1package eu.siacs.conversations.parser;
  2
  3import android.util.Log;
  4import android.util.Pair;
  5
  6import java.net.URL;
  7import java.text.SimpleDateFormat;
  8import java.util.ArrayList;
  9import java.util.Arrays;
 10import java.util.Collections;
 11import java.util.Date;
 12import java.util.List;
 13import java.util.Locale;
 14import java.util.Set;
 15import java.util.UUID;
 16
 17import eu.siacs.conversations.Config;
 18import eu.siacs.conversations.R;
 19import eu.siacs.conversations.crypto.axolotl.AxolotlService;
 20import eu.siacs.conversations.crypto.axolotl.NotEncryptedForThisDeviceException;
 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.ReadByMarker;
 29import eu.siacs.conversations.entities.ReceiptRequest;
 30import eu.siacs.conversations.http.HttpConnectionManager;
 31import eu.siacs.conversations.http.P1S3UrlStreamHandler;
 32import eu.siacs.conversations.services.MessageArchiveService;
 33import eu.siacs.conversations.services.XmppConnectionService;
 34import eu.siacs.conversations.utils.CryptoHelper;
 35import eu.siacs.conversations.xml.Namespace;
 36import eu.siacs.conversations.xml.Element;
 37import eu.siacs.conversations.xmpp.InvalidJid;
 38import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
 39import eu.siacs.conversations.xmpp.chatstate.ChatState;
 40import eu.siacs.conversations.xmpp.pep.Avatar;
 41import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
 42import rocks.xmpp.addr.Jid;
 43
 44public class MessageParser extends AbstractParser implements OnMessagePacketReceived {
 45
 46	private static final SimpleDateFormat TIME_FORMAT = new SimpleDateFormat("HH:mm:ss", Locale.ENGLISH);
 47
 48	public MessageParser(XmppConnectionService service) {
 49		super(service);
 50	}
 51
 52	private static String extractStanzaId(Element packet, boolean isTypeGroupChat, Conversation conversation) {
 53		final Jid by;
 54		final boolean safeToExtract;
 55		if (isTypeGroupChat) {
 56			by = conversation.getJid().asBareJid();
 57			safeToExtract = conversation.getMucOptions().hasFeature(Namespace.STANZA_IDS);
 58		} else {
 59			Account account = conversation.getAccount();
 60			by = account.getJid().asBareJid();
 61			safeToExtract = account.getXmppConnection().getFeatures().stanzaIds();
 62		}
 63		return safeToExtract ? extractStanzaId(packet, by) : null;
 64	}
 65
 66	private static String extractStanzaId(Element packet, Jid by) {
 67		for (Element child : packet.getChildren()) {
 68			if (child.getName().equals("stanza-id")
 69					&& Namespace.STANZA_IDS.equals(child.getNamespace())
 70					&& by.equals(InvalidJid.getNullForInvalid(child.getAttributeAsJid("by")))) {
 71				return child.getAttribute("id");
 72			}
 73		}
 74		return null;
 75	}
 76
 77	private static Jid getTrueCounterpart(Element mucUserElement, Jid fallback) {
 78		final Element item = mucUserElement == null ? null : mucUserElement.findChild("item");
 79		Jid result = item == null ? null : InvalidJid.getNullForInvalid(item.getAttributeAsJid("jid"));
 80		return result != null ? result : fallback;
 81	}
 82
 83	private boolean extractChatState(Conversation c, final boolean isTypeGroupChat, final MessagePacket packet) {
 84		ChatState state = ChatState.parse(packet);
 85		if (state != null && c != null) {
 86			final Account account = c.getAccount();
 87			Jid from = packet.getFrom();
 88			if (from.asBareJid().equals(account.getJid().asBareJid())) {
 89				c.setOutgoingChatState(state);
 90				if (state == ChatState.ACTIVE || state == ChatState.COMPOSING) {
 91					mXmppConnectionService.markRead(c);
 92					activateGracePeriod(account);
 93				}
 94				return false;
 95			} else {
 96				if (isTypeGroupChat) {
 97					MucOptions.User user = c.getMucOptions().findUserByFullJid(from);
 98					if (user != null) {
 99						return user.setChatState(state);
100					} else {
101						return false;
102					}
103				} else {
104					return c.setIncomingChatState(state);
105				}
106			}
107		}
108		return false;
109	}
110
111	private Message parseAxolotlChat(Element axolotlMessage, Jid from, Conversation conversation, int status, boolean postpone) {
112		final AxolotlService service = conversation.getAccount().getAxolotlService();
