/*

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

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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: 

*

*/

#include "cmodematsrv.h"

#include "modematclientsrv.h"

#include "modematsecpolicy.h"

#include "cmodematsession.h"

#include "cmodemathandler.h"

#include "modemattrace.h"

#include "catmessage.h"

CModemAtSrv::CModemAtSrv( TInt aPriority ) :

    CPolicyServer( aPriority, KSrvPolicy ), iHandler(NULL)

    {

    }

CModemAtSrv::~CModemAtSrv()

    {

    C_TRACE (( _L(">>CModemAtSrv::~CModemAtSrv()") ));

    iAtMessageArray.ResetAndDestroy();

    iAtMessageArray.Close();

    C_TRACE (( _L("<<CModemAtSrv::~CModemAtSrv()") ));

    }

CModemAtSrv* CModemAtSrv::NewLC()

    {

    CModemAtSrv* self = new (ELeave) CModemAtSrv( EPriorityNormal );

    CleanupStack::PushL( self );

    self->ConstructL();

    self->StartL( KATExtSrvName );

    RThread().SetPriority( EPriorityNormal );

    return self;

    }

void CModemAtSrv::RemovePipe( const TUint8 aDteId )

    {

    C_TRACE((_L("CModemAtSrv::RemovePipe()") ));

    iHandler->RemovePipe( aDteId );

    }

void CModemAtSrv::ClientClosed( CModemAtSession* aSession )

    {

    C_TRACE (( _L("CModemAtSrv::ClientClosed()") ));

    TInt index = iSessions.Find( aSession );

    if( index >= 0 )

        {

        //remove session from routing table, if dteId exists

        if(iSessions[index]->GetDteId() != KInitialDteId )

            {

            iRouteTable[ iSessions[index]->GetPluginType() ][ iSessions[index]->GetDteId() ] = NULL;

            }

        if( iSessions.Count() == 1 )

            {

            C_TRACE((_L("Disconnecting ISI message handler ") ));

            iHandler->Disconnect( iSessions[ index ]->GetDteId() );

            }

        C_TRACE((_L("Removing session (plugin type %d dteid: %d)"), iSessions[index]->GetPluginType(), iSessions[index]->GetDteId() ));

        iSessions.Remove( index );

        C_TRACE((_T("<<CModemAtSrv::ClientClosed()") ));

        }

    }

CSession2* CModemAtSrv::NewSessionL( const TVersion& aVersion,

                                   const RMessage2& /*aMessage*/ ) const

    {

    C_TRACE (( _T("CModemAtSrv::NewSessionL()") ));

    CModemAtSrv& thisServer = const_cast<CModemAtSrv&>( *this );

    CModemAtSession* session = CModemAtSession::NewL( thisServer, aVersion );

    CleanupStack::PushL( session );

    thisServer.iSessions.AppendL( session );

    CleanupStack::Pop( session );

    return session;

    }

void CModemAtSrv::ConstructL()

    {

    C_TRACE (( _T("CModemAtSrv::ConstructL()") ));

    iHandler = CModemAtHandler::NewL( *this );

     //setup routing table

    for( TInt i = 0 ; i < KPluginCount ; i++)

        {

        for(TInt o = 0; o < KMaxDteIdCount; o++)

            {

            iRouteTable[ i ][ o ] = NULL;

            }

        }

    } 

void CModemAtSrv::HandleSignalInd( const TInt aDteId )

    {

    C_TRACE ((_T("CModemAtSrv::HandleSignalInd aDteId = %d sessions = %d"), aDteId, iSessions.Count() ));

    for( TInt i = 0; i < iSessions.Count(); i++ )

        {

        if( iSessions[i]->GetDteId() == aDteId  && iSessions[i]->IsSignalIndReqActive() )

            {

            C_TRACE (( _T("CModemAtSrv::HandleSignalInd() session found") ));

            iSessions[i]->SignalIndReceived();

            }

        }

    }

void CModemAtSrv::HandleUnsolicitedData( const TInt aDteId, const TDesC8& aData )

    {

    C_TRACE ((_T("CModemAtSrv::HandleUnsolicitedData aDteId = %d sessions = %d"), aDteId, iSessions.Count() ));

    for( TInt i = 0; i < iSessions.Count(); i++ )

        {

        if( (iSessions[i]->GetDteId() == aDteId || aDteId == KUnsolicitedDataDteId )&&

            iSessions[i]->IsUnsolicitedDataReqActive() &&

            iSessions[i]->GetPluginType() == EATExtPlugin )

