zammad/app/channels/application_cable/connection.rb

# Copyright (C) 2012-2024 Zammad Foundation, https://zammad-foundation.org/

module ApplicationCable
  class Connection < ActionCable::Connection::Base
    identified_by :current_user
    identified_by :sid

    # current_user is stored in the context of GraphQL which is persistent
    #   for the scope of a subscription and cannot be changed from within
    #   other subscriptions.
    # Therefore, on login/logout, a new web socket connection must be made to
    #   reflect the changes within GraphQL.
    def connect
      find_verified_user
      UserInfo.current_user_id = current_user&.id
    end

    private

    def find_verified_user
      session_id = cookies[Zammad::Application::Initializer::SessionStore::SESSION_KEY]
      return if session_id.blank?

      private_id = Rack::Session::SessionId.new(session_id).private_id
      return if private_id.blank?

      session = ActiveRecord::SessionStore::Session.find_by(session_id: private_id)
      return if session.blank?

      self.current_user = User.find_by(id: session.data['user_id'])
      self.sid          = session_id
    end
  end
end