#9223 - Deny access to Trac /subjects witohut parameters

modules/trac/templates/fcgi.conf.erb

 location <%= @location_base %>/
 {
+
+  location <%= @location_base %>/subjects
+  {
+    if ($arg_q = "")
+    {
+      return 403;
+    }
+
+    if ($arg_limit = "")
+    {
+      return 403;
+    }
+  }
+
   fastcgi_pass unix:/tmp/<%= @name %>-fastcgi.sock;
   fastcgi_split_path_info ^(<%= @location_base %>)(.*)$;
   include /etc/nginx/fastcgi_params;
   fastcgi_param SCRIPT_NAME $fastcgi_script_name;
   fastcgi_param PATH_INFO $fastcgi_path_info;
   client_max_body_size 20m;
 }
 
 location <%= @location_base %>/chrome/
 {
   alias /home/trac/htdocs-<%= @name %>/htdocs/;
 }
 
 location <%= @location_base %>/robots.txt
 {
   alias /home/trac/robots.txt;
 }