MessageParser.java

   1package eu.siacs.conversations.parser;
   2
   3import android.util.Log;
   4import android.util.Pair;
   5
   6import com.google.common.collect.ImmutableSet;
   7
   8import java.text.SimpleDateFormat;
   9import java.util.ArrayList;
  10import java.util.Arrays;
  11import java.util.Collections;
  12import java.util.Date;
  13import java.util.List;
  14import java.util.Locale;
  15import java.util.Map;
  16import java.util.Set;
  17import java.util.UUID;
  18import java.util.function.Consumer;
  19
  20import eu.siacs.conversations.AppSettings;
  21import eu.siacs.conversations.Config;
  22import eu.siacs.conversations.R;
  23import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  24import eu.siacs.conversations.crypto.axolotl.BrokenSessionException;
  25import eu.siacs.conversations.crypto.axolotl.NotEncryptedForThisDeviceException;
  26import eu.siacs.conversations.crypto.axolotl.OutdatedSenderException;
  27import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage;
  28import eu.siacs.conversations.entities.Account;
  29import eu.siacs.conversations.entities.Bookmark;
  30import eu.siacs.conversations.entities.Contact;
  31import eu.siacs.conversations.entities.Conversation;
  32import eu.siacs.conversations.entities.Conversational;
  33import eu.siacs.conversations.entities.Message;
  34import eu.siacs.conversations.entities.MucOptions;
  35import eu.siacs.conversations.entities.ReadByMarker;
  36import eu.siacs.conversations.entities.ReceiptRequest;
  37import eu.siacs.conversations.entities.RtpSessionStatus;
  38import eu.siacs.conversations.http.HttpConnectionManager;
  39import eu.siacs.conversations.services.MessageArchiveService;
  40import eu.siacs.conversations.services.QuickConversationsService;
  41import eu.siacs.conversations.services.XmppConnectionService;
  42import eu.siacs.conversations.utils.CryptoHelper;
  43import eu.siacs.conversations.xml.Element;
  44import eu.siacs.conversations.xml.LocalizedContent;
  45import eu.siacs.conversations.xml.Namespace;
  46import eu.siacs.conversations.xmpp.InvalidJid;
  47import eu.siacs.conversations.xmpp.Jid;
  48import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  49import eu.siacs.conversations.xmpp.chatstate.ChatState;
  50import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  51import eu.siacs.conversations.xmpp.jingle.JingleRtpConnection;
  52import eu.siacs.conversations.xmpp.pep.Avatar;
  53import im.conversations.android.xmpp.model.Extension;
  54import im.conversations.android.xmpp.model.carbons.Received;
  55import im.conversations.android.xmpp.model.carbons.Sent;
  56import im.conversations.android.xmpp.model.forward.Forwarded;
  57
  58public class MessageParser extends AbstractParser implements Consumer<im.conversations.android.xmpp.model.stanza.Message> {
  59
  60    private static final SimpleDateFormat TIME_FORMAT = new SimpleDateFormat("HH:mm:ss", Locale.ENGLISH);
  61
  62    private static final List<String> JINGLE_MESSAGE_ELEMENT_NAMES =
  63            Arrays.asList("accept", "propose", "proceed", "reject", "retract", "ringing", "finish");
  64
  65    public MessageParser(final XmppConnectionService service, final Account account) {
  66        super(service, account);
  67    }
  68
  69    private static String extractStanzaId(Element packet, boolean isTypeGroupChat, Conversation conversation) {
  70        final Jid by;
  71        final boolean safeToExtract;
  72        if (isTypeGroupChat) {
  73            by = conversation.getJid().asBareJid();
  74            safeToExtract = conversation.getMucOptions().hasFeature(Namespace.STANZA_IDS);
  75        } else {
  76            Account account = conversation.getAccount();
  77            by = account.getJid().asBareJid();
  78            safeToExtract = account.getXmppConnection().getFeatures().stanzaIds();
  79        }
  80        return safeToExtract ? extractStanzaId(packet, by) : null;
  81    }
  82
  83    private static String extractStanzaId(Account account, Element packet) {
  84        final boolean safeToExtract = account.getXmppConnection().getFeatures().stanzaIds();
  85        return safeToExtract ? extractStanzaId(packet, account.getJid().asBareJid()) : null;
  86    }
  87
  88    private static String extractStanzaId(Element packet, Jid by) {
  89        for (Element child : packet.getChildren()) {
  90            if (child.getName().equals("stanza-id")
  91                    && Namespace.STANZA_IDS.equals(child.getNamespace())
  92                    && by.equals(InvalidJid.getNullForInvalid(child.getAttributeAsJid("by")))) {
  93                return child.getAttribute("id");
  94            }
  95        }
  96        return null;
  97    }
  98
  99    private static Jid getTrueCounterpart(Element mucUserElement, Jid fallback) {
 100        final Element item = mucUserElement == null ? null : mucUserElement.findChild("item");
 101        Jid result = item == null ? null : InvalidJid.getNullForInvalid(item.getAttributeAsJid("jid"));
 102        return result != null ? result : fallback;
 103    }
 104
 105    private boolean extractChatState(Conversation c, final boolean isTypeGroupChat, final im.conversations.android.xmpp.model.stanza.Message packet) {
 106        ChatState state = ChatState.parse(packet);
 107        if (state != null && c != null) {
 108            final Account account = c.getAccount();
 109            final Jid from = packet.getFrom();
 110            if (from.asBareJid().equals(account.getJid().asBareJid())) {
 111                c.setOutgoingChatState(state);
 112                if (state == ChatState.ACTIVE || state == ChatState.COMPOSING) {
 113                    if (c.getContact().isSelf()) {
 114                        return false;
 115                    }
 116                    mXmppConnectionService.markRead(c);
 117                    activateGracePeriod(account);
 118                }
 119                return false;
 120            } else {
 121                if (isTypeGroupChat) {
 122                    MucOptions.User user = c.getMucOptions().findUserByFullJid(from);
 123                    if (user != null) {
 124                        return user.setChatState(state);
 125                    } else {
 126                        return false;
 127                    }
 128                } else {
 129                    return c.setIncomingChatState(state);
 130                }
 131            }
 132        }
 133        return false;
 134    }
 135
 136    private Message parseAxolotlChat(Element axolotlMessage, Jid from, Conversation conversation, int status, final boolean checkedForDuplicates, boolean postpone) {
 137        final AxolotlService service = conversation.getAccount().getAxolotlService();
 138        final XmppAxolotlMessage xmppAxolotlMessage;
 139        try {
 140            xmppAxolotlMessage = XmppAxolotlMessage.fromElement(axolotlMessage, from.asBareJid());
 141        } catch (Exception e) {
 142            Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": invalid omemo message received " + e.getMessage());
 143            return null;
 144        }
 145        if (xmppAxolotlMessage.hasPayload()) {
 146            final XmppAxolotlMessage.XmppAxolotlPlaintextMessage plaintextMessage;
 147            try {
 148                plaintextMessage = service.processReceivingPayloadMessage(xmppAxolotlMessage, postpone);
 149            } catch (BrokenSessionException e) {
 150                if (checkedForDuplicates) {
 151                    if (service.trustedOrPreviouslyResponded(from.asBareJid())) {
 152                        service.reportBrokenSessionException(e, postpone);
 153                        return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_FAILED, status);
 154                    } else {
 155                        Log.d(Config.LOGTAG, "ignoring broken session exception because contact was not trusted");
 156                        return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_FAILED, status);
 157                    }
 158                } else {
 159                    Log.d(Config.LOGTAG, "ignoring broken session exception because checkForDuplicates failed");
 160                    return null;
 161                }
 162            } catch (NotEncryptedForThisDeviceException e) {
 163                return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE, status);
 164            } catch (OutdatedSenderException e) {
 165                return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_FAILED, status);
 166            }
 167            if (plaintextMessage != null) {
 168                Message finishedMessage = new Message(conversation, plaintextMessage.getPlaintext(), Message.ENCRYPTION_AXOLOTL, status);
 169                finishedMessage.setFingerprint(plaintextMessage.getFingerprint());
 170                Log.d(Config.LOGTAG, AxolotlService.getLogprefix(finishedMessage.getConversation().getAccount()) + " Received Message with session fingerprint: " + plaintextMessage.getFingerprint());
 171                return finishedMessage;
 172            }
 173        } else {
 174            Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": received OMEMO key transport message");
 175            service.processReceivingKeyTransportMessage(xmppAxolotlMessage, postpone);
