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/*
* Copyright (C) 2016 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.security.cts;
import android.app.Instrumentation;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.os.Process;
import android.os.RemoteException;
import android.platform.test.annotations.AsbSecurityTest;
import android.security.cts.IIsolatedService;
import android.security.cts.IsolatedService;
import android.util.Log;
import androidx.test.InstrumentationRegistry;
import com.android.internal.util.ArrayUtils;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import junit.framework.Assert;
import org.junit.Before;
import org.junit.After;
import androidx.test.runner.AndroidJUnit4;
import org.junit.runner.RunWith;
import org.junit.Test;
@RunWith(AndroidJUnit4.class)
public class IsolatedProcessTest {
static final String TAG = IsolatedProcessTest.class.getSimpleName();
private static final long BIND_SERVICE_TIMEOUT = 5000;
// No service other than these should be visible to an isolated process
private static final String[] SERVICES_ALLOWED_TO_ISOLATED_PROCESS = {
"package",
Context.ACTIVITY_SERVICE
};
// Arbitrary set of services to test accessibility from an isolated process
private static final String[] RESTRICTED_SERVICES_TO_TEST = {
Context.ALARM_SERVICE,
Context.WINDOW_SERVICE,
Context.POWER_SERVICE
};
private CountDownLatch mLatch;
private IIsolatedService mService;
private final ServiceConnection mServiceConnection = new ServiceConnection() {
@Override
public void onServiceDisconnected(ComponentName name) {
Log.e(TAG, "Isolated service " + name + " died abruptly");
}
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
mService = IIsolatedService.Stub.asInterface(service);
mLatch.countDown();
}
};
private static Instrumentation getInstrumentation() {
return InstrumentationRegistry.getInstrumentation();
}
@Before
public void setUp() throws InterruptedException {
mLatch = new CountDownLatch(1);
Intent serviceIntent = new Intent(getInstrumentation().getContext(), IsolatedService.class);
getInstrumentation().getContext().bindService(serviceIntent, mServiceConnection, Context.BIND_AUTO_CREATE);
Assert.assertTrue("Timed out while waiting to bind to isolated service",
mLatch.await(BIND_SERVICE_TIMEOUT, TimeUnit.MILLISECONDS));
}
@Test
@AsbSecurityTest(cveBugId = 30202228)
public void testGetCachedServicesFromIsolatedService() throws RemoteException {
String[] cachedServices = mService.getCachedSystemServices();
for (String serviceName : cachedServices) {
Assert.assertTrue(serviceName + " should not be accessbible from an isolated process",
ArrayUtils.contains(SERVICES_ALLOWED_TO_ISOLATED_PROCESS, serviceName));
}
}
@Test
@AsbSecurityTest(cveBugId = 30202228)
public void testGetServiceFromIsolatedService() throws RemoteException {
for (String serviceName : RESTRICTED_SERVICES_TO_TEST) {
IBinder service = mService.getSystemService(serviceName);
Assert.assertNull(serviceName + " should not be accessible from an isolated process",
service);
}
}
@Test
public void testGetProcessIsIsolated() throws RemoteException {
Assert.assertFalse(Process.isIsolated());
Assert.assertTrue(mService.getProcessIsIsolated());
}
@After
public void tearDown() {
getInstrumentation().getContext().unbindService(mServiceConnection);
}
}
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