[wp-trac] [WordPress Trac] #39550: Some Non-image files fail to upload after 4.7.1

[WordPress Trac]

#39550: Some Non-image files fail to upload after 4.7.1
---------------------------+------------------------
 Reporter:  greatislander  |       Owner:  joemcgill
     Type:  defect (bug)   |      Status:  assigned
 Priority:  normal         |   Milestone:  4.7.2
Component:  Upload         |     Version:  trunk
 Severity:  normal         |  Resolution:
 Keywords:  has-patch      |     Focuses:
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Changes (by blobfolio):

 * keywords:  needs-patch => has-patch


Comment:

 I rewrote the `blob-mimes` library to work within the WordPress core and
 altered `wp_check_filetype_and_ext()` to:
  -- only pass expected image types to the image handling (i.e. fix SVG
 breakages)
  -- run FINFO (if possible) if, after the image code, `$type` is still
 false
  -- FINFO checks do not trigger false if the server cannot figure out what
 kind of file it is, or if the MIME returned is the generic "application
 /octet-stream"
  -- the MIME database is greatly expanded (more than 10-fold) via `blob-
 mimes`, though only hooked into this one area at the moment. More work
 could be done to improve/expand MIME-related checks throughout the code
 base. But one step at a time...

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Ticket URL: <https://core.trac.wordpress.org/ticket/39550#comment:58>
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