X-Git-Url: https://git.squeep.com/?a=blobdiff_plain;f=lib%2Fpleroma%2Fweb%2Factivity_pub%2Fmrf%2Ftag_policy.ex;h=c310462cba7fbe68baac41855f7bd7f1ad585a49;hb=ce517ff4e5a9cc144853ec8112bfac2a38a3a68a;hp=2af36616fbde389211a1274634066b3c4b57d7d4;hpb=9a69f08e86ce79a36dfe3d1a6f4c20b0a8a0f3c6;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 2af36616f..65a358c59 100644
--- a/lib/pleroma/web/activity_pub/mrf/tag_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/tag_policy.ex
@@ -1,36 +1,48 @@
 # 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
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy
+  @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" => type,
+           "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}
+       when length(child_attachment) > 0 and type in ["Create", "Update"] do
+    {: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" => type,
+           "object" => %{"attachment" => child_attachment} = object
+         } = message
        )
-       when length(child_attachment) > 0 do
+       when length(child_attachment) > 0 and type in ["Create", "Update"] do
     object = Map.delete(object, "attachment")
     message = Map.put(message, "object", object)
 
@@ -39,21 +51,30 @@ defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
 
   defp process_tag(
          "mrf_tag:force-unlisted",
-         %{"type" => "Create", "to" => to, "cc" => cc, "actor" => actor} = message
-       ) do
+         %{
+           "type" => type,
+           "to" => to,
+           "cc" => cc,
+           "actor" => actor,
+           "object" => object
+         } = message
+       ) when type in ["Create", "Update"] 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]
+    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()]
 
-      cc =
-        List.delete(cc, user.follower_address) ++ ["https://www.w3.org/ns/activitystreams#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
@@ -63,21 +84,31 @@ defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
 
   defp process_tag(
          "mrf_tag:sandbox",
-         %{"type" => "Create", "to" => to, "cc" => cc, "actor" => actor} = message
-       ) do
+         %{
+           "type" => type,
+           "to" => to,
+           "cc" => cc,
+           "actor" => actor,
+           "object" => object
+         } = message
+       ) when type in ["Create", "Update"] 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]
+    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())
 
-      cc = List.delete(cc, "https://www.w3.org/ns/activitystreams#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
@@ -85,11 +116,27 @@ defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
     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(%{"object" => target_actor, "type" => "Follow"} = message) do
-    User.get_cached_by_ap_id(target_actor)
+  def filter_message(actor, message) do
+    User.get_cached_by_ap_id(actor)
     |> get_tags()
     |> Enum.reduce({:ok, message}, fn
       tag, {:ok, message} ->
@@ -101,18 +148,16 @@ defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
   end
 
   @impl true
-  def filter(%{"actor" => actor, "type" => "Create"} = message) do
-    User.get_cached_by_ap_id(actor)
-    |> get_tags()
-    |> Enum.reduce({:ok, message}, fn
-      tag, {:ok, message} ->
-        process_tag(tag, message)
+  def filter(%{"object" => target_actor, "type" => "Follow"} = message),
+    do: filter_message(target_actor, message)
 
-      _, error ->
-        error
-    end)
-  end
+  @impl true
+  def filter(%{"actor" => actor, "type" => type} = message) when type in ["Create", "Update"],
+    do: filter_message(actor, message)
 
   @impl true
   def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end