1package eu.siacs.conversations.entities;
   2
   3import android.content.ContentValues;
   4import android.database.Cursor;
   5import android.graphics.drawable.Drawable;
   6import android.graphics.Color;
   7import android.os.Build;
   8import android.text.Html;
   9import android.text.SpannableStringBuilder;
  10import android.text.Spanned;
  11import android.text.style.ImageSpan;
  12import android.text.style.ClickableSpan;
  13import android.util.Base64;
  14import android.util.Log;
  15import android.util.Pair;
  16import android.view.View;
  17
  18import com.cheogram.android.BobTransfer;
  19import com.cheogram.android.GetThumbnailForCid;
  20import com.cheogram.android.InlineImageSpan;
  21import com.cheogram.android.SpannedToXHTML;
  22
  23import com.google.common.io.ByteSource;
  24import com.google.common.base.Strings;
  25import com.google.common.collect.Collections2;
  26import com.google.common.collect.ImmutableSet;
  27import com.google.common.primitives.Longs;
  28
  29import org.json.JSONException;
  30
  31import java.lang.ref.WeakReference;
  32import java.io.IOException;
  33import java.net.URI;
  34import java.net.URISyntaxException;
  35import java.time.Duration;
  36import java.security.NoSuchAlgorithmException;
  37import java.util.ArrayList;
  38import java.util.Arrays;
  39import java.util.HashSet;
  40import java.util.Iterator;
  41import java.util.List;
  42import java.util.Set;
  43import java.util.stream.Collectors;
  44import java.util.concurrent.CopyOnWriteArraySet;
  45
  46import io.ipfs.cid.Cid;
  47
  48import eu.siacs.conversations.Config;
  49import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  50import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  51import eu.siacs.conversations.http.URL;
  52import eu.siacs.conversations.services.AvatarService;
  53import eu.siacs.conversations.ui.util.MyLinkify;
  54import eu.siacs.conversations.ui.util.PresenceSelector;
  55import eu.siacs.conversations.ui.util.QuoteHelper;
  56import eu.siacs.conversations.utils.CryptoHelper;
  57import eu.siacs.conversations.utils.Emoticons;
  58import eu.siacs.conversations.utils.GeoHelper;
  59import eu.siacs.conversations.utils.MessageUtils;
  60import eu.siacs.conversations.utils.MimeUtils;
  61import eu.siacs.conversations.utils.StringUtils;
  62import eu.siacs.conversations.utils.UIHelper;
  63import eu.siacs.conversations.services.XmppConnectionService;
  64import eu.siacs.conversations.xmpp.Jid;
  65import eu.siacs.conversations.xml.Element;
  66import eu.siacs.conversations.xml.Namespace;
  67import eu.siacs.conversations.xml.Tag;
  68import eu.siacs.conversations.xml.XmlReader;
  69
  70public class Message extends AbstractEntity implements AvatarService.Avatarable {
  71
  72    public static final String TABLENAME = "messages";
  73
  74    public static final int STATUS_DUMMY = -1;
  75    public static final int STATUS_RECEIVED = 0;
  76    public static final int STATUS_UNSEND = 1;
  77    public static final int STATUS_SEND = 2;
  78    public static final int STATUS_SEND_FAILED = 3;
  79    public static final int STATUS_WAITING = 5;
  80    public static final int STATUS_OFFERED = 6;
  81    public static final int STATUS_SEND_RECEIVED = 7;
  82    public static final int STATUS_SEND_DISPLAYED = 8;
  83
  84    public static final int ENCRYPTION_NONE = 0;
  85    public static final int ENCRYPTION_PGP = 1;
  86    public static final int ENCRYPTION_OTR = 2;
  87    public static final int ENCRYPTION_DECRYPTED = 3;
  88    public static final int ENCRYPTION_DECRYPTION_FAILED = 4;
  89    public static final int ENCRYPTION_AXOLOTL = 5;
  90    public static final int ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE = 6;
  91    public static final int ENCRYPTION_AXOLOTL_FAILED = 7;
  92
  93    public static final int TYPE_TEXT = 0;
  94    public static final int TYPE_IMAGE = 1;
  95    public static final int TYPE_FILE = 2;
  96    public static final int TYPE_STATUS = 3;
  97    public static final int TYPE_PRIVATE = 4;
  98    public static final int TYPE_PRIVATE_FILE = 5;
  99    public static final int TYPE_RTP_SESSION = 6;
 100
 101    public static final String CONVERSATION = "conversationUuid";
 102    public static final String COUNTERPART = "counterpart";
 103    public static final String TRUE_COUNTERPART = "trueCounterpart";
 104    public static final String BODY = "body";
 105    public static final String BODY_LANGUAGE = "bodyLanguage";
 106    public static final String TIME_SENT = "timeSent";
 107    public static final String ENCRYPTION = "encryption";
 108    public static final String STATUS = "status";
 109    public static final String TYPE = "type";
 110    public static final String CARBON = "carbon";
 111    public static final String OOB = "oob";
 112    public static final String EDITED = "edited";
 113    public static final String REMOTE_MSG_ID = "remoteMsgId";
 114    public static final String SERVER_MSG_ID = "serverMsgId";
 115    public static final String RELATIVE_FILE_PATH = "relativeFilePath";
 116    public static final String FINGERPRINT = "axolotl_fingerprint";
 117    public static final String READ = "read";
 118    public static final String ERROR_MESSAGE = "errorMsg";
 119    public static final String READ_BY_MARKERS = "readByMarkers";
 120    public static final String MARKABLE = "markable";
 121    public static final String DELETED = "deleted";
 122    public static final String ME_COMMAND = "/me ";
 123
 124    public static final String ERROR_MESSAGE_CANCELLED = "eu.siacs.conversations.cancelled";
 125
 126    public static final Object PLAIN_TEXT_SPAN = new PlainTextSpan();
 127
 128    public boolean markable = false;
 129    protected String conversationUuid;
 130    protected Jid counterpart;
 131    protected Jid trueCounterpart;
 132    protected String occupantId = null;
 133    protected String body;
 134    protected String subject;
 135    protected String encryptedBody;
 136    protected long timeSent;
 137    protected long timeReceived;
 138    protected int encryption;
 139    protected int status;
 140    protected int type;
 141    protected boolean deleted = false;
 142    protected boolean carbon = false;
 143    private boolean oob = false;
 144    protected List<Element> payloads = new ArrayList<>();
 145    protected List<Edit> edits = new ArrayList<>();
 146    protected String relativeFilePath;
 147    protected boolean read = true;
 148    protected String remoteMsgId = null;
 149    private String bodyLanguage = null;
 150    protected String serverMsgId = null;
 151    private final Conversational conversation;
 152    protected Transferable transferable = null;
 153    private Message mNextMessage = null;
 154    private Message mPreviousMessage = null;
 155    private String axolotlFingerprint = null;
 156    private String errorMessage = null;
 157    private Set<ReadByMarker> readByMarkers = new CopyOnWriteArraySet<>();
 158    protected Message mInReplyTo = null;
 159
 160    private Boolean isGeoUri = null;
 161    private Boolean isEmojisOnly = null;
 162    private Boolean treatAsDownloadable = null;
 163    private FileParams fileParams = null;
 164    private List<MucOptions.User> counterparts;
 165    private WeakReference<MucOptions.User> user;
 166
 167    protected Message(Conversational conversation) {
 168        this.conversation = conversation;
 169    }
 170
 171    public Message(Conversational conversation, String body, int encryption) {
 172        this(conversation, body, encryption, STATUS_UNSEND);
 173    }
 174
 175    public Message(Conversational conversation, String body, int encryption, int status) {
 176        this(conversation, java.util.UUID.randomUUID().toString(),
 177                conversation.getUuid(),
 178                conversation.getJid() == null ? null : conversation.getJid().asBareJid(),
 179                null,
 180                body,
 181                System.currentTimeMillis(),
 182                encryption,
 183                status,
 184                TYPE_TEXT,
 185                false,
 186                null,
 187                null,
 188                null,
 189                null,
 190                true,
 191                null,
 192                false,
 193                null,
 194                null,
 195                false,
 196                false,
 197                null,
 198                System.currentTimeMillis(),
 199                null,
 200                null,
 201                null);
 202    }
 203
 204    public Message(Conversation conversation, int status, int type, final String remoteMsgId) {
 205        this(conversation, java.util.UUID.randomUUID().toString(),
 206                conversation.getUuid(),
 207                conversation.getJid() == null ? null : conversation.getJid().asBareJid(),
 208                null,
 209                null,
 210                System.currentTimeMillis(),
 211                Message.ENCRYPTION_NONE,
 212                status,
 213                type,
 214                false,
 215                remoteMsgId,
 216                null,
 217                null,
 218                null,
 219                true,
 220                null,
 221                false,
 222                null,
 223                null,
 224                false,
 225                false,
 226                null,
 227                System.currentTimeMillis(),
