--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/realtimenetprots/sipfw/SIP/SigCompController/Common/src/compressinglogic.cpp	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,344 @@
+// Copyright (c) 2004-2009 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:
+// Name          : compressinglogic.cpp
+// Part of       : SIP SigComp Controller
+// Version       : SIP/3.0
+//
+
+
+
+#include <e32base.h>
+#include <in_sock.h>
+#include "compressinglogic.h"
+#include "sipmessage.h"
+#include "sipresponse.h"
+#include "siprequest.h"
+#include "siphostport.h"
+#include "sipviaheader.h"
+#include "sipuri.h"
+#include "siprouteheader.h"
+#include "sipaddress.h"
+#include "msiGcompowner.h"
+#include "sipcontactheader.h"
+#include "sipheaderbase.h"
+#include "sipstrings.h"
+#include "sipstrconsts.h"
+#include "uricontainer.h"
+#include "TSIPTransportParams.h"
+
+// -----------------------------------------------------------------------------
+// CSigCompCompressingLogic::NewL
+// -----------------------------------------------------------------------------
+//
+CSigCompCompressingLogic* CSigCompCompressingLogic::NewL(
+	MSigCompOwner& aSigCompOwner )
+	{
+	CSigCompCompressingLogic* self = NewLC( aSigCompOwner );
+	CleanupStack::Pop();
+	return self;
+	}
+
+// -----------------------------------------------------------------------------
+// CSigCompCompressingLogic::NewLC
+// -----------------------------------------------------------------------------
+//
+CSigCompCompressingLogic* CSigCompCompressingLogic::NewLC(
+	MSigCompOwner& aSigCompOwner )
+	{
+	CSigCompCompressingLogic* self =
+		new (ELeave) CSigCompCompressingLogic( aSigCompOwner );
+	CleanupStack::PushL( self );
+	return self;
+	}
+
+// -----------------------------------------------------------------------------
+// CSigCompCompressingLogic::EncodeL
+// -----------------------------------------------------------------------------
+//
+CBufBase* CSigCompCompressingLogic::EncodeL(
+    const TSIPTransportParams& aTransportParams,
+    CSIPRequest& aRequest,
+	const TInetAddr& aAddress,
+	TBool aStreambasedProtocol,
+	TBool& aCompressed )
+	{
+	if ( ShouldBeCompressL( aTransportParams, aRequest ) )
+		{
+		AddSigCompToContactsL( aRequest );
+		aCompressed = ETrue;
+		SetCompToTopViaL( aRequest );
+		
+		return iSigCompOwner.EncodeSipAndCompressL( aTransportParams,
+		                                            aRequest,
+													aAddress,
+													aStreambasedProtocol );
+		}
+	else
+		{
+		aCompressed = EFalse;
+		return iSigCompOwner.EncodeSipL( aRequest, aStreambasedProtocol );
+		}
+	}
+
+// -----------------------------------------------------------------------------
+// CSigCompCompressingLogic::EncodeL
+// -----------------------------------------------------------------------------
+//
+CBufBase* CSigCompCompressingLogic::EncodeL(
+    const TSIPTransportParams& aTransportParams,
+    CSIPResponse& aResponse,
+	const TInetAddr& aAddress,
+	TBool aStreambasedProtocol,
+	TBool& aCompressed )
+	{
+	if ( ShouldBeCompressL( aResponse ) )
+		{
+		AddSigCompToContactsL( aResponse );
+		aCompressed = ETrue;
+		
+		return iSigCompOwner.EncodeSipAndCompressL( aTransportParams,
+		                                            aResponse,
+													aAddress,
+													aStreambasedProtocol );
+		}
+	else
+		{
+		aCompressed = EFalse;
+		return iSigCompOwner.EncodeSipL( aResponse, aStreambasedProtocol );
+		}
+	}
+
+// -----------------------------------------------------------------------------
+// Destructor
+// -----------------------------------------------------------------------------