113		final XmppAxolotlMessage xmppAxolotlMessage;
114		try {
115			xmppAxolotlMessage = XmppAxolotlMessage.fromElement(axolotlMessage, from.asBareJid());
116		} catch (Exception e) {
117			Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": invalid omemo message received " + e.getMessage());
118			return null;
119		}
120		if (xmppAxolotlMessage.hasPayload()) {
121			final XmppAxolotlMessage.XmppAxolotlPlaintextMessage plaintextMessage;
122			try {
123				plaintextMessage = service.processReceivingPayloadMessage(xmppAxolotlMessage, postpone);
124			} catch (NotEncryptedForThisDeviceException e) {
125				return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE, status);
126			}
127			if (plaintextMessage != null) {
128				Message finishedMessage = new Message(conversation, plaintextMessage.getPlaintext(), Message.ENCRYPTION_AXOLOTL, status);
129				finishedMessage.setFingerprint(plaintextMessage.getFingerprint());
130				Log.d(Config.LOGTAG, AxolotlService.getLogprefix(finishedMessage.getConversation().getAccount()) + " Received Message with session fingerprint: " + plaintextMessage.getFingerprint());
131				return finishedMessage;
132			}
133		} else {
134			Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": received OMEMO key transport message");
135			service.processReceivingKeyTransportMessage(xmppAxolotlMessage, postpone);
136		}
137		return null;
138	}
139
140	private Invite extractInvite(Account account, Element message) {
141		Element x = message.findChild("x", "http://jabber.org/protocol/muc#user");
142		if (x != null) {
143			Element invite = x.findChild("invite");
144			if (invite != null) {
145				String password = x.findChildContent("password");
146				Jid from = InvalidJid.getNullForInvalid(invite.getAttributeAsJid("from"));
147				Contact contact = from == null ? null : account.getRoster().getContact(from);
148				Jid room = InvalidJid.getNullForInvalid(message.getAttributeAsJid("from"));
149				if (room == null) {
150					return null;
151				}
152				return new Invite(room, password, contact);
153			}
154		} else {
155			x = message.findChild("x", "jabber:x:conference");
156			if (x != null) {
157				Jid from = InvalidJid.getNullForInvalid(message.getAttributeAsJid("from"));
158				Contact contact = from == null ? null : account.getRoster().getContact(from);
159				Jid room = InvalidJid.getNullForInvalid(x.getAttributeAsJid("jid"));
160				if (room == null) {
161					return null;
162				}
163				return new Invite(room, x.getAttribute("password"), contact);
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						if (contact.setAvatar(avatar)) {
187							mXmppConnectionService.syncRoster(account);
188							mXmppConnectionService.getAvatarService().clear(contact);
189							mXmppConnectionService.updateConversationUi();
190							mXmppConnectionService.updateRosterUi();
191						}
192					}
193				} else if (mXmppConnectionService.isDataSaverDisabled()) {
194					mXmppConnectionService.fetchAvatar(account, avatar);
195				}
196			}
197		} else if ("http://jabber.org/protocol/nick".equals(node)) {
198			final Element i = items.findChild("item");
199			final String nick = i == null ? null : i.findChildContent("nick", Namespace.NICK);
200			if (nick != null) {
201				Contact contact = account.getRoster().getContact(from);
202				if (contact.setPresenceName(nick)) {
203					mXmppConnectionService.getAvatarService().clear(contact);
204				}
205				mXmppConnectionService.updateConversationUi();
206				mXmppConnectionService.updateAccountUi();
207			}
208		} else if (AxolotlService.PEP_DEVICE_LIST.equals(node)) {
209			Element item = items.findChild("item");
210			Set<Integer> deviceIds = mXmppConnectionService.getIqParser().deviceIds(item);
211			Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account) + "Received PEP device list " + deviceIds + " update from " + from + ", processing... ");
212			AxolotlService axolotlService = account.getAxolotlService();
213			axolotlService.registerDevices(from, deviceIds);
214			mXmppConnectionService.updateAccountUi();
215		}
216	}
217
218	private boolean handleErrorMessage(Account account, MessagePacket packet) {
219		if (packet.getType() == MessagePacket.TYPE_ERROR) {
220			Jid from = packet.getFrom();
