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# frozen_string_literal: true
# This concern is inspired by "sudo mode" on GitHub. It
# is a way to re-authenticate a user before allowing them
# to see or perform an action.
#
# Add `before_action :require_challenge!` to actions you
# want to protect.
#
# The user will be shown a page to enter the challenge (which
# is either the password, or just the username when no
# password exists). Upon passing, there is a grace period
# during which no challenge will be asked from the user.
#
# Accessing challenge-protected resources during the grace
# period will refresh the grace period.
module ChallengableConcern
extend ActiveSupport::Concern
CHALLENGE_TIMEOUT = 1.hour.freeze
def require_challenge!
return if skip_challenge?
if challenge_passed_recently?
session[:challenge_passed_at] = Time.now.utc
return
end
@challenge = Form::Challenge.new(return_to: request.url)
if params.key?(:form_challenge)
if challenge_passed?
session[:challenge_passed_at] = Time.now.utc
return
else
flash.now[:alert] = I18n.t('challenge.invalid_password')
render_challenge
end
else
render_challenge
end
end
def render_challenge
@body_classes = 'lighter'
render template: 'auth/challenges/new', layout: 'auth'
end
def challenge_passed?
current_user.valid_password?(challenge_params[:current_password])
end
def skip_challenge?
current_user.encrypted_password.blank?
end
def challenge_passed_recently?
session[:challenge_passed_at].present? && session[:challenge_passed_at] >= CHALLENGE_TIMEOUT.ago
end
def challenge_params
params.require(:form_challenge).permit(:current_password, :return_to)
end
end