fix gateway destinations (#20172)

Co-authored-by: deltanedas <@deltanedas:kde.org>

Content.Client/Gateway/UI/GatewayBoundUserInterface.cs

@@ -20,7 +20,7 @@ public sealed class GatewayBoundUserInterface : BoundUserInterface
         _window = new GatewayWindow();
         _window.OpenPortal += destination =>
         {
-            SendMessage(new GatewayOpenPortalMessage(EntMan.GetNetEntity(destination)));
+            SendMessage(new GatewayOpenPortalMessage(destination));
         };
         _window.OnClose += Close;
         _window?.OpenCentered();
@@ -29,8 +29,11 @@ public sealed class GatewayBoundUserInterface : BoundUserInterface
     protected override void Dispose(bool disposing)
     {
         base.Dispose(disposing);
-        _window?.Dispose();
+        if (disposing)
-        _window = null;
+        {
+            _window?.Dispose();
+            _window = null;
+        }
     }
 
     protected override void UpdateState(BoundUserInterfaceState state)

Content.Client/Gateway/UI/GatewayWindow.xaml.cs

@@ -16,12 +16,11 @@ namespace Content.Client.Gateway.UI;
 public sealed partial class GatewayWindow : FancyWindow,
     IComputerWindow<EmergencyConsoleBoundUserInterfaceState>
 {
-    private readonly IEntityManager _entManager;
     private readonly IGameTiming _timing;
 
-    public event Action<EntityUid>? OpenPortal;
+    public event Action<NetEntity>? OpenPortal;
     private List<(NetEntity, string, TimeSpan, bool)> _destinations = default!;
-    private EntityUid? _current;
+    private NetEntity? _current;
     private TimeSpan _nextClose;
     private TimeSpan _lastOpen;
     private List<Label> _readyLabels = default!;
@@ -31,14 +30,13 @@ public sealed partial class GatewayWindow : FancyWindow,
     {
         RobustXamlLoader.Load(this);
         var dependencies = IoCManager.Instance!;
-        _entManager = dependencies.Resolve<IEntityManager>();
         _timing = dependencies.Resolve<IGameTiming>();
     }
 
     public void UpdateState(GatewayBoundUserInterfaceState state)
     {
         _destinations = state.Destinations;
-        _current = _entManager.GetEntity(state.Current);
+        _current = state.Current;
         _nextClose = state.NextClose;
         _lastOpen = state.LastOpen;
 
@@ -67,7 +65,7 @@ public sealed partial class GatewayWindow : FancyWindow,
         var now = _timing.CurTime;
         foreach (var dest in _destinations)
         {
-            var uid = _entManager.GetEntity(dest.Item1);
+            var ent = dest.Item1;
             var name = dest.Item2;
             var nextReady = dest.Item3;
             var busy = dest.Item4;
@@ -94,17 +92,17 @@ public sealed partial class GatewayWindow : FancyWindow,
             var openButton = new Button()
             {
                 Text = Loc.GetString("gateway-window-open-portal"),
-                Pressed = uid == _current,
+                Pressed = ent == _current,
                 ToggleMode = true,
                 Disabled = _current != null || busy || now < nextReady
             };
 
             openButton.OnPressed += args =>
             {
-                OpenPortal?.Invoke(uid);
+                OpenPortal?.Invoke(ent);
             };
 
-            if (uid == _entManager.GetEntity(state.Current))
+            if (ent == _current)
             {
                 openButton.AddStyleClass(StyleBase.ButtonCaution);
             }

Content.Server/Gateway/Components/GatewayComponent.cs

@@ -20,7 +20,7 @@ public sealed partial class GatewayComponent : Component
     /// Every other gateway destination on the server.
     /// </summary>
     /// <remarks>
-    /// Added on
+    /// Added on startup and when a new destination portal is created.
     /// </remarks>
     [ViewVariables]
     public HashSet<EntityUid> Destinations = new();

Content.Server/Gateway/Systems/GatewaySystem.cs

@@ -1,4 +1,5 @@
 using Content.Server.Gateway.Components;
+using Content.Shared.Access.Systems;
 using Content.Shared.Gateway;
 using Content.Shared.Teleportation.Components;
 using Content.Shared.Teleportation.Systems;
@@ -13,6 +14,7 @@ namespace Content.Server.Gateway.Systems;
 
 public sealed class GatewaySystem : EntitySystem
 {
+    [Dependency] private readonly AccessReaderSystem _accessReader = default!;
     [Dependency] private readonly IGameTiming _timing = default!;
     [Dependency] private readonly LinkedEntitySystem _linkedEntity = default!;
     [Dependency] private readonly SharedAppearanceSystem _appearance = default!;
@@ -66,7 +68,7 @@ public sealed class GatewaySystem : EntitySystem
 
     private void UpdateUserInterface(EntityUid uid, GatewayComponent comp)
     {
-        var destinations = new List<(NetEntity, String, TimeSpan, bool)>();
+        var destinations = new List<(NetEntity, string, TimeSpan, bool)>();
         foreach (var destUid in comp.Destinations)
         {
             var dest = Comp<GatewayDestinationComponent>(destUid);
@@ -88,6 +90,14 @@ public sealed class GatewaySystem : EntitySystem
 
     private void OnOpenPortal(EntityUid uid, GatewayComponent comp, GatewayOpenPortalMessage args)
     {
+        if (args.Session.AttachedEntity == null)
+            return;
+
+        // if the gateway has an access reader check it before allowing opening
+        var user = args.Session.AttachedEntity.Value;
+        if (!_accessReader.IsAllowed(user, uid))
+            return;
+
         // can't link if portal is already open on either side, the destination is invalid or on cooldown
         var desto = GetEntity(args.Destination);