221			if (from != null) {
222				Message message = mXmppConnectionService.markMessage(account,
223						from.asBareJid(),
224						packet.getId(),
225						Message.STATUS_SEND_FAILED,
226						extractErrorMessage(packet));
227			}
228			return true;
229		}
230		return false;
231	}
232
233	@Override
234	public void onMessagePacketReceived(Account account, MessagePacket original) {
235		if (handleErrorMessage(account, original)) {
236			return;
237		}
238		final MessagePacket packet;
239		Long timestamp = null;
240		boolean isCarbon = false;
241		String serverMsgId = null;
242		final Element fin = original.findChild("fin", Namespace.MAM_LEGACY);
243		if (fin != null) {
244			mXmppConnectionService.getMessageArchiveService().processFinLegacy(fin, original.getFrom());
245			return;
246		}
247		final boolean mamLegacy = original.hasChild("result", Namespace.MAM_LEGACY);
248		final Element result = original.findChild("result", mamLegacy ? Namespace.MAM_LEGACY : Namespace.MAM);
249		final MessageArchiveService.Query query = result == null ? null : mXmppConnectionService.getMessageArchiveService().findQuery(result.getAttribute("queryid"));
250		if (query != null && query.validFrom(original.getFrom())) {
251			Pair<MessagePacket, Long> f = original.getForwardedMessagePacket("result", mamLegacy ? Namespace.MAM_LEGACY : Namespace.MAM);
252			if (f == null) {
253				return;
254			}
255			timestamp = f.second;
256			packet = f.first;
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		} else {
273			packet = original;
274		}
275
276		if (timestamp == null) {
277			timestamp = AbstractParser.parseTimestamp(original, AbstractParser.parseTimestamp(packet));
278		}
279		final String body = packet.getBody();
280		final Element mucUserElement = packet.findChild("x", "http://jabber.org/protocol/muc#user");
281		final String pgpEncrypted = packet.findChildContent("x", "jabber:x:encrypted");
282		final Element replaceElement = packet.findChild("replace", "urn:xmpp:message-correct:0");
283		final Element oob = packet.findChild("x", Namespace.OOB);
284		final Element xP1S3 = packet.findChild("x", Namespace.P1_S3_FILE_TRANSFER);
285		final URL xP1S3url = xP1S3 == null ? null : P1S3UrlStreamHandler.of(xP1S3);
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 || !InvalidJid.isValid(from) || !InvalidJid.isValid(to)) {
303			Log.e(Config.LOGTAG, "encountered invalid message from='" + from + "' to='" + to + "'");
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 isMucStatusMessage = InvalidJid.hasValidFrom(packet) && from.isBareJid() && mucUserElement != null && mucUserElement.hasChild("status");
313		boolean selfAddressed;
314		if (packet.fromAccount(account)) {
315			status = Message.STATUS_SEND;
316			selfAddressed = to == null || account.getJid().asBareJid().equals(to.asBareJid());
317			if (selfAddressed) {
318				counterpart = from;
319			} else {
320				counterpart = to != null ? to : account.getJid();
321			}
322		} else {
323			status = Message.STATUS_RECEIVED;
324			counterpart = from;
325			selfAddressed = false;
326		}
327
328		Invite invite = extractInvite(account, packet);
329		if (invite != null && invite.execute(account)) {
330			return;
331		}
332
333		if ((body != null || pgpEncrypted != null || (axolotlEncrypted != null && axolotlEncrypted.hasChild("payload")) || oobUrl != null || xP1S3 != null) && !isMucStatusMessage) {
334			final boolean conversationIsProbablyMuc = isTypeGroupChat || mucUserElement != null || account.getXmppConnection().getMucServersWithholdAccount().contains(counterpart.getDomain());
335			final Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), conversationIsProbablyMuc, 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 (xP1S3url != null) {
372				message = new Message(conversation, xP1S3url.toString(), Message.ENCRYPTION_NONE, status);
373				message.setOob(true);
374				if (CryptoHelper.isPgpEncryptedUrl(xP1S3url.toString())) {
375					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
376				}
377			} else if (pgpEncrypted != null && Config.supportOpenPgp()) {
378				message = new Message(conversation, pgpEncrypted, Message.ENCRYPTION_PGP, status);
379			} else if (axolotlEncrypted != null && Config.supportOmemo()) {
