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.media.MediaScannerConnection;
  17import android.net.Uri;
  18import android.os.Build;
  19import android.os.Environment;
  20import android.os.ParcelFileDescriptor;
  21import android.provider.MediaStore;
  22import android.provider.OpenableColumns;
  23import android.support.annotation.RequiresApi;
  24import android.support.v4.content.FileProvider;
  25import android.system.Os;
  26import android.system.StructStat;
  27import android.util.Base64;
  28import android.util.Base64OutputStream;
  29import android.util.Log;
  30import android.util.LruCache;
  31
  32import java.io.ByteArrayOutputStream;
  33import java.io.Closeable;
  34import java.io.File;
  35import java.io.FileDescriptor;
  36import java.io.FileInputStream;
  37import java.io.FileNotFoundException;
  38import java.io.FileOutputStream;
  39import java.io.IOException;
  40import java.io.InputStream;
  41import java.io.OutputStream;
  42import java.net.Socket;
  43import java.net.URL;
  44import java.security.DigestOutputStream;
  45import java.security.MessageDigest;
  46import java.security.NoSuchAlgorithmException;
  47import java.text.SimpleDateFormat;
  48import java.util.ArrayList;
  49import java.util.Date;
  50import java.util.List;
  51import java.util.Locale;
  52import java.util.UUID;
  53
  54import eu.siacs.conversations.Config;
  55import eu.siacs.conversations.R;
  56import eu.siacs.conversations.entities.DownloadableFile;
  57import eu.siacs.conversations.entities.Message;
  58import eu.siacs.conversations.services.XmppConnectionService;
  59import eu.siacs.conversations.ui.RecordingActivity;
  60import eu.siacs.conversations.ui.util.Attachment;
  61import eu.siacs.conversations.utils.CryptoHelper;
  62import eu.siacs.conversations.utils.ExifHelper;
  63import eu.siacs.conversations.utils.FileUtils;
  64import eu.siacs.conversations.utils.FileWriterException;
  65import eu.siacs.conversations.utils.MimeUtils;
  66import eu.siacs.conversations.xmpp.pep.Avatar;
  67
  68public class FileBackend {
  69
  70    private static final Object THUMBNAIL_LOCK = new Object();
  71
  72    private static final SimpleDateFormat IMAGE_DATE_FORMAT = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US);
  73
  74    private static final String FILE_PROVIDER = ".files";
  75
  76    private XmppConnectionService mXmppConnectionService;
  77
  78    private static final float IGNORE_PADDING = 0.15f;
  79
  80    public FileBackend(XmppConnectionService service) {
  81        this.mXmppConnectionService = service;
  82    }
  83
  84    private static boolean isInDirectoryThatShouldNotBeScanned(Context context, File file) {
  85        return isInDirectoryThatShouldNotBeScanned(context, file.getAbsolutePath());
  86    }
  87
  88    public static boolean isInDirectoryThatShouldNotBeScanned(Context context, String path) {
  89        for (String type : new String[]{RecordingActivity.STORAGE_DIRECTORY_TYPE_NAME, "Files"}) {
  90            if (path.startsWith(getConversationsDirectory(context, type))) {
  91                return true;
  92            }
  93        }
  94        return false;
  95    }
  96
  97    public static long getFileSize(Context context, Uri uri) {
  98        try {
  99            final Cursor cursor = context.getContentResolver().query(uri, null, null, null, null);
 100            if (cursor != null && cursor.moveToFirst()) {
 101                long size = cursor.getLong(cursor.getColumnIndex(OpenableColumns.SIZE));
 102                cursor.close();
 103                return size;
 104            } else {
 105                return -1;
 106            }
 107        } catch (Exception e) {
 108            return -1;
 109        }
 110    }
 111
 112    public static boolean allFilesUnderSize(Context context, List<Attachment> attachments, long max) {
 113        if (max <= 0) {
 114            Log.d(Config.LOGTAG, "server did not report max file size for http upload");
 115            return true; //exception to be compatible with HTTP Upload < v0.2
 116        }
 117        for (Attachment attachment : attachments) {
 118            if (attachment.getType() != Attachment.Type.FILE) {
 119                continue;
 120            }
 121            String mime = attachment.getMime();
 122            if (mime != null && mime.startsWith("video/")) {
 123                try {
 124                    Dimensions dimensions = FileBackend.getVideoDimensions(context, attachment.getUri());
 125                    if (dimensions.getMin() > 720) {
 126                        Log.d(Config.LOGTAG, "do not consider video file with min width larger than 720 for size check");
 127                        continue;
 128                    }
 129                } catch (NotAVideoFile notAVideoFile) {
 130                    //ignore and fall through
 131                }
 132            }
 133            if (FileBackend.getFileSize(context, attachment.getUri()) > max) {
 134                Log.d(Config.LOGTAG, "not all files are under " + max + " bytes. suggesting falling back to jingle");
 135                return false;
 136            }
 137        }
 138        return true;
 139    }
 140
 141    public static String getConversationsDirectory(Context context, final String type) {
 142        if (Config.ONLY_INTERNAL_STORAGE) {
 143            return context.getFilesDir().getAbsolutePath() + "/" + type + "/";
 144        } else {
 145            return getAppMediaDirectory(context) + context.getString(R.string.app_name) + " " + type + "/";
 146        }
 147    }
 148
 149    public static String getAppMediaDirectory(Context context) {
 150        return Environment.getExternalStorageDirectory().getAbsolutePath() + "/" + context.getString(R.string.app_name) + "/Media/";
 151    }
 152
 153    public static String getConversationsLogsDirectory() {
 154        return Environment.getExternalStorageDirectory().getAbsolutePath() + "/Conversations/";
 155    }
 156
 157    private static Bitmap rotate(Bitmap bitmap, int degree) {
 158        if (degree == 0) {
 159            return bitmap;
 160        }
 161        int w = bitmap.getWidth();
 162        int h = bitmap.getHeight();
 163        Matrix mtx = new Matrix();
 164        mtx.postRotate(degree);
 165        Bitmap result = Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true);
 166        if (bitmap != null && !bitmap.isRecycled()) {
 167            bitmap.recycle();
 168        }
 169        return result;
 170    }
 171
 172    public static boolean isPathBlacklisted(String path) {
 173        final String androidDataPath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Android/data/";
 174        return path.startsWith(androidDataPath);
 175    }
 176
 177    private static Paint createAntiAliasingPaint() {
 178        Paint paint = new Paint();
 179        paint.setAntiAlias(true);
