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check size of cookie file #12

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6 changes: 5 additions & 1 deletion src/Network/Anonymous/Tor/Protocol.hs
Original file line number Diff line number Diff line change
Expand Up @@ -233,7 +233,11 @@ authenticate s = do

readCookie :: Maybe FilePath -> IO HS.HexString
readCookie Nothing = E.torError (E.mkTorError . E.protocolErrorType $ "No cookie path specified.")
readCookie (Just file) = return . HS.fromBytes =<< BS.readFile file
readCookie (Just file) = do
b <- BS.readFile file
if BS.length b == 32
then return (HS.fromBytes b)
else E.torError (E.mkTorError . E.protocolErrorType $ "Invalid cookie file specified.")

errorF :: Ast.Line -> Maybe E.TorErrorType
errorF (Ast.Line 250 _) = Nothing
Expand Down