 228                null,
 229                null,
 230                null);
 231    }
 232
 233    protected Message(final Conversational conversation, final String uuid, final String conversationUUid, final Jid counterpart,
 234                      final Jid trueCounterpart, final String body, final long timeSent,
 235                      final int encryption, final int status, final int type, final boolean carbon,
 236                      final String remoteMsgId, final String relativeFilePath,
 237                      final String serverMsgId, final String fingerprint, final boolean read,
 238                      final String edited, final boolean oob, final String errorMessage, final Set<ReadByMarker> readByMarkers,
 239                      final boolean markable, final boolean deleted, final String bodyLanguage, final long timeReceived, final String subject, final String fileParams, final List<Element> payloads) {
 240        this.conversation = conversation;
 241        this.uuid = uuid;
 242        this.conversationUuid = conversationUUid;
 243        this.counterpart = counterpart;
 244        this.trueCounterpart = trueCounterpart;
 245        this.body = body == null ? "" : body;
 246        this.timeSent = timeSent;
 247        this.encryption = encryption;
 248        this.status = status;
 249        this.type = type;
 250        this.carbon = carbon;
 251        this.remoteMsgId = remoteMsgId;
 252        this.relativeFilePath = relativeFilePath;
 253        this.serverMsgId = serverMsgId;
 254        this.axolotlFingerprint = fingerprint;
 255        this.read = read;
 256        this.edits = Edit.fromJson(edited);
 257        this.oob = oob;
 258        this.errorMessage = errorMessage;
 259        this.readByMarkers = readByMarkers == null ? new CopyOnWriteArraySet<>() : readByMarkers;
 260        this.markable = markable;
 261        this.deleted = deleted;
 262        this.bodyLanguage = bodyLanguage;
 263        this.timeReceived = timeReceived;
 264        this.subject = subject;
 265        if (payloads != null) this.payloads = payloads;
 266        if (fileParams != null && getSims().isEmpty()) this.fileParams = new FileParams(fileParams);
 267    }
 268
 269    public static Message fromCursor(Cursor cursor, Conversation conversation) throws IOException {
 270        String payloadsStr = cursor.getString(cursor.getColumnIndex("payloads"));
 271        List<Element> payloads = new ArrayList<>();
 272        if (payloadsStr != null) {
 273            final XmlReader xmlReader = new XmlReader();
 274            xmlReader.setInputStream(ByteSource.wrap(payloadsStr.getBytes()).openStream());
 275            Tag tag;
 276            try {
 277                while ((tag = xmlReader.readTag()) != null) {
 278                    payloads.add(xmlReader.readElement(tag));
 279                }
 280            } catch (IOException e) {
 281                Log.e(Config.LOGTAG, "Failed to parse: " + payloadsStr, e);
 282            }
 283        }
 284
 285        Message m = new Message(conversation,
 286                cursor.getString(cursor.getColumnIndex(UUID)),
 287                cursor.getString(cursor.getColumnIndex(CONVERSATION)),
 288                fromString(cursor.getString(cursor.getColumnIndex(COUNTERPART))),
 289                fromString(cursor.getString(cursor.getColumnIndex(TRUE_COUNTERPART))),
 290                cursor.getString(cursor.getColumnIndex(BODY)),
 291                cursor.getLong(cursor.getColumnIndex(TIME_SENT)),
 292                cursor.getInt(cursor.getColumnIndex(ENCRYPTION)),
 293                cursor.getInt(cursor.getColumnIndex(STATUS)),
 294                cursor.getInt(cursor.getColumnIndex(TYPE)),
 295                cursor.getInt(cursor.getColumnIndex(CARBON)) > 0,
 296                cursor.getString(cursor.getColumnIndex(REMOTE_MSG_ID)),
 297                cursor.getString(cursor.getColumnIndex(RELATIVE_FILE_PATH)),
 298                cursor.getString(cursor.getColumnIndex(SERVER_MSG_ID)),
 299                cursor.getString(cursor.getColumnIndex(FINGERPRINT)),
 300                cursor.getInt(cursor.getColumnIndex(READ)) > 0,
 301                cursor.getString(cursor.getColumnIndex(EDITED)),
 302                cursor.getInt(cursor.getColumnIndex(OOB)) > 0,
 303                cursor.getString(cursor.getColumnIndex(ERROR_MESSAGE)),
 304                ReadByMarker.fromJsonString(cursor.getString(cursor.getColumnIndex(READ_BY_MARKERS))),
 305                cursor.getInt(cursor.getColumnIndex(MARKABLE)) > 0,
 306                cursor.getInt(cursor.getColumnIndex(DELETED)) > 0,
 307                cursor.getString(cursor.getColumnIndex(BODY_LANGUAGE)),
 308                cursor.getLong(cursor.getColumnIndex(cursor.isNull(cursor.getColumnIndex("timeReceived")) ? TIME_SENT : "timeReceived")),
 309                cursor.getString(cursor.getColumnIndex("subject")),
 310                cursor.getString(cursor.getColumnIndex("fileParams")),
 311                payloads
 312        );
 313        m.setOccupantId(cursor.getString(cursor.getColumnIndex("occupant_id")));
 314        return m;
 315    }
 316
 317    private static Jid fromString(String value) {
 318        try {
 319            if (value != null) {
 320                return Jid.of(value);
 321            }
 322        } catch (IllegalArgumentException e) {
 323            return null;
 324        }
 325        return null;
 326    }
 327
 328    public static Message createStatusMessage(Conversation conversation, String body) {
 329        final Message message = new Message(conversation);
 330        message.setType(Message.TYPE_STATUS);
 331        message.setStatus(Message.STATUS_RECEIVED);
 332        message.body = body;
 333        return message;
 334    }
 335
 336    public static Message createLoadMoreMessage(Conversation conversation) {
 337        final Message message = new Message(conversation);
 338        message.setType(Message.TYPE_STATUS);
 339        message.body = "LOAD_MORE";
 340        return message;
 341    }
 342
 343    public ContentValues getCheogramContentValues() {
 344        final FileParams fp = fileParams;
 345        ContentValues values = new ContentValues();
 346        values.put(UUID, uuid);
 347        values.put("subject", subject);
 348        values.put("fileParams", fp == null ? null : fp.toString());
 349        if (fp != null && !fp.isEmpty()) {
 350            List<Element> sims = getSims();
 351            if (sims.isEmpty()) {
 352                addPayload(fp.toSims());
 353            } else {
 354                sims.get(0).replaceChildren(fp.toSims().getChildren());
 355            }
 356        }
 357        values.put("payloads", payloads.size() < 1 ? null : payloads.stream().map(Object::toString).collect(Collectors.joining()));
 358        values.put("occupant_id", occupantId);
 359        return values;
 360    }
 361
 362    @Override
 363    public ContentValues getContentValues() {
 364        ContentValues values = new ContentValues();
 365        values.put(UUID, uuid);
 366        values.put(CONVERSATION, conversationUuid);
 367        if (counterpart == null) {
 368            values.putNull(COUNTERPART);
 369        } else {
 370            values.put(COUNTERPART, counterpart.toString());
 371        }
 372        if (trueCounterpart == null) {
 373            values.putNull(TRUE_COUNTERPART);
 374        } else {
 375            values.put(TRUE_COUNTERPART, trueCounterpart.toString());
 376        }
 377        values.put(BODY, body.length() > Config.MAX_STORAGE_MESSAGE_CHARS ? body.substring(0, Config.MAX_STORAGE_MESSAGE_CHARS) : body);
 378        values.put(TIME_SENT, timeSent);
 379        values.put(ENCRYPTION, encryption);
 380        values.put(STATUS, status);
 381        values.put(TYPE, type);
 382        values.put(CARBON, carbon ? 1 : 0);
 383        values.put(REMOTE_MSG_ID, remoteMsgId);
 384        values.put(RELATIVE_FILE_PATH, relativeFilePath);
 385        values.put(SERVER_MSG_ID, serverMsgId);
 386        values.put(FINGERPRINT, axolotlFingerprint);
 387        values.put(READ, read ? 1 : 0);
 388        try {
 389            values.put(EDITED, Edit.toJson(edits));
 390        } catch (JSONException e) {
 391            Log.e(Config.LOGTAG, "error persisting json for edits", e);
 392        }
 393        values.put(OOB, oob ? 1 : 0);
 394        values.put(ERROR_MESSAGE, errorMessage);
 395        values.put(READ_BY_MARKERS, ReadByMarker.toJson(readByMarkers).toString());
 396        values.put(MARKABLE, markable ? 1 : 0);
 397        values.put(DELETED, deleted ? 1 : 0);
 398        values.put(BODY_LANGUAGE, bodyLanguage);
 399        return values;
 400    }
 401
 402    public String replyId() {
 403        if (conversation.getMode() == Conversation.MODE_MULTI) return getServerMsgId();
 404        final String remote = getRemoteMsgId();
 405        if (remote == null && getStatus() > STATUS_RECEIVED) return getUuid();
 406        return remote;
 407    }
 408
 409    public Message reply() {
 410        Message m = new Message(conversation, "", ENCRYPTION_NONE);
 411        m.setThread(getThread());
 412
 413        m.updateReplyTo(this, null);
 414        return m;
 415    }
 416
 417    public void clearReplyReact() {
 418        this.payloads.remove(getReactions());
 419        this.payloads.remove(getReply());
 420        clearFallbacks("urn:xmpp:reply:0", "urn:xmpp:reactions:0");
 421    }
