// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// Implementation file for the PDP Context Finite State Machine

// 

//

/**

 @file 

*/

#include "PDPFSM.h"

#include "cpdpfsmfactory.h"

#include "spudfsmdebuglogger.h"

#include "UmtsGprs_defaultSubconnProv.h"

//-=========================================================

// Custom methods

//-=========================================================

CPdpFsmInterface::CPdpFsmInterface(CUmtsGprsDefaultSubConnProvd& aOwner)

:iPdpFsmFactory(NULL), 

 iNetworkStatus(RPacketService::EStatusUnattached),

 iDefaultSubConnProvd(aOwner)

    {

	SPUDFSMVERBOSE_FNLOG("CPdpFsmInterface::()");

    }

CPdpFsmInterface::~CPdpFsmInterface()

    {

	SPUDFSMVERBOSE_FNLOG("CPdpFsmInterface::()");

	CPdpFsmInterface::Close();

	delete iPdpFsmFactory;

    }

void CPdpFsmInterface::SpudInput(TContextId aPdpId, TInt aNotification, TInt aParam)

    {

    switch (aNotification)

        {  

          //------------------------------

          // responses - these are explicitly responses to previously issued requests.

          //             These should only reach the entity that sent the request.

          //------------------------------

          case KContextTFTModifiedEvent:

             {

             TTFTOperationCode opCode;

             Get(aPdpId, opCode);

             if (opCode == KDeleteTFT && aParam == KErrNone)

                {

                //captured response to a successful delete TFT request. We now

                //have a new default.

                #ifdef _DEBUG

                TTFTInfo ttfinfo;

                Get(aPdpId, ttfinfo);

                ASSERT(ttfinfo.FilterCount() == 0);

                #endif //_DEBUG

                iDefaultSubConnProvd.NewDefaultElected(aPdpId);

                }

             iSpudManInterface.Input(aPdpId, aNotification, aParam);

             }

             break;

          case KSecondaryContextCreated:

          case KContextQoSSetEvent:

          case KContextActivateEvent:

          case KContextModifyActiveEvent:

             {

             if (aPdpId == iDefaultSubConnProvd.GetContextId())

                {

                TBool handled = iDefaultSubConnProvd.PdpFsmEvent(aPdpId, aNotification, aParam);

                if (!handled)

                    {

                    // Chances are the default context is in fact a promoted secondary context

                    // We must be careful to make sure that GuQoS gets the notification it expects

                    // otherwise it can cause problems. On the other hand if it gets notifications

                    // or events its not expecting it will Panic.

                    iSpudManInterface.Input(aPdpId, aNotification, aParam);

                    }

                }

             else

                {

                iSpudManInterface.Input(aPdpId, aNotification, aParam);

                }

             }

             break;

          //------------------------------

          // events - Received either as responses to previously sent requests

          //          or as indications of network initiated actions.

          //------------------------------

          case KContextDeleteEvent:

          case KNetworkStatusEvent:

          case KContextParametersChangeEvent:

          case KContextBlockedEvent:

          case KContextUnblockedEvent:

          case KPrimaryContextCreated:

          case KGetNegQoSEvent:

             {

             if ( aPdpId == iDefaultSubConnProvd.GetContextId() || aPdpId == KAllContexts)

                {

                iDefaultSubConnProvd.PdpFsmEvent(iDefaultSubConnProvd.GetContextId(), aNotification, aParam);

                }

             iSpudManInterface.Input(aPdpId, aNotification, aParam);

             }

             break;

        }

    }

//-=========================================================

// MPdpFsmInterface methods

//-=========================================================

/** request to open the FSM

@param aSpudManInterface reference to SpudMan interface

*/

void CPdpFsmInterface::OpenL(MSpudManInterface * aSpudManInterface, TName& aTsyName)

    {

	SPUDFSMVERBOSE_FNLOG("CPdpFsmInterface::OpenL()");

	if (aSpudManInterface == NULL)

	    {

		User::Leave(KErrBadHandle);

		}

	iSpudManInterface.Init(aSpudManInterface);

	iPdpFsmFactory = CPdpFsmFactory::NewL();

	iPdpFsmFactory->InitL(aTsyName, this);

    }

/** closes the FSM and frees underlying resources

*/

void CPdpFsmInterface::Close()

    {

	SPUDFSMVERBOSE_FNLOG("CPdpFsmInterface::Close()");

    iSpudManInterface.Close ();

	if (iPdpFsmFactory)

	    {

		iPdpFsmFactory->Close();

