1package eu.siacs.conversations.parser;
2
3import android.util.Log;
4
5import net.java.otr4j.session.Session;
6import net.java.otr4j.session.SessionStatus;
7
8import eu.siacs.conversations.Config;
9import eu.siacs.conversations.entities.Account;
10import eu.siacs.conversations.entities.Contact;
11import eu.siacs.conversations.entities.Conversation;
12import eu.siacs.conversations.entities.Message;
13import eu.siacs.conversations.entities.MucOptions;
14import eu.siacs.conversations.http.HttpConnectionManager;
15import eu.siacs.conversations.services.MessageArchiveService;
16import eu.siacs.conversations.services.XmppConnectionService;
17import eu.siacs.conversations.utils.CryptoHelper;
18import eu.siacs.conversations.xml.Element;
19import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
20import eu.siacs.conversations.xmpp.chatstate.ChatState;
21import eu.siacs.conversations.xmpp.jid.Jid;
22import eu.siacs.conversations.xmpp.pep.Avatar;
23import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
24
25public class MessageParser extends AbstractParser implements
26 OnMessagePacketReceived {
27 public MessageParser(XmppConnectionService service) {
28 super(service);
29 }
30
31 private boolean extractChatState(Conversation conversation, final Element element) {
32 ChatState state = ChatState.parse(element);
33 if (state != null && conversation != null) {
34 final Account account = conversation.getAccount();
35 Jid from = element.getAttributeAsJid("from");
36 if (from != null && from.toBareJid().equals(account.getJid().toBareJid())) {
37 conversation.setOutgoingChatState(state);
38 return false;
39 } else {
40 return conversation.setIncomingChatState(state);
41 }
42 }
43 return false;
44 }
45
46 private Message parseChat(MessagePacket packet, Account account) {
47 final Jid jid = packet.getFrom();
48 if (jid == null) {
49 return null;
50 }
51 Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, jid.toBareJid(), false);
52 updateLastseen(packet, account, true);
53 String pgpBody = getPgpBody(packet);
54 Message finishedMessage;
55 if (pgpBody != null) {
56 finishedMessage = new Message(conversation,
57 pgpBody, Message.ENCRYPTION_PGP, Message.STATUS_RECEIVED);
58 } else {
59 finishedMessage = new Message(conversation,
60 packet.getBody(), Message.ENCRYPTION_NONE,
61 Message.STATUS_RECEIVED);
62 }
63 finishedMessage.setRemoteMsgId(packet.getId());
64 finishedMessage.markable = isMarkable(packet);
65 if (conversation.getMode() == Conversation.MODE_MULTI
66 && !jid.isBareJid()) {
67 finishedMessage.setType(Message.TYPE_PRIVATE);
68 finishedMessage.setTrueCounterpart(conversation.getMucOptions()
69 .getTrueCounterpart(jid.getResourcepart()));
70 if (conversation.hasDuplicateMessage(finishedMessage)) {
71 return null;
72 }
73
74 }
75 finishedMessage.setCounterpart(jid);
76 finishedMessage.setTime(getTimestamp(packet));
77 extractChatState(conversation,packet);
78 return finishedMessage;
79 }
80
81 private Message parseOtrChat(MessagePacket packet, Account account) {
82 final Jid to = packet.getTo();
83 final Jid from = packet.getFrom();
84 if (to == null || from == null) {
85 return null;
86 }
87 boolean properlyAddressed = !to.isBareJid() || account.countPresences() == 1;
88 Conversation conversation = mXmppConnectionService
89 .findOrCreateConversation(account, from.toBareJid(), false);
90 String presence;
91 if (from.isBareJid()) {
92 presence = "";
93 } else {
94 presence = from.getResourcepart();
95 }
96 updateLastseen(packet, account, true);
97 String body = packet.getBody();
98 if (body.matches("^\\?OTRv\\d{1,2}\\?.*")) {
99 conversation.endOtrIfNeeded();
100 }
101 if (!conversation.hasValidOtrSession()) {
102 if (properlyAddressed) {
103 conversation.startOtrSession(presence,false);
104 } else {
105 return null;
106 }
107 } else {
108 String foreignPresence = conversation.getOtrSession()
109 .getSessionID().getUserID();
