3.1 KiB
3.1 KiB
| title |
|---|
| Advanced | Basic OAuth2 Authentication |
Introduction
!!! warning "This is only a supplement to the existing account provisioners"
Accounts must still be managed via the configured [`ACCOUNT_PROVISIONER`][env::account-provisioner] (FILE or LDAP).
Reasoning for this can be found in [#3480][gh-pr::oauth2]. Future iterations on this feature may allow it to become a full account provisioner.
The present OAuth2 support provides the capability for 3rd-party applications such as Roundcube to authenticate with DMS (dovecot) by using a token obtained from an OAuth2 provider, instead of passing passwords around.
Example (Authentik & Roundcube)
This example assumes you have:
- A working DMS server set up
- An Authentik server set up (documentation)
- A Roundcube server set up (either docker or bare metal)
!!! example "Setup Instructions"
=== "1. Docker Mailserver"
Edit the following values in `mailserver.env`:
```env
# -----------------------------------------------
# --- OAUTH2 Section ----------------------------
# -----------------------------------------------
# empty => OAUTH2 authentication is disabled
# 1 => OAUTH2 authentication is enabled
ENABLE_OAUTH2=1
# Specify the user info endpoint URL of the oauth2 provider
OAUTH2_INTROSPECTION_URL=https://authentik.example.com/application/o/userinfo/
```
=== "2. Authentik"
1. Create a new OAuth2 provider
2. Note the client id and client secret
3. Set the allowed redirect url to the equivalent of `https://roundcube.example.com/index.php/login/oauth` for your RoundCube instance.
=== "3. Roundcube"
Add the following to `oauth2.inc.php` ([documentation](https://github.com/roundcube/roundcubemail/wiki/Configuration)):
```php
$config['oauth_provider'] = 'generic';
$config['oauth_provider_name'] = 'Authentik';
$config['oauth_client_id'] = '<insert client id here>';
$config['oauth_client_secret'] = '<insert client secret here>';
$config['oauth_auth_uri'] = 'https://authentik.example.com/application/o/authorize/';
$config['oauth_token_uri'] = 'https://authentik.example.com/application/o/token/';
$config['oauth_identity_uri'] = 'https://authentik.example.com/application/o/userinfo/';
// Optional: disable SSL certificate check on HTTP requests to OAuth server. For possible values, see:
// http://docs.guzzlephp.org/en/stable/request-options.html#verify
$config['oauth_verify_peer'] = false;
$config['oauth_scope'] = 'email openid profile';
$config['oauth_identity_fields'] = ['email'];
// Boolean: automatically redirect to OAuth login when opening Roundcube without a valid session
$config['oauth_login_redirect'] = false;
```