1package eu.siacs.conversations.parser;
  2
  3import android.util.Log;
  4import android.util.Pair;
  5
  6import java.text.SimpleDateFormat;
  7import java.util.ArrayList;
  8import java.util.Arrays;
  9import java.util.Date;
 10import java.util.List;
 11import java.util.Locale;
 12import java.util.Set;
 13import java.util.UUID;
 14
 15import eu.siacs.conversations.Config;
 16import eu.siacs.conversations.R;
 17import eu.siacs.conversations.crypto.axolotl.AxolotlService;
 18import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage;
 19import eu.siacs.conversations.entities.Account;
 20import eu.siacs.conversations.entities.Bookmark;
 21import eu.siacs.conversations.entities.Contact;
 22import eu.siacs.conversations.entities.Conversation;
 23import eu.siacs.conversations.entities.Message;
 24import eu.siacs.conversations.entities.MucOptions;
 25import eu.siacs.conversations.entities.ReadByMarker;
 26import eu.siacs.conversations.entities.ReceiptRequest;
 27import eu.siacs.conversations.http.HttpConnectionManager;
 28import eu.siacs.conversations.services.MessageArchiveService;
 29import eu.siacs.conversations.services.XmppConnectionService;
 30import eu.siacs.conversations.utils.CryptoHelper;
 31import eu.siacs.conversations.xml.Namespace;
 32import eu.siacs.conversations.xml.Element;
 33import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
 34import eu.siacs.conversations.xmpp.chatstate.ChatState;
 35import eu.siacs.conversations.xmpp.pep.Avatar;
 36import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
 37import rocks.xmpp.addr.Jid;
 38
 39public class MessageParser extends AbstractParser implements OnMessagePacketReceived {
 40
 41	public MessageParser(XmppConnectionService service) {
 42		super(service);
 43	}
 44
 45	private boolean extractChatState(Conversation c, final boolean isTypeGroupChat, final MessagePacket packet) {
 46		ChatState state = ChatState.parse(packet);
 47		if (state != null && c != null) {
 48			final Account account = c.getAccount();
 49			Jid from = packet.getFrom();
 50			if (from.asBareJid().equals(account.getJid().asBareJid())) {
 51				c.setOutgoingChatState(state);
 52				if (state == ChatState.ACTIVE || state == ChatState.COMPOSING) {
 53					mXmppConnectionService.markRead(c);
 54					activateGracePeriod(account);
 55				}
 56				return false;
 57			} else {
 58				if (isTypeGroupChat) {
 59					MucOptions.User user = c.getMucOptions().findUserByFullJid(from);
 60					if (user != null) {
 61						return user.setChatState(state);
 62					} else {
 63						return false;
 64					}
 65				} else {
 66					return c.setIncomingChatState(state);
 67				}
 68			}
 69		}
 70		return false;
 71	}
 72
 73	private Message parseAxolotlChat(Element axolotlMessage, Jid from, Conversation conversation, int status, boolean postpone) {
 74		final AxolotlService service = conversation.getAccount().getAxolotlService();
 75		final XmppAxolotlMessage xmppAxolotlMessage;
 76		try {
 77			xmppAxolotlMessage = XmppAxolotlMessage.fromElement(axolotlMessage, from.asBareJid());
 78		} catch (Exception e) {
 79			Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": invalid omemo message received " + e.getMessage());
 80			return null;
 81		}
 82		if (xmppAxolotlMessage.hasPayload()) {
 83			final XmppAxolotlMessage.XmppAxolotlPlaintextMessage plaintextMessage = service.processReceivingPayloadMessage(xmppAxolotlMessage, postpone);
 84			if (plaintextMessage != null) {
 85				Message finishedMessage = new Message(conversation, plaintextMessage.getPlaintext(), Message.ENCRYPTION_AXOLOTL, status);
 86				finishedMessage.setFingerprint(plaintextMessage.getFingerprint());
 87				Log.d(Config.LOGTAG, AxolotlService.getLogprefix(finishedMessage.getConversation().getAccount()) + " Received Message with session fingerprint: " + plaintextMessage.getFingerprint());
 88				return finishedMessage;
 89			}
 90		} else {
 91			Log.d(Config.LOGTAG,conversation.getAccount().getJid().asBareJid()+": received OMEMO key transport message");
 92			service.processReceivingKeyTransportMessage(xmppAxolotlMessage, postpone);
 93		}
 94		return null;
 95	}
 96
 97	private class Invite {
 98		final Jid jid;
 99		final String password;
100		final Contact inviter;
101
102		Invite(Jid jid, String password, Contact inviter) {
103			this.jid = jid;
104			this.password = password;
105			this.inviter = inviter;
106		}
107
