/*

* Copyright (c) 2008-2009 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: S60 MCPR states implementation

*

*/

/**

@file s60mcprstates.cpp

S60 MCPR states implementation

*/

#include <cdblen.h>

#include "s60mcprstates.h"

using namespace S60MCprStates;

using namespace ESock;

using namespace Messages;

using namespace MeshMachine;

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

// THandleMPMStatusChange::DoL

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

//

DEFINE_SMELEMENT(THandleMPMStatusChange, NetStateMachine::MStateTransition, TContext)

void THandleMPMStatusChange::DoL()

    {

    TCFControlProvider::TDataClientStatusChange& msg = 

        Messages::message_cast<TCFControlProvider::TDataClientStatusChange>(iContext.iMessage);

    // Get MCPR

    CS60MetaConnectionProvider& node = iContext.Node();

    // Get the policy server's selection result 

    TInt iapid = node.PolicyPrefs().IapId();

    if ( iapid == 0 )

        {

        // Filter zeros out.

        // We don't need information of IPCPR status, we only care real connections.

        }

    else if ( msg.iValue == TCFControlProvider::TDataClientStatusChange::EStarted && 

              node.RequestPermissionToSendStarted() )

        {

        S60MCPRLOGSTRING2("S60MCPR<%x>::THandleMPMStatusChange::DoL() calling IAPConnectionStartedL IAP %d",(TInt*)&iContext.Node(),iapid)

        // TODO use progress notification KLinkLayerOpen once Symbian provides them.

        node.Policy()->IAPConnectionStartedL( iapid );  // codescanner::leave

        }

    else if ( msg.iValue == TCFControlProvider::TDataClientStatusChange::EStopped &&

              node.RequestPermissionToSendStopped() )

        {

        S60MCPRLOGSTRING2("S60MCPR<%x>::THandleMPMStatusChange::DoL() calling IAPConnectionStoppedL IAP %d",(TInt*)&iContext.Node(),iapid)

        // Send request.

        // The problem with IAPConnectionStoppedL() is that to MPM it means

        // that IAP has gone down but actually the provider has just left.

        // policy->IAPConnectionStoppedL( node.iIapId );

        // Hence we mimic the situtation that application leaves the connection.

        node.Policy()->ApplicationLeavesConnectionL( iapid );  // codescanner::leave

        node.Policy()->ApplicationConnectionEndsL();  // codescanner::leave

        }

    }

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

// TReselectBestIAP::DoL

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

//

DEFINE_SMELEMENT(TReselectBestIAP, NetStateMachine::MStateTransition, TContext)

void TReselectBestIAP::DoL()

    {

    S60MCPRLOGSTRING1("S60MCPR<%x>::TReselectBestIAP::DoL()",(TInt*)&iContext.Node())

    // Get MCPR

    CS60MetaConnectionProvider& node = (CS60MetaConnectionProvider&)iContext.Node();

    // Build up the PolicyRequest.

    TConnPref* polpref = (TConnPref*)new ( ELeave ) TPolicyConnPref();  // codescanner::leave

    CleanupStack::PushL( polpref );  // codescanner::leave

    CReselectBestIAPCb* cb = new( ELeave ) CReselectBestIAPCb( node, iContext.iNodeActivity );  // codescanner::leave

    CleanupStack::PushL( cb );  // codescanner::leave

    // Send request

    node.Policy()->ReselectIAPL( polpref, cb );  // codescanner::leave

    // Pop three objects.

    CleanupStack::Pop( cb );

    CleanupStack::Pop( polpref );

    // Pop pref and cb objects.

    }

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

// TRequestReConnect::DoL

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

//

DEFINE_SMELEMENT( TRequestReConnect, NetStateMachine::MStateTransition, TContext )

void TRequestReConnect::DoL() // codescanner::leave

    {

    __ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KS60MCprPanic, KPanicNoActivity));

    S60MCPRLOGSTRING1("S60MCPR<%x>::TRequestReConnect::DoL()",(TInt*)&iContext.Node())

    // We have AP that will go down. 

    // And the other AP that will go up.

    RNodeInterface* stoppingSP = NULL;

    RNodeInterface* startingSP = NULL;

    // The one that will be started is the one MPM selected.

