1package eu.siacs.conversations.xmpp;
2
3import android.graphics.Bitmap;
4import android.graphics.BitmapFactory;
5import android.os.Bundle;
6import android.os.Parcelable;
7import android.os.PowerManager;
8import android.os.PowerManager.WakeLock;
9import android.os.SystemClock;
10import android.security.KeyChain;
11import android.util.Base64;
12import android.util.Log;
13import android.util.Pair;
14import android.util.SparseArray;
15
16import org.json.JSONException;
17import org.json.JSONObject;
18import org.xmlpull.v1.XmlPullParserException;
19
20import java.io.ByteArrayInputStream;
21import java.io.IOException;
22import java.io.InputStream;
23import java.math.BigInteger;
24import java.net.ConnectException;
25import java.net.IDN;
26import java.net.InetAddress;
27import java.net.InetSocketAddress;
28import java.net.Socket;
29import java.net.UnknownHostException;
30import java.net.URL;
31import java.security.KeyManagementException;
32import java.security.NoSuchAlgorithmException;
33import java.security.Principal;
34import java.security.PrivateKey;
35import java.security.cert.X509Certificate;
36import java.util.ArrayList;
37import java.util.Arrays;
38import java.util.HashMap;
39import java.util.Hashtable;
40import java.util.Iterator;
41import java.util.List;
42import java.util.Map.Entry;
43import java.util.concurrent.atomic.AtomicBoolean;
44import java.util.concurrent.atomic.AtomicInteger;
45
46import javax.net.ssl.HostnameVerifier;
47import javax.net.ssl.KeyManager;
48import javax.net.ssl.SSLContext;
49import javax.net.ssl.SSLSession;
50import javax.net.ssl.SSLSocket;
51import javax.net.ssl.SSLSocketFactory;
52import javax.net.ssl.X509KeyManager;
53import javax.net.ssl.X509TrustManager;
54
55import de.duenndns.ssl.MemorizingTrustManager;
56import eu.siacs.conversations.Config;
57import eu.siacs.conversations.crypto.XmppDomainVerifier;
58import eu.siacs.conversations.crypto.sasl.Anonymous;
59import eu.siacs.conversations.crypto.sasl.DigestMd5;
60import eu.siacs.conversations.crypto.sasl.External;
61import eu.siacs.conversations.crypto.sasl.Plain;
62import eu.siacs.conversations.crypto.sasl.SaslMechanism;
63import eu.siacs.conversations.crypto.sasl.ScramSha1;
64import eu.siacs.conversations.entities.Account;
65import eu.siacs.conversations.entities.Message;
66import eu.siacs.conversations.entities.ServiceDiscoveryResult;
67import eu.siacs.conversations.generator.IqGenerator;
68import eu.siacs.conversations.services.XmppConnectionService;
69import eu.siacs.conversations.utils.DNSHelper;
70import eu.siacs.conversations.utils.SSLSocketHelper;
71import eu.siacs.conversations.utils.SocksSocketFactory;
72import eu.siacs.conversations.utils.Xmlns;
73import eu.siacs.conversations.xml.Element;
74import eu.siacs.conversations.xml.Tag;
75import eu.siacs.conversations.xml.TagWriter;
76import eu.siacs.conversations.xml.XmlReader;
77import eu.siacs.conversations.xmpp.forms.Data;
78import eu.siacs.conversations.xmpp.forms.Field;
79import eu.siacs.conversations.xmpp.jid.InvalidJidException;
80import eu.siacs.conversations.xmpp.jid.Jid;
81import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
82import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
83import eu.siacs.conversations.xmpp.stanzas.AbstractAcknowledgeableStanza;
84import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
85import eu.siacs.conversations.xmpp.stanzas.IqPacket;
86import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
87import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
88import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
89import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
90import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
91import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
92import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
93import eu.siacs.conversations.xmpp.stanzas.streammgmt.ResumePacket;
94
95public class XmppConnection implements Runnable {
96
97 private static final int PACKET_IQ = 0;
98 private static final int PACKET_MESSAGE = 1;
99 private static final int PACKET_PRESENCE = 2;
100 protected Account account;
101 private final WakeLock wakeLock;
102 private Socket socket;
103 private XmlReader tagReader;
104 private TagWriter tagWriter;
105 private final Features features = new Features(this);
106 private boolean needsBinding = true;
107 private boolean shouldAuthenticate = true;
108 private Element streamFeatures;
109 private final HashMap<Jid, ServiceDiscoveryResult> disco = new HashMap<>();
110
111 private String streamId = null;
112 private int smVersion = 3;
113 private final SparseArray<AbstractAcknowledgeableStanza> mStanzaQueue = new SparseArray<>();
114
115 private int stanzasReceived = 0;
116 private int stanzasSent = 0;
117 private long lastPacketReceived = 0;
118 private long lastPingSent = 0;
119 private long lastConnect = 0;
120 private long lastSessionStarted = 0;
121 private long lastDiscoStarted = 0;
122 private AtomicInteger mPendingServiceDiscoveries = new AtomicInteger(0);
123 private AtomicBoolean mWaitForDisco = new AtomicBoolean(true);
124 private boolean mInteractive = false;
125 private int attempt = 0;
126 private final Hashtable<String, Pair<IqPacket, OnIqPacketReceived>> packetCallbacks = new Hashtable<>();
127 private OnPresencePacketReceived presenceListener = null;
128 private OnJinglePacketReceived jingleListener = null;
129 private OnIqPacketReceived unregisteredIqListener = null;
130 private OnMessagePacketReceived messageListener = null;
131 private OnStatusChanged statusListener = null;
132 private OnBindListener bindListener = null;
133 private final ArrayList<OnAdvancedStreamFeaturesLoaded> advancedStreamFeaturesLoadedListeners = new ArrayList<>();
134 private OnMessageAcknowledged acknowledgedListener = null;
135 private XmppConnectionService mXmppConnectionService = null;
136
137 private SaslMechanism saslMechanism;
138
139 private class MyKeyManager implements X509KeyManager {
140 @Override
141 public String chooseClientAlias(String[] strings, Principal[] principals, Socket socket) {
142 return account.getPrivateKeyAlias();
143 }
144
145 @Override
146 public String chooseServerAlias(String s, Principal[] principals, Socket socket) {
147 return null;
148 }
149
150 @Override
151 public X509Certificate[] getCertificateChain(String alias) {
152 Log.d(Config.LOGTAG,"getting certificate chain");
153 try {
154 return KeyChain.getCertificateChain(mXmppConnectionService, alias);
155 } catch (Exception e) {
156 Log.d(Config.LOGTAG,e.getMessage());
157 return new X509Certificate[0];
158 }
159 }
160
161 @Override
162 public String[] getClientAliases(String s, Principal[] principals) {
163 return new String[0];
164 }
165
166 @Override
167 public String[] getServerAliases(String s, Principal[] principals) {
168 return new String[0];
169 }
170
171 @Override
172 public PrivateKey getPrivateKey(String alias) {
173 try {
174 return KeyChain.getPrivateKey(mXmppConnectionService, alias);
175 } catch (Exception e) {
176 return null;
177 }
178 }
179 }
180
181 private Identity mServerIdentity = Identity.UNKNOWN;
182
183 public final OnIqPacketReceived registrationResponseListener = new OnIqPacketReceived() {
184 @Override
185 public void onIqPacketReceived(Account account, IqPacket packet) {
186 if (packet.getType() == IqPacket.TYPE.RESULT) {
187 account.setOption(Account.OPTION_REGISTER, false);
188 forceCloseSocket();
189 changeStatus(Account.State.REGISTRATION_SUCCESSFUL);
190 } else {
191 final List<String> PASSWORD_TOO_WEAK_MSGS = Arrays.asList(
192 "The password is too weak",
193 "Please use a longer password.");
194 Element error = packet.findChild("error");
195 Account.State state = Account.State.REGISTRATION_FAILED;
196 if (error != null) {
197 if (error.hasChild("conflict")) {
