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{-# LANGUAGE OverloadedStrings #-}
module Network.WireGuard.Internal.RpcParsers(
RpcRequest(..),
OpType(..),
RpcSetPayload(..),
RpcDevicePayload(..),
RpcPeerPayload(..),
requestParser,
deviceParser
) where
import Control.Applicative ((*>), (<|>))
import Control.Monad (liftM, join)
import Crypto.Noise.DH (dhSecToBytes, dhBytesToPair)
import Data.Attoparsec.ByteString.Char8 (Parser, string,
takeTill, option)
import Data.Attoparsec.Combinator ((<?>))
import qualified Data.ByteArray as BA (convert)
import qualified Data.ByteString as BS (head)
import Data.ByteString.Conversion
import qualified Data.ByteString.Char8 as BC (pack)
import Data.Maybe (fromMaybe)
import Data.IP (IPRange(..))
import Data.Hex (unhex)
import Data.Word (Word, Word64)
import Data.ByteString (ByteString)
import Network.Socket.Internal (SockAddr)
import Network.WireGuard.Internal.Data.RpcTypes (OpType(..),
RpcRequest(..),
RpcDevicePayload(..),
RpcPeerPayload(..),
RpcSetPayload(..))
-- | Attoparsec parser used to parse a RPC request, both Set or Get.
requestParser :: Parser RpcRequest
requestParser = do
op <- requestTypeParser
let p = case op of
Set -> undefined
Get -> Nothing
_ <- string $ BC.pack "\n\n"
return $ RpcRequest op p
requestTypeParser :: Parser OpType
requestTypeParser = "get=1" *> return Get
<|> "set=1" *> return Set
setPayloadParser :: Parser RpcSetPayload
setPayloadParser = undefined
deviceParser :: Parser RpcDevicePayload
deviceParser = do
pkHex <- option Nothing (unhex <$> keyParser "private_key") <?> "Primary key parser"
"\n"
let pk = join $ (dhBytesToPair . BA.convert) <$> pkHex
p <- (fromMaybe 0 . fromByteString) <$> keyParser "listen_port" <?> "Port parser"
"\n"
fwmark <- option Nothing (fromByteString <$> keyParser "fwmark") <?> "Fwmark parser"
return $ RpcDevicePayload pk p fwmark False
keyParser :: ByteString -> Parser ByteString
keyParser str = (string str *> "=") *> takeTill (=='\n')
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