Merge branch 'feature/hellthread-mitigation' into 'develop'

implement hellthread mitigation

Closes #474

See merge request pleroma/pleroma!588
This commit is contained in:
kaniini 2018-12-23 11:28:43 +00:00
commit 093d39b634
3 changed files with 23 additions and 0 deletions

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@ -163,6 +163,8 @@
allow_followersonly: false,
allow_direct: false
config :pleroma, :mrf_hellthread, threshold: 10
config :pleroma, :mrf_simple,
media_removal: [],
media_nsfw: [],

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@ -121,6 +121,9 @@ This section is used to configure Pleroma-FE, unless ``:managed_config`` in ``:i
* `allow_followersonly`: whether to allow followers-only posts
* `allow_direct`: whether to allow direct messages
## :mrf_hellthread
* `threshold`: Number of mentioned users after which the message gets discarded as spam
## :media_proxy
* `enabled`: Enables proxying of remote media to the instances proxy
* `base_url`: The base URL to access a user-uploaded file. Useful when you want to proxy the media files via another host/CDN fronts.

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@ -0,0 +1,18 @@
defmodule Pleroma.Web.ActivityPub.MRF.HellthreadPolicy do
@behaviour Pleroma.Web.ActivityPub.MRF
@impl true
def filter(%{"type" => "Create"} = object) do
threshold = Pleroma.Config.get([:mrf_hellthread, :threshold])
recipients = (object["to"] || []) ++ (object["cc"] || [])
if length(recipients) > threshold do
{:reject, nil}
else
{:ok, object}
end
end
@impl true
def filter(object), do: {:ok, object}
end