1package eu.siacs.conversations.persistance;
   2
   3import android.annotation.TargetApi;
   4import android.content.ContentResolver;
   5import android.content.Context;
   6import android.content.Intent;
   7import android.database.Cursor;
   8import android.graphics.Bitmap;
   9import android.graphics.BitmapFactory;
  10import android.graphics.Canvas;
  11import android.graphics.Color;
  12import android.graphics.Matrix;
  13import android.graphics.Paint;
  14import android.graphics.RectF;
  15import android.media.MediaMetadataRetriever;
  16import android.net.Uri;
  17import android.os.Build;
  18import android.os.Environment;
  19import android.os.ParcelFileDescriptor;
  20import android.provider.MediaStore;
  21import android.provider.OpenableColumns;
  22import android.support.v4.content.FileProvider;
  23import android.system.Os;
  24import android.system.StructStat;
  25import android.util.Base64;
  26import android.util.Base64OutputStream;
  27import android.util.Log;
  28import android.util.LruCache;
  29
  30import java.io.ByteArrayOutputStream;
  31import java.io.Closeable;
  32import java.io.File;
  33import java.io.FileDescriptor;
  34import java.io.FileInputStream;
  35import java.io.FileNotFoundException;
  36import java.io.FileOutputStream;
  37import java.io.IOException;
  38import java.io.InputStream;
  39import java.io.OutputStream;
  40import java.net.Socket;
  41import java.net.URL;
  42import java.security.DigestOutputStream;
  43import java.security.MessageDigest;
  44import java.security.NoSuchAlgorithmException;
  45import java.text.SimpleDateFormat;
  46import java.util.Date;
  47import java.util.List;
  48import java.util.Locale;
  49import java.util.UUID;
  50
  51import eu.siacs.conversations.Config;
  52import eu.siacs.conversations.R;
  53import eu.siacs.conversations.entities.DownloadableFile;
  54import eu.siacs.conversations.entities.Message;
  55import eu.siacs.conversations.services.XmppConnectionService;
  56import eu.siacs.conversations.ui.RecordingActivity;
  57import eu.siacs.conversations.ui.util.Attachment;
  58import eu.siacs.conversations.utils.CryptoHelper;
  59import eu.siacs.conversations.utils.ExifHelper;
  60import eu.siacs.conversations.utils.FileUtils;
  61import eu.siacs.conversations.utils.FileWriterException;
  62import eu.siacs.conversations.utils.MimeUtils;
  63import eu.siacs.conversations.xmpp.pep.Avatar;
  64
  65public class FileBackend {
  66
  67    private static final Object THUMBNAIL_LOCK = new Object();
  68
  69    private static final SimpleDateFormat IMAGE_DATE_FORMAT = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US);
  70
  71    private static final String FILE_PROVIDER = ".files";
  72
  73    private XmppConnectionService mXmppConnectionService;
  74
  75    private static final float IGNORE_PADDING = 0.15f;
  76
  77    public FileBackend(XmppConnectionService service) {
  78        this.mXmppConnectionService = service;
  79    }
  80
  81    private static boolean isInDirectoryThatShouldNotBeScanned(Context context, File file) {
  82        return isInDirectoryThatShouldNotBeScanned(context, file.getAbsolutePath());
  83    }
  84
  85    public static boolean isInDirectoryThatShouldNotBeScanned(Context context, String path) {
  86        for (String type : new String[]{RecordingActivity.STORAGE_DIRECTORY_TYPE_NAME, "Files"}) {
  87            if (path.startsWith(getConversationsDirectory(context, type))) {
  88                return true;
  89            }
  90        }
  91        return false;
  92    }
  93
  94    public static long getFileSize(Context context, Uri uri) {
  95        try {
  96            final Cursor cursor = context.getContentResolver().query(uri, null, null, null, null);
  97            if (cursor != null && cursor.moveToFirst()) {
  98                long size = cursor.getLong(cursor.getColumnIndex(OpenableColumns.SIZE));
  99                cursor.close();
 100                return size;
 101            } else {
 102                return -1;
 103            }
 104        } catch (Exception e) {
 105            return -1;
 106        }
 107    }
 108
 109    public static boolean allFilesUnderSize(Context context, List<Attachment> attachments, long max) {
 110        if (max <= 0) {
 111            Log.d(Config.LOGTAG, "server did not report max file size for http upload");
 112            return true; //exception to be compatible with HTTP Upload < v0.2
 113        }
 114        for (Attachment attachment : attachments) {
 115            if (attachment.getType() != Attachment.Type.FILE) {
 116                continue;
 117            }
 118            String mime = attachment.getMime();
 119            if (mime != null && mime.startsWith("video/")) {
 120                try {
 121                    Dimensions dimensions = FileBackend.getVideoDimensions(context, attachment.getUri());
 122                    if (dimensions.getMin() > 720) {
 123                        Log.d(Config.LOGTAG, "do not consider video file with min width larger than 720 for size check");
 124                        continue;
 125                    }
 126                } catch (NotAVideoFile notAVideoFile) {
 127                    //ignore and fall through
 128                }
 129            }
 130            if (FileBackend.getFileSize(context, attachment.getUri()) > max) {
 131                Log.d(Config.LOGTAG, "not all files are under " + max + " bytes. suggesting falling back to jingle");
 132                return false;
 133            }
 134        }
 135        return true;
 136    }
 137
 138    public static String getConversationsDirectory(Context context, final String type) {
 139        if (Config.ONLY_INTERNAL_STORAGE) {
 140            return context.getFilesDir().getAbsolutePath() + "/" + type + "/";
 141        } else {
 142            return getAppMediaDirectory(context) + context.getString(R.string.app_name) + " " + type + "/";
 143        }
 144    }
 145
 146    public static String getAppMediaDirectory(Context context) {
 147        return Environment.getExternalStorageDirectory().getAbsolutePath() + "/" + context.getString(R.string.app_name) + "/Media/";
 148    }
 149
 150    public static String getConversationsLogsDirectory() {
 151        return Environment.getExternalStorageDirectory().getAbsolutePath() + "/Conversations/";
 152    }
 153
 154    private static Bitmap rotate(Bitmap bitmap, int degree) {
 155        if (degree == 0) {
 156            return bitmap;
