Re: [Virtuoso-users] client javascript

[Kingsley Idehen]

On 7/6/17 1:31 PM, Carlo Capelli wrote:
> Hi Kingsley
>
> Thanks for your answer, sorry for the late reply...
>
> From the (verbose and very sparse!) information I've collected so far,
> seems I have to send my credentials to perform basic authentication
> with the server.
>
> So, inspecting - with help from the browser developer tools - the
> default interface protocol (the HTTP form with the fields
> httpd_password,httpd_username, presented upfront the URL request,
> let's say https://www.example.com/sparql),
> I've managed to issue a correct call - using php curl, where I can
> trust better the transmission.
> Alas, the return payload value is encrypted... still more problems,
> and low level details to 'guess'...
>
> This seems way too complicated for such a simple use case.
> I wonder what could be the reason to keep the details of the client so
> difficult to find.
> Isn't authenticated access via HTTPS almost a necessity these days?

Hi Carlo,

To cut a long story short, if you want to use TLS to authenticate you
need to use WebID+TLS+Delegation protocol. You can also use Digest
Authentication via /sparql-auth endpoint.

The only requirement is CORs enabling the SPARQL endpoint.

[1] https://enable-cors.org/server_virtuoso.html
[2]
http://vos.openlinksw.com/owiki/wiki/VOS/VirtTipsAndTricksCORsEnableSPARQLURLs
[3] http://vos.openlinksw.com/owiki/wiki/VOS/VirtTipsAndTricksGuideCORSSetup

Kingsley
>
> 2017-07-03 15:41 GMT+02:00 Kingsley Idehen  >:
>
> On 7/3/17 5:16 AM, Carlo Capelli wrote:
>> Hi All
>>
>> I had no luck searching for a javascript client with capability
>> to connect to a secured endpoint,
>> and nobody could help me on stackoverflow (
>> https://stackoverflow.com/q/44871467/874024
>>  ).
>>
>> Is there some open source code sample I could start from ?
>> If I will solve this, my plan is to contribute to this client (
>> https://www.npmjs.com/package/virtuoso-sparql-client
>>  )
>>
>> Best regards, Carlo
>
> CORs-enable your endpoint.
>
>
> Now the endpoint is CORS enabled. But it didn't solved my problem.
>
>
> DBpedia's endpoint (a Virtuoso instance) is CORs enabled, thus you
> should verify you work against that.
>
>
> Not sure I follow, I'm using a module (virtuoso-sparql-client
> ) that for sure
> allows to fetch public data from dbpedia...
>
> Best regards, Carlo
>
>
> Kingsley
>>
>>
>>
>> 
>> --
>> Check out the vibrant tech community on one of the world's most
>> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
>>
>>
>> ___
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>> Virtuoso-users@lists.sourceforge.net
>> 
>> https://lists.sourceforge.net/lists/listinfo/virtuoso-users
>> 
>
>
> -- 
> Regards,
>
> Kingsley Idehen 
> Founder & CEO 
> OpenLink Software   (Home Page: http://www.openlinksw.com)
>
> Weblogs (Blogs):
> Legacy Blog: http://www.openlinksw.com/blog/~kidehen/
> 
> Blogspot Blog: http://kidehen.blogspot.com
> Medium Blog: https://medium.com/@kidehen
>
> Profile Pages:
> Pinterest: https://www.pinterest.com/kidehen/
> 
> Quora: https://www.quora.com/profile/Kingsley-Uyi-Idehen
> 
> Twitter: https://twitter.com/kidehen
> Google+: https://plus.google.com/+KingsleyIdehen/about
> 
> LinkedIn: http://www.linkedin.com/in/kidehen
> 
>
> Web Identities (WebID):
> Personal: http://kingsley.idehen.net/public_home/kidehen/profile.ttl#i
> 
> : 
> http://id.myopenlink.net/DAV/home/KingsleyUyiIdehen/Public/kingsley.ttl#this
> 
> 
>
>
> 
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
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> 
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> 
>
>
>
>
> 

Re: [Virtuoso-users] client javascript

[Carlo Capelli]

Hi Kingsley

Thanks for your answer, sorry for the late reply...

>From the (verbose and very sparse!) information I've collected so far,
seems I have to send my credentials to perform basic authentication with
the server.

So, inspecting - with help from the browser developer tools - the default
interface protocol (the HTTP form with the fields
httpd_password,httpd_username, presented upfront the URL request, let's say
https://www.example.com/sparql),
I've managed to issue a correct call - using php curl, where I can trust
better the transmission.
Alas, the return payload value is encrypted... still more problems, and low
level details to 'guess'...

