+{-# LANGUAGE CPP #-}
{-# LANGUAGE OverloadedStrings #-}
module Main where
+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 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, 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
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 -> Int -> Request
qReq cf q id = applyBasicAuth (C.pack (rpcuser cf)) (C.pack (rpcpassword cf))
$ def { host = (C.pack (rpchost cf))
, port = (rpcport cf)
, requestBody = RequestBodyLBS $ encode $
JsonRpcRequest JsonRpcV1
"name_show"
- [q]
- (String "pdns-nmc")
+ [L.pack q]
+ (String (T.pack (show 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
- _ -> 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
+ (-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 fqdn qid = do
+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 -> 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
+-- 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
-main = do
+-- run a PowerDNS coprocess. Negotiate ABI version and execute requests.
+
+mainPdnsNmc = do
cfg <- readConfig confFile
+ hSetBuffering stdin LineBuffering
+ hSetBuffering stdout LineBuffering
+
ver <- do
let
loopErr e = forever $ 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
+ 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
- ncres <- queryNmc mgr cfg str "test-req-id"
- case ncres of
- Left e -> putStrLn $ "ERROR\t" ++ e
- Right dom -> putStrLn $ pdnsOut RRTypeANY dom
+ mgr <- newManager defaultManagerSettings
+ dom <- queryDom (queryOpNmc cfg mgr (-1)) key
+ putStrLn $ ppShow dom
+ putStr $ pdnsOut gen key qt dom
+
+-- get data from the file, print domain object and answer
+
+mainFile gen key qt = do
+ dom <- queryDom queryOpFile key
+ putStrLn $ ppShow 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] <fqdn> {<TYPE>|ANY|AXFR}\""
+ ++ " (type in caps)"
+ case args of
+ [] -> mainPdnsNmc
+ "-f":xs -> with mainFile xs
+ _ -> with mainOne args
projects / pdns-pipe-nmc.git / blobdiff