mirror of
https://github.com/mastodon/mastodon.git
synced 2024-08-20 21:08:15 -07:00
7467361d70
When an ActivityPub Announce is processed and the boosted toot is not known, fetch it on behalf of one of the booster's followers. This is to allow fetching self-boosts of previously-unknown private toots. If fetching on behalf of a user fails, try fetching it anonymously: the selected follower of a boosting user may be banned by the boosted toot's author.
52 lines
1.5 KiB
Ruby
52 lines
1.5 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, on_behalf_of: nil)
|
|
@json = if prefetched_body.nil?
|
|
fetch_resource(uri, id, on_behalf_of)
|
|
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
|
|
value_or_id(first_of_value(@json['attributedTo']))
|
|
end
|
|
|
|
def trustworthy_attribution?(uri, attributed_to)
|
|
return false if uri.nil? || attributed_to.nil?
|
|
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?
|
|
equals_or_includes_any?(@json['type'], ActivityPub::Activity::Create::SUPPORTED_TYPES + ActivityPub::Activity::Create::CONVERTED_TYPES)
|
|
end
|
|
|
|
def needs_update(actor)
|
|
actor.possibly_stale?
|
|
end
|
|
end
|