[wp-trac] [WordPress Trac] #62718: Automatic updater of WordPress always fails if FS_METHOD is ftpext since 6.6 with PHP 8.0+

[WordPress Trac]

#62718: Automatic updater of WordPress always fails if FS_METHOD is ftpext since
6.6 with PHP 8.0+
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 Reporter:  hideishi                             |       Owner:
                                                 |  SergeyBiryukov
     Type:  defect (bug)                         |      Status:  reopened
 Priority:  normal                               |   Milestone:  6.9
Component:  Upgrade/Install                      |     Version:  6.6
 Severity:  major                                |  Resolution:
 Keywords:  needs-unit-tests has-testing-info    |     Focuses:
  changes-requested reporter-feedback            |
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Comment (by hideishi):

 By the way, let me also explain why there is a use case of using ftpext
 rather than direct for automatic updates.

 In shared hosting, it is common that PHP runs as your UID and GID.
 Therefore, FS_METHOD direct works fine since file/directory owner is the
 same as PHP user.

 In typical enterpise servers (Linux, AIX, whatever you want), it is common
 that PHP (and Apache) runs as **www** user. However, this www user is
 acutally not allowed to login directly from security policy.
 In this scenario, you will have a separate account (say myuser). So,
 actual contents such as HTML contents as well as PHP codes (WordPress) is
 stored on the location where myuser is uploadable. Since the
 file/directory is owned by myuser, it is different from the user that runs
 PHP (www).
 Here, we use FSMETHOD=ftpext to force PHP to also access the
 file/directory via FTP so that the file/directory owners will be kept as
 myuser and not be overwritten (or probably forbidden) by accessing by www
 user.

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Ticket URL: <https://core.trac.wordpress.org/ticket/62718#comment:19>
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