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From "Steve Rowe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-5287) Allow at least solrconfig.xml and schema.xml to be edited via the admin screen
Date Mon, 02 Dec 2013 15:07:41 GMT

    [ https://issues.apache.org/jira/browse/SOLR-5287?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13836586#comment-13836586
] 

Steve Rowe commented on SOLR-5287:
----------------------------------

{quote}
bq. BTW, I take it this doesn't apply to the REST API for manipulating the schema?
It should not apply, because this does not support uploading arbitrary files or modifying
plain XML that can get exploited with xinclude/external entities. The schema modification
APIs hopefully only allow "semantic changes" to the schema, but does not allow to upload XML
snippets to be included in those files without checks. I think Steve Rowe can comment on this,
thanks for the pointer!
{quote}

At present, only JSON is supported in the Schema REST API methods that accept PUT or POST
requests, so xinclude/external entities aren't possible.  External files can be pointed to,
though, for classes that use them, e.g. analysis components.

> Allow at least solrconfig.xml and schema.xml to be edited via the admin screen
> ------------------------------------------------------------------------------
>
>                 Key: SOLR-5287
>                 URL: https://issues.apache.org/jira/browse/SOLR-5287
>             Project: Solr
>          Issue Type: Improvement
>          Components: Schema and Analysis, web gui
>    Affects Versions: 4.5, 5.0
>            Reporter: Erick Erickson
>            Assignee: Erick Erickson
>            Priority: Blocker
>             Fix For: 5.0, 4.7
>
>         Attachments: SOLR-5287.patch, SOLR-5287.patch, SOLR-5287.patch, SOLR-5287.patch,
SOLR-5287.patch
>
>
> A user asking a question on the Solr list got me to thinking about editing the main config
files from the Solr admin screen. I chatted briefly with [~steffkes] about the mechanics of
this on the browser side, he doesn't see a problem on that end. His comment is there's no
end point that'll write the file back.
> Am I missing something here or is this actually not a hard problem? I see a couple of
issues off the bat, neither of which seem troublesome.
> 1> file permissions. I'd imagine lots of installations will get file permission exceptions
if Solr tries to write the file out. Well, do a chmod/chown.
> 2> screwing up the system maliciously or not. I don't think this is an issue, this
would be part of the admin handler after all.
> Does anyone have objections to the idea? And how does this fit into the work that [~sarowe@syr.edu]
has been doing?
> I can imagine this extending to SolrCloud with a "push this to ZK" option or something
like that, perhaps not in V1 unless it's easy.....
> Of course any pointers gratefully received. Especially ones that start with "Don't waste
your effort, it'll never work (or be accepted)"...
> Because what scares me is this seems like such an easy thing to do that would be a significant
ease-of-use improvement, so there _has_ to be something I'm missing.
> So if we go forward with this we'll make this the umbrella JIRA, the two immediate sub-JIRAs
that spring to mind will be the UI work and the endpoints for the UI work to use.
> I think there are only two end-points here
> 1> list all the files in the conf (or arbitrary from <solr_home>/collection)
directory.
> 2> write this text to this file
> Possibly later we could add "clone the configs from coreX to coreY".
> BTW, I've assigned this to myself so I don't lose it, but if anyone wants to take it
over it won't hurt my feelings a bit....



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