gameServer/Utils.hs
author alfadur
Thu, 09 Jul 2020 02:41:51 +0300
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{-
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 * Hedgewars, a free turn based strategy game
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 * Copyright (c) 2004-2015 Andrey Korotaev <unC0Rr@gmail.com>
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; version 2 of the License
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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 \-}
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{-# LANGUAGE OverloadedStrings,CPP #-}
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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 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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#if defined(OFFICIAL_SERVER)
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import qualified Data.Aeson.Types as Aeson
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import qualified Data.Text as Text
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#endif
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-------------------------------------------------
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import CoreTypes
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sockAddr2String :: SockAddr -> IO B.ByteString
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sockAddr2String = liftM (B.pack . fromJust . fst) . getNameInfo [] True False
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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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-- NOTE: Don't forget to update the error messages when you change the naming rules!
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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'] ++ ['\xFFF0'..'\xFFFF'])
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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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            , (38, "0.9.16-dev")
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            , (39, "0.9.16")
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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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            , (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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            , (49, "0.9.21")
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            , (50, "0.9.22-dev")
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            , (52, "0.9.23-dev")
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            , (53, "0.9.23")
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            , (54, "0.9.24-dev")
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            , (55, "0.9.24")
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            , (56, "0.9.25-dev")
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            , (57, "0.9.25")
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            , (58, "1.0.0-dev")
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            , (59, "1.0.0")
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            , (60, "1.0.1-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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   133
    hFlush stdout
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   134
    B.getLine
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   135
1f5604cd99be This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
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   136
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unfoldrE :: (b -> Either b (a, b)) -> b -> ([a], b)
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   138
unfoldrE f b  =
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   139
    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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   142
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8f730ba4ca3c bytestring-show RIP
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   143
showB :: (Show a) => a -> B.ByteString
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showB = B.pack . show
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   145
42746c5d4a80 Changed the standard show function to Text.Show.ByteString, and misc.
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   146
readInt_ :: (Num a) => B.ByteString -> a
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   147
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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   151
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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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   154
190a8e5d9956 Case-insensitive comparison of nicks
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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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   157
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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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   160
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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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        ]
10511
c33b2f001730 This should work, can't test: room flags passed in room info message instead of just 'in-game' state, including 'in-game', 'restricted joins', 'registered only' and 'passworded' flags
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    | p < 48 = [
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        showB $ isJust $ gameInfo r,
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        name r,
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   176
        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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        ]
10511
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    | otherwise = [
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        B.pack roomFlags,
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        name r,
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   187
        showB $ playersIn r,
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   188
        showB $ length $ teams r,
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   189
        n,
c33b2f001730 This should work, can't test: room flags passed in room info message instead of just 'in-game' state, including 'in-game', 'restricted joins', 'registered only' and 'passworded' flags
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   190
        Map.findWithDefault "+rnd+" "MAP" (mapParams r),
c33b2f001730 This should work, can't test: room flags passed in room info message instead of just 'in-game' state, including 'in-game', 'restricted joins', 'registered only' and 'passworded' flags
unc0rr
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   191
        head (Map.findWithDefault ["Normal"] "SCRIPT" (params r)),
c33b2f001730 This should work, can't test: room flags passed in room info message instead of just 'in-game' state, including 'in-game', 'restricted joins', 'registered only' and 'passworded' flags
unc0rr
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   192
        head (Map.findWithDefault ["Default"] "SCHEME" (params r)),
