libsecurity_utilities/lib/powerwatch.h

   1 /*
   2  * Copyright (c) 2000-2001,2003-2004 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24
  25 //
  26 // powerwatch - hook into system notifications of power events
  27 //
  28 #ifndef _H_POWERWATCH
  29 #define _H_POWERWATCH
  30
  31 #include <security_utilities/machserver.h>
  32 #include <IOKit/pwr_mgt/IOPMLib.h>
  33 #include <IOKit/pwr_mgt/IOPMLibPrivate.h>
  34
  35
  36 namespace Security {
  37 namespace MachPlusPlus {
  38
  39
  40 //
  41 // PowerWatcher embodies the ability to respond to power events.
  42 // By itself, it is inert - nobody will call its virtual methods.
  43 // Use one of it subclasses, which take care of "hooking" into an
  44 // event delivery mechanism.
  45 //
  46 class PowerWatcher {
  47 public:
  48     virtual ~PowerWatcher();
  49
  50 public:
  51     virtual void systemWillSleep();
  52     virtual void systemIsWaking();
  53     virtual void systemWillPowerDown();
  54         virtual void systemWillPowerOn();
  55
  56     bool inDarkWake() { return mInDarkWake; }
  57
  58  protected:
  59     bool mInDarkWake;
  60 };
  61
  62
  63 //
  64 // A PowerWatcher that is dispatches events from an IOKit message
  65 //
  66 class IOPowerWatcher : public PowerWatcher {
  67 public:
  68         IOPowerWatcher();
  69         ~IOPowerWatcher();
  70
  71 protected:
  72     io_connect_t mKernelPort;
  73     IONotificationPortRef mPortRef;
  74     io_object_t mHandle;
  75     IOPMConnection mIOPMconn;
  76     dispatch_queue_t mIOPMqueue;
  77
  78     static void ioCallback(void *refCon, io_service_t service,
  79         natural_t messageType, void *argument);
  80
  81     static void
  82     iopmcallback(void * param,  IOPMConnection connection,
  83                  IOPMConnectionMessageToken token,
  84                  IOPMSystemPowerStateCapabilities capabilities);
  85
  86     void setupDarkWake();
  87
  88 };
  89
  90
  91 //
  92 // Hook into a "raw" MachServer object for event delivery
  93 //
  94 class PortPowerWatcher : public IOPowerWatcher, public MachServer::NoReplyHandler {
  95 public:
  96     PortPowerWatcher();
  97
  98     boolean_t handle(mach_msg_header_t *in);
  99 };
 100
 101
 102 //
 103 // Someone should add a RunLoopPowerWatcher class here, I suppose.
 104 // Well, if you need one: Tag, You're It!
 105 //
 106
 107
 108 } // end namespace MachPlusPlus
 109
 110 } // end namespace Security
 111
 112 #endif //_H_POWERWATCH