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Re: XDomainRequest Integration with AC

From: Jonas Sicking <jonas@sicking.cc>
Date: Wed, 30 Jul 2008 10:31:43 -0700
Message-ID: <4890A57F.6030505@sicking.cc>
To: Sunava Dutta <sunavad@windows.microsoft.com>
Cc: Maciej Stachowiak <mjs@apple.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>

And note that this syntax should be supported even in the public data 
scenario.

/ Jonas

Jonas Sicking wrote:
> 
> Please note that
> 
> Access-Control-Allow-Origin: url
> 
> is also allowed syntax. Where the url must contain only scheme, domain 
> and host.
> 
> So the following syntax is allowed:
> Access-Control-Allow-Origin: http://example.com
> 
> It is somewhat unclear if the following syntaxes are allowed:
> 
> Access-Control-Allow-Origin: http://example.com/
> Access-Control-Allow-Origin: http://example.com/?
> Access-Control-Allow-Origin: http://example.com/#
> Access-Control-Allow-Origin: http://example.com/;
> 
> 
> I think the first one should be ok, but not the other three.
> 
> / Jonas
> 
> 
> 
> Sunava Dutta wrote:
>> Access-Control-Allow-Origin: * seems to be the consensus for the 
>> public scenario, please confirm.
>> On a less urgent note did we get any further traction on the 
>> discussion on angle brackets for the URL specified scenario? The last 
>> mail here seems to be on 7/21.
>>
>>
>>> -----Original Message-----
>>> From: Maciej Stachowiak [mailto:mjs@apple.com]
>>> Sent: Saturday, July 19, 2008 9:32 PM
>>> To: Jonas Sicking
>>> Cc: Sunava Dutta; annevk@opera.com; Sharath Udupa; Zhenbin Xu; Gideon
>>> Cohn; public-webapps@w3.org; IE8 Core AJAX SWAT Team
>>> Subject: Re: XDomainRequest Integration with AC
>>>
>>>
>>> On Jul 18, 2008, at 11:15 PM, Jonas Sicking wrote:
>>>
>>>> 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>
>>> I don't think the angle brackets are necessary for forward compat,
>>> since we can just disallow spaces from the URL.
>>>
>>>   - Maciej
>>>
>>>>
>>>> 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 Wednesday, 30 July 2008 17:34:46 GMT

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