138 private final HashMap<Jid, ServiceDiscoveryResult> disco = new HashMap<>();
139 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
140 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
141 private final Set<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new HashSet<>();
142 private final XmppConnectionService mXmppConnectionService;
143 private Socket socket;
144 private XmlReader tagReader;
145 private TagWriter tagWriter = new TagWriter();
146 private boolean shouldAuthenticate = true;
147 private boolean inSmacksSession = false;
148 private boolean isBound = false;
149 private Element streamFeatures;
150 private String streamId = null;
151 private int smVersion = 3;
152 private int stanzasReceived = 0;
153 private int stanzasSent = 0;
154 private long lastPacketReceived = 0;
155 private long lastPingSent = 0;
156 private long lastConnect = 0;
157 private long lastSessionStarted = 0;
158 private long lastDiscoStarted = 0;
159 private boolean isMamPreferenceAlways = false;
160 private AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
161 private AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
162 private AtomicBoolean mWaitingForSmCatchup = new AtomicBoolean(false);
163 private AtomicInteger mSmCatchupMessageCounter = new AtomicInteger(0);
164 private boolean mInteractive = false;
165 private int attempt = 0;
166 private OnPresencePacketReceived presenceListener = null;
167 private OnJinglePacketReceived jingleListener = null;
168 private OnIqPacketReceived unregisteredIqListener = null;
169 private OnMessagePacketReceived messageListener = null;
170 private OnStatusChanged statusListener = null;
171 private OnBindListener bindListener = null;
172 private OnMessageAcknowledged acknowledgedListener = null;
173 private SaslMechanism saslMechanism;
174 private URL redirectionUrl = null;
175 private String verifiedHostname = null;
176 private volatile Thread mThread;
177 private CountDownLatch mStreamCountDownLatch;
178
179
180 public XmppConnection(final Account account, final XmppConnectionService service) {
181 this.account = account;
182 this.mXmppConnectionService = service;
183 }
184
185 private static void fixResource(Context context, Account account) {
186 String resource = account.getResource();
187 int fixedPartLength = context.getString(R.string.app_name).length() + 1; //include the trailing dot
188 int randomPartLength = 4; // 3 bytes
189 if (resource != null && resource.length() > fixedPartLength + randomPartLength) {
190 if (validBase64(resource.substring(fixedPartLength, fixedPartLength + randomPartLength))) {
191 account.setResource(resource.substring(0, fixedPartLength + randomPartLength));
192 }
193 }
194 }
195
196 private static boolean validBase64(String input) {
197 try {
198 return Base64.decode(input, Base64.URL_SAFE).length == 3;
199 } catch (Throwable throwable) {
200 return false;
201 }
202 }
203
204 private void changeStatus(final Account.State nextStatus) {
205 synchronized (this) {
206 if (Thread.currentThread().isInterrupted()) {
207 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not changing status to " + nextStatus + " because thread was interrupted");
208 return;
209 }
210 if (account.getStatus() != nextStatus) {
211 if ((nextStatus == Account.State.OFFLINE)
212 && (account.getStatus() != Account.State.CONNECTING)
213 && (account.getStatus() != Account.State.ONLINE)
214 && (account.getStatus() != Account.State.DISABLED)) {
215 return;
216 }
217 if (nextStatus == Account.State.ONLINE) {
218 this.attempt = 0;
219 }
220 account.setStatus(nextStatus);
221 } else {
222 return;
223 }
224 }
225 if (statusListener != null) {
226 statusListener.onStatusChanged(account);
227 }
228 }
229
230 public void prepareNewConnection() {
231 this.lastConnect = SystemClock.elapsedRealtime();
232 this.lastPingSent = SystemClock.elapsedRealtime();
233 this.lastDiscoStarted = Long.MAX_VALUE;
234 this.mWaitingForSmCatchup.set(false);
235 this.changeStatus(Account.State.CONNECTING);
236 }
237
238 public boolean isWaitingForSmCatchup() {
239 return mWaitingForSmCatchup.get();
240 }
241
242 public void incrementSmCatchupMessageCounter() {
243 this.mSmCatchupMessageCounter.incrementAndGet();
244 }
245
246 protected void connect() {
247 if (mXmppConnectionService.areMessagesInitialized()) {
248 mXmppConnectionService.resetSendingToWaiting(account);
249 }
250 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
251 features.encryptionEnabled = false;
252 inSmacksSession = false;
253 isBound = false;
254 this.attempt++;
255 this.verifiedHostname = null; //will be set if user entered hostname is being used or hostname was verified with dnssec
256 try {
257 Socket localSocket;
258 shouldAuthenticate = !account.isOptionSet(Account.OPTION_REGISTER);
259 this.changeStatus(Account.State.CONNECTING);
260 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
261 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
262 if (useTor) {
263 String destination;
264 if (account.getHostname().isEmpty() || account.isOnion()) {
265 destination = account.getServer();
266 } else {
267 destination = account.getHostname();
268 this.verifiedHostname = destination;
269 }
270 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 {
281 final String domain = account.getJid().getDomain();
282 final List<Resolver.Result> results;
283 final boolean hardcoded = extended && !account.getHostname().isEmpty();
284 if (hardcoded) {
285 results = Resolver.fromHardCoded(account.getHostname(), account.getPort());
286 } else {
287 results = Resolver.resolve(domain);
288 }
289 if (Thread.currentThread().isInterrupted()) {
290 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
291 return;
292 }
293 if (results.size() == 0) {
294 Log.e(Config.LOGTAG,account.getJid().asBareJid()+": Resolver results were empty");
295 return;
296 }
297 final Resolver.Result storedBackupResult;
298 if (hardcoded) {
299 storedBackupResult = null;
300 } else {
301 storedBackupResult = mXmppConnectionService.databaseBackend.findResolverResult(domain);
302 if (storedBackupResult != null && !results.contains(storedBackupResult)) {
303 results.add(storedBackupResult);
304 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": loaded backup resolver result from db: " + storedBackupResult);
305 }
306 }
307 for (Iterator<Resolver.Result> iterator = results.iterator(); iterator.hasNext(); ) {
308 final Resolver.Result result = iterator.next();
309 if (Thread.currentThread().isInterrupted()) {
310 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Thread was interrupted");
311 return;
312 }
313 try {
314 // if tls is true, encryption is implied and must not be started
315 features.encryptionEnabled = result.isDirectTls();
316 verifiedHostname = result.isAuthenticated() ? result.getHostname().toString() : null;
317 Log.d(Config.LOGTAG,"verified hostname "+verifiedHostname);
318 final InetSocketAddress addr;
319 if (result.getIp() != null) {
320 addr = new InetSocketAddress(result.getIp(), result.getPort());
321 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
322 + ": using values from resolver " + (result.getHostname() == null ? "" : result.getHostname().toString()
323 + "/") + result.getIp().getHostAddress() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
324 } else {
325 addr = new InetSocketAddress(IDN.toASCII(result.getHostname().toString()), result.getPort());
326 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
327 + ": using values from resolver "
328 + result.getHostname().toString() + ":" + result.getPort() + " tls: " + features.encryptionEnabled);
329 }
330
