diff -r 000000000000 -r ba25891c3a9e installationservices/swi/source/swisidchecker/swisidchecker.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/installationservices/swi/source/swisidchecker/swisidchecker.cpp	Thu Dec 17 08:51:10 2009 +0200
@@ -0,0 +1,118 @@
+/*
+* Copyright (c) 2006-2009 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: 
+*
+*/
+
+
+#include "swisidchecker.h"
+
+#include <e32std.h>
+#include <ecom/implementationproxy.h>
+
+#include "swiinstallmonitor.h"
+#include <f32file.h>
+
+//////////////////////////////
+// ECOM Implementation Table
+//////////////////////////////
+
+
+TBool E32Dll()
+	{
+	return (ETrue);
+	}
+
+const TImplementationProxy ImplementationTable[] =
+	{
+		IMPLEMENTATION_PROXY_ENTRY(0x10281FBD, CSwiSidChecker::NewL)
+	};
+
+EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount)
+	{
+	aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy);
+	return ImplementationTable;
+	}
+
+//////////////////////////////
+// CSwiSidChecker
+//////////////////////////////
+
+CSwiSidChecker* CSwiSidChecker::NewL()
+	{
+	CSwiSidChecker* self = new(ELeave) CSwiSidChecker();
+	return self;
+	}
+
+CSwiSidChecker::CSwiSidChecker()
+	{
+	}
+	
+
+CSwiSidChecker::~CSwiSidChecker()
+	{
+	}
+
+TBool CSwiSidChecker::AppRegisteredAt(const TUid& aSid, TDriveUnit aDrive)
+	{
+	TBool present = EFalse; // init to avoid arm compiler warning
+	TRAPD(err, present = AppRegisteredAtInternalL(aSid, aDrive));
+	return (err == KErrNone) && present;
+	}
+
+TBool CSwiSidChecker::AppRegisteredAtInternalL(const TUid& aSid, TDriveUnit aDrive)
+	{
+	TBool present = EFalse; // init to avoid arm compiler warning
+
+	Swi::RSisRegistrySession sisRegSession;
+	User::LeaveIfError(sisRegSession.Connect());
+	CleanupClosePushL(sisRegSession);
+
+	present = sisRegSession.IsSidPresentL(aSid);
+
+	if(present)
+		{
+		// Check drive as well
+		TFileName fileName;
+		sisRegSession.SidToFileNameL(aSid, fileName, aDrive);
+		TInt drive;
+		User::LeaveIfError(RFs::CharToDrive(fileName[0], drive));
+		if(drive != aDrive)
+			{
+			present = EFalse;
+			}
+		}
+	
+
+	CleanupStack::PopAndDestroy(&sisRegSession);
+	
+	return present;
+	}
+	
+void CSwiSidChecker::SetRescanCallBackL(const TCallBack &aCallBack)
+	{
+	if(iSwiInstallMonitor)
+		{
+		delete iSwiInstallMonitor;
+		iSwiInstallMonitor = 0;
+		}
+
+	if(aCallBack.iFunction)
+		{
+		iSwiInstallMonitor = CSwiInstallMonitor::NewL(aCallBack);
+		iSwiInstallMonitor->Start();
+		}
+	}
+
+// End of file