package eu.siacs.conversations.persistance; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.security.DigestOutputStream; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Locale; import android.database.Cursor; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Matrix; import android.graphics.RectF; import android.net.Uri; import android.os.Environment; import android.provider.MediaStore; import android.util.Base64; import android.util.Base64OutputStream; import android.util.Log; import eu.siacs.conversations.Config; import eu.siacs.conversations.R; import eu.siacs.conversations.entities.DownloadableFile; import eu.siacs.conversations.entities.Message; import eu.siacs.conversations.services.XmppConnectionService; import eu.siacs.conversations.utils.CryptoHelper; import eu.siacs.conversations.utils.ExifHelper; import eu.siacs.conversations.xmpp.pep.Avatar; public class FileBackend { private static int IMAGE_SIZE = 1920; private SimpleDateFormat imageDateFormat = new SimpleDateFormat( "yyyyMMdd_HHmmssSSS", Locale.US); private XmppConnectionService mXmppConnectionService; public FileBackend(XmppConnectionService service) { this.mXmppConnectionService = service; } public DownloadableFile getFile(Message message) { return getFile(message, true); } public DownloadableFile getFile(Message message, boolean decrypted) { StringBuilder filename = new StringBuilder(); filename.append(getConversationsDirectory()); filename.append(message.getUuid()); if ((decrypted) || (message.getEncryption() == Message.ENCRYPTION_NONE)) { filename.append(".webp"); } else { if (message.getEncryption() == Message.ENCRYPTION_OTR) { filename.append(".webp"); } else { filename.append(".webp.pgp"); } } return new DownloadableFile(filename.toString()); } public static String getConversationsDirectory() { return Environment.getExternalStoragePublicDirectory( Environment.DIRECTORY_PICTURES).getAbsolutePath() + "/Conversations/"; } public Bitmap resize(Bitmap originalBitmap, int size) { int w = originalBitmap.getWidth(); int h = originalBitmap.getHeight(); if (Math.max(w, h) > size) { int scalledW; int scalledH; if (w <= h) { scalledW = (int) (w / ((double) h / size)); scalledH = size; } else { scalledW = size; scalledH = (int) (h / ((double) w / size)); } Bitmap scalledBitmap = Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true); return scalledBitmap; } else { return originalBitmap; } } public Bitmap rotate(Bitmap bitmap, int degree) { int w = bitmap.getWidth(); int h = bitmap.getHeight(); Matrix mtx = new Matrix(); mtx.postRotate(degree); return Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true); } public DownloadableFile copyImageToPrivateStorage(Message message, Uri image) throws ImageCopyException { return this.copyImageToPrivateStorage(message, image, 0); } private DownloadableFile copyImageToPrivateStorage(Message message, Uri image, int sampleSize) throws ImageCopyException { try { InputStream is = mXmppConnectionService.getContentResolver() .openInputStream(image); DownloadableFile file = getFile(message); file.getParentFile().mkdirs(); file.createNewFile(); Bitmap originalBitmap; BitmapFactory.Options options = new BitmapFactory.Options(); int inSampleSize = (int) Math.pow(2, sampleSize); Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize); options.inSampleSize = inSampleSize; originalBitmap = BitmapFactory.decodeStream(is, null, options); is.close(); if (originalBitmap == null) { throw new ImageCopyException(R.string.error_not_an_image_file); } Bitmap scalledBitmap = resize(originalBitmap, IMAGE_SIZE); originalBitmap = null; int rotation = getRotation(image); if (rotation > 0) { scalledBitmap = rotate(scalledBitmap, rotation); } OutputStream os = new FileOutputStream(file); boolean success = scalledBitmap.compress( Bitmap.CompressFormat.WEBP, 75, os); if (!success) { throw new ImageCopyException(R.string.error_compressing_image); } os.flush(); os.close(); long size = file.getSize(); int width = scalledBitmap.getWidth(); int