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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package android.app;
import android.annotation.Nullable;
import android.annotation.SystemService;
import android.content.Context;
import android.content.pm.ParceledListSlice;
import android.os.Handler;
import android.os.IBinder;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.util.Singleton;
/**
* Class for managing an app's permission to access a particular {@link android.net.Uri}.
*
* @hide
*/
@SystemService(Context.URI_GRANTS_SERVICE)
public class UriGrantsManager {
private final Context mContext;
UriGrantsManager(Context context, Handler handler) {
mContext = context;
}
/** @hide */
public static IUriGrantsManager getService() {
return IUriGrantsManagerSingleton.get();
}
private static final Singleton<IUriGrantsManager> IUriGrantsManagerSingleton =
new Singleton<IUriGrantsManager>() {
@Override
protected IUriGrantsManager create() {
final IBinder b = ServiceManager.getService(Context.URI_GRANTS_SERVICE);
return IUriGrantsManager.Stub.asInterface(b);
}
};
/**
* Permits an application to clear the persistent URI permissions granted to another.
*
* <p>Typically called by Settings, requires {@code CLEAR_APP_GRANTED_URI_PERMISSIONS}.
*
* @param packageName application to clear its granted permissions
*
* @hide
*/
public void clearGrantedUriPermissions(String packageName) {
try {
getService().clearGrantedUriPermissions(packageName, mContext.getUserId());
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
/**
* Permits an application to get the persistent URI permissions granted to another.
*
* <p>Typically called by Settings or DocumentsUI, requires
* {@code GET_APP_GRANTED_URI_PERMISSIONS}.
*
* @param packageName application to look for the granted permissions, or {@code null} to get
* granted permissions for all applications
* @return list of granted URI permissions
*
* @hide
*/
public ParceledListSlice<GrantedUriPermission> getGrantedUriPermissions(
@Nullable String packageName) {
try {
@SuppressWarnings("unchecked")
final ParceledListSlice<GrantedUriPermission> castedList = getService()
.getGrantedUriPermissions(packageName, mContext.getUserId());
return castedList;
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
}
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