331 if (!features.encryptionEnabled) {
332 localSocket = new Socket();
333 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
334 } else {
335 final TlsFactoryVerifier tlsFactoryVerifier = getTlsFactoryVerifier();
336 localSocket = tlsFactoryVerifier.factory.createSocket();
337
338 if (localSocket == null) {
339 throw new IOException("could not initialize ssl socket");
340 }
341
342 SSLSocketHelper.setSecurity((SSLSocket) localSocket);
343 SSLSocketHelper.setHostname((SSLSocket) localSocket, account.getServer());
344 SSLSocketHelper.setApplicationProtocol((SSLSocket) localSocket, "xmpp-client");
345
346 localSocket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
347
348 if (!tlsFactoryVerifier.verifier.verify(account.getServer(), verifiedHostname, ((SSLSocket) localSocket).getSession())) {
349 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate verification failed");
350 FileBackend.close(localSocket);
351 throw new StateChangingException(Account.State.TLS_ERROR);
352 }
353 }
354 localSocket.setSoTimeout(Config.SOCKET_TIMEOUT * 1000);
355 if (startXmpp(localSocket)) {
356 localSocket.setSoTimeout(0); //reset to 0; once the connection is established we don’t want this
357 if (!hardcoded && !result.equals(storedBackupResult)) {
358 mXmppConnectionService.databaseBackend.saveResolverResult(domain, result);
359 }
360 break; // successfully connected to server that speaks xmpp
361 } else {
362 FileBackend.close(localSocket);
363 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
364 }
365 } catch (final StateChangingException e) {
366 if (!iterator.hasNext()) {
367 throw e;
368 }
369 } catch (InterruptedException e) {
370 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
371 return;
372 } catch (final Throwable e) {
373 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage() + "(" + e.getClass().getName() + ")");
374 if (!iterator.hasNext()) {
375 throw new UnknownHostException();
376 }
377 }
378 }
379 }
380 processStream();
381 } catch (final SecurityException e) {
382 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
383 } catch (final StateChangingException e) {
384 this.changeStatus(e.state);
385 } catch (final UnknownHostException | ConnectException e) {
386 this.changeStatus(Account.State.SERVER_NOT_FOUND);
387 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
388 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
389 } catch (final IOException | XmlPullParserException e) {
390 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
391 this.changeStatus(Account.State.OFFLINE);
392 this.attempt = Math.max(0, this.attempt - 1);
393 } finally {
394 if (!Thread.currentThread().isInterrupted()) {
395 forceCloseSocket();
396 } else {
397 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not force closing socket because thread was interrupted");
398 }
399 }
400 }
401
402 /**
403 * Starts xmpp protocol, call after connecting to socket
404 *
405 * @return true if server returns with valid xmpp, false otherwise
406 */
407 private boolean startXmpp(Socket socket) throws Exception {
408 if (Thread.currentThread().isInterrupted()) {
409 throw new InterruptedException();
410 }
411 this.socket = socket;
412 tagReader = new XmlReader();
413 if (tagWriter != null) {
414 tagWriter.forceClose();
415 }
416 tagWriter = new TagWriter();
417 tagWriter.setOutputStream(socket.getOutputStream());
418 tagReader.setInputStream(socket.getInputStream());
419 tagWriter.beginDocument();
420 sendStartStream();
421 final Tag tag = tagReader.readTag();
422 if (Thread.currentThread().isInterrupted()) {
423 throw new InterruptedException();
424 }
425 if (socket instanceof SSLSocket) {
426 SSLSocketHelper.log(account, (SSLSocket) socket);
427 }
428 return tag != null && tag.isStart("stream");
429 }
430
431 private TlsFactoryVerifier getTlsFactoryVerifier() throws NoSuchAlgorithmException, KeyManagementException, IOException {
432 final SSLContext sc = SSLSocketHelper.getSSLContext();
433 MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
434 KeyManager[] keyManager;
435 if (account.getPrivateKeyAlias() != null && account.getPassword().isEmpty()) {
436 keyManager = new KeyManager[]{new MyKeyManager()};
437 } else {
438 keyManager = null;
439 }
440 String domain = account.getJid().getDomain();
441 sc.init(keyManager, new X509TrustManager[]{mInteractive ? trustManager.getInteractive(domain) : trustManager.getNonInteractive(domain)}, mXmppConnectionService.getRNG());
442 final SSLSocketFactory factory = sc.getSocketFactory();
443 final DomainHostnameVerifier verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier(), mInteractive);
444 return new TlsFactoryVerifier(factory, verifier);
445 }
446
447 @Override
448 public void run() {
449 synchronized (this) {
450 this.mThread = Thread.currentThread();
451 if (this.mThread.isInterrupted()) {
452 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": aborting connect because thread was interrupted");
453 return;
454 }
455 forceCloseSocket();
456 }
457 connect();
458 }
459
460 private void processStream() throws XmlPullParserException, IOException {
461 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
462 this.mStreamCountDownLatch = streamCountDownLatch;
463 Tag nextTag = tagReader.readTag();
464 while (nextTag != null && !nextTag.isEnd("stream")) {
465 if (nextTag.isStart("error")) {
466 processStreamError(nextTag);
467 } else if (nextTag.isStart("features")) {
468 processStreamFeatures(nextTag);
469 } else if (nextTag.isStart("proceed")) {
470 switchOverToTls();
471 } else if (nextTag.isStart("success")) {
472 final String challenge = tagReader.readElement(nextTag).getContent();
473 try {
474 saslMechanism.getResponse(challenge);
475 } catch (final SaslMechanism.AuthenticationException e) {
476 Log.e(Config.LOGTAG, String.valueOf(e));
477 throw new StateChangingException(Account.State.UNAUTHORIZED);
478 }
479 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": logged in");
480 account.setKey(Account.PINNED_MECHANISM_KEY,
481 String.valueOf(saslMechanism.getPriority()));
482 tagReader.reset();
483 sendStartStream();
484 final Tag tag = tagReader.readTag();
485 if (tag != null && tag.isStart("stream")) {
486 processStream();
487 } else {
488 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
489 }
490 break;
491 } else if (nextTag.isStart("failure")) {
492 final Element failure = tagReader.readElement(nextTag);
493 if (Namespace.SASL.equals(failure.getNamespace())) {
494 final String text = failure.findChildContent("text");
495 if (failure.hasChild("account-disabled") && text != null) {
496 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
497 if (matcher.find()) {
498 try {
499 URL url = new URL(text.substring(matcher.start(), matcher.end()));
500 if (url.getProtocol().equals("https")) {
501 this.redirectionUrl = url;
502 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
503 }
504 } catch (MalformedURLException e) {
505 throw new StateChangingException(Account.State.UNAUTHORIZED);
506 }
507 }
508 }
509 throw new StateChangingException(Account.State.UNAUTHORIZED);
510 } else if (Namespace.TLS.equals(failure.getNamespace())) {
511 throw new StateChangingException(Account.State.TLS_ERROR);
512 } else {
513 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
514 }
515 } else if (nextTag.isStart("challenge")) {
516 final String challenge = tagReader.readElement(nextTag).getContent();
517 final Element response = new Element("response", Namespace.SASL);
518 try {
519 response.setContent(saslMechanism.getResponse(challenge));
520 } catch (final SaslMechanism.AuthenticationException e) {
521 // TODO: Send auth abort tag.
