propellor spin

1 files changed, 31 insertions, 0 deletions

diff --git a/Property/Sudo.hs b/Property/Sudo.hs
new file mode 100644
index 00000000..175f453a
--- /dev/null
+++ b/Property/Sudo.hs
@@ -0,0 +1,31 @@
+module Property.Sudo where
+
+import Data.List
+
+import Common
+import Property.File
+import qualified Property.Apt as Apt
+import 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 :: UserName -> Property
+enabledFor user = Property desc go `requires` Apt.installed ["sudo"]
+  where
+	go = do
+		locked <- isLockedPassword user
+		ensureProperty $
+			fileProperty desc
+				(modify locked . filter (wanted locked))
+				"/etc/sudoers"
+	desc = user ++ " is sudoer"
+	sudobaseline = user ++ " ALL=(ALL:ALL)"
+	sudoline True = sudobaseline ++ " NOPASSWD:ALL"
+	sudoline False = sudobaseline
+	wanted locked l
+		| not (sudobaseline `isPrefixOf` l) = True
+		| "NOPASSWD" `isInfixOf` l = locked
+		| otherwise = True
+ 	modify locked ls
+		| sudoline locked `elem` ls = ls
+		| otherwise = ls ++ [sudoline locked]