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From "Yip Ng (JIRA)" <derby-...@db.apache.org>
Subject [jira] Commented: (DERBY-1330) Provide runtime privilege checking for grant/revoke functionality
Date Thu, 24 Aug 2006 23:38:49 GMT
    [ http://issues.apache.org/jira/browse/DERBY-1330?page=comments#action_12430325 ] 
            
Yip Ng commented on DERBY-1330:
-------------------------------

Mamta, one can reproduce this by reading the entries from SYSDEPENDS that has a row that have
a tableperms as its provider id.  For example, via getPersistentProviderInfos() of the dependency
manager.  This will eventually call the getTablePermissions(UUID) from DDdependableFinder
object, which will lead to the NPE I described above.  All the getXXXPermissions(UUID) methods
also have the same problem.





> Provide runtime privilege checking for grant/revoke functionality
> -----------------------------------------------------------------
>
>                 Key: DERBY-1330
>                 URL: http://issues.apache.org/jira/browse/DERBY-1330
>             Project: Derby
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 10.2.1.0
>            Reporter: Mamta A. Satoor
>         Assigned To: Mamta A. Satoor
>             Fix For: 10.2.1.0
>
>         Attachments: AuthorizationModelForDerbySQLStandardAuthorization.html, AuthorizationModelForDerbySQLStandardAuthorizationV2.html,
DERBY1330javaDocWarningsDiffV9.txt, DERBY1330javaDocWarningsStatV9.txt, Derby1330MinorCleanupV7diff.txt,
Derby1330MinorCleanupV7stat.txt, Derby1330PrivilegeCollectionV2diff.txt, Derby1330PrivilegeCollectionV2stat.txt,
Derby1330PrivilegeCollectionV3diff.txt, Derby1330PrivilegeCollectionV3stat.txt, Derby1330setUUIDinDataDictionaryV10diff.txt,
Derby1330setUUIDinDataDictionaryV10stat.txt, Derby1330setUUIDinDataDictionaryV8diff.txt, Derby1330setUUIDinDataDictionaryV8stat.txt,
Derby1330uuidIndexForPermsSystemTablesV4diff.txt, Derby1330uuidIndexForPermsSystemTablesV4stat.txt,
Derby1330uuidIndexForPermsSystemTablesV5diff.txt, Derby1330uuidIndexForPermsSystemTablesV5stat.txt,
Derby1330uuidIndexForPermsSystemTablesV6diff.txt, Derby1330uuidIndexForPermsSystemTablesV6stat.txt,
Derby1330ViewPrivilegeCollectionV1diff.txt, Derby1330ViewPrivilegeCollectionV1stat.txt
>
>
> Additional work needs to be done for grant/revoke to make sure that only users with required
privileges can access various database objects. In order to do that, first we need to collect
the privilege requirements for various database objects and store them in SYS.SYSREQUIREDPERM.
Once we have this information then when a user tries to access an object, the required SYS.SYSREQUIREDPERM
privileges for the object will be checked against the user privileges in SYS.SYSTABLEPERMS,
SYS.SYSCOLPERMS and SYS.SYSROUTINEPERMS. The database object access will succeed only if the
user has the necessary privileges.
> SYS.SYSTABLEPERMS, SYS.SYSCOLPERMS and SYS.SYSROUTINEPERMS are already populated by Satheesh's
work on DERBY-464. But SYS.SYSREQUIREDPERM doesn't have any information in it at this point
and hence no runtime privilege checking is getting done at this point.

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