OpenID For WordPress

Update: 12th October 2007 – this project is to be considered abandoned. Please see How To Set Up OpenID For WordPress Comments instead. Thanks for the support and for your interest in OpenID.

THIS IS ALL HORRIBLY OUT OF DATE. THE DOWNLOAD LINKS DON’T WORK, I KNOW. GET OVER IT. More seriously now, I am working on a new version of this that actually works as a WordPress 2.0.x plugin. It’s very nice, but it’s not finished. Watch this space. In the meantime, why not take a look at OpenID Comments For WordPress (which is based on my preliminary work, here). Thanks for all the attention, guys.

As promised, I’m releasing the first usable version (v0.4) of my WordPress OpenID plugin tool. It’s very, very messy and a little buggy. Plus, installing it requires that you hack a few PHP files… use at your own risk. You’ll need a WordPress v1.5 weblog. Download this package and decompress it to your WordPress directory. It will create an openid_icons directory, a file called openid.php (the main codebase), and a file called openidform.php (the form that appears on your blog). Edit openid.php and substitute your own weblog URL in at the appropriate places (near the top). Link in the login form wherever you like. I’ve done so in my theme’s “sidebar.php” file, with the following code: <?php include (TEMPLATEPATH . '/openidform.php'); ?> In your main index.php, add a line to include the openid.php file. This will allow logins and logouts to be processed. Something like this: <?php require_once('openid.php'); ?> In wp-comments-post.php (the comments processor), substitute the following code in under “// If the user is logged in”: // If the user is logged in get_currentuserinfo(); if ( $user_ID ) { $comment_author = addslashes($user_identity); $comment_author_email = addslashes($user_email); $comment_author_url = addslashes($user_url); } elseif ($_SESSION['sess_openid_auth_code'] != "") { $comment_author = addslashes($_SESSION['sess_openid_auth_code']); $comment_author_email = "openid@example.com"; $comment_author_url = addslashes($_SESSION['sess_openid_auth']); } else { if ( get_option('comment_registration') ) die( __('Sorry, you must be logged in to post a comment.') ); } Notice the extra section, relying upon $_SESSION['sess_openid_auth_code']. That’s the magic bit. And it should ‘just work’. Let me know if it doesn’t; I’ll be improving the codebase over the coming weeks and I’d like to include your suggestions. If you need any help setting it up, I can probably help with that too, or even with adapting the code to work with other applications (than WordPress). Features so far:

  • Authenticate OpenID users
  • Easily authenticate OpenID users from particular servers, including members of LiveJournal, DeadJournal, and Level9
  • Authenticated OpenID users can post comments

Features to come:

  • Cookie-based “remember me”
  • Ability to authenticate WordPress users (e.g. the weblog owner) by an OpenID
  • “Friends Only” protected posts, which can only be read by certain authenticated users
  • AJAX-powered log-in (to save users from having their browsers redirected excessively, and because it can be made to look swish), where supported

If you want to help code, just drop me a message.

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