gameServer/Actions.hs
author dag10
Mon, 21 Jan 2013 21:52:49 -0500
changeset 8424 225ede46e3dc
parent 8422 ec41194d4444
child 8438 64ac58abd02a
permissions -rw-r--r--
On pagenetgame, when window is too small the map/game options becomes a tabbed interface to allow for a few lines of chat to always be visible. Restored HWForm's min height to 580. Fixed the 2px alignment issue with the map list and map previews' top edges that unC0Rr was whining about. <3

{-# LANGUAGE CPP, OverloadedStrings, ScopedTypeVariables #-}
{-# OPTIONS_GHC -fno-warn-orphans #-}
module Actions where

import Control.Concurrent
import qualified Data.Set as Set
import qualified Data.Map as Map
import qualified Data.List as L
import qualified Control.Exception as Exception
import System.Log.Logger
import Control.Monad
import Data.Time
import Data.Maybe
import Control.Monad.Reader
import Control.Monad.State.Strict
import qualified Data.ByteString.Char8 as B
import Control.DeepSeq
import Data.Unique
import Control.Arrow
import Control.Exception
import System.Process
import Network.Socket
-----------------------------
#if defined(OFFICIAL_SERVER)
import OfficialServer.GameReplayStore
#endif
import CoreTypes
import Utils
import ClientIO
import ServerState
import Consts
import ConfigFile
import EngineInteraction

data Action =
    AnswerClients ![ClientChan] ![B.ByteString]
    | SendServerMessage
    | SendServerVars
    | MoveToRoom RoomIndex
    | MoveToLobby B.ByteString
    | RemoveTeam B.ByteString
    | SendTeamRemovalMessage B.ByteString
    | RemoveRoom
    | FinishGame
    | UnreadyRoomClients
    | JoinLobby
    | ProtocolError B.ByteString
    | Warning B.ByteString
    | NoticeMessage Notice
    | ByeClient B.ByteString
    | KickClient ClientIndex
    | KickRoomClient ClientIndex
    | BanClient NominalDiffTime B.ByteString ClientIndex
    | BanIP B.ByteString NominalDiffTime B.ByteString
    | BanNick B.ByteString NominalDiffTime B.ByteString
    | BanList
    | Unban B.ByteString
    | ChangeMaster (Maybe ClientIndex)
    | RemoveClientTeams ClientIndex
    | ModifyClient (ClientInfo -> ClientInfo)
    | ModifyClient2 ClientIndex (ClientInfo -> ClientInfo)
    | ModifyRoomClients (ClientInfo -> ClientInfo)
    | ModifyRoom (RoomInfo -> RoomInfo)
    | ModifyServerInfo (ServerInfo -> ServerInfo)
    | AddRoom B.ByteString B.ByteString
    | SendUpdateOnThisRoom
    | CheckRegistered
    | ClearAccountsCache
    | ProcessAccountInfo AccountInfo
    | AddClient ClientInfo
    | DeleteClient ClientIndex
    | PingAll
    | StatsAction
    | RestartServer
    | AddNick2Bans B.ByteString B.ByteString UTCTime
    | AddIP2Bans B.ByteString B.ByteString UTCTime
    | CheckBanned Bool
    | SaveReplay
    | Stats


type CmdHandler = [B.ByteString] -> Reader (ClientIndex, IRnC) [Action]

instance NFData Action where
    rnf (AnswerClients chans msg) = chans `deepseq` msg `deepseq` ()
    rnf a = a `seq` ()

instance NFData B.ByteString
instance NFData (Chan a)


othersChans :: StateT ServerState IO [ClientChan]
othersChans = do
    cl <- client's id
    ri <- clientRoomA
    liftM (map sendChan . filter (/= cl)) $ roomClientsS ri

processAction :: Action -> StateT ServerState IO ()


processAction (AnswerClients chans msg) =
    io $ mapM_ (`writeChan` (msg `deepseq` msg)) (chans `deepseq` chans)


processAction SendServerMessage = do
    chan <- client's sendChan
    protonum <- client's clientProto
    si <- liftM serverInfo get
    let message = if protonum < latestReleaseVersion si then
            serverMessageForOldVersions si
            else
            serverMessage si
    processAction $ AnswerClients [chan] ["SERVER_MESSAGE", message]


