module Main where
-import System.IO
+import Prelude hiding (readFile)
+import System.Environment
+import System.IO hiding (readFile)
+import System.IO.Error
+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, putStr, putStrLn)
+import Data.ByteString.Lazy hiding (reverse, putStr, putStrLn, head)
+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.Aeson (encode, decode, Value(..))
import Network.HTTP.Types
import PowerDns
import NmcRpc
import NmcDom
+import NmcTransform
confFile = "/etc/namecoin.conf"
-- HTTP/JsonRpc interface
-qReq :: Config -> ByteString -> ByteString -> Request m
+qReq :: Config -> String -> String -> Request m
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 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
+ -4 -> Right "{}" -- this is how non-existent entry is returned
_ -> 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
+ 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 =
+ runResourceT (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 $ case qRsp rsp of
- Left err -> Left err
- Right dom -> Right $ descendNmc xs dom
- _ ->
- return $ Left "Only \".bit\" domain is supported"
+ "bit":dn:xs -> descendNmcDom queryOp xs $ seedNmcDom dn
+ _ -> return $ Left "Only \".bit\" domain is supported"
--- Main entry
+-- Main entries
-main = do
+mainPdnsNmc = do
cfg <- readConfig confFile
Right preq -> do
case preq of
PdnsRequestQ qname qtype id _ _ _ ->
- queryNmc mgr cfg qname id >>= putStr . (pdnsOut ver id qname qtype)
+ queryDom (queryOpNmc cfg mgr id) qname
+ >>= putStr . (pdnsOut ver id qname qtype)
PdnsRequestAXFR xfrreq ->
putStr $ pdnsReport ("No support for AXFR " ++ xfrreq)
PdnsRequestPing -> putStrLn "END"
--- for testing
+-- query by key from Namecoin
-ask str = do
+mainOne key = do
cfg <- readConfig confFile
mgr <- newManager def
- queryNmc mgr cfg str "askid" >>= putStr . (pdnsOut 1 "askid" str RRTypeANY)
+ dom <- queryDom (queryOpNmc cfg mgr "_") key
+ putStrLn $ ppShow dom
+ putStr $ pdnsOut 1 "_" key RRTypeANY dom
+
+-- using file backend for testing json domain data
+
+mainFile key = do
+ dom <- queryDom queryOpFile key
+ putStrLn $ ppShow dom
+ putStr $ pdnsOut 1 "+" key RRTypeANY dom
+
+-- Entry point
+
+main = do
+ args <- getArgs
+ case args of
+ [] -> mainPdnsNmc
+ [key] -> mainOne key
+ ["-f",key] -> mainFile key
+ _ -> error $ "usage: empty args, or \"[-f] <fqdn>\""