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/*
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* Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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* Base class for implementations of ctframework interfaces
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*
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*/
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/**
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@file
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@internalTechnology
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*/
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#ifndef __CFSCLIENT_H__
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#define __CFSCLIENT_H__
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#include "fstokencliserv.h"
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#include <e32base.h>
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class MCTToken;
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class RFileStoreClientSession;
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/**
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* Base class for implementations of ctframework interfaces. Derived classes
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* inherit from this and also implement the appropriate interface.
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*
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* It provides asynchronous functionality for sending requests to the filetokens
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* server and processing the responses.
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*
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* Some methods are const so they can be called by the cert apps client, whose
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* interface contains several const methods. These methods need to create
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* internal buffers, and this leads to iRequestDataBuf and iRequestPtr being
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* mutable.
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*/
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NONSHARABLE_CLASS(CFSClient) : public CActive
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{
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public:
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virtual ~CFSClient();
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protected:
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CFSClient(TInt aUID, MCTToken& aToken, RFileStoreClientSession& aClient);
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TInt AllocRequestBuffer(TInt aReqdSize) const;
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void FreeRequestBuffer() const;
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void SendSyncRequestAndHandleOverflowL(TFSTokenMessages aMessage,
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TInt aInitialBufSize,
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const TIpcArgs& aArgs) const;
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protected:
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// From CActive
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virtual void DoCancel();
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virtual TInt RunError(TInt aError);
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protected:
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/**
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* Maintains state for async requests to filetokens server, and completes
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* caller when required.
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*/
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class TAsyncRequest
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{
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public:
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void operator()(TFSTokenMessages aRequest, TRequestStatus* aStatus);
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void Complete(TInt aCompletionResult);
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void Cancel();
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inline TFSTokenMessages OutstandingRequest() { return iRequest; }
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public:
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~TAsyncRequest();
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private:
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TFSTokenMessages iRequest;
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TRequestStatus* iClientStatus;
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};
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TAsyncRequest iCurrentRequest; ///< The outstanding server request
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private:
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mutable HBufC8* iRequestDataBuf; ///< Buffer for messages passed to the server
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protected:
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MCTToken& iToken; ///< The token we belong to
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TInt iInterfaceUID; ///< UID of the cryptoken interface we implement
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RFileStoreClientSession& iClient; ///< Client session object for sending messages to the server
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mutable TPtr8 iRequestPtr; ///< Buffer pointer for derived classes to use
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};
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#endif // __CFSCLIENT_H__
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