From 49cc0eb3e7d1521079e33a60216df46679082547 Mon Sep 17 00:00:00 2001
From: Eugen Rochko <eugen@zeonfederated.com>
Date: Thu, 5 Oct 2017 23:42:05 +0200
Subject: [PATCH] Improve admin UI for custom emojis, add copy/disable/enable
 (#5231)

---
 .../admin/custom_emojis_controller.rb         |  42 +++-
 .../api/v1/custom_emojis_controller.rb        |   2 +-
 app/models/account_filter.rb                  |   2 +
 app/models/custom_emoji.rb                    |  11 +-
 app/models/custom_emoji_filter.rb             |  34 ++++
 .../custom_emojis/_custom_emoji.html.haml     |  13 ++
 app/views/admin/custom_emojis/index.html.haml |  20 ++
 config/brakeman.ignore                        | 182 +++++++++++++++++-
 config/locales/de.yml                         |   6 +-
 config/locales/en.yml                         |   7 +
 config/routes.rb                              |   8 +-
 ...005171936_add_disabled_to_custom_emojis.rb |  15 ++
 db/schema.rb                                  |   3 +-
 13 files changed, 330 insertions(+), 15 deletions(-)
 create mode 100644 app/models/custom_emoji_filter.rb
 create mode 100644 db/migrate/20171005171936_add_disabled_to_custom_emojis.rb

diff --git a/app/controllers/admin/custom_emojis_controller.rb b/app/controllers/admin/custom_emojis_controller.rb
index d70514d9a..dba9f1012 100644
--- a/app/controllers/admin/custom_emojis_controller.rb
+++ b/app/controllers/admin/custom_emojis_controller.rb
@@ -2,8 +2,10 @@
 
 module Admin
   class CustomEmojisController < BaseController
+    before_action :set_custom_emoji, except: [:index, :new, :create]
+
     def index
-      @custom_emojis = CustomEmoji.local
+      @custom_emojis = filtered_custom_emojis.page(params[:page])
     end
 
     def new
@@ -21,14 +23,50 @@ module Admin
     end
 
     def destroy
-      CustomEmoji.find(params[:id]).destroy
+      @custom_emoji.destroy
       redirect_to admin_custom_emojis_path, notice: I18n.t('admin.custom_emojis.destroyed_msg')
     end
 
+    def copy
+      emoji = @custom_emoji.dup
+      emoji.domain = nil
+
+      if emoji.save
+        redirect_to admin_custom_emojis_path, notice: I18n.t('admin.custom_emojis.copied_msg')
+      else
+        redirect_to admin_custom_emojis_path, alert: I18n.t('admin.custom_emojis.copy_failed_msg')
+      end
+    end
+
+    def enable
+      @custom_emoji.update!(disabled: false)
+      redirect_to admin_custom_emojis_path, notice: I18n.t('admin.custom_emojis.enabled_msg')
+    end
+
+    def disable
+      @custom_emoji.update!(disabled: true)
+      redirect_to admin_custom_emojis_path, notice: I18n.t('admin.custom_emojis.disabled_msg')
+    end
+
     private
 
+    def set_custom_emoji
+      @custom_emoji = CustomEmoji.find(params[:id])
+    end
+
     def resource_params
       params.require(:custom_emoji).permit(:shortcode, :image)
     end
+
+    def filtered_custom_emojis
+      CustomEmojiFilter.new(filter_params).results
+    end
+
+    def filter_params
+      params.permit(
+        :local,
+        :remote
+      )
+    end
   end
 end
diff --git a/app/controllers/api/v1/custom_emojis_controller.rb b/app/controllers/api/v1/custom_emojis_controller.rb
index 4dd77fb55..f8cd64455 100644
--- a/app/controllers/api/v1/custom_emojis_controller.rb
+++ b/app/controllers/api/v1/custom_emojis_controller.rb
@@ -4,6 +4,6 @@ class Api::V1::CustomEmojisController < Api::BaseController
   respond_to :json
 
