Feature: Add allowed_hosts to plugin section of config

distribution/changelog.txt

@@ -8,6 +8,7 @@
 - Feature: [#13495] [Plugin] Add properties for park value, guests and company value.
 - Feature: [#13509] [Plugin] Add ability to format strings using OpenRCT2 string framework.
 - Feature: [#13512] [Plugin] Add item separators to list view.
+- Feature: Add allowed_hosts to plugin section of config
 - Change: [#13346] Change FootpathScenery to FootpathAddition in all occurrences.
 - Fix: [#12895] Mechanics are called to repair rides that have already been fixed.
 - Fix: [#13257] Rides that are exactly the minimum objective length are not counted.

src/openrct2/config/Config.cpp

@@ -537,6 +537,7 @@ namespace Config
         {
             auto model = &gConfigPlugin;
             model->enable_hot_reloading = reader->GetBoolean("enable_hot_reloading", false);
+            model->allowed_hosts = reader->GetString("allowed_hosts", "");
         }
     }
 
@@ -545,6 +546,7 @@ namespace Config
         auto model = &gConfigPlugin;
         writer->WriteSection("plugin");
         writer->WriteBoolean("enable_hot_reloading", model->enable_hot_reloading);
+        writer->WriteString("allowed_hosts", model->allowed_hosts);
     }
 
     static bool SetDefaults()

src/openrct2/config/Config.h

@@ -204,6 +204,7 @@ struct FontConfiguration
 struct PluginConfiguration
 {
     bool enable_hot_reloading;
+    std::string allowed_hosts;
 };
 
 enum SORT

src/openrct2/scripting/ScSocket.hpp

@@ -83,6 +83,22 @@ namespace OpenRCT2::Scripting
             return s == "localhost" || s == "127.0.0.1" || s == "::";
         }
 
+        static bool IsOnWhiteList(std::string_view host)
+        {
+            constexpr char delimiter = ',';
+            size_t start_pos = 0;
+            size_t end_pos = 0;
+            while ((end_pos = gConfigPlugin.allowed_hosts.find(delimiter, start_pos)) != std::string::npos)
+            {
+                if (host == gConfigPlugin.allowed_hosts.substr(start_pos, end_pos - start_pos))
+                {
+                    return true;
+                }
+                start_pos = end_pos + 1;
+            }
+            return host == gConfigPlugin.allowed_hosts.substr(start_pos, gConfigPlugin.allowed_hosts.length() - start_pos);
+        }
+
     public:
         ScSocketBase(const std::shared_ptr<Plugin>& plugin)
             : _plugin(plugin)
@@ -166,7 +182,7 @@ namespace OpenRCT2::Scripting
             {
                 duk_error(ctx, DUK_ERR_ERROR, "Socket is already connecting.");
             }
-            else if (!IsLocalhostAddress(host))
+            else if (!IsLocalhostAddress(host) && !IsOnWhiteList(host))
             {
                 duk_error(ctx, DUK_ERR_ERROR, "For security reasons, only connecting to localhost is allowed.");
             }