OmniAuth Islykill

This is a specific SAML strategy that handles authentication to Icelands Íslykill for OmniAuth

https://github.com/Algrim/omniauth-islykill

• OmniAuth 1.2+
• ruby-saml
• Ruby 1.9.x or Ruby 2.1.x

Use the Islykill strategy in your Rails application:

in Gemfile:

gem 'omniauth-islykill'

and in config/initializers/omniauth.rb:

Rails.application.config.middleware.use OmniAuth::Builder do
    provider :islykill,
        :assertion_consumer_service_url     => "consumer_service_url",
        :issuer                             => "Islyklar",
        :idp_sso_target_url                 => "https://innskraning.island.is/?id=consumer_service_url",
        :idp_cert                           => "-----BEGIN CERTIFICATE-----\n...-----END CERTIFICATE-----",
        :idp_cert_fingerprint               => "E7:91:B2:E1:...",
        :name_identifier_format             => "urn:oasis:names:tc:SAML:2.0:attrname-format:basic"
end

For IdP-initiated SSO, users should directly access the IdP SSO target URL. Set the href of your application's login link to the value of idp_sso_target_url. For SP-initiated SSO, link to /auth/saml.

The service provider metadata used to ease configuration of the SAML SP in the IdP can be retrieved from http://example.com/auth/saml/metadata. Send this URL to the administrator of the IdP.

• :assertion_consumer_service_url - The URL at which the SAML assertion should be received. If not provided, defaults to the OmniAuth callback URL (typically http://example.com/auth/saml/callback). Optional.

• :issuer - The name of your application. Some identity providers might need this to establish the identity of the service provider requesting the login. Required.

• :idp_sso_target_url - The URL to which the authentication request should be sent. This would be on the identity provider. Required.

• :idp_sso_target_url_runtime_params - A dynamic mapping of request params that exist during the request phase of OmniAuth that should to be sent to the IdP after a specific mapping. So for example, a param original_request_param with value original_param_value, could be sent to the IdP on the login request as mapped_idp_param with value original_param_value. Optional.

• :idp_cert - The identity provider's certificate in PEM format. Takes precedence over the fingerprint option below. This option or :idp_cert_fingerprint must be present.

• :idp_cert_fingerprint - The SHA1 fingerprint of the certificate, e.g. "90:CC:16:F0:8D:...". This is provided from the identity provider when setting up the relationship. This option or :idp_cert must be present.

• :name_identifier_format - Used during SP-initiated SSO. Describes the format of the username required by this application. If you need the email address, use "urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress". See http://docs.oasis-open.org/security/saml/v2.0/saml-core-2.0-os.pdf section 8.3 for other options. Note that the identity provider might not support all options. If not specified, the IdP is free to choose the name identifier format used in the response. Optional.

• See the OneLogin::Saml::Settings class in the Ruby SAML gem for additional supported options.

Authored by Björgvin Bæhrenz Þórðarson.

Maintained by Björgvin Bæhrenz Þórðarson.

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