1package eu.siacs.conversations.parser;
  2
  3import android.text.Html;
  4import android.util.Log;
  5import android.util.Pair;
  6
  7import net.java.otr4j.session.Session;
  8import net.java.otr4j.session.SessionStatus;
  9
 10import java.text.SimpleDateFormat;
 11import java.util.ArrayList;
 12import java.util.Arrays;
 13import java.util.Date;
 14import java.util.List;
 15import java.util.Set;
 16import java.util.UUID;
 17
 18import eu.siacs.conversations.Config;
 19import eu.siacs.conversations.crypto.OtrService;
 20import eu.siacs.conversations.crypto.axolotl.AxolotlService;
 21import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage;
 22import eu.siacs.conversations.entities.Account;
 23import eu.siacs.conversations.entities.Bookmark;
 24import eu.siacs.conversations.entities.Contact;
 25import eu.siacs.conversations.entities.Conversation;
 26import eu.siacs.conversations.entities.Message;
 27import eu.siacs.conversations.entities.MucOptions;
 28import eu.siacs.conversations.entities.Presence;
 29import eu.siacs.conversations.entities.ServiceDiscoveryResult;
 30import eu.siacs.conversations.http.HttpConnectionManager;
 31import eu.siacs.conversations.services.MessageArchiveService;
 32import eu.siacs.conversations.services.XmppConnectionService;
 33import eu.siacs.conversations.utils.CryptoHelper;
 34import eu.siacs.conversations.xml.Namespace;
 35import eu.siacs.conversations.xml.Element;
 36import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
 37import eu.siacs.conversations.xmpp.chatstate.ChatState;
 38import eu.siacs.conversations.xmpp.jid.Jid;
 39import eu.siacs.conversations.xmpp.pep.Avatar;
 40import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
 41
 42public class MessageParser extends AbstractParser implements OnMessagePacketReceived {
 43
 44	private static final List<String> CLIENTS_SENDING_HTML_IN_OTR = Arrays.asList("Pidgin","Adium","Trillian");
 45
 46	public MessageParser(XmppConnectionService service) {
 47		super(service);
 48	}
 49
 50	private boolean extractChatState(Conversation conversation, final MessagePacket packet) {
 51		ChatState state = ChatState.parse(packet);
 52		if (state != null && conversation != null) {
 53			final Account account = conversation.getAccount();
 54			Jid from = packet.getFrom();
 55			if (from.toBareJid().equals(account.getJid().toBareJid())) {
 56				conversation.setOutgoingChatState(state);
 57				if (state == ChatState.ACTIVE || state == ChatState.COMPOSING) {
 58					mXmppConnectionService.markRead(conversation);
 59					activateGracePeriod(account);
 60				}
 61				return false;
 62			} else {
 63				return conversation.setIncomingChatState(state);
 64			}
 65		}
 66		return false;
 67	}
 68
 69	private Message parseOtrChat(String body, Jid from, String id, Conversation conversation) {
 70		String presence;
 71		if (from.isBareJid()) {
 72			presence = "";
 73		} else {
 74			presence = from.getResourcepart();
 75		}
 76		if (body.matches("^\\?OTRv\\d{1,2}\\?.*")) {
 77			conversation.endOtrIfNeeded();
 78		}
 79		if (!conversation.hasValidOtrSession()) {
 80			conversation.startOtrSession(presence,false);
 81		} else {
 82			String foreignPresence = conversation.getOtrSession().getSessionID().getUserID();
 83			if (!foreignPresence.equals(presence)) {
 84				conversation.endOtrIfNeeded();
 85				conversation.startOtrSession(presence, false);
 86			}
 87		}
 88		try {
 89			conversation.setLastReceivedOtrMessageId(id);
 90			Session otrSession = conversation.getOtrSession();
 91			body = otrSession.transformReceiving(body);
 92			SessionStatus status = otrSession.getSessionStatus();
 93			if (body == null && status == SessionStatus.ENCRYPTED) {
 94				mXmppConnectionService.onOtrSessionEstablished(conversation);
 95				return null;
 96			} else if (body == null && status == SessionStatus.FINISHED) {
 97				conversation.resetOtrSession();
 98				mXmppConnectionService.updateConversationUi();
 99				return null;
