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From "Erik Hatcher (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-3161) Use of 'qt' should be restricted to searching and should not start with a '/'
Date Mon, 27 Feb 2012 14:14:48 GMT

    [ https://issues.apache.org/jira/browse/SOLR-3161?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13217199#comment-13217199
] 

Erik Hatcher commented on SOLR-3161:
------------------------------------

bq. However, I can't see how forcing people into a path-only style of selecting RH configs
is a benefit. The ability to stay at /select and switch between various named RHs through
a simple request param is a strength in my experience.

I've thought this way too, because it does make it convenient to just use /select for everything.
 However, for filtering and security of requests, path-based is much better.  I'm of the opinion
that if we have qt, it should not be restricted, but even better is to do away with qt and
let request handlers define request paths.  Ultimately I'd like to see Solr's request handling
be much simpler and cleaner, less "magic".
                
> Use of 'qt' should be restricted to searching and should not start with a '/'
> -----------------------------------------------------------------------------
>
>                 Key: SOLR-3161
>                 URL: https://issues.apache.org/jira/browse/SOLR-3161
>             Project: Solr
>          Issue Type: Improvement
>          Components: search, web gui
>            Reporter: David Smiley
>            Assignee: David Smiley
>             Fix For: 3.6, 4.0
>
>
> I haven't yet looked at the code involved for suggestions here; I'm speaking based on
how I think things should work and not work, based on intuitiveness and security. In general
I feel it is best practice to use '/' leading request handler names and not use "qt", but
I don't hate it enough when used in limited (search-only) circumstances to propose its demise.
But if someone proposes its deprecation that then I am +1 for that.
> Here is my proposal:
> Solr should error if the parameter "qt" is supplied with a leading '/'. (trunk only)
> Solr should only honor "qt" if the target request handler extends solr.SearchHandler.
> The new admin UI should only use 'qt' when it has to. For the query screen, it could
present a little pop-up menu of handlers to choose from, including "/select?qt=mycustom" for
handlers that aren't named with a leading '/'. This choice should be positioned at the top.
> And before I forget, me or someone should investigate if there are any similar security
problems with the shards.qt parameter. Perhaps shards.qt can abide by the same rules outlined
above.
> Does anyone foresee any problems with this proposal?
> On a related subject, I think the notion of a default request handler is bad - the default="true"
thing. Honestly I'm not sure what it does, since I noticed Solr trunk redirects '/solr/' to
the new admin UI at '/solr/#/'. Assuming it doesn't do anything useful anymore, I think it
would be clearer to use <requestHandler name="/select" class="solr.SearchHandler"> instead
of what's there now. The delta is to put the leading '/' on this request handler name, and
remove the "default" attribute.

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