module Main where
---import Control.Applicative
+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.Char8 (pack, unpack)
-import Data.ByteString.Lazy hiding (pack, unpack, putStrLn)
-import Data.ConfigFile
-import Data.Either.Utils
+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 Data.JsonRpcClient
-import NmcJson
+import Network.HTTP.Client
+import Data.Default.Class (def)
+-- if you have data-default-0.5.1 import this instead of Data.Default.Class:
+-- import Data.Default (def)
+
+import JsonRpcClient
+import Config
+import PowerDns
+import NmcRpc
+import NmcDom
+import NmcTransform
confFile = "/etc/namecoin.conf"
--- Config file handling
-
-data Config = Config { rpcuser :: String
- , rpcpassword :: String
- , rpchost :: String
- , rpcport :: Int
- } deriving (Show)
-
-readConfig :: String -> IO Config
-readConfig f = do
- cp <- return . forceEither =<< readfile emptyCP f
- return (Config { rpcuser = getSetting cp "rpcuser" ""
- , rpcpassword = getSetting cp "rpcpassword" ""
- , rpchost = getSetting cp "rpchost" "localhost"
- , rpcport = getSetting cp "rpcport" 8336
- })
- where
- getSetting cp x dfl = case get cp "DEFAULT" x of
- Left _ -> dfl
- Right x -> x
-
-- HTTP/JsonRpc interface
-qReq cf q = applyBasicAuth (pack (rpcuser cf)) (pack (rpcpassword cf))
- $ def { host = (pack (rpchost cf))
- , port = (rpcport cf)
- , method = "PUT"
- , requestHeaders = [ (hAccept, "application/json")
- , (hContentType, "application/json")
- , (hConnection, "Keep-Alive")
- ]
- , requestBody = RequestBodyLBS $ encode $
- JsonRpcRequest JsonRpcV1
- "name_show"
- [q]
- (String "pdns-nmc")
- , checkStatus = \_ _ _ -> Nothing
- }
+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)
+ , method = "PUT"
+ , requestHeaders = [ (hAccept, "application/json")
+ , (hContentType, "application/json")
+ , (hConnection, "Keep-Alive")
+ ]
+ , requestBody = RequestBodyLBS $ encode $
+ JsonRpcRequest JsonRpcV1
+ "name_show"
+ [L.pack q]
+ (String (T.pack (show id)))
+ , checkStatus = \_ _ _ -> Nothing
+ }
+
+qRsp :: Response ByteString -> Either String ByteString
+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)
+ Right jrsp -> Right $ resValue jrsp
-- NMC interface
-{-
-queryNmc :: String -> String -> RRType -> String -> IO (Either String NmcDom)
-queryNmc uri fqdn qtype qid = do
- case reverse (splitOn "." fqdn) of
- "bit":dn:xs -> do
- ans <- detailledRemote Version1 [] uri "name_show" $ "d/" ++ dn
- let mdom = decode (resValue ans) :: Maybe NmcDom
- case mdom of
- Nothing -> return $ Left ("Unparseable: " ++ (show (resValue ans)))
- Just dom -> return $ Right dom
- _ ->
- return $ Left "Only \".bit\" domain is supported"
--}
--- PowerDNS ABI
-
-data RRType = RRTypeSRV | RRTypeA | RRTypeAAAA | RRTypeCNAME
- | RRTypeDNAME | RRTypeSOA | RRTypeRP | RRTypeLOC
- | RRTypeNS | RRTypeDS
- | RRTypeANY | RRTypeError String
- deriving (Show)
-
-data PdnsRequest = PdnsRequestQ
- { qName :: String
- , qType :: RRType
- , iD :: String
- , remoteIpAddress :: String
- , localIpAddress :: Maybe String
- , ednsSubnetAddress :: Maybe String
- }
- | PdnsRequestAXFR String
- | PdnsRequestPing
- deriving (Show)
+queryOpNmc cfg mgr qid key =
+ httpLbs (qReq cfg key qid) mgr >>= return . qRsp
-pdnsParse ver s =
- let
- getQt qt = case qt of
- "SRV" -> RRTypeSRV
- "A" -> RRTypeA
- "AAAA" -> RRTypeAAAA
- "CNAME" -> RRTypeCNAME
- "DNAME" -> RRTypeDNAME
- "SOA" -> RRTypeSOA
- "RP" -> RRTypeRP
- "LOC" -> RRTypeLOC
- "NS" -> RRTypeNS
- "DS" -> RRTypeDS
- "ANY" -> RRTypeANY
- _ -> RRTypeError qt
- getLIp ver xs
- | ver >= 2 = case xs of
- x:_ -> Just x
- _ -> Nothing
- | otherwise = Nothing
- getRIp ver xs
- | ver >= 3 = case xs of
- _:x:_ -> Just x
- _ -> Nothing
- | otherwise = Nothing
- in
- case words s of
- "PING":[] -> Right PdnsRequestPing
- "AXFR":x:[] -> Right (PdnsRequestAXFR x)
- "Q":qn:"IN":qt:id:rip:xs -> Right (PdnsRequestQ
- { qName = qn
- , qType = getQt qt
- , iD = id
- , remoteIpAddress = rip
- , localIpAddress = getLIp ver xs
- , ednsSubnetAddress = getRIp ver xs
- })
- _ -> Left s
-
-{-
-pdnsOut :: String -> Either String PdnsRequest -> IO ()
-pdnsOut _ (Left e) = putStrLn ("ERROR\tUnparseable request: " ++ e)
-pdnsOut uri (Right rq) = case rq of
- PdnsRequestQ qn qt id lip rip eip -> do
- dom <- queryNmc uri qn qt id
- case dom of
- Left e -> putStrLn ("ERROR\tNmc query error: " ++ e)
- Right result -> print result
- PdnsRequestAXFR xfrreq ->
- putStrLn ("ERROR\t No support for AXFR " ++ xfrreq)
- PdnsRequestPing -> putStrLn "OK"
--}
-
--- Main entry
+queryOpFile key = catch (readFile key >>= return . Right)
+ (\e -> return (Left (show (e :: IOException))))
-main = do
+queryDom queryOp fqdn =
+ case reverse (splitOn "." fqdn) of
+ "bit":dn:xs -> descendNmcDom queryOp xs $ seedNmcDom dn
+ _ -> return $ Left "Only \".bit\" domain is supported"
+
+-- 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
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
-
- print $ qReq cfg "d/nosuchdomain"
- rsp <- runResourceT $ httpLbs (qReq cfg "d/nosuchdomain") mgr
- print $ (statusCode . responseStatus) rsp
- putStrLn "===== complete response is:"
- print rsp
- let rbody = responseBody rsp
- putStrLn "===== response body is:"
- print rbody
- let result = parseJsonRpc rbody :: Either JsonRpcError NmcRes
- putStrLn "===== parsed response is:"
- print result
--- print $ parseJsonRpc (responseBody rsp)
-
- --forever $ getLine >>= (pdnsOut uri) . (pdnsParse ver)
+ 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 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