/**

* Copyright (c) 2003-2009 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:

* Alert protocol messages class header file.

* Describes a concrete class for SSL3.0/TLS1.0 Alert Protocol messages (events).

* These messages convey the severity of the message and a description of the alert.  

* 

*

*/

/**

 @file AlertProtocolEvents.h

*/

#ifndef _ALERTPROTOCOLEVENTS_H_

#define _ALERTPROTOCOLEVENTS_H_

#include "tlsevent.h"

const TUint8 KAlertMsgLength = 2;	// Length of an Alert message.

// Alert level

enum ETlsAlertLevel

{

	EAlertWarning = 1,					/** Warning */

	EAlertFatal = 2						/** Fatal alert */

};

class CRecordComposer;

class CStateMachine;

class CSendAlert : public CTlsEvent

/**

 * @class This class describes an Alert message sent by the protocol.

 * @brief This message consists of 2 bytes describing an Alert level and its

 * description. It is compressed and encrypted under the current connection state.

 *

 * Note that Alert messages (sent or received) are not part of the Handshake protocol 

 * and as such do not derive from the CHandshakeTransmit or CHandshakeReceive classes.

 */

{

public:

   CSendAlert( CStateMachine& aStateMachine, CRecordComposer& aRecordComposer );

   virtual CAsynchEvent* ProcessL( TRequestStatus& aStatus );

private:

   CRecordComposer& iRecordComposer;

   TBuf8<KAlertMsgLength> iAlertMsg; //message to send

};

class CRecordParser;

class CRecvAlert : public CTlsEvent

/**

 * @class This class describes an Alert message received by the protocol (i.e., sent 

 * by the server). 

 * @brief This message consists of 2 bytes describing an Alert level and its

 * description. It is decompressed and decrypted under the current connection 

 * state.

 */

{

public:

   CRecvAlert( CStateMachine& aStateMachine, CRecordParser& aRecordParser, CSendAlert& aSendAlert );

   virtual TBool AcceptRecord( TInt aRecordType ) const;

   virtual CAsynchEvent* ProcessL( TRequestStatus& aStatus );

public:

   CRecordParser& iRecordParser;

   CSendAlert& iSendAlert;

};

// Inline methods

inline CSendAlert::CSendAlert( CStateMachine& aStateMachine, CRecordComposer& aRecordComposer ) :

   CTlsEvent( NULL, &aStateMachine ),

   iRecordComposer( aRecordComposer )

/**

 * Constructor

 */

{

}

inline CRecvAlert::CRecvAlert( CStateMachine& aStateMachine, CRecordParser& aRecordParser, CSendAlert& aSendAlert ) :

   CTlsEvent( NULL, &aStateMachine ),

   iRecordParser( aRecordParser ),

   iSendAlert( aSendAlert )

/**

 * Constructor

 */

{

}

#endif