+//
+CSigCompCompressingLogic::~CSigCompCompressingLogic()
+	{
+
+	}
+
+// -----------------------------------------------------------------------------
+// Constructor
+// -----------------------------------------------------------------------------
+//
+CSigCompCompressingLogic::CSigCompCompressingLogic( MSigCompOwner& aSigCompOwner )
+	: iSigCompOwner( aSigCompOwner )
+	{
+	}
+
+// -----------------------------------------------------------------------------
+// CSigCompCompressingLogic::CompInVia
+// -----------------------------------------------------------------------------
+//
+TBool CSigCompCompressingLogic::CompInVia( CSIPMessage& aMessage )
+	{
+	CSIPViaHeader* viaheader;
+	viaheader = TopViaHeader( aMessage );
+	if ( viaheader )
+		{
+		if ( viaheader->HasParam( SIPStrings::StringF( SipStrConsts::EComp ) ) )
+			{
+			if ( viaheader->ParamValue(
+			        SIPStrings::StringF( SipStrConsts::EComp ) ) ==
+			        SIPStrings::StringF( SipStrConsts::ESigComp ) )
+				{
+				return ETrue;
+				}
+			}
+		}
+	return EFalse;
+	}
+
+// -----------------------------------------------------------------------------
+// CSigCompCompressingLogic::SetCompToTopVia
+// -----------------------------------------------------------------------------
+//
+void CSigCompCompressingLogic::SetCompToTopViaL( CSIPMessage& aMessage )
+	{
+	if ( !CompInVia( aMessage ) )
+		{
+		CSIPViaHeader* viaheader = TopViaHeader( aMessage );
+		if ( viaheader )
+			{
+			viaheader->SetParamL( SIPStrings::StringF( SipStrConsts::EComp ),
+			                      SIPStrings::StringF( SipStrConsts::ESigComp ) );
+			}
+		}
+	}
+
+// -----------------------------------------------------------------------------
+// CSigCompCompressingLogic::DeleteCompFromTopVia
+// -----------------------------------------------------------------------------
+//
+void CSigCompCompressingLogic::DeleteCompFromTopVia( CSIPMessage& aMessage )
+	{
+	if ( CompInVia( aMessage ) )
+		{
+		CSIPViaHeader* viaheader = TopViaHeader( aMessage );
+		viaheader->DeleteParam( SIPStrings::StringF( SipStrConsts::EComp ) );
+		}
+	}
+
+// -----------------------------------------------------------------------------
+// CSigCompCompressingLogic::TopViaHeader
+// -----------------------------------------------------------------------------
+//
+CSIPViaHeader* CSigCompCompressingLogic::TopViaHeader( CSIPMessage& aMessage )
+	{
+	if ( aMessage.HasHeader( 
+	        SIPStrings::StringF( SipStrConsts::EViaHeader ) ) )
+		{
+		TSglQueIter<CSIPHeaderBase> iter = 
+		    aMessage.Headers( SIPStrings::StringF( SipStrConsts::EViaHeader ) );
+		CSIPHeaderBase* header = iter;
+		return static_cast<CSIPViaHeader*>( header );
+		}
+
+	return 0;
+	}
+
+// -----------------------------------------------------------------------------
+// CSigCompCompressingLogic::HasSigCompParam
+// -----------------------------------------------------------------------------
+//
+TBool CSigCompCompressingLogic::HasSigCompParam( CSIPURI& aURI ) const
+	{
+	if ( aURI.HasParam( SIPStrings::StringF( SipStrConsts::EComp ) ) )
+		{
+		return aURI.ParamValue( SIPStrings::StringF( SipStrConsts::EComp ) ) ==
+			                    SIPStrings::StringF( SipStrConsts::ESigComp );
+		}
+	return EFalse;
+	}
+
+// -----------------------------------------------------------------------------
+// CSigCompCompressingLogic::SetCompEqualSigCompL
+// -----------------------------------------------------------------------------
+//
+void CSigCompCompressingLogic::SetCompEqualSigCompL( CSIPURI& aURI )
+	{
+	if ( !HasSigCompParam( aURI ) )
+		{
