/*+
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* Copyright (c) 2006-2009 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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* legacy plugin selector implementation+
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* Legacy plugin selector implementation+
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*+
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*/+
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+
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+
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/**+
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 @file+
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*/+
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#include "cryptospiutil.h"+
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#include "cryptospiproperty.h"+
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#include "e32uid.h"+
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#include <cryptospi/cryptospidef.h>+
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#include <e32property.h>+
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#include "rulecharacteristics.h"+
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+
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using namespace CryptoSpi;+
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+
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/**+
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The name of the executable which set up all the crypto spi+
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*/+
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_LIT(KCryptoSpiPropertySetupExe, "z:\\sys\\bin\\cryptospisetup.exe");+
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+
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void CryptoSpiUtil::RetrieveCharacteristicsL(TInt32 aInterface, RPointerArray<CCharacteristicsAndPluginName>& aList)+
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	{+
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	RDesReadStream stream;+
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	RBuf8 rBuf;+
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	TInt count=0;+
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	CleanupClosePushL(rBuf);+
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	TInt length=RetrieveCharacteristicsL(aInterface, stream, rBuf, count);+
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	if (length<=4)	+
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		{+
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		CleanupStack::PopAndDestroy(&rBuf);+
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		return;+
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		}+
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		+
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	//internalize the characteristics and dll index+
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	for (TInt i=0;i<count;i++)+
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		{+
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		CCharacteristicsAndPluginName* temp=CCharacteristicsAndPluginName::NewLC(aInterface);+
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		temp->InternalizeL(stream);+
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		aList.AppendL(temp);+
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		CleanupStack::Pop(temp); //temp+
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		}+
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	CleanupStack::PopAndDestroy(&rBuf);+
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	}+
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+
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void CryptoSpiUtil::RetrieveCharacteristicsL(TInt32 aInterface, RPointerArray<CRulesCharacteristicsAndPluginName>& aList)+
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	{+
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	RDesReadStream stream;+
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	RBuf8 rBuf;+
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	TInt count=0;+
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	CleanupClosePushL(rBuf);+
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	TInt length=RetrieveCharacteristicsL(aInterface, stream, rBuf, count);+
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	if (length<=4)	+
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		{+
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		CleanupStack::PopAndDestroy(&rBuf);+
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		return;+
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		}+
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		+
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	//internalize the characteristics and dll index+
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	for (TInt i=0;i<count;i++)+
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		{+
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		CRulesCharacteristicsAndPluginName* temp=CRulesCharacteristicsAndPluginName::NewLC(aInterface);+
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		temp->InternalizeL(stream);+
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		aList.AppendL(temp);+
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		CleanupStack::Pop(temp); //temp+
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		}+
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	CleanupStack::PopAndDestroy(&rBuf);+
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	}+
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+
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TInt CryptoSpiUtil::RetrieveCharacteristicsL(TInt32 aInterface, RDesReadStream& aStream, RBuf8& aBuf, TInt& aCount)+
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	{+
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	TBuf8<KMaxFileName> buf;+
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	TInt testResult = RProperty::Get(KCryptoSpiPropertyCat, aInterface, buf);+
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	if (testResult==KErrNotFound)+
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		{+
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		//run the exe to Publish the properties+
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		RunCryptoSpiPropertySetupExe();+
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		testResult = RProperty::Get(KCryptoSpiPropertyCat, aInterface, buf);+
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		if (testResult==KErrNotFound)+
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			{+
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			//Error+
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			User::Leave(testResult);+
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			}+
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		}+
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	+
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	//Try to read the length first+
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	RDesReadStream rStream(buf);+
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	TInt32 len=rStream.ReadInt32L();+
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	+
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	//If the property is empty+
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	if (len<=4)+
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		{+
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		return len;+
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		}+
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+
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	//Allocate memory +
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	aBuf.CreateMaxL(len);+
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	User::LeaveIfError(RProperty::Get(KCryptoSpiPropertyCat, aInterface, aBuf));+
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	+
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	//Read the length+
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	aStream.Open(aBuf);+
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	len=aStream.ReadInt32L();+
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	+
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	//Read the count of the characteristics+
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	aCount=aStream.ReadInt16L();+
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	return len;	+
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	}+
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+
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TInt CryptoSpiUtil::DllIndexToName(TInt aDllIndex, TFileName& aName)+
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	{+
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	TInt dllCount=0;+
