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HTTP Authentication plugin for redmine
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HTTP Authentication plugin for Redmine ======= This plugin enables an optional HTTP authentication method in the Redmine project management tool. If the REMOTE_USER server environment variable is set, an attempt is made to look up the matching local user account and log in. An attempt is made to synchronize redmine session with the container managed authentication session, but this can be switched off. This module does not disable the form-based login unless HTTP authentication credentials are available, in which case the username from the environment will override the form-based login. Installation ======= Use the following command in your Redmine instance directory: # ruby script/plugin install http://github.com/AdamLantos/redmine_http_auth.git Settings ======= The behavior of this plugin can be customized through the 'settings' page in the plugins menu. Currently there are three options: - enable / disable HTTP Authentication (default: enable) - set the header / environment value to look for (default: REMOTE_USER) - change local user lookup mode from login name to email address (default: login name) - enable / disable automatic registration (default: disable), see below - enable / disable the "keep session" behavior (default: disable), see below Known issues ======= If you encounter "uninitialized constant Rails::Plugin::ApplicationController" exception with any Redmine version prior to Redmine-0.9, just rename your app/controllers/application.rb to app/controllers/application_controller.rb. Automatic registration of user accounts ======= If a user doesn't exist in the redmine local database, the http_authentication plugin can automatically create an account for them. This automatic registration currently presents a form to the user where additional attributes (like email address, first name or last name) should be entered. The plugin currently doesn't handle automatic attribute transformation from the authentication environment (eg. Shibboleth session), but it does enforce the lookup attribute matching with the environment. Automatically registered accounts don't have associated passwords, but the user can change their password via the common password change form. Session synchronization ======= When using container managed authentication (like SSO systems), one needs to ensure, that the currently logged-on user is the same which initiated the session. Additionally, there is a need to offer logout functionality to the end user. By default, the http_authentication plugin synchronizes the container managed authentication session to the redmine session. This means that if the underlying session changes or ends, the redmine session changes and ends as well. Using lazy authentication ======= The http_authentication plugin provides a top menu link for lazy, user-requested authentication purposes. This link points to the `/httpauth-login` URL. If you want to enable both http_authentication and normal form-based logins, you need to use this link to enforce container authentication. However, many authentication mechanisms (namely apache httpd mod_auth_basic) don't offer a way to do lazy authentication. If an URL is not "enforced", the authorization information (eg. REMOTE_USER) is not populated. Thus, the session synchronization code will invalidate user sessions outside the protected realm. You can alter this behavior by switching on the "keep sessions" setting. But please consider that this might be dangerous. Do not use this feature if you are implementing SSO systems, you've been warned. Planned features ======= - option to disable form-based login for users when the plugin is activated - integration with the custom features of various SSO systems (eg. Shibboleth) Copyright (c) 2010 NIIF Institute and Adam Lantos, released under the MIT license