gameServer/HWProtoNEState.hs
author unc0rr
Sat, 05 Mar 2011 22:23:14 +0300
changeset 4987 cf9470964dba
parent 4975 31da8979e5b1
child 4989 4771fed9272e
permissions -rw-r--r--
Use 'undefined' less (replace with default values and 'error')
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{-# LANGUAGE OverloadedStrings #-}
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module HWProtoNEState where
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import Data.Maybe
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import Data.List
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import Control.Monad.Reader
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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 Actions
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import Utils
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import RoomsAndClients
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handleCmd_NotEntered :: CmdHandler c
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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 "Nickname already chosen"]
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        else
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        if haveSameNick irnc then if clientProto cl < 38 then return [ByeClient "Nickname is already in use"] else return [NoticeMessage NickAlreadyInUse]
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            else
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            if illegalName newNick then return [ByeClient "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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    where
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    haveSameNick irnc = isJust . find (== newNick) . map (nick . client irnc) $ allClients irnc
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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 "Protocol already known"]
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        else
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        if parsedProto == 0 then return [ProtocolError "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", B.pack $ show parsedProto] :
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                [CheckRegistered | not . B.null $ nick cl]
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    where
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        parsedProto = case B.readInt protoNum of
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                           Just (i, t) | B.null t -> fromIntegral i
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                           _ -> 0
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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 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 _ = return [ProtocolError "Incorrect command (state: not entered)"]