debian-mirror-gitlab/app/controllers/sessions_controller.rb

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# frozen_string_literal: true
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class SessionsController < Devise::SessionsController
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include InternalRedirect
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include AuthenticatesWithTwoFactor
include Devise::Controllers::Rememberable
include Recaptcha::ClientHelper
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include Recaptcha::Verify
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skip_before_action :check_two_factor_requirement, only: [:destroy]
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# replaced with :require_no_authentication_without_flash
skip_before_action :require_no_authentication, only: [:new, :create]
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prepend_before_action :check_initial_setup, only: [:new]
prepend_before_action :authenticate_with_two_factor,
if: :two_factor_enabled?, only: [:create]
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prepend_before_action :check_captcha, only: [:create]
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prepend_before_action :store_redirect_uri, only: [:new]
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prepend_before_action :ldap_servers, only: [:new, :create]
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prepend_before_action :require_no_authentication_without_flash, only: [:new, :create]
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prepend_before_action :ensure_password_authentication_enabled!, if: :password_based_login?, only: [:create]
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before_action :auto_sign_in_with_provider, only: [:new]
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before_action :store_unauthenticated_sessions, only: [:new]
before_action :save_failed_login, if: :action_new_and_failed_login?
before_action :load_recaptcha
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after_action :log_failed_login, if: :action_new_and_failed_login?
helper_method :captcha_enabled?, :captcha_on_login_required?
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helper_method :captcha_enabled?
CAPTCHA_HEADER = 'X-GitLab-Show-Login-Captcha'.freeze
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MAX_FAILED_LOGIN_ATTEMPTS = 5
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def new
set_minimum_password_length
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super
end
def create
super do |resource|
# User has successfully signed in, so clear any unused reset token
if resource.reset_password_token.present?
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resource.update(reset_password_token: nil,
reset_password_sent_at: nil)
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end
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# hide the signed-in notification
flash[:notice] = nil
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log_audit_event(current_user, resource, with: authentication_method)
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log_user_activity(current_user)
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end
end
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def destroy
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Gitlab::AppLogger.info("User Logout: username=#{current_user.username} ip=#{request.remote_ip}")
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super
# hide the signed_out notice
flash[:notice] = nil
end
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private
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def require_no_authentication_without_flash
require_no_authentication
if flash[:alert] == I18n.t('devise.failure.already_authenticated')
flash[:alert] = nil
end
end
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def captcha_enabled?
request.headers[CAPTCHA_HEADER] && Gitlab::Recaptcha.enabled?
end
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def captcha_on_login_required?
Gitlab::Recaptcha.enabled_on_login? && unverified_anonymous_user?
end
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# From https://github.com/plataformatec/devise/wiki/How-To:-Use-Recaptcha-with-Devise#devisepasswordscontroller
def check_captcha
return unless user_params[:password].present?
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return unless captcha_enabled? || captcha_on_login_required?
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return unless Gitlab::Recaptcha.load_configurations!
if verify_recaptcha
increment_successful_login_captcha_counter
else
increment_failed_login_captcha_counter
self.resource = resource_class.new
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flash[:alert] = _('There was an error with the reCAPTCHA. Please solve the reCAPTCHA again.')
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flash.delete :recaptcha_error
respond_with_navigational(resource) { render :new }
end
end
def increment_failed_login_captcha_counter
Gitlab::Metrics.counter(
:failed_login_captcha_total,
'Number of failed CAPTCHA attempts for logins'.freeze
).increment
end
def increment_successful_login_captcha_counter
Gitlab::Metrics.counter(
:successful_login_captcha_total,
'Number of successful CAPTCHA attempts for logins'.freeze
).increment
end
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##
# We do have some duplication between lib/gitlab/auth/activity.rb here, but
# leaving this method here because of backwards compatibility.
#
def login_counter
@login_counter ||= Gitlab::Metrics.counter(:user_session_logins_total, 'User sign in count')
end
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def log_failed_login
Gitlab::AppLogger.info("Failed Login: username=#{user_params[:login]} ip=#{request.remote_ip}")
end
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def action_new_and_failed_login?
action_name == 'new' && failed_login?
end
def save_failed_login
session[:failed_login_attempts] ||= 0
session[:failed_login_attempts] += 1
end
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def failed_login?
