--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/telephonyprotocols/rawipnif/version1/src/IPTagHeader.cpp Tue Feb 02 01:41:59 2010 +0200
@@ -0,0 +1,101 @@
+// 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:
+// Implements the adding and removal of tag headers.
+//
+//
+
+/**
+ @file
+*/
+
+#ifdef RAWIP_HEADER_APPENDED_TO_PACKETS
+
+#include "IPTagHeader.h"
+#include "Constants.h"
+
+/**
+Default constructor.
+*/
+CIPTagHeader::CIPTagHeader(CBttLogger* aTheLogger)
+ : iTheLogger(aTheLogger)
+ {
+ iHeaderByte.SetMax();
+ iHeaderByte.FillZ();
+ }
+
+/**
+Default destructor.
+*/
+CIPTagHeader::~CIPTagHeader()
+ {
+ }
+
+/**
+This method will set the type of the IP header.
+
+@param aType IP header type
+*/
+void CIPTagHeader::SetType(TUint16 aType)
+ {
+ _LOG_L1C1(_L8("CIPTagHeader::SetType"));
+
+ iHeaderByte[0] = (TUint8)(aType>>8);
+ iHeaderByte[1] = (TUint8)(aType&0xff);
+ }
+
+/**
+This method will add a two-byte header to the send buffer detailing the
+protocol the aDes data packet is encoded with; in this case an IPv4
+header tag is appended.
+
+@param aDes the send buffer
+*/
+void CIPTagHeader::AddHeader(TDes8& aDes)
+ {
+ _LOG_L1C1(_L8("CIPTagHeader::AddHeader"));
+
+ // Add the protocol code as a header to the buffer
+ aDes.Insert(0,iHeaderByte);
+ }
+
+/**
+This method will remove the two-byte header from the received data,
+which specifies whether it is an IPv4/IPv6 packet. This information
+will be stored in protocolCode and returned to the caller.
+
+@param aPdu The received data packet
+@return The protocol header tag stripped from aPdu
+*/
+TUint16 CIPTagHeader::RemoveHeader(RMBufChain& aPdu)
+ {
+ _LOG_L1C1(_L8("CIPTagHeader::RemoveHeader"));
+
+ if (aPdu.Length() > KIPTagHeaderLength)
+ {
+ //Strip off the first part of the header
+ aPdu.TrimStart(1);
+ //Read the remaining part of the header as this contains the protocol code
+ TUint8* payloadPtr = aPdu.First()->Ptr();
+ TUint16 protocolCode = static_cast<TUint16>(*payloadPtr);
+ //Strip off the remaining protocol code part of the header
+
+ aPdu.TrimStart(1);
+
+ return protocolCode;
+ }
+
+ return 0;
+ }
+
+#endif // RAWIP_HEADER_APPENDED_TO_PACKETS