    // Both must be present in the MCPR -plane.

    // Choose Service Providers to work on

    TClientIter<TDefaultClientMatchPolicy> iter = 

        iContext.Node().GetClientIter<TDefaultClientMatchPolicy>(TClientType(TCFClientType::EServProvider));

    RNodeInterface* itf = NULL;

    for ( itf = iter++; ( itf != NULL && ( stoppingSP == NULL || startingSP == NULL ) ); itf = iter++ )

        {

        // Only one of the selected MCPRs can be EStarted.

        //

        if ( itf->Flags() & TCFClientType::EStarted )

            {

            stoppingSP = itf; //Our current started Service Provider.

            itf->ClearFlags( TCFClientType::EActive );

            }

        // The other which is not EStarted must be EActive.

        //

        else if ( itf->Flags() & TCFClientType::EActive )

            {

            startingSP = itf; //And the new one to try next

            }

        }

    // One must be started since this is already a reconnection

    if ( stoppingSP==NULL )

        { 

        // Indication of a serious problem.

        S60MCPRLOGSTRING1("S60MCPR<%x>::TRequestReConnect::DoL() - started service provider not found.",(TInt*)&iContext.Node())

        ASSERT( EFalse );

        User::Leave( KErrCorrupt );  // codescanner::leave

        }

    //Sanity check.

    //The new provider must not be started, there can be only one started at a time.

    ASSERT( startingSP == NULL || ( startingSP->Flags() & TCFClientType::EStarted ) == 0 );

    //If there is no other Service Provider to try, return KErrNotFound

    if ( startingSP == NULL )

        {

        S60MCPRLOGSTRING1("S60MCPR<%x>::TRequestReConnect::DoL() - no more choices, abandoning recovery.",(TInt*)&iContext.Node())

        User::Leave( KErrNotFound );  // codescanner::leave

        }

    //Diagnostinc - there must be a data client or we cannot be here

    __ASSERT_DEBUG(iContext.Node().GetFirstClient<TDefaultClientMatchPolicy>(TClientType(TCFClientType::EData)),

                   User::Panic(KS60MCprPanic, KPanicNoDataClient));

    iContext.iNodeActivity->PostRequestTo( iContext.NodeId(),

                                           TCFMcpr::TReConnect( stoppingSP->RecipientId(), 

                                                                startingSP->RecipientId()).CRef() );

    }

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

// TProcessError::DoL

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

//

DEFINE_SMELEMENT( TProcessError, NetStateMachine::MStateTransition, TContext )

void TProcessError::DoL() // codescanner::leave

    {

    __ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KS60MCprPanic, KPanicNoActivity));

    // Get the MCPR

    CS60MetaConnectionProvider& node = (CS60MetaConnectionProvider&)iContext.Node();

    TInt error( KErrNone );

    // Get the error from the message or from the activity.

    // Since this transition could be triggered from almost anywhere, 

    // give preference to current Message.

    if ( iContext.iMessage.IsMessage<Messages::TEBase::TError>() )

        {

        S60MCPRLOGSTRING1("S60MCPR<%x>::TProcessError::DoL() Using iMessage as error source",(TInt*)&iContext.Node())

        error = message_cast<TEBase::TError>(&iContext.iMessage)->iValue;

        }

    else

        {

        S60MCPRLOGSTRING1("S60MCPR<%x>::TProcessError::DoL() Using CS60ErrorRecoveryActivity as error source",(TInt*)&iContext.Node())

        // Get the activity.

        CS60ErrorRecoveryActivity& activity = 

            static_cast<CS60ErrorRecoveryActivity&>(*iContext.iNodeActivity);

        Messages::TErrContext err =  activity.iOriginalErrContext;

        error = err.iStateChange.iError;

        }

    ASSERT( error != KErrNone );

    // Create the callback that will eventually create the message that completes this state.

    CProcessErrorCb* cb = new( ELeave ) CProcessErrorCb( node, iContext.iNodeActivity );  // codescanner::leave

    CleanupStack::PushL( cb );  // codescanner::leave

    // We always need to ask MPM to handle the error.

    node.Policy()->ProcessErrorL( error, cb );  // codescanner::leave

    CleanupStack::Pop( cb );

    // After this we wait for cancellation/error/completion.

