gameServer/OfficialServer/extdbinterface.hs
author nemo
Sat, 17 Oct 2009 23:03:31 +0000
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permissions -rw-r--r--
Disable hiding of frontend for now - seems it might be reasons for frontend shutting down when host quits.
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{-# LANGUAGE ScopedTypeVariables #-}
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module Main where
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import Prelude hiding (catch)
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import Control.Monad
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import Control.Exception
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import System.IO
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import Maybe
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import Database.HDBC
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import Database.HDBC.MySQL
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--------------------------
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import CoreTypes
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dbQueryAccount =
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	"select users.pass, users_roles.rid from users left join users_roles on users.uid = users_roles.uid where users.name = ?"
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dbQueryStats =
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	"UPDATE gameserver_stats SET players = ?, rooms = ?, last_update = UNIX_TIMESTAMP()"
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dbInteractionLoop dbConn = forever $ do
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	q <- (getLine >>= return . read)
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	hPutStrLn stderr $ show q
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	case q of
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		CheckAccount clUid clNick _ -> do
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				statement <- prepare dbConn dbQueryAccount
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				execute statement [SqlString $ clNick]
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				passAndRole <- fetchRow statement
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				finish statement
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				let response =
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					if isJust passAndRole then
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						(
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							clUid,
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							HasAccount
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								(fromSql $ head $ fromJust $ passAndRole)
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								((fromSql $ last $ fromJust $ passAndRole) == (Just (3 :: Int)))
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						)
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					else
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						(clUid, Guest)
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				putStrLn (show response)
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				hFlush stdout
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		SendStats clients rooms ->
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				run dbConn dbQueryStats [SqlInt32 $ fromIntegral clients, SqlInt32 $ fromIntegral rooms] >> return ()
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dbConnectionLoop mySQLConnectionInfo =
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	Control.Exception.handle (\(_ :: IOException) -> return ()) $ handleSqlError $
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		bracket
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			(connectMySQL mySQLConnectionInfo)
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			(disconnect)
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			(dbInteractionLoop)
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processRequest :: DBQuery -> IO String
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processRequest (CheckAccount clUid clNick clHost) = return $ show (clUid, Guest)
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main = do
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		dbHost <- getLine
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		dbLogin <- getLine
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		dbPassword <- getLine
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		let mySQLConnectInfo = defaultMySQLConnectInfo {mysqlHost = dbHost, mysqlDatabase = "hedge_main", mysqlUser = dbLogin, mysqlPassword = dbPassword}
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		dbConnectionLoop mySQLConnectInfo