            {

            C_TRACE (( _T("CModemAtSrv::HandleUnsolicitedData() session found") ));

            iSessions[i]->UnsolicitedData( aData );

            }

        }

    }

void CModemAtSrv::HandleCommandModeChange( TInt aDteId, TCommandMode aMode )

    {

    C_TRACE ((_T("CModemAtSrv::HandleCommandModeChange aDteId = %d sessions = %d mode = %d"), aDteId, iSessions.Count(), (TInt) aMode ));

    for( TInt i = 0; i < iSessions.Count(); i++ )

        {

        if( iSessions[i]->GetDteId() == aDteId &&

            iSessions[i]->IsCommandModeReqActive() &&

            iSessions[i]->GetPluginType() == ECommonPlugin )

            {

            C_TRACE (( _T("CModemAtSrv::HandleCommandModeChange() session found") ));

            iSessions[i]->CommandModeChanged( aMode );

            }

        }

    }

void CModemAtSrv::BroadcastModemConnected(const TUint aDteId, TInt aErr )

    {

    C_TRACE ((_T("CModemAtSrv::BroadcastModemConnected aDteId = %d err = %d sessions = %d"), aDteId, aErr, iSessions.Count() ));

    for( TInt i = 0; i < iSessions.Count(); i++ )

        {

        if( iSessions[i]->GetDteId() == aDteId  && iSessions[i]->IsConnectReqActive() )

            {

            C_TRACE (( _T("CModemAtSrv::BroadcastModemConnected() session found") ));

            iSessions[i]->ModemConnected( aErr );

            }

        }

    }

void CModemAtSrv::HandleIntermediateDataInd( const TInt aDteId,

    const TATPluginInterface aPluginType,

    const TDesC8& aResponse,

    const TUint8 aCommand )

    {

    C_TRACE ((_T("CModemAtSrv::HandleIntermediateDataInd aDteId = %d sessions = %d "), aDteId, iSessions.Count() ));

    C_TRACE ((_T("plugintype = %d command = %d"), (TInt)aPluginType, aCommand ));

    if ( iAtMessageArray.Count() > 0 )

        {

        C_TRACE((_L("iAtMessageArray[0]->ReceiveATResponse Intermediate data")));

        iAtMessageArray[0]->ReceiveATResponse( aResponse, EFalse );

        }

    else

        {

        C_TRACE ((_T("CModemAtSrv::HandleIntermediateDataInd INTERMEDIATE DATA received but no request active") ));

        }

    }

void CModemAtSrv::HandleATResponse( const TInt aDteId, const TDesC8& aResponse, const TUint8 aCommand )

    {

    C_TRACE ((_T(">>CModemAtSrv::HandleATResponse aDteId = %d sessions = %d "), aDteId, iSessions.Count() ));

    C_TRACE ((_T("CModemAtSrv::HandleATResponse command = %d"), aCommand ));

    if ( iAtMessageArray.Count() > 0 )

        {

        CAtMessage* tmp = iAtMessageArray[0];

        C_TRACE((_L("iAtMessageArray[0]->ReceiveATResponse 0x%x"), tmp ));

        tmp->ReceiveATResponse( aResponse, ETrue );

        C_TRACE((_L("CModemAtSrv::HandleATResponse Remove the first message in Fifo")));

        RemoveFirstFromSendFifo();

        C_TRACE((_L("CModemAtSrv::HandleATResponse SendNextFromFifo")));

        SendNextFromFifo();

        }

    else

        {

        HandleUnsolicitedData( aDteId, aResponse);

        }

    C_TRACE ((_T("<<CModemAtSrv::HandleATResponse()") ));

    }

    {

    C_TRACE ((_T(">>CModemAtSrv::ConnectToModem 0x%x"), aSession));

    TInt type = aSession->GetPluginType();

    C_TRACE(( _L("session count: %d, type: %d"), iSessions.Count(), type ));

    //find already defined dteid

    for(TInt i = 0; i < iSessions.Count(); i++) 

        {

        TInt dteid = iSessions[i]->GetDteId();

        TDesC8& name = iSessions[i]->GetName();

        C_TRACE((_L("i: %d, dteid: %d"), i, dteid));

        //Is there plugin with samename

        if( name.Compare(aSession->GetName())== 0 && dteid != KInitialDteId )

            {

            if( type == iSessions[i]->GetPluginType())

                {

                TRACE_ASSERT_ALWAYS;

                aSession->SetDteId( dteid );

                }

            //add current session to route table

            C_TRACE((_L("AddSessionToRouteTable type: %d, dteid: %d"), type, aSession->GetDteId()));

            iRouteTable[aSession->GetPluginType()][dteid] = aSession;

