--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/voipplugins/dhcppositionprovider/src/dhcpdataresponsepacket.cpp	Wed Sep 01 12:29:57 2010 +0100
@@ -0,0 +1,91 @@
+/*
+* Copyright (c) 2007 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:  Handle and parse dhcp server response message.
+*
+*/
+
+#include "dhcppsylogging.h"          // For logging
+#include "dhcpconstants.h"
+#include "dhcpdataresponsepacket.h"
+
+const TInt KLengthOverMCookie = 236;
+const TInt KDhcpMessageEndOption = 255;
+
+// ======== MEMBER FUNCTIONS ========
+
+// ---------------------------------------------------------------------------
+// TDhcpDataResponsePacket
+// ---------------------------------------------------------------------------
+//
+TDhcpDataResponsePacket::TDhcpDataResponsePacket()
+    {
+    iXid = 0;
+    }
+
+// ---------------------------------------------------------------------------
+// Parses the location information part from the DHCPv4 Inform message,
+// Currently supported Options 123 and 99.
+// ---------------------------------------------------------------------------
+//
+TInt TDhcpDataResponsePacket::ParseDHCPAck ()
+    {
+    TRACESTRING( "TDhcpDataResponsePacket::ParseDHCPAck" );
+    TInt dataFound = KErrNotFound;
+    if (Length() > KLengthOverMCookie)
+        {
+        TPtrC8 magicCookie (KDhcpMagicCookie, sizeof(KDhcpMagicCookie));
+        //Locate the 'magic cookie' after which the option field begins
+        TInt offset = Find( magicCookie );
+        if (offset!=KErrNotFound)
+            {
+            offset += 4; // Skip the cookie
+            while (iBuffer[offset] != KDhcpMessageEndOption )
+                {
+                TInt messageOption = iBuffer[offset];
+                switch (messageOption)
+                    {
+                    case KDhcpMessageGeoSpatialCoordinates:
+                        {
+                        // Parse Option 123
+                        TUint8 dataLength = iBuffer[offset+1];
+                        iGeoConf = Mid( ( offset + 2 ), dataLength );
+                        offset++;
+                        offset += dataLength + 1;
+                        dataFound = KErrNone;
+                        }
+                        break;
+                    case KDhcpMessageCivicAddress:
+                        {
+                        // Parse Option 99
+                        // GeoConfCivic can be of variable length
+                        TUint8 dataLength = iBuffer[offset+1];
+                        iCivicAddress = Mid( ( offset + 2 ), dataLength );
+                        offset++;
+                        offset += dataLength + 1;
+                        dataFound = KErrNone;
+                        }
+                        break;
+                    default:
+                        {
+                        offset++;
+                        offset = offset + (iBuffer[offset]+1) ;
+                        }
+                        break;
+                    }
+                }
+            }
+        }
+    return dataFound;
+    }
+