gameServer/HWProtoLobbyState.hs
author Wuzzy <Wuzzy2@mail.ru>
Wed, 08 Jul 2020 18:19:14 +0200
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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 #-}
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module HWProtoLobbyState where
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import Data.Maybe
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import Data.List
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import Control.Monad.Reader
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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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import Consts
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import HandlerUtils
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import RoomsAndClients
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import EngineInteraction
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import CommandHelp
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handleCmd_lobby :: CmdHandler
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handleCmd_lobby ["LIST"] = do
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    (ci, irnc) <- ask
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    let cl = irnc `client` ci
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    rooms <- allRoomInfos
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    let roomsInfoList = concatMap (\r -> roomInfo (clientProto cl) (maybeNick . liftM (client irnc) $ masterID r) r) . filter (\r -> (roomProto r == clientProto cl))
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    return $ if hasAskedList cl then [] else
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        [ ModifyClient (\c -> c{hasAskedList = True})
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        , AnswerClients [sendChan cl] ("ROOMS" : roomsInfoList rooms)]
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handleCmd_lobby ["CHAT", msg] = do
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    n <- clientNick
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    s <- roomOthersChans
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    return [AnswerClients s ["CHAT", n, msg], RegisterEvent LobbyChatMessage]
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handleCmd_lobby ["CREATE_ROOM", rName, roomPassword]
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    | illegalName rName = return [Warning $ loc "Illegal room name! A room name must be between 1-40 characters long, must not have a trailing or leading space and must not have any of these characters: $()*+?[]^{|}"]
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    | otherwise = do
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        rs <- allRoomInfos
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        cl <- thisClient
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        return $ if isJust $ find (\r -> rName == name r) rs then
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            [Warning $ loc "A room with the same name already exists."]
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            else
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            [
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                AddRoom rName roomPassword
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                , AnswerClients [sendChan cl] ["CLIENT_FLAGS", "+hr", nick cl]
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                , ModifyClient (\c -> c{isMaster = True, isReady = True, isJoinedMidGame = False})
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                , ModifyRoom (\r -> r{readyPlayers = 1})
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            ]
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handleCmd_lobby ["CREATE_ROOM", rName] =
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    handleCmd_lobby ["CREATE_ROOM", rName, ""]
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handleCmd_lobby ["JOIN_ROOM", roomName, roomPassword] = do
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    (_, irnc) <- ask
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    let ris = allRooms irnc
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    cl <- thisClient
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    let maybeRI = find (\ri -> roomName == name (irnc `room` ri)) ris
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    let jRI = fromJust maybeRI
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    let jRoom = irnc `room` jRI
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    let sameProto = clientProto cl == roomProto jRoom
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    let jRoomClients = map (client irnc) $ roomClients irnc jRI
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    let nicks = map nick jRoomClients
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    let owner = find isMaster jRoomClients
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    let chans = map sendChan (cl : jRoomClients)
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    let isBanned = host cl `elem` roomBansList jRoom
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    let clTeams =
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            if (clientProto cl >= 48) && (isJust $ gameInfo jRoom) && isRegistered cl then
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                filter (\t -> teamowner t == nick cl) . teamsAtStart . fromJust $ gameInfo jRoom 
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                else
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                []
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    let clTeamsNames = map teamname clTeams
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    return $
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        if isNothing maybeRI then
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            [Warning $ loc "No such room."]
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            else if (not sameProto) && (not $ isAdministrator cl) then
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            [Warning $ loc "Room version incompatible to your Hedgewars version!"]
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            else if isRestrictedJoins jRoom && not (hasSuperPower cl) then
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            [Warning $ loc "Access denied. This room currently doesn't allow joining."]
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            else if isRegisteredOnly jRoom && (not $ isRegistered cl) && not (isAdministrator cl) then
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            [Warning $ loc "Access denied. This room is for registered users only."]
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            else if isBanned then
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            [Warning $ loc "You are banned from this room."]
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            else if roomPassword /= password jRoom  && not (hasSuperPower cl) then
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            [NoticeMessage WrongPassword]
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            else
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            (
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                MoveToRoom jRI
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                : ModifyClient (\c -> c{isJoinedMidGame = isJust $ gameInfo jRoom
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                                        , teamsInGame = fromIntegral $ length clTeams
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                                        , clientClan = teamcolor `fmap` listToMaybe clTeams})
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                : AnswerClients chans ["CLIENT_FLAGS", "-r", nick cl]
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                : [(AnswerClients [sendChan cl] $ "JOINED" : nicks) | not $ null nicks]
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            )
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            ++ [ModifyRoom (\r -> let (t', g') = moveTeams clTeamsNames . fromJust $ gameInfo r in r{gameInfo = Just g', teams = t'}) | not $ null clTeams]
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            ++ [AnswerClients [sendChan cl] ["CLIENT_FLAGS", "+h", nick $ fromJust owner] | isJust owner]
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            ++ [sendStateFlags cl jRoomClients | not $ null jRoomClients]
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            ++ answerFullConfig cl jRoom
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            ++ answerTeams cl jRoom
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            ++ watchRound cl jRoom chans
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            ++ [AnswerClients [sendChan cl] ["CHAT", nickGreeting, greeting jRoom] | greeting jRoom /= ""]
