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
406 && packet.hasChild("displayed", "urn:xmpp:chat-markers:0")) {
407 String id = packet
408 .findChild("displayed", "urn:xmpp:chat-markers:0")
409 .getAttribute("id");
410 updateLastseen(packet, account, true);
411 mXmppConnectionService.markMessage(account, from.toBareJid(),
412 id, Message.STATUS_SEND_DISPLAYED);
413 } else if (from != null
414 && packet.hasChild("received", "urn:xmpp:chat-markers:0")) {
415 String id = packet.findChild("received", "urn:xmpp:chat-markers:0")
416 .getAttribute("id");
417 updateLastseen(packet, account, false);
418 mXmppConnectionService.markMessage(account, from.toBareJid(),
419 id, Message.STATUS_SEND_RECEIVED);
420 } else if (from != null
421 && packet.hasChild("received", "urn:xmpp:receipts")) {
422 String id = packet.findChild("received", "urn:xmpp:receipts")
423 .getAttribute("id");
424 updateLastseen(packet, account, false);
425 mXmppConnectionService.markMessage(account, from.toBareJid(),
426 id, Message.STATUS_SEND_RECEIVED);
427 }
428 }
429
430 private Element extractInvite(Element message) {
431 Element x = message.findChild("x","http://jabber.org/protocol/muc#user");
432 if (x == null) {
433 x = message.findChild("x","jabber:x:conference");
434 }
435 if (x != null && x.hasChild("invite")) {
436 return x;
437 } else {
438 return null;
439 }
440 }
441
442 private void parseEvent(final Element event, final Jid from, final Account account) {
443 Element items = event.findChild("items");
444 if (items == null) {
445 return;
446 }
447 String node = items.getAttribute("node");
448 if (node == null) {
449 return;
450 }
451 if (node.equals("urn:xmpp:avatar:metadata")) {
452 Avatar avatar = Avatar.parseMetadata(items);
453 if (avatar != null) {
454 avatar.owner = from;
455 if (mXmppConnectionService.getFileBackend().isAvatarCached(
456 avatar)) {
457 if (account.getJid().toBareJid().equals(from)) {
458 if (account.setAvatar(avatar.getFilename())) {
459 mXmppConnectionService.databaseBackend
460 .updateAccount(account);
461 }
462 mXmppConnectionService.getAvatarService().clear(
463 account);
464 mXmppConnectionService.updateConversationUi();
465 mXmppConnectionService.updateAccountUi();
466 } else {
467 Contact contact = account.getRoster().getContact(
468 from);
469 contact.setAvatar(avatar.getFilename());
470 mXmppConnectionService.getAvatarService().clear(
471 contact);
472 mXmppConnectionService.updateConversationUi();
473 mXmppConnectionService.updateRosterUi();
474 }
475 } else {
476 mXmppConnectionService.fetchAvatar(account, avatar);
477 }
478 }
479 } else if (node.equals("http://jabber.org/protocol/nick")) {
480 Element item = items.findChild("item");
481 if (item != null) {
482 Element nick = item.findChild("nick",
483 "http://jabber.org/protocol/nick");
484 if (nick != null) {
485 if (from != null) {
486 Contact contact = account.getRoster().getContact(
487 from);
488 contact.setPresenceName(nick.getContent());
489 mXmppConnectionService.getAvatarService().clear(account);
490 mXmppConnectionService.updateConversationUi();
491 mXmppConnectionService.updateAccountUi();
492 }
493 }
494 }
495 }
496 }
497
498 private String getPgpBody(Element message) {
499 Element child = message.findChild("x", "jabber:x:encrypted");
500 if (child == null) {
501 return null;
502 } else {
503 return child.getContent();
504 }
505 }
506
507 private boolean isMarkable(Element message) {
508 return message.hasChild("markable", "urn:xmpp:chat-markers:0");
509 }
510
511 @Override
512 public void onMessagePacketReceived(Account account, MessagePacket packet) {
513 Message message = null;
514 this.parseNick(packet, account);
515 if ((packet.getType() == MessagePacket.TYPE_CHAT || packet.getType() == MessagePacket.TYPE_NORMAL)) {
516 if ((packet.getBody() != null)
517 && (packet.getBody().startsWith("?OTR"))) {
518 message = this.parseOtrChat(packet, account);
519 if (message != null) {
520 message.markUnread();
521 }
522 } else if (packet.hasChild("body") && extractInvite(packet) == null) {
523 message = this.parseChat(packet, account);
524 if (message != null) {
525 message.markUnread();
526 }
527 } else if (packet.hasChild("received", "urn:xmpp:carbons:2")
