// 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:

//

/**

 @file

 @internalTechnology

 @prototype

*/

#include <comms-infras/ss_log.h>

#include <elements/sm_core.h>

#include <comms-infras/linkmessages.h>

#include <elements/nm_messages_base.h>

#include <comms-infras/ss_nodemessages_dataclient.h>

#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS

#include <comms-infras/nifagt_internal.h>

#endif

#include "agentscpr.h"

#include "agentscprstates.h"

#include "agentscpractivities.h"

#include "CAgentAdapter.h"

#include "agentmessages.h"

#include <comms-infras/ss_msgintercept.h>

#ifdef _DEBUG

// Panic category for "absolutely impossible!" vanilla ASSERT()-type panics from this module

// (if it could happen through user error then you should give it an explicit, documented, category + code)

_LIT(KSpecAssert_NifManAgtPrCgnts, "NifManAgtPrCgnts");

#endif

#if defined __CFLOG_ACTIVE || defined SYMBIAN_TRACE_ENABLE

#define KAgentSCprTag KESockSubConnectionTag

_LIT8(KAgentSCprSubTag, "agentscpr");

#endif

using namespace Messages;

using namespace MeshMachine;

using namespace ESock;

using namespace NetStateMachine;

/**

Creates an Agent SubConnection Provider

@param aFactory The parent factory which has created the SCPr

@return Pointer to the newly created SCPr

*/

EXPORT_C CAgentSubConnectionProvider* CAgentSubConnectionProvider::NewL(ESock::CSubConnectionProviderFactoryBase& aFactory)

	{

	CAgentSubConnectionProvider* self = new (ELeave) CAgentSubConnectionProvider(aFactory, AgentSCprActivities::agentSCprActivities::Self());

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);

	return self;

	}

/**

Constructor for the Agent SubConnection Provider

@param aFactory The parent factory which created this SCPr

*/

EXPORT_C CAgentSubConnectionProvider::CAgentSubConnectionProvider(CSubConnectionProviderFactoryBase& aFactory,

    const MeshMachine::TNodeActivityMap& aActivityMap)

   : CCoreSubConnectionProvider(aFactory, aActivityMap)

	{

	LOG_NODE_CREATE(KAgentSCprTag, CAgentSubConnectionProvider);

	}

/**

D'tor

*/

EXPORT_C CAgentSubConnectionProvider::~CAgentSubConnectionProvider()

    {

	CleanupProvisioningInfo();

    LOG_NODE_DESTROY(KAgentSCprTag, CAgentSubConnectionProvider);

	}

EXPORT_C void CAgentSubConnectionProvider::CleanupProvisioningInfo()

    {

    if (iAuthenticateInProgress && AgentProvisionInfo()->AgentAdapter())

	   {

	   iAuthenticateInProgress = EFalse;

	   AgentProvisionInfo()->AgentAdapter()->CancelAuthenticate();

	   }

	CAgentAdapter* agentAdapter(AgentProvisionInfo()->AgentAdapter());

	const_cast<CAgentProvisionInfo*>(AgentProvisionInfo())->SetAgentAdapter(NULL);

	delete agentAdapter;

	// Remove ourselves from the notification handler, or delete it entirely if we own it

	CAgentNotificationHandler* handler = AgentProvisionInfo()->AgentNotificationHandler();

	if (handler)

	    {

	    if (iScprOwnedNotificationHandler)

	        {

	        const_cast<CAgentProvisionInfo*>(AgentProvisionInfo())->SetAgentNotificationHandler(NULL);

	        delete handler;

	        }

        else

            {

            handler->Initialise(NULL);

            }

	    }

    }

/**

Mesh machine message entry point

*/

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

	{

	ESOCK_DEBUG_MESSAGE_INTERCEPT(aSender, aMessage, aRecipient);

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

	CCoreSubConnectionProvider::Received(ctx);

	User::LeaveIfError(ctx.iReturn);

	}

TInt CAgentSubConnectionProvider::PostMessageToFlow(const TRuntimeCtxId& aSender, const TSignatureBase& aMessage)

   {

   // There can only ever be one flow for an AgentSCpr

   RNodeInterface* dataClient = this->GetFirstClient<TDefaultClientMatchPolicy>(TClientType(TCFClientType::EData));

   if (!dataClient)

      {

      return KErrNotFound;

      }

   dataClient->PostMessage(aSender, aMessage);

   return KErrNone;

   }

/**

Retrieves the Agent Provider specific provisioning information as given by the MCPr

transition.

