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# frozen_string_literal: true
class MediaProxyController < ApplicationController
include RoutingHelper
include Authorization
skip_before_action :store_current_location
skip_before_action :require_functional!
before_action :authenticate_user!, if: :whitelist_mode?
rescue_from ActiveRecord::RecordInvalid, with: :not_found
rescue_from Mastodon::UnexpectedResponseError, with: :not_found
rescue_from Mastodon::NotPermittedError, with: :not_found
rescue_from HTTP::TimeoutError, HTTP::ConnectionError, OpenSSL::SSL::SSLError, with: :internal_server_error
def show
RedisLock.acquire(lock_options) do |lock|
if lock.acquired?
@media_attachment = MediaAttachment.remote.attached.find(params[:id])
authorize @media_attachment.status, :show?
redownload! if @media_attachment.needs_redownload? && !reject_media?
else
raise Mastodon::RaceConditionError
end
end
redirect_to full_asset_url(@media_attachment.file.url(version))
end
private
def redownload!
@media_attachment.download_file!
@media_attachment.created_at = Time.now.utc
@media_attachment.save!
end
def version
if request.path.ends_with?('/small')
:small
else
:original
end
end
def lock_options
{ redis: Redis.current, key: "media_download:#{params[:id]}" }
end
def reject_media?
DomainBlock.reject_media?(@media_attachment.account.domain)
end
end