import Prelude hiding (lookup)
import Data.ByteString.Lazy (ByteString)
-import Data.Map (empty, lookup, delete, size, singleton)
+import Data.Map.Lazy (empty, lookup, delete, size, singleton
+ , foldrWithKey, insert, insertWith)
import Control.Monad (foldM)
import Data.Aeson (decode)
+import Data.Default.Class (def)
import NmcDom
Nothing -> return $ Left $ "Unparseable value: " ++ (show str)
Just dom -> return $ Right dom
--- | Try to fetch "import" object and merge it into the base domain
--- Original "import" element is removed, but new imports from the
--- imported objects are processed recursively until there are none.
-mergeImport ::
+-- | Try to fetch "delegate" or "import" object and merge them into the
+-- base domain. Original "import" element is removed, but newly
+-- merged data may contain new "import" or "delegate", so the objects
+-- that are about to be merged are processed recursively until there
+-- are no more "import" and "deletage" attributes (or the depth gauge
+-- reaches zero).
+mergeIncl ::
(String -> IO (Either String ByteString)) -- ^ query operation action
-> Int -- ^ recursion counter
-> NmcDom -- ^ base domain
-> IO (Either String NmcDom) -- ^ result with merged import
-mergeImport queryOp depth base = do
+mergeIncl queryOp depth base = do
let
- mbase = (expandSrv . mergeSelf) base
- base' = mbase {domImport = Nothing}
+ mbase = mergeSelf base
+ base' = mbase {domDelegate = Nothing, domImport = Nothing}
-- print base
if depth <= 0 then return $ Left "Nesting of imports is too deep"
- else case domImport mbase of
- Nothing -> return $ Right base'
- Just keys -> foldM mergeImport1 (Right base') keys
- where
- mergeImport1 (Left err) _ = return $ Left err
- mergeImport1 (Right acc) key = do
- sub <- queryNmcDom queryOp key
- case sub of
- Left err -> return $ Left err
- Right sub' -> mergeImport queryOp (depth - 1) $
- sub' `mergeNmcDom` acc
+ else case ((domDelegate mbase), (domImport mbase)) of
+ (Nothing, Nothing ) -> return $ Right base'
+ (Nothing, Just keys) -> foldM mergeIncl1 (Right base') keys
+ (Just key, _ ) -> mergeIncl1 (Right def) key
+ where
+ mergeIncl1 (Left err) _ = return $ Left err -- can never happen
+ mergeIncl1 (Right acc) key = do
+ sub <- queryNmcDom queryOp key
+ case sub of
+ Left err -> return $ Left err
+ Right sub' -> mergeIncl queryOp (depth - 1) $ sub' `merge` acc
-- | 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}
+ map = domSubmap base
+ base' = base {domSubmap = removeSelf map}
removeSelf Nothing = Nothing
removeSelf (Just map) = if size map' == 0 then Nothing else Just map'
where map' = delete "" map
Just map' ->
case lookup "" map' of
Nothing -> base'
- Just sub -> (mergeSelf sub) `mergeNmcDom` base'
+ Just sub -> (mergeSelf sub) `merge` base'
-- recursion depth limited by the size of the record
--- | replace Service with Srv down in the Map
-expandSrv :: NmcDom -> NmcDom
-expandSrv base =
- let
- base' = base { domService = Nothing }
- in
- case domService base of
- Nothing -> base'
- Just sl -> foldr addSrvMx base' sl
- where
- addSrvMx sr acc = sub1 `mergeNmcDom` acc
- where
- sub1 = emptyNmcDom { domMap = Just (singleton proto sub2)
- , domMx = maybemx}
- sub2 = emptyNmcDom { domMap = Just (singleton srvid sub3) }
- sub3 = emptyNmcDom { domSrv = Just [srvStr] }
- proto = "_" ++ (srvProto sr)
- srvid = "_" ++ (srvName sr)
- srvStr = (show (srvPrio sr)) ++ " "
- ++ (show (srvWeight sr)) ++ " "
- ++ (show (srvPort sr)) ++ " "
- ++ (srvHost sr)
- maybemx =
- if srvName sr == "smtp"
- && srvProto sr == "tcp"
- && srvPort sr == 25
- then Just [(show (srvPrio sr)) ++ " " ++ (srvHost sr)]
- else Nothing
+-- | transfer some elements of `base` into `sub`, notably TLSA
+propagate :: NmcDom -> NmcDom -> NmcDom
+propagate base sub = sub -- FIXME implement it
-- | Presence of some elements require removal of some others
normalizeDom :: NmcDom -> NmcDom
where
nsNormalizer dom = case domNs dom of
Nothing -> dom
- Just ns -> emptyNmcDom { domNs = domNs dom, domEmail = domEmail dom }
+ Just ns -> def { domNs = domNs dom, domEmail = domEmail dom }
translateNormalizer dom = case domTranslate dom of
Nothing -> dom
- Just tr -> dom { domMap = Nothing }
+ Just tr -> dom { domSubmap = Nothing }
-- | Merge imports and Selfs and follow the maps tree to get dom
descendNmcDom ::
-> NmcDom -- ^ base domain
-> IO (Either String NmcDom) -- ^ fully processed result
descendNmcDom queryOp subdom base = do
- base' <- mergeImport queryOp 10 base
+ base' <- mergeIncl queryOp 10 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
+ case domSubmap base'' of
+ Nothing -> return $ Right def
Just map ->
case lookup d map of
- Nothing -> return $ Right emptyNmcDom
- Just sub -> descendNmcDom queryOp ds sub
+ Nothing -> return $ Right def
+ Just sub -> descendNmcDom queryOp ds $ propagate base'' 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])}
+seedNmcDom dn = def { domImport = Just (["d/" ++ dn])}
projects / pdns-pipe-nmc.git / blobdiff