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From "Anshum Gupta (JIRA)" <>
Subject [jira] [Commented] (SOLR-7275) Pluggable authorization module in Solr
Date Fri, 01 May 2015 20:32:07 GMT


Anshum Gupta commented on SOLR-7275:

Thanks for that input Don and Ishan, I read up a bit more and it certainly now makes more
sense to use 403 for authorization and 401 for authentication. I'm changing things a bit to
have the SolrAuthrorizationReponse contain an int HttpStatus code and Solr would just return
that back if it's not an SC_OK or SC_ACCEPTED. That would allow the authorization plugin to
act independently and decide what to return. I'll just put up the patch with that update in
a bit.

> Pluggable authorization module in Solr
> --------------------------------------
>                 Key: SOLR-7275
>                 URL:
>             Project: Solr
>          Issue Type: Sub-task
>            Reporter: Anshum Gupta
>            Assignee: Anshum Gupta
>         Attachments: SOLR-7275.patch, SOLR-7275.patch, SOLR-7275.patch
> Solr needs an interface that makes it easy for different authorization systems to be
plugged into it. Here's what I plan on doing:
> Define an interface {{SolrAuthorizationPlugin}} with one single method {{isAuthorized}}.
This would take in a {{SolrRequestContext}} object and return an {{SolrAuthorizationResponse}}
object. The object as of now would only contain a single boolean value but in the future could
contain more information e.g. ACL for document filtering etc.
> The reason why we need a context object is so that the plugin doesn't need to understand
Solr's capabilities e.g. how to extract the name of the collection or other information from
the incoming request as there are multiple ways to specify the target collection for a request.
Similarly request type can be specified by {{qt}} or {{/handler_name}}.
> Flow:
> Request -> SolrDispatchFilter -> isAuthorized(context) -> Process/Return.
> {code}
> public interface SolrAuthorizationPlugin {
>   public SolrAuthorizationResponse isAuthorized(SolrRequestContext context);
> }
> {code}
> {code}
> public  class SolrRequestContext {
>   UserInfo; // Will contain user context from the authentication layer.
>   HTTPRequest request;
>   Enum OperationType; // Correlated with user roles.
>   String[] CollectionsAccessed;
>   String[] FieldsAccessed;
>   String Resource;
> }
> {code}
> {code}
> public class SolrAuthorizationResponse {
>   boolean authorized;
>   public boolean isAuthorized();
> }
> {code}
> User Roles: 
> * Admin
> * Collection Level:
>   * Query
>   * Update
>   * Admin
> Using this framework, an implementation could be written for specific security systems
e.g. Apache Ranger or Sentry. It would keep all the security system specific code out of Solr.

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