gameServer/Actions.hs
author nemo
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module Actions where
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import Control.Concurrent.STM
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import Control.Concurrent.Chan
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import Data.IntMap
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import qualified Data.IntSet as IntSet
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import qualified Data.Sequence as Seq
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import System.Log.Logger
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import Monad
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import Data.Time
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import Maybe
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-----------------------------
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import CoreTypes
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import Utils
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data Action =
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	AnswerThisClient [String]
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	| AnswerAll [String]
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	| AnswerAllOthers [String]
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	| AnswerThisRoom [String]
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	| AnswerOthersInRoom [String]
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	| AnswerLobby [String]
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	| SendServerMessage
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	| RoomAddThisClient Int -- roomID
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	| RoomRemoveThisClient String
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	| RemoveTeam String
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	| RemoveRoom
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	| UnreadyRoomClients
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	| MoveToLobby
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	| ProtocolError String
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	| Warning String
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	| ByeClient String
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	| KickClient Int -- clID
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	| KickRoomClient Int -- clID
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	| BanClient String -- nick
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	| RemoveClientTeams Int -- clID
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	| ModifyClient (ClientInfo -> ClientInfo)
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	| ModifyRoom (RoomInfo -> RoomInfo)
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	| ModifyServerInfo (ServerInfo -> ServerInfo)
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	| AddRoom String String
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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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	| PingAll
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	| StatsAction
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type CmdHandler = Int -> Clients -> Rooms -> [String] -> [Action]
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replaceID a (b, c, d, e) = (a, c, d, e)
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processAction :: (Int, ServerInfo, Clients, Rooms) -> Action -> IO (Int, ServerInfo, Clients, Rooms)
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processAction (clID, serverInfo, clients, rooms) (AnswerThisClient msg) = do
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	writeChan (sendChan $ clients ! clID) msg
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	return (clID, serverInfo, clients, rooms)
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processAction (clID, serverInfo, clients, rooms) (AnswerAll msg) = do
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	mapM_ (\cl -> writeChan (sendChan cl) msg) (elems clients)
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	return (clID, serverInfo, clients, rooms)
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processAction (clID, serverInfo, clients, rooms) (AnswerAllOthers msg) = do
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	mapM_ (\id -> writeChan (sendChan $ clients ! id) msg) $
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		Prelude.filter (\id' -> (id' /= clID) && (logonPassed $ clients ! id')) (keys clients)
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	return (clID, serverInfo, clients, rooms)
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processAction (clID, serverInfo, clients, rooms) (AnswerThisRoom msg) = do
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	mapM_ (\id -> writeChan (sendChan $ clients ! id) msg) roomClients
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	return (clID, serverInfo, clients, rooms)
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	where
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		roomClients = IntSet.elems $ playersIDs room
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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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processAction (clID, serverInfo, clients, rooms) (AnswerOthersInRoom msg) = do
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	mapM_ (\id -> writeChan (sendChan $ clients ! id) msg) $ Prelude.filter (/= clID) roomClients
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	return (clID, serverInfo, clients, rooms)
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	where
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		roomClients = IntSet.elems $ playersIDs room
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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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processAction (clID, serverInfo, clients, rooms) (AnswerLobby msg) = do
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	mapM_ (\id -> writeChan (sendChan $ clients ! id) msg) roomClients
