2019-02-04 02:35:46 +00:00
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# Pleroma: A lightweight social networking server
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# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
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alias Pleroma.User
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@behaviour Pleroma.Web.ActivityPub.MRF
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2019-05-06 01:43:11 +00:00
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@moduledoc """
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Apply policies based on user tags
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This policy applies policies on a user activities depending on their tags
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on your instance.
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- `mrf_tag:media-force-nsfw`: Mark as sensitive on presence of attachments
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- `mrf_tag:media-strip`: Remove attachments
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- `mrf_tag:force-unlisted`: Mark as unlisted (removes from the federated timeline)
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- `mrf_tag:sandbox`: Remove from public (local and federated) timelines
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- `mrf_tag:disable-remote-subscription`: Reject non-local follow requests
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- `mrf_tag:disable-any-subscription`: Reject any follow requests
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"""
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2019-02-04 02:35:46 +00:00
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2019-07-29 02:43:19 +00:00
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require Pleroma.Constants
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2019-07-10 05:12:21 +00:00
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2019-02-04 02:35:46 +00:00
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defp get_tags(%User{tags: tags}) when is_list(tags), do: tags
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defp get_tags(_), do: []
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defp process_tag(
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"mrf_tag:media-force-nsfw",
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2019-07-10 05:12:21 +00:00
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%{
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"type" => "Create",
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"object" => %{"attachment" => child_attachment} = object
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} = message
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2019-02-04 02:35:46 +00:00
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)
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when length(child_attachment) > 0 do
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tags = (object["tag"] || []) ++ ["nsfw"]
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object =
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object
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2019-05-17 01:02:04 +00:00
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|> Map.put("tag", tags)
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2019-02-04 02:35:46 +00:00
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|> Map.put("sensitive", true)
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message = Map.put(message, "object", object)
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{:ok, message}
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end
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defp process_tag(
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"mrf_tag:media-strip",
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2019-07-10 05:12:21 +00:00
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%{
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"type" => "Create",
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"object" => %{"attachment" => child_attachment} = object
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} = message
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)
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when length(child_attachment) > 0 do
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object = Map.delete(object, "attachment")
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message = Map.put(message, "object", object)
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{:ok, message}
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end
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2019-02-04 15:55:20 +00:00
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defp process_tag(
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"mrf_tag:force-unlisted",
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2019-07-10 05:12:21 +00:00
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%{
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"type" => "Create",
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"to" => to,
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"cc" => cc,
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"actor" => actor,
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"object" => object
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} = message
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) do
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user = User.get_cached_by_ap_id(actor)
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2019-07-29 02:43:19 +00:00
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if Enum.member?(to, Pleroma.Constants.as_public()) do
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to = List.delete(to, Pleroma.Constants.as_public()) ++ [user.follower_address]
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cc = List.delete(cc, user.follower_address) ++ [Pleroma.Constants.as_public()]
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2019-02-04 19:03:25 +00:00
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object =
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object
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|> Map.put("to", to)
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|> Map.put("cc", cc)
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2019-02-04 15:55:20 +00:00
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message =
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message
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|> Map.put("to", to)
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|> Map.put("cc", cc)
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|> Map.put("object", object)
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{:ok, message}
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else
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{:ok, message}
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end
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end
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defp process_tag(
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"mrf_tag:sandbox",
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%{
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"type" => "Create",
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"to" => to,
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"cc" => cc,
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"actor" => actor,
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"object" => object
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} = message
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) do
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user = User.get_cached_by_ap_id(actor)
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2019-07-29 02:43:19 +00:00
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if Enum.member?(to, Pleroma.Constants.as_public()) or
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Enum.member?(cc, Pleroma.Constants.as_public()) do
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to = List.delete(to, Pleroma.Constants.as_public()) ++ [user.follower_address]
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cc = List.delete(cc, Pleroma.Constants.as_public())
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2019-02-04 19:03:25 +00:00
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object =
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object
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|> Map.put("to", to)
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|> Map.put("cc", cc)
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2019-02-04 15:55:20 +00:00
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message =
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message
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|> Map.put("to", to)
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|> Map.put("cc", cc)
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|> Map.put("object", object)
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{:ok, message}
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else
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{:ok, message}
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end
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end
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2019-02-04 17:48:48 +00:00
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defp process_tag(
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"mrf_tag:disable-remote-subscription",
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%{"type" => "Follow", "actor" => actor} = message
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) do
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user = User.get_cached_by_ap_id(actor)
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if user.local == true do
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{:ok, message}
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else
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{:reject, nil}
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end
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end
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2019-07-10 05:12:21 +00:00
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defp process_tag("mrf_tag:disable-any-subscription", %{"type" => "Follow"}),
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do: {:reject, nil}
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2019-02-04 17:48:48 +00:00
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2019-02-04 02:35:46 +00:00
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defp process_tag(_, message), do: {:ok, message}
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2019-02-04 17:06:37 +00:00
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def filter_message(actor, message) do
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User.get_cached_by_ap_id(actor)
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2019-02-04 17:03:34 +00:00
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|> get_tags()
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|> Enum.reduce({:ok, message}, fn
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tag, {:ok, message} ->
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process_tag(tag, message)
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_, error ->
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error
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end)
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end
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@impl true
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def filter(%{"object" => target_actor, "type" => "Follow"} = message),
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do: filter_message(target_actor, message)
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2019-02-04 17:06:37 +00:00
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@impl true
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def filter(%{"actor" => actor, "type" => "Create"} = message),
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do: filter_message(actor, message)
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@impl true
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def filter(message), do: {:ok, message}
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2019-08-13 21:52:54 +00:00
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@impl true
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def describe(), do: {:ok, %{}}
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end
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