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) {
 477        return getFileForPath(path,MimeUtils.guessMimeTypeFromExtension(MimeUtils.extractRelevantExtension(path)));
 478    }
 479
 480    public DownloadableFile getFileForPath(String path, String mime) {
 481        final DownloadableFile file;
 482        if (path.startsWith("/")) {
 483            file = new DownloadableFile(path);
 484        } else {
 485            if (mime != null && mime.startsWith("image/")) {
 486                file = new DownloadableFile(getConversationsDirectory("Images") + path);
 487            } else if (mime != null && mime.startsWith("video/")) {
 488                file = new DownloadableFile(getConversationsDirectory("Videos") + path);
 489            } else {
 490                file = new DownloadableFile(getConversationsDirectory("Files") + path);
 491            }
 492        }
 493        return file;
 494    }
 495
 496    public boolean isInternalFile(final File file) {
 497        final File internalFile = getFileForPath(file.getName());
 498        return file.getAbsolutePath().equals(internalFile.getAbsolutePath());
 499    }
 500
 501    public DownloadableFile getFile(Message message, boolean decrypted) {
 502        final boolean encrypted = !decrypted
 503                && (message.getEncryption() == Message.ENCRYPTION_PGP
 504                || message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
 505        String path = message.getRelativeFilePath();
 506        if (path == null) {
 507            path = message.getUuid();
 508        }
 509        final DownloadableFile file = getFileForPath(path, message.getMimeType());
 510        if (encrypted) {
 511            return new DownloadableFile(getConversationsDirectory("Files") + file.getName() + ".pgp");
 512        } else {
 513            return file;
 514        }
 515    }
 516
 517    public List<Attachment> convertToAttachments(List<DatabaseBackend.FilePath> relativeFilePaths) {
 518        List<Attachment> attachments = new ArrayList<>();
 519        for(DatabaseBackend.FilePath relativeFilePath : relativeFilePaths) {
 520            final String mime = MimeUtils.guessMimeTypeFromExtension(MimeUtils.extractRelevantExtension(relativeFilePath.path));
 521            Log.d(Config.LOGTAG,"mime="+mime);
 522            File file = getFileForPath(relativeFilePath.path, mime);
 523            if (file.exists()) {
 524                attachments.add(Attachment.of(relativeFilePath.uuid, file,mime));
 525            } else {
 526                Log.d(Config.LOGTAG,"file "+file.getAbsolutePath()+" doesnt exist");
 527            }
 528        }
 529        return attachments;
 530    }
 531
 532    private String getConversationsDirectory(final String type) {
 533        return getConversationsDirectory(mXmppConnectionService, type);
 534    }
 535
 536    private Bitmap resize(final Bitmap originalBitmap, int size) throws IOException {
 537        int w = originalBitmap.getWidth();
 538        int h = originalBitmap.getHeight();
 539        if (w <= 0 || h <= 0) {
 540            throw new IOException("Decoded bitmap reported bounds smaller 0");
 541        } else if (Math.max(w, h) > size) {
 542            int scalledW;
 543            int scalledH;
 544            if (w <= h) {
 545                scalledW = Math.max((int) (w / ((double) h / size)), 1);
 546                scalledH = size;
 547            } else {
 548                scalledW = size;
 549                scalledH = Math.max((int) (h / ((double) w / size)), 1);
 550            }
 551            final Bitmap result = Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true);
 552            if (!originalBitmap.isRecycled()) {
 553                originalBitmap.recycle();
 554            }
 555            return result;
 556        } else {
 557            return originalBitmap;
 558        }
 559    }
 560
 561    public boolean useImageAsIs(Uri uri) {
 562        String path = getOriginalPath(uri);
 563        if (path == null || isPathBlacklisted(path)) {
 564            return false;
 565        }
 566        File file = new File(path);
 567        long size = file.length();
 568        if (size == 0 || size >= mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize)) {
 569            return false;
 570        }
 571        BitmapFactory.Options options = new BitmapFactory.Options();
 572        options.inJustDecodeBounds = true;
 573        try {
 574            BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(uri), null, options);