380				Jid origin;
381				Set<Jid> fallbacksBySourceId = Collections.emptySet();
382				if (conversationMultiMode) {
383					final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
384					origin = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
385					if (origin == null) {
386						try {
387							fallbacksBySourceId = account.getAxolotlService().findCounterpartsBySourceId(XmppAxolotlMessage.parseSourceId(axolotlEncrypted));
388						} catch (IllegalArgumentException e) {
389							//ignoring
390						}
391					}
392					if (origin == null && fallbacksBySourceId.size() == 0) {
393						Log.d(Config.LOGTAG, "axolotl message in anonymous conference received and no possible fallbacks");
394						return;
395					}
396				} else {
397					fallbacksBySourceId = Collections.emptySet();
398					origin = from;
399				}
400				if (origin != null) {
401					message = parseAxolotlChat(axolotlEncrypted, origin, conversation, status, query != null);
402				} else {
403					Message trial = null;
404					for (Jid fallback : fallbacksBySourceId) {
405						trial = parseAxolotlChat(axolotlEncrypted, fallback, conversation, status, query != null);
406						if (trial != null) {
407							Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": decoded muc message using fallback");
408							origin = fallback;
409							break;
410						}
411					}
412					message = trial;
413				}
414				if (message == null) {
415					if (query == null && extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet)) {
416						mXmppConnectionService.updateConversationUi();
417					}
418					if (query != null && status == Message.STATUS_SEND && remoteMsgId != null) {
419						Message previouslySent = conversation.findSentMessageWithUuid(remoteMsgId);
420						if (previouslySent != null && previouslySent.getServerMsgId() == null && serverMsgId != null) {
421							previouslySent.setServerMsgId(serverMsgId);
422							mXmppConnectionService.databaseBackend.updateMessage(previouslySent, false);
423							Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": encountered previously sent OMEMO message without serverId. updating...");
424						}
425					}
426					return;
427				}
428				if (conversationMultiMode) {
429					message.setTrueCounterpart(origin);
430				}
431			} else if (body == null && oobUrl != null) {
432				message = new Message(conversation, oobUrl, Message.ENCRYPTION_NONE, status);
433				message.setOob(true);
434				if (CryptoHelper.isPgpEncryptedUrl(oobUrl)) {
435					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
436				}
437			} else {
438				message = new Message(conversation, body, Message.ENCRYPTION_NONE, status);
439			}
440
441			message.setCounterpart(counterpart);
442			message.setRemoteMsgId(remoteMsgId);
443			message.setServerMsgId(serverMsgId);
444			message.setCarbon(isCarbon);
445			message.setTime(timestamp);
446			if (body != null && body.equals(oobUrl)) {
447				message.setOob(true);
448				if (CryptoHelper.isPgpEncryptedUrl(oobUrl)) {
449					message.setEncryption(Message.ENCRYPTION_DECRYPTED);
450				}
451			}
452			message.markable = packet.hasChild("markable", "urn:xmpp:chat-markers:0");
453			if (conversationMultiMode) {
454				message.setMucUser(conversation.getMucOptions().findUserByFullJid(counterpart));
455				final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
456				Jid trueCounterpart;
457				if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
458					trueCounterpart = message.getTrueCounterpart();
459				} else if (query != null && query.safeToExtractTrueCounterpart()) {
460					trueCounterpart = getTrueCounterpart(mucUserElement, fallback);
461				} else {
462					trueCounterpart = fallback;
463				}
464				if (trueCounterpart != null && trueCounterpart.asBareJid().equals(account.getJid().asBareJid())) {
465					status = isTypeGroupChat ? Message.STATUS_SEND_RECEIVED : Message.STATUS_SEND;
466				}
467				message.setStatus(status);
468				message.setTrueCounterpart(trueCounterpart);
469				if (!isTypeGroupChat) {
470					message.setType(Message.TYPE_PRIVATE);
471				}
472			} else {
473				updateLastseen(account, from);
474			}
475
476			if (replacementId != null && mXmppConnectionService.allowMessageCorrection()) {