 180        paint.setFilterBitmap(true);
 181        paint.setDither(true);
 182        return paint;
 183    }
 184
 185    private static String getTakePhotoPath() {
 186        return Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM) + "/Camera/";
 187    }
 188
 189    public static Uri getUriForFile(Context context, File file) {
 190        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N || Config.ONLY_INTERNAL_STORAGE) {
 191            try {
 192                return FileProvider.getUriForFile(context, getAuthority(context), file);
 193            } catch (IllegalArgumentException e) {
 194                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 195                    throw new SecurityException(e);
 196                } else {
 197                    return Uri.fromFile(file);
 198                }
 199            }
 200        } else {
 201            return Uri.fromFile(file);
 202        }
 203    }
 204
 205    public static String getAuthority(Context context) {
 206        return context.getPackageName() + FILE_PROVIDER;
 207    }
 208
 209    private static boolean hasAlpha(final Bitmap bitmap) {
 210        for (int x = 0; x < bitmap.getWidth(); ++x) {
 211            for (int y = 0; y < bitmap.getWidth(); ++y) {
 212                if (Color.alpha(bitmap.getPixel(x, y)) < 255) {
 213                    return true;
 214                }
 215            }
 216        }
 217        return false;
 218    }
 219
 220    private static int calcSampleSize(File image, int size) {
 221        BitmapFactory.Options options = new BitmapFactory.Options();
 222        options.inJustDecodeBounds = true;
 223        BitmapFactory.decodeFile(image.getAbsolutePath(), options);
 224        return calcSampleSize(options, size);
 225    }
 226
 227
 228    private static int calcSampleSize(BitmapFactory.Options options, int size) {
 229        int height = options.outHeight;
 230        int width = options.outWidth;
 231        int inSampleSize = 1;
 232
 233        if (height > size || width > size) {
 234            int halfHeight = height / 2;
 235            int halfWidth = width / 2;
 236
 237            while ((halfHeight / inSampleSize) > size
 238                    && (halfWidth / inSampleSize) > size) {
 239                inSampleSize *= 2;
 240            }
 241        }
 242        return inSampleSize;
 243    }
 244
 245    public Bitmap getPreviewForUri(Attachment attachment, int size, boolean cacheOnly) {
 246        final String key = "attachment_"+attachment.getUuid().toString()+"_"+String.valueOf(size);
 247        final LruCache<String, Bitmap> cache = mXmppConnectionService.getBitmapCache();
 248        Bitmap bitmap = cache.get(key);
 249        if (bitmap != null || cacheOnly) {
 250            return bitmap;
 251        }
 252        if (attachment.getMime() != null && attachment.getMime().startsWith("video/")) {
 253            bitmap = cropCenterSquareVideo(attachment.getUri(), size);
 254            drawOverlay(bitmap, paintOverlayBlack(bitmap) ? R.drawable.play_video_black : R.drawable.play_video_white, 0.75f);
 255        } else {
 256            bitmap = cropCenterSquare(attachment.getUri(), size);
 257            if (bitmap != null && "image/gif".equals(attachment.getMime())) {
 258                Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
 259                drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
 260                bitmap.recycle();
 261                bitmap = withGifOverlay;
 262            }
 263        }
 264        if (bitmap != null) {
 265            cache.put(key, bitmap);
 266        }
 267        return bitmap;
 268    }
 269
 270    private static Dimensions getVideoDimensions(Context context, Uri uri) throws NotAVideoFile {
 271        MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
 272        try {
 273            mediaMetadataRetriever.setDataSource(context, uri);
 274        } catch (RuntimeException e) {
 275            throw new NotAVideoFile(e);
 276        }
 277        return getVideoDimensions(mediaMetadataRetriever);
 278    }
 279
 280    private static Dimensions getVideoDimensionsOfFrame(MediaMetadataRetriever mediaMetadataRetriever) {
 281        Bitmap bitmap = null;
 282        try {
 283            bitmap = mediaMetadataRetriever.getFrameAtTime();
 284            return new Dimensions(bitmap.getHeight(), bitmap.getWidth());
 285        } catch (Exception e) {
 286            return null;
 287        } finally {
 288            if (bitmap != null) {
 289                bitmap.recycle();
 290                ;
 291            }
 292        }
 293    }
 294
 295    private static Dimensions getVideoDimensions(MediaMetadataRetriever metadataRetriever) throws NotAVideoFile {
 296        String hasVideo = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_HAS_VIDEO);
 297        if (hasVideo == null) {
 298            throw new NotAVideoFile();
 299        }
 300        Dimensions dimensions = getVideoDimensionsOfFrame(metadataRetriever);
 301        if (dimensions != null) {
 302            return dimensions;
 303        }
 304        final int rotation;
 305        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN_MR1) {
 306            rotation = extractRotationFromMediaRetriever(metadataRetriever);
 307        } else {
 308            rotation = 0;
 309        }
 310        boolean rotated = rotation == 90 || rotation == 270;
 311        int height;
 312        try {
 313            String h = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT);
 314            height = Integer.parseInt(h);
 315        } catch (Exception e) {
 316            height = -1;
 317        }
 318        int width;
 319        try {
 320            String w = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH);
 321            width = Integer.parseInt(w);
 322        } catch (Exception e) {
 323            width = -1;
 324        }
 325        metadataRetriever.release();
 326        Log.d(Config.LOGTAG, "extracted video dims " + width + "x" + height);
 327        return rotated ? new Dimensions(width, height) : new Dimensions(height, width);
 328    }
 329
 330    @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR1)
 331    private static int extractRotationFromMediaRetriever(MediaMetadataRetriever metadataRetriever) {
 332        String r = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION);
 333        try {
 334            return Integer.parseInt(r);
 335        } catch (Exception e) {
 336            return 0;
 337        }
 338    }
 339
 340    public static void close(Closeable stream) {
 341        if (stream != null) {
 342            try {
 343                stream.close();
 344            } catch (IOException e) {
 345            }
 346        }
 347    }
 348
 349    public static void close(Socket socket) {
 350        if (socket != null) {