522 Log.e(Config.LOGTAG, e.toString());
523 }
524 tagWriter.writeElement(response);
525 } else if (nextTag.isStart("enabled")) {
526 final Element enabled = tagReader.readElement(nextTag);
527 if ("true".equals(enabled.getAttribute("resume"))) {
528 this.streamId = enabled.getAttribute("id");
529 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
530 + ": stream management(" + smVersion
531 + ") enabled (resumable)");
532 } else {
533 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
534 + ": stream management(" + smVersion + ") enabled");
535 }
536 this.stanzasReceived = 0;
537 this.inSmacksSession = true;
538 final RequestPacket r = new RequestPacket(smVersion);
539 tagWriter.writeStanzaAsync(r);
540 } else if (nextTag.isStart("resumed")) {
541 this.inSmacksSession = true;
542 this.isBound = true;
543 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
544 lastPacketReceived = SystemClock.elapsedRealtime();
545 final Element resumed = tagReader.readElement(nextTag);
546 final String h = resumed.getAttribute("h");
547 try {
548 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
549 final boolean acknowledgedMessages;
550 synchronized (this.mStanzaQueue) {
551 final int serverCount = Integer.parseInt(h);
552 if (serverCount < stanzasSent) {
553 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
554 + ": session resumed with lost packages");
555 stanzasSent = serverCount;
556 } else {
557 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": session resumed");
558 }
559 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
560 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
561 failedStanzas.add(mStanzaQueue.valueAt(i));
562 }
563 mStanzaQueue.clear();
564 }
565 if (acknowledgedMessages) {
566 mXmppConnectionService.updateConversationUi();
567 }
568 Log.d(Config.LOGTAG, "resending " + failedStanzas.size() + " stanzas");
569 for (AbstractAcknowledgeableStanza packet : failedStanzas) {
570 if (packet instanceof MessagePacket) {
571 MessagePacket message = (MessagePacket) packet;
572 mXmppConnectionService.markMessage(account,
573 message.getTo().asBareJid(),
574 message.getId(),
575 Message.STATUS_UNSEND);
576 }
577 sendPacket(packet);
578 }
579 } catch (final NumberFormatException ignored) {
580 }
581 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
582 changeStatus(Account.State.ONLINE);
583 } else if (nextTag.isStart("r")) {
584 tagReader.readElement(nextTag);
585 if (Config.EXTENDED_SM_LOGGING) {
586 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
587 }
588 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
589 tagWriter.writeStanzaAsync(ack);
590 } else if (nextTag.isStart("a")) {
591 boolean accountUiNeedsRefresh = false;
592 synchronized (NotificationService.CATCHUP_LOCK) {
593 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
594 final int messageCount = mSmCatchupMessageCounter.get();
595 final int pendingIQs = packetCallbacks.size();
596 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": SM catchup complete (messages=" + messageCount + ", pending IQs="+pendingIQs+")");
597 accountUiNeedsRefresh = true;
598 if (messageCount > 0) {
599 mXmppConnectionService.getNotificationService().finishBacklog(true, account);
600 }
601 }
602 }
603 if (accountUiNeedsRefresh) {
604 mXmppConnectionService.updateAccountUi();
605 }
606 final Element ack = tagReader.readElement(nextTag);
607 lastPacketReceived = SystemClock.elapsedRealtime();
608 try {
609 final boolean acknowledgedMessages;
610 synchronized (this.mStanzaQueue) {
611 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
612 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence);
613 }
614 if (acknowledgedMessages) {
615 mXmppConnectionService.updateConversationUi();
616 }
617 } catch (NumberFormatException | NullPointerException e) {
618 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server send ack without sequence number");
619 }
620 } else if (nextTag.isStart("failed")) {
621 Element failed = tagReader.readElement(nextTag);
622 try {
623 final int serverCount = Integer.parseInt(failed.getAttribute("h"));
624 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed but server acknowledged stanza #" + serverCount);
625 final boolean acknowledgedMessages;
626 synchronized (this.mStanzaQueue) {
627 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
628 }
629 if (acknowledgedMessages) {
630 mXmppConnectionService.updateConversationUi();
631 }
632 } catch (NumberFormatException | NullPointerException e) {
633 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
634 }
635 resetStreamId();
636 sendBindRequest();
637 } else if (nextTag.isStart("iq")) {
638 processIq(nextTag);
639 } else if (nextTag.isStart("message")) {
640 processMessage(nextTag);
641 } else if (nextTag.isStart("presence")) {
642 processPresence(nextTag);
643 }
644 nextTag = tagReader.readTag();
645 }
646 if (nextTag != null && nextTag.isEnd("stream")) {
647 streamCountDownLatch.countDown();
648 }
649 }
650
651 private boolean acknowledgeStanzaUpTo(int serverCount) {
652 if (serverCount > stanzasSent) {
653 Log.e(Config.LOGTAG, "server acknowledged more stanzas than we sent. serverCount=" + serverCount + ", ourCount=" + stanzasSent);
654 }
655 boolean acknowledgedMessages = false;
656 for (int i = 0; i < mStanzaQueue.size(); ++i) {
657 if (serverCount >= mStanzaQueue.keyAt(i)) {
658 if (Config.EXTENDED_SM_LOGGING) {
659 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
660 }
661 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
662 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
663 MessagePacket packet = (MessagePacket) stanza;
664 acknowledgedMessages |= acknowledgedListener.onMessageAcknowledged(account, packet.getId());
665 }
666 mStanzaQueue.removeAt(i);
667 i--;
668 }
669 }
670 return acknowledgedMessages;
671 }
672
673 private @NonNull
674 Element processPacket(final Tag currentTag, final int packetType) throws XmlPullParserException, IOException {
675 Element element;
676 switch (packetType) {
677 case PACKET_IQ:
678 element = new IqPacket();
679 break;
680 case PACKET_MESSAGE:
681 element = new MessagePacket();
682 break;
683 case PACKET_PRESENCE:
684 element = new PresencePacket();
685 break;
686 default:
687 throw new AssertionError("Should never encounter invalid type");
688 }
689 element.setAttributes(currentTag.getAttributes());
690 Tag nextTag = tagReader.readTag();
691 if (nextTag == null) {
692 throw new IOException("interrupted mid tag");
693 }
694 while (!nextTag.isEnd(element.getName())) {
695 if (!nextTag.isNo()) {
696 final Element child = tagReader.readElement(nextTag);
697 final String type = currentTag.getAttribute("type");
698 if (packetType == PACKET_IQ
699 && "jingle".equals(child.getName())
700 && ("set".equalsIgnoreCase(type) || "get"
701 .equalsIgnoreCase(type))) {
702 element = new JinglePacket();
703 element.setAttributes(currentTag.getAttributes());
704 }
705 element.addChild(child);
706 }
707 nextTag = tagReader.readTag();
708 if (nextTag == null) {
709 throw new IOException("interrupted mid tag");
710 }
711 }
712 if (stanzasReceived == Integer.MAX_VALUE) {
713 resetStreamId();
714 throw new IOException("time to restart the session. cant handle >2 billion pcks");
715 }
716 if (inSmacksSession) {
717 ++stanzasReceived;
718 } else if (features.sm()) {
719 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not counting stanza(" + element.getClass().getSimpleName() + "). Not in smacks session.");
720 }
721 lastPacketReceived = SystemClock.elapsedRealtime();
722 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
723 Log.d(Config.LOGTAG, "[background stanza] " + element);
724 }
725 return element;
726 }
727
728 private void processIq(final Tag currentTag) throws XmlPullParserException, IOException {
729 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
730 if (!packet.valid()) {
731 Log.e(Config.LOGTAG, "encountered invalid iq from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
732 return;
733 }
734 if (packet instanceof JinglePacket) {
735 if (this.jingleListener != null) {
