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If someone tries logging in to an account and is prompted for a 2FA code or sign-in token, even if the account's password or e-mail is updated in the meantime, the session will show the prompt and allow the login process to complete with a valid 2FA code or sign-in token
91 lines
2.6 KiB
Ruby
91 lines
2.6 KiB
Ruby
# frozen_string_literal: true
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module TwoFactorAuthenticationConcern
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extend ActiveSupport::Concern
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included do
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prepend_before_action :authenticate_with_two_factor, if: :two_factor_enabled?, only: [:create]
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end
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def two_factor_enabled?
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find_user&.two_factor_enabled?
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end
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def valid_webauthn_credential?(user, webauthn_credential)
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user_credential = user.webauthn_credentials.find_by!(external_id: webauthn_credential.id)
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begin
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webauthn_credential.verify(
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session[:webauthn_challenge],
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public_key: user_credential.public_key,
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sign_count: user_credential.sign_count
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)
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user_credential.update!(sign_count: webauthn_credential.sign_count)
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rescue WebAuthn::Error
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false
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end
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end
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def valid_otp_attempt?(user)
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user.validate_and_consume_otp!(user_params[:otp_attempt]) ||
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user.invalidate_otp_backup_code!(user_params[:otp_attempt])
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rescue OpenSSL::Cipher::CipherError
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false
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end
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def authenticate_with_two_factor
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user = self.resource = find_user
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if user.present? && session[:attempt_user_id].present? && session[:attempt_user_updated_at] != user.updated_at.to_s
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restart_session
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elsif user.webauthn_enabled? && user_params.key?(:credential) && session[:attempt_user_id]
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authenticate_with_two_factor_via_webauthn(user)
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elsif user_params.key?(:otp_attempt) && session[:attempt_user_id]
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authenticate_with_two_factor_via_otp(user)
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elsif user.present? && user.external_or_valid_password?(user_params[:password])
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prompt_for_two_factor(user)
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end
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end
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def authenticate_with_two_factor_via_webauthn(user)
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webauthn_credential = WebAuthn::Credential.from_get(user_params[:credential])
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if valid_webauthn_credential?(user, webauthn_credential)
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clear_attempt_from_session
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remember_me(user)
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sign_in(user)
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render json: { redirect_path: root_path }, status: :ok
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else
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render json: { error: t('webauthn_credentials.invalid_credential') }, status: :unprocessable_entity
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end
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end
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def authenticate_with_two_factor_via_otp(user)
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if valid_otp_attempt?(user)
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clear_attempt_from_session
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remember_me(user)
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sign_in(user)
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else
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flash.now[:alert] = I18n.t('users.invalid_otp_token')
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prompt_for_two_factor(user)
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end
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end
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def prompt_for_two_factor(user)
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set_attempt_session(user)
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@body_classes = 'lighter'
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@webauthn_enabled = user.webauthn_enabled?
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@scheme_type = begin
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if user.webauthn_enabled? && user_params[:otp_attempt].blank?
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'webauthn'
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else
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'totp'
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end
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end
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set_locale { render :two_factor }
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end
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end
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