110 if (!foreignPresence.equals(presence)) {
111 conversation.endOtrIfNeeded();
112 if (properlyAddressed) {
113 conversation.startOtrSession(presence, false);
114 } else {
115 return null;
116 }
117 }
118 }
119 try {
120 Session otrSession = conversation.getOtrSession();
121 SessionStatus before = otrSession.getSessionStatus();
122 body = otrSession.transformReceiving(body);
123 SessionStatus after = otrSession.getSessionStatus();
124 if ((before != after) && (after == SessionStatus.ENCRYPTED)) {
125 conversation.setNextEncryption(Message.ENCRYPTION_OTR);
126 mXmppConnectionService.onOtrSessionEstablished(conversation);
127 } else if ((before != after) && (after == SessionStatus.FINISHED)) {
128 conversation.setNextEncryption(Message.ENCRYPTION_NONE);
129 conversation.resetOtrSession();
130 mXmppConnectionService.updateConversationUi();
131 }
132 if ((body == null) || (body.isEmpty())) {
133 return null;
134 }
135 if (body.startsWith(CryptoHelper.FILETRANSFER)) {
136 String key = body.substring(CryptoHelper.FILETRANSFER.length());
137 conversation.setSymmetricKey(CryptoHelper.hexToBytes(key));
138 return null;
139 }
140 Message finishedMessage = new Message(conversation, body, Message.ENCRYPTION_OTR,
141 Message.STATUS_RECEIVED);
142 finishedMessage.setTime(getTimestamp(packet));
143 finishedMessage.setRemoteMsgId(packet.getId());
144 finishedMessage.markable = isMarkable(packet);
145 finishedMessage.setCounterpart(from);
146 extractChatState(conversation,packet);
147 return finishedMessage;
148 } catch (Exception e) {
149 conversation.resetOtrSession();
150 return null;
151 }
152 }
153
154 private Message parseGroupchat(MessagePacket packet, Account account) {
155 int status;
156 final Jid from = packet.getFrom();
157 if (from == null) {
158 return null;
159 }
160 if (mXmppConnectionService.find(account.pendingConferenceLeaves,
161 account, from.toBareJid()) != null) {
162 return null;
163 }
164 Conversation conversation = mXmppConnectionService
165 .findOrCreateConversation(account, from.toBareJid(), true);
166 if (packet.hasChild("subject")) {
167 conversation.setHasMessagesLeftOnServer(true);
168 conversation.getMucOptions().setSubject(packet.findChild("subject").getContent());
169 mXmppConnectionService.updateConversationUi();
170 return null;
171 }
172
173 final Element x = packet.findChild("x", "http://jabber.org/protocol/muc#user");
174 if (from.isBareJid() && (x == null || !x.hasChild("status"))) {
175 return null;
176 } else if (from.isBareJid() && x.hasChild("status")) {
177 for(Element child : x.getChildren()) {
178 if (child.getName().equals("status")) {
179 String code = child.getAttribute("code");
180 if (code.contains(MucOptions.STATUS_CODE_ROOM_CONFIG_CHANGED)) {
181 mXmppConnectionService.fetchConferenceConfiguration(conversation);
182 }
183 }
184 }
185 return null;
186 }
187
188 if (from.getResourcepart().equals(conversation.getMucOptions().getActualNick())) {
189 if (mXmppConnectionService.markMessage(conversation,
190 packet.getId(), Message.STATUS_SEND_RECEIVED)) {
191 return null;
192 } else if (packet.getId() == null) {
193 Message message = conversation.findSentMessageWithBody(packet.getBody());
194 if (message != null) {
195 mXmppConnectionService.markMessage(message,Message.STATUS_SEND_RECEIVED);
196 return null;
197 } else {
198 status = Message.STATUS_SEND;
199 }
200 } else {
201 status = Message.STATUS_SEND;
202 }
203 } else {
204 status = Message.STATUS_RECEIVED;
205 }
206 String pgpBody = getPgpBody(packet);
207 Message finishedMessage;
208 if (pgpBody == null) {
209 finishedMessage = new Message(conversation,
210 packet.getBody(), Message.ENCRYPTION_NONE, status);
211 } else {
212 finishedMessage = new Message(conversation, pgpBody,
213 Message.ENCRYPTION_PGP, status);
214 }
215 finishedMessage.setRemoteMsgId(packet.getId());
216 finishedMessage.markable = isMarkable(packet);
217 finishedMessage.setCounterpart(from);
