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From "Martin Zaun (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-2109) System privileges
Date Thu, 28 Feb 2008 06:23:51 GMT

    [ https://issues.apache.org/jira/browse/DERBY-2109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12573159#action_12573159
] 

Martin Zaun commented on DERBY-2109:
------------------------------------


> Daniel John Debrunner wrote:
> 1) Since J2ME/CDC/Foundation does not support some of the security classes used, how
is this being handled? Seems like it isn't at the moment. I think a new abstract method is
needed in InternalDriver called shutdownCheck() is needed that would do nothing in J2ME but
call the checks (through SecurityUtil in J2SE.

The System Privileges checks are invoked from three places: NetworkServerControlImpl, InternalDriver,
and EmbedConnection (and there may be more in future). They all call into SecurityUtil. Instead
of introducing abstract methods in three different places, we may want to think about using
SecurityUtil as a central switch for checking/not checking SystemPrivileges.

Right now SecurityUtil is is a static utility class, which doesn't support delegation.  I
see the following options:
a) Make SecurityUtil an interface and (perhaps rename it) and have a public singleton class
providing an instance appropriate to the environment (i.e., dummy implementation for J2ME).
b) Keep SecurityUtil as class but make its method non-static, abstract and introduce a static
method getSecurityChecker() (or so) returning a singleton instance implementing these methods
according to the environment.
c) Keep SecurityUtil as utility class but have the static methods internally delegate to an
instance appropriate to the environment.

I like c) best since it keeps the callers unchanged.  Any thoughts/comments welcome.

If you have a pointer to a derby code example for me where switch implementation classes to
accommodate J2ME, that would be helpful to me too.

Thanks,
Martin


> System privileges
> -----------------
>
>                 Key: DERBY-2109
>                 URL: https://issues.apache.org/jira/browse/DERBY-2109
>             Project: Derby
>          Issue Type: New Feature
>          Components: Security
>    Affects Versions: 10.3.1.4
>            Reporter: Rick Hillegas
>            Assignee: Martin Zaun
>         Attachments: DERBY-2109-02.diff, DERBY-2109-02.stat, derby-2109-03-javadoc-see-tags.diff,
DERBY-2109-04.diff, DERBY-2109-04.stat, DERBY-2109-05and06.diff, DERBY-2109-05and06.stat,
DERBY-2109-07.diff, DERBY-2109-07.stat, DERBY-2109-08.diff, DERBY-2109-08.stat, DERBY-2109-08_addendum.diff,
DERBY-2109-08_addendum.stat, DERBY-2109-09.diff, DERBY-2109-09.stat, DERBY-2109-10.diff, DERBY-2109-10.stat,
SystemPrivilegesBehaviour.html, systemPrivs.html, systemPrivs.html, systemPrivs.html, systemPrivs.html
>
>
> Add mechanisms for controlling system-level privileges in Derby. See the related email
discussion at http://article.gmane.org/gmane.comp.apache.db.derby.devel/33151.
> The 10.2 GRANT/REVOKE work was a big step forward in making Derby more  secure in a client/server
configuration. I'd like to plug more client/server security holes in 10.3. In particular,
I'd like to focus on  authorization issues which the ANSI spec doesn't address.
> Here are the important issues which came out of the email discussion.
> Missing privileges that are above the level of a single database:
> - Create Database
> - Shutdown all databases
> - Shutdown System
> Missing privileges specific to a particular database:
> - Shutdown that Database
> - Encrypt that database
> - Upgrade database
> - Create (in that Database) Java Plugins (currently  Functions/Procedures, but someday
Aggregates and VTIs)
> Note that 10.2 gave us GRANT/REVOKE control over the following  database-specific issues,
via granting execute privilege to system  procedures:
> Jar Handling
> Backup Routines
> Admin Routines
> Import/Export
> Property Handling
> Check Table
> In addition, since 10.0, the privilege of connecting to a database has been controlled
by two properties (derby.database.fullAccessUsers and derby.database.defaultConnectionMode)
as described in the security section of the Developer's Guide (see http://db.apache.org/derby/docs/10.2/devguide/cdevcsecure865818.html).

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