	    }

    }

/** 

 Performs and input action/notification for context ID aPdpId

 If aPdpId is KAllContexts, the notification is sent to every context, unless it is of type EServiceStatusChangeNetwork

@param aPdpId the PDP context ID, 0 to KMaxPdpContexts

@param aOperation the operation id to perform

@param aParam extra id for ETelDriver errors

@return error code for the synchronus patrt of the operation

*/

TInt CPdpFsmInterface::Input(TContextId aPdpId, const TInt aOperation, const TInt aParam)

    {

	TInt ret = KErrNone;

	SPUDFSMVERBOSE_FNLOG("CPdpFsmInterface::Input(aParam)");

	ASSERT(iPdpFsmFactory);

    // Control structure is in order of the most frequent operation first (hopefully)

    //

	if (iPdpFsmFactory->ContextIsValid(aPdpId))

	    {

	    // We have a valid PDP FSM Context, so go ahead with the operation...

	    //

	    ret = (iPdpFsmFactory->GetFsmContext(aPdpId))->Input(aOperation, aParam);

		if (aOperation == PdpFsm::EContextStatusChangeNetwork && aParam != KErrNone)

			{

			SPUDFSMVERBOSE_LOG1(_L("iSpudManInterface.SetContextTerminationErrorAndStop %d"),aParam);

			iSpudManInterface.SetContextTerminationErrorAndStop(aPdpId, aParam);

			}

        // Recovering memory by deleting the Fsm Context

        //

        // Tricky, definitely don't try with 'SpudMan::EContextDelete' it's far too early.

        // You can get a bit further deleting on 'PdpFsm::EContextDeleted' (and 'PdpFsm::EContextDeletedFailed')

        // from TContextDeleteStrategy::NotifyFsm(), but you then find that GuQoS is calling into Spud in order to

        // transfer data from the deleted context to another...

        //

        // Additionally, the spud unit test is expecting to be able to "reuse" deleted contexts...

	    }

	else if (aPdpId == KAllContexts)

	    {

		TInt err = KErrNone;

		// this has to be here to avoid sending it from every context

		//

		if (aOperation == PdpFsm::EServiceStatusChangeNetwork)

		    {	

			iPdpFsmFactory->SpudInput(KAllContexts, KNetworkStatusEvent, KErrNone);

		    }

		else

		    {

			for (TContextId i = 0; (i < KMaxPdpContexts) && iPdpFsmFactory->HaveFsmContext(i); i++)

			    {

		        // Process any current PDP contexts.

		        err = (iPdpFsmFactory->GetFsmContext(i))->Input(aOperation, aParam);

                // See above about trials and tribulations of trying to recover the memory taken by these 

                // CPdpFsm objects.

				if (err != KErrNone)

				    {

				    // We return the last error found, ignoring any earlier ones

				    //

					ret = err;

				    }

			    }

		    }		

        }

	else

	    {

		ret = KErrBadHandle;

	    }

	return ret;

    }

#ifdef SYMBIAN_NETWORKING_UMTSR5

void CPdpFsmInterface::SetIMCNSignalling(TBool aImCnSignalling)

/**

Sets the IM CN signalling Parameters

@param aImCnSignalling The status of the IMCN signalling Flag

*/

	{

	TRAP_IGNORE(iDefaultSubConnProvd.AddIMCNInformationToParameterBundleL(aImCnSignalling));

	}	

/**

Set context parameters

@param aPdpId - the PDP context ID, 0 to KMaxPdpContexts - 1

@param aParam - RPacketQoS::TQoSR5Requested data to set

@return - KErrBadHandle or KErrNone

*/

TInt CPdpFsmInterface::Set(TContextId aPdpId, const RPacketQoS::TQoSR5Requested& aParam)

{

	SPUDFSMVERBOSE_FNLOG("CPdpFsmInterface::Set(RPacketQoS::TQoSR5Requested)");

	ASSERT(iPdpFsmFactory);

	ASSERT(iPdpFsmFactory->ContextIdIsValid(aPdpId));

	 TInt ret;

    if (!iPdpFsmFactory->HaveFsmContext(aPdpId))

        {

        if ((ret = iPdpFsmFactory->NewFsmContext(aPdpId)) != KErrNone)

            {

            return ret;

            }

        }

	iPdpFsmFactory->GetFsmContext(aPdpId)->Set(aParam);

	return KErrNone;

}

/**

Set context parameters

@param aPdpId - the PDP context ID, 0 to KMaxPdpContexts - 1

@param aParam - RPacketQoS::TQoSR5Negotiated data to set

@return - KErrBadHandle or KErrNone

*/

TInt CPdpFsmInterface::Set(TContextId aPdpId, const RPacketQoS::TQoSR5Negotiated& aParam)