c33b2f001730 This should work, can't test: room flags passed in room info message instead of just 'in-game' state, including 'in-game', 'restricted joins', 'registered only' and 'passworded' flags
unc0rr
parents: 10460
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   193
        head (Map.findWithDefault ["Default"] "AMMO" (params r))
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   194
        ]
c33b2f001730 This should work, can't test: room flags passed in room info message instead of just 'in-game' state, including 'in-game', 'restricted joins', 'registered only' and 'passworded' flags
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   195
    where
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   196
        roomFlags = concat [
c33b2f001730 This should work, can't test: room flags passed in room info message instead of just 'in-game' state, including 'in-game', 'restricted joins', 'registered only' and 'passworded' flags
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   197
            "-"
c33b2f001730 This should work, can't test: room flags passed in room info message instead of just 'in-game' state, including 'in-game', 'restricted joins', 'registered only' and 'passworded' flags
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            , ['g' | isJust $ gameInfo r]
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   199
            , ['p' | not . B.null $ password r]
10511
c33b2f001730 This should work, can't test: room flags passed in room info message instead of just 'in-game' state, including 'in-game', 'restricted joins', 'registered only' and 'passworded' flags
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   200
            , ['j' | isRestrictedJoins  r]
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            , ['r' | isRegisteredOnly  r]
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   202
            ]
9109
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   203
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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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   209
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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   212
                ++ (("SCHEME", pr Map.! "SCHEME")
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   213
                : (filter (\(p, _) -> p /= "SCHEME") $ Map.toList pr))
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   214
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        | clientProto cl < 48 = map (toAnswer cl) $
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   216
                ("FULLMAPCONFIG", let l = Map.elems mpr in if length l > 5 then tail l else l)
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                : ("SCHEME", pr Map.! "SCHEME")
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                : (filter (\(p, _) -> p /= "SCHEME") $ Map.toList pr)
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   219
9109
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        | otherwise = map (toAnswer cl) $
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   221
                ("FULLMAPCONFIG", Map.elems mpr)
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   222
                : ("SCHEME", pr Map.! "SCHEME")
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   223
                : (filter (\(p, _) -> p /= "SCHEME") $ Map.toList pr)
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   224
    where
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   225
        toAnswer cl (paramName, paramStrs) = AnswerClients [sendChan cl] $ "CFG" : paramName : paramStrs
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   226
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   227
9448
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answerAllTeams :: ClientInfo -> [TeamInfo] -> [Action]
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answerAllTeams cl = concatMap toAnswer
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   230
    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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   236
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   237
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-- Locale function to localize strings.
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   239
-- loc is just the identity functions, but it will be collected by scripts
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   240
-- for localization. Use loc to mark a string for translation.
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loc :: B.ByteString -> B.ByteString
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loc = id
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   243
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   244
maybeNick :: Maybe ClientInfo -> B.ByteString
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   245
maybeNick = fromMaybe "[]" . liftM nick
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   246
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   247
-- borrowed from Data.List, just more general in types
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   248
deleteBy2                :: (a -> b -> Bool) -> a -> [b] -> [b]
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deleteBy2 _  _ []        = []
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   250
deleteBy2 eq x (y:ys)    = if x `eq` y then ys else y : deleteBy2 eq x ys
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   251
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deleteFirstsBy2          :: (a -> b -> Bool) -> [a] -> [b] -> [a]
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deleteFirstsBy2 eq       =  foldl (flip (deleteBy2 (flip eq)))
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   254
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sanitizeName :: B.ByteString -> B.ByteString
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   256
sanitizeName = B.map sc
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   257
    where
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        sc c | isAlphaNum c = c
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   259
             | otherwise = '_'
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isRegistered :: ClientInfo -> Bool
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isRegistered = (<) 0 . B.length . webPassword
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#if defined(OFFICIAL_SERVER)
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instance Aeson.ToJSON B.ByteString where
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  toJSON = Aeson.toJSON . B.unpack
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instance Aeson.FromJSON B.ByteString where
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  parseJSON = Aeson.withText "ByteString" $ pure . B.pack . Text.unpack
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instance Aeson.ToJSONKey B.ByteString where
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  toJSONKey = Aeson.toJSONKeyText (Text.pack . B.unpack)
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instance Aeson.FromJSONKey B.ByteString where
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  fromJSONKey = Aeson.FromJSONKeyTextParser (return . B.pack . Text.unpack)
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#endif