--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/userlibandfileserver/fileserver/sfile/sf_notifier_handlers.cpp	Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,422 @@
+// Copyright (c) 2008-2009 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:
+// f32\sfile\sf_notifier_handlers.cpp
+// 
+//
+#include "sf_std.h"
+#include "sf_notifier.h"
+
+#ifdef SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION
+
+TInt TFsNotificationOpen::Initialise(CFsRequest* /*aRequest*/)
+	{
+	return KErrNone;
+	}
+
+TInt TFsNotificationOpen::DoRequestL(CFsRequest* aRequest)
+	{
+	__PRINT(_L("TFsNotificationOpen::DoRequestL()"));
+	//Check whether we've got a notification manager 
+	//If not, create it and call OpenL
+	if(!FsNotificationManager::IsInitialised())
+		{
+		FsNotificationManager::OpenL();
+		}
+	
+	//Create a new CFsNotifyRequest and add it to the manager
+	CFsNotifyRequest* notifyRequest = CFsNotifyRequest::NewL();
+
+	//Get handle and add request to manager and Session->Handles
+	TInt handle = 0;
+	TBool addedToManager = EFalse;
+	TRAPD(ret,HandleRequestL(aRequest, notifyRequest, handle,addedToManager));	
+	if (ret!=KErrNone)
+		{
+		//Remove request from Session->Handles if it was already added
+		if (handle!=0)
+			aRequest->Session()->Handles().Remove(handle,ETrue);
+		
+		//Remove request from manager
+		if(addedToManager)
+			{
+			FsNotificationManager::Lock();
+			FsNotificationManager::RemoveNotificationRequest(notifyRequest);
+			FsNotificationManager::Unlock();
+			}
+		delete notifyRequest;
+		return(ret);
+		}
+	
+	notifyRequest->iSession = aRequest->Session();
+	aRequest->Session()->IncResourceCount();
+	return ret;
+	}
+
+//Get handle and add request to Session->Handles
+void TFsNotificationOpen::HandleRequestL(CFsRequest* aRequest, CFsNotifyRequest* aNotifyRequest, TInt& aHandle,TBool& aAddedToManager)
+	{
+	aAddedToManager = EFalse;
+	FsNotificationManager::AddNotificationRequestL(aNotifyRequest);
+	aAddedToManager = ETrue;
+	aHandle = aRequest->Session()->Handles().AddL(aNotifyRequest,ETrue);
+	TPtrC8 pH((TUint8*)&aHandle, sizeof(TInt));
+	aRequest->WriteL(KMsgPtr3,pH);
+	}
+
+TInt TFsNotificationBuffer::Initialise(CFsRequest* /*aRequest*/)
+	{
+	return KErrNone;
+	}
+
+TInt TFsNotificationBuffer::DoRequestL(CFsRequest* aRequest)
+	{
+	__PRINT(_L("TFsNotificationBuffer::DoRequestL()"));
+	HBufC8* buffer = (HBufC8*)(aRequest->Message().Ptr0());
+	TInt handle = aRequest->Message().Int3();
+	CFsNotifyRequest* notifyRequest = (CFsNotifyRequest*)SessionObjectFromHandle(handle,0,aRequest->Session());
+	if(!notifyRequest)
+		return KErrBadHandle;
+	if(!buffer)
+		return KErrArgument;
+
+	notifyRequest->iClientBufferSize = aRequest->Message().Int1();
+	notifyRequest->iBufferMsg = aRequest->Message();
+	return KErrNone;
+	}
+
+TInt TFsNotificationRequest::Initialise(CFsRequest* aRequest)
+	{
+	TInt handle = aRequest->Message().Int3();	
+	CFsNotifyRequest* notifyRequest = (CFsNotifyRequest*)SessionObjectFromHandle(handle,0,aRequest->Session());
+	if(!notifyRequest)
+		return KErrBadHandle;
+	
+	//Check the tail's validity
+	TInt tail;
+	TPckg<TInt> tailPkg(tail);
+	TInt r = aRequest->Read(KMsgPtr0,tailPkg);
+	
+	if(r!=KErrNone || tail < 0 || tail > notifyRequest->iClientBufferSize)
+		return KErrArgument;
+		
+	return KErrNone;
+	}
+
+TInt TFsNotificationRequest::DoRequestL(CFsRequest* aRequest)
+	{
+	__PRINT(_L("TFsNotificationRequest::DoRequestL()"));
+	//We need to check whether there is anything in the buffer
+	//If so we should complete straight away.