100			} else if (body == null || (body.isEmpty())) {
101				return null;
102			}
103			if (body.startsWith(CryptoHelper.FILETRANSFER)) {
104				String key = body.substring(CryptoHelper.FILETRANSFER.length());
105				conversation.setSymmetricKey(CryptoHelper.hexToBytes(key));
106				return null;
107			}
108			if (clientMightSendHtml(conversation.getAccount(), from)) {
109				Log.d(Config.LOGTAG,conversation.getAccount().getJid().toBareJid()+": received OTR message from bad behaving client. escaping HTML…");
110				body = Html.fromHtml(body).toString();
111			}
112
113			final OtrService otrService = conversation.getAccount().getOtrService();
114			Message finishedMessage = new Message(conversation, body, Message.ENCRYPTION_OTR, Message.STATUS_RECEIVED);
115			finishedMessage.setFingerprint(otrService.getFingerprint(otrSession.getRemotePublicKey()));
116			conversation.setLastReceivedOtrMessageId(null);
117
118			return finishedMessage;
119		} catch (Exception e) {
120			conversation.resetOtrSession();
121			return null;
122		}
123	}
124
125	private static boolean clientMightSendHtml(Account account, Jid from) {
126		String resource = from.getResourcepart();
127		if (resource == null) {
128			return false;
129		}
130		Presence presence = account.getRoster().getContact(from).getPresences().getPresences().get(resource);
131		ServiceDiscoveryResult disco = presence == null ? null : presence.getServiceDiscoveryResult();
132		if (disco == null) {
133			return false;
134		}
135		return hasIdentityKnowForSendingHtml(disco.getIdentities());
136	}
137
138	private static boolean hasIdentityKnowForSendingHtml(List<ServiceDiscoveryResult.Identity> identities) {
139		for(ServiceDiscoveryResult.Identity identity : identities) {
140			if (identity.getName() != null) {
141				if (CLIENTS_SENDING_HTML_IN_OTR.contains(identity.getName())) {
142					return true;
143				}
144			}
145		}
146		return false;
147	}
148
149	private Message parseAxolotlChat(Element axolotlMessage, Jid from,  Conversation conversation, int status) {
150		AxolotlService service = conversation.getAccount().getAxolotlService();
151		XmppAxolotlMessage xmppAxolotlMessage;
152		try {
153			xmppAxolotlMessage = XmppAxolotlMessage.fromElement(axolotlMessage, from.toBareJid());
154		} catch (Exception e) {
155			Log.d(Config.LOGTAG,conversation.getAccount().getJid().toBareJid()+": invalid omemo message received "+e.getMessage());
156			return null;
157		}
158		XmppAxolotlMessage.XmppAxolotlPlaintextMessage plaintextMessage = service.processReceivingPayloadMessage(xmppAxolotlMessage);
159		if(plaintextMessage != null) {
160			Message finishedMessage = new Message(conversation, plaintextMessage.getPlaintext(), Message.ENCRYPTION_AXOLOTL, status);
161			finishedMessage.setFingerprint(plaintextMessage.getFingerprint());
162			Log.d(Config.LOGTAG, AxolotlService.getLogprefix(finishedMessage.getConversation().getAccount())+" Received Message with session fingerprint: "+plaintextMessage.getFingerprint());
163			return finishedMessage;
164		} else {
165			return null;
166		}
167	}
168
169	private class Invite {
170		final Jid jid;
171		final String password;
172		final Contact inviter;
173		Invite(Jid jid, String password, Contact inviter) {
174			this.jid = jid;
175			this.password = password;
176			this.inviter = inviter;
177		}
178
179		public boolean execute(Account account) {
180			if (jid != null) {
181				Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, jid, true);
182				if (!conversation.getMucOptions().online()) {
183					conversation.getMucOptions().setPassword(password);
184					mXmppConnectionService.databaseBackend.updateConversation(conversation);
185					mXmppConnectionService.joinMuc(conversation, inviter != null && inviter.mutualPresenceSubscription());
186					mXmppConnectionService.updateConversationUi();
187				}
188				return true;
189			}
190			return false;
191		}
192	}
193
194	private Invite extractInvite(Account account, Element message) {
