/*
|
* 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 com.android.server.os;
|
|
import android.annotation.NonNull;
|
import android.annotation.Nullable;
|
import android.content.Context;
|
import android.os.Build;
|
import android.os.IDeviceIdentifiersPolicyService;
|
import android.os.RemoteException;
|
import android.os.SystemProperties;
|
|
import com.android.internal.telephony.TelephonyPermissions;
|
import com.android.server.SystemService;
|
|
/**
|
* This service defines the policy for accessing device identifiers.
|
*/
|
public final class DeviceIdentifiersPolicyService extends SystemService {
|
public DeviceIdentifiersPolicyService(Context context) {
|
super(context);
|
}
|
|
@Override
|
public void onStart() {
|
publishBinderService(Context.DEVICE_IDENTIFIERS_SERVICE,
|
new DeviceIdentifiersPolicy(getContext()));
|
}
|
|
private static final class DeviceIdentifiersPolicy
|
extends IDeviceIdentifiersPolicyService.Stub {
|
private final @NonNull Context mContext;
|
|
public DeviceIdentifiersPolicy(Context context) {
|
mContext = context;
|
}
|
|
@Override
|
public @Nullable String getSerial() throws RemoteException {
|
// Since this invocation is on the server side a null value is used for the
|
// callingPackage as the server's package name (typically android) should not be used
|
// for any device / profile owner checks. The majority of requests for the serial number
|
// should use the getSerialForPackage method with the calling package specified.
|
if (!TelephonyPermissions.checkCallingOrSelfReadDeviceIdentifiers(mContext,
|
/* callingPackage */ null, "getSerial")) {
|
return Build.UNKNOWN;
|
}
|
return SystemProperties.get("ro.serialno", Build.UNKNOWN);
|
}
|
|
@Override
|
public @Nullable String getSerialForPackage(String callingPackage) throws RemoteException {
|
if (!TelephonyPermissions.checkCallingOrSelfReadDeviceIdentifiers(mContext,
|
callingPackage, "getSerial")) {
|
return Build.UNKNOWN;
|
}
|
return SystemProperties.get("ro.serialno", Build.UNKNOWN);
|
}
|
}
|
}
|