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/*
* Copyright (C) 2020 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.server;
import android.content.Context;
import android.util.Log;
import com.android.modules.utils.build.SdkLevel;
import com.android.networkstack.apishim.ConstantsShim;
import com.android.server.connectivity.ConnectivityNativeService;
import com.android.server.ethernet.EthernetService;
import com.android.server.ethernet.EthernetServiceImpl;
import com.android.server.nearby.NearbyService;
/**
* Connectivity service initializer for core networking. This is called by system server to create
* a new instance of connectivity services.
*/
public final class ConnectivityServiceInitializer extends SystemService {
private static final String TAG = ConnectivityServiceInitializer.class.getSimpleName();
private final ConnectivityNativeService mConnectivityNative;
private final ConnectivityService mConnectivity;
private final IpSecService mIpSecService;
private final NsdService mNsdService;
private final NearbyService mNearbyService;
private final EthernetServiceImpl mEthernetServiceImpl;
public ConnectivityServiceInitializer(Context context) {
super(context);
// Load JNI libraries used by ConnectivityService and its dependencies
System.loadLibrary("service-connectivity");
mEthernetServiceImpl = createEthernetService(context);
mConnectivity = new ConnectivityService(context);
mIpSecService = createIpSecService(context);
mConnectivityNative = createConnectivityNativeService(context);
mNsdService = createNsdService(context);
mNearbyService = createNearbyService(context);
}
@Override
public void onStart() {
if (mEthernetServiceImpl != null) {
Log.i(TAG, "Registering " + Context.ETHERNET_SERVICE);
publishBinderService(Context.ETHERNET_SERVICE, mEthernetServiceImpl,
/* allowIsolated= */ false);
}
Log.i(TAG, "Registering " + Context.CONNECTIVITY_SERVICE);
publishBinderService(Context.CONNECTIVITY_SERVICE, mConnectivity,
/* allowIsolated= */ false);
if (mIpSecService != null) {
Log.i(TAG, "Registering " + Context.IPSEC_SERVICE);
publishBinderService(Context.IPSEC_SERVICE, mIpSecService, /* allowIsolated= */ false);
}
if (mConnectivityNative != null) {
Log.i(TAG, "Registering " + ConnectivityNativeService.SERVICE_NAME);
publishBinderService(ConnectivityNativeService.SERVICE_NAME, mConnectivityNative,
/* allowIsolated= */ false);
}
if (mNsdService != null) {
Log.i(TAG, "Registering " + Context.NSD_SERVICE);
publishBinderService(Context.NSD_SERVICE, mNsdService, /* allowIsolated= */ false);
}
if (mNearbyService != null) {
Log.i(TAG, "Registering " + ConstantsShim.NEARBY_SERVICE);
publishBinderService(ConstantsShim.NEARBY_SERVICE, mNearbyService,
/* allowIsolated= */ false);
}
}
@Override
public void onBootPhase(int phase) {
if (mNearbyService != null) {
mNearbyService.onBootPhase(phase);
}
if (phase == SystemService.PHASE_SYSTEM_SERVICES_READY && mEthernetServiceImpl != null) {
mEthernetServiceImpl.start();
}
}
/**
* Return IpSecService instance, or null if current SDK is lower than T.
*/
private IpSecService createIpSecService(final Context context) {
if (!SdkLevel.isAtLeastT()) return null;
return new IpSecService(context);
}
/**
* Return ConnectivityNativeService instance, or null if current SDK is lower than T.
*/
private ConnectivityNativeService createConnectivityNativeService(final Context context) {
if (!SdkLevel.isAtLeastT()) return null;
try {
return new ConnectivityNativeService(context);
} catch (UnsupportedOperationException e) {
Log.d(TAG, "Unable to get ConnectivityNative service", e);
return null;
}
}
/** Return NsdService instance or null if current SDK is lower than T */
private NsdService createNsdService(final Context context) {
if (!SdkLevel.isAtLeastT()) return null;
return NsdService.create(context);
}
/** Return Nearby service instance or null if current SDK is lower than T */
private NearbyService createNearbyService(final Context context) {
if (!SdkLevel.isAtLeastT()) return null;
try {
return new NearbyService(context);
} catch (UnsupportedOperationException e) {
// Nearby is not yet supported in all branches
// TODO: remove catch clause when it is available.
Log.i(TAG, "Skipping unsupported service " + ConstantsShim.NEARBY_SERVICE);
return null;
}
}
/**
* Return EthernetServiceImpl instance or null if current SDK is lower than T or Ethernet
* service isn't necessary.
*/
private EthernetServiceImpl createEthernetService(final Context context) {
if (!SdkLevel.isAtLeastT() || !mConnectivity.deviceSupportsEthernet(context)) {
return null;
}
return EthernetService.create(context);
}
}
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