 176        }
 177        return null;
 178    }
 179
 180    private Invite extractInvite(final Element message) {
 181        final Element mucUser = message.findChild("x", Namespace.MUC_USER);
 182        if (mucUser != null) {
 183            final Element invite = mucUser.findChild("invite");
 184            if (invite != null) {
 185                final String password = mucUser.findChildContent("password");
 186                final Jid from = InvalidJid.getNullForInvalid(invite.getAttributeAsJid("from"));
 187                final Jid to = InvalidJid.getNullForInvalid(invite.getAttributeAsJid("to"));
 188                if (to != null && from == null) {
 189                    Log.d(Config.LOGTAG,"do not parse outgoing mediated invite "+message);
 190                    return null;
 191                }
 192                final Jid room = InvalidJid.getNullForInvalid(message.getAttributeAsJid("from"));
 193                if (room == null) {
 194                    return null;
 195                }
 196                return new Invite(room, password, false, from);
 197            }
 198        }
 199        final Element conference = message.findChild("x", "jabber:x:conference");
 200        if (conference != null) {
 201            Jid from = InvalidJid.getNullForInvalid(message.getAttributeAsJid("from"));
 202            Jid room = InvalidJid.getNullForInvalid(conference.getAttributeAsJid("jid"));
 203            if (room == null) {
 204                return null;
 205            }
 206            return new Invite(room, conference.getAttribute("password"), true, from);
 207        }
 208        return null;
 209    }
 210
 211    private void parseEvent(final Element event, final Jid from, final Account account) {
 212        final Element items = event.findChild("items");
 213        final String node = items == null ? null : items.getAttribute("node");
 214        if ("urn:xmpp:avatar:metadata".equals(node)) {
 215            Avatar avatar = Avatar.parseMetadata(items);
 216            if (avatar != null) {
 217                avatar.owner = from.asBareJid();
 218                if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
 219                    if (account.getJid().asBareJid().equals(from)) {
 220                        if (account.setAvatar(avatar.getFilename())) {
 221                            mXmppConnectionService.databaseBackend.updateAccount(account);
 222                            mXmppConnectionService.notifyAccountAvatarHasChanged(account);
 223                        }
 224                        mXmppConnectionService.getAvatarService().clear(account);
 225                        mXmppConnectionService.updateConversationUi();
 226                        mXmppConnectionService.updateAccountUi();
 227                    } else {
 228                        final Contact contact = account.getRoster().getContact(from);
 229                        contact.setAvatar(avatar);
 230                        mXmppConnectionService.syncRoster(account);
 231                        mXmppConnectionService.getAvatarService().clear(contact);
 232                        mXmppConnectionService.updateConversationUi();
 233                        mXmppConnectionService.updateRosterUi();
 234                    }
 235                } else if (mXmppConnectionService.isDataSaverDisabled()) {
 236                    mXmppConnectionService.fetchAvatar(account, avatar);
 237                }
 238            }
 239        } else if (Namespace.NICK.equals(node)) {
 240            final Element i = items.findChild("item");
 241            final String nick = i == null ? null : i.findChildContent("nick", Namespace.NICK);
 242            if (nick != null) {
 243                setNick(account, from, nick);
 244            }
 245        } else if (AxolotlService.PEP_DEVICE_LIST.equals(node)) {
 246            Element item = items.findChild("item");
 247            final Set<Integer> deviceIds = IqParser.deviceIds(item);
 248            Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account) + "Received PEP device list " + deviceIds + " update from " + from + ", processing... ");
 249            final AxolotlService axolotlService = account.getAxolotlService();
 250            axolotlService.registerDevices(from, deviceIds);
 251        } else if (Namespace.BOOKMARKS.equals(node) && account.getJid().asBareJid().equals(from)) {
 252            final var connection = account.getXmppConnection();
 253            if (connection.getFeatures().bookmarksConversion()) {
 254                if (connection.getFeatures().bookmarks2()) {
 255                    Log.w(
 256                            Config.LOGTAG,
 257                            account.getJid().asBareJid()
 258                                    + ": received storage:bookmark notification even though we opted into bookmarks:1");
 259                }
 260                final Element i = items.findChild("item");
 261                final Element storage =
 262                        i == null ? null : i.findChild("storage", Namespace.BOOKMARKS);
 263                final Map<Jid, Bookmark> bookmarks = Bookmark.parseFromStorage(storage, account);
 264                mXmppConnectionService.processBookmarksInitial(account, bookmarks, true);
 265                Log.d(
 266                        Config.LOGTAG,
 267                        account.getJid().asBareJid() + ": processing bookmark PEP event");
 268            } else {
 269                Log.d(
 270                        Config.LOGTAG,
 271                        account.getJid().asBareJid()
 272                                + ": ignoring bookmark PEP event because bookmark conversion was not detected");
 273            }
 274        } else if (Namespace.BOOKMARKS2.equals(node) && account.getJid().asBareJid().equals(from)) {
 275            final Element item = items.findChild("item");
 276            final Element retract = items.findChild("retract");
 277            if (item != null) {
 278                final Bookmark bookmark = Bookmark.parseFromItem(item, account);
 279                if (bookmark != null) {
 280                    account.putBookmark(bookmark);
 281                    mXmppConnectionService.processModifiedBookmark(bookmark);
 282                    mXmppConnectionService.updateConversationUi();
 283                }
 284            }
 285            if (retract != null) {
 286                final Jid id = InvalidJid.getNullForInvalid(retract.getAttributeAsJid("id"));
 287                if (id != null) {
 288                    account.removeBookmark(id);
 289                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": deleted bookmark for " + id);
 290                    mXmppConnectionService.processDeletedBookmark(account, id);
 291                    mXmppConnectionService.updateConversationUi();
 292                }
 293            }
 294        } else if (Config.MESSAGE_DISPLAYED_SYNCHRONIZATION
 295                && Namespace.MDS_DISPLAYED.equals(node)
 296                && account.getJid().asBareJid().equals(from)) {
 297            final Element item = items.findChild("item");
 298            mXmppConnectionService.processMdsItem(account, item);
 299        } else {
 300            Log.d(
 301                    Config.LOGTAG,
 302                    account.getJid().asBareJid()
 303                            + " received pubsub notification for node="
 304                            + node);
 305        }
 306    }
 307
 308    private void parseDeleteEvent(final Element event, final Jid from, final Account account) {
 309        final Element delete = event.findChild("delete");
 310        final String node = delete == null ? null : delete.getAttribute("node");
 311        if (Namespace.NICK.equals(node)) {
 312            Log.d(Config.LOGTAG, "parsing nick delete event from " + from);
 313            setNick(account, from, null);
 314        } else if (Namespace.BOOKMARKS2.equals(node) && account.getJid().asBareJid().equals(from)) {
 315            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": deleted bookmarks node");
 316            deleteAllBookmarks(account);
 317        } else if (Namespace.AVATAR_METADATA.equals(node) && account.getJid().asBareJid().equals(from)) {
 318            Log.d(Config.LOGTAG,account.getJid().asBareJid()+": deleted avatar metadata node");
 319        }
 320    }
 321
 322    private void parsePurgeEvent(final Element event, final Jid from, final Account account) {
 323        final Element purge = event.findChild("purge");
 324        final String node = purge == null ? null : purge.getAttribute("node");
 325        if (Namespace.BOOKMARKS2.equals(node) && account.getJid().asBareJid().equals(from)) {
 326            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": purged bookmarks");
 327            deleteAllBookmarks(account);
 328        }
 329    }
 330
 331    private void deleteAllBookmarks(final Account account) {
 332        final var previous = account.getBookmarkedJids();
 333        account.setBookmarks(Collections.emptyMap());
 334        mXmppConnectionService.processDeletedBookmarks(account, previous);
 335    }
 336
 337    private void setNick(Account account, Jid user, String nick) {