 157        }
 158        int w = bitmap.getWidth();
 159        int h = bitmap.getHeight();
 160        Matrix mtx = new Matrix();
 161        mtx.postRotate(degree);
 162        Bitmap result = Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true);
 163        if (bitmap != null && !bitmap.isRecycled()) {
 164            bitmap.recycle();
 165        }
 166        return result;
 167    }
 168
 169    public static boolean isPathBlacklisted(String path) {
 170        final String androidDataPath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Android/data/";
 171        return path.startsWith(androidDataPath);
 172    }
 173
 174    private static Paint createAntiAliasingPaint() {
 175        Paint paint = new Paint();
 176        paint.setAntiAlias(true);
 177        paint.setFilterBitmap(true);
 178        paint.setDither(true);
 179        return paint;
 180    }
 181
 182    private static String getTakePhotoPath() {
 183        return Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM) + "/Camera/";
 184    }
 185
 186    public static Uri getUriForFile(Context context, File file) {
 187        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N || Config.ONLY_INTERNAL_STORAGE) {
 188            try {
 189                return FileProvider.getUriForFile(context, getAuthority(context), file);
 190            } catch (IllegalArgumentException e) {
 191                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 192                    throw new SecurityException(e);
 193                } else {
 194                    return Uri.fromFile(file);
 195                }
 196            }
 197        } else {
 198            return Uri.fromFile(file);
 199        }
 200    }
 201
 202    public static String getAuthority(Context context) {
 203        return context.getPackageName() + FILE_PROVIDER;
 204    }
 205
 206    private static boolean hasAlpha(final Bitmap bitmap) {
 207        for (int x = 0; x < bitmap.getWidth(); ++x) {
 208            for (int y = 0; y < bitmap.getWidth(); ++y) {
 209                if (Color.alpha(bitmap.getPixel(x, y)) < 255) {
 210                    return true;
 211                }
 212            }
 213        }
 214        return false;
 215    }
 216
 217    private static int calcSampleSize(File image, int size) {
 218        BitmapFactory.Options options = new BitmapFactory.Options();
 219        options.inJustDecodeBounds = true;
 220        BitmapFactory.decodeFile(image.getAbsolutePath(), options);
 221        return calcSampleSize(options, size);
 222    }
 223
 224
 225    private static int calcSampleSize(BitmapFactory.Options options, int size) {
 226        int height = options.outHeight;
 227        int width = options.outWidth;
 228        int inSampleSize = 1;
 229
 230        if (height > size || width > size) {
 231            int halfHeight = height / 2;
 232            int halfWidth = width / 2;
 233
 234            while ((halfHeight / inSampleSize) > size
 235                    && (halfWidth / inSampleSize) > size) {
 236                inSampleSize *= 2;
 237            }
 238        }
 239        return inSampleSize;
 240    }
 241
 242    public Bitmap getPreviewForUri(Attachment attachment, int size, boolean cacheOnly) {
 243        final LruCache<String, Bitmap> cache = mXmppConnectionService.getBitmapCache();
 244        Bitmap bitmap = cache.get(attachment.getUuid().toString());
 245        if (bitmap != null || cacheOnly) {
 246            return bitmap;
 247        }
 248        Log.d(Config.LOGTAG,"attachment mime="+attachment.getMime());
 249        if (attachment.getMime() != null && attachment.getMime().startsWith("video/")) {
 250            bitmap = cropCenterSquareVideo(attachment.getUri(), size);
 251            drawOverlay(bitmap, paintOverlayBlack(bitmap) ? R.drawable.play_video_black : R.drawable.play_video_white, 0.75f);
 252        } else {
 253            bitmap = cropCenterSquare(attachment.getUri(), size);
 254            if ("image/gif".equals(attachment.getMime())) {
 255                Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
 256                drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
 257                bitmap.recycle();
 258                bitmap = withGifOverlay;
 259            }
 260        }
 261        cache.put(attachment.getUuid().toString(), bitmap);
 262        return bitmap;
 263    }
 264
 265    private static Dimensions getVideoDimensions(Context context, Uri uri) throws NotAVideoFile {
 266        MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
 267        try {
 268            mediaMetadataRetriever.setDataSource(context, uri);
 269        } catch (RuntimeException e) {
 270            throw new NotAVideoFile(e);
 271        }
 272        return getVideoDimensions(mediaMetadataRetriever);
 273    }
 274
 275    private static Dimensions getVideoDimensionsOfFrame(MediaMetadataRetriever mediaMetadataRetriever) {
 276        Bitmap bitmap = null;
 277        try {
 278            bitmap = mediaMetadataRetriever.getFrameAtTime();
 279            return new Dimensions(bitmap.getHeight(), bitmap.getWidth());
 280        } catch (Exception e) {
 281            return null;
 282        } finally {
 283            if (bitmap != null) {
 284                bitmap.recycle();
 285                ;
 286            }
 287        }
 288    }
 289
 290    private static Dimensions getVideoDimensions(MediaMetadataRetriever metadataRetriever) throws NotAVideoFile {
 291        String hasVideo = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_HAS_VIDEO);
 292        if (hasVideo == null) {
 293            throw new NotAVideoFile();
 294        }
 295        Dimensions dimensions = getVideoDimensionsOfFrame(metadataRetriever);
 296        if (dimensions != null) {
 297            return dimensions;
 298        }
 299        int rotation = extractRotationFromMediaRetriever(metadataRetriever);
 300        boolean rotated = rotation == 90 || rotation == 270;
 301        int height;
 302        try {
 303            String h = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT);
 304            height = Integer.parseInt(h);
 305        } catch (Exception e) {
 306            height = -1;
 307        }
 308        int width;
 309        try {
 310            String w = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH);
 311            width = Integer.parseInt(w);
 312        } catch (Exception e) {
 313            width = -1;