736 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
737 }
738 } else {
739 OnIqPacketReceived callback = null;
740 synchronized (this.packetCallbacks) {
741 if (packetCallbacks.containsKey(packet.getId())) {
742 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
743 // Packets to the server should have responses from the server
744 if (packetCallbackDuple.first.toServer(account)) {
745 if (packet.fromServer(account)) {
746 callback = packetCallbackDuple.second;
747 packetCallbacks.remove(packet.getId());
748 } else {
749 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
750 }
751 } else {
752 if (packet.getFrom() != null && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
753 callback = packetCallbackDuple.second;
754 packetCallbacks.remove(packet.getId());
755 } else {
756 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
757 }
758 }
759 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
760 callback = this.unregisteredIqListener;
761 }
762 }
763 if (callback != null) {
764 try {
765 callback.onIqPacketReceived(account, packet);
766 } catch (StateChangingError error) {
767 throw new StateChangingException(error.state);
768 }
769 }
770 }
771 }
772
773 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
774 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
775 if (!packet.valid()) {
776 Log.e(Config.LOGTAG, "encountered invalid message from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
777 return;
778 }
779 this.messageListener.onMessagePacketReceived(account, packet);
780 }
781
782 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
783 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
784 if (!packet.valid()) {
785 Log.e(Config.LOGTAG, "encountered invalid presence from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
786 return;
787 }
788 this.presenceListener.onPresencePacketReceived(account, packet);
789 }
790
791 private void sendStartTLS() throws IOException {
792 final Tag startTLS = Tag.empty("starttls");
793 startTLS.setAttribute("xmlns", Namespace.TLS);
794 tagWriter.writeTag(startTLS);
795 }
796
797 private void switchOverToTls() throws XmlPullParserException, IOException {
798 tagReader.readTag();
799 try {
800 final TlsFactoryVerifier tlsFactoryVerifier = getTlsFactoryVerifier();
801 final InetAddress address = socket == null ? null : socket.getInetAddress();
802
803 if (address == null) {
804 throw new IOException("could not setup ssl");
805 }
806
807 final SSLSocket sslSocket = (SSLSocket) tlsFactoryVerifier.factory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
808
809
810 if (sslSocket == null) {
811 throw new IOException("could not initialize ssl socket");
812 }
813
814 SSLSocketHelper.setSecurity(sslSocket);
815 SSLSocketHelper.setHostname(sslSocket, account.getServer());
816 SSLSocketHelper.setApplicationProtocol(sslSocket, "xmpp-client");
817
818 if (!tlsFactoryVerifier.verifier.verify(account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
819 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate verification failed");
820 throw new StateChangingException(Account.State.TLS_ERROR);
821 }
822 tagReader.setInputStream(sslSocket.getInputStream());
823 tagWriter.setOutputStream(sslSocket.getOutputStream());
824 sendStartStream();
825 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
826 features.encryptionEnabled = true;
827 final Tag tag = tagReader.readTag();
828 if (tag != null && tag.isStart("stream")) {
829 SSLSocketHelper.log(account, sslSocket);
830 processStream();
831 } else {
832 throw new StateChangingException(Account.State.STREAM_OPENING_ERROR);
833 }
834 sslSocket.close();
835 } catch (final NoSuchAlgorithmException | KeyManagementException e1) {
836 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate verification failed");
837 throw new StateChangingException(Account.State.TLS_ERROR);
838 }
839 }
840
841 private void processStreamFeatures(final Tag currentTag) throws XmlPullParserException, IOException {
842 this.streamFeatures = tagReader.readElement(currentTag);
843 final boolean isSecure = features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
844 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
845 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
846 sendStartTLS();
847 } else if (this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
848 if (isSecure) {
849 sendRegistryRequest();
850 } else {
851 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to find STARTTLS for registration process "+ XmlHelper.printElementNames(this.streamFeatures));
852 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
853 }
854 } else if (!this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
855 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
856 } else if (this.streamFeatures.hasChild("mechanisms") && shouldAuthenticate && isSecure) {
857 authenticate();
858 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
859 if (Config.EXTENDED_SM_LOGGING) {
860 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resuming after stanza #" + stanzasReceived);
861 }
862 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
863 this.mSmCatchupMessageCounter.set(0);
864 this.mWaitingForSmCatchup.set(true);
865 this.tagWriter.writeStanzaAsync(resume);
866 } else if (needsBinding) {
867 if (this.streamFeatures.hasChild("bind") && isSecure) {
868 sendBindRequest();
869 } else {
870 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to find bind feature "+ XmlHelper.printElementNames(this.streamFeatures));
871 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
872 }
873 }
874 }
875
876 private void authenticate() throws IOException {
877 final List<String> mechanisms = extractMechanisms(streamFeatures
878 .findChild("mechanisms"));
879 final Element auth = new Element("auth", Namespace.SASL);
880 if (mechanisms.contains("EXTERNAL") && account.getPrivateKeyAlias() != null) {
881 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
882 } else if (mechanisms.contains("SCRAM-SHA-256")) {
883 saslMechanism = new ScramSha256(tagWriter, account, mXmppConnectionService.getRNG());
884 } else if (mechanisms.contains("SCRAM-SHA-1")) {
885 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
886 } else if (mechanisms.contains("PLAIN") && !account.getJid().getDomain().equals("nimbuzz.com")) {
887 saslMechanism = new Plain(tagWriter, account);
888 } else if (mechanisms.contains("DIGEST-MD5")) {
889 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
890 } else if (mechanisms.contains("ANONYMOUS")) {
891 saslMechanism = new Anonymous(tagWriter, account, mXmppConnectionService.getRNG());
892 }
893 if (saslMechanism != null) {
894 final int pinnedMechanism = account.getKeyAsInt(Account.PINNED_MECHANISM_KEY, -1);
895 if (pinnedMechanism > saslMechanism.getPriority()) {
896 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
897 " has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
898 ") than pinned priority (" + pinnedMechanism +
899 "). Possible downgrade attack?");
900 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
901 }
902 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
903 auth.setAttribute("mechanism", saslMechanism.getMechanism());
904 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
905 auth.setContent(saslMechanism.getClientFirstMessage());
906 }
907 tagWriter.writeElement(auth);
908 } else {
909 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to find SASL mechanism "+ saslMechanism.toString());
910 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
911 }
912 }
913
914 private List<String> extractMechanisms(final Element stream) {
915 final ArrayList<String> mechanisms = new ArrayList<>(stream
916 .getChildren().size());
917 for (final Element child : stream.getChildren()) {
918 mechanisms.add(child.getContent());
919 }
920 return mechanisms;
921 }
922
923 private void sendRegistryRequest() {
924 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
925 register.query(Namespace.REGISTER);
926 register.setTo(Jid.of(account.getServer()));
927 sendUnmodifiedIqPacket(register, (account, packet) -> {