 575            if (options.outMimeType == null || options.outHeight <= 0 || options.outWidth <= 0) {
 576                return false;
 577            }
 578            return (options.outWidth <= Config.IMAGE_SIZE && options.outHeight <= Config.IMAGE_SIZE && options.outMimeType.contains(Config.IMAGE_FORMAT.name().toLowerCase()));
 579        } catch (FileNotFoundException e) {
 580            return false;
 581        }
 582    }
 583
 584    public String getOriginalPath(Uri uri) {
 585        return FileUtils.getPath(mXmppConnectionService, uri);
 586    }
 587
 588    private void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
 589        Log.d(Config.LOGTAG, "copy file (" + uri.toString() + ") to private storage " + file.getAbsolutePath());
 590        file.getParentFile().mkdirs();
 591        OutputStream os = null;
 592        InputStream is = null;
 593        try {
 594            file.createNewFile();
 595            os = new FileOutputStream(file);
 596            is = mXmppConnectionService.getContentResolver().openInputStream(uri);
 597            byte[] buffer = new byte[1024];
 598            int length;
 599            while ((length = is.read(buffer)) > 0) {
 600                try {
 601                    os.write(buffer, 0, length);
 602                } catch (IOException e) {
 603                    throw new FileWriterException();
 604                }
 605            }
 606            try {
 607                os.flush();
 608            } catch (IOException e) {
 609                throw new FileWriterException();
 610            }
 611        } catch (FileNotFoundException e) {
 612            throw new FileCopyException(R.string.error_file_not_found);
 613        } catch (FileWriterException e) {
 614            throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
 615        } catch (IOException e) {
 616            e.printStackTrace();
 617            throw new FileCopyException(R.string.error_io_exception);
 618        } finally {
 619            close(os);
 620            close(is);
 621        }
 622    }
 623
 624    public void copyFileToPrivateStorage(Message message, Uri uri, String type) throws FileCopyException {
 625        String mime = MimeUtils.guessMimeTypeFromUriAndMime(mXmppConnectionService, uri, type);
 626        Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage (mime=" + mime + ")");
 627        String extension = MimeUtils.guessExtensionFromMimeType(mime);
 628        if (extension == null) {
 629            Log.d(Config.LOGTAG, "extension from mime type was null");
 630            extension = getExtensionFromUri(uri);
 631        }
 632        if ("ogg".equals(extension) && type != null && type.startsWith("audio/")) {
 633            extension = "oga";
 634        }
 635        message.setRelativeFilePath(message.getUuid() + "." + extension);
 636        copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
 637    }
 638
 639    private String getExtensionFromUri(Uri uri) {
 640        String[] projection = {MediaStore.MediaColumns.DATA};
 641        String filename = null;
 642        Cursor cursor;
 643        try {
 644            cursor = mXmppConnectionService.getContentResolver().query(uri, projection, null, null, null);
 645        } catch (IllegalArgumentException e) {
 646            cursor = null;
 647        }
 648        if (cursor != null) {
 649            try {
 650                if (cursor.moveToFirst()) {
 651                    filename = cursor.getString(0);
 652                }
 653            } catch (Exception e) {
 654                filename = null;
 655            } finally {
 656                cursor.close();
 657            }
 658        }
 659        if (filename == null) {
 660            final List<String> segments = uri.getPathSegments();
 661            if (segments.size() > 0) {
 662                filename = segments.get(segments.size() - 1);
 663            }
 664        }
 665        int pos = filename == null ? -1 : filename.lastIndexOf('.');
 666        return pos > 0 ? filename.substring(pos + 1) : null;
 667    }
 668
 669    private void copyImageToPrivateStorage(File file, Uri image, int sampleSize) throws FileCopyException {
 670        file.getParentFile().mkdirs();
 671        InputStream is = null;
 672        OutputStream os = null;
 673        try {
 674            if (!file.exists() && !file.createNewFile()) {
 675                throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
 676            }
 677            is = mXmppConnectionService.getContentResolver().openInputStream(image);
 678            if (is == null) {