108		public boolean execute(Account account) {
109			if (jid != null) {
110				Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, jid, true, false);
111				if (!conversation.getMucOptions().online()) {
112					conversation.getMucOptions().setPassword(password);
113					mXmppConnectionService.databaseBackend.updateConversation(conversation);
114					mXmppConnectionService.joinMuc(conversation, inviter != null && inviter.mutualPresenceSubscription());
115					mXmppConnectionService.updateConversationUi();
116				}
117				return true;
118			}
119			return false;
120		}
121	}
122
123	private Invite extractInvite(Account account, Element message) {
124		Element x = message.findChild("x", "http://jabber.org/protocol/muc#user");
125		if (x != null) {
126			Element invite = x.findChild("invite");
127			if (invite != null) {
128				Element pw = x.findChild("password");
129				Jid from = invite.getAttributeAsJid("from");
130				Contact contact = from == null ? null : account.getRoster().getContact(from);
131				return new Invite(message.getAttributeAsJid("from"), pw != null ? pw.getContent() : null, contact);
132			}
133		} else {
134			x = message.findChild("x", "jabber:x:conference");
135			if (x != null) {
136				Jid from = message.getAttributeAsJid("from");
137				Contact contact = from == null ? null : account.getRoster().getContact(from);
138				return new Invite(x.getAttributeAsJid("jid"), x.getAttribute("password"), contact);
139			}
140		}
141		return null;
142	}
143
144	private static String extractStanzaId(Element packet, boolean isTypeGroupChat, Conversation conversation) {
145		final Jid by;
146		final boolean safeToExtract;
147		if (isTypeGroupChat) {
148			by = conversation.getJid().asBareJid();
149			safeToExtract = conversation.getMucOptions().hasFeature(Namespace.STANZA_IDS);
150		} else {
151			Account account = conversation.getAccount();
152			by = account.getJid().asBareJid();
153			safeToExtract = account.getXmppConnection().getFeatures().stanzaIds();
154		}
155		return safeToExtract ? extractStanzaId(packet, by) : null;
156	}
157
158	private static String extractStanzaId(Element packet, Jid by) {
159		for (Element child : packet.getChildren()) {
160			if (child.getName().equals("stanza-id")
161					&& Namespace.STANZA_IDS.equals(child.getNamespace())
162					&& by.equals(child.getAttributeAsJid("by"))) {
163				return child.getAttribute("id");
164			}
165		}
166		return null;
167	}
168
169	private void parseEvent(final Element event, final Jid from, final Account account) {
170		Element items = event.findChild("items");
171		String node = items == null ? null : items.getAttribute("node");
172		if ("urn:xmpp:avatar:metadata".equals(node)) {
173			Avatar avatar = Avatar.parseMetadata(items);
174			if (avatar != null) {
175				avatar.owner = from.asBareJid();
176				if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
177					if (account.getJid().asBareJid().equals(from)) {
178						if (account.setAvatar(avatar.getFilename())) {
179							mXmppConnectionService.databaseBackend.updateAccount(account);
180						}
181						mXmppConnectionService.getAvatarService().clear(account);
182						mXmppConnectionService.updateConversationUi();
183						mXmppConnectionService.updateAccountUi();
184					} else {
185						Contact contact = account.getRoster().getContact(from);
186						contact.setAvatar(avatar);
187						mXmppConnectionService.getAvatarService().clear(contact);
188						mXmppConnectionService.updateConversationUi();
189						mXmppConnectionService.updateRosterUi();
190					}
191				} else if (mXmppConnectionService.isDataSaverDisabled()) {
192					mXmppConnectionService.fetchAvatar(account, avatar);
193				}
194			}
195		} else if ("http://jabber.org/protocol/nick".equals(node)) {
196			final Element i = items.findChild("item");
197			final String nick = i == null ? null : i.findChildContent("nick", Namespace.NICK);
198			if (nick != null) {
199				Contact contact = account.getRoster().getContact(from);
200				if (contact.setPresenceName(nick)) {
201					mXmppConnectionService.getAvatarService().clear(contact);
202				}
203				mXmppConnectionService.updateConversationUi();
204				mXmppConnectionService.updateAccountUi();
205			}
206		} else if (AxolotlService.PEP_DEVICE_LIST.equals(node)) {
207			Element item = items.findChild("item");
208			Set<Integer> deviceIds = mXmppConnectionService.getIqParser().deviceIds(item);