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	return (clID, serverInfo, clients, rooms)
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	where
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		roomClients = IntSet.elems $ playersIDs room
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		room = rooms ! 0
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processAction (clID, serverInfo, clients, rooms) SendServerMessage = do
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	writeChan (sendChan $ clients ! clID) $ ["SERVER_MESSAGE", message serverInfo]
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	return (clID, serverInfo, clients, rooms)
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	where
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		client = clients ! clID
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		message = if clientProto client < 27 then
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			serverMessageForOldVersions
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			else
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			serverMessage
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processAction (clID, serverInfo, clients, rooms) (ProtocolError msg) = do
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	writeChan (sendChan $ clients ! clID) ["ERROR", msg]
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	return (clID, serverInfo, clients, rooms)
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processAction (clID, serverInfo, clients, rooms) (Warning msg) = do
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	writeChan (sendChan $ clients ! clID) ["WARNING", msg]
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	return (clID, serverInfo, clients, rooms)
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processAction (clID, serverInfo, clients, rooms) (ByeClient msg) = do
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	infoM "Clients" ((show $ clientUID client) ++ " quits: " ++ msg)
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	(_, _, newClients, newRooms) <-
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			if roomID client /= 0 then
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				processAction  (clID, serverInfo, clients, rooms)
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					(if isMaster client then RemoveRoom else RemoveClientTeams clID)
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				else
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					return (clID, serverInfo, clients, rooms)
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	mapM_ (processAction (clID, serverInfo, newClients, newRooms)) $ answerOthersQuit ++ answerInformRoom
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	writeChan (sendChan $ clients ! clID) ["BYE", msg]
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	return (
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			0,
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			serverInfo,
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			delete clID newClients,
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			adjust (\r -> r{
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					playersIDs = IntSet.delete clID (playersIDs r),
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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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					}) (roomID $ newClients ! clID) newRooms
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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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processAction (clID, serverInfo, clients, rooms) (ModifyClient func) = do
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	return (clID, serverInfo, adjust func clID clients, rooms)
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processAction (clID, serverInfo, clients, rooms) (ModifyRoom func) = do
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	return (clID, serverInfo, clients, adjust func rID rooms)
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	where
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		rID = roomID $ clients ! clID
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processAction (clID, serverInfo, clients, rooms) (ModifyServerInfo func) = do
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	return (clID, func serverInfo, clients, rooms)
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processAction (clID, serverInfo, clients, rooms) (RoomAddThisClient rID) = do
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	processAction (
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		clID,
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		serverInfo,
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		adjust (\cl -> cl{roomID = rID, teamsInGame = if rID == 0 then teamsInGame cl else 0}) clID clients,
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		adjust (\r -> r{playersIDs = IntSet.insert clID (playersIDs r), playersIn = (playersIn r) + 1}) rID $
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			adjust (\r -> r{playersIDs = IntSet.delete clID (playersIDs r)}) 0 rooms
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		) joinMsg
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	where
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		client = clients ! clID
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		joinMsg = if rID == 0 then
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				AnswerAllOthers ["LOBBY:JOINED", nick client]
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			else
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				AnswerThisRoom ["JOINED", nick client]
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processAction (clID, serverInfo, clients, rooms) (RoomRemoveThisClient msg) = do
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	(_, _, newClients, newRooms) <-
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			if roomID client /= 0 then
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				foldM
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					processAction
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						(clID, serverInfo, clients, rooms)
