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https://issues.apache.org/jira/browse/SOLR-8873?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15225253#comment-15225253
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Yago Riveiro commented on SOLR-8873:
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Restrict choices without any evidence of issues is halfway to people start
questioning (like me) why the enforcing was done.
> Enforce dataDir/instanceDir/ulogDir to be paths that contain only a
> controlled subset of characters
> ---------------------------------------------------------------------------------------------------
>
> Key: SOLR-8873
> URL: https://issues.apache.org/jira/browse/SOLR-8873
> Project: Solr
> Issue Type: Improvement
> Reporter: Tomás Fernández Löbbe
> Attachments: SOLR-8873.patch
>
>
> We currently support any valid path for dataDir/instanceDir/ulogDir. I think
> we should prevent special characters and restrict to a subset that is
> commonly used and tested.
> My initial proposals it to allow the Java pattern:
> {code:java}"^[a-zA-Z0-9\\.\\ \\\\\\-_/\"':]+$"{code} but I'm open to
> suggestions. I'm not sure if there can be issues with HDFS paths (this
> pattern does pass the tests we currently have), or some other use case I'm
> not considering.
> I also think our tests should use all those characters randomly.
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