W3C home > Mailing lists > Public > public-webid@w3.org > May 2013

Re: Archaic HTTP "From:" Header

From: mike amundsen <mamund@yahoo.com>
Date: Mon, 27 May 2013 08:39:31 -0400
Message-ID: <CAPW_8m7p=4ZGzB0X-Z-TiAVe6nVTux5=3H_WxkhxX67Wi7eZ7Q@mail.gmail.com>
To: Melvin Carvalho <melvincarvalho@gmail.com>
Cc: Kingsley Idehen <kidehen@openlinksw.com>, "public-rww@w3.org" <public-rww@w3.org>, "public-webid@w3.org" <public-webid@w3.org>
If you decide to register a new header[1] ("webid") I suggest you also
consider registering a Link Relation Value[2] ("webid") so that the WebID
information can be easily included in message bodies (e.g. HTML.LINK,
HTML.A, etc.) when that is appropriate.

[1] http://tools.ietf.org/html/rfc3864#section-4
[2] http://tools.ietf.org/html/rfc5988#section-6.1



mamund
+1.859.757.1449
skype: mca.amundsen
http://amundsen.com/blog/
http://twitter.com/mamund
https://github.com/mamund
http://www.linkedin.com/in/mikeamundsen


On Mon, May 27, 2013 at 8:29 AM, Melvin Carvalho
<melvincarvalho@gmail.com>wrote:

>
>
>
> On 27 May 2013 14:17, mike amundsen <mamund@yahoo.com> wrote:
>
>> Register "webid" as a Link Relation Value and ese the LINK header as in
>> Link: <http://...." rel="webid">
>>
>> This will make sure you don't step on someone else's header, no-one will
>> step our yours. This will also allow you to include it in the header and
>> (when appropriate) include it within a message body.
>>
>
> That could work so how about
>
> [[
> WebID<https://svn.tools.ietf.org/svn/wg/httpbis/draft-ietf-httpbis/latest/p2-semantics.html#header.from>
>
> The "WebID" header field contains a URI for a user who controls the
> requesting user agent.
>
>   WebID    = user
>
>   user = [[ Text linking to URI spec]]
>
> An example is:
>
>   WebID: http://example.org/alice#me <webmaster@example.org>
>
> A user agent *SHOULD NOT* send a WebID header field without explicit
> configuration by the user, since that might conflict with the user's
> privacy interests or their site's security policy.
> Servers *SHOULD NOT* use the WebID header field for access control or
> authentication, without extra out of band entropy, such as a shared secret
> contained in the URL query string or a cookie.
>
> ]]
>
>
>>
>>
>> mamund
>> +1.859.757.1449
>> skype: mca.amundsen
>> http://amundsen.com/blog/
>> http://twitter.com/mamund
>> https://github.com/mamund
>> http://www.linkedin.com/in/mikeamundsen
>>
>>
>> On Mon, May 27, 2013 at 7:18 AM, Melvin Carvalho <
>> melvincarvalho@gmail.com> wrote:
>>
>>>
>>>
>>>
>>> On 3 April 2013 19:18, Kingsley Idehen <kidehen@openlinksw.com> wrote:
>>>
>>>> All,
>>>>
>>>> I think the HTTP "From:" header [1] is now truly archaic circa. 2013.
>>>> If the range of this particular predicate was a URI it would really aid our
>>>> quest for a RWW.
>>>>
>>>> Suggestion:
>>>>
>>>> As part of our RWW bootstrap effort, we could consider an "X-From:"
>>>> header that basically takes a URI or Literal value.
>>>>
>>>> I think we can flesh this out across WebID and RWW via implementations
>>>> before moving up to TAG and IETF.
>>>>
>>>> Mark: what do you think, anyway ? :-)
>>>>
>>>
>>> After some investigation on this:
>>>
>>> Here is the current text, which is slightly different from the RFC
>>>
>>> [[
>>> 5.5.1<https://svn.tools.ietf.org/svn/wg/httpbis/draft-ietf-httpbis/latest/p2-semantics.html#rfc.section.5.5.1>
>>>  From<https://svn.tools.ietf.org/svn/wg/httpbis/draft-ietf-httpbis/latest/p2-semantics.html#header.from>
>>>
>>> The "From" header field contains an Internet email address for a human
>>> user who controls the requesting user agent. The address ought to be
>>> machine-usable, as defined by "mailbox" in Section 3.4<http://tools.ietf.org/html/rfc5322#section-3.4>of
>>> [RFC5322]<https://svn.tools.ietf.org/svn/wg/httpbis/draft-ietf-httpbis/latest/p2-semantics.html#RFC5322>:
>>>
>>>
>>>   From <https://svn.tools.ietf.org/svn/wg/httpbis/draft-ietf-httpbis/latest/p2-semantics.html#header.from>    = mailbox <https://svn.tools.ietf.org/svn/wg/httpbis/draft-ietf-httpbis/latest/p2-semantics.html#header.from>
>>>
>>>   mailbox <https://svn.tools.ietf.org/svn/wg/httpbis/draft-ietf-httpbis/latest/p2-semantics.html#header.from> = <mailbox, defined in [RFC5322] <https://svn.tools.ietf.org/svn/wg/httpbis/draft-ietf-httpbis/latest/p2-semantics.html#RFC5322>, Section 3.4 <http://tools.ietf.org/html/rfc5322#section-3.4>>
>>>
>>> An example is:
>>>
>>>   From: webmaster@example.org
>>>
>>> The From header field is rarely sent by non-robotic user agents. A user
>>> agent *SHOULD NOT* send a From header field without explicit
>>> configuration by the user, since that might conflict with the user's
>>> privacy interests or their site's security policy.
>>>
>>> Robotic user agents *SHOULD* send a valid From header field so that the
>>> person responsible for running the robot can be contacted if problems occur
>>> on servers, such as if the robot is sending excessive, unwanted, or invalid
>>> requests.
>>>
>>> Servers *SHOULD NOT* use the From header field for access control or
>>> authentication, since most recipients will assume that the field value is
>>> public information.
>>>
>>> ]]
>>>
>>> 1. "From" seems to be largely unused according to various sources
>>>
>>> 2. Some people are already using "From" for http URIs
>>>
>>> 3. From my informal straw poll more people are in favour of using HTTP
>>> URIs in From than against (roughly 2 to 1), though those against seem to be
>>> strongly against
>>>
>>> 4. It may be possible to use another header, but that is less intuitive,
>>> and we will need suggestions
>>>
>>> 5. It was pointed out that, what later became known as "WebID" stuffed
>>> an HTTP URI in the header field.
>>>
>>> 6. The User-Agent field is used by spiders such as baidu and google to
>>> give an HTTP URI
>>>
>>> IMHO, this is a valuable use case for identifying on the web, without a
>>> dependency on X.509 certs which are (at least perceived as) very hard to
>>> deploy.  If you want strong security use TLS but it need not be mandatory
>>> for more casual usage.  A use case might be to get a casual social web
>>> going eg via the tabulator extenstion
>>> So the question is which header to use for identity on the web ...
>>>
>>>
>>>>
>>>> --
>>>>
>>>> Regards,
>>>>
>>>> Kingsley Idehen
>>>> Founder & CEO
>>>> OpenLink Software
>>>> Company Web: http://www.openlinksw.com
>>>> Personal Weblog: http://www.openlinksw.com/**blog/~kidehen<http://www.openlinksw.com/blog/~kidehen>
>>>> Twitter/Identi.ca handle: @kidehen
>>>> Google+ Profile: https://plus.google.com/**112399767740508618350/about<https://plus.google.com/112399767740508618350/about>
>>>> LinkedIn Profile: http://www.linkedin.com/in/**kidehen<http://www.linkedin.com/in/kidehen>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>
>
Received on Monday, 27 May 2013 12:40:30 UTC

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