catstodon/app/services/fetch_remote_status_service.rb
Eugen 17c591ffba Punycode URI normalization (#2370)
* Fix #2119 - Whenever about to send a HTTP request, normalize the URI

* Add test for IDN request in FetchLinkCardService

* Perform IDN normalization on domains before they are stored in the DB
2017-04-25 02:47:31 +02:00

47 lines
1.1 KiB
Ruby

# frozen_string_literal: true
class FetchRemoteStatusService < BaseService
def call(url, prefetched_body = nil)
if prefetched_body.nil?
atom_url, body = FetchAtomService.new.call(url)
else
atom_url = url
body = prefetched_body
end
return nil if atom_url.nil?
process_atom(atom_url, body)
end
private
def process_atom(url, body)
Rails.logger.debug "Processing Atom for remote status at #{url}"
xml = Nokogiri::XML(body)
xml.encoding = 'utf-8'
account = extract_author(url, xml)
return nil if account.nil?
statuses = ProcessFeedService.new.call(body, account)
statuses.first
end
def extract_author(url, xml)
url_parts = Addressable::URI.parse(url).normalize
username = xml.at_xpath('//xmlns:author/xmlns:name').try(:content)
domain = url_parts.host
return nil if username.nil?
Rails.logger.debug "Going to webfinger #{username}@#{domain}"
return FollowRemoteAccountService.new.call("#{username}@#{domain}")
rescue Nokogiri::XML::XPath::SyntaxError
Rails.logger.debug 'Invalid XML or missing namespace'
nil
end
end