Friday, March 6, 2015

SCCM Task Sequence User Verification

We know that Config Manager's Task Sequences run with a system account and can only be advertised to Device collections.

What if we wanted only certain people to have permission to re-image their computer?

This script will record the logged in username via wmi as a Task Variable.
If that account is a member of a specific domain group then the 'ValidUser' Task Variable will be set as True.

You can then use that 'ValidUser' Task Variable to allow groups or other commands/applications to run.



To test the sequence with the msgbox dialogs you will need the ServiceUI.exe file from the Microsoft Development kit.

'Find Logged in user
'Version 1.60
on error resume next
Dim objNetwork, objDomain, oTaskSequence
'msgbox "Testing"
'Create Objects
Set objNetwork = CreateObject("Wscript.Network")
Set objDomain = GetObject("LDAP://RootDSE")
Set oTaskSequence = CreateObject ("Microsoft.SMS.TSEnvironment")

' Obtain user information.
'strUserName = objNetwork.UserName
strcomputer = "."

Set objWMI = GetObject("winmgmts:" & "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2") 
Set colSessions = objWMI.ExecQuery ("Select * from Win32_ComputerSystem",,48) 
For Each objItem in colSessions 
if objItem.Username <> "" then
strUserName = Replace(Lcase(objItem.UserName),"prairiesouth","")
oTaskSequence("UserName") = replace(strUserName,chr(92),"")
'msgbox strUserName
else
strUserName = objNetwork.UserName
end if
next

If not lcase(strUserName) = "system" then
'Verifies not the System account.
strDomain = objDomain.Get("dnsHostName")
Set objUser = GetObject("WinNT://" & strDomain & "/" & strUserName)
For Each strGroup in objUser.Groups
If Lcase(strGroup.Name) = "help desk end users" or Lcase(strGroup.Name) = "information technology department" then
strValid = 1
oTaskSequence("UserGroup") = strGroup.Name
'msgbox strGroup.Name
exit for
end if
Next
else
strValid = 0
end if

If strValid = 1 then
oTaskSequence("ValidUser") = "True"
'msgbox strValid
Else
oTaskSequence("ValidUser") = "False"
'msgbox strValid
end if


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