    }

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

// TAwaitingSelectNextLayerCompletedOrError::Accept

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

//

DEFINE_SMELEMENT( TAwaitingSelectNextLayerCompletedOrError, NetStateMachine::MState, TContext )

TBool TAwaitingSelectNextLayerCompletedOrError::Accept()

    {

    TEBase::TError* msg = message_cast<TEBase::TError>(&iContext.iMessage);

    if( msg )

        {

        S60MCPRLOGSTRING1("S60MCPR<%x>::TAwaitingSelectNextLayerCompletedOrError::Accept() TError",(TInt*)&iContext.Node())

        iContext.iNodeActivity->SetError(msg->iValue);

        return ETrue;

        }

    if (iContext.iMessage.IsMessage<TCFSelector::TSelectComplete>())

        {

        if (message_cast<TCFSelector::TSelectComplete>(iContext.iMessage).iNodeId.IsNull())

            {

            S60MCPRLOGSTRING1("S60MCPR<%x>::TAwaitingSelectNextLayerCompletedOrError::Accept() TSelectComplete",(TInt*)&iContext.Node())

            return ETrue;

            }

        //Consume any other TSelectComplete messages

        iContext.iMessage.ClearMessageId();

        }

    return EFalse;

    }

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

// TAwaitingReselectBestIAPCompleteOrError::Accept

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

//

DEFINE_SMELEMENT( TAwaitingReselectBestIAPCompleteOrError, NetStateMachine::MState, TContext )

TBool TAwaitingReselectBestIAPCompleteOrError::Accept()

    {

    if ( iContext.iMessage.IsMessage<TCFS60MCPRMessage::TMPMReselectBestIAPCompletedMsg>() )

        {

        S60MCPRLOGSTRING1("S60MCPR<%x>::TAwaitingReselectBestIAPCompleteOrError::Accept() TMPMReselectBestIAPCompletedMsg Accepted",(TInt*)&iContext.Node())

        // Reselect completed.

        return ETrue;

        }

    else if ( iContext.iMessage.IsMessage<Messages::TEBase::TError>() )

        {

        S60MCPRLOGSTRING1("S60MCPR<%x>::TAwaitingReselectBestIAPCompleteOrError::Accept() TError",(TInt*)&iContext.Node())

        // Some error possibly sent by the MPM. Must be handled by the activity.

        Messages::TEBase::TError* msg = message_cast<TEBase::TError>(&iContext.iMessage);

        iContext.iNodeActivity->SetError(msg->iValue);

        return ETrue;

        }

    else if ( iContext.iMessage.IsMessage<Messages::TEBase::TCancel>() )

        {

        // Cancellation from the RConnection::Start(). 

        // Cancel MPM asynch.

        S60MCPRLOGSTRING1("S60MCPR<%x>::TAwaitingReselectBestIAPCompleteOrError::Accept() NOT Accept TCancel, Cancelling ReselectBestIAPL()",(TInt*)&iContext.Node())

        // Get the MCPR

        CS60MetaConnectionProvider& node = (CS60MetaConnectionProvider&)iContext.Node();

        node.Policy()->CancelReselectBestIAP();

        return EFalse;

        }

    else

        {

        // else

        return EFalse;

        }

    }

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

// TAwaitingProcessErrorCompleteOrError::Accept

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

//

DEFINE_SMELEMENT( TAwaitingProcessErrorCompleteOrError, NetStateMachine::MState, TContext )

TBool TAwaitingProcessErrorCompleteOrError::Accept()

    {

    if ( iContext.iMessage.IsMessage<TCFS60MCPRMessage::TMPMProcessErrorCompletedMsg>() )

        {

        S60MCPRLOGSTRING1("S60MCPR<%x>::TAwaitingProcessErrorCompleteOrError::Accept() TMPMProcessErrorCompletedMsg or Error", (TInt*)&iContext.Node())

        // ProcessErrorComplete completed.

        return ETrue;

        }

    else if ( iContext.iMessage.IsMessage<TEBase::TError>() )

        {

        // Processing continue in error transition.

