/*

* Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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: 

*

*/

/**

 @file 

*/

#include <asnpkcs.h>

#include <ecom/ecom.h>

#include <ecom/implementationproxy.h>

#include "pkcs8recog.h"

const TInt KRecognizerValue = 0x1020361C;

const TUid KUidMimeRecognizer = {KRecognizerValue};

_LIT8(KDataTypePkcs8KeyPair, "application/pkcs8");

_LIT8(KDataTypePkcs8EncryptedKeyPair, "application/pkcs8-encrypted");

const TInt KSupportedDataTypesNumber = 2;

// ----------------------------------------------------------------------------

// CApaPkcs8Recognizer

//

CApaPkcs8Recognizer::CApaPkcs8Recognizer()

	: CApaDataRecognizerType(KUidMimeRecognizer, CApaDataRecognizerType::ENormal)

	{

	iCountDataTypes = KSupportedDataTypesNumber;

	}

TUint CApaPkcs8Recognizer::PreferredBufSize()

	{

	return Max(KIsPKCS8DataMinLength, KIsEncryptedPKCS8DataMinLength);

	}

TDataType CApaPkcs8Recognizer::SupportedDataTypeL(TInt aIndex) const

	{

	__ASSERT_DEBUG(aIndex >= 0 && aIndex < KSupportedDataTypesNumber,

					User::Panic(_L("PKCS8RECOG"), 0));

	switch (aIndex)

		{

		case 0:

			return TDataType(KDataTypePkcs8KeyPair);

		case 1:

			return TDataType(KDataTypePkcs8EncryptedKeyPair);

		// Used to prevent warning about return paths not all returning a value

		default:

			return TDataType(KDataTypePkcs8KeyPair);

		}

	}

void CApaPkcs8Recognizer::DoRecognizeL(const TDesC& /*aName*/, const TDesC8& aBuffer)

	{

	// Ensure length is sufficient for checking type pkcs8

	if (aBuffer.Size() >= KIsPKCS8DataMinLength)

		{

		if (TASN1DecPKCS8::IsPKCS8Data(aBuffer))

			{

			iDataType = TDataType(KDataTypePkcs8KeyPair);

			iConfidence = ECertain;

			return;

			}

		}

	// Ensure length is sufficient for checking type pkcs8-encrypted	

	if (aBuffer.Size() >= KIsEncryptedPKCS8DataMinLength) 

		{

		if (TASN1DecPKCS8::IsEncryptedPKCS8Data(aBuffer))

			{

			iDataType = TDataType(KDataTypePkcs8EncryptedKeyPair);

			iConfidence = ECertain;

			return;

			}

		}

	// type not recognized

	}

CApaDataRecognizerType* CApaPkcs8Recognizer::CreateRecognizerL()

	{

	return new (ELeave) CApaPkcs8Recognizer();

	}

const TImplementationProxy ImplementationTable[] = 

	{

		IMPLEMENTATION_PROXY_ENTRY(0x1020361B, CApaPkcs8Recognizer::CreateRecognizerL)

	};

EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount)

	{

	aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy);

	return ImplementationTable;

	}