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better protocol error message, indicate if the command was able to be parsed or was misplaced

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This commit is contained in:
Joey Hess 2013-12-27 14:03:35 -04:00
parent 82c2439162
commit 551573570f
1 changed files with 6 additions and 5 deletions
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11
Remote/External.hs
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@ -241,14 +241,15 @@ receiveMessage lck external handleresponse handlerequest handleasync = do
s <- fromExternal lck external externalReceive $ liftIO . hGetLine
liftIO $ protocolDebug external False s
case parseMessage s :: Maybe Response of
Just resp -> maybe (protocolError s) id (handleresponse resp)
Just resp -> maybe (protocolError True s) id (handleresponse resp)
Nothing -> case parseMessage s :: Maybe RemoteRequest of
Just req -> maybe (protocolError s) id (handlerequest req)
Just req -> maybe (protocolError True s) id (handlerequest req)
Nothing -> case parseMessage s :: Maybe AsyncMessage of
Just msg -> maybe (protocolError s) id (handleasync msg)
Nothing -> protocolError s
Just msg -> maybe (protocolError True s) id (handleasync msg)
Nothing -> protocolError False s
where
protocolError s = error $ "external special remote protocol error, unexpectedly received \"" ++ s ++ "\""
protocolError parsed s = error $ "external special remote protocol error, unexpectedly received \"" ++ s ++ "\" " ++
if parsed then "(command not allowed at this time)" else "(unable to parse command)"
protocolDebug :: External -> Bool -> String -> IO ()
protocolDebug external sendto line = debugM "external" $ unwords