Conversations/src/main/java/eu/siacs/conversations/persistance/FileBackend.java

861 lines
27 KiB
Java

package eu.siacs.conversations.persistance;
import android.annotation.TargetApi;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
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.media.MediaMetadataRetriever;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.os.ParcelFileDescriptor;
import android.provider.MediaStore;
import android.provider.OpenableColumns;
import android.system.Os;
import android.system.StructStat;
import android.util.Base64;
import android.util.Base64OutputStream;
import android.util.Log;
import android.util.LruCache;
import android.webkit.MimeTypeMap;
import java.io.ByteArrayOutputStream;
import java.io.Closeable;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileInputStream;
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;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import eu.siacs.conversations.Config;
import eu.siacs.conversations.R;
import eu.siacs.conversations.entities.DownloadableFile;
import eu.siacs.conversations.entities.Message;
import eu.siacs.conversations.services.XmppConnectionService;
import eu.siacs.conversations.utils.CryptoHelper;
import eu.siacs.conversations.utils.ExifHelper;
import eu.siacs.conversations.utils.FileUtils;
import eu.siacs.conversations.xmpp.pep.Avatar;
public class FileBackend {
private final SimpleDateFormat imageDateFormat = new SimpleDateFormat("yyyyMMdd_HHmmssSSS", Locale.US);
private XmppConnectionService mXmppConnectionService;
public FileBackend(XmppConnectionService service) {
this.mXmppConnectionService = service;
}
private void createNoMedia() {
final File nomedia = new File(getConversationsFileDirectory()+".nomedia");
if (!nomedia.exists()) {
try {
nomedia.createNewFile();
} catch (Exception e) {
Log.d(Config.LOGTAG, "could not create nomedia file");
}
}
}
public void updateMediaScanner(File file) {
if (file.getAbsolutePath().startsWith(getConversationsImageDirectory())) {
Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
intent.setData(Uri.fromFile(file));
mXmppConnectionService.sendBroadcast(intent);
} else {
createNoMedia();
}
}
public boolean deleteFile(Message message) {
File file = getFile(message);
if (file.delete()) {
updateMediaScanner(file);
return true;
} else {
return false;
}
}
public DownloadableFile getFile(Message message) {
return getFile(message, true);
}
public DownloadableFile getFile(Message message, boolean decrypted) {
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);
} else {
String mime = message.getMimeType();
if (mime != null && mime.startsWith("image")) {
file = new DownloadableFile(getConversationsImageDirectory() + path);
} else {
file = new DownloadableFile(getConversationsFileDirectory() + path);
}
}
if (encrypted) {
return new DownloadableFile(getConversationsFileDirectory() + file.getName() + ".pgp");
} else {
return file;
}
}
private static long getFileSize(Context context, Uri uri) {
Cursor cursor = context.getContentResolver().query(uri, null, null, null, null);
if (cursor != null && cursor.moveToFirst()) {
return cursor.getLong(cursor.getColumnIndex(OpenableColumns.SIZE));
} else {
return -1;
}
}
public static boolean allFilesUnderSize(Context context, List<Uri> uris, long max) {
if (max <= 0) {
Log.d(Config.LOGTAG,"server did not report max file size for http upload");
return true; //exception to be compatible with HTTP Upload < v0.2
}
for(Uri uri : uris) {
if (FileBackend.getFileSize(context, uri) > max) {
Log.d(Config.LOGTAG,"not all files are under "+max+" bytes. suggesting falling back to jingle");
return false;
}
}
return true;
}
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));
}
Bitmap result = Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true);
if (originalBitmap != null && !originalBitmap.isRecycled()) {
originalBitmap.recycle();
}
return result;
} else {
return originalBitmap;
}
}
public static Bitmap rotate(Bitmap bitmap, int degree) {
if (degree == 0) {
return bitmap;
}
int w = bitmap.getWidth();
int h = bitmap.getHeight();
Matrix mtx = new Matrix();
mtx.postRotate(degree);
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 >= Config.IMAGE_MAX_SIZE ) {
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) {
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;
}
}
public String getOriginalPath(Uri uri) {
return FileUtils.getPath(mXmppConnectionService,uri);
}
public void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
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 " + file.getAbsolutePath());
}
public void copyFileToPrivateStorage(Message message, Uri uri) throws FileCopyException {
String mime = mXmppConnectionService.getContentResolver().getType(uri);
Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage (mime="+mime+")");
String extension = MimeTypeMap.getSingleton().getExtensionFromMimeType(mime);
if (extension == null) {
extension = getExtensionFromUri(uri);
}
