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-rw-r--r--app/controllers/admin/two_factor_authentications_controller.rb1
-rw-r--r--app/controllers/auth/challenges_controller.rb22
-rw-r--r--app/controllers/auth/sessions_controller.rb1
-rw-r--r--app/controllers/concerns/challengable_concern.rb65
-rw-r--r--app/controllers/settings/two_factor_authentication/confirmations_controller.rb5
-rw-r--r--app/controllers/settings/two_factor_authentication/recovery_codes_controller.rb6
-rw-r--r--app/controllers/settings/two_factor_authentications_controller.rb4
-rw-r--r--app/javascript/styles/mastodon/admin.scss43
-rw-r--r--app/javascript/styles/mastodon/forms.scss4
-rw-r--r--app/mailers/user_mailer.rb33
-rw-r--r--app/models/form/challenge.rb8
-rw-r--r--app/models/user.rb9
-rw-r--r--app/views/auth/challenges/new.html.haml15
-rw-r--r--app/views/auth/shared/_links.html.haml2
-rw-r--r--app/views/settings/two_factor_authentications/show.html.haml38
-rw-r--r--app/views/user_mailer/two_factor_disabled.html.haml43
-rw-r--r--app/views/user_mailer/two_factor_disabled.text.erb7
-rw-r--r--app/views/user_mailer/two_factor_enabled.html.haml43
-rw-r--r--app/views/user_mailer/two_factor_enabled.text.erb7
-rw-r--r--app/views/user_mailer/two_factor_recovery_codes_changed.html.haml43
-rw-r--r--app/views/user_mailer/two_factor_recovery_codes_changed.text.erb7
21 files changed, 364 insertions, 42 deletions
diff --git a/app/controllers/admin/two_factor_authentications_controller.rb b/app/controllers/admin/two_factor_authentications_controller.rb
index 2577a4b17..0652c3a7a 100644
--- a/app/controllers/admin/two_factor_authentications_controller.rb
+++ b/app/controllers/admin/two_factor_authentications_controller.rb
@@ -8,6 +8,7 @@ module Admin
       authorize @user, :disable_2fa?
       @user.disable_two_factor!
       log_action :disable_2fa, @user
+      UserMailer.two_factor_disabled(@user).deliver_later!
       redirect_to admin_accounts_path
     end
 