   def index
-    render json: CustomEmoji.local, each_serializer: REST::CustomEmojiSerializer
+    render json: CustomEmoji.local.where(disabled: false), each_serializer: REST::CustomEmojiSerializer
   end
 end
diff --git a/app/models/account_filter.rb b/app/models/account_filter.rb
index 1a8cc5192..189872368 100644
--- a/app/models/account_filter.rb
+++ b/app/models/account_filter.rb
@@ -9,9 +9,11 @@ class AccountFilter
 
   def results
     scope = Account.alphabetic
+
     params.each do |key, value|
       scope.merge!(scope_for(key, value)) if value.present?
     end
+
     scope
   end
 
diff --git a/app/models/custom_emoji.rb b/app/models/custom_emoji.rb
index 9e9be5e12..258b50c82 100644
--- a/app/models/custom_emoji.rb
+++ b/app/models/custom_emoji.rb
@@ -12,6 +12,7 @@
 #  image_updated_at   :datetime
 #  created_at         :datetime         not null
 #  updated_at         :datetime         not null
+#  disabled           :boolean          default(FALSE), not null
 #
 
 class CustomEmoji < ApplicationRecord
@@ -26,10 +27,16 @@ class CustomEmoji < ApplicationRecord
   validates_attachment :image, content_type: { content_type: 'image/png' }, presence: true, size: { in: 0..50.kilobytes }
   validates :shortcode, uniqueness: { scope: :domain }, format: { with: /\A#{SHORTCODE_RE_FRAGMENT}\z/ }, length: { minimum: 2 }
 
-  scope :local, -> { where(domain: nil) }
+  scope :local,      -> { where(domain: nil) }
+  scope :remote,     -> { where.not(domain: nil) }
+  scope :alphabetic, -> { order(domain: :asc, shortcode: :asc) }
 
   include Remotable
 
+  def local?
+    domain.nil?
+  end
+
   class << self
     def from_text(text, domain)
       return [] if text.blank?
@@ -38,7 +45,7 @@ class CustomEmoji < ApplicationRecord
 
       return [] if shortcodes.empty?
 
-      where(shortcode: shortcodes, domain: domain)
+      where(shortcode: shortcodes, domain: domain, disabled: false)
     end
   end
 end
diff --git a/app/models/custom_emoji_filter.rb b/app/models/custom_emoji_filter.rb
new file mode 100644
index 000000000..2d1394a59
--- /dev/null
+++ b/app/models/custom_emoji_filter.rb
@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+class CustomEmojiFilter
+  attr_reader :params
+
+  def initialize(params)
+    @params = params
+  end
+
+  def results
+    scope = CustomEmoji.alphabetic
+
+    params.each do |key, value|
+      scope.merge!(scope_for(key, value)) if value.present?
+    end
+
+    scope
+  end
+
+  private
+
+  def scope_for(key, value)
+    case key.to_s
+    when 'local'
+      CustomEmoji.local
+    when 'remote'
+      CustomEmoji.remote
+    when 'by_domain'
+      CustomEmoji.where(domain: value)
+    else
+      raise "Unknown filter: #{key}"
+    end
+  end
+end
diff --git a/app/views/admin/custom_emojis/_custom_emoji.html.haml b/app/views/admin/custom_emojis/_custom_emoji.html.haml
index ff1aa9925..53263c43f 100644
--- a/app/views/admin/custom_emojis/_custom_emoji.html.haml
+++ b/app/views/admin/custom_emojis/_custom_emoji.html.haml
@@ -3,5 +3,18 @@
     = image_tag custom_emoji.image.url, class: 'emojione', alt: ":#{custom_emoji.shortcode}:"
   %td
     %samp= ":#{custom_emoji.shortcode}:"
+  %td
+    - if custom_emoji.local?
+      = t('admin.accounts.location.local')
+    - else
+      = custom_emoji.domain
+  %td
+    - unless custom_emoji.local?
+      = table_link_to 'copy', t('admin.custom_emojis.copy'), copy_admin_custom_emoji_path(custom_emoji), 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') }
+    - 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') }
   %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') }
diff --git a/app/views/admin/custom_emojis/index.html.haml b/app/views/admin/custom_emojis/index.html.haml
index d5f32e84b..20ffb8529 100644
--- a/app/views/admin/custom_emojis/index.html.haml
+++ b/app/views/admin/custom_emojis/index.html.haml
@@ -1,14 +1,34 @@
 - content_for :page_title do
   = t('admin.custom_emojis.title')
 