+	FsNotificationManager::Lock();
+	
+	//Get notification request
+	TInt handle = aRequest->Message().Int3();	
+	CFsNotifyRequest* notifyRequest = (CFsNotifyRequest*)SessionObjectFromHandle(handle,0,aRequest->Session());
+	if(!notifyRequest)
+		{
+		FsNotificationManager::Unlock();
+		return KErrBadHandle;
+		}
+	
+	TInt r = notifyRequest->SetClientMessage(aRequest->Message());
+	if(r != KErrNone)
+		{
+		FsNotificationManager::Unlock();
+		return r;
+		}
+
+	CFsNotifyRequest::TNotifyRequestStatus status = notifyRequest->ActiveStatus();
+	if(status==CFsNotifyRequest::EOutstanding ||
+		status==CFsNotifyRequest::EOutstandingOverflow)
+		{
+		notifyRequest->CompleteClientRequest(KErrNone);
+		}
+
+	//Update Status
+	if(status!=CFsNotifyRequest::EOutstandingOverflow)
+		{
+		notifyRequest->SetActive(CFsNotifyRequest::EActive);
+		
+		// DEF140387:
+		// If this is not the first call to RequestNotifications then if the 
+		// user just got an overflow notification (and requested again) 
+		// then its possible that iClientTail is not zero now.
+	
+		// We should set iClientHead to iClientTail, otherwise the client
+		// can receive another overflow straight away.
+		notifyRequest->iClientHead = notifyRequest->iClientTail;
+		}
+	else
+		{
+		notifyRequest->SetActive(CFsNotifyRequest::EInactive);
+		}
+	FsNotificationManager::Unlock();
+	return r;
+	}
+
+TInt TFsNotificationCancel::Initialise(CFsRequest* /*aRequest*/)
+	{
+	return KErrNone;
+	}
+
+TInt TFsNotificationCancel::DoRequestL(CFsRequest* aRequest)
+	{
+	__PRINT(_L("TFsNotificationCancel::DoRequestL()"));
+	FsNotificationManager::Lock();
+	
+	//Get notification request and deactivate filter
+	TInt handle = aRequest->Message().Int3();	
+	CFsNotifyRequest* notifyRequest = (CFsNotifyRequest*)SessionObjectFromHandle(handle,0,aRequest->Session());
+	if(!notifyRequest)
+		{
+		FsNotificationManager::Unlock();
+		return KErrBadHandle;
+		}
+	
+	if(notifyRequest->ClientMsgHandle()!=0)
+		{	
+		notifyRequest->SetActive(CFsNotifyRequest::EInactive);
+		notifyRequest->CompleteClientRequest(KErrCancel,ETrue);
+		}
+	FsNotificationManager::Unlock();
+	return KErrNone;
+	}
+
+TInt TFsNotificationSubClose::Initialise(CFsRequest* /*aRequest*/)
+	{
+	return KErrNone;
+	}
+
+TInt TFsNotificationSubClose::DoRequestL(CFsRequest* aRequest)
+	{
+	__PRINT(_L("TFsNotificationSubClose::DoRequestL()"));
+	FsNotificationManager::Lock();
+	
+	//We need to complete the buffer request here as this type of request is not
+	//completed in the normal way as it is kept open in order that we can access the buffer
+	//in the client-side for the lifetime of this subsession.
+	TInt handle = aRequest->Message().Int3();
+	CFsNotifyRequest* notifyRequest = (CFsNotifyRequest*) SessionObjectFromHandle(handle,0,aRequest->Session());
+	if(!notifyRequest)
+		{
+		FsNotificationManager::Unlock();
+		return KErrBadHandle;
+		}
+	
+	notifyRequest->RemoveFilters();
+	notifyRequest->CloseNotification(); //Completes the buffer and the client requests.
+	
+	TInt count = FsNotificationManager::Count();
+	
+	//Also deletes notifyRequest
+	aRequest->Session()->Handles().Remove(handle,ETrue);
+	if(count==1)
+		{
+		//If this is the last request then we need to remove the manager
+		FsNotificationManager::Close();
+		}
+	
+	FsNotificationManager::Unlock();
+	aRequest->Session()->DecResourceCount();
+	notifyRequest = NULL;
+
+	return(KErrNone);
+	}
+
+TInt TFsNotificationAdd::Initialise(CFsRequest* aRequest)
+	{
+	__PRINT(_L("TFsNotificationAdd::Initialise()"));
+	TUint filter = (TUint) aRequest->Message().Int0();
+	//If it's AllOps then it's ok
+	if (filter!=TFsNotification::EAllOps)
+		{
+
+		TInt invalid = filter & ~KNotificationValidFiltersMask;
+		//Check: Non-valid values ARE NOT set
+		//		 and valid values ARE set.