195		Element x = message.findChild("x", "http://jabber.org/protocol/muc#user");
196		if (x != null) {
197			Element invite = x.findChild("invite");
198			if (invite != null) {
199				Element pw = x.findChild("password");
200				Jid from = invite.getAttributeAsJid("from");
201				Contact contact = from == null ? null : account.getRoster().getContact(from);
202				return new Invite(message.getAttributeAsJid("from"), pw != null ? pw.getContent(): null, contact);
203			}
204		} else {
205			x = message.findChild("x","jabber:x:conference");
206			if (x != null) {
207				Jid from = message.getAttributeAsJid("from");
208				Contact contact = from == null ? null : account.getRoster().getContact(from);
209				return new Invite(x.getAttributeAsJid("jid"),x.getAttribute("password"),contact);
210			}
211		}
212		return null;
213	}
214
215	private static String extractStanzaid(Element packet, boolean isTypeGroupChat, Conversation conversation) {
216		final Jid by;
217		final boolean safeToExtract;
218		if (isTypeGroupChat) {
219			by = conversation.getJid().toBareJid();
220			safeToExtract = conversation.getMucOptions().hasFeature(Namespace.STANZA_IDS);
221		} else {
222			Account account = conversation.getAccount();
223			by = account.getJid().toBareJid();
224			safeToExtract = account.getXmppConnection().getFeatures().stanzaIds();
225		}
226		return safeToExtract ? extractStanzaId(packet, by) : null;
227	}
228
229	private static String extractStanzaId(Element packet, Jid by) {
230		for(Element child : packet.getChildren()) {
231			if (child.getName().equals("stanza-id")
232					&& Namespace.STANZA_IDS.equals(child.getNamespace())
233					&& by.equals(child.getAttributeAsJid("by"))) {
234				return child.getAttribute("id");
235			}
236		}
237		return null;
238	}
239
240	private void parseEvent(final Element event, final Jid from, final Account account) {
241		Element items = event.findChild("items");
242		String node = items == null ? null : items.getAttribute("node");
243		if ("urn:xmpp:avatar:metadata".equals(node)) {
244			Avatar avatar = Avatar.parseMetadata(items);
245			if (avatar != null) {
246				avatar.owner = from.toBareJid();
247				if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
248					if (account.getJid().toBareJid().equals(from)) {
249						if (account.setAvatar(avatar.getFilename())) {
250							mXmppConnectionService.databaseBackend.updateAccount(account);
251						}
252						mXmppConnectionService.getAvatarService().clear(account);
253						mXmppConnectionService.updateConversationUi();
254						mXmppConnectionService.updateAccountUi();
255					} else {
256						Contact contact = account.getRoster().getContact(from);
257						contact.setAvatar(avatar);
258						mXmppConnectionService.getAvatarService().clear(contact);
259						mXmppConnectionService.updateConversationUi();
260						mXmppConnectionService.updateRosterUi();
261					}
262				} else if (mXmppConnectionService.isDataSaverDisabled()) {
263					mXmppConnectionService.fetchAvatar(account, avatar);
264				}
265			}
266		} else if ("http://jabber.org/protocol/nick".equals(node)) {
267			Element i = items.findChild("item");
268			Element nick = i == null ? null : i.findChild("nick", "http://jabber.org/protocol/nick");
269			if (nick != null && nick.getContent() != null) {
270				Contact contact = account.getRoster().getContact(from);
271				contact.setPresenceName(nick.getContent());
272				mXmppConnectionService.getAvatarService().clear(account);
273				mXmppConnectionService.updateConversationUi();
274				mXmppConnectionService.updateAccountUi();
275			}
276		} else if (AxolotlService.PEP_DEVICE_LIST.equals(node)) {
277
278			Element item = items.findChild("item");
279			Set<Integer> deviceIds = mXmppConnectionService.getIqParser().deviceIds(item);
280			Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Received PEP device list ("+deviceIds+") update from "+ from + ", processing...");