+.filters
+  .filter-subset
+    %strong= t('admin.accounts.location.title')
+    %ul
+      %li= filter_link_to t('admin.accounts.location.all'), local: nil, remote: nil
+      %li
+        - if selected? local: '1', remote: nil
+          = filter_link_to t('admin.accounts.location.local'), {local: nil, remote: nil}, {local: '1', remote: nil}
+        - else
+          = filter_link_to t('admin.accounts.location.local'), local: '1', remote: nil
+      %li
+        - if selected? remote: '1', local: nil
+          = filter_link_to t('admin.accounts.location.remote'), {remote: nil, local: nil}, {remote: '1', local: nil}
+        - else
+          = filter_link_to t('admin.accounts.location.remote'), remote: '1', local: nil
+
 .table-wrapper
   %table.table
     %thead
       %tr
         %th= t('admin.custom_emojis.emoji')
         %th= t('admin.custom_emojis.shortcode')
+        %th= t('admin.accounts.domain')
+        %th
+        %th
         %th
     %tbody
       = render @custom_emojis
 
+= paginate @custom_emojis
 = link_to t('admin.custom_emojis.upload'), new_admin_custom_emoji_path, class: 'button'
diff --git a/config/brakeman.ignore b/config/brakeman.ignore
index dbb59dd07..ed6e121d2 100644
--- a/config/brakeman.ignore
+++ b/config/brakeman.ignore
@@ -1,5 +1,81 @@
 {
   "ignored_warnings": [
+    {
+      "warning_type": "Cross-Site Scripting",
+      "warning_code": 4,
+      "fingerprint": "0adbe361b91afff22ba51e5fc2275ec703cc13255a0cb3eecd8dab223ab9f61e",
+      "check_name": "LinkToHref",
+      "message": "Potentially unsafe model attribute in link_to href",
+      "file": "app/views/admin/accounts/show.html.haml",
+      "line": 122,
+      "link": "http://brakemanscanner.org/docs/warning_types/link_to_href",
+      "code": "link_to(Account.find(params[:id]).inbox_url, Account.find(params[:id]).inbox_url)",
+      "render_path": [{"type":"controller","class":"Admin::AccountsController","method":"show","line":13,"file":"app/controllers/admin/accounts_controller.rb"}],
+      "location": {
+        "type": "template",
+        "template": "admin/accounts/show"
+      },
+      "user_input": "Account.find(params[:id]).inbox_url",
+      "confidence": "Weak",
+      "note": ""
+    },
+    {
+      "warning_type": "Cross-Site Scripting",
+      "warning_code": 4,
+      "fingerprint": "1fc29c578d0c89bf13bd5476829d272d54cd06b92ccf6df18568fa1f2674926e",
+      "check_name": "LinkToHref",
+      "message": "Potentially unsafe model attribute in link_to href",
+      "file": "app/views/admin/accounts/show.html.haml",
+      "line": 128,
+      "link": "http://brakemanscanner.org/docs/warning_types/link_to_href",
+      "code": "link_to(Account.find(params[:id]).shared_inbox_url, Account.find(params[:id]).shared_inbox_url)",
+      "render_path": [{"type":"controller","class":"Admin::AccountsController","method":"show","line":13,"file":"app/controllers/admin/accounts_controller.rb"}],
+      "location": {
+        "type": "template",
+        "template": "admin/accounts/show"
+      },
+      "user_input": "Account.find(params[:id]).shared_inbox_url",
+      "confidence": "Weak",
+      "note": ""
+    },
+    {
+      "warning_type": "Cross-Site Scripting",
+      "warning_code": 4,
+      "fingerprint": "2129d4c1e63a351d28d8d2937ff0b50237809c3df6725c0c5ef82b881dbb2086",
+      "check_name": "LinkToHref",
+      "message": "Potentially unsafe model attribute in link_to href",
+      "file": "app/views/admin/accounts/show.html.haml",
+      "line": 35,
+      "link": "http://brakemanscanner.org/docs/warning_types/link_to_href",
+      "code": "link_to(Account.find(params[:id]).url, Account.find(params[:id]).url)",
+      "render_path": [{"type":"controller","class":"Admin::AccountsController","method":"show","line":13,"file":"app/controllers/admin/accounts_controller.rb"}],
+      "location": {
+        "type": "template",
+        "template": "admin/accounts/show"
+      },
+      "user_input": "Account.find(params[:id]).url",
+      "confidence": "Weak",
+      "note": ""
+    },
+    {
+      "warning_type": "Dynamic Render Path",
+      "warning_code": 15,
+      "fingerprint": "3b0a20b08aef13cf8cf865384fae0cfd3324d8200a83262bf4abbc8091b5fec5",
+      "check_name": "Render",
+      "message": "Render path contains parameter value",
+      "file": "app/views/admin/custom_emojis/index.html.haml",