928 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
929 return;
930 }
931 if (packet.getType() == IqPacket.TYPE.ERROR) {
932 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
933 }
934 final Element query = packet.query(Namespace.REGISTER);
935 if (query.hasChild("username") && (query.hasChild("password"))) {
936 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
937 final Element username = new Element("username").setContent(account.getUsername());
938 final Element password = new Element("password").setContent(account.getPassword());
939 register1.query(Namespace.REGISTER).addChild(username);
940 register1.query().addChild(password);
941 register1.setFrom(account.getJid().asBareJid());
942 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
943 } else if (query.hasChild("x", Namespace.DATA)) {
944 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
945 final Element blob = query.findChild("data", "urn:xmpp:bob");
946 final String id = packet.getId();
947 InputStream is;
948 if (blob != null) {
949 try {
950 final String base64Blob = blob.getContent();
951 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
952 is = new ByteArrayInputStream(strBlob);
953 } catch (Exception e) {
954 is = null;
955 }
956 } else {
957 try {
958 Field field = data.getFieldByName("url");
959 URL url = field != null && field.getValue() != null ? new URL(field.getValue()) : null;
960 is = url != null ? url.openStream() : null;
961 } catch (IOException e) {
962 is = null;
963 }
964 }
965
966 if (is != null) {
967 Bitmap captcha = BitmapFactory.decodeStream(is);
968 try {
969 if (mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha)) {
970 return;
971 }
972 } catch (Exception e) {
973 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
974 }
975 }
976 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
977 } else if (query.hasChild("instructions") || query.hasChild("x", Namespace.OOB)) {
978 final String instructions = query.findChildContent("instructions");
979 final Element oob = query.findChild("x", Namespace.OOB);
980 final String url = oob == null ? null : oob.findChildContent("url");
981 if (url != null) {
982 setAccountCreationFailed(url);
983 } else if (instructions != null) {
984 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
985 if (matcher.find()) {
986 setAccountCreationFailed(instructions.substring(matcher.start(), matcher.end()));
987 }
988 }
989 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
990 }
991 }, true);
992 }
993
994 private void setAccountCreationFailed(String url) {
995 if (url != null) {
996 try {
997 this.redirectionUrl = new URL(url);
998 if (this.redirectionUrl.getProtocol().equals("https")) {
999 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1000 }
1001 } catch (MalformedURLException e) {
1002 //fall through
1003 }
1004 }
1005 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1006 }
1007
1008 public URL getRedirectionUrl() {
1009 return this.redirectionUrl;
1010 }
1011
1012 public void resetEverything() {
1013 resetAttemptCount(true);
1014 resetStreamId();
1015 clearIqCallbacks();
1016 this.stanzasSent = 0;
1017 mStanzaQueue.clear();
1018 this.redirectionUrl = null;
1019 synchronized (this.disco) {
1020 disco.clear();
1021 }
1022 }
1023
1024 private void sendBindRequest() {
1025 try {
1026 mXmppConnectionService.restoredFromDatabaseLatch.await();
1027 } catch (InterruptedException e) {
1028 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while waiting for DB restore during bind");
1029 return;
1030 }
1031 clearIqCallbacks();
1032 if (account.getJid().isBareJid()) {
1033 account.setResource(this.createNewResource());
1034 } else {
1035 fixResource(mXmppConnectionService, account);
1036 }
1037 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1038 final String resource = Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1039 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1040 this.sendUnmodifiedIqPacket(iq, (account, packet) -> {
1041 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1042 return;
1043 }
1044 final Element bind = packet.findChild("bind");
1045 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1046 isBound = true;
1047 final Element jid = bind.findChild("jid");
1048 if (jid != null && jid.getContent() != null) {
1049 try {
1050 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1051 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1052 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server tried to re-assign domain to " + assignedJid.getDomain());
1053 throw new StateChangingError(Account.State.BIND_FAILURE);
1054 }
1055 if (account.setJid(assignedJid)) {
1056 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": jid changed during bind. updating database");
1057 mXmppConnectionService.databaseBackend.updateAccount(account);
1058 }
1059 if (streamFeatures.hasChild("session")
1060 && !streamFeatures.findChild("session").hasChild("optional")) {
1061 sendStartSession();
1062 } else {
1063 sendPostBindInitialization();
1064 }
1065 return;
1066 } catch (final IllegalArgumentException e) {
1067 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server reported invalid jid (" + jid.getContent() + ") on bind");
1068 }
1069 } else {
1070 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure. (no jid)");
1071 }
1072 } else {
1073 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet.toString());
1074 }
1075 final Element error = packet.findChild("error");
1076 if (packet.getType() == IqPacket.TYPE.ERROR && error != null && error.hasChild("conflict")) {
1077 account.setResource(createNewResource());
1078 }
1079 throw new StateChangingError(Account.State.BIND_FAILURE);
1080 }, true);
1081 }
1082
1083 private void clearIqCallbacks() {
1084 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1085 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1086 synchronized (this.packetCallbacks) {
1087 if (this.packetCallbacks.size() == 0) {
1088 return;
1089 }
1090 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": clearing " + this.packetCallbacks.size() + " iq callbacks");
1091 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
1092 while (iterator.hasNext()) {
1093 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1094 callbacks.add(entry.second);
1095 iterator.remove();
1096 }
1097 }
1098 for (OnIqPacketReceived callback : callbacks) {
1099 try {
1100 callback.onIqPacketReceived(account, failurePacket);
1101 } catch (StateChangingError error) {
1102 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": caught StateChangingError(" + error.state.toString() + ") while clearing callbacks");
1103 //ignore
1104 }
1105 }
1106 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
1107 }
1108
1109 public void sendDiscoTimeout() {
1110 if (mWaitForDisco.compareAndSet(true, false)) {
1111 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1112 finalizeBind();
1113 }
1114 }
1115
1116 private void sendStartSession() {
1117 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": sending legacy session to outdated server");
1118 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1119 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1120 this.sendUnmodifiedIqPacket(startSession, (account, packet) -> {
1121 if (packet.getType() == IqPacket.TYPE.RESULT) {
1122 sendPostBindInitialization();
1123 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1124 throw new StateChangingError(Account.State.SESSION_FAILURE);
1125 }
1126 }, true);
1127 }
1128
1129 private void sendPostBindInitialization() {
1130 smVersion = 0;
1131 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
1132 smVersion = 3;
1133 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
1134 smVersion = 2;
1135 }
1136 if (smVersion != 0) {
1137 synchronized (this.mStanzaQueue) {
1138 final EnablePacket enable = new EnablePacket(smVersion);
1139 tagWriter.writeStanzaAsync(enable);
1140 stanzasSent = 0;
1141 mStanzaQueue.clear();
1142 }
1143 }
1144 features.carbonsEnabled = false;
1145 features.blockListRequested = false;
1146 synchronized (this.disco) {
