| /* |
| * Copyright (C) 2022 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.devicepolicy; |
| |
| import android.annotation.NonNull; |
| import android.app.admin.Authority; |
| import android.app.admin.PolicyValue; |
| |
| import java.util.ArrayList; |
| import java.util.LinkedHashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.Optional; |
| |
| final class TopPriority<V> extends ResolutionMechanism<V> { |
| |
| private final List<String> mHighestToLowestPriorityAuthorities; |
| |
| TopPriority(@NonNull List<String> highestToLowestPriorityAuthorities) { |
| Objects.requireNonNull(highestToLowestPriorityAuthorities); |
| mHighestToLowestPriorityAuthorities = highestToLowestPriorityAuthorities; |
| } |
| |
| @Override |
| PolicyValue<V> resolve(@NonNull LinkedHashMap<EnforcingAdmin, PolicyValue<V>> adminPolicies) { |
| if (adminPolicies.isEmpty()) { |
| return null; |
| } |
| for (String authority : mHighestToLowestPriorityAuthorities) { |
| Optional<EnforcingAdmin> admin = adminPolicies.keySet().stream() |
| .filter(a -> a.hasAuthority(authority)).findFirst(); |
| if (admin.isPresent()) { |
| return adminPolicies.get(admin.get()); |
| } |
| } |
| // Return first set policy if no known authority is found |
| Map.Entry<EnforcingAdmin, PolicyValue<V>> policy = |
| adminPolicies.entrySet().stream().findFirst().get(); |
| return policy.getValue(); |
| } |
| |
| @Override |
| android.app.admin.TopPriority<V> getParcelableResolutionMechanism() { |
| return new android.app.admin.TopPriority<>(getParcelableAuthorities()); |
| } |
| |
| private List<Authority> getParcelableAuthorities() { |
| List<Authority> authorities = new ArrayList<>(); |
| for (String authority : mHighestToLowestPriorityAuthorities) { |
| authorities.add(EnforcingAdmin.getParcelableAuthority(authority)); |
| } |
| return authorities; |
| } |
| |
| @Override |
| public String toString() { |
| return "TopPriority { mHighestToLowestPriorityAuthorities= " |
| + mHighestToLowestPriorityAuthorities + " }"; |
| } |
| } |