 422
 423    public void updateReplyTo(final Message replyTo, Spanned body) {
 424        clearReplyReact();
 425
 426        if (body == null) body = new SpannableStringBuilder(getBody(true));
 427        setBody(QuoteHelper.quote(MessageUtils.prepareQuote(replyTo)) + "\n");
 428
 429        final String replyId = replyTo.replyId();
 430        if (replyId == null) return;
 431
 432        addPayload(
 433            new Element("reply", "urn:xmpp:reply:0")
 434                .setAttribute("to", replyTo.getCounterpart())
 435                .setAttribute("id", replyId)
 436        );
 437        final Element fallback = new Element("fallback", "urn:xmpp:fallback:0").setAttribute("for", "urn:xmpp:reply:0");
 438        fallback.addChild("body", "urn:xmpp:fallback:0")
 439                .setAttribute("start", "0")
 440                .setAttribute("end", "" + this.body.codePointCount(0, this.body.length()));
 441        addPayload(fallback);
 442
 443        appendBody(body);
 444        setInReplyTo(replyTo);
 445    }
 446
 447    public Message react(String emoji) {
 448        final var m = reply();
 449        if (getReactions() == null) {
 450            m.updateReaction(this, emoji);
 451        } else if (mInReplyTo != null) {
 452            // Try to send react-to-reaction to parent
 453            m.updateReaction(mInReplyTo, emoji);
 454        } else {
 455            // Do not send react-to-reaction
 456            m.updateReplyTo(this, new SpannableStringBuilder(emoji));
 457        }
 458        return m;
 459    }
 460
 461    public void updateReaction(final Message reactTo, String emoji) {
 462         Set<String> emojis = new HashSet<>();
 463        if (conversation instanceof Conversation) emojis = ((Conversation) conversation).findReactionsTo(reactTo.replyId(), null);
 464        emojis.remove(getBody(true));
 465        emojis.add(emoji);
 466
 467        updateReplyTo(reactTo, new SpannableStringBuilder(emoji));
 468        final Element fallback = new Element("fallback", "urn:xmpp:fallback:0").setAttribute("for", "urn:xmpp:reactions:0");
 469        fallback.addChild("body", "urn:xmpp:fallback:0");
 470        addPayload(fallback);
 471        final Element reactions = new Element("reactions", "urn:xmpp:reactions:0").setAttribute("id", reactTo.replyId());
 472        for (String oneEmoji : emojis) {
 473            reactions.addChild("reaction", "urn:xmpp:reactions:0").setContent(oneEmoji);
 474        }
 475        addPayload(reactions);
 476    }
 477
 478    public void setReactions(Element reactions) {
 479        if (this.payloads != null) {
 480            this.payloads.remove(getReactions());
 481        }
 482        addPayload(reactions);
 483    }
 484
 485    public Element getReactions() {
 486        if (this.payloads == null) return null;
 487
 488        for (Element el : this.payloads) {
 489            if (el.getName().equals("reactions") && el.getNamespace().equals("urn:xmpp:reactions:0")) {
 490                return el;
 491            }
 492        }
 493
 494        return null;
 495    }
 496
 497    public Element getReply() {
 498        if (this.payloads == null) return null;
 499
 500        for (Element el : this.payloads) {
 501            if (el.getName().equals("reply") && el.getNamespace().equals("urn:xmpp:reply:0")) {
 502                return el;
 503            }
 504        }
 505
 506        return null;
 507    }
 508
 509    public boolean isAttention() {
 510        if (this.payloads == null) return false;
 511
 512        for (Element el : this.payloads) {
 513            if (el.getName().equals("attention") && el.getNamespace().equals("urn:xmpp:attention:0")) {
 514                return true;
 515            }
 516        }
 517
 518        return false;
 519    }
 520
 521    public String getConversationUuid() {
 522        return conversationUuid;
 523    }
 524
 525    public Conversational getConversation() {
 526        return this.conversation;
 527    }
 528
 529    public Jid getCounterpart() {
 530        return counterpart;
 531    }
 532
 533    public void setCounterpart(final Jid counterpart) {
 534        this.counterpart = counterpart;
 535    }
 536
 537    public Contact getContact() {
 538        if (this.conversation.getMode() == Conversation.MODE_SINGLE) {
 539            if (this.trueCounterpart != null) {
 540                return this.conversation.getAccount().getRoster()
 541                           .getContact(this.trueCounterpart);
 542            }
 543
 544            return this.conversation.getContact();
 545        } else {
 546            if (this.trueCounterpart == null) {
 547                return null;
 548            } else {
 549                return this.conversation.getAccount().getRoster()
 550                        .getContactFromContactList(this.trueCounterpart);
 551            }
 552        }
 553    }
 554
 555    public String getQuoteableBody() {
 556        if (this.body == null) return null;
 557
 558        StringBuilder body = bodyMinusFallbacks("http://jabber.org/protocol/address").first;
 559        return body.toString();
 560    }
 561
 562    public String getRawBody() {
 563        return this.body;
 564    }
 565
 566    private Pair<StringBuilder, Boolean> bodyMinusFallbacks(String... fallbackNames) {
 567        StringBuilder body = new StringBuilder(this.body == null ? "" : this.body);
 568
 569        List<Element> fallbacks = getFallbacks(fallbackNames);
 570        List<Pair<Integer, Integer>> spans = new ArrayList<>();
 571        for (Element fallback : fallbacks) {
 572            for (Element span : fallback.getChildren()) {
 573                if (!span.getName().equals("body") && !span.getNamespace().equals("urn:xmpp:fallback:0")) continue;
 574                if (span.getAttribute("start") == null || span.getAttribute("end") == null) return new Pair<>(new StringBuilder(""), true);
 575                spans.add(new Pair(parseInt(span.getAttribute("start")), parseInt(span.getAttribute("end"))));
 576            }
 577        }
 578        // Do them in reverse order so that span deletions don't affect the indexes of other spans
 579        spans.sort((x, y) -> y.first.compareTo(x.first));
 580        try {
 581            for (Pair<Integer, Integer> span : spans) {
 582                body.delete(body.offsetByCodePoints(0, span.first.intValue()), body.offsetByCodePoints(0, span.second.intValue()));
 583            }
 584        } catch (final IndexOutOfBoundsException e) { spans.clear(); }
 585
 586        return new Pair<>(body, !spans.isEmpty());
 587    }
 588
 589    public String getBody() {
 590        return getBody(false);
 591    }
 592
 593    public String getBody(final boolean removeQuoteFallbacks) {
 594        if (body == null) return "";
 595
 596        Pair<StringBuilder, Boolean> result =
 597            removeQuoteFallbacks
 598            ? bodyMinusFallbacks("http://jabber.org/protocol/address", Namespace.OOB, "urn:xmpp:reply:0")
 599            : bodyMinusFallbacks("http://jabber.org/protocol/address", Namespace.OOB);
 600        StringBuilder body = result.first;
 601
 602        final String aesgcm = MessageUtils.aesgcmDownloadable(body.toString());
 603        if (!result.second && aesgcm != null) {
 604            return body.toString().replace(aesgcm, "");
 605        } else if (!result.second && getOob() != null) {
 606            return body.toString().replace(getOob().toString(), "");
 607        } else if (!result.second && isGeoUri()) {
 608            return "";
 609        } else {
 610            return body.toString();
 611        }
 612    }
 613
 614    public synchronized void clearFallbacks(String... includeFor) {
 615        this.payloads.removeAll(getFallbacks(includeFor));
 616    }
 617
 618    public synchronized Element getOrMakeHtml() {
 619        Element html = getHtml();
 620        if (html != null) return html;
 621        html = new Element("html", "http://jabber.org/protocol/xhtml-im");
 622        Element body = html.addChild("body", "http://www.w3.org/1999/xhtml");
 623        SpannedToXHTML.append(body, new SpannableStringBuilder(getBody(true)));
 624        addPayload(html);
 625        return body;
 626    }
 627
 628    public synchronized void setBody(Spanned span) {
 629        // Don't bother removing, we'll edit below
 630        setBodyPreserveXHTML(span == null ? null : span.toString());
 631        if (span == null || SpannedToXHTML.isPlainText(span)) {
 632            this.payloads.remove(getHtml(true));
 633        } else {
 634            final Element body = getOrMakeHtml();
 635            body.clearChildren();
 636            SpannedToXHTML.append(body, span);
 637        }
 638    }
 639
 640    public synchronized void setHtml(Element html) {
 641        final Element oldHtml = getHtml(true);
 642        if (oldHtml != null) this.payloads.remove(oldHtml);
 643        if (html != null) addPayload(html);
 644    }
 645
 646    private synchronized void setBodyPreserveXHTML(String body) {
 647        this.body = body;
 648        this.isGeoUri = null;
 649        this.isEmojisOnly = null;
 650        this.treatAsDownloadable = null;
 651    }
 652
 653    public synchronized void setBody(String body) {
 654        setBodyPreserveXHTML(body);
 655        this.payloads.remove(getHtml(true));
 656    }
 657
 658    public synchronized void appendBody(Spanned append) {
