module Propellor.Types.Dns where
import Propellor.Types.OS (HostName)
import Data.Word
import Data.Monoid
import qualified Data.Map as M
type Domain = String
data IPAddr = IPv4 String | IPv6 String
deriving (Read, Show, Eq, Ord)
fromIPAddr :: IPAddr -> String
fromIPAddr (IPv4 addr) = addr
fromIPAddr (IPv6 addr) = addr
data NamedConf = NamedConf
{ confDomain :: Domain
, confDnsServerType :: DnsServerType
, confFile :: FilePath
, confMasters :: [IPAddr]
, confAllowTransfer :: [IPAddr]
, confLines :: [String]
}
deriving (Show, Eq, Ord)
data DnsServerType = Master | Secondary
deriving (Show, Eq, Ord)
data Zone = Zone
{ zDomain :: Domain
, zSOA :: SOA
, zHosts :: [(BindDomain, Record)]
}
deriving (Read, Show, Eq)
data SOA = SOA
{ sDomain :: BindDomain
, sSerial :: SerialNumber
, sRefresh :: Integer
, sRetry :: Integer
, sExpire :: Integer
, sNegativeCacheTTL :: Integer
}
deriving (Read, Show, Eq)
data Record
= Address IPAddr
| CNAME BindDomain
| MX Int BindDomain
| NS BindDomain
| TXT String
| SRV Word16 Word16 Word16 BindDomain
deriving (Read, Show, Eq, Ord)
getIPAddr :: Record -> Maybe IPAddr
getIPAddr (Address addr) = Just addr
getIPAddr _ = Nothing
getCNAME :: Record -> Maybe BindDomain
getCNAME (CNAME d) = Just d
getCNAME _ = Nothing
getNS :: Record -> Maybe BindDomain
getNS (NS d) = Just d
getNS _ = Nothing
type SerialNumber = Word32
data BindDomain = RelDomain Domain | AbsDomain Domain | RootDomain
deriving (Read, Show, Eq, Ord)
domainHostName :: BindDomain -> Maybe HostName
domainHostName (RelDomain d) = Just d
domainHostName (AbsDomain d) = Just d
domainHostName RootDomain = Nothing
newtype NamedConfMap = NamedConfMap (M.Map Domain NamedConf)
deriving (Eq, Ord, Show)
instance Monoid NamedConfMap where
mempty = NamedConfMap M.empty
mappend (NamedConfMap old) (NamedConfMap new) = NamedConfMap $
M.unionWith combiner new old
where
combiner n o = case (confDnsServerType n, confDnsServerType o) of
(Secondary, Master) -> o
_ -> n
fromNamedConfMap :: NamedConfMap -> M.Map Domain NamedConf
fromNamedConfMap (NamedConfMap m) = m