gameServer/HWProtoCore.hs
author unc0rr
Sun, 08 Jan 2017 23:57:45 +0300
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permissions -rw-r--r--
Some parsing using nom
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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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handleCmd, handleCmd_loggedin :: 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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        msg = if not $ null xs then "User quit: " `B.append` (head xs) else loc "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_loggedin ["CMD", parameters] = uncurry h $ extractParameters parameters
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    where
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        h "DELEGATE" n | not $ B.null n = handleCmd ["DELEGATE", n]
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        h "SAVEROOM" n | not $ B.null n = handleCmd ["SAVEROOM", n]
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        h "LOADROOM" n | not $ B.null n = handleCmd ["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 [] else handleCmd ["SAVE", sn, B.tail ln]
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        h "DELETE" n | not $ B.null n = handleCmd ["DELETE", n]
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        h "STATS" _ = handleCmd ["STATS"]
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        h "PART" m | not $ B.null m = handleCmd ["PART", m]
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                   | otherwise = handleCmd ["PART"]
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        h "QUIT" m | not $ B.null m = handleCmd ["QUIT", m]
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                   | otherwise = 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", "[global notice]", p]]
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        h "WATCH" f = return [QueryReplay f]
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        h "FIX" _ = handleCmd ["FIX"]
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        h "UNFIX" _ = handleCmd ["UNFIX"]
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        h "GREETING" msg | not $ B.null msg = handleCmd ["GREETING", msg]
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        h "CALLVOTE" msg | B.null msg = handleCmd ["CALLVOTE"]
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                         | otherwise = let (c, p) = extractParameters msg in
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                                           if B.null p then handleCmd ["CALLVOTE", c] else handleCmd ["CALLVOTE", c, p]
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        h "VOTE" msg | not $ B.null msg = handleCmd ["VOTE", upperCase msg]
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        h "FORCE" msg | not $ B.null msg = handleCmd ["VOTE", upperCase msg, "FORCE"]
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        h "MAXTEAMS" n | not $ B.null n = handleCmd ["MAXTEAMS", n]
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        h "INFO" n | not $ B.null n = handleCmd ["INFO", n]
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        h "RESTART_SERVER" "YES" = handleCmd ["RESTART_SERVER"]
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        h "REGISTERED_ONLY" _ = serverAdminOnly $ do
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            cl <- thisClient
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            return
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                [ModifyServerInfo(\s -> s{isRegisteredUsersOnly = not $ isRegisteredUsersOnly s})
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                , AnswerClients [sendChan cl] ["CHAT", "[server]", "'Registered only' state toggled"]
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                ]
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        h "SUPER_POWER" _ = serverAdminOnly $ return [ModifyClient (\c -> c{hasSuperPower = True})]
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        h c p = return [Warning $ B.concat ["Unknown cmd: /", c, " ", p]]
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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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    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, "room ", name clRoom] else adminSign `B.append` "lobby"
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    let roomStatus = if isJust $ gameInfo clRoom then
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            if teamsInGame cl > 0 then "(playing)" else "(spectating)"
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            else
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            ""
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    let hostStr = if isAdminAsking then host cl else B.empty
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    if noSuchClient then
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        return []
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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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            ]
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handleCmd_loggedin cmd = do
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    (ci, rnc) <- ask
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    if clientRoom rnc ci == lobbyId then
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        handleCmd_lobby cmd
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        else
1f5604cd99be This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
nemo
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   139
        handleCmd_inRoom cmd