+      "line": 31,
+      "link": "http://brakemanscanner.org/docs/warning_types/dynamic_render_path/",
+      "code": "render(action => filtered_custom_emojis.page(params[:page]), {})",
+      "render_path": [{"type":"controller","class":"Admin::CustomEmojisController","method":"index","line":9,"file":"app/controllers/admin/custom_emojis_controller.rb"}],
+      "location": {
+        "type": "template",
+        "template": "admin/custom_emojis/index"
+      },
+      "user_input": "params[:page]",
+      "confidence": "Weak",
+      "note": ""
+    },
     {
       "warning_type": "Dynamic Render Path",
       "warning_code": 15,
@@ -19,6 +95,44 @@
       "confidence": "Weak",
       "note": ""
     },
+    {
+      "warning_type": "Cross-Site Scripting",
+      "warning_code": 4,
+      "fingerprint": "64b5b2a02ede9c2b3598881eb5a466d63f7d27fe0946aa00d570111ec7338d2e",
+      "check_name": "LinkToHref",
+      "message": "Potentially unsafe model attribute in link_to href",
+      "file": "app/views/admin/accounts/show.html.haml",
+      "line": 131,
+      "link": "http://brakemanscanner.org/docs/warning_types/link_to_href",
+      "code": "link_to(Account.find(params[:id]).followers_url, Account.find(params[:id]).followers_url)",
+      "render_path": [{"type":"controller","class":"Admin::AccountsController","method":"show","line":13,"file":"app/controllers/admin/accounts_controller.rb"}],
+      "location": {
+        "type": "template",
+        "template": "admin/accounts/show"
+      },
+      "user_input": "Account.find(params[:id]).followers_url",
+      "confidence": "Weak",
+      "note": ""
+    },
+    {
+      "warning_type": "Cross-Site Scripting",
+      "warning_code": 4,
+      "fingerprint": "82f7b0d09beb3ab68e0fa16be63cedf4e820f2490326e9a1cec05761d92446cd",
+      "check_name": "LinkToHref",
+      "message": "Potentially unsafe model attribute in link_to href",
+      "file": "app/views/admin/accounts/show.html.haml",
+      "line": 106,
+      "link": "http://brakemanscanner.org/docs/warning_types/link_to_href",
+      "code": "link_to(Account.find(params[:id]).salmon_url, Account.find(params[:id]).salmon_url)",
+      "render_path": [{"type":"controller","class":"Admin::AccountsController","method":"show","line":13,"file":"app/controllers/admin/accounts_controller.rb"}],
+      "location": {
+        "type": "template",
+        "template": "admin/accounts/show"
+      },
+      "user_input": "Account.find(params[:id]).salmon_url",
+      "confidence": "Weak",
+      "note": ""
+    },
     {
       "warning_type": "Dynamic Render Path",
       "warning_code": 15,
@@ -26,7 +140,7 @@
       "check_name": "Render",
       "message": "Render path contains parameter value",
       "file": "app/views/admin/accounts/index.html.haml",
-      "line": 63,
+      "line": 64,
       "link": "http://brakemanscanner.org/docs/warning_types/dynamic_render_path/",
       "code": "render(action => filtered_accounts.page(params[:page]), {})",
       "render_path": [{"type":"controller","class":"Admin::AccountsController","method":"index","line":10,"file":"app/controllers/admin/accounts_controller.rb"}],
@@ -38,6 +152,25 @@
       "confidence": "Weak",
       "note": ""
     },
+    {
+      "warning_type": "Cross-Site Scripting",
+      "warning_code": 4,
+      "fingerprint": "bb0ad5c4a42e06e3846c2089ff5269c17f65483a69414f6ce65eecf2bb11fab7",
+      "check_name": "LinkToHref",
+      "message": "Potentially unsafe model attribute in link_to href",
+      "file": "app/views/admin/accounts/show.html.haml",
+      "line": 95,
+      "link": "http://brakemanscanner.org/docs/warning_types/link_to_href",
+      "code": "link_to(Account.find(params[:id]).remote_url, Account.find(params[:id]).remote_url)",
+      "render_path": [{"type":"controller","class":"Admin::AccountsController","method":"show","line":13,"file":"app/controllers/admin/accounts_controller.rb"}],
+      "location": {
+        "type": "template",
+        "template": "admin/accounts/show"
+      },
+      "user_input": "Account.find(params[:id]).remote_url",
+      "confidence": "Weak",
+      "note": ""
+    },
     {
       "warning_type": "Redirect",
       "warning_code": 18,
@@ -65,7 +198,7 @@
       "check_name": "Render",
       "message": "Render path contains parameter value",