 351            try {
 352                socket.close();
 353            } catch (IOException e) {
 354            }
 355        }
 356    }
 357
 358    public static boolean weOwnFile(Context context, Uri uri) {
 359        if (uri == null || !ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
 360            return false;
 361        } else if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
 362            return fileIsInFilesDir(context, uri);
 363        } else {
 364            return weOwnFileLollipop(uri);
 365        }
 366    }
 367
 368    /**
 369     * This is more than hacky but probably way better than doing nothing
 370     * Further 'optimizations' might contain to get the parents of CacheDir and NoBackupDir
 371     * and check against those as well
 372     */
 373    private static boolean fileIsInFilesDir(Context context, Uri uri) {
 374        try {
 375            final String haystack = context.getFilesDir().getParentFile().getCanonicalPath();
 376            final String needle = new File(uri.getPath()).getCanonicalPath();
 377            return needle.startsWith(haystack);
 378        } catch (IOException e) {
 379            return false;
 380        }
 381    }
 382
 383    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
 384    private static boolean weOwnFileLollipop(Uri uri) {
 385        try {
 386            File file = new File(uri.getPath());
 387            FileDescriptor fd = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY).getFileDescriptor();
 388            StructStat st = Os.fstat(fd);
 389            return st.st_uid == android.os.Process.myUid();
 390        } catch (FileNotFoundException e) {
 391            return false;
 392        } catch (Exception e) {
 393            return true;
 394        }
 395    }
 396
 397    private void createNoMedia(File diretory) {
 398        final File noMedia = new File(diretory, ".nomedia");
 399        if (!noMedia.exists()) {
 400            try {
 401                if (!noMedia.createNewFile()) {
 402                    Log.d(Config.LOGTAG, "created nomedia file " + noMedia.getAbsolutePath());
 403                }
 404            } catch (Exception e) {
 405                Log.d(Config.LOGTAG, "could not create nomedia file");
 406            }
 407        }
 408    }
 409
 410    public static Uri getMediaUri(Context context, File file) {
 411        final String filePath = file.getAbsolutePath();
 412        final Cursor cursor = context.getContentResolver().query(
 413                MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
 414                new String[] { MediaStore.Images.Media._ID },
 415                MediaStore.Images.Media.DATA + "=? ",
 416                new String[] { filePath }, null);
 417        if (cursor != null && cursor.moveToFirst()) {
 418            final int id = cursor.getInt(cursor.getColumnIndex(MediaStore.MediaColumns._ID));
 419            cursor.close();
 420            return Uri.withAppendedPath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, String.valueOf(id));
 421        } else {
 422            return null;
 423        }
 424    }
 425
 426    public void updateMediaScanner(File file) {
 427        updateMediaScanner(file, null);
 428    }
 429
 430    public void updateMediaScanner(File file, final Runnable callback) {
 431        if (!isInDirectoryThatShouldNotBeScanned(mXmppConnectionService, file)) {
 432            MediaScannerConnection.scanFile(mXmppConnectionService, new String[]{file.getAbsolutePath()}, null, new MediaScannerConnection.MediaScannerConnectionClient() {
 433                @Override
 434                public void onMediaScannerConnected() {
 435
 436                }
 437
 438                @Override
 439                public void onScanCompleted(String path, Uri uri) {
 440                    if (callback != null && file.getAbsolutePath().equals(path)) {
 441                        callback.run();
 442                    } else {
 443                        Log.d(Config.LOGTAG,"media scanner scanned wrong file");
 444                        if (callback != null) {
 445                            callback.run();
 446                        }
 447                    }
 448                }
 449            });
 450            return;
 451            /*Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
 452            intent.setData(Uri.fromFile(file));
 453            mXmppConnectionService.sendBroadcast(intent);*/
 454        } else if (file.getAbsolutePath().startsWith(getAppMediaDirectory(mXmppConnectionService))) {
 455            createNoMedia(file.getParentFile());
 456        }
 457        if (callback != null) {
 458            callback.run();
 459        }
 460    }
 461
 462    public boolean deleteFile(Message message) {
 463        File file = getFile(message);
 464        if (file.delete()) {
 465            updateMediaScanner(file);
 466            return true;
 467        } else {
 468            return false;
 469        }
 470    }
 471
 472    public DownloadableFile getFile(Message message) {
 473        return getFile(message, true);
 474    }
 475
 476    public DownloadableFile getFileForPath(String path, String mime) {
 477        final DownloadableFile file;
 478        if (path.startsWith("/")) {
 479            file = new DownloadableFile(path);
 480        } else {
 481            if (mime != null && mime.startsWith("image/")) {
 482                file = new DownloadableFile(getConversationsDirectory("Images") + path);
 483            } else if (mime != null && mime.startsWith("video/")) {
 484                file = new DownloadableFile(getConversationsDirectory("Videos") + path);
 485            } else {
 486                file = new DownloadableFile(getConversationsDirectory("Files") + path);
 487            }
 488        }
 489        return file;
 490    }
 491
 492    public DownloadableFile getFile(Message message, boolean decrypted) {
 493        final boolean encrypted = !decrypted
 494                && (message.getEncryption() == Message.ENCRYPTION_PGP
 495                || message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
 496        String path = message.getRelativeFilePath();
 497        if (path == null) {
 498            path = message.getUuid();
 499        }
 500        final DownloadableFile file = getFileForPath(path, message.getMimeType());
 501        if (encrypted) {
 502            return new DownloadableFile(getConversationsDirectory("Files") + file.getName() + ".pgp");
 503        } else {
 504            return file;
 505        }
 506    }
 507
 508    public List<Attachment> convertToAttachments(List<DatabaseBackend.FilePath> relativeFilePaths) {
 509        List<Attachment> attachments = new ArrayList<>();
 510        for(DatabaseBackend.FilePath relativeFilePath : relativeFilePaths) {
