propellor/src/Propellor/Property/Sudo.hs

33 lines
1013 B
Haskell

module Propellor.Property.Sudo where
import Data.List
import Propellor
import Propellor.Property.File
import qualified Propellor.Property.Apt as Apt
import Propellor.Property.User
-- | Allows a user to sudo. If the user has a password, sudo is configured
-- to require it. If not, NOPASSWORD is enabled for the user.
enabledFor :: User -> Property NoInfo
enabledFor user@(User u) = property desc go `requires` Apt.installed ["sudo"]
where
go = do
locked <- liftIO $ isLockedPassword user
ensureProperty $
fileProperty desc
(modify locked . filter (wanted locked))
"/etc/sudoers"
desc = u ++ " is sudoer"
sudobaseline = u ++ " ALL=(ALL:ALL)"
sudoline True = sudobaseline ++ " NOPASSWD:ALL"
sudoline False = sudobaseline ++ " ALL"
wanted locked l
-- TOOD: Full sudoers file format parse..
| not (sudobaseline `isPrefixOf` l) = True
| "NOPASSWD" `isInfixOf` l = locked
| otherwise = True
modify locked ls
| sudoline locked `elem` ls = ls
| otherwise = ls ++ [sudoline locked]