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            ++ map (\t -> AnswerClients chans ["EM", toEngineMsg $ 'G' `B.cons` t]) clTeamsNames
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            ++ [AnswerClients [sendChan cl] ["EM", toEngineMsg "I"] | isPaused `fmap` gameInfo jRoom == Just True]
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        where
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        moveTeams :: [B.ByteString] -> GameInfo -> ([TeamInfo], GameInfo)
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        moveTeams cts g = (deleteFirstsBy2 (\a b -> teamname a == b) (teamsAtStart g) (leftTeams g \\ cts)
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            , g{leftTeams = leftTeams g \\ cts, rejoinedTeams = rejoinedTeams g ++ cts, teamsInGameNumber = teamsInGameNumber g + length cts})
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        sendStateFlags cl clients = AnswerClients [sendChan cl] . concat . intersperse [""] . filter (not . null) . concat $
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                [f "+r" ready, f "-r" unready, f "+g" ingame, f "-g" inroomlobby]
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            where
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            (ready, unready) = partition isReady clients
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            (ingame, inroomlobby) = partition isInGame clients
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            f fl lst = ["CLIENT_FLAGS" : fl : map nick lst | not $ null lst]
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        -- get config from gameInfo if possible, otherwise from room
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        answerFullConfig cl jRoom = let f r g = (if isJust $ gameInfo jRoom then g . fromJust . gameInfo else r) jRoom
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                                    in answerFullConfigParams cl (f mapParams giMapParams) (f params giParams)
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        answerTeams cl jRoom = let f = if isJust $ gameInfo jRoom then teamsAtStart . fromJust . gameInfo else teams in answerAllTeams cl $ f jRoom
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        watchRound cl jRoom chans = if isNothing $ gameInfo jRoom then
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                    []
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                else
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                    AnswerClients [sendChan cl]  ["RUN_GAME"]
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                    : AnswerClients chans ["CLIENT_FLAGS", "+g", nick cl]
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                    : ModifyClient (\c -> c{isInGame = True})
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                    : [AnswerClients [sendChan cl] $ "EM" : toEngineMsg "e$spectate 1" : (reverse . roundMsgs . fromJust . gameInfo $ jRoom)]
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handleCmd_lobby ["JOIN_ROOM", roomName] =
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    handleCmd_lobby ["JOIN_ROOM", roomName, ""]
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handleCmd_lobby ["FOLLOW", asknick] = do
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    (_, rnc) <- ask
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    clChan <- liftM sendChan thisClient
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    ci <- clientByNick asknick
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    let ri = clientRoom rnc $ fromJust ci
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    let roomName = name $ room rnc ri
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    if isNothing ci || ri == lobbyId then
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        return []
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        else
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        liftM ((:) (AnswerClients [clChan] ["JOINING", roomName])) $ handleCmd_lobby ["JOIN_ROOM", roomName]
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handleCmd_lobby ("RND":rs) = do
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    c <- liftM sendChan thisClient
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    return [Random [c] rs]
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handleCmd_lobby ["HELP"] = do
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    cl <- thisClient
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    if isAdministrator cl then
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        return (cmdHelpActionList [sendChan cl] cmdHelpLobbyAdmin)
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    else
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        return (cmdHelpActionList [sendChan cl] cmdHelpLobbyPlayer)
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    ---------------------------
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    -- Administrator's stuff --
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handleCmd_lobby ["KICK", kickNick] = serverAdminOnly $ do
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    (ci, _) <- ask
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    kickId <- clientByNick kickNick
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    return [KickClient $ fromJust kickId | isJust kickId && fromJust kickId /= ci]
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handleCmd_lobby ["BAN", banNick, reason, duration] = serverAdminOnly $ do
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    (ci, _) <- ask
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    banId <- clientByNick banNick
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    return [BanClient (readInt_ duration) reason (fromJust banId) | isJust banId && fromJust banId /= ci]
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handleCmd_lobby ["BANIP", ip, reason, duration] = serverAdminOnly $
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    return [BanIP ip (readInt_ duration) reason]
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handleCmd_lobby ["BANNICK", n, reason, duration] = serverAdminOnly $
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    return [BanNick n (readInt_ duration) reason]
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handleCmd_lobby ["BANLIST"] = serverAdminOnly $
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    return [BanList]
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handleCmd_lobby ["UNBAN", entry] = serverAdminOnly $
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    return [Unban entry]
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handleCmd_lobby ["SET_SERVER_VAR", "MOTD_NEW", newMessage] = serverAdminOnly $
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    return [ModifyServerInfo (\si -> si{serverMessage = newMessage})]
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handleCmd_lobby ["SET_SERVER_VAR", "MOTD_OLD", newMessage] = serverAdminOnly $
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    return [ModifyServerInfo (\si -> si{serverMessageForOldVersions = newMessage})]
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handleCmd_lobby ["SET_SERVER_VAR", "LATEST_PROTO", protoNum] = serverAdminOnly $
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    return [ModifyServerInfo (\si -> si{latestReleaseVersion = readNum}) | readNum > 0]
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    where
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        readNum = readInt_ protoNum
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handleCmd_lobby ["GET_SERVER_VAR"] = serverAdminOnly $
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    return [SendServerVars]
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handleCmd_lobby ["CLEAR_ACCOUNTS_CACHE"] = serverAdminOnly $
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    return [ClearAccountsCache]
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   222
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handleCmd_lobby ["RESTART_SERVER", "YES"] = serverAdminOnly $
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    return [RestartServer]
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handleCmd_lobby ["RESTART_SERVER"] = serverAdminOnly $
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    return [Warning $ loc "Please confirm server restart with '/restart_server yes'."]
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handleCmd_lobby ["RESTART_SERVER", _] = handleCmd_lobby ["RESTART_SERVER"]
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   231
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handleCmd_lobby ["STATS"] = serverAdminOnly $
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    return [Stats]
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   234
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handleCmd_lobby (s:_) = return [ProtocolError $ "Incorrect command '" `B.append` s `B.append` "' (state: in lobby)"]
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   236
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handleCmd_lobby [] = return [ProtocolError "Empty command (state: in lobby)"]