 679                throw new FileCopyException(R.string.error_not_an_image_file);
 680            }
 681            Bitmap originalBitmap;
 682            BitmapFactory.Options options = new BitmapFactory.Options();
 683            int inSampleSize = (int) Math.pow(2, sampleSize);
 684            Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
 685            options.inSampleSize = inSampleSize;
 686            originalBitmap = BitmapFactory.decodeStream(is, null, options);
 687            is.close();
 688            if (originalBitmap == null) {
 689                throw new FileCopyException(R.string.error_not_an_image_file);
 690            }
 691            Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
 692            int rotation = getRotation(image);
 693            scaledBitmap = rotate(scaledBitmap, rotation);
 694            boolean targetSizeReached = false;
 695            int quality = Config.IMAGE_QUALITY;
 696            final int imageMaxSize = mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize);
 697            while (!targetSizeReached) {
 698                os = new FileOutputStream(file);
 699                boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
 700                if (!success) {
 701                    throw new FileCopyException(R.string.error_compressing_image);
 702                }
 703                os.flush();
 704                targetSizeReached = file.length() <= imageMaxSize || quality <= 50;
 705                quality -= 5;
 706            }
 707            scaledBitmap.recycle();
 708        } catch (FileNotFoundException e) {
 709            throw new FileCopyException(R.string.error_file_not_found);
 710        } catch (IOException e) {
 711            e.printStackTrace();
 712            throw new FileCopyException(R.string.error_io_exception);
 713        } catch (SecurityException e) {
 714            throw new FileCopyException(R.string.error_security_exception_during_image_copy);
 715        } catch (OutOfMemoryError e) {
 716            ++sampleSize;
 717            if (sampleSize <= 3) {
 718                copyImageToPrivateStorage(file, image, sampleSize);
 719            } else {
 720                throw new FileCopyException(R.string.error_out_of_memory);
 721            }
 722        } finally {
 723            close(os);
 724            close(is);
 725        }
 726    }
 727
 728    public void copyImageToPrivateStorage(File file, Uri image) throws FileCopyException {
 729        Log.d(Config.LOGTAG, "copy image (" + image.toString() + ") to private storage " + file.getAbsolutePath());
 730        copyImageToPrivateStorage(file, image, 0);
 731    }
 732
 733    public void copyImageToPrivateStorage(Message message, Uri image) throws FileCopyException {
 734        switch (Config.IMAGE_FORMAT) {
 735            case JPEG:
 736                message.setRelativeFilePath(message.getUuid() + ".jpg");
 737                break;
 738            case PNG:
 739                message.setRelativeFilePath(message.getUuid() + ".png");
 740                break;
 741            case WEBP:
 742                message.setRelativeFilePath(message.getUuid() + ".webp");
 743                break;
 744        }
 745        copyImageToPrivateStorage(getFile(message), image);
 746        updateFileParams(message);
 747    }
 748
 749    public boolean unusualBounds(Uri image) {
 750        try {
 751            BitmapFactory.Options options = new BitmapFactory.Options();
 752            options.inJustDecodeBounds = true;
 753            BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(image), null, options);
 754            float ratio = (float) options.outHeight / options.outWidth;
 755            return ratio > (21.0f / 9.0f) || ratio < (9.0f / 21.0f);
 756        } catch (Exception e) {
 757            return false;
 758        }
 759    }
 760
 761    private int getRotation(File file) {
 762        return getRotation(Uri.parse("file://" + file.getAbsolutePath()));
 763    }
 764
 765    private int getRotation(Uri image) {
 766        InputStream is = null;
 767        try {
 768            is = mXmppConnectionService.getContentResolver().openInputStream(image);
 769            return ExifHelper.getOrientation(is);
 770        } catch (FileNotFoundException e) {
 771            return 0;
 772        } finally {
 773            close(is);
 774        }
 775    }
 776
 777    public Bitmap getThumbnail(Message message, int size, boolean cacheOnly) throws IOException {
 778        final String uuid = message.getUuid();
