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import os, sys
from wptserve.utils import isomorphic_decode
import importlib
subresource = importlib.import_module("common.security-features.subresource.subresource")
def generate_payload(request, server_data):
data = (u'{"headers": %(headers)s}') % server_data
type = b'image'
if b"type" in request.GET:
type = request.GET[b"type"]
if b"id" in request.GET:
request.server.stash.put(request.GET[b"id"], data)
if type == b'image':
return subresource.get_template(u"image.css.template") % {u"id": isomorphic_decode(request.GET[b"id"])}
elif type == b'font':
return subresource.get_template(u"font.css.template") % {u"id": isomorphic_decode(request.GET[b"id"])}
elif type == b'svg':
return subresource.get_template(u"svg.css.template") % {
u"id": isomorphic_decode(request.GET[b"id"]),
u"property": isomorphic_decode(request.GET[b"property"])}
# A `'stylesheet-only'`-type stylesheet has no nested resources; this is
# useful in tests that cover referrers for stylesheet fetches (e.g. fetches
# triggered by `@import` statements).
elif type == b'stylesheet-only':
return u''
def generate_import_rule(request, server_data):
return u"@import url('%(url)s');" % {
u"url": subresource.create_url(request, swap_origin=True,
query_parameter_to_remove=u"import-rule")
}
def generate_report_headers_payload(request, server_data):
stashed_data = request.server.stash.take(request.GET[b"id"])
return stashed_data
def main(request, response):
payload_generator = lambda data: generate_payload(request, data)
content_type = b"text/css"
referrer_policy = b"unsafe-url"
if b"import-rule" in request.GET:
payload_generator = lambda data: generate_import_rule(request, data)
if b"report-headers" in request.GET:
payload_generator = lambda data: generate_report_headers_payload(request, data)
content_type = b'application/json'
if b"referrer-policy" in request.GET:
referrer_policy = request.GET[b"referrer-policy"]
subresource.respond(
request,
response,
payload_generator = payload_generator,
content_type = content_type,
maybe_additional_headers = { b"Referrer-Policy": referrer_policy })