/*

* Copyright (c) 2005-2009 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: 

* This file contains the implementation of the CPkcs12Parser class, to parse the PKCS#12 file.

*

*/

/**

 @file 

 @internalTechnology

*/

// System Include

#include <f32file.h>

//User Include 

#include "tpkcs12common.h"

using namespace PKCS12;

/**

Description:constructor

@internalTechnology:

@test

*/

CPkcs12Parser::CPkcs12Parser()

	{

	}

/**

Description:destructor

@internalTechnology:

@test

*/

CPkcs12Parser::~CPkcs12Parser()

	{

	delete iIntegrityPassword;	

	delete iRawData;	

	delete iPkcs12Header;

	iArraySafecontentBag.ResetAndDestroy();

	iArrayBagData.ResetAndDestroy();

	}

/**

Description:Function is intended to creates a new CPKCS12Parser object.	 

@return:CPKCS12Parser* : parser object to parse the PKCS12 file

@internalTechnology

@test

*/

CPkcs12Parser* CPkcs12Parser::NewL()

	{	

	CPkcs12Parser* parser = NewLC();

	CleanupStack::Pop(parser);	

	return parser;

	}

/**

Description:Function is intended to creates a new CPKCS12Parser object.	 

@return:CPKCS12Parser* : parser object to parse the PKCS12 file

@test

*/

CPkcs12Parser* CPkcs12Parser::NewLC()

	{	

	CPkcs12Parser* parser = new (ELeave) CPkcs12Parser();

	CleanupStack::PushL(parser);	

	return parser;

	}

/**

Description:Function is intended to set the integrity password 

@param	aIntegrityPassword, contains the integrity password

@internalTechnology

@test

*/

void CPkcs12Parser::SetIntegrityPasswordL(const TDesC& aIntegrityPassword)

	{

	iIntegrityPassword = aIntegrityPassword.AllocL();

	}

/**

Description:Function is intended to set the privacy password(s) 

@param aPrivacyPassword, contains  the privacy passwords.The ownership is not transferred

@internalTechnology

@test

*/

void CPkcs12Parser::SetPrivacyPassword(RPointerArray<TDesC>& aPrivacyPassword)

	{

	iPrivacyPassword = 	&aPrivacyPassword;

	}

/**

Description:Function is intended to set the test data. 

			It opens the data file and stores it in the buffer.

@param aDatapath, contains the path of the PKCS12 file

@internalTechnology

@test

*/

void CPkcs12Parser::SetDataL(const TDesC& aDatapath)

	{ 	

	if(iRawData)

		{

		delete iRawData ;

		iRawData  = NULL;

		}

	RFs fs;

	//connects the file server

	User::LeaveIfError (fs.Connect());

	//opens the data file

	CleanupClosePushL(fs);

	RFile file;

	User::LeaveIfError(file.Open(fs, aDatapath, EFileRead)) ; 

	CleanupClosePushL(file);

	TInt fileSize = 0;

	User::LeaveIfError(file.Size(fileSize));	

	iRawData = HBufC8::NewL(fileSize);

	TPtr8 rawData(iRawData->Des());

	rawData.SetLength(fileSize);	

	file.Read (rawData);

	CleanupStack::PopAndDestroy(&file);

	//closes the file session

	CleanupStack::PopAndDestroy(&fs);

	}

/**

Description:Function is intended to parse the PKCS#12 data

@leave:- if the number of contentinfos and number of privacy passwords does not match.	