diff --git a/app/controllers/auth/challenges_controller.rb b/app/controllers/auth/challenges_controller.rb
new file mode 100644
index 000000000..060944240
--- /dev/null
+++ b/app/controllers/auth/challenges_controller.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+class Auth::ChallengesController < ApplicationController
+  include ChallengableConcern
+
+  layout 'auth'
+
+  before_action :authenticate_user!
+
+  skip_before_action :require_functional!
+
+  def create
+    if challenge_passed?
+      session[:challenge_passed_at] = Time.now.utc
+      redirect_to challenge_params[:return_to]
+    else
+      @challenge = Form::Challenge.new(return_to: challenge_params[:return_to])
+      flash.now[:alert] = I18n.t('challenge.invalid_password')
+      render_challenge
+    end
+  end
+end
diff --git a/app/controllers/auth/sessions_controller.rb b/app/controllers/auth/sessions_controller.rb
index 3e93b2e68..b3113bbef 100644
--- a/app/controllers/auth/sessions_controller.rb
+++ b/app/controllers/auth/sessions_controller.rb
@@ -42,6 +42,7 @@ class Auth::SessionsController < Devise::SessionsController
   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
diff --git a/app/controllers/concerns/challengable_concern.rb b/app/controllers/concerns/challengable_concern.rb
new file mode 100644
index 000000000..b29d90b3c
--- /dev/null
+++ b/app/controllers/concerns/challengable_concern.rb
@@ -0,0 +1,65 @@
+# frozen_string_literal: true
+
+# This concern is inspired by "sudo mode" on GitHub. It
+# is a way to re-authenticate a user before allowing them
+# to see or perform an action.
+#
+# Add `before_action :require_challenge!` to actions you
+# want to protect.
+#
+# The user will be shown a page to enter the challenge (which
+# is either the password, or just the username when no
+# password exists). Upon passing, there is a grace period
+# during which no challenge will be asked from the user.
+#
+# Accessing challenge-protected resources during the grace
+# period will refresh the grace period.
+module ChallengableConcern
+  extend ActiveSupport::Concern
+
+  CHALLENGE_TIMEOUT = 1.hour.freeze
+
+  def require_challenge!
+    return if skip_challenge?
+
+    if challenge_passed_recently?
+      session[:challenge_passed_at] = Time.now.utc
+      return
+    end
+
+    @challenge = Form::Challenge.new(return_to: request.url)
+
+    if params.key?(:form_challenge)
+      if challenge_passed?
+        session[:challenge_passed_at] = Time.now.utc
+        return
+      else
+        flash.now[:alert] = I18n.t('challenge.invalid_password')
+        render_challenge
+      end
+    else
+      render_challenge
+    end
+  end
+
+  def render_challenge
+    @body_classes = 'lighter'
+    render template: 'auth/challenges/new', layout: 'auth'
+  end
+
+  def challenge_passed?
+    current_user.valid_password?(challenge_params[:current_password])
+  end
+
+  def skip_challenge?
+    current_user.encrypted_password.blank?
+  end
+
+  def challenge_passed_recently?
+    session[:challenge_passed_at].present? && session[:challenge_passed_at] >= CHALLENGE_TIMEOUT.ago
+  end
+
+  def challenge_params
+    params.require(:form_challenge).permit(:current_password, :return_to)
+  end
+end
diff --git a/app/controllers/settings/two_factor_authentication/confirmations_controller.rb b/app/controllers/settings/two_factor_authentication/confirmations_controller.rb
index 46c90bf74..ef4df3339 100644
--- a/app/controllers/settings/two_factor_authentication/confirmations_controller.rb
+++ b/app/controllers/settings/two_factor_authentication/confirmations_controller.rb
@@ -3,9 +3,12 @@
 module Settings
   module TwoFactorAuthentication
     class ConfirmationsController < BaseController
+      include ChallengableConcern
+
       layout 'admin'
 
       before_action :authenticate_user!
+      before_action :require_challenge!
       before_action :ensure_otp_secret
 
       skip_before_action :require_functional!
@@ -22,6 +25,8 @@ module Settings
           @recovery_codes = current_user.generate_otp_backup_codes!
           current_user.save!
 
+          UserMailer.two_factor_enabled(current_user).deliver_later!
+
           render 'settings/two_factor_authentication/recovery_codes/index'
         else
           flash.now[:alert] = I18n.t('two_factor_authentication.wrong_code')
diff --git a/app/controllers/settings/two_factor_authentication/recovery_codes_controller.rb b/app/controllers/settings/two_factor_authentication/recovery_codes_controller.rb
index 09a759860..0c4f5bff7 100644
--- a/app/controllers/settings/two_factor_authentication/recovery_codes_controller.rb
+++ b/app/controllers/settings/two_factor_authentication/recovery_codes_controller.rb
@@ -3,16 +3,22 @@
 module Settings
   module TwoFactorAuthentication
     class RecoveryCodesController < BaseController
+      include ChallengableConcern
+
       layout 'admin'
 
       before_action :authenticate_user!
+      before_action :require_challenge!, on: :create
 
       skip_before_action :require_functional!
 
       def create
         @recovery_codes = current_user.generate_otp_backup_codes!
         current_user.save!
+
+        UserMailer.two_factor_recovery_codes_changed(current_user).deliver_later!
         flash.now[:notice] = I18n.t('two_factor_authentication.recovery_codes_regenerated')
+
         render :index
       end
     end
diff --git a/app/controllers/settings/two_factor_authentications_controller.rb b/app/controllers/settings/two_factor_authentications_controller.rb
index c93b17577..9118a7933 100644
--- a/app/controllers/settings/two_factor_authentications_controller.rb
+++ b/app/controllers/settings/two_factor_authentications_controller.rb
@@ -2,10 +2,13 @@
 
 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!
 