@internalTechnology

*/

EXPORT_C const CAgentProvisionInfo* CAgentSubConnectionProvider::AgentProvisionInfo() const

    {

    const CAgentProvisionInfo* agentProvisionInfo = static_cast<const CAgentProvisionInfo*>(AccessPointConfig().FindExtension(CAgentProvisionInfo::TypeId()));

	__ASSERT_DEBUG(agentProvisionInfo, User::Panic(KSpecAssert_NifManAgtPrCgnts, 1));

    return agentProvisionInfo;

    }

/**

Starts the agent connection process

*/

EXPORT_C void CAgentSubConnectionProvider::ConnectAgent(TAgentConnectType aConnectType)

    {

    AgentProvisionInfo()->AgentAdapter()->ConnectAgent(aConnectType);

    }

/**

Notifies an event to the AgentSCpr's Agent via the AgentAdapter

*/

EXPORT_C TInt CAgentSubConnectionProvider::NotificationToAgent(TFlowToAgentEventType aEvent, TAny* aInfo)

    {

    return AgentProvisionInfo()->AgentAdapter()->NotificationToAgent(aEvent, aInfo);

    }

/**

Called from the StartAgent state transition

*/

void CAgentSubConnectionProvider::StartAgentL()

    {

    SetActivityIdForAdapter(ECFActivityStartDataClient);

    if (!AgentProvisionInfo()->AgentAdapter())

        {

        CAgentNotificationHandler* handler = AgentProvisionInfo()->AgentNotificationHandler();

        if (!handler)

            {

            // Ensure something is present to forward msgs to the flow

            // Normally the MCPr will own the handler, we must only delete if we created it

            handler = CAgentNotificationHandler::NewL();

            iScprOwnedNotificationHandler = ETrue;

            const_cast<CAgentProvisionInfo*>(AgentProvisionInfo())->SetAgentNotificationHandler(handler);

            }

        handler->Initialise (this);

        const_cast<CAgentProvisionInfo*>(AgentProvisionInfo())->SetAgentAdapter (CAgentAdapter::NewL(*this, AgentProvisionInfo()->AgentName()));

        }

	CAgentAdapter::TAgentState agtState = AgentProvisionInfo()->AgentAdapter()->AgentState();

    // Should never get a TStart whilst we are disconnecting

    __ASSERT_DEBUG(agtState != CAgentAdapter::EDisconnecting, User::Panic(KSpecAssert_NifManAgtPrCgnts, 2));

	if (agtState == CAgentAdapter::EDisconnected)

        {

        ConnectAgent(EAgentStartDialOut);

        }

    else if (agtState == CAgentAdapter::EConnected)

        {

        RClientInterface::OpenPostMessageClose(Id(), TNodeCtxId(ECFActivityStartDataClient, Id()), TCFServiceProvider::TStarted().CRef());

        iActivityIdForAdapter = KActivityNull;

        }

    // else if AgentState() is EConnecting or EReconnecting we wait for the TStarted

    //      from that operation

   }

/**

Called from the StopAgent state transition

*/

void CAgentSubConnectionProvider::StopAgent(TInt aReason)

    {

    // Agent should have been started, so the agent adapter should exist

    __ASSERT_DEBUG(AgentProvisionInfo()->AgentAdapter(), User::Panic(KSpecAssert_NifManAgtPrCgnts, 3));

    if (AgentProvisionInfo()->AgentAdapter()->AgentState() == CAgentAdapter::EDisconnected)

        {

        RClientInterface::OpenPostMessageClose(Id(), TNodeCtxId(iActivityIdForAdapter, Id()), TCFDataClient::TStopped(KErrDisconnected).CRef());

        iActivityIdForAdapter = KActivityNull;

        }

    else

        {

        iStopRequested = ETrue;

        iStoppingReason = aReason;

        AgentProvisionInfo()->AgentAdapter()->DisconnectAgent(aReason);

        }

    //ProgressL(KConnectionUninitialised);

    }

/**

Upcall from the agent

*/

void CAgentSubConnectionProvider::ServiceStarted()

   {

   CAgentNotificationHandler* handler = AgentProvisionInfo()->AgentNotificationHandler();

   if (handler)

      {

      handler->ServiceStarted ();

      }

   }

/**

Called from the CAgentAdapter. Gets information required by flow into a TCommsBinder

and posts it into this node's mesh machine with a TStarted message

*/

void CAgentSubConnectionProvider::ConnectionUpL()

