sl@0: // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of the License "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: #include "observer_plugin.h"
sl@0: #include "plugincommon.h"
sl@0: #include <f32pluginutils.h>
sl@0: 
sl@0: /**
sl@0: Leaving New function for the plugin
sl@0: @internalComponent
sl@0: */
sl@0: CObserverPlugin* CObserverPlugin::NewL()
sl@0: 	{
sl@0: 	CObserverPlugin* self = new(ELeave) CObserverPlugin;
sl@0:     CleanupStack::PushL(self);
sl@0:     self->ConstructL();
sl@0:     CleanupStack::Pop();
sl@0: 	return self;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: /**
sl@0: Constructor for the plugin
sl@0: @internalComponent
sl@0: */
sl@0: CObserverPlugin::CObserverPlugin() : iInterceptsEnabled(EFalse),
sl@0: 									 iLogging(ETrue)
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: 
sl@0: void CObserverPlugin::ConstructL()
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: The destructor for the plugin
sl@0: @internalComponent
sl@0: */
sl@0: CObserverPlugin::~CObserverPlugin()
sl@0: 	{
sl@0: 	iFs.Close();
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Initialise the plugin.
sl@0: @internalComponent
sl@0: */
sl@0: void CObserverPlugin::InitialiseL()
sl@0: 	{
sl@0: 	User::LeaveIfError(iFs.Connect());
sl@0: 	CleanupClosePushL(iFs);
sl@0: 
sl@0: 	_LOG(_L("CObserverPlugin InitialiseL"));
sl@0: 	EnableInterceptsL();
sl@0: 	
sl@0: 	CleanupStack::Pop(); // iFs
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Enable the plugin's intercepts.
sl@0: @internalComponent
sl@0: */
sl@0: void CObserverPlugin::EnableInterceptsL()
sl@0: 	{
sl@0: 	if (iInterceptsEnabled) return;
sl@0: 	
sl@0: 	User::LeaveIfError(RegisterIntercept(EFsFileRead,		EPrePostIntercept));
sl@0: 	User::LeaveIfError(RegisterIntercept(EFsFileWrite,		EPrePostIntercept));
sl@0: 	User::LeaveIfError(RegisterIntercept(EFsDirOpen,		EPrePostIntercept));
sl@0: 	User::LeaveIfError(RegisterIntercept(EFsFileLock,		EPrePostIntercept));
sl@0: 	User::LeaveIfError(RegisterIntercept(EFsFileUnLock,		EPrePostIntercept));
sl@0: 	User::LeaveIfError(RegisterIntercept(EFsFileSeek,		EPrePostIntercept));
sl@0: 	User::LeaveIfError(RegisterIntercept(EFsFileSize,		EPrePostIntercept));
sl@0: 	User::LeaveIfError(RegisterIntercept(EFsFileSetSize,	EPrePostIntercept));
sl@0: 	User::LeaveIfError(RegisterIntercept(EFsDirReadOne,		EPrePostIntercept));
sl@0: 	User::LeaveIfError(RegisterIntercept(EFsDirReadPacked,	EPrePostIntercept));
sl@0: 	User::LeaveIfError(RegisterIntercept(EFsFileOpen,		EPrePostIntercept));
sl@0: 	User::LeaveIfError(RegisterIntercept(EFsFileCreate,		EPrePostIntercept));
sl@0: 	User::LeaveIfError(RegisterIntercept(EFsFileReplace,	EPrePostIntercept));
sl@0: 	User::LeaveIfError(RegisterIntercept(EFsFileRename,		EPrePostIntercept));
sl@0:    	User::LeaveIfError(RegisterIntercept(EFsReadFileSection,EPrePostIntercept));
sl@0: 	User::LeaveIfError(RegisterIntercept(EFsFileSubClose,	EPrePostIntercept));
sl@0: 	User::LeaveIfError(RegisterIntercept(EFsDriveList,		EPrePostIntercept)); 
sl@0: 	User::LeaveIfError(RegisterIntercept(EFsSubst,			EPrePostIntercept));
sl@0: 	User::LeaveIfError(RegisterIntercept(EFsSetSubst,		EPrePostIntercept));
sl@0: 	
sl@0: 	_LOG(_L("Observer Plugin: Enabled intercepts."));
sl@0:     
sl@0: 	iInterceptsEnabled = ETrue;
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Disable the plugin's intercepts.