@@ -23,6 +26,7 @@ module Settings
       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')
diff --git a/app/javascript/styles/mastodon/admin.scss b/app/javascript/styles/mastodon/admin.scss
index 5d4fe4ef8..074eee2cd 100644
--- a/app/javascript/styles/mastodon/admin.scss
+++ b/app/javascript/styles/mastodon/admin.scss
@@ -233,32 +233,35 @@ hr.spacer {
   height: 1px;
 }
 
-.muted-hint {
-  color: $darker-text-color;
+body,
+.admin-wrapper .content {
+  .muted-hint {
+    color: $darker-text-color;
 
-  a {
-    color: $highlight-text-color;
+    a {
+      color: $highlight-text-color;
+    }
   }
-}
 
-.positive-hint {
-  color: $valid-value-color;
-  font-weight: 500;
-}
+  .positive-hint {
+    color: $valid-value-color;
+    font-weight: 500;
+  }
 
-.negative-hint {
-  color: $error-value-color;
-  font-weight: 500;
-}
+  .negative-hint {
+    color: $error-value-color;
+    font-weight: 500;
+  }
 
-.neutral-hint {
-  color: $dark-text-color;
-  font-weight: 500;
-}
+  .neutral-hint {
+    color: $dark-text-color;
+    font-weight: 500;
+  }
 
-.warning-hint {
-  color: $gold-star;
-  font-weight: 500;
+  .warning-hint {
+    color: $gold-star;
+    font-weight: 500;
+  }
 }
 
 .filters {
diff --git a/app/javascript/styles/mastodon/forms.scss b/app/javascript/styles/mastodon/forms.scss
index 16352340b..80ef8797d 100644
--- a/app/javascript/styles/mastodon/forms.scss
+++ b/app/javascript/styles/mastodon/forms.scss
@@ -254,6 +254,10 @@ code {
       &-6 {
         max-width: 50%;
       }
+
+      .actions {
+        margin-top: 27px;
+      }
     }
 
     .fields-group:last-child,
diff --git a/app/mailers/user_mailer.rb b/app/mailers/user_mailer.rb
index b41004acc..6b81f6873 100644
--- a/app/mailers/user_mailer.rb
+++ b/app/mailers/user_mailer.rb
@@ -57,6 +57,39 @@ class UserMailer < Devise::Mailer
     end
   end
 
+  def two_factor_enabled(user, **)
+    @resource = user
+    @instance = Rails.configuration.x.local_domain
+
+    return if @resource.disabled?
+
+    I18n.with_locale(@resource.locale || I18n.default_locale) do
+      mail to: @resource.email, subject: I18n.t('devise.mailer.two_factor_enabled.subject')
+    end
+  end
+
+  def two_factor_disabled(user, **)
+    @resource = user
+    @instance = Rails.configuration.x.local_domain
+
+    return if @resource.disabled?
+
+    I18n.with_locale(@resource.locale || I18n.default_locale) do
+      mail to: @resource.email, subject: I18n.t('devise.mailer.two_factor_disabled.subject')
+    end
+  end
+
+  def two_factor_recovery_codes_changed(user, **)
+    @resource = user
+    @instance = Rails.configuration.x.local_domain
+
+    return if @resource.disabled?
+
+    I18n.with_locale(@resource.locale || I18n.default_locale) do
+      mail to: @resource.email, subject: I18n.t('devise.mailer.two_factor_recovery_codes_changed.subject')
+    end
+  end
+
   def welcome(user)
     @resource = user
     @instance = Rails.configuration.x.local_domain
diff --git a/app/models/form/challenge.rb b/app/models/form/challenge.rb
new file mode 100644
index 000000000..40c99649c
--- /dev/null
+++ b/app/models/form/challenge.rb
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+class Form::Challenge
+  include ActiveModel::Model
+
+  attr_accessor :current_password, :current_username,
+                :return_to
+end
diff --git a/app/models/user.rb b/app/models/user.rb
index 78b82a68f..b48455802 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -264,17 +264,20 @@ class User < ApplicationRecord
   end
 
   def password_required?
-    return false if Devise.pam_authentication || Devise.ldap_authentication
+    return false if external?
+
     super
   end
 