 338        if (user.asBareJid().equals(account.getJid().asBareJid())) {
 339            account.setDisplayName(nick);
 340            if (QuickConversationsService.isQuicksy()) {
 341                mXmppConnectionService.getAvatarService().clear(account);
 342            }
 343        } else {
 344            Contact contact = account.getRoster().getContact(user);
 345            if (contact.setPresenceName(nick)) {
 346                mXmppConnectionService.syncRoster(account);
 347                mXmppConnectionService.getAvatarService().clear(contact);
 348            }
 349        }
 350        mXmppConnectionService.updateConversationUi();
 351        mXmppConnectionService.updateAccountUi();
 352    }
 353
 354    private boolean handleErrorMessage(final Account account, final im.conversations.android.xmpp.model.stanza.Message packet) {
 355        if (packet.getType() == im.conversations.android.xmpp.model.stanza.Message.Type.ERROR) {
 356            if (packet.fromServer(account)) {
 357                final var forwarded = getForwardedMessagePacket(packet,"received", Namespace.CARBONS);
 358                if (forwarded != null) {
 359                    return handleErrorMessage(account, forwarded.first);
 360                }
 361            }
 362            final Jid from = packet.getFrom();
 363            final String id = packet.getId();
 364            if (from != null && id != null) {
 365                if (id.startsWith(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX)) {
 366                    final String sessionId = id.substring(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX.length());
 367                    mXmppConnectionService.getJingleConnectionManager()
 368                            .updateProposedSessionDiscovered(account, from, sessionId, JingleConnectionManager.DeviceDiscoveryState.FAILED);
 369                    return true;
 370                }
 371                if (id.startsWith(JingleRtpConnection.JINGLE_MESSAGE_PROCEED_ID_PREFIX)) {
 372                    final String sessionId = id.substring(JingleRtpConnection.JINGLE_MESSAGE_PROCEED_ID_PREFIX.length());
 373                    final String message = extractErrorMessage(packet);
 374                    mXmppConnectionService.getJingleConnectionManager().failProceed(account, from, sessionId, message);
 375                    return true;
 376                }
 377                mXmppConnectionService.markMessage(account,
 378                        from.asBareJid(),
 379                        id,
 380                        Message.STATUS_SEND_FAILED,
 381                        extractErrorMessage(packet));
 382                final Element error = packet.findChild("error");
 383                final boolean pingWorthyError = error != null && (error.hasChild("not-acceptable") || error.hasChild("remote-server-timeout") || error.hasChild("remote-server-not-found"));
 384                if (pingWorthyError) {
 385                    Conversation conversation = mXmppConnectionService.find(account, from);
 386                    if (conversation != null && conversation.getMode() == Conversational.MODE_MULTI) {
 387                        if (conversation.getMucOptions().online()) {
 388                            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received ping worthy error for seemingly online muc at " + from);
 389                            mXmppConnectionService.mucSelfPingAndRejoin(conversation);
 390                        }
 391                    }
 392                }
 393            }
 394            return true;
 395        }
 396        return false;
 397    }
 398
 399    @Override
 400    public void accept(final im.conversations.android.xmpp.model.stanza.Message original) {
 401        if (handleErrorMessage(account, original)) {
 402            return;
 403        }
 404        final im.conversations.android.xmpp.model.stanza.Message packet;
 405        Long timestamp = null;
 406        boolean isCarbon = false;
 407        String serverMsgId = null;
 408        final Element fin = original.findChild("fin", MessageArchiveService.Version.MAM_0.namespace);
 409        if (fin != null) {
 410            mXmppConnectionService.getMessageArchiveService().processFinLegacy(fin, original.getFrom());
 411            return;
 412        }
 413        final Element result = MessageArchiveService.Version.findResult(original);
 414        final String queryId = result == null ? null : result.getAttribute("queryid");
 415        final MessageArchiveService.Query query = queryId == null ? null : mXmppConnectionService.getMessageArchiveService().findQuery(queryId);
 416        final boolean offlineMessagesRetrieved = account.getXmppConnection().isOfflineMessagesRetrieved();
 417        if (query != null && query.validFrom(original.getFrom())) {
 418            final var f = getForwardedMessagePacket(original,"result", query.version.namespace);
 419            if (f == null) {
 420                return;
 421            }
 422            timestamp = f.second;
 423            packet = f.first;
 424            serverMsgId = result.getAttribute("id");
 425            query.incrementMessageCount();
 426            if (handleErrorMessage(account, packet)) {
 427                return;
 428            }
 429        } else if (query != null) {
 430            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received mam result with invalid from (" + original.getFrom() + ") or queryId (" + queryId + ")");
 431            return;
 432        } else if (original.fromServer(account)) {
 433            Pair<im.conversations.android.xmpp.model.stanza.Message, Long> f;
 434            f = getForwardedMessagePacket(original, Received.class);
 435            f = f == null ? getForwardedMessagePacket(original, Sent.class) : f;
 436            packet = f != null ? f.first : original;
 437            if (handleErrorMessage(account, packet)) {
 438                return;
 439            }
 440            timestamp = f != null ? f.second : null;
 441            isCarbon = f != null;
 442        } else {
 443            packet = original;
 444        }
 445
 446        if (timestamp == null) {
 447            timestamp = AbstractParser.parseTimestamp(original, AbstractParser.parseTimestamp(packet));
 448        }
 449        final LocalizedContent body = packet.getBody();
 450        final Element mucUserElement = packet.findChild("x", Namespace.MUC_USER);
 451        final String pgpEncrypted = packet.findChildContent("x", "jabber:x:encrypted");
 452        final Element replaceElement = packet.findChild("replace", "urn:xmpp:message-correct:0");
 453        final Element oob = packet.findChild("x", Namespace.OOB);
 454        final String oobUrl = oob != null ? oob.findChildContent("url") : null;
 455        final String replacementId = replaceElement == null ? null : replaceElement.getAttribute("id");
 456        final Element axolotlEncrypted = packet.findChildEnsureSingle(XmppAxolotlMessage.CONTAINERTAG, AxolotlService.PEP_PREFIX);
 457        int status;
 458        final Jid counterpart;
 459        final Jid to = packet.getTo();
 460        final Jid from = packet.getFrom();
 461        final Element originId = packet.findChild("origin-id", Namespace.STANZA_IDS);
 462        final String remoteMsgId;
 463        if (originId != null && originId.getAttribute("id") != null) {
 464            remoteMsgId = originId.getAttribute("id");
 465        } else {
 466            remoteMsgId = packet.getId();
 467        }
 468        boolean notify = false;
 469
 470        if (from == null || !InvalidJid.isValid(from) || !InvalidJid.isValid(to)) {
 471            Log.e(Config.LOGTAG, "encountered invalid message from='" + from + "' to='" + to + "'");
 472            return;
 473        }
 474
 475        boolean isTypeGroupChat = packet.getType() == im.conversations.android.xmpp.model.stanza.Message.Type.GROUPCHAT;
 476        if (query != null && !query.muc() && isTypeGroupChat) {
 477            Log.e(Config.LOGTAG, account.getJid().asBareJid() + ": received groupchat (" + from + ") message on regular MAM request. skipping");
 478            return;
 479        }
 480        boolean isMucStatusMessage = InvalidJid.hasValidFrom(packet) && from.isBareJid() && mucUserElement != null && mucUserElement.hasChild("status");
 481        boolean selfAddressed;
 482        if (packet.fromAccount(account)) {
 483            status = Message.STATUS_SEND;
 484            selfAddressed = to == null || account.getJid().asBareJid().equals(to.asBareJid());
 485            if (selfAddressed) {
 486                counterpart = from;
 487            } else {
 488                counterpart = to;
 489            }
 490        } else {
 491            status = Message.STATUS_RECEIVED;
 492            counterpart = from;
 493            selfAddressed = false;
 494        }
 495
 496        final Invite invite = extractInvite(packet);
 497        if (invite != null) {
 498            if (invite.jid.asBareJid().equals(account.getJid().asBareJid())) {
 499                Log.d(Config.LOGTAG,account.getJid().asBareJid()+": ignore invite to "+invite.jid+" because it matches account");
 500            } else if (isTypeGroupChat) {
