How do you query for WMI namespaces?

Question

How do you query for WMI namespaces?

So I know about WMI namespaces because I read that they exits and I know I can connect to say:

root\cimv2

My question is what if I didn't know what namespaces were there, how would I go about querying for the available namespaces?

I just sort of want to go exploring the WMI and not have to look up each namespace.

I'm using WBEMtest, but I'll take anything, .NET, winapi.h, what have you.

Answer 1

I understand that you got your answer but wanted to show how easy it is in PowerShell to get a list of namespaces:

Get-WMIObject -namespace "root" -class "__Namespace" | Select Name

Answer 2

To enumerate all the namespaces, you must first connect to the root namespace, query for all the __NAMESPACE instances, and for each instance recursively repeat this process.

check these samples

Delphi

procedure  GetListWMINameSpaces(const RootNameSpace:String;const List :TStrings;ReportException:Boolean=True);//recursive function
var
  objSWbemLocator : OleVariant;
  objWMIService   : OleVariant;
  colItems        : OLEVariant;
  colItem         : OLEVariant;
  oEnum           : IEnumvariant;
  iValue          : LongWord;
  sValue          : string;
begin
 try
  objSWbemLocator := CreateOleObject('WbemScripting.SWbemLocator');
  objWMIService   := objSWbemLocator.ConnectServer(wbemLocalhost, RootNameSpace, '', '');
  colItems        := objWMIService.InstancesOf('__NAMESPACE');
  oEnum           := IUnknown(colItems._NewEnum) as IEnumVariant;
  while oEnum.Next(1, colItem, iValue) = 0 do
  begin
    sValue:=VarStrNull(colItem.Name);
    colItem:=Unassigned;
    List.Add(RootNameSpace+'\'+sValue);
    GetListWMINameSpaces(RootNameSpace+'\'+sValue,List);//recursive
  end;
 except
     if ReportException then
     raise;
 end;
end;

VbScript

strComputer = "."
Call EnumNameSpaces("root")

Sub EnumNameSpaces(strNameSpace)
    WScript.Echo strNameSpace
    Set objWMIService = GetObject("winmgmts:\\" & strComputer & _
        "\" & strNameSpace)
    Set colNameSpaces = objWMIService.InstancesOf("__NAMESPACE")
    For Each objNameSpace In colNameSpaces
        Call EnumNameSpaces(strNameSpace & "\" & objNameSpace.Name)
    Next
End Sub