218 if (status == Message.STATUS_RECEIVED) {
219 finishedMessage.setTrueCounterpart(conversation.getMucOptions()
220 .getTrueCounterpart(from.getResourcepart()));
221 }
222 if (packet.hasChild("delay")
223 && conversation.hasDuplicateMessage(finishedMessage)) {
224 return null;
225 }
226 finishedMessage.setTime(getTimestamp(packet));
227 return finishedMessage;
228 }
229
230 private Message parseCarbonMessage(final MessagePacket packet, final Account account) {
231 int status;
232 final Jid fullJid;
233 Element forwarded;
234 if (packet.hasChild("received", "urn:xmpp:carbons:2")) {
235 forwarded = packet.findChild("received", "urn:xmpp:carbons:2")
236 .findChild("forwarded", "urn:xmpp:forward:0");
237 status = Message.STATUS_RECEIVED;
238 } else if (packet.hasChild("sent", "urn:xmpp:carbons:2")) {
239 forwarded = packet.findChild("sent", "urn:xmpp:carbons:2")
240 .findChild("forwarded", "urn:xmpp:forward:0");
241 status = Message.STATUS_SEND;
242 } else {
243 return null;
244 }
245 if (forwarded == null) {
246 return null;
247 }
248 Element message = forwarded.findChild("message");
249 if (message == null) {
250 return null;
251 }
252 if (!message.hasChild("body")) {
253 if (status == Message.STATUS_RECEIVED
254 && message.getAttribute("from") != null) {
255 parseNonMessage(message, account);
256 } else if (status == Message.STATUS_SEND
257 && message.hasChild("displayed", "urn:xmpp:chat-markers:0")) {
258 final Jid to = message.getAttributeAsJid("to");
259 if (to != null) {
260 final Conversation conversation = mXmppConnectionService.find(
261 mXmppConnectionService.getConversations(), account,
262 to.toBareJid());
263 if (conversation != null) {
264 mXmppConnectionService.markRead(conversation);
265 }
266 }
267 }
268 return null;
269 }
270 if (status == Message.STATUS_RECEIVED) {
271 fullJid = message.getAttributeAsJid("from");
272 if (fullJid == null) {
273 return null;
274 } else {
275 updateLastseen(message, account, true);
276 }
277 } else {
278 fullJid = message.getAttributeAsJid("to");
279 if (fullJid == null) {
280 return null;
281 }
282 }
283 if (message.hasChild("x","http://jabber.org/protocol/muc#user")
284 && "chat".equals(message.getAttribute("type"))) {
285 return null;
286 }
287 Conversation conversation = mXmppConnectionService
288 .findOrCreateConversation(account, fullJid.toBareJid(), false);
289 String pgpBody = getPgpBody(message);
290 Message finishedMessage;
291 if (pgpBody != null) {
292 finishedMessage = new Message(conversation, pgpBody,
293 Message.ENCRYPTION_PGP, status);
294 } else {
295 String body = message.findChild("body").getContent();
296 finishedMessage = new Message(conversation, body,
297 Message.ENCRYPTION_NONE, status);
298 }
299 extractChatState(conversation,message);
300 finishedMessage.setTime(getTimestamp(message));
301 finishedMessage.setRemoteMsgId(message.getAttribute("id"));
302 finishedMessage.markable = isMarkable(message);
303 finishedMessage.setCounterpart(fullJid);
304 if (conversation.getMode() == Conversation.MODE_MULTI
305 && !fullJid.isBareJid()) {
306 finishedMessage.setType(Message.TYPE_PRIVATE);
307 finishedMessage.setTrueCounterpart(conversation.getMucOptions()
308 .getTrueCounterpart(fullJid.getResourcepart()));
309 if (conversation.hasDuplicateMessage(finishedMessage)) {
310 return null;
311 }
312 }
313 return finishedMessage;
314 }
315
316 private Message parseMamMessage(MessagePacket packet, final Account account) {
317 final Element result = packet.findChild("result","urn:xmpp:mam:0");
318 if (result == null ) {
319 return null;
320 }
321 final MessageArchiveService.Query query = this.mXmppConnectionService.getMessageArchiveService().findQuery(result.getAttribute("queryid"));
322 if (query!=null) {
323 query.incrementTotalCount();
324 }
325 final Element forwarded = result.findChild("forwarded","urn:xmpp:forward:0");
326 if (forwarded == null) {
327 return null;
328 }