 314        }
 315        metadataRetriever.release();
 316        Log.d(Config.LOGTAG, "extracted video dims " + width + "x" + height);
 317        return rotated ? new Dimensions(width, height) : new Dimensions(height, width);
 318    }
 319
 320    private static int extractRotationFromMediaRetriever(MediaMetadataRetriever metadataRetriever) {
 321        String r = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION);
 322        try {
 323            return Integer.parseInt(r);
 324        } catch (Exception e) {
 325            return 0;
 326        }
 327    }
 328
 329    public static void close(Closeable stream) {
 330        if (stream != null) {
 331            try {
 332                stream.close();
 333            } catch (IOException e) {
 334            }
 335        }
 336    }
 337
 338    public static void close(Socket socket) {
 339        if (socket != null) {
 340            try {
 341                socket.close();
 342            } catch (IOException e) {
 343            }
 344        }
 345    }
 346
 347    public static boolean weOwnFile(Context context, Uri uri) {
 348        if (uri == null || !ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
 349            return false;
 350        } else if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
 351            return fileIsInFilesDir(context, uri);
 352        } else {
 353            return weOwnFileLollipop(uri);
 354        }
 355    }
 356
 357    /**
 358     * This is more than hacky but probably way better than doing nothing
 359     * Further 'optimizations' might contain to get the parents of CacheDir and NoBackupDir
 360     * and check against those as well
 361     */
 362    private static boolean fileIsInFilesDir(Context context, Uri uri) {
 363        try {
 364            final String haystack = context.getFilesDir().getParentFile().getCanonicalPath();
 365            final String needle = new File(uri.getPath()).getCanonicalPath();
 366            return needle.startsWith(haystack);
 367        } catch (IOException e) {
 368            return false;
 369        }
 370    }
 371
 372    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
 373    private static boolean weOwnFileLollipop(Uri uri) {
 374        try {
 375            File file = new File(uri.getPath());
 376            FileDescriptor fd = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY).getFileDescriptor();
 377            StructStat st = Os.fstat(fd);
 378            return st.st_uid == android.os.Process.myUid();
 379        } catch (FileNotFoundException e) {
 380            return false;
 381        } catch (Exception e) {
 382            return true;
 383        }
 384    }
 385
 386    private void createNoMedia(File diretory) {
 387        final File noMedia = new File(diretory, ".nomedia");
 388        if (!noMedia.exists()) {
 389            try {
 390                if (!noMedia.createNewFile()) {
 391                    Log.d(Config.LOGTAG, "created nomedia file " + noMedia.getAbsolutePath());
 392                }
 393            } catch (Exception e) {
 394                Log.d(Config.LOGTAG, "could not create nomedia file");
 395            }
 396        }
 397    }
 398
 399    public void updateMediaScanner(File file) {
 400        if (!isInDirectoryThatShouldNotBeScanned(mXmppConnectionService, file)) {
 401            Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
 402            intent.setData(Uri.fromFile(file));
 403            mXmppConnectionService.sendBroadcast(intent);
 404        } else if (file.getAbsolutePath().startsWith(getAppMediaDirectory(mXmppConnectionService))) {
 405            createNoMedia(file.getParentFile());
 406        }
 407    }
 408
 409    public boolean deleteFile(Message message) {
 410        File file = getFile(message);
 411        if (file.delete()) {
 412            updateMediaScanner(file);
 413            return true;
 414        } else {
 415            return false;
 416        }
 417    }
 418
 419    public DownloadableFile getFile(Message message) {
 420        return getFile(message, true);
 421    }
 422
 423    public DownloadableFile getFileForPath(String path, String mime) {
 424        final DownloadableFile file;
 425        if (path.startsWith("/")) {
 426            file = new DownloadableFile(path);
 427        } else {
 428            if (mime != null && mime.startsWith("image/")) {
 429                file = new DownloadableFile(getConversationsDirectory("Images") + path);
 430            } else if (mime != null && mime.startsWith("video/")) {
 431                file = new DownloadableFile(getConversationsDirectory("Videos") + path);
 432            } else {
 433                file = new DownloadableFile(getConversationsDirectory("Files") + path);
 434            }
 435        }
 436        return file;
 437    }
 438
 439    public DownloadableFile getFile(Message message, boolean decrypted) {
 440        final boolean encrypted = !decrypted
 441                && (message.getEncryption() == Message.ENCRYPTION_PGP
 442                || message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
 443        String path = message.getRelativeFilePath();
 444        if (path == null) {
 445            path = message.getUuid();
 446        }
 447        final DownloadableFile file = getFileForPath(path, message.getMimeType());
 448        if (encrypted) {
 449            return new DownloadableFile(getConversationsDirectory("Files") + file.getName() + ".pgp");
 450        } else {
 451            return file;
 452        }
 453    }
 454
 455    public String getConversationsDirectory(final String type) {
 456        return getConversationsDirectory(mXmppConnectionService, type);
 457    }
 458
 459    private Bitmap resize(final Bitmap originalBitmap, int size) throws IOException {
 460        int w = originalBitmap.getWidth();
 461        int h = originalBitmap.getHeight();
 462        if (w <= 0 || h <= 0) {
 463            throw new IOException("Decoded bitmap reported bounds smaller 0");
 464        } else if (Math.max(w, h) > size) {
 465            int scalledW;
 466            int scalledH;
 467            if (w <= h) {
 468                scalledW = Math.max((int) (w / ((double) h / size)), 1);
 469                scalledH = size;
 470            } else {
 471                scalledW = size;
 472                scalledH = Math.max((int) (h / ((double) w / size)), 1);
 473            }