sl@0: @internalComponent
sl@0: */
sl@0: void CObserverPlugin::DisableInterceptsL()
sl@0: 	{
sl@0: 	if (!iInterceptsEnabled) return;
sl@0: 	
sl@0: 	User::LeaveIfError(UnregisterIntercept(EFsFileRead,		EPrePostIntercept));
sl@0: 	User::LeaveIfError(UnregisterIntercept(EFsFileRename,	EPrePostIntercept));
sl@0: 	User::LeaveIfError(UnregisterIntercept(EFsFileWrite,	EPrePostIntercept));
sl@0: 	User::LeaveIfError(UnregisterIntercept(EFsDirOpen,		EPrePostIntercept));
sl@0: 	User::LeaveIfError(UnregisterIntercept(EFsFileLock,		EPrePostIntercept));
sl@0: 	User::LeaveIfError(UnregisterIntercept(EFsFileUnLock,	EPrePostIntercept));
sl@0: 	User::LeaveIfError(UnregisterIntercept(EFsFileSeek,		EPrePostIntercept));
sl@0: 	User::LeaveIfError(UnregisterIntercept(EFsFileSize,		EPrePostIntercept));
sl@0: 	User::LeaveIfError(UnregisterIntercept(EFsFileSetSize,	EPrePostIntercept));
sl@0: 	User::LeaveIfError(UnregisterIntercept(EFsFileCreate,	EPrePostIntercept));
sl@0: 	User::LeaveIfError(UnregisterIntercept(EFsFileOpen, 	EPrePostIntercept));
sl@0: 	User::LeaveIfError(UnregisterIntercept(EFsFileReplace, 	EPrePostIntercept));
sl@0: 	User::LeaveIfError(UnregisterIntercept(EFsFileSubClose,        EPrePostIntercept));
sl@0: 	User::LeaveIfError(UnregisterIntercept(EFsReadFileSection,EPrePostIntercept));
sl@0: 	User::LeaveIfError(UnregisterIntercept(EFsDirReadOne,	EPrePostIntercept));
sl@0: 	User::LeaveIfError(UnregisterIntercept(EFsDirReadPacked,EPrePostIntercept));
sl@0: 	User::LeaveIfError(UnregisterIntercept(EFsDriveList,	EPrePostIntercept));
sl@0: 	User::LeaveIfError(UnregisterIntercept(EFsSubst,	EPrePostIntercept));
sl@0: 	User::LeaveIfError(UnregisterIntercept(EFsSetSubst,	EPrePostIntercept));
sl@0: 
sl@0: 
sl@0: 	_LOG(_L("Observer Plugin: Disabled intercepts."));
sl@0:     
sl@0: 	iInterceptsEnabled = EFalse;
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Handle requests
sl@0: @internalComponent
sl@0: */
sl@0: TInt CObserverPlugin::DoRequestL(TFsPluginRequest& aRequest)
sl@0: 	{
sl@0: 	TInt err = KErrNone;
sl@0: 
sl@0: 	TInt function = aRequest.Function();
sl@0: 
sl@0: 	if (aRequest.IsPostOperation())
sl@0: 		{
sl@0: 		_LOG2(_L("CObserverPlugin post intercept for function %d"), function);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		_LOG2(_L("CObserverPlugin pre intercept for function %d"), function);
sl@0: 		_LOG2(_L("CObserverPlugin pre intercept on drive %d"), aRequest.DriveNumber());
sl@0: 		}
sl@0: 
sl@0: 	if(function == EFsFileOpen)
sl@0: 		{
sl@0: 		// Check that FileName can't be used in pre-operation (as the handle doesn't exist yet!)
sl@0: 		TFileName shareName;
sl@0: 		TInt nErr = aRequest.FileName(shareName);
sl@0: 		if (aRequest.IsPostOperation())
sl@0: 			{
sl@0: 			TFileName fileName = aRequest.Src().FullName();
sl@0: 			nErr = shareName.Compare(fileName);
sl@0: 			User::LeaveIfError(nErr);
sl@0: 			}
sl@0: 		else if(nErr != KErrNotSupported)
sl@0: 			{
sl@0: 			User::Leave(KErrArgument);
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	return err;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: CFsPluginConn* CObserverPlugin::NewPluginConnL()
sl@0: 	{
sl@0: 	return new(ELeave) CObserverPluginConn();
sl@0: 	}
sl@0: 
sl@0: 
sl@0: //Synchronous RPlugin::DoControl
sl@0: TInt CObserverPlugin::FsPluginDoControlL(CFsPluginConnRequest& aRequest)
sl@0: 	{
sl@0: 	TInt err = KErrNone;
sl@0: 	TPckg<TBool> interceptStatusDes(iInterceptsEnabled);
sl@0: 	
sl@0: 	//We can use this to set the drive
sl@0: 	//We can store this as a member of this class.