	{

	__CFLOG_VAR((KAgentSCprTag, KAgentSCprSubTag, _L8("CAgentSubConnectionProvider::ConnectionUpL() - Agent has started")));

    CAgentNotificationHandler* handler = AgentProvisionInfo()->AgentNotificationHandler();

    if (handler)

        {

        handler->ConnectCompleteL();

        }

    // Send connection up message to the SCPr

    RClientInterface::OpenPostMessageClose(Id(), TNodeCtxId(ECFActivityStartDataClient, Id()), TCFServiceProvider::TStarted().CRef());

    iActivityIdForAdapter = KActivityNull;

	}

/**

Called from the CAgentAdapter. Indicates that the agent is now disconnected.

*/

void CAgentSubConnectionProvider::ConnectionDownL()

	{

	// Only send ourselves a DataClientStopped message if we really want to forward

	// it up. That translates to: have we been asked to StopConnection and are

	// we expecting the agent to disconnect, if so then kick the mesh machine

	// with a TStopped message

	if (iStopRequested)

	    {

    	__CFLOG_VAR((KAgentSCprTag, KAgentSCprSubTag, _L8("CAgentSubConnectionProvider::ConnectionDownL() - Agent has stopped by request")));

    	// Send connection down message to self (this is really like the TStopped message coming up from a lower layer)

    	RClientInterface::OpenPostMessageClose(Id(), TNodeCtxId(iActivityIdForAdapter, Id()), TCFServiceProvider::TStopped(iStoppingReason).CRef());

    	iActivityIdForAdapter = KActivityNull;

    	iStopRequested = EFalse;

	    }

	else

	    {

	    }

	}

/**

Called from the CAgentAdapter. Indicates that the agent has finished getting

authentication data by whatever means it chooses.

*/

void CAgentSubConnectionProvider::AuthenticateCompleteL(TInt aStatus)

   {

   __ASSERT_DEBUG(iActivityIdForAdapter == ECFActivityAuthentication, User::Panic(KSpecAssert_NifManAgtPrCgnts, 4));

   CCredentialsConfig* credentials = AgentProvisionInfo()->Credentials();

   credentials->SetResult (aStatus);

   if (aStatus == KErrNone)

      {

      credentials->SetUserName (iUsername);

      credentials->SetPassword (iPassword);

      }

      else

      {

      credentials->SetUserName (_L(""));

      credentials->SetPassword (_L(""));

      }

   RClientInterface::OpenPostMessageClose(Id(), TNodeCtxId(ECFActivityAuthentication, Id()), TLinkMessage::TAuthenticateResponse().CRef());

   iAuthenticateInProgress = EFalse;

   iActivityIdForAdapter = KActivityNull;

   }

/**

Called from the CAgentAdapter. Indicates that the agent has had a response from

the user deciding whether or not to reconnect

*/

void CAgentSubConnectionProvider::PromptForReconnectComplete(TInt aStatus)

    {

    if (aStatus == KErrNone)

        {

        // Response was to reconnect

        ConnectAgent(EAgentReconnect);

        }

    else

        {

        AgentProvisionInfo()->AgentAdapter()->DisconnectAgent(aStatus);

        }

    }

/**

Posts the progress to the Control Client (SCPr above). There should only ever be

one Control Client for this SCPr.

*/

void CAgentSubConnectionProvider::ProgressL(TInt aStage)

    {

    iLastProgress.iStage = aStage;

    iLastProgress.iError = KErrNone;

    RClientInterface::OpenPostMessageClose(Id(), Id(),

    	TCFMessage::TStateChange(iLastProgress).CRef());

    }

/**

Posts the error to the control clients (Up)

*/

void CAgentSubConnectionProvider::Error(const Elements::TStateChange& aProgress)

    {

    __ASSERT_DEBUG(aProgress.iError, User::Panic(KSpecAssert_NifManAgtPrCgnts, 5));

    iLastProgress = aProgress;

    if (iActivityIdForAdapter != KActivityNull)

        {

        RClientInterface::OpenPostMessageClose(Id(), TNodeCtxId(iActivityIdForAdapter, Id()),

        	TEBase::TError(TCFDataClient::TStart::Id(), iLastProgress.iError).CRef());

        iActivityIdForAdapter = KActivityNull;

        }

    if (CountActivities(ECFActivityStartDataClient))