 474            final Bitmap result = Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true);
 475            if (!originalBitmap.isRecycled()) {
 476                originalBitmap.recycle();
 477            }
 478            return result;
 479        } else {
 480            return originalBitmap;
 481        }
 482    }
 483
 484    public boolean useImageAsIs(Uri uri) {
 485        String path = getOriginalPath(uri);
 486        if (path == null || isPathBlacklisted(path)) {
 487            return false;
 488        }
 489        File file = new File(path);
 490        long size = file.length();
 491        if (size == 0 || size >= mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize)) {
 492            return false;
 493        }
 494        BitmapFactory.Options options = new BitmapFactory.Options();
 495        options.inJustDecodeBounds = true;
 496        try {
 497            BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(uri), null, options);
 498            if (options.outMimeType == null || options.outHeight <= 0 || options.outWidth <= 0) {
 499                return false;
 500            }
 501            return (options.outWidth <= Config.IMAGE_SIZE && options.outHeight <= Config.IMAGE_SIZE && options.outMimeType.contains(Config.IMAGE_FORMAT.name().toLowerCase()));
 502        } catch (FileNotFoundException e) {
 503            return false;
 504        }
 505    }
 506
 507    public String getOriginalPath(Uri uri) {
 508        return FileUtils.getPath(mXmppConnectionService, uri);
 509    }
 510
 511    private void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
 512        Log.d(Config.LOGTAG, "copy file (" + uri.toString() + ") to private storage " + file.getAbsolutePath());
 513        file.getParentFile().mkdirs();
 514        OutputStream os = null;
 515        InputStream is = null;
 516        try {
 517            file.createNewFile();
 518            os = new FileOutputStream(file);
 519            is = mXmppConnectionService.getContentResolver().openInputStream(uri);
 520            byte[] buffer = new byte[1024];
 521            int length;
 522            while ((length = is.read(buffer)) > 0) {
 523                try {
 524                    os.write(buffer, 0, length);
 525                } catch (IOException e) {
 526                    throw new FileWriterException();
 527                }
 528            }
 529            try {
 530                os.flush();
 531            } catch (IOException e) {
 532                throw new FileWriterException();
 533            }
 534        } catch (FileNotFoundException e) {
 535            throw new FileCopyException(R.string.error_file_not_found);
 536        } catch (FileWriterException e) {
 537            throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
 538        } catch (IOException e) {
 539            e.printStackTrace();
 540            throw new FileCopyException(R.string.error_io_exception);
 541        } finally {
 542            close(os);
 543            close(is);
 544        }
 545    }
 546
 547    public void copyFileToPrivateStorage(Message message, Uri uri, String type) throws FileCopyException {
 548        String mime = type != null ? type : MimeUtils.guessMimeTypeFromUri(mXmppConnectionService, uri);
 549        Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage (mime=" + mime + ")");
 550        String extension = MimeUtils.guessExtensionFromMimeType(mime);
 551        if (extension == null) {
 552            Log.d(Config.LOGTAG, "extension from mime type was null");
 553            extension = getExtensionFromUri(uri);
 554        }
 555        if ("ogg".equals(extension) && type != null && type.startsWith("audio/")) {
 556            extension = "oga";
 557        }
 558        message.setRelativeFilePath(message.getUuid() + "." + extension);
 559        copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
 560    }
 561
 562    private String getExtensionFromUri(Uri uri) {
 563        String[] projection = {MediaStore.MediaColumns.DATA};
 564        String filename = null;
 565        Cursor cursor;
 566        try {
 567            cursor = mXmppConnectionService.getContentResolver().query(uri, projection, null, null, null);
 568        } catch (IllegalArgumentException e) {
 569            cursor = null;
 570        }
 571        if (cursor != null) {
 572            try {
 573                if (cursor.moveToFirst()) {
 574                    filename = cursor.getString(0);
 575                }
 576            } catch (Exception e) {
 577                filename = null;
 578            } finally {
 579                cursor.close();
 580            }
 581        }
 582        if (filename == null) {
 583            final List<String> segments = uri.getPathSegments();
 584            if (segments.size() > 0) {
 585                filename = segments.get(segments.size() - 1);
 586            }
 587        }
 588        int pos = filename == null ? -1 : filename.lastIndexOf('.');
 589        return pos > 0 ? filename.substring(pos + 1) : null;
 590    }
 591
 592    private void copyImageToPrivateStorage(File file, Uri image, int sampleSize) throws FileCopyException {
 593        file.getParentFile().mkdirs();
 594        InputStream is = null;
 595        OutputStream os = null;
 596        try {
 597            if (!file.exists() && !file.createNewFile()) {
 598                throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
 599            }
 600            is = mXmppConnectionService.getContentResolver().openInputStream(image);
 601            if (is == null) {
 602                throw new FileCopyException(R.string.error_not_an_image_file);
 603            }
 604            Bitmap originalBitmap;
 605            BitmapFactory.Options options = new BitmapFactory.Options();
 606            int inSampleSize = (int) Math.pow(2, sampleSize);
 607            Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
 608            options.inSampleSize = inSampleSize;
 609            originalBitmap = BitmapFactory.decodeStream(is, null, options);
 610            is.close();
 611            if (originalBitmap == null) {
 612                throw new FileCopyException(R.string.error_not_an_image_file);
 613            }
 614            Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
 615            int rotation = getRotation(image);
 616            scaledBitmap = rotate(scaledBitmap, rotation);
 617            boolean targetSizeReached = false;