height = scalledBitmap.getHeight(); message.setBody(Long.toString(size) + ',' + width + ',' + height); return file; } catch (FileNotFoundException e) { throw new ImageCopyException(R.string.error_file_not_found); } catch (IOException e) { throw new ImageCopyException(R.string.error_io_exception); } catch (SecurityException e) { throw new ImageCopyException( R.string.error_security_exception_during_image_copy); } catch (OutOfMemoryError e) { ++sampleSize; if (sampleSize <= 3) { return copyImageToPrivateStorage(message, image, sampleSize); } else { throw new ImageCopyException(R.string.error_out_of_memory); } } } private int getRotation(Uri image) { try { InputStream is = mXmppConnectionService.getContentResolver() .openInputStream(image); return ExifHelper.getOrientation(is); } catch (FileNotFoundException e) { return 0; } } public Bitmap getImageFromMessage(Message message) { return BitmapFactory.decodeFile(getFile(message).getAbsolutePath()); } public Bitmap getThumbnail(Message message, int size, boolean cacheOnly) throws FileNotFoundException { Bitmap thumbnail = mXmppConnectionService.getBitmapCache().get( message.getUuid()); if ((thumbnail == null) && (!cacheOnly)) { File file = getFile(message); BitmapFactory.Options options = new BitmapFactory.Options(); options.inSampleSize = calcSampleSize(file, size); Bitmap fullsize = BitmapFactory.decodeFile(file.getAbsolutePath(), options); if (fullsize == null) { throw new FileNotFoundException(); } thumbnail = resize(fullsize, size); this.mXmppConnectionService.getBitmapCache().put(message.getUuid(), thumbnail); } return thumbnail; } public Uri getTakePhotoUri() { StringBuilder pathBuilder = new StringBuilder(); pathBuilder.append(Environment .getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM)); pathBuilder.append('/'); pathBuilder.append("Camera"); pathBuilder.append('/'); pathBuilder.append("IMG_" + this.imageDateFormat.format(new Date()) + ".jpg"); Uri uri = Uri.parse("file://" + pathBuilder.toString()); File file = new File(uri.toString()); file.getParentFile().mkdirs(); return uri; } public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) { try { Avatar avatar = new Avatar(); Bitmap bm = cropCenterSquare(image, size); if (bm == null) { return null; } ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream(); Base64OutputStream mBase64OutputSttream = new Base64OutputStream( mByteArrayOutputStream, Base64.DEFAULT); MessageDigest digest = MessageDigest.getInstance("SHA-1"); DigestOutputStream mDigestOutputStream = new DigestOutputStream( mBase64OutputSttream, digest); if (!bm.compress(format, 75, mDigestOutputStream)) { return null; } mDigestOutputStream.flush(); mDigestOutputStream.close(); avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest()); avatar.image = new String(mByteArrayOutputStream.toByteArray()); return avatar; } catch (NoSuchAlgorithmException e) { return null; } catch (IOException e) { return null; } } public boolean isAvatarCached(Avatar avatar) { File file = new File(getAvatarPath(avatar.getFilename())); return file.exists(); } public boolean save(Avatar avatar) { if (isAvatarCached(avatar)) { return true; } String filename = getAvatarPath(avatar.getFilename()); File file = new File(filename + ".tmp"); file.getParentFile().mkdirs(); try { file.createNewFile(); FileOutputStream mFileOutputStream = new FileOutputStream(file); MessageDigest digest = MessageDigest.getInstance("SHA-1"); digest.reset(); DigestOutputStream mDigestOutputStream = new DigestOutputStream( mFileOutputStream, digest); mDigestOutputStream.write(avatar.getImageAsBytes()); mDigestOutputStream.flush(); mDigestOutputStream.close(); avatar.size = file.length(); String sha1sum = CryptoHelper.bytesToHex(digest.digest()); if (sha1sum.equals(avatar.sha1sum)) { file.renameTo(new File(filename)); return true; } else { Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner); file.delete(); return false; } } catch (FileNotFoundException e) { return false; } catch (IOException