Redmine

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Redmine is is a flexible project management web application. Written using the Ruby on Rails framework, it is cross-platform and cross-database.

It can be configured to authenticate users with OpenID Connect with a plugin.

Make sure you have already enabled OpenID Connect on your LemonLDAP::NG server.

Make sure you have generated a set of signing keys in OpenID Connect Service » Security » Keys

You also need to set a Signing key ID to a non-empty value of your choice.

Then, add a Relying Party with the following configuration:

Options » Basic » Client ID : choose a client ID, such as my_client_id
Options » Basic » Client Secret : choose a client secret, such as my_client_secret
Options » Basic » Allowed redirection address : https://my_redmine_server/oic/local_login
Options » Advanced » Force claims to be returned in ID Token : On
Options » Security » ID Token Signature Algorithm : RS512
Options » Logou( » Allowed redirection address for logout : https://my_redmine_server/oic/local_logout

Define exported attributes:

To transfer groups:

Declare member_of exported attribute as an array
Declare a new scope named groups whith value member_of
Create a local macro member_of which will return ["admin"] is user is administrator and ["user"] else.

Go in Redmine admin console and configure the OpenID Connect plugin:

Enabled: check the box
Client ID: my_client_id
OpenID Connect server url: https://auth.example.com/
Client Secret: my_client_secret
OpenID Connect scopes: openid profile email groups
Authorized group: leave blank
Admins group: admin
How often to retrieve openid configuration: leave blank
Disable Ssl Validation: uncheck the box
Login Selector: uncheck the box
Create user if not exists: check the box
Users from the following auth sources will be required to login with SSO: do not select anythin

Attention

A bug has been reported, you must apply a patch if you transfer groups.

Note