 659        if (!SpannedToXHTML.isPlainText(append) || getHtml() != null) {
 660            final Element body = getOrMakeHtml();
 661            SpannedToXHTML.append(body, append);
 662        }
 663        appendBody(append.toString());
 664    }
 665
 666    public synchronized void appendBody(String append) {
 667        this.body += append;
 668        this.isGeoUri = null;
 669        this.isEmojisOnly = null;
 670        this.treatAsDownloadable = null;
 671    }
 672
 673    public String getSubject() {
 674        return subject;
 675    }
 676
 677    public synchronized void setSubject(String subject) {
 678        this.subject = subject;
 679    }
 680
 681    public Element getThread() {
 682        if (this.payloads == null) return null;
 683
 684        for (Element el : this.payloads) {
 685            if (el.getName().equals("thread") && el.getNamespace().equals("jabber:client")) {
 686                return el;
 687            }
 688        }
 689
 690        return null;
 691    }
 692
 693    public void setThread(Element thread) {
 694        payloads.removeIf(el -> el.getName().equals("thread") && el.getNamespace().equals("jabber:client"));
 695        addPayload(thread);
 696    }
 697
 698    public void setOccupantId(final String id) {
 699        occupantId = id;
 700    }
 701
 702    public String getOccupantId() {
 703        return occupantId;
 704    }
 705
 706    public void setMucUser(MucOptions.User user) {
 707        this.user = new WeakReference<>(user);
 708        if (user != null && user.getOccupantId() != null) setOccupantId(user.getOccupantId());
 709    }
 710
 711    public boolean sameMucUser(Message otherMessage) {
 712        final MucOptions.User thisUser = this.user == null ? null : this.user.get();
 713        final MucOptions.User otherUser = otherMessage.user == null ? null : otherMessage.user.get();
 714        return
 715            (thisUser != null && thisUser == otherUser) ||
 716            (getOccupantId() != null && getOccupantId().equals(otherMessage.getOccupantId()));
 717    }
 718
 719    public String getErrorMessage() {
 720        return errorMessage;
 721    }
 722
 723    public boolean setErrorMessage(String message) {
 724        boolean changed = (message != null && !message.equals(errorMessage))
 725                || (message == null && errorMessage != null);
 726        this.errorMessage = message;
 727        return changed;
 728    }
 729
 730    public long getTimeReceived() {
 731        return timeReceived;
 732    }
 733
 734    public long getTimeSent() {
 735        return timeSent;
 736    }
 737
 738    public int getEncryption() {
 739        return encryption;
 740    }
 741
 742    public void setEncryption(int encryption) {
 743        this.encryption = encryption;
 744    }
 745
 746    public int getStatus() {
 747        return status;
 748    }
 749
 750    public void setStatus(int status) {
 751        this.status = status;
 752    }
 753
 754    public String getRelativeFilePath() {
 755        return this.relativeFilePath;
 756    }
 757
 758    public void setRelativeFilePath(String path) {
 759        this.relativeFilePath = path;
 760    }
 761
 762    public String getRemoteMsgId() {
 763        return this.remoteMsgId;
 764    }
 765
 766    public void setRemoteMsgId(String id) {
 767        this.remoteMsgId = id;
 768    }
 769
 770    public String getServerMsgId() {
 771        return this.serverMsgId;
 772    }
 773
 774    public void setServerMsgId(String id) {
 775        this.serverMsgId = id;
 776    }
 777
 778    public boolean isRead() {
 779        return this.read;
 780    }
 781
 782    public boolean isDeleted() {
 783        return this.deleted;
 784    }
 785
 786    public Element getModerated() {
 787        if (this.payloads == null) return null;
 788
 789        for (Element el : this.payloads) {
 790            if (el.getName().equals("moderated") && el.getNamespace().equals("urn:xmpp:message-moderate:0")) {
 791                return el;
 792            }
 793        }
 794
 795        return null;
 796    }
 797
 798    public void setDeleted(boolean deleted) {
 799        this.deleted = deleted;
 800    }
 801
 802    public void markRead() {
 803        this.read = true;
 804    }
 805
 806    public void markUnread() {
 807        this.read = false;
 808    }
 809
 810    public void setTime(long time) {
 811        this.timeSent = time;
 812    }
 813
 814    public void setTimeReceived(long time) {
 815        this.timeReceived = time;
 816    }
 817
 818    public String getEncryptedBody() {
 819        return this.encryptedBody;
 820    }
 821
 822    public void setEncryptedBody(String body) {
 823        this.encryptedBody = body;
 824    }
 825
 826    public int getType() {
 827        return this.type;
 828    }
 829
 830    public void setType(int type) {
 831        this.type = type;
 832    }
 833
 834    public boolean isCarbon() {
 835        return carbon;
 836    }
 837
 838    public void setCarbon(boolean carbon) {
 839        this.carbon = carbon;
 840    }
 841
 842    public void putEdited(String edited, String serverMsgId) {
 843        final Edit edit = new Edit(edited, serverMsgId);
 844        if (this.edits.size() < 128 && !this.edits.contains(edit)) {
 845            this.edits.add(edit);
 846        }
 847    }
 848
 849    boolean remoteMsgIdMatchInEdit(String id) {
 850        for (Edit edit : this.edits) {
 851            if (id.equals(edit.getEditedId())) {
 852                return true;
 853            }
 854        }
 855        return false;
 856    }
 857
 858    public String getBodyLanguage() {
 859        return this.bodyLanguage;
 860    }
 861
 862    public void setBodyLanguage(String language) {
 863        this.bodyLanguage = language;
 864    }
 865
 866    public boolean edited() {
 867        return this.edits.size() > 0;
 868    }
 869
 870    public void setTrueCounterpart(Jid trueCounterpart) {
 871        this.trueCounterpart = trueCounterpart;
 872    }
 873
 874    public Jid getTrueCounterpart() {
 875        return this.trueCounterpart;
 876    }
 877
 878    public Transferable getTransferable() {
 879        return this.transferable;
 880    }
 881
 882    public synchronized void setTransferable(Transferable transferable) {
 883        this.transferable = transferable;
 884    }
 885
 886    public boolean addReadByMarker(final ReadByMarker readByMarker) {
 887        if (readByMarker.getRealJid() != null) {
 888            if (readByMarker.getRealJid().asBareJid().equals(trueCounterpart)) {
 889                return false;
 890            }
 891        } else if (readByMarker.getFullJid() != null) {
 892            if (readByMarker.getFullJid().equals(counterpart)) {
 893                return false;
 894            }
 895        }
 896        if (this.readByMarkers.add(readByMarker)) {
 897            if (readByMarker.getRealJid() != null && readByMarker.getFullJid() != null) {
 898                Iterator<ReadByMarker> iterator = this.readByMarkers.iterator();
 899                while (iterator.hasNext()) {
 900                    ReadByMarker marker = iterator.next();
 901                    if (marker.getRealJid() == null && readByMarker.getFullJid().equals(marker.getFullJid())) {
 902                        iterator.remove();
 903                    }
 904                }
 905            }
 906            return true;
 907        } else {
 908            return false;
 909        }
 910    }
 911
 912    public Set<ReadByMarker> getReadByMarkers() {
 913        return ImmutableSet.copyOf(this.readByMarkers);
 914    }
 915
 916    public Set<Jid> getReadyByTrue() {
 917        return ImmutableSet.copyOf(
 918                Collections2.transform(
 919                        Collections2.filter(this.readByMarkers, m -> m.getRealJid() != null),
 920                        ReadByMarker::getRealJid));
 921    }
 922
 923    public void setInReplyTo(final Message m) {
 924        mInReplyTo = m;
 925    }
 926
 927    public Message getInReplyTo() {
 928        return mInReplyTo;
 929    }
 930
 931    boolean similar(Message message) {
 932        if (!isPrivateMessage() && this.serverMsgId != null && message.getServerMsgId() != null) {
 933            return this.serverMsgId.equals(message.getServerMsgId()) || Edit.wasPreviouslyEditedServerMsgId(edits, message.getServerMsgId());
 934        } else if (Edit.wasPreviouslyEditedServerMsgId(edits, message.getServerMsgId())) {
 935            return true;
 936        } else if (this.body == null || this.counterpart == null) {
 937            return false;
 938        } else {
 939            String body, otherBody;
 940            if (this.hasFileOnRemoteHost() && (this.body == null || "".equals(this.body))) {
 941                body = getFileParams().url;
 942                otherBody = message.body == null ? null : message.body.trim();
 943            } else {
 944                body = this.body;
 945                otherBody = message.body;
 946            }
 947            final boolean matchingCounterpart = this.counterpart.equals(message.getCounterpart());
 948            if (message.getRemoteMsgId() != null) {
 949                final boolean hasUuid = CryptoHelper.UUID_PATTERN.matcher(message.getRemoteMsgId()).matches();
 950                if (hasUuid && matchingCounterpart && Edit.wasPreviouslyEditedRemoteMsgId(edits, message.getRemoteMsgId())) {
 951                    return true;