 511            final String mime = MimeUtils.guessMimeTypeFromExtension(MimeUtils.extractRelevantExtension(relativeFilePath.path));
 512            Log.d(Config.LOGTAG,"mime="+mime);
 513            File file = getFileForPath(relativeFilePath.path, mime);
 514            if (file.exists()) {
 515                attachments.add(Attachment.of(relativeFilePath.uuid, file,mime));
 516            } else {
 517                Log.d(Config.LOGTAG,"file "+file.getAbsolutePath()+" doesnt exist");
 518            }
 519        }
 520        return attachments;
 521    }
 522
 523    private String getConversationsDirectory(final String type) {
 524        return getConversationsDirectory(mXmppConnectionService, type);
 525    }
 526
 527    private Bitmap resize(final Bitmap originalBitmap, int size) throws IOException {
 528        int w = originalBitmap.getWidth();
 529        int h = originalBitmap.getHeight();
 530        if (w <= 0 || h <= 0) {
 531            throw new IOException("Decoded bitmap reported bounds smaller 0");
 532        } else if (Math.max(w, h) > size) {
 533            int scalledW;
 534            int scalledH;
 535            if (w <= h) {
 536                scalledW = Math.max((int) (w / ((double) h / size)), 1);
 537                scalledH = size;
 538            } else {
 539                scalledW = size;
 540                scalledH = Math.max((int) (h / ((double) w / size)), 1);
 541            }
 542            final Bitmap result = Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true);
 543            if (!originalBitmap.isRecycled()) {
 544                originalBitmap.recycle();
 545            }
 546            return result;
 547        } else {
 548            return originalBitmap;
 549        }
 550    }
 551
 552    public boolean useImageAsIs(Uri uri) {
 553        String path = getOriginalPath(uri);
 554        if (path == null || isPathBlacklisted(path)) {
 555            return false;
 556        }
 557        File file = new File(path);
 558        long size = file.length();
 559        if (size == 0 || size >= mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize)) {
 560            return false;
 561        }
 562        BitmapFactory.Options options = new BitmapFactory.Options();
 563        options.inJustDecodeBounds = true;
 564        try {
 565            BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(uri), null, options);
 566            if (options.outMimeType == null || options.outHeight <= 0 || options.outWidth <= 0) {
 567                return false;
 568            }
 569            return (options.outWidth <= Config.IMAGE_SIZE && options.outHeight <= Config.IMAGE_SIZE && options.outMimeType.contains(Config.IMAGE_FORMAT.name().toLowerCase()));
 570        } catch (FileNotFoundException e) {
 571            return false;
 572        }
 573    }
 574
 575    public String getOriginalPath(Uri uri) {
 576        return FileUtils.getPath(mXmppConnectionService, uri);
 577    }
 578
 579    private void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
 580        Log.d(Config.LOGTAG, "copy file (" + uri.toString() + ") to private storage " + file.getAbsolutePath());
 581        file.getParentFile().mkdirs();
 582        OutputStream os = null;
 583        InputStream is = null;
 584        try {
 585            file.createNewFile();
 586            os = new FileOutputStream(file);
 587            is = mXmppConnectionService.getContentResolver().openInputStream(uri);
 588            byte[] buffer = new byte[1024];
 589            int length;
 590            while ((length = is.read(buffer)) > 0) {
 591                try {
 592                    os.write(buffer, 0, length);
 593                } catch (IOException e) {
 594                    throw new FileWriterException();
 595                }
 596            }
 597            try {
 598                os.flush();
 599            } catch (IOException e) {
 600                throw new FileWriterException();
 601            }
 602        } catch (FileNotFoundException e) {
 603            throw new FileCopyException(R.string.error_file_not_found);
 604        } catch (FileWriterException e) {
 605            throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
 606        } catch (IOException e) {
 607            e.printStackTrace();
 608            throw new FileCopyException(R.string.error_io_exception);
 609        } finally {
 610            close(os);
 611            close(is);
 612        }
 613    }
 614
 615    public void copyFileToPrivateStorage(Message message, Uri uri, String type) throws FileCopyException {
 616        String mime = MimeUtils.guessMimeTypeFromUriAndMime(mXmppConnectionService, uri, type);
 617        Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage (mime=" + mime + ")");
 618        String extension = MimeUtils.guessExtensionFromMimeType(mime);
 619        if (extension == null) {
 620            Log.d(Config.LOGTAG, "extension from mime type was null");
 621            extension = getExtensionFromUri(uri);
 622        }
 623        if ("ogg".equals(extension) && type != null && type.startsWith("audio/")) {
 624            extension = "oga";
 625        }
 626        message.setRelativeFilePath(message.getUuid() + "." + extension);
 627        copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
 628    }
 629
 630    private String getExtensionFromUri(Uri uri) {
 631        String[] projection = {MediaStore.MediaColumns.DATA};
 632        String filename = null;
 633        Cursor cursor;
 634        try {
 635            cursor = mXmppConnectionService.getContentResolver().query(uri, projection, null, null, null);
 636        } catch (IllegalArgumentException e) {
 637            cursor = null;
 638        }
 639        if (cursor != null) {
 640            try {
 641                if (cursor.moveToFirst()) {
 642                    filename = cursor.getString(0);
 643                }
 644            } catch (Exception e) {
 645                filename = null;
 646            } finally {
 647                cursor.close();
 648            }
 649        }
 650        if (filename == null) {
 651            final List<String> segments = uri.getPathSegments();
 652            if (segments.size() > 0) {
 653                filename = segments.get(segments.size() - 1);
 654            }
 655        }
 656        int pos = filename == null ? -1 : filename.lastIndexOf('.');
 657        return pos > 0 ? filename.substring(pos + 1) : null;
 658    }
 659
 660    private void copyImageToPrivateStorage(File file, Uri image, int sampleSize) throws FileCopyException {
 661        file.getParentFile().mkdirs();
 662        InputStream is = null;
 663        OutputStream os = null;
 664        try {
 665            if (!file.exists() && !file.createNewFile()) {
 666                throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
 667            }
