- From: Jonas Sicking <jonas@sicking.cc>
- Date: Fri, 18 Jul 2008 23:15:06 -0700
- To: Maciej Stachowiak <mjs@apple.com>
- Cc: Sunava Dutta <sunavad@windows.microsoft.com>, "annevk@opera.com" <annevk@opera.com>, Sharath Udupa <Sharath.Udupa@microsoft.com>, Zhenbin Xu <Zhenbin.Xu@microsoft.com>, Gideon Cohn <gidco@windows.microsoft.com>, "public-webapps@w3.org" <public-webapps@w3.org>, IE8 Core AJAX SWAT Team <ieajax@microsoft.com>
Maciej Stachowiak wrote:
>
> On Jul 18, 2008, at 4:20 PM, Sunava Dutta wrote:
>
>> I’m in time pressure to lock down the header names for Beta 2 to
>> integrate XDR with AC. It seems no body has objected to Jonas’s
>> proposal. http://lists.w3.org/Archives/Public/public-webapps/2008JulSep/0175.html
>> Please let me know if this discussion is closed so we can make the change.
>
> I think Anne's email represents the most recent agreement and I don't
> think anyone has
> objected: http://lists.w3.org/Archives/Public/public-webapps/2008JulSep/0142.html
>
> The change would be:
>
> Instead of checking for "XDomainRequestAllowed: 1" check for
> "Access-Control-Allow-Origin: *" or "Access-Control-Allow-Origin: url"
> where url matches what was sent in the Origin header.
So I have one final request for a change to the above syntax.
How would people feel about the syntax
Access-Control-Allow-Origin: <url>
This would give us at least something for a forwards compatibility story
if we wanted to add to the syntax in future versions of the spec. I
really think we are being overly optimistic if we think that the current
syntax is the be-all end-all syntax that we'll ever want.
For example during the meeting we talked about that banks might want to
enforce that the requesting site uses a certain level of encryption, or
even a certain certificate. A syntax for that might be:
Access-Control-Allow-Origin: origin <https://foo.com> encryption sha1
Or that the site in question uses some opt-in XSS mitigation technology
(such as the one drafted by Brandon Sterns in a previous thread in this
WG). This could be done as
Access-Control-Allow-Origin: origin <https://foo.com> require-xss-protection
So the formal syntax would be
"Access-Control-Allow-Origin:" "<" ("*" | url) ">"
/ Jonas
/ Jonas
Received on Saturday, 19 July 2008 06:15:47 UTC