[wp-trac] [WordPress Trac] #46375: WordPress discovery MIME type

[WordPress Trac]

#46375: WordPress discovery MIME type
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 Reporter:  killua99      |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:  5.1
 Severity:  normal        |   Keywords:
  Focuses:                |
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 Some plugins, like WooCommerce are having problems when trying to upload a
 CSV file.

 Seems to be an issue in the PHP Library itself or not I'm 100 % clear yet.
 In my case on Pantheon server I've this issue with WordPress 5.1 and
 WooCommerce 3.5.5

 Good description about it is in this comment
 https://wordpress.org/support/topic/wp-5-0-1-breaks-woocommerce-csv-
 import/page/2/#post-11234845 where @tgglv point out that the PHP Library
 finfo_open seems to act different. And perhaps the use of
 /usr/share/misc/magic should improve that finfo.

 The function affected is
 https://github.com/WordPress/WordPress/blob/master/wp-
 includes/functions.php#L2558

 Something like this library:
 https://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types
 Could help to figure the mime.

 This php component use it.
 https://github.com/ralouphie/mimey

 Trace issues:

 https://core.trac.wordpress.org/ticket/45615
 https://github.com/woocommerce/woocommerce/issues/22208


 /cc @dougaitken

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Ticket URL: <https://core.trac.wordpress.org/ticket/46375>
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