198 state = Account.State.REGISTRATION_CONFLICT;
199 } else if (error.hasChild("resource-constraint")
200 && "wait".equals(error.getAttribute("type"))) {
201 state = Account.State.REGISTRATION_PLEASE_WAIT;
202 } else if (error.hasChild("not-acceptable")
203 && PASSWORD_TOO_WEAK_MSGS.contains(error.findChildContent("text"))) {
204 state = Account.State.REGISTRATION_PASSWORD_TOO_WEAK;
205 }
206 }
207 changeStatus(state);
208 forceCloseSocket();
209 }
210 }
211 };
212
213 public XmppConnection(final Account account, final XmppConnectionService service) {
214 this.account = account;
215 this.wakeLock = service.getPowerManager().newWakeLock(
216 PowerManager.PARTIAL_WAKE_LOCK, account.getJid().toBareJid().toString());
217 tagWriter = new TagWriter();
218 mXmppConnectionService = service;
219 }
220
221 protected void changeStatus(final Account.State nextStatus) {
222 if (account.getStatus() != nextStatus) {
223 if ((nextStatus == Account.State.OFFLINE)
224 && (account.getStatus() != Account.State.CONNECTING)
225 && (account.getStatus() != Account.State.ONLINE)
226 && (account.getStatus() != Account.State.DISABLED)) {
227 return;
228 }
229 if (nextStatus == Account.State.ONLINE) {
230 this.attempt = 0;
231 }
232 account.setStatus(nextStatus);
233 if (statusListener != null) {
234 statusListener.onStatusChanged(account);
235 }
236 }
237 }
238
239 public void prepareNewConnection() {
240 this.lastConnect = SystemClock.elapsedRealtime();
241 this.lastPingSent = SystemClock.elapsedRealtime();
242 this.lastDiscoStarted = Long.MAX_VALUE;
243 this.changeStatus(Account.State.CONNECTING);
244 }
245
246 protected void connect() {
247 if (mXmppConnectionService.areMessagesInitialized()) {
248 mXmppConnectionService.resetSendingToWaiting(account);
249 }
250 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": connecting");
251 features.encryptionEnabled = false;
252 this.attempt++;
253 switch (account.getJid().getDomainpart()) {
254 case "chat.facebook.com":
255 mServerIdentity = Identity.FACEBOOK;
256 break;
257 case "nimbuzz.com":
258 mServerIdentity = Identity.NIMBUZZ;
259 break;
260 default:
261 mServerIdentity = Identity.UNKNOWN;
262 break;
263 }
264 try {
265 shouldAuthenticate = needsBinding = !account.isOptionSet(Account.OPTION_REGISTER);
266 tagReader = new XmlReader(wakeLock);
267 tagWriter = new TagWriter();
268 this.changeStatus(Account.State.CONNECTING);
269 final boolean useTor = mXmppConnectionService.useTorToConnect() || account.isOnion();
270 final boolean extended = mXmppConnectionService.showExtendedConnectionOptions();
271 if (useTor) {
272 String destination;
273 if (account.getHostname() == null || account.getHostname().isEmpty()) {
274 destination = account.getServer().toString();
275 } else {
276 destination = account.getHostname();
277 }
278 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": connect to " + destination + " via Tor");
279 socket = SocksSocketFactory.createSocketOverTor(destination, account.getPort());
280 startXmpp();
281 } else if (extended && account.getHostname() != null && !account.getHostname().isEmpty()) {
282
283 InetSocketAddress address = new InetSocketAddress(account.getHostname(), account.getPort());
284
285 features.encryptionEnabled = account.getPort() == 5223;
286
287 try {
288 if (features.encryptionEnabled) {
289 try {
290 final TlsFactoryVerifier tlsFactoryVerifier = getTlsFactoryVerifier();
291 socket = tlsFactoryVerifier.factory.createSocket();
292 socket.connect(address, Config.SOCKET_TIMEOUT * 1000);
293 final SSLSession session = ((SSLSocket) socket).getSession();
294 if (!tlsFactoryVerifier.verifier.verify(account.getServer().getDomainpart(), session)) {
295 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": TLS certificate verification failed");
296 throw new SecurityException();
297 }
298 } catch (KeyManagementException e) {
299 features.encryptionEnabled = false;
300 socket = new Socket();
301 }
302 } else {
303 socket = new Socket();
304 socket.connect(address, Config.SOCKET_TIMEOUT * 1000);
305 }
306 } catch (IOException e) {
307 throw new UnknownHostException();
308 }
309 startXmpp();
310 } else if (DNSHelper.isIp(account.getServer().toString())) {
311 socket = new Socket();
312 try {
313 socket.connect(new InetSocketAddress(account.getServer().toString(), 5222), Config.SOCKET_TIMEOUT * 1000);
314 } catch (IOException e) {
315 throw new UnknownHostException();
316 }
317 startXmpp();
318 } else {
319 final Bundle result = DNSHelper.getSRVRecord(account.getServer(), mXmppConnectionService);
320 final ArrayList<Parcelable> values = result.getParcelableArrayList("values");
321 for (Iterator<Parcelable> iterator = values.iterator(); iterator.hasNext(); ) {
322 if (Thread.currentThread().isInterrupted()) {
323 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": Thread was interrupted");
324 return;
325 }
326 final Bundle namePort = (Bundle) iterator.next();
327 try {
328 String srvRecordServer;
329 try {
330 srvRecordServer = IDN.toASCII(namePort.getString("name"));
331 } catch (final IllegalArgumentException e) {
332 // TODO: Handle me?`
333 srvRecordServer = "";
334 }
335 final int srvRecordPort = namePort.getInt("port");
336 final String srvIpServer = namePort.getString("ip");
337 // if tls is true, encryption is implied and must not be started
338 features.encryptionEnabled = namePort.getBoolean("tls");
339 final InetSocketAddress addr;
340 if (srvIpServer != null) {
341 addr = new InetSocketAddress(srvIpServer, srvRecordPort);
342 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
343 + ": using values from dns " + srvRecordServer
344 + "[" + srvIpServer + "]:" + srvRecordPort + " tls: " + features.encryptionEnabled);
345 } else {
346 addr = new InetSocketAddress(srvRecordServer, srvRecordPort);
347 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
348 + ": using values from dns "
349 + srvRecordServer + ":" + srvRecordPort + " tls: " + features.encryptionEnabled);
350 }
351
352 if (!features.encryptionEnabled) {
353 socket = new Socket();
354 socket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
355 } else {
356 final TlsFactoryVerifier tlsFactoryVerifier = getTlsFactoryVerifier();
357 socket = tlsFactoryVerifier.factory.createSocket();
358
359 if (socket == null) {
360 throw new IOException("could not initialize ssl socket");
361 }
362
363 SSLSocketHelper.setSecurity((SSLSocket) socket);
364 SSLSocketHelper.setSNIHost(tlsFactoryVerifier.factory, (SSLSocket) socket, account.getServer().getDomainpart());
365 SSLSocketHelper.setAlpnProtocol(tlsFactoryVerifier.factory, (SSLSocket) socket, "xmpp-client");
366
367 socket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
368
369 if (!tlsFactoryVerifier.verifier.verify(account.getServer().getDomainpart(), ((SSLSocket) socket).getSession())) {
370 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": TLS certificate verification failed");
371 throw new SecurityException();
372 }
373 }
374
375 if (startXmpp())
376 break; // successfully connected to server that speaks xmpp
377 } catch (final SecurityException e) {
378 throw e;
379 } catch (final Throwable e) {
380 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage() + "(" + e.getClass().getName() + ")");
381 if (!iterator.hasNext()) {
382 throw new UnknownHostException();
383 }
384 }
385 }
386 }
387 processStream();
388 } catch (final java.lang.SecurityException e) {
389 this.changeStatus(Account.State.MISSING_INTERNET_PERMISSION);
390 } catch (final IncompatibleServerException e) {
391 this.changeStatus(Account.State.INCOMPATIBLE_SERVER);
392 } catch (final SecurityException e) {
393 this.changeStatus(Account.State.SECURITY_ERROR);
394 } catch (final UnauthorizedException e) {
395 this.changeStatus(Account.State.UNAUTHORIZED);
