Add variables to prevent voting of various kinds (#5361)

* Add a way to disable voting for maximum authoritarianism

* Allow disabling specific vote types via cvars

* Migrate standard-vote-to-cvar dictionary to being static

Content.Client/Voting/UI/VoteCallMenu.xaml.cs

@@ -1,3 +1,4 @@
+using System;
 using Content.Client.Stylesheets;
 using Content.Shared.Voting;
 using JetBrains.Annotations;
@@ -104,8 +105,15 @@ namespace Content.Client.Voting.UI
 
             if (!isAvailable)
             {
-                var remaining = timeout - _gameTiming.RealTime;
-                VoteTypeTimeoutLabel.Text = Loc.GetString("ui-vote-type-timeout", ("remaining", remaining.ToString("mm\\:ss")));
+                if (timeout == TimeSpan.Zero)
+                {
+                    VoteTypeTimeoutLabel.Text = Loc.GetString("ui-vote-type-not-available");
+                }
+                else
+                {
+                    var remaining = timeout - _gameTiming.RealTime;
+                    VoteTypeTimeoutLabel.Text = Loc.GetString("ui-vote-type-timeout", ("remaining", remaining.ToString("mm\\:ss")));
+                }
             }
         }
 

Content.Client/Voting/VoteManager.cs

@@ -186,7 +186,8 @@ namespace Content.Client.Voting
             _standardVoteTimeouts.Clear();
             foreach (var (type, time) in message.VotesUnavailable)
             {
-                _standardVoteTimeouts.Add(type, _gameTiming.RealServerToLocal(time));
+                var fixedTime = (time == TimeSpan.Zero) ? time : _gameTiming.RealServerToLocal(time);
+                _standardVoteTimeouts.Add(type, fixedTime);
             }
 
             CanCallStandardVotesChanged?.Invoke();

Content.Server/Voting/Managers/VoteManager.DefaultVotes.cs

@@ -7,6 +7,7 @@ using Content.Server.RoundEnd;
 using Content.Shared.CCVar;
 using Content.Shared.Voting;
 using Robust.Server.Player;
+using Robust.Shared.Configuration;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
 using Robust.Shared.Localization;
@@ -16,6 +17,13 @@ namespace Content.Server.Voting.Managers
 {
     public sealed partial class VoteManager
     {
+        private static readonly Dictionary<StandardVoteType, CVarDef<bool>> _voteTypesToEnableCVars = new()
+        {
+            {StandardVoteType.Restart, CCVars.VoteRestartEnabled},
+            {StandardVoteType.Preset, CCVars.VotePresetEnabled},
+            {StandardVoteType.Map, CCVars.VoteMapEnabled},
+        };
+
         public void CreateStandardVote(IPlayerSession? initiator, StandardVoteType voteType)
         {
             switch (voteType)

Content.Server/Voting/Managers/VoteManager.cs

@@ -10,6 +10,7 @@ using Content.Server.Afk;
 using Content.Server.Chat.Managers;
 using Content.Server.Maps;
 using Content.Shared.Administration;
+using Content.Shared.CCVar;
 using Content.Shared.Voting;
 using Robust.Server.Player;
 using Robust.Shared.Configuration;
@@ -45,6 +46,7 @@ namespace Content.Server.Voting.Managers
         private readonly Dictionary<StandardVoteType, TimeSpan> _standardVoteTimeout = new();
         private readonly Dictionary<NetUserId, TimeSpan> _voteTimeout = new();
         private readonly HashSet<IPlayerSession> _playerCanCallVoteDirty = new();
+        private readonly StandardVoteType[] _standardVoteTypeValues = Enum.GetValues<StandardVoteType>();
 
         public void Initialize()
         {
@@ -53,6 +55,17 @@ namespace Content.Server.Voting.Managers
 
             _playerManager.PlayerStatusChanged += PlayerManagerOnPlayerStatusChanged;
             _adminMgr.OnPermsChanged += AdminPermsChanged;
+
+            _cfg.OnValueChanged(CCVars.VoteEnabled, value => {
+                DirtyCanCallVoteAll();
+            });
+
+            foreach (var kvp in _voteTypesToEnableCVars)
+            {
+                _cfg.OnValueChanged(kvp.Value, value => {
+                    DirtyCanCallVoteAll();
+                });
+            }
         }
 
         private void AdminPermsChanged(AdminPermsChangedEventArgs obj)
@@ -262,9 +275,21 @@ namespace Content.Server.Voting.Managers
             msg.CanCall = CanCallVote(player, null, out var isAdmin, out var timeSpan);
             msg.WhenCanCallVote = timeSpan;
 