281			AxolotlService axolotlService = account.getAxolotlService();
282			axolotlService.registerDevices(from, deviceIds);
283			mXmppConnectionService.updateAccountUi();
284		}
285	}
286
287	private boolean handleErrorMessage(Account account, MessagePacket packet) {
288		if (packet.getType() == MessagePacket.TYPE_ERROR) {
289			Jid from = packet.getFrom();
290			if (from != null) {
291				Message message = mXmppConnectionService.markMessage(account,
292						from.toBareJid(),
293						packet.getId(),
294						Message.STATUS_SEND_FAILED,
295						extractErrorMessage(packet));
296				if (message != null) {
297					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
298						message.getConversation().endOtrIfNeeded();
299					}
300				}
301			}
302			return true;
303		}
304		return false;
305	}
306
307	@Override
308	public void onMessagePacketReceived(Account account, MessagePacket original) {
309		if (handleErrorMessage(account, original)) {
310			return;
311		}
312		final MessagePacket packet;
313		Long timestamp = null;
314		final boolean isForwarded;
315		boolean isCarbon = false;
316		String serverMsgId = null;
317		final Element fin = original.findChild("fin", Namespace.MAM_LEGACY);
318		if (fin != null) {
319			mXmppConnectionService.getMessageArchiveService().processFinLegacy(fin,original.getFrom());
320			return;
321		}
322		final boolean mamLegacy = original.hasChild("result", Namespace.MAM_LEGACY);
323		final Element result = original.findChild("result",mamLegacy ? Namespace.MAM_LEGACY : Namespace.MAM);
324		final MessageArchiveService.Query query = result == null ? null : mXmppConnectionService.getMessageArchiveService().findQuery(result.getAttribute("queryid"));
325		if (query != null && query.validFrom(original.getFrom())) {
326			Pair<MessagePacket, Long> f = original.getForwardedMessagePacket("result", mamLegacy ? Namespace.MAM_LEGACY : Namespace.MAM);
327			if (f == null) {
328				return;
329			}
330			timestamp = f.second;
331			packet = f.first;
332			isForwarded = true;
333			serverMsgId = result.getAttribute("id");
334			query.incrementMessageCount();
335		} else if (query != null) {
336			Log.d(Config.LOGTAG,account.getJid().toBareJid()+": received mam result from invalid sender");
337			return;
338		} else if (original.fromServer(account)) {
339			Pair<MessagePacket, Long> f;
340			f = original.getForwardedMessagePacket("received", "urn:xmpp:carbons:2");
341			f = f == null ? original.getForwardedMessagePacket("sent", "urn:xmpp:carbons:2") : f;
342			packet = f != null ? f.first : original;
343			if (handleErrorMessage(account, packet)) {
344				return;
345			}
346			timestamp = f != null ? f.second : null;
347			isCarbon = f != null;
348			isForwarded = isCarbon;
349		} else {
350			packet = original;
351			isForwarded = false;
352		}
353
354		if (timestamp == null) {
355			timestamp = AbstractParser.parseTimestamp(original,AbstractParser.parseTimestamp(packet));
356		}
357		final String body = packet.getBody();
358		final Element mucUserElement = packet.findChild("x", "http://jabber.org/protocol/muc#user");
359		final String pgpEncrypted = packet.findChildContent("x", "jabber:x:encrypted");
360		final Element replaceElement = packet.findChild("replace", "urn:xmpp:message-correct:0");
361		final Element oob = packet.findChild("x", "jabber:x:oob");
362		final boolean isOob = oob!= null && body != null && body.equals(oob.findChildContent("url"));
363		final String replacementId = replaceElement == null ? null : replaceElement.getAttribute("id");
364		final Element axolotlEncrypted = packet.findChild(XmppAxolotlMessage.CONTAINERTAG, AxolotlService.PEP_PREFIX);
365		int status;
366		final Jid counterpart;
367		final Jid to = packet.getTo();
368		final Jid from = packet.getFrom();
369		final String remoteMsgId = packet.getId();
370		boolean notify = false;
371
372		if (from == null) {
373			Log.d(Config.LOGTAG,"no from in: "+packet.toString());
374			return;
375		}
376		