396 } catch (final PaymentRequiredException e) {
397 this.changeStatus(Account.State.PAYMENT_REQUIRED);
398 } catch (final UnknownHostException | ConnectException e) {
399 this.changeStatus(Account.State.SERVER_NOT_FOUND);
400 } catch (final SocksSocketFactory.SocksProxyNotFoundException e) {
401 this.changeStatus(Account.State.TOR_NOT_AVAILABLE);
402 } catch(final StreamErrorHostUnknown e) {
403 this.changeStatus(Account.State.HOST_UNKNOWN);
404 } catch(final StreamErrorPolicyViolation e) {
405 this.changeStatus(Account.State.POLICY_VIOLATION);
406 } catch(final StreamError e) {
407 this.changeStatus(Account.State.STREAM_ERROR);
408 } catch (final IOException | XmlPullParserException | NoSuchAlgorithmException e) {
409 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
410 this.changeStatus(Account.State.OFFLINE);
411 this.attempt = Math.max(0, this.attempt - 1);
412 } finally {
413 forceCloseSocket();
414 if (wakeLock.isHeld()) {
415 try {
416 wakeLock.release();
417 } catch (final RuntimeException ignored) {
418 }
419 }
420 }
421 }
422
423 /**
424 * Starts xmpp protocol, call after connecting to socket
425 * @return true if server returns with valid xmpp, false otherwise
426 * @throws IOException Unknown tag on connect
427 * @throws XmlPullParserException Bad Xml
428 * @throws NoSuchAlgorithmException Other error
429 */
430 private boolean startXmpp() throws IOException, XmlPullParserException, NoSuchAlgorithmException {
431 tagWriter.setOutputStream(socket.getOutputStream());
432 tagReader.setInputStream(socket.getInputStream());
433 tagWriter.beginDocument();
434 sendStartStream();
435 Tag nextTag;
436 while ((nextTag = tagReader.readTag()) != null) {
437 if (nextTag.isStart("stream")) {
438 return true;
439 } else {
440 throw new IOException("unknown tag on connect");
441 }
442 }
443 if (socket.isConnected()) {
444 socket.close();
445 }
446 return false;
447 }
448
449 private static class TlsFactoryVerifier {
450 private final SSLSocketFactory factory;
451 private final HostnameVerifier verifier;
452
453 public TlsFactoryVerifier(final SSLSocketFactory factory, final HostnameVerifier verifier) throws IOException {
454 this.factory = factory;
455 this.verifier = verifier;
456 if (factory == null || verifier == null) {
457 throw new IOException("could not setup ssl");
458 }
459 }
460 }
461
462 private TlsFactoryVerifier getTlsFactoryVerifier() throws NoSuchAlgorithmException, KeyManagementException, IOException {
463 final SSLContext sc = SSLSocketHelper.getSSLContext();
464 MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
465 KeyManager[] keyManager;
466 if (account.getPrivateKeyAlias() != null && account.getPassword().isEmpty()) {
467 keyManager = new KeyManager[]{new MyKeyManager()};
468 } else {
469 keyManager = null;
470 }
471 sc.init(keyManager, new X509TrustManager[]{mInteractive ? trustManager : trustManager.getNonInteractive()}, mXmppConnectionService.getRNG());
472 final SSLSocketFactory factory = sc.getSocketFactory();
473 final HostnameVerifier verifier;
474 if (mInteractive) {
475 verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier());
476 } else {
477 verifier = trustManager.wrapHostnameVerifierNonInteractive(new XmppDomainVerifier());
478 }
479
480 return new TlsFactoryVerifier(factory, verifier);
481 }
482
483 @Override
484 public void run() {
485 forceCloseSocket();
486 connect();
487 }
488
489 private void processStream() throws XmlPullParserException, IOException, NoSuchAlgorithmException {
490 Tag nextTag = tagReader.readTag();
491 while (nextTag != null && !nextTag.isEnd("stream")) {
492 if (nextTag.isStart("error")) {
493 processStreamError(nextTag);
494 } else if (nextTag.isStart("features")) {
495 processStreamFeatures(nextTag);
496 } else if (nextTag.isStart("proceed")) {
497 switchOverToTls(nextTag);
498 } else if (nextTag.isStart("success")) {
499 final String challenge = tagReader.readElement(nextTag).getContent();
500 try {
501 saslMechanism.getResponse(challenge);
502 } catch (final SaslMechanism.AuthenticationException e) {
503 disconnect(true);
504 Log.e(Config.LOGTAG, String.valueOf(e));
505 }
506 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": logged in");
507 account.setKey(Account.PINNED_MECHANISM_KEY,
508 String.valueOf(saslMechanism.getPriority()));
509 tagReader.reset();
510 sendStartStream();
511 final Tag tag = tagReader.readTag();
512 if (tag != null && tag.isStart("stream")) {
513 processStream();
514 } else {
515 throw new IOException("server didn't restart stream after successful auth");
516 }
517 break;
518 } else if (nextTag.isStart("failure")) {
519 final Element failure = tagReader.readElement(nextTag);
520 final String text = failure.findChildContent("text");
521 if (failure.hasChild("account-disabled")
522 && text != null
523 && text.contains("renew")
524 && Config.MAGIC_CREATE_DOMAIN != null
525 && text.contains(Config.MAGIC_CREATE_DOMAIN)) {
526 throw new PaymentRequiredException();
527 } else {
528 throw new UnauthorizedException();
529 }
530 } else if (nextTag.isStart("challenge")) {
531 final String challenge = tagReader.readElement(nextTag).getContent();
532 final Element response = new Element("response");
533 response.setAttribute("xmlns",
534 "urn:ietf:params:xml:ns:xmpp-sasl");
535 try {
536 response.setContent(saslMechanism.getResponse(challenge));
537 } catch (final SaslMechanism.AuthenticationException e) {
538 // TODO: Send auth abort tag.
539 Log.e(Config.LOGTAG, e.toString());
540 }
541 tagWriter.writeElement(response);
542 } else if (nextTag.isStart("enabled")) {
543 final Element enabled = tagReader.readElement(nextTag);
544 if ("true".equals(enabled.getAttribute("resume"))) {
545 this.streamId = enabled.getAttribute("id");
546 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
547 + ": stream management(" + smVersion
548 + ") enabled (resumable)");
549 } else {
550 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
551 + ": stream management(" + smVersion + ") enabled");
552 }
553 this.stanzasReceived = 0;
554 final RequestPacket r = new RequestPacket(smVersion);
555 tagWriter.writeStanzaAsync(r);
556 } else if (nextTag.isStart("resumed")) {
557 lastPacketReceived = SystemClock.elapsedRealtime();
558 final Element resumed = tagReader.readElement(nextTag);
559 final String h = resumed.getAttribute("h");
560 try {
561 ArrayList<AbstractAcknowledgeableStanza> failedStanzas = new ArrayList<>();
562 synchronized (this.mStanzaQueue) {
563 final int serverCount = Integer.parseInt(h);
564 if (serverCount != stanzasSent) {
565 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
566 + ": session resumed with lost packages");
567 stanzasSent = serverCount;
568 } else {
569 Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": session resumed");
570 }
571 acknowledgeStanzaUpTo(serverCount);
572 for (int i = 0; i < this.mStanzaQueue.size(); ++i) {
573 failedStanzas.add(mStanzaQueue.valueAt(i));
574 }
575 mStanzaQueue.clear();
576 }
577 Log.d(Config.LOGTAG, "resending " + failedStanzas.size() + " stanzas");
578 for (AbstractAcknowledgeableStanza packet : failedStanzas) {
579 if (packet instanceof MessagePacket) {
580 MessagePacket message = (MessagePacket) packet;
581 mXmppConnectionService.markMessage(account,
582 message.getTo().toBareJid(),
583 message.getId(),
584 Message.STATUS_UNSEND);
585 }
586 sendPacket(packet);
587 }
588 } catch (final NumberFormatException ignored) {
589 }
590 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": online with resource " + account.getResource());
591 changeStatus(Account.State.ONLINE);
592 } else if (nextTag.isStart("r")) {
593 tagReader.readElement(nextTag);
594 if (Config.EXTENDED_SM_LOGGING) {
595 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": acknowledging stanza #" + this.stanzasReceived);
596 }
