1package eu.siacs.conversations.parser;
   2
   3import android.net.Uri;
   4import android.util.Log;
   5import android.util.Pair;
   6
   7import com.cheogram.android.BobTransfer;
   8import com.cheogram.android.WebxdcUpdate;
   9
  10import com.google.common.collect.ImmutableSet;
  11
  12import java.io.File;
  13import java.net.URISyntaxException;
  14import java.text.SimpleDateFormat;
  15import java.util.ArrayList;
  16import java.util.Arrays;
  17import java.util.Collections;
  18import java.util.Date;
  19import java.util.LinkedHashSet;
  20import java.util.List;
  21import java.util.Locale;
  22import java.util.Map;
  23import java.util.Set;
  24import java.util.UUID;
  25
  26import io.ipfs.cid.Cid;
  27
  28import eu.siacs.conversations.AppSettings;
  29import eu.siacs.conversations.Config;
  30import eu.siacs.conversations.R;
  31import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  32import eu.siacs.conversations.crypto.axolotl.BrokenSessionException;
  33import eu.siacs.conversations.crypto.axolotl.NotEncryptedForThisDeviceException;
  34import eu.siacs.conversations.crypto.axolotl.OutdatedSenderException;
  35import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage;
  36import eu.siacs.conversations.entities.Account;
  37import eu.siacs.conversations.entities.Bookmark;
  38import eu.siacs.conversations.entities.Contact;
  39import eu.siacs.conversations.entities.Conversation;
  40import eu.siacs.conversations.entities.Conversational;
  41import eu.siacs.conversations.entities.DownloadableFile;
  42import eu.siacs.conversations.entities.Message;
  43import eu.siacs.conversations.entities.MucOptions;
  44import eu.siacs.conversations.entities.ReadByMarker;
  45import eu.siacs.conversations.entities.ReceiptRequest;
  46import eu.siacs.conversations.entities.RtpSessionStatus;
  47import eu.siacs.conversations.http.HttpConnectionManager;
  48import eu.siacs.conversations.services.MessageArchiveService;
  49import eu.siacs.conversations.services.QuickConversationsService;
  50import eu.siacs.conversations.services.XmppConnectionService;
  51import eu.siacs.conversations.utils.CryptoHelper;
  52import eu.siacs.conversations.xml.Element;
  53import eu.siacs.conversations.xml.LocalizedContent;
  54import eu.siacs.conversations.xml.Namespace;
  55import eu.siacs.conversations.xmpp.InvalidJid;
  56import eu.siacs.conversations.xmpp.Jid;
  57import eu.siacs.conversations.xmpp.OnMessagePacketReceived;
  58import eu.siacs.conversations.xmpp.chatstate.ChatState;
  59import eu.siacs.conversations.xmpp.forms.Data;
  60import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
  61import eu.siacs.conversations.xmpp.jingle.JingleRtpConnection;
  62import eu.siacs.conversations.xmpp.pep.Avatar;
  63import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
  64
  65public class MessageParser extends AbstractParser implements OnMessagePacketReceived {
  66
  67    private static final SimpleDateFormat TIME_FORMAT = new SimpleDateFormat("HH:mm:ss", Locale.ENGLISH);
  68
  69    private static final List<String> JINGLE_MESSAGE_ELEMENT_NAMES =
  70            Arrays.asList("accept", "propose", "proceed", "reject", "retract", "ringing", "finish");
  71
  72    public MessageParser(XmppConnectionService service) {
  73        super(service);
  74    }
  75
  76    private static String extractStanzaId(Element packet, boolean isTypeGroupChat, Conversation conversation) {
  77        final Jid by;
  78        final boolean safeToExtract;
  79        if (isTypeGroupChat) {
  80            by = conversation.getJid().asBareJid();
  81            safeToExtract = conversation.getMucOptions().hasFeature(Namespace.STANZA_IDS);
  82        } else {
  83            Account account = conversation.getAccount();
  84            by = account.getJid().asBareJid();
  85            safeToExtract = account.getXmppConnection().getFeatures().stanzaIds();
  86        }
  87        return safeToExtract ? extractStanzaId(packet, by) : null;
  88    }
  89
  90    private static String extractStanzaId(Account account, Element packet) {
  91        final boolean safeToExtract = account.getXmppConnection().getFeatures().stanzaIds();
  92        return safeToExtract ? extractStanzaId(packet, account.getJid().asBareJid()) : null;
  93    }
  94
  95    private static String extractStanzaId(Element packet, Jid by) {
  96        for (Element child : packet.getChildren()) {
  97            if (child.getName().equals("stanza-id")
  98                    && Namespace.STANZA_IDS.equals(child.getNamespace())
  99                    && by.equals(InvalidJid.getNullForInvalid(child.getAttributeAsJid("by")))) {
 100                return child.getAttribute("id");
 101            }
 102        }
 103        return null;
 104    }
 105
 106    private static Jid getTrueCounterpart(Element mucUserElement, Jid fallback) {
 107        final Element item = mucUserElement == null ? null : mucUserElement.findChild("item");
 108        Jid result = item == null ? null : InvalidJid.getNullForInvalid(item.getAttributeAsJid("jid"));
 109        return result != null ? result : fallback;
 110    }
 111
 112    private boolean extractChatState(Conversation c, final boolean isTypeGroupChat, final MessagePacket packet) {
 113        ChatState state = ChatState.parse(packet);
 114        if (state != null && c != null) {
 115            final Account account = c.getAccount();
 116            final Jid from = packet.getFrom();
 117            if (from.asBareJid().equals(account.getJid().asBareJid())) {
 118                c.setOutgoingChatState(state);
 119                if (state == ChatState.ACTIVE || state == ChatState.COMPOSING) {
 120                    if (c.getContact().isSelf()) {
 121                        return false;
 122                    }
 123                    mXmppConnectionService.markRead(c);
 124                    activateGracePeriod(account);
 125                }
 126                return false;
 127            } else {
 128                if (isTypeGroupChat) {
 129                    MucOptions.User user = c.getMucOptions().findUserByFullJid(from);
 130                    if (user != null) {
 131                        return user.setChatState(state);
 132                    } else {
 133                        return false;
 134                    }
 135                } else {
 136                    return c.setIncomingChatState(state);
 137                }
 138            }
 139        }
 140        return false;
 141    }
 142
 143    private Message parseAxolotlChat(Element axolotlMessage, Jid from, Conversation conversation, int status, final boolean checkedForDuplicates, boolean postpone) {
 144        final AxolotlService service = conversation.getAccount().getAxolotlService();
 145        final XmppAxolotlMessage xmppAxolotlMessage;
 146        try {
 147            xmppAxolotlMessage = XmppAxolotlMessage.fromElement(axolotlMessage, from.asBareJid());
 148        } catch (Exception e) {
 149            Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": invalid omemo message received " + e.getMessage());
 150            return null;
 151        }
 152        if (xmppAxolotlMessage.hasPayload()) {
 153            final XmppAxolotlMessage.XmppAxolotlPlaintextMessage plaintextMessage;
 154            try {
 155                plaintextMessage = service.processReceivingPayloadMessage(xmppAxolotlMessage, postpone);
 156            } catch (BrokenSessionException e) {
 157                if (checkedForDuplicates) {
 158                    if (service.trustedOrPreviouslyResponded(from.asBareJid())) {
 159                        service.reportBrokenSessionException(e, postpone);
 160                        return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_FAILED, status);
 161                    } else {
 162                        Log.d(Config.LOGTAG, "ignoring broken session exception because contact was not trusted");
 163                        return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_FAILED, status);
 164                    }
 165                } else {
 166                    Log.d(Config.LOGTAG, "ignoring broken session exception because checkForDuplicates failed");
 167                    return null;
 168                }
 169            } catch (NotEncryptedForThisDeviceException e) {
 170                return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE, status);
 171            } catch (OutdatedSenderException e) {
 172                return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_FAILED, status);
 173            }
 174            if (plaintextMessage != null) {
 175                Message finishedMessage = new Message(conversation, plaintextMessage.getPlaintext(), Message.ENCRYPTION_AXOLOTL, status);
 176                finishedMessage.setFingerprint(plaintextMessage.getFingerprint());
 177                Log.d(Config.LOGTAG, AxolotlService.getLogprefix(finishedMessage.getConversation().getAccount()) + " Received Message with session fingerprint: " + plaintextMessage.getFingerprint());
 178                return finishedMessage;
 179            }
 180        } else {
 181            Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": received OMEMO key transport message");
 182            service.processReceivingKeyTransportMessage(xmppAxolotlMessage, postpone);
 183        }
 184        return null;
 185    }
 186
 187    private Invite extractInvite(final Element message) {
 188        final Element mucUser = message.findChild("x", Namespace.MUC_USER);
 189        if (mucUser != null) {
 190            final Element invite = mucUser.findChild("invite");
 191            if (invite != null) {
 192                final String password = mucUser.findChildContent("password");
 193                final Jid from = InvalidJid.getNullForInvalid(invite.getAttributeAsJid("from"));
 194                final Jid to = InvalidJid.getNullForInvalid(invite.getAttributeAsJid("to"));