477				final Message replacedMessage = conversation.findMessageWithRemoteIdAndCounterpart(replacementId,
478						counterpart,
479						message.getStatus() == Message.STATUS_RECEIVED,
480						message.isCarbon());
481				if (replacedMessage != null) {
482					final boolean fingerprintsMatch = replacedMessage.getFingerprint() == null
483							|| replacedMessage.getFingerprint().equals(message.getFingerprint());
484					final boolean trueCountersMatch = replacedMessage.getTrueCounterpart() != null
485							&& replacedMessage.getTrueCounterpart().equals(message.getTrueCounterpart());
486					final boolean mucUserMatches = query == null && replacedMessage.sameMucUser(message); //can not be checked when using mam
487					final boolean duplicate = conversation.hasDuplicateMessage(message);
488					if (fingerprintsMatch && (trueCountersMatch || !conversationMultiMode || mucUserMatches) && !duplicate) {
489						Log.d(Config.LOGTAG, "replaced message '" + replacedMessage.getBody() + "' with '" + message.getBody() + "'");
490						synchronized (replacedMessage) {
491							final String uuid = replacedMessage.getUuid();
492							replacedMessage.setUuid(UUID.randomUUID().toString());
493							replacedMessage.setBody(message.getBody());
494							replacedMessage.setEdited(replacedMessage.getRemoteMsgId());
495							replacedMessage.setRemoteMsgId(remoteMsgId);
496							if (replacedMessage.getServerMsgId() == null || message.getServerMsgId() != null) {
497								replacedMessage.setServerMsgId(message.getServerMsgId());
498							}
499							replacedMessage.setEncryption(message.getEncryption());
500							if (replacedMessage.getStatus() == Message.STATUS_RECEIVED) {
501								replacedMessage.markUnread();
502							}
503							extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet);
504							mXmppConnectionService.updateMessage(replacedMessage, uuid);
505							mXmppConnectionService.getNotificationService().updateNotification(false);
506							if (mXmppConnectionService.confirmMessages()
507									&& replacedMessage.getStatus() == Message.STATUS_RECEIVED
508									&& (replacedMessage.trusted() || replacedMessage.getType() == Message.TYPE_PRIVATE)
509									&& remoteMsgId != null
510									&& !selfAddressed
511									&& !isTypeGroupChat) {
512								processMessageReceipts(account, packet, query);
513							}
514							if (replacedMessage.getEncryption() == Message.ENCRYPTION_PGP) {
515								conversation.getAccount().getPgpDecryptionService().discard(replacedMessage);
516								conversation.getAccount().getPgpDecryptionService().decrypt(replacedMessage, false);
517							}
518						}
519						return;
520					} else {
521						Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received message correction but verification didn't check out");
522					}
523				}
524			}
525
526			long deletionDate = mXmppConnectionService.getAutomaticMessageDeletionDate();
527			if (deletionDate != 0 && message.getTimeSent() < deletionDate) {
528				Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": skipping message from " + message.getCounterpart().toString() + " because it was sent prior to our deletion date");
529				return;
530			}
531
532			boolean checkForDuplicates = (isTypeGroupChat && packet.hasChild("delay", "urn:xmpp:delay"))
533					|| message.getType() == Message.TYPE_PRIVATE
534					|| message.getServerMsgId() != null
535					|| (query == null && mXmppConnectionService.getMessageArchiveService().isCatchupInProgress(conversation));
536			if (checkForDuplicates) {
537				final Message duplicate = conversation.findDuplicateMessage(message);
538				if (duplicate != null) {
539					final boolean serverMsgIdUpdated;
540					if (duplicate.getStatus() != Message.STATUS_RECEIVED
541							&& duplicate.getUuid().equals(message.getRemoteMsgId())
542							&& duplicate.getServerMsgId() == null
543							&& message.getServerMsgId() != null) {
544						duplicate.setServerMsgId(message.getServerMsgId());
545						if (mXmppConnectionService.databaseBackend.updateMessage(duplicate, false)) {
546							serverMsgIdUpdated = true;
547						} else {
548							serverMsgIdUpdated = false;
549							Log.e(Config.LOGTAG,"failed to update message");
550						}
551					} else {
