1 files changed, 10 insertions, 1 deletions
diff --git a/lib/gitlab/backend/grack_auth.rb b/lib/gitlab/backend/grack_auth.rb
index 03cef30c97d..12292f614e9 100644
--- a/lib/gitlab/backend/grack_auth.rb
+++ b/lib/gitlab/backend/grack_auth.rb
@@ -26,7 +26,12 @@ module Grack
       auth!
 
       if project && authorized_request?
-        @app.call(env)
+        if ENV['GITLAB_GRACK_AUTH_ONLY'] == '1'
+          # Tell gitlab-git-http-server the request is OK, and what the GL_ID is
+          render_grack_auth_ok
+        else
+          @app.call(env)
+        end
       elsif @user.nil? && !@gitlab_ci
         unauthorized
       else
@@ -174,6 +179,10 @@ module Grack
       end
     end
 
+    def render_grack_auth_ok
+      [200, { "Content-Type" => "application/json" }, [JSON.dump({ 'GL_ID' => Gitlab::ShellEnv.gl_id(@user) })]]
+    end
+
     def render_not_found
       [404, { "Content-Type" => "text/plain" }, ["Not Found"]]
     end