mastodon/app/controllers/media_proxy_controller.rb

84 lines
2.3 KiB
Ruby

# frozen_string_literal: true
class MediaProxyController < ApplicationController
include RoutingHelper
include Authorization
include Redisable
include Lockable
skip_before_action :require_functional!
before_action :authenticate_user!, if: :limited_federation_mode?
before_action :set_media_attachment
rescue_from ActiveRecord::RecordInvalid, with: :not_found
rescue_from Mastodon::UnexpectedResponseError, with: :not_found
rescue_from Mastodon::NotPermittedError, with: :not_found
rescue_from(*Mastodon::HTTP_CONNECTION_ERRORS, with: :internal_server_error)
def show
if @media_attachment.needs_redownload? && !reject_media?
with_redis_lock("media_download:#{params[:id]}") do
@media_attachment.reload # Reload once we have acquired a lock, in case the file was downloaded in the meantime
redownload! if @media_attachment.needs_redownload?
end
end
if requires_file_streaming?
send_file(media_attachment_file.path, type: media_attachment_file.instance_read(:content_type), disposition: 'inline')
else
redirect_to media_attachment_file_path, allow_other_host: true
end
end
private
def set_media_attachment
@media_attachment = MediaAttachment.attached.find(params[:id])
authorize @media_attachment, :download?
end
def redownload!
@media_attachment.download_file!
@media_attachment.download_thumbnail!
@media_attachment.created_at = Time.now.utc
@media_attachment.save!
end
def attachment_style
if @media_attachment.thumbnail.blank? && preview_requested?
:small
else
:original
end
end
def reject_media?
@media_attachment.account.remote? && DomainBlock.reject_media?(@media_attachment.account.domain)
end
def media_attachment_file_path
if @media_attachment.discarded?
expiring_asset_url(media_attachment_file, 10.minutes)
else
full_asset_url(media_attachment_file.url(attachment_style))
end
end
def media_attachment_file
if @media_attachment.thumbnail.present? && preview_requested?
@media_attachment.thumbnail
else
@media_attachment.file
end
end
def preview_requested?
request.path.end_with?('/small')
end
def requires_file_streaming?
Paperclip::Attachment.default_options[:storage] == :filesystem && @media_attachment.discarded?
end
end