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mastodon/app/services/activitypub/fetch_remote_status_service.rb

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# 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?
return if 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?
%w(Note Article).include? @json['type']
end
end