How to find the active network interface

[erebus]

Hello,

I have written a small script to find all the network interfaces on a system:

Global $nicid[11], $nicdesc[11], $nicdhcpip[11], $nicstaticip[11]

For $i = 1 To 10 ; Get the first 10 cards on the system
    $nicid[$i] = RegEnumKey("HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\NetworkCards", $i)
    $nicdesc[$i] = RegRead("HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\NetworkCards\" & $nicid[$i], "Description")
    $nicid[$i] = RegRead("HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\NetworkCards\" & $nicid[$i], "ServiceName")
    $nicdhcpip[$i] = RegRead("HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\" & $nicid[$i], "DhcpIPAddress")
    $nicstaticip[$i] = RegRead("HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\" & $nicid[$i], "IPAddress")
    $nicid[0] = $i - 1
    If @error <> 0 then ExitLoop
Next

For $i = 1 To $nicid[0]
    MsgBox(64, "FlipGate v0.0 - http://www.unicode.gr", "Total cards found: " & $nicid[0] & @LF & @LF & "NIC: " & $nicdesc[$i] & @LF & "DHCP IP: " & $nicdhcpip[$i] & @LF & "Static IP: " & $nicstaticip)
Next

The question is, how can I find the ACTIVE(s) network interface(s) on the system?

Either using registry or WMI, DLL whatever...

Edited February 1, 2007 by erebus

[ptrex]

@erebus

This will list all your adapters :

expandcollapse popup

; Generated by AutoIt Scriptomatic

$wbemFlagReturnImmediately = 0x10
$wbemFlagForwardOnly = 0x20
$colItems = ""
$strComputer = "localhost"

$Output=""
$Output = $Output & "Computer: " & $strComputer  & @CRLF
$Output = $Output & "==========================================" & @CRLF
$objWMIService = ObjGet("winmgmts:\\" & $strComputer & "\root\CIMV2")
$colItems = $objWMIService.ExecQuery("SELECT * FROM Win32_NetworkAdapter", "WQL", _
                                          $wbemFlagReturnImmediately + $wbemFlagForwardOnly)

If IsObj($colItems) then
   For $objItem In $colItems
      $Output = $Output & "AdapterType: " & $objItem.AdapterType & @CRLF
      $Output = $Output & "AdapterTypeId: " & $objItem.AdapterTypeId & @CRLF
      $Output = $Output & "AutoSense: " & $objItem.AutoSense & @CRLF
      $Output = $Output & "Availability: " & $objItem.Availability & @CRLF
      $Output = $Output & "Caption: " & $objItem.Caption & @CRLF
      $Output = $Output & "ConfigManagerErrorCode: " & $objItem.ConfigManagerErrorCode & @CRLF
      $Output = $Output & "ConfigManagerUserConfig: " & $objItem.ConfigManagerUserConfig & @CRLF
      $Output = $Output & "CreationClassName: " & $objItem.CreationClassName & @CRLF
      $Output = $Output & "Description: " & $objItem.Description & @CRLF
      $Output = $Output & "DeviceID: " & $objItem.DeviceID & @CRLF
      $Output = $Output & "ErrorCleared: " & $objItem.ErrorCleared & @CRLF
      $Output = $Output & "ErrorDescription: " & $objItem.ErrorDescription & @CRLF
      $Output = $Output & "Index: " & $objItem.Index & @CRLF
      $Output = $Output & "InstallDate: " & WMIDateStringToDate($objItem.InstallDate) & @CRLF
      $Output = $Output & "Installed: " & $objItem.Installed & @CRLF
      $Output = $Output & "LastErrorCode: " & $objItem.LastErrorCode & @CRLF
      $Output = $Output & "MACAddress: " & $objItem.MACAddress & @CRLF
      $Output = $Output & "Manufacturer: " & $objItem.Manufacturer & @CRLF
      $Output = $Output & "MaxNumberControlled: " & $objItem.MaxNumberControlled & @CRLF
      $Output = $Output & "MaxSpeed: " & $objItem.MaxSpeed & @CRLF
      $Output = $Output & "Name: " & $objItem.Name & @CRLF
      $Output = $Output & "NetConnectionID: " & $objItem.NetConnectionID & @CRLF
      $Output = $Output & "NetConnectionStatus: " & $objItem.NetConnectionStatus & @CRLF
      $strNetworkAddresses = $objItem.NetworkAddresses(0)
      $Output = $Output & "NetworkAddresses: " & $strNetworkAddresses & @CRLF
      $Output = $Output & "PermanentAddress: " & $objItem.PermanentAddress & @CRLF
      $Output = $Output & "PNPDeviceID: " & $objItem.PNPDeviceID & @CRLF
      $strPowerManagementCapabilities = $objItem.PowerManagementCapabilities(0)
      $Output = $Output & "PowerManagementCapabilities: " & $strPowerManagementCapabilities & @CRLF
      $Output = $Output & "PowerManagementSupported: " & $objItem.PowerManagementSupported & @CRLF
      $Output = $Output & "ProductName: " & $objItem.ProductName & @CRLF
      $Output = $Output & "ServiceName: " & $objItem.ServiceName & @CRLF
      $Output = $Output & "Speed: " & $objItem.Speed & @CRLF
      $Output = $Output & "Status: " & $objItem.Status & @CRLF
      $Output = $Output & "StatusInfo: " & $objItem.StatusInfo & @CRLF
      $Output = $Output & "SystemCreationClassName: " & $objItem.SystemCreationClassName & @CRLF
      $Output = $Output & "SystemName: " & $objItem.SystemName & @CRLF
      $Output = $Output & "TimeOfLastReset: " & WMIDateStringToDate($objItem.TimeOfLastReset) & @CRLF
      if Msgbox(1,"WMI Output",$Output) = 2 then ExitLoop
      $Output=""
   Next
Else
   Msgbox(0,"WMI Output","No WMI Objects Found for class: " & "Win32_NetworkAdapter" )
Endif


Func WMIDateStringToDate($dtmDate)

    Return (StringMid($dtmDate, 5, 2) & "/" & _
    StringMid($dtmDate, 7, 2) & "/" & StringLeft($dtmDate, 4) _
    & " " & StringMid($dtmDate, 9, 2) & ":" & StringMid($dtmDate, 11, 2) & ":" & StringMid($dtmDate,13, 2))
EndFunc

And this will show all information about the adaptors. And if I remember well check the output called "NetConnectionStatus" = 2

regards

ptrex

[FreeRider]

Hello

ptrex is correct.... "NetConnectionStatus" = 2 means the adapter is active but sometimes this status is also used when the adapter is acquiring network (not yet connected).

So in most cases you wont have any poblem but just be aware you could.

[oneLess]

Hello

ptrex is correct.... "NetConnectionStatus" = 2 means the adapter is active but sometimes this status is also used when the adapter is acquiring network (not yet connected).

So in most cases you wont have any poblem but just be aware you could.

during the time when the adapter is acquiring network

"NetConnectionStatus" is always 2 as value but the IP is 127.0.0.1

[at least here]