/*

* Copyright (c) 2002-2006 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 of iapsettings

*

*/

// INCLUDE FILES

#include <cdbpreftable.h>

#include "hssiaphandler.h"

#include "hotspotclientserver.h"

#include "am_debug.h"

#include <es_enum.h>

#include <cmconnectionmethoddef.h>

#include <cmmanagerdef.h>

// CONSTANTS

const TInt  KRetryCount   = 20;

const TInt  KRetryTimeout = 100000;

using namespace CMManager;

// ============================ MEMBER FUNCTIONS ===============================

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

// CHotSpotPluginSession

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

//

CHssIapHandler::CHssIapHandler( )

    DEBUG("CHssIapHandler::CHssIapHandler");

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

// ConstructL

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

//

void CHssIapHandler::ConstructL()

    {

    DEBUG("CHssIapHandler::ConstructL()");

    }

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

// NewL

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

//

CHssIapHandler* CHssIapHandler::NewL()

    {

    CHssIapHandler* self = new( ELeave ) CHssIapHandler();

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// ~CHssIapHandler

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

//

CHssIapHandler::~CHssIapHandler()

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

// ChangeSettingsL

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

//

TInt CHssIapHandler::ChangeSettingsL( const TUint aIapID, 

                                      const THssIapSettings& aSettings )

    {

    // Wlan table name -field not modified, because it is used to store UIDs

    // of clients. 

    DEBUG("CHssIapHandler::ChangeSettingsL");

    TInt ret( KErrNone );

    cmManager.OpenL();

    CleanupClosePushL( cmManager );

    // Read WLAN table service id

    TUint32 serviceId(0);

    serviceId = plugin.GetIntAttributeL( EWlanServiceId );

    DEBUG1("CHssIapHandler::ChangeSettingsL WLAN serviceId: %d", serviceId);

    if  ( aSettings.Name.Length() > 0 )

        {

        plugin.SetStringAttributeL( ECmName, aSettings.Name );

        plugin.UpdateL();

        }

    CleanupStack::PopAndDestroy( &plugin ); 

    CleanupStack::PopAndDestroy( &cmManager ); 

    // CommsDat section starts

    CMDBSession* dbSession = CMDBSession::NewL(CMDBSession::LatestVersion());

    CleanupStack::PushL( dbSession );

    iWLANRecord = static_cast<CMDBGenericRecord*>

    iWLANRecord->InitializeL( KGenericTable(),NULL );

    iWLANRecord->SetRecordId( serviceId );

    iWLANRecord->LoadL( *dbSession );

    // Set Network Name

    if ( aSettings.iSSID.Length() > 0 )

        {

        CMDBField<TDesC>* textField = 

            (CMDBField<TDesC>*)iWLANRecord->GetFieldByIdL( KCDTIdWlanSSID );            

        textField->SetMaxLengthL( aSettings.iSSID.Length() );

        textField->SetL( aSettings.iSSID );

        }

    // Set Connection Mode 

    *((CMDBField<TUint32>*)iWLANRecord->GetFieldByIdL( KCDTIdWlanConnMode)) = 

                                                   aSettings.iConnectionMode;

    // Set Channel Id.

    *((CMDBField<TUint32>*)iWLANRecord->GetFieldByIdL( KCDTIdWlanChannelID )) = 0;

    //  Set Security Mode

    *((CMDBField<TUint32>*)iWLANRecord->GetFieldByIdL( KCDTIdWlanSecMode )) = 

                                                    aSettings.iSecurityMode;

    // Check if THssIapSettings is created wrong (dynamically). 

    // -> Then default value is not set to security mode and it will be huge.

    // -> Destination can become unusable.

    TInt secMode = aSettings.iSecurityMode;

    if ( secMode > EHssWpa2Only )

    if( secMode == EHssWep )

        {

        DEBUG("CHssIapHandler::ChangeSettingsL -> SecurityMode == EHssWep");

        *((CMDBField<TUint32>*)iWLANRecord->GetFieldByIdL(KCDTIdWlanAuthMode)) = aSettings.iAuthenticationMode;

        *((CMDBField<TUint32>*)iWLANRecord->GetFieldByIdL( KCDTIdWlanWepIndex )) = aSettings.iWepIndex;

        ret = WriteWepKeysL( aSettings );

        *((CMDBField<TUint32>*)iWLANRecord->GetFieldByIdL( KCDTIdWlanFormatKey1 )) = aSettings.iWepKeyFormat[0];

        *((CMDBField<TUint32>*)iWLANRecord->GetFieldByIdL( KCDTIdWlanFormatKey2 )) = aSettings.iWepKeyFormat[1];

        *((CMDBField<TUint32>*)iWLANRecord->GetFieldByIdL( KCDTIdWlanFormatKey3 )) = aSettings.iWepKeyFormat[2];

        *((CMDBField<TUint32>*)iWLANRecord->GetFieldByIdL( KCDTIdWlanFormatKey4 )) = aSettings.iWepKeyFormat[3];

        }

    else if( secMode > EHssWep )

        {

        DEBUG("CHssIapHandler::ChangeSettingsL -> SecurityMode > EHssWep");

        if ( aSettings.iEnableWpaPsk ) // Use PreSharedKey

            {

            TBuf8<KHssWlanWpaPskLength> buf;

            TInt len = aSettings.iWPAPreSharedKey.Length();

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

                {

                buf.Append( aSettings.iWPAPreSharedKey[i]);

                }

            CMDBField<TDesC8>* binField = (CMDBField<TDesC8>*)iWLANRecord->GetFieldByIdL(KCDTIdWlanWpaPreSharedKey);

            binField->SetMaxLengthL( len);

            binField->SetL( buf);