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						[AnswerOthersInRoom ["LEFT", nick client, msg],
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						RemoveClientTeams clID]
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				else
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					return (clID, serverInfo, clients, rooms)
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	return (
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		clID,
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		serverInfo,
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		adjust (\cl -> cl{roomID = 0, isMaster = False, isReady = False, teamsInGame = undefined}) clID newClients,
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		adjust (\r -> r{
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				playersIDs = IntSet.delete clID (playersIDs r),
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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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				}) rID $
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			adjust (\r -> r{playersIDs = IntSet.insert clID (playersIDs r)}) 0 newRooms
1804
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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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processAction (clID, serverInfo, clients, rooms) (AddRoom roomName roomPassword) = do
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	let newServerInfo = serverInfo {nextRoomID = newID}
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	let room = newRoom{
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			roomUID = newID,
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			name = roomName,
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			password = roomPassword,
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			roomProto = (clientProto client)
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			}
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   228
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	processAction (clID, serverInfo, clients, rooms) $ AnswerLobby ["ROOM", "ADD", roomName]
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   230
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	processAction (
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		clID,
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		newServerInfo,
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   234
		adjust (\cl -> cl{isMaster = True}) clID clients,
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   235
		insert newID room rooms
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		) $ RoomAddThisClient newID
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	where
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		newID = (nextRoomID serverInfo) - 1
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		client = clients ! clID
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   240
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   241
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processAction (clID, serverInfo, clients, rooms) (RemoveRoom) = do
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	processAction (clID, serverInfo, clients, rooms) $ AnswerLobby ["ROOM", "DEL", name room]
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	processAction (clID, serverInfo, clients, rooms) $ 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
1804
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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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   254
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   255
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   256
processAction (clID, serverInfo, clients, rooms) (UnreadyRoomClients) = do
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	processAction (clID, serverInfo, clients, rooms) $ AnswerThisRoom ("NOT_READY" : roomPlayers)
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   258
	return (clID,
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   259
		serverInfo,
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		Data.IntMap.map (\cl -> if roomID cl == rID then cl{isReady = False} else cl) clients,
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3bb5e22b7f9a Fix ready players number after a round
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   261
		adjust (\r -> r{readyPlayers = 0}) rID rooms)
1811
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   262
	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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		roomPlayers = Prelude.map (nick . (clients !)) roomPlayersIDs
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   267
		roomPlayersIDs = IntSet.elems $ playersIDs room
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   268
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   269
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   270
processAction (clID, serverInfo, clients, rooms) (RemoveTeam teamName) = do
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   271
	newRooms <-	if not $ gameinprogress room then
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   272
			do
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			processAction (clID, serverInfo, clients, rooms) $ AnswerOthersInRoom ["REMOVE_TEAM", teamName]
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   274
			return $
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   275
				adjust (\r -> r{teams = Prelude.filter (\t -> teamName /= teamname t) $ teams r}) rID rooms
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		else
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			do
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			processAction (clID, serverInfo, clients, rooms) $ AnswerOthersInRoom ["EM", rmTeamMsg]
1813
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   279
			return $
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   280
				adjust (\r -> r{
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   281
				teams = Prelude.filter (\t -> teamName /= teamname t) $ teams r,
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   282