329 final Element message = forwarded.findChild("message");
330 if (message == null) {
331 return null;
332 }
333 final Element body = message.findChild("body");
334 if (body == null || message.hasChild("private","urn:xmpp:carbons:2") || message.hasChild("no-copy","urn:xmpp:hints")) {
335 return null;
336 }
337 int encryption;
338 String content = getPgpBody(message);
339 if (content != null) {
340 encryption = Message.ENCRYPTION_PGP;
341 } else {
342 encryption = Message.ENCRYPTION_NONE;
343 content = body.getContent();
344 }
345 if (content == null) {
346 return null;
347 }
348 final long timestamp = getTimestamp(forwarded);
349 final Jid to = message.getAttributeAsJid("to");
350 final Jid from = message.getAttributeAsJid("from");
351 Jid counterpart;
352 int status;
353 Conversation conversation;
354 if (from!=null && to != null && from.toBareJid().equals(account.getJid().toBareJid())) {
355 status = Message.STATUS_SEND;
356 conversation = this.mXmppConnectionService.findOrCreateConversation(account,to.toBareJid(),false,query);
357 counterpart = to;
358 } else if (from !=null && to != null) {
359 status = Message.STATUS_RECEIVED;
360 conversation = this.mXmppConnectionService.findOrCreateConversation(account,from.toBareJid(),false,query);
361 counterpart = from;
362 } else {
363 return null;
364 }
365 Message finishedMessage = new Message(conversation,content,encryption,status);
366 finishedMessage.setTime(timestamp);
367 finishedMessage.setCounterpart(counterpart);
368 finishedMessage.setRemoteMsgId(message.getAttribute("id"));
369 finishedMessage.setServerMsgId(result.getAttribute("id"));
370 if (conversation.hasDuplicateMessage(finishedMessage)) {
371 return null;
372 }
373 if (query!=null) {
374 query.incrementMessageCount();
375 }
376 return finishedMessage;
377 }
378
379 private void parseError(final MessagePacket packet, final Account account) {
380 final Jid from = packet.getFrom();
381 mXmppConnectionService.markMessage(account, from.toBareJid(),
382 packet.getId(), Message.STATUS_SEND_FAILED);
383 }
384
385 private void parseNonMessage(Element packet, Account account) {
386 final Jid from = packet.getAttributeAsJid("from");
387 if (extractChatState(from == null ? null : mXmppConnectionService.find(account,from), packet)) {
388 mXmppConnectionService.updateConversationUi();
389 }
390 Element invite = extractInvite(packet);
391 if (invite != null) {
392 Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, from, true);
393 if (!conversation.getMucOptions().online()) {
394 Element password = invite.findChild("password");
395 conversation.getMucOptions().setPassword(password == null ? null : password.getContent());
396 mXmppConnectionService.databaseBackend.updateConversation(conversation);
397 mXmppConnectionService.joinMuc(conversation);
398 mXmppConnectionService.updateConversationUi();
399 }
400 }
401 if (packet.hasChild("event", "http://jabber.org/protocol/pubsub#event")) {
402 Element event = packet.findChild("event",
403 "http://jabber.org/protocol/pubsub#event");
404 parseEvent(event, from, account);
405 } else if (from != null && packet.hasChild("displayed", "urn:xmpp:chat-markers:0")) {
406 String id = packet
407 .findChild("displayed", "urn:xmpp:chat-markers:0")
408 .getAttribute("id");
409 updateLastseen(packet, account, true);
410 final Message displayedMessage = mXmppConnectionService.markMessage(account, from.toBareJid(), id, Message.STATUS_SEND_DISPLAYED);
411 Message message = displayedMessage.prev();
412 while(message != null
413 && message.getStatus() == Message.STATUS_SEND_RECEIVED
414 && message.getTimeSent() < displayedMessage.getTimeSent()) {
415 mXmppConnectionService.markMessage(message,Message.STATUS_SEND_DISPLAYED);
416 message = message.prev();
417 }
418 } else if (from != null
419 && packet.hasChild("received", "urn:xmpp:chat-markers:0")) {
420 String id = packet.findChild("received", "urn:xmpp:chat-markers:0")
