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 protected 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 }
402 } catch (final StateChangingException e) {
403 throw e;
404 } catch (InterruptedException e) {
405 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": thread was interrupted before beginning stream");
406 return;
407 } catch (final Throwable e) {
408 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage() + "(" + e.getClass().getName() + ")");
409 if (!iterator.hasNext()) {
410 throw new UnknownHostException();
411 }
412 }
413 }
414 }
415 processStream();
416 } catch (final SecurityException e) {
417 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
418 } catch (final StateChangingException e) {
419 this.changeStatus(e.state);
420 } catch (final UnknownHostException | ConnectException e) {
421 this.changeStatus(Account.State.SERVER_NOT_FOUND);
422 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
423 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
424 } catch (final IOException | XmlPullParserException | NoSuchAlgorithmException e) {
425 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": " + e.getMessage());
426 this.changeStatus(Account.State.OFFLINE);
427 this.attempt = Math.max(0, this.attempt - 1);
428 } finally {
429 if (!Thread.currentThread().isInterrupted()) {
430 forceCloseSocket();
431 } else {
432 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not force closing socket because thread was interrupted");
433 }
434 }
435 }
436
437 /**
438 * Starts xmpp protocol, call after connecting to socket
439 *
440 * @return true if server returns with valid xmpp, false otherwise
441 */
442 private boolean startXmpp(Socket socket) throws Exception {
443 if (Thread.currentThread().isInterrupted()) {
444 throw new InterruptedException();
445 }
446 this.socket = socket;
447 tagReader = new XmlReader();
448 if (tagWriter != null) {
449 tagWriter.forceClose();
450 }
451 tagWriter = new TagWriter();
452 tagWriter.setOutputStream(socket.getOutputStream());
453 tagReader.setInputStream(socket.getInputStream());
454 tagWriter.beginDocument();
455 sendStartStream();
456 final Tag tag = tagReader.readTag();
457 if (Thread.currentThread().isInterrupted()) {
458 throw new InterruptedException();
459 }
460 if (socket instanceof SSLSocket) {
461 SSLSocketHelper.log(account, (SSLSocket) socket);
462 }
463 return tag != null && tag.isStart("stream");
464 }
465
466 private TlsFactoryVerifier getTlsFactoryVerifier() throws NoSuchAlgorithmException, KeyManagementException, IOException {
467 final SSLContext sc = SSLSocketHelper.getSSLContext();
468 MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
469 KeyManager[] keyManager;
470 if (account.getPrivateKeyAlias() != null && account.getPassword().isEmpty()) {
471 keyManager = new KeyManager[]{new MyKeyManager()};
472 } else {
473 keyManager = null;
474 }
475 String domain = account.getJid().getDomain();
476 sc.init(keyManager, new X509TrustManager[]{mInteractive ? trustManager.getInteractive(domain) : trustManager.getNonInteractive(domain)}, mXmppConnectionService.getRNG());
477 final SSLSocketFactory factory = sc.getSocketFactory();
478 final DomainHostnameVerifier verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier(), mInteractive);
479 return new TlsFactoryVerifier(factory, verifier);
480 }
481
482 @Override
483 public void run() {
484 synchronized (this) {
485 this.mThread = Thread.currentThread();
486 if (this.mThread.isInterrupted()) {
487 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": aborting connect because thread was interrupted");
488 return;
489 }
490 forceCloseSocket();
491 }
492 connect();
493 }
494
495 private void processStream() throws XmlPullParserException, IOException {
496 final CountDownLatch streamCountDownLatch = new CountDownLatch(1);
497 this.mStreamCountDownLatch = streamCountDownLatch;
498 Tag nextTag = tagReader.readTag();
499 while (nextTag != null && !nextTag.isEnd("stream")) {
500 if (nextTag.isStart("error")) {
501 processStreamError(nextTag);
502 } else if (nextTag.isStart("features")) {
503 processStreamFeatures(nextTag);
504 } else if (nextTag.isStart("proceed")) {
505 switchOverToTls(nextTag);
506 } else if (nextTag.isStart("success")) {
507 final String challenge = tagReader.readElement(nextTag).getContent();
508 try {
509 saslMechanism.getResponse(challenge);
510 } catch (final SaslMechanism.AuthenticationException e) {
511 Log.e(Config.LOGTAG, String.valueOf(e));
512 throw new StateChangingException(Account.State.UNAUTHORIZED);
513 }
514 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": logged in");
515 account.setKey(Account.PINNED_MECHANISM_KEY,
516 String.valueOf(saslMechanism.getPriority()));
517 tagReader.reset();
518 sendStartStream();
519 final Tag tag = tagReader.readTag();
520 if (tag != null && tag.isStart("stream")) {
521 processStream();
522 } else {
523 throw new IOException("server didn't restart stream after successful auth");
524 }
525 break;
526 } else if (nextTag.isStart("failure")) {
527 final Element failure = tagReader.readElement(nextTag);
528 if (Namespace.SASL.equals(failure.getNamespace())) {
529 final String text = failure.findChildContent("text");
530 if (failure.hasChild("account-disabled") && text != null) {
531 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(text);
532 if (matcher.find()) {
533 try {
534 URL url = new URL(text.substring(matcher.start(), matcher.end()));
535 if (url.getProtocol().equals("https")) {
536 this.redirectionUrl = url;
537 throw new StateChangingException(Account.State.PAYMENT_REQUIRED);
538 }
539 } catch (MalformedURLException e) {
540 throw new StateChangingException(Account.State.UNAUTHORIZED);
541 }
542 }
543 }
544 throw new StateChangingException(Account.State.UNAUTHORIZED);
545 } else if (Namespace.TLS.equals(failure.getNamespace())) {
546 throw new StateChangingException(Account.State.TLS_ERROR);
547 } else {
548 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
549 }
550 } else if (nextTag.isStart("challenge")) {
551 final String challenge = tagReader.readElement(nextTag).getContent();
552 final Element response = new Element("response", Namespace.SASL);
553 try {
554 response.setContent(saslMechanism.getResponse(challenge));
555 } catch (final SaslMechanism.AuthenticationException e) {
556 // TODO: Send auth abort tag.