				leftTeams = teamName : leftTeams r,
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   283
				roundMsgs = roundMsgs r Seq.|> rmTeamMsg
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   284
				}) rID rooms
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   285
	return (clID, serverInfo, clients, newRooms)
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   286
	where
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   287
		room = rooms ! rID
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   288
		rID = roomID client
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   289
		client = clients ! clID
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   290
		rmTeamMsg = toEngineMsg $ 'F' : teamName
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   291
cfe1481e0247 Removeteam action
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diff changeset
   292
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71cb978dc85f Add working check for www account existance
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   293
processAction (clID, serverInfo, clients, rooms) (CheckRegistered) = do
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   294
	writeChan (dbQueries serverInfo) $ CheckAccount (clientUID client) (nick client) (host client)
1834
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   295
	return (clID, serverInfo, clients, rooms)
71cb978dc85f Add working check for www account existance
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   296
	where
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   297
		client = clients ! clID
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diff changeset
   298
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   299
2155
d897222d3339 Implement ability for server admin to clear accounts cache
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   300
processAction (clID, serverInfo, clients, rooms) (ClearAccountsCache) = do
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   301
	writeChan (dbQueries serverInfo) $ ClearCache
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   302
	return (clID, serverInfo, clients, rooms)
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   303
	where
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   304
		client = clients ! clID
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   305
d897222d3339 Implement ability for server admin to clear accounts cache
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diff changeset
   306
1804
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   307
processAction (clID, serverInfo, clients, rooms) (Dump) = do
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   308
	writeChan (sendChan $ clients ! clID) ["DUMP", show serverInfo, showTree clients, showTree rooms]
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   309
	return (clID, serverInfo, clients, rooms)
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   310
1841
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   311
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5dd4cb7fd7e5 Server now send ASKPASSWORD command to frontend when user has web account
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   312
processAction (clID, serverInfo, clients, rooms) (ProcessAccountInfo info) = do
5dd4cb7fd7e5 Server now send ASKPASSWORD command to frontend when user has web account
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   313
	case info of
1847
2178c0fc838c Set admin flag and send admin notification to users with rid equal to 3
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   314
		HasAccount passwd isAdmin -> do
1839
5dd4cb7fd7e5 Server now send ASKPASSWORD command to frontend when user has web account
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   315
			infoM "Clients" $ show clID ++ " has account"
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   316
			writeChan (sendChan $ clients ! clID) ["ASKPASSWORD"]
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2178c0fc838c Set admin flag and send admin notification to users with rid equal to 3
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   317
			return (clID, serverInfo, adjust (\cl -> cl{webPassword = passwd, isAdministrator = isAdmin}) clID clients, rooms)
1839
5dd4cb7fd7e5 Server now send ASKPASSWORD command to frontend when user has web account
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   318
		Guest -> do
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   319
			infoM "Clients" $ show clID ++ " is guest"
1841
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   320
			processAction (clID, serverInfo, adjust (\cl -> cl{logonPassed = True}) clID clients, rooms) MoveToLobby
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   321
		Admin -> do
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   322
			infoM "Clients" $ show clID ++ " is admin"
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diff changeset
   323
			foldM processAction (clID, serverInfo, adjust (\cl -> cl{logonPassed = True, isAdministrator = True}) clID clients, rooms) [MoveToLobby, AnswerThisClient ["ADMIN_ACCESS"]]
1841
fba7210b438b Retrieve client password from web database and ask for it
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diff changeset
   324
fba7210b438b Retrieve client password from web database and ask for it
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diff changeset
   325
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diff changeset
   326
processAction (clID, serverInfo, clients, rooms) (MoveToLobby) = do
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diff changeset
   327
	foldM processAction (clID, serverInfo, clients, rooms) $
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   328
		(RoomAddThisClient 0)
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   329
		: answerLobbyNicks
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0ebcc98ebc1a Send server message after nicks info (more chance for it to be seen)
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   330
		++ [SendServerMessage]
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diff changeset
   331
1841
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diff changeset
   332
