Devise::Strategies::CasAuthenticatable

# File lib/devise_cas_authenticatable/strategy.rb, line 16
def authenticate!
  ticket = read_ticket(params)
  if ticket
    if resource = mapping.to.authenticate_with_cas_ticket(ticket)
      # Store the ticket in the session for later usage
      if ::Devise.cas_enable_single_sign_out
        session['cas_last_valid_ticket'] = ticket.ticket
        session['cas_last_valid_ticket_store'] = true
      end

      success!(resource)
    elsif ticket.is_valid?
      username = ticket.respond_to?(:user) ? ticket.user : ticket.response.user
      redirect!(::Devise.cas_unregistered_url(request.url, mapping), :username => username)
      #fail!("The user #{ticket.response.user} is not registered with this site.  Please use a different account.")
    else
      fail!(:invalid)
    end
  else
    fail!(:invalid)
  end
end

# File lib/devise_cas_authenticatable/strategy.rb, line 7
def valid?
  mapping.to.respond_to?(:authenticate_with_cas_ticket) && params[:ticket]
end

# File lib/devise_cas_authenticatable/strategy.rb, line 41
def read_ticket(params)
  ticket = params[:ticket]
  return nil unless ticket
  
  service_url = ::Devise.cas_service_url(request.url, mapping)
  if ticket =~ /^PT-/
    ::CASClient::ProxyTicket.new(ticket, service_url, params[:renew])
  else
    ::CASClient::ServiceTicket.new(ticket, service_url, params[:renew])
  end
end