eap_standalone_authfsm.cxx

Diameter协议栈

/* BEGIN_COPYRIGHT                                                        */
/*                                                                        */
/* Open Diameter: Open-source software for the Diameter and               */
/*                Diameter related protocols                              */
/*                                                                        */
/* Copyright (C) 2002-2004 Open Diameter Project                          */
/*                                                                        */
/* This library is free software; you can redistribute it and/or modify   */
/* it under the terms of the GNU Lesser General Public License as         */
/* published by the Free Software Foundation; either version 2.1 of the   */
/* License, or (at your option) any later version.                        */
/*                                                                        */
/* This library is distributed in the hope that it will be useful,        */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of         */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU      */
/* Lesser General Public License for more details.                        */
/*                                                                        */
/* You should have received a copy of the GNU Lesser General Public       */
/* License along with this library; if not, write to the Free Software    */
/* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307    */
/* USA.                                                                   */
/*                                                                        */
/* In addition, when you copy and redistribute some or the entire part of */
/* the source code of this software with or without modification, you     */
/* MUST include this copyright notice in each copy.                       */
/*                                                                        */
/* If you make any changes that are appeared to be useful, please send    */
/* sources that include the changed part to                               */
/* [e-mail] so that we can reflect your  */
/* changes to one unified version of this software.                       */
/*                                                                        */
/* END_COPYRIGHT                                                          */
// $Id: eap_standalone_authfsm.cxx,v 1.16 2004/08/10 16:41:06 vfajardo Exp $

// eap_standalone_authfsm.cxx:  StandAlone Authenticator state machine
// Written by Yoshihiro Ohba

#include <ace/Basic_Types.h>
#include <ace/Singleton.h>
#include "eap.hxx"
#include "eap_authfsm.hxx"
#include "eap_policy.hxx"
#include "eap_log.hxx"
#include "eap_parser.hxx"

/// Action class for EAP. 
class EapStandAloneAuthSwitchAction : 
  public AAA_Action<EapStandAloneAuthSwitchStateMachine>
{
 public:
  virtual void operator()(EapStandAloneAuthSwitchStateMachine&) {}
 protected:
  EapStandAloneAuthSwitchAction() {}
  virtual ~EapStandAloneAuthSwitchAction() {}
};

/// State table used by EapAuthSwitchStateMachine.
class EapStandAloneAuthSwitchStateTable_S 
  : public AAA_StateTable<EapStandAloneAuthSwitchStateMachine>
{
  friend class ACE_Singleton<EapStandAloneAuthSwitchStateTable_S, 
			     ACE_Recursive_Thread_Mutex>;
private:
  class AcDisable : public EapStandAloneAuthSwitchAction
  {
    void operator()(EapStandAloneAuthSwitchStateMachine &sm)
    {
      sm.Event(EapAuthSwitchStateMachine::EvSgPortEnabled);
    }
  };

  class AcInitialize : public EapStandAloneAuthSwitchAction
  {
    void operator()(EapStandAloneAuthSwitchStateMachine &sm)
    {
      sm.CurrentIdentifier() = 0;  // Initilize the identifier
      sm.Event(EvUCT);
    }
  };

  class AcSendSuccess : public EapStandAloneAuthSwitchAction
  {
    void operator()(EapStandAloneAuthSwitchStateMachine &sm)
    {
      AAAMessageBlock *msg = AAAMessageBlock::Acquire(4);

      EAP_LOG(LM_DEBUG, "Standalone: Composing Success message.\n");

      // Compose the PDU.
      EapHeaderParser parser;
      EapHeader header;
      header.code = Success;
      header.identifier = sm.CurrentIdentifier();
      header.length = 4;
      parser.setAppData(&header);
      parser.setRawData(msg);
      parser.parseAppToRaw();

      // Stop retransmission timer and reset retransmission counter.
      sm.CancelTimer();
      sm.RetransmissionCount()=0;

      // Make the key available. (not specified in the state machine document.)
      if (sm.KeyData().size()>0)
	sm.KeyAvailable() = true;
	
      // Call Success callback function.
      sm.Success(msg);
      msg->release();
    }
  };

  class AcSendFailure : public EapStandAloneAuthSwitchAction
  {
    void operator()(EapStandAloneAuthSwitchStateMachine &sm)
    {
      AAAMessageBlock *msg = AAAMessageBlock::Acquire(4);
      EAP_LOG(LM_DEBUG, "Standalone: Composing Failure message.\n");

      // Compose the PDU.
      EapHeaderParser parser;
      EapHeader header;
      header.code = Failure;
      header.identifier = sm.CurrentIdentifier();
      header.length = 4;
      parser.setAppData(&header);
      parser.setRawData(msg);
      parser.parseAppToRaw();

      // Stop retransmission timer and reset retransmission counter.
      sm.CancelTimer();
      sm.RetransmissionCount()=0;

