--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tcpiputils/dhcp/NetCfgExtnDhcp/inc/NetCfgExtnDhcpMsg.h	Tue Jan 26 15:23:49 2010 +0200
@@ -0,0 +1,185 @@
+// Copyright (c) 2003-2009 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:
+// NetCfgExtDhcpMsg.h
+// DHCPv4/v6 specific control & IoCtl commands & structures
+// 
+//
+
+/**
+ @internalComponent
+*/
+
+#if !defined (__NET_CFG_EXTN_DHCP_MSG_H__)
+#define __NET_CFG_EXTN_DHCP_MSG_H__
+
+#include <e32base.h>
+
+//-- for some DHCPv4 constants and data structures definition
+#include <comms-infras/es_config.h>
+#include <nifman.h>
+
+
+/**
+    Specific options for getting raw DHCP data
+    @internalComponent
+*/
+const TUint KConnGetDhcp4RawOptionData = KConnGetDhcpRawOptionData;    //-- DHCPv4 specific alias
+const TUint KConnGetDhcp6RawOptionData = KConnGetDhcpRawOptionData;    //-- DHCPv6 specific alias
+
+
+/**
+    Just a DHCPv4 specific alias, actually is defined in es_config.h
+    @internalComponent
+*/
+typedef TDhcpRawOptionDataPckg TDhcp4RawOptionDataPckg;
+
+
+/**
+    TDhcp6RawOptionDataPckg - provide simple interface for dealing with DHCPv6 raw option data.
+    IPv4 version is defined in es_config.h
+    @internalComponent
+*/
+class TDhcp6RawOptionDataPckg : public TPckgDes<TUint16>
+	{
+public:
+ 	 /** @param aDes User buffer to hold data fetched. */
+     TDhcp6RawOptionDataPckg(TDes8& aDes)  :
+		TPckgDes<TUint16>(aDes)
+		{
+		}
+
+	 /**
+  	  SetOpCode. Make sure the buffer is at least 8 bytes long.
+  	  @param aOpCode Desired DHCP Raw option.
+	 */
+	 inline void SetOpCode(TUint16 aOpCode)
+        {
+		const TUint opCodeSize = sizeof(aOpCode);
+        TBuf8<opCodeSize> buf;
+		buf.Copy(reinterpret_cast<const TUint8*>(&aOpCode), opCodeSize);
+        iDes->Replace(0,opCodeSize,buf);
+		}
+
+	inline TUint16 OpCode()
+		{
+		return *(reinterpret_cast<const TUint16*>(iDes->Ptr()));
+		}
+	};
+
+#ifdef SYMBIAN_TCPIPDHCP_UPDATE
+class TDhcp6RawOptionMultipleDataPckg :  public TPckgDes<TUint16>
+/**
+ * For use when an application wants to access multiple raw parameter options.
+ * The descriptor contains a list of OpCodes. After the RConnection::Ioctl() call has 
+ * completed, the descriptor will contain the number of parameters in the first byte 
+ * followed by parameter opcode, length and data for each parameter option.
+ *	
+ *	@code
+ *     Message	
+ *	     -------------------------------   
+ *		|	|	|	|		|
+ *		|op1|op2|-	|		|
+ *		 -------------------------------
+ * @endcode
+ * @publishedPartner
+ * @released
+*/
+	{
+public:
+	TDhcp6RawOptionMultipleDataPckg(TDes8& aDes)  :
+		TPckgDes<TUint16>(aDes)
+	//Constructor for the class. Pushing Buffer containing number
+	//of OpCode in iDes.  
+		{
+		//Setting data length of descriptor as NULL
+		iDes->SetLength(NULL);
+		}
+
+	void AddRawOptionCodeL(const TUint16 aOpCode)
+	/**
+	 * Sets parameters one at a time.
+	 * The only thing the application provides is the OpCode.
+	 * @param aOpCode The OpCode supplied by the user.
+	*/
+		{
+		//  ---------------------
+		// |      |		|..........................
+		// |OP1   |	OP2	|
+		// |      |     |.......................
+		// ----------------------
+		//Data will be appended at the end of the buffer. Length of buffer will indicate
+		//number of opcodes as every thing is 1 byte
+		iDes->Append(aOpCode);	
+		}
+	
+	TInt GetRawParameterData(const TUint16 aOpCode ,TPtrC8& aDes)
+	   	/**
+	   	 * Returns the data portion corresponding to the supplied opcode.  
+		 * It's only meaningful to call this after an Ioctl() call.
+		 *
+	   	 * @code
+	   	 *  ---------------------------------------------------
+	   	 * |No. of |      |Data  |      |       |Data  |       |
+	   	 * |opcodes| OP1  |Length| Data |  OP2  |Length| Data  |
+	   	 * |       |      |      |      |       |      |       |
+	   	 *  --------------------------------------------------- 
+	   	 * @endcode
+	   	 *
+	   	 * @param aOpCode The opcode passed by the user.
+	   	 * @param aDes On return, it contains the message opcode data.
+	   	 * @return KErrNone if aOpCode is found, else KErrNotFound 
+	   	*/
+		{
+		TUint16 opCodeIterated=0;
+		TUint16 opCodeIterator= 2;
+		const TUint16 sizeOfOpcodeAndDataBytes = 3;
+		const TUint16 sizeOfLengthByte = 2;
+				
+		//extracting number of opcodes. First byte of Descriptor will contain number of bytes
+		TUint16 numberOfOpcodes  = *(iDes->Ptr());
+		//taking pointer to base location of aDes.
+		const TUint8* desBasePtr=iDes->Ptr();
+		
+		//While loop true conditions are opCodeFound if Particular opcode is extracted or All opcode in 
+		//descriptor are iterated and OpCode is not found.
+		while( opCodeIterated < numberOfOpcodes)
+			{
+			//If opcode is found then come out of loop and TPtr will be passed in the descriptor. Pointer is returned to the 
+			//start byte of data for that particular Opcode with length of the data.
+ 			if(aOpCode==*(desBasePtr+opCodeIterator))
+				{
+				TInt dataLength = *(desBasePtr+(opCodeIterator+sizeOfLengthByte));
+  				aDes.Set(reinterpret_cast<const TUint8*>(desBasePtr+opCodeIterator+sizeOfOpcodeAndDataBytes),dataLength);	
+				return KErrNone;
+				}
+		
+				//Opcode iterator is iterated in such a way that it will always point to opcode location.
+				opCodeIterator += *(desBasePtr+(opCodeIterator+sizeOfLengthByte))+4;
+				opCodeIterated++;
+			}//while loop.
+		return KErrNotFound;
+		}
+	
+	TUint16 NumOfOptionRetrieved()
+	/**
+	 * Gets the number of opcode data buffers.
+	 * It's only meaningful to call this after an Ioctl() call.
+	 * @return The number of opcode data buffers.
+	 */
+		{
+		return *(iDes->Ptr());
+		}
+	};
+#endif //SYMBIAN_TCPIPDHCP_UPDATE
+#endif