| /* |
| * Copyright (C) 2019 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.compat; |
| |
| import android.content.Context; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.PackageManager; |
| import android.os.Process; |
| import android.util.Slog; |
| import android.util.StatsLog; |
| |
| import com.android.internal.compat.ChangeReporter; |
| import com.android.internal.compat.CompatibilityChangeConfig; |
| import com.android.internal.compat.IPlatformCompat; |
| import com.android.internal.util.DumpUtils; |
| |
| import java.io.FileDescriptor; |
| import java.io.PrintWriter; |
| |
| /** |
| * System server internal API for gating and reporting compatibility changes. |
| */ |
| public class PlatformCompat extends IPlatformCompat.Stub { |
| |
| private static final String TAG = "Compatibility"; |
| |
| private final Context mContext; |
| private final ChangeReporter mChangeReporter; |
| |
| public PlatformCompat(Context context) { |
| mContext = context; |
| mChangeReporter = new ChangeReporter( |
| StatsLog.APP_COMPATIBILITY_CHANGE_REPORTED__SOURCE__SYSTEM_SERVER); |
| } |
| |
| @Override |
| public void reportChange(long changeId, ApplicationInfo appInfo) { |
| reportChange(changeId, appInfo.uid, |
| StatsLog.APP_COMPATIBILITY_CHANGE_REPORTED__STATE__LOGGED); |
| } |
| |
| @Override |
| public void reportChangeByPackageName(long changeId, String packageName) { |
| ApplicationInfo appInfo = getApplicationInfo(packageName); |
| if (appInfo == null) { |
| return; |
| } |
| reportChange(changeId, appInfo); |
| } |
| |
| @Override |
| public void reportChangeByUid(long changeId, int uid) { |
| reportChange(changeId, uid, StatsLog.APP_COMPATIBILITY_CHANGE_REPORTED__STATE__LOGGED); |
| } |
| |
| @Override |
| public boolean isChangeEnabled(long changeId, ApplicationInfo appInfo) { |
| if (CompatConfig.get().isChangeEnabled(changeId, appInfo)) { |
| reportChange(changeId, appInfo.uid, |
| StatsLog.APP_COMPATIBILITY_CHANGE_REPORTED__STATE__ENABLED); |
| return true; |
| } |
| reportChange(changeId, appInfo.uid, |
| StatsLog.APP_COMPATIBILITY_CHANGE_REPORTED__STATE__DISABLED); |
| return false; |
| } |
| |
| @Override |
| public boolean isChangeEnabledByPackageName(long changeId, String packageName) { |
| ApplicationInfo appInfo = getApplicationInfo(packageName); |
| if (appInfo == null) { |
| return true; |
| } |
| return isChangeEnabled(changeId, appInfo); |
| } |
| |
| @Override |
| public boolean isChangeEnabledByUid(long changeId, int uid) { |
| String[] packages = mContext.getPackageManager().getPackagesForUid(uid); |
| if (packages == null || packages.length == 0) { |
| return true; |
| } |
| boolean enabled = true; |
| for (String packageName : packages) { |
| enabled = enabled && isChangeEnabledByPackageName(changeId, packageName); |
| } |
| return enabled; |
| } |
| |
| @Override |
| public void setOverrides(CompatibilityChangeConfig overrides, String packageName) { |
| CompatConfig.get().addOverrides(overrides, packageName); |
| } |
| |
| @Override |
| public void clearOverrides(String packageName) { |
| CompatConfig config = CompatConfig.get(); |
| config.removePackageOverrides(packageName); |
| } |
| |
| @Override |
| protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| if (!DumpUtils.checkDumpAndUsageStatsPermission(mContext, "platform_compat", pw)) return; |
| CompatConfig.get().dumpConfig(pw); |
| } |
| |
| /** |
| * Clears information stored about events reported on behalf of an app. |
| * To be called once upon app start or end. A second call would be a no-op. |
| * @param appInfo the app to reset |
| */ |
| public void resetReporting(ApplicationInfo appInfo) { |
| mChangeReporter.resetReportedChanges(appInfo.uid); |
| } |
| |
| private ApplicationInfo getApplicationInfo(String packageName) { |
| try { |
| return mContext.getPackageManager().getApplicationInfoAsUser(packageName, 0, |
| Process.myUid()); |
| } catch (PackageManager.NameNotFoundException e) { |
| Slog.e(TAG, "No installed package " + packageName); |
| } |
| return null; |
| } |
| |
| private void reportChange(long changeId, int uid, int state) { |
| mChangeReporter.reportChange(uid, changeId, state); |
| } |
| } |