/*

* Copyright (c) 2007-2010 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 "hmacbasichashofdatastep.h"

#include <cryptospi/cryptohashapi.h>

#include <cryptospi/keys.h>

#include <cryptospi/plugincharacteristics.h>

using namespace CryptoSpi;

CHmacBasicHashOfDataStep::~CHmacBasicHashOfDataStep()

	{

	}

CHmacBasicHashOfDataStep::CHmacBasicHashOfDataStep()

	{

	SetTestStepName(KHmacBasicHashOfDataStep);

	}

TVerdict CHmacBasicHashOfDataStep::doTestStepPreambleL()

	{

	SetTestStepResult(EPass);

	return TestStepResult();

	}

TVerdict CHmacBasicHashOfDataStep::doTestStepL()

	{

	if (TestStepResult()==EPass)

		{

		//Assume faliure, unless all is successful

		SetTestStepResult(EFail);

		INFO_PRINTF1(_L("*** Hmac - Basic Hash of Data ***"));

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

		TVariantPtrC algorithmUid;

		TVariantPtrC operationModeUid;

		TPtrC sourcePath;

		TPtrC expectedHash;

		TPtrC encryptKey;

		TVariantPtrC keyType;

		//Extract the Test Case ID parameter from the specified INI file

		if(!GetStringFromConfig(ConfigSection(),KConfigAlgorithmUid,algorithmUid) ||

			!GetStringFromConfig(ConfigSection(),KConfigOperationMode,operationModeUid) ||

			!GetStringFromConfig(ConfigSection(),KConfigSourcePath,sourcePath) ||

			!GetStringFromConfig(ConfigSection(),KConfigExHashHmacValue,expectedHash)||

			!GetStringFromConfig(ConfigSection(),KConfigEncryptKey,encryptKey) ||

			!GetStringFromConfig(ConfigSection(),KConfigEncryptKeyType,keyType))

			{

			ERR_PRINTF1(_L("** Error: Failed to Load Configuration Parameters **"));

			SetTestStepResult(EFail);

			}

		else

			{

			//Create a pointer for the Hash + Key (Hmac) Implementation Object

			CHash* hmacImpl = NULL;

			//Convert encryption key to an 8 Bit Descriptor

			HBufC8* keyStr = HBufC8::NewLC(encryptKey.Length());

			TPtr8 keyStrPtr = keyStr->Des();

			keyStrPtr.Copy(encryptKey);

			//Create an new CryptoParams object to encapsulate the key type and secret key string

			CCryptoParams* keyParams = CCryptoParams::NewL();

			CleanupStack::PushL(keyParams);

			keyParams->AddL(*keyStr,keyType);

			//Create Key Object

			TKeyProperty keyProperty;

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

			CleanupStack::PushL(key);

			//Retrieve a Hmac Factory Object			

			TRAPD(err,CHashFactory::CreateHashL(hmacImpl,

												algorithmUid,

												operationModeUid,

												key,

												NULL));											

			if(hmacImpl && (err == KErrNone))

				{

				//Push the Hmac Implementation Object onto the Cleanup Stack

				CleanupStack::PushL(hmacImpl);

				RFs fsSession;

				//Create a connection to the file server	

				err = fsSession.Connect();

				if(err != KErrNone)

					{

					ERR_PRINTF2(_L("*** Error: File Server Connection - %d ***"), err);

					SetTestStepResult(EFail);

					}	

				else

					{

					RFile sourceFile;

	    			CleanupClosePushL(sourceFile);

	    			//Open the specified source file		

	    			err = sourceFile.Open(fsSession,sourcePath, EFileRead);

	    			if(err != KErrNone)

						{

						ERR_PRINTF2(_L("*** Error: Opening Source File - %d ***"), err);

						SetTestStepResult(EFail);

						}

					else

						{

						TInt sourceLength = 0;

						User::LeaveIfError(sourceFile.Size(sourceLength));

						//Create a heap based descriptor to store the data

						HBufC8* sourceData = HBufC8::NewL(sourceLength);						

						CleanupStack::PushL(sourceData);

						TPtr8 sourcePtr = sourceData->Des();

						sourceFile.Read(sourcePtr);

						if(sourcePtr.Length() != sourceLength)

							{

							ERR_PRINTF1(_L("*** Error: Reading Source File ***"));

							SetTestStepResult(EFail);	

							}

						else

							{

							//Create a NULL TCharacteristics pointer

							const TCharacteristics* charsPtr(NULL);

							//Retrieve the characteristics for the hash implementation object

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

							//Static cast the characteristics to type THashCharacteristics

							const THashCharacteristics* hashCharsPtr = static_cast<const THashCharacteristics*>(charsPtr);

							//The hash output size is returned in Bits, divide by 8 to get the Byte size

							TInt hashSize = hashCharsPtr->iOutputSize/8;

							//Retrieve the final 8bit hash value and convert to 16bit												

							HBufC* hashData = HBufC::NewLC(hashSize);

							TPtr hashPtr = hashData->Des();

							hashPtr.Copy(hmacImpl->Hash(*sourceData));

							//Take the 16bit descriptor and convert the string to hexadecimal

							TVariantPtrC convertHash;

							convertHash.Set(hashPtr);

							HBufC* hmacResult = convertHash.HexStringLC();								

							INFO_PRINTF2(_L("*** Hashed Data: %S ***"),&*hmacResult);

							INFO_PRINTF2(_L("*** Expected Hash: %S ***"),&expectedHash);

							//If the returned hash value matches the expected hash, Pass the test	

							if(*hmacResult == expectedHash)

								{

								INFO_PRINTF1(_L("*** Hmac - Basic Hash of Data : PASS ***"));

								SetTestStepResult(EPass);	

								}

							else

								{

								ERR_PRINTF2(_L("*** FAIL: Hashed and Expected Value Mismatch  ***"), err);

								SetTestStepResult(EFail);	

								}

							CleanupStack::PopAndDestroy(hmacResult);

							CleanupStack::PopAndDestroy(hashData);						

							}

						CleanupStack::PopAndDestroy(sourceData);

						}

					//Cleanup the Source RFile	

					CleanupStack::PopAndDestroy();	

					}

				fsSession.Close();	

				CleanupStack::PopAndDestroy(hmacImpl);

				}

			else

				{

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

				SetTestStepResult(EFail);	

				}

			CleanupStack::PopAndDestroy(key);

			CleanupStack::PopAndDestroy(keyParams);

			CleanupStack::PopAndDestroy(keyStr);

			}

		}

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

	return TestStepResult();

	}

TVerdict CHmacBasicHashOfDataStep::doTestStepPostambleL()

	{

	return TestStepResult();

	}