Douglas,
Managing a per-user-group whitelist of fields outside of Solr seems the
best approach. When the query comes in you can then filter out any fields
not contained in the whitelist before you send the request to Solr. The
easy part will be to do that on URL parameters like fl. Depending on how
your app generates the actual query string, you may want to also scan that
for fielded query clauses (eg "badfield:value") and localParams (eg
"{!dismax qf=badfield}value").
Secondly, you can map internal Solr fields to aliases using this syntax in
the fl parameter: "display_name:real_solr_name". So when the request comes
in from your app, first you'll map from the requested field alias names to
internal Solr names (while enforcing the whitelist), and then in the fl
parameter supply the aliases you want sent in the response.
k/r,
Scott
On Wed, Oct 28, 2015 at 6:58 PM, Douglas McGilvray <d...@weemondo.com> wrote:
> Hi all,
>
> First I’d like to say the nested facets and the json facet api in
> particular have made my world much better, I thank everyone involved, you
> are all awesome.
>
> In my implementation has much of the solr query building working on the
> browser, solr is behind a php server which acts as “proxy” and doorman,
> filtering at the document level according to user role and supplying some
> sensible maximums …
>
> However we now wish to filter just one or two potentially sensitive fields
> in one document type according to user role (as determined in the php
> proxy). Duplicating documents (or cores) seems like overkill for just two
> fields in one document type .. I wondered if it would be feasible (in the
> interests of preventing malicious activity) to filter the query itself
> whether it be parameters (fl, facet.fields, terms, etc) … or even deny any
> request in which fieldname occurs …
>
> Is there someway someone might obscure a fieldname in a request?
>
> Kind Regards & thanks in davacne,
> Douglas
--
Scott Stults | Founder & Solutions Architect | OpenSource Connections, LLC
| 434.409.2780
http://www.opensourceconnections.com
