gameServer/Actions.hs
author koda
Fri, 13 Aug 2010 02:44:44 +0200
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better to do that in this way
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{-# LANGUAGE OverloadedStrings #-}
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module Actions where
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import Control.Concurrent
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import Control.Concurrent.Chan
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import qualified Data.IntSet as IntSet
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import qualified Data.Set as Set
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import qualified Data.Sequence as Seq
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import System.Log.Logger
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import Control.Monad
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import Data.Time
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import Data.Maybe
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import Control.Monad.Reader
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import Control.Monad.State
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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 ClientIO
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import ServerState
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data Action =
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    AnswerClients ![ClientChan] ![B.ByteString]
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    | SendServerMessage
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    | SendServerVars
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    | MoveToRoom RoomIndex
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    | MoveToLobby B.ByteString
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    | RemoveTeam B.ByteString
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    | RemoveRoom
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    | UnreadyRoomClients
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    | JoinLobby
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    | ProtocolError B.ByteString
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    | Warning B.ByteString
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    | ByeClient B.ByteString
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    | KickClient ClientIndex
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    | KickRoomClient ClientIndex
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    | BanClient B.ByteString -- nick
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    | RemoveClientTeams ClientIndex
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    | ModifyClient (ClientInfo -> ClientInfo)
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    | ModifyClient2 ClientIndex (ClientInfo -> ClientInfo)
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    | ModifyRoom (RoomInfo -> RoomInfo)
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    | ModifyServerInfo (ServerInfo -> ServerInfo)
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    | AddRoom B.ByteString B.ByteString
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    | CheckRegistered
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    | ClearAccountsCache
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    | ProcessAccountInfo AccountInfo
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    | Dump
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    | AddClient ClientInfo
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    | DeleteClient ClientIndex
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    | PingAll
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    | StatsAction
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type CmdHandler = [B.ByteString] -> Reader (ClientIndex, IRnC) [Action]
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processAction :: Action -> StateT ServerState IO ()
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processAction (AnswerClients chans msg) = do
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    liftIO (putStr $ "AnswerClients... " ++ (show $ length chans) ++ " (" ++ (show msg) ++")")
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    liftIO $ map (flip seq ()) chans `seq` mapM_ (flip writeChan msg) chans
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    liftIO (putStrLn "done")
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processAction SendServerMessage = do
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    chan <- client's sendChan
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    protonum <- client's clientProto
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    si <- liftM serverInfo get
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    let message = if protonum < latestReleaseVersion si then
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            serverMessageForOldVersions si
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            else
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            serverMessage si
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    processAction $ AnswerClients [chan] ["SERVER_MESSAGE", message]
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{-
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processAction (clID, serverInfo, rnc) SendServerVars = do
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    writeChan (sendChan $ clients ! clID) ("SERVER_VARS" : vars)
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    return (clID, serverInfo, rnc)
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    where
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        client = clients ! clID
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        vars = [
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            "MOTD_NEW", serverMessage serverInfo,
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            "MOTD_OLD", serverMessageForOldVersions serverInfo,