 501                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignoring invite to " + invite.jid + " because it was received as group chat");
 502            } else if (invite.direct && (mucUserElement != null || invite.inviter == null || mXmppConnectionService.isMuc(account, invite.inviter))) {
 503                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignoring direct invite to " + invite.jid + " because it was received in MUC");
 504            } else {
 505                invite.execute(account);
 506                return;
 507            }
 508        }
 509
 510        if ((body != null || pgpEncrypted != null || (axolotlEncrypted != null && axolotlEncrypted.hasChild("payload")) || oobUrl != null) && !isMucStatusMessage) {
 511            final boolean conversationIsProbablyMuc = isTypeGroupChat || mucUserElement != null || account.getXmppConnection().getMucServersWithholdAccount().contains(counterpart.getDomain().toEscapedString());
 512            final Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), conversationIsProbablyMuc, false, query, false);
 513            final boolean conversationMultiMode = conversation.getMode() == Conversation.MODE_MULTI;
 514
 515            if (serverMsgId == null) {
 516                serverMsgId = extractStanzaId(packet, isTypeGroupChat, conversation);
 517            }
 518
 519
 520            if (selfAddressed) {
 521                if (mXmppConnectionService.markMessage(conversation, remoteMsgId, Message.STATUS_SEND_RECEIVED, serverMsgId)) {
 522                    return;
 523                }
 524                status = Message.STATUS_RECEIVED;
 525                if (remoteMsgId != null && conversation.findMessageWithRemoteId(remoteMsgId, counterpart) != null) {
 526                    return;
 527                }
 528            }
 529
 530            if (isTypeGroupChat) {
 531                if (conversation.getMucOptions().isSelf(counterpart)) {
 532                    status = Message.STATUS_SEND_RECEIVED;
 533                    isCarbon = true; //not really carbon but received from another resource
 534                    if (mXmppConnectionService.markMessage(conversation, remoteMsgId, status, serverMsgId, body)) {
 535                        return;
 536                    } else if (remoteMsgId == null || Config.IGNORE_ID_REWRITE_IN_MUC) {
 537                        if (body != null) {
 538                            Message message = conversation.findSentMessageWithBody(body.content);
 539                            if (message != null) {
 540                                mXmppConnectionService.markMessage(message, status);
 541                                return;
 542                            }
 543                        }
 544                    }
 545                } else {
 546                    status = Message.STATUS_RECEIVED;
 547                }
 548            }
 549            final Message message;
 550            if (pgpEncrypted != null && Config.supportOpenPgp()) {
 551                message = new Message(conversation, pgpEncrypted, Message.ENCRYPTION_PGP, status);
 552            } else if (axolotlEncrypted != null && Config.supportOmemo()) {
 553                Jid origin;
 554                Set<Jid> fallbacksBySourceId = Collections.emptySet();
 555                if (conversationMultiMode) {
 556                    final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 557                    origin = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
 558                    if (origin == null) {
 559                        try {
 560                            fallbacksBySourceId = account.getAxolotlService().findCounterpartsBySourceId(XmppAxolotlMessage.parseSourceId(axolotlEncrypted));
 561                        } catch (IllegalArgumentException e) {
 562                            //ignoring
 563                        }
 564                    }
 565                    if (origin == null && fallbacksBySourceId.size() == 0) {
 566                        Log.d(Config.LOGTAG, "axolotl message in anonymous conference received and no possible fallbacks");
 567                        return;
 568                    }
 569                } else {
 570                    fallbacksBySourceId = Collections.emptySet();
 571                    origin = from;
 572                }
 573
 574                final boolean liveMessage = query == null && !isTypeGroupChat && mucUserElement == null;
 575                final boolean checkedForDuplicates = liveMessage || (serverMsgId != null && remoteMsgId != null && !conversation.possibleDuplicate(serverMsgId, remoteMsgId));
 576
 577                if (origin != null) {
 578                    message = parseAxolotlChat(axolotlEncrypted, origin, conversation, status, checkedForDuplicates, query != null);
 579                } else {
 580                    Message trial = null;
 581                    for (Jid fallback : fallbacksBySourceId) {
 582                        trial = parseAxolotlChat(axolotlEncrypted, fallback, conversation, status, checkedForDuplicates && fallbacksBySourceId.size() == 1, query != null);
 583                        if (trial != null) {
 584                            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": decoded muc message using fallback");
 585                            origin = fallback;
 586                            break;
 587                        }
 588                    }
 589                    message = trial;
 590                }
 591                if (message == null) {
 592                    if (query == null && extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet)) {
 593                        mXmppConnectionService.updateConversationUi();
 594                    }
 595                    if (query != null && status == Message.STATUS_SEND && remoteMsgId != null) {
 596                        Message previouslySent = conversation.findSentMessageWithUuid(remoteMsgId);
 597                        if (previouslySent != null && previouslySent.getServerMsgId() == null && serverMsgId != null) {
 598                            previouslySent.setServerMsgId(serverMsgId);
 599                            mXmppConnectionService.databaseBackend.updateMessage(previouslySent, false);
 600                            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": encountered previously sent OMEMO message without serverId. updating...");
 601                        }
 602                    }
 603                    return;
 604                }
 605                if (conversationMultiMode) {
 606                    message.setTrueCounterpart(origin);
 607                }
 608            } else if (body == null && oobUrl != null) {
 609                message = new Message(conversation, oobUrl, Message.ENCRYPTION_NONE, status);
 610                message.setOob(true);
 611                if (CryptoHelper.isPgpEncryptedUrl(oobUrl)) {
 612                    message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 613                }
 614            } else {
 615                message = new Message(conversation, body.content, Message.ENCRYPTION_NONE, status);
 616                if (body.count > 1) {
 617                    message.setBodyLanguage(body.language);
 618                }
 619            }
 620
 621            message.setCounterpart(counterpart);
 622            message.setRemoteMsgId(remoteMsgId);
 623            message.setServerMsgId(serverMsgId);
 624            message.setCarbon(isCarbon);
 625            message.setTime(timestamp);
 626            if (body != null && body.content != null && body.content.equals(oobUrl)) {
 627                message.setOob(true);
 628                if (CryptoHelper.isPgpEncryptedUrl(oobUrl)) {
 629                    message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 630                }
 631            }
 632            message.markable = packet.hasChild("markable", "urn:xmpp:chat-markers:0");
 633            if (conversationMultiMode) {
 634                message.setMucUser(conversation.getMucOptions().findUserByFullJid(counterpart));
 635                final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 636                Jid trueCounterpart;
 637                if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
 638                    trueCounterpart = message.getTrueCounterpart();
 639                } else if (query != null && query.safeToExtractTrueCounterpart()) {
 640                    trueCounterpart = getTrueCounterpart(mucUserElement, fallback);
 641                } else {
 642                    trueCounterpart = fallback;
 643                }
 644                if (trueCounterpart != null && isTypeGroupChat) {
 645                    if (trueCounterpart.asBareJid().equals(account.getJid().asBareJid())) {
 646                        status = isTypeGroupChat ? Message.STATUS_SEND_RECEIVED : Message.STATUS_SEND;
 647                    } else {
 648                        status = Message.STATUS_RECEIVED;
 649                        message.setCarbon(false);
 650                    }
 651                }
 652                message.setStatus(status);
 653                message.setTrueCounterpart(trueCounterpart);
 654                if (!isTypeGroupChat) {
 655                    message.setType(Message.TYPE_PRIVATE);
