author | Wuzzy <Wuzzy2@mail.ru> |
Wed, 14 Mar 2018 19:40:43 +0100 | |
changeset 13208 | eaa494f0b19e |
parent 11471 | 4b5c7a5c49fd |
child 14846 | 111c4d750c6d |
permissions | -rw-r--r-- |
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Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
parents:
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{- |
d08611b52000
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Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
parents:
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* Hedgewars, a free turn based strategy game |
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* Copyright (c) 2004-2015 Andrey Korotaev <unC0Rr@gmail.com> |
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Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
parents:
10095
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* |
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Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
parents:
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* This program is free software; you can redistribute it and/or modify |
d08611b52000
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Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
parents:
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* it under the terms of the GNU General Public License as published by |
d08611b52000
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Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
parents:
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changeset
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* the Free Software Foundation; version 2 of the License |
d08611b52000
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Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
parents:
10095
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* |
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Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
parents:
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changeset
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* This program is distributed in the hope that it will be useful, |
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Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
parents:
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
d08611b52000
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Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
parents:
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
d08611b52000
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Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
parents:
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* GNU General Public License for more details. |
d08611b52000
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Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
parents:
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* |
d08611b52000
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Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
parents:
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* You should have received a copy of the GNU General Public License |
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Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
parents:
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* along with this program; if not, write to the Free Software |
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Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
parents:
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
parents:
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changeset
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\-} |
d08611b52000
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Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
parents:
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{-# LANGUAGE OverloadedStrings, BangPatterns #-} |
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module FloodDetection where |
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import Control.Monad.State.Strict |
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import Data.Time |
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import Control.Arrow |
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---------------- |
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import ServerState |
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import CoreTypes |
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import Utils |
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registerEvent :: Event -> StateT ServerState IO [Action] |
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registerEvent e = do |
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eventInfo <- client's $ einfo e |
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if (null eventInfo) || 0 == (fst $ head eventInfo) then doCheck eventInfo else updateInfo |
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where |
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einfo LobbyChatMessage = eiLobbyChat |
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einfo EngineMessage = eiEM |
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einfo RoomJoin = eiJoin |
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transformField LobbyChatMessage f = \c -> c{eiLobbyChat = f $ eiLobbyChat c} |
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transformField EngineMessage f = \c -> c{eiEM = f $ eiEM c} |
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transformField RoomJoin f = \c -> c{eiJoin = f $ eiJoin c} |
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boundaries :: Event -> (Int, (NominalDiffTime, Int), (NominalDiffTime, Int), ([Action], [Action])) |
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boundaries LobbyChatMessage = (3, (10, 2), (30, 3), (chat1, chat2)) |
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boundaries EngineMessage = (8, (10, 4), (25, 5), (em1, em2)) |
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boundaries RoomJoin = (2, (10, 2), (35, 3), (join1, join2)) |
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chat1 = [Warning $ loc "Warning! Chat flood protection activated"] |
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chat2 = [ByeClient $ loc "Excess flood"] |
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em1 = [Warning $ loc "Game messages flood detected - 1"] |
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em2 = [ByeClient $ loc "Excess flood"] |
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join1 = [Warning $ loc "Warning! Joins flood protection activated"] |
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join2 = [ByeClient $ loc "Excess flood"] |
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doCheck ei = do |
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curTime <- io getCurrentTime |
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let (numPerEntry, (sec1, num1), (sec2, num2), (ac1, ac2)) = boundaries e |
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let nei = takeWhile ((>=) sec2 . diffUTCTime curTime . snd) ei |
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let l2 = length nei |
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let l1 = length $ takeWhile ((>=) sec1 . diffUTCTime curTime . snd) nei |
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let actions = if l2 >= num2 + 1 || l1 >= num1 + 1 then |
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ac2 |
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else |
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if l1 >= num1 || l2 >= num2 then |
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ac1 |
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else |
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[] |
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return $ [ModifyClient . transformField e . const $ (numPerEntry, curTime) : nei |
4b5c7a5c49fd
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, ModifyClient (\c -> c{pendingActions = actions}) -- append? prepend? just replacing for now |
4b5c7a5c49fd
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] |
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updateInfo = return [ |
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ModifyClient $ transformField e |
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$ \(h:hs) -> first (flip (-) 1) h : hs |
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] |