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Add WebAuthn as an alternative 2FA method (#14466)

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* feat: add possibility of adding WebAuthn security keys to use as 2FA

This adds a basic UI for enabling WebAuthn 2FA. We did a little refactor
to the Settings page for editing the 2FA methods – now it will list the
methods that are available to the user (TOTP and WebAuthn) and from
there they'll be able to add or remove any of them.
Also, it's worth mentioning that for enabling WebAuthn it's required to
have TOTP enabled, so the first time that you go to the 2FA Settings
page, you'll be asked to set it up.
This work was inspired by the one donde by Github in their platform, and
despite it could be approached in different ways, we decided to go with
this one given that we feel that this gives a great UX.

Co-authored-by: Facundo Padula <facundo.padula@cedarcode.com>

* feat: add request for WebAuthn as second factor at login if enabled

This commits adds the feature for using WebAuthn as a second factor for
login when enabled.
If users have WebAuthn enabled, now a page requesting for the use of a
WebAuthn credential for log in will appear, although a link redirecting
to the old page for logging in using a two-factor code will also be
present.

Co-authored-by: Facundo Padula <facundo.padula@cedarcode.com>

* feat: add possibility of deleting WebAuthn Credentials

Co-authored-by: Facundo Padula <facundo.padula@cedarcode.com>

* feat: disable WebAuthn when an Admin disables 2FA for a user

Co-authored-by: Facundo Padula <facundo.padula@cedarcode.com>

* feat: remove ability to disable TOTP leaving only WebAuthn as 2FA

Following examples form other platforms like Github, we decided to make
Webauthn 2FA secondary to 2FA with TOTP, so that we removed the
possibility of removing TOTP authentication only, leaving users with
just WEbAuthn as 2FA. Instead, users will have to click on 'Disable 2FA'
in order to remove second factor auth.
The reason for WebAuthn being secondary to TOPT is that in that way,
users will still be able to log in using their code from their phone's
application if they don't have their security keys with them – or maybe
even lost them.

* We had to change a little the flow for setting up TOTP, given that now
  it's possible to setting up again if you already had TOTP, in order to
  let users modify their authenticator app – given that now it's not
  possible for them to disable TOTP and set it up again with another
  authenticator app.
  So, basically, now instead of storing the new `otp_secret` in the
  user, we store it in the session until the process of set up is
  finished.
  This was because, as it was before, when users clicked on 'Edit' in
  the new two-factor methods lists page, but then went back without
  finishing the flow, their `otp_secret` had been changed therefore
  invalidating their previous authenticator app, making them unable to
  log in again using TOTP.

Co-authored-by: Facundo Padula <facundo.padula@cedarcode.com>

* refactor: fix eslint errors

The PR build was failing given that linting returning some errors.
This commit attempts to fix them.

* refactor: normalize i18n translations

The build was failing given that i18n translations files were not
normalized.
This commits fixes that.

* refactor: avoid having the webauthn gem locked to a specific version

* refactor: use symbols for routes without '/'

* refactor: avoid sending webauthn disabled email when 2FA is disabled

When an admins disable 2FA for users, we were sending two mails
to them, one notifying that 2FA was disabled and the other to notify
that WebAuthn was disabled.
As the second one is redundant since the first email includes it, we can
remove it and send just one email to users.

* refactor: avoid creating new env variable for webauthn_origin config

* refactor: improve flash error messages for webauthn pages

Co-authored-by: Facundo Padula <facundo.padula@cedarcode.com>
This commit is contained in:
santiagorodriguez96 2020-08-24 11:46:27 -03:00 • committed by GitHub
parent a3ec9af9b0
commit e8d41bc2fe
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53 changed files with 1851 additions and 395 deletions
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14
app/controllers/settings/two_factor_authentication/confirmations_controller.rb
View file

