448 lines
14 KiB
Java
448 lines
14 KiB
Java
package eu.siacs.conversations.persistance;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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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 java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.Locale;
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import android.database.Cursor;
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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.net.Uri;
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import android.os.Environment;
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import android.provider.MediaStore;
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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 eu.siacs.conversations.Config;
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import eu.siacs.conversations.R;
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import eu.siacs.conversations.entities.DownloadableFile;
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import eu.siacs.conversations.entities.Message;
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import eu.siacs.conversations.services.XmppConnectionService;
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import eu.siacs.conversations.utils.CryptoHelper;
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import eu.siacs.conversations.utils.ExifHelper;
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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 SimpleDateFormat imageDateFormat = new SimpleDateFormat(
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"yyyyMMdd_HHmmssSSS", Locale.US);
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private XmppConnectionService mXmppConnectionService;
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public FileBackend(XmppConnectionService service) {
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this.mXmppConnectionService = service;
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}
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public DownloadableFile getFile(Message message) {
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return getFile(message, true);
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}
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public DownloadableFile getFile(Message message, boolean decrypted) {
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StringBuilder filename = new StringBuilder();
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filename.append(getConversationsDirectory());
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filename.append(message.getUuid());
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if ((decrypted) || (message.getEncryption() == Message.ENCRYPTION_NONE)) {
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filename.append(".webp");
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} else {
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if (message.getEncryption() == Message.ENCRYPTION_OTR) {
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filename.append(".webp");
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} else {
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filename.append(".webp.pgp");
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}
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}
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return new DownloadableFile(filename.toString());
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}
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public static String getConversationsDirectory() {
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return Environment.getExternalStoragePublicDirectory(
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Environment.DIRECTORY_PICTURES).getAbsolutePath()
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+ "/Conversations/";
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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 DownloadableFile 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 DownloadableFile copyImageToPrivateStorage(Message message,
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Uri image, int sampleSize) throws ImageCopyException {
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try {
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InputStream is = mXmppConnectionService.getContentResolver()
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.openInputStream(image);
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DownloadableFile file = getFile(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(Config.LOGTAG, "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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Bitmap scalledBitmap = resize(originalBitmap, IMAGE_SIZE);
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originalBitmap = null;
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int rotation = getRotation(image);
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if (rotation > 0) {
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scalledBitmap = rotate(scalledBitmap, rotation);
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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(Long.toString(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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private int getRotation(Uri image) {
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if ("content".equals(image.getScheme())) {
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try {
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Cursor cursor = mXmppConnectionService
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.getContentResolver()
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.query(image,
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new String[] { MediaStore.Images.ImageColumns.ORIENTATION },
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null, null, null);
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if (cursor.getCount() != 1) {
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return -1;
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}
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cursor.moveToFirst();
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return cursor.getInt(0);
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} catch (IllegalArgumentException e) {
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return -1;
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}
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} else {
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try {
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InputStream is = mXmppConnectionService.getContentResolver()
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.openInputStream(image);
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return ExifHelper.getOrientation(is);
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} catch (FileNotFoundException e) {
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return 0;
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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(getFile(message).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 = mXmppConnectionService.getBitmapCache().get(
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message.getUuid());
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if ((thumbnail == null) && (!cacheOnly)) {
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File file = getFile(message);
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BitmapFactory.Options options = new BitmapFactory.Options();
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options.inSampleSize = calcSampleSize(file, size);
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Bitmap fullsize = BitmapFactory.decodeFile(file.getAbsolutePath(),
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options);
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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.mXmppConnectionService.getBitmapCache().put(message.getUuid(),
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thumbnail);
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}
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return thumbnail;
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}
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public Uri getTakePhotoUri() {
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StringBuilder pathBuilder = new StringBuilder();
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pathBuilder.append(Environment
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.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM));
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pathBuilder.append('/');
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pathBuilder.append("Camera");
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pathBuilder.append('/');
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pathBuilder.append("IMG_" + this.imageDateFormat.format(new Date())
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+ ".jpg");
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Uri uri = Uri.parse("file://" + pathBuilder.toString());
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File file = new File(uri.toString());
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file.getParentFile().mkdirs();
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return uri;
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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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if (bm == null) {
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return null;
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}
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ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
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Base64OutputStream mBase64OutputSttream = new Base64OutputStream(
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mByteArrayOutputStream, Base64.DEFAULT);
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MessageDigest digest = MessageDigest.getInstance("SHA-1");
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DigestOutputStream mDigestOutputStream = new DigestOutputStream(