377		boolean isTypeGroupChat = packet.getType() == MessagePacket.TYPE_GROUPCHAT;
378		boolean isProperlyAddressed = (to != null ) && (!to.isBareJid() || account.countPresences() == 0);
379		boolean isMucStatusMessage = from.isBareJid() && mucUserElement != null && mucUserElement.hasChild("status");
380		if (packet.fromAccount(account)) {
381			status = Message.STATUS_SEND;
382			counterpart = to != null ? to : account.getJid();
383		} else {
384			status = Message.STATUS_RECEIVED;
385			counterpart = from;
386		}
387
388		Invite invite = extractInvite(account, packet);
389		if (invite != null && invite.execute(account)) {
390			return;
391		}
392
393		if (!isTypeGroupChat
394				&& query == null
395				&& extractChatState(mXmppConnectionService.find(account, counterpart.toBareJid()), packet)) {
396			mXmppConnectionService.updateConversationUi();
397		}
398
399		if ((body != null || pgpEncrypted != null || axolotlEncrypted != null) && !isMucStatusMessage) {
400			Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, counterpart.toBareJid(), isTypeGroupChat, false, query);
401			final boolean conversationMultiMode = conversation.getMode() == Conversation.MODE_MULTI;
402
403			if (serverMsgId == null) {
404				extractStanzaid(packet, isTypeGroupChat, conversation);
405			}
406
407			if (isTypeGroupChat) {
408				if (counterpart.getResourcepart().equals(conversation.getMucOptions().getActualNick())) {
409					status = Message.STATUS_SEND_RECEIVED;
410					isCarbon = true; //not really carbon but received from another resource
411					if (mXmppConnectionService.markMessage(conversation, remoteMsgId, status, serverMsgId)) {
412						return;
413					} else if (remoteMsgId == null || Config.IGNORE_ID_REWRITE_IN_MUC) {
414						Message message = conversation.findSentMessageWithBody(packet.getBody());
415						if (message != null) {
416							mXmppConnectionService.markMessage(message, status);
417							return;
418						}
419					}
420				} else {
421					status = Message.STATUS_RECEIVED;
422				}
423			}
424			final Message message;
425			if (body != null && body.startsWith("?OTR") && Config.supportOtr()) {
426				if (!isForwarded && !isTypeGroupChat && isProperlyAddressed && !conversationMultiMode) {
427					message = parseOtrChat(body, from, remoteMsgId, conversation);
428					if (message == null) {
429						return;
430					}
431				} else {
432					Log.d(Config.LOGTAG,account.getJid().toBareJid()+": ignoring OTR message from "+from+" isForwarded="+Boolean.toString(isForwarded)+", isProperlyAddressed="+Boolean.valueOf(isProperlyAddressed));
433					message = new Message(conversation, body, Message.ENCRYPTION_NONE, status);
434				}
435			} else if (pgpEncrypted != null && Config.supportOpenPgp()) {
436				message = new Message(conversation, pgpEncrypted, Message.ENCRYPTION_PGP, status);
437			} else if (axolotlEncrypted != null && Config.supportOmemo()) {
438				Jid origin;
439				if (conversationMultiMode) {
440					final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
441					origin = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
442					if (origin == null) {
443						Log.d(Config.LOGTAG,"axolotl message in non anonymous conference received");
444						return;
445					}
446				} else {
447					origin = from;
448				}
449				message = parseAxolotlChat(axolotlEncrypted, origin, conversation, status);
450				if (message == null) {
451					return;
452				}
453				if (conversationMultiMode) {
454					message.setTrueCounterpart(origin);
455				}
456			} else {
457				message = new Message(conversation, body, Message.ENCRYPTION_NONE, status);
458			}
459
460			message.setCounterpart(counterpart);
461			message.setRemoteMsgId(remoteMsgId);
462			message.setServerMsgId(serverMsgId);
463			message.setCarbon(isCarbon);
464			message.setTime(timestamp);
465			message.setOob(isOob);
466			message.markable = packet.hasChild("markable", "urn:xmpp:chat-markers:0");
467			if (conversationMultiMode) {
