/*+
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* Copyright (c) 2005-2009 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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* Implementation for testing bit string encoding/decoding+
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*+
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*/+
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+
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+
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#include "testbitstr.h"+
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#include "tasn1normaltest.h"+
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#include <asn1enc.h>+
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#include <asn1dec.h>+
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+
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#include <e32cons.h>+
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+
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CTestBitStr* CTestBitStr::NewL(CASN1NormalTest &aASN1Action)+
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	{+
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	CTestBitStr* test = new (ELeave) CTestBitStr(aASN1Action);+
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	return test;+
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	}+
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+
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CTestBitStr::CTestBitStr(CASN1NormalTest &aASN1Action) : CTestBase(aASN1Action)+
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	{+
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	};+
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+
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void CTestBitStr::GetName(TDes& aBuf)+
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	{+
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	aBuf.Copy(_L("Test Bit String"));+
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	}+
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+
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TBool CTestBitStr::PerformTestsL(CConsoleBase& aConsole)+
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	{+
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	TBool pass = ETrue;+
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	+
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	+
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	// Test the encoding varying length bit strings by encoding 65+
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	// different bit strings with a single bit set in each position. Position -1+
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	// indicates the empty bit string.+
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	for (TInt8 bitNum = -1; bitNum < 64; bitNum++)+
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		{+
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		TBuf8<8> bitStr;				+
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		TUint numOctets;+
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		+
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	    if (bitNum >= 0)+
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	    	{+
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	    	numOctets = 1 + (bitNum / 8);+
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	    	}+
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	    else +
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	    	{+
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	    	numOctets = 0;+
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	    	}+
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		+
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		bitStr.SetLength(numOctets);+
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		bitStr.FillZ();+
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				+
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		TUint8 valToEncode = 0;+
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		if (bitNum >= 0 )+
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			{+
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			// The most significant bit in the most significant byte is bit zero+
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			valToEncode = (TUint8) (1 << (7 - (bitNum % 8)));+
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			bitStr[bitNum / 8] = valToEncode;+
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			}+
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			+
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		// Get the encoder and decoder+
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		CASN1EncBitString* encoder = CASN1EncBitString::NewLC(bitStr, bitNum + 1);+
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		TASN1DecBitString decoder;+
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+
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		// Prepare an encode buffer+
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		TInt totalLength = encoder->LengthDER();+
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		HBufC8* encodeBuffer = HBufC8::NewMaxLC(totalLength);		+
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		TPtr8 tEncodeBuf = encodeBuffer->Des();		+
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	+
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		// Write into the encode buffer+
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		TUint writeLength = 0;+
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		encoder->WriteDERL(tEncodeBuf, writeLength);+
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+
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		// Read it out again and check lengths plus encoded value+
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		TInt readLength = 0;+
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		HBufC8* decodeBuffer = decoder.ExtractOctetStringL(tEncodeBuf, readLength);+
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		CleanupStack::PushL(decodeBuffer);+
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		TPtr8 tDecodeBuf = decodeBuffer->Des();+
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						+
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		if (writeLength != STATIC_CAST(TUint, readLength))+
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			{+
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			aConsole.Write(_L("ERROR!\n"));+
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			iASN1Action.ReportProgressL(KErrASN1EncodingError, 1, 1);+
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			pass = EFalse;			+
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			}+
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		else if (bitNum >= 0 && valToEncode != tDecodeBuf[bitNum / 8])+
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			{+
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			aConsole.Write(_L("ENCODING ERROR!\n"));+
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			iASN1Action.ReportProgressL(KErrASN1EncodingError, 1, 1);+
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			pass = EFalse;			+
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			}			+
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		else+
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			{+
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			iASN1Action.ReportProgressL(KErrNone, bitNum + 1, 65);+
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			}	+
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			+
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		CleanupStack::PopAndDestroy(3, encoder); // decodeBuffer, encodeBuffer, encoder			+
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		}+
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		+
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	return pass;+
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	}+
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