gameServer/OfficialServer/extdbinterface.hs
author unc0rr
Sat, 24 Aug 2013 10:07:34 +0400
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Fix 'non-exhaustive pattern' crash
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{-# LANGUAGE ScopedTypeVariables, OverloadedStrings #-}
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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 Data.Maybe
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import Database.HDBC
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import Database.HDBC.MySQL
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import Data.List (lookup)
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import qualified Data.ByteString.Char8 as B
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--------------------------
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import CoreTypes
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import Utils
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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 AND users_roles.rid = 3) WHERE users.name = ?"
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dbQueryStats =
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    "INSERT INTO gameserver_stats (players, rooms, last_update) VALUES (?, ?, UNIX_TIMESTAMP())"
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dbQueryAchievement =
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    "INSERT INTO achievements (typeid, userid, value, filename, location) \
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    \ VALUES ((SELECT id FROM achievement_types WHERE name = ?), (SELECT uid FROM users WHERE name = ?), \
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    \ ?, ?, ?)"
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dbInteractionLoop dbConn = forever $ do
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    q <- liftM read getLine
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    hPutStrLn stderr $ show q
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    case q of
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        CheckAccount clId clUid clNick _ -> do
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                statement <- prepare dbConn dbQueryAccount
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                execute statement [SqlByteString 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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                            clId,
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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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                        (clId, clUid, Guest)
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                print 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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--StoreAchievements (B.pack fileName) (map toPair teams) info
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        StoreAchievements fileName teams info -> 
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            mapM_ (run dbConn dbQueryAchievement) $ (parseStats fileName teams) info
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parseStats :: B.ByteString -> [(B.ByteString, B.ByteString)] -> [B.ByteString] -> [[SqlValue]]
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parseStats fileName teams = ps
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    where
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    ps [] = []
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    ps ("DRAW" : bs) = ps bs
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    ps ("WINNERS" : n : bs) = ps $ drop (readInt_ n) bs
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    ps ("ACHIEVEMENT" : typ : teamname : location : value : bs) =
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        [SqlByteString typ
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        , SqlByteString $ fromMaybe "" (lookup teamname teams)
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        , SqlInt32 (readInt_ value)
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        , SqlByteString fileName
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        , SqlByteString location
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        ] : ps bs
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    ps (b:bs) = ps bs
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dbConnectionLoop mySQLConnectionInfo =
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    Control.Exception.handle (\(e :: IOException) -> hPutStrLn stderr $ show e) $ 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 clId clUid clNick clHost) = return $ show (clclId, clUid, Guest)
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main = do
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        dbHost <- getLine
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        dbName <- getLine
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        dbLogin <- getLine
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        dbPassword <- getLine
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        let mySQLConnectInfo = defaultMySQLConnectInfo {mysqlHost = dbHost, mysqlDatabase = dbName, mysqlUser = dbLogin, mysqlPassword = dbPassword}
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        dbConnectionLoop mySQLConnectInfo