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/*
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* Copyright (c) 2007-2009 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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* crypto plugins loader
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*
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*/
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/**
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@file
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@internalComponent
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@released
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*/
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#ifndef __CRYPTOPlUGINSLOADER_H__
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#define __CRYPTOPlUGINSLOADER_H__
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#include <e32hashtab.h>
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#include <cryptospi/pluginentrydef.h>
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namespace CryptoSpi
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{
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/**
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The class holds the characteristics of an interface and DLL index,
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which is used for externalization.
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*/
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class TCharacteristicsDll
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{
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public:
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/**
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Constructor that constructs a TCharacteristicsDll object
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@param aCharacteristics a pointer to the Characteristics.
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@param aIndex the index of the plugindll that contains the interface implemetation
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*/
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TCharacteristicsDll(const TCharacteristics* aCharacteristics, TInt aIndex);
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/**
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Externalize this object to the supplied stream.
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@param aStream Stream to write TCharacteristicsDll to.
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*/
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void ExternalizeL(RWriteStream& aStream);
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public:
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/**
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The pointer the characteristic of an interface
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*/
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const TCharacteristics* iCharacteristics;
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/**
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The index of the plugin dll
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*/
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TInt iDllIndex;
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};
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/**
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The class contains a list of characteristics-DllIndex pair.
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which is used for externalization.
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*/
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NONSHARABLE_CLASS(CCharacteristicDllIndexList) : public CBase
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{
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public:
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/**
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Creates a new CCharacteristicDllIndexList.
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@return A pointer to the CCharacteristicDllIndexList instance
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*/
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static CCharacteristicDllIndexList* NewL();
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/**
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Creates a new CCharacteristicDllIndexList.
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Leave the CCharacteristicDllIndexList pointer on the cleanup stack.
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@return A pointer to the CCharacteristicDllIndexList instance
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*/
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static CCharacteristicDllIndexList* NewLC();
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/**
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Destructor
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*/
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~CCharacteristicDllIndexList();
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/**
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Externalize this object to the supplied stream.
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@param aStream Stream to write CCharacteristicDllIndexList to.
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*/
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void ExternalizeL(RWriteStream& aStream);
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private:
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/**
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Constructor
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*/
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CCharacteristicDllIndexList();
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public:
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/**
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The list of of characteristics-DllIndex pair.
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*/
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RArray<TCharacteristicsDll> iCharacteristicList;
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};
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/**
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This subclass of MStreamBuf is used with
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RWriteStream to count how many bytes are
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required to externalize an object.
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*/
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class TSizeStream : public MStreamBuf
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{
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public:
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inline TSizeStream();
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inline TInt Size() const;
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// override MStreamBuf
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virtual void DoWriteL(const TAny* /* aPtr */, TInt aLength);
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private:
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/**
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Accumulated stream length in bytes.
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*/
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TInt iSize;
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};
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inline TSizeStream::TSizeStream()
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: iSize(0)
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{
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}
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inline TInt TSizeStream::Size() const
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{
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return iSize;
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}
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/**
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This class loads all the plugins, build all the characteristics,
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and publish the properties for crypto spi.
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*/
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NONSHARABLE_CLASS(CCryptoPluginsLoader) : public CBase
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{
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public:
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/**
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Create a CCryptoPluginsLoader instance
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*/
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static CCryptoPluginsLoader* NewL();
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/**
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Create a CCryptoPluginsLoader instance.
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Leave the pointer on the cleanup stack
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*/
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static CCryptoPluginsLoader* NewLC();
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/**
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Destructor
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*/
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~CCryptoPluginsLoader();
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/**
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Create the properties of the plugin configurations.
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*/
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void CreatePluginConfigPropertyL();
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/**
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Create the properties for the interfaces
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*/
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void CreateInterfacePropertyL(TInt32 aInterface);
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private:
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/**
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Construtors
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*/
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CCryptoPluginsLoader();
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void ConstructL();
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/**
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Build the plugins' characteristics lists
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*/
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void BuildPluginCharacteristicsL();
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/**
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Build the plugin' characteristics list
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@param aInterfaceUid the interface UID
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@param aEnumerateFunc the entry pointer of enumeration function
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@param aDllIndex the index of the loaded plugin
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*/
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void BuildInterfaceCharacteristicsL(TUid aInterfaceUid,
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EnumerateCharacteristicsFunc aEnumerateFunc,
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TInt aDllIndex);
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/**
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Loads the crypto plugins
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@param aOption the option to load all the plugins or one more plugins
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*/
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void LoadPluginsL();
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/**
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Create the interfaces' properties and write to the stream
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@param aStream the stream to be written to
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@param aInterface the interface Uid
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*/
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void DoCreateInterfacePropertyL(RWriteStream& aStream, TInt32 aInterface);
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private:
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/**
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The plugin DLL list, which holds all the plugin DLLs
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*/
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RArray<RLibrary> iPluginDllList;
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/**
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The file name corresponding to the plugin DLLs.
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*/
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RArray<TFileName> iPluginNames;
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/**
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The characteristic list, the length of the array is the number of the interfaces
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*/
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RHashMap<TInt32, CCharacteristicDllIndexList*> iInterfaceCharacteristicsMap;
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};
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}
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#endif //__CRYPTOPlUGINSLOADER_H__
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