@ -18,18 +18,21 @@ module Settings
end
def create
if current_user.validate_and_consume_otp!(confirmation_params[:otp_attempt])
if current_user.validate_and_consume_otp!(confirmation_params[:otp_attempt], otp_secret: session[:new_otp_secret])
flash.now[:notice] = I18n.t('two_factor_authentication.enabled_success')
current_user.otp_required_for_login = true
current_user.otp_secret = session[:new_otp_secret]
@recovery_codes = current_user.generate_otp_backup_codes!
current_user.save!
UserMailer.two_factor_enabled(current_user).deliver_later!
session.delete(:new_otp_secret)
render 'settings/two_factor_authentication/recovery_codes/index'
else
flash.now[:alert] = I18n.t('two_factor_authentication.wrong_code')
flash.now[:alert] = I18n.t('otp_authentication.wrong_code')
prepare_two_factor_form
render :new
end
@ -43,12 +46,15 @@ module Settings
def prepare_two_factor_form
@confirmation = Form::TwoFactorConfirmation.new
@provision_url = current_user.otp_provisioning_uri(current_user.email, issuer: Rails.configuration.x.local_domain)
@new_otp_secret = session[:new_otp_secret]
@provision_url = current_user.otp_provisioning_uri(current_user.email,
otp_secret: @new_otp_secret,
issuer: Rails.configuration.x.local_domain)
@qrcode = RQRCode::QRCode.new(@provision_url)
end
def ensure_otp_secret
redirect_to settings_two_factor_authentication_path unless current_user.otp_secret
redirect_to settings_otp_authentication_path if session[:new_otp_secret].blank?
end
end
end

42
app/controllers/settings/two_factor_authentication/otp_authentication_controller.rb Normal file
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@ -0,0 +1,42 @@
# frozen_string_literal: true
module Settings
module TwoFactorAuthentication
class OtpAuthenticationController < BaseController
include ChallengableConcern
layout 'admin'
before_action :authenticate_user!
before_action :verify_otp_not_enabled, only: [:show]
before_action :require_challenge!, only: [:create]
skip_before_action :require_functional!
def show
@confirmation = Form::TwoFactorConfirmation.new
end
def create
session[:new_otp_secret] = User.generate_otp_secret(32)
redirect_to new_settings_two_factor_authentication_confirmation_path
end
private
def confirmation_params
params.require(:form_two_factor_confirmation).permit(:otp_attempt)
end
def verify_otp_not_enabled
redirect_to settings_two_factor_authentication_methods_path if current_user.otp_enabled?
end
def acceptable_code?
current_user.validate_and_consume_otp!(confirmation_params[:otp_attempt]) ||
current_user.invalidate_otp_backup_code!(confirmation_params[:otp_attempt])
end
end
end
end

