/*

* 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: 

* Definition of the Swi::Sis::CController

*

*/

/**

 @file siscontroller.cpp

*/

#include "siscontroller.h"

#include "sisinfo.h"

#include "sissupportedlanguages.h"

#include "sissupportedoptions.h"

#include "sisproperties.h"

#include "sislogo.h"

#include "sisinstallblock.h"

#include "sisproperties.h"

#include "sisprerequisites.h"

#include "swi/sistruststatus.h"

#include "certchainconstraints.h"

#include "sisptrprovider.h"

#include "log.h"

using namespace Swi::Sis;

EXPORT_C /*static*/ CController* CController::NewLC(MSisDataProvider& aDataProvider, TInt64& aBytesRead, TReadTypeBehaviour aTypeReadBehaviour)

	{

	CController* self = new(ELeave) CController();

	CleanupStack::PushL(self);

	self->ConstructL(aDataProvider, aBytesRead, aTypeReadBehaviour);

	return self;

	}

EXPORT_C /*static*/ CController* CController::NewL(MSisDataProvider& aDataProvider, TInt64& aBytesRead, TReadTypeBehaviour aTypeReadBehaviour)

	{

	CController* self = NewLC(aDataProvider, aBytesRead, aTypeReadBehaviour);

	CleanupStack::Pop(self);

	return self;

	}

EXPORT_C /*static*/ CController* CController::NewLC(MSisDataProvider& aDataProvider, TReadTypeBehaviour aTypeReadBehaviour)

	{

	CController* self = new(ELeave) CController();

	CleanupStack::PushL(self);

	TInt64 bytesRead=0;

	self->ConstructL(aDataProvider, bytesRead, aTypeReadBehaviour);

	return self;

	}

EXPORT_C /*static*/ CController* CController::NewL(MSisDataProvider& aDataProvider, TReadTypeBehaviour aTypeReadBehaviour)

	{

	CController* self = NewLC(aDataProvider, aTypeReadBehaviour);

	CleanupStack::Pop(self);

	return self;

	}

CController::CController() : iTrust(ESisPackageUnsignedOrSelfSigned)

	{

	}

EXPORT_C CController* CController::NewLC(TPtrProvider& aDataProvider, TReadTypeBehaviour aTypeReadBehaviour)

	{

	CController* self = new(ELeave) CController();

	CleanupStack::PushL(self);

	TInt64 bytesRead(0);

	self->ConstructL(aDataProvider, bytesRead, aTypeReadBehaviour);

	return self;

	}

EXPORT_C CController* CController::NewL(TPtrProvider& aDataProvider, TReadTypeBehaviour aTypeReadBehaviour)

	{

	CController* self = NewLC(aDataProvider, aTypeReadBehaviour);

	CleanupStack::Pop(self);

	return self;

	}

EXPORT_C CController* CController::NewLC(TPtrProvider& aDataProvider, TInt64& aBytesRead, TReadTypeBehaviour aTypeReadBehaviour)

	{

	CController* self = new(ELeave) CController();

	CleanupStack::PushL(self);

	self->ConstructL(aDataProvider, aBytesRead, aTypeReadBehaviour);

	return self;

	}

EXPORT_C CController* CController::NewL(TPtrProvider& aDataProvider, TInt64& aBytesRead, TReadTypeBehaviour aTypeReadBehaviour)

	{

	CController* self = NewLC(aDataProvider, aBytesRead, aTypeReadBehaviour);

	CleanupStack::Pop(self);

	return self;

	}

EXPORT_C CController::~CController()

	{

	delete iInfo;

	delete iInstallBlock;

	delete iLanguages;

	delete iSupportedOptions;

	delete iProperties;

	delete iLogo;

	delete iPrerequisites;

	delete iDataIndex;

	delete iTrustStatus;

	}

void CController::ConstructL(MSisDataProvider& aDataProvider, TInt64& aBytesRead, TReadTypeBehaviour aTypeReadBehaviour)