@internalTechnology

@test

*/

void CPkcs12Parser::ParseL()

	{

	//creates the CDecPkcs12 object		

	CDecPkcs12* decPkcs12 = NULL;

	TRAPD(error, decPkcs12	= CDecPkcs12::NewL(*iRawData));

	if(error == KErrNone)

		CleanupStack::PushL(decPkcs12);	

	//Creates a CPfxHeader object

	iPkcs12Header = CPfxHeader::NewL(*decPkcs12 , error);	

	if(error != KErrNone)

		{

		return ;	

		}

	const CDecPkcs12MacData* macData = decPkcs12->MacData();

	TRAPD(err,macData->VerifyIntegrityL(iIntegrityPassword->Des()));

	if(err)

		{

		iPkcs12Header->SetPkcs12ActualError(err);

		CleanupStack::PopAndDestroy(decPkcs12);

		return;

		}

	//get the ContentInfo collection

	const RPointerArray<CPKCS7ContentInfo>& contentInfos = decPkcs12->AuthenticatedSafeContents();	

	TInt contentInfoCount = contentInfos.Count();

	//put the content info count in the Header

	iPkcs12Header->SetContentInfoCount(contentInfoCount) ;

	// start iterate through the contentinfos

	for(TInt index = 0 ; index < contentInfoCount; index++)

		{

		TInt contentType = contentInfos[index]->ContentType() ; 

		TPtrC8 contentData = contentInfos[index]->ContentData();

		if( contentData == KNullDesC8()) 

			{

			iPkcs12Header->SetPkcs12ActualError(0);

			continue;

			}

		CDecPkcs12SafeContents* pkcs12SafeContents = NULL;			

		switch(contentType)

			{

			case CPKCS7ContentInfo::EContentTypeData:

				{

				TRAPD(error1,pkcs12SafeContents = CDecPkcs12SafeContents::NewL(*contentInfos[index]));	

				if(error1)

					{

					iPkcs12Header->SetPkcs12ActualError(error1);

					CSafeBagData* bagData = NULL; 

					bagData = CreateBagDataL(index,contentType);

					iArrayBagData.AppendL(bagData) ;

					CleanupStack::PopAndDestroy(decPkcs12);

					return;

					}	

				CleanupStack::PushL(pkcs12SafeContents);			

				break;

				}

			case CPKCS7ContentInfo::EContentTypeEncryptedData:

				{

				if(contentInfoCount != iPrivacyPassword->Count())	

					{

					User::Leave(KErrArgument);

					}

				TRAPD(error2,pkcs12SafeContents = CDecPkcs12SafeContents::NewL(*contentInfos[index],

																	*((*iPrivacyPassword)[index]) ) );

				if(error2)

					{

					iPkcs12Header->SetPkcs12ActualError(error2);

					CSafeBagData* bagData = NULL; 

					bagData = CreateBagDataL(index,contentType);

					iArrayBagData.AppendL(bagData) ;

					CleanupStack::PopAndDestroy(decPkcs12);

					return;

					}							

				CleanupStack::PushL(pkcs12SafeContents);	

				break;							

				}

			case CPKCS7ContentInfo::EContentTypeEnvelopedData:

				{

				//creates a Bagdata object in the heap to store the content type. 

				CSafeBagData* bagData = CreateBagDataL(index+1 ,contentType);

				iArrayBagData.AppendL(bagData) ;

				//continue in the loop

				continue;

				}

			default:

				{	

				//continue in the loop

				continue;

				}

			}

		// Get the safebags count.

		const RPointerArray<CDecPkcs12SafeBag>& safeBags = pkcs12SafeContents->SafeContentsBags();

		TInt safeBagCount = safeBags.Count();

		//start parsing the bags

		for (TInt bagsCount=0; bagsCount < safeBagCount; bagsCount++)

			{	

			TRAPD(error3,ParseSafeBagL(index+1, contentType , *safeBags[bagsCount]));

			if(error3 != KErrNone)

				{

				iPkcs12Header->SetPkcs12ActualError(error3);

				CSafeBagData* bagData = NULL; 

				bagData = CreateBagDataL(index,contentType);

				iArrayBagData.AppendL(bagData) ;

				CleanupStack::PopAndDestroy(2,decPkcs12);

				return;

				}	

			}	

			CleanupStack::PopAndDestroy(pkcs12SafeContents);

		}		

	CleanupStack::PopAndDestroy(decPkcs12);	

	}

/**

Description: Creates a CSafeBagData to store the safebag details

@param:aContentInfo, the contentinfo number of the safe bag 

@param:aContentType, the content type of the safe contents.