 779        final LruCache<String, Bitmap> cache = mXmppConnectionService.getBitmapCache();
 780        Bitmap thumbnail = cache.get(uuid);
 781        if ((thumbnail == null) && (!cacheOnly)) {
 782            synchronized (THUMBNAIL_LOCK) {
 783                thumbnail = cache.get(uuid);
 784                if (thumbnail != null) {
 785                    return thumbnail;
 786                }
 787                DownloadableFile file = getFile(message);
 788                final String mime = file.getMimeType();
 789                if (mime.startsWith("video/")) {
 790                    thumbnail = getVideoPreview(file, size);
 791                } else {
 792                    Bitmap fullsize = getFullsizeImagePreview(file, size);
 793                    if (fullsize == null) {
 794                        throw new FileNotFoundException();
 795                    }
 796                    thumbnail = resize(fullsize, size);
 797                    thumbnail = rotate(thumbnail, getRotation(file));
 798                    if (mime.equals("image/gif")) {
 799                        Bitmap withGifOverlay = thumbnail.copy(Bitmap.Config.ARGB_8888, true);
 800                        drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
 801                        thumbnail.recycle();
 802                        thumbnail = withGifOverlay;
 803                    }
 804                }
 805                cache.put(uuid, thumbnail);
 806            }
 807        }
 808        return thumbnail;
 809    }
 810
 811    private Bitmap getFullsizeImagePreview(File file, int size) {
 812        BitmapFactory.Options options = new BitmapFactory.Options();
 813        options.inSampleSize = calcSampleSize(file, size);
 814        try {
 815            return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
 816        } catch (OutOfMemoryError e) {
 817            options.inSampleSize *= 2;
 818            return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
 819        }
 820    }
 821
 822    private void drawOverlay(Bitmap bitmap, int resource, float factor) {
 823        Bitmap overlay = BitmapFactory.decodeResource(mXmppConnectionService.getResources(), resource);
 824        Canvas canvas = new Canvas(bitmap);
 825        float targetSize = Math.min(canvas.getWidth(), canvas.getHeight()) * factor;
 826        Log.d(Config.LOGTAG, "target size overlay: " + targetSize + " overlay bitmap size was " + overlay.getHeight());
 827        float left = (canvas.getWidth() - targetSize) / 2.0f;
 828        float top = (canvas.getHeight() - targetSize) / 2.0f;
 829        RectF dst = new RectF(left, top, left + targetSize - 1, top + targetSize - 1);
 830        canvas.drawBitmap(overlay, null, dst, createAntiAliasingPaint());
 831    }
 832
 833    /**
 834     * https://stackoverflow.com/a/3943023/210897
 835     */
 836    private boolean paintOverlayBlack(final Bitmap bitmap) {
 837        final int h = bitmap.getHeight();
 838        final int w = bitmap.getWidth();
 839        int record = 0;
 840        for (int y = Math.round(h * IGNORE_PADDING); y < h - Math.round(h * IGNORE_PADDING); ++y) {
 841            for (int x = Math.round(w * IGNORE_PADDING); x < w - Math.round(w * IGNORE_PADDING); ++x) {
 842                int pixel = bitmap.getPixel(x, y);
 843                if ((Color.red(pixel) * 0.299 + Color.green(pixel) * 0.587 + Color.blue(pixel) * 0.114) > 186) {
 844                    --record;
 845                } else {
 846                    ++record;
 847                }
 848            }
 849        }
 850        return record < 0;
 851    }
 852
 853    private Bitmap cropCenterSquareVideo(Uri uri, int size) {
 854        MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
 855        Bitmap frame;
 856        try {
 857            metadataRetriever.setDataSource(mXmppConnectionService, uri);
 858            frame = metadataRetriever.getFrameAtTime(0);
 859            metadataRetriever.release();
 860            return cropCenterSquare(frame, size);
 861        } catch (Exception e) {
 862            frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
 863            frame.eraseColor(0xff000000);
 864            return frame;
 865        }
 866    }
 867
 868    private Bitmap getVideoPreview(File file, int size) {
 869        MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
 870        Bitmap frame;
 871        try {
 872            metadataRetriever.setDataSource(file.getAbsolutePath());
 873            frame = metadataRetriever.getFrameAtTime(0);