597 final AckPacket ack = new AckPacket(this.stanzasReceived, smVersion);
598 tagWriter.writeStanzaAsync(ack);
599 } else if (nextTag.isStart("a")) {
600 final Element ack = tagReader.readElement(nextTag);
601 lastPacketReceived = SystemClock.elapsedRealtime();
602 try {
603 synchronized (this.mStanzaQueue) {
604 final int serverSequence = Integer.parseInt(ack.getAttribute("h"));
605 acknowledgeStanzaUpTo(serverSequence);
606 }
607 } catch (NumberFormatException | NullPointerException e) {
608 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": server send ack without sequence number");
609 }
610 } else if (nextTag.isStart("failed")) {
611 Element failed = tagReader.readElement(nextTag);
612 try {
613 final int serverCount = Integer.parseInt(failed.getAttribute("h"));
614 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": resumption failed but server acknowledged stanza #"+serverCount);
615 synchronized (this.mStanzaQueue) {
616 acknowledgeStanzaUpTo(serverCount);
617 }
618 } catch (NumberFormatException | NullPointerException e) {
619 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": resumption failed");
620 }
621 resetStreamId();
622 if (account.getStatus() != Account.State.ONLINE) {
623 sendBindRequest();
624 }
625 } else if (nextTag.isStart("iq")) {
626 processIq(nextTag);
627 } else if (nextTag.isStart("message")) {
628 processMessage(nextTag);
629 } else if (nextTag.isStart("presence")) {
630 processPresence(nextTag);
631 }
632 nextTag = tagReader.readTag();
633 }
634 }
635
636 private void acknowledgeStanzaUpTo(int serverCount) {
637 for (int i = 0; i < mStanzaQueue.size(); ++i) {
638 if (serverCount >= mStanzaQueue.keyAt(i)) {
639 if (Config.EXTENDED_SM_LOGGING) {
640 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server acknowledged stanza #" + mStanzaQueue.keyAt(i));
641 }
642 AbstractAcknowledgeableStanza stanza = mStanzaQueue.valueAt(i);
643 if (stanza instanceof MessagePacket && acknowledgedListener != null) {
644 MessagePacket packet = (MessagePacket) stanza;
645 acknowledgedListener.onMessageAcknowledged(account, packet.getId());
646 }
647 mStanzaQueue.removeAt(i);
648 i--;
649 }
650 }
651 }
652
653 private Element processPacket(final Tag currentTag, final int packetType)
654 throws XmlPullParserException, IOException {
655 Element element;
656 switch (packetType) {
657 case PACKET_IQ:
658 element = new IqPacket();
659 break;
660 case PACKET_MESSAGE:
661 element = new MessagePacket();
662 break;
663 case PACKET_PRESENCE:
664 element = new PresencePacket();
665 break;
666 default:
667 return null;
668 }
669 element.setAttributes(currentTag.getAttributes());
670 Tag nextTag = tagReader.readTag();
671 if (nextTag == null) {
672 throw new IOException("interrupted mid tag");
673 }
674 while (!nextTag.isEnd(element.getName())) {
675 if (!nextTag.isNo()) {
676 final Element child = tagReader.readElement(nextTag);
677 final String type = currentTag.getAttribute("type");
678 if (packetType == PACKET_IQ
679 && "jingle".equals(child.getName())
680 && ("set".equalsIgnoreCase(type) || "get"
681 .equalsIgnoreCase(type))) {
682 element = new JinglePacket();
683 element.setAttributes(currentTag.getAttributes());
684 }
685 element.addChild(child);
686 }
687 nextTag = tagReader.readTag();
688 if (nextTag == null) {
689 throw new IOException("interrupted mid tag");
690 }
691 }
692 if (stanzasReceived == Integer.MAX_VALUE) {
693 resetStreamId();
694 throw new IOException("time to restart the session. cant handle >2 billion pcks");
695 }
696 ++stanzasReceived;
697 lastPacketReceived = SystemClock.elapsedRealtime();
698 if (Config.BACKGROUND_STANZA_LOGGING && mXmppConnectionService.checkListeners()) {
699 Log.d(Config.LOGTAG,"[background stanza] "+element);
700 }
701 return element;
702 }
703
704 private void processIq(final Tag currentTag) throws XmlPullParserException, IOException {
705 final IqPacket packet = (IqPacket) processPacket(currentTag, PACKET_IQ);
706
707 if (packet.getId() == null) {
708 return; // an iq packet without id is definitely invalid
709 }
710
711 if (packet instanceof JinglePacket) {
712 if (this.jingleListener != null) {
713 this.jingleListener.onJinglePacketReceived(account,(JinglePacket) packet);
714 }
715 } else {
716 OnIqPacketReceived callback = null;
717 synchronized (this.packetCallbacks) {
718 if (packetCallbacks.containsKey(packet.getId())) {
719 final Pair<IqPacket, OnIqPacketReceived> packetCallbackDuple = packetCallbacks.get(packet.getId());
720 // Packets to the server should have responses from the server
721 if (packetCallbackDuple.first.toServer(account)) {
722 if (packet.fromServer(account) || mServerIdentity == Identity.FACEBOOK) {
723 callback = packetCallbackDuple.second;
724 packetCallbacks.remove(packet.getId());
725 } else {
726 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
727 }
728 } else {
729 if (packet.getFrom().equals(packetCallbackDuple.first.getTo())) {
730 callback = packetCallbackDuple.second;
731 packetCallbacks.remove(packet.getId());
732 } else {
733 Log.e(Config.LOGTAG, account.getJid().toBareJid().toString() + ": ignoring spoofed iq packet");
734 }
735 }
736 } else if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
737 callback = this.unregisteredIqListener;
738 }
739 }
740 if (callback != null) {
741 callback.onIqPacketReceived(account,packet);
742 }
743 }
744 }
745
746 private void processMessage(final Tag currentTag) throws XmlPullParserException, IOException {
747 final MessagePacket packet = (MessagePacket) processPacket(currentTag,PACKET_MESSAGE);
748 this.messageListener.onMessagePacketReceived(account, packet);
749 }
750
751 private void processPresence(final Tag currentTag) throws XmlPullParserException, IOException {
752 PresencePacket packet = (PresencePacket) processPacket(currentTag, PACKET_PRESENCE);
753 this.presenceListener.onPresencePacketReceived(account, packet);
754 }
755
756 private void sendStartTLS() throws IOException {
757 final Tag startTLS = Tag.empty("starttls");
758 startTLS.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-tls");
759 tagWriter.writeTag(startTLS);
760 }
761
762
763
764 private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
765 tagReader.readTag();
766 try {
767 final TlsFactoryVerifier tlsFactoryVerifier = getTlsFactoryVerifier();
768 final InetAddress address = socket == null ? null : socket.getInetAddress();
769
770 if (address == null) {
771 throw new IOException("could not setup ssl");
772 }
773
774 final SSLSocket sslSocket = (SSLSocket) tlsFactoryVerifier.factory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
775
776 if (sslSocket == null) {
777 throw new IOException("could not initialize ssl socket");
778 }
779
780 SSLSocketHelper.setSecurity(sslSocket);
781
782 if (!tlsFactoryVerifier.verifier.verify(account.getServer().getDomainpart(), sslSocket.getSession())) {
783 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": TLS certificate verification failed");
784 throw new SecurityException();
785 }
786 tagReader.setInputStream(sslSocket.getInputStream());
787 tagWriter.setOutputStream(sslSocket.getOutputStream());
788 sendStartStream();
789 Log.d(Config.LOGTAG, account.getJid().toBareJid()+ ": TLS connection established");
790 features.encryptionEnabled = true;
791 final Tag tag = tagReader.readTag();
792 if (tag != null && tag.isStart("stream")) {
793 processStream();
794 } else {
795 throw new IOException("server didn't restart stream after STARTTLS");
796 }
797 sslSocket.close();
798 } catch (final NoSuchAlgorithmException | KeyManagementException e1) {
799 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": TLS certificate verification failed");
800 throw new SecurityException();
801 }
802 }
803
804 private void processStreamFeatures(final Tag currentTag)
