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mastodon/app/controllers/auth/sessions_controller.rb

197 lines
5.1 KiB
Ruby

# frozen_string_literal: true
class Auth::SessionsController < Devise::SessionsController
include Redisable
MAX_2FA_ATTEMPTS_PER_HOUR = 10
layout 'auth'
skip_before_action :check_self_destruct!
skip_before_action :require_no_authentication, only: [:create]
skip_before_action :require_functional!
skip_before_action :update_user_sign_in
prepend_before_action :check_suspicious!, only: [:create]
include Auth::TwoFactorAuthenticationConcern
before_action :set_body_classes
content_security_policy only: :new do |p|
p.form_action(false)
end
def check_suspicious!
user = find_user
@login_is_suspicious = suspicious_sign_in?(user) unless user.nil?
end
def create
super do |resource|
# We only need to call this if this hasn't already been
# called from one of the two-factor or sign-in token
# authentication methods
on_authentication_success(resource, :password) unless @on_authentication_success_called
end
end
def destroy
tmp_stored_location = stored_location_for(:user)
super
session.delete(:challenge_passed_at)
flash.delete(:notice)
store_location_for(:user, tmp_stored_location) if continue_after?
end
def webauthn_options
user = User.find_by(id: session[:attempt_user_id])
if user&.webauthn_enabled?
options_for_get = WebAuthn::Credential.options_for_get(
allow: user.webauthn_credentials.pluck(:external_id),
user_verification: 'discouraged'
)
session[:webauthn_challenge] = options_for_get.challenge
render json: options_for_get, status: 200
else
render json: { error: t('webauthn_credentials.not_enabled') }, status: 401
end
end
protected
def find_user
if user_params[:email].present?
find_user_from_params
elsif session[:attempt_user_id]
User.find_by(id: session[:attempt_user_id])
end
end
def find_user_from_params
user = User.authenticate_with_ldap(user_params) if Devise.ldap_authentication
user ||= User.authenticate_with_pam(user_params) if Devise.pam_authentication
user ||= User.find_for_authentication(email: user_params[:email])
user
end
def user_params
params.require(:user).permit(:email, :password, :otp_attempt, credential: {})
end
def after_sign_in_path_for(resource)
last_url = stored_location_for(:user)
if home_paths(resource).include?(last_url)
root_path
else
last_url || root_path
end
end
def require_no_authentication
super
# Delete flash message that isn't entirely useful and may be confusing in
# most cases because /web doesn't display/clear flash messages.
flash.delete(:alert) if flash[:alert] == I18n.t('devise.failure.already_authenticated')
end
private
def set_body_classes
@body_classes = 'lighter'
end
def home_paths(resource)
paths = [about_path, '/explore']
paths << short_account_path(username: resource.account) if single_user_mode? && resource.is_a?(User)
paths
end
def continue_after?
truthy_param?(:continue)
end
def restart_session
clear_attempt_from_session
redirect_to new_user_session_path, alert: I18n.t('devise.failure.timeout')
end
def register_attempt_in_session(user)
session[:attempt_user_id] = user.id
session[:attempt_user_updated_at] = user.updated_at.to_s
end
def clear_attempt_from_session
session.delete(:attempt_user_id)
session.delete(:attempt_user_updated_at)
end
def clear_2fa_attempt_from_user(user)
redis.del(second_factor_attempts_key(user))
end
def check_second_factor_rate_limits(user)
attempts, = redis.multi do |multi|
multi.incr(second_factor_attempts_key(user))
multi.expire(second_factor_attempts_key(user), 1.hour)
end
attempts >= MAX_2FA_ATTEMPTS_PER_HOUR
end
def on_authentication_success(user, security_measure)
@on_authentication_success_called = true
clear_2fa_attempt_from_user(user)
clear_attempt_from_session
user.update_sign_in!(new_sign_in: true)
sign_in(user)
flash.delete(:notice)
LoginActivity.create(
user: user,
success: true,
authentication_method: security_measure,
ip: request.remote_ip,
user_agent: request.user_agent
)
UserMailer.suspicious_sign_in(user, request.remote_ip, request.user_agent, Time.now.utc).deliver_later! if @login_is_suspicious
end
def suspicious_sign_in?(user)
SuspiciousSignInDetector.new(user).suspicious?(request)
end
def on_authentication_failure(user, security_measure, failure_reason)
LoginActivity.create(
user: user,
success: false,
authentication_method: security_measure,
failure_reason: failure_reason,
ip: request.remote_ip,
user_agent: request.user_agent
)
# Only send a notification email every hour at most
return if redis.get("2fa_failure_notification:#{user.id}").present?
redis.set("2fa_failure_notification:#{user.id}", '1', ex: 1.hour)
UserMailer.failed_2fa(user, request.remote_ip, request.user_agent, Time.now.utc).deliver_later!
end
def second_factor_attempts_key(user)
"2fa_auth_attempts:#{user.id}:#{Time.now.utc.hour}"
end
end