 874            metadataRetriever.release();
 875            frame = resize(frame, size);
 876        } catch (IOException | RuntimeException e) {
 877            frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
 878            frame.eraseColor(0xff000000);
 879        }
 880        drawOverlay(frame, paintOverlayBlack(frame) ? R.drawable.play_video_black : R.drawable.play_video_white, 0.75f);
 881        return frame;
 882    }
 883
 884    public Uri getTakePhotoUri() {
 885        File file;
 886        if (Config.ONLY_INTERNAL_STORAGE) {
 887            file = new File(mXmppConnectionService.getCacheDir().getAbsolutePath(), "Camera/IMG_" + this.IMAGE_DATE_FORMAT.format(new Date()) + ".jpg");
 888        } else {
 889            file = new File(getTakePhotoPath() + "IMG_" + this.IMAGE_DATE_FORMAT.format(new Date()) + ".jpg");
 890        }
 891        file.getParentFile().mkdirs();
 892        return getUriForFile(mXmppConnectionService, file);
 893    }
 894
 895    public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
 896
 897        final Avatar uncompressAvatar = getUncompressedAvatar(image);
 898        if (uncompressAvatar != null && uncompressAvatar.image.length() <= Config.AVATAR_CHAR_LIMIT) {
 899            return uncompressAvatar;
 900        }
 901        if (uncompressAvatar != null) {
 902            Log.d(Config.LOGTAG, "uncompressed avatar exceeded char limit by " + (uncompressAvatar.image.length() - Config.AVATAR_CHAR_LIMIT));
 903        }
 904
 905        Bitmap bm = cropCenterSquare(image, size);
 906        if (bm == null) {
 907            return null;
 908        }
 909        if (hasAlpha(bm)) {
 910            Log.d(Config.LOGTAG, "alpha in avatar detected; uploading as PNG");
 911            bm.recycle();
 912            bm = cropCenterSquare(image, 96);
 913            return getPepAvatar(bm, Bitmap.CompressFormat.PNG, 100);
 914        }
 915        return getPepAvatar(bm, format, 100);
 916    }
 917
 918    private Avatar getUncompressedAvatar(Uri uri) {
 919        Bitmap bitmap = null;
 920        try {
 921            bitmap = BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
 922            return getPepAvatar(bitmap, Bitmap.CompressFormat.PNG, 100);
 923        } catch (Exception e) {
 924            return null;
 925        } finally {
 926            if (bitmap != null) {
 927                bitmap.recycle();
 928            }
 929        }
 930    }
 931
 932    private Avatar getPepAvatar(Bitmap bitmap, Bitmap.CompressFormat format, int quality) {
 933        try {
 934            ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
 935            Base64OutputStream mBase64OutputStream = new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
 936            MessageDigest digest = MessageDigest.getInstance("SHA-1");
 937            DigestOutputStream mDigestOutputStream = new DigestOutputStream(mBase64OutputStream, digest);
 938            if (!bitmap.compress(format, quality, mDigestOutputStream)) {
 939                return null;
 940            }
 941            mDigestOutputStream.flush();
 942            mDigestOutputStream.close();
 943            long chars = mByteArrayOutputStream.size();
 944            if (format != Bitmap.CompressFormat.PNG && quality >= 50 && chars >= Config.AVATAR_CHAR_LIMIT) {
 945                int q = quality - 2;
 946                Log.d(Config.LOGTAG, "avatar char length was " + chars + " reducing quality to " + q);
 947                return getPepAvatar(bitmap, format, q);
 948            }
 949            Log.d(Config.LOGTAG, "settled on char length " + chars + " with quality=" + quality);
 950            final Avatar avatar = new Avatar();
 951            avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
 952            avatar.image = new String(mByteArrayOutputStream.toByteArray());
 953            if (format.equals(Bitmap.CompressFormat.WEBP)) {
 954                avatar.type = "image/webp";
 955            } else if (format.equals(Bitmap.CompressFormat.JPEG)) {
 956                avatar.type = "image/jpeg";
 957            } else if (format.equals(Bitmap.CompressFormat.PNG)) {
 958                avatar.type = "image/png";
 959            }
 960            avatar.width = bitmap.getWidth();
 961            avatar.height = bitmap.getHeight();
 962            return avatar;
 963        } catch (OutOfMemoryError e) {
 964            Log.d(Config.LOGTAG,"unable to convert avatar to base64 due to low memory");
 965            return null;
 966        } catch (Exception e) {
 967            return null;
 968        }
 969    }
