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/*
* 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.transparency;
import android.annotation.NonNull;
import android.annotation.SystemService;
import android.content.Context;
import android.os.RemoteException;
import android.util.Slog;
import com.android.internal.os.IBinaryTransparencyService;
import java.util.Map;
/**
* BinaryTransparencyManager defines a number of system interfaces that other system apps or
* services can make use of, when trying to get more information about the various binaries
* that are installed on this device.
* @hide
*/
@SystemService(Context.BINARY_TRANSPARENCY_SERVICE)
public class BinaryTransparencyManager {
private static final String TAG = "TransparencyManager";
private final Context mContext;
private final IBinaryTransparencyService mService;
/**
* Constructor
* @param context The calling context.
* @param service A valid instance of IBinaryTransparencyService.
* @hide
*/
public BinaryTransparencyManager(Context context, IBinaryTransparencyService service) {
mContext = context;
mService = service;
}
/**
* Obtains a string containing information that describes the signed images that are installed
* on this device. Currently, this piece of information is identified as the VBMeta digest.
* @return A String containing the VBMeta Digest of the signed partitions loaded on this device.
*/
@NonNull
public String getSignedImageInfo() {
try {
return mService.getSignedImageInfo();
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
/**
* Returns a map of all installed APEXs consisting of package name to SHA256 hash of the
* package.
* @return A Map with the following entries: {apex package name : sha256 digest of package}
*/
@NonNull
public Map getApexInfo() {
try {
Slog.d(TAG, "Calling backend's getApexInfo()");
return mService.getApexInfo();
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
}
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