 952                }
 953                return (message.getRemoteMsgId().equals(this.remoteMsgId) || message.getRemoteMsgId().equals(this.uuid))
 954                        && matchingCounterpart
 955                        && (body.equals(otherBody) || (message.getEncryption() == Message.ENCRYPTION_PGP && hasUuid));
 956            } else {
 957                return this.remoteMsgId == null
 958                        && matchingCounterpart
 959                        && body.equals(otherBody)
 960                        && Math.abs(this.getTimeSent() - message.getTimeSent()) < Config.MESSAGE_MERGE_WINDOW * 1000;
 961            }
 962        }
 963    }
 964
 965    public Message next() {
 966        if (this.conversation instanceof Conversation) {
 967            final Conversation conversation = (Conversation) this.conversation;
 968            synchronized (conversation.messages) {
 969                if (this.mNextMessage == null) {
 970                    int index = conversation.messages.indexOf(this);
 971                    if (index < 0 || index >= conversation.messages.size() - 1) {
 972                        this.mNextMessage = null;
 973                    } else {
 974                        this.mNextMessage = conversation.messages.get(index + 1);
 975                    }
 976                }
 977                return this.mNextMessage;
 978            }
 979        } else {
 980            throw new AssertionError("Calling next should be disabled for stubs");
 981        }
 982    }
 983
 984    public Message prev() {
 985        if (this.conversation instanceof Conversation) {
 986            final Conversation conversation = (Conversation) this.conversation;
 987            synchronized (conversation.messages) {
 988                if (this.mPreviousMessage == null) {
 989                    int index = conversation.messages.indexOf(this);
 990                    if (index <= 0 || index > conversation.messages.size()) {
 991                        this.mPreviousMessage = null;
 992                    } else {
 993                        this.mPreviousMessage = conversation.messages.get(index - 1);
 994                    }
 995                }
 996            }
 997            return this.mPreviousMessage;
 998        } else {
 999            throw new AssertionError("Calling prev should be disabled for stubs");
1000        }
1001    }
1002
1003    public boolean isLastCorrectableMessage() {
1004        Message next = next();
1005        while (next != null) {
1006            if (next.isEditable()) {
1007                return false;
1008            }
1009            next = next.next();
1010        }
1011        return isEditable();
1012    }
1013
1014    public boolean isEditable() {
1015        return status != STATUS_RECEIVED && !isCarbon() && type != Message.TYPE_RTP_SESSION;
1016    }
1017
1018    public boolean mergeable(final Message message) {
1019        return false; // Merrgine messages messes up reply, so disable for now
1020    }
1021
1022    private static boolean isStatusMergeable(int a, int b) {
1023        return a == b || (
1024                (a == Message.STATUS_SEND_RECEIVED && b == Message.STATUS_UNSEND)
1025                        || (a == Message.STATUS_SEND_RECEIVED && b == Message.STATUS_SEND)
1026                        || (a == Message.STATUS_SEND_RECEIVED && b == Message.STATUS_WAITING)
1027                        || (a == Message.STATUS_SEND && b == Message.STATUS_UNSEND)
1028                        || (a == Message.STATUS_SEND && b == Message.STATUS_WAITING)
1029        );
1030    }
1031
1032    private static boolean isEncryptionMergeable(final int a, final int b) {
1033        return a == b
1034                && Arrays.asList(ENCRYPTION_NONE, ENCRYPTION_DECRYPTED, ENCRYPTION_AXOLOTL)
1035                        .contains(a);
1036    }
1037
1038    public void setCounterparts(List<MucOptions.User> counterparts) {
1039        this.counterparts = counterparts;
1040    }
1041
1042    public List<MucOptions.User> getCounterparts() {
1043        return this.counterparts;
1044    }
1045
1046    @Override
1047    public int getAvatarBackgroundColor() {
1048        if (type == Message.TYPE_STATUS && getCounterparts() != null && getCounterparts().size() > 1) {
1049            return Color.TRANSPARENT;
1050        } else {
1051            return UIHelper.getColorForName(UIHelper.getMessageDisplayName(this));
1052        }
1053    }
1054
1055    @Override
1056    public String getAvatarName() {
1057        return UIHelper.getMessageDisplayName(this);
1058    }
1059
1060    public boolean isOOb() {
1061        return oob || getFileParams().url != null;
1062    }
1063
1064    public static class MergeSeparator {
1065    }
1066
1067    public SpannableStringBuilder getSpannableBody(GetThumbnailForCid thumbnailer, Drawable fallbackImg) {
1068        SpannableStringBuilder spannableBody;
1069        final Element html = getHtml();
1070        if (html == null || Build.VERSION.SDK_INT < 24) {
1071            spannableBody = new SpannableStringBuilder(MessageUtils.filterLtrRtl(getBody(getInReplyTo() != null)).trim());
1072            spannableBody.setSpan(PLAIN_TEXT_SPAN, 0, spannableBody.length(), 0); // Let adapter know it can do more formatting
1073        } else {
1074            SpannableStringBuilder spannable = new SpannableStringBuilder(Html.fromHtml(
1075                MessageUtils.filterLtrRtl(html.toString()).trim(),
1076                Html.FROM_HTML_MODE_COMPACT,
1077                (source) -> {
1078                   try {
1079                       if (thumbnailer == null || source == null) {
1080                           return fallbackImg;
1081                       }
1082                       Cid cid = BobTransfer.cid(new URI(source));
1083                       if (cid == null) {
1084                           return fallbackImg;
1085                       }
1086                       Drawable thumbnail = thumbnailer.getThumbnail(cid);
1087                       if (thumbnail == null) {
1088                           return fallbackImg;
1089                       }
1090                       return thumbnail;
1091                   } catch (final URISyntaxException e) {
1092                       return fallbackImg;
1093                   }
1094                },
1095                (opening, tag, output, xmlReader) -> {}
1096            ));
1097
1098            // Make images clickable and long-clickable with BetterLinkMovementMethod
1099            ImageSpan[] imageSpans = spannable.getSpans(0, spannable.length(), ImageSpan.class);
1100            for (ImageSpan span : imageSpans) {
1101                final int start = spannable.getSpanStart(span);
1102                final int end = spannable.getSpanEnd(span);
1103
1104                ClickableSpan click_span = new ClickableSpan() {
1105                    @Override
1106                    public void onClick(View widget) { }
1107                };
1108
1109                spannable.removeSpan(span);
1110                spannable.setSpan(new InlineImageSpan(span.getDrawable(), span.getSource()), start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
1111                spannable.setSpan(click_span, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
1112            }
1113
1114            // https://stackoverflow.com/a/10187511/8611
1115            int i = spannable.length();
1116            while(--i >= 0 && Character.isWhitespace(spannable.charAt(i))) { }
1117            spannableBody = (SpannableStringBuilder) spannable.subSequence(0, i+1);
1118        }
1119
1120        if (getInReplyTo() != null && getModerated() == null) {
1121            // Don't show quote if it's the message right before us
1122            if (prev() != null && prev().getUuid().equals(getInReplyTo().getUuid())) return spannableBody;
1123
1124            final var quote = getInReplyTo().getSpannableBody(thumbnailer, fallbackImg);
1125            if ((getInReplyTo().isFileOrImage() || getInReplyTo().isOOb()) && getInReplyTo().getFileParams() != null) {
1126                quote.insert(0, "🖼️");
1127                final var cid = getInReplyTo().getFileParams().getCids().size() < 1 ? null : getInReplyTo().getFileParams().getCids().get(0);
1128                Drawable thumbnail = thumbnailer == null || cid == null ? null : thumbnailer.getThumbnail(cid);
1129                if (thumbnail == null) thumbnail = fallbackImg;
1130                if (thumbnail != null) {
1131                    quote.setSpan(new InlineImageSpan(thumbnail, cid == null ? null : cid.toString()), 0, 2, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
1132                }
1133            }
1134            quote.setSpan(new android.text.style.QuoteSpan(), 0, quote.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
1135            spannableBody.insert(0, "\n");
1136            spannableBody.insert(0, quote);
1137        }
1138
1139        return spannableBody;
1140    }
1141
1142    public SpannableStringBuilder getMergedBody() {
1143        return getMergedBody(null, null);
1144    }
1145
1146    public SpannableStringBuilder getMergedBody(GetThumbnailForCid thumbnailer, Drawable fallbackImg) {
1147        SpannableStringBuilder body = getSpannableBody(thumbnailer, fallbackImg);
1148        Message current = this;
1149        while (current.mergeable(current.next())) {
1150            current = current.next();
