[wp-trac] [WordPress Trac] #48506: wp_mkdir_p does not support relative paths

[WordPress Trac]

#48506: wp_mkdir_p does not support relative paths
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 Reporter:  greengremlin  |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:  5.2.4
 Severity:  normal        |   Keywords:
  Focuses:                |
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 I have a wordpress install where the uploads folder is one level above the
 root path.

 `/www/public/wordpress` (WordPress root)
 `/www/public/uploads` (Uploads folder)

 Here's the relevant `wp-config.php`:

 {{{#!php
 <?php
 if ( !defined('ABSPATH') )
   define('ABSPATH', dirname(__FILE__) . '/wordpress/');
 define('WP_SITEURL', $protocol . '://' . $_SERVER['HTTP_HOST'] .
 '/wordpress');
 define('UPLOADS', '../uploads');
 }}}

 This works well and I've had no issues until recently. I just traced a bug
 in the FooGallery plugin where thumbnails were not getting generated to
 the fact that it was calling `wp_mkdir_p` with a path that includes `..`,
 which resulted in the directory not getting created.

 It seems `wp_mkdir_p` needs to resolve the relative path, before trying to
 create the folder.

 For example:

 {{{#!php
 <?php
 wp_mkdir_p('/www/public/wordpress/../uploads/cache/2019/07/2019-my-pic');
 }}}

 Should resolve the path to `/www/public/uploads/cache/2019/07/2019-my-pic`
 and create the folder using the resolved path.

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/48506>
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