cryptoservices/certificateandkeymgmt/x500/dstringdec.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 31 Aug 2010 17:00:08 +0300
branchRCL_3
changeset 95 641f389e9157
parent 8 35751d3474b7
permissions -rw-r--r--
Revision: 201035 Kit: 201035
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/*
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* Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: 
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* This file contains the implementation of the directory string ASN1 object
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*
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*/
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#include "X500dec.h"
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/*
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  This file contains the implementation of the following ASN1 data structures:
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	DirectoryString ::= CHOICE {
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		  teletexString             TeletexString (SIZE (1..MAX)),
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		  printableString           PrintableString (SIZE (1..MAX)),
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		  universalString           UniversalString (SIZE (1..MAX)),
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		  utf8String              UTF8String (SIZE (1..MAX)),
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		  bmpString               BMPString (SIZE(1..MAX))   }
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*/
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TASN1DecX500DirectoryString::TASN1DecX500DirectoryString(void):
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iMaxLength(KMaxTInt)
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	{
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	}
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HBufC* TASN1DecX500DirectoryString::DecodeDERL(const TDesC8& aSource,TInt& aPos, TInt aMaxLength)
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	{
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	TPtrC8 Ptr=aSource.Right(aSource.Length()-aPos);
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	TASN1DecGeneric gen(Ptr);
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	gen.InitL();
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	aPos+=gen.LengthDER();
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	HBufC* Object=DecodeContentsL(gen, aMaxLength);
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	return Object;
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	}
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HBufC* TASN1DecX500DirectoryString::DecodeDERL(const TASN1DecGeneric& aSource, TInt aMaxLength)
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	{
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	return DecodeContentsL(aSource, aMaxLength);
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	}
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HBufC* TASN1DecX500DirectoryString::DecodeContentsL(const TASN1DecGeneric& aSource, TInt aMaxLength)
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	{
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	HBufC* res = NULL;
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	switch (aSource.Tag())
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		{
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		case EASN1TeletexString:
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			{
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			TASN1DecTeletexString tStr;
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			res = tStr.DecodeDERL(aSource);
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			break;
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			}
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		case EASN1PrintableString:
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			{
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			TASN1DecPrintableString pStr;
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			res = pStr.DecodeDERL(aSource);
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			break;
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			}
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		case EASN1IA5String:
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			{
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			TASN1DecIA5String pStr;
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			res = pStr.DecodeDERL(aSource);
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			break;
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			}
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		case EASN1UTF8String:
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			{
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			TASN1DecUTF8String pStr;
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			res = pStr.DecodeDERL(aSource);
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			break;
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			}												
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		case EASN1BMPString:
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			{
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			TASN1DecBMPString pStr;
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			res = pStr.DecodeDERL(aSource);
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			break;	
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			}									
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		default:
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			{
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			User::Leave(KErrNotSupported);
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			break;
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			}
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		}
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	if (res->Length() > aMaxLength)
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		{
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		delete res;
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		User::Leave(KErrArgument);
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		}
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	return res;
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	}
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void TASN1DecX500DirectoryString::SetMaxLength(TInt aLength)
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// perhaps this should have some kind of testing to make sure the current 
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// contents are valid...this is not as easy as it might first appear, the 
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// contents might be eight or sixteen bits.
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	{
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	iMaxLength=aLength;
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	}