content: /*
   * Copyright (C) 2018 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.net.watchlist;
  
  import android.content.Context;
  import android.content.Intent;
  import android.net.NetworkWatchlistManager;
  import android.os.Binder;
  import android.os.ParcelFileDescriptor;
  import android.os.RemoteException;
  import android.os.ShellCommand;
  import android.provider.Settings;
  
  import java.io.FileInputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.PrintWriter;
  
  /**
   * Network watchlist shell commands class, to provide a way to set temporary watchlist config for
   * testing in shell, so CTS / GTS can use it to verify if watchlist feature is working properly.
   */
  class NetworkWatchlistShellCommand extends ShellCommand {
  
      final Context mContext;
      final NetworkWatchlistService mService;
  
      NetworkWatchlistShellCommand(NetworkWatchlistService service, Context context) {
          mContext = context;
          mService = service;
      }
  
      @Override
      public int onCommand(String cmd) {
          if (cmd == null) {
              return handleDefaultCommands(cmd);
          }
  
          final PrintWriter pw = getOutPrintWriter();
          try {
              switch(cmd) {
                  case "set-test-config":
                      return runSetTestConfig();
                  case "force-generate-report":
                      return runForceGenerateReport();
                  default:
                      return handleDefaultCommands(cmd);
              }
          } catch (Exception e) {
              pw.println("Exception: " + e);
          }
          return -1;
      }
  
      /**
       * Method to get fd from input xml path, and set it as temporary watchlist config.
       */
      private int runSetTestConfig() throws RemoteException {
          final PrintWriter pw = getOutPrintWriter();
          try {
              final String configXmlPath = getNextArgRequired();
              final ParcelFileDescriptor pfd = openFileForSystem(configXmlPath, "r");
              if (pfd != null) {
                  final InputStream fileStream = new FileInputStream(pfd.getFileDescriptor());
                  WatchlistConfig.getInstance().setTestMode(fileStream);
              }
              pw.println("Success!");
          } catch (Exception ex) {
              pw.println("Error: " + ex.toString());
              return -1;
          }
          return 0;
      }
  
      private int runForceGenerateReport() throws RemoteException {
          final PrintWriter pw = getOutPrintWriter();
          final long ident = Binder.clearCallingIdentity();
          try {
              // Reset last report time
              if (WatchlistConfig.getInstance().isConfigSecure()) {
                  pw.println("Error: Cannot force generate report under production config");
                  return -1;
              }
              Settings.Global.putLong(mContext.getContentResolver(),
                      Settings.Global.NETWORK_WATCHLIST_LAST_REPORT_TIME, 0L);
              mService.forceReportWatchlistForTest(System.currentTimeMillis());
              pw.println("Success!");
          } catch (Exception ex) {
              pw.println("Error: " + ex);
              return -1;
          } finally {
              Binder.restoreCallingIdentity(ident);
          }
          return 0;
      }
  
      @Override
      public void onHelp() {
          final PrintWriter pw = getOutPrintWriter();
          pw.println("Network watchlist manager commands:");
          pw.println("  help");
          pw.println("    Print this help text.");
          pw.println("  set-test-config your_watchlist_config.xml");
          pw.println("    Set network watchlist test config file.");
          pw.println("  force-generate-report");
          pw.println("    Force generate watchlist test report.");
      }
  }
  