		-- ++ (answerServerMessage client clients)
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   333
	where
1846
24d0074d4eed Small optimization in net server
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diff changeset
   334
		lobbyNicks = Prelude.map nick $ Prelude.filter logonPassed $ elems clients
1841
fba7210b438b Retrieve client password from web database and ask for it
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   335
		answerLobbyNicks = if not $ Prelude.null lobbyNicks then
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diff changeset
   336
					[AnswerThisClient (["LOBBY:JOINED"] ++ lobbyNicks)]
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   337
				else
fba7210b438b Retrieve client password from web database and ask for it
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   338
					[]
fba7210b438b Retrieve client password from web database and ask for it
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   339
fba7210b438b Retrieve client password from web database and ask for it
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diff changeset
   340
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7f303aa066da Implement kick from server by administrator
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diff changeset
   341
processAction (clID, serverInfo, clients, rooms) (KickClient kickID) = do
1879
bb114339eb4e Implement kick from room
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diff changeset
   342
	liftM2 replaceID (return clID) (processAction (kickID, serverInfo, clients, rooms) $ ByeClient "Kicked")
bb114339eb4e Implement kick from room
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diff changeset
   343
1926
cb46fbdcaa41 Add simple DoS protection mechanism (although better than previous server had)
unc0rr
parents: 1925
diff changeset
   344
1921
2a09f7f786a0 - User from localhost is server admin
unc0rr
parents: 1879
diff changeset
   345
processAction (clID, serverInfo, clients, rooms) (BanClient banNick) = do
2a09f7f786a0 - User from localhost is server admin
unc0rr
parents: 1879
diff changeset
   346
	return (clID, serverInfo, clients, rooms)
2a09f7f786a0 - User from localhost is server admin
unc0rr
parents: 1879
diff changeset
   347
1879
bb114339eb4e Implement kick from room
unc0rr
parents: 1866
diff changeset
   348
bb114339eb4e Implement kick from room
unc0rr
parents: 1866
diff changeset
   349
processAction (clID, serverInfo, clients, rooms) (KickRoomClient kickID) = do
bb114339eb4e Implement kick from room
unc0rr
parents: 1866
diff changeset
   350
	writeChan (sendChan $ clients ! kickID) ["KICKED"]
2126
cb249fa8e3da - Prevent server from producing zombies
unc0rr
parents: 2118
diff changeset
   351
	liftM2 replaceID (return clID) (processAction (kickID, serverInfo, clients, rooms) $ RoomRemoveThisClient "kicked")
1879
bb114339eb4e Implement kick from room
unc0rr
parents: 1866
diff changeset
   352
bb114339eb4e Implement kick from room
unc0rr
parents: 1866
diff changeset
   353
bb114339eb4e Implement kick from room
unc0rr
parents: 1866
diff changeset
   354
processAction (clID, serverInfo, clients, rooms) (RemoveClientTeams teamsClID) = do
bb114339eb4e Implement kick from room
unc0rr
parents: 1866
diff changeset
   355
	liftM2 replaceID (return clID) $
bb114339eb4e Implement kick from room
unc0rr
parents: 1866
diff changeset
   356
		foldM processAction (teamsClID, serverInfo, clients, rooms) $ removeTeamsActions
bb114339eb4e Implement kick from room
unc0rr
parents: 1866
diff changeset
   357
	where
bb114339eb4e Implement kick from room
unc0rr
parents: 1866
diff changeset
   358
		client = clients ! teamsClID
bb114339eb4e Implement kick from room
unc0rr
parents: 1866
diff changeset
   359
		room = rooms ! (roomID client)
bb114339eb4e Implement kick from room
unc0rr
parents: 1866
diff changeset
   360
		teamsToRemove = Prelude.filter (\t -> teamowner t == nick client) $ teams room
bb114339eb4e Implement kick from room
unc0rr
parents: 1866
diff changeset
   361
		removeTeamsActions = Prelude.map (RemoveTeam . teamname) teamsToRemove
1926
cb46fbdcaa41 Add simple DoS protection mechanism (although better than previous server had)
unc0rr
parents: 1925
diff changeset
   362
cb46fbdcaa41 Add simple DoS protection mechanism (although better than previous server had)
unc0rr
parents: 1925
diff changeset
   363
cb46fbdcaa41 Add simple DoS protection mechanism (although better than previous server had)
unc0rr
parents: 1925
diff changeset
   364
processAction (clID, serverInfo, clients, rooms) (AddClient client) = do
cb46fbdcaa41 Add simple DoS protection mechanism (although better than previous server had)
unc0rr
parents: 1925
diff changeset
   365
	let updatedClients = insert (clientUID client) client clients
1927
e2031906a347 Ping clients every 30 seconds. Disconnection due to ping timeout to be implemented.
unc0rr
parents: 1926
diff changeset
   366
	infoM "Clients" ((show $ clientUID client) ++ ": New client. Time: " ++ (show $ connectTime client))
1926
cb46fbdcaa41 Add simple DoS protection mechanism (although better than previous server had)
unc0rr
parents: 1925
diff changeset
   367
	writeChan (sendChan $ client) ["CONNECTED", "Hedgewars server http://www.hedgewars.org/"]
cb46fbdcaa41 Add simple DoS protection mechanism (although better than previous server had)
unc0rr
parents: 1925
diff changeset
   368
1977
2284d7fefe4f Some polishing
unc0rr
parents: 1972
diff changeset
   369
	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
   370
1931
ffe420e9e61a Ooops.. enable back DoS protection
unc0rr
parents: 1930
diff changeset
   371
	if isJust $ host client `Prelude.lookup` newLogins then
ffe420e9e61a Ooops.. enable back DoS protection
unc0rr
parents: 1930
diff changeset
   372
		processAction (clID, serverInfo{lastLogins = newLogins}, updatedClients, rooms) $ ByeClient "Reconnected too fast"
ffe420e9e61a Ooops.. enable back DoS protection
unc0rr
parents: 1930
diff changeset
   373
		else
ffe420e9e61a Ooops.. enable back DoS protection
unc0rr
parents: 1930
diff changeset
   374
		return (clID, serverInfo{lastLogins = (host client, connectTime client) : newLogins}, updatedClients, rooms)
1927
e2031906a347 Ping clients every 30 seconds. Disconnection due to ping timeout to be implemented.
