securityanddataprivacytools/securitytools/certapp/store--/s32file.h
author Santosh Patil <santosh.v.patil@nokia.com>
Wed, 08 Jul 2009 11:25:26 +0100
changeset 0 2c201484c85f
child 8 35751d3474b7
permissions -rw-r--r--
Move the Security package to EPL, and add the implementations of the cryptographic algorithms
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#ifndef __S32FILE_H__
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#define __S32FILE_H__/*
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* Copyright (c) 2008-2009 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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*
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*/
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#include <e32base.h>
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#include <f32file.h>
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#include <s32strm.h>
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#include <fstream>
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#include <string>
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#include <memory>
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#include <map>
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/**
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 * @file
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 * @internalComponent
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 */
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#define KPermanentFileStoreLayoutUid TUid::Uid(268435536)
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typedef TUint32 TStreamId;
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/** The value of the null stream ID. */
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const TUint32 KNullStreamIdValue=0;
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const TUint32 KMaxStreamIdValue=0xfffffff;
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const TUint32 KMaskStreamIdValue=0xfffffff;
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const TInt KShiftStreamIdValue=28;
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namespace store_private
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{
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};
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class CStreamStore
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	{
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public:
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	virtual ~CStreamStore();
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	inline TStreamId ExtendL();
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	IMPORT_C void Delete(TStreamId anId);
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	IMPORT_C void DeleteL(TStreamId anId);
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	virtual void CommitL() = 0;
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	//
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	// Internal store emulation functions
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	//
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	virtual store_private::MemStreamBuf *CreateStoreWriteStream() = 0;
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	virtual store_private::MemStreamBuf *CreateStoreReadStream(TStreamId aId) const = 0;
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	virtual bool Writable() const = 0;
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	};
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class CPersistentStore : public CStreamStore
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	{
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public:
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	TStreamId Root();
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	void SetRootL(TStreamId anId);
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protected:
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	TStreamId iRoot;
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	};
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class CFileStore : public CPersistentStore
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	{
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public:
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	IMPORT_C void SetTypeL(const TUidType& aType);
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	};
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class CPermanentFileStore : public CFileStore
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	{
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public:
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	static CFileStore *ReplaceLC(RFs &aFs, const TDesC &aName, TUint aFileMode);
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	static CPermanentFileStore* OpenLC(RFs& aFs, const TDesC& aName, TUint aFileMode);
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public:
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	//
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	// Internal store emulation functions
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	//
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	virtual store_private::MemStreamBuf *CreateStoreWriteStream();
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	virtual store_private::MemStreamBuf *CreateStoreReadStream(TStreamId aId) const;
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	virtual bool Writable() const;
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private:
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	CPermanentFileStore(const TDesC &aName, TUint aFileMode);
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	virtual ~CPermanentFileStore();
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	virtual void CommitL();
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	void ReadInData();
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	void ReadStreamData(TStreamId aStreamId, TInt aFrameOffset);
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	bool iWritable;
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	std::auto_ptr<RReadStream> iFileIn;
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	std::auto_ptr<RWriteStream> iFileOut;
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	TUint32 iLastStreamIdCreated;
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	typedef std::map<TUint32, store_private::MemStreamBuf *> MemStreamBufPtrMap;
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	MemStreamBufPtrMap iStreams;
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	};
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class RStoreWriteStream : public RWriteStream
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	{
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public:
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	IMPORT_C TStreamId CreateLC(CStreamStore& aStore);
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	};
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class RStoreReadStream : public RReadStream
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	{
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public:
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	RStoreReadStream();
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	IMPORT_C void OpenLC(const CStreamStore& aStore, TStreamId aId);
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	};
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#endif