209			Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account) + "Received PEP device list " + deviceIds + " update from " + from + ", processing... ");
210			AxolotlService axolotlService = account.getAxolotlService();
211			axolotlService.registerDevices(from, deviceIds);
212			mXmppConnectionService.updateAccountUi();
213		}
214	}
215
216	private boolean handleErrorMessage(Account account, MessagePacket packet) {
217		if (packet.getType() == MessagePacket.TYPE_ERROR) {
218			Jid from = packet.getFrom();
219			if (from != null) {
220				Message message = mXmppConnectionService.markMessage(account,
221						from.asBareJid(),
222						packet.getId(),
223						Message.STATUS_SEND_FAILED,
224						extractErrorMessage(packet));
225			}
226			return true;
227		}
228		return false;
229	}
230
231	@Override
232	public void onMessagePacketReceived(Account account, MessagePacket original) {
233		if (handleErrorMessage(account, original)) {
234			return;
235		}
236		final MessagePacket packet;
237		Long timestamp = null;
238		final boolean isForwarded;
239		boolean isCarbon = false;
240		String serverMsgId = null;
241		final Element fin = original.findChild("fin", Namespace.MAM_LEGACY);
242		if (fin != null) {
243			mXmppConnectionService.getMessageArchiveService().processFinLegacy(fin, original.getFrom());
244			return;
245		}
246		final boolean mamLegacy = original.hasChild("result", Namespace.MAM_LEGACY);
247		final Element result = original.findChild("result", mamLegacy ? Namespace.MAM_LEGACY : Namespace.MAM);
248		final MessageArchiveService.Query query = result == null ? null : mXmppConnectionService.getMessageArchiveService().findQuery(result.getAttribute("queryid"));
249		if (query != null && query.validFrom(original.getFrom())) {
250			Pair<MessagePacket, Long> f = original.getForwardedMessagePacket("result", mamLegacy ? Namespace.MAM_LEGACY : Namespace.MAM);
251			if (f == null) {
252				return;
253			}
254			timestamp = f.second;
255			packet = f.first;
256			isForwarded = true;
257			serverMsgId = result.getAttribute("id");
258			query.incrementMessageCount();
259		} else if (query != null) {
260			Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received mam result from invalid sender");
261			return;
262		} else if (original.fromServer(account)) {
263			Pair<MessagePacket, Long> f;
264			f = original.getForwardedMessagePacket("received", "urn:xmpp:carbons:2");
265			f = f == null ? original.getForwardedMessagePacket("sent", "urn:xmpp:carbons:2") : f;
266			packet = f != null ? f.first : original;
267			if (handleErrorMessage(account, packet)) {
268				return;
269			}
270			timestamp = f != null ? f.second : null;
271			isCarbon = f != null;
272			isForwarded = isCarbon;
273		} else {
274			packet = original;
275			isForwarded = false;
276		}
277
278		if (timestamp == null) {
279			timestamp = AbstractParser.parseTimestamp(original, AbstractParser.parseTimestamp(packet));
280		}
281		final String body = packet.getBody();
282		final Element mucUserElement = packet.findChild("x", "http://jabber.org/protocol/muc#user");
283		final String pgpEncrypted = packet.findChildContent("x", "jabber:x:encrypted");
284		final Element replaceElement = packet.findChild("replace", "urn:xmpp:message-correct:0");
285		final Element oob = packet.findChild("x", Namespace.OOB);
286		final String oobUrl = oob != null ? oob.findChildContent("url") : null;
287		final String replacementId = replaceElement == null ? null : replaceElement.getAttribute("id");
288		final Element axolotlEncrypted = packet.findChild(XmppAxolotlMessage.CONTAINERTAG, AxolotlService.PEP_PREFIX);
289		int status;
290		final Jid counterpart;
291		final Jid to = packet.getTo();
292		final Jid from = packet.getFrom();
293		final Element originId = packet.findChild("origin-id", Namespace.STANZA_IDS);
294		final String remoteMsgId;
295		if (originId != null && originId.getAttribute("id") != null) {
296			remoteMsgId = originId.getAttribute("id");
297		} else {
298			remoteMsgId = packet.getId();
299		}
300		boolean notify = false;
301
302		if (from == null) {
303			Log.d(Config.LOGTAG, "no from in: " + packet.toString());
304			return;
305		}
306
307		boolean isTypeGroupChat = packet.getType() == MessagePacket.TYPE_GROUPCHAT;
308		if (query != null && !query.muc() && isTypeGroupChat) {
309			Log.e(Config.LOGTAG,account.getJid().asBareJid()+": received groupchat ("+from+") message on regular MAM request. skipping");