1151            if (current == null || current.getModerated() != null) {
1152                break;
1153            }
1154            body.append("\n\n");
1155            body.setSpan(new MergeSeparator(), body.length() - 2, body.length(),
1156                    SpannableStringBuilder.SPAN_EXCLUSIVE_EXCLUSIVE);
1157            body.append(current.getSpannableBody(thumbnailer, fallbackImg));
1158        }
1159        return body;
1160    }
1161
1162    public boolean hasMeCommand() {
1163        return this.body.trim().startsWith(ME_COMMAND);
1164    }
1165
1166    public int getMergedStatus() {
1167        int status = this.status;
1168        Message current = this;
1169        while (current.mergeable(current.next())) {
1170            current = current.next();
1171            if (current == null) {
1172                break;
1173            }
1174            status = current.status;
1175        }
1176        return status;
1177    }
1178
1179    public long getMergedTimeSent() {
1180        long time = this.timeSent;
1181        Message current = this;
1182        while (current.mergeable(current.next())) {
1183            current = current.next();
1184            if (current == null) {
1185                break;
1186            }
1187            time = current.timeSent;
1188        }
1189        return time;
1190    }
1191
1192    public boolean wasMergedIntoPrevious(XmppConnectionService xmppConnectionService) {
1193        Message prev = this.prev();
1194        if (prev != null && getModerated() != null && prev.getModerated() != null) return true;
1195        if (getOccupantId() != null && xmppConnectionService != null) {
1196            final boolean muted = getStatus() == Message.STATUS_RECEIVED && conversation.getMode() == Conversation.MODE_MULTI && xmppConnectionService.isMucUserMuted(new MucOptions.User(null, conversation.getJid(), getOccupantId(), null, null));
1197            if (prev != null && muted && getOccupantId().equals(prev.getOccupantId())) return true;
1198        }
1199        return prev != null && prev.mergeable(this);
1200    }
1201
1202    public boolean trusted() {
1203        Contact contact = this.getContact();
1204        return status > STATUS_RECEIVED || (contact != null && (contact.showInContactList() || contact.isSelf()));
1205    }
1206
1207    public boolean fixCounterpart() {
1208        final Presences presences = conversation.getContact().getPresences();
1209        if (counterpart != null && presences.has(Strings.nullToEmpty(counterpart.getResource()))) {
1210            return true;
1211        } else if (presences.size() >= 1) {
1212            counterpart = PresenceSelector.getNextCounterpart(getContact(), presences.toResourceArray()[0]);
1213            return true;
1214        } else {
1215            counterpart = null;
1216            return false;
1217        }
1218    }
1219
1220    public void setUuid(String uuid) {
1221        this.uuid = uuid;
1222    }
1223
1224    public String getEditedId() {
1225        if (edits.size() > 0) {
1226            return edits.get(edits.size() - 1).getEditedId();
1227        } else {
1228            throw new IllegalStateException("Attempting to store unedited message");
1229        }
1230    }
1231
1232    public String getEditedIdWireFormat() {
1233        if (edits.size() > 0) {
1234            return edits.get(Config.USE_LMC_VERSION_1_1 ? 0 : edits.size() - 1).getEditedId();
1235        } else {
1236            throw new IllegalStateException("Attempting to store unedited message");
1237        }
1238    }
1239
1240    public List<URI> getLinks() {
1241        SpannableStringBuilder text = new SpannableStringBuilder(
1242            getBody().replaceAll("^>.*", "") // Remove quotes
1243        );
1244        return MyLinkify.extractLinks(text).stream().map((url) -> {
1245            try {
1246                return new URI(url);
1247            } catch (final URISyntaxException e) {
1248                return null;
1249            }
1250        }).filter(x -> x != null).collect(Collectors.toList());
1251    }
1252
1253    public URI getOob() {
1254        final String url = getFileParams().url;
1255        try {
1256            return url == null ? null : new URI(url);
1257        } catch (final URISyntaxException e) {
1258            return null;
1259        }
1260    }
1261
1262    public void clearPayloads() {
1263        this.payloads.clear();
1264    }
1265
1266    public void addPayload(Element el) {
1267        if (el == null) return;
1268
1269        this.payloads.add(el);
1270    }
1271
1272    public List<Element> getPayloads() {
1273       return new ArrayList<>(this.payloads);
1274    }
1275
1276    public List<Element> getFallbacks(String... includeFor) {
1277        List<Element> fallbacks = new ArrayList<>();
1278
1279        if (this.payloads == null) return fallbacks;
1280
1281        for (Element el : this.payloads) {
1282            if (el.getName().equals("fallback") && el.getNamespace().equals("urn:xmpp:fallback:0")) {
1283                final String fallbackFor = el.getAttribute("for");
1284                if (fallbackFor == null) continue;
1285                for (String includeOne : includeFor) {
1286                    if (fallbackFor.equals(includeOne)) {
1287                        fallbacks.add(el);
1288                        break;
1289                    }
1290                }
1291            }
1292        }
1293
1294        return fallbacks;
1295    }
1296
1297    public Element getHtml() {
1298        return getHtml(false);
1299    }
1300
1301    public Element getHtml(boolean root) {
1302        if (this.payloads == null) return null;
1303
1304        for (Element el : this.payloads) {
1305            if (el.getName().equals("html") && el.getNamespace().equals("http://jabber.org/protocol/xhtml-im")) {
1306                return root ? el : el.getChildren().get(0);
1307            }
1308        }
1309
1310        return null;
1311   }
1312
1313    public List<Element> getCommands() {
1314        if (this.payloads == null) return null;
1315
1316        for (Element el : this.payloads) {
1317            if (el.getName().equals("query") && el.getNamespace().equals("http://jabber.org/protocol/disco#items") && el.getAttribute("node").equals("http://jabber.org/protocol/commands")) {
1318                return el.getChildren();
1319            }
1320        }
1321
1322        return null;
1323    }
1324
1325    public String getMimeType() {
1326        String extension;
1327        if (relativeFilePath != null) {
1328            extension = MimeUtils.extractRelevantExtension(relativeFilePath);
1329        } else {
1330            final String url = URL.tryParse(getOob() == null ? body.split("\n")[0] : getOob().toString());
1331            if (url == null) {
1332                return null;
1333            }
1334            extension = MimeUtils.extractRelevantExtension(url);
1335        }
1336        return MimeUtils.guessMimeTypeFromExtension(extension);
1337    }
1338
1339    public synchronized boolean treatAsDownloadable() {
1340        if (treatAsDownloadable == null) {
1341            treatAsDownloadable = MessageUtils.treatAsDownloadable(this.body, isOOb());
1342        }
1343        return treatAsDownloadable;
1344    }
1345
1346    public synchronized boolean hasCustomEmoji() {
1347        if (getHtml() != null) {
1348            SpannableStringBuilder spannable = getSpannableBody(null, null);
1349            ImageSpan[] imageSpans = spannable.getSpans(0, spannable.length(), ImageSpan.class);
1350            return imageSpans.length > 0;
1351        }
1352
1353        return false;
1354    }
1355
1356    public synchronized boolean bodyIsOnlyEmojis() {
1357        if (isEmojisOnly == null) {
1358            isEmojisOnly = Emoticons.isOnlyEmoji(getBody());
1359            if (isEmojisOnly) return true;
1360
1361            if (getHtml() != null) {
1362                SpannableStringBuilder spannable = getSpannableBody(null, null);
1363                ImageSpan[] imageSpans = spannable.getSpans(0, spannable.length(), ImageSpan.class);
1364                for (ImageSpan span : imageSpans) {
1365                    final int start = spannable.getSpanStart(span);
1366                    final int end = spannable.getSpanEnd(span);
1367                    spannable.delete(start, end);
1368                }
1369                final String after = spannable.toString().replaceAll("\\s", "");
1370                isEmojisOnly = after.length() == 0 || Emoticons.isOnlyEmoji(after);
1371            }
1372        }
1373        return isEmojisOnly;
1374    }
1375
1376    public synchronized boolean isGeoUri() {
1377        if (isGeoUri == null) {
1378            isGeoUri = GeoHelper.GEO_URI.matcher(body).matches();
1379        }
1380        return isGeoUri;
1381    }
1382
1383    protected List<Element> getSims() {
1384        return payloads.stream().filter(el ->
1385            el.getName().equals("reference") && el.getNamespace().equals("urn:xmpp:reference:0") &&
1386            el.findChild("media-sharing", "urn:xmpp:sims:1") != null
1387        ).collect(Collectors.toList());
1388    }
1389
1390    public synchronized void resetFileParams() {
1391        this.oob = false;
1392        this.fileParams = null;
1393        this.transferable = null;
1394        this.payloads.removeAll(getSims());
1395        clearFallbacks(Namespace.OOB);
1396        setType(isPrivateMessage() ? TYPE_PRIVATE : TYPE_TEXT);
1397    }
1398
