// Copyright (c) 2006-2009 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:

// IPProto Tier Manager

// 

//

/**

 @file

 @internalComponent

*/

#include <comms-infras/ss_log.h>

#include <comms-infras/ss_coreprstates.h>

#include <comms-infras/ss_corepractivities.h>

#include <comms-infras/coretiermanagerstates.h>

#include <comms-infras/coretiermanageractivities.h>

#include <comms-infras/coretiernotificationactivity.h>

#include <comms-infras/coretiernotificationstates.h>

#include "IPProtoTierManager.h"

#include "IPProtoTierManagerSelector.h"

#include <comms-infras/ss_metaconnprov.h>

#include <in_sock.h>

#ifdef SYMBIAN_TRACE_ENABLE

#define KIPProtoTierMgrTag KESockMetaConnectionTag

// _LIT8(KIPProtoTierMgrSubTag, "ipprototiermgr");

#endif // SYMBIAN_TRACE_ENABLE

using namespace Messages;

using namespace MeshMachine;

using namespace ESock;

using namespace NetStateMachine;

using namespace TMActivities;

using namespace CorePanics;

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

// Panics

#ifdef _DEBUG

_LIT (KIpProtoTMPanic,"IpProtoTMPanic");

#endif

//This transition creates a link between legacy NetMCpr & legacy CLinkPrefsSelector

DEFINE_SMELEMENT(IpProtoTMStates::TSelectProvider, NetStateMachine::MStateTransition, IpProtoTMStates::TContext)

void IpProtoTMStates::TSelectProvider::DoL()

	{

	__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KIpProtoTMPanic, KPanicNoActivity));

	CSelectProviderActivity* act = static_cast<CSelectProviderActivity*>(iContext.iNodeActivity);

	//Create selector

	act->iSelector = iContext.Node().DoCreateProviderSelectorL(message_cast<TCFSelector::TSimpleSelect>(iContext.iMessage).iSelectionPrefs);

	TBool isItLegacyMcpr = EFalse;

	//First assumption: At this layer (IpProto) all SelectProvider requests are always comming from MCprs.

#if !defined(__GCCXML__)

	CMetaConnectionProviderBase& mcpr = mnode_cast<CMetaConnectionProviderBase>(address_cast<TNodeId>(iContext.iSender).Node());

#else

	CMetaConnectionProviderBase& mcpr =

		reinterpret_cast<CMetaConnectionProviderBase&>(address_cast<TNodeId>(iContext.iSender).Node());

#endif

	//Second assumption: All MCprs at an upper layer (above IpProto) use the Instance() to indicate that they are legacy.

	if (mcpr.ProviderInfo().Instance() !=0) 

		{ //We have a legacy provider above us

		ASSERT(mcpr.ProviderInfo().TierId() == TUid::Uid(KAfInet)); //Here we can partially test the second assumption

		ASimpleSelectorBase& baseselector = static_cast<ASimpleSelectorBase&>(*act->iSelector);

		if (baseselector.TypeId() == CLinkPrefsSelector::KUid)

			{

			CLinkPrefsSelector& selector = static_cast<CLinkPrefsSelector&>(*act->iSelector);

			selector.iLegacyMCpr = &mcpr;

			isItLegacyMcpr = ETrue;

			}

		}

	if (!isItLegacyMcpr)

		{

		//A 399 selection is ongoing. Note: this code is intentionally not generic and needs to be reworking.

		AIpProtoSelectorBase& currentSelector = static_cast<AIpProtoSelectorBase&>(*act->iSelector);

		currentSelector.iNetworkMCpr = &mcpr;

		if (iContext.ActivityId() == ESock::ECFActivityConnectionStartRecovery)

			{

			currentSelector.iReselection = ETrue;

			}

		}

	ISelectionNotify selectionNotify(act,act->InterfaceVTable());

	act->iSelector->SelectL(selectionNotify);

	//Do not do any further processing here as selectors may be returning synchronously (via ISelectionNotify).

	}

DEFINE_SMELEMENT(IpProtoTMStates::TSelectProviderConnPrefList, NetStateMachine::MStateTransition, IpProtoTMStates::TContext)

void IpProtoTMStates::TSelectProviderConnPrefList::DoL()

	{

	__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KIpProtoTMPanic, KPanicNoActivity));

	CSelectProviderActivity* act = static_cast<CSelectProviderActivity*>(iContext.iNodeActivity);

	//Create selector

	//If a ConnPrefList is being used we know what kind of Selector to use

	//(as only one kind supports it) so we can create it without calling

	//the intermidiate DoCreateProviderSelectorL

	act->iSelector = new (ELeave) CIpProtoProviderSelectorConnPrefList(message_cast<TCFSelector::TSelect>(iContext.iMessage).iConnPrefList); 

	//First assumption: At this layer (IpProto) all SelectProvider requests are always comming from MCprs.