 195                if (to != null && from == null) {
 196                    Log.d(Config.LOGTAG,"do not parse outgoing mediated invite "+message);
 197                    return null;
 198                }
 199                final Jid room = InvalidJid.getNullForInvalid(message.getAttributeAsJid("from"));
 200                if (room == null) {
 201                    return null;
 202                }
 203                return new Invite(room, password, false, from);
 204            }
 205        }
 206        final Element conference = message.findChild("x", "jabber:x:conference");
 207        if (conference != null) {
 208            Jid from = InvalidJid.getNullForInvalid(message.getAttributeAsJid("from"));
 209            Jid room = InvalidJid.getNullForInvalid(conference.getAttributeAsJid("jid"));
 210            if (room == null) {
 211                return null;
 212            }
 213            return new Invite(room, conference.getAttribute("password"), true, from);
 214        }
 215        return null;
 216    }
 217
 218    private void parseEvent(final Element event, final Jid from, final Account account) {
 219        final Element items = event.findChild("items");
 220        final String node = items == null ? null : items.getAttribute("node");
 221        if ("urn:xmpp:avatar:metadata".equals(node)) {
 222            Avatar avatar = Avatar.parseMetadata(items);
 223            if (avatar != null) {
 224                avatar.owner = from.asBareJid();
 225                if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
 226                    if (account.getJid().asBareJid().equals(from)) {
 227                        if (account.setAvatar(avatar.getFilename())) {
 228                            mXmppConnectionService.databaseBackend.updateAccount(account);
 229                            mXmppConnectionService.notifyAccountAvatarHasChanged(account);
 230                        }
 231                        mXmppConnectionService.getAvatarService().clear(account);
 232                        mXmppConnectionService.updateConversationUi();
 233                        mXmppConnectionService.updateAccountUi();
 234                    } else {
 235                        final Contact contact = account.getRoster().getContact(from);
 236                        contact.setAvatar(avatar);
 237                        mXmppConnectionService.syncRoster(account);
 238                        mXmppConnectionService.getAvatarService().clear(contact);
 239                        mXmppConnectionService.updateConversationUi();
 240                        mXmppConnectionService.updateRosterUi();
 241                    }
 242                } else if (mXmppConnectionService.isDataSaverDisabled()) {
 243                    mXmppConnectionService.fetchAvatar(account, avatar);
 244                }
 245            }
 246        } else if (Namespace.NICK.equals(node)) {
 247            final Element i = items.findChild("item");
 248            final String nick = i == null ? null : i.findChildContent("nick", Namespace.NICK);
 249            if (nick != null) {
 250                setNick(account, from, nick);
 251            }
 252        } else if (AxolotlService.PEP_DEVICE_LIST.equals(node)) {
 253            Element item = items.findChild("item");
 254            Set<Integer> deviceIds = mXmppConnectionService.getIqParser().deviceIds(item);
 255            Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account) + "Received PEP device list " + deviceIds + " update from " + from + ", processing... ");
 256            final AxolotlService axolotlService = account.getAxolotlService();
 257            axolotlService.registerDevices(from, deviceIds);
 258        } else if (Namespace.BOOKMARKS.equals(node) && account.getJid().asBareJid().equals(from)) {
 259            final var connection = account.getXmppConnection();
 260            if (connection.getFeatures().bookmarksConversion()) {
 261                if (connection.getFeatures().bookmarks2()) {
 262                    Log.w(
 263                            Config.LOGTAG,
 264                            account.getJid().asBareJid()
 265                                    + ": received storage:bookmark notification even though we opted into bookmarks:1");
 266                }
 267                final Element i = items.findChild("item");
 268                final Element storage =
 269                        i == null ? null : i.findChild("storage", Namespace.BOOKMARKS);
 270                final Map<Jid, Bookmark> bookmarks = Bookmark.parseFromStorage(storage, account);
 271                mXmppConnectionService.processBookmarksInitial(account, bookmarks, true);
 272                Log.d(
 273                        Config.LOGTAG,
 274                        account.getJid().asBareJid() + ": processing bookmark PEP event");
 275            } else {
 276                Log.d(
 277                        Config.LOGTAG,
 278                        account.getJid().asBareJid()
 279                                + ": ignoring bookmark PEP event because bookmark conversion was not detected");
 280            }
 281        } else if (Namespace.BOOKMARKS2.equals(node) && account.getJid().asBareJid().equals(from)) {
 282            final Element item = items.findChild("item");
 283            final Element retract = items.findChild("retract");
 284            if (item != null) {
 285                final Bookmark bookmark = Bookmark.parseFromItem(item, account);
 286                if (bookmark != null) {
 287                    account.putBookmark(bookmark);
 288                    mXmppConnectionService.processModifiedBookmark(bookmark);
 289                    mXmppConnectionService.updateConversationUi();
 290                }
 291            }
 292            if (retract != null) {
 293                final Jid id = InvalidJid.getNullForInvalid(retract.getAttributeAsJid("id"));
 294                if (id != null) {
 295                    account.removeBookmark(id);
 296                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": deleted bookmark for " + id);
 297                    mXmppConnectionService.processDeletedBookmark(account, id);
 298                    mXmppConnectionService.updateConversationUi();
 299                }
 300            }
 301        } else if (Config.MESSAGE_DISPLAYED_SYNCHRONIZATION
 302                && Namespace.MDS_DISPLAYED.equals(node)
 303                && account.getJid().asBareJid().equals(from)) {
 304            final Element item = items.findChild("item");
 305            mXmppConnectionService.processMdsItem(account, item);
 306        } else {
 307            Log.d(
 308                    Config.LOGTAG,
 309                    account.getJid().asBareJid()
 310                            + " received pubsub notification for node="
 311                            + node);
 312        }
 313    }
 314
 315    private void parseDeleteEvent(final Element event, final Jid from, final Account account) {
 316        final Element delete = event.findChild("delete");
 317        final String node = delete == null ? null : delete.getAttribute("node");
 318        if (Namespace.NICK.equals(node)) {
 319            Log.d(Config.LOGTAG, "parsing nick delete event from " + from);
 320            setNick(account, from, null);
 321        } else if (Namespace.BOOKMARKS2.equals(node) && account.getJid().asBareJid().equals(from)) {
 322            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": deleted bookmarks node");
 323            deleteAllBookmarks(account);
 324        } else if (Namespace.AVATAR_METADATA.equals(node) && account.getJid().asBareJid().equals(from)) {
 325            Log.d(Config.LOGTAG,account.getJid().asBareJid()+": deleted avatar metadata node");
 326        }
 327    }
 328
 329    private void parsePurgeEvent(final Element event, final Jid from, final Account account) {
 330        final Element purge = event.findChild("purge");
 331        final String node = purge == null ? null : purge.getAttribute("node");
 332        if (Namespace.BOOKMARKS2.equals(node) && account.getJid().asBareJid().equals(from)) {
 333            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": purged bookmarks");
 334            deleteAllBookmarks(account);
 335        }
 336    }
 337
 338    private void deleteAllBookmarks(final Account account) {
 339        final var previous = account.getBookmarkedJids();
 340        account.setBookmarks(Collections.emptyMap());
 341        mXmppConnectionService.processDeletedBookmarks(account, previous);
 342    }
 343
 344    private void setNick(Account account, Jid user, String nick) {
 345        if (user.asBareJid().equals(account.getJid().asBareJid())) {
 346            account.setDisplayName(nick);
 347            if (QuickConversationsService.isQuicksy()) {
 348                mXmppConnectionService.getAvatarService().clear(account);
 349            }
 350        } else {
 351            Contact contact = account.getRoster().getContact(user);
 352            if (contact.setPresenceName(nick)) {
 353                mXmppConnectionService.syncRoster(account);
 354                mXmppConnectionService.getAvatarService().clear(contact);
 355            }
 356        }
 357        mXmppConnectionService.updateConversationUi();
 358        mXmppConnectionService.updateAccountUi();
 359    }
 360
 361    private boolean handleErrorMessage(final Account account, final MessagePacket packet) {
 362        if (packet.getType() == MessagePacket.TYPE_ERROR) {
 363            if (packet.fromServer(account)) {
 364                final Pair<MessagePacket, Long> forwarded = packet.getForwardedMessagePacket("received", Namespace.CARBONS);
 365                if (forwarded != null) {
 366                    return handleErrorMessage(account, forwarded.first);
 367                }