   def send_reset_password_instructions
-    return false if encrypted_password.blank? && (Devise.pam_authentication || Devise.ldap_authentication)
+    return false if encrypted_password.blank?
+
     super
   end
 
   def reset_password!(new_password, new_password_confirmation)
-    return false if encrypted_password.blank? && (Devise.pam_authentication || Devise.ldap_authentication)
+    return false if encrypted_password.blank?
+
     super
   end
 
diff --git a/app/views/auth/challenges/new.html.haml b/app/views/auth/challenges/new.html.haml
new file mode 100644
index 000000000..9aef2c35d
--- /dev/null
+++ b/app/views/auth/challenges/new.html.haml
@@ -0,0 +1,15 @@
+- content_for :page_title do
+  = t('challenge.prompt')
+
+= simple_form_for @challenge, url: request.get? ? auth_challenge_path : '' do |f|
+  = f.input :return_to, as: :hidden
+
+  .field-group
+    = f.input :current_password, wrapper: :with_block_label, input_html: { :autocomplete => 'off', :autofocus => true }, label: t('challenge.prompt'), required: true
+
+  .actions
+    = f.button :button, t('challenge.confirm'), type: :submit
+
+  %p.hint.subtle-hint= t('challenge.hint_html')
+
+.form-footer= render 'auth/shared/links'
diff --git a/app/views/auth/shared/_links.html.haml b/app/views/auth/shared/_links.html.haml
index e6c3f7cca..66ed5b93f 100644
--- a/app/views/auth/shared/_links.html.haml
+++ b/app/views/auth/shared/_links.html.haml
@@ -11,7 +11,7 @@
     - if controller_name != 'passwords' && controller_name != 'registrations'
       %li= link_to t('auth.forgot_password'), new_user_password_path
 
-  - if controller_name != 'confirmations'
+  - if controller_name != 'confirmations' && (!user_signed_in? || !current_user.confirmed? || current_user.unconfirmed_email.present?)
     %li= link_to t('auth.didnt_get_confirmation'), new_user_confirmation_path
 
   - if user_signed_in? && controller_name != 'setup'
diff --git a/app/views/settings/two_factor_authentications/show.html.haml b/app/views/settings/two_factor_authentications/show.html.haml
index 93509e022..f1eecd000 100644
--- a/app/views/settings/two_factor_authentications/show.html.haml
+++ b/app/views/settings/two_factor_authentications/show.html.haml
@@ -2,33 +2,35 @@
   = t('settings.two_factor_authentication')
 
 - if current_user.otp_required_for_login
-  %p.positive-hint
-    = fa_icon 'check'
-    = ' '
-    = t 'two_factor_authentication.enabled'
+  %p.hint
+    %span.positive-hint
+      = fa_icon 'check'
+      = ' '
+      = t 'two_factor_authentication.enabled'
 
-  %hr/
+  %hr.spacer/
 
   = simple_form_for @confirmation, url: settings_two_factor_authentication_path, method: :delete do |f|
-    = f.input :otp_attempt, wrapper: :with_label, hint: t('two_factor_authentication.code_hint'), label: t('simple_form.labels.defaults.otp_attempt'), input_html: { :autocomplete => 'off' }, required: true
+    .fields-group
+      = f.input :otp_attempt, wrapper: :with_block_label, hint: t('two_factor_authentication.code_hint'), label: t('simple_form.labels.defaults.otp_attempt'), input_html: { :autocomplete => 'off' }, required: true
 
     .actions
-      = f.button :button, t('two_factor_authentication.disable'), type: :submit
+      = f.button :button, t('two_factor_authentication.disable'), type: :submit, class: 'negative'
 
-  %hr/
+  %hr.spacer/
 
-  %h6= t('two_factor_authentication.recovery_codes')
-  %p.muted-hint
-    = t('two_factor_authentication.lost_recovery_codes')
-    = link_to t('two_factor_authentication.generate_recovery_codes'),
-      settings_two_factor_authentication_recovery_codes_path,
-      data: { method: :post }
+  %h3= t('two_factor_authentication.recovery_codes')
+  %p.muted-hint= t('two_factor_authentication.lost_recovery_codes')
+
+  %hr.spacer/
+
+  .simple_form
+    = link_to t('two_factor_authentication.generate_recovery_codes'), settings_two_factor_authentication_recovery_codes_path, data: { method: :post }, class: 'block-button'
 