message.setRelativeFilePath(message.getUuid() + "." + extension);
copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
}
private String getExtensionFromUri(Uri uri) {
String[] projection = {MediaStore.MediaColumns.DATA};
String filename = null;
Cursor cursor = mXmppConnectionService.getContentResolver().query(uri, projection, null, null, null);
if (cursor != null) {
try {
if (cursor.moveToFirst()) {
filename = cursor.getString(0);
}
} catch (Exception e) {
filename = null;
} finally {
cursor.close();
}
}
int pos = filename == null ? -1 : filename.lastIndexOf('.');
return pos > 0 ? filename.substring(pos+1) : null;
}
private void copyImageToPrivateStorage(File file, Uri image, int sampleSize) throws FileCopyException {
file.getParentFile().mkdirs();
InputStream is = null;
OutputStream os = null;
try {
file.createNewFile();
is = mXmppConnectionService.getContentResolver().openInputStream(image);
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, Config.IMAGE_SIZE);
int rotation = getRotation(image);
scaledBitmap = rotate(scaledBitmap, rotation);
boolean targetSizeReached = false;
int quality = Config.IMAGE_QUALITY;
while(!targetSizeReached) {
os = new FileOutputStream(file);
boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
if (!success) {
throw new FileCopyException(R.string.error_compressing_image);
}
os.flush();
targetSizeReached = file.length() <= Config.IMAGE_MAX_SIZE || quality <= 50;
quality -= 5;
}
scaledBitmap.recycle();
return;
} 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) {
copyImageToPrivateStorage(file, 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);
}
}
public void copyImageToPrivateStorage(File file, Uri image) throws FileCopyException {
copyImageToPrivateStorage(file, image, 0);
}
public void copyImageToPrivateStorage(Message message, Uri image) 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;
}
copyImageToPrivateStorage(getFile(message), image);
updateFileParams(message);
}
private int getRotation(File file) {
return getRotation(Uri.parse("file://"+file.getAbsolutePath()));
}
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 {
final String uuid = message.getUuid();
final LruCache<String,Bitmap> cache = mXmppConnectionService.getBitmapCache();
Bitmap thumbnail = cache.get(uuid);
if ((thumbnail == null) && (!cacheOnly)) {
synchronized (cache) {
thumbnail = cache.get(uuid);
if (thumbnail != null) {
return thumbnail;
}
DownloadableFile file = getFile(message);
if (file.getMimeType().startsWith("video/")) {
thumbnail = getVideoPreview(file, size);
} else {
Bitmap fullsize = getFullsizeImagePreview(file, size);
if (fullsize == null) {
throw new FileNotFoundException();
}
thumbnail = resize(fullsize, size);
thumbnail = rotate(thumbnail, getRotation(file));
}
this.mXmppConnectionService.getBitmapCache().put(uuid, thumbnail);
}
}
return thumbnail;
}
private Bitmap getFullsizeImagePreview(File file, int size) {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = calcSampleSize(file, size);
return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
}
private Bitmap getVideoPreview(File file, int size) {
MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
metadataRetriever.setDataSource(file.getAbsolutePath());
Bitmap frame = metadataRetriever.getFrameAtTime(0);
metadataRetriever.release();
frame = resize(frame, size);
Canvas canvas = new Canvas(frame);
Bitmap play = BitmapFactory.decodeResource(mXmppConnectionService.getResources(), R.drawable.play_video);
float x = (frame.getWidth() - play.getWidth()) / 2.0f;
float y = (frame.getHeight() - play.getHeight()) / 2.0f;
canvas.drawBitmap(play,x,y,null);
return frame;
}
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 Avatar getStoredPepAvatar(String hash) {
if (hash == null) {
return null;
}
Avatar avatar = new Avatar();
File file = new File(getAvatarPath(hash));
FileInputStream is = null;
try {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(file.getAbsolutePath(), options);
is = new FileInputStream(file);
ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
Base64OutputStream mBase64OutputStream = new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
MessageDigest digest = MessageDigest.getInstance("SHA-1");
DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
byte[] buffer = new byte[4096];
int length;
while ((length = is.read(buffer)) > 0) {
os.write(buffer, 0, length);
}
os.flush();
os.close();
avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
avatar.image = new String(mByteArrayOutputStream.toByteArray());
avatar.height = options.outHeight;
avatar.width = options.outWidth;
return avatar;
} catch (IOException e) {
return null;
} catch (NoSuchAlgorithmException e) {
return null;
} finally {
close(is);
}
}
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 (IllegalArgumentException | IOException | 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);
if (is == null) {
return null;
}
Bitmap input = BitmapFactory.decodeStream(is, null, options);
