hometown/app/services/activitypub/fetch_remote_status_service.rb
Eugen Rochko 4c6b5dbe96
Add semi-support for Video/Image objects in ActivityPub (#5848)
* Add semi-support for Video/Image objects in ActivityPub

Video and Image objects will create corresponding status records
with manually crafted text contents (title + URL)

* Extract html-url-finding logic into JsonLdHelper

* Fallback to id when url missing, extract supported object types
2017-11-30 04:06:20 +01:00

52 lines
1.4 KiB
Ruby

# frozen_string_literal: true
class ActivityPub::FetchRemoteStatusService < BaseService
include JsonLdHelper
# Should be called when uri has already been checked for locality
def call(uri, id: true, prefetched_body: nil)
@json = if prefetched_body.nil?
fetch_resource(uri, id)
else
body_to_json(prefetched_body)
end
return unless supported_context? && expected_type?
return if actor_id.nil? || !trustworthy_attribution?(@json['id'], actor_id)
actor = ActivityPub::TagManager.instance.uri_to_resource(actor_id, Account)
actor = ActivityPub::FetchRemoteAccountService.new.call(actor_id, id: true) if actor.nil? || needs_update(actor)
return if actor.nil? || actor.suspended?
ActivityPub::Activity.factory(activity_json, actor).perform
end
private
def activity_json
{ 'type' => 'Create', 'actor' => actor_id, 'object' => @json }
end
def actor_id
first_of_value(@json['attributedTo'])
end
def trustworthy_attribution?(uri, attributed_to)
Addressable::URI.parse(uri).normalized_host.casecmp(Addressable::URI.parse(attributed_to).normalized_host).zero?
end
def supported_context?
super(@json)
end
def expected_type?
(ActivityPub::Activity::Create::SUPPORTED_TYPES + ActivityPub::Activity::Create::CONVERTED_TYPES).include? @json['type']
end
def needs_update(actor)
actor.possibly_stale?
end
end