Make OpenID Connect work without requiring a name

If there is no name argument given, OmniAuth will try to guess the name
by the class name. In
https://github.com/omniauth/omniauth/blob/v1.9.0/lib/omniauth/strategy.rb#L139,
`OmniAuth::Strategies::OpenIDConnect` gets translated to
`openidconnect`.

This leads to an immediate 404 error after clicking the login button
because OmniAuth can't match the current route (/users/auth/openid_connect)
against the expected one (/users/auth/openidconnect).

Other providers, such as Google OAuth2, set this name as the default
option within the OmniAuth Strategy. Until a fix is merged upstream,
let's just set the parameter ourselves.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/62208

1 files changed, 8 insertions, 0 deletions

diff --git a/spec/lib/gitlab/omniauth_initializer_spec.rb b/spec/lib/gitlab/omniauth_initializer_spec.rb
index f9c0daf1ef1..32296caf819 100644
--- a/spec/lib/gitlab/omniauth_initializer_spec.rb
+++ b/spec/lib/gitlab/omniauth_initializer_spec.rb
@@ -83,5 +83,13 @@ describe Gitlab::OmniauthInitializer do
 
       subject.execute([cas3_config])
     end
+
+    it 'configures name for openid_connect' do
+      openid_connect_config = { 'name' => 'openid_connect', 'args' => {} }
+
+      expect(devise_config).to receive(:omniauth).with(:openid_connect, name: 'openid_connect')
+
+      subject.execute([openid_connect_config])
+    end
   end
 end