/*

* Copyright (c) 2008-2010 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:  Provider WLAN search and SNAP handling functionality

*

*/

// Search WLAN

#include <cmmanagerdef.h>

#include <cmpluginwlandef.h> // bearer type

#include <cmdestinationext.h>

#include <cmconnectionmethoddef.h>

#include <ConnectionUiUtilities.h>

#include <cmconnectionmethodext.h>

#include <WEPSecuritySettingsUI.h>

#include <WPASecuritySettingsUI.h>

#include <cmmanager.h>

#include <cmpluginpacketdatadef.h>

#include "cchuilogger.h"

#include "cchuicchhandler.h"

#include "cchuispshandler.h"

#include "cchuiconnectionhandler.h"

const TInt KSsidLength = 256;

const TInt KCmHighestPriority = 0;

const TInt KDestinationArrayGranularity = 10;

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

CCchUiConnectionHandler::CCchUiConnectionHandler(

    CCchUiCchHandler& aCchHandler,

    CCchUiSpsHandler& aSpsHandler ):

    iCCHHandler( aCchHandler ),

    iSpsHandler( aSpsHandler ),

    iSearchWlanOngoing( EFalse )

    {

    }

void CCchUiConnectionHandler::ConstructL()

    {

    iConnUiUtils = CConnectionUiUtilities::NewL();

    iCmManagerExt.OpenL();

    User::LeaveIfError( iConnMon.ConnectL() );

    }

CCchUiConnectionHandler* CCchUiConnectionHandler::NewL(

    CCchUiCchHandler& aCchHandler,

    CCchUiSpsHandler& aSpsHandler )

    {

    CCchUiConnectionHandler* self = NewLC( 

        aCchHandler, aSpsHandler );

    CleanupStack::Pop(self);

    return self;

    }

CCchUiConnectionHandler* CCchUiConnectionHandler::NewLC(

    CCchUiCchHandler& aCchHandler,

    CCchUiSpsHandler& aSpsHandler )

    {

    CCchUiConnectionHandler* self =

        new (ELeave) CCchUiConnectionHandler( 

            aCchHandler, aSpsHandler );

    CleanupStack::PushL(self);

    self->ConstructL();

    return self;

    }

CCchUiConnectionHandler::~CCchUiConnectionHandler()

    {

    delete iConnUiUtils;

    iCmManagerExt.Close();

    iConnMon.Close();

    }

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

// Searches access poinsts and adds selected access point to snap

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

//

void CCchUiConnectionHandler::SearchAccessPointsL( 

    TUint aServiceId, 

    TUint32 aSnapId, 

    const TDesC& aServiceName )

    {    

    CCHUIDEBUG( "CCchUiConnectionHandler::SearchAccessPointsL - IN" );

    // SSID of the WLAN network selected by user

    TWlanSsid ssid; 

    // Connection mode of the WLAN network

    TWlanConnectionMode connectionMode; 

    // Security mode of the WLAN network

    TWlanConnectionSecurityMode securityMode; 

    // Flag for determining if hidden wlan

    TBool hiddenWlan( EFalse );

    CCHUIDEBUG( 

        "CCchUiConnectionHandler::SearchAccessPointsL - begin search wlan" );

    // Set flag which indicates that search wlan query is open

    iSearchWlanOngoing = ETrue;

    TBool ret = iConnUiUtils->SearchWLANNetwork( 

        ssid, connectionMode, securityMode );

    iSearchWlanOngoing = EFalse;

    if ( !ret )

        {        

        //ret is ETrue if user pressed OK softkey. Otherwise leave

        //with cancel

        User::Leave( KErrCancel );

        }

    CCHUIDEBUG( 

      "CCchUiConnectionHandler::SearchAccessPointsL - search wlan finished" ); 

    // Check if hidden wlan

    TUint32 easyWlanId( 0 );

    easyWlanId = iCmManagerExt.EasyWlanIdL();

    if ( easyWlanId )

        {

        RCmConnectionMethodExt cmConnMethodExt = 

            iCmManagerExt.ConnectionMethodL( easyWlanId );

        CleanupClosePushL( cmConnMethodExt );

        if ( cmConnMethodExt.GetBoolAttributeL( CMManager::EWlanScanSSID ) )

