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|
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ForeignFunctionInterface #-}
{-# LANGUAGE CPP #-}
{-# LANGUAGE CApiFFI #-}
-----------------------------------------------------------------------------
-- |
-- Module : Plugins.Monitors.Net.FreeBSD
-- Copyright : (c) 2011, 2012, 2013, 2014, 2017, 2020 Jose Antonio Ortega Ruiz
-- (c) 2007-2010 Andrea Rossato
-- License : BSD-style (see LICENSE)
--
-- Maintainer : Jose A. Ortega Ruiz <jao@gnu.org>
-- Stability : unstable
-- Portability : unportable
--
-- A net device monitor for Xmobar
--
-----------------------------------------------------------------------------
module Xmobar.Plugins.Monitors.Net.FreeBSD (
existingDevs
, findNetDev
) where
import Xmobar.Plugins.Monitors.Net.Common (NetDevRawTotal, NetDev(..), NetDevInfo(..))
import Control.Exception (catch, SomeException(..))
import Foreign (Int32, plusPtr)
import Foreign.C.Types (CUIntMax, CUChar)
import Foreign.C.String (peekCString)
import Foreign.Storable (Storable, alignment, sizeOf, peek, poke)
import System.BSD.Sysctl (OID, sysctlPrepareOid, sysctlReadInt, sysctlPeek)
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/if_mib.h>
data IfData = AvailableIfData {
name :: String
, txBytes :: CUIntMax
, rxBytes :: CUIntMax
, isUp :: Bool
} | NotAvailableIfData
deriving (Show, Read, Eq)
instance Storable IfData where
alignment _ = #{alignment struct ifmibdata}
sizeOf _ = #{size struct ifmibdata}
peek ptr = do
cname <- peekCString (ptr `plusPtr` (#offset struct ifmibdata, ifmd_name))
tx <- peek ((ifmd_data_ptr ptr) `plusPtr` (#offset struct if_data, ifi_obytes)) :: IO CUIntMax
rx <- peek ((ifmd_data_ptr ptr) `plusPtr` (#offset struct if_data, ifi_ibytes)) :: IO CUIntMax
state <- peek ((ifmd_data_ptr ptr) `plusPtr` (#offset struct if_data, ifi_link_state)) :: IO CUChar
return $ AvailableIfData {name = cname, txBytes = tx, rxBytes = rx, isUp = up state}
where
up state = state == (#const LINK_STATE_UP)
ifmd_data_ptr p = p `plusPtr` (#offset struct ifmibdata, ifmd_data)
poke _ _ = pure ()
getNetIfCountOID :: IO OID
getNetIfCountOID = sysctlPrepareOid [
#const CTL_NET
, #const PF_LINK
, #const NETLINK_GENERIC
, #const IFMIB_SYSTEM
, #const IFMIB_IFCOUNT]
getNetIfDataOID :: Int32 -> IO OID
getNetIfDataOID i = sysctlPrepareOid [
#const CTL_NET
, #const PF_LINK
, #const NETLINK_GENERIC
, #const IFMIB_IFDATA
, i
, #const IFDATA_GENERAL]
getNetIfCount :: IO Int32
getNetIfCount = do
oid <- getNetIfCountOID
sysctlReadInt oid
getNetIfData :: Int32 -> IO IfData
getNetIfData i = do
oid <- getNetIfDataOID i
res <- catch (sysctlPeek oid) (\(SomeException _) -> return NotAvailableIfData)
return res
getAllNetworkData :: IO [IfData]
getAllNetworkData = do
count <- getNetIfCount
result <- mapM getNetIfData [1..count]
return result
existingDevs :: IO [String]
existingDevs = getAllNetworkData >>= (\xs -> return $ filter (/= "lo0") $ fmap name xs)
convertIfDataToNetDev :: IfData -> IO NetDevRawTotal
convertIfDataToNetDev ifData = do
let up = isUp ifData
rx = fromInteger . toInteger $ rxBytes ifData
tx = fromInteger . toInteger $ txBytes ifData
d = name ifData
return $ N d (if up then ND rx tx else NI)
netConvertIfDataToNetDev :: [IfData] -> IO [NetDevRawTotal]
netConvertIfDataToNetDev = mapM convertIfDataToNetDev
findNetDev :: String -> IO NetDevRawTotal
findNetDev dev = do
nds <- getAllNetworkData >>= netConvertIfDataToNetDev
case filter isDev nds of
x:_ -> return x
_ -> return NA
where isDev (N d _) = d == dev
isDev NA = False
|
