author | koda |
Wed, 14 Oct 2009 22:27:51 +0000 | |
changeset 2446 | cbb3af76bcc0 |
parent 2348 | b39d826e1ccd |
child 2869 | 93cc73dcc421 |
permissions | -rw-r--r-- |
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{-# LANGUAGE ScopedTypeVariables #-} |
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module Main where |
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Add caching for accounts information (entries are stored in memory forever)
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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 |