Implements panic bunkering. (#9315)

* Implements panic bunkering.
Helps with raid management, esp with unknown accounts.

* adds an enable/disable command.

Content.Server/Administration/Commands/PanicBunkerCommand.cs

@@ -0,0 +1,32 @@
+using Content.Shared.Administration;
+using Content.Shared.CCVar;
+using Robust.Shared.Configuration;
+using Robust.Shared.Console;
+
+namespace Content.Server.Administration.Commands;
+
+[AdminCommand(AdminFlags.Server)]
+public sealed class PanicBunkerCommand : IConsoleCommand
+{
+    [Dependency] private readonly IConfigurationManager _cfg = default!;
+
+    public string Command => "panicbunker";
+    public string Description => "Enables or disables the panic bunker functionality.";
+    public string Help => "panicbunker <enabled>";
+    public void Execute(IConsoleShell shell, string argStr, string[] args)
+    {
+        if (args.Length != 1)
+        {
+            shell.WriteError(Loc.GetString("shell-wrong-arguments-number"));
+            return;
+        }
+
+        if (!bool.TryParse(args[0], out var enabled))
+        {
+            shell.WriteError(Loc.GetString("shell-invalid-bool"));
+            return;
+        }
+
+        _cfg.SetCVar(CCVars.PanicBunkerEnabled, enabled);
+    }
+}

Content.Server/Connection/ConnectionManager.cs

@@ -101,6 +101,19 @@ The ban reason is: ""{ban.Reason}""
             }
 
             var adminData = await _dbManager.GetAdminDataForAsync(e.UserId);
+
+            if (_cfg.GetCVar(CCVars.PanicBunkerEnabled))
+            {
+                var record = await _dbManager.GetPlayerRecordByUserId(userId);
+                if ((record is null ||
+                    record.FirstSeenTime.CompareTo(DateTimeOffset.Now - TimeSpan.FromMinutes(_cfg.GetCVar(CCVars.PanicBunkerMinAccountAge))) < 0)
+                    && !await _db.GetWhitelistStatusAsync(userId)
+                    )
+                {
+                    return (ConnectionDenyReason.Panic, Loc.GetString("panic-bunker-account-denied"), null);
+                }
+            }
+
             var wasInGame = EntitySystem.TryGet<GameTicker>(out var ticker) && ticker.PlayersInGame.Contains(userId);
             if ((_plyMgr.PlayerCount >= _cfg.GetCVar(CCVars.SoftMaxPlayers) && adminData is null) && !wasInGame)
             {