1147 this.disco.clear();
1148 }
1149 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1150 mPendingServiceDiscoveries.set(0);
1151 if (smVersion == 0 || Patches.DISCO_EXCEPTIONS.contains(account.getJid().getDomain())) {
1152 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": do not wait for service discovery");
1153 mWaitForDisco.set(false);
1154 } else {
1155 mWaitForDisco.set(true);
1156 }
1157 lastDiscoStarted = SystemClock.elapsedRealtime();
1158 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1159 Element caps = streamFeatures.findChild("c");
1160 final String hash = caps == null ? null : caps.getAttribute("hash");
1161 final String ver = caps == null ? null : caps.getAttribute("ver");
1162 ServiceDiscoveryResult discoveryResult = null;
1163 if (hash != null && ver != null) {
1164 discoveryResult = mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1165 }
1166 final boolean requestDiscoItemsFirst = !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1167 if (requestDiscoItemsFirst) {
1168 sendServiceDiscoveryItems(Jid.of(account.getServer()));
1169 }
1170 if (discoveryResult == null) {
1171 sendServiceDiscoveryInfo(Jid.of(account.getServer()));
1172 } else {
1173 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1174 disco.put(Jid.of(account.getServer()), discoveryResult);
1175 }
1176 discoverMamPreferences();
1177 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1178 if (!requestDiscoItemsFirst) {
1179 sendServiceDiscoveryItems(Jid.of(account.getServer()));
1180 }
1181
1182 if (!mWaitForDisco.get()) {
1183 finalizeBind();
1184 }
1185 this.lastSessionStarted = SystemClock.elapsedRealtime();
1186 }
1187
1188 private void sendServiceDiscoveryInfo(final Jid jid) {
1189 mPendingServiceDiscoveries.incrementAndGet();
1190 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1191 iq.setTo(jid);
1192 iq.query("http://jabber.org/protocol/disco#info");
1193 this.sendIqPacket(iq, (account, packet) -> {
1194 if (packet.getType() == IqPacket.TYPE.RESULT) {
1195 boolean advancedStreamFeaturesLoaded;
1196 synchronized (XmppConnection.this.disco) {
1197 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1198 if (jid.equals(Jid.of(account.getServer()))) {
1199 mXmppConnectionService.databaseBackend.insertDiscoveryResult(result);
1200 }
1201 disco.put(jid, result);
1202 advancedStreamFeaturesLoaded = disco.containsKey(Jid.of(account.getServer()))
1203 && disco.containsKey(account.getJid().asBareJid());
1204 }
1205 if (advancedStreamFeaturesLoaded && (jid.equals(Jid.of(account.getServer())) || jid.equals(account.getJid().asBareJid()))) {
1206 enableAdvancedStreamFeatures();
1207 }
1208 } else if (packet.getType() == IqPacket.TYPE.ERROR) {
1209 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco info for " + jid.toString());
1210 final boolean serverOrAccount = jid.equals(Jid.of(account.getServer())) || jid.equals(account.getJid().asBareJid());
1211 final boolean advancedStreamFeaturesLoaded;
1212 if (serverOrAccount) {
1213 synchronized (XmppConnection.this.disco) {
1214 disco.put(jid, ServiceDiscoveryResult.empty());
1215 advancedStreamFeaturesLoaded = disco.containsKey(Jid.of(account.getServer())) && disco.containsKey(account.getJid().asBareJid());
1216 }
1217 } else {
1218 advancedStreamFeaturesLoaded = false;
1219 }
1220 if (advancedStreamFeaturesLoaded) {
1221 enableAdvancedStreamFeatures();
1222 }
1223 }
1224 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1225 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1226 && mWaitForDisco.compareAndSet(true, false)) {
1227 finalizeBind();
1228 }
1229 }
1230 });
1231 }
1232
1233 private void discoverMamPreferences() {
1234 IqPacket request = new IqPacket(IqPacket.TYPE.GET);
1235 request.addChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1236 sendIqPacket(request, (account, response) -> {
1237 if (response.getType() == IqPacket.TYPE.RESULT) {
1238 Element prefs = response.findChild("prefs", MessageArchiveService.Version.MAM_2.namespace);
1239 isMamPreferenceAlways = "always".equals(prefs == null ? null : prefs.getAttribute("default"));
1240 }
1241 });
1242 }
1243
1244 public boolean isMamPreferenceAlways() {
1245 return isMamPreferenceAlways;
1246 }
1247
1248 private void finalizeBind() {
1249 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
1250 if (bindListener != null) {
1251 bindListener.onBind(account);
1252 }
1253 changeStatus(Account.State.ONLINE);
1254 }
1255
1256 private void enableAdvancedStreamFeatures() {
1257 if (getFeatures().carbons() && !features.carbonsEnabled) {
1258 sendEnableCarbons();
1259 }
1260 if (getFeatures().blocking() && !features.blockListRequested) {
1261 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
1262 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1263 }
1264 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1265 listener.onAdvancedStreamFeaturesAvailable(account);
1266 }
1267 }
1268
1269 private void sendServiceDiscoveryItems(final Jid server) {
1270 mPendingServiceDiscoveries.incrementAndGet();
1271 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1272 iq.setTo(Jid.ofDomain(server.getDomain()));
1273 iq.query("http://jabber.org/protocol/disco#items");
1274 this.sendIqPacket(iq, (account, packet) -> {
1275 if (packet.getType() == IqPacket.TYPE.RESULT) {
1276 HashSet<Jid> items = new HashSet<Jid>();
1277 final List<Element> elements = packet.query().getChildren();
1278 for (final Element element : elements) {
1279 if (element.getName().equals("item")) {
1280 final Jid jid = InvalidJid.getNullForInvalid(element.getAttributeAsJid("jid"));
1281 if (jid != null && !jid.equals(Jid.of(account.getServer()))) {
1282 items.add(jid);
1283 }
1284 }
1285 }
1286 for (Jid jid : items) {
1287 sendServiceDiscoveryInfo(jid);
1288 }
1289 } else {
1290 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco items of " + server);
1291 }
1292 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1293 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1294 && mWaitForDisco.compareAndSet(true, false)) {
1295 finalizeBind();
1296 }
1297 }
1298 });
1299 }
1300
1301 private void sendEnableCarbons() {
1302 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1303 iq.addChild("enable", "urn:xmpp:carbons:2");
1304 this.sendIqPacket(iq, new OnIqPacketReceived() {
1305
1306 @Override
1307 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1308 if (!packet.hasChild("error")) {
1309 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1310 + ": successfully enabled carbons");
1311 features.carbonsEnabled = true;
1312 } else {
1313 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1314 + ": error enableing carbons " + packet.toString());
1315 }
1316 }
1317 });
1318 }
1319
1320 private void processStreamError(final Tag currentTag) throws XmlPullParserException, IOException {
1321 final Element streamError = tagReader.readElement(currentTag);
1322 if (streamError == null) {
1323 return;
1324 }
1325 if (streamError.hasChild("conflict")) {
1326 account.setResource(createNewResource());
1327 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": switching resource due to conflict (" + account.getResource() + ")");
1328 throw new IOException();
1329 } else if (streamError.hasChild("host-unknown")) {
1330 throw new StateChangingException(Account.State.HOST_UNKNOWN);
1331 } else if (streamError.hasChild("policy-violation")) {
1332 final String text = streamError.findChildContent("text");
1333 Log.d(Config.LOGTAG,account.getJid().asBareJid()+": policy violation. "+text);
1334 throw new StateChangingException(Account.State.POLICY_VIOLATION);
1335 } else {
1336 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError.toString());
1337 throw new StateChangingException(Account.State.STREAM_ERROR);
1338 }
1339 }
1340
1341 private void sendStartStream() throws IOException {
1342 final Tag stream = Tag.start("stream:stream");
1343 stream.setAttribute("to", account.getServer());
1344 stream.setAttribute("version", "1.0");
1345 stream.setAttribute("xml:lang", "en");
1346 stream.setAttribute("xmlns", "jabber:client");