#if !defined(__GCCXML__)

	CMetaConnectionProviderBase& mcpr = mnode_cast<CMetaConnectionProviderBase>(address_cast<TNodeId>(iContext.iSender).Node());

#else

	CMetaConnectionProviderBase& mcpr =

		reinterpret_cast<CMetaConnectionProviderBase&>(address_cast<TNodeId>(iContext.iSender).Node());

#endif

	if (mcpr.ProviderInfo().Instance() !=0) 

		{ //We have a legacy provider above us

		ASSERT(mcpr.ProviderInfo().TierId() == TUid::Uid(KAfInet)); //Here we can partially test the second assumption

		ASimpleSelectorBase& baseselector = static_cast<ASimpleSelectorBase&>(*act->iSelector);

		if (baseselector.TypeId() == CLinkPrefsSelector::KUid)

			{

			CLinkPrefsSelector& selector = static_cast<CLinkPrefsSelector&>(*act->iSelector);

			selector.iLegacyMCpr = &mcpr;

			}

		}

	else

		{

		//A 399 selection is ongoing. Note: this code is intentionally not generic and needs to be reworking.

		AIpProtoSelectorBase& currentSelector = static_cast<AIpProtoSelectorBase&>(*act->iSelector);

		currentSelector.iNetworkMCpr = &mcpr;

		if (iContext.ActivityId() == ESock::ECFActivityConnectionStartRecovery)

			{

			currentSelector.iReselection = ETrue;

			}

		}

	ISelectionNotify selectionNotify(act,act->InterfaceVTable());

	act->iSelector->SelectL(selectionNotify);

	//Do not do any further processing here as selectors may be returning synchronously (via ISelectionNotify).

	}

namespace IpProtoTMSelectProviderActivity

{ //Simple parallel activity provider selection, waits untill selection completes (via ISelectionNotify), then gets destroyed

DECLARE_DEFINE_CUSTOM_NODEACTIVITY(ECFActivitySelect, IpProtoTMSelectProvider, TCFSelector::TSimpleSelect, CSelectProviderActivity::NewL)

	FIRST_NODEACTIVITY_ENTRY(TMStates::TAwaitingSelectProvider, MeshMachine::TNoTag)

	NODEACTIVITY_ENTRY(KNoTag, IpProtoTMStates::TSelectProvider, CoreStates::TNeverAccept, MeshMachine::TNoTag)

	LAST_NODEACTIVITY_ENTRY(KNoTag, MeshMachine::TDoNothing)

NODEACTIVITY_END()

}

namespace IpProtoTMSelectProviderConnPrefListActivity

{ //Simple parallel activity provider selection, waits untill selection completes (via ISelectionNotify), then gets destroyed

DECLARE_DEFINE_CUSTOM_NODEACTIVITY(ECFActivitySelect, IpProtoTMSelectConnPrefListProvider, TCFSelector::TSelect, CSelectProviderActivity::NewL)

	FIRST_NODEACTIVITY_ENTRY(TMStates::TAwaitingSelectProviderSuper, MeshMachine::TNoTag)

	NODEACTIVITY_ENTRY(KNoTag, IpProtoTMStates::TSelectProviderConnPrefList, CoreStates::TNeverAccept, MeshMachine::TNoTag)

	LAST_NODEACTIVITY_ENTRY(KNoTag, MeshMachine::TDoNothing)

NODEACTIVITY_END()

}

namespace IpProtoTMActivities

{

DECLARE_DEFINE_ACTIVITY_MAP(stateMap)

	ACTIVITY_MAP_ENTRY(IpProtoTMSelectProviderActivity,IpProtoTMSelectProvider)

	ACTIVITY_MAP_ENTRY(IpProtoTMSelectProviderConnPrefListActivity,IpProtoTMSelectConnPrefListProvider)

ACTIVITY_MAP_END_BASE(TMActivities, coreTMActivities)

}

CIPProtoTierManager* CIPProtoTierManager::NewL(ESock::CTierManagerFactoryBase& aFactory)

	{

 	return new (ELeave) CIPProtoTierManager(aFactory, IpProtoTMActivities::stateMap::Self());

	}

CIPProtoTierManager::CIPProtoTierManager(ESock::CTierManagerFactoryBase& aFactory,

                                         const MeshMachine::TNodeActivityMap& aActivityMap)

:	CCoreTierManager(aFactory,aActivityMap)

	{

	LOG_NODE_CREATE(KIPProtoTierMgrTag, CIPProtoTierManager);

	}

CIPProtoTierManager::~CIPProtoTierManager()

	{

	LOG_NODE_DESTROY(KIPProtoTierMgrTag, CIPProtoTierManager);

	}

ESock::MProviderSelector* CIPProtoTierManager::DoCreateProviderSelectorL(const Meta::SMetaData& aSelectionPreferences)

	{

    return TIpProtoProviderSelectorFactory::NewSelectorL(aSelectionPreferences);

	}

void CIPProtoTierManager::ReceivedL(const TRuntimeCtxId& aSender, const TNodeId& aRecipient, TSignatureBase& aMessage)

	{

   	TNodeContext<CIPProtoTierManager> ctx(*this, aMessage, aSender, aRecipient);

   	CCoreTierManager::Received(ctx);

    User::LeaveIfError(ctx.iReturn);

	}