310			return;
311		}
312		boolean isProperlyAddressed = (to != null) && (!to.isBareJid() || account.countPresences() == 0);
313		boolean isMucStatusMessage = from.isBareJid() && mucUserElement != null && mucUserElement.hasChild("status");
314		boolean selfAddressed;
315		if (packet.fromAccount(account)) {
316			status = Message.STATUS_SEND;
317			selfAddressed = to == null || account.getJid().asBareJid().equals(to.asBareJid());
318			if (selfAddressed) {
319				counterpart = from;
320			} else {
321				counterpart = to != null ? to : account.getJid();
322			}
323		} else {
324			status = Message.STATUS_RECEIVED;
325			counterpart = from;
326			selfAddressed = false;
327		}
328
329		Invite invite = extractInvite(account, packet);
330		if (invite != null && invite.execute(account)) {
331			return;
332		}
333
334		if ((body != null || pgpEncrypted != null || (axolotlEncrypted != null && axolotlEncrypted.hasChild("payload")) || oobUrl != null) && !isMucStatusMessage) {
335			final Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), isTypeGroupChat, false, query, false);
336			final boolean conversationMultiMode = conversation.getMode() == Conversation.MODE_MULTI;
337
338			if (serverMsgId == null) {
339				serverMsgId = extractStanzaId(packet, isTypeGroupChat, conversation);
340			}
341
342
343			if (selfAddressed) {
344				if (mXmppConnectionService.markMessage(conversation, remoteMsgId, Message.STATUS_SEND_RECEIVED, serverMsgId)) {
345					return;
346				}
347				status = Message.STATUS_RECEIVED;
348				if (remoteMsgId != null && conversation.findMessageWithRemoteId(remoteMsgId,counterpart) != null) {
349					return;
350				}
351			}
352
353			if (isTypeGroupChat) {
354				if (conversation.getMucOptions().isSelf(counterpart)) {
355					status = Message.STATUS_SEND_RECEIVED;
356					isCarbon = true; //not really carbon but received from another resource
357					if (mXmppConnectionService.markMessage(conversation, remoteMsgId, status, serverMsgId)) {
358						return;
359					} else if (remoteMsgId == null || Config.IGNORE_ID_REWRITE_IN_MUC) {
360						Message message = conversation.findSentMessageWithBody(packet.getBody());
361						if (message != null) {
362							mXmppConnectionService.markMessage(message, status);
363							return;
364						}
365					}
366				} else {
367					status = Message.STATUS_RECEIVED;
368				}
369			}
370			final Message message;
371			if (pgpEncrypted != null && Config.supportOpenPgp()) {
372				message = new Message(conversation, pgpEncrypted, Message.ENCRYPTION_PGP, status);
373			} else if (axolotlEncrypted != null && Config.supportOmemo()) {
374				Jid origin;
375				if (conversationMultiMode) {
376					final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
377					origin = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
378					if (origin == null) {
379						Log.d(Config.LOGTAG, "axolotl message in non anonymous conference received");
380						return;
381					}
382				} else {
383					origin = from;
384				}
385				message = parseAxolotlChat(axolotlEncrypted, origin, conversation, status, query != null);
386				if (message == null) {
387					if (query == null &&  extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet)) {
388						mXmppConnectionService.updateConversationUi();
389					}
390					if (query != null && status == Message.STATUS_SEND && remoteMsgId != null) {
391						Message previouslySent = conversation.findSentMessageWithUuid(remoteMsgId);
392						if (previouslySent != null && previouslySent.getServerMsgId() == null && serverMsgId != null) {
393							previouslySent.setServerMsgId(serverMsgId);
394							mXmppConnectionService.databaseBackend.updateMessage(previouslySent);
395							Log.d(Config.LOGTAG,account.getJid().asBareJid()+": encountered previously sent OMEMO message without serverId. updating...");
396						}
397					}
398					return;
399				}
400				if (conversationMultiMode) {
401					message.setTrueCounterpart(origin);
402				}
403			} else if (body == null && oobUrl != null) {
404				message = new Message(conversation, oobUrl, Message.ENCRYPTION_NONE, status);
405				message.setOob(true);
406				if (CryptoHelper.isPgpEncryptedUrl(oobUrl)) {
407					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
408				}
409			} else {
410				message = new Message(conversation, body, Message.ENCRYPTION_NONE, status);
