/*

* Copyright (c) 2005-2009 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: 

*

*/

#include "pkcs12attribute.h"

using namespace PKCS12;

CDecPkcs12Attribute::CDecPkcs12Attribute()

	{

	}

EXPORT_C CDecPkcs12Attribute* CDecPkcs12Attribute::NewL(const TDesC8& aBagAttributes)

	{

	CDecPkcs12Attribute* self = new (ELeave) CDecPkcs12Attribute;

    CleanupStack::PushL(self);

	self->ConstructL(aBagAttributes);

	CleanupStack::Pop(self);

	return self;	

	}

CDecPkcs12Attribute::~CDecPkcs12Attribute()

	{

	delete iAttributeId;	

	iAttributeValue.ResetAndDestroy();

	iAttributeValue.Close();

	}

void CDecPkcs12Attribute::ConstructL(const TDesC8& aBagAttributes)

	{

	TASN1DecGeneric seqGen(aBagAttributes);

	seqGen.InitL();

	// Check if this is a Sequence

	if (seqGen.Tag() != EASN1Sequence || seqGen.Class() != EUniversal)

		{

		User::Leave(KErrArgument);

		}

	TASN1DecSequence seq;

	CArrayPtrFlat<TASN1DecGeneric>* attributeSet = seq.DecodeDERLC(seqGen);

	const TASN1DecGeneric* attributeSetAt0 = attributeSet->At(0);

	if(attributeSetAt0->Tag() != EASN1ObjectIdentifier || attributeSetAt0->Class() != EUniversal)

		{

		User::Leave(KErrArgument);

		}

	// Decode the ObjectIdentifier

	TASN1DecObjectIdentifier oid;

	iAttributeId = oid.DecodeDERL(*attributeSetAt0); 

	const TASN1DecGeneric* attributeSetAt1 = attributeSet->At(1);

	if(attributeSetAt1->Tag() != EASN1Set || attributeSetAt1->Class() != EUniversal)

		{

		User::Leave(KErrArgument);

		}

	// Attribute Set

	TASN1DecSet decSet;

    CArrayPtrFlat<TASN1DecGeneric>* attributeValues = decSet.NewDERLC(attributeSetAt1->Encoding());

    TInt attributeCount = attributeValues->Count();

    for(TInt index = 0; index < attributeCount; ++index)         

	   	{

	   	const TASN1DecGeneric* attributeValuesAt = attributeValues->At(index);

		TASN1DecGeneric seqGen(*attributeValuesAt);

		seqGen.InitL();

		TPtrC8 attrValue = seqGen.Encoding();

		TDesC8* attributeVal = attrValue.AllocL();

		CleanupStack::PushL(attributeVal);

		iAttributeValue.AppendL(attributeVal);

		CleanupStack::Pop(attributeVal);

	   	}

    CleanupStack::PopAndDestroy(2,attributeSet); // attributeSet,attributeValues    

	}	

EXPORT_C const TDesC& CDecPkcs12Attribute::AttributeId() const

	{

	return *iAttributeId;	

	}

EXPORT_C const RPointerArray<TDesC8>& CDecPkcs12Attribute::AttributeValue() const

	{

	return iAttributeValue;	

	}