Code cleaning.

1 files changed, 7 insertions, 8 deletions

diff --git a/Hsbot/Utils.hs b/Hsbot/Utils.hs
index 0b32fa6..b41fa52 100644
--- a/Hsbot/Utils.hs
+++ b/Hsbot/Utils.hs
@@ -19,6 +19,7 @@ import qualified Data.Certificate.KeyRSA as KeyRSA
 import Data.Certificate.PEM
 import Data.Certificate.X509
 import Data.List
+import Data.Maybe
 import Network.TLS
 import System.IO
 
@@ -33,7 +34,7 @@ addThreadIdToQuitMVar thrId = do
 delThreadIdFromQuitMVar :: ThreadId -> Env IO ()
 delThreadIdFromQuitMVar thrId = do
     threadIdsMv <- asks envThreadIdsMv
-    liftIO $ modifyMVar_ threadIdsMv (\l -> return $ delete thrId l)
+    liftIO $ modifyMVar_ threadIdsMv (return . delete thrId)
 
 setGlobalQuitMVar :: BotStatus -> Env IO ()
 setGlobalQuitMVar status = do
@@ -49,7 +50,7 @@ sendStr _ (Just ctx) msg = sendData ctx $ L.fromChunks [C.pack msg]
 sendStr handle Nothing msg = hPutStrLn handle msg
 
 -- TLS utils
-initTLSEnv :: TLSConfig -> IO (TLSParams)
+initTLSEnv :: TLSConfig -> IO TLSParams
 initTLSEnv ssl = do
     let certFile = sslCert ssl
         keyFile  = sslKey ssl
@@ -68,10 +69,8 @@ initTLSEnv ssl = do
 readCertificate :: FilePath -> IO X509
 readCertificate filepath = do
     content <- B.readFile filepath
-    let certdata = case parsePEMCert content of
-            Nothing -> error ("no valid certificate section")
-            Just x  -> x
-    let cert = case decodeCertificate $ L.fromChunks [certdata] of
+    let certdata = fromMaybe (error "no valid certificate section") $ parsePEMCert content
+        cert = case decodeCertificate $ L.fromChunks [certdata] of
             Left err -> error ("cannot decode certificate: " ++ err)
             Right x  -> x
     return cert
@@ -80,11 +79,11 @@ readPrivateKey :: FilePath -> IO PrivateKey
 readPrivateKey filepath = do
     content <- B.readFile filepath
     let pkdata = case parsePEMKeyRSA content of
-            Nothing -> error ("no valid RSA key section")
+            Nothing -> error "no valid RSA key section"
             Just x  -> L.fromChunks [x]
     let pk = case KeyRSA.decodePrivate pkdata of
             Left err -> error ("cannot decode key: " ++ err)
-            Right x  -> PrivRSA $ RSA.PrivateKey
+            Right x  -> PrivRSA RSA.PrivateKey
                 { RSA.private_sz   = fromIntegral $ KeyRSA.lenmodulus x
                 , RSA.private_n    = KeyRSA.modulus x
                 , RSA.private_d    = KeyRSA.private_exponant x