 368            }
 369            final Jid from = packet.getFrom();
 370            final String id = packet.getId();
 371            if (from != null && id != null) {
 372                if (id.startsWith(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX)) {
 373                    final String sessionId = id.substring(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX.length());
 374                    mXmppConnectionService.getJingleConnectionManager()
 375                            .updateProposedSessionDiscovered(account, from, sessionId, JingleConnectionManager.DeviceDiscoveryState.FAILED);
 376                    return true;
 377                }
 378                if (id.startsWith(JingleRtpConnection.JINGLE_MESSAGE_PROCEED_ID_PREFIX)) {
 379                    final String sessionId = id.substring(JingleRtpConnection.JINGLE_MESSAGE_PROCEED_ID_PREFIX.length());
 380                    final String message = extractErrorMessage(packet);
 381                    mXmppConnectionService.getJingleConnectionManager().failProceed(account, from, sessionId, message);
 382                    return true;
 383                }
 384                mXmppConnectionService.markMessage(account,
 385                        from.asBareJid(),
 386                        id,
 387                        Message.STATUS_SEND_FAILED,
 388                        extractErrorMessage(packet));
 389                final Element error = packet.findChild("error");
 390                final boolean pingWorthyError = error != null && (error.hasChild("not-acceptable") || error.hasChild("remote-server-timeout") || error.hasChild("remote-server-not-found"));
 391                if (pingWorthyError) {
 392                    Conversation conversation = mXmppConnectionService.find(account, from);
 393                    if (conversation != null && conversation.getMode() == Conversational.MODE_MULTI) {
 394                        if (conversation.getMucOptions().online()) {
 395                            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received ping worthy error for seemingly online muc at " + from);
 396                            mXmppConnectionService.mucSelfPingAndRejoin(conversation);
 397                        }
 398                    }
 399                }
 400            }
 401            return true;
 402        }
 403        return false;
 404    }
 405
 406    @Override
 407    public void onMessagePacketReceived(Account account, MessagePacket original) {
 408        if (handleErrorMessage(account, original)) {
 409            return;
 410        }
 411        final MessagePacket packet;
 412        Long timestamp = null;
 413        boolean isCarbon = false;
 414        String serverMsgId = null;
 415        final Element fin = original.findChild("fin", MessageArchiveService.Version.MAM_0.namespace);
 416        if (fin != null) {
 417            mXmppConnectionService.getMessageArchiveService().processFinLegacy(fin, original.getFrom());
 418            return;
 419        }
 420        final Element result = MessageArchiveService.Version.findResult(original);
 421        final String queryId = result == null ? null : result.getAttribute("queryid");
 422        final MessageArchiveService.Query query = queryId == null ? null : mXmppConnectionService.getMessageArchiveService().findQuery(queryId);
 423        final boolean offlineMessagesRetrieved = account.getXmppConnection().isOfflineMessagesRetrieved();
 424        if (query != null && query.validFrom(original.getFrom())) {
 425            final Pair<MessagePacket, Long> f = original.getForwardedMessagePacket("result", query.version.namespace);
 426            if (f == null) {
 427                return;
 428            }
 429            timestamp = f.second;
 430            packet = f.first;
 431            serverMsgId = result.getAttribute("id");
 432            query.incrementMessageCount();
 433            if (handleErrorMessage(account, packet)) {
 434                return;
 435            }
 436        } else if (query != null) {
 437            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received mam result with invalid from (" + original.getFrom() + ") or queryId (" + queryId + ")");
 438            return;
 439        } else if (original.fromServer(account)) {
 440            Pair<MessagePacket, Long> f;
 441            f = original.getForwardedMessagePacket("received", Namespace.CARBONS);
 442            f = f == null ? original.getForwardedMessagePacket("sent", Namespace.CARBONS) : f;
 443            packet = f != null ? f.first : original;
 444            if (handleErrorMessage(account, packet)) {
 445                return;
 446            }
 447            timestamp = f != null ? f.second : null;
 448            isCarbon = f != null;
 449        } else {
 450            packet = original;
 451        }
 452
 453        if (timestamp == null) {
 454            timestamp = AbstractParser.parseTimestamp(original, AbstractParser.parseTimestamp(packet));
 455        }
 456        final Element mucUserElement = packet.findChild("x", Namespace.MUC_USER);
 457        final String pgpEncrypted = packet.findChildContent("x", "jabber:x:encrypted");
 458        Element replaceElement = packet.findChild("replace", "urn:xmpp:message-correct:0");
 459        Set<Message.FileParams> attachments = new LinkedHashSet<>();
 460        for (Element child : packet.getChildren()) {
 461            // SIMS first so they get preference in the set
 462            if (child.getName().equals("reference") && child.getNamespace().equals("urn:xmpp:reference:0")) {
 463                if (child.findChild("media-sharing", "urn:xmpp:sims:1") != null) {
 464                    attachments.add(new Message.FileParams(child));
 465                }
 466            }
 467        }
 468        for (Element child : packet.getChildren()) {
 469            if (child.getName().equals("x") && child.getNamespace().equals(Namespace.OOB)) {
 470                attachments.add(new Message.FileParams(child));
 471            }
 472        }
 473        String replacementId = replaceElement == null ? null : replaceElement.getAttribute("id");
 474        if (replacementId == null) {
 475            final Element fasten = packet.findChild("apply-to", "urn:xmpp:fasten:0");
 476            if (fasten != null) {
 477                replaceElement = fasten.findChild("retract", "urn:xmpp:message-retract:0");
 478                if (replaceElement == null) replaceElement = fasten.findChild("moderated", "urn:xmpp:message-moderate:0");
 479                if (replaceElement != null) {
 480                    final String reason = replaceElement.findChildContent("reason", "urn:xmpp:message-moderate:0");
 481                    replacementId = fasten.getAttribute("id");
 482                    packet.setBody(reason == null ? "" : reason);
 483                }
 484            }
 485        }
 486        LocalizedContent body = packet.getBody();
 487
 488        final Element axolotlEncrypted = packet.findChildEnsureSingle(XmppAxolotlMessage.CONTAINERTAG, AxolotlService.PEP_PREFIX);
 489        int status;
 490        final Jid counterpart;
 491        final Jid to = packet.getTo();
 492        final Jid from = packet.getFrom();
 493        final Element originId = packet.findChild("origin-id", Namespace.STANZA_IDS);
 494        final String remoteMsgId;
 495        if (originId != null && originId.getAttribute("id") != null) {
 496            remoteMsgId = originId.getAttribute("id");
 497        } else {
 498            remoteMsgId = packet.getId();
 499        }
 500        boolean notify = false;
 501
 502        Element html = packet.findChild("html", "http://jabber.org/protocol/xhtml-im");
 503        if (html != null && html.findChild("body", "http://www.w3.org/1999/xhtml") == null) {
 504            html = null;
 505        }
 506
 507        if (from == null || !InvalidJid.isValid(from) || !InvalidJid.isValid(to)) {
 508            Log.e(Config.LOGTAG, "encountered invalid message from='" + from + "' to='" + to + "'");
 509            return;
 510        }
 511
 512        boolean isTypeGroupChat = packet.getType() == MessagePacket.TYPE_GROUPCHAT;
 513        if (query != null && !query.muc() && isTypeGroupChat) {
 514            Log.e(Config.LOGTAG, account.getJid().asBareJid() + ": received groupchat (" + from + ") message on regular MAM request. skipping");
 515            return;
 516        }
 517        boolean isMucStatusMessage = InvalidJid.hasValidFrom(packet) && from.isBareJid() && mucUserElement != null && mucUserElement.hasChild("status");
 518        boolean selfAddressed;
 519        if (packet.fromAccount(account)) {
 520            status = Message.STATUS_SEND;
 521            selfAddressed = to == null || account.getJid().asBareJid().equals(to.asBareJid());
 522            if (selfAddressed) {
 523                counterpart = from;
 524            } else {
 525                counterpart = to != null ? to : account.getJid();
 526            }
 527        } else {
 528            status = Message.STATUS_RECEIVED;
 529            counterpart = from;
 530            selfAddressed = false;
 531        }
 532
 533        final Invite invite = extractInvite(packet);
 534        if (invite != null) {
 535            if (invite.jid.asBareJid().equals(account.getJid().asBareJid())) {
 536                Log.d(Config.LOGTAG,account.getJid().asBareJid()+": ignore invite to "+invite.jid+" because it matches account");
 537            } else if (isTypeGroupChat) {
 538                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignoring invite to " + invite.jid + " because it was received as group chat");
 539            } else if (invite.direct && (mucUserElement != null || invite.inviter == null || mXmppConnectionService.isMuc(account, invite.inviter))) {
