[python-win32] Problems with Python+COM and XP Firewall Manager

[Robert Olson]

Hi -

I'm trying to use python+COM to poke at the WinXP firewall configs. I'm 
looking at the VBScript sample available here:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ics/ics/enabling_internet_connection_firewall_vbscript_.asp

(aka http://snurl.com/qu2 ) and attempting to emulate it in Python. I used 
makepy to create a module for the ICS library:

makepy -o hnet.py \windows\system\hnetcfg.dll

I can create the INetSharingManager obj just fine, and invoke its toplevel 
methods, but can't use the objects returned from the enumeration.

here's the test code:

import pythoncom
import hnet

n = hnet.NetSharingManager()
print "n=", n
print "sharingInstalled=", n.SharingInstalled

col = n.EnumEveryConnection

print "Col=%s count=%s" % (col, col.Count)

item = col[0]
print "Item is %s type=%s" % (item, type(item))

iidstr = hnet.VTablesNamesToCLSIDMap['INetConnection']
iid = pythoncom.MakeIID(iidstr)
print "iidstr=%s iid=%s" %( iidstr, iid)

try:
     item2 = item.QueryInterface(iid)
     print "item2=", item2
except Exception, e:
     print "QueryInterface failed: ", e

try:
     con = n.INetSharingConfigurationForINetConnection(item)
     print "con=", con
except Exception, e:
     print "INetSharingConfigurationForINetConnection failed: ", e

And here's the output:

C:\temp>python thnet.py
n= <win32com.gen_py.NetCon 1.0 Type Library.NetSharingManager>
sharingInstalled= 1
Col=<win32com.gen_py.NetCon 1.0 Type 
Library.INetSharingEveryConnectionCollection> count=2
Item is <PyIUnknown at 0x8cb40c with obj at 0x167408> type=<type 'PyIUnknown'>
iidstr={C08956A1-1CD3-11D1-B1C5-00805FC1270E} 
iid={C08956A1-1CD3-11D1-B1C5-00805FC1270E}
QueryInterface failed:  There is no interface object registered that 
supports this IID
INetSharingConfigurationForINetConnection failed:  (-2147467262, 'No such 
interface supported', None, None)

I've poked a little at using QueryInterface to turn the item from the 
collection into a INetConnection but haven't been able to get that to fly. 
I'm using ActiveState Python which doesn't have CastTo; however, I looked 
at the source to CastTo in CVS and it looks like it wouldn't work anyway, 
as the item in the connection doesn't have __class__ attribute as used by 
CastTo.

I find that interface in the registry:

HKEY_CLASSES_ROOT\Interface\{C08956A1-1CD3-11D1-B1C5-00805FC1270E}

Does anyone have any ideas?

thanks,
--bob