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|
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
module SocketLike
( SocketLike
, getSocketName
, getPeerName
, getPeerCred
, socketPort
, sIsConnected
, sIsBound
, sIsListening
, sIsReadable
, sIsWritable
, RestrictedSocket
, restrictSocket
, PortNumber
, SockAddr(..)
, CUInt
) where
import Network.Socket
( PortNumber
, SockAddr
)
import Foreign.C.Types ( CUInt )
import qualified Network.Socket as NS
class SocketLike sock where
getSocketName :: sock -> IO SockAddr
getPeerName :: sock -> IO SockAddr
getPeerCred :: sock -> IO (CUInt, CUInt, CUInt)
socketPort :: sock -> IO PortNumber
sIsConnected :: sock -> IO Bool
sIsBound :: sock -> IO Bool
sIsListening :: sock -> IO Bool
sIsReadable :: sock -> IO Bool
sIsWritable :: sock -> IO Bool
instance SocketLike NS.Socket where
getSocketName = NS.getSocketName
getPeerName = NS.getPeerName
getPeerCred = NS.getPeerCred
socketPort = NS.socketPort
sIsConnected = NS.sIsConnected -- warning: this is always False if the socket
-- was converted to a Handle
sIsBound = NS.sIsBound
sIsListening = NS.sIsListening
sIsReadable = NS.sIsReadable
sIsWritable = NS.sIsWritable
newtype RestrictedSocket = Restricted NS.Socket deriving SocketLike
restrictSocket :: NS.Socket -> RestrictedSocket
restrictSocket socket = Restricted socket
|