	{

	iDataOffset=aBytesRead;

	CField::ConstructL(aDataProvider, EFieldTypeController, aBytesRead, aTypeReadBehaviour);

 	iInfo=CInfo::NewL(aDataProvider, aBytesRead);

	iSupportedOptions=CSupportedOptions::NewL(aDataProvider, aBytesRead);

	iLanguages=CSupportedLanguages::NewL(aDataProvider, aBytesRead);

	iPrerequisites=CPrerequisites::NewL(aDataProvider, aBytesRead);

	iProperties=CProperties::NewL(aDataProvider, aBytesRead);

	TFieldType fieldType;

	CField::ReadEnumL<TFieldType,TUint32>(aDataProvider, fieldType, aBytesRead);

	if (fieldType == EFieldTypeLogo)

		{

		// Logo present

		iLogo=CLogo::NewL(aDataProvider, aBytesRead, EAssumeType);

		iInstallBlock=CInstallBlock::NewL(aDataProvider, aBytesRead);

		}

	else if (fieldType == EFieldTypeInstallBlock)

		{

		// No logo present

		iInstallBlock=CInstallBlock::NewL(aDataProvider, aBytesRead, EAssumeType);

		}

	else

		{

		User::Leave(KErrSISUnexpectedFieldType);

		}

	ReadMemberCollectionL(aDataProvider, iSignatureCertificateChains, EFieldTypeSignatureCertificateChain, EFieldTypeDataIndex, aBytesRead);

	iDataIndex=CDataIndex::NewL(aDataProvider, aBytesRead, EAssumeType);

	CField::SkipUnknownFieldsL(aDataProvider, aBytesRead - iDataOffset, aBytesRead, aTypeReadBehaviour);

	CField::EnsureAlignedL(aDataProvider, aBytesRead - iDataOffset, aBytesRead, aTypeReadBehaviour);

	iTrustStatus = new (ELeave)Swi::TSisTrustStatus();

	// Create unconstrained cert chain constraints object; this may be replaced.

	iCertChainConstraints = CCertChainConstraints::NewL();

	iRemoveWithLastDependent = 0;

	#ifdef SYMBIAN_UNIVERSAL_INSTALL_FRAMEWORK

	iUserGrantableCapabilities.SetEmpty();

	#endif

	}

void CController::ConstructL(TPtrProvider& aDataProvider, TInt64& aBytesRead, TReadTypeBehaviour aTypeReadBehaviour)

	{

	iDataOffset=aBytesRead;

	CField::ConstructL(aDataProvider, EFieldTypeController, aBytesRead, aTypeReadBehaviour);

 	iInfo=CInfo::NewL(aDataProvider, aBytesRead);

	iSupportedOptions=CSupportedOptions::NewL(aDataProvider, aBytesRead);

	iLanguages=CSupportedLanguages::NewL(aDataProvider, aBytesRead);

	iPrerequisites=CPrerequisites::NewL(aDataProvider, aBytesRead);

	iProperties=CProperties::NewL(aDataProvider, aBytesRead);

	TFieldType fieldType;

	CField::ReadEnumL<TFieldType,TUint32>(aDataProvider, fieldType, aBytesRead);

	if (fieldType == EFieldTypeLogo)

		{

		// Logo present

		iLogo=CLogo::NewL(aDataProvider, aBytesRead, EAssumeType);

		iInstallBlock=CInstallBlock::NewL(aDataProvider, aBytesRead);

		}

	else if (fieldType == EFieldTypeInstallBlock)

		{

		// No logo present

		iInstallBlock=CInstallBlock::NewL(aDataProvider, aBytesRead, EAssumeType);

		}

	else

		{

		User::Leave(KErrSISUnexpectedFieldType);

		}

	ReadMemberCollectionL(aDataProvider, iSignatureCertificateChains, EFieldTypeSignatureCertificateChain, EFieldTypeDataIndex, aBytesRead);

	iDataIndex=CDataIndex::NewL(aDataProvider, aBytesRead, EAssumeType);

