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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.Visibility do
alias Pleroma.Activity
alias Pleroma.Object
alias Pleroma.Repo
alias Pleroma.User
alias Pleroma.Web.ActivityPub.Utils
require Pleroma.Constants
@spec is_public?(Object.t() | Activity.t() | map()) :: boolean()
def is_public?(%Object{data: %{"type" => "Tombstone"}}), do: false
def is_public?(%Object{data: data}), do: is_public?(data)
def is_public?(%Activity{data: %{"type" => "Move"}}), do: true
def is_public?(%Activity{data: data}), do: is_public?(data)
def is_public?(%{"directMessage" => true}), do: false
def is_public?(data), do: Utils.label_in_message?(Pleroma.Constants.as_public(), data)
def is_private?(activity) do
with false <- is_public?(activity),
%User{follower_address: follower_address} <-
User.get_cached_by_ap_id(activity.data["actor"]) do
follower_address in activity.data["to"]
else
_ -> false
end
end
def is_announceable?(activity, user, public \\ true) do
is_public?(activity) ||
(!public && is_private?(activity) && activity.data["actor"] == user.ap_id)
end
def is_direct?(%Activity{data: %{"directMessage" => true}}), do: true
def is_direct?(%Object{data: %{"directMessage" => true}}), do: true
def is_direct?(activity) do
!is_public?(activity) && !is_private?(activity)
end
def is_list?(%{data: %{"listMessage" => _}}), do: true
def is_list?(_), do: false
@spec visible_for_user?(Activity.t(), User.t() | nil) :: boolean()
def visible_for_user?(%{actor: ap_id}, %User{ap_id: ap_id}), do: true
def visible_for_user?(nil, _), do: false
def visible_for_user?(%{data: %{"listMessage" => _}}, nil), do: false
def visible_for_user?(%{data: %{"listMessage" => list_ap_id}} = activity, %User{} = user) do
user.ap_id in activity.data["to"] ||
list_ap_id
|> Pleroma.List.get_by_ap_id()
|> Pleroma.List.member?(user)
end
def visible_for_user?(%{local: local} = activity, nil) do
cfg_key = if local, do: :local, else: :remote
if Pleroma.Config.restrict_unauthenticated_access?(:activities, cfg_key),
do: false,
else: is_public?(activity)
end
def visible_for_user?(activity, user) do
x = [user.ap_id | User.following(user)]
y = [activity.actor] ++ activity.data["to"] ++ (activity.data["cc"] || [])
is_public?(activity) || Enum.any?(x, &(&1 in y))
end
def entire_thread_visible_for_user?(%Activity{} = activity, %User{} = user) do
{:ok, %{rows: [[result]]}} =
Ecto.Adapters.SQL.query(Repo, "SELECT thread_visibility($1, $2)", [
user.ap_id,
activity.data["id"]
])
result
end
def get_visibility(object) do
to = object.data["to"] || []
cc = object.data["cc"] || []
cond do
Pleroma.Constants.as_public() in to ->
"public"
Pleroma.Constants.as_public() in cc ->
"unlisted"
# this should use the sql for the object's activity
Enum.any?(to, &String.contains?(&1, "/followers")) ->
"private"
object.data["directMessage"] == true ->
"direct"
is_binary(object.data["listMessage"]) ->
"list"
length(cc) > 0 ->
"private"
true ->
"direct"
end
end
end
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