557 Log.e(Config.LOGTAG, e.toString());
558 }
559 tagWriter.writeElement(response);
560 } else if (nextTag.isStart("enabled")) {
561 final Element enabled = tagReader.readElement(nextTag);
562 if ("true".equals(enabled.getAttribute("resume"))) {
563 this.streamId = enabled.getAttribute("id");
564 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
565 + ": stream management(" + smVersion
566 + ") enabled (resumable)");
567 } else {
568 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
569 + ": stream management(" + smVersion + ") enabled");
570 }
571 this.stanzasReceived = 0;
572 this.inSmacksSession = true;
573 final RequestPacket r = new RequestPacket(smVersion);
574 tagWriter.writeStanzaAsync(r);
575 } else if (nextTag.isStart("resumed")) {
576 this.inSmacksSession = true;
577 this.isBound = true;
578 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
579 lastPacketReceived = SystemClock.elapsedRealtime();
580 final Element resumed = tagReader.readElement(nextTag);
581 final String h = resumed.getAttribute("h");
582 try {
583 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
584 final boolean acknowledgedMessages;
585 synchronized (this.mStanzaQueue) {
586 final int serverCount = Integer.parseInt(h);
587 if (serverCount < stanzasSent) {
588 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString()
589 + ": session resumed with lost packages");
590 stanzasSent = serverCount;
591 } else {
592 Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": session resumed");
593 }
594 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
595 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
596 failedStanzas.add(mStanzaQueue.valueAt(i));
597 }
598 mStanzaQueue.clear();
599 }
600 if (acknowledgedMessages) {
601 mXmppConnectionService.updateConversationUi();
602 }
603 Log.d(Config.LOGTAG, "resending " + failedStanzas.size() + " stanzas");
604 for (AbstractAcknowledgeableStanza packet : failedStanzas) {
605 if (packet instanceof MessagePacket) {
606 MessagePacket message = (MessagePacket) packet;
607 mXmppConnectionService.markMessage(account,
608 message.getTo().asBareJid(),
609 message.getId(),
610 Message.STATUS_UNSEND);
611 }
612 sendPacket(packet);
613 }
614 } catch (final NumberFormatException ignored) {
615 }
616 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
617 changeStatus(Account.State.ONLINE);
618 } else if (nextTag.isStart("r")) {
619 tagReader.readElement(nextTag);
620 if (Config.EXTENDED_SM_LOGGING) {
621 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
622 }
623 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
624 tagWriter.writeStanzaAsync(ack);
625 } else if (nextTag.isStart("a")) {
626 boolean accountUiNeedsRefresh = false;
627 synchronized (NotificationService.CATCHUP_LOCK) {
628 if (mWaitingForSmCatchup.compareAndSet(true, false)) {
629 int count = mSmCatchupMessageCounter.get();
630 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": SM catchup complete (" + count + ")");
631 accountUiNeedsRefresh = true;
632 if (count > 0) {
633 mXmppConnectionService.getNotificationService().finishBacklog(true, account);
634 }
635 }
636 }
637 if (accountUiNeedsRefresh) {
638 mXmppConnectionService.updateAccountUi();
639 }
640 final Element ack = tagReader.readElement(nextTag);
641 lastPacketReceived = SystemClock.elapsedRealtime();
642 try {
643 final boolean acknowledgedMessages;
644 synchronized (this.mStanzaQueue) {
645 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
646 acknowledgedMessages = acknowledgeStanzaUpTo(serverSequence);
647 }
648 if (acknowledgedMessages) {
649 mXmppConnectionService.updateConversationUi();
650 }
651 } catch (NumberFormatException | NullPointerException e) {
652 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server send ack without sequence number");
653 }
654 } else if (nextTag.isStart("failed")) {
655 Element failed = tagReader.readElement(nextTag);
656 try {
657 final int serverCount = Integer.parseInt(failed.getAttribute("h"));
658 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed but server acknowledged stanza #" + serverCount);
659 final boolean acknowledgedMessages;
660 synchronized (this.mStanzaQueue) {
661 acknowledgedMessages = acknowledgeStanzaUpTo(serverCount);
662 }
663 if (acknowledgedMessages) {
664 mXmppConnectionService.updateConversationUi();
665 }
666 } catch (NumberFormatException | NullPointerException e) {
667 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resumption failed");
668 }
669 resetStreamId();
670 sendBindRequest();
671 } else if (nextTag.isStart("iq")) {
672 processIq(nextTag);
673 } else if (nextTag.isStart("message")) {
674 processMessage(nextTag);
675 } else if (nextTag.isStart("presence")) {
676 processPresence(nextTag);
677 }
678 nextTag = tagReader.readTag();
679 }
680 if (nextTag != null && nextTag.isEnd("stream")) {
681 streamCountDownLatch.countDown();
682 }
683 }
684
685 private boolean acknowledgeStanzaUpTo(int serverCount) {
686 if (serverCount > stanzasSent) {
687 Log.e(Config.LOGTAG, "server acknowledged more stanzas than we sent. serverCount=" + serverCount + ", ourCount=" + stanzasSent);
688 }
689 boolean acknowledgedMessages = false;
690 for (int i = 0; i < mStanzaQueue.size(); ++i) {
691 if (serverCount >= mStanzaQueue.keyAt(i)) {
692 if (Config.EXTENDED_SM_LOGGING) {
693 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
694 }
695 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
696 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
697 MessagePacket packet = (MessagePacket) stanza;
698 acknowledgedMessages |= acknowledgedListener.onMessageAcknowledged(account, packet.getId());
699 }
700 mStanzaQueue.removeAt(i);
701 i--;
702 }
703 }
704 return acknowledgedMessages;
705 }
706
707 private @NonNull
708 Element processPacket(final Tag currentTag, final int packetType) throws XmlPullParserException, IOException {
709 Element element;
710 switch (packetType) {
711 case PACKET_IQ:
712 element = new IqPacket();
713 break;
714 case PACKET_MESSAGE:
715 element = new MessagePacket();
716 break;
717 case PACKET_PRESENCE:
718 element = new PresencePacket();
719 break;
720 default:
721 throw new AssertionError("Should never encounter invalid type");
722 }