 970
 971    public Avatar getStoredPepAvatar(String hash) {
 972        if (hash == null) {
 973            return null;
 974        }
 975        Avatar avatar = new Avatar();
 976        File file = new File(getAvatarPath(hash));
 977        FileInputStream is = null;
 978        try {
 979            avatar.size = file.length();
 980            BitmapFactory.Options options = new BitmapFactory.Options();
 981            options.inJustDecodeBounds = true;
 982            BitmapFactory.decodeFile(file.getAbsolutePath(), options);
 983            is = new FileInputStream(file);
 984            ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
 985            Base64OutputStream mBase64OutputStream = new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
 986            MessageDigest digest = MessageDigest.getInstance("SHA-1");
 987            DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
 988            byte[] buffer = new byte[4096];
 989            int length;
 990            while ((length = is.read(buffer)) > 0) {
 991                os.write(buffer, 0, length);
 992            }
 993            os.flush();
 994            os.close();
 995            avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
 996            avatar.image = new String(mByteArrayOutputStream.toByteArray());
 997            avatar.height = options.outHeight;
 998            avatar.width = options.outWidth;
 999            avatar.type = options.outMimeType;
1000            return avatar;
1001        } catch (NoSuchAlgorithmException | IOException e) {
1002            return null;
1003        } finally {
1004            close(is);
1005        }
1006    }
1007
1008    public boolean isAvatarCached(Avatar avatar) {
1009        File file = new File(getAvatarPath(avatar.getFilename()));
1010        return file.exists();
1011    }
1012
1013    public boolean save(final Avatar avatar) {
1014        File file;
1015        if (isAvatarCached(avatar)) {
1016            file = new File(getAvatarPath(avatar.getFilename()));
1017            avatar.size = file.length();
1018        } else {
1019            file = new File(mXmppConnectionService.getCacheDir().getAbsolutePath() + "/" + UUID.randomUUID().toString());
1020            if (file.getParentFile().mkdirs()) {
1021                Log.d(Config.LOGTAG, "created cache directory");
1022            }
1023            OutputStream os = null;
1024            try {
1025                if (!file.createNewFile()) {
1026                    Log.d(Config.LOGTAG, "unable to create temporary file " + file.getAbsolutePath());
1027                }
1028                os = new FileOutputStream(file);
1029                MessageDigest digest = MessageDigest.getInstance("SHA-1");
1030                digest.reset();
1031                DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
1032                final byte[] bytes = avatar.getImageAsBytes();
1033                mDigestOutputStream.write(bytes);
1034                mDigestOutputStream.flush();
1035                mDigestOutputStream.close();
1036                String sha1sum = CryptoHelper.bytesToHex(digest.digest());
1037                if (sha1sum.equals(avatar.sha1sum)) {
1038                    File outputFile = new File(getAvatarPath(avatar.getFilename()));
1039                    if (outputFile.getParentFile().mkdirs()) {
1040                        Log.d(Config.LOGTAG, "created avatar directory");
1041                    }
1042                    String filename = getAvatarPath(avatar.getFilename());
1043                    if (!file.renameTo(new File(filename))) {
1044                        Log.d(Config.LOGTAG, "unable to rename " + file.getAbsolutePath() + " to " + outputFile);
1045                        return false;
1046                    }
1047                } else {
1048                    Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
1049                    if (!file.delete()) {
1050                        Log.d(Config.LOGTAG, "unable to delete temporary file");
1051                    }
1052                    return false;
1053                }
1054                avatar.size = bytes.length;
1055            } catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
1056                return false;
1057            } finally {
1058                close(os);
1059            }
1060        }
1061        return true;
1062    }
1063
1064    private String getAvatarPath(String avatar) {
1065        return mXmppConnectionService.getFilesDir().getAbsolutePath() + "/avatars/" + avatar;
1066    }
1067