1347 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1348 tagWriter.writeTag(stream);
1349 }
1350
1351 private String createNewResource() {
1352 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
1353 }
1354
1355 private String nextRandomId() {
1356 return nextRandomId(false);
1357 }
1358
1359 private String nextRandomId(boolean s) {
1360 return CryptoHelper.random(s ? 3 : 9, mXmppConnectionService.getRNG());
1361 }
1362
1363 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1364 packet.setFrom(account.getJid());
1365 return this.sendUnmodifiedIqPacket(packet, callback, false);
1366 }
1367
1368 public synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
1369 if (packet.getId() == null) {
1370 packet.setAttribute("id", nextRandomId());
1371 }
1372 if (callback != null) {
1373 synchronized (this.packetCallbacks) {
1374 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1375 }
1376 }
1377 this.sendPacket(packet, force);
1378 return packet.getId();
1379 }
1380
1381 public void sendMessagePacket(final MessagePacket packet) {
1382 this.sendPacket(packet);
1383 }
1384
1385 public void sendPresencePacket(final PresencePacket packet) {
1386 this.sendPacket(packet);
1387 }
1388
1389 private synchronized void sendPacket(final AbstractStanza packet) {
1390 sendPacket(packet, false);
1391 }
1392
1393 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
1394 if (stanzasSent == Integer.MAX_VALUE) {
1395 resetStreamId();
1396 disconnect(true);
1397 return;
1398 }
1399 synchronized (this.mStanzaQueue) {
1400 if (force || isBound) {
1401 tagWriter.writeStanzaAsync(packet);
1402 } else {
1403 Log.d(Config.LOGTAG, account.getJid().asBareJid() + " do not write stanza to unbound stream " + packet.toString());
1404 }
1405 if (packet instanceof AbstractAcknowledgeableStanza) {
1406 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1407
1408 if (this.mStanzaQueue.size() != 0) {
1409 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
1410 if (currentHighestKey != stanzasSent) {
1411 throw new AssertionError("Stanza count messed up");
1412 }
1413 }
1414
1415 ++stanzasSent;
1416 this.mStanzaQueue.append(stanzasSent, stanza);
1417 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
1418 if (Config.EXTENDED_SM_LOGGING) {
1419 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1420 }
1421 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1422 }
1423 }
1424 }
1425 }
1426
1427 public void sendPing() {
1428 if (!r()) {
1429 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1430 iq.setFrom(account.getJid());
1431 iq.addChild("ping", Namespace.PING);
1432 this.sendIqPacket(iq, null);
1433 }
1434 this.lastPingSent = SystemClock.elapsedRealtime();
1435 }
1436
1437 public void setOnMessagePacketReceivedListener(
1438 final OnMessagePacketReceived listener) {
1439 this.messageListener = listener;
1440 }
1441
1442 public void setOnUnregisteredIqPacketReceivedListener(
1443 final OnIqPacketReceived listener) {
1444 this.unregisteredIqListener = listener;
1445 }
1446
1447 public void setOnPresencePacketReceivedListener(
1448 final OnPresencePacketReceived listener) {
1449 this.presenceListener = listener;
1450 }
1451
1452 public void setOnJinglePacketReceivedListener(
1453 final OnJinglePacketReceived listener) {
1454 this.jingleListener = listener;
1455 }
1456
1457 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1458 this.statusListener = listener;
1459 }
1460
1461 public void setOnBindListener(final OnBindListener listener) {
1462 this.bindListener = listener;
1463 }
1464
1465 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1466 this.acknowledgedListener = listener;
1467 }
1468
1469 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1470 this.advancedStreamFeaturesLoadedListeners.add(listener);
1471 }
1472
1473 private void forceCloseSocket() {
1474 FileBackend.close(this.socket);
1475 FileBackend.close(this.tagReader);
1476 }
1477
1478 public void interrupt() {
1479 if (this.mThread != null) {
1480 this.mThread.interrupt();
1481 }
1482 }
1483
1484 public void disconnect(final boolean force) {
1485 interrupt();
1486 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
1487 if (force) {
1488 forceCloseSocket();
1489 } else {
1490 final TagWriter currentTagWriter = this.tagWriter;
1491 if (currentTagWriter.isActive()) {
1492 currentTagWriter.finish();
1493 final Socket currentSocket = this.socket;
1494 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
1495 try {
1496 currentTagWriter.await(1, TimeUnit.SECONDS);
1497 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
1498 currentTagWriter.writeTag(Tag.end("stream:stream"));
1499 if (streamCountDownLatch != null) {
1500 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
1501 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote ended stream");
1502 } else {
1503 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote has not closed socket. force closing");
1504 }
1505 }
1506 } catch (InterruptedException e) {
1507 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while gracefully closing stream");
1508 } catch (final IOException e) {
1509 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": io exception during disconnect (" + e.getMessage() + ")");
1510 } finally {
1511 FileBackend.close(currentSocket);
1512 }
1513 } else {
1514 forceCloseSocket();
1515 }
1516 }
1517 }
1518
1519 private void resetStreamId() {
1520 this.streamId = null;
1521 }
1522
1523 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
1524 synchronized (this.disco) {
1525 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
1526 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
1527 if (cursor.getValue().getFeatures().contains(feature)) {
1528 items.add(cursor);
1529 }
1530 }
1531 return items;
1532 }
1533 }
1534
1535 public Jid findDiscoItemByFeature(final String feature) {
1536 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
1537 if (items.size() >= 1) {
1538 return items.get(0).getKey();
1539 }
1540 return null;
1541 }
1542
1543 public boolean r() {
1544 if (getFeatures().sm()) {
1545 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1546 return true;
1547 } else {
1548 return false;
1549 }
1550 }
1551
1552 public List<String> getMucServersWithholdAccount() {
1553 List<String> servers = getMucServers();
1554 servers.remove(account.getServer());
1555 return servers;
1556 }
1557
1558 public List<String> getMucServers() {
1559 List<String> servers = new ArrayList<>();
1560 synchronized (this.disco) {
1561 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
1562 final ServiceDiscoveryResult value = cursor.getValue();
1563 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
1564 && value.hasIdentity("conference", "text")
1565 && !value.getFeatures().contains("jabber:iq:gateway")
1566 && !value.hasIdentity("conference", "irc")) {
1567 servers.add(cursor.getKey().toString());
1568 }
1569 }
1570 }
1571 return servers;
1572 }
1573
1574 public String getMucServer() {
1575 List<String> servers = getMucServers();
1576 return servers.size() > 0 ? servers.get(0) : null;
1577 }
1578
1579 public int getTimeToNextAttempt() {
1580 final int interval = Math.min((int) (25 * Math.pow(1.3, attempt)), 300);
1581 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1582 return interval - secondsSinceLast;
1583 }
1584
1585 public int getAttempt() {
1586 return this.attempt;
1587 }
1588
1589 public Features getFeatures() {
1590 return this.features;
1591 }
1592
1593 public long getLastSessionEstablished() {
1594 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1595 return System.currentTimeMillis() - diff;
1596 }
1597
1598 public long getLastConnect() {
1599 return this.lastConnect;
1600 }
1601
1602 public long getLastPingSent() {
1603 return this.lastPingSent;
1604 }
1605
1606 public long getLastDiscoStarted() {
1607 return this.lastDiscoStarted;
1608 }
1609
1610 public long getLastPacketReceived() {
1611 return this.lastPacketReceived;
1612 }
1613
1614 public void sendActive() {
1615 this.sendPacket(new ActivePacket());
1616 }
1617
1618 public void sendInactive() {
