Merge commit from fork

* Add limit on inbox payload size

The 1MB limit is consistent with the limit we use when fetching remote resources

* Add limit to number of options from federated polls

* Add a limit to the number of federated profile fields

* Add limit on federated username length

* Add hard limits for federated display name and account bio

* Add hard limits for `alsoKnownAs` and `attributionDomains`

* Add hard limit on federated custom emoji shortcode

* Highlight most destructive limits and expand on their reasoning
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Claire 2026-01-20 15:14:45 +01:00 committed by GitHub
parent 9a25b12f0c
commit 1a74b74a40
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7 changed files with 51 additions and 8 deletions

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@ -3,6 +3,7 @@
class ActivityPub::InboxesController < ActivityPub::BaseController
include JsonLdHelper
before_action :skip_large_payload
before_action :skip_unknown_actor_activity
before_action :require_actor_signature!
skip_before_action :authenticate_user!
@ -16,6 +17,10 @@ class ActivityPub::InboxesController < ActivityPub::BaseController
private
def skip_large_payload
head 413 if request.content_length > ActivityPub::Activity::MAX_JSON_SIZE
end
def skip_unknown_actor_activity
head 202 if unknown_affected_account?
end