This is the a OmniAuth strategy for authenticating to LinkedIn using OpenID. To use it, you'll need to register an application on the LinkedIn Apps Page to get your Client ID and Client Secret. Additionally, you'll need to request access to the "Sign In with LinkedIn using OpenID Connect" product.

For more details, read the Sign In with LinkedIn using OpenID Connect documentation.

gem 'omniauth-linkedin-openid'

use OmniAuth::Builder do
  provider :linkedin,
    client_id: ENV['LINKEDIN_CLIENT_ID'],
    client_secret: ENV['LINKEDIN_CLIENT_SECRET']
end

With the LinkedIn API, you have the ability to specify which permissions you want users to grant your application. For more details, read the LinkedIn Authenticating Members documentation.

The following scopes are requested by default:

'openid profile email'

Here is an example of how you can configure the scope option:

provider :linkedin,
  client_id: ENV['LINKEDIN_CLIENT_ID'],
  client_secret: ENV['LINKEDIN_CLIENT_SECRET'],
  scope: 'openid profile email'

When specifying which permissions you want users to grant to your application, you can also specify the array of fields that you want returned in the OmniAuth hash. The following fields are requested by default:

%w(id full-name first-name last-name picture-url email-address)

Here is an example of how you can configure the fields option:

provider :linkedin,
  client_id: ENV['LINKEDIN_CLIENT_ID'],
  client_secret: ENV['LINKEDIN_CLIENT_SECRET'],
  fields: %w(id full-name email-address)

To see a complete list of available fields, read the LinkedIn Profile Fields documentation.

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

Bug reports and pull requests are welcome on GitHub at https://github.com/jclusso/omniauth-linkedin-openid.

The gem is available as open source under the terms of the MIT License.

Thanks to @decioferreira for making omniauth-linkedin-oauth2 which this was based on.