1619 this.sendPacket(new InactivePacket());
1620 }
1621
1622 public void resetAttemptCount(boolean resetConnectTime) {
1623 this.attempt = 0;
1624 if (resetConnectTime) {
1625 this.lastConnect = 0;
1626 }
1627 }
1628
1629 public void setInteractive(boolean interactive) {
1630 this.mInteractive = interactive;
1631 }
1632
1633 public Identity getServerIdentity() {
1634 synchronized (this.disco) {
1635 ServiceDiscoveryResult result = disco.get(Jid.ofDomain(account.getJid().getDomain()));
1636 if (result == null) {
1637 return Identity.UNKNOWN;
1638 }
1639 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
1640 if (id.getType().equals("im") && id.getCategory().equals("server") && id.getName() != null) {
1641 switch (id.getName()) {
1642 case "Prosody":
1643 return Identity.PROSODY;
1644 case "ejabberd":
1645 return Identity.EJABBERD;
1646 case "Slack-XMPP":
1647 return Identity.SLACK;
1648 }
1649 }
1650 }
1651 }
1652 return Identity.UNKNOWN;
1653 }
1654
1655 private IqGenerator getIqGenerator() {
1656 return mXmppConnectionService.getIqGenerator();
1657 }
1658
1659 public enum Identity {
1660 FACEBOOK,
1661 SLACK,
1662 EJABBERD,
1663 PROSODY,
1664 NIMBUZZ,
1665 UNKNOWN
1666 }
1667
1668 private static class TlsFactoryVerifier {
1669 private final SSLSocketFactory factory;
1670 private final DomainHostnameVerifier verifier;
1671
1672 TlsFactoryVerifier(final SSLSocketFactory factory, final DomainHostnameVerifier verifier) throws IOException {
1673 this.factory = factory;
1674 this.verifier = verifier;
1675 if (factory == null || verifier == null) {
1676 throw new IOException("could not setup ssl");
1677 }
1678 }
1679 }
1680
1681 private class MyKeyManager implements X509KeyManager {
1682 @Override
1683 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
1684 return account.getPrivateKeyAlias();
1685 }
1686
1687 @Override
1688 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
1689 return null;
1690 }
1691
1692 @Override
1693 public X509Certificate[] getCertificateChain(String alias) {
1694 Log.d(Config.LOGTAG, "getting certificate chain");
1695 try {
1696 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
1697 } catch (Exception e) {
1698 Log.d(Config.LOGTAG, e.getMessage());
1699 return new X509Certificate[0];
1700 }
1701 }
1702
1703 @Override
1704 public String[] getClientAliases(String s, Principal[] principals) {
1705 final String alias = account.getPrivateKeyAlias();
1706 return alias != null ? new String[]{alias} : new String[0];
1707 }
1708
1709 @Override
1710 public String[] getServerAliases(String s, Principal[] principals) {
1711 return new String[0];
1712 }
1713
1714 @Override
1715 public PrivateKey getPrivateKey(String alias) {
1716 try {
1717 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
1718 } catch (Exception e) {
1719 return null;
1720 }
1721 }
1722 }
1723
1724 private class StateChangingError extends Error {
1725 private final Account.State state;
1726
1727 public StateChangingError(Account.State state) {
1728 this.state = state;
1729 }
1730 }
1731
1732 private class StateChangingException extends IOException {
1733 private final Account.State state;
1734
1735 public StateChangingException(Account.State state) {
1736 this.state = state;
1737 }
1738 }
1739
1740 public class Features {
1741 XmppConnection connection;
1742 private boolean carbonsEnabled = false;
1743 private boolean encryptionEnabled = false;
1744 private boolean blockListRequested = false;
1745
1746 public Features(final XmppConnection connection) {
1747 this.connection = connection;
1748 }
1749
1750 private boolean hasDiscoFeature(final Jid server, final String feature) {
1751 synchronized (XmppConnection.this.disco) {
1752 return connection.disco.containsKey(server) &&
1753 connection.disco.get(server).getFeatures().contains(feature);
1754 }
1755 }
1756
1757 public boolean carbons() {
1758 return hasDiscoFeature(Jid.of(account.getServer()), "urn:xmpp:carbons:2");
1759 }
1760
1761 public boolean bookmarksConversion() {
1762 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_CONVERSION) && pepPublishOptions();
1763 }
1764
1765 public boolean avatarConversion() {
1766 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.AVATAR_CONVERSION) && pepPublishOptions();
1767 }
1768
1769 public boolean blocking() {
1770 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.BLOCKING);
1771 }
1772
1773 public boolean spamReporting() {
1774 return hasDiscoFeature(Jid.of(account.getServer()), "urn:xmpp:reporting:reason:spam:0");
1775 }
1776
1777 public boolean flexibleOfflineMessageRetrieval() {
1778 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL);
1779 }
1780
1781 public boolean register() {
1782 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.REGISTER);
1783 }
1784
1785 public boolean sm() {
1786 return streamId != null
1787 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1788 }
1789
1790 public boolean csi() {
1791 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1792 }
1793
1794 public boolean pep() {
1795 synchronized (XmppConnection.this.disco) {
1796 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1797 return info != null && info.hasIdentity("pubsub", "pep");
1798 }
1799 }
1800
1801 public boolean pepPersistent() {
1802 synchronized (XmppConnection.this.disco) {
1803 ServiceDiscoveryResult info = disco.get(account.getJid().asBareJid());
1804 return info != null && info.getFeatures().contains("http://jabber.org/protocol/pubsub#persistent-items");
1805 }
1806 }
1807
1808 public boolean pepPublishOptions() {
1809 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUBSUB_PUBLISH_OPTIONS);
1810 }
1811
1812 public boolean pepOmemoWhitelisted() {
1813 return hasDiscoFeature(account.getJid().asBareJid(), AxolotlService.PEP_OMEMO_WHITELISTED);
1814 }
1815
1816 public boolean mam() {
1817 return MessageArchiveService.Version.has(getAccountFeatures());
1818 }
1819
1820 public List<String> getAccountFeatures() {
1821 ServiceDiscoveryResult result = connection.disco.get(account.getJid().asBareJid());
1822 return result == null ? Collections.emptyList() : result.getFeatures();
1823 }
1824
1825 public boolean push() {
1826 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
1827 || hasDiscoFeature(Jid.of(account.getServer()), Namespace.PUSH);
1828 }
1829
1830 public boolean rosterVersioning() {
1831 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1832 }
1833
1834 public void setBlockListRequested(boolean value) {
1835 this.blockListRequested = value;
1836 }
1837
1838 public boolean p1S3FileTransfer() {
1839 return hasDiscoFeature(Jid.of(account.getServer()), Namespace.P1_S3_FILE_TRANSFER);
1840 }
1841
1842 public boolean httpUpload(long filesize) {
1843 if (Config.DISABLE_HTTP_UPLOAD) {
1844 return false;
1845 } else {
1846 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1847 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1848 if (items.size() > 0) {
1849 try {
1850 long maxsize = Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1851 if (filesize <= maxsize) {
1852 return true;
1853 } else {
1854 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": http upload is not available for files with size " + filesize + " (max is " + maxsize + ")");
1855 return false;
1856 }
1857 } catch (Exception e) {
1858 return true;
1859 }
1860 }
1861 }
1862 return false;
1863 }
1864 }
1865
1866 public boolean useLegacyHttpUpload() {
1867 return findDiscoItemByFeature(Namespace.HTTP_UPLOAD) == null && findDiscoItemByFeature(Namespace.HTTP_UPLOAD_LEGACY) != null;
1868 }
1869
1870 public long getMaxHttpUploadSize() {
1871 for (String namespace : new String[]{Namespace.HTTP_UPLOAD, Namespace.HTTP_UPLOAD_LEGACY}) {
1872 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(namespace);
1873 if (items.size() > 0) {
1874 try {
1875 return Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(namespace, "max-file-size"));
1876 } catch (Exception e) {
1877 //ignored
1878 }
1879 }
1880 }
1881 return -1;
1882 }
1883
1884 public boolean stanzaIds() {
1885 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.STANZA_IDS);
1886 }
1887 }
1888}