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https://issues.apache.org/jira/browse/SOLR-10814?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16118434#comment-16118434
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Hrishikesh Gadre commented on SOLR-10814:
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[~noble.paul]
bq. Tell me , how will the new plugin implementation know whether to use a
short name or a long name?
We will just use the short name all the time (and ignore the long name).
Obviously this means that the plugin can only work for Solr releases which
contain this fix. But I think that is ok.
> Solr RuleBasedAuthorization config doesn't work seamlessly with kerberos
> authentication
> ---------------------------------------------------------------------------------------
>
> Key: SOLR-10814
> URL: https://issues.apache.org/jira/browse/SOLR-10814
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Affects Versions: 6.2
> Reporter: Hrishikesh Gadre
>
> Solr allows configuring roles to control user access to the system. This is
> accomplished through rule-based permission definitions which are assigned to
> users.
> The authorization framework in Solr passes the information about the request
> (to be authorized) using an instance of AuthorizationContext class. Currently
> the only way to extract authenticated user is via getUserPrincipal() method
> which returns an instance of java.security.Principal class. The
> RuleBasedAuthorizationPlugin implementation invokes getName() method on the
> Principal instance to fetch the list of associated roles.
> https://github.com/apache/lucene-solr/blob/2271e73e763b17f971731f6f69d6ffe46c40b944/solr/core/src/java/org/apache/solr/security/RuleBasedAuthorizationPlugin.java#L156
> In case of basic authentication mechanism, the principal is the userName.
> Hence it works fine. But in case of kerberos authentication, the user
> principal also contains the RELM information e.g. instead of foo, it would
> return f...@example.com. This means if the user changes the authentication
> mechanism, he would also need to change the user-role mapping in
> authorization section to use f...@example.com instead of foo. This is not
> good from usability perspective.
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