@return:a pointer to CSafeBagData, which is used to store the safebag details 

@internalTechnology:

@test:

*/

CSafeBagData* CPkcs12Parser::CreateBagDataL(TInt aContentInfo, TInt aContentType)

	{

	CSafeBagData* bagData = CSafeBagData::NewL();	

	if ( iPkcs12Header->Pkcs12ActualError() == KErrNone )

		{

		//set the contentinfo # and content type in CSafeBagData

		bagData->SetContentInfoNumber(aContentInfo);	

		bagData->SetBagNumber(++iSafebagNumber );	

		// set the content type in CSafeBagData		

		bagData->SetContentInfoType(aContentType);

		}

	return bagData ;

	}

/**

Description:To parse the safebags

@param:aContentInfoIndex	content info number

@param:aContentType	contentinfo type

@param:aSafeBag	reference to the CDecPkcs12SafeBag 

@internalTechnology:

@test:

*/

void CPkcs12Parser::ParseSafeBagL(TInt aContentInfo,TInt aContentType,CDecPkcs12SafeBag& aSafeBag)

	{

	//get the bag type 

	CDecPkcs12SafeBag::TBagId bagType = aSafeBag.BagID();

	switch(bagType)

		{

		case CDecPkcs12SafeBag::ESafeContentsBag:

			{

			CDecPkcs12SafeContentsBag* safeContentsBag = static_cast<CDecPkcs12SafeContentsBag *>(&aSafeBag);

			// increment the count

			iPkcs12Header->IncrementSafecontentBagCount();

			// parsing code to parse SafeContentsBag		

			ParseSafeContentBagL(*safeContentsBag, aContentInfo ,aContentType );

			break;

			}

		case CDecPkcs12SafeBag::EKeyBag:

			{

			CDecPkcs12KeyBag* keyBag = static_cast<CDecPkcs12KeyBag *>(&aSafeBag);					

			//create the CSafeBagData object in heap to store the bag details

			CSafeBagData* bagData = CreateBagDataL(aContentInfo,aContentType);

			CleanupStack::PushL(bagData);			

			ParseKeyBag(*keyBag , *bagData);

			//get the safeBag attributes

			BagAttributesL(*keyBag ,*bagData) ;	

			iArrayBagData.AppendL(bagData) ;

			CleanupStack::Pop(bagData);					

			break;

			}

		case CDecPkcs12SafeBag::EShroudedKeyBag:

			{

			CDecPkcs12ShroudedKeyBag* shroudedkeyBag = static_cast<CDecPkcs12ShroudedKeyBag *>(&aSafeBag);

			//create the CSafeBagData object in heap to store the bag details

			CSafeBagData* bagData = CreateBagDataL(aContentInfo,aContentType );

			CleanupStack::PushL(bagData);			

			ParseShroudedKeyBagL(*shroudedkeyBag , *bagData ,aContentInfo );		

			//get the safeBag attributes

			BagAttributesL(*shroudedkeyBag ,*bagData) ;	

			iArrayBagData.AppendL(bagData) ;	

			CleanupStack::Pop(bagData);			

			break;

			}

		case CDecPkcs12SafeBag::ECertBag:

			{

			CDecPkcs12CertBag* certBag = static_cast<CDecPkcs12CertBag *>(&aSafeBag);					

			//create the CSafeBagData object in heap to store the bag details

			CSafeBagData* bagData = CreateBagDataL(aContentInfo,aContentType);

			CleanupStack::PushL(bagData);		

			ParseCertBag(*certBag , *bagData);