805 throws XmlPullParserException, IOException {
806 this.streamFeatures = tagReader.readElement(currentTag);
807 if (this.streamFeatures.hasChild("starttls") && !features.encryptionEnabled) {
808 sendStartTLS();
809 } else if (this.streamFeatures.hasChild("register") && account.isOptionSet(Account.OPTION_REGISTER)) {
810 if (features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS) {
811 sendRegistryRequest();
812 } else {
813 throw new IncompatibleServerException();
814 }
815 } else if (!this.streamFeatures.hasChild("register")
816 && account.isOptionSet(Account.OPTION_REGISTER)) {
817 forceCloseSocket();
818 changeStatus(Account.State.REGISTRATION_NOT_SUPPORTED);
819 } else if (this.streamFeatures.hasChild("mechanisms")
820 && shouldAuthenticate
821 && (features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS)) {
822 authenticate();
823 } else if (this.streamFeatures.hasChild("sm", "urn:xmpp:sm:" + smVersion) && streamId != null) {
824 if (Config.EXTENDED_SM_LOGGING) {
825 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": resuming after stanza #"+stanzasReceived);
826 }
827 final ResumePacket resume = new ResumePacket(this.streamId, stanzasReceived, smVersion);
828 this.tagWriter.writeStanzaAsync(resume);
829 } else if (needsBinding) {
830 if (this.streamFeatures.hasChild("bind")) {
831 sendBindRequest();
832 } else {
833 throw new IncompatibleServerException();
834 }
835 }
836 }
837
838 private void authenticate() throws IOException {
839 final List<String> mechanisms = extractMechanisms(streamFeatures
840 .findChild("mechanisms"));
841 final Element auth = new Element("auth");
842 auth.setAttribute("xmlns", "urn:ietf:params:xml:ns:xmpp-sasl");
843 if (mechanisms.contains("EXTERNAL") && account.getPrivateKeyAlias() != null) {
844 saslMechanism = new External(tagWriter, account, mXmppConnectionService.getRNG());
845 } else if (mechanisms.contains("SCRAM-SHA-1")) {
846 saslMechanism = new ScramSha1(tagWriter, account, mXmppConnectionService.getRNG());
847 } else if (mechanisms.contains("PLAIN")) {
848 saslMechanism = new Plain(tagWriter, account);
849 } else if (mechanisms.contains("DIGEST-MD5")) {
850 saslMechanism = new DigestMd5(tagWriter, account, mXmppConnectionService.getRNG());
851 } else if (mechanisms.contains("ANONYMOUS")) {
852 saslMechanism = new Anonymous(tagWriter, account, mXmppConnectionService.getRNG());
853 }
854 if (saslMechanism != null) {
855 final int pinnedMechanism = account.getKeyAsInt(Account.PINNED_MECHANISM_KEY, -1);
856 if (pinnedMechanism > saslMechanism.getPriority()) {
857 Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
858 " has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
859 ") than pinned priority (" + pinnedMechanism +
860 "). Possible downgrade attack?");
861 throw new SecurityException();
862 }
863 Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
864 auth.setAttribute("mechanism", saslMechanism.getMechanism());
865 if (!saslMechanism.getClientFirstMessage().isEmpty()) {
866 auth.setContent(saslMechanism.getClientFirstMessage());
867 }
868 tagWriter.writeElement(auth);
869 } else {
870 throw new IncompatibleServerException();
871 }
872 }
873
874 private List<String> extractMechanisms(final Element stream) {
875 final ArrayList<String> mechanisms = new ArrayList<>(stream
876 .getChildren().size());
877 for (final Element child : stream.getChildren()) {
878 mechanisms.add(child.getContent());
879 }
880 return mechanisms;
881 }
882
883 private void sendRegistryRequest() {
884 final IqPacket register = new IqPacket(IqPacket.TYPE.GET);
885 register.query("jabber:iq:register");
886 register.setTo(account.getServer());
887 sendUnmodifiedIqPacket(register, new OnIqPacketReceived() {
888
889 @Override
890 public void onIqPacketReceived(final Account account, final IqPacket packet) {
891 boolean failed = false;
892 if (packet.getType() == IqPacket.TYPE.RESULT
893 && packet.query().hasChild("username")
894 && (packet.query().hasChild("password"))) {
895 final IqPacket register = new IqPacket(IqPacket.TYPE.SET);
896 final Element username = new Element("username").setContent(account.getUsername());
897 final Element password = new Element("password").setContent(account.getPassword());
898 register.query("jabber:iq:register").addChild(username);
899 register.query().addChild(password);
900 register.setFrom(account.getJid().toBareJid());
901 sendUnmodifiedIqPacket(register, registrationResponseListener);
902 } else if (packet.getType() == IqPacket.TYPE.RESULT
903 && (packet.query().hasChild("x", "jabber:x:data"))) {
904 final Data data = Data.parse(packet.query().findChild("x", "jabber:x:data"));
905 final Element blob = packet.query().findChild("data", "urn:xmpp:bob");
906 final String id = packet.getId();
907
908 Bitmap captcha = null;
909 if (blob != null) {
910 try {
911 final String base64Blob = blob.getContent();
912 final byte[] strBlob = Base64.decode(base64Blob, Base64.DEFAULT);
913 InputStream stream = new ByteArrayInputStream(strBlob);
914 captcha = BitmapFactory.decodeStream(stream);
915 } catch (Exception e) {
916 //ignored
917 }
918 } else {
919 try {
920 Field url = data.getFieldByName("url");
921 String urlString = url.findChildContent("value");
922 URL uri = new URL(urlString);
923 captcha = BitmapFactory.decodeStream(uri.openConnection().getInputStream());
924 } catch (IOException e) {
925 Log.e(Config.LOGTAG, e.toString());
926 }
927 }
928
929 if (captcha != null) {
930 failed = !mXmppConnectionService.displayCaptchaRequest(account, id, data, captcha);
931 }
932 } else {
933 failed = true;
934 }
935
936 if (failed) {
937 final Element instructions = packet.query().findChild("instructions");
938 setAccountCreationFailed((instructions != null) ? instructions.getContent() : "");
939 }
940 }
941 });
942 }
943
944 private void setAccountCreationFailed(String instructions) {
945 changeStatus(Account.State.REGISTRATION_FAILED);
946 disconnect(true);
947 Log.d(Config.LOGTAG, account.getJid().toBareJid()
948 + ": could not register. instructions are"
949 + instructions);
950 }
951
952 public void resetEverything() {
953 resetAttemptCount(true);
954 resetStreamId();
955 clearIqCallbacks();
956 mStanzaQueue.clear();
957 synchronized (this.disco) {
958 disco.clear();
959 }
960 }
961
962 private void sendBindRequest() {
963 while(!mXmppConnectionService.areMessagesInitialized() && socket != null && !socket.isClosed()) {
964 try {
965 Thread.sleep(500);
966 } catch (final InterruptedException ignored) {
967 }
968 }
969 needsBinding = false;
970 clearIqCallbacks();
971 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
972 iq.addChild("bind", "urn:ietf:params:xml:ns:xmpp-bind")
973 .addChild("resource").setContent(account.getResource());
974 this.sendUnmodifiedIqPacket(iq, new OnIqPacketReceived() {
975 @Override
976 public void onIqPacketReceived(final Account account, final IqPacket packet) {
977 if (packet.getType() == IqPacket.TYPE.TIMEOUT) {
978 return;
979 }
980 final Element bind = packet.findChild("bind");
981 if (bind != null && packet.getType() == IqPacket.TYPE.RESULT) {
982 final Element jid = bind.findChild("jid");
983 if (jid != null && jid.getContent() != null) {
984 try {
985 if (account.setJid(Jid.fromString(jid.getContent()))) {
986 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": bare jid changed during bind. updating database");
987 mXmppConnectionService.databaseBackend.updateAccount(account);
988 }
989 if (streamFeatures.hasChild("session")
990 && !streamFeatures.findChild("session").hasChild("optional")) {
991 sendStartSession();
992 } else {
993 sendPostBindInitialization();
994 }
995 return;
996 } catch (final InvalidJidException e) {
997 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": server reported invalid jid ("+jid.getContent()+") on bind");
