module Propellor.Property.Network where
import Propellor.Base
import Propellor.Property.File
import Data.Char
type Interface = String
ifUp :: Interface -> Property DebianLike
ifUp iface = tightenTargets $ cmdProperty "ifup" [iface]
`assume` MadeChange
cleanInterfacesFile :: Property DebianLike
cleanInterfacesFile = tightenTargets $ hasContent interfacesFile
[ "# Deployed by propellor, do not edit."
, ""
, "source-directory interfaces.d"
, ""
, "# The loopback network interface"
, "auto lo"
, "iface lo inet loopback"
]
`describe` ("clean " ++ interfacesFile)
dhcp :: Interface -> Property DebianLike
dhcp iface = tightenTargets $ hasContent (interfaceDFile iface)
[ "auto " ++ iface
, "iface " ++ iface ++ " inet dhcp"
]
`describe` ("dhcp " ++ iface)
`requires` interfacesDEnabled
static :: Interface -> Property DebianLike
static iface = tightenTargets $
check (not <$> doesFileExist f) setup
`describe` desc
`requires` interfacesDEnabled
where
f = interfaceDFile iface
desc = "static " ++ iface
setup :: Property DebianLike
setup = property' desc $ \o -> do
ls <- liftIO $ lines <$> readProcess "ip"
["-o", "addr", "show", iface, "scope", "global"]
stanzas <- liftIO $ concat <$> mapM mkstanza ls
ensureProperty o $ hasContent f $ ("auto " ++ iface) : stanzas
mkstanza ipline = case words ipline of
(_:iface':"inet":addr:_) | iface' == iface -> do
gw <- getgateway
return $ catMaybes
[ Just $ "iface " ++ iface ++ " inet static"
, Just $ "\taddress " ++ addr
, ("\tgateway " ++) <$> gw
]
_ -> return []
getgateway = do
rs <- lines <$> readProcess "ip"
["route", "show", "scope", "global", "dev", iface]
return $ case words <$> headMaybe rs of
Just ("default":"via":gw:_) -> Just gw
_ -> Nothing
ipv6to4 :: Property DebianLike
ipv6to4 = tightenTargets $ hasContent (interfaceDFile "sit0")
[ "# Deployed by propellor, do not edit."
, "iface sit0 inet6 static"
, "\taddress 2002:5044:5531::1"
, "\tnetmask 64"
, "\tgateway ::192.88.99.1"
, "auto sit0"
]
`describe` "ipv6to4"
`requires` interfacesDEnabled
`onChange` ifUp "sit0"
interfacesFile :: FilePath
interfacesFile = "/etc/network/interfaces"
interfaceDFile :: Interface -> FilePath
interfaceDFile i = "/etc/network/interfaces.d" </> escapeInterfaceDName i
escapeInterfaceDName :: Interface -> FilePath
escapeInterfaceDName = filter (\c -> isAscii c && (isAlphaNum c || c `elem` "_-"))
interfacesDEnabled :: Property DebianLike
interfacesDEnabled = tightenTargets $
containsLine interfacesFile "source-directory interfaces.d"
`describe` "interfaces.d directory enabled"