[wp-trac] [WordPress Trac] #30598: Multisite Subdomain doesn't properly redirect users logging in to the primary site

[WordPress Trac]

#30598: Multisite Subdomain doesn't properly redirect users logging in to the
primary site
--------------------------------+------------------------
 Reporter:  Ipstenu             |       Owner:
     Type:  defect (bug)        |      Status:  new
 Priority:  normal              |   Milestone:  4.5
Component:  Networks and Sites  |     Version:
 Severity:  normal              |  Resolution:
 Keywords:  needs-patch         |     Focuses:  multisite
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Comment (by ShinichiN):

 I'm wondering if it is better to use the `allowed_redirect_hosts` filter
 in `wp_validate_redirect()` and add the subdomain host name to the
 `$allowed_hosts` array.

 {{{#!php
 <?php
 /**
  * Filter the whitelist of hosts to redirect to.
  *
  * @since 2.3.0
  *
  * @param array       $hosts An array of allowed hosts.
  * @param bool|string $host  The parsed host; empty if not isset.
  */
 $allowed_hosts = (array) apply_filters( 'allowed_redirect_hosts',
 array($wpp['host']), isset($lp['host']) ? $lp['host'] : '' );

 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/30598#comment:6>
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