998 }
999 } else {
1000 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure. (no jid)");
1001 }
1002 } else {
1003 Log.d(Config.LOGTAG, account.getJid() + ": disconnecting because of bind failure (" + packet.toString());
1004 }
1005 forceCloseSocket();
1006 changeStatus(Account.State.BIND_FAILURE);
1007 }
1008 });
1009 }
1010
1011 private void clearIqCallbacks() {
1012 final IqPacket failurePacket = new IqPacket(IqPacket.TYPE.TIMEOUT);
1013 final ArrayList<OnIqPacketReceived> callbacks = new ArrayList<>();
1014 synchronized (this.packetCallbacks) {
1015 if (this.packetCallbacks.size() == 0) {
1016 return;
1017 }
1018 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": clearing "+this.packetCallbacks.size()+" iq callbacks");
1019 final Iterator<Pair<IqPacket, OnIqPacketReceived>> iterator = this.packetCallbacks.values().iterator();
1020 while (iterator.hasNext()) {
1021 Pair<IqPacket, OnIqPacketReceived> entry = iterator.next();
1022 callbacks.add(entry.second);
1023 iterator.remove();
1024 }
1025 }
1026 for(OnIqPacketReceived callback : callbacks) {
1027 callback.onIqPacketReceived(account,failurePacket);
1028 }
1029 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": done clearing iq callbacks. " + this.packetCallbacks.size() + " left");
1030 }
1031
1032 public void sendDiscoTimeout() {
1033 if (mWaitForDisco.compareAndSet(true, false)) {
1034 finalizeBind();
1035 }
1036 }
1037
1038 private void sendStartSession() {
1039 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": sending legacy session to outdated server");
1040 final IqPacket startSession = new IqPacket(IqPacket.TYPE.SET);
1041 startSession.addChild("session", "urn:ietf:params:xml:ns:xmpp-session");
1042 this.sendUnmodifiedIqPacket(startSession, new OnIqPacketReceived() {
1043 @Override
1044 public void onIqPacketReceived(Account account, IqPacket packet) {
1045 if (packet.getType() == IqPacket.TYPE.RESULT) {
1046 sendPostBindInitialization();
1047 } else if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1048 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not init sessions");
1049 disconnect(true);
1050 }
1051 }
1052 });
1053 }
1054
1055 private void sendPostBindInitialization() {
1056 smVersion = 0;
1057 if (streamFeatures.hasChild("sm", "urn:xmpp:sm:3")) {
1058 smVersion = 3;
1059 } else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
1060 smVersion = 2;
1061 }
1062 if (smVersion != 0) {
1063 synchronized (this.mStanzaQueue) {
1064 final EnablePacket enable = new EnablePacket(smVersion);
1065 tagWriter.writeStanzaAsync(enable);
1066 stanzasSent = 0;
1067 mStanzaQueue.clear();
1068 }
1069 }
1070 features.carbonsEnabled = false;
1071 features.blockListRequested = false;
1072 synchronized (this.disco) {
1073 this.disco.clear();
1074 }
1075 mPendingServiceDiscoveries.set(0);
1076 mWaitForDisco.set(mServerIdentity != Identity.NIMBUZZ && smVersion != 0);
1077 lastDiscoStarted = SystemClock.elapsedRealtime();
1078 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": starting service discovery");
1079 mXmppConnectionService.scheduleWakeUpCall(Config.CONNECT_DISCO_TIMEOUT, account.getUuid().hashCode());
1080 Element caps = streamFeatures.findChild("c");
1081 final String hash = caps == null ? null : caps.getAttribute("hash");
1082 final String ver = caps == null ? null : caps.getAttribute("ver");
1083 ServiceDiscoveryResult discoveryResult = null;
1084 if (hash != null && ver != null) {
1085 discoveryResult = mXmppConnectionService.getCachedServiceDiscoveryResult(new Pair<>(hash, ver));
1086 }
1087 if (discoveryResult == null) {
1088 sendServiceDiscoveryInfo(account.getServer());
1089 } else {
1090 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": server caps came from cache");
1091 disco.put(account.getServer(), discoveryResult);
1092 }
1093 sendServiceDiscoveryInfo(account.getJid().toBareJid());
1094 sendServiceDiscoveryItems(account.getServer());
1095
1096 if (!mWaitForDisco.get()) {
1097 finalizeBind();
1098 }
1099 this.lastSessionStarted = SystemClock.elapsedRealtime();
1100 }
1101
1102 private void sendServiceDiscoveryInfo(final Jid jid) {
1103 mPendingServiceDiscoveries.incrementAndGet();
1104 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1105 iq.setTo(jid);
1106 iq.query("http://jabber.org/protocol/disco#info");
1107 this.sendIqPacket(iq, new OnIqPacketReceived() {
1108
1109 @Override
1110 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1111 if (packet.getType() == IqPacket.TYPE.RESULT) {
1112 boolean advancedStreamFeaturesLoaded;
1113 synchronized (XmppConnection.this.disco) {
1114 ServiceDiscoveryResult result = new ServiceDiscoveryResult(packet);
1115 for (final ServiceDiscoveryResult.Identity id : result.getIdentities()) {
1116 if (mServerIdentity == Identity.UNKNOWN && id.getType().equals("im") &&
1117 id.getCategory().equals("server") && id.getName() != null &&
1118 jid.equals(account.getServer())) {
1119 switch (id.getName()) {
1120 case "Prosody":
1121 mServerIdentity = Identity.PROSODY;
1122 break;
1123 case "ejabberd":
1124 mServerIdentity = Identity.EJABBERD;
1125 break;
1126 case "Slack-XMPP":
1127 mServerIdentity = Identity.SLACK;
1128 break;
1129 }
1130 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": server name: " + id.getName());
1131 }
1132 }
1133 if (jid.equals(account.getServer())) {
1134 mXmppConnectionService.databaseBackend.insertDiscoveryResult(result);
1135 }
1136 disco.put(jid, result);
1137 advancedStreamFeaturesLoaded = disco.containsKey(account.getServer())
1138 && disco.containsKey(account.getJid().toBareJid());
1139 }
1140 if (advancedStreamFeaturesLoaded && (jid.equals(account.getServer()) || jid.equals(account.getJid().toBareJid()))) {
1141 enableAdvancedStreamFeatures();
1142 }
1143 } else {
1144 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not query disco info for " + jid.toString());
1145 }
1146 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1147 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1148 && mWaitForDisco.compareAndSet(true, false)) {
1149 finalizeBind();
1150 }
1151 }
1152 }
1153 });
1154 }
1155
1156 private void finalizeBind() {
1157 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": online with resource " + account.getResource());
1158 if (bindListener != null) {
1159 bindListener.onBind(account);
1160 }
1161 changeStatus(Account.State.ONLINE);
1162 }
1163
1164 private void enableAdvancedStreamFeatures() {
1165 if (getFeatures().carbons() && !features.carbonsEnabled) {
1166 sendEnableCarbons();
1167 }
1168 if (getFeatures().blocking() && !features.blockListRequested) {
1169 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": Requesting block list");
1170 this.sendIqPacket(getIqGenerator().generateGetBlockList(), mXmppConnectionService.getIqParser());
1171 }
1172 for (final OnAdvancedStreamFeaturesLoaded listener : advancedStreamFeaturesLoadedListeners) {
1173 listener.onAdvancedStreamFeaturesAvailable(account);
1174 }
1175 }
1176
1177 private void sendServiceDiscoveryItems(final Jid server) {
1178 mPendingServiceDiscoveries.incrementAndGet();
1179 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1180 iq.setTo(server.toDomainJid());
1181 iq.query("http://jabber.org/protocol/disco#items");
1182 this.sendIqPacket(iq, new OnIqPacketReceived() {
1183
1184 @Override
1185 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1186 if (packet.getType() == IqPacket.TYPE.RESULT) {
1187 final List<Element> elements = packet.query().getChildren();
1188 for (final Element element : elements) {
1189 if (element.getName().equals("item")) {
1190 final Jid jid = element.getAttributeAsJid("jid");
1191 if (jid != null && !jid.equals(account.getServer())) {
1192 sendServiceDiscoveryInfo(jid);
1193 }
1194 }
1195 }
1196 } else {