processAction SendServerVars = do
    chan <- client's sendChan
    si <- gets serverInfo
    io $ writeChan chan ("SERVER_VARS" : vars si)
    where
        vars si = [
            "MOTD_NEW", serverMessage si,
            "MOTD_OLD", serverMessageForOldVersions si,
            "LATEST_PROTO", showB $ latestReleaseVersion si
            ]


processAction (ProtocolError msg) = do
    chan <- client's sendChan
    processAction $ AnswerClients [chan] ["ERROR", msg]


processAction (Warning msg) = do
    chan <- client's sendChan
    processAction $ AnswerClients [chan] ["WARNING", msg]

processAction (NoticeMessage n) = do
    chan <- client's sendChan
    processAction $ AnswerClients [chan] ["NOTICE", showB . fromEnum $ n]

processAction (ByeClient msg) = do
    (Just ci) <- gets clientIndex
    ri <- clientRoomA

    chan <- client's sendChan
    clNick <- client's nick
    loggedIn <- client's isVisible

    when (ri /= lobbyId) $ do
        processAction $ MoveToLobby ("quit: " `B.append` msg)
        return ()

    clientsChans <- liftM (Prelude.map sendChan . Prelude.filter isVisible) $! allClientsS
    io $
        infoM "Clients" (show ci ++ " quits: " ++ B.unpack msg)

    when loggedIn $ processAction $ AnswerClients clientsChans ["LOBBY:LEFT", clNick, msg]

    mapM_ processAction
        [
        AnswerClients [chan] ["BYE", msg]
        , ModifyClient (\c -> c{nick = "", isVisible = False}) -- this will effectively hide client from others while he isn't deleted from list
        ]

    s <- get
    put $! s{removedClients = ci `Set.insert` removedClients s}

processAction (DeleteClient ci) = do
    io $ debugM "Clients"  $ "DeleteClient: " ++ show ci

    rnc <- gets roomsClients
    io $ removeClient rnc ci

    s <- get
    put $! s{removedClients = ci `Set.delete` removedClients s}

    sp <- gets (shutdownPending . serverInfo)
    cls <- allClientsS
    io $ when (sp && null cls) $ throwIO ShutdownException

processAction (ModifyClient f) = do
    (Just ci) <- gets clientIndex
    rnc <- gets roomsClients
    io $ modifyClient rnc f ci
    return ()

processAction (ModifyClient2 ci f) = do
    rnc <- gets roomsClients
    io $ modifyClient rnc f ci
    return ()

processAction (ModifyRoomClients f) = do
    rnc <- gets roomsClients
    ri <- clientRoomA
    roomClIDs <- io $ roomClientsIndicesM rnc ri
    io $ mapM_ (modifyClient rnc f) roomClIDs


processAction (ModifyRoom f) = do
    rnc <- gets roomsClients
    ri <- clientRoomA
    io $ modifyRoom rnc f ri
    return ()


processAction (ModifyServerInfo f) = do
    modify (\s -> s{serverInfo = f $ serverInfo s})
    si <- gets serverInfo
    io $ writeServerConfig si


processAction (MoveToRoom ri) = do
    (Just ci) <- gets clientIndex
    rnc <- gets roomsClients

    io $ do
        modifyClient rnc (\cl -> cl{teamsInGame = 0, isReady = False, isMaster = False, isInGame = False}) ci
        modifyRoom rnc (\r -> r{playersIn = playersIn r + 1}) ri
        moveClientToRoom rnc ri ci

    chans <- liftM (map sendChan) $ roomClientsS ri
    clNick <- client's nick

    processAction $ AnswerClients chans ["JOINED", clNick]


processAction (MoveToLobby msg) = do
    (Just ci) <- gets clientIndex
    ri <- clientRoomA
    rnc <- gets roomsClients
    playersNum <- io $ room'sM rnc playersIn ri
    master <- client's isMaster
--    client <- client's id
    clNick <- client's nick
    chans <- othersChans

    if master then
        if playersNum > 1 then
            mapM_ processAction [ChangeMaster Nothing, NoticeMessage AdminLeft, RemoveClientTeams ci, AnswerClients chans ["LEFT", clNick, msg]]
            else
            processAction RemoveRoom
        else
        mapM_ processAction [RemoveClientTeams ci, AnswerClients chans ["LEFT", clNick, msg]]