723 element.setAttributes(currentTag.getAttributes());
724 Tag nextTag = tagReader.readTag();
725 if (nextTag == null) {
726 throw new IOException("interrupted mid tag");
727 }
728 while (!nextTag.isEnd(element.getName())) {
729 if (!nextTag.isNo()) {
730 final Element child = tagReader.readElement(nextTag);
731 final String type = currentTag.getAttribute("type");
732 if (packetType == PACKET_IQ
733 && "jingle".equals(child.getName())
734 && ("set".equalsIgnoreCase(type) || "get"
735 .equalsIgnoreCase(type))) {
736 element = new JinglePacket();
737 element.setAttributes(currentTag.getAttributes());
738 }
739 element.addChild(child);
740 }
741 nextTag = tagReader.readTag();
742 if (nextTag == null) {
743 throw new IOException("interrupted mid tag");
744 }
745 }
746 if (stanzasReceived == Integer.MAX_VALUE) {
747 resetStreamId();
748 throw new IOException("time to restart the session. cant handle >2 billion pcks");
749 }
750 if (inSmacksSession) {
751 ++stanzasReceived;
752 } else if (features.sm()) {
753 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": not counting stanza(" + element.getClass().getSimpleName() + "). Not in smacks session.");
754 }
755 lastPacketReceived = SystemClock.elapsedRealtime();
756 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
757 Log.d(Config.LOGTAG, "[background stanza] " + element);
758 }
759 return element;
760 }
761
762 private void processIq(final Tag currentTag) throws XmlPullParserException, IOException {
763 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
764 if (!packet.valid()) {
765 Log.e(Config.LOGTAG, "encountered invalid iq from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
766 return;
767 }
768 if (packet instanceof JinglePacket) {
769 if (this.jingleListener != null) {
770 this.jingleListener.onJinglePacketReceived(account, (JinglePacket) packet);
771 }
772 } else {
773 OnIqPacketReceived callback = null;
774 synchronized (this.packetCallbacks) {
775 if (packetCallbacks.containsKey(packet.getId())) {
776 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
777 // Packets to the server should have responses from the server
778 if (packetCallbackDuple.first.toServer(account)) {
779 if (packet.fromServer(account)) {
780 callback = packetCallbackDuple.second;
781 packetCallbacks.remove(packet.getId());
782 } else {
783 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
784 }
785 } else {
786 if (packet.getFrom() != null && packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
787 callback = packetCallbackDuple.second;
788 packetCallbacks.remove(packet.getId());
789 } else {
790 Log.e(Config.LOGTAG, account.getJid().asBareJid().toString() + ": ignoring spoofed iq packet");
791 }
792 }
793 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
794 callback = this.unregisteredIqListener;
795 }
796 }
797 if (callback != null) {
798 try {
799 callback.onIqPacketReceived(account, packet);
800 } catch (StateChangingError error) {
801 throw new StateChangingException(error.state);
802 }
803 }
804 }
805 }
806
807 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
808 final MessagePacket packet = (MessagePacket) processPacket(currentTag, PACKET_MESSAGE);
809 if (!packet.valid()) {
810 Log.e(Config.LOGTAG, "encountered invalid message from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
811 return;
812 }
813 this.messageListener.onMessagePacketReceived(account, packet);
814 }
815
816 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
817 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
818 if (!packet.valid()) {
819 Log.e(Config.LOGTAG, "encountered invalid presence from='" + packet.getFrom() + "' to='" + packet.getTo() + "'");
820 return;
821 }
822 this.presenceListener.onPresencePacketReceived(account, packet);
823 }
824
825 private void sendStartTLS() throws IOException {
826 final Tag startTLS = Tag.empty("starttls");
827 startTLS.setAttribute("xmlns", Namespace.TLS);
828 tagWriter.writeTag(startTLS);
829 }
830
831 private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
832 tagReader.readTag();
833 try {
834 final TlsFactoryVerifier tlsFactoryVerifier = getTlsFactoryVerifier();
835 final InetAddress address = socket == null ? null : socket.getInetAddress();
836
837 if (address == null) {
838 throw new IOException("could not setup ssl");
839 }
840
841 final SSLSocket sslSocket = (SSLSocket) tlsFactoryVerifier.factory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
842
843 if (sslSocket == null) {
844 throw new IOException("could not initialize ssl socket");
845 }
846
847 SSLSocketHelper.setSecurity(sslSocket);
848
849 if (!tlsFactoryVerifier.verifier.verify(account.getServer(), this.verifiedHostname, sslSocket.getSession())) {
850 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate verification failed");
851 throw new StateChangingException(Account.State.TLS_ERROR);
852 }
853 tagReader.setInputStream(sslSocket.getInputStream());
854 tagWriter.setOutputStream(sslSocket.getOutputStream());
855 sendStartStream();
856 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
857 features.encryptionEnabled = true;
858 final Tag tag = tagReader.readTag();
859 if (tag != null && tag.isStart("stream")) {
860 SSLSocketHelper.log(account, sslSocket);
861 processStream();
862 } else {
863 throw new IOException("server didn't restart stream after STARTTLS");
864 }
865 sslSocket.close();
866 } catch (final NoSuchAlgorithmException | KeyManagementException e1) {
867 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS certificate verification failed");
868 throw new StateChangingException(Account.State.TLS_ERROR);
869 }
870 }
871
872 private void processStreamFeatures(final Tag currentTag) throws XmlPullParserException, IOException {
873 this.streamFeatures = tagReader.readElement(currentTag);
874 final boolean isSecure = features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS;
875 final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
876 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
877 sendStartTLS();
878 } else if (this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
879 if (isSecure) {
880 sendRegistryRequest();
881 } else {
882 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
883 }
884 } else if (!this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