 668            is = mXmppConnectionService.getContentResolver().openInputStream(image);
 669            if (is == null) {
 670                throw new FileCopyException(R.string.error_not_an_image_file);
 671            }
 672            Bitmap originalBitmap;
 673            BitmapFactory.Options options = new BitmapFactory.Options();
 674            int inSampleSize = (int) Math.pow(2, sampleSize);
 675            Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
 676            options.inSampleSize = inSampleSize;
 677            originalBitmap = BitmapFactory.decodeStream(is, null, options);
 678            is.close();
 679            if (originalBitmap == null) {
 680                throw new FileCopyException(R.string.error_not_an_image_file);
 681            }
 682            Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
 683            int rotation = getRotation(image);
 684            scaledBitmap = rotate(scaledBitmap, rotation);
 685            boolean targetSizeReached = false;
 686            int quality = Config.IMAGE_QUALITY;
 687            final int imageMaxSize = mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize);
 688            while (!targetSizeReached) {
 689                os = new FileOutputStream(file);
 690                boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
 691                if (!success) {
 692                    throw new FileCopyException(R.string.error_compressing_image);
 693                }
 694                os.flush();
 695                targetSizeReached = file.length() <= imageMaxSize || quality <= 50;
 696                quality -= 5;
 697            }
 698            scaledBitmap.recycle();
 699        } catch (FileNotFoundException e) {
 700            throw new FileCopyException(R.string.error_file_not_found);
 701        } catch (IOException e) {
 702            e.printStackTrace();
 703            throw new FileCopyException(R.string.error_io_exception);
 704        } catch (SecurityException e) {
 705            throw new FileCopyException(R.string.error_security_exception_during_image_copy);
 706        } catch (OutOfMemoryError e) {
 707            ++sampleSize;
 708            if (sampleSize <= 3) {
 709                copyImageToPrivateStorage(file, image, sampleSize);
 710            } else {
 711                throw new FileCopyException(R.string.error_out_of_memory);
 712            }
 713        } finally {
 714            close(os);
 715            close(is);
 716        }
 717    }
 718
 719    public void copyImageToPrivateStorage(File file, Uri image) throws FileCopyException {
 720        Log.d(Config.LOGTAG, "copy image (" + image.toString() + ") to private storage " + file.getAbsolutePath());
 721        copyImageToPrivateStorage(file, image, 0);
 722    }
 723
 724    public void copyImageToPrivateStorage(Message message, Uri image) throws FileCopyException {
 725        switch (Config.IMAGE_FORMAT) {
 726            case JPEG:
 727                message.setRelativeFilePath(message.getUuid() + ".jpg");
 728                break;
 729            case PNG:
 730                message.setRelativeFilePath(message.getUuid() + ".png");
 731                break;
 732            case WEBP:
 733                message.setRelativeFilePath(message.getUuid() + ".webp");
 734                break;
 735        }
 736        copyImageToPrivateStorage(getFile(message), image);
 737        updateFileParams(message);
 738    }
 739
 740    public boolean unusualBounds(Uri image) {
 741        try {
 742            BitmapFactory.Options options = new BitmapFactory.Options();
 743            options.inJustDecodeBounds = true;
 744            BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(image), null, options);
 745            float ratio = (float) options.outHeight / options.outWidth;
 746            return ratio > (21.0f / 9.0f) || ratio < (9.0f / 21.0f);
 747        } catch (Exception e) {
 748            return false;
 749        }
 750    }
 751
 752    private int getRotation(File file) {
 753        return getRotation(Uri.parse("file://" + file.getAbsolutePath()));
 754    }
 755
 756    private int getRotation(Uri image) {
 757        InputStream is = null;
 758        try {
 759            is = mXmppConnectionService.getContentResolver().openInputStream(image);
 760            return ExifHelper.getOrientation(is);
 761        } catch (FileNotFoundException e) {
 762            return 0;
 763        } finally {
 764            close(is);
 765        }
 766    }
 767
 768    public Bitmap getThumbnail(Message message, int size, boolean cacheOnly) throws IOException {
 769        final String uuid = message.getUuid();
 770        final LruCache<String, Bitmap> cache = mXmppConnectionService.getBitmapCache();
 771        Bitmap thumbnail = cache.get(uuid);
 772        if ((thumbnail == null) && (!cacheOnly)) {
 773            synchronized (THUMBNAIL_LOCK) {
 774                thumbnail = cache.get(uuid);
 775                if (thumbnail != null) {
 776                    return thumbnail;
 777                }
 778                DownloadableFile file = getFile(message);
 779                final String mime = file.getMimeType();
 780                if (mime.startsWith("video/")) {
 781                    thumbnail = getVideoPreview(file, size);
 782                } else {
 783                    Bitmap fullsize = getFullsizeImagePreview(file, size);
 784                    if (fullsize == null) {
 785                        throw new FileNotFoundException();
 786                    }
 787                    thumbnail = resize(fullsize, size);
 788                    thumbnail = rotate(thumbnail, getRotation(file));
 789                    if (mime.equals("image/gif")) {
 790                        Bitmap withGifOverlay = thumbnail.copy(Bitmap.Config.ARGB_8888, true);
 791                        drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
 792                        thumbnail.recycle();
 793                        thumbnail = withGifOverlay;
 794                    }
 795                }
 796                cache.put(uuid, thumbnail);
 797            }
 798        }
 799        return thumbnail;
 800    }
 801
 802    private Bitmap getFullsizeImagePreview(File file, int size) {
 803        BitmapFactory.Options options = new BitmapFactory.Options();
 804        options.inSampleSize = calcSampleSize(file, size);
 805        try {
 806            return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
 807        } catch (OutOfMemoryError e) {
 808            options.inSampleSize *= 2;
 809            return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
 810        }
 811    }
 812
 813    private void drawOverlay(Bitmap bitmap, int resource, float factor) {
 814        Bitmap overlay = BitmapFactory.decodeResource(mXmppConnectionService.getResources(), resource);