       "file": "app/views/admin/reports/index.html.haml",
-      "line": 24,
+      "line": 25,
       "link": "http://brakemanscanner.org/docs/warning_types/dynamic_render_path/",
       "code": "render(action => filtered_reports.page(params[:page]), {})",
       "render_path": [{"type":"controller","class":"Admin::ReportsController","method":"index","line":9,"file":"app/controllers/admin/reports_controller.rb"}],
@@ -77,6 +210,45 @@
       "confidence": "Weak",
       "note": ""
     },
+    {
+      "warning_type": "SQL Injection",
+      "warning_code": 0,
+      "fingerprint": "cd440d9d0bcb76225f4142030cec0bdec6ad119c537c108c9d514bf87bc34d29",
+      "check_name": "SQL",
+      "message": "Possible SQL injection",
+      "file": "lib/mastodon/timestamp_ids.rb",
+      "line": 69,
+      "link": "http://brakemanscanner.org/docs/warning_types/sql_injection/",
+      "code": "ActiveRecord::Base.connection.execute(\"          CREATE OR REPLACE FUNCTION timestamp_id(table_name text)\\n          RETURNS bigint AS\\n          $$\\n            DECLARE\\n              time_part bigint;\\n              sequence_base bigint;\\n              tail bigint;\\n            BEGIN\\n              -- Our ID will be composed of the following:\\n              -- 6 bytes (48 bits) of millisecond-level timestamp\\n              -- 2 bytes (16 bits) of sequence data\\n\\n              -- The 'sequence data' is intended to be unique within a\\n              -- given millisecond, yet obscure the 'serial number' of\\n              -- this row.\\n\\n              -- To do this, we hash the following data:\\n              -- * Table name (if provided, skipped if not)\\n              -- * Secret salt (should not be guessable)\\n              -- * Timestamp (again, millisecond-level granularity)\\n\\n              -- We then take the first two bytes of that value, and add\\n              -- the lowest two bytes of the table ID sequence number\\n              -- (`table_name`_id_seq). This means that even if we insert\\n              -- two rows at the same millisecond, they will have\\n              -- distinct 'sequence data' portions.\\n\\n              -- If this happens, and an attacker can see both such IDs,\\n              -- they can determine which of the two entries was inserted\\n              -- first, but not the total number of entries in the table\\n              -- (even mod 2**16).\\n\\n              -- The table name is included in the hash to ensure that\\n              -- different tables derive separate sequence bases so rows\\n              -- inserted in the same millisecond in different tables do\\n              -- not reveal the table ID sequence number for one another.\\n\\n              -- The secret salt is included in the hash to ensure that\\n              -- external users cannot derive the sequence base given the\\n              -- timestamp and table name, which would allow them to\\n              -- compute the table ID sequence number.\\n\\n              time_part := (\\n                -- Get the time in milliseconds\\n                ((date_part('epoch', now()) * 1000))::bigint\\n                -- And shift it over two bytes\\n                << 16);\\n\\n              sequence_base := (\\n                'x' ||\\n                -- Take the first two bytes (four hex characters)\\n                substr(\\n                  -- Of the MD5 hash of the data we documented\\n                  md5(table_name ||\\n                    '#{SecureRandom.hex(16)}' ||\\n                    time_part::text\\n                  ),\\n                  1, 4\\n                )\\n              -- And turn it into a bigint\\n              )::bit(16)::bigint;\\n\\n              -- Finally, add our sequence number to our base, and chop\\n              -- it to the last two bytes\\n              tail := (\\n                (sequence_base + nextval(table_name || '_id_seq'))\\n                & 65535);\\n\\n              -- Return the time part and the sequence part. OR appears\\n              -- faster here than addition, but they're equivalent:\\n              -- time_part has no trailing two bytes, and tail is only\\n              -- the last two bytes.\\n              RETURN time_part | tail;\\n            END\\n          $$ LANGUAGE plpgsql VOLATILE;\\n\")",
+      "render_path": null,
+      "location": {
+        "type": "method",
