Extension:PluggableAuth

The PluggableAuth extension provides a framework for creating authentication and authorization extensions. PluggableAuth provides the shared code necessary to implement these extensions. PluggableAuth is especially useful for use with enterprise authentication servers accessed through layered mechanisms such as OpenID Connect or SimpleSAMLphp. Authentication extensions subclass the abstract  class. Because wiki sysops may wish to limit access to a subset of all authenticated users, PluggableAuth provides an authorization hook, PluggableAuthUserAuthorization. In addition, in order to augment MediaWiki's group information with that from an external provider, PluggableAuth provides the PluggableAuthPopulateGroups hook.

Configuration
To change the text on the Log in button on the   form from the text "Log In With PluggableAuth", you can edit the page.

The class specified by  must implement the following functions:


 * Called to authenticate the user.
 * The parameters are used to return the user id, username, real name, and email address of the authenticated user and, if the user cannot be authenticated, an optional error message.  is an integer and the remaining parameters are all strings. If the user cannot be authenticated and no value is set for , a default error message is displayed.
 * must be set to  if the user is new, in which case   will add the user to the database.
 * Must return true if the user has been authenticated and false otherwise.
 * If the return to URL, the name of the page, or the query parameters from the page that login was initiated from are necessary in the authenticate function, they may be accessed as follows:


 * Called after a new user has been authenticated and added to the database to add any additional information to the database required by the authentication mechanism.


 * Called when the user logs out to notify the identity provider, if necessary, that cleanup such as removing the user's session should be done.

Authorization hooks use the PluggableAuthUserAuthorization hook to register an implementation of the following function:


 * is the User object for the user requesting authorization
 * must be set to true if the user is authorized and false otherwise.
 * Return true to call other authorization hook implementations and false to skip them.

Accessing Extra Login Fields
If you specify extra fields for the login form using, the fields can be accessed in the   function in an authentication plugin as follows: This will return an array of field values indexed by the name of the field from the field descriptor array.

Release Notes

 * Version 5.7
 * Added error message when there is a rare fatal session error


 * Version 5.6
 * Fixed autologin so it returns to the correct page after authentication.


 * Version 5.5
 * Fixed issue with  hook.


 * Version 5.4
 * Added  and.
 * Coding style fixes.


 * Version 5.3
 * Added.


 * Version 5.2
 * Converted auto login to PHP from JavaScript.


 * Version 5.1
 * Added  hook. Thank you to Poikilotherm for contributing this functionality.


 * Version 5.0
 * Added  and removed use of editmyprivateinfo
 * Added debug statement when returntourl is not set


 * Version 4.2
 * Fixed exception when returntoquery is undefined.


 * Version 4.1
 * Added session variables to hold the name of the page and the query parameters of the page from which login was initiated for use in authenticate


 * Version 4.0
 * Added optional error message to authenticate
 * Bumped version number to synchronize with SimpleSAMLphp and OpenIDConnect extensions


 * Version 2.2
 * Confirm email addresses coming from external authentication sources


 * Version 2.1
 * Update file naming conventions


 * Version 2.0
 * Almost completely rewritten to support the new MediaWiki 1.27 authentication and session management framework
 * Switched to new extension registration
 * Configuration variable names changed to add $wg prefix
 * removed
 * renamed to
 * added to support local password-based login to the wiki in addition to PluggableAuth


 * Version 1.2
 * Moved the addition of a new user to the wiki database to after successful authorization of the user
 * Added   check


 * Version 1.1
 * Added call to logout when session times out to ensure that the deauthenticate function in implementing classes gets called


 * Version 1.0
 * Initial version