if (input == null) {
return null;
} else {
input = rotate(input, getRotation(image));
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;
} 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);
if (is == null) {
return null;
}
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);
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;
} 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);
if (input != null && !input.isRecycled()) {
input.recycle();
}
return output;
}
private int calcSampleSize(Uri image, int size) throws FileNotFoundException, SecurityException {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(image), null, options);
return calcSampleSize(options, size);
}
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);
}
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;
}
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);
boolean image = message.getType() == Message.TYPE_IMAGE || file.getMimeType().startsWith("image/");
boolean video = message.getMimeType().startsWith("video/");
if (image || video) {
try {
Dimensions dimensions = image ? getImageDimensions(file) : getVideoDimensions(file);
if (url == null) {
message.setBody(Long.toString(file.getSize()) + '|' + dimensions.width + '|' + dimensions.height);
} else {
message.setBody(url.toString() + "|" + Long.toString(file.getSize()) + '|' + dimensions.width + '|' + dimensions.height);
}
return;
} catch (NotAVideoFile notAVideoFile) {
Log.d(Config.LOGTAG,"file with mime type "+file.getMimeType()+" was not a video file");
//fall threw
}
}
if (url != null) {
message.setBody(url.toString()+"|"+Long.toString(file.getSize()));
} else {
message.setBody(Long.toString(file.getSize()));
}
}
private Dimensions getImageDimensions(File file) {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(file.getAbsolutePath(), options);
int rotation = getRotation(file);
boolean rotated = rotation == 90 || rotation == 270;
int imageHeight = rotated ? options.outWidth : options.outHeight;
int imageWidth = rotated ? options.outHeight : options.outWidth;
return new Dimensions(imageHeight, imageWidth);
}
private Dimensions getVideoDimensions(File file) throws NotAVideoFile {
MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
metadataRetriever.setDataSource(file.getAbsolutePath());
String hasVideo = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_HAS_VIDEO);
if (hasVideo == null) {
throw new NotAVideoFile();
}
int rotation = extractRotationFromMediaRetriever(metadataRetriever);
boolean rotated = rotation == 90 || rotation == 270;
int height;
try {
String h = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT);
height = Integer.parseInt(h);
} catch (Exception e) {
height = -1;
}
int width;
try {
String w = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH);
width = Integer.parseInt(w);
} catch (Exception e) {
width = -1;
}
metadataRetriever.release();
Log.d(Config.LOGTAG,"extracted video dims "+width+"x"+height);
return rotated ? new Dimensions(width, height) : new Dimensions(height, width);
}
private int extractRotationFromMediaRetriever(MediaMetadataRetriever metadataRetriever) {
int rotation;
if (Build.VERSION.SDK_INT >= 17) {
String r = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION);
try {
rotation = Integer.parseInt(r);
} catch (Exception e) {
rotation = 0;
}
} else {
rotation = 0;
}
return rotation;
}
private class Dimensions {
public final int width;
public final int height;
public Dimensions(int height, int width) {
this.width = width;
this.height = height;
}
}
private class NotAVideoFile extends Exception {
}
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) {
}
}
}
public static void close(Socket socket) {
if (socket != null) {
try {
socket.close();
} catch (IOException e) {
}
}
}
public static boolean weOwnFile(Context context, Uri uri) {
if (uri == null || !ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
return false;
} else if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
return fileIsInFilesDir(context, uri);
} else {
return weOwnFileLollipop(uri);
}
}
/**
* This is more than hacky but probably way better than doing nothing
* Further 'optimizations' might contain to get the parents of CacheDir and NoBackupDir
* and check against those as well
*/
private static boolean fileIsInFilesDir(Context context, Uri uri) {
try {
final String haystack = context.getFilesDir().getParentFile().getCanonicalPath();
final String needle = new File(uri.getPath()).getCanonicalPath();
return needle.startsWith(haystack);
} catch (IOException e) {
return false;
}
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private static boolean weOwnFileLollipop(Uri uri) {
try {
File file = new File(uri.getPath());
FileDescriptor fd = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY).getFileDescriptor();
StructStat st = Os.fstat(fd);
return st.st_uid == android.os.Process.myUid();
} catch (FileNotFoundException e) {
return false;
} catch (Exception e) {
return true;
}
}
}