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            "LATEST_PROTO", show $ latestReleaseVersion serverInfo
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            ]
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-}
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processAction (ProtocolError msg) = do
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    chan <- client's sendChan
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    processAction $ AnswerClients [chan] ["ERROR", msg]
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processAction (Warning msg) = do
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    chan <- client's sendChan
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    processAction $ AnswerClients [chan] ["WARNING", msg]
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processAction (ByeClient msg) = do
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    (Just ci) <- gets clientIndex
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    rnc <- gets roomsClients
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    ri <- clientRoomA
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    when (ri /= lobbyId) $ do
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        processAction $ MoveToLobby ("quit: " `B.append` msg)
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        return ()
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    chan <- client's sendChan
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    ready <- client's isReady
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    liftIO $ do
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        infoM "Clients" (show ci ++ " quits: " ++ (B.unpack msg))
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        --mapM_ (processAction (ci, serverInfo, rnc)) $ answerOthersQuit ++ answerInformRoom
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        modifyRoom rnc (\r -> r{
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                        --playersIDs = IntSet.delete ci (playersIDs r)
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                        playersIn = (playersIn r) - 1,
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                        readyPlayers = if ready then readyPlayers r - 1 else readyPlayers r
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                        }) ri
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    processAction $ AnswerClients [chan] ["BYE", msg]
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    modify (\s -> s{removedClients = ci `Set.insert` removedClients s})
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processAction (DeleteClient ci) = do
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    rnc <- gets roomsClients
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    liftIO $ removeClient rnc ci
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    modify (\s -> s{removedClients = ci `Set.delete` removedClients s})
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{-
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    where
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        client = clients ! clID
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        clientNick = nick client
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        answerInformRoom =
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            if roomID client /= 0 then
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                if not $ Prelude.null msg then
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                    [AnswerThisRoom ["LEFT", clientNick, msg]]
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                else
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                    [AnswerThisRoom ["LEFT", clientNick]]
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            else
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                []
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        answerOthersQuit =
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            if logonPassed client then
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                if not $ Prelude.null msg then
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                    [AnswerAll ["LOBBY:LEFT", clientNick, msg]]
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                else
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                    [AnswerAll ["LOBBY:LEFT", clientNick]]
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            else
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            [] 
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-}
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processAction (ModifyClient f) = do
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    (Just ci) <- gets clientIndex
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    rnc <- gets roomsClients
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    liftIO $ modifyClient rnc f ci
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    return ()
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processAction (ModifyClient2 ci f) = do
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    rnc <- gets roomsClients
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    liftIO $ modifyClient rnc f ci
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    return ()
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processAction (ModifyRoom f) = do
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    rnc <- gets roomsClients
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    ri <- clientRoomA
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    liftIO $ modifyRoom rnc f ri
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    return ()
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{-
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processAction (clID, serverInfo, rnc) (ModifyServerInfo func) =
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    return (clID, func serverInfo, rnc)
