X-Git-Url: http://www.average.org/gitweb/?p=pdns-pipe-nmc.git;a=blobdiff_plain;f=pdns-pipe-nmc.hs;h=bbe89ab1ccea7025bcf06b7a5ab3cfb426dd2673;hp=d047b4fbe00112617e9508174fd1b3896f7ae9ae;hb=444411783cdc992b99a6d9fe0e0a5922686d1931;hpb=61a1067b335cf064a99ec1c4d36042fe8a685738 diff --git a/pdns-pipe-nmc.hs b/pdns-pipe-nmc.hs index d047b4f..bbe89ab 100644 --- a/pdns-pipe-nmc.hs +++ b/pdns-pipe-nmc.hs @@ -1,23 +1,32 @@ +{-# LANGUAGE CPP #-} {-# LANGUAGE OverloadedStrings #-} module Main where -import Prelude hiding (readFile) +import Prelude hiding (lookup, readFile) import System.Environment +import System.Console.GetOpt import System.IO hiding (readFile) import System.IO.Error +import Data.Time.Clock.POSIX 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 -import Network.HTTP.Conduit +import Network.HTTP.Client +#if MIN_VERSION_http_client(0,3,0) +import Data.Default.Class (def) +#else +import Data.Default (def) +#endif import JsonRpcClient import Config @@ -30,7 +39,7 @@ confFile = "/etc/namecoin.conf" -- HTTP/JsonRpc interface -qReq :: Config -> String -> String -> Request m +qReq :: Config -> String -> Int -> Request qReq cf q id = applyBasicAuth (C.pack (rpcuser cf)) (C.pack (rpcpassword cf)) $ def { host = (C.pack (rpchost cf)) , port = (rpcport cf) @@ -43,7 +52,7 @@ 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 } @@ -52,14 +61,14 @@ 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 queryOpNmc cfg mgr qid key = - runResourceT (httpLbs (qReq cfg key qid) mgr) >>= return . qRsp + httpLbs (qReq cfg key qid) mgr >>= return . qRsp queryOpFile key = catch (readFile key >>= return . Right) (\e -> return (Left (show (e :: IOException)))) @@ -69,7 +78,13 @@ queryDom queryOp fqdn = "bit":dn:xs -> descendNmcDom queryOp xs $ seedNmcDom dn _ -> return $ Left "Only \".bit\" domain is supported" --- Main entries +-- Number of ten minute intervals elapsed since creation of Namecoin +-- on April 18, 2011. Another option would be to use blockcount +-- but that would require another lookup, and we are cheap. +-- Yet another - to use (const - expires_in) from the lookup. +nmcAge = fmap (\x -> floor ((x - 1303070400) / 600)) getPOSIXTime + +-- run a PowerDNS coprocess. Negotiate ABI version and execute requests. mainPdnsNmc = do @@ -77,6 +92,7 @@ mainPdnsNmc = do hSetBuffering stdin LineBuffering hSetBuffering stdout LineBuffering + ver <- do let loopErr e = forever $ do @@ -93,42 +109,86 @@ 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" - --- query by key from Namecoin - -mainOne key = do + mgr <- newManager defaultManagerSettings + + 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 + gen <- io $ nmcAge + (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 gen 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 gen qname) + PdnsRequestPing -> io $ putStrLn "END" + + runStateT mainloop (0, empty) >> return () + +-- helper for command-line tools + +pdnsOut gen key qt dom = + case qt of + "AXFR" -> pdnsOutXfr 1 (-1) gen key dom + _ -> pdnsOutQ 1 (-1) gen key (rrType qt) dom + +-- run one query by key from Namecoin, print domain object and answer + +mainOne gen key qt = do cfg <- readConfig confFile - mgr <- newManager def - dom <- queryDom (queryOpNmc cfg mgr "_") key + mgr <- newManager defaultManagerSettings + dom <- queryDom (queryOpNmc cfg mgr (-1)) key putStrLn $ ppShow dom - putStr $ pdnsOut 1 "_" key RRTypeANY dom + putStr $ pdnsOut gen key qt dom --- using file backend for testing json domain data +-- get data from the file, print domain object and answer -mainFile key = do +mainFile gen key qt = do dom <- queryDom queryOpFile key putStrLn $ ppShow dom - putStr $ pdnsOut 1 "+" key RRTypeANY dom + putStr $ pdnsOut gen key qt dom -- Entry point main = do args <- getArgs + gen <- nmcAge + let + with f xs = case xs of + [qfqdn, qtype] -> f gen qfqdn qtype + _ -> error $ "usage: empty args, or \"[-f] {|ANY|AXFR}\"" + ++ " (type in caps)" case args of - [] -> mainPdnsNmc - [key] -> mainOne key - ["-f",key] -> mainFile key - _ -> error $ "usage: empty args, or \"[-f] \"" + [] -> mainPdnsNmc + "-f":xs -> with mainFile xs + _ -> with mainOne args