gameServer/HWProtoNEState.hs
author sheepluva
Wed, 27 Apr 2016 16:20:59 +0200
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child 13079 81c154fd4380
permissions -rw-r--r--
Added "Forts" to map type selection. This makes the mode easier selectable/discoverable. Also the slider can be used to adjust the distance between forts.
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{-
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 * Hedgewars, a free turn based strategy game
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 * Copyright (c) 2004-2015 Andrey Korotaev <unC0Rr@gmail.com>
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; version 2 of the License
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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 \-}
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{-# LANGUAGE OverloadedStrings, CPP #-}
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module HWProtoNEState where
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import Control.Monad.Reader
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import qualified Data.ByteString.Lazy as BL
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import qualified Data.ByteString.Char8 as B
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import Data.Digest.Pure.SHA
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--------------------------------------
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import CoreTypes
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import Utils
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import RoomsAndClients
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import HandlerUtils
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handleCmd_NotEntered :: CmdHandler
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handleCmd_NotEntered ["NICK", newNick] = do
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    (ci, irnc) <- ask
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    let cl = irnc `client` ci
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    if not . B.null $ nick cl then return [ProtocolError $ loc "Nickname already chosen"]
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        else
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        if illegalName newNick then return [ByeClient $ loc "Illegal nickname"]
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            else
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            return $
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                ModifyClient (\c -> c{nick = newNick}) :
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                AnswerClients [sendChan cl] ["NICK", newNick] :
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                [CheckRegistered | clientProto cl /= 0]
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handleCmd_NotEntered ["PROTO", protoNum] = do
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    (ci, irnc) <- ask
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    let cl = irnc `client` ci
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    if clientProto cl > 0 then return [ProtocolError $ loc "Protocol already known"]
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        else
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        if parsedProto == 0 then return [ProtocolError $ loc "Bad number"]
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            else
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            return $
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                ModifyClient (\c -> c{clientProto = parsedProto}) :
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                AnswerClients [sendChan cl] ["PROTO", showB parsedProto] :
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                [CheckRegistered | not . B.null $ nick cl]
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    where
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        parsedProto = readInt_ protoNum
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handleCmd_NotEntered ["PASSWORD", passwd] = do
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    (ci, irnc) <- ask
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    let cl = irnc `client` ci
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    if clientProto cl < 48 && passwd == webPassword cl then
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        return $ JoinLobby : [AnswerClients [sendChan cl] ["ADMIN_ACCESS"] | isAdministrator cl]
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        else
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        return [ByeClient "Authentication failed"]
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handleCmd_NotEntered ["PASSWORD", passwd, clientSalt] = do
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    (ci, irnc) <- ask
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    let cl = irnc `client` ci
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    let clientHash = h [clientSalt, serverSalt cl, webPassword cl, showB $ clientProto cl, "!hedgewars"]
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    let serverHash = h [serverSalt cl, clientSalt, webPassword cl, showB $ clientProto cl, "!hedgewars"]
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    if passwd == clientHash then
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        return [
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            AnswerClients [sendChan cl] ["SERVER_AUTH", serverHash] 
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            , JoinLobby
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            ]
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        else
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        return [ByeClient "Authentication failed"]
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    where
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        h = B.pack . showDigest . sha1 . BL.fromChunks
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#if defined(OFFICIAL_SERVER)
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handleCmd_NotEntered ["CHECKER", protoNum, newNick, password] = do
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    (ci, irnc) <- ask
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    let cl = irnc `client` ci
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    if parsedProto == 0 then return [ProtocolError $ loc "Bad number"]
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        else
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        return $ [
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            ModifyClient (\c -> c{clientProto = parsedProto, nick = newNick, webPassword = password, isChecker = True})
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            , CheckRegistered]
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    where
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        parsedProto = readInt_ protoNum
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#endif
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handleCmd_NotEntered _ = return [ProtocolError "Incorrect command (state: not entered)"]