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