Add option to opt out of search engines on public profile/status pages (#4199)

11 files changed, 30 insertions, 0 deletions

diff --git a/app/controllers/settings/preferences_controller.rb b/app/controllers/settings/preferences_controller.rb
index cac5b0ba8..a3f5a008b 100644
--- a/app/controllers/settings/preferences_controller.rb
+++ b/app/controllers/settings/preferences_controller.rb
@@ -39,6 +39,7 @@ class Settings::PreferencesController < ApplicationController
       :setting_delete_modal,
       :setting_auto_play_gif,
       :setting_system_font_ui,
+      :setting_noindex,
       notification_emails: %i(follow follow_request reblog favourite mention digest),
       interactions: %i(must_be_follower must_be_following)
     )
diff --git a/app/lib/user_settings_decorator.rb b/app/lib/user_settings_decorator.rb
index e0e92b19d..c5da18029 100644
--- a/app/lib/user_settings_decorator.rb
+++ b/app/lib/user_settings_decorator.rb
@@ -23,6 +23,7 @@ class UserSettingsDecorator
     user.settings['delete_modal'] = delete_modal_preference
     user.settings['auto_play_gif'] = auto_play_gif_preference
     user.settings['system_font_ui'] = system_font_ui_preference
+    user.settings['noindex'] = noindex_preference
   end
 
   def merged_notification_emails
@@ -57,6 +58,10 @@ class UserSettingsDecorator
     boolean_cast_setting 'setting_auto_play_gif'
   end
 
+  def noindex_preference
+    boolean_cast_setting 'setting_noindex'
+  end
+
   def boolean_cast_setting(key)
     settings[key] == '1'
   end
diff --git a/app/models/user.rb b/app/models/user.rb
index a63b1da7f..becf0018f 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -99,6 +99,10 @@ class User < ApplicationRecord
     settings.system_font_ui
   end
 
+  def setting_noindex
+    settings.noindex
+  end
+
   def activate_session(request)
     session_activations.activate(session_id: SecureRandom.hex,
                                  user_agent: request.user_agent,
diff --git a/app/views/accounts/show.html.haml b/app/views/accounts/show.html.haml
index a19049103..7ed634e5d 100644
--- a/app/views/accounts/show.html.haml
+++ b/app/views/accounts/show.html.haml
@@ -2,6 +2,9 @@
   = display_name(@account)
 
 - content_for :header_tags do
+  - if @account.user&.setting_noindex
+    %meta{ name: 'robots', content: 'noindex' }/
+
   %link{ rel: 'salmon', href: api_salmon_url(@account.id) }/
   %link{ rel: 'alternate', type: 'application/atom+xml', href: account_url(@account, format: 'atom') }/
 
diff --git a/app/views/follower_accounts/index.html.haml b/app/views/follower_accounts/index.html.haml
index 89c7f3a29..738b31638 100644
--- a/app/views/follower_accounts/index.html.haml
+++ b/app/views/follower_accounts/index.html.haml
@@ -2,6 +2,9 @@
   = t('accounts.people_who_follow', name: display_name(@account))
 
 - content_for :header_tags do
+  - if @account.user&.setting_noindex
+    %meta{ name: 'robots', content: 'noindex' }/
+
   = render 'accounts/og', account: @account, url: account_followers_url(@account, only_path: false)
 
 = render 'accounts/header', account: @account
diff --git a/app/views/following_accounts/index.html.haml b/app/views/following_accounts/index.html.haml
index 6f0de7590..9637c689f 100644
--- a/app/views/following_accounts/index.html.haml
+++ b/app/views/following_accounts/index.html.haml
@@ -2,6 +2,9 @@
   = t('accounts.people_followed_by', name: display_name(@account))
 
 - content_for :header_tags do
+  - if @account.user&.setting_noindex
+    %meta{ name: 'robots', content: 'noindex' }/
+
   = render 'accounts/og', account: @account, url: account_followers_url(@account, only_path: false)
 
 = render 'accounts/header', account: @account
diff --git a/app/views/layouts/embedded.html.haml b/app/views/layouts/embedded.html.haml
index 4826f32f7..46dab2d0f 100644
--- a/app/views/layouts/embedded.html.haml
+++ b/app/views/layouts/embedded.html.haml
@@ -2,6 +2,8 @@
 %html{ lang: I18n.locale }
   %head
     %meta{ charset: 'utf-8' }/
+    %meta{ name: 'robots', content: 'noindex' }/
+
     = stylesheet_pack_tag 'common', media: 'all'
     = javascript_pack_tag 'common', integrity: true, crossorigin: 'anonymous'
     = javascript_pack_tag "locale_#{I18n.locale}", integrity: true, crossorigin: 'anonymous'
diff --git a/app/views/settings/preferences/show.html.haml b/app/views/settings/preferences/show.html.haml
index 56a261ab6..3b5d90942 100644
--- a/app/views/settings/preferences/show.html.haml
+++ b/app/views/settings/preferences/show.html.haml
@@ -41,6 +41,9 @@
       = ff.input :must_be_following, as: :boolean, wrapper: :with_label
 
   .fields-group
+    = f.input :setting_noindex, as: :boolean, wrapper: :with_label
+
+  .fields-group
     = f.input :setting_boost_modal, as: :boolean, wrapper: :with_label
     = f.input :setting_delete_modal, as: :boolean, wrapper: :with_label
 
diff --git a/app/views/stream_entries/show.html.haml b/app/views/stream_entries/show.html.haml
index d01e82af8..80ea30eb1 100644
--- a/app/views/stream_entries/show.html.haml
+++ b/app/views/stream_entries/show.html.haml
@@ -1,4 +1,7 @@
 - content_for :header_tags do
+  - if @account.user&.setting_noindex
+    %meta{ name: 'robots', content: 'noindex' }/
+
   %link{ rel: 'alternate', type: 'application/atom+xml', href: account_stream_entry_url(@account, @stream_entry, format: 'atom') }/
   %link{ rel: 'alternate', type: 'application/json+oembed', href: api_oembed_url(url: account_stream_entry_url(@account, @stream_entry), format: 'json') }/
 
diff --git a/config/locales/simple_form.en.yml b/config/locales/simple_form.en.yml
index e3f784a1a..fbaf0ff68 100644
--- a/config/locales/simple_form.en.yml
+++ b/config/locales/simple_form.en.yml
@@ -12,6 +12,7 @@ en:
         note:
           one: <span class="note-counter">1</span> character left
           other: <span class="note-counter">%{count}</span> characters left
+        setting_noindex: Affects your public profile and status pages
       imports:
         data: CSV file exported from another Mastodon instance
       sessions:
@@ -41,6 +42,7 @@ en:
         setting_default_sensitive: Always mark media as sensitive
         setting_delete_modal: Show confirmation dialog before deleting a toot
         setting_system_font_ui: Use system's default font
+        setting_noindex: Opt-out of search engine indexing
         severity: Severity
         type: Import type
         username: Username
diff --git a/config/settings.yml b/config/settings.yml
index 579ba2929..d239fb6a6 100644
--- a/config/settings.yml
+++ b/config/settings.yml
@@ -21,6 +21,7 @@ defaults: &defaults
   auto_play_gif: false
   delete_modal: true
   system_font_ui: false
+  noindex: false
   notification_emails:
     follow: false
     reblog: false