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-}
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processAction (MoveToRoom ri) = do
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    (Just ci) <- gets clientIndex
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    rnc <- gets roomsClients
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    liftIO $ do
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        modifyClient rnc (\cl -> cl{teamsInGame = 0}) ci
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        modifyRoom rnc (\r -> r{playersIn = (playersIn r) + 1}) ri
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    liftIO $ moveClientToRoom rnc ri ci
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    chans <- liftM (map sendChan) $ roomClientsS ri
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    clNick <- client's nick
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    processAction $ AnswerClients chans ["JOINED", clNick]
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processAction (MoveToLobby msg) = do
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    (Just ci) <- gets clientIndex
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    --ri <- clientRoomA
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    rnc <- gets roomsClients
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    liftIO $ moveClientToLobby rnc ci
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{-
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    (_, _, newClients, newRooms) <-
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            if isMaster client then
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                if (gameinprogress room) && (playersIn room > 1) then
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                    (changeMaster >>= (\state -> foldM processAction state
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                        [AnswerOthersInRoom ["LEFT", nick client, msg],
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                        AnswerOthersInRoom ["WARNING", "Admin left the room"],
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                        RemoveClientTeams clID]))
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                else -- not in game
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                    processAction (clID, serverInfo, rnc) RemoveRoom
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            else -- not master
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                foldM
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                    processAction
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                        (clID, serverInfo, rnc)
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                        [AnswerOthersInRoom ["LEFT", nick client, msg],
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                        RemoveClientTeams clID]
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    return (
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        clID,
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        serverInfo,
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        adjust resetClientFlags clID newClients,
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        adjust removeClientFromRoom rID $ adjust insertClientToRoom 0 newRooms
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        )
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    where
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        rID = roomID client
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        client = clients ! clID
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        room = rooms ! rID
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        resetClientFlags cl = cl{roomID = 0, isMaster = False, isReady = False, teamsInGame = undefined}
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        removeClientFromRoom r = r{
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                playersIDs = otherPlayersSet,
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                playersIn = (playersIn r) - 1,
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                readyPlayers = if isReady client then (readyPlayers r) - 1 else readyPlayers r
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                }
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        insertClientToRoom r = r{playersIDs = IntSet.insert clID (playersIDs r)}
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        changeMaster = do
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            processAction (newMasterId, serverInfo, rnc) $ AnswerThisClient ["ROOM_CONTROL_ACCESS", "1"]
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            return (
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                clID,
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                serverInfo,
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                adjust (\cl -> cl{isMaster = True}) newMasterId clients,
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                adjust (\r -> r{masterID = newMasterId, name = newRoomName}) rID rooms
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                )
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        newRoomName = nick newMasterClient
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        otherPlayersSet = IntSet.delete clID (playersIDs room)
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        newMasterId = IntSet.findMin otherPlayersSet
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        newMasterClient = clients ! newMasterId
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-}
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processAction (AddRoom roomName roomPassword) = do
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    Just clId <- gets clientIndex
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    rnc <- gets roomsClients