411			}
412
413			message.setCounterpart(counterpart);
414			message.setRemoteMsgId(remoteMsgId);
415			message.setServerMsgId(serverMsgId);
416			message.setCarbon(isCarbon);
417			message.setTime(timestamp);
418			if (body != null && body.equals(oobUrl)) {
419				message.setOob(true);
420				if (CryptoHelper.isPgpEncryptedUrl(oobUrl)) {
421					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
422				}
423			}
424			message.markable = packet.hasChild("markable", "urn:xmpp:chat-markers:0");
425			if (conversationMultiMode) {
426				final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
427				Jid trueCounterpart;
428				if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
429					trueCounterpart = message.getTrueCounterpart();
430				} else if (query != null && query.safeToExtractTrueCounterpart()) {
431					trueCounterpart = getTrueCounterpart(mucUserElement, fallback);
432				} else {
433					trueCounterpart = fallback;
434				}
435				if (trueCounterpart != null && trueCounterpart.asBareJid().equals(account.getJid().asBareJid())) {
436					status = isTypeGroupChat ? Message.STATUS_SEND_RECEIVED : Message.STATUS_SEND;
437				}
438				message.setStatus(status);
439				message.setTrueCounterpart(trueCounterpart);
440				if (!isTypeGroupChat) {
441					message.setType(Message.TYPE_PRIVATE);
442				}
443			} else {
444				updateLastseen(account, from);
445			}
446
447			if (replacementId != null && mXmppConnectionService.allowMessageCorrection()) {
448				final Message replacedMessage = conversation.findMessageWithRemoteIdAndCounterpart(replacementId,
449						counterpart,
450						message.getStatus() == Message.STATUS_RECEIVED,
451						message.isCarbon());
452				if (replacedMessage != null) {
453					final boolean fingerprintsMatch = replacedMessage.getFingerprint() == null
454							|| replacedMessage.getFingerprint().equals(message.getFingerprint());
455					final boolean trueCountersMatch = replacedMessage.getTrueCounterpart() != null
456							&& replacedMessage.getTrueCounterpart().equals(message.getTrueCounterpart());
457					final boolean duplicate = conversation.hasDuplicateMessage(message);
458					if (fingerprintsMatch && (trueCountersMatch || !conversationMultiMode) && !duplicate) {
459						Log.d(Config.LOGTAG, "replaced message '" + replacedMessage.getBody() + "' with '" + message.getBody() + "'");
460						synchronized (replacedMessage) {
461							final String uuid = replacedMessage.getUuid();
462							replacedMessage.setUuid(UUID.randomUUID().toString());
463							replacedMessage.setBody(message.getBody());
464							replacedMessage.setEdited(replacedMessage.getRemoteMsgId());
465							replacedMessage.setRemoteMsgId(remoteMsgId);
466							if (replacedMessage.getServerMsgId() == null || message.getServerMsgId() != null) {
467								replacedMessage.setServerMsgId(message.getServerMsgId());
468							}
469							replacedMessage.setEncryption(message.getEncryption());
470							if (replacedMessage.getStatus() == Message.STATUS_RECEIVED) {
471								replacedMessage.markUnread();
472							}
473							extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet);
474							mXmppConnectionService.updateMessage(replacedMessage, uuid);
475							mXmppConnectionService.getNotificationService().updateNotification(false);
476							if (mXmppConnectionService.confirmMessages()
477									&& replacedMessage.getStatus() == Message.STATUS_RECEIVED
478									&& (replacedMessage.trusted() || replacedMessage.getType() == Message.TYPE_PRIVATE)
479									&& remoteMsgId != null
480									&& !selfAddressed
481									&& !isTypeGroupChat) {
482								processMessageReceipts(account, packet, query);
483							}
484							if (replacedMessage.getEncryption() == Message.ENCRYPTION_PGP) {
485								conversation.getAccount().getPgpDecryptionService().discard(replacedMessage);
486								conversation.getAccount().getPgpDecryptionService().decrypt(replacedMessage, false);
487							}
488						}
489						return;
490					} else {
491						Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received message correction but verification didn't check out");
492					}
493				}
494			}
495
496			long deletionDate = mXmppConnectionService.getAutomaticMessageDeletionDate();
497			if (deletionDate != 0 && message.getTimeSent() < deletionDate) {