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mBase64OutputSttream, digest);
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if (!bm.compress(format, 75, mDigestOutputStream)) {
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return null;
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}
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mDigestOutputStream.flush();
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mDigestOutputStream.close();
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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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} catch (IOException e) {
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return null;
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}
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}
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public boolean isAvatarCached(Avatar avatar) {
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File file = new File(getAvatarPath(avatar.getFilename()));
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return file.exists();
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}
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public boolean save(Avatar avatar) {
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if (isAvatarCached(avatar)) {
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return true;
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}
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String filename = getAvatarPath(avatar.getFilename());
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File file = new File(filename + ".tmp");
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file.getParentFile().mkdirs();
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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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digest.reset();
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DigestOutputStream mDigestOutputStream = new DigestOutputStream(
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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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String sha1sum = CryptoHelper.bytesToHex(digest.digest());
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if (sha1sum.equals(avatar.sha1sum)) {
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file.renameTo(new File(filename));
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return true;
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} else {
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Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
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file.delete();
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return false;
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}
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} catch (FileNotFoundException e) {
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return false;
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} catch (IOException e) {
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return false;
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} catch (NoSuchAlgorithmException e) {
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return false;
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}
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}
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public String getAvatarPath(String avatar) {
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return mXmppConnectionService.getFilesDir().getAbsolutePath()
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+ "/avatars/" + avatar;
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}
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public Uri getAvatarUri(String avatar) {
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return Uri.parse("file:" + getAvatarPath(avatar));
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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 = mXmppConnectionService.getContentResolver()
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.openInputStream(image);
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Bitmap input = BitmapFactory.decodeStream(is, null, options);
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if (input == null) {
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return null;
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} else {
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int rotation = getRotation(image);
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if (rotation > 0) {
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input = rotate(input, rotation);
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}
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return cropCenterSquare(input, size);
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}
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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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public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
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try {
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BitmapFactory.Options options = new BitmapFactory.Options();
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options.inSampleSize = calcSampleSize(image,
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Math.max(newHeight, newWidth));
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InputStream is = mXmppConnectionService.getContentResolver()
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.openInputStream(image);
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Bitmap source = BitmapFactory.decodeStream(is, null, options);
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int sourceWidth = source.getWidth();
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int sourceHeight = source.getHeight();
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float xScale = (float) newWidth / sourceWidth;
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float yScale = (float) newHeight / sourceHeight;
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float scale = Math.max(xScale, yScale);
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float scaledWidth = scale * sourceWidth;
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float scaledHeight = scale * sourceHeight;
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float left = (newWidth - scaledWidth) / 2;
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float top = (newHeight - scaledHeight) / 2;
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RectF targetRect = new RectF(left, top, left + scaledWidth, top
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+ scaledHeight);
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Bitmap dest = Bitmap.createBitmap(newWidth, newHeight,
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source.getConfig());
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Canvas canvas = new Canvas(dest);
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canvas.drawBitmap(source, null, targetRect, null);
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return dest;
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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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public Bitmap cropCenterSquare(Bitmap input, int size) {
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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 + 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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}
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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(mXmppConnectionService.getContentResolver()
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.openInputStream(image), null, options);
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return calcSampleSize(options, size);
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}
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private int calcSampleSize(File image, int size) {
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BitmapFactory.Options options = new BitmapFactory.Options();
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options.inJustDecodeBounds = true;
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BitmapFactory.decodeFile(image.getAbsolutePath(), options);
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return calcSampleSize(options, size);
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}
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private int calcSampleSize(BitmapFactory.Options options, int size) {
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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 Uri getJingleFileUri(Message message) {
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File file = getFile(message);
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return Uri.parse("file://" + file.getAbsolutePath());
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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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public Bitmap getAvatar(String avatar, int size) {
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if (avatar == null) {
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return null;
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}
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Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
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if (bm == null) {
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return null;
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}
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return bm;
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}
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public boolean isFileAvailable(Message message) {
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return getFile(message).exists();
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}
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}
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