468				final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
469				Jid trueCounterpart;
470				if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
471					trueCounterpart = message.getTrueCounterpart();
472				} else if (Config.PARSE_REAL_JID_FROM_MUC_MAM) {
473					trueCounterpart = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
474				} else {
475					trueCounterpart = fallback;
476				}
477				if (trueCounterpart != null && trueCounterpart.toBareJid().equals(account.getJid().toBareJid())) {
478					status = isTypeGroupChat ? Message.STATUS_SEND_RECEIVED : Message.STATUS_SEND;
479				}
480				message.setStatus(status);
481				message.setTrueCounterpart(trueCounterpart);
482				if (!isTypeGroupChat) {
483					message.setType(Message.TYPE_PRIVATE);
484				}
485			} else {
486				updateLastseen(account, from);
487			}
488
489			if (replacementId != null && mXmppConnectionService.allowMessageCorrection()) {
490				Message replacedMessage = conversation.findMessageWithRemoteIdAndCounterpart(replacementId,
491						counterpart,
492						message.getStatus() == Message.STATUS_RECEIVED,
493						message.isCarbon());
494				if (replacedMessage != null) {
495					final boolean fingerprintsMatch = replacedMessage.getFingerprint() == null
496							|| replacedMessage.getFingerprint().equals(message.getFingerprint());
497					final boolean trueCountersMatch = replacedMessage.getTrueCounterpart() != null
498							&& replacedMessage.getTrueCounterpart().equals(message.getTrueCounterpart());
499					final boolean duplicate = conversation.hasDuplicateMessage(message);
500					if (fingerprintsMatch && (trueCountersMatch || !conversationMultiMode) && !duplicate) {
501						Log.d(Config.LOGTAG, "replaced message '" + replacedMessage.getBody() + "' with '" + message.getBody() + "'");
502						synchronized (replacedMessage) {
503							final String uuid = replacedMessage.getUuid();
504							replacedMessage.setUuid(UUID.randomUUID().toString());
505							replacedMessage.setBody(message.getBody());
506							replacedMessage.setEdited(replacedMessage.getRemoteMsgId());
507							replacedMessage.setRemoteMsgId(remoteMsgId);
508							replacedMessage.setEncryption(message.getEncryption());
509							if (replacedMessage.getStatus() == Message.STATUS_RECEIVED) {
510								replacedMessage.markUnread();
511							}
512							mXmppConnectionService.updateMessage(replacedMessage, uuid);
513							mXmppConnectionService.getNotificationService().updateNotification(false);
514							if (mXmppConnectionService.confirmMessages()
515									&& (replacedMessage.trusted() || replacedMessage.getType() == Message.TYPE_PRIVATE)
516									&& remoteMsgId != null
517									&& !isForwarded
518									&& !isTypeGroupChat) {
519								sendMessageReceipts(account, packet);
520							}
521							if (replacedMessage.getEncryption() == Message.ENCRYPTION_PGP) {
522								conversation.getAccount().getPgpDecryptionService().discard(replacedMessage);
523								conversation.getAccount().getPgpDecryptionService().decrypt(replacedMessage, false);
524							}
525						}
526						return;
527					} else {
528						Log.d(Config.LOGTAG,account.getJid().toBareJid()+": received message correction but verification didn't check out");
529					}
530				}
531			}
532
533			long deletionDate = mXmppConnectionService.getAutomaticMessageDeletionDate();
534			if (deletionDate != 0 && message.getTimeSent() < deletionDate) {
535				Log.d(Config.LOGTAG,account.getJid().toBareJid()+": skipping message from "+message.getCounterpart().toString()+" because it was sent prior to our deletion date");
536				return;
537			}
538
539			boolean checkForDuplicates = (isTypeGroupChat && packet.hasChild("delay","urn:xmpp:delay"))
540					|| message.getType() == Message.TYPE_PRIVATE
541					|| message.getServerMsgId() != null;
542			if (checkForDuplicates && conversation.hasDuplicateMessage(message)) {
