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[WIP] Support Dynamic Client Registration #61

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21 changes: 20 additions & 1 deletion lib/omniauth/strategies/openid_connect.rb
Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@ class OpenIDConnect
userinfo_endpoint: "/userinfo",
jwks_uri: '/jwk'
}
option :client_name, "a web application via omniauth-openid-connect" # in case of dynamic registration
option :issuer
option :discovery, false
option :client_signing_alg
Expand Down Expand Up @@ -74,7 +75,18 @@ class OpenIDConnect
end

def client
@client ||= ::OpenIDConnect::Client.new(client_options)
@client ||= \
if client_options.identifier.nil?
registrar.register!.tap do |client|
%i(authorization_endpoint token_endpoint userinfo_endpoint).each do |key|
client.send :"#{key}=", client_options[key]
end
client_options.identifier = client.identifier
client_options.secret = client.secret
end
else
::OpenIDConnect::Client.new(client_options)
end
end

def config
Expand Down Expand Up @@ -138,6 +150,13 @@ def public_key

private

def registrar
::OpenIDConnect::Client::Registrar.new(config.registration_endpoint).tap do |registrar|
registrar.redirect_uris = *client_options.redirect_uri
registrar.client_name = options.client_name
end
end

def issuer
resource = "#{client_options.scheme}://#{client_options.host}" + ((client_options.port) ? ":#{client_options.port.to_s}" : '')
::OpenIDConnect::Discovery::Provider.discover!(resource).issuer
Expand Down