 656                }
 657            } else {
 658                updateLastseen(account, from);
 659            }
 660
 661            if (replacementId != null && mXmppConnectionService.allowMessageCorrection()) {
 662                final Message replacedMessage = conversation.findMessageWithRemoteIdAndCounterpart(replacementId,
 663                        counterpart,
 664                        message.getStatus() == Message.STATUS_RECEIVED,
 665                        message.isCarbon());
 666                if (replacedMessage != null) {
 667                    final boolean fingerprintsMatch = replacedMessage.getFingerprint() == null
 668                            || replacedMessage.getFingerprint().equals(message.getFingerprint());
 669                    final boolean trueCountersMatch = replacedMessage.getTrueCounterpart() != null
 670                            && message.getTrueCounterpart() != null
 671                            && replacedMessage.getTrueCounterpart().asBareJid().equals(message.getTrueCounterpart().asBareJid());
 672                    final boolean mucUserMatches = query == null && replacedMessage.sameMucUser(message); //can not be checked when using mam
 673                    final boolean duplicate = conversation.hasDuplicateMessage(message);
 674                    if (fingerprintsMatch && (trueCountersMatch || !conversationMultiMode || mucUserMatches) && !duplicate) {
 675                        synchronized (replacedMessage) {
 676                            final String uuid = replacedMessage.getUuid();
 677                            replacedMessage.setUuid(UUID.randomUUID().toString());
 678                            replacedMessage.setBody(message.getBody());
 679                            replacedMessage.putEdited(replacedMessage.getRemoteMsgId(), replacedMessage.getServerMsgId());
 680                            replacedMessage.setRemoteMsgId(remoteMsgId);
 681                            if (replacedMessage.getServerMsgId() == null || message.getServerMsgId() != null) {
 682                                replacedMessage.setServerMsgId(message.getServerMsgId());
 683                            }
 684                            replacedMessage.setEncryption(message.getEncryption());
 685                            if (replacedMessage.getStatus() == Message.STATUS_RECEIVED) {
 686                                replacedMessage.markUnread();
 687                            }
 688                            extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet);
 689                            mXmppConnectionService.updateMessage(replacedMessage, uuid);
 690                            if (mXmppConnectionService.confirmMessages()
 691                                    && replacedMessage.getStatus() == Message.STATUS_RECEIVED
 692                                    && (replacedMessage.trusted() || replacedMessage.isPrivateMessage()) //TODO do we really want to send receipts for all PMs?
 693                                    && remoteMsgId != null
 694                                    && !selfAddressed
 695                                    && !isTypeGroupChat) {
 696                                processMessageReceipts(account, packet, remoteMsgId, query);
 697                            }
 698                            if (replacedMessage.getEncryption() == Message.ENCRYPTION_PGP) {
 699                                conversation.getAccount().getPgpDecryptionService().discard(replacedMessage);
 700                                conversation.getAccount().getPgpDecryptionService().decrypt(replacedMessage, false);
 701                            }
 702                        }
 703                        mXmppConnectionService.getNotificationService().updateNotification();
 704                        return;
 705                    } else {
 706                        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received message correction but verification didn't check out");
 707                    }
 708                }
 709            }
 710
 711            long deletionDate = mXmppConnectionService.getAutomaticMessageDeletionDate();
 712            if (deletionDate != 0 && message.getTimeSent() < deletionDate) {
 713                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": skipping message from " + message.getCounterpart().toString() + " because it was sent prior to our deletion date");
 714                return;
 715            }
 716
 717            boolean checkForDuplicates = (isTypeGroupChat && packet.hasChild("delay", "urn:xmpp:delay"))
 718                    || message.isPrivateMessage()
 719                    || message.getServerMsgId() != null
 720                    || (query == null && mXmppConnectionService.getMessageArchiveService().isCatchupInProgress(conversation));
 721            if (checkForDuplicates) {
 722                final Message duplicate = conversation.findDuplicateMessage(message);
 723                if (duplicate != null) {
 724                    final boolean serverMsgIdUpdated;
 725                    if (duplicate.getStatus() != Message.STATUS_RECEIVED
 726                            && duplicate.getUuid().equals(message.getRemoteMsgId())
 727                            && duplicate.getServerMsgId() == null
 728                            && message.getServerMsgId() != null) {
 729                        duplicate.setServerMsgId(message.getServerMsgId());
 730                        if (mXmppConnectionService.databaseBackend.updateMessage(duplicate, false)) {
 731                            serverMsgIdUpdated = true;
 732                        } else {
 733                            serverMsgIdUpdated = false;
 734                            Log.e(Config.LOGTAG, "failed to update message");
 735                        }
 736                    } else {
 737                        serverMsgIdUpdated = false;
 738                    }
 739                    Log.d(Config.LOGTAG, "skipping duplicate message with " + message.getCounterpart() + ". serverMsgIdUpdated=" + serverMsgIdUpdated);
 740                    return;
 741                }
 742            }
 743
 744            if (query != null && query.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) {
 745                conversation.prepend(query.getActualInThisQuery(), message);
 746            } else {
 747                conversation.add(message);
 748            }
 749            if (query != null) {
 750                query.incrementActualMessageCount();
 751            }
 752
 753            if (query == null || query.isCatchup()) { //either no mam or catchup
 754                if (status == Message.STATUS_SEND || status == Message.STATUS_SEND_RECEIVED) {
 755                    mXmppConnectionService.markRead(conversation);
 756                    if (query == null) {
 757                        activateGracePeriod(account);
 758                    }
 759                } else {
 760                    message.markUnread();
 761                    notify = true;
 762                }
 763            }
 764
 765            if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 766                notify = conversation.getAccount().getPgpDecryptionService().decrypt(message, notify);
 767            } else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE || message.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
 768                notify = false;
 769            }
 770
 771            if (query == null) {
 772                extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet);
 773                mXmppConnectionService.updateConversationUi();
 774            }
 775
 776            if (mXmppConnectionService.confirmMessages()
 777                    && message.getStatus() == Message.STATUS_RECEIVED
 778                    && (message.trusted() || message.isPrivateMessage())
 779                    && remoteMsgId != null
 780                    && !selfAddressed
 781                    && !isTypeGroupChat) {
 782                processMessageReceipts(account, packet, remoteMsgId, query);
 783            }
 784
 785            mXmppConnectionService.databaseBackend.createMessage(message);
 786            final HttpConnectionManager manager = this.mXmppConnectionService.getHttpConnectionManager();
 787            if (message.trusted() && message.treatAsDownloadable() && manager.getAutoAcceptFileSize() > 0) {
 788                manager.createNewDownloadConnection(message);
 789            } else if (notify) {
 790                if (query != null && query.isCatchup()) {
 791                    mXmppConnectionService.getNotificationService().pushFromBacklog(message);
 792                } else {
 793                    mXmppConnectionService.getNotificationService().push(message);
 794                }
 795            }
 796        } else if (!packet.hasChild("body")) { //no body
 797
 798            final Conversation conversation = mXmppConnectionService.find(account, from.asBareJid());
 799            if (axolotlEncrypted != null) {
 800                Jid origin;
 801                if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
 802                    final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 803                    origin = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
