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From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-4874) Possible authorizaton handling impovements
Date Wed, 31 Oct 2012 18:26:12 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-4874?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13488052#comment-13488052
] 

Aleksey Yeschenko commented on CASSANDRA-4874:
----------------------------------------------

{quote}
bq.DELETE: P.DELETE in CQL2 and Thrift vs. P.UPDATE in CQL3

Seems obvious.
{quote}

Not to me. Should be P.DELETE in Thrift and CQL3? If so, then what do you think about requiring
both P.UPDATE and P.DELETE for inserts/updates with TTL set?

{quote}
bq. We should move it to one place. SomeClassWithABetterName.authorize

I'm not sure this really improves things, you've just created an abstraction layer with different
names but fundamentally you still have to insert the correct auth call in each query processing
path.
{quote}

You are right. This won't be needed once we fix permission inheritance. Then one method in
ClientState (modified current hasAccees) will be sufficient. No need for another enum.

[~jbellis] Can you look at CASSANDRA-4875 as well please?
                
> Possible authorizaton handling impovements
> ------------------------------------------
>
>                 Key: CASSANDRA-4874
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4874
>             Project: Cassandra
>          Issue Type: Improvement
>    Affects Versions: 1.1.6, 1.2.0 beta 1
>            Reporter: Aleksey Yeschenko
>            Assignee: Aleksey Yeschenko
>              Labels: security
>
> I'll create another issue with my suggestions about fixing/improving IAuthority interfaces.
This one lists possible improvements that aren't related to grant/revoke methods.
> Inconsistencies:
> - CREATE COLUMNFAMILY: P.CREATE on the KS in CQL2 vs. P.CREATE on the CF in CQL3 and
Thrift
> - BATCH: P.UPDATE or P.DELETE on CF in CQL2 vs. P.UPDATE in CQL3 and Thrift (despite
remove* in Thrift asking for P.DELETE)
> - DELETE: P.DELETE in CQL2 and Thrift vs. P.UPDATE in CQL3
> - DROP INDEX: no checks in CQL2 vs. P.ALTER on the CF in CQL3
> Other issues/suggestions
> - CQL2 DROP INDEX should require authorization
> - current permission checks are inconsistent since they are performed separately by CQL2
query processor, Thrift CassandraServer and CQL3 statement classes.
> We should move it to one place. SomeClassWithABetterName.authorize(Operation, KS, CF,
User), where operation would be a enum
> (ALTER_KEYSPACE, ALTER_TABLE, CREATE_TABLE, CREATE, USE, UPDATE etc.), CF should be nullable.
> - we don't respect the hierarchy when checking for permissions, or, to be more specific,
we are doing it wrong. take  CQL3 INSERT as an example:
> we require P.UPDATE on the CF or FULL_ACCESS on either KS or CF. However, having P.UPDATE
on the KS won't allow you to perform the statement, only FULL_ACCESS will do.
> I doubt this was intentional, and if it was, I say it's wrong. P.UPDATE on the KS should
allow you to do updates on KS's cfs.
> Examples in http://www.datastax.com/dev/blog/dynamic-permission-allocation-in-cassandra-1-1
point to it being a bug, since REVOKE UPDATE ON ks FROM omega is there.
> - currently we lack a way to set permission on cassandra/keyspaces resource. I think
we should be able to do it. See the following point on why.
> - currently to create a keyspace you must have a P.CREATE permission on that keyspace
THAT DOESN'T EVEN EXIST YET. So only a superuser can create a keyspace,
> or a superuser must first grant you a permission to create it. Which doesn't look right
to me. P.CREATE on cassandra/keyspaces should allow you to create new
> keyspaces without an explicit permission for each of them.
> - same goes for CREATE TABLE. you need P.CREATE on that not-yet-existing CF of FULL_ACCESS
on the whole KS. P.CREATE on the KS won't do. this is wrong.
> - since permissions don't map directly to statements, we should describe clearly in the
documentation what permissions are required by what cql statement/thrift method.
> Full list of current permission requirements: https://gist.github.com/3978182

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