Files
start-os/agent/src/Daemon/ZeroConf.hs
2021-03-03 10:29:09 -07:00

66 lines
2.3 KiB
Haskell

{-# LANGUAGE TypeApplications #-}
module Daemon.ZeroConf where
import Startlude hiding ( ask )
import Control.Lens
import Control.Effect.Reader.Labelled ( ask )
import Control.Monad.Trans.Reader ( withReaderT )
import Crypto.Hash
import Data.ByteArray ( convert )
import Data.ByteArray.Encoding
import qualified Data.ByteString as BS
import System.FilePath.Lens
import Foundation
import qualified Lib.Avahi as Avahi
import Lib.ProductKey
import Lib.SystemPaths
import Settings
import qualified Lib.Algebra.Domain.AppMgr as AppMgr2
import Control.Carrier.Lift
import Lib.Error
start9AgentServicePrefix :: IsString a => a
start9AgentServicePrefix = "start9-"
getStart9AgentHostname :: (HasFilesystemBase sig m, MonadIO m, ConvertText Text a) => m a
getStart9AgentHostname = do
base <- ask @"filesystemBase"
suffix <-
liftIO
$ decodeUtf8
. convertToBase Base16
. BS.take 4
. convert
. hashWith SHA256
. encodeUtf8
<$> getProductKey base
pure . toS $ start9AgentServicePrefix <> suffix
getStart9AgentHostnameLocal :: (HasFilesystemBase sig m, MonadIO m) => m Text
getStart9AgentHostnameLocal = getStart9AgentHostname <&> (<> ".local")
publishAgentToAvahi :: ReaderT AgentCtx IO ()
publishAgentToAvahi = do
filesystemBase <- asks $ appFilesystemBase . appSettings
start9AgentService <- injectFilesystemBase filesystemBase getStart9AgentHostname
lift $ Avahi.createDaemonConf $ toS start9AgentService
agentPort <- asks $ appPort . appSettings
services <- lift Avahi.listServices
let serviceNames = view basename <$> services
unless (start9AgentService `elem` serviceNames) $ withReaderT appSettings $ Avahi.createService
(toS start9AgentService)
(Avahi.WildcardsEnabled, "%h")
"_http._tcp"
agentPort
lift Avahi.reload
lift $ threadDelay 10_000_000
tid <- asks appLanThread >>= liftIO . takeMVar
liftIO $ killThread tid
tid' <- liftIO $ forkIO (runM . void . runExceptT @S9Error $ AppMgr2.runAppMgrCliC AppMgr2.lanEnable)
asks appLanThread >>= liftIO . flip putMVar tid'