conversations-classic/src/main/java/eu/siacs/conversations/persistance/FileBackend.java

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Java
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package eu.siacs.conversations.persistance;
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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.util.Base64;
import android.util.Base64OutputStream;
import android.util.Log;
import android.webkit.MimeTypeMap;
import java.io.ByteArrayOutputStream;
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import java.io.Closeable;
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import java.io.File;
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import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.net.URL;
import java.security.DigestOutputStream;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
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import java.text.SimpleDateFormat;
import java.util.Arrays;
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import java.util.Date;
import java.util.Locale;
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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.entities.Transferable;
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import eu.siacs.conversations.services.XmppConnectionService;
import eu.siacs.conversations.utils.CryptoHelper;
import eu.siacs.conversations.utils.ExifHelper;
import eu.siacs.conversations.utils.FileUtils;
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 final SimpleDateFormat imageDateFormat = new SimpleDateFormat("yyyyMMdd_HHmmssSSS", Locale.US);
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private XmppConnectionService mXmppConnectionService;
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public FileBackend(XmppConnectionService service) {
this.mXmppConnectionService = service;
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}
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public DownloadableFile getFile(Message message) {
return getFile(message, true);
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}
public DownloadableFile getFile(Message message, boolean decrypted) {
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final boolean encrypted = !decrypted
&& (message.getEncryption() == Message.ENCRYPTION_PGP
|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
final DownloadableFile file;
String path = message.getRelativeFilePath();
if (path == null) {
path = message.getUuid();
}
if (path.startsWith("/")) {
file = new DownloadableFile(path);
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} else {
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String mime = message.getMimeType();
if (mime != null && mime.startsWith("image")) {
file = new DownloadableFile(getConversationsImageDirectory() + path);
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} else {
file = new DownloadableFile(getConversationsFileDirectory() + path);
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}
}
if (encrypted) {
return new DownloadableFile(getConversationsFileDirectory() + file.getName() + ".pgp");
} else {
return file;
}
}
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public static String getConversationsFileDirectory() {
return Environment.getExternalStorageDirectory().getAbsolutePath()+"/Conversations/";
}
public static String getConversationsImageDirectory() {
return Environment.getExternalStoragePublicDirectory(
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Environment.DIRECTORY_PICTURES).getAbsolutePath()
+ "/Conversations/";
}
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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));
}
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Bitmap result = Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true);
if (originalBitmap != null && !originalBitmap.isRecycled()) {
originalBitmap.recycle();
}
return result;
} else {
return originalBitmap;
}
}
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public Bitmap rotate(Bitmap bitmap, int degree) {
int w = bitmap.getWidth();
int h = bitmap.getHeight();
Matrix mtx = new Matrix();
mtx.postRotate(degree);
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Bitmap result = Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true);
if (bitmap != null && !bitmap.isRecycled()) {
bitmap.recycle();
}
return result;
}
public boolean useImageAsIs(Uri uri) {
String path = getOriginalPath(uri);
if (path == null) {
return false;
}
File file = new File(path);
long size = file.length();
if (size == 0 || size >= 524288 ) {
return false;
}
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
try {
BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(uri), null, options);
if (options == null || options.outMimeType == null || options.outHeight <= 0 || options.outWidth <= 0) {
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return false;
}
return (options.outWidth <= Config.IMAGE_SIZE && options.outHeight <= Config.IMAGE_SIZE && options.outMimeType.contains(Config.IMAGE_FORMAT.name().toLowerCase()));
} catch (FileNotFoundException e) {
return false;
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}
}
public String getOriginalPath(Uri uri) {
Log.d(Config.LOGTAG,"get original path for uri: "+uri.toString());
return FileUtils.getPath(mXmppConnectionService,uri);
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}
public DownloadableFile copyFileToPrivateStorage(Message message, Uri uri) throws FileCopyException {
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Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage");
String mime = mXmppConnectionService.getContentResolver().getType(uri);
String extension = MimeTypeMap.getSingleton().getExtensionFromMimeType(mime);
message.setRelativeFilePath(message.getUuid() + "." + extension);
DownloadableFile file = mXmppConnectionService.getFileBackend().getFile(message);
file.getParentFile().mkdirs();
OutputStream os = null;
InputStream is = null;
try {
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file.createNewFile();
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os = new FileOutputStream(file);
is = mXmppConnectionService.getContentResolver().openInputStream(uri);
byte[] buffer = new byte[1024];
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int length;
while ((length = is.read(buffer)) > 0) {
os.write(buffer, 0, length);
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}
os.flush();
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} catch(FileNotFoundException e) {
throw new FileCopyException(R.string.error_file_not_found);
} catch (IOException e) {
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e.printStackTrace();
throw new FileCopyException(R.string.error_io_exception);
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} finally {
close(os);
close(is);
}
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Log.d(Config.LOGTAG, "output file name " + mXmppConnectionService.getFileBackend().getFile(message));
return file;
}
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public DownloadableFile copyImageToPrivateStorage(Message message, Uri image)
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throws FileCopyException {
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return this.copyImageToPrivateStorage(message, image, 0);
}
private DownloadableFile copyImageToPrivateStorage(Message message,Uri image, int sampleSize) throws FileCopyException {
switch(Config.IMAGE_FORMAT) {
case JPEG:
message.setRelativeFilePath(message.getUuid()+".jpg");