1197 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not query disco items of " + server);
1198 }
1199 if (packet.getType() != IqPacket.TYPE.TIMEOUT) {
1200 if (mPendingServiceDiscoveries.decrementAndGet() == 0
1201 && mWaitForDisco.compareAndSet(true, false)) {
1202 finalizeBind();
1203 }
1204 }
1205 }
1206 });
1207 }
1208
1209 private void sendEnableCarbons() {
1210 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
1211 iq.addChild("enable", "urn:xmpp:carbons:2");
1212 this.sendIqPacket(iq, new OnIqPacketReceived() {
1213
1214 @Override
1215 public void onIqPacketReceived(final Account account, final IqPacket packet) {
1216 if (!packet.hasChild("error")) {
1217 Log.d(Config.LOGTAG, account.getJid().toBareJid()
1218 + ": successfully enabled carbons");
1219 features.carbonsEnabled = true;
1220 } else {
1221 Log.d(Config.LOGTAG, account.getJid().toBareJid()
1222 + ": error enableing carbons " + packet.toString());
1223 }
1224 }
1225 });
1226 }
1227
1228 private void processStreamError(final Tag currentTag)
1229 throws XmlPullParserException, IOException {
1230 final Element streamError = tagReader.readElement(currentTag);
1231 if (streamError == null) {
1232 return;
1233 }
1234 if (streamError.hasChild("conflict")) {
1235 final String resource = account.getResource().split("\\.")[0];
1236 account.setResource(resource + "." + nextRandomId());
1237 Log.d(Config.LOGTAG,
1238 account.getJid().toBareJid() + ": switching resource due to conflict ("
1239 + account.getResource() + ")");
1240 throw new IOException();
1241 } else if (streamError.hasChild("host-unknown")) {
1242 throw new StreamErrorHostUnknown();
1243 } else if (streamError.hasChild("policy-violation")) {
1244 throw new StreamErrorPolicyViolation();
1245 } else {
1246 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": stream error "+streamError.toString());
1247 throw new StreamError();
1248 }
1249 }
1250
1251 private void sendStartStream() throws IOException {
1252 final Tag stream = Tag.start("stream:stream");
1253 stream.setAttribute("to", account.getServer().toString());
1254 stream.setAttribute("version", "1.0");
1255 stream.setAttribute("xml:lang", "en");
1256 stream.setAttribute("xmlns", "jabber:client");
1257 stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
1258 tagWriter.writeTag(stream);
1259 }
1260
1261 private String nextRandomId() {
1262 return new BigInteger(50, mXmppConnectionService.getRNG()).toString(32);
1263 }
1264
1265 public String sendIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1266 packet.setFrom(account.getJid());
1267 return this.sendUnmodifiedIqPacket(packet, callback);
1268 }
1269
1270 public synchronized String sendUnmodifiedIqPacket(final IqPacket packet, final OnIqPacketReceived callback) {
1271 if (packet.getId() == null) {
1272 final String id = nextRandomId();
1273 packet.setAttribute("id", id);
1274 }
1275 if (callback != null) {
1276 synchronized (this.packetCallbacks) {
1277 packetCallbacks.put(packet.getId(), new Pair<>(packet, callback));
1278 }
1279 }
1280 this.sendPacket(packet);
1281 return packet.getId();
1282 }
1283
1284 public void sendMessagePacket(final MessagePacket packet) {
1285 this.sendPacket(packet);
1286 }
1287
1288 public void sendPresencePacket(final PresencePacket packet) {
1289 this.sendPacket(packet);
1290 }
1291
1292 private synchronized void sendPacket(final AbstractStanza packet) {
1293 if (stanzasSent == Integer.MAX_VALUE) {
1294 resetStreamId();
1295 disconnect(true);
1296 return;
1297 }
1298 synchronized (this.mStanzaQueue) {
1299 tagWriter.writeStanzaAsync(packet);
1300 if (packet instanceof AbstractAcknowledgeableStanza) {
1301 AbstractAcknowledgeableStanza stanza = (AbstractAcknowledgeableStanza) packet;
1302 ++stanzasSent;
1303 this.mStanzaQueue.append(stanzasSent, stanza);
1304 if (stanza instanceof MessagePacket && stanza.getId() != null && getFeatures().sm()) {
1305 if (Config.EXTENDED_SM_LOGGING) {
1306 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": requesting ack for message stanza #" + stanzasSent);
1307 }
1308 tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
1309 }
1310 }
1311 }
1312 }
1313
1314 public void sendPing() {
1315 if (!r()) {
1316 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
1317 iq.setFrom(account.getJid());
1318 iq.addChild("ping", "urn:xmpp:ping");
1319 this.sendIqPacket(iq, null);
1320 }
1321 this.lastPingSent = SystemClock.elapsedRealtime();
1322 }
1323
1324 public void setOnMessagePacketReceivedListener(
1325 final OnMessagePacketReceived listener) {
1326 this.messageListener = listener;
1327 }
1328
1329 public void setOnUnregisteredIqPacketReceivedListener(
1330 final OnIqPacketReceived listener) {
1331 this.unregisteredIqListener = listener;
1332 }
1333
1334 public void setOnPresencePacketReceivedListener(
1335 final OnPresencePacketReceived listener) {
1336 this.presenceListener = listener;
1337 }
1338
1339 public void setOnJinglePacketReceivedListener(
1340 final OnJinglePacketReceived listener) {
1341 this.jingleListener = listener;
1342 }
1343
1344 public void setOnStatusChangedListener(final OnStatusChanged listener) {
1345 this.statusListener = listener;
1346 }
1347
1348 public void setOnBindListener(final OnBindListener listener) {
1349 this.bindListener = listener;
1350 }
1351
1352 public void setOnMessageAcknowledgeListener(final OnMessageAcknowledged listener) {
1353 this.acknowledgedListener = listener;
1354 }
1355
1356 public void addOnAdvancedStreamFeaturesAvailableListener(final OnAdvancedStreamFeaturesLoaded listener) {
1357 if (!this.advancedStreamFeaturesLoadedListeners.contains(listener)) {
1358 this.advancedStreamFeaturesLoadedListeners.add(listener);
1359 }
1360 }
1361
1362 public void waitForPush() {
1363 if (tagWriter.isActive()) {
1364 tagWriter.finish();
1365 new Thread(new Runnable() {
1366 @Override
1367 public void run() {
1368 try {
1369 while(!tagWriter.finished()) {
1370 Thread.sleep(10);
1371 }
1372 socket.close();
1373 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": closed tcp without closing stream");
1374 changeStatus(Account.State.OFFLINE);
1375 } catch (IOException | InterruptedException e) {
1376 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": error while closing socket for waitForPush()");
1377 }
1378 }
1379 }).start();
1380 } else {
1381 forceCloseSocket();
1382 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": closed tcp without closing stream (no waiting)");
1383 }
1384 }
1385
1386 private void forceCloseSocket() {
1387 if (socket != null) {
1388 try {
1389 socket.close();
1390 } catch (IOException e) {
1391 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": io exception "+e.getMessage()+" during force close");
1392 }
1393 } else {
1394 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": socket was null during force close");
1395 }
1396 }
1397
1398 public void interrupt() {
1399 Thread.currentThread().interrupt();
1400 }
1401
1402 public void disconnect(final boolean force) {
1403 interrupt();
1404 Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": disconnecting force="+Boolean.valueOf(force));
1405 if (force) {
1406 tagWriter.forceClose();
1407 forceCloseSocket();
1408 } else {
1409 if (tagWriter.isActive()) {
1410 tagWriter.finish();
1411 try {
1412 int i = 0;
1413 boolean warned = false;
1414 while (!tagWriter.finished() && socket.isConnected() && i <= 10) {
1415 if (!warned) {
1416 Log.d(Config.LOGTAG, account.getJid().toBareJid()+": waiting for tag writer to finish");
1417 warned = true;
1418 }
1419 try {
1420 Thread.sleep(200);
1421 } catch(InterruptedException e) {
1422 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": sleep interrupted");
1423 }
1424 i++;
1425 }
1426 if (warned) {
1427 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": tag writer has finished");
