| /* |
| * Copyright (C) 2018 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.infra; |
| |
| import android.annotation.NonNull; |
| import android.annotation.UserIdInt; |
| import android.content.Context; |
| import android.provider.Settings; |
| import android.text.TextUtils; |
| import android.util.ArraySet; |
| |
| import java.io.PrintWriter; |
| import java.util.List; |
| import java.util.Set; |
| |
| /** |
| * Gets the service name using a property from the {@link android.provider.Settings.Secure} |
| * provider. |
| * |
| * @hide |
| */ |
| public final class SecureSettingsServiceNameResolver extends ServiceNameBaseResolver { |
| /** |
| * The delimiter to be used to parse the secure settings string. Services must make sure |
| * that this delimiter is used while adding component names to their secure setting property. |
| */ |
| private static final char COMPONENT_NAME_SEPARATOR = ':'; |
| |
| private final TextUtils.SimpleStringSplitter mStringColonSplitter = |
| new TextUtils.SimpleStringSplitter(COMPONENT_NAME_SEPARATOR); |
| |
| @NonNull |
| private final String mProperty; |
| |
| public SecureSettingsServiceNameResolver(@NonNull Context context, @NonNull String property) { |
| this(context, property, /*isMultiple*/false); |
| } |
| |
| /** |
| * |
| * @param context the context required to retrieve the secure setting value |
| * @param property name of the secure setting key |
| * @param isMultiple true if the system service using this resolver needs to connect to |
| * multiple remote services, false otherwise |
| */ |
| public SecureSettingsServiceNameResolver(@NonNull Context context, @NonNull String property, |
| boolean isMultiple) { |
| super(context, isMultiple); |
| mProperty = property; |
| } |
| |
| // TODO(b/117779333): support proto |
| @Override |
| public void dumpShort(@NonNull PrintWriter pw) { |
| pw.print("SecureSettingsServiceNamer: prop="); pw.print(mProperty); |
| } |
| |
| // TODO(b/117779333): support proto |
| @Override |
| public void dumpShort(@NonNull PrintWriter pw, @UserIdInt int userId) { |
| pw.print("defaultService="); pw.print(getDefaultServiceName(userId)); |
| } |
| |
| @Override |
| public String toString() { |
| return "SecureSettingsServiceNameResolver[" + mProperty + "]"; |
| } |
| |
| @Override |
| public String[] readServiceNameList(int userId) { |
| return parseColonDelimitedServiceNames( |
| Settings.Secure.getStringForUser( |
| mContext.getContentResolver(), mProperty, userId)); |
| } |
| |
| @Override |
| public String readServiceName(int userId) { |
| return Settings.Secure.getStringForUser( |
| mContext.getContentResolver(), mProperty, userId); |
| } |
| |
| @Override |
| public void setServiceNameList(List<String> componentNames, int userId) { |
| if (componentNames == null || componentNames.isEmpty()) { |
| Settings.Secure.putStringForUser( |
| mContext.getContentResolver(), mProperty, null, userId); |
| return; |
| } |
| StringBuilder builder = new StringBuilder(componentNames.get(0)); |
| for (int i = 1; i < componentNames.size(); i++) { |
| builder.append(COMPONENT_NAME_SEPARATOR); |
| builder.append(componentNames.get(i)); |
| } |
| Settings.Secure.putStringForUser( |
| mContext.getContentResolver(), mProperty, builder.toString(), userId); |
| } |
| |
| private String[] parseColonDelimitedServiceNames(String serviceNames) { |
| final Set<String> delimitedServices = new ArraySet<>(); |
| if (!TextUtils.isEmpty(serviceNames)) { |
| final TextUtils.SimpleStringSplitter splitter = mStringColonSplitter; |
| splitter.setString(serviceNames); |
| while (splitter.hasNext()) { |
| final String str = splitter.next(); |
| if (TextUtils.isEmpty(str)) { |
| continue; |
| } |
| delimitedServices.add(str); |
| } |
| } |
| String[] delimitedServicesArray = new String[delimitedServices.size()]; |
| return delimitedServices.toArray(delimitedServicesArray); |
| } |
| } |