885 throw new StateChangingException(Account.State.REGISTRATION_NOT_SUPPORTED);
886 } else if (this.streamFeatures.hasChild("mechanisms") && shouldAuthenticate && isSecure) {
887 authenticate();
888 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
889 if (Config.EXTENDED_SM_LOGGING) {
890 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resuming after stanza #" + stanzasReceived);
891 }
892 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
893 this.mSmCatchupMessageCounter.set(0);
894 this.mWaitingForSmCatchup.set(true);
895 this.tagWriter.writeStanzaAsync(resume);
896 } else if (needsBinding) {
897 if (this.streamFeatures.hasChild("bind") && isSecure) {
898 sendBindRequest();
899 } else {
900 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
901 }
902 }
903 }
904
905 private void authenticate() throws IOException {
906 final List<String> mechanisms = extractMechanisms(streamFeatures
907 .findChild("mechanisms"));
908 final Element auth = new Element("auth", Namespace.SASL);
909 if (mechanisms.contains("EXTERNAL") && account.getPrivateKeyAlias() != null) {
910 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
911 } else if (mechanisms.contains("SCRAM-SHA-256")) {
912 saslMechanism = new ScramSha256(tagWriter, account, mXmppConnectionService.getRNG());
913 } else if (mechanisms.contains("SCRAM-SHA-1")) {
914 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
915 } else if (mechanisms.contains("PLAIN") && !account.getJid().getDomain().equals("nimbuzz.com")) {
916 saslMechanism = new Plain(tagWriter, account);
917 } else if (mechanisms.contains("DIGEST-MD5")) {
918 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
919 } else if (mechanisms.contains("ANONYMOUS")) {
920 saslMechanism = new Anonymous(tagWriter, account, mXmppConnectionService.getRNG());
921 }
922 if (saslMechanism != null) {
923 final int pinnedMechanism = account.getKeyAsInt(Account.PINNED_MECHANISM_KEY, -1);
924 if (pinnedMechanism > saslMechanism.getPriority()) {
925 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
926 " has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
927 ") than pinned priority (" + pinnedMechanism +
928 "). Possible downgrade attack?");
929 throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
930 }
931 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
932 auth.setAttribute("mechanism", saslMechanism.getMechanism());
933 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
934 auth.setContent(saslMechanism.getClientFirstMessage());
935 }
936 tagWriter.writeElement(auth);
937 } else {
938 throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
939 }
940 }
941
942 private List<String> extractMechanisms(final Element stream) {
943 final ArrayList<String> mechanisms = new ArrayList<>(stream
944 .getChildren().size());
945 for (final Element child : stream.getChildren()) {
946 mechanisms.add(child.getContent());
947 }
948 return mechanisms;
949 }
950
951 private void sendRegistryRequest() {
952 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
953 register.query("jabber:iq:register");
954 register.setTo(Jid.of(account.getServer()));
955 sendUnmodifiedIqPacket(register, (account, packet) -> {
956 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
957 return;
958 }
959 if (packet.getType() == IqPacket.TYPE.ERROR) {
960 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
961 }
962 final Element query = packet.query("jabber:iq:register");
963 if (query.hasChild("username") && (query.hasChild("password"))) {
964 final IqPacket register1 = new IqPacket(IqPacket.TYPE.SET);
965 final Element username = new Element("username").setContent(account.getUsername());
966 final Element password = new Element("password").setContent(account.getPassword());
967 register1.query("jabber:iq:register").addChild(username);
968 register1.query().addChild(password);
969 register1.setFrom(account.getJid().asBareJid());
970 sendUnmodifiedIqPacket(register1, registrationResponseListener, true);
971 } else if (query.hasChild("x", Namespace.DATA)) {
972 final Data data = Data.parse(query.findChild("x", Namespace.DATA));
973 final Element blob = query.findChild("data", "urn:xmpp:bob");
974 final String id = packet.getId();
975 InputStream is;
976 if (blob != null) {
977 try {
978 final String base64Blob = blob.getContent();
979 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
980 is = new ByteArrayInputStream(strBlob);
981 } catch (Exception e) {
982 is = null;
983 }
984 } else {
985 try {
986 Field field = data.getFieldByName("url");
987 URL url = field != null && field.getValue() != null ? new URL(field.getValue()) : null;
988 is = url != null ? url.openStream() : null;
989 } catch (IOException e) {
990 is = null;
991 }
992 }
993
994 if (is != null) {
995 Bitmap captcha = BitmapFactory.decodeStream(is);
996 try {
997 if (mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha)) {
998 return;
999 }
1000 } catch (Exception e) {
1001 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1002 }
1003 }
1004 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1005 } else if (query.hasChild("instructions") || query.hasChild("x", Namespace.OOB)) {
1006 final String instructions = query.findChildContent("instructions");
1007 final Element oob = query.findChild("x", Namespace.OOB);
1008 final String url = oob == null ? null : oob.findChildContent("url");
1009 if (url != null) {
1010 setAccountCreationFailed(url);
1011 } else if (instructions != null) {
1012 Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
1013 if (matcher.find()) {
1014 setAccountCreationFailed(instructions.substring(matcher.start(), matcher.end()));
1015 }
1016 }
1017 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1018 }
1019 }, true);
1020 }
1021
1022 private void setAccountCreationFailed(String url) {
1023 if (url != null) {
1024 try {
1025 this.redirectionUrl = new URL(url);
1026 if (this.redirectionUrl.getProtocol().equals("https")) {
1027 throw new StateChangingError(Account.State.REGISTRATION_WEB);
1028 }
1029 } catch (MalformedURLException e) {
1030 //fall through
1031 }
1032 }
1033 throw new StateChangingError(Account.State.REGISTRATION_FAILED);
1034 }
1035
1036 public URL getRedirectionUrl() {