sl@0: 	TInt function = aRequest.Function();
sl@0: 	switch(function)
sl@0: 		{
sl@0: 		//case KPluginSetDrive:
sl@0: 		//	//{
sl@0: 		//	TPckg<TChar> drive(iDriveToTest);
sl@0: 		//	TRAP(err,aRequest.ReadParam1L(drive));
sl@0: 		//	break;
sl@0: 		//	}
sl@0: 		//case KPluginGetError:
sl@0: 		//	{
sl@0: 		//	TPckg<TInt> errCodeDes(iLastError);
sl@0: 		//	TPckg<TInt> errMsgDes(iMessage);
sl@0: 		//	TRAP(err,aRequest.WriteParam1L(errCodeDes));
sl@0: 		//	TRAP(err,aRequest.WriteParam2L(errMsgDes));
sl@0: 		//	break;
sl@0: 		//	}
sl@0: 		case KPluginToggleIntercepts:
sl@0: 			{
sl@0: 			iInterceptsEnabled ^= (TBool)1; //toggle intercepts;
sl@0: 			TRAP(err,aRequest.WriteParam1L(interceptStatusDes));
sl@0: 			break;
sl@0: 			}
sl@0: 		default:
sl@0: 			break;
sl@0: 		}
sl@0: 
sl@0: 	return err;
sl@0: 	}
sl@0: 
sl@0: TInt CObserverPluginConn::DoControl(CFsPluginConnRequest& aRequest)
sl@0: 	{
sl@0: 	return ((CObserverPlugin*)Plugin())->FsPluginDoControlL(aRequest);
sl@0: 	}
sl@0: 
sl@0: void CObserverPluginConn::DoRequest(CFsPluginConnRequest& aRequest)
sl@0: 	{
sl@0: 	DoControl(aRequest);
sl@0: 	}
sl@0: 
sl@0: void CObserverPluginConn::DoCancel(TInt /*aReqMask*/)
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: 
sl@0: //factory functions
sl@0: 
sl@0: class CObserverPluginFactory : public CFsPluginFactory
sl@0: 	{
sl@0: public:
sl@0: 	CObserverPluginFactory();
sl@0: 	virtual TInt Install();			
sl@0: 	virtual CFsPlugin* NewPluginL();
sl@0: 	virtual CFsPlugin* NewPluginConnL();
sl@0: 	virtual TInt UniquePosition();
sl@0: 	};
sl@0: 
sl@0: /**
sl@0: Constructor for the plugin factory
sl@0: @internalComponent
sl@0: */
sl@0: CObserverPluginFactory::CObserverPluginFactory()
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Install function for the plugin factory
sl@0: @internalComponent
sl@0: */
sl@0: TInt CObserverPluginFactory::Install()
sl@0: 	{
sl@0: 	//SetSupportedDrives(1<<23);
sl@0: 	iSupportedDrives = KPluginSupportAllDrives; 
sl@0: 	return(SetName(&KObserverPluginName));
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: @internalComponent
sl@0: */
sl@0: TInt CObserverPluginFactory::UniquePosition()
sl@0: 	{
sl@0: 	return(KObserverPos);
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Plugin factory function
sl@0: @internalComponent
sl@0: */
sl@0: CFsPlugin* CObserverPluginFactory::NewPluginL()
sl@0: 
sl@0: 	{
sl@0: 	return CObserverPlugin::NewL();
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Plugin factory function
sl@0: @internalComponent
sl@0: */
sl@0: CFsPlugin* CObserverPluginFactory::NewPluginConnL()
sl@0: 
sl@0: 	{
sl@0: 	return CObserverPlugin::NewL();
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Create a new Plugin
sl@0: @internalComponent
sl@0: */
sl@0: extern "C" {
sl@0: 
sl@0: EXPORT_C CFsPluginFactory* CreateFileSystem()
sl@0: 	{
sl@0: 	return(new CObserverPluginFactory());
sl@0: 	}
sl@0: }
sl@0: