/*

* Copyright (c) 2008-2009 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: 

* Example CTestStep derived implementation

*

*/

/**

 @file

 @internalTechnology

*/

#include "symmetric_mac_basic_data_step.h" 

#include <cryptospi/cryptomacapi.h>

using namespace CryptoSpi;

CSymmetricMacBasicDataStep::CSymmetricMacBasicDataStep()

	{

	}

CSymmetricMacBasicDataStep::~CSymmetricMacBasicDataStep()

	{

	}

TVerdict CSymmetricMacBasicDataStep::doTestStepPreambleL()

	{

	return EPass;

	}

TVerdict CSymmetricMacBasicDataStep::doTestStepL()

	{

	//Assume faliure, unless all is successful

	SetTestStepResult(EFail);

	TBool oOMCondition;

	// If OOMCondition has been set to true

	if (GetBoolFromConfig(ConfigSection(), _L("OOMCondition"),oOMCondition) && oOMCondition)

		{

		doOomTestL();

		}

	else

		{

		doTestL();

		}

	return TestStepResult();

	}

void CSymmetricMacBasicDataStep::doTestL()

	{

	INFO_PRINTF1(_L("*** Symmetric Mac - Basic Data ***"));

	INFO_PRINTF2(_L("HEAP CELLS: %d"), User::CountAllocCells());

	TPtrC keyPath;

	TVariantPtrC algorithm;

	if(	!GetStringFromConfig(ConfigSection(),KConfigEncryptKeyPath, keyPath) ||

		!GetStringFromConfig(ConfigSection(),KConfigAlgorithmUid, algorithm))

		{

		User::Leave(KErrNotFound);

		}

	// Create key 

	TKeyProperty keyProperty;

	CCryptoParams* keyParams = CCryptoParams::NewLC(); 

	HBufC8* convertKey = ReadInHexPlainTextL(keyPath);

	CleanupStack::PushL(convertKey);

	keyParams->AddL(*convertKey, KSymmetricKeyParameterUid);

	CKey* key=CKey::NewL(keyProperty, *keyParams);

	CleanupStack::PushL(key);

	// Create a Symmetric Mac with the values from the ini file	

	CMac* macImpl = NULL;

	TRAPD(err,CMacFactory::CreateMacL(macImpl,

										algorithm,

										*key,

										NULL));

	if (err != KErrNone)

		{

		CleanupStack::PopAndDestroy(3, keyParams); // keyParams, convertKey, key

		delete macImpl;

		ERR_PRINTF2(_L("*** FAIL: Failed to Create Symmetric Mac Object - %d ***"), err);

		User::Leave(err);

		}

	INFO_PRINTF1(_L("Plugin loaded."));

	CleanupStack::PushL(macImpl);

	//Create a NULL TCharacteristics pointer

	const TCharacteristics* charsPtr(NULL);

	//Retrieve the characteristics for the Mac implementation object

	TRAP_LOG(err, macImpl->GetCharacteristicsL(charsPtr));

	if(err == KErrNone)

		{

		//Static cast the characteristics to type TMacCharacteristics

		const TMacCharacteristics* macCharsPtr = static_cast<const TMacCharacteristics*>(charsPtr);

		const TCommonCharacteristics* commonChars = &macCharsPtr->iMacChar;

		//Create buffer for encrypted data

		TInt maxOutputLength = macCharsPtr->iCipherAlgorithmChar->iBlockSize/8;

		HBufC8* encrypted =	HBufC8::NewLC(maxOutputLength);

		TPtr8 encryptedPtr = encrypted->Des();

		INFO_PRINTF1(_L("Generating Mac ..."));

		//read from src file

		HBufC8* srcData = ReadInPlaintextL();

		CleanupStack::PushL(srcData);

		HBufC8* convertSrc = ConvertFromHexFormatToRawL(*srcData);

		CleanupStack::PushL(convertSrc);

		// This is just a simple performance measurement on generating 

		// the Mac

		TTime startTime;

		startTime.UniversalTime();