1037 return this.redirectionUrl;
1038 }
1039
1040 public void resetEverything() {
1041 resetAttemptCount(true);
1042 resetStreamId();
1043 clearIqCallbacks();
1044 this.stanzasSent = 0;
1045 mStanzaQueue.clear();
1046 this.redirectionUrl = null;
1047 synchronized (this.disco) {
1048 disco.clear();
1049 }
1050 }
1051
1052 private void sendBindRequest() {
1053 try {
1054 mXmppConnectionService.restoredFromDatabaseLatch.await();
1055 } catch (InterruptedException e) {
1056 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while waiting for DB restore during bind");
1057 return;
1058 }
1059 clearIqCallbacks();
1060 if (account.getJid().isBareJid()) {
1061 account.setResource(this.createNewResource());
1062 } else {
1063 fixResource(mXmppConnectionService, account);
1064 }
1065 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1066 final String resource = Config.USE_RANDOM_RESOURCE_ON_EVERY_BIND ? nextRandomId() : account.getResource();
1067 iq.addChild("bind", Namespace.BIND).addChild("resource").setContent(resource);
1068 this.sendUnmodifiedIqPacket(iq, (account, packet) -> {
1069 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
1070 return;
1071 }
1072 final Element bind = packet.findChild("bind");
1073 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
1074 isBound = true;
1075 final Element jid = bind.findChild("jid");
1076 if (jid != null && jid.getContent() != null) {
1077 try {
1078 Jid assignedJid = Jid.ofEscaped(jid.getContent());
1079 if (!account.getJid().getDomain().equals(assignedJid.getDomain())) {
1080 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server tried to re-assign domain to " + assignedJid.getDomain());
1081 throw new StateChangingError(Account.State.BIND_FAILURE);
1082 }
1083 if (account.setJid(assignedJid)) {
1084 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": jid changed during bind. updating database");
1085 mXmppConnectionService.databaseBackend.updateAccount(account);
1086 }
1087 if (streamFeatures.hasChild("session")
1088 && !streamFeatures.findChild("session").hasChild("optional")) {
1089 sendStartSession();
1090 } else {
1091 sendPostBindInitialization();
1092 }
1093 return;
1094 } catch (final IllegalArgumentException e) {
1095 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server reported invalid jid (" + jid.getContent() + ") on bind");
1096 }
1097 } else {
1098 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure. (no jid)");
1099 }
1100 } else {
1101 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet.toString());
1102 }
1103 final Element error = packet.findChild("error");
1104 if (packet.getType() == IqPacket.TYPE.ERROR && error != null && error.hasChild("conflict")) {
1105 account.setResource(createNewResource());
1106 }
1107 throw new StateChangingError(Account.State.BIND_FAILURE);
1108 }, true);
1109 }
1110
1111 private void clearIqCallbacks() {
1112 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1113 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1114 synchronized (this.packetCallbacks) {
1115 if (this.packetCallbacks.size() == 0) {
1116 return;
1117 }
1118 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": clearing " + this.packetCallbacks.size() + " iq callbacks");
1119 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
1120 while (iterator.hasNext()) {
1121 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1122 callbacks.add(entry.second);
1123 iterator.remove();
1124 }
1125 }
1126 for (OnIqPacketReceived callback : callbacks) {
1127 try {
1128 callback.onIqPacketReceived(account, failurePacket);
1129 } catch (StateChangingError error) {
1130 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": caught StateChangingError(" + error.state.toString() + ") while clearing callbacks");
1131 //ignore
1132 }
1133 }
1134 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
1135 }
1136
1137 public void sendDiscoTimeout() {
1138 if (mWaitForDisco.compareAndSet(true, false)) {
1139 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": finalizing bind after disco timeout");
1140 finalizeBind();
1141 }
1142 }
1143
1144 private void sendStartSession() {
1145 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": sending legacy session to outdated server");
1146 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1147 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1148 this.sendUnmodifiedIqPacket(startSession, (account, packet) -> {
1149 if (packet.getType() == IqPacket.TYPE.RESULT) {
1150 sendPostBindInitialization();
1151 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1152 throw new StateChangingError(Account.State.SESSION_FAILURE);
1153 }
1154 }, true);
1155 }
1156
1157 private void sendPostBindInitialization() {
1158 smVersion = 0;
1159 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
1160 smVersion = 3;
1161 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
1162 smVersion = 2;
1163 }
1164 if (smVersion != 0) {
1165 synchronized (this.mStanzaQueue) {
1166 final EnablePacket enable = new EnablePacket(smVersion);
1167 tagWriter.writeStanzaAsync(enable);
1168 stanzasSent = 0;
1169 mStanzaQueue.clear();
1170 }
1171 }
1172 features.carbonsEnabled = false;
1173 features.blockListRequested = false;
1174 synchronized (this.disco) {
1175 this.disco.clear();
1176 }
1177 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": starting service discovery");
1178 mPendingServiceDiscoveries.set(0);
1179 if (smVersion == 0 || Patches.DISCO_EXCEPTIONS.contains(account.getJid().getDomain())) {
1180 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": do not wait for service discovery");
1181 mWaitForDisco.set(false);
1182 } else {
1183 mWaitForDisco.set(true);
1184 }
1185 lastDiscoStarted = SystemClock.elapsedRealtime();
1186 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1187 Element caps = streamFeatures.findChild("c");
1188 final String hash = caps == null ? null : caps.getAttribute("hash");
1189 final String ver = caps == null ? null : caps.getAttribute("ver");
1190 ServiceDiscoveryResult discoveryResult = null;
1191 if (hash != null && ver != null) {
1192 discoveryResult = mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1193 }
1194 final boolean requestDiscoItemsFirst = !account.isOptionSet(Account.OPTION_LOGGED_IN_SUCCESSFULLY);