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	TInt result = RProperty::Get(KCryptoSpiPropertyCat, KPluginsConfigurationKeyCount, dllCount);	+
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	if (result==KErrNotFound)+
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		{+
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		//run the exe to publish the properties+
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		RunCryptoSpiPropertySetupExe();+
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		result = RProperty::Get(KCryptoSpiPropertyCat, KPluginsConfigurationKeyCount, dllCount);+
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		if (result==KErrNotFound)+
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			{+
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			return KErrNotFound;+
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			}+
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		}+
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	if (aDllIndex>=dllCount)+
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		{+
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		return KErrNotFound;+
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		}+
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	+
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	TBuf8<KMaxFileName> buf;+
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	result = RProperty::Get(KCryptoSpiPropertyCat, KPluginsConfigurationKey+aDllIndex, buf);+
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	if (result==KErrNotFound)+
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		{+
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		return KErrNotFound;+
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		}+
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				+
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	RDesReadStream rStream(buf);+
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	rStream>>aName;+
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	return KErrNone;		+
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	}+
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		+
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void CryptoSpiUtil::LoadPluginDllLC(RLibrary& aLib, TFileName& aFileName)+
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	{+
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	User::LeaveIfError(aLib.Load(aFileName));+
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	CleanupClosePushL(aLib);+
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	RLibrary plugin=aLib;+
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	CleanupClosePushL(plugin);+
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	User::LeaveIfError(aLib.Duplicate(RThread(), EOwnerProcess));+
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	CleanupStack::PopAndDestroy(&plugin);		+
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	}+
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+
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TInt CryptoSpiUtil::RunCryptoSpiPropertySetupExe()+
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	{+
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	const TUidType setupExeUidType(KExecutableImageUid, TUid::Null(), KCryptoSpiPropertyCat);+
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	RProcess setupProc;+
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	TInt result = setupProc.Create(KCryptoSpiPropertySetupExe, KNullDesC, setupExeUidType);+
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	if (result != KErrNone)+
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		{+
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		return result;+
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		}+
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	TRequestStatus setupStatus;+
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	// request Rendezvous before Resume() to avoid race condition.+
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	// Also note if request to rendezvous fails (OOM etc.) then setup exe may+
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	// complete after query code, with feature property possibly undefined+
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	setupProc.Rendezvous(setupStatus);+
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	setupProc.Resume();+
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	setupProc.Close();+
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	User::WaitForRequest(setupStatus);+
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	return setupStatus.Int();+
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	}+
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+
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CCharacteristics* CryptoSpiUtil::CreateCharacteristicsL(TInt32 aInterface)+
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	{+
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	CCharacteristics* character=NULL;+
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	switch (aInterface)+
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		{+
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	case KHashInterface:+
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	case KAsyncHashInterface:+
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		character=CHashCharacteristics::NewL();+
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		break;+
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#ifdef SYMBIAN_SDP_IPSEC_VOIP_SUPPORT				+
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	case KMacInterface:+
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	case KAsyncMacInterface:+
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		character=CMacCharacteristics::NewL();+
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		break;+
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#endif		+
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	case KRandomInterface:+
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	case KAsyncRandomInterface:+
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		character=CRandomCharacteristics::NewL();+
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		break;+
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+
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	case KSymmetricCipherInterface:+
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	case KAsyncSymmetricCipherInterface:+
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		character=CSymmetricCipherCharacteristics::NewL();+
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		break;+
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+
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	case KAsymmetricCipherInterface:+
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	case KAsyncAsymmetricCipherInterface:+
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		character=CAsymmetricCipherCharacteristics::NewL();+
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		break;+
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+
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	case KSignerInterface:+
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	case KAsyncSignerInterface:+
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	case KVerifierInterface:+
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	case KAsyncVerifierInterface:+
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		character=CAsymmetricSignatureCharacteristics::NewL();+
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		break;+
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+
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	case KKeyAgreementInterface:+
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	case KAsyncKeyAgreementInterface:+
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		character=CKeyAgreementCharacteristics::NewL();+
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		break;+
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+
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	case KKeypairGeneratorInterface:+
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	case KAsyncKeypairGeneratorInterface:+
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		character=CKeypairGeneratorCharacteristics::NewL();+
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		break;+
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	+
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	default:+
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		User::Leave(KErrNotSupported);+
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		}+
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	return character;+
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	}+
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+
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