            {

        CCHUIDEBUG( 

             "CCchUiConnectionHandler::SearchAccessPointsL - hidden wlan" );

            hiddenWlan = ETrue;

            }

        CleanupStack::PopAndDestroy( &cmConnMethodExt );

        }

    HBufC* ssid16 = HBufC::NewL( KSsidLength );

    CleanupStack::PushL( ssid16 );

    TPtr ssid16Ptr( ssid16->Des() );

    ssid16Ptr.Copy( ssid );

    //  Check if the snap returned by Cch really exists.

    if ( aSnapId )

        {

        RArray<TUint32> destIds = RArray<TUint32>( 1 );

        CleanupClosePushL( destIds );

        iCmManagerExt.AllDestinationsL( destIds );

        TBool found( EFalse );

        for ( TInt index = 0 ; index < destIds.Count() ; index++ )

            {

            if ( destIds[index] == aSnapId )

                {

                found = ETrue;

                }

            }

        CleanupStack::PopAndDestroy( &destIds );

        // Reset snap id if the snap doesn't exist.

        if ( !found )

            {

            aSnapId = 0;

            }

        }

    if ( !aSnapId )

        {

        RCmDestinationExt newDestination = 

            CreateServiceSnapL( aServiceName );

        CleanupClosePushL( newDestination );

        TBool alreadyExists = EFalse;

        TInt iapId = AddNewConnectionMethodL( 

            newDestination, 

            *ssid16, 

            securityMode,

            alreadyExists,

            hiddenWlan );

        if ( KErrCancel == iapId )

            {

            //Leave with cancel if user pressed Cancel softkey

            CleanupStack::PopAndDestroy( &newDestination );

            CleanupStack::PopAndDestroy( ssid16 );

            User::Leave( KErrCancel );

            }

        if ( !alreadyExists )

            {

            iSpsHandler.SetTemporaryIapIdL( aServiceId, iapId );

            }

        // Now the snap is created, set it to use with cch

        SetSnapToUseL( aServiceId, newDestination.Id() );

        // Self created, write id to service table in order to remove

        // in service uninstall

        TRAP_IGNORE( iSpsHandler.SetSnapIdL( 

            aServiceId, newDestination.Id() ) );

        CleanupStack::PopAndDestroy( &newDestination );

        CleanupStack::PopAndDestroy( ssid16 );

        }

    else

        {

        RCmDestinationExt destination = 

            iCmManagerExt.DestinationL( aSnapId );

        CleanupClosePushL( destination );

        TBool alreadyExists = EFalse;

        TInt iapId = AddNewConnectionMethodL( 

            destination,

            *ssid16,

            securityMode,

            alreadyExists, 

            hiddenWlan );

        CleanupStack::PopAndDestroy( &destination );

        CleanupStack::PopAndDestroy( ssid16 );

        if ( KErrCancel == iapId )

            {

            //Leave with cancel if user pressed Cancel softkey

            User::Leave( KErrCancel );

            }

        if ( !alreadyExists )

            {

            iSpsHandler.SetTemporaryIapIdL( 

                aServiceId, iapId );

            }

        else

            {

            // Get current connection iap id

            TInt currentIapId( KErrNone );

            TInt error( KErrNone );

            iCCHHandler.GetCurrentConnectionIapIdL(

                aServiceId, ECCHUnknown, currentIapId, error );

            CCHUIDEBUG2( "CCchUiConnectionHandler::SearchAccessPointsL - error:            %d", error );

            CCHUIDEBUG2( "CCchUiConnectionHandler::SearchAccessPointsL - current iap id:   %d", currentIapId );

            CCHUIDEBUG2( "CCchUiConnectionHandler::SearchAccessPointsL - selected iap id:  %d", iapId );

            // if selected iap is same as current iap no need to continue

            // because if we continue there will be unnecessary disable enable loop

            if ( currentIapId == iapId )

                {

                User::Leave( KErrCancel );

                }

            }

        SetSnapToUseL( aServiceId, aSnapId ); 

        }

    // Reset Easy Wlan EWlanScanSSID parameter to EFalse

    if ( easyWlanId && hiddenWlan )

        {

        RCmConnectionMethodExt cmConnMethodExt = 

            iCmManagerExt.ConnectionMethodL( easyWlanId );

        CleanupClosePushL( cmConnMethodExt );

        cmConnMethodExt.SetBoolAttributeL( CMManager::EWlanScanSSID, EFalse );

        cmConnMethodExt.UpdateL();

        CleanupStack::PopAndDestroy( &cmConnMethodExt );

        }

    CCHUIDEBUG( "CCchUiConnectionHandler::SearchAccessPointsL - OUT" );

    } 

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

// Check if connnection method already exists. If exists, connection method

// id is returned, othewise KErrNotFound.