+        "class": "Mastodon::TimestampIds",
+        "method": "s(:self).define_timestamp_id"
+      },
+      "user_input": "SecureRandom.hex(16)",
+      "confidence": "Medium",
+      "note": ""
+    },
+    {
+      "warning_type": "Cross-Site Scripting",
+      "warning_code": 4,
+      "fingerprint": "e04aafe1e06cf8317fb6ac0a7f35783e45aa1274272ee6eaf28d39adfdad489b",
+      "check_name": "LinkToHref",
+      "message": "Potentially unsafe model attribute in link_to href",
+      "file": "app/views/admin/accounts/show.html.haml",
+      "line": 125,
+      "link": "http://brakemanscanner.org/docs/warning_types/link_to_href",
+      "code": "link_to(Account.find(params[:id]).outbox_url, Account.find(params[:id]).outbox_url)",
+      "render_path": [{"type":"controller","class":"Admin::AccountsController","method":"show","line":13,"file":"app/controllers/admin/accounts_controller.rb"}],
+      "location": {
+        "type": "template",
+        "template": "admin/accounts/show"
+      },
+      "user_input": "Account.find(params[:id]).outbox_url",
+      "confidence": "Weak",
+      "note": ""
+    },
     {
       "warning_type": "Dynamic Render Path",
       "warning_code": 15,
@@ -84,7 +256,7 @@
       "check_name": "Render",
       "message": "Render path contains parameter value",
       "file": "app/views/stream_entries/show.html.haml",
-      "line": 23,
+      "line": 21,
       "link": "http://brakemanscanner.org/docs/warning_types/dynamic_render_path/",
       "code": "render(partial => \"stream_entries/#{Account.find_local!(params[:account_username]).statuses.find(params[:id]).stream_entry.activity_type.downcase}\", { :locals => ({ Account.find_local!(params[:account_username]).statuses.find(params[:id]).stream_entry.activity_type.downcase.to_sym => Account.find_local!(params[:account_username]).statuses.find(params[:id]).stream_entry.activity, :include_threads => true }) })",
       "render_path": [{"type":"controller","class":"StatusesController","method":"show","line":20,"file":"app/controllers/statuses_controller.rb"}],
@@ -97,6 +269,6 @@
       "note": ""
     }
   ],
-  "updated": "2017-08-30 05:14:04 +0200",
-  "brakeman_version": "3.7.2"
+  "updated": "2017-10-05 20:06:40 +0200",
+  "brakeman_version": "4.0.1"
 }
diff --git a/config/locales/de.yml b/config/locales/de.yml
index ec48bd5ff..7c0edff94 100644
--- a/config/locales/de.yml
+++ b/config/locales/de.yml
@@ -137,7 +137,7 @@ de:
       reject_media: Mediendateien ablehnen
       reject_media_hint: Entfernt lokal gespeicherte Mediendateien und verhindert deren künftiges Herunterladen. Für Sperren irrelevant
       severities:
-        none: Kein
+        noop: Kein
         silence: Stummschaltung
         suspend: Sperren
       severity: Schweregrad
@@ -180,7 +180,7 @@ de:
       nsfw:
         'false': Medienanhänge wieder anzeigen
         'true': Medienanhänge verbergen
-      report: "Meldung #%{id}"
+      report: 'Meldung #%{id}'
       report_contents: Inhalt
       reported_account: Gemeldetes Konto
       reported_by: Gemeldet von
@@ -386,7 +386,7 @@ de:
       body: "%{name} hat dich erwähnt:"
       subject: "%{name} hat dich erwähnt"
     reblog:
-      body: '%{name} hat deinen Beitrag geteilt:'
+      body: "%{name} hat deinen Beitrag geteilt:"
       subject: "%{name} hat deinen Beitrag geteilt"
   number:
     human:
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 5d9557535..2059c5e2b 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -109,10 +109,17 @@ en:
       username: Username
       web: Web
     custom_emojis:
+      copied_msg: Successfully created local copy of the emoji
+      copy: Copy
+      copy_failed_msg: Could not make a local copy of that emoji
       created_msg: Emoji successfully created!
       delete: Delete
       destroyed_msg: Emojo successfully destroyed!
+      disable: Disable
+      disabled_msg: Successfully disabled that emoji
       emoji: Emoji
+      enable: Enable
+      enabled_msg: Successfully enabled that emoji
       image_hint: PNG up to 50KB
       new:
         title: Add new custom emoji
diff --git a/config/routes.rb b/config/routes.rb
index 959afc23f..cc1f66e52 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -139,7 +139,13 @@ Rails.application.routes.draw do
       resource :two_factor_authentication, only: [:destroy]
     end
 