543				Log.d(Config.LOGTAG,"skipping duplicate message from "+message.getCounterpart().toString()+" "+message.getBody());
544				return;
545			}
546
547			if (query != null && query.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) {
548				conversation.prepend(message);
549			} else {
550				conversation.add(message);
551			}
552			if (query != null) {
553				query.incrementActualMessageCount();
554			}
555
556			if (query == null || query.isCatchup()) { //either no mam or catchup
557				if (status == Message.STATUS_SEND || status == Message.STATUS_SEND_RECEIVED) {
558					mXmppConnectionService.markRead(conversation);
559					if (query == null) {
560						activateGracePeriod(account);
561					}
562				} else {
563					message.markUnread();
564					notify = true;
565				}
566			}
567
568			if (message.getEncryption() == Message.ENCRYPTION_PGP) {
569				notify = conversation.getAccount().getPgpDecryptionService().decrypt(message, notify);
570			}
571
572			if (query == null) {
573				mXmppConnectionService.updateConversationUi();
574			}
575
576			if (mXmppConnectionService.confirmMessages()
577					&& (message.trusted() || message.getType() == Message.TYPE_PRIVATE)
578					&& remoteMsgId != null
579					&& !isForwarded
580					&& !isTypeGroupChat) {
581				sendMessageReceipts(account, packet);
582			}
583
584			if (message.getStatus() == Message.STATUS_RECEIVED
585					&& conversation.getOtrSession() != null
586					&& !conversation.getOtrSession().getSessionID().getUserID()
587					.equals(message.getCounterpart().getResourcepart())) {
588				conversation.endOtrIfNeeded();
589			}
590
591			mXmppConnectionService.databaseBackend.createMessage(message);
592			final HttpConnectionManager manager = this.mXmppConnectionService.getHttpConnectionManager();
593			if (message.trusted() && message.treatAsDownloadable() != Message.Decision.NEVER && manager.getAutoAcceptFileSize() > 0) {
594				manager.createNewDownloadConnection(message);
595			} else if (notify) {
596				if (query == null) {
597					mXmppConnectionService.getNotificationService().push(message);
598				} else if (query.isCatchup()) { // mam catchup
599					mXmppConnectionService.getNotificationService().pushFromBacklog(message);
600				}
601			}
602		} else if (!packet.hasChild("body")){ //no body
603			Conversation conversation = mXmppConnectionService.find(account, from.toBareJid());
604			if (isTypeGroupChat) {
605				if (packet.hasChild("subject")) {
606					if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
607						conversation.setHasMessagesLeftOnServer(conversation.countMessages() > 0);
608						String subject = packet.findChildContent("subject");
609						conversation.getMucOptions().setSubject(subject);
610						final Bookmark bookmark = conversation.getBookmark();
611						if (bookmark != null && bookmark.getBookmarkName() == null) {
612							if (bookmark.setBookmarkName(subject)) {
613								mXmppConnectionService.pushBookmarks(account);
614							}
615						}
616						mXmppConnectionService.updateConversationUi();
617						return;
618					}
619				}
620			}
621			if (conversation != null && mucUserElement != null && from.isBareJid()) {
622				for (Element child : mucUserElement.getChildren()) {
623					if ("status".equals(child.getName())) {
624						try {
625							int code = Integer.parseInt(child.getAttribute("code"));
626							if ((code >= 170 && code <= 174) || (code >= 102 && code <= 104)) {
627								mXmppConnectionService.fetchConferenceConfiguration(conversation);
628								break;
629							}
630						} catch (Exception e) {
631							//ignored
632						}
633					} else if ("item".equals(child.getName())) {
634						MucOptions.User user = AbstractParser.parseItem(conversation,child);
635						Log.d(Config.LOGTAG,account.getJid()+": changing affiliation for "
636								+user.getRealJid()+" to "+user.getAffiliation()+" in "
637								+conversation.getJid().toBareJid());
638						if (!user.realJidMatchesAccount()) {
639							conversation.getMucOptions().updateUser(user);
