diff -r 000000000000 -r 4e1aa6a622a0 dosservices/dosserver/src/dosextensionbase.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dosservices/dosserver/src/dosextensionbase.cpp	Tue Feb 02 00:53:00 2010 +0200
@@ -0,0 +1,109 @@
+/*
+* Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "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: 
+*    Implementation for the CDosExtensionBase class
+*
+*/
+
+
+#include "dosextensionbase.h"
+#include "dosclientserver.h"
+#include "dosserver.h"
+#include "dos_debug.h"
+#include <e32svr.h>
+
+//
+// ---------------------------------------------------------
+// CDosExtensionBase::ExecuteMessageL
+// ---------------------------------------------------------
+//  
+
+EXPORT_C TInt CDosExtensionBase::ExecuteMessageL(const RMessage2& aMessage)
+{
+    
+    API_TRACE_( "[DOSSERVER] CDosExtensionBase::ExecuteMessageL(...)" );
+	__ASSERT_DEBUG(aMessage.Function() == ECallFunction, 
+		PanicClient(aMessage,EPanicIllegalFunction));
+
+	TInt retVal(KErrNone);
+	TBool parameterModifiedByDSY(EFalse);
+
+	// Get data from RMessage
+	TExtensionParPckg extPars;
+	aMessage.ReadL(0, extPars);
+	
+	TInt dataLength(extPars().iParLength);
+	if (dataLength >= 0)
+	{
+		HBufC8* dataBuffer = HBufC8::NewMaxLC( dataLength );
+		TPtr8 dataPtr = dataBuffer->Des();
+		aMessage.ReadL( 1, dataPtr );
+
+		// Check autocomplete flag
+		TUint autoCompl(aMessage.Int2());
+		if (autoCompl == KAutoComplete)
+		{
+            COM_TRACE_4( "[DOSSERVER] MDosExtensionBaseDSY::CallFunctionL(0x%x,0x%x,0x%x,0x%x)"
+                ,extPars().iFunc
+                ,dataPtr.Ptr()
+                ,dataPtr.Length()
+                ,autoCompl );
+
+			retVal = CallFunctionL(extPars().iFunc, const_cast<TUint8*>(dataPtr.Ptr()), dataPtr.Length(), parameterModifiedByDSY);
+
+			if((retVal == KErrNone) && parameterModifiedByDSY)
+			{
+				// Write over client's parameters
+				retVal = aMessage.Write(1, dataPtr);
+			}
+		}
+		else
+		{
+			COM_TRACE_3( "[DOSSERVER] MDosExtensionBaseDSY::CallFunctionAndCompleteL(0x%x,0x%x,0x%x)"
+                ,extPars().iFunc
+                ,dataPtr.Ptr()
+                ,dataPtr.Length() );
+        
+            CallFunctionAndCompleteL(extPars().iFunc, const_cast<TUint8*>(dataPtr.Ptr()), dataPtr.Length(), aMessage);
+		}
+
+		CleanupStack::PopAndDestroy(); // dataBuffer
+	}
+	else
+	{
+		// Client passed negative parameter length
+		retVal = KErrGeneral;
+	}
+
+	return retVal;
+}
+
+//
+// ---------------------------------------------------------
+// CDosExtensionBase::CompleteRequest
+// ---------------------------------------------------------
+//  
+
+EXPORT_C void CDosExtensionBase::CompleteRequest(const RMessage2& aMessage, TInt aError, TAny* aPar, TInt aParLength, TBool aParameterModified) const
+{
+	// Write over client's parameters
+	if ((aError == KErrNone) && aParameterModified)
+	{
+		TPtrC8 ptr(static_cast<TUint8*>(aPar), aParLength);
+		aError = aMessage.Write(1, ptr);
+	}
+
+	RequestComplete(aMessage, aError);
+}
+