Nextcloud

Tested Versions #

• Authelia
  • v4.35.5
• Nextcloud
  • 22.1.0

Before You Begin #

Common Notes #

1. The OpenID Connect 1.0 client_id parameter:
   1. This must be a unique value for every client.
   2. The value used in this guide is merely for demonstration purposes and you can theoretically use nearly any alphanumeric string.
2. The OpenID Connect 1.0 secret parameter:
   1. The value used in this guide is merely for demonstration purposes and you should absolutely not use this in production and should instead utilize the How Do I Generate Client Secrets FAQ.
   2. This string may be stored as plaintext in the Authelia configuration but this behaviour is deprecated and is not guaranteed to be supported in the future. See the Plaintext guide for more information.
3. The Configuration example for Authelia is only a portion of the required configuration and it should be used as a guide in conjunction with the standard OpenID Connect 1.0 Configuration guide.

Assumptions #

This example makes the following assumptions:

• Application Root URL: https://nextcloud.example.com
• Authelia Root URL: https://auth.example.com
• Client ID: nextcloud
• Client Secret: insecure_secret

Important Note: it has been reported that some of the Nextcloud plugins do not properly encode the client secret. as such it’s important to only use alphanumeric characters as well as the other RFC3986 Unreserved Characters. We recommend using the generating client secrets guidance above.

Configuration #

Application #

To configure Nextcloud to utilize Authelia as an OpenID Connect 1.0 Provider:

1. Install the Nextcloud OpenID Connect Login app
2. Add the following to the Nextcloud config.php configuration:

$CONFIG = array (
    'allow_user_to_change_display_name' => false,
    'lost_password_link' => 'disabled',
    'oidc_login_provider_url' => 'https://auth.example.com',
    'oidc_login_client_id' => 'nextcloud',
    'oidc_login_client_secret' => 'insecure_secret',
    'oidc_login_auto_redirect' => false,
    'oidc_login_end_session_redirect' => false,
    'oidc_login_button_text' => 'Log in with Authelia',
    'oidc_login_hide_password_form' => false,
    'oidc_login_use_id_token' => true,
    'oidc_login_attributes' => array (
        'id' => 'preferred_username',
        'name' => 'name',
        'mail' => 'email',
        'groups' => 'groups',
    ),
    'oidc_login_default_group' => 'oidc',
    'oidc_login_use_external_storage' => false,
    'oidc_login_scope' => 'openid profile email groups',
    'oidc_login_proxy_ldap' => false,
    'oidc_login_disable_registration' => true,
    'oidc_login_redir_fallback' => false,
    'oidc_login_alt_login_page' => 'assets/login.php',
    'oidc_login_tls_verify' => true,
    'oidc_create_groups' => false,
    'oidc_login_webdav_enabled' => false,
    'oidc_login_password_authentication' => false,
    'oidc_login_public_key_caching_time' => 86400,
    'oidc_login_min_time_between_jwks_requests' => 10,
    'oidc_login_well_known_caching_time' => 86400,
    'oidc_login_update_avatar' => false,
);

Authelia #

The following YAML configuration is an example Authelia client configuration for use with Nextcloud which will operate with the above example:

identity_providers:
  oidc:
    ## The other portions of the mandatory OpenID Connect 1.0 configuration go here.
    ## See: https://www.authelia.com/c/oidc
    clients:
    - id: nextcloud
      description: NextCloud
      secret: '$pbkdf2-sha512$310000$c8p78n7pUMln0jzvd4aK4Q$JNRBzwAo0ek5qKn50cFzzvE9RXV88h1wJn5KGiHrD0YKtZaR/nCb2CJPOsKaPK0hjf.9yHxzQGZziziccp6Yng'  # The digest of 'insecure_secret'.
      public: false
      authorization_policy: two_factor
      redirect_uris:
        - https://nextcloud.example.com/apps/oidc_login/oidc
      scopes:
        - openid
        - profile
        - email
        - groups
      userinfo_signing_algorithm: none

See Also #

• Nextcloud OpenID Connect Login app
• Nextcloud OpenID Connect Login Documentation