1068    public Uri getAvatarUri(String avatar) {
1069        return Uri.parse("file:" + getAvatarPath(avatar));
1070    }
1071
1072    public Bitmap cropCenterSquare(Uri image, int size) {
1073        if (image == null) {
1074            return null;
1075        }
1076        InputStream is = null;
1077        try {
1078            BitmapFactory.Options options = new BitmapFactory.Options();
1079            options.inSampleSize = calcSampleSize(image, size);
1080            is = mXmppConnectionService.getContentResolver().openInputStream(image);
1081            if (is == null) {
1082                return null;
1083            }
1084            Bitmap input = BitmapFactory.decodeStream(is, null, options);
1085            if (input == null) {
1086                return null;
1087            } else {
1088                input = rotate(input, getRotation(image));
1089                return cropCenterSquare(input, size);
1090            }
1091        } catch (FileNotFoundException | SecurityException e) {
1092            Log.d(Config.LOGTAG,"unable to open file "+image.toString(), e);
1093            return null;
1094        } finally {
1095            close(is);
1096        }
1097    }
1098
1099    public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
1100        if (image == null) {
1101            return null;
1102        }
1103        InputStream is = null;
1104        try {
1105            BitmapFactory.Options options = new BitmapFactory.Options();
1106            options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
1107            is = mXmppConnectionService.getContentResolver().openInputStream(image);
1108            if (is == null) {
1109                return null;
1110            }
1111            Bitmap source = BitmapFactory.decodeStream(is, null, options);
1112            if (source == null) {
1113                return null;
1114            }
1115            int sourceWidth = source.getWidth();
1116            int sourceHeight = source.getHeight();
1117            float xScale = (float) newWidth / sourceWidth;
1118            float yScale = (float) newHeight / sourceHeight;
1119            float scale = Math.max(xScale, yScale);
1120            float scaledWidth = scale * sourceWidth;
1121            float scaledHeight = scale * sourceHeight;
1122            float left = (newWidth - scaledWidth) / 2;
1123            float top = (newHeight - scaledHeight) / 2;
1124
1125            RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
1126            Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
1127            Canvas canvas = new Canvas(dest);
1128            canvas.drawBitmap(source, null, targetRect, createAntiAliasingPaint());
1129            if (source.isRecycled()) {
1130                source.recycle();
1131            }
1132            return dest;
1133        } catch (SecurityException e) {
1134            return null; //android 6.0 with revoked permissions for example
1135        } catch (FileNotFoundException e) {
1136            return null;
1137        } finally {
1138            close(is);
1139        }
1140    }
1141
1142    public Bitmap cropCenterSquare(Bitmap input, int size) {
1143        int w = input.getWidth();
1144        int h = input.getHeight();
1145
1146        float scale = Math.max((float) size / h, (float) size / w);
1147
1148        float outWidth = scale * w;
1149        float outHeight = scale * h;
1150        float left = (size - outWidth) / 2;
1151        float top = (size - outHeight) / 2;
1152        RectF target = new RectF(left, top, left + outWidth, top + outHeight);
1153
1154        Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1155        Canvas canvas = new Canvas(output);
1156        canvas.drawBitmap(input, null, target, createAntiAliasingPaint());
1157        if (!input.isRecycled()) {
1158            input.recycle();
1159        }
1160        return output;
1161    }
1162
1163    private int calcSampleSize(Uri image, int size) throws FileNotFoundException, SecurityException {
1164        BitmapFactory.Options options = new BitmapFactory.Options();
1165        options.inJustDecodeBounds = true;
1166        BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(image), null, options);
1167        return calcSampleSize(options, size);
1168    }
1169
1170    public void updateFileParams(Message message) {
1171        updateFileParams(message, null);
1172    }
1173
1174    public void updateFileParams(Message message, URL url) {
1175        DownloadableFile file = getFile(message);
1176        final String mime = file.getMimeType();
