/*

* Copyright (c) 2008-2009 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:  Class that logs ike messages in pcap format

*

*/

#ifndef IKEPCAPTRACE_H

#define IKEPCAPTRACE_H

#include <f32file.h>

class TInetAddr;

/**

 *  PCap tracer of IKE messages.

 *

 *  Class that logs ike messages in pcap format

 * 

 */

class CIkePcapTrace : public CBase

    {        

public:

    enum TEncryptionType

        {

        EEncrDes = 2, 

        EEncrDes3 = 3,

        EEncrAesCbc = 12

        };

    static CIkePcapTrace* NewL(const TDesC& aLogFolder);

    ~CIkePcapTrace();

    /**

     * Traces the IKE message. 

     *

     * @param aMessage Traced IKE message

     * @param aSourceAddress IP address of the message sender (only IPv4 is supported)

     * @param aDestinationAddress IP address of the message receiver  (only IPv4 is supported)

     * @param aEncryptionType Used encryption algorithm. 

     *                        If the aMessage datagram is IKEv1 or if the IKEv2 datagram

     *                        does not contain encryption payload this parameter is not used.

     */

    void TraceMessage(const TDesC8& aMessage, 

                      const TInetAddr& aSourceAddress, 

                      const TInetAddr& aDestinationAddress,

                      TEncryptionType aEncryptionType);

private:

    CIkePcapTrace();

    void ConstructL(const TDesC& aLogFolder);

    void DoTraceMessage(TPtr8& aMsgCopy, 

                        const TInetAddr& aSourceAddress, 

                        const TInetAddr& aDestinationAddress,

                        TEncryptionType aEncryptionType);

    TInt WritePcapHeader();

    TInt WriteRecordHeader(TUint32 aIkeMsgLength);

    TInt WriteIpAndUdpHeader(const TDesC8& aMessage,

                             TInetAddr aSourceAddress, 

                             TInetAddr aDestinationAddress);

    TInt WriteNonEspMarker();

    TInt WriteIkeMessage(TPtr8& aMsgCopy, TEncryptionType aEncryptionType);

    TInt WriteIkeV1Message(TPtr8& aMsgCopy);

    TInt WriteIkeV2Message(TPtr8& aMsgCopy, TEncryptionType aEncryptionType);

    RFs     iFileServer;

    RFile   iPcapFile;

    TBool iWriteTrace;

    };

#endif //IKEPCAPTRACE_H