+{-# 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 Data.Aeson (encode, decode, Value(..))
import Network.HTTP.Types
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
"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
mainloop = forever $ do
l <- io getLine
+ gen <- io $ nmcAge
(count, cache) <- get
case pdnsParse ver l of
Left e -> io $ putStr $ pdnsReport e
case preq of
PdnsRequestQ qname qtype id _ _ _ -> do
io $ queryDom (queryOpNmc cfg mgr id) qname
- >>= putStr . (pdnsOutQ ver count qname qtype)
+ >>= putStr . (pdnsOutQ ver count gen qname qtype)
+ {-
-- debug
io $ putStrLn $ "LOG\tRequest number " ++ (show count)
++ " id: " ++ (show id)
++ " qtype: " ++ (show qtype)
++ " cache size: " ++ (show (size cache))
-- end debug
+ -}
put $ stow qname (count, cache)
PdnsRequestAXFR xrq ->
case fetch xrq cache of
pdnsReport ("AXFR for unknown id: " ++ (show xrq))
Just qname ->
io $ queryDom (queryOpNmc cfg mgr xrq) qname
- >>= putStr . (pdnsOutXfr ver count qname)
+ >>= putStr . (pdnsOutXfr ver count gen qname)
PdnsRequestPing -> io $ putStrLn "END"
runStateT mainloop (0, empty) >> return ()
-- helper for command-line tools
-pdnsOut key qt dom =
+pdnsOut gen key qt dom =
case qt of
- "AXFR" -> pdnsOutXfr 1 (-1) key dom
- _ -> pdnsOutQ 1 (-1) key (rrType qt) dom
+ "AXFR" -> pdnsOutXfr 1 (-1) gen key dom
+ _ -> pdnsOutQ 1 (-1) gen key (rrType qt) dom
--- query by key from Namecoin
+-- run one query by key from Namecoin, print domain object and answer
-mainOne key qt = do
+mainOne gen key qt = do
cfg <- readConfig confFile
mgr <- newManager defaultManagerSettings
dom <- queryDom (queryOpNmc cfg mgr (-1)) key
putStrLn $ ppShow dom
- putStr $ pdnsOut key qt 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 qt = do
+mainFile gen key qt = do
dom <- queryDom queryOpFile key
putStrLn $ ppShow dom
- putStr $ pdnsOut key qt 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
- [key, qtype] -> mainOne key qtype
- ["-f" ,key, qtype] -> mainFile key qtype
- _ -> error $ "usage: empty args, or \"[-f] <fqdn> {<TYPE>|ANY|AXFR}\" (type in caps)"
+ [] -> mainPdnsNmc
+ "-f":xs -> with mainFile xs
+ _ -> with mainOne args