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

//

TInt CCchUiConnectionHandler::ConnectionMethodAlreadyExistsL( 

    RCmDestinationExt& aDestination,

    const TDesC& aSsid,

    CMManager::TWlanSecMode aSecurityMode,

    TBool& aAlreadyExists,

    TBool aHidden )

    {

    CCHUIDEBUG( "CCchUiConnectionHandler::ConnectionMethodAlreadyExistsL" );

    TInt connectionMethodId = KErrNotFound;

    for ( TInt i=0 ; 

          i < aDestination.ConnectionMethodCount() && !aAlreadyExists ; 

          i++ )

        {

        HBufC* refSsid( NULL );

        RCmConnectionMethodExt cm = aDestination.ConnectionMethodL(i);

        CleanupClosePushL( cm );

        // If snap contains non wlan iaps, this will leave so trap

        TRAPD( err, refSsid = cm.GetStringAttributeL( CMManager::EWlanSSID ));

        if ( refSsid && !err )

            {

            CleanupStack::PushL( refSsid );

            if ( refSsid->Compare( aSsid ) == 0 )

                {

                CCHUIDEBUG( "Matching wlan SSID Found" );

                // check security and hidden

                TBool refHidden = cm.GetBoolAttributeL( 

                   CMManager::EWlanScanSSID );

                TUint refSecurity = cm.GetIntAttributeL( 

                    CMManager::EWlanSecurityMode );

                // ref AP security mode is stored as EWlanSecModeWpa in case of EWlanSecModeWpa2

                TBool exception( EFalse ); 

                if ( aSecurityMode == CMManager::EWlanSecModeWpa2 && 

                     refSecurity == CMManager::EWlanSecModeWpa )

                    {

                    exception = ETrue;

                    }

                if ( refHidden == aHidden &&

                    ( refSecurity == aSecurityMode || exception ) )

                    {              

                    connectionMethodId = 

                        cm.GetIntAttributeL( CMManager::ECmIapId );

                    aAlreadyExists = ETrue;

                    }

                }

            CleanupStack::PopAndDestroy( refSsid );

            }

        else if ( KErrNoMemory == err )

            {

            User::Leave( err );

            }

        else

            {

            // for note from code analysis tool

            }

        CleanupStack::PopAndDestroy( &cm );

        }

    CCHUIDEBUG2( "ConnectionMethodAlreadyExistsL connection method id=%d", 

         connectionMethodId );

    return connectionMethodId;

    }

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

// Add new connection method.

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

//

TInt CCchUiConnectionHandler::AddNewConnectionMethodL( 

    RCmDestinationExt& aDestination, 

    const TDesC& aSsid,

    TWlanConnectionSecurityMode aSecurityMode,

    TBool& aAlreadyExists,

    TBool aSetHidden )

    {

    CCHUIDEBUG( "CCchUiConnectionHandler::AddNewConnectionMethodL" );

    CMManager::TWlanSecMode securityModeToSet = CMManager::EWlanSecModeOpen;

    switch ( aSecurityMode )

        {

        case EWlanConnectionSecurityOpen:

            {

            securityModeToSet = CMManager::EWlanSecModeOpen;

            }

            break;

        case EWlanConnectionSecurityWep:

            {

            securityModeToSet = CMManager::EWlanSecModeWep;

            }

            break;

        case EWlanConnectionSecurity802d1x:

            {

            securityModeToSet = CMManager::EWlanSecMode802_1x;

            }

            break;

        case EWlanConnectionSecurityWpa:

            {

            securityModeToSet = CMManager::EWlanSecModeWpa;

            }

            break;

        case EWlanConnectionSecurityWpaPsk:

            {

            securityModeToSet = CMManager::EWlanSecModeWpa2;

            }

            break;

        default:

            break;

