JsonResponse setCallback throws InvalidArgumentException on valid callback

[Spaggel]

Using Symfony 3.0, trying to set a callback on a JsonResponse fails for the following callback: Utils.callbacks[1].

The pattern in setCallback ^[$_\p{L}] $_\p{L}\p{Mn}\p{Mc}\p{Nd}\p{Pc}\x{200C}\x{200D}]*+$/u fails on anything containing brackets while this could be a valid callback.

This works for me ^[$_\p{L}][$_\p{L}\p{Mn}\p{Mc}\p{Nd}\p{Pc}\.]*+(\x{5b}\S+\x{5d})*$. This allows callbacks like foo.bar[1] but not foo.bar[].

[xabbuh]

Can you provide an example that fails for you?

Edit: Never mind, i missed the part where you mentioned it in the description.

[stof]

See https://github.com/willdurand/JsonpCallbackValidator for the implementation of the proper validation to accept valid callbacks

[Spaggel]

I'm requesting mywebsite.com/function?callback=L.OWM.Utils.callbacks[9].

My function does this (cut a lot of crap on the ....)
$callback = $request->get('callback'); ...... $response = new JsonResponse($result); $response->setCallback($callback); return $response;

But it's giving me an InvalidArgumentException on the part callbacks[9] in the setCallback().

Is this example enough?