diff options
Diffstat (limited to 'src/Erebos/Network.hs')
| -rw-r--r-- | src/Erebos/Network.hs | 51 |
1 files changed, 43 insertions, 8 deletions
diff --git a/src/Erebos/Network.hs b/src/Erebos/Network.hs index 2064d1c..e9a4182 100644 --- a/src/Erebos/Network.hs +++ b/src/Erebos/Network.hs @@ -6,6 +6,7 @@ module Erebos.Network ( stopServer, getCurrentPeerList, getNextPeerChange, + getServerAddresses, ServerOptions(..), serverIdentity, defaultServerOptions, Peer, peerServer, peerStorage, @@ -46,17 +47,17 @@ import Data.Maybe import Data.Typeable import Data.Word +import Foreign.C.Types +import Foreign.Marshal.Alloc +import Foreign.Marshal.Array import Foreign.Ptr -import Foreign.Storable +import Foreign.Storable as F import GHC.Conc.Sync (unsafeIOToSTM) import Network.Socket hiding (ControlMessage) import qualified Network.Socket.ByteString as S -import Foreign.C.Types -import Foreign.Marshal.Alloc - import Erebos.Channel #ifdef ENABLE_ICE_SUPPORT import Erebos.ICE @@ -83,6 +84,7 @@ announceIntervalSeconds = 60 data Server = Server { serverStorage :: Storage + , serverOptions :: ServerOptions , serverOrigHead :: Head LocalState , serverIdentity_ :: MVar UnifiedIdentity , serverThreads :: MVar [ThreadId] @@ -229,7 +231,7 @@ forkServerThread server act = do return (t:ts) startServer :: ServerOptions -> Head LocalState -> (String -> IO ()) -> [SomeService] -> IO Server -startServer opt serverOrigHead logd' serverServices = do +startServer serverOptions serverOrigHead logd' serverServices = do let serverStorage = headStorage serverOrigHead serverIdentity_ <- newMVar $ headLocalIdentity serverOrigHead serverThreads <- newMVar [] @@ -265,7 +267,7 @@ startServer opt serverOrigHead logd' serverServices = do return sock loop sock = do - when (serverLocalDiscovery opt) $ forkServerThread server $ do + when (serverLocalDiscovery serverOptions) $ forkServerThread server $ do announceAddreses <- fmap concat $ sequence $ [ map (SockAddrInet6 discoveryPort 0 discoveryMulticastGroup) <$> joinMulticast sock , getBroadcastAddresses discoveryPort @@ -377,7 +379,7 @@ startServer opt serverOrigHead logd' serverServices = do , addrFamily = AF_INET6 , addrSocketType = Datagram } - addr:_ <- getAddrInfo (Just hints) Nothing (Just $ show $ serverPort opt) + addr:_ <- getAddrInfo (Just hints) Nothing (Just $ show $ serverPort serverOptions) bracket (open addr) close loop forkServerThread server $ forever $ do @@ -954,8 +956,28 @@ runPeerServiceOn mbservice peer handler = liftIO $ do foreign import ccall unsafe "Network/ifaddrs.h join_multicast" cJoinMulticast :: CInt -> Ptr CSize -> IO (Ptr Word32) +foreign import ccall unsafe "Network/ifaddrs.h local_addresses" cLocalAddresses :: Ptr CSize -> IO (Ptr InetAddress) foreign import ccall unsafe "Network/ifaddrs.h broadcast_addresses" cBroadcastAddresses :: IO (Ptr Word32) -foreign import ccall unsafe "stdlib.h free" cFree :: Ptr Word32 -> IO () +foreign import ccall unsafe "stdlib.h free" cFree :: Ptr a -> IO () + +data InetAddress = InetAddress { fromInetAddress :: IP.IP } + +instance F.Storable InetAddress where + sizeOf _ = sizeOf (undefined :: CInt) + 16 + alignment _ = 8 + + peek ptr = (unpackFamily <$> peekByteOff ptr 0) >>= \case + AF_INET -> InetAddress . IP.IPv4 . IP.fromHostAddress <$> peekByteOff ptr (sizeOf (undefined :: CInt)) + AF_INET6 -> InetAddress . IP.IPv6 . IP.toIPv6b . map fromIntegral <$> peekArray 16 (ptr `plusPtr` sizeOf (undefined :: CInt) :: Ptr Word8) + _ -> fail "InetAddress: unknown family" + + poke ptr (InetAddress addr) = case addr of + IP.IPv4 ip -> do + pokeByteOff ptr 0 (packFamily AF_INET) + pokeByteOff ptr (sizeOf (undefined :: CInt)) (IP.toHostAddress ip) + IP.IPv6 ip -> do + pokeByteOff ptr 0 (packFamily AF_INET6) + pokeArray (ptr `plusPtr` sizeOf (undefined :: CInt) :: Ptr Word8) (map fromIntegral $ IP.fromIPv6b ip) joinMulticast :: Socket -> IO [ Word32 ] joinMulticast sock = @@ -966,6 +988,19 @@ joinMulticast sock = forM [ 0 .. count - 1 ] $ \i -> peekElemOff ptr i +getServerAddresses :: Server -> IO [ SockAddr ] +getServerAddresses Server {..} = do + alloca $ \pcount -> do + ptr <- cLocalAddresses pcount + if ptr == nullPtr + then do + return [] + else do + count <- fromIntegral <$> peek pcount + res <- peekArray count ptr + cFree ptr + return $ map (IP.toSockAddr . (, serverPort serverOptions ) . fromInetAddress) res + getBroadcastAddresses :: PortNumber -> IO [SockAddr] getBroadcastAddresses port = do ptr <- cBroadcastAddresses |