103
app/controllers/settings/two_factor_authentication/webauthn_credentials_controller.rb Normal file
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@ -0,0 +1,103 @@
# frozen_string_literal: true
module Settings
module TwoFactorAuthentication
class WebauthnCredentialsController < BaseController
layout 'admin'
before_action :authenticate_user!
before_action :require_otp_enabled
before_action :require_webauthn_enabled, only: [:index, :destroy]
def new; end
def index; end
def options
current_user.update(webauthn_id: WebAuthn.generate_user_id) unless current_user.webauthn_id
options_for_create = WebAuthn::Credential.options_for_create(
user: {
name: current_user.account.username,
display_name: current_user.account.username,
id: current_user.webauthn_id,
},
exclude: current_user.webauthn_credentials.pluck(:external_id)
)
session[:webauthn_challenge] = options_for_create.challenge
render json: options_for_create, status: :ok
end
def create
webauthn_credential = WebAuthn::Credential.from_create(params[:credential])
if webauthn_credential.verify(session[:webauthn_challenge])
user_credential = current_user.webauthn_credentials.build(
external_id: webauthn_credential.id,
public_key: webauthn_credential.public_key,
nickname: params[:nickname],
sign_count: webauthn_credential.sign_count
)
if user_credential.save
flash[:success] = I18n.t('webauthn_credentials.create.success')
status = :ok
if current_user.webauthn_credentials.size == 1
UserMailer.webauthn_enabled(current_user).deliver_later!
else
UserMailer.webauthn_credential_added(current_user, user_credential).deliver_later!
end
else
flash[:error] = I18n.t('webauthn_credentials.create.error')
status = :internal_server_error
end
else
flash[:error] = t('webauthn_credentials.create.error')
status = :unauthorized
end
render json: { redirect_path: settings_two_factor_authentication_methods_path }, status: status
end
def destroy
credential = current_user.webauthn_credentials.find_by(id: params[:id])
if credential
credential.destroy
if credential.destroyed?
flash[:success] = I18n.t('webauthn_credentials.destroy.success')
if current_user.webauthn_credentials.empty?
UserMailer.webauthn_disabled(current_user).deliver_later!
else
UserMailer.webauthn_credential_deleted(current_user, credential).deliver_later!
end
else
flash[:error] = I18n.t('webauthn_credentials.destroy.error')
end
else
flash[:error] = I18n.t('webauthn_credentials.destroy.error')
end
redirect_to settings_two_factor_authentication_methods_path
end
private
def require_otp_enabled
unless current_user.otp_enabled?
flash[:error] = t('webauthn_credentials.otp_required')
redirect_to settings_two_factor_authentication_methods_path
end
end
def require_webauthn_enabled
unless current_user.webauthn_enabled?
flash[:error] = t('webauthn_credentials.not_enabled')
redirect_to settings_two_factor_authentication_methods_path
end
end
end
end
end

30
app/controllers/settings/two_factor_authentication_methods_controller.rb Normal file
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@ -0,0 +1,30 @@
# frozen_string_literal: true
module Settings
class TwoFactorAuthenticationMethodsController < BaseController
include ChallengableConcern
layout 'admin'
before_action :authenticate_user!
before_action :require_challenge!, only: :disable
before_action :require_otp_enabled
skip_before_action :require_functional!
def index; end
def disable
current_user.disable_two_factor!
UserMailer.two_factor_disabled(current_user).deliver_later!
redirect_to settings_otp_authentication_path, flash: { notice: I18n.t('two_factor_authentication.disabled_success') }
end
private
def require_otp_enabled
redirect_to settings_otp_authentication_path unless current_user.otp_enabled?
end
end
end

53
app/controllers/settings/two_factor_authentications_controller.rb
View file

@ -1,53 +0,0 @@
# frozen_string_literal: true
module Settings
class TwoFactorAuthenticationsController < BaseController
include ChallengableConcern
layout 'admin'
before_action :authenticate_user!
before_action :verify_otp_required, only: [:create]
before_action :require_challenge!, only: [:create]
skip_before_action :require_functional!
def show
@confirmation = Form::TwoFactorConfirmation.new
end
def create
current_user.otp_secret = User.generate_otp_secret(32)
current_user.save!
redirect_to new_settings_two_factor_authentication_confirmation_path
end
def destroy
if acceptable_code?
current_user.otp_required_for_login = false
current_user.save!
UserMailer.two_factor_disabled(current_user).deliver_later!
redirect_to settings_two_factor_authentication_path
else
flash.now[:alert] = I18n.t('two_factor_authentication.wrong_code')
@confirmation = Form::TwoFactorConfirmation.new
render :show
end
end
private
def confirmation_params
params.require(:form_two_factor_confirmation).permit(:otp_attempt)
end
def verify_otp_required
redirect_to settings_two_factor_authentication_path if current_user.otp_required_for_login?
end
def acceptable_code?
current_user.validate_and_consume_otp!(confirmation_params[:otp_attempt]) ||
current_user.invalidate_otp_backup_code!(confirmation_params[:otp_attempt])
end
end
end