--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cryptoservices/filebasedcertificateandkeystores/source/generic/client/CFSClient.h	Wed Jul 08 11:25:26 2009 +0100
@@ -0,0 +1,97 @@
+/*
+* Copyright (c) 2004-2009 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: 
+* Base class for implementations of ctframework interfaces
+*
+*/
+
+
+
+
+/**
+ @file 
+ @internalTechnology
+*/
+ 
+#ifndef __CFSCLIENT_H__
+#define __CFSCLIENT_H__
+
+#include "fstokencliserv.h"
+#include <e32base.h>
+
+class MCTToken;
+class RFileStoreClientSession;
+
+/**
+ * Base class for implementations of ctframework interfaces.  Derived classes
+ * inherit from this and also implement the appropriate interface.
+ *
+ * It provides asynchronous functionality for sending requests to the filetokens
+ * server and processing the responses.
+ *
+ * Some methods are const so they can be called by the cert apps client, whose
+ * interface contains several const methods.  These methods need to create
+ * internal buffers, and this leads to iRequestDataBuf and iRequestPtr being
+ * mutable.
+ */
+NONSHARABLE_CLASS(CFSClient) : public CActive
+	{
+public:
+	virtual ~CFSClient();
+	
+protected:
+	CFSClient(TInt aUID, MCTToken& aToken, RFileStoreClientSession& aClient);
+	TInt AllocRequestBuffer(TInt aReqdSize) const;
+	void FreeRequestBuffer() const;
+	void SendSyncRequestAndHandleOverflowL(TFSTokenMessages aMessage,
+										   TInt aInitialBufSize,
+										   const TIpcArgs& aArgs) const;
+
+protected:
+	// From CActive
+	virtual void DoCancel();	
+	virtual TInt RunError(TInt aError);
+	
+protected:
+	/**
+	 * Maintains state for async requests to filetokens server, and completes
+	 * caller when required.
+	 */
+	class TAsyncRequest
+	{
+	public:
+		void operator()(TFSTokenMessages aRequest, TRequestStatus* aStatus);
+		void Complete(TInt aCompletionResult);			
+		void Cancel();
+		inline TFSTokenMessages OutstandingRequest() { return iRequest; }
+	public:
+		~TAsyncRequest();
+	private:
+		TFSTokenMessages iRequest;
+		TRequestStatus* iClientStatus;
+	};
+	
+	TAsyncRequest iCurrentRequest;		///< The outstanding server request
+	
+private:
+	mutable HBufC8* iRequestDataBuf;  	///< Buffer for messages passed to the server
+	
+protected:
+	MCTToken& iToken;					///< The token we belong to
+	TInt iInterfaceUID;					///< UID of the cryptoken interface we implement
+	RFileStoreClientSession& iClient;	///< Client session object for sending messages to the server
+	mutable TPtr8 iRequestPtr;			///< Buffer pointer for derived classes to use
+	};
+
+#endif	//	__CFSCLIENT_H__