break;
case PNG:
message.setRelativeFilePath(message.getUuid()+".png");
break;
case WEBP:
message.setRelativeFilePath(message.getUuid()+".webp");
break;
}
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DownloadableFile file = getFile(message);
file.getParentFile().mkdirs();
InputStream is = null;
OutputStream os = null;
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try {
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file.createNewFile();
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is = mXmppConnectionService.getContentResolver().openInputStream(image);
os = new FileOutputStream(file);
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Bitmap originalBitmap;
BitmapFactory.Options options = new BitmapFactory.Options();
int inSampleSize = (int) Math.pow(2, sampleSize);
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Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
options.inSampleSize = inSampleSize;
originalBitmap = BitmapFactory.decodeStream(is, null, options);
is.close();
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if (originalBitmap == null) {
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throw new FileCopyException(R.string.error_not_an_image_file);
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}
Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
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int rotation = getRotation(image);
if (rotation > 0) {
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scaledBitmap = rotate(scaledBitmap, rotation);
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}
boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, Config.IMAGE_QUALITY, os);
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if (!success) {
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throw new FileCopyException(R.string.error_compressing_image);
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}
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os.flush();
long size = file.getSize();
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int width = scaledBitmap.getWidth();
int height = scaledBitmap.getHeight();
message.setBody(Long.toString(size) + '|' + width + '|' + height);
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return file;
} catch (FileNotFoundException e) {
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throw new FileCopyException(R.string.error_file_not_found);
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} catch (IOException e) {
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e.printStackTrace();
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throw new FileCopyException(R.string.error_io_exception);
} catch (SecurityException e) {
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throw new FileCopyException(R.string.error_security_exception_during_image_copy);
} catch (OutOfMemoryError e) {
++sampleSize;
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if (sampleSize <= 3) {
return copyImageToPrivateStorage(message, image, sampleSize);
} else {
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throw new FileCopyException(R.string.error_out_of_memory);
}
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} catch (NullPointerException e) {
throw new FileCopyException(R.string.error_io_exception);
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} finally {
close(os);
close(is);
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}
}
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private int getRotation(File file) {
return getRotation(Uri.parse("file://"+file.getAbsolutePath()));
}
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private int getRotation(Uri image) {
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InputStream is = null;
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try {
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is = mXmppConnectionService.getContentResolver().openInputStream(image);
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return ExifHelper.getOrientation(is);
} catch (FileNotFoundException e) {
return 0;
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} finally {
close(is);
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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(message.getUuid());
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if ((thumbnail == null) && (!cacheOnly)) {
File file = getFile(message);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = calcSampleSize(file, size);
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Bitmap fullsize = BitmapFactory.decodeFile(file.getAbsolutePath(),options);
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if (fullsize == null) {
throw new FileNotFoundException();
}
thumbnail = resize(fullsize, size);
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int rotation = getRotation(file);
if (rotation > 0) {
thumbnail = rotate(thumbnail, rotation);
}
this.mXmppConnectionService.getBitmapCache().put(message.getUuid(),thumbnail);
}
return thumbnail;
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}
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public Uri getTakePhotoUri() {
StringBuilder pathBuilder = new StringBuilder();
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pathBuilder.append(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM));
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pathBuilder.append('/');
pathBuilder.append("Camera");
pathBuilder.append('/');
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pathBuilder.append("IMG_" + this.imageDateFormat.format(new Date()) + ".jpg");
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Uri uri = Uri.parse("file://" + pathBuilder.toString());
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File file = new File(uri.toString());
file.getParentFile().mkdirs();
return uri;
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}
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public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
try {
Avatar avatar = new Avatar();
Bitmap bm = cropCenterSquare(image, size);
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if (bm == null) {
return null;
}
ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
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Base64OutputStream mBase64OutputSttream = new Base64OutputStream(
mByteArrayOutputStream, Base64.DEFAULT);
MessageDigest digest = MessageDigest.getInstance("SHA-1");
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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;
}
}
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public boolean isAvatarCached(Avatar avatar) {
File file = new File(getAvatarPath(avatar.getFilename()));
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return file.exists();
}
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public boolean save(Avatar avatar) {
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File file;
if (isAvatarCached(avatar)) {
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file = new File(getAvatarPath(avatar.getFilename()));
} else {
String filename = getAvatarPath(avatar.getFilename());
file = new File(filename + ".tmp");
file.getParentFile().mkdirs();
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OutputStream os = null;
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try {
file.createNewFile();
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os = new FileOutputStream(file);
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MessageDigest digest = MessageDigest.getInstance("SHA-1");