 540                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ignoring direct invite to " + invite.jid + " because it was received in MUC");
 541            } else {
 542                invite.execute(account);
 543                return;
 544            }
 545        }
 546
 547        final Element reactions = packet.findChild("reactions", "urn:xmpp:reactions:0");
 548        if (body == null && html == null) {
 549            if (reactions != null && reactions.getAttribute("id") != null) {
 550                final Conversation conversation = mXmppConnectionService.find(account, counterpart.asBareJid());
 551                if (conversation != null) {
 552                    final Message reactionTo = conversation.findMessageWithRemoteIdAndCounterpart(reactions.getAttribute("id"), null);
 553                    if (reactionTo != null) {
 554                        String bodyS = reactionTo.reply().getBody();
 555                        for (Element el : reactions.getChildren()) {
 556                            if (el.getName().equals("reaction") && el.getNamespace().equals("urn:xmpp:reactions:0")) {
 557                                bodyS += el.getContent();
 558                            }
 559                        }
 560                        body = new LocalizedContent(bodyS, "en", 1);
 561                        final Message previousReaction = conversation.findMessageReactingTo(reactions.getAttribute("id"), counterpart);
 562                        if (previousReaction != null) replacementId = previousReaction.replyId();
 563                    }
 564                }
 565            }
 566        }
 567
 568        final boolean conversationIsProbablyMuc = isTypeGroupChat || mucUserElement != null || account.getXmppConnection().getMucServersWithholdAccount().contains(counterpart.getDomain().toEscapedString());
 569        final Element webxdc = packet.findChild("x", "urn:xmpp:webxdc:0");
 570        final Element thread = packet.findChild("thread");
 571        if (webxdc != null && thread != null) {
 572            final Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), conversationIsProbablyMuc, false, query, false);
 573            Jid webxdcSender = counterpart.asBareJid();
 574            if (conversation.getMode() == Conversation.MODE_MULTI) {
 575                if(conversation.getMucOptions().nonanonymous()) {
 576                    webxdcSender = conversation.getMucOptions().getTrueCounterpart(counterpart);
 577                } else {
 578                    webxdcSender = counterpart;
 579                }
 580            }
 581            mXmppConnectionService.insertWebxdcUpdate(new WebxdcUpdate(
 582                conversation,
 583                remoteMsgId,
 584                counterpart,
 585                thread,
 586                body == null ? null : body.content,
 587                webxdc.findChildContent("document", "urn:xmpp:webxdc:0"),
 588                webxdc.findChildContent("summary", "urn:xmpp:webxdc:0"),
 589                webxdc.findChildContent("json", "urn:xmpp:json:0")
 590            ));
 591
 592            mXmppConnectionService.updateConversationUi();
 593        }
 594
 595        // Basic visibility for voice requests
 596        if (body == null && html == null && pgpEncrypted == null && axolotlEncrypted == null && !isMucStatusMessage) {
 597            final Element formEl = packet.findChild("x", "jabber:x:data");
 598            if (formEl != null) {
 599                final Data form = Data.parse(formEl);
 600                final String role = form.getValue("muc#role");
 601                final String nick = form.getValue("muc#roomnick");
 602                if ("http://jabber.org/protocol/muc#request".equals(form.getFormType()) && "participant".equals(role)) {
 603                    body = new LocalizedContent("" + nick + " is requesting to speak", "en", 1);
 604                }
 605            }
 606        }
 607
 608        if ((body != null || pgpEncrypted != null || (axolotlEncrypted != null && axolotlEncrypted.hasChild("payload")) || !attachments.isEmpty() || html != null || (packet.hasChild("subject") && packet.hasChild("thread"))) && !isMucStatusMessage) {
 609            final Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), conversationIsProbablyMuc, false, query, false);
 610            final boolean conversationMultiMode = conversation.getMode() == Conversation.MODE_MULTI;
 611
 612            if (serverMsgId == null) {
 613                serverMsgId = extractStanzaId(packet, isTypeGroupChat, conversation);
 614            }
 615
 616
 617            if (selfAddressed) {
 618                if (mXmppConnectionService.markMessage(conversation, remoteMsgId, Message.STATUS_SEND_RECEIVED, serverMsgId)) {
 619                    return;
 620                }
 621                status = Message.STATUS_RECEIVED;
 622                if (remoteMsgId != null && conversation.findMessageWithRemoteId(remoteMsgId, counterpart) != null) {
 623                    return;
 624                }
 625            }
 626
 627            if (isTypeGroupChat) {
 628                if (conversation.getMucOptions().isSelf(counterpart)) {
 629                    status = Message.STATUS_SEND_RECEIVED;
 630                    isCarbon = true; //not really carbon but received from another resource
 631                    if (mXmppConnectionService.markMessage(conversation, remoteMsgId, status, serverMsgId, body, html)) {
 632                        return;
 633                    } else if (remoteMsgId == null || Config.IGNORE_ID_REWRITE_IN_MUC) {
 634                        if (body != null) {
 635                            Message message = conversation.findSentMessageWithBody(body.content);
 636                            if (message != null) {
 637                                mXmppConnectionService.markMessage(message, status);
 638                                return;
 639                            }
 640                        }
 641                    }
 642                } else {
 643                    status = Message.STATUS_RECEIVED;
 644                }
 645            }
 646            final Message message;
 647            if (pgpEncrypted != null && Config.supportOpenPgp()) {
 648                message = new Message(conversation, pgpEncrypted, Message.ENCRYPTION_PGP, status);
 649            } else if (axolotlEncrypted != null && Config.supportOmemo()) {
 650                Jid origin;
 651                Set<Jid> fallbacksBySourceId = Collections.emptySet();
 652                if (conversationMultiMode) {
 653                    final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 654                    origin = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
 655                    if (origin == null) {
 656                        try {
 657                            fallbacksBySourceId = account.getAxolotlService().findCounterpartsBySourceId(XmppAxolotlMessage.parseSourceId(axolotlEncrypted));
 658                        } catch (IllegalArgumentException e) {
 659                            //ignoring
 660                        }
 661                    }
 662                    if (origin == null && fallbacksBySourceId.size() == 0) {
 663                        Log.d(Config.LOGTAG, "axolotl message in anonymous conference received and no possible fallbacks");
 664                        return;
 665                    }
 666                } else {
 667                    fallbacksBySourceId = Collections.emptySet();
 668                    origin = from;
 669                }
 670
 671                final boolean liveMessage = query == null && !isTypeGroupChat && mucUserElement == null;
 672                final boolean checkedForDuplicates = liveMessage || (serverMsgId != null && remoteMsgId != null && !conversation.possibleDuplicate(serverMsgId, remoteMsgId));
 673
 674                if (origin != null) {
 675                    message = parseAxolotlChat(axolotlEncrypted, origin, conversation, status, checkedForDuplicates, query != null);
 676                } else {
 677                    Message trial = null;
 678                    for (Jid fallback : fallbacksBySourceId) {
 679                        trial = parseAxolotlChat(axolotlEncrypted, fallback, conversation, status, checkedForDuplicates && fallbacksBySourceId.size() == 1, query != null);
 680                        if (trial != null) {
 681                            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": decoded muc message using fallback");
 682                            origin = fallback;
 683                            break;
 684                        }
 685                    }
 686                    message = trial;
 687                }
 688                if (message == null) {
 689                    if (query == null && extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet)) {
 690                        mXmppConnectionService.updateConversationUi();
 691                    }
 692                    if (query != null && status == Message.STATUS_SEND && remoteMsgId != null) {
 693                        Message previouslySent = conversation.findSentMessageWithUuid(remoteMsgId);
 694                        if (previouslySent != null && previouslySent.getServerMsgId() == null && serverMsgId != null) {
 695                            previouslySent.setServerMsgId(serverMsgId);
 696                            mXmppConnectionService.databaseBackend.updateMessage(previouslySent, false);
 697                            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": encountered previously sent OMEMO message without serverId. updating...");
 698                        }
 699                    }
 700                    return;
 701                }
 702                if (conversationMultiMode) {
 703                    message.setTrueCounterpart(origin);
 704                }
 705            } else if (body == null && !attachments.isEmpty()) {