1177        boolean image = message.getType() == Message.TYPE_IMAGE || (mime != null && mime.startsWith("image/"));
1178        boolean video = mime != null && mime.startsWith("video/");
1179        boolean audio = mime != null && mime.startsWith("audio/");
1180        final StringBuilder body = new StringBuilder();
1181        if (url != null) {
1182            body.append(url.toString());
1183        }
1184        body.append('|').append(file.getSize());
1185        if (image || video) {
1186            try {
1187                Dimensions dimensions = image ? getImageDimensions(file) : getVideoDimensions(file);
1188                if (dimensions.valid()) {
1189                    body.append('|').append(dimensions.width).append('|').append(dimensions.height);
1190                }
1191            } catch (NotAVideoFile notAVideoFile) {
1192                Log.d(Config.LOGTAG, "file with mime type " + file.getMimeType() + " was not a video file");
1193                //fall threw
1194            }
1195        } else if (audio) {
1196            body.append("|0|0|").append(getMediaRuntime(file));
1197        }
1198        message.setBody(body.toString());
1199        message.setDeleted(false);
1200    }
1201
1202    public int getMediaRuntime(Uri uri) {
1203        try {
1204            MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
1205            mediaMetadataRetriever.setDataSource(mXmppConnectionService, uri);
1206            return Integer.parseInt(mediaMetadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION));
1207        } catch (RuntimeException e) {
1208            return 0;
1209        }
1210    }
1211
1212    private int getMediaRuntime(File file) {
1213        try {
1214            MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
1215            mediaMetadataRetriever.setDataSource(file.toString());
1216            return Integer.parseInt(mediaMetadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION));
1217        } catch (RuntimeException e) {
1218            return 0;
1219        }
1220    }
1221
1222    private Dimensions getImageDimensions(File file) {
1223        BitmapFactory.Options options = new BitmapFactory.Options();
1224        options.inJustDecodeBounds = true;
1225        BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1226        int rotation = getRotation(file);
1227        boolean rotated = rotation == 90 || rotation == 270;
1228        int imageHeight = rotated ? options.outWidth : options.outHeight;
1229        int imageWidth = rotated ? options.outHeight : options.outWidth;
1230        return new Dimensions(imageHeight, imageWidth);
1231    }
1232
1233    private Dimensions getVideoDimensions(File file) throws NotAVideoFile {
1234        MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1235        try {
1236            metadataRetriever.setDataSource(file.getAbsolutePath());
1237        } catch (RuntimeException e) {
1238            throw new NotAVideoFile(e);
1239        }
1240        return getVideoDimensions(metadataRetriever);
1241    }
1242
1243    public Bitmap getAvatar(String avatar, int size) {
1244        if (avatar == null) {
1245            return null;
1246        }
1247        Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
1248        if (bm == null) {
1249            return null;
1250        }
1251        return bm;
1252    }
1253
1254    public boolean isFileAvailable(Message message) {
1255        return getFile(message).exists();
1256    }
1257
1258    private static class Dimensions {
1259        public final int width;
1260        public final int height;
1261
1262        Dimensions(int height, int width) {
1263            this.width = width;
1264            this.height = height;
1265        }
1266
1267        public int getMin() {
1268            return Math.min(width, height);
1269        }
1270
1271        public boolean valid() {
1272            return width > 0 && height > 0;
1273        }
1274    }
1275
1276    private static class NotAVideoFile extends Exception {
1277        public NotAVideoFile(Throwable t) {
1278            super(t);
1279        }
1280
1281        public NotAVideoFile() {
1282            super();
1283        }
1284    }
1285
1286    public class FileCopyException extends Exception {
1287        private static final long serialVersionUID = -1010013599132881427L;
1288        private int resId;
1289
1290        public FileCopyException(int resId) {
1291            this.resId = resId;
1292        }
1293
1294        public int getResId() {
1295            return resId;
1296        }
1297    }
1298}