digest.reset();
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DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
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mDigestOutputStream.write(avatar.getImageAsBytes());
mDigestOutputStream.flush();
mDigestOutputStream.close();
String sha1sum = CryptoHelper.bytesToHex(digest.digest());
if (sha1sum.equals(avatar.sha1sum)) {
file.renameTo(new File(filename));
} else {
Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
file.delete();
return false;
}
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} catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
return false;
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} finally {
close(os);
}
}
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avatar.size = file.length();
return true;
}
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public String getAvatarPath(String avatar) {
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return mXmppConnectionService.getFilesDir().getAbsolutePath()+ "/avatars/" + avatar;
}
public Uri getAvatarUri(String avatar) {
return Uri.parse("file:" + getAvatarPath(avatar));
}
public Bitmap cropCenterSquare(Uri image, int size) {
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if (image == null) {
return null;
}
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InputStream is = null;
try {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = calcSampleSize(image, size);
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is = mXmppConnectionService.getContentResolver().openInputStream(image);
if (is == null) {
return null;
}
Bitmap input = BitmapFactory.decodeStream(is, null, options);
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if (input == null) {
return null;
} else {
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int rotation = getRotation(image);
if (rotation > 0) {
input = rotate(input, rotation);
}
return cropCenterSquare(input, size);
}
} catch (SecurityException e) {
return null; // happens for example on Android 6.0 if contacts permissions get revoked
} catch (FileNotFoundException e) {
return null;
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} finally {
close(is);
}
}
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public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
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if (image == null) {
return null;
}
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InputStream is = null;
try {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
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is = mXmppConnectionService.getContentResolver().openInputStream(image);
if (is == null) {
return null;
}
Bitmap source = BitmapFactory.decodeStream(is, null, options);
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if (source == null) {
return null;
}
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;
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RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
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Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(dest);
canvas.drawBitmap(source, null, targetRect, null);
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if (source != null && !source.isRecycled()) {
source.recycle();
}
return dest;
} catch (SecurityException e) {
return null; //android 6.0 with revoked permissions for example
} catch (FileNotFoundException e) {
return null;
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} finally {
close(is);
}
}
public Bitmap cropCenterSquare(Bitmap input, int size) {
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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;
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RectF target = new RectF(left, top, left + outWidth, top + outHeight);
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Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
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Canvas canvas = new Canvas(output);
canvas.drawBitmap(input, null, target, null);
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if (input != null && !input.isRecycled()) {
input.recycle();
}
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return output;
}
private int calcSampleSize(Uri image, int size) throws FileNotFoundException, SecurityException {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
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BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(image), null, options);
return calcSampleSize(options, size);
}
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private static int calcSampleSize(File image, int size) {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(image.getAbsolutePath(), options);
return calcSampleSize(options, size);
}
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public static 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;
}
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public Uri getJingleFileUri(Message message) {
File file = getFile(message);
return Uri.parse("file://" + file.getAbsolutePath());
}
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public void updateFileParams(Message message) {
updateFileParams(message,null);
}
public void updateFileParams(Message message, URL url) {
DownloadableFile file = getFile(message);
if (message.getType() == Message.TYPE_IMAGE || file.getMimeType().startsWith("image/")) {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(file.getAbsolutePath(), options);
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int rotation = getRotation(file);
boolean rotated = rotation == 90 || rotation == 270;
int imageHeight = rotated ? options.outWidth : options.outHeight;
int imageWidth = rotated ? options.outHeight : options.outWidth;
if (url == null) {
message.setBody(Long.toString(file.getSize()) + '|' + imageWidth + '|' + imageHeight);
} else {
message.setBody(url.toString()+"|"+Long.toString(file.getSize()) + '|' + imageWidth + '|' + imageHeight);
}
} else {
if (url != null) {
message.setBody(url.toString()+"|"+Long.toString(file.getSize()));
} else {
message.setBody(Long.toString(file.getSize()));
}
}
}
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public class FileCopyException extends Exception {
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private static final long serialVersionUID = -1010013599132881427L;
private int resId;
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public FileCopyException(int resId) {
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this.resId = resId;
}
public int getResId() {
return resId;
}
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}
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public Bitmap getAvatar(String avatar, int size) {
if (avatar == null) {
return null;
}
Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
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if (bm == null) {
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return null;
}
return bm;
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}
public boolean isFileAvailable(Message message) {
return getFile(message).exists();
}
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public static void close(Closeable stream) {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
}
}
}
public static void close(Socket socket) {
if (socket != null) {
try {
socket.close();
} catch (IOException e) {
}
}
}
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}