339 lines
10 KiB
Java
339 lines
10 KiB
Java
package eu.siacs.conversations.persistance;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.security.DigestOutputStream;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.graphics.Canvas;
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import android.graphics.Matrix;
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import android.graphics.RectF;
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import android.media.ExifInterface;
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import android.net.Uri;
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import android.util.Base64;
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import android.util.Base64OutputStream;
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import android.util.Log;
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import android.util.LruCache;
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import eu.siacs.conversations.R;
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import eu.siacs.conversations.entities.Conversation;
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import eu.siacs.conversations.entities.Message;
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import eu.siacs.conversations.utils.CryptoHelper;
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import eu.siacs.conversations.xmpp.jingle.JingleFile;
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import eu.siacs.conversations.xmpp.pep.Avatar;
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public class FileBackend {
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private static int IMAGE_SIZE = 1920;
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private Context context;
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private LruCache<String, Bitmap> thumbnailCache;
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public FileBackend(Context context) {
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this.context = context;
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int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
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int cacheSize = maxMemory / 8;
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thumbnailCache = new LruCache<String, Bitmap>(cacheSize) {
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@Override
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protected int sizeOf(String key, Bitmap bitmap) {
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return bitmap.getByteCount() / 1024;
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}
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};
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}
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public LruCache<String, Bitmap> getThumbnailCache() {
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return thumbnailCache;
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}
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public JingleFile getJingleFile(Message message) {
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return getJingleFile(message, true);
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}
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public JingleFile getJingleFile(Message message, boolean decrypted) {
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Conversation conversation = message.getConversation();
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String prefix = context.getFilesDir().getAbsolutePath();
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String path = prefix + "/" + conversation.getAccount().getJid() + "/"
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+ conversation.getContactJid();
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String filename;
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if ((decrypted) || (message.getEncryption() == Message.ENCRYPTION_NONE)) {
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filename = message.getUuid() + ".webp";
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} else {
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if (message.getEncryption() == Message.ENCRYPTION_OTR) {
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filename = message.getUuid() + ".webp";
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} else {
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filename = message.getUuid() + ".webp.pgp";
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}
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}
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return new JingleFile(path + "/" + filename);
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}
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public Bitmap resize(Bitmap originalBitmap, int size) {
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int w = originalBitmap.getWidth();
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int h = originalBitmap.getHeight();
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if (Math.max(w, h) > size) {
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int scalledW;
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int scalledH;
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if (w <= h) {
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scalledW = (int) (w / ((double) h / size));
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scalledH = size;
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} else {
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scalledW = size;
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scalledH = (int) (h / ((double) w / size));
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}
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Bitmap scalledBitmap = Bitmap.createScaledBitmap(originalBitmap,
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scalledW, scalledH, true);
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return scalledBitmap;
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} else {
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return originalBitmap;
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}
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}
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public Bitmap rotate(Bitmap bitmap, int degree) {
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int w = bitmap.getWidth();
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int h = bitmap.getHeight();
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Matrix mtx = new Matrix();
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mtx.postRotate(degree);
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return Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true);
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}
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public JingleFile copyImageToPrivateStorage(Message message, Uri image)
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throws ImageCopyException {
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return this.copyImageToPrivateStorage(message, image, 0);
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}
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private JingleFile copyImageToPrivateStorage(Message message, Uri image,
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int sampleSize) throws ImageCopyException {
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try {
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InputStream is;
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if (image != null) {
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is = context.getContentResolver().openInputStream(image);
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} else {
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is = new FileInputStream(getIncomingFile());
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image = getIncomingUri();
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}
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JingleFile file = getJingleFile(message);
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file.getParentFile().mkdirs();
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file.createNewFile();
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Bitmap originalBitmap;
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BitmapFactory.Options options = new BitmapFactory.Options();
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int inSampleSize = (int) Math.pow(2, sampleSize);
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Log.d("xmppService", "reading bitmap with sample size "
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+ inSampleSize);
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options.inSampleSize = inSampleSize;
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originalBitmap = BitmapFactory.decodeStream(is, null, options);
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is.close();
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if (originalBitmap == null) {
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throw new ImageCopyException(R.string.error_not_an_image_file);
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}
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if (image == null) {
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getIncomingFile().delete();
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}
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Bitmap scalledBitmap = resize(originalBitmap, IMAGE_SIZE);
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originalBitmap = null;
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ExifInterface exif = new ExifInterface(image.toString());
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if (exif.getAttribute(ExifInterface.TAG_ORIENTATION)
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.equalsIgnoreCase("6")) {
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scalledBitmap = rotate(scalledBitmap, 90);
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} else if (exif.getAttribute(ExifInterface.TAG_ORIENTATION)
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.equalsIgnoreCase("8")) {
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scalledBitmap = rotate(scalledBitmap, 270);
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} else if (exif.getAttribute(ExifInterface.TAG_ORIENTATION)
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.equalsIgnoreCase("3")) {
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scalledBitmap = rotate(scalledBitmap, 180);
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}
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OutputStream os = new FileOutputStream(file);
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boolean success = scalledBitmap.compress(
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Bitmap.CompressFormat.WEBP, 75, os);
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if (!success) {
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throw new ImageCopyException(R.string.error_compressing_image);
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}
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os.flush();
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os.close();
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long size = file.getSize();
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int width = scalledBitmap.getWidth();
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int height = scalledBitmap.getHeight();
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message.setBody("" + size + "," + width + "," + height);
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return file;
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} catch (FileNotFoundException e) {
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throw new ImageCopyException(R.string.error_file_not_found);
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} catch (IOException e) {
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throw new ImageCopyException(R.string.error_io_exception);
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} catch (SecurityException e) {