421 .getAttribute("id");
422 updateLastseen(packet, account, false);
423 mXmppConnectionService.markMessage(account, from.toBareJid(),
424 id, Message.STATUS_SEND_RECEIVED);
425 } else if (from != null
426 && packet.hasChild("received", "urn:xmpp:receipts")) {
427 String id = packet.findChild("received", "urn:xmpp:receipts")
428 .getAttribute("id");
429 updateLastseen(packet, account, false);
430 mXmppConnectionService.markMessage(account, from.toBareJid(),
431 id, Message.STATUS_SEND_RECEIVED);
432 }
433 }
434
435 private Element extractInvite(Element message) {
436 Element x = message.findChild("x","http://jabber.org/protocol/muc#user");
437 if (x == null) {
438 x = message.findChild("x","jabber:x:conference");
439 }
440 if (x != null && x.hasChild("invite")) {
441 return x;
442 } else {
443 return null;
444 }
445 }
446
447 private void parseEvent(final Element event, final Jid from, final Account account) {
448 Element items = event.findChild("items");
449 if (items == null) {
450 return;
451 }
452 String node = items.getAttribute("node");
453 if (node == null) {
454 return;
455 }
456 if (node.equals("urn:xmpp:avatar:metadata")) {
457 Avatar avatar = Avatar.parseMetadata(items);
458 if (avatar != null) {
459 avatar.owner = from;
460 if (mXmppConnectionService.getFileBackend().isAvatarCached(
461 avatar)) {
462 if (account.getJid().toBareJid().equals(from)) {
463 if (account.setAvatar(avatar.getFilename())) {
464 mXmppConnectionService.databaseBackend
465 .updateAccount(account);
466 }
467 mXmppConnectionService.getAvatarService().clear(
468 account);
469 mXmppConnectionService.updateConversationUi();
470 mXmppConnectionService.updateAccountUi();
471 } else {
472 Contact contact = account.getRoster().getContact(
473 from);
474 contact.setAvatar(avatar.getFilename());
475 mXmppConnectionService.getAvatarService().clear(
476 contact);
477 mXmppConnectionService.updateConversationUi();
478 mXmppConnectionService.updateRosterUi();
479 }
480 } else {
481 mXmppConnectionService.fetchAvatar(account, avatar);
482 }
483 }
484 } else if (node.equals("http://jabber.org/protocol/nick")) {
485 Element item = items.findChild("item");
486 if (item != null) {
487 Element nick = item.findChild("nick",
488 "http://jabber.org/protocol/nick");
489 if (nick != null) {
490 if (from != null) {
491 Contact contact = account.getRoster().getContact(
492 from);
493 contact.setPresenceName(nick.getContent());
494 mXmppConnectionService.getAvatarService().clear(account);
495 mXmppConnectionService.updateConversationUi();
496 mXmppConnectionService.updateAccountUi();
497 }
498 }
499 }
500 }
501 }
502
503 private String getPgpBody(Element message) {
504 Element child = message.findChild("x", "jabber:x:encrypted");
505 if (child == null) {
506 return null;
507 } else {
508 return child.getContent();
509 }
510 }
511
512 private boolean isMarkable(Element message) {
513 return message.hasChild("markable", "urn:xmpp:chat-markers:0");
514 }
515
516 @Override
517 public void onMessagePacketReceived(Account account, MessagePacket packet) {
518 Message message = null;
519 this.parseNick(packet, account);
520 if ((packet.getType() == MessagePacket.TYPE_CHAT || packet.getType() == MessagePacket.TYPE_NORMAL)) {
521 if ((packet.getBody() != null)
522 && (packet.getBody().startsWith("?OTR"))) {
523 message = this.parseOtrChat(packet, account);
524 if (message != null) {
525 message.markUnread();
526 }
527 } else if (packet.hasChild("body") && extractInvite(packet) == null) {
528 message = this.parseChat(packet, account);
529 if (message != null) {
530 message.markUnread();
531 }
532 } else if (packet.hasChild("received", "urn:xmpp:carbons:2")
533 || (packet.hasChild("sent", "urn:xmpp:carbons:2"))) {
534 message = this.parseCarbonMessage(packet, account);
535 if (message != null) {
536 if (message.getStatus() == Message.STATUS_SEND) {
537 account.activateGracePeriod();
