X-Git-Url: http://www.average.org/gitweb/?p=pdns-pipe-nmc.git;a=blobdiff_plain;f=pdns-pipe-nmc.hs;h=4bd87582d8a31d1467b4b96cfbd816445a242eea;hp=a3fc8c7c5b2a5a414388c4f4ede60d1f6c94e1a5;hb=f05929457a786046899b21db566ae0428411d690;hpb=b2f5f20509c12bb94783f7035042aed1e0d99c58

diff --git a/pdns-pipe-nmc.hs b/pdns-pipe-nmc.hs
index a3fc8c7..4bd8758 100644
--- a/pdns-pipe-nmc.hs
+++ b/pdns-pipe-nmc.hs
@@ -2,11 +2,20 @@
 
 module Main where
 
+import Prelude hiding (readFile)
+import System.Environment
+import System.IO hiding (readFile)
+import System.IO.Error
+import Control.Exception
+import Text.Show.Pretty hiding (String)
 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 Control.Monad.State
+import Data.ByteString.Lazy hiding (reverse, putStr, putStrLn, head, empty)
+import qualified Data.ByteString.Char8 as C (pack)
+import qualified Data.ByteString.Lazy.Char8 as L (pack)
+import qualified Data.Text as T (pack)
 import Data.List.Split
+import Data.Map.Lazy (Map, empty, insert, delete, size)
 import Data.Aeson (encode, decode, Value(..))
 import Network.HTTP.Types
 import Data.Conduit
@@ -15,13 +24,15 @@ import Network.HTTP.Conduit
 import JsonRpcClient
 import Config
 import PowerDns
-import NmcJson
+import NmcRpc
+import NmcDom
+import NmcTransform
 
 confFile = "/etc/namecoin.conf"
 
 -- HTTP/JsonRpc interface
 
-qReq :: Config -> ByteString -> ByteString -> Request m
+qReq :: Config -> String -> String -> Request m
 qReq cf q id = applyBasicAuth (C.pack (rpcuser cf)) (C.pack (rpcpassword cf))
              $ def { host           = (C.pack (rpchost cf))
                    , port           = (rpcport cf)
@@ -33,45 +44,41 @@ qReq cf q id = applyBasicAuth (C.pack (rpcuser cf)) (C.pack (rpcpassword cf))
                    , requestBody    = RequestBodyLBS $ encode $
                                       JsonRpcRequest JsonRpcV1
                                                      "name_show"
-                                                     [q]
-                                                     (String "pdns-nmc")
+                                                     [L.pack q]
+                                                     (String (T.pack id))
                    , checkStatus    = \_ _ _ -> Nothing
                    }
 
-qRsp :: Response ByteString -> Either String NmcDom
+qRsp :: Response ByteString -> Either String ByteString
 qRsp rsp =
     case parseJsonRpc (responseBody rsp) :: Either JsonRpcError NmcRes of
       Left  jerr -> 
         case (jrpcErrCode jerr) of
-          -4 -> Right emptyNmcDom
+          -4 -> Right "{}"      -- this is how non-existent entry is returned
           _  -> Left $ "JsonRpc error response: " ++ (show jerr)
-      Right jrsp ->
-        case resValue jrsp of
-          "" -> Right emptyNmcDom
-          vstr ->
-            case decode vstr :: Maybe NmcDom of
-              Nothing  -> Left $ "Unparseable value: " ++ (show vstr)
-              Just dom -> Right dom
+      Right jrsp -> Right $ resValue jrsp
 
 -- NMC interface
 
-queryNmc :: Manager -> Config -> String -> String
-         -> IO (Either String NmcDom)
-queryNmc mgr cfg fqdn qid = do
+queryOpNmc cfg mgr qid key =
+  runResourceT (httpLbs (qReq cfg key qid) mgr) >>= return . qRsp
+
+queryOpFile key = catch (readFile key >>= return . Right)
+                        (\e -> return (Left (show (e :: IOException))))
+
+queryDom queryOp fqdn =
   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 $ Left "Only \".bit\" domain is supported"
+    "bit":dn:xs -> descendNmcDom queryOp xs $ seedNmcDom dn
+    _           -> return $ Left "Only \".bit\" domain is supported"
 
--- Main entry
+-- Main entries
 
-main = do
+mainPdnsNmc = do
 
   cfg <- readConfig confFile
 
+  hSetBuffering stdin  LineBuffering
+  hSetBuffering stdout LineBuffering
   ver <- do
     let
       loopErr e = forever $ do
@@ -89,27 +96,52 @@ main = do
   putStrLn $ "OK\tDnsNmc ready to serve, protocol v." ++ (show ver)
 
   mgr <- newManager def
-  forever $ do
-    l <- getLine
-    case pdnsParse ver l of
-      Left e -> putStrLn $ "ERROR\t" ++ e
-      Right preq -> do
-        case preq of
-          PdnsRequestQ qname qtype id _ _ _ -> do
-            ncres <- queryNmc mgr cfg qname id
-            case ncres of
-              Left  e   -> putStrLn $ "ERROR\t" ++ e
-              Right dom -> putStrLn $ pdnsOut qtype dom
-          PdnsRequestAXFR xfrreq ->
-            putStrLn ("ERROR\tNo support for AXFR " ++ xfrreq)
-          PdnsRequestPing -> putStrLn "OK"
-
--- for testing
-
-ask str = do
+  let
+    newcache count name = (insert count name) . (delete (count - 10))
+    io = liftIO
+    mainloop = forever $ do
+      l <- io getLine
+      (count, cache) <- get
+      case pdnsParse ver l of
+        Left e -> io $ putStr $ pdnsReport e
+        Right preq -> do
+          case preq of
+            PdnsRequestQ qname qtype id _ _ _ -> do
+              io $ queryDom (queryOpNmc cfg mgr id) qname
+                     >>= putStr . (pdnsOut ver (show count) qname qtype)
+              io $ putStrLn $ "LOG\tRequest number " ++ (show count)
+                           ++ " id: " ++ id
+                           ++ " qname: " ++ qname
+                           ++ " qtype: " ++ (show qtype)
+                           ++ " cache size: " ++ (show (size cache))
+              put (count + 1, newcache count qname cache)
+            PdnsRequestAXFR xfrreq ->
+              io $ putStr $ pdnsReport ("No support for AXFR " ++ xfrreq)
+            PdnsRequestPing -> io $ putStrLn "END"
+  runStateT mainloop (0, empty) >> return ()
+
+-- query by key from Namecoin
+
+mainOne key = do
   cfg <- readConfig confFile
   mgr <- newManager def
-  ncres <- queryNmc mgr cfg str "test-req-id"
-  case ncres of
-    Left  e   -> putStrLn $ "ERROR\t" ++ e
-    Right dom -> putStrLn $ pdnsOut RRTypeANY dom
+  dom <- queryDom (queryOpNmc cfg mgr "_") key
+  putStrLn $ ppShow dom
+  putStr $ pdnsOut 1 "_" key RRTypeANY dom
+
+-- using file backend for testing json domain data
+
+mainFile key = do
+  dom <- queryDom queryOpFile key
+  putStrLn $ ppShow dom
+  putStr $ pdnsOut 1 "+" key RRTypeANY dom
+
+-- Entry point
+
+main = do
+  args <- getArgs
+  case args of
+    []         -> mainPdnsNmc
+    [key]      -> mainOne key
+    ["-f",key] -> mainFile key
+    _ -> error $ "usage: empty args, or \"[-f] <fqdn>\""