 - else
   .simple_form
     %p.hint= t('two_factor_authentication.description_html')
 
-    = link_to t('two_factor_authentication.setup'),
-      settings_two_factor_authentication_path,
-      data: { method: :post },
-      class: 'block-button'
+    %hr.spacer/
+
+    = link_to t('two_factor_authentication.setup'), settings_two_factor_authentication_path, data: { method: :post }, class: 'block-button'
diff --git a/app/views/user_mailer/two_factor_disabled.html.haml b/app/views/user_mailer/two_factor_disabled.html.haml
new file mode 100644
index 000000000..651c6f940
--- /dev/null
+++ b/app/views/user_mailer/two_factor_disabled.html.haml
@@ -0,0 +1,43 @@
+%table.email-table{ cellspacing: 0, cellpadding: 0 }
+  %tbody
+    %tr
+      %td.email-body
+        .email-container
+          %table.content-section{ cellspacing: 0, cellpadding: 0 }
+            %tbody
+              %tr
+                %td.content-cell.hero
+                  .email-row
+                    .col-6
+                      %table.column{ cellspacing: 0, cellpadding: 0 }
+                        %tbody
+                          %tr
+                            %td.column-cell.text-center.padded
+                              %table.hero-icon.alert-icon{ align: 'center', cellspacing: 0, cellpadding: 0 }
+                                %tbody
+                                  %tr
+                                    %td
+                                      = image_tag full_pack_url('media/images/mailer/icon_lock_open.png'), alt: ''
+
+                              %h1= t 'devise.mailer.two_factor_disabled.title'
+                              %p.lead= t 'devise.mailer.two_factor_disabled.explanation'
+
+%table.email-table{ cellspacing: 0, cellpadding: 0 }
+  %tbody
+    %tr
+      %td.email-body
+        .email-container
+          %table.content-section{ cellspacing: 0, cellpadding: 0 }
+            %tbody
+              %tr
+                %td.content-cell.content-start
+                  %table.column{ cellspacing: 0, cellpadding: 0 }
+                    %tbody
+                      %tr
+                        %td.column-cell.button-cell
+                          %table.button{ align: 'center', cellspacing: 0, cellpadding: 0 }
+                            %tbody
+                              %tr
+                                %td.button-primary
+                                  = link_to edit_user_registration_url do
+                                    %span= t('settings.account_settings')
diff --git a/app/views/user_mailer/two_factor_disabled.text.erb b/app/views/user_mailer/two_factor_disabled.text.erb
new file mode 100644
index 000000000..73be1ddc2
--- /dev/null
+++ b/app/views/user_mailer/two_factor_disabled.text.erb
@@ -0,0 +1,7 @@
+<%= t 'devise.mailer.two_factor_disabled.title' %>
+
+===
+
+<%= t 'devise.mailer.two_factor_disabled.explanation' %>
+
+=> <%= edit_user_registration_url %>
diff --git a/app/views/user_mailer/two_factor_enabled.html.haml b/app/views/user_mailer/two_factor_enabled.html.haml
new file mode 100644
index 000000000..fc31bd979
--- /dev/null
+++ b/app/views/user_mailer/two_factor_enabled.html.haml
@@ -0,0 +1,43 @@
+%table.email-table{ cellspacing: 0, cellpadding: 0 }
+  %tbody
+    %tr
+      %td.email-body
+        .email-container
+          %table.content-section{ cellspacing: 0, cellpadding: 0 }
+            %tbody
+              %tr
+                %td.content-cell.hero
+                  .email-row
+                    .col-6
+                      %table.column{ cellspacing: 0, cellpadding: 0 }
+                        %tbody
+                          %tr
+                            %td.column-cell.text-center.padded
+                              %table.hero-icon{ align: 'center', cellspacing: 0, cellpadding: 0 }
+                                %tbody
+                                  %tr
+                                    %td
+                                      = image_tag full_pack_url('media/images/mailer/icon_lock_open.png'), alt: ''
+
