2

I'm currently programming a single sign-on mechanism for my Wordpress site to allow my company's helpdesk system to authenticate against Wordpress.

In order to allow this to happen I'm making use of wp_signon() to sign the user in if they aren't already signed in. Here's a simplified version of what I'm doing:

<?php
define('WP_USE_THEMES', false);
require("wp-blog-header.php");

if(!is_user_logged_in() && $_POST["log"] == "") {
    //redirect to login form that submits to this PHP script
    exit(0);
}

if(!is_user_logged_in() && $_POST["log"] != "") {
    $creds = array('user_login' => $_POST["log"], 'user_password' => $_POST['pwd'], 'remember' => $_POST["rememberme"]);
    $user_info = wp_signon($creds, false);

    if(!is_a($user_info, 'WP_Error')) {
        $username = $_POST["log"];
        wp_set_current_user($user->ID, $username);
        wp_set_auth_cookie($user->ID, true, false); 
        do_action('wp_login', $username);
    } else {
        write_log(ERROR, "Error authenticating: " . $user_info->get_error_message($user_info->get_error_code()));
    }

$user_info = wp_get_current_user();

/* Code from here uses user attributes to generate and encrypt a single sign-on token */
?>

The problem I'm facing is that even after calling wp_signon(), wp_set_current_user(), wp_set_auth_cookie() and the login actions, the user still isn't logged in. I get their $user_info object, but they aren't logged into Wordpress, so later on when they follow a secured link back from the support system they can't get to the page and have to log in again (thus defeating the purpose of single sign-on).

In addition, I've tried replacing the whole wp_signon() section with auth_redirect() and that does successfully log the user into the site, but I'm finding they get redirected to the profile page, even though the URL has a query parameter to redirect them back to my script.

2

You need to make sure that your code is executed before auth_redirect() is called.

In simple words, you need to hook the whole function using setup_theme action. It worked in my case.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.