conversations-classic/src/main/java/eu/siacs/conversations/persistance/FileBackend.java
2015-07-11 21:24:30 +02:00

550 lines
17 KiB
Java

package eu.siacs.conversations.persistance;
import java.io.ByteArrayOutputStream;
import java.io.Closeable;
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.net.URL;
import java.security.DigestOutputStream;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Arrays;
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 android.webkit.MimeTypeMap;
import eu.siacs.conversations.Config;
import eu.siacs.conversations.R;
import eu.siacs.conversations.entities.Transferable;
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 final 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) {
String path = message.getRelativeFilePath();
String extension;
if (path != null && !path.isEmpty()) {
String[] parts = path.split("\\.");
extension = "."+parts[parts.length - 1];
} else {
if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_TEXT) {
extension = ".webp";
} else {
extension = "";
}
path = message.getUuid()+extension;
}
final boolean encrypted = !decrypted
&& (message.getEncryption() == Message.ENCRYPTION_PGP
|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
if (encrypted) {
return new DownloadableFile(getConversationsFileDirectory()+message.getUuid()+extension+".pgp");
} else {
if (path.startsWith("/")) {
return new DownloadableFile(path);
} else {
if (Arrays.asList(Transferable.VALID_IMAGE_EXTENSIONS).contains(extension)) {
return new DownloadableFile(getConversationsFileDirectory() + path);
} else {
return new DownloadableFile(getConversationsImageDirectory() + path);
}
}
}
}
public static String getConversationsFileDirectory() {
return Environment.getExternalStorageDirectory().getAbsolutePath()+"/Conversations/";
}
public static String getConversationsImageDirectory() {
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));
}
return Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true);
} 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 String getOriginalPath(Uri uri) {
String path = null;
if (uri.getScheme().equals("file")) {
return uri.getPath();
} else if (uri.toString().startsWith("content://media/")) {
String[] projection = {MediaStore.MediaColumns.DATA};
Cursor metaCursor = mXmppConnectionService.getContentResolver().query(uri,
projection, null, null, null);
if (metaCursor != null) {
try {
if (metaCursor.moveToFirst()) {
path = metaCursor.getString(0);
}
} finally {
metaCursor.close();
}
}
}
return path;
}
public DownloadableFile copyFileToPrivateStorage(Message message, Uri uri) throws FileCopyException {
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 {
file.createNewFile();
os = new FileOutputStream(file);
is = mXmppConnectionService.getContentResolver().openInputStream(uri);
byte[] buffer = new byte[1024];
int length;
while ((length = is.read(buffer)) > 0) {
os.write(buffer, 0, length);
}
os.flush();
} catch(FileNotFoundException e) {
throw new FileCopyException(R.string.error_file_not_found);
} catch (IOException e) {
e.printStackTrace();
throw new FileCopyException(R.string.error_io_exception);
} finally {
close(os);
close(is);
}
Log.d(Config.LOGTAG, "output file name " + mXmppConnectionService.getFileBackend().getFile(message));
return file;
}
public DownloadableFile copyImageToPrivateStorage(Message message, Uri image)
throws FileCopyException {
return this.copyImageToPrivateStorage(message, image, 0);
}
private DownloadableFile copyImageToPrivateStorage(Message message,
Uri image, int sampleSize) throws FileCopyException {
DownloadableFile file = getFile(message);
file.getParentFile().mkdirs();
InputStream is = null;
OutputStream os = null;
try {
file.createNewFile();
is = mXmppConnectionService.getContentResolver().openInputStream(image);
os = new FileOutputStream(file);
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 FileCopyException(R.string.error_not_an_image_file);
}
Bitmap scaledBitmap = resize(originalBitmap, IMAGE_SIZE);
int rotation = getRotation(image);
if (rotation > 0) {
scaledBitmap = rotate(scaledBitmap, rotation);
}
boolean success = scaledBitmap.compress(Bitmap.CompressFormat.WEBP, 75, os);
if (!success) {
throw new FileCopyException(R.string.error_compressing_image);
}
os.flush();
long size = file.getSize();
int width = scaledBitmap.getWidth();
int height = scaledBitmap.getHeight();
message.setBody(Long.toString(size) + '|' + width + '|' + height);
return file;
} catch (FileNotFoundException e) {
throw new FileCopyException(R.string.error_file_not_found);
} catch (IOException e) {
e.printStackTrace();
throw new FileCopyException(R.string.error_io_exception);
} catch (SecurityException e) {
throw new FileCopyException(R.string.error_security_exception_during_image_copy);
} catch (OutOfMemoryError e) {
++sampleSize;
if (sampleSize <= 3) {
return copyImageToPrivateStorage(message, image, sampleSize);
} else {
throw new FileCopyException(R.string.error_out_of_memory);
}
} catch (NullPointerException e) {
throw new FileCopyException(R.string.error_io_exception);
} finally {
close(os);
close(is);
}
}
private int getRotation(Uri image) {
InputStream is = null;
try {
is = mXmppConnectionService.getContentResolver().openInputStream(image);
return ExifHelper.getOrientation(is);
} catch (FileNotFoundException e) {
return 0;
} finally {
close(is);
}
}
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) {
File file;
if (isAvatarCached(avatar)) {
file = new File(getAvatarPath(avatar.getFilename()));
} else {
String filename = getAvatarPath(avatar.getFilename());
file = new File(filename + ".tmp");
file.getParentFile().mkdirs();
OutputStream os = null;
try {
file.createNewFile();
os = new FileOutputStream(file);
MessageDigest digest = MessageDigest.getInstance("SHA-1");
digest.reset();
DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
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;
}
} catch (FileNotFoundException e) {
return false;
} catch (IOException e) {
return false;
} catch (NoSuchAlgorithmException e) {
return false;
} finally {
close(os);
}
}
avatar.size = file.length();
return true;
}
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) {
if (image == null) {
return null;
}
InputStream is = null;
try {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = calcSampleSize(image, size);
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;
} finally {
close(is);
}
}
public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
if (image == null) {
return null;
}
InputStream is = null;
try {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = calcSampleSize(image,Math.max(newHeight, newWidth));
is = mXmppConnectionService.getContentResolver().openInputStream(image);
Bitmap source = BitmapFactory.decodeStream(is, null, options);
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;
RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(dest);
canvas.drawBitmap(source, null, targetRect, null);
return dest;
} catch (FileNotFoundException e) {
return null;
} finally {
close(is);
}
}
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, Bitmap.Config.ARGB_8888);
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 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);
int imageHeight = options.outHeight;
int imageWidth = 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()));
}
}
}
public class FileCopyException extends Exception {
private static final long serialVersionUID = -1010013599132881427L;
private int resId;
public FileCopyException(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();
}
public static void close(Closeable stream) {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
}
}
}
}