640							mXmppConnectionService.getAvatarService().clear(conversation);
641							mXmppConnectionService.updateMucRosterUi();
642							mXmppConnectionService.updateConversationUi();
643							if (!user.getAffiliation().ranks(MucOptions.Affiliation.MEMBER)) {
644								Jid jid = user.getRealJid();
645								List<Jid> cryptoTargets = conversation.getAcceptedCryptoTargets();
646								if (cryptoTargets.remove(user.getRealJid())) {
647									Log.d(Config.LOGTAG,account.getJid().toBareJid()+": removed "+jid+" from crypto targets of "+conversation.getName());
648									conversation.setAcceptedCryptoTargets(cryptoTargets);
649									mXmppConnectionService.updateConversation(conversation);
650								}
651							}
652						}
653					}
654				}
655			}
656		}
657
658
659
660		Element received = packet.findChild("received", "urn:xmpp:chat-markers:0");
661		if (received == null) {
662			received = packet.findChild("received", "urn:xmpp:receipts");
663		}
664		if (received != null && !packet.fromAccount(account)) {
665			mXmppConnectionService.markMessage(account, from.toBareJid(), received.getAttribute("id"), Message.STATUS_SEND_RECEIVED);
666		}
667		Element displayed = packet.findChild("displayed", "urn:xmpp:chat-markers:0");
668		if (displayed != null) {
669			if (packet.fromAccount(account)) {
670				Conversation conversation = mXmppConnectionService.find(account,counterpart.toBareJid());
671				if (conversation != null) {
672					mXmppConnectionService.markRead(conversation);
673				}
674			} else {
675				final Message displayedMessage = mXmppConnectionService.markMessage(account, from.toBareJid(), displayed.getAttribute("id"), Message.STATUS_SEND_DISPLAYED);
676				Message message = displayedMessage == null ? null : displayedMessage.prev();
677				while (message != null
678						&& message.getStatus() == Message.STATUS_SEND_RECEIVED
679						&& message.getTimeSent() < displayedMessage.getTimeSent()) {
680					mXmppConnectionService.markMessage(message, Message.STATUS_SEND_DISPLAYED);
681					message = message.prev();
682				}
683			}
684		}
685
686		Element event = original.findChild("event", "http://jabber.org/protocol/pubsub#event");
687		if (event != null) {
688			parseEvent(event, original.getFrom(), account);
689		}
690
691		String nick = packet.findChildContent("nick", "http://jabber.org/protocol/nick");
692		if (nick != null) {
693			Contact contact = account.getRoster().getContact(from);
694			contact.setPresenceName(nick);
695		}
696	}
697
698	private static Jid getTrueCounterpart(Element mucUserElement, Jid fallback) {
699		final Element item = mucUserElement == null ? null : mucUserElement.findChild("item");
700		Jid result = item == null ? null : item.getAttributeAsJid("jid");
701		return result != null ? result : fallback;
702	}
703
704	private void sendMessageReceipts(Account account, MessagePacket packet) {
705		ArrayList<String> receiptsNamespaces = new ArrayList<>();
706		if (packet.hasChild("markable", "urn:xmpp:chat-markers:0")) {
707			receiptsNamespaces.add("urn:xmpp:chat-markers:0");
708		}
709		if (packet.hasChild("request", "urn:xmpp:receipts")) {
710			receiptsNamespaces.add("urn:xmpp:receipts");
711		}
712		if (receiptsNamespaces.size() > 0) {
713			MessagePacket receipt = mXmppConnectionService.getMessageGenerator().received(account,
714					packet,
715					receiptsNamespaces,
716					packet.getType());
717			mXmppConnectionService.sendMessagePacket(account, receipt);
718		}
719	}
720
721	private static SimpleDateFormat TIME_FORMAT = new SimpleDateFormat("HH:mm:ss");
722
723	private void activateGracePeriod(Account account) {
724		long duration = mXmppConnectionService.getPreferences().getLong("race_period_length", 144) * 1000;
725		Log.d(Config.LOGTAG,account.getJid().toBareJid()+": activating grace period till "+TIME_FORMAT.format(new Date(System.currentTimeMillis() + duration)));
726		account.activateGracePeriod(duration);
727	}
728}