[foaf-protocols] Lots of confusions ...

Melvin Carvalho melvincarvalho at gmail.com
Tue May 18 19:09:20 CEST 2010


2010/5/18 Kingsley Idehen <kidehen at openlinksw.com>

> Melvin Carvalho wrote:
>
>>
>>
>> 2010/5/18 Kingsley Idehen <kidehen at openlinksw.com <mailto:
>> kidehen at openlinksw.com>>
>>
>>
>>    Story Henry wrote:
>>
>>        On 18 May 2010, at 17:26, Kingsley Idehen wrote:
>>
>>
>>            Story Henry wrote:
>>
>>                On 18 May 2010, at 15:29, Melvin Carvalho wrote:
>>
>>
>>                            You don't know what's happening here, do
>>                            you Mr Jones.
>>
>>                        There are a few bugs on the foaf.me
>>                        <http://foaf.me> mailing list.
>>
>>
>>
>>                    Apologies for this.  There was an attempt made to
>>                    refactor the library, but
>>                    it seems some bugs were introduced, that have not
>>                    yet been patched.  I didnt
>>                    actually program this piece, but will attempt to
>>                    work out what's going
>>                    wrong, or see if I can roll back to the previous
>>                    version of the library,
>>                    which was definitely stable.
>>
>>                This could be related to the bug I found last year
>>                that allowed one with Tabulator to edit other people's
>>                foaf graphs.
>>
>>            How can you edit someone else's FOAF graphs if FOAF+SSL
>>            based ACLs are functional?
>>
>>
>>        Nobody is arguing that you could if things worked properly. We
>>        are speaking of bugs here.
>>
>>        These are the types of bugs many people moving from tabular
>>        databases and indeed any other kind of closed world
>>        programming environment to RDF will make. This was my point in
>>        "Are OO Languages Autistic"
>>        http://blogs.sun.com/bblfish/entry/are_oo_languages_autistic
>>
>>        We have all been forced as programmers into bad thinking
>>        habits. So we should be aware of our own mistakes, and help
>>        people joining the community to avoid making them too. This
>>        will be a difficult educational task.
>>
>>
>>    Yes, but I am more concerned about the Tabulator edit aspect of
>>    this.  How does Tabulator enable to edit data in a space to which
>>    you don't have privileges? I haven't looked at Tabulator for a
>>    long time now, but I am somewhat confused re. this turn of events.
>>
>>
>> Tabulator can edit any file that
>>
>> 1) Sends the requisite MS-Author-Via: SPARQL
>> 2) Accepts an HTTP PUT with a SPARQL UPDATE
>>
>
> That I grok since I remember Virtuoso being the first server with those DAV
> extensions in place :-)
>
> What I am concerned about is how this can happen without a space owner
> knowing that DAV should be shutdown. Note, none of these problems will
> happen with Virtuoso (since its in lock down by default). I am just
> concerned about the general case.
>
> Doesn't Tabulator use FOAF+SSL and ACLs?
>

Afiak 0.8.7 has webdav and sparul but not foaf+ssl and/or acls

The current branch is:

hg clone http://dig.csail.mit.edu/hg/tabulator

As you can see some recent edits to the social pane ... so it may be in
progress

http://dig.csail.mit.edu/hg/tabulator/?cmd=changelog;style=gitweb



>
> Kingsley
>
>>
>> I guess (1) should imply (2)
>>
>> I'm not sure we ever formally decided a rule to add foaf+ssl to the mix,
>> but simplest is that if you're authenticated as the webid that 'owns' a
>> 'protected' document. you should be allowed to edit?
>>
>>        Henry
>>
>>
>>
>>    --
>>    Regards,
>>
>>    Kingsley Idehen       President & CEO OpenLink Software     Web:
>>    http://www.openlinksw.com
>>    Weblog: http://www.openlinksw.com/blog/~kidehen<http://www.openlinksw.com/blog/%7Ekidehen>
>>    <http://www.openlinksw.com/blog/%7Ekidehen>
>>    Twitter/Identi.ca: kidehen
>>
>>
>>
>>
>>
>>
>
> --
>
> Regards,
>
> Kingsley Idehen       President & CEO OpenLink Software     Web:
> http://www.openlinksw.com
> Weblog: http://www.openlinksw.com/blog/~kidehen<http://www.openlinksw.com/blog/%7Ekidehen>
> Twitter/Identi.ca: kidehen
>
>
>
>
>
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