// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "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 <bautils.h>

#include <mtp/cmtptypearray.h>

#include <mtp/cmtpobjectmetadata.h>

#include <mtp/mmtpdataproviderframework.h>

#include <mtp/mmtpobjectmgr.h>

#include <mtp/mtpprotocolconstants.h>

#include <mtp/mmtpstoragemgr.h>

#include <mtp/tmtptyperequest.h>

#include "cmtpdeleteobject.h"

#include "mtpdpconst.h"

#include "mtpdppanic.h"

// Class constants.

__FLOG_STMT(_LIT8(KComponent,"DeleteObject");)

/**

Verification data for the DeleteObject request

*/

const TMTPRequestElementInfo KMTPDeleteObjectPolicy[] = 

    {

        {TMTPTypeRequest::ERequestParameter1, EMTPElementTypeObjectHandle, EMTPElementAttrWrite, 1, KMTPHandleAll, 0},

    };

/**

Standard c++ constructor

*/    

CMTPDeleteObject::CMTPDeleteObject(MMTPDataProviderFramework& aFramework, MMTPConnection& aConnection) :

    CMTPRequestProcessor(aFramework, aConnection, sizeof(KMTPDeleteObjectPolicy)/sizeof(TMTPRequestElementInfo), KMTPDeleteObjectPolicy)

    {

	__FLOG_OPEN(KMTPSubsystem, KComponent);

    __FLOG(_L8("CMTPDeleteObject - Entry"));

    __FLOG(_L8("CMTPDeleteObject - Exit"));

    }

/**

Two-phase construction method

@param aFramework	The data provider framework

@param aConnection	The connection from which the request comes

@return a pointer to the created request processor object

*/     

EXPORT_C MMTPRequestProcessor* CMTPDeleteObject::NewL(MMTPDataProviderFramework& aFramework,

                                            MMTPConnection& aConnection)

    {

    CMTPDeleteObject* self = new (ELeave) CMTPDeleteObject(aFramework, aConnection);

    return self;

    }

/**

Destructor

*/    

EXPORT_C CMTPDeleteObject::~CMTPDeleteObject()

    {

    __FLOG(_L8("~CMTPDeleteObject - Entry"));

    __FLOG(_L8("~CMTPDeleteObject - Exit"));

    __FLOG_CLOSE;

    }

/**

Verify the request

@return EMTPRespCodeOK if request is verified, otherwise one of the error response codes

*/ 

TMTPResponseCode CMTPDeleteObject::CheckRequestL()

	{

    __FLOG(_L8("CheckRequestL - Entry"));

	TMTPResponseCode result(EMTPRespCodeOK);

	if (IsStoreReadOnlyL(Request().Uint32(TMTPTypeRequest::ERequestParameter1)))

		{

		result = EMTPRespCodeStoreReadOnly;

		}

	else

		{

		result = CMTPRequestProcessor::CheckRequestL();

		}		

    __FLOG(_L8("CheckRequestL - Exit"));

	return result;	

	} 

void CMTPDeleteObject::DeleteFolderOrFileL(CMTPObjectMetaData* aMeta)

    {

    __ASSERT_DEBUG(aMeta, Panic(EMTPDpObjectNull));

    if (IsFolderObject(*aMeta))

        {

        __FLOG( _L8("Delete the folder itself which is empty ") );

        DeleteFolderL(aMeta);

        }

    else

        {

        __FLOG(_L8("Going to delete a file.")); 

        DeleteFileL(aMeta);

        }

    ProcessFinalPhaseL();

    }

void CMTPDeleteObject::DeleteFolderL(CMTPObjectMetaData* aMeta)

    {

    TParsePtrC fileNameParser(aMeta->DesC(CMTPObjectMetaData::ESuid));    

    TInt err = KErrNone;    

    if ( fileNameParser.IsWild() )

        {

        err = KErrBadName;

        }

    else

        {

        err = iFramework.Fs().RmDir(aMeta->DesC(CMTPObjectMetaData::ESuid));        

        }

    if( KErrNone == err )

        {

        iFramework.ObjectMgr().RemoveObjectL(aMeta->Uint(CMTPObjectMetaData::EHandle));

        iSuccessDeletion = ETrue;

        }

    }

void CMTPDeleteObject::DeleteFileL(CMTPObjectMetaData* aMeta)

