2.10.11: security levels (no joining servers/hosts below the required level, OUTDATED in the browser), announcements and maintenance notice from the keymaster in the MSCO menu

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

MultiplayerManager.cs

@@ -71,6 +71,10 @@ namespace MSCO
         const float NeedsInterval = 10f;
 
         void ToastJoined(string name) { toasts.Add(name, "joined the game", UiTheme.Online); }
+
+        const string OutdatedServerText = "This server is outdated - it is missing MSCO security updates. You can join again once its owner has updated it (web panel -> Update).";
+        const string OutdatedHostText = "The host uses an outdated MSCO version that is missing security updates. Ask them to update " +
+                                        "MSCO (start the game once through the MSCO Launcher), then join again.";
         void ToastLeft(string name) { toasts.Add(name, "left the game", UiTheme.Muted); }
         readonly Overlays overlays = new Overlays();
         bool isAdmin;                                          // Server hat uns als Admin gemeldet
@@ -108,6 +112,13 @@ namespace MSCO
         {
             Application.runInBackground = true;
             playerName = PlayerPrefs.GetString(PrefName, System.Environment.UserName);
+            // Neue Ankündigung der MSCO-Admins, während man spielt: kurz einblenden und in die Konsole (F7)
+            SiteStatus.NewAnnouncement += a =>
+            {
+                toasts.Add(a.Title, a.Level == "critical" ? "Important announcement" : "MSCO announcement",
+                           a.Level == "critical" ? UiTheme.Danger : a.Level == "warning" ? UiTheme.Gold : UiTheme.Accent);
+                MscoLog.Info("[MSCO] Announcement: " + a.Title + (string.IsNullOrEmpty(a.Text) ? "" : " - " + a.Text));
+            };
             objects.Send = SendGame;
             // Einkäufe / verbrauchte Items bei uns: allen melden
             objects.ItemAppeared = b =>
@@ -755,6 +766,13 @@ namespace MSCO
             }
             string name = string.IsNullOrEmpty(displayName) ? info.Name : displayName;
             int max = info.MaxPlayers > 0 ? info.MaxPlayers : maxPlayers;
+            // Fehlen dem Server Sicherheitsupdates, nicht beitreten (auch nicht nach Rückfrage)
+            if (info.Security < SiteStatus.RequiredServerSecurity)
+            {
+                DisconnectNotice = OutdatedServerText;
+                SetStatus("Server " + name + " is outdated (security level " + info.Security + ", required " + SiteStatus.RequiredServerSecurity + ")");
+                yield break;
+            }
 
             if (!MSCO.Compatible(info.Version))
             {
@@ -1045,6 +1063,7 @@ namespace MSCO
         void Update()
         {
             CheckHitch();
+            SiteStatus.Tick(); // Ankündigungen, Wartung, Mindest-Sicherheitsstufe vom Keymaster
             CheckJoinRequest();
             // JOIN im Server-Browser (Launcher/Website): ohne Rückfrage verbinden, sobald das Hauptmenü steht.
             // Server-Mods fragen weiterhin extra nach (das sind Programme).
@@ -1319,6 +1338,7 @@ namespace MSCO
                 if (r.Contains("kick")) return "KICKED";
                 if (r.Contains("shutting down") || r.Contains("server stopped") || r.Contains("shut down")) return "SERVER CLOSED";
                 if (r.Contains("could not reconnect")) return "RECONNECT FAILED";
+                if (r.Contains("outdated")) return "UPDATE REQUIRED"; // Server/Host ohne Sicherheitsupdates
                 return "DISCONNECTED";
             }
         }
@@ -1509,6 +1529,9 @@ namespace MSCO
                 w.Write(false); // kein dedizierter Server
                 w.Write(list.Count);
                 foreach (PlayerInfo p in list) { w.Write(p.Id); w.Write(p.Name); }
+                // Unsere Sicherheitsstufe (aktuelle Mods treten veralteten Hosts nicht bei)
+                w.Write(MSCO.SecurityLevel);
+                w.Write(MSCO.ModVersion);
             }));
             session.SendToAll(MsgType.PlayerJoined, NetSession.Build(w => { w.Write(peerId); w.Write(name); }), peerId);
             ToastJoined(name);
@@ -1548,6 +1571,18 @@ namespace MSCO
                         int id = r.ReadInt32();
                         AddPlayer(id, r.ReadString(), id == localId);
                     }
+                    // Sicherheitsstufe des Servers/Hosts (ältere schicken sie nicht = 0): darunter gleich wieder gehen
+                    int level = r.BaseStream.Position < r.BaseStream.Length ? r.ReadInt32() : 0;
+                    if (level < SiteStatus.RequiredServerSecurity)
+                    {
+                        MscoLog.Warning("[MSCO] " + (dedicated ? "Server" : "Host") + " has security level " + level + ", required " +
+                                        SiteStatus.RequiredServerSecurity + " - leaving");
+                        serverReason = dedicated ? OutdatedServerText : OutdatedHostText;
+                        reconnectMessage = null; // nicht immer wieder versuchen
+                        session.Close("Outdated " + (dedicated ? "server" : "host"));
+                        OnSessionEnded(session.CloseReason);
+                        return;
+                    }
                     handshakeDone = true;
                     reconnectMessage = null; // (wieder) verbunden
                     reconnectAttempts = 0;