mtpfws/mtpfw/dataproviders/dputility/src/cmtpgetobject.cpp
changeset 0 d0791faffa3f
child 4 60a94a45d437
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mtpfws/mtpfw/dataproviders/dputility/src/cmtpgetobject.cpp	Tue Feb 02 01:11:40 2010 +0200
@@ -0,0 +1,143 @@
+// 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 <f32file.h>
+
+#include <mtp/cmtptypefile.h>
+#include <mtp/cmtpobjectmetadata.h>
+#include <mtp/mmtpdataproviderframework.h>
+#include <mtp/mmtpobjectmgr.h>
+#include <mtp/mmtpstoragemgr.h>
+#include <mtp/mtpprotocolconstants.h>
+#include <mtp/tmtptyperequest.h>
+
+#include "cmtpgetobject.h"
+#include "mtpdppanic.h"
+
+// Class constants.
+__FLOG_STMT(_LIT8(KComponent,"GetObject");)
+
+/**
+Verification data for the GetNumObjects request
+*/
+const TMTPRequestElementInfo KMTPGetObjectPolicy[] = 
+    {
+        {TMTPTypeRequest::ERequestParameter1, EMTPElementTypeObjectHandle, EMTPElementAttrFile, 0, 0, 0}
+    };
+
+/**
+Two-phase construction method
+@param aPlugin	The data provider plugin
+@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* CMTPGetObject::NewL(MMTPDataProviderFramework& aFramework, MMTPConnection& aConnection)
+	{
+	CMTPGetObject* self = new (ELeave) CMTPGetObject(aFramework, aConnection);
+	CleanupStack::PushL(self);
+	self->ConstructL();
+	CleanupStack::Pop(self);
+	return self;
+	}
+
+/**
+Destructor
+*/	
+EXPORT_C CMTPGetObject::~CMTPGetObject()
+	{	
+    __FLOG(_L8("~CMTPGetObject - Entry"));
+	delete iFileObject;
+    __FLOG(_L8("~CMTPGetObject - Exit"));
+    __FLOG_CLOSE;
+	}
+	
+/**
+Standard c++ constructor
+*/	
+CMTPGetObject::CMTPGetObject(MMTPDataProviderFramework& aFramework, MMTPConnection& aConnection) : 
+    CMTPRequestProcessor(aFramework, aConnection, sizeof(KMTPGetObjectPolicy)/sizeof(TMTPRequestElementInfo), KMTPGetObjectPolicy),
+	iError(EMTPRespCodeOK)
+	{
+	
+	}
+
+/**
+Second-phase constructor.
+*/        
+void CMTPGetObject::ConstructL()
+    {
+    __FLOG_OPEN(KMTPSubsystem, KComponent);
+    __FLOG(_L8("ConstructL - Entry"));
+    __FLOG(_L8("ConstructL - Exit"));
+    }
+
+/**
+GetObject request handler
+*/		
+void CMTPGetObject::ServiceL()
+	{
+    __FLOG(_L8("ServiceL - Entry"));
+	__ASSERT_DEBUG(iRequestChecker, Panic(EMTPDpRequestCheckNull));
+	TUint32 objectHandle = Request().Uint32(TMTPTypeRequest::ERequestParameter1);
+	//does not take ownership
+	CMTPObjectMetaData* objectInfo = iRequestChecker->GetObjectInfo(objectHandle);
+	if (!objectInfo)
+	    {
+	    // The object handle has already been checked, so an invalid handle can
+	    // only occur if it was invalidated during a context switch between
+	    // the validation time and now.
+	    iError = EMTPRespCodeInvalidObjectHandle;
+	    }
+	else if ( objectInfo->Uint(CMTPObjectMetaData::EFormatCode)==EMTPFormatCodeAssociation 
+	        && objectInfo->Uint(CMTPObjectMetaData::EFormatSubCode)==EMTPAssociationTypeGenericFolder)
+	    {
+	    iError = EMTPRespCodeInvalidObjectHandle;
+	    }
+    else
+        {
+    	BuildFileObjectL(objectInfo->DesC(CMTPObjectMetaData::ESuid));
+    	SendDataL(*iFileObject);	
+        }
+    __FLOG(_L8("ServiceL - Exit"));
+	}
+		
+
+/**
+Build the file object data set for the file requested
+@param aFileName	The file name of the requested object
+*/
+void CMTPGetObject::BuildFileObjectL(const TDesC& aFileName)
+	{
+    __FLOG(_L8("BuildFileObjectL - Entry"));
+	delete iFileObject;
+	iFileObject = NULL;
+	iFileObject = CMTPTypeFile::NewL(iFramework.Fs(), aFileName, EFileRead);
+    __FLOG(_L8("BuildFileObjectL - Exit"));
+	}
+	
+
+/**
+Handle the response phase of the current request
+@return EFalse
+*/		
+TBool CMTPGetObject::DoHandleResponsePhaseL()
+	{
+    __FLOG(_L8("DoHandleResponsePhaseL - Entry"));
+	TMTPResponseCode responseCode = (iCancelled ? EMTPRespCodeIncompleteTransfer : iError);
+	SendResponseL(responseCode);
+    __FLOG(_L8("DoHandleResponsePhaseL - Exit"));
+	return EFalse;
+	}