wip TLSA

[pdns-pipe-nmc.git] / NmcTransform.hs

diff --git a/NmcTransform.hs b/NmcTransform.hs
index de6fc0f3e82172475c5b722968199e9ad5cb81c3..cc89abeda14e60ffab546c029d2636a9f4973f96 100644 (file)
--- a/NmcTransform.hs
+++ b/NmcTransform.hs
@@ -9,6 +9,7 @@ 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
 
@@ -42,10 +43,10 @@ mergeIncl queryOp depth base = do
     base' = mbase {domDelegate = Nothing, domImport = Nothing}
   -- print base
   if depth <= 0 then return $ Left "Nesting of imports is too deep"
-  else case ((domDelegate mbase), (domImport mbase)) of
-    (Nothing,  Nothing  ) -> return $ Right base'
-    (Nothing,  Just keys) -> foldM mergeIncl1 (Right base') keys
-    (Just key, _        ) -> mergeIncl1 (Right emptyNmcDom) key
+    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
@@ -85,10 +86,10 @@ expandSrv base =
         where
           addSrvMx sr acc = sub1 `mergeNmcDom` acc
             where
-              sub1 = emptyNmcDom { domMap = Just (singleton proto sub2)
+              sub1 = def { domMap = Just (singleton proto sub2)
                                  , domMx = maybemx}
-              sub2 = emptyNmcDom { domMap = Just (singleton srvid sub3) }
-              sub3 = emptyNmcDom { domSrv = Just [srvStr] }
+              sub2 = def { domMap = Just (singleton srvid sub3) }
+              sub3 = def { domSrv = Just [srvStr] }
               proto = "_" ++ (srvProto sr)
               srvid = "_" ++ (srvName sr)
               srvStr =  (show (srvPrio sr)) ++ "\t"
@@ -101,6 +102,30 @@ expandSrv base =
                    && srvPort sr == 25
                 then Just [(show (srvPrio sr)) ++ "\t" ++ (srvHost sr)]
                 else Nothing
+{-
+-- | replace Tls with Tlsa down in the Map
+--   This function is almost, but not quite, entirely unlike expandSrv.
+expandTls :: NmcDom -> NmcDom
+expandTls base =
+  let
+    base' = base { domTls = Nothing }
+  in
+    case domTls base of
+      Nothing -> base'
+      Just sl -> foldr addTlsa base' sl
+        where
+          addTlsa sr acc = sub1 `mergeNmcDom` acc
+            where
+              sub1 = def { domMap = Just (singleton proto sub2) }
+              sub2 = def { domMap = Just (singleton port sub3) }
+              sub3 = def { domTlsa = Just [tlsStr] }
+              proto = "_" ++ (tlsProto sr)
+              port = "_" ++ (tlsName sr)
+              tlsStr =  (show (tlsPrio sr)) ++ "\t"
+                     ++ (show (tlsWeight sr)) ++ " "
+                     ++ (show (tlsPort sr)) ++ " "
+                     ++ (tlsHost sr)
+-}
 
 -- | Convert map elements of the form "subN...sub2.sub1.dom.bit"
 --   into nested map and merge it
@@ -111,17 +136,18 @@ splitSubdoms base =
   in
     case domMap base of
       Nothing -> base'
-      Just sdmap -> (emptyNmcDom { domMap = Just sdmap' }) `mergeNmcDom` base'
+      Just sdmap -> (def { domMap = Just sdmap' }) `mergeNmcDom` base'
         where
           sdmap' = foldrWithKey stow empty sdmap
           stow fqdn sdom acc = insertWith mergeNmcDom fqdn' sdom' acc
             where
               (fqdn', sdom') =
-                nest (map unpack (splitOn (pack ".") (pack fqdn)), sdom)
+                nest (filter (/= "") (splitOnDots fqdn), sdom)
+              splitOnDots s = map unpack (splitOn (pack ".") (pack s))
               nest ([], v)   = (fqdn, v) -- can split result be empty?
               nest ([k], v)  = (k, v)
               nest (k:ks, v) =
-                nest (ks, emptyNmcDom { domMap = Just (singleton k v) })
+                nest (ks, def { domMap = Just (singleton k v) })
  
 -- | Presence of some elements require removal of some others
 normalizeDom :: NmcDom -> NmcDom
@@ -131,7 +157,7 @@ normalizeDom dom = foldr id dom [ translateNormalizer
   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 }
@@ -151,14 +177,14 @@ descendNmcDom queryOp subdom base = do
         Left err     -> return base'
         Right base'' ->
           case domMap base'' of
-            Nothing  -> return $ Right emptyNmcDom
+            Nothing  -> return $ Right def
             Just map ->
               case lookup d map of
-                Nothing  -> return $ Right emptyNmcDom
+                Nothing  -> return $ Right def
                 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])}
+seedNmcDom dn = def { domImport = Just (["d/" ++ dn])}