gameServer/HWProtoNEState.hs
author palewolf
Tue, 30 Mar 2010 20:18:54 +0000
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module HWProtoNEState where
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import qualified Data.IntMap as IntMap
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import Maybe
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import Data.List
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import Data.Word
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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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handleCmd_NotEntered :: CmdHandler
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handleCmd_NotEntered clID clients _ ["NICK", newNick]
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    | not . null $ nick client = [ProtocolError "Nickname already chosen"]
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    | haveSameNick = [AnswerThisClient ["WARNING", "Nickname already in use"], ByeClient ""]
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    | illegalName newNick = [ByeClient "Illegal nickname"]
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    | otherwise =
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        ModifyClient (\c -> c{nick = newNick}) :
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        AnswerThisClient ["NICK", newNick] :
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        [CheckRegistered | clientProto client /= 0]
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    where
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        client = clients IntMap.! clID
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        haveSameNick = isJust $ find (\cl -> newNick == nick cl) $ IntMap.elems clients
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handleCmd_NotEntered clID clients _ ["PROTO", protoNum]
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    | clientProto client > 0 = [ProtocolError "Protocol already known"]
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    | parsedProto == 0 = [ProtocolError "Bad number"]
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    | otherwise =
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        ModifyClient (\c -> c{clientProto = parsedProto}) :
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        AnswerThisClient ["PROTO", show parsedProto] :
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        [CheckRegistered | (not . null) (nick client)]
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    where
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        client = clients IntMap.! clID
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        parsedProto = fromMaybe 0 (maybeRead protoNum :: Maybe Word16)
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handleCmd_NotEntered clID clients _ ["PASSWORD", passwd] =
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    if passwd == webPassword client then
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        [ModifyClient (\cl -> cl{logonPassed = True}),
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        MoveToLobby] ++ adminNotice
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    else
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        [ByeClient "Authentication failed"]
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    where
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        client = clients IntMap.! clID
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        adminNotice = [AnswerThisClient ["ADMIN_ACCESS"] | isAdministrator client]
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handleCmd_NotEntered clID clients _ ["DUMP"] =
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    if isAdministrator (clients IntMap.! clID) then [Dump] else []
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handleCmd_NotEntered clID _ _ _ = [ProtocolError "Incorrect command (state: not entered)"]