From 3df85a843ce9715700fd9323ef48f801935bc221 Mon Sep 17 00:00:00 2001 From: ThibG Date: Wed, 27 Dec 2017 18:21:12 +0100 Subject: [PATCH 1/5] Make host_meta/webfinger replies cacheable (fixes #6100) (#6101) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit * Make host_meta/webfinger replies cacheable (fixes #6100) Drop common code for handling users and sessions as webfinger queries are very basic, public APIs. Also explicitly mark results as cacheable with “expires_in”. * Add “Vary: Accept” header for caching since content-negociation is used --- app/controllers/well_known/host_meta_controller.rb | 6 +++++- app/controllers/well_known/webfinger_controller.rb | 6 +++++- 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/app/controllers/well_known/host_meta_controller.rb b/app/controllers/well_known/host_meta_controller.rb index 40f96eaa25..5fb70288a2 100644 --- a/app/controllers/well_known/host_meta_controller.rb +++ b/app/controllers/well_known/host_meta_controller.rb @@ -1,15 +1,19 @@ # frozen_string_literal: true module WellKnown - class HostMetaController < ApplicationController + class HostMetaController < ActionController::Base include RoutingHelper + before_action { response.headers['Vary'] = 'Accept' } + def show @webfinger_template = "#{webfinger_url}?resource={uri}" respond_to do |format| format.xml { render content_type: 'application/xrd+xml' } end + + expires_in(3.days, public: true) end end end diff --git a/app/controllers/well_known/webfinger_controller.rb b/app/controllers/well_known/webfinger_controller.rb index 5cc606808b..28654b61d8 100644 --- a/app/controllers/well_known/webfinger_controller.rb +++ b/app/controllers/well_known/webfinger_controller.rb @@ -1,9 +1,11 @@ # frozen_string_literal: true module WellKnown - class WebfingerController < ApplicationController + class WebfingerController < ActionController::Base include RoutingHelper + before_action { response.headers['Vary'] = 'Accept' } + def show @account = Account.find_local!(username_from_resource) @@ -16,6 +18,8 @@ module WellKnown render content_type: 'application/xrd+xml' end end + + expires_in(3.days, public: true) rescue ActiveRecord::RecordNotFound head 404 end From a52820a7fd0ea470a51467da03a05a8fc454a26a Mon Sep 17 00:00:00 2001 From: MitarashiDango Date: Fri, 29 Dec 2017 00:20:34 +0900 Subject: [PATCH 2/5] bug fix (WebPush does not work) (#6120) --- .../mastodon/actions/push_notifications/registerer.js | 2 +- app/javascript/mastodon/main.js | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/app/javascript/mastodon/actions/push_notifications/registerer.js b/app/javascript/mastodon/actions/push_notifications/registerer.js index f851c311c0..1d040bc8c8 100644 --- a/app/javascript/mastodon/actions/push_notifications/registerer.js +++ b/app/javascript/mastodon/actions/push_notifications/registerer.js @@ -51,7 +51,7 @@ const sendSubscriptionToBackend = (subscription, me) => { // Last one checks for payload support: https://web-push-book.gauntface.com/chapter-06/01-non-standards-browsers/#no-payload const supportsPushNotifications = ('serviceWorker' in navigator && 'PushManager' in window && 'getKey' in PushSubscription.prototype); -export default function register () { +export function register () { return (dispatch, getState) => { dispatch(setBrowserSupport(supportsPushNotifications)); const me = getState().getIn(['meta', 'me']); diff --git a/app/javascript/mastodon/main.js b/app/javascript/mastodon/main.js index 9b18465f55..5d73caa108 100644 --- a/app/javascript/mastodon/main.js +++ b/app/javascript/mastodon/main.js @@ -1,4 +1,4 @@ -import { register as registerPushNotifications } from './actions/push_notifications'; +import * as registerPushNotifications from './actions/push_notifications'; import { default as Mastodon, store } from './containers/mastodon'; import React from 'react'; import ReactDOM from 'react-dom'; From 9427823d5c46bcf7c1651dbb103bca087b387e1c Mon Sep 17 00:00:00 2001 From: Eugen Rochko Date: Fri, 29 Dec 2017 19:52:04 +0100 Subject: [PATCH 3/5] Add more instance stats APIs (#6125) * Add GET /api/v1/instance/peers API to reveal known domains * Add GET /api/v1/instance/activity API * Make new APIs disableable, exclude private statuses from activity stats * Fix code style issue * Fix week timestamps --- app/controllers/admin/settings_controller.rb | 4 +++ .../api/v1/instances/activity_controller.rb | 36 +++++++++++++++++++ .../api/v1/instances/peers_controller.rb | 17 +++++++++ app/controllers/application_controller.rb | 9 +++++ .../auth/confirmations_controller.rb | 6 ---- .../concerns/user_tracking_concern.rb | 1 + app/lib/activity_tracker.rb | 31 ++++++++++++++++ app/models/form/admin_settings.rb | 4 +++ app/models/status.rb | 6 ++++ app/models/user.rb | 15 ++++++++ app/views/admin/settings/edit.html.haml | 8 +++++ config/locales/en.yml | 6 ++++ config/routes.rb | 6 +++- config/settings.yml | 3 +- 14 files changed, 144 insertions(+), 8 deletions(-) create mode 100644 app/controllers/api/v1/instances/activity_controller.rb create mode 100644 app/controllers/api/v1/instances/peers_controller.rb create mode 100644 app/lib/activity_tracker.rb diff --git a/app/controllers/admin/settings_controller.rb b/app/controllers/admin/settings_controller.rb index eed5fb6b57..487282dc35 100644 --- a/app/controllers/admin/settings_controller.rb +++ b/app/controllers/admin/settings_controller.rb @@ -17,6 +17,8 @@ module Admin bootstrap_timeline_accounts thumbnail min_invite_role + activity_api_enabled + peers_api_enabled ).freeze BOOLEAN_SETTINGS = %w( @@ -24,6 +26,8 @@ module Admin open_deletion timeline_preview show_staff_badge + activity_api_enabled + peers_api_enabled ).freeze UPLOAD_SETTINGS = %w( diff --git a/app/controllers/api/v1/instances/activity_controller.rb b/app/controllers/api/v1/instances/activity_controller.rb new file mode 100644 index 0000000000..36f52c38d7 --- /dev/null +++ b/app/controllers/api/v1/instances/activity_controller.rb @@ -0,0 +1,36 @@ +# frozen_string_literal: true + +class Api::V1::Instances::ActivityController < Api::BaseController + before_action :require_enabled_api! + + respond_to :json + + def show + render_cached_json('api:v1:instances:activity:show', expires_in: 1.day) { activity } + end + + private + + def activity + weeks = [] + + 12.times do |i| + day = i.weeks.ago.to_date + week_id = day.cweek + week = Date.commercial(day.cwyear, week_id) + + weeks << { + week: week.to_time.to_i.to_s, + statuses: Redis.current.get("activity:statuses:local:#{week_id}") || 0, + logins: Redis.current.pfcount("activity:logins:#{week_id}"), + registrations: Redis.current.get("activity:accounts:local:#{week_id}") || 0, + } + end + + weeks + end + + def require_enabled_api! + head 404 unless Setting.activity_api_enabled + end +end diff --git a/app/controllers/api/v1/instances/peers_controller.rb b/app/controllers/api/v1/instances/peers_controller.rb new file mode 100644 index 0000000000..2070c487df --- /dev/null +++ b/app/controllers/api/v1/instances/peers_controller.rb @@ -0,0 +1,17 @@ +# frozen_string_literal: true + +class Api::V1::Instances::PeersController < Api::BaseController + before_action :require_enabled_api! + + respond_to :json + + def index + render_cached_json('api:v1:instances:peers:index', expires_in: 1.day) { Account.remote.domains } + end + + private + + def require_enabled_api! + head 404 unless Setting.peers_api_enabled + end +end diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb index a213302cb3..51a978f440 100644 --- a/app/controllers/application_controller.rb +++ b/app/controllers/application_controller.rb @@ -121,4 +121,13 @@ class ApplicationController < ActionController::Base end end end + + def render_cached_json(cache_key, **options) + data = Rails.cache.fetch(cache_key, { raw: true }.merge(options)) do + yield.to_json + end + + expires_in options[:expires_in], public: true + render json: data + end end diff --git a/app/controllers/auth/confirmations_controller.rb b/app/controllers/auth/confirmations_controller.rb index d5e8e58ede..2fdb281f40 100644 --- a/app/controllers/auth/confirmations_controller.rb +++ b/app/controllers/auth/confirmations_controller.rb @@ -2,10 +2,4 @@ class Auth::ConfirmationsController < Devise::ConfirmationsController layout 'auth' - - def show - super do |user| - BootstrapTimelineWorker.perform_async(user.account_id) if user.errors.empty? - end - end end diff --git a/app/controllers/concerns/user_tracking_concern.rb b/app/controllers/concerns/user_tracking_concern.rb index 8663c3086b..1e31329411 100644 --- a/app/controllers/concerns/user_tracking_concern.rb +++ b/app/controllers/concerns/user_tracking_concern.rb @@ -17,6 +17,7 @@ module UserTrackingConcern # Mark as signed-in today current_user.update_tracked_fields!(request) + ActivityTracker.record('activity:logins', current_user.id) # Regenerate feed if needed regenerate_feed! if user_needs_feed_update? diff --git a/app/lib/activity_tracker.rb b/app/lib/activity_tracker.rb new file mode 100644 index 0000000000..50e927b0ce --- /dev/null +++ b/app/lib/activity_tracker.rb @@ -0,0 +1,31 @@ +# frozen_string_literal: true + +class ActivityTracker + EXPIRE_AFTER = 90.days.seconds + + class << self + def increment(prefix) + key = [prefix, current_week].join(':') + + redis.incrby(key, 1) + redis.expire(key, EXPIRE_AFTER) + end + + def record(prefix, value) + key = [prefix, current_week].join(':') + + redis.pfadd(key, value) + redis.expire(key, value) + end + + private + + def redis + Redis.current + end + + def current_week + Time.zone.today.cweek + end + end +end diff --git a/app/models/form/admin_settings.rb b/app/models/form/admin_settings.rb index c1d2cf4207..dd629279c0 100644 --- a/app/models/form/admin_settings.rb +++ b/app/models/form/admin_settings.rb @@ -30,6 +30,10 @@ class Form::AdminSettings :bootstrap_timeline_accounts=, :min_invite_role, :min_invite_role=, + :activity_api_enabled, + :activity_api_enabled=, + :peers_api_enabled, + :peers_api_enabled=, to: Setting ) end diff --git a/app/models/status.rb b/app/models/status.rb index 8579ff9e45..00dcec624d 100644 --- a/app/models/status.rb +++ b/app/models/status.rb @@ -135,6 +135,7 @@ class Status < ApplicationRecord end after_create_commit :store_uri, if: :local? + after_create_commit :update_statistics, if: :local? around_create Mastodon::Snowflake::Callbacks @@ -308,4 +309,9 @@ class Status < ApplicationRecord def set_local self.local = account.local? end + + def update_statistics + return unless public_visibility? || unlisted_visibility? + ActivityTracker.increment('activity:statuses:local') + end end diff --git a/app/models/user.rb b/app/models/user.rb index 578622fdf8..3ce6517a65 100644 --- a/app/models/user.rb +++ b/app/models/user.rb @@ -122,9 +122,19 @@ class User < ApplicationRecord update!(disabled: false) end + def confirm + return if confirmed? + + super + update_statistics! + end + def confirm! + return if confirmed? + skip_confirmation! save! + update_statistics! end def promote! @@ -202,4 +212,9 @@ class User < ApplicationRecord def sanitize_languages filtered_languages.reject!