			// Get the bag Attributes

			BagAttributesL(*certBag , *bagData) ;	

			iArrayBagData.AppendL(bagData) ;

			CleanupStack::Pop(bagData);			

			break;

			}

		case CDecPkcs12SafeBag::ECrlBag:

			{

			//create the CSafeBagData object in heap to store the bag details

			CSafeBagData* bagData = CreateBagDataL(aContentInfo,aContentType);;

			CleanupStack::PushL(bagData);				

			//set the bagId in CSafeBagData

			bagData->SetBagType(bagType) ; 

			//increment the count - unsupported

			iPkcs12Header->IncrementCrlBagCount();

			iArrayBagData.AppendL(bagData) ;

			CleanupStack::Pop(bagData);				

			break;

			}

		case CDecPkcs12SafeBag::ESecretBag:

			{

			//create the CSafeBagData object in heap to store the bag details

			CSafeBagData* bagData = CreateBagDataL(aContentInfo,aContentType );	

			CleanupStack::PushL(bagData);

			//set the iBagId in CSafeBagData

			bagData->SetBagType(bagType) ; 

			//increment the count - unsupported

			iPkcs12Header->IncrementSecretBagCount();

			iArrayBagData.AppendL(bagData) ;		

			CleanupStack::Pop(bagData);	

			break;

			}

		default:

			{

			}

		}

	}

/**

Description:Function is intended to get the attributes of Safebag

@param-aSafeBag: reference to the CDecPkcs12SafeBag.

@param-abagData: reference to the CSafeBagData

@internalTechnology:

@test

*/

void CPkcs12Parser::BagAttributesL(const CDecPkcs12SafeBag& aSafeBag,CSafeBagData& aBagData )

	{

	const RPointerArray<CDecPkcs12Attribute>& safeBagAttributes = aSafeBag.BagAttributes();

	TInt attributeCount = safeBagAttributes.Count() ;

	for (TInt index = 0;index < attributeCount; index++ )

		{						

		//get the attribute object pointer

		CDecPkcs12Attribute* attribute = safeBagAttributes[index];

		//create the CSafeBagAttribute object in heap.	

		CSafeBagAttribute* bagAttr = CSafeBagAttribute::NewL(*safeBagAttributes[index]);

		CleanupStack::PushL(bagAttr);

		//get the attribute values

		const RPointerArray<TDesC8>& attrValues = attribute->AttributeValue();			

		//append the pointer in the iAttributeIDs array

		aBagData.iAttributeIDs.AppendL(bagAttr) ;

		CleanupStack::Pop(bagAttr);	

		//store the attribute values

		TInt numberOfAttributes = bagAttr->AttributeValueCount();

		for(TInt attrvalCnt = 0 ; attrvalCnt < numberOfAttributes ; attrvalCnt++)

			{

			//get the atribute value and store the it address in the aBagData.iAttributeValues array				

			HBufC8* ptr =  attrValues[attrvalCnt]->AllocLC();								

			aBagData.iAttributeValues.AppendL(ptr);

			CleanupStack::Pop(ptr);

			}			

		}	

	}

/**

Description:Function is intended to parse the  keybag

@param-aKeyBag: reference to the keybag

@param-abagData: reference to the CSafeBagData

@internalTechnology:

@test:

*/

void CPkcs12Parser::ParseKeyBag(CDecPkcs12KeyBag& aKeyBag , CSafeBagData& aBagData)

	{

	//set the bagID

	aBagData.SetBagType( CDecPkcs12SafeBag::EKeyBag ); 				

	// Get the Algorithm(RSA key or DSA key) ID 

	CDecPKCS8Data* pkcs8Data = aKeyBag.PrivateKeyInfoL();				

	aBagData.SetPrivateKeyInfoVersion(pkcs8Data->Version() );

	TAlgorithmId algorithmId = pkcs8Data->Algorithm();

