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https://issues.apache.org/jira/browse/DERBY-3200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12624081#action_12624081
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Kim Haase commented on DERBY-3200:
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Wow, thanks, Dag, for looking at this so carefully and finding all these
improvements.
Since you created the "dbOwner" variable at the beginning, would it make sense
to replace other occurrences of "mary" in strings with this variable? I think
you used it only at the beginning. I could fix it elsewhere in the main program.
Would you like to make similar fixes to the client programs or would you rather
I did it? Many of the fixes may also apply to the other authentication examples
(the ones that don't use SQL authorization).
The changed code needs some further edits to keep the line lengths within 72
characters. Longer lines wrap badly in the PDF manuals.
> Developer's Guide: Add examples showing use of SQL authorization with user
> authentication
> -----------------------------------------------------------------------------------------
>
> Key: DERBY-3200
> URL: https://issues.apache.org/jira/browse/DERBY-3200
> Project: Derby
> Issue Type: Improvement
> Components: Documentation
> Reporter: Kim Haase
> Assignee: Kim Haase
> Priority: Minor
> Attachments: auth2.log, AuthExampleClient1.java,
> AuthExampleClient1.java, AuthExampleClient1.java, AuthExampleClient2.java,
> AuthExampleClient2.java, AuthExampleClient2.java,
> AuthExampleClientSQLAuth1.java, AuthExampleClientSQLAuth1.java,
> AuthExampleClientSQLAuth1.java, AuthExampleClientSQLAuth1.java,
> AuthExampleClientSQLAuth1.java, AuthExampleClientSQLAuth1.java,
> AuthExampleClientSQLAuth1.java, AuthExampleClientSQLAuth2.java,
> AuthExampleClientSQLAuth2.java, AuthExampleClientSQLAuth2.java,
> AuthExampleClientSQLAuth2.java, AuthExampleClientSQLAuth2.java,
> AuthExampleClientSQLAuth2.java, AuthExampleClientSQLAuth2.java,
> AuthExampleEmbedded-dhw.java, AuthExampleEmbedded.java,
> AuthExampleEmbedded.java, AuthExampleEmbedded.java,
> AuthExampleEmbedded_dhw.java, AuthExampleEmbeddedSQLAuth.java,
> AuthExampleEmbeddedSQLAuth.java, AuthExampleEmbeddedSQLAuth.java,
> AuthExampleEmbeddedSQLAuth.java, AuthExampleEmbeddedSQLAuth.java,
> AuthExampleEmbeddedSQLAuth.java.dhw, DERBY-3200-2.diff, DERBY-3200-2.zip,
> DERBY-3200-3.diff, DERBY-3200-3.zip, DERBY-3200-4.diff, DERBY-3200-4.zip,
> DERBY-3200-5.diff, DERBY-3200-5.zip, DERBY-3200.diff, DERBY-3200.stat,
> DERBY-3200.zip, rdevcsecuresqlauthembeddedex.dita, sqlauthclient.txt,
> sqlauthclientshutdown.txt, sqlauthembedded.txt, sqlauthembedded.txt
>
>
> This is the followup to DERBY-1823 that Francois Orsini suggested.
> I've been experimenting and reading the Developer's Guide section on SQL
> authorization (User authorizations, cdevcsecure36595).
> It appears that the only use of SQL authorization mode is to restrict user
> access, not to expand it.
> For example, if you set the default connection mode to noAccess, a user with
> fullAccess can't grant any privileges to a user with noAccess. And presumably
> if the default connection mode is readOnlyAccess, a user with fullAccess
> can't grant any privileges beyond SELECT, which the user has anyway.
> Only if the default connection mode is fullAccess is SQL authorization mode
> meaningful. That means that a fullAccess user can use GRANT to restrict
> another user's privileges on a particular database that the user owns.
> I'm running into a problem at the end, though. At the beginning of the
> program, as nobody in particular, I was able to create several users, some of
> them with full access. But at the end of the program, it seems that even a
> user with full access isn't allowed to turn off those database properties:
> Message: User 'MARY' does not have execute permission on PROCEDURE
> 'SYSCS_UTIL'.'SYSCS_SET_DATABASE_PROPERTY'.
> This seems a bit extreme. I know that with SQL authorization on, "the ability
> to read from or write to database objects is further restricted to the owner
> of the database objects." But the ability to execute built-in system
> procedures? Can I log in as SYSCS_UTIL? How?
> I realize that having access to SYSCS_SET_DATABASE_PROPERTY would allow me to
> in effect delete myself -- but that's essentially what I do at the end of the
> program that sets derby.connection.requireAuthentication but not
> derby.database.sqlAuthorization.
> The documentation does say that once you have turned on SQL authorization,
> you can't turn it off. But it doesn't say that you can't turn anything else
> off, either!
> I'll attach the program I've been using. Most of the stacktraces are
> expected, but I'm stumped by that last one.
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