        {

        __ASSERT_DEBUG(CountActivities(ECFActivityStartDataClient) == 1, User::Panic(KSpecAssert_NifManAgtPrCgnts, 6));

        MeshMachine::CNodeActivityBase* startDataClientActivty = FindActivityById(ECFActivityStartDataClient);

        startDataClientActivty->SetError(iLastProgress.iError);

        TEBase::TCancel cancelMsg;

		TNodeCtxId sender(startDataClientActivty->ActivityId(), Id());

		TNodeCtxId recipient(0, Id());

	    TNodeContext<CAgentSubConnectionProvider> ctx(*this, cancelMsg, sender, recipient);

        startDataClientActivty->Cancel(ctx);

        }

    }

void CAgentSubConnectionProvider::NetworkAdaptorEvent(TNetworkAdaptorEventType aEventType, TUint aEvent, const TDesC8& aEventData, TAny* /*aSource*/)

    {

	if(aEventType == EAgentOriginatedConnectionCommand)

	// added to allow agent to generate connection control commands, such as Stop()

		{

		if(aEvent == EAgentConnectionCommandStop)

			{

			__ASSERT_DEBUG(aEventData.Length()==sizeof(TInt), User::Panic(KSpecAssert_NifManAgtPrCgnts, 7));

			TInt errorCode = *(reinterpret_cast<const TInt*>(aEventData.Ptr()));

			CancelStartOrSendStopToSelf(errorCode);

			}

		}

	else if(aEventType == EEtelEvent)

		{

		if (aEvent == ECurrentNetworkChangeEvent)

			{

			// This is a very specific event for CDMA2000 which is essentially for backwards

			// compatibility with old architecture.  The PSD Agent generates this event to indicate

			// a zone change.  This event needs to be propagated to the Network Config Daemon (NetCfgExt),

			// which is done here.  Technically, the PSD Agent should not be listening for this

			// specific ETel event - the NetCfgExt should be listening directly for the event and handling it

			// itself.  However, this change isn't currently the case hence this forwarding code is present.

			// This should be removed if zone change events are (ever) moved from PSD Agent to NetCfg Daemon.

			TLinkMessage::TAgentEventNotification msg(aEventType, aEvent);

	        PostToClients<TDefaultClientMatchPolicy>(Id(), msg, TClientType(TCFClientType::ECtrl));

			}

		}

    }

void CAgentSubConnectionProvider:: CancelStartOrSendStopToSelf(TInt aError)

/**

Issue a TCFDataClient::TStop message to ourselves.

Used to initiate the stop activity internally when requested from an Agent.

@param aError error code in TCFDataClient::TStop message.

*/

	{

#ifdef SYMBIAN_NETWORKING_CSDAGENT_BCA_SUPPORT	

	if(CountActivities(ECFActivityStartDataClient))

		{

		Elements::TStateChange aProgress;

		aProgress.iError=aError;

		Error(aProgress);

		}

	else

		{

		RClientInterface::OpenPostMessageClose(Id(), Id(), TCFDataClient::TStop(aError).CRef());

		}

#else

		RClientInterface::OpenPostMessageClose(Id(), Id(), TCFDataClient::TStop(aError).CRef());

#endif	

	}

TInt CAgentSubConnectionProvider::NotificationFromAgent(TAgentToFlowEventType aEvent, TAny* aInfo)

    {

    if (aEvent == EAgentToNifEventTypeDisableConnection)

    	{

#ifdef SYMBIAN_NETWORKING_CSDAGENT_BCA_SUPPORT		

		TInt errorCode = KErrCancel;

		if (NULL != aInfo)

			{			

			errorCode = reinterpret_cast<const TInt>(aInfo);

			__ASSERT_DEBUG(errorCode < KErrNone, User::Panic(KSpecAssert_NifManAgtPrCgnts, 8));

			}

		// Request from agent to disconnect using error code specified from agent

		CancelStartOrSendStopToSelf(errorCode);

#else

		CancelStartOrSendStopToSelf(KErrCancel);

#endif

    	}

    else

    	{

	    CAgentNotificationHandler* handler = AgentProvisionInfo()->AgentNotificationHandler();

	    if (handler)

	        {

	        return handler->NotificationFromAgent(aEvent, aInfo);

	        }

    	}

    return KErrNotSupported;

    }

void CAgentSubConnectionProvider::NotificationFromFlow(TFlowToAgentEventType aEvent)

    {

   	CAgentNotificationHandler* handler = AgentProvisionInfo()->AgentNotificationHandler();

   	if (handler)

       	{

       	handler->NotificationFromFlow(aEvent);

       	}

    }