1 /*

     2 * Copyright (c) 2005-2008 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:   Implementation of the WlanPrivacyModeFilterWpa class

    15 *

    16 */

    17 

    18 /*

    19 * %version: 10 %

    20 */

    21 

    22 #include "config.h"

    23 #include "UmacPrivacyModeFilterWpa.h"

    24 

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

    26 

    27 // -----------------------------------------------------------------------------

    28 // 

    29 // -----------------------------------------------------------------------------

    30 //

    31 TBool WlanPrivacyModeFilterWpa::operator()( 

    32     const SDataFrameHeader& aFrameheader, 

    33     TBool aUserDataEnabled, 

    34     TUint16 aEthernetType,

    35     TBool aUnicastKeyExists, 

    36     TBool aAesOrTkipOrWapiEncrypted ) const

    37     {

    38     TBool ret( EFalse );

    39 

    40     

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

    42            aFrameheader.IsWepBitSet()

    43            // AND are going to protocol stack 

    44            && aEthernetType != KEapolType

    45            // AND user data is enabled

    46            && aUserDataEnabled 

    47          )

    48          ||// OR

    49          ( // are EAPOL frames 

    50            aEthernetType == KEapolType

    51            // AND have WEP bit on

    52            && aFrameheader.IsWepBitSet()

    53            // AND are AES or TKIP encrypted

    54            && aAesOrTkipOrWapiEncrypted 

    55          )

    56          ||// OR

    57          ( // are EAPOL frames

    58            aEthernetType == KEapolType

    59            // AND have WEP bit off

    60            && !( aFrameheader.IsWepBitSet() )

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

    62            && !aUnicastKeyExists 

    63            // AND are NOT AES or TKIP encrypted

    64            && !aAesOrTkipOrWapiEncrypted 

    65          )

    66          // OR are our test frames

    67          || aEthernetType == KBounceType

    68        )

    69         {

    70         ret = ETrue;

    71         }

    72     else

    73         {

    74         OsTracePrint( KRxFrame, (TUint8*)

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

    76         OsTracePrint( KRxFrame, (TUint8*)

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

    78             aFrameheader.IsWepBitSet() );

    79         OsTracePrint( KRxFrame, (TUint8*)

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

    81             aEthernetType );

    82         OsTracePrint( KRxFrame, (TUint8*)

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

    84             aUserDataEnabled );

    85         OsTracePrint( KRxFrame, (TUint8*)

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

    87             aUnicastKeyExists );

    88         OsTracePrint( KRxFrame, (TUint8*)

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

    90             aAesOrTkipOrWapiEncrypted );

    91         }

    92     return ret;

    93     }