akkoma/lib/pleroma/web/activity_pub/visibility.ex

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# Pleroma: A lightweight social networking server
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Web.ActivityPub.Visibility do
alias Pleroma.Activity
alias Pleroma.Object
alias Pleroma.Repo
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alias Pleroma.User
def is_public?(%Object{data: %{"type" => "Tombstone"}}), do: false
def is_public?(%Object{data: data}), do: is_public?(data)
def is_public?(%Activity{data: data}), do: is_public?(data)
def is_public?(%{"directMessage" => true}), do: false
def is_public?(data) do
"https://www.w3.org/ns/activitystreams#Public" in (data["to"] ++ (data["cc"] || []))
end
def is_private?(activity) do
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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"]
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else
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_ -> false
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end
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 visible_for_user?(activity, nil) do
is_public?(activity)
end
def visible_for_user?(activity, user) do
x = [user.ap_id | user.following]
y = [activity.actor] ++ activity.data["to"] ++ (activity.data["cc"] || [])
visible_for_user?(activity, nil) || 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"]
])
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result
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end
def get_visibility(object) do
public = "https://www.w3.org/ns/activitystreams#Public"
to = object.data["to"] || []
cc = object.data["cc"] || []
cond do
public in to ->
"public"
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"
length(cc) > 0 ->
"private"
true ->
"direct"
end
end
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end