+                              %h1= t 'devise.mailer.two_factor_enabled.title'
+                              %p.lead= t 'devise.mailer.two_factor_enabled.explanation'
+
+%table.email-table{ cellspacing: 0, cellpadding: 0 }
+  %tbody
+    %tr
+      %td.email-body
+        .email-container
+          %table.content-section{ cellspacing: 0, cellpadding: 0 }
+            %tbody
+              %tr
+                %td.content-cell.content-start
+                  %table.column{ cellspacing: 0, cellpadding: 0 }
+                    %tbody
+                      %tr
+                        %td.column-cell.button-cell
+                          %table.button{ align: 'center', cellspacing: 0, cellpadding: 0 }
+                            %tbody
+                              %tr
+                                %td.button-primary
+                                  = link_to edit_user_registration_url do
+                                    %span= t('settings.account_settings')
diff --git a/app/views/user_mailer/two_factor_enabled.text.erb b/app/views/user_mailer/two_factor_enabled.text.erb
new file mode 100644
index 000000000..4319dddbf
--- /dev/null
+++ b/app/views/user_mailer/two_factor_enabled.text.erb
@@ -0,0 +1,7 @@
+<%= t 'devise.mailer.two_factor_enabled.title' %>
+
+===
+
+<%= t 'devise.mailer.two_factor_enabled.explanation' %>
+
+=> <%= edit_user_registration_url %>
diff --git a/app/views/user_mailer/two_factor_recovery_codes_changed.html.haml b/app/views/user_mailer/two_factor_recovery_codes_changed.html.haml
new file mode 100644
index 000000000..833708868
--- /dev/null
+++ b/app/views/user_mailer/two_factor_recovery_codes_changed.html.haml
@@ -0,0 +1,43 @@
+%table.email-table{ cellspacing: 0, cellpadding: 0 }
+  %tbody
+    %tr
+      %td.email-body
+        .email-container
+          %table.content-section{ cellspacing: 0, cellpadding: 0 }
+            %tbody
+              %tr
+                %td.content-cell.hero
+                  .email-row
+                    .col-6
+                      %table.column{ cellspacing: 0, cellpadding: 0 }
+                        %tbody
+                          %tr
+                            %td.column-cell.text-center.padded
+                              %table.hero-icon.alert-icon{ align: 'center', cellspacing: 0, cellpadding: 0 }
+                                %tbody
+                                  %tr
+                                    %td
+                                      = image_tag full_pack_url('media/images/mailer/icon_lock_open.png'), alt: ''
+
+                              %h1= t 'devise.mailer.two_factor_recovery_codes_changed.title'
+                              %p.lead= t 'devise.mailer.two_factor_recovery_codes_changed.explanation'
+
+%table.email-table{ cellspacing: 0, cellpadding: 0 }
+  %tbody
+    %tr
+      %td.email-body
+        .email-container
+          %table.content-section{ cellspacing: 0, cellpadding: 0 }
+            %tbody
+              %tr
+                %td.content-cell.content-start
+                  %table.column{ cellspacing: 0, cellpadding: 0 }
+                    %tbody
+                      %tr
+                        %td.column-cell.button-cell
+                          %table.button{ align: 'center', cellspacing: 0, cellpadding: 0 }
+                            %tbody
+                              %tr
+                                %td.button-primary
+                                  = link_to edit_user_registration_url do
+                                    %span= t('settings.account_settings')
diff --git a/app/views/user_mailer/two_factor_recovery_codes_changed.text.erb b/app/views/user_mailer/two_factor_recovery_codes_changed.text.erb
new file mode 100644
index 000000000..6ed12fc08
--- /dev/null
+++ b/app/views/user_mailer/two_factor_recovery_codes_changed.text.erb
@@ -0,0 +1,7 @@
+<%= t 'devise.mailer.two_factor_recovery_codes_changed.title' %>
+
+===
+
+<%= t 'devise.mailer.two_factor_recovery_codes_changed.explanation' %>
+
+=> <%= edit_user_registration_url %>