Getting DokuWiki to use WordPress Authentication (v1.2)

This extension does not transform your WordPress (WP) posts into DokuWiki (DW) entires. If your looking for that functionality, I’d recommend doing a google search for dwBliki plugin.

What this extension does is to get DokuWiki to use WordPress’ authentication, i.e. DokuWiki to use WordPress’ user database, using an authentication plugin for DokuWiki.

Download the DokuWiki Authentication Extension (v1.2)

Previous downloads:Download the DokuWiki Authentication Extension (v1.1) and Download the DokuWiki Authentication Extension

Before you begin, you’ll need to be able to run MySQL commands on your WP database and shouldn’t be afraid of modifying some code.

Much of this work was based on the DW splitbrain.org wiki documentation. I used the phpbb integration as a template. See:

http://wiki.splitbrain.org/wiki:auth:mysql
http://wiki.splitbrain.org/wiki:tips:integrate_with_phpbb

I’ve tested this with versions:

DokuWiki: 2006-03-09d
Wordpress: 2.0.4

I can’t speak for other versions.

Version History

1.2 (10/10/2006)

  • The extension turns back on “magic quotes” which causes additional slashes in DW articles after editing.

1.1 (03/10/2006)

  • Small fix for using WordPress tags while logged in.
  • Documentation/Instructions updates

1.0 (27/09/2006)

  • First Release

Notes on using this authentication plugin

I’d recommend that you get your users to use the WP’s Register, Login and Logout interface rather than DW’s. However, DW’s Login and Logout should work fine and they should log in and out of WP at the same time.

BUT you should use WP to add new users. If you use DW, they won’t be configured correctly to use WP as you need to modify two SQL tables and DW will only modify one.

By default all users are a member of the “defaultgroup”. WP does not have any concept of user groups. It does have a concept of roles which I have ignored because I wanted the flexibility of DW’s user groups. You can’t really remove users from this group unless you modify “wordpress.class.php”.

You can use DW’s “User Manager” to add and remove your WP users from DW’s user groups but avoid the “Configuration Settings” as this overwrites your local.php and seems to cause problems for the WP authenication.

This plugin also introduces a useful feature. Because it pulls in your WordPress files, you can then, anywhere else in DW, access WordPress functions. This means, for example, you can use template functions like “get_header();” or “get_sidebar();” if your skinning your DW. :)

First up: Installing WordPress and/or DokuWiki

For installing WP or DW, refer to the included installation documentation.

Install WP first and make sure everything is up and running before installing DW. Make sure that DW is installed in a directory at the same level as WP or as a subdirectory of WP. This is to make sure that the cookie domains are the same.

In my test environment I had wordpress installed @ ~/public_html/test/wp and DW installed @ ~/public_html/test/dw.

Now, configuring DokuWiki…

First, copy “wordpress.class.php” to /inc/auth. Open it in your favorite text editor and make sure that WP_ROOT is correct:

if(!defined(‘WP_ROOT’)) define(‘WP_ROOT’, DOKU_INC.’../wp/’);

I have it configured by default to assume that dokuwiki is installed at the same level as WP and that WP is installed in a directory called “wp”.

acl.auth.php

You probably created a “conf/acl.auth.php” when you installed DW initially. If you didn’t, make a copy of conf/acl.auth.php.dist and name it “acl.auth.php”.

local.php

You probably created a “conf/local.php” when you installed DW initially. If you didn’t, make a copy of conf/local.php.dist and name it “local.php”. Open it in your favorite text editor and add (or modify) these settings:

// Disable the ability to register: users should register via the WordPress interface
$conf['openregister']= 0;
// Disable password autogen: not important if users can’t register
$conf['autopasswd'] = 1;
// Disable password resend: let wordpress do this
$conf['resendpasswd']= 0;
// Enable access control
$conf['useacl'] = 1;
// Use wordpress authentication
$conf['authtype'] = ‘wordpress';
// Not sure what passcrypt needs to be set to, but this works
$conf['passcrypt'] = ‘smd5′;
// Recommend you set defaultgroup to “user” and “superuser” admin group.
// as we’ll be creating them during our integration.
$conf['defaultgroup']= ‘user';
$conf['superuser'] = ‘@admin';
// Updating profile requires password
$conf['profileconfirm'] = ‘1’;

Finally, modifying your SQL Database

First, backup your database. You can do this quite easily via WP’s Database plugin.

You need to create two new tables to support DW. In the code below I’ve called these tables “wp_dw_groups” and “wp_dw_usergroups”. If you did not use “wp_” as your database prefix for WordPress, you will need to modify these commands before you use them and replace “wp_” with the prefix you used. “wordpress.class.php” uses the database prefix to reference these tables.

Connect to your database and run these two commands:

CREATE TABLE `wp_dw_groups` (
`gid` int(10) UNSIGNED NOT NULL AUTO_INCREMENT,
`name` varchar(50) NOT NULL DEFAULT ”,
PRIMARY KEY (`gid`),
UNIQUE KEY `name` (`name`)
) TYPE = MYISAM;
CREATE TABLE `wp_dw_usergroup` (
`uid` int(10) UNSIGNED NOT NULL DEFAULT ‘0’,
`gid` int(10) UNSIGNED NOT NULL DEFAULT ‘0’,
PRIMARY KEY (`uid`,`gid`)
) TYPE = MYISAM;

These will create the two tables you need. However, you need to setup some groups too. So these two commands will create a user and an admin group.

INSERT INTO `wp_dw_groups` VALUES (1,”admin”);
INSERT INTO `wp_dw_groups` VALUES (2,”user”);

Now you need to give yourself admin rights. Normally the first user created in WP is the admin account. This normally has the ID of 1. So now we will add admin user to admin and user groups.

INSERT INTO `wp_dw_usergroup` VALUES (1,1);
INSERT INTO `wp_dw_usergroup` VALUES (1,2);

Finished

Now you should be able to login and logout using your WP’s users on DW! :)

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