 804                    if (origin == null) {
 805                        Log.d(Config.LOGTAG, "omemo key transport message in anonymous conference received");
 806                        return;
 807                    }
 808                } else if (isTypeGroupChat) {
 809                    return;
 810                } else {
 811                    origin = from;
 812                }
 813                try {
 814                    final XmppAxolotlMessage xmppAxolotlMessage = XmppAxolotlMessage.fromElement(axolotlEncrypted, origin.asBareJid());
 815                    account.getAxolotlService().processReceivingKeyTransportMessage(xmppAxolotlMessage, query != null);
 816                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": omemo key transport message received from " + origin);
 817                } catch (Exception e) {
 818                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": invalid omemo key transport message received " + e.getMessage());
 819                    return;
 820                }
 821            }
 822
 823            if (query == null && extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet)) {
 824                mXmppConnectionService.updateConversationUi();
 825            }
 826
 827            if (isTypeGroupChat) {
 828                if (packet.hasChild("subject") && !packet.hasChild("thread")) { // We already know it has no body per above
 829                    if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
 830                        conversation.setHasMessagesLeftOnServer(conversation.countMessages() > 0);
 831                        final LocalizedContent subject = packet.findInternationalizedChildContentInDefaultNamespace("subject");
 832                        if (subject != null && conversation.getMucOptions().setSubject(subject.content)) {
 833                            mXmppConnectionService.updateConversation(conversation);
 834                        }
 835                        mXmppConnectionService.updateConversationUi();
 836                        return;
 837                    }
 838                }
 839            }
 840            if (conversation != null && mucUserElement != null && InvalidJid.hasValidFrom(packet) && from.isBareJid()) {
 841                for (Element child : mucUserElement.getChildren()) {
 842                    if ("status".equals(child.getName())) {
 843                        try {
 844                            int code = Integer.parseInt(child.getAttribute("code"));
 845                            if ((code >= 170 && code <= 174) || (code >= 102 && code <= 104)) {
 846                                mXmppConnectionService.fetchConferenceConfiguration(conversation);
 847                                break;
 848                            }
 849                        } catch (Exception e) {
 850                            //ignored
 851                        }
 852                    } else if ("item".equals(child.getName())) {
 853                        MucOptions.User user = AbstractParser.parseItem(conversation, child);
 854                        Log.d(Config.LOGTAG, account.getJid() + ": changing affiliation for "
 855                                + user.getRealJid() + " to " + user.getAffiliation() + " in "
 856                                + conversation.getJid().asBareJid());
 857                        if (!user.realJidMatchesAccount()) {
 858                            boolean isNew = conversation.getMucOptions().updateUser(user);
 859                            mXmppConnectionService.getAvatarService().clear(conversation);
 860                            mXmppConnectionService.updateMucRosterUi();
 861                            mXmppConnectionService.updateConversationUi();
 862                            Contact contact = user.getContact();
 863                            if (!user.getAffiliation().ranks(MucOptions.Affiliation.MEMBER)) {
 864                                Jid jid = user.getRealJid();
 865                                List<Jid> cryptoTargets = conversation.getAcceptedCryptoTargets();
 866                                if (cryptoTargets.remove(user.getRealJid())) {
 867                                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": removed " + jid + " from crypto targets of " + conversation.getName());
 868                                    conversation.setAcceptedCryptoTargets(cryptoTargets);
 869                                    mXmppConnectionService.updateConversation(conversation);
 870                                }
 871                            } else if (isNew
 872                                    && user.getRealJid() != null
 873                                    && conversation.getMucOptions().isPrivateAndNonAnonymous()
 874                                    && (contact == null || !contact.mutualPresenceSubscription())
 875                                    && account.getAxolotlService().hasEmptyDeviceList(user.getRealJid())) {
 876                                account.getAxolotlService().fetchDeviceIds(user.getRealJid());
 877                            }
 878                        }
 879                    }
 880                }
 881            }
 882            if (!isTypeGroupChat) {
 883                for (Element child : packet.getChildren()) {
 884                    if (Namespace.JINGLE_MESSAGE.equals(child.getNamespace()) && JINGLE_MESSAGE_ELEMENT_NAMES.contains(child.getName())) {
 885                        final String action = child.getName();
 886                        final String sessionId = child.getAttribute("id");
 887                        if (sessionId == null) {
 888                            break;
 889                        }
 890                        if (query == null && offlineMessagesRetrieved) {
 891                            if (serverMsgId == null) {
 892                                serverMsgId = extractStanzaId(account, packet);
 893                            }
 894                            mXmppConnectionService
 895                                    .getJingleConnectionManager()
 896                                    .deliverMessage(
 897                                            account,
 898                                            packet.getTo(),
 899                                            packet.getFrom(),
 900                                            child,
 901                                            remoteMsgId,
 902                                            serverMsgId,
 903                                            timestamp);
 904                            final Contact contact = account.getRoster().getContact(from);
 905                            // this is the same condition that is found in JingleRtpConnection for
 906                            // the 'ringing' response. Responding with delivery receipts predates
 907                            // the 'ringing' spec'd
 908                            final boolean sendReceipts =
 909                                    (mXmppConnectionService.confirmMessages()
 910                                                    && contact.showInContactList())
 911                                            || Config.JINGLE_MESSAGE_INIT_STRICT_OFFLINE_CHECK;
 912                            if (remoteMsgId != null && !contact.isSelf() && sendReceipts) {
 913                                processMessageReceipts(account, packet, remoteMsgId, null);
 914                            }
 915                        } else if ((query != null && query.isCatchup()) || !offlineMessagesRetrieved) {
 916                            if ("propose".equals(action)) {
 917                                final Element description = child.findChild("description");
 918                                final String namespace =
 919                                        description == null ? null : description.getNamespace();
 920                                if (Namespace.JINGLE_APPS_RTP.equals(namespace)) {
 921                                    final Conversation c =
 922                                            mXmppConnectionService.findOrCreateConversation(
 923                                                    account, counterpart.asBareJid(), false, false);
 924                                    final Message preExistingMessage =
 925                                            c.findRtpSession(sessionId, status);
 926                                    if (preExistingMessage != null) {
 927                                        preExistingMessage.setServerMsgId(serverMsgId);
 928                                        mXmppConnectionService.updateMessage(preExistingMessage);
 929                                        break;
 930                                    }
 931                                    final Message message =
 932                                            new Message(
 933                                                    c, status, Message.TYPE_RTP_SESSION, sessionId);
 934                                    message.setServerMsgId(serverMsgId);
 935                                    message.setTime(timestamp);
 936                                    message.setBody(new RtpSessionStatus(false, 0).toString());
