Merge branch '1258-anti-link-spam-exemption' into 'develop'

AntiSpamLinkPolicy: Exempt local users.

Closes #1258

See merge request !2686

lib/pleroma/web/activity_pub/mrf/anti_link_spam_policy.ex

@@ -27,11 +27,14 @@ defp contains_links?(_), do: false
 
   @impl true
   def filter(%{"type" => "Create", "actor" => actor, "object" => object} = message) do
-    with {:ok, %User{} = u} <- User.get_or_fetch_by_ap_id(actor),
+    with {:ok, %User{local: false} = u} <- User.get_or_fetch_by_ap_id(actor),
          {:contains_links, true} <- {:contains_links, contains_links?(object)},
          {:old_user, true} <- {:old_user, old_user?(u)} do
       {:ok, message}
     else
+      {:ok, %User{local: true}} ->
+        {:ok, message}
+
       {:contains_links, false} ->
         {:ok, message}
 

test/web/activity_pub/mrf/anti_link_spam_policy_test.exs

@@ -33,7 +33,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.AntiLinkSpamPolicyTest do
 
   describe "with new user" do
     test "it allows posts without links" do
-      user = insert(:user)
+      user = insert(:user, local: false)
 
       assert user.note_count == 0
 
@@ -45,7 +45,7 @@ test "it allows posts without links" do
     end
 
     test "it disallows posts with links" do
-      user = insert(:user)
+      user = insert(:user, local: false)
 
       assert user.note_count == 0
 
@@ -55,6 +55,18 @@ test "it disallows posts with links" do
 
       {:reject, _} = AntiLinkSpamPolicy.filter(message)
     end
+
+    test "it allows posts with links for local users" do
+      user = insert(:user)
+
+      assert user.note_count == 0
+
+      message =
+        @linkful_message
+        |> Map.put("actor", user.ap_id)
+
+      {:ok, _message} = AntiLinkSpamPolicy.filter(message)
+    end
   end
 
   describe "with old user" do