mastodon/app/services/fetch_remote_status_service.rb

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# frozen_string_literal: true
class FetchRemoteStatusService < BaseService
include AuthorExtractor
def call(url, prefetched_body = nil, protocol = :ostatus)
if prefetched_body.nil?
resource_url, body, protocol = FetchAtomService.new.call(url)
else
resource_url = url
body = prefetched_body
end
case protocol
when :ostatus
process_atom(resource_url, body)
when :activitypub
ActivityPub::FetchRemoteStatusService.new.call(resource_url, body)
end
end
private
def process_atom(url, body)
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Rails.logger.debug "Processing Atom for remote status at #{url}"
xml = Nokogiri::XML(body)
xml.encoding = 'utf-8'
account = author_from_xml(xml.at_xpath('/xmlns:entry', xmlns: TagManager::XMLNS))
domain = Addressable::URI.parse(url).normalized_host
return nil unless !account.nil? && confirmed_domain?(domain, account)
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statuses = ProcessFeedService.new.call(body, account)
statuses.first
rescue Nokogiri::XML::XPath::SyntaxError
Rails.logger.debug 'Invalid XML or missing namespace'
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nil
end
def confirmed_domain?(domain, account)
account.domain.nil? || domain.casecmp(account.domain).zero? || domain.casecmp(Addressable::URI.parse(account.remote_url).normalized_host).zero?
end
end