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Fix unbounded recursion in post discovery (#23506)

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* Add a limit to how many posts can get fetched as a result of a single request

* Add tests

* Always pass `request_id` when processing `Announce` activities

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Co-authored-by: nametoolong <nametoolong@users.noreply.github.com>
This commit is contained in:
Claire 2023-02-10 22:16:37 +01:00 • committed by GitHub
parent 719bb799be
commit 0c9eac80d8
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12 changed files with 126 additions and 22 deletions
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7
app/lib/activitypub/activity.rb
View file

@ -106,7 +106,8 @@ class ActivityPub::Activity
actor_id = value_or_id(first_of_value(@object['attributedTo']))
if actor_id == @account.uri
return ActivityPub::Activity.factory({ 'type' => 'Create', 'actor' => actor_id, 'object' => @object }, @account).perform
virtual_object = { 'type' => 'Create', 'actor' => actor_id, 'object' => @object }
return ActivityPub::Activity.factory(virtual_object, @account, request_id: @options[:request_id]).perform
end
end
@ -152,9 +153,9 @@ class ActivityPub::Activity
def fetch_remote_original_status
if object_uri.start_with?('http')
return if ActivityPub::TagManager.instance.local_uri?(object_uri)
ActivityPub::FetchRemoteStatusService.new.call(object_uri, id: true, on_behalf_of: @account.followers.local.first)
ActivityPub::FetchRemoteStatusService.new.call(object_uri, id: true, on_behalf_of: @account.followers.local.first, request_id: @options[:request_id])
elsif @object['url'].present?
::FetchRemoteStatusService.new.call(@object['url'])
::FetchRemoteStatusService.new.call(@object['url'], request_id: @options[:request_id])
end
end

6
app/lib/activitypub/activity/create.rb
View file

@ -327,18 +327,18 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
def resolve_thread(status)
return unless status.reply? && status.thread.nil? && Request.valid_url?(in_reply_to_uri)
ThreadResolveWorker.perform_async(status.id, in_reply_to_uri)
ThreadResolveWorker.perform_async(status.id, in_reply_to_uri, { 'request_id' => @options[:request_id]})
end
def fetch_replies(status)
collection = @object['replies']
return if collection.nil?
replies = ActivityPub::FetchRepliesService.new.call(status, collection, false)
replies = ActivityPub::FetchRepliesService.new.call(status, collection, allow_synchronous_requests: false, request_id: @options[:request_id])
return unless replies.nil?
uri = value_or_id(collection)
ActivityPub::FetchRepliesWorker.perform_async(status.id, uri) unless uri.nil?
ActivityPub::FetchRepliesWorker.perform_async(status.id, uri, { 'request_id' => @options[:request_id]}) unless uri.nil?
end
def conversation_from_uri(uri)