+		aURI.SetParamL( SIPStrings::StringF( SipStrConsts::EComp ),
+		                SIPStrings::StringF( SipStrConsts::ESigComp ) );
+		}
+	}
+
+// -----------------------------------------------------------------------------
+// CSigCompCompressingLogic::RemoveCompEqualSigComp
+// -----------------------------------------------------------------------------
+//
+void CSigCompCompressingLogic::RemoveCompEqualSigComp( CSIPURI& aURI )
+	{
+	aURI.DeleteParam( SIPStrings::StringF( SipStrConsts::EComp ) );
+	}
+
+// -----------------------------------------------------------------------------
+// CSigCompCompressingLogic::SipUri
+// -----------------------------------------------------------------------------
+//
+CSIPURI* CSigCompCompressingLogic::SigCompUriFromRequest( CSIPRequest& aRequest )
+	{
+	if ( aRequest.HasHeader( 
+	        SIPStrings::StringF( SipStrConsts::ERouteHeader ) ) )
+		{
+        TSglQueIter<CSIPHeaderBase> iter = 
+            aRequest.Headers(SIPStrings::StringF( SipStrConsts::ERouteHeader ) );
+
+		CSIPHeaderBase* header = iter;
+		CSIPRouteHeader* routeheader = static_cast<CSIPRouteHeader*>( header );
+		
+		if ( routeheader->SIPAddress().URI().IsSIPURI() &&
+		     routeheader->SIPAddress().URI().SIPURI()->HasParam(
+		        SIPStrings::StringF( SipStrConsts::ELr ) ) )
+			{
+			CSIPURI* sipuri = routeheader->SIPAddress().URI().SIPURI();
+			if ( HasSigCompParam( *sipuri ) )
+				{
+				return sipuri;
+				}
+			else
+				{
+				return 0;
+				}
+			}
+		}
+
+	if ( aRequest.RequestURI()->IsSIPURI() && 
+	     HasSigCompParam( *aRequest.RequestURI()->SIPURI() ) )
+		{
+		return aRequest.RequestURI()->SIPURI();
+		}
+	return 0;
+	}
+
+// -----------------------------------------------------------------------------
+// CSigCompCompressingLogic::ShouldBeCompressL
+// -----------------------------------------------------------------------------
+//
+TBool CSigCompCompressingLogic::ShouldBeCompressL(
+    const TSIPTransportParams& aTransportParams,
+    CSIPRequest& aRequest )
+	{
+	if ( iSigCompOwner.HasCompartmentUser( aTransportParams ) )
+	    {
+		return ETrue;
+    	}
+    	
+	DeleteCompFromTopVia( aRequest );
+	CSIPURI* sipuri = SigCompUriFromRequest( aRequest );
+	if ( sipuri )
+		{
+		RemoveCompEqualSigComp( *sipuri );
+		}
+	return EFalse;
+	}
+
+
+// -----------------------------------------------------------------------------
+// CSigCompCompressingLogic::ShouldBeCompressL
+// -----------------------------------------------------------------------------
+//
+TBool CSigCompCompressingLogic::ShouldBeCompressL( CSIPResponse& aResponse )
+	{
+	return CompInVia( aResponse );
+	}
+
+// -----------------------------------------------------------------------------
+// CSigCompCompressingLogic::AddSigCompToContactsL
+// -----------------------------------------------------------------------------
+//
+void CSigCompCompressingLogic::AddSigCompToContactsL( CSIPMessage& aMessage )
+	{
+	CSIPHeaderBase* headerbase;
+	CSIPContactHeader* header;
+	if ( aMessage.HasHeader( 
+	        SIPStrings::StringF( SipStrConsts::EContactHeader ) ) )
+		{
+		TSglQueIter<CSIPHeaderBase> headeriter =
+			aMessage.Headers( SIPStrings::StringF( SipStrConsts::EContactHeader ) );
+		headeriter.SetToFirst();
+		while ( ( headerbase = headeriter++ ) != NULL )
+			{
+			header = static_cast<CSIPContactHeader*>( headerbase );
+			if ( !header->Star() && 
+			     header->SIPAddress()->URI().IsSIPURI() &&
+				 iSigCompOwner.Match(
+				 header->SIPAddress()->URI().SIPURI()->HostPort().Host() ) )
+				{
+				SetCompEqualSigCompL( *header->SIPAddress()->URI().SIPURI() );
+				}
+			}
+		}
+	}