gameServer/HWProtoCore.hs
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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 HWProtoCore where
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import Control.Monad.Reader
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import Data.Maybe
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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 HWProtoNEState
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import HWProtoLobbyState
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import HWProtoInRoomState
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import HWProtoChecker
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import HandlerUtils
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import RoomsAndClients
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import Utils
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import Consts
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handleCmd, handleCmd_loggedin, handleCmd_lobbyOnly, handleCmd_roomOnly :: CmdHandler
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handleCmd ["PING"] = answerClient ["PONG"]
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handleCmd ("QUIT" : xs) = return [ByeClient msg]
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    where
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        -- "bye" is a special string (do not translate!) when the user quits manually,
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        -- otherwise there will be an additional server message
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        msg = if not $ null xs then (head xs) else "bye"
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handleCmd ["PONG"] = do
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    cl <- thisClient
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    if pingsQueue cl == 0 then
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        return [ProtocolError "Protocol violation"]
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        else
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        return [ModifyClient (\c -> c{pingsQueue = pingsQueue c - 1})]
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handleCmd cmd = do
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    (ci, irnc) <- ask
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    let cl = irnc `client` ci
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    if logonPassed cl then
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        if isChecker cl then
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            handleCmd_checker cmd
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            else
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            handleCmd_loggedin cmd
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        else
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        handleCmd_NotEntered cmd
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handleCmd_lobbyOnly cmd = do
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    (ci, rnc) <- ask
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    if (clientRoom rnc ci) == lobbyId then
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        handleCmd cmd
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    else
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        return [Warning $ loc "This command is only available in the lobby."]
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handleCmd_roomOnly cmd = do
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    (ci, rnc) <- ask
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    if (clientRoom rnc ci) == lobbyId then
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        return [Warning $ loc "This command is only available in rooms."]
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    else
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        handleCmd cmd
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-- Chat command handling
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unknownCmdWarningText :: B.ByteString
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unknownCmdWarningText = loc "Unknown command or invalid parameters. Say '/help' in chat for a list of commands."
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handleCmd_loggedin ["CMD"] = return [Warning unknownCmdWarningText]
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handleCmd_loggedin ["CMD", parameters] = uncurry h $ extractParameters parameters
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    where
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        -- room-only commands
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        h "DELEGATE" n | not $ B.null n = handleCmd_roomOnly ["DELEGATE", n]
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        h "SAVEROOM" n | not $ B.null n = handleCmd_roomOnly ["SAVEROOM", n]
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        h "LOADROOM" n | not $ B.null n = handleCmd_roomOnly ["LOADROOM", n]
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        h "SAVE" n | not $ B.null n = let (sn, ln) = B.break (== ' ') n in if B.null ln then return [Warning unknownCmdWarningText] else handleCmd_roomOnly ["SAVE", sn, B.tail ln]
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        h "DELETE" n | not $ B.null n = handleCmd_roomOnly ["DELETE", n]
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        h "FIX" _ = handleCmd_roomOnly ["FIX"]
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        h "UNFIX" _ = handleCmd_roomOnly ["UNFIX"]
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        h "GREETING" msg = handleCmd_roomOnly ["GREETING", msg]
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        h "CALLVOTE" msg | B.null msg = handleCmd_roomOnly ["CALLVOTE"]
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                         | otherwise = let (c, p) = extractParameters msg in
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                                           if B.null p then handleCmd_roomOnly ["CALLVOTE", c] else handleCmd_roomOnly ["CALLVOTE", c, p]
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        h "VOTE" msg | not $ B.null msg = handleCmd_roomOnly ["VOTE", upperCase msg]
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                     | otherwise = handleCmd_roomOnly ["VOTE", ""]
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        h "FORCE" msg | not $ B.null msg = handleCmd_roomOnly ["VOTE", upperCase msg, "FORCE"]
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                      | otherwise = handleCmd_roomOnly ["VOTE", "", "FORCE"]
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        h "MAXTEAMS" n | not $ B.null n = handleCmd_roomOnly ["MAXTEAMS", n]
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                       | otherwise = handleCmd_roomOnly ["MAXTEAMS"]
