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https://issues.apache.org/jira/browse/SOLR-10814?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16037127#comment-16037127
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Hrishikesh Gadre commented on SOLR-10814:
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Upon investigation, I found that we can utilize getRemoteUser() method in
HttpServletRequest class to fetch the name of the authenticated user.
http://docs.oracle.com/javaee/6/api/javax/servlet/http/HttpServletRequest.html#getRemoteUser()
Currently Hadoop authentication framework returns appropriate information for
this method. So we should add an API in AuthorizationContext class to return
this information as well (along with relevant changes in
RuleBasedAuthorizationPlugin).
> 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 changed 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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