            C_TRACE((_L("Interface exists=> %d"),dteid));

            aSession->SetDteId( dteid );

            }

        }

    //no AT-plugin& Common plugin, find first free dteid

    TInt dteId = 0;

    while(iRouteTable[0][dteId] || iRouteTable[1][dteId])

        {

        dteId++;

      }     

    ASSERT_PANIC_ALWAYS( dteId < KMaxDteIdCount );

    iRouteTable[type][dteId] = aSession;

    C_TRACE((_L("Added new dteid: %d"),dteId));

    aSession->SetDteId(dteId);

    }

void CModemAtSrv::AddToSendFifo( const TUint8 aDteId,

    const TATPluginInterface aPluginType,

    CAtMessage* aMessage )

    {

    C_TRACE (( _T("CModemAtSrv::AddToSendFifo( dteId = %d,0x%x)"), aDteId, aMessage  ));

    iAtMessageArray.Append( aMessage ); // only one AT command at the time in modem

    if( iAtMessageArray.Count() == 1 ) //if empty Fifo send immediately

        {

        C_TRACE((_L("Sending message immediately")));

        iHandler->SendATCommand( aDteId, 

           aPluginType,

           aMessage->GetMessageType(),

           aMessage->GetBuffer() );

        }

    }

void CModemAtSrv::RemoveFirstFromSendFifo()

    {

    C_TRACE(( _T("CModemAtSrv::RemoveFirstFromSendFifo iAtMessageArray.Count = %d"), iAtMessageArray.Count() ));

    if( iAtMessageArray.Count( ) > 0 )

        {

        C_TRACE (( _T("CModemAtSrv::RemoveFirstFromSendFifo 1") ));

        CAtMessage* msg = iAtMessageArray[0];

        C_TRACE (( _T("CModemAtSrv::RemoveFirstFromSendFifo 2 0x%x"), msg ));

        iAtMessageArray.Remove(0);

        if( msg )

            {

            C_TRACE (( _T("CModemAtSrv::RemoveFirstFromSendFifo 3") ));

            delete msg;

            }

        else

            {

            TRACE_ASSERT_ALWAYS;

            }

        C_TRACE (( _T("CModemAtSrv::RemoveFirstFromSendFifo 4") ));

        }

    C_TRACE (( _T("CModemAtSrv::RemoveFirstFromSendFifo 5") ));

    }

void CModemAtSrv::SendNextFromFifo()

    {

    C_TRACE ((_T("CModemAtSrv::SendNextFromFifo fifo has %d message(s)"), iAtMessageArray.Count() ));

    TPtr8 ptr(0,0);

    if( iAtMessageArray.Count() > 0 )

        {

        C_TRACE((_L("Messages in buffer... Sending message")));

        ptr.Set( iAtMessageArray[0]->GetBuffer() );

        C_TRACE (( _T("iHandler->SendATCommand()") ));

        iHandler->SendATCommand( iAtMessageArray[0]->GetSession()->GetDteId(), 

           iAtMessageArray[0]->GetSession()->GetPluginType(),

           iAtMessageArray[0]->GetMessageType(),

           ptr );

        }

    }

void CModemAtSrv::CancelFifoRequests( const CModemAtSession* aSession )

    {

    C_TRACE((_T(">>CModemAtSrv::CancelFifoRequests count: %d"), iAtMessageArray.Count() ));

    TInt messageCount = iAtMessageArray.Count();

    for( TInt i = 0; i < messageCount; i++ )

        {

        C_TRACE((_T("CancelFifoRequests %d"), i ));

        CAtMessage* msg = iAtMessageArray[ i ];

        if( msg )

            {

            C_TRACE((_T("Found Request: 0x%x"),msg ));

            if( msg->GetSession() == aSession)

                {

                C_TRACE((_T("CancelFifoRequests - canceling request") ));

                msg->CancelRequest();

                C_TRACE (( _T("CModemAtSrv::CancelFifoRequest delete msg") ));

                delete msg;

                }

            }

        }

    C_TRACE (( _T("CModemAtSrv::CancelFifoRequest iAtMessageArray.Remove %d messages"), messageCount ));

    for( TInt j = 0; j < messageCount && iAtMessageArray.Count() > 0; j++ )

        {

        iAtMessageArray.Remove( 0 );

        }

    C_TRACE(( _T("<<CModemAtSrv::CancelFifoRequests()") ));

    }

TInt CModemAtSrv::SessionCount()

    {

    C_TRACE(( _T("CModemAtSrv::SessionCount() %d"), iSessions.Count() ));

    return iSessions.Count();

    }