akkoma/lib/pleroma/web/activity_pub/mrf/reject_non_public.ex

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defmodule Pleroma.Web.ActivityPub.MRF.RejectNonPublic do
alias Pleroma.User
@behaviour Pleroma.Web.ActivityPub.MRF
@mrf_rejectnonpublic Application.get_env(:pleroma, :mrf_rejectnonpublic)
@allow_followersonly Keyword.get(@mrf_rejectnonpublic, :allow_followersonly)
@allow_direct Keyword.get(@mrf_rejectnonpublic, :allow_direct)
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@impl true
def filter(object) do
if object["type"] == "Create" do
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user = User.get_cached_by_ap_id(object["actor"])
public = "https://www.w3.org/ns/activitystreams#Public"
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# Determine visibility
visibility =
cond do
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public in object["to"] -> "public"
public in object["cc"] -> "unlisted"
user.follower_address in object["to"] -> "followers"
true -> "direct"
end
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case visibility do
"public" ->
{:ok, object}
"unlisted" ->
{:ok, object}
"followers" ->
with true <- @allow_followersonly do
{:ok, object}
else
_e -> {:reject, nil}
end
"direct" ->
with true <- @allow_direct do
{:ok, object}
else
_e -> {:reject, nil}
end
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end
else
{:ok, object}
end
end
end