552						serverMsgIdUpdated = false;
553					}
554					Log.d(Config.LOGTAG, "skipping duplicate message with " + message.getCounterpart() + ". serverMsgIdUpdated=" + Boolean.toString(serverMsgIdUpdated));
555					return;
556				}
557			}
558
559			if (query != null && query.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) {
560				conversation.prepend(query.getActualInThisQuery(), message);
561			} else {
562				conversation.add(message);
563			}
564			if (query != null) {
565				query.incrementActualMessageCount();
566			}
567
568			if (query == null || query.isCatchup()) { //either no mam or catchup
569				if (status == Message.STATUS_SEND || status == Message.STATUS_SEND_RECEIVED) {
570					mXmppConnectionService.markRead(conversation);
571					if (query == null) {
572						activateGracePeriod(account);
573					}
574				} else {
575					message.markUnread();
576					notify = true;
577				}
578			}
579
580			if (message.getEncryption() == Message.ENCRYPTION_PGP) {
581				notify = conversation.getAccount().getPgpDecryptionService().decrypt(message, notify);
582			} else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE) {
583				notify = false;
584			}
585
586			if (query == null) {
587				extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet);
588				mXmppConnectionService.updateConversationUi();
589			}
590
591			if (mXmppConnectionService.confirmMessages()
592					&& message.getStatus() == Message.STATUS_RECEIVED
593					&& (message.trusted() || message.getType() == Message.TYPE_PRIVATE)
594					&& remoteMsgId != null
595					&& !selfAddressed
596					&& !isTypeGroupChat) {
597				processMessageReceipts(account, packet, query);
598			}
599
600			mXmppConnectionService.databaseBackend.createMessage(message);
601			final HttpConnectionManager manager = this.mXmppConnectionService.getHttpConnectionManager();
602			if (message.trusted() && message.treatAsDownloadable() && manager.getAutoAcceptFileSize() > 0) {
603				manager.createNewDownloadConnection(message);
604			} else if (notify) {
605				if (query != null && query.isCatchup()) {
606					mXmppConnectionService.getNotificationService().pushFromBacklog(message);
607				} else {
608					mXmppConnectionService.getNotificationService().push(message);
609				}
610			}
611		} else if (!packet.hasChild("body")) { //no body
612
613			final Conversation conversation = mXmppConnectionService.find(account, from.asBareJid());
614			if (axolotlEncrypted != null) {
615				Jid origin;
616				if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
617					final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
618					origin = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
619					if (origin == null) {
620						Log.d(Config.LOGTAG, "omemo key transport message in anonymous conference received");
621						return;
622					}
623				} else if (isTypeGroupChat) {
624					return;
625				} else {
626					origin = from;
627				}
628				try {
629					final XmppAxolotlMessage xmppAxolotlMessage = XmppAxolotlMessage.fromElement(axolotlEncrypted, origin.asBareJid());
630					account.getAxolotlService().processReceivingKeyTransportMessage(xmppAxolotlMessage, query != null);
631					Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": omemo key transport message received from " + origin);
632				} catch (Exception e) {
633					Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": invalid omemo key transport message received " + e.getMessage());
634					return;
635				}
636			}
637
638			if (query == null && extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet)) {
639				mXmppConnectionService.updateConversationUi();
640			}
641
642			if (isTypeGroupChat) {
643				if (packet.hasChild("subject")) {
644					if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
645						conversation.setHasMessagesLeftOnServer(conversation.countMessages() > 0);
646						String subject = packet.findInternationalizedChildContent("subject");
647						if (conversation.getMucOptions().setSubject(subject)) {
648							mXmppConnectionService.updateConversation(conversation);
649						}
650						mXmppConnectionService.updateConversationUi();
651						return;
652					}
653				}
654			}