 706                message = new Message(conversation, "", Message.ENCRYPTION_NONE, status);
 707            } else {
 708                message = new Message(conversation, body == null ? null : body.content, Message.ENCRYPTION_NONE, status);
 709                if (body != null && body.count > 1) {
 710                    message.setBodyLanguage(body.language);
 711                }
 712            }
 713
 714            Element addresses = packet.findChild("addresses", "http://jabber.org/protocol/address");
 715            if (status == Message.STATUS_RECEIVED && addresses != null) {
 716                for (Element address : addresses.getChildren()) {
 717                    if (!address.getName().equals("address") || !address.getNamespace().equals("http://jabber.org/protocol/address")) continue;
 718
 719                    if (address.getAttribute("type").equals("ofrom") && address.getAttribute("jid") != null) {
 720                        Jid ofrom = address.getAttributeAsJid("jid");
 721                        if (InvalidJid.isValid(ofrom) && ofrom.getDomain().equals(counterpart.getDomain()) &&
 722                            conversation.getAccount().getRoster().getContact(counterpart.getDomain()).getPresences().anySupport("http://jabber.org/protocol/address")) {
 723
 724                            message.setTrueCounterpart(ofrom);
 725                        }
 726                    }
 727                }
 728            }
 729
 730            if (html != null) message.addPayload(html);
 731            message.setSubject(packet.findChildContent("subject"));
 732            message.setCounterpart(counterpart);
 733            message.setRemoteMsgId(remoteMsgId);
 734            message.setServerMsgId(serverMsgId);
 735            message.setCarbon(isCarbon);
 736            message.setTime(timestamp);
 737            if (!attachments.isEmpty()) {
 738                message.setFileParams(attachments.iterator().next());
 739                if (CryptoHelper.isPgpEncryptedUrl(message.getFileParams().url)) {
 740                    message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 741                }
 742            }
 743            message.markable = packet.hasChild("markable", "urn:xmpp:chat-markers:0");
 744            if (reactions != null) message.addPayload(reactions);
 745            for (Element el : packet.getChildren()) {
 746                if ((el.getName().equals("query") && el.getNamespace().equals("http://jabber.org/protocol/disco#items") && el.getAttribute("node").equals("http://jabber.org/protocol/commands")) ||
 747                    (el.getName().equals("fallback") && el.getNamespace().equals("urn:xmpp:fallback:0"))) {
 748                    message.addPayload(el);
 749                }
 750                if (el.getName().equals("thread") && (el.getNamespace() == null || el.getNamespace().equals("jabber:client"))) {
 751                    el.setAttribute("xmlns", "jabber:client");
 752                    message.addPayload(el);
 753                }
 754                if (el.getName().equals("reply") && el.getNamespace() != null && el.getNamespace().equals("urn:xmpp:reply:0")) {
 755                    message.addPayload(el);
 756                }
 757                if (el.getName().equals("attention") && el.getNamespace() != null && el.getNamespace().equals("urn:xmpp:attention:0")) {
 758                    message.addPayload(el);
 759                }
 760            }
 761            if (conversationMultiMode) {
 762                message.setMucUser(conversation.getMucOptions().findUserByFullJid(counterpart));
 763                final Element occupantId = packet.findChild("occupant-id", "urn:xmpp:occupant-id:0");
 764                if (occupantId != null) message.setOccupantId(occupantId.getAttribute("id"));
 765                final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 766                Jid trueCounterpart;
 767                if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
 768                    trueCounterpart = message.getTrueCounterpart();
 769                } else if (query != null && query.safeToExtractTrueCounterpart()) {
 770                    trueCounterpart = getTrueCounterpart(mucUserElement, fallback);
 771                } else {
 772                    trueCounterpart = fallback;
 773                }
 774                if (trueCounterpart != null && isTypeGroupChat) {
 775                    if (trueCounterpart.asBareJid().equals(account.getJid().asBareJid())) {
 776                        status = isTypeGroupChat ? Message.STATUS_SEND_RECEIVED : Message.STATUS_SEND;
 777                    } else {
 778                        status = Message.STATUS_RECEIVED;
 779                        message.setCarbon(false);
 780                    }
 781                }
 782                message.setStatus(status);
 783                message.setTrueCounterpart(trueCounterpart);
 784                if (!isTypeGroupChat) {
 785                    message.setType(Message.TYPE_PRIVATE);
 786                }
 787            } else {
 788                updateLastseen(account, from);
 789            }
 790
 791            if (replacementId != null && mXmppConnectionService.allowMessageCorrection()) {
 792                final Message replacedMessage = conversation.findMessageWithRemoteIdAndCounterpart(replacementId, counterpart);
 793                if (replacedMessage != null) {
 794                    final boolean fingerprintsMatch = replacedMessage.getFingerprint() == null
 795                            || replacedMessage.getFingerprint().equals(message.getFingerprint());
 796                    final boolean trueCountersMatch = replacedMessage.getTrueCounterpart() != null
 797                            && message.getTrueCounterpart() != null
 798                            && replacedMessage.getTrueCounterpart().asBareJid().equals(message.getTrueCounterpart().asBareJid());
 799                    final boolean mucUserMatches = query == null && replacedMessage.sameMucUser(message); //can not be checked when using mam
 800                    final boolean duplicate = conversation.hasDuplicateMessage(message);
 801                    if (fingerprintsMatch && (trueCountersMatch || !conversationMultiMode || mucUserMatches || counterpart.isBareJid()) && !duplicate) {
 802                        Log.d(Config.LOGTAG, "replaced message '" + replacedMessage.getBody() + "' with '" + message.getBody() + "'");
 803                        synchronized (replacedMessage) {
 804                            final String uuid = replacedMessage.getUuid();
 805                            replacedMessage.setUuid(UUID.randomUUID().toString());
 806                            replacedMessage.setBody(message.getBody());
 807                            replacedMessage.setSubject(message.getSubject());
 808                            replacedMessage.setThread(message.getThread());
 809                            replacedMessage.putEdited(replacedMessage.getRemoteMsgId(), replacedMessage.getServerMsgId());
 810                            replacedMessage.setRemoteMsgId(remoteMsgId);
 811                            if (replaceElement != null && !replaceElement.getName().equals("replace")) {
 812                                mXmppConnectionService.getFileBackend().deleteFile(replacedMessage);
 813                                mXmppConnectionService.evictPreview(message.getUuid());
 814                                List<Element> thumbs = replacedMessage.getFileParams() != null ? replacedMessage.getFileParams().getThumbnails() : null;
 815                                if (thumbs != null && !thumbs.isEmpty()) {
 816                                    for (Element thumb : thumbs) {
 817                                        Uri uri = Uri.parse(thumb.getAttribute("uri"));
 818                                        if (uri.getScheme().equals("cid")) {
 819                                            Cid cid = BobTransfer.cid(uri);
 820                                            if (cid == null) continue;
 821                                            DownloadableFile f = mXmppConnectionService.getFileForCid(cid);
 822                                            if (f != null) {
 823                                                mXmppConnectionService.evictPreview(f);
 824                                                f.delete();
 825                                            }
 826                                        }
 827                                    }
 828                                }
 829                                replacedMessage.clearPayloads();
 830                                replacedMessage.setFileParams(null);
 831                                replacedMessage.addPayload(replaceElement);
 832                            }
 833                            if (replacedMessage.getServerMsgId() == null || message.getServerMsgId() != null) {
 834                                replacedMessage.setServerMsgId(message.getServerMsgId());
 835                            }
 836                            replacedMessage.setEncryption(message.getEncryption());
 837                            if (replacedMessage.getStatus() == Message.STATUS_RECEIVED) {
 838                                replacedMessage.markUnread();
 839                            }
 840                            extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet);
 841                            mXmppConnectionService.updateMessage(replacedMessage, uuid);
 842                            if (mXmppConnectionService.confirmMessages()
 843                                    && replacedMessage.getStatus() == Message.STATUS_RECEIVED
 844                                    && (replacedMessage.trusted() || replacedMessage.isPrivateMessage()) //TODO do we really want to send receipts for all PMs?