{

	SPUDFSMVERBOSE_FNLOG("CPdpFsmInterface::Set(RPacketQoS::TQoSR5Negotiated)");

	ASSERT(iPdpFsmFactory);

	ASSERT(iPdpFsmFactory->ContextIdIsValid(aPdpId));

	TInt ret;

    if (!iPdpFsmFactory->HaveFsmContext(aPdpId))

        {

        if ((ret = iPdpFsmFactory->NewFsmContext(aPdpId)) != KErrNone)

            {

            return ret;

            }

        }

	iPdpFsmFactory->GetFsmContext(aPdpId)->Set(aParam);

	return KErrNone;

}

#else

// !SYMBIAN_NETWORKING_UMTSR5

/**

Set context parameters

@param aPdpId - the PDP context ID, 0 to KMaxPdpContexts

@param aParam - RPacketQoS::TQoSR99_R4Requested data to set

@return - KErrBadHandle or KErrNone

*/

TInt CPdpFsmInterface::Set(TContextId aPdpId, const RPacketQoS::TQoSR99_R4Requested& aParam)

    {

	SPUDFSMVERBOSE_FNLOG("CPdpFsmInterface::Set(RPacketQoS::TQoSR99_R4Requested)");

	ASSERT(iPdpFsmFactory);

    ASSERT(iPdpFsmFactory->ContextIdIsValid(aPdpId));

    TInt ret;

    if (!iPdpFsmFactory->HaveFsmContext(aPdpId))

        {

        if ((ret = iPdpFsmFactory->NewFsmContext(aPdpId)) != KErrNone)

            {

            return ret;

            }

        }

    iPdpFsmFactory->GetFsmContext(aPdpId)->Set(aParam);

	return KErrNone;

    }

/**

Set context parameters

@param aPdpId - the PDP context ID, 0 to KMaxPdpContexts

@param aParam - RPacketQoS::TQoSR99_R4Negotiated data to set

@return - KErrBadHandle or KErrNone

*/

TInt CPdpFsmInterface::Set(TContextId aPdpId, const RPacketQoS::TQoSR99_R4Negotiated& aParam)

    {

	SPUDFSMVERBOSE_FNLOG("CPdpFsmInterface::Set(RPacketQoS::TQoSR99_R4Negotiated)");

	ASSERT(iPdpFsmFactory);

	ASSERT(iPdpFsmFactory->ContextIdIsValid(aPdpId));

    TInt ret;

    if (!iPdpFsmFactory->HaveFsmContext(aPdpId))

        {

        if ((ret = iPdpFsmFactory->NewFsmContext(aPdpId)) != KErrNone)

            {

            return ret;

            }

        }

	iPdpFsmFactory->GetFsmContext(aPdpId)->Set(aParam);

	return KErrNone;

    }

#endif 

// SYMBIAN_NETWORKING_UMTSR5 

/** Set context parameters

@param aPdpId - the PDP context ID, 0 to KMaxPdpContexts

@param aParam - TFTInfo data to set

@return - KErrBadHandle or KErrNone

*/

TInt CPdpFsmInterface::Set(TContextId aPdpId, const TTFTInfo& aParam)

    {

	SPUDFSMVERBOSE_FNLOG("CPdpFsmInterface::Set(TFTInfo)");

	ASSERT(iPdpFsmFactory);

	ASSERT(iPdpFsmFactory->ContextIdIsValid(aPdpId));

    TInt ret;

    if (!iPdpFsmFactory->HaveFsmContext(aPdpId))

        {

        if ((ret = iPdpFsmFactory->NewFsmContext(aPdpId)) != KErrNone)

            {

            return ret;

            }

        }

	iPdpFsmFactory->GetFsmContext(aPdpId)->Set(aParam);

	return KErrNone;

    }

/** Set context parameters

@param aPdpId - the PDP context ID, 0 to KMaxPdpContexts

@param aParam - TFTOperationCode to set to go with the data

@return - KErrBadHandle or KErrNone

*/

TInt CPdpFsmInterface::Set(TContextId aPdpId, const TTFTOperationCode& aParam)

    {

	SPUDFSMVERBOSE_FNLOG("CPdpFsmInterface::Set(TTFTOperationCode)");

	ASSERT(iPdpFsmFactory);

	ASSERT(iPdpFsmFactory->ContextIdIsValid(aPdpId));

