Archived:Retrieving WLAN MAC address using Symbian C++

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Archived: This article is archived because it is not considered relevant for third-party developers creating commercial solutions today. If you think this article is still relevant, let us know by adding the template {{ReviewForRemovalFromArchive|user=~~~~|write your reason here}}.

Article Metadata

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Compatibility

Platform(s): S60 3rd Edition, S60 3rd Edition FP1

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Article

Keywords: KSoInetEnumInterfaces

Created: User:Technical writer 2 (November 22, 2006, updated October 3, 2008)

Last edited: hamishwillee (14 Jun 2012)

Overview

Retrieving WLAN MAC address

Description

The following code demonstrates how to list all network interfaces and retrieve the hardware (MAC) address for a WLAN interface if one is found.

#include <in_sock.h>    // link against insock.lib, esock.lib
    // Connect to the socket server
    RSocketServ socketServ;
    User::LeaveIfError(socketServ.Connect());
    CleanupClosePushL(socketServ);
    // Open a socket
    RSocket socket;
    User::LeaveIfError(socket.Open(socketServ,
                         KAfInet,
                         KSockStream,
                         KProtocolInetTcp));                    
    CleanupClosePushL(socket);
    // Start enumerating the interfaces
    TPckgBuf<TSoInetInterfaceInfo> info;
    socket.SetOpt(KSoInetEnumInterfaces, KSolInetIfCtrl);
 
    TBuf<32> macAddr;
 
    while(socket.GetOpt(KSoInetNextInterface, KSolInetIfCtrl, info) == KErrNone)
        {
        if(info().iName.FindF(_L("Wlan")) == KErrNotFound)
            {
            continue;
            }
 
        macAddr.Zero();
    for( TUint i = sizeof(SSockAddr) ; i < sizeof(SSockAddr) + 6 ; i++ )
        {
    if(i < (TUint)info().iHwAddr.Length())
        {
    macAddr.AppendFormat(_L("%02X:"), info().iHwAddr[i]);
        }
    }
 
        if(macAddr.Length()) // remove trailing ’:’
            {
            macAddr.Delete(macAddr.Length()-1, 1);       
            }
        }
    CleanupStack::PopAndDestroy(2); // socket, socketServ
 
    // macAddr now contains the WLAN MAC address,
    // (empty if no WLAN interface is found)

Alternative method:

The WLAN MAC address can be retrieved using above code only when the phone is connected to WLAN.

WLAN Info API, part of the Extensions plug-in package for S60 3rd Edition, Feature Pack 1 SDK, contains Publish & Subscribe keys with a MAC address for the WLAN interface. Using these methods, the MAC address can be retrieved even when WLAN is turned off.

const TUid KPSUidWlan = { 0x101f8ec5 };

const TUint KPSWlanMacAddress = 0x00000001;

const RProperty::TType KPSWlanMacAddressType = RProperty::EByteArray;

Displaying WLAN MAC address in phone idle screen:

The WLAN MAC address can be displayed by entering the following sequence in the idle screen:

*#62209526#  (*#MAC0WLAN#)