		//Perform the encryption operation

		encryptedPtr.Copy(macImpl->MacL(*convertSrc));

		TTime endTime;

		endTime.UniversalTime();

		TTimeIntervalMicroSeconds time = endTime.MicroSecondsFrom(startTime);

		//Check that expected data equals the encrypted data

		HBufC8* encryptedFileData = ReadInHexCiphertextL();

		CleanupStack::PushL(encryptedFileData);

		if(	!encryptedPtr.Compare(TPtrC8(*encryptedFileData)) && (commonChars->iAlgorithmUID == algorithm))

			{

			INFO_PRINTF2(_L("PASS : Generated Symmetric MAC after setup in %d micro sec. matches Expected MAC"), time.Int64());

			SetTestStepResult(EPass);

			}

		else if ((commonChars->iAlgorithmUID == algorithm))

			{

			INFO_PRINTF1(_L("FAIL : Generated Symmetric MAC and Expected MAC Mismatch"));	

			}

		else

			{

			INFO_PRINTF2(_L("FAIL : iAlgorithmUID Characteristic Mismatch 0x%x"), commonChars->iAlgorithmUID);

			}

		CleanupStack::PopAndDestroy(4, encrypted);	// encrypted, srcData, convertSrc, encryptedFileData

		}

	else

		{

		ERR_PRINTF2(_L("*** FAIL: Failed to get Symmetric Mac Object Characteristics- %d ***"), err);

		}

	CleanupStack::PopAndDestroy(4, keyParams);	// keyParams, convertKey, key, macImpl

	INFO_PRINTF2(_L("HEAP CELLS: %d"), User::CountAllocCells());

	}

void CSymmetricMacBasicDataStep::doOomTestL()

	{

	TVerdict verdict = EFail;

	TInt countAfter = 0;

	TInt countBefore = 0;

	for (TInt oomCount = 0; ; oomCount++)

		{

		INFO_PRINTF2(_L("==== Number of memory allocations %d ===="), oomCount);

		verdict = EFail;

		__UHEAP_RESET;

		__UHEAP_SETFAIL(RHeap::EDeterministic, oomCount);

		countBefore = User::CountAllocCells();

		TRAPD(error, doTestL());// ----> This is the actual test that runs under OOM conditions.

		countAfter = User::CountAllocCells();

		if(countBefore != countAfter)

			{

			INFO_PRINTF3(_L("Heap alloc count: %d final vs %d initial"), countAfter,countBefore);

			}  

		__UHEAP_RESET;

		if(error == KErrNone)  // First posibility: Test sequence was able to run to completion

			{

			verdict = EPass;

			INFO_PRINTF1(_L("OOM Test sequence completed"));

			if(countBefore != countAfter)

				{

				// Memory has to balance.

				verdict = EFail;

				INFO_PRINTF1(_L("Memory did not balance. Test outcome : Fail"));

				break;

				}  

			break;

			} 

		// Second possibility: Test sequence was NOT completed and error other than KErrNoMemory was returned. 

		else if (error != KErrNoMemory)  

			{

			if(countBefore != countAfter)

				{

				// For any error returned memory has to balance.

				verdict = EFail;

				INFO_PRINTF1(_L("Memory did not balance. Test outcome : Fail"));

				break;

				}  

			}

		// Third possibility: Test sequence was NOT completed and error KErrNoMemory was returned. 

		else   

			{

			if (countBefore != countAfter)

				{

				verdict = EFail;

				INFO_PRINTF2(_L("OOM Status %d"),error);

				INFO_PRINTF2(_L("MEMORY DID NOT BALANCE!!. OOM Failed at %d"), oomCount);

				break;  

				}   

			}  

		INFO_PRINTF2(_L("OOM Failed Point status %d"), error);

		}  // End of for loop.

	SetTestStepResult(verdict);

	return;	

	}

TVerdict CSymmetricMacBasicDataStep::doTestStepPostambleL()

	{

	return TestStepResult();

	}