opf/openproject

#-- copyright
# OpenProject is an open source project management software.
# Copyright (C) the OpenProject GmbH
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 3.
#
# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
# Copyright (C) 2006-2013 Jean-Philippe Lang
# Copyright (C) 2010-2013 the ChiliProject Team
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
#
# See COPYRIGHT and LICENSE files for more details.
#++

require "rack/oauth2"
require "uri/http"

module OAuthClients
  class RedirectUriFromStateService
    def initialize(state:, cookies:)
      @state = state
      @cookies = cookies
    end

    def call
      redirect_uri = oauth_state_cookie

      if redirect_uri.present? && ::API::V3::Utilities::PathHelper::ApiV3Path::same_origin?(redirect_uri)
        ServiceResult.success(result: redirect_uri)
      else
        ServiceResult.failure
      end
    end

    private

    def oauth_state_cookie
      return nil if @state.blank?

      state_cookie = @cookies["oauth_state_#{@state}"]
      return nil if state_cookie.blank?

      state_value = MultiJson.load(@cookies["oauth_state_#{@state}"], symbolize_keys: true)
      state_value[:href]
    end
  end
end