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(options = request.env["warden.options"]) && options[:action] == "unauthenticated"
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end
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# storing sessions per IP lets us check if there are associated multiple
# anonymous sessions with one IP and prevent situations when there are
# multiple attempts of logging in
def store_unauthenticated_sessions
return if current_user
Gitlab::AnonymousSession.new(request.remote_ip, session_id: request.session.id).store_session_id_per_ip
end
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# Handle an "initial setup" state, where there's only one user, it's an admin,
# and they require a password change.
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# rubocop: disable CodeReuse/ActiveRecord
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def check_initial_setup
return unless User.limit(2).count == 1 # Count as much 2 to know if we have exactly one
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user = User.admins.last
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return unless user && user.require_password_creation_for_web?
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Users::UpdateService.new(current_user, user: user).execute do |user|
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@token = user.generate_reset_token
end
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redirect_to edit_user_password_path(reset_password_token: @token),
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notice: _("Please create a password for your new account.")
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end
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# rubocop: enable CodeReuse/ActiveRecord
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def ensure_password_authentication_enabled!
render_403 unless Gitlab::CurrentSettings.password_authentication_enabled_for_web?
end
def password_based_login?
user_params[:login].present? || user_params[:password].present?
end
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def user_params
params.require(:user).permit(:login, :password, :remember_me, :otp_attempt, :device_response)
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end
def find_user
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if session[:otp_user_id]
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User.find(session[:otp_user_id])
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elsif user_params[:login]
User.by_login(user_params[:login])
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end
end
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def stored_redirect_uri
@redirect_to ||= stored_location_for(:redirect)
end
def store_redirect_uri
redirect_uri =
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if request.referer.present? && (params['redirect_to_referer'] == 'yes')
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URI(request.referer)
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else
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URI(request.url)
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end
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# Prevent a 'you are already signed in' message directly after signing:
# we should never redirect to '/users/sign_in' after signing in successfully.
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return true if redirect_uri.path == new_user_session_path
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redirect_to = redirect_uri.to_s if host_allowed?(redirect_uri)
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@redirect_to = redirect_to
store_location_for(:redirect, redirect_to)
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 auto_sign_in_with_provider
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return unless Gitlab::Auth.omniauth_enabled?
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provider = Gitlab.config.omniauth.auto_sign_in_with_provider
return unless provider.present?
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# If a "auto_sign_in" query parameter is set to a falsy value, don't auto sign-in.
# Otherwise, the default is to auto sign-in.
return if Gitlab::Utils.to_boolean(params[:auto_sign_in]) == false
# Auto sign in with an Omniauth provider only if the standard "you need to sign-in" alert is
# registered or no alert at all. In case of another alert (such as a blocked user), it is safer
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# to do nothing to prevent redirection loops with certain Omniauth providers.
return unless flash[:alert].blank? || flash[:alert] == I18n.t('devise.failure.unauthenticated')
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# Prevent alert from popping up on the first page shown after authentication.
flash[:alert] = nil
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redirect_to omniauth_authorize_path(:user, provider)
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end
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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end
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def log_audit_event(user, resource, options = {})
Gitlab::AppLogger.info("Successful Login: username=#{resource.username} ip=#{request.remote_ip} method=#{options[:with]} admin=#{resource.admin?}")
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AuditEventService.new(user, user, options)
.for_authentication.security_event
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end
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def log_user_activity(user)
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login_counter.increment
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Users::ActivityService.new(user, 'login').execute
end
def load_recaptcha
Gitlab::Recaptcha.load_configurations!
end
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def ldap_servers
@ldap_servers ||= Gitlab::Auth::LDAP::Config.available_servers
end
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def unverified_anonymous_user?
exceeded_failed_login_attempts? || exceeded_anonymous_sessions?
end
def exceeded_failed_login_attempts?
session.fetch(:failed_login_attempts, 0) > MAX_FAILED_LOGIN_ATTEMPTS
end
def exceeded_anonymous_sessions?
Gitlab::AnonymousSession.new(request.remote_ip).stored_sessions >= MAX_FAILED_LOGIN_ATTEMPTS
end
def authentication_method
if user_params[:otp_attempt]
"two-factor"
elsif user_params[:device_response]
"two-factor-via-u2f-device"
else
"standard"
end
end
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end