{-# LANGUAGE OverloadedStrings #-}
module NmcDom ( NmcDom(..)
- , NmcRRService(..)
+ , NmcRRSrv(..)
, NmcRRI2p(..)
- , NmcRRTls(..)
+ , NmcRRTlsa(..)
, NmcRRDs(..)
- , emptyNmcDom
- , mergeNmcDom
+ , merge
) where
import Prelude hiding (length)
import Data.Text (Text, unpack)
import Data.List (union)
import Data.List.Split
-import Data.Vector ((!), length, singleton)
+import Data.Vector ((!), length)
+import qualified Data.Vector as V (singleton)
import Data.Map (Map, unionWith)
+import qualified Data.Map as M (singleton, empty)
import qualified Data.HashMap.Strict as H (lookup)
import Data.Aeson
import Data.Aeson.Types
+import Data.Default.Class
-- Variant of Aeson's `.:?` that interprets a String as a
-- single-element list, so it is possible to have either
obj .:/ key = case H.lookup key obj of
Nothing -> pure Nothing
Just v -> case v of
- String s -> parseJSON $ Array (singleton v)
+ String s -> parseJSON $ Array (V.singleton v)
_ -> parseJSON v
+data IntRRService = IntRRService { isvName :: String
+ , isvProto :: String
+ , isvPrio :: Int
+ , isvWeight :: Int
+ , isvPort :: Int
+ , isvHost :: String
+ } deriving (Show, Eq)
+
+instance FromJSON IntRRService where
+ parseJSON (Array a) =
+ if length a == 6 then IntRRService
+ <$> parseJSON (a ! 0)
+ <*> parseJSON (a ! 1)
+ <*> parseJSON (a ! 2)
+ <*> parseJSON (a ! 3)
+ <*> parseJSON (a ! 4)
+ <*> parseJSON (a ! 5)
+ else empty
+ parseJSON _ = empty
+
+makeMx :: Object -> Parser (Maybe [String])
+makeMx o =
+ case H.lookup "service" o of
+ Nothing -> pure Nothing
+ Just (Array a) -> do
+ isvl <- parseJSON (Array a)
+ return $ Just $ map mxStr $ filter mxMatch isvl
+ where
+ mxMatch isv = isvName isv == "smtp"
+ && isvProto isv == "tcp"
+ && isvPort isv == 25
+ mxStr isv = (show (isvPrio isv)) ++ "\t" ++ (isvHost isv)
+ Just _ -> empty
+
+makeSubmap :: Object -> Parser (Maybe (Map String NmcDom))
+makeSubmap o = ((.).(.)) merge merge <$> takeTls o <*> takeSrv o <*> takeMap o
+
+takeMap :: Object -> Parser (Maybe (Map String NmcDom))
+takeMap o = o .:? "map"
+
+takeSrv :: Object -> Parser (Maybe (Map String NmcDom))
+takeSrv o =
+ case H.lookup "service" o of
+ Nothing -> pure Nothing
+ Just (Array a) -> do
+ isvl <- parseJSON (Array a)
+ return $ foldr addSrv (Just M.empty) isvl
+ where
+ addSrv isv acc = subm `merge` acc
+ where
+ subm = Just (M.singleton ("_" ++ isvProto isv) sub2)
+ sub2 = def { domSubmap =
+ Just (M.singleton ("_" ++ isvName isv) sub3) }
+ sub3 = def { domSrv = Just [ NmcRRSrv (isvPrio isv)
+ (isvWeight isv)
+ (isvPort isv)
+ (isvHost isv) ] }
+ Just _ -> empty
+
+-- takeTls is almost, but not quite, entirely unlike takeSrv
+takeTls :: Object -> Parser (Maybe (Map String NmcDom))
+takeTls o = o .:? "map" -- FIXME
+
class Mergeable a where
merge :: a -> a -> a -- bias towads second arg
instance Eq a => Mergeable [a] where
merge xs ys = union xs ys
-data NmcRRService = NmcRRService
- { srvName :: String
- , srvProto :: String
- , srvPrio :: Int
+data NmcRRSrv = NmcRRSrv
+ { srvPrio :: Int
, srvWeight :: Int
, srvPort :: Int
, srvHost :: String
} deriving (Show, Eq)
-instance FromJSON NmcRRService where
- parseJSON (Array a) =
- if length a == 6 then NmcRRService
- <$> parseJSON (a ! 0)
- <*> parseJSON (a ! 1)
- <*> parseJSON (a ! 2)
- <*> parseJSON (a ! 3)
- <*> parseJSON (a ! 4)
- <*> parseJSON (a ! 5)
- else empty
- parseJSON _ = empty
-
-instance Mergeable NmcRRService where
+instance Mergeable NmcRRSrv where
merge _ b = b
data NmcRRI2p = NmcRRI2p
- { i2pDestination :: String
- , i2pName :: String
- , i2pB32 :: String
+ { i2pDestination :: Maybe String
+ , i2pName :: Maybe String
+ , i2pB32 :: Maybe String
} deriving (Show, Eq)
instance FromJSON NmcRRI2p where