498				Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": skipping message from " + message.getCounterpart().toString() + " because it was sent prior to our deletion date");
499				return;
500			}
501
502			boolean checkForDuplicates = (isTypeGroupChat && packet.hasChild("delay", "urn:xmpp:delay"))
503					|| message.getType() == Message.TYPE_PRIVATE
504					|| message.getServerMsgId() != null;
505			if (checkForDuplicates ) {
506				final Message duplicate = conversation.findDuplicateMessage(message);
507				if (duplicate != null) {
508					final boolean serverMsgIdUpdated;
509					if (duplicate.getStatus() != Message.STATUS_RECEIVED
510							&& duplicate.getUuid().equals(message.getRemoteMsgId())
511							&& duplicate.getServerMsgId() == null
512							&& message.getServerMsgId() != null) {
513						duplicate.setServerMsgId(message.getServerMsgId());
514						mXmppConnectionService.databaseBackend.updateMessage(message);
515						serverMsgIdUpdated = true;
516					} else {
517						serverMsgIdUpdated = false;
518					}
519					Log.d(Config.LOGTAG, "skipping duplicate message with " + message.getCounterpart()+". serverMsgIdUpdated="+Boolean.toString(serverMsgIdUpdated));
520					return;
521				}
522			}
523
524			if (query != null && query.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) {
525				conversation.prepend(query.getActualInThisQuery(),message);
526			} else {
527				conversation.add(message);
528			}
529			if (query != null) {
530				query.incrementActualMessageCount();
531			}
532
533			if (query == null || query.isCatchup()) { //either no mam or catchup
534				if (status == Message.STATUS_SEND || status == Message.STATUS_SEND_RECEIVED) {
535					mXmppConnectionService.markRead(conversation);
536					if (query == null) {
537						activateGracePeriod(account);
538					}
539				} else {
540					message.markUnread();
541					notify = true;
542				}
543			}
544
545			if (message.getEncryption() == Message.ENCRYPTION_PGP) {
546				notify = conversation.getAccount().getPgpDecryptionService().decrypt(message, notify);
547			}
548
549			if (query == null) {
550				extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet);
551				mXmppConnectionService.updateConversationUi();
552			}
553
554			if (mXmppConnectionService.confirmMessages()
555					&& message.getStatus() == Message.STATUS_RECEIVED
556					&& (message.trusted() || message.getType() == Message.TYPE_PRIVATE)
557					&& remoteMsgId != null
558					&& !selfAddressed
559					&& !isTypeGroupChat) {
560				processMessageReceipts(account, packet, query);
561			}
562
563			mXmppConnectionService.databaseBackend.createMessage(message);
564			final HttpConnectionManager manager = this.mXmppConnectionService.getHttpConnectionManager();
565			if (message.trusted() && message.treatAsDownloadable() && manager.getAutoAcceptFileSize() > 0) {
566				manager.createNewDownloadConnection(message);
567			} else if (notify) {
568				if (query != null && query.isCatchup()) {
569					mXmppConnectionService.getNotificationService().pushFromBacklog(message);
570				} else {
571					mXmppConnectionService.getNotificationService().push(message);
572				}
573			}
574		} else if (!packet.hasChild("body")) { //no body
575
576			final Conversation conversation = mXmppConnectionService.find(account, from.asBareJid());
577			if (axolotlEncrypted != null) {
578				Jid origin;
579				if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
580					final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
581					origin = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
582					if (origin == null) {
583						Log.d(Config.LOGTAG, "omemo key transport message in non anonymous conference received");
584						return;
585					}
586				} else if (isTypeGroupChat) {
587					return;
588				} else {
589					origin = from;
590				}
591				try {
592					final XmppAxolotlMessage xmppAxolotlMessage = XmppAxolotlMessage.fromElement(axolotlEncrypted, origin.asBareJid());
593					account.getAxolotlService().processReceivingKeyTransportMessage(xmppAxolotlMessage, query != null);
594					Log.d(Config.LOGTAG,account.getJid().asBareJid()+": omemo key transport message received from "+origin);
595				} catch (Exception e) {
596					Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": invalid omemo key transport message received " + e.getMessage());
597					return;
598				}
599			}
600
601			if (query == null && extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet)) {
