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/*
* Copyright (C) 2017 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 com.android.settingslib.development;
import android.os.AsyncTask;
import android.os.IBinder;
import android.os.Parcel;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.util.Log;
import androidx.annotation.NonNull;
import androidx.annotation.VisibleForTesting;
public class SystemPropPoker {
private static final String TAG = "SystemPropPoker";
private static final SystemPropPoker sInstance = new SystemPropPoker();
private boolean mBlockPokes = false;
private SystemPropPoker() {}
@NonNull
public static SystemPropPoker getInstance() {
return sInstance;
}
public void blockPokes() {
mBlockPokes = true;
}
public void unblockPokes() {
mBlockPokes = false;
}
public void poke() {
if (!mBlockPokes) {
createPokerTask().execute();
}
}
@VisibleForTesting
PokerTask createPokerTask() {
return new PokerTask();
}
public static class PokerTask extends AsyncTask<Void, Void, Void> {
@VisibleForTesting
String[] listServices() {
return ServiceManager.listServices();
}
@VisibleForTesting
IBinder checkService(String service) {
return ServiceManager.checkService(service);
}
@Override
protected Void doInBackground(Void... params) {
String[] services = listServices();
if (services == null) {
Log.e(TAG, "There are no services, how odd");
return null;
}
for (String service : services) {
IBinder obj = checkService(service);
if (obj != null) {
Parcel data = Parcel.obtain();
try {
obj.transact(IBinder.SYSPROPS_TRANSACTION, data, null, 0);
} catch (RemoteException e) {
// Ignore
} catch (Exception e) {
Log.i(TAG, "Someone wrote a bad service '" + service
+ "' that doesn't like to be poked", e);
}
data.recycle();
}
}
return null;
}
}
}
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