author  nemo 
Sat, 21 May 2016 15:23:08 0400  
changeset 11831  dd18d8100afd 
parent 11046  47a8c19ecb60 
child 13079  81c154fd4380 
permissions  rwrr 
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{ 
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* Hedgewars, a free turn based strategy game 
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* Copyright (c) 20042015 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 021101301 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 
10076  23 
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 
1804  26 
 
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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 
1804  33 

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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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3536  60 

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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 
1879  64 

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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"] 
1879  69 

1804  70 

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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)"] 