Max Bires
27e87c669a
Several utility classes were declared abstract, but there is no intention of subclassing these classes. Instead opt for private constructors where necessary to avoid instantiation and remove the abstract keywords. Additionally make the classes final to clearly indicate they are not intended to be subclassed. Test: builds Change-Id: I38bfe5f0685e4b333201c9c9fbb13b7aac8b4980
67 lines
2.2 KiB
Java
67 lines
2.2 KiB
Java
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.security;
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import android.compat.annotation.UnsupportedAppUsage;
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import android.content.Context;
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import android.os.RemoteException;
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import android.os.ServiceManager;
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import android.os.UserHandle;
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import android.service.gatekeeper.IGateKeeperService;
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/**
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* Convenience class for accessing the gatekeeper service.
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*
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* @hide
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*/
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public final class GateKeeper {
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public static final long INVALID_SECURE_USER_ID = 0;
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private GateKeeper() {}
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public static IGateKeeperService getService() {
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IGateKeeperService service = IGateKeeperService.Stub.asInterface(
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ServiceManager.getService(Context.GATEKEEPER_SERVICE));
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if (service == null) {
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throw new IllegalStateException("Gatekeeper service not available");
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}
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return service;
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}
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@UnsupportedAppUsage
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public static long getSecureUserId() throws IllegalStateException {
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return getSecureUserId(UserHandle.myUserId());
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}
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/**
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* Return the secure user id for a given user id
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* @param userId the user id, e.g. 0
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* @return the secure user id or {@link GateKeeper#INVALID_SECURE_USER_ID} if no such mapping
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* for the given user id is found.
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* @throws IllegalStateException if there is an error retrieving the secure user id
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*/
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public static long getSecureUserId(int userId) throws IllegalStateException {
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try {
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return getService().getSecureUserId(userId);
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} catch (RemoteException e) {
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throw new IllegalStateException(
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"Failed to obtain secure user ID from gatekeeper", e);
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}
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}
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}
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