// Copyright (c) 2001-2009 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:

// Secure Sockets

// 

//

/**

 @file securesocket_internal.h

*/

#ifndef __SECURESOCKET_INTERNAL_H__

#define __SECURESOCKET_INTERNAL_H__

/** 

 * Maximum length of the protocol name. 

 * 

 * @internalComponent

 */

const TInt KMaxProtocolName = 32;

class TSecSocketProtocol

/** 

 * The secure socket protocol class. 

 * 

 * @internalComponent

 *

 * @since v7.0 

 */

	{

public:

	/** Protocol name. */

	TBuf<KMaxProtocolName> iName;

	/** Handle to the DLL. */

	RLibrary iLibrary;

	static inline TInt Offset()

	/** 

	* Gets the offset to the iSlink member.

	* 

	* @return The offset to the iSlink member. */

		{return _FOFF(TSecSocketProtocol,iSlink);}

	// Moved the implementation to the cpp file

	virtual ~TSecSocketProtocol();

private:

    TSglQueLink   iSlink;

	};

class TSecureSocketGlobals

/** 

 * Class to store the Secure Sockets Globals. 

 * 

 * @internalComponent

 * 

 * @since v7.0 

 */

	{

public:

	inline TSecureSocketGlobals():

			iSecureSocketProtocols(TSecSocketProtocol::Offset()),

	/** Constructor. */

			iSecureSocketProtocolsIter(iSecureSocketProtocols),

			iUseCount(0){};	

	/** List of supported protocols. */

	TSglQue<TSecSocketProtocol> iSecureSocketProtocols;

	/** A templated class that provides for iterating through the list of supported 

	* protocols. */

	TSglQueIter<TSecSocketProtocol> iSecureSocketProtocolsIter;

	/** Use counter. */

	TInt iUseCount;

	};

class MGenericSecureSocket;

/** 

 * Definition for the entry point function exported by Secure Socket modules. 

 * 

 * @internalComponent

 */

typedef TInt (*TSecSockDllLibraryFunction)( RSocket& aSocket, const TDesC& aProtocol );

typedef TInt (*TSecSockDllLibraryGenericFunction)(MGenericSecureSocket& aSocket, const TDesC& aProtocol);

/** 

 * Definition for the entry point for the cleanup function exported by secureSocket modules

 * 

 * @internalComponent

 */

typedef void (*TSecSockDllUnloadFunction)( TAny* );

class CSecureSocketLibraryLoader : public CBase

/** 

 * Factory class for creating secure sockets. 

 * 

 * @internalAll

 *

 * @since v6.2 */

 // Create and reference Secure Sockets

	{

public:

	static  TInt OpenL(const TDesC& aProtocolName,TSecSockDllLibraryFunction& anEntryPoint);

	static  TInt OpenL(const TDesC& aProtocolName, TSecSockDllLibraryGenericFunction& aEntryPoint);

	static void FindItemInDbL(const TDesC& aProtocolName, TDes& aLibraryName);

	IMPORT_C static	void Unload();

private:

	static  void OpenWithIdL(TInt aId, const TDesC& aProtocolName, TLibraryFunction& aEntryPoint);

	};

#endif // __SECURESOCKET_H__