X-Git-Url: http://www.average.org/gitweb/?p=pdns-pipe-nmc.git;a=blobdiff_plain;f=pdns-pipe-nmc.hs;h=eed57950d49f709b332473de9b14f83d688c6ae4;hp=f2669a23489ef7eae103838bf29ed2dd45c8ce80;hb=b7f5061ef2448f3a0aff1556acb53e8bb0423e48;hpb=b499364fc244111c99b003775c88fcb35633f26b diff --git a/pdns-pipe-nmc.hs b/pdns-pipe-nmc.hs index f2669a2..eed5795 100644 --- a/pdns-pipe-nmc.hs +++ b/pdns-pipe-nmc.hs @@ -2,22 +2,26 @@ 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 +import Data.Default (def) import JsonRpcClient import Config @@ -30,7 +34,7 @@ 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 +47,7 @@ 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 } @@ -52,32 +56,38 @@ 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 -queryNmc :: Manager -> Config -> String -> String - -> IO (Either String NmcDom) -queryNmc mgr cfg qid fqdn = +queryOpNmc cfg mgr qid key = + 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 -> descendNmcDom queryOp xs $ seedNmcDom dn _ -> return $ Left "Only \".bit\" domain is supported" - where - queryOp key = do - rsp <- runResourceT $ httpLbs (qReq cfg key qid) mgr - -- print $ qRsp rsp - return $ qRsp rsp --- Main entry +-- 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. -mainNmc = do +mainPdnsNmc = do cfg <- readConfig confFile hSetBuffering stdin LineBuffering hSetBuffering stdout LineBuffering + ver <- do let loopErr e = forever $ do @@ -94,45 +104,86 @@ mainNmc = 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 _ _ _ -> - queryNmc mgr cfg 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 <- queryNmc mgr cfg "+" key + mgr <- newManager defaultManagerSettings + dom <- queryDom (queryOpNmc cfg mgr (-1)) key putStrLn $ ppShow dom - putStr $ pdnsOut 1 "+" key RRTypeANY dom - --- using file backend for testing json domain data + putStr $ pdnsOut gen key qt dom -queryFile :: String -> IO (Either String ByteString) -queryFile key = catch (readFile key >>= return . Right) - (\e -> return (Left (show (e :: IOException)))) +-- get data from the file, print domain object and answer -mainFile key = do - dom <- descendNmcDom queryFile [] (seedNmcDom key) +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 - [] -> mainNmc - [key] -> mainOne key - ["-f",key] -> mainFile key - _ -> error $ "usage: empty args, or \"\", or \"-f \"" + [] -> mainPdnsNmc + "-f":xs -> with mainFile xs + _ -> with mainOne args