Rakka.Resource.Users

[Rakka.git] / Rakka / Authorization.hs

diff --git a/Rakka/Authorization.hs b/Rakka/Authorization.hs
index 0f865c3dee08b7be0baf710c5a6216d23d41a879..be7f490e935b0f4e491069cbd1736e8c42298ed6 100644 (file)
--- a/Rakka/Authorization.hs
+++ b/Rakka/Authorization.hs
@@ -2,6 +2,9 @@ module Rakka.Authorization
     ( AuthDB
     , mkAuthDB
     , isValidPair
+    , getUserList
+    , addUser
+    , delUser
     )
     where
 
@@ -51,6 +54,36 @@ isValidPair adb name pass
                                   return (M.lookup name m == Just hash)
 
 
+getUserList :: MonadIO m => AuthDB -> m [String]
+getUserList adb
+    = liftIO $
+      atomically $
+      do m <- readTVar (adbUserMap adb)
+        return (M.keys m)
+
+
+addUser :: MonadIO m => AuthDB -> String -> String -> m ()
+addUser adb name pass
+    = liftIO $
+      do sha1 <- return . fromJust =<< getDigestByName "SHA1"
+        let hash = digestBS sha1 $ B.pack $ UTF8.encode pass
+        m <- atomically $ do m <- readTVar (adbUserMap adb)
+                             let m' = M.insert name hash m
+                             writeTVar (adbUserMap adb) m'
+                             return m'
+        saveUserMap (adbFilePath adb) m
+
+
+delUser :: MonadIO m => AuthDB -> String -> m ()
+delUser adb name
+    = liftIO $
+      do m <- atomically $ do m <- readTVar (adbUserMap adb)
+                             let m' = M.delete name m
+                             writeTVar (adbUserMap adb) m'
+                             return m'
+        saveUserMap (adbFilePath adb) m
+
+
 loadUserMap :: FilePath -> IO UserMap
 loadUserMap path
     = do exist <- doesFileExist path
@@ -74,3 +107,12 @@ loadUserMap path
                         in
                           M.singleton name hash
           | otherwise = m
+
+
+saveUserMap :: FilePath -> UserMap -> IO ()
+saveUserMap path m
+    = writeFile path $ serializeStringPairs $ map encodePair $ M.toList m
+    where
+    encodePair :: (String, String) -> (String, String)
+    encodePair (name, hash)
+       = (UTF8.encodeString name, encodeBase64 hash)