602				mXmppConnectionService.updateConversationUi();
603			}
604
605			if (isTypeGroupChat) {
606				if (packet.hasChild("subject")) {
607					if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
608						conversation.setHasMessagesLeftOnServer(conversation.countMessages() > 0);
609						String subject = packet.findInternationalizedChildContent("subject");
610						if (conversation.getMucOptions().setSubject(subject)) {
611							mXmppConnectionService.updateConversation(conversation);
612						}
613						final Bookmark bookmark = conversation.getBookmark();
614						if (bookmark != null && bookmark.getBookmarkName() == null) {
615							if (bookmark.setBookmarkName(subject)) {
616								mXmppConnectionService.pushBookmarks(account);
617							}
618						}
619						mXmppConnectionService.updateConversationUi();
620						return;
621					}
622				}
623			}
624			if (conversation != null && mucUserElement != null && from.isBareJid()) {
625				for (Element child : mucUserElement.getChildren()) {
626					if ("status".equals(child.getName())) {
627						try {
628							int code = Integer.parseInt(child.getAttribute("code"));
629							if ((code >= 170 && code <= 174) || (code >= 102 && code <= 104)) {
630								mXmppConnectionService.fetchConferenceConfiguration(conversation);
631								break;
632							}
633						} catch (Exception e) {
634							//ignored
635						}
636					} else if ("item".equals(child.getName())) {
637						MucOptions.User user = AbstractParser.parseItem(conversation, child);
638						Log.d(Config.LOGTAG, account.getJid() + ": changing affiliation for "
639								+ user.getRealJid() + " to " + user.getAffiliation() + " in "
640								+ conversation.getJid().asBareJid());
641						if (!user.realJidMatchesAccount()) {
642							boolean isNew = conversation.getMucOptions().updateUser(user);
643							mXmppConnectionService.getAvatarService().clear(conversation);
644							mXmppConnectionService.updateMucRosterUi();
645							mXmppConnectionService.updateConversationUi();
646							Contact contact = user.getContact();
647							if (!user.getAffiliation().ranks(MucOptions.Affiliation.MEMBER)) {
648								Jid jid = user.getRealJid();
649								List<Jid> cryptoTargets = conversation.getAcceptedCryptoTargets();
650								if (cryptoTargets.remove(user.getRealJid())) {
651									Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": removed " + jid + " from crypto targets of " + conversation.getName());
652									conversation.setAcceptedCryptoTargets(cryptoTargets);
653									mXmppConnectionService.updateConversation(conversation);
654								}
655							} else if (isNew
656									&& user.getRealJid() != null
657									&& conversation.getMucOptions().isPrivateAndNonAnonymous()
658									&& (contact == null || !contact.mutualPresenceSubscription())
659									&& account.getAxolotlService().hasEmptyDeviceList(user.getRealJid())) {
660								account.getAxolotlService().fetchDeviceIds(user.getRealJid());
661							}
662						}
663					}
664				}
665			}
666		}
667
668		Element received = packet.findChild("received", "urn:xmpp:chat-markers:0");
669		if (received == null) {
670			received = packet.findChild("received", "urn:xmpp:receipts");
671		}
672		if (received != null) {
673			String id = received.getAttribute("id");
674			if (packet.fromAccount(account)) {
675				if (query != null && id != null && packet.getTo() != null) {
676					query.pendingReceiptRequests.remove(new ReceiptRequest(packet.getTo(),id));
677				}
678			} else {
679				mXmppConnectionService.markMessage(account, from.asBareJid(), received.getAttribute("id"), Message.STATUS_SEND_RECEIVED);
680			}
681		}
682		Element displayed = packet.findChild("displayed", "urn:xmpp:chat-markers:0");
683		if (displayed != null) {
684			final String id = displayed.getAttribute("id");
685			final Jid sender = displayed.getAttributeAsJid("sender");
686			if (packet.fromAccount(account) && !selfAddressed) {
687				dismissNotification(account, counterpart, query);
688			} else if (isTypeGroupChat) {
689				Conversation conversation = mXmppConnectionService.find(account, counterpart.asBareJid());
690				if (conversation != null && id != null && sender != null) {
691					Message message = conversation.findMessageWithRemoteId(id, sender);
692					if (message != null) {
693						final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