1428 }
1429 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": closing stream");
1430 tagWriter.writeTag(Tag.end("stream:stream"));
1431 } catch (final IOException e) {
1432 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": io exception during disconnect ("+e.getMessage()+")");
1433 } finally {
1434 forceCloseSocket();
1435 }
1436 }
1437 }
1438 }
1439
1440 public void resetStreamId() {
1441 this.streamId = null;
1442 }
1443
1444 private List<Entry<Jid, ServiceDiscoveryResult>> findDiscoItemsByFeature(final String feature) {
1445 synchronized (this.disco) {
1446 final List<Entry<Jid, ServiceDiscoveryResult>> items = new ArrayList<>();
1447 for (final Entry<Jid, ServiceDiscoveryResult> cursor : this.disco.entrySet()) {
1448 if (cursor.getValue().getFeatures().contains(feature)) {
1449 items.add(cursor);
1450 }
1451 }
1452 return items;
1453 }
1454 }
1455
1456 public Jid findDiscoItemByFeature(final String feature) {
1457 final List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(feature);
1458 if (items.size() >= 1) {
1459 return items.get(0).getKey();
1460 }
1461 return null;
1462 }
1463
1464 public boolean r() {
1465 if (getFeatures().sm()) {
1466 this.tagWriter.writeStanzaAsync(new RequestPacket(smVersion));
1467 return true;
1468 } else {
1469 return false;
1470 }
1471 }
1472
1473 public String getMucServer() {
1474 synchronized (this.disco) {
1475 for (final Entry<Jid, ServiceDiscoveryResult> cursor : disco.entrySet()) {
1476 final ServiceDiscoveryResult value = cursor.getValue();
1477 if (value.getFeatures().contains("http://jabber.org/protocol/muc")
1478 && !value.getFeatures().contains("jabber:iq:gateway")
1479 && !value.hasIdentity("conference", "irc")) {
1480 return cursor.getKey().toString();
1481 }
1482 }
1483 }
1484 return null;
1485 }
1486
1487 public int getTimeToNextAttempt() {
1488 final int interval = Math.min((int) (25 * Math.pow(1.3, attempt)), 300);
1489 final int secondsSinceLast = (int) ((SystemClock.elapsedRealtime() - this.lastConnect) / 1000);
1490 return interval - secondsSinceLast;
1491 }
1492
1493 public int getAttempt() {
1494 return this.attempt;
1495 }
1496
1497 public Features getFeatures() {
1498 return this.features;
1499 }
1500
1501 public long getLastSessionEstablished() {
1502 final long diff = SystemClock.elapsedRealtime() - this.lastSessionStarted;
1503 return System.currentTimeMillis() - diff;
1504 }
1505
1506 public long getLastConnect() {
1507 return this.lastConnect;
1508 }
1509
1510 public long getLastPingSent() {
1511 return this.lastPingSent;
1512 }
1513
1514 public long getLastDiscoStarted() {
1515 return this.lastDiscoStarted;
1516 }
1517 public long getLastPacketReceived() {
1518 return this.lastPacketReceived;
1519 }
1520
1521 public void sendActive() {
1522 this.sendPacket(new ActivePacket());
1523 }
1524
1525 public void sendInactive() {
1526 this.sendPacket(new InactivePacket());
1527 }
1528
1529 public void resetAttemptCount(boolean resetConnectTime) {
1530 this.attempt = 0;
1531 if (resetConnectTime) {
1532 this.lastConnect = 0;
1533 }
1534 }
1535
1536 public void setInteractive(boolean interactive) {
1537 this.mInteractive = interactive;
1538 }
1539
1540 public Identity getServerIdentity() {
1541 return mServerIdentity;
1542 }
1543
1544 private class UnauthorizedException extends IOException {
1545
1546 }
1547
1548 private class SecurityException extends IOException {
1549
1550 }
1551
1552 private class IncompatibleServerException extends IOException {
1553
1554 }
1555
1556 private class StreamErrorHostUnknown extends StreamError {
1557
1558 }
1559
1560 private class StreamErrorPolicyViolation extends StreamError {
1561
1562 }
1563
1564 private class StreamError extends IOException {
1565
1566 }
1567
1568 private class PaymentRequiredException extends IOException {
1569
1570 }
1571
1572 public enum Identity {
1573 FACEBOOK,
1574 SLACK,
1575 EJABBERD,
1576 PROSODY,
1577 NIMBUZZ,
1578 UNKNOWN
1579 }
1580
1581 public class Features {
1582 XmppConnection connection;
1583 private boolean carbonsEnabled = false;
1584 private boolean encryptionEnabled = false;
1585 private boolean blockListRequested = false;
1586
1587 public Features(final XmppConnection connection) {
1588 this.connection = connection;
1589 }
1590
1591 private boolean hasDiscoFeature(final Jid server, final String feature) {
1592 synchronized (XmppConnection.this.disco) {
1593 return connection.disco.containsKey(server) &&
1594 connection.disco.get(server).getFeatures().contains(feature);
1595 }
1596 }
1597
1598 public boolean carbons() {
1599 return hasDiscoFeature(account.getServer(), "urn:xmpp:carbons:2");
1600 }
1601
1602 public boolean blocking() {
1603 return hasDiscoFeature(account.getServer(), Xmlns.BLOCKING);
1604 }
1605
1606 public boolean spamReporting() {
1607 return hasDiscoFeature(account.getServer(), "urn:xmpp:reporting:reason:spam:0");
1608 }
1609
1610 public boolean register() {
1611 return hasDiscoFeature(account.getServer(), Xmlns.REGISTER);
1612 }
1613
1614 public boolean sm() {
1615 return streamId != null
1616 || (connection.streamFeatures != null && connection.streamFeatures.hasChild("sm"));
1617 }
1618
1619 public boolean csi() {
1620 return connection.streamFeatures != null && connection.streamFeatures.hasChild("csi", "urn:xmpp:csi:0");
1621 }
1622
1623 public boolean pep() {
1624 synchronized (XmppConnection.this.disco) {
1625 ServiceDiscoveryResult info = disco.get(account.getJid().toBareJid());
1626 return info != null && info.hasIdentity("pubsub", "pep");
1627 }
1628 }
1629
1630 public boolean pepPersistent() {
1631 synchronized (XmppConnection.this.disco) {
1632 ServiceDiscoveryResult info = disco.get(account.getJid().toBareJid());
1633 return info != null && info.getFeatures().contains("http://jabber.org/protocol/pubsub#persistent-items");
1634 }
1635 }
1636
1637 public boolean mam() {
1638 return hasDiscoFeature(account.getJid().toBareJid(), "urn:xmpp:mam:0")
1639 || hasDiscoFeature(account.getServer(), "urn:xmpp:mam:0");
1640 }
1641
1642 public boolean push() {
1643 return hasDiscoFeature(account.getJid().toBareJid(), "urn:xmpp:push:0")
1644 || hasDiscoFeature(account.getServer(), "urn:xmpp:push:0");
1645 }
1646
1647 public boolean rosterVersioning() {
1648 return connection.streamFeatures != null && connection.streamFeatures.hasChild("ver");
1649 }
1650
1651 public void setBlockListRequested(boolean value) {
1652 this.blockListRequested = value;
1653 }
1654
1655 public boolean httpUpload(long filesize) {
1656 if (Config.DISABLE_HTTP_UPLOAD) {
1657 return false;
1658 } else {
1659 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(Xmlns.HTTP_UPLOAD);
1660 if (items.size() > 0) {
1661 try {
1662 long maxsize = Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(Xmlns.HTTP_UPLOAD, "max-file-size"));
1663 if(filesize <= maxsize) {
1664 return true;
1665 } else {
1666 Log.d(Config.LOGTAG,account.getJid().toBareJid()+": http upload is not available for files with size "+filesize+" (max is "+maxsize+")");
1667 return false;
1668 }
1669 } catch (Exception e) {
1670 return true;
1671 }
1672 } else {
1673 return false;
1674 }
1675 }
1676 }
1677
1678 public long getMaxHttpUploadSize() {
1679 List<Entry<Jid, ServiceDiscoveryResult>> items = findDiscoItemsByFeature(Xmlns.HTTP_UPLOAD);
1680 if (items.size() > 0) {
1681 try {
1682 return Long.parseLong(items.get(0).getValue().getExtendedDiscoInformation(Xmlns.HTTP_UPLOAD, "max-file-size"));
1683 } catch (Exception e) {
1684 return -1;
1685 }
1686 } else {
1687 return -1;
1688 }
1689 }
1690
1691 public boolean stanzaIds() {
1692 return hasDiscoFeature(account.getJid().toBareJid(),Xmlns.STANZA_IDS);
1693 }
1694 }
1695
1696 private IqGenerator getIqGenerator() {
1697 return mXmppConnectionService.getIqGenerator();
1698 }
1699}