Redmine OpenID Connect Plugin

Based on the work from intelimina and devopskube.

Introduction

This is a plugin based on the implementation of redmine_cas.

It redirects to an SSO server bypassing the original Redmine login authentication using the SSO server authentication in its place.

Important

User registration is implicit and cannot be disabled at the moment.

So your OpenID provider should probably provide unique endpoints for your needs.

Check out FusionAuth for an excellent solution.

Server Settings

Just include username in the scope being sent and replied to the client app.

Usage

Configure Redmine

1. Go to your Redmine plugins directory.
2. Clone/copy this plugin.
3. Run bundle install
4. Run bundle exec rake redmine:plugins:migrate RAILS_ENV=production
5. Restart your server
6. Login as administrator and head over to the plugins page.
7. Open the configuration page for redmine openid connect plugin.
8. Fill in the details.

Configure Your OpenID Provider

1. Go to your SSO server and add these urls as authorized redirect urls:
   • https://<your-redmine-domain>/oic/local_login
   • https://<your-redmine-domain>/oic/local_logout
2. Check the JWT Token generation. You need the following contents:
   • member_of: String[] of role/group names that your config maps to user properties like is administrator or is authorized to log in
   • user_name: String with the user's desired username (required for user creation), aliases: nickname, preferred_username
   • given_name: String with the user's first name (required for user creation)
   • family_name: String with the user's surname (required for user creation)
   • name: String with the user's full name (used as a fallback for first name and surname)
   • Should some of these fields be missing, try finding Lambda functions or Generators that allow you to customize the JWT Tokens issued

In Case Your OpenID Provider Is Offline

If you enable the OpenId Connect plugin and your OpenId Connect Server is not reachable, but you still would like to login, you can use an additional parameter, to be able to login directly into redmine:

https://<your-redmine-domain>/login?local_login=true

Enjoy!