We created a must-use plugin and added two functions that have fixed nearly all of the problems we were having. Here’s the code if you want to try it out:
// Takes care of form action issues to prevent mismatch between the URL of wp-login.php and site_url(), which causes authentication to fail
function fix_remote_access()
{
if (substr_count($_SERVER[‘PHP_SELF’], ‘wp-login.php’)):
remove_filter(‘pre_option_siteurl’, ‘domain_mapping_siteurl’);
endif;
}
add_action(‘init’, ‘fix_remote_access’)
// Used in place of redirect_login_to_orig()
// Takes care of login page URL issues to prevent mismatch between the URL of wp-login.php and site_url(), which causes authentication to fail
function new_redirect_login_to_orig()
{
if (function_exists(‘get_original_url’)):
if ( !get_site_option( ‘dm_remote_login’ ) || $_GET[ ‘action’ ] == ‘logout’ || isset( $_GET[ ‘loggedout’ ] ) ):
return false;
endif;
$thisurl = (is_ssl() ? ‘https://’ : ‘http:/’).$_SERVER[‘SERVER_NAME’].$_SERVER[‘REQUEST_URI’].’
‘;
$url = get_original_url( ‘siteurl’ );
if (!substr_count($thisurl, $url)):
$url .= “/wp-login.php”;
echo “<script type=’text/javascript’>\nwindow.location = ‘$url'</script>”;
endif;
endif;
}
add_action(‘login_head’, ‘new_redirect_login_to_orig’);
