From 1685c44c5592fb3043bcf6d29ddd3d7659e8346b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Roman=20Smr=C5=BE?= <roman.smrz@seznam.cz>
Date: Wed, 22 Jan 2020 21:51:57 +0100
Subject: Announce identity update to current peers

---
 src/Identity.hs |  3 ++-
 src/Network.hs  | 35 +++++++++++++++++++++++++++++------
 2 files changed, 31 insertions(+), 7 deletions(-)

diff --git a/src/Identity.hs b/src/Identity.hs
index ce987b2..dcf0ca4 100644
--- a/src/Identity.hs
+++ b/src/Identity.hs
@@ -16,6 +16,7 @@ module Identity (
     displayIdentity,
 ) where
 
+import Control.Arrow
 import Control.Monad
 import Control.Monad.Except
 import qualified Control.Monad.Identity as I
@@ -49,7 +50,7 @@ type ComposedIdentity = Identity []
 type UnifiedIdentity = Identity I.Identity
 
 instance Eq UnifiedIdentity where
-    (==) = (==) `on` idData
+    (==) = (==) `on` (idData &&& idUpdates)
 
 data IdentityData = IdentityData
     { iddPrev :: [Stored (Signed IdentityData)]
diff --git a/src/Network.hs b/src/Network.hs
index 89034da..09cbea1 100644
--- a/src/Network.hs
+++ b/src/Network.hs
@@ -172,10 +172,29 @@ startServer origHead logd bhost services = do
             return sock
 
         loop sock = do
-            let announce identity = do
+            void $ forkIO $ forever $ do
+                readMVar midentity >>= \identity -> do
                     st <- derivePartialStorage storage
                     baddr:_ <- getAddrInfo (Just $ defaultHints { addrSocketType = Datagram }) (Just bhost) (Just discoveryPort)
                     void $ sendTo sock (BL.toStrict $ serializeObject $ transportToObject $ TransportHeader [ AnnounceSelf $ partialRef st $ storedRef $ idData identity ]) (addrAddress baddr)
+                threadDelay $ announceIntervalSeconds * 1000 * 1000
+
+            let announceUpdate identity = do
+                    st <- derivePartialStorage storage
+                    let plaintext = BL.toStrict $ serializeObject $ transportToObject $ TransportHeader $
+                            (AnnounceSelf $ partialRef st $ storedRef $ idData identity) :
+                            map (AnnounceUpdate . partialRef st . storedRef) (idUpdates identity)
+
+                    ps <- readMVar peers
+                    forM_ ps $ \case
+                      peer
+                        | PeerIdentityFull _ <- peerIdentity peer
+                        , ChannelEstablished ch <- peerChannel peer
+                        , DatagramAddress paddr <- peerAddress peer
+                        -> runExceptT (channelEncrypt ch plaintext) >>= \case
+                               Right ctext -> void $ sendTo (peerSocket peer) ctext paddr
+                               Left err -> logd $ "Failed to encrypt data: " ++ err
+                        | otherwise -> return ()
 
             let shareState self shared peer
                     | PeerIdentityFull pid <- peerIdentity peer
@@ -185,15 +204,11 @@ startServer origHead logd bhost services = do
                             Right () -> return ()
                     | otherwise = return ()
 
-            void $ forkIO $ forever $ do
-                announce =<< readMVar midentity
-                threadDelay $ announceIntervalSeconds * 1000 * 1000
-
             watchHead origHead $ \h -> do
                 let idt = headLocalIdentity h
                 changedId <- modifyMVar midentity $ \cur ->
                     return (idt, cur /= idt)
-                when changedId $ announce idt
+                when changedId $ announceUpdate idt
 
                 let shared = lsShared $ load $ headRef h
                 changedShared <- modifyMVar mshared $ \cur ->
@@ -520,6 +535,7 @@ handleChannelAccept identity accref = do
 sendIdentityUpdate :: UnifiedIdentity -> PacketHandler ()
 sendIdentityUpdate self = do
     ist <- gets $ peerInStorage . phPeer
+    addHeader $ AnnounceSelf $ partialRef ist $ storedRef $ idData $ self
     mapM_ addHeader . map (AnnounceUpdate . partialRef ist . storedRef) . idUpdates $ self
 
 
@@ -539,6 +555,12 @@ handleIdentityUpdate :: PacketHandler ()
 handleIdentityUpdate = do
     peer <- gets phPeer
     case (peerIdentity peer, peerIdentityUpdate peer) of
+         (PeerIdentityRef wref, _) -> checkWaitingRef wref >>= \case
+            Just ref | Just pid <- validateIdentity $ wrappedLoad ref -> do
+                updatePeer $ \p -> p { peerIdentity = PeerIdentityFull pid }
+                handleIdentityUpdate
+            _ -> return ()
+
          (PeerIdentityFull pid, wrefs@(_:_)) -> do
              (wrefs', upds) <- fmap partitionEithers $ forM wrefs $ \wref -> checkWaitingRef wref >>= \case
                  Just upd -> return $ Right $ wrappedLoad upd
@@ -547,6 +569,7 @@ handleIdentityUpdate = do
                  { peerIdentity = PeerIdentityFull $ updateOwners upds pid
                  , peerIdentityUpdate = wrefs'
                  }
+
          _ -> return ()
 
 
-- 
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