DCOM status

[AH]

Could someone tell what is the current status of DCOM interface in samba4?
I am interested in the part of DCOM allowing access to objects on Win 
machines from samba, especially WMI.
If writing neccesary idl files will be enough? Or there should be 
additional work?

And question about legality: Can I legally use in samba original idl 
files from MS? or headers generated by midl?

Andrzej Hajda