[wp-trac] [WordPress Trac] #63104: Undefined constant "BLOGUPLOADDIR" for subdirectory multisites

[WordPress Trac]

#63104: Undefined constant "BLOGUPLOADDIR" for subdirectory multisites
--------------------------------+------------------------------
 Reporter:  danielpw            |       Owner:  (none)
     Type:  defect (bug)        |      Status:  new
 Priority:  normal              |   Milestone:  Awaiting Review
Component:  Networks and Sites  |     Version:  6.7.2
 Severity:  normal              |  Resolution:
 Keywords:  has-testing-info    |     Focuses:  multisite
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Comment (by saurabh.dhariwal):

 Test Case: Fatal Error on Navigating to /wp-content/files/ in Subdirectory
 Multisite

 Title: Verify if navigating to /wp-content/files/ triggers a fatal error
 in a subdirectory multisite setup

 Test Type: Functional, Regression
 Environment:

     WordPress Multisite (Subdirectory Setup)
     PHP Version: 8.1
     Debug Mode: Enabled (define('WP_DEBUG', true); define('WP_DEBUG_LOG',
 true); define('WP_DEBUG_DISPLAY', false);)
     Plugins: Minimal active plugins
     Theme: Default Twenty Twenty-five

 Preconditions:

     WordPress is installed and configured as a Subdirectory Multisite.
     Pretty permalinks are enabled.
     No custom rules affecting /wp-content/files/ are present in .htaccess
 or Nginx configuration.
     The database is backed up before testing.

 Steps to Reproduce:

     Open a browser and navigate to https://example.com/wp-content/files/.
     Observe the response from the server.
     Check the PHP error log (wp-content/debug.log or server logs) for any
 fatal errors.
     Repeat the test with different sub-sites:
         https://example.com/subsite1/wp-content/files/
         https://example.com/subsite2/wp-content/files/
     If no error occurs, manually inspect ms-files.php to verify whether
 BLOGUPLOADDIR is defined.

 Expected Result:

     The page should return a 404 Not Found or a proper redirection if the
 file handler is working correctly.
     No Fatal Error should occur.
     BLOGUPLOADDIR should be properly defined before being used in ms-
 files.php.

 Actual Result:

     [PASS] No fatal error occurs, and a "Page Not Found" message is
 displayed.
     [FAIL] A fatal error appears in ms-files.php, indicating BLOGUPLOADDIR
 is undefined.

 Post-Test Actions:

     If the fatal error is confirmed, check the WordPress core file ms-
 files.php for incorrect reference to BLOGUPLOADDIR.
     If no error occurs, verify the issue with different PHP versions and
 fresh WordPress installations.

 Additional Notes:

     If the fatal error is reproducible, consider defining BLOGUPLOADDIR in
 wp-config.php as a workaround.
     If the issue is not reproducible, it may have been resolved in newer
 WordPress versions or specific server configurations.

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Ticket URL: <https://core.trac.wordpress.org/ticket/63104#comment:3>
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