/*

* Copyright (c) 2002 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: 

*

*/

// INCLUDE FILES

#include    "CCMSSequence.h"

// ============================ MEMBER FUNCTIONS ===============================

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

// CCMSSequence::CCMSSequence

// C++ default constructor can NOT contain any code, that

// might leave.

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

//

CCMSSequence::CCMSSequence()

    {

    }

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

// CCMSSequence::DecodeSequenceLC

// Decodes raw-data to ASN.1 modules, pushes items to cleanupstack

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

EXPORT_C CArrayPtr<TASN1DecGeneric>* CCMSSequence::DecodeSequenceLC( const TDesC8& aRawData )

	{

	CArrayPtr<TASN1DecGeneric>* items = NULL;

	// Check we've got a sequence

	TASN1DecGeneric decGen( aRawData );

	decGen.InitL();

	// Accept only sequences or sets

	if( ( decGen.Tag() != EASN1Sequence ) &&

		( decGen.Tag() != EASN1Set ) )

		{

		User::Leave(KErrArgument);

		}

	else

		{

		// Decode the sequence

		TASN1DecSequence decSeq;

		items = decSeq.DecodeDERLC( decGen );

		}

	return items;

	}

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

// CCMSSequence::DecodeSequenceLC

// Decodes raw-data to ASN.1 modules, pushes items to cleanupstack

// Validates that there is right number of modules, leaves with KErrArgument if

// not.

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

EXPORT_C CArrayPtr<TASN1DecGeneric>* CCMSSequence::DecodeSequenceLC( const TDesC8& aRawData,

														 const TInt aMinTerms,

														 const TInt aMaxTerms)

	{

	CArrayPtr<TASN1DecGeneric>* items = DecodeSequenceLC(aRawData);

	TInt count = items->Count();

	if( ( count < aMinTerms ) ||

		( count > aMaxTerms ) )

		{

		// not in the range, leave

		User::Leave( KErrArgument );

		}

	return items;

	}

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

// CCMSSequence::EncodeL

// Encrypts this instance to descriptor

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

void CCMSSequence::EncodeL( HBufC8*& aResult ) const

	{

	CASN1EncBase* root = EncoderLC();

	// encode the object in a DER encoding

	HBufC8* der = CreateDerEncodingL( root );

	CleanupStack::PopAndDestroy( root );

	aResult = der;

	}

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

// CCMSSequence::CreateDerEncodingLC()

// Creates DER encoding

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

EXPORT_C HBufC8* CCMSSequence::CreateDerEncodingL( CASN1EncBase* aEncoding )

	{

	// encode the object in a DER encoding

	HBufC8* der = HBufC8::NewMaxLC( aEncoding->LengthDER() );

	TPtr8 pder( der->Des() );

	TUint pos = 0;

	aEncoding->WriteDERL( pder, pos );

	CleanupStack::Pop( der );

	return der;

	}

//  End of File