OSX/libsecurityd/lib/eventlistener.h

   1 /*
   2  * Copyright (c) 2003-2004,2006,2011,2014 Apple 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 #ifndef _H_EVENTLISTENER
  25 #define _H_EVENTLISTENER
  26
  27 #include <securityd_client/ssclient.h>
  28 #include <security_utilities/cfmach++.h>
  29 #include <security_utilities/refcount.h>
  30
  31 namespace Security {
  32 namespace SecurityServer {
  33
  34
  35 //
  36 // A CFNotificationDispatcher registers with the local CFRunLoop to automatically
  37 // receive notification messages and dispatch them.
  38 //
  39 class EventListener : public RefCount
  40 {
  41 protected:
  42     bool mInitialized;
  43         NotificationDomain mDomain;
  44         NotificationMask mMask;
  45
  46     static dispatch_once_t queueOnceToken;
  47     static dispatch_queue_t notificationQueue;
  48 public:
  49     static dispatch_queue_t getNotificationQueue();
  50
  51         EventListener(NotificationDomain domain, NotificationMask eventMask);
  52         virtual ~EventListener();
  53
  54     virtual bool initialized()  { return mInitialized; }
  55
  56         virtual void consume(NotificationDomain domain, NotificationEvent event, const CssmData& data);
  57
  58         NotificationDomain GetDomain () {return mDomain;}
  59         NotificationMask GetMask () {return mMask;}
  60
  61     static void FinishedInitialization(EventListener* eventListener);
  62 };
  63
  64 // For backward compatiblity, we remember the client's CFRunLoop when notifications are enabled.
  65 // Use this function to get this run loop, to route notifications back to them on it.
  66 CFRunLoopRef clientNotificationRunLoop();
  67
  68
  69 } // end namespace SecurityServer
  70 } // end namespace Security
  71
  72
  73 #endif