 845                                    && remoteMsgId != null
 846                                    && !selfAddressed
 847                                    && !isTypeGroupChat) {
 848                                processMessageReceipts(account, packet, remoteMsgId, query);
 849                            }
 850                            if (replacedMessage.getEncryption() == Message.ENCRYPTION_PGP) {
 851                                conversation.getAccount().getPgpDecryptionService().discard(replacedMessage);
 852                                conversation.getAccount().getPgpDecryptionService().decrypt(replacedMessage, false);
 853                            }
 854                        }
 855                        mXmppConnectionService.getNotificationService().updateNotification();
 856                        return;
 857                    } else {
 858                        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received message correction but verification didn't check out");
 859                    }
 860                } else if (message.getBody() == null || message.getBody().equals("") || message.getBody().equals(" ")) {
 861                    return;
 862                }
 863                if (replaceElement != null && !replaceElement.getName().equals("replace")) return;
 864            }
 865
 866            boolean checkForDuplicates = (isTypeGroupChat && packet.hasChild("delay", "urn:xmpp:delay"))
 867                    || message.isPrivateMessage()
 868                    || message.getServerMsgId() != null
 869                    || (query == null && mXmppConnectionService.getMessageArchiveService().isCatchupInProgress(conversation));
 870            if (checkForDuplicates) {
 871                final Message duplicate = conversation.findDuplicateMessage(message);
 872                if (duplicate != null) {
 873                    final boolean serverMsgIdUpdated;
 874                    if (duplicate.getStatus() != Message.STATUS_RECEIVED
 875                            && duplicate.getUuid().equals(message.getRemoteMsgId())
 876                            && duplicate.getServerMsgId() == null
 877                            && message.getServerMsgId() != null) {
 878                        duplicate.setServerMsgId(message.getServerMsgId());
 879                        if (mXmppConnectionService.databaseBackend.updateMessage(duplicate, false)) {
 880                            serverMsgIdUpdated = true;
 881                        } else {
 882                            serverMsgIdUpdated = false;
 883                            Log.e(Config.LOGTAG, "failed to update message");
 884                        }
 885                    } else {
 886                        serverMsgIdUpdated = false;
 887                    }
 888                    Log.d(Config.LOGTAG, "skipping duplicate message with " + message.getCounterpart() + ". serverMsgIdUpdated=" + serverMsgIdUpdated);
 889                    return;
 890                }
 891            }
 892
 893            if (query != null && query.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) {
 894                conversation.prepend(query.getActualInThisQuery(), message);
 895            } else {
 896                conversation.add(message);
 897            }
 898            if (query != null) {
 899                query.incrementActualMessageCount();
 900            }
 901
 902            if (query == null || query.isCatchup()) { //either no mam or catchup
 903                if (status == Message.STATUS_SEND || status == Message.STATUS_SEND_RECEIVED) {
 904                    mXmppConnectionService.markRead(conversation);
 905                    if (query == null) {
 906                        activateGracePeriod(account);
 907                    }
 908                } else {
 909                    message.markUnread();
 910                    notify = true;
 911                }
 912            }
 913
 914            if (message.getEncryption() == Message.ENCRYPTION_PGP) {
 915                notify = conversation.getAccount().getPgpDecryptionService().decrypt(message, notify);
 916            } else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE || message.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
 917                notify = false;
 918            }
 919
 920            if (query == null) {
 921                extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet);
 922                mXmppConnectionService.updateConversationUi();
 923            }
 924
 925            if (mXmppConnectionService.confirmMessages()
 926                    && message.getStatus() == Message.STATUS_RECEIVED
 927                    && (message.trusted() || message.isPrivateMessage())
 928                    && remoteMsgId != null
 929                    && !selfAddressed
 930                    && !isTypeGroupChat) {
 931                processMessageReceipts(account, packet, remoteMsgId, query);
 932            }
 933
 934            if (message.getFileParams() != null) {
 935                for (Cid cid : message.getFileParams().getCids()) {
 936                    File f = mXmppConnectionService.getFileForCid(cid);
 937                    if (f != null && f.canRead()) {
 938                        message.setRelativeFilePath(f.getAbsolutePath());
 939                        mXmppConnectionService.getFileBackend().updateFileParams(message, null, false);
 940                        break;
 941                    }
 942                }
 943            }
 944
 945            mXmppConnectionService.databaseBackend.createMessage(message);
 946
 947            final HttpConnectionManager manager = this.mXmppConnectionService.getHttpConnectionManager();
 948            if (message.getRelativeFilePath() == null && message.trusted() && message.treatAsDownloadable() && manager.getAutoAcceptFileSize() > 0) {
 949                if (message.getOob() != null && "cid".equalsIgnoreCase(message.getOob().getScheme())) {
 950                    try {
 951                        BobTransfer transfer = new BobTransfer.ForMessage(message, mXmppConnectionService);
 952                        message.setTransferable(transfer);
 953                        transfer.start();
 954                    } catch (URISyntaxException e) {
 955                        Log.d(Config.LOGTAG, "BobTransfer failed to parse URI");
 956                    }
 957                } else {
 958                    manager.createNewDownloadConnection(message);
 959                }
 960            } else if (notify) {
 961                if (query != null && query.isCatchup()) {
 962                    mXmppConnectionService.getNotificationService().pushFromBacklog(message);
 963                } else {
 964                    mXmppConnectionService.getNotificationService().push(message);
 965                }
 966            }
 967        } else if (!packet.hasChild("body")) { //no body
 968
 969            final Conversation conversation = mXmppConnectionService.find(account, from.asBareJid());
 970            if (axolotlEncrypted != null) {
 971                Jid origin;
 972                if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
 973                    final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
 974                    origin = getTrueCounterpart(query != null ? mucUserElement : null, fallback);
 975                    if (origin == null) {
 976                        Log.d(Config.LOGTAG, "omemo key transport message in anonymous conference received");
 977                        return;
 978                    }
 979                } else if (isTypeGroupChat) {
 980                    return;
 981                } else {
 982                    origin = from;
 983                }
 984                try {
 985                    final XmppAxolotlMessage xmppAxolotlMessage = XmppAxolotlMessage.fromElement(axolotlEncrypted, origin.asBareJid());
 986                    account.getAxolotlService().processReceivingKeyTransportMessage(xmppAxolotlMessage, query != null);
 987                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": omemo key transport message received from " + origin);
 988                } catch (Exception e) {
 989                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": invalid omemo key transport message received " + e.getMessage());
 990                    return;
 991                }
 992            }
 993
 994            if (query == null && extractChatState(mXmppConnectionService.find(account, counterpart.asBareJid()), isTypeGroupChat, packet)) {
 995                mXmppConnectionService.updateConversationUi();
 996            }
 997
 998            if (isTypeGroupChat) {
 999                if (packet.hasChild("subject") && !packet.hasChild("thread")) { // We already know it has no body per above
1000                    if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) {
1001                        conversation.setHasMessagesLeftOnServer(conversation.countMessages() > 0);
1002                        final LocalizedContent subject = packet.findInternationalizedChildContentInDefaultNamespace("subject");
1003                        if (subject != null && conversation.getMucOptions().setSubject(subject.content)) {
1004                            mXmppConnectionService.updateConversation(conversation);
1005                        }
1006                        mXmppConnectionService.updateConversationUi();
1007                        return;
1008                    }
1009                }
1010            }
1011            if (conversation != null && mucUserElement != null && InvalidJid.hasValidFrom(packet) && from.isBareJid()) {
1012                for (Element child : mucUserElement.getChildren()) {
1013                    if ("status".equals(child.getName())) {
1014                        try {
1015                            int code = Integer.parseInt(child.getAttribute("code"));
1016                            if ((code >= 170 && code <= 174) || (code >= 102 && code <= 104)) {
1017                                mXmppConnectionService.fetchConferenceConfiguration(conversation);
1018                                break;
1019                            }
1020                        } catch (Exception e) {
1021                            //ignored
1022                        }
1023                    } else if ("item".equals(child.getName())) {
1024                        MucOptions.User user = AbstractParser.parseItem(conversation, child);
1025                        Log.d(Config.LOGTAG, account.getJid() + ": changing affiliation for "
1026                                + user.getRealJid() + " to " + user.getAffiliation() + " in "
