content: /*
   * Copyright (C) 2016 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.launcher3.util;
  
  import android.app.AppOpsManager;
  import android.content.Context;
  import android.content.Intent;
  import android.content.pm.ApplicationInfo;
  import android.content.pm.LauncherActivityInfo;
  import android.content.pm.PackageManager;
  import android.content.pm.PackageManager.NameNotFoundException;
  import android.content.pm.ResolveInfo;
  import android.net.Uri;
  import android.os.Build;
  import android.os.UserHandle;
  import android.text.TextUtils;
  
  import com.android.launcher3.AppInfo;
  import com.android.launcher3.R;
  import com.android.launcher3.Utilities;
  import com.android.launcher3.compat.LauncherAppsCompat;
  
  import java.net.URISyntaxException;
  import java.util.List;
  
  /**
   * Utility methods using package manager
   */
  public class PackageManagerHelper {
  
      private final Context mContext;
      private final PackageManager mPm;
      private final LauncherAppsCompat mLauncherApps;
  
      public PackageManagerHelper(Context context) {
          mContext = context;
          mPm = context.getPackageManager();
          mLauncherApps = LauncherAppsCompat.getInstance(context);
      }
  
      /**
       * Returns true if the app can possibly be on the SDCard. This is just a workaround and doesn't
       * guarantee that the app is on SD card.
       */
      public boolean isAppOnSdcard(String packageName, UserHandle user) {
          ApplicationInfo info = mLauncherApps.getApplicationInfo(
                  packageName, PackageManager.MATCH_UNINSTALLED_PACKAGES, user);
          return info != null && (info.flags & ApplicationInfo.FLAG_EXTERNAL_STORAGE) != 0;
      }
  
      /**
       * Returns whether the target app is suspended for a given user as per
       * {@link android.app.admin.DevicePolicyManager#isPackageSuspended}.
       */
      public boolean isAppSuspended(String packageName, UserHandle user) {
          ApplicationInfo info = mLauncherApps.getApplicationInfo(packageName, 0, user);
          return info != null && isAppSuspended(info);
      }
  
      public boolean isSafeMode() {
          return mContext.getPackageManager().isSafeMode();
      }
  
      public Intent getAppLaunchIntent(String pkg, UserHandle user) {
          List<LauncherActivityInfo> activities = mLauncherApps.getActivityList(pkg, user);
          return activities.isEmpty() ? null :
                  AppInfo.makeLaunchIntent(activities.get(0));
      }
  
      /**
       * Returns whether an application is suspended as per
       * {@link android.app.admin.DevicePolicyManager#isPackageSuspended}.
       */
      public static boolean isAppSuspended(ApplicationInfo info) {
          // The value of FLAG_SUSPENDED was reused by a hidden constant
          // ApplicationInfo.FLAG_PRIVILEGED prior to N, so only check for suspended flag on N
          // or later.
          if (Utilities.ATLEAST_NOUGAT) {
              return (info.flags & ApplicationInfo.FLAG_SUSPENDED) != 0;
          } else {
              return false;
          }
      }
  
      /**
       * Returns true if {@param srcPackage} has the permission required to start the activity from
       * {@param intent}. If {@param srcPackage} is null, then the activity should not need
       * any permissions
       */
      public boolean hasPermissionForActivity(Intent intent, String srcPackage) {
          ResolveInfo target = mPm.resolveActivity(intent, 0);
          if (target == null) {
              // Not a valid target
              return false;
          }
          if (TextUtils.isEmpty(target.activityInfo.permission)) {
              // No permission is needed
              return true;
          }
          if (TextUtils.isEmpty(srcPackage)) {
              // The activity requires some permission but there is no source.
              return false;
          }
  
          // Source does not have sufficient permissions.
          if(mPm.checkPermission(target.activityInfo.permission, srcPackage) !=
                  PackageManager.PERMISSION_GRANTED) {
              return false;
          }
  
          if (!Utilities.ATLEAST_MARSHMALLOW) {
              // These checks are sufficient for below M devices.
              return true;
          }
  
          // On M and above also check AppOpsManager for compatibility mode permissions.
          if (TextUtils.isEmpty(AppOpsManager.permissionToOp(target.activityInfo.permission))) {
              // There is no app-op for this permission, which could have been disabled.
              return true;
          }
  
          // There is no direct way to check if the app-op is allowed for a particular app. Since
          // app-op is only enabled for apps running in compatibility mode, simply block such apps.
  
          try {
              return mPm.getApplicationInfo(srcPackage, 0).targetSdkVersion >= Build.VERSION_CODES.M;
          } catch (NameNotFoundException e) { }
  
          return false;
      }
  
      public static Intent getMarketIntent(String packageName) {
          return new Intent(Intent.ACTION_VIEW)
                  .setData(new Uri.Builder()
                          .scheme("market")
                          .authority("details")
                          .appendQueryParameter("id", packageName)
                          .build());
      }
  
      /**
       * Creates a new market search intent.
       */
      public static Intent getMarketSearchIntent(Context context, String query) {
          try {
              Intent intent = Intent.parseUri(context.getString(R.string.market_search_intent), 0);
              if (!TextUtils.isEmpty(query)) {
                  intent.setData(
                          intent.getData().buildUpon().appendQueryParameter("q", query).build());
              }
              return intent;
          } catch (URISyntaxException e) {
              throw new RuntimeException(e);
          }
      }
  }
  