538 mXmppConnectionService.markRead(message.getConversation());
539 } else {
540 message.markUnread();
541 }
542 }
543 } else if (packet.hasChild("result","urn:xmpp:mam:0")) {
544 message = parseMamMessage(packet, account);
545 if (message != null) {
546 Conversation conversation = message.getConversation();
547 conversation.add(message);
548 mXmppConnectionService.databaseBackend.createMessage(message);
549 }
550 return;
551 } else if (packet.hasChild("fin","urn:xmpp:mam:0")) {
552 Element fin = packet.findChild("fin","urn:xmpp:mam:0");
553 mXmppConnectionService.getMessageArchiveService().processFin(fin);
554 } else {
555 parseNonMessage(packet, account);
556 }
557 } else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
558 message = this.parseGroupchat(packet, account);
559 if (message != null) {
560 if (message.getStatus() == Message.STATUS_RECEIVED) {
561 message.markUnread();
562 } else {
563 mXmppConnectionService.markRead(message.getConversation());
564 account.activateGracePeriod();
565 }
566 }
567 } else if (packet.getType() == MessagePacket.TYPE_ERROR) {
568 this.parseError(packet, account);
569 return;
570 } else if (packet.getType() == MessagePacket.TYPE_HEADLINE) {
571 this.parseHeadline(packet, account);
572 return;
573 }
574 if ((message == null) || (message.getBody() == null)) {
575 return;
576 }
577 if ((mXmppConnectionService.confirmMessages())
578 && ((packet.getId() != null))) {
579 if (packet.hasChild("markable", "urn:xmpp:chat-markers:0")) {
580 MessagePacket receipt = mXmppConnectionService
581 .getMessageGenerator().received(account, packet,
582 "urn:xmpp:chat-markers:0");
583 mXmppConnectionService.sendMessagePacket(account, receipt);
584 }
585 if (packet.hasChild("request", "urn:xmpp:receipts")) {
586 MessagePacket receipt = mXmppConnectionService
587 .getMessageGenerator().received(account, packet,
588 "urn:xmpp:receipts");
589 mXmppConnectionService.sendMessagePacket(account, receipt);
590 }
591 }
592 Conversation conversation = message.getConversation();
593 conversation.add(message);
594 if (account.getXmppConnection() != null && account.getXmppConnection().getFeatures().advancedStreamFeaturesLoaded()) {
595 if (conversation.setLastMessageTransmitted(System.currentTimeMillis())) {
596 mXmppConnectionService.updateConversation(conversation);
597 }
598 }
599
600 if (message.getStatus() == Message.STATUS_RECEIVED
601 && conversation.getOtrSession() != null
602 && !conversation.getOtrSession().getSessionID().getUserID()
603 .equals(message.getCounterpart().getResourcepart())) {
604 conversation.endOtrIfNeeded();
605 }
606
607 if (packet.getType() != MessagePacket.TYPE_ERROR) {
608 if (message.getEncryption() == Message.ENCRYPTION_NONE
609 || mXmppConnectionService.saveEncryptedMessages()) {
610 mXmppConnectionService.databaseBackend.createMessage(message);
611 }
612 }
613 final HttpConnectionManager manager = this.mXmppConnectionService.getHttpConnectionManager();
614 if (message.trusted() && message.bodyContainsDownloadable() && manager.getAutoAcceptFileSize() > 0) {
615 manager.createNewConnection(message);
616 } else if (!message.isRead()) {
617 mXmppConnectionService.getNotificationService().push(message);
618 }
619 mXmppConnectionService.updateConversationUi();
620 }
621
622 private void parseHeadline(MessagePacket packet, Account account) {
623 if (packet.hasChild("event", "http://jabber.org/protocol/pubsub#event")) {
624 Element event = packet.findChild("event",
625 "http://jabber.org/protocol/pubsub#event");
626 parseEvent(event, packet.getFrom(), account);
627 }
628 }
629
630 private void parseNick(MessagePacket packet, Account account) {
631 Element nick = packet.findChild("nick",
632 "http://jabber.org/protocol/nick");
633 if (nick != null) {
634 if (packet.getFrom() != null) {
635 Contact contact = account.getRoster().getContact(
636 packet.getFrom());
637 contact.setPresenceName(nick.getContent());
638 }
639 }
640 }
641}