 618            int quality = Config.IMAGE_QUALITY;
 619            final int imageMaxSize = mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize);
 620            while (!targetSizeReached) {
 621                os = new FileOutputStream(file);
 622                boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
 623                if (!success) {
 624                    throw new FileCopyException(R.string.error_compressing_image);
 625                }
 626                os.flush();
 627                targetSizeReached = file.length() <= imageMaxSize || quality <= 50;
 628                quality -= 5;
 629            }
 630            scaledBitmap.recycle();
 631        } catch (FileNotFoundException e) {
 632            throw new FileCopyException(R.string.error_file_not_found);
 633        } catch (IOException e) {
 634            e.printStackTrace();
 635            throw new FileCopyException(R.string.error_io_exception);
 636        } catch (SecurityException e) {
 637            throw new FileCopyException(R.string.error_security_exception_during_image_copy);
 638        } catch (OutOfMemoryError e) {
 639            ++sampleSize;
 640            if (sampleSize <= 3) {
 641                copyImageToPrivateStorage(file, image, sampleSize);
 642            } else {
 643                throw new FileCopyException(R.string.error_out_of_memory);
 644            }
 645        } finally {
 646            close(os);
 647            close(is);
 648        }
 649    }
 650
 651    public void copyImageToPrivateStorage(File file, Uri image) throws FileCopyException {
 652        Log.d(Config.LOGTAG, "copy image (" + image.toString() + ") to private storage " + file.getAbsolutePath());
 653        copyImageToPrivateStorage(file, image, 0);
 654    }
 655
 656    public void copyImageToPrivateStorage(Message message, Uri image) throws FileCopyException {
 657        switch (Config.IMAGE_FORMAT) {
 658            case JPEG:
 659                message.setRelativeFilePath(message.getUuid() + ".jpg");
 660                break;
 661            case PNG:
 662                message.setRelativeFilePath(message.getUuid() + ".png");
 663                break;
 664            case WEBP:
 665                message.setRelativeFilePath(message.getUuid() + ".webp");
 666                break;
 667        }
 668        copyImageToPrivateStorage(getFile(message), image);
 669        updateFileParams(message);
 670    }
 671
 672    private int getRotation(File file) {
 673        return getRotation(Uri.parse("file://" + file.getAbsolutePath()));
 674    }
 675
 676    private int getRotation(Uri image) {
 677        InputStream is = null;
 678        try {
 679            is = mXmppConnectionService.getContentResolver().openInputStream(image);
 680            return ExifHelper.getOrientation(is);
 681        } catch (FileNotFoundException e) {
 682            return 0;
 683        } finally {
 684            close(is);
 685        }
 686    }
 687
 688    public Bitmap getThumbnail(Message message, int size, boolean cacheOnly) throws IOException {
 689        final String uuid = message.getUuid();
 690        final LruCache<String, Bitmap> cache = mXmppConnectionService.getBitmapCache();
 691        Bitmap thumbnail = cache.get(uuid);
 692        if ((thumbnail == null) && (!cacheOnly)) {
 693            synchronized (THUMBNAIL_LOCK) {
 694                thumbnail = cache.get(uuid);
 695                if (thumbnail != null) {
 696                    return thumbnail;
 697                }
 698                DownloadableFile file = getFile(message);
 699                final String mime = file.getMimeType();
 700                if (mime.startsWith("video/")) {
 701                    thumbnail = getVideoPreview(file, size);
 702                } else {
 703                    Bitmap fullsize = getFullsizeImagePreview(file, size);
 704                    if (fullsize == null) {
 705                        throw new FileNotFoundException();
 706                    }
 707                    thumbnail = resize(fullsize, size);
 708                    thumbnail = rotate(thumbnail, getRotation(file));
 709                    if (mime.equals("image/gif")) {
 710                        Bitmap withGifOverlay = thumbnail.copy(Bitmap.Config.ARGB_8888, true);
 711                        drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
 712                        thumbnail.recycle();
 713                        thumbnail = withGifOverlay;
 714                    }
 715                }
 716                this.mXmppConnectionService.getBitmapCache().put(uuid, thumbnail);
 717            }
 718        }
 719        return thumbnail;
 720    }
 721
 722    private Bitmap getFullsizeImagePreview(File file, int size) {
 723        BitmapFactory.Options options = new BitmapFactory.Options();
 724        options.inSampleSize = calcSampleSize(file, size);
 725        try {
 726            return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
 727        } catch (OutOfMemoryError e) {
 728            options.inSampleSize *= 2;
 729            return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
 730        }
 731    }
 732
 733    private void drawOverlay(Bitmap bitmap, int resource, float factor) {
 734        Bitmap overlay = BitmapFactory.decodeResource(mXmppConnectionService.getResources(), resource);
 735        Canvas canvas = new Canvas(bitmap);
 736        float targetSize = Math.min(canvas.getWidth(), canvas.getHeight()) * factor;
 737        Log.d(Config.LOGTAG, "target size overlay: " + targetSize + " overlay bitmap size was " + overlay.getHeight());
 738        float left = (canvas.getWidth() - targetSize) / 2.0f;
 739        float top = (canvas.getHeight() - targetSize) / 2.0f;
 740        RectF dst = new RectF(left, top, left + targetSize - 1, top + targetSize - 1);
 741        canvas.drawBitmap(overlay, null, dst, createAntiAliasingPaint());
 742    }
 743
 744    /**
 745     * https://stackoverflow.com/a/3943023/210897
 746     */
 747    private boolean paintOverlayBlack(final Bitmap bitmap) {
 748        final int h = bitmap.getHeight();
 749        final int w = bitmap.getWidth();
 750        int record = 0;
 751        for (int y = Math.round(h * IGNORE_PADDING); y < h - Math.round(h * IGNORE_PADDING); ++y) {
 752            for (int x = Math.round(w * IGNORE_PADDING); x < w - Math.round(w * IGNORE_PADDING); ++x) {
 753                int pixel = bitmap.getPixel(x, y);