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throw new ImageCopyException(
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R.string.error_security_exception_during_image_copy);
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} catch (OutOfMemoryError e) {
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++sampleSize;
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if (sampleSize <= 3) {
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return copyImageToPrivateStorage(message, image, sampleSize);
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} else {
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throw new ImageCopyException(R.string.error_out_of_memory);
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}
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}
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}
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public Bitmap getImageFromMessage(Message message) {
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return BitmapFactory.decodeFile(getJingleFile(message)
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.getAbsolutePath());
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}
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public Bitmap getThumbnail(Message message, int size, boolean cacheOnly)
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throws FileNotFoundException {
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Bitmap thumbnail = thumbnailCache.get(message.getUuid());
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if ((thumbnail == null) && (!cacheOnly)) {
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Bitmap fullsize = BitmapFactory.decodeFile(getJingleFile(message)
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.getAbsolutePath());
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if (fullsize == null) {
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throw new FileNotFoundException();
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}
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thumbnail = resize(fullsize, size);
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this.thumbnailCache.put(message.getUuid(), thumbnail);
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}
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return thumbnail;
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}
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public void removeFiles(Conversation conversation) {
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String prefix = context.getFilesDir().getAbsolutePath();
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String path = prefix + "/" + conversation.getAccount().getJid() + "/"
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+ conversation.getContactJid();
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File file = new File(path);
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try {
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this.deleteFile(file);
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} catch (IOException e) {
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Log.d("xmppService",
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"error deleting file: " + file.getAbsolutePath());
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}
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}
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private void deleteFile(File f) throws IOException {
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if (f.isDirectory()) {
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for (File c : f.listFiles())
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deleteFile(c);
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}
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f.delete();
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}
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public File getIncomingFile() {
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return new File(context.getFilesDir().getAbsolutePath() + "/incoming");
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}
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public Uri getIncomingUri() {
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return Uri.parse(context.getFilesDir().getAbsolutePath() + "/incoming");
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}
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public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
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try {
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Avatar avatar = new Avatar();
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Bitmap bm = cropCenterSquare(image, size);
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ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
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Base64OutputStream mBase64OutputSttream = new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
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MessageDigest digest = MessageDigest.getInstance("SHA-1");
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DigestOutputStream mDigestOutputStream = new DigestOutputStream(mBase64OutputSttream, digest);
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bm.compress(format, 75, mDigestOutputStream);
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avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
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avatar.image = new String(mByteArrayOutputStream.toByteArray());
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return avatar;
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} catch (NoSuchAlgorithmException e) {
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return null;
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}
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}
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public void save(Avatar avatar) {
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String path = context.getFilesDir().getAbsolutePath() + "/avatars/";
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File file = new File(path+"/"+avatar.getFilename());
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file.getParentFile().mkdirs();
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Log.d("xmppService",file.getAbsolutePath());
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try {
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file.createNewFile();
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FileOutputStream mFileOutputStream = new FileOutputStream(file);
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MessageDigest digest = MessageDigest.getInstance("SHA-1");
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DigestOutputStream mDigestOutputStream = new DigestOutputStream(mFileOutputStream, digest);
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mDigestOutputStream.write(avatar.getImageAsBytes());
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mDigestOutputStream.flush();
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mDigestOutputStream.close();
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avatar.size = file.length();
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} catch (FileNotFoundException e) {
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} catch (IOException e) {
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Log.d("xmppService",e.getMessage());
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} catch (NoSuchAlgorithmException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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}
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}
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public Bitmap cropCenterSquare(Uri image, int size) {
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try {
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BitmapFactory.Options options = new BitmapFactory.Options();
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options.inSampleSize = calcSampleSize(image, size);
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InputStream is = context.getContentResolver()
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.openInputStream(image);
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Bitmap input = BitmapFactory.decodeStream(is, null, options);
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int w = input.getWidth();
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int h = input.getHeight();
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float scale = Math.max((float) size / h, (float) size / w);
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float outWidth = scale * w;
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float outHeight = scale * h;
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float left = (size - outWidth) / 2;
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float top = (size - outHeight) / 2;
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RectF target = new RectF(left, top, left + outWidth, top
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+ outHeight);
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Bitmap output = Bitmap.createBitmap(size, size, input.getConfig());
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Canvas canvas = new Canvas(output);
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canvas.drawBitmap(input, null, target, null);
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return output;
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} catch (FileNotFoundException e) {
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return null;
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}
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}
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private int calcSampleSize(Uri image, int size)
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throws FileNotFoundException {
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BitmapFactory.Options options = new BitmapFactory.Options();
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options.inJustDecodeBounds = true;
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BitmapFactory.decodeStream(context.getContentResolver()
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.openInputStream(image), null, options);
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int height = options.outHeight;
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int width = options.outWidth;
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int inSampleSize = 1;
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if (height > size || width > size) {
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int halfHeight = height / 2;
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int halfWidth = width / 2;
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while ((halfHeight / inSampleSize) > size
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&& (halfWidth / inSampleSize) > size) {
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inSampleSize *= 2;
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}
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}
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return inSampleSize;
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}
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public class ImageCopyException extends Exception {
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private static final long serialVersionUID = -1010013599132881427L;
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private int resId;
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public ImageCopyException(int resId) {
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this.resId = resId;
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}
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public int getResId() {
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return resId;
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}
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}
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}
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