/*

* Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* which accompanies this distribution, and is available

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

* Name          : sipauthheaderbase.h

* Part of       : SIP Codec

* Version       : SIP/5.0 

*

*/

#ifndef CSIPAUTHHEADERBASE_H

#define CSIPAUTHHEADERBASE_H

//  INCLUDES

#include "sipheaderbase.h"

// FORWARD DECLARATIONS

class CSIPParamContainerBase;

// CLASS DECLARATION

/**

* @publishedAll

* @released

*

* A base class for SIP Authorization-, Proxy-Authenticate-, 

* Proxy-Authorization- and WWW-Authenticate-headers

*

* @lib sipcodec.lib

*/

class CSIPAuthHeaderBase : public CSIPHeaderBase

	{

	public: // Constructors and destructor

		/**

		* Destructor.

		*/

		IMPORT_C virtual ~CSIPAuthHeaderBase();

	public:	// New functions

		/**

		* @return the value of the auth-scheme

		*/

		IMPORT_C RStringF AuthScheme() const;

		/**

		* Checks if a parameter is present

		* @param aName the name of the parameter

		* @return ETrue if present, otherwise EFalse

		*/

		IMPORT_C TBool HasParam(RStringF aName) const;

		/**

		* Gets a parameter value

		* @pre HasParam(aName) == ETrue

		* @param aName the name of the parameter

		* @return the parameter value if present,

		*         otherwise a zero-length length value.

		*/

		IMPORT_C RStringF ParamValue(RStringF aName) const;

		/**

		* Gets a parameter value stored as a descriptor

		* @pre HasParam(aName) == ETrue

		* @param aName the name of the parameter

		* @return the parameter value if present,

		*         otherwise a zero-length length value.

		*/

		IMPORT_C const TDesC8& DesParamValue(RStringF aName) const;

		/**

		* Sets a parameter with a value. 

		* Takes copies of the name and value,

		* so if the RStringFs have been dynamically allocated,

		* they can be closed if necessary after the function returns.

		* @pre HasParam(aName) == EFalse

		* @param aName the name of the parameter

		* @param aValue the parameter value to set

		*/

		IMPORT_C void SetParamL(RStringF aName, RStringF aValue);

		/**

		* Sets a parameter with a value. 

		* Takes copies of the name 

		* so if the RStringF have been dynamically allocated,

		* they can be closed if necessary after the function returns.

		* Stores the parameter value as a descriptor, so that the 

		* case-sensitivity is not lost in RStringF-descriptor conversions. 

		* @pre HasParam(aName) == EFalse

		* @param aName the name of the parameter

		* @param aValue the parameter value to set

		*/

		IMPORT_C void SetDesParamL(RStringF aName, const TDesC8& aValue);

		/**

		* Sets a parameter with a value and adds double quotes 

		* as the first and the last character in the value.

		* Takes copy of the name,

		* so if the RStringF has been dynamically allocated,

		* it can be closed if necessary after the function returns.

		* @pre HasParam(aName) == EFalse

		* @param aName the name of the parameter

		* @param aValue the parameter value 

		*        to which the double quotes will be added

		*/

		IMPORT_C void SetParamAndAddQuotesL(RStringF aName,

			                                const TDesC8& aValue);

		/**

		* Deletes a parameter

		* @param aName the parameter name to delete

		*/

		IMPORT_C void DeleteParam(RStringF aName);

	public: // From CSIPHeaderBase

		/**

		* From CSIPHeaderBase ExternalizeSupported

		*/

		IMPORT_C virtual TBool ExternalizeSupported() const;

	public: // From CSIPHeaderBase, for internal use

		TBool EncodeMultipleToOneLine() const;

		TBool MoreThanOneAllowed() const;

		TPreferredPlace PreferredPlaceInMessage() const;

        virtual HBufC8* ToTextValueL() const;

	protected: // Constructors

		CSIPAuthHeaderBase();

		void ConstructL(RStringF aAuthScheme);

	protected: // New functions

		void SetAuthSchemeL(const TDesC8& aAuthScheme);

        void ParseL(const TDesC8& aValue);

        virtual const CSIPParamContainerBase& Params() const = 0;

        virtual CSIPParamContainerBase& Params() = 0;

	private: // Data

		RStringF iAuthScheme;

        TChar iSeparator;

	};

#endif // CSIPAUTHHEADERBASE_H

// End of File