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