/*

* Copyright (c) 2005-2008 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:   Implementation of the WlanPrivacyModeFilterWpa class

*

*/

/*

* %version: 10 %

*/

#include "config.h"

#include "UmacPrivacyModeFilterWpa.h"

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

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

// 

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

//

TBool WlanPrivacyModeFilterWpa::operator()( 

    const SDataFrameHeader& aFrameheader, 

    TBool aUserDataEnabled, 

    TUint16 aEthernetType,

    TBool aUnicastKeyExists, 

    TBool aAesOrTkipOrWapiEncrypted ) const

    {

    TBool ret( EFalse );

    if ( ( // allow all that have WEP bit on

           aFrameheader.IsWepBitSet()

           // AND are going to protocol stack 

           && aEthernetType != KEapolType

           // AND user data is enabled

           && aUserDataEnabled 

         )

         ||// OR

         ( // are EAPOL frames 

           aEthernetType == KEapolType

           // AND have WEP bit on

           && aFrameheader.IsWepBitSet()

           // AND are AES or TKIP encrypted

           && aAesOrTkipOrWapiEncrypted 

         )

         ||// OR

         ( // are EAPOL frames

           aEthernetType == KEapolType

           // AND have WEP bit off

           && !( aFrameheader.IsWepBitSet() )

           // AND AP <-> client unicast key is NOT set

           && !aUnicastKeyExists 

           // AND are NOT AES or TKIP encrypted

           && !aAesOrTkipOrWapiEncrypted 

         )

         // OR are our test frames

         || aEthernetType == KBounceType

       )

        {

        ret = ETrue;

        }

    else

        {

        OsTracePrint( KRxFrame, (TUint8*)

            ("UMAC: WlanPrivacyModeFilterWpa::operator: frame filtered") );

        OsTracePrint( KRxFrame, (TUint8*)

            ("UMAC: WlanPrivacyModeFilterWpa::operator: wep bit: %d"), 

            aFrameheader.IsWepBitSet() );

        OsTracePrint( KRxFrame, (TUint8*)

            ("UMAC: WlanPrivacyModeFilterWpa::operator: ether type: 0x%04x"), 

            aEthernetType );

        OsTracePrint( KRxFrame, (TUint8*)

            ("UMAC: WlanPrivacyModeFilterWpa::operator: UserDataEnabled: %d"), 

            aUserDataEnabled );

        OsTracePrint( KRxFrame, (TUint8*)

            ("UMAC: WlanPrivacyModeFilterWpa::operator: UnicastKeyExists: %d"), 

            aUnicastKeyExists );

        OsTracePrint( KRxFrame, (TUint8*)

            ("UMAC: WlanPrivacyModeFilterWpa::operator: AES, TKIP or WAPI encrypted: %d"),

            aAesOrTkipOrWapiEncrypted );

        }

    return ret;

    }