	CField::SkipUnknownFieldsL(aDataProvider, aBytesRead - iDataOffset, aBytesRead, aTypeReadBehaviour);

	CField::EnsureAlignedL(aDataProvider, aBytesRead - iDataOffset, aBytesRead, aTypeReadBehaviour);

	iTrustStatus = new (ELeave)Swi::TSisTrustStatus();

	// Create unconstrained cert chain constraints object; this may be replaced.

	iCertChainConstraints = CCertChainConstraints::NewL();

	iRemoveWithLastDependent = 0;

	#ifdef SYMBIAN_UNIVERSAL_INSTALL_FRAMEWORK

	iUserGrantableCapabilities.SetEmpty();

	#endif

	}	

EXPORT_C void CController::AddChainIndex(TInt aIndex) const

    {

	iCertChainIndices.Append(aIndex);

    }

EXPORT_C void CController::ClearCertChainIndices() const

    {

	iCertChainIndices.Reset();

    }

EXPORT_C void CController::SetCertChainConstraints(CCertChainConstraints* aConstraints)

 	{

 	// Delete existing cert chain constraints object.

 	delete iCertChainConstraints;

 	iCertChainConstraints=aConstraints;

 	}

EXPORT_C TInt CController::RemoveWithLastDependent() const

	{

	return iRemoveWithLastDependent;

	}

EXPORT_C void CController::SetRemoveWithLastDependent()

	{

	iRemoveWithLastDependent = 1;

	}

EXPORT_C CMessageDigest* CController::GenerateControllerHashLC(const TDesC8& aController)

	{

	TInt64 infoLength = iInfo->Length() + iInfo->HeaderSize() + iInfo->PaddingSize();

	TInt64 installBLength = iInstallBlock->Length() + iInstallBlock->HeaderSize() + iInstallBlock->PaddingSize();	

	TInt64 supportLLength = iLanguages->Length() + iLanguages->HeaderSize() + iLanguages->PaddingSize();

	TInt64 supportOLength = iSupportedOptions->Length() + iSupportedOptions->HeaderSize() + iSupportedOptions->PaddingSize();

	TInt64 propertiesLength = iProperties->Length() + iProperties->HeaderSize() + iProperties->PaddingSize();

	TInt64 prerequisitesLength = iPrerequisites->Length() + iPrerequisites->HeaderSize() + iPrerequisites->PaddingSize();

	TInt64 logoLength = 0;

	if (iLogo)

		{

		logoLength = iLogo->Length() + iLogo->HeaderSize() + iLogo->PaddingSize();

		}

   	TInt64 controllerLength = 0;

	controllerLength = infoLength + installBLength + supportLLength + supportOLength + propertiesLength + prerequisitesLength + logoLength;

	// Length octets are either 4 or 8 bytes but since controllers are loaded into

	// bytes should ALWAYS be sufficient.

	TInt offset = 4;

	// Should really modify the length and not the offset skipping the length octets. 

	// This makes the controller hash independent of the signature chains.

	//

	// Unfortunately, this is fixed and changing it potentially breaks compatibility

	// E.g. If the firmware is upgraded without reformatting the system drive then SWI 

	// may think that an application on removable media has not been installed.

	controllerLength += (Length() > 0x80000000 ? 8 : 4);

	DEBUG_PRINTF4(_L8("GenerateControllerHashLC aController.Length()=%d, offset=%d, controllerLength=%d"), 

		aController.Length(), offset, controllerLength);

	if (offset + controllerLength >= aController.Length()) 

		{

		// Mid will panic if the lengths are outside the buffer.

		User::Leave(KErrCorrupt);

		}

	TPtrC8 ptr;

	ptr.Set(aController.Mid(offset, controllerLength));

	CMessageDigest* digest = CMessageDigestFactory::NewDigestLC(CMessageDigest::ESHA1);

	digest->Update(ptr);

	return digest;

	}