Add prohibited characters filter (SerbiaStrong-220#2538)

* Add prohibited characters filter

* change message comparation

Content.Server/Chat/Managers/ChatManager.cs

@@ -233,6 +233,7 @@ public void TrySendOOCMessage(ICommonSession player, string message, OOCChatType
         switch (type)
         {
             case OOCChatType.OOC:
+                message = DeleteProhibitedCharacters(message, player); // SS220 delete prohibited characters
                 SendOOC(player, message);
                 break;
             case OOCChatType.Admin:

Content.Server/Chat/Managers/IChatManager.cs

@@ -48,5 +48,11 @@ void ChatMessageToMany(ChatChannel channel, string message, string wrappedMessag
         /// <param name="player">The player sending a chat message.</param>
         /// <returns>False if the player has violated rate limits and should be blocked from sending further messages.</returns>
         RateLimitStatus HandleRateLimit(ICommonSession player);
+
+        // SS220 delete prohibited characters begin
+        public string DeleteProhibitedCharacters(string message, EntityUid player);
+
+        public string DeleteProhibitedCharacters(string message, ICommonSession? player = null);
+        // SS220 delete prohibited characters end
     }
 }

Content.Server/Chat/Systems/ChatSystem.cs

@@ -239,6 +239,7 @@ public void TrySendInGameICMessage(
         bool shouldCapitalizeTheWordI = (!CultureInfo.CurrentCulture.IsNeutralCulture && CultureInfo.CurrentCulture.Parent.Name == "en")
             || (CultureInfo.CurrentCulture.IsNeutralCulture && CultureInfo.CurrentCulture.Name == "en");
 
+        message = _chatManager.DeleteProhibitedCharacters(message, source); // SS220 delete prohibited characters
         message = SanitizeInGameICMessage(source, message, out var emoteStr, shouldCapitalize, shouldPunctuate, shouldCapitalizeTheWordI);
 
         // Was there an emote in the message? If so, send it.
@@ -324,6 +325,7 @@ public void TrySendInGameOOCMessage(
         if (player?.AttachedEntity is not { Valid: true } entity || source != entity)
             return;
 
+        message = _chatManager.DeleteProhibitedCharacters(message, source); // SS220 delete prohibited characters
         message = SanitizeInGameOOCMessage(message);
 
         var sendType = type;
@@ -691,6 +693,7 @@ private void SendDeadChat(EntityUid source, ICommonSession player, string messag
     {
         var clients = GetDeadChatClients();
         var playerName = Name(source);
+        message = _chatManager.DeleteProhibitedCharacters(message, player); // SS220 delete prohibited characters
         string wrappedMessage;
         if (_adminManager.IsAdmin(player))
         {

Content.Server/Communications/CommunicationsConsoleSystem.cs

@@ -1,5 +1,6 @@
 using Content.Server.Administration.Logs;
 using Content.Server.AlertLevel;
+using Content.Server.Chat.Managers;
 using Content.Server.Chat.Systems;
 using Content.Server.DeviceNetwork.Components;
 using Content.Server.DeviceNetwork.Systems;
@@ -38,6 +39,7 @@ public sealed class CommunicationsConsoleSystem : EntitySystem
         [Dependency] private readonly UserInterfaceSystem _uiSystem = default!;
         [Dependency] private readonly IConfigurationManager _cfg = default!;
         [Dependency] private readonly IAdminLogManager _adminLogger = default!;
+        [Dependency] private readonly IChatManager _chatManager = default!; // SS220 delete prohibited characters
 
         private const float UIUpdateInterval = 5.0f;
 
@@ -268,6 +270,7 @@ private void OnAnnounceMessage(EntityUid uid, CommunicationsConsoleComponent com
             Loc.TryGetString(comp.Title, out var title);
             title ??= comp.Title;
 
+            msg = _chatManager.DeleteProhibitedCharacters(msg, message.Actor); // SS220 delete prohibited characters
             msg += "\n" + Loc.GetString("comms-console-announcement-sent-by") + " " + author;
             if (comp.Global)
             {

Content.Server/SS220/Chat/ChatManager.Censorship.cs

@@ -0,0 +1,32 @@
+using Content.Shared.Database;
+using Content.Shared.Mind;
+using Robust.Shared.Player;
+using System.Text.RegularExpressions;
+
+namespace Content.Server.Chat.Managers;
+
+internal sealed partial class ChatManager
+{
+    [GeneratedRegex(@"[\u0fd5-\u0fd8\u2500-\u25ff\u2800-\u28ff]+")]
+    private static partial Regex ProhibitedCharactersRegex();
+
+    public string DeleteProhibitedCharacters(string message, EntityUid player)
+    {
+        var mindSystem = _entityManager.System<SharedMindSystem>();
+        mindSystem.TryGetMind(player, out _, out var mind);
+
+        return DeleteProhibitedCharacters(message, mind?.Session);
+    }
+
+    public string DeleteProhibitedCharacters(string message, ICommonSession? player = null)
+    {
+        string censoredMessage = ProhibitedCharactersRegex().Replace(message, string.Empty);
+        if (message.Length != censoredMessage.Length && player != null)
+        {
+            _adminLogger.Add(LogType.Chat, LogImpact.Low, $"{player.Name} tried to send a message with forbidden characters:\n{message}");
+            SendAdminAlert(Loc.GetString("chat-manager-founded-prohibited-characters", ("player", player.Name), ("message", message)));
+        }
+
+        return censoredMessage;
+    }
+}

Resources/Locale/ru-RU/ss220/chat/managers/chat-manager.ftl

@@ -0,0 +1,2 @@
+chat-manager-founded-prohibited-characters = { $player } попытался отправить сообщение с запрещенными символами:
+                                             { $message }