 815        Canvas canvas = new Canvas(bitmap);
 816        float targetSize = Math.min(canvas.getWidth(), canvas.getHeight()) * factor;
 817        Log.d(Config.LOGTAG, "target size overlay: " + targetSize + " overlay bitmap size was " + overlay.getHeight());
 818        float left = (canvas.getWidth() - targetSize) / 2.0f;
 819        float top = (canvas.getHeight() - targetSize) / 2.0f;
 820        RectF dst = new RectF(left, top, left + targetSize - 1, top + targetSize - 1);
 821        canvas.drawBitmap(overlay, null, dst, createAntiAliasingPaint());
 822    }
 823
 824    /**
 825     * https://stackoverflow.com/a/3943023/210897
 826     */
 827    private boolean paintOverlayBlack(final Bitmap bitmap) {
 828        final int h = bitmap.getHeight();
 829        final int w = bitmap.getWidth();
 830        int record = 0;
 831        for (int y = Math.round(h * IGNORE_PADDING); y < h - Math.round(h * IGNORE_PADDING); ++y) {
 832            for (int x = Math.round(w * IGNORE_PADDING); x < w - Math.round(w * IGNORE_PADDING); ++x) {
 833                int pixel = bitmap.getPixel(x, y);
 834                if ((Color.red(pixel) * 0.299 + Color.green(pixel) * 0.587 + Color.blue(pixel) * 0.114) > 186) {
 835                    --record;
 836                } else {
 837                    ++record;
 838                }
 839            }
 840        }
 841        return record < 0;
 842    }
 843
 844    private Bitmap cropCenterSquareVideo(Uri uri, int size) {
 845        MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
 846        Bitmap frame;
 847        try {
 848            metadataRetriever.setDataSource(mXmppConnectionService, uri);
 849            frame = metadataRetriever.getFrameAtTime(0);
 850            metadataRetriever.release();
 851            return cropCenterSquare(frame, size);
 852        } catch (Exception e) {
 853            frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
 854            frame.eraseColor(0xff000000);
 855            return frame;
 856        }
 857    }
 858
 859    private Bitmap getVideoPreview(File file, int size) {
 860        MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
 861        Bitmap frame;
 862        try {
 863            metadataRetriever.setDataSource(file.getAbsolutePath());
 864            frame = metadataRetriever.getFrameAtTime(0);
 865            metadataRetriever.release();
 866            frame = resize(frame, size);
 867        } catch (IOException | RuntimeException e) {
 868            frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
 869            frame.eraseColor(0xff000000);
 870        }
 871        drawOverlay(frame, paintOverlayBlack(frame) ? R.drawable.play_video_black : R.drawable.play_video_white, 0.75f);
 872        return frame;
 873    }
 874
 875    public Uri getTakePhotoUri() {
 876        File file;
 877        if (Config.ONLY_INTERNAL_STORAGE) {
 878            file = new File(mXmppConnectionService.getCacheDir().getAbsolutePath(), "Camera/IMG_" + this.IMAGE_DATE_FORMAT.format(new Date()) + ".jpg");
 879        } else {
 880            file = new File(getTakePhotoPath() + "IMG_" + this.IMAGE_DATE_FORMAT.format(new Date()) + ".jpg");
 881        }
 882        file.getParentFile().mkdirs();
 883        return getUriForFile(mXmppConnectionService, file);
 884    }
 885
 886    public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
 887
 888        final Avatar uncompressAvatar = getUncompressedAvatar(image);
 889        if (uncompressAvatar != null && uncompressAvatar.image.length() <= Config.AVATAR_CHAR_LIMIT) {
 890            return uncompressAvatar;
 891        }
 892        if (uncompressAvatar != null) {
 893            Log.d(Config.LOGTAG, "uncompressed avatar exceeded char limit by " + (uncompressAvatar.image.length() - Config.AVATAR_CHAR_LIMIT));
 894        }
 895
 896        Bitmap bm = cropCenterSquare(image, size);
 897        if (bm == null) {
 898            return null;
 899        }
 900        if (hasAlpha(bm)) {
 901            Log.d(Config.LOGTAG, "alpha in avatar detected; uploading as PNG");
 902            bm.recycle();
 903            bm = cropCenterSquare(image, 96);
 904            return getPepAvatar(bm, Bitmap.CompressFormat.PNG, 100);
 905        }
 906        return getPepAvatar(bm, format, 100);
 907    }
 908
 909    private Avatar getUncompressedAvatar(Uri uri) {
 910        Bitmap bitmap = null;
 911        try {
 912            bitmap = BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
 913            return getPepAvatar(bitmap, Bitmap.CompressFormat.PNG, 100);
 914        } catch (Exception e) {
 915            return null;
 916        } finally {
 917            if (bitmap != null) {
 918                bitmap.recycle();
 919            }
 920        }
 921    }
 922
 923    private Avatar getPepAvatar(Bitmap bitmap, Bitmap.CompressFormat format, int quality) {
 924        try {
 925            ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
 926            Base64OutputStream mBase64OutputStream = new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
 927            MessageDigest digest = MessageDigest.getInstance("SHA-1");
 928            DigestOutputStream mDigestOutputStream = new DigestOutputStream(mBase64OutputStream, digest);
 929            if (!bitmap.compress(format, quality, mDigestOutputStream)) {
 930                return null;
 931            }
 932            mDigestOutputStream.flush();
 933            mDigestOutputStream.close();
 934            long chars = mByteArrayOutputStream.size();
 935            if (format != Bitmap.CompressFormat.PNG && quality >= 50 && chars >= Config.AVATAR_CHAR_LIMIT) {
 936                int q = quality - 2;
 937                Log.d(Config.LOGTAG, "avatar char length was " + chars + " reducing quality to " + q);
 938                return getPepAvatar(bitmap, format, q);
 939            }
 940            Log.d(Config.LOGTAG, "settled on char length " + chars + " with quality=" + quality);
 941            final Avatar avatar = new Avatar();
 942            avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
 943            avatar.image = new String(mByteArrayOutputStream.toByteArray());
 944            if (format.equals(Bitmap.CompressFormat.WEBP)) {
 945                avatar.type = "image/webp";
 946            } else if (format.equals(Bitmap.CompressFormat.JPEG)) {
 947                avatar.type = "image/jpeg";
 948            } else if (format.equals(Bitmap.CompressFormat.PNG)) {
 949                avatar.type = "image/png";
 950            }
 951            avatar.width = bitmap.getWidth();
 952            avatar.height = bitmap.getHeight();
 953            return avatar;
 954        } catch (OutOfMemoryError e) {
 955            Log.d(Config.LOGTAG,"unable to convert avatar to base64 due to low memory");
 956            return null;
