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From "Erik Hatcher (JIRA)" <>
Subject [jira] [Commented] (SOLR-1895) ManifoldCF SearchComponent plugin for enforcing ManifoldCF security at search time
Date Wed, 21 Sep 2011 01:11:09 GMT


Erik Hatcher commented on SOLR-1895:

bq. Any reason this can't just be a custom QParserPlugin?

ummm, duh!  yes, that's the way to do it, IMO.  I should have thought of that right off the
bat, but I got blinded by the existing patch and was just keying off how it was implemented
as a SearchComponent.  

bq. Are there any conceivable cases where there might be a filter query in place already?
In those cases is there facility for handling more than one filter query parser at a time?

I don't understand... any number of filter queries can be specified, each using their own
unique query parser, taking their own (local) parameters as necessary, or leveraging global
ones if that makes sense, or using globals that are overridden by locals.

So I think this boils down to MCF having a custom query parser in it's codebase (yes, it'll
have to depend on Solr, but it already does in terms of being able to index into Solr).

And, there is already a mechanism to bake that type of filtering into any request handler
so the client isn't necessarily responsible for setting it - using the an "appends" section
in the request handler definition to specify something like this:

       <lst name="appends">
         <str name="fq">{!mcf_security ... [optional local params]}[... optional "q"

Any holes in doing it this way?  Seems the cleanest/slickest way to me currently.

> ManifoldCF SearchComponent plugin for enforcing ManifoldCF security at search time
> ----------------------------------------------------------------------------------
>                 Key: SOLR-1895
>                 URL:
>             Project: Solr
>          Issue Type: New Feature
>          Components: SearchComponents - other
>            Reporter: Karl Wright
>              Labels: document, security, solr
>             Fix For: 3.5, 4.0
>         Attachments:,,,, SOLR-1895-service-plugin.patch, SOLR-1895-service-plugin.patch, SOLR-1895.patch,
SOLR-1895.patch, SOLR-1895.patch, SOLR-1895.patch, SOLR-1895.patch, SOLR-1895.patch
> I've written an LCF SearchComponent which filters returned results based on access tokens
provided by LCF's authority service.  The component requires you to configure the appropriate
authority service URL base, e.g.:
>   <!-- LCF document security enforcement component -->
>   <searchComponent name="lcfSecurity" class="LCFSecurityFilter">
>     <str name="AuthorityServiceBaseURL">http://localhost:8080/lcf-authority-service</str>
>   </searchComponent>
> Also required are the following schema.xml additions:
>    <!-- Security fields -->
>    <field name="allow_token_document" type="string" indexed="true" stored="false"
>    <field name="deny_token_document" type="string" indexed="true" stored="false" multiValued="true"/>
>    <field name="allow_token_share" type="string" indexed="true" stored="false" multiValued="true"/>
>    <field name="deny_token_share" type="string" indexed="true" stored="false" multiValued="true"/>
> Finally, to tie it into the standard request handler, it seems to need to run last:
>   <requestHandler name="standard" class="solr.SearchHandler" default="true">
>     <arr name="last-components">
>       <str>lcfSecurity</str>
>     </arr>
> ...
> I have not set a package for this code.  Nor have I been able to get it reviewed by someone
as conversant with Solr as I would prefer.  It is my hope, however, that this module will
become part of the standard Solr 1.5 suite of search components, since that would tie it in
with LCF nicely.

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