        }    

    // Check is iap with same ssid already exists

    RArray<TUint32> destArray;

    CleanupClosePushL( destArray );

    iCmManagerExt.AllDestinationsL( destArray );

    for ( TInt i( 0 ); i < destArray.Count(); i++ )

        {

        RCmDestinationExt destination =

            iCmManagerExt.DestinationL( destArray[ i ] );

        CleanupClosePushL( destination );

        TInt connectionId = ConnectionMethodAlreadyExistsL( 

            destination, aSsid, securityModeToSet, aAlreadyExists, aSetHidden );

        if ( aAlreadyExists && KErrNotFound != connectionId )

           {

           RCmConnectionMethodExt connectionMethod =

               destination.ConnectionMethodByIDL( connectionId );

           CleanupClosePushL( connectionMethod );

           if ( destination.Id() != aDestination.Id() )

               {

               CCHUIDEBUG( "Copy existing connection method to destination" );

               aDestination.AddConnectionMethodL( 

                   connectionMethod.CreateCopyL() );

               }

           TRAP_IGNORE( aDestination.ModifyPriorityL( 

               connectionMethod, KCmHighestPriority ) );

           aDestination.UpdateL();

           CleanupStack::PopAndDestroy( &connectionMethod );

           CleanupStack::PopAndDestroy( &destination );

           CleanupStack::PopAndDestroy( &destArray );

           return connectionId;

           }

        CleanupStack::PopAndDestroy( &destination );

        }

    CleanupStack::PopAndDestroy( &destArray );

    TInt ret = KErrNone;

    RCmConnectionMethodExt newConnMethod = 

        aDestination.CreateConnectionMethodL( KUidWlanBearerType );

    CleanupClosePushL( newConnMethod );

    // Set attributes

    newConnMethod.SetStringAttributeL( CMManager::ECmName, aSsid );

    newConnMethod.SetStringAttributeL( CMManager::EWlanSSID, aSsid );

    if ( aSetHidden )

        {

        newConnMethod.SetBoolAttributeL( 

            CMManager::EWlanScanSSID, ETrue );

        }

    newConnMethod.SetIntAttributeL( 

        CMManager::EWlanSecurityMode, securityModeToSet );

    TRAP_IGNORE( aDestination.ModifyPriorityL( 

        newConnMethod, KCmHighestPriority ));

    aDestination.UpdateL();

    ret = newConnMethod.GetIntAttributeL( CMManager::ECmIapId );

    CConnectionUiUtilities* connUiUtils = CConnectionUiUtilities::NewL();

    CleanupStack::PushL( connUiUtils );

    TInt createdUid( 0 );

    createdUid = newConnMethod.GetIntAttributeL( CMManager::EWlanServiceId );

    HBufC* key = HBufC::NewL( KWlanWpaPskMaxLength );

    CleanupStack::PushL( key );

    TPtr keyPtr( key->Des() );

    TBool hex = EFalse;  

    if ( securityModeToSet == CMManager::EWlanSecModeWep )    

        {

        if ( connUiUtils->EasyWepDlg( &keyPtr, hex ) )

            {

            SaveSecuritySettingsL( aSecurityMode, key, hex, createdUid );

            }

        else

            {

            aDestination.DeleteConnectionMethodL( newConnMethod );

            aDestination.UpdateL();

            ret = KErrCancel;

            }

        }

    else if ( securityModeToSet == CMManager::EWlanSecModeWpa || 

              securityModeToSet == CMManager::EWlanSecModeWpa2 )

        {

        if ( connUiUtils->EasyWpaDlg( &keyPtr ) )

            {

            SaveSecuritySettingsL( aSecurityMode, key, hex, createdUid );

            }

        else

            {

            aDestination.DeleteConnectionMethodL( newConnMethod );

            aDestination.UpdateL();

            ret = KErrCancel;

            }

        }

    else

        {

        CCHUIDEBUG( "AddNewConnectionMethodL - WlanConnectionSecurityOpen" );

        }

    CleanupStack::PopAndDestroy( key );          

    CleanupStack::PopAndDestroy( connUiUtils );   

    CleanupStack::PopAndDestroy( &newConnMethod );

    CCHUIDEBUG2( "AddNewConnectionMethodL - return: %d", ret );

    return ret;

    }