        TEBase::TError* msg = message_cast<TEBase::TError>( &iContext.iMessage );

        iContext.iNodeActivity->SetError( msg->iValue );

        S60MCPRLOGSTRING2("S60MCPR<%x>::TAwaitingProcessErrorCompleteOrError::Accept() Error %d", (TInt*)&iContext.Node(),msg->iValue)

        return ETrue;

        }

    else if ( iContext.iMessage.IsMessage<TEBase::TCancel>() )

        {

        // Get the MCPR

        CS60MetaConnectionProvider& node = (CS60MetaConnectionProvider&)iContext.Node();

        node.Policy()->CancelProcessError();

        // should this be the same as ignore?

        S60MCPRLOGSTRING1("S60MCPR<%x>::TAwaitingProcessErrorCompleteOrError::Accept() NOT Accepted TCancel Cancelling ProcessError", (TInt*)&iContext.Node())

        return EFalse;

        }

    else

        {

        return EFalse;

        }

    }

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

// TAwaitingServiceIdRequest::Accept

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

//

DEFINE_SMELEMENT( TAwaitingServiceIdRequest, NetStateMachine::MState, TContext )

TBool TAwaitingServiceIdRequest::Accept()

    {

    ESock::TMCprGetConnectionSetting* msg = NULL;

    S60MCPRLOGSTRING2("TAwaitingServiceIdRequest: iContext.iMessage( %x %x )", 

            iContext.iMessage.MessageId().MessageId(), 

            iContext.iMessage.MessageId().Realm());

    S60MCPRLOGSTRING2(" == ( %x %x )?\n", 

            ESock::TMCprGetConnectionSetting::EId, 

            ESock::TMCprGetConnectionSetting::ERealm);

    if ( iContext.iMessage.IsMessage<ESock::TMCprGetConnectionSetting>() )  

        {

        S60MCPRLOGSTRING1("S60MCPR<%x>::TAwaitingServiceIdRequest::Accept() TMCprGetConnectionSetting", 

            (TInt*)&iContext.Node())

        msg = message_cast<ESock::TMCprGetConnectionSetting>(&iContext.iMessage);

        // Get MCPR

        CS60MetaConnectionProvider& node = (CS60MetaConnectionProvider&)iContext.Node();

        _LIT( KIapProxyServiceSetting, "IAP\\IAPService" );

        TBuf<KCommsDbSvrMaxColumnNameLength*2 +1> field;

        if (msg)

            {

            TRAP_IGNORE(msg->iMessage.ReadL(0, field));

            }

        S60MCPRLOGSTRING2("S60MCPR<%x>::TAwaitingServiceIdRequest::Accept() ServiceId = %x", 

            (TInt*)&iContext.Node(), node.PolicyPrefs().ServiceId())

        // Only EIntSetting is supported 

        // 

        if ( ( TMCprGetConnectionSetting::TConnectionSettingType)msg->iSettingType == 

               TMCprGetConnectionSetting::EIntSetting

               && node.PolicyPrefs().ServiceId() != 0 

               && field.Compare( KIapProxyServiceSetting ) == 0  )

            {

            S60MCPRLOGSTRING1("S60MCPR<%x>::TAwaitingServiceIdRequest::Accept() TMCprGetConnectionSetting EIntSetting", 

                (TInt*)&iContext.Node())

            return ETrue;

            }

        else

            {

            S60MCPRLOGSTRING1("S60MCPR<%x>::TAwaitingServiceIdRequest::Accept() TMCprGetConnectionSetting not processing EIntSetting", 

                (TInt*)&iContext.Node())

            return EFalse;

            }

        }

    else

        {

        return EFalse;

        }

    }

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

// TRetrieveServiceId::DoL

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

//

DEFINE_SMELEMENT( TRetrieveServiceId, NetStateMachine::MStateTransition, TContext )

void TRetrieveServiceId::DoL()

    {

    S60MCPRLOGSTRING1("S60MCPR<%x>::TRetrieveServiceId::DoL()", (TInt*)&iContext.Node())

    // Get MCPR

    CS60MetaConnectionProvider& node = (CS60MetaConnectionProvider&)iContext.Node();

    // Get the policy server's selection result 

    TUint32 serviceId = node.PolicyPrefs().ServiceId();

