/*

 * 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;	

 	}