-    resources :custom_emojis, only: [:index, :new, :create, :destroy]
+    resources :custom_emojis, only: [:index, :new, :create, :destroy] do
+      member do
+        post :copy
+        post :enable
+        post :disable
+      end
+    end
   end
 
   get '/admin', to: redirect('/admin/settings/edit', status: 302)
diff --git a/db/migrate/20171005171936_add_disabled_to_custom_emojis.rb b/db/migrate/20171005171936_add_disabled_to_custom_emojis.rb
new file mode 100644
index 000000000..067a7bee0
--- /dev/null
+++ b/db/migrate/20171005171936_add_disabled_to_custom_emojis.rb
@@ -0,0 +1,15 @@
+require Rails.root.join('lib', 'mastodon', 'migration_helpers')
+
+class AddDisabledToCustomEmojis < ActiveRecord::Migration[5.1]
+  include Mastodon::MigrationHelpers
+
+  disable_ddl_transaction!
+
+  def up
+    safety_assured { add_column_with_default :custom_emojis, :disabled, :bool, default: false }
+  end
+
+  def down
+    remove_column :custom_emojis, :disabled
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 337678c67..3358e2997 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20170928082043) do
+ActiveRecord::Schema.define(version: 20171005171936) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -98,6 +98,7 @@ ActiveRecord::Schema.define(version: 20170928082043) do
     t.datetime "image_updated_at"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.boolean "disabled", default: false, null: false
     t.index ["shortcode", "domain"], name: "index_custom_emojis_on_shortcode_and_domain", unique: true
   end