694						final Jid trueJid = getTrueCounterpart((query != null && query.safeToExtractTrueCounterpart()) ? mucUserElement : null, fallback);
695						final boolean trueJidMatchesAccount = account.getJid().asBareJid().equals(trueJid == null ? null : trueJid.asBareJid());
696						if (trueJidMatchesAccount || conversation.getMucOptions().isSelf(counterpart)) {
697							if (!message.isRead() && (query == null || query.isCatchup())) { //checking if message is unread fixes race conditions with reflections
698								mXmppConnectionService.markRead(conversation);
699							}
700						} else  if (!counterpart.isBareJid() && trueJid != null){
701							ReadByMarker readByMarker = ReadByMarker.from(counterpart, trueJid);
702							if (message.addReadByMarker(readByMarker)) {
703								Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": added read by (" + readByMarker.getRealJid() + ") to message '" + message.getBody() + "'");
704								mXmppConnectionService.updateMessage(message);
705							}
706						}
707					}
708				}
709			} else {
710				final Message displayedMessage = mXmppConnectionService.markMessage(account, from.asBareJid(), id, Message.STATUS_SEND_DISPLAYED);
711				Message message = displayedMessage == null ? null : displayedMessage.prev();
712				while (message != null
713						&& message.getStatus() == Message.STATUS_SEND_RECEIVED
714						&& message.getTimeSent() < displayedMessage.getTimeSent()) {
715					mXmppConnectionService.markMessage(message, Message.STATUS_SEND_DISPLAYED);
716					message = message.prev();
717				}
718				if (displayedMessage != null && selfAddressed) {
719					dismissNotification(account, counterpart, query);
720				}
721			}
722		}
723
724		Element event = original.findChild("event", "http://jabber.org/protocol/pubsub#event");
725		if (event != null) {
726			parseEvent(event, original.getFrom(), account);
727		}
728
729		final String nick = packet.findChildContent("nick", Namespace.NICK);
730		if (nick != null) {
731			Contact contact = account.getRoster().getContact(from);
732			if (contact.setPresenceName(nick)) {
733				mXmppConnectionService.getAvatarService().clear(contact);
734			}
735		}
736	}
737
738	private void dismissNotification(Account account, Jid counterpart, MessageArchiveService.Query query) {
739		Conversation conversation = mXmppConnectionService.find(account, counterpart.asBareJid());
740		if (conversation != null && (query == null || query.isCatchup())) {
741			mXmppConnectionService.markRead(conversation); //TODO only mark messages read that are older than timestamp
742		}
743	}
744
745	private static Jid getTrueCounterpart(Element mucUserElement, Jid fallback) {
746		final Element item = mucUserElement == null ? null : mucUserElement.findChild("item");
747		Jid result = item == null ? null : item.getAttributeAsJid("jid");
748		return result != null ? result : fallback;
749	}
750
751	private void processMessageReceipts(Account account, MessagePacket packet, MessageArchiveService.Query query) {
752		final boolean markable = packet.hasChild("markable", "urn:xmpp:chat-markers:0");
753		final boolean request = packet.hasChild("request", "urn:xmpp:receipts");
754		if (query == null) {
755			final ArrayList<String> receiptsNamespaces = new ArrayList<>();
756			if (markable) {
757				receiptsNamespaces.add("urn:xmpp:chat-markers:0");
758			}
759			if (request) {
760				receiptsNamespaces.add("urn:xmpp:receipts");
761			}
762			if (receiptsNamespaces.size() > 0) {
763				MessagePacket receipt = mXmppConnectionService.getMessageGenerator().received(account,
764						packet,
765						receiptsNamespaces,
766						packet.getType());
767				mXmppConnectionService.sendMessagePacket(account, receipt);
768			}
769		} else {
770			if (request) {
771				query.pendingReceiptRequests.add(new ReceiptRequest(packet.getFrom(),packet.getId()));
772			}
773		}
774	}
775
776	private static final SimpleDateFormat TIME_FORMAT = new SimpleDateFormat("HH:mm:ss", Locale.ENGLISH);
777
778	private void activateGracePeriod(Account account) {
779		long duration = mXmppConnectionService.getLongPreference("grace_period_length", R.integer.grace_period) * 1000;
780		Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": activating grace period till " + TIME_FORMAT.format(new Date(System.currentTimeMillis() + duration)));
781		account.activateGracePeriod(duration);
782	}
783}