eap_method_registrar.hxx

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/* $Id: eap_method_registrar.hxx,v 1.16 2004/06/17 21:13:36 yohba Exp $ */
/* 
   eap_method_registrar.hxx:  class for EAP state machine registration

   Written by Yoshihiro Ohba
   
*/

#ifndef __EAP_METHOD_REGISTRAR_HXX__
#define __EAP_METHOD_REGISTRAR_HXX__

#include <string>
#include <list>
#include <ace/Singleton.h>
#include <ace/Reactor.h>
#include <boost/function/function1.hpp>
#include "eap.hxx"
#include "eap_fsm.hxx"

typedef boost::function1<EapMethodStateMachine*, EapSwitchStateMachine&>
EapMethodStateMachineFunctor;

template <class T> class EapMethodStateMachineCreator
{
public:
  EapMethodStateMachine* operator()(EapSwitchStateMachine &s)
  {
    return new T(s);
  };
};

class EAP_EXPORTS EapMethodTableEntry
{
  friend class EapMethodTable_S;
  friend class EapSwitchStateMachine;
public:
  EapMethodTableEntry(std::string name, EapType type, EapRole role, 
                      EapMethodStateMachineFunctor creator)
  {
    this->name = name;
    this->type = type;
    this->role = role;
    this->creator = creator;
  }
private:
  std::string  name;
  EapType type;
  EapRole role;
  EapMethodStateMachineFunctor creator;
};

class EAP_EXPORTS EapMethodTable_S : public std::list<EapMethodTableEntry*> 
{
  friend class ACE_Singleton<EapMethodTable_S, ACE_Recursive_Thread_Mutex>;
public:

  EapMethodTableEntry *Find(EapType type, EapRole role)
  {
    iterator i;
    for (i=begin(); i!=end(); i++)
      {
        EapMethodTableEntry* e = (*i);
        if (e->type == type && e->role == role) { return e; }
      }
    return NULL;
  }

  inline void add(EapMethodTableEntry *e) { push_back(e); }

private:
  EapMethodTable_S() { registerDefaultMethods(); };
  ~EapMethodTable_S() {};
  void registerDefaultMethods();
};

typedef ACE_Singleton<EapMethodTable_S, ACE_Recursive_Thread_Mutex>
EapMethodTable;

class EAP_EXPORTS EapMethodRegistrar
{
public:
  void registerMethod(std::string name, EapType type, EapRole role, 
                      EapMethodStateMachineFunctor creator);
};
#endif  // __EAP_METHOD_REGISTRAR_HXX__

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