 957        } catch (Exception e) {
 958            return null;
 959        }
 960    }
 961
 962    public Avatar getStoredPepAvatar(String hash) {
 963        if (hash == null) {
 964            return null;
 965        }
 966        Avatar avatar = new Avatar();
 967        File file = new File(getAvatarPath(hash));
 968        FileInputStream is = null;
 969        try {
 970            avatar.size = file.length();
 971            BitmapFactory.Options options = new BitmapFactory.Options();
 972            options.inJustDecodeBounds = true;
 973            BitmapFactory.decodeFile(file.getAbsolutePath(), options);
 974            is = new FileInputStream(file);
 975            ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
 976            Base64OutputStream mBase64OutputStream = new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
 977            MessageDigest digest = MessageDigest.getInstance("SHA-1");
 978            DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
 979            byte[] buffer = new byte[4096];
 980            int length;
 981            while ((length = is.read(buffer)) > 0) {
 982                os.write(buffer, 0, length);
 983            }
 984            os.flush();
 985            os.close();
 986            avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
 987            avatar.image = new String(mByteArrayOutputStream.toByteArray());
 988            avatar.height = options.outHeight;
 989            avatar.width = options.outWidth;
 990            avatar.type = options.outMimeType;
 991            return avatar;
 992        } catch (NoSuchAlgorithmException | IOException e) {
 993            return null;
 994        } finally {
 995            close(is);
 996        }
 997    }
 998
 999    public boolean isAvatarCached(Avatar avatar) {
1000        File file = new File(getAvatarPath(avatar.getFilename()));
1001        return file.exists();
1002    }
1003
1004    public boolean save(final Avatar avatar) {
1005        File file;
1006        if (isAvatarCached(avatar)) {
1007            file = new File(getAvatarPath(avatar.getFilename()));
1008            avatar.size = file.length();
1009        } else {
1010            file = new File(mXmppConnectionService.getCacheDir().getAbsolutePath() + "/" + UUID.randomUUID().toString());
1011            if (file.getParentFile().mkdirs()) {
1012                Log.d(Config.LOGTAG, "created cache directory");
1013            }
1014            OutputStream os = null;
1015            try {
1016                if (!file.createNewFile()) {
1017                    Log.d(Config.LOGTAG, "unable to create temporary file " + file.getAbsolutePath());
1018                }
1019                os = new FileOutputStream(file);
1020                MessageDigest digest = MessageDigest.getInstance("SHA-1");
1021                digest.reset();
1022                DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
1023                final byte[] bytes = avatar.getImageAsBytes();
1024                mDigestOutputStream.write(bytes);
1025                mDigestOutputStream.flush();
1026                mDigestOutputStream.close();
1027                String sha1sum = CryptoHelper.bytesToHex(digest.digest());
1028                if (sha1sum.equals(avatar.sha1sum)) {
1029                    File outputFile = new File(getAvatarPath(avatar.getFilename()));
1030                    if (outputFile.getParentFile().mkdirs()) {
1031                        Log.d(Config.LOGTAG, "created avatar directory");
1032                    }
1033                    String filename = getAvatarPath(avatar.getFilename());
1034                    if (!file.renameTo(new File(filename))) {
1035                        Log.d(Config.LOGTAG, "unable to rename " + file.getAbsolutePath() + " to " + outputFile);
1036                        return false;
1037                    }
1038                } else {
1039                    Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
1040                    if (!file.delete()) {
1041                        Log.d(Config.LOGTAG, "unable to delete temporary file");
1042                    }
1043                    return false;
1044                }
1045                avatar.size = bytes.length;
1046            } catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
1047                return false;
1048            } finally {
1049                close(os);
1050            }
1051        }
1052        return true;
1053    }
1054
1055    private String getAvatarPath(String avatar) {
1056        return mXmppConnectionService.getFilesDir().getAbsolutePath() + "/avatars/" + avatar;
1057    }
1058
1059    public Uri getAvatarUri(String avatar) {
1060        return Uri.parse("file:" + getAvatarPath(avatar));
1061    }
1062
1063    public Bitmap cropCenterSquare(Uri image, int size) {
1064        if (image == null) {
1065            return null;
1066        }
1067        InputStream is = null;
1068        try {
1069            BitmapFactory.Options options = new BitmapFactory.Options();
1070            options.inSampleSize = calcSampleSize(image, size);
1071            is = mXmppConnectionService.getContentResolver().openInputStream(image);
1072            if (is == null) {
1073                return null;
1074            }
1075            Bitmap input = BitmapFactory.decodeStream(is, null, options);
1076            if (input == null) {
1077                return null;
1078            } else {
1079                input = rotate(input, getRotation(image));
1080                return cropCenterSquare(input, size);
1081            }
1082        } catch (FileNotFoundException | SecurityException e) {
1083            Log.d(Config.LOGTAG,"unable to open file "+image.toString(), e);
1084            return null;
1085        } finally {
1086            close(is);
1087        }
1088    }
1089
1090    public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
1091        if (image == null) {
1092            return null;
1093        }
1094        InputStream is = null;
1095        try {
1096            BitmapFactory.Options options = new BitmapFactory.Options();
1097            options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
1098            is = mXmppConnectionService.getContentResolver().openInputStream(image);
1099            if (is == null) {
1100                return null;
1101            }
1102            Bitmap source = BitmapFactory.decodeStream(is, null, options);
1103            if (source == null) {
1104                return null;
1105            }
1106            int sourceWidth = source.getWidth();
1107            int sourceHeight = source.getHeight();
1108            float xScale = (float) newWidth / sourceWidth;
1109            float yScale = (float) newHeight / sourceHeight;
1110            float scale = Math.max(xScale, yScale);
1111            float scaledWidth = scale * sourceWidth;