	// Set the Algorithm Id in CSafeBagData

	aBagData.SetKeyType( algorithmId );

	//set the bag value in CSafeBagData

	aBagData.SetBagValue( aKeyBag.BagValue());				

	// increment the count

	iPkcs12Header->IncrementKeyBagCount();

	delete pkcs8Data;

	}

/**

Description:Function is intended to parse the  ShroudedKeyBag

@param-aShroudedkeyBag: pointer to the CDecPkcs12ShroudedKeyBag

@param-abagData: reference to the CSafeBagData

@param- aPassIndex: the index of the array from where the privacy password is to be taken

@internalTechnology:

@test

*/

void CPkcs12Parser::ParseShroudedKeyBagL(CDecPkcs12ShroudedKeyBag& aShroudedkeyBag , CSafeBagData& aBagData , TInt aPassIndex)

	{

	//set the bag Id in CSafeBagData

	aBagData.SetBagType( CDecPkcs12SafeBag::EShroudedKeyBag ); 				

	// Get the Algorithm(RSA key or DSA key) ID 

	CDecPKCS8Data* pkcs8Data = aShroudedkeyBag.PrivateKeyInfoL(*(*iPrivacyPassword)[aPassIndex-1]);

	if(pkcs8Data)

		{

		aBagData.SetPrivateKeyInfoVersion(pkcs8Data->Version() );	

		TAlgorithmId algorithm  = pkcs8Data->Algorithm();	

		// Set the Algorithm Id in CSafeBagData

		aBagData.SetKeyType(algorithm);

		CASN1EncSequence* seq = NULL ;

		switch(algorithm)

			{

			case ERSA:

				{	

				CPKCS8KeyPairRSA* keypair = static_cast<CPKCS8KeyPairRSA*>(pkcs8Data->KeyPairData());

				const CRSAPrivateKey& priv = keypair->PrivateKey();

				const CRSAPublicKey& publicKey = keypair->PublicKey(); 

				TRSAPrivateKeyType keytype = priv.PrivateKeyType();

				switch(keytype)

					{

					case EStandardCRT:

						{

						const CRSAPrivateKeyCRT* privateKeyCRT = static_cast<const CRSAPrivateKeyCRT*>(&priv);

						seq =  TASN1EncPKCS8::EncodeL(*privateKeyCRT, publicKey,pkcs8Data->PKCS8Attributes());	

						break;

						}					

					case EStandard:		

						{

						User::Leave(KErrNotSupported);

						}

					default:

						{

						User::Leave(KErrNotSupported);	

						}

					}

				break;

				}		

			case EDSA:

				{

				CPKCS8KeyPairDSA* keypair = static_cast<CPKCS8KeyPairDSA*>(pkcs8Data->KeyPairData());

				const CDSAPrivateKey& priv = keypair->PrivateKey();

				seq =  TASN1EncPKCS8::EncodeL(priv , pkcs8Data->PKCS8Attributes());

				break;

				}			

			default:

				User::Leave(KErrNotSupported);

			}

		HBufC8* bufSeq = HBufC8::NewMaxLC(seq->LengthDER());

		TPtr8 temp(bufSeq->Des());

		TUint pos = 0;

		seq->WriteDERL(temp ,pos);

		aBagData.SetEncodedShroudedKey(temp);

		CleanupStack::PopAndDestroy();

		delete pkcs8Data;

		}

		//set the bag value in CSafeBagData

		aBagData.SetBagValue(aShroudedkeyBag.BagValue()) ;				

		// increment the count 

		iPkcs12Header->IncrementShroudedKeyBagCount();											

	}

/**

Description:Function is intended to parse the  certbag

@param-aCertBag: pointer to the CDecPkcs12CertBag

@param-abagData: reference to the CSafeBagData

@internalTechnology:

@test

*/

void CPkcs12Parser::ParseCertBag(CDecPkcs12CertBag& aCertBag , CSafeBagData& aBagData)