unc0rr
parents: 1926
diff changeset
   375
e2031906a347 Ping clients every 30 seconds. Disconnection due to ping timeout to be implemented.
unc0rr
parents: 1926
diff changeset
   376
e2031906a347 Ping clients every 30 seconds. Disconnection due to ping timeout to be implemented.
unc0rr
parents: 1926
diff changeset
   377
processAction (clID, serverInfo, clients, rooms) PingAll = do
1928
9bf8f4f30d6b - Implement ping timeout
unc0rr
parents: 1927
diff changeset
   378
	(_, _, newClients, newRooms) <- foldM kickTimeouted (clID, serverInfo, clients, rooms) $ elems clients
1927
e2031906a347 Ping clients every 30 seconds. Disconnection due to ping timeout to be implemented.
unc0rr
parents: 1926
diff changeset
   379
	processAction (clID,
e2031906a347 Ping clients every 30 seconds. Disconnection due to ping timeout to be implemented.
unc0rr
parents: 1926
diff changeset
   380
		serverInfo,
1928
9bf8f4f30d6b - Implement ping timeout
unc0rr
parents: 1927
diff changeset
   381
		Data.IntMap.map (\cl -> cl{pingsQueue = pingsQueue cl + 1}) newClients,
9bf8f4f30d6b - Implement ping timeout
unc0rr
parents: 1927
diff changeset
   382
		newRooms) $ AnswerAll ["PING"]
9bf8f4f30d6b - Implement ping timeout
unc0rr
parents: 1927
diff changeset
   383
	where
9bf8f4f30d6b - Implement ping timeout
unc0rr
parents: 1927
diff changeset
   384
		kickTimeouted (clID, serverInfo, clients, rooms) client =
9bf8f4f30d6b - Implement ping timeout
unc0rr
parents: 1927
diff changeset
   385
			if pingsQueue client > 0 then
9bf8f4f30d6b - Implement ping timeout
unc0rr
parents: 1927
diff changeset
   386
				processAction (clientUID client, serverInfo, clients, rooms) $ ByeClient "Ping timeout"
9bf8f4f30d6b - Implement ping timeout
unc0rr
parents: 1927
diff changeset
   387
				else
9bf8f4f30d6b - Implement ping timeout
unc0rr
parents: 1927
diff changeset
   388
				return (clID, serverInfo, clients, rooms)
2172
80d34c0b9dfe Implement sending gameserver stats to webserver
unc0rr
parents: 2155
diff changeset
   389
80d34c0b9dfe Implement sending gameserver stats to webserver
unc0rr
parents: 2155
diff changeset
   390
80d34c0b9dfe Implement sending gameserver stats to webserver
unc0rr
parents: 2155
diff changeset
   391
processAction (clID, serverInfo, clients, rooms) (StatsAction) = do
80d34c0b9dfe Implement sending gameserver stats to webserver
unc0rr
parents: 2155
diff changeset
   392
	writeChan (dbQueries serverInfo) $ SendStats (size clients) (size rooms - 1)
80d34c0b9dfe Implement sending gameserver stats to webserver
unc0rr
parents: 2155
diff changeset
   393
	return (clID, serverInfo, clients, rooms)