(&:blank?) end + + def update_statistics! + BootstrapTimelineWorker.perform_async(account_id) + ActivityTracker.increment('activity:accounts:local') + end end diff --git a/app/views/admin/settings/edit.html.haml b/app/views/admin/settings/edit.html.haml index c7c25f5283..4f9115ed2d 100644 --- a/app/views/admin/settings/edit.html.haml +++ b/app/views/admin/settings/edit.html.haml @@ -46,5 +46,13 @@ .fields-group = f.input :bootstrap_timeline_accounts, wrapper: :with_block_label, label: t('admin.settings.bootstrap_timeline_accounts.title'), hint: t('admin.settings.bootstrap_timeline_accounts.desc_html') + %hr/ + + .fields-group + = f.input :activity_api_enabled, as: :boolean, wrapper: :with_label, label: t('admin.settings.activity_api_enabled.title'), hint: t('admin.settings.activity_api_enabled.desc_html') + + .fields-group + = f.input :peers_api_enabled, as: :boolean, wrapper: :with_label, label: t('admin.settings.peers_api_enabled.title'), hint: t('admin.settings.peers_api_enabled.desc_html') + .actions = f.button :button, t('generic.save_changes'), type: :submit diff --git a/config/locales/en.yml b/config/locales/en.yml index 325391cfd3..e4425b424f 100644 --- a/config/locales/en.yml +++ b/config/locales/en.yml @@ -265,12 +265,18 @@ en: unresolved: Unresolved view: View settings: + activity_api_enabled: + desc_html: Counts of locally posted statuses, active users, and new registrations in weekly buckets + title: Publish aggregate statistics about user activity bootstrap_timeline_accounts: desc_html: Separate multiple usernames by comma. Only local and unlocked accounts will work. Default when empty is all local admins. title: Default follows for new users contact_information: email: Business e-mail username: Contact username + peers_api_enabled: + desc_html: Domain names this instance has encountered in the fediverse + title: Publish list of discovered instances registrations: closed_message: desc_html: Displayed on frontpage when registrations are closed. You can use HTML tags diff --git a/config/routes.rb b/config/routes.rb index 467849c03d..80a2c6d13d 100644 --- a/config/routes.rb +++ b/config/routes.rb @@ -241,7 +241,11 @@ Rails.application.routes.draw do resources :apps, only: [:create] - resource :instance, only: [:show] + resource :instance, only: [:show] do + resources :peers, only: [:index], controller: 'instances/peers' + resource :activity, only: [:show], controller: 'instances/activity' + end + resource :domain_blocks, only: [:show, :create, :destroy] resources :follow_requests, only: [:index] do diff --git a/config/settings.yml b/config/settings.yml index f03a32e50c..4a2519464b 100644 --- a/config/settings.yml +++ b/config/settings.yml @@ -47,7 +47,8 @@ defaults: &defaults - webmaster - administrator bootstrap_timeline_accounts: '' - + activity_api_enabled: true + peers_api_enabled: true development: <<: *defaults From d9c2806048dd15592eaa89b462ca6ce03ad80c3d Mon Sep 17 00:00:00 2001 From: beatrix Date: Fri, 29 Dec 2017 20:43:43 -0500 Subject: [PATCH 4/5] keep the same filters and page when doing custom emojo stuff (fixes #6112) (#6114) --- .../admin/custom_emojis_controller.rb | 24 +++++++++++++------ .../custom_emojis/_custom_emoji.html.haml | 14 +++++------ app/views/admin/custom_emojis/index.html.haml | 2 +- 3 files changed, 25 insertions(+), 15 deletions(-) diff --git a/app/controllers/admin/custom_emojis_controller.rb b/app/controllers/admin/custom_emojis_controller.rb index ccab03de42..d61bafdf02 100644 --- a/app/controllers/admin/custom_emojis_controller.rb +++ b/app/controllers/admin/custom_emojis_controller.rb @@ -3,6 +3,7 @@ module Admin class CustomEmojisController < BaseController before_action :set_custom_emoji, except: [:index, :new, :create] + before_action :set_filter_params def index authorize :custom_emoji, :index? @@ -32,23 +33,26 @@ module Admin if @custom_emoji.update(resource_params) log_action :update, @custom_emoji - redirect_to admin_custom_emojis_path, notice: I18n.t('admin.custom_emojis.updated_msg') + flash[:notice] = I18n.t('admin.custom_emojis.updated_msg') else - redirect_to admin_custom_emojis_path, notice: I18n.t('admin.custom_emojis.update_failed_msg') + flash[:alert] = I18n.t('admin.custom_emojis.update_failed_msg') end + redirect_to admin_custom_emojis_path(page: params[:page], **@filter_params) end def destroy authorize @custom_emoji, :destroy? @custom_emoji.destroy! log_action :destroy, @custom_emoji - redirect_to admin_custom_emojis_path, notice: I18n.t('admin.custom_emojis.destroyed_msg') + flash[:notice] = I18n.t('admin.custom_emojis.destroyed_msg') + redirect_to admin_custom_emojis_path(page: params[:page], **@filter_params) end def copy authorize @custom_emoji, :copy? - emoji = CustomEmoji.find_or_initialize_by(domain: nil, shortcode: @custom_emoji.shortcode) + emoji = CustomEmoji.find_or_initialize_by(domain: nil, + shortcode: @custom_emoji.shortcode) emoji.image = @custom_emoji.image if emoji.save @@ -58,21 +62,23 @@ module Admin flash[:alert] = I18n.t('admin.custom_emojis.copy_failed_msg') end - redirect_to admin_custom_emojis_path(page: params[:page]) + redirect_to admin_custom_emojis_path(page: params[:page], **@filter_params) end def enable authorize @custom_emoji, :enable? @custom_emoji.update!(disabled: false) log_action :enable, @custom_emoji - redirect_to admin_custom_emojis_path, notice: I18n.t('admin.custom_emojis.enabled_msg') + flash[:notice] = I18n.t('admin.custom_emojis.enabled_msg') + redirect_to admin_custom_emojis_path(page: params[:page], **@filter_params) end def disable authorize @custom_emoji, :disable? @custom_emoji.update!(disabled: true) log_action :disable, @custom_emoji - redirect_to admin_custom_emojis_path, notice: I18n.t('admin.custom_emojis.disabled_msg') + flash[:notice] = I18n.t('admin.custom_emojis.disabled_msg') + redirect_to admin_custom_emojis_path(page: params[:page], **@filter_params) end private @@ -81,6 +87,10 @@ module Admin @custom_emoji = CustomEmoji.find(params[:id]) end + def set_filter_params + @filter_params = filter_params.to_hash.symbolize_keys + end + def resource_params params.require(:custom_emoji).permit(:shortcode, :image, :visible_in_picker) end diff --git a/app/views/admin/custom_emojis/_custom_emoji.html.haml b/app/views/admin/custom_emojis/_custom_emoji.html.haml index f7fd2538c9..fbaa9a1749 100644 --- a/app/views/admin/custom_emojis/_custom_emoji.html.haml +++ b/app/views/admin/custom_emojis/_custom_emoji.html.haml @@ -11,18 +11,18 @@ %td - if custom_emoji.local? - if custom_emoji.visible_in_picker - = table_link_to 'eye', t('admin.custom_emojis.listed'), admin_custom_emoji_path(custom_emoji, custom_emoji: { visible_in_picker: false }), method: :patch + = table_link_to 'eye', t('admin.custom_emojis.listed'), admin_custom_emoji_path(custom_emoji, custom_emoji: { visible_in_picker: false }, page: params[:page], **@filter_params), method: :patch - else - = table_link_to 'eye-slash', t('admin.custom_emojis.unlisted'), admin_custom_emoji_path(custom_emoji, custom_emoji: { visible_in_picker: true }), method: :patch + = table_link_to 'eye-slash', t('admin.custom_emojis.unlisted'), admin_custom_emoji_path(custom_emoji, custom_emoji: { visible_in_picker: true }, page: params[:page], **@filter_params), method: :patch - else - if custom_emoji.local_counterpart.present? - = link_to safe_join([custom_emoji_tag(custom_emoji.local_counterpart), t('admin.custom_emojis.overwrite')]), copy_admin_custom_emoji_path(custom_emoji, page: params[:page]), method: :post, class: 'table-action-link' + = link_to safe_join([custom_emoji_tag(custom_emoji.local_counterpart), t('admin.custom_emojis.overwrite')]), copy_admin_custom_emoji_path(custom_emoji, page: params[:page], **@filter_params), method: :post, class: 'table-action-link' - else - = table_link_to 'copy', t('admin.custom_emojis.copy'), copy_admin_custom_emoji_path(custom_emoji, page: params[:page]), method: :post + = table_link_to 'copy', t('admin.custom_emojis.copy'), copy_admin_custom_emoji_path(custom_emoji, page: params[:page], **@filter_params), method: :post %td - if custom_emoji.disabled? - = table_link_to 'power-off', t('admin.custom_emojis.enable'), enable_admin_custom_emoji_path(custom_emoji), method: :post, data: { confirm: t('admin.accounts.are_you_sure') } + = table_link_to 'power-off', t('admin.custom_emojis.enable'), enable_admin_custom_emoji_path(custom_emoji, page: params[:page], **@filter_params), method: :post, data: { confirm: t('admin.accounts.are_you_sure') } - else - = table_link_to 'power-off', t('admin.custom_emojis.disable'), disable_admin_custom_emoji_path(custom_emoji), method: :post, data: { confirm: t('admin.accounts.are_you_sure') } + = table_link_to 'power-off', t('admin.custom_emojis.disable'), disable_admin_custom_emoji_path(custom_emoji, page: params[:page], **@filter_params), method: :post, data: { confirm: t('admin.accounts.are_you_sure') } %td - = table_link_to 'times', t('admin.custom_emojis.delete'), admin_custom_emoji_path(custom_emoji), method: :delete, data: { confirm: t('admin.accounts.are_you_sure') } + = table_link_to 'times', t('admin.custom_emojis.delete'), admin_custom_emoji_path(custom_emoji, page: params[:page], **@filter_params), method: :delete, data: { confirm: t('admin.accounts.are_you_sure') } diff --git a/app/views/admin/custom_emojis/index.html.haml b/app/views/admin/custom_emojis/index.html.haml index 89ea3a6fe3..3a119276ca 100644 --- a/app/views/admin/custom_emojis/index.html.haml +++ b/app/views/admin/custom_emojis/index.html.haml @@ -29,7 +29,7 @@ .actions %button= t('admin.accounts.search') - = link_to t('admin.accounts.reset'), admin_accounts_path, class: 'button negative' + = link_to t('admin.accounts.reset'), admin_custom_emojis_path, class: 'button negative' .table-wrapper %table.table From fc8c2c9b4afbc89f826e2ec4dc7200043d3d85c3 Mon Sep 17 00:00:00 2001 From: Jeong Arm Date: Sat, 30 Dec 2017 10:44:19 +0900 Subject: [PATCH 5/5] Translate Korean (#6131) Relates to #6125, #6099 --- app/javascript/mastodon/locales/ko.json | 2 ++ config/locales/ko.yml | 6 ++++++ 2 files changed, 8 insertions(+) diff --git a/app/javascript/mastodon/locales/ko.json b/app/javascript/mastodon/locales/ko.json index 0798fa7cf3..7e77b78244 100644 --- a/app/javascript/mastodon/locales/ko.json +++ b/app/javascript/mastodon/locales/ko.json @@ -213,6 +213,7 @@ "search_popout.tips.user": "유저", "search_results.total": "{count, number}건의 결과", "standalone.public_title": "A look inside...", + "status.block": "@{name} 차단", "status.cannot_reblog": "이 포스트는 부스트 할 수 없습니다", "status.delete": "삭제", "status.embed": "공유하기", @@ -221,6 +222,7 @@ "status.media_hidden": "미디어 숨겨짐", "status.mention": "답장", "status.more": "자세히", + "status.mute": "@{name} 뮤트", "status.mute_conversation": "이 대화를 뮤트", "status.open": "상세 정보 표시", "status.pin": "고정", diff --git a/config/locales/ko.yml b/config/locales/ko.yml index a60884b276..9e3505a721 100644 --- a/config/locales/ko.yml +++ b/config/locales/ko.yml @@ -265,12 +265,18 @@ ko: unresolved: 미해결 view: 표시 settings: + activity_api_enabled: + desc_html: 주별 로컬에 게시 된 글, 활성 사용자 및 새로운 가입자 수 + title: 유저 활동에 대한 통계 발행 bootstrap_timeline_accounts: desc_html: 콤마로 여러 유저명을 구분. 로컬의 잠기지 않은 계정만 가능합니다. 비워 둘 경우 모든 로컬 관리자가 기본으로 사용 됩니다. title: 새 유저가 팔로우 할 계정들 contact_information: email: 공개할 메일 주소를 입력 username: 아이디를 입력 + peers_api_enabled: + desc_html: 이 인스턴스가 페디버스에서 만났던 도메인 네임들 + title: 발견 된 인스턴스들의 리스트 발행 registrations: closed_message: desc_html: 신규 등록을 받지 않을 때 프론트 페이지에 표시됩니다.
HTML 태그를 사용할 수 있습니다.