Admin Pagination URLs Use Wrong Hostname

[grimmdude]

The pagination links on the posts/pages screen uses the wrong host in some cases. Particularly for my case I have a Wordpress blog installed on a separate server from my main website, but it's hosted as a subdirectory /blog on the main site using the mod_proxy Apache module. So the pagination links are coming through using the wrong host like this:

​http://1647760595.us-east-1.elb.amazonaws.com/wp-admin/edit.php?paged=2

It seems like these pagination links are the only ones with this issue, and I believe it's because of how they are being constructed.

I've attached a patch that solves the issue for me.

-Garrett

[johnbillion]

Related: #35561.

I'm not sure why there are a few links constructed like this in core. I can't immediately think of anything that would break if they were corrected so they used admin_url().

Does #35561 affect your site too, @grimmdude?

[grimmdude]

@johnbilliion, yes it does look like #35561 is an issue for me as well. Sounds like that OP and I have a similar setup. Thanks,

-Garrett

[johnbillion]

#38414 was marked as a duplicate.

[grimmdude]

Any update on this ticket? Thanks,

-Garrett

[grimmdude]

May I ask what the hold up is on this? Seems like a straightforward fix,

-Garrett

[SergeyBiryukov]

Previously: #18944, #19216, #20562.

[grimmdude]

Hi @SergeyBiryukov,

Just checking in on this one. Does your comment mean that this is something that's being fixed soon? Thanks,

-Garrett

[swissspidy]

The earlier we can test this, the better.

[DaveFX]

Works for me

[swissspidy]

@DaveFX That's not how the dev-feedback keyword should be used. See ​https://make.wordpress.org/core/handbook/contribute/trac/keywords/

[ketanumretiya030]

i have test pagination in admin with pag, post, and media file all is working fine.

[grimmdude]

Hi @ketanumretiya030,

I still see this as an issue when using a proxy as mentioned in the original post. From what I can tell, as long as this URL is built with a concatenation of $_SERVER vars as opposed to using admin_url() then this problem will persist.

​https://github.com/WordPress/WordPress/blob/aaf99e691391cfceb004d848450dbbf3344b1bee/wp-admin/includes/class-wp-list-table.php#L793

-Garrett

[viliusl]

As stated above, this is rare problem, but still happens if WP is used with proxy.

And fix is easy: take host from DB, not form $_SERVER (WP already doing it, sadly, not everywhere).

​https://github.com/WordPress/WordPress/blob/aaf99e691391cfceb004d848450dbbf3344b1bee/wp-admin/includes/class-wp-list-table.php#L793

<?php
$siteurl = get_option('siteurl');
$current_url = parse_url($siteurl, PHP_URL_SCHEME) . '://' . parse_url($siteurl, PHP_URL_HOST) . $_SERVER['REQUEST_URI'];

p.s. similar situation with sorting:
​https://github.com/WordPress/WordPress/blob/aaf99e691391cfceb004d848450dbbf3344b1bee/wp-admin/includes/class-wp-list-table.php#L1077

[wellmadedigital]

We had this same issue and stumbled on this:

"The site’s wp-config.php file needs to be updated with a $_SERVERHTTP_HOST? definition pointing at the main site URL (example.com in the example we’ve been considering)." Source: ​https://kinsta.com/knowledgebase/reverse-proxy/

Adding $_SERVER['HTTP_HOST'] = 'yoursite.com'; to our ProxyPass settings in wp-config resolved it.

As an example:

Site exists at subdomain.yoursite.com. Proxied to www.yoursite.com/subdomain

Added to wp-config to make this work and resolve many of the Wordpress Admin URL issues (pagination, editing users, etc.):

<?php
# ProxyPass Settings 
# 
# DO NOT REMOVE: overriding the following variables is
# required to ensure that any request /journal/* is handled
$_SERVER['REQUEST_URI'] = '/subdomain' . $_SERVER['REQUEST_URI'];
$_SERVER['SCRIPT_NAME'] = '/subdomain' . $_SERVER['SCRIPT_NAME'];
$_SERVER['PHP_SELF'] = '/subdomain' . $_SERVER['PHP_SELF'];
$_SERVER['HTTP_HOST'] = 'www.yoursite.com';

I still agree with the OP that this feels like a core bug, but I wanted to throw this out there as an alternative solution that doesn't require core revision.

[ocean90]

#46037 was marked as a duplicate.

[ocean90]

#47033 was marked as a duplicate.

[ooglek]

Let's make this happen! Is the best path here using admin_url(), get_option('siteurl'), get_site_url() or some other replacement for the hardcoded $_SERVER['HTTP_HOST'] ?

admin_url() calls get_admin_url() which calls get_site_url() which calls get_option('siteurl')

It seems admin_url() is a higher level method and better place to start. The original diff seems appropriate.

There are only three places left in the wp-admin/ directory where HTTP_HOST is referenced:

in misc.php 5.1.1

<?php
1164
1165     // Ensure we're using an absolute URL.
1166     $current_url  = set_url_scheme( 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );
1167     $filtered_url = remove_query_arg( $removable_query_args, $current_url );

In class-wp-list-table.php 5.1.1

<?php
 796         $removable_query_args = wp_removable_query_args();
 797
 798         $current_url = set_url_scheme( 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );
 799
 800         $current_url = remove_query_arg( $removable_query_args, $current_url );

and

<?php
1080         list( $columns, $hidden, $sortable, $primary ) = $this->get_column_info();
1081
1082         $current_url = set_url_scheme( 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );
1083         $current_url = remove_query_arg( 'paged', $current_url );
1084

Let's fix this.

[SergeyBiryukov]

#47356 was marked as a duplicate.

[kwhat]

What can be done to speed up the adoption of the above fixes? Can I make a pull-request or do we need a diff file or is something else holding this up?