1112            float scaledHeight = scale * sourceHeight;
1113            float left = (newWidth - scaledWidth) / 2;
1114            float top = (newHeight - scaledHeight) / 2;
1115
1116            RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
1117            Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
1118            Canvas canvas = new Canvas(dest);
1119            canvas.drawBitmap(source, null, targetRect, createAntiAliasingPaint());
1120            if (source.isRecycled()) {
1121                source.recycle();
1122            }
1123            return dest;
1124        } catch (SecurityException e) {
1125            return null; //android 6.0 with revoked permissions for example
1126        } catch (FileNotFoundException e) {
1127            return null;
1128        } finally {
1129            close(is);
1130        }
1131    }
1132
1133    public Bitmap cropCenterSquare(Bitmap input, int size) {
1134        int w = input.getWidth();
1135        int h = input.getHeight();
1136
1137        float scale = Math.max((float) size / h, (float) size / w);
1138
1139        float outWidth = scale * w;
1140        float outHeight = scale * h;
1141        float left = (size - outWidth) / 2;
1142        float top = (size - outHeight) / 2;
1143        RectF target = new RectF(left, top, left + outWidth, top + outHeight);
1144
1145        Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1146        Canvas canvas = new Canvas(output);
1147        canvas.drawBitmap(input, null, target, createAntiAliasingPaint());
1148        if (!input.isRecycled()) {
1149            input.recycle();
1150        }
1151        return output;
1152    }
1153
1154    private int calcSampleSize(Uri image, int size) throws FileNotFoundException, SecurityException {
1155        BitmapFactory.Options options = new BitmapFactory.Options();
1156        options.inJustDecodeBounds = true;
1157        BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(image), null, options);
1158        return calcSampleSize(options, size);
1159    }
1160
1161    public void updateFileParams(Message message) {
1162        updateFileParams(message, null);
1163    }
1164
1165    public void updateFileParams(Message message, URL url) {
1166        DownloadableFile file = getFile(message);
1167        final String mime = file.getMimeType();
1168        boolean image = message.getType() == Message.TYPE_IMAGE || (mime != null && mime.startsWith("image/"));
1169        boolean video = mime != null && mime.startsWith("video/");
1170        boolean audio = mime != null && mime.startsWith("audio/");
1171        final StringBuilder body = new StringBuilder();
1172        if (url != null) {
1173            body.append(url.toString());
1174        }
1175        body.append('|').append(file.getSize());
1176        if (image || video) {
1177            try {
1178                Dimensions dimensions = image ? getImageDimensions(file) : getVideoDimensions(file);
1179                if (dimensions.valid()) {
1180                    body.append('|').append(dimensions.width).append('|').append(dimensions.height);
1181                }
1182            } catch (NotAVideoFile notAVideoFile) {
1183                Log.d(Config.LOGTAG, "file with mime type " + file.getMimeType() + " was not a video file");
1184                //fall threw
1185            }
1186        } else if (audio) {
1187            body.append("|0|0|").append(getMediaRuntime(file));
1188        }
1189        message.setBody(body.toString());
1190    }
1191
1192    public int getMediaRuntime(Uri uri) {
1193        try {
1194            MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
1195            mediaMetadataRetriever.setDataSource(mXmppConnectionService, uri);
1196            return Integer.parseInt(mediaMetadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION));
1197        } catch (RuntimeException e) {
1198            return 0;
1199        }
1200    }
1201
1202    private int getMediaRuntime(File file) {
1203        try {
1204            MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
1205            mediaMetadataRetriever.setDataSource(file.toString());
1206            return Integer.parseInt(mediaMetadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION));
1207        } catch (RuntimeException e) {
1208            return 0;
1209        }
1210    }
1211
1212    private Dimensions getImageDimensions(File file) {
1213        BitmapFactory.Options options = new BitmapFactory.Options();
1214        options.inJustDecodeBounds = true;
1215        BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1216        int rotation = getRotation(file);
1217        boolean rotated = rotation == 90 || rotation == 270;
1218        int imageHeight = rotated ? options.outWidth : options.outHeight;
1219        int imageWidth = rotated ? options.outHeight : options.outWidth;
1220        return new Dimensions(imageHeight, imageWidth);
1221    }
1222
1223    private Dimensions getVideoDimensions(File file) throws NotAVideoFile {
1224        MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1225        try {
1226            metadataRetriever.setDataSource(file.getAbsolutePath());
1227        } catch (RuntimeException e) {
1228            throw new NotAVideoFile(e);
1229        }
1230        return getVideoDimensions(metadataRetriever);
1231    }
1232
1233    public Bitmap getAvatar(String avatar, int size) {
1234        if (avatar == null) {
1235            return null;
1236        }
1237        Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
1238        if (bm == null) {
1239            return null;
1240        }
1241        return bm;
1242    }
1243
1244    public boolean isFileAvailable(Message message) {
1245        return getFile(message).exists();
1246    }
1247
1248    private static class Dimensions {
1249        public final int width;
1250        public final int height;
1251
1252        Dimensions(int height, int width) {
1253            this.width = width;
1254            this.height = height;
1255        }
1256
1257        public int getMin() {
1258            return Math.min(width, height);
1259        }
1260
1261        public boolean valid() {
1262            return width > 0 && height > 0;
1263        }
1264    }
1265
1266    private static class NotAVideoFile extends Exception {
1267        public NotAVideoFile(Throwable t) {
1268            super(t);
1269        }
1270
1271        public NotAVideoFile() {
1272            super();
1273        }
1274    }
1275
1276    public class FileCopyException extends Exception {
1277        private static final long serialVersionUID = -1010013599132881427L;
1278        private int resId;
1279
1280        public FileCopyException(int resId) {
1281            this.resId = resId;
1282        }
1283
1284        public int getResId() {
1285            return resId;
1286        }
1287    }
1288}