parseJSON (Object o) = NmcRRI2p
- <$> o .: "destination"
- <*> o .: "name"
- <*> o .: "b32"
+ <$> o .:? "destination"
+ <*> o .:? "name"
+ <*> o .:? "b32"
parseJSON _ = empty
instance Mergeable NmcRRI2p where
merge _ b = b
-data NmcRRTls = NmcRRTls
+data NmcRRTlsa = NmcRRTlsa
{ tlsMatchType :: Int -- 0:exact 1:sha256 2:sha512
, tlsMatchValue :: String
, tlsIncSubdoms :: Int -- 1:enforce on subdoms 0:no
} deriving (Show, Eq)
-instance FromJSON NmcRRTls where
- parseJSON (Array a) =
- if length a == 3 then NmcRRTls
- <$> parseJSON (a ! 0)
- <*> parseJSON (a ! 1)
- <*> parseJSON (a ! 2)
- else empty
- parseJSON _ = empty
-
-instance Mergeable NmcRRTls where
+instance Mergeable NmcRRTlsa where
merge _ b = b
data NmcRRDs = NmcRRDs
instance Mergeable NmcRRDs where
merge _ b = b
-data NmcDom = NmcDom { domService :: Maybe [NmcRRService]
- , domIp :: Maybe [String]
+data NmcDom = NmcDom { domIp :: Maybe [String]
, domIp6 :: Maybe [String]
, domTor :: Maybe String
, domI2p :: Maybe NmcRRI2p
, domNs :: Maybe [String]
, domDelegate :: Maybe String
, domImport :: Maybe [String]
- , domMap :: Maybe (Map String NmcDom)
+ , domSubmap :: Maybe (Map String NmcDom)
, domFingerprint :: Maybe [String]
- , domTls :: Maybe (Map String
- (Map String [NmcRRTls]))
, domDs :: Maybe [NmcRRDs]
- , domMx :: Maybe [String] -- Synthetic
- , domSrv :: Maybe [String] -- Synthetic
+ , domMx :: Maybe [String] -- Synthetic
+ , domSrv :: Maybe [NmcRRSrv] -- Synthetic
+ , domTlsa :: Maybe [NmcRRTlsa] -- Synthetic
} deriving (Show, Eq)
+instance Default NmcDom where
+ def = NmcDom Nothing Nothing Nothing Nothing Nothing Nothing Nothing
+ Nothing Nothing Nothing Nothing Nothing Nothing Nothing
+ Nothing Nothing Nothing Nothing Nothing
+
instance FromJSON NmcDom where
-- Wherever we expect a domain object, there may be a string
-- containing IPv4 address. Interpret it as such.
-- Question: shall we try to recognize IPv6 addresses too?
parseJSON (String s) =
return $ if isIPv4 s'
- then emptyNmcDom { domIp = Just [s'] }
- else emptyNmcDom
+ then def { domIp = Just [s'] }
+ else def
where
s' = unpack s
isIPv4 x = all isNibble $ splitOn "." x
if all isDigit x then (read x :: Int) < 256
else False
parseJSON (Object o) = NmcDom
- <$> o .:? "service"
- <*> o .:/ "ip"
+ <$> o .:/ "ip"
<*> o .:/ "ip6"
<*> o .:? "tor"
<*> o .:? "i2p"
<*> o .:/ "ns"
<*> o .:? "delegate"
<*> o .:/ "import"
- <*> o .:? "map"
+ <*> makeSubmap o
<*> o .:/ "fingerprint"
- <*> o .:? "tls"
<*> o .:? "ds"
- <*> return Nothing -- domMx not parsed
- <*> return Nothing -- domSrv not parsed
+ <*> makeMx o
+ <*> return Nothing -- domSrv created in subdomains
+ <*> return Nothing -- domTlsa created in subdomains
parseJSON _ = empty
instance Mergeable NmcDom where
- merge sub dom = dom { domService = mergelm domService
- , domIp = mergelm domIp
+ merge sub dom = dom { domIp = mergelm domIp
, domIp6 = mergelm domIp6
, domTor = choose domTor
, domI2p = mergelm domI2p
, domNs = mergelm domNs
, domDelegate = mergelm domDelegate
, domImport = mergelm domImport
- , domMap = mergelm domMap
+ , domSubmap = mergelm domSubmap
, domFingerprint = mergelm domFingerprint
- , domTls = mergelm domTls
, domDs = mergelm domDs
, domMx = mergelm domMx
, domSrv = mergelm domSrv
+ , domTlsa = mergelm domTlsa
}
where
mergelm x = merge (x sub) (x dom)
choose field = case field dom of
Nothing -> field sub
Just x -> Just x
-
-mergeNmcDom :: NmcDom -> NmcDom -> NmcDom
-mergeNmcDom = merge
-
-emptyNmcDom = NmcDom Nothing Nothing Nothing Nothing Nothing Nothing
- Nothing Nothing Nothing Nothing Nothing Nothing
- Nothing Nothing Nothing Nothing Nothing Nothing
- Nothing Nothing
projects / pdns-pipe-nmc.git / blobdiff