This seems way too complicated for such a simple use case.
I wonder what could be the reason to keep the details of the client so
difficult to find.
Isn't authenticated access via HTTPS almost a necessity these days?

2017-07-03 15:41 GMT+02:00 Kingsley Idehen :

> On 7/3/17 5:16 AM, Carlo Capelli wrote:
>
> Hi All
>
> I had no luck searching for a javascript client with capability to connect
> to a secured endpoint,
> and nobody could help me on stackoverflow ( https://stackoverflow.com/q/
> 44871467/874024 ).
>
> Is there some open source code sample I could start from ?
> If I will solve this, my plan is to contribute to this client (
> https://www.npmjs.com/package/virtuoso-sparql-client )
>
> Best regards, Carlo
>
>
> CORs-enable your endpoint.
>

Now the endpoint is CORS enabled. But it didn't solved my problem.


> DBpedia's endpoint (a Virtuoso instance) is CORs enabled, thus you should
> verify you work against that.
>

Not sure I follow, I'm using a module (virtuoso-sparql-client
) that for sure
allows to fetch public data from dbpedia...

Best regards, Carlo


> Kingsley
>
>
>
>
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
>
>
>
> ___
> Virtuoso-users mailing 
> listVirtuoso-users@lists.sourceforge.nethttps://lists.sourceforge.net/lists/listinfo/virtuoso-users
>
>
> --
> Regards,
>
> Kingsley Idehen   
> Founder & CEO
> OpenLink Software   (Home Page: http://www.openlinksw.com)
>
> Weblogs (Blogs):
> Legacy Blog: http://www.openlinksw.com/blog/~kidehen/
> Blogspot Blog: http://kidehen.blogspot.com
> Medium Blog: https://medium.com/@kidehen
>
> Profile Pages:
> Pinterest: https://www.pinterest.com/kidehen/
> Quora: https://www.quora.com/profile/Kingsley-Uyi-Idehen
> Twitter: https://twitter.com/kidehen
> Google+: https://plus.google.com/+KingsleyIdehen/about
> LinkedIn: http://www.linkedin.com/in/kidehen
>
> Web Identities (WebID):
> Personal: http://kingsley.idehen.net/public_home/kidehen/profile.ttl#i
> : 
> http://id.myopenlink.net/DAV/home/KingsleyUyiIdehen/Public/kingsley.ttl#this
>
>
> 
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> ___
> Virtuoso-users mailing list
> Virtuoso-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/virtuoso-users
>
>
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Re: [Virtuoso-users] client javascript

[Kingsley Idehen]

On 7/3/17 5:16 AM, Carlo Capelli wrote:
> Hi All
>
> I had no luck searching for a javascript client with capability to
> connect to a secured endpoint,
> and nobody could help me on stackoverflow (
> https://stackoverflow.com/q/44871467/874024 ).
>
> Is there some open source code sample I could start from ?
> If I will solve this, my plan is to contribute to this client (
> https://www.npmjs.com/package/virtuoso-sparql-client )
>
> Best regards, Carlo

CORs-enable your endpoint.

DBpedia's endpoint (a Virtuoso instance) is CORs enabled, thus you
should verify you work against that.

Kingsley
>
>
>
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
>
>
> ___
> Virtuoso-users mailing list
> Virtuoso-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/virtuoso-users


-- 
Regards,

Kingsley Idehen   
Founder & CEO 
OpenLink Software   (Home Page: http://www.openlinksw.com)

Weblogs (Blogs):
Legacy Blog: http://www.openlinksw.com/blog/~kidehen/
Blogspot Blog: http://kidehen.blogspot.com
Medium Blog: https://medium.com/@kidehen

Profile Pages:
Pinterest: https://www.pinterest.com/kidehen/
Quora: https://www.quora.com/profile/Kingsley-Uyi-Idehen
Twitter: https://twitter.com/kidehen
Google+: https://plus.google.com/+KingsleyIdehen/about
LinkedIn: http://www.linkedin.com/in/kidehen

Web Identities (WebID):
Personal: http://kingsley.idehen.net/public_home/kidehen/profile.ttl#i
: 
http://id.myopenlink.net/DAV/home/KingsleyUyiIdehen/Public/kingsley.ttl#this



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[Virtuoso-users] client javascript

[Carlo Capelli]

Hi All

I had no luck searching for a javascript client with capability to connect
to a secured endpoint,
and nobody could help me on stackoverflow (
https://stackoverflow.com/q/44871467/874024 ).

Is there some open source code sample I could start from ?
If I will solve this, my plan is to contribute to this client (
https://www.npmjs.com/package/virtuoso-sparql-client )

Best regards, Carlo
--
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot___
Virtuoso-users mailing list
Virtuoso-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/virtuoso-users