528 || (packet.hasChild("sent", "urn:xmpp:carbons:2"))) {
529 message = this.parseCarbonMessage(packet, account);
530 if (message != null) {
531 if (message.getStatus() == Message.STATUS_SEND) {
532 account.activateGracePeriod();
533 mXmppConnectionService.markRead(message.getConversation());
534 } else {
535 message.markUnread();
536 }
537 }
538 } else if (packet.hasChild("result","urn:xmpp:mam:0")) {
539 message = parseMamMessage(packet, account);
540 if (message != null) {
541 Conversation conversation = message.getConversation();
542 conversation.add(message);
543 mXmppConnectionService.databaseBackend.createMessage(message);
544 }
545 return;
546 } else if (packet.hasChild("fin","urn:xmpp:mam:0")) {
547 Element fin = packet.findChild("fin","urn:xmpp:mam:0");
548 mXmppConnectionService.getMessageArchiveService().processFin(fin);
549 } else {
550 parseNonMessage(packet, account);
551 }
552 } else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) {
553 message = this.parseGroupchat(packet, account);
554 if (message != null) {
555 if (message.getStatus() == Message.STATUS_RECEIVED) {
556 message.markUnread();
557 } else {
558 mXmppConnectionService.markRead(message.getConversation());
559 account.activateGracePeriod();
560 }
561 }
562 } else if (packet.getType() == MessagePacket.TYPE_ERROR) {
563 this.parseError(packet, account);
564 return;
565 } else if (packet.getType() == MessagePacket.TYPE_HEADLINE) {
566 this.parseHeadline(packet, account);
567 return;
568 }
569 if ((message == null) || (message.getBody() == null)) {
570 return;
571 }
572 if ((mXmppConnectionService.confirmMessages())
573 && ((packet.getId() != null))) {
574 if (packet.hasChild("markable", "urn:xmpp:chat-markers:0")) {
575 MessagePacket receipt = mXmppConnectionService
576 .getMessageGenerator().received(account, packet,
577 "urn:xmpp:chat-markers:0");
578 mXmppConnectionService.sendMessagePacket(account, receipt);
579 }
580 if (packet.hasChild("request", "urn:xmpp:receipts")) {
581 MessagePacket receipt = mXmppConnectionService
582 .getMessageGenerator().received(account, packet,
583 "urn:xmpp:receipts");
584 mXmppConnectionService.sendMessagePacket(account, receipt);
585 }
586 }
587 Conversation conversation = message.getConversation();
588 conversation.add(message);
589 if (account.getXmppConnection() != null && account.getXmppConnection().getFeatures().advancedStreamFeaturesLoaded()) {
590 if (conversation.setLastMessageTransmitted(System.currentTimeMillis())) {
591 mXmppConnectionService.updateConversation(conversation);
592 }
593 }
594
595 if (message.getStatus() == Message.STATUS_RECEIVED
596 && conversation.getOtrSession() != null
597 && !conversation.getOtrSession().getSessionID().getUserID()
598 .equals(message.getCounterpart().getResourcepart())) {
599 conversation.endOtrIfNeeded();
600 }
601
602 if (packet.getType() != MessagePacket.TYPE_ERROR) {
603 if (message.getEncryption() == Message.ENCRYPTION_NONE
604 || mXmppConnectionService.saveEncryptedMessages()) {
605 mXmppConnectionService.databaseBackend.createMessage(message);
606 }
607 }
608 final HttpConnectionManager manager = this.mXmppConnectionService.getHttpConnectionManager();
609 if (message.trusted() && message.bodyContainsDownloadable() && manager.getAutoAcceptFileSize() > 0) {
610 manager.createNewConnection(message);
611 } else if (!message.isRead()) {
612 mXmppConnectionService.getNotificationService().push(message);
613 }
614 mXmppConnectionService.updateConversationUi();
615 }
616
617 private void parseHeadline(MessagePacket packet, Account account) {
618 if (packet.hasChild("event", "http://jabber.org/protocol/pubsub#event")) {
619 Element event = packet.findChild("event",
620 "http://jabber.org/protocol/pubsub#event");
621 parseEvent(event, packet.getFrom(), account);
622 }
623 }
624
625 private void parseNick(MessagePacket packet, Account account) {
626 Element nick = packet.findChild("nick",
627 "http://jabber.org/protocol/nick");
628 if (nick != null) {
629 if (packet.getFrom() != null) {
630 Contact contact = account.getRoster().getContact(
631 packet.getFrom());
632 contact.setPresenceName(nick.getContent());
633 }
634 }
635 }
636}