/*

 * Copyright (c) 2004-2009 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: 

 *

 */

 #include "tactionsetwritepfs.h"

 #include "t_input.h"

 #include <cryptostrength.h>

 #include <pbedata.h>

 #include <f32file.h>

 #include <s32file.h>

 #include <stdlib.h>

 #include <s32mem.h>

 #include <s32std.h>

 _LIT8(KWritePFSStart, "<writepfs>");

 _LIT8(KWritePFSEnd, "</writepfs>");

 _LIT8(KInputStart, "<input>");

 _LIT8(KInputEnd, "</input>");

 _LIT8(KPasswdStart, "<passwd>");

 _LIT8(KPasswdEnd, "</passwd>");

 _LIT16(KWeakFileName, "\\tpbe\\weak.dat");

 _LIT16(KStrongFileName, "\\tpbe\\strong.dat");

 CTestAction* CActionSetWritePFS::NewL(RFs& aFs,

 									   CConsoleBase& aConsole,

 									   Output& aOut, 

 									   const TTestActionSpec& aTestActionSpec)

 	{

 	CTestAction* self = CActionSetWritePFS::NewLC(aFs, aConsole,

 		aOut, aTestActionSpec);

 	CleanupStack::Pop();

 	return self;

 	}

 CTestAction* CActionSetWritePFS::NewLC(RFs& aFs,

 										CConsoleBase& aConsole,

 										Output& aOut, 

 										const TTestActionSpec& aTestActionSpec)

 	{

 	CActionSetWritePFS* self = new(ELeave) CActionSetWritePFS(aFs, aConsole, aOut);

 	CleanupStack::PushL(self);

 	self->ConstructL(aTestActionSpec);

 	return self;

 	}

 CActionSetWritePFS::~CActionSetWritePFS()

 	{

 	delete iBody;

 	}

 CActionSetWritePFS::CActionSetWritePFS(RFs& aFs, 

 								 CConsoleBase& aConsole,

 								 Output& aOut)

 : CTestAction(aConsole, aOut), iFs(aFs)

 	{

 	}

 void CActionSetWritePFS::ConstructL(const TTestActionSpec& aTestActionSpec)

 	{

 	CTestAction::ConstructL(aTestActionSpec);

 	iBody = HBufC8::NewL(aTestActionSpec.iActionBody.Length());

 	iBody->Des().Copy(aTestActionSpec.iActionBody);

 	}

 void CActionSetWritePFS::DoPerformPrerequisite(TRequestStatus& aStatus)

 	{

 	TRequestStatus* status = &aStatus;

 	TInt err = KErrNone;

 	TInt pos = 0;

 	TPtrC8 encryptElement = Input::ParseElement(*iBody, KWritePFSStart,

 		KWritePFSEnd, pos, err);

 	TPtrC8 passwdTemp = Input::ParseElement(encryptElement, KPasswdStart, 

 		KPasswdEnd, pos=0, err);

 	iPasswd = HBufC::NewL(passwdTemp.Length());

 	TPtr16 passwdTemp3( iPasswd->Des());

 	passwdTemp3.Copy(passwdTemp);

 	TPtrC8 inputTemp = Input::ParseElement(encryptElement, KInputStart, 

 		KInputEnd, pos=0, err);

 	iInput = HBufC8::NewL(inputTemp.Length());

 	*iInput = inputTemp;

 	User::RequestComplete(status, KErrNone);

 	iActionState = CTestAction::EAction;

 	}

 void CActionSetWritePFS::DoPerformPostrequisite(TRequestStatus& aStatus)

 	{

 	TRequestStatus* status = &aStatus;

 	delete iPasswd;

 	delete iInput;

 	iFinished = ETrue;

 	User::RequestComplete(status, KErrNone);

 	}

 void CActionSetWritePFS::DoReportAction(void)

 	{

 	}

 void CActionSetWritePFS::DoCheckResult(TInt)

 	{

 	}

 void CActionSetWritePFS::PerformAction(TRequestStatus& aStatus)

 	{

 	__UHEAP_MARK;

 	TRequestStatus* status = &aStatus;

 	iResult = EFalse;

 	CPBEncryptSet* set = CPBEncryptSet::NewL(*iPasswd);

 	CleanupStack::PushL(set);

 	CPBEncryptor* encryptor = set->NewEncryptLC();

 	HBufC8* ciphertextTemp = HBufC8::NewLC(encryptor->MaxFinalOutputLength(iInput->Length())); 

 	TPtr8 ciphertext = ciphertextTemp->Des();	

 	encryptor->ProcessFinalL(*iInput, ciphertext);

 	TInt cipherTextLength = set->MaxCiphertextLength(iInput->Length());

 	TInt plainTextLength = set->MaxPlaintextLength(cipherTextLength);

 	if (plainTextLength > cipherTextLength)

 		{

 		iResult = EFalse;

 		}

 	//Change the password by appending the letter 'a' to it

 	HBufC* newPasswordTemp = HBufC::NewMaxLC(iPasswd->Length()+1);

 	TPtr newPassword = newPasswordTemp->Des();

 	newPassword.Copy(*iPasswd);

 	newPassword.Append('a');

 	set->ChangePasswordL(newPassword);

 	TDriveUnit sysDrive (RFs::GetSystemDrive());

 	TBuf<128> pfsFileName (sysDrive.Name());

 	if (TCrypto::Strength() == TCrypto::EStrong)

 		pfsFileName.Append(KStrongFileName);

 	else

 		pfsFileName.Append(KWeakFileName);

 	RStoreWriteStream write;

 	CFileStore *store = CPermanentFileStore::ReplaceLC(iFs, pfsFileName, EFileRead | EFileWrite);

 	store->SetTypeL(store->Layout());

 	//write the encrypted master key to a new stream

 	write.CreateLC(*store);

 	write << set->EncryptedMasterKey();

 	write.CommitL();

 	CleanupStack::PopAndDestroy(); //CreateLC()

 	//write the encryption data to a new stream

 	write.CreateLC(*store);

 	set->EncryptionData().ExternalizeL(write);

 	write.CommitL();

 	CleanupStack::PopAndDestroy(); //CreateLC()

 	//write the cyphertext to a new stream

 	write.CreateLC(*store);

 	write << ciphertext;

 	write.CommitL();

 	CleanupStack::PopAndDestroy(); //CreateLC()

 	store->Commit();

 	// Finished writing the PFS

 	iResult = ETrue;

 	CleanupStack::PopAndDestroy(store);

 	CleanupStack::PopAndDestroy(newPasswordTemp);

 	CleanupStack::PopAndDestroy(ciphertextTemp);

 	CleanupStack::PopAndDestroy(encryptor);

 	CleanupStack::PopAndDestroy(set);

 	User::RequestComplete(status, KErrNone);

 	iActionState = CTestAction::EPostrequisite;

 	__UHEAP_MARKEND;

 	}

 void CActionSetWritePFS::Hex(HBufC8& aString)

     {

     TPtr8 ptr=aString.Des();

     if (aString.Length()%2)

         {

         ptr.SetLength(0);

         return;

         }

     TInt i;

     for (i=0;i<aString.Length();i+=2)

         {

         TUint8 tmp;

         tmp=(TUint8)(aString[i]-(aString[i]>'9'?('A'-10):'0'));

         tmp*=16;

         tmp|=(TUint8)(aString[i+1]-(aString[i+1]>'9'?('A'-10):'0'));

         ptr[i/2]=tmp;

         }

     ptr.SetLength(aString.Length()/2);

     }