gameServer/Utils.hs
author unc0rr
Wed, 18 Jun 2014 17:36:46 +0400
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permissions -rw-r--r--
Code drawn map in haskell \o/ (not finished, todo: compressing and base64 encoding)
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{-# LANGUAGE OverloadedStrings #-}
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module Utils where
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import Data.Char
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import Data.Word
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import qualified Data.Map as Map
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import qualified Data.Char as Char
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import Numeric
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import Network.Socket
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import System.IO
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import qualified Data.List as List
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import Control.Monad
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import qualified Data.ByteString.Lazy as BL
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import qualified Text.Show.ByteString as BS
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import qualified Data.ByteString.Char8 as B
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import qualified Data.ByteString.UTF8 as UTF8
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import Data.Maybe
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-------------------------------------------------
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import CoreTypes
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sockAddr2String :: SockAddr -> IO B.ByteString
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sockAddr2String (SockAddrInet _ hostAddr) = liftM B.pack $ inet_ntoa hostAddr
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sockAddr2String (SockAddrInet6 _ _ (a, b, c, d) _) =
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    return $ B.pack $ (foldr1 (.)
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        $ List.intersperse (':':)
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        $ concatMap (\n -> (\(a0, a1) -> [showHex a0, showHex a1]) $ divMod n 65536) [a, b, c, d]) []
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maybeRead :: Read a => String -> Maybe a
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maybeRead s = case reads s of
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    [(x, rest)] | all isSpace rest -> Just x
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    _         -> Nothing
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teamToNet :: TeamInfo -> [B.ByteString]
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teamToNet team =
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        "ADD_TEAM"
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        : teamname team
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        : teamgrave team
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        : teamfort team
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        : teamvoicepack team
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        : teamflag team
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        : teamowner team
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        : (showB . difficulty $ team)
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        : hhsInfo
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    where
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        hhsInfo = concatMap (\(HedgehogInfo n hat) -> [n, hat]) $ hedgehogs team
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modifyTeam :: TeamInfo -> RoomInfo -> RoomInfo
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modifyTeam team room = room{teams = replaceTeam team $ teams room}
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    where
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    replaceTeam _ [] = error "modifyTeam: no such team"
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    replaceTeam tm (t:ts) =
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        if teamname tm == teamname t then
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            tm : ts
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        else
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            t : replaceTeam tm ts
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illegalName :: B.ByteString -> Bool
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illegalName b = B.null b || length s > 40 || all isSpace s || isSpace (head s) || isSpace (last s) || any isIllegalChar s
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    where
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        s = UTF8.toString b
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        isIllegalChar c = c `List.elem` ("$()*+?[]^{|}\x7F" ++ ['\x00'..'\x1F'])
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protoNumber2ver :: Word16 -> B.ByteString
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protoNumber2ver v = Map.findWithDefault "Unknown" v vermap
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    where
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        vermap = Map.fromList [
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            (17, "0.9.7-dev")
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            , (19, "0.9.7")
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            , (38, "0.9.16-dev")
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            , (40, "0.9.17-dev")
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            , (41, "0.9.17")
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            , (42, "0.9.18-dev")
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            , (43, "0.9.18")
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            , (44, "0.9.19-dev")
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            , (45, "0.9.19")
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            , (46, "0.9.20-dev")
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            , (48, "0.9.21-dev")
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            ]
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askFromConsole :: B.ByteString -> IO B.ByteString
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askFromConsole msg = do
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    B.putStr msg
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    hFlush stdout
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    B.getLine
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unfoldrE :: (b -> Either b (a, b)) -> b -> ([a], b)
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unfoldrE f b  =
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    case f b of
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        Right (a, new_b) -> let (a', b') = unfoldrE f new_b in (a : a', b')
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        Left new_b       -> ([], new_b)
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showB :: (BS.Show a) => a -> B.ByteString
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showB = B.concat . BL.toChunks . BS.show
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readInt_ :: (Num a) => B.ByteString -> a
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readInt_ str =
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  case B.readInt str of
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       Just (i, t) | B.null t -> fromIntegral i
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       _                      -> 0
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cutHost :: B.ByteString -> B.ByteString
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cutHost = B.intercalate "." .  flip (++) ["*","*"] . List.take 2 . B.split '.'
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caseInsensitiveCompare :: B.ByteString -> B.ByteString -> Bool
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caseInsensitiveCompare a b = upperCase a == upperCase b
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upperCase :: B.ByteString -> B.ByteString
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upperCase = UTF8.fromString . map Char.toUpper . UTF8.toString
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roomInfo :: Word16 -> B.ByteString -> RoomInfo -> [B.ByteString]
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roomInfo p n r
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    | p < 46 = [
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        showB $ isJust $ gameInfo r,
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        name r,
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        showB $ playersIn r,
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        showB $ length $ teams r,
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        n,
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        Map.findWithDefault "+rnd+" "MAP" (mapParams r),
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        head (Map.findWithDefault ["Default"] "SCHEME" (params r)),
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        head (Map.findWithDefault ["Default"] "AMMO" (params r))
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        ]
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    | otherwise = [
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        showB $ isJust $ gameInfo r,
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        name r,
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        showB $ playersIn r,
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        showB $ length $ teams r,
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        n,
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        Map.findWithDefault "+rnd+" "MAP" (mapParams r),
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        head (Map.findWithDefault ["Normal"] "SCRIPT" (params r)),
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        head (Map.findWithDefault ["Default"] "SCHEME" (params r)),
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        head (Map.findWithDefault ["Default"] "AMMO" (params r))
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        ]
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answerFullConfigParams ::
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            ClientInfo
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            -> Map.Map B.ByteString B.ByteString
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            -> Map.Map B.ByteString [B.ByteString]
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            -> [Action]
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answerFullConfigParams cl mpr pr
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        | clientProto cl < 38 = map (toAnswer cl) $
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                (reverse . map (\(a, b) -> (a, [b])) $ Map.toList mpr)
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                ++ (("SCHEME", pr Map.! "SCHEME")
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                : (filter (\(p, _) -> p /= "SCHEME") $ Map.toList pr))
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        | otherwise = map (toAnswer cl) $
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                ("FULLMAPCONFIG", Map.elems mpr)
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                : ("SCHEME", pr Map.! "SCHEME")
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                : (filter (\(p, _) -> p /= "SCHEME") $ Map.toList pr)
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    where
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        toAnswer cl (paramName, paramStrs) = AnswerClients [sendChan cl] $ "CFG" : paramName : paramStrs
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answerAllTeams :: ClientInfo -> [TeamInfo] -> [Action]
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answerAllTeams cl = concatMap toAnswer
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    where
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        clChan = sendChan cl
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        toAnswer team =
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            [AnswerClients [clChan] $ teamToNet team,
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            AnswerClients [clChan] ["TEAM_COLOR", teamname team, teamcolor team],
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            AnswerClients [clChan] ["HH_NUM", teamname team, showB $ hhnum team]]
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loc :: B.ByteString -> B.ByteString
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loc = id
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maybeNick :: Maybe ClientInfo -> B.ByteString
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maybeNick = fromMaybe "[empty]" . liftM nick