    TInt ret;

    if (!iPdpFsmFactory->HaveFsmContext(aPdpId))

        {

        if ((ret = iPdpFsmFactory->NewFsmContext(aPdpId)) != KErrNone)

            {

            return ret;

            }

        }

	iPdpFsmFactory->GetFsmContext(aPdpId)->Set(aParam);

	return KErrNone;

    }

/** Set context parameters

@param aPdpId - the PDP context ID, 0 to KMaxPdpContexts

@param aParam - RPacketContext::TDataChannelV2 data to set

@return - KErrBadHandle or KErrNone

*/

TInt CPdpFsmInterface::Set(TContextId aPdpId, const RPacketContext::TDataChannelV2& aParam)

    {

	SPUDFSMVERBOSE_FNLOG("CPdpFsmInterface::Set(RPacketContext::TDataChannelV2)");

	ASSERT(iPdpFsmFactory);

	ASSERT(iPdpFsmFactory->ContextIdIsValid(aPdpId));

    TInt ret;

    if (!iPdpFsmFactory->HaveFsmContext(aPdpId))

        {

        if ((ret = iPdpFsmFactory->NewFsmContext(aPdpId)) != KErrNone)

            {

            return ret;

            }

        }

	iPdpFsmFactory->GetFsmContext(aPdpId)->Set(aParam);

	return KErrNone;

    }

/** Set context parameters

@param aPdpId - the PDP context ID, 0 to KMaxPdpContexts

@param aParam - RPacketContext::TContextStatus data to set

@return - KErrBadHandle or KErrNone

*/

TInt CPdpFsmInterface::Set(TContextId aPdpId, const RPacketContext::TContextStatus& aParam)

    {

	SPUDFSMVERBOSE_FNLOG("CPdpFsmInterface::Set(RPacketContext::TContextStatus)");

	ASSERT(iPdpFsmFactory);

	ASSERT(iPdpFsmFactory->ContextIdIsValid(aPdpId));

    TInt ret;

    if (!iPdpFsmFactory->HaveFsmContext(aPdpId))

        {

        if ((ret = iPdpFsmFactory->NewFsmContext(aPdpId)) != KErrNone)

            {

            return ret;

            }

        }

	iPdpFsmFactory->GetFsmContext(aPdpId)->Set(aParam);

	return KErrNone;

    }

/** Set context parameters

@param aPdpId - the PDP context ID, 0 to KMaxPdpContexts

@param aParam - RPacketContext::TContextConfigGPRS& data to set

@return - KErrBadHandle or KErrNone

*/

TInt CPdpFsmInterface::Set(TContextId aPdpId, const RPacketContext::TContextConfigGPRS& aParam)

    {

	SPUDFSMVERBOSE_FNLOG("CPdpFsmInterface::Set(RPacketContext::TContextConfigGPRS)");

	ASSERT(iPdpFsmFactory);

	ASSERT(iPdpFsmFactory->ContextIdIsValid(aPdpId));

    TInt ret;

    if (!iPdpFsmFactory->HaveFsmContext(aPdpId))

        {

        if ((ret = iPdpFsmFactory->NewFsmContext(aPdpId)) != KErrNone)

            {

            return ret;

            }

        }

	iPdpFsmFactory->GetFsmContext(aPdpId)->Set(aParam);

	return KErrNone;

    }

/** Set network status

@param aParam - RPacketService::TStatus data to set

*/

void CPdpFsmInterface::Set(const RPacketService::TStatus aParam)

    {

	SPUDFSMVERBOSE_FNLOG("CPdpFsmInterface::Set(RPacketService::TStatus)");

	ASSERT(iPdpFsmFactory);

	iNetworkStatus = aParam;

    }

/** Set ETel termination error and stop context

@param aPdpId - the PDP context ID, 0 to KMaxPdpContexts

@param aErrorCode - the Etel error code detected on this context

*/

void CPdpFsmInterface::SetContextTerminationErrorAndStop(TContextId aPdpId, TInt aErrorCode)

{

	SPUDFSMVERBOSE_FNLOG("CPdpFsmInterface::SetContextTerminationErrorAndStop(TContextId aPdpId, TInt aErrorCode)");

	iSpudManInterface.SetContextTerminationErrorAndStop(aPdpId, aErrorCode);

}

#ifdef SYMBIAN_NETWORKING_UMTSR5

/**

Get context parameters

@param aPdpId - the PDP context ID, 0 to KMaxPdpContexts

@param aParam - RPacketQoS::TQoSR5Requested data to get

@return - KErrBadHandle or KErrNone