// Copyright (c) 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:

//

/**

 @file

 @internalTechnology

*/

#include <f32file.h>

#include <mtp/tmtptyperequest.h>

#include <mtp/mmtpdataproviderframework.h>

#include <mtp/mtpprotocolconstants.h>

#include <mtp/mmtpobjectmgr.h>

#include <mtp/cmtpobjectmetadata.h>

#include <mtp/cmtptypefile.h>

#include "cmtpimagedpgetpartialobject.h"

#include "mtpimagedppanic.h"

#include "mtpimagedpconst.h"

#include "cmtpimagedp.h"

#include "mtpimagedputilits.h"

#include "cmtpimagedpobjectpropertymgr.h"

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

/**

Verification data for the GetPartialObject request

*/

/**

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

*/ 

MMTPRequestProcessor* CMTPImageDpGetPartialObject::NewL(MMTPDataProviderFramework& aFramework, MMTPConnection& aConnection,CMTPImageDataProvider& aDataProvider)

    {

    CMTPImageDpGetPartialObject* self = new (ELeave) CMTPImageDpGetPartialObject(aFramework, aConnection, aDataProvider);

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

    }

/**

Destructor

*/	

CMTPImageDpGetPartialObject::~CMTPImageDpGetPartialObject()

    {

    __FLOG(_L8(">> CMTPImageDpGetPartialObject::~CMTPImageDpGetPartialObject"));

    delete iFileObject;

    delete iObjectMeta;

    __FLOG(_L8("<< CMTPImageDpGetPartialObject::~CMTPImageDpGetPartialObject"));

    __FLOG_CLOSE;

    }

/**

Standard c++ constructor

@param aFramework	The data provider framework

@param aConnection	The connection from which the request comes

*/	

CMTPImageDpGetPartialObject::CMTPImageDpGetPartialObject(MMTPDataProviderFramework& aFramework, MMTPConnection& aConnection, CMTPImageDataProvider& /*aDataProvider*/)

    :CMTPRequestProcessor(aFramework, aConnection, 0, NULL),

    iFs(iFramework.Fs())

    {

    }

/**

Second-phase construction

*/  

void CMTPImageDpGetPartialObject::ConstructL()

    {

    __FLOG_OPEN(KMTPSubsystem, KComponent);

    __FLOG(_L8(">> CMTPImageDpGetPartialObject::ConstructL"));

    iObjectMeta = CMTPObjectMetaData::NewL();

    __FLOG(_L8("<< CMTPImageDpGetPartialObject::ConstructL"));

    }

/**

Check the GetPartialObject reqeust

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

*/	

TMTPResponseCode CMTPImageDpGetPartialObject::CheckRequestL()

    {

    __FLOG(_L8(">> CMTPImageDpGetPartialObject::CheckRequestL"));

    TMTPResponseCode result = CMTPRequestProcessor::CheckRequestL();

    if(result == EMTPRespCodeOK)

        {

        result = MTPImageDpUtilits::VerifyObjectHandleL(iFramework, Request().Uint32(TMTPTypeRequest::ERequestParameter1), *iObjectMeta);

        }

    if(result == EMTPRespCodeOK && !VerifyParametersL())

        {

        result = EMTPRespCodeInvalidParameter;

        }

    __FLOG_VA((_L8("<< CMTPImageDpGetPartialObject::CheckRequestL 0x%x"), result));

    __FLOG(_L8("<< CMTPImageDpGetPartialObject::CheckRequestL"));

    return result;	

    }

/**

Verify if the parameter of the request (i.e. offset) is good.

@return ETrue if the parameter is good, otherwise, EFalse

*/		

TBool CMTPImageDpGetPartialObject::VerifyParametersL()

    {

    __FLOG(_L8(">> CMTPImageDpGetPartialObject::VerifyParametersL"));

    TBool result = EFalse;

    iOffset = Request().Uint32(TMTPTypeRequest::ERequestParameter2);

    iMaxLength = Request().Uint32(TMTPTypeRequest::ERequestParameter3);

    TEntry fileEntry;

    User::LeaveIfError(iFs.Entry(iObjectMeta->DesC(CMTPObjectMetaData::ESuid), fileEntry));

    if((iOffset < fileEntry.iSize)) 

        {

        result = ETrue;

        }

    __FLOG_VA((_L8("<< CMTPImageDpGetPartialObject::VerifyParametersL %d"), result));

    return result;	

    }

/**

GetPartialObject request handler

Send the partial object data to the initiator

*/	

void CMTPImageDpGetPartialObject::ServiceL()

    {

    // Get file information

    __FLOG(_L8(">> CMTPImageDpGetPartialObject::ServiceL"));

        // Pass the complete file back to the host

    iFileObject = CMTPTypeFile::NewL(iFramework.Fs(), iObjectMeta->DesC(CMTPObjectMetaData::ESuid), (TFileMode)(EFileRead | EFileShareReadersOnly), iMaxLength, iOffset);

    SendDataL(*iFileObject);	

    __FLOG(_L8("<< CMTPImageDpGetPartialObject::ServiceL"));

    }

/**

Signal to the initiator how much data has been sent

@return EFalse

*/

TBool CMTPImageDpGetPartialObject::DoHandleResponsePhaseL()

    {

    __FLOG(_L8(">> CMTPImageDpGetPartialObject::DoHandleResponsePhaseL"));

    TUint32 dataLength = iFileObject->GetByteSent();

    SendResponseL(EMTPRespCodeOK, 1, &dataLength);

    __FLOG(_L8("<< CMTPImageDpGetPartialObject::DoHandleResponsePhaseL"));

    return EFalse;

    }