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    proto <- liftIO $ client'sM rnc clientProto clId
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    let room = newRoom{
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            masterID = clId,
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            name = roomName,
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            password = roomPassword,
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            roomProto = proto
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            }
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    rId <- liftIO $ addRoom rnc room
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    processAction $ MoveToRoom rId
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    chans <- liftM (map sendChan) $ roomClientsS lobbyId
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    mapM_ processAction [
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        AnswerClients chans ["ROOM", "ADD", roomName]
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        , ModifyClient (\cl -> cl{isMaster = True})
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        ]
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{-
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processAction (clID, serverInfo, rnc) (RemoveRoom) = do
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    processAction (clID, serverInfo, rnc) $ AnswerLobby ["ROOM", "DEL", name room]
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    processAction (clID, serverInfo, rnc) $ AnswerOthersInRoom ["ROOMABANDONED", name room]
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    return (clID,
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        serverInfo,
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        Data.IntMap.map (\cl -> if roomID cl == rID then cl{roomID = 0, isMaster = False, isReady = False, teamsInGame = undefined} else cl) clients,
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        delete rID $ adjust (\r -> r{playersIDs = IntSet.union (playersIDs room) (playersIDs r)}) 0 rooms
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        )
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    where
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        room = rooms ! rID
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        rID = roomID client
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        client = clients ! clID
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-}
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processAction (UnreadyRoomClients) = do
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    rnc <- gets roomsClients
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    ri <- clientRoomA
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    roomPlayers <- roomClientsS ri
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    roomClIDs <- liftIO $ roomClientsIndicesM rnc ri
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    processAction $ AnswerClients (map sendChan roomPlayers) ("NOT_READY" : map nick roomPlayers)
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    liftIO $ mapM_ (modifyClient rnc (\cl -> cl{isReady = False})) roomClIDs
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    processAction $ ModifyRoom (\r -> r{readyPlayers = 0})
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processAction (RemoveTeam teamName) = do
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    rnc <- gets roomsClients
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    cl <- client's id
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    ri <- clientRoomA
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    inGame <- liftIO $ room'sM rnc gameinprogress ri
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    chans <- liftM (map sendChan . filter (/= cl)) $ roomClientsS ri
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    if inGame then
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            mapM_ processAction [
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                AnswerClients chans ["REMOVE_TEAM", teamName],
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                ModifyRoom (\r -> r{teams = Prelude.filter (\t -> teamName /= teamname t) $ teams r})
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                ]
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        else
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            mapM_ processAction [
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                AnswerClients chans ["EM", rmTeamMsg],
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                ModifyRoom (\r -> r{
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                    teams = Prelude.filter (\t -> teamName /= teamname t) $ teams r,
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                    leftTeams = teamName : leftTeams r,
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                    roundMsgs = roundMsgs r Seq.|> rmTeamMsg
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                    })
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                ]
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    where
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        rmTeamMsg = toEngineMsg $ (B.singleton 'F') `B.append` teamName
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processAction CheckRegistered = do
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    (Just ci) <- gets clientIndex
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    n <- client's nick
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    h <- client's host
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    db <- gets (dbQueries . serverInfo)
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    liftIO $ writeChan db $ CheckAccount ci n h
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    return ()
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   323
3458
11cd56019f00 Make some more protocol commands work
unc0rr
parents: 3452
