--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hti/HtiServicePlugins/HtiIpProxyServicePlugin/IPProxyEngine/Src/CExprTCPOpen.cpp	Wed Oct 13 16:17:58 2010 +0300
@@ -0,0 +1,144 @@
+/*
+* Copyright (c) 2009 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:  IPProxy TCP protocol expression for opening phone side TCP
+*                connection.
+*
+*/
+
+
+
+// INCLUDE FILES
+#include "CExprTCPOpen.h"
+#include "CommRouterDefinitions.h"
+#include "MExpressionObserverTCP.h"
+
+#define DEBUG_FILENAME "IPProxyEngine.log"
+#include "DebugPrint.h"
+
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CExprTCPOpen::CExprTCPOpen
+// -----------------------------------------------------------------------------
+//
+CExprTCPOpen::CExprTCPOpen( MExpressionObserverTCP* aObserver )
+    : iObserver( aObserver )
+    {
+    __ASSERT_DEBUG( iObserver, User::Invariant() );
+    }
+
+// -----------------------------------------------------------------------------
+// CExprTCPOpen::NewL
+// -----------------------------------------------------------------------------
+//
+CExprTCPOpen* CExprTCPOpen::NewL( MExpressionObserverTCP* aObserver )
+    {
+    CExprTCPOpen* self = CExprTCPOpen::NewLC( aObserver );
+    CleanupStack::Pop();
+
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// CExprTCPOpen::NewLC
+// -----------------------------------------------------------------------------
+//
+CExprTCPOpen* CExprTCPOpen::NewLC( MExpressionObserverTCP* aObserver )
+    {
+    CExprTCPOpen* self = new( ELeave ) CExprTCPOpen( aObserver );
+    CleanupStack::PushL( self );
+
+    return self;
+    }
+
+
+// Destructor
+CExprTCPOpen::~CExprTCPOpen()
+    {
+    }
+
+
+// -----------------------------------------------------------------------------
+// CExprTCPOpen::HandleReceivedDataL()
+// -----------------------------------------------------------------------------
+//
+TBool CExprTCPOpen::HandleRecievedMsgL( TDes8& aData, TInt& aStartPos, TInt& aLength )
+    {
+    // Check if the prefix matches
+    aStartPos = aData.Find( KTCPOpenPrefix );
+
+    if ( aStartPos != KErrNotFound  )
+        {
+        // Found a matching prefix
+        // Let the observer know
+        iObserver->FrameStarted();
+
+        TPtr8 dataToParse( aData.MidTPtr( aStartPos ) );
+
+        TInt err = TryParsingL( dataToParse, aLength );
+
+        if ( err != KErrNone )
+            {
+            // corrupted data in the frame
+            iObserver->ProtocolErrorL( err, aData );
+            // delete the corrupted data
+            aData.SetLength( 0 );
+            }
+
+        return ETrue;
+        }
+    else
+        {
+        return EFalse;
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// CExprTCPOpen::TryParsingL
+// -----------------------------------------------------------------------------
+//
+TInt CExprTCPOpen::TryParsingL( TDes8& aData, TInt& aLength )
+    {
+    __ASSERT_ALWAYS( aData.Left( KTCPOpenPrefix().Length() ) == KTCPOpenPrefix,
+        User::Panic( _L("Protocol"), 1 ) );
+
+    // TCP_OPEN:0123
+    TInt frameOverhead =
+        KTCPOpenPrefix().Length() +
+        KHexDecimalLength;
+
+    if ( aData.Length() >= frameOverhead )
+        {
+        TPtrC8 portPtr(
+            aData.Mid( KTCPOpenPrefix().Length(), KHexDecimalLength ) );
+
+        TLex8 portLexer( portPtr );
+        TUint port;
+        if ( portLexer.Val( port, EHex ) != KErrNone )
+            {
+            return KErrCorrupt;
+            }
+
+        // send parsed results
+        iObserver->OpenLocalTCPConnectionL( port );
+
+        aLength = frameOverhead;
+
+        return KErrNone;
+        }
+    return KErrNone;
+    }
+
+//  End of File