e) { return false; } catch (NoSuchAlgorithmException e) { return false; } } public String getAvatarPath(String avatar) { return mXmppConnectionService.getFilesDir().getAbsolutePath() + "/avatars/" + avatar; } public Uri getAvatarUri(String avatar) { return Uri.parse("file:" + getAvatarPath(avatar)); } public Bitmap cropCenterSquare(Uri image, int size) { try { BitmapFactory.Options options = new BitmapFactory.Options(); options.inSampleSize = calcSampleSize(image, size); InputStream is = mXmppConnectionService.getContentResolver() .openInputStream(image); Bitmap input = BitmapFactory.decodeStream(is, null, options); if (input == null) { return null; } else { int rotation = getRotation(image); if (rotation > 0) { input = rotate(input, rotation); } return cropCenterSquare(input, size); } } catch (FileNotFoundException e) { return null; } } public Bitmap cropCenter(Uri image, int newHeight, int newWidth) { try { BitmapFactory.Options options = new BitmapFactory.Options(); options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth)); InputStream is = mXmppConnectionService.getContentResolver() .openInputStream(image); Bitmap source = BitmapFactory.decodeStream(is, null, options); int sourceWidth = source.getWidth(); int sourceHeight = source.getHeight(); float xScale = (float) newWidth / sourceWidth; float yScale = (float) newHeight / sourceHeight; float scale = Math.max(xScale, yScale); float scaledWidth = scale * sourceWidth; float scaledHeight = scale * sourceHeight; float left = (newWidth - scaledWidth) / 2; float top = (newHeight - scaledHeight) / 2; RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight); Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, source.getConfig()); Canvas canvas = new Canvas(dest); canvas.drawBitmap(source, null, targetRect, null); return dest; } catch (FileNotFoundException e) { return null; } } public Bitmap cropCenterSquare(Bitmap input, int size) { int w = input.getWidth(); int h = input.getHeight(); float scale = Math.max((float) size / h, (float) size / w); float outWidth = scale * w; float outHeight = scale * h; float left = (size - outWidth) / 2; float top = (size - outHeight) / 2; RectF target = new RectF(left, top, left + outWidth, top + outHeight); Bitmap output = Bitmap.createBitmap(size, size, input.getConfig()); Canvas canvas = new Canvas(output); canvas.drawBitmap(input, null, target, null); return output; } private int calcSampleSize(Uri image, int size) throws FileNotFoundException { BitmapFactory.Options options = new BitmapFactory.Options(); options.inJustDecodeBounds = true; BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver() .openInputStream(image), null, options); return calcSampleSize(options, size); } private int calcSampleSize(File image, int size) { BitmapFactory.Options options = new BitmapFactory.Options(); options.inJustDecodeBounds = true; BitmapFactory.decodeFile(image.getAbsolutePath(), options); return calcSampleSize(options, size); } private int calcSampleSize(BitmapFactory.Options options, int size) { int height = options.outHeight; int width = options.outWidth; int inSampleSize = 1; if (height > size || width > size) { int halfHeight = height / 2; int halfWidth = width / 2; while ((halfHeight / inSampleSize) > size && (halfWidth / inSampleSize) > size) { inSampleSize *= 2; } } return inSampleSize; } public Uri getJingleFileUri(Message message) { File file = getFile(message); return Uri.parse("file://" + file.getAbsolutePath()); } public class ImageCopyException extends Exception { private static final long serialVersionUID = -1010013599132881427L; private int resId; public ImageCopyException(int resId) { this.resId = resId; } public int getResId() { return resId; } } public Bitmap getAvatar(String avatar, int size) { if (avatar == null) { return null; } Bitmap bm = cropCenter(getAvatarUri(avatar), size, size); if (bm == null) { return null; } return bm; } public boolean isFileAvailable(Message message) { return getFile(message).exists(); } }