 754                if ((Color.red(pixel) * 0.299 + Color.green(pixel) * 0.587 + Color.blue(pixel) * 0.114) > 186) {
 755                    --record;
 756                } else {
 757                    ++record;
 758                }
 759            }
 760        }
 761        return record < 0;
 762    }
 763
 764    private Bitmap cropCenterSquareVideo(Uri uri, int size) {
 765        MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
 766        Bitmap frame;
 767        try {
 768            metadataRetriever.setDataSource(mXmppConnectionService, uri);
 769            frame = metadataRetriever.getFrameAtTime(0);
 770            metadataRetriever.release();
 771            return cropCenterSquare(frame, size);
 772        } catch (Exception e) {
 773            frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
 774            frame.eraseColor(0xff000000);
 775            return frame;
 776        }
 777    }
 778
 779    private Bitmap getVideoPreview(File file, int size) {
 780        MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
 781        Bitmap frame;
 782        try {
 783            metadataRetriever.setDataSource(file.getAbsolutePath());
 784            frame = metadataRetriever.getFrameAtTime(0);
 785            metadataRetriever.release();
 786            frame = resize(frame, size);
 787        } catch (IOException | RuntimeException e) {
 788            frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
 789            frame.eraseColor(0xff000000);
 790        }
 791        drawOverlay(frame, paintOverlayBlack(frame) ? R.drawable.play_video_black : R.drawable.play_video_white, 0.75f);
 792        return frame;
 793    }
 794
 795    public Uri getTakePhotoUri() {
 796        File file;
 797        if (Config.ONLY_INTERNAL_STORAGE) {
 798            file = new File(mXmppConnectionService.getCacheDir().getAbsolutePath(), "Camera/IMG_" + this.IMAGE_DATE_FORMAT.format(new Date()) + ".jpg");
 799        } else {
 800            file = new File(getTakePhotoPath() + "IMG_" + this.IMAGE_DATE_FORMAT.format(new Date()) + ".jpg");
 801        }
 802        file.getParentFile().mkdirs();
 803        return getUriForFile(mXmppConnectionService, file);
 804    }
 805
 806    public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
 807
 808        final Avatar uncompressAvatar = getUncompressedAvatar(image);
 809        if (uncompressAvatar != null && uncompressAvatar.image.length() <= Config.AVATAR_CHAR_LIMIT) {
 810            return uncompressAvatar;
 811        }
 812        if (uncompressAvatar != null) {
 813            Log.d(Config.LOGTAG, "uncompressed avatar exceeded char limit by " + (uncompressAvatar.image.length() - Config.AVATAR_CHAR_LIMIT));
 814        }
 815
 816        Bitmap bm = cropCenterSquare(image, size);
 817        if (bm == null) {
 818            return null;
 819        }
 820        if (hasAlpha(bm)) {
 821            Log.d(Config.LOGTAG, "alpha in avatar detected; uploading as PNG");
 822            bm.recycle();
 823            bm = cropCenterSquare(image, 96);
 824            return getPepAvatar(bm, Bitmap.CompressFormat.PNG, 100);
 825        }
 826        return getPepAvatar(bm, format, 100);
 827    }
 828
 829    private Avatar getUncompressedAvatar(Uri uri) {
 830        Bitmap bitmap = null;
 831        try {
 832            bitmap = BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
 833            return getPepAvatar(bitmap, Bitmap.CompressFormat.PNG, 100);
 834        } catch (Exception e) {
 835            return null;
 836        } finally {
 837            if (bitmap != null) {
 838                bitmap.recycle();
 839            }
 840        }
 841    }
 842
 843    private Avatar getPepAvatar(Bitmap bitmap, Bitmap.CompressFormat format, int quality) {
 844        try {
 845            ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
 846            Base64OutputStream mBase64OutputStream = new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
 847            MessageDigest digest = MessageDigest.getInstance("SHA-1");
 848            DigestOutputStream mDigestOutputStream = new DigestOutputStream(mBase64OutputStream, digest);
 849            if (!bitmap.compress(format, quality, mDigestOutputStream)) {
 850                return null;
 851            }
 852            mDigestOutputStream.flush();
 853            mDigestOutputStream.close();
 854            long chars = mByteArrayOutputStream.size();
 855            if (format != Bitmap.CompressFormat.PNG && quality >= 50 && chars >= Config.AVATAR_CHAR_LIMIT) {
 856                int q = quality - 2;
 857                Log.d(Config.LOGTAG, "avatar char length was " + chars + " reducing quality to " + q);
 858                return getPepAvatar(bitmap, format, q);
 859            }
 860            Log.d(Config.LOGTAG, "settled on char length " + chars + " with quality=" + quality);
 861            final Avatar avatar = new Avatar();
 862            avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
 863            avatar.image = new String(mByteArrayOutputStream.toByteArray());
 864            if (format.equals(Bitmap.CompressFormat.WEBP)) {
 865                avatar.type = "image/webp";
 866            } else if (format.equals(Bitmap.CompressFormat.JPEG)) {
 867                avatar.type = "image/jpeg";
 868            } else if (format.equals(Bitmap.CompressFormat.PNG)) {
 869                avatar.type = "image/png";
 870            }
 871            avatar.width = bitmap.getWidth();
 872            avatar.height = bitmap.getHeight();
 873            return avatar;
 874        } catch (OutOfMemoryError e) {
 875            Log.d(Config.LOGTAG,"unable to convert avatar to base64 due to low memory");
 876            return null;
 877        } catch (Exception e) {
 878            return null;
 879        }
 880    }
 881
 882    public Avatar getStoredPepAvatar(String hash) {
 883        if (hash == null) {
 884            return null;
 885        }
 886        Avatar avatar = new Avatar();
 887        File file = new File(getAvatarPath(hash));
 888        FileInputStream is = null;
 889        try {
 890            avatar.size = file.length();
 891            BitmapFactory.Options options = new BitmapFactory.Options();
 892            options.inJustDecodeBounds = true;
 893            BitmapFactory.decodeFile(file.getAbsolutePath(), options);
 894            is = new FileInputStream(file);
 895            ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