1027                                + conversation.getJid().asBareJid());
1028                        if (!user.realJidMatchesAccount()) {
1029                            boolean isNew = conversation.getMucOptions().updateUser(user);
1030                            mXmppConnectionService.getAvatarService().clear(conversation);
1031                            mXmppConnectionService.updateMucRosterUi();
1032                            mXmppConnectionService.updateConversationUi();
1033                            Contact contact = user.getContact();
1034                            if (!user.getAffiliation().ranks(MucOptions.Affiliation.MEMBER)) {
1035                                Jid jid = user.getRealJid();
1036                                List<Jid> cryptoTargets = conversation.getAcceptedCryptoTargets();
1037                                if (cryptoTargets.remove(user.getRealJid())) {
1038                                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": removed " + jid + " from crypto targets of " + conversation.getName());
1039                                    conversation.setAcceptedCryptoTargets(cryptoTargets);
1040                                    mXmppConnectionService.updateConversation(conversation);
1041                                }
1042                            } else if (isNew
1043                                    && user.getRealJid() != null
1044                                    && conversation.getMucOptions().isPrivateAndNonAnonymous()
1045                                    && (contact == null || !contact.mutualPresenceSubscription())
1046                                    && account.getAxolotlService().hasEmptyDeviceList(user.getRealJid())) {
1047                                account.getAxolotlService().fetchDeviceIds(user.getRealJid());
1048                            }
1049                        }
1050                    }
1051                }
1052            }
1053            if (!isTypeGroupChat) {
1054                for (Element child : packet.getChildren()) {
1055                    if (Namespace.JINGLE_MESSAGE.equals(child.getNamespace()) && JINGLE_MESSAGE_ELEMENT_NAMES.contains(child.getName())) {
1056                        final String action = child.getName();
1057                        final String sessionId = child.getAttribute("id");
1058                        if (sessionId == null) {
1059                            break;
1060                        }
1061                        if (query == null && offlineMessagesRetrieved) {
1062                            if (serverMsgId == null) {
1063                                serverMsgId = extractStanzaId(account, packet);
1064                            }
1065                            mXmppConnectionService
1066                                    .getJingleConnectionManager()
1067                                    .deliverMessage(
1068                                            account,
1069                                            packet.getTo(),
1070                                            packet.getFrom(),
1071                                            child,
1072                                            remoteMsgId,
1073                                            serverMsgId,
1074                                            timestamp);
1075                            final Contact contact = account.getRoster().getContact(from);
1076                            if (mXmppConnectionService.confirmMessages()
1077                                    && !contact.isSelf()
1078                                    && remoteMsgId != null
1079                                    && contact.showInContactList()) {
1080                                processMessageReceipts(account, packet, remoteMsgId, null);
1081                            }
1082                        } else if ((query != null && query.isCatchup()) || !offlineMessagesRetrieved) {
1083                            if ("propose".equals(action)) {
1084                                final Element description = child.findChild("description");
1085                                final String namespace =
1086                                        description == null ? null : description.getNamespace();
1087                                if (Namespace.JINGLE_APPS_RTP.equals(namespace)) {
1088                                    final Conversation c =
1089                                            mXmppConnectionService.findOrCreateConversation(
1090                                                    account, counterpart.asBareJid(), false, false);
1091                                    final Message preExistingMessage =
1092                                            c.findRtpSession(sessionId, status);
1093                                    if (preExistingMessage != null) {
1094                                        preExistingMessage.setServerMsgId(serverMsgId);
1095                                        mXmppConnectionService.updateMessage(preExistingMessage);
1096                                        break;
1097                                    }
1098                                    final Message message =
1099                                            new Message(
1100                                                    c, status, Message.TYPE_RTP_SESSION, sessionId);
1101                                    message.setServerMsgId(serverMsgId);
1102                                    message.setTime(timestamp);
1103                                    message.setBody(new RtpSessionStatus(false, 0).toString());
1104                                    c.add(message);
1105                                    mXmppConnectionService.databaseBackend.createMessage(message);
1106                                }
1107                            } else if ("proceed".equals(action)) {
1108                                // status needs to be flipped to find the original propose
1109                                final Conversation c =
1110                                        mXmppConnectionService.findOrCreateConversation(
1111                                                account, counterpart.asBareJid(), false, false);
1112                                final int s =
1113                                        packet.fromAccount(account)
1114                                                ? Message.STATUS_RECEIVED
1115                                                : Message.STATUS_SEND;
1116                                final Message message = c.findRtpSession(sessionId, s);
1117                                if (message != null) {
1118                                    message.setBody(new RtpSessionStatus(true, 0).toString());
1119                                    if (serverMsgId != null) {
1120                                        message.setServerMsgId(serverMsgId);
1121                                    }
1122                                    message.setTime(timestamp);
1123                                    mXmppConnectionService.updateMessage(message, true);
1124                                } else {
1125                                    Log.d(
1126                                            Config.LOGTAG,
1127                                            "unable to find original rtp session message for received propose");
1128                                }
1129
1130                            } else if ("finish".equals(action)) {
1131                                Log.d(
1132                                        Config.LOGTAG,
1133                                        "received JMI 'finish' during MAM catch-up. Can be used to update success/failure and duration");
1134                            }
1135                        } else {
1136                            //MAM reloads (non catchups
1137                            if ("propose".equals(action)) {
1138                                final Element description = child.findChild("description");
1139                                final String namespace = description == null ? null : description.getNamespace();
1140                                if (Namespace.JINGLE_APPS_RTP.equals(namespace)) {
1141                                    final Conversation c = mXmppConnectionService.findOrCreateConversation(account, counterpart.asBareJid(), false, false);
1142                                    final Message preExistingMessage = c.findRtpSession(sessionId, status);
1143                                    if (preExistingMessage != null) {
1144                                        preExistingMessage.setServerMsgId(serverMsgId);
1145                                        mXmppConnectionService.updateMessage(preExistingMessage);
1146                                        break;
1147                                    }
1148                                    final Message message = new Message(
1149                                            c,
1150                                            status,
1151                                            Message.TYPE_RTP_SESSION,
1152                                            sessionId
1153                                    );
1154                                    message.setServerMsgId(serverMsgId);
1155                                    message.setTime(timestamp);
1156                                    message.setBody(new RtpSessionStatus(true, 0).toString());
1157                                    if (query.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) {
1158                                        c.prepend(query.getActualInThisQuery(), message);
1159                                    } else {
1160                                        c.add(message);
1161                                    }
1162                                    query.incrementActualMessageCount();
1163                                    mXmppConnectionService.databaseBackend.createMessage(message);
1164                                }
1165                            }
1166                        }
1167                        break;
1168                    }
1169                }
1170            }
1171        }
1172
1173        Element received = packet.findChild("received", "urn:xmpp:chat-markers:0");
1174        if (received == null) {
1175            received = packet.findChild("received", "urn:xmpp:receipts");
1176        }
1177        if (received != null) {
1178            String id = received.getAttribute("id");
1179            if (packet.fromAccount(account)) {
1180                if (query != null && id != null && packet.getTo() != null) {
1181                    query.removePendingReceiptRequest(new ReceiptRequest(packet.getTo(), id));
1182                }
