import json
def main(request, response):
headers = [(b"Content-Type", b"text/html")]
if b"allow_csp_from" in request.GET:
headers.append((b"Allow-CSP-From", request.GET[b"allow_csp_from"]))
message = request.GET[b"id"]
return headers, b'''
This page enforces embedder's policies
''' % (message, message)