diff changeset
   324
{-
3425
ead2ed20dfd4 Start the server refactoring
unc0rr
parents: 3283
diff changeset
   325
processAction (clID, serverInfo, rnc) (ClearAccountsCache) = do
2867
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2662
diff changeset
   326
    writeChan (dbQueries serverInfo) ClearCache
3425
ead2ed20dfd4 Start the server refactoring
unc0rr
parents: 3283
diff changeset
   327
    return (clID, serverInfo, rnc)
2867
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2662
diff changeset
   328
    where
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2662
diff changeset
   329
        client = clients ! clID
2155
d897222d3339 Implement ability for server admin to clear accounts cache
unc0rr
parents: 2126
diff changeset
   330
d897222d3339 Implement ability for server admin to clear accounts cache
unc0rr
parents: 2126
diff changeset
   331
3425
ead2ed20dfd4 Start the server refactoring
unc0rr
parents: 3283
diff changeset
   332
processAction (clID, serverInfo, rnc) (Dump) = do
2867
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2662
diff changeset
   333
    writeChan (sendChan $ clients ! clID) ["DUMP", show serverInfo, showTree clients, showTree rooms]
3425
ead2ed20dfd4 Start the server refactoring
unc0rr
parents: 3283
diff changeset
   334
    return (clID, serverInfo, rnc)
3501
a3159a410e5c Reimplement more core actions
unc0rr
parents: 3500
diff changeset
   335
-}
1841
fba7210b438b Retrieve client password from web database and ask for it
unc0rr
parents: 1839
diff changeset
   336
3501
a3159a410e5c Reimplement more core actions
unc0rr
parents: 3500
diff changeset
   337
processAction (ProcessAccountInfo info) =
2867
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2662
diff changeset
   338
    case info of
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2662
diff changeset
   339
        HasAccount passwd isAdmin -> do
3501
a3159a410e5c Reimplement more core actions
unc0rr
parents: 3500
diff changeset
   340
            chan <- client's sendChan
3673
45778b16b224 Some comments on the reason of the bug, leave bug not fixed yet
unc0rr
parents: 3671
diff changeset
   341
            processAction $ AnswerClients [chan] ["ASKPASSWORD"]
2867
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2662
diff changeset
   342
        Guest -> do
3502
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   343
            processAction JoinLobby
2867
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2662
diff changeset
   344
        Admin -> do
3502
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   345
            mapM processAction [ModifyClient (\cl -> cl{isAdministrator = True}), JoinLobby]
3501
a3159a410e5c Reimplement more core actions
unc0rr
parents: 3500
diff changeset
   346
            chan <- client's sendChan
3673
45778b16b224 Some comments on the reason of the bug, leave bug not fixed yet
unc0rr
parents: 3671
diff changeset
   347
            processAction $ AnswerClients [chan] ["ADMIN_ACCESS"]
1841
fba7210b438b Retrieve client password from web database and ask for it
unc0rr
parents: 1839
diff changeset
   348
3502
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   349
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   350
processAction JoinLobby = do
3501
a3159a410e5c Reimplement more core actions
unc0rr
parents: 3500
diff changeset
   351
    chan <- client's sendChan
3502
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   352
    clientNick <- client's nick
3566
772a46ef8288 Properly handle client exit
unc0rr
parents: 3531
diff changeset
   353
    (lobbyNicks, clientsChans) <- liftM (unzip . Prelude.map (\c -> (nick c, sendChan c)) . Prelude.filter logonPassed) $! allClientsS
3501
a3159a410e5c Reimplement more core actions
unc0rr
parents: 3500
diff changeset
   354
    mapM_ processAction $
3502
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   355
        (AnswerClients clientsChans ["LOBBY:JOINED", clientNick])
3566
772a46ef8288 Properly handle client exit
unc0rr
parents: 3531
diff changeset
   356
        : [AnswerClients [chan] ("LOBBY:JOINED" : clientNick : lobbyNicks)]
3502
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   357
        ++ [ModifyClient (\cl -> cl{logonPassed = True}), SendServerMessage]
2118
0ebcc98ebc1a Send server message after nicks info (more chance for it to be seen)
unc0rr
parents: 2116
diff changeset
   358
3501
a3159a410e5c Reimplement more core actions
unc0rr
parents: 3500
diff changeset
   359
{-
3502
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   360
processAction (clID, serverInfo, rnc) (RoomAddThisClient rID) =
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   361
    processAction (
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   362
        clID,
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   363
        serverInfo,
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   364
        adjust (\cl -> cl{roomID = rID, teamsInGame = if rID == 0 then teamsInGame cl else 0}) clID clients,
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   365
        adjust (\r -> r{playersIDs = IntSet.insert clID (playersIDs r), playersIn = (playersIn r) + 1}) rID $
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   366
            adjust (\r -> r{playersIDs = IntSet.delete clID (playersIDs r)}) 0 rooms
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   367
        ) joinMsg
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   368
    where
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   369
        client = clients ! clID
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   370
        joinMsg = if rID == 0 then
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   371
                AnswerAllOthers ["LOBBY:JOINED", nick client]
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   372
            else
ad38c653b7d9 Some more progress
unc0rr
parents: 3501
diff changeset
   373
                AnswerThisRoom ["JOINED", nick client]
1841
fba7210b438b Retrieve client password from web database and ask for it
unc0rr
parents: 1839
diff changeset
   374
3425
ead2ed20dfd4 Start the server refactoring
unc0rr
parents: 3283
diff changeset
   375
