libsecurity_cssm/lib/modload_plugin.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 // modload_plugin - loader interface for dynamically loaded plugin modules
  27 //
  28 #ifndef _H_MODLOAD_PLUGIN
  29 #define _H_MODLOAD_PLUGIN
  30
  31 #include "modloader.h"
  32
  33
  34 namespace Security {
  35
  36
  37 //
  38 // A LoadablePlugin implements itself as a LoadableBundle
  39 //
  40 class LoadablePlugin : public Plugin, public LoadableBundle {
  41 public:
  42     LoadablePlugin(const char *path);
  43
  44     void load();
  45     void unload();
  46     bool isLoaded() const;
  47
  48         CSSM_SPI_ModuleLoadFunction load;
  49         CSSM_SPI_ModuleUnloadFunction unload;
  50         CSSM_SPI_ModuleAttachFunction attach;
  51         CSSM_SPI_ModuleDetachFunction detach;
  52
  53 private:
  54         PluginFunctions mFunctions;
  55
  56     template <class FunctionType>
  57     void findFunction(FunctionType * &func, const char *name)
  58     { func = (FunctionType *)lookupSymbol(name); }
  59 };
  60
  61
  62 } // end namespace Security
  63
  64
  65 #endif //_H_MODLOAD_PLUGIN