module NmcDom ( NmcDom(..)
, emptyNmcDom
+ , seedNmcDom
, descendNmcDom
- , queryNmcDom
- , mergeImport
) where
+import Prelude hiding (length)
import Data.ByteString.Lazy (ByteString)
-import qualified Data.ByteString.Lazy.Char8 as L (pack)
import qualified Data.Text as T (unpack)
import Data.List.Split
import Data.Char
-import Data.Map as M (Map, lookup)
+import Data.Map as M (Map, lookup, delete, size)
+import Data.Vector (toList,(!),length)
import Control.Applicative ((<$>), (<*>), empty)
import Data.Aeson
-data NmcRRService = NmcRRService -- unused
+data NmcRRService = NmcRRService
{ srvName :: String
, srvProto :: String
, srvW1 :: Int
, srvW2 :: Int
, srvPort :: Int
- , srvHost :: [String]
+ , srvHost :: String
} deriving (Show, Eq)
instance FromJSON NmcRRService where
- parseJSON (Object o) = NmcRRService
- <$> o .: "name"
- <*> o .: "proto"
- <*> o .: "w1"
- <*> o .: "w2"
- <*> o .: "port"
- <*> o .: "host"
- parseJSON _ = empty
+ 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
data NmcRRI2p = NmcRRI2p
{ i2pDestination :: String
<*> o .: "b32"
parseJSON _ = empty
-data NmcDom = NmcDom { domService :: Maybe [[String]] -- [NmcRRService]
+data NmcDom = NmcDom { domService :: Maybe [NmcRRService]
, domIp :: Maybe [String]
, domIp6 :: Maybe [String]
, domTor :: Maybe String
Nothing Nothing Nothing Nothing Nothing Nothing
Nothing Nothing Nothing Nothing Nothing Nothing
-normalizeDom :: NmcDom -> NmcDom
-normalizeDom dom
- | domNs dom /= Nothing = emptyNmcDom { domNs = domNs dom
- , domEmail = domEmail dom
- }
- | domDelegate dom /= Nothing = emptyNmcDom -- FIXME
- | domTranslate dom /= Nothing = dom { domMap = Nothing }
- | otherwise = dom
-
-descendNmcDom :: [String] -> NmcDom -> NmcDom
-descendNmcDom subdom rawdom =
- let dom = normalizeDom rawdom
- in case subdom of
- [] ->
- case domMap dom of
- Nothing -> dom
- Just map ->
- case M.lookup "" map of -- Stupid, but there are "" in the map
- Nothing -> dom -- Try to merge it with the root data
- Just sub -> mergeNmcDom sub dom -- Or maybe drop it altogether...
- d:ds ->
- case domMap dom of
- Nothing -> emptyNmcDom
- Just map ->
- case M.lookup d map of
- Nothing -> emptyNmcDom
- Just sub -> descendNmcDom ds sub
-
-- FIXME -- I hope there exists a better way to merge records!
mergeNmcDom :: NmcDom -> NmcDom -> NmcDom
mergeNmcDom sub dom = dom { domService = choose domService
, domNs = choose domNs
, domDelegate = choose domDelegate
, domImport = choose domImport
+ , domMap = choose domMap
, domFingerprint = choose domFingerprint
, domTls = choose domTls
, domDs = choose domDs
-- | Perform query and return error string or parsed domain object
queryNmcDom ::
- (ByteString -> IO (Either String ByteString)) -- ^ query operation action
- -> ByteString -- ^ key
- -> IO (Either String NmcDom) -- ^ error string or domain
+ (String -> IO (Either String ByteString)) -- ^ query operation action
+ -> String -- ^ key
+ -> IO (Either String NmcDom) -- ^ error string or domain
queryNmcDom queryOp key = do
l <- queryOp key
case l of
Just dom -> return $ Right dom
-- | Try to fetch "import" object and merge it into the base domain
--- Any errors are ignored, and nothing is merged.
-- Original "import" element is removed, but new imports from the
-- imported objects are processed recursively until there are none.
mergeImport ::
- (ByteString -> IO (Either String ByteString)) -- ^ query operation action
- -> NmcDom -- ^ base domain
- -> IO NmcDom -- ^ result with merged import
+ (String -> IO (Either String ByteString)) -- ^ query operation action
+ -> NmcDom -- ^ base domain
+ -> IO (Either String NmcDom) -- ^ result with merged import
mergeImport queryOp base = do
- let base' = base {domImport = Nothing}
- -- print base'
- case domImport base of
- Nothing -> return base'
+ let
+ mbase = mergeSelf base
+ base' = mbase {domImport = Nothing}
+ -- print base
+ case domImport mbase of
+ Nothing -> return $ Right base'
Just key -> do
- sub <- queryNmcDom queryOp (L.pack key)
+ sub <- queryNmcDom queryOp key
case sub of
- Left e -> return base'
+ Left e -> return $ Left e
Right sub' -> mergeImport queryOp $ sub' `mergeNmcDom` base'
+
+-- | If there is an element in the map with key "", merge the contents
+-- and remove this element. Do this recursively.
+mergeSelf :: NmcDom -> NmcDom
+mergeSelf base =
+ let
+ map = domMap base
+ base' = base {domMap = removeSelf map}
+ removeSelf Nothing = Nothing
+ removeSelf (Just map) = if size map' == 0 then Nothing else Just map'
+ where map' = M.delete "" map
+ in
+ case map of
+ Nothing -> base'
+ Just map' ->
+ case M.lookup "" map' of
+ Nothing -> base'
+ Just sub -> (mergeSelf sub) `mergeNmcDom` base'
+
+-- | Presence of some elements require removal of some others
+normalizeDom :: NmcDom -> NmcDom
+normalizeDom dom = foldr id dom [ translateNormalizer
+ -- , nsNormalizer -- FIXME retrun this
+ ]
+ where
+ nsNormalizer dom = case domNs dom of
+ Nothing -> dom
+ Just ns -> emptyNmcDom { domNs = domNs dom, domEmail = domEmail dom }
+ translateNormalizer dom = case domTranslate dom of
+ Nothing -> dom
+ Just tr -> dom { domMap = Nothing }
+
+-- | Merge imports and Selfs and follow the maps tree to get dom
+descendNmcDom ::
+ (String -> IO (Either String ByteString)) -- ^ query operation action
+ -> [String] -- ^ subdomain chain
+ -> NmcDom -- ^ base domain
+ -> IO (Either String NmcDom) -- ^ fully processed result
+descendNmcDom queryOp subdom base = do
+ base' <- mergeImport queryOp base
+ case subdom of
+ [] -> return $ fmap normalizeDom base'
+ d:ds ->
+ case base' of
+ Left err -> return base'
+ Right base'' ->
+ case domMap base'' of
+ Nothing -> return $ Right emptyNmcDom
+ Just map ->
+ case M.lookup d map of
+ Nothing -> return $ Right emptyNmcDom
+ Just sub -> descendNmcDom queryOp ds sub
+
+-- | Initial NmcDom populated with "import" only, suitable for "descend"
+seedNmcDom ::
+ String -- ^ domain key (without namespace prefix)
+ -> NmcDom -- ^ resulting seed domain
+seedNmcDom dn = emptyNmcDom { domImport = Just ("d/" ++ dn)}
projects / pdns-pipe-nmc.git / blobdiff