mastodon/app/controllers/application_controller.rb

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# frozen_string_literal: true
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class ApplicationController < ActionController::Base
# Prevent CSRF attacks by raising an exception.
# For APIs, you may want to use :null_session instead.
protect_from_forgery with: :exception
include Localized
include UserTrackingConcern
include SessionTrackingConcern
include CacheConcern
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include DomainControlHelper
helper_method :current_account
helper_method :current_session
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helper_method :current_flavour
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helper_method :current_skin
helper_method :single_user_mode?
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helper_method :use_seamless_external_login?
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helper_method :whitelist_mode?
rescue_from ActionController::ParameterMissing, Paperclip::AdapterRegistry::NoHandlerError, with: :bad_request
rescue_from Mastodon::NotPermittedError, with: :forbidden
rescue_from ActionController::RoutingError, ActiveRecord::RecordNotFound, with: :not_found
rescue_from ActionController::UnknownFormat, with: :not_acceptable
rescue_from ActionController::InvalidAuthenticityToken, with: :unprocessable_entity
rescue_from Mastodon::RateLimitExceededError, with: :too_many_requests
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rescue_from HTTP::Error, OpenSSL::SSL::SSLError, with: :internal_server_error
rescue_from Mastodon::RaceConditionError, Stoplight::Error::RedLight, ActiveRecord::SerializationFailure, with: :service_unavailable
rescue_from Seahorse::Client::NetworkingError do |e|
Rails.logger.warn "Storage server error: #{e}"
service_unavailable
end
before_action :store_current_location, except: :raise_not_found, unless: :devise_controller?
before_action :require_functional!, if: :user_signed_in?
skip_before_action :verify_authenticity_token, only: :raise_not_found
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def raise_not_found
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raise ActionController::RoutingError, "No route matches #{params[:unmatched_route]}"
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end
private
def authorized_fetch_mode?
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ENV['AUTHORIZED_FETCH'] == 'true' || Rails.configuration.x.whitelist_mode
end
def public_fetch_mode?
!authorized_fetch_mode?
end
def store_current_location
store_location_for(:user, request.url) unless [:json, :rss].include?(request.format&.to_sym)
end
def require_admin!
forbidden unless current_user&.admin?
end
def require_staff!
forbidden unless current_user&.staff?
end
def require_functional!
redirect_to edit_user_registration_path unless current_user.functional?
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end
def after_sign_out_path_for(_resource_or_scope)
new_user_session_path
end
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def pack(data, pack_name, skin = 'default')
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return nil unless pack?(data, pack_name)
pack_data = {
common: pack_name == 'common' ? nil : resolve_pack(data['name'] ? Themes.instance.flavour(current_flavour) : Themes.instance.core, 'common', skin),
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flavour: data['name'],
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pack: pack_name,
preload: nil,
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skin: nil,
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supported_locales: data['locales'],
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}
if data['pack'][pack_name].is_a?(Hash)
pack_data[:common] = nil if data['pack'][pack_name]['use_common'] == false
pack_data[:pack] = nil unless data['pack'][pack_name]['filename']
if data['pack'][pack_name]['preload']
pack_data[:preload] = [data['pack'][pack_name]['preload']] if data['pack'][pack_name]['preload'].is_a?(String)
pack_data[:preload] = data['pack'][pack_name]['preload'] if data['pack'][pack_name]['preload'].is_a?(Array)
end
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if skin != 'default' && data['skin'][skin]
pack_data[:skin] = skin if data['skin'][skin].include?(pack_name)
else # default skin
pack_data[:skin] = 'default' if data['pack'][pack_name]['stylesheet']
end
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end
pack_data
end
def pack?(data, pack_name)
if data['pack'].is_a?(Hash) && data['pack'].key?(pack_name)
return true if data['pack'][pack_name].is_a?(String) || data['pack'][pack_name].is_a?(Hash)
end
false
end
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def nil_pack(data, pack_name, skin = 'default')
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{
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common: pack_name == 'common' ? nil : resolve_pack(data['name'] ? Themes.instance.flavour(current_flavour) : Themes.instance.core, 'common', skin),
flavour: data['name'],
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pack: nil,
preload: nil,
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skin: nil,
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supported_locales: data['locales'],
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}
end
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def resolve_pack(data, pack_name, skin = 'default')
result = pack(data, pack_name, skin)
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unless result
if data['name'] && data.key?('fallback')
if data['fallback'].nil?
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return nil_pack(data, pack_name, skin)
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elsif data['fallback'].is_a?(String) && Themes.instance.flavour(data['fallback'])
return resolve_pack(Themes.instance.flavour(data['fallback']), pack_name)
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elsif data['fallback'].is_a?(Array)
data['fallback'].each do |fallback|
return resolve_pack(Themes.instance.flavour(fallback), pack_name) if Themes.instance.flavour(fallback)
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end
end
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return nil_pack(data, pack_name, skin)
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end
return data.key?('name') && data['name'] != Setting.default_settings['flavour'] ? resolve_pack(Themes.instance.flavour(Setting.default_settings['flavour']), pack_name) : nil_pack(data, pack_name, skin)
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end
result
end
def use_pack(pack_name)
@core = resolve_pack(Themes.instance.core, pack_name)
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@theme = resolve_pack(Themes.instance.flavour(current_flavour), pack_name, current_skin)
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end
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protected
def truthy_param?(key)
ActiveModel::Type::Boolean.new.cast(params[key])
end
def forbidden
respond_with_error(403)
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end
def not_found
respond_with_error(404)
end
def gone
respond_with_error(410)
end
def unprocessable_entity
respond_with_error(422)
end
def not_acceptable
respond_with_error(406)
end
def bad_request
respond_with_error(400)
end
def internal_server_error
respond_with_error(500)
end
def service_unavailable
respond_with_error(503)
end
def too_many_requests
respond_with_error(429)
end
def single_user_mode?
@single_user_mode ||= Rails.configuration.x.single_user_mode && Account.where('id > 0').exists?
end
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def use_seamless_external_login?
Devise.pam_authentication || Devise.ldap_authentication
end
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def current_account
return @current_account if defined?(@current_account)
@current_account = current_user&.account
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end
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def current_session
return @current_session if defined?(@current_session)
@current_session = SessionActivation.find_by(session_id: cookies.signed['_session_id']) if cookies.signed['_session_id'].present?
end
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def current_flavour
return Setting.flavour unless Themes.instance.flavours.include? current_user&.setting_flavour
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current_user.setting_flavour
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end
def current_skin
return Setting.skin unless Themes.instance.skins_for(current_flavour).include? current_user&.setting_skin
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current_user.setting_skin
end
def respond_with_error(code)
respond_to do |format|
format.any do
use_pack 'error'
render "errors/#{code}", layout: 'error', status: code, formats: [:html]
end
format.json { render json: { error: Rack::Utils::HTTP_STATUS_CODES[code] }, status: code }
end
end
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end