 937                                    c.add(message);
 938                                    mXmppConnectionService.databaseBackend.createMessage(message);
 939                                }
 940                            } else if ("proceed".equals(action)) {
 941                                // status needs to be flipped to find the original propose
 942                                final Conversation c =
 943                                        mXmppConnectionService.findOrCreateConversation(
 944                                                account, counterpart.asBareJid(), false, false);
 945                                final int s =
 946                                        packet.fromAccount(account)
 947                                                ? Message.STATUS_RECEIVED
 948                                                : Message.STATUS_SEND;
 949                                final Message message = c.findRtpSession(sessionId, s);
 950                                if (message != null) {
 951                                    message.setBody(new RtpSessionStatus(true, 0).toString());
 952                                    if (serverMsgId != null) {
 953                                        message.setServerMsgId(serverMsgId);
 954                                    }
 955                                    message.setTime(timestamp);
 956                                    mXmppConnectionService.updateMessage(message, true);
 957                                } else {
 958                                    Log.d(
 959                                            Config.LOGTAG,
 960                                            "unable to find original rtp session message for received propose");
 961                                }
 962
 963                            } else if ("finish".equals(action)) {
 964                                Log.d(
 965                                        Config.LOGTAG,
 966                                        "received JMI 'finish' during MAM catch-up. Can be used to update success/failure and duration");
 967                            }
 968                        } else {
 969                            //MAM reloads (non catchups
 970                            if ("propose".equals(action)) {
 971                                final Element description = child.findChild("description");
 972                                final String namespace = description == null ? null : description.getNamespace();
 973                                if (Namespace.JINGLE_APPS_RTP.equals(namespace)) {
 974                                    final Conversation c = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), false, false);
 975                                    final Message preExistingMessage = c.findRtpSession(sessionId, status);
 976                                    if (preExistingMessage != null) {
 977                                        preExistingMessage.setServerMsgId(serverMsgId);
 978                                        mXmppConnectionService.updateMessage(preExistingMessage);
 979                                        break;
 980                                    }
 981                                    final Message message = new Message(
 982                                            c,
 983                                            status,
 984                                            Message.TYPE_RTP_SESSION,
 985                                            sessionId
 986                                    );
 987                                    message.setServerMsgId(serverMsgId);
 988                                    message.setTime(timestamp);
 989                                    message.setBody(new RtpSessionStatus(true, 0).toString());
 990                                    if (query.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) {
 991                                        c.prepend(query.getActualInThisQuery(), message);
 992                                    } else {
 993                                        c.add(message);
 994                                    }
 995                                    query.incrementActualMessageCount();
 996                                    mXmppConnectionService.databaseBackend.createMessage(message);
 997                                }
 998                            }
 999                        }
1000                        break;
1001                    }
1002                }
1003            }
1004        }
1005
1006        Element received = packet.findChild("received", "urn:xmpp:chat-markers:0");
1007        if (received == null) {
1008            received = packet.findChild("received", "urn:xmpp:receipts");
1009        }
1010        if (received != null) {
1011            String id = received.getAttribute("id");
1012            if (packet.fromAccount(account)) {
1013                if (query != null && id != null && packet.getTo() != null) {
1014                    query.removePendingReceiptRequest(new ReceiptRequest(packet.getTo(), id));
1015                }
1016            } else if (id != null) {
1017                if (id.startsWith(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX)) {
1018                    final String sessionId = id.substring(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX.length());
1019                    mXmppConnectionService.getJingleConnectionManager()
1020                            .updateProposedSessionDiscovered(account, from, sessionId, JingleConnectionManager.DeviceDiscoveryState.DISCOVERED);
1021                } else {
1022                    mXmppConnectionService.markMessage(account, from.asBareJid(), id, Message.STATUS_SEND_RECEIVED);
1023                }
1024            }
1025        }
1026        final Element displayed = packet.findChild("displayed", "urn:xmpp:chat-markers:0");
1027        if (displayed != null) {
1028            final String id = displayed.getAttribute("id");
1029            final Jid sender = InvalidJid.getNullForInvalid(displayed.getAttributeAsJid("sender"));
1030            if (packet.fromAccount(account) && !selfAddressed) {
1031                final Conversation c =
1032                        mXmppConnectionService.find(account, counterpart.asBareJid());
1033                final Message message =
1034                        (c == null || id == null) ? null : c.findReceivedWithRemoteId(id);
1035                if (message != null && (query == null || query.isCatchup())) {
1036                    mXmppConnectionService.markReadUpTo(c, message);
1037                }
1038                if (query == null) {
1039                    activateGracePeriod(account);
1040                }
1041            } else if (isTypeGroupChat) {
1042                final Conversation conversation = mXmppConnectionService.find(account, counterpart.asBareJid());
1043                final Message message;
1044                if (conversation != null && id != null) {
1045                    if (sender != null) {
1046                        message = conversation.findMessageWithRemoteId(id, sender);
1047                    } else {
1048                        message = conversation.findMessageWithServerMsgId(id);
1049                    }
1050                } else {
1051                    message = null;
1052                }
1053                if (message != null) {
1054                    final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
1055                    final Jid trueJid = getTrueCounterpart((query != null && query.safeToExtractTrueCounterpart()) ? mucUserElement : null, fallback);
1056                    final boolean trueJidMatchesAccount = account.getJid().asBareJid().equals(trueJid == null ? null : trueJid.asBareJid());
1057                    if (trueJidMatchesAccount || conversation.getMucOptions().isSelf(counterpart)) {
1058                        if (!message.isRead() && (query == null || query.isCatchup())) { //checking if message is unread fixes race conditions with reflections
1059                            mXmppConnectionService.markReadUpTo(conversation, message);
1060                        }
1061                    } else if (!counterpart.isBareJid() && trueJid != null) {
1062                        final ReadByMarker readByMarker = ReadByMarker.from(counterpart, trueJid);
1063                        if (message.addReadByMarker(readByMarker)) {
1064                            final var mucOptions = conversation.getMucOptions();
1065                            final var everyone = ImmutableSet.copyOf(mucOptions.getMembers(false));
1066                            final var readyBy = message.getReadyByTrue();
1067                            final var mStatus = message.getStatus();
1068                            if (mucOptions.isPrivateAndNonAnonymous()
1069                                    && (mStatus == Message.STATUS_SEND_RECEIVED
1070                                            || mStatus == Message.STATUS_SEND)
1071                                    && readyBy.containsAll(everyone)) {
1072                                message.setStatus(Message.STATUS_SEND_DISPLAYED);
1073                            }
1074                            mXmppConnectionService.updateMessage(message, false);
