Il 09/03/2015 22:02, Kingsley Idehen ha scritto:
> On 3/9/15 4:01 PM, Nicola Vitucci wrote:
>> Il 09/03/2015 20:18, Kingsley Idehen ha scritto:
>>> On 3/9/15 2:47 PM, Nicola Vitucci wrote:
>>>> Il 08/03/2015 00:30, Kingsley Idehen ha scritto:
>>>>>> On 3/7/15 2:18 PM, Nicola Vitucci wrote:
>>>>>>>> Dear all,
>>>>>>>>
>>>>>>>> I could not figure out any way to use ACLs to avoid showing private
>>>>>>>> graphs when submitting the following query:
>>>>>>>>
>>>>>>>> SELECT DISTINCT ?g WHERE {GRAPH ?g {?s ?p ?o}}
>>>>>>>>
>>>>>>>> The query should not be changed, so I was hoping to be able to
>>>>>>>> do it via
>>>>>>>> graph-level permissions and/or pragmas. Is it possible to do
>>>>>>>> this at all?
>>>>>>>>
>>>>>>>> Thanks a lot,
>>>>>>>>
>>>>>>>> Nicola
>>>>>>>>
>>>>>>>>
>>>>>> Via SQL Command Line or Conductor UI (HTML based Administrator):
>>>>>>
>>>>>> -- Add a named graph to the private (protected) graph group
>>>>>>
>>>>>> DB.DBA.RDF_GRAPH_GROUP_INS
>>>>>> ('http://www.openlinksw.com/schemas/virtrdf#PrivateGraphs','{named-graph-iri')
>>>>>>
>>>>>> ;
>>>>>>
>>>>>> -- To ensure user sql role account 'nobody' doesn't have access to
>>>>>> private graphs execute:
>>>>>>
>>>>>> DB.DBA.RDF_DEFAULT_USER_PERMS_SET ('nobody', 0, 1);
>>>>>>
>>>>>> -- To ensure that services running under user/role account 'SPARQL'
>>>>>> don't have access to private graphs (denoted using 1).
>>>>>>
>>>>>> DB.DBA.RDF_DEFAULT_USER_PERMS_SET ('SPARQL', 0, 1);
>>>>>>
>>>>>> Links:
>>>>>>
>>>>>> [1]http://docs.openlinksw.com/virtuoso/rdfgraphsecurity.html --
>>>>>> documentation section on graph level security .
>>>>>>
>>>>>>
>>>> Hi Kingsley,
>>>>
>>>> try as I might I didn't succeed. I had already tried your proposed
>>>> solution, yet the graph is still showing and RDF_GRAPH_SECURITY_AUDIT
>>>> (0) returns the following:
>>>>
>>>> ...
>>>> ERROR NULL NULL 107 SPARQL The "SPARQL" user
>>>> should be disabled. Applications should create separate accounts and
>>>> grant SPARQL_SELECT etc., the account "SPARQL" is for system purposes
>>>> only
>>>> ERROR #i8192http://.... 107 SPARQL The "SPARQL"
>>>> user has got some specific permissions. That's strange and
>>>> redundand, at
>>>> best, it may also mislead somebody
>>>>
>>>> Just to be clear, the following query correctly returns no results:
>>>>
>>>> SELECT DISTINCT * WHERE {GRAPH<http://myprivategraph> {?s ?p ?o}}
>>>> LIMIT 10
>>>>
>>>> The problem is when I want to see all the graphs like in my example.
>>>> Shouldn't the private graphs be hidden or do I misunderstand the use of
>>>> ACLs in this case?
>>>>
>>>> Thanks,
>>>>
>>>> Nicola
>>> If the acl system is configured right, and performing properly, given
>>> the named graph identified by IRI <urn:some:private:named:graph>, all
>>> queries will excluded RDF statements from the private named graph.
>>>
>>> Under what identity are you performing the query that still includes
>>> private named graphs? I assume you aren't doing that as user "dba",
>>> right? I also assume that private named graph access has been disabled
>>> for user/role "SPARQL" ?
>>>
>>>
>> I disabled the access for 'SPARQL' this way:
>> DB.DBA.RDF_GRAPH_GROUP_INS
>> ('http://www.openlinksw.com/schemas/virtrdf#PrivateGraphs',
>> 'http://my.private.graph')
>> DB.DBA.RDF_GRAPH_USER_PERMS_SET
>> ('http://www.openlinksw.com/schemas/virtrdf#PrivateGraphs', 'SPARQL', 0)
>>
>> I am running the query with this command:
>>
>> curl --data-urlencode query="SELECT DISTINCT ?g WHERE {GRAPH ?g {?s ?p
>> ?o}}" localhost:8890/sparql
>>
>> so I suppose the identity is actually SPARQL?
>
> Yes.
>
> And in this case you are seeing triples from the private named graph in
> your query solution?
>
> Kingsley
With the mentioned query I can see the graph itself:
<sparql xmlns="http://www.w3.org/2005/sparql-results#";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://www.w3.org/2001/sw/DataAccess/rf1/result2.xsd";>
<head>
<variable name="g"/>
</head>
<results distinct="false" ordered="true">
<result>
<binding
name="g"><uri>http://www.openlinksw.com/schemas/virtrdf#</uri></binding>
</result>
<result>
<binding name="g"><uri>http://www.w3.org/ns/ldp#</uri></binding>
</result>
<result>
<binding name="g"><uri>http://localhost:8890/sparql</uri></binding>
</result>
<result>
<binding name="g"><uri>http://localhost:8890/DAV/</uri></binding>
</result>
<result>
<binding name="g"><uri>http://www.w3.org/2002/07/owl#</uri></binding>
</result>
<result>
<binding name="g"><uri>http://my.private.graph</uri></binding>
</result>
</results>
</sparql>
I would expect it not to be shown. Am I correct?
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