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From: Jeff Lynch on 6 Jul 2008 00:40
Been busy cleaning up some code and i noticed that one of my scripts
wasn't using Option Explicit. Now i am no guru but i figure it's always
a better option to use that setting. Anyway here is the Scripts
Intention and the problem will follow:
Script Purpose:
Kill Hung service whether local or remote.
Problem:
When I enable 'Use Option Explicit the script breaks and will no longer
kill a running service on the local computer.

Any advise on why option explicit breaks the code would be appreciated

Script:

'Option Explicit
'Dim strServerName,strComputerName,strServiceName,strWQL
KillService "usa-jlynch","Google Updater Service"
'#######################################################################
#######
' KillService -Kills service by matching Service to ProcessID to then
Terminate
'
'example:
' KillProcess "usa-jlynch","Ad-Aware 2007 Service"
' **Problem with Option Explicit, if turned on Local Services will not
be killed
'#######################################################################
#######
Function KillService(strServername,strServiceName)
Dim objItem, objService, objProcess,strServiceList,strProcessKill
Dim
colListOfServices,colProcessList,strQuery,strServiceProcessID,strProcess
Name, intRC
strQuery="SELECT * FROM Win32_Service WHERE DisplayName = '" &
strServiceName & "'"
On Error Resume Next
Set colListOfServices= objWMI(strServerName,strQuery)
If err.number=0 Then
err.clear
For Each objService in colListOfServices
strServiceProcessID = objService.ProcessId
Next
Wscript.Echo "The Process ID for "&strServiceName&" is :
"&strServiceProcessID
If strServiceProcessID>0 Then
'now to do the termination of the service's matching process
strQuery = "Select * from Win32_Process Where ProcessID= '" &
strServiceProcessID & "'" 'define WMI query
Set colProcessList=objWMI(strServerName, strQuery)'retrieve WMI
collection by calling the objWMI function
'wscript.echo err.number
If err.number=0 Then
For Each objWMIProcess In colProcessList
intRC = objWMIProcess.Terminate()
wscript.echo err.number
Next
Select Case intRC
Case 0 Wscript.Echo " Terminated"
Case 2 Wscript.Echo " Access denied"
Case 3 Wscript.Echo " Insufficient privilege"
Case 9 Wscript.Echo " Path not found"
Case 21 Wscript.Echo " Invalid parameter"
Case Else Wscript.Echo " Unable to terminate for undetermined
reason"
End Select
End If
Else
wscript.echo "Invalide Process ID or Process terminated without
intervention"
End If
End If
End Function


Function objWMI(strComputer, strWQL)
Dim wmiNS, objWMIService
wmiNS = "\root\cimv2"
On Error Resume Next
Set objWMIService=GetObject("winmgmts:" _
&"{impersonationLevel=impersonate}!\\" _
& strComputer & wmiNS)
objWMIService.Security_.ImpersonationLevel = 3
objWMIService.Security_.privileges.addasstring "SeDebugPrivilege",
True
Select Case Err.Number
Case 0
' Success
Set objWMI= objWMIService.ExecQuery(strWQL)
Case 70
' Run-time error '70': Permission denied
wscript.echo "Access Denied connecting to "&strComputer
'Set objWMI="NA"
Case 424
' The remote server machine does not exist or is unavailable
wscript.echo "The server " &UCase(strComputer)& " is unavailable or
does not exist!"
Case 462
' The remote server machine does not exist or is unavailable
wscript.echo "The server " &UCase(strComputer)& " is unavailable or
does not exist!"
Case Else
wscript.echo "Unknown error connecting to server
"&UCase(strComputer)
End Select
On Error GoTo 0
Set objWMIService= Nothing
End Function



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