summaryrefslogtreecommitdiff
path: root/app/controllers/sessions_controller.rb
blob: 8c698695202681347dcc3e332a3df2c1929a7f4d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
class SessionsController < Devise::SessionsController
  include AuthenticatesWithTwoFactor
  include Devise::Controllers::Rememberable
  include Recaptcha::ClientHelper

  skip_before_action :check_2fa_requirement, only: [:destroy]

  prepend_before_action :check_initial_setup, only: [:new]
  prepend_before_action :authenticate_with_two_factor,
    if: :two_factor_enabled?, only: [:create]
  prepend_before_action :store_redirect_path, only: [:new]

  before_action :auto_sign_in_with_provider, only: [:new]
  before_action :load_recaptcha

  def new
    set_minimum_password_length
    if Gitlab.config.ldap.enabled
      @ldap_servers = Gitlab::LDAP::Config.servers
    else
      @ldap_servers = []
    end

    super
  end

  def create
    super do |resource|
      # User has successfully signed in, so clear any unused reset token
      if resource.reset_password_token.present?
        resource.update_attributes(reset_password_token: nil,
                                   reset_password_sent_at: nil)
      end
      # hide the signed-in notification
      flash[:notice] = nil
      log_audit_event(current_user, with: authentication_method)
    end
  end

  def destroy
    super
    # hide the signed_out notice
    flash[:notice] = nil
  end

  private

  # Handle an "initial setup" state, where there's only one user, it's an admin,
  # and they require a password change.
  def check_initial_setup
    return unless User.limit(2).count == 1 # Count as much 2 to know if we have exactly one

    user = User.admins.last

    return unless user && user.require_password?

    token = user.generate_reset_token
    user.save

    redirect_to edit_user_password_path(reset_password_token: token),
      notice: "Please create a password for your new account."
  end

  def user_params
    params.require(:user).permit(:login, :password, :remember_me, :otp_attempt, :device_response)
  end

  def find_user
    if session[:otp_user_id]
      User.find(session[:otp_user_id])
    elsif user_params[:login]
      User.by_login(user_params[:login])
    end
  end

  def store_redirect_path
    redirect_path =
      if request.referer.present? && (params['redirect_to_referer'] == 'yes')
        referer_uri = URI(request.referer)
        if referer_uri.host == Gitlab.config.gitlab.host
          referer_uri.path
        else
          request.fullpath
        end
      else
        request.fullpath
      end

    # Prevent a 'you are already signed in' message directly after signing:
    # we should never redirect to '/users/sign_in' after signing in successfully.
    unless redirect_path == new_user_session_path
      store_location_for(:redirect, redirect_path)
    end
  end

  def two_factor_enabled?
    find_user.try(:two_factor_enabled?)
  end

  def auto_sign_in_with_provider
    provider = Gitlab.config.omniauth.auto_sign_in_with_provider
    return unless provider.present?

    # 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
    # to do nothing to prevent redirection loops with certain Omniauth providers.
    return unless flash[:alert].blank? || flash[:alert] == I18n.t('devise.failure.unauthenticated')

    # Prevent alert from popping up on the first page shown after authentication.
    flash[:alert] = nil

    redirect_to omniauth_authorize_path(:user, provider)
  end

  def valid_otp_attempt?(user)
    user.validate_and_consume_otp!(user_params[:otp_attempt]) ||
    user.invalidate_otp_backup_code!(user_params[:otp_attempt])
  end

  def log_audit_event(user, options = {})
    AuditEventService.new(user, user, options).
      for_authentication.security_event
  end

  def load_recaptcha
    Gitlab::Recaptcha.load_configurations!
  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
end