Re: [webappsec] Agenda for MONDAY Teleconference 2014-10-20, 12:00 PDT

On Mon, Oct 20, 2014 at 5:09 PM, Anne van Kesteren <> wrote:

> On Mon, Oct 20, 2014 at 5:02 PM, Mike West <> wrote:
> > Point taken regarding hooks from Fetch. It's not clear to me what the
> best
> > way to manage that sort of thing is; do you already have ideas about how
> > you'd like such a hook to look?
> Something similar to what we have now. I pass you some objects, you
> return a boolean. (HSTS and REFERRER are harder of course. At least as
> long as we attempt to keep the hook from having side effects, which
> seems like a good thing.)

I was more curious about the ordering.

That is, does MIX or CSP happen first? In Chrome and Firefox, CSP happens
first so that you can use CSP's reporting mechanism to diagnose mixed
content issues. We should ensure that's specified somehow.

As long as there's one hook per spec, that's easy.

> (If you like to write small documents with lots of boilerplate over a

The boilerplate is mostly autogenerated. From a writing perspective, that's
no big deal.

> single document with multiple chapters, up to you I guess. I'd rather

Maybe I'm just a bad writer, but I think it'd be tough to sensibly combine
something like MIX and CSP conceptually. From a Fetch perspective, I
totally understand though: they both give you a "block this request or not"
signal, which is what you care about.

> review a single document on security-related policies. The alternative
> is finding the right links and hope I got them all and that they're
> all the latest, and is annoying at times.)

I think this is an argument for putting together an explainer document
(Service Worker has done well with that
points to the various things you might care about when evaluating a page's
security policy, and linking to that document from various specs. I don't
see it as an argument for joining otherwise unrelated prose into a larger


Mike West <>
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Received on Monday, 20 October 2014 15:40:03 UTC