| /* |
| * 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 android.app.sdksandbox; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.content.Context; |
| import android.util.ArrayMap; |
| |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.internal.annotations.VisibleForTesting; |
| |
| import java.util.Map; |
| |
| /** |
| * Maintains a set of services which {@code Manager} classes should have a {@link |
| * SandboxedSdkContext} in case they are running inside a {@code sdk_sandbox} process. |
| * |
| * <p>This class is required to work around the fact that {@link |
| * android.content.ContextWrapper#getSystemService(String)} delegates the call to the base context, |
| * and reimplementing this method in the {@link SandboxedSdkContext} will require accessing hidden |
| * APIs, which is forbidden for Mainline modules. |
| * |
| * <p>Manager classes that want to behave differently in case they are initiated from inside a |
| * {@code sdk_sandbox} process are expected to call {@link #registerServiceMutator(String, |
| * ServiceMutator)} in their initialization code, e.g. {@link |
| * android.adservices.AdServicesFrameworkInitializer#registerServiceWrappers()}. When a {@code SDK} |
| * running inside a {@code sdk_sandbox} process requests a "sdk sandbox aware" manager via {@link |
| * SandboxedSdkContext#getSystemService(String)} the code inside {@link |
| * SandboxedSdkContext#getSystemService(String)} will use the registered {@link ServiceMutator} to |
| * set the correct context. |
| * |
| * @hide |
| */ |
| // TODO(b/242889021): limit this class only to Android T, on U+ we should implement the proper |
| // platform support. |
| public final class SdkSandboxSystemServiceRegistry { |
| |
| @VisibleForTesting |
| public SdkSandboxSystemServiceRegistry() {} |
| |
| private static final Object sLock = new Object(); |
| |
| @GuardedBy("sLock") |
| private static SdkSandboxSystemServiceRegistry sInstance = null; |
| |
| /** Returns an instance of {@link SdkSandboxSystemServiceRegistry}. */ |
| @NonNull |
| public static SdkSandboxSystemServiceRegistry getInstance() { |
| synchronized (sLock) { |
| if (sInstance == null) { |
| sInstance = new SdkSandboxSystemServiceRegistry(); |
| } |
| return sInstance; |
| } |
| } |
| |
| @GuardedBy("mServiceMutators") |
| private final Map<String, ServiceMutator> mServiceMutators = new ArrayMap<>(); |
| |
| /** |
| * Adds a {@code mutator} for the service with given {@code serviceName}. |
| * |
| * <p>This {@code mutator} will be applied inside the {@link |
| * SandboxedSdkContext#getSystemService(String)} method. |
| */ |
| public void registerServiceMutator( |
| @NonNull String serviceName, @NonNull ServiceMutator mutator) { |
| synchronized (mServiceMutators) { |
| mServiceMutators.put(serviceName, mutator); |
| } |
| } |
| |
| /** |
| * Returns a {@link ServiceMutator} for the given {@code serviceName}, or {@code null} if this |
| * {@code serviceName} doesn't have a mutator registered. |
| */ |
| @Nullable |
| public ServiceMutator getServiceMutator(@NonNull String serviceName) { |
| synchronized (mServiceMutators) { |
| return mServiceMutators.get(serviceName); |
| } |
| } |
| |
| /** |
| * A functional interface representing a method on a {@code Manager} class to set the context. |
| * |
| * <p>This interface is required in order to break the circular dependency between {@code |
| * framework-sdsksandbox} and {@code framework-adservices} build targets. |
| */ |
| public interface ServiceMutator { |
| |
| /** Sets a {@code context} on the given {@code service}. */ |
| @NonNull |
| Object setContext(@NonNull Object service, @NonNull Context context); |
| } |
| } |