    -- when not removing room
    ready <- client's isReady
    when (not master || playersNum > 1) . io $ do
        modifyRoom rnc (\r -> r{
                playersIn = playersIn r - 1,
                readyPlayers = if ready then readyPlayers r - 1 else readyPlayers r
                }) ri
        moveClientToLobby rnc ci


processAction (ChangeMaster delegateId)= do
    (Just ci) <- gets clientIndex
    proto <- client's clientProto
    ri <- clientRoomA
    rnc <- gets roomsClients
    newMasterId <- liftM (\ids -> fromMaybe (last . filter (/= ci) $ ids) delegateId) . io $ roomClientsIndicesM rnc ri
    newMaster <- io $ client'sM rnc id newMasterId
    oldRoomName <- io $ room'sM rnc name ri
    oldMaster <- client's nick
    kicked <- client's isKickedFromServer
    thisRoomChans <- liftM (map sendChan) $ roomClientsS ri
    let newRoomName = if (proto < 42) || kicked then nick newMaster else oldRoomName
    mapM_ processAction [
        ModifyRoom (\r -> r{masterID = newMasterId
                , name = newRoomName
                , isRestrictedJoins = False
                , isRestrictedTeams = False
                , isRegisteredOnly = False
                , readyPlayers = if isReady newMaster then readyPlayers r else readyPlayers r + 1})
        , ModifyClient2 newMasterId (\c -> c{isMaster = True, isReady = True})
        , AnswerClients [sendChan newMaster] ["ROOM_CONTROL_ACCESS", "1"]
        , AnswerClients thisRoomChans ["CLIENT_FLAGS", "-h", oldMaster]
        , AnswerClients thisRoomChans ["CLIENT_FLAGS", "+hr", nick newMaster]
        ]

    newRoom' <- io $ room'sM rnc id ri
    chans <- liftM (map sendChan) $! sameProtoClientsS proto
    processAction $ AnswerClients chans ("ROOM" : "UPD" : oldRoomName : roomInfo (nick newMaster) newRoom')


processAction (AddRoom roomName roomPassword) = do
    Just clId <- gets clientIndex
    rnc <- gets roomsClients
    proto <- client's clientProto
    n <- client's nick

    let rm = newRoom{
            masterID = clId,
            name = roomName,
            password = roomPassword,
            roomProto = proto
            }

    rId <- io $ addRoom rnc rm

    processAction $ MoveToRoom rId

    chans <- liftM (map sendChan) $! sameProtoClientsS proto

    mapM_ processAction [
      AnswerClients chans ("ROOM" : "ADD" : roomInfo n rm{playersIn = 1})
        ]


processAction RemoveRoom = do
    Just clId <- gets clientIndex
    rnc <- gets roomsClients
    ri <- io $ clientRoomM rnc clId
    roomName <- io $ room'sM rnc name ri
    others <- othersChans
    proto <- client's clientProto
    chans <- liftM (map sendChan) $! sameProtoClientsS proto

    mapM_ processAction [
            AnswerClients chans ["ROOM", "DEL", roomName],
            AnswerClients others ["ROOMABANDONED", roomName]
        ]

    io $ removeRoom rnc ri


processAction SendUpdateOnThisRoom = do
    Just clId <- gets clientIndex
    proto <- client's clientProto
    rnc <- gets roomsClients
    ri <- io $ clientRoomM rnc clId
    rm <- io $ room'sM rnc id ri
    n <- io $ client'sM rnc nick (masterID rm)
    chans <- liftM (map sendChan) $! sameProtoClientsS proto
    processAction $ AnswerClients chans ("ROOM" : "UPD" : name rm : roomInfo n rm)


processAction UnreadyRoomClients = do
    ri <- clientRoomA
    roomPlayers <- roomClientsS ri
    pr <- client's clientProto
    mapM_ processAction [
        AnswerClients (map sendChan roomPlayers) $ notReadyMessage pr . map nick . filter (not . isMaster) $ roomPlayers
        , ModifyRoomClients (\cl -> cl{isReady = isMaster cl})
        , ModifyRoom (\r -> r{readyPlayers = 1})
        ]
    where
        notReadyMessage p nicks = if p < 38 then "NOT_READY" : nicks else "CLIENT_FLAGS" : "-r" : nicks


processAction FinishGame = do
    rnc <- gets roomsClients
    ri <- clientRoomA
    thisRoomChans <- liftM (map sendChan) $ roomClientsS ri
    answerRemovedTeams <- io $
         room'sM rnc (map (\t -> AnswerClients thisRoomChans ["REMOVE_TEAM", t]) . leftTeams . fromJust . gameInfo) ri