            *((CMDBField<TUint32>*)iWLANRecord->GetFieldByIdL(KCDTIdWlanWpaKeyLength)) = aSettings.iWPAKeyLength;

            *((CMDBField<TUint32>*)iWLANRecord->GetFieldByIdL(KCDTIdWlanEnableWpaPsk)) = aSettings.iEnableWpaPsk;

            }

            {

            DEBUG("CHssIapHandler::ChangeSettingsL -> SecurityMode > EHssWep -> EAP");

            *((CMDBField<TUint32>*)iWLANRecord->GetFieldByIdL(KCDTIdWlanEnableWpaPsk)) = aSettings.iEnableWpaPsk;

            }

        }

    // Update access point, be prepared that Commsdat might be locked

    TInt errCode( KErrLocked );

    TInt retryCount( 0 );

    while( errCode == KErrLocked && retryCount < KRetryCount )

        {

        TRAP( errCode, iWLANRecord->ModifyL( *dbSession ) );

        if ( errCode == KErrLocked )

            {	

            User::After( KRetryTimeout );

            }	

        retryCount++;	        

        }

    if ( errCode )

        {

        // override previous ret value only when error happened        	    	

        ret = errCode;

        }

    CleanupStack::PopAndDestroy( dbSession );

    DEBUG("CHssIapHandler::ChangeSettingsL DONE");

    }

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

// WriteWepKeysL

// Writes WEP keys from aSettings to current WLANServiceTable record

// The record which the data is written to must be fetched from CommsDat

// before calling WriteWepKeysL()

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

//

TInt CHssIapHandler::WriteWepKeysL( const THssIapSettings& aSettings )

    {

    DEBUG("CHssIapHandler::WriteWepKeysL");

    // 1

    CMDBField<TDesC8>* wepKey = static_cast<CMDBField<TDesC8>*>(iWLANRecord->GetFieldByIdL(KCDTIdWlanWepKey1));

    if ( aSettings.iWepKey1.KeyLength <= KHssMaxWEPKeyLength )

        {

        PackWepKeyCommsDatL( aSettings.iWepKey1, aSettings.iWepKeyFormat[0], wepKey );

        }

    else 

        {

        return KErrTooBig;

        }

    // 2

    wepKey = static_cast<CMDBField<TDesC8>*>(iWLANRecord->GetFieldByIdL(KCDTIdWlanWepKey2));

    if ( aSettings.iWepKey2.KeyLength <= KHssMaxWEPKeyLength )

        {

        PackWepKeyCommsDatL( aSettings.iWepKey2, aSettings.iWepKeyFormat[1], wepKey );   

        }

    else 

        {

        return KErrTooBig;

        }

    // 3

    wepKey = static_cast<CMDBField<TDesC8>*>(iWLANRecord->GetFieldByIdL(KCDTIdWlanWepKey3));

    if ( aSettings.iWepKey3.KeyLength <= KHssMaxWEPKeyLength )

        {

        PackWepKeyCommsDatL( aSettings.iWepKey3, aSettings.iWepKeyFormat[2], wepKey );    

        }

    else 

        {

        return KErrTooBig;

        }

    // 4

    wepKey = static_cast<CMDBField<TDesC8>*>(iWLANRecord->GetFieldByIdL(KCDTIdWlanWepKey4));

    if ( aSettings.iWepKey4.KeyLength <= KHssMaxWEPKeyLength )

        {

         PackWepKeyCommsDatL( aSettings.iWepKey4,aSettings.iWepKeyFormat[3],  wepKey );   

        }

    else 

        {

        return KErrTooBig;

        }

    return KErrNone;

    }

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

// PackWepKeyCommsDatL

// Copies wepkey string from wepkey structs TUint8 buffer to a WLANServiceTable

// record's WEP key field descriptor

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

//

void CHssIapHandler::PackWepKeyCommsDatL( const SHssWep& aInputKey,

                                          const EHssWEPKeyFormat&  aFormat,  

                                                  CMDBField<TDesC8>* aPackedKey )

    {

    DEBUG("CHssIapHandler:::PackWepKeyL");

    if( aInputKey.KeyLength > KHssMaxWEPKeyLength)

        {

        User::Leave( KErrArgument);

        }

    TBuf8<KHssMaxWEPKeyLength> wepBuf;

    for (TUint i = 0 ; i<aInputKey.KeyLength; i++)

        {

        wepBuf.Append(aInputKey.KeyMaterial[i]);

        }

    // Ascii to hexa convertion, if not already hexa

    if( EAscii == aFormat )

        {

        HBufC8* buf8Conv = HBufC8::NewLC( wepBuf.Length()*2 );

        ConvertAsciiToHex( wepBuf, buf8Conv );

        wepBuf.Copy( buf8Conv->Des() );

        CleanupStack::PopAndDestroy( buf8Conv );

        }

    aPackedKey->SetL( wepBuf);

    }

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

// ConvertAsciiToHex

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

//

void CHssIapHandler::ConvertAsciiToHex( const TDes8& aSource, 

                                                HBufC8*& aDest )

    {

    DEBUG("CHssIapHandler::ConvertAsciiToHex");

    _LIT( hex, "0123456789ABCDEF" );

    TInt size = aSource.Size();

    TPtr8 ptr = aDest->Des();

    for ( TInt ii = 0; ii < size; ii++ )

        {

        TText8 ch = aSource[ii];

        ptr.Append( hex()[(ch/16)&0x0f] );

        ptr.Append( hex()[ch&0x0f] );

        }

    }

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