1075                        }
1076                    }
1077                }
1078            } else {
1079                final Message displayedMessage = mXmppConnectionService.markMessage(account, from.asBareJid(), id, Message.STATUS_SEND_DISPLAYED);
1080                Message message = displayedMessage == null ? null : displayedMessage.prev();
1081                while (message != null
1082                        && message.getStatus() == Message.STATUS_SEND_RECEIVED
1083                        && message.getTimeSent() < displayedMessage.getTimeSent()) {
1084                    mXmppConnectionService.markMessage(message, Message.STATUS_SEND_DISPLAYED);
1085                    message = message.prev();
1086                }
1087                if (displayedMessage != null && selfAddressed) {
1088                    dismissNotification(account, counterpart, query, id);
1089                }
1090            }
1091        }
1092
1093        final Element event = original.findChild("event", "http://jabber.org/protocol/pubsub#event");
1094        if (event != null && InvalidJid.hasValidFrom(original) && original.getFrom().isBareJid()) {
1095            if (event.hasChild("items")) {
1096                parseEvent(event, original.getFrom(), account);
1097            } else if (event.hasChild("delete")) {
1098                parseDeleteEvent(event, original.getFrom(), account);
1099            } else if (event.hasChild("purge")) {
1100                parsePurgeEvent(event, original.getFrom(), account);
1101            }
1102        }
1103
1104        final String nick = packet.findChildContent("nick", Namespace.NICK);
1105        if (nick != null && InvalidJid.hasValidFrom(original)) {
1106            if (mXmppConnectionService.isMuc(account, from)) {
1107                return;
1108            }
1109            final Contact contact = account.getRoster().getContact(from);
1110            if (contact.setPresenceName(nick)) {
1111                mXmppConnectionService.syncRoster(account);
1112                mXmppConnectionService.getAvatarService().clear(contact);
1113            }
1114        }
1115    }
1116
1117    private static Pair<im.conversations.android.xmpp.model.stanza.Message,Long> getForwardedMessagePacket(final im.conversations.android.xmpp.model.stanza.Message original, Class<? extends Extension> clazz) {
1118        final var extension = original.getExtension(clazz);
1119        final var forwarded = extension == null ? null : extension.getExtension(Forwarded.class);
1120        if (forwarded == null) {
1121            return null;
1122        }
1123        final Long timestamp = AbstractParser.parseTimestamp(forwarded, null);
1124        final var forwardedMessage = forwarded.getMessage();
1125        if (forwardedMessage == null) {
1126            return null;
1127        }
1128        return new Pair<>(forwardedMessage,timestamp);
1129    }
1130
1131    private static Pair<im.conversations.android.xmpp.model.stanza.Message,Long> getForwardedMessagePacket(final im.conversations.android.xmpp.model.stanza.Message original, final String name, final String namespace) {
1132        final Element wrapper = original.findChild(name, namespace);
1133        final var forwardedElement = wrapper == null ? null : wrapper.findChild("forwarded",Namespace.FORWARD);
1134        if (forwardedElement instanceof Forwarded forwarded) {
1135            final Long timestamp = AbstractParser.parseTimestamp(forwarded, null);
1136            final var forwardedMessage = forwarded.getMessage();
1137            if (forwardedMessage == null) {
1138                return null;
1139            }
1140            return new Pair<>(forwardedMessage,timestamp);
1141        }
1142        return null;
1143    }
1144
1145    private void dismissNotification(Account account, Jid counterpart, MessageArchiveService.Query query, final String id) {
1146        final Conversation conversation = mXmppConnectionService.find(account, counterpart.asBareJid());
1147        if (conversation != null && (query == null || query.isCatchup())) {
1148            final String displayableId = conversation.findMostRecentRemoteDisplayableId();
1149            if (displayableId != null && displayableId.equals(id)) {
1150                mXmppConnectionService.markRead(conversation);
1151            } else {
1152                Log.w(Config.LOGTAG, account.getJid().asBareJid() + ": received dismissing display marker that did not match our last id in that conversation");
1153            }
1154        }
1155    }
1156
1157    private void processMessageReceipts(final Account account, final im.conversations.android.xmpp.model.stanza.Message packet, final String remoteMsgId, MessageArchiveService.Query query) {
1158        final boolean markable = packet.hasChild("markable", "urn:xmpp:chat-markers:0");
1159        final boolean request = packet.hasChild("request", "urn:xmpp:receipts");
1160        if (query == null) {
1161            final ArrayList<String> receiptsNamespaces = new ArrayList<>();
1162            if (markable) {
1163                receiptsNamespaces.add("urn:xmpp:chat-markers:0");
1164            }
1165            if (request) {
1166                receiptsNamespaces.add("urn:xmpp:receipts");
1167            }
1168            if (receiptsNamespaces.size() > 0) {
1169                final var receipt = mXmppConnectionService.getMessageGenerator().received(account,
1170                        packet.getFrom(),
1171                        remoteMsgId,
1172                        receiptsNamespaces,
1173                        packet.getType());
1174                mXmppConnectionService.sendMessagePacket(account, receipt);
1175            }
1176        } else if (query.isCatchup()) {
1177            if (request) {
1178                query.addPendingReceiptRequest(new ReceiptRequest(packet.getFrom(), remoteMsgId));
1179            }
1180        }
1181    }
1182
1183    private void activateGracePeriod(Account account) {
1184        long duration = mXmppConnectionService.getLongPreference("grace_period_length", R.integer.grace_period) * 1000;
1185        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": activating grace period till " + TIME_FORMAT.format(new Date(System.currentTimeMillis() + duration)));
1186        account.activateGracePeriod(duration);
1187    }
1188
1189    private class Invite {
1190        final Jid jid;
1191        final String password;
1192        final boolean direct;
1193        final Jid inviter;
1194
1195        Invite(Jid jid, String password, boolean direct, Jid inviter) {
1196            this.jid = jid;
1197            this.password = password;
1198            this.direct = direct;
1199            this.inviter = inviter;
1200        }
1201
1202        public boolean execute(final Account account) {
1203            if (this.jid == null) {
1204                return false;
1205            }
1206            final Contact contact =
1207                    this.inviter != null ? account.getRoster().getContact(this.inviter) : null;
1208            if (contact != null && contact.isBlocked()) {
1209                Log.d(
1210                        Config.LOGTAG,
1211                        account.getJid().asBareJid()
1212                                + ": ignore invite from "
1213                                + contact.getJid()
1214                                + " because contact is blocked");
1215                return false;
1216            }
1217            final AppSettings appSettings = new AppSettings(mXmppConnectionService);
1218            if ((contact != null && contact.showInContactList())
1219                    || appSettings.isAcceptInvitesFromStrangers()) {
1220                final Conversation conversation =
1221                        mXmppConnectionService.findOrCreateConversation(account, jid, true, false);
1222                if (conversation.getMucOptions().online()) {
1223                    Log.d(
1224                            Config.LOGTAG,
1225                            account.getJid().asBareJid()
1226                                    + ": received invite to "
1227                                    + jid
1228                                    + " but muc is considered to be online");
1229                    mXmppConnectionService.mucSelfPingAndRejoin(conversation);
1230                } else {
1231                    conversation.getMucOptions().setPassword(password);
1232                    mXmppConnectionService.databaseBackend.updateConversation(conversation);
1233                    mXmppConnectionService.joinMuc(
1234                            conversation, contact != null && contact.showInContactList());
1235                    mXmppConnectionService.updateConversationUi();
1236                }
1237                return true;
1238            } else {
1239                Log.d(
1240                        Config.LOGTAG,
1241                        account.getJid().asBareJid()
1242                                + ": ignoring invite from "
1243                                + this.inviter
1244                                + " because we are not accepting invites from strangers. direct="
1245                                + direct);
1246                return false;
1247            }
1248        }
1249    }
1250}