1399    public synchronized void setFileParams(FileParams fileParams) {
1400        if (fileParams != null && this.fileParams != null && this.fileParams.sims != null && fileParams.sims == null) {
1401            fileParams.sims = this.fileParams.sims;
1402        }
1403        this.fileParams = fileParams;
1404        if (fileParams != null && getSims().isEmpty()) {
1405            addPayload(fileParams.toSims());
1406        }
1407    }
1408
1409    public synchronized FileParams getFileParams() {
1410        if (fileParams == null) {
1411            List<Element> sims = getSims();
1412            fileParams = sims.isEmpty() ? new FileParams(oob ? this.body : "") : new FileParams(sims.get(0));
1413            if (this.transferable != null) {
1414                fileParams.size = this.transferable.getFileSize();
1415            }
1416        }
1417
1418        return fileParams;
1419    }
1420
1421    private static int parseInt(String value) {
1422        try {
1423            return Integer.parseInt(value);
1424        } catch (NumberFormatException e) {
1425            return 0;
1426        }
1427    }
1428
1429    public void untie() {
1430        this.mNextMessage = null;
1431        this.mPreviousMessage = null;
1432    }
1433
1434    public boolean isPrivateMessage() {
1435        return type == TYPE_PRIVATE || type == TYPE_PRIVATE_FILE;
1436    }
1437
1438    public boolean isFileOrImage() {
1439        return type == TYPE_FILE || type == TYPE_IMAGE || type == TYPE_PRIVATE_FILE;
1440    }
1441
1442
1443    public boolean isTypeText() {
1444        return type == TYPE_TEXT || type == TYPE_PRIVATE;
1445    }
1446
1447    public boolean hasFileOnRemoteHost() {
1448        return isFileOrImage() && getFileParams().url != null;
1449    }
1450
1451    public boolean needsUploading() {
1452        return isFileOrImage() && getFileParams().url == null;
1453    }
1454
1455    public static class FileParams {
1456        public String url;
1457        public Long size = null;
1458        public int width = 0;
1459        public int height = 0;
1460        public int runtime = 0;
1461        public Element sims = null;
1462
1463        public FileParams() { }
1464
1465        public FileParams(Element el) {
1466            if (el.getName().equals("x") && el.getNamespace().equals(Namespace.OOB)) {
1467                this.url = el.findChildContent("url", Namespace.OOB);
1468            }
1469            if (el.getName().equals("reference") && el.getNamespace().equals("urn:xmpp:reference:0")) {
1470                sims = el;
1471                final String refUri = el.getAttribute("uri");
1472                if (refUri != null) url = refUri;
1473                final Element mediaSharing = el.findChild("media-sharing", "urn:xmpp:sims:1");
1474                if (mediaSharing != null) {
1475                    Element file = mediaSharing.findChild("file", "urn:xmpp:jingle:apps:file-transfer:5");
1476                    if (file == null) file = mediaSharing.findChild("file", "urn:xmpp:jingle:apps:file-transfer:4");
1477                    if (file == null) file = mediaSharing.findChild("file", "urn:xmpp:jingle:apps:file-transfer:3");
1478                    if (file != null) {
1479                        try {
1480                            String sizeS = file.findChildContent("size", file.getNamespace());
1481                            if (sizeS != null) size = new Long(sizeS);
1482                            String widthS = file.findChildContent("width", "https://schema.org/");
1483                            if (widthS != null) width = parseInt(widthS);
1484                            String heightS = file.findChildContent("height", "https://schema.org/");
1485                            if (heightS != null) height = parseInt(heightS);
1486                            String durationS = file.findChildContent("duration", "https://schema.org/");
1487                            if (durationS != null) runtime = (int)(Duration.parse(durationS).toMillis() / 1000L);
1488                        } catch (final NumberFormatException e) {
1489                            Log.w(Config.LOGTAG, "Trouble parsing as number: " + e);
1490                        }
1491                    }
1492
1493                    final Element sources = mediaSharing.findChild("sources", "urn:xmpp:sims:1");
1494                    if (sources != null) {
1495                        final Element ref = sources.findChild("reference", "urn:xmpp:reference:0");
1496                        if (ref != null) url = ref.getAttribute("uri");
1497                    }
1498                }
1499            }
1500        }
1501
1502        public FileParams(String ser) {
1503            final String[] parts = ser == null ? new String[0] : ser.split("\\|");
1504            switch (parts.length) {
1505                case 1:
1506                    try {
1507                        this.size = Long.parseLong(parts[0]);
1508                    } catch (final NumberFormatException e) {
1509                        this.url = URL.tryParse(parts[0]);
1510                    }
1511                    break;
1512                case 5:
1513                    this.runtime = parseInt(parts[4]);
1514                case 4:
1515                    this.width = parseInt(parts[2]);
1516                    this.height = parseInt(parts[3]);
1517                case 2:
1518                    this.url = URL.tryParse(parts[0]);
1519                    this.size = Longs.tryParse(parts[1]);
1520                    break;
1521                case 3:
1522                    this.size = Longs.tryParse(parts[0]);
1523                    this.width = parseInt(parts[1]);
1524                    this.height = parseInt(parts[2]);
1525                    break;
1526            }
1527        }
1528
1529        public boolean isEmpty() {
1530            return StringUtils.nullOnEmpty(toString()) == null && StringUtils.nullOnEmpty(toSims().getContent()) == null;
1531        }
1532
1533        public long getSize() {
1534            return size == null ? 0 : size;
1535        }
1536
1537        public String getName() {
1538            Element file = getFileElement();
1539            if (file == null) return null;
1540
1541            return file.findChildContent("name", file.getNamespace());
1542        }
1543
1544        public void setName(final String name) {
1545            if (sims == null) toSims();
1546            Element file = getFileElement();
1547
1548            for (Element child : file.getChildren()) {
1549                if (child.getName().equals("name") && child.getNamespace().equals(file.getNamespace())) {
1550                    file.removeChild(child);
1551                }
1552            }
1553
1554            if (name != null) {
1555                file.addChild("name", file.getNamespace()).setContent(name);
1556            }
1557        }
1558
1559        public String getMediaType() {
1560            Element file = getFileElement();
1561            if (file == null) return null;
1562
1563            return file.findChildContent("media-type", file.getNamespace());
1564        }
1565
1566        public void setMediaType(final String mime) {
1567            if (sims == null) toSims();
1568            Element file = getFileElement();
1569
1570            for (Element child : file.getChildren()) {
1571                if (child.getName().equals("media-type") && child.getNamespace().equals(file.getNamespace())) {
1572                    file.removeChild(child);
1573                }
1574            }
1575
1576            if (mime != null) {
1577                file.addChild("media-type", file.getNamespace()).setContent(mime);
1578            }
1579        }
1580
1581        public Element toSims() {
1582            if (sims == null) sims = new Element("reference", "urn:xmpp:reference:0");
1583            sims.setAttribute("type", "data");
1584            Element mediaSharing = sims.findChild("media-sharing", "urn:xmpp:sims:1");
1585            if (mediaSharing == null) mediaSharing = sims.addChild("media-sharing", "urn:xmpp:sims:1");
1586
1587            Element file = mediaSharing.findChild("file", "urn:xmpp:jingle:apps:file-transfer:5");
1588            if (file == null) file = mediaSharing.findChild("file", "urn:xmpp:jingle:apps:file-transfer:4");
1589            if (file == null) file = mediaSharing.findChild("file", "urn:xmpp:jingle:apps:file-transfer:3");
1590            if (file == null) file = mediaSharing.addChild("file", "urn:xmpp:jingle:apps:file-transfer:5");
1591
1592            file.removeChild(file.findChild("size", file.getNamespace()));
1593            if (size != null) file.addChild("size", file.getNamespace()).setContent(size.toString());
1594
1595            file.removeChild(file.findChild("width", "https://schema.org/"));
1596            if (width > 0) file.addChild("width", "https://schema.org/").setContent(String.valueOf(width));
1597
1598            file.removeChild(file.findChild("height", "https://schema.org/"));
1599            if (height > 0) file.addChild("height", "https://schema.org/").setContent(String.valueOf(height));
1600
1601            file.removeChild(file.findChild("duration", "https://schema.org/"));
1602            if (runtime > 0) file.addChild("duration", "https://schema.org/").setContent("PT" + runtime + "S");
1603
1604            if (url != null) {
1605                Element sources = mediaSharing.findChild("sources", mediaSharing.getNamespace());
