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module Gitlab
class OmniauthInitializer
def self.enabled?
Gitlab.config.omniauth.enabled ||
Gitlab.config.omniauth.auto_sign_in_with_provider.present?
end
def initialize(devise_config)
@devise_config = devise_config
end
def execute(providers)
providers.each do |provider|
add_provider(provider['name'].to_sym, *arguments_for(provider))
end
end
private
def add_provider(*args)
@devise_config.omniauth(*args)
end
def arguments_for(provider)
provider_arguments = []
%w[app_id app_secret].each do |argument|
provider_arguments << provider[argument] if provider[argument]
end
case provider['args']
when Array
# An Array from the configuration will be expanded.
provider_arguments.concat provider['args']
when Hash
hash_arguments = provider['args'].merge(provider_defaults(provider))
# A Hash from the configuration will be passed as is.
provider_arguments << hash_arguments.symbolize_keys
end
provider_arguments
end
def provider_defaults(provider)
case provider['name']
when 'cas3'
{ on_single_sign_out: cas3_signout_handler }
when 'authentiq'
{ remote_sign_out_handler: authentiq_signout_handler }
when 'shibboleth'
{ fail_with_empty_uid: true }
else
{}
end
end
def cas3_signout_handler
lambda do |request|
ticket = request.params[:session_index]
raise "Service Ticket not found." unless Gitlab::Auth::OAuth::Session.valid?(:cas3, ticket)
Gitlab::Auth::OAuth::Session.destroy(:cas3, ticket)
true
end
end
def authentiq_signout_handler
lambda do |request|
authentiq_session = request.params['sid']
if Gitlab::Auth::OAuth::Session.valid?(:authentiq, authentiq_session)
Gitlab::Auth::OAuth::Session.destroy(:authentiq, authentiq_session)
true
else
false
end
end
end
end
end
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