content: /*
   * Copyright (C) 2008 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.commands.svc;
  
  import android.content.Context;
  import android.os.BatteryManager;
  import android.os.IPowerManager;
  import android.os.PowerManager;
  import android.os.RemoteException;
  import android.os.ServiceManager;
  import android.os.SystemClock;
  import android.os.SystemProperties;
  
  public class PowerCommand extends Svc.Command {
      private static final int FORCE_SUSPEND_DELAY_DEFAULT_MILLIS = 0;
  
      public PowerCommand() {
          super("power");
      }
  
      public String shortHelp() {
          return "Control the power manager";
      }
  
      public String longHelp() {
          return shortHelp() + "\n"
                  + "\n"
                  + "usage: svc power stayon [true|false|usb|ac|wireless]\n"
                  + "         Set the 'keep awake while plugged in' setting.\n"
                  + "       svc power reboot [reason]\n"
                  + "         Perform a runtime shutdown and reboot device with specified reason.\n"
                  + "       svc power shutdown\n"
                  + "         Perform a runtime shutdown and power off the device.\n"
                  + "       svc power forcesuspend [t]\n"
                  + "         Force the system into suspend, ignoring all wakelocks.\n"
                  + "         t - Number of milliseconds to wait before issuing force-suspend.\n"
                  + "             Helps with devices that can't suspend while plugged in.\n"
                  + "             Defaults to " + FORCE_SUSPEND_DELAY_DEFAULT_MILLIS + ".\n"
                  + "             When using a delay, you must use the nohup shell modifier:\n"
                  + "             'adb shell nohup svc power forcesuspend [time]'\n"
                  + "         Use caution; this is dangerous. It puts the device to sleep\n"
                  + "         immediately without giving apps or the system an opportunity to\n"
                  + "         save their state.\n";
      }
  
      public void run(String[] args) {
          fail: {
              if (args.length >= 2) {
                  IPowerManager pm = IPowerManager.Stub.asInterface(
                          ServiceManager.getService(Context.POWER_SERVICE));
                  if ("stayon".equals(args[1]) && args.length == 3) {
                      int val;
                      if ("true".equals(args[2])) {
                          val = BatteryManager.BATTERY_PLUGGED_AC |
                                  BatteryManager.BATTERY_PLUGGED_USB |
                                  BatteryManager.BATTERY_PLUGGED_WIRELESS;
                      }
                      else if ("false".equals(args[2])) {
                          val = 0;
                      } else if ("usb".equals(args[2])) {
                          val = BatteryManager.BATTERY_PLUGGED_USB;
                      } else if ("ac".equals(args[2])) {
                          val = BatteryManager.BATTERY_PLUGGED_AC;
                      } else if ("wireless".equals(args[2])) {
                          val = BatteryManager.BATTERY_PLUGGED_WIRELESS;
                      } else {
                          break fail;
                      }
                      try {
                          if (val != 0) {
                              // if the request is not to set it to false, wake up the screen so that
                              // it can stay on as requested
                              pm.wakeUp(SystemClock.uptimeMillis(),
                                      PowerManager.WAKE_REASON_UNKNOWN, "PowerCommand", null);
                          }
                          pm.setStayOnSetting(val);
                      }
                      catch (RemoteException e) {
                          System.err.println("Faild to set setting: " + e);
                      }
                      return;
                  } else if ("reboot".equals(args[1])) {
                      String mode = null;
                      if (args.length == 3) {
                          mode = args[2];
                      }
                      try {
                          // no confirm, wait till device is rebooted
                          pm.reboot(false, mode, true);
                      } catch (RemoteException e) {
                          maybeLogRemoteException("Failed to reboot.");
                      }
                      return;
                  } else if ("shutdown".equals(args[1])) {
                      try {
                          // no confirm, wait till device is off
                          pm.shutdown(false, null, true);
                      } catch (RemoteException e) {
                          maybeLogRemoteException("Failed to shutdown.");
                      }
                      return;
                  } else if ("forcesuspend".equals(args[1])) {
                      int delayMillis = args.length > 2
                              ? Integer.parseInt(args[2]) : FORCE_SUSPEND_DELAY_DEFAULT_MILLIS;
                      try {
                          Thread.sleep(delayMillis);
                          if (!pm.forceSuspend()) {
                              System.err.println("Failed to force suspend.");
                          }
                      } catch (InterruptedException e) {
                          System.err.println("Failed to force suspend: " + e);
                      } catch (RemoteException e) {
                          maybeLogRemoteException("Failed to force-suspend with exception: " + e);
                      }
                      return;
                  }
              }
          }
          System.err.println(longHelp());
      }
  
      // Check if remote exception is benign during shutdown. Pm can be killed
      // before system server during shutdown, so remote exception can be ignored
      // if it is already in shutdown flow.
      private void maybeLogRemoteException(String msg) {
          String powerProp = SystemProperties.get("sys.powerctl");
          if (powerProp.isEmpty()) {
              System.err.println(msg);
          }
      }
  }
  