1606                if (sources == null) sources = mediaSharing.addChild("sources", mediaSharing.getNamespace());
1607
1608                Element source = sources.findChild("reference", "urn:xmpp:reference:0");
1609                if (source == null) source = sources.addChild("reference", "urn:xmpp:reference:0");
1610                source.setAttribute("type", "data");
1611                source.setAttribute("uri", url);
1612            }
1613
1614            return sims;
1615        }
1616
1617        protected Element getFileElement() {
1618            Element file = null;
1619            if (sims == null) return file;
1620
1621            Element mediaSharing = sims.findChild("media-sharing", "urn:xmpp:sims:1");
1622            if (mediaSharing == null) return file;
1623            file = mediaSharing.findChild("file", "urn:xmpp:jingle:apps:file-transfer:5");
1624            if (file == null) file = mediaSharing.findChild("file", "urn:xmpp:jingle:apps:file-transfer:4");
1625            if (file == null) file = mediaSharing.findChild("file", "urn:xmpp:jingle:apps:file-transfer:3");
1626            return file;
1627        }
1628
1629        public void setCids(Iterable<Cid> cids) throws NoSuchAlgorithmException {
1630            if (sims == null) toSims();
1631            Element file = getFileElement();
1632
1633            for (Element child : file.getChildren()) {
1634                if (child.getName().equals("hash") && child.getNamespace().equals("urn:xmpp:hashes:2")) {
1635                    file.removeChild(child);
1636                }
1637            }
1638
1639            for (Cid cid : cids) {
1640                file.addChild("hash", "urn:xmpp:hashes:2")
1641                    .setAttribute("algo", CryptoHelper.multihashAlgo(cid.getType()))
1642                    .setContent(Base64.encodeToString(cid.getHash(), Base64.NO_WRAP));
1643            }
1644        }
1645
1646        public List<Cid> getCids() {
1647            List<Cid> cids = new ArrayList<>();
1648            Element file = getFileElement();
1649            if (file == null) return cids;
1650
1651            for (Element child : file.getChildren()) {
1652                if (child.getName().equals("hash") && child.getNamespace().equals("urn:xmpp:hashes:2")) {
1653                    try {
1654                        cids.add(CryptoHelper.cid(Base64.decode(child.getContent(), Base64.DEFAULT), child.getAttribute("algo")));
1655                    } catch (final NoSuchAlgorithmException | IllegalStateException e) { }
1656                }
1657            }
1658
1659            cids.sort((x, y) -> y.getType().compareTo(x.getType()));
1660
1661            return cids;
1662        }
1663
1664        public void addThumbnail(int width, int height, String mimeType, String uri) {
1665            for (Element thumb : getThumbnails()) {
1666                if (uri.equals(thumb.getAttribute("uri"))) return;
1667            }
1668
1669            if (sims == null) toSims();
1670            Element file = getFileElement();
1671            file.addChild(
1672                new Element("thumbnail", "urn:xmpp:thumbs:1")
1673                    .setAttribute("width", Integer.toString(width))
1674                    .setAttribute("height", Integer.toString(height))
1675                    .setAttribute("type", mimeType)
1676                    .setAttribute("uri", uri)
1677            );
1678        }
1679
1680        public List<Element> getThumbnails() {
1681            List<Element> thumbs = new ArrayList<>();
1682            Element file = getFileElement();
1683            if (file == null) return thumbs;
1684
1685            for (Element child : file.getChildren()) {
1686                if (child.getName().equals("thumbnail") && child.getNamespace().equals("urn:xmpp:thumbs:1")) {
1687                    thumbs.add(child);
1688                }
1689            }
1690
1691            return thumbs;
1692        }
1693
1694        public String toString() {
1695            final StringBuilder builder = new StringBuilder();
1696            if (url != null) builder.append(url);
1697            if (size != null) builder.append('|').append(size.toString());
1698            if (width > 0 || height > 0 || runtime > 0) builder.append('|').append(width);
1699            if (height > 0 || runtime > 0) builder.append('|').append(height);
1700            if (runtime > 0) builder.append('|').append(runtime);
1701            return builder.toString();
1702        }
1703
1704        public boolean equals(Object o) {
1705            if (!(o instanceof FileParams)) return false;
1706            if (url == null) return false;
1707
1708            return url.equals(((FileParams) o).url);
1709        }
1710
1711        public int hashCode() {
1712            return url == null ? super.hashCode() : url.hashCode();
1713        }
1714    }
1715
1716    public void setFingerprint(String fingerprint) {
1717        this.axolotlFingerprint = fingerprint;
1718    }
1719
1720    public String getFingerprint() {
1721        return axolotlFingerprint;
1722    }
1723
1724    public boolean isTrusted() {
1725        final AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
1726        final FingerprintStatus s = axolotlService != null ? axolotlService.getFingerprintTrust(axolotlFingerprint) : null;
1727        return s != null && s.isTrusted();
1728    }
1729
1730    private int getPreviousEncryption() {
1731        for (Message iterator = this.prev(); iterator != null; iterator = iterator.prev()) {
1732            if (iterator.isCarbon() || iterator.getStatus() == STATUS_RECEIVED) {
1733                continue;
1734            }
1735            return iterator.getEncryption();
1736        }
1737        return ENCRYPTION_NONE;
1738    }
1739
1740    private int getNextEncryption() {
1741        if (this.conversation instanceof Conversation) {
1742            Conversation conversation = (Conversation) this.conversation;
1743            for (Message iterator = this.next(); iterator != null; iterator = iterator.next()) {
1744                if (iterator.isCarbon() || iterator.getStatus() == STATUS_RECEIVED) {
1745                    continue;
1746                }
1747                return iterator.getEncryption();
1748            }
1749            return conversation.getNextEncryption();
1750        } else {
1751            throw new AssertionError("This should never be called since isInValidSession should be disabled for stubs");
1752        }
1753    }
1754
1755    public boolean isValidInSession() {
1756        int pastEncryption = getCleanedEncryption(this.getPreviousEncryption());
1757        int futureEncryption = getCleanedEncryption(this.getNextEncryption());
1758
1759        boolean inUnencryptedSession = pastEncryption == ENCRYPTION_NONE
1760                || futureEncryption == ENCRYPTION_NONE
1761                || pastEncryption != futureEncryption;
1762
1763        return inUnencryptedSession || getCleanedEncryption(this.getEncryption()) == pastEncryption;
1764    }
1765
1766    private static int getCleanedEncryption(int encryption) {
1767        if (encryption == ENCRYPTION_DECRYPTED || encryption == ENCRYPTION_DECRYPTION_FAILED) {
1768            return ENCRYPTION_PGP;
1769        }
1770        if (encryption == ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE || encryption == ENCRYPTION_AXOLOTL_FAILED) {
1771            return ENCRYPTION_AXOLOTL;
1772        }
1773        return encryption;
1774    }
1775
1776    public static boolean configurePrivateMessage(final Message message) {
1777        return configurePrivateMessage(message, false);
1778    }
1779
1780    public static boolean configurePrivateFileMessage(final Message message) {
1781        return configurePrivateMessage(message, true);
1782    }
1783
1784    private static boolean configurePrivateMessage(final Message message, final boolean isFile) {
1785        final Conversation conversation;
1786        if (message.conversation instanceof Conversation) {
1787            conversation = (Conversation) message.conversation;
1788        } else {
1789            return false;
1790        }
1791        if (conversation.getMode() == Conversation.MODE_MULTI) {
1792            final Jid nextCounterpart = conversation.getNextCounterpart();
1793            return configurePrivateMessage(conversation, message, nextCounterpart, isFile);
1794        }
1795        return false;
1796    }
1797
1798    public static boolean configurePrivateMessage(final Message message, final Jid counterpart) {
1799        final Conversation conversation;
1800        if (message.conversation instanceof Conversation) {
1801            conversation = (Conversation) message.conversation;
1802        } else {
1803            return false;
1804        }
1805        return configurePrivateMessage(conversation, message, counterpart, false);
1806    }
1807
1808    private static boolean configurePrivateMessage(final Conversation conversation, final Message message, final Jid counterpart, final boolean isFile) {
1809        if (counterpart == null) {
1810            return false;
1811        }
1812        message.setCounterpart(counterpart);
1813        message.setTrueCounterpart(conversation.getMucOptions().getTrueCounterpart(counterpart));
1814        message.setType(isFile ? Message.TYPE_PRIVATE_FILE : Message.TYPE_PRIVATE);
1815        return true;
1816    }
1817
1818    public static class PlainTextSpan {}
1819}