1183            } else if (id != null) {
1184                if (id.startsWith(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX)) {
1185                    final String sessionId = id.substring(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX.length());
1186                    mXmppConnectionService.getJingleConnectionManager()
1187                            .updateProposedSessionDiscovered(account, from, sessionId, JingleConnectionManager.DeviceDiscoveryState.DISCOVERED);
1188                } else {
1189                    mXmppConnectionService.markMessage(account, from.asBareJid(), id, Message.STATUS_SEND_RECEIVED);
1190                }
1191            }
1192        }
1193        final Element displayed = packet.findChild("displayed", "urn:xmpp:chat-markers:0");
1194        if (displayed != null) {
1195            final String id = displayed.getAttribute("id");
1196            final Jid sender = InvalidJid.getNullForInvalid(displayed.getAttributeAsJid("sender"));
1197            if (packet.fromAccount(account) && !selfAddressed) {
1198                final Conversation c =
1199                        mXmppConnectionService.find(account, counterpart.asBareJid());
1200                final Message message =
1201                        (c == null || id == null) ? null : c.findReceivedWithRemoteId(id);
1202                if (message != null && (query == null || query.isCatchup())) {
1203                    mXmppConnectionService.markReadUpTo(c, message);
1204                }
1205                if (query == null) {
1206                    activateGracePeriod(account);
1207                }
1208            } else if (isTypeGroupChat) {
1209                final Conversation conversation = mXmppConnectionService.find(account, counterpart.asBareJid());
1210                final Message message;
1211                if (conversation != null && id != null) {
1212                    if (sender != null) {
1213                        message = conversation.findMessageWithRemoteId(id, sender);
1214                    } else {
1215                        message = conversation.findMessageWithServerMsgId(id);
1216                    }
1217                } else {
1218                    message = null;
1219                }
1220                if (message != null) {
1221                    final Jid fallback = conversation.getMucOptions().getTrueCounterpart(counterpart);
1222                    final Jid trueJid = getTrueCounterpart((query != null && query.safeToExtractTrueCounterpart()) ? mucUserElement : null, fallback);
1223                    final boolean trueJidMatchesAccount = account.getJid().asBareJid().equals(trueJid == null ? null : trueJid.asBareJid());
1224                    if (trueJidMatchesAccount || conversation.getMucOptions().isSelf(counterpart)) {
1225                        if (!message.isRead() && (query == null || query.isCatchup())) { //checking if message is unread fixes race conditions with reflections
1226                            mXmppConnectionService.markReadUpTo(conversation, message);
1227                        }
1228                    } else if (!counterpart.isBareJid() && trueJid != null) {
1229                        final ReadByMarker readByMarker = ReadByMarker.from(counterpart, trueJid);
1230                        if (message.addReadByMarker(readByMarker)) {
1231                            final var mucOptions = conversation.getMucOptions();
1232                            final var everyone = ImmutableSet.copyOf(mucOptions.getMembers(false));
1233                            final var readyBy = message.getReadyByTrue();
1234                            final var mStatus = message.getStatus();
1235                            if (mucOptions.isPrivateAndNonAnonymous()
1236                                    && (mStatus == Message.STATUS_SEND_RECEIVED
1237                                            || mStatus == Message.STATUS_SEND)
1238                                    && readyBy.containsAll(everyone)) {
1239                                message.setStatus(Message.STATUS_SEND_DISPLAYED);
1240                            }
1241                            mXmppConnectionService.updateMessage(message, false);
1242                        }
1243                    }
1244                }
1245            } else {
1246                final Message displayedMessage = mXmppConnectionService.markMessage(account, from.asBareJid(), id, Message.STATUS_SEND_DISPLAYED);
1247                Message message = displayedMessage == null ? null : displayedMessage.prev();
1248                while (message != null
1249                        && message.getStatus() == Message.STATUS_SEND_RECEIVED
1250                        && message.getTimeSent() < displayedMessage.getTimeSent()) {
1251                    mXmppConnectionService.markMessage(message, Message.STATUS_SEND_DISPLAYED);
1252                    message = message.prev();
1253                }
1254                if (displayedMessage != null && selfAddressed) {
1255                    dismissNotification(account, counterpart, query, id);
1256                }
1257            }
1258        }
1259
1260        final Element event = original.findChild("event", "http://jabber.org/protocol/pubsub#event");
1261        if (event != null && InvalidJid.hasValidFrom(original) && original.getFrom().isBareJid()) {
1262            if (event.hasChild("items")) {
1263                parseEvent(event, original.getFrom(), account);
1264            } else if (event.hasChild("delete")) {
1265                parseDeleteEvent(event, original.getFrom(), account);
1266            } else if (event.hasChild("purge")) {
1267                parsePurgeEvent(event, original.getFrom(), account);
1268            }
1269        }
1270
1271        final String nick = packet.findChildContent("nick", Namespace.NICK);
1272        if (nick != null && InvalidJid.hasValidFrom(original)) {
1273            if (mXmppConnectionService.isMuc(account, from)) {
1274                return;
1275            }
1276            final Contact contact = account.getRoster().getContact(from);
1277            if (contact.setPresenceName(nick)) {
1278                mXmppConnectionService.syncRoster(account);
1279                mXmppConnectionService.getAvatarService().clear(contact);
1280            }
1281        }
1282    }
1283
1284    private void dismissNotification(Account account, Jid counterpart, MessageArchiveService.Query query, final String id) {
1285        final Conversation conversation = mXmppConnectionService.find(account, counterpart.asBareJid());
1286        if (conversation != null && (query == null || query.isCatchup())) {
1287            final String displayableId = conversation.findMostRecentRemoteDisplayableId();
1288            if (displayableId != null && displayableId.equals(id)) {
1289                mXmppConnectionService.markRead(conversation);
1290            } else {
1291                Log.w(Config.LOGTAG, account.getJid().asBareJid() + ": received dismissing display marker that did not match our last id in that conversation");
1292            }
1293        }
1294    }
1295
1296    private void processMessageReceipts(final Account account, final MessagePacket packet, final String remoteMsgId, MessageArchiveService.Query query) {
1297        final boolean markable = packet.hasChild("markable", "urn:xmpp:chat-markers:0");
1298        final boolean request = packet.hasChild("request", "urn:xmpp:receipts");
1299        if (query == null) {
1300            final ArrayList<String> receiptsNamespaces = new ArrayList<>();
1301            if (markable) {
1302                receiptsNamespaces.add("urn:xmpp:chat-markers:0");
1303            }
1304            if (request) {
1305                receiptsNamespaces.add("urn:xmpp:receipts");
1306            }
1307            if (receiptsNamespaces.size() > 0) {
1308                final MessagePacket receipt = mXmppConnectionService.getMessageGenerator().received(account,
1309                        packet.getFrom(),
1310                        remoteMsgId,
1311                        receiptsNamespaces,
1312                        packet.getType());
1313                mXmppConnectionService.sendMessagePacket(account, receipt);
1314            }
1315        } else if (query.isCatchup()) {
1316            if (request) {
1317                query.addPendingReceiptRequest(new ReceiptRequest(packet.getFrom(), remoteMsgId));
1318            }
1319        }
1320    }
1321
1322    private void activateGracePeriod(Account account) {
1323        long duration = mXmppConnectionService.getLongPreference("grace_period_length", R.integer.grace_period) * 1000;
1324        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": activating grace period till " + TIME_FORMAT.format(new Date(System.currentTimeMillis() + duration)));
1325        account.activateGracePeriod(duration);
1326    }
1327
1328    private class Invite {
1329        final Jid jid;
1330        final String password;
1331        final boolean direct;
1332        final Jid inviter;
1333
1334        Invite(Jid jid, String password, boolean direct, Jid inviter) {
1335            this.jid = jid;
1336            this.password = password;
1337            this.direct = direct;
1338            this.inviter = inviter;
1339        }
1340
1341        public boolean execute(final Account account) {
1342            if (this.jid == null) {
1343                return false;
1344            }
1345            final Contact contact = this.inviter != null ? account.getRoster().getContact(this.inviter) : null;
1346            if (contact != null && contact.isBlocked()) {
1347                Log.d(Config.LOGTAG,account.getJid().asBareJid()+": ignore invite from "+contact.getJid()+" because contact is blocked");
1348                return false;
1349            }
1350            final Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, jid, true, false);
1351            conversation.setAttribute("inviter", inviter.toEscapedString());
1352            if (conversation.getMucOptions().online()) {
1353                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received invite to " + jid + " but muc is considered to be online");
1354                mXmppConnectionService.mucSelfPingAndRejoin(conversation);
1355            } else {
1356                conversation.getMucOptions().setPassword(password);
1357                mXmppConnectionService.databaseBackend.updateConversation(conversation);
1358                mXmppConnectionService.joinMuc(conversation, contact != null && contact.showInContactList());
1359                mXmppConnectionService.updateConversationUi();
1360            }
1361            return true;
1362        }
1363    }
1364}