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