Joe McGill 8eff927823 Media: Improve image filetype checking. ...

This adds a new function `wp_get_image_mime()` which is used by
`wp_check_filetype_and_ext()` to validate image files using
`exif_imagetype()` if available instead of `getimagesize()`.

`getimagesize()` is less performant than `exif_imagetype()` and is
dependent on GD. If `exif_imagetype()` is not available, it falls back to
`getimagesize()` as before.

If `wp_check_filetype_and_ext()` can't validate the filetype, we now return
`false` for ext/MIME values.

See #11946.
Built from https://develop.svn.wordpress.org/trunk@39831


git-svn-id: http://core.svn.wordpress.org/trunk@39769 1a063a9b-81f0-0310-95a4-ce76da25c4cd

2017-01-11 13:08:44 +00:00

171 KiB

Raw Blame History

View Raw