processAction (clID, serverInfo, rnc) (KickClient kickID) =
ead2ed20dfd4 Start the server refactoring
unc0rr
parents: 3283
diff changeset
   376
    liftM2 replaceID (return clID) (processAction (kickID, serverInfo, rnc) $ ByeClient "Kicked")
1879
bb114339eb4e Implement kick from room
unc0rr
parents: 1866
diff changeset
   377
1926
cb46fbdcaa41 Add simple DoS protection mechanism (although better than previous server had)
unc0rr
parents: 1925
diff changeset
   378
3425
ead2ed20dfd4 Start the server refactoring
unc0rr
parents: 3283
diff changeset
   379
processAction (clID, serverInfo, rnc) (BanClient banNick) =
ead2ed20dfd4 Start the server refactoring
unc0rr
parents: 3283
diff changeset
   380
    return (clID, serverInfo, rnc)
1921
2a09f7f786a0 - User from localhost is server admin
unc0rr
parents: 1879
diff changeset
   381
1879
bb114339eb4e Implement kick from room
unc0rr
parents: 1866
diff changeset
   382
3425
ead2ed20dfd4 Start the server refactoring
unc0rr
parents: 3283
diff changeset
   383
processAction (clID, serverInfo, rnc) (KickRoomClient kickID) = do
2867
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2662
diff changeset
   384
    writeChan (sendChan $ clients ! kickID) ["KICKED"]
3425
ead2ed20dfd4 Start the server refactoring
unc0rr
parents: 3283
diff changeset
   385
    liftM2 replaceID (return clID) (processAction (kickID, serverInfo, rnc) $ RoomRemoveThisClient "kicked")
1879
bb114339eb4e Implement kick from room
unc0rr
parents: 1866
diff changeset
   386
bb114339eb4e Implement kick from room
unc0rr
parents: 1866
diff changeset
   387
3425
ead2ed20dfd4 Start the server refactoring
unc0rr
parents: 3283
diff changeset
   388
processAction (clID, serverInfo, rnc) (RemoveClientTeams teamsClID) =
2867
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2662
diff changeset
   389
    liftM2 replaceID (return clID) $
3425
ead2ed20dfd4 Start the server refactoring
unc0rr
parents: 3283
diff changeset
   390
        foldM processAction (teamsClID, serverInfo, rnc) removeTeamsActions
2867
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2662
diff changeset
   391
    where
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2662
diff changeset
   392
        client = clients ! teamsClID
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2662
diff changeset
   393
        room = rooms ! (roomID client)
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2662
diff changeset
   394
        teamsToRemove = Prelude.filter (\t -> teamowner t == nick client) $ teams room
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2662
diff changeset
   395
        removeTeamsActions = Prelude.map (RemoveTeam . teamname) teamsToRemove
3435
4e4f88a7bdf2 Some more steps in refactoring
unc0rr
parents: 3425
diff changeset
   396
-}
1926
cb46fbdcaa41 Add simple DoS protection mechanism (although better than previous server had)
unc0rr
parents: 1925
diff changeset
   397
3451
62089ccec75c Uses StateT monad instead of manually maintaining the state
unc0rr
parents: 3436
diff changeset
   398
processAction (AddClient client) = do
62089ccec75c Uses StateT monad instead of manually maintaining the state
unc0rr
parents: 3436
diff changeset
   399
    rnc <- gets roomsClients
62089ccec75c Uses StateT monad instead of manually maintaining the state
unc0rr
parents: 3436
diff changeset
   400
    si <- gets serverInfo
62089ccec75c Uses StateT monad instead of manually maintaining the state
unc0rr
parents: 3436
diff changeset
   401
    liftIO $ do
62089ccec75c Uses StateT monad instead of manually maintaining the state
unc0rr
parents: 3436
diff changeset
   402
        ci <- addClient rnc client
3500
af8390d807d6 Use sockets instead of handles, use bytestrings instead of strings
unc0rr
parents: 3458
diff changeset
   403
        forkIO $ clientRecvLoop (clientSocket client) (coreChan si) ci
af8390d807d6 Use sockets instead of handles, use bytestrings instead of strings
unc0rr
parents: 3458
diff changeset
   404
        forkIO $ clientSendLoop (clientSocket client) (coreChan si) (sendChan client) ci
3451
62089ccec75c Uses StateT monad instead of manually maintaining the state
unc0rr
parents: 3436
diff changeset
   405
62089ccec75c Uses StateT monad instead of manually maintaining the state
unc0rr
parents: 3436
diff changeset
   406
        infoM "Clients" (show ci ++ ": New client. Time: " ++ show (connectTime client))
3425
ead2ed20dfd4 Start the server refactoring
unc0rr
parents: 3283
diff changeset
   407
3673
45778b16b224 Some comments on the reason of the bug, leave bug not fixed yet
unc0rr
parents: 3671
diff changeset
   408
    processAction $ AnswerClients [sendChan client] ["CONNECTED", "Hedgewars server http://www.hedgewars.org/"]
3451
62089ccec75c Uses StateT monad instead of manually maintaining the state
unc0rr
parents: 3436
diff changeset
   409
{-        let newLogins = takeWhile (\(_ , time) -> (connectTime client) `diffUTCTime` time <= 11) $ lastLogins serverInfo
1926
cb46fbdcaa41 Add simple DoS protection mechanism (although better than previous server had)
unc0rr
parents: 1925
diff changeset
   410
3451
62089ccec75c Uses StateT monad instead of manually maintaining the state
unc0rr
parents: 3436
diff changeset
   411
        if False && (isJust $ host client `Prelude.lookup` newLogins) then
62089ccec75c Uses StateT monad instead of manually maintaining the state
unc0rr
parents: 3436
diff changeset
   412
            processAction (ci, serverInfo{lastLogins = newLogins}, rnc) $ ByeClient "Reconnected too fast"
62089ccec75c Uses StateT monad instead of manually maintaining the state
unc0rr
parents: 3436
diff changeset
   413
            else
62089ccec75c Uses StateT monad instead of manually maintaining the state
unc0rr
parents: 3436
diff changeset
   414
            return (ci, serverInfo)
62089ccec75c Uses StateT monad instead of manually maintaining the state
unc0rr
parents: 3436
diff changeset
   415
-}
62089ccec75c Uses StateT monad instead of manually maintaining the state
unc0rr
parents: 3436
diff changeset
   416
62089ccec75c Uses StateT monad instead of manually maintaining the state
unc0rr
parents: 3436
diff changeset
   417
1927
e2031906a347 Ping clients every 30 seconds. Disconnection due to ping timeout to be implemented.
