X-Git-Url: https://git.squeep.com/?a=blobdiff_plain;f=lib%2Fpleroma%2Fweb%2Factivity_pub%2Fmrf%2Ftag_policy.ex;h=dd3129707c28b21c441c6910f1c948cfa2ddd834;hb=ce9ed6c730385c2bf322f0241464a683da98ad1a;hp=4d6dc9c9e4fad6f9de4dc7070c10d1f2b606f7b3;hpb=88e32a32ce6a23de12a431c57a6db8251b0e323a;p=akkoma

diff --git a/lib/pleroma/web/activity_pub/mrf/tag_policy.ex b/lib/pleroma/web/activity_pub/mrf/tag_policy.ex
index 4d6dc9c9e..528093ac0 100644
--- a/lib/pleroma/web/activity_pub/mrf/tag_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/tag_policy.ex
@@ -1,34 +1,46 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2021 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}
+         } = message
        )
        when length(child_attachment) > 0 do
-    tags = (object["tag"] || []) ++ ["nsfw"]
-
-    object =
-      object
-      |> Map.put("tags", tags)
-      |> Map.put("sensitive", true)
-
-    message = Map.put(message, "object", object)
-
-    {:ok, message}
+    {:ok, Kernel.put_in(message, ["object", "sensitive"], true)}
   end
 
   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")
@@ -37,10 +49,93 @@ defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
     {:ok, message}
   end
 
+  defp process_tag(
+         "mrf_tag:force-unlisted",
+         %{
+           "type" => "Create",
+           "to" => to,
+           "cc" => cc,
+           "actor" => actor,
+           "object" => object
+         } = message
+       ) do
+    user = User.get_cached_by_ap_id(actor)
+
+    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 =
+        object
+        |> Map.put("to", to)
+        |> Map.put("cc", cc)
+
+      message =
+        message
+        |> Map.put("to", to)
+        |> Map.put("cc", cc)
+        |> Map.put("object", object)
+
+      {:ok, message}
+    else
+      {:ok, message}
+    end
+  end
+
+  defp process_tag(
+         "mrf_tag:sandbox",
+         %{
+           "type" => "Create",
+           "to" => to,
+           "cc" => cc,
+           "actor" => actor,
+           "object" => object
+         } = message
+       ) do
+    user = User.get_cached_by_ap_id(actor)
+
+    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 =
+        object
+        |> Map.put("to", to)
+        |> Map.put("cc", cc)
+
+      message =
+        message
+        |> Map.put("to", to)
+        |> Map.put("cc", cc)
+        |> Map.put("object", object)
+
+      {:ok, message}
+    else
+      {:ok, message}
+    end
+  end
+
+  defp process_tag(
+         "mrf_tag:disable-remote-subscription",
+         %{"type" => "Follow", "actor" => actor} = message
+       ) do
+    user = User.get_cached_by_ap_id(actor)
+
+    if user.local == true do
+      {:ok, message}
+    else
+      {:reject,
+       "[TagPolicy] Follow from #{actor} tagged with mrf_tag:disable-remote-subscription"}
+    end
+  end
+
+  defp process_tag("mrf_tag:disable-any-subscription", %{"type" => "Follow", "actor" => actor}),
+    do: {:reject, "[TagPolicy] Follow from #{actor} tagged with mrf_tag:disable-any-subscription"}
+
   defp process_tag(_, message), do: {:ok, message}
 
-  @impl true
-  def filter(%{"actor" => actor} = message) do
+  def filter_message(actor, message) do
     User.get_cached_by_ap_id(actor)
     |> get_tags()
     |> Enum.reduce({:ok, message}, fn
@@ -51,4 +146,18 @@ defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
         error
     end)
   end
+
+  @impl true
+  def filter(%{"object" => target_actor, "type" => "Follow"} = message),
+    do: filter_message(target_actor, message)
+
+  @impl true
+  def filter(%{"actor" => actor, "type" => "Create"} = message),
+    do: filter_message(actor, message)
+
+  @impl true
+  def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end