-            msg.VotesUnavailable = isAdmin
-                ? Array.Empty<(StandardVoteType, TimeSpan)>()
-                : _standardVoteTimeout.Select(kv => (kv.Key, kv.Value)).ToArray();
+            if (isAdmin)
+            {
+                msg.VotesUnavailable = Array.Empty<(StandardVoteType, TimeSpan)>();
+            }
+            else
+            {
+                var votesUnavailable = new List<(StandardVoteType, TimeSpan)>();
+                foreach (var v in _standardVoteTypeValues)
+                {
+                    if (CanCallVote(player, v, out var _isAdmin, out var typeTimeSpan))
+                        continue;
+                    votesUnavailable.Add((v, typeTimeSpan));
+                }
+                msg.VotesUnavailable = votesUnavailable.ToArray();
+            }
 
             _netManager.ServerSendMessage(msg, player.ConnectedClient);
         }
@@ -285,13 +310,20 @@ namespace Content.Server.Voting.Managers
                 return true;
             }
 
+            // If voting is disabled, block votes.
+            if (!_cfg.GetCVar(CCVars.VoteEnabled))
+                return false;
+            // Specific standard vote types can be disabled with cvars.
+            if ((voteType != null) && _voteTypesToEnableCVars.TryGetValue(voteType.Value, out var cvar) && !_cfg.GetCVar(cvar))
+                return false;
+
             // Cannot start vote if vote is already active (as non-admin).
             if (_votes.Count != 0)
                 return false;
 
             // Standard vote on timeout, no calling.
             // Ghosts I understand you're dead but stop spamming the restart vote bloody hell.
-            if (voteType != null && _standardVoteTimeout.ContainsKey(voteType.Value))
+            if (voteType != null && _standardVoteTimeout.TryGetValue(voteType.Value, out timeSpan))
                 return false;
 
             return !_voteTimeout.TryGetValue(initiator.UserId, out timeSpan);

Content.Shared/CCVar/CCVars.cs

@@ -431,6 +431,30 @@ namespace Content.Shared.CCVar
          * VOTE
          */
 
+        /// <summary>
+        ///     Allows enabling/disabling player-started votes for ultimate authority
+        /// </summary>
+        public static readonly CVarDef<bool> VoteEnabled =
+            CVarDef.Create("vote.enabled", true, CVar.SERVERONLY);
+
+        /// <summary>
+        ///     See vote.enabled, but specific to restart votes
+        /// </summary>
+        public static readonly CVarDef<bool> VoteRestartEnabled =
+            CVarDef.Create("vote.restart_enabled", true, CVar.SERVERONLY);
+
+        /// <summary>
+        ///     See vote.enabled, but specific to preset votes
+        /// </summary>
+        public static readonly CVarDef<bool> VotePresetEnabled =
+            CVarDef.Create("vote.preset_enabled", true, CVar.SERVERONLY);
+
+        /// <summary>
+        ///     See vote.enabled, but specific to map votes
+        /// </summary>
+        public static readonly CVarDef<bool> VoteMapEnabled =
+            CVarDef.Create("vote.map_enabled", true, CVar.SERVERONLY);
+
         /// <summary>
         ///     The required ratio of the server that must agree for a restart round vote to go through.
         /// </summary>

Content.Shared/Voting/MsgVoteCanCall.cs

@@ -18,6 +18,7 @@ namespace Content.Shared.Voting
         public TimeSpan WhenCanCallVote;
 
         // Which standard votes are currently unavailable, and when will they become available.
+        // The whenAvailable can be null if the reason is something not timeout related.
         public (StandardVoteType type, TimeSpan whenAvailable)[] VotesUnavailable = default!;
 
         // It's possible to be able to call votes but all standard votes to be timed out.

Resources/Locale/en-US/voting/ui/vote-call-menu.ftl

@@ -11,6 +11,9 @@ ui-vote-create-button = Call Vote
 # Timeout text if a standard vote type is currently on timeout.
 ui-vote-type-timeout = This vote was called too recently ({$remaining})
 
+# Unavailable text if a vote type has been disabled manually.
+ui-vote-type-not-available = This vote type has been disabled
+
 # Hue hue hue
 ui-vote-fluff = Powered by Robust™ Anti-Tamper Technology