From 3ab59a6f3c7b7bae2e69d1a8d1bf484d039a5420 Mon Sep 17 00:00:00 2001
From: eugenijm <eugenijm@protonmail.com>
Date: Tue, 15 Sep 2020 13:00:07 +0300
Subject: [PATCH] Mastodon API: fix the public timeline returning an error when
 the `reply_visibility` parameter is set to `self` for an unauthenticated user

---
 CHANGELOG.md                                 | 1 +
 lib/pleroma/web/activity_pub/activity_pub.ex | 4 ++--
 test/web/activity_pub/activity_pub_test.exs  | 8 ++++++++
 3 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 82f64d441..f7a372e11 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,6 +24,7 @@ switched to a new configuration mechanism, however it was not officially removed
 ### Fixed
 
 - Welcome Chat messages preventing user registration with MRF Simple Policy applied to the local instance
+- Mastodon API: the public timeline returning an error when the `reply_visibility` parameter is set to `self` for an unauthenticated user
 
 ## [2.1.1] - 2020-09-08
 
diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex
index 66a9f78a3..5aac3f53b 100644
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@@ -767,7 +767,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   end
 
   defp restrict_replies(query, %{
-         reply_filtering_user: user,
+         reply_filtering_user: %User{} = user,
          reply_visibility: "self"
        }) do
     from(
@@ -783,7 +783,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   end
 
   defp restrict_replies(query, %{
-         reply_filtering_user: user,
+         reply_filtering_user: %User{} = user,
          reply_visibility: "following"
        }) do
     from(
diff --git a/test/web/activity_pub/activity_pub_test.exs b/test/web/activity_pub/activity_pub_test.exs
index d8caa0b00..7bdad3810 100644
--- a/test/web/activity_pub/activity_pub_test.exs
+++ b/test/web/activity_pub/activity_pub_test.exs
@@ -1810,6 +1810,14 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
         |> Enum.map(& &1.id)
 
       assert activities_ids == []
+
+      activities_ids =
+        %{}
+        |> Map.put(:reply_visibility, "self")
+        |> Map.put(:reply_filtering_user, nil)
+        |> ActivityPub.fetch_public_activities()
+
+      assert activities_ids == []
     end
 
     test "home timeline", %{users: %{u1: user}} do