1195 if (requestDiscoItemsFirst) {
1196 sendServiceDiscoveryItems(Jid.of(account.getServer()));
1197 }
1198 if (discoveryResult == null) {
1199 sendServiceDiscoveryInfo(Jid.of(account.getServer()));
1200 } else {
1201 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": server caps came from cache");
1202 disco.put(Jid.of(account.getServer()), discoveryResult);
1203 }
1204 sendServiceDiscoveryInfo(account.getJid().asBareJid());
1205 if (!requestDiscoItemsFirst) {
1206 sendServiceDiscoveryItems(Jid.of(account.getServer()));
1207 }
1208
1209 if (!mWaitForDisco.get()) {
1210 finalizeBind();
1211 }
1212 this.lastSessionStarted = SystemClock.elapsedRealtime();
1213 }
1214
1215 private void sendServiceDiscoveryInfo(final Jid jid) {
1216 mPendingServiceDiscoveries.incrementAndGet();
1217 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1218 iq.setTo(jid);
1219 iq.query("http://jabber.org/protocol/disco#info");
1220 this.sendIqPacket(iq, (account, packet) -> {
1221 if (packet.getType() == IqPacket.TYPE.RESULT) {
1222 boolean advancedStreamFeaturesLoaded;
1223 synchronized (XmppConnection.this.disco) {
1224 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1225 if (jid.equals(Jid.of(account.getServer()))) {
1226 mXmppConnectionService.databaseBackend.insertDiscoveryResult(result);
1227 }
1228 disco.put(jid, result);
1229 advancedStreamFeaturesLoaded = disco.containsKey(Jid.of(account.getServer()))
1230 && disco.containsKey(account.getJid().asBareJid());
1231 }
1232 if (advancedStreamFeaturesLoaded && (jid.equals(Jid.of(account.getServer())) || jid.equals(account.getJid().asBareJid()))) {
1233 enableAdvancedStreamFeatures();
1234 }
1235 } else {
1236 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco info for " + jid.toString());
1237 }
1238 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1239 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1240 && mWaitForDisco.compareAndSet(true, false)) {
1241 finalizeBind();
1242 }
1243 }
1244 });
1245 }
1246
1247 private void finalizeBind() {
1248 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": online with resource " + account.getResource());
1249 if (bindListener != null) {
1250 bindListener.onBind(account);
1251 }
1252 changeStatus(Account.State.ONLINE);
1253 }
1254
1255 private void enableAdvancedStreamFeatures() {
1256 if (getFeatures().carbons() && !features.carbonsEnabled) {
1257 sendEnableCarbons();
1258 }
1259 if (getFeatures().blocking() && !features.blockListRequested) {
1260 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": Requesting block list");
1261 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1262 }
1263 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1264 listener.onAdvancedStreamFeaturesAvailable(account);
1265 }
1266 }
1267
1268 private void sendServiceDiscoveryItems(final Jid server) {
1269 mPendingServiceDiscoveries.incrementAndGet();
1270 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1271 iq.setTo(Jid.ofDomain(server.getDomain()));
1272 iq.query("http://jabber.org/protocol/disco#items");
1273 this.sendIqPacket(iq, (account, packet) -> {
1274 if (packet.getType() == IqPacket.TYPE.RESULT) {
1275 HashSet<Jid> items = new HashSet<Jid>();
1276 final List<Element> elements = packet.query().getChildren();
1277 for (final Element element : elements) {
1278 if (element.getName().equals("item")) {
1279 final Jid jid = InvalidJid.getNullForInvalid(element.getAttributeAsJid("jid"));
1280 if (jid != null && !jid.equals(Jid.of(account.getServer()))) {
1281 items.add(jid);
1282 }
1283 }
1284 }
1285 for (Jid jid : items) {
1286 sendServiceDiscoveryInfo(jid);
1287 }
1288 } else {
1289 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": could not query disco items of " + server);
1290 }
1291 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1292 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1293 && mWaitForDisco.compareAndSet(true, false)) {
1294 finalizeBind();
1295 }
1296 }
1297 });
1298 }
1299
1300 private void sendEnableCarbons() {
1301 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1302 iq.addChild("enable", "urn:xmpp:carbons:2");
1303 this.sendIqPacket(iq, new OnIqPacketReceived() {
1304
1305 @Override
1306 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1307 if (!packet.hasChild("error")) {
1308 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1309 + ": successfully enabled carbons");
1310 features.carbonsEnabled = true;
1311 } else {
1312 Log.d(Config.LOGTAG, account.getJid().asBareJid()
1313 + ": error enableing carbons " + packet.toString());
1314 }
1315 }
1316 });
1317 }
1318
1319 private void processStreamError(final Tag currentTag) throws XmlPullParserException, IOException {
1320 final Element streamError = tagReader.readElement(currentTag);
1321 if (streamError == null) {
1322 return;
1323 }
1324 if (streamError.hasChild("conflict")) {
1325 account.setResource(createNewResource());
1326 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": switching resource due to conflict (" + account.getResource() + ")");
1327 throw new IOException();
1328 } else if (streamError.hasChild("host-unknown")) {
1329 throw new StateChangingException(Account.State.HOST_UNKNOWN);
1330 } else if (streamError.hasChild("policy-violation")) {
1331 throw new StateChangingException(Account.State.POLICY_VIOLATION);
1332 } else {
1333 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": stream error " + streamError.toString());
1334 throw new StateChangingException(Account.State.STREAM_ERROR);
1335 }
1336 }
1337
1338 private void sendStartStream() throws IOException {
1339 final Tag stream = Tag.start("stream:stream");
1340 stream.setAttribute("to", account.getServer());
1341 stream.setAttribute("version", "1.0");
1342 stream.setAttribute("xml:lang", "en");
1343 stream.setAttribute("xmlns", "jabber:client");
1344 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1345 tagWriter.writeTag(stream);
1346 }
1347
1348 private String createNewResource() {
1349 return mXmppConnectionService.getString(R.string.app_name) + '.' + nextRandomId(true);
1350 }
1351
1352 private String nextRandomId() {
1353 return nextRandomId(false);
1354 }
1355
1356 private String nextRandomId(boolean s) {
