78 lines
1.8 KiB
Haskell
78 lines
1.8 KiB
Haskell
module Propellor.Types.Dns where
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import Propellor.Types.OS (HostName)
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import Foreign.C.Types
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type Domain = String
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data IPAddr = IPv4 String | IPv6 String
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deriving (Read, Show, Eq, Ord)
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fromIPAddr :: IPAddr -> String
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fromIPAddr (IPv4 addr) = addr
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fromIPAddr (IPv6 addr) = addr
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-- | Represents a bind 9 named.conf file.
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data NamedConf = NamedConf
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{ confDomain :: Domain
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, confType :: Type
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, confFile :: FilePath
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, confMasters :: [IPAddr]
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, confLines :: [String]
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}
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deriving (Show, Eq)
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data Type = Master | Secondary
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deriving (Show, Eq)
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-- | Represents a bind 9 zone file.
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data Zone = Zone
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{ zSOA :: SOA
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, zHosts :: [(HostName, Record)]
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}
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deriving (Read, Show, Eq)
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-- | Every domain has a SOA record, which is big and complicated.
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data SOA = SOA
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{ sDomain :: BindDomain
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-- ^ Typically ns1.your.domain
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, sSerial :: SerialNumber
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-- ^ The most important parameter is the serial number,
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-- which must increase after each change.
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, sRefresh :: Integer
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, sRetry :: Integer
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, sExpire :: Integer
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, sTTL :: Integer
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, sRecord :: [Record]
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-- ^ Records for the root of the domain. Typically NS, A, TXT
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}
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deriving (Read, Show, Eq)
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-- | Types of DNS records.
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--
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-- This is not a complete list, more can be added.
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data Record
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= Address IPAddr
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| CNAME BindDomain
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| MX Int BindDomain
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| NS BindDomain
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| TXT String
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deriving (Read, Show, Eq, Ord)
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getIPAddr :: Record -> Maybe IPAddr
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getIPAddr (Address addr) = Just addr
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getIPAddr _ = Nothing
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-- | Bind serial numbers are unsigned, 32 bit integers.
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type SerialNumber = CInt
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-- | Domains in the zone file must end with a period if they are absolute.
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--
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-- Let's use a type to keep absolute domains straight from relative
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-- domains.
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--
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-- The SOADomain refers to the root SOA record.
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data BindDomain = RelDomain Domain | AbsDomain Domain | SOADomain
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deriving (Read, Show, Eq, Ord)
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