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/*
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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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#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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#include <e32cons.h>
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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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CTestBitStr::CTestBitStr(CASN1NormalTest &aASN1Action) : CTestBase(aASN1Action)
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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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TBool CTestBitStr::PerformTestsL(CConsoleBase& aConsole)
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{
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TBool pass = ETrue;
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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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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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bitStr.SetLength(numOctets);
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bitStr.FillZ();
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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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// 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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// 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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// Write into the encode buffer
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TUint writeLength = 0;
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encoder->WriteDERL(tEncodeBuf, writeLength);
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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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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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CleanupStack::PopAndDestroy(3, encoder); // decodeBuffer, encodeBuffer, encoder
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}
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return pass;
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}
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