1357 return CryptoHelper.random(s ? 3 : 9, mXmppConnectionService.getRNG());
1358 }
1359
1360 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1361 packet.setFrom(account.getJid());
1362 return this.sendUnmodifiedIqPacket(packet, callback, false);
1363 }
1364
1365 public synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback, boolean force) {
1366 if (packet.getId() == null) {
1367 packet.setAttribute("id", nextRandomId());
1368 }
1369 if (callback != null) {
1370 synchronized (this.packetCallbacks) {
1371 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1372 }
1373 }
1374 this.sendPacket(packet, force);
1375 return packet.getId();
1376 }
1377
1378 public void sendMessagePacket(final MessagePacket packet) {
1379 this.sendPacket(packet);
1380 }
1381
1382 public void sendPresencePacket(final PresencePacket packet) {
1383 this.sendPacket(packet);
1384 }
1385
1386 private synchronized void sendPacket(final AbstractStanza packet) {
1387 sendPacket(packet, false);
1388 }
1389
1390 private synchronized void sendPacket(final AbstractStanza packet, final boolean force) {
1391 if (stanzasSent == Integer.MAX_VALUE) {
1392 resetStreamId();
1393 disconnect(true);
1394 return;
1395 }
1396 synchronized (this.mStanzaQueue) {
1397 if (force || isBound) {
1398 tagWriter.writeStanzaAsync(packet);
1399 } else {
1400 Log.d(Config.LOGTAG, account.getJid().asBareJid() + " do not write stanza to unbound stream " + packet.toString());
1401 }
1402 if (packet instanceof AbstractAcknowledgeableStanza) {
1403 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1404
1405 if (this.mStanzaQueue.size() != 0) {
1406 int currentHighestKey = this.mStanzaQueue.keyAt(this.mStanzaQueue.size() - 1);
1407 if (currentHighestKey != stanzasSent) {
1408 throw new AssertionError("Stanza count messed up");
1409 }
1410 }
1411
1412 ++stanzasSent;
1413 this.mStanzaQueue.append(stanzasSent, stanza);
1414 if (stanza instanceof MessagePacket && stanza.getId() != null && inSmacksSession) {
1415 if (Config.EXTENDED_SM_LOGGING) {
1416 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1417 }
1418 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1419 }
1420 }
1421 }
1422 }
1423
1424 public void sendPing() {
1425 if (!r()) {
1426 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1427 iq.setFrom(account.getJid());
1428 iq.addChild("ping", "urn:xmpp:ping");
1429 this.sendIqPacket(iq, null);
1430 }
1431 this.lastPingSent = SystemClock.elapsedRealtime();
1432 }
1433
1434 public void setOnMessagePacketReceivedListener(
1435 final OnMessagePacketReceived listener) {
1436 this.messageListener = listener;
1437 }
1438
1439 public void setOnUnregisteredIqPacketReceivedListener(
1440 final OnIqPacketReceived listener) {
1441 this.unregisteredIqListener = listener;
1442 }
1443
1444 public void setOnPresencePacketReceivedListener(
1445 final OnPresencePacketReceived listener) {
1446 this.presenceListener = listener;
1447 }
1448
1449 public void setOnJinglePacketReceivedListener(
1450 final OnJinglePacketReceived listener) {
1451 this.jingleListener = listener;
1452 }
1453
1454 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1455 this.statusListener = listener;
1456 }
1457
1458 public void setOnBindListener(final OnBindListener listener) {
1459 this.bindListener = listener;
1460 }
1461
1462 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1463 this.acknowledgedListener = listener;
1464 }
1465
1466 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1467 this.advancedStreamFeaturesLoadedListeners.add(listener);
1468 }
1469
1470 private void forceCloseSocket() {
1471 if (socket != null) {
1472 try {
1473 socket.close();
1474 } catch (IOException e) {
1475 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": io exception " + e.getMessage() + " during force close");
1476 }
1477 } else {
1478 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": socket was null during force close");
1479 }
1480 }
1481
1482 public void interrupt() {
1483 if (this.mThread != null) {
1484 this.mThread.interrupt();
1485 }
1486 }
1487
1488 public void disconnect(final boolean force) {
1489 interrupt();
1490 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + Boolean.toString(force));
1491 if (force) {
1492 forceCloseSocket();
1493 } else {
1494 final TagWriter currentTagWriter = this.tagWriter;
1495 if (currentTagWriter.isActive()) {
1496 currentTagWriter.finish();
1497 final Socket currentSocket = this.socket;
1498 final CountDownLatch streamCountDownLatch = this.mStreamCountDownLatch;
1499 try {
1500 currentTagWriter.await(1, TimeUnit.SECONDS);
1501 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": closing stream");
1502 currentTagWriter.writeTag(Tag.end("stream:stream"));
1503 if (streamCountDownLatch != null) {
1504 if (streamCountDownLatch.await(1, TimeUnit.SECONDS)) {
1505 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote ended stream");
1506 } else {
1507 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote has not closed socket. force closing");
1508 }
1509 }
1510 } catch (InterruptedException e) {
1511 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": interrupted while gracefully closing stream");
1512 } catch (final IOException e) {
1513 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": io exception during disconnect (" + e.getMessage() + ")");
1514 } finally {
1515 FileBackend.close(currentSocket);
1516 }
1517 } else {
1518 forceCloseSocket();
1519 }
1520 }
1521 }
1522
1523 private void resetStreamId() {
1524 this.streamId = null;
1525 }
1526
1527 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
1528 synchronized (this.disco) {
1529 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
1530 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
1531 if (cursor.getValue().getFeatures().contains(feature)) {
1532 items.add(cursor);
1533 }
1534 }
1535 return items;
1536 }
1537 }
1538
1539 public Jid findDiscoItemByFeature(final String feature) {
1540 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
1541 if (items.size() >= 1) {
1542 return items.get(0).getKey();
1543 }
1544 return null;
1545 }
1546
1547 public boolean r() {
1548 if (getFeatures().sm()) {
1549 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1550 return true;