 896            Base64OutputStream mBase64OutputStream = new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
 897            MessageDigest digest = MessageDigest.getInstance("SHA-1");
 898            DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
 899            byte[] buffer = new byte[4096];
 900            int length;
 901            while ((length = is.read(buffer)) > 0) {
 902                os.write(buffer, 0, length);
 903            }
 904            os.flush();
 905            os.close();
 906            avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
 907            avatar.image = new String(mByteArrayOutputStream.toByteArray());
 908            avatar.height = options.outHeight;
 909            avatar.width = options.outWidth;
 910            avatar.type = options.outMimeType;
 911            return avatar;
 912        } catch (NoSuchAlgorithmException | IOException e) {
 913            return null;
 914        } finally {
 915            close(is);
 916        }
 917    }
 918
 919    public boolean isAvatarCached(Avatar avatar) {
 920        File file = new File(getAvatarPath(avatar.getFilename()));
 921        return file.exists();
 922    }
 923
 924    public boolean save(final Avatar avatar) {
 925        File file;
 926        if (isAvatarCached(avatar)) {
 927            file = new File(getAvatarPath(avatar.getFilename()));
 928            avatar.size = file.length();
 929        } else {
 930            file = new File(mXmppConnectionService.getCacheDir().getAbsolutePath() + "/" + UUID.randomUUID().toString());
 931            if (file.getParentFile().mkdirs()) {
 932                Log.d(Config.LOGTAG, "created cache directory");
 933            }
 934            OutputStream os = null;
 935            try {
 936                if (!file.createNewFile()) {
 937                    Log.d(Config.LOGTAG, "unable to create temporary file " + file.getAbsolutePath());
 938                }
 939                os = new FileOutputStream(file);
 940                MessageDigest digest = MessageDigest.getInstance("SHA-1");
 941                digest.reset();
 942                DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
 943                final byte[] bytes = avatar.getImageAsBytes();
 944                mDigestOutputStream.write(bytes);
 945                mDigestOutputStream.flush();
 946                mDigestOutputStream.close();
 947                String sha1sum = CryptoHelper.bytesToHex(digest.digest());
 948                if (sha1sum.equals(avatar.sha1sum)) {
 949                    File outputFile = new File(getAvatarPath(avatar.getFilename()));
 950                    if (outputFile.getParentFile().mkdirs()) {
 951                        Log.d(Config.LOGTAG, "created avatar directory");
 952                    }
 953                    String filename = getAvatarPath(avatar.getFilename());
 954                    if (!file.renameTo(new File(filename))) {
 955                        Log.d(Config.LOGTAG, "unable to rename " + file.getAbsolutePath() + " to " + outputFile);
 956                        return false;
 957                    }
 958                } else {
 959                    Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
 960                    if (!file.delete()) {
 961                        Log.d(Config.LOGTAG, "unable to delete temporary file");
 962                    }
 963                    return false;
 964                }
 965                avatar.size = bytes.length;
 966            } catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
 967                return false;
 968            } finally {
 969                close(os);
 970            }
 971        }
 972        return true;
 973    }
 974
 975    private String getAvatarPath(String avatar) {
 976        return mXmppConnectionService.getFilesDir().getAbsolutePath() + "/avatars/" + avatar;
 977    }
 978
 979    public Uri getAvatarUri(String avatar) {
 980        return Uri.parse("file:" + getAvatarPath(avatar));
 981    }
 982
 983    public Bitmap cropCenterSquare(Uri image, int size) {
 984        if (image == null) {
 985            return null;
 986        }
 987        InputStream is = null;
 988        try {
 989            BitmapFactory.Options options = new BitmapFactory.Options();
 990            options.inSampleSize = calcSampleSize(image, size);
 991            is = mXmppConnectionService.getContentResolver().openInputStream(image);
 992            if (is == null) {
 993                return null;
 994            }
 995            Bitmap input = BitmapFactory.decodeStream(is, null, options);
 996            if (input == null) {
 997                return null;
 998            } else {
 999                input = rotate(input, getRotation(image));
1000                return cropCenterSquare(input, size);
1001            }
1002        } catch (FileNotFoundException | SecurityException e) {
1003            return null;
1004        } finally {
1005            close(is);
1006        }
1007    }
1008
1009    public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
1010        if (image == null) {
1011            return null;
1012        }
1013        InputStream is = null;
1014        try {
1015            BitmapFactory.Options options = new BitmapFactory.Options();
1016            options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
1017            is = mXmppConnectionService.getContentResolver().openInputStream(image);
1018            if (is == null) {
1019                return null;
1020            }
1021            Bitmap source = BitmapFactory.decodeStream(is, null, options);
1022            if (source == null) {
1023                return null;
1024            }
1025            int sourceWidth = source.getWidth();
1026            int sourceHeight = source.getHeight();
1027            float xScale = (float) newWidth / sourceWidth;
1028            float yScale = (float) newHeight / sourceHeight;
1029            float scale = Math.max(xScale, yScale);
1030            float scaledWidth = scale * sourceWidth;
1031            float scaledHeight = scale * sourceHeight;
1032            float left = (newWidth - scaledWidth) / 2;
1033            float top = (newHeight - scaledHeight) / 2;
1034
1035            RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
1036            Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
1037            Canvas canvas = new Canvas(dest);
