Core: Require game mod descriptor json to self-identify as one.

1 files changed, 7 insertions, 2 deletions

diff --git a/Source/Core/DiscIO/GameModDescriptor.cpp b/Source/Core/DiscIO/GameModDescriptor.cpp
index 587faafdaf..f1a50ac649 100644
--- a/Source/Core/DiscIO/GameModDescriptor.cpp
+++ b/Source/Core/DiscIO/GameModDescriptor.cpp
@@ -115,10 +115,15 @@ std::optional<GameModDescriptor> ParseGameModDescriptorString(std::string_view j
     return std::nullopt;
 
   GameModDescriptor descriptor;
+  bool is_game_mod_descriptor = false;
   bool is_valid_version = false;
   for (const auto& [key, value] : json_root.get<picojson::object>())
   {
-    if (key == "version" && value.is<double>())
+    if (key == "type" && value.is<std::string>())
+    {
+      is_game_mod_descriptor = value.get<std::string>() == "dolphin-game-mod-descriptor";
+    }
+    else if (key == "version" && value.is<double>())
     {
       is_valid_version = value.get<double>() == 1.0;
     }
@@ -140,7 +145,7 @@ std::optional<GameModDescriptor> ParseGameModDescriptorString(std::string_view j
           ParseRiivolutionObject(json_directory, value.get<picojson::object>());
     }
   }
-  if (!is_valid_version)
+  if (!is_game_mod_descriptor || !is_valid_version)
     return std::nullopt;
   return descriptor;
 }