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        -- lobby-only commands
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        h "STATS" _ = handleCmd_lobbyOnly ["STATS"]
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        h "RESTART_SERVER" p = handleCmd_lobbyOnly ["RESTART_SERVER", upperCase p]
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        -- room and lobby commands
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        h "QUIT" _ = handleCmd ["QUIT"]
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        h "RND" p = handleCmd ("RND" : B.words p)
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        h "GLOBAL" p = serverAdminOnly $ do
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            rnc <- liftM snd ask
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            let chans = map (sendChan . client rnc) $ allClients rnc
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            return [AnswerClients chans ["CHAT", nickGlobal, p]]
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        h "WATCH" f = return [QueryReplay f]
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        h "INFO" n | not $ B.null n = handleCmd ["INFO", n]
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        h "HELP" _ = handleCmd ["HELP"]
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        h "REGISTERED_ONLY" _ = serverAdminOnly $ do
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            rnc <- liftM snd ask
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            let chans = map (sendChan . client rnc) $ allClients rnc
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            return
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                [ModifyServerInfo(\s -> s{isRegisteredUsersOnly = not $ isRegisteredUsersOnly s})
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                , ShowRegisteredOnlyState chans
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                ]
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        h "SUPER_POWER" _ = serverAdminOnly $ do
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            cl <- thisClient
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            return
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                [ModifyClient (\c -> c{hasSuperPower = True})
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                , AnswerClients [sendChan cl] ["CHAT", nickServer, loc "Super power activated."]
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                ]
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        h _ _ = return [Warning unknownCmdWarningText]
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10039
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        extractParameters p = let (a, b) = B.break (== ' ') p in (upperCase a, B.dropWhile (== ' ') b)
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handleCmd_loggedin ["INFO", asknick] = do
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    (_, rnc) <- ask
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    maybeClientId <- clientByNick asknick
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    isAdminAsking <- liftM isAdministrator thisClient
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    let noSuchClient = isNothing maybeClientId
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    let clientId = fromJust maybeClientId
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    let cl = rnc `client` fromJust maybeClientId
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    let roomId = clientRoom rnc clientId
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    let clRoom = room rnc roomId
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38e8787483db '@' for server admin status, '+' for room admins
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    let roomMasterSign = if isMaster cl then "+" else ""
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    let adminSign = if isAdministrator cl then "@" else ""
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    let rInfo = if roomId /= lobbyId then B.concat [adminSign, roomMasterSign, loc "room", " ", name clRoom] else adminSign `B.append` (loc "lobby")
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    let roomStatus = if isJust $ gameInfo clRoom then
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            if teamsInGame cl > 0 then (loc "(playing)") else (loc "(spectating)")
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            else
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            ""
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b7161f00a6ca hide complete IP of other users, when non-admin requests player info. showing the first two parts of the IP was kinda pointless to begin with (what for?) and has recently lead to increased abuse and lobby flooding due to bots collecting/posting IP tracking information
sheepluva
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    let hostStr = if isAdminAsking then host cl else B.empty
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9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
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   157
    if noSuchClient then
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        answerClient [ "CHAT", nickServer, loc "Player is not online." ]
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        else
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        answerClient [
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            "INFO",
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            nick cl,
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            B.concat ["[", hostStr, "]"],
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            protoNumber2ver $ clientProto cl,
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            B.concat ["[", rInfo, "]", roomStatus]
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   166
            ]
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7f303aa066da Implement kick from server by administrator
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   167
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   168
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nemo
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handleCmd_loggedin cmd = do
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nemo
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    (ci, rnc) <- ask
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   171
    if clientRoom rnc ci == lobbyId then
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   172
        handleCmd_lobby cmd
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   173
        else
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        handleCmd_inRoom cmd