1038            canvas.drawBitmap(source, null, targetRect, createAntiAliasingPaint());
1039            if (source.isRecycled()) {
1040                source.recycle();
1041            }
1042            return dest;
1043        } catch (SecurityException e) {
1044            return null; //android 6.0 with revoked permissions for example
1045        } catch (FileNotFoundException e) {
1046            return null;
1047        } finally {
1048            close(is);
1049        }
1050    }
1051
1052    public Bitmap cropCenterSquare(Bitmap input, int size) {
1053        int w = input.getWidth();
1054        int h = input.getHeight();
1055
1056        float scale = Math.max((float) size / h, (float) size / w);
1057
1058        float outWidth = scale * w;
1059        float outHeight = scale * h;
1060        float left = (size - outWidth) / 2;
1061        float top = (size - outHeight) / 2;
1062        RectF target = new RectF(left, top, left + outWidth, top + outHeight);
1063
1064        Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1065        Canvas canvas = new Canvas(output);
1066        canvas.drawBitmap(input, null, target, createAntiAliasingPaint());
1067        if (!input.isRecycled()) {
1068            input.recycle();
1069        }
1070        return output;
1071    }
1072
1073    private int calcSampleSize(Uri image, int size) throws FileNotFoundException, SecurityException {
1074        BitmapFactory.Options options = new BitmapFactory.Options();
1075        options.inJustDecodeBounds = true;
1076        BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(image), null, options);
1077        return calcSampleSize(options, size);
1078    }
1079
1080    public void updateFileParams(Message message) {
1081        updateFileParams(message, null);
1082    }
1083
1084    public void updateFileParams(Message message, URL url) {
1085        DownloadableFile file = getFile(message);
1086        final String mime = file.getMimeType();
1087        boolean image = message.getType() == Message.TYPE_IMAGE || (mime != null && mime.startsWith("image/"));
1088        boolean video = mime != null && mime.startsWith("video/");
1089        boolean audio = mime != null && mime.startsWith("audio/");
1090        final StringBuilder body = new StringBuilder();
1091        if (url != null) {
1092            body.append(url.toString());
1093        }
1094        body.append('|').append(file.getSize());
1095        if (image || video) {
1096            try {
1097                Dimensions dimensions = image ? getImageDimensions(file) : getVideoDimensions(file);
1098                if (dimensions.valid()) {
1099                    body.append('|').append(dimensions.width).append('|').append(dimensions.height);
1100                }
1101            } catch (NotAVideoFile notAVideoFile) {
1102                Log.d(Config.LOGTAG, "file with mime type " + file.getMimeType() + " was not a video file");
1103                //fall threw
1104            }
1105        } else if (audio) {
1106            body.append("|0|0|").append(getMediaRuntime(file));
1107        }
1108        message.setBody(body.toString());
1109    }
1110
1111    public int getMediaRuntime(Uri uri) {
1112        try {
1113            MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
1114            mediaMetadataRetriever.setDataSource(mXmppConnectionService, uri);
1115            return Integer.parseInt(mediaMetadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION));
1116        } catch (RuntimeException e) {
1117            return 0;
1118        }
1119    }
1120
1121    private int getMediaRuntime(File file) {
1122        try {
1123            MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
1124            mediaMetadataRetriever.setDataSource(file.toString());
1125            return Integer.parseInt(mediaMetadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION));
1126        } catch (RuntimeException e) {
1127            return 0;
1128        }
1129    }
1130
1131    private Dimensions getImageDimensions(File file) {
1132        BitmapFactory.Options options = new BitmapFactory.Options();
1133        options.inJustDecodeBounds = true;
1134        BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1135        int rotation = getRotation(file);
1136        boolean rotated = rotation == 90 || rotation == 270;
1137        int imageHeight = rotated ? options.outWidth : options.outHeight;
1138        int imageWidth = rotated ? options.outHeight : options.outWidth;
1139        return new Dimensions(imageHeight, imageWidth);
1140    }
1141
1142    private Dimensions getVideoDimensions(File file) throws NotAVideoFile {
1143        MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1144        try {
1145            metadataRetriever.setDataSource(file.getAbsolutePath());
1146        } catch (RuntimeException e) {
1147            throw new NotAVideoFile(e);
1148        }
1149        return getVideoDimensions(metadataRetriever);
1150    }
1151
1152    public Bitmap getAvatar(String avatar, int size) {
1153        if (avatar == null) {
1154            return null;
1155        }
1156        Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
1157        if (bm == null) {
1158            return null;
1159        }
1160        return bm;
1161    }
1162
1163    public boolean isFileAvailable(Message message) {
1164        return getFile(message).exists();
1165    }
1166
1167    private static class Dimensions {
1168        public final int width;
1169        public final int height;
1170
1171        Dimensions(int height, int width) {
1172            this.width = width;
1173            this.height = height;
1174        }
1175
1176        public int getMin() {
1177            return Math.min(width, height);
1178        }
1179
1180        public boolean valid() {
1181            return width > 0 && height > 0;
1182        }
1183    }
1184
1185    private static class NotAVideoFile extends Exception {
1186        public NotAVideoFile(Throwable t) {
1187            super(t);
1188        }
1189
1190        public NotAVideoFile() {
1191            super();
1192        }
1193    }
1194
1195    public class FileCopyException extends Exception {
1196        private static final long serialVersionUID = -1010013599132881427L;
1197        private int resId;
1198
1199        public FileCopyException(int resId) {
1200            this.resId = resId;
1201        }
1202
1203        public int getResId() {
1204            return resId;
1205        }
1206    }
1207}