    {

    TParsePtrC fileNameParser(aMeta->DesC(CMTPObjectMetaData::ESuid));

    TInt err = KErrNone;

    if ( !fileNameParser.NamePresent() )

        {

        err = KErrBadName;

        }

    else if ( fileNameParser.IsWild() )

        {

        err = KErrBadName;

        }

    else

        {

        err = iFramework.Fs().Delete(aMeta->DesC(CMTPObjectMetaData::ESuid));

        }

    if( KErrNone == err )

        {

        iFramework.ObjectMgr().RemoveObjectL(aMeta->Uint(CMTPObjectMetaData::EHandle));

        iSuccessDeletion = ETrue;

        }

    else if(KErrAccessDenied == err)

        {

        err = KErrBadHandle;

        iObjectWritePotected = ETrue;

        }

    }

/**

DeleteObject request handler

*/    

void CMTPDeleteObject::ServiceL()

    {

    __FLOG(_L8("ServiceL - Entry")); 

	const TUint32 KHandle(Request().Uint32(TMTPTypeRequest::ERequestParameter1));

	iObjectWritePotected = EFalse;

	iSuccessDeletion = EFalse;

	CMTPObjectMetaData* meta = NULL;

	meta = iRequestChecker->GetObjectInfo(KHandle);

	__ASSERT_DEBUG(meta, Panic(EMTPDpObjectNull));

	__FLOG_VA((_L8("meta->Uint(CMTPObjectMetaData::EDataProviderId) is %d"), meta->Uint(CMTPObjectMetaData::EDataProviderId))); 

	__FLOG_VA((_L8("iFramework.DataProviderId() is %d"), iFramework.DataProviderId())); 

	if ( meta != NULL && meta->Uint(CMTPObjectMetaData::EDataProviderId) == iFramework.DataProviderId())

	    {

	    DeleteFolderOrFileL(meta);

	    }

	else

	    {

	    SendResponseL(EMTPRespCodeInvalidObjectHandle);

	    }

    __FLOG(_L8("ServiceL - Exit")); 

    }

/**

Signal to the initiator that the deletion operation has finished with or without error

*/

void CMTPDeleteObject::ProcessFinalPhaseL()

	{

    __FLOG(_L8("ProcessFinalPhaseL - Entry"));

	TMTPResponseCode rsp = EMTPRespCodeOK;

	if ( iObjectWritePotected )

	    {

	    rsp = EMTPRespCodeObjectWriteProtected;

	    }

	else if ( !iSuccessDeletion )

	    {

	    rsp = EMTPRespCodeAccessDenied;

	    }

	SendResponseL(rsp);

    __FLOG(_L8("ProcessFinalPhaseL - Exit"));	

	}

/**

Indicates if the specified object is a generic folder association.

@param aObject The object meta-data.

@return ETrue if the specified object is a generic folder association, 

otherwise EFalse.

*/

TBool CMTPDeleteObject::IsFolderObject(const CMTPObjectMetaData& aObject)

    {

    return ((aObject.Uint(CMTPObjectMetaData::EFormatCode) == EMTPFormatCodeAssociation) &&

            (aObject.Uint(CMTPObjectMetaData::EFormatSubCode) == EMTPAssociationTypeGenericFolder));

    }

/**

Check whether the store on which the object resides is read only.

@return ETrue if the store is read only, EFalse if read-write

*/

TBool CMTPDeleteObject::IsStoreReadOnlyL(TUint32 aObjectHandle)

	{

    __FLOG(_L8("IsStoreReadOnlyL - Entry"));

	TBool result(EFalse);

	CMTPObjectMetaData *info(CMTPObjectMetaData::NewLC());

    if (iFramework.ObjectMgr().ObjectL(aObjectHandle, *info))

        {

    	TInt drive(iFramework.StorageMgr().DriveNumber(info->Uint(CMTPObjectMetaData::EStorageId)));

    	User::LeaveIfError(drive);

    	TVolumeInfo volumeInfo;

    	User::LeaveIfError(iFramework.Fs().Volume(volumeInfo, drive));			

    	if (volumeInfo.iDrive.iMediaAtt == KMediaAttWriteProtected) 

    		{

    		result = ETrue;

    		}

        }

	CleanupStack::PopAndDestroy(info);

    __FLOG(_L8("IsStoreReadOnlyL - Exit"));

	return result;	

	}