+		if(invalid || !filter)
+			{
+			return KErrArgument;
+			}
+		}
+	
+	TFileName path;
+	TInt r = aRequest->Read(KMsgPtr1,path);
+	if(r != KErrNone)
+		{
+		return r;
+		}
+	
+	if(path.Length() >= 2)
+		r=PathCheck(aRequest,path.Mid(2),&KCapFsSysFileTemp,&KCapFsPriFileTemp,&KCapFsROFileTemp, __PLATSEC_DIAGNOSTIC_STRING("Notification Add Filter"));
+	return r;
+	}
+
+TInt TFsNotificationAdd::DoRequestL(CFsRequest* aRequest)
+	{
+	__PRINT(_L("TFsNotificationAdd::DoRequestL()"));
+	TInt handle = aRequest->Message().Int3();
+	CFsNotifyRequest* notifyRequest = (CFsNotifyRequest*) SessionObjectFromHandle(handle,0,aRequest->Session());
+	if(!notifyRequest)
+		return KErrBadHandle;
+	
+	TFileName path;
+	aRequest->Read(KMsgPtr1,path);
+	
+	TFileName filename;
+	TInt r = aRequest->Read(KMsgPtr2,filename);
+	if(r!= KErrNone)
+		return r;
+	
+	__PRINT2(_L("TFsNotificationAdd::AddNotification() path=%S, filename=%S"),&path,&filename);
+	
+	//If this is a path starting with 'drive-letter:'
+	TInt driveNum = FsNotificationHelper::DriveNumber(path);
+	if(path.Length() >= 2 && (driveNum < 0 || driveNum > 25) && ((TChar)driveNum)!=((TChar)'?') && ((TChar)path[1])==(TChar)':')
+		{
+		return KErrPathNotFound;
+		}
+
+	CleanupStack::PushL(notifyRequest);
+	CFsNotificationPathFilter* filter = CFsNotificationPathFilter::NewL(path,filename);
+
+	//Bitmask of filter types
+	TUint filterMask = (TUint) aRequest->Message().Int0();
+	
+	r = notifyRequest->AddFilterL(filter,filterMask);
+	CleanupStack::Pop(notifyRequest);
+
+	if(r == KErrNone)
+		{
+		FsNotificationManager::Lock();
+		//Increment global filter register
+		FsNotificationManager::SetFilterRegisterMask(filterMask,(TBool)ETrue);
+		FsNotificationManager::Unlock();
+		}
+	return r;
+	}
+
+TInt TFsNotificationRemove::Initialise(CFsRequest* /*aRequest*/)
+	{
+	__PRINT(_L("TFsNotificationRemove::Initialise()"));
+	return KErrNone;
+	}
+
+TInt TFsNotificationRemove::DoRequestL(CFsRequest* aRequest)
+	{
+	__PRINT(_L("TFsNotificationRemove::DoRequestL()"));
+	FsNotificationManager::Lock();
+	
+	TInt handle = aRequest->Message().Int3();
+	CFsNotifyRequest* notifyRequest = (CFsNotifyRequest*) SessionObjectFromHandle(handle,0,aRequest->Session());
+	if(!notifyRequest)
+		{
+		FsNotificationManager::Unlock();
+		return KErrBadHandle;
+		}
+	
+	TInt r = notifyRequest->RemoveFilters();
+	FsNotificationManager::Unlock();
+	return r;
+	}
+
+#else //SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION
+
+CFsObjectCon* FsNotificationManager::iNotifyRequests = NULL;
+
+CFsNotifyRequest::CFsNotifyRequest()
+	{
+	}
+
+CFsNotifyRequest::~CFsNotifyRequest()
+	{
+	}
+
+TInt TFsNotificationOpen::Initialise(CFsRequest* /*aRequest*/)
+	{
+	return KErrNotSupported;
+	}
+
+TInt TFsNotificationOpen::DoRequestL(CFsRequest* /*aRequest*/)
+	{
+	return KErrNotSupported;
+	}
+
+void TFsNotificationOpen::HandleRequestL(CFsRequest* /*aRequest*/, CFsNotifyRequest* /*aNotifyRequest*/, TInt& /*aHandle*/,TBool& /*aAddedToManager*/)
+	{
+	User::Leave(KErrNotSupported);
+	}
+
+TInt TFsNotificationBuffer::Initialise(CFsRequest* /*aRequest*/)
+	{
+	return KErrNotSupported;
+	}
+
+TInt TFsNotificationBuffer::DoRequestL(CFsRequest* /*aRequest*/)
+	{
+	return KErrNotSupported;
+	}
+
+TInt TFsNotificationRequest::Initialise(CFsRequest* /*aRequest*/)
+	{
+	return KErrNotSupported;
+	}
+
+TInt TFsNotificationRequest::DoRequestL(CFsRequest* /*aRequest*/)
+	{
+	return KErrNotSupported;
+	}
+
+TInt TFsNotificationCancel::Initialise(CFsRequest* /*aRequest*/)
+	{
+	return KErrNotSupported;
+	}
+
+TInt TFsNotificationCancel::DoRequestL(CFsRequest* /*aRequest*/)
+	{
+	return KErrNotSupported;
+	}
+
+TInt TFsNotificationSubClose::Initialise(CFsRequest* /*aRequest*/)
+	{
+	return KErrNotSupported;
+	}
+
+TInt TFsNotificationSubClose::DoRequestL(CFsRequest* /*aRequest*/)
+	{
+	return KErrNotSupported;
+	}
+
+TInt TFsNotificationAdd::Initialise(CFsRequest* /*aRequest*/)
+	{
+	return KErrNotSupported;
+	}
+
+TInt TFsNotificationAdd::DoRequestL(CFsRequest* /*aRequest*/)
+	{
+	return KErrNotSupported;
+	}
+
+TInt TFsNotificationRemove::Initialise(CFsRequest* /*aRequest*/)
+	{
+	return KErrNotSupported;
+	}
+
+TInt TFsNotificationRemove::DoRequestL(CFsRequest* /*aRequest*/)
+	{
+	return KErrNotSupported;
+	}
+
+#endif //SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION
+