// 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:

//

#ifndef		__VALIDATIONFILTER_H__

#define		__VALIDATIONFILTER_H__

#include <e32std.h>

#include <e32base.h>

#include <http/mhttpfilter.h>

#include <http/rhttpsession.h>

#include <http/framework/httplogger.h>

#include <http/cecomfilter.h>

/** The validation filter checks requests and responses to ensure that they are valid. It 

	also adds either a succeded or failed event. Most clients will only be intrested in this

	simplified reporting of success. Any error codes are still sent to the client.

*/

//##ModelId=3B1E52AC018D

class CValidationFilter : public CEComFilter, public MHTTPFilter

	{

public:

	static CEComFilter* InstallFilterL(TAny* aSession);	

	//##ModelId=3B1E52AC0239

	~CValidationFilter();

public:	// Methods from MHTTPFilterBase

	// @see MHTTPFilterBase::MHFRunL

	//##ModelId=3B1E52AC022F

	virtual void MHFRunL(RHTTPTransaction aTransaction, const THTTPEvent& aEvent);

	// @see MHTTPFilterBase::MHFSessionRunL

	virtual void MHFSessionRunL(const THTTPSessionEvent& aEvent);

	// @see MHTTPFilterBase::MHFRunError

	//##ModelId=3BA600490296

	virtual TInt MHFRunError(TInt aError, RHTTPTransaction aTransaction,

							 const THTTPEvent& aEvent);

	// @see MHTTPFilterBase::MHFSessionRunError

	virtual TInt MHFSessionRunError(TInt aError, const THTTPSessionEvent& aEvent);

public:	// Methods from MHTTPFilter

	// @see MHTTPFilter::MHFUnload

	//##ModelId=3B1E52AC0225

	virtual void MHFUnload(RHTTPSession aSession, THTTPFilterHandle aHandle);

	// @see MHTTPFilter::MHFLoad

	virtual void MHFLoad(RHTTPSession aSession, THTTPFilterHandle aHandle);

private:

	// Constructor

	//##ModelId=3B1E52AC0224

	 CValidationFilter();

	// For 2 phase construction. Also installs the filter.

	//##ModelId=3B1E52AC0219

	void ConstructL(RHTTPSession aSession);

	//##ModelId=3B1E52AC020F

	void ValidateRequestMethodL(RHTTPTransaction aTransaction);

	//##ModelId=3B1E52AC01FB

	TBool ValidateRequestHeadersL(RHTTPTransaction aTransaction);

	//##ModelId=3B1E52AC01E7

	void ValidateRequestGetL(RHTTPTransaction aTransaction);

	//##ModelId=3B1E52AC01DE

	void ValidateRequestPostL(RHTTPTransaction aTransaction);

	//##ModelId=3B1E52AC01D5

	void ValidateRequestPutL(RHTTPTransaction aTransaction);

	//##ModelId=3B1E52AC01D3

	void ValidateRequestTraceL(RHTTPTransaction aTransaction);

	//##ModelId=3B1E52AC01C9

	void ValidateRequestHeadL(RHTTPTransaction aTransaction);

	void ValidateRequestOptionsL(RHTTPTransaction aTransaction);

	//##ModelId=3B1E52AC0205

	/** Validate status codes. Anything from 400->599 is an error or warning

		@return ETrue if the status code indicates a problem with the transaction

	*/

	//##ModelId=3BA60049020A

	TBool ValidateResponseStatusCode(RHTTPTransaction aTransaction);

	/** Fails a request if it contains a body. 

		@return returns ETrue if the request did contain a body

	*/

	//##ModelId=3BA6004901CE

	TBool RequestFailIfContainsBodyL(RHTTPTransaction aTransaction);

	/** Fails and cancels a transaction

		@param aTransaction The transaction to cancel

		@param aStatus The status or error that caused the transaction to fail

	*/

	//##ModelId=3BA600490174

	void FailAndCancelL(RHTTPTransaction aTransaction, THTTPEvent aStatus);

private:

	//##ModelId=3B1E52AC01C1

	TBool iTransactionFailed;

	//##ModelId=3B1E52AC01A3

	RHTTPMessage iCurrentMessage;   // it's a small object

	//##ModelId=3B1E52AC019B

	RStringPool iStringPool;

	const TStringTable&    iStringTable;

	// HTTP logger handle, debug only.

	__DECLARE_LOG

	};

#endif // 	__VALIDATIONFILTER_H__