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 ba6289944877d8e464d70afbe55ab2ba6f65a8b6..4d47e5045bcc10c70b5d8c3bfcd56d99f432a669 100644 (file)
--- a/pdns-pipe-nmc.hs
+++ b/pdns-pipe-nmc.hs
@@ -2,45 +2,25 @@
 
 module Main where
 
---import Control.Applicative
+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.ConfigFile
-import Data.Either.Utils
+import Data.ByteString.Lazy as BS hiding (reverse, putStr, putStrLn)
 import Data.List.Split
 import Data.Aeson (encode, decode, Value(..))
 import Network.HTTP.Types
 import Data.Conduit
 import Network.HTTP.Conduit
-import Data.JsonRpcClient
+
+import JsonRpcClient
+import Config
 import PowerDns
-import NmcJson
+import NmcRpc
+import NmcDom
 
 confFile = "/etc/namecoin.conf"
 
--- Config file handling
-
-data Config = Config { rpcuser       :: String
-                     , rpcpassword   :: String
-                     , rpchost       :: String
-                     , rpcport       :: Int
-                     } deriving (Show)
-
-readConfig :: String -> IO Config
-readConfig f = do
-  cp <- return . forceEither =<< readfile emptyCP f
-  return (Config { rpcuser       = getSetting cp "rpcuser"     ""
-                 , rpcpassword   = getSetting cp "rpcpassword" ""
-                 , rpchost       = getSetting cp "rpchost"     "localhost"
-                 , rpcport       = getSetting cp "rpcport"     8336
-                 })
-    where
-      getSetting cp x dfl = case get cp "DEFAULT" x of
-                              Left  _ -> dfl
-                              Right x -> x
-
 -- HTTP/JsonRpc interface
 
 qReq :: Config -> ByteString -> ByteString -> Request m
@@ -63,22 +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"
 
@@ -88,6 +76,8 @@ main = do
 
   cfg <- readConfig confFile
 
+  hSetBuffering stdin  LineBuffering
+  hSetBuffering stdout LineBuffering
   ver <- do
     let
       loopErr e = forever $ do
@@ -105,18 +95,21 @@ main = do
   putStrLn $ "OK\tDnsNmc ready to serve, protocol v." ++ (show ver)
 
   mgr <- newManager def
-
-  print $ qReq cfg "d/nosuchdomain" "query-nmc"
-  rsp <- runResourceT $ httpLbs (qReq cfg "d/nosuchdomain" "query-nmc") mgr
-  print $ (statusCode . responseStatus) rsp
-  putStrLn "===== complete response is:"
-  print rsp
-  let rbody = responseBody rsp
-  putStrLn "===== response body is:"
-  print rbody
-  let result = parseJsonRpc rbody :: Either JsonRpcError NmcRes
-  putStrLn "===== parsed response is:"
-  print result
---  print $ parseJsonRpc (responseBody rsp)
-
-  --forever $ getLine >>= (pdnsOut uri) . (pdnsParse ver)
+  forever $ do
+    l <- getLine
+    case pdnsParse ver l of
+      Left e -> putStr $ pdnsReport e
+      Right preq -> do
+        case preq of
+          PdnsRequestQ qname qtype id _ _ _ ->
+            queryNmc mgr cfg qname id >>= putStr . (pdnsOut ver id qname qtype)
+          PdnsRequestAXFR xfrreq ->
+            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)