unc0rr
parents: 1926
diff changeset
   418
3654
18189fbc7530 Reimplement ping timeout
unc0rr
parents: 3653
diff changeset
   419
processAction PingAll = do
18189fbc7530 Reimplement ping timeout
unc0rr
parents: 3653
diff changeset
   420
    rnc <- gets roomsClients
3658
113cb9345be1 Make server stay alive when some clients get kicked
unc0rr
parents: 3656
diff changeset
   421
    liftIO (allClientsM rnc) >>= mapM_ (kickTimeouted rnc)
3654
18189fbc7530 Reimplement ping timeout
unc0rr
parents: 3653
diff changeset
   422
    cis <- liftIO $ allClientsM rnc
18189fbc7530 Reimplement ping timeout
unc0rr
parents: 3653
diff changeset
   423
    chans <- liftIO $ mapM (client'sM rnc sendChan) cis
18189fbc7530 Reimplement ping timeout
unc0rr
parents: 3653
diff changeset
   424
    liftIO $ mapM_ (modifyClient rnc (\cl -> cl{pingsQueue = pingsQueue cl + 1})) cis
18189fbc7530 Reimplement ping timeout
unc0rr
parents: 3653
diff changeset
   425
    processAction $ AnswerClients chans ["PING"]
2867
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2662
diff changeset
   426
    where
3654
18189fbc7530 Reimplement ping timeout
unc0rr
parents: 3653
diff changeset
   427
        kickTimeouted rnc ci = do
18189fbc7530 Reimplement ping timeout
unc0rr
parents: 3653
diff changeset
   428
            pq <- liftIO $ client'sM rnc pingsQueue ci
18189fbc7530 Reimplement ping timeout
unc0rr
parents: 3653
diff changeset
   429
            when (pq > 0) $
18189fbc7530 Reimplement ping timeout
unc0rr
parents: 3653
diff changeset
   430
                withStateT (\as -> as{clientIndex = Just ci}) $
18189fbc7530 Reimplement ping timeout
unc0rr
parents: 3653
diff changeset
   431
                    processAction (ByeClient "Ping timeout")
2172
80d34c0b9dfe Implement sending gameserver stats to webserver
unc0rr
parents: 2155
diff changeset
   432
80d34c0b9dfe Implement sending gameserver stats to webserver
unc0rr
parents: 2155
diff changeset
   433
3653
c0d94fedbd86 Reimplement statistics
unc0rr
parents: 3645
diff changeset
   434
processAction (StatsAction) = do
c0d94fedbd86 Reimplement statistics
unc0rr
parents: 3645
diff changeset
   435
    rnc <- gets roomsClients
c0d94fedbd86 Reimplement statistics
unc0rr
parents: 3645
diff changeset
   436
    si <- gets serverInfo
c0d94fedbd86 Reimplement statistics
unc0rr
parents: 3645
diff changeset
   437
    (roomsNum, clientsNum) <- liftIO $ withRoomsAndClients rnc stats
c0d94fedbd86 Reimplement statistics
unc0rr
parents: 3645
diff changeset
   438
    liftIO $ writeChan (dbQueries si) $ SendStats clientsNum (roomsNum - 1)
c0d94fedbd86 Reimplement statistics
unc0rr
parents: 3645
diff changeset
   439
    where
c0d94fedbd86 Reimplement statistics
unc0rr
parents: 3645
diff changeset
   440
          stats irnc = (length $ allRooms irnc, length $ allClients irnc)
3425
ead2ed20dfd4 Start the server refactoring
unc0rr
parents: 3283
diff changeset
   441