    S60MCPRLOGSTRING2("S60MCPR<%x>::TRetrieveServiceId::DoL() ServiceId = %d", 

            (TInt*)&iContext.Node(), serviceId )

    TPckg<TUint32> pckg( serviceId );

    S60MCPRLOGSTRING1("S60MCPR<%x>::TRetrieveServiceId::DoL() Write ServiceId to ResponseMsg", 

            (TInt*)&iContext.Node())

    TCFSigLegacyRMessage2Ext& msg = static_cast<TCFSigLegacyRMessage2Ext&>( iContext.iMessage );

    msg.iMessage.WriteL( 1, pckg ); // codescanner::leave

    S60MCPRLOGSTRING1("S60MCPR<%x>::TRetrieveServiceId::DoL() Complete ResponseMsg", 

            (TInt*)&iContext.Node())

    RLegacyResponseMsg responseMsg( iContext, msg.iMessage, msg.iMessage.Int0() );

    responseMsg.Complete( KErrNone );

    }

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

// CReselectBestIAPCb::PolicyResponse 

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

//

void CReselectBestIAPCb::PolicyResponse( PolicyRequest& aCompletedRequest )

    {

    using namespace ESock;

    TPolicyConnPref* policypref = (TPolicyConnPref*)aCompletedRequest.iPolicyPref;

    // Request to MPM failed for some reason

    if( aCompletedRequest.iStatus != KErrNone )

        {

        S60MCPRLOGSTRING2("S60MCPR<%x>::CReselectBestIAPCb::PolicyResponse() MPM Error %d",(TInt*)&iNode,aCompletedRequest.iStatus)

        Messages::TEBase::TError msg( TCFS60MCPRMessage::TMPMReselectBestIAPCompletedMsg::Id(), 

                                      aCompletedRequest.iStatus );

        if ( iLastRequestOriginator.IsOpen() )

            {

            iLastRequestOriginator.ReplyTo( iNode.Id(), msg );

            iLastRequestOriginator.Close();

            }

        return;

        }

    S60MCPRLOGSTRING3("S60MCPR<%x>::CReselectBestIAPCb::PolicyResponse() IAP %d NET %d",

            (TInt*)&iNode,policypref->IapId(),policypref->NetId())

    iNode.SetPolicyPrefs( *policypref );

    TCFS60MCPRMessage::TMPMReselectBestIAPCompletedMsg msg;

    if ( iLastRequestOriginator.IsOpen() )

        {

        iLastRequestOriginator.ReplyTo( iNode.Id(), msg );

        iLastRequestOriginator.Close();

        }

    }

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

// CProcessErrorCb::PolicyResponse

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

//

void CProcessErrorCb::PolicyResponse( PolicyRequest& aCompletedRequest )

    {

    S60MCPRLOGSTRING3("S60MCPR<%x>::CProcessErrorCb::PolicyResponse() status=%d action=%d",

              (TInt*)&iNode,aCompletedRequest.iStatus,(TInt)aCompletedRequest.iNeededAction)

    // Validate that we can send a response.

    //

    if ( !iLastRequestOriginator.IsOpen() )

        {

        // response can't be sent.

        return;

        }

    // Request ok and valid one

    //

    if ( aCompletedRequest.iStatus == KErrNone &&

         ( aCompletedRequest.iNeededAction == EIgnoreError ||

           aCompletedRequest.iNeededAction == EDoReselection ))

        {

        TCFS60MCPRMessage::TMPMProcessErrorCompletedMsg msg( (TInt)aCompletedRequest.iNeededAction );

        iLastRequestOriginator.ReplyTo( iNode.Id(), msg );

        iLastRequestOriginator.Close();

        }

    // Propagate error

    //

    else

        {

        // Initialize

        TInt err = aCompletedRequest.iStatus;

        if ( err == KErrNone )

            {

            ASSERT( aCompletedRequest.iError != KErrNone );

            err = aCompletedRequest.iError != KErrNone ? aCompletedRequest.iError : KErrGeneral;

            }

        TEBase::TError msg( TCFS60MCPRMessage::TMPMProcessErrorCompletedMsg::Id(), err );

        iLastRequestOriginator.ReplyTo( iNode.Id(), msg );

        iLastRequestOriginator.Close();

        }

    }

//  End of File