diff options
Diffstat (limited to 'app/services/fetch_atom_service.rb')
-rw-r--r-- | app/services/fetch_atom_service.rb | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/app/services/fetch_atom_service.rb b/app/services/fetch_atom_service.rb deleted file mode 100644 index d6508a988..000000000 --- a/app/services/fetch_atom_service.rb +++ /dev/null @@ -1,93 +0,0 @@ -# frozen_string_literal: true - -class FetchAtomService < BaseService - include JsonLdHelper - - def call(url) - return if url.blank? - - result = process(url) - - # retry without ActivityPub - result ||= process(url) if @unsupported_activity - - result - rescue OpenSSL::SSL::SSLError => e - Rails.logger.debug "SSL error: #{e}" - nil - rescue HTTP::ConnectionError => e - Rails.logger.debug "HTTP ConnectionError: #{e}" - nil - end - - private - - def process(url, terminal = false) - @url = url - perform_request { |response| process_response(response, terminal) } - end - - def perform_request(&block) - accept = 'text/html' - accept = 'application/activity+json, application/ld+json; profile="https://www.w3.org/ns/activitystreams", application/atom+xml, ' + accept unless @unsupported_activity - - Request.new(:get, @url).add_headers('Accept' => accept).perform(&block) - end - - def process_response(response, terminal = false) - return nil if response.code != 200 - - if response.mime_type == 'application/atom+xml' - [@url, { prefetched_body: response.body_with_limit }, :ostatus] - elsif ['application/activity+json', 'application/ld+json'].include?(response.mime_type) - body = response.body_with_limit - json = body_to_json(body) - if supported_context?(json) && equals_or_includes_any?(json['type'], ActivityPub::FetchRemoteAccountService::SUPPORTED_TYPES) && json['inbox'].present? - [json['id'], { prefetched_body: body, id: true }, :activitypub] - elsif supported_context?(json) && expected_type?(json) - [json['id'], { prefetched_body: body, id: true }, :activitypub] - else - @unsupported_activity = true - nil - end - elsif !terminal - link_header = response['Link'] && parse_link_header(response) - - if link_header&.find_link(%w(rel alternate)) - process_link_headers(link_header) - elsif response.mime_type == 'text/html' - process_html(response) - end - end - end - - def expected_type?(json) - equals_or_includes_any?(json['type'], ActivityPub::Activity::Create::SUPPORTED_TYPES + ActivityPub::Activity::Create::CONVERTED_TYPES) - end - - def process_html(response) - page = Nokogiri::HTML(response.body_with_limit) - - json_link = page.xpath('//link[@rel="alternate"]').find { |link| ['application/activity+json', 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"'].include?(link['type']) } - atom_link = page.xpath('//link[@rel="alternate"]').find { |link| link['type'] == 'application/atom+xml' } - - result ||= process(json_link['href'], terminal: true) unless json_link.nil? || @unsupported_activity - result ||= process(atom_link['href'], terminal: true) unless atom_link.nil? - - result - end - - def process_link_headers(link_header) - json_link = link_header.find_link(%w(rel alternate), %w(type application/activity+json)) || link_header.find_link(%w(rel alternate), ['type', 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"']) - atom_link = link_header.find_link(%w(rel alternate), %w(type application/atom+xml)) - - result ||= process(json_link.href, terminal: true) unless json_link.nil? || @unsupported_activity - result ||= process(atom_link.href, terminal: true) unless atom_link.nil? - - result - end - - def parse_link_header(response) - LinkHeader.parse(response['Link'].is_a?(Array) ? response['Link'].first : response['Link']) - end -end |