    mapM_ processAction $
        SaveReplay
        : ModifyRoom
            (\r -> r{
                gameInfo = Nothing,
                readyPlayers = 0
                }
            )
        : UnreadyRoomClients
        : SendUpdateOnThisRoom
        : AnswerClients thisRoomChans ["ROUND_FINISHED"]
        : answerRemovedTeams


processAction (SendTeamRemovalMessage teamName) = do
    chans <- othersChans
    mapM_ processAction [
        AnswerClients chans ["EM", rmTeamMsg],
        ModifyRoom (\r -> r{
                gameInfo = liftM (\g -> g{
                    teamsInGameNumber = teamsInGameNumber g - 1
                    , roundMsgs = rmTeamMsg : roundMsgs g
                }) $ gameInfo r
            })
        ]

    rnc <- gets roomsClients
    ri <- clientRoomA
    gi <- io $ room'sM rnc gameInfo ri
    when (0 == teamsInGameNumber (fromJust gi)) $
        processAction FinishGame
    where
        rmTeamMsg = toEngineMsg $ 'F' `B.cons` teamName


processAction (RemoveTeam teamName) = do
    rnc <- gets roomsClients
    ri <- clientRoomA
    inGame <- io $ room'sM rnc (isJust . gameInfo) ri
    chans <- othersChans
    mapM_ processAction $
        ModifyRoom (\r -> r{
            teams = Prelude.filter (\t -> teamName /= teamname t) $ teams r
            , gameInfo = liftM (\g -> g{leftTeams = teamName : leftTeams g}) $ gameInfo r
            })
        : SendUpdateOnThisRoom
        : AnswerClients chans ["REMOVE_TEAM", teamName]
        : [SendTeamRemovalMessage teamName | inGame]


processAction (RemoveClientTeams clId) = do
    rnc <- gets roomsClients

    removeTeamActions <- io $ do
        clNick <- client'sM rnc nick clId
        rId <- clientRoomM rnc clId
        roomTeams <- room'sM rnc teams rId
        return . Prelude.map (RemoveTeam . teamname) . Prelude.filter (\t -> teamowner t == clNick) $ roomTeams

    mapM_ processAction removeTeamActions



processAction CheckRegistered = do
    (Just ci) <- gets clientIndex
    n <- client's nick
    h <- client's host
    p <- client's clientProto
    checker <- client's isChecker
    uid <- client's clUID
    -- allow multiple checker logins
    haveSameNick <- liftM (not . null . tail . filter (\c -> (not $ isChecker c) && caseInsensitiveCompare (nick c) n)) allClientsS
    if haveSameNick && (not checker) then
        if p < 38 then
            processAction $ ByeClient $ loc "Nickname is already in use"
            else
            processAction $ NoticeMessage NickAlreadyInUse
        else
        do
        db <- gets (dbQueries . serverInfo)
        io $ writeChan db $ CheckAccount ci (hashUnique uid) n h
        return ()

processAction ClearAccountsCache = do
    dbq <- gets (dbQueries . serverInfo)
    io $ writeChan dbq ClearCache
    return ()


processAction (ProcessAccountInfo info) = do
    case info of
        HasAccount passwd isAdmin -> do
            b <- isBanned
            c <- client's isChecker
            when (not b) $ (if c then checkerLogin else playerLogin) passwd isAdmin
        Guest -> do
            b <- isBanned
            when (not b) $
                processAction JoinLobby
        Admin -> do
            mapM_ processAction [ModifyClient (\cl -> cl{isAdministrator = True}), JoinLobby]
            chan <- client's sendChan
            processAction $ AnswerClients [chan] ["ADMIN_ACCESS"]
    where
    isBanned = do
        processAction $ CheckBanned False
        liftM B.null $ client's nick
    checkerLogin _ False = processAction $ ByeClient $ loc "No checker rights"
    checkerLogin p True = do
        wp <- client's webPassword
        processAction $
            if wp == p then ModifyClient $ \c -> c{logonPassed = True} else ByeClient $ loc "Authentication failed"
    playerLogin p a = do
        chan <- client's sendChan
        mapM_ processAction [AnswerClients [chan] ["ASKPASSWORD"], ModifyClient (\c -> c{webPassword = p, isAdministrator = a})]

