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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 com.android.server.art;
import static com.android.server.art.DexUseManagerLocal.CheckedSecondaryDexInfo;
import static com.android.server.art.OutputArtifacts.PermissionSettings;
import static com.android.server.art.OutputArtifacts.PermissionSettings.SeContext;
import static com.android.server.art.Utils.Abi;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.content.Context;
import android.os.Build;
import android.os.CancellationSignal;
import androidx.annotation.RequiresApi;
import com.android.internal.annotations.VisibleForTesting;
import com.android.server.art.model.Config;
import com.android.server.art.model.DexoptParams;
import com.android.server.pm.pkg.AndroidPackage;
import com.android.server.pm.pkg.PackageState;
import java.util.List;
/** @hide */
@RequiresApi(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
public class SecondaryDexopter extends Dexopter<CheckedSecondaryDexInfo> {
private static final String TAG = ArtManagerLocal.TAG;
public SecondaryDexopter(@NonNull Context context, @NonNull Config config,
@NonNull PackageState pkgState, @NonNull AndroidPackage pkg,
@NonNull DexoptParams params, @NonNull CancellationSignal cancellationSignal) {
this(new Injector(context, config), pkgState, pkg, params, cancellationSignal);
}
@VisibleForTesting
public SecondaryDexopter(@NonNull Injector injector, @NonNull PackageState pkgState,
@NonNull AndroidPackage pkg, @NonNull DexoptParams params,
@NonNull CancellationSignal cancellationSignal) {
super(injector, pkgState, pkg, params, cancellationSignal);
}
@Override
protected boolean isInDalvikCache() {
// A secondary dex file is added by the app, so it's always in a writable location and hence
// never uses dalvik-cache.
return false;
}
@Override
@NonNull
protected List<CheckedSecondaryDexInfo> getDexInfoList() {
return mInjector.getDexUseManager().getCheckedSecondaryDexInfo(
mPkgState.getPackageName(), true /* excludeObsoleteDexesAndLoaders */);
}
@Override
protected boolean isDexoptable(@NonNull CheckedSecondaryDexInfo dexInfo) {
return true;
}
@Override
protected boolean needsToBeShared(@NonNull CheckedSecondaryDexInfo dexInfo) {
return dexInfo.isUsedByOtherApps();
}
@Override
protected boolean isDexFilePublic(@NonNull CheckedSecondaryDexInfo dexInfo) {
return dexInfo.fileVisibility() == FileVisibility.OTHER_READABLE;
}
@Override
@NonNull
protected List<ProfilePath> getExternalProfiles(@NonNull CheckedSecondaryDexInfo dexInfo) {
// A secondary dex file doesn't have any external profile to use.
return List.of();
}
@Override
@NonNull
protected PermissionSettings getPermissionSettings(
@NonNull CheckedSecondaryDexInfo dexInfo, boolean canBePublic) {
int uid = getUid(dexInfo);
// We need the "execute" bit for "others" even though `canBePublic` is false because the
// directory can contain other artifacts that needs to be public.
// We don't need the "read" bit for "others" on the directories because others only need to
// access the files in the directories, but they don't need to "ls" the directories.
FsPermission dirFsPermission = AidlUtils.buildFsPermission(uid /* uid */, uid /* gid */,
false /* isOtherReadable */, true /* isOtherExecutable */);
FsPermission fileFsPermission =
AidlUtils.buildFsPermission(uid /* uid */, uid /* gid */, canBePublic);
SeContext seContext = AidlUtils.buildSeContext(mPkgState.getSeInfo(), uid);
return AidlUtils.buildPermissionSettings(dirFsPermission, fileFsPermission, seContext);
}
@Override
@NonNull
protected List<Abi> getAllAbis(@NonNull CheckedSecondaryDexInfo dexInfo) {
return Utils.getAllAbisForNames(dexInfo.abiNames(), mPkgState);
}
@Override
@NonNull
protected ProfilePath buildRefProfilePath(@NonNull CheckedSecondaryDexInfo dexInfo) {
return AidlUtils.buildProfilePathForSecondaryRef(dexInfo.dexPath());
}
@Override
@NonNull
protected OutputProfile buildOutputProfile(
@NonNull CheckedSecondaryDexInfo dexInfo, boolean isPublic) {
int uid = getUid(dexInfo);
return AidlUtils.buildOutputProfileForSecondary(dexInfo.dexPath(), uid, uid, isPublic);
}
@Override
@NonNull
protected List<ProfilePath> getCurProfiles(@NonNull CheckedSecondaryDexInfo dexInfo) {
// A secondary dex file can only be loaded by one user, so there is only one profile.
return List.of(AidlUtils.buildProfilePathForSecondaryCur(dexInfo.dexPath()));
}
@Override
@Nullable
protected DexMetadataPath buildDmPath(@NonNull CheckedSecondaryDexInfo dexInfo) {
return null;
}
private int getUid(@NonNull CheckedSecondaryDexInfo dexInfo) {
return dexInfo.userHandle().getUid(mPkgState.getAppId());
}
}
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