words )
import Data.List ((\\))
import Data.String.Utils (join)
-
import Network.DNS (
Domain,
FileOrNumericHost(RCHostName),
defaultResolvConf,
makeResolvSeed,
withResolver )
+import System.Exit (ExitCode(..), exitWith)
+import System.IO (hPutStrLn, stderr)
+
import CommandLine (Args(..), get_args)
import DNS (
LookupResult,
lookupMX',
lookupNS',
- normalize )
+ normalize,
+ resolve_address )
+import ExitCodes (exit_bad_server)
report :: (Domain, Maybe [Domain]) -> IO ()
report (d, Nothing) =
let nrml_domains = map normalize raw_domains
let nrml_delegates = map normalize raw_delegates
- let rc = case (server cfg) of
- Nothing -> defaultResolvConf
- Just s -> defaultResolvConf { resolvInfo = RCHostName s }
+ rc <- case (server cfg) of
+ Nothing -> return defaultResolvConf
+ Just s -> do
+ s' <- resolve_address s
+ case s' of
+ Nothing -> do
+ hPutStrLn stderr ("Bad DNS server or lookup error: " ++ s)
+ exitWith (ExitFailure exit_bad_server)
+ Just s'' ->
+ return $ defaultResolvConf { resolvInfo =
+ RCHostName (show s'') }
rs <- makeResolvSeed rc