processAction JoinLobby = do
    chan <- client's sendChan
    clientNick <- client's nick
    isAuthenticated <- liftM (not . B.null) $ client's webPassword
    isAdmin <- client's isAdministrator
    loggedInClients <- liftM (Prelude.filter isVisible) $! allClientsS
    let (lobbyNicks, clientsChans) = unzip . L.map (nick &&& sendChan) $ loggedInClients
    let authenticatedNicks = L.map nick . L.filter (not . B.null . webPassword) $ loggedInClients
    let adminsNicks = L.map nick . L.filter isAdministrator $ loggedInClients
    let clFlags = B.concat . L.concat $ [["u" | isAuthenticated], ["a" | isAdmin]]
    mapM_ processAction . concat $ [
        [AnswerClients clientsChans ["LOBBY:JOINED", clientNick]]
        , [AnswerClients [chan] ("LOBBY:JOINED" : clientNick : lobbyNicks)]
        , [AnswerClients [chan] ("CLIENT_FLAGS" : "+u" : authenticatedNicks) | not $ null authenticatedNicks]
        , [AnswerClients [chan] ("CLIENT_FLAGS" : "+a" : adminsNicks) | not $ null adminsNicks]
        , [AnswerClients (chan : clientsChans) ["CLIENT_FLAGS",  B.concat["+" , clFlags], clientNick] | not $ B.null clFlags]
        , [ModifyClient (\cl -> cl{logonPassed = True, isVisible = True})]
        , [SendServerMessage]
        ]


processAction (KickClient kickId) = do
    modify (\s -> s{clientIndex = Just kickId})
    clHost <- client's host
    currentTime <- io getCurrentTime
    mapM_ processAction [
        AddIP2Bans clHost (loc "60 seconds cooldown after kick") (addUTCTime 60 currentTime)
        , ModifyClient (\c -> c{isKickedFromServer = True})
        , ByeClient "Kicked"
        ]


processAction (BanClient seconds reason banId) = do
    modify (\s -> s{clientIndex = Just banId})
    clHost <- client's host
    currentTime <- io getCurrentTime
    let msg = B.concat ["Ban for ", B.pack . show $ seconds, " (", reason, ")"]
    mapM_ processAction [
        AddIP2Bans clHost msg (addUTCTime seconds currentTime)
        , KickClient banId
        ]


processAction (BanIP ip seconds reason) = do
    currentTime <- io getCurrentTime
    let msg = B.concat ["Ban for ", B.pack . show $ seconds, " (", reason, ")"]
    processAction $
        AddIP2Bans ip msg (addUTCTime seconds currentTime)


processAction (BanNick n seconds reason) = do
    currentTime <- io getCurrentTime
    let msg = 
            if seconds > 60 * 60 * 24 * 365 then
                B.concat ["Permanent ban (", reason, ")"]
                else
                B.concat ["Ban for ", B.pack . show $ seconds, " (", reason, ")"]
    processAction $
        AddNick2Bans n msg (addUTCTime seconds currentTime)


processAction BanList = do
    time <- io $ getCurrentTime
    ch <- client's sendChan
    b <- gets (B.intercalate "\n" . concatMap (ban2Str time) . bans . serverInfo)
    processAction $
        AnswerClients [ch] ["BANLIST", b]
    where
        ban2Str time (BanByIP b r t) = ["I", b, r, B.pack . show $ t `diffUTCTime` time]
        ban2Str time (BanByNick b r t) = ["N", b, r, B.pack . show $ t `diffUTCTime` time]


processAction (Unban entry) = do
    processAction $ ModifyServerInfo (\s -> s{bans = filter (not . f) $ bans s})
    where
        f (BanByIP bip _ _) = bip == entry
        f (BanByNick bn _ _) = bn == entry


processAction (KickRoomClient kickId) = do
    modify (\s -> s{clientIndex = Just kickId})
    ch <- client's sendChan
    mapM_ processAction [AnswerClients [ch] ["KICKED"], MoveToLobby $ loc "kicked"]


processAction (AddClient cl) = do
    rnc <- gets roomsClients
    si <- gets serverInfo
    newClId <- io $ do
        ci <- addClient rnc cl
        _ <- Exception.mask (forkIO . clientRecvLoop (clientSocket cl) (coreChan si) (sendChan cl) ci)

