Nginx RegEx to match a directory and file

Question

I'm wondering if it's possible to match Wordpress directory and specific file in the same location, so at the moment I've got rule to match only the wp-admin directory:

## Restricted Access directory
location ^~ /wp-admin/ {
        auth_basic            "Access Denied!";
        auth_basic_user_file  .users;

location ~ \.php$ {
        fastcgi_pass unix:/var/run/php-fpm/www.sock;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
        include        fastcgi_params;
        }
        }

I would like to also match the wp-login.php file but I can't get to work, I've tried the following:

location ^~ /(wp-admin/|wp-login.php) {
...

Answer 1

Your attempt doesn't work because of the way that nginx selects a location directive. Blocks using ~ take precedence over those using ^~, so the .php block is being selected for wp-login.php. The best approach is probably to catch this inside the .php block:

location ~ \.php$ {
    location ~ ^/wp-login\.php$ {
        auth_basic            "Access Denied!";
        auth_basic_user_file  .users;
    }
    fastcgi_pass unix:/var/run/php-fpm/www.sock;
    ...
}

Answer 2

One reading your comments on mgorven's answers, i believe this is what you are trying to achieve.

Add this block before your \.php$ matching block.

location ~* ^/wp-admin/$ {
    allow 192.168.0.10;
    deny all;
    include fastcgi_params;
    fastcgi_index index.php;
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    fastcgi_pass your_back_endphp;
}

location ~* ^/wp-login.php$ {
    allow 102.168.0.10;
    deny all;
    try_files $uri =404;
    fastcgi_split_path_info ^(.+\.php)(/.+)$;
    include fastcgi_params;
    fastcgi_index index.php;
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    fastcgi_pass your_back_endphp;
}

With wp-admin you cannot have fastcgi_split_path_info due to this will break styling and js being served.