      // Call Failure callback function.
      sm.Failure(msg);
      msg->release();
    }
  };

  class AcMethodResponse : public EapStandAloneAuthSwitchAction
  {
    void operator()(EapStandAloneAuthSwitchStateMachine &sm)
    {
      EapMethodStateMachine &msm = sm.MethodStateMachine();
      if (msm.IsDone())
	{
	  if (msm.KeyAvailable())
	    sm.KeyData() = msm.KeyData();
	  sm.MethodState() = EapAuthSwitchStateMachine::END;
	  sm.Event(EapAuthSwitchStateMachine::EvSgEndMethod);
	}
      else
	{
	  sm.MethodState() = EapAuthSwitchStateMachine::CONT;
	  sm.Event(EvElse);
	}
    }
  };

  class AcBuildRequest : public EapStandAloneAuthSwitchAction
  {
    void operator()(EapStandAloneAuthSwitchStateMachine &sm)
    {
      // Calculate the next Identifier for the new request.
      ACE_Byte id = sm.CurrentIdentifier() = 
	sm.MethodStateMachine().GetNextIdentifier(sm.CurrentIdentifier());

      AAAMessageBlock *msg = sm.GetTxMessage();

      // Compose the PDU.
      EapHeaderParser headerParser;
      EapHeader header;
      header.code = Request;
      header.identifier = id;
      header.length = msg->length();
      headerParser.setAppData(&header);
      headerParser.setRawData(msg);
      headerParser.parseAppToRaw();

      // Set the wr_ptr to the tail of the message.
      msg->wr_ptr(msg->base()+header.length);

      sm.Event(EvUCT);
    }
  };

  class AcSendRequest : public EapStandAloneAuthSwitchAction
  {
    void operator()(EapStandAloneAuthSwitchStateMachine &sm)
    {
      // Stop retransmission timer and reset retransmission counter.
      sm.CancelTimer();
      sm.RetransmissionCount()=0;

      AAAMessageBlock *msg = sm.GetTxMessage();

      // Call Send callback function.
      // Increment the retransmission count.
      sm.RetransmissionCount()++;

      // Schedule retransmssion timer
      EAP_LOG(LM_DEBUG, 
	      "Standalone: Request sent and timer started.\n");
      if (sm.RetransmissionEnabled())
	sm.ScheduleTimer(EvTo, sm.RetransmissionInterval());

      sm.Notify(EvUCT);

      // Send the messsage.
      //      cb->Send(msg);
      sm.Send(msg);
    }
  };

  class AcDoIntegrityCheck : public EapStandAloneAuthSwitchAction
  {
    void operator()(EapStandAloneAuthSwitchStateMachine &sm)
    {
      EAP_LOG(LM_DEBUG, "Standalone: Integrity Check.\n");
      sm.MethodStateMachine().Notify
	(EapMethodStateMachine::EvSgIntegrityCheck);
    }
  };

  class AcProposeMethod : public EapStandAloneAuthSwitchAction
  {
    void operator()(EapStandAloneAuthSwitchStateMachine &sm)
    {
      EapType type = sm.Policy().CurrentMethod();

      if (!type.IsVSE())
	EAP_LOG(LM_DEBUG, "Standalone: Trying a legacy method.\n");
      else
	EAP_LOG(LM_DEBUG, "Standalone: Trying an extended method.\n");

      sm.DeleteMethodStateMachine();
      sm.CurrentMethod() = type;
      sm.CreateMethodStateMachine(type, Authenticator);
      sm.MethodStateMachine().Start();

      if (type == EapType(1) || type == EapType(1)) // Identity or Notification
	sm.MethodState() = EapAuthSwitchStateMachine::CONT;
      else
	sm.MethodState() = EapAuthSwitchStateMachine::PROPOSED;

      // Notify method
      sm.MethodStateMachine().Notify
	(EapMethodStateMachine::EvSgIntegrityCheck);
    }
  };

  class AcDoPolicyCheck : public EapStandAloneAuthSwitchAction
  {
    void operator()(EapStandAloneAuthSwitchStateMachine &sm)
    {
      EapAuthSwitchStateMachine::EapAuthDecision decision = sm.Decision();
      if (decision == EapAuthSwitchStateMachine::DecisionSuccess)
	sm.Event(EvSgPolicySat);
      else if (decision == EapAuthSwitchStateMachine::DecisionFailure)
	sm.Event(EvSgPolicyNotSat_EndSess);	
      else // continue
	sm.Event(EvElse);
    }
  };

  class AcDiscard : public EapStandAloneAuthSwitchAction
  {
    void operator()(EapStandAloneAuthSwitchStateMachine &sm)
    {
      EAP_LOG(LM_DEBUG, "Standalone: Message Discarded.\n");
      sm.DiscardCount()++;
      sm.Event(EvUCT);
    }
  };


  class AcDiscard2 : public EapStandAloneAuthSwitchAction
  {
    void operator()(EapStandAloneAuthSwitchStateMachine &sm)