        infoM "Clients" (show ci ++ ": New client. Time: " ++ show (connectTime cl))

        return ci

    modify (\s -> s{clientIndex = Just newClId})
    mapM_ processAction
        [
            AnswerClients [sendChan cl] ["CONNECTED", "Hedgewars server http://www.hedgewars.org/", serverVersion]
            , CheckBanned True
            , AddIP2Bans (host cl) "Reconnected too fast" (addUTCTime 10 $ connectTime cl)
        ]


processAction (AddNick2Bans n reason expiring) = do
    processAction $ ModifyServerInfo (\s -> s{bans = BanByNick n reason expiring : bans s})

processAction (AddIP2Bans ip reason expiring) = do
    (Just ci) <- gets clientIndex
    rc <- gets removedClients
    when (not $ ci `Set.member` rc)
        $ processAction $ ModifyServerInfo (\s -> s{bans = BanByIP ip reason expiring : bans s})

processAction (CheckBanned byIP) = do
    clTime <- client's connectTime
    clNick <- client's nick
    clHost <- client's host
    si <- gets serverInfo
    let validBans = filter (checkNotExpired clTime) $ bans si
    let ban = L.find (checkBan byIP clHost clNick) $ validBans
    mapM_ processAction $
        ModifyServerInfo (\s -> s{bans = validBans})
        : [ByeClient (getBanReason $ fromJust ban) | isJust ban]
    where
        checkNotExpired testTime (BanByIP _ _ time) = testTime `diffUTCTime` time <= 0
        checkNotExpired testTime (BanByNick _ _ time) = testTime `diffUTCTime` time <= 0
        checkBan True ip _ (BanByIP bip _ _) = bip `B.isPrefixOf` ip
        checkBan False _ n (BanByNick bn _ _) = caseInsensitiveCompare bn n
        checkBan _ _ _ _ = False
        getBanReason (BanByIP _ msg _) = msg
        getBanReason (BanByNick _ msg _) = msg

processAction PingAll = do
    rnc <- gets roomsClients
    io (allClientsM rnc) >>= mapM_ (kickTimeouted rnc)
    cis <- io $ allClientsM rnc
    chans <- io $ mapM (client'sM rnc sendChan) cis
    io $ mapM_ (modifyClient rnc (\cl -> cl{pingsQueue = pingsQueue cl + 1})) cis
    processAction $ AnswerClients chans ["PING"]
    where
        kickTimeouted rnc ci = do
            pq <- io $ client'sM rnc pingsQueue ci
            when (pq > 0) $ do
                withStateT (\as -> as{clientIndex = Just ci}) $
                    processAction (ByeClient $ loc "Ping timeout")
--                when (pq > 1) $
--                    processAction $ DeleteClient ci -- smth went wrong with client io threads, issue DeleteClient here


processAction StatsAction = do
    si <- gets serverInfo
    when (not $ shutdownPending si) $ do
        rnc <- gets roomsClients
        (roomsNum, clientsNum) <- io $ withRoomsAndClients rnc st
        io $ writeChan (dbQueries si) $ SendStats clientsNum (roomsNum - 1)
    where
          st irnc = (length $ allRooms irnc, length $ allClients irnc)

processAction RestartServer = do
    sp <- gets (shutdownPending . serverInfo)
    when (not sp) $ do
        sock <- gets (fromJust . serverSocket . serverInfo)
        args <- gets (runArgs . serverInfo)
        io $ do
            noticeM "Core" "Closing listening socket"
            sClose sock
            noticeM "Core" "Spawning new server"
            _ <- createProcess (proc "./hedgewars-server" args)
            return ()
        processAction $ ModifyServerInfo (\s -> s{shutdownPending = True})

processAction Stats = do
    cls <- allClientsS
    let stats = versions cls
    processAction $ Warning stats
    where
        versions = B.concat . ((:) "<table border=1>") . (flip (++) ["</table>"])
            . concatMap (\(p, n :: Int) -> ["<tr><td>", protoNumber2ver p, "</td><td>", showB n, "</td></tr>"])
            . Map.toList . Map.fromListWith (+) . map (\c -> (clientProto c, 1))

#if defined(OFFICIAL_SERVER)
processAction SaveReplay = do
    ri <- clientRoomA
    rnc <- gets roomsClients

    io $ do
        r <- room'sM rnc id ri
        saveReplay r
#else
processAction SaveReplay = return ()
#endif