separate Namecoin RPC from domain data

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

diff --git a/pdns-pipe-nmc.hs b/pdns-pipe-nmc.hs
index a933c9ca70ade2f57d3c3a46b91b80923bf41d90..4d47e5045bcc10c70b5d8c3bfcd56d99f432a669 100644 (file)
--- a/pdns-pipe-nmc.hs
+++ b/pdns-pipe-nmc.hs
@@ -2,10 +2,11 @@
 
 module Main where
 
+import System.IO
 import Control.Monad
 import qualified Data.ByteString.Char8 as C (pack, unpack)
 import qualified Data.ByteString.Lazy.Char8 as L (pack, unpack)
-import Data.ByteString.Lazy as BS hiding (reverse, putStrLn)
+import Data.ByteString.Lazy as BS hiding (reverse, putStr, putStrLn)
 import Data.List.Split
 import Data.Aeson (encode, decode, Value(..))
 import Network.HTTP.Types
@@ -15,7 +16,8 @@ import Network.HTTP.Conduit
 import JsonRpcClient
 import Config
 import PowerDns
-import NmcJson
+import NmcRpc
+import NmcDom
 
 confFile = "/etc/namecoin.conf"
 
@@ -41,22 +43,30 @@ qReq cf q id = applyBasicAuth (C.pack (rpcuser cf)) (C.pack (rpcpassword cf))
 qRsp :: Response ByteString -> Either String NmcDom
 qRsp rsp =
     case parseJsonRpc (responseBody rsp) :: Either JsonRpcError NmcRes of
-      Left  jerr -> Left $ "Unparseable response: " ++ (show (responseBody rsp))
+      Left  jerr -> 
+        case (jrpcErrCode jerr) of
+          -4 -> Right emptyNmcDom
+          _  -> Left $ "JsonRpc error response: " ++ (show jerr)
       Right jrsp ->
-        case decode (resValue jrsp) :: Maybe NmcDom of
-          Nothing  -> Left $ "Unparseable value: " ++ (show (resValue jrsp))
-          Just dom -> Right dom
+        case resValue jrsp of
+          "" -> Right emptyNmcDom
+          vstr ->
+            case decode vstr :: Maybe NmcDom of
+              Nothing  -> Left $ "Unparseable value: " ++ (show vstr)
+              Just dom -> Right dom
 
 -- NMC interface
 
-queryNmc :: Manager -> Config -> String -> RRType -> String
+queryNmc :: Manager -> Config -> String -> String
          -> IO (Either String NmcDom)
-queryNmc mgr cfg fqdn qtype qid = do
+queryNmc mgr cfg fqdn qid = do
   case reverse (splitOn "." fqdn) of
     "bit":dn:xs -> do
       rsp <- runResourceT $
              httpLbs (qReq cfg (L.pack ("d/" ++ dn)) (L.pack qid)) mgr
-      return $ qRsp rsp
+      return $ case qRsp rsp of
+        Left  err -> Left err
+        Right dom -> Right $ descendNmc xs dom
     _           ->
       return $ Left "Only \".bit\" domain is supported"
 
@@ -66,6 +76,8 @@ main = do
 
   cfg <- readConfig confFile
 
+  hSetBuffering stdin  LineBuffering
+  hSetBuffering stdout LineBuffering
   ver <- do
     let
       loopErr e = forever $ do
@@ -86,14 +98,18 @@ main = do
   forever $ do
     l <- getLine
     case pdnsParse ver l of
-      Left e -> putStrLn $ "ERROR\t" ++ e
+      Left e -> putStr $ pdnsReport e
       Right preq -> do
         case preq of
-          PdnsRequestQ qn qt id lip rip eip -> do
-            ncres <- queryNmc mgr cfg (qName preq) (qType preq) (iD preq)
-            case ncres of
-              Left  e   -> putStrLn $ "ERROR\t" ++ e
-              Right dom -> putStrLn $ pdnsOut dom
+          PdnsRequestQ qname qtype id _ _ _ ->
+            queryNmc mgr cfg qname id >>= putStr . (pdnsOut ver id qname qtype)
           PdnsRequestAXFR xfrreq ->
-            putStrLn ("ERROR\t No support for AXFR " ++ xfrreq)
-          PdnsRequestPing -> putStrLn "OK"
+            putStr $ pdnsReport ("No support for AXFR " ++ xfrreq)
+          PdnsRequestPing -> putStrLn "END"
+
+-- for testing
+
+ask str = do
+  cfg <- readConfig confFile
+  mgr <- newManager def
+  queryNmc mgr cfg str "askid" >>= putStr . (pdnsOut 1 "askid" str RRTypeANY)