Merge branch 'stable' into release/2.0.0

[akkoma] / lib / pleroma / web / activity_pub / mrf / tag_policy.ex

diff --git a/lib/pleroma/web/activity_pub/mrf/tag_policy.ex b/lib/pleroma/web/activity_pub/mrf/tag_policy.ex
index b242e44e69b2c2351ba8da946207722189625d35..c310462cba7fbe68baac41855f7bd7f1ad585a49 100644 (file)
--- a/lib/pleroma/web/activity_pub/mrf/tag_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/tag_policy.ex
@@ -1,24 +1,42 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
   alias Pleroma.User
   @behaviour Pleroma.Web.ActivityPub.MRF
+  @moduledoc """
+     Apply policies based on user tags
+
+     This policy applies policies on a user activities depending on their tags
+     on your instance.
+
+     - `mrf_tag:media-force-nsfw`: Mark as sensitive on presence of attachments
+     - `mrf_tag:media-strip`: Remove attachments
+     - `mrf_tag:force-unlisted`: Mark as unlisted (removes from the federated timeline)
+     - `mrf_tag:sandbox`: Remove from public (local and federated) timelines
+     - `mrf_tag:disable-remote-subscription`: Reject non-local follow requests
+     - `mrf_tag:disable-any-subscription`: Reject any follow requests
+  """
+
+  require Pleroma.Constants
 
   defp get_tags(%User{tags: tags}) when is_list(tags), do: tags
   defp get_tags(_), do: []
 
   defp process_tag(
          "mrf_tag:media-force-nsfw",
-         %{"type" => "Create", "object" => %{"attachment" => child_attachment} = object} = message
+         %{
+           "type" => "Create",
+           "object" => %{"attachment" => child_attachment} = object
+         } = message
        )
        when length(child_attachment) > 0 do
     tags = (object["tag"] || []) ++ ["nsfw"]
 
     object =
       object
-      |> Map.put("tags", tags)
+      |> Map.put("tag", tags)
       |> Map.put("sensitive", true)
 
     message = Map.put(message, "object", object)
@@ -28,7 +46,10 @@ defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
 
   defp process_tag(
          "mrf_tag:media-strip",
-         %{"type" => "Create", "object" => %{"attachment" => child_attachment} = object} = message
+         %{
+           "type" => "Create",
+           "object" => %{"attachment" => child_attachment} = object
+         } = message
        )
        when length(child_attachment) > 0 do
     object = Map.delete(object, "attachment")
@@ -39,19 +60,22 @@ defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
 
   defp process_tag(
          "mrf_tag:force-unlisted",
-         %{"type" => "Create", "to" => to, "cc" => cc, "actor" => actor} = message
+         %{
+           "type" => "Create",
+           "to" => to,
+           "cc" => cc,
+           "actor" => actor,
+           "object" => object
+         } = message
        ) do
     user = User.get_cached_by_ap_id(actor)
 
-    if Enum.member?(to, "https://www.w3.org/ns/activitystreams#Public") do
-      to =
-        List.delete(to, "https://www.w3.org/ns/activitystreams#Public") ++ [user.follower_address]
-
-      cc =
-        List.delete(cc, user.follower_address) ++ ["https://www.w3.org/ns/activitystreams#Public"]
+    if Enum.member?(to, Pleroma.Constants.as_public()) do
+      to = List.delete(to, Pleroma.Constants.as_public()) ++ [user.follower_address]
+      cc = List.delete(cc, user.follower_address) ++ [Pleroma.Constants.as_public()]
 
       object =
-        message["object"]
+        object
         |> Map.put("to", to)
         |> Map.put("cc", cc)
 
@@ -69,19 +93,23 @@ defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
 
   defp process_tag(
          "mrf_tag:sandbox",
-         %{"type" => "Create", "to" => to, "cc" => cc, "actor" => actor} = message
+         %{
+           "type" => "Create",
+           "to" => to,
+           "cc" => cc,
+           "actor" => actor,
+           "object" => object
+         } = message
        ) do
     user = User.get_cached_by_ap_id(actor)
 
-    if Enum.member?(to, "https://www.w3.org/ns/activitystreams#Public") or
-         Enum.member?(cc, "https://www.w3.org/ns/activitystreams#Public") do
-      to =
-        List.delete(to, "https://www.w3.org/ns/activitystreams#Public") ++ [user.follower_address]
-
-      cc = List.delete(cc, "https://www.w3.org/ns/activitystreams#Public")
+    if Enum.member?(to, Pleroma.Constants.as_public()) or
+         Enum.member?(cc, Pleroma.Constants.as_public()) do
+      to = List.delete(to, Pleroma.Constants.as_public()) ++ [user.follower_address]
+      cc = List.delete(cc, Pleroma.Constants.as_public())
 
       object =
-        message["object"]
+        object
         |> Map.put("to", to)
         |> Map.put("cc", cc)
 
@@ -110,7 +138,8 @@ defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
     end
   end
 
-  defp process_tag("mrf_tag:disable-any-subscription", %{"type" => "Follow"}), do: {:reject, nil}
+  defp process_tag("mrf_tag:disable-any-subscription", %{"type" => "Follow"}),
+    do: {:reject, nil}
 
   defp process_tag(_, message), do: {:ok, message}
 
@@ -136,4 +165,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
 
   @impl true
   def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end