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: / var / canvas / app / models / authentication_provider /
Filename : cas.rb
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# frozen_string_literal: true

#
# Copyright (C) 2011 - present Instructure, Inc.
#
# This file is part of Canvas.
#
# Canvas is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the Free
# Software Foundation, version 3 of the License.
#
# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
#
# You should have received a copy of the GNU Affero General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
#

require "casclient"

class AuthenticationProvider::CAS < AuthenticationProvider::Delegated
  def self.sti_name
    "cas"
  end

  def self.recognized_params
    super + %i[auth_base log_in_url jit_provisioning].freeze
  end

  def self.deprecated_params
    [:unknown_user_url].freeze
  end

  def self.recognized_federated_attributes
    # we allow any attribute
    nil
  end

  def self.supports_debugging?
    debugging_enabled?
  end

  def self.debugging_sections
    [nil]
  end

  def self.debugging_keys
    [{
      debugging: -> { t("Testing state") },
      ticket_received: -> { t("Received CAS Ticket") },
      validate_service_ticket: -> { t("Validated Service Ticket") },
    }]
  end

  def auth_provider_filter
    [nil, self]
  end

  def client
    @client ||= CASClient::Client.new(
      cas_base_url: auth_base,
      encode_extra_attributes_as: :raw
    )
  end

  def user_logout_redirect(controller, _current_user)
    client.logout_url(nil, controller.cas_login_url(id: self), controller.cas_login_url(id: self))
  end
end