1551 } else {
1552 return false;
1553 }
1554 }
1555
1556 public List<String> getMucServersWithholdAccount() {
1557 List<String> servers = getMucServers();
1558 servers.remove(account.getServer());
1559 return servers;
1560 }
1561
1562 public List<String> getMucServers() {
1563 List<String> servers = new ArrayList<>();
1564 synchronized (this.disco) {
1565 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
1566 final ServiceDiscoveryResult value = cursor.getValue();
1567 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
1568 && value.hasIdentity("conference", "text")
1569 && !value.getFeatures().contains("jabber:iq:gateway")
1570 && !value.hasIdentity("conference", "irc")) {
1571 servers.add(cursor.getKey().toString());
1572 }
1573 }
1574 }
1575 return servers;
1576 }
1577
1578 public String getMucServer() {
1579 List<String> servers = getMucServers();
1580 return servers.size() > 0 ? servers.get(0) : null;
1581 }
1582
1583 public int getTimeToNextAttempt() {
1584 final int interval = Math.min((int) (25 * Math.pow(1.3, attempt)), 300);
1585 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1586 return interval - secondsSinceLast;
1587 }
1588
1589 public int getAttempt() {
1590 return this.attempt;
1591 }
1592
1593 public Features getFeatures() {
1594 return this.features;
1595 }
1596
1597 public long getLastSessionEstablished() {
1598 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1599 return System.currentTimeMillis() - diff;
1600 }
1601
1602 public long getLastConnect() {
1603 return this.lastConnect;
1604 }
1605
1606 public long getLastPingSent() {
1607 return this.lastPingSent;
1608 }
1609
1610 public long getLastDiscoStarted() {
1611 return this.lastDiscoStarted;
1612 }
1613
1614 public long getLastPacketReceived() {
1615 return this.lastPacketReceived;
1616 }
1617
1618 public void sendActive() {
1619 this.sendPacket(new ActivePacket());
1620 }
1621
1622 public void sendInactive() {
1623 this.sendPacket(new InactivePacket());
1624 }
1625
1626 public void resetAttemptCount(boolean resetConnectTime) {
1627 this.attempt = 0;
1628 if (resetConnectTime) {
1629 this.lastConnect = 0;
1630 }
1631 }
1632
1633 public void setInteractive(boolean interactive) {
1634 this.mInteractive = interactive;
1635 }
1636
1637 public Identity getServerIdentity() {
1638 synchronized (this.disco) {
1639 ServiceDiscoveryResult result = disco.get(Jid.ofDomain(account.getJid().getDomain()));
1640 if (result == null) {
1641 return Identity.UNKNOWN;
1642 }
1643 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
1644 if (id.getType().equals("im") && id.getCategory().equals("server") && id.getName() != null) {
1645 switch (id.getName()) {
1646 case "Prosody":
1647 return Identity.PROSODY;
1648 case "ejabberd":
1649 return Identity.EJABBERD;
1650 case "Slack-XMPP":
1651 return Identity.SLACK;
1652 }
1653 }
1654 }
1655 }
1656 return Identity.UNKNOWN;
1657 }
1658
1659 private IqGenerator getIqGenerator() {
1660 return mXmppConnectionService.getIqGenerator();
1661 }
1662
1663 public enum Identity {
1664 FACEBOOK,
1665 SLACK,
1666 EJABBERD,
1667 PROSODY,
1668 NIMBUZZ,
1669 UNKNOWN
1670 }
1671
1672 private static class TlsFactoryVerifier {
1673 private final SSLSocketFactory factory;
1674 private final DomainHostnameVerifier verifier;
1675
1676 TlsFactoryVerifier(final SSLSocketFactory factory, final DomainHostnameVerifier verifier) throws IOException {
1677 this.factory = factory;
1678 this.verifier = verifier;
1679 if (factory == null || verifier == null) {
1680 throw new IOException("could not setup ssl");
1681 }
1682 }
1683 }
1684
1685 private class MyKeyManager implements X509KeyManager {
1686 @Override
1687 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
1688 return account.getPrivateKeyAlias();
1689 }
1690
1691 @Override
1692 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
1693 return null;
1694 }
1695
1696 @Override
1697 public X509Certificate[] getCertificateChain(String alias) {
1698 Log.d(Config.LOGTAG, "getting certificate chain");
1699 try {
1700 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
1701 } catch (Exception e) {
1702 Log.d(Config.LOGTAG, e.getMessage());
1703 return new X509Certificate[0];
1704 }
1705 }
1706
1707 @Override
1708 public String[] getClientAliases(String s, Principal[] principals) {
1709 final String alias = account.getPrivateKeyAlias();
1710 return alias != null ? new String[]{alias} : new String[0];
1711 }
1712
1713 @Override
1714 public String[] getServerAliases(String s, Principal[] principals) {
1715 return new String[0];
1716 }
1717
1718 @Override
1719 public PrivateKey getPrivateKey(String alias) {
1720 try {
1721 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
1722 } catch (Exception e) {
1723 return null;
1724 }
1725 }
1726 }
1727
1728 private class StateChangingError extends Error {
1729 private final Account.State state;
1730
1731 public StateChangingError(Account.State state) {
1732 this.state = state;
1733 }
1734 }
1735
1736 private class StateChangingException extends IOException {
1737 private final Account.State state;
1738
1739 public StateChangingException(Account.State state) {
1740 this.state = state;
1741 }
1742 }
1743
1744 public class Features {
1745 XmppConnection connection;
1746 private boolean carbonsEnabled = false;
1747 private boolean encryptionEnabled = false;
1748 private boolean blockListRequested = false;
1749
1750 public Features(final XmppConnection connection) {
1751 this.connection = connection;
1752 }
1753
1754 private boolean hasDiscoFeature(final Jid server, final String feature) {
1755 synchronized (XmppConnection.this.disco) {
1756 return connection.disco.containsKey(server) &&
1757 connection.disco.get(server).getFeatures().contains(feature);
1758 }
1759 }
1760
1761 public boolean carbons() {
1762 return hasDiscoFeature(Jid.of(account.getServer()), "urn:xmpp:carbons:2");
1763 }
1764
1765 public boolean bookmarksConversion() {
1766 return hasDiscoFeature(account.getJid().asBareJid(), Namespace.BOOKMARKS_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(), "urn:xmpp:push:0")
1827 || hasDiscoFeature(Jid.of(account.getServer()), "urn:xmpp:push:0");
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}