655			if (conversation != null && mucUserElement != null && InvalidJid.hasValidFrom(packet) && from.isBareJid()) {
656				for (Element child : mucUserElement.getChildren()) {
657					if ("status".equals(child.getName())) {
658						try {
659							int code = Integer.parseInt(child.getAttribute("code"));
660							if ((code >= 170 && code <= 174) || (code >= 102 && code <= 104)) {
661								mXmppConnectionService.fetchConferenceConfiguration(conversation);
662								break;
663							}
664						} catch (Exception e) {
665							//ignored
666						}
667					} else if ("item".equals(child.getName())) {
668						MucOptions.User user = AbstractParser.parseItem(conversation, child);
669						Log.d(Config.LOGTAG, account.getJid() + ": changing affiliation for "
670								+ user.getRealJid() + " to " + user.getAffiliation() + " in "
671								+ conversation.getJid().asBareJid());
672						if (!user.realJidMatchesAccount()) {
673							boolean isNew = conversation.getMucOptions().updateUser(user);
674							mXmppConnectionService.getAvatarService().clear(conversation);
675							mXmppConnectionService.updateMucRosterUi();
676							mXmppConnectionService.updateConversationUi();
677							Contact contact = user.getContact();
678							if (!user.getAffiliation().ranks(MucOptions.Affiliation.MEMBER)) {
679								Jid jid = user.getRealJid();
680								List<Jid> cryptoTargets = conversation.getAcceptedCryptoTargets();
681								if (cryptoTargets.remove(user.getRealJid())) {
682									Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": removed " + jid + " from crypto targets of " + conversation.getName());
683									conversation.setAcceptedCryptoTargets(cryptoTargets);
684									mXmppConnectionService.updateConversation(conversation);
685								}
686							} else if (isNew
687									&& user.getRealJid() != null
688									&& conversation.getMucOptions().isPrivateAndNonAnonymous()
689									&& (contact == null || !contact.mutualPresenceSubscription())
690									&& account.getAxolotlService().hasEmptyDeviceList(user.getRealJid())) {
691								account.getAxolotlService().fetchDeviceIds(user.getRealJid());
692							}
693						}
694					}
695				}
696			}
697		}
698
699		Element received = packet.findChild("received", "urn:xmpp:chat-markers:0");
700		if (received == null) {
701			received = packet.findChild("received", "urn:xmpp:receipts");
702		}
703		if (received != null) {
704			String id = received.getAttribute("id");
705			if (packet.fromAccount(account)) {
706				if (query != null && id != null && packet.getTo() != null) {
707					query.removePendingReceiptRequest(new ReceiptRequest(packet.getTo(), id));
708				}
709			} else {
710				mXmppConnectionService.markMessage(account, from.asBareJid(), received.getAttribute("id"), Message.STATUS_SEND_RECEIVED);
711			}
712		}
713		Element displayed = packet.findChild("displayed", "urn:xmpp:chat-markers:0");
714		if (displayed != null) {
715			final String id = displayed.getAttribute("id");
716			final Jid sender = InvalidJid.getNullForInvalid(displayed.getAttributeAsJid("sender"));
717			if (packet.fromAccount(account) && !selfAddressed) {
718				dismissNotification(account, counterpart, query);
719			} else if (isTypeGroupChat) {
720				Conversation conversation = mXmppConnectionService.find(account, counterpart.asBareJid());
721				if (conversation != null && id != null && sender != null) {
722					Message message = conversation.findMessageWithRemoteId(id, sender);
723					if (message != null) {
724						final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
725						final Jid trueJid = getTrueCounterpart((query != null && query.safeToExtractTrueCounterpart()) ? mucUserElement : null, fallback);
726						final boolean trueJidMatchesAccount = account.getJid().asBareJid().equals(trueJid == null ? null : trueJid.asBareJid());
727						if (trueJidMatchesAccount || conversation.getMucOptions().isSelf(counterpart)) {
728							if (!message.isRead() && (query == null || query.isCatchup())) { //checking if message is unread fixes race conditions with reflections
729								mXmppConnectionService.markRead(conversation);
730							}
731						} else if (!counterpart.isBareJid() && trueJid != null) {
732							ReadByMarker readByMarker = ReadByMarker.from(counterpart, trueJid);
