Hi Rumi,
I looked at the source code of libsrc/Wi/sparql_io.sql for procedure WS.WS
."/!sparql/":
create procedure WS.WS."/!sparql/" (inout path varchar, inout params any,
inout lines any)
I am not sure whether the user as "SPARQL" for /sparql endpoint are set by
default here:
user_id := connection_get ('SPARQLUserId', 'SPARQL');
set_user_id (user_id, 1);
I have tried to grant SPARQL_UPDATE to user "SPARQL", then the /sparql
endpoint is not read-only....
And when I tried to grant another role, I got
The object "SPARQL_LOAD_SERVICE_DATA" does not exist.
But it does not allow me to expose /sparql endpoint using vsp_user
"SPARQL". What I am really interested in is how to expose sparql endpoint
using vsp users other than dba.
Best,
Gang
On Tue, Feb 3, 2015 at 8:10 AM, Rumi <rtsek...@openlinksw.com> wrote:
> Hi Gang Fu,
>
> On 03-Feb-15 1:15 PM, Gang Fu wrote:
>
> Hi,
>
> I am using function vhost_define() to expose read-only sparql endpoint
> through another port (different from 8890) for security concern.
>
> I have two questions:
> 1) how can I expose a sparql endpoint using account other than 'dba'. I
> have tried to using vsp_user=>'SPARQL', but I got '404 cannot access' error
> when I tried the url. I also set the opts->(executable, 'yes'), this option
> seems to allow any vsp user to have execute permission, but it still does
> not work. I also tried to set user 'SPARQL' to administrator role, but
> still cannot work....
>
>
> Please try the steps from this guide: "Secure SPARQL Endpoint via SQL
> Accounts -- usage path digest authentication"
>
> Link:
> http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VirtSPARQLProtectSQLDigestAuthentication
>
> Related:
> -- Securing SPARQL endpoints:
> http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VirtTipsAndTricksGuideSPARQLEndpoints
> -- Securing your SPARQL Endpoint via OAuth:
> http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtOAuthSPARQL
> -- Securing your SPARQL Endpoint via WebID:
> http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtSPARQLSecurityWebID
>
>
> 2) how can I know and configure the user account to use '/sparql'
> endpoint by default. The system table 'DB.DBA.HTTP_PATH' only shows that
> the vsp_user is 'dba', but it does not show the default user of that
> endpoint is 'SPARLQ' (ID=106). The documentation says the user is 'SPARLQ'
> for both '/sparql' and '/sparql-graph-crud', but I cannot find any system
> table for that. Our system team wants to audit that information.
>
>
> The name 'SPARQL' is a constant in the code of SPARQL web service endpoint
> pages ( /sparql and /sparql-auth ).
> Another name can be used if authentication function sets connection
> variable 'SPARQLUserId' to that name, for ex., placing inside
> authentication call:
>
> connection_set ('SPARQLUserId', 'SOME_USER_NAME');
>
>
> What you could try is to grant more roles to the user if needed, such as:
> SPARQL_LOAD_SERVICE_DATA or SPARQL_UPDATE, by granting directly to the
> user or, better, to SPARQL_SELECT, since the endpoint page will require
> that the user is member of SPARQL_SELECT group -- that's the minimal
> practical permission, however one can grant more permissions.
>
>
> Best Regards,
> Rumi Kocis
>
>
> Best,
> Gang
>
>
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