X-Git-Url: http://www.average.org/gitweb/?p=pdns-pipe-nmc.git;a=blobdiff_plain;f=pdns-pipe-nmc.hs;h=ab3e410de5951ed572dd20fdda70a0956a0b9f0e;hp=737c9e771f4d0c81c32518eae45e97961a332231;hb=ea30e0fbb979aba2ca9e9380a8455e0ed31be075;hpb=a94698b56a0faf340c007fe11b6ac7bcb2c566e2

diff --git a/pdns-pipe-nmc.hs b/pdns-pipe-nmc.hs
index 737c9e7..ab3e410 100644
--- a/pdns-pipe-nmc.hs
+++ b/pdns-pipe-nmc.hs
@@ -2,18 +2,20 @@
 
 module Main where
 
-import Prelude hiding (readFile)
+import Prelude hiding (lookup, 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 Data.ByteString.Lazy hiding (reverse, putStr, putStrLn, head)
+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, lookup, insert, delete, size)
 import Data.Aeson (encode, decode, Value(..))
 import Network.HTTP.Types
 import Data.Conduit
@@ -30,7 +32,7 @@ confFile = "/etc/namecoin.conf"
 
 -- HTTP/JsonRpc interface
 
-qReq :: Config -> String -> String -> Request m
+qReq :: Config -> String -> Int -> Request m
 qReq cf q id = applyBasicAuth (C.pack (rpcuser cf)) (C.pack (rpcpassword cf))
              $ def { host           = (C.pack (rpchost cf))
                    , port           = (rpcport cf)
@@ -43,7 +45,7 @@ qReq cf q id = applyBasicAuth (C.pack (rpcuser cf)) (C.pack (rpcpassword cf))
                                       JsonRpcRequest JsonRpcV1
                                                      "name_show"
                                                      [L.pack q]
-                                                     (String (T.pack id))
+                                                     (String (T.pack (show id)))
                    , checkStatus    = \_ _ _ -> Nothing
                    }
 
@@ -52,8 +54,8 @@ qRsp rsp =
     case parseJsonRpc (responseBody rsp) :: Either JsonRpcError NmcRes of
       Left  jerr -> 
         case (jrpcErrCode jerr) of
-          -4 -> Right "{}"      -- this is how non-existent entry is returned
-          _  -> Left $ "JsonRpc error response: " ++ (show jerr)
+          (-4) -> Right "{}"    -- this is how non-existent entry is returned
+          _    -> Left $ "JsonRpc error response: " ++ (show jerr)
       Right jrsp -> Right $ resValue jrsp
 
 -- NMC interface
@@ -77,6 +79,7 @@ mainPdnsNmc = do
 
   hSetBuffering stdin  LineBuffering
   hSetBuffering stdout LineBuffering
+
   ver <- do
     let
       loopErr e = forever $ do
@@ -94,40 +97,77 @@ mainPdnsNmc = 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 -> putStr $ pdnsReport e
-      Right preq -> do
-        case preq of
-          PdnsRequestQ qname qtype id _ _ _ ->
-            queryDom (queryOpNmc cfg mgr id) qname >>= putStr . (pdnsOut ver id qname qtype)
-          PdnsRequestAXFR xfrreq ->
-            putStr $ pdnsReport ("No support for AXFR " ++ xfrreq)
-          PdnsRequestPing -> putStrLn "END"
+
+  let
+    fetch = lookup
+    -- Save the name under current count, increment count for the next run
+    -- so the name is saved under the count that was put into the response.
+    stow name (count, cache) =
+      (if count >= 99 then 0 else count + 1
+      , insert count name
+          $ delete (if count >= 10 then count - 10 else count + 90) cache
+      )
+    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 . (pdnsOutQ ver count qname qtype)
+  -- debug
+              io $ putStrLn $ "LOG\tRequest number " ++ (show count)
+                           ++ " id: " ++ (show id)
+                           ++ " qname: " ++ qname
+                           ++ " qtype: " ++ (show qtype)
+                           ++ " cache size: " ++ (show (size cache))
+  -- end debug
+              put $ stow qname (count, cache)
+            PdnsRequestAXFR xrq ->
+              case fetch xrq cache of
+                Nothing ->
+                  io $ putStr $
+                    pdnsReport ("AXFR for unknown id: " ++ (show xrq))
+                Just qname ->
+                  io $ queryDom (queryOpNmc cfg mgr xrq) qname
+                    >>= putStr . (pdnsOutXfr ver count qname)
+            PdnsRequestPing -> io $ putStrLn "END"
+
+  runStateT mainloop (0, empty) >> return ()
+
+-- helper for command-line tools
+
+pdnsOut key qt dom =
+  case qt of
+    "AXFR" -> pdnsOutXfr 1 (-1) key dom
+    _      -> pdnsOutQ 1 (-1) key (rrType qt) dom
 
 -- query by key from Namecoin
 
-mainOne key = do
+mainOne key qt = do
   cfg <- readConfig confFile
   mgr <- newManager def
-  dom <- queryDom (queryOpNmc cfg mgr "_") key
+  dom <- queryDom (queryOpNmc cfg mgr (-1)) key
   putStrLn $ ppShow dom
-  putStr $ pdnsOut 1 "_" key RRTypeANY dom
+  putStr $ pdnsOut key qt dom
 
 -- using file backend for testing json domain data
 
-mainFile key = do
+mainFile key qt = do
   dom <- queryDom queryOpFile key
   putStrLn $ ppShow dom
-  putStr $ pdnsOut 1 "+" key RRTypeANY dom
+  putStr $ pdnsOut key qt 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>\""
+    []                 -> mainPdnsNmc
+    [key, qtype]       -> mainOne key qtype
+    ["-f" ,key, qtype] -> mainFile key qtype
+    _ -> error $ "usage: empty args, or \"[-f] <fqdn> {<TYPE>|ANY|AXFR}\" (type in caps)"