733							if (message.addReadByMarker(readByMarker)) {
734								Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": added read by (" + readByMarker.getRealJid() + ") to message '" + message.getBody() + "'");
735								mXmppConnectionService.updateMessage(message, false);
736							}
737						}
738					}
739				}
740			} else {
741				final Message displayedMessage = mXmppConnectionService.markMessage(account, from.asBareJid(), id, Message.STATUS_SEND_DISPLAYED);
742				Message message = displayedMessage == null ? null : displayedMessage.prev();
743				while (message != null
744						&& message.getStatus() == Message.STATUS_SEND_RECEIVED
745						&& message.getTimeSent() < displayedMessage.getTimeSent()) {
746					mXmppConnectionService.markMessage(message, Message.STATUS_SEND_DISPLAYED);
747					message = message.prev();
748				}
749				if (displayedMessage != null && selfAddressed) {
750					dismissNotification(account, counterpart, query);
751				}
752			}
753		}
754
755		Element event = original.findChild("event", "http://jabber.org/protocol/pubsub#event");
756		if (event != null && InvalidJid.hasValidFrom(original)) {
757			parseEvent(event, original.getFrom(), account);
758		}
759
760		final String nick = packet.findChildContent("nick", Namespace.NICK);
761		if (nick != null && InvalidJid.hasValidFrom(original)) {
762			Contact contact = account.getRoster().getContact(from);
763			if (contact.setPresenceName(nick)) {
764				mXmppConnectionService.getAvatarService().clear(contact);
765			}
766		}
767	}
768
769	private void dismissNotification(Account account, Jid counterpart, MessageArchiveService.Query query) {
770		Conversation conversation = mXmppConnectionService.find(account, counterpart.asBareJid());
771		if (conversation != null && (query == null || query.isCatchup())) {
772			mXmppConnectionService.markRead(conversation); //TODO only mark messages read that are older than timestamp
773		}
774	}
775
776	private void processMessageReceipts(Account account, MessagePacket packet, MessageArchiveService.Query query) {
777		final boolean markable = packet.hasChild("markable", "urn:xmpp:chat-markers:0");
778		final boolean request = packet.hasChild("request", "urn:xmpp:receipts");
779		if (query == null) {
780			final ArrayList<String> receiptsNamespaces = new ArrayList<>();
781			if (markable) {
782				receiptsNamespaces.add("urn:xmpp:chat-markers:0");
783			}
784			if (request) {
785				receiptsNamespaces.add("urn:xmpp:receipts");
786			}
787			if (receiptsNamespaces.size() > 0) {
788				MessagePacket receipt = mXmppConnectionService.getMessageGenerator().received(account,
789						packet,
790						receiptsNamespaces,
791						packet.getType());
792				mXmppConnectionService.sendMessagePacket(account, receipt);
793			}
794		} else if (query.isCatchup()) {
795			if (request) {
796				query.addPendingReceiptRequest(new ReceiptRequest(packet.getFrom(), packet.getId()));
797			}
798		}
799	}
800
801	private void activateGracePeriod(Account account) {
802		long duration = mXmppConnectionService.getLongPreference("grace_period_length", R.integer.grace_period) * 1000;
803		Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": activating grace period till " + TIME_FORMAT.format(new Date(System.currentTimeMillis() + duration)));
804		account.activateGracePeriod(duration);
805	}
806
807	private class Invite {
808		final Jid jid;
809		final String password;
810		final Contact inviter;
811
812		Invite(Jid jid, String password, Contact inviter) {
813			this.jid = jid;
814			this.password = password;
815			this.inviter = inviter;
816		}
817
818		public boolean execute(Account account) {
819			if (jid != null) {
820				Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, jid, true, false);
821				if (!conversation.getMucOptions().online()) {
822					conversation.getMucOptions().setPassword(password);
823					mXmppConnectionService.databaseBackend.updateConversation(conversation);
824					mXmppConnectionService.joinMuc(conversation, inviter != null && inviter.mutualPresenceSubscription());
825					mXmppConnectionService.updateConversationUi();
826				}
827				return true;
828			}
829			return false;
830		}
831	}
832}