[foaf-protocols] webid vs distributed social networks

[peter williams]

Ok. Lets work it though

Go get opera browser at http://www.opera.com/. Why? Because it's a team
member, that's all.

Get a client cert using Opera by 
1)	Registering at
http://webid.myxwiki.org/xwiki/bin/register/XWiki/Register
2)	Logging in to the registration portal
3)	Goto Profile page
4)	Complete the enrollment  form, and viola, you have cert in your
browser.

So my profile is http://webid.myxwiki.org/xwiki/bin/view/XWiki/homepw4#me
<http://webid.myxwiki.org/xwiki/bin/view/XWiki/homepw4%23me>  with at least
RDFa of the cert ontology. It may also do n3, turtle, or xml if one
negotiates, for all I know.

Test it (or rather yours): at https://test.gnutls.org:5556/

Let's assume now I run my own instance of https://test.gnutls.org:5556/
acting as a resource server, capable of doing the validation steps of the
webid protocol spec. That is, it shall ping uriburner, to validate the
authentication claims. If that works, it shall do authorization logic A.

The validation agent issues request to  http://uriburner.com/spaql
indicating the SAN URI and the pubkey, both encoded into the sparql query.
Uriburner returns result-set to gnutls, which completes webid protocol run.

So, what is the (quite complex) URI request I GET - to have the uriburner
service test that the pubkey (below, in 2 args) is present in the container
at

http://webid.myxwiki.org/xwiki/bin/view/XWiki/homepw4

and body content


		<div xmlns:foaf="http://xmlns.com/foaf/0.1/"
		xmlns:dct="http://purl.org/dc/terms/"
		xmlns:cert="http://www.w3.org/ns/auth/cert#"
		xmlns:rsa="http://www.w3.org/ns/auth/rsa#"
		xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
		
		about="" typeof="foaf:PersonalProfileDocument"
		class="vcard"
		rel="foaf:primaryTopic" href="#me">
		
		<table title="Existing Keys" summary="A list of public keys
identifying this user">
		<tbody typeof="rsa:RSAPublicKey">
		<tr><td colspan="2" bgcolor="white" rel="cert:identity"
href="#me" align="center">homepw4</td></tr>
		<tr><td>hex modulus</td><td rel="rsa:modulus"><pre
class="hidden" property="cert:hex"
datatype="xsd:string">b520f38479f5803a7ab33233155eeef8ad4e1f575b603f7780f3f6
0ceab1
		34618fbe117539109c015c5f959b497e67c1a3b2c96e5f098bb0bf2a6597
		779d26f55fe8d320de7af0562fd2cd067dbc9d775b22fc06e63422717d00
		a6801dedafd7b54a93c3f4e59538475673972e524f4ec2a3667d0e1ac856
		d532e32bf30cef8c1adc41718920568fbe9f793daeeaeeaa7e8367b7228a
		895a6cf94545a6f6286693277a1bc7750425ce6c35d570e89453117b88ce
		24206afd216a705ad08b7c59
		</pre>b520f38479f5803 ...</td>
		</tr>
		<tr><td>exponent</td>
		<td rel="rsa:public_exponent"><pre property="cert:decimal"
datatype="xsd:string">65537</pre></td>
		</tr>
		</tbody>
		</table>


-----Original Message-----
From: foaf-protocols-bounces at lists.foaf-project.org
[mailto:foaf-protocols-bounces at lists.foaf-project.org] On Behalf Of Kingsley
Idehen
Sent: Saturday, February 26, 2011 5:29 PM
To: foaf-protocols at lists.foaf-project.org
Subject: Re: [foaf-protocols] webid vs distributed social networks

On 2/26/11 1:21 PM, peter williams wrote:
> Is there anywhere a public sparql server willing to take a query on an 
> arbitrary uri (named graph?), pull the foaf card from the public web, 
> perform the query, and return the resultset?

Yes.
> Before it needed $10,000 to continue experimentation, I was once using 
> intellidimension's excellent sparql server. But even it, as I recall, 
> refused to go dynamically get the named graph in a sparql select query 
> from the web (acting as a proxy user agent) and then execute the 
> indicated query on the graph.
>
> Is there something stopping the world doing what TBL advocates with 
> sparql servers?
No, bar comprehension of Linked Data meme without RDF tax.

SPARQL is a nice mechanism for implementing and delivering what is for all
intents and purposes DataDNS  :-)

Links:

1. http://uriburner.com/spaql -- deliberately named URIBurner 2.
http://uriburner.com -- home page explaining the service 3. 
http://virtuoso.openlinksw.com/presentations/SPARQL_Tutorials/SPARQL_Tutoria